xref: /openbmc/linux/drivers/scsi/qla4xxx/ql4_mbx.c (revision 275876e2)
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_alloc_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 	memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
637 
638 	/* Get Initialize Firmware Control Block. */
639 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
640 	memset(&mbox_sts, 0, sizeof(mbox_sts));
641 
642 	if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma) !=
643 	    QLA_SUCCESS) {
644 		dma_free_coherent(&ha->pdev->dev,
645 				  sizeof(struct addr_ctrl_blk),
646 				  init_fw_cb, init_fw_cb_dma);
647 		goto exit_init_fw_cb;
648 	}
649 
650 	/* Fill in the request and response queue information. */
651 	init_fw_cb->rqq_consumer_idx = cpu_to_le16(ha->request_out);
652 	init_fw_cb->compq_producer_idx = cpu_to_le16(ha->response_in);
653 	init_fw_cb->rqq_len = __constant_cpu_to_le16(REQUEST_QUEUE_DEPTH);
654 	init_fw_cb->compq_len = __constant_cpu_to_le16(RESPONSE_QUEUE_DEPTH);
655 	init_fw_cb->rqq_addr_lo = cpu_to_le32(LSDW(ha->request_dma));
656 	init_fw_cb->rqq_addr_hi = cpu_to_le32(MSDW(ha->request_dma));
657 	init_fw_cb->compq_addr_lo = cpu_to_le32(LSDW(ha->response_dma));
658 	init_fw_cb->compq_addr_hi = cpu_to_le32(MSDW(ha->response_dma));
659 	init_fw_cb->shdwreg_addr_lo = cpu_to_le32(LSDW(ha->shadow_regs_dma));
660 	init_fw_cb->shdwreg_addr_hi = cpu_to_le32(MSDW(ha->shadow_regs_dma));
661 
662 	/* Set up required options. */
663 	init_fw_cb->fw_options |=
664 		__constant_cpu_to_le16(FWOPT_SESSION_MODE |
665 				       FWOPT_INITIATOR_MODE);
666 
667 	if (is_qla80XX(ha))
668 		init_fw_cb->fw_options |=
669 		    __constant_cpu_to_le16(FWOPT_ENABLE_CRBDB);
670 
671 	init_fw_cb->fw_options &= __constant_cpu_to_le16(~FWOPT_TARGET_MODE);
672 
673 	init_fw_cb->add_fw_options = 0;
674 	init_fw_cb->add_fw_options |=
675 			__constant_cpu_to_le16(ADFWOPT_SERIALIZE_TASK_MGMT);
676 	init_fw_cb->add_fw_options |=
677 			__constant_cpu_to_le16(ADFWOPT_AUTOCONN_DISABLE);
678 
679 	if (qla4xxx_set_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)
680 		!= QLA_SUCCESS) {
681 		DEBUG2(printk(KERN_WARNING
682 			      "scsi%ld: %s: Failed to set init_fw_ctrl_blk\n",
683 			      ha->host_no, __func__));
684 		goto exit_init_fw_cb;
685 	}
686 
687 	if (qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0],
688 		init_fw_cb, init_fw_cb_dma) != QLA_SUCCESS) {
689 		DEBUG2(printk("scsi%ld: %s: Failed to update local ifcb\n",
690 				ha->host_no, __func__));
691 		goto exit_init_fw_cb;
692 	}
693 	status = QLA_SUCCESS;
694 
695 exit_init_fw_cb:
696 	dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
697 				init_fw_cb, init_fw_cb_dma);
698 exit_init_fw_cb_no_free:
699 	return status;
700 }
701 
702 /**
703  * qla4xxx_get_dhcp_ip_address - gets HBA ip address via DHCP
704  * @ha: Pointer to host adapter structure.
705  **/
706 int qla4xxx_get_dhcp_ip_address(struct scsi_qla_host * ha)
707 {
708 	struct addr_ctrl_blk *init_fw_cb;
709 	dma_addr_t init_fw_cb_dma;
710 	uint32_t mbox_cmd[MBOX_REG_COUNT];
711 	uint32_t mbox_sts[MBOX_REG_COUNT];
712 
713 	init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
714 					sizeof(struct addr_ctrl_blk),
715 					&init_fw_cb_dma, GFP_KERNEL);
716 	if (init_fw_cb == NULL) {
717 		printk("scsi%ld: %s: Unable to alloc init_cb\n", ha->host_no,
718 		       __func__);
719 		return QLA_ERROR;
720 	}
721 
722 	/* Get Initialize Firmware Control Block. */
723 	memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
724 	if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma) !=
725 	    QLA_SUCCESS) {
726 		DEBUG2(printk("scsi%ld: %s: Failed to get init_fw_ctrl_blk\n",
727 			      ha->host_no, __func__));
728 		dma_free_coherent(&ha->pdev->dev,
729 				  sizeof(struct addr_ctrl_blk),
730 				  init_fw_cb, init_fw_cb_dma);
731 		return QLA_ERROR;
732 	}
733 
734 	/* Save IP Address. */
735 	qla4xxx_update_local_ip(ha, init_fw_cb);
736 	dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
737 				init_fw_cb, init_fw_cb_dma);
738 
739 	return QLA_SUCCESS;
740 }
741 
742 /**
743  * qla4xxx_get_firmware_state - gets firmware state of HBA
744  * @ha: Pointer to host adapter structure.
745  **/
746 int qla4xxx_get_firmware_state(struct scsi_qla_host * ha)
747 {
748 	uint32_t mbox_cmd[MBOX_REG_COUNT];
749 	uint32_t mbox_sts[MBOX_REG_COUNT];
750 
751 	/* Get firmware version */
752 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
753 	memset(&mbox_sts, 0, sizeof(mbox_sts));
754 
755 	mbox_cmd[0] = MBOX_CMD_GET_FW_STATE;
756 
757 	if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 4, &mbox_cmd[0], &mbox_sts[0]) !=
758 	    QLA_SUCCESS) {
759 		DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_FW_STATE failed w/ "
760 			      "status %04X\n", ha->host_no, __func__,
761 			      mbox_sts[0]));
762 		return QLA_ERROR;
763 	}
764 	ha->firmware_state = mbox_sts[1];
765 	ha->board_id = mbox_sts[2];
766 	ha->addl_fw_state = mbox_sts[3];
767 	DEBUG2(printk("scsi%ld: %s firmware_state=0x%x\n",
768 		      ha->host_no, __func__, ha->firmware_state);)
769 
770 	return QLA_SUCCESS;
771 }
772 
773 /**
774  * qla4xxx_get_firmware_status - retrieves firmware status
775  * @ha: Pointer to host adapter structure.
776  **/
777 int qla4xxx_get_firmware_status(struct scsi_qla_host * ha)
778 {
779 	uint32_t mbox_cmd[MBOX_REG_COUNT];
780 	uint32_t mbox_sts[MBOX_REG_COUNT];
781 
782 	/* Get firmware version */
783 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
784 	memset(&mbox_sts, 0, sizeof(mbox_sts));
785 
786 	mbox_cmd[0] = MBOX_CMD_GET_FW_STATUS;
787 
788 	if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 3, &mbox_cmd[0], &mbox_sts[0]) !=
789 	    QLA_SUCCESS) {
790 		DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_FW_STATUS failed w/ "
791 			      "status %04X\n", ha->host_no, __func__,
792 			      mbox_sts[0]));
793 		return QLA_ERROR;
794 	}
795 
796 	/* High-water mark of IOCBs */
797 	ha->iocb_hiwat = mbox_sts[2];
798 	DEBUG2(ql4_printk(KERN_INFO, ha,
799 			  "%s: firmware IOCBs available = %d\n", __func__,
800 			  ha->iocb_hiwat));
801 
802 	if (ha->iocb_hiwat > IOCB_HIWAT_CUSHION)
803 		ha->iocb_hiwat -= IOCB_HIWAT_CUSHION;
804 
805 	/* Ideally, we should not enter this code, as the # of firmware
806 	 * IOCBs is hard-coded in the firmware. We set a default
807 	 * iocb_hiwat here just in case */
808 	if (ha->iocb_hiwat == 0) {
809 		ha->iocb_hiwat = REQUEST_QUEUE_DEPTH / 4;
810 		DEBUG2(ql4_printk(KERN_WARNING, ha,
811 				  "%s: Setting IOCB's to = %d\n", __func__,
812 				  ha->iocb_hiwat));
813 	}
814 
815 	return QLA_SUCCESS;
816 }
817 
818 /**
819  * qla4xxx_get_fwddb_entry - retrieves firmware ddb entry
820  * @ha: Pointer to host adapter structure.
821  * @fw_ddb_index: Firmware's device database index
822  * @fw_ddb_entry: Pointer to firmware's device database entry structure
823  * @num_valid_ddb_entries: Pointer to number of valid ddb entries
824  * @next_ddb_index: Pointer to next valid device database index
825  * @fw_ddb_device_state: Pointer to device state
826  **/
827 int qla4xxx_get_fwddb_entry(struct scsi_qla_host *ha,
828 			    uint16_t fw_ddb_index,
829 			    struct dev_db_entry *fw_ddb_entry,
830 			    dma_addr_t fw_ddb_entry_dma,
831 			    uint32_t *num_valid_ddb_entries,
832 			    uint32_t *next_ddb_index,
833 			    uint32_t *fw_ddb_device_state,
834 			    uint32_t *conn_err_detail,
835 			    uint16_t *tcp_source_port_num,
836 			    uint16_t *connection_id)
837 {
838 	int status = QLA_ERROR;
839 	uint16_t options;
840 	uint32_t mbox_cmd[MBOX_REG_COUNT];
841 	uint32_t mbox_sts[MBOX_REG_COUNT];
842 
843 	/* Make sure the device index is valid */
844 	if (fw_ddb_index >= MAX_DDB_ENTRIES) {
845 		DEBUG2(printk("scsi%ld: %s: ddb [%d] out of range.\n",
846 			      ha->host_no, __func__, fw_ddb_index));
847 		goto exit_get_fwddb;
848 	}
849 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
850 	memset(&mbox_sts, 0, sizeof(mbox_sts));
851 	if (fw_ddb_entry)
852 		memset(fw_ddb_entry, 0, sizeof(struct dev_db_entry));
853 
854 	mbox_cmd[0] = MBOX_CMD_GET_DATABASE_ENTRY;
855 	mbox_cmd[1] = (uint32_t) fw_ddb_index;
856 	mbox_cmd[2] = LSDW(fw_ddb_entry_dma);
857 	mbox_cmd[3] = MSDW(fw_ddb_entry_dma);
858 	mbox_cmd[4] = sizeof(struct dev_db_entry);
859 
860 	if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 7, &mbox_cmd[0], &mbox_sts[0]) ==
861 	    QLA_ERROR) {
862 		DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_DATABASE_ENTRY failed"
863 			      " with status 0x%04X\n", ha->host_no, __func__,
864 			      mbox_sts[0]));
865 		goto exit_get_fwddb;
866 	}
867 	if (fw_ddb_index != mbox_sts[1]) {
868 		DEBUG2(printk("scsi%ld: %s: ddb mismatch [%d] != [%d].\n",
869 			      ha->host_no, __func__, fw_ddb_index,
870 			      mbox_sts[1]));
871 		goto exit_get_fwddb;
872 	}
873 	if (fw_ddb_entry) {
874 		options = le16_to_cpu(fw_ddb_entry->options);
875 		if (options & DDB_OPT_IPV6_DEVICE) {
876 			ql4_printk(KERN_INFO, ha, "%s: DDB[%d] MB0 %04x Tot %d "
877 				"Next %d State %04x ConnErr %08x %pI6 "
878 				":%04d \"%s\"\n", __func__, fw_ddb_index,
879 				mbox_sts[0], mbox_sts[2], mbox_sts[3],
880 				mbox_sts[4], mbox_sts[5],
881 				fw_ddb_entry->ip_addr,
882 				le16_to_cpu(fw_ddb_entry->port),
883 				fw_ddb_entry->iscsi_name);
884 		} else {
885 			ql4_printk(KERN_INFO, ha, "%s: DDB[%d] MB0 %04x Tot %d "
886 				"Next %d State %04x ConnErr %08x %pI4 "
887 				":%04d \"%s\"\n", __func__, fw_ddb_index,
888 				mbox_sts[0], mbox_sts[2], mbox_sts[3],
889 				mbox_sts[4], mbox_sts[5],
890 				fw_ddb_entry->ip_addr,
891 				le16_to_cpu(fw_ddb_entry->port),
892 				fw_ddb_entry->iscsi_name);
893 		}
894 	}
895 	if (num_valid_ddb_entries)
896 		*num_valid_ddb_entries = mbox_sts[2];
897 	if (next_ddb_index)
898 		*next_ddb_index = mbox_sts[3];
899 	if (fw_ddb_device_state)
900 		*fw_ddb_device_state = mbox_sts[4];
901 
902 	/*
903 	 * RA: This mailbox has been changed to pass connection error and
904 	 * details.  Its true for ISP4010 as per Version E - Not sure when it
905 	 * was changed.	 Get the time2wait from the fw_dd_entry field :
906 	 * default_time2wait which we call it as minTime2Wait DEV_DB_ENTRY
907 	 * struct.
908 	 */
909 	if (conn_err_detail)
910 		*conn_err_detail = mbox_sts[5];
911 	if (tcp_source_port_num)
912 		*tcp_source_port_num = (uint16_t) (mbox_sts[6] >> 16);
913 	if (connection_id)
914 		*connection_id = (uint16_t) mbox_sts[6] & 0x00FF;
915 	status = QLA_SUCCESS;
916 
917 exit_get_fwddb:
918 	return status;
919 }
920 
921 int qla4xxx_conn_open(struct scsi_qla_host *ha, uint16_t fw_ddb_index)
922 {
923 	uint32_t mbox_cmd[MBOX_REG_COUNT];
924 	uint32_t mbox_sts[MBOX_REG_COUNT];
925 	int status;
926 
927 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
928 	memset(&mbox_sts, 0, sizeof(mbox_sts));
929 
930 	mbox_cmd[0] = MBOX_CMD_CONN_OPEN;
931 	mbox_cmd[1] = fw_ddb_index;
932 
933 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 2, &mbox_cmd[0],
934 					 &mbox_sts[0]);
935 	DEBUG2(ql4_printk(KERN_INFO, ha,
936 			  "%s: status = %d mbx0 = 0x%x mbx1 = 0x%x\n",
937 			  __func__, status, mbox_sts[0], mbox_sts[1]));
938 	return status;
939 }
940 
941 /**
942  * qla4xxx_set_fwddb_entry - sets a ddb entry.
943  * @ha: Pointer to host adapter structure.
944  * @fw_ddb_index: Firmware's device database index
945  * @fw_ddb_entry_dma: dma address of ddb entry
946  * @mbx_sts: mailbox 0 to be returned or NULL
947  *
948  * This routine initializes or updates the adapter's device database
949  * entry for the specified device.
950  **/
951 int qla4xxx_set_ddb_entry(struct scsi_qla_host * ha, uint16_t fw_ddb_index,
952 			  dma_addr_t fw_ddb_entry_dma, uint32_t *mbx_sts)
953 {
954 	uint32_t mbox_cmd[MBOX_REG_COUNT];
955 	uint32_t mbox_sts[MBOX_REG_COUNT];
956 	int status;
957 
958 	/* Do not wait for completion. The firmware will send us an
959 	 * ASTS_DATABASE_CHANGED (0x8014) to notify us of the login status.
960 	 */
961 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
962 	memset(&mbox_sts, 0, sizeof(mbox_sts));
963 
964 	mbox_cmd[0] = MBOX_CMD_SET_DATABASE_ENTRY;
965 	mbox_cmd[1] = (uint32_t) fw_ddb_index;
966 	mbox_cmd[2] = LSDW(fw_ddb_entry_dma);
967 	mbox_cmd[3] = MSDW(fw_ddb_entry_dma);
968 	mbox_cmd[4] = sizeof(struct dev_db_entry);
969 
970 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0],
971 					 &mbox_sts[0]);
972 	if (mbx_sts)
973 		*mbx_sts = mbox_sts[0];
974 	DEBUG2(printk("scsi%ld: %s: status=%d mbx0=0x%x mbx4=0x%x\n",
975 	    ha->host_no, __func__, status, mbox_sts[0], mbox_sts[4]);)
976 
977 	return status;
978 }
979 
980 int qla4xxx_session_logout_ddb(struct scsi_qla_host *ha,
981 			       struct ddb_entry *ddb_entry, int options)
982 {
983 	int status;
984 	uint32_t mbox_cmd[MBOX_REG_COUNT];
985 	uint32_t mbox_sts[MBOX_REG_COUNT];
986 
987 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
988 	memset(&mbox_sts, 0, sizeof(mbox_sts));
989 
990 	mbox_cmd[0] = MBOX_CMD_CONN_CLOSE_SESS_LOGOUT;
991 	mbox_cmd[1] = ddb_entry->fw_ddb_index;
992 	mbox_cmd[3] = options;
993 
994 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 2, &mbox_cmd[0],
995 					 &mbox_sts[0]);
996 	if (status != QLA_SUCCESS) {
997 		DEBUG2(ql4_printk(KERN_INFO, ha,
998 				  "%s: MBOX_CMD_CONN_CLOSE_SESS_LOGOUT "
999 				  "failed sts %04X %04X", __func__,
1000 				  mbox_sts[0], mbox_sts[1]));
1001 		if ((mbox_sts[0] == MBOX_STS_COMMAND_ERROR) &&
1002 		    (mbox_sts[1] == DDB_NOT_LOGGED_IN)) {
1003 			set_bit(DDB_CONN_CLOSE_FAILURE, &ddb_entry->flags);
1004 		}
1005 	}
1006 
1007 	return status;
1008 }
1009 
1010 /**
1011  * qla4xxx_get_crash_record - retrieves crash record.
1012  * @ha: Pointer to host adapter structure.
1013  *
1014  * This routine retrieves a crash record from the QLA4010 after an 8002h aen.
1015  **/
1016 void qla4xxx_get_crash_record(struct scsi_qla_host * ha)
1017 {
1018 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1019 	uint32_t mbox_sts[MBOX_REG_COUNT];
1020 	struct crash_record *crash_record = NULL;
1021 	dma_addr_t crash_record_dma = 0;
1022 	uint32_t crash_record_size = 0;
1023 
1024 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1025 	memset(&mbox_sts, 0, sizeof(mbox_cmd));
1026 
1027 	/* Get size of crash record. */
1028 	mbox_cmd[0] = MBOX_CMD_GET_CRASH_RECORD;
1029 
1030 	if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
1031 	    QLA_SUCCESS) {
1032 		DEBUG2(printk("scsi%ld: %s: ERROR: Unable to retrieve size!\n",
1033 			      ha->host_no, __func__));
1034 		goto exit_get_crash_record;
1035 	}
1036 	crash_record_size = mbox_sts[4];
1037 	if (crash_record_size == 0) {
1038 		DEBUG2(printk("scsi%ld: %s: ERROR: Crash record size is 0!\n",
1039 			      ha->host_no, __func__));
1040 		goto exit_get_crash_record;
1041 	}
1042 
1043 	/* Alloc Memory for Crash Record. */
1044 	crash_record = dma_alloc_coherent(&ha->pdev->dev, crash_record_size,
1045 					  &crash_record_dma, GFP_KERNEL);
1046 	if (crash_record == NULL)
1047 		goto exit_get_crash_record;
1048 
1049 	/* Get Crash Record. */
1050 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1051 	memset(&mbox_sts, 0, sizeof(mbox_cmd));
1052 
1053 	mbox_cmd[0] = MBOX_CMD_GET_CRASH_RECORD;
1054 	mbox_cmd[2] = LSDW(crash_record_dma);
1055 	mbox_cmd[3] = MSDW(crash_record_dma);
1056 	mbox_cmd[4] = crash_record_size;
1057 
1058 	if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
1059 	    QLA_SUCCESS)
1060 		goto exit_get_crash_record;
1061 
1062 	/* Dump Crash Record. */
1063 
1064 exit_get_crash_record:
1065 	if (crash_record)
1066 		dma_free_coherent(&ha->pdev->dev, crash_record_size,
1067 				  crash_record, crash_record_dma);
1068 }
1069 
1070 /**
1071  * qla4xxx_get_conn_event_log - retrieves connection event log
1072  * @ha: Pointer to host adapter structure.
1073  **/
1074 void qla4xxx_get_conn_event_log(struct scsi_qla_host * ha)
1075 {
1076 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1077 	uint32_t mbox_sts[MBOX_REG_COUNT];
1078 	struct conn_event_log_entry *event_log = NULL;
1079 	dma_addr_t event_log_dma = 0;
1080 	uint32_t event_log_size = 0;
1081 	uint32_t num_valid_entries;
1082 	uint32_t      oldest_entry = 0;
1083 	uint32_t	max_event_log_entries;
1084 	uint8_t		i;
1085 
1086 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1087 	memset(&mbox_sts, 0, sizeof(mbox_cmd));
1088 
1089 	/* Get size of crash record. */
1090 	mbox_cmd[0] = MBOX_CMD_GET_CONN_EVENT_LOG;
1091 
1092 	if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
1093 	    QLA_SUCCESS)
1094 		goto exit_get_event_log;
1095 
1096 	event_log_size = mbox_sts[4];
1097 	if (event_log_size == 0)
1098 		goto exit_get_event_log;
1099 
1100 	/* Alloc Memory for Crash Record. */
1101 	event_log = dma_alloc_coherent(&ha->pdev->dev, event_log_size,
1102 				       &event_log_dma, GFP_KERNEL);
1103 	if (event_log == NULL)
1104 		goto exit_get_event_log;
1105 
1106 	/* Get Crash Record. */
1107 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1108 	memset(&mbox_sts, 0, sizeof(mbox_cmd));
1109 
1110 	mbox_cmd[0] = MBOX_CMD_GET_CONN_EVENT_LOG;
1111 	mbox_cmd[2] = LSDW(event_log_dma);
1112 	mbox_cmd[3] = MSDW(event_log_dma);
1113 
1114 	if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
1115 	    QLA_SUCCESS) {
1116 		DEBUG2(printk("scsi%ld: %s: ERROR: Unable to retrieve event "
1117 			      "log!\n", ha->host_no, __func__));
1118 		goto exit_get_event_log;
1119 	}
1120 
1121 	/* Dump Event Log. */
1122 	num_valid_entries = mbox_sts[1];
1123 
1124 	max_event_log_entries = event_log_size /
1125 		sizeof(struct conn_event_log_entry);
1126 
1127 	if (num_valid_entries > max_event_log_entries)
1128 		oldest_entry = num_valid_entries % max_event_log_entries;
1129 
1130 	DEBUG3(printk("scsi%ld: Connection Event Log Dump (%d entries):\n",
1131 		      ha->host_no, num_valid_entries));
1132 
1133 	if (ql4xextended_error_logging == 3) {
1134 		if (oldest_entry == 0) {
1135 			/* Circular Buffer has not wrapped around */
1136 			for (i=0; i < num_valid_entries; i++) {
1137 				qla4xxx_dump_buffer((uint8_t *)event_log+
1138 						    (i*sizeof(*event_log)),
1139 						    sizeof(*event_log));
1140 			}
1141 		}
1142 		else {
1143 			/* Circular Buffer has wrapped around -
1144 			 * display accordingly*/
1145 			for (i=oldest_entry; i < max_event_log_entries; i++) {
1146 				qla4xxx_dump_buffer((uint8_t *)event_log+
1147 						    (i*sizeof(*event_log)),
1148 						    sizeof(*event_log));
1149 			}
1150 			for (i=0; i < oldest_entry; i++) {
1151 				qla4xxx_dump_buffer((uint8_t *)event_log+
1152 						    (i*sizeof(*event_log)),
1153 						    sizeof(*event_log));
1154 			}
1155 		}
1156 	}
1157 
1158 exit_get_event_log:
1159 	if (event_log)
1160 		dma_free_coherent(&ha->pdev->dev, event_log_size, event_log,
1161 				  event_log_dma);
1162 }
1163 
1164 /**
1165  * qla4xxx_abort_task - issues Abort Task
1166  * @ha: Pointer to host adapter structure.
1167  * @srb: Pointer to srb entry
1168  *
1169  * This routine performs a LUN RESET on the specified target/lun.
1170  * The caller must ensure that the ddb_entry and lun_entry pointers
1171  * are valid before calling this routine.
1172  **/
1173 int qla4xxx_abort_task(struct scsi_qla_host *ha, struct srb *srb)
1174 {
1175 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1176 	uint32_t mbox_sts[MBOX_REG_COUNT];
1177 	struct scsi_cmnd *cmd = srb->cmd;
1178 	int status = QLA_SUCCESS;
1179 	unsigned long flags = 0;
1180 	uint32_t index;
1181 
1182 	/*
1183 	 * Send abort task command to ISP, so that the ISP will return
1184 	 * request with ABORT status
1185 	 */
1186 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1187 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1188 
1189 	spin_lock_irqsave(&ha->hardware_lock, flags);
1190 	index = (unsigned long)(unsigned char *)cmd->host_scribble;
1191 	spin_unlock_irqrestore(&ha->hardware_lock, flags);
1192 
1193 	/* Firmware already posted completion on response queue */
1194 	if (index == MAX_SRBS)
1195 		return status;
1196 
1197 	mbox_cmd[0] = MBOX_CMD_ABORT_TASK;
1198 	mbox_cmd[1] = srb->ddb->fw_ddb_index;
1199 	mbox_cmd[2] = index;
1200 	/* Immediate Command Enable */
1201 	mbox_cmd[5] = 0x01;
1202 
1203 	qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0],
1204 	    &mbox_sts[0]);
1205 	if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE) {
1206 		status = QLA_ERROR;
1207 
1208 		DEBUG2(printk(KERN_WARNING "scsi%ld:%d:%llu: abort task FAILED: "
1209 		    "mbx0=%04X, mb1=%04X, mb2=%04X, mb3=%04X, mb4=%04X\n",
1210 		    ha->host_no, cmd->device->id, cmd->device->lun, mbox_sts[0],
1211 		    mbox_sts[1], mbox_sts[2], mbox_sts[3], mbox_sts[4]));
1212 	}
1213 
1214 	return status;
1215 }
1216 
1217 /**
1218  * qla4xxx_reset_lun - issues LUN Reset
1219  * @ha: Pointer to host adapter structure.
1220  * @ddb_entry: Pointer to device database entry
1221  * @lun: lun number
1222  *
1223  * This routine performs a LUN RESET on the specified target/lun.
1224  * The caller must ensure that the ddb_entry and lun_entry pointers
1225  * are valid before calling this routine.
1226  **/
1227 int qla4xxx_reset_lun(struct scsi_qla_host * ha, struct ddb_entry * ddb_entry,
1228 		      uint64_t lun)
1229 {
1230 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1231 	uint32_t mbox_sts[MBOX_REG_COUNT];
1232 	uint32_t scsi_lun[2];
1233 	int status = QLA_SUCCESS;
1234 
1235 	DEBUG2(printk("scsi%ld:%d:%llu: lun reset issued\n", ha->host_no,
1236 		      ddb_entry->fw_ddb_index, lun));
1237 
1238 	/*
1239 	 * Send lun reset command to ISP, so that the ISP will return all
1240 	 * outstanding requests with RESET status
1241 	 */
1242 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1243 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1244 	int_to_scsilun(lun, (struct scsi_lun *) scsi_lun);
1245 
1246 	mbox_cmd[0] = MBOX_CMD_LUN_RESET;
1247 	mbox_cmd[1] = ddb_entry->fw_ddb_index;
1248 	/* FW expects LUN bytes 0-3 in Incoming Mailbox 2
1249 	 * (LUN byte 0 is LSByte, byte 3 is MSByte) */
1250 	mbox_cmd[2] = cpu_to_le32(scsi_lun[0]);
1251 	/* FW expects LUN bytes 4-7 in Incoming Mailbox 3
1252 	 * (LUN byte 4 is LSByte, byte 7 is MSByte) */
1253 	mbox_cmd[3] = cpu_to_le32(scsi_lun[1]);
1254 	mbox_cmd[5] = 0x01;	/* Immediate Command Enable */
1255 
1256 	qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0], &mbox_sts[0]);
1257 	if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE &&
1258 	    mbox_sts[0] != MBOX_STS_COMMAND_ERROR)
1259 		status = QLA_ERROR;
1260 
1261 	return status;
1262 }
1263 
1264 /**
1265  * qla4xxx_reset_target - issues target Reset
1266  * @ha: Pointer to host adapter structure.
1267  * @db_entry: Pointer to device database entry
1268  * @un_entry: Pointer to lun entry structure
1269  *
1270  * This routine performs a TARGET RESET on the specified target.
1271  * The caller must ensure that the ddb_entry pointers
1272  * are valid before calling this routine.
1273  **/
1274 int qla4xxx_reset_target(struct scsi_qla_host *ha,
1275 			 struct ddb_entry *ddb_entry)
1276 {
1277 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1278 	uint32_t mbox_sts[MBOX_REG_COUNT];
1279 	int status = QLA_SUCCESS;
1280 
1281 	DEBUG2(printk("scsi%ld:%d: target reset issued\n", ha->host_no,
1282 		      ddb_entry->fw_ddb_index));
1283 
1284 	/*
1285 	 * Send target reset command to ISP, so that the ISP will return all
1286 	 * outstanding requests with RESET status
1287 	 */
1288 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1289 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1290 
1291 	mbox_cmd[0] = MBOX_CMD_TARGET_WARM_RESET;
1292 	mbox_cmd[1] = ddb_entry->fw_ddb_index;
1293 	mbox_cmd[5] = 0x01;	/* Immediate Command Enable */
1294 
1295 	qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0],
1296 				&mbox_sts[0]);
1297 	if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE &&
1298 	    mbox_sts[0] != MBOX_STS_COMMAND_ERROR)
1299 		status = QLA_ERROR;
1300 
1301 	return status;
1302 }
1303 
1304 int qla4xxx_get_flash(struct scsi_qla_host * ha, dma_addr_t dma_addr,
1305 		      uint32_t offset, uint32_t len)
1306 {
1307 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1308 	uint32_t mbox_sts[MBOX_REG_COUNT];
1309 
1310 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1311 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1312 
1313 	mbox_cmd[0] = MBOX_CMD_READ_FLASH;
1314 	mbox_cmd[1] = LSDW(dma_addr);
1315 	mbox_cmd[2] = MSDW(dma_addr);
1316 	mbox_cmd[3] = offset;
1317 	mbox_cmd[4] = len;
1318 
1319 	if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 2, &mbox_cmd[0], &mbox_sts[0]) !=
1320 	    QLA_SUCCESS) {
1321 		DEBUG2(printk("scsi%ld: %s: MBOX_CMD_READ_FLASH, failed w/ "
1322 		    "status %04X %04X, offset %08x, len %08x\n", ha->host_no,
1323 		    __func__, mbox_sts[0], mbox_sts[1], offset, len));
1324 		return QLA_ERROR;
1325 	}
1326 	return QLA_SUCCESS;
1327 }
1328 
1329 /**
1330  * qla4xxx_about_firmware - gets FW, iscsi draft and boot loader version
1331  * @ha: Pointer to host adapter structure.
1332  *
1333  * Retrieves the FW version, iSCSI draft version & bootloader version of HBA.
1334  * Mailboxes 2 & 3 may hold an address for data. Make sure that we write 0 to
1335  * those mailboxes, if unused.
1336  **/
1337 int qla4xxx_about_firmware(struct scsi_qla_host *ha)
1338 {
1339 	struct about_fw_info *about_fw = NULL;
1340 	dma_addr_t about_fw_dma;
1341 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1342 	uint32_t mbox_sts[MBOX_REG_COUNT];
1343 	int status = QLA_ERROR;
1344 
1345 	about_fw = dma_alloc_coherent(&ha->pdev->dev,
1346 				      sizeof(struct about_fw_info),
1347 				      &about_fw_dma, GFP_KERNEL);
1348 	if (!about_fw) {
1349 		DEBUG2(ql4_printk(KERN_ERR, ha, "%s: Unable to alloc memory "
1350 				  "for about_fw\n", __func__));
1351 		return status;
1352 	}
1353 
1354 	memset(about_fw, 0, sizeof(struct about_fw_info));
1355 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1356 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1357 
1358 	mbox_cmd[0] = MBOX_CMD_ABOUT_FW;
1359 	mbox_cmd[2] = LSDW(about_fw_dma);
1360 	mbox_cmd[3] = MSDW(about_fw_dma);
1361 	mbox_cmd[4] = sizeof(struct about_fw_info);
1362 
1363 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, MBOX_REG_COUNT,
1364 					 &mbox_cmd[0], &mbox_sts[0]);
1365 	if (status != QLA_SUCCESS) {
1366 		DEBUG2(ql4_printk(KERN_WARNING, ha, "%s: MBOX_CMD_ABOUT_FW "
1367 				  "failed w/ status %04X\n", __func__,
1368 				  mbox_sts[0]));
1369 		goto exit_about_fw;
1370 	}
1371 
1372 	/* Save version information. */
1373 	ha->fw_info.fw_major = le16_to_cpu(about_fw->fw_major);
1374 	ha->fw_info.fw_minor = le16_to_cpu(about_fw->fw_minor);
1375 	ha->fw_info.fw_patch = le16_to_cpu(about_fw->fw_patch);
1376 	ha->fw_info.fw_build = le16_to_cpu(about_fw->fw_build);
1377 	memcpy(ha->fw_info.fw_build_date, about_fw->fw_build_date,
1378 	       sizeof(about_fw->fw_build_date));
1379 	memcpy(ha->fw_info.fw_build_time, about_fw->fw_build_time,
1380 	       sizeof(about_fw->fw_build_time));
1381 	strcpy((char *)ha->fw_info.fw_build_user,
1382 	       skip_spaces((char *)about_fw->fw_build_user));
1383 	ha->fw_info.fw_load_source = le16_to_cpu(about_fw->fw_load_source);
1384 	ha->fw_info.iscsi_major = le16_to_cpu(about_fw->iscsi_major);
1385 	ha->fw_info.iscsi_minor = le16_to_cpu(about_fw->iscsi_minor);
1386 	ha->fw_info.bootload_major = le16_to_cpu(about_fw->bootload_major);
1387 	ha->fw_info.bootload_minor = le16_to_cpu(about_fw->bootload_minor);
1388 	ha->fw_info.bootload_patch = le16_to_cpu(about_fw->bootload_patch);
1389 	ha->fw_info.bootload_build = le16_to_cpu(about_fw->bootload_build);
1390 	strcpy((char *)ha->fw_info.extended_timestamp,
1391 	       skip_spaces((char *)about_fw->extended_timestamp));
1392 
1393 	ha->fw_uptime_secs = le32_to_cpu(mbox_sts[5]);
1394 	ha->fw_uptime_msecs = le32_to_cpu(mbox_sts[6]);
1395 	status = QLA_SUCCESS;
1396 
1397 exit_about_fw:
1398 	dma_free_coherent(&ha->pdev->dev, sizeof(struct about_fw_info),
1399 			  about_fw, about_fw_dma);
1400 	return status;
1401 }
1402 
1403 int qla4xxx_get_default_ddb(struct scsi_qla_host *ha, uint32_t options,
1404 			    dma_addr_t dma_addr)
1405 {
1406 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1407 	uint32_t mbox_sts[MBOX_REG_COUNT];
1408 
1409 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1410 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1411 
1412 	mbox_cmd[0] = MBOX_CMD_GET_DATABASE_ENTRY_DEFAULTS;
1413 	mbox_cmd[1] = options;
1414 	mbox_cmd[2] = LSDW(dma_addr);
1415 	mbox_cmd[3] = MSDW(dma_addr);
1416 
1417 	if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0], &mbox_sts[0]) !=
1418 	    QLA_SUCCESS) {
1419 		DEBUG2(printk("scsi%ld: %s: failed status %04X\n",
1420 		     ha->host_no, __func__, mbox_sts[0]));
1421 		return QLA_ERROR;
1422 	}
1423 	return QLA_SUCCESS;
1424 }
1425 
1426 int qla4xxx_req_ddb_entry(struct scsi_qla_host *ha, uint32_t ddb_index,
1427 			  uint32_t *mbx_sts)
1428 {
1429 	int status;
1430 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1431 	uint32_t mbox_sts[MBOX_REG_COUNT];
1432 
1433 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1434 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1435 
1436 	mbox_cmd[0] = MBOX_CMD_REQUEST_DATABASE_ENTRY;
1437 	mbox_cmd[1] = ddb_index;
1438 
1439 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0],
1440 					 &mbox_sts[0]);
1441 	if (status != QLA_SUCCESS) {
1442 		DEBUG2(ql4_printk(KERN_ERR, ha, "%s: failed status %04X\n",
1443 				   __func__, mbox_sts[0]));
1444 	}
1445 
1446 	*mbx_sts = mbox_sts[0];
1447 	return status;
1448 }
1449 
1450 int qla4xxx_clear_ddb_entry(struct scsi_qla_host *ha, uint32_t ddb_index)
1451 {
1452 	int status;
1453 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1454 	uint32_t mbox_sts[MBOX_REG_COUNT];
1455 
1456 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1457 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1458 
1459 	mbox_cmd[0] = MBOX_CMD_CLEAR_DATABASE_ENTRY;
1460 	mbox_cmd[1] = ddb_index;
1461 
1462 	status = qla4xxx_mailbox_command(ha, 2, 1, &mbox_cmd[0],
1463 					 &mbox_sts[0]);
1464 	if (status != QLA_SUCCESS) {
1465 		DEBUG2(ql4_printk(KERN_ERR, ha, "%s: failed status %04X\n",
1466 				   __func__, mbox_sts[0]));
1467 	}
1468 
1469 	return status;
1470 }
1471 
1472 int qla4xxx_set_flash(struct scsi_qla_host *ha, dma_addr_t dma_addr,
1473 		      uint32_t offset, uint32_t length, uint32_t options)
1474 {
1475 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1476 	uint32_t mbox_sts[MBOX_REG_COUNT];
1477 	int status = QLA_SUCCESS;
1478 
1479 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1480 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1481 
1482 	mbox_cmd[0] = MBOX_CMD_WRITE_FLASH;
1483 	mbox_cmd[1] = LSDW(dma_addr);
1484 	mbox_cmd[2] = MSDW(dma_addr);
1485 	mbox_cmd[3] = offset;
1486 	mbox_cmd[4] = length;
1487 	mbox_cmd[5] = options;
1488 
1489 	status = qla4xxx_mailbox_command(ha, 6, 2, &mbox_cmd[0], &mbox_sts[0]);
1490 	if (status != QLA_SUCCESS) {
1491 		DEBUG2(ql4_printk(KERN_WARNING, ha, "%s: MBOX_CMD_WRITE_FLASH "
1492 				  "failed w/ status %04X, mbx1 %04X\n",
1493 				  __func__, mbox_sts[0], mbox_sts[1]));
1494 	}
1495 	return status;
1496 }
1497 
1498 int qla4xxx_bootdb_by_index(struct scsi_qla_host *ha,
1499 			    struct dev_db_entry *fw_ddb_entry,
1500 			    dma_addr_t fw_ddb_entry_dma, uint16_t ddb_index)
1501 {
1502 	uint32_t dev_db_start_offset = FLASH_OFFSET_DB_INFO;
1503 	uint32_t dev_db_end_offset;
1504 	int status = QLA_ERROR;
1505 
1506 	memset(fw_ddb_entry, 0, sizeof(*fw_ddb_entry));
1507 
1508 	dev_db_start_offset += (ddb_index * sizeof(*fw_ddb_entry));
1509 	dev_db_end_offset = FLASH_OFFSET_DB_END;
1510 
1511 	if (dev_db_start_offset > dev_db_end_offset) {
1512 		DEBUG2(ql4_printk(KERN_ERR, ha,
1513 				  "%s:Invalid DDB index %d", __func__,
1514 				  ddb_index));
1515 		goto exit_bootdb_failed;
1516 	}
1517 
1518 	if (qla4xxx_get_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
1519 			      sizeof(*fw_ddb_entry)) != QLA_SUCCESS) {
1520 		ql4_printk(KERN_ERR, ha, "scsi%ld: %s: Get Flash"
1521 			   "failed\n", ha->host_no, __func__);
1522 		goto exit_bootdb_failed;
1523 	}
1524 
1525 	if (fw_ddb_entry->cookie == DDB_VALID_COOKIE)
1526 		status = QLA_SUCCESS;
1527 
1528 exit_bootdb_failed:
1529 	return status;
1530 }
1531 
1532 int qla4xxx_flashdb_by_index(struct scsi_qla_host *ha,
1533 			     struct dev_db_entry *fw_ddb_entry,
1534 			     dma_addr_t fw_ddb_entry_dma, uint16_t ddb_index)
1535 {
1536 	uint32_t dev_db_start_offset;
1537 	uint32_t dev_db_end_offset;
1538 	int status = QLA_ERROR;
1539 
1540 	memset(fw_ddb_entry, 0, sizeof(*fw_ddb_entry));
1541 
1542 	if (is_qla40XX(ha)) {
1543 		dev_db_start_offset = FLASH_OFFSET_DB_INFO;
1544 		dev_db_end_offset = FLASH_OFFSET_DB_END;
1545 	} else {
1546 		dev_db_start_offset = FLASH_RAW_ACCESS_ADDR +
1547 				      (ha->hw.flt_region_ddb << 2);
1548 		/* flt_ddb_size is DDB table size for both ports
1549 		 * so divide it by 2 to calculate the offset for second port
1550 		 */
1551 		if (ha->port_num == 1)
1552 			dev_db_start_offset += (ha->hw.flt_ddb_size / 2);
1553 
1554 		dev_db_end_offset = dev_db_start_offset +
1555 				    (ha->hw.flt_ddb_size / 2);
1556 	}
1557 
1558 	dev_db_start_offset += (ddb_index * sizeof(*fw_ddb_entry));
1559 
1560 	if (dev_db_start_offset > dev_db_end_offset) {
1561 		DEBUG2(ql4_printk(KERN_ERR, ha,
1562 				  "%s:Invalid DDB index %d", __func__,
1563 				  ddb_index));
1564 		goto exit_fdb_failed;
1565 	}
1566 
1567 	if (qla4xxx_get_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
1568 			      sizeof(*fw_ddb_entry)) != QLA_SUCCESS) {
1569 		ql4_printk(KERN_ERR, ha, "scsi%ld: %s: Get Flash failed\n",
1570 			   ha->host_no, __func__);
1571 		goto exit_fdb_failed;
1572 	}
1573 
1574 	if (fw_ddb_entry->cookie == DDB_VALID_COOKIE)
1575 		status = QLA_SUCCESS;
1576 
1577 exit_fdb_failed:
1578 	return status;
1579 }
1580 
1581 int qla4xxx_get_chap(struct scsi_qla_host *ha, char *username, char *password,
1582 		     uint16_t idx)
1583 {
1584 	int ret = 0;
1585 	int rval = QLA_ERROR;
1586 	uint32_t offset = 0, chap_size;
1587 	struct ql4_chap_table *chap_table;
1588 	dma_addr_t chap_dma;
1589 
1590 	chap_table = dma_pool_alloc(ha->chap_dma_pool, GFP_KERNEL, &chap_dma);
1591 	if (chap_table == NULL)
1592 		return -ENOMEM;
1593 
1594 	chap_size = sizeof(struct ql4_chap_table);
1595 	memset(chap_table, 0, chap_size);
1596 
1597 	if (is_qla40XX(ha))
1598 		offset = FLASH_CHAP_OFFSET | (idx * chap_size);
1599 	else {
1600 		offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
1601 		/* flt_chap_size is CHAP table size for both ports
1602 		 * so divide it by 2 to calculate the offset for second port
1603 		 */
1604 		if (ha->port_num == 1)
1605 			offset += (ha->hw.flt_chap_size / 2);
1606 		offset += (idx * chap_size);
1607 	}
1608 
1609 	rval = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
1610 	if (rval != QLA_SUCCESS) {
1611 		ret = -EINVAL;
1612 		goto exit_get_chap;
1613 	}
1614 
1615 	DEBUG2(ql4_printk(KERN_INFO, ha, "Chap Cookie: x%x\n",
1616 		__le16_to_cpu(chap_table->cookie)));
1617 
1618 	if (__le16_to_cpu(chap_table->cookie) != CHAP_VALID_COOKIE) {
1619 		ql4_printk(KERN_ERR, ha, "No valid chap entry found\n");
1620 		goto exit_get_chap;
1621 	}
1622 
1623 	strlcpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
1624 	strlcpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
1625 	chap_table->cookie = __constant_cpu_to_le16(CHAP_VALID_COOKIE);
1626 
1627 exit_get_chap:
1628 	dma_pool_free(ha->chap_dma_pool, chap_table, chap_dma);
1629 	return ret;
1630 }
1631 
1632 /**
1633  * qla4xxx_set_chap - Make a chap entry at the given index
1634  * @ha: pointer to adapter structure
1635  * @username: CHAP username to set
1636  * @password: CHAP password to set
1637  * @idx: CHAP index at which to make the entry
1638  * @bidi: type of chap entry (chap_in or chap_out)
1639  *
1640  * Create chap entry at the given index with the information provided.
1641  *
1642  * Note: Caller should acquire the chap lock before getting here.
1643  **/
1644 int qla4xxx_set_chap(struct scsi_qla_host *ha, char *username, char *password,
1645 		     uint16_t idx, int bidi)
1646 {
1647 	int ret = 0;
1648 	int rval = QLA_ERROR;
1649 	uint32_t offset = 0;
1650 	struct ql4_chap_table *chap_table;
1651 	uint32_t chap_size = 0;
1652 	dma_addr_t chap_dma;
1653 
1654 	chap_table = dma_pool_alloc(ha->chap_dma_pool, GFP_KERNEL, &chap_dma);
1655 	if (chap_table == NULL) {
1656 		ret =  -ENOMEM;
1657 		goto exit_set_chap;
1658 	}
1659 
1660 	memset(chap_table, 0, sizeof(struct ql4_chap_table));
1661 	if (bidi)
1662 		chap_table->flags |= BIT_6; /* peer */
1663 	else
1664 		chap_table->flags |= BIT_7; /* local */
1665 	chap_table->secret_len = strlen(password);
1666 	strncpy(chap_table->secret, password, MAX_CHAP_SECRET_LEN - 1);
1667 	strncpy(chap_table->name, username, MAX_CHAP_NAME_LEN - 1);
1668 	chap_table->cookie = __constant_cpu_to_le16(CHAP_VALID_COOKIE);
1669 
1670 	if (is_qla40XX(ha)) {
1671 		chap_size = MAX_CHAP_ENTRIES_40XX * sizeof(*chap_table);
1672 		offset = FLASH_CHAP_OFFSET;
1673 	} else { /* Single region contains CHAP info for both ports which is
1674 		  * divided into half for each port.
1675 		  */
1676 		chap_size = ha->hw.flt_chap_size / 2;
1677 		offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
1678 		if (ha->port_num == 1)
1679 			offset += chap_size;
1680 	}
1681 
1682 	offset += (idx * sizeof(struct ql4_chap_table));
1683 	rval = qla4xxx_set_flash(ha, chap_dma, offset,
1684 				sizeof(struct ql4_chap_table),
1685 				FLASH_OPT_RMW_COMMIT);
1686 
1687 	if (rval == QLA_SUCCESS && ha->chap_list) {
1688 		/* Update ha chap_list cache */
1689 		memcpy((struct ql4_chap_table *)ha->chap_list + idx,
1690 		       chap_table, sizeof(struct ql4_chap_table));
1691 	}
1692 	dma_pool_free(ha->chap_dma_pool, chap_table, chap_dma);
1693 	if (rval != QLA_SUCCESS)
1694 		ret =  -EINVAL;
1695 
1696 exit_set_chap:
1697 	return ret;
1698 }
1699 
1700 
1701 int qla4xxx_get_uni_chap_at_index(struct scsi_qla_host *ha, char *username,
1702 				  char *password, uint16_t chap_index)
1703 {
1704 	int rval = QLA_ERROR;
1705 	struct ql4_chap_table *chap_table = NULL;
1706 	int max_chap_entries;
1707 
1708 	if (!ha->chap_list) {
1709 		ql4_printk(KERN_ERR, ha, "Do not have CHAP table cache\n");
1710 		rval = QLA_ERROR;
1711 		goto exit_uni_chap;
1712 	}
1713 
1714 	if (!username || !password) {
1715 		ql4_printk(KERN_ERR, ha, "No memory for username & secret\n");
1716 		rval = QLA_ERROR;
1717 		goto exit_uni_chap;
1718 	}
1719 
1720 	if (is_qla80XX(ha))
1721 		max_chap_entries = (ha->hw.flt_chap_size / 2) /
1722 				   sizeof(struct ql4_chap_table);
1723 	else
1724 		max_chap_entries = MAX_CHAP_ENTRIES_40XX;
1725 
1726 	if (chap_index > max_chap_entries) {
1727 		ql4_printk(KERN_ERR, ha, "Invalid Chap index\n");
1728 		rval = QLA_ERROR;
1729 		goto exit_uni_chap;
1730 	}
1731 
1732 	mutex_lock(&ha->chap_sem);
1733 	chap_table = (struct ql4_chap_table *)ha->chap_list + chap_index;
1734 	if (chap_table->cookie != __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
1735 		rval = QLA_ERROR;
1736 		goto exit_unlock_uni_chap;
1737 	}
1738 
1739 	if (!(chap_table->flags & BIT_7)) {
1740 		ql4_printk(KERN_ERR, ha, "Unidirectional entry not set\n");
1741 		rval = QLA_ERROR;
1742 		goto exit_unlock_uni_chap;
1743 	}
1744 
1745 	strlcpy(password, chap_table->secret, MAX_CHAP_SECRET_LEN);
1746 	strlcpy(username, chap_table->name, MAX_CHAP_NAME_LEN);
1747 
1748 	rval = QLA_SUCCESS;
1749 
1750 exit_unlock_uni_chap:
1751 	mutex_unlock(&ha->chap_sem);
1752 exit_uni_chap:
1753 	return rval;
1754 }
1755 
1756 /**
1757  * qla4xxx_get_chap_index - Get chap index given username and secret
1758  * @ha: pointer to adapter structure
1759  * @username: CHAP username to be searched
1760  * @password: CHAP password to be searched
1761  * @bidi: Is this a BIDI CHAP
1762  * @chap_index: CHAP index to be returned
1763  *
1764  * Match the username and password in the chap_list, return the index if a
1765  * match is found. If a match is not found then add the entry in FLASH and
1766  * return the index at which entry is written in the FLASH.
1767  **/
1768 int qla4xxx_get_chap_index(struct scsi_qla_host *ha, char *username,
1769 			   char *password, int bidi, uint16_t *chap_index)
1770 {
1771 	int i, rval;
1772 	int free_index = -1;
1773 	int found_index = 0;
1774 	int max_chap_entries = 0;
1775 	struct ql4_chap_table *chap_table;
1776 
1777 	if (is_qla80XX(ha))
1778 		max_chap_entries = (ha->hw.flt_chap_size / 2) /
1779 						sizeof(struct ql4_chap_table);
1780 	else
1781 		max_chap_entries = MAX_CHAP_ENTRIES_40XX;
1782 
1783 	if (!ha->chap_list) {
1784 		ql4_printk(KERN_ERR, ha, "Do not have CHAP table cache\n");
1785 		return QLA_ERROR;
1786 	}
1787 
1788 	if (!username || !password) {
1789 		ql4_printk(KERN_ERR, ha, "Do not have username and psw\n");
1790 		return QLA_ERROR;
1791 	}
1792 
1793 	mutex_lock(&ha->chap_sem);
1794 	for (i = 0; i < max_chap_entries; i++) {
1795 		chap_table = (struct ql4_chap_table *)ha->chap_list + i;
1796 		if (chap_table->cookie !=
1797 		    __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
1798 			if (i > MAX_RESRV_CHAP_IDX && free_index == -1)
1799 				free_index = i;
1800 			continue;
1801 		}
1802 		if (bidi) {
1803 			if (chap_table->flags & BIT_7)
1804 				continue;
1805 		} else {
1806 			if (chap_table->flags & BIT_6)
1807 				continue;
1808 		}
1809 		if (!strncmp(chap_table->secret, password,
1810 			     MAX_CHAP_SECRET_LEN) &&
1811 		    !strncmp(chap_table->name, username,
1812 			     MAX_CHAP_NAME_LEN)) {
1813 			*chap_index = i;
1814 			found_index = 1;
1815 			break;
1816 		}
1817 	}
1818 
1819 	/* If chap entry is not present and a free index is available then
1820 	 * write the entry in flash
1821 	 */
1822 	if (!found_index && free_index != -1) {
1823 		rval = qla4xxx_set_chap(ha, username, password,
1824 					free_index, bidi);
1825 		if (!rval) {
1826 			*chap_index = free_index;
1827 			found_index = 1;
1828 		}
1829 	}
1830 
1831 	mutex_unlock(&ha->chap_sem);
1832 
1833 	if (found_index)
1834 		return QLA_SUCCESS;
1835 	return QLA_ERROR;
1836 }
1837 
1838 int qla4xxx_conn_close_sess_logout(struct scsi_qla_host *ha,
1839 				   uint16_t fw_ddb_index,
1840 				   uint16_t connection_id,
1841 				   uint16_t option)
1842 {
1843 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1844 	uint32_t mbox_sts[MBOX_REG_COUNT];
1845 	int status = QLA_SUCCESS;
1846 
1847 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1848 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1849 
1850 	mbox_cmd[0] = MBOX_CMD_CONN_CLOSE_SESS_LOGOUT;
1851 	mbox_cmd[1] = fw_ddb_index;
1852 	mbox_cmd[2] = connection_id;
1853 	mbox_cmd[3] = option;
1854 
1855 	status = qla4xxx_mailbox_command(ha, 4, 2, &mbox_cmd[0], &mbox_sts[0]);
1856 	if (status != QLA_SUCCESS) {
1857 		DEBUG2(ql4_printk(KERN_WARNING, ha, "%s: MBOX_CMD_CONN_CLOSE "
1858 				  "option %04x failed w/ status %04X %04X\n",
1859 				  __func__, option, mbox_sts[0], mbox_sts[1]));
1860 	}
1861 	return status;
1862 }
1863 
1864 /**
1865  * qla4_84xx_extend_idc_tmo - Extend IDC Timeout.
1866  * @ha: Pointer to host adapter structure.
1867  * @ext_tmo: idc timeout value
1868  *
1869  * Requests firmware to extend the idc timeout value.
1870  **/
1871 static int qla4_84xx_extend_idc_tmo(struct scsi_qla_host *ha, uint32_t ext_tmo)
1872 {
1873 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1874 	uint32_t mbox_sts[MBOX_REG_COUNT];
1875 	int status;
1876 
1877 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1878 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1879 	ext_tmo &= 0xf;
1880 
1881 	mbox_cmd[0] = MBOX_CMD_IDC_TIME_EXTEND;
1882 	mbox_cmd[1] = ((ha->idc_info.request_desc & 0xfffff0ff) |
1883 		       (ext_tmo << 8));		/* new timeout */
1884 	mbox_cmd[2] = ha->idc_info.info1;
1885 	mbox_cmd[3] = ha->idc_info.info2;
1886 	mbox_cmd[4] = ha->idc_info.info3;
1887 
1888 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, MBOX_REG_COUNT,
1889 					 mbox_cmd, mbox_sts);
1890 	if (status != QLA_SUCCESS) {
1891 		DEBUG2(ql4_printk(KERN_INFO, ha,
1892 				  "scsi%ld: %s: failed status %04X\n",
1893 				  ha->host_no, __func__, mbox_sts[0]));
1894 		return QLA_ERROR;
1895 	} else {
1896 		ql4_printk(KERN_INFO, ha, "%s: IDC timeout extended by %d secs\n",
1897 			   __func__, ext_tmo);
1898 	}
1899 
1900 	return QLA_SUCCESS;
1901 }
1902 
1903 int qla4xxx_disable_acb(struct scsi_qla_host *ha)
1904 {
1905 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1906 	uint32_t mbox_sts[MBOX_REG_COUNT];
1907 	int status = QLA_SUCCESS;
1908 
1909 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1910 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1911 
1912 	mbox_cmd[0] = MBOX_CMD_DISABLE_ACB;
1913 
1914 	status = qla4xxx_mailbox_command(ha, 8, 5, &mbox_cmd[0], &mbox_sts[0]);
1915 	if (status != QLA_SUCCESS) {
1916 		DEBUG2(ql4_printk(KERN_WARNING, ha, "%s: MBOX_CMD_DISABLE_ACB "
1917 				  "failed w/ status %04X %04X %04X", __func__,
1918 				  mbox_sts[0], mbox_sts[1], mbox_sts[2]));
1919 	} else {
1920 		if (is_qla8042(ha) &&
1921 		    test_bit(DPC_POST_IDC_ACK, &ha->dpc_flags) &&
1922 		    (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE)) {
1923 			/*
1924 			 * Disable ACB mailbox command takes time to complete
1925 			 * based on the total number of targets connected.
1926 			 * For 512 targets, it took approximately 5 secs to
1927 			 * complete. Setting the timeout value to 8, with the 3
1928 			 * secs buffer.
1929 			 */
1930 			qla4_84xx_extend_idc_tmo(ha, IDC_EXTEND_TOV);
1931 			if (!wait_for_completion_timeout(&ha->disable_acb_comp,
1932 							 IDC_EXTEND_TOV * HZ)) {
1933 				ql4_printk(KERN_WARNING, ha, "%s: Disable ACB Completion not received\n",
1934 					   __func__);
1935 			}
1936 		}
1937 	}
1938 	return status;
1939 }
1940 
1941 int qla4xxx_get_acb(struct scsi_qla_host *ha, dma_addr_t acb_dma,
1942 		    uint32_t acb_type, uint32_t len)
1943 {
1944 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1945 	uint32_t mbox_sts[MBOX_REG_COUNT];
1946 	int status = QLA_SUCCESS;
1947 
1948 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1949 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1950 
1951 	mbox_cmd[0] = MBOX_CMD_GET_ACB;
1952 	mbox_cmd[1] = acb_type;
1953 	mbox_cmd[2] = LSDW(acb_dma);
1954 	mbox_cmd[3] = MSDW(acb_dma);
1955 	mbox_cmd[4] = len;
1956 
1957 	status = qla4xxx_mailbox_command(ha, 5, 5, &mbox_cmd[0], &mbox_sts[0]);
1958 	if (status != QLA_SUCCESS) {
1959 		DEBUG2(ql4_printk(KERN_WARNING, ha, "%s: MBOX_CMD_GET_ACB "
1960 				  "failed w/ status %04X\n", __func__,
1961 				  mbox_sts[0]));
1962 	}
1963 	return status;
1964 }
1965 
1966 int qla4xxx_set_acb(struct scsi_qla_host *ha, uint32_t *mbox_cmd,
1967 		    uint32_t *mbox_sts, dma_addr_t acb_dma)
1968 {
1969 	int status = QLA_SUCCESS;
1970 
1971 	memset(mbox_cmd, 0, sizeof(mbox_cmd[0]) * MBOX_REG_COUNT);
1972 	memset(mbox_sts, 0, sizeof(mbox_sts[0]) * MBOX_REG_COUNT);
1973 	mbox_cmd[0] = MBOX_CMD_SET_ACB;
1974 	mbox_cmd[1] = 0; /* Primary ACB */
1975 	mbox_cmd[2] = LSDW(acb_dma);
1976 	mbox_cmd[3] = MSDW(acb_dma);
1977 	mbox_cmd[4] = sizeof(struct addr_ctrl_blk);
1978 
1979 	status = qla4xxx_mailbox_command(ha, 5, 5, &mbox_cmd[0], &mbox_sts[0]);
1980 	if (status != QLA_SUCCESS) {
1981 		DEBUG2(ql4_printk(KERN_WARNING, ha,  "%s: MBOX_CMD_SET_ACB "
1982 				  "failed w/ status %04X\n", __func__,
1983 				  mbox_sts[0]));
1984 	}
1985 	return status;
1986 }
1987 
1988 int qla4xxx_set_param_ddbentry(struct scsi_qla_host *ha,
1989 			       struct ddb_entry *ddb_entry,
1990 			       struct iscsi_cls_conn *cls_conn,
1991 			       uint32_t *mbx_sts)
1992 {
1993 	struct dev_db_entry *fw_ddb_entry;
1994 	struct iscsi_conn *conn;
1995 	struct iscsi_session *sess;
1996 	struct qla_conn *qla_conn;
1997 	struct sockaddr *dst_addr;
1998 	dma_addr_t fw_ddb_entry_dma;
1999 	int status = QLA_SUCCESS;
2000 	int rval = 0;
2001 	struct sockaddr_in *addr;
2002 	struct sockaddr_in6 *addr6;
2003 	char *ip;
2004 	uint16_t iscsi_opts = 0;
2005 	uint32_t options = 0;
2006 	uint16_t idx, *ptid;
2007 
2008 	fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2009 					  &fw_ddb_entry_dma, GFP_KERNEL);
2010 	if (!fw_ddb_entry) {
2011 		DEBUG2(ql4_printk(KERN_ERR, ha,
2012 				  "%s: Unable to allocate dma buffer.\n",
2013 				  __func__));
2014 		rval = -ENOMEM;
2015 		goto exit_set_param_no_free;
2016 	}
2017 
2018 	conn = cls_conn->dd_data;
2019 	qla_conn = conn->dd_data;
2020 	sess = conn->session;
2021 	dst_addr = (struct sockaddr *)&qla_conn->qla_ep->dst_addr;
2022 
2023 	if (dst_addr->sa_family == AF_INET6)
2024 		options |= IPV6_DEFAULT_DDB_ENTRY;
2025 
2026 	status = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
2027 	if (status == QLA_ERROR) {
2028 		rval = -EINVAL;
2029 		goto exit_set_param;
2030 	}
2031 
2032 	ptid = (uint16_t *)&fw_ddb_entry->isid[1];
2033 	*ptid = cpu_to_le16((uint16_t)ddb_entry->sess->target_id);
2034 
2035 	DEBUG2(ql4_printk(KERN_INFO, ha, "ISID [%02x%02x%02x%02x%02x%02x]\n",
2036 			  fw_ddb_entry->isid[5], fw_ddb_entry->isid[4],
2037 			  fw_ddb_entry->isid[3], fw_ddb_entry->isid[2],
2038 			  fw_ddb_entry->isid[1], fw_ddb_entry->isid[0]));
2039 
2040 	iscsi_opts = le16_to_cpu(fw_ddb_entry->iscsi_options);
2041 	memset(fw_ddb_entry->iscsi_alias, 0, sizeof(fw_ddb_entry->iscsi_alias));
2042 
2043 	memset(fw_ddb_entry->iscsi_name, 0, sizeof(fw_ddb_entry->iscsi_name));
2044 
2045 	if (sess->targetname != NULL) {
2046 		memcpy(fw_ddb_entry->iscsi_name, sess->targetname,
2047 		       min(strlen(sess->targetname),
2048 		       sizeof(fw_ddb_entry->iscsi_name)));
2049 	}
2050 
2051 	memset(fw_ddb_entry->ip_addr, 0, sizeof(fw_ddb_entry->ip_addr));
2052 	memset(fw_ddb_entry->tgt_addr, 0, sizeof(fw_ddb_entry->tgt_addr));
2053 
2054 	fw_ddb_entry->options =  DDB_OPT_TARGET | DDB_OPT_AUTO_SENDTGTS_DISABLE;
2055 
2056 	if (dst_addr->sa_family == AF_INET) {
2057 		addr = (struct sockaddr_in *)dst_addr;
2058 		ip = (char *)&addr->sin_addr;
2059 		memcpy(fw_ddb_entry->ip_addr, ip, IP_ADDR_LEN);
2060 		fw_ddb_entry->port = cpu_to_le16(ntohs(addr->sin_port));
2061 		DEBUG2(ql4_printk(KERN_INFO, ha,
2062 				  "%s: Destination Address [%pI4]: index [%d]\n",
2063 				   __func__, fw_ddb_entry->ip_addr,
2064 				  ddb_entry->fw_ddb_index));
2065 	} else if (dst_addr->sa_family == AF_INET6) {
2066 		addr6 = (struct sockaddr_in6 *)dst_addr;
2067 		ip = (char *)&addr6->sin6_addr;
2068 		memcpy(fw_ddb_entry->ip_addr, ip, IPv6_ADDR_LEN);
2069 		fw_ddb_entry->port = cpu_to_le16(ntohs(addr6->sin6_port));
2070 		fw_ddb_entry->options |= DDB_OPT_IPV6_DEVICE;
2071 		DEBUG2(ql4_printk(KERN_INFO, ha,
2072 				  "%s: Destination Address [%pI6]: index [%d]\n",
2073 				   __func__, fw_ddb_entry->ip_addr,
2074 				  ddb_entry->fw_ddb_index));
2075 	} else {
2076 		ql4_printk(KERN_ERR, ha,
2077 			   "%s: Failed to get IP Address\n",
2078 			   __func__);
2079 		rval = -EINVAL;
2080 		goto exit_set_param;
2081 	}
2082 
2083 	/* CHAP */
2084 	if (sess->username != NULL && sess->password != NULL) {
2085 		if (strlen(sess->username) && strlen(sess->password)) {
2086 			iscsi_opts |= BIT_7;
2087 
2088 			rval = qla4xxx_get_chap_index(ha, sess->username,
2089 						sess->password,
2090 						LOCAL_CHAP, &idx);
2091 			if (rval)
2092 				goto exit_set_param;
2093 
2094 			fw_ddb_entry->chap_tbl_idx = cpu_to_le16(idx);
2095 		}
2096 	}
2097 
2098 	if (sess->username_in != NULL && sess->password_in != NULL) {
2099 		/* Check if BIDI CHAP */
2100 		if (strlen(sess->username_in) && strlen(sess->password_in)) {
2101 			iscsi_opts |= BIT_4;
2102 
2103 			rval = qla4xxx_get_chap_index(ha, sess->username_in,
2104 						      sess->password_in,
2105 						      BIDI_CHAP, &idx);
2106 			if (rval)
2107 				goto exit_set_param;
2108 		}
2109 	}
2110 
2111 	if (sess->initial_r2t_en)
2112 		iscsi_opts |= BIT_10;
2113 
2114 	if (sess->imm_data_en)
2115 		iscsi_opts |= BIT_11;
2116 
2117 	fw_ddb_entry->iscsi_options = cpu_to_le16(iscsi_opts);
2118 
2119 	if (conn->max_recv_dlength)
2120 		fw_ddb_entry->iscsi_max_rcv_data_seg_len =
2121 		  __constant_cpu_to_le16((conn->max_recv_dlength / BYTE_UNITS));
2122 
2123 	if (sess->max_r2t)
2124 		fw_ddb_entry->iscsi_max_outsnd_r2t = cpu_to_le16(sess->max_r2t);
2125 
2126 	if (sess->first_burst)
2127 		fw_ddb_entry->iscsi_first_burst_len =
2128 		       __constant_cpu_to_le16((sess->first_burst / BYTE_UNITS));
2129 
2130 	if (sess->max_burst)
2131 		fw_ddb_entry->iscsi_max_burst_len =
2132 			__constant_cpu_to_le16((sess->max_burst / BYTE_UNITS));
2133 
2134 	if (sess->time2wait)
2135 		fw_ddb_entry->iscsi_def_time2wait =
2136 			cpu_to_le16(sess->time2wait);
2137 
2138 	if (sess->time2retain)
2139 		fw_ddb_entry->iscsi_def_time2retain =
2140 			cpu_to_le16(sess->time2retain);
2141 
2142 	status = qla4xxx_set_ddb_entry(ha, ddb_entry->fw_ddb_index,
2143 				       fw_ddb_entry_dma, mbx_sts);
2144 
2145 	if (status != QLA_SUCCESS)
2146 		rval = -EINVAL;
2147 exit_set_param:
2148 	dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2149 			  fw_ddb_entry, fw_ddb_entry_dma);
2150 exit_set_param_no_free:
2151 	return rval;
2152 }
2153 
2154 int qla4xxx_get_mgmt_data(struct scsi_qla_host *ha, uint16_t fw_ddb_index,
2155 			  uint16_t stats_size, dma_addr_t stats_dma)
2156 {
2157 	int status = QLA_SUCCESS;
2158 	uint32_t mbox_cmd[MBOX_REG_COUNT];
2159 	uint32_t mbox_sts[MBOX_REG_COUNT];
2160 
2161 	memset(mbox_cmd, 0, sizeof(mbox_cmd[0]) * MBOX_REG_COUNT);
2162 	memset(mbox_sts, 0, sizeof(mbox_sts[0]) * MBOX_REG_COUNT);
2163 	mbox_cmd[0] = MBOX_CMD_GET_MANAGEMENT_DATA;
2164 	mbox_cmd[1] = fw_ddb_index;
2165 	mbox_cmd[2] = LSDW(stats_dma);
2166 	mbox_cmd[3] = MSDW(stats_dma);
2167 	mbox_cmd[4] = stats_size;
2168 
2169 	status = qla4xxx_mailbox_command(ha, 5, 1, &mbox_cmd[0], &mbox_sts[0]);
2170 	if (status != QLA_SUCCESS) {
2171 		DEBUG2(ql4_printk(KERN_WARNING, ha,
2172 				  "%s: MBOX_CMD_GET_MANAGEMENT_DATA "
2173 				  "failed w/ status %04X\n", __func__,
2174 				  mbox_sts[0]));
2175 	}
2176 	return status;
2177 }
2178 
2179 int qla4xxx_get_ip_state(struct scsi_qla_host *ha, uint32_t acb_idx,
2180 			 uint32_t ip_idx, uint32_t *sts)
2181 {
2182 	uint32_t mbox_cmd[MBOX_REG_COUNT];
2183 	uint32_t mbox_sts[MBOX_REG_COUNT];
2184 	int status = QLA_SUCCESS;
2185 
2186 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
2187 	memset(&mbox_sts, 0, sizeof(mbox_sts));
2188 	mbox_cmd[0] = MBOX_CMD_GET_IP_ADDR_STATE;
2189 	mbox_cmd[1] = acb_idx;
2190 	mbox_cmd[2] = ip_idx;
2191 
2192 	status = qla4xxx_mailbox_command(ha, 3, 8, &mbox_cmd[0], &mbox_sts[0]);
2193 	if (status != QLA_SUCCESS) {
2194 		DEBUG2(ql4_printk(KERN_WARNING, ha,  "%s: "
2195 				  "MBOX_CMD_GET_IP_ADDR_STATE failed w/ "
2196 				  "status %04X\n", __func__, mbox_sts[0]));
2197 	}
2198 	memcpy(sts, mbox_sts, sizeof(mbox_sts));
2199 	return status;
2200 }
2201 
2202 int qla4xxx_get_nvram(struct scsi_qla_host *ha, dma_addr_t nvram_dma,
2203 		      uint32_t offset, uint32_t size)
2204 {
2205 	int status = QLA_SUCCESS;
2206 	uint32_t mbox_cmd[MBOX_REG_COUNT];
2207 	uint32_t mbox_sts[MBOX_REG_COUNT];
2208 
2209 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
2210 	memset(&mbox_sts, 0, sizeof(mbox_sts));
2211 
2212 	mbox_cmd[0] = MBOX_CMD_GET_NVRAM;
2213 	mbox_cmd[1] = LSDW(nvram_dma);
2214 	mbox_cmd[2] = MSDW(nvram_dma);
2215 	mbox_cmd[3] = offset;
2216 	mbox_cmd[4] = size;
2217 
2218 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0],
2219 					 &mbox_sts[0]);
2220 	if (status != QLA_SUCCESS) {
2221 		DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
2222 				  "status %04X\n", ha->host_no, __func__,
2223 				  mbox_sts[0]));
2224 	}
2225 	return status;
2226 }
2227 
2228 int qla4xxx_set_nvram(struct scsi_qla_host *ha, dma_addr_t nvram_dma,
2229 		      uint32_t offset, uint32_t size)
2230 {
2231 	int status = QLA_SUCCESS;
2232 	uint32_t mbox_cmd[MBOX_REG_COUNT];
2233 	uint32_t mbox_sts[MBOX_REG_COUNT];
2234 
2235 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
2236 	memset(&mbox_sts, 0, sizeof(mbox_sts));
2237 
2238 	mbox_cmd[0] = MBOX_CMD_SET_NVRAM;
2239 	mbox_cmd[1] = LSDW(nvram_dma);
2240 	mbox_cmd[2] = MSDW(nvram_dma);
2241 	mbox_cmd[3] = offset;
2242 	mbox_cmd[4] = size;
2243 
2244 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0],
2245 					 &mbox_sts[0]);
2246 	if (status != QLA_SUCCESS) {
2247 		DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
2248 				  "status %04X\n", ha->host_no, __func__,
2249 				  mbox_sts[0]));
2250 	}
2251 	return status;
2252 }
2253 
2254 int qla4xxx_restore_factory_defaults(struct scsi_qla_host *ha,
2255 				     uint32_t region, uint32_t field0,
2256 				     uint32_t field1)
2257 {
2258 	int status = QLA_SUCCESS;
2259 	uint32_t mbox_cmd[MBOX_REG_COUNT];
2260 	uint32_t mbox_sts[MBOX_REG_COUNT];
2261 
2262 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
2263 	memset(&mbox_sts, 0, sizeof(mbox_sts));
2264 
2265 	mbox_cmd[0] = MBOX_CMD_RESTORE_FACTORY_DEFAULTS;
2266 	mbox_cmd[3] = region;
2267 	mbox_cmd[4] = field0;
2268 	mbox_cmd[5] = field1;
2269 
2270 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 3, &mbox_cmd[0],
2271 					 &mbox_sts[0]);
2272 	if (status != QLA_SUCCESS) {
2273 		DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
2274 				  "status %04X\n", ha->host_no, __func__,
2275 				  mbox_sts[0]));
2276 	}
2277 	return status;
2278 }
2279 
2280 /**
2281  * qla4_8xxx_set_param - set driver version in firmware.
2282  * @ha: Pointer to host adapter structure.
2283  * @param: Parameter to set i.e driver version
2284  **/
2285 int qla4_8xxx_set_param(struct scsi_qla_host *ha, int param)
2286 {
2287 	uint32_t mbox_cmd[MBOX_REG_COUNT];
2288 	uint32_t mbox_sts[MBOX_REG_COUNT];
2289 	uint32_t status;
2290 
2291 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
2292 	memset(&mbox_sts, 0, sizeof(mbox_sts));
2293 
2294 	mbox_cmd[0] = MBOX_CMD_SET_PARAM;
2295 	if (param == SET_DRVR_VERSION) {
2296 		mbox_cmd[1] = SET_DRVR_VERSION;
2297 		strncpy((char *)&mbox_cmd[2], QLA4XXX_DRIVER_VERSION,
2298 			MAX_DRVR_VER_LEN - 1);
2299 	} else {
2300 		ql4_printk(KERN_ERR, ha, "%s: invalid parameter 0x%x\n",
2301 			   __func__, param);
2302 		status = QLA_ERROR;
2303 		goto exit_set_param;
2304 	}
2305 
2306 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 2, mbox_cmd,
2307 					 mbox_sts);
2308 	if (status == QLA_ERROR)
2309 		ql4_printk(KERN_ERR, ha, "%s: failed status %04X\n",
2310 			   __func__, mbox_sts[0]);
2311 
2312 exit_set_param:
2313 	return status;
2314 }
2315 
2316 /**
2317  * qla4_83xx_post_idc_ack - post IDC ACK
2318  * @ha: Pointer to host adapter structure.
2319  *
2320  * Posts IDC ACK for IDC Request Notification AEN.
2321  **/
2322 int qla4_83xx_post_idc_ack(struct scsi_qla_host *ha)
2323 {
2324 	uint32_t mbox_cmd[MBOX_REG_COUNT];
2325 	uint32_t mbox_sts[MBOX_REG_COUNT];
2326 	int status;
2327 
2328 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
2329 	memset(&mbox_sts, 0, sizeof(mbox_sts));
2330 
2331 	mbox_cmd[0] = MBOX_CMD_IDC_ACK;
2332 	mbox_cmd[1] = ha->idc_info.request_desc;
2333 	mbox_cmd[2] = ha->idc_info.info1;
2334 	mbox_cmd[3] = ha->idc_info.info2;
2335 	mbox_cmd[4] = ha->idc_info.info3;
2336 
2337 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, MBOX_REG_COUNT,
2338 					 mbox_cmd, mbox_sts);
2339 	if (status == QLA_ERROR)
2340 		ql4_printk(KERN_ERR, ha, "%s: failed status %04X\n", __func__,
2341 			   mbox_sts[0]);
2342 	else
2343 	       ql4_printk(KERN_INFO, ha, "%s: IDC ACK posted\n", __func__);
2344 
2345 	return status;
2346 }
2347 
2348 int qla4_84xx_config_acb(struct scsi_qla_host *ha, int acb_config)
2349 {
2350 	uint32_t mbox_cmd[MBOX_REG_COUNT];
2351 	uint32_t mbox_sts[MBOX_REG_COUNT];
2352 	struct addr_ctrl_blk *acb = NULL;
2353 	uint32_t acb_len = sizeof(struct addr_ctrl_blk);
2354 	int rval = QLA_SUCCESS;
2355 	dma_addr_t acb_dma;
2356 
2357 	acb = dma_alloc_coherent(&ha->pdev->dev,
2358 				 sizeof(struct addr_ctrl_blk),
2359 				 &acb_dma, GFP_KERNEL);
2360 	if (!acb) {
2361 		ql4_printk(KERN_ERR, ha, "%s: Unable to alloc acb\n", __func__);
2362 		rval = QLA_ERROR;
2363 		goto exit_config_acb;
2364 	}
2365 	memset(acb, 0, acb_len);
2366 
2367 	switch (acb_config) {
2368 	case ACB_CONFIG_DISABLE:
2369 		rval = qla4xxx_get_acb(ha, acb_dma, 0, acb_len);
2370 		if (rval != QLA_SUCCESS)
2371 			goto exit_free_acb;
2372 
2373 		rval = qla4xxx_disable_acb(ha);
2374 		if (rval != QLA_SUCCESS)
2375 			goto exit_free_acb;
2376 
2377 		if (!ha->saved_acb)
2378 			ha->saved_acb = kzalloc(acb_len, GFP_KERNEL);
2379 
2380 		if (!ha->saved_acb) {
2381 			ql4_printk(KERN_ERR, ha, "%s: Unable to alloc acb\n",
2382 				   __func__);
2383 			rval = QLA_ERROR;
2384 			goto exit_free_acb;
2385 		}
2386 		memcpy(ha->saved_acb, acb, acb_len);
2387 		break;
2388 	case ACB_CONFIG_SET:
2389 
2390 		if (!ha->saved_acb) {
2391 			ql4_printk(KERN_ERR, ha, "%s: Can't set ACB, Saved ACB not available\n",
2392 				   __func__);
2393 			rval = QLA_ERROR;
2394 			goto exit_free_acb;
2395 		}
2396 
2397 		memcpy(acb, ha->saved_acb, acb_len);
2398 
2399 		rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], acb_dma);
2400 		if (rval != QLA_SUCCESS)
2401 			goto exit_free_acb;
2402 
2403 		break;
2404 	default:
2405 		ql4_printk(KERN_ERR, ha, "%s: Invalid ACB Configuration\n",
2406 			   __func__);
2407 	}
2408 
2409 exit_free_acb:
2410 	dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk), acb,
2411 			  acb_dma);
2412 exit_config_acb:
2413 	if ((acb_config == ACB_CONFIG_SET) && ha->saved_acb) {
2414 		kfree(ha->saved_acb);
2415 		ha->saved_acb = NULL;
2416 	}
2417 	DEBUG2(ql4_printk(KERN_INFO, ha,
2418 			  "%s %s\n", __func__,
2419 			  rval == QLA_SUCCESS ? "SUCCEEDED" : "FAILED"));
2420 	return rval;
2421 }
2422 
2423 int qla4_83xx_get_port_config(struct scsi_qla_host *ha, uint32_t *config)
2424 {
2425 	uint32_t mbox_cmd[MBOX_REG_COUNT];
2426 	uint32_t mbox_sts[MBOX_REG_COUNT];
2427 	int status;
2428 
2429 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
2430 	memset(&mbox_sts, 0, sizeof(mbox_sts));
2431 
2432 	mbox_cmd[0] = MBOX_CMD_GET_PORT_CONFIG;
2433 
2434 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, MBOX_REG_COUNT,
2435 					 mbox_cmd, mbox_sts);
2436 	if (status == QLA_SUCCESS)
2437 		*config = mbox_sts[1];
2438 	else
2439 		ql4_printk(KERN_ERR, ha, "%s: failed status %04X\n", __func__,
2440 			   mbox_sts[0]);
2441 
2442 	return status;
2443 }
2444 
2445 int qla4_83xx_set_port_config(struct scsi_qla_host *ha, uint32_t *config)
2446 {
2447 	uint32_t mbox_cmd[MBOX_REG_COUNT];
2448 	uint32_t mbox_sts[MBOX_REG_COUNT];
2449 	int status;
2450 
2451 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
2452 	memset(&mbox_sts, 0, sizeof(mbox_sts));
2453 
2454 	mbox_cmd[0] = MBOX_CMD_SET_PORT_CONFIG;
2455 	mbox_cmd[1] = *config;
2456 
2457 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, MBOX_REG_COUNT,
2458 				mbox_cmd, mbox_sts);
2459 	if (status != QLA_SUCCESS)
2460 		ql4_printk(KERN_ERR, ha, "%s: failed status %04X\n", __func__,
2461 			   mbox_sts[0]);
2462 
2463 	return status;
2464 }
2465