ql4_init.c

   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * QLogic iSCSI HBA Driver
   4 * Copyright (c)  2003-2013 QLogic Corporation
   5 */
   6
   7#include <scsi/iscsi_if.h>
   8#include "ql4_def.h"
   9#include "ql4_glbl.h"
  10#include "ql4_dbg.h"
  11#include "ql4_inline.h"
  12
  13static void ql4xxx_set_mac_number(struct scsi_qla_host *ha)
  14{
  15	uint32_t value;
  16	unsigned long flags;
  17
  18	/* Get the function number */
  19	spin_lock_irqsave(&ha->hardware_lock, flags);
  20	value = readw(&ha->reg->ctrl_status);
  21	spin_unlock_irqrestore(&ha->hardware_lock, flags);
  22
  23	switch (value & ISP_CONTROL_FN_MASK) {
  24	case ISP_CONTROL_FN0_SCSI:
  25		ha->mac_index = 1;
  26		break;
  27	case ISP_CONTROL_FN1_SCSI:
  28		ha->mac_index = 3;
  29		break;
  30	default:
  31		DEBUG2(printk("scsi%ld: %s: Invalid function number, "
  32			      "ispControlStatus = 0x%x\n", ha->host_no,
  33			      __func__, value));
  34		break;
  35	}
  36	DEBUG2(printk("scsi%ld: %s: mac_index %d.\n", ha->host_no, __func__,
  37		      ha->mac_index));
  38}
  39
  40/**
  41 * qla4xxx_free_ddb - deallocate ddb
  42 * @ha: pointer to host adapter structure.
  43 * @ddb_entry: pointer to device database entry
  44 *
  45 * This routine marks a DDB entry INVALID
  46 **/
  47void qla4xxx_free_ddb(struct scsi_qla_host *ha,
  48    struct ddb_entry *ddb_entry)
  49{
  50	/* Remove device pointer from index mapping arrays */
  51	ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] =
  52		(struct ddb_entry *) INVALID_ENTRY;
  53	ha->tot_ddbs--;
  54}
  55
  56/**
  57 * qla4xxx_init_response_q_entries() - Initializes response queue entries.
  58 * @ha: HA context
  59 *
  60 * Beginning of request ring has initialization control block already built
  61 * by nvram config routine.
  62 **/
  63static void qla4xxx_init_response_q_entries(struct scsi_qla_host *ha)
  64{
  65	uint16_t cnt;
  66	struct response *pkt;
  67
  68	pkt = (struct response *)ha->response_ptr;
  69	for (cnt = 0; cnt < RESPONSE_QUEUE_DEPTH; cnt++) {
  70		pkt->signature = RESPONSE_PROCESSED;
  71		pkt++;
  72	}
  73}
  74
  75/**
  76 * qla4xxx_init_rings - initialize hw queues
  77 * @ha: pointer to host adapter structure.
  78 *
  79 * This routine initializes the internal queues for the specified adapter.
  80 * The QLA4010 requires us to restart the queues at index 0.
  81 * The QLA4000 doesn't care, so just default to QLA4010's requirement.
  82 **/
  83int qla4xxx_init_rings(struct scsi_qla_host *ha)
  84{
  85	unsigned long flags = 0;
  86	int i;
  87
  88	/* Initialize request queue. */
  89	spin_lock_irqsave(&ha->hardware_lock, flags);
  90	ha->request_out = 0;
  91	ha->request_in = 0;
  92	ha->request_ptr = &ha->request_ring[ha->request_in];
  93	ha->req_q_count = REQUEST_QUEUE_DEPTH;
  94
  95	/* Initialize response queue. */
  96	ha->response_in = 0;
  97	ha->response_out = 0;
  98	ha->response_ptr = &ha->response_ring[ha->response_out];
  99
 100	if (is_qla8022(ha)) {
 101		writel(0,
 102		    (unsigned long  __iomem *)&ha->qla4_82xx_reg->req_q_out);
 103		writel(0,
 104		    (unsigned long  __iomem *)&ha->qla4_82xx_reg->rsp_q_in);
 105		writel(0,
 106		    (unsigned long  __iomem *)&ha->qla4_82xx_reg->rsp_q_out);
 107	} else if (is_qla8032(ha) || is_qla8042(ha)) {
 108		writel(0,
 109		       (unsigned long __iomem *)&ha->qla4_83xx_reg->req_q_in);
 110		writel(0,
 111		       (unsigned long __iomem *)&ha->qla4_83xx_reg->rsp_q_in);
 112		writel(0,
 113		       (unsigned long __iomem *)&ha->qla4_83xx_reg->rsp_q_out);
 114	} else {
 115		/*
 116		 * Initialize DMA Shadow registers.  The firmware is really
 117		 * supposed to take care of this, but on some uniprocessor
 118		 * systems, the shadow registers aren't cleared-- causing
 119		 * the interrupt_handler to think there are responses to be
 120		 * processed when there aren't.
 121		 */
 122		ha->shadow_regs->req_q_out = cpu_to_le32(0);
 123		ha->shadow_regs->rsp_q_in = cpu_to_le32(0);
 124		wmb();
 125
 126		writel(0, &ha->reg->req_q_in);
 127		writel(0, &ha->reg->rsp_q_out);
 128		readl(&ha->reg->rsp_q_out);
 129	}
 130
 131	qla4xxx_init_response_q_entries(ha);
 132
 133	/* Initialize mailbox active array */
 134	for (i = 0; i < MAX_MRB; i++)
 135		ha->active_mrb_array[i] = NULL;
 136
 137	spin_unlock_irqrestore(&ha->hardware_lock, flags);
 138
 139	return QLA_SUCCESS;
 140}
 141
 142/**
 143 * qla4xxx_get_sys_info - validate adapter MAC address(es)
 144 * @ha: pointer to host adapter structure.
 145 *
 146 **/
 147int qla4xxx_get_sys_info(struct scsi_qla_host *ha)
 148{
 149	struct flash_sys_info *sys_info;
 150	dma_addr_t sys_info_dma;
 151	int status = QLA_ERROR;
 152
 153	sys_info = dma_alloc_coherent(&ha->pdev->dev, sizeof(*sys_info),
 154				      &sys_info_dma, GFP_KERNEL);
 155	if (sys_info == NULL) {
 156		DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
 157			      ha->host_no, __func__));
 158
 159		goto exit_get_sys_info_no_free;
 160	}
 161
 162	/* Get flash sys info */
 163	if (qla4xxx_get_flash(ha, sys_info_dma, FLASH_OFFSET_SYS_INFO,
 164			      sizeof(*sys_info)) != QLA_SUCCESS) {
 165		DEBUG2(printk("scsi%ld: %s: get_flash FLASH_OFFSET_SYS_INFO "
 166			      "failed\n", ha->host_no, __func__));
 167
 168		goto exit_get_sys_info;
 169	}
 170
 171	/* Save M.A.C. address & serial_number */
 172	memcpy(ha->my_mac, &sys_info->physAddr[0].address[0],
 173	       min(sizeof(ha->my_mac),
 174		   sizeof(sys_info->physAddr[0].address)));
 175	memcpy(ha->serial_number, &sys_info->acSerialNumber,
 176	       min(sizeof(ha->serial_number),
 177		   sizeof(sys_info->acSerialNumber)));
 178
 179	status = QLA_SUCCESS;
 180
 181exit_get_sys_info:
 182	dma_free_coherent(&ha->pdev->dev, sizeof(*sys_info), sys_info,
 183			  sys_info_dma);
 184
 185exit_get_sys_info_no_free:
 186	return status;
 187}
 188
 189/**
 190 * qla4xxx_init_local_data - initialize adapter specific local data
 191 * @ha: pointer to host adapter structure.
 192 *
 193 **/
 194static void qla4xxx_init_local_data(struct scsi_qla_host *ha)
 195{
 196	/* Initialize aen queue */
 197	ha->aen_q_count = MAX_AEN_ENTRIES;
 198}
 199
 200static uint8_t
 201qla4xxx_wait_for_ip_config(struct scsi_qla_host *ha)
 202{
 203	uint8_t ipv4_wait = 0;
 204	uint8_t ipv6_wait = 0;
 205	int8_t ip_address[IPv6_ADDR_LEN] = {0} ;
 206
 207	/* If both IPv4 & IPv6 are enabled, possibly only one
 208	 * IP address may be acquired, so check to see if we
 209	 * need to wait for another */
 210	if (is_ipv4_enabled(ha) && is_ipv6_enabled(ha)) {
 211		if (((ha->addl_fw_state & FW_ADDSTATE_DHCPv4_ENABLED) != 0) &&
 212		    ((ha->addl_fw_state &
 213				    FW_ADDSTATE_DHCPv4_LEASE_ACQUIRED) == 0)) {
 214			ipv4_wait = 1;
 215		}
 216		if (((ha->ip_config.ipv6_addl_options &
 217		      IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) != 0) &&
 218		    ((ha->ip_config.ipv6_link_local_state ==
 219		      IP_ADDRSTATE_ACQUIRING) ||
 220		     (ha->ip_config.ipv6_addr0_state ==
 221		      IP_ADDRSTATE_ACQUIRING) ||
 222		     (ha->ip_config.ipv6_addr1_state ==
 223		      IP_ADDRSTATE_ACQUIRING))) {
 224
 225			ipv6_wait = 1;
 226
 227			if ((ha->ip_config.ipv6_link_local_state ==
 228			     IP_ADDRSTATE_PREFERRED) ||
 229			    (ha->ip_config.ipv6_addr0_state ==
 230			     IP_ADDRSTATE_PREFERRED) ||
 231			    (ha->ip_config.ipv6_addr1_state ==
 232			     IP_ADDRSTATE_PREFERRED)) {
 233				DEBUG2(printk(KERN_INFO "scsi%ld: %s: "
 234					      "Preferred IP configured."
 235					      " Don't wait!\n", ha->host_no,
 236					      __func__));
 237				ipv6_wait = 0;
 238			}
 239			if (memcmp(&ha->ip_config.ipv6_default_router_addr,
 240				   ip_address, IPv6_ADDR_LEN) == 0) {
 241				DEBUG2(printk(KERN_INFO "scsi%ld: %s: "
 242					      "No Router configured. "
 243					      "Don't wait!\n", ha->host_no,
 244					      __func__));
 245				ipv6_wait = 0;
 246			}
 247			if ((ha->ip_config.ipv6_default_router_state ==
 248			     IPV6_RTRSTATE_MANUAL) &&
 249			    (ha->ip_config.ipv6_link_local_state ==
 250			     IP_ADDRSTATE_TENTATIVE) &&
 251			    (memcmp(&ha->ip_config.ipv6_link_local_addr,
 252			     &ha->ip_config.ipv6_default_router_addr, 4) ==
 253			     0)) {
 254				DEBUG2(printk("scsi%ld: %s: LinkLocal Router & "
 255					"IP configured. Don't wait!\n",
 256					ha->host_no, __func__));
 257				ipv6_wait = 0;
 258			}
 259		}
 260		if (ipv4_wait || ipv6_wait) {
 261			DEBUG2(printk("scsi%ld: %s: Wait for additional "
 262				      "IP(s) \"", ha->host_no, __func__));
 263			if (ipv4_wait)
 264				DEBUG2(printk("IPv4 "));
 265			if (ha->ip_config.ipv6_link_local_state ==
 266			    IP_ADDRSTATE_ACQUIRING)
 267				DEBUG2(printk("IPv6LinkLocal "));
 268			if (ha->ip_config.ipv6_addr0_state ==
 269			    IP_ADDRSTATE_ACQUIRING)
 270				DEBUG2(printk("IPv6Addr0 "));
 271			if (ha->ip_config.ipv6_addr1_state ==
 272			    IP_ADDRSTATE_ACQUIRING)
 273				DEBUG2(printk("IPv6Addr1 "));
 274			DEBUG2(printk("\"\n"));
 275		}
 276	}
 277
 278	return ipv4_wait|ipv6_wait;
 279}
 280
 281static int qla4_80xx_is_minidump_dma_capable(struct scsi_qla_host *ha,
 282		struct qla4_8xxx_minidump_template_hdr *md_hdr)
 283{
 284	int offset = (is_qla8022(ha)) ? QLA8022_TEMPLATE_CAP_OFFSET :
 285					QLA83XX_TEMPLATE_CAP_OFFSET;
 286	int rval = 1;
 287	uint32_t *cap_offset;
 288
 289	cap_offset = (uint32_t *)((char *)md_hdr + offset);
 290
 291	if (!(le32_to_cpu(*cap_offset) & BIT_0)) {
 292		ql4_printk(KERN_INFO, ha, "PEX DMA Not supported %d\n",
 293			   *cap_offset);
 294		rval = 0;
 295	}
 296
 297	return rval;
 298}
 299
 300/**
 301 * qla4xxx_alloc_fw_dump - Allocate memory for minidump data.
 302 * @ha: pointer to host adapter structure.
 303 **/
 304void qla4xxx_alloc_fw_dump(struct scsi_qla_host *ha)
 305{
 306	int status;
 307	uint32_t capture_debug_level;
 308	int hdr_entry_bit, k;
 309	void *md_tmp;
 310	dma_addr_t md_tmp_dma;
 311	struct qla4_8xxx_minidump_template_hdr *md_hdr;
 312	int dma_capable;
 313
 314	if (ha->fw_dump) {
 315		ql4_printk(KERN_WARNING, ha,
 316			   "Firmware dump previously allocated.\n");
 317		return;
 318	}
 319
 320	status = qla4xxx_req_template_size(ha);
 321	if (status != QLA_SUCCESS) {
 322		ql4_printk(KERN_INFO, ha,
 323			   "scsi%ld: Failed to get template size\n",
 324			   ha->host_no);
 325		return;
 326	}
 327
 328	clear_bit(AF_82XX_FW_DUMPED, &ha->flags);
 329
 330	/* Allocate memory for saving the template */
 331	md_tmp = dma_alloc_coherent(&ha->pdev->dev, ha->fw_dump_tmplt_size,
 332				    &md_tmp_dma, GFP_KERNEL);
 333	if (!md_tmp) {
 334		ql4_printk(KERN_INFO, ha,
 335			   "scsi%ld: Failed to allocate DMA memory\n",
 336			   ha->host_no);
 337		return;
 338	}
 339
 340	/* Request template */
 341	status =  qla4xxx_get_minidump_template(ha, md_tmp_dma);
 342	if (status != QLA_SUCCESS) {
 343		ql4_printk(KERN_INFO, ha,
 344			   "scsi%ld: Failed to get minidump template\n",
 345			   ha->host_no);
 346		goto alloc_cleanup;
 347	}
 348
 349	md_hdr = (struct qla4_8xxx_minidump_template_hdr *)md_tmp;
 350
 351	dma_capable = qla4_80xx_is_minidump_dma_capable(ha, md_hdr);
 352
 353	capture_debug_level = md_hdr->capture_debug_level;
 354
 355	/* Get capture mask based on module loadtime setting. */
 356	if ((ql4xmdcapmask >= 0x3 && ql4xmdcapmask <= 0x7F) ||
 357	    (ql4xmdcapmask == 0xFF && dma_capable))  {
 358		ha->fw_dump_capture_mask = ql4xmdcapmask;
 359	} else {
 360		if (ql4xmdcapmask == 0xFF)
 361			ql4_printk(KERN_INFO, ha, "Falling back to default capture mask, as PEX DMA is not supported\n");
 362		ha->fw_dump_capture_mask = capture_debug_level;
 363	}
 364
 365	md_hdr->driver_capture_mask = ha->fw_dump_capture_mask;
 366
 367	DEBUG2(ql4_printk(KERN_INFO, ha, "Minimum num of entries = %d\n",
 368			  md_hdr->num_of_entries));
 369	DEBUG2(ql4_printk(KERN_INFO, ha, "Dump template size  = %d\n",
 370			  ha->fw_dump_tmplt_size));
 371	DEBUG2(ql4_printk(KERN_INFO, ha, "Selected Capture mask =0x%x\n",
 372			  ha->fw_dump_capture_mask));
 373
 374	/* Calculate fw_dump_size */
 375	for (hdr_entry_bit = 0x2, k = 1; (hdr_entry_bit & 0xFF);
 376	     hdr_entry_bit <<= 1, k++) {
 377		if (hdr_entry_bit & ha->fw_dump_capture_mask)
 378			ha->fw_dump_size += md_hdr->capture_size_array[k];
 379	}
 380
 381	/* Total firmware dump size including command header */
 382	ha->fw_dump_size += ha->fw_dump_tmplt_size;
 383	ha->fw_dump = vmalloc(ha->fw_dump_size);
 384	if (!ha->fw_dump)
 385		goto alloc_cleanup;
 386
 387	DEBUG2(ql4_printk(KERN_INFO, ha,
 388			  "Minidump Template Size = 0x%x KB\n",
 389			  ha->fw_dump_tmplt_size));
 390	DEBUG2(ql4_printk(KERN_INFO, ha,
 391			  "Total Minidump size = 0x%x KB\n", ha->fw_dump_size));
 392
 393	memcpy(ha->fw_dump, md_tmp, ha->fw_dump_tmplt_size);
 394	ha->fw_dump_tmplt_hdr = ha->fw_dump;
 395
 396alloc_cleanup:
 397	dma_free_coherent(&ha->pdev->dev, ha->fw_dump_tmplt_size,
 398			  md_tmp, md_tmp_dma);
 399}
 400
 401static int qla4xxx_fw_ready(struct scsi_qla_host *ha)
 402{
 403	uint32_t timeout_count;
 404	int ready = 0;
 405
 406	DEBUG2(ql4_printk(KERN_INFO, ha, "Waiting for Firmware Ready..\n"));
 407	for (timeout_count = ADAPTER_INIT_TOV; timeout_count > 0;
 408	     timeout_count--) {
 409		if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
 410			qla4xxx_get_dhcp_ip_address(ha);
 411
 412		/* Get firmware state. */
 413		if (qla4xxx_get_firmware_state(ha) != QLA_SUCCESS) {
 414			DEBUG2(printk("scsi%ld: %s: unable to get firmware "
 415				      "state\n", ha->host_no, __func__));
 416			break;
 417		}
 418
 419		if (ha->firmware_state & FW_STATE_ERROR) {
 420			DEBUG2(printk("scsi%ld: %s: an unrecoverable error has"
 421				      " occurred\n", ha->host_no, __func__));
 422			break;
 423
 424		}
 425		if (ha->firmware_state & FW_STATE_CONFIG_WAIT) {
 426			/*
 427			 * The firmware has not yet been issued an Initialize
 428			 * Firmware command, so issue it now.
 429			 */
 430			if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR)
 431				break;
 432
 433			/* Go back and test for ready state - no wait. */
 434			continue;
 435		}
 436
 437		if (ha->firmware_state & FW_STATE_WAIT_AUTOCONNECT) {
 438			DEBUG2(printk(KERN_INFO "scsi%ld: %s: fwstate:"
 439				      "AUTOCONNECT in progress\n",
 440				      ha->host_no, __func__));
 441		}
 442
 443		if (ha->firmware_state & FW_STATE_CONFIGURING_IP) {
 444			DEBUG2(printk(KERN_INFO "scsi%ld: %s: fwstate:"
 445				      " CONFIGURING IP\n",
 446				      ha->host_no, __func__));
 447			/*
 448			 * Check for link state after 15 secs and if link is
 449			 * still DOWN then, cable is unplugged. Ignore "DHCP
 450			 * in Progress/CONFIGURING IP" bit to check if firmware
 451			 * is in ready state or not after 15 secs.
 452			 * This is applicable for both 2.x & 3.x firmware
 453			 */
 454			if (timeout_count <= (ADAPTER_INIT_TOV - 15)) {
 455				if (ha->addl_fw_state & FW_ADDSTATE_LINK_UP) {
 456					DEBUG2(printk(KERN_INFO "scsi%ld: %s:"
 457						  " LINK UP (Cable plugged)\n",
 458						  ha->host_no, __func__));
 459				} else if (ha->firmware_state &
 460					  (FW_STATE_CONFIGURING_IP |
 461							     FW_STATE_READY)) {
 462					DEBUG2(printk(KERN_INFO "scsi%ld: %s: "
 463						"LINK DOWN (Cable unplugged)\n",
 464						ha->host_no, __func__));
 465					ha->firmware_state = FW_STATE_READY;
 466				}
 467			}
 468		}
 469
 470		if (ha->firmware_state == FW_STATE_READY) {
 471			/* If DHCP IP Addr is available, retrieve it now. */
 472			if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR,
 473								&ha->dpc_flags))
 474				qla4xxx_get_dhcp_ip_address(ha);
 475
 476			if (!qla4xxx_wait_for_ip_config(ha) ||
 477							timeout_count == 1) {
 478				DEBUG2(ql4_printk(KERN_INFO, ha,
 479				    "Firmware Ready..\n"));
 480				/* The firmware is ready to process SCSI
 481				   commands. */
 482				DEBUG2(ql4_printk(KERN_INFO, ha,
 483					"scsi%ld: %s: MEDIA TYPE"
 484					" - %s\n", ha->host_no,
 485					__func__, (ha->addl_fw_state &
 486					FW_ADDSTATE_OPTICAL_MEDIA)
 487					!= 0 ? "OPTICAL" : "COPPER"));
 488				DEBUG2(ql4_printk(KERN_INFO, ha,
 489					"scsi%ld: %s: DHCPv4 STATE"
 490					" Enabled %s\n", ha->host_no,
 491					 __func__, (ha->addl_fw_state &
 492					 FW_ADDSTATE_DHCPv4_ENABLED) != 0 ?
 493					"YES" : "NO"));
 494				DEBUG2(ql4_printk(KERN_INFO, ha,
 495					"scsi%ld: %s: LINK %s\n",
 496					ha->host_no, __func__,
 497					(ha->addl_fw_state &
 498					 FW_ADDSTATE_LINK_UP) != 0 ?
 499					"UP" : "DOWN"));
 500				DEBUG2(ql4_printk(KERN_INFO, ha,
 501					"scsi%ld: %s: iSNS Service "
 502					"Started %s\n",
 503					ha->host_no, __func__,
 504					(ha->addl_fw_state &
 505					 FW_ADDSTATE_ISNS_SVC_ENABLED) != 0 ?
 506					"YES" : "NO"));
 507
 508				ready = 1;
 509				break;
 510			}
 511		}
 512		DEBUG2(printk("scsi%ld: %s: waiting on fw, state=%x:%x - "
 513			      "seconds expired= %d\n", ha->host_no, __func__,
 514			      ha->firmware_state, ha->addl_fw_state,
 515			      timeout_count));
 516		if (is_qla4032(ha) &&
 517			!(ha->addl_fw_state & FW_ADDSTATE_LINK_UP) &&
 518			(timeout_count < ADAPTER_INIT_TOV - 5)) {
 519			break;
 520		}
 521
 522		msleep(1000);
 523	}			/* end of for */
 524
 525	if (timeout_count <= 0)
 526		DEBUG2(printk("scsi%ld: %s: FW Initialization timed out!\n",
 527			      ha->host_no, __func__));
 528
 529	if (ha->firmware_state & FW_STATE_CONFIGURING_IP) {
 530		DEBUG2(printk("scsi%ld: %s: FW initialized, but is reporting "
 531			      "it's waiting to configure an IP address\n",
 532			       ha->host_no, __func__));
 533		ready = 1;
 534	} else if (ha->firmware_state & FW_STATE_WAIT_AUTOCONNECT) {
 535		DEBUG2(printk("scsi%ld: %s: FW initialized, but "
 536			      "auto-discovery still in process\n",
 537			       ha->host_no, __func__));
 538		ready = 1;
 539	}
 540
 541	return ready;
 542}
 543
 544/**
 545 * qla4xxx_init_firmware - initializes the firmware.
 546 * @ha: pointer to host adapter structure.
 547 *
 548 **/
 549static int qla4xxx_init_firmware(struct scsi_qla_host *ha)
 550{
 551	int status = QLA_ERROR;
 552
 553	if (is_aer_supported(ha) &&
 554	    test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
 555		return status;
 556
 557	/* For 82xx, stop firmware before initializing because if BIOS
 558	 * has previously initialized firmware, then driver's initialize
 559	 * firmware will fail. */
 560	if (is_qla80XX(ha))
 561		qla4_8xxx_stop_firmware(ha);
 562
 563	ql4_printk(KERN_INFO, ha, "Initializing firmware..\n");
 564	if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR) {
 565		DEBUG2(printk("scsi%ld: %s: Failed to initialize firmware "
 566			      "control block\n", ha->host_no, __func__));
 567		return status;
 568	}
 569
 570	if (!qla4xxx_fw_ready(ha))
 571		return status;
 572
 573	if (is_qla80XX(ha) && !test_bit(AF_INIT_DONE, &ha->flags))
 574		qla4xxx_alloc_fw_dump(ha);
 575
 576	return qla4xxx_get_firmware_status(ha);
 577}
 578
 579static void qla4xxx_set_model_info(struct scsi_qla_host *ha)
 580{
 581	uint16_t board_id_string[8];
 582	int i;
 583	int size = sizeof(ha->nvram->isp4022.boardIdStr);
 584	int offset = offsetof(struct eeprom_data, isp4022.boardIdStr) / 2;
 585
 586	for (i = 0; i < (size / 2) ; i++) {
 587		board_id_string[i] = rd_nvram_word(ha, offset);
 588		offset += 1;
 589	}
 590
 591	memcpy(ha->model_name, board_id_string, size);
 592}
 593
 594static int qla4xxx_config_nvram(struct scsi_qla_host *ha)
 595{
 596	unsigned long flags;
 597	union external_hw_config_reg extHwConfig;
 598
 599	DEBUG2(printk("scsi%ld: %s: Get EEProm parameters \n", ha->host_no,
 600		      __func__));
 601	if (ql4xxx_lock_flash(ha) != QLA_SUCCESS)
 602		return QLA_ERROR;
 603	if (ql4xxx_lock_nvram(ha) != QLA_SUCCESS) {
 604		ql4xxx_unlock_flash(ha);
 605		return QLA_ERROR;
 606	}
 607
 608	/* Get EEPRom Parameters from NVRAM and validate */
 609	ql4_printk(KERN_INFO, ha, "Configuring NVRAM ...\n");
 610	if (qla4xxx_is_nvram_configuration_valid(ha) == QLA_SUCCESS) {
 611		spin_lock_irqsave(&ha->hardware_lock, flags);
 612		extHwConfig.Asuint32_t =
 613			rd_nvram_word(ha, eeprom_ext_hw_conf_offset(ha));
 614		spin_unlock_irqrestore(&ha->hardware_lock, flags);
 615	} else {
 616		ql4_printk(KERN_WARNING, ha,
 617		    "scsi%ld: %s: EEProm checksum invalid.  "
 618		    "Please update your EEPROM\n", ha->host_no,
 619		    __func__);
 620
 621		/* Attempt to set defaults */
 622		if (is_qla4010(ha))
 623			extHwConfig.Asuint32_t = 0x1912;
 624		else if (is_qla4022(ha) | is_qla4032(ha))
 625			extHwConfig.Asuint32_t = 0x0023;
 626		else
 627			return QLA_ERROR;
 628	}
 629
 630	if (is_qla4022(ha) || is_qla4032(ha))
 631		qla4xxx_set_model_info(ha);
 632	else
 633		strcpy(ha->model_name, "QLA4010");
 634
 635	DEBUG(printk("scsi%ld: %s: Setting extHwConfig to 0xFFFF%04x\n",
 636		     ha->host_no, __func__, extHwConfig.Asuint32_t));
 637
 638	spin_lock_irqsave(&ha->hardware_lock, flags);
 639	writel((0xFFFF << 16) | extHwConfig.Asuint32_t, isp_ext_hw_conf(ha));
 640	readl(isp_ext_hw_conf(ha));
 641	spin_unlock_irqrestore(&ha->hardware_lock, flags);
 642
 643	ql4xxx_unlock_nvram(ha);
 644	ql4xxx_unlock_flash(ha);
 645
 646	return QLA_SUCCESS;
 647}
 648
 649/**
 650 * qla4_8xxx_pci_config() - Setup ISP82xx PCI configuration registers.
 651 * @ha: HA context
 652 */
 653void qla4_8xxx_pci_config(struct scsi_qla_host *ha)
 654{
 655	pci_set_master(ha->pdev);
 656}
 657
 658void qla4xxx_pci_config(struct scsi_qla_host *ha)
 659{
 660	uint16_t w;
 661	int status;
 662
 663	ql4_printk(KERN_INFO, ha, "Configuring PCI space...\n");
 664
 665	pci_set_master(ha->pdev);
 666	status = pci_set_mwi(ha->pdev);
 667	if (status)
 668		ql4_printk(KERN_WARNING, ha, "Failed to set MWI\n");
 669
 670	/*
 671	 * We want to respect framework's setting of PCI configuration space
 672	 * command register and also want to make sure that all bits of
 673	 * interest to us are properly set in command register.
 674	 */
 675	pci_read_config_word(ha->pdev, PCI_COMMAND, &w);
 676	w |= PCI_COMMAND_PARITY | PCI_COMMAND_SERR;
 677	w &= ~PCI_COMMAND_INTX_DISABLE;
 678	pci_write_config_word(ha->pdev, PCI_COMMAND, w);
 679}
 680
 681static int qla4xxx_start_firmware_from_flash(struct scsi_qla_host *ha)
 682{
 683	int status = QLA_ERROR;
 684	unsigned long max_wait_time;
 685	unsigned long flags;
 686	uint32_t mbox_status;
 687
 688	ql4_printk(KERN_INFO, ha, "Starting firmware ...\n");
 689
 690	/*
 691	 * Start firmware from flash ROM
 692	 *
 693	 * WORKAROUND: Stuff a non-constant value that the firmware can
 694	 * use as a seed for a random number generator in MB7 prior to
 695	 * setting BOOT_ENABLE.	 Fixes problem where the TCP
 696	 * connections use the same TCP ports after each reboot,
 697	 * causing some connections to not get re-established.
 698	 */
 699	DEBUG(printk("scsi%d: %s: Start firmware from flash ROM\n",
 700		     ha->host_no, __func__));
 701
 702	spin_lock_irqsave(&ha->hardware_lock, flags);
 703	writel(jiffies, &ha->reg->mailbox[7]);
 704	if (is_qla4022(ha) | is_qla4032(ha))
 705		writel(set_rmask(NVR_WRITE_ENABLE),
 706		       &ha->reg->u1.isp4022.nvram);
 707
 708        writel(2, &ha->reg->mailbox[6]);
 709        readl(&ha->reg->mailbox[6]);
 710
 711	writel(set_rmask(CSR_BOOT_ENABLE), &ha->reg->ctrl_status);
 712	readl(&ha->reg->ctrl_status);
 713	spin_unlock_irqrestore(&ha->hardware_lock, flags);
 714
 715	/* Wait for firmware to come UP. */
 716	DEBUG2(printk(KERN_INFO "scsi%ld: %s: Wait up to %d seconds for "
 717		      "boot firmware to complete...\n",
 718		      ha->host_no, __func__, FIRMWARE_UP_TOV));
 719	max_wait_time = jiffies + (FIRMWARE_UP_TOV * HZ);
 720	do {
 721		uint32_t ctrl_status;
 722
 723		spin_lock_irqsave(&ha->hardware_lock, flags);
 724		ctrl_status = readw(&ha->reg->ctrl_status);
 725		mbox_status = readw(&ha->reg->mailbox[0]);
 726		spin_unlock_irqrestore(&ha->hardware_lock, flags);
 727
 728		if (ctrl_status & set_rmask(CSR_SCSI_PROCESSOR_INTR))
 729			break;
 730		if (mbox_status == MBOX_STS_COMMAND_COMPLETE)
 731			break;
 732
 733		DEBUG2(printk(KERN_INFO "scsi%ld: %s: Waiting for boot "
 734		    "firmware to complete... ctrl_sts=0x%x, remaining=%ld\n",
 735		    ha->host_no, __func__, ctrl_status, max_wait_time));
 736
 737		msleep_interruptible(250);
 738	} while (!time_after_eq(jiffies, max_wait_time));
 739
 740	if (mbox_status == MBOX_STS_COMMAND_COMPLETE) {
 741		DEBUG(printk(KERN_INFO "scsi%ld: %s: Firmware has started\n",
 742			     ha->host_no, __func__));
 743
 744		spin_lock_irqsave(&ha->hardware_lock, flags);
 745		writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
 746		       &ha->reg->ctrl_status);
 747		readl(&ha->reg->ctrl_status);
 748		spin_unlock_irqrestore(&ha->hardware_lock, flags);
 749
 750		status = QLA_SUCCESS;
 751	} else {
 752		printk(KERN_INFO "scsi%ld: %s: Boot firmware failed "
 753		       "-  mbox status 0x%x\n", ha->host_no, __func__,
 754		       mbox_status);
 755		status = QLA_ERROR;
 756	}
 757	return status;
 758}
 759
 760int ql4xxx_lock_drvr_wait(struct scsi_qla_host *a)
 761{
 762#define QL4_LOCK_DRVR_WAIT	60
 763#define QL4_LOCK_DRVR_SLEEP	1
 764
 765	int drvr_wait = QL4_LOCK_DRVR_WAIT;
 766	while (drvr_wait) {
 767		if (ql4xxx_lock_drvr(a) == 0) {
 768			ssleep(QL4_LOCK_DRVR_SLEEP);
 769			DEBUG2(printk("scsi%ld: %s: Waiting for "
 770				      "Global Init Semaphore(%d)...\n",
 771				      a->host_no,
 772				      __func__, drvr_wait));
 773			drvr_wait -= QL4_LOCK_DRVR_SLEEP;
 774		} else {
 775			DEBUG2(printk("scsi%ld: %s: Global Init Semaphore "
 776				      "acquired\n", a->host_no, __func__));
 777			return QLA_SUCCESS;
 778		}
 779	}
 780	return QLA_ERROR;
 781}
 782
 783/**
 784 * qla4xxx_start_firmware - starts qla4xxx firmware
 785 * @ha: Pointer to host adapter structure.
 786 *
 787 * This routine performs the necessary steps to start the firmware for
 788 * the QLA4010 adapter.
 789 **/
 790int qla4xxx_start_firmware(struct scsi_qla_host *ha)
 791{
 792	unsigned long flags = 0;
 793	uint32_t mbox_status;
 794	int status = QLA_ERROR;
 795	int soft_reset = 1;
 796	int config_chip = 0;
 797
 798	if (is_qla4022(ha) | is_qla4032(ha))
 799		ql4xxx_set_mac_number(ha);
 800
 801	if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
 802		return QLA_ERROR;
 803
 804	spin_lock_irqsave(&ha->hardware_lock, flags);
 805
 806	DEBUG2(printk("scsi%ld: %s: port_ctrl	= 0x%08X\n", ha->host_no,
 807		      __func__, readw(isp_port_ctrl(ha))));
 808	DEBUG(printk("scsi%ld: %s: port_status = 0x%08X\n", ha->host_no,
 809		     __func__, readw(isp_port_status(ha))));
 810
 811	/* Is Hardware already initialized? */
 812	if ((readw(isp_port_ctrl(ha)) & 0x8000) != 0) {
 813		DEBUG(printk("scsi%ld: %s: Hardware has already been "
 814			     "initialized\n", ha->host_no, __func__));
 815
 816		/* Receive firmware boot acknowledgement */
 817		mbox_status = readw(&ha->reg->mailbox[0]);
 818
 819		DEBUG2(printk("scsi%ld: %s: H/W Config complete - mbox[0]= "
 820			      "0x%x\n", ha->host_no, __func__, mbox_status));
 821
 822		/* Is firmware already booted? */
 823		if (mbox_status == 0) {
 824			/* F/W not running, must be config by net driver */
 825			config_chip = 1;
 826			soft_reset = 0;
 827		} else {
 828			writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
 829			       &ha->reg->ctrl_status);
 830			readl(&ha->reg->ctrl_status);
 831			writel(set_rmask(CSR_SCSI_COMPLETION_INTR),
 832			       &ha->reg->ctrl_status);
 833			readl(&ha->reg->ctrl_status);
 834			spin_unlock_irqrestore(&ha->hardware_lock, flags);
 835			if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS) {
 836				DEBUG2(printk("scsi%ld: %s: Get firmware "
 837					      "state -- state = 0x%x\n",
 838					      ha->host_no,
 839					      __func__, ha->firmware_state));
 840				/* F/W is running */
 841				if (ha->firmware_state &
 842				    FW_STATE_CONFIG_WAIT) {
 843					DEBUG2(printk("scsi%ld: %s: Firmware "
 844						      "in known state -- "
 845						      "config and "
 846						      "boot, state = 0x%x\n",
 847						      ha->host_no, __func__,
 848						      ha->firmware_state));
 849					config_chip = 1;
 850					soft_reset = 0;
 851				}
 852			} else {
 853				DEBUG2(printk("scsi%ld: %s: Firmware in "
 854					      "unknown state -- resetting,"
 855					      " state = "
 856					      "0x%x\n", ha->host_no, __func__,
 857					      ha->firmware_state));
 858			}
 859			spin_lock_irqsave(&ha->hardware_lock, flags);
 860		}
 861	} else {
 862		DEBUG(printk("scsi%ld: %s: H/W initialization hasn't been "
 863			     "started - resetting\n", ha->host_no, __func__));
 864	}
 865	spin_unlock_irqrestore(&ha->hardware_lock, flags);
 866
 867	DEBUG(printk("scsi%ld: %s: Flags soft_rest=%d, config= %d\n ",
 868		     ha->host_no, __func__, soft_reset, config_chip));
 869	if (soft_reset) {
 870		DEBUG(printk("scsi%ld: %s: Issue Soft Reset\n", ha->host_no,
 871			     __func__));
 872		status = qla4xxx_soft_reset(ha);	/* NOTE: acquires drvr
 873							 * lock again, but ok */
 874		if (status == QLA_ERROR) {
 875			DEBUG(printk("scsi%d: %s: Soft Reset failed!\n",
 876				     ha->host_no, __func__));
 877			ql4xxx_unlock_drvr(ha);
 878			return QLA_ERROR;
 879		}
 880		config_chip = 1;
 881
 882		/* Reset clears the semaphore, so acquire again */
 883		if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
 884			return QLA_ERROR;
 885	}
 886
 887	if (config_chip) {
 888		if ((status = qla4xxx_config_nvram(ha)) == QLA_SUCCESS)
 889			status = qla4xxx_start_firmware_from_flash(ha);
 890	}
 891
 892	ql4xxx_unlock_drvr(ha);
 893	if (status == QLA_SUCCESS) {
 894		if (test_and_clear_bit(AF_GET_CRASH_RECORD, &ha->flags))
 895			qla4xxx_get_crash_record(ha);
 896
 897		qla4xxx_init_rings(ha);
 898	} else {
 899		DEBUG(printk("scsi%ld: %s: Firmware has NOT started\n",
 900			     ha->host_no, __func__));
 901	}
 902	return status;
 903}
 904/**
 905 * qla4xxx_free_ddb_index - Free DDBs reserved by firmware
 906 * @ha: pointer to adapter structure
 907 *
 908 * Since firmware is not running in autoconnect mode the DDB indices should
 909 * be freed so that when login happens from user space there are free DDB
 910 * indices available.
 911 **/
 912void qla4xxx_free_ddb_index(struct scsi_qla_host *ha)
 913{
 914	int max_ddbs;
 915	int ret;
 916	uint32_t idx = 0, next_idx = 0;
 917	uint32_t state = 0, conn_err = 0;
 918
 919	max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
 920				     MAX_DEV_DB_ENTRIES;
 921
 922	for (idx = 0; idx < max_ddbs; idx = next_idx) {
 923		ret = qla4xxx_get_fwddb_entry(ha, idx, NULL, 0, NULL,
 924					      &next_idx, &state, &conn_err,
 925						NULL, NULL);
 926		if (ret == QLA_ERROR) {
 927			next_idx++;
 928			continue;
 929		}
 930		if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
 931		    state == DDB_DS_SESSION_FAILED) {
 932			DEBUG2(ql4_printk(KERN_INFO, ha,
 933					  "Freeing DDB index = 0x%x\n", idx));
 934			ret = qla4xxx_clear_ddb_entry(ha, idx);
 935			if (ret == QLA_ERROR)
 936				ql4_printk(KERN_ERR, ha,
 937					   "Unable to clear DDB index = "
 938					   "0x%x\n", idx);
 939		}
 940		if (next_idx == 0)
 941			break;
 942	}
 943}
 944
 945/**
 946 * qla4xxx_initialize_adapter - initiailizes hba
 947 * @ha: Pointer to host adapter structure.
 948 * @is_reset: Is this init path or reset path
 949 *
 950 * This routine parforms all of the steps necessary to initialize the adapter.
 951 *
 952 **/
 953int qla4xxx_initialize_adapter(struct scsi_qla_host *ha, int is_reset)
 954{
 955	int status = QLA_ERROR;
 956
 957	ha->eeprom_cmd_data = 0;
 958
 959	ql4_printk(KERN_INFO, ha, "Configuring PCI space...\n");
 960	ha->isp_ops->pci_config(ha);
 961
 962	ha->isp_ops->disable_intrs(ha);
 963
 964	/* Initialize the Host adapter request/response queues and firmware */
 965	if (ha->isp_ops->start_firmware(ha) == QLA_ERROR)
 966		goto exit_init_hba;
 967
 968	/*
 969	 * For ISP83XX, mailbox and IOCB interrupts are enabled separately.
 970	 * Mailbox interrupts must be enabled prior to issuing any mailbox
 971	 * command in order to prevent the possibility of losing interrupts
 972	 * while switching from polling to interrupt mode. IOCB interrupts are
 973	 * enabled via isp_ops->enable_intrs.
 974	 */
 975	if (is_qla8032(ha) || is_qla8042(ha))
 976		qla4_83xx_enable_mbox_intrs(ha);
 977
 978	if (qla4xxx_about_firmware(ha) == QLA_ERROR)
 979		goto exit_init_hba;
 980
 981	if (ha->isp_ops->get_sys_info(ha) == QLA_ERROR)
 982		goto exit_init_hba;
 983
 984	qla4xxx_init_local_data(ha);
 985
 986	status = qla4xxx_init_firmware(ha);
 987	if (status == QLA_ERROR)
 988		goto exit_init_hba;
 989
 990	if (is_reset == RESET_ADAPTER)
 991		qla4xxx_build_ddb_list(ha, is_reset);
 992
 993	set_bit(AF_ONLINE, &ha->flags);
 994
 995exit_init_hba:
 996	DEBUG2(printk("scsi%ld: initialize adapter: %s\n", ha->host_no,
 997	    status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));
 998	return status;
 999}
1000
1001int qla4xxx_ddb_change(struct scsi_qla_host *ha, uint32_t fw_ddb_index,
1002		       struct ddb_entry *ddb_entry, uint32_t state)
1003{
1004	uint32_t old_fw_ddb_device_state;
1005	int status = QLA_ERROR;
1006
1007	old_fw_ddb_device_state = ddb_entry->fw_ddb_device_state;
1008	DEBUG2(ql4_printk(KERN_INFO, ha,
1009			  "%s: DDB - old state = 0x%x, new state = 0x%x for "
1010			  "index [%d]\n", __func__,
1011			  ddb_entry->fw_ddb_device_state, state, fw_ddb_index));
1012
1013	ddb_entry->fw_ddb_device_state = state;
1014
1015	switch (old_fw_ddb_device_state) {
1016	case DDB_DS_LOGIN_IN_PROCESS:
1017		switch (state) {
1018		case DDB_DS_SESSION_ACTIVE:
1019		case DDB_DS_DISCOVERY:
1020			qla4xxx_update_session_conn_param(ha, ddb_entry);
1021			ddb_entry->unblock_sess(ddb_entry->sess);
1022			status = QLA_SUCCESS;
1023			break;
1024		case DDB_DS_SESSION_FAILED:
1025		case DDB_DS_NO_CONNECTION_ACTIVE:
1026			iscsi_conn_login_event(ddb_entry->conn,
1027					       ISCSI_CONN_STATE_FREE);
1028			status = QLA_SUCCESS;
1029			break;
1030		}
1031		break;
1032	case DDB_DS_SESSION_ACTIVE:
1033	case DDB_DS_DISCOVERY:
1034		switch (state) {
1035		case DDB_DS_SESSION_FAILED:
1036			/*
1037			 * iscsi_session failure  will cause userspace to
1038			 * stop the connection which in turn would block the
1039			 * iscsi_session and start relogin
1040			 */
1041			iscsi_session_failure(ddb_entry->sess->dd_data,
1042					      ISCSI_ERR_CONN_FAILED);
1043			status = QLA_SUCCESS;
1044			break;
1045		case DDB_DS_NO_CONNECTION_ACTIVE:
1046			clear_bit(fw_ddb_index, ha->ddb_idx_map);
1047			status = QLA_SUCCESS;
1048			break;
1049		}
1050		break;
1051	case DDB_DS_SESSION_FAILED:
1052		switch (state) {
1053		case DDB_DS_SESSION_ACTIVE:
1054		case DDB_DS_DISCOVERY:
1055			ddb_entry->unblock_sess(ddb_entry->sess);
1056			qla4xxx_update_session_conn_param(ha, ddb_entry);
1057			status = QLA_SUCCESS;
1058			break;
1059		case DDB_DS_SESSION_FAILED:
1060			iscsi_session_failure(ddb_entry->sess->dd_data,
1061					      ISCSI_ERR_CONN_FAILED);
1062			status = QLA_SUCCESS;
1063			break;
1064		}
1065		break;
1066	default:
1067		DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Unknown Event\n",
1068				__func__));
1069		break;
1070	}
1071	return status;
1072}
1073
1074void qla4xxx_arm_relogin_timer(struct ddb_entry *ddb_entry)
1075{
1076	/*
1077	 * This triggers a relogin.  After the relogin_timer
1078	 * expires, the relogin gets scheduled.  We must wait a
1079	 * minimum amount of time since receiving an 0x8014 AEN
1080	 * with failed device_state or a logout response before
1081	 * we can issue another relogin.
1082	 *
1083	 * Firmware pads this timeout: (time2wait +1).
1084	 * Driver retry to login should be longer than F/W.
1085	 * Otherwise F/W will fail
1086	 * set_ddb() mbx cmd with 0x4005 since it still
1087	 * counting down its time2wait.
1088	 */
1089	atomic_set(&ddb_entry->relogin_timer, 0);
1090	atomic_set(&ddb_entry->retry_relogin_timer,
1091		   ddb_entry->default_time2wait + 4);
1092
1093}
1094
1095int qla4xxx_flash_ddb_change(struct scsi_qla_host *ha, uint32_t fw_ddb_index,
1096			     struct ddb_entry *ddb_entry, uint32_t state)
1097{
1098	uint32_t old_fw_ddb_device_state;
1099	int status = QLA_ERROR;
1100
1101	old_fw_ddb_device_state = ddb_entry->fw_ddb_device_state;
1102	DEBUG2(ql4_printk(KERN_INFO, ha,
1103			  "%s: DDB - old state = 0x%x, new state = 0x%x for "
1104			  "index [%d]\n", __func__,
1105			  ddb_entry->fw_ddb_device_state, state, fw_ddb_index));
1106
1107	ddb_entry->fw_ddb_device_state = state;
1108
1109	switch (old_fw_ddb_device_state) {
1110	case DDB_DS_LOGIN_IN_PROCESS:
1111	case DDB_DS_NO_CONNECTION_ACTIVE:
1112		switch (state) {
1113		case DDB_DS_SESSION_ACTIVE:
1114			ddb_entry->unblock_sess(ddb_entry->sess);
1115			qla4xxx_update_session_conn_fwddb_param(ha, ddb_entry);
1116			status = QLA_SUCCESS;
1117			break;
1118		case DDB_DS_SESSION_FAILED:
1119			iscsi_block_session(ddb_entry->sess);
1120			if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
1121				qla4xxx_arm_relogin_timer(ddb_entry);
1122			status = QLA_SUCCESS;
1123			break;
1124		}
1125		break;
1126	case DDB_DS_SESSION_ACTIVE:
1127		switch (state) {
1128		case DDB_DS_SESSION_FAILED:
1129			iscsi_block_session(ddb_entry->sess);
1130			if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
1131				qla4xxx_arm_relogin_timer(ddb_entry);
1132			status = QLA_SUCCESS;
1133			break;
1134		}
1135		break;
1136	case DDB_DS_SESSION_FAILED:
1137		switch (state) {
1138		case DDB_DS_SESSION_ACTIVE:
1139			ddb_entry->unblock_sess(ddb_entry->sess);
1140			qla4xxx_update_session_conn_fwddb_param(ha, ddb_entry);
1141			status = QLA_SUCCESS;
1142			break;
1143		case DDB_DS_SESSION_FAILED:
1144			if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
1145				qla4xxx_arm_relogin_timer(ddb_entry);
1146			status = QLA_SUCCESS;
1147			break;
1148		}
1149		break;
1150	default:
1151		DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Unknown Event\n",
1152				  __func__));
1153		break;
1154	}
1155	return status;
1156}
1157
1158/**
1159 * qla4xxx_process_ddb_changed - process ddb state change
1160 * @ha: Pointer to host adapter structure.
1161 * @fw_ddb_index: Firmware's device database index
1162 * @state: Device state
1163 * @conn_err: Unused
1164 *
1165 * This routine processes a Decive Database Changed AEN Event.
1166 **/
1167int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha,
1168				uint32_t fw_ddb_index,
1169				uint32_t state, uint32_t conn_err)
1170{
1171	struct ddb_entry *ddb_entry;
1172
1173	/* check for out of range index */
1174	if (fw_ddb_index >= MAX_DDB_ENTRIES)
1175		goto exit_ddb_event;
1176
1177	/* Get the corresponging ddb entry */
1178	ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, fw_ddb_index);
1179	/* Device does not currently exist in our database. */
1180	if (ddb_entry == NULL) {
1181		ql4_printk(KERN_ERR, ha, "%s: No ddb_entry at FW index [%d]\n",
1182			   __func__, fw_ddb_index);
1183
1184		if (state == DDB_DS_NO_CONNECTION_ACTIVE)
1185			clear_bit(fw_ddb_index, ha->ddb_idx_map);
1186
1187		goto exit_ddb_event;
1188	}
1189
1190	ddb_entry->ddb_change(ha, fw_ddb_index, ddb_entry, state);
1191
1192exit_ddb_event:
1193	return QLA_ERROR;
1194}
1195
1196/**
1197 * qla4xxx_login_flash_ddb - Login to target (DDB)
1198 * @cls_session: Pointer to the session to login
1199 *
1200 * This routine logins to the target.
1201 * Issues setddb and conn open mbx
1202 **/
1203void qla4xxx_login_flash_ddb(struct iscsi_cls_session *cls_session)
1204{
1205	struct iscsi_session *sess;
1206	struct ddb_entry *ddb_entry;
1207	struct scsi_qla_host *ha;
1208	struct dev_db_entry *fw_ddb_entry = NULL;
1209	dma_addr_t fw_ddb_dma;
1210	uint32_t mbx_sts = 0;
1211	int ret;
1212
1213	sess = cls_session->dd_data;
1214	ddb_entry = sess->dd_data;
1215	ha =  ddb_entry->ha;
1216
1217	if (!test_bit(AF_LINK_UP, &ha->flags))
1218		return;
1219
1220	if (ddb_entry->ddb_type != FLASH_DDB) {
1221		DEBUG2(ql4_printk(KERN_INFO, ha,
1222				  "Skipping login to non FLASH DB"));
1223		goto exit_login;
1224	}
1225
1226	fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
1227				      &fw_ddb_dma);
1228	if (fw_ddb_entry == NULL) {
1229		DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
1230		goto exit_login;
1231	}
1232
1233	if (ddb_entry->fw_ddb_index == INVALID_ENTRY) {
1234		ret = qla4xxx_get_ddb_index(ha, &ddb_entry->fw_ddb_index);
1235		if (ret == QLA_ERROR)
1236			goto exit_login;
1237
1238		ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] = ddb_entry;
1239		ha->tot_ddbs++;
1240	}
1241
1242	memcpy(fw_ddb_entry, &ddb_entry->fw_ddb_entry,
1243	       sizeof(struct dev_db_entry));
1244	ddb_entry->sess->target_id = ddb_entry->fw_ddb_index;
1245
1246	ret = qla4xxx_set_ddb_entry(ha, ddb_entry->fw_ddb_index,
1247				    fw_ddb_dma, &mbx_sts);
1248	if (ret == QLA_ERROR) {
1249		DEBUG2(ql4_printk(KERN_ERR, ha, "Set DDB failed\n"));
1250		goto exit_login;
1251	}
1252
1253	ddb_entry->fw_ddb_device_state = DDB_DS_LOGIN_IN_PROCESS;
1254	ret = qla4xxx_conn_open(ha, ddb_entry->fw_ddb_index);
1255	if (ret == QLA_ERROR) {
1256		ql4_printk(KERN_ERR, ha, "%s: Login failed: %s\n", __func__,
1257			   sess->targetname);
1258		goto exit_login;
1259	}
1260
1261exit_login:
1262	if (fw_ddb_entry)
1263		dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
1264}
1265