xref: /openbmc/linux/drivers/scsi/qla4xxx/ql4_mbx.c (revision 3b64b188)
1 /*
2  * QLogic iSCSI HBA Driver
3  * Copyright (c)  2003-2012 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 #include "ql4_version.h"
13 
14 void qla4xxx_queue_mbox_cmd(struct scsi_qla_host *ha, uint32_t *mbx_cmd,
15 			    int in_count)
16 {
17 	int i;
18 
19 	/* Load all mailbox registers, except mailbox 0. */
20 	for (i = 1; i < in_count; i++)
21 		writel(mbx_cmd[i], &ha->reg->mailbox[i]);
22 
23 	/* Wakeup firmware  */
24 	writel(mbx_cmd[0], &ha->reg->mailbox[0]);
25 	readl(&ha->reg->mailbox[0]);
26 	writel(set_rmask(CSR_INTR_RISC), &ha->reg->ctrl_status);
27 	readl(&ha->reg->ctrl_status);
28 }
29 
30 void qla4xxx_process_mbox_intr(struct scsi_qla_host *ha, int out_count)
31 {
32 	int intr_status;
33 
34 	intr_status = readl(&ha->reg->ctrl_status);
35 	if (intr_status & INTR_PENDING) {
36 		/*
37 		 * Service the interrupt.
38 		 * The ISR will save the mailbox status registers
39 		 * to a temporary storage location in the adapter structure.
40 		 */
41 		ha->mbox_status_count = out_count;
42 		ha->isp_ops->interrupt_service_routine(ha, intr_status);
43 	}
44 }
45 
46 /**
47  * qla4xxx_mailbox_command - issues mailbox commands
48  * @ha: Pointer to host adapter structure.
49  * @inCount: number of mailbox registers to load.
50  * @outCount: number of mailbox registers to return.
51  * @mbx_cmd: data pointer for mailbox in registers.
52  * @mbx_sts: data pointer for mailbox out registers.
53  *
54  * This routine issue mailbox commands and waits for completion.
55  * If outCount is 0, this routine completes successfully WITHOUT waiting
56  * for the mailbox command to complete.
57  **/
58 int qla4xxx_mailbox_command(struct scsi_qla_host *ha, uint8_t inCount,
59 			    uint8_t outCount, uint32_t *mbx_cmd,
60 			    uint32_t *mbx_sts)
61 {
62 	int status = QLA_ERROR;
63 	uint8_t i;
64 	u_long wait_count;
65 	unsigned long flags = 0;
66 	uint32_t dev_state;
67 
68 	/* Make sure that pointers are valid */
69 	if (!mbx_cmd || !mbx_sts) {
70 		DEBUG2(printk("scsi%ld: %s: Invalid mbx_cmd or mbx_sts "
71 			      "pointer\n", ha->host_no, __func__));
72 		return status;
73 	}
74 
75 	if (is_qla40XX(ha)) {
76 		if (test_bit(AF_HA_REMOVAL, &ha->flags)) {
77 			DEBUG2(ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: "
78 					  "prematurely completing mbx cmd as "
79 					  "adapter removal detected\n",
80 					  ha->host_no, __func__));
81 			return status;
82 		}
83 	}
84 
85 	if ((is_aer_supported(ha)) &&
86 	    (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))) {
87 		DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Perm failure on EEH, "
88 		    "timeout MBX Exiting.\n", ha->host_no, __func__));
89 		return status;
90 	}
91 
92 	/* Mailbox code active */
93 	wait_count = MBOX_TOV * 100;
94 
95 	while (wait_count--) {
96 		mutex_lock(&ha->mbox_sem);
97 		if (!test_bit(AF_MBOX_COMMAND, &ha->flags)) {
98 			set_bit(AF_MBOX_COMMAND, &ha->flags);
99 			mutex_unlock(&ha->mbox_sem);
100 			break;
101 		}
102 		mutex_unlock(&ha->mbox_sem);
103 		if (!wait_count) {
104 			DEBUG2(printk("scsi%ld: %s: mbox_sem failed\n",
105 				ha->host_no, __func__));
106 			return status;
107 		}
108 		msleep(10);
109 	}
110 
111 	if (is_qla80XX(ha)) {
112 		if (test_bit(AF_FW_RECOVERY, &ha->flags)) {
113 			DEBUG2(ql4_printk(KERN_WARNING, ha,
114 					  "scsi%ld: %s: prematurely completing mbx cmd as firmware recovery detected\n",
115 					  ha->host_no, __func__));
116 			goto mbox_exit;
117 		}
118 		/* Do not send any mbx cmd if h/w is in failed state*/
119 		ha->isp_ops->idc_lock(ha);
120 		dev_state = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE);
121 		ha->isp_ops->idc_unlock(ha);
122 		if (dev_state == QLA8XXX_DEV_FAILED) {
123 			ql4_printk(KERN_WARNING, ha,
124 				   "scsi%ld: %s: H/W is in failed state, do not send any mailbox commands\n",
125 				   ha->host_no, __func__);
126 			goto mbox_exit;
127 		}
128 	}
129 
130 	spin_lock_irqsave(&ha->hardware_lock, flags);
131 
132 	ha->mbox_status_count = outCount;
133 	for (i = 0; i < outCount; i++)
134 		ha->mbox_status[i] = 0;
135 
136 	/* Queue the mailbox command to the firmware */
137 	ha->isp_ops->queue_mailbox_command(ha, mbx_cmd, inCount);
138 
139 	spin_unlock_irqrestore(&ha->hardware_lock, flags);
140 
141 	/* Wait for completion */
142 
143 	/*
144 	 * If we don't want status, don't wait for the mailbox command to
145 	 * complete.  For example, MBOX_CMD_RESET_FW doesn't return status,
146 	 * you must poll the inbound Interrupt Mask for completion.
147 	 */
148 	if (outCount == 0) {
149 		status = QLA_SUCCESS;
150 		goto mbox_exit;
151 	}
152 
153 	/*
154 	 * Wait for completion: Poll or completion queue
155 	 */
156 	if (test_bit(AF_IRQ_ATTACHED, &ha->flags) &&
157 	    test_bit(AF_INTERRUPTS_ON, &ha->flags) &&
158 	    test_bit(AF_ONLINE, &ha->flags) &&
159 	    !test_bit(AF_HA_REMOVAL, &ha->flags)) {
160 		/* Do not poll for completion. Use completion queue */
161 		set_bit(AF_MBOX_COMMAND_NOPOLL, &ha->flags);
162 		wait_for_completion_timeout(&ha->mbx_intr_comp, MBOX_TOV * HZ);
163 		clear_bit(AF_MBOX_COMMAND_NOPOLL, &ha->flags);
164 	} else {
165 		/* Poll for command to complete */
166 		wait_count = jiffies + MBOX_TOV * HZ;
167 		while (test_bit(AF_MBOX_COMMAND_DONE, &ha->flags) == 0) {
168 			if (time_after_eq(jiffies, wait_count))
169 				break;
170 
171 			/*
172 			 * Service the interrupt.
173 			 * The ISR will save the mailbox status registers
174 			 * to a temporary storage location in the adapter
175 			 * structure.
176 			 */
177 
178 			spin_lock_irqsave(&ha->hardware_lock, flags);
179 			ha->isp_ops->process_mailbox_interrupt(ha, outCount);
180 			spin_unlock_irqrestore(&ha->hardware_lock, flags);
181 			msleep(10);
182 		}
183 	}
184 
185 	/* Check for mailbox timeout. */
186 	if (!test_bit(AF_MBOX_COMMAND_DONE, &ha->flags)) {
187 		if (is_qla80XX(ha) &&
188 		    test_bit(AF_FW_RECOVERY, &ha->flags)) {
189 			DEBUG2(ql4_printk(KERN_INFO, ha,
190 			    "scsi%ld: %s: prematurely completing mbx cmd as "
191 			    "firmware recovery detected\n",
192 			    ha->host_no, __func__));
193 			goto mbox_exit;
194 		}
195 		DEBUG2(printk("scsi%ld: Mailbox Cmd 0x%08X timed out ...,"
196 			      " Scheduling Adapter Reset\n", ha->host_no,
197 			      mbx_cmd[0]));
198 		ha->mailbox_timeout_count++;
199 		mbx_sts[0] = (-1);
200 		set_bit(DPC_RESET_HA, &ha->dpc_flags);
201 		if (is_qla8022(ha)) {
202 			ql4_printk(KERN_INFO, ha,
203 				   "disabling pause transmit on port 0 & 1.\n");
204 			qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
205 					CRB_NIU_XG_PAUSE_CTL_P0 |
206 					CRB_NIU_XG_PAUSE_CTL_P1);
207 		} else if (is_qla8032(ha)) {
208 			ql4_printk(KERN_INFO, ha, " %s: disabling pause transmit on port 0 & 1.\n",
209 				   __func__);
210 			qla4_83xx_disable_pause(ha);
211 		}
212 		goto mbox_exit;
213 	}
214 
215 	/*
216 	 * Copy the mailbox out registers to the caller's mailbox in/out
217 	 * structure.
218 	 */
219 	spin_lock_irqsave(&ha->hardware_lock, flags);
220 	for (i = 0; i < outCount; i++)
221 		mbx_sts[i] = ha->mbox_status[i];
222 
223 	/* Set return status and error flags (if applicable). */
224 	switch (ha->mbox_status[0]) {
225 	case MBOX_STS_COMMAND_COMPLETE:
226 		status = QLA_SUCCESS;
227 		break;
228 
229 	case MBOX_STS_INTERMEDIATE_COMPLETION:
230 		status = QLA_SUCCESS;
231 		break;
232 
233 	case MBOX_STS_BUSY:
234 		DEBUG2( printk("scsi%ld: %s: Cmd = %08X, ISP BUSY\n",
235 			       ha->host_no, __func__, mbx_cmd[0]));
236 		ha->mailbox_timeout_count++;
237 		break;
238 
239 	default:
240 		DEBUG2(printk("scsi%ld: %s: **** FAILED, cmd = %08X, "
241 			      "sts = %08X ****\n", ha->host_no, __func__,
242 			      mbx_cmd[0], mbx_sts[0]));
243 		break;
244 	}
245 	spin_unlock_irqrestore(&ha->hardware_lock, flags);
246 
247 mbox_exit:
248 	mutex_lock(&ha->mbox_sem);
249 	clear_bit(AF_MBOX_COMMAND, &ha->flags);
250 	mutex_unlock(&ha->mbox_sem);
251 	clear_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
252 
253 	return status;
254 }
255 
256 /**
257  * qla4xxx_get_minidump_template - Get the firmware template
258  * @ha: Pointer to host adapter structure.
259  * @phys_addr: dma address for template
260  *
261  * Obtain the minidump template from firmware during initialization
262  * as it may not be available when minidump is desired.
263  **/
264 int qla4xxx_get_minidump_template(struct scsi_qla_host *ha,
265 				  dma_addr_t phys_addr)
266 {
267 	uint32_t mbox_cmd[MBOX_REG_COUNT];
268 	uint32_t mbox_sts[MBOX_REG_COUNT];
269 	int status;
270 
271 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
272 	memset(&mbox_sts, 0, sizeof(mbox_sts));
273 
274 	mbox_cmd[0] = MBOX_CMD_MINIDUMP;
275 	mbox_cmd[1] = MINIDUMP_GET_TMPLT_SUBCOMMAND;
276 	mbox_cmd[2] = LSDW(phys_addr);
277 	mbox_cmd[3] = MSDW(phys_addr);
278 	mbox_cmd[4] = ha->fw_dump_tmplt_size;
279 	mbox_cmd[5] = 0;
280 
281 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 2, &mbox_cmd[0],
282 					 &mbox_sts[0]);
283 	if (status != QLA_SUCCESS) {
284 		DEBUG2(ql4_printk(KERN_INFO, ha,
285 				  "scsi%ld: %s: Cmd = %08X, mbx[0] = 0x%04x, mbx[1] = 0x%04x\n",
286 				  ha->host_no, __func__, mbox_cmd[0],
287 				  mbox_sts[0], mbox_sts[1]));
288 	}
289 	return status;
290 }
291 
292 /**
293  * qla4xxx_req_template_size - Get minidump template size from firmware.
294  * @ha: Pointer to host adapter structure.
295  **/
296 int qla4xxx_req_template_size(struct scsi_qla_host *ha)
297 {
298 	uint32_t mbox_cmd[MBOX_REG_COUNT];
299 	uint32_t mbox_sts[MBOX_REG_COUNT];
300 	int status;
301 
302 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
303 	memset(&mbox_sts, 0, sizeof(mbox_sts));
304 
305 	mbox_cmd[0] = MBOX_CMD_MINIDUMP;
306 	mbox_cmd[1] = MINIDUMP_GET_SIZE_SUBCOMMAND;
307 
308 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 8, &mbox_cmd[0],
309 					 &mbox_sts[0]);
310 	if (status == QLA_SUCCESS) {
311 		ha->fw_dump_tmplt_size = mbox_sts[1];
312 		DEBUG2(ql4_printk(KERN_INFO, ha,
313 				  "%s: sts[0]=0x%04x, template  size=0x%04x, size_cm_02=0x%04x, size_cm_04=0x%04x, size_cm_08=0x%04x, size_cm_10=0x%04x, size_cm_FF=0x%04x, version=0x%04x\n",
314 				  __func__, mbox_sts[0], mbox_sts[1],
315 				  mbox_sts[2], mbox_sts[3], mbox_sts[4],
316 				  mbox_sts[5], mbox_sts[6], mbox_sts[7]));
317 		if (ha->fw_dump_tmplt_size == 0)
318 			status = QLA_ERROR;
319 	} else {
320 		ql4_printk(KERN_WARNING, ha,
321 			   "%s: Error sts[0]=0x%04x, mbx[1]=0x%04x\n",
322 			   __func__, mbox_sts[0], mbox_sts[1]);
323 		status = QLA_ERROR;
324 	}
325 
326 	return status;
327 }
328 
329 void qla4xxx_mailbox_premature_completion(struct scsi_qla_host *ha)
330 {
331 	set_bit(AF_FW_RECOVERY, &ha->flags);
332 	ql4_printk(KERN_INFO, ha, "scsi%ld: %s: set FW RECOVERY!\n",
333 	    ha->host_no, __func__);
334 
335 	if (test_bit(AF_MBOX_COMMAND, &ha->flags)) {
336 		if (test_bit(AF_MBOX_COMMAND_NOPOLL, &ha->flags)) {
337 			complete(&ha->mbx_intr_comp);
338 			ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Due to fw "
339 			    "recovery, doing premature completion of "
340 			    "mbx cmd\n", ha->host_no, __func__);
341 
342 		} else {
343 			set_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
344 			ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Due to fw "
345 			    "recovery, doing premature completion of "
346 			    "polling mbx cmd\n", ha->host_no, __func__);
347 		}
348 	}
349 }
350 
351 static uint8_t
352 qla4xxx_set_ifcb(struct scsi_qla_host *ha, uint32_t *mbox_cmd,
353 		 uint32_t *mbox_sts, dma_addr_t init_fw_cb_dma)
354 {
355 	memset(mbox_cmd, 0, sizeof(mbox_cmd[0]) * MBOX_REG_COUNT);
356 	memset(mbox_sts, 0, sizeof(mbox_sts[0]) * MBOX_REG_COUNT);
357 
358 	if (is_qla8022(ha))
359 		qla4_82xx_wr_32(ha, ha->nx_db_wr_ptr, 0);
360 
361 	mbox_cmd[0] = MBOX_CMD_INITIALIZE_FIRMWARE;
362 	mbox_cmd[1] = 0;
363 	mbox_cmd[2] = LSDW(init_fw_cb_dma);
364 	mbox_cmd[3] = MSDW(init_fw_cb_dma);
365 	mbox_cmd[4] = sizeof(struct addr_ctrl_blk);
366 	mbox_cmd[5] = (IFCB_VER_MAX << 8) | IFCB_VER_MIN;
367 
368 	if (qla4xxx_mailbox_command(ha, 6, 6, mbox_cmd, mbox_sts) !=
369 	    QLA_SUCCESS) {
370 		DEBUG2(printk(KERN_WARNING "scsi%ld: %s: "
371 			      "MBOX_CMD_INITIALIZE_FIRMWARE"
372 			      " failed w/ status %04X\n",
373 			      ha->host_no, __func__, mbox_sts[0]));
374 		return QLA_ERROR;
375 	}
376 	return QLA_SUCCESS;
377 }
378 
379 uint8_t
380 qla4xxx_get_ifcb(struct scsi_qla_host *ha, uint32_t *mbox_cmd,
381 		 uint32_t *mbox_sts, dma_addr_t init_fw_cb_dma)
382 {
383 	memset(mbox_cmd, 0, sizeof(mbox_cmd[0]) * MBOX_REG_COUNT);
384 	memset(mbox_sts, 0, sizeof(mbox_sts[0]) * MBOX_REG_COUNT);
385 	mbox_cmd[0] = MBOX_CMD_GET_INIT_FW_CTRL_BLOCK;
386 	mbox_cmd[2] = LSDW(init_fw_cb_dma);
387 	mbox_cmd[3] = MSDW(init_fw_cb_dma);
388 	mbox_cmd[4] = sizeof(struct addr_ctrl_blk);
389 
390 	if (qla4xxx_mailbox_command(ha, 5, 5, mbox_cmd, mbox_sts) !=
391 	    QLA_SUCCESS) {
392 		DEBUG2(printk(KERN_WARNING "scsi%ld: %s: "
393 			      "MBOX_CMD_GET_INIT_FW_CTRL_BLOCK"
394 			      " failed w/ status %04X\n",
395 			      ha->host_no, __func__, mbox_sts[0]));
396 		return QLA_ERROR;
397 	}
398 	return QLA_SUCCESS;
399 }
400 
401 static void
402 qla4xxx_update_local_ip(struct scsi_qla_host *ha,
403 			struct addr_ctrl_blk *init_fw_cb)
404 {
405 	ha->ip_config.tcp_options = le16_to_cpu(init_fw_cb->ipv4_tcp_opts);
406 	ha->ip_config.ipv4_options = le16_to_cpu(init_fw_cb->ipv4_ip_opts);
407 	ha->ip_config.ipv4_addr_state =
408 				le16_to_cpu(init_fw_cb->ipv4_addr_state);
409 	ha->ip_config.eth_mtu_size =
410 				le16_to_cpu(init_fw_cb->eth_mtu_size);
411 	ha->ip_config.ipv4_port = le16_to_cpu(init_fw_cb->ipv4_port);
412 
413 	if (ha->acb_version == ACB_SUPPORTED) {
414 		ha->ip_config.ipv6_options = le16_to_cpu(init_fw_cb->ipv6_opts);
415 		ha->ip_config.ipv6_addl_options =
416 				le16_to_cpu(init_fw_cb->ipv6_addtl_opts);
417 	}
418 
419 	/* Save IPv4 Address Info */
420 	memcpy(ha->ip_config.ip_address, init_fw_cb->ipv4_addr,
421 	       min(sizeof(ha->ip_config.ip_address),
422 		   sizeof(init_fw_cb->ipv4_addr)));
423 	memcpy(ha->ip_config.subnet_mask, init_fw_cb->ipv4_subnet,
424 	       min(sizeof(ha->ip_config.subnet_mask),
425 		   sizeof(init_fw_cb->ipv4_subnet)));
426 	memcpy(ha->ip_config.gateway, init_fw_cb->ipv4_gw_addr,
427 	       min(sizeof(ha->ip_config.gateway),
428 		   sizeof(init_fw_cb->ipv4_gw_addr)));
429 
430 	ha->ip_config.ipv4_vlan_tag = be16_to_cpu(init_fw_cb->ipv4_vlan_tag);
431 
432 	if (is_ipv6_enabled(ha)) {
433 		/* Save IPv6 Address */
434 		ha->ip_config.ipv6_link_local_state =
435 			le16_to_cpu(init_fw_cb->ipv6_lnk_lcl_addr_state);
436 		ha->ip_config.ipv6_addr0_state =
437 				le16_to_cpu(init_fw_cb->ipv6_addr0_state);
438 		ha->ip_config.ipv6_addr1_state =
439 				le16_to_cpu(init_fw_cb->ipv6_addr1_state);
440 		ha->ip_config.ipv6_default_router_state =
441 				le16_to_cpu(init_fw_cb->ipv6_dflt_rtr_state);
442 		ha->ip_config.ipv6_link_local_addr.in6_u.u6_addr8[0] = 0xFE;
443 		ha->ip_config.ipv6_link_local_addr.in6_u.u6_addr8[1] = 0x80;
444 
445 		memcpy(&ha->ip_config.ipv6_link_local_addr.in6_u.u6_addr8[8],
446 		       init_fw_cb->ipv6_if_id,
447 		       min(sizeof(ha->ip_config.ipv6_link_local_addr)/2,
448 			   sizeof(init_fw_cb->ipv6_if_id)));
449 		memcpy(&ha->ip_config.ipv6_addr0, init_fw_cb->ipv6_addr0,
450 		       min(sizeof(ha->ip_config.ipv6_addr0),
451 			   sizeof(init_fw_cb->ipv6_addr0)));
452 		memcpy(&ha->ip_config.ipv6_addr1, init_fw_cb->ipv6_addr1,
453 		       min(sizeof(ha->ip_config.ipv6_addr1),
454 			   sizeof(init_fw_cb->ipv6_addr1)));
455 		memcpy(&ha->ip_config.ipv6_default_router_addr,
456 		       init_fw_cb->ipv6_dflt_rtr_addr,
457 		       min(sizeof(ha->ip_config.ipv6_default_router_addr),
458 			   sizeof(init_fw_cb->ipv6_dflt_rtr_addr)));
459 		ha->ip_config.ipv6_vlan_tag =
460 				be16_to_cpu(init_fw_cb->ipv6_vlan_tag);
461 		ha->ip_config.ipv6_port = le16_to_cpu(init_fw_cb->ipv6_port);
462 	}
463 }
464 
465 uint8_t
466 qla4xxx_update_local_ifcb(struct scsi_qla_host *ha,
467 			  uint32_t *mbox_cmd,
468 			  uint32_t *mbox_sts,
469 			  struct addr_ctrl_blk  *init_fw_cb,
470 			  dma_addr_t init_fw_cb_dma)
471 {
472 	if (qla4xxx_get_ifcb(ha, mbox_cmd, mbox_sts, init_fw_cb_dma)
473 	    != QLA_SUCCESS) {
474 		DEBUG2(printk(KERN_WARNING
475 			      "scsi%ld: %s: Failed to get init_fw_ctrl_blk\n",
476 			      ha->host_no, __func__));
477 		return QLA_ERROR;
478 	}
479 
480 	DEBUG2(qla4xxx_dump_buffer(init_fw_cb, sizeof(struct addr_ctrl_blk)));
481 
482 	/* Save some info in adapter structure. */
483 	ha->acb_version = init_fw_cb->acb_version;
484 	ha->firmware_options = le16_to_cpu(init_fw_cb->fw_options);
485 	ha->heartbeat_interval = init_fw_cb->hb_interval;
486 	memcpy(ha->name_string, init_fw_cb->iscsi_name,
487 		min(sizeof(ha->name_string),
488 		sizeof(init_fw_cb->iscsi_name)));
489 	ha->def_timeout = le16_to_cpu(init_fw_cb->def_timeout);
490 	/*memcpy(ha->alias, init_fw_cb->Alias,
491 	       min(sizeof(ha->alias), sizeof(init_fw_cb->Alias)));*/
492 
493 	qla4xxx_update_local_ip(ha, init_fw_cb);
494 
495 	return QLA_SUCCESS;
496 }
497 
498 /**
499  * qla4xxx_initialize_fw_cb - initializes firmware control block.
500  * @ha: Pointer to host adapter structure.
501  **/
502 int qla4xxx_initialize_fw_cb(struct scsi_qla_host * ha)
503 {
504 	struct addr_ctrl_blk *init_fw_cb;
505 	dma_addr_t init_fw_cb_dma;
506 	uint32_t mbox_cmd[MBOX_REG_COUNT];
507 	uint32_t mbox_sts[MBOX_REG_COUNT];
508 	int status = QLA_ERROR;
509 
510 	init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
511 					sizeof(struct addr_ctrl_blk),
512 					&init_fw_cb_dma, GFP_KERNEL);
513 	if (init_fw_cb == NULL) {
514 		DEBUG2(printk("scsi%ld: %s: Unable to alloc init_cb\n",
515 			      ha->host_no, __func__));
516 		goto exit_init_fw_cb_no_free;
517 	}
518 	memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
519 
520 	/* Get Initialize Firmware Control Block. */
521 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
522 	memset(&mbox_sts, 0, sizeof(mbox_sts));
523 
524 	if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma) !=
525 	    QLA_SUCCESS) {
526 		dma_free_coherent(&ha->pdev->dev,
527 				  sizeof(struct addr_ctrl_blk),
528 				  init_fw_cb, init_fw_cb_dma);
529 		goto exit_init_fw_cb;
530 	}
531 
532 	/* Initialize request and response queues. */
533 	qla4xxx_init_rings(ha);
534 
535 	/* Fill in the request and response queue information. */
536 	init_fw_cb->rqq_consumer_idx = cpu_to_le16(ha->request_out);
537 	init_fw_cb->compq_producer_idx = cpu_to_le16(ha->response_in);
538 	init_fw_cb->rqq_len = __constant_cpu_to_le16(REQUEST_QUEUE_DEPTH);
539 	init_fw_cb->compq_len = __constant_cpu_to_le16(RESPONSE_QUEUE_DEPTH);
540 	init_fw_cb->rqq_addr_lo = cpu_to_le32(LSDW(ha->request_dma));
541 	init_fw_cb->rqq_addr_hi = cpu_to_le32(MSDW(ha->request_dma));
542 	init_fw_cb->compq_addr_lo = cpu_to_le32(LSDW(ha->response_dma));
543 	init_fw_cb->compq_addr_hi = cpu_to_le32(MSDW(ha->response_dma));
544 	init_fw_cb->shdwreg_addr_lo = cpu_to_le32(LSDW(ha->shadow_regs_dma));
545 	init_fw_cb->shdwreg_addr_hi = cpu_to_le32(MSDW(ha->shadow_regs_dma));
546 
547 	/* Set up required options. */
548 	init_fw_cb->fw_options |=
549 		__constant_cpu_to_le16(FWOPT_SESSION_MODE |
550 				       FWOPT_INITIATOR_MODE);
551 
552 	if (is_qla80XX(ha))
553 		init_fw_cb->fw_options |=
554 		    __constant_cpu_to_le16(FWOPT_ENABLE_CRBDB);
555 
556 	init_fw_cb->fw_options &= __constant_cpu_to_le16(~FWOPT_TARGET_MODE);
557 
558 	init_fw_cb->add_fw_options = 0;
559 	init_fw_cb->add_fw_options |=
560 			__constant_cpu_to_le16(ADFWOPT_SERIALIZE_TASK_MGMT);
561 	init_fw_cb->add_fw_options |=
562 			__constant_cpu_to_le16(ADFWOPT_AUTOCONN_DISABLE);
563 
564 	if (qla4xxx_set_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)
565 		!= QLA_SUCCESS) {
566 		DEBUG2(printk(KERN_WARNING
567 			      "scsi%ld: %s: Failed to set init_fw_ctrl_blk\n",
568 			      ha->host_no, __func__));
569 		goto exit_init_fw_cb;
570 	}
571 
572 	if (qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0],
573 		init_fw_cb, init_fw_cb_dma) != QLA_SUCCESS) {
574 		DEBUG2(printk("scsi%ld: %s: Failed to update local ifcb\n",
575 				ha->host_no, __func__));
576 		goto exit_init_fw_cb;
577 	}
578 	status = QLA_SUCCESS;
579 
580 exit_init_fw_cb:
581 	dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
582 				init_fw_cb, init_fw_cb_dma);
583 exit_init_fw_cb_no_free:
584 	return status;
585 }
586 
587 /**
588  * qla4xxx_get_dhcp_ip_address - gets HBA ip address via DHCP
589  * @ha: Pointer to host adapter structure.
590  **/
591 int qla4xxx_get_dhcp_ip_address(struct scsi_qla_host * ha)
592 {
593 	struct addr_ctrl_blk *init_fw_cb;
594 	dma_addr_t init_fw_cb_dma;
595 	uint32_t mbox_cmd[MBOX_REG_COUNT];
596 	uint32_t mbox_sts[MBOX_REG_COUNT];
597 
598 	init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
599 					sizeof(struct addr_ctrl_blk),
600 					&init_fw_cb_dma, GFP_KERNEL);
601 	if (init_fw_cb == NULL) {
602 		printk("scsi%ld: %s: Unable to alloc init_cb\n", ha->host_no,
603 		       __func__);
604 		return QLA_ERROR;
605 	}
606 
607 	/* Get Initialize Firmware Control Block. */
608 	memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
609 	if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma) !=
610 	    QLA_SUCCESS) {
611 		DEBUG2(printk("scsi%ld: %s: Failed to get init_fw_ctrl_blk\n",
612 			      ha->host_no, __func__));
613 		dma_free_coherent(&ha->pdev->dev,
614 				  sizeof(struct addr_ctrl_blk),
615 				  init_fw_cb, init_fw_cb_dma);
616 		return QLA_ERROR;
617 	}
618 
619 	/* Save IP Address. */
620 	qla4xxx_update_local_ip(ha, init_fw_cb);
621 	dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
622 				init_fw_cb, init_fw_cb_dma);
623 
624 	return QLA_SUCCESS;
625 }
626 
627 /**
628  * qla4xxx_get_firmware_state - gets firmware state of HBA
629  * @ha: Pointer to host adapter structure.
630  **/
631 int qla4xxx_get_firmware_state(struct scsi_qla_host * ha)
632 {
633 	uint32_t mbox_cmd[MBOX_REG_COUNT];
634 	uint32_t mbox_sts[MBOX_REG_COUNT];
635 
636 	/* Get firmware version */
637 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
638 	memset(&mbox_sts, 0, sizeof(mbox_sts));
639 
640 	mbox_cmd[0] = MBOX_CMD_GET_FW_STATE;
641 
642 	if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 4, &mbox_cmd[0], &mbox_sts[0]) !=
643 	    QLA_SUCCESS) {
644 		DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_FW_STATE failed w/ "
645 			      "status %04X\n", ha->host_no, __func__,
646 			      mbox_sts[0]));
647 		return QLA_ERROR;
648 	}
649 	ha->firmware_state = mbox_sts[1];
650 	ha->board_id = mbox_sts[2];
651 	ha->addl_fw_state = mbox_sts[3];
652 	DEBUG2(printk("scsi%ld: %s firmware_state=0x%x\n",
653 		      ha->host_no, __func__, ha->firmware_state);)
654 
655 	return QLA_SUCCESS;
656 }
657 
658 /**
659  * qla4xxx_get_firmware_status - retrieves firmware status
660  * @ha: Pointer to host adapter structure.
661  **/
662 int qla4xxx_get_firmware_status(struct scsi_qla_host * ha)
663 {
664 	uint32_t mbox_cmd[MBOX_REG_COUNT];
665 	uint32_t mbox_sts[MBOX_REG_COUNT];
666 
667 	/* Get firmware version */
668 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
669 	memset(&mbox_sts, 0, sizeof(mbox_sts));
670 
671 	mbox_cmd[0] = MBOX_CMD_GET_FW_STATUS;
672 
673 	if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 3, &mbox_cmd[0], &mbox_sts[0]) !=
674 	    QLA_SUCCESS) {
675 		DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_FW_STATUS failed w/ "
676 			      "status %04X\n", ha->host_no, __func__,
677 			      mbox_sts[0]));
678 		return QLA_ERROR;
679 	}
680 
681 	ql4_printk(KERN_INFO, ha, "%ld firmware IOCBs available (%d).\n",
682 	    ha->host_no, mbox_sts[2]);
683 
684 	return QLA_SUCCESS;
685 }
686 
687 /**
688  * qla4xxx_get_fwddb_entry - retrieves firmware ddb entry
689  * @ha: Pointer to host adapter structure.
690  * @fw_ddb_index: Firmware's device database index
691  * @fw_ddb_entry: Pointer to firmware's device database entry structure
692  * @num_valid_ddb_entries: Pointer to number of valid ddb entries
693  * @next_ddb_index: Pointer to next valid device database index
694  * @fw_ddb_device_state: Pointer to device state
695  **/
696 int qla4xxx_get_fwddb_entry(struct scsi_qla_host *ha,
697 			    uint16_t fw_ddb_index,
698 			    struct dev_db_entry *fw_ddb_entry,
699 			    dma_addr_t fw_ddb_entry_dma,
700 			    uint32_t *num_valid_ddb_entries,
701 			    uint32_t *next_ddb_index,
702 			    uint32_t *fw_ddb_device_state,
703 			    uint32_t *conn_err_detail,
704 			    uint16_t *tcp_source_port_num,
705 			    uint16_t *connection_id)
706 {
707 	int status = QLA_ERROR;
708 	uint16_t options;
709 	uint32_t mbox_cmd[MBOX_REG_COUNT];
710 	uint32_t mbox_sts[MBOX_REG_COUNT];
711 
712 	/* Make sure the device index is valid */
713 	if (fw_ddb_index >= MAX_DDB_ENTRIES) {
714 		DEBUG2(printk("scsi%ld: %s: ddb [%d] out of range.\n",
715 			      ha->host_no, __func__, fw_ddb_index));
716 		goto exit_get_fwddb;
717 	}
718 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
719 	memset(&mbox_sts, 0, sizeof(mbox_sts));
720 	if (fw_ddb_entry)
721 		memset(fw_ddb_entry, 0, sizeof(struct dev_db_entry));
722 
723 	mbox_cmd[0] = MBOX_CMD_GET_DATABASE_ENTRY;
724 	mbox_cmd[1] = (uint32_t) fw_ddb_index;
725 	mbox_cmd[2] = LSDW(fw_ddb_entry_dma);
726 	mbox_cmd[3] = MSDW(fw_ddb_entry_dma);
727 	mbox_cmd[4] = sizeof(struct dev_db_entry);
728 
729 	if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 7, &mbox_cmd[0], &mbox_sts[0]) ==
730 	    QLA_ERROR) {
731 		DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_DATABASE_ENTRY failed"
732 			      " with status 0x%04X\n", ha->host_no, __func__,
733 			      mbox_sts[0]));
734 		goto exit_get_fwddb;
735 	}
736 	if (fw_ddb_index != mbox_sts[1]) {
737 		DEBUG2(printk("scsi%ld: %s: ddb mismatch [%d] != [%d].\n",
738 			      ha->host_no, __func__, fw_ddb_index,
739 			      mbox_sts[1]));
740 		goto exit_get_fwddb;
741 	}
742 	if (fw_ddb_entry) {
743 		options = le16_to_cpu(fw_ddb_entry->options);
744 		if (options & DDB_OPT_IPV6_DEVICE) {
745 			ql4_printk(KERN_INFO, ha, "%s: DDB[%d] MB0 %04x Tot %d "
746 				"Next %d State %04x ConnErr %08x %pI6 "
747 				":%04d \"%s\"\n", __func__, fw_ddb_index,
748 				mbox_sts[0], mbox_sts[2], mbox_sts[3],
749 				mbox_sts[4], mbox_sts[5],
750 				fw_ddb_entry->ip_addr,
751 				le16_to_cpu(fw_ddb_entry->port),
752 				fw_ddb_entry->iscsi_name);
753 		} else {
754 			ql4_printk(KERN_INFO, ha, "%s: DDB[%d] MB0 %04x Tot %d "
755 				"Next %d State %04x ConnErr %08x %pI4 "
756 				":%04d \"%s\"\n", __func__, fw_ddb_index,
757 				mbox_sts[0], mbox_sts[2], mbox_sts[3],
758 				mbox_sts[4], mbox_sts[5],
759 				fw_ddb_entry->ip_addr,
760 				le16_to_cpu(fw_ddb_entry->port),
761 				fw_ddb_entry->iscsi_name);
762 		}
763 	}
764 	if (num_valid_ddb_entries)
765 		*num_valid_ddb_entries = mbox_sts[2];
766 	if (next_ddb_index)
767 		*next_ddb_index = mbox_sts[3];
768 	if (fw_ddb_device_state)
769 		*fw_ddb_device_state = mbox_sts[4];
770 
771 	/*
772 	 * RA: This mailbox has been changed to pass connection error and
773 	 * details.  Its true for ISP4010 as per Version E - Not sure when it
774 	 * was changed.	 Get the time2wait from the fw_dd_entry field :
775 	 * default_time2wait which we call it as minTime2Wait DEV_DB_ENTRY
776 	 * struct.
777 	 */
778 	if (conn_err_detail)
779 		*conn_err_detail = mbox_sts[5];
780 	if (tcp_source_port_num)
781 		*tcp_source_port_num = (uint16_t) (mbox_sts[6] >> 16);
782 	if (connection_id)
783 		*connection_id = (uint16_t) mbox_sts[6] & 0x00FF;
784 	status = QLA_SUCCESS;
785 
786 exit_get_fwddb:
787 	return status;
788 }
789 
790 int qla4xxx_conn_open(struct scsi_qla_host *ha, uint16_t fw_ddb_index)
791 {
792 	uint32_t mbox_cmd[MBOX_REG_COUNT];
793 	uint32_t mbox_sts[MBOX_REG_COUNT];
794 	int status;
795 
796 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
797 	memset(&mbox_sts, 0, sizeof(mbox_sts));
798 
799 	mbox_cmd[0] = MBOX_CMD_CONN_OPEN;
800 	mbox_cmd[1] = fw_ddb_index;
801 
802 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 2, &mbox_cmd[0],
803 					 &mbox_sts[0]);
804 	DEBUG2(ql4_printk(KERN_INFO, ha,
805 			  "%s: status = %d mbx0 = 0x%x mbx1 = 0x%x\n",
806 			  __func__, status, mbox_sts[0], mbox_sts[1]));
807 	return status;
808 }
809 
810 /**
811  * qla4xxx_set_fwddb_entry - sets a ddb entry.
812  * @ha: Pointer to host adapter structure.
813  * @fw_ddb_index: Firmware's device database index
814  * @fw_ddb_entry_dma: dma address of ddb entry
815  * @mbx_sts: mailbox 0 to be returned or NULL
816  *
817  * This routine initializes or updates the adapter's device database
818  * entry for the specified device.
819  **/
820 int qla4xxx_set_ddb_entry(struct scsi_qla_host * ha, uint16_t fw_ddb_index,
821 			  dma_addr_t fw_ddb_entry_dma, uint32_t *mbx_sts)
822 {
823 	uint32_t mbox_cmd[MBOX_REG_COUNT];
824 	uint32_t mbox_sts[MBOX_REG_COUNT];
825 	int status;
826 
827 	/* Do not wait for completion. The firmware will send us an
828 	 * ASTS_DATABASE_CHANGED (0x8014) to notify us of the login status.
829 	 */
830 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
831 	memset(&mbox_sts, 0, sizeof(mbox_sts));
832 
833 	mbox_cmd[0] = MBOX_CMD_SET_DATABASE_ENTRY;
834 	mbox_cmd[1] = (uint32_t) fw_ddb_index;
835 	mbox_cmd[2] = LSDW(fw_ddb_entry_dma);
836 	mbox_cmd[3] = MSDW(fw_ddb_entry_dma);
837 	mbox_cmd[4] = sizeof(struct dev_db_entry);
838 
839 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0],
840 					 &mbox_sts[0]);
841 	if (mbx_sts)
842 		*mbx_sts = mbox_sts[0];
843 	DEBUG2(printk("scsi%ld: %s: status=%d mbx0=0x%x mbx4=0x%x\n",
844 	    ha->host_no, __func__, status, mbox_sts[0], mbox_sts[4]);)
845 
846 	return status;
847 }
848 
849 int qla4xxx_session_logout_ddb(struct scsi_qla_host *ha,
850 			       struct ddb_entry *ddb_entry, int options)
851 {
852 	int status;
853 	uint32_t mbox_cmd[MBOX_REG_COUNT];
854 	uint32_t mbox_sts[MBOX_REG_COUNT];
855 
856 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
857 	memset(&mbox_sts, 0, sizeof(mbox_sts));
858 
859 	mbox_cmd[0] = MBOX_CMD_CONN_CLOSE_SESS_LOGOUT;
860 	mbox_cmd[1] = ddb_entry->fw_ddb_index;
861 	mbox_cmd[3] = options;
862 
863 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 2, &mbox_cmd[0],
864 					 &mbox_sts[0]);
865 	if (status != QLA_SUCCESS) {
866 		DEBUG2(ql4_printk(KERN_INFO, ha,
867 				  "%s: MBOX_CMD_CONN_CLOSE_SESS_LOGOUT "
868 				  "failed sts %04X %04X", __func__,
869 				  mbox_sts[0], mbox_sts[1]));
870 	}
871 
872 	return status;
873 }
874 
875 /**
876  * qla4xxx_get_crash_record - retrieves crash record.
877  * @ha: Pointer to host adapter structure.
878  *
879  * This routine retrieves a crash record from the QLA4010 after an 8002h aen.
880  **/
881 void qla4xxx_get_crash_record(struct scsi_qla_host * ha)
882 {
883 	uint32_t mbox_cmd[MBOX_REG_COUNT];
884 	uint32_t mbox_sts[MBOX_REG_COUNT];
885 	struct crash_record *crash_record = NULL;
886 	dma_addr_t crash_record_dma = 0;
887 	uint32_t crash_record_size = 0;
888 
889 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
890 	memset(&mbox_sts, 0, sizeof(mbox_cmd));
891 
892 	/* Get size of crash record. */
893 	mbox_cmd[0] = MBOX_CMD_GET_CRASH_RECORD;
894 
895 	if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
896 	    QLA_SUCCESS) {
897 		DEBUG2(printk("scsi%ld: %s: ERROR: Unable to retrieve size!\n",
898 			      ha->host_no, __func__));
899 		goto exit_get_crash_record;
900 	}
901 	crash_record_size = mbox_sts[4];
902 	if (crash_record_size == 0) {
903 		DEBUG2(printk("scsi%ld: %s: ERROR: Crash record size is 0!\n",
904 			      ha->host_no, __func__));
905 		goto exit_get_crash_record;
906 	}
907 
908 	/* Alloc Memory for Crash Record. */
909 	crash_record = dma_alloc_coherent(&ha->pdev->dev, crash_record_size,
910 					  &crash_record_dma, GFP_KERNEL);
911 	if (crash_record == NULL)
912 		goto exit_get_crash_record;
913 
914 	/* Get Crash Record. */
915 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
916 	memset(&mbox_sts, 0, sizeof(mbox_cmd));
917 
918 	mbox_cmd[0] = MBOX_CMD_GET_CRASH_RECORD;
919 	mbox_cmd[2] = LSDW(crash_record_dma);
920 	mbox_cmd[3] = MSDW(crash_record_dma);
921 	mbox_cmd[4] = crash_record_size;
922 
923 	if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
924 	    QLA_SUCCESS)
925 		goto exit_get_crash_record;
926 
927 	/* Dump Crash Record. */
928 
929 exit_get_crash_record:
930 	if (crash_record)
931 		dma_free_coherent(&ha->pdev->dev, crash_record_size,
932 				  crash_record, crash_record_dma);
933 }
934 
935 /**
936  * qla4xxx_get_conn_event_log - retrieves connection event log
937  * @ha: Pointer to host adapter structure.
938  **/
939 void qla4xxx_get_conn_event_log(struct scsi_qla_host * ha)
940 {
941 	uint32_t mbox_cmd[MBOX_REG_COUNT];
942 	uint32_t mbox_sts[MBOX_REG_COUNT];
943 	struct conn_event_log_entry *event_log = NULL;
944 	dma_addr_t event_log_dma = 0;
945 	uint32_t event_log_size = 0;
946 	uint32_t num_valid_entries;
947 	uint32_t      oldest_entry = 0;
948 	uint32_t	max_event_log_entries;
949 	uint8_t		i;
950 
951 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
952 	memset(&mbox_sts, 0, sizeof(mbox_cmd));
953 
954 	/* Get size of crash record. */
955 	mbox_cmd[0] = MBOX_CMD_GET_CONN_EVENT_LOG;
956 
957 	if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
958 	    QLA_SUCCESS)
959 		goto exit_get_event_log;
960 
961 	event_log_size = mbox_sts[4];
962 	if (event_log_size == 0)
963 		goto exit_get_event_log;
964 
965 	/* Alloc Memory for Crash Record. */
966 	event_log = dma_alloc_coherent(&ha->pdev->dev, event_log_size,
967 				       &event_log_dma, GFP_KERNEL);
968 	if (event_log == NULL)
969 		goto exit_get_event_log;
970 
971 	/* Get Crash Record. */
972 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
973 	memset(&mbox_sts, 0, sizeof(mbox_cmd));
974 
975 	mbox_cmd[0] = MBOX_CMD_GET_CONN_EVENT_LOG;
976 	mbox_cmd[2] = LSDW(event_log_dma);
977 	mbox_cmd[3] = MSDW(event_log_dma);
978 
979 	if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
980 	    QLA_SUCCESS) {
981 		DEBUG2(printk("scsi%ld: %s: ERROR: Unable to retrieve event "
982 			      "log!\n", ha->host_no, __func__));
983 		goto exit_get_event_log;
984 	}
985 
986 	/* Dump Event Log. */
987 	num_valid_entries = mbox_sts[1];
988 
989 	max_event_log_entries = event_log_size /
990 		sizeof(struct conn_event_log_entry);
991 
992 	if (num_valid_entries > max_event_log_entries)
993 		oldest_entry = num_valid_entries % max_event_log_entries;
994 
995 	DEBUG3(printk("scsi%ld: Connection Event Log Dump (%d entries):\n",
996 		      ha->host_no, num_valid_entries));
997 
998 	if (ql4xextended_error_logging == 3) {
999 		if (oldest_entry == 0) {
1000 			/* Circular Buffer has not wrapped around */
1001 			for (i=0; i < num_valid_entries; i++) {
1002 				qla4xxx_dump_buffer((uint8_t *)event_log+
1003 						    (i*sizeof(*event_log)),
1004 						    sizeof(*event_log));
1005 			}
1006 		}
1007 		else {
1008 			/* Circular Buffer has wrapped around -
1009 			 * display accordingly*/
1010 			for (i=oldest_entry; i < max_event_log_entries; i++) {
1011 				qla4xxx_dump_buffer((uint8_t *)event_log+
1012 						    (i*sizeof(*event_log)),
1013 						    sizeof(*event_log));
1014 			}
1015 			for (i=0; i < oldest_entry; i++) {
1016 				qla4xxx_dump_buffer((uint8_t *)event_log+
1017 						    (i*sizeof(*event_log)),
1018 						    sizeof(*event_log));
1019 			}
1020 		}
1021 	}
1022 
1023 exit_get_event_log:
1024 	if (event_log)
1025 		dma_free_coherent(&ha->pdev->dev, event_log_size, event_log,
1026 				  event_log_dma);
1027 }
1028 
1029 /**
1030  * qla4xxx_abort_task - issues Abort Task
1031  * @ha: Pointer to host adapter structure.
1032  * @srb: Pointer to srb entry
1033  *
1034  * This routine performs a LUN RESET on the specified target/lun.
1035  * The caller must ensure that the ddb_entry and lun_entry pointers
1036  * are valid before calling this routine.
1037  **/
1038 int qla4xxx_abort_task(struct scsi_qla_host *ha, struct srb *srb)
1039 {
1040 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1041 	uint32_t mbox_sts[MBOX_REG_COUNT];
1042 	struct scsi_cmnd *cmd = srb->cmd;
1043 	int status = QLA_SUCCESS;
1044 	unsigned long flags = 0;
1045 	uint32_t index;
1046 
1047 	/*
1048 	 * Send abort task command to ISP, so that the ISP will return
1049 	 * request with ABORT status
1050 	 */
1051 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1052 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1053 
1054 	spin_lock_irqsave(&ha->hardware_lock, flags);
1055 	index = (unsigned long)(unsigned char *)cmd->host_scribble;
1056 	spin_unlock_irqrestore(&ha->hardware_lock, flags);
1057 
1058 	/* Firmware already posted completion on response queue */
1059 	if (index == MAX_SRBS)
1060 		return status;
1061 
1062 	mbox_cmd[0] = MBOX_CMD_ABORT_TASK;
1063 	mbox_cmd[1] = srb->ddb->fw_ddb_index;
1064 	mbox_cmd[2] = index;
1065 	/* Immediate Command Enable */
1066 	mbox_cmd[5] = 0x01;
1067 
1068 	qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0],
1069 	    &mbox_sts[0]);
1070 	if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE) {
1071 		status = QLA_ERROR;
1072 
1073 		DEBUG2(printk(KERN_WARNING "scsi%ld:%d:%d: abort task FAILED: "
1074 		    "mbx0=%04X, mb1=%04X, mb2=%04X, mb3=%04X, mb4=%04X\n",
1075 		    ha->host_no, cmd->device->id, cmd->device->lun, mbox_sts[0],
1076 		    mbox_sts[1], mbox_sts[2], mbox_sts[3], mbox_sts[4]));
1077 	}
1078 
1079 	return status;
1080 }
1081 
1082 /**
1083  * qla4xxx_reset_lun - issues LUN Reset
1084  * @ha: Pointer to host adapter structure.
1085  * @ddb_entry: Pointer to device database entry
1086  * @lun: lun number
1087  *
1088  * This routine performs a LUN RESET on the specified target/lun.
1089  * The caller must ensure that the ddb_entry and lun_entry pointers
1090  * are valid before calling this routine.
1091  **/
1092 int qla4xxx_reset_lun(struct scsi_qla_host * ha, struct ddb_entry * ddb_entry,
1093 		      int lun)
1094 {
1095 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1096 	uint32_t mbox_sts[MBOX_REG_COUNT];
1097 	int status = QLA_SUCCESS;
1098 
1099 	DEBUG2(printk("scsi%ld:%d:%d: lun reset issued\n", ha->host_no,
1100 		      ddb_entry->fw_ddb_index, lun));
1101 
1102 	/*
1103 	 * Send lun reset command to ISP, so that the ISP will return all
1104 	 * outstanding requests with RESET status
1105 	 */
1106 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1107 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1108 
1109 	mbox_cmd[0] = MBOX_CMD_LUN_RESET;
1110 	mbox_cmd[1] = ddb_entry->fw_ddb_index;
1111 	mbox_cmd[2] = lun << 8;
1112 	mbox_cmd[5] = 0x01;	/* Immediate Command Enable */
1113 
1114 	qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0], &mbox_sts[0]);
1115 	if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE &&
1116 	    mbox_sts[0] != MBOX_STS_COMMAND_ERROR)
1117 		status = QLA_ERROR;
1118 
1119 	return status;
1120 }
1121 
1122 /**
1123  * qla4xxx_reset_target - issues target Reset
1124  * @ha: Pointer to host adapter structure.
1125  * @db_entry: Pointer to device database entry
1126  * @un_entry: Pointer to lun entry structure
1127  *
1128  * This routine performs a TARGET RESET on the specified target.
1129  * The caller must ensure that the ddb_entry pointers
1130  * are valid before calling this routine.
1131  **/
1132 int qla4xxx_reset_target(struct scsi_qla_host *ha,
1133 			 struct ddb_entry *ddb_entry)
1134 {
1135 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1136 	uint32_t mbox_sts[MBOX_REG_COUNT];
1137 	int status = QLA_SUCCESS;
1138 
1139 	DEBUG2(printk("scsi%ld:%d: target reset issued\n", ha->host_no,
1140 		      ddb_entry->fw_ddb_index));
1141 
1142 	/*
1143 	 * Send target reset command to ISP, so that the ISP will return all
1144 	 * outstanding requests with RESET status
1145 	 */
1146 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1147 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1148 
1149 	mbox_cmd[0] = MBOX_CMD_TARGET_WARM_RESET;
1150 	mbox_cmd[1] = ddb_entry->fw_ddb_index;
1151 	mbox_cmd[5] = 0x01;	/* Immediate Command Enable */
1152 
1153 	qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0],
1154 				&mbox_sts[0]);
1155 	if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE &&
1156 	    mbox_sts[0] != MBOX_STS_COMMAND_ERROR)
1157 		status = QLA_ERROR;
1158 
1159 	return status;
1160 }
1161 
1162 int qla4xxx_get_flash(struct scsi_qla_host * ha, dma_addr_t dma_addr,
1163 		      uint32_t offset, uint32_t len)
1164 {
1165 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1166 	uint32_t mbox_sts[MBOX_REG_COUNT];
1167 
1168 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1169 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1170 
1171 	mbox_cmd[0] = MBOX_CMD_READ_FLASH;
1172 	mbox_cmd[1] = LSDW(dma_addr);
1173 	mbox_cmd[2] = MSDW(dma_addr);
1174 	mbox_cmd[3] = offset;
1175 	mbox_cmd[4] = len;
1176 
1177 	if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 2, &mbox_cmd[0], &mbox_sts[0]) !=
1178 	    QLA_SUCCESS) {
1179 		DEBUG2(printk("scsi%ld: %s: MBOX_CMD_READ_FLASH, failed w/ "
1180 		    "status %04X %04X, offset %08x, len %08x\n", ha->host_no,
1181 		    __func__, mbox_sts[0], mbox_sts[1], offset, len));
1182 		return QLA_ERROR;
1183 	}
1184 	return QLA_SUCCESS;
1185 }
1186 
1187 /**
1188  * qla4xxx_about_firmware - gets FW, iscsi draft and boot loader version
1189  * @ha: Pointer to host adapter structure.
1190  *
1191  * Retrieves the FW version, iSCSI draft version & bootloader version of HBA.
1192  * Mailboxes 2 & 3 may hold an address for data. Make sure that we write 0 to
1193  * those mailboxes, if unused.
1194  **/
1195 int qla4xxx_about_firmware(struct scsi_qla_host *ha)
1196 {
1197 	struct about_fw_info *about_fw = NULL;
1198 	dma_addr_t about_fw_dma;
1199 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1200 	uint32_t mbox_sts[MBOX_REG_COUNT];
1201 	int status = QLA_ERROR;
1202 
1203 	about_fw = dma_alloc_coherent(&ha->pdev->dev,
1204 				      sizeof(struct about_fw_info),
1205 				      &about_fw_dma, GFP_KERNEL);
1206 	if (!about_fw) {
1207 		DEBUG2(ql4_printk(KERN_ERR, ha, "%s: Unable to alloc memory "
1208 				  "for about_fw\n", __func__));
1209 		return status;
1210 	}
1211 
1212 	memset(about_fw, 0, sizeof(struct about_fw_info));
1213 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1214 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1215 
1216 	mbox_cmd[0] = MBOX_CMD_ABOUT_FW;
1217 	mbox_cmd[2] = LSDW(about_fw_dma);
1218 	mbox_cmd[3] = MSDW(about_fw_dma);
1219 	mbox_cmd[4] = sizeof(struct about_fw_info);
1220 
1221 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, MBOX_REG_COUNT,
1222 					 &mbox_cmd[0], &mbox_sts[0]);
1223 	if (status != QLA_SUCCESS) {
1224 		DEBUG2(ql4_printk(KERN_WARNING, ha, "%s: MBOX_CMD_ABOUT_FW "
1225 				  "failed w/ status %04X\n", __func__,
1226 				  mbox_sts[0]));
1227 		goto exit_about_fw;
1228 	}
1229 
1230 	/* Save version information. */
1231 	ha->firmware_version[0] = le16_to_cpu(about_fw->fw_major);
1232 	ha->firmware_version[1] = le16_to_cpu(about_fw->fw_minor);
1233 	ha->patch_number = le16_to_cpu(about_fw->fw_patch);
1234 	ha->build_number = le16_to_cpu(about_fw->fw_build);
1235 	ha->iscsi_major = le16_to_cpu(about_fw->iscsi_major);
1236 	ha->iscsi_minor = le16_to_cpu(about_fw->iscsi_minor);
1237 	ha->bootload_major = le16_to_cpu(about_fw->bootload_major);
1238 	ha->bootload_minor = le16_to_cpu(about_fw->bootload_minor);
1239 	ha->bootload_patch = le16_to_cpu(about_fw->bootload_patch);
1240 	ha->bootload_build = le16_to_cpu(about_fw->bootload_build);
1241 	status = QLA_SUCCESS;
1242 
1243 exit_about_fw:
1244 	dma_free_coherent(&ha->pdev->dev, sizeof(struct about_fw_info),
1245 			  about_fw, about_fw_dma);
1246 	return status;
1247 }
1248 
1249 static int qla4xxx_get_default_ddb(struct scsi_qla_host *ha, uint32_t options,
1250 				   dma_addr_t dma_addr)
1251 {
1252 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1253 	uint32_t mbox_sts[MBOX_REG_COUNT];
1254 
1255 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1256 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1257 
1258 	mbox_cmd[0] = MBOX_CMD_GET_DATABASE_ENTRY_DEFAULTS;
1259 	mbox_cmd[1] = options;
1260 	mbox_cmd[2] = LSDW(dma_addr);
1261 	mbox_cmd[3] = MSDW(dma_addr);
1262 
1263 	if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0], &mbox_sts[0]) !=
1264 	    QLA_SUCCESS) {
1265 		DEBUG2(printk("scsi%ld: %s: failed status %04X\n",
1266 		     ha->host_no, __func__, mbox_sts[0]));
1267 		return QLA_ERROR;
1268 	}
1269 	return QLA_SUCCESS;
1270 }
1271 
1272 int qla4xxx_req_ddb_entry(struct scsi_qla_host *ha, uint32_t ddb_index,
1273 			  uint32_t *mbx_sts)
1274 {
1275 	int status;
1276 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1277 	uint32_t mbox_sts[MBOX_REG_COUNT];
1278 
1279 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1280 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1281 
1282 	mbox_cmd[0] = MBOX_CMD_REQUEST_DATABASE_ENTRY;
1283 	mbox_cmd[1] = ddb_index;
1284 
1285 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0],
1286 					 &mbox_sts[0]);
1287 	if (status != QLA_SUCCESS) {
1288 		DEBUG2(ql4_printk(KERN_ERR, ha, "%s: failed status %04X\n",
1289 				   __func__, mbox_sts[0]));
1290 	}
1291 
1292 	*mbx_sts = mbox_sts[0];
1293 	return status;
1294 }
1295 
1296 int qla4xxx_clear_ddb_entry(struct scsi_qla_host *ha, uint32_t ddb_index)
1297 {
1298 	int status;
1299 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1300 	uint32_t mbox_sts[MBOX_REG_COUNT];
1301 
1302 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1303 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1304 
1305 	mbox_cmd[0] = MBOX_CMD_CLEAR_DATABASE_ENTRY;
1306 	mbox_cmd[1] = ddb_index;
1307 
1308 	status = qla4xxx_mailbox_command(ha, 2, 1, &mbox_cmd[0],
1309 					 &mbox_sts[0]);
1310 	if (status != QLA_SUCCESS) {
1311 		DEBUG2(ql4_printk(KERN_ERR, ha, "%s: failed status %04X\n",
1312 				   __func__, mbox_sts[0]));
1313 	}
1314 
1315 	return status;
1316 }
1317 
1318 int qla4xxx_set_flash(struct scsi_qla_host *ha, dma_addr_t dma_addr,
1319 		      uint32_t offset, uint32_t length, uint32_t options)
1320 {
1321 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1322 	uint32_t mbox_sts[MBOX_REG_COUNT];
1323 	int status = QLA_SUCCESS;
1324 
1325 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1326 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1327 
1328 	mbox_cmd[0] = MBOX_CMD_WRITE_FLASH;
1329 	mbox_cmd[1] = LSDW(dma_addr);
1330 	mbox_cmd[2] = MSDW(dma_addr);
1331 	mbox_cmd[3] = offset;
1332 	mbox_cmd[4] = length;
1333 	mbox_cmd[5] = options;
1334 
1335 	status = qla4xxx_mailbox_command(ha, 6, 2, &mbox_cmd[0], &mbox_sts[0]);
1336 	if (status != QLA_SUCCESS) {
1337 		DEBUG2(ql4_printk(KERN_WARNING, ha, "%s: MBOX_CMD_WRITE_FLASH "
1338 				  "failed w/ status %04X, mbx1 %04X\n",
1339 				  __func__, mbox_sts[0], mbox_sts[1]));
1340 	}
1341 	return status;
1342 }
1343 
1344 int qla4xxx_bootdb_by_index(struct scsi_qla_host *ha,
1345 			    struct dev_db_entry *fw_ddb_entry,
1346 			    dma_addr_t fw_ddb_entry_dma, uint16_t ddb_index)
1347 {
1348 	uint32_t dev_db_start_offset = FLASH_OFFSET_DB_INFO;
1349 	uint32_t dev_db_end_offset;
1350 	int status = QLA_ERROR;
1351 
1352 	memset(fw_ddb_entry, 0, sizeof(*fw_ddb_entry));
1353 
1354 	dev_db_start_offset += (ddb_index * sizeof(*fw_ddb_entry));
1355 	dev_db_end_offset = FLASH_OFFSET_DB_END;
1356 
1357 	if (dev_db_start_offset > dev_db_end_offset) {
1358 		DEBUG2(ql4_printk(KERN_ERR, ha,
1359 				  "%s:Invalid DDB index %d", __func__,
1360 				  ddb_index));
1361 		goto exit_bootdb_failed;
1362 	}
1363 
1364 	if (qla4xxx_get_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
1365 			      sizeof(*fw_ddb_entry)) != QLA_SUCCESS) {
1366 		ql4_printk(KERN_ERR, ha, "scsi%ld: %s: Get Flash"
1367 			   "failed\n", ha->host_no, __func__);
1368 		goto exit_bootdb_failed;
1369 	}
1370 
1371 	if (fw_ddb_entry->cookie == DDB_VALID_COOKIE)
1372 		status = QLA_SUCCESS;
1373 
1374 exit_bootdb_failed:
1375 	return status;
1376 }
1377 
1378 int qla4xxx_get_chap(struct scsi_qla_host *ha, char *username, char *password,
1379 		     uint16_t idx)
1380 {
1381 	int ret = 0;
1382 	int rval = QLA_ERROR;
1383 	uint32_t offset = 0, chap_size;
1384 	struct ql4_chap_table *chap_table;
1385 	dma_addr_t chap_dma;
1386 
1387 	chap_table = dma_pool_alloc(ha->chap_dma_pool, GFP_KERNEL, &chap_dma);
1388 	if (chap_table == NULL) {
1389 		ret = -ENOMEM;
1390 		goto exit_get_chap;
1391 	}
1392 
1393 	chap_size = sizeof(struct ql4_chap_table);
1394 	memset(chap_table, 0, chap_size);
1395 
1396 	if (is_qla40XX(ha))
1397 		offset = FLASH_CHAP_OFFSET | (idx * chap_size);
1398 	else {
1399 		offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
1400 		/* flt_chap_size is CHAP table size for both ports
1401 		 * so divide it by 2 to calculate the offset for second port
1402 		 */
1403 		if (ha->port_num == 1)
1404 			offset += (ha->hw.flt_chap_size / 2);
1405 		offset += (idx * chap_size);
1406 	}
1407 
1408 	rval = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
1409 	if (rval != QLA_SUCCESS) {
1410 		ret = -EINVAL;
1411 		goto exit_get_chap;
1412 	}
1413 
1414 	DEBUG2(ql4_printk(KERN_INFO, ha, "Chap Cookie: x%x\n",
1415 		__le16_to_cpu(chap_table->cookie)));
1416 
1417 	if (__le16_to_cpu(chap_table->cookie) != CHAP_VALID_COOKIE) {
1418 		ql4_printk(KERN_ERR, ha, "No valid chap entry found\n");
1419 		goto exit_get_chap;
1420 	}
1421 
1422 	strncpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
1423 	strncpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
1424 	chap_table->cookie = __constant_cpu_to_le16(CHAP_VALID_COOKIE);
1425 
1426 exit_get_chap:
1427 	dma_pool_free(ha->chap_dma_pool, chap_table, chap_dma);
1428 	return ret;
1429 }
1430 
1431 static int qla4xxx_set_chap(struct scsi_qla_host *ha, char *username,
1432 			    char *password, uint16_t idx, int bidi)
1433 {
1434 	int ret = 0;
1435 	int rval = QLA_ERROR;
1436 	uint32_t offset = 0;
1437 	struct ql4_chap_table *chap_table;
1438 	dma_addr_t chap_dma;
1439 
1440 	chap_table = dma_pool_alloc(ha->chap_dma_pool, GFP_KERNEL, &chap_dma);
1441 	if (chap_table == NULL) {
1442 		ret =  -ENOMEM;
1443 		goto exit_set_chap;
1444 	}
1445 
1446 	memset(chap_table, 0, sizeof(struct ql4_chap_table));
1447 	if (bidi)
1448 		chap_table->flags |= BIT_6; /* peer */
1449 	else
1450 		chap_table->flags |= BIT_7; /* local */
1451 	chap_table->secret_len = strlen(password);
1452 	strncpy(chap_table->secret, password, MAX_CHAP_SECRET_LEN);
1453 	strncpy(chap_table->name, username, MAX_CHAP_NAME_LEN);
1454 	chap_table->cookie = __constant_cpu_to_le16(CHAP_VALID_COOKIE);
1455 	offset = FLASH_CHAP_OFFSET | (idx * sizeof(struct ql4_chap_table));
1456 	rval = qla4xxx_set_flash(ha, chap_dma, offset,
1457 				sizeof(struct ql4_chap_table),
1458 				FLASH_OPT_RMW_COMMIT);
1459 
1460 	if (rval == QLA_SUCCESS && ha->chap_list) {
1461 		/* Update ha chap_list cache */
1462 		memcpy((struct ql4_chap_table *)ha->chap_list + idx,
1463 		       chap_table, sizeof(struct ql4_chap_table));
1464 	}
1465 	dma_pool_free(ha->chap_dma_pool, chap_table, chap_dma);
1466 	if (rval != QLA_SUCCESS)
1467 		ret =  -EINVAL;
1468 
1469 exit_set_chap:
1470 	return ret;
1471 }
1472 
1473 /**
1474  * qla4xxx_get_chap_index - Get chap index given username and secret
1475  * @ha: pointer to adapter structure
1476  * @username: CHAP username to be searched
1477  * @password: CHAP password to be searched
1478  * @bidi: Is this a BIDI CHAP
1479  * @chap_index: CHAP index to be returned
1480  *
1481  * Match the username and password in the chap_list, return the index if a
1482  * match is found. If a match is not found then add the entry in FLASH and
1483  * return the index at which entry is written in the FLASH.
1484  **/
1485 int qla4xxx_get_chap_index(struct scsi_qla_host *ha, char *username,
1486 			   char *password, int bidi, uint16_t *chap_index)
1487 {
1488 	int i, rval;
1489 	int free_index = -1;
1490 	int found_index = 0;
1491 	int max_chap_entries = 0;
1492 	struct ql4_chap_table *chap_table;
1493 
1494 	if (is_qla8022(ha))
1495 		max_chap_entries = (ha->hw.flt_chap_size / 2) /
1496 						sizeof(struct ql4_chap_table);
1497 	else
1498 		max_chap_entries = MAX_CHAP_ENTRIES_40XX;
1499 
1500 	if (!ha->chap_list) {
1501 		ql4_printk(KERN_ERR, ha, "Do not have CHAP table cache\n");
1502 		return QLA_ERROR;
1503 	}
1504 
1505 	if (!username || !password) {
1506 		ql4_printk(KERN_ERR, ha, "Do not have username and psw\n");
1507 		return QLA_ERROR;
1508 	}
1509 
1510 	mutex_lock(&ha->chap_sem);
1511 	for (i = 0; i < max_chap_entries; i++) {
1512 		chap_table = (struct ql4_chap_table *)ha->chap_list + i;
1513 		if (chap_table->cookie !=
1514 		    __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
1515 			if (i > MAX_RESRV_CHAP_IDX && free_index == -1)
1516 				free_index = i;
1517 			continue;
1518 		}
1519 		if (bidi) {
1520 			if (chap_table->flags & BIT_7)
1521 				continue;
1522 		} else {
1523 			if (chap_table->flags & BIT_6)
1524 				continue;
1525 		}
1526 		if (!strncmp(chap_table->secret, password,
1527 			     MAX_CHAP_SECRET_LEN) &&
1528 		    !strncmp(chap_table->name, username,
1529 			     MAX_CHAP_NAME_LEN)) {
1530 			*chap_index = i;
1531 			found_index = 1;
1532 			break;
1533 		}
1534 	}
1535 
1536 	/* If chap entry is not present and a free index is available then
1537 	 * write the entry in flash
1538 	 */
1539 	if (!found_index && free_index != -1) {
1540 		rval = qla4xxx_set_chap(ha, username, password,
1541 					free_index, bidi);
1542 		if (!rval) {
1543 			*chap_index = free_index;
1544 			found_index = 1;
1545 		}
1546 	}
1547 
1548 	mutex_unlock(&ha->chap_sem);
1549 
1550 	if (found_index)
1551 		return QLA_SUCCESS;
1552 	return QLA_ERROR;
1553 }
1554 
1555 int qla4xxx_conn_close_sess_logout(struct scsi_qla_host *ha,
1556 				   uint16_t fw_ddb_index,
1557 				   uint16_t connection_id,
1558 				   uint16_t option)
1559 {
1560 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1561 	uint32_t mbox_sts[MBOX_REG_COUNT];
1562 	int status = QLA_SUCCESS;
1563 
1564 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1565 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1566 
1567 	mbox_cmd[0] = MBOX_CMD_CONN_CLOSE_SESS_LOGOUT;
1568 	mbox_cmd[1] = fw_ddb_index;
1569 	mbox_cmd[2] = connection_id;
1570 	mbox_cmd[3] = option;
1571 
1572 	status = qla4xxx_mailbox_command(ha, 4, 2, &mbox_cmd[0], &mbox_sts[0]);
1573 	if (status != QLA_SUCCESS) {
1574 		DEBUG2(ql4_printk(KERN_WARNING, ha, "%s: MBOX_CMD_CONN_CLOSE "
1575 				  "option %04x failed w/ status %04X %04X\n",
1576 				  __func__, option, mbox_sts[0], mbox_sts[1]));
1577 	}
1578 	return status;
1579 }
1580 
1581 int qla4xxx_disable_acb(struct scsi_qla_host *ha)
1582 {
1583 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1584 	uint32_t mbox_sts[MBOX_REG_COUNT];
1585 	int status = QLA_SUCCESS;
1586 
1587 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1588 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1589 
1590 	mbox_cmd[0] = MBOX_CMD_DISABLE_ACB;
1591 
1592 	status = qla4xxx_mailbox_command(ha, 8, 5, &mbox_cmd[0], &mbox_sts[0]);
1593 	if (status != QLA_SUCCESS) {
1594 		DEBUG2(ql4_printk(KERN_WARNING, ha, "%s: MBOX_CMD_DISABLE_ACB "
1595 				  "failed w/ status %04X %04X %04X", __func__,
1596 				  mbox_sts[0], mbox_sts[1], mbox_sts[2]));
1597 	}
1598 	return status;
1599 }
1600 
1601 int qla4xxx_get_acb(struct scsi_qla_host *ha, dma_addr_t acb_dma,
1602 		    uint32_t acb_type, uint32_t len)
1603 {
1604 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1605 	uint32_t mbox_sts[MBOX_REG_COUNT];
1606 	int status = QLA_SUCCESS;
1607 
1608 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1609 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1610 
1611 	mbox_cmd[0] = MBOX_CMD_GET_ACB;
1612 	mbox_cmd[1] = acb_type;
1613 	mbox_cmd[2] = LSDW(acb_dma);
1614 	mbox_cmd[3] = MSDW(acb_dma);
1615 	mbox_cmd[4] = len;
1616 
1617 	status = qla4xxx_mailbox_command(ha, 5, 5, &mbox_cmd[0], &mbox_sts[0]);
1618 	if (status != QLA_SUCCESS) {
1619 		DEBUG2(ql4_printk(KERN_WARNING, ha, "%s: MBOX_CMD_GET_ACB "
1620 				  "failed w/ status %04X\n", __func__,
1621 				  mbox_sts[0]));
1622 	}
1623 	return status;
1624 }
1625 
1626 int qla4xxx_set_acb(struct scsi_qla_host *ha, uint32_t *mbox_cmd,
1627 		    uint32_t *mbox_sts, dma_addr_t acb_dma)
1628 {
1629 	int status = QLA_SUCCESS;
1630 
1631 	memset(mbox_cmd, 0, sizeof(mbox_cmd[0]) * MBOX_REG_COUNT);
1632 	memset(mbox_sts, 0, sizeof(mbox_sts[0]) * MBOX_REG_COUNT);
1633 	mbox_cmd[0] = MBOX_CMD_SET_ACB;
1634 	mbox_cmd[1] = 0; /* Primary ACB */
1635 	mbox_cmd[2] = LSDW(acb_dma);
1636 	mbox_cmd[3] = MSDW(acb_dma);
1637 	mbox_cmd[4] = sizeof(struct addr_ctrl_blk);
1638 
1639 	status = qla4xxx_mailbox_command(ha, 5, 5, &mbox_cmd[0], &mbox_sts[0]);
1640 	if (status != QLA_SUCCESS) {
1641 		DEBUG2(ql4_printk(KERN_WARNING, ha,  "%s: MBOX_CMD_SET_ACB "
1642 				  "failed w/ status %04X\n", __func__,
1643 				  mbox_sts[0]));
1644 	}
1645 	return status;
1646 }
1647 
1648 int qla4xxx_set_param_ddbentry(struct scsi_qla_host *ha,
1649 			       struct ddb_entry *ddb_entry,
1650 			       struct iscsi_cls_conn *cls_conn,
1651 			       uint32_t *mbx_sts)
1652 {
1653 	struct dev_db_entry *fw_ddb_entry;
1654 	struct iscsi_conn *conn;
1655 	struct iscsi_session *sess;
1656 	struct qla_conn *qla_conn;
1657 	struct sockaddr *dst_addr;
1658 	dma_addr_t fw_ddb_entry_dma;
1659 	int status = QLA_SUCCESS;
1660 	int rval = 0;
1661 	struct sockaddr_in *addr;
1662 	struct sockaddr_in6 *addr6;
1663 	char *ip;
1664 	uint16_t iscsi_opts = 0;
1665 	uint32_t options = 0;
1666 	uint16_t idx, *ptid;
1667 
1668 	fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1669 					  &fw_ddb_entry_dma, GFP_KERNEL);
1670 	if (!fw_ddb_entry) {
1671 		DEBUG2(ql4_printk(KERN_ERR, ha,
1672 				  "%s: Unable to allocate dma buffer.\n",
1673 				  __func__));
1674 		rval = -ENOMEM;
1675 		goto exit_set_param_no_free;
1676 	}
1677 
1678 	conn = cls_conn->dd_data;
1679 	qla_conn = conn->dd_data;
1680 	sess = conn->session;
1681 	dst_addr = (struct sockaddr *)&qla_conn->qla_ep->dst_addr;
1682 
1683 	if (dst_addr->sa_family == AF_INET6)
1684 		options |= IPV6_DEFAULT_DDB_ENTRY;
1685 
1686 	status = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
1687 	if (status == QLA_ERROR) {
1688 		rval = -EINVAL;
1689 		goto exit_set_param;
1690 	}
1691 
1692 	ptid = (uint16_t *)&fw_ddb_entry->isid[1];
1693 	*ptid = cpu_to_le16((uint16_t)ddb_entry->sess->target_id);
1694 
1695 	DEBUG2(ql4_printk(KERN_INFO, ha, "ISID [%02x%02x%02x%02x%02x%02x]\n",
1696 			  fw_ddb_entry->isid[5], fw_ddb_entry->isid[4],
1697 			  fw_ddb_entry->isid[3], fw_ddb_entry->isid[2],
1698 			  fw_ddb_entry->isid[1], fw_ddb_entry->isid[0]));
1699 
1700 	iscsi_opts = le16_to_cpu(fw_ddb_entry->iscsi_options);
1701 	memset(fw_ddb_entry->iscsi_alias, 0, sizeof(fw_ddb_entry->iscsi_alias));
1702 
1703 	memset(fw_ddb_entry->iscsi_name, 0, sizeof(fw_ddb_entry->iscsi_name));
1704 
1705 	if (sess->targetname != NULL) {
1706 		memcpy(fw_ddb_entry->iscsi_name, sess->targetname,
1707 		       min(strlen(sess->targetname),
1708 		       sizeof(fw_ddb_entry->iscsi_name)));
1709 	}
1710 
1711 	memset(fw_ddb_entry->ip_addr, 0, sizeof(fw_ddb_entry->ip_addr));
1712 	memset(fw_ddb_entry->tgt_addr, 0, sizeof(fw_ddb_entry->tgt_addr));
1713 
1714 	fw_ddb_entry->options =  DDB_OPT_TARGET | DDB_OPT_AUTO_SENDTGTS_DISABLE;
1715 
1716 	if (dst_addr->sa_family == AF_INET) {
1717 		addr = (struct sockaddr_in *)dst_addr;
1718 		ip = (char *)&addr->sin_addr;
1719 		memcpy(fw_ddb_entry->ip_addr, ip, IP_ADDR_LEN);
1720 		fw_ddb_entry->port = cpu_to_le16(ntohs(addr->sin_port));
1721 		DEBUG2(ql4_printk(KERN_INFO, ha,
1722 				  "%s: Destination Address [%pI4]: index [%d]\n",
1723 				   __func__, fw_ddb_entry->ip_addr,
1724 				  ddb_entry->fw_ddb_index));
1725 	} else if (dst_addr->sa_family == AF_INET6) {
1726 		addr6 = (struct sockaddr_in6 *)dst_addr;
1727 		ip = (char *)&addr6->sin6_addr;
1728 		memcpy(fw_ddb_entry->ip_addr, ip, IPv6_ADDR_LEN);
1729 		fw_ddb_entry->port = cpu_to_le16(ntohs(addr6->sin6_port));
1730 		fw_ddb_entry->options |= DDB_OPT_IPV6_DEVICE;
1731 		DEBUG2(ql4_printk(KERN_INFO, ha,
1732 				  "%s: Destination Address [%pI6]: index [%d]\n",
1733 				   __func__, fw_ddb_entry->ip_addr,
1734 				  ddb_entry->fw_ddb_index));
1735 	} else {
1736 		ql4_printk(KERN_ERR, ha,
1737 			   "%s: Failed to get IP Address\n",
1738 			   __func__);
1739 		rval = -EINVAL;
1740 		goto exit_set_param;
1741 	}
1742 
1743 	/* CHAP */
1744 	if (sess->username != NULL && sess->password != NULL) {
1745 		if (strlen(sess->username) && strlen(sess->password)) {
1746 			iscsi_opts |= BIT_7;
1747 
1748 			rval = qla4xxx_get_chap_index(ha, sess->username,
1749 						sess->password,
1750 						LOCAL_CHAP, &idx);
1751 			if (rval)
1752 				goto exit_set_param;
1753 
1754 			fw_ddb_entry->chap_tbl_idx = cpu_to_le16(idx);
1755 		}
1756 	}
1757 
1758 	if (sess->username_in != NULL && sess->password_in != NULL) {
1759 		/* Check if BIDI CHAP */
1760 		if (strlen(sess->username_in) && strlen(sess->password_in)) {
1761 			iscsi_opts |= BIT_4;
1762 
1763 			rval = qla4xxx_get_chap_index(ha, sess->username_in,
1764 						      sess->password_in,
1765 						      BIDI_CHAP, &idx);
1766 			if (rval)
1767 				goto exit_set_param;
1768 		}
1769 	}
1770 
1771 	if (sess->initial_r2t_en)
1772 		iscsi_opts |= BIT_10;
1773 
1774 	if (sess->imm_data_en)
1775 		iscsi_opts |= BIT_11;
1776 
1777 	fw_ddb_entry->iscsi_options = cpu_to_le16(iscsi_opts);
1778 
1779 	if (conn->max_recv_dlength)
1780 		fw_ddb_entry->iscsi_max_rcv_data_seg_len =
1781 		  __constant_cpu_to_le16((conn->max_recv_dlength / BYTE_UNITS));
1782 
1783 	if (sess->max_r2t)
1784 		fw_ddb_entry->iscsi_max_outsnd_r2t = cpu_to_le16(sess->max_r2t);
1785 
1786 	if (sess->first_burst)
1787 		fw_ddb_entry->iscsi_first_burst_len =
1788 		       __constant_cpu_to_le16((sess->first_burst / BYTE_UNITS));
1789 
1790 	if (sess->max_burst)
1791 		fw_ddb_entry->iscsi_max_burst_len =
1792 			__constant_cpu_to_le16((sess->max_burst / BYTE_UNITS));
1793 
1794 	if (sess->time2wait)
1795 		fw_ddb_entry->iscsi_def_time2wait =
1796 			cpu_to_le16(sess->time2wait);
1797 
1798 	if (sess->time2retain)
1799 		fw_ddb_entry->iscsi_def_time2retain =
1800 			cpu_to_le16(sess->time2retain);
1801 
1802 	status = qla4xxx_set_ddb_entry(ha, ddb_entry->fw_ddb_index,
1803 				       fw_ddb_entry_dma, mbx_sts);
1804 
1805 	if (status != QLA_SUCCESS)
1806 		rval = -EINVAL;
1807 exit_set_param:
1808 	dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1809 			  fw_ddb_entry, fw_ddb_entry_dma);
1810 exit_set_param_no_free:
1811 	return rval;
1812 }
1813 
1814 int qla4xxx_get_mgmt_data(struct scsi_qla_host *ha, uint16_t fw_ddb_index,
1815 			  uint16_t stats_size, dma_addr_t stats_dma)
1816 {
1817 	int status = QLA_SUCCESS;
1818 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1819 	uint32_t mbox_sts[MBOX_REG_COUNT];
1820 
1821 	memset(mbox_cmd, 0, sizeof(mbox_cmd[0]) * MBOX_REG_COUNT);
1822 	memset(mbox_sts, 0, sizeof(mbox_sts[0]) * MBOX_REG_COUNT);
1823 	mbox_cmd[0] = MBOX_CMD_GET_MANAGEMENT_DATA;
1824 	mbox_cmd[1] = fw_ddb_index;
1825 	mbox_cmd[2] = LSDW(stats_dma);
1826 	mbox_cmd[3] = MSDW(stats_dma);
1827 	mbox_cmd[4] = stats_size;
1828 
1829 	status = qla4xxx_mailbox_command(ha, 5, 1, &mbox_cmd[0], &mbox_sts[0]);
1830 	if (status != QLA_SUCCESS) {
1831 		DEBUG2(ql4_printk(KERN_WARNING, ha,
1832 				  "%s: MBOX_CMD_GET_MANAGEMENT_DATA "
1833 				  "failed w/ status %04X\n", __func__,
1834 				  mbox_sts[0]));
1835 	}
1836 	return status;
1837 }
1838 
1839 int qla4xxx_get_ip_state(struct scsi_qla_host *ha, uint32_t acb_idx,
1840 			 uint32_t ip_idx, uint32_t *sts)
1841 {
1842 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1843 	uint32_t mbox_sts[MBOX_REG_COUNT];
1844 	int status = QLA_SUCCESS;
1845 
1846 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1847 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1848 	mbox_cmd[0] = MBOX_CMD_GET_IP_ADDR_STATE;
1849 	mbox_cmd[1] = acb_idx;
1850 	mbox_cmd[2] = ip_idx;
1851 
1852 	status = qla4xxx_mailbox_command(ha, 3, 8, &mbox_cmd[0], &mbox_sts[0]);
1853 	if (status != QLA_SUCCESS) {
1854 		DEBUG2(ql4_printk(KERN_WARNING, ha,  "%s: "
1855 				  "MBOX_CMD_GET_IP_ADDR_STATE failed w/ "
1856 				  "status %04X\n", __func__, mbox_sts[0]));
1857 	}
1858 	memcpy(sts, mbox_sts, sizeof(mbox_sts));
1859 	return status;
1860 }
1861 
1862 int qla4xxx_get_nvram(struct scsi_qla_host *ha, dma_addr_t nvram_dma,
1863 		      uint32_t offset, uint32_t size)
1864 {
1865 	int status = QLA_SUCCESS;
1866 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1867 	uint32_t mbox_sts[MBOX_REG_COUNT];
1868 
1869 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1870 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1871 
1872 	mbox_cmd[0] = MBOX_CMD_GET_NVRAM;
1873 	mbox_cmd[1] = LSDW(nvram_dma);
1874 	mbox_cmd[2] = MSDW(nvram_dma);
1875 	mbox_cmd[3] = offset;
1876 	mbox_cmd[4] = size;
1877 
1878 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0],
1879 					 &mbox_sts[0]);
1880 	if (status != QLA_SUCCESS) {
1881 		DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
1882 				  "status %04X\n", ha->host_no, __func__,
1883 				  mbox_sts[0]));
1884 	}
1885 	return status;
1886 }
1887 
1888 int qla4xxx_set_nvram(struct scsi_qla_host *ha, dma_addr_t nvram_dma,
1889 		      uint32_t offset, uint32_t size)
1890 {
1891 	int status = QLA_SUCCESS;
1892 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1893 	uint32_t mbox_sts[MBOX_REG_COUNT];
1894 
1895 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1896 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1897 
1898 	mbox_cmd[0] = MBOX_CMD_SET_NVRAM;
1899 	mbox_cmd[1] = LSDW(nvram_dma);
1900 	mbox_cmd[2] = MSDW(nvram_dma);
1901 	mbox_cmd[3] = offset;
1902 	mbox_cmd[4] = size;
1903 
1904 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0],
1905 					 &mbox_sts[0]);
1906 	if (status != QLA_SUCCESS) {
1907 		DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
1908 				  "status %04X\n", ha->host_no, __func__,
1909 				  mbox_sts[0]));
1910 	}
1911 	return status;
1912 }
1913 
1914 int qla4xxx_restore_factory_defaults(struct scsi_qla_host *ha,
1915 				     uint32_t region, uint32_t field0,
1916 				     uint32_t field1)
1917 {
1918 	int status = QLA_SUCCESS;
1919 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1920 	uint32_t mbox_sts[MBOX_REG_COUNT];
1921 
1922 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1923 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1924 
1925 	mbox_cmd[0] = MBOX_CMD_RESTORE_FACTORY_DEFAULTS;
1926 	mbox_cmd[3] = region;
1927 	mbox_cmd[4] = field0;
1928 	mbox_cmd[5] = field1;
1929 
1930 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 3, &mbox_cmd[0],
1931 					 &mbox_sts[0]);
1932 	if (status != QLA_SUCCESS) {
1933 		DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
1934 				  "status %04X\n", ha->host_no, __func__,
1935 				  mbox_sts[0]));
1936 	}
1937 	return status;
1938 }
1939 
1940 /**
1941  * qla4_8xxx_set_param - set driver version in firmware.
1942  * @ha: Pointer to host adapter structure.
1943  * @param: Parameter to set i.e driver version
1944  **/
1945 int qla4_8xxx_set_param(struct scsi_qla_host *ha, int param)
1946 {
1947 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1948 	uint32_t mbox_sts[MBOX_REG_COUNT];
1949 	uint32_t status;
1950 
1951 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1952 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1953 
1954 	mbox_cmd[0] = MBOX_CMD_SET_PARAM;
1955 	if (param == SET_DRVR_VERSION) {
1956 		mbox_cmd[1] = SET_DRVR_VERSION;
1957 		strncpy((char *)&mbox_cmd[2], QLA4XXX_DRIVER_VERSION,
1958 			MAX_DRVR_VER_LEN);
1959 	} else {
1960 		ql4_printk(KERN_ERR, ha, "%s: invalid parameter 0x%x\n",
1961 			   __func__, param);
1962 		status = QLA_ERROR;
1963 		goto exit_set_param;
1964 	}
1965 
1966 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 2, mbox_cmd,
1967 					 mbox_sts);
1968 	if (status == QLA_ERROR)
1969 		ql4_printk(KERN_ERR, ha, "%s: failed status %04X\n",
1970 			   __func__, mbox_sts[0]);
1971 
1972 exit_set_param:
1973 	return status;
1974 }
1975 
1976 /**
1977  * qla4_83xx_post_idc_ack - post IDC ACK
1978  * @ha: Pointer to host adapter structure.
1979  *
1980  * Posts IDC ACK for IDC Request Notification AEN.
1981  **/
1982 int qla4_83xx_post_idc_ack(struct scsi_qla_host *ha)
1983 {
1984 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1985 	uint32_t mbox_sts[MBOX_REG_COUNT];
1986 	int status;
1987 
1988 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1989 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1990 
1991 	mbox_cmd[0] = MBOX_CMD_IDC_ACK;
1992 	mbox_cmd[1] = ha->idc_info.request_desc;
1993 	mbox_cmd[2] = ha->idc_info.info1;
1994 	mbox_cmd[3] = ha->idc_info.info2;
1995 	mbox_cmd[4] = ha->idc_info.info3;
1996 
1997 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, MBOX_REG_COUNT,
1998 					 mbox_cmd, mbox_sts);
1999 	if (status == QLA_ERROR)
2000 		ql4_printk(KERN_ERR, ha, "%s: failed status %04X\n", __func__,
2001 			   mbox_sts[0]);
2002 	else
2003 	       DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IDC ACK posted\n",
2004 				 __func__));
2005 
2006 	return status;
2007 }
2008