[SCSI] arcmsr: updates (1.20.00.15)
Nick Cheng [Tue, 5 Feb 2008 07:53:24 +0000 (23:53 -0800)]
- add arcmsr_enable_eoi_mode()and readl(reg->iop2drv_doorbell_reg) in
  arcmsr_handle_hbb_isr() on adapter Type B in case of the doorbell
  interrupt clearance is cached

- add conditional declaration for arcmsr_pci_error_detected() and
  arcmsr_pci_slot_reset

- check if the sg list member number exceeds arcmsr default limit in
  arcmsr_build_ccb()

- change the returned value type of arcmsr_build_ccb()from "void" to
  "int" returns FAILED in arcmsr_queue_command()

- modify arcmsr_drain_donequeue() to ignore unknown command and let
  kernel process command timeout.  This could handle IO request violating
  maximum segments, i.e.  Linux XFS over DM-CRYPT.  Thanks to Milan Broz's
  comments <mbroz@redhat.com>

- fix the release of dma memory for type B in arcmsr_free_ccb_pool()

- fix the arcmsr_polling_hbb_ccbdone()

Signed-off-by: Nick Cheng <nick.cheng@areca.com.tw>
Cc: Milan Broz <mbroz@redhat.com>
Cc: <thenzl@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

Documentation/scsi/ChangeLog.arcmsr
drivers/scsi/arcmsr/arcmsr.h
drivers/scsi/arcmsr/arcmsr_hba.c

index cd8403a..de2bcac 100644 (file)
 **                                             2. modify the arcmsr_pci_slot_reset function
 **                                             3. modify the arcmsr_pci_ers_disconnect_forepart function
 **                                             4. modify the arcmsr_pci_ers_need_reset_forepart function
+** 1.20.00.15   09/27/2007      Erich Chen & Nick Cheng
+**                                             1. add arcmsr_enable_eoi_mode() on adapter Type B
+**                                             2. add readl(reg->iop2drv_doorbell_reg) in arcmsr_handle_hbb_isr()
+**                                             in case of the doorbell interrupt clearance is cached
+** 1.20.00.15   10/01/2007      Erich Chen & Nick Cheng
+**                                             1. modify acb->devstate[i][j]
+**                                             as ARECA_RAID_GOOD instead of
+**                                             ARECA_RAID_GONE in arcmsr_alloc_ccb_pool
+** 1.20.00.15   11/06/2007       Erich Chen & Nick Cheng
+**                                             1. add conditional declaration for
+**                                             arcmsr_pci_error_detected() and
+**                                             arcmsr_pci_slot_reset
+** 1.20.00.15  11/23/2007       Erich Chen & Nick Cheng
+**                                             1.check if the sg list member number
+**                                             exceeds arcmsr default limit in arcmsr_build_ccb()
+**                                             2.change the returned value type of arcmsr_build_ccb()
+**                                             from "void" to "int"
+**                                             3.add the conditional check if arcmsr_build_ccb()
+**                                             returns FAILED
+** 1.20.00.15  12/04/2007       Erich Chen & Nick Cheng
+**                                             1. modify arcmsr_drain_donequeue() to ignore unknown
+**                                             command and let kernel process command timeout.
+**                                             This could handle IO request violating max. segments
+**                                             while Linux XFS over DM-CRYPT.
+**                                             Thanks to Milan Broz's comments <mbroz@redhat.com>
+** 1.20.00.15  12/24/2007       Erich Chen & Nick Cheng
+**                                             1.fix the portability problems
+**                                             2.fix type B where we should _not_ iounmap() acb->pmu;
+**                                             it's not ioremapped.
+**                                             3.add return -ENOMEM if ioremap() fails
+**                                             4.transfer IS_SG64_ADDR w/ cpu_to_le32()
+**                                             in arcmsr_build_ccb
+**                                             5. modify acb->devstate[i][j] as ARECA_RAID_GONE instead of
+**                                             ARECA_RAID_GOOD in arcmsr_alloc_ccb_pool()
+**                                             6.fix arcmsr_cdb->Context as (unsigned long)arcmsr_cdb
+**                                             7.add the checking state of
+**                                             (outbound_intstatus & ARCMSR_MU_OUTBOUND_HANDLE_INT) == 0
+**                                             in arcmsr_handle_hba_isr
+**                                             8.replace pci_alloc_consistent()/pci_free_consistent() with kmalloc()/kfree() in arcmsr_iop_message_xfer()
+**                                             9. fix the release of dma memory for type B in arcmsr_free_ccb_pool()
+**                                             10.fix the arcmsr_polling_hbb_ccbdone()
 **************************************************************************
index a67e29f..5778650 100644 (file)
@@ -48,7 +48,7 @@ struct class_device_attribute;
 /*The limit of outstanding scsi command that firmware can handle*/
 #define ARCMSR_MAX_OUTSTANDING_CMD                                             256
 #define ARCMSR_MAX_FREECCB_NUM                                                 320
-#define ARCMSR_DRIVER_VERSION               "Driver Version 1.20.00.15 2007/08/30"
+#define ARCMSR_DRIVER_VERSION               "Driver Version 1.20.00.15 2007/12/24"
 #define ARCMSR_SCSI_INITIATOR_ID                                               255
 #define ARCMSR_MAX_XFER_SECTORS                                                        512
 #define ARCMSR_MAX_XFER_SECTORS_B                                              4096
@@ -248,6 +248,7 @@ struct FIRMWARE_INFO
 #define ARCMSR_MESSAGE_START_BGRB                    0x00060008
 #define ARCMSR_MESSAGE_START_DRIVER_MODE             0x000E0008
 #define ARCMSR_MESSAGE_SET_POST_WINDOW               0x000F0008
+#define ARCMSR_MESSAGE_ACTIVE_EOI_MODE             0x00100008
 /* ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK */
 #define ARCMSR_MESSAGE_FIRMWARE_OK                   0x80000000
 /* ioctl transfer */
@@ -256,6 +257,7 @@ struct FIRMWARE_INFO
 #define ARCMSR_DRV2IOP_DATA_READ_OK                   0x00000002
 #define ARCMSR_DRV2IOP_CDB_POSTED                     0x00000004
 #define ARCMSR_DRV2IOP_MESSAGE_CMD_POSTED             0x00000008
+#define ARCMSR_DRV2IOP_END_OF_INTERRUPT                0x00000010
 
 /* data tunnel buffer between user space program and its firmware */
 /* user space data to iop 128bytes */
index f4a202e..4f9ff32 100644 (file)
@@ -315,9 +315,6 @@ static int arcmsr_alloc_ccb_pool(struct AdapterControlBlock *acb)
                                (0x20 - ((unsigned long)dma_coherent_handle & 0x1F));
                }
 
-               reg = (struct MessageUnit_B *)(dma_coherent +
-               ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock));
-
                dma_addr = dma_coherent_handle;
                ccb_tmp = (struct CommandControlBlock *)dma_coherent;
                for (i = 0; i < ARCMSR_MAX_FREECCB_NUM; i++) {
@@ -371,8 +368,8 @@ static int arcmsr_alloc_ccb_pool(struct AdapterControlBlock *acb)
 
 out:
        dma_free_coherent(&acb->pdev->dev,
-               ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock) + 0x20,
-               acb->dma_coherent, acb->dma_coherent_handle);
+               (ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock) + 0x20 +
+               sizeof(struct MessageUnit_B)), acb->dma_coherent, acb->dma_coherent_handle);
        return -ENOMEM;
 }
 
@@ -509,6 +506,7 @@ static uint8_t arcmsr_hbb_wait_msgint_ready(struct AdapterControlBlock *acb)
                                & ARCMSR_IOP2DRV_MESSAGE_CMD_DONE) {
                                writel(ARCMSR_MESSAGE_INT_CLEAR_PATTERN
                                        , reg->iop2drv_doorbell_reg);
+                               writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell_reg);
                                return 0x00;
                        }
                        msleep(10);
@@ -748,6 +746,7 @@ static void arcmsr_drain_donequeue(struct AdapterControlBlock *acb, uint32_t fla
                                , ccb->startdone
                                , atomic_read(&acb->ccboutstandingcount));
                }
+       else
        arcmsr_report_ccb_state(acb, ccb, flag_ccb);
 }
 
@@ -886,7 +885,7 @@ static void arcmsr_enable_outbound_ints(struct AdapterControlBlock *acb, \
        }
 }
 
-static void arcmsr_build_ccb(struct AdapterControlBlock *acb,
+static int arcmsr_build_ccb(struct AdapterControlBlock *acb,
        struct CommandControlBlock *ccb, struct scsi_cmnd *pcmd)
 {
        struct ARCMSR_CDB *arcmsr_cdb = (struct ARCMSR_CDB *)&ccb->arcmsr_cdb;
@@ -906,6 +905,8 @@ static void arcmsr_build_ccb(struct AdapterControlBlock *acb,
        memcpy(arcmsr_cdb->Cdb, pcmd->cmnd, pcmd->cmd_len);
 
        nseg = scsi_dma_map(pcmd);
+       if (nseg > ARCMSR_MAX_SG_ENTRIES)
+               return FAILED;
        BUG_ON(nseg < 0);
 
        if (nseg) {
@@ -946,6 +947,7 @@ static void arcmsr_build_ccb(struct AdapterControlBlock *acb,
                arcmsr_cdb->Flags |= ARCMSR_CDB_FLAG_WRITE;
                ccb->ccb_flags |= CCB_FLAG_WRITE;
        }
+       return SUCCESS;
 }
 
 static void arcmsr_post_ccb(struct AdapterControlBlock *acb, struct CommandControlBlock *ccb)
@@ -1036,18 +1038,22 @@ static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb)
        switch (acb->adapter_type) {
        case ACB_ADAPTER_TYPE_A: {
                iounmap(acb->pmuA);
+               dma_free_coherent(&acb->pdev->dev,
+               ARCMSR_MAX_FREECCB_NUM * sizeof (struct CommandControlBlock) + 0x20,
+               acb->dma_coherent,
+               acb->dma_coherent_handle);
                break;
        }
        case ACB_ADAPTER_TYPE_B: {
                struct MessageUnit_B *reg = acb->pmuB;
                iounmap(reg->drv2iop_doorbell_reg - ARCMSR_DRV2IOP_DOORBELL);
                iounmap(reg->ioctl_wbuffer_reg - ARCMSR_IOCTL_WBUFFER);
+               dma_free_coherent(&acb->pdev->dev,
+               (ARCMSR_MAX_FREECCB_NUM * sizeof(struct CommandControlBlock) + 0x20 +
+               sizeof(struct MessageUnit_B)), acb->dma_coherent, acb->dma_coherent_handle);
        }
        }
-       dma_free_coherent(&acb->pdev->dev,
-               ARCMSR_MAX_FREECCB_NUM * sizeof (struct CommandControlBlock) + 0x20,
-               acb->dma_coherent,
-               acb->dma_coherent_handle);
+
 }
 
 void arcmsr_iop_message_read(struct AdapterControlBlock *acb)
@@ -1273,7 +1279,9 @@ static int arcmsr_handle_hbb_isr(struct AdapterControlBlock *acb)
                return 1;
 
        writel(~outbound_doorbell, reg->iop2drv_doorbell_reg);
-
+       /*in case the last action of doorbell interrupt clearance is cached, this action can push HW to write down the clear bit*/
+       readl(reg->iop2drv_doorbell_reg);
+       writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell_reg);
        if (outbound_doorbell & ARCMSR_IOP2DRV_DATA_WRITE_OK)   {
                arcmsr_iop2drv_data_wrote_handle(acb);
        }
@@ -1380,12 +1388,13 @@ static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, \
 
        case ARCMSR_MESSAGE_READ_RQBUFFER: {
                unsigned long *ver_addr;
-               dma_addr_t buf_handle;
                uint8_t *pQbuffer, *ptmpQbuffer;
                int32_t allxfer_len = 0;
+               void *tmp;
 
-               ver_addr = pci_alloc_consistent(acb->pdev, 1032, &buf_handle);
-               if (!ver_addr) {
+               tmp = kmalloc(1032, GFP_KERNEL|GFP_DMA);
+               ver_addr = (unsigned long *)tmp;
+               if (!tmp) {
                        retvalue = ARCMSR_MESSAGE_FAIL;
                        goto message_out;
                }
@@ -1421,18 +1430,19 @@ static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, \
                memcpy(pcmdmessagefld->messagedatabuffer, (uint8_t *)ver_addr, allxfer_len);
                pcmdmessagefld->cmdmessage.Length = allxfer_len;
                pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
-               pci_free_consistent(acb->pdev, 1032, ver_addr, buf_handle);
+               kfree(tmp);
                }
                break;
 
        case ARCMSR_MESSAGE_WRITE_WQBUFFER: {
                unsigned long *ver_addr;
-               dma_addr_t buf_handle;
                int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex;
                uint8_t *pQbuffer, *ptmpuserbuffer;
+               void *tmp;
 
-               ver_addr = pci_alloc_consistent(acb->pdev, 1032, &buf_handle);
-               if (!ver_addr) {
+               tmp = kmalloc(1032, GFP_KERNEL|GFP_DMA);
+               ver_addr = (unsigned long *)tmp;
+               if (!tmp) {
                        retvalue = ARCMSR_MESSAGE_FAIL;
                        goto message_out;
                }
@@ -1482,7 +1492,7 @@ static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, \
                                retvalue = ARCMSR_MESSAGE_FAIL;
                        }
                        }
-                       pci_free_consistent(acb->pdev, 1032, ver_addr, buf_handle);
+                       kfree(tmp);
                }
                break;
 
@@ -1682,8 +1692,11 @@ static int arcmsr_queue_command(struct scsi_cmnd *cmd,
        ccb = arcmsr_get_freeccb(acb);
        if (!ccb)
                return SCSI_MLQUEUE_HOST_BUSY;
-
-       arcmsr_build_ccb(acb, ccb, cmd);
+       if ( arcmsr_build_ccb( acb, ccb, cmd ) == FAILED ) {
+               cmd->result = (DID_ERROR << 16) | (RESERVATION_CONFLICT << 1);
+               cmd->scsi_done(cmd);
+               return 0;
+       }
        arcmsr_post_ccb(acb, ccb);
        return 0;
 }
@@ -1844,7 +1857,7 @@ static void arcmsr_polling_hba_ccbdone(struct AdapterControlBlock *acb,
        }
 }
 
-static void arcmsr_polling_hbb_ccbdone(struct AdapterControlBlock *acb, \
+static void arcmsr_polling_hbb_ccbdone(struct AdapterControlBlock *acb,
                                        struct CommandControlBlock *poll_ccb)
 {
                struct MessageUnit_B *reg = acb->pmuB;
@@ -1878,7 +1891,7 @@ static void arcmsr_polling_hbb_ccbdone(struct AdapterControlBlock *acb, \
       (acb->vir2phy_offset + (flag_ccb << 5));/*frame must be 32 bytes aligned*/
                        poll_ccb_done = (ccb == poll_ccb) ? 1:0;
                        if ((ccb->acb != acb) || (ccb->startdone != ARCMSR_CCB_START)) {
-                               if (ccb->startdone == ARCMSR_CCB_ABORTED) {
+                               if ((ccb->startdone == ARCMSR_CCB_ABORTED) || (ccb == poll_ccb)) {
                                        printk(KERN_NOTICE "arcmsr%d: \
                scsi id = %d lun = %d ccb = '0x%p' poll command abort successfully \n"
                                                ,acb->host->host_no
@@ -1901,7 +1914,7 @@ static void arcmsr_polling_hbb_ccbdone(struct AdapterControlBlock *acb, \
                }       /*drain reply FIFO*/
 }
 
-static void arcmsr_polling_ccbdone(struct AdapterControlBlock *acb, \
+static void arcmsr_polling_ccbdone(struct AdapterControlBlock *acb,
                                        struct CommandControlBlock *poll_ccb)
 {
        switch (acb->adapter_type) {
@@ -2026,6 +2039,7 @@ static void arcmsr_wait_firmware_ready(struct AdapterControlBlock *acb)
                do {
                        firmware_state = readl(reg->iop2drv_doorbell_reg);
                } while ((firmware_state & ARCMSR_MESSAGE_FIRMWARE_OK) == 0);
+               writel(ARCMSR_DRV2IOP_END_OF_INTERRUPT, reg->drv2iop_doorbell_reg);
                }
                break;
        }
@@ -2090,19 +2104,39 @@ static void arcmsr_clear_doorbell_queue_buffer(struct AdapterControlBlock *acb)
        }
 }
 
+static void arcmsr_enable_eoi_mode(struct AdapterControlBlock *acb)
+{
+       switch (acb->adapter_type) {
+       case ACB_ADAPTER_TYPE_A:
+               return;
+       case ACB_ADAPTER_TYPE_B:
+               {
+                       struct MessageUnit_B *reg = acb->pmuB;
+                       writel(ARCMSR_MESSAGE_ACTIVE_EOI_MODE, reg->drv2iop_doorbell_reg);
+                       if(arcmsr_hbb_wait_msgint_ready(acb)) {
+                               printk(KERN_NOTICE "ARCMSR IOP enables EOI_MODE TIMEOUT");
+                               return;
+                       }
+               }
+               break;
+       }
+       return;
+}
+
 static void arcmsr_iop_init(struct AdapterControlBlock *acb)
 {
        uint32_t intmask_org;
 
-       arcmsr_wait_firmware_ready(acb);
-       arcmsr_iop_confirm(acb);
        /* disable all outbound interrupt */
        intmask_org = arcmsr_disable_outbound_ints(acb);
+       arcmsr_wait_firmware_ready(acb);
+       arcmsr_iop_confirm(acb);
        arcmsr_get_firmware_spec(acb);
        /*start background rebuild*/
        arcmsr_start_adapter_bgrb(acb);
        /* empty doorbell Qbuffer if door bell ringed */
        arcmsr_clear_doorbell_queue_buffer(acb);
+       arcmsr_enable_eoi_mode(acb);
        /* enable outbound Post Queue,outbound doorbell Interrupt */
        arcmsr_enable_outbound_ints(acb, intmask_org);
        acb->acb_flags |= ACB_F_IOP_INITED;
@@ -2275,6 +2309,7 @@ static pci_ers_result_t arcmsr_pci_slot_reset(struct pci_dev *pdev)
        arcmsr_start_adapter_bgrb(acb);
        /* empty doorbell Qbuffer if door bell ringed */
        arcmsr_clear_doorbell_queue_buffer(acb);
+       arcmsr_enable_eoi_mode(acb);
        /* enable outbound Post Queue,outbound doorbell Interrupt */
        arcmsr_enable_outbound_ints(acb, intmask_org);
        acb->acb_flags |= ACB_F_IOP_INITED;