[SCSI] Initial Commit of qla4xxx
David Somayajulu [Tue, 19 Sep 2006 17:28:00 +0000 (10:28 -0700)]
open-iSCSI driver for Qlogic Corporation's iSCSI HBAs

Signed-off-by: Ravi Anand <ravi.anand@qlogic.com>
Signed-off-by: David Somayajulu <david.somayajulu@qlogic.com>
Signed-off-by: Doug Maxey <dwm@bubba.enoyolf.org>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

18 files changed:
drivers/scsi/Kconfig
drivers/scsi/Makefile
drivers/scsi/qla4xxx/Kconfig [new file with mode: 0644]
drivers/scsi/qla4xxx/Makefile [new file with mode: 0644]
drivers/scsi/qla4xxx/ql4_dbg.c [new file with mode: 0644]
drivers/scsi/qla4xxx/ql4_dbg.h [new file with mode: 0644]
drivers/scsi/qla4xxx/ql4_def.h [new file with mode: 0644]
drivers/scsi/qla4xxx/ql4_fw.h [new file with mode: 0644]
drivers/scsi/qla4xxx/ql4_glbl.h [new file with mode: 0644]
drivers/scsi/qla4xxx/ql4_init.c [new file with mode: 0644]
drivers/scsi/qla4xxx/ql4_inline.h [new file with mode: 0644]
drivers/scsi/qla4xxx/ql4_iocb.c [new file with mode: 0644]
drivers/scsi/qla4xxx/ql4_isr.c [new file with mode: 0644]
drivers/scsi/qla4xxx/ql4_mbx.c [new file with mode: 0644]
drivers/scsi/qla4xxx/ql4_nvram.c [new file with mode: 0644]
drivers/scsi/qla4xxx/ql4_nvram.h [new file with mode: 0644]
drivers/scsi/qla4xxx/ql4_os.c [new file with mode: 0644]
drivers/scsi/qla4xxx/ql4_version.h [new file with mode: 0644]

index 8a22a71..3ff5ec8 100644 (file)
@@ -1244,6 +1244,7 @@ config SCSI_QLOGICPTI
          module will be called qlogicpti.
 
 source "drivers/scsi/qla2xxx/Kconfig"
+source "drivers/scsi/qla4xxx/Kconfig"
 
 config SCSI_LPFC
        tristate "Emulex LightPulse Fibre Channel Support"
index 1ef951b..bcca39c 100644 (file)
@@ -84,6 +84,7 @@ obj-$(CONFIG_SCSI_QLOGIC_FAS) += qlogicfas408.o       qlogicfas.o
 obj-$(CONFIG_PCMCIA_QLOGIC)    += qlogicfas408.o
 obj-$(CONFIG_SCSI_QLOGIC_1280) += qla1280.o 
 obj-$(CONFIG_SCSI_QLA_FC)      += qla2xxx/
+obj-$(CONFIG_SCSI_QLA_ISCSI)   += qla4xxx/
 obj-$(CONFIG_SCSI_LPFC)                += lpfc/
 obj-$(CONFIG_SCSI_PAS16)       += pas16.o
 obj-$(CONFIG_SCSI_SEAGATE)     += seagate.o
diff --git a/drivers/scsi/qla4xxx/Kconfig b/drivers/scsi/qla4xxx/Kconfig
new file mode 100644 (file)
index 0000000..08a07f0
--- /dev/null
@@ -0,0 +1,7 @@
+config SCSI_QLA_ISCSI
+       tristate "QLogic ISP4XXX host adapter family support"
+       depends on PCI && SCSI
+       select SCSI_ISCSI_ATTRS
+       ---help---
+       This driver supports the QLogic 40xx (ISP4XXX) iSCSI host
+       adapter family.
diff --git a/drivers/scsi/qla4xxx/Makefile b/drivers/scsi/qla4xxx/Makefile
new file mode 100644 (file)
index 0000000..86ea37b
--- /dev/null
@@ -0,0 +1,5 @@
+qla4xxx-y := ql4_os.o ql4_init.o ql4_mbx.o ql4_iocb.o ql4_isr.o \
+               ql4_nvram.o ql4_dbg.o
+
+obj-$(CONFIG_SCSI_QLA_ISCSI) += qla4xxx.o
+
diff --git a/drivers/scsi/qla4xxx/ql4_dbg.c b/drivers/scsi/qla4xxx/ql4_dbg.c
new file mode 100644 (file)
index 0000000..752031f
--- /dev/null
@@ -0,0 +1,197 @@
+/*
+ * QLogic iSCSI HBA Driver
+ * Copyright (c)  2003-2006 QLogic Corporation
+ *
+ * See LICENSE.qla4xxx for copyright and licensing details.
+ */
+
+#include "ql4_def.h"
+#include <scsi/scsi_dbg.h>
+
+static void qla4xxx_print_srb_info(struct srb * srb)
+{
+       printk("%s: srb = 0x%p, flags=0x%02x\n", __func__, srb, srb->flags);
+       printk("%s: cmd = 0x%p, saved_dma_handle = 0x%lx\n",
+              __func__, srb->cmd, (unsigned long) srb->dma_handle);
+       printk("%s: fw_ddb_index = %d, lun = %d\n",
+              __func__, srb->fw_ddb_index, srb->cmd->device->lun);
+       printk("%s: iocb_tov = %d\n",
+              __func__, srb->iocb_tov);
+       printk("%s: cc_stat = 0x%x, r_start = 0x%lx, u_start = 0x%lx\n\n",
+              __func__, srb->cc_stat, srb->r_start, srb->u_start);
+}
+
+void qla4xxx_print_scsi_cmd(struct scsi_cmnd *cmd)
+{
+       printk("SCSI Command = 0x%p, Handle=0x%p\n", cmd, cmd->host_scribble);
+       printk("  b=%d, t=%02xh, l=%02xh, cmd_len = %02xh\n",
+              cmd->device->channel, cmd->device->id, cmd->device->lun,
+              cmd->cmd_len);
+       scsi_print_command(cmd);
+       printk("  seg_cnt = %d\n", cmd->use_sg);
+       printk("  request buffer = 0x%p, request buffer len = 0x%x\n",
+              cmd->request_buffer, cmd->request_bufflen);
+       if (cmd->use_sg) {
+               struct scatterlist *sg;
+               sg = (struct scatterlist *)cmd->request_buffer;
+               printk("  SG buffer: \n");
+               qla4xxx_dump_buffer((caddr_t) sg,
+                                   (cmd->use_sg * sizeof(*sg)));
+       }
+       printk("  tag = %d, transfersize = 0x%x \n", cmd->tag,
+              cmd->transfersize);
+       printk("  Pid = %d, SP = 0x%p\n", (int)cmd->pid, cmd->SCp.ptr);
+       printk("  underflow size = 0x%x, direction=0x%x\n", cmd->underflow,
+              cmd->sc_data_direction);
+       printk("  Current time (jiffies) = 0x%lx, "
+              "timeout expires = 0x%lx\n", jiffies, cmd->eh_timeout.expires);
+       qla4xxx_print_srb_info((struct srb *) cmd->SCp.ptr);
+}
+
+void __dump_registers(struct scsi_qla_host *ha)
+{
+       uint8_t i;
+       for (i = 0; i < MBOX_REG_COUNT; i++) {
+               printk(KERN_INFO "0x%02X mailbox[%d]      = 0x%08X\n",
+                      (uint8_t) offsetof(struct isp_reg, mailbox[i]), i,
+                      readw(&ha->reg->mailbox[i]));
+       }
+       printk(KERN_INFO "0x%02X flash_address   = 0x%08X\n",
+              (uint8_t) offsetof(struct isp_reg, flash_address),
+              readw(&ha->reg->flash_address));
+       printk(KERN_INFO "0x%02X flash_data      = 0x%08X\n",
+              (uint8_t) offsetof(struct isp_reg, flash_data),
+              readw(&ha->reg->flash_data));
+       printk(KERN_INFO "0x%02X ctrl_status     = 0x%08X\n",
+              (uint8_t) offsetof(struct isp_reg, ctrl_status),
+              readw(&ha->reg->ctrl_status));
+       if (is_qla4010(ha)) {
+               printk(KERN_INFO "0x%02X nvram           = 0x%08X\n",
+                      (uint8_t) offsetof(struct isp_reg, u1.isp4010.nvram),
+                      readw(&ha->reg->u1.isp4010.nvram));
+       }
+
+       else if (is_qla4022(ha)) {
+               printk(KERN_INFO "0x%02X intr_mask       = 0x%08X\n",
+                      (uint8_t) offsetof(struct isp_reg,
+                                         u1.isp4022.intr_mask),
+                      readw(&ha->reg->u1.isp4022.intr_mask));
+               printk(KERN_INFO "0x%02X nvram           = 0x%08X\n",
+                      (uint8_t) offsetof(struct isp_reg, u1.isp4022.nvram),
+                      readw(&ha->reg->u1.isp4022.nvram));
+               printk(KERN_INFO "0x%02X semaphore       = 0x%08X\n",
+                      (uint8_t) offsetof(struct isp_reg,
+                                         u1.isp4022.semaphore),
+                      readw(&ha->reg->u1.isp4022.semaphore));
+       }
+       printk(KERN_INFO "0x%02X req_q_in        = 0x%08X\n",
+              (uint8_t) offsetof(struct isp_reg, req_q_in),
+              readw(&ha->reg->req_q_in));
+       printk(KERN_INFO "0x%02X rsp_q_out       = 0x%08X\n",
+              (uint8_t) offsetof(struct isp_reg, rsp_q_out),
+              readw(&ha->reg->rsp_q_out));
+       if (is_qla4010(ha)) {
+               printk(KERN_INFO "0x%02X ext_hw_conf     = 0x%08X\n",
+                      (uint8_t) offsetof(struct isp_reg,
+                                         u2.isp4010.ext_hw_conf),
+                      readw(&ha->reg->u2.isp4010.ext_hw_conf));
+               printk(KERN_INFO "0x%02X port_ctrl       = 0x%08X\n",
+                      (uint8_t) offsetof(struct isp_reg,
+                                         u2.isp4010.port_ctrl),
+                      readw(&ha->reg->u2.isp4010.port_ctrl));
+               printk(KERN_INFO "0x%02X port_status     = 0x%08X\n",
+                      (uint8_t) offsetof(struct isp_reg,
+                                         u2.isp4010.port_status),
+                      readw(&ha->reg->u2.isp4010.port_status));
+               printk(KERN_INFO "0x%02X req_q_out       = 0x%08X\n",
+                      (uint8_t) offsetof(struct isp_reg,
+                                         u2.isp4010.req_q_out),
+                      readw(&ha->reg->u2.isp4010.req_q_out));
+               printk(KERN_INFO "0x%02X gp_out          = 0x%08X\n",
+                      (uint8_t) offsetof(struct isp_reg, u2.isp4010.gp_out),
+                      readw(&ha->reg->u2.isp4010.gp_out));
+               printk(KERN_INFO "0x%02X gp_in           = 0x%08X\n",
+                      (uint8_t) offsetof(struct isp_reg, u2.isp4010.gp_in),
+                      readw(&ha->reg->u2.isp4010.gp_in));
+               printk(KERN_INFO "0x%02X port_err_status = 0x%08X\n",
+                      (uint8_t) offsetof(struct isp_reg,
+                                         u2.isp4010.port_err_status),
+                      readw(&ha->reg->u2.isp4010.port_err_status));
+       }
+
+       else if (is_qla4022(ha)) {
+               printk(KERN_INFO "Page 0 Registers:\n");
+               printk(KERN_INFO "0x%02X ext_hw_conf     = 0x%08X\n",
+                      (uint8_t) offsetof(struct isp_reg,
+                                         u2.isp4022.p0.ext_hw_conf),
+                      readw(&ha->reg->u2.isp4022.p0.ext_hw_conf));
+               printk(KERN_INFO "0x%02X port_ctrl       = 0x%08X\n",
+                      (uint8_t) offsetof(struct isp_reg,
+                                         u2.isp4022.p0.port_ctrl),
+                      readw(&ha->reg->u2.isp4022.p0.port_ctrl));
+               printk(KERN_INFO "0x%02X port_status     = 0x%08X\n",
+                      (uint8_t) offsetof(struct isp_reg,
+                                         u2.isp4022.p0.port_status),
+                      readw(&ha->reg->u2.isp4022.p0.port_status));
+               printk(KERN_INFO "0x%02X gp_out          = 0x%08X\n",
+                      (uint8_t) offsetof(struct isp_reg,
+                                         u2.isp4022.p0.gp_out),
+                      readw(&ha->reg->u2.isp4022.p0.gp_out));
+               printk(KERN_INFO "0x%02X gp_in           = 0x%08X\n",
+                      (uint8_t) offsetof(struct isp_reg, u2.isp4022.p0.gp_in),
+                      readw(&ha->reg->u2.isp4022.p0.gp_in));
+               printk(KERN_INFO "0x%02X port_err_status = 0x%08X\n",
+                      (uint8_t) offsetof(struct isp_reg,
+                                         u2.isp4022.p0.port_err_status),
+                      readw(&ha->reg->u2.isp4022.p0.port_err_status));
+               printk(KERN_INFO "Page 1 Registers:\n");
+               writel(HOST_MEM_CFG_PAGE & set_rmask(CSR_SCSI_PAGE_SELECT),
+                      &ha->reg->ctrl_status);
+               printk(KERN_INFO "0x%02X req_q_out       = 0x%08X\n",
+                      (uint8_t) offsetof(struct isp_reg,
+                                         u2.isp4022.p1.req_q_out),
+                      readw(&ha->reg->u2.isp4022.p1.req_q_out));
+               writel(PORT_CTRL_STAT_PAGE & set_rmask(CSR_SCSI_PAGE_SELECT),
+                      &ha->reg->ctrl_status);
+       }
+}
+
+void qla4xxx_dump_mbox_registers(struct scsi_qla_host *ha)
+{
+       unsigned long flags = 0;
+       int i = 0;
+       spin_lock_irqsave(&ha->hardware_lock, flags);
+       for (i = 1; i < MBOX_REG_COUNT; i++)
+               printk(KERN_INFO "  Mailbox[%d] = %08x\n", i,
+                      readw(&ha->reg->mailbox[i]));
+       spin_unlock_irqrestore(&ha->hardware_lock, flags);
+}
+
+void qla4xxx_dump_registers(struct scsi_qla_host *ha)
+{
+       unsigned long flags = 0;
+       spin_lock_irqsave(&ha->hardware_lock, flags);
+       __dump_registers(ha);
+       spin_unlock_irqrestore(&ha->hardware_lock, flags);
+}
+
+void qla4xxx_dump_buffer(void *b, uint32_t size)
+{
+       uint32_t cnt;
+       uint8_t *c = b;
+
+       printk(" 0   1   2   3   4   5   6   7   8   9  Ah  Bh  Ch  Dh  Eh  "
+              "Fh\n");
+       printk("------------------------------------------------------------"
+              "--\n");
+       for (cnt = 0; cnt < size; cnt++, c++) {
+               printk(KERN_DEBUG "%02x", *c);
+               if (!(cnt % 16))
+                       printk(KERN_DEBUG "\n");
+
+               else
+                       printk(KERN_DEBUG "  ");
+       }
+       if (cnt % 16)
+               printk(KERN_DEBUG "\n");
+}
diff --git a/drivers/scsi/qla4xxx/ql4_dbg.h b/drivers/scsi/qla4xxx/ql4_dbg.h
new file mode 100644 (file)
index 0000000..56ddc22
--- /dev/null
@@ -0,0 +1,55 @@
+/*
+ * QLogic iSCSI HBA Driver
+ * Copyright (c)  2003-2006 QLogic Corporation
+ *
+ * See LICENSE.qla4xxx for copyright and licensing details.
+ */
+
+/*
+ * Driver debug definitions.
+ */
+/* #define QL_DEBUG  */                        /* DEBUG messages */
+/* #define QL_DEBUG_LEVEL_3  */                /* Output function tracing */
+/* #define QL_DEBUG_LEVEL_4  */
+/* #define QL_DEBUG_LEVEL_5  */
+/* #define QL_DEBUG_LEVEL_9  */
+
+#define QL_DEBUG_LEVEL_2       /* ALways enable error messagess */
+#if defined(QL_DEBUG)
+#define DEBUG(x)   do {x;} while (0);
+#else
+#define DEBUG(x)       do {} while (0);
+#endif
+
+#if defined(QL_DEBUG_LEVEL_2)
+#define DEBUG2(x)      do {if(extended_error_logging == 2) x;} while (0);
+#define DEBUG2_3(x)   do {x;} while (0);
+#else                          /*  */
+#define DEBUG2(x)      do {} while (0);
+#endif                         /*  */
+
+#if defined(QL_DEBUG_LEVEL_3)
+#define DEBUG3(x)      do {if(extended_error_logging == 3) x;} while (0);
+#else                          /*  */
+#define DEBUG3(x)      do {} while (0);
+#if !defined(QL_DEBUG_LEVEL_2)
+#define DEBUG2_3(x)    do {} while (0);
+#endif                         /*  */
+#endif                         /*  */
+#if defined(QL_DEBUG_LEVEL_4)
+#define DEBUG4(x)      do {x;} while (0);
+#else                          /*  */
+#define DEBUG4(x)      do {} while (0);
+#endif                         /*  */
+
+#if defined(QL_DEBUG_LEVEL_5)
+#define DEBUG5(x)      do {x;} while (0);
+#else                          /*  */
+#define DEBUG5(x)      do {} while (0);
+#endif                         /*  */
+
+#if defined(QL_DEBUG_LEVEL_9)
+#define DEBUG9(x)      do {x;} while (0);
+#else                          /*  */
+#define DEBUG9(x)      do {} while (0);
+#endif                         /*  */
diff --git a/drivers/scsi/qla4xxx/ql4_def.h b/drivers/scsi/qla4xxx/ql4_def.h
new file mode 100644 (file)
index 0000000..a7f6c7b
--- /dev/null
@@ -0,0 +1,586 @@
+/*
+ * QLogic iSCSI HBA Driver
+ * Copyright (c)  2003-2006 QLogic Corporation
+ *
+ * See LICENSE.qla4xxx for copyright and licensing details.
+ */
+
+#ifndef __QL4_DEF_H
+#define __QL4_DEF_H
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/list.h>
+#include <linux/pci.h>
+#include <linux/dma-mapping.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/dmapool.h>
+#include <linux/mempool.h>
+#include <linux/spinlock.h>
+#include <linux/workqueue.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/mutex.h>
+
+#include <net/tcp.h>
+#include <scsi/scsi.h>
+#include <scsi/scsi_host.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_transport.h>
+#include <scsi/scsi_transport_iscsi.h>
+
+
+#ifndef PCI_DEVICE_ID_QLOGIC_ISP4010
+#define PCI_DEVICE_ID_QLOGIC_ISP4010   0x4010
+#endif
+
+#ifndef PCI_DEVICE_ID_QLOGIC_ISP4022
+#define PCI_DEVICE_ID_QLOGIC_ISP4022   0x4022
+#endif                         /*  */
+
+#define QLA_SUCCESS                    0
+#define QLA_ERROR                      1
+
+/*
+ * Data bit definitions
+ */
+#define BIT_0  0x1
+#define BIT_1  0x2
+#define BIT_2  0x4
+#define BIT_3  0x8
+#define BIT_4  0x10
+#define BIT_5  0x20
+#define BIT_6  0x40
+#define BIT_7  0x80
+#define BIT_8  0x100
+#define BIT_9  0x200
+#define BIT_10 0x400
+#define BIT_11 0x800
+#define BIT_12 0x1000
+#define BIT_13 0x2000
+#define BIT_14 0x4000
+#define BIT_15 0x8000
+#define BIT_16 0x10000
+#define BIT_17 0x20000
+#define BIT_18 0x40000
+#define BIT_19 0x80000
+#define BIT_20 0x100000
+#define BIT_21 0x200000
+#define BIT_22 0x400000
+#define BIT_23 0x800000
+#define BIT_24 0x1000000
+#define BIT_25 0x2000000
+#define BIT_26 0x4000000
+#define BIT_27 0x8000000
+#define BIT_28 0x10000000
+#define BIT_29 0x20000000
+#define BIT_30 0x40000000
+#define BIT_31 0x80000000
+
+/*
+ * Host adapter default definitions
+ ***********************************/
+#define MAX_HBAS               16
+#define MAX_BUSES              1
+#define MAX_TARGETS            (MAX_PRST_DEV_DB_ENTRIES +  MAX_DEV_DB_ENTRIES)
+#define MAX_LUNS               0xffff
+#define MAX_AEN_ENTRIES                256 /* should be > EXT_DEF_MAX_AEN_QUEUE */
+#define MAX_DDB_ENTRIES                (MAX_PRST_DEV_DB_ENTRIES + MAX_DEV_DB_ENTRIES)
+#define MAX_PDU_ENTRIES                32
+#define INVALID_ENTRY          0xFFFF
+#define MAX_CMDS_TO_RISC       1024
+#define MAX_SRBS               MAX_CMDS_TO_RISC
+#define MBOX_AEN_REG_COUNT     5
+#define MAX_INIT_RETRIES       5
+#define IOCB_HIWAT_CUSHION     16
+
+/*
+ * Buffer sizes
+ */
+#define REQUEST_QUEUE_DEPTH            MAX_CMDS_TO_RISC
+#define RESPONSE_QUEUE_DEPTH           64
+#define QUEUE_SIZE                     64
+#define DMA_BUFFER_SIZE                        512
+
+/*
+ * Misc
+ */
+#define MAC_ADDR_LEN                   6       /* in bytes */
+#define IP_ADDR_LEN                    4       /* in bytes */
+#define DRIVER_NAME                    "qla4xxx"
+
+#define MAX_LINKED_CMDS_PER_LUN                3
+#define MAX_REQS_SERVICED_PER_INTR     16
+
+#define ISCSI_IPADDR_SIZE              4       /* IP address size */
+#define ISCSI_ALIAS_SIZE               32      /* ISCSI Alais name size */
+#define ISCSI_NAME_SIZE                        255     /* ISCSI Name size -
+                                                * usually a string */
+
+#define LSDW(x) ((u32)((u64)(x)))
+#define MSDW(x) ((u32)((((u64)(x)) >> 16) >> 16))
+
+/*
+ * Retry & Timeout Values
+ */
+#define MBOX_TOV                       60
+#define SOFT_RESET_TOV                 30
+#define RESET_INTR_TOV                 3
+#define SEMAPHORE_TOV                  10
+#define ADAPTER_INIT_TOV               120
+#define ADAPTER_RESET_TOV              180
+#define EXTEND_CMD_TOV                 60
+#define WAIT_CMD_TOV                   30
+#define EH_WAIT_CMD_TOV                        120
+#define FIRMWARE_UP_TOV                        60
+#define RESET_FIRMWARE_TOV             30
+#define LOGOUT_TOV                     10
+#define IOCB_TOV_MARGIN                        10
+#define RELOGIN_TOV                    18
+#define ISNS_DEREG_TOV                 5
+
+#define MAX_RESET_HA_RETRIES           2
+
+/*
+ * SCSI Request Block structure         (srb)  that is placed
+ * on cmd->SCp location of every I/O    [We have 22 bytes available]
+ */
+struct srb {
+       struct list_head list;  /* (8)   */
+       struct scsi_qla_host *ha;       /* HA the SP is queued on */
+       struct ddb_entry        *ddb;
+       uint16_t flags;         /* (1) Status flags. */
+
+#define SRB_DMA_VALID          BIT_3   /* DMA Buffer mapped. */
+#define SRB_GOT_SENSE          BIT_4   /* sense data recieved. */
+       uint8_t state;          /* (1) Status flags. */
+
+#define SRB_NO_QUEUE_STATE      0      /* Request is in between states */
+#define SRB_FREE_STATE          1
+#define SRB_ACTIVE_STATE        3
+#define SRB_ACTIVE_TIMEOUT_STATE 4
+#define SRB_SUSPENDED_STATE     7      /* Request in suspended state */
+
+       struct scsi_cmnd *cmd;  /* (4) SCSI command block */
+       dma_addr_t dma_handle;  /* (4) for unmap of single transfers */
+       atomic_t ref_count;     /* reference count for this srb */
+       uint32_t fw_ddb_index;
+       uint8_t err_id;         /* error id */
+#define SRB_ERR_PORT      1    /* Request failed because "port down" */
+#define SRB_ERR_LOOP      2    /* Request failed because "loop down" */
+#define SRB_ERR_DEVICE    3    /* Request failed because "device error" */
+#define SRB_ERR_OTHER     4
+
+       uint16_t reserved;
+       uint16_t iocb_tov;
+       uint16_t iocb_cnt;      /* Number of used iocbs */
+       uint16_t cc_stat;
+       u_long r_start;         /* Time we recieve a cmd from OS */
+       u_long u_start;         /* Time when we handed the cmd to F/W */
+};
+
+       /*
+        * Device Database (DDB) structure
+        */
+struct ddb_entry {
+       struct list_head list;  /* ddb list */
+       struct scsi_qla_host *ha;
+       struct iscsi_cls_session *sess;
+       struct iscsi_cls_conn *conn;
+
+       atomic_t state;         /* DDB State */
+
+       unsigned long flags;    /* DDB Flags */
+
+       unsigned long dev_scan_wait_to_start_relogin;
+       unsigned long dev_scan_wait_to_complete_relogin;
+
+       uint16_t os_target_id;  /* Target ID */
+       uint16_t fw_ddb_index;  /* DDB firmware index */
+       uint8_t reserved[2];
+       uint32_t fw_ddb_device_state; /* F/W Device State  -- see ql4_fw.h */
+
+       uint32_t CmdSn;
+       uint16_t target_session_id;
+       uint16_t connection_id;
+       uint16_t exe_throttle;  /* Max mumber of cmds outstanding
+                                * simultaneously */
+       uint16_t task_mgmt_timeout; /* Min time for task mgmt cmds to
+                                    * complete */
+       uint16_t default_relogin_timeout; /*  Max time to wait for
+                                          *  relogin to complete */
+       uint16_t tcp_source_port_num;
+       uint32_t default_time2wait; /* Default Min time between
+                                    * relogins (+aens) */
+
+       atomic_t port_down_timer; /* Device connection timer */
+       atomic_t retry_relogin_timer; /* Min Time between relogins
+                                      * (4000 only) */
+       atomic_t relogin_timer; /* Max Time to wait for relogin to complete */
+       atomic_t relogin_retry_count; /* Num of times relogin has been
+                                      * retried */
+
+       uint16_t port;
+       uint32_t tpgt;
+       uint8_t ip_addr[ISCSI_IPADDR_SIZE];
+       uint8_t iscsi_name[ISCSI_NAME_SIZE];    /* 72 x48 */
+       uint8_t iscsi_alias[0x20];
+};
+
+/*
+ * DDB states.
+ */
+#define DDB_STATE_DEAD         0       /* We can no longer talk to
+                                        * this device */
+#define DDB_STATE_ONLINE       1       /* Device ready to accept
+                                        * commands */
+#define DDB_STATE_MISSING      2       /* Device logged off, trying
+                                        * to re-login */
+
+/*
+ * DDB flags.
+ */
+#define DF_RELOGIN             0       /* Relogin to device */
+#define DF_NO_RELOGIN          1       /* Do not relogin if IOCTL
+                                        * logged it out */
+#define DF_ISNS_DISCOVERED     2       /* Device was discovered via iSNS */
+#define DF_FO_MASKED           3
+
+/*
+ * Asynchronous Event Queue structure
+ */
+struct aen {
+       uint32_t mbox_sts[MBOX_AEN_REG_COUNT];
+};
+
+
+#include "ql4_fw.h"
+#include "ql4_nvram.h"
+
+/*
+ * Linux Host Adapter structure
+ */
+struct scsi_qla_host {
+       /* Linux adapter configuration data */
+       struct Scsi_Host *host; /* pointer to host data */
+       uint32_t tot_ddbs;
+       unsigned long flags;
+
+#define AF_ONLINE                    0 /* 0x00000001 */
+#define AF_INIT_DONE                 1 /* 0x00000002 */
+#define AF_MBOX_COMMAND                      2 /* 0x00000004 */
+#define AF_MBOX_COMMAND_DONE         3 /* 0x00000008 */
+#define AF_INTERRUPTS_ON             6 /* 0x00000040 Not Used */
+#define AF_GET_CRASH_RECORD          7 /* 0x00000080 */
+#define AF_LINK_UP                   8 /* 0x00000100 */
+#define AF_TOPCAT_CHIP_PRESENT       9 /* 0x00000200 */
+#define AF_IRQ_ATTACHED                     10 /* 0x00000400 */
+#define AF_ISNS_CMD_IN_PROCESS      12 /* 0x00001000 */
+#define AF_ISNS_CMD_DONE            13 /* 0x00002000 */
+
+       unsigned long dpc_flags;
+
+#define DPC_RESET_HA                 1 /* 0x00000002 */
+#define DPC_RETRY_RESET_HA           2 /* 0x00000004 */
+#define DPC_RELOGIN_DEVICE           3 /* 0x00000008 */
+#define DPC_RESET_HA_DESTROY_DDB_LIST 4 /* 0x00000010 */
+#define DPC_RESET_HA_INTR            5 /* 0x00000020 */
+#define DPC_ISNS_RESTART             7 /* 0x00000080 */
+#define DPC_AEN                              9 /* 0x00000200 */
+#define DPC_GET_DHCP_IP_ADDR        15 /* 0x00008000 */
+
+       uint16_t        iocb_cnt;
+       uint16_t        iocb_hiwat;
+
+       /* SRB cache. */
+#define SRB_MIN_REQ    128
+       mempool_t *srb_mempool;
+
+       /* pci information */
+       struct pci_dev *pdev;
+
+       struct isp_reg __iomem *reg; /* Base I/O address */
+       unsigned long pio_address;
+       unsigned long pio_length;
+#define MIN_IOBASE_LEN         0x100
+
+       uint16_t req_q_count;
+       uint8_t marker_needed;
+       uint8_t rsvd1;
+
+       unsigned long host_no;
+
+       /* NVRAM registers */
+       struct eeprom_data *nvram;
+       spinlock_t hardware_lock ____cacheline_aligned;
+       spinlock_t list_lock;
+       uint32_t   eeprom_cmd_data;
+
+       /* Counters for general statistics */
+       uint64_t adapter_error_count;
+       uint64_t device_error_count;
+       uint64_t total_io_count;
+       uint64_t total_mbytes_xferred;
+       uint64_t link_failure_count;
+       uint64_t invalid_crc_count;
+       uint32_t spurious_int_count;
+       uint32_t aborted_io_count;
+       uint32_t io_timeout_count;
+       uint32_t mailbox_timeout_count;
+       uint32_t seconds_since_last_intr;
+       uint32_t seconds_since_last_heartbeat;
+       uint32_t mac_index;
+
+       /* Info Needed for Management App */
+       /* --- From GetFwVersion --- */
+       uint32_t firmware_version[2];
+       uint32_t patch_number;
+       uint32_t build_number;
+
+       /* --- From Init_FW --- */
+       /* init_cb_t *init_cb; */
+       uint16_t firmware_options;
+       uint16_t tcp_options;
+       uint8_t ip_address[IP_ADDR_LEN];
+       uint8_t subnet_mask[IP_ADDR_LEN];
+       uint8_t gateway[IP_ADDR_LEN];
+       uint8_t alias[32];
+       uint8_t name_string[256];
+       uint8_t heartbeat_interval;
+       uint8_t rsvd;
+
+       /* --- From FlashSysInfo --- */
+       uint8_t my_mac[MAC_ADDR_LEN];
+       uint8_t serial_number[16];
+
+       /* --- From GetFwState --- */
+       uint32_t firmware_state;
+       uint32_t board_id;
+       uint32_t addl_fw_state;
+
+       /* Linux kernel thread */
+       struct workqueue_struct *dpc_thread;
+       struct work_struct dpc_work;
+
+       /* Linux timer thread */
+       struct timer_list timer;
+       uint32_t timer_active;
+
+       /* Recovery Timers */
+       uint32_t port_down_retry_count;
+       uint32_t discovery_wait;
+       atomic_t check_relogin_timeouts;
+       uint32_t retry_reset_ha_cnt;
+       uint32_t isp_reset_timer;       /* reset test timer */
+       uint32_t nic_reset_timer;       /* simulated nic reset test timer */
+       int eh_start;
+       struct list_head free_srb_q;
+       uint16_t free_srb_q_count;
+       uint16_t num_srbs_allocated;
+
+       /* DMA Memory Block */
+       void *queues;
+       dma_addr_t queues_dma;
+       unsigned long queues_len;
+
+#define MEM_ALIGN_VALUE \
+           ((max(REQUEST_QUEUE_DEPTH, RESPONSE_QUEUE_DEPTH)) * \
+            sizeof(struct queue_entry))
+       /* request and response queue variables */
+       dma_addr_t request_dma;
+       struct queue_entry *request_ring;
+       struct queue_entry *request_ptr;
+       dma_addr_t response_dma;
+       struct queue_entry *response_ring;
+       struct queue_entry *response_ptr;
+       dma_addr_t shadow_regs_dma;
+       struct shadow_regs *shadow_regs;
+       uint16_t request_in;    /* Current indexes. */
+       uint16_t request_out;
+       uint16_t response_in;
+       uint16_t response_out;
+
+       /* aen queue variables */
+       uint16_t aen_q_count;   /* Number of available aen_q entries */
+       uint16_t aen_in;        /* Current indexes */
+       uint16_t aen_out;
+       struct aen aen_q[MAX_AEN_ENTRIES];
+
+       /* This mutex protects several threads to do mailbox commands
+        * concurrently.
+        */
+       struct mutex  mbox_sem;
+       wait_queue_head_t mailbox_wait_queue;
+
+       /* temporary mailbox status registers */
+       volatile uint8_t mbox_status_count;
+       volatile uint32_t mbox_status[MBOX_REG_COUNT];
+
+       /* local device database list (contains internal ddb entries) */
+       struct list_head ddb_list;
+
+       /* Map ddb_list entry by FW ddb index */
+       struct ddb_entry *fw_ddb_index_map[MAX_DDB_ENTRIES];
+
+};
+
+static inline int is_qla4010(struct scsi_qla_host *ha)
+{
+       return ha->pdev->device == PCI_DEVICE_ID_QLOGIC_ISP4010;
+}
+
+static inline int is_qla4022(struct scsi_qla_host *ha)
+{
+       return ha->pdev->device == PCI_DEVICE_ID_QLOGIC_ISP4022;
+}
+
+static inline int adapter_up(struct scsi_qla_host *ha)
+{
+       return (test_bit(AF_ONLINE, &ha->flags) != 0) &&
+               (test_bit(AF_LINK_UP, &ha->flags) != 0);
+}
+
+static inline struct scsi_qla_host* to_qla_host(struct Scsi_Host *shost)
+{
+       return (struct scsi_qla_host *)shost->hostdata;
+}
+
+static inline void __iomem* isp_semaphore(struct scsi_qla_host *ha)
+{
+       return (is_qla4022(ha) ?
+               &ha->reg->u1.isp4022.semaphore :
+               &ha->reg->u1.isp4010.nvram);
+}
+
+static inline void __iomem* isp_nvram(struct scsi_qla_host *ha)
+{
+       return (is_qla4022(ha) ?
+               &ha->reg->u1.isp4022.nvram :
+               &ha->reg->u1.isp4010.nvram);
+}
+
+static inline void __iomem* isp_ext_hw_conf(struct scsi_qla_host *ha)
+{
+       return (is_qla4022(ha) ?
+               &ha->reg->u2.isp4022.p0.ext_hw_conf :
+               &ha->reg->u2.isp4010.ext_hw_conf);
+}
+
+static inline void __iomem* isp_port_status(struct scsi_qla_host *ha)
+{
+       return (is_qla4022(ha) ?
+               &ha->reg->u2.isp4022.p0.port_status :
+               &ha->reg->u2.isp4010.port_status);
+}
+
+static inline void __iomem* isp_port_ctrl(struct scsi_qla_host *ha)
+{
+       return (is_qla4022(ha) ?
+               &ha->reg->u2.isp4022.p0.port_ctrl :
+               &ha->reg->u2.isp4010.port_ctrl);
+}
+
+static inline void __iomem* isp_port_error_status(struct scsi_qla_host *ha)
+{
+       return (is_qla4022(ha) ?
+               &ha->reg->u2.isp4022.p0.port_err_status :
+               &ha->reg->u2.isp4010.port_err_status);
+}
+
+static inline void __iomem * isp_gp_out(struct scsi_qla_host *ha)
+{
+       return (is_qla4022(ha) ?
+               &ha->reg->u2.isp4022.p0.gp_out :
+               &ha->reg->u2.isp4010.gp_out);
+}
+
+static inline int eeprom_ext_hw_conf_offset(struct scsi_qla_host *ha)
+{
+       return (is_qla4022(ha) ?
+               offsetof(struct eeprom_data, isp4022.ext_hw_conf) / 2 :
+               offsetof(struct eeprom_data, isp4010.ext_hw_conf) / 2);
+}
+
+int ql4xxx_sem_spinlock(struct scsi_qla_host * ha, u32 sem_mask, u32 sem_bits);
+void ql4xxx_sem_unlock(struct scsi_qla_host * ha, u32 sem_mask);
+int ql4xxx_sem_lock(struct scsi_qla_host * ha, u32 sem_mask, u32 sem_bits);
+
+static inline int ql4xxx_lock_flash(struct scsi_qla_host *a)
+{
+       if (is_qla4022(a))
+               return ql4xxx_sem_spinlock(a, QL4022_FLASH_SEM_MASK,
+                                          (QL4022_RESOURCE_BITS_BASE_CODE |
+                                           (a->mac_index)) << 13);
+       else
+               return ql4xxx_sem_spinlock(a, QL4010_FLASH_SEM_MASK,
+                                          QL4010_FLASH_SEM_BITS);
+}
+
+static inline void ql4xxx_unlock_flash(struct scsi_qla_host *a)
+{
+       if (is_qla4022(a))
+               ql4xxx_sem_unlock(a, QL4022_FLASH_SEM_MASK);
+       else
+               ql4xxx_sem_unlock(a, QL4010_FLASH_SEM_MASK);
+}
+
+static inline int ql4xxx_lock_nvram(struct scsi_qla_host *a)
+{
+       if (is_qla4022(a))
+               return ql4xxx_sem_spinlock(a, QL4022_NVRAM_SEM_MASK,
+                                          (QL4022_RESOURCE_BITS_BASE_CODE |
+                                           (a->mac_index)) << 10);
+       else
+               return ql4xxx_sem_spinlock(a, QL4010_NVRAM_SEM_MASK,
+                                          QL4010_NVRAM_SEM_BITS);
+}
+
+static inline void ql4xxx_unlock_nvram(struct scsi_qla_host *a)
+{
+       if (is_qla4022(a))
+               ql4xxx_sem_unlock(a, QL4022_NVRAM_SEM_MASK);
+       else
+               ql4xxx_sem_unlock(a, QL4010_NVRAM_SEM_MASK);
+}
+
+static inline int ql4xxx_lock_drvr(struct scsi_qla_host *a)
+{
+       if (is_qla4022(a))
+               return ql4xxx_sem_lock(a, QL4022_DRVR_SEM_MASK,
+                                      (QL4022_RESOURCE_BITS_BASE_CODE |
+                                       (a->mac_index)) << 1);
+       else
+               return ql4xxx_sem_lock(a, QL4010_DRVR_SEM_MASK,
+                                      QL4010_DRVR_SEM_BITS);
+}
+
+static inline void ql4xxx_unlock_drvr(struct scsi_qla_host *a)
+{
+       if (is_qla4022(a))
+               ql4xxx_sem_unlock(a, QL4022_DRVR_SEM_MASK);
+       else
+               ql4xxx_sem_unlock(a, QL4010_DRVR_SEM_MASK);
+}
+
+/*---------------------------------------------------------------------------*/
+
+/* Defines for qla4xxx_initialize_adapter() and qla4xxx_recover_adapter() */
+#define PRESERVE_DDB_LIST      0
+#define REBUILD_DDB_LIST       1
+
+/* Defines for process_aen() */
+#define PROCESS_ALL_AENS        0
+#define FLUSH_DDB_CHANGED_AENS  1
+#define RELOGIN_DDB_CHANGED_AENS 2
+
+#include "ql4_version.h"
+#include "ql4_glbl.h"
+#include "ql4_dbg.h"
+#include "ql4_inline.h"
+
+
+#endif /*_QLA4XXX_H */
diff --git a/drivers/scsi/qla4xxx/ql4_fw.h b/drivers/scsi/qla4xxx/ql4_fw.h
new file mode 100644 (file)
index 0000000..427489d
--- /dev/null
@@ -0,0 +1,843 @@
+/*
+ * QLogic iSCSI HBA Driver
+ * Copyright (c)  2003-2006 QLogic Corporation
+ *
+ * See LICENSE.qla4xxx for copyright and licensing details.
+ */
+
+#ifndef _QLA4X_FW_H
+#define _QLA4X_FW_H
+
+
+#define MAX_PRST_DEV_DB_ENTRIES                64
+#define MIN_DISC_DEV_DB_ENTRY          MAX_PRST_DEV_DB_ENTRIES
+#define MAX_DEV_DB_ENTRIES 512
+
+/*************************************************************************
+ *
+ *             ISP 4010 I/O Register Set Structure and Definitions
+ *
+ *************************************************************************/
+
+struct port_ctrl_stat_regs {
+       __le32 ext_hw_conf;     /*  80 x50  R/W */
+       __le32 intChipConfiguration; /*  84 x54 */
+       __le32 port_ctrl;       /*  88 x58 */
+       __le32 port_status;     /*  92 x5c */
+       __le32 HostPrimMACHi;   /*  96 x60 */
+       __le32 HostPrimMACLow;  /* 100 x64 */
+       __le32 HostSecMACHi;    /* 104 x68 */
+       __le32 HostSecMACLow;   /* 108 x6c */
+       __le32 EPPrimMACHi;     /* 112 x70 */
+       __le32 EPPrimMACLow;    /* 116 x74 */
+       __le32 EPSecMACHi;      /* 120 x78 */
+       __le32 EPSecMACLow;     /* 124 x7c */
+       __le32 HostPrimIPHi;    /* 128 x80 */
+       __le32 HostPrimIPMidHi; /* 132 x84 */
+       __le32 HostPrimIPMidLow;        /* 136 x88 */
+       __le32 HostPrimIPLow;   /* 140 x8c */
+       __le32 HostSecIPHi;     /* 144 x90 */
+       __le32 HostSecIPMidHi;  /* 148 x94 */
+       __le32 HostSecIPMidLow; /* 152 x98 */
+       __le32 HostSecIPLow;    /* 156 x9c */
+       __le32 EPPrimIPHi;      /* 160 xa0 */
+       __le32 EPPrimIPMidHi;   /* 164 xa4 */
+       __le32 EPPrimIPMidLow;  /* 168 xa8 */
+       __le32 EPPrimIPLow;     /* 172 xac */
+       __le32 EPSecIPHi;       /* 176 xb0 */
+       __le32 EPSecIPMidHi;    /* 180 xb4 */
+       __le32 EPSecIPMidLow;   /* 184 xb8 */
+       __le32 EPSecIPLow;      /* 188 xbc */
+       __le32 IPReassemblyTimeout; /* 192 xc0 */
+       __le32 EthMaxFramePayload; /* 196 xc4 */
+       __le32 TCPMaxWindowSize; /* 200 xc8 */
+       __le32 TCPCurrentTimestampHi; /* 204 xcc */
+       __le32 TCPCurrentTimestampLow; /* 208 xd0 */
+       __le32 LocalRAMAddress; /* 212 xd4 */
+       __le32 LocalRAMData;    /* 216 xd8 */
+       __le32 PCSReserved1;    /* 220 xdc */
+       __le32 gp_out;          /* 224 xe0 */
+       __le32 gp_in;           /* 228 xe4 */
+       __le32 ProbeMuxAddr;    /* 232 xe8 */
+       __le32 ProbeMuxData;    /* 236 xec */
+       __le32 ERMQueueBaseAddr0; /* 240 xf0 */
+       __le32 ERMQueueBaseAddr1; /* 244 xf4 */
+       __le32 MACConfiguration; /* 248 xf8 */
+       __le32 port_err_status; /* 252 xfc  COR */
+};
+
+struct host_mem_cfg_regs {
+       __le32 NetRequestQueueOut; /*  80 x50 */
+       __le32 NetRequestQueueOutAddrHi; /*  84 x54 */
+       __le32 NetRequestQueueOutAddrLow; /*  88 x58 */
+       __le32 NetRequestQueueBaseAddrHi; /*  92 x5c */
+       __le32 NetRequestQueueBaseAddrLow; /*  96 x60 */
+       __le32 NetRequestQueueLength; /* 100 x64 */
+       __le32 NetResponseQueueIn; /* 104 x68 */
+       __le32 NetResponseQueueInAddrHi; /* 108 x6c */
+       __le32 NetResponseQueueInAddrLow; /* 112 x70 */
+       __le32 NetResponseQueueBaseAddrHi; /* 116 x74 */
+       __le32 NetResponseQueueBaseAddrLow; /* 120 x78 */
+       __le32 NetResponseQueueLength; /* 124 x7c */
+       __le32 req_q_out;       /* 128 x80 */
+       __le32 RequestQueueOutAddrHi; /* 132 x84 */
+       __le32 RequestQueueOutAddrLow; /* 136 x88 */
+       __le32 RequestQueueBaseAddrHi; /* 140 x8c */
+       __le32 RequestQueueBaseAddrLow; /* 144 x90 */
+       __le32 RequestQueueLength; /* 148 x94 */
+       __le32 ResponseQueueIn; /* 152 x98 */
+       __le32 ResponseQueueInAddrHi; /* 156 x9c */
+       __le32 ResponseQueueInAddrLow; /* 160 xa0 */
+       __le32 ResponseQueueBaseAddrHi; /* 164 xa4 */
+       __le32 ResponseQueueBaseAddrLow; /* 168 xa8 */
+       __le32 ResponseQueueLength; /* 172 xac */
+       __le32 NetRxLargeBufferQueueOut; /* 176 xb0 */
+       __le32 NetRxLargeBufferQueueBaseAddrHi; /* 180 xb4 */
+       __le32 NetRxLargeBufferQueueBaseAddrLow; /* 184 xb8 */
+       __le32 NetRxLargeBufferQueueLength; /* 188 xbc */
+       __le32 NetRxLargeBufferLength; /* 192 xc0 */
+       __le32 NetRxSmallBufferQueueOut; /* 196 xc4 */
+       __le32 NetRxSmallBufferQueueBaseAddrHi; /* 200 xc8 */
+       __le32 NetRxSmallBufferQueueBaseAddrLow; /* 204 xcc */
+       __le32 NetRxSmallBufferQueueLength; /* 208 xd0 */
+       __le32 NetRxSmallBufferLength; /* 212 xd4 */
+       __le32 HMCReserved0[10]; /* 216 xd8 */
+};
+
+struct local_ram_cfg_regs {
+       __le32 BufletSize;      /*  80 x50 */
+       __le32 BufletMaxCount;  /*  84 x54 */
+       __le32 BufletCurrCount; /*  88 x58 */
+       __le32 BufletPauseThresholdCount; /*  92 x5c */
+       __le32 BufletTCPWinThresholdHi; /*  96 x60 */
+       __le32 BufletTCPWinThresholdLow; /* 100 x64 */
+       __le32 IPHashTableBaseAddr; /* 104 x68 */
+       __le32 IPHashTableSize; /* 108 x6c */
+       __le32 TCPHashTableBaseAddr; /* 112 x70 */
+       __le32 TCPHashTableSize; /* 116 x74 */
+       __le32 NCBAreaBaseAddr; /* 120 x78 */
+       __le32 NCBMaxCount;     /* 124 x7c */
+       __le32 NCBCurrCount;    /* 128 x80 */
+       __le32 DRBAreaBaseAddr; /* 132 x84 */
+       __le32 DRBMaxCount;     /* 136 x88 */
+       __le32 DRBCurrCount;    /* 140 x8c */
+       __le32 LRCReserved[28]; /* 144 x90 */
+};
+
+struct prot_stat_regs {
+       __le32 MACTxFrameCount; /*  80 x50   R */
+       __le32 MACTxByteCount;  /*  84 x54   R */
+       __le32 MACRxFrameCount; /*  88 x58   R */
+       __le32 MACRxByteCount;  /*  92 x5c   R */
+       __le32 MACCRCErrCount;  /*  96 x60   R */
+       __le32 MACEncErrCount;  /* 100 x64   R */
+       __le32 MACRxLengthErrCount; /* 104 x68   R */
+       __le32 IPTxPacketCount; /* 108 x6c   R */
+       __le32 IPTxByteCount;   /* 112 x70   R */
+       __le32 IPTxFragmentCount; /* 116 x74   R */
+       __le32 IPRxPacketCount; /* 120 x78   R */
+       __le32 IPRxByteCount;   /* 124 x7c   R */
+       __le32 IPRxFragmentCount; /* 128 x80   R */
+       __le32 IPDatagramReassemblyCount; /* 132 x84   R */
+       __le32 IPV6RxPacketCount; /* 136 x88   R */
+       __le32 IPErrPacketCount; /* 140 x8c   R */
+       __le32 IPReassemblyErrCount; /* 144 x90   R */
+       __le32 TCPTxSegmentCount; /* 148 x94   R */
+       __le32 TCPTxByteCount;  /* 152 x98   R */
+       __le32 TCPRxSegmentCount; /* 156 x9c   R */
+       __le32 TCPRxByteCount;  /* 160 xa0   R */
+       __le32 TCPTimerExpCount; /* 164 xa4   R */
+       __le32 TCPRxAckCount;   /* 168 xa8   R */
+       __le32 TCPTxAckCount;   /* 172 xac   R */
+       __le32 TCPRxErrOOOCount; /* 176 xb0   R */
+       __le32 PSReserved0;     /* 180 xb4 */
+       __le32 TCPRxWindowProbeUpdateCount; /* 184 xb8   R */
+       __le32 ECCErrCorrectionCount; /* 188 xbc   R */
+       __le32 PSReserved1[16]; /* 192 xc0 */
+};
+
+
+/*  remote register set (access via PCI memory read/write) */
+struct isp_reg {
+#define MBOX_REG_COUNT 8
+       __le32 mailbox[MBOX_REG_COUNT];
+
+       __le32 flash_address;   /* 0x20 */
+       __le32 flash_data;
+       __le32 ctrl_status;
+
+       union {
+               struct {
+                       __le32 nvram;
+                       __le32 reserved1[2]; /* 0x30 */
+               } __attribute__ ((packed)) isp4010;
+               struct {
+                       __le32 intr_mask;
+                       __le32 nvram; /* 0x30 */
+                       __le32 semaphore;
+               } __attribute__ ((packed)) isp4022;
+       } u1;
+
+       __le32 req_q_in;    /* SCSI Request Queue Producer Index */
+       __le32 rsp_q_out;   /* SCSI Completion Queue Consumer Index */
+
+       __le32 reserved2[4];    /* 0x40 */
+
+       union {
+               struct {
+                       __le32 ext_hw_conf; /* 0x50 */
+                       __le32 flow_ctrl;
+                       __le32 port_ctrl;
+                       __le32 port_status;
+
+                       __le32 reserved3[8]; /* 0x60 */
+
+                       __le32 req_q_out; /* 0x80 */
+
+                       __le32 reserved4[23]; /* 0x84 */
+
+                       __le32 gp_out; /* 0xe0 */
+                       __le32 gp_in;
+
+                       __le32 reserved5[5];
+
+                       __le32 port_err_status; /* 0xfc */
+               } __attribute__ ((packed)) isp4010;
+               struct {
+                       union {
+                               struct port_ctrl_stat_regs p0;
+                               struct host_mem_cfg_regs p1;
+                               struct local_ram_cfg_regs p2;
+                               struct prot_stat_regs p3;
+                               __le32 r_union[44];
+                       };
+
+               } __attribute__ ((packed)) isp4022;
+       } u2;
+};                             /* 256 x100 */
+
+
+/* Semaphore Defines for 4010 */
+#define QL4010_DRVR_SEM_BITS   0x00000030
+#define QL4010_GPIO_SEM_BITS   0x000000c0
+#define QL4010_SDRAM_SEM_BITS  0x00000300
+#define QL4010_PHY_SEM_BITS    0x00000c00
+#define QL4010_NVRAM_SEM_BITS  0x00003000
+#define QL4010_FLASH_SEM_BITS  0x0000c000
+
+#define QL4010_DRVR_SEM_MASK   0x00300000
+#define QL4010_GPIO_SEM_MASK   0x00c00000
+#define QL4010_SDRAM_SEM_MASK  0x03000000
+#define QL4010_PHY_SEM_MASK    0x0c000000
+#define QL4010_NVRAM_SEM_MASK  0x30000000
+#define QL4010_FLASH_SEM_MASK  0xc0000000
+
+/* Semaphore Defines for 4022 */
+#define QL4022_RESOURCE_MASK_BASE_CODE 0x7
+#define QL4022_RESOURCE_BITS_BASE_CODE 0x4
+
+
+#define QL4022_DRVR_SEM_MASK   (QL4022_RESOURCE_MASK_BASE_CODE << (1+16))
+#define QL4022_DDR_RAM_SEM_MASK (QL4022_RESOURCE_MASK_BASE_CODE << (4+16))
+#define QL4022_PHY_GIO_SEM_MASK (QL4022_RESOURCE_MASK_BASE_CODE << (7+16))
+#define QL4022_NVRAM_SEM_MASK  (QL4022_RESOURCE_MASK_BASE_CODE << (10+16))
+#define QL4022_FLASH_SEM_MASK  (QL4022_RESOURCE_MASK_BASE_CODE << (13+16))
+
+
+
+/* Page # defines for 4022 */
+#define PORT_CTRL_STAT_PAGE                    0       /* 4022 */
+#define HOST_MEM_CFG_PAGE                      1       /* 4022 */
+#define LOCAL_RAM_CFG_PAGE                     2       /* 4022 */
+#define PROT_STAT_PAGE                         3       /* 4022 */
+
+/* Register Mask - sets corresponding mask bits in the upper word */
+static inline uint32_t set_rmask(uint32_t val)
+{
+       return (val & 0xffff) | (val << 16);
+}
+
+
+static inline uint32_t clr_rmask(uint32_t val)
+{
+       return 0 | (val << 16);
+}
+
+/*  ctrl_status definitions */
+#define CSR_SCSI_PAGE_SELECT                   0x00000003
+#define CSR_SCSI_INTR_ENABLE                   0x00000004      /* 4010 */
+#define CSR_SCSI_RESET_INTR                    0x00000008
+#define CSR_SCSI_COMPLETION_INTR               0x00000010
+#define CSR_SCSI_PROCESSOR_INTR                        0x00000020
+#define CSR_INTR_RISC                          0x00000040
+#define CSR_BOOT_ENABLE                                0x00000080
+#define CSR_NET_PAGE_SELECT                    0x00000300      /* 4010 */
+#define CSR_FUNC_NUM                           0x00000700      /* 4022 */
+#define CSR_NET_RESET_INTR                     0x00000800      /* 4010 */
+#define CSR_FORCE_SOFT_RESET                   0x00002000      /* 4022 */
+#define CSR_FATAL_ERROR                                0x00004000
+#define CSR_SOFT_RESET                         0x00008000
+#define ISP_CONTROL_FN_MASK                    CSR_FUNC_NUM
+#define ISP_CONTROL_FN0_SCSI                   0x0500
+#define ISP_CONTROL_FN1_SCSI                   0x0700
+
+#define INTR_PENDING                           (CSR_SCSI_COMPLETION_INTR |\
+                                                CSR_SCSI_PROCESSOR_INTR |\
+                                                CSR_SCSI_RESET_INTR)
+
+/* ISP InterruptMask definitions */
+#define IMR_SCSI_INTR_ENABLE                   0x00000004      /* 4022 */
+
+/* ISP 4022 nvram definitions */
+#define NVR_WRITE_ENABLE                       0x00000010      /* 4022 */
+
+/*  ISP port_status definitions */
+
+/*  ISP Semaphore definitions */
+
+/*  ISP General Purpose Output definitions */
+#define GPOR_TOPCAT_RESET                      0x00000004
+
+/*  shadow registers (DMA'd from HA to system memory.  read only) */
+struct shadow_regs {
+       /* SCSI Request Queue Consumer Index */
+       __le32 req_q_out;       /*  0 x0   R */
+
+       /* SCSI Completion Queue Producer Index */
+       __le32 rsp_q_in;        /*  4 x4   R */
+};               /*  8 x8 */
+
+
+/*  External hardware configuration register */
+union external_hw_config_reg {
+       struct {
+               /* FIXME: Do we even need this?  All values are
+                * referred to by 16 bit quantities.  Platform and
+                * endianess issues. */
+               __le32 bReserved0:1;
+               __le32 bSDRAMProtectionMethod:2;
+               __le32 bSDRAMBanks:1;
+               __le32 bSDRAMChipWidth:1;
+               __le32 bSDRAMChipSize:2;
+               __le32 bParityDisable:1;
+               __le32 bExternalMemoryType:1;
+               __le32 bFlashBIOSWriteEnable:1;
+               __le32 bFlashUpperBankSelect:1;
+               __le32 bWriteBurst:2;
+               __le32 bReserved1:3;
+               __le32 bMask:16;
+       };
+       uint32_t Asuint32_t;
+};
+
+/*************************************************************************
+ *
+ *             Mailbox Commands Structures and Definitions
+ *
+ *************************************************************************/
+
+/*  Mailbox command definitions */
+#define MBOX_CMD_ABOUT_FW                      0x0009
+#define MBOX_CMD_LUN_RESET                     0x0016
+#define MBOX_CMD_GET_FW_STATUS                 0x001F
+#define MBOX_CMD_SET_ISNS_SERVICE              0x0021
+#define ISNS_DISABLE                           0
+#define ISNS_ENABLE                            1
+#define MBOX_CMD_READ_FLASH                    0x0026
+#define MBOX_CMD_CLEAR_DATABASE_ENTRY          0x0031
+#define MBOX_CMD_CONN_CLOSE_SESS_LOGOUT                0x0056
+#define LOGOUT_OPTION_CLOSE_SESSION            0x01
+#define LOGOUT_OPTION_RELOGIN                  0x02
+#define MBOX_CMD_EXECUTE_IOCB_A64              0x005A
+#define MBOX_CMD_INITIALIZE_FIRMWARE           0x0060
+#define MBOX_CMD_GET_INIT_FW_CTRL_BLOCK                0x0061
+#define MBOX_CMD_REQUEST_DATABASE_ENTRY                0x0062
+#define MBOX_CMD_SET_DATABASE_ENTRY            0x0063
+#define MBOX_CMD_GET_DATABASE_ENTRY            0x0064
+#define DDB_DS_UNASSIGNED                      0x00
+#define DDB_DS_NO_CONNECTION_ACTIVE            0x01
+#define DDB_DS_SESSION_ACTIVE                  0x04
+#define DDB_DS_SESSION_FAILED                  0x06
+#define DDB_DS_LOGIN_IN_PROCESS                        0x07
+#define MBOX_CMD_GET_FW_STATE                  0x0069
+
+/* Mailbox 1 */
+#define FW_STATE_READY                         0x0000
+#define FW_STATE_CONFIG_WAIT                   0x0001
+#define FW_STATE_ERROR                         0x0004
+#define FW_STATE_DHCP_IN_PROGRESS              0x0008
+
+/* Mailbox 3 */
+#define FW_ADDSTATE_OPTICAL_MEDIA              0x0001
+#define FW_ADDSTATE_DHCP_ENABLED               0x0002
+#define FW_ADDSTATE_LINK_UP                    0x0010
+#define FW_ADDSTATE_ISNS_SVC_ENABLED           0x0020
+#define MBOX_CMD_GET_DATABASE_ENTRY_DEFAULTS   0x006B
+#define MBOX_CMD_CONN_OPEN_SESS_LOGIN          0x0074
+#define MBOX_CMD_GET_CRASH_RECORD              0x0076  /* 4010 only */
+#define MBOX_CMD_GET_CONN_EVENT_LOG            0x0077
+
+/*  Mailbox status definitions */
+#define MBOX_COMPLETION_STATUS                 4
+#define MBOX_STS_BUSY                          0x0007
+#define MBOX_STS_INTERMEDIATE_COMPLETION       0x1000
+#define MBOX_STS_COMMAND_COMPLETE              0x4000
+#define MBOX_STS_COMMAND_ERROR                 0x4005
+
+#define MBOX_ASYNC_EVENT_STATUS                        8
+#define MBOX_ASTS_SYSTEM_ERROR                 0x8002
+#define MBOX_ASTS_REQUEST_TRANSFER_ERROR       0x8003
+#define MBOX_ASTS_RESPONSE_TRANSFER_ERROR      0x8004
+#define MBOX_ASTS_PROTOCOL_STATISTIC_ALARM     0x8005
+#define MBOX_ASTS_SCSI_COMMAND_PDU_REJECTED    0x8006
+#define MBOX_ASTS_LINK_UP                      0x8010
+#define MBOX_ASTS_LINK_DOWN                    0x8011
+#define MBOX_ASTS_DATABASE_CHANGED             0x8014
+#define MBOX_ASTS_UNSOLICITED_PDU_RECEIVED     0x8015
+#define MBOX_ASTS_SELF_TEST_FAILED             0x8016
+#define MBOX_ASTS_LOGIN_FAILED                 0x8017
+#define MBOX_ASTS_DNS                          0x8018
+#define MBOX_ASTS_HEARTBEAT                    0x8019
+#define MBOX_ASTS_NVRAM_INVALID                        0x801A
+#define MBOX_ASTS_MAC_ADDRESS_CHANGED          0x801B
+#define MBOX_ASTS_IP_ADDRESS_CHANGED           0x801C
+#define MBOX_ASTS_DHCP_LEASE_EXPIRED           0x801D
+#define MBOX_ASTS_DHCP_LEASE_ACQUIRED          0x801F
+#define MBOX_ASTS_ISNS_UNSOLICITED_PDU_RECEIVED 0x8021
+#define ISNS_EVENT_DATA_RECEIVED               0x0000
+#define ISNS_EVENT_CONNECTION_OPENED           0x0001
+#define ISNS_EVENT_CONNECTION_FAILED           0x0002
+#define MBOX_ASTS_IPSEC_SYSTEM_FATAL_ERROR     0x8022
+#define MBOX_ASTS_SUBNET_STATE_CHANGE          0x8027
+
+/*************************************************************************/
+
+/* Host Adapter Initialization Control Block (from host) */
+struct init_fw_ctrl_blk {
+       uint8_t Version;        /* 00 */
+       uint8_t Control;        /* 01 */
+
+       uint16_t FwOptions;     /* 02-03 */
+#define         FWOPT_HEARTBEAT_ENABLE           0x1000
+#define         FWOPT_SESSION_MODE               0x0040
+#define         FWOPT_INITIATOR_MODE             0x0020
+#define         FWOPT_TARGET_MODE                0x0010
+
+       uint16_t ExecThrottle;  /* 04-05 */
+       uint8_t RetryCount;     /* 06 */
+       uint8_t RetryDelay;     /* 07 */
+       uint16_t MaxEthFrPayloadSize;   /* 08-09 */
+       uint16_t AddFwOptions;  /* 0A-0B */
+
+       uint8_t HeartbeatInterval;      /* 0C */
+       uint8_t InstanceNumber; /* 0D */
+       uint16_t RES2;          /* 0E-0F */
+       uint16_t ReqQConsumerIndex;     /* 10-11 */
+       uint16_t ComplQProducerIndex;   /* 12-13 */
+       uint16_t ReqQLen;       /* 14-15 */
+       uint16_t ComplQLen;     /* 16-17 */
+       uint32_t ReqQAddrLo;    /* 18-1B */
+       uint32_t ReqQAddrHi;    /* 1C-1F */
+       uint32_t ComplQAddrLo;  /* 20-23 */
+       uint32_t ComplQAddrHi;  /* 24-27 */
+       uint32_t ShadowRegBufAddrLo;    /* 28-2B */
+       uint32_t ShadowRegBufAddrHi;    /* 2C-2F */
+
+       uint16_t iSCSIOptions;  /* 30-31 */
+
+       uint16_t TCPOptions;    /* 32-33 */
+
+       uint16_t IPOptions;     /* 34-35 */
+
+       uint16_t MaxPDUSize;    /* 36-37 */
+       uint16_t RcvMarkerInt;  /* 38-39 */
+       uint16_t SndMarkerInt;  /* 3A-3B */
+       uint16_t InitMarkerlessInt;     /* 3C-3D */
+       uint16_t FirstBurstSize;        /* 3E-3F */
+       uint16_t DefaultTime2Wait;      /* 40-41 */
+       uint16_t DefaultTime2Retain;    /* 42-43 */
+       uint16_t MaxOutStndngR2T;       /* 44-45 */
+       uint16_t KeepAliveTimeout;      /* 46-47 */
+       uint16_t PortNumber;    /* 48-49 */
+       uint16_t MaxBurstSize;  /* 4A-4B */
+       uint32_t RES4;          /* 4C-4F */
+       uint8_t IPAddr[4];      /* 50-53 */
+       uint8_t RES5[12];       /* 54-5F */
+       uint8_t SubnetMask[4];  /* 60-63 */
+       uint8_t RES6[12];       /* 64-6F */
+       uint8_t GatewayIPAddr[4];       /* 70-73 */
+       uint8_t RES7[12];       /* 74-7F */
+       uint8_t PriDNSIPAddr[4];        /* 80-83 */
+       uint8_t SecDNSIPAddr[4];        /* 84-87 */
+       uint8_t RES8[8];        /* 88-8F */
+       uint8_t Alias[32];      /* 90-AF */
+       uint8_t TargAddr[8];    /* B0-B7 *//* /FIXME: Remove?? */
+       uint8_t CHAPNameSecretsTable[8];        /* B8-BF */
+       uint8_t EthernetMACAddr[6];     /* C0-C5 */
+       uint16_t TargetPortalGroup;     /* C6-C7 */
+       uint8_t SendScale;      /* C8    */
+       uint8_t RecvScale;      /* C9    */
+       uint8_t TypeOfService;  /* CA    */
+       uint8_t Time2Live;      /* CB    */
+       uint16_t VLANPriority;  /* CC-CD */
+       uint16_t Reserved8;     /* CE-CF */
+       uint8_t SecIPAddr[4];   /* D0-D3 */
+       uint8_t Reserved9[12];  /* D4-DF */
+       uint8_t iSNSIPAddr[4];  /* E0-E3 */
+       uint16_t iSNSServerPortNumber;  /* E4-E5 */
+       uint8_t Reserved10[10]; /* E6-EF */
+       uint8_t SLPDAIPAddr[4]; /* F0-F3 */
+       uint8_t Reserved11[12]; /* F4-FF */
+       uint8_t iSCSINameString[256];   /* 100-1FF */
+};
+
+/*************************************************************************/
+
+struct dev_db_entry {
+       uint8_t options;        /* 00 */
+#define DDB_OPT_DISC_SESSION  0x10
+#define DDB_OPT_TARGET       0x02 /* device is a target */
+
+       uint8_t control;        /* 01 */
+
+       uint16_t exeThrottle;   /* 02-03 */
+       uint16_t exeCount;      /* 04-05 */
+       uint8_t retryCount;     /* 06    */
+       uint8_t retryDelay;     /* 07    */
+       uint16_t iSCSIOptions;  /* 08-09 */
+
+       uint16_t TCPOptions;    /* 0A-0B */
+
+       uint16_t IPOptions;     /* 0C-0D */
+
+       uint16_t maxPDUSize;    /* 0E-0F */
+       uint16_t rcvMarkerInt;  /* 10-11 */
+       uint16_t sndMarkerInt;  /* 12-13 */
+       uint16_t iSCSIMaxSndDataSegLen; /* 14-15 */
+       uint16_t firstBurstSize;        /* 16-17 */
+       uint16_t minTime2Wait;  /* 18-19 : RA :default_time2wait */
+       uint16_t maxTime2Retain;        /* 1A-1B */
+       uint16_t maxOutstndngR2T;       /* 1C-1D */
+       uint16_t keepAliveTimeout;      /* 1E-1F */
+       uint8_t ISID[6];        /* 20-25 big-endian, must be converted
+                                * to little-endian */
+       uint16_t TSID;          /* 26-27 */
+       uint16_t portNumber;    /* 28-29 */
+       uint16_t maxBurstSize;  /* 2A-2B */
+       uint16_t taskMngmntTimeout;     /* 2C-2D */
+       uint16_t reserved1;     /* 2E-2F */
+       uint8_t ipAddr[0x10];   /* 30-3F */
+       uint8_t iSCSIAlias[0x20];       /* 40-5F */
+       uint8_t targetAddr[0x20];       /* 60-7F */
+       uint8_t userID[0x20];   /* 80-9F */
+       uint8_t password[0x20]; /* A0-BF */
+       uint8_t iscsiName[0x100];       /* C0-1BF : xxzzy Make this a
+                                        * pointer to a string so we
+                                        * don't have to reserve soooo
+                                        * much RAM */
+       uint16_t ddbLink;       /* 1C0-1C1 */
+       uint16_t CHAPTableIndex; /* 1C2-1C3 */
+       uint16_t TargetPortalGroup; /* 1C4-1C5 */
+       uint16_t reserved2[2];  /* 1C6-1C7 */
+       uint32_t statSN;        /* 1C8-1CB */
+       uint32_t expStatSN;     /* 1CC-1CF */
+       uint16_t reserved3[0x2C]; /* 1D0-1FB */
+       uint16_t ddbValidCookie; /* 1FC-1FD */
+       uint16_t ddbValidSize;  /* 1FE-1FF */
+};
+
+/*************************************************************************/
+
+/* Flash definitions */
+
+#define FLASH_OFFSET_SYS_INFO  0x02000000
+#define FLASH_DEFAULTBLOCKSIZE 0x20000
+#define FLASH_EOF_OFFSET       (FLASH_DEFAULTBLOCKSIZE-8) /* 4 bytes
+                                                           * for EOF
+                                                           * signature */
+
+struct sys_info_phys_addr {
+       uint8_t address[6];     /* 00-05 */
+       uint8_t filler[2];      /* 06-07 */
+};
+
+struct flash_sys_info {
+       uint32_t cookie;        /* 00-03 */
+       uint32_t physAddrCount; /* 04-07 */
+       struct sys_info_phys_addr physAddr[4]; /* 08-27 */
+       uint8_t vendorId[128];  /* 28-A7 */
+       uint8_t productId[128]; /* A8-127 */
+       uint32_t serialNumber;  /* 128-12B */
+
+       /*  PCI Configuration values */
+       uint32_t pciDeviceVendor;       /* 12C-12F */
+       uint32_t pciDeviceId;   /* 130-133 */
+       uint32_t pciSubsysVendor;       /* 134-137 */
+       uint32_t pciSubsysId;   /* 138-13B */
+
+       /*  This validates version 1. */
+       uint32_t crumbs;        /* 13C-13F */
+
+       uint32_t enterpriseNumber;      /* 140-143 */
+
+       uint32_t mtu;           /* 144-147 */
+       uint32_t reserved0;     /* 148-14b */
+       uint32_t crumbs2;       /* 14c-14f */
+       uint8_t acSerialNumber[16];     /* 150-15f */
+       uint32_t crumbs3;       /* 160-16f */
+
+       /* Leave this last in the struct so it is declared invalid if
+        * any new items are added.
+        */
+       uint32_t reserved1[39]; /* 170-1ff */
+};     /* 200 */
+
+struct crash_record {
+       uint16_t fw_major_version;      /* 00 - 01 */
+       uint16_t fw_minor_version;      /* 02 - 03 */
+       uint16_t fw_patch_version;      /* 04 - 05 */
+       uint16_t fw_build_version;      /* 06 - 07 */
+
+       uint8_t build_date[16]; /* 08 - 17 */
+       uint8_t build_time[16]; /* 18 - 27 */
+       uint8_t build_user[16]; /* 28 - 37 */
+       uint8_t card_serial_num[16];    /* 38 - 47 */
+
+       uint32_t time_of_crash_in_secs; /* 48 - 4B */
+       uint32_t time_of_crash_in_ms;   /* 4C - 4F */
+
+       uint16_t out_RISC_sd_num_frames;        /* 50 - 51 */
+       uint16_t OAP_sd_num_words;      /* 52 - 53 */
+       uint16_t IAP_sd_num_frames;     /* 54 - 55 */
+       uint16_t in_RISC_sd_num_words;  /* 56 - 57 */
+
+       uint8_t reserved1[28];  /* 58 - 7F */
+
+       uint8_t out_RISC_reg_dump[256]; /* 80 -17F */
+       uint8_t in_RISC_reg_dump[256];  /*180 -27F */
+       uint8_t in_out_RISC_stack_dump[0];      /*280 - ??? */
+};
+
+struct conn_event_log_entry {
+#define MAX_CONN_EVENT_LOG_ENTRIES     100
+       uint32_t timestamp_sec; /* 00 - 03 seconds since boot */
+       uint32_t timestamp_ms;  /* 04 - 07 milliseconds since boot */
+       uint16_t device_index;  /* 08 - 09  */
+       uint16_t fw_conn_state; /* 0A - 0B  */
+       uint8_t event_type;     /* 0C - 0C  */
+       uint8_t error_code;     /* 0D - 0D  */
+       uint16_t error_code_detail;     /* 0E - 0F  */
+       uint8_t num_consecutive_events; /* 10 - 10  */
+       uint8_t rsvd[3];        /* 11 - 13  */
+};
+
+/*************************************************************************
+ *
+ *                             IOCB Commands Structures and Definitions
+ *
+ *************************************************************************/
+#define IOCB_MAX_CDB_LEN           16  /* Bytes in a CBD */
+#define IOCB_MAX_SENSEDATA_LEN     32  /* Bytes of sense data */
+
+/* IOCB header structure */
+struct qla4_header {
+       uint8_t entryType;
+#define ET_STATUS               0x03
+#define ET_MARKER               0x04
+#define ET_CONT_T1              0x0A
+#define ET_STATUS_CONTINUATION  0x10
+#define ET_CMND_T3              0x19
+#define ET_PASSTHRU0            0x3A
+#define ET_PASSTHRU_STATUS      0x3C
+
+       uint8_t entryStatus;
+       uint8_t systemDefined;
+       uint8_t entryCount;
+
+       /* SyetemDefined definition */
+};
+
+/* Generic queue entry structure*/
+struct queue_entry {
+       uint8_t data[60];
+       uint32_t signature;
+
+};
+
+/* 64 bit addressing segment counts*/
+
+#define COMMAND_SEG_A64          1
+#define CONTINUE_SEG_A64  5
+
+/* 64 bit addressing segment definition*/
+
+struct data_seg_a64 {
+       struct {
+               uint32_t addrLow;
+               uint32_t addrHigh;
+
+       } base;
+
+       uint32_t count;
+
+};
+
+/* Command Type 3 entry structure*/
+
+struct command_t3_entry {
+       struct qla4_header hdr; /* 00-03 */
+
+       uint32_t handle;        /* 04-07 */
+       uint16_t target;        /* 08-09 */
+       uint16_t connection_id; /* 0A-0B */
+
+       uint8_t control_flags;  /* 0C */
+
+       /* data direction  (bits 5-6) */
+#define CF_WRITE               0x20
+#define CF_READ                        0x40
+#define CF_NO_DATA             0x00
+
+       /* task attributes (bits 2-0) */
+#define CF_HEAD_TAG            0x03
+#define CF_ORDERED_TAG         0x02
+#define CF_SIMPLE_TAG          0x01
+
+       /* STATE FLAGS FIELD IS A PLACE HOLDER. THE FW WILL SET BITS
+        * IN THIS FIELD AS THE COMMAND IS PROCESSED. WHEN THE IOCB IS
+        * CHANGED TO AN IOSB THIS FIELD WILL HAVE THE STATE FLAGS SET
+        * PROPERLY.
+        */
+       uint8_t state_flags;    /* 0D */
+       uint8_t cmdRefNum;      /* 0E */
+       uint8_t reserved1;      /* 0F */
+       uint8_t cdb[IOCB_MAX_CDB_LEN];  /* 10-1F */
+       struct scsi_lun lun;    /* FCP LUN (BE). */
+       uint32_t cmdSeqNum;     /* 28-2B */
+       uint16_t timeout;       /* 2C-2D */
+       uint16_t dataSegCnt;    /* 2E-2F */
+       uint32_t ttlByteCnt;    /* 30-33 */
+       struct data_seg_a64 dataseg[COMMAND_SEG_A64];   /* 34-3F */
+
+};
+
+
+/* Continuation Type 1 entry structure*/
+struct continuation_t1_entry {
+       struct qla4_header hdr;
+
+       struct data_seg_a64 dataseg[CONTINUE_SEG_A64];
+
+};
+
+/* Parameterize for 64 or 32 bits */
+#define COMMAND_SEG    COMMAND_SEG_A64
+#define CONTINUE_SEG   CONTINUE_SEG_A64
+
+#define ET_COMMAND     ET_CMND_T3
+#define ET_CONTINUE    ET_CONT_T1
+
+/* Marker entry structure*/
+struct marker_entry {
+       struct qla4_header hdr; /* 00-03 */
+
+       uint32_t system_defined; /* 04-07 */
+       uint16_t target;        /* 08-09 */
+       uint16_t modifier;      /* 0A-0B */
+#define MM_LUN_RESET        0
+
+       uint16_t flags;         /* 0C-0D */
+       uint16_t reserved1;     /* 0E-0F */
+       struct scsi_lun lun;    /* FCP LUN (BE). */
+       uint64_t reserved2;     /* 18-1F */
+       uint64_t reserved3;     /* 20-27 */
+       uint64_t reserved4;     /* 28-2F */
+       uint64_t reserved5;     /* 30-37 */
+       uint64_t reserved6;     /* 38-3F */
+};
+
+/* Status entry structure*/
+struct status_entry {
+       struct qla4_header hdr; /* 00-03 */
+
+       uint32_t handle;        /* 04-07 */
+
+       uint8_t scsiStatus;     /* 08 */
+#define SCSI_CHECK_CONDITION             0x02
+
+       uint8_t iscsiFlags;     /* 09 */
+#define ISCSI_FLAG_RESIDUAL_UNDER        0x02
+#define ISCSI_FLAG_RESIDUAL_OVER         0x04
+
+       uint8_t iscsiResponse;  /* 0A */
+
+       uint8_t completionStatus;       /* 0B */
+#define SCS_COMPLETE                     0x00
+#define SCS_INCOMPLETE                   0x01
+#define SCS_RESET_OCCURRED               0x04
+#define SCS_ABORTED                      0x05
+#define SCS_TIMEOUT                      0x06
+#define SCS_DATA_OVERRUN                 0x07
+#define SCS_DATA_UNDERRUN                0x15
+#define SCS_QUEUE_FULL                   0x1C
+#define SCS_DEVICE_UNAVAILABLE           0x28
+#define SCS_DEVICE_LOGGED_OUT            0x29
+
+       uint8_t reserved1;      /* 0C */
+
+       /* state_flags MUST be at the same location as state_flags in
+        * the Command_T3/4_Entry */
+       uint8_t state_flags;    /* 0D */
+
+       uint16_t senseDataByteCnt;      /* 0E-0F */
+       uint32_t residualByteCnt;       /* 10-13 */
+       uint32_t bidiResidualByteCnt;   /* 14-17 */
+       uint32_t expSeqNum;     /* 18-1B */
+       uint32_t maxCmdSeqNum;  /* 1C-1F */
+       uint8_t senseData[IOCB_MAX_SENSEDATA_LEN];      /* 20-3F */
+
+};
+
+struct passthru0 {
+       struct qla4_header hdr;                /* 00-03 */
+       uint32_t handle;        /* 04-07 */
+       uint16_t target;        /* 08-09 */
+       uint16_t connectionID;  /* 0A-0B */
+#define ISNS_DEFAULT_SERVER_CONN_ID    ((uint16_t)0x8000)
+
+       uint16_t controlFlags;  /* 0C-0D */
+#define PT_FLAG_ETHERNET_FRAME         0x8000
+#define PT_FLAG_ISNS_PDU               0x8000
+#define PT_FLAG_SEND_BUFFER            0x0200
+#define PT_FLAG_WAIT_4_RESPONSE                0x0100
+
+       uint16_t timeout;       /* 0E-0F */
+#define PT_DEFAULT_TIMEOUT             30 /* seconds */
+
+       struct data_seg_a64 outDataSeg64;       /* 10-1B */
+       uint32_t res1;          /* 1C-1F */
+       struct data_seg_a64 inDataSeg64;        /* 20-2B */
+       uint8_t res2[20];       /* 2C-3F */
+};
+
+struct passthru_status {
+       struct qla4_header hdr;                /* 00-03 */
+       uint32_t handle;        /* 04-07 */
+       uint16_t target;        /* 08-09 */
+       uint16_t connectionID;  /* 0A-0B */
+
+       uint8_t completionStatus;       /* 0C */
+#define PASSTHRU_STATUS_COMPLETE               0x01
+
+       uint8_t residualFlags;  /* 0D */
+
+       uint16_t timeout;       /* 0E-0F */
+       uint16_t portNumber;    /* 10-11 */
+       uint8_t res1[10];       /* 12-1B */
+       uint32_t outResidual;   /* 1C-1F */
+       uint8_t res2[12];       /* 20-2B */
+       uint32_t inResidual;    /* 2C-2F */
+       uint8_t res4[16];       /* 30-3F */
+};
+
+#endif /*  _QLA4X_FW_H */
diff --git a/drivers/scsi/qla4xxx/ql4_glbl.h b/drivers/scsi/qla4xxx/ql4_glbl.h
new file mode 100644 (file)
index 0000000..418fb7a
--- /dev/null
@@ -0,0 +1,78 @@
+/*
+ * QLogic iSCSI HBA Driver
+ * Copyright (c)  2003-2006 QLogic Corporation
+ *
+ * See LICENSE.qla4xxx for copyright and licensing details.
+ */
+
+#ifndef __QLA4x_GBL_H
+#define        __QLA4x_GBL_H
+
+int qla4xxx_send_tgts(struct scsi_qla_host *ha, char *ip, uint16_t port);
+int qla4xxx_send_command_to_isp(struct scsi_qla_host *ha, struct srb * srb);
+int qla4xxx_initialize_adapter(struct scsi_qla_host * ha,
+                              uint8_t renew_ddb_list);
+int qla4xxx_soft_reset(struct scsi_qla_host *ha);
+irqreturn_t qla4xxx_intr_handler(int irq, void *dev_id, struct pt_regs *regs);
+
+void qla4xxx_free_ddb_list(struct scsi_qla_host * ha);
+void qla4xxx_process_aen(struct scsi_qla_host * ha, uint8_t process_aen);
+
+int qla4xxx_get_dhcp_ip_address(struct scsi_qla_host * ha);
+int qla4xxx_relogin_device(struct scsi_qla_host * ha,
+                          struct ddb_entry * ddb_entry);
+int qla4xxx_reset_lun(struct scsi_qla_host * ha, struct ddb_entry * ddb_entry,
+                     int lun);
+int qla4xxx_get_flash(struct scsi_qla_host * ha, dma_addr_t dma_addr,
+                     uint32_t offset, uint32_t len);
+int qla4xxx_get_firmware_status(struct scsi_qla_host * ha);
+int qla4xxx_get_firmware_state(struct scsi_qla_host * ha);
+int qla4xxx_initialize_fw_cb(struct scsi_qla_host * ha);
+
+/* FIXME: Goodness!  this really wants a small struct to hold the
+ * parameters. On x86 the args will get passed on the stack! */
+int qla4xxx_get_fwddb_entry(struct scsi_qla_host *ha,
+                           uint16_t fw_ddb_index,
+                           struct dev_db_entry *fw_ddb_entry,
+                           dma_addr_t fw_ddb_entry_dma,
+                           uint32_t *num_valid_ddb_entries,
+                           uint32_t *next_ddb_index,
+                           uint32_t *fw_ddb_device_state,
+                           uint32_t *conn_err_detail,
+                           uint16_t *tcp_source_port_num,
+                           uint16_t *connection_id);
+
+struct ddb_entry * qla4xxx_alloc_ddb(struct scsi_qla_host * ha,
+                                    uint32_t fw_ddb_index);
+int qla4xxx_set_ddb_entry(struct scsi_qla_host * ha, uint16_t fw_ddb_index,
+                         dma_addr_t fw_ddb_entry_dma);
+
+void qla4xxx_mark_device_missing(struct scsi_qla_host *ha,
+                                struct ddb_entry *ddb_entry);
+u16 rd_nvram_word(struct scsi_qla_host * ha, int offset);
+void qla4xxx_get_crash_record(struct scsi_qla_host * ha);
+struct ddb_entry *qla4xxx_alloc_sess(struct scsi_qla_host *ha);
+int qla4xxx_add_sess(struct ddb_entry *);
+void qla4xxx_destroy_sess(struct ddb_entry *ddb_entry);
+int qla4xxx_conn_close_sess_logout(struct scsi_qla_host * ha,
+                                  uint16_t fw_ddb_index,
+                                  uint16_t connection_id,
+                                  uint16_t option);
+int qla4xxx_clear_database_entry(struct scsi_qla_host * ha,
+                                uint16_t fw_ddb_index);
+int qla4xxx_is_nvram_configuration_valid(struct scsi_qla_host * ha);
+int qla4xxx_get_fw_version(struct scsi_qla_host * ha);
+void qla4xxx_interrupt_service_routine(struct scsi_qla_host * ha,
+                                      uint32_t intr_status);
+int qla4xxx_init_rings(struct scsi_qla_host * ha);
+void qla4xxx_dump_buffer(void *b, uint32_t size);
+struct srb * qla4xxx_del_from_active_array(struct scsi_qla_host *ha, uint32_t index);
+void qla4xxx_srb_compl(struct scsi_qla_host *ha, struct srb *srb);
+int qla4xxx_reinitialize_ddb_list(struct scsi_qla_host * ha);
+int qla4xxx_process_ddb_changed(struct scsi_qla_host * ha,
+                               uint32_t fw_ddb_index, uint32_t state);
+
+extern int extended_error_logging;
+extern int ql4xdiscoverywait;
+extern int ql4xdontresethba;
+#endif                         /* _QLA4x_GBL_H */
diff --git a/drivers/scsi/qla4xxx/ql4_init.c b/drivers/scsi/qla4xxx/ql4_init.c
new file mode 100644 (file)
index 0000000..bb3a1c1
--- /dev/null
@@ -0,0 +1,1340 @@
+/*
+ * QLogic iSCSI HBA Driver
+ * Copyright (c)  2003-2006 QLogic Corporation
+ *
+ * See LICENSE.qla4xxx for copyright and licensing details.
+ */
+
+#include "ql4_def.h"
+
+/*
+ * QLogic ISP4xxx Hardware Support Function Prototypes.
+ */
+
+static void ql4xxx_set_mac_number(struct scsi_qla_host *ha)
+{
+       uint32_t value;
+       uint8_t func_number;
+       unsigned long flags;
+
+       /* Get the function number */
+       spin_lock_irqsave(&ha->hardware_lock, flags);
+       value = readw(&ha->reg->ctrl_status);
+       spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+       func_number = (uint8_t) ((value >> 4) & 0x30);
+       switch (value & ISP_CONTROL_FN_MASK) {
+       case ISP_CONTROL_FN0_SCSI:
+               ha->mac_index = 1;
+               break;
+       case ISP_CONTROL_FN1_SCSI:
+               ha->mac_index = 3;
+               break;
+       default:
+               DEBUG2(printk("scsi%ld: %s: Invalid function number, "
+                             "ispControlStatus = 0x%x\n", ha->host_no,
+                             __func__, value));
+               break;
+       }
+       DEBUG2(printk("scsi%ld: %s: mac_index %d.\n", ha->host_no, __func__,
+                     ha->mac_index));
+}
+
+/**
+ * qla4xxx_free_ddb - deallocate ddb
+ * @ha: pointer to host adapter structure.
+ * @ddb_entry: pointer to device database entry
+ *
+ * This routine deallocates and unlinks the specified ddb_entry from the
+ * adapter's
+ **/
+void qla4xxx_free_ddb(struct scsi_qla_host *ha, struct ddb_entry *ddb_entry)
+{
+       /* Remove device entry from list */
+       list_del_init(&ddb_entry->list);
+
+       /* Remove device pointer from index mapping arrays */
+       ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] =
+               (struct ddb_entry *) INVALID_ENTRY;
+       ha->tot_ddbs--;
+
+       /* Free memory and scsi-ml struct for device entry */
+       qla4xxx_destroy_sess(ddb_entry);
+}
+
+/**
+ * qla4xxx_free_ddb_list - deallocate all ddbs
+ * @ha: pointer to host adapter structure.
+ *
+ * This routine deallocates and removes all devices on the sppecified adapter.
+ **/
+void qla4xxx_free_ddb_list(struct scsi_qla_host *ha)
+{
+       struct list_head *ptr;
+       struct ddb_entry *ddb_entry;
+
+       while (!list_empty(&ha->ddb_list)) {
+               ptr = ha->ddb_list.next;
+               /* Free memory for device entry and remove */
+               ddb_entry = list_entry(ptr, struct ddb_entry, list);
+               qla4xxx_free_ddb(ha, ddb_entry);
+       }
+}
+
+/**
+ * qla4xxx_init_rings - initialize hw queues
+ * @ha: pointer to host adapter structure.
+ *
+ * This routine initializes the internal queues for the specified adapter.
+ * The QLA4010 requires us to restart the queues at index 0.
+ * The QLA4000 doesn't care, so just default to QLA4010's requirement.
+ **/
+int qla4xxx_init_rings(struct scsi_qla_host *ha)
+{
+       unsigned long flags = 0;
+
+       /* Initialize request queue. */
+       spin_lock_irqsave(&ha->hardware_lock, flags);
+       ha->request_out = 0;
+       ha->request_in = 0;
+       ha->request_ptr = &ha->request_ring[ha->request_in];
+       ha->req_q_count = REQUEST_QUEUE_DEPTH;
+
+       /* Initialize response queue. */
+       ha->response_in = 0;
+       ha->response_out = 0;
+       ha->response_ptr = &ha->response_ring[ha->response_out];
+
+       /*
+        * Initialize DMA Shadow registers.  The firmware is really supposed to
+        * take care of this, but on some uniprocessor systems, the shadow
+        * registers aren't cleared-- causing the interrupt_handler to think
+        * there are responses to be processed when there aren't.
+        */
+       ha->shadow_regs->req_q_out = __constant_cpu_to_le32(0);
+       ha->shadow_regs->rsp_q_in = __constant_cpu_to_le32(0);
+       wmb();
+
+       writel(0, &ha->reg->req_q_in);
+       writel(0, &ha->reg->rsp_q_out);
+       readl(&ha->reg->rsp_q_out);
+
+       spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+       return QLA_SUCCESS;
+}
+
+/**
+ * qla4xxx_validate_mac_address - validate adapter MAC address(es)
+ * @ha: pointer to host adapter structure.
+ *
+ **/
+static int qla4xxx_validate_mac_address(struct scsi_qla_host *ha)
+{
+       struct flash_sys_info *sys_info;
+       dma_addr_t sys_info_dma;
+       int status = QLA_ERROR;
+
+       sys_info = dma_alloc_coherent(&ha->pdev->dev, sizeof(*sys_info),
+                                     &sys_info_dma, GFP_KERNEL);
+       if (sys_info == NULL) {
+               DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
+                             ha->host_no, __func__));
+
+               goto exit_validate_mac_no_free;
+       }
+       memset(sys_info, 0, sizeof(*sys_info));
+
+       /* Get flash sys info */
+       if (qla4xxx_get_flash(ha, sys_info_dma, FLASH_OFFSET_SYS_INFO,
+                             sizeof(*sys_info)) != QLA_SUCCESS) {
+               DEBUG2(printk("scsi%ld: %s: get_flash FLASH_OFFSET_SYS_INFO "
+                             "failed\n", ha->host_no, __func__));
+
+               goto exit_validate_mac;
+       }
+
+       /* Save M.A.C. address & serial_number */
+       memcpy(ha->my_mac, &sys_info->physAddr[0].address[0],
+              min(sizeof(ha->my_mac),
+                  sizeof(sys_info->physAddr[0].address)));
+       memcpy(ha->serial_number, &sys_info->acSerialNumber,
+              min(sizeof(ha->serial_number),
+                  sizeof(sys_info->acSerialNumber)));
+
+       status = QLA_SUCCESS;
+
+ exit_validate_mac:
+       dma_free_coherent(&ha->pdev->dev, sizeof(*sys_info), sys_info,
+                         sys_info_dma);
+
+ exit_validate_mac_no_free:
+       return status;
+}
+
+/**
+ * qla4xxx_init_local_data - initialize adapter specific local data
+ * @ha: pointer to host adapter structure.
+ *
+ **/
+static int qla4xxx_init_local_data(struct scsi_qla_host *ha)
+{
+       /* Initilize aen queue */
+       ha->aen_q_count = MAX_AEN_ENTRIES;
+
+       return qla4xxx_get_firmware_status(ha);
+}
+
+static int qla4xxx_fw_ready(struct scsi_qla_host *ha)
+{
+       uint32_t timeout_count;
+       int ready = 0;
+
+       DEBUG2(dev_info(&ha->pdev->dev, "Waiting for Firmware Ready..\n"));
+       for (timeout_count = ADAPTER_INIT_TOV; timeout_count > 0;
+            timeout_count--) {
+               if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
+                       qla4xxx_get_dhcp_ip_address(ha);
+
+               /* Get firmware state. */
+               if (qla4xxx_get_firmware_state(ha) != QLA_SUCCESS) {
+                       DEBUG2(printk("scsi%ld: %s: unable to get firmware "
+                                     "state\n", ha->host_no, __func__));
+                       break;
+
+               }
+
+               if (ha->firmware_state & FW_STATE_ERROR) {
+                       DEBUG2(printk("scsi%ld: %s: an unrecoverable error has"
+                                     " occurred\n", ha->host_no, __func__));
+                       break;
+
+               }
+               if (ha->firmware_state & FW_STATE_CONFIG_WAIT) {
+                       /*
+                        * The firmware has not yet been issued an Initialize
+                        * Firmware command, so issue it now.
+                        */
+                       if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR)
+                               break;
+
+                       /* Go back and test for ready state - no wait. */
+                       continue;
+               }
+
+               if (ha->firmware_state == FW_STATE_READY) {
+                       DEBUG2(dev_info(&ha->pdev->dev, "Firmware Ready..\n"));
+                       /* The firmware is ready to process SCSI commands. */
+                       DEBUG2(dev_info(&ha->pdev->dev,
+                                         "scsi%ld: %s: MEDIA TYPE - %s\n",
+                                         ha->host_no,
+                                         __func__, (ha->addl_fw_state &
+                                                    FW_ADDSTATE_OPTICAL_MEDIA)
+                                         != 0 ? "OPTICAL" : "COPPER"));
+                       DEBUG2(dev_info(&ha->pdev->dev,
+                                         "scsi%ld: %s: DHCP STATE Enabled "
+                                         "%s\n",
+                                         ha->host_no, __func__,
+                                         (ha->addl_fw_state &
+                                          FW_ADDSTATE_DHCP_ENABLED) != 0 ?
+                                         "YES" : "NO"));
+                       DEBUG2(dev_info(&ha->pdev->dev,
+                                         "scsi%ld: %s: LINK %s\n",
+                                         ha->host_no, __func__,
+                                         (ha->addl_fw_state &
+                                          FW_ADDSTATE_LINK_UP) != 0 ?
+                                         "UP" : "DOWN"));
+                       DEBUG2(dev_info(&ha->pdev->dev,
+                                         "scsi%ld: %s: iSNS Service "
+                                         "Started %s\n",
+                                         ha->host_no, __func__,
+                                         (ha->addl_fw_state &
+                                          FW_ADDSTATE_ISNS_SVC_ENABLED) != 0 ?
+                                         "YES" : "NO"));
+
+                       ready = 1;
+                       break;
+               }
+               DEBUG2(printk("scsi%ld: %s: waiting on fw, state=%x:%x - "
+                             "seconds expired= %d\n", ha->host_no, __func__,
+                             ha->firmware_state, ha->addl_fw_state,
+                             timeout_count));
+               msleep(1000);
+       }                       /* end of for */
+
+       if (timeout_count <= 0)
+               DEBUG2(printk("scsi%ld: %s: FW Initialization timed out!\n",
+                             ha->host_no, __func__));
+
+       if (ha->firmware_state & FW_STATE_DHCP_IN_PROGRESS)  {
+               DEBUG2(printk("scsi%ld: %s: FW is reporting its waiting to"
+                             " grab an IP address from DHCP server\n",
+                             ha->host_no, __func__));
+               ready = 1;
+       }
+
+       return ready;
+}
+
+/**
+ * qla4xxx_init_firmware - initializes the firmware.
+ * @ha: pointer to host adapter structure.
+ *
+ **/
+static int qla4xxx_init_firmware(struct scsi_qla_host *ha)
+{
+       int status = QLA_ERROR;
+
+       dev_info(&ha->pdev->dev, "Initializing firmware..\n");
+       if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR) {
+               DEBUG2(printk("scsi%ld: %s: Failed to initialize firmware "
+                             "control block\n", ha->host_no, __func__));
+               return status;
+       }
+       if (!qla4xxx_fw_ready(ha))
+               return status;
+
+       set_bit(AF_ONLINE, &ha->flags);
+       return qla4xxx_get_firmware_status(ha);
+}
+
+static struct ddb_entry* qla4xxx_get_ddb_entry(struct scsi_qla_host *ha,
+                                              uint32_t fw_ddb_index)
+{
+       struct dev_db_entry *fw_ddb_entry = NULL;
+       dma_addr_t fw_ddb_entry_dma;
+       struct ddb_entry *ddb_entry = NULL;
+       int found = 0;
+       uint32_t device_state;
+
+       /* Make sure the dma buffer is valid */
+       fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
+                                         sizeof(*fw_ddb_entry),
+                                         &fw_ddb_entry_dma, GFP_KERNEL);
+       if (fw_ddb_entry == NULL) {
+               DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
+                             ha->host_no, __func__));
+               return NULL;
+       }
+
+       if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry,
+                                   fw_ddb_entry_dma, NULL, NULL,
+                                   &device_state, NULL, NULL, NULL) ==
+           QLA_ERROR) {
+               DEBUG2(printk("scsi%ld: %s: failed get_ddb_entry for "
+                             "fw_ddb_index %d\n", ha->host_no, __func__,
+                             fw_ddb_index));
+               return NULL;
+       }
+
+       /* Allocate DDB if not already allocated. */
+       DEBUG2(printk("scsi%ld: %s: Looking for ddb[%d]\n", ha->host_no,
+                     __func__, fw_ddb_index));
+       list_for_each_entry(ddb_entry, &ha->ddb_list, list) {
+               if (memcmp(ddb_entry->iscsi_name, fw_ddb_entry->iscsiName,
+                          ISCSI_NAME_SIZE) == 0) {
+                       found++;
+                       break;
+               }
+       }
+
+       if (!found) {
+               DEBUG2(printk("scsi%ld: %s: ddb[%d] not found - allocating "
+                             "new ddb\n", ha->host_no, __func__,
+                             fw_ddb_index));
+               ddb_entry = qla4xxx_alloc_ddb(ha, fw_ddb_index);
+       }
+
+       /* if not found allocate new ddb */
+       dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
+                         fw_ddb_entry_dma);
+
+       return ddb_entry;
+}
+
+/**
+ * qla4xxx_update_ddb_entry - update driver's internal ddb
+ * @ha: pointer to host adapter structure.
+ * @ddb_entry: pointer to device database structure to be filled
+ * @fw_ddb_index: index of the ddb entry in fw ddb table
+ *
+ * This routine updates the driver's internal device database entry
+ * with information retrieved from the firmware's device database
+ * entry for the specified device. The ddb_entry->fw_ddb_index field
+ * must be initialized prior to        calling this routine
+ *
+ **/
+int qla4xxx_update_ddb_entry(struct scsi_qla_host *ha,
+                            struct ddb_entry *ddb_entry,
+                            uint32_t fw_ddb_index)
+{
+       struct dev_db_entry *fw_ddb_entry = NULL;
+       dma_addr_t fw_ddb_entry_dma;
+       int status = QLA_ERROR;
+
+       if (ddb_entry == NULL) {
+               DEBUG2(printk("scsi%ld: %s: ddb_entry is NULL\n", ha->host_no,
+                             __func__));
+               goto exit_update_ddb;
+       }
+
+       /* Make sure the dma buffer is valid */
+       fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
+                                         sizeof(*fw_ddb_entry),
+                                         &fw_ddb_entry_dma, GFP_KERNEL);
+       if (fw_ddb_entry == NULL) {
+               DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
+                             ha->host_no, __func__));
+
+               goto exit_update_ddb;
+       }
+
+       if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry,
+                                   fw_ddb_entry_dma, NULL, NULL,
+                                   &ddb_entry->fw_ddb_device_state, NULL,
+                                   &ddb_entry->tcp_source_port_num,
+                                   &ddb_entry->connection_id) ==
+           QLA_ERROR) {
+               DEBUG2(printk("scsi%ld: %s: failed get_ddb_entry for "
+                             "fw_ddb_index %d\n", ha->host_no, __func__,
+                             fw_ddb_index));
+
+               goto exit_update_ddb;
+       }
+
+       status = QLA_SUCCESS;
+       ddb_entry->target_session_id = le16_to_cpu(fw_ddb_entry->TSID);
+       ddb_entry->task_mgmt_timeout =
+               le16_to_cpu(fw_ddb_entry->taskMngmntTimeout);
+       ddb_entry->CmdSn = 0;
+       ddb_entry->exe_throttle = le16_to_cpu(fw_ddb_entry->exeThrottle);
+       ddb_entry->default_relogin_timeout =
+               le16_to_cpu(fw_ddb_entry->taskMngmntTimeout);
+       ddb_entry->default_time2wait = le16_to_cpu(fw_ddb_entry->minTime2Wait);
+
+       /* Update index in case it changed */
+       ddb_entry->fw_ddb_index = fw_ddb_index;
+       ha->fw_ddb_index_map[fw_ddb_index] = ddb_entry;
+
+       ddb_entry->port = le16_to_cpu(fw_ddb_entry->portNumber);
+       ddb_entry->tpgt = le32_to_cpu(fw_ddb_entry->TargetPortalGroup);
+       memcpy(&ddb_entry->iscsi_name[0], &fw_ddb_entry->iscsiName[0],
+              min(sizeof(ddb_entry->iscsi_name),
+                  sizeof(fw_ddb_entry->iscsiName)));
+       memcpy(&ddb_entry->ip_addr[0], &fw_ddb_entry->ipAddr[0],
+              min(sizeof(ddb_entry->ip_addr), sizeof(fw_ddb_entry->ipAddr)));
+
+       DEBUG2(printk("scsi%ld: %s: ddb[%d] - State= %x status= %d.\n",
+                     ha->host_no, __func__, fw_ddb_index,
+                     ddb_entry->fw_ddb_device_state, status));
+
+ exit_update_ddb:
+       if (fw_ddb_entry)
+               dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
+                                 fw_ddb_entry, fw_ddb_entry_dma);
+
+       return status;
+}
+
+/**
+ * qla4xxx_alloc_ddb - allocate device database entry
+ * @ha: Pointer to host adapter structure.
+ * @fw_ddb_index: Firmware's device database index
+ *
+ * This routine allocates a ddb_entry, ititializes some values, and
+ * inserts it into the ddb list.
+ **/
+struct ddb_entry * qla4xxx_alloc_ddb(struct scsi_qla_host *ha,
+                                    uint32_t fw_ddb_index)
+{
+       struct ddb_entry *ddb_entry;
+
+       DEBUG2(printk("scsi%ld: %s: fw_ddb_index [%d]\n", ha->host_no,
+                     __func__, fw_ddb_index));
+
+       ddb_entry = qla4xxx_alloc_sess(ha);
+       if (ddb_entry == NULL) {
+               DEBUG2(printk("scsi%ld: %s: Unable to allocate memory "
+                             "to add fw_ddb_index [%d]\n",
+                             ha->host_no, __func__, fw_ddb_index));
+               return ddb_entry;
+       }
+
+       ddb_entry->fw_ddb_index = fw_ddb_index;
+       atomic_set(&ddb_entry->port_down_timer, ha->port_down_retry_count);
+       atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
+       atomic_set(&ddb_entry->relogin_timer, 0);
+       atomic_set(&ddb_entry->relogin_retry_count, 0);
+       atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
+       list_add_tail(&ddb_entry->list, &ha->ddb_list);
+       ha->fw_ddb_index_map[fw_ddb_index] = ddb_entry;
+       ha->tot_ddbs++;
+
+       return ddb_entry;
+}
+
+/**
+ * qla4xxx_configure_ddbs - builds driver ddb list
+ * @ha: Pointer to host adapter structure.
+ *
+ * This routine searches for all valid firmware ddb entries and builds
+ * an internal ddb list. Ddbs that are considered valid are those with
+ * a device state of SESSION_ACTIVE.
+ **/
+static int qla4xxx_build_ddb_list(struct scsi_qla_host *ha)
+{
+       int status = QLA_SUCCESS;
+       uint32_t fw_ddb_index = 0;
+       uint32_t next_fw_ddb_index = 0;
+       uint32_t ddb_state;
+       uint32_t conn_err, err_code;
+       struct ddb_entry *ddb_entry;
+
+       dev_info(&ha->pdev->dev, "Initializing DDBs ...\n");
+       for (fw_ddb_index = 0; fw_ddb_index < MAX_DDB_ENTRIES;
+            fw_ddb_index = next_fw_ddb_index) {
+               /* First, let's see if a device exists here */
+               if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, NULL, 0, NULL,
+                                           &next_fw_ddb_index, &ddb_state,
+                                           &conn_err, NULL, NULL) ==
+                   QLA_ERROR) {
+                       DEBUG2(printk("scsi%ld: %s: get_ddb_entry, "
+                                     "fw_ddb_index %d failed", ha->host_no,
+                                     __func__, fw_ddb_index));
+                       return QLA_ERROR;
+               }
+
+               DEBUG2(printk("scsi%ld: %s: Getting DDB[%d] ddbstate=0x%x, "
+                             "next_fw_ddb_index=%d.\n", ha->host_no, __func__,
+                             fw_ddb_index, ddb_state, next_fw_ddb_index));
+
+               /* Issue relogin, if necessary. */
+               if (ddb_state == DDB_DS_SESSION_FAILED ||
+                   ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) {
+                       /* Try and login to device */
+                       DEBUG2(printk("scsi%ld: %s: Login to DDB[%d]\n",
+                                     ha->host_no, __func__, fw_ddb_index));
+                       err_code = ((conn_err & 0x00ff0000) >> 16);
+                       if (err_code == 0x1c || err_code == 0x06) {
+                               DEBUG2(printk("scsi%ld: %s send target "
+                                             "completed "
+                                             "or access denied failure\n",
+                                             ha->host_no, __func__));
+                       } else
+                               qla4xxx_set_ddb_entry(ha, fw_ddb_index, 0);
+               }
+
+               if (ddb_state != DDB_DS_SESSION_ACTIVE)
+                       goto next_one;
+               /*
+                * if fw_ddb with session active state found,
+                * add to ddb_list
+                */
+               DEBUG2(printk("scsi%ld: %s: DDB[%d] added to list\n",
+                             ha->host_no, __func__, fw_ddb_index));
+
+               /* Add DDB to internal our ddb list. */
+               ddb_entry = qla4xxx_get_ddb_entry(ha, fw_ddb_index);
+               if (ddb_entry == NULL) {
+                       DEBUG2(printk("scsi%ld: %s: Unable to allocate memory "
+                                     "for device at fw_ddb_index %d\n",
+                                     ha->host_no, __func__, fw_ddb_index));
+                       return QLA_ERROR;
+               }
+               /* Fill in the device structure */
+               if (qla4xxx_update_ddb_entry(ha, ddb_entry, fw_ddb_index) ==
+                   QLA_ERROR) {
+                       ha->fw_ddb_index_map[fw_ddb_index] =
+                               (struct ddb_entry *)INVALID_ENTRY;
+
+
+                       DEBUG2(printk("scsi%ld: %s: update_ddb_entry failed "
+                                     "for fw_ddb_index %d.\n",
+                                     ha->host_no, __func__, fw_ddb_index));
+                       return QLA_ERROR;
+               }
+
+next_one:
+               /* We know we've reached the last device when
+                * next_fw_ddb_index is 0 */
+               if (next_fw_ddb_index == 0)
+                       break;
+       }
+
+       dev_info(&ha->pdev->dev, "DDB list done..\n");
+
+       return status;
+}
+
+struct qla4_relog_scan {
+       int halt_wait;
+       uint32_t conn_err;
+       uint32_t err_code;
+       uint32_t fw_ddb_index;
+       uint32_t next_fw_ddb_index;
+       uint32_t fw_ddb_device_state;
+};
+
+static int qla4_test_rdy(struct scsi_qla_host *ha, struct qla4_relog_scan *rs)
+{
+       struct ddb_entry *ddb_entry;
+
+       /*
+        * Don't want to do a relogin if connection
+        * error is 0x1c.
+        */
+       rs->err_code = ((rs->conn_err & 0x00ff0000) >> 16);
+       if (rs->err_code == 0x1c || rs->err_code == 0x06) {
+               DEBUG2(printk(
+                              "scsi%ld: %s send target"
+                              " completed or "
+                              "access denied failure\n",
+                              ha->host_no, __func__));
+       } else {
+               /* We either have a device that is in
+                * the process of relogging in or a
+                * device that is waiting to be
+                * relogged in */
+               rs->halt_wait = 0;
+
+               ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha,
+                                                          rs->fw_ddb_index);
+               if (ddb_entry == NULL)
+                       return QLA_ERROR;
+
+               if (ddb_entry->dev_scan_wait_to_start_relogin != 0
+                   && time_after_eq(jiffies,
+                                    ddb_entry->
+                                    dev_scan_wait_to_start_relogin))
+               {
+                       ddb_entry->dev_scan_wait_to_start_relogin = 0;
+                       qla4xxx_set_ddb_entry(ha, rs->fw_ddb_index, 0);
+               }
+       }
+       return QLA_SUCCESS;
+}
+
+static int qla4_scan_for_relogin(struct scsi_qla_host *ha,
+                                struct qla4_relog_scan *rs)
+{
+       int error;
+
+       /* scan for relogins
+        * ----------------- */
+       for (rs->fw_ddb_index = 0; rs->fw_ddb_index < MAX_DDB_ENTRIES;
+            rs->fw_ddb_index = rs->next_fw_ddb_index) {
+               if (qla4xxx_get_fwddb_entry(ha, rs->fw_ddb_index, NULL, 0,
+                                           NULL, &rs->next_fw_ddb_index,
+                                           &rs->fw_ddb_device_state,
+                                           &rs->conn_err, NULL, NULL)
+                   == QLA_ERROR)
+                       return QLA_ERROR;
+
+               if (rs->fw_ddb_device_state == DDB_DS_LOGIN_IN_PROCESS)
+                       rs->halt_wait = 0;
+
+               if (rs->fw_ddb_device_state == DDB_DS_SESSION_FAILED ||
+                   rs->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE) {
+                       error = qla4_test_rdy(ha, rs);
+                       if (error)
+                               return error;
+               }
+
+               /* We know we've reached the last device when
+                * next_fw_ddb_index is 0 */
+               if (rs->next_fw_ddb_index == 0)
+                       break;
+       }
+       return QLA_SUCCESS;
+}
+
+/**
+ * qla4xxx_devices_ready - wait for target devices to be logged in
+ * @ha: pointer to adapter structure
+ *
+ * This routine waits up to ql4xdiscoverywait seconds
+ * F/W database during driver load time.
+ **/
+static int qla4xxx_devices_ready(struct scsi_qla_host *ha)
+{
+       int error;
+       unsigned long discovery_wtime;
+       struct qla4_relog_scan rs;
+
+       discovery_wtime = jiffies + (ql4xdiscoverywait * HZ);
+
+       DEBUG(printk("Waiting (%d) for devices ...\n", ql4xdiscoverywait));
+       do {
+               /* poll for AEN. */
+               qla4xxx_get_firmware_state(ha);
+               if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags)) {
+                       /* Set time-between-relogin timer */
+                       qla4xxx_process_aen(ha, RELOGIN_DDB_CHANGED_AENS);
+               }
+
+               /* if no relogins active or needed, halt discvery wait */
+               rs.halt_wait = 1;
+
+               error = qla4_scan_for_relogin(ha, &rs);
+
+               if (rs.halt_wait) {
+                       DEBUG2(printk("scsi%ld: %s: Delay halted.  Devices "
+                                     "Ready.\n", ha->host_no, __func__));
+                       return QLA_SUCCESS;
+               }
+
+               msleep(2000);
+       } while (!time_after_eq(jiffies, discovery_wtime));
+
+       DEBUG3(qla4xxx_get_conn_event_log(ha));
+
+       return QLA_SUCCESS;
+}
+
+static void qla4xxx_flush_AENS(struct scsi_qla_host *ha)
+{
+       unsigned long wtime;
+
+       /* Flush the 0x8014 AEN from the firmware as a result of
+        * Auto connect. We are basically doing get_firmware_ddb()
+        * to determine whether we need to log back in or not.
+        *  Trying to do a set ddb before we have processed 0x8014
+        *  will result in another set_ddb() for the same ddb. In other
+        *  words there will be stale entries in the aen_q.
+        */
+       wtime = jiffies + (2 * HZ);
+       do {
+               if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS)
+                       if (ha->firmware_state & (BIT_2 | BIT_0))
+                               return;
+
+               if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
+                       qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
+
+               msleep(1000);
+       } while (!time_after_eq(jiffies, wtime));
+
+}
+
+static int qla4xxx_initialize_ddb_list(struct scsi_qla_host *ha)
+{
+       uint16_t fw_ddb_index;
+       int status = QLA_SUCCESS;
+
+       /* free the ddb list if is not empty */
+       if (!list_empty(&ha->ddb_list))
+               qla4xxx_free_ddb_list(ha);
+
+       for (fw_ddb_index = 0; fw_ddb_index < MAX_DDB_ENTRIES; fw_ddb_index++)
+               ha->fw_ddb_index_map[fw_ddb_index] =
+                       (struct ddb_entry *)INVALID_ENTRY;
+
+       ha->tot_ddbs = 0;
+
+       qla4xxx_flush_AENS(ha);
+
+       /*
+        * First perform device discovery for active
+        * fw ddb indexes and build
+        * ddb list.
+        */
+       if ((status = qla4xxx_build_ddb_list(ha)) == QLA_ERROR)
+               return status;
+
+       /* Wait for an AEN */
+       qla4xxx_devices_ready(ha);
+
+       /*
+        * Targets can come online after the inital discovery, so processing
+        * the aens here will catch them.
+        */
+       if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
+               qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
+
+       return status;
+}
+
+/**
+ * qla4xxx_update_ddb_list - update the driver ddb list
+ * @ha: pointer to host adapter structure.
+ *
+ * This routine obtains device information from the F/W database after
+ * firmware or adapter resets.  The device table is preserved.
+ **/
+int qla4xxx_reinitialize_ddb_list(struct scsi_qla_host *ha)
+{
+       int status = QLA_SUCCESS;
+       struct ddb_entry *ddb_entry, *detemp;
+
+       /* Update the device information for all devices. */
+       list_for_each_entry_safe(ddb_entry, detemp, &ha->ddb_list, list) {
+               qla4xxx_update_ddb_entry(ha, ddb_entry,
+                                        ddb_entry->fw_ddb_index);
+               if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
+                       atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
+                       DEBUG2(printk ("scsi%ld: %s: ddb index [%d] marked "
+                                      "ONLINE\n", ha->host_no, __func__,
+                                      ddb_entry->fw_ddb_index));
+               } else if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE)
+                       qla4xxx_mark_device_missing(ha, ddb_entry);
+       }
+       return status;
+}
+
+/**
+ * qla4xxx_relogin_device - re-establish session
+ * @ha: Pointer to host adapter structure.
+ * @ddb_entry: Pointer to device database entry
+ *
+ * This routine does a session relogin with the specified device.
+ * The ddb entry must be assigned prior to making this call.
+ **/
+int qla4xxx_relogin_device(struct scsi_qla_host *ha,
+                          struct ddb_entry * ddb_entry)
+{
+       uint16_t relogin_timer;
+
+       relogin_timer = max(ddb_entry->default_relogin_timeout,
+                           (uint16_t)RELOGIN_TOV);
+       atomic_set(&ddb_entry->relogin_timer, relogin_timer);
+
+       DEBUG2(printk("scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
+                     ddb_entry->fw_ddb_index, relogin_timer));
+
+       qla4xxx_set_ddb_entry(ha, ddb_entry->fw_ddb_index, 0);
+
+       return QLA_SUCCESS;
+}
+
+/**
+ * qla4010_get_topcat_presence - check if it is QLA4040 TopCat Chip
+ * @ha: Pointer to host adapter structure.
+ *
+ **/
+static int qla4010_get_topcat_presence(struct scsi_qla_host *ha)
+{
+       unsigned long flags;
+       uint16_t topcat;
+
+       if (ql4xxx_lock_nvram(ha) != QLA_SUCCESS)
+               return QLA_ERROR;
+       spin_lock_irqsave(&ha->hardware_lock, flags);
+       topcat = rd_nvram_word(ha, offsetof(struct eeprom_data,
+                                           isp4010.topcat));
+       spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+       if ((topcat & TOPCAT_MASK) == TOPCAT_PRESENT)
+               set_bit(AF_TOPCAT_CHIP_PRESENT, &ha->flags);
+       else
+               clear_bit(AF_TOPCAT_CHIP_PRESENT, &ha->flags);
+       ql4xxx_unlock_nvram(ha);
+       return QLA_SUCCESS;
+}
+
+
+static int qla4xxx_config_nvram(struct scsi_qla_host *ha)
+{
+       unsigned long flags;
+       union external_hw_config_reg extHwConfig;
+
+       DEBUG2(printk("scsi%ld: %s: Get EEProm parameters \n", ha->host_no,
+                     __func__));
+       if (ql4xxx_lock_flash(ha) != QLA_SUCCESS)
+               return (QLA_ERROR);
+       if (ql4xxx_lock_nvram(ha) != QLA_SUCCESS) {
+               ql4xxx_unlock_flash(ha);
+               return (QLA_ERROR);
+       }
+
+       /* Get EEPRom Parameters from NVRAM and validate */
+       dev_info(&ha->pdev->dev, "Configuring NVRAM ...\n");
+       if (qla4xxx_is_nvram_configuration_valid(ha) == QLA_SUCCESS) {
+               spin_lock_irqsave(&ha->hardware_lock, flags);
+               extHwConfig.Asuint32_t =
+                       rd_nvram_word(ha, eeprom_ext_hw_conf_offset(ha));
+               spin_unlock_irqrestore(&ha->hardware_lock, flags);
+       } else {
+               /*
+                * QLogic adapters should always have a valid NVRAM.
+                * If not valid, do not load.
+                */
+               dev_warn(&ha->pdev->dev,
+                          "scsi%ld: %s: EEProm checksum invalid.  "
+                          "Please update your EEPROM\n", ha->host_no,
+                          __func__);
+
+               /* set defaults */
+               if (is_qla4010(ha))
+                       extHwConfig.Asuint32_t = 0x1912;
+               else if (is_qla4022(ha))
+                       extHwConfig.Asuint32_t = 0x0023;
+       }
+       DEBUG(printk("scsi%ld: %s: Setting extHwConfig to 0xFFFF%04x\n",
+                    ha->host_no, __func__, extHwConfig.Asuint32_t));
+
+       spin_lock_irqsave(&ha->hardware_lock, flags);
+       writel((0xFFFF << 16) | extHwConfig.Asuint32_t, isp_ext_hw_conf(ha));
+       readl(isp_ext_hw_conf(ha));
+       spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+       ql4xxx_unlock_nvram(ha);
+       ql4xxx_unlock_flash(ha);
+
+       return (QLA_SUCCESS);
+}
+
+static void qla4x00_pci_config(struct scsi_qla_host *ha)
+{
+       uint16_t w, mwi;
+
+       dev_info(&ha->pdev->dev, "Configuring PCI space...\n");
+
+       pci_set_master(ha->pdev);
+       mwi = 0;
+       if (pci_set_mwi(ha->pdev))
+               mwi = PCI_COMMAND_INVALIDATE;
+       /*
+        * We want to respect framework's setting of PCI configuration space
+        * command register and also want to make sure that all bits of
+        * interest to us are properly set in command register.
+        */
+       pci_read_config_word(ha->pdev, PCI_COMMAND, &w);
+       w |= mwi | (PCI_COMMAND_PARITY | PCI_COMMAND_SERR);
+       w &= ~PCI_COMMAND_INTX_DISABLE;
+       pci_write_config_word(ha->pdev, PCI_COMMAND, w);
+}
+
+static int qla4xxx_start_firmware_from_flash(struct scsi_qla_host *ha)
+{
+       int status = QLA_ERROR;
+       uint32_t max_wait_time;
+       unsigned long flags;
+       uint32_t mbox_status;
+
+       dev_info(&ha->pdev->dev, "Starting firmware ...\n");
+
+       /*
+        * Start firmware from flash ROM
+        *
+        * WORKAROUND: Stuff a non-constant value that the firmware can
+        * use as a seed for a random number generator in MB7 prior to
+        * setting BOOT_ENABLE.  Fixes problem where the TCP
+        * connections use the same TCP ports after each reboot,
+        * causing some connections to not get re-established.
+        */
+       DEBUG(printk("scsi%d: %s: Start firmware from flash ROM\n",
+                    ha->host_no, __func__));
+
+       spin_lock_irqsave(&ha->hardware_lock, flags);
+       writel(jiffies, &ha->reg->mailbox[7]);
+       if (is_qla4022(ha))
+               writel(set_rmask(NVR_WRITE_ENABLE),
+                      &ha->reg->u1.isp4022.nvram);
+
+       writel(set_rmask(CSR_BOOT_ENABLE), &ha->reg->ctrl_status);
+       readl(&ha->reg->ctrl_status);
+       spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+       /* Wait for firmware to come UP. */
+       max_wait_time = FIRMWARE_UP_TOV * 4;
+       do {
+               uint32_t ctrl_status;
+
+               spin_lock_irqsave(&ha->hardware_lock, flags);
+               ctrl_status = readw(&ha->reg->ctrl_status);
+               mbox_status = readw(&ha->reg->mailbox[0]);
+               spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+               if (ctrl_status & set_rmask(CSR_SCSI_PROCESSOR_INTR))
+                       break;
+               if (mbox_status == MBOX_STS_COMMAND_COMPLETE)
+                       break;
+
+               DEBUG2(printk("scsi%ld: %s: Waiting for boot firmware to "
+                             "complete... ctrl_sts=0x%x, remaining=%d\n",
+                             ha->host_no, __func__, ctrl_status,
+                             max_wait_time));
+
+               msleep(250);
+       } while ((max_wait_time--));
+
+       if (mbox_status == MBOX_STS_COMMAND_COMPLETE) {
+               DEBUG(printk("scsi%ld: %s: Firmware has started\n",
+                            ha->host_no, __func__));
+
+               spin_lock_irqsave(&ha->hardware_lock, flags);
+               writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
+                      &ha->reg->ctrl_status);
+               readl(&ha->reg->ctrl_status);
+               spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+               status = QLA_SUCCESS;
+       } else {
+               printk(KERN_INFO "scsi%ld: %s: Boot firmware failed "
+                      "-  mbox status 0x%x\n", ha->host_no, __func__,
+                      mbox_status);
+               status = QLA_ERROR;
+       }
+       return status;
+}
+
+static int ql4xxx_lock_drvr_wait(struct scsi_qla_host *a)
+{
+#define QL4_LOCK_DRVR_WAIT     300
+#define QL4_LOCK_DRVR_SLEEP    100
+
+       int drvr_wait = QL4_LOCK_DRVR_WAIT;
+       while (drvr_wait) {
+               if (ql4xxx_lock_drvr(a) == 0) {
+                       msleep(QL4_LOCK_DRVR_SLEEP);
+                       if (drvr_wait) {
+                               DEBUG2(printk("scsi%ld: %s: Waiting for "
+                                             "Global Init Semaphore...n",
+                                             a->host_no,
+                                             __func__));
+                       }
+                       drvr_wait -= QL4_LOCK_DRVR_SLEEP;
+               } else {
+                       DEBUG2(printk("scsi%ld: %s: Global Init Semaphore "
+                                     "acquired.n", a->host_no, __func__));
+                       return QLA_SUCCESS;
+               }
+       }
+       return QLA_ERROR;
+}
+
+/**
+ * qla4xxx_start_firmware - starts qla4xxx firmware
+ * @ha: Pointer to host adapter structure.
+ *
+ * This routine performs the neccessary steps to start the firmware for
+ * the QLA4010 adapter.
+ **/
+static int qla4xxx_start_firmware(struct scsi_qla_host *ha)
+{
+       unsigned long flags = 0;
+       uint32_t mbox_status;
+       int status = QLA_ERROR;
+       int soft_reset = 1;
+       int config_chip = 0;
+
+       if (is_qla4010(ha)){
+               if (qla4010_get_topcat_presence(ha) != QLA_SUCCESS)
+                       return QLA_ERROR;
+       }
+
+       if (is_qla4022(ha))
+               ql4xxx_set_mac_number(ha);
+
+       if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
+               return QLA_ERROR;
+
+       spin_lock_irqsave(&ha->hardware_lock, flags);
+
+       DEBUG2(printk("scsi%ld: %s: port_ctrl   = 0x%08X\n", ha->host_no,
+                     __func__, readw(isp_port_ctrl(ha))));
+       DEBUG(printk("scsi%ld: %s: port_status = 0x%08X\n", ha->host_no,
+                    __func__, readw(isp_port_status(ha))));
+
+       /* Is Hardware already initialized? */
+       if ((readw(isp_port_ctrl(ha)) & 0x8000) != 0) {
+               DEBUG(printk("scsi%ld: %s: Hardware has already been "
+                            "initialized\n", ha->host_no, __func__));
+
+               /* Receive firmware boot acknowledgement */
+               mbox_status = readw(&ha->reg->mailbox[0]);
+
+               DEBUG2(printk("scsi%ld: %s: H/W Config complete - mbox[0]= "
+                             "0x%x\n", ha->host_no, __func__, mbox_status));
+
+               /* Is firmware already booted? */
+               if (mbox_status == 0) {
+                       /* F/W not running, must be config by net driver */
+                       config_chip = 1;
+                       soft_reset = 0;
+               } else {
+                       writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
+                              &ha->reg->ctrl_status);
+                       readl(&ha->reg->ctrl_status);
+                       spin_unlock_irqrestore(&ha->hardware_lock, flags);
+                       if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS) {
+                               DEBUG2(printk("scsi%ld: %s: Get firmware "
+                                             "state -- state = 0x%x\n",
+                                             ha->host_no,
+                                             __func__, ha->firmware_state));
+                               /* F/W is running */
+                               if (ha->firmware_state &
+                                   FW_STATE_CONFIG_WAIT) {
+                                       DEBUG2(printk("scsi%ld: %s: Firmware "
+                                                     "in known state -- "
+                                                     "config and "
+                                                     "boot, state = 0x%x\n",
+                                                     ha->host_no, __func__,
+                                                     ha->firmware_state));
+                                       config_chip = 1;
+                                       soft_reset = 0;
+                               }
+                       } else {
+                               DEBUG2(printk("scsi%ld: %s: Firmware in "
+                                             "unknown state -- resetting,"
+                                             " state = "
+                                             "0x%x\n", ha->host_no, __func__,
+                                             ha->firmware_state));
+                       }
+                       spin_lock_irqsave(&ha->hardware_lock, flags);
+               }
+       } else {
+               DEBUG(printk("scsi%ld: %s: H/W initialization hasn't been "
+                            "started - resetting\n", ha->host_no, __func__));
+       }
+       spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+       DEBUG(printk("scsi%ld: %s: Flags soft_rest=%d, config= %d\n ",
+                    ha->host_no, __func__, soft_reset, config_chip));
+       if (soft_reset) {
+               DEBUG(printk("scsi%ld: %s: Issue Soft Reset\n", ha->host_no,
+                            __func__));
+               status = qla4xxx_soft_reset(ha);
+               if (status == QLA_ERROR) {
+                       DEBUG(printk("scsi%d: %s: Soft Reset failed!\n",
+                                    ha->host_no, __func__));
+                       ql4xxx_unlock_drvr(ha);
+                       return QLA_ERROR;
+               }
+               config_chip = 1;
+
+               /* Reset clears the semaphore, so aquire again */
+               if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
+                       return QLA_ERROR;
+       }
+
+       if (config_chip) {
+               if ((status = qla4xxx_config_nvram(ha)) == QLA_SUCCESS)
+                       status = qla4xxx_start_firmware_from_flash(ha);
+       }
+
+       ql4xxx_unlock_drvr(ha);
+       if (status == QLA_SUCCESS) {
+               qla4xxx_get_fw_version(ha);
+               if (test_and_clear_bit(AF_GET_CRASH_RECORD, &ha->flags))
+                       qla4xxx_get_crash_record(ha);
+       } else {
+               DEBUG(printk("scsi%ld: %s: Firmware has NOT started\n",
+                            ha->host_no, __func__));
+       }
+       return status;
+}
+
+
+/**
+ * qla4xxx_initialize_adapter - initiailizes hba
+ * @ha: Pointer to host adapter structure.
+ * @renew_ddb_list: Indicates what to do with the adapter's ddb list
+ *     after adapter recovery has completed.
+ *     0=preserve ddb list, 1=destroy and rebuild ddb list
+ *
+ * This routine parforms all of the steps necessary to initialize the adapter.
+ *
+ **/
+int qla4xxx_initialize_adapter(struct scsi_qla_host *ha,
+                              uint8_t renew_ddb_list)
+{
+       int status = QLA_ERROR;
+       int8_t ip_address[IP_ADDR_LEN] = {0} ;
+
+       ha->eeprom_cmd_data = 0;
+
+       qla4x00_pci_config(ha);
+
+       qla4xxx_disable_intrs(ha);
+
+       /* Initialize the Host adapter request/response queues and firmware */
+       if (qla4xxx_start_firmware(ha) == QLA_ERROR)
+               return status;
+
+       if (qla4xxx_validate_mac_address(ha) == QLA_ERROR)
+               return status;
+
+       if (qla4xxx_init_local_data(ha) == QLA_ERROR)
+               return status;
+
+       status = qla4xxx_init_firmware(ha);
+       if (status == QLA_ERROR)
+               return status;
+
+       /*
+        * FW is waiting to get an IP address from DHCP server: Skip building
+        * the ddb_list and wait for DHCP lease acquired aen to come in
+        * followed by 0x8014 aen" to trigger the tgt discovery process.
+        */
+       if (ha->firmware_state & FW_STATE_DHCP_IN_PROGRESS)
+               return status;
+
+       /* Skip device discovery if ip and subnet is zero */
+       if (memcmp(ha->ip_address, ip_address, IP_ADDR_LEN) == 0 ||
+           memcmp(ha->subnet_mask, ip_address, IP_ADDR_LEN) == 0)
+               return status;
+
+       if (renew_ddb_list == PRESERVE_DDB_LIST) {
+               /*
+                * We want to preserve lun states (i.e. suspended, etc.)
+                * for recovery initiated by the driver.  So just update
+                * the device states for the existing ddb_list.
+                */
+               qla4xxx_reinitialize_ddb_list(ha);
+       } else if (renew_ddb_list == REBUILD_DDB_LIST) {
+               /*
+                * We want to build the ddb_list from scratch during
+                * driver initialization and recovery initiated by the
+                * INT_HBA_RESET IOCTL.
+                */
+               status = qla4xxx_initialize_ddb_list(ha);
+               if (status == QLA_ERROR) {
+                       DEBUG2(printk("%s(%ld) Error occurred during build"
+                                     "ddb list\n", __func__, ha->host_no));
+                       goto exit_init_hba;
+               }
+
+       }
+       if (!ha->tot_ddbs) {
+               DEBUG2(printk("scsi%ld: Failed to initialize devices or none "
+                             "present in Firmware device database\n",
+                             ha->host_no));
+       }
+
+ exit_init_hba:
+       return status;
+
+}
+
+/**
+ * qla4xxx_add_device_dynamically - ddb addition due to an AEN
+ * @ha:  Pointer to host adapter structure.
+ * @fw_ddb_index:  Firmware's device database index
+ *
+ * This routine processes adds a device as a result of an 8014h AEN.
+ **/
+static void qla4xxx_add_device_dynamically(struct scsi_qla_host *ha,
+                                          uint32_t fw_ddb_index)
+{
+       struct ddb_entry * ddb_entry;
+
+       /* First allocate a device structure */
+       ddb_entry = qla4xxx_get_ddb_entry(ha, fw_ddb_index);
+       if (ddb_entry == NULL) {
+               DEBUG2(printk(KERN_WARNING
+                             "scsi%ld: Unable to allocate memory to add "
+                             "fw_ddb_index %d\n", ha->host_no, fw_ddb_index));
+               return;
+       }
+
+       if (qla4xxx_update_ddb_entry(ha, ddb_entry, fw_ddb_index) ==
+                                   QLA_ERROR) {
+               ha->fw_ddb_index_map[fw_ddb_index] =
+                                       (struct ddb_entry *)INVALID_ENTRY;
+               DEBUG2(printk(KERN_WARNING
+                             "scsi%ld: failed to add new device at index "
+                             "[%d]\n Unable to retrieve fw ddb entry\n",
+                             ha->host_no, fw_ddb_index));
+               qla4xxx_free_ddb(ha, ddb_entry);
+               return;
+       }
+
+       if (qla4xxx_add_sess(ddb_entry)) {
+               DEBUG2(printk(KERN_WARNING
+                             "scsi%ld: failed to add new device at index "
+                             "[%d]\n Unable to add connection and session\n",
+                             ha->host_no, fw_ddb_index));
+               qla4xxx_free_ddb(ha, ddb_entry);
+       }
+}
+
+/**
+ * qla4xxx_process_ddb_changed - process ddb state change
+ * @ha - Pointer to host adapter structure.
+ * @fw_ddb_index - Firmware's device database index
+ * @state - Device state
+ *
+ * This routine processes a Decive Database Changed AEN Event.
+ **/
+int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha,
+                               uint32_t fw_ddb_index, uint32_t state)
+{
+       struct ddb_entry * ddb_entry;
+       uint32_t old_fw_ddb_device_state;
+
+       /* check for out of range index */
+       if (fw_ddb_index >= MAX_DDB_ENTRIES)
+               return QLA_ERROR;
+
+       /* Get the corresponging ddb entry */
+       ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, fw_ddb_index);
+       /* Device does not currently exist in our database. */
+       if (ddb_entry == NULL) {
+               if (state == DDB_DS_SESSION_ACTIVE)
+                       qla4xxx_add_device_dynamically(ha, fw_ddb_index);
+               return QLA_SUCCESS;
+       }
+
+       /* Device already exists in our database. */
+       old_fw_ddb_device_state = ddb_entry->fw_ddb_device_state;
+       DEBUG2(printk("scsi%ld: %s DDB - old state= 0x%x, new state=0x%x for "
+                     "index [%d]\n", ha->host_no, __func__,
+                     ddb_entry->fw_ddb_device_state, state, fw_ddb_index));
+       if (old_fw_ddb_device_state == state &&
+           state == DDB_DS_SESSION_ACTIVE) {
+               /* Do nothing, state not changed. */
+               return QLA_SUCCESS;
+       }
+
+       ddb_entry->fw_ddb_device_state = state;
+       /* Device is back online. */
+       if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
+               atomic_set(&ddb_entry->port_down_timer,
+                          ha->port_down_retry_count);
+               atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
+               atomic_set(&ddb_entry->relogin_retry_count, 0);
+               atomic_set(&ddb_entry->relogin_timer, 0);
+               clear_bit(DF_RELOGIN, &ddb_entry->flags);
+               clear_bit(DF_NO_RELOGIN, &ddb_entry->flags);
+               iscsi_if_create_session_done(ddb_entry->conn);
+               /*
+                * Change the lun state to READY in case the lun TIMEOUT before
+                * the device came back.
+                */
+       } else {
+               /* Device went away, try to relogin. */
+               /* Mark device missing */
+               if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE)
+                       qla4xxx_mark_device_missing(ha, ddb_entry);
+               /*
+                * Relogin if device state changed to a not active state.
+                * However, do not relogin if this aen is a result of an IOCTL
+                * logout (DF_NO_RELOGIN) or if this is a discovered device.
+                */
+               if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_FAILED &&
+                   !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
+                   !test_bit(DF_NO_RELOGIN, &ddb_entry->flags) &&
+                   !test_bit(DF_ISNS_DISCOVERED, &ddb_entry->flags)) {
+                       /*
+                        * This triggers a relogin.  After the relogin_timer
+                        * expires, the relogin gets scheduled.  We must wait a
+                        * minimum amount of time since receiving an 0x8014 AEN
+                        * with failed device_state or a logout response before
+                        * we can issue another relogin.
+                        */
+                       /* Firmware padds this timeout: (time2wait +1).
+                        * Driver retry to login should be longer than F/W.
+                        * Otherwise F/W will fail
+                        * set_ddb() mbx cmd with 0x4005 since it still
+                        * counting down its time2wait.
+                        */
+                       atomic_set(&ddb_entry->relogin_timer, 0);
+                       atomic_set(&ddb_entry->retry_relogin_timer,
+                                  ddb_entry->default_time2wait + 4);
+               }
+       }
+
+       return QLA_SUCCESS;
+}
+
diff --git a/drivers/scsi/qla4xxx/ql4_inline.h b/drivers/scsi/qla4xxx/ql4_inline.h
new file mode 100644 (file)
index 0000000..0d61797
--- /dev/null
@@ -0,0 +1,84 @@
+/*
+ * QLogic iSCSI HBA Driver
+ * Copyright (c)  2003-2006 QLogic Corporation
+ *
+ * See LICENSE.qla4xxx for copyright and licensing details.
+ */
+
+/*
+ *
+ * qla4xxx_lookup_ddb_by_fw_index
+ *     This routine locates a device handle given the firmware device
+ *     database index.  If device doesn't exist, returns NULL.
+ *
+ * Input:
+ *     ha - Pointer to host adapter structure.
+ *     fw_ddb_index - Firmware's device database index
+ *
+ * Returns:
+ *     Pointer to the corresponding internal device database structure
+ */
+static inline struct ddb_entry *
+qla4xxx_lookup_ddb_by_fw_index(struct scsi_qla_host *ha, uint32_t fw_ddb_index)
+{
+       struct ddb_entry *ddb_entry = NULL;
+
+       if ((fw_ddb_index < MAX_DDB_ENTRIES) &&
+           (ha->fw_ddb_index_map[fw_ddb_index] !=
+               (struct ddb_entry *) INVALID_ENTRY)) {
+               ddb_entry = ha->fw_ddb_index_map[fw_ddb_index];
+       }
+
+       DEBUG3(printk("scsi%d: %s: index [%d], ddb_entry = %p\n",
+           ha->host_no, __func__, fw_ddb_index, ddb_entry));
+
+       return ddb_entry;
+}
+
+static inline void
+__qla4xxx_enable_intrs(struct scsi_qla_host *ha)
+{
+       if (is_qla4022(ha)) {
+               writel(set_rmask(IMR_SCSI_INTR_ENABLE),
+                      &ha->reg->u1.isp4022.intr_mask);
+               readl(&ha->reg->u1.isp4022.intr_mask);
+       } else {
+               writel(set_rmask(CSR_SCSI_INTR_ENABLE), &ha->reg->ctrl_status);
+               readl(&ha->reg->ctrl_status);
+       }
+       set_bit(AF_INTERRUPTS_ON, &ha->flags);
+}
+
+static inline void
+__qla4xxx_disable_intrs(struct scsi_qla_host *ha)
+{
+       if (is_qla4022(ha)) {
+               writel(clr_rmask(IMR_SCSI_INTR_ENABLE),
+                      &ha->reg->u1.isp4022.intr_mask);
+               readl(&ha->reg->u1.isp4022.intr_mask);
+       } else {
+               writel(clr_rmask(CSR_SCSI_INTR_ENABLE), &ha->reg->ctrl_status);
+               readl(&ha->reg->ctrl_status);
+       }
+       clear_bit(AF_INTERRUPTS_ON, &ha->flags);
+}
+
+static inline void
+qla4xxx_enable_intrs(struct scsi_qla_host *ha)
+{
+       unsigned long flags;
+
+       spin_lock_irqsave(&ha->hardware_lock, flags);
+       __qla4xxx_enable_intrs(ha);
+       spin_unlock_irqrestore(&ha->hardware_lock, flags);
+}
+
+static inline void
+qla4xxx_disable_intrs(struct scsi_qla_host *ha)
+{
+       unsigned long flags;
+
+       spin_lock_irqsave(&ha->hardware_lock, flags);
+       __qla4xxx_disable_intrs(ha);
+       spin_unlock_irqrestore(&ha->hardware_lock, flags);
+}
diff --git a/drivers/scsi/qla4xxx/ql4_iocb.c b/drivers/scsi/qla4xxx/ql4_iocb.c
new file mode 100644 (file)
index 0000000..c0a254b
--- /dev/null
@@ -0,0 +1,368 @@
+/*
+ * QLogic iSCSI HBA Driver
+ * Copyright (c)  2003-2006 QLogic Corporation
+ *
+ * See LICENSE.qla4xxx for copyright and licensing details.
+ */
+
+#include "ql4_def.h"
+
+#include <scsi/scsi_tcq.h>
+
+/**
+ * qla4xxx_get_req_pkt - returns a valid entry in request queue.
+ * @ha: Pointer to host adapter structure.
+ * @queue_entry: Pointer to pointer to queue entry structure
+ *
+ * This routine performs the following tasks:
+ *     - returns the current request_in pointer (if queue not full)
+ *     - advances the request_in pointer
+ *     - checks for queue full
+ **/
+int qla4xxx_get_req_pkt(struct scsi_qla_host *ha,
+                       struct queue_entry **queue_entry)
+{
+       uint16_t request_in;
+       uint8_t status = QLA_SUCCESS;
+
+       *queue_entry = ha->request_ptr;
+
+       /* get the latest request_in and request_out index */
+       request_in = ha->request_in;
+       ha->request_out = (uint16_t) le32_to_cpu(ha->shadow_regs->req_q_out);
+
+       /* Advance request queue pointer and check for queue full */
+       if (request_in == (REQUEST_QUEUE_DEPTH - 1)) {
+               request_in = 0;
+               ha->request_ptr = ha->request_ring;
+       } else {
+               request_in++;
+               ha->request_ptr++;
+       }
+
+       /* request queue is full, try again later */
+       if ((ha->iocb_cnt + 1) >= ha->iocb_hiwat) {
+               /* restore request pointer */
+               ha->request_ptr = *queue_entry;
+               status = QLA_ERROR;
+       } else {
+               ha->request_in = request_in;
+               memset(*queue_entry, 0, sizeof(**queue_entry));
+       }
+
+       return status;
+}
+
+/**
+ * qla4xxx_send_marker_iocb - issues marker iocb to HBA
+ * @ha: Pointer to host adapter structure.
+ * @ddb_entry: Pointer to device database entry
+ * @lun: SCSI LUN
+ * @marker_type: marker identifier
+ *
+ * This routine issues a marker IOCB.
+ **/
+int qla4xxx_send_marker_iocb(struct scsi_qla_host *ha,
+                            struct ddb_entry *ddb_entry, int lun)
+{
+       struct marker_entry *marker_entry;
+       unsigned long flags = 0;
+       uint8_t status = QLA_SUCCESS;
+
+       /* Acquire hardware specific lock */
+       spin_lock_irqsave(&ha->hardware_lock, flags);
+
+       /* Get pointer to the queue entry for the marker */
+       if (qla4xxx_get_req_pkt(ha, (struct queue_entry **) &marker_entry) !=
+           QLA_SUCCESS) {
+               status = QLA_ERROR;
+               goto exit_send_marker;
+       }
+
+       /* Put the marker in the request queue */
+       marker_entry->hdr.entryType = ET_MARKER;
+       marker_entry->hdr.entryCount = 1;
+       marker_entry->target = cpu_to_le16(ddb_entry->fw_ddb_index);
+       marker_entry->modifier = cpu_to_le16(MM_LUN_RESET);
+       int_to_scsilun(lun, &marker_entry->lun);
+       wmb();
+
+       /* Tell ISP it's got a new I/O request */
+       writel(ha->request_in, &ha->reg->req_q_in);
+       readl(&ha->reg->req_q_in);
+
+exit_send_marker:
+       spin_unlock_irqrestore(&ha->hardware_lock, flags);
+       return status;
+}
+
+struct continuation_t1_entry* qla4xxx_alloc_cont_entry(
+       struct scsi_qla_host *ha)
+{
+       struct continuation_t1_entry *cont_entry;
+
+       cont_entry = (struct continuation_t1_entry *)ha->request_ptr;
+
+       /* Advance request queue pointer */
+       if (ha->request_in == (REQUEST_QUEUE_DEPTH - 1)) {
+               ha->request_in = 0;
+               ha->request_ptr = ha->request_ring;
+       } else {
+               ha->request_in++;
+               ha->request_ptr++;
+       }
+
+       /* Load packet defaults */
+       cont_entry->hdr.entryType = ET_CONTINUE;
+       cont_entry->hdr.entryCount = 1;
+       cont_entry->hdr.systemDefined = (uint8_t) cpu_to_le16(ha->request_in);
+
+       return cont_entry;
+}
+
+uint16_t qla4xxx_calc_request_entries(uint16_t dsds)
+{
+       uint16_t iocbs;
+
+       iocbs = 1;
+       if (dsds > COMMAND_SEG) {
+               iocbs += (dsds - COMMAND_SEG) / CONTINUE_SEG;
+               if ((dsds - COMMAND_SEG) % CONTINUE_SEG)
+                       iocbs++;
+       }
+       return iocbs;
+}
+
+void qla4xxx_build_scsi_iocbs(struct srb *srb,
+                             struct command_t3_entry *cmd_entry,
+                             uint16_t tot_dsds)
+{
+       struct scsi_qla_host *ha;
+       uint16_t avail_dsds;
+       struct data_seg_a64 *cur_dsd;
+       struct scsi_cmnd *cmd;
+
+       cmd = srb->cmd;
+       ha = srb->ha;
+
+       if (cmd->request_bufflen == 0 || cmd->sc_data_direction == DMA_NONE) {
+               /* No data being transferred */
+               cmd_entry->ttlByteCnt = __constant_cpu_to_le32(0);
+               return;
+       }
+
+       avail_dsds = COMMAND_SEG;
+       cur_dsd = (struct data_seg_a64 *) & (cmd_entry->dataseg[0]);
+
+       /* Load data segments */
+       if (cmd->use_sg) {
+               struct scatterlist *cur_seg;
+               struct scatterlist *end_seg;
+
+               cur_seg = (struct scatterlist *)cmd->request_buffer;
+               end_seg = cur_seg + tot_dsds;
+               while (cur_seg < end_seg) {
+                       dma_addr_t sle_dma;
+
+                       /* Allocate additional continuation packets? */
+                       if (avail_dsds == 0) {
+                               struct continuation_t1_entry *cont_entry;
+
+                               cont_entry = qla4xxx_alloc_cont_entry(ha);
+                               cur_dsd =
+                                       (struct data_seg_a64 *)
+                                       &cont_entry->dataseg[0];
+                               avail_dsds = CONTINUE_SEG;
+                       }
+
+                       sle_dma = sg_dma_address(cur_seg);
+                       cur_dsd->base.addrLow = cpu_to_le32(LSDW(sle_dma));
+                       cur_dsd->base.addrHigh = cpu_to_le32(MSDW(sle_dma));
+                       cur_dsd->count = cpu_to_le32(sg_dma_len(cur_seg));
+                       avail_dsds--;
+
+                       cur_dsd++;
+                       cur_seg++;
+               }
+       } else {
+               cur_dsd->base.addrLow = cpu_to_le32(LSDW(srb->dma_handle));
+               cur_dsd->base.addrHigh = cpu_to_le32(MSDW(srb->dma_handle));
+               cur_dsd->count = cpu_to_le32(cmd->request_bufflen);
+       }
+}
+
+/**
+ * qla4xxx_send_command_to_isp - issues command to HBA
+ * @ha: pointer to host adapter structure.
+ * @srb: pointer to SCSI Request Block to be sent to ISP
+ *
+ * This routine is called by qla4xxx_queuecommand to build an ISP
+ * command and pass it to the ISP for execution.
+ **/
+int qla4xxx_send_command_to_isp(struct scsi_qla_host *ha, struct srb * srb)
+{
+       struct scsi_cmnd *cmd = srb->cmd;
+       struct ddb_entry *ddb_entry;
+       struct command_t3_entry *cmd_entry;
+       struct scatterlist *sg = NULL;
+
+       uint16_t tot_dsds;
+       uint16_t req_cnt;
+
+       unsigned long flags;
+       uint16_t cnt;
+       uint32_t index;
+       char tag[2];
+
+       /* Get real lun and adapter */
+       ddb_entry = srb->ddb;
+
+       /* Send marker(s) if needed. */
+       if (ha->marker_needed == 1) {
+               if (qla4xxx_send_marker_iocb(ha, ddb_entry,
+                                            cmd->device->lun) != QLA_SUCCESS)
+                       return QLA_ERROR;
+
+               ha->marker_needed = 0;
+       }
+       tot_dsds = 0;
+
+       /* Acquire hardware specific lock */
+       spin_lock_irqsave(&ha->hardware_lock, flags);
+
+       index = (uint32_t)cmd->request->tag;
+
+       /* Calculate the number of request entries needed. */
+       if (cmd->use_sg) {
+               sg = (struct scatterlist *)cmd->request_buffer;
+               tot_dsds = pci_map_sg(ha->pdev, sg, cmd->use_sg,
+                                     cmd->sc_data_direction);
+               if (tot_dsds == 0)
+                       goto queuing_error;
+       } else if (cmd->request_bufflen) {
+               dma_addr_t      req_dma;
+
+               req_dma = pci_map_single(ha->pdev, cmd->request_buffer,
+                                        cmd->request_bufflen,
+                                        cmd->sc_data_direction);
+               if (dma_mapping_error(req_dma))
+                       goto queuing_error;
+
+               srb->dma_handle = req_dma;
+               tot_dsds = 1;
+       }
+       req_cnt = qla4xxx_calc_request_entries(tot_dsds);
+
+       if (ha->req_q_count < (req_cnt + 2)) {
+               cnt = (uint16_t) le32_to_cpu(ha->shadow_regs->req_q_out);
+               if (ha->request_in < cnt)
+                       ha->req_q_count = cnt - ha->request_in;
+               else
+                       ha->req_q_count = REQUEST_QUEUE_DEPTH -
+                               (ha->request_in - cnt);
+       }
+
+       if (ha->req_q_count < (req_cnt + 2))
+               goto queuing_error;
+
+       /* total iocbs active */
+       if ((ha->iocb_cnt + req_cnt) >= REQUEST_QUEUE_DEPTH)
+               goto queuing_error;
+
+       /* Build command packet */
+       cmd_entry = (struct command_t3_entry *) ha->request_ptr;
+       memset(cmd_entry, 0, sizeof(struct command_t3_entry));
+       cmd_entry->hdr.entryType = ET_COMMAND;
+       cmd_entry->handle = cpu_to_le32(index);
+       cmd_entry->target = cpu_to_le16(ddb_entry->fw_ddb_index);
+       cmd_entry->connection_id = cpu_to_le16(ddb_entry->connection_id);
+
+       int_to_scsilun(cmd->device->lun, &cmd_entry->lun);
+       cmd_entry->cmdSeqNum = cpu_to_le32(ddb_entry->CmdSn);
+       cmd_entry->ttlByteCnt = cpu_to_le32(cmd->request_bufflen);
+       memcpy(cmd_entry->cdb, cmd->cmnd, cmd->cmd_len);
+       cmd_entry->dataSegCnt = cpu_to_le16(tot_dsds);
+       cmd_entry->hdr.entryCount = req_cnt;
+
+       /* Set data transfer direction control flags
+        * NOTE: Look at data_direction bits iff there is data to be
+        *       transferred, as the data direction bit is sometimed filled
+        *       in when there is no data to be transferred */
+       cmd_entry->control_flags = CF_NO_DATA;
+       if (cmd->request_bufflen) {
+               if (cmd->sc_data_direction == DMA_TO_DEVICE)
+                       cmd_entry->control_flags = CF_WRITE;
+               else if (cmd->sc_data_direction == DMA_FROM_DEVICE)
+                       cmd_entry->control_flags = CF_READ;
+       }
+
+       /* Set tagged queueing control flags */
+       cmd_entry->control_flags |= CF_SIMPLE_TAG;
+       if (scsi_populate_tag_msg(cmd, tag))
+               switch (tag[0]) {
+               case MSG_HEAD_TAG:
+                       cmd_entry->control_flags |= CF_HEAD_TAG;
+                       break;
+               case MSG_ORDERED_TAG:
+                       cmd_entry->control_flags |= CF_ORDERED_TAG;
+                       break;
+               }
+
+
+       /* Advance request queue pointer */
+       ha->request_in++;
+       if (ha->request_in == REQUEST_QUEUE_DEPTH) {
+               ha->request_in = 0;
+               ha->request_ptr = ha->request_ring;
+       } else
+               ha->request_ptr++;
+
+
+       qla4xxx_build_scsi_iocbs(srb, cmd_entry, tot_dsds);
+       wmb();
+
+       /*
+        * Check to see if adapter is online before placing request on
+        * request queue.  If a reset occurs and a request is in the queue,
+        * the firmware will still attempt to process the request, retrieving
+        * garbage for pointers.
+        */
+       if (!test_bit(AF_ONLINE, &ha->flags)) {
+               DEBUG2(printk("scsi%ld: %s: Adapter OFFLINE! "
+                             "Do not issue command.\n",
+                             ha->host_no, __func__));
+               goto queuing_error;
+       }
+
+       srb->cmd->host_scribble = (unsigned char *)srb;
+
+       /* update counters */
+       srb->state = SRB_ACTIVE_STATE;
+       srb->flags |= SRB_DMA_VALID;
+
+       /* Track IOCB used */
+       ha->iocb_cnt += req_cnt;
+       srb->iocb_cnt = req_cnt;
+       ha->req_q_count -= req_cnt;
+
+       /* Debug print statements */
+       writel(ha->request_in, &ha->reg->req_q_in);
+       readl(&ha->reg->req_q_in);
+       spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+       return QLA_SUCCESS;
+
+queuing_error:
+
+       if (cmd->use_sg && tot_dsds) {
+               sg = (struct scatterlist *) cmd->request_buffer;
+               pci_unmap_sg(ha->pdev, sg, cmd->use_sg,
+                            cmd->sc_data_direction);
+       } else if (tot_dsds)
+               pci_unmap_single(ha->pdev, srb->dma_handle,
+                                cmd->request_bufflen, cmd->sc_data_direction);
+       spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+       return QLA_ERROR;
+}
+
diff --git a/drivers/scsi/qla4xxx/ql4_isr.c b/drivers/scsi/qla4xxx/ql4_isr.c
new file mode 100644 (file)
index 0000000..b584317
--- /dev/null
@@ -0,0 +1,797 @@
+/*
+ * QLogic iSCSI HBA Driver
+ * Copyright (c)  2003-2006 QLogic Corporation
+ *
+ * See LICENSE.qla4xxx for copyright and licensing details.
+ */
+
+#include "ql4_def.h"
+
+/**
+ * qla2x00_process_completed_request() - Process a Fast Post response.
+ * @ha: SCSI driver HA context
+ * @index: SRB index
+ **/
+static void qla4xxx_process_completed_request(struct scsi_qla_host *ha,
+                                             uint32_t index)
+{
+       struct srb *srb;
+
+       srb = qla4xxx_del_from_active_array(ha, index);
+       if (srb) {
+               /* Save ISP completion status */
+               srb->cmd->result = DID_OK << 16;
+               qla4xxx_srb_compl(ha, srb);
+       } else {
+               DEBUG2(printk("scsi%ld: Invalid ISP SCSI completion handle = "
+                             "%d\n", ha->host_no, index));
+               set_bit(DPC_RESET_HA, &ha->dpc_flags);
+       }
+}
+
+/**
+ * qla4xxx_status_entry - processes status IOCBs
+ * @ha: Pointer to host adapter structure.
+ * @sts_entry: Pointer to status entry structure.
+ **/
+static void qla4xxx_status_entry(struct scsi_qla_host *ha,
+                                struct status_entry *sts_entry)
+{
+       uint8_t scsi_status;
+       struct scsi_cmnd *cmd;
+       struct srb *srb;
+       struct ddb_entry *ddb_entry;
+       uint32_t residual;
+       uint16_t sensebytecnt;
+
+       if (sts_entry->completionStatus == SCS_COMPLETE &&
+           sts_entry->scsiStatus == 0) {
+               qla4xxx_process_completed_request(ha,
+                                                 le32_to_cpu(sts_entry->
+                                                             handle));
+               return;
+       }
+
+       srb = qla4xxx_del_from_active_array(ha, le32_to_cpu(sts_entry->handle));
+       if (!srb) {
+               /* FIXMEdg: Don't we need to reset ISP in this case??? */
+               DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Status Entry invalid "
+                             "handle 0x%x, sp=%p. This cmd may have already "
+                             "been completed.\n", ha->host_no, __func__,
+                             le32_to_cpu(sts_entry->handle), srb));
+               return;
+       }
+
+       cmd = srb->cmd;
+       if (cmd == NULL) {
+               DEBUG2(printk("scsi%ld: %s: Command already returned back to "
+                             "OS pkt->handle=%d srb=%p srb->state:%d\n",
+                             ha->host_no, __func__, sts_entry->handle,
+                             srb, srb->state));
+               dev_warn(&ha->pdev->dev, "Command is NULL:"
+                       " already returned to OS (srb=%p)\n", srb);
+               return;
+       }
+
+       ddb_entry = srb->ddb;
+       if (ddb_entry == NULL) {
+               cmd->result = DID_NO_CONNECT << 16;
+               goto status_entry_exit;
+       }
+
+       residual = le32_to_cpu(sts_entry->residualByteCnt);
+
+       /* Translate ISP error to a Linux SCSI error. */
+       scsi_status = sts_entry->scsiStatus;
+       switch (sts_entry->completionStatus) {
+       case SCS_COMPLETE:
+               if (scsi_status == 0) {
+                       cmd->result = DID_OK << 16;
+                       break;
+               }
+
+               if (sts_entry->iscsiFlags &
+                   (ISCSI_FLAG_RESIDUAL_OVER|ISCSI_FLAG_RESIDUAL_UNDER))
+                       cmd->resid = residual;
+
+               cmd->result = DID_OK << 16 | scsi_status;
+
+               if (scsi_status != SCSI_CHECK_CONDITION)
+                       break;
+
+               /* Copy Sense Data into sense buffer. */
+               memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer));
+
+               sensebytecnt = le16_to_cpu(sts_entry->senseDataByteCnt);
+               if (sensebytecnt == 0)
+                       break;
+
+               memcpy(cmd->sense_buffer, sts_entry->senseData,
+                      min(sensebytecnt,
+                          (uint16_t) sizeof(cmd->sense_buffer)));
+
+               DEBUG2(printk("scsi%ld:%d:%d:%d: %s: sense key = %x, "
+                             "ASC/ASCQ = %02x/%02x\n", ha->host_no,
+                             cmd->device->channel, cmd->device->id,
+                             cmd->device->lun, __func__,
+                             sts_entry->senseData[2] & 0x0f,
+                             sts_entry->senseData[12],
+                             sts_entry->senseData[13]));
+
+               srb->flags |= SRB_GOT_SENSE;
+               break;
+
+       case SCS_INCOMPLETE:
+               /* Always set the status to DID_ERROR, since
+                * all conditions result in that status anyway */
+               cmd->result = DID_ERROR << 16;
+               break;
+
+       case SCS_RESET_OCCURRED:
+               DEBUG2(printk("scsi%ld:%d:%d:%d: %s: Device RESET occurred\n",
+                             ha->host_no, cmd->device->channel,
+                             cmd->device->id, cmd->device->lun, __func__));
+
+               cmd->result = DID_RESET << 16;
+               break;
+
+       case SCS_ABORTED:
+               DEBUG2(printk("scsi%ld:%d:%d:%d: %s: Abort occurred\n",
+                             ha->host_no, cmd->device->channel,
+                             cmd->device->id, cmd->device->lun, __func__));
+
+               cmd->result = DID_RESET << 16;
+               break;
+
+       case SCS_TIMEOUT:
+               DEBUG2(printk(KERN_INFO "scsi%ld:%d:%d:%d: Timeout\n",
+                             ha->host_no, cmd->device->channel,
+                             cmd->device->id, cmd->device->lun));
+
+               cmd->result = DID_BUS_BUSY << 16;
+
+               /*
+                * Mark device missing so that we won't continue to send
+                * I/O to this device.  We should get a ddb state change
+                * AEN soon.
+                */
+               if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE)
+                       qla4xxx_mark_device_missing(ha, ddb_entry);
+               break;
+
+       case SCS_DATA_UNDERRUN:
+       case SCS_DATA_OVERRUN:
+               if (sts_entry->iscsiFlags & ISCSI_FLAG_RESIDUAL_OVER) {
+                       DEBUG2(printk("scsi%ld:%d:%d:%d: %s: " "Data overrun, "
+                                     "residual = 0x%x\n", ha->host_no,
+                                     cmd->device->channel, cmd->device->id,
+                                     cmd->device->lun, __func__, residual));
+
+                       cmd->result = DID_ERROR << 16;
+                       break;
+               }
+
+               if ((sts_entry->iscsiFlags & ISCSI_FLAG_RESIDUAL_UNDER) == 0) {
+                       /*
+                        * Firmware detected a SCSI transport underrun
+                        * condition
+                        */
+                       cmd->resid = residual;
+                       DEBUG2(printk("scsi%ld:%d:%d:%d: %s: UNDERRUN status "
+                                     "detected, xferlen = 0x%x, residual = "
+                                     "0x%x\n",
+                                     ha->host_no, cmd->device->channel,
+                                     cmd->device->id,
+                                     cmd->device->lun, __func__,
+                                     cmd->request_bufflen,
+                                     residual));
+               }
+
+               /*
+                * If there is scsi_status, it takes precedense over
+                * underflow condition.
+                */
+               if (scsi_status != 0) {
+                       cmd->result = DID_OK << 16 | scsi_status;
+
+                       if (scsi_status != SCSI_CHECK_CONDITION)
+                               break;
+
+                       /* Copy Sense Data into sense buffer. */
+                       memset(cmd->sense_buffer, 0,
+                              sizeof(cmd->sense_buffer));
+
+                       sensebytecnt =
+                               le16_to_cpu(sts_entry->senseDataByteCnt);
+                       if (sensebytecnt == 0)
+                               break;
+
+                       memcpy(cmd->sense_buffer, sts_entry->senseData,
+                              min(sensebytecnt,
+                                  (uint16_t) sizeof(cmd->sense_buffer)));
+
+                       DEBUG2(printk("scsi%ld:%d:%d:%d: %s: sense key = %x, "
+                                     "ASC/ASCQ = %02x/%02x\n", ha->host_no,
+                                     cmd->device->channel, cmd->device->id,
+                                     cmd->device->lun, __func__,
+                                     sts_entry->senseData[2] & 0x0f,
+                                     sts_entry->senseData[12],
+                                     sts_entry->senseData[13]));
+               } else {
+                       /*
+                        * If RISC reports underrun and target does not
+                        * report it then we must have a lost frame, so
+                        * tell upper layer to retry it by reporting a
+                        * bus busy.
+                        */
+                       if ((sts_entry->iscsiFlags &
+                            ISCSI_FLAG_RESIDUAL_UNDER) == 0) {
+                               cmd->result = DID_BUS_BUSY << 16;
+                       } else if ((cmd->request_bufflen - residual) <
+                                  cmd->underflow) {
+                               /*
+                                * Handle mid-layer underflow???
+                                *
+                                * For kernels less than 2.4, the driver must
+                                * return an error if an underflow is detected.
+                                * For kernels equal-to and above 2.4, the
+                                * mid-layer will appearantly handle the
+                                * underflow by detecting the residual count --
+                                * unfortunately, we do not see where this is
+                                * actually being done.  In the interim, we
+                                * will return DID_ERROR.
+                                */
+                               DEBUG2(printk("scsi%ld:%d:%d:%d: %s: "
+                                             "Mid-layer Data underrun, "
+                                             "xferlen = 0x%x, "
+                                             "residual = 0x%x\n", ha->host_no,
+                                             cmd->device->channel,
+                                             cmd->device->id,
+                                             cmd->device->lun, __func__,
+                                             cmd->request_bufflen, residual));
+
+                               cmd->result = DID_ERROR << 16;
+                       } else {
+                               cmd->result = DID_OK << 16;
+                       }
+               }
+               break;
+
+       case SCS_DEVICE_LOGGED_OUT:
+       case SCS_DEVICE_UNAVAILABLE:
+               /*
+                * Mark device missing so that we won't continue to
+                * send I/O to this device.  We should get a ddb
+                * state change AEN soon.
+                */
+               if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE)
+                       qla4xxx_mark_device_missing(ha, ddb_entry);
+
+               cmd->result = DID_BUS_BUSY << 16;
+               break;
+
+       case SCS_QUEUE_FULL:
+               /*
+                * SCSI Mid-Layer handles device queue full
+                */
+               cmd->result = DID_OK << 16 | sts_entry->scsiStatus;
+               DEBUG2(printk("scsi%ld:%d:%d: %s: QUEUE FULL detected "
+                             "compl=%02x, scsi=%02x, state=%02x, iFlags=%02x,"
+                             " iResp=%02x\n", ha->host_no, cmd->device->id,
+                             cmd->device->lun, __func__,
+                             sts_entry->completionStatus,
+                             sts_entry->scsiStatus, sts_entry->state_flags,
+                             sts_entry->iscsiFlags,
+                             sts_entry->iscsiResponse));
+               break;
+
+       default:
+               cmd->result = DID_ERROR << 16;
+               break;
+       }
+
+status_entry_exit:
+
+       /* complete the request */
+       srb->cc_stat = sts_entry->completionStatus;
+       qla4xxx_srb_compl(ha, srb);
+}
+
+/**
+ * qla4xxx_process_response_queue - process response queue completions
+ * @ha: Pointer to host adapter structure.
+ *
+ * This routine process response queue completions in interrupt context.
+ * Hardware_lock locked upon entry
+ **/
+static void qla4xxx_process_response_queue(struct scsi_qla_host * ha)
+{
+       uint32_t count = 0;
+       struct srb *srb = NULL;
+       struct status_entry *sts_entry;
+
+       /* Process all responses from response queue */
+       while ((ha->response_in =
+               (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in)) !=
+              ha->response_out) {
+               sts_entry = (struct status_entry *) ha->response_ptr;
+               count++;
+
+               /* Advance pointers for next entry */
+               if (ha->response_out == (RESPONSE_QUEUE_DEPTH - 1)) {
+                       ha->response_out = 0;
+                       ha->response_ptr = ha->response_ring;
+               } else {
+                       ha->response_out++;
+                       ha->response_ptr++;
+               }
+
+               /* process entry */
+               switch (sts_entry->hdr.entryType) {
+               case ET_STATUS:
+                       /*
+                        * Common status - Single completion posted in single
+                        * IOSB.
+                        */
+                       qla4xxx_status_entry(ha, sts_entry);
+                       break;
+
+               case ET_PASSTHRU_STATUS:
+                       break;
+
+               case ET_STATUS_CONTINUATION:
+                       /* Just throw away the status continuation entries */
+                       DEBUG2(printk("scsi%ld: %s: Status Continuation entry "
+                                     "- ignoring\n", ha->host_no, __func__));
+                       break;
+
+               case ET_COMMAND:
+                       /* ISP device queue is full. Command not
+                        * accepted by ISP.  Queue command for
+                        * later */
+
+                       srb = qla4xxx_del_from_active_array(ha,
+                                                   le32_to_cpu(sts_entry->
+                                                               handle));
+                       if (srb == NULL)
+                               goto exit_prq_invalid_handle;
+
+                       DEBUG2(printk("scsi%ld: %s: FW device queue full, "
+                                     "srb %p\n", ha->host_no, __func__, srb));
+
+                       /* ETRY normally by sending it back with
+                        * DID_BUS_BUSY */
+                       srb->cmd->result = DID_BUS_BUSY << 16;
+                       qla4xxx_srb_compl(ha, srb);
+                       break;
+
+               case ET_CONTINUE:
+                       /* Just throw away the continuation entries */
+                       DEBUG2(printk("scsi%ld: %s: Continuation entry - "
+                                     "ignoring\n", ha->host_no, __func__));
+                       break;
+
+               default:
+                       /*
+                        * Invalid entry in response queue, reset RISC
+                        * firmware.
+                        */
+                       DEBUG2(printk("scsi%ld: %s: Invalid entry %x in "
+                                     "response queue \n", ha->host_no,
+                                     __func__,
+                                     sts_entry->hdr.entryType));
+                       goto exit_prq_error;
+               }
+       }
+
+       /*
+        * Done with responses, update the ISP For QLA4010, this also clears
+        * the interrupt.
+        */
+       writel(ha->response_out, &ha->reg->rsp_q_out);
+       readl(&ha->reg->rsp_q_out);
+
+       return;
+
+exit_prq_invalid_handle:
+       DEBUG2(printk("scsi%ld: %s: Invalid handle(srb)=%p type=%x IOCS=%x\n",
+                     ha->host_no, __func__, srb, sts_entry->hdr.entryType,
+                     sts_entry->completionStatus));
+
+exit_prq_error:
+       writel(ha->response_out, &ha->reg->rsp_q_out);
+       readl(&ha->reg->rsp_q_out);
+
+       set_bit(DPC_RESET_HA, &ha->dpc_flags);
+}
+
+/**
+ * qla4xxx_isr_decode_mailbox - decodes mailbox status
+ * @ha: Pointer to host adapter structure.
+ * @mailbox_status: Mailbox status.
+ *
+ * This routine decodes the mailbox status during the ISR.
+ * Hardware_lock locked upon entry. runs in interrupt context.
+ **/
+static void qla4xxx_isr_decode_mailbox(struct scsi_qla_host * ha,
+                                      uint32_t mbox_status)
+{
+       int i;
+
+       if ((mbox_status == MBOX_STS_BUSY) ||
+           (mbox_status == MBOX_STS_INTERMEDIATE_COMPLETION) ||
+           (mbox_status >> 12 == MBOX_COMPLETION_STATUS)) {
+               ha->mbox_status[0] = mbox_status;
+
+               if (test_bit(AF_MBOX_COMMAND, &ha->flags)) {
+                       /*
+                        * Copy all mailbox registers to a temporary
+                        * location and set mailbox command done flag
+                        */
+                       for (i = 1; i < ha->mbox_status_count; i++)
+                               ha->mbox_status[i] =
+                                       readl(&ha->reg->mailbox[i]);
+
+                       set_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
+                       wake_up(&ha->mailbox_wait_queue);
+               }
+       } else if (mbox_status >> 12 == MBOX_ASYNC_EVENT_STATUS) {
+               /* Immediately process the AENs that don't require much work.
+                * Only queue the database_changed AENs */
+               switch (mbox_status) {
+               case MBOX_ASTS_SYSTEM_ERROR:
+                       /* Log Mailbox registers */
+                       if (ql4xdontresethba) {
+                               DEBUG2(printk("%s:Dont Reset HBA\n",
+                                             __func__));
+                       } else {
+                               set_bit(AF_GET_CRASH_RECORD, &ha->flags);
+                               set_bit(DPC_RESET_HA, &ha->dpc_flags);
+                       }
+                       break;
+
+               case MBOX_ASTS_REQUEST_TRANSFER_ERROR:
+               case MBOX_ASTS_RESPONSE_TRANSFER_ERROR:
+               case MBOX_ASTS_NVRAM_INVALID:
+               case MBOX_ASTS_IP_ADDRESS_CHANGED:
+               case MBOX_ASTS_DHCP_LEASE_EXPIRED:
+                       DEBUG2(printk("scsi%ld: AEN %04x, ERROR Status, "
+                                     "Reset HA\n", ha->host_no, mbox_status));
+                       set_bit(DPC_RESET_HA, &ha->dpc_flags);
+                       break;
+
+               case MBOX_ASTS_LINK_UP:
+                       DEBUG2(printk("scsi%ld: AEN %04x Adapter LINK UP\n",
+                                     ha->host_no, mbox_status));
+                       set_bit(AF_LINK_UP, &ha->flags);
+                       break;
+
+               case MBOX_ASTS_LINK_DOWN:
+                       DEBUG2(printk("scsi%ld: AEN %04x Adapter LINK DOWN\n",
+                                     ha->host_no, mbox_status));
+                       clear_bit(AF_LINK_UP, &ha->flags);
+                       break;
+
+               case MBOX_ASTS_HEARTBEAT:
+                       ha->seconds_since_last_heartbeat = 0;
+                       break;
+
+               case MBOX_ASTS_DHCP_LEASE_ACQUIRED:
+                       DEBUG2(printk("scsi%ld: AEN %04x DHCP LEASE "
+                                     "ACQUIRED\n", ha->host_no, mbox_status));
+                       set_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags);
+                       break;
+
+               case MBOX_ASTS_PROTOCOL_STATISTIC_ALARM:
+               case MBOX_ASTS_SCSI_COMMAND_PDU_REJECTED: /* Target
+                                                          * mode
+                                                          * only */
+               case MBOX_ASTS_UNSOLICITED_PDU_RECEIVED:  /* Connection mode */
+               case MBOX_ASTS_IPSEC_SYSTEM_FATAL_ERROR:
+               case MBOX_ASTS_SUBNET_STATE_CHANGE:
+                       /* No action */
+                       DEBUG2(printk("scsi%ld: AEN %04x\n", ha->host_no,
+                                     mbox_status));
+                       break;
+
+               case MBOX_ASTS_MAC_ADDRESS_CHANGED:
+               case MBOX_ASTS_DNS:
+                       /* No action */
+                       DEBUG2(printk(KERN_INFO "scsi%ld: AEN %04x, "
+                                     "mbox_sts[1]=%04x, mbox_sts[2]=%04x\n",
+                                     ha->host_no, mbox_status,
+                                     readl(&ha->reg->mailbox[1]),
+                                     readl(&ha->reg->mailbox[2])));
+                       break;
+
+               case MBOX_ASTS_SELF_TEST_FAILED:
+               case MBOX_ASTS_LOGIN_FAILED:
+                       /* No action */
+                       DEBUG2(printk("scsi%ld: AEN %04x, mbox_sts[1]=%04x, "
+                                     "mbox_sts[2]=%04x, mbox_sts[3]=%04x\n",
+                                     ha->host_no, mbox_status,
+                                     readl(&ha->reg->mailbox[1]),
+                                     readl(&ha->reg->mailbox[2]),
+                                     readl(&ha->reg->mailbox[3])));
+                       break;
+
+               case MBOX_ASTS_DATABASE_CHANGED:
+                       /* Queue AEN information and process it in the DPC
+                        * routine */
+                       if (ha->aen_q_count > 0) {
+                               /* advance pointer */
+                               if (ha->aen_in == (MAX_AEN_ENTRIES - 1))
+                                       ha->aen_in = 0;
+                               else
+                                       ha->aen_in++;
+
+                               /* decrement available counter */
+                               ha->aen_q_count--;
+
+                               for (i = 1; i < MBOX_AEN_REG_COUNT; i++)
+                                       ha->aen_q[ha->aen_in].mbox_sts[i] =
+                                               readl(&ha->reg->mailbox[i]);
+
+                               ha->aen_q[ha->aen_in].mbox_sts[0] = mbox_status;
+
+                               /* print debug message */
+                               DEBUG2(printk("scsi%ld: AEN[%d] %04x queued"
+                                             " mb1:0x%x mb2:0x%x mb3:0x%x mb4:0x%x\n",
+                                             ha->host_no, ha->aen_in,
+                                             mbox_status,
+                                             ha->aen_q[ha->aen_in].mbox_sts[1],
+                                             ha->aen_q[ha->aen_in].mbox_sts[2],
+                                             ha->aen_q[ha->aen_in].mbox_sts[3],
+                                             ha->aen_q[ha->aen_in].  mbox_sts[4]));
+
+                               /* The DPC routine will process the aen */
+                               set_bit(DPC_AEN, &ha->dpc_flags);
+                       } else {
+                               DEBUG2(printk("scsi%ld: %s: aen %04x, queue "
+                                             "overflowed!  AEN LOST!!\n",
+                                             ha->host_no, __func__,
+                                             mbox_status));
+
+                               DEBUG2(printk("scsi%ld: DUMP AEN QUEUE\n",
+                                             ha->host_no));
+
+                               for (i = 0; i < MAX_AEN_ENTRIES; i++) {
+                                       DEBUG2(printk("AEN[%d] %04x %04x %04x "
+                                                     "%04x\n", i,
+                                                     ha->aen_q[i].mbox_sts[0],
+                                                     ha->aen_q[i].mbox_sts[1],
+                                                     ha->aen_q[i].mbox_sts[2],
+                                                     ha->aen_q[i].mbox_sts[3]));
+                               }
+                       }
+                       break;
+
+               default:
+                       DEBUG2(printk(KERN_WARNING
+                                     "scsi%ld: AEN %04x UNKNOWN\n",
+                                     ha->host_no, mbox_status));
+                       break;
+               }
+       } else {
+               DEBUG2(printk("scsi%ld: Unknown mailbox status %08X\n",
+                             ha->host_no, mbox_status));
+
+               ha->mbox_status[0] = mbox_status;
+       }
+}
+
+/**
+ * qla4xxx_interrupt_service_routine - isr
+ * @ha: pointer to host adapter structure.
+ *
+ * This is the main interrupt service routine.
+ * hardware_lock locked upon entry. runs in interrupt context.
+ **/
+void qla4xxx_interrupt_service_routine(struct scsi_qla_host * ha,
+                                      uint32_t intr_status)
+{
+       /* Process response queue interrupt. */
+       if (intr_status & CSR_SCSI_COMPLETION_INTR)
+               qla4xxx_process_response_queue(ha);
+
+       /* Process mailbox/asynch event  interrupt.*/
+       if (intr_status & CSR_SCSI_PROCESSOR_INTR) {
+               qla4xxx_isr_decode_mailbox(ha,
+                                          readl(&ha->reg->mailbox[0]));
+
+               /* Clear Mailbox Interrupt */
+               writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
+                      &ha->reg->ctrl_status);
+               readl(&ha->reg->ctrl_status);
+       }
+}
+
+/**
+ * qla4xxx_intr_handler - hardware interrupt handler.
+ * @irq: Unused
+ * @dev_id: Pointer to host adapter structure
+ * @regs: Unused
+ **/
+irqreturn_t qla4xxx_intr_handler(int irq, void *dev_id, struct pt_regs *regs)
+{
+       struct scsi_qla_host *ha;
+       uint32_t intr_status;
+       unsigned long flags = 0;
+       uint8_t reqs_count = 0;
+
+       ha = (struct scsi_qla_host *) dev_id;
+       if (!ha) {
+               DEBUG2(printk(KERN_INFO
+                             "qla4xxx: Interrupt with NULL host ptr\n"));
+               return IRQ_NONE;
+       }
+
+       spin_lock_irqsave(&ha->hardware_lock, flags);
+
+       /*
+        * Repeatedly service interrupts up to a maximum of
+        * MAX_REQS_SERVICED_PER_INTR
+        */
+       while (1) {
+               /*
+                * Read interrupt status
+                */
+               if (le32_to_cpu(ha->shadow_regs->rsp_q_in) !=
+                   ha->response_out)
+                       intr_status = CSR_SCSI_COMPLETION_INTR;
+               else
+                       intr_status = readl(&ha->reg->ctrl_status);
+
+               if ((intr_status &
+                    (CSR_SCSI_RESET_INTR|CSR_FATAL_ERROR|INTR_PENDING)) ==
+                   0) {
+                       if (reqs_count == 0)
+                               ha->spurious_int_count++;
+                       break;
+               }
+
+               if (intr_status & CSR_FATAL_ERROR) {
+                       DEBUG2(printk(KERN_INFO "scsi%ld: Fatal Error, "
+                                     "Status 0x%04x\n", ha->host_no,
+                                     readl(isp_port_error_status (ha))));
+
+                       /* Issue Soft Reset to clear this error condition.
+                        * This will prevent the RISC from repeatedly
+                        * interrupting the driver; thus, allowing the DPC to
+                        * get scheduled to continue error recovery.
+                        * NOTE: Disabling RISC interrupts does not work in
+                        * this case, as CSR_FATAL_ERROR overrides
+                        * CSR_SCSI_INTR_ENABLE */
+                       if ((readl(&ha->reg->ctrl_status) &
+                            CSR_SCSI_RESET_INTR) == 0) {
+                               writel(set_rmask(CSR_SOFT_RESET),
+                                      &ha->reg->ctrl_status);
+                               readl(&ha->reg->ctrl_status);
+                       }
+
+                       writel(set_rmask(CSR_FATAL_ERROR),
+                              &ha->reg->ctrl_status);
+                       readl(&ha->reg->ctrl_status);
+
+                       __qla4xxx_disable_intrs(ha);
+
+                       set_bit(DPC_RESET_HA, &ha->dpc_flags);
+
+                       break;
+               } else if (intr_status & CSR_SCSI_RESET_INTR) {
+                       clear_bit(AF_ONLINE, &ha->flags);
+                       __qla4xxx_disable_intrs(ha);
+
+                       writel(set_rmask(CSR_SCSI_RESET_INTR),
+                              &ha->reg->ctrl_status);
+                       readl(&ha->reg->ctrl_status);
+
+                       set_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
+
+                       break;
+               } else if (intr_status & INTR_PENDING) {
+                       qla4xxx_interrupt_service_routine(ha, intr_status);
+                       ha->total_io_count++;
+                       if (++reqs_count == MAX_REQS_SERVICED_PER_INTR)
+                               break;
+
+                       intr_status = 0;
+               }
+       }
+
+       spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+       return IRQ_HANDLED;
+}
+
+/**
+ * qla4xxx_process_aen - processes AENs generated by firmware
+ * @ha: pointer to host adapter structure.
+ * @process_aen: type of AENs to process
+ *
+ * Processes specific types of Asynchronous Events generated by firmware.
+ * The type of AENs to process is specified by process_aen and can be
+ *     PROCESS_ALL_AENS         0
+ *     FLUSH_DDB_CHANGED_AENS   1
+ *     RELOGIN_DDB_CHANGED_AENS 2
+ **/
+void qla4xxx_process_aen(struct scsi_qla_host * ha, uint8_t process_aen)
+{
+       uint32_t mbox_sts[MBOX_AEN_REG_COUNT];
+       struct aen *aen;
+       int i;
+       unsigned long flags;
+
+       spin_lock_irqsave(&ha->hardware_lock, flags);
+       while (ha->aen_out != ha->aen_in) {
+               /* Advance pointers for next entry */
+               if (ha->aen_out == (MAX_AEN_ENTRIES - 1))
+                       ha->aen_out = 0;
+               else
+                       ha->aen_out++;
+
+               ha->aen_q_count++;
+               aen = &ha->aen_q[ha->aen_out];
+
+               /* copy aen information to local structure */
+               for (i = 0; i < MBOX_AEN_REG_COUNT; i++)
+                       mbox_sts[i] = aen->mbox_sts[i];
+
+               spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+               DEBUG(printk("scsi%ld: AEN[%d] %04x, index [%d] state=%04x "
+                            "mod=%x conerr=%08x \n", ha->host_no, ha->aen_out,
+                            mbox_sts[0], mbox_sts[2], mbox_sts[3],
+                            mbox_sts[1], mbox_sts[4]));
+
+               switch (mbox_sts[0]) {
+               case MBOX_ASTS_DATABASE_CHANGED:
+                       if (process_aen == FLUSH_DDB_CHANGED_AENS) {
+                               DEBUG2(printk("scsi%ld: AEN[%d] %04x, index "
+                                             "[%d] state=%04x FLUSHED!\n",
+                                             ha->host_no, ha->aen_out,
+                                             mbox_sts[0], mbox_sts[2],
+                                             mbox_sts[3]));
+                               break;
+                       } else if (process_aen == RELOGIN_DDB_CHANGED_AENS) {
+                               /* for use during init time, we only want to
+                                * relogin non-active ddbs */
+                               struct ddb_entry *ddb_entry;
+
+                               ddb_entry =
+                                       /* FIXME: name length? */
+                                       qla4xxx_lookup_ddb_by_fw_index(ha,
+                                                                      mbox_sts[2]);
+                               if (!ddb_entry)
+                                       break;
+
+                               ddb_entry->dev_scan_wait_to_complete_relogin =
+                                       0;
+                               ddb_entry->dev_scan_wait_to_start_relogin =
+                                       jiffies +
+                                       ((ddb_entry->default_time2wait +
+                                         4) * HZ);
+
+                               DEBUG2(printk("scsi%ld: ddb index [%d] initate"
+                                             " RELOGIN after %d seconds\n",
+                                             ha->host_no,
+                                             ddb_entry->fw_ddb_index,
+                                             ddb_entry->default_time2wait +
+                                             4));
+                               break;
+                       }
+
+                       if (mbox_sts[1] == 0) { /* Global DB change. */
+                               qla4xxx_reinitialize_ddb_list(ha);
+                       } else if (mbox_sts[1] == 1) {  /* Specific device. */
+                               qla4xxx_process_ddb_changed(ha, mbox_sts[2],
+                                                           mbox_sts[3]);
+                       }
+                       break;
+               }
+               spin_lock_irqsave(&ha->hardware_lock, flags);
+       }
+       spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+}
+
diff --git a/drivers/scsi/qla4xxx/ql4_mbx.c b/drivers/scsi/qla4xxx/ql4_mbx.c
new file mode 100644 (file)
index 0000000..ed977f7
--- /dev/null
@@ -0,0 +1,930 @@
+/*
+ * QLogic iSCSI HBA Driver
+ * Copyright (c)  2003-2006 QLogic Corporation
+ *
+ * See LICENSE.qla4xxx for copyright and licensing details.
+ */
+
+#include "ql4_def.h"
+
+
+/**
+ * qla4xxx_mailbox_command - issues mailbox commands
+ * @ha: Pointer to host adapter structure.
+ * @inCount: number of mailbox registers to load.
+ * @outCount: number of mailbox registers to return.
+ * @mbx_cmd: data pointer for mailbox in registers.
+ * @mbx_sts: data pointer for mailbox out registers.
+ *
+ * This routine sssue mailbox commands and waits for completion.
+ * If outCount is 0, this routine completes successfully WITHOUT waiting
+ * for the mailbox command to complete.
+ **/
+int qla4xxx_mailbox_command(struct scsi_qla_host *ha, uint8_t inCount,
+                           uint8_t outCount, uint32_t *mbx_cmd,
+                           uint32_t *mbx_sts)
+{
+       int status = QLA_ERROR;
+       uint8_t i;
+       u_long wait_count;
+       uint32_t intr_status;
+       unsigned long flags = 0;
+       DECLARE_WAITQUEUE(wait, current);
+
+       mutex_lock(&ha->mbox_sem);
+
+       /* Mailbox code active */
+       set_bit(AF_MBOX_COMMAND, &ha->flags);
+
+       /* Make sure that pointers are valid */
+       if (!mbx_cmd || !mbx_sts) {
+               DEBUG2(printk("scsi%ld: %s: Invalid mbx_cmd or mbx_sts "
+                             "pointer\n", ha->host_no, __func__));
+               goto mbox_exit;
+       }
+
+       /* To prevent overwriting mailbox registers for a command that has
+        * not yet been serviced, check to see if a previously issued
+        * mailbox command is interrupting.
+        * -----------------------------------------------------------------
+        */
+       spin_lock_irqsave(&ha->hardware_lock, flags);
+       intr_status = readl(&ha->reg->ctrl_status);
+       if (intr_status & CSR_SCSI_PROCESSOR_INTR) {
+               /* Service existing interrupt */
+               qla4xxx_interrupt_service_routine(ha, intr_status);
+               clear_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
+       }
+
+       /* Send the mailbox command to the firmware */
+       ha->mbox_status_count = outCount;
+       for (i = 0; i < outCount; i++)
+               ha->mbox_status[i] = 0;
+
+       /* Load all mailbox registers, except mailbox 0. */
+       for (i = 1; i < inCount; i++)
+               writel(mbx_cmd[i], &ha->reg->mailbox[i]);
+
+       /* Wakeup firmware  */
+       writel(mbx_cmd[0], &ha->reg->mailbox[0]);
+       readl(&ha->reg->mailbox[0]);
+       writel(set_rmask(CSR_INTR_RISC), &ha->reg->ctrl_status);
+       readl(&ha->reg->ctrl_status);
+       spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+       /* Wait for completion */
+       set_current_state(TASK_UNINTERRUPTIBLE);
+       add_wait_queue(&ha->mailbox_wait_queue, &wait);
+
+       /*
+        * If we don't want status, don't wait for the mailbox command to
+        * complete.  For example, MBOX_CMD_RESET_FW doesn't return status,
+        * you must poll the inbound Interrupt Mask for completion.
+        */
+       if (outCount == 0) {
+               status = QLA_SUCCESS;
+               set_current_state(TASK_RUNNING);
+               remove_wait_queue(&ha->mailbox_wait_queue, &wait);
+               goto mbox_exit;
+       }
+       /* Wait for command to complete */
+       wait_count = jiffies + MBOX_TOV * HZ;
+       while (test_bit(AF_MBOX_COMMAND_DONE, &ha->flags) == 0) {
+               if (time_after_eq(jiffies, wait_count))
+                       break;
+
+               spin_lock_irqsave(&ha->hardware_lock, flags);
+               intr_status = readl(&ha->reg->ctrl_status);
+               if (intr_status & INTR_PENDING) {
+                       /*
+                        * Service the interrupt.
+                        * The ISR will save the mailbox status registers
+                        * to a temporary storage location in the adapter
+                        * structure.
+                        */
+                       ha->mbox_status_count = outCount;
+                       qla4xxx_interrupt_service_routine(ha, intr_status);
+               }
+               spin_unlock_irqrestore(&ha->hardware_lock, flags);
+               msleep(10);
+       }
+       set_current_state(TASK_RUNNING);
+       remove_wait_queue(&ha->mailbox_wait_queue, &wait);
+
+       /* Check for mailbox timeout. */
+       if (!test_bit(AF_MBOX_COMMAND_DONE, &ha->flags)) {
+               DEBUG2(printk("scsi%ld: Mailbox Cmd 0x%08X timed out ...,"
+                             " Scheduling Adapter Reset\n", ha->host_no,
+                             mbx_cmd[0]));
+               ha->mailbox_timeout_count++;
+               mbx_sts[0] = (-1);
+               set_bit(DPC_RESET_HA, &ha->dpc_flags);
+               goto mbox_exit;
+       }
+
+       /*
+        * Copy the mailbox out registers to the caller's mailbox in/out
+        * structure.
+        */
+       spin_lock_irqsave(&ha->hardware_lock, flags);
+       for (i = 0; i < outCount; i++)
+               mbx_sts[i] = ha->mbox_status[i];
+
+       /* Set return status and error flags (if applicable). */
+       switch (ha->mbox_status[0]) {
+       case MBOX_STS_COMMAND_COMPLETE:
+               status = QLA_SUCCESS;
+               break;
+
+       case MBOX_STS_INTERMEDIATE_COMPLETION:
+               status = QLA_SUCCESS;
+               break;
+
+       case MBOX_STS_BUSY:
+               DEBUG2( printk("scsi%ld: %s: Cmd = %08X, ISP BUSY\n",
+                              ha->host_no, __func__, mbx_cmd[0]));
+               ha->mailbox_timeout_count++;
+               break;
+
+       default:
+               DEBUG2(printk("scsi%ld: %s: **** FAILED, cmd = %08X, "
+                             "sts = %08X ****\n", ha->host_no, __func__,
+                             mbx_cmd[0], mbx_sts[0]));
+               break;
+       }
+       spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+mbox_exit:
+       clear_bit(AF_MBOX_COMMAND, &ha->flags);
+       clear_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
+       mutex_unlock(&ha->mbox_sem);
+
+       return status;
+}
+
+
+/**
+ * qla4xxx_issue_iocb - issue mailbox iocb command
+ * @ha: adapter state pointer.
+ * @buffer: buffer pointer.
+ * @phys_addr: physical address of buffer.
+ * @size: size of buffer.
+ *
+ * Issues iocbs via mailbox commands.
+ * TARGET_QUEUE_LOCK must be released.
+ * ADAPTER_STATE_LOCK must be released.
+ **/
+int
+qla4xxx_issue_iocb(struct scsi_qla_host * ha, void *buffer,
+                  dma_addr_t phys_addr, size_t size)
+{
+       uint32_t mbox_cmd[MBOX_REG_COUNT];
+       uint32_t mbox_sts[MBOX_REG_COUNT];
+       int status;
+
+       memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+       memset(&mbox_sts, 0, sizeof(mbox_sts));
+       mbox_cmd[0] = MBOX_CMD_EXECUTE_IOCB_A64;
+       mbox_cmd[1] = 0;
+       mbox_cmd[2] = LSDW(phys_addr);
+       mbox_cmd[3] = MSDW(phys_addr);
+       status = qla4xxx_mailbox_command(ha, 4, 1, &mbox_cmd[0], &mbox_sts[0]);
+       return status;
+}
+
+int qla4xxx_conn_close_sess_logout(struct scsi_qla_host * ha,
+                                  uint16_t fw_ddb_index,
+                                  uint16_t connection_id,
+                                  uint16_t option)
+{
+       uint32_t mbox_cmd[MBOX_REG_COUNT];
+       uint32_t mbox_sts[MBOX_REG_COUNT];
+
+       memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+       memset(&mbox_sts, 0, sizeof(mbox_sts));
+       mbox_cmd[0] = MBOX_CMD_CONN_CLOSE_SESS_LOGOUT;
+       mbox_cmd[1] = fw_ddb_index;
+       mbox_cmd[2] = connection_id;
+       mbox_cmd[3] = LOGOUT_OPTION_RELOGIN;
+       if (qla4xxx_mailbox_command(ha, 4, 2, &mbox_cmd[0], &mbox_sts[0]) !=
+           QLA_SUCCESS) {
+               DEBUG2(printk("scsi%ld: %s: MBOX_CMD_CONN_CLOSE_SESS_LOGOUT "
+                             "option %04x failed sts %04X %04X",
+                             ha->host_no, __func__,
+                             option, mbox_sts[0], mbox_sts[1]));
+               if (mbox_sts[0] == 0x4005)
+                       DEBUG2(printk("%s reason %04X\n", __func__,
+                                     mbox_sts[1]));
+       }
+       return QLA_SUCCESS;
+}
+
+int qla4xxx_clear_database_entry(struct scsi_qla_host * ha,
+                                uint16_t fw_ddb_index)
+{
+       uint32_t mbox_cmd[MBOX_REG_COUNT];
+       uint32_t mbox_sts[MBOX_REG_COUNT];
+
+       memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+       memset(&mbox_sts, 0, sizeof(mbox_sts));
+       mbox_cmd[0] = MBOX_CMD_CLEAR_DATABASE_ENTRY;
+       mbox_cmd[1] = fw_ddb_index;
+       if (qla4xxx_mailbox_command(ha, 2, 5, &mbox_cmd[0], &mbox_sts[0]) !=
+           QLA_SUCCESS)
+               return QLA_ERROR;
+
+       return QLA_SUCCESS;
+}
+
+/**
+ * qla4xxx_initialize_fw_cb - initializes firmware control block.
+ * @ha: Pointer to host adapter structure.
+ **/
+int qla4xxx_initialize_fw_cb(struct scsi_qla_host * ha)
+{
+       struct init_fw_ctrl_blk *init_fw_cb;
+       dma_addr_t init_fw_cb_dma;
+       uint32_t mbox_cmd[MBOX_REG_COUNT];
+       uint32_t mbox_sts[MBOX_REG_COUNT];
+       int status = QLA_ERROR;
+
+       init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
+                                       sizeof(struct init_fw_ctrl_blk),
+                                       &init_fw_cb_dma, GFP_KERNEL);
+       if (init_fw_cb == NULL) {
+               DEBUG2(printk("scsi%ld: %s: Unable to alloc init_cb\n",
+                             ha->host_no, __func__));
+               return 10;
+       }
+       memset(init_fw_cb, 0, sizeof(struct init_fw_ctrl_blk));
+
+       /* Get Initialize Firmware Control Block. */
+       memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+       memset(&mbox_sts, 0, sizeof(mbox_sts));
+       mbox_cmd[0] = MBOX_CMD_GET_INIT_FW_CTRL_BLOCK;
+       mbox_cmd[2] = LSDW(init_fw_cb_dma);
+       mbox_cmd[3] = MSDW(init_fw_cb_dma);
+       if (qla4xxx_mailbox_command(ha, 4, 1, &mbox_cmd[0], &mbox_sts[0]) !=
+           QLA_SUCCESS) {
+               dma_free_coherent(&ha->pdev->dev,
+                                 sizeof(struct init_fw_ctrl_blk),
+                                 init_fw_cb, init_fw_cb_dma);
+               return status;
+       }
+
+       /* Initialize request and response queues. */
+       qla4xxx_init_rings(ha);
+
+       /* Fill in the request and response queue information. */
+       init_fw_cb->ReqQConsumerIndex = cpu_to_le16(ha->request_out);
+       init_fw_cb->ComplQProducerIndex = cpu_to_le16(ha->response_in);
+       init_fw_cb->ReqQLen = __constant_cpu_to_le16(REQUEST_QUEUE_DEPTH);
+       init_fw_cb->ComplQLen = __constant_cpu_to_le16(RESPONSE_QUEUE_DEPTH);
+       init_fw_cb->ReqQAddrLo = cpu_to_le32(LSDW(ha->request_dma));
+       init_fw_cb->ReqQAddrHi = cpu_to_le32(MSDW(ha->request_dma));
+       init_fw_cb->ComplQAddrLo = cpu_to_le32(LSDW(ha->response_dma));
+       init_fw_cb->ComplQAddrHi = cpu_to_le32(MSDW(ha->response_dma));
+       init_fw_cb->ShadowRegBufAddrLo =
+               cpu_to_le32(LSDW(ha->shadow_regs_dma));
+       init_fw_cb->ShadowRegBufAddrHi =
+               cpu_to_le32(MSDW(ha->shadow_regs_dma));
+
+       /* Set up required options. */
+       init_fw_cb->FwOptions |=
+               __constant_cpu_to_le16(FWOPT_SESSION_MODE |
+                                      FWOPT_INITIATOR_MODE);
+       init_fw_cb->FwOptions &= __constant_cpu_to_le16(~FWOPT_TARGET_MODE);
+
+       /* Save some info in adapter structure. */
+       ha->firmware_options = le16_to_cpu(init_fw_cb->FwOptions);
+       ha->tcp_options = le16_to_cpu(init_fw_cb->TCPOptions);
+       ha->heartbeat_interval = init_fw_cb->HeartbeatInterval;
+       memcpy(ha->ip_address, init_fw_cb->IPAddr,
+              min(sizeof(ha->ip_address), sizeof(init_fw_cb->IPAddr)));
+       memcpy(ha->subnet_mask, init_fw_cb->SubnetMask,
+              min(sizeof(ha->subnet_mask), sizeof(init_fw_cb->SubnetMask)));
+       memcpy(ha->gateway, init_fw_cb->GatewayIPAddr,
+              min(sizeof(ha->gateway), sizeof(init_fw_cb->GatewayIPAddr)));
+       memcpy(ha->name_string, init_fw_cb->iSCSINameString,
+              min(sizeof(ha->name_string),
+                  sizeof(init_fw_cb->iSCSINameString)));
+       memcpy(ha->alias, init_fw_cb->Alias,
+              min(sizeof(ha->alias), sizeof(init_fw_cb->Alias)));
+
+       /* Save Command Line Paramater info */
+       ha->port_down_retry_count = le16_to_cpu(init_fw_cb->KeepAliveTimeout);
+       ha->discovery_wait = ql4xdiscoverywait;
+
+       /* Send Initialize Firmware Control Block. */
+       mbox_cmd[0] = MBOX_CMD_INITIALIZE_FIRMWARE;
+       mbox_cmd[1] = 0;
+       mbox_cmd[2] = LSDW(init_fw_cb_dma);
+       mbox_cmd[3] = MSDW(init_fw_cb_dma);
+       if (qla4xxx_mailbox_command(ha, 4, 1, &mbox_cmd[0], &mbox_sts[0]) ==
+           QLA_SUCCESS)
+               status = QLA_SUCCESS;
+        else {
+               DEBUG2(printk("scsi%ld: %s: MBOX_CMD_INITIALIZE_FIRMWARE "
+                             "failed w/ status %04X\n", ha->host_no, __func__,
+                             mbox_sts[0]));
+       }
+       dma_free_coherent(&ha->pdev->dev, sizeof(struct init_fw_ctrl_blk),
+                         init_fw_cb, init_fw_cb_dma);
+
+       return status;
+}
+
+/**
+ * qla4xxx_get_dhcp_ip_address - gets HBA ip address via DHCP
+ * @ha: Pointer to host adapter structure.
+ **/
+int qla4xxx_get_dhcp_ip_address(struct scsi_qla_host * ha)
+{
+       struct init_fw_ctrl_blk *init_fw_cb;
+       dma_addr_t init_fw_cb_dma;
+       uint32_t mbox_cmd[MBOX_REG_COUNT];
+       uint32_t mbox_sts[MBOX_REG_COUNT];
+
+       init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
+                                       sizeof(struct init_fw_ctrl_blk),
+                                       &init_fw_cb_dma, GFP_KERNEL);
+       if (init_fw_cb == NULL) {
+               printk("scsi%ld: %s: Unable to alloc init_cb\n", ha->host_no,
+                      __func__);
+               return 10;
+       }
+
+       /* Get Initialize Firmware Control Block. */
+       memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+       memset(&mbox_sts, 0, sizeof(mbox_sts));
+       memset(init_fw_cb, 0, sizeof(struct init_fw_ctrl_blk));
+       mbox_cmd[0] = MBOX_CMD_GET_INIT_FW_CTRL_BLOCK;
+       mbox_cmd[2] = LSDW(init_fw_cb_dma);
+       mbox_cmd[3] = MSDW(init_fw_cb_dma);
+
+       if (qla4xxx_mailbox_command(ha, 4, 1, &mbox_cmd[0], &mbox_sts[0]) !=
+           QLA_SUCCESS) {
+               DEBUG2(printk("scsi%ld: %s: Failed to get init_fw_ctrl_blk\n",
+                             ha->host_no, __func__));
+               dma_free_coherent(&ha->pdev->dev,
+                                 sizeof(struct init_fw_ctrl_blk),
+                                 init_fw_cb, init_fw_cb_dma);
+               return QLA_ERROR;
+       }
+
+       /* Save IP Address. */
+       memcpy(ha->ip_address, init_fw_cb->IPAddr,
+              min(sizeof(ha->ip_address), sizeof(init_fw_cb->IPAddr)));
+       memcpy(ha->subnet_mask, init_fw_cb->SubnetMask,
+              min(sizeof(ha->subnet_mask), sizeof(init_fw_cb->SubnetMask)));
+       memcpy(ha->gateway, init_fw_cb->GatewayIPAddr,
+              min(sizeof(ha->gateway), sizeof(init_fw_cb->GatewayIPAddr)));
+
+       dma_free_coherent(&ha->pdev->dev, sizeof(struct init_fw_ctrl_blk),
+                         init_fw_cb, init_fw_cb_dma);
+
+       return QLA_SUCCESS;
+}
+
+/**
+ * qla4xxx_get_firmware_state - gets firmware state of HBA
+ * @ha: Pointer to host adapter structure.
+ **/
+int qla4xxx_get_firmware_state(struct scsi_qla_host * ha)
+{
+       uint32_t mbox_cmd[MBOX_REG_COUNT];
+       uint32_t mbox_sts[MBOX_REG_COUNT];
+
+       /* Get firmware version */
+       memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+       memset(&mbox_sts, 0, sizeof(mbox_sts));
+       mbox_cmd[0] = MBOX_CMD_GET_FW_STATE;
+       if (qla4xxx_mailbox_command(ha, 1, 4, &mbox_cmd[0], &mbox_sts[0]) !=
+           QLA_SUCCESS) {
+               DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_FW_STATE failed w/ "
+                             "status %04X\n", ha->host_no, __func__,
+                             mbox_sts[0]));
+               return QLA_ERROR;
+       }
+       ha->firmware_state = mbox_sts[1];
+       ha->board_id = mbox_sts[2];
+       ha->addl_fw_state = mbox_sts[3];
+       DEBUG2(printk("scsi%ld: %s firmware_state=0x%x\n",
+                     ha->host_no, __func__, ha->firmware_state);)
+
+               return QLA_SUCCESS;
+}
+
+/**
+ * qla4xxx_get_firmware_status - retrieves firmware status
+ * @ha: Pointer to host adapter structure.
+ **/
+int qla4xxx_get_firmware_status(struct scsi_qla_host * ha)
+{
+       uint32_t mbox_cmd[MBOX_REG_COUNT];
+       uint32_t mbox_sts[MBOX_REG_COUNT];
+
+       /* Get firmware version */
+       memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+       memset(&mbox_sts, 0, sizeof(mbox_sts));
+       mbox_cmd[0] = MBOX_CMD_GET_FW_STATUS;
+       if (qla4xxx_mailbox_command(ha, 1, 3, &mbox_cmd[0], &mbox_sts[0]) !=
+           QLA_SUCCESS) {
+               DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_FW_STATUS failed w/ "
+                             "status %04X\n", ha->host_no, __func__,
+                             mbox_sts[0]));
+               return QLA_ERROR;
+       }
+
+       /* High-water mark of IOCBs */
+       ha->iocb_hiwat = mbox_sts[2];
+       if (ha->iocb_hiwat > IOCB_HIWAT_CUSHION)
+               ha->iocb_hiwat -= IOCB_HIWAT_CUSHION;
+       else
+               dev_info(&ha->pdev->dev, "WARNING!!!  You have less than %d "
+                          "firmare IOCBs available (%d).\n",
+                          IOCB_HIWAT_CUSHION, ha->iocb_hiwat);
+
+       return QLA_SUCCESS;
+}
+
+/**
+ * qla4xxx_get_fwddb_entry - retrieves firmware ddb entry
+ * @ha: Pointer to host adapter structure.
+ * @fw_ddb_index: Firmware's device database index
+ * @fw_ddb_entry: Pointer to firmware's device database entry structure
+ * @num_valid_ddb_entries: Pointer to number of valid ddb entries
+ * @next_ddb_index: Pointer to next valid device database index
+ * @fw_ddb_device_state: Pointer to device state
+ **/
+int qla4xxx_get_fwddb_entry(struct scsi_qla_host *ha,
+                           uint16_t fw_ddb_index,
+                           struct dev_db_entry *fw_ddb_entry,
+                           dma_addr_t fw_ddb_entry_dma,
+                           uint32_t *num_valid_ddb_entries,
+                           uint32_t *next_ddb_index,
+                           uint32_t *fw_ddb_device_state,
+                           uint32_t *conn_err_detail,
+                           uint16_t *tcp_source_port_num,
+                           uint16_t *connection_id)
+{
+       int status = QLA_ERROR;
+       uint32_t mbox_cmd[MBOX_REG_COUNT];
+       uint32_t mbox_sts[MBOX_REG_COUNT];
+
+       /* Make sure the device index is valid */
+       if (fw_ddb_index >= MAX_DDB_ENTRIES) {
+               DEBUG2(printk("scsi%ld: %s: index [%d] out of range.\n",
+                             ha->host_no, __func__, fw_ddb_index));
+               goto exit_get_fwddb;
+       }
+       memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+       memset(&mbox_sts, 0, sizeof(mbox_sts));
+       mbox_cmd[0] = MBOX_CMD_GET_DATABASE_ENTRY;
+       mbox_cmd[1] = (uint32_t) fw_ddb_index;
+       mbox_cmd[2] = LSDW(fw_ddb_entry_dma);
+       mbox_cmd[3] = MSDW(fw_ddb_entry_dma);
+       if (qla4xxx_mailbox_command(ha, 4, 7, &mbox_cmd[0], &mbox_sts[0]) ==
+           QLA_ERROR) {
+               DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_DATABASE_ENTRY failed"
+                             " with status 0x%04X\n", ha->host_no, __func__,
+                             mbox_sts[0]));
+               goto exit_get_fwddb;
+       }
+       if (fw_ddb_index != mbox_sts[1]) {
+               DEBUG2(printk("scsi%ld: %s: index mismatch [%d] != [%d].\n",
+                             ha->host_no, __func__, fw_ddb_index,
+                             mbox_sts[1]));
+               goto exit_get_fwddb;
+       }
+       if (fw_ddb_entry) {
+               dev_info(&ha->pdev->dev, "DDB[%d] MB0 %04x Tot %d Next %d "
+                          "State %04x ConnErr %08x %d.%d.%d.%d:%04d \"%s\"\n",
+                          fw_ddb_index, mbox_sts[0], mbox_sts[2], mbox_sts[3],
+                          mbox_sts[4], mbox_sts[5], fw_ddb_entry->ipAddr[0],
+                          fw_ddb_entry->ipAddr[1], fw_ddb_entry->ipAddr[2],
+                          fw_ddb_entry->ipAddr[3],
+                          le16_to_cpu(fw_ddb_entry->portNumber),
+                          fw_ddb_entry->iscsiName);
+       }
+       if (num_valid_ddb_entries)
+               *num_valid_ddb_entries = mbox_sts[2];
+       if (next_ddb_index)
+               *next_ddb_index = mbox_sts[3];
+       if (fw_ddb_device_state)
+               *fw_ddb_device_state = mbox_sts[4];
+
+       /*
+        * RA: This mailbox has been changed to pass connection error and
+        * details.  Its true for ISP4010 as per Version E - Not sure when it
+        * was changed.  Get the time2wait from the fw_dd_entry field :
+        * default_time2wait which we call it as minTime2Wait DEV_DB_ENTRY
+        * struct.
+        */
+       if (conn_err_detail)
+               *conn_err_detail = mbox_sts[5];
+       if (tcp_source_port_num)
+               *tcp_source_port_num = (uint16_t) mbox_sts[6] >> 16;
+       if (connection_id)
+               *connection_id = (uint16_t) mbox_sts[6] & 0x00FF;
+       status = QLA_SUCCESS;
+
+exit_get_fwddb:
+       return status;
+}
+
+/**
+ * qla4xxx_set_fwddb_entry - sets a ddb entry.
+ * @ha: Pointer to host adapter structure.
+ * @fw_ddb_index: Firmware's device database index
+ * @fw_ddb_entry: Pointer to firmware's ddb entry structure, or NULL.
+ *
+ * This routine initializes or updates the adapter's device database
+ * entry for the specified device. It also triggers a login for the
+ * specified device. Therefore, it may also be used as a secondary
+ * login routine when a NULL pointer is specified for the fw_ddb_entry.
+ **/
+int qla4xxx_set_ddb_entry(struct scsi_qla_host * ha, uint16_t fw_ddb_index,
+                         dma_addr_t fw_ddb_entry_dma)
+{
+       uint32_t mbox_cmd[MBOX_REG_COUNT];
+       uint32_t mbox_sts[MBOX_REG_COUNT];
+
+       /* Do not wait for completion. The firmware will send us an
+        * ASTS_DATABASE_CHANGED (0x8014) to notify us of the login status.
+        */
+       memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+       memset(&mbox_sts, 0, sizeof(mbox_sts));
+
+       mbox_cmd[0] = MBOX_CMD_SET_DATABASE_ENTRY;
+       mbox_cmd[1] = (uint32_t) fw_ddb_index;
+       mbox_cmd[2] = LSDW(fw_ddb_entry_dma);
+       mbox_cmd[3] = MSDW(fw_ddb_entry_dma);
+       return qla4xxx_mailbox_command(ha, 4, 1, &mbox_cmd[0], &mbox_sts[0]);
+}
+
+int qla4xxx_conn_open_session_login(struct scsi_qla_host * ha,
+                                   uint16_t fw_ddb_index)
+{
+       int status = QLA_ERROR;
+       uint32_t mbox_cmd[MBOX_REG_COUNT];
+       uint32_t mbox_sts[MBOX_REG_COUNT];
+
+       /* Do not wait for completion. The firmware will send us an
+        * ASTS_DATABASE_CHANGED (0x8014) to notify us of the login status.
+        */
+       memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+       memset(&mbox_sts, 0, sizeof(mbox_sts));
+       mbox_cmd[0] = MBOX_CMD_CONN_OPEN_SESS_LOGIN;
+       mbox_cmd[1] = (uint32_t) fw_ddb_index;
+       mbox_cmd[2] = 0;
+       mbox_cmd[3] = 0;
+       mbox_cmd[4] = 0;
+       status = qla4xxx_mailbox_command(ha, 4, 0, &mbox_cmd[0], &mbox_sts[0]);
+       DEBUG2(printk("%s fw_ddb_index=%d status=%d mbx0_1=0x%x :0x%x\n",
+                     __func__, fw_ddb_index, status, mbox_sts[0],
+                     mbox_sts[1]);)
+
+               return status;
+}
+
+/**
+ * qla4xxx_get_crash_record - retrieves crash record.
+ * @ha: Pointer to host adapter structure.
+ *
+ * This routine retrieves a crash record from the QLA4010 after an 8002h aen.
+ **/
+void qla4xxx_get_crash_record(struct scsi_qla_host * ha)
+{
+       uint32_t mbox_cmd[MBOX_REG_COUNT];
+       uint32_t mbox_sts[MBOX_REG_COUNT];
+       struct crash_record *crash_record = NULL;
+       dma_addr_t crash_record_dma = 0;
+       uint32_t crash_record_size = 0;
+       memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+       memset(&mbox_sts, 0, sizeof(mbox_cmd));
+
+       /* Get size of crash record. */
+       mbox_cmd[0] = MBOX_CMD_GET_CRASH_RECORD;
+       if (qla4xxx_mailbox_command(ha, 5, 5, &mbox_cmd[0], &mbox_sts[0]) !=
+           QLA_SUCCESS) {
+               DEBUG2(printk("scsi%ld: %s: ERROR: Unable to retrieve size!\n",
+                             ha->host_no, __func__));
+               goto exit_get_crash_record;
+       }
+       crash_record_size = mbox_sts[4];
+       if (crash_record_size == 0) {
+               DEBUG2(printk("scsi%ld: %s: ERROR: Crash record size is 0!\n",
+                             ha->host_no, __func__));
+               goto exit_get_crash_record;
+       }
+
+       /* Alloc Memory for Crash Record. */
+       crash_record = dma_alloc_coherent(&ha->pdev->dev, crash_record_size,
+                                         &crash_record_dma, GFP_KERNEL);
+       if (crash_record == NULL)
+               goto exit_get_crash_record;
+
+       /* Get Crash Record. */
+       mbox_cmd[0] = MBOX_CMD_GET_CRASH_RECORD;
+       mbox_cmd[2] = LSDW(crash_record_dma);
+       mbox_cmd[3] = MSDW(crash_record_dma);
+       mbox_cmd[4] = crash_record_size;
+       if (qla4xxx_mailbox_command(ha, 5, 5, &mbox_cmd[0], &mbox_sts[0]) !=
+           QLA_SUCCESS)
+               goto exit_get_crash_record;
+
+       /* Dump Crash Record. */
+
+exit_get_crash_record:
+       if (crash_record)
+               dma_free_coherent(&ha->pdev->dev, crash_record_size,
+                                 crash_record, crash_record_dma);
+}
+
+/**
+ * qla4xxx_get_conn_event_log - retrieves connection event log
+ * @ha: Pointer to host adapter structure.
+ **/
+void qla4xxx_get_conn_event_log(struct scsi_qla_host * ha)
+{
+       uint32_t mbox_cmd[MBOX_REG_COUNT];
+       uint32_t mbox_sts[MBOX_REG_COUNT];
+       struct conn_event_log_entry *event_log = NULL;
+       dma_addr_t event_log_dma = 0;
+       uint32_t event_log_size = 0;
+       uint32_t num_valid_entries;
+       uint32_t      oldest_entry = 0;
+       uint32_t        max_event_log_entries;
+       uint8_t         i;
+
+
+       memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+       memset(&mbox_sts, 0, sizeof(mbox_cmd));
+
+       /* Get size of crash record. */
+       mbox_cmd[0] = MBOX_CMD_GET_CONN_EVENT_LOG;
+       if (qla4xxx_mailbox_command(ha, 4, 5, &mbox_cmd[0], &mbox_sts[0]) !=
+           QLA_SUCCESS)
+               goto exit_get_event_log;
+
+       event_log_size = mbox_sts[4];
+       if (event_log_size == 0)
+               goto exit_get_event_log;
+
+       /* Alloc Memory for Crash Record. */
+       event_log = dma_alloc_coherent(&ha->pdev->dev, event_log_size,
+                                      &event_log_dma, GFP_KERNEL);
+       if (event_log == NULL)
+               goto exit_get_event_log;
+
+       /* Get Crash Record. */
+       mbox_cmd[0] = MBOX_CMD_GET_CONN_EVENT_LOG;
+       mbox_cmd[2] = LSDW(event_log_dma);
+       mbox_cmd[3] = MSDW(event_log_dma);
+       if (qla4xxx_mailbox_command(ha, 4, 5, &mbox_cmd[0], &mbox_sts[0]) !=
+           QLA_SUCCESS) {
+               DEBUG2(printk("scsi%ld: %s: ERROR: Unable to retrieve event "
+                             "log!\n", ha->host_no, __func__));
+               goto exit_get_event_log;
+       }
+
+       /* Dump Event Log. */
+       num_valid_entries = mbox_sts[1];
+
+       max_event_log_entries = event_log_size /
+               sizeof(struct conn_event_log_entry);
+
+       if (num_valid_entries > max_event_log_entries)
+               oldest_entry = num_valid_entries % max_event_log_entries;
+
+       DEBUG3(printk("scsi%ld: Connection Event Log Dump (%d entries):\n",
+                     ha->host_no, num_valid_entries));
+
+       if (extended_error_logging == 3) {
+               if (oldest_entry == 0) {
+                       /* Circular Buffer has not wrapped around */
+                       for (i=0; i < num_valid_entries; i++) {
+                               qla4xxx_dump_buffer((uint8_t *)event_log+
+                                                   (i*sizeof(*event_log)),
+                                                   sizeof(*event_log));
+                       }
+               }
+               else {
+                       /* Circular Buffer has wrapped around -
+                        * display accordingly*/
+                       for (i=oldest_entry; i < max_event_log_entries; i++) {
+                               qla4xxx_dump_buffer((uint8_t *)event_log+
+                                                   (i*sizeof(*event_log)),
+                                                   sizeof(*event_log));
+                       }
+                       for (i=0; i < oldest_entry; i++) {
+                               qla4xxx_dump_buffer((uint8_t *)event_log+
+                                                   (i*sizeof(*event_log)),
+                                                   sizeof(*event_log));
+                       }
+               }
+       }
+
+exit_get_event_log:
+       if (event_log)
+               dma_free_coherent(&ha->pdev->dev, event_log_size, event_log,
+                                 event_log_dma);
+}
+
+/**
+ * qla4xxx_reset_lun - issues LUN Reset
+ * @ha: Pointer to host adapter structure.
+ * @db_entry: Pointer to device database entry
+ * @un_entry: Pointer to lun entry structure
+ *
+ * This routine performs a LUN RESET on the specified target/lun.
+ * The caller must ensure that the ddb_entry and lun_entry pointers
+ * are valid before calling this routine.
+ **/
+int qla4xxx_reset_lun(struct scsi_qla_host * ha, struct ddb_entry * ddb_entry,
+                     int lun)
+{
+       uint32_t mbox_cmd[MBOX_REG_COUNT];
+       uint32_t mbox_sts[MBOX_REG_COUNT];
+       int status = QLA_SUCCESS;
+
+       DEBUG2(printk("scsi%ld:%d:%d: lun reset issued\n", ha->host_no,
+                     ddb_entry->os_target_id, lun));
+
+       /*
+        * Send lun reset command to ISP, so that the ISP will return all
+        * outstanding requests with RESET status
+        */
+       memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+       memset(&mbox_sts, 0, sizeof(mbox_sts));
+       mbox_cmd[0] = MBOX_CMD_LUN_RESET;
+       mbox_cmd[1] = ddb_entry->fw_ddb_index;
+       mbox_cmd[2] = lun << 8;
+       mbox_cmd[5] = 0x01;     /* Immediate Command Enable */
+       qla4xxx_mailbox_command(ha, 6, 1, &mbox_cmd[0], &mbox_sts[0]);
+       if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE &&
+           mbox_sts[0] != MBOX_STS_COMMAND_ERROR)
+               status = QLA_ERROR;
+
+       return status;
+}
+
+
+int qla4xxx_get_flash(struct scsi_qla_host * ha, dma_addr_t dma_addr,
+                     uint32_t offset, uint32_t len)
+{
+       uint32_t mbox_cmd[MBOX_REG_COUNT];
+       uint32_t mbox_sts[MBOX_REG_COUNT];
+
+       memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+       memset(&mbox_sts, 0, sizeof(mbox_sts));
+       mbox_cmd[0] = MBOX_CMD_READ_FLASH;
+       mbox_cmd[1] = LSDW(dma_addr);
+       mbox_cmd[2] = MSDW(dma_addr);
+       mbox_cmd[3] = offset;
+       mbox_cmd[4] = len;
+       if (qla4xxx_mailbox_command(ha, 5, 2, &mbox_cmd[0], &mbox_sts[0]) !=
+           QLA_SUCCESS) {
+               DEBUG2(printk("scsi%ld: %s: MBOX_CMD_READ_FLASH, failed w/ "
+                   "status %04X %04X, offset %08x, len %08x\n", ha->host_no,
+                   __func__, mbox_sts[0], mbox_sts[1], offset, len));
+               return QLA_ERROR;
+       }
+       return QLA_SUCCESS;
+}
+
+/**
+ * qla4xxx_get_fw_version - gets firmware version
+ * @ha: Pointer to host adapter structure.
+ *
+ * Retrieves the firmware version on HBA. In QLA4010, mailboxes 2 & 3 may
+ * hold an address for data.  Make sure that we write 0 to those mailboxes,
+ * if unused.
+ **/
+int qla4xxx_get_fw_version(struct scsi_qla_host * ha)
+{
+       uint32_t mbox_cmd[MBOX_REG_COUNT];
+       uint32_t mbox_sts[MBOX_REG_COUNT];
+
+       /* Get firmware version. */
+       memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+       memset(&mbox_sts, 0, sizeof(mbox_sts));
+       mbox_cmd[0] = MBOX_CMD_ABOUT_FW;
+       if (qla4xxx_mailbox_command(ha, 4, 5, &mbox_cmd[0], &mbox_sts[0]) !=
+           QLA_SUCCESS) {
+               DEBUG2(printk("scsi%ld: %s: MBOX_CMD_ABOUT_FW failed w/ "
+                   "status %04X\n", ha->host_no, __func__, mbox_sts[0]));
+               return QLA_ERROR;
+       }
+
+       /* Save firmware version information. */
+       ha->firmware_version[0] = mbox_sts[1];
+       ha->firmware_version[1] = mbox_sts[2];
+       ha->patch_number = mbox_sts[3];
+       ha->build_number = mbox_sts[4];
+
+       return QLA_SUCCESS;
+}
+
+int qla4xxx_get_default_ddb(struct scsi_qla_host *ha, dma_addr_t dma_addr)
+{
+       uint32_t mbox_cmd[MBOX_REG_COUNT];
+       uint32_t mbox_sts[MBOX_REG_COUNT];
+
+       memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+       memset(&mbox_sts, 0, sizeof(mbox_sts));
+
+       mbox_cmd[0] = MBOX_CMD_GET_DATABASE_ENTRY_DEFAULTS;
+       mbox_cmd[2] = LSDW(dma_addr);
+       mbox_cmd[3] = MSDW(dma_addr);
+
+       if (qla4xxx_mailbox_command(ha, 4, 1, &mbox_cmd[0], &mbox_sts[0]) !=
+           QLA_SUCCESS) {
+               DEBUG2(printk("scsi%ld: %s: failed status %04X\n",
+                    ha->host_no, __func__, mbox_sts[0]));
+               return QLA_ERROR;
+       }
+       return QLA_SUCCESS;
+}
+
+int qla4xxx_req_ddb_entry(struct scsi_qla_host *ha, uint32_t *ddb_index)
+{
+       uint32_t mbox_cmd[MBOX_REG_COUNT];
+       uint32_t mbox_sts[MBOX_REG_COUNT];
+
+       memset(&mbox_cmd, 0, sizeof(mbox_cmd));
+       memset(&mbox_sts, 0, sizeof(mbox_sts));
+
+       mbox_cmd[0] = MBOX_CMD_REQUEST_DATABASE_ENTRY;
+       mbox_cmd[1] = MAX_PRST_DEV_DB_ENTRIES;
+
+       if (qla4xxx_mailbox_command(ha, 2, 3, &mbox_cmd[0], &mbox_sts[0]) !=
+           QLA_SUCCESS) {
+               if (mbox_sts[0] == MBOX_STS_COMMAND_ERROR) {
+                       *ddb_index = mbox_sts[2];
+               } else {
+                       DEBUG2(printk("scsi%ld: %s: failed status %04X\n",
+                            ha->host_no, __func__, mbox_sts[0]));
+                       return QLA_ERROR;
+               }
+       } else {
+               *ddb_index = MAX_PRST_DEV_DB_ENTRIES;
+       }
+
+       return QLA_SUCCESS;
+}
+
+
+int qla4xxx_send_tgts(struct scsi_qla_host *ha, char *ip, uint16_t port)
+{
+       struct dev_db_entry *fw_ddb_entry;
+       dma_addr_t fw_ddb_entry_dma;
+       uint32_t ddb_index;
+       int ret_val = QLA_SUCCESS;
+
+
+       fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
+                                         sizeof(*fw_ddb_entry),
+                                         &fw_ddb_entry_dma, GFP_KERNEL);
+       if (!fw_ddb_entry) {
+               DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
+                             ha->host_no, __func__));
+               ret_val = QLA_ERROR;
+               goto qla4xxx_send_tgts_exit;
+       }
+
+       ret_val = qla4xxx_get_default_ddb(ha, fw_ddb_entry_dma);
+       if (ret_val != QLA_SUCCESS)
+               goto qla4xxx_send_tgts_exit;
+
+       ret_val = qla4xxx_req_ddb_entry(ha, &ddb_index);
+       if (ret_val != QLA_SUCCESS)
+               goto qla4xxx_send_tgts_exit;
+
+       memset((void *)fw_ddb_entry->iSCSIAlias, 0,
+              sizeof(fw_ddb_entry->iSCSIAlias));
+
+       memset((void *)fw_ddb_entry->iscsiName, 0,
+              sizeof(fw_ddb_entry->iscsiName));
+
+       memset((void *)fw_ddb_entry->ipAddr, 0, sizeof(fw_ddb_entry->ipAddr));
+       memset((void *)fw_ddb_entry->targetAddr, 0,
+              sizeof(fw_ddb_entry->targetAddr));
+
+       fw_ddb_entry->options = (DDB_OPT_DISC_SESSION | DDB_OPT_TARGET);
+       fw_ddb_entry->portNumber = cpu_to_le16(ntohs(port));
+
+       fw_ddb_entry->ipAddr[0] = *ip;
+       fw_ddb_entry->ipAddr[1] = *(ip + 1);
+       fw_ddb_entry->ipAddr[2] = *(ip + 2);
+       fw_ddb_entry->ipAddr[3] = *(ip + 3);
+
+       ret_val = qla4xxx_set_ddb_entry(ha, ddb_index, fw_ddb_entry_dma);
+
+qla4xxx_send_tgts_exit:
+       dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
+                         fw_ddb_entry, fw_ddb_entry_dma);
+       return ret_val;
+}
+
diff --git a/drivers/scsi/qla4xxx/ql4_nvram.c b/drivers/scsi/qla4xxx/ql4_nvram.c
new file mode 100644 (file)
index 0000000..e3957ca
--- /dev/null
@@ -0,0 +1,224 @@
+/*
+ * QLogic iSCSI HBA Driver
+ * Copyright (c)  2003-2006 QLogic Corporation
+ *
+ * See LICENSE.qla4xxx for copyright and licensing details.
+ */
+
+#include "ql4_def.h"
+
+static inline int eeprom_size(struct scsi_qla_host *ha)
+{
+       return is_qla4022(ha) ? FM93C86A_SIZE_16 : FM93C66A_SIZE_16;
+}
+
+static inline int eeprom_no_addr_bits(struct scsi_qla_host *ha)
+{
+       return is_qla4022(ha) ? FM93C86A_NO_ADDR_BITS_16 :
+               FM93C56A_NO_ADDR_BITS_16;
+}
+
+static inline int eeprom_no_data_bits(struct scsi_qla_host *ha)
+{
+       return FM93C56A_DATA_BITS_16;
+}
+
+static int fm93c56a_select(struct scsi_qla_host * ha)
+{
+       DEBUG5(printk(KERN_ERR "fm93c56a_select:\n"));
+
+       ha->eeprom_cmd_data = AUBURN_EEPROM_CS_1 | 0x000f0000;
+       writel(ha->eeprom_cmd_data, isp_nvram(ha));
+       readl(isp_nvram(ha));
+       return 1;
+}
+
+static int fm93c56a_cmd(struct scsi_qla_host * ha, int cmd, int addr)
+{
+       int i;
+       int mask;
+       int dataBit;
+       int previousBit;
+
+       /* Clock in a zero, then do the start bit. */
+       writel(ha->eeprom_cmd_data | AUBURN_EEPROM_DO_1, isp_nvram(ha));
+       writel(ha->eeprom_cmd_data | AUBURN_EEPROM_DO_1 |
+              AUBURN_EEPROM_CLK_RISE, isp_nvram(ha));
+       writel(ha->eeprom_cmd_data | AUBURN_EEPROM_DO_1 |
+              AUBURN_EEPROM_CLK_FALL, isp_nvram(ha));
+       readl(isp_nvram(ha));
+       mask = 1 << (FM93C56A_CMD_BITS - 1);
+
+       /* Force the previous data bit to be different. */
+       previousBit = 0xffff;
+       for (i = 0; i < FM93C56A_CMD_BITS; i++) {
+               dataBit =
+                       (cmd & mask) ? AUBURN_EEPROM_DO_1 : AUBURN_EEPROM_DO_0;
+               if (previousBit != dataBit) {
+
+                       /*
+                        * If the bit changed, then change the DO state to
+                        * match.
+                        */
+                       writel(ha->eeprom_cmd_data | dataBit, isp_nvram(ha));
+                       previousBit = dataBit;
+               }
+               writel(ha->eeprom_cmd_data | dataBit |
+                      AUBURN_EEPROM_CLK_RISE, isp_nvram(ha));
+               writel(ha->eeprom_cmd_data | dataBit |
+                      AUBURN_EEPROM_CLK_FALL, isp_nvram(ha));
+               readl(isp_nvram(ha));
+               cmd = cmd << 1;
+       }
+       mask = 1 << (eeprom_no_addr_bits(ha) - 1);
+
+       /* Force the previous data bit to be different. */
+       previousBit = 0xffff;
+       for (i = 0; i < eeprom_no_addr_bits(ha); i++) {
+               dataBit = addr & mask ? AUBURN_EEPROM_DO_1 :
+                       AUBURN_EEPROM_DO_0;
+               if (previousBit != dataBit) {
+                       /*
+                        * If the bit changed, then change the DO state to
+                        * match.
+                        */
+                       writel(ha->eeprom_cmd_data | dataBit, isp_nvram(ha));
+                       previousBit = dataBit;
+               }
+               writel(ha->eeprom_cmd_data | dataBit |
+                      AUBURN_EEPROM_CLK_RISE, isp_nvram(ha));
+               writel(ha->eeprom_cmd_data | dataBit |
+                      AUBURN_EEPROM_CLK_FALL, isp_nvram(ha));
+               readl(isp_nvram(ha));
+               addr = addr << 1;
+       }
+       return 1;
+}
+
+static int fm93c56a_deselect(struct scsi_qla_host * ha)
+{
+       ha->eeprom_cmd_data = AUBURN_EEPROM_CS_0 | 0x000f0000;
+       writel(ha->eeprom_cmd_data, isp_nvram(ha));
+       readl(isp_nvram(ha));
+       return 1;
+}
+
+static int fm93c56a_datain(struct scsi_qla_host * ha, unsigned short *value)
+{
+       int i;
+       int data = 0;
+       int dataBit;
+
+       /* Read the data bits
+        * The first bit is a dummy.  Clock right over it. */
+       for (i = 0; i < eeprom_no_data_bits(ha); i++) {
+               writel(ha->eeprom_cmd_data |
+                      AUBURN_EEPROM_CLK_RISE, isp_nvram(ha));
+               writel(ha->eeprom_cmd_data |
+                      AUBURN_EEPROM_CLK_FALL, isp_nvram(ha));
+               dataBit =
+                       (readw(isp_nvram(ha)) & AUBURN_EEPROM_DI_1) ? 1 : 0;
+               data = (data << 1) | dataBit;
+       }
+
+       *value = data;
+       return 1;
+}
+
+static int eeprom_readword(int eepromAddr, u16 * value,
+                          struct scsi_qla_host * ha)
+{
+       fm93c56a_select(ha);
+       fm93c56a_cmd(ha, FM93C56A_READ, eepromAddr);
+       fm93c56a_datain(ha, value);
+       fm93c56a_deselect(ha);
+       return 1;
+}
+
+/* Hardware_lock must be set before calling */
+u16 rd_nvram_word(struct scsi_qla_host * ha, int offset)
+{
+       u16 val;
+
+       /* NOTE: NVRAM uses half-word addresses */
+       eeprom_readword(offset, &val, ha);
+       return val;
+}
+
+int qla4xxx_is_nvram_configuration_valid(struct scsi_qla_host * ha)
+{
+       int status = QLA_ERROR;
+       uint16_t checksum = 0;
+       uint32_t index;
+       unsigned long flags;
+
+       spin_lock_irqsave(&ha->hardware_lock, flags);
+       for (index = 0; index < eeprom_size(ha); index++)
+               checksum += rd_nvram_word(ha, index);
+       spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+       if (checksum == 0)
+               status = QLA_SUCCESS;
+
+       return status;
+}
+
+/*************************************************************************
+ *
+ *                     Hardware Semaphore routines
+ *
+ *************************************************************************/
+int ql4xxx_sem_spinlock(struct scsi_qla_host * ha, u32 sem_mask, u32 sem_bits)
+{
+       uint32_t value;
+       unsigned long flags;
+       unsigned int seconds = 30;
+
+       DEBUG2(printk("scsi%ld : Trying to get SEM lock - mask= 0x%x, code = "
+                     "0x%x\n", ha->host_no, sem_mask, sem_bits));
+       do {
+               spin_lock_irqsave(&ha->hardware_lock, flags);
+               writel((sem_mask | sem_bits), isp_semaphore(ha));
+               value = readw(isp_semaphore(ha));
+               spin_unlock_irqrestore(&ha->hardware_lock, flags);
+               if ((value & (sem_mask >> 16)) == sem_bits) {
+                       DEBUG2(printk("scsi%ld : Got SEM LOCK - mask= 0x%x, "
+                                     "code = 0x%x\n", ha->host_no,
+                                     sem_mask, sem_bits));
+                       return QLA_SUCCESS;
+               }
+               ssleep(1);
+       } while (--seconds);
+       return QLA_ERROR;
+}
+
+void ql4xxx_sem_unlock(struct scsi_qla_host * ha, u32 sem_mask)
+{
+       unsigned long flags;
+
+       spin_lock_irqsave(&ha->hardware_lock, flags);
+       writel(sem_mask, isp_semaphore(ha));
+       readl(isp_semaphore(ha));
+       spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+       DEBUG2(printk("scsi%ld : UNLOCK SEM - mask= 0x%x\n", ha->host_no,
+                     sem_mask));
+}
+
+int ql4xxx_sem_lock(struct scsi_qla_host * ha, u32 sem_mask, u32 sem_bits)
+{
+       uint32_t value;
+       unsigned long flags;
+
+       spin_lock_irqsave(&ha->hardware_lock, flags);
+       writel((sem_mask | sem_bits), isp_semaphore(ha));
+       value = readw(isp_semaphore(ha));
+       spin_unlock_irqrestore(&ha->hardware_lock, flags);
+       if ((value & (sem_mask >> 16)) == sem_bits) {
+               DEBUG2(printk("scsi%ld : Got SEM LOCK - mask= 0x%x, code = "
+                             "0x%x, sema code=0x%x\n", ha->host_no,
+                             sem_mask, sem_bits, value));
+               return 1;
+       }
+       return 0;
+}
diff --git a/drivers/scsi/qla4xxx/ql4_nvram.h b/drivers/scsi/qla4xxx/ql4_nvram.h
new file mode 100644 (file)
index 0000000..08e2aed
--- /dev/null
@@ -0,0 +1,256 @@
+/*
+ * QLogic iSCSI HBA Driver
+ * Copyright (c)  2003-2006 QLogic Corporation
+ *
+ * See LICENSE.qla4xxx for copyright and licensing details.
+ */
+
+#ifndef _QL4XNVRM_H_
+#define _QL4XNVRM_H_
+
+/*
+ * AM29LV Flash definitions
+ */
+#define FM93C56A_SIZE_8         0x100
+#define FM93C56A_SIZE_16 0x80
+#define FM93C66A_SIZE_8         0x200
+#define FM93C66A_SIZE_16 0x100/* 4010 */
+#define FM93C86A_SIZE_16 0x400/* 4022 */
+
+#define         FM93C56A_START       0x1
+
+// Commands
+#define         FM93C56A_READ        0x2
+#define         FM93C56A_WEN         0x0
+#define         FM93C56A_WRITE       0x1
+#define         FM93C56A_WRITE_ALL   0x0
+#define         FM93C56A_WDS         0x0
+#define         FM93C56A_ERASE       0x3
+#define         FM93C56A_ERASE_ALL   0x0
+
+/* Command Extentions */
+#define         FM93C56A_WEN_EXT        0x3
+#define         FM93C56A_WRITE_ALL_EXT  0x1
+#define         FM93C56A_WDS_EXT        0x0
+#define         FM93C56A_ERASE_ALL_EXT  0x2
+
+/* Address Bits */
+#define         FM93C56A_NO_ADDR_BITS_16   8   /* 4010 */
+#define         FM93C56A_NO_ADDR_BITS_8    9   /* 4010 */
+#define         FM93C86A_NO_ADDR_BITS_16   10  /* 4022 */
+
+/* Data Bits */
+#define         FM93C56A_DATA_BITS_16   16
+#define         FM93C56A_DATA_BITS_8    8
+
+/* Special Bits */
+#define         FM93C56A_READ_DUMMY_BITS   1
+#define         FM93C56A_READY             0
+#define         FM93C56A_BUSY              1
+#define         FM93C56A_CMD_BITS          2
+
+/* Auburn Bits */
+#define         AUBURN_EEPROM_DI           0x8
+#define         AUBURN_EEPROM_DI_0         0x0
+#define         AUBURN_EEPROM_DI_1         0x8
+#define         AUBURN_EEPROM_DO           0x4
+#define         AUBURN_EEPROM_DO_0         0x0
+#define         AUBURN_EEPROM_DO_1         0x4
+#define         AUBURN_EEPROM_CS           0x2
+#define         AUBURN_EEPROM_CS_0         0x0
+#define         AUBURN_EEPROM_CS_1         0x2
+#define         AUBURN_EEPROM_CLK_RISE     0x1
+#define         AUBURN_EEPROM_CLK_FALL     0x0
+
+/* */
+/* EEPROM format */
+/* */
+struct bios_params {
+       uint16_t SpinUpDelay:1;
+       uint16_t BIOSDisable:1;
+       uint16_t MMAPEnable:1;
+       uint16_t BootEnable:1;
+       uint16_t Reserved0:12;
+       uint8_t bootID0:7;
+       uint8_t bootID0Valid:1;
+       uint8_t bootLUN0[8];
+       uint8_t bootID1:7;
+       uint8_t bootID1Valid:1;
+       uint8_t bootLUN1[8];
+       uint16_t MaxLunsPerTarget;
+       uint8_t Reserved1[10];
+};
+
+struct eeprom_port_cfg {
+
+       /* MTU MAC 0 */
+       u16 etherMtu_mac;
+
+       /* Flow Control MAC 0 */
+       u16 pauseThreshold_mac;
+       u16 resumeThreshold_mac;
+       u16 reserved[13];
+};
+
+struct eeprom_function_cfg {
+       u8 reserved[30];
+
+       /* MAC ADDR */
+       u8 macAddress[6];
+       u8 macAddressSecondary[6];
+       u16 subsysVendorId;
+       u16 subsysDeviceId;
+};
+
+struct eeprom_data {
+       union {
+               struct {        /* isp4010 */
+                       u8 asic_id[4]; /* x00 */
+                       u8 version;     /* x04 */
+                       u8 reserved;    /* x05 */
+                       u16 board_id;   /* x06 */
+#define          EEPROM_BOARDID_ELDORADO    1
+#define          EEPROM_BOARDID_PLACER      2
+
+#define EEPROM_SERIAL_NUM_SIZE      16
+                       u8 serial_number[EEPROM_SERIAL_NUM_SIZE]; /* x08 */
+
+                       /* ExtHwConfig: */
+                       /* Offset = 24bytes
+                        *
+                        * | SSRAM Size|     |ST|PD|SDRAM SZ| W| B| SP  |  |
+                        * |15|14|13|12|11|10| 9| 8| 7| 6| 5| 4| 3| 2| 1| 0|
+                        * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
+                        */
+                       u16 ext_hw_conf; /* x18 */
+                       u8 mac0[6];     /* x1A */
+                       u8 mac1[6];     /* x20 */
+                       u8 mac2[6];     /* x26 */
+                       u8 mac3[6];     /* x2C */
+                       u16 etherMtu;   /* x32 */
+                       u16 macConfig;  /* x34 */
+#define         MAC_CONFIG_ENABLE_ANEG     0x0001
+#define         MAC_CONFIG_ENABLE_PAUSE    0x0002
+                       u16 phyConfig;  /* x36 */
+#define         PHY_CONFIG_PHY_ADDR_MASK             0x1f
+#define         PHY_CONFIG_ENABLE_FW_MANAGEMENT_MASK 0x20
+                       u16 topcat;     /* x38 */
+#define TOPCAT_PRESENT         0x0100
+#define TOPCAT_MASK            0xFF00
+
+#define EEPROM_UNUSED_1_SIZE   2
+                       u8 unused_1[EEPROM_UNUSED_1_SIZE]; /* x3A */
+                       u16 bufletSize; /* x3C */
+                       u16 bufletCount;        /* x3E */
+                       u16 bufletPauseThreshold; /* x40 */
+                       u16 tcpWindowThreshold50; /* x42 */
+                       u16 tcpWindowThreshold25; /* x44 */
+                       u16 tcpWindowThreshold0; /* x46 */
+                       u16 ipHashTableBaseHi;  /* x48 */
+                       u16 ipHashTableBaseLo;  /* x4A */
+                       u16 ipHashTableSize;    /* x4C */
+                       u16 tcpHashTableBaseHi; /* x4E */
+                       u16 tcpHashTableBaseLo; /* x50 */
+                       u16 tcpHashTableSize;   /* x52 */
+                       u16 ncbTableBaseHi;     /* x54 */
+                       u16 ncbTableBaseLo;     /* x56 */
+                       u16 ncbTableSize;       /* x58 */
+                       u16 drbTableBaseHi;     /* x5A */
+                       u16 drbTableBaseLo;     /* x5C */
+                       u16 drbTableSize;       /* x5E */
+
+#define EEPROM_UNUSED_2_SIZE   4
+                       u8 unused_2[EEPROM_UNUSED_2_SIZE]; /* x60 */
+                       u16 ipReassemblyTimeout; /* x64 */
+                       u16 tcpMaxWindowSizeHi; /* x66 */
+                       u16 tcpMaxWindowSizeLo; /* x68 */
+                       u32 net_ip_addr0;       /* x6A Added for TOE
+                                                * functionality. */
+                       u32 net_ip_addr1;       /* x6E */
+                       u32 scsi_ip_addr0;      /* x72 */
+                       u32 scsi_ip_addr1;      /* x76 */
+#define EEPROM_UNUSED_3_SIZE   128     /* changed from 144 to account
+                                        * for ip addresses */
+                       u8 unused_3[EEPROM_UNUSED_3_SIZE]; /* x7A */
+                       u16 subsysVendorId_f0;  /* xFA */
+                       u16 subsysDeviceId_f0;  /* xFC */
+
+                       /* Address = 0x7F */
+#define FM93C56A_SIGNATURE  0x9356
+#define FM93C66A_SIGNATURE  0x9366
+                       u16 signature;  /* xFE */
+
+#define EEPROM_UNUSED_4_SIZE   250
+                       u8 unused_4[EEPROM_UNUSED_4_SIZE]; /* x100 */
+                       u16 subsysVendorId_f1;  /* x1FA */
+                       u16 subsysDeviceId_f1;  /* x1FC */
+                       u16 checksum;   /* x1FE */
+               } __attribute__ ((packed)) isp4010;
+               struct {        /* isp4022 */
+                       u8 asicId[4];   /* x00 */
+                       u8 version;     /* x04 */
+                       u8 reserved_5;  /* x05 */
+                       u16 boardId;    /* x06 */
+                       u8 boardIdStr[16];      /* x08 */
+                       u8 serialNumber[16];    /* x18 */
+
+                       /* External Hardware Configuration */
+                       u16 ext_hw_conf;        /* x28 */
+
+                       /* MAC 0 CONFIGURATION */
+                       struct eeprom_port_cfg macCfg_port0; /* x2A */
+
+                       /* MAC 1 CONFIGURATION */
+                       struct eeprom_port_cfg macCfg_port1; /* x4A */
+
+                       /* DDR SDRAM Configuration */
+                       u16 bufletSize; /* x6A */
+                       u16 bufletCount;        /* x6C */
+                       u16 tcpWindowThreshold50; /* x6E */
+                       u16 tcpWindowThreshold25; /* x70 */
+                       u16 tcpWindowThreshold0; /* x72 */
+                       u16 ipHashTableBaseHi;  /* x74 */
+                       u16 ipHashTableBaseLo;  /* x76 */
+                       u16 ipHashTableSize;    /* x78 */
+                       u16 tcpHashTableBaseHi; /* x7A */
+                       u16 tcpHashTableBaseLo; /* x7C */
+                       u16 tcpHashTableSize;   /* x7E */
+                       u16 ncbTableBaseHi;     /* x80 */
+                       u16 ncbTableBaseLo;     /* x82 */
+                       u16 ncbTableSize;       /* x84 */
+                       u16 drbTableBaseHi;     /* x86 */
+                       u16 drbTableBaseLo;     /* x88 */
+                       u16 drbTableSize;       /* x8A */
+                       u16 reserved_142[4];    /* x8C */
+
+                       /* TCP/IP Parameters */
+                       u16 ipReassemblyTimeout; /* x94 */
+                       u16 tcpMaxWindowSize;   /* x96 */
+                       u16 ipSecurity; /* x98 */
+                       u8 reserved_156[294]; /* x9A */
+                       u16 qDebug[8];  /* QLOGIC USE ONLY   x1C0 */
+                       struct eeprom_function_cfg funcCfg_fn0; /* x1D0 */
+                       u16 reserved_510; /* x1FE */
+
+                       /* Address = 512 */
+                       u8 oemSpace[432]; /* x200 */
+                       struct bios_params sBIOSParams_fn1; /* x3B0 */
+                       struct eeprom_function_cfg funcCfg_fn1; /* x3D0 */
+                       u16 reserved_1022; /* x3FE */
+
+                       /* Address = 1024 */
+                       u8 reserved_1024[464];  /* x400 */
+                       struct eeprom_function_cfg funcCfg_fn2; /* x5D0 */
+                       u16 reserved_1534; /* x5FE */
+
+                       /* Address = 1536 */
+                       u8 reserved_1536[432];  /* x600 */
+                       struct bios_params sBIOSParams_fn3; /* x7B0 */
+                       struct eeprom_function_cfg funcCfg_fn3; /* x7D0 */
+                       u16 checksum;   /* x7FE */
+               } __attribute__ ((packed)) isp4022;
+       };
+};
+
+
+#endif /* _QL4XNVRM_H_ */
diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c
new file mode 100644 (file)
index 0000000..5036ebf
--- /dev/null
@@ -0,0 +1,1755 @@
+/*
+ * QLogic iSCSI HBA Driver
+ * Copyright (c)  2003-2006 QLogic Corporation
+ *
+ * See LICENSE.qla4xxx for copyright and licensing details.
+ */
+#include <linux/moduleparam.h>
+
+#include <scsi/scsi_tcq.h>
+#include <scsi/scsicam.h>
+
+#include "ql4_def.h"
+
+/*
+ * Driver version
+ */
+char qla4xxx_version_str[40];
+
+/*
+ * SRB allocation cache
+ */
+static kmem_cache_t *srb_cachep;
+
+/*
+ * Module parameter information and variables
+ */
+int ql4xdiscoverywait = 60;
+module_param(ql4xdiscoverywait, int, S_IRUGO | S_IRUSR);
+MODULE_PARM_DESC(ql4xdiscoverywait, "Discovery wait time");
+int ql4xdontresethba = 0;
+module_param(ql4xdontresethba, int, S_IRUGO | S_IRUSR);
+MODULE_PARM_DESC(ql4xdontresethba,
+                "Dont reset the HBA when the driver gets 0x8002 AEN "
+                " default it will reset hba :0"
+                " set to 1 to avoid resetting HBA");
+
+int extended_error_logging = 0; /* 0 = off, 1 = log errors */
+module_param(extended_error_logging, int, S_IRUGO | S_IRUSR);
+MODULE_PARM_DESC(extended_error_logging,
+                "Option to enable extended error logging, "
+                "Default is 0 - no logging, 1 - debug logging");
+
+/*
+ * SCSI host template entry points
+ */
+
+void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha);
+
+/*
+ * iSCSI template entry points
+ */
+static int qla4xxx_tgt_dscvr(enum iscsi_tgt_dscvr type, uint32_t host_no,
+                            uint32_t enable, struct sockaddr *dst_addr);
+static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn,
+                                 enum iscsi_param param, char *buf);
+static int qla4xxx_sess_get_param(struct iscsi_cls_session *sess,
+                                 enum iscsi_param param, char *buf);
+static void qla4xxx_conn_stop(struct iscsi_cls_conn *conn, int flag);
+static int qla4xxx_conn_start(struct iscsi_cls_conn *conn);
+static void qla4xxx_recovery_timedout(struct iscsi_cls_session *session);
+
+/*
+ * SCSI host template entry points
+ */
+static int qla4xxx_queuecommand(struct scsi_cmnd *cmd,
+                               void (*done) (struct scsi_cmnd *));
+static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd);
+static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd);
+static int qla4xxx_slave_alloc(struct scsi_device *device);
+static int qla4xxx_slave_configure(struct scsi_device *device);
+static void qla4xxx_slave_destroy(struct scsi_device *sdev);
+
+static struct scsi_host_template qla4xxx_driver_template = {
+       .module                 = THIS_MODULE,
+       .name                   = DRIVER_NAME,
+       .proc_name              = DRIVER_NAME,
+       .queuecommand           = qla4xxx_queuecommand,
+
+       .eh_device_reset_handler = qla4xxx_eh_device_reset,
+       .eh_host_reset_handler  = qla4xxx_eh_host_reset,
+
+       .slave_configure        = qla4xxx_slave_configure,
+       .slave_alloc            = qla4xxx_slave_alloc,
+       .slave_destroy          = qla4xxx_slave_destroy,
+
+       .this_id                = -1,
+       .cmd_per_lun            = 3,
+       .use_clustering         = ENABLE_CLUSTERING,
+       .sg_tablesize           = SG_ALL,
+
+       .max_sectors            = 0xFFFF,
+};
+
+static struct iscsi_transport qla4xxx_iscsi_transport = {
+       .owner                  = THIS_MODULE,
+       .name                   = DRIVER_NAME,
+       .param_mask             = ISCSI_CONN_PORT |
+                                 ISCSI_CONN_ADDRESS |
+                                 ISCSI_TARGET_NAME |
+                                 ISCSI_TPGT,
+       .sessiondata_size       = sizeof(struct ddb_entry),
+       .host_template          = &qla4xxx_driver_template,
+
+       .tgt_dscvr              = qla4xxx_tgt_dscvr,
+       .get_conn_param         = qla4xxx_conn_get_param,
+       .get_session_param      = qla4xxx_sess_get_param,
+       .start_conn             = qla4xxx_conn_start,
+       .stop_conn              = qla4xxx_conn_stop,
+       .session_recovery_timedout = qla4xxx_recovery_timedout,
+};
+
+static struct scsi_transport_template *qla4xxx_scsi_transport;
+
+static void qla4xxx_recovery_timedout(struct iscsi_cls_session *session)
+{
+       struct ddb_entry *ddb_entry = session->dd_data;
+       struct scsi_qla_host *ha = ddb_entry->ha;
+
+       DEBUG2(printk("scsi%ld: %s: index [%d] port down retry count of (%d) "
+                     "secs exhausted, marking device DEAD.\n", ha->host_no,
+                     __func__, ddb_entry->fw_ddb_index,
+                     ha->port_down_retry_count));
+
+       atomic_set(&ddb_entry->state, DDB_STATE_DEAD);
+
+       DEBUG2(printk("scsi%ld: %s: scheduling dpc routine - dpc flags = "
+                     "0x%lx\n", ha->host_no, __func__, ha->dpc_flags));
+       queue_work(ha->dpc_thread, &ha->dpc_work);
+}
+
+static int qla4xxx_conn_start(struct iscsi_cls_conn *conn)
+{
+       struct iscsi_cls_session *session;
+       struct ddb_entry *ddb_entry;
+
+       session = iscsi_dev_to_session(conn->dev.parent);
+       ddb_entry = session->dd_data;
+
+       DEBUG2(printk("scsi%ld: %s: index [%d] starting conn\n",
+                     ddb_entry->ha->host_no, __func__,
+                     ddb_entry->fw_ddb_index));
+       iscsi_unblock_session(session);
+       return 0;
+}
+
+static void qla4xxx_conn_stop(struct iscsi_cls_conn *conn, int flag)
+{
+       struct iscsi_cls_session *session;
+       struct ddb_entry *ddb_entry;
+
+       session = iscsi_dev_to_session(conn->dev.parent);
+       ddb_entry = session->dd_data;
+
+       DEBUG2(printk("scsi%ld: %s: index [%d] stopping conn\n",
+                     ddb_entry->ha->host_no, __func__,
+                     ddb_entry->fw_ddb_index));
+       if (flag == STOP_CONN_RECOVER)
+               iscsi_block_session(session);
+       else
+               printk(KERN_ERR "iscsi: invalid stop flag %d\n", flag);
+}
+
+static int qla4xxx_sess_get_param(struct iscsi_cls_session *sess,
+                                 enum iscsi_param param, char *buf)
+{
+       struct ddb_entry *ddb_entry = sess->dd_data;
+       int len;
+
+       switch (param) {
+       case ISCSI_PARAM_TARGET_NAME:
+               len = snprintf(buf, PAGE_SIZE - 1, "%s\n",
+                              ddb_entry->iscsi_name);
+               break;
+       case ISCSI_PARAM_TPGT:
+               len = sprintf(buf, "%u\n", ddb_entry->tpgt);
+               break;
+       default:
+               return -ENOSYS;
+       }
+
+       return len;
+}
+
+static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn,
+                                 enum iscsi_param param, char *buf)
+{
+       struct iscsi_cls_session *session;
+       struct ddb_entry *ddb_entry;
+       int len;
+
+       session = iscsi_dev_to_session(conn->dev.parent);
+       ddb_entry = session->dd_data;
+
+       switch (param) {
+       case ISCSI_PARAM_CONN_PORT:
+               len = sprintf(buf, "%hu\n", ddb_entry->port);
+               break;
+       case ISCSI_PARAM_CONN_ADDRESS:
+               /* TODO: what are the ipv6 bits */
+               len = sprintf(buf, "%u.%u.%u.%u\n",
+                             NIPQUAD(ddb_entry->ip_addr));
+               break;
+       default:
+               return -ENOSYS;
+       }
+
+       return len;
+}
+
+static int qla4xxx_tgt_dscvr(enum iscsi_tgt_dscvr type, uint32_t host_no,
+                            uint32_t enable, struct sockaddr *dst_addr)
+{
+       struct scsi_qla_host *ha;
+       struct Scsi_Host *shost;
+       struct sockaddr_in *addr;
+       struct sockaddr_in6 *addr6;
+       int ret = 0;
+
+       shost = scsi_host_lookup(host_no);
+       if (IS_ERR(shost)) {
+               printk(KERN_ERR "Could not find host no %u\n", host_no);
+               return -ENODEV;
+       }
+
+       ha = (struct scsi_qla_host *) shost->hostdata;
+
+       switch (type) {
+       case ISCSI_TGT_DSCVR_SEND_TARGETS:
+               if (dst_addr->sa_family == AF_INET) {
+                       addr = (struct sockaddr_in *)dst_addr;
+                       if (qla4xxx_send_tgts(ha, (char *)&addr->sin_addr,
+                                             addr->sin_port) != QLA_SUCCESS)
+                               ret = -EIO;
+               } else if (dst_addr->sa_family == AF_INET6) {
+                       /*
+                        * TODO: fix qla4xxx_send_tgts
+                        */
+                       addr6 = (struct sockaddr_in6 *)dst_addr;
+                       if (qla4xxx_send_tgts(ha, (char *)&addr6->sin6_addr,
+                                             addr6->sin6_port) != QLA_SUCCESS)
+                               ret = -EIO;
+               } else
+                       ret = -ENOSYS;
+               break;
+       default:
+               ret = -ENOSYS;
+       }
+
+       scsi_host_put(shost);
+       return ret;
+}
+
+void qla4xxx_destroy_sess(struct ddb_entry *ddb_entry)
+{
+       if (!ddb_entry->sess)
+               return;
+
+       if (ddb_entry->conn) {
+               iscsi_if_destroy_session_done(ddb_entry->conn);
+               iscsi_destroy_conn(ddb_entry->conn);
+               iscsi_remove_session(ddb_entry->sess);
+       }
+       iscsi_free_session(ddb_entry->sess);
+}
+
+int qla4xxx_add_sess(struct ddb_entry *ddb_entry)
+{
+       int err;
+
+       err = iscsi_add_session(ddb_entry->sess, ddb_entry->fw_ddb_index);
+       if (err) {
+               DEBUG2(printk(KERN_ERR "Could not add session.\n"));
+               return err;
+       }
+
+       ddb_entry->conn = iscsi_create_conn(ddb_entry->sess, 0);
+       if (!ddb_entry->conn) {
+               iscsi_remove_session(ddb_entry->sess);
+               DEBUG2(printk(KERN_ERR "Could not add connection.\n"));
+               return -ENOMEM;
+       }
+
+       ddb_entry->sess->recovery_tmo = ddb_entry->ha->port_down_retry_count;
+       iscsi_if_create_session_done(ddb_entry->conn);
+       return 0;
+}
+
+struct ddb_entry *qla4xxx_alloc_sess(struct scsi_qla_host *ha)
+{
+       struct ddb_entry *ddb_entry;
+       struct iscsi_cls_session *sess;
+
+       sess = iscsi_alloc_session(ha->host, &qla4xxx_iscsi_transport);
+       if (!sess)
+               return NULL;
+
+       ddb_entry = sess->dd_data;
+       memset(ddb_entry, 0, sizeof(*ddb_entry));
+       ddb_entry->ha = ha;
+       ddb_entry->sess = sess;
+       return ddb_entry;
+}
+
+/*
+ * Timer routines
+ */
+
+static void qla4xxx_start_timer(struct scsi_qla_host *ha, void *func,
+                               unsigned long interval)
+{
+       DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n",
+                    __func__, ha->host->host_no));
+       init_timer(&ha->timer);
+       ha->timer.expires = jiffies + interval * HZ;
+       ha->timer.data = (unsigned long)ha;
+       ha->timer.function = (void (*)(unsigned long))func;
+       add_timer(&ha->timer);
+       ha->timer_active = 1;
+}
+
+static void qla4xxx_stop_timer(struct scsi_qla_host *ha)
+{
+       del_timer_sync(&ha->timer);
+       ha->timer_active = 0;
+}
+
+/***
+ * qla4xxx_mark_device_missing - mark a device as missing.
+ * @ha: Pointer to host adapter structure.
+ * @ddb_entry: Pointer to device database entry
+ *
+ * This routine marks a device missing and resets the relogin retry count.
+ **/
+void qla4xxx_mark_device_missing(struct scsi_qla_host *ha,
+                                struct ddb_entry *ddb_entry)
+{
+       atomic_set(&ddb_entry->state, DDB_STATE_MISSING);
+       DEBUG3(printk("scsi%d:%d:%d: index [%d] marked MISSING\n",
+                     ha->host_no, ddb_entry->bus, ddb_entry->target,
+                     ddb_entry->fw_ddb_index));
+       iscsi_conn_error(ddb_entry->conn, ISCSI_ERR_CONN_FAILED);
+}
+
+static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha,
+                                      struct ddb_entry *ddb_entry,
+                                      struct scsi_cmnd *cmd,
+                                      void (*done)(struct scsi_cmnd *))
+{
+       struct srb *srb;
+
+       srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
+       if (!srb)
+               return srb;
+
+       atomic_set(&srb->ref_count, 1);
+       srb->ha = ha;
+       srb->ddb = ddb_entry;
+       srb->cmd = cmd;
+       srb->flags = 0;
+       cmd->SCp.ptr = (void *)srb;
+       cmd->scsi_done = done;
+
+       return srb;
+}
+
+static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb)
+{
+       struct scsi_cmnd *cmd = srb->cmd;
+
+       if (srb->flags & SRB_DMA_VALID) {
+               if (cmd->use_sg) {
+                       pci_unmap_sg(ha->pdev, cmd->request_buffer,
+                                    cmd->use_sg, cmd->sc_data_direction);
+               } else if (cmd->request_bufflen) {
+                       pci_unmap_single(ha->pdev, srb->dma_handle,
+                                        cmd->request_bufflen,
+                                        cmd->sc_data_direction);
+               }
+               srb->flags &= ~SRB_DMA_VALID;
+       }
+       cmd->SCp.ptr = NULL;
+}
+
+void qla4xxx_srb_compl(struct scsi_qla_host *ha, struct srb *srb)
+{
+       struct scsi_cmnd *cmd = srb->cmd;
+
+       qla4xxx_srb_free_dma(ha, srb);
+
+       mempool_free(srb, ha->srb_mempool);
+
+       cmd->scsi_done(cmd);
+}
+
+/**
+ * qla4xxx_queuecommand - scsi layer issues scsi command to driver.
+ * @cmd: Pointer to Linux's SCSI command structure
+ * @done_fn: Function that the driver calls to notify the SCSI mid-layer
+ *     that the command has been processed.
+ *
+ * Remarks:
+ * This routine is invoked by Linux to send a SCSI command to the driver.
+ * The mid-level driver tries to ensure that queuecommand never gets
+ * invoked concurrently with itself or the interrupt handler (although
+ * the interrupt handler may call this routine as part of request-
+ * completion handling).   Unfortunely, it sometimes calls the scheduler
+ * in interrupt context which is a big NO! NO!.
+ **/
+static int qla4xxx_queuecommand(struct scsi_cmnd *cmd,
+                               void (*done)(struct scsi_cmnd *))
+{
+       struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
+       struct ddb_entry *ddb_entry = cmd->device->hostdata;
+       struct srb *srb;
+       int rval;
+
+       if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) {
+               if (atomic_read(&ddb_entry->state) == DDB_STATE_DEAD) {
+                       cmd->result = DID_NO_CONNECT << 16;
+                       goto qc_fail_command;
+               }
+               goto qc_host_busy;
+       }
+
+       spin_unlock_irq(ha->host->host_lock);
+
+       srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd, done);
+       if (!srb)
+               goto qc_host_busy_lock;
+
+       rval = qla4xxx_send_command_to_isp(ha, srb);
+       if (rval != QLA_SUCCESS)
+               goto qc_host_busy_free_sp;
+
+       spin_lock_irq(ha->host->host_lock);
+       return 0;
+
+qc_host_busy_free_sp:
+       qla4xxx_srb_free_dma(ha, srb);
+       mempool_free(srb, ha->srb_mempool);
+
+qc_host_busy_lock:
+       spin_lock_irq(ha->host->host_lock);
+
+qc_host_busy:
+       return SCSI_MLQUEUE_HOST_BUSY;
+
+qc_fail_command:
+       done(cmd);
+
+       return 0;
+}
+
+/**
+ * qla4xxx_mem_free - frees memory allocated to adapter
+ * @ha: Pointer to host adapter structure.
+ *
+ * Frees memory previously allocated by qla4xxx_mem_alloc
+ **/
+static void qla4xxx_mem_free(struct scsi_qla_host *ha)
+{
+       if (ha->queues)
+               dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues,
+                                 ha->queues_dma);
+
+       ha->queues_len = 0;
+       ha->queues = NULL;
+       ha->queues_dma = 0;
+       ha->request_ring = NULL;
+       ha->request_dma = 0;
+       ha->response_ring = NULL;
+       ha->response_dma = 0;
+       ha->shadow_regs = NULL;
+       ha->shadow_regs_dma = 0;
+
+       /* Free srb pool. */
+       if (ha->srb_mempool)
+               mempool_destroy(ha->srb_mempool);
+
+       ha->srb_mempool = NULL;
+
+       /* release io space registers  */
+       if (ha->reg)
+               iounmap(ha->reg);
+       pci_release_regions(ha->pdev);
+}
+
+/**
+ * qla4xxx_mem_alloc - allocates memory for use by adapter.
+ * @ha: Pointer to host adapter structure
+ *
+ * Allocates DMA memory for request and response queues. Also allocates memory
+ * for srbs.
+ **/
+static int qla4xxx_mem_alloc(struct scsi_qla_host *ha)
+{
+       unsigned long align;
+
+       /* Allocate contiguous block of DMA memory for queues. */
+       ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
+                         (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) +
+                         sizeof(struct shadow_regs) +
+                         MEM_ALIGN_VALUE +
+                         (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
+       ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len,
+                                       &ha->queues_dma, GFP_KERNEL);
+       if (ha->queues == NULL) {
+               dev_warn(&ha->pdev->dev,
+                       "Memory Allocation failed - queues.\n");
+
+               goto mem_alloc_error_exit;
+       }
+       memset(ha->queues, 0, ha->queues_len);
+
+       /*
+        * As per RISC alignment requirements -- the bus-address must be a
+        * multiple of the request-ring size (in bytes).
+        */
+       align = 0;
+       if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1))
+               align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma &
+                                          (MEM_ALIGN_VALUE - 1));
+
+       /* Update request and response queue pointers. */
+       ha->request_dma = ha->queues_dma + align;
+       ha->request_ring = (struct queue_entry *) (ha->queues + align);
+       ha->response_dma = ha->queues_dma + align +
+               (REQUEST_QUEUE_DEPTH * QUEUE_SIZE);
+       ha->response_ring = (struct queue_entry *) (ha->queues + align +
+                                                   (REQUEST_QUEUE_DEPTH *
+                                                    QUEUE_SIZE));
+       ha->shadow_regs_dma = ha->queues_dma + align +
+               (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
+               (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE);
+       ha->shadow_regs = (struct shadow_regs *) (ha->queues + align +
+                                                 (REQUEST_QUEUE_DEPTH *
+                                                  QUEUE_SIZE) +
+                                                 (RESPONSE_QUEUE_DEPTH *
+                                                  QUEUE_SIZE));
+
+       /* Allocate memory for srb pool. */
+       ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
+                                        mempool_free_slab, srb_cachep);
+       if (ha->srb_mempool == NULL) {
+               dev_warn(&ha->pdev->dev,
+                       "Memory Allocation failed - SRB Pool.\n");
+
+               goto mem_alloc_error_exit;
+       }
+
+       return QLA_SUCCESS;
+
+mem_alloc_error_exit:
+       qla4xxx_mem_free(ha);
+       return QLA_ERROR;
+}
+
+/**
+ * qla4xxx_timer - checks every second for work to do.
+ * @ha: Pointer to host adapter structure.
+ **/
+static void qla4xxx_timer(struct scsi_qla_host *ha)
+{
+       struct ddb_entry *ddb_entry, *dtemp;
+       int start_dpc = 0;
+
+       /* Search for relogin's to time-out and port down retry. */
+       list_for_each_entry_safe(ddb_entry, dtemp, &ha->ddb_list, list) {
+               /* Count down time between sending relogins */
+               if (adapter_up(ha) &&
+                   !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
+                   atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) {
+                       if (atomic_read(&ddb_entry->retry_relogin_timer) !=
+                           INVALID_ENTRY) {
+                               if (atomic_read(&ddb_entry->retry_relogin_timer)
+                                               == 0) {
+                                       atomic_set(&ddb_entry->
+                                               retry_relogin_timer,
+                                               INVALID_ENTRY);
+                                       set_bit(DPC_RELOGIN_DEVICE,
+                                               &ha->dpc_flags);
+                                       set_bit(DF_RELOGIN, &ddb_entry->flags);
+                                       DEBUG2(printk("scsi%ld: %s: index [%d]"
+                                                     " login device\n",
+                                                     ha->host_no, __func__,
+                                                     ddb_entry->fw_ddb_index));
+                               } else
+                                       atomic_dec(&ddb_entry->
+                                                       retry_relogin_timer);
+                       }
+               }
+
+               /* Wait for relogin to timeout */
+               if (atomic_read(&ddb_entry->relogin_timer) &&
+                   (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) {
+                       /*
+                        * If the relogin times out and the device is
+                        * still NOT ONLINE then try and relogin again.
+                        */
+                       if (atomic_read(&ddb_entry->state) !=
+                           DDB_STATE_ONLINE &&
+                           ddb_entry->fw_ddb_device_state ==
+                           DDB_DS_SESSION_FAILED) {
+                               /* Reset retry relogin timer */
+                               atomic_inc(&ddb_entry->relogin_retry_count);
+                               DEBUG2(printk("scsi%ld: index[%d] relogin"
+                                             " timed out-retrying"
+                                             " relogin (%d)\n",
+                                             ha->host_no,
+                                             ddb_entry->fw_ddb_index,
+                                             atomic_read(&ddb_entry->
+                                                         relogin_retry_count))
+                                       );
+                               start_dpc++;
+                               DEBUG(printk("scsi%ld:%d:%d: index [%d] "
+                                            "initate relogin after"
+                                            " %d seconds\n",
+                                            ha->host_no, ddb_entry->bus,
+                                            ddb_entry->target,
+                                            ddb_entry->fw_ddb_index,
+                                            ddb_entry->default_time2wait + 4)
+                                       );
+
+                               atomic_set(&ddb_entry->retry_relogin_timer,
+                                          ddb_entry->default_time2wait + 4);
+                       }
+               }
+       }
+
+       /* Check for heartbeat interval. */
+       if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE &&
+           ha->heartbeat_interval != 0) {
+               ha->seconds_since_last_heartbeat++;
+               if (ha->seconds_since_last_heartbeat >
+                   ha->heartbeat_interval + 2)
+                       set_bit(DPC_RESET_HA, &ha->dpc_flags);
+       }
+
+
+       /* Wakeup the dpc routine for this adapter, if needed. */
+       if ((start_dpc ||
+            test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
+            test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) ||
+            test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) ||
+            test_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags) ||
+            test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
+            test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) ||
+            test_bit(DPC_AEN, &ha->dpc_flags)) &&
+            ha->dpc_thread) {
+               DEBUG2(printk("scsi%ld: %s: scheduling dpc routine"
+                             " - dpc flags = 0x%lx\n",
+                             ha->host_no, __func__, ha->dpc_flags));
+               queue_work(ha->dpc_thread, &ha->dpc_work);
+       }
+
+       /* Reschedule timer thread to call us back in one second */
+       mod_timer(&ha->timer, jiffies + HZ);
+
+       DEBUG2(ha->seconds_since_last_intr++);
+}
+
+/**
+ * qla4xxx_cmd_wait - waits for all outstanding commands to complete
+ * @ha: Pointer to host adapter structure.
+ *
+ * This routine stalls the driver until all outstanding commands are returned.
+ * Caller must release the Hardware Lock prior to calling this routine.
+ **/
+static int qla4xxx_cmd_wait(struct scsi_qla_host *ha)
+{
+       uint32_t index = 0;
+       int stat = QLA_SUCCESS;
+       unsigned long flags;
+       struct scsi_cmnd *cmd;
+       int wait_cnt = WAIT_CMD_TOV;    /*
+                                        * Initialized for 30 seconds as we
+                                        * expect all commands to retuned
+                                        * ASAP.
+                                        */
+
+       while (wait_cnt) {
+               spin_lock_irqsave(&ha->hardware_lock, flags);
+               /* Find a command that hasn't completed. */
+               for (index = 0; index < ha->host->can_queue; index++) {
+                       cmd = scsi_host_find_tag(ha->host, index);
+                       if (cmd != NULL)
+                               break;
+               }
+               spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+               /* If No Commands are pending, wait is complete */
+               if (index == ha->host->can_queue) {
+                       break;
+               }
+
+               /* If we timed out on waiting for commands to come back
+                * return ERROR.
+                */
+               wait_cnt--;
+               if (wait_cnt == 0)
+                       stat = QLA_ERROR;
+               else {
+                       msleep(1000);
+               }
+       }                       /* End of While (wait_cnt) */
+
+       return stat;
+}
+
+/**
+ * qla4010_soft_reset - performs soft reset.
+ * @ha: Pointer to host adapter structure.
+ **/
+static int qla4010_soft_reset(struct scsi_qla_host *ha)
+{
+       uint32_t max_wait_time;
+       unsigned long flags = 0;
+       int status = QLA_ERROR;
+       uint32_t ctrl_status;
+
+       spin_lock_irqsave(&ha->hardware_lock, flags);
+
+       /*
+        * If the SCSI Reset Interrupt bit is set, clear it.
+        * Otherwise, the Soft Reset won't work.
+        */
+       ctrl_status = readw(&ha->reg->ctrl_status);
+       if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0)
+               writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
+
+       /* Issue Soft Reset */
+       writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status);
+       readl(&ha->reg->ctrl_status);
+
+       spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+       /* Wait until the Network Reset Intr bit is cleared */
+       max_wait_time = RESET_INTR_TOV;
+       do {
+               spin_lock_irqsave(&ha->hardware_lock, flags);
+               ctrl_status = readw(&ha->reg->ctrl_status);
+               spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+               if ((ctrl_status & CSR_NET_RESET_INTR) == 0)
+                       break;
+
+               msleep(1000);
+       } while ((--max_wait_time));
+
+       if ((ctrl_status & CSR_NET_RESET_INTR) != 0) {
+               DEBUG2(printk(KERN_WARNING
+                             "scsi%ld: Network Reset Intr not cleared by "
+                             "Network function, clearing it now!\n",
+                             ha->host_no));
+               spin_lock_irqsave(&ha->hardware_lock, flags);
+               writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status);
+               readl(&ha->reg->ctrl_status);
+               spin_unlock_irqrestore(&ha->hardware_lock, flags);
+       }
+
+       /* Wait until the firmware tells us the Soft Reset is done */
+       max_wait_time = SOFT_RESET_TOV;
+       do {
+               spin_lock_irqsave(&ha->hardware_lock, flags);
+               ctrl_status = readw(&ha->reg->ctrl_status);
+               spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+               if ((ctrl_status & CSR_SOFT_RESET) == 0) {
+                       status = QLA_SUCCESS;
+                       break;
+               }
+
+               msleep(1000);
+       } while ((--max_wait_time));
+
+       /*
+        * Also, make sure that the SCSI Reset Interrupt bit has been cleared
+        * after the soft reset has taken place.
+        */
+       spin_lock_irqsave(&ha->hardware_lock, flags);
+       ctrl_status = readw(&ha->reg->ctrl_status);
+       if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) {
+               writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
+               readl(&ha->reg->ctrl_status);
+       }
+       spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+       /* If soft reset fails then most probably the bios on other
+        * function is also enabled.
+        * Since the initialization is sequential the other fn
+        * wont be able to acknowledge the soft reset.
+        * Issue a force soft reset to workaround this scenario.
+        */
+       if (max_wait_time == 0) {
+               /* Issue Force Soft Reset */
+               spin_lock_irqsave(&ha->hardware_lock, flags);
+               writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status);
+               readl(&ha->reg->ctrl_status);
+               spin_unlock_irqrestore(&ha->hardware_lock, flags);
+               /* Wait until the firmware tells us the Soft Reset is done */
+               max_wait_time = SOFT_RESET_TOV;
+               do {
+                       spin_lock_irqsave(&ha->hardware_lock, flags);
+                       ctrl_status = readw(&ha->reg->ctrl_status);
+                       spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+                       if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) {
+                               status = QLA_SUCCESS;
+                               break;
+                       }
+
+                       msleep(1000);
+               } while ((--max_wait_time));
+       }
+
+       return status;
+}
+
+/**
+ * qla4xxx_topcat_reset - performs hard reset of TopCat Chip.
+ * @ha: Pointer to host adapter structure.
+ **/
+static int qla4xxx_topcat_reset(struct scsi_qla_host *ha)
+{
+       unsigned long flags;
+
+       ql4xxx_lock_nvram(ha);
+       spin_lock_irqsave(&ha->hardware_lock, flags);
+       writel(set_rmask(GPOR_TOPCAT_RESET), isp_gp_out(ha));
+       readl(isp_gp_out(ha));
+       mdelay(1);
+
+       writel(clr_rmask(GPOR_TOPCAT_RESET), isp_gp_out(ha));
+       readl(isp_gp_out(ha));
+       spin_unlock_irqrestore(&ha->hardware_lock, flags);
+       mdelay(2523);
+
+       ql4xxx_unlock_nvram(ha);
+       return QLA_SUCCESS;
+}
+
+/**
+ * qla4xxx_flush_active_srbs - returns all outstanding i/o requests to O.S.
+ * @ha: Pointer to host adapter structure.
+ *
+ * This routine is called just prior to a HARD RESET to return all
+ * outstanding commands back to the Operating System.
+ * Caller should make sure that the following locks are released
+ * before this calling routine: Hardware lock, and io_request_lock.
+ **/
+static void qla4xxx_flush_active_srbs(struct scsi_qla_host *ha)
+{
+       struct srb *srb;
+       int i;
+       unsigned long flags;
+
+       spin_lock_irqsave(&ha->hardware_lock, flags);
+       for (i = 0; i < ha->host->can_queue; i++) {
+               srb = qla4xxx_del_from_active_array(ha, i);
+               if (srb != NULL) {
+                       srb->cmd->result = DID_RESET << 16;
+                       qla4xxx_srb_compl(ha, srb);
+               }
+       }
+       spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+}
+
+/**
+ * qla4xxx_hard_reset - performs HBA Hard Reset
+ * @ha: Pointer to host adapter structure.
+ **/
+static int qla4xxx_hard_reset(struct scsi_qla_host *ha)
+{
+       /* The QLA4010 really doesn't have an equivalent to a hard reset */
+       qla4xxx_flush_active_srbs(ha);
+       if (test_bit(AF_TOPCAT_CHIP_PRESENT, &ha->flags)) {
+               int status = QLA_ERROR;
+
+               if ((qla4010_soft_reset(ha) == QLA_SUCCESS) &&
+                   (qla4xxx_topcat_reset(ha) == QLA_SUCCESS) &&
+                   (qla4010_soft_reset(ha) == QLA_SUCCESS))
+                       status = QLA_SUCCESS;
+               return status;
+       } else
+               return qla4010_soft_reset(ha);
+}
+
+/**
+ * qla4xxx_recover_adapter - recovers adapter after a fatal error
+ * @ha: Pointer to host adapter structure.
+ * @renew_ddb_list: Indicates what to do with the adapter's ddb list
+ *     after adapter recovery has completed.
+ *     0=preserve ddb list, 1=destroy and rebuild ddb list
+ **/
+static int qla4xxx_recover_adapter(struct scsi_qla_host *ha,
+                               uint8_t renew_ddb_list)
+{
+       int status;
+
+       /* Stall incoming I/O until we are done */
+       clear_bit(AF_ONLINE, &ha->flags);
+       DEBUG2(printk("scsi%ld: %s calling qla4xxx_cmd_wait\n", ha->host_no,
+                     __func__));
+
+       /* Wait for outstanding commands to complete.
+        * Stalls the driver for max 30 secs
+        */
+       status = qla4xxx_cmd_wait(ha);
+
+       qla4xxx_disable_intrs(ha);
+
+       /* Flush any pending ddb changed AENs */
+       qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
+
+       /* Reset the firmware.  If successful, function
+        * returns with ISP interrupts enabled.
+        */
+       if (status == QLA_SUCCESS) {
+               DEBUG2(printk("scsi%ld: %s - Performing soft reset..\n",
+                             ha->host_no, __func__));
+               status = qla4xxx_soft_reset(ha);
+       }
+       /* FIXMEkaren: Do we want to keep interrupts enabled and process
+          AENs after soft reset */
+
+       /* If firmware (SOFT) reset failed, or if all outstanding
+        * commands have not returned, then do a HARD reset.
+        */
+       if (status == QLA_ERROR) {
+               DEBUG2(printk("scsi%ld: %s - Performing hard reset..\n",
+                             ha->host_no, __func__));
+               status = qla4xxx_hard_reset(ha);
+       }
+
+       /* Flush any pending ddb changed AENs */
+       qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
+
+       /* Re-initialize firmware. If successful, function returns
+        * with ISP interrupts enabled */
+       if (status == QLA_SUCCESS) {
+               DEBUG2(printk("scsi%ld: %s - Initializing adapter..\n",
+                             ha->host_no, __func__));
+
+               /* If successful, AF_ONLINE flag set in
+                * qla4xxx_initialize_adapter */
+               status = qla4xxx_initialize_adapter(ha, renew_ddb_list);
+       }
+
+       /* Failed adapter initialization?
+        * Retry reset_ha only if invoked via DPC (DPC_RESET_HA) */
+       if ((test_bit(AF_ONLINE, &ha->flags) == 0) &&
+           (test_bit(DPC_RESET_HA, &ha->dpc_flags))) {
+               /* Adapter initialization failed, see if we can retry
+                * resetting the ha */
+               if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) {
+                       ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES;
+                       DEBUG2(printk("scsi%ld: recover adapter - retrying "
+                                     "(%d) more times\n", ha->host_no,
+                                     ha->retry_reset_ha_cnt));
+                       set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
+                       status = QLA_ERROR;
+               } else {
+                       if (ha->retry_reset_ha_cnt > 0) {
+                               /* Schedule another Reset HA--DPC will retry */
+                               ha->retry_reset_ha_cnt--;
+                               DEBUG2(printk("scsi%ld: recover adapter - "
+                                             "retry remaining %d\n",
+                                             ha->host_no,
+                                             ha->retry_reset_ha_cnt));
+                               status = QLA_ERROR;
+                       }
+
+                       if (ha->retry_reset_ha_cnt == 0) {
+                               /* Recover adapter retries have been exhausted.
+                                * Adapter DEAD */
+                               DEBUG2(printk("scsi%ld: recover adapter "
+                                             "failed - board disabled\n",
+                                             ha->host_no));
+                               qla4xxx_flush_active_srbs(ha);
+                               clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
+                               clear_bit(DPC_RESET_HA, &ha->dpc_flags);
+                               clear_bit(DPC_RESET_HA_DESTROY_DDB_LIST,
+                                         &ha->dpc_flags);
+                               status = QLA_ERROR;
+                       }
+               }
+       } else {
+               clear_bit(DPC_RESET_HA, &ha->dpc_flags);
+               clear_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags);
+               clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
+       }
+
+       ha->adapter_error_count++;
+
+       if (status == QLA_SUCCESS)
+               qla4xxx_enable_intrs(ha);
+
+       DEBUG2(printk("scsi%ld: recover adapter .. DONE\n", ha->host_no));
+       return status;
+}
+
+/**
+ * qla4xxx_do_dpc - dpc routine
+ * @data: in our case pointer to adapter structure
+ *
+ * This routine is a task that is schedule by the interrupt handler
+ * to perform the background processing for interrupts.  We put it
+ * on a task queue that is consumed whenever the scheduler runs; that's
+ * so you can do anything (i.e. put the process to sleep etc).  In fact,
+ * the mid-level tries to sleep when it reaches the driver threshold
+ * "host->can_queue". This can cause a panic if we were in our interrupt code.
+ **/
+static void qla4xxx_do_dpc(void *data)
+{
+       struct scsi_qla_host *ha = (struct scsi_qla_host *) data;
+       struct ddb_entry *ddb_entry, *dtemp;
+
+       DEBUG2(printk("scsi%ld: %s: DPC handler waking up.\n",
+                     ha->host_no, __func__));
+
+       DEBUG2(printk("scsi%ld: %s: ha->flags = 0x%08lx\n",
+                     ha->host_no, __func__, ha->flags));
+       DEBUG2(printk("scsi%ld: %s: ha->dpc_flags = 0x%08lx\n",
+                     ha->host_no, __func__, ha->dpc_flags));
+
+       /* Initialization not yet finished. Don't do anything yet. */
+       if (!test_bit(AF_INIT_DONE, &ha->flags))
+               return;
+
+       if (adapter_up(ha) ||
+           test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
+           test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
+           test_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags)) {
+               if (test_bit(DPC_RESET_HA_DESTROY_DDB_LIST, &ha->dpc_flags))
+                       /*
+                        * dg 09/23 Never initialize ddb list
+                        * once we up and running
+                        * qla4xxx_recover_adapter(ha,
+                        *    REBUILD_DDB_LIST);
+                        */
+                       qla4xxx_recover_adapter(ha, PRESERVE_DDB_LIST);
+
+               if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
+                       qla4xxx_recover_adapter(ha, PRESERVE_DDB_LIST);
+
+               if (test_and_clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
+                       uint8_t wait_time = RESET_INTR_TOV;
+                       unsigned long flags = 0;
+
+                       qla4xxx_flush_active_srbs(ha);
+
+                       spin_lock_irqsave(&ha->hardware_lock, flags);
+                       while ((readw(&ha->reg->ctrl_status) &
+                               (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) {
+                               if (--wait_time == 0)
+                                       break;
+
+                               spin_unlock_irqrestore(&ha->hardware_lock,
+                                                      flags);
+
+                               msleep(1000);
+
+                               spin_lock_irqsave(&ha->hardware_lock, flags);
+                       }
+                       spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+                       if (wait_time == 0)
+                               DEBUG2(printk("scsi%ld: %s: SR|FSR "
+                                             "bit not cleared-- resetting\n",
+                                             ha->host_no, __func__));
+               }
+       }
+
+       /* ---- process AEN? --- */
+       if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
+               qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
+
+       /* ---- Get DHCP IP Address? --- */
+       if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
+               qla4xxx_get_dhcp_ip_address(ha);
+
+       /* ---- relogin device? --- */
+       if (adapter_up(ha) &&
+           test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) {
+               list_for_each_entry_safe(ddb_entry, dtemp,
+                                        &ha->ddb_list, list) {
+                       if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) &&
+                           atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE)
+                               qla4xxx_relogin_device(ha, ddb_entry);
+
+                       /*
+                        * If mbx cmd times out there is no point
+                        * in continuing further.
+                        * With large no of targets this can hang
+                        * the system.
+                        */
+                       if (test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
+                               printk(KERN_WARNING "scsi%ld: %s: "
+                                      "need to reset hba\n",
+                                      ha->host_no, __func__);
+                               break;
+                       }
+               }
+       }
+}
+
+/**
+ * qla4xxx_free_adapter - release the adapter
+ * @ha: pointer to adapter structure
+ **/
+static void qla4xxx_free_adapter(struct scsi_qla_host *ha)
+{
+
+       if (test_bit(AF_INTERRUPTS_ON, &ha->flags)) {
+               /* Turn-off interrupts on the card. */
+               qla4xxx_disable_intrs(ha);
+       }
+
+       /* Kill the kernel thread for this host */
+       if (ha->dpc_thread)
+               destroy_workqueue(ha->dpc_thread);
+
+       /* Issue Soft Reset to put firmware in unknown state */
+       qla4xxx_soft_reset(ha);
+
+       /* Remove timer thread, if present */
+       if (ha->timer_active)
+               qla4xxx_stop_timer(ha);
+
+       /* free extra memory */
+       qla4xxx_mem_free(ha);
+
+       /* Detach interrupts */
+       if (test_and_clear_bit(AF_IRQ_ATTACHED, &ha->flags))
+               free_irq(ha->pdev->irq, ha);
+
+       pci_disable_device(ha->pdev);
+
+}
+
+/***
+ * qla4xxx_iospace_config - maps registers
+ * @ha: pointer to adapter structure
+ *
+ * This routines maps HBA's registers from the pci address space
+ * into the kernel virtual address space for memory mapped i/o.
+ **/
+static int qla4xxx_iospace_config(struct scsi_qla_host *ha)
+{
+       unsigned long pio, pio_len, pio_flags;
+       unsigned long mmio, mmio_len, mmio_flags;
+
+       pio = pci_resource_start(ha->pdev, 0);
+       pio_len = pci_resource_len(ha->pdev, 0);
+       pio_flags = pci_resource_flags(ha->pdev, 0);
+       if (pio_flags & IORESOURCE_IO) {
+               if (pio_len < MIN_IOBASE_LEN) {
+                       dev_warn(&ha->pdev->dev,
+                               "Invalid PCI I/O region size\n");
+                       pio = 0;
+               }
+       } else {
+               dev_warn(&ha->pdev->dev, "region #0 not a PIO resource\n");
+               pio = 0;
+       }
+
+       /* Use MMIO operations for all accesses. */
+       mmio = pci_resource_start(ha->pdev, 1);
+       mmio_len = pci_resource_len(ha->pdev, 1);
+       mmio_flags = pci_resource_flags(ha->pdev, 1);
+
+       if (!(mmio_flags & IORESOURCE_MEM)) {
+               dev_err(&ha->pdev->dev,
+                       "region #0 not an MMIO resource, aborting\n");
+
+               goto iospace_error_exit;
+       }
+       if (mmio_len < MIN_IOBASE_LEN) {
+               dev_err(&ha->pdev->dev,
+                       "Invalid PCI mem region size, aborting\n");
+               goto iospace_error_exit;
+       }
+
+       if (pci_request_regions(ha->pdev, DRIVER_NAME)) {
+               dev_warn(&ha->pdev->dev,
+                       "Failed to reserve PIO/MMIO regions\n");
+
+               goto iospace_error_exit;
+       }
+
+       ha->pio_address = pio;
+       ha->pio_length = pio_len;
+       ha->reg = ioremap(mmio, MIN_IOBASE_LEN);
+       if (!ha->reg) {
+               dev_err(&ha->pdev->dev,
+                       "cannot remap MMIO, aborting\n");
+
+               goto iospace_error_exit;
+       }
+
+       return 0;
+
+iospace_error_exit:
+       return -ENOMEM;
+}
+
+/**
+ * qla4xxx_probe_adapter - callback function to probe HBA
+ * @pdev: pointer to pci_dev structure
+ * @pci_device_id: pointer to pci_device entry
+ *
+ * This routine will probe for Qlogic 4xxx iSCSI host adapters.
+ * It returns zero if successful. It also initializes all data necessary for
+ * the driver.
+ **/
+static int __devinit qla4xxx_probe_adapter(struct pci_dev *pdev,
+                                          const struct pci_device_id *ent)
+{
+       int ret = -ENODEV, status;
+       struct Scsi_Host *host;
+       struct scsi_qla_host *ha;
+       struct ddb_entry *ddb_entry, *ddbtemp;
+       uint8_t init_retry_count = 0;
+       char buf[34];
+
+       if (pci_enable_device(pdev))
+               return -1;
+
+       host = scsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha));
+       if (host == NULL) {
+               printk(KERN_WARNING
+                      "qla4xxx: Couldn't allocate host from scsi layer!\n");
+               goto probe_disable_device;
+       }
+
+       /* Clear our data area */
+       ha = (struct scsi_qla_host *) host->hostdata;
+       memset(ha, 0, sizeof(*ha));
+
+       /* Save the information from PCI BIOS.  */
+       ha->pdev = pdev;
+       ha->host = host;
+       ha->host_no = host->host_no;
+
+       /* Configure PCI I/O space. */
+       ret = qla4xxx_iospace_config(ha);
+       if (ret)
+               goto probe_failed;
+
+       dev_info(&ha->pdev->dev, "Found an ISP%04x, irq %d, iobase 0x%p\n",
+                  pdev->device, pdev->irq, ha->reg);
+
+       qla4xxx_config_dma_addressing(ha);
+
+       /* Initialize lists and spinlocks. */
+       INIT_LIST_HEAD(&ha->ddb_list);
+       INIT_LIST_HEAD(&ha->free_srb_q);
+
+       mutex_init(&ha->mbox_sem);
+       init_waitqueue_head(&ha->mailbox_wait_queue);
+
+       spin_lock_init(&ha->hardware_lock);
+       spin_lock_init(&ha->list_lock);
+
+       /* Allocate dma buffers */
+       if (qla4xxx_mem_alloc(ha)) {
+               dev_warn(&ha->pdev->dev,
+                          "[ERROR] Failed to allocate memory for adapter\n");
+
+               ret = -ENOMEM;
+               goto probe_failed;
+       }
+
+       /*
+        * Initialize the Host adapter request/response queues and
+        * firmware
+        * NOTE: interrupts enabled upon successful completion
+        */
+       status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST);
+       while (status == QLA_ERROR && init_retry_count++ < MAX_INIT_RETRIES) {
+               DEBUG2(printk("scsi: %s: retrying adapter initialization "
+                             "(%d)\n", __func__, init_retry_count));
+               qla4xxx_soft_reset(ha);
+               status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST);
+       }
+       if (status == QLA_ERROR) {
+               dev_warn(&ha->pdev->dev, "Failed to initialize adapter\n");
+
+               ret = -ENODEV;
+               goto probe_failed;
+       }
+
+       host->cmd_per_lun = 3;
+       host->max_channel = 0;
+       host->max_lun = MAX_LUNS - 1;
+       host->max_id = MAX_TARGETS;
+       host->max_cmd_len = IOCB_MAX_CDB_LEN;
+       host->can_queue = MAX_SRBS ;
+       host->transportt = qla4xxx_scsi_transport;
+
+        ret = scsi_init_shared_tag_map(host, MAX_SRBS);
+        if (ret) {
+                dev_warn(&ha->pdev->dev, "scsi_init_shared_tag_map failed");
+                goto probe_failed;
+        }
+
+       /* Startup the kernel thread for this host adapter. */
+       DEBUG2(printk("scsi: %s: Starting kernel thread for "
+                     "qla4xxx_dpc\n", __func__));
+       sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no);
+       ha->dpc_thread = create_singlethread_workqueue(buf);
+       if (!ha->dpc_thread) {
+               dev_warn(&ha->pdev->dev, "Unable to start DPC thread!\n");
+               ret = -ENODEV;
+               goto probe_failed;
+       }
+       INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc, ha);
+
+       ret = request_irq(pdev->irq, qla4xxx_intr_handler,
+                         SA_INTERRUPT|SA_SHIRQ, "qla4xxx", ha);
+       if (ret) {
+               dev_warn(&ha->pdev->dev, "Failed to reserve interrupt %d"
+                       " already in use.\n", pdev->irq);
+               goto probe_failed;
+       }
+       set_bit(AF_IRQ_ATTACHED, &ha->flags);
+       host->irq = pdev->irq;
+       DEBUG(printk("scsi%d: irq %d attached\n", ha->host_no, ha->pdev->irq));
+
+       qla4xxx_enable_intrs(ha);
+
+       /* Start timer thread. */
+       qla4xxx_start_timer(ha, qla4xxx_timer, 1);
+
+       set_bit(AF_INIT_DONE, &ha->flags);
+
+       pci_set_drvdata(pdev, ha);
+
+       ret = scsi_add_host(host, &pdev->dev);
+       if (ret)
+               goto probe_failed;
+
+       /* Update transport device information for all devices. */
+       list_for_each_entry_safe(ddb_entry, ddbtemp, &ha->ddb_list, list) {
+               if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE)
+                       if (qla4xxx_add_sess(ddb_entry))
+                               goto remove_host;
+       }
+
+       printk(KERN_INFO
+              " QLogic iSCSI HBA Driver version: %s\n"
+              "  QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n",
+              qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev),
+              ha->host_no, ha->firmware_version[0], ha->firmware_version[1],
+              ha->patch_number, ha->build_number);
+
+       return 0;
+
+remove_host:
+       qla4xxx_free_ddb_list(ha);
+       scsi_remove_host(host);
+
+probe_failed:
+       qla4xxx_free_adapter(ha);
+       scsi_host_put(ha->host);
+
+probe_disable_device:
+       pci_disable_device(pdev);
+
+       return ret;
+}
+
+/**
+ * qla4xxx_remove_adapter - calback function to remove adapter.
+ * @pci_dev: PCI device pointer
+ **/
+static void __devexit qla4xxx_remove_adapter(struct pci_dev *pdev)
+{
+       struct scsi_qla_host *ha;
+
+       ha = pci_get_drvdata(pdev);
+
+       /* remove devs from iscsi_sessions to scsi_devices */
+       qla4xxx_free_ddb_list(ha);
+
+       scsi_remove_host(ha->host);
+
+       qla4xxx_free_adapter(ha);
+
+       scsi_host_put(ha->host);
+
+       pci_set_drvdata(pdev, NULL);
+}
+
+/**
+ * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method.
+ * @ha: HA context
+ *
+ * At exit, the @ha's flags.enable_64bit_addressing set to indicated
+ * supported addressing method.
+ */
+void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha)
+{
+       int retval;
+
+       /* Update our PCI device dma_mask for full 64 bit mask */
+       if (pci_set_dma_mask(ha->pdev, DMA_64BIT_MASK) == 0) {
+               if (pci_set_consistent_dma_mask(ha->pdev, DMA_64BIT_MASK)) {
+                       dev_dbg(&ha->pdev->dev,
+                                 "Failed to set 64 bit PCI consistent mask; "
+                                  "using 32 bit.\n");
+                       retval = pci_set_consistent_dma_mask(ha->pdev,
+                                                            DMA_32BIT_MASK);
+               }
+       } else
+               retval = pci_set_dma_mask(ha->pdev, DMA_32BIT_MASK);
+}
+
+static int qla4xxx_slave_alloc(struct scsi_device *sdev)
+{
+       struct iscsi_cls_session *sess = starget_to_session(sdev->sdev_target);
+       struct ddb_entry *ddb = sess->dd_data;
+
+       sdev->hostdata = ddb;
+       sdev->tagged_supported = 1;
+       scsi_activate_tcq(sdev, sdev->host->can_queue);
+       return 0;
+}
+
+static int qla4xxx_slave_configure(struct scsi_device *sdev)
+{
+       sdev->tagged_supported = 1;
+       return 0;
+}
+
+static void qla4xxx_slave_destroy(struct scsi_device *sdev)
+{
+       scsi_deactivate_tcq(sdev, 1);
+}
+
+/**
+ * qla4xxx_del_from_active_array - returns an active srb
+ * @ha: Pointer to host adapter structure.
+ * @index: index into to the active_array
+ *
+ * This routine removes and returns the srb at the specified index
+ **/
+struct srb * qla4xxx_del_from_active_array(struct scsi_qla_host *ha, uint32_t index)
+{
+       struct srb *srb = NULL;
+       struct scsi_cmnd *cmd;
+
+       if (!(cmd = scsi_host_find_tag(ha->host, index)))
+               return srb;
+
+       if (!(srb = (struct srb *)cmd->host_scribble))
+               return srb;
+
+       /* update counters */
+       if (srb->flags & SRB_DMA_VALID) {
+               ha->req_q_count += srb->iocb_cnt;
+               ha->iocb_cnt -= srb->iocb_cnt;
+               if (srb->cmd)
+                       srb->cmd->host_scribble = NULL;
+       }
+       return srb;
+}
+
+/**
+ * qla4xxx_soft_reset - performs a SOFT RESET of hba.
+ * @ha: Pointer to host adapter structure.
+ **/
+int qla4xxx_soft_reset(struct scsi_qla_host *ha)
+{
+
+       DEBUG2(printk(KERN_WARNING "scsi%ld: %s: chip reset!\n", ha->host_no,
+                     __func__));
+       if (test_bit(AF_TOPCAT_CHIP_PRESENT, &ha->flags)) {
+               int status = QLA_ERROR;
+
+               if ((qla4010_soft_reset(ha) == QLA_SUCCESS) &&
+                   (qla4xxx_topcat_reset(ha) == QLA_SUCCESS) &&
+                   (qla4010_soft_reset(ha) == QLA_SUCCESS) )
+                       status = QLA_SUCCESS;
+               return status;
+       } else
+               return qla4010_soft_reset(ha);
+}
+
+/**
+ * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware
+ * @ha: actual ha whose done queue will contain the comd returned by firmware.
+ * @cmd: Scsi Command to wait on.
+ *
+ * This routine waits for the command to be returned by the Firmware
+ * for some max time.
+ **/
+static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha,
+                                     struct scsi_cmnd *cmd)
+{
+       int done = 0;
+       struct srb *rp;
+       uint32_t max_wait_time = EH_WAIT_CMD_TOV;
+
+       do {
+               /* Checking to see if its returned to OS */
+               rp = (struct srb *) cmd->SCp.ptr;
+               if (rp == NULL) {
+                       done++;
+                       break;
+               }
+
+               msleep(2000);
+       } while (max_wait_time--);
+
+       return done;
+}
+
+/**
+ * qla4xxx_wait_for_hba_online - waits for HBA to come online
+ * @ha: Pointer to host adapter structure
+ **/
+static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha)
+{
+       unsigned long wait_online;
+
+       wait_online = jiffies + (30 * HZ);
+       while (time_before(jiffies, wait_online)) {
+
+               if (adapter_up(ha))
+                       return QLA_SUCCESS;
+               else if (ha->retry_reset_ha_cnt == 0)
+                       return QLA_ERROR;
+
+               msleep(2000);
+       }
+
+       return QLA_ERROR;
+}
+
+/**
+ * qla4xxx_eh_wait_for_active_target_commands - wait for active cmds to finish.
+ * @ha: pointer to to HBA
+ * @t: target id
+ * @l: lun id
+ *
+ * This function waits for all outstanding commands to a lun to complete. It
+ * returns 0 if all pending commands are returned and 1 otherwise.
+ **/
+static int qla4xxx_eh_wait_for_active_target_commands(struct scsi_qla_host *ha,
+                                                int t, int l)
+{
+       int cnt;
+       int status = 0;
+       struct scsi_cmnd *cmd;
+
+       /*
+        * Waiting for all commands for the designated target in the active
+        * array
+        */
+       for (cnt = 0; cnt < ha->host->can_queue; cnt++) {
+               cmd = scsi_host_find_tag(ha->host, cnt);
+               if (cmd && cmd->device->id == t && cmd->device->lun == l) {
+                       if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
+                               status++;
+                               break;
+                       }
+               }
+       }
+       return status;
+}
+
+/**
+ * qla4xxx_eh_device_reset - callback for target reset.
+ * @cmd: Pointer to Linux's SCSI command structure
+ *
+ * This routine is called by the Linux OS to reset all luns on the
+ * specified target.
+ **/
+static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd)
+{
+       struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
+       struct ddb_entry *ddb_entry = cmd->device->hostdata;
+       struct srb *sp;
+       int ret = FAILED, stat;
+
+       sp = (struct srb *) cmd->SCp.ptr;
+       if (!sp || !ddb_entry)
+               return ret;
+
+       dev_info(&ha->pdev->dev,
+                  "scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha->host_no,
+                  cmd->device->channel, cmd->device->id, cmd->device->lun);
+
+       DEBUG2(printk(KERN_INFO
+                     "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x,"
+                     "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no,
+                     cmd, jiffies, cmd->timeout_per_command / HZ,
+                     ha->dpc_flags, cmd->result, cmd->allowed));
+
+       /* FIXME: wait for hba to go online */
+       stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun);
+       if (stat != QLA_SUCCESS) {
+               dev_info(&ha->pdev->dev, "DEVICE RESET FAILED. %d\n", stat);
+               goto eh_dev_reset_done;
+       }
+
+       /* Send marker. */
+       ha->marker_needed = 1;
+
+       /*
+        * If we are coming down the EH path, wait for all commands to complete
+        * for the device.
+        */
+       if (cmd->device->host->shost_state == SHOST_RECOVERY) {
+               if (qla4xxx_eh_wait_for_active_target_commands(ha,
+                                                         cmd->device->id,
+                                                         cmd->device->lun)){
+                       dev_info(&ha->pdev->dev,
+                                  "DEVICE RESET FAILED - waiting for "
+                                  "commands.\n");
+                       goto eh_dev_reset_done;
+               }
+       }
+
+       dev_info(&ha->pdev->dev,
+                  "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n",
+                  ha->host_no, cmd->device->channel, cmd->device->id,
+                  cmd->device->lun);
+
+       ret = SUCCESS;
+
+eh_dev_reset_done:
+
+       return ret;
+}
+
+/**
+ * qla4xxx_eh_host_reset - kernel callback
+ * @cmd: Pointer to Linux's SCSI command structure
+ *
+ * This routine is invoked by the Linux kernel to perform fatal error
+ * recovery on the specified adapter.
+ **/
+static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd)
+{
+       int return_status = FAILED;
+       struct scsi_qla_host *ha;
+
+       ha = (struct scsi_qla_host *) cmd->device->host->hostdata;
+
+       dev_info(&ha->pdev->dev,
+                  "scsi(%ld:%d:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no,
+                  cmd->device->channel, cmd->device->id, cmd->device->lun);
+
+       if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) {
+               DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host.  Adapter "
+                             "DEAD.\n", ha->host_no, cmd->device->channel,
+                             __func__));
+
+               return FAILED;
+       }
+
+       if (qla4xxx_recover_adapter(ha, PRESERVE_DDB_LIST) == QLA_SUCCESS) {
+               return_status = SUCCESS;
+       }
+
+       dev_info(&ha->pdev->dev, "HOST RESET %s.\n",
+                  return_status == FAILED ? "FAILED" : "SUCCEDED");
+
+       return return_status;
+}
+
+
+static struct pci_device_id qla4xxx_pci_tbl[] = {
+       {
+               .vendor         = PCI_VENDOR_ID_QLOGIC,
+               .device         = PCI_DEVICE_ID_QLOGIC_ISP4010,
+               .subvendor      = PCI_ANY_ID,
+               .subdevice      = PCI_ANY_ID,
+       },
+       {
+               .vendor         = PCI_VENDOR_ID_QLOGIC,
+               .device         = PCI_DEVICE_ID_QLOGIC_ISP4022,
+               .subvendor      = PCI_ANY_ID,
+               .subdevice      = PCI_ANY_ID,
+       },
+       {0, 0},
+};
+MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl);
+
+struct pci_driver qla4xxx_pci_driver = {
+       .name           = DRIVER_NAME,
+       .id_table       = qla4xxx_pci_tbl,
+       .probe          = qla4xxx_probe_adapter,
+       .remove         = qla4xxx_remove_adapter,
+};
+
+static int __init qla4xxx_module_init(void)
+{
+       int ret;
+
+       /* Allocate cache for SRBs. */
+       srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0,
+                                      SLAB_HWCACHE_ALIGN, NULL, NULL);
+       if (srb_cachep == NULL) {
+               printk(KERN_ERR
+                      "%s: Unable to allocate SRB cache..."
+                      "Failing load!\n", DRIVER_NAME);
+               ret = -ENOMEM;
+               goto no_srp_cache;
+       }
+
+       /* Derive version string. */
+       strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION);
+       if (extended_error_logging)
+               strcat(qla4xxx_version_str, "-debug");
+
+       qla4xxx_scsi_transport =
+               iscsi_register_transport(&qla4xxx_iscsi_transport);
+       if (!qla4xxx_scsi_transport){
+               ret = -ENODEV;
+               goto release_srb_cache;
+       }
+
+       printk(KERN_INFO "QLogic iSCSI HBA Driver\n");
+       ret = pci_register_driver(&qla4xxx_pci_driver);
+       if (ret)
+               goto unregister_transport;
+
+       printk(KERN_INFO "QLogic iSCSI HBA Driver\n");
+       return 0;
+unregister_transport:
+       iscsi_unregister_transport(&qla4xxx_iscsi_transport);
+release_srb_cache:
+       kmem_cache_destroy(srb_cachep);
+no_srp_cache:
+       return ret;
+}
+
+static void __exit qla4xxx_module_exit(void)
+{
+       pci_unregister_driver(&qla4xxx_pci_driver);
+       iscsi_unregister_transport(&qla4xxx_iscsi_transport);
+       kmem_cache_destroy(srb_cachep);
+}
+
+module_init(qla4xxx_module_init);
+module_exit(qla4xxx_module_exit);
+
+MODULE_AUTHOR("QLogic Corporation");
+MODULE_DESCRIPTION("QLogic iSCSI HBA Driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(QLA4XXX_DRIVER_VERSION);
diff --git a/drivers/scsi/qla4xxx/ql4_version.h b/drivers/scsi/qla4xxx/ql4_version.h
new file mode 100644 (file)
index 0000000..b3fe7e6
--- /dev/null
@@ -0,0 +1,13 @@
+/*
+ * QLogic iSCSI HBA Driver
+ * Copyright (c)  2003-2006 QLogic Corporation
+ *
+ * See LICENSE.qla4xxx for copyright and licensing details.
+ */
+
+#define QLA4XXX_DRIVER_VERSION "5.00.05b9-k"
+
+#define QL4_DRIVER_MAJOR_VER   5
+#define QL4_DRIVER_MINOR_VER   0
+#define QL4_DRIVER_PATCH_VER   5
+#define QL4_DRIVER_BETA_VER    9