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[/] [or1k_soc_on_altera_embedded_dev_kit/] [trunk/] [linux-2.6/] [linux-2.6.24/] [drivers/] [scsi/] [qla4xxx/] [ql4_init.c] - Blame information for rev 3

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1 3 xianfeng 
/*
2 
 * QLogic iSCSI HBA Driver
3 
 * Copyright (c)  2003-2006 QLogic Corporation
4 
 *
5 
 * See LICENSE.qla4xxx for copyright and licensing details.
6 
 */
7 
 
8 
#include "ql4_def.h"
9 
#include "ql4_glbl.h"
10 
#include "ql4_dbg.h"
11 
#include "ql4_inline.h"
12 
 
13 
static struct ddb_entry * qla4xxx_alloc_ddb(struct scsi_qla_host *ha,
14 
                                            uint32_t fw_ddb_index);
15 
 
16 
static void ql4xxx_set_mac_number(struct scsi_qla_host *ha)
17 
{
18 
        uint32_t value;
19 
        uint8_t func_number;
20 
        unsigned long flags;
21 
 
22 
        /* Get the function number */
23 
        spin_lock_irqsave(&ha->hardware_lock, flags);
24 
        value = readw(&ha->reg->ctrl_status);
25 
        spin_unlock_irqrestore(&ha->hardware_lock, flags);
26 
 
27 
        func_number = (uint8_t) ((value >> 4) & 0x30);
28 
        switch (value & ISP_CONTROL_FN_MASK) {
29 
        case ISP_CONTROL_FN0_SCSI:
30 
                ha->mac_index = 1;
31 
                break;
32 
        case ISP_CONTROL_FN1_SCSI:
33 
                ha->mac_index = 3;
34 
                break;
35 
        default:
36 
                DEBUG2(printk("scsi%ld: %s: Invalid function number, "
37 
                              "ispControlStatus = 0x%x\n", ha->host_no,
38 
                              __func__, value));
39 
                break;
40 
        }
41 
        DEBUG2(printk("scsi%ld: %s: mac_index %d.\n", ha->host_no, __func__,
42 
                      ha->mac_index));
43 
}
44 
 
45 
/**
46 
 * qla4xxx_free_ddb - deallocate ddb
47 
 * @ha: pointer to host adapter structure.
48 
 * @ddb_entry: pointer to device database entry
49 
 *
50 
 * This routine deallocates and unlinks the specified ddb_entry from the
51 
 * adapter's
52 
 **/
53 
static void qla4xxx_free_ddb(struct scsi_qla_host *ha,
54 
                             struct ddb_entry *ddb_entry)
55 
{
56 
        /* Remove device entry from list */
57 
        list_del_init(&ddb_entry->list);
58 
 
59 
        /* Remove device pointer from index mapping arrays */
60 
        ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] =
61 
                (struct ddb_entry *) INVALID_ENTRY;
62 
        ha->tot_ddbs--;
63 
 
64 
        /* Free memory and scsi-ml struct for device entry */
65 
        qla4xxx_destroy_sess(ddb_entry);
66 
}
67 
 
68 
/**
69 
 * qla4xxx_free_ddb_list - deallocate all ddbs
70 
 * @ha: pointer to host adapter structure.
71 
 *
72 
 * This routine deallocates and removes all devices on the sppecified adapter.
73 
 **/
74 
void qla4xxx_free_ddb_list(struct scsi_qla_host *ha)
75 
{
76 
        struct list_head *ptr;
77 
        struct ddb_entry *ddb_entry;
78 
 
79 
        while (!list_empty(&ha->ddb_list)) {
80 
                ptr = ha->ddb_list.next;
81 
                /* Free memory for device entry and remove */
82 
                ddb_entry = list_entry(ptr, struct ddb_entry, list);
83 
                qla4xxx_free_ddb(ha, ddb_entry);
84 
        }
85 
}
86 
 
87 
/**
88 
 * qla4xxx_init_rings - initialize hw queues
89 
 * @ha: pointer to host adapter structure.
90 
 *
91 
 * This routine initializes the internal queues for the specified adapter.
92 
 * The QLA4010 requires us to restart the queues at index 0.
93 
 * The QLA4000 doesn't care, so just default to QLA4010's requirement.
94 
 **/
95 
int qla4xxx_init_rings(struct scsi_qla_host *ha)
96 
{
97 
        unsigned long flags = 0;
98 
 
99 
        /* Initialize request queue. */
100 
        spin_lock_irqsave(&ha->hardware_lock, flags);
101 
        ha->request_out = 0;
102 
        ha->request_in = 0;
103 
        ha->request_ptr = &ha->request_ring[ha->request_in];
104 
        ha->req_q_count = REQUEST_QUEUE_DEPTH;
105 
 
106 
        /* Initialize response queue. */
107 
        ha->response_in = 0;
108 
        ha->response_out = 0;
109 
        ha->response_ptr = &ha->response_ring[ha->response_out];
110 
 
111 
        /*
112 
         * Initialize DMA Shadow registers.  The firmware is really supposed to
113 
         * take care of this, but on some uniprocessor systems, the shadow
114 
         * registers aren't cleared-- causing the interrupt_handler to think
115 
         * there are responses to be processed when there aren't.
116 
         */
117 
        ha->shadow_regs->req_q_out = __constant_cpu_to_le32(0);
118 
        ha->shadow_regs->rsp_q_in = __constant_cpu_to_le32(0);
119 
        wmb();
120 
 
121 
        writel(0, &ha->reg->req_q_in);
122 
        writel(0, &ha->reg->rsp_q_out);
123 
        readl(&ha->reg->rsp_q_out);
124 
 
125 
        spin_unlock_irqrestore(&ha->hardware_lock, flags);
126 
 
127 
        return QLA_SUCCESS;
128 
}
129 
 
130 
/**
131 
 * qla4xxx_validate_mac_address - validate adapter MAC address(es)
132 
 * @ha: pointer to host adapter structure.
133 
 *
134 
 **/
135 
static int qla4xxx_validate_mac_address(struct scsi_qla_host *ha)
136 
{
137 
        struct flash_sys_info *sys_info;
138 
        dma_addr_t sys_info_dma;
139 
        int status = QLA_ERROR;
140 
 
141 
        sys_info = dma_alloc_coherent(&ha->pdev->dev, sizeof(*sys_info),
142 
                                      &sys_info_dma, GFP_KERNEL);
143 
        if (sys_info == NULL) {
144 
                DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
145 
                              ha->host_no, __func__));
146 
 
147 
                goto exit_validate_mac_no_free;
148 
        }
149 
        memset(sys_info, 0, sizeof(*sys_info));
150 
 
151 
        /* Get flash sys info */
152 
        if (qla4xxx_get_flash(ha, sys_info_dma, FLASH_OFFSET_SYS_INFO,
153 
                              sizeof(*sys_info)) != QLA_SUCCESS) {
154 
                DEBUG2(printk("scsi%ld: %s: get_flash FLASH_OFFSET_SYS_INFO "
155 
                              "failed\n", ha->host_no, __func__));
156 
 
157 
                goto exit_validate_mac;
158 
        }
159 
 
160 
        /* Save M.A.C. address & serial_number */
161 
        memcpy(ha->my_mac, &sys_info->physAddr[0].address[0],
162 
               min(sizeof(ha->my_mac),
163 
                   sizeof(sys_info->physAddr[0].address)));
164 
        memcpy(ha->serial_number, &sys_info->acSerialNumber,
165 
               min(sizeof(ha->serial_number),
166 
                   sizeof(sys_info->acSerialNumber)));
167 
 
168 
        status = QLA_SUCCESS;
169 
 
170 
 exit_validate_mac:
171 
        dma_free_coherent(&ha->pdev->dev, sizeof(*sys_info), sys_info,
172 
                          sys_info_dma);
173 
 
174 
 exit_validate_mac_no_free:
175 
        return status;
176 
}
177 
 
178 
/**
179 
 * qla4xxx_init_local_data - initialize adapter specific local data
180 
 * @ha: pointer to host adapter structure.
181 
 *
182 
 **/
183 
static int qla4xxx_init_local_data(struct scsi_qla_host *ha)
184 
{
185 
        /* Initilize aen queue */
186 
        ha->aen_q_count = MAX_AEN_ENTRIES;
187 
 
188 
        return qla4xxx_get_firmware_status(ha);
189 
}
190 
 
191 
static int qla4xxx_fw_ready(struct scsi_qla_host *ha)
192 
{
193 
        uint32_t timeout_count;
194 
        int ready = 0;
195 
 
196 
        DEBUG2(dev_info(&ha->pdev->dev, "Waiting for Firmware Ready..\n"));
197 
        for (timeout_count = ADAPTER_INIT_TOV; timeout_count > 0;
198 
             timeout_count--) {
199 
                if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
200 
                        qla4xxx_get_dhcp_ip_address(ha);
201 
 
202 
                /* Get firmware state. */
203 
                if (qla4xxx_get_firmware_state(ha) != QLA_SUCCESS) {
204 
                        DEBUG2(printk("scsi%ld: %s: unable to get firmware "
205 
                                      "state\n", ha->host_no, __func__));
206 
                        break;
207 
 
208 
                }
209 
 
210 
                if (ha->firmware_state & FW_STATE_ERROR) {
211 
                        DEBUG2(printk("scsi%ld: %s: an unrecoverable error has"
212 
                                      " occurred\n", ha->host_no, __func__));
213 
                        break;
214 
 
215 
                }
216 
                if (ha->firmware_state & FW_STATE_CONFIG_WAIT) {
217 
                        /*
218 
                         * The firmware has not yet been issued an Initialize
219 
                         * Firmware command, so issue it now.
220 
                         */
221 
                        if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR)
222 
                                break;
223 
 
224 
                        /* Go back and test for ready state - no wait. */
225 
                        continue;
226 
                }
227 
 
228 
                if (ha->firmware_state == FW_STATE_READY) {
229 
                        DEBUG2(dev_info(&ha->pdev->dev, "Firmware Ready..\n"));
230 
                        /* The firmware is ready to process SCSI commands. */
231 
                        DEBUG2(dev_info(&ha->pdev->dev,
232 
                                          "scsi%ld: %s: MEDIA TYPE - %s\n",
233 
                                          ha->host_no,
234 
                                          __func__, (ha->addl_fw_state &
235 
                                                     FW_ADDSTATE_OPTICAL_MEDIA)
236 
                                          != 0 ? "OPTICAL" : "COPPER"));
237 
                        DEBUG2(dev_info(&ha->pdev->dev,
238 
                                          "scsi%ld: %s: DHCP STATE Enabled "
239 
                                          "%s\n",
240 
                                          ha->host_no, __func__,
241 
                                          (ha->addl_fw_state &
242 
                                           FW_ADDSTATE_DHCP_ENABLED) != 0 ?
243 
                                          "YES" : "NO"));
244 
                        DEBUG2(dev_info(&ha->pdev->dev,
245 
                                          "scsi%ld: %s: LINK %s\n",
246 
                                          ha->host_no, __func__,
247 
                                          (ha->addl_fw_state &
248 
                                           FW_ADDSTATE_LINK_UP) != 0 ?
249 
                                          "UP" : "DOWN"));
250 
                        DEBUG2(dev_info(&ha->pdev->dev,
251 
                                          "scsi%ld: %s: iSNS Service "
252 
                                          "Started %s\n",
253 
                                          ha->host_no, __func__,
254 
                                          (ha->addl_fw_state &
255 
                                           FW_ADDSTATE_ISNS_SVC_ENABLED) != 0 ?
256 
                                          "YES" : "NO"));
257 
 
258 
                        ready = 1;
259 
                        break;
260 
                }
261 
                DEBUG2(printk("scsi%ld: %s: waiting on fw, state=%x:%x - "
262 
                              "seconds expired= %d\n", ha->host_no, __func__,
263 
                              ha->firmware_state, ha->addl_fw_state,
264 
                              timeout_count));
265 
                if (is_qla4032(ha) &&
266 
                        !(ha->addl_fw_state & FW_ADDSTATE_LINK_UP) &&
267 
                        (timeout_count < ADAPTER_INIT_TOV - 5)) {
268 
                        break;
269 
                }
270 
 
271 
                msleep(1000);
272 
        }                       /* end of for */
273 
 
274 
        if (timeout_count == 0)
275 
                DEBUG2(printk("scsi%ld: %s: FW Initialization timed out!\n",
276 
                              ha->host_no, __func__));
277 
 
278 
        if (ha->firmware_state & FW_STATE_DHCP_IN_PROGRESS)  {
279 
                DEBUG2(printk("scsi%ld: %s: FW is reporting its waiting to"
280 
                              " grab an IP address from DHCP server\n",
281 
                              ha->host_no, __func__));
282 
                ready = 1;
283 
        }
284 
 
285 
        return ready;
286 
}
287 
 
288 
/**
289 
 * qla4xxx_init_firmware - initializes the firmware.
290 
 * @ha: pointer to host adapter structure.
291 
 *
292 
 **/
293 
static int qla4xxx_init_firmware(struct scsi_qla_host *ha)
294 
{
295 
        int status = QLA_ERROR;
296 
 
297 
        dev_info(&ha->pdev->dev, "Initializing firmware..\n");
298 
        if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR) {
299 
                DEBUG2(printk("scsi%ld: %s: Failed to initialize firmware "
300 
                              "control block\n", ha->host_no, __func__));
301 
                return status;
302 
        }
303 
        if (!qla4xxx_fw_ready(ha))
304 
                return status;
305 
 
306 
        return qla4xxx_get_firmware_status(ha);
307 
}
308 
 
309 
static struct ddb_entry* qla4xxx_get_ddb_entry(struct scsi_qla_host *ha,
310 
                                                uint32_t fw_ddb_index,
311 
                                                uint32_t *new_tgt)
312 
{
313 
        struct dev_db_entry *fw_ddb_entry = NULL;
314 
        dma_addr_t fw_ddb_entry_dma;
315 
        struct ddb_entry *ddb_entry = NULL;
316 
        int found = 0;
317 
        uint32_t device_state;
318 
 
319 
        *new_tgt = 0;
320 
        /* Make sure the dma buffer is valid */
321 
        fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
322 
                                          sizeof(*fw_ddb_entry),
323 
                                          &fw_ddb_entry_dma, GFP_KERNEL);
324 
        if (fw_ddb_entry == NULL) {
325 
                DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
326 
                              ha->host_no, __func__));
327 
                return NULL;
328 
        }
329 
 
330 
        if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry,
331 
                                    fw_ddb_entry_dma, NULL, NULL,
332 
                                    &device_state, NULL, NULL, NULL) ==
333 
            QLA_ERROR) {
334 
                DEBUG2(printk("scsi%ld: %s: failed get_ddb_entry for "
335 
                              "fw_ddb_index %d\n", ha->host_no, __func__,
336 
                              fw_ddb_index));
337 
                return NULL;
338 
        }
339 
 
340 
        /* Allocate DDB if not already allocated. */
341 
        DEBUG2(printk("scsi%ld: %s: Looking for ddb[%d]\n", ha->host_no,
342 
                      __func__, fw_ddb_index));
343 
        list_for_each_entry(ddb_entry, &ha->ddb_list, list) {
344 
                if (memcmp(ddb_entry->iscsi_name, fw_ddb_entry->iscsi_name,
345 
                           ISCSI_NAME_SIZE) == 0) {
346 
                        found++;
347 
                        break;
348 
                }
349 
        }
350 
 
351 
        if (!found) {
352 
                DEBUG2(printk("scsi%ld: %s: ddb[%d] not found - allocating "
353 
                              "new ddb\n", ha->host_no, __func__,
354 
                              fw_ddb_index));
355 
                *new_tgt = 1;
356 
                ddb_entry = qla4xxx_alloc_ddb(ha, fw_ddb_index);
357 
        }
358 
 
359 
        /* if not found allocate new ddb */
360 
        dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
361 
                          fw_ddb_entry_dma);
362 
 
363 
        return ddb_entry;
364 
}
365 
 
366 
/**
367 
 * qla4xxx_update_ddb_entry - update driver's internal ddb
368 
 * @ha: pointer to host adapter structure.
369 
 * @ddb_entry: pointer to device database structure to be filled
370 
 * @fw_ddb_index: index of the ddb entry in fw ddb table
371 
 *
372 
 * This routine updates the driver's internal device database entry
373 
 * with information retrieved from the firmware's device database
374 
 * entry for the specified device. The ddb_entry->fw_ddb_index field
375 
 * must be initialized prior to calling this routine
376 
 *
377 
 **/
378 
static int qla4xxx_update_ddb_entry(struct scsi_qla_host *ha,
379 
                                    struct ddb_entry *ddb_entry,
380 
                                    uint32_t fw_ddb_index)
381 
{
382 
        struct dev_db_entry *fw_ddb_entry = NULL;
383 
        dma_addr_t fw_ddb_entry_dma;
384 
        int status = QLA_ERROR;
385 
 
386 
        if (ddb_entry == NULL) {
387 
                DEBUG2(printk("scsi%ld: %s: ddb_entry is NULL\n", ha->host_no,
388 
                              __func__));
389 
                goto exit_update_ddb;
390 
        }
391 
 
392 
        /* Make sure the dma buffer is valid */
393 
        fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
394 
                                          sizeof(*fw_ddb_entry),
395 
                                          &fw_ddb_entry_dma, GFP_KERNEL);
396 
        if (fw_ddb_entry == NULL) {
397 
                DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
398 
                              ha->host_no, __func__));
399 
 
400 
                goto exit_update_ddb;
401 
        }
402 
 
403 
        if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry,
404 
                                    fw_ddb_entry_dma, NULL, NULL,
405 
                                    &ddb_entry->fw_ddb_device_state, NULL,
406 
                                    &ddb_entry->tcp_source_port_num,
407 
                                    &ddb_entry->connection_id) ==
408 
            QLA_ERROR) {
409 
                DEBUG2(printk("scsi%ld: %s: failed get_ddb_entry for "
410 
                              "fw_ddb_index %d\n", ha->host_no, __func__,
411 
                              fw_ddb_index));
412 
 
413 
                goto exit_update_ddb;
414 
        }
415 
 
416 
        status = QLA_SUCCESS;
417 
        ddb_entry->target_session_id = le16_to_cpu(fw_ddb_entry->tsid);
418 
        ddb_entry->task_mgmt_timeout =
419 
                le16_to_cpu(fw_ddb_entry->def_timeout);
420 
        ddb_entry->CmdSn = 0;
421 
        ddb_entry->exe_throttle = le16_to_cpu(fw_ddb_entry->exec_throttle);
422 
        ddb_entry->default_relogin_timeout =
423 
                le16_to_cpu(fw_ddb_entry->def_timeout);
424 
        ddb_entry->default_time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
425 
 
426 
        /* Update index in case it changed */
427 
        ddb_entry->fw_ddb_index = fw_ddb_index;
428 
        ha->fw_ddb_index_map[fw_ddb_index] = ddb_entry;
429 
 
430 
        ddb_entry->port = le16_to_cpu(fw_ddb_entry->port);
431 
        ddb_entry->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
432 
        memcpy(&ddb_entry->iscsi_name[0], &fw_ddb_entry->iscsi_name[0],
433 
               min(sizeof(ddb_entry->iscsi_name),
434 
                   sizeof(fw_ddb_entry->iscsi_name)));
435 
        memcpy(&ddb_entry->ip_addr[0], &fw_ddb_entry->ip_addr[0],
436 
               min(sizeof(ddb_entry->ip_addr), sizeof(fw_ddb_entry->ip_addr)));
437 
 
438 
        DEBUG2(printk("scsi%ld: %s: ddb[%d] - State= %x status= %d.\n",
439 
                      ha->host_no, __func__, fw_ddb_index,
440 
                      ddb_entry->fw_ddb_device_state, status));
441 
 
442 
 exit_update_ddb:
443 
        if (fw_ddb_entry)
444 
                dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
445 
                                  fw_ddb_entry, fw_ddb_entry_dma);
446 
 
447 
        return status;
448 
}
449 
 
450 
/**
451 
 * qla4xxx_alloc_ddb - allocate device database entry
452 
 * @ha: Pointer to host adapter structure.
453 
 * @fw_ddb_index: Firmware's device database index
454 
 *
455 
 * This routine allocates a ddb_entry, ititializes some values, and
456 
 * inserts it into the ddb list.
457 
 **/
458 
static struct ddb_entry * qla4xxx_alloc_ddb(struct scsi_qla_host *ha,
459 
                                            uint32_t fw_ddb_index)
460 
{
461 
        struct ddb_entry *ddb_entry;
462 
 
463 
        DEBUG2(printk("scsi%ld: %s: fw_ddb_index [%d]\n", ha->host_no,
464 
                      __func__, fw_ddb_index));
465 
 
466 
        ddb_entry = qla4xxx_alloc_sess(ha);
467 
        if (ddb_entry == NULL) {
468 
                DEBUG2(printk("scsi%ld: %s: Unable to allocate memory "
469 
                              "to add fw_ddb_index [%d]\n",
470 
                              ha->host_no, __func__, fw_ddb_index));
471 
                return ddb_entry;
472 
        }
473 
 
474 
        ddb_entry->fw_ddb_index = fw_ddb_index;
475 
        atomic_set(&ddb_entry->port_down_timer, ha->port_down_retry_count);
476 
        atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
477 
        atomic_set(&ddb_entry->relogin_timer, 0);
478 
        atomic_set(&ddb_entry->relogin_retry_count, 0);
479 
        atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
480 
        list_add_tail(&ddb_entry->list, &ha->ddb_list);
481 
        ha->fw_ddb_index_map[fw_ddb_index] = ddb_entry;
482 
        ha->tot_ddbs++;
483 
 
484 
        return ddb_entry;
485 
}
486 
 
487 
/**
488 
 * qla4xxx_configure_ddbs - builds driver ddb list
489 
 * @ha: Pointer to host adapter structure.
490 
 *
491 
 * This routine searches for all valid firmware ddb entries and builds
492 
 * an internal ddb list. Ddbs that are considered valid are those with
493 
 * a device state of SESSION_ACTIVE.
494 
 **/
495 
static int qla4xxx_build_ddb_list(struct scsi_qla_host *ha)
496 
{
497 
        int status = QLA_SUCCESS;
498 
        uint32_t fw_ddb_index = 0;
499 
        uint32_t next_fw_ddb_index = 0;
500 
        uint32_t ddb_state;
501 
        uint32_t conn_err, err_code;
502 
        struct ddb_entry *ddb_entry;
503 
        uint32_t new_tgt;
504 
 
505 
        dev_info(&ha->pdev->dev, "Initializing DDBs ...\n");
506 
        for (fw_ddb_index = 0; fw_ddb_index < MAX_DDB_ENTRIES;
507 
             fw_ddb_index = next_fw_ddb_index) {
508 
                /* First, let's see if a device exists here */
509 
                if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, NULL, 0, NULL,
510 
                                            &next_fw_ddb_index, &ddb_state,
511 
                                            &conn_err, NULL, NULL) ==
512 
                    QLA_ERROR) {
513 
                        DEBUG2(printk("scsi%ld: %s: get_ddb_entry, "
514 
                                      "fw_ddb_index %d failed", ha->host_no,
515 
                                      __func__, fw_ddb_index));
516 
                        return QLA_ERROR;
517 
                }
518 
 
519 
                DEBUG2(printk("scsi%ld: %s: Getting DDB[%d] ddbstate=0x%x, "
520 
                              "next_fw_ddb_index=%d.\n", ha->host_no, __func__,
521 
                              fw_ddb_index, ddb_state, next_fw_ddb_index));
522 
 
523 
                /* Issue relogin, if necessary. */
524 
                if (ddb_state == DDB_DS_SESSION_FAILED ||
525 
                    ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) {
526 
                        /* Try and login to device */
527 
                        DEBUG2(printk("scsi%ld: %s: Login to DDB[%d]\n",
528 
                                      ha->host_no, __func__, fw_ddb_index));
529 
                        err_code = ((conn_err & 0x00ff0000) >> 16);
530 
                        if (err_code == 0x1c || err_code == 0x06) {
531 
                                DEBUG2(printk("scsi%ld: %s send target "
532 
                                              "completed "
533 
                                              "or access denied failure\n",
534 
                                              ha->host_no, __func__));
535 
                        } else {
536 
                                qla4xxx_set_ddb_entry(ha, fw_ddb_index, 0);
537 
                                if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index,
538 
                                        NULL, 0, NULL, &next_fw_ddb_index,
539 
                                        &ddb_state, &conn_err, NULL, NULL)
540 
                                        == QLA_ERROR) {
541 
                                        DEBUG2(printk("scsi%ld: %s:"
542 
                                                "get_ddb_entry %d failed\n",
543 
                                                ha->host_no,
544 
                                                __func__, fw_ddb_index));
545 
                                        return QLA_ERROR;
546 
                                }
547 
                        }
548 
                }
549 
 
550 
                if (ddb_state != DDB_DS_SESSION_ACTIVE)
551 
                        goto next_one;
552 
                /*
553 
                 * if fw_ddb with session active state found,
554 
                 * add to ddb_list
555 
                 */
556 
                DEBUG2(printk("scsi%ld: %s: DDB[%d] added to list\n",
557 
                              ha->host_no, __func__, fw_ddb_index));
558 
 
559 
                /* Add DDB to internal our ddb list. */
560 
                ddb_entry = qla4xxx_get_ddb_entry(ha, fw_ddb_index, &new_tgt);
561 
                if (ddb_entry == NULL) {
562 
                        DEBUG2(printk("scsi%ld: %s: Unable to allocate memory "
563 
                                      "for device at fw_ddb_index %d\n",
564 
                                      ha->host_no, __func__, fw_ddb_index));
565 
                        return QLA_ERROR;
566 
                }
567 
                /* Fill in the device structure */
568 
                if (qla4xxx_update_ddb_entry(ha, ddb_entry, fw_ddb_index) ==
569 
                    QLA_ERROR) {
570 
                        ha->fw_ddb_index_map[fw_ddb_index] =
571 
                                (struct ddb_entry *)INVALID_ENTRY;
572 
 
573 
 
574 
                        DEBUG2(printk("scsi%ld: %s: update_ddb_entry failed "
575 
                                      "for fw_ddb_index %d.\n",
576 
                                      ha->host_no, __func__, fw_ddb_index));
577 
                        return QLA_ERROR;
578 
                }
579 
 
580 
next_one:
581 
                /* We know we've reached the last device when
582 
                 * next_fw_ddb_index is 0 */
583 
                if (next_fw_ddb_index == 0)
584 
                        break;
585 
        }
586 
 
587 
        dev_info(&ha->pdev->dev, "DDB list done..\n");
588 
 
589 
        return status;
590 
}
591 
 
592 
struct qla4_relog_scan {
593 
        int halt_wait;
594 
        uint32_t conn_err;
595 
        uint32_t err_code;
596 
        uint32_t fw_ddb_index;
597 
        uint32_t next_fw_ddb_index;
598 
        uint32_t fw_ddb_device_state;
599 
};
600 
 
601 
static int qla4_test_rdy(struct scsi_qla_host *ha, struct qla4_relog_scan *rs)
602 
{
603 
        struct ddb_entry *ddb_entry;
604 
 
605 
        /*
606 
         * Don't want to do a relogin if connection
607 
         * error is 0x1c.
608 
         */
609 
        rs->err_code = ((rs->conn_err & 0x00ff0000) >> 16);
610 
        if (rs->err_code == 0x1c || rs->err_code == 0x06) {
611 
                DEBUG2(printk(
612 
                               "scsi%ld: %s send target"
613 
                               " completed or "
614 
                               "access denied failure\n",
615 
                               ha->host_no, __func__));
616 
        } else {
617 
                /* We either have a device that is in
618 
                 * the process of relogging in or a
619 
                 * device that is waiting to be
620 
                 * relogged in */
621 
                rs->halt_wait = 0;
622 
 
623 
                ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha,
624 
                                                           rs->fw_ddb_index);
625 
                if (ddb_entry == NULL)
626 
                        return QLA_ERROR;
627 
 
628 
                if (ddb_entry->dev_scan_wait_to_start_relogin != 0
629 
                    && time_after_eq(jiffies,
630 
                                     ddb_entry->
631 
                                     dev_scan_wait_to_start_relogin))
632 
                {
633 
                        ddb_entry->dev_scan_wait_to_start_relogin = 0;
634 
                        qla4xxx_set_ddb_entry(ha, rs->fw_ddb_index, 0);
635 
                }
636 
        }
637 
        return QLA_SUCCESS;
638 
}
639 
 
640 
static int qla4_scan_for_relogin(struct scsi_qla_host *ha,
641 
                                 struct qla4_relog_scan *rs)
642 
{
643 
        int error;
644 
 
645 
        /* scan for relogins
646 
         * ----------------- */
647 
        for (rs->fw_ddb_index = 0; rs->fw_ddb_index < MAX_DDB_ENTRIES;
648 
             rs->fw_ddb_index = rs->next_fw_ddb_index) {
649 
                if (qla4xxx_get_fwddb_entry(ha, rs->fw_ddb_index, NULL, 0,
650 
                                            NULL, &rs->next_fw_ddb_index,
651 
                                            &rs->fw_ddb_device_state,
652 
                                            &rs->conn_err, NULL, NULL)
653 
                    == QLA_ERROR)
654 
                        return QLA_ERROR;
655 
 
656 
                if (rs->fw_ddb_device_state == DDB_DS_LOGIN_IN_PROCESS)
657 
                        rs->halt_wait = 0;
658 
 
659 
                if (rs->fw_ddb_device_state == DDB_DS_SESSION_FAILED ||
660 
                    rs->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE) {
661 
                        error = qla4_test_rdy(ha, rs);
662 
                        if (error)
663 
                                return error;
664 
                }
665 
 
666 
                /* We know we've reached the last device when
667 
                 * next_fw_ddb_index is 0 */
668 
                if (rs->next_fw_ddb_index == 0)
669 
                        break;
670 
        }
671 
        return QLA_SUCCESS;
672 
}
673 
 
674 
/**
675 
 * qla4xxx_devices_ready - wait for target devices to be logged in
676 
 * @ha: pointer to adapter structure
677 
 *
678 
 * This routine waits up to ql4xdiscoverywait seconds
679 
 * F/W database during driver load time.
680 
 **/
681 
static int qla4xxx_devices_ready(struct scsi_qla_host *ha)
682 
{
683 
        int error;
684 
        unsigned long discovery_wtime;
685 
        struct qla4_relog_scan rs;
686 
 
687 
        discovery_wtime = jiffies + (ql4xdiscoverywait * HZ);
688 
 
689 
        DEBUG(printk("Waiting (%d) for devices ...\n", ql4xdiscoverywait));
690 
        do {
691 
                /* poll for AEN. */
692 
                qla4xxx_get_firmware_state(ha);
693 
                if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags)) {
694 
                        /* Set time-between-relogin timer */
695 
                        qla4xxx_process_aen(ha, RELOGIN_DDB_CHANGED_AENS);
696 
                }
697 
 
698 
                /* if no relogins active or needed, halt discvery wait */
699 
                rs.halt_wait = 1;
700 
 
701 
                error = qla4_scan_for_relogin(ha, &rs);
702 
 
703 
                if (rs.halt_wait) {
704 
                        DEBUG2(printk("scsi%ld: %s: Delay halted.  Devices "
705 
                                      "Ready.\n", ha->host_no, __func__));
706 
                        return QLA_SUCCESS;
707 
                }
708 
 
709 
                msleep(2000);
710 
        } while (!time_after_eq(jiffies, discovery_wtime));
711 
 
712 
        DEBUG3(qla4xxx_get_conn_event_log(ha));
713 
 
714 
        return QLA_SUCCESS;
715 
}
716 
 
717 
static void qla4xxx_flush_AENS(struct scsi_qla_host *ha)
718 
{
719 
        unsigned long wtime;
720 
 
721 
        /* Flush the 0x8014 AEN from the firmware as a result of
722 
         * Auto connect. We are basically doing get_firmware_ddb()
723 
         * to determine whether we need to log back in or not.
724 
         *  Trying to do a set ddb before we have processed 0x8014
725 
         *  will result in another set_ddb() for the same ddb. In other
726 
         *  words there will be stale entries in the aen_q.
727 
         */
728 
        wtime = jiffies + (2 * HZ);
729 
        do {
730 
                if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS)
731 
                        if (ha->firmware_state & (BIT_2 | BIT_0))
732 
                                return;
733 
 
734 
                if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
735 
                        qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
736 
 
737 
                msleep(1000);
738 
        } while (!time_after_eq(jiffies, wtime));
739 
 
740 
}
741 
 
742 
static int qla4xxx_initialize_ddb_list(struct scsi_qla_host *ha)
743 
{
744 
        uint16_t fw_ddb_index;
745 
        int status = QLA_SUCCESS;
746 
 
747 
        /* free the ddb list if is not empty */
748 
        if (!list_empty(&ha->ddb_list))
749 
                qla4xxx_free_ddb_list(ha);
750 
 
751 
        for (fw_ddb_index = 0; fw_ddb_index < MAX_DDB_ENTRIES; fw_ddb_index++)
752 
                ha->fw_ddb_index_map[fw_ddb_index] =
753 
                        (struct ddb_entry *)INVALID_ENTRY;
754 
 
755 
        ha->tot_ddbs = 0;
756 
 
757 
        qla4xxx_flush_AENS(ha);
758 
 
759 
        /*
760 
         * First perform device discovery for active
761 
         * fw ddb indexes and build
762 
         * ddb list.
763 
         */
764 
        if ((status = qla4xxx_build_ddb_list(ha)) == QLA_ERROR)
765 
                return status;
766 
 
767 
        /* Wait for an AEN */
768 
        qla4xxx_devices_ready(ha);
769 
 
770 
        /*
771 
         * Targets can come online after the inital discovery, so processing
772 
         * the aens here will catch them.
773 
         */
774 
        if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
775 
                qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
776 
 
777 
        return status;
778 
}
779 
 
780 
/**
781 
 * qla4xxx_update_ddb_list - update the driver ddb list
782 
 * @ha: pointer to host adapter structure.
783 
 *
784 
 * This routine obtains device information from the F/W database after
785 
 * firmware or adapter resets.  The device table is preserved.
786 
 **/
787 
int qla4xxx_reinitialize_ddb_list(struct scsi_qla_host *ha)
788 
{
789 
        int status = QLA_SUCCESS;
790 
        struct ddb_entry *ddb_entry, *detemp;
791 
 
792 
        /* Update the device information for all devices. */
793 
        list_for_each_entry_safe(ddb_entry, detemp, &ha->ddb_list, list) {
794 
                qla4xxx_update_ddb_entry(ha, ddb_entry,
795 
                                         ddb_entry->fw_ddb_index);
796 
                if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
797 
                        atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
798 
                        DEBUG2(printk ("scsi%ld: %s: ddb index [%d] marked "
799 
                                       "ONLINE\n", ha->host_no, __func__,
800 
                                       ddb_entry->fw_ddb_index));
801 
                } else if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE)
802 
                        qla4xxx_mark_device_missing(ha, ddb_entry);
803 
        }
804 
        return status;
805 
}
806 
 
807 
/**
808 
 * qla4xxx_relogin_device - re-establish session
809 
 * @ha: Pointer to host adapter structure.
810 
 * @ddb_entry: Pointer to device database entry
811 
 *
812 
 * This routine does a session relogin with the specified device.
813 
 * The ddb entry must be assigned prior to making this call.
814 
 **/
815 
int qla4xxx_relogin_device(struct scsi_qla_host *ha,
816 
                           struct ddb_entry * ddb_entry)
817 
{
818 
        uint16_t relogin_timer;
819 
 
820 
        relogin_timer = max(ddb_entry->default_relogin_timeout,
821 
                            (uint16_t)RELOGIN_TOV);
822 
        atomic_set(&ddb_entry->relogin_timer, relogin_timer);
823 
 
824 
        DEBUG2(printk("scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
825 
                      ddb_entry->fw_ddb_index, relogin_timer));
826 
 
827 
        qla4xxx_set_ddb_entry(ha, ddb_entry->fw_ddb_index, 0);
828 
 
829 
        return QLA_SUCCESS;
830 
}
831 
 
832 
static int qla4xxx_config_nvram(struct scsi_qla_host *ha)
833 
{
834 
        unsigned long flags;
835 
        union external_hw_config_reg extHwConfig;
836 
 
837 
        DEBUG2(printk("scsi%ld: %s: Get EEProm parameters \n", ha->host_no,
838 
                      __func__));
839 
        if (ql4xxx_lock_flash(ha) != QLA_SUCCESS)
840 
                return (QLA_ERROR);
841 
        if (ql4xxx_lock_nvram(ha) != QLA_SUCCESS) {
842 
                ql4xxx_unlock_flash(ha);
843 
                return (QLA_ERROR);
844 
        }
845 
 
846 
        /* Get EEPRom Parameters from NVRAM and validate */
847 
        dev_info(&ha->pdev->dev, "Configuring NVRAM ...\n");
848 
        if (qla4xxx_is_nvram_configuration_valid(ha) == QLA_SUCCESS) {
849 
                spin_lock_irqsave(&ha->hardware_lock, flags);
850 
                extHwConfig.Asuint32_t =
851 
                        rd_nvram_word(ha, eeprom_ext_hw_conf_offset(ha));
852 
                spin_unlock_irqrestore(&ha->hardware_lock, flags);
853 
        } else {
854 
                /*
855 
                 * QLogic adapters should always have a valid NVRAM.
856 
                 * If not valid, do not load.
857 
                 */
858 
                dev_warn(&ha->pdev->dev,
859 
                           "scsi%ld: %s: EEProm checksum invalid.  "
860 
                           "Please update your EEPROM\n", ha->host_no,
861 
                           __func__);
862 
 
863 
                /* set defaults */
864 
                if (is_qla4010(ha))
865 
                        extHwConfig.Asuint32_t = 0x1912;
866 
                else if (is_qla4022(ha) | is_qla4032(ha))
867 
                        extHwConfig.Asuint32_t = 0x0023;
868 
        }
869 
        DEBUG(printk("scsi%ld: %s: Setting extHwConfig to 0xFFFF%04x\n",
870 
                     ha->host_no, __func__, extHwConfig.Asuint32_t));
871 
 
872 
        spin_lock_irqsave(&ha->hardware_lock, flags);
873 
        writel((0xFFFF << 16) | extHwConfig.Asuint32_t, isp_ext_hw_conf(ha));
874 
        readl(isp_ext_hw_conf(ha));
875 
        spin_unlock_irqrestore(&ha->hardware_lock, flags);
876 
 
877 
        ql4xxx_unlock_nvram(ha);
878 
        ql4xxx_unlock_flash(ha);
879 
 
880 
        return (QLA_SUCCESS);
881 
}
882 
 
883 
static void qla4x00_pci_config(struct scsi_qla_host *ha)
884 
{
885 
        uint16_t w;
886 
        int status;
887 
 
888 
        dev_info(&ha->pdev->dev, "Configuring PCI space...\n");
889 
 
890 
        pci_set_master(ha->pdev);
891 
        status = pci_set_mwi(ha->pdev);
892 
        /*
893 
         * We want to respect framework's setting of PCI configuration space
894 
         * command register and also want to make sure that all bits of
895 
         * interest to us are properly set in command register.
896 
         */
897 
        pci_read_config_word(ha->pdev, PCI_COMMAND, &w);
898 
        w |= PCI_COMMAND_PARITY | PCI_COMMAND_SERR;
899 
        w &= ~PCI_COMMAND_INTX_DISABLE;
900 
        pci_write_config_word(ha->pdev, PCI_COMMAND, w);
901 
}
902 
 
903 
static int qla4xxx_start_firmware_from_flash(struct scsi_qla_host *ha)
904 
{
905 
        int status = QLA_ERROR;
906 
        uint32_t max_wait_time;
907 
        unsigned long flags;
908 
        uint32_t mbox_status;
909 
 
910 
        dev_info(&ha->pdev->dev, "Starting firmware ...\n");
911 
 
912 
        /*
913 
         * Start firmware from flash ROM
914 
         *
915 
         * WORKAROUND: Stuff a non-constant value that the firmware can
916 
         * use as a seed for a random number generator in MB7 prior to
917 
         * setting BOOT_ENABLE.  Fixes problem where the TCP
918 
         * connections use the same TCP ports after each reboot,
919 
         * causing some connections to not get re-established.
920 
         */
921 
        DEBUG(printk("scsi%d: %s: Start firmware from flash ROM\n",
922 
                     ha->host_no, __func__));
923 
 
924 
        spin_lock_irqsave(&ha->hardware_lock, flags);
925 
        writel(jiffies, &ha->reg->mailbox[7]);
926 
        if (is_qla4022(ha) | is_qla4032(ha))
927 
                writel(set_rmask(NVR_WRITE_ENABLE),
928 
                       &ha->reg->u1.isp4022.nvram);
929 
 
930 
        writel(2, &ha->reg->mailbox[6]);
931 
        readl(&ha->reg->mailbox[6]);
932 
 
933 
        writel(set_rmask(CSR_BOOT_ENABLE), &ha->reg->ctrl_status);
934 
        readl(&ha->reg->ctrl_status);
935 
        spin_unlock_irqrestore(&ha->hardware_lock, flags);
936 
 
937 
        /* Wait for firmware to come UP. */
938 
        max_wait_time = FIRMWARE_UP_TOV * 4;
939 
        do {
940 
                uint32_t ctrl_status;
941 
 
942 
                spin_lock_irqsave(&ha->hardware_lock, flags);
943 
                ctrl_status = readw(&ha->reg->ctrl_status);
944 
                mbox_status = readw(&ha->reg->mailbox[0]);
945 
                spin_unlock_irqrestore(&ha->hardware_lock, flags);
946 
 
947 
                if (ctrl_status & set_rmask(CSR_SCSI_PROCESSOR_INTR))
948 
                        break;
949 
                if (mbox_status == MBOX_STS_COMMAND_COMPLETE)
950 
                        break;
951 
 
952 
                DEBUG2(printk("scsi%ld: %s: Waiting for boot firmware to "
953 
                              "complete... ctrl_sts=0x%x, remaining=%d\n",
954 
                              ha->host_no, __func__, ctrl_status,
955 
                              max_wait_time));
956 
 
957 
                msleep(250);
958 
        } while ((max_wait_time--));
959 
 
960 
        if (mbox_status == MBOX_STS_COMMAND_COMPLETE) {
961 
                DEBUG(printk("scsi%ld: %s: Firmware has started\n",
962 
                             ha->host_no, __func__));
963 
 
964 
                spin_lock_irqsave(&ha->hardware_lock, flags);
965 
                writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
966 
                       &ha->reg->ctrl_status);
967 
                readl(&ha->reg->ctrl_status);
968 
                spin_unlock_irqrestore(&ha->hardware_lock, flags);
969 
 
970 
                status = QLA_SUCCESS;
971 
        } else {
972 
                printk(KERN_INFO "scsi%ld: %s: Boot firmware failed "
973 
                       "-  mbox status 0x%x\n", ha->host_no, __func__,
974 
                       mbox_status);
975 
                status = QLA_ERROR;
976 
        }
977 
        return status;
978 
}
979 
 
980 
int ql4xxx_lock_drvr_wait(struct scsi_qla_host *a)
981 
{
982 
#define QL4_LOCK_DRVR_WAIT      60
983 
#define QL4_LOCK_DRVR_SLEEP     1
984 
 
985 
        int drvr_wait = QL4_LOCK_DRVR_WAIT;
986 
        while (drvr_wait) {
987 
                if (ql4xxx_lock_drvr(a) == 0) {
988 
                        ssleep(QL4_LOCK_DRVR_SLEEP);
989 
                        if (drvr_wait) {
990 
                                DEBUG2(printk("scsi%ld: %s: Waiting for "
991 
                                              "Global Init Semaphore(%d)...\n",
992 
                                              a->host_no,
993 
                                              __func__, drvr_wait));
994 
                        }
995 
                        drvr_wait -= QL4_LOCK_DRVR_SLEEP;
996 
                } else {
997 
                        DEBUG2(printk("scsi%ld: %s: Global Init Semaphore "
998 
                                      "acquired\n", a->host_no, __func__));
999 
                        return QLA_SUCCESS;
1000 
                }
1001 
        }
1002 
        return QLA_ERROR;
1003 
}
1004 
 
1005 
/**
1006 
 * qla4xxx_start_firmware - starts qla4xxx firmware
1007 
 * @ha: Pointer to host adapter structure.
1008 
 *
1009 
 * This routine performs the necessary steps to start the firmware for
1010 
 * the QLA4010 adapter.
1011 
 **/
1012 
static int qla4xxx_start_firmware(struct scsi_qla_host *ha)
1013 
{
1014 
        unsigned long flags = 0;
1015 
        uint32_t mbox_status;
1016 
        int status = QLA_ERROR;
1017 
        int soft_reset = 1;
1018 
        int config_chip = 0;
1019 
 
1020 
        if (is_qla4022(ha) | is_qla4032(ha))
1021 
                ql4xxx_set_mac_number(ha);
1022 
 
1023 
        if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
1024 
                return QLA_ERROR;
1025 
 
1026 
        spin_lock_irqsave(&ha->hardware_lock, flags);
1027 
 
1028 
        DEBUG2(printk("scsi%ld: %s: port_ctrl   = 0x%08X\n", ha->host_no,
1029 
                      __func__, readw(isp_port_ctrl(ha))));
1030 
        DEBUG(printk("scsi%ld: %s: port_status = 0x%08X\n", ha->host_no,
1031 
                     __func__, readw(isp_port_status(ha))));
1032 
 
1033 
        /* Is Hardware already initialized? */
1034 
        if ((readw(isp_port_ctrl(ha)) & 0x8000) != 0) {
1035 
                DEBUG(printk("scsi%ld: %s: Hardware has already been "
1036 
                             "initialized\n", ha->host_no, __func__));
1037 
 
1038 
                /* Receive firmware boot acknowledgement */
1039 
                mbox_status = readw(&ha->reg->mailbox[0]);
1040 
 
1041 
                DEBUG2(printk("scsi%ld: %s: H/W Config complete - mbox[0]= "
1042 
                              "0x%x\n", ha->host_no, __func__, mbox_status));
1043 
 
1044 
                /* Is firmware already booted? */
1045 
                if (mbox_status == 0) {
1046 
                        /* F/W not running, must be config by net driver */
1047 
                        config_chip = 1;
1048 
                        soft_reset = 0;
1049 
                } else {
1050 
                        writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
1051 
                               &ha->reg->ctrl_status);
1052 
                        readl(&ha->reg->ctrl_status);
1053 
                        spin_unlock_irqrestore(&ha->hardware_lock, flags);
1054 
                        if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS) {
1055 
                                DEBUG2(printk("scsi%ld: %s: Get firmware "
1056 
                                              "state -- state = 0x%x\n",
1057 
                                              ha->host_no,
1058 
                                              __func__, ha->firmware_state));
1059 
                                /* F/W is running */
1060 
                                if (ha->firmware_state &
1061 
                                    FW_STATE_CONFIG_WAIT) {
1062 
                                        DEBUG2(printk("scsi%ld: %s: Firmware "
1063 
                                                      "in known state -- "
1064 
                                                      "config and "
1065 
                                                      "boot, state = 0x%x\n",
1066 
                                                      ha->host_no, __func__,
1067 
                                                      ha->firmware_state));
1068 
                                        config_chip = 1;
1069 
                                        soft_reset = 0;
1070 
                                }
1071 
                        } else {
1072 
                                DEBUG2(printk("scsi%ld: %s: Firmware in "
1073 
                                              "unknown state -- resetting,"
1074 
                                              " state = "
1075 
                                              "0x%x\n", ha->host_no, __func__,
1076 
                                              ha->firmware_state));
1077 
                        }
1078 
                        spin_lock_irqsave(&ha->hardware_lock, flags);
1079 
                }
1080 
        } else {
1081 
                DEBUG(printk("scsi%ld: %s: H/W initialization hasn't been "
1082 
                             "started - resetting\n", ha->host_no, __func__));
1083 
        }
1084 
        spin_unlock_irqrestore(&ha->hardware_lock, flags);
1085 
 
1086 
        DEBUG(printk("scsi%ld: %s: Flags soft_rest=%d, config= %d\n ",
1087 
                     ha->host_no, __func__, soft_reset, config_chip));
1088 
        if (soft_reset) {
1089 
                DEBUG(printk("scsi%ld: %s: Issue Soft Reset\n", ha->host_no,
1090 
                             __func__));
1091 
                status = qla4xxx_soft_reset(ha);
1092 
                if (status == QLA_ERROR) {
1093 
                        DEBUG(printk("scsi%d: %s: Soft Reset failed!\n",
1094 
                                     ha->host_no, __func__));
1095 
                        ql4xxx_unlock_drvr(ha);
1096 
                        return QLA_ERROR;
1097 
                }
1098 
                config_chip = 1;
1099 
 
1100 
                /* Reset clears the semaphore, so aquire again */
1101 
                if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
1102 
                        return QLA_ERROR;
1103 
        }
1104 
 
1105 
        if (config_chip) {
1106 
                if ((status = qla4xxx_config_nvram(ha)) == QLA_SUCCESS)
1107 
                        status = qla4xxx_start_firmware_from_flash(ha);
1108 
        }
1109 
 
1110 
        ql4xxx_unlock_drvr(ha);
1111 
        if (status == QLA_SUCCESS) {
1112 
                qla4xxx_get_fw_version(ha);
1113 
                if (test_and_clear_bit(AF_GET_CRASH_RECORD, &ha->flags))
1114 
                        qla4xxx_get_crash_record(ha);
1115 
        } else {
1116 
                DEBUG(printk("scsi%ld: %s: Firmware has NOT started\n",
1117 
                             ha->host_no, __func__));
1118 
        }
1119 
        return status;
1120 
}
1121 
 
1122 
 
1123 
/**
1124 
 * qla4xxx_initialize_adapter - initiailizes hba
1125 
 * @ha: Pointer to host adapter structure.
1126 
 * @renew_ddb_list: Indicates what to do with the adapter's ddb list
1127 
 *      after adapter recovery has completed.
1128 
 *      0=preserve ddb list, 1=destroy and rebuild ddb list
1129 
 *
1130 
 * This routine parforms all of the steps necessary to initialize the adapter.
1131 
 *
1132 
 **/
1133 
int qla4xxx_initialize_adapter(struct scsi_qla_host *ha,
1134 
                               uint8_t renew_ddb_list)
1135 
{
1136 
        int status = QLA_ERROR;
1137 
        int8_t ip_address[IP_ADDR_LEN] = {0} ;
1138 
 
1139 
        ha->eeprom_cmd_data = 0;
1140 
 
1141 
        qla4x00_pci_config(ha);
1142 
 
1143 
        qla4xxx_disable_intrs(ha);
1144 
 
1145 
        /* Initialize the Host adapter request/response queues and firmware */
1146 
        if (qla4xxx_start_firmware(ha) == QLA_ERROR)
1147 
                goto exit_init_hba;
1148 
 
1149 
        if (qla4xxx_validate_mac_address(ha) == QLA_ERROR)
1150 
                goto exit_init_hba;
1151 
 
1152 
        if (qla4xxx_init_local_data(ha) == QLA_ERROR)
1153 
                goto exit_init_hba;
1154 
 
1155 
        status = qla4xxx_init_firmware(ha);
1156 
        if (status == QLA_ERROR)
1157 
                goto exit_init_hba;
1158 
 
1159 
        /*
1160 
         * FW is waiting to get an IP address from DHCP server: Skip building
1161 
         * the ddb_list and wait for DHCP lease acquired aen to come in
1162 
         * followed by 0x8014 aen" to trigger the tgt discovery process.
1163 
         */
1164 
        if (ha->firmware_state & FW_STATE_DHCP_IN_PROGRESS)
1165 
                goto exit_init_online;
1166 
 
1167 
        /* Skip device discovery if ip and subnet is zero */
1168 
        if (memcmp(ha->ip_address, ip_address, IP_ADDR_LEN) == 0 ||
1169 
            memcmp(ha->subnet_mask, ip_address, IP_ADDR_LEN) == 0)
1170 
                goto exit_init_online;
1171 
 
1172 
        if (renew_ddb_list == PRESERVE_DDB_LIST) {
1173 
                /*
1174 
                 * We want to preserve lun states (i.e. suspended, etc.)
1175 
                 * for recovery initiated by the driver.  So just update
1176 
                 * the device states for the existing ddb_list.
1177 
                 */
1178 
                qla4xxx_reinitialize_ddb_list(ha);
1179 
        } else if (renew_ddb_list == REBUILD_DDB_LIST) {
1180 
                /*
1181 
                 * We want to build the ddb_list from scratch during
1182 
                 * driver initialization and recovery initiated by the
1183 
                 * INT_HBA_RESET IOCTL.
1184 
                 */
1185 
                status = qla4xxx_initialize_ddb_list(ha);
1186 
                if (status == QLA_ERROR) {
1187 
                        DEBUG2(printk("%s(%ld) Error occurred during build"
1188 
                                      "ddb list\n", __func__, ha->host_no));
1189 
                        goto exit_init_hba;
1190 
                }
1191 
 
1192 
        }
1193 
        if (!ha->tot_ddbs) {
1194 
                DEBUG2(printk("scsi%ld: Failed to initialize devices or none "
1195 
                              "present in Firmware device database\n",
1196 
                              ha->host_no));
1197 
        }
1198 
 
1199 
exit_init_online:
1200 
        set_bit(AF_ONLINE, &ha->flags);
1201 
exit_init_hba:
1202 
        return status;
1203 
}
1204 
 
1205 
/**
1206 
 * qla4xxx_add_device_dynamically - ddb addition due to an AEN
1207 
 * @ha:  Pointer to host adapter structure.
1208 
 * @fw_ddb_index:  Firmware's device database index
1209 
 *
1210 
 * This routine processes adds a device as a result of an 8014h AEN.
1211 
 **/
1212 
static void qla4xxx_add_device_dynamically(struct scsi_qla_host *ha,
1213 
                                           uint32_t fw_ddb_index)
1214 
{
1215 
        struct ddb_entry * ddb_entry;
1216 
        uint32_t new_tgt;
1217 
 
1218 
        /* First allocate a device structure */
1219 
        ddb_entry = qla4xxx_get_ddb_entry(ha, fw_ddb_index, &new_tgt);
1220 
        if (ddb_entry == NULL) {
1221 
                DEBUG2(printk(KERN_WARNING
1222 
                              "scsi%ld: Unable to allocate memory to add "
1223 
                              "fw_ddb_index %d\n", ha->host_no, fw_ddb_index));
1224 
                return;
1225 
        }
1226 
 
1227 
        if (!new_tgt && (ddb_entry->fw_ddb_index != fw_ddb_index)) {
1228 
                /* Target has been bound to a new fw_ddb_index */
1229 
                qla4xxx_free_ddb(ha, ddb_entry);
1230 
                ddb_entry = qla4xxx_alloc_ddb(ha, fw_ddb_index);
1231 
                if (ddb_entry == NULL) {
1232 
                        DEBUG2(printk(KERN_WARNING
1233 
                                "scsi%ld: Unable to allocate memory"
1234 
                                " to add fw_ddb_index %d\n",
1235 
                                ha->host_no, fw_ddb_index));
1236 
                        return;
1237 
                }
1238 
        }
1239 
        if (qla4xxx_update_ddb_entry(ha, ddb_entry, fw_ddb_index) ==
1240 
                                    QLA_ERROR) {
1241 
                ha->fw_ddb_index_map[fw_ddb_index] =
1242 
                                        (struct ddb_entry *)INVALID_ENTRY;
1243 
                DEBUG2(printk(KERN_WARNING
1244 
                              "scsi%ld: failed to add new device at index "
1245 
                              "[%d]\n Unable to retrieve fw ddb entry\n",
1246 
                              ha->host_no, fw_ddb_index));
1247 
                qla4xxx_free_ddb(ha, ddb_entry);
1248 
                return;
1249 
        }
1250 
 
1251 
        if (qla4xxx_add_sess(ddb_entry)) {
1252 
                DEBUG2(printk(KERN_WARNING
1253 
                              "scsi%ld: failed to add new device at index "
1254 
                              "[%d]\n Unable to add connection and session\n",
1255 
                              ha->host_no, fw_ddb_index));
1256 
                qla4xxx_free_ddb(ha, ddb_entry);
1257 
        }
1258 
}
1259 
 
1260 
/**
1261 
 * qla4xxx_process_ddb_changed - process ddb state change
1262 
 * @ha - Pointer to host adapter structure.
1263 
 * @fw_ddb_index - Firmware's device database index
1264 
 * @state - Device state
1265 
 *
1266 
 * This routine processes a Decive Database Changed AEN Event.
1267 
 **/
1268 
int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha,
1269 
                                uint32_t fw_ddb_index, uint32_t state)
1270 
{
1271 
        struct ddb_entry * ddb_entry;
1272 
        uint32_t old_fw_ddb_device_state;
1273 
 
1274 
        /* check for out of range index */
1275 
        if (fw_ddb_index >= MAX_DDB_ENTRIES)
1276 
                return QLA_ERROR;
1277 
 
1278 
        /* Get the corresponging ddb entry */
1279 
        ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, fw_ddb_index);
1280 
        /* Device does not currently exist in our database. */
1281 
        if (ddb_entry == NULL) {
1282 
                if (state == DDB_DS_SESSION_ACTIVE)
1283 
                        qla4xxx_add_device_dynamically(ha, fw_ddb_index);
1284 
                return QLA_SUCCESS;
1285 
        }
1286 
 
1287 
        /* Device already exists in our database. */
1288 
        old_fw_ddb_device_state = ddb_entry->fw_ddb_device_state;
1289 
        DEBUG2(printk("scsi%ld: %s DDB - old state= 0x%x, new state=0x%x for "
1290 
                      "index [%d]\n", ha->host_no, __func__,
1291 
                      ddb_entry->fw_ddb_device_state, state, fw_ddb_index));
1292 
        if (old_fw_ddb_device_state == state &&
1293 
            state == DDB_DS_SESSION_ACTIVE) {
1294 
                /* Do nothing, state not changed. */
1295 
                return QLA_SUCCESS;
1296 
        }
1297 
 
1298 
        ddb_entry->fw_ddb_device_state = state;
1299 
        /* Device is back online. */
1300 
        if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
1301 
                atomic_set(&ddb_entry->port_down_timer,
1302 
                           ha->port_down_retry_count);
1303 
                atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
1304 
                atomic_set(&ddb_entry->relogin_retry_count, 0);
1305 
                atomic_set(&ddb_entry->relogin_timer, 0);
1306 
                clear_bit(DF_RELOGIN, &ddb_entry->flags);
1307 
                clear_bit(DF_NO_RELOGIN, &ddb_entry->flags);
1308 
                iscsi_if_create_session_done(ddb_entry->conn);
1309 
                /*
1310 
                 * Change the lun state to READY in case the lun TIMEOUT before
1311 
                 * the device came back.
1312 
                 */
1313 
        } else {
1314 
                /* Device went away, try to relogin. */
1315 
                /* Mark device missing */
1316 
                if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE)
1317 
                        qla4xxx_mark_device_missing(ha, ddb_entry);
1318 
                /*
1319 
                 * Relogin if device state changed to a not active state.
1320 
                 * However, do not relogin if this aen is a result of an IOCTL
1321 
                 * logout (DF_NO_RELOGIN) or if this is a discovered device.
1322 
                 */
1323 
                if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_FAILED &&
1324 
                    !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
1325 
                    !test_bit(DF_NO_RELOGIN, &ddb_entry->flags) &&
1326 
                    !test_bit(DF_ISNS_DISCOVERED, &ddb_entry->flags)) {
1327 
                        /*
1328 
                         * This triggers a relogin.  After the relogin_timer
1329 
                         * expires, the relogin gets scheduled.  We must wait a
1330 
                         * minimum amount of time since receiving an 0x8014 AEN
1331 
                         * with failed device_state or a logout response before
1332 
                         * we can issue another relogin.
1333 
                         */
1334 
                        /* Firmware padds this timeout: (time2wait +1).
1335 
                         * Driver retry to login should be longer than F/W.
1336 
                         * Otherwise F/W will fail
1337 
                         * set_ddb() mbx cmd with 0x4005 since it still
1338 
                         * counting down its time2wait.
1339 
                         */
1340 
                        atomic_set(&ddb_entry->relogin_timer, 0);
1341 
                        atomic_set(&ddb_entry->retry_relogin_timer,
1342 
                                   ddb_entry->default_time2wait + 4);
1343 
                }
1344 
        }
1345 
 
1346 
        return QLA_SUCCESS;
1347 
}
1348 
 

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