xref: /openbmc/linux/drivers/scsi/qla4xxx/ql4_mbx.c (revision 068ac0db)
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 
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 		goto exit_init_fw_cb;
644 	}
645 
646 	/* Fill in the request and response queue information. */
647 	init_fw_cb->rqq_consumer_idx = cpu_to_le16(ha->request_out);
648 	init_fw_cb->compq_producer_idx = cpu_to_le16(ha->response_in);
649 	init_fw_cb->rqq_len = __constant_cpu_to_le16(REQUEST_QUEUE_DEPTH);
650 	init_fw_cb->compq_len = __constant_cpu_to_le16(RESPONSE_QUEUE_DEPTH);
651 	init_fw_cb->rqq_addr_lo = cpu_to_le32(LSDW(ha->request_dma));
652 	init_fw_cb->rqq_addr_hi = cpu_to_le32(MSDW(ha->request_dma));
653 	init_fw_cb->compq_addr_lo = cpu_to_le32(LSDW(ha->response_dma));
654 	init_fw_cb->compq_addr_hi = cpu_to_le32(MSDW(ha->response_dma));
655 	init_fw_cb->shdwreg_addr_lo = cpu_to_le32(LSDW(ha->shadow_regs_dma));
656 	init_fw_cb->shdwreg_addr_hi = cpu_to_le32(MSDW(ha->shadow_regs_dma));
657 
658 	/* Set up required options. */
659 	init_fw_cb->fw_options |=
660 		__constant_cpu_to_le16(FWOPT_SESSION_MODE |
661 				       FWOPT_INITIATOR_MODE);
662 
663 	if (is_qla80XX(ha))
664 		init_fw_cb->fw_options |=
665 		    __constant_cpu_to_le16(FWOPT_ENABLE_CRBDB);
666 
667 	init_fw_cb->fw_options &= __constant_cpu_to_le16(~FWOPT_TARGET_MODE);
668 
669 	init_fw_cb->add_fw_options = 0;
670 	init_fw_cb->add_fw_options |=
671 			__constant_cpu_to_le16(ADFWOPT_SERIALIZE_TASK_MGMT);
672 	init_fw_cb->add_fw_options |=
673 			__constant_cpu_to_le16(ADFWOPT_AUTOCONN_DISABLE);
674 
675 	if (qla4xxx_set_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)
676 		!= QLA_SUCCESS) {
677 		DEBUG2(printk(KERN_WARNING
678 			      "scsi%ld: %s: Failed to set init_fw_ctrl_blk\n",
679 			      ha->host_no, __func__));
680 		goto exit_init_fw_cb;
681 	}
682 
683 	if (qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0],
684 		init_fw_cb, init_fw_cb_dma) != QLA_SUCCESS) {
685 		DEBUG2(printk("scsi%ld: %s: Failed to update local ifcb\n",
686 				ha->host_no, __func__));
687 		goto exit_init_fw_cb;
688 	}
689 	status = QLA_SUCCESS;
690 
691 exit_init_fw_cb:
692 	dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
693 				init_fw_cb, init_fw_cb_dma);
694 exit_init_fw_cb_no_free:
695 	return status;
696 }
697 
698 /**
699  * qla4xxx_get_dhcp_ip_address - gets HBA ip address via DHCP
700  * @ha: Pointer to host adapter structure.
701  **/
702 int qla4xxx_get_dhcp_ip_address(struct scsi_qla_host * ha)
703 {
704 	struct addr_ctrl_blk *init_fw_cb;
705 	dma_addr_t init_fw_cb_dma;
706 	uint32_t mbox_cmd[MBOX_REG_COUNT];
707 	uint32_t mbox_sts[MBOX_REG_COUNT];
708 
709 	init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
710 					sizeof(struct addr_ctrl_blk),
711 					&init_fw_cb_dma, GFP_KERNEL);
712 	if (init_fw_cb == NULL) {
713 		printk("scsi%ld: %s: Unable to alloc init_cb\n", ha->host_no,
714 		       __func__);
715 		return QLA_ERROR;
716 	}
717 
718 	/* Get Initialize Firmware Control Block. */
719 	if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma) !=
720 	    QLA_SUCCESS) {
721 		DEBUG2(printk("scsi%ld: %s: Failed to get init_fw_ctrl_blk\n",
722 			      ha->host_no, __func__));
723 		dma_free_coherent(&ha->pdev->dev,
724 				  sizeof(struct addr_ctrl_blk),
725 				  init_fw_cb, init_fw_cb_dma);
726 		return QLA_ERROR;
727 	}
728 
729 	/* Save IP Address. */
730 	qla4xxx_update_local_ip(ha, init_fw_cb);
731 	dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
732 				init_fw_cb, init_fw_cb_dma);
733 
734 	return QLA_SUCCESS;
735 }
736 
737 /**
738  * qla4xxx_get_firmware_state - gets firmware state of HBA
739  * @ha: Pointer to host adapter structure.
740  **/
741 int qla4xxx_get_firmware_state(struct scsi_qla_host * ha)
742 {
743 	uint32_t mbox_cmd[MBOX_REG_COUNT];
744 	uint32_t mbox_sts[MBOX_REG_COUNT];
745 
746 	/* Get firmware version */
747 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
748 	memset(&mbox_sts, 0, sizeof(mbox_sts));
749 
750 	mbox_cmd[0] = MBOX_CMD_GET_FW_STATE;
751 
752 	if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 4, &mbox_cmd[0], &mbox_sts[0]) !=
753 	    QLA_SUCCESS) {
754 		DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_FW_STATE failed w/ "
755 			      "status %04X\n", ha->host_no, __func__,
756 			      mbox_sts[0]));
757 		return QLA_ERROR;
758 	}
759 	ha->firmware_state = mbox_sts[1];
760 	ha->board_id = mbox_sts[2];
761 	ha->addl_fw_state = mbox_sts[3];
762 	DEBUG2(printk("scsi%ld: %s firmware_state=0x%x\n",
763 		      ha->host_no, __func__, ha->firmware_state);)
764 
765 	return QLA_SUCCESS;
766 }
767 
768 /**
769  * qla4xxx_get_firmware_status - retrieves firmware status
770  * @ha: Pointer to host adapter structure.
771  **/
772 int qla4xxx_get_firmware_status(struct scsi_qla_host * ha)
773 {
774 	uint32_t mbox_cmd[MBOX_REG_COUNT];
775 	uint32_t mbox_sts[MBOX_REG_COUNT];
776 
777 	/* Get firmware version */
778 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
779 	memset(&mbox_sts, 0, sizeof(mbox_sts));
780 
781 	mbox_cmd[0] = MBOX_CMD_GET_FW_STATUS;
782 
783 	if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 3, &mbox_cmd[0], &mbox_sts[0]) !=
784 	    QLA_SUCCESS) {
785 		DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_FW_STATUS failed w/ "
786 			      "status %04X\n", ha->host_no, __func__,
787 			      mbox_sts[0]));
788 		return QLA_ERROR;
789 	}
790 
791 	/* High-water mark of IOCBs */
792 	ha->iocb_hiwat = mbox_sts[2];
793 	DEBUG2(ql4_printk(KERN_INFO, ha,
794 			  "%s: firmware IOCBs available = %d\n", __func__,
795 			  ha->iocb_hiwat));
796 
797 	if (ha->iocb_hiwat > IOCB_HIWAT_CUSHION)
798 		ha->iocb_hiwat -= IOCB_HIWAT_CUSHION;
799 
800 	/* Ideally, we should not enter this code, as the # of firmware
801 	 * IOCBs is hard-coded in the firmware. We set a default
802 	 * iocb_hiwat here just in case */
803 	if (ha->iocb_hiwat == 0) {
804 		ha->iocb_hiwat = REQUEST_QUEUE_DEPTH / 4;
805 		DEBUG2(ql4_printk(KERN_WARNING, ha,
806 				  "%s: Setting IOCB's to = %d\n", __func__,
807 				  ha->iocb_hiwat));
808 	}
809 
810 	return QLA_SUCCESS;
811 }
812 
813 /**
814  * qla4xxx_get_fwddb_entry - retrieves firmware ddb entry
815  * @ha: Pointer to host adapter structure.
816  * @fw_ddb_index: Firmware's device database index
817  * @fw_ddb_entry: Pointer to firmware's device database entry structure
818  * @num_valid_ddb_entries: Pointer to number of valid ddb entries
819  * @next_ddb_index: Pointer to next valid device database index
820  * @fw_ddb_device_state: Pointer to device state
821  **/
822 int qla4xxx_get_fwddb_entry(struct scsi_qla_host *ha,
823 			    uint16_t fw_ddb_index,
824 			    struct dev_db_entry *fw_ddb_entry,
825 			    dma_addr_t fw_ddb_entry_dma,
826 			    uint32_t *num_valid_ddb_entries,
827 			    uint32_t *next_ddb_index,
828 			    uint32_t *fw_ddb_device_state,
829 			    uint32_t *conn_err_detail,
830 			    uint16_t *tcp_source_port_num,
831 			    uint16_t *connection_id)
832 {
833 	int status = QLA_ERROR;
834 	uint16_t options;
835 	uint32_t mbox_cmd[MBOX_REG_COUNT];
836 	uint32_t mbox_sts[MBOX_REG_COUNT];
837 
838 	/* Make sure the device index is valid */
839 	if (fw_ddb_index >= MAX_DDB_ENTRIES) {
840 		DEBUG2(printk("scsi%ld: %s: ddb [%d] out of range.\n",
841 			      ha->host_no, __func__, fw_ddb_index));
842 		goto exit_get_fwddb;
843 	}
844 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
845 	memset(&mbox_sts, 0, sizeof(mbox_sts));
846 	if (fw_ddb_entry)
847 		memset(fw_ddb_entry, 0, sizeof(struct dev_db_entry));
848 
849 	mbox_cmd[0] = MBOX_CMD_GET_DATABASE_ENTRY;
850 	mbox_cmd[1] = (uint32_t) fw_ddb_index;
851 	mbox_cmd[2] = LSDW(fw_ddb_entry_dma);
852 	mbox_cmd[3] = MSDW(fw_ddb_entry_dma);
853 	mbox_cmd[4] = sizeof(struct dev_db_entry);
854 
855 	if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 7, &mbox_cmd[0], &mbox_sts[0]) ==
856 	    QLA_ERROR) {
857 		DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_DATABASE_ENTRY failed"
858 			      " with status 0x%04X\n", ha->host_no, __func__,
859 			      mbox_sts[0]));
860 		goto exit_get_fwddb;
861 	}
862 	if (fw_ddb_index != mbox_sts[1]) {
863 		DEBUG2(printk("scsi%ld: %s: ddb mismatch [%d] != [%d].\n",
864 			      ha->host_no, __func__, fw_ddb_index,
865 			      mbox_sts[1]));
866 		goto exit_get_fwddb;
867 	}
868 	if (fw_ddb_entry) {
869 		options = le16_to_cpu(fw_ddb_entry->options);
870 		if (options & DDB_OPT_IPV6_DEVICE) {
871 			ql4_printk(KERN_INFO, ha, "%s: DDB[%d] MB0 %04x Tot %d "
872 				"Next %d State %04x ConnErr %08x %pI6 "
873 				":%04d \"%s\"\n", __func__, fw_ddb_index,
874 				mbox_sts[0], mbox_sts[2], mbox_sts[3],
875 				mbox_sts[4], mbox_sts[5],
876 				fw_ddb_entry->ip_addr,
877 				le16_to_cpu(fw_ddb_entry->port),
878 				fw_ddb_entry->iscsi_name);
879 		} else {
880 			ql4_printk(KERN_INFO, ha, "%s: DDB[%d] MB0 %04x Tot %d "
881 				"Next %d State %04x ConnErr %08x %pI4 "
882 				":%04d \"%s\"\n", __func__, fw_ddb_index,
883 				mbox_sts[0], mbox_sts[2], mbox_sts[3],
884 				mbox_sts[4], mbox_sts[5],
885 				fw_ddb_entry->ip_addr,
886 				le16_to_cpu(fw_ddb_entry->port),
887 				fw_ddb_entry->iscsi_name);
888 		}
889 	}
890 	if (num_valid_ddb_entries)
891 		*num_valid_ddb_entries = mbox_sts[2];
892 	if (next_ddb_index)
893 		*next_ddb_index = mbox_sts[3];
894 	if (fw_ddb_device_state)
895 		*fw_ddb_device_state = mbox_sts[4];
896 
897 	/*
898 	 * RA: This mailbox has been changed to pass connection error and
899 	 * details.  Its true for ISP4010 as per Version E - Not sure when it
900 	 * was changed.	 Get the time2wait from the fw_dd_entry field :
901 	 * default_time2wait which we call it as minTime2Wait DEV_DB_ENTRY
902 	 * struct.
903 	 */
904 	if (conn_err_detail)
905 		*conn_err_detail = mbox_sts[5];
906 	if (tcp_source_port_num)
907 		*tcp_source_port_num = (uint16_t) (mbox_sts[6] >> 16);
908 	if (connection_id)
909 		*connection_id = (uint16_t) mbox_sts[6] & 0x00FF;
910 	status = QLA_SUCCESS;
911 
912 exit_get_fwddb:
913 	return status;
914 }
915 
916 int qla4xxx_conn_open(struct scsi_qla_host *ha, uint16_t fw_ddb_index)
917 {
918 	uint32_t mbox_cmd[MBOX_REG_COUNT];
919 	uint32_t mbox_sts[MBOX_REG_COUNT];
920 	int status;
921 
922 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
923 	memset(&mbox_sts, 0, sizeof(mbox_sts));
924 
925 	mbox_cmd[0] = MBOX_CMD_CONN_OPEN;
926 	mbox_cmd[1] = fw_ddb_index;
927 
928 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 2, &mbox_cmd[0],
929 					 &mbox_sts[0]);
930 	DEBUG2(ql4_printk(KERN_INFO, ha,
931 			  "%s: status = %d mbx0 = 0x%x mbx1 = 0x%x\n",
932 			  __func__, status, mbox_sts[0], mbox_sts[1]));
933 	return status;
934 }
935 
936 /**
937  * qla4xxx_set_fwddb_entry - sets a ddb entry.
938  * @ha: Pointer to host adapter structure.
939  * @fw_ddb_index: Firmware's device database index
940  * @fw_ddb_entry_dma: dma address of ddb entry
941  * @mbx_sts: mailbox 0 to be returned or NULL
942  *
943  * This routine initializes or updates the adapter's device database
944  * entry for the specified device.
945  **/
946 int qla4xxx_set_ddb_entry(struct scsi_qla_host * ha, uint16_t fw_ddb_index,
947 			  dma_addr_t fw_ddb_entry_dma, uint32_t *mbx_sts)
948 {
949 	uint32_t mbox_cmd[MBOX_REG_COUNT];
950 	uint32_t mbox_sts[MBOX_REG_COUNT];
951 	int status;
952 
953 	/* Do not wait for completion. The firmware will send us an
954 	 * ASTS_DATABASE_CHANGED (0x8014) to notify us of the login status.
955 	 */
956 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
957 	memset(&mbox_sts, 0, sizeof(mbox_sts));
958 
959 	mbox_cmd[0] = MBOX_CMD_SET_DATABASE_ENTRY;
960 	mbox_cmd[1] = (uint32_t) fw_ddb_index;
961 	mbox_cmd[2] = LSDW(fw_ddb_entry_dma);
962 	mbox_cmd[3] = MSDW(fw_ddb_entry_dma);
963 	mbox_cmd[4] = sizeof(struct dev_db_entry);
964 
965 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0],
966 					 &mbox_sts[0]);
967 	if (mbx_sts)
968 		*mbx_sts = mbox_sts[0];
969 	DEBUG2(printk("scsi%ld: %s: status=%d mbx0=0x%x mbx4=0x%x\n",
970 	    ha->host_no, __func__, status, mbox_sts[0], mbox_sts[4]);)
971 
972 	return status;
973 }
974 
975 int qla4xxx_session_logout_ddb(struct scsi_qla_host *ha,
976 			       struct ddb_entry *ddb_entry, int options)
977 {
978 	int status;
979 	uint32_t mbox_cmd[MBOX_REG_COUNT];
980 	uint32_t mbox_sts[MBOX_REG_COUNT];
981 
982 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
983 	memset(&mbox_sts, 0, sizeof(mbox_sts));
984 
985 	mbox_cmd[0] = MBOX_CMD_CONN_CLOSE_SESS_LOGOUT;
986 	mbox_cmd[1] = ddb_entry->fw_ddb_index;
987 	mbox_cmd[3] = options;
988 
989 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 2, &mbox_cmd[0],
990 					 &mbox_sts[0]);
991 	if (status != QLA_SUCCESS) {
992 		DEBUG2(ql4_printk(KERN_INFO, ha,
993 				  "%s: MBOX_CMD_CONN_CLOSE_SESS_LOGOUT "
994 				  "failed sts %04X %04X", __func__,
995 				  mbox_sts[0], mbox_sts[1]));
996 		if ((mbox_sts[0] == MBOX_STS_COMMAND_ERROR) &&
997 		    (mbox_sts[1] == DDB_NOT_LOGGED_IN)) {
998 			set_bit(DDB_CONN_CLOSE_FAILURE, &ddb_entry->flags);
999 		}
1000 	}
1001 
1002 	return status;
1003 }
1004 
1005 /**
1006  * qla4xxx_get_crash_record - retrieves crash record.
1007  * @ha: Pointer to host adapter structure.
1008  *
1009  * This routine retrieves a crash record from the QLA4010 after an 8002h aen.
1010  **/
1011 void qla4xxx_get_crash_record(struct scsi_qla_host * ha)
1012 {
1013 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1014 	uint32_t mbox_sts[MBOX_REG_COUNT];
1015 	struct crash_record *crash_record = NULL;
1016 	dma_addr_t crash_record_dma = 0;
1017 	uint32_t crash_record_size = 0;
1018 
1019 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1020 	memset(&mbox_sts, 0, sizeof(mbox_cmd));
1021 
1022 	/* Get size of crash record. */
1023 	mbox_cmd[0] = MBOX_CMD_GET_CRASH_RECORD;
1024 
1025 	if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
1026 	    QLA_SUCCESS) {
1027 		DEBUG2(printk("scsi%ld: %s: ERROR: Unable to retrieve size!\n",
1028 			      ha->host_no, __func__));
1029 		goto exit_get_crash_record;
1030 	}
1031 	crash_record_size = mbox_sts[4];
1032 	if (crash_record_size == 0) {
1033 		DEBUG2(printk("scsi%ld: %s: ERROR: Crash record size is 0!\n",
1034 			      ha->host_no, __func__));
1035 		goto exit_get_crash_record;
1036 	}
1037 
1038 	/* Alloc Memory for Crash Record. */
1039 	crash_record = dma_alloc_coherent(&ha->pdev->dev, crash_record_size,
1040 					  &crash_record_dma, GFP_KERNEL);
1041 	if (crash_record == NULL)
1042 		goto exit_get_crash_record;
1043 
1044 	/* Get Crash Record. */
1045 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1046 	memset(&mbox_sts, 0, sizeof(mbox_cmd));
1047 
1048 	mbox_cmd[0] = MBOX_CMD_GET_CRASH_RECORD;
1049 	mbox_cmd[2] = LSDW(crash_record_dma);
1050 	mbox_cmd[3] = MSDW(crash_record_dma);
1051 	mbox_cmd[4] = crash_record_size;
1052 
1053 	if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
1054 	    QLA_SUCCESS)
1055 		goto exit_get_crash_record;
1056 
1057 	/* Dump Crash Record. */
1058 
1059 exit_get_crash_record:
1060 	if (crash_record)
1061 		dma_free_coherent(&ha->pdev->dev, crash_record_size,
1062 				  crash_record, crash_record_dma);
1063 }
1064 
1065 /**
1066  * qla4xxx_get_conn_event_log - retrieves connection event log
1067  * @ha: Pointer to host adapter structure.
1068  **/
1069 void qla4xxx_get_conn_event_log(struct scsi_qla_host * ha)
1070 {
1071 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1072 	uint32_t mbox_sts[MBOX_REG_COUNT];
1073 	struct conn_event_log_entry *event_log = NULL;
1074 	dma_addr_t event_log_dma = 0;
1075 	uint32_t event_log_size = 0;
1076 	uint32_t num_valid_entries;
1077 	uint32_t      oldest_entry = 0;
1078 	uint32_t	max_event_log_entries;
1079 	uint8_t		i;
1080 
1081 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1082 	memset(&mbox_sts, 0, sizeof(mbox_cmd));
1083 
1084 	/* Get size of crash record. */
1085 	mbox_cmd[0] = MBOX_CMD_GET_CONN_EVENT_LOG;
1086 
1087 	if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
1088 	    QLA_SUCCESS)
1089 		goto exit_get_event_log;
1090 
1091 	event_log_size = mbox_sts[4];
1092 	if (event_log_size == 0)
1093 		goto exit_get_event_log;
1094 
1095 	/* Alloc Memory for Crash Record. */
1096 	event_log = dma_alloc_coherent(&ha->pdev->dev, event_log_size,
1097 				       &event_log_dma, GFP_KERNEL);
1098 	if (event_log == NULL)
1099 		goto exit_get_event_log;
1100 
1101 	/* Get Crash Record. */
1102 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1103 	memset(&mbox_sts, 0, sizeof(mbox_cmd));
1104 
1105 	mbox_cmd[0] = MBOX_CMD_GET_CONN_EVENT_LOG;
1106 	mbox_cmd[2] = LSDW(event_log_dma);
1107 	mbox_cmd[3] = MSDW(event_log_dma);
1108 
1109 	if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0], &mbox_sts[0]) !=
1110 	    QLA_SUCCESS) {
1111 		DEBUG2(printk("scsi%ld: %s: ERROR: Unable to retrieve event "
1112 			      "log!\n", ha->host_no, __func__));
1113 		goto exit_get_event_log;
1114 	}
1115 
1116 	/* Dump Event Log. */
1117 	num_valid_entries = mbox_sts[1];
1118 
1119 	max_event_log_entries = event_log_size /
1120 		sizeof(struct conn_event_log_entry);
1121 
1122 	if (num_valid_entries > max_event_log_entries)
1123 		oldest_entry = num_valid_entries % max_event_log_entries;
1124 
1125 	DEBUG3(printk("scsi%ld: Connection Event Log Dump (%d entries):\n",
1126 		      ha->host_no, num_valid_entries));
1127 
1128 	if (ql4xextended_error_logging == 3) {
1129 		if (oldest_entry == 0) {
1130 			/* Circular Buffer has not wrapped around */
1131 			for (i=0; i < num_valid_entries; i++) {
1132 				qla4xxx_dump_buffer((uint8_t *)event_log+
1133 						    (i*sizeof(*event_log)),
1134 						    sizeof(*event_log));
1135 			}
1136 		}
1137 		else {
1138 			/* Circular Buffer has wrapped around -
1139 			 * display accordingly*/
1140 			for (i=oldest_entry; i < max_event_log_entries; i++) {
1141 				qla4xxx_dump_buffer((uint8_t *)event_log+
1142 						    (i*sizeof(*event_log)),
1143 						    sizeof(*event_log));
1144 			}
1145 			for (i=0; i < oldest_entry; i++) {
1146 				qla4xxx_dump_buffer((uint8_t *)event_log+
1147 						    (i*sizeof(*event_log)),
1148 						    sizeof(*event_log));
1149 			}
1150 		}
1151 	}
1152 
1153 exit_get_event_log:
1154 	if (event_log)
1155 		dma_free_coherent(&ha->pdev->dev, event_log_size, event_log,
1156 				  event_log_dma);
1157 }
1158 
1159 /**
1160  * qla4xxx_abort_task - issues Abort Task
1161  * @ha: Pointer to host adapter structure.
1162  * @srb: Pointer to srb entry
1163  *
1164  * This routine performs a LUN RESET on the specified target/lun.
1165  * The caller must ensure that the ddb_entry and lun_entry pointers
1166  * are valid before calling this routine.
1167  **/
1168 int qla4xxx_abort_task(struct scsi_qla_host *ha, struct srb *srb)
1169 {
1170 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1171 	uint32_t mbox_sts[MBOX_REG_COUNT];
1172 	struct scsi_cmnd *cmd = srb->cmd;
1173 	int status = QLA_SUCCESS;
1174 	unsigned long flags = 0;
1175 	uint32_t index;
1176 
1177 	/*
1178 	 * Send abort task command to ISP, so that the ISP will return
1179 	 * request with ABORT status
1180 	 */
1181 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1182 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1183 
1184 	spin_lock_irqsave(&ha->hardware_lock, flags);
1185 	index = (unsigned long)(unsigned char *)cmd->host_scribble;
1186 	spin_unlock_irqrestore(&ha->hardware_lock, flags);
1187 
1188 	/* Firmware already posted completion on response queue */
1189 	if (index == MAX_SRBS)
1190 		return status;
1191 
1192 	mbox_cmd[0] = MBOX_CMD_ABORT_TASK;
1193 	mbox_cmd[1] = srb->ddb->fw_ddb_index;
1194 	mbox_cmd[2] = index;
1195 	/* Immediate Command Enable */
1196 	mbox_cmd[5] = 0x01;
1197 
1198 	qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 5, &mbox_cmd[0],
1199 	    &mbox_sts[0]);
1200 	if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE) {
1201 		status = QLA_ERROR;
1202 
1203 		DEBUG2(printk(KERN_WARNING "scsi%ld:%d:%llu: abort task FAILED: "
1204 		    "mbx0=%04X, mb1=%04X, mb2=%04X, mb3=%04X, mb4=%04X\n",
1205 		    ha->host_no, cmd->device->id, cmd->device->lun, mbox_sts[0],
1206 		    mbox_sts[1], mbox_sts[2], mbox_sts[3], mbox_sts[4]));
1207 	}
1208 
1209 	return status;
1210 }
1211 
1212 /**
1213  * qla4xxx_reset_lun - issues LUN Reset
1214  * @ha: Pointer to host adapter structure.
1215  * @ddb_entry: Pointer to device database entry
1216  * @lun: lun number
1217  *
1218  * This routine performs a LUN RESET on the specified target/lun.
1219  * The caller must ensure that the ddb_entry and lun_entry pointers
1220  * are valid before calling this routine.
1221  **/
1222 int qla4xxx_reset_lun(struct scsi_qla_host * ha, struct ddb_entry * ddb_entry,
1223 		      uint64_t lun)
1224 {
1225 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1226 	uint32_t mbox_sts[MBOX_REG_COUNT];
1227 	uint32_t scsi_lun[2];
1228 	int status = QLA_SUCCESS;
1229 
1230 	DEBUG2(printk("scsi%ld:%d:%llu: lun reset issued\n", ha->host_no,
1231 		      ddb_entry->fw_ddb_index, lun));
1232 
1233 	/*
1234 	 * Send lun reset command to ISP, so that the ISP will return all
1235 	 * outstanding requests with RESET status
1236 	 */
1237 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1238 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1239 	int_to_scsilun(lun, (struct scsi_lun *) scsi_lun);
1240 
1241 	mbox_cmd[0] = MBOX_CMD_LUN_RESET;
1242 	mbox_cmd[1] = ddb_entry->fw_ddb_index;
1243 	/* FW expects LUN bytes 0-3 in Incoming Mailbox 2
1244 	 * (LUN byte 0 is LSByte, byte 3 is MSByte) */
1245 	mbox_cmd[2] = cpu_to_le32(scsi_lun[0]);
1246 	/* FW expects LUN bytes 4-7 in Incoming Mailbox 3
1247 	 * (LUN byte 4 is LSByte, byte 7 is MSByte) */
1248 	mbox_cmd[3] = cpu_to_le32(scsi_lun[1]);
1249 	mbox_cmd[5] = 0x01;	/* Immediate Command Enable */
1250 
1251 	qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0], &mbox_sts[0]);
1252 	if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE &&
1253 	    mbox_sts[0] != MBOX_STS_COMMAND_ERROR)
1254 		status = QLA_ERROR;
1255 
1256 	return status;
1257 }
1258 
1259 /**
1260  * qla4xxx_reset_target - issues target Reset
1261  * @ha: Pointer to host adapter structure.
1262  * @db_entry: Pointer to device database entry
1263  * @un_entry: Pointer to lun entry structure
1264  *
1265  * This routine performs a TARGET RESET on the specified target.
1266  * The caller must ensure that the ddb_entry pointers
1267  * are valid before calling this routine.
1268  **/
1269 int qla4xxx_reset_target(struct scsi_qla_host *ha,
1270 			 struct ddb_entry *ddb_entry)
1271 {
1272 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1273 	uint32_t mbox_sts[MBOX_REG_COUNT];
1274 	int status = QLA_SUCCESS;
1275 
1276 	DEBUG2(printk("scsi%ld:%d: target reset issued\n", ha->host_no,
1277 		      ddb_entry->fw_ddb_index));
1278 
1279 	/*
1280 	 * Send target reset command to ISP, so that the ISP will return all
1281 	 * outstanding requests with RESET status
1282 	 */
1283 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1284 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1285 
1286 	mbox_cmd[0] = MBOX_CMD_TARGET_WARM_RESET;
1287 	mbox_cmd[1] = ddb_entry->fw_ddb_index;
1288 	mbox_cmd[5] = 0x01;	/* Immediate Command Enable */
1289 
1290 	qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0],
1291 				&mbox_sts[0]);
1292 	if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE &&
1293 	    mbox_sts[0] != MBOX_STS_COMMAND_ERROR)
1294 		status = QLA_ERROR;
1295 
1296 	return status;
1297 }
1298 
1299 int qla4xxx_get_flash(struct scsi_qla_host * ha, dma_addr_t dma_addr,
1300 		      uint32_t offset, uint32_t len)
1301 {
1302 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1303 	uint32_t mbox_sts[MBOX_REG_COUNT];
1304 
1305 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1306 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1307 
1308 	mbox_cmd[0] = MBOX_CMD_READ_FLASH;
1309 	mbox_cmd[1] = LSDW(dma_addr);
1310 	mbox_cmd[2] = MSDW(dma_addr);
1311 	mbox_cmd[3] = offset;
1312 	mbox_cmd[4] = len;
1313 
1314 	if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 2, &mbox_cmd[0], &mbox_sts[0]) !=
1315 	    QLA_SUCCESS) {
1316 		DEBUG2(printk("scsi%ld: %s: MBOX_CMD_READ_FLASH, failed w/ "
1317 		    "status %04X %04X, offset %08x, len %08x\n", ha->host_no,
1318 		    __func__, mbox_sts[0], mbox_sts[1], offset, len));
1319 		return QLA_ERROR;
1320 	}
1321 	return QLA_SUCCESS;
1322 }
1323 
1324 /**
1325  * qla4xxx_about_firmware - gets FW, iscsi draft and boot loader version
1326  * @ha: Pointer to host adapter structure.
1327  *
1328  * Retrieves the FW version, iSCSI draft version & bootloader version of HBA.
1329  * Mailboxes 2 & 3 may hold an address for data. Make sure that we write 0 to
1330  * those mailboxes, if unused.
1331  **/
1332 int qla4xxx_about_firmware(struct scsi_qla_host *ha)
1333 {
1334 	struct about_fw_info *about_fw = NULL;
1335 	dma_addr_t about_fw_dma;
1336 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1337 	uint32_t mbox_sts[MBOX_REG_COUNT];
1338 	int status = QLA_ERROR;
1339 
1340 	about_fw = dma_alloc_coherent(&ha->pdev->dev,
1341 				      sizeof(struct about_fw_info),
1342 				      &about_fw_dma, GFP_KERNEL);
1343 	if (!about_fw) {
1344 		DEBUG2(ql4_printk(KERN_ERR, ha, "%s: Unable to alloc memory "
1345 				  "for about_fw\n", __func__));
1346 		return status;
1347 	}
1348 
1349 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1350 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1351 
1352 	mbox_cmd[0] = MBOX_CMD_ABOUT_FW;
1353 	mbox_cmd[2] = LSDW(about_fw_dma);
1354 	mbox_cmd[3] = MSDW(about_fw_dma);
1355 	mbox_cmd[4] = sizeof(struct about_fw_info);
1356 
1357 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, MBOX_REG_COUNT,
1358 					 &mbox_cmd[0], &mbox_sts[0]);
1359 	if (status != QLA_SUCCESS) {
1360 		DEBUG2(ql4_printk(KERN_WARNING, ha, "%s: MBOX_CMD_ABOUT_FW "
1361 				  "failed w/ status %04X\n", __func__,
1362 				  mbox_sts[0]));
1363 		goto exit_about_fw;
1364 	}
1365 
1366 	/* Save version information. */
1367 	ha->fw_info.fw_major = le16_to_cpu(about_fw->fw_major);
1368 	ha->fw_info.fw_minor = le16_to_cpu(about_fw->fw_minor);
1369 	ha->fw_info.fw_patch = le16_to_cpu(about_fw->fw_patch);
1370 	ha->fw_info.fw_build = le16_to_cpu(about_fw->fw_build);
1371 	memcpy(ha->fw_info.fw_build_date, about_fw->fw_build_date,
1372 	       sizeof(about_fw->fw_build_date));
1373 	memcpy(ha->fw_info.fw_build_time, about_fw->fw_build_time,
1374 	       sizeof(about_fw->fw_build_time));
1375 	strcpy((char *)ha->fw_info.fw_build_user,
1376 	       skip_spaces((char *)about_fw->fw_build_user));
1377 	ha->fw_info.fw_load_source = le16_to_cpu(about_fw->fw_load_source);
1378 	ha->fw_info.iscsi_major = le16_to_cpu(about_fw->iscsi_major);
1379 	ha->fw_info.iscsi_minor = le16_to_cpu(about_fw->iscsi_minor);
1380 	ha->fw_info.bootload_major = le16_to_cpu(about_fw->bootload_major);
1381 	ha->fw_info.bootload_minor = le16_to_cpu(about_fw->bootload_minor);
1382 	ha->fw_info.bootload_patch = le16_to_cpu(about_fw->bootload_patch);
1383 	ha->fw_info.bootload_build = le16_to_cpu(about_fw->bootload_build);
1384 	strcpy((char *)ha->fw_info.extended_timestamp,
1385 	       skip_spaces((char *)about_fw->extended_timestamp));
1386 
1387 	ha->fw_uptime_secs = le32_to_cpu(mbox_sts[5]);
1388 	ha->fw_uptime_msecs = le32_to_cpu(mbox_sts[6]);
1389 	status = QLA_SUCCESS;
1390 
1391 exit_about_fw:
1392 	dma_free_coherent(&ha->pdev->dev, sizeof(struct about_fw_info),
1393 			  about_fw, about_fw_dma);
1394 	return status;
1395 }
1396 
1397 int qla4xxx_get_default_ddb(struct scsi_qla_host *ha, uint32_t options,
1398 			    dma_addr_t dma_addr)
1399 {
1400 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1401 	uint32_t mbox_sts[MBOX_REG_COUNT];
1402 
1403 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1404 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1405 
1406 	mbox_cmd[0] = MBOX_CMD_GET_DATABASE_ENTRY_DEFAULTS;
1407 	mbox_cmd[1] = options;
1408 	mbox_cmd[2] = LSDW(dma_addr);
1409 	mbox_cmd[3] = MSDW(dma_addr);
1410 
1411 	if (qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0], &mbox_sts[0]) !=
1412 	    QLA_SUCCESS) {
1413 		DEBUG2(printk("scsi%ld: %s: failed status %04X\n",
1414 		     ha->host_no, __func__, mbox_sts[0]));
1415 		return QLA_ERROR;
1416 	}
1417 	return QLA_SUCCESS;
1418 }
1419 
1420 int qla4xxx_req_ddb_entry(struct scsi_qla_host *ha, uint32_t ddb_index,
1421 			  uint32_t *mbx_sts)
1422 {
1423 	int status;
1424 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1425 	uint32_t mbox_sts[MBOX_REG_COUNT];
1426 
1427 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1428 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1429 
1430 	mbox_cmd[0] = MBOX_CMD_REQUEST_DATABASE_ENTRY;
1431 	mbox_cmd[1] = ddb_index;
1432 
1433 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0],
1434 					 &mbox_sts[0]);
1435 	if (status != QLA_SUCCESS) {
1436 		DEBUG2(ql4_printk(KERN_ERR, ha, "%s: failed status %04X\n",
1437 				   __func__, mbox_sts[0]));
1438 	}
1439 
1440 	*mbx_sts = mbox_sts[0];
1441 	return status;
1442 }
1443 
1444 int qla4xxx_clear_ddb_entry(struct scsi_qla_host *ha, uint32_t ddb_index)
1445 {
1446 	int status;
1447 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1448 	uint32_t mbox_sts[MBOX_REG_COUNT];
1449 
1450 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1451 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1452 
1453 	mbox_cmd[0] = MBOX_CMD_CLEAR_DATABASE_ENTRY;
1454 	mbox_cmd[1] = ddb_index;
1455 
1456 	status = qla4xxx_mailbox_command(ha, 2, 1, &mbox_cmd[0],
1457 					 &mbox_sts[0]);
1458 	if (status != QLA_SUCCESS) {
1459 		DEBUG2(ql4_printk(KERN_ERR, ha, "%s: failed status %04X\n",
1460 				   __func__, mbox_sts[0]));
1461 	}
1462 
1463 	return status;
1464 }
1465 
1466 int qla4xxx_set_flash(struct scsi_qla_host *ha, dma_addr_t dma_addr,
1467 		      uint32_t offset, uint32_t length, uint32_t options)
1468 {
1469 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1470 	uint32_t mbox_sts[MBOX_REG_COUNT];
1471 	int status = QLA_SUCCESS;
1472 
1473 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1474 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1475 
1476 	mbox_cmd[0] = MBOX_CMD_WRITE_FLASH;
1477 	mbox_cmd[1] = LSDW(dma_addr);
1478 	mbox_cmd[2] = MSDW(dma_addr);
1479 	mbox_cmd[3] = offset;
1480 	mbox_cmd[4] = length;
1481 	mbox_cmd[5] = options;
1482 
1483 	status = qla4xxx_mailbox_command(ha, 6, 2, &mbox_cmd[0], &mbox_sts[0]);
1484 	if (status != QLA_SUCCESS) {
1485 		DEBUG2(ql4_printk(KERN_WARNING, ha, "%s: MBOX_CMD_WRITE_FLASH "
1486 				  "failed w/ status %04X, mbx1 %04X\n",
1487 				  __func__, mbox_sts[0], mbox_sts[1]));
1488 	}
1489 	return status;
1490 }
1491 
1492 int qla4xxx_bootdb_by_index(struct scsi_qla_host *ha,
1493 			    struct dev_db_entry *fw_ddb_entry,
1494 			    dma_addr_t fw_ddb_entry_dma, uint16_t ddb_index)
1495 {
1496 	uint32_t dev_db_start_offset = FLASH_OFFSET_DB_INFO;
1497 	uint32_t dev_db_end_offset;
1498 	int status = QLA_ERROR;
1499 
1500 	memset(fw_ddb_entry, 0, sizeof(*fw_ddb_entry));
1501 
1502 	dev_db_start_offset += (ddb_index * sizeof(*fw_ddb_entry));
1503 	dev_db_end_offset = FLASH_OFFSET_DB_END;
1504 
1505 	if (dev_db_start_offset > dev_db_end_offset) {
1506 		DEBUG2(ql4_printk(KERN_ERR, ha,
1507 				  "%s:Invalid DDB index %d", __func__,
1508 				  ddb_index));
1509 		goto exit_bootdb_failed;
1510 	}
1511 
1512 	if (qla4xxx_get_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
1513 			      sizeof(*fw_ddb_entry)) != QLA_SUCCESS) {
1514 		ql4_printk(KERN_ERR, ha, "scsi%ld: %s: Get Flash"
1515 			   "failed\n", ha->host_no, __func__);
1516 		goto exit_bootdb_failed;
1517 	}
1518 
1519 	if (fw_ddb_entry->cookie == DDB_VALID_COOKIE)
1520 		status = QLA_SUCCESS;
1521 
1522 exit_bootdb_failed:
1523 	return status;
1524 }
1525 
1526 int qla4xxx_flashdb_by_index(struct scsi_qla_host *ha,
1527 			     struct dev_db_entry *fw_ddb_entry,
1528 			     dma_addr_t fw_ddb_entry_dma, uint16_t ddb_index)
1529 {
1530 	uint32_t dev_db_start_offset;
1531 	uint32_t dev_db_end_offset;
1532 	int status = QLA_ERROR;
1533 
1534 	memset(fw_ddb_entry, 0, sizeof(*fw_ddb_entry));
1535 
1536 	if (is_qla40XX(ha)) {
1537 		dev_db_start_offset = FLASH_OFFSET_DB_INFO;
1538 		dev_db_end_offset = FLASH_OFFSET_DB_END;
1539 	} else {
1540 		dev_db_start_offset = FLASH_RAW_ACCESS_ADDR +
1541 				      (ha->hw.flt_region_ddb << 2);
1542 		/* flt_ddb_size is DDB table size for both ports
1543 		 * so divide it by 2 to calculate the offset for second port
1544 		 */
1545 		if (ha->port_num == 1)
1546 			dev_db_start_offset += (ha->hw.flt_ddb_size / 2);
1547 
1548 		dev_db_end_offset = dev_db_start_offset +
1549 				    (ha->hw.flt_ddb_size / 2);
1550 	}
1551 
1552 	dev_db_start_offset += (ddb_index * sizeof(*fw_ddb_entry));
1553 
1554 	if (dev_db_start_offset > dev_db_end_offset) {
1555 		DEBUG2(ql4_printk(KERN_ERR, ha,
1556 				  "%s:Invalid DDB index %d", __func__,
1557 				  ddb_index));
1558 		goto exit_fdb_failed;
1559 	}
1560 
1561 	if (qla4xxx_get_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
1562 			      sizeof(*fw_ddb_entry)) != QLA_SUCCESS) {
1563 		ql4_printk(KERN_ERR, ha, "scsi%ld: %s: Get Flash failed\n",
1564 			   ha->host_no, __func__);
1565 		goto exit_fdb_failed;
1566 	}
1567 
1568 	if (fw_ddb_entry->cookie == DDB_VALID_COOKIE)
1569 		status = QLA_SUCCESS;
1570 
1571 exit_fdb_failed:
1572 	return status;
1573 }
1574 
1575 int qla4xxx_get_chap(struct scsi_qla_host *ha, char *username, char *password,
1576 		     uint16_t idx)
1577 {
1578 	int ret = 0;
1579 	int rval = QLA_ERROR;
1580 	uint32_t offset = 0, chap_size;
1581 	struct ql4_chap_table *chap_table;
1582 	dma_addr_t chap_dma;
1583 
1584 	chap_table = dma_pool_zalloc(ha->chap_dma_pool, GFP_KERNEL, &chap_dma);
1585 	if (chap_table == NULL)
1586 		return -ENOMEM;
1587 
1588 	chap_size = sizeof(struct ql4_chap_table);
1589 
1590 	if (is_qla40XX(ha))
1591 		offset = FLASH_CHAP_OFFSET | (idx * chap_size);
1592 	else {
1593 		offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
1594 		/* flt_chap_size is CHAP table size for both ports
1595 		 * so divide it by 2 to calculate the offset for second port
1596 		 */
1597 		if (ha->port_num == 1)
1598 			offset += (ha->hw.flt_chap_size / 2);
1599 		offset += (idx * chap_size);
1600 	}
1601 
1602 	rval = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
1603 	if (rval != QLA_SUCCESS) {
1604 		ret = -EINVAL;
1605 		goto exit_get_chap;
1606 	}
1607 
1608 	DEBUG2(ql4_printk(KERN_INFO, ha, "Chap Cookie: x%x\n",
1609 		__le16_to_cpu(chap_table->cookie)));
1610 
1611 	if (__le16_to_cpu(chap_table->cookie) != CHAP_VALID_COOKIE) {
1612 		ql4_printk(KERN_ERR, ha, "No valid chap entry found\n");
1613 		goto exit_get_chap;
1614 	}
1615 
1616 	strlcpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
1617 	strlcpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
1618 	chap_table->cookie = __constant_cpu_to_le16(CHAP_VALID_COOKIE);
1619 
1620 exit_get_chap:
1621 	dma_pool_free(ha->chap_dma_pool, chap_table, chap_dma);
1622 	return ret;
1623 }
1624 
1625 /**
1626  * qla4xxx_set_chap - Make a chap entry at the given index
1627  * @ha: pointer to adapter structure
1628  * @username: CHAP username to set
1629  * @password: CHAP password to set
1630  * @idx: CHAP index at which to make the entry
1631  * @bidi: type of chap entry (chap_in or chap_out)
1632  *
1633  * Create chap entry at the given index with the information provided.
1634  *
1635  * Note: Caller should acquire the chap lock before getting here.
1636  **/
1637 int qla4xxx_set_chap(struct scsi_qla_host *ha, char *username, char *password,
1638 		     uint16_t idx, int bidi)
1639 {
1640 	int ret = 0;
1641 	int rval = QLA_ERROR;
1642 	uint32_t offset = 0;
1643 	struct ql4_chap_table *chap_table;
1644 	uint32_t chap_size = 0;
1645 	dma_addr_t chap_dma;
1646 
1647 	chap_table = dma_pool_zalloc(ha->chap_dma_pool, GFP_KERNEL, &chap_dma);
1648 	if (chap_table == NULL) {
1649 		ret =  -ENOMEM;
1650 		goto exit_set_chap;
1651 	}
1652 
1653 	if (bidi)
1654 		chap_table->flags |= BIT_6; /* peer */
1655 	else
1656 		chap_table->flags |= BIT_7; /* local */
1657 	chap_table->secret_len = strlen(password);
1658 	strncpy(chap_table->secret, password, MAX_CHAP_SECRET_LEN - 1);
1659 	strncpy(chap_table->name, username, MAX_CHAP_NAME_LEN - 1);
1660 	chap_table->cookie = __constant_cpu_to_le16(CHAP_VALID_COOKIE);
1661 
1662 	if (is_qla40XX(ha)) {
1663 		chap_size = MAX_CHAP_ENTRIES_40XX * sizeof(*chap_table);
1664 		offset = FLASH_CHAP_OFFSET;
1665 	} else { /* Single region contains CHAP info for both ports which is
1666 		  * divided into half for each port.
1667 		  */
1668 		chap_size = ha->hw.flt_chap_size / 2;
1669 		offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
1670 		if (ha->port_num == 1)
1671 			offset += chap_size;
1672 	}
1673 
1674 	offset += (idx * sizeof(struct ql4_chap_table));
1675 	rval = qla4xxx_set_flash(ha, chap_dma, offset,
1676 				sizeof(struct ql4_chap_table),
1677 				FLASH_OPT_RMW_COMMIT);
1678 
1679 	if (rval == QLA_SUCCESS && ha->chap_list) {
1680 		/* Update ha chap_list cache */
1681 		memcpy((struct ql4_chap_table *)ha->chap_list + idx,
1682 		       chap_table, sizeof(struct ql4_chap_table));
1683 	}
1684 	dma_pool_free(ha->chap_dma_pool, chap_table, chap_dma);
1685 	if (rval != QLA_SUCCESS)
1686 		ret =  -EINVAL;
1687 
1688 exit_set_chap:
1689 	return ret;
1690 }
1691 
1692 
1693 int qla4xxx_get_uni_chap_at_index(struct scsi_qla_host *ha, char *username,
1694 				  char *password, uint16_t chap_index)
1695 {
1696 	int rval = QLA_ERROR;
1697 	struct ql4_chap_table *chap_table = NULL;
1698 	int max_chap_entries;
1699 
1700 	if (!ha->chap_list) {
1701 		ql4_printk(KERN_ERR, ha, "Do not have CHAP table cache\n");
1702 		rval = QLA_ERROR;
1703 		goto exit_uni_chap;
1704 	}
1705 
1706 	if (!username || !password) {
1707 		ql4_printk(KERN_ERR, ha, "No memory for username & secret\n");
1708 		rval = QLA_ERROR;
1709 		goto exit_uni_chap;
1710 	}
1711 
1712 	if (is_qla80XX(ha))
1713 		max_chap_entries = (ha->hw.flt_chap_size / 2) /
1714 				   sizeof(struct ql4_chap_table);
1715 	else
1716 		max_chap_entries = MAX_CHAP_ENTRIES_40XX;
1717 
1718 	if (chap_index > max_chap_entries) {
1719 		ql4_printk(KERN_ERR, ha, "Invalid Chap index\n");
1720 		rval = QLA_ERROR;
1721 		goto exit_uni_chap;
1722 	}
1723 
1724 	mutex_lock(&ha->chap_sem);
1725 	chap_table = (struct ql4_chap_table *)ha->chap_list + chap_index;
1726 	if (chap_table->cookie != __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
1727 		rval = QLA_ERROR;
1728 		goto exit_unlock_uni_chap;
1729 	}
1730 
1731 	if (!(chap_table->flags & BIT_7)) {
1732 		ql4_printk(KERN_ERR, ha, "Unidirectional entry not set\n");
1733 		rval = QLA_ERROR;
1734 		goto exit_unlock_uni_chap;
1735 	}
1736 
1737 	strlcpy(password, chap_table->secret, MAX_CHAP_SECRET_LEN);
1738 	strlcpy(username, chap_table->name, MAX_CHAP_NAME_LEN);
1739 
1740 	rval = QLA_SUCCESS;
1741 
1742 exit_unlock_uni_chap:
1743 	mutex_unlock(&ha->chap_sem);
1744 exit_uni_chap:
1745 	return rval;
1746 }
1747 
1748 /**
1749  * qla4xxx_get_chap_index - Get chap index given username and secret
1750  * @ha: pointer to adapter structure
1751  * @username: CHAP username to be searched
1752  * @password: CHAP password to be searched
1753  * @bidi: Is this a BIDI CHAP
1754  * @chap_index: CHAP index to be returned
1755  *
1756  * Match the username and password in the chap_list, return the index if a
1757  * match is found. If a match is not found then add the entry in FLASH and
1758  * return the index at which entry is written in the FLASH.
1759  **/
1760 int qla4xxx_get_chap_index(struct scsi_qla_host *ha, char *username,
1761 			   char *password, int bidi, uint16_t *chap_index)
1762 {
1763 	int i, rval;
1764 	int free_index = -1;
1765 	int found_index = 0;
1766 	int max_chap_entries = 0;
1767 	struct ql4_chap_table *chap_table;
1768 
1769 	if (is_qla80XX(ha))
1770 		max_chap_entries = (ha->hw.flt_chap_size / 2) /
1771 						sizeof(struct ql4_chap_table);
1772 	else
1773 		max_chap_entries = MAX_CHAP_ENTRIES_40XX;
1774 
1775 	if (!ha->chap_list) {
1776 		ql4_printk(KERN_ERR, ha, "Do not have CHAP table cache\n");
1777 		return QLA_ERROR;
1778 	}
1779 
1780 	if (!username || !password) {
1781 		ql4_printk(KERN_ERR, ha, "Do not have username and psw\n");
1782 		return QLA_ERROR;
1783 	}
1784 
1785 	mutex_lock(&ha->chap_sem);
1786 	for (i = 0; i < max_chap_entries; i++) {
1787 		chap_table = (struct ql4_chap_table *)ha->chap_list + i;
1788 		if (chap_table->cookie !=
1789 		    __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
1790 			if (i > MAX_RESRV_CHAP_IDX && free_index == -1)
1791 				free_index = i;
1792 			continue;
1793 		}
1794 		if (bidi) {
1795 			if (chap_table->flags & BIT_7)
1796 				continue;
1797 		} else {
1798 			if (chap_table->flags & BIT_6)
1799 				continue;
1800 		}
1801 		if (!strncmp(chap_table->secret, password,
1802 			     MAX_CHAP_SECRET_LEN) &&
1803 		    !strncmp(chap_table->name, username,
1804 			     MAX_CHAP_NAME_LEN)) {
1805 			*chap_index = i;
1806 			found_index = 1;
1807 			break;
1808 		}
1809 	}
1810 
1811 	/* If chap entry is not present and a free index is available then
1812 	 * write the entry in flash
1813 	 */
1814 	if (!found_index && free_index != -1) {
1815 		rval = qla4xxx_set_chap(ha, username, password,
1816 					free_index, bidi);
1817 		if (!rval) {
1818 			*chap_index = free_index;
1819 			found_index = 1;
1820 		}
1821 	}
1822 
1823 	mutex_unlock(&ha->chap_sem);
1824 
1825 	if (found_index)
1826 		return QLA_SUCCESS;
1827 	return QLA_ERROR;
1828 }
1829 
1830 int qla4xxx_conn_close_sess_logout(struct scsi_qla_host *ha,
1831 				   uint16_t fw_ddb_index,
1832 				   uint16_t connection_id,
1833 				   uint16_t option)
1834 {
1835 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1836 	uint32_t mbox_sts[MBOX_REG_COUNT];
1837 	int status = QLA_SUCCESS;
1838 
1839 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1840 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1841 
1842 	mbox_cmd[0] = MBOX_CMD_CONN_CLOSE_SESS_LOGOUT;
1843 	mbox_cmd[1] = fw_ddb_index;
1844 	mbox_cmd[2] = connection_id;
1845 	mbox_cmd[3] = option;
1846 
1847 	status = qla4xxx_mailbox_command(ha, 4, 2, &mbox_cmd[0], &mbox_sts[0]);
1848 	if (status != QLA_SUCCESS) {
1849 		DEBUG2(ql4_printk(KERN_WARNING, ha, "%s: MBOX_CMD_CONN_CLOSE "
1850 				  "option %04x failed w/ status %04X %04X\n",
1851 				  __func__, option, mbox_sts[0], mbox_sts[1]));
1852 	}
1853 	return status;
1854 }
1855 
1856 /**
1857  * qla4_84xx_extend_idc_tmo - Extend IDC Timeout.
1858  * @ha: Pointer to host adapter structure.
1859  * @ext_tmo: idc timeout value
1860  *
1861  * Requests firmware to extend the idc timeout value.
1862  **/
1863 static int qla4_84xx_extend_idc_tmo(struct scsi_qla_host *ha, uint32_t ext_tmo)
1864 {
1865 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1866 	uint32_t mbox_sts[MBOX_REG_COUNT];
1867 	int status;
1868 
1869 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1870 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1871 	ext_tmo &= 0xf;
1872 
1873 	mbox_cmd[0] = MBOX_CMD_IDC_TIME_EXTEND;
1874 	mbox_cmd[1] = ((ha->idc_info.request_desc & 0xfffff0ff) |
1875 		       (ext_tmo << 8));		/* new timeout */
1876 	mbox_cmd[2] = ha->idc_info.info1;
1877 	mbox_cmd[3] = ha->idc_info.info2;
1878 	mbox_cmd[4] = ha->idc_info.info3;
1879 
1880 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, MBOX_REG_COUNT,
1881 					 mbox_cmd, mbox_sts);
1882 	if (status != QLA_SUCCESS) {
1883 		DEBUG2(ql4_printk(KERN_INFO, ha,
1884 				  "scsi%ld: %s: failed status %04X\n",
1885 				  ha->host_no, __func__, mbox_sts[0]));
1886 		return QLA_ERROR;
1887 	} else {
1888 		ql4_printk(KERN_INFO, ha, "%s: IDC timeout extended by %d secs\n",
1889 			   __func__, ext_tmo);
1890 	}
1891 
1892 	return QLA_SUCCESS;
1893 }
1894 
1895 int qla4xxx_disable_acb(struct scsi_qla_host *ha)
1896 {
1897 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1898 	uint32_t mbox_sts[MBOX_REG_COUNT];
1899 	int status = QLA_SUCCESS;
1900 
1901 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1902 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1903 
1904 	mbox_cmd[0] = MBOX_CMD_DISABLE_ACB;
1905 
1906 	status = qla4xxx_mailbox_command(ha, 8, 5, &mbox_cmd[0], &mbox_sts[0]);
1907 	if (status != QLA_SUCCESS) {
1908 		DEBUG2(ql4_printk(KERN_WARNING, ha, "%s: MBOX_CMD_DISABLE_ACB "
1909 				  "failed w/ status %04X %04X %04X", __func__,
1910 				  mbox_sts[0], mbox_sts[1], mbox_sts[2]));
1911 	} else {
1912 		if (is_qla8042(ha) &&
1913 		    test_bit(DPC_POST_IDC_ACK, &ha->dpc_flags) &&
1914 		    (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE)) {
1915 			/*
1916 			 * Disable ACB mailbox command takes time to complete
1917 			 * based on the total number of targets connected.
1918 			 * For 512 targets, it took approximately 5 secs to
1919 			 * complete. Setting the timeout value to 8, with the 3
1920 			 * secs buffer.
1921 			 */
1922 			qla4_84xx_extend_idc_tmo(ha, IDC_EXTEND_TOV);
1923 			if (!wait_for_completion_timeout(&ha->disable_acb_comp,
1924 							 IDC_EXTEND_TOV * HZ)) {
1925 				ql4_printk(KERN_WARNING, ha, "%s: Disable ACB Completion not received\n",
1926 					   __func__);
1927 			}
1928 		}
1929 	}
1930 	return status;
1931 }
1932 
1933 int qla4xxx_get_acb(struct scsi_qla_host *ha, dma_addr_t acb_dma,
1934 		    uint32_t acb_type, uint32_t len)
1935 {
1936 	uint32_t mbox_cmd[MBOX_REG_COUNT];
1937 	uint32_t mbox_sts[MBOX_REG_COUNT];
1938 	int status = QLA_SUCCESS;
1939 
1940 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1941 	memset(&mbox_sts, 0, sizeof(mbox_sts));
1942 
1943 	mbox_cmd[0] = MBOX_CMD_GET_ACB;
1944 	mbox_cmd[1] = acb_type;
1945 	mbox_cmd[2] = LSDW(acb_dma);
1946 	mbox_cmd[3] = MSDW(acb_dma);
1947 	mbox_cmd[4] = len;
1948 
1949 	status = qla4xxx_mailbox_command(ha, 5, 5, &mbox_cmd[0], &mbox_sts[0]);
1950 	if (status != QLA_SUCCESS) {
1951 		DEBUG2(ql4_printk(KERN_WARNING, ha, "%s: MBOX_CMD_GET_ACB "
1952 				  "failed w/ status %04X\n", __func__,
1953 				  mbox_sts[0]));
1954 	}
1955 	return status;
1956 }
1957 
1958 int qla4xxx_set_acb(struct scsi_qla_host *ha, uint32_t *mbox_cmd,
1959 		    uint32_t *mbox_sts, dma_addr_t acb_dma)
1960 {
1961 	int status = QLA_SUCCESS;
1962 
1963 	memset(mbox_cmd, 0, sizeof(mbox_cmd[0]) * MBOX_REG_COUNT);
1964 	memset(mbox_sts, 0, sizeof(mbox_sts[0]) * MBOX_REG_COUNT);
1965 	mbox_cmd[0] = MBOX_CMD_SET_ACB;
1966 	mbox_cmd[1] = 0; /* Primary ACB */
1967 	mbox_cmd[2] = LSDW(acb_dma);
1968 	mbox_cmd[3] = MSDW(acb_dma);
1969 	mbox_cmd[4] = sizeof(struct addr_ctrl_blk);
1970 
1971 	status = qla4xxx_mailbox_command(ha, 5, 5, &mbox_cmd[0], &mbox_sts[0]);
1972 	if (status != QLA_SUCCESS) {
1973 		DEBUG2(ql4_printk(KERN_WARNING, ha,  "%s: MBOX_CMD_SET_ACB "
1974 				  "failed w/ status %04X\n", __func__,
1975 				  mbox_sts[0]));
1976 	}
1977 	return status;
1978 }
1979 
1980 int qla4xxx_set_param_ddbentry(struct scsi_qla_host *ha,
1981 			       struct ddb_entry *ddb_entry,
1982 			       struct iscsi_cls_conn *cls_conn,
1983 			       uint32_t *mbx_sts)
1984 {
1985 	struct dev_db_entry *fw_ddb_entry;
1986 	struct iscsi_conn *conn;
1987 	struct iscsi_session *sess;
1988 	struct qla_conn *qla_conn;
1989 	struct sockaddr *dst_addr;
1990 	dma_addr_t fw_ddb_entry_dma;
1991 	int status = QLA_SUCCESS;
1992 	int rval = 0;
1993 	struct sockaddr_in *addr;
1994 	struct sockaddr_in6 *addr6;
1995 	char *ip;
1996 	uint16_t iscsi_opts = 0;
1997 	uint32_t options = 0;
1998 	uint16_t idx, *ptid;
1999 
2000 	fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2001 					  &fw_ddb_entry_dma, GFP_KERNEL);
2002 	if (!fw_ddb_entry) {
2003 		DEBUG2(ql4_printk(KERN_ERR, ha,
2004 				  "%s: Unable to allocate dma buffer.\n",
2005 				  __func__));
2006 		rval = -ENOMEM;
2007 		goto exit_set_param_no_free;
2008 	}
2009 
2010 	conn = cls_conn->dd_data;
2011 	qla_conn = conn->dd_data;
2012 	sess = conn->session;
2013 	dst_addr = (struct sockaddr *)&qla_conn->qla_ep->dst_addr;
2014 
2015 	if (dst_addr->sa_family == AF_INET6)
2016 		options |= IPV6_DEFAULT_DDB_ENTRY;
2017 
2018 	status = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
2019 	if (status == QLA_ERROR) {
2020 		rval = -EINVAL;
2021 		goto exit_set_param;
2022 	}
2023 
2024 	ptid = (uint16_t *)&fw_ddb_entry->isid[1];
2025 	*ptid = cpu_to_le16((uint16_t)ddb_entry->sess->target_id);
2026 
2027 	DEBUG2(ql4_printk(KERN_INFO, ha, "ISID [%pmR]\n", fw_ddb_entry->isid));
2028 
2029 	iscsi_opts = le16_to_cpu(fw_ddb_entry->iscsi_options);
2030 	memset(fw_ddb_entry->iscsi_alias, 0, sizeof(fw_ddb_entry->iscsi_alias));
2031 
2032 	memset(fw_ddb_entry->iscsi_name, 0, sizeof(fw_ddb_entry->iscsi_name));
2033 
2034 	if (sess->targetname != NULL) {
2035 		memcpy(fw_ddb_entry->iscsi_name, sess->targetname,
2036 		       min(strlen(sess->targetname),
2037 		       sizeof(fw_ddb_entry->iscsi_name)));
2038 	}
2039 
2040 	memset(fw_ddb_entry->ip_addr, 0, sizeof(fw_ddb_entry->ip_addr));
2041 	memset(fw_ddb_entry->tgt_addr, 0, sizeof(fw_ddb_entry->tgt_addr));
2042 
2043 	fw_ddb_entry->options =  DDB_OPT_TARGET | DDB_OPT_AUTO_SENDTGTS_DISABLE;
2044 
2045 	if (dst_addr->sa_family == AF_INET) {
2046 		addr = (struct sockaddr_in *)dst_addr;
2047 		ip = (char *)&addr->sin_addr;
2048 		memcpy(fw_ddb_entry->ip_addr, ip, IP_ADDR_LEN);
2049 		fw_ddb_entry->port = cpu_to_le16(ntohs(addr->sin_port));
2050 		DEBUG2(ql4_printk(KERN_INFO, ha,
2051 				  "%s: Destination Address [%pI4]: index [%d]\n",
2052 				   __func__, fw_ddb_entry->ip_addr,
2053 				  ddb_entry->fw_ddb_index));
2054 	} else if (dst_addr->sa_family == AF_INET6) {
2055 		addr6 = (struct sockaddr_in6 *)dst_addr;
2056 		ip = (char *)&addr6->sin6_addr;
2057 		memcpy(fw_ddb_entry->ip_addr, ip, IPv6_ADDR_LEN);
2058 		fw_ddb_entry->port = cpu_to_le16(ntohs(addr6->sin6_port));
2059 		fw_ddb_entry->options |= DDB_OPT_IPV6_DEVICE;
2060 		DEBUG2(ql4_printk(KERN_INFO, ha,
2061 				  "%s: Destination Address [%pI6]: index [%d]\n",
2062 				   __func__, fw_ddb_entry->ip_addr,
2063 				  ddb_entry->fw_ddb_index));
2064 	} else {
2065 		ql4_printk(KERN_ERR, ha,
2066 			   "%s: Failed to get IP Address\n",
2067 			   __func__);
2068 		rval = -EINVAL;
2069 		goto exit_set_param;
2070 	}
2071 
2072 	/* CHAP */
2073 	if (sess->username != NULL && sess->password != NULL) {
2074 		if (strlen(sess->username) && strlen(sess->password)) {
2075 			iscsi_opts |= BIT_7;
2076 
2077 			rval = qla4xxx_get_chap_index(ha, sess->username,
2078 						sess->password,
2079 						LOCAL_CHAP, &idx);
2080 			if (rval)
2081 				goto exit_set_param;
2082 
2083 			fw_ddb_entry->chap_tbl_idx = cpu_to_le16(idx);
2084 		}
2085 	}
2086 
2087 	if (sess->username_in != NULL && sess->password_in != NULL) {
2088 		/* Check if BIDI CHAP */
2089 		if (strlen(sess->username_in) && strlen(sess->password_in)) {
2090 			iscsi_opts |= BIT_4;
2091 
2092 			rval = qla4xxx_get_chap_index(ha, sess->username_in,
2093 						      sess->password_in,
2094 						      BIDI_CHAP, &idx);
2095 			if (rval)
2096 				goto exit_set_param;
2097 		}
2098 	}
2099 
2100 	if (sess->initial_r2t_en)
2101 		iscsi_opts |= BIT_10;
2102 
2103 	if (sess->imm_data_en)
2104 		iscsi_opts |= BIT_11;
2105 
2106 	fw_ddb_entry->iscsi_options = cpu_to_le16(iscsi_opts);
2107 
2108 	if (conn->max_recv_dlength)
2109 		fw_ddb_entry->iscsi_max_rcv_data_seg_len =
2110 		  __constant_cpu_to_le16((conn->max_recv_dlength / BYTE_UNITS));
2111 
2112 	if (sess->max_r2t)
2113 		fw_ddb_entry->iscsi_max_outsnd_r2t = cpu_to_le16(sess->max_r2t);
2114 
2115 	if (sess->first_burst)
2116 		fw_ddb_entry->iscsi_first_burst_len =
2117 		       __constant_cpu_to_le16((sess->first_burst / BYTE_UNITS));
2118 
2119 	if (sess->max_burst)
2120 		fw_ddb_entry->iscsi_max_burst_len =
2121 			__constant_cpu_to_le16((sess->max_burst / BYTE_UNITS));
2122 
2123 	if (sess->time2wait)
2124 		fw_ddb_entry->iscsi_def_time2wait =
2125 			cpu_to_le16(sess->time2wait);
2126 
2127 	if (sess->time2retain)
2128 		fw_ddb_entry->iscsi_def_time2retain =
2129 			cpu_to_le16(sess->time2retain);
2130 
2131 	status = qla4xxx_set_ddb_entry(ha, ddb_entry->fw_ddb_index,
2132 				       fw_ddb_entry_dma, mbx_sts);
2133 
2134 	if (status != QLA_SUCCESS)
2135 		rval = -EINVAL;
2136 exit_set_param:
2137 	dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2138 			  fw_ddb_entry, fw_ddb_entry_dma);
2139 exit_set_param_no_free:
2140 	return rval;
2141 }
2142 
2143 int qla4xxx_get_mgmt_data(struct scsi_qla_host *ha, uint16_t fw_ddb_index,
2144 			  uint16_t stats_size, dma_addr_t stats_dma)
2145 {
2146 	int status = QLA_SUCCESS;
2147 	uint32_t mbox_cmd[MBOX_REG_COUNT];
2148 	uint32_t mbox_sts[MBOX_REG_COUNT];
2149 
2150 	memset(mbox_cmd, 0, sizeof(mbox_cmd[0]) * MBOX_REG_COUNT);
2151 	memset(mbox_sts, 0, sizeof(mbox_sts[0]) * MBOX_REG_COUNT);
2152 	mbox_cmd[0] = MBOX_CMD_GET_MANAGEMENT_DATA;
2153 	mbox_cmd[1] = fw_ddb_index;
2154 	mbox_cmd[2] = LSDW(stats_dma);
2155 	mbox_cmd[3] = MSDW(stats_dma);
2156 	mbox_cmd[4] = stats_size;
2157 
2158 	status = qla4xxx_mailbox_command(ha, 5, 1, &mbox_cmd[0], &mbox_sts[0]);
2159 	if (status != QLA_SUCCESS) {
2160 		DEBUG2(ql4_printk(KERN_WARNING, ha,
2161 				  "%s: MBOX_CMD_GET_MANAGEMENT_DATA "
2162 				  "failed w/ status %04X\n", __func__,
2163 				  mbox_sts[0]));
2164 	}
2165 	return status;
2166 }
2167 
2168 int qla4xxx_get_ip_state(struct scsi_qla_host *ha, uint32_t acb_idx,
2169 			 uint32_t ip_idx, uint32_t *sts)
2170 {
2171 	uint32_t mbox_cmd[MBOX_REG_COUNT];
2172 	uint32_t mbox_sts[MBOX_REG_COUNT];
2173 	int status = QLA_SUCCESS;
2174 
2175 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
2176 	memset(&mbox_sts, 0, sizeof(mbox_sts));
2177 	mbox_cmd[0] = MBOX_CMD_GET_IP_ADDR_STATE;
2178 	mbox_cmd[1] = acb_idx;
2179 	mbox_cmd[2] = ip_idx;
2180 
2181 	status = qla4xxx_mailbox_command(ha, 3, 8, &mbox_cmd[0], &mbox_sts[0]);
2182 	if (status != QLA_SUCCESS) {
2183 		DEBUG2(ql4_printk(KERN_WARNING, ha,  "%s: "
2184 				  "MBOX_CMD_GET_IP_ADDR_STATE failed w/ "
2185 				  "status %04X\n", __func__, mbox_sts[0]));
2186 	}
2187 	memcpy(sts, mbox_sts, sizeof(mbox_sts));
2188 	return status;
2189 }
2190 
2191 int qla4xxx_get_nvram(struct scsi_qla_host *ha, dma_addr_t nvram_dma,
2192 		      uint32_t offset, uint32_t size)
2193 {
2194 	int status = QLA_SUCCESS;
2195 	uint32_t mbox_cmd[MBOX_REG_COUNT];
2196 	uint32_t mbox_sts[MBOX_REG_COUNT];
2197 
2198 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
2199 	memset(&mbox_sts, 0, sizeof(mbox_sts));
2200 
2201 	mbox_cmd[0] = MBOX_CMD_GET_NVRAM;
2202 	mbox_cmd[1] = LSDW(nvram_dma);
2203 	mbox_cmd[2] = MSDW(nvram_dma);
2204 	mbox_cmd[3] = offset;
2205 	mbox_cmd[4] = size;
2206 
2207 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0],
2208 					 &mbox_sts[0]);
2209 	if (status != QLA_SUCCESS) {
2210 		DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
2211 				  "status %04X\n", ha->host_no, __func__,
2212 				  mbox_sts[0]));
2213 	}
2214 	return status;
2215 }
2216 
2217 int qla4xxx_set_nvram(struct scsi_qla_host *ha, dma_addr_t nvram_dma,
2218 		      uint32_t offset, uint32_t size)
2219 {
2220 	int status = QLA_SUCCESS;
2221 	uint32_t mbox_cmd[MBOX_REG_COUNT];
2222 	uint32_t mbox_sts[MBOX_REG_COUNT];
2223 
2224 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
2225 	memset(&mbox_sts, 0, sizeof(mbox_sts));
2226 
2227 	mbox_cmd[0] = MBOX_CMD_SET_NVRAM;
2228 	mbox_cmd[1] = LSDW(nvram_dma);
2229 	mbox_cmd[2] = MSDW(nvram_dma);
2230 	mbox_cmd[3] = offset;
2231 	mbox_cmd[4] = size;
2232 
2233 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 1, &mbox_cmd[0],
2234 					 &mbox_sts[0]);
2235 	if (status != QLA_SUCCESS) {
2236 		DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
2237 				  "status %04X\n", ha->host_no, __func__,
2238 				  mbox_sts[0]));
2239 	}
2240 	return status;
2241 }
2242 
2243 int qla4xxx_restore_factory_defaults(struct scsi_qla_host *ha,
2244 				     uint32_t region, uint32_t field0,
2245 				     uint32_t field1)
2246 {
2247 	int status = QLA_SUCCESS;
2248 	uint32_t mbox_cmd[MBOX_REG_COUNT];
2249 	uint32_t mbox_sts[MBOX_REG_COUNT];
2250 
2251 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
2252 	memset(&mbox_sts, 0, sizeof(mbox_sts));
2253 
2254 	mbox_cmd[0] = MBOX_CMD_RESTORE_FACTORY_DEFAULTS;
2255 	mbox_cmd[3] = region;
2256 	mbox_cmd[4] = field0;
2257 	mbox_cmd[5] = field1;
2258 
2259 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 3, &mbox_cmd[0],
2260 					 &mbox_sts[0]);
2261 	if (status != QLA_SUCCESS) {
2262 		DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
2263 				  "status %04X\n", ha->host_no, __func__,
2264 				  mbox_sts[0]));
2265 	}
2266 	return status;
2267 }
2268 
2269 /**
2270  * qla4_8xxx_set_param - set driver version in firmware.
2271  * @ha: Pointer to host adapter structure.
2272  * @param: Parameter to set i.e driver version
2273  **/
2274 int qla4_8xxx_set_param(struct scsi_qla_host *ha, int param)
2275 {
2276 	uint32_t mbox_cmd[MBOX_REG_COUNT];
2277 	uint32_t mbox_sts[MBOX_REG_COUNT];
2278 	uint32_t status;
2279 
2280 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
2281 	memset(&mbox_sts, 0, sizeof(mbox_sts));
2282 
2283 	mbox_cmd[0] = MBOX_CMD_SET_PARAM;
2284 	if (param == SET_DRVR_VERSION) {
2285 		mbox_cmd[1] = SET_DRVR_VERSION;
2286 		strncpy((char *)&mbox_cmd[2], QLA4XXX_DRIVER_VERSION,
2287 			MAX_DRVR_VER_LEN - 1);
2288 	} else {
2289 		ql4_printk(KERN_ERR, ha, "%s: invalid parameter 0x%x\n",
2290 			   __func__, param);
2291 		status = QLA_ERROR;
2292 		goto exit_set_param;
2293 	}
2294 
2295 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, 2, mbox_cmd,
2296 					 mbox_sts);
2297 	if (status == QLA_ERROR)
2298 		ql4_printk(KERN_ERR, ha, "%s: failed status %04X\n",
2299 			   __func__, mbox_sts[0]);
2300 
2301 exit_set_param:
2302 	return status;
2303 }
2304 
2305 /**
2306  * qla4_83xx_post_idc_ack - post IDC ACK
2307  * @ha: Pointer to host adapter structure.
2308  *
2309  * Posts IDC ACK for IDC Request Notification AEN.
2310  **/
2311 int qla4_83xx_post_idc_ack(struct scsi_qla_host *ha)
2312 {
2313 	uint32_t mbox_cmd[MBOX_REG_COUNT];
2314 	uint32_t mbox_sts[MBOX_REG_COUNT];
2315 	int status;
2316 
2317 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
2318 	memset(&mbox_sts, 0, sizeof(mbox_sts));
2319 
2320 	mbox_cmd[0] = MBOX_CMD_IDC_ACK;
2321 	mbox_cmd[1] = ha->idc_info.request_desc;
2322 	mbox_cmd[2] = ha->idc_info.info1;
2323 	mbox_cmd[3] = ha->idc_info.info2;
2324 	mbox_cmd[4] = ha->idc_info.info3;
2325 
2326 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, MBOX_REG_COUNT,
2327 					 mbox_cmd, mbox_sts);
2328 	if (status == QLA_ERROR)
2329 		ql4_printk(KERN_ERR, ha, "%s: failed status %04X\n", __func__,
2330 			   mbox_sts[0]);
2331 	else
2332 	       ql4_printk(KERN_INFO, ha, "%s: IDC ACK posted\n", __func__);
2333 
2334 	return status;
2335 }
2336 
2337 int qla4_84xx_config_acb(struct scsi_qla_host *ha, int acb_config)
2338 {
2339 	uint32_t mbox_cmd[MBOX_REG_COUNT];
2340 	uint32_t mbox_sts[MBOX_REG_COUNT];
2341 	struct addr_ctrl_blk *acb = NULL;
2342 	uint32_t acb_len = sizeof(struct addr_ctrl_blk);
2343 	int rval = QLA_SUCCESS;
2344 	dma_addr_t acb_dma;
2345 
2346 	acb = dma_alloc_coherent(&ha->pdev->dev,
2347 				 sizeof(struct addr_ctrl_blk),
2348 				 &acb_dma, GFP_KERNEL);
2349 	if (!acb) {
2350 		ql4_printk(KERN_ERR, ha, "%s: Unable to alloc acb\n", __func__);
2351 		rval = QLA_ERROR;
2352 		goto exit_config_acb;
2353 	}
2354 	memset(acb, 0, acb_len);
2355 
2356 	switch (acb_config) {
2357 	case ACB_CONFIG_DISABLE:
2358 		rval = qla4xxx_get_acb(ha, acb_dma, 0, acb_len);
2359 		if (rval != QLA_SUCCESS)
2360 			goto exit_free_acb;
2361 
2362 		rval = qla4xxx_disable_acb(ha);
2363 		if (rval != QLA_SUCCESS)
2364 			goto exit_free_acb;
2365 
2366 		if (!ha->saved_acb)
2367 			ha->saved_acb = kzalloc(acb_len, GFP_KERNEL);
2368 
2369 		if (!ha->saved_acb) {
2370 			ql4_printk(KERN_ERR, ha, "%s: Unable to alloc acb\n",
2371 				   __func__);
2372 			rval = QLA_ERROR;
2373 			goto exit_free_acb;
2374 		}
2375 		memcpy(ha->saved_acb, acb, acb_len);
2376 		break;
2377 	case ACB_CONFIG_SET:
2378 
2379 		if (!ha->saved_acb) {
2380 			ql4_printk(KERN_ERR, ha, "%s: Can't set ACB, Saved ACB not available\n",
2381 				   __func__);
2382 			rval = QLA_ERROR;
2383 			goto exit_free_acb;
2384 		}
2385 
2386 		memcpy(acb, ha->saved_acb, acb_len);
2387 
2388 		rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], acb_dma);
2389 		if (rval != QLA_SUCCESS)
2390 			goto exit_free_acb;
2391 
2392 		break;
2393 	default:
2394 		ql4_printk(KERN_ERR, ha, "%s: Invalid ACB Configuration\n",
2395 			   __func__);
2396 	}
2397 
2398 exit_free_acb:
2399 	dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk), acb,
2400 			  acb_dma);
2401 exit_config_acb:
2402 	if ((acb_config == ACB_CONFIG_SET) && ha->saved_acb) {
2403 		kfree(ha->saved_acb);
2404 		ha->saved_acb = NULL;
2405 	}
2406 	DEBUG2(ql4_printk(KERN_INFO, ha,
2407 			  "%s %s\n", __func__,
2408 			  rval == QLA_SUCCESS ? "SUCCEEDED" : "FAILED"));
2409 	return rval;
2410 }
2411 
2412 int qla4_83xx_get_port_config(struct scsi_qla_host *ha, uint32_t *config)
2413 {
2414 	uint32_t mbox_cmd[MBOX_REG_COUNT];
2415 	uint32_t mbox_sts[MBOX_REG_COUNT];
2416 	int status;
2417 
2418 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
2419 	memset(&mbox_sts, 0, sizeof(mbox_sts));
2420 
2421 	mbox_cmd[0] = MBOX_CMD_GET_PORT_CONFIG;
2422 
2423 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, MBOX_REG_COUNT,
2424 					 mbox_cmd, mbox_sts);
2425 	if (status == QLA_SUCCESS)
2426 		*config = mbox_sts[1];
2427 	else
2428 		ql4_printk(KERN_ERR, ha, "%s: failed status %04X\n", __func__,
2429 			   mbox_sts[0]);
2430 
2431 	return status;
2432 }
2433 
2434 int qla4_83xx_set_port_config(struct scsi_qla_host *ha, uint32_t *config)
2435 {
2436 	uint32_t mbox_cmd[MBOX_REG_COUNT];
2437 	uint32_t mbox_sts[MBOX_REG_COUNT];
2438 	int status;
2439 
2440 	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
2441 	memset(&mbox_sts, 0, sizeof(mbox_sts));
2442 
2443 	mbox_cmd[0] = MBOX_CMD_SET_PORT_CONFIG;
2444 	mbox_cmd[1] = *config;
2445 
2446 	status = qla4xxx_mailbox_command(ha, MBOX_REG_COUNT, MBOX_REG_COUNT,
2447 				mbox_cmd, mbox_sts);
2448 	if (status != QLA_SUCCESS)
2449 		ql4_printk(KERN_ERR, ha, "%s: failed status %04X\n", __func__,
2450 			   mbox_sts[0]);
2451 
2452 	return status;
2453 }
2454