[SCSI] qla4xxx: Updated the Copyright header
[linux-2.6.git] / drivers / scsi / qla4xxx / ql4_mbx.c
1 /*
2  * QLogic iSCSI HBA Driver
3  * Copyright (c)  2003-2010 QLogic Corporation
4  *
5  * See LICENSE.qla4xxx for copyright and licensing details.
6  */
7
8 #include "ql4_def.h"
9 #include "ql4_glbl.h"
10 #include "ql4_dbg.h"
11 #include "ql4_inline.h"
12
13
14 /**
15  * qla4xxx_mailbox_command - issues mailbox commands
16  * @ha: Pointer to host adapter structure.
17  * @inCount: number of mailbox registers to load.
18  * @outCount: number of mailbox registers to return.
19  * @mbx_cmd: data pointer for mailbox in registers.
20  * @mbx_sts: data pointer for mailbox out registers.
21  *
22  * This routine isssue mailbox commands and waits for completion.
23  * If outCount is 0, this routine completes successfully WITHOUT waiting
24  * for the mailbox command to complete.
25  **/
26 int qla4xxx_mailbox_command(struct scsi_qla_host *ha, uint8_t inCount,
27                             uint8_t outCount, uint32_t *mbx_cmd,
28                             uint32_t *mbx_sts)
29 {
30         int status = QLA_ERROR;
31         uint8_t i;
32         u_long wait_count;
33         uint32_t intr_status;
34         unsigned long flags = 0;
35
36         /* Make sure that pointers are valid */
37         if (!mbx_cmd || !mbx_sts) {
38                 DEBUG2(printk("scsi%ld: %s: Invalid mbx_cmd or mbx_sts "
39                               "pointer\n", ha->host_no, __func__));
40                 return status;
41         }
42
43         if (is_qla8022(ha) &&
44             test_bit(AF_FW_RECOVERY, &ha->flags)) {
45                 DEBUG2(ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: prematurely "
46                     "completing mbx cmd as firmware recovery detected\n",
47                     ha->host_no, __func__));
48                 return status;
49         }
50
51         if ((is_aer_supported(ha)) &&
52             (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))) {
53                 DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Perm failure on EEH, "
54                     "timeout MBX Exiting.\n", ha->host_no, __func__));
55                 return status;
56         }
57
58         /* Mailbox code active */
59         wait_count = MBOX_TOV * 100;
60
61         while (wait_count--) {
62                 mutex_lock(&ha->mbox_sem);
63                 if (!test_bit(AF_MBOX_COMMAND, &ha->flags)) {
64                         set_bit(AF_MBOX_COMMAND, &ha->flags);
65                         mutex_unlock(&ha->mbox_sem);
66                         break;
67                 }
68                 mutex_unlock(&ha->mbox_sem);
69                 if (!wait_count) {
70                         DEBUG2(printk("scsi%ld: %s: mbox_sem failed\n",
71                                 ha->host_no, __func__));
72                         return status;
73                 }
74                 msleep(10);
75         }
76
77         /* To prevent overwriting mailbox registers for a command that has
78          * not yet been serviced, check to see if an active command
79          * (AEN, IOCB, etc.) is interrupting, then service it.
80          * -----------------------------------------------------------------
81          */
82         spin_lock_irqsave(&ha->hardware_lock, flags);
83
84         if (!is_qla8022(ha)) {
85                 intr_status = readl(&ha->reg->ctrl_status);
86                 if (intr_status & CSR_SCSI_PROCESSOR_INTR) {
87                         /* Service existing interrupt */
88                         ha->isp_ops->interrupt_service_routine(ha, intr_status);
89                         clear_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
90                 }
91         }
92
93         ha->mbox_status_count = outCount;
94         for (i = 0; i < outCount; i++)
95                 ha->mbox_status[i] = 0;
96
97         if (is_qla8022(ha)) {
98                 /* Load all mailbox registers, except mailbox 0. */
99                 DEBUG5(
100                     printk("scsi%ld: %s: Cmd ", ha->host_no, __func__);
101                     for (i = 0; i < inCount; i++)
102                         printk("mb%d=%04x ", i, mbx_cmd[i]);
103                     printk("\n"));
104
105                 for (i = 1; i < inCount; i++)
106                         writel(mbx_cmd[i], &ha->qla4_8xxx_reg->mailbox_in[i]);
107                 writel(mbx_cmd[0], &ha->qla4_8xxx_reg->mailbox_in[0]);
108                 readl(&ha->qla4_8xxx_reg->mailbox_in[0]);
109                 writel(HINT_MBX_INT_PENDING, &ha->qla4_8xxx_reg->hint);
110         } else {
111                 /* Load all mailbox registers, except mailbox 0. */
112                 for (i = 1; i < inCount; i++)
113                         writel(mbx_cmd[i], &ha->reg->mailbox[i]);
114
115                 /* Wakeup firmware  */
116                 writel(mbx_cmd[0], &ha->reg->mailbox[0]);
117                 readl(&ha->reg->mailbox[0]);
118                 writel(set_rmask(CSR_INTR_RISC), &ha->reg->ctrl_status);
119                 readl(&ha->reg->ctrl_status);
120         }
121
122         spin_unlock_irqrestore(&ha->hardware_lock, flags);
123
124         /* Wait for completion */
125
126         /*
127          * If we don't want status, don't wait for the mailbox command to
128          * complete.  For example, MBOX_CMD_RESET_FW doesn't return status,
129          * you must poll the inbound Interrupt Mask for completion.
130          */
131         if (outCount == 0) {
132                 status = QLA_SUCCESS;
133                 goto mbox_exit;
134         }
135
136         /*
137          * Wait for completion: Poll or completion queue
138          */
139         if (test_bit(AF_IRQ_ATTACHED, &ha->flags) &&
140             test_bit(AF_INTERRUPTS_ON, &ha->flags) &&
141             test_bit(AF_ONLINE, &ha->flags) &&
142             !test_bit(AF_HBA_GOING_AWAY, &ha->flags)) {
143                 /* Do not poll for completion. Use completion queue */
144                 set_bit(AF_MBOX_COMMAND_NOPOLL, &ha->flags);
145                 wait_for_completion_timeout(&ha->mbx_intr_comp, MBOX_TOV * HZ);
146                 clear_bit(AF_MBOX_COMMAND_NOPOLL, &ha->flags);
147         } else {
148                 /* Poll for command to complete */
149                 wait_count = jiffies + MBOX_TOV * HZ;
150                 while (test_bit(AF_MBOX_COMMAND_DONE, &ha->flags) == 0) {
151                         if (time_after_eq(jiffies, wait_count))
152                                 break;
153
154                         /*
155                          * Service the interrupt.
156                          * The ISR will save the mailbox status registers
157                          * to a temporary storage location in the adapter
158                          * structure.
159                          */
160
161                         spin_lock_irqsave(&ha->hardware_lock, flags);
162                         if (is_qla8022(ha)) {
163                                 intr_status =
164                                     readl(&ha->qla4_8xxx_reg->host_int);
165                                 if (intr_status & ISRX_82XX_RISC_INT) {
166                                         ha->mbox_status_count = outCount;
167                                         intr_status =
168                                          readl(&ha->qla4_8xxx_reg->host_status);
169                                         ha->isp_ops->interrupt_service_routine(
170                                             ha, intr_status);
171                                         if (test_bit(AF_INTERRUPTS_ON,
172                                             &ha->flags) &&
173                                             test_bit(AF_INTx_ENABLED,
174                                             &ha->flags))
175                                                 qla4_8xxx_wr_32(ha,
176                                                 ha->nx_legacy_intr.tgt_mask_reg,
177                                                 0xfbff);
178                                 }
179                         } else {
180                                 intr_status = readl(&ha->reg->ctrl_status);
181                                 if (intr_status & INTR_PENDING) {
182                                         /*
183                                          * Service the interrupt.
184                                          * The ISR will save the mailbox status
185                                          * registers to a temporary storage
186                                          * location in the adapter structure.
187                                          */
188                                         ha->mbox_status_count = outCount;
189                                         ha->isp_ops->interrupt_service_routine(
190                                             ha, intr_status);
191                                 }
192                         }
193                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
194                         msleep(10);
195                 }
196         }
197
198         /* Check for mailbox timeout. */
199         if (!test_bit(AF_MBOX_COMMAND_DONE, &ha->flags)) {
200                 if (is_qla8022(ha) &&
201                     test_bit(AF_FW_RECOVERY, &ha->flags)) {
202                         DEBUG2(ql4_printk(KERN_INFO, ha,
203                             "scsi%ld: %s: prematurely completing mbx cmd as "
204                             "firmware recovery detected\n",
205                             ha->host_no, __func__));
206                         goto mbox_exit;
207                 }
208                 DEBUG2(printk("scsi%ld: Mailbox Cmd 0x%08X timed out ...,"
209                               " Scheduling Adapter Reset\n", ha->host_no,
210                               mbx_cmd[0]));
211                 ha->mailbox_timeout_count++;
212                 mbx_sts[0] = (-1);
213                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
214                 goto mbox_exit;
215         }
216
217         /*
218          * Copy the mailbox out registers to the caller's mailbox in/out
219          * structure.
220          */
221         spin_lock_irqsave(&ha->hardware_lock, flags);
222         for (i = 0; i < outCount; i++)
223                 mbx_sts[i] = ha->mbox_status[i];
224
225         /* Set return status and error flags (if applicable). */
226         switch (ha->mbox_status[0]) {
227         case MBOX_STS_COMMAND_COMPLETE:
228                 status = QLA_SUCCESS;
229                 break;
230
231         case MBOX_STS_INTERMEDIATE_COMPLETION:
232                 status = QLA_SUCCESS;
233                 break;
234
235         case MBOX_STS_BUSY:
236                 DEBUG2( printk("scsi%ld: %s: Cmd = %08X, ISP BUSY\n",
237                                ha->host_no, __func__, mbx_cmd[0]));
238                 ha->mailbox_timeout_count++;
239                 break;
240
241         default:
242                 DEBUG2(printk("scsi%ld: %s: **** FAILED, cmd = %08X, "
243                               "sts = %08X ****\n", ha->host_no, __func__,
244                               mbx_cmd[0], mbx_sts[0]));
245                 break;
246         }
247         spin_unlock_irqrestore(&ha->hardware_lock, flags);
248
249 mbox_exit:
250         mutex_lock(&ha->mbox_sem);
251         clear_bit(AF_MBOX_COMMAND, &ha->flags);
252         mutex_unlock(&ha->mbox_sem);
253         clear_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
254
255         return status;
256 }
257
258 void qla4xxx_mailbox_premature_completion(struct scsi_qla_host *ha)
259 {
260         set_bit(AF_FW_RECOVERY, &ha->flags);
261         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: set FW RECOVERY!\n",
262             ha->host_no, __func__);
263
264         if (test_bit(AF_MBOX_COMMAND, &ha->flags)) {
265                 if (test_bit(AF_MBOX_COMMAND_NOPOLL, &ha->flags)) {
266                         complete(&ha->mbx_intr_comp);
267                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Due to fw "
268                             "recovery, doing premature completion of "
269                             "mbx cmd\n", ha->host_no, __func__);
270
271                 } else {
272                         set_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
273                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Due to fw "
274                             "recovery, doing premature completion of "
275                             "polling mbx cmd\n", ha->host_no, __func__);
276                 }
277         }
278 }
279
280 static uint8_t
281 qla4xxx_set_ifcb(struct scsi_qla_host *ha, uint32_t *mbox_cmd,
282                  uint32_t *mbox_sts, dma_addr_t init_fw_cb_dma)
283 {
284         memset(mbox_cmd, 0, sizeof(mbox_cmd[0]) * MBOX_REG_COUNT);
285         memset(mbox_sts, 0, sizeof(mbox_sts[0]) * MBOX_REG_COUNT);
286
287         if (is_qla8022(ha))
288                 qla4_8xxx_wr_32(ha, ha->nx_db_wr_ptr, 0);
289
290         mbox_cmd[0] = MBOX_CMD_INITIALIZE_FIRMWARE;
291         mbox_cmd[1] = 0;
292         mbox_cmd[2] = LSDW(init_fw_cb_dma);
293         mbox_cmd[3] = MSDW(init_fw_cb_dma);
294         mbox_cmd[4] = sizeof(struct addr_ctrl_blk);
295         mbox_cmd[5] = (IFCB_VER_MAX << 8) | IFCB_VER_MIN;
296
297         if (qla4xxx_mailbox_command(ha, 6, 6, mbox_cmd, mbox_sts) !=
298             QLA_SUCCESS) {
299                 DEBUG2(printk(KERN_WARNING "scsi%ld: %s: "
300                               "MBOX_CMD_INITIALIZE_FIRMWARE"
301                               " failed w/ status %04X\n",
302                               ha->host_no, __func__, mbox_sts[0]));
303                 return QLA_ERROR;
304         }
305         return QLA_SUCCESS;
306 }
307
308 static uint8_t
309 qla4xxx_get_ifcb(struct scsi_qla_host *ha, uint32_t *mbox_cmd,
310                  uint32_t *mbox_sts, dma_addr_t init_fw_cb_dma)
311 {
312         memset(mbox_cmd, 0, sizeof(mbox_cmd[0]) * MBOX_REG_COUNT);
313         memset(mbox_sts, 0, sizeof(mbox_sts[0]) * MBOX_REG_COUNT);
314         mbox_cmd[0] = MBOX_CMD_GET_INIT_FW_CTRL_BLOCK;
315         mbox_cmd[2] = LSDW(init_fw_cb_dma);
316         mbox_cmd[3] = MSDW(init_fw_cb_dma);
317         mbox_cmd[4] = sizeof(struct addr_ctrl_blk);
318
319         if (qla4xxx_mailbox_command(ha, 5, 5, mbox_cmd, mbox_sts) !=
320             QLA_SUCCESS) {
321                 DEBUG2(printk(KERN_WARNING "scsi%ld: %s: "
322                               "MBOX_CMD_GET_INIT_FW_CTRL_BLOCK"
323                               " failed w/ status %04X\n",
324                               ha->host_no, __func__, mbox_sts[0]));
325                 return QLA_ERROR;
326         }
327         return QLA_SUCCESS;
328 }
329
330 static void
331 qla4xxx_update_local_ip(struct scsi_qla_host *ha,
332                          struct addr_ctrl_blk  *init_fw_cb)
333 {
334         /* Save IPv4 Address Info */
335         memcpy(ha->ip_address, init_fw_cb->ipv4_addr,
336                 min(sizeof(ha->ip_address), sizeof(init_fw_cb->ipv4_addr)));
337         memcpy(ha->subnet_mask, init_fw_cb->ipv4_subnet,
338                 min(sizeof(ha->subnet_mask), sizeof(init_fw_cb->ipv4_subnet)));
339         memcpy(ha->gateway, init_fw_cb->ipv4_gw_addr,
340                 min(sizeof(ha->gateway), sizeof(init_fw_cb->ipv4_gw_addr)));
341
342         if (is_ipv6_enabled(ha)) {
343                 /* Save IPv6 Address */
344                 ha->ipv6_link_local_state = init_fw_cb->ipv6_lnk_lcl_addr_state;
345                 ha->ipv6_addr0_state = init_fw_cb->ipv6_addr0_state;
346                 ha->ipv6_addr1_state = init_fw_cb->ipv6_addr1_state;
347                 ha->ipv6_default_router_state = init_fw_cb->ipv6_dflt_rtr_state;
348                 ha->ipv6_link_local_addr.in6_u.u6_addr8[0] = 0xFE;
349                 ha->ipv6_link_local_addr.in6_u.u6_addr8[1] = 0x80;
350
351                 memcpy(&ha->ipv6_link_local_addr.in6_u.u6_addr8[8],
352                         init_fw_cb->ipv6_if_id,
353                         min(sizeof(ha->ipv6_link_local_addr)/2,
354                         sizeof(init_fw_cb->ipv6_if_id)));
355                 memcpy(&ha->ipv6_addr0, init_fw_cb->ipv6_addr0,
356                         min(sizeof(ha->ipv6_addr0),
357                         sizeof(init_fw_cb->ipv6_addr0)));
358                 memcpy(&ha->ipv6_addr1, init_fw_cb->ipv6_addr1,
359                         min(sizeof(ha->ipv6_addr1),
360                         sizeof(init_fw_cb->ipv6_addr1)));
361                 memcpy(&ha->ipv6_default_router_addr,
362                         init_fw_cb->ipv6_dflt_rtr_addr,
363                         min(sizeof(ha->ipv6_default_router_addr),
364                         sizeof(init_fw_cb->ipv6_dflt_rtr_addr)));
365         }
366 }
367
368 static uint8_t
369 qla4xxx_update_local_ifcb(struct scsi_qla_host *ha,
370                           uint32_t *mbox_cmd,
371                           uint32_t *mbox_sts,
372                           struct addr_ctrl_blk  *init_fw_cb,
373                           dma_addr_t init_fw_cb_dma)
374 {
375         if (qla4xxx_get_ifcb(ha, mbox_cmd, mbox_sts, init_fw_cb_dma)
376             != QLA_SUCCESS) {
377                 DEBUG2(printk(KERN_WARNING
378                               "scsi%ld: %s: Failed to get init_fw_ctrl_blk\n",
379                               ha->host_no, __func__));
380                 return QLA_ERROR;
381         }
382
383         DEBUG2(qla4xxx_dump_buffer(init_fw_cb, sizeof(struct addr_ctrl_blk)));
384
385         /* Save some info in adapter structure. */
386         ha->acb_version = init_fw_cb->acb_version;
387         ha->firmware_options = le16_to_cpu(init_fw_cb->fw_options);
388         ha->tcp_options = le16_to_cpu(init_fw_cb->ipv4_tcp_opts);
389         ha->ipv4_options = le16_to_cpu(init_fw_cb->ipv4_ip_opts);
390         ha->ipv4_addr_state = le16_to_cpu(init_fw_cb->ipv4_addr_state);
391         ha->heartbeat_interval = init_fw_cb->hb_interval;
392         memcpy(ha->name_string, init_fw_cb->iscsi_name,
393                 min(sizeof(ha->name_string),
394                 sizeof(init_fw_cb->iscsi_name)));
395         /*memcpy(ha->alias, init_fw_cb->Alias,
396                min(sizeof(ha->alias), sizeof(init_fw_cb->Alias)));*/
397
398         /* Save Command Line Paramater info */
399         ha->discovery_wait = ql4xdiscoverywait;
400
401         if (ha->acb_version == ACB_SUPPORTED) {
402                 ha->ipv6_options = init_fw_cb->ipv6_opts;
403                 ha->ipv6_addl_options = init_fw_cb->ipv6_addtl_opts;
404         }
405         qla4xxx_update_local_ip(ha, init_fw_cb);
406
407         return QLA_SUCCESS;
408 }
409
410 /**
411  * qla4xxx_initialize_fw_cb - initializes firmware control block.
412  * @ha: Pointer to host adapter structure.
413  **/
414 int qla4xxx_initialize_fw_cb(struct scsi_qla_host * ha)
415 {
416         struct addr_ctrl_blk *init_fw_cb;
417         dma_addr_t init_fw_cb_dma;
418         uint32_t mbox_cmd[MBOX_REG_COUNT];
419         uint32_t mbox_sts[MBOX_REG_COUNT];
420         int status = QLA_ERROR;
421
422         init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
423                                         sizeof(struct addr_ctrl_blk),
424                                         &init_fw_cb_dma, GFP_KERNEL);
425         if (init_fw_cb == NULL) {
426                 DEBUG2(printk("scsi%ld: %s: Unable to alloc init_cb\n",
427                               ha->host_no, __func__));
428                 goto exit_init_fw_cb_no_free;
429         }
430         memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
431
432         /* Get Initialize Firmware Control Block. */
433         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
434         memset(&mbox_sts, 0, sizeof(mbox_sts));
435
436         if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma) !=
437             QLA_SUCCESS) {
438                 dma_free_coherent(&ha->pdev->dev,
439                                   sizeof(struct addr_ctrl_blk),
440                                   init_fw_cb, init_fw_cb_dma);
441                 goto exit_init_fw_cb;
442         }
443
444         /* Initialize request and response queues. */
445         qla4xxx_init_rings(ha);
446
447         /* Fill in the request and response queue information. */
448         init_fw_cb->rqq_consumer_idx = cpu_to_le16(ha->request_out);
449         init_fw_cb->compq_producer_idx = cpu_to_le16(ha->response_in);
450         init_fw_cb->rqq_len = __constant_cpu_to_le16(REQUEST_QUEUE_DEPTH);
451         init_fw_cb->compq_len = __constant_cpu_to_le16(RESPONSE_QUEUE_DEPTH);
452         init_fw_cb->rqq_addr_lo = cpu_to_le32(LSDW(ha->request_dma));
453         init_fw_cb->rqq_addr_hi = cpu_to_le32(MSDW(ha->request_dma));
454         init_fw_cb->compq_addr_lo = cpu_to_le32(LSDW(ha->response_dma));
455         init_fw_cb->compq_addr_hi = cpu_to_le32(MSDW(ha->response_dma));
456         init_fw_cb->shdwreg_addr_lo = cpu_to_le32(LSDW(ha->shadow_regs_dma));
457         init_fw_cb->shdwreg_addr_hi = cpu_to_le32(MSDW(ha->shadow_regs_dma));
458
459         /* Set up required options. */
460         init_fw_cb->fw_options |=
461                 __constant_cpu_to_le16(FWOPT_SESSION_MODE |
462                                        FWOPT_INITIATOR_MODE);
463
464         if (is_qla8022(ha))
465                 init_fw_cb->fw_options |=
466                     __constant_cpu_to_le16(FWOPT_ENABLE_CRBDB);
467
468         init_fw_cb->fw_options &= __constant_cpu_to_le16(~FWOPT_TARGET_MODE);
469
470         if (qla4xxx_set_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)
471                 != QLA_SUCCESS) {
472                 DEBUG2(printk(KERN_WARNING
473                               "scsi%ld: %s: Failed to set init_fw_ctrl_blk\n",
474                               ha->host_no, __func__));
475                 goto exit_init_fw_cb;
476         }
477
478         if (qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0],
479                 init_fw_cb, init_fw_cb_dma) != QLA_SUCCESS) {
480                 DEBUG2(printk("scsi%ld: %s: Failed to update local ifcb\n",
481                                 ha->host_no, __func__));
482                 goto exit_init_fw_cb;
483         }
484         status = QLA_SUCCESS;
485
486 exit_init_fw_cb:
487         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
488                                 init_fw_cb, init_fw_cb_dma);
489 exit_init_fw_cb_no_free:
490         return status;
491 }
492
493 /**
494  * qla4xxx_get_dhcp_ip_address - gets HBA ip address via DHCP
495  * @ha: Pointer to host adapter structure.
496  **/
497 int qla4xxx_get_dhcp_ip_address(struct scsi_qla_host * ha)
498 {
499         struct addr_ctrl_blk *init_fw_cb;
500         dma_addr_t init_fw_cb_dma;
501         uint32_t mbox_cmd[MBOX_REG_COUNT];
502         uint32_t mbox_sts[MBOX_REG_COUNT];
503
504         init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
505                                         sizeof(struct addr_ctrl_blk),
506                                         &init_fw_cb_dma, GFP_KERNEL);
507         if (init_fw_cb == NULL) {
508                 printk("scsi%ld: %s: Unable to alloc init_cb\n", ha->host_no,
509                        __func__);
510                 return QLA_ERROR;
511         }
512
513         /* Get Initialize Firmware Control Block. */
514         memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
515         if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma) !=
516             QLA_SUCCESS) {
517                 DEBUG2(printk("scsi%ld: %s: Failed to get init_fw_ctrl_blk\n",
518                               ha->host_no, __func__));
519                 dma_free_coherent(&ha->pdev->dev,
520                                   sizeof(struct addr_ctrl_blk),
521                                   init_fw_cb, init_fw_cb_dma);
522                 return QLA_ERROR;
523         }
524
525         /* Save IP Address. */
526         qla4xxx_update_local_ip(ha, init_fw_cb);
527         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
528                                 init_fw_cb, init_fw_cb_dma);
529
530         return QLA_SUCCESS;
531 }
532
533 /**
534  * qla4xxx_get_firmware_state - gets firmware state of HBA
535  * @ha: Pointer to host adapter structure.
536  **/
537 int qla4xxx_get_firmware_state(struct scsi_qla_host * ha)
538 {
539         uint32_t mbox_cmd[MBOX_REG_COUNT];
540         uint32_t mbox_sts[MBOX_REG_COUNT];
541
542         /* Get firmware version */
543         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
544         memset(&mbox_sts, 0, sizeof(mbox_sts));
545
546         mbox_cmd[0] = MBOX_CMD_GET_FW_STATE;
547
548         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 4, &mbox_cmd[0], &mbox_sts[0]) !=
549             QLA_SUCCESS) {
550                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_FW_STATE failed w/ "
551                               "status %04X\n", ha->host_no, __func__,
552                               mbox_sts[0]));
553                 return QLA_ERROR;
554         }
555         ha->firmware_state = mbox_sts[1];
556         ha->board_id = mbox_sts[2];
557         ha->addl_fw_state = mbox_sts[3];
558         DEBUG2(printk("scsi%ld: %s firmware_state=0x%x\n",
559                       ha->host_no, __func__, ha->firmware_state);)
560
561         return QLA_SUCCESS;
562 }
563
564 /**
565  * qla4xxx_get_firmware_status - retrieves firmware status
566  * @ha: Pointer to host adapter structure.
567  **/
568 int qla4xxx_get_firmware_status(struct scsi_qla_host * ha)
569 {
570         uint32_t mbox_cmd[MBOX_REG_COUNT];
571         uint32_t mbox_sts[MBOX_REG_COUNT];
572
573         /* Get firmware version */
574         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
575         memset(&mbox_sts, 0, sizeof(mbox_sts));
576
577         mbox_cmd[0] = MBOX_CMD_GET_FW_STATUS;
578
579         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 3, &mbox_cmd[0], &mbox_sts[0]) !=
580             QLA_SUCCESS) {
581                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_FW_STATUS failed w/ "
582                               "status %04X\n", ha->host_no, __func__,
583                               mbox_sts[0]));
584                 return QLA_ERROR;
585         }
586
587         ql4_printk(KERN_INFO, ha, "%ld firmare IOCBs available (%d).\n",
588             ha->host_no, mbox_sts[2]);
589
590         return QLA_SUCCESS;
591 }
592
593 /**
594  * qla4xxx_get_fwddb_entry - retrieves firmware ddb entry
595  * @ha: Pointer to host adapter structure.
596  * @fw_ddb_index: Firmware's device database index
597  * @fw_ddb_entry: Pointer to firmware's device database entry structure
598  * @num_valid_ddb_entries: Pointer to number of valid ddb entries
599  * @next_ddb_index: Pointer to next valid device database index
600  * @fw_ddb_device_state: Pointer to device state
601  **/
602 int qla4xxx_get_fwddb_entry(struct scsi_qla_host *ha,
603                             uint16_t fw_ddb_index,
604                             struct dev_db_entry *fw_ddb_entry,
605                             dma_addr_t fw_ddb_entry_dma,
606                             uint32_t *num_valid_ddb_entries,
607                             uint32_t *next_ddb_index,
608                             uint32_t *fw_ddb_device_state,
609                             uint32_t *conn_err_detail,
610                             uint16_t *tcp_source_port_num,
611                             uint16_t *connection_id)
612 {
613         int status = QLA_ERROR;
614         uint16_t options;
615         uint32_t mbox_cmd[MBOX_REG_COUNT];
616         uint32_t mbox_sts[MBOX_REG_COUNT];
617
618         /* Make sure the device index is valid */
619         if (fw_ddb_index >= MAX_DDB_ENTRIES) {
620                 DEBUG2(printk("scsi%ld: %s: ddb [%d] out of range.\n",
621                               ha->host_no, __func__, fw_ddb_index));
622                 goto exit_get_fwddb;
623         }
624         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
625         memset(&mbox_sts, 0, sizeof(mbox_sts));
626
627         mbox_cmd[0] = MBOX_CMD_GET_DATABASE_ENTRY;
628         mbox_cmd[1] = (uint32_t) fw_ddb_index;
629         mbox_cmd[2] = LSDW(fw_ddb_entry_dma);
630         mbox_cmd[3] = MSDW(fw_ddb_entry_dma);
631         mbox_cmd[4] = sizeof(struct dev_db_entry);
632
633         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 7, &mbox_cmd[0], &mbox_sts[0]) ==
634             QLA_ERROR) {
635                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_DATABASE_ENTRY failed"
636                               " with status 0x%04X\n", ha->host_no, __func__,
637                               mbox_sts[0]));
638                 goto exit_get_fwddb;
639         }
640         if (fw_ddb_index != mbox_sts[1]) {
641                 DEBUG2(printk("scsi%ld: %s: ddb mismatch [%d] != [%d].\n",
642                               ha->host_no, __func__, fw_ddb_index,
643                               mbox_sts[1]));
644                 goto exit_get_fwddb;
645         }
646         if (fw_ddb_entry) {
647                 options = le16_to_cpu(fw_ddb_entry->options);
648                 if (options & DDB_OPT_IPV6_DEVICE) {
649                         ql4_printk(KERN_INFO, ha, "%s: DDB[%d] MB0 %04x Tot %d "
650                                 "Next %d State %04x ConnErr %08x %pI6 "
651                                 ":%04d \"%s\"\n", __func__, fw_ddb_index,
652                                 mbox_sts[0], mbox_sts[2], mbox_sts[3],
653                                 mbox_sts[4], mbox_sts[5],
654                                 fw_ddb_entry->ip_addr,
655                                 le16_to_cpu(fw_ddb_entry->port),
656                                 fw_ddb_entry->iscsi_name);
657                 } else {
658                         ql4_printk(KERN_INFO, ha, "%s: DDB[%d] MB0 %04x Tot %d "
659                                 "Next %d State %04x ConnErr %08x %pI4 "
660                                 ":%04d \"%s\"\n", __func__, fw_ddb_index,
661                                 mbox_sts[0], mbox_sts[2], mbox_sts[3],
662                                 mbox_sts[4], mbox_sts[5],
663                                 fw_ddb_entry->ip_addr,
664                                 le16_to_cpu(fw_ddb_entry->port),
665                                 fw_ddb_entry->iscsi_name);
666                 }
667         }
668         if (num_valid_ddb_entries)
669                 *num_valid_ddb_entries = mbox_sts[2];
670         if (next_ddb_index)
671                 *next_ddb_index = mbox_sts[3];
672         if (fw_ddb_device_state)
673                 *fw_ddb_device_state = mbox_sts[4];
674
675         /*
676          * RA: This mailbox has been changed to pass connection error and
677          * details.  Its true for ISP4010 as per Version E - Not sure when it
678          * was changed.  Get the time2wait from the fw_dd_entry field :
679          * default_time2wait which we call it as minTime2Wait DEV_DB_ENTRY
680          * struct.
681          */
682         if (conn_err_detail)
683                 *conn_err_detail = mbox_sts[5];
684         if (tcp_source_port_num)
685                 *tcp_source_port_num = (uint16_t) (mbox_sts[6] >> 16);
686         if (connection_id)
687                 *connection_id = (uint16_t) mbox_sts[6] & 0x00FF;
688         status = QLA_SUCCESS;
689
690 exit_get_fwddb:
691         return status;
692 }
693
694 /**
695  * qla4xxx_set_fwddb_entry - sets a ddb entry.
696  * @ha: Pointer to host adapter structure.
697  * @fw_ddb_index: Firmware's device database index
698  * @fw_ddb_entry: Pointer to firmware's ddb entry structure, or NULL.
699  *
700  * This routine initializes or updates the adapter's device database
701  * entry for the specified device. It also triggers a login for the
702  * specified device. Therefore, it may also be used as a secondary
703  * login routine when a NULL pointer is specified for the fw_ddb_entry.
704  **/
705 int qla4xxx_set_ddb_entry(struct scsi_qla_host * ha, uint16_t fw_ddb_index,
706                           dma_addr_t fw_ddb_entry_dma)
707 {
708         uint32_t mbox_cmd[MBOX_REG_COUNT];
709         uint32_t mbox_sts[MBOX_REG_COUNT];
710         int status;
711
712         /* Do not wait for completion. The firmware will send us an
713          * ASTS_DATABASE_CHANGED (0x8014) to notify us of the login status.
714          */
715         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
716         memset(&mbox_sts, 0, sizeof(mbox_sts));
717
718         mbox_cmd[0] = MBOX_CMD_SET_DATABASE_ENTRY;
719         mbox_cmd[1] = (uint32_t) fw_ddb_index;
720         mbox_cmd[2] = LSDW(fw_ddb_entry_dma);
721         mbox_cmd[3] = MSDW(fw_ddb_entry_dma);
722         mbox_cmd[4] = sizeof(struct dev_db_entry);
723
724         status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0],
725             &mbox_sts[0]);
726         DEBUG2(printk("scsi%ld: %s: status=%d mbx0=0x%x mbx4=0x%x\n",
727             ha->host_no, __func__, status, mbox_sts[0], mbox_sts[4]);)
728
729         return status;
730 }
731
732 /**
733  * qla4xxx_get_crash_record - retrieves crash record.
734  * @ha: Pointer to host adapter structure.
735  *
736  * This routine retrieves a crash record from the QLA4010 after an 8002h aen.
737  **/
738 void qla4xxx_get_crash_record(struct scsi_qla_host * ha)
739 {
740         uint32_t mbox_cmd[MBOX_REG_COUNT];
741         uint32_t mbox_sts[MBOX_REG_COUNT];
742         struct crash_record *crash_record = NULL;
743         dma_addr_t crash_record_dma = 0;
744         uint32_t crash_record_size = 0;
745
746         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
747         memset(&mbox_sts, 0, sizeof(mbox_cmd));
748
749         /* Get size of crash record. */
750         mbox_cmd[0] = MBOX_CMD_GET_CRASH_RECORD;
751
752         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
753             QLA_SUCCESS) {
754                 DEBUG2(printk("scsi%ld: %s: ERROR: Unable to retrieve size!\n",
755                               ha->host_no, __func__));
756                 goto exit_get_crash_record;
757         }
758         crash_record_size = mbox_sts[4];
759         if (crash_record_size == 0) {
760                 DEBUG2(printk("scsi%ld: %s: ERROR: Crash record size is 0!\n",
761                               ha->host_no, __func__));
762                 goto exit_get_crash_record;
763         }
764
765         /* Alloc Memory for Crash Record. */
766         crash_record = dma_alloc_coherent(&ha->pdev->dev, crash_record_size,
767                                           &crash_record_dma, GFP_KERNEL);
768         if (crash_record == NULL)
769                 goto exit_get_crash_record;
770
771         /* Get Crash Record. */
772         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
773         memset(&mbox_sts, 0, sizeof(mbox_cmd));
774
775         mbox_cmd[0] = MBOX_CMD_GET_CRASH_RECORD;
776         mbox_cmd[2] = LSDW(crash_record_dma);
777         mbox_cmd[3] = MSDW(crash_record_dma);
778         mbox_cmd[4] = crash_record_size;
779
780         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
781             QLA_SUCCESS)
782                 goto exit_get_crash_record;
783
784         /* Dump Crash Record. */
785
786 exit_get_crash_record:
787         if (crash_record)
788                 dma_free_coherent(&ha->pdev->dev, crash_record_size,
789                                   crash_record, crash_record_dma);
790 }
791
792 /**
793  * qla4xxx_get_conn_event_log - retrieves connection event log
794  * @ha: Pointer to host adapter structure.
795  **/
796 void qla4xxx_get_conn_event_log(struct scsi_qla_host * ha)
797 {
798         uint32_t mbox_cmd[MBOX_REG_COUNT];
799         uint32_t mbox_sts[MBOX_REG_COUNT];
800         struct conn_event_log_entry *event_log = NULL;
801         dma_addr_t event_log_dma = 0;
802         uint32_t event_log_size = 0;
803         uint32_t num_valid_entries;
804         uint32_t      oldest_entry = 0;
805         uint32_t        max_event_log_entries;
806         uint8_t         i;
807
808
809         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
810         memset(&mbox_sts, 0, sizeof(mbox_cmd));
811
812         /* Get size of crash record. */
813         mbox_cmd[0] = MBOX_CMD_GET_CONN_EVENT_LOG;
814
815         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
816             QLA_SUCCESS)
817                 goto exit_get_event_log;
818
819         event_log_size = mbox_sts[4];
820         if (event_log_size == 0)
821                 goto exit_get_event_log;
822
823         /* Alloc Memory for Crash Record. */
824         event_log = dma_alloc_coherent(&ha->pdev->dev, event_log_size,
825                                        &event_log_dma, GFP_KERNEL);
826         if (event_log == NULL)
827                 goto exit_get_event_log;
828
829         /* Get Crash Record. */
830         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
831         memset(&mbox_sts, 0, sizeof(mbox_cmd));
832
833         mbox_cmd[0] = MBOX_CMD_GET_CONN_EVENT_LOG;
834         mbox_cmd[2] = LSDW(event_log_dma);
835         mbox_cmd[3] = MSDW(event_log_dma);
836
837         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
838             QLA_SUCCESS) {
839                 DEBUG2(printk("scsi%ld: %s: ERROR: Unable to retrieve event "
840                               "log!\n", ha->host_no, __func__));
841                 goto exit_get_event_log;
842         }
843
844         /* Dump Event Log. */
845         num_valid_entries = mbox_sts[1];
846
847         max_event_log_entries = event_log_size /
848                 sizeof(struct conn_event_log_entry);
849
850         if (num_valid_entries > max_event_log_entries)
851                 oldest_entry = num_valid_entries % max_event_log_entries;
852
853         DEBUG3(printk("scsi%ld: Connection Event Log Dump (%d entries):\n",
854                       ha->host_no, num_valid_entries));
855
856         if (ql4xextended_error_logging == 3) {
857                 if (oldest_entry == 0) {
858                         /* Circular Buffer has not wrapped around */
859                         for (i=0; i < num_valid_entries; i++) {
860                                 qla4xxx_dump_buffer((uint8_t *)event_log+
861                                                     (i*sizeof(*event_log)),
862                                                     sizeof(*event_log));
863                         }
864                 }
865                 else {
866                         /* Circular Buffer has wrapped around -
867                          * display accordingly*/
868                         for (i=oldest_entry; i < max_event_log_entries; i++) {
869                                 qla4xxx_dump_buffer((uint8_t *)event_log+
870                                                     (i*sizeof(*event_log)),
871                                                     sizeof(*event_log));
872                         }
873                         for (i=0; i < oldest_entry; i++) {
874                                 qla4xxx_dump_buffer((uint8_t *)event_log+
875                                                     (i*sizeof(*event_log)),
876                                                     sizeof(*event_log));
877                         }
878                 }
879         }
880
881 exit_get_event_log:
882         if (event_log)
883                 dma_free_coherent(&ha->pdev->dev, event_log_size, event_log,
884                                   event_log_dma);
885 }
886
887 /**
888  * qla4xxx_abort_task - issues Abort Task
889  * @ha: Pointer to host adapter structure.
890  * @srb: Pointer to srb entry
891  *
892  * This routine performs a LUN RESET on the specified target/lun.
893  * The caller must ensure that the ddb_entry and lun_entry pointers
894  * are valid before calling this routine.
895  **/
896 int qla4xxx_abort_task(struct scsi_qla_host *ha, struct srb *srb)
897 {
898         uint32_t mbox_cmd[MBOX_REG_COUNT];
899         uint32_t mbox_sts[MBOX_REG_COUNT];
900         struct scsi_cmnd *cmd = srb->cmd;
901         int status = QLA_SUCCESS;
902         unsigned long flags = 0;
903         uint32_t index;
904
905         /*
906          * Send abort task command to ISP, so that the ISP will return
907          * request with ABORT status
908          */
909         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
910         memset(&mbox_sts, 0, sizeof(mbox_sts));
911
912         spin_lock_irqsave(&ha->hardware_lock, flags);
913         index = (unsigned long)(unsigned char *)cmd->host_scribble;
914         spin_unlock_irqrestore(&ha->hardware_lock, flags);
915
916         /* Firmware already posted completion on response queue */
917         if (index == MAX_SRBS)
918                 return status;
919
920         mbox_cmd[0] = MBOX_CMD_ABORT_TASK;
921         mbox_cmd[1] = srb->ddb->fw_ddb_index;
922         mbox_cmd[2] = index;
923         /* Immediate Command Enable */
924         mbox_cmd[5] = 0x01;
925
926         qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0],
927             &mbox_sts[0]);
928         if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE) {
929                 status = QLA_ERROR;
930
931                 DEBUG2(printk(KERN_WARNING "scsi%ld:%d:%d: abort task FAILED: "
932                     "mbx0=%04X, mb1=%04X, mb2=%04X, mb3=%04X, mb4=%04X\n",
933                     ha->host_no, cmd->device->id, cmd->device->lun, mbox_sts[0],
934                     mbox_sts[1], mbox_sts[2], mbox_sts[3], mbox_sts[4]));
935         }
936
937         return status;
938 }
939
940 /**
941  * qla4xxx_reset_lun - issues LUN Reset
942  * @ha: Pointer to host adapter structure.
943  * @ddb_entry: Pointer to device database entry
944  * @lun: lun number
945  *
946  * This routine performs a LUN RESET on the specified target/lun.
947  * The caller must ensure that the ddb_entry and lun_entry pointers
948  * are valid before calling this routine.
949  **/
950 int qla4xxx_reset_lun(struct scsi_qla_host * ha, struct ddb_entry * ddb_entry,
951                       int lun)
952 {
953         uint32_t mbox_cmd[MBOX_REG_COUNT];
954         uint32_t mbox_sts[MBOX_REG_COUNT];
955         int status = QLA_SUCCESS;
956
957         DEBUG2(printk("scsi%ld:%d:%d: lun reset issued\n", ha->host_no,
958                       ddb_entry->fw_ddb_index, lun));
959
960         /*
961          * Send lun reset command to ISP, so that the ISP will return all
962          * outstanding requests with RESET status
963          */
964         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
965         memset(&mbox_sts, 0, sizeof(mbox_sts));
966
967         mbox_cmd[0] = MBOX_CMD_LUN_RESET;
968         mbox_cmd[1] = ddb_entry->fw_ddb_index;
969         mbox_cmd[2] = lun << 8;
970         mbox_cmd[5] = 0x01;     /* Immediate Command Enable */
971
972         qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0], &mbox_sts[0]);
973         if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE &&
974             mbox_sts[0] != MBOX_STS_COMMAND_ERROR)
975                 status = QLA_ERROR;
976
977         return status;
978 }
979
980 /**
981  * qla4xxx_reset_target - issues target Reset
982  * @ha: Pointer to host adapter structure.
983  * @db_entry: Pointer to device database entry
984  * @un_entry: Pointer to lun entry structure
985  *
986  * This routine performs a TARGET RESET on the specified target.
987  * The caller must ensure that the ddb_entry pointers
988  * are valid before calling this routine.
989  **/
990 int qla4xxx_reset_target(struct scsi_qla_host *ha,
991                          struct ddb_entry *ddb_entry)
992 {
993         uint32_t mbox_cmd[MBOX_REG_COUNT];
994         uint32_t mbox_sts[MBOX_REG_COUNT];
995         int status = QLA_SUCCESS;
996
997         DEBUG2(printk("scsi%ld:%d: target reset issued\n", ha->host_no,
998                       ddb_entry->fw_ddb_index));
999
1000         /*
1001          * Send target reset command to ISP, so that the ISP will return all
1002          * outstanding requests with RESET status
1003          */
1004         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1005         memset(&mbox_sts, 0, sizeof(mbox_sts));
1006
1007         mbox_cmd[0] = MBOX_CMD_TARGET_WARM_RESET;
1008         mbox_cmd[1] = ddb_entry->fw_ddb_index;
1009         mbox_cmd[5] = 0x01;     /* Immediate Command Enable */
1010
1011         qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0],
1012                                 &mbox_sts[0]);
1013         if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE &&
1014             mbox_sts[0] != MBOX_STS_COMMAND_ERROR)
1015                 status = QLA_ERROR;
1016
1017         return status;
1018 }
1019
1020 int qla4xxx_get_flash(struct scsi_qla_host * ha, dma_addr_t dma_addr,
1021                       uint32_t offset, uint32_t len)
1022 {
1023         uint32_t mbox_cmd[MBOX_REG_COUNT];
1024         uint32_t mbox_sts[MBOX_REG_COUNT];
1025
1026         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1027         memset(&mbox_sts, 0, sizeof(mbox_sts));
1028
1029         mbox_cmd[0] = MBOX_CMD_READ_FLASH;
1030         mbox_cmd[1] = LSDW(dma_addr);
1031         mbox_cmd[2] = MSDW(dma_addr);
1032         mbox_cmd[3] = offset;
1033         mbox_cmd[4] = len;
1034
1035         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 2, &mbox_cmd[0], &mbox_sts[0]) !=
1036             QLA_SUCCESS) {
1037                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_READ_FLASH, failed w/ "
1038                     "status %04X %04X, offset %08x, len %08x\n", ha->host_no,
1039                     __func__, mbox_sts[0], mbox_sts[1], offset, len));
1040                 return QLA_ERROR;
1041         }
1042         return QLA_SUCCESS;
1043 }
1044
1045 /**
1046  * qla4xxx_get_fw_version - gets firmware version
1047  * @ha: Pointer to host adapter structure.
1048  *
1049  * Retrieves the firmware version on HBA. In QLA4010, mailboxes 2 & 3 may
1050  * hold an address for data.  Make sure that we write 0 to those mailboxes,
1051  * if unused.
1052  **/
1053 int qla4xxx_get_fw_version(struct scsi_qla_host * ha)
1054 {
1055         uint32_t mbox_cmd[MBOX_REG_COUNT];
1056         uint32_t mbox_sts[MBOX_REG_COUNT];
1057
1058         /* Get firmware version. */
1059         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1060         memset(&mbox_sts, 0, sizeof(mbox_sts));
1061
1062         mbox_cmd[0] = MBOX_CMD_ABOUT_FW;
1063
1064         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
1065             QLA_SUCCESS) {
1066                 DEBUG2(printk("scsi%ld: %s: MBOX_CMD_ABOUT_FW failed w/ "
1067                     "status %04X\n", ha->host_no, __func__, mbox_sts[0]));
1068                 return QLA_ERROR;
1069         }
1070
1071         /* Save firmware version information. */
1072         ha->firmware_version[0] = mbox_sts[1];
1073         ha->firmware_version[1] = mbox_sts[2];
1074         ha->patch_number = mbox_sts[3];
1075         ha->build_number = mbox_sts[4];
1076
1077         return QLA_SUCCESS;
1078 }
1079
1080 static int qla4xxx_get_default_ddb(struct scsi_qla_host *ha,
1081                                    dma_addr_t dma_addr)
1082 {
1083         uint32_t mbox_cmd[MBOX_REG_COUNT];
1084         uint32_t mbox_sts[MBOX_REG_COUNT];
1085
1086         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1087         memset(&mbox_sts, 0, sizeof(mbox_sts));
1088
1089         mbox_cmd[0] = MBOX_CMD_GET_DATABASE_ENTRY_DEFAULTS;
1090         mbox_cmd[2] = LSDW(dma_addr);
1091         mbox_cmd[3] = MSDW(dma_addr);
1092
1093         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0], &mbox_sts[0]) !=
1094             QLA_SUCCESS) {
1095                 DEBUG2(printk("scsi%ld: %s: failed status %04X\n",
1096                      ha->host_no, __func__, mbox_sts[0]));
1097                 return QLA_ERROR;
1098         }
1099         return QLA_SUCCESS;
1100 }
1101
1102 static int qla4xxx_req_ddb_entry(struct scsi_qla_host *ha, uint32_t *ddb_index)
1103 {
1104         uint32_t mbox_cmd[MBOX_REG_COUNT];
1105         uint32_t mbox_sts[MBOX_REG_COUNT];
1106
1107         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1108         memset(&mbox_sts, 0, sizeof(mbox_sts));
1109
1110         mbox_cmd[0] = MBOX_CMD_REQUEST_DATABASE_ENTRY;
1111         mbox_cmd[1] = MAX_PRST_DEV_DB_ENTRIES;
1112
1113         if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 3, &mbox_cmd[0], &mbox_sts[0]) !=
1114             QLA_SUCCESS) {
1115                 if (mbox_sts[0] == MBOX_STS_COMMAND_ERROR) {
1116                         *ddb_index = mbox_sts[2];
1117                 } else {
1118                         DEBUG2(printk("scsi%ld: %s: failed status %04X\n",
1119                              ha->host_no, __func__, mbox_sts[0]));
1120                         return QLA_ERROR;
1121                 }
1122         } else {
1123                 *ddb_index = MAX_PRST_DEV_DB_ENTRIES;
1124         }
1125
1126         return QLA_SUCCESS;
1127 }
1128
1129
1130 int qla4xxx_send_tgts(struct scsi_qla_host *ha, char *ip, uint16_t port)
1131 {
1132         struct dev_db_entry *fw_ddb_entry;
1133         dma_addr_t fw_ddb_entry_dma;
1134         uint32_t ddb_index;
1135         int ret_val = QLA_SUCCESS;
1136
1137
1138         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
1139                                           sizeof(*fw_ddb_entry),
1140                                           &fw_ddb_entry_dma, GFP_KERNEL);
1141         if (!fw_ddb_entry) {
1142                 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
1143                               ha->host_no, __func__));
1144                 ret_val = QLA_ERROR;
1145                 goto exit_send_tgts_no_free;
1146         }
1147
1148         ret_val = qla4xxx_get_default_ddb(ha, fw_ddb_entry_dma);
1149         if (ret_val != QLA_SUCCESS)
1150                 goto exit_send_tgts;
1151
1152         ret_val = qla4xxx_req_ddb_entry(ha, &ddb_index);
1153         if (ret_val != QLA_SUCCESS)
1154                 goto exit_send_tgts;
1155
1156         memset(fw_ddb_entry->iscsi_alias, 0,
1157                sizeof(fw_ddb_entry->iscsi_alias));
1158
1159         memset(fw_ddb_entry->iscsi_name, 0,
1160                sizeof(fw_ddb_entry->iscsi_name));
1161
1162         memset(fw_ddb_entry->ip_addr, 0, sizeof(fw_ddb_entry->ip_addr));
1163         memset(fw_ddb_entry->tgt_addr, 0,
1164                sizeof(fw_ddb_entry->tgt_addr));
1165
1166         fw_ddb_entry->options = (DDB_OPT_DISC_SESSION | DDB_OPT_TARGET);
1167         fw_ddb_entry->port = cpu_to_le16(ntohs(port));
1168
1169         fw_ddb_entry->ip_addr[0] = *ip;
1170         fw_ddb_entry->ip_addr[1] = *(ip + 1);
1171         fw_ddb_entry->ip_addr[2] = *(ip + 2);
1172         fw_ddb_entry->ip_addr[3] = *(ip + 3);
1173
1174         ret_val = qla4xxx_set_ddb_entry(ha, ddb_index, fw_ddb_entry_dma);
1175
1176 exit_send_tgts:
1177         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1178                           fw_ddb_entry, fw_ddb_entry_dma);
1179 exit_send_tgts_no_free:
1180         return ret_val;
1181 }
1182