xref: /linux/drivers/scsi/qla4xxx/ql4_mbx.c (revision 3ad0876554cafa368f574d4d408468510543e9ff)
1 /*
2  * QLogic iSCSI HBA Driver
3  * Copyright (c)  2003-2013 QLogic Corporation
4  *
5  * See LICENSE.qla4xxx for copyright and licensing details.
6  */
7 
8 #include <linux/ctype.h>
9 #include "ql4_def.h"
10 #include "ql4_glbl.h"
11 #include "ql4_dbg.h"
12 #include "ql4_inline.h"
13 #include "ql4_version.h"
14 
15 void qla4xxx_queue_mbox_cmd(struct scsi_qla_host *ha, uint32_t *mbx_cmd,
16 			    int in_count)
17 {
18 	int i;
19 
20 	/* Load all mailbox registers, except mailbox 0. */
21 	for (i = 1; i < in_count; i++)
22 		writel(mbx_cmd[i], &ha->reg->mailbox[i]);
23 
24 	/* Wakeup firmware  */
25 	writel(mbx_cmd[0], &ha->reg->mailbox[0]);
26 	readl(&ha->reg->mailbox[0]);
27 	writel(set_rmask(CSR_INTR_RISC), &ha->reg->ctrl_status);
28 	readl(&ha->reg->ctrl_status);
29 }
30 
31 void qla4xxx_process_mbox_intr(struct scsi_qla_host *ha, int out_count)
32 {
33 	int intr_status;
34 
35 	intr_status = readl(&ha->reg->ctrl_status);
36 	if (intr_status & INTR_PENDING) {
37 		/*
38 		 * Service the interrupt.
39 		 * The ISR will save the mailbox status registers
40 		 * to a temporary storage location in the adapter structure.
41 		 */
42 		ha->mbox_status_count = out_count;
43 		ha->isp_ops->interrupt_service_routine(ha, intr_status);
44 	}
45 }
46 
47 /**
48  * qla4xxx_is_intr_poll_mode – Are we allowed to poll for interrupts?
49  * @ha: Pointer to host adapter structure.
50  * @ret: 1=polling mode, 0=non-polling mode
51  **/
52 static int qla4xxx_is_intr_poll_mode(struct scsi_qla_host *ha)
53 {
54 	int rval = 1;
55 
56 	if (is_qla8032(ha) || is_qla8042(ha)) {
57 		if (test_bit(AF_IRQ_ATTACHED, &ha->flags) &&
58 		    test_bit(AF_83XX_MBOX_INTR_ON, &ha->flags))
59 			rval = 0;
60 	} else {
61 		if (test_bit(AF_IRQ_ATTACHED, &ha->flags) &&
62 		    test_bit(AF_INTERRUPTS_ON, &ha->flags) &&
63 		    test_bit(AF_ONLINE, &ha->flags) &&
64 		    !test_bit(AF_HA_REMOVAL, &ha->flags))
65 			rval = 0;
66 	}
67 
68 	return rval;
69 }
70 
71 /**
72  * qla4xxx_mailbox_command - issues mailbox commands
73  * @ha: Pointer to host adapter structure.
74  * @inCount: number of mailbox registers to load.
75  * @outCount: number of mailbox registers to return.
76  * @mbx_cmd: data pointer for mailbox in registers.
77  * @mbx_sts: data pointer for mailbox out registers.
78  *
79  * This routine issue mailbox commands and waits for completion.
80  * If outCount is 0, this routine completes successfully WITHOUT waiting
81  * for the mailbox command to complete.
82  **/
83 int qla4xxx_mailbox_command(struct scsi_qla_host *ha, uint8_t inCount,
84 			    uint8_t outCount, uint32_t *mbx_cmd,
85 			    uint32_t *mbx_sts)
86 {
87 	int status = QLA_ERROR;
88 	uint8_t i;
89 	u_long wait_count;
90 	unsigned long flags = 0;
91 	uint32_t dev_state;
92 
93 	/* Make sure that pointers are valid */
94 	if (!mbx_cmd || !mbx_sts) {
95 		DEBUG2(printk("scsi%ld: %s: Invalid mbx_cmd or mbx_sts "
96 			      "pointer\n", ha->host_no, __func__));
97 		return status;
98 	}
99 
100 	if (is_qla40XX(ha)) {
101 		if (test_bit(AF_HA_REMOVAL, &ha->flags)) {
102 			DEBUG2(ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: "
103 					  "prematurely completing mbx cmd as "
104 					  "adapter removal detected\n",
105 					  ha->host_no, __func__));
106 			return status;
107 		}
108 	}
109 
110 	if ((is_aer_supported(ha)) &&
111 	    (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))) {
112 		DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Perm failure on EEH, "
113 		    "timeout MBX Exiting.\n", ha->host_no, __func__));
114 		return status;
115 	}
116 
117 	/* Mailbox code active */
118 	wait_count = MBOX_TOV * 100;
119 
120 	while (wait_count--) {
121 		mutex_lock(&ha->mbox_sem);
122 		if (!test_bit(AF_MBOX_COMMAND, &ha->flags)) {
123 			set_bit(AF_MBOX_COMMAND, &ha->flags);
124 			mutex_unlock(&ha->mbox_sem);
125 			break;
126 		}
127 		mutex_unlock(&ha->mbox_sem);
128 		if (!wait_count) {
129 			DEBUG2(printk("scsi%ld: %s: mbox_sem failed\n",
130 				ha->host_no, __func__));
131 			return status;
132 		}
133 		msleep(10);
134 	}
135 
136 	if (is_qla80XX(ha)) {
137 		if (test_bit(AF_FW_RECOVERY, &ha->flags)) {
138 			DEBUG2(ql4_printk(KERN_WARNING, ha,
139 					  "scsi%ld: %s: prematurely completing mbx cmd as firmware recovery detected\n",
140 					  ha->host_no, __func__));
141 			goto mbox_exit;
142 		}
143 		/* Do not send any mbx cmd if h/w is in failed state*/
144 		ha->isp_ops->idc_lock(ha);
145 		dev_state = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE);
146 		ha->isp_ops->idc_unlock(ha);
147 		if (dev_state == QLA8XXX_DEV_FAILED) {
148 			ql4_printk(KERN_WARNING, ha,
149 				   "scsi%ld: %s: H/W is in failed state, do not send any mailbox commands\n",
150 				   ha->host_no, __func__);
151 			goto mbox_exit;
152 		}
153 	}
154 
155 	spin_lock_irqsave(&ha->hardware_lock, flags);
156 
157 	ha->mbox_status_count = outCount;
158 	for (i = 0; i < outCount; i++)
159 		ha->mbox_status[i] = 0;
160 
161 	/* Queue the mailbox command to the firmware */
162 	ha->isp_ops->queue_mailbox_command(ha, mbx_cmd, inCount);
163 
164 	spin_unlock_irqrestore(&ha->hardware_lock, flags);
165 
166 	/* Wait for completion */
167 
168 	/*
169 	 * If we don't want status, don't wait for the mailbox command to
170 	 * complete.  For example, MBOX_CMD_RESET_FW doesn't return status,
171 	 * you must poll the inbound Interrupt Mask for completion.
172 	 */
173 	if (outCount == 0) {
174 		status = QLA_SUCCESS;
175 		goto mbox_exit;
176 	}
177 
178 	/*
179 	 * Wait for completion: Poll or completion queue
180 	 */
181 	if (qla4xxx_is_intr_poll_mode(ha)) {
182 		/* Poll for command to complete */
183 		wait_count = jiffies + MBOX_TOV * HZ;
184 		while (test_bit(AF_MBOX_COMMAND_DONE, &ha->flags) == 0) {
185 			if (time_after_eq(jiffies, wait_count))
186 				break;
187 			/*
188 			 * Service the interrupt.
189 			 * The ISR will save the mailbox status registers
190 			 * to a temporary storage location in the adapter
191 			 * structure.
192 			 */
193 			spin_lock_irqsave(&ha->hardware_lock, flags);
194 			ha->isp_ops->process_mailbox_interrupt(ha, outCount);
195 			spin_unlock_irqrestore(&ha->hardware_lock, flags);
196 			msleep(10);
197 		}
198 	} else {
199 		/* Do not poll for completion. Use completion queue */
200 		set_bit(AF_MBOX_COMMAND_NOPOLL, &ha->flags);
201 		wait_for_completion_timeout(&ha->mbx_intr_comp, MBOX_TOV * HZ);
202 		clear_bit(AF_MBOX_COMMAND_NOPOLL, &ha->flags);
203 	}
204 
205 	/* Check for mailbox timeout. */
206 	if (!test_bit(AF_MBOX_COMMAND_DONE, &ha->flags)) {
207 		if (is_qla80XX(ha) &&
208 		    test_bit(AF_FW_RECOVERY, &ha->flags)) {
209 			DEBUG2(ql4_printk(KERN_INFO, ha,
210 			    "scsi%ld: %s: prematurely completing mbx cmd as "
211 			    "firmware recovery detected\n",
212 			    ha->host_no, __func__));
213 			goto mbox_exit;
214 		}
215 		ql4_printk(KERN_WARNING, ha, "scsi%ld: Mailbox Cmd 0x%08X timed out, Scheduling Adapter Reset\n",
216 			   ha->host_no, mbx_cmd[0]);
217 		ha->mailbox_timeout_count++;
218 		mbx_sts[0] = (-1);
219 		set_bit(DPC_RESET_HA, &ha->dpc_flags);
220 		if (is_qla8022(ha)) {
221 			ql4_printk(KERN_INFO, ha,
222 				   "disabling pause transmit on port 0 & 1.\n");
223 			qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
224 					CRB_NIU_XG_PAUSE_CTL_P0 |
225 					CRB_NIU_XG_PAUSE_CTL_P1);
226 		} else if (is_qla8032(ha) || is_qla8042(ha)) {
227 			ql4_printk(KERN_INFO, ha, " %s: disabling pause transmit on port 0 & 1.\n",
228 				   __func__);
229 			qla4_83xx_disable_pause(ha);
230 		}
231 		goto mbox_exit;
232 	}
233 
234 	/*
235 	 * Copy the mailbox out registers to the caller's mailbox in/out
236 	 * structure.
237 	 */
238 	spin_lock_irqsave(&ha->hardware_lock, flags);
239 	for (i = 0; i < outCount; i++)
240 		mbx_sts[i] = ha->mbox_status[i];
241 
242 	/* Set return status and error flags (if applicable). */
243 	switch (ha->mbox_status[0]) {
244 	case MBOX_STS_COMMAND_COMPLETE:
245 		status = QLA_SUCCESS;
246 		break;
247 
248 	case MBOX_STS_INTERMEDIATE_COMPLETION:
249 		status = QLA_SUCCESS;
250 		break;
251 
252 	case MBOX_STS_BUSY:
253 		ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Cmd = %08X, ISP BUSY\n",
254 			   ha->host_no, __func__, mbx_cmd[0]);
255 		ha->mailbox_timeout_count++;
256 		break;
257 
258 	default:
259 		ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: FAILED, MBOX CMD = %08X, MBOX STS = %08X %08X %08X %08X %08X %08X %08X %08X\n",
260 			   ha->host_no, __func__, mbx_cmd[0], mbx_sts[0],
261 			   mbx_sts[1], mbx_sts[2], mbx_sts[3], mbx_sts[4],
262 			   mbx_sts[5], mbx_sts[6], mbx_sts[7]);
263 		break;
264 	}
265 	spin_unlock_irqrestore(&ha->hardware_lock, flags);
266 
267 mbox_exit:
268 	mutex_lock(&ha->mbox_sem);
269 	clear_bit(AF_MBOX_COMMAND, &ha->flags);
270 	mutex_unlock(&ha->mbox_sem);
271 	clear_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
272 
273 	return status;
274 }
275 
276 /**
277  * qla4xxx_get_minidump_template - Get the firmware template
278  * @ha: Pointer to host adapter structure.
279  * @phys_addr: dma address for template
280  *
281  * Obtain the minidump template from firmware during initialization
282  * as it may not be available when minidump is desired.
283  **/
284 int qla4xxx_get_minidump_template(struct scsi_qla_host *ha,
285 				  dma_addr_t phys_addr)
286 {
287 	uint32_t mbox_cmd[MBOX_REG_COUNT];
288 	uint32_t mbox_sts[MBOX_REG_COUNT];
289 	int status;
290 
291 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
292 	memset(&mbox_sts, 0, sizeof(mbox_sts));
293 
294 	mbox_cmd[0] = MBOX_CMD_MINIDUMP;
295 	mbox_cmd[1] = MINIDUMP_GET_TMPLT_SUBCOMMAND;
296 	mbox_cmd[2] = LSDW(phys_addr);
297 	mbox_cmd[3] = MSDW(phys_addr);
298 	mbox_cmd[4] = ha->fw_dump_tmplt_size;
299 	mbox_cmd[5] = 0;
300 
301 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 2, &mbox_cmd[0],
302 					 &mbox_sts[0]);
303 	if (status != QLA_SUCCESS) {
304 		DEBUG2(ql4_printk(KERN_INFO, ha,
305 				  "scsi%ld: %s: Cmd = %08X, mbx[0] = 0x%04x, mbx[1] = 0x%04x\n",
306 				  ha->host_no, __func__, mbox_cmd[0],
307 				  mbox_sts[0], mbox_sts[1]));
308 	}
309 	return status;
310 }
311 
312 /**
313  * qla4xxx_req_template_size - Get minidump template size from firmware.
314  * @ha: Pointer to host adapter structure.
315  **/
316 int qla4xxx_req_template_size(struct scsi_qla_host *ha)
317 {
318 	uint32_t mbox_cmd[MBOX_REG_COUNT];
319 	uint32_t mbox_sts[MBOX_REG_COUNT];
320 	int status;
321 
322 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
323 	memset(&mbox_sts, 0, sizeof(mbox_sts));
324 
325 	mbox_cmd[0] = MBOX_CMD_MINIDUMP;
326 	mbox_cmd[1] = MINIDUMP_GET_SIZE_SUBCOMMAND;
327 
328 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 8, &mbox_cmd[0],
329 					 &mbox_sts[0]);
330 	if (status == QLA_SUCCESS) {
331 		ha->fw_dump_tmplt_size = mbox_sts[1];
332 		DEBUG2(ql4_printk(KERN_INFO, ha,
333 				  "%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",
334 				  __func__, mbox_sts[0], mbox_sts[1],
335 				  mbox_sts[2], mbox_sts[3], mbox_sts[4],
336 				  mbox_sts[5], mbox_sts[6], mbox_sts[7]));
337 		if (ha->fw_dump_tmplt_size == 0)
338 			status = QLA_ERROR;
339 	} else {
340 		ql4_printk(KERN_WARNING, ha,
341 			   "%s: Error sts[0]=0x%04x, mbx[1]=0x%04x\n",
342 			   __func__, mbox_sts[0], mbox_sts[1]);
343 		status = QLA_ERROR;
344 	}
345 
346 	return status;
347 }
348 
349 void qla4xxx_mailbox_premature_completion(struct scsi_qla_host *ha)
350 {
351 	set_bit(AF_FW_RECOVERY, &ha->flags);
352 	ql4_printk(KERN_INFO, ha, "scsi%ld: %s: set FW RECOVERY!\n",
353 	    ha->host_no, __func__);
354 
355 	if (test_bit(AF_MBOX_COMMAND, &ha->flags)) {
356 		if (test_bit(AF_MBOX_COMMAND_NOPOLL, &ha->flags)) {
357 			complete(&ha->mbx_intr_comp);
358 			ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Due to fw "
359 			    "recovery, doing premature completion of "
360 			    "mbx cmd\n", ha->host_no, __func__);
361 
362 		} else {
363 			set_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
364 			ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Due to fw "
365 			    "recovery, doing premature completion of "
366 			    "polling mbx cmd\n", ha->host_no, __func__);
367 		}
368 	}
369 }
370 
371 static uint8_t
372 qla4xxx_set_ifcb(struct scsi_qla_host *ha, uint32_t *mbox_cmd,
373 		 uint32_t *mbox_sts, dma_addr_t init_fw_cb_dma)
374 {
375 	memset(mbox_cmd, 0, sizeof(mbox_cmd[0]) * MBOX_REG_COUNT);
376 	memset(mbox_sts, 0, sizeof(mbox_sts[0]) * MBOX_REG_COUNT);
377 
378 	if (is_qla8022(ha))
379 		qla4_82xx_wr_32(ha, ha->nx_db_wr_ptr, 0);
380 
381 	mbox_cmd[0] = MBOX_CMD_INITIALIZE_FIRMWARE;
382 	mbox_cmd[1] = 0;
383 	mbox_cmd[2] = LSDW(init_fw_cb_dma);
384 	mbox_cmd[3] = MSDW(init_fw_cb_dma);
385 	mbox_cmd[4] = sizeof(struct addr_ctrl_blk);
386 
387 	if (qla4xxx_mailbox_command(ha, 6, 6, mbox_cmd, mbox_sts) !=
388 	    QLA_SUCCESS) {
389 		DEBUG2(printk(KERN_WARNING "scsi%ld: %s: "
390 			      "MBOX_CMD_INITIALIZE_FIRMWARE"
391 			      " failed w/ status %04X\n",
392 			      ha->host_no, __func__, mbox_sts[0]));
393 		return QLA_ERROR;
394 	}
395 	return QLA_SUCCESS;
396 }
397 
398 uint8_t
399 qla4xxx_get_ifcb(struct scsi_qla_host *ha, uint32_t *mbox_cmd,
400 		 uint32_t *mbox_sts, dma_addr_t init_fw_cb_dma)
401 {
402 	memset(mbox_cmd, 0, sizeof(mbox_cmd[0]) * MBOX_REG_COUNT);
403 	memset(mbox_sts, 0, sizeof(mbox_sts[0]) * MBOX_REG_COUNT);
404 	mbox_cmd[0] = MBOX_CMD_GET_INIT_FW_CTRL_BLOCK;
405 	mbox_cmd[2] = LSDW(init_fw_cb_dma);
406 	mbox_cmd[3] = MSDW(init_fw_cb_dma);
407 	mbox_cmd[4] = sizeof(struct addr_ctrl_blk);
408 
409 	if (qla4xxx_mailbox_command(ha, 5, 5, mbox_cmd, mbox_sts) !=
410 	    QLA_SUCCESS) {
411 		DEBUG2(printk(KERN_WARNING "scsi%ld: %s: "
412 			      "MBOX_CMD_GET_INIT_FW_CTRL_BLOCK"
413 			      " failed w/ status %04X\n",
414 			      ha->host_no, __func__, mbox_sts[0]));
415 		return QLA_ERROR;
416 	}
417 	return QLA_SUCCESS;
418 }
419 
420 uint8_t qla4xxx_set_ipaddr_state(uint8_t fw_ipaddr_state)
421 {
422 	uint8_t ipaddr_state;
423 
424 	switch (fw_ipaddr_state) {
425 	case IP_ADDRSTATE_UNCONFIGURED:
426 		ipaddr_state = ISCSI_IPDDRESS_STATE_UNCONFIGURED;
427 		break;
428 	case IP_ADDRSTATE_INVALID:
429 		ipaddr_state = ISCSI_IPDDRESS_STATE_INVALID;
430 		break;
431 	case IP_ADDRSTATE_ACQUIRING:
432 		ipaddr_state = ISCSI_IPDDRESS_STATE_ACQUIRING;
433 		break;
434 	case IP_ADDRSTATE_TENTATIVE:
435 		ipaddr_state = ISCSI_IPDDRESS_STATE_TENTATIVE;
436 		break;
437 	case IP_ADDRSTATE_DEPRICATED:
438 		ipaddr_state = ISCSI_IPDDRESS_STATE_DEPRECATED;
439 		break;
440 	case IP_ADDRSTATE_PREFERRED:
441 		ipaddr_state = ISCSI_IPDDRESS_STATE_VALID;
442 		break;
443 	case IP_ADDRSTATE_DISABLING:
444 		ipaddr_state = ISCSI_IPDDRESS_STATE_DISABLING;
445 		break;
446 	default:
447 		ipaddr_state = ISCSI_IPDDRESS_STATE_UNCONFIGURED;
448 	}
449 	return ipaddr_state;
450 }
451 
452 static void
453 qla4xxx_update_local_ip(struct scsi_qla_host *ha,
454 			struct addr_ctrl_blk *init_fw_cb)
455 {
456 	ha->ip_config.tcp_options = le16_to_cpu(init_fw_cb->ipv4_tcp_opts);
457 	ha->ip_config.ipv4_options = le16_to_cpu(init_fw_cb->ipv4_ip_opts);
458 	ha->ip_config.ipv4_addr_state =
459 			qla4xxx_set_ipaddr_state(init_fw_cb->ipv4_addr_state);
460 	ha->ip_config.eth_mtu_size =
461 				le16_to_cpu(init_fw_cb->eth_mtu_size);
462 	ha->ip_config.ipv4_port = le16_to_cpu(init_fw_cb->ipv4_port);
463 
464 	if (ha->acb_version == ACB_SUPPORTED) {
465 		ha->ip_config.ipv6_options = le16_to_cpu(init_fw_cb->ipv6_opts);
466 		ha->ip_config.ipv6_addl_options =
467 				le16_to_cpu(init_fw_cb->ipv6_addtl_opts);
468 		ha->ip_config.ipv6_tcp_options =
469 				le16_to_cpu(init_fw_cb->ipv6_tcp_opts);
470 	}
471 
472 	/* Save IPv4 Address Info */
473 	memcpy(ha->ip_config.ip_address, init_fw_cb->ipv4_addr,
474 	       min(sizeof(ha->ip_config.ip_address),
475 		   sizeof(init_fw_cb->ipv4_addr)));
476 	memcpy(ha->ip_config.subnet_mask, init_fw_cb->ipv4_subnet,
477 	       min(sizeof(ha->ip_config.subnet_mask),
478 		   sizeof(init_fw_cb->ipv4_subnet)));
479 	memcpy(ha->ip_config.gateway, init_fw_cb->ipv4_gw_addr,
480 	       min(sizeof(ha->ip_config.gateway),
481 		   sizeof(init_fw_cb->ipv4_gw_addr)));
482 
483 	ha->ip_config.ipv4_vlan_tag = be16_to_cpu(init_fw_cb->ipv4_vlan_tag);
484 	ha->ip_config.control = init_fw_cb->control;
485 	ha->ip_config.tcp_wsf = init_fw_cb->ipv4_tcp_wsf;
486 	ha->ip_config.ipv4_tos = init_fw_cb->ipv4_tos;
487 	ha->ip_config.ipv4_cache_id = init_fw_cb->ipv4_cacheid;
488 	ha->ip_config.ipv4_alt_cid_len = init_fw_cb->ipv4_dhcp_alt_cid_len;
489 	memcpy(ha->ip_config.ipv4_alt_cid, init_fw_cb->ipv4_dhcp_alt_cid,
490 	       min(sizeof(ha->ip_config.ipv4_alt_cid),
491 		   sizeof(init_fw_cb->ipv4_dhcp_alt_cid)));
492 	ha->ip_config.ipv4_vid_len = init_fw_cb->ipv4_dhcp_vid_len;
493 	memcpy(ha->ip_config.ipv4_vid, init_fw_cb->ipv4_dhcp_vid,
494 	       min(sizeof(ha->ip_config.ipv4_vid),
495 		   sizeof(init_fw_cb->ipv4_dhcp_vid)));
496 	ha->ip_config.ipv4_ttl = init_fw_cb->ipv4_ttl;
497 	ha->ip_config.def_timeout = le16_to_cpu(init_fw_cb->def_timeout);
498 	ha->ip_config.abort_timer = init_fw_cb->abort_timer;
499 	ha->ip_config.iscsi_options = le16_to_cpu(init_fw_cb->iscsi_opts);
500 	ha->ip_config.iscsi_max_pdu_size =
501 				le16_to_cpu(init_fw_cb->iscsi_max_pdu_size);
502 	ha->ip_config.iscsi_first_burst_len =
503 				le16_to_cpu(init_fw_cb->iscsi_fburst_len);
504 	ha->ip_config.iscsi_max_outstnd_r2t =
505 				le16_to_cpu(init_fw_cb->iscsi_max_outstnd_r2t);
506 	ha->ip_config.iscsi_max_burst_len =
507 				le16_to_cpu(init_fw_cb->iscsi_max_burst_len);
508 	memcpy(ha->ip_config.iscsi_name, init_fw_cb->iscsi_name,
509 	       min(sizeof(ha->ip_config.iscsi_name),
510 		   sizeof(init_fw_cb->iscsi_name)));
511 
512 	if (is_ipv6_enabled(ha)) {
513 		/* Save IPv6 Address */
514 		ha->ip_config.ipv6_link_local_state =
515 		  qla4xxx_set_ipaddr_state(init_fw_cb->ipv6_lnk_lcl_addr_state);
516 		ha->ip_config.ipv6_addr0_state =
517 			qla4xxx_set_ipaddr_state(init_fw_cb->ipv6_addr0_state);
518 		ha->ip_config.ipv6_addr1_state =
519 			qla4xxx_set_ipaddr_state(init_fw_cb->ipv6_addr1_state);
520 
521 		switch (le16_to_cpu(init_fw_cb->ipv6_dflt_rtr_state)) {
522 		case IPV6_RTRSTATE_UNKNOWN:
523 			ha->ip_config.ipv6_default_router_state =
524 						ISCSI_ROUTER_STATE_UNKNOWN;
525 			break;
526 		case IPV6_RTRSTATE_MANUAL:
527 			ha->ip_config.ipv6_default_router_state =
528 						ISCSI_ROUTER_STATE_MANUAL;
529 			break;
530 		case IPV6_RTRSTATE_ADVERTISED:
531 			ha->ip_config.ipv6_default_router_state =
532 						ISCSI_ROUTER_STATE_ADVERTISED;
533 			break;
534 		case IPV6_RTRSTATE_STALE:
535 			ha->ip_config.ipv6_default_router_state =
536 						ISCSI_ROUTER_STATE_STALE;
537 			break;
538 		default:
539 			ha->ip_config.ipv6_default_router_state =
540 						ISCSI_ROUTER_STATE_UNKNOWN;
541 		}
542 
543 		ha->ip_config.ipv6_link_local_addr.in6_u.u6_addr8[0] = 0xFE;
544 		ha->ip_config.ipv6_link_local_addr.in6_u.u6_addr8[1] = 0x80;
545 
546 		memcpy(&ha->ip_config.ipv6_link_local_addr.in6_u.u6_addr8[8],
547 		       init_fw_cb->ipv6_if_id,
548 		       min(sizeof(ha->ip_config.ipv6_link_local_addr)/2,
549 			   sizeof(init_fw_cb->ipv6_if_id)));
550 		memcpy(&ha->ip_config.ipv6_addr0, init_fw_cb->ipv6_addr0,
551 		       min(sizeof(ha->ip_config.ipv6_addr0),
552 			   sizeof(init_fw_cb->ipv6_addr0)));
553 		memcpy(&ha->ip_config.ipv6_addr1, init_fw_cb->ipv6_addr1,
554 		       min(sizeof(ha->ip_config.ipv6_addr1),
555 			   sizeof(init_fw_cb->ipv6_addr1)));
556 		memcpy(&ha->ip_config.ipv6_default_router_addr,
557 		       init_fw_cb->ipv6_dflt_rtr_addr,
558 		       min(sizeof(ha->ip_config.ipv6_default_router_addr),
559 			   sizeof(init_fw_cb->ipv6_dflt_rtr_addr)));
560 		ha->ip_config.ipv6_vlan_tag =
561 				be16_to_cpu(init_fw_cb->ipv6_vlan_tag);
562 		ha->ip_config.ipv6_port = le16_to_cpu(init_fw_cb->ipv6_port);
563 		ha->ip_config.ipv6_cache_id = init_fw_cb->ipv6_cache_id;
564 		ha->ip_config.ipv6_flow_lbl =
565 				le16_to_cpu(init_fw_cb->ipv6_flow_lbl);
566 		ha->ip_config.ipv6_traffic_class =
567 				init_fw_cb->ipv6_traffic_class;
568 		ha->ip_config.ipv6_hop_limit = init_fw_cb->ipv6_hop_limit;
569 		ha->ip_config.ipv6_nd_reach_time =
570 				le32_to_cpu(init_fw_cb->ipv6_nd_reach_time);
571 		ha->ip_config.ipv6_nd_rexmit_timer =
572 				le32_to_cpu(init_fw_cb->ipv6_nd_rexmit_timer);
573 		ha->ip_config.ipv6_nd_stale_timeout =
574 				le32_to_cpu(init_fw_cb->ipv6_nd_stale_timeout);
575 		ha->ip_config.ipv6_dup_addr_detect_count =
576 					init_fw_cb->ipv6_dup_addr_detect_count;
577 		ha->ip_config.ipv6_gw_advrt_mtu =
578 				le32_to_cpu(init_fw_cb->ipv6_gw_advrt_mtu);
579 		ha->ip_config.ipv6_tcp_wsf = init_fw_cb->ipv6_tcp_wsf;
580 	}
581 }
582 
583 uint8_t
584 qla4xxx_update_local_ifcb(struct scsi_qla_host *ha,
585 			  uint32_t *mbox_cmd,
586 			  uint32_t *mbox_sts,
587 			  struct addr_ctrl_blk  *init_fw_cb,
588 			  dma_addr_t init_fw_cb_dma)
589 {
590 	if (qla4xxx_get_ifcb(ha, mbox_cmd, mbox_sts, init_fw_cb_dma)
591 	    != QLA_SUCCESS) {
592 		DEBUG2(printk(KERN_WARNING
593 			      "scsi%ld: %s: Failed to get init_fw_ctrl_blk\n",
594 			      ha->host_no, __func__));
595 		return QLA_ERROR;
596 	}
597 
598 	DEBUG2(qla4xxx_dump_buffer(init_fw_cb, sizeof(struct addr_ctrl_blk)));
599 
600 	/* Save some info in adapter structure. */
601 	ha->acb_version = init_fw_cb->acb_version;
602 	ha->firmware_options = le16_to_cpu(init_fw_cb->fw_options);
603 	ha->heartbeat_interval = init_fw_cb->hb_interval;
604 	memcpy(ha->name_string, init_fw_cb->iscsi_name,
605 		min(sizeof(ha->name_string),
606 		sizeof(init_fw_cb->iscsi_name)));
607 	ha->def_timeout = le16_to_cpu(init_fw_cb->def_timeout);
608 	/*memcpy(ha->alias, init_fw_cb->Alias,
609 	       min(sizeof(ha->alias), sizeof(init_fw_cb->Alias)));*/
610 
611 	qla4xxx_update_local_ip(ha, init_fw_cb);
612 
613 	return QLA_SUCCESS;
614 }
615 
616 /**
617  * qla4xxx_initialize_fw_cb - initializes firmware control block.
618  * @ha: Pointer to host adapter structure.
619  **/
620 int qla4xxx_initialize_fw_cb(struct scsi_qla_host * ha)
621 {
622 	struct addr_ctrl_blk *init_fw_cb;
623 	dma_addr_t init_fw_cb_dma;
624 	uint32_t mbox_cmd[MBOX_REG_COUNT];
625 	uint32_t mbox_sts[MBOX_REG_COUNT];
626 	int status = QLA_ERROR;
627 
628 	init_fw_cb = dma_zalloc_coherent(&ha->pdev->dev,
629 					 sizeof(struct addr_ctrl_blk),
630 					 &init_fw_cb_dma, GFP_KERNEL);
631 	if (init_fw_cb == NULL) {
632 		DEBUG2(printk("scsi%ld: %s: Unable to alloc init_cb\n",
633 			      ha->host_no, __func__));
634 		goto exit_init_fw_cb_no_free;
635 	}
636 
637 	/* Get Initialize Firmware Control Block. */
638 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
639 	memset(&mbox_sts, 0, sizeof(mbox_sts));
640 
641 	if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma) !=
642 	    QLA_SUCCESS) {
643 		dma_free_coherent(&ha->pdev->dev,
644 				  sizeof(struct addr_ctrl_blk),
645 				  init_fw_cb, init_fw_cb_dma);
646 		goto exit_init_fw_cb;
647 	}
648 
649 	/* Fill in the request and response queue information. */
650 	init_fw_cb->rqq_consumer_idx = cpu_to_le16(ha->request_out);
651 	init_fw_cb->compq_producer_idx = cpu_to_le16(ha->response_in);
652 	init_fw_cb->rqq_len = __constant_cpu_to_le16(REQUEST_QUEUE_DEPTH);
653 	init_fw_cb->compq_len = __constant_cpu_to_le16(RESPONSE_QUEUE_DEPTH);
654 	init_fw_cb->rqq_addr_lo = cpu_to_le32(LSDW(ha->request_dma));
655 	init_fw_cb->rqq_addr_hi = cpu_to_le32(MSDW(ha->request_dma));
656 	init_fw_cb->compq_addr_lo = cpu_to_le32(LSDW(ha->response_dma));
657 	init_fw_cb->compq_addr_hi = cpu_to_le32(MSDW(ha->response_dma));
658 	init_fw_cb->shdwreg_addr_lo = cpu_to_le32(LSDW(ha->shadow_regs_dma));
659 	init_fw_cb->shdwreg_addr_hi = cpu_to_le32(MSDW(ha->shadow_regs_dma));
660 
661 	/* Set up required options. */
662 	init_fw_cb->fw_options |=
663 		__constant_cpu_to_le16(FWOPT_SESSION_MODE |
664 				       FWOPT_INITIATOR_MODE);
665 
666 	if (is_qla80XX(ha))
667 		init_fw_cb->fw_options |=
668 		    __constant_cpu_to_le16(FWOPT_ENABLE_CRBDB);
669 
670 	init_fw_cb->fw_options &= __constant_cpu_to_le16(~FWOPT_TARGET_MODE);
671 
672 	init_fw_cb->add_fw_options = 0;
673 	init_fw_cb->add_fw_options |=
674 			__constant_cpu_to_le16(ADFWOPT_SERIALIZE_TASK_MGMT);
675 	init_fw_cb->add_fw_options |=
676 			__constant_cpu_to_le16(ADFWOPT_AUTOCONN_DISABLE);
677 
678 	if (qla4xxx_set_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)
679 		!= QLA_SUCCESS) {
680 		DEBUG2(printk(KERN_WARNING
681 			      "scsi%ld: %s: Failed to set init_fw_ctrl_blk\n",
682 			      ha->host_no, __func__));
683 		goto exit_init_fw_cb;
684 	}
685 
686 	if (qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0],
687 		init_fw_cb, init_fw_cb_dma) != QLA_SUCCESS) {
688 		DEBUG2(printk("scsi%ld: %s: Failed to update local ifcb\n",
689 				ha->host_no, __func__));
690 		goto exit_init_fw_cb;
691 	}
692 	status = QLA_SUCCESS;
693 
694 exit_init_fw_cb:
695 	dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
696 				init_fw_cb, init_fw_cb_dma);
697 exit_init_fw_cb_no_free:
698 	return status;
699 }
700 
701 /**
702  * qla4xxx_get_dhcp_ip_address - gets HBA ip address via DHCP
703  * @ha: Pointer to host adapter structure.
704  **/
705 int qla4xxx_get_dhcp_ip_address(struct scsi_qla_host * ha)
706 {
707 	struct addr_ctrl_blk *init_fw_cb;
708 	dma_addr_t init_fw_cb_dma;
709 	uint32_t mbox_cmd[MBOX_REG_COUNT];
710 	uint32_t mbox_sts[MBOX_REG_COUNT];
711 
712 	init_fw_cb = dma_zalloc_coherent(&ha->pdev->dev,
713 					 sizeof(struct addr_ctrl_blk),
714 					 &init_fw_cb_dma, GFP_KERNEL);
715 	if (init_fw_cb == NULL) {
716 		printk("scsi%ld: %s: Unable to alloc init_cb\n", ha->host_no,
717 		       __func__);
718 		return QLA_ERROR;
719 	}
720 
721 	/* Get Initialize Firmware Control Block. */
722 	if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma) !=
723 	    QLA_SUCCESS) {
724 		DEBUG2(printk("scsi%ld: %s: Failed to get init_fw_ctrl_blk\n",
725 			      ha->host_no, __func__));
726 		dma_free_coherent(&ha->pdev->dev,
727 				  sizeof(struct addr_ctrl_blk),
728 				  init_fw_cb, init_fw_cb_dma);
729 		return QLA_ERROR;
730 	}
731 
732 	/* Save IP Address. */
733 	qla4xxx_update_local_ip(ha, init_fw_cb);
734 	dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
735 				init_fw_cb, init_fw_cb_dma);
736 
737 	return QLA_SUCCESS;
738 }
739 
740 /**
741  * qla4xxx_get_firmware_state - gets firmware state of HBA
742  * @ha: Pointer to host adapter structure.
743  **/
744 int qla4xxx_get_firmware_state(struct scsi_qla_host * ha)
745 {
746 	uint32_t mbox_cmd[MBOX_REG_COUNT];
747 	uint32_t mbox_sts[MBOX_REG_COUNT];
748 
749 	/* Get firmware version */
750 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
751 	memset(&mbox_sts, 0, sizeof(mbox_sts));
752 
753 	mbox_cmd[0] = MBOX_CMD_GET_FW_STATE;
754 
755 	if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 4, &mbox_cmd[0], &mbox_sts[0]) !=
756 	    QLA_SUCCESS) {
757 		DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_FW_STATE failed w/ "
758 			      "status %04X\n", ha->host_no, __func__,
759 			      mbox_sts[0]));
760 		return QLA_ERROR;
761 	}
762 	ha->firmware_state = mbox_sts[1];
763 	ha->board_id = mbox_sts[2];
764 	ha->addl_fw_state = mbox_sts[3];
765 	DEBUG2(printk("scsi%ld: %s firmware_state=0x%x\n",
766 		      ha->host_no, __func__, ha->firmware_state);)
767 
768 	return QLA_SUCCESS;
769 }
770 
771 /**
772  * qla4xxx_get_firmware_status - retrieves firmware status
773  * @ha: Pointer to host adapter structure.
774  **/
775 int qla4xxx_get_firmware_status(struct scsi_qla_host * ha)
776 {
777 	uint32_t mbox_cmd[MBOX_REG_COUNT];
778 	uint32_t mbox_sts[MBOX_REG_COUNT];
779 
780 	/* Get firmware version */
781 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
782 	memset(&mbox_sts, 0, sizeof(mbox_sts));
783 
784 	mbox_cmd[0] = MBOX_CMD_GET_FW_STATUS;
785 
786 	if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 3, &mbox_cmd[0], &mbox_sts[0]) !=
787 	    QLA_SUCCESS) {
788 		DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_FW_STATUS failed w/ "
789 			      "status %04X\n", ha->host_no, __func__,
790 			      mbox_sts[0]));
791 		return QLA_ERROR;
792 	}
793 
794 	/* High-water mark of IOCBs */
795 	ha->iocb_hiwat = mbox_sts[2];
796 	DEBUG2(ql4_printk(KERN_INFO, ha,
797 			  "%s: firmware IOCBs available = %d\n", __func__,
798 			  ha->iocb_hiwat));
799 
800 	if (ha->iocb_hiwat > IOCB_HIWAT_CUSHION)
801 		ha->iocb_hiwat -= IOCB_HIWAT_CUSHION;
802 
803 	/* Ideally, we should not enter this code, as the # of firmware
804 	 * IOCBs is hard-coded in the firmware. We set a default
805 	 * iocb_hiwat here just in case */
806 	if (ha->iocb_hiwat == 0) {
807 		ha->iocb_hiwat = REQUEST_QUEUE_DEPTH / 4;
808 		DEBUG2(ql4_printk(KERN_WARNING, ha,
809 				  "%s: Setting IOCB's to = %d\n", __func__,
810 				  ha->iocb_hiwat));
811 	}
812 
813 	return QLA_SUCCESS;
814 }
815 
816 /**
817  * qla4xxx_get_fwddb_entry - retrieves firmware ddb entry
818  * @ha: Pointer to host adapter structure.
819  * @fw_ddb_index: Firmware's device database index
820  * @fw_ddb_entry: Pointer to firmware's device database entry structure
821  * @num_valid_ddb_entries: Pointer to number of valid ddb entries
822  * @next_ddb_index: Pointer to next valid device database index
823  * @fw_ddb_device_state: Pointer to device state
824  **/
825 int qla4xxx_get_fwddb_entry(struct scsi_qla_host *ha,
826 			    uint16_t fw_ddb_index,
827 			    struct dev_db_entry *fw_ddb_entry,
828 			    dma_addr_t fw_ddb_entry_dma,
829 			    uint32_t *num_valid_ddb_entries,
830 			    uint32_t *next_ddb_index,
831 			    uint32_t *fw_ddb_device_state,
832 			    uint32_t *conn_err_detail,
833 			    uint16_t *tcp_source_port_num,
834 			    uint16_t *connection_id)
835 {
836 	int status = QLA_ERROR;
837 	uint16_t options;
838 	uint32_t mbox_cmd[MBOX_REG_COUNT];
839 	uint32_t mbox_sts[MBOX_REG_COUNT];
840 
841 	/* Make sure the device index is valid */
842 	if (fw_ddb_index >= MAX_DDB_ENTRIES) {
843 		DEBUG2(printk("scsi%ld: %s: ddb [%d] out of range.\n",
844 			      ha->host_no, __func__, fw_ddb_index));
845 		goto exit_get_fwddb;
846 	}
847 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
848 	memset(&mbox_sts, 0, sizeof(mbox_sts));
849 	if (fw_ddb_entry)
850 		memset(fw_ddb_entry, 0, sizeof(struct dev_db_entry));
851 
852 	mbox_cmd[0] = MBOX_CMD_GET_DATABASE_ENTRY;
853 	mbox_cmd[1] = (uint32_t) fw_ddb_index;
854 	mbox_cmd[2] = LSDW(fw_ddb_entry_dma);
855 	mbox_cmd[3] = MSDW(fw_ddb_entry_dma);
856 	mbox_cmd[4] = sizeof(struct dev_db_entry);
857 
858 	if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 7, &mbox_cmd[0], &mbox_sts[0]) ==
859 	    QLA_ERROR) {
860 		DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_DATABASE_ENTRY failed"
861 			      " with status 0x%04X\n", ha->host_no, __func__,
862 			      mbox_sts[0]));
863 		goto exit_get_fwddb;
864 	}
865 	if (fw_ddb_index != mbox_sts[1]) {
866 		DEBUG2(printk("scsi%ld: %s: ddb mismatch [%d] != [%d].\n",
867 			      ha->host_no, __func__, fw_ddb_index,
868 			      mbox_sts[1]));
869 		goto exit_get_fwddb;
870 	}
871 	if (fw_ddb_entry) {
872 		options = le16_to_cpu(fw_ddb_entry->options);
873 		if (options & DDB_OPT_IPV6_DEVICE) {
874 			ql4_printk(KERN_INFO, ha, "%s: DDB[%d] MB0 %04x Tot %d "
875 				"Next %d State %04x ConnErr %08x %pI6 "
876 				":%04d \"%s\"\n", __func__, fw_ddb_index,
877 				mbox_sts[0], mbox_sts[2], mbox_sts[3],
878 				mbox_sts[4], mbox_sts[5],
879 				fw_ddb_entry->ip_addr,
880 				le16_to_cpu(fw_ddb_entry->port),
881 				fw_ddb_entry->iscsi_name);
882 		} else {
883 			ql4_printk(KERN_INFO, ha, "%s: DDB[%d] MB0 %04x Tot %d "
884 				"Next %d State %04x ConnErr %08x %pI4 "
885 				":%04d \"%s\"\n", __func__, fw_ddb_index,
886 				mbox_sts[0], mbox_sts[2], mbox_sts[3],
887 				mbox_sts[4], mbox_sts[5],
888 				fw_ddb_entry->ip_addr,
889 				le16_to_cpu(fw_ddb_entry->port),
890 				fw_ddb_entry->iscsi_name);
891 		}
892 	}
893 	if (num_valid_ddb_entries)
894 		*num_valid_ddb_entries = mbox_sts[2];
895 	if (next_ddb_index)
896 		*next_ddb_index = mbox_sts[3];
897 	if (fw_ddb_device_state)
898 		*fw_ddb_device_state = mbox_sts[4];
899 
900 	/*
901 	 * RA: This mailbox has been changed to pass connection error and
902 	 * details.  Its true for ISP4010 as per Version E - Not sure when it
903 	 * was changed.	 Get the time2wait from the fw_dd_entry field :
904 	 * default_time2wait which we call it as minTime2Wait DEV_DB_ENTRY
905 	 * struct.
906 	 */
907 	if (conn_err_detail)
908 		*conn_err_detail = mbox_sts[5];
909 	if (tcp_source_port_num)
910 		*tcp_source_port_num = (uint16_t) (mbox_sts[6] >> 16);
911 	if (connection_id)
912 		*connection_id = (uint16_t) mbox_sts[6] & 0x00FF;
913 	status = QLA_SUCCESS;
914 
915 exit_get_fwddb:
916 	return status;
917 }
918 
919 int qla4xxx_conn_open(struct scsi_qla_host *ha, uint16_t fw_ddb_index)
920 {
921 	uint32_t mbox_cmd[MBOX_REG_COUNT];
922 	uint32_t mbox_sts[MBOX_REG_COUNT];
923 	int status;
924 
925 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
926 	memset(&mbox_sts, 0, sizeof(mbox_sts));
927 
928 	mbox_cmd[0] = MBOX_CMD_CONN_OPEN;
929 	mbox_cmd[1] = fw_ddb_index;
930 
931 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 2, &mbox_cmd[0],
932 					 &mbox_sts[0]);
933 	DEBUG2(ql4_printk(KERN_INFO, ha,
934 			  "%s: status = %d mbx0 = 0x%x mbx1 = 0x%x\n",
935 			  __func__, status, mbox_sts[0], mbox_sts[1]));
936 	return status;
937 }
938 
939 /**
940  * qla4xxx_set_fwddb_entry - sets a ddb entry.
941  * @ha: Pointer to host adapter structure.
942  * @fw_ddb_index: Firmware's device database index
943  * @fw_ddb_entry_dma: dma address of ddb entry
944  * @mbx_sts: mailbox 0 to be returned or NULL
945  *
946  * This routine initializes or updates the adapter's device database
947  * entry for the specified device.
948  **/
949 int qla4xxx_set_ddb_entry(struct scsi_qla_host * ha, uint16_t fw_ddb_index,
950 			  dma_addr_t fw_ddb_entry_dma, uint32_t *mbx_sts)
951 {
952 	uint32_t mbox_cmd[MBOX_REG_COUNT];
953 	uint32_t mbox_sts[MBOX_REG_COUNT];
954 	int status;
955 
956 	/* Do not wait for completion. The firmware will send us an
957 	 * ASTS_DATABASE_CHANGED (0x8014) to notify us of the login status.
958 	 */
959 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
960 	memset(&mbox_sts, 0, sizeof(mbox_sts));
961 
962 	mbox_cmd[0] = MBOX_CMD_SET_DATABASE_ENTRY;
963 	mbox_cmd[1] = (uint32_t) fw_ddb_index;
964 	mbox_cmd[2] = LSDW(fw_ddb_entry_dma);
965 	mbox_cmd[3] = MSDW(fw_ddb_entry_dma);
966 	mbox_cmd[4] = sizeof(struct dev_db_entry);
967 
968 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0],
969 					 &mbox_sts[0]);
970 	if (mbx_sts)
971 		*mbx_sts = mbox_sts[0];
972 	DEBUG2(printk("scsi%ld: %s: status=%d mbx0=0x%x mbx4=0x%x\n",
973 	    ha->host_no, __func__, status, mbox_sts[0], mbox_sts[4]);)
974 
975 	return status;
976 }
977 
978 int qla4xxx_session_logout_ddb(struct scsi_qla_host *ha,
979 			       struct ddb_entry *ddb_entry, int options)
980 {
981 	int status;
982 	uint32_t mbox_cmd[MBOX_REG_COUNT];
983 	uint32_t mbox_sts[MBOX_REG_COUNT];
984 
985 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
986 	memset(&mbox_sts, 0, sizeof(mbox_sts));
987 
988 	mbox_cmd[0] = MBOX_CMD_CONN_CLOSE_SESS_LOGOUT;
989 	mbox_cmd[1] = ddb_entry->fw_ddb_index;
990 	mbox_cmd[3] = options;
991 
992 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 2, &mbox_cmd[0],
993 					 &mbox_sts[0]);
994 	if (status != QLA_SUCCESS) {
995 		DEBUG2(ql4_printk(KERN_INFO, ha,
996 				  "%s: MBOX_CMD_CONN_CLOSE_SESS_LOGOUT "
997 				  "failed sts %04X %04X", __func__,
998 				  mbox_sts[0], mbox_sts[1]));
999 		if ((mbox_sts[0] == MBOX_STS_COMMAND_ERROR) &&
1000 		    (mbox_sts[1] == DDB_NOT_LOGGED_IN)) {
1001 			set_bit(DDB_CONN_CLOSE_FAILURE, &ddb_entry->flags);
1002 		}
1003 	}
1004 
1005 	return status;
1006 }
1007 
1008 /**
1009  * qla4xxx_get_crash_record - retrieves crash record.
1010  * @ha: Pointer to host adapter structure.
1011  *
1012  * This routine retrieves a crash record from the QLA4010 after an 8002h aen.
1013  **/
1014 void qla4xxx_get_crash_record(struct scsi_qla_host * ha)
1015 {
1016 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1017 	uint32_t mbox_sts[MBOX_REG_COUNT];
1018 	struct crash_record *crash_record = NULL;
1019 	dma_addr_t crash_record_dma = 0;
1020 	uint32_t crash_record_size = 0;
1021 
1022 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1023 	memset(&mbox_sts, 0, sizeof(mbox_cmd));
1024 
1025 	/* Get size of crash record. */
1026 	mbox_cmd[0] = MBOX_CMD_GET_CRASH_RECORD;
1027 
1028 	if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
1029 	    QLA_SUCCESS) {
1030 		DEBUG2(printk("scsi%ld: %s: ERROR: Unable to retrieve size!\n",
1031 			      ha->host_no, __func__));
1032 		goto exit_get_crash_record;
1033 	}
1034 	crash_record_size = mbox_sts[4];
1035 	if (crash_record_size == 0) {
1036 		DEBUG2(printk("scsi%ld: %s: ERROR: Crash record size is 0!\n",
1037 			      ha->host_no, __func__));
1038 		goto exit_get_crash_record;
1039 	}
1040 
1041 	/* Alloc Memory for Crash Record. */
1042 	crash_record = dma_alloc_coherent(&ha->pdev->dev, crash_record_size,
1043 					  &crash_record_dma, GFP_KERNEL);
1044 	if (crash_record == NULL)
1045 		goto exit_get_crash_record;
1046 
1047 	/* Get Crash Record. */
1048 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1049 	memset(&mbox_sts, 0, sizeof(mbox_cmd));
1050 
1051 	mbox_cmd[0] = MBOX_CMD_GET_CRASH_RECORD;
1052 	mbox_cmd[2] = LSDW(crash_record_dma);
1053 	mbox_cmd[3] = MSDW(crash_record_dma);
1054 	mbox_cmd[4] = crash_record_size;
1055 
1056 	if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
1057 	    QLA_SUCCESS)
1058 		goto exit_get_crash_record;
1059 
1060 	/* Dump Crash Record. */
1061 
1062 exit_get_crash_record:
1063 	if (crash_record)
1064 		dma_free_coherent(&ha->pdev->dev, crash_record_size,
1065 				  crash_record, crash_record_dma);
1066 }
1067 
1068 /**
1069  * qla4xxx_get_conn_event_log - retrieves connection event log
1070  * @ha: Pointer to host adapter structure.
1071  **/
1072 void qla4xxx_get_conn_event_log(struct scsi_qla_host * ha)
1073 {
1074 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1075 	uint32_t mbox_sts[MBOX_REG_COUNT];
1076 	struct conn_event_log_entry *event_log = NULL;
1077 	dma_addr_t event_log_dma = 0;
1078 	uint32_t event_log_size = 0;
1079 	uint32_t num_valid_entries;
1080 	uint32_t      oldest_entry = 0;
1081 	uint32_t	max_event_log_entries;
1082 	uint8_t		i;
1083 
1084 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1085 	memset(&mbox_sts, 0, sizeof(mbox_cmd));
1086 
1087 	/* Get size of crash record. */
1088 	mbox_cmd[0] = MBOX_CMD_GET_CONN_EVENT_LOG;
1089 
1090 	if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
1091 	    QLA_SUCCESS)
1092 		goto exit_get_event_log;
1093 
1094 	event_log_size = mbox_sts[4];
1095 	if (event_log_size == 0)
1096 		goto exit_get_event_log;
1097 
1098 	/* Alloc Memory for Crash Record. */
1099 	event_log = dma_alloc_coherent(&ha->pdev->dev, event_log_size,
1100 				       &event_log_dma, GFP_KERNEL);
1101 	if (event_log == NULL)
1102 		goto exit_get_event_log;
1103 
1104 	/* Get Crash Record. */
1105 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1106 	memset(&mbox_sts, 0, sizeof(mbox_cmd));
1107 
1108 	mbox_cmd[0] = MBOX_CMD_GET_CONN_EVENT_LOG;
1109 	mbox_cmd[2] = LSDW(event_log_dma);
1110 	mbox_cmd[3] = MSDW(event_log_dma);
1111 
1112 	if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
1113 	    QLA_SUCCESS) {
1114 		DEBUG2(printk("scsi%ld: %s: ERROR: Unable to retrieve event "
1115 			      "log!\n", ha->host_no, __func__));
1116 		goto exit_get_event_log;
1117 	}
1118 
1119 	/* Dump Event Log. */
1120 	num_valid_entries = mbox_sts[1];
1121 
1122 	max_event_log_entries = event_log_size /
1123 		sizeof(struct conn_event_log_entry);
1124 
1125 	if (num_valid_entries > max_event_log_entries)
1126 		oldest_entry = num_valid_entries % max_event_log_entries;
1127 
1128 	DEBUG3(printk("scsi%ld: Connection Event Log Dump (%d entries):\n",
1129 		      ha->host_no, num_valid_entries));
1130 
1131 	if (ql4xextended_error_logging == 3) {
1132 		if (oldest_entry == 0) {
1133 			/* Circular Buffer has not wrapped around */
1134 			for (i=0; i < num_valid_entries; i++) {
1135 				qla4xxx_dump_buffer((uint8_t *)event_log+
1136 						    (i*sizeof(*event_log)),
1137 						    sizeof(*event_log));
1138 			}
1139 		}
1140 		else {
1141 			/* Circular Buffer has wrapped around -
1142 			 * display accordingly*/
1143 			for (i=oldest_entry; i < max_event_log_entries; i++) {
1144 				qla4xxx_dump_buffer((uint8_t *)event_log+
1145 						    (i*sizeof(*event_log)),
1146 						    sizeof(*event_log));
1147 			}
1148 			for (i=0; i < oldest_entry; i++) {
1149 				qla4xxx_dump_buffer((uint8_t *)event_log+
1150 						    (i*sizeof(*event_log)),
1151 						    sizeof(*event_log));
1152 			}
1153 		}
1154 	}
1155 
1156 exit_get_event_log:
1157 	if (event_log)
1158 		dma_free_coherent(&ha->pdev->dev, event_log_size, event_log,
1159 				  event_log_dma);
1160 }
1161 
1162 /**
1163  * qla4xxx_abort_task - issues Abort Task
1164  * @ha: Pointer to host adapter structure.
1165  * @srb: Pointer to srb entry
1166  *
1167  * This routine performs a LUN RESET on the specified target/lun.
1168  * The caller must ensure that the ddb_entry and lun_entry pointers
1169  * are valid before calling this routine.
1170  **/
1171 int qla4xxx_abort_task(struct scsi_qla_host *ha, struct srb *srb)
1172 {
1173 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1174 	uint32_t mbox_sts[MBOX_REG_COUNT];
1175 	struct scsi_cmnd *cmd = srb->cmd;
1176 	int status = QLA_SUCCESS;
1177 	unsigned long flags = 0;
1178 	uint32_t index;
1179 
1180 	/*
1181 	 * Send abort task command to ISP, so that the ISP will return
1182 	 * request with ABORT status
1183 	 */
1184 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1185 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1186 
1187 	spin_lock_irqsave(&ha->hardware_lock, flags);
1188 	index = (unsigned long)(unsigned char *)cmd->host_scribble;
1189 	spin_unlock_irqrestore(&ha->hardware_lock, flags);
1190 
1191 	/* Firmware already posted completion on response queue */
1192 	if (index == MAX_SRBS)
1193 		return status;
1194 
1195 	mbox_cmd[0] = MBOX_CMD_ABORT_TASK;
1196 	mbox_cmd[1] = srb->ddb->fw_ddb_index;
1197 	mbox_cmd[2] = index;
1198 	/* Immediate Command Enable */
1199 	mbox_cmd[5] = 0x01;
1200 
1201 	qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0],
1202 	    &mbox_sts[0]);
1203 	if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE) {
1204 		status = QLA_ERROR;
1205 
1206 		DEBUG2(printk(KERN_WARNING "scsi%ld:%d:%llu: abort task FAILED: "
1207 		    "mbx0=%04X, mb1=%04X, mb2=%04X, mb3=%04X, mb4=%04X\n",
1208 		    ha->host_no, cmd->device->id, cmd->device->lun, mbox_sts[0],
1209 		    mbox_sts[1], mbox_sts[2], mbox_sts[3], mbox_sts[4]));
1210 	}
1211 
1212 	return status;
1213 }
1214 
1215 /**
1216  * qla4xxx_reset_lun - issues LUN Reset
1217  * @ha: Pointer to host adapter structure.
1218  * @ddb_entry: Pointer to device database entry
1219  * @lun: lun number
1220  *
1221  * This routine performs a LUN RESET on the specified target/lun.
1222  * The caller must ensure that the ddb_entry and lun_entry pointers
1223  * are valid before calling this routine.
1224  **/
1225 int qla4xxx_reset_lun(struct scsi_qla_host * ha, struct ddb_entry * ddb_entry,
1226 		      uint64_t lun)
1227 {
1228 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1229 	uint32_t mbox_sts[MBOX_REG_COUNT];
1230 	uint32_t scsi_lun[2];
1231 	int status = QLA_SUCCESS;
1232 
1233 	DEBUG2(printk("scsi%ld:%d:%llu: lun reset issued\n", ha->host_no,
1234 		      ddb_entry->fw_ddb_index, lun));
1235 
1236 	/*
1237 	 * Send lun reset command to ISP, so that the ISP will return all
1238 	 * outstanding requests with RESET status
1239 	 */
1240 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1241 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1242 	int_to_scsilun(lun, (struct scsi_lun *) scsi_lun);
1243 
1244 	mbox_cmd[0] = MBOX_CMD_LUN_RESET;
1245 	mbox_cmd[1] = ddb_entry->fw_ddb_index;
1246 	/* FW expects LUN bytes 0-3 in Incoming Mailbox 2
1247 	 * (LUN byte 0 is LSByte, byte 3 is MSByte) */
1248 	mbox_cmd[2] = cpu_to_le32(scsi_lun[0]);
1249 	/* FW expects LUN bytes 4-7 in Incoming Mailbox 3
1250 	 * (LUN byte 4 is LSByte, byte 7 is MSByte) */
1251 	mbox_cmd[3] = cpu_to_le32(scsi_lun[1]);
1252 	mbox_cmd[5] = 0x01;	/* Immediate Command Enable */
1253 
1254 	qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0], &mbox_sts[0]);
1255 	if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE &&
1256 	    mbox_sts[0] != MBOX_STS_COMMAND_ERROR)
1257 		status = QLA_ERROR;
1258 
1259 	return status;
1260 }
1261 
1262 /**
1263  * qla4xxx_reset_target - issues target Reset
1264  * @ha: Pointer to host adapter structure.
1265  * @db_entry: Pointer to device database entry
1266  * @un_entry: Pointer to lun entry structure
1267  *
1268  * This routine performs a TARGET RESET on the specified target.
1269  * The caller must ensure that the ddb_entry pointers
1270  * are valid before calling this routine.
1271  **/
1272 int qla4xxx_reset_target(struct scsi_qla_host *ha,
1273 			 struct ddb_entry *ddb_entry)
1274 {
1275 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1276 	uint32_t mbox_sts[MBOX_REG_COUNT];
1277 	int status = QLA_SUCCESS;
1278 
1279 	DEBUG2(printk("scsi%ld:%d: target reset issued\n", ha->host_no,
1280 		      ddb_entry->fw_ddb_index));
1281 
1282 	/*
1283 	 * Send target reset command to ISP, so that the ISP will return all
1284 	 * outstanding requests with RESET status
1285 	 */
1286 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1287 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1288 
1289 	mbox_cmd[0] = MBOX_CMD_TARGET_WARM_RESET;
1290 	mbox_cmd[1] = ddb_entry->fw_ddb_index;
1291 	mbox_cmd[5] = 0x01;	/* Immediate Command Enable */
1292 
1293 	qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0],
1294 				&mbox_sts[0]);
1295 	if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE &&
1296 	    mbox_sts[0] != MBOX_STS_COMMAND_ERROR)
1297 		status = QLA_ERROR;
1298 
1299 	return status;
1300 }
1301 
1302 int qla4xxx_get_flash(struct scsi_qla_host * ha, dma_addr_t dma_addr,
1303 		      uint32_t offset, uint32_t len)
1304 {
1305 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1306 	uint32_t mbox_sts[MBOX_REG_COUNT];
1307 
1308 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1309 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1310 
1311 	mbox_cmd[0] = MBOX_CMD_READ_FLASH;
1312 	mbox_cmd[1] = LSDW(dma_addr);
1313 	mbox_cmd[2] = MSDW(dma_addr);
1314 	mbox_cmd[3] = offset;
1315 	mbox_cmd[4] = len;
1316 
1317 	if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 2, &mbox_cmd[0], &mbox_sts[0]) !=
1318 	    QLA_SUCCESS) {
1319 		DEBUG2(printk("scsi%ld: %s: MBOX_CMD_READ_FLASH, failed w/ "
1320 		    "status %04X %04X, offset %08x, len %08x\n", ha->host_no,
1321 		    __func__, mbox_sts[0], mbox_sts[1], offset, len));
1322 		return QLA_ERROR;
1323 	}
1324 	return QLA_SUCCESS;
1325 }
1326 
1327 /**
1328  * qla4xxx_about_firmware - gets FW, iscsi draft and boot loader version
1329  * @ha: Pointer to host adapter structure.
1330  *
1331  * Retrieves the FW version, iSCSI draft version & bootloader version of HBA.
1332  * Mailboxes 2 & 3 may hold an address for data. Make sure that we write 0 to
1333  * those mailboxes, if unused.
1334  **/
1335 int qla4xxx_about_firmware(struct scsi_qla_host *ha)
1336 {
1337 	struct about_fw_info *about_fw = NULL;
1338 	dma_addr_t about_fw_dma;
1339 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1340 	uint32_t mbox_sts[MBOX_REG_COUNT];
1341 	int status = QLA_ERROR;
1342 
1343 	about_fw = dma_zalloc_coherent(&ha->pdev->dev,
1344 				       sizeof(struct about_fw_info),
1345 				       &about_fw_dma, GFP_KERNEL);
1346 	if (!about_fw) {
1347 		DEBUG2(ql4_printk(KERN_ERR, ha, "%s: Unable to alloc memory "
1348 				  "for about_fw\n", __func__));
1349 		return status;
1350 	}
1351 
1352 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1353 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1354 
1355 	mbox_cmd[0] = MBOX_CMD_ABOUT_FW;
1356 	mbox_cmd[2] = LSDW(about_fw_dma);
1357 	mbox_cmd[3] = MSDW(about_fw_dma);
1358 	mbox_cmd[4] = sizeof(struct about_fw_info);
1359 
1360 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, MBOX_REG_COUNT,
1361 					 &mbox_cmd[0], &mbox_sts[0]);
1362 	if (status != QLA_SUCCESS) {
1363 		DEBUG2(ql4_printk(KERN_WARNING, ha, "%s: MBOX_CMD_ABOUT_FW "
1364 				  "failed w/ status %04X\n", __func__,
1365 				  mbox_sts[0]));
1366 		goto exit_about_fw;
1367 	}
1368 
1369 	/* Save version information. */
1370 	ha->fw_info.fw_major = le16_to_cpu(about_fw->fw_major);
1371 	ha->fw_info.fw_minor = le16_to_cpu(about_fw->fw_minor);
1372 	ha->fw_info.fw_patch = le16_to_cpu(about_fw->fw_patch);
1373 	ha->fw_info.fw_build = le16_to_cpu(about_fw->fw_build);
1374 	memcpy(ha->fw_info.fw_build_date, about_fw->fw_build_date,
1375 	       sizeof(about_fw->fw_build_date));
1376 	memcpy(ha->fw_info.fw_build_time, about_fw->fw_build_time,
1377 	       sizeof(about_fw->fw_build_time));
1378 	strcpy((char *)ha->fw_info.fw_build_user,
1379 	       skip_spaces((char *)about_fw->fw_build_user));
1380 	ha->fw_info.fw_load_source = le16_to_cpu(about_fw->fw_load_source);
1381 	ha->fw_info.iscsi_major = le16_to_cpu(about_fw->iscsi_major);
1382 	ha->fw_info.iscsi_minor = le16_to_cpu(about_fw->iscsi_minor);
1383 	ha->fw_info.bootload_major = le16_to_cpu(about_fw->bootload_major);
1384 	ha->fw_info.bootload_minor = le16_to_cpu(about_fw->bootload_minor);
1385 	ha->fw_info.bootload_patch = le16_to_cpu(about_fw->bootload_patch);
1386 	ha->fw_info.bootload_build = le16_to_cpu(about_fw->bootload_build);
1387 	strcpy((char *)ha->fw_info.extended_timestamp,
1388 	       skip_spaces((char *)about_fw->extended_timestamp));
1389 
1390 	ha->fw_uptime_secs = le32_to_cpu(mbox_sts[5]);
1391 	ha->fw_uptime_msecs = le32_to_cpu(mbox_sts[6]);
1392 	status = QLA_SUCCESS;
1393 
1394 exit_about_fw:
1395 	dma_free_coherent(&ha->pdev->dev, sizeof(struct about_fw_info),
1396 			  about_fw, about_fw_dma);
1397 	return status;
1398 }
1399 
1400 int qla4xxx_get_default_ddb(struct scsi_qla_host *ha, uint32_t options,
1401 			    dma_addr_t dma_addr)
1402 {
1403 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1404 	uint32_t mbox_sts[MBOX_REG_COUNT];
1405 
1406 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1407 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1408 
1409 	mbox_cmd[0] = MBOX_CMD_GET_DATABASE_ENTRY_DEFAULTS;
1410 	mbox_cmd[1] = options;
1411 	mbox_cmd[2] = LSDW(dma_addr);
1412 	mbox_cmd[3] = MSDW(dma_addr);
1413 
1414 	if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0], &mbox_sts[0]) !=
1415 	    QLA_SUCCESS) {
1416 		DEBUG2(printk("scsi%ld: %s: failed status %04X\n",
1417 		     ha->host_no, __func__, mbox_sts[0]));
1418 		return QLA_ERROR;
1419 	}
1420 	return QLA_SUCCESS;
1421 }
1422 
1423 int qla4xxx_req_ddb_entry(struct scsi_qla_host *ha, uint32_t ddb_index,
1424 			  uint32_t *mbx_sts)
1425 {
1426 	int status;
1427 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1428 	uint32_t mbox_sts[MBOX_REG_COUNT];
1429 
1430 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1431 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1432 
1433 	mbox_cmd[0] = MBOX_CMD_REQUEST_DATABASE_ENTRY;
1434 	mbox_cmd[1] = ddb_index;
1435 
1436 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0],
1437 					 &mbox_sts[0]);
1438 	if (status != QLA_SUCCESS) {
1439 		DEBUG2(ql4_printk(KERN_ERR, ha, "%s: failed status %04X\n",
1440 				   __func__, mbox_sts[0]));
1441 	}
1442 
1443 	*mbx_sts = mbox_sts[0];
1444 	return status;
1445 }
1446 
1447 int qla4xxx_clear_ddb_entry(struct scsi_qla_host *ha, uint32_t ddb_index)
1448 {
1449 	int status;
1450 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1451 	uint32_t mbox_sts[MBOX_REG_COUNT];
1452 
1453 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1454 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1455 
1456 	mbox_cmd[0] = MBOX_CMD_CLEAR_DATABASE_ENTRY;
1457 	mbox_cmd[1] = ddb_index;
1458 
1459 	status = qla4xxx_mailbox_command(ha, 2, 1, &mbox_cmd[0],
1460 					 &mbox_sts[0]);
1461 	if (status != QLA_SUCCESS) {
1462 		DEBUG2(ql4_printk(KERN_ERR, ha, "%s: failed status %04X\n",
1463 				   __func__, mbox_sts[0]));
1464 	}
1465 
1466 	return status;
1467 }
1468 
1469 int qla4xxx_set_flash(struct scsi_qla_host *ha, dma_addr_t dma_addr,
1470 		      uint32_t offset, uint32_t length, uint32_t options)
1471 {
1472 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1473 	uint32_t mbox_sts[MBOX_REG_COUNT];
1474 	int status = QLA_SUCCESS;
1475 
1476 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1477 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1478 
1479 	mbox_cmd[0] = MBOX_CMD_WRITE_FLASH;
1480 	mbox_cmd[1] = LSDW(dma_addr);
1481 	mbox_cmd[2] = MSDW(dma_addr);
1482 	mbox_cmd[3] = offset;
1483 	mbox_cmd[4] = length;
1484 	mbox_cmd[5] = options;
1485 
1486 	status = qla4xxx_mailbox_command(ha, 6, 2, &mbox_cmd[0], &mbox_sts[0]);
1487 	if (status != QLA_SUCCESS) {
1488 		DEBUG2(ql4_printk(KERN_WARNING, ha, "%s: MBOX_CMD_WRITE_FLASH "
1489 				  "failed w/ status %04X, mbx1 %04X\n",
1490 				  __func__, mbox_sts[0], mbox_sts[1]));
1491 	}
1492 	return status;
1493 }
1494 
1495 int qla4xxx_bootdb_by_index(struct scsi_qla_host *ha,
1496 			    struct dev_db_entry *fw_ddb_entry,
1497 			    dma_addr_t fw_ddb_entry_dma, uint16_t ddb_index)
1498 {
1499 	uint32_t dev_db_start_offset = FLASH_OFFSET_DB_INFO;
1500 	uint32_t dev_db_end_offset;
1501 	int status = QLA_ERROR;
1502 
1503 	memset(fw_ddb_entry, 0, sizeof(*fw_ddb_entry));
1504 
1505 	dev_db_start_offset += (ddb_index * sizeof(*fw_ddb_entry));
1506 	dev_db_end_offset = FLASH_OFFSET_DB_END;
1507 
1508 	if (dev_db_start_offset > dev_db_end_offset) {
1509 		DEBUG2(ql4_printk(KERN_ERR, ha,
1510 				  "%s:Invalid DDB index %d", __func__,
1511 				  ddb_index));
1512 		goto exit_bootdb_failed;
1513 	}
1514 
1515 	if (qla4xxx_get_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
1516 			      sizeof(*fw_ddb_entry)) != QLA_SUCCESS) {
1517 		ql4_printk(KERN_ERR, ha, "scsi%ld: %s: Get Flash"
1518 			   "failed\n", ha->host_no, __func__);
1519 		goto exit_bootdb_failed;
1520 	}
1521 
1522 	if (fw_ddb_entry->cookie == DDB_VALID_COOKIE)
1523 		status = QLA_SUCCESS;
1524 
1525 exit_bootdb_failed:
1526 	return status;
1527 }
1528 
1529 int qla4xxx_flashdb_by_index(struct scsi_qla_host *ha,
1530 			     struct dev_db_entry *fw_ddb_entry,
1531 			     dma_addr_t fw_ddb_entry_dma, uint16_t ddb_index)
1532 {
1533 	uint32_t dev_db_start_offset;
1534 	uint32_t dev_db_end_offset;
1535 	int status = QLA_ERROR;
1536 
1537 	memset(fw_ddb_entry, 0, sizeof(*fw_ddb_entry));
1538 
1539 	if (is_qla40XX(ha)) {
1540 		dev_db_start_offset = FLASH_OFFSET_DB_INFO;
1541 		dev_db_end_offset = FLASH_OFFSET_DB_END;
1542 	} else {
1543 		dev_db_start_offset = FLASH_RAW_ACCESS_ADDR +
1544 				      (ha->hw.flt_region_ddb << 2);
1545 		/* flt_ddb_size is DDB table size for both ports
1546 		 * so divide it by 2 to calculate the offset for second port
1547 		 */
1548 		if (ha->port_num == 1)
1549 			dev_db_start_offset += (ha->hw.flt_ddb_size / 2);
1550 
1551 		dev_db_end_offset = dev_db_start_offset +
1552 				    (ha->hw.flt_ddb_size / 2);
1553 	}
1554 
1555 	dev_db_start_offset += (ddb_index * sizeof(*fw_ddb_entry));
1556 
1557 	if (dev_db_start_offset > dev_db_end_offset) {
1558 		DEBUG2(ql4_printk(KERN_ERR, ha,
1559 				  "%s:Invalid DDB index %d", __func__,
1560 				  ddb_index));
1561 		goto exit_fdb_failed;
1562 	}
1563 
1564 	if (qla4xxx_get_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
1565 			      sizeof(*fw_ddb_entry)) != QLA_SUCCESS) {
1566 		ql4_printk(KERN_ERR, ha, "scsi%ld: %s: Get Flash failed\n",
1567 			   ha->host_no, __func__);
1568 		goto exit_fdb_failed;
1569 	}
1570 
1571 	if (fw_ddb_entry->cookie == DDB_VALID_COOKIE)
1572 		status = QLA_SUCCESS;
1573 
1574 exit_fdb_failed:
1575 	return status;
1576 }
1577 
1578 int qla4xxx_get_chap(struct scsi_qla_host *ha, char *username, char *password,
1579 		     uint16_t idx)
1580 {
1581 	int ret = 0;
1582 	int rval = QLA_ERROR;
1583 	uint32_t offset = 0, chap_size;
1584 	struct ql4_chap_table *chap_table;
1585 	dma_addr_t chap_dma;
1586 
1587 	chap_table = dma_pool_zalloc(ha->chap_dma_pool, GFP_KERNEL, &chap_dma);
1588 	if (chap_table == NULL)
1589 		return -ENOMEM;
1590 
1591 	chap_size = sizeof(struct ql4_chap_table);
1592 
1593 	if (is_qla40XX(ha))
1594 		offset = FLASH_CHAP_OFFSET | (idx * chap_size);
1595 	else {
1596 		offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
1597 		/* flt_chap_size is CHAP table size for both ports
1598 		 * so divide it by 2 to calculate the offset for second port
1599 		 */
1600 		if (ha->port_num == 1)
1601 			offset += (ha->hw.flt_chap_size / 2);
1602 		offset += (idx * chap_size);
1603 	}
1604 
1605 	rval = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
1606 	if (rval != QLA_SUCCESS) {
1607 		ret = -EINVAL;
1608 		goto exit_get_chap;
1609 	}
1610 
1611 	DEBUG2(ql4_printk(KERN_INFO, ha, "Chap Cookie: x%x\n",
1612 		__le16_to_cpu(chap_table->cookie)));
1613 
1614 	if (__le16_to_cpu(chap_table->cookie) != CHAP_VALID_COOKIE) {
1615 		ql4_printk(KERN_ERR, ha, "No valid chap entry found\n");
1616 		goto exit_get_chap;
1617 	}
1618 
1619 	strlcpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
1620 	strlcpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
1621 	chap_table->cookie = __constant_cpu_to_le16(CHAP_VALID_COOKIE);
1622 
1623 exit_get_chap:
1624 	dma_pool_free(ha->chap_dma_pool, chap_table, chap_dma);
1625 	return ret;
1626 }
1627 
1628 /**
1629  * qla4xxx_set_chap - Make a chap entry at the given index
1630  * @ha: pointer to adapter structure
1631  * @username: CHAP username to set
1632  * @password: CHAP password to set
1633  * @idx: CHAP index at which to make the entry
1634  * @bidi: type of chap entry (chap_in or chap_out)
1635  *
1636  * Create chap entry at the given index with the information provided.
1637  *
1638  * Note: Caller should acquire the chap lock before getting here.
1639  **/
1640 int qla4xxx_set_chap(struct scsi_qla_host *ha, char *username, char *password,
1641 		     uint16_t idx, int bidi)
1642 {
1643 	int ret = 0;
1644 	int rval = QLA_ERROR;
1645 	uint32_t offset = 0;
1646 	struct ql4_chap_table *chap_table;
1647 	uint32_t chap_size = 0;
1648 	dma_addr_t chap_dma;
1649 
1650 	chap_table = dma_pool_zalloc(ha->chap_dma_pool, GFP_KERNEL, &chap_dma);
1651 	if (chap_table == NULL) {
1652 		ret =  -ENOMEM;
1653 		goto exit_set_chap;
1654 	}
1655 
1656 	if (bidi)
1657 		chap_table->flags |= BIT_6; /* peer */
1658 	else
1659 		chap_table->flags |= BIT_7; /* local */
1660 	chap_table->secret_len = strlen(password);
1661 	strncpy(chap_table->secret, password, MAX_CHAP_SECRET_LEN - 1);
1662 	strncpy(chap_table->name, username, MAX_CHAP_NAME_LEN - 1);
1663 	chap_table->cookie = __constant_cpu_to_le16(CHAP_VALID_COOKIE);
1664 
1665 	if (is_qla40XX(ha)) {
1666 		chap_size = MAX_CHAP_ENTRIES_40XX * sizeof(*chap_table);
1667 		offset = FLASH_CHAP_OFFSET;
1668 	} else { /* Single region contains CHAP info for both ports which is
1669 		  * divided into half for each port.
1670 		  */
1671 		chap_size = ha->hw.flt_chap_size / 2;
1672 		offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
1673 		if (ha->port_num == 1)
1674 			offset += chap_size;
1675 	}
1676 
1677 	offset += (idx * sizeof(struct ql4_chap_table));
1678 	rval = qla4xxx_set_flash(ha, chap_dma, offset,
1679 				sizeof(struct ql4_chap_table),
1680 				FLASH_OPT_RMW_COMMIT);
1681 
1682 	if (rval == QLA_SUCCESS && ha->chap_list) {
1683 		/* Update ha chap_list cache */
1684 		memcpy((struct ql4_chap_table *)ha->chap_list + idx,
1685 		       chap_table, sizeof(struct ql4_chap_table));
1686 	}
1687 	dma_pool_free(ha->chap_dma_pool, chap_table, chap_dma);
1688 	if (rval != QLA_SUCCESS)
1689 		ret =  -EINVAL;
1690 
1691 exit_set_chap:
1692 	return ret;
1693 }
1694 
1695 
1696 int qla4xxx_get_uni_chap_at_index(struct scsi_qla_host *ha, char *username,
1697 				  char *password, uint16_t chap_index)
1698 {
1699 	int rval = QLA_ERROR;
1700 	struct ql4_chap_table *chap_table = NULL;
1701 	int max_chap_entries;
1702 
1703 	if (!ha->chap_list) {
1704 		ql4_printk(KERN_ERR, ha, "Do not have CHAP table cache\n");
1705 		rval = QLA_ERROR;
1706 		goto exit_uni_chap;
1707 	}
1708 
1709 	if (!username || !password) {
1710 		ql4_printk(KERN_ERR, ha, "No memory for username & secret\n");
1711 		rval = QLA_ERROR;
1712 		goto exit_uni_chap;
1713 	}
1714 
1715 	if (is_qla80XX(ha))
1716 		max_chap_entries = (ha->hw.flt_chap_size / 2) /
1717 				   sizeof(struct ql4_chap_table);
1718 	else
1719 		max_chap_entries = MAX_CHAP_ENTRIES_40XX;
1720 
1721 	if (chap_index > max_chap_entries) {
1722 		ql4_printk(KERN_ERR, ha, "Invalid Chap index\n");
1723 		rval = QLA_ERROR;
1724 		goto exit_uni_chap;
1725 	}
1726 
1727 	mutex_lock(&ha->chap_sem);
1728 	chap_table = (struct ql4_chap_table *)ha->chap_list + chap_index;
1729 	if (chap_table->cookie != __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
1730 		rval = QLA_ERROR;
1731 		goto exit_unlock_uni_chap;
1732 	}
1733 
1734 	if (!(chap_table->flags & BIT_7)) {
1735 		ql4_printk(KERN_ERR, ha, "Unidirectional entry not set\n");
1736 		rval = QLA_ERROR;
1737 		goto exit_unlock_uni_chap;
1738 	}
1739 
1740 	strlcpy(password, chap_table->secret, MAX_CHAP_SECRET_LEN);
1741 	strlcpy(username, chap_table->name, MAX_CHAP_NAME_LEN);
1742 
1743 	rval = QLA_SUCCESS;
1744 
1745 exit_unlock_uni_chap:
1746 	mutex_unlock(&ha->chap_sem);
1747 exit_uni_chap:
1748 	return rval;
1749 }
1750 
1751 /**
1752  * qla4xxx_get_chap_index - Get chap index given username and secret
1753  * @ha: pointer to adapter structure
1754  * @username: CHAP username to be searched
1755  * @password: CHAP password to be searched
1756  * @bidi: Is this a BIDI CHAP
1757  * @chap_index: CHAP index to be returned
1758  *
1759  * Match the username and password in the chap_list, return the index if a
1760  * match is found. If a match is not found then add the entry in FLASH and
1761  * return the index at which entry is written in the FLASH.
1762  **/
1763 int qla4xxx_get_chap_index(struct scsi_qla_host *ha, char *username,
1764 			   char *password, int bidi, uint16_t *chap_index)
1765 {
1766 	int i, rval;
1767 	int free_index = -1;
1768 	int found_index = 0;
1769 	int max_chap_entries = 0;
1770 	struct ql4_chap_table *chap_table;
1771 
1772 	if (is_qla80XX(ha))
1773 		max_chap_entries = (ha->hw.flt_chap_size / 2) /
1774 						sizeof(struct ql4_chap_table);
1775 	else
1776 		max_chap_entries = MAX_CHAP_ENTRIES_40XX;
1777 
1778 	if (!ha->chap_list) {
1779 		ql4_printk(KERN_ERR, ha, "Do not have CHAP table cache\n");
1780 		return QLA_ERROR;
1781 	}
1782 
1783 	if (!username || !password) {
1784 		ql4_printk(KERN_ERR, ha, "Do not have username and psw\n");
1785 		return QLA_ERROR;
1786 	}
1787 
1788 	mutex_lock(&ha->chap_sem);
1789 	for (i = 0; i < max_chap_entries; i++) {
1790 		chap_table = (struct ql4_chap_table *)ha->chap_list + i;
1791 		if (chap_table->cookie !=
1792 		    __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
1793 			if (i > MAX_RESRV_CHAP_IDX && free_index == -1)
1794 				free_index = i;
1795 			continue;
1796 		}
1797 		if (bidi) {
1798 			if (chap_table->flags & BIT_7)
1799 				continue;
1800 		} else {
1801 			if (chap_table->flags & BIT_6)
1802 				continue;
1803 		}
1804 		if (!strncmp(chap_table->secret, password,
1805 			     MAX_CHAP_SECRET_LEN) &&
1806 		    !strncmp(chap_table->name, username,
1807 			     MAX_CHAP_NAME_LEN)) {
1808 			*chap_index = i;
1809 			found_index = 1;
1810 			break;
1811 		}
1812 	}
1813 
1814 	/* If chap entry is not present and a free index is available then
1815 	 * write the entry in flash
1816 	 */
1817 	if (!found_index && free_index != -1) {
1818 		rval = qla4xxx_set_chap(ha, username, password,
1819 					free_index, bidi);
1820 		if (!rval) {
1821 			*chap_index = free_index;
1822 			found_index = 1;
1823 		}
1824 	}
1825 
1826 	mutex_unlock(&ha->chap_sem);
1827 
1828 	if (found_index)
1829 		return QLA_SUCCESS;
1830 	return QLA_ERROR;
1831 }
1832 
1833 int qla4xxx_conn_close_sess_logout(struct scsi_qla_host *ha,
1834 				   uint16_t fw_ddb_index,
1835 				   uint16_t connection_id,
1836 				   uint16_t option)
1837 {
1838 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1839 	uint32_t mbox_sts[MBOX_REG_COUNT];
1840 	int status = QLA_SUCCESS;
1841 
1842 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1843 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1844 
1845 	mbox_cmd[0] = MBOX_CMD_CONN_CLOSE_SESS_LOGOUT;
1846 	mbox_cmd[1] = fw_ddb_index;
1847 	mbox_cmd[2] = connection_id;
1848 	mbox_cmd[3] = option;
1849 
1850 	status = qla4xxx_mailbox_command(ha, 4, 2, &mbox_cmd[0], &mbox_sts[0]);
1851 	if (status != QLA_SUCCESS) {
1852 		DEBUG2(ql4_printk(KERN_WARNING, ha, "%s: MBOX_CMD_CONN_CLOSE "
1853 				  "option %04x failed w/ status %04X %04X\n",
1854 				  __func__, option, mbox_sts[0], mbox_sts[1]));
1855 	}
1856 	return status;
1857 }
1858 
1859 /**
1860  * qla4_84xx_extend_idc_tmo - Extend IDC Timeout.
1861  * @ha: Pointer to host adapter structure.
1862  * @ext_tmo: idc timeout value
1863  *
1864  * Requests firmware to extend the idc timeout value.
1865  **/
1866 static int qla4_84xx_extend_idc_tmo(struct scsi_qla_host *ha, uint32_t ext_tmo)
1867 {
1868 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1869 	uint32_t mbox_sts[MBOX_REG_COUNT];
1870 	int status;
1871 
1872 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1873 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1874 	ext_tmo &= 0xf;
1875 
1876 	mbox_cmd[0] = MBOX_CMD_IDC_TIME_EXTEND;
1877 	mbox_cmd[1] = ((ha->idc_info.request_desc & 0xfffff0ff) |
1878 		       (ext_tmo << 8));		/* new timeout */
1879 	mbox_cmd[2] = ha->idc_info.info1;
1880 	mbox_cmd[3] = ha->idc_info.info2;
1881 	mbox_cmd[4] = ha->idc_info.info3;
1882 
1883 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, MBOX_REG_COUNT,
1884 					 mbox_cmd, mbox_sts);
1885 	if (status != QLA_SUCCESS) {
1886 		DEBUG2(ql4_printk(KERN_INFO, ha,
1887 				  "scsi%ld: %s: failed status %04X\n",
1888 				  ha->host_no, __func__, mbox_sts[0]));
1889 		return QLA_ERROR;
1890 	} else {
1891 		ql4_printk(KERN_INFO, ha, "%s: IDC timeout extended by %d secs\n",
1892 			   __func__, ext_tmo);
1893 	}
1894 
1895 	return QLA_SUCCESS;
1896 }
1897 
1898 int qla4xxx_disable_acb(struct scsi_qla_host *ha)
1899 {
1900 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1901 	uint32_t mbox_sts[MBOX_REG_COUNT];
1902 	int status = QLA_SUCCESS;
1903 
1904 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1905 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1906 
1907 	mbox_cmd[0] = MBOX_CMD_DISABLE_ACB;
1908 
1909 	status = qla4xxx_mailbox_command(ha, 8, 5, &mbox_cmd[0], &mbox_sts[0]);
1910 	if (status != QLA_SUCCESS) {
1911 		DEBUG2(ql4_printk(KERN_WARNING, ha, "%s: MBOX_CMD_DISABLE_ACB "
1912 				  "failed w/ status %04X %04X %04X", __func__,
1913 				  mbox_sts[0], mbox_sts[1], mbox_sts[2]));
1914 	} else {
1915 		if (is_qla8042(ha) &&
1916 		    test_bit(DPC_POST_IDC_ACK, &ha->dpc_flags) &&
1917 		    (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE)) {
1918 			/*
1919 			 * Disable ACB mailbox command takes time to complete
1920 			 * based on the total number of targets connected.
1921 			 * For 512 targets, it took approximately 5 secs to
1922 			 * complete. Setting the timeout value to 8, with the 3
1923 			 * secs buffer.
1924 			 */
1925 			qla4_84xx_extend_idc_tmo(ha, IDC_EXTEND_TOV);
1926 			if (!wait_for_completion_timeout(&ha->disable_acb_comp,
1927 							 IDC_EXTEND_TOV * HZ)) {
1928 				ql4_printk(KERN_WARNING, ha, "%s: Disable ACB Completion not received\n",
1929 					   __func__);
1930 			}
1931 		}
1932 	}
1933 	return status;
1934 }
1935 
1936 int qla4xxx_get_acb(struct scsi_qla_host *ha, dma_addr_t acb_dma,
1937 		    uint32_t acb_type, uint32_t len)
1938 {
1939 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1940 	uint32_t mbox_sts[MBOX_REG_COUNT];
1941 	int status = QLA_SUCCESS;
1942 
1943 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1944 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1945 
1946 	mbox_cmd[0] = MBOX_CMD_GET_ACB;
1947 	mbox_cmd[1] = acb_type;
1948 	mbox_cmd[2] = LSDW(acb_dma);
1949 	mbox_cmd[3] = MSDW(acb_dma);
1950 	mbox_cmd[4] = len;
1951 
1952 	status = qla4xxx_mailbox_command(ha, 5, 5, &mbox_cmd[0], &mbox_sts[0]);
1953 	if (status != QLA_SUCCESS) {
1954 		DEBUG2(ql4_printk(KERN_WARNING, ha, "%s: MBOX_CMD_GET_ACB "
1955 				  "failed w/ status %04X\n", __func__,
1956 				  mbox_sts[0]));
1957 	}
1958 	return status;
1959 }
1960 
1961 int qla4xxx_set_acb(struct scsi_qla_host *ha, uint32_t *mbox_cmd,
1962 		    uint32_t *mbox_sts, dma_addr_t acb_dma)
1963 {
1964 	int status = QLA_SUCCESS;
1965 
1966 	memset(mbox_cmd, 0, sizeof(mbox_cmd[0]) * MBOX_REG_COUNT);
1967 	memset(mbox_sts, 0, sizeof(mbox_sts[0]) * MBOX_REG_COUNT);
1968 	mbox_cmd[0] = MBOX_CMD_SET_ACB;
1969 	mbox_cmd[1] = 0; /* Primary ACB */
1970 	mbox_cmd[2] = LSDW(acb_dma);
1971 	mbox_cmd[3] = MSDW(acb_dma);
1972 	mbox_cmd[4] = sizeof(struct addr_ctrl_blk);
1973 
1974 	status = qla4xxx_mailbox_command(ha, 5, 5, &mbox_cmd[0], &mbox_sts[0]);
1975 	if (status != QLA_SUCCESS) {
1976 		DEBUG2(ql4_printk(KERN_WARNING, ha,  "%s: MBOX_CMD_SET_ACB "
1977 				  "failed w/ status %04X\n", __func__,
1978 				  mbox_sts[0]));
1979 	}
1980 	return status;
1981 }
1982 
1983 int qla4xxx_set_param_ddbentry(struct scsi_qla_host *ha,
1984 			       struct ddb_entry *ddb_entry,
1985 			       struct iscsi_cls_conn *cls_conn,
1986 			       uint32_t *mbx_sts)
1987 {
1988 	struct dev_db_entry *fw_ddb_entry;
1989 	struct iscsi_conn *conn;
1990 	struct iscsi_session *sess;
1991 	struct qla_conn *qla_conn;
1992 	struct sockaddr *dst_addr;
1993 	dma_addr_t fw_ddb_entry_dma;
1994 	int status = QLA_SUCCESS;
1995 	int rval = 0;
1996 	struct sockaddr_in *addr;
1997 	struct sockaddr_in6 *addr6;
1998 	char *ip;
1999 	uint16_t iscsi_opts = 0;
2000 	uint32_t options = 0;
2001 	uint16_t idx, *ptid;
2002 
2003 	fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2004 					  &fw_ddb_entry_dma, GFP_KERNEL);
2005 	if (!fw_ddb_entry) {
2006 		DEBUG2(ql4_printk(KERN_ERR, ha,
2007 				  "%s: Unable to allocate dma buffer.\n",
2008 				  __func__));
2009 		rval = -ENOMEM;
2010 		goto exit_set_param_no_free;
2011 	}
2012 
2013 	conn = cls_conn->dd_data;
2014 	qla_conn = conn->dd_data;
2015 	sess = conn->session;
2016 	dst_addr = (struct sockaddr *)&qla_conn->qla_ep->dst_addr;
2017 
2018 	if (dst_addr->sa_family == AF_INET6)
2019 		options |= IPV6_DEFAULT_DDB_ENTRY;
2020 
2021 	status = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
2022 	if (status == QLA_ERROR) {
2023 		rval = -EINVAL;
2024 		goto exit_set_param;
2025 	}
2026 
2027 	ptid = (uint16_t *)&fw_ddb_entry->isid[1];
2028 	*ptid = cpu_to_le16((uint16_t)ddb_entry->sess->target_id);
2029 
2030 	DEBUG2(ql4_printk(KERN_INFO, ha, "ISID [%pmR]\n", fw_ddb_entry->isid));
2031 
2032 	iscsi_opts = le16_to_cpu(fw_ddb_entry->iscsi_options);
2033 	memset(fw_ddb_entry->iscsi_alias, 0, sizeof(fw_ddb_entry->iscsi_alias));
2034 
2035 	memset(fw_ddb_entry->iscsi_name, 0, sizeof(fw_ddb_entry->iscsi_name));
2036 
2037 	if (sess->targetname != NULL) {
2038 		memcpy(fw_ddb_entry->iscsi_name, sess->targetname,
2039 		       min(strlen(sess->targetname),
2040 		       sizeof(fw_ddb_entry->iscsi_name)));
2041 	}
2042 
2043 	memset(fw_ddb_entry->ip_addr, 0, sizeof(fw_ddb_entry->ip_addr));
2044 	memset(fw_ddb_entry->tgt_addr, 0, sizeof(fw_ddb_entry->tgt_addr));
2045 
2046 	fw_ddb_entry->options =  DDB_OPT_TARGET | DDB_OPT_AUTO_SENDTGTS_DISABLE;
2047 
2048 	if (dst_addr->sa_family == AF_INET) {
2049 		addr = (struct sockaddr_in *)dst_addr;
2050 		ip = (char *)&addr->sin_addr;
2051 		memcpy(fw_ddb_entry->ip_addr, ip, IP_ADDR_LEN);
2052 		fw_ddb_entry->port = cpu_to_le16(ntohs(addr->sin_port));
2053 		DEBUG2(ql4_printk(KERN_INFO, ha,
2054 				  "%s: Destination Address [%pI4]: index [%d]\n",
2055 				   __func__, fw_ddb_entry->ip_addr,
2056 				  ddb_entry->fw_ddb_index));
2057 	} else if (dst_addr->sa_family == AF_INET6) {
2058 		addr6 = (struct sockaddr_in6 *)dst_addr;
2059 		ip = (char *)&addr6->sin6_addr;
2060 		memcpy(fw_ddb_entry->ip_addr, ip, IPv6_ADDR_LEN);
2061 		fw_ddb_entry->port = cpu_to_le16(ntohs(addr6->sin6_port));
2062 		fw_ddb_entry->options |= DDB_OPT_IPV6_DEVICE;
2063 		DEBUG2(ql4_printk(KERN_INFO, ha,
2064 				  "%s: Destination Address [%pI6]: index [%d]\n",
2065 				   __func__, fw_ddb_entry->ip_addr,
2066 				  ddb_entry->fw_ddb_index));
2067 	} else {
2068 		ql4_printk(KERN_ERR, ha,
2069 			   "%s: Failed to get IP Address\n",
2070 			   __func__);
2071 		rval = -EINVAL;
2072 		goto exit_set_param;
2073 	}
2074 
2075 	/* CHAP */
2076 	if (sess->username != NULL && sess->password != NULL) {
2077 		if (strlen(sess->username) && strlen(sess->password)) {
2078 			iscsi_opts |= BIT_7;
2079 
2080 			rval = qla4xxx_get_chap_index(ha, sess->username,
2081 						sess->password,
2082 						LOCAL_CHAP, &idx);
2083 			if (rval)
2084 				goto exit_set_param;
2085 
2086 			fw_ddb_entry->chap_tbl_idx = cpu_to_le16(idx);
2087 		}
2088 	}
2089 
2090 	if (sess->username_in != NULL && sess->password_in != NULL) {
2091 		/* Check if BIDI CHAP */
2092 		if (strlen(sess->username_in) && strlen(sess->password_in)) {
2093 			iscsi_opts |= BIT_4;
2094 
2095 			rval = qla4xxx_get_chap_index(ha, sess->username_in,
2096 						      sess->password_in,
2097 						      BIDI_CHAP, &idx);
2098 			if (rval)
2099 				goto exit_set_param;
2100 		}
2101 	}
2102 
2103 	if (sess->initial_r2t_en)
2104 		iscsi_opts |= BIT_10;
2105 
2106 	if (sess->imm_data_en)
2107 		iscsi_opts |= BIT_11;
2108 
2109 	fw_ddb_entry->iscsi_options = cpu_to_le16(iscsi_opts);
2110 
2111 	if (conn->max_recv_dlength)
2112 		fw_ddb_entry->iscsi_max_rcv_data_seg_len =
2113 		  __constant_cpu_to_le16((conn->max_recv_dlength / BYTE_UNITS));
2114 
2115 	if (sess->max_r2t)
2116 		fw_ddb_entry->iscsi_max_outsnd_r2t = cpu_to_le16(sess->max_r2t);
2117 
2118 	if (sess->first_burst)
2119 		fw_ddb_entry->iscsi_first_burst_len =
2120 		       __constant_cpu_to_le16((sess->first_burst / BYTE_UNITS));
2121 
2122 	if (sess->max_burst)
2123 		fw_ddb_entry->iscsi_max_burst_len =
2124 			__constant_cpu_to_le16((sess->max_burst / BYTE_UNITS));
2125 
2126 	if (sess->time2wait)
2127 		fw_ddb_entry->iscsi_def_time2wait =
2128 			cpu_to_le16(sess->time2wait);
2129 
2130 	if (sess->time2retain)
2131 		fw_ddb_entry->iscsi_def_time2retain =
2132 			cpu_to_le16(sess->time2retain);
2133 
2134 	status = qla4xxx_set_ddb_entry(ha, ddb_entry->fw_ddb_index,
2135 				       fw_ddb_entry_dma, mbx_sts);
2136 
2137 	if (status != QLA_SUCCESS)
2138 		rval = -EINVAL;
2139 exit_set_param:
2140 	dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2141 			  fw_ddb_entry, fw_ddb_entry_dma);
2142 exit_set_param_no_free:
2143 	return rval;
2144 }
2145 
2146 int qla4xxx_get_mgmt_data(struct scsi_qla_host *ha, uint16_t fw_ddb_index,
2147 			  uint16_t stats_size, dma_addr_t stats_dma)
2148 {
2149 	int status = QLA_SUCCESS;
2150 	uint32_t mbox_cmd[MBOX_REG_COUNT];
2151 	uint32_t mbox_sts[MBOX_REG_COUNT];
2152 
2153 	memset(mbox_cmd, 0, sizeof(mbox_cmd[0]) * MBOX_REG_COUNT);
2154 	memset(mbox_sts, 0, sizeof(mbox_sts[0]) * MBOX_REG_COUNT);
2155 	mbox_cmd[0] = MBOX_CMD_GET_MANAGEMENT_DATA;
2156 	mbox_cmd[1] = fw_ddb_index;
2157 	mbox_cmd[2] = LSDW(stats_dma);
2158 	mbox_cmd[3] = MSDW(stats_dma);
2159 	mbox_cmd[4] = stats_size;
2160 
2161 	status = qla4xxx_mailbox_command(ha, 5, 1, &mbox_cmd[0], &mbox_sts[0]);
2162 	if (status != QLA_SUCCESS) {
2163 		DEBUG2(ql4_printk(KERN_WARNING, ha,
2164 				  "%s: MBOX_CMD_GET_MANAGEMENT_DATA "
2165 				  "failed w/ status %04X\n", __func__,
2166 				  mbox_sts[0]));
2167 	}
2168 	return status;
2169 }
2170 
2171 int qla4xxx_get_ip_state(struct scsi_qla_host *ha, uint32_t acb_idx,
2172 			 uint32_t ip_idx, uint32_t *sts)
2173 {
2174 	uint32_t mbox_cmd[MBOX_REG_COUNT];
2175 	uint32_t mbox_sts[MBOX_REG_COUNT];
2176 	int status = QLA_SUCCESS;
2177 
2178 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
2179 	memset(&mbox_sts, 0, sizeof(mbox_sts));
2180 	mbox_cmd[0] = MBOX_CMD_GET_IP_ADDR_STATE;
2181 	mbox_cmd[1] = acb_idx;
2182 	mbox_cmd[2] = ip_idx;
2183 
2184 	status = qla4xxx_mailbox_command(ha, 3, 8, &mbox_cmd[0], &mbox_sts[0]);
2185 	if (status != QLA_SUCCESS) {
2186 		DEBUG2(ql4_printk(KERN_WARNING, ha,  "%s: "
2187 				  "MBOX_CMD_GET_IP_ADDR_STATE failed w/ "
2188 				  "status %04X\n", __func__, mbox_sts[0]));
2189 	}
2190 	memcpy(sts, mbox_sts, sizeof(mbox_sts));
2191 	return status;
2192 }
2193 
2194 int qla4xxx_get_nvram(struct scsi_qla_host *ha, dma_addr_t nvram_dma,
2195 		      uint32_t offset, uint32_t size)
2196 {
2197 	int status = QLA_SUCCESS;
2198 	uint32_t mbox_cmd[MBOX_REG_COUNT];
2199 	uint32_t mbox_sts[MBOX_REG_COUNT];
2200 
2201 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
2202 	memset(&mbox_sts, 0, sizeof(mbox_sts));
2203 
2204 	mbox_cmd[0] = MBOX_CMD_GET_NVRAM;
2205 	mbox_cmd[1] = LSDW(nvram_dma);
2206 	mbox_cmd[2] = MSDW(nvram_dma);
2207 	mbox_cmd[3] = offset;
2208 	mbox_cmd[4] = size;
2209 
2210 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0],
2211 					 &mbox_sts[0]);
2212 	if (status != QLA_SUCCESS) {
2213 		DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
2214 				  "status %04X\n", ha->host_no, __func__,
2215 				  mbox_sts[0]));
2216 	}
2217 	return status;
2218 }
2219 
2220 int qla4xxx_set_nvram(struct scsi_qla_host *ha, dma_addr_t nvram_dma,
2221 		      uint32_t offset, uint32_t size)
2222 {
2223 	int status = QLA_SUCCESS;
2224 	uint32_t mbox_cmd[MBOX_REG_COUNT];
2225 	uint32_t mbox_sts[MBOX_REG_COUNT];
2226 
2227 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
2228 	memset(&mbox_sts, 0, sizeof(mbox_sts));
2229 
2230 	mbox_cmd[0] = MBOX_CMD_SET_NVRAM;
2231 	mbox_cmd[1] = LSDW(nvram_dma);
2232 	mbox_cmd[2] = MSDW(nvram_dma);
2233 	mbox_cmd[3] = offset;
2234 	mbox_cmd[4] = size;
2235 
2236 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0],
2237 					 &mbox_sts[0]);
2238 	if (status != QLA_SUCCESS) {
2239 		DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
2240 				  "status %04X\n", ha->host_no, __func__,
2241 				  mbox_sts[0]));
2242 	}
2243 	return status;
2244 }
2245 
2246 int qla4xxx_restore_factory_defaults(struct scsi_qla_host *ha,
2247 				     uint32_t region, uint32_t field0,
2248 				     uint32_t field1)
2249 {
2250 	int status = QLA_SUCCESS;
2251 	uint32_t mbox_cmd[MBOX_REG_COUNT];
2252 	uint32_t mbox_sts[MBOX_REG_COUNT];
2253 
2254 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
2255 	memset(&mbox_sts, 0, sizeof(mbox_sts));
2256 
2257 	mbox_cmd[0] = MBOX_CMD_RESTORE_FACTORY_DEFAULTS;
2258 	mbox_cmd[3] = region;
2259 	mbox_cmd[4] = field0;
2260 	mbox_cmd[5] = field1;
2261 
2262 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 3, &mbox_cmd[0],
2263 					 &mbox_sts[0]);
2264 	if (status != QLA_SUCCESS) {
2265 		DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
2266 				  "status %04X\n", ha->host_no, __func__,
2267 				  mbox_sts[0]));
2268 	}
2269 	return status;
2270 }
2271 
2272 /**
2273  * qla4_8xxx_set_param - set driver version in firmware.
2274  * @ha: Pointer to host adapter structure.
2275  * @param: Parameter to set i.e driver version
2276  **/
2277 int qla4_8xxx_set_param(struct scsi_qla_host *ha, int param)
2278 {
2279 	uint32_t mbox_cmd[MBOX_REG_COUNT];
2280 	uint32_t mbox_sts[MBOX_REG_COUNT];
2281 	uint32_t status;
2282 
2283 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
2284 	memset(&mbox_sts, 0, sizeof(mbox_sts));
2285 
2286 	mbox_cmd[0] = MBOX_CMD_SET_PARAM;
2287 	if (param == SET_DRVR_VERSION) {
2288 		mbox_cmd[1] = SET_DRVR_VERSION;
2289 		strncpy((char *)&mbox_cmd[2], QLA4XXX_DRIVER_VERSION,
2290 			MAX_DRVR_VER_LEN - 1);
2291 	} else {
2292 		ql4_printk(KERN_ERR, ha, "%s: invalid parameter 0x%x\n",
2293 			   __func__, param);
2294 		status = QLA_ERROR;
2295 		goto exit_set_param;
2296 	}
2297 
2298 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 2, mbox_cmd,
2299 					 mbox_sts);
2300 	if (status == QLA_ERROR)
2301 		ql4_printk(KERN_ERR, ha, "%s: failed status %04X\n",
2302 			   __func__, mbox_sts[0]);
2303 
2304 exit_set_param:
2305 	return status;
2306 }
2307 
2308 /**
2309  * qla4_83xx_post_idc_ack - post IDC ACK
2310  * @ha: Pointer to host adapter structure.
2311  *
2312  * Posts IDC ACK for IDC Request Notification AEN.
2313  **/
2314 int qla4_83xx_post_idc_ack(struct scsi_qla_host *ha)
2315 {
2316 	uint32_t mbox_cmd[MBOX_REG_COUNT];
2317 	uint32_t mbox_sts[MBOX_REG_COUNT];
2318 	int status;
2319 
2320 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
2321 	memset(&mbox_sts, 0, sizeof(mbox_sts));
2322 
2323 	mbox_cmd[0] = MBOX_CMD_IDC_ACK;
2324 	mbox_cmd[1] = ha->idc_info.request_desc;
2325 	mbox_cmd[2] = ha->idc_info.info1;
2326 	mbox_cmd[3] = ha->idc_info.info2;
2327 	mbox_cmd[4] = ha->idc_info.info3;
2328 
2329 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, MBOX_REG_COUNT,
2330 					 mbox_cmd, mbox_sts);
2331 	if (status == QLA_ERROR)
2332 		ql4_printk(KERN_ERR, ha, "%s: failed status %04X\n", __func__,
2333 			   mbox_sts[0]);
2334 	else
2335 	       ql4_printk(KERN_INFO, ha, "%s: IDC ACK posted\n", __func__);
2336 
2337 	return status;
2338 }
2339 
2340 int qla4_84xx_config_acb(struct scsi_qla_host *ha, int acb_config)
2341 {
2342 	uint32_t mbox_cmd[MBOX_REG_COUNT];
2343 	uint32_t mbox_sts[MBOX_REG_COUNT];
2344 	struct addr_ctrl_blk *acb = NULL;
2345 	uint32_t acb_len = sizeof(struct addr_ctrl_blk);
2346 	int rval = QLA_SUCCESS;
2347 	dma_addr_t acb_dma;
2348 
2349 	acb = dma_alloc_coherent(&ha->pdev->dev,
2350 				 sizeof(struct addr_ctrl_blk),
2351 				 &acb_dma, GFP_KERNEL);
2352 	if (!acb) {
2353 		ql4_printk(KERN_ERR, ha, "%s: Unable to alloc acb\n", __func__);
2354 		rval = QLA_ERROR;
2355 		goto exit_config_acb;
2356 	}
2357 	memset(acb, 0, acb_len);
2358 
2359 	switch (acb_config) {
2360 	case ACB_CONFIG_DISABLE:
2361 		rval = qla4xxx_get_acb(ha, acb_dma, 0, acb_len);
2362 		if (rval != QLA_SUCCESS)
2363 			goto exit_free_acb;
2364 
2365 		rval = qla4xxx_disable_acb(ha);
2366 		if (rval != QLA_SUCCESS)
2367 			goto exit_free_acb;
2368 
2369 		if (!ha->saved_acb)
2370 			ha->saved_acb = kzalloc(acb_len, GFP_KERNEL);
2371 
2372 		if (!ha->saved_acb) {
2373 			ql4_printk(KERN_ERR, ha, "%s: Unable to alloc acb\n",
2374 				   __func__);
2375 			rval = QLA_ERROR;
2376 			goto exit_free_acb;
2377 		}
2378 		memcpy(ha->saved_acb, acb, acb_len);
2379 		break;
2380 	case ACB_CONFIG_SET:
2381 
2382 		if (!ha->saved_acb) {
2383 			ql4_printk(KERN_ERR, ha, "%s: Can't set ACB, Saved ACB not available\n",
2384 				   __func__);
2385 			rval = QLA_ERROR;
2386 			goto exit_free_acb;
2387 		}
2388 
2389 		memcpy(acb, ha->saved_acb, acb_len);
2390 
2391 		rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], acb_dma);
2392 		if (rval != QLA_SUCCESS)
2393 			goto exit_free_acb;
2394 
2395 		break;
2396 	default:
2397 		ql4_printk(KERN_ERR, ha, "%s: Invalid ACB Configuration\n",
2398 			   __func__);
2399 	}
2400 
2401 exit_free_acb:
2402 	dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk), acb,
2403 			  acb_dma);
2404 exit_config_acb:
2405 	if ((acb_config == ACB_CONFIG_SET) && ha->saved_acb) {
2406 		kfree(ha->saved_acb);
2407 		ha->saved_acb = NULL;
2408 	}
2409 	DEBUG2(ql4_printk(KERN_INFO, ha,
2410 			  "%s %s\n", __func__,
2411 			  rval == QLA_SUCCESS ? "SUCCEEDED" : "FAILED"));
2412 	return rval;
2413 }
2414 
2415 int qla4_83xx_get_port_config(struct scsi_qla_host *ha, uint32_t *config)
2416 {
2417 	uint32_t mbox_cmd[MBOX_REG_COUNT];
2418 	uint32_t mbox_sts[MBOX_REG_COUNT];
2419 	int status;
2420 
2421 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
2422 	memset(&mbox_sts, 0, sizeof(mbox_sts));
2423 
2424 	mbox_cmd[0] = MBOX_CMD_GET_PORT_CONFIG;
2425 
2426 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, MBOX_REG_COUNT,
2427 					 mbox_cmd, mbox_sts);
2428 	if (status == QLA_SUCCESS)
2429 		*config = mbox_sts[1];
2430 	else
2431 		ql4_printk(KERN_ERR, ha, "%s: failed status %04X\n", __func__,
2432 			   mbox_sts[0]);
2433 
2434 	return status;
2435 }
2436 
2437 int qla4_83xx_set_port_config(struct scsi_qla_host *ha, uint32_t *config)
2438 {
2439 	uint32_t mbox_cmd[MBOX_REG_COUNT];
2440 	uint32_t mbox_sts[MBOX_REG_COUNT];
2441 	int status;
2442 
2443 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
2444 	memset(&mbox_sts, 0, sizeof(mbox_sts));
2445 
2446 	mbox_cmd[0] = MBOX_CMD_SET_PORT_CONFIG;
2447 	mbox_cmd[1] = *config;
2448 
2449 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, MBOX_REG_COUNT,
2450 				mbox_cmd, mbox_sts);
2451 	if (status != QLA_SUCCESS)
2452 		ql4_printk(KERN_ERR, ha, "%s: failed status %04X\n", __func__,
2453 			   mbox_sts[0]);
2454 
2455 	return status;
2456 }
2457