Merge ../scsi-misc-2.6
[linux-3.10.git] / drivers / scsi / qla2xxx / qla_os.c
1 /*
2  * QLogic Fibre Channel HBA Driver
3  * Copyright (c)  2003-2005 QLogic Corporation
4  *
5  * See LICENSE.qla2xxx for copyright and licensing details.
6  */
7 #include "qla_def.h"
8
9 #include <linux/moduleparam.h>
10 #include <linux/vmalloc.h>
11 #include <linux/delay.h>
12 #include <linux/kthread.h>
13
14 #include <scsi/scsi_tcq.h>
15 #include <scsi/scsicam.h>
16 #include <scsi/scsi_transport.h>
17 #include <scsi/scsi_transport_fc.h>
18
19 /*
20  * Driver version
21  */
22 char qla2x00_version_str[40];
23
24 /*
25  * SRB allocation cache
26  */
27 static kmem_cache_t *srb_cachep;
28
29 /*
30  * Ioctl related information.
31  */
32 static int num_hosts;
33
34 int ql2xlogintimeout = 20;
35 module_param(ql2xlogintimeout, int, S_IRUGO|S_IRUSR);
36 MODULE_PARM_DESC(ql2xlogintimeout,
37                 "Login timeout value in seconds.");
38
39 int qlport_down_retry = 30;
40 module_param(qlport_down_retry, int, S_IRUGO|S_IRUSR);
41 MODULE_PARM_DESC(qlport_down_retry,
42                 "Maximum number of command retries to a port that returns "
43                 "a PORT-DOWN status.");
44
45 int ql2xplogiabsentdevice;
46 module_param(ql2xplogiabsentdevice, int, S_IRUGO|S_IWUSR);
47 MODULE_PARM_DESC(ql2xplogiabsentdevice,
48                 "Option to enable PLOGI to devices that are not present after "
49                 "a Fabric scan.  This is needed for several broken switches. "
50                 "Default is 0 - no PLOGI. 1 - perfom PLOGI.");
51
52 int ql2xloginretrycount = 0;
53 module_param(ql2xloginretrycount, int, S_IRUGO|S_IRUSR);
54 MODULE_PARM_DESC(ql2xloginretrycount,
55                 "Specify an alternate value for the NVRAM login retry count.");
56
57 int ql2xallocfwdump = 1;
58 module_param(ql2xallocfwdump, int, S_IRUGO|S_IRUSR);
59 MODULE_PARM_DESC(ql2xallocfwdump,
60                 "Option to enable allocation of memory for a firmware dump "
61                 "during HBA initialization.  Memory allocation requirements "
62                 "vary by ISP type.  Default is 1 - allocate memory.");
63
64 int extended_error_logging;
65 module_param(extended_error_logging, int, S_IRUGO|S_IRUSR);
66 MODULE_PARM_DESC(extended_error_logging,
67                 "Option to enable extended error logging, "
68                 "Default is 0 - no logging. 1 - log errors.");
69
70 static void qla2x00_free_device(scsi_qla_host_t *);
71
72 static void qla2x00_config_dma_addressing(scsi_qla_host_t *ha);
73
74 int ql2xfdmienable;
75 module_param(ql2xfdmienable, int, S_IRUGO|S_IRUSR);
76 MODULE_PARM_DESC(ql2xfdmienable,
77                 "Enables FDMI registratons "
78                 "Default is 0 - no FDMI. 1 - perfom FDMI.");
79
80 /*
81  * SCSI host template entry points
82  */
83 static int qla2xxx_slave_configure(struct scsi_device * device);
84 static int qla2xxx_slave_alloc(struct scsi_device *);
85 static void qla2xxx_slave_destroy(struct scsi_device *);
86 static int qla2x00_queuecommand(struct scsi_cmnd *cmd,
87                 void (*fn)(struct scsi_cmnd *));
88 static int qla24xx_queuecommand(struct scsi_cmnd *cmd,
89                 void (*fn)(struct scsi_cmnd *));
90 static int qla2xxx_eh_abort(struct scsi_cmnd *);
91 static int qla2xxx_eh_device_reset(struct scsi_cmnd *);
92 static int qla2xxx_eh_bus_reset(struct scsi_cmnd *);
93 static int qla2xxx_eh_host_reset(struct scsi_cmnd *);
94 static int qla2x00_loop_reset(scsi_qla_host_t *ha);
95 static int qla2x00_device_reset(scsi_qla_host_t *, fc_port_t *);
96
97 static int qla2x00_change_queue_depth(struct scsi_device *, int);
98 static int qla2x00_change_queue_type(struct scsi_device *, int);
99
100 static struct scsi_host_template qla2x00_driver_template = {
101         .module                 = THIS_MODULE,
102         .name                   = QLA2XXX_DRIVER_NAME,
103         .queuecommand           = qla2x00_queuecommand,
104
105         .eh_abort_handler       = qla2xxx_eh_abort,
106         .eh_device_reset_handler = qla2xxx_eh_device_reset,
107         .eh_bus_reset_handler   = qla2xxx_eh_bus_reset,
108         .eh_host_reset_handler  = qla2xxx_eh_host_reset,
109
110         .slave_configure        = qla2xxx_slave_configure,
111
112         .slave_alloc            = qla2xxx_slave_alloc,
113         .slave_destroy          = qla2xxx_slave_destroy,
114         .change_queue_depth     = qla2x00_change_queue_depth,
115         .change_queue_type      = qla2x00_change_queue_type,
116         .this_id                = -1,
117         .cmd_per_lun            = 3,
118         .use_clustering         = ENABLE_CLUSTERING,
119         .sg_tablesize           = SG_ALL,
120
121         /*
122          * The RISC allows for each command to transfer (2^32-1) bytes of data,
123          * which equates to 0x800000 sectors.
124          */
125         .max_sectors            = 0xFFFF,
126         .shost_attrs            = qla2x00_host_attrs,
127 };
128
129 static struct scsi_host_template qla24xx_driver_template = {
130         .module                 = THIS_MODULE,
131         .name                   = QLA2XXX_DRIVER_NAME,
132         .queuecommand           = qla24xx_queuecommand,
133
134         .eh_abort_handler       = qla2xxx_eh_abort,
135         .eh_device_reset_handler = qla2xxx_eh_device_reset,
136         .eh_bus_reset_handler   = qla2xxx_eh_bus_reset,
137         .eh_host_reset_handler  = qla2xxx_eh_host_reset,
138
139         .slave_configure        = qla2xxx_slave_configure,
140
141         .slave_alloc            = qla2xxx_slave_alloc,
142         .slave_destroy          = qla2xxx_slave_destroy,
143         .change_queue_depth     = qla2x00_change_queue_depth,
144         .change_queue_type      = qla2x00_change_queue_type,
145         .this_id                = -1,
146         .cmd_per_lun            = 3,
147         .use_clustering         = ENABLE_CLUSTERING,
148         .sg_tablesize           = SG_ALL,
149
150         .max_sectors            = 0xFFFF,
151         .shost_attrs            = qla2x00_host_attrs,
152 };
153
154 static struct scsi_transport_template *qla2xxx_transport_template = NULL;
155
156 /* TODO Convert to inlines
157  *
158  * Timer routines
159  */
160 #define WATCH_INTERVAL          1       /* number of seconds */
161
162 static void qla2x00_timer(scsi_qla_host_t *);
163
164 static __inline__ void qla2x00_start_timer(scsi_qla_host_t *,
165     void *, unsigned long);
166 static __inline__ void qla2x00_restart_timer(scsi_qla_host_t *, unsigned long);
167 static __inline__ void qla2x00_stop_timer(scsi_qla_host_t *);
168
169 static inline void
170 qla2x00_start_timer(scsi_qla_host_t *ha, void *func, unsigned long interval)
171 {
172         init_timer(&ha->timer);
173         ha->timer.expires = jiffies + interval * HZ;
174         ha->timer.data = (unsigned long)ha;
175         ha->timer.function = (void (*)(unsigned long))func;
176         add_timer(&ha->timer);
177         ha->timer_active = 1;
178 }
179
180 static inline void
181 qla2x00_restart_timer(scsi_qla_host_t *ha, unsigned long interval)
182 {
183         mod_timer(&ha->timer, jiffies + interval * HZ);
184 }
185
186 static __inline__ void
187 qla2x00_stop_timer(scsi_qla_host_t *ha)
188 {
189         del_timer_sync(&ha->timer);
190         ha->timer_active = 0;
191 }
192
193 static int qla2x00_do_dpc(void *data);
194
195 static void qla2x00_rst_aen(scsi_qla_host_t *);
196
197 static uint8_t qla2x00_mem_alloc(scsi_qla_host_t *);
198 static void qla2x00_mem_free(scsi_qla_host_t *ha);
199 static int qla2x00_allocate_sp_pool( scsi_qla_host_t *ha);
200 static void qla2x00_free_sp_pool(scsi_qla_host_t *ha);
201 static void qla2x00_sp_free_dma(scsi_qla_host_t *, srb_t *);
202 void qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *);
203
204 /* -------------------------------------------------------------------------- */
205
206 static char *
207 qla2x00_pci_info_str(struct scsi_qla_host *ha, char *str)
208 {
209         static char *pci_bus_modes[] = {
210                 "33", "66", "100", "133",
211         };
212         uint16_t pci_bus;
213
214         strcpy(str, "PCI");
215         pci_bus = (ha->pci_attr & (BIT_9 | BIT_10)) >> 9;
216         if (pci_bus) {
217                 strcat(str, "-X (");
218                 strcat(str, pci_bus_modes[pci_bus]);
219         } else {
220                 pci_bus = (ha->pci_attr & BIT_8) >> 8;
221                 strcat(str, " (");
222                 strcat(str, pci_bus_modes[pci_bus]);
223         }
224         strcat(str, " MHz)");
225
226         return (str);
227 }
228
229 static char *
230 qla24xx_pci_info_str(struct scsi_qla_host *ha, char *str)
231 {
232         static char *pci_bus_modes[] = { "33", "66", "100", "133", };
233         uint32_t pci_bus;
234         int pcie_reg;
235
236         pcie_reg = pci_find_capability(ha->pdev, PCI_CAP_ID_EXP);
237         if (pcie_reg) {
238                 char lwstr[6];
239                 uint16_t pcie_lstat, lspeed, lwidth;
240
241                 pcie_reg += 0x12;
242                 pci_read_config_word(ha->pdev, pcie_reg, &pcie_lstat);
243                 lspeed = pcie_lstat & (BIT_0 | BIT_1 | BIT_2 | BIT_3);
244                 lwidth = (pcie_lstat &
245                     (BIT_4 | BIT_5 | BIT_6 | BIT_7 | BIT_8 | BIT_9)) >> 4;
246
247                 strcpy(str, "PCIe (");
248                 if (lspeed == 1)
249                         strcat(str, "2.5Gb/s ");
250                 else
251                         strcat(str, "<unknown> ");
252                 snprintf(lwstr, sizeof(lwstr), "x%d)", lwidth);
253                 strcat(str, lwstr);
254
255                 return str;
256         }
257
258         strcpy(str, "PCI");
259         pci_bus = (ha->pci_attr & CSRX_PCIX_BUS_MODE_MASK) >> 8;
260         if (pci_bus == 0 || pci_bus == 8) {
261                 strcat(str, " (");
262                 strcat(str, pci_bus_modes[pci_bus >> 3]);
263         } else {
264                 strcat(str, "-X ");
265                 if (pci_bus & BIT_2)
266                         strcat(str, "Mode 2");
267                 else
268                         strcat(str, "Mode 1");
269                 strcat(str, " (");
270                 strcat(str, pci_bus_modes[pci_bus & ~BIT_2]);
271         }
272         strcat(str, " MHz)");
273
274         return str;
275 }
276
277 char *
278 qla2x00_fw_version_str(struct scsi_qla_host *ha, char *str)
279 {
280         char un_str[10];
281
282         sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
283             ha->fw_minor_version,
284             ha->fw_subminor_version);
285
286         if (ha->fw_attributes & BIT_9) {
287                 strcat(str, "FLX");
288                 return (str);
289         }
290
291         switch (ha->fw_attributes & 0xFF) {
292         case 0x7:
293                 strcat(str, "EF");
294                 break;
295         case 0x17:
296                 strcat(str, "TP");
297                 break;
298         case 0x37:
299                 strcat(str, "IP");
300                 break;
301         case 0x77:
302                 strcat(str, "VI");
303                 break;
304         default:
305                 sprintf(un_str, "(%x)", ha->fw_attributes);
306                 strcat(str, un_str);
307                 break;
308         }
309         if (ha->fw_attributes & 0x100)
310                 strcat(str, "X");
311
312         return (str);
313 }
314
315 char *
316 qla24xx_fw_version_str(struct scsi_qla_host *ha, char *str)
317 {
318         sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
319             ha->fw_minor_version,
320             ha->fw_subminor_version);
321
322         if (ha->fw_attributes & BIT_0)
323                 strcat(str, "[Class 2] ");
324         if (ha->fw_attributes & BIT_1)
325                 strcat(str, "[IP] ");
326         if (ha->fw_attributes & BIT_2)
327                 strcat(str, "[Multi-ID] ");
328         if (ha->fw_attributes & BIT_13)
329                 strcat(str, "[Experimental]");
330         return str;
331 }
332
333 static inline srb_t *
334 qla2x00_get_new_sp(scsi_qla_host_t *ha, fc_port_t *fcport,
335     struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
336 {
337         srb_t *sp;
338
339         sp = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
340         if (!sp)
341                 return sp;
342
343         sp->ha = ha;
344         sp->fcport = fcport;
345         sp->cmd = cmd;
346         sp->flags = 0;
347         CMD_SP(cmd) = (void *)sp;
348         cmd->scsi_done = done;
349
350         return sp;
351 }
352
353 static int
354 qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
355 {
356         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
357         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
358         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
359         srb_t *sp;
360         int rval;
361
362         rval = fc_remote_port_chkready(rport);
363         if (rval) {
364                 cmd->result = rval;
365                 goto qc_fail_command;
366         }
367
368         /* Close window on fcport/rport state-transitioning. */
369         if (!*(fc_port_t **)rport->dd_data) {
370                 cmd->result = DID_IMM_RETRY << 16;
371                 goto qc_fail_command;
372         }
373
374         if (atomic_read(&fcport->state) != FCS_ONLINE) {
375                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
376                     atomic_read(&ha->loop_state) == LOOP_DEAD) {
377                         cmd->result = DID_NO_CONNECT << 16;
378                         goto qc_fail_command;
379                 }
380                 goto qc_host_busy;
381         }
382
383         spin_unlock_irq(ha->host->host_lock);
384
385         sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
386         if (!sp)
387                 goto qc_host_busy_lock;
388
389         rval = qla2x00_start_scsi(sp);
390         if (rval != QLA_SUCCESS)
391                 goto qc_host_busy_free_sp;
392
393         spin_lock_irq(ha->host->host_lock);
394
395         return 0;
396
397 qc_host_busy_free_sp:
398         qla2x00_sp_free_dma(ha, sp);
399         mempool_free(sp, ha->srb_mempool);
400
401 qc_host_busy_lock:
402         spin_lock_irq(ha->host->host_lock);
403
404 qc_host_busy:
405         return SCSI_MLQUEUE_HOST_BUSY;
406
407 qc_fail_command:
408         done(cmd);
409
410         return 0;
411 }
412
413
414 static int
415 qla24xx_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
416 {
417         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
418         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
419         struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
420         srb_t *sp;
421         int rval;
422
423         rval = fc_remote_port_chkready(rport);
424         if (rval) {
425                 cmd->result = rval;
426                 goto qc24_fail_command;
427         }
428
429         /* Close window on fcport/rport state-transitioning. */
430         if (!*(fc_port_t **)rport->dd_data) {
431                 cmd->result = DID_IMM_RETRY << 16;
432                 goto qc24_fail_command;
433         }
434
435         if (atomic_read(&fcport->state) != FCS_ONLINE) {
436                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
437                     atomic_read(&ha->loop_state) == LOOP_DEAD) {
438                         cmd->result = DID_NO_CONNECT << 16;
439                         goto qc24_fail_command;
440                 }
441                 goto qc24_host_busy;
442         }
443
444         spin_unlock_irq(ha->host->host_lock);
445
446         sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
447         if (!sp)
448                 goto qc24_host_busy_lock;
449
450         rval = qla24xx_start_scsi(sp);
451         if (rval != QLA_SUCCESS)
452                 goto qc24_host_busy_free_sp;
453
454         spin_lock_irq(ha->host->host_lock);
455
456         return 0;
457
458 qc24_host_busy_free_sp:
459         qla2x00_sp_free_dma(ha, sp);
460         mempool_free(sp, ha->srb_mempool);
461
462 qc24_host_busy_lock:
463         spin_lock_irq(ha->host->host_lock);
464
465 qc24_host_busy:
466         return SCSI_MLQUEUE_HOST_BUSY;
467
468 qc24_fail_command:
469         done(cmd);
470
471         return 0;
472 }
473
474
475 /*
476  * qla2x00_eh_wait_on_command
477  *    Waits for the command to be returned by the Firmware for some
478  *    max time.
479  *
480  * Input:
481  *    ha = actual ha whose done queue will contain the command
482  *            returned by firmware.
483  *    cmd = Scsi Command to wait on.
484  *    flag = Abort/Reset(Bus or Device Reset)
485  *
486  * Return:
487  *    Not Found : 0
488  *    Found : 1
489  */
490 static int
491 qla2x00_eh_wait_on_command(scsi_qla_host_t *ha, struct scsi_cmnd *cmd)
492 {
493 #define ABORT_POLLING_PERIOD    1000
494 #define ABORT_WAIT_ITER         ((10 * 1000) / (ABORT_POLLING_PERIOD))
495         unsigned long wait_iter = ABORT_WAIT_ITER;
496         int ret = QLA_SUCCESS;
497
498         while (CMD_SP(cmd)) {
499                 msleep(ABORT_POLLING_PERIOD);
500
501                 if (--wait_iter)
502                         break;
503         }
504         if (CMD_SP(cmd))
505                 ret = QLA_FUNCTION_FAILED;
506
507         return ret;
508 }
509
510 /*
511  * qla2x00_wait_for_hba_online
512  *    Wait till the HBA is online after going through
513  *    <= MAX_RETRIES_OF_ISP_ABORT  or
514  *    finally HBA is disabled ie marked offline
515  *
516  * Input:
517  *     ha - pointer to host adapter structure
518  *
519  * Note:
520  *    Does context switching-Release SPIN_LOCK
521  *    (if any) before calling this routine.
522  *
523  * Return:
524  *    Success (Adapter is online) : 0
525  *    Failed  (Adapter is offline/disabled) : 1
526  */
527 int
528 qla2x00_wait_for_hba_online(scsi_qla_host_t *ha)
529 {
530         int             return_status;
531         unsigned long   wait_online;
532
533         wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ);
534         while (((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) ||
535             test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags) ||
536             test_bit(ISP_ABORT_RETRY, &ha->dpc_flags) ||
537             ha->dpc_active) && time_before(jiffies, wait_online)) {
538
539                 msleep(1000);
540         }
541         if (ha->flags.online)
542                 return_status = QLA_SUCCESS;
543         else
544                 return_status = QLA_FUNCTION_FAILED;
545
546         DEBUG2(printk("%s return_status=%d\n",__func__,return_status));
547
548         return (return_status);
549 }
550
551 /*
552  * qla2x00_wait_for_loop_ready
553  *    Wait for MAX_LOOP_TIMEOUT(5 min) value for loop
554  *    to be in LOOP_READY state.
555  * Input:
556  *     ha - pointer to host adapter structure
557  *
558  * Note:
559  *    Does context switching-Release SPIN_LOCK
560  *    (if any) before calling this routine.
561  *
562  *
563  * Return:
564  *    Success (LOOP_READY) : 0
565  *    Failed  (LOOP_NOT_READY) : 1
566  */
567 static inline int
568 qla2x00_wait_for_loop_ready(scsi_qla_host_t *ha)
569 {
570         int      return_status = QLA_SUCCESS;
571         unsigned long loop_timeout ;
572
573         /* wait for 5 min at the max for loop to be ready */
574         loop_timeout = jiffies + (MAX_LOOP_TIMEOUT * HZ);
575
576         while ((!atomic_read(&ha->loop_down_timer) &&
577             atomic_read(&ha->loop_state) == LOOP_DOWN) ||
578             atomic_read(&ha->loop_state) != LOOP_READY) {
579                 if (atomic_read(&ha->loop_state) == LOOP_DEAD) {
580                         return_status = QLA_FUNCTION_FAILED;
581                         break;
582                 }
583                 msleep(1000);
584                 if (time_after_eq(jiffies, loop_timeout)) {
585                         return_status = QLA_FUNCTION_FAILED;
586                         break;
587                 }
588         }
589         return (return_status);
590 }
591
592 /**************************************************************************
593 * qla2xxx_eh_abort
594 *
595 * Description:
596 *    The abort function will abort the specified command.
597 *
598 * Input:
599 *    cmd = Linux SCSI command packet to be aborted.
600 *
601 * Returns:
602 *    Either SUCCESS or FAILED.
603 *
604 * Note:
605 *    Only return FAILED if command not returned by firmware.
606 **************************************************************************/
607 int
608 qla2xxx_eh_abort(struct scsi_cmnd *cmd)
609 {
610         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
611         srb_t *sp;
612         int ret, i;
613         unsigned int id, lun;
614         unsigned long serial;
615         unsigned long flags;
616         int wait = 0;
617
618         if (!CMD_SP(cmd))
619                 return SUCCESS;
620
621         ret = SUCCESS;
622
623         id = cmd->device->id;
624         lun = cmd->device->lun;
625         serial = cmd->serial_number;
626
627         /* Check active list for command command. */
628         spin_lock_irqsave(&ha->hardware_lock, flags);
629         for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
630                 sp = ha->outstanding_cmds[i];
631
632                 if (sp == NULL)
633                         continue;
634
635                 if (sp->cmd != cmd)
636                         continue;
637
638                 DEBUG2(printk("%s(%ld): aborting sp %p from RISC. pid=%ld.\n",
639                     __func__, ha->host_no, sp, serial));
640                 DEBUG3(qla2x00_print_scsi_cmd(cmd));
641
642                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
643                 if (ha->isp_ops.abort_command(ha, sp)) {
644                         DEBUG2(printk("%s(%ld): abort_command "
645                             "mbx failed.\n", __func__, ha->host_no));
646                 } else {
647                         DEBUG3(printk("%s(%ld): abort_command "
648                             "mbx success.\n", __func__, ha->host_no));
649                         wait = 1;
650                 }
651                 spin_lock_irqsave(&ha->hardware_lock, flags);
652
653                 break;
654         }
655         spin_unlock_irqrestore(&ha->hardware_lock, flags);
656
657         /* Wait for the command to be returned. */
658         if (wait) {
659                 if (qla2x00_eh_wait_on_command(ha, cmd) != QLA_SUCCESS) {
660                         qla_printk(KERN_ERR, ha,
661                             "scsi(%ld:%d:%d): Abort handler timed out -- %lx "
662                             "%x.\n", ha->host_no, id, lun, serial, ret);
663                         ret = FAILED;
664                 }
665         }
666
667         qla_printk(KERN_INFO, ha,
668             "scsi(%ld:%d:%d): Abort command issued -- %d %lx %x.\n",
669             ha->host_no, id, lun, wait, serial, ret);
670
671         return ret;
672 }
673
674 /**************************************************************************
675 * qla2x00_eh_wait_for_pending_target_commands
676 *
677 * Description:
678 *    Waits for all the commands to come back from the specified target.
679 *
680 * Input:
681 *    ha - pointer to scsi_qla_host structure.
682 *    t  - target
683 * Returns:
684 *    Either SUCCESS or FAILED.
685 *
686 * Note:
687 **************************************************************************/
688 static int
689 qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t)
690 {
691         int     cnt;
692         int     status;
693         srb_t           *sp;
694         struct scsi_cmnd *cmd;
695         unsigned long flags;
696
697         status = 0;
698
699         /*
700          * Waiting for all commands for the designated target in the active
701          * array
702          */
703         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
704                 spin_lock_irqsave(&ha->hardware_lock, flags);
705                 sp = ha->outstanding_cmds[cnt];
706                 if (sp) {
707                         cmd = sp->cmd;
708                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
709                         if (cmd->device->id == t) {
710                                 if (!qla2x00_eh_wait_on_command(ha, cmd)) {
711                                         status = 1;
712                                         break;
713                                 }
714                         }
715                 } else {
716                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
717                 }
718         }
719         return (status);
720 }
721
722
723 /**************************************************************************
724 * qla2xxx_eh_device_reset
725 *
726 * Description:
727 *    The device reset function will reset the target and abort any
728 *    executing commands.
729 *
730 *    NOTE: The use of SP is undefined within this context.  Do *NOT*
731 *          attempt to use this value, even if you determine it is
732 *          non-null.
733 *
734 * Input:
735 *    cmd = Linux SCSI command packet of the command that cause the
736 *          bus device reset.
737 *
738 * Returns:
739 *    SUCCESS/FAILURE (defined as macro in scsi.h).
740 *
741 **************************************************************************/
742 int
743 qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
744 {
745         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
746         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
747         srb_t *sp;
748         int ret;
749         unsigned int id, lun;
750         unsigned long serial;
751
752         ret = FAILED;
753
754         id = cmd->device->id;
755         lun = cmd->device->lun;
756         serial = cmd->serial_number;
757
758         sp = (srb_t *) CMD_SP(cmd);
759         if (!sp || !fcport)
760                 return ret;
761
762         qla_printk(KERN_INFO, ha,
763             "scsi(%ld:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, id, lun);
764
765         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
766                 goto eh_dev_reset_done;
767
768         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
769                 if (qla2x00_device_reset(ha, fcport) == 0)
770                         ret = SUCCESS;
771
772 #if defined(LOGOUT_AFTER_DEVICE_RESET)
773                 if (ret == SUCCESS) {
774                         if (fcport->flags & FC_FABRIC_DEVICE) {
775                                 ha->isp_ops.fabric_logout(ha, fcport->loop_id);
776                                 qla2x00_mark_device_lost(ha, fcport, 0, 0);
777                         }
778                 }
779 #endif
780         } else {
781                 DEBUG2(printk(KERN_INFO
782                     "%s failed: loop not ready\n",__func__));
783         }
784
785         if (ret == FAILED) {
786                 DEBUG3(printk("%s(%ld): device reset failed\n",
787                     __func__, ha->host_no));
788                 qla_printk(KERN_INFO, ha, "%s: device reset failed\n",
789                     __func__);
790
791                 goto eh_dev_reset_done;
792         }
793
794         /* Flush outstanding commands. */
795         if (qla2x00_eh_wait_for_pending_target_commands(ha, id))
796                 ret = FAILED;
797         if (ret == FAILED) {
798                 DEBUG3(printk("%s(%ld): failed while waiting for commands\n",
799                     __func__, ha->host_no));
800                 qla_printk(KERN_INFO, ha,
801                     "%s: failed while waiting for commands\n", __func__);
802         } else
803                 qla_printk(KERN_INFO, ha,
804                     "scsi(%ld:%d:%d): DEVICE RESET SUCCEEDED.\n", ha->host_no,
805                     id, lun);
806  eh_dev_reset_done:
807         return ret;
808 }
809
810 /**************************************************************************
811 * qla2x00_eh_wait_for_pending_commands
812 *
813 * Description:
814 *    Waits for all the commands to come back from the specified host.
815 *
816 * Input:
817 *    ha - pointer to scsi_qla_host structure.
818 *
819 * Returns:
820 *    1 : SUCCESS
821 *    0 : FAILED
822 *
823 * Note:
824 **************************************************************************/
825 static int
826 qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha)
827 {
828         int     cnt;
829         int     status;
830         srb_t           *sp;
831         struct scsi_cmnd *cmd;
832         unsigned long flags;
833
834         status = 1;
835
836         /*
837          * Waiting for all commands for the designated target in the active
838          * array
839          */
840         for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
841                 spin_lock_irqsave(&ha->hardware_lock, flags);
842                 sp = ha->outstanding_cmds[cnt];
843                 if (sp) {
844                         cmd = sp->cmd;
845                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
846                         status = qla2x00_eh_wait_on_command(ha, cmd);
847                         if (status == 0)
848                                 break;
849                 }
850                 else {
851                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
852                 }
853         }
854         return (status);
855 }
856
857
858 /**************************************************************************
859 * qla2xxx_eh_bus_reset
860 *
861 * Description:
862 *    The bus reset function will reset the bus and abort any executing
863 *    commands.
864 *
865 * Input:
866 *    cmd = Linux SCSI command packet of the command that cause the
867 *          bus reset.
868 *
869 * Returns:
870 *    SUCCESS/FAILURE (defined as macro in scsi.h).
871 *
872 **************************************************************************/
873 int
874 qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
875 {
876         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
877         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
878         srb_t *sp;
879         int ret;
880         unsigned int id, lun;
881         unsigned long serial;
882
883         ret = FAILED;
884
885         id = cmd->device->id;
886         lun = cmd->device->lun;
887         serial = cmd->serial_number;
888
889         sp = (srb_t *) CMD_SP(cmd);
890         if (!sp || !fcport)
891                 return ret;
892
893         qla_printk(KERN_INFO, ha,
894             "scsi(%ld:%d:%d): LOOP RESET ISSUED.\n", ha->host_no, id, lun);
895
896         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
897                 DEBUG2(printk("%s failed:board disabled\n",__func__));
898                 goto eh_bus_reset_done;
899         }
900
901         if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
902                 if (qla2x00_loop_reset(ha) == QLA_SUCCESS)
903                         ret = SUCCESS;
904         }
905         if (ret == FAILED)
906                 goto eh_bus_reset_done;
907
908         /* Flush outstanding commands. */
909         if (!qla2x00_eh_wait_for_pending_commands(ha))
910                 ret = FAILED;
911
912 eh_bus_reset_done:
913         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
914             (ret == FAILED) ? "failed" : "succeded");
915
916         return ret;
917 }
918
919 /**************************************************************************
920 * qla2xxx_eh_host_reset
921 *
922 * Description:
923 *    The reset function will reset the Adapter.
924 *
925 * Input:
926 *      cmd = Linux SCSI command packet of the command that cause the
927 *            adapter reset.
928 *
929 * Returns:
930 *      Either SUCCESS or FAILED.
931 *
932 * Note:
933 **************************************************************************/
934 int
935 qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
936 {
937         scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
938         fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
939         srb_t *sp;
940         int ret;
941         unsigned int id, lun;
942         unsigned long serial;
943
944         ret = FAILED;
945
946         id = cmd->device->id;
947         lun = cmd->device->lun;
948         serial = cmd->serial_number;
949
950         sp = (srb_t *) CMD_SP(cmd);
951         if (!sp || !fcport)
952                 return ret;
953
954         qla_printk(KERN_INFO, ha,
955             "scsi(%ld:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, id, lun);
956
957         if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
958                 goto eh_host_reset_lock;
959
960         /*
961          * Fixme-may be dpc thread is active and processing
962          * loop_resync,so wait a while for it to
963          * be completed and then issue big hammer.Otherwise
964          * it may cause I/O failure as big hammer marks the
965          * devices as lost kicking of the port_down_timer
966          * while dpc is stuck for the mailbox to complete.
967          */
968         qla2x00_wait_for_loop_ready(ha);
969         set_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
970         if (qla2x00_abort_isp(ha)) {
971                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
972                 /* failed. schedule dpc to try */
973                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
974
975                 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
976                         goto eh_host_reset_lock;
977         }
978         clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
979
980         /* Waiting for our command in done_queue to be returned to OS.*/
981         if (qla2x00_eh_wait_for_pending_commands(ha))
982                 ret = SUCCESS;
983
984 eh_host_reset_lock:
985         qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
986             (ret == FAILED) ? "failed" : "succeded");
987
988         return ret;
989 }
990
991 /*
992 * qla2x00_loop_reset
993 *      Issue loop reset.
994 *
995 * Input:
996 *      ha = adapter block pointer.
997 *
998 * Returns:
999 *      0 = success
1000 */
1001 static int
1002 qla2x00_loop_reset(scsi_qla_host_t *ha)
1003 {
1004         int status = QLA_SUCCESS;
1005         struct fc_port *fcport;
1006
1007         if (ha->flags.enable_lip_reset) {
1008                 status = qla2x00_lip_reset(ha);
1009         }
1010
1011         if (status == QLA_SUCCESS && ha->flags.enable_target_reset) {
1012                 list_for_each_entry(fcport, &ha->fcports, list) {
1013                         if (fcport->port_type != FCT_TARGET)
1014                                 continue;
1015
1016                         status = qla2x00_device_reset(ha, fcport);
1017                         if (status != QLA_SUCCESS)
1018                                 break;
1019                 }
1020         }
1021
1022         if (status == QLA_SUCCESS &&
1023                 ((!ha->flags.enable_target_reset &&
1024                   !ha->flags.enable_lip_reset) ||
1025                 ha->flags.enable_lip_full_login)) {
1026
1027                 status = qla2x00_full_login_lip(ha);
1028         }
1029
1030         /* Issue marker command only when we are going to start the I/O */
1031         ha->marker_needed = 1;
1032
1033         if (status) {
1034                 /* Empty */
1035                 DEBUG2_3(printk("%s(%ld): **** FAILED ****\n",
1036                                 __func__,
1037                                 ha->host_no));
1038         } else {
1039                 /* Empty */
1040                 DEBUG3(printk("%s(%ld): exiting normally.\n",
1041                                 __func__,
1042                                 ha->host_no));
1043         }
1044
1045         return(status);
1046 }
1047
1048 /*
1049  * qla2x00_device_reset
1050  *      Issue bus device reset message to the target.
1051  *
1052  * Input:
1053  *      ha = adapter block pointer.
1054  *      t = SCSI ID.
1055  *      TARGET_QUEUE_LOCK must be released.
1056  *      ADAPTER_STATE_LOCK must be released.
1057  *
1058  * Context:
1059  *      Kernel context.
1060  */
1061 static int
1062 qla2x00_device_reset(scsi_qla_host_t *ha, fc_port_t *reset_fcport)
1063 {
1064         /* Abort Target command will clear Reservation */
1065         return ha->isp_ops.abort_target(reset_fcport);
1066 }
1067
1068 static int
1069 qla2xxx_slave_alloc(struct scsi_device *sdev)
1070 {
1071         struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
1072
1073         if (!rport || fc_remote_port_chkready(rport))
1074                 return -ENXIO;
1075
1076         sdev->hostdata = *(fc_port_t **)rport->dd_data;
1077
1078         return 0;
1079 }
1080
1081 static int
1082 qla2xxx_slave_configure(struct scsi_device *sdev)
1083 {
1084         scsi_qla_host_t *ha = to_qla_host(sdev->host);
1085         struct fc_rport *rport = starget_to_rport(sdev->sdev_target);
1086
1087         if (sdev->tagged_supported)
1088                 scsi_activate_tcq(sdev, 32);
1089         else
1090                 scsi_deactivate_tcq(sdev, 32);
1091
1092         rport->dev_loss_tmo = ha->port_down_retry_count + 5;
1093
1094         return 0;
1095 }
1096
1097 static void
1098 qla2xxx_slave_destroy(struct scsi_device *sdev)
1099 {
1100         sdev->hostdata = NULL;
1101 }
1102
1103 static int
1104 qla2x00_change_queue_depth(struct scsi_device *sdev, int qdepth)
1105 {
1106         scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
1107         return sdev->queue_depth;
1108 }
1109
1110 static int
1111 qla2x00_change_queue_type(struct scsi_device *sdev, int tag_type)
1112 {
1113         if (sdev->tagged_supported) {
1114                 scsi_set_tag_type(sdev, tag_type);
1115                 if (tag_type)
1116                         scsi_activate_tcq(sdev, sdev->queue_depth);
1117                 else
1118                         scsi_deactivate_tcq(sdev, sdev->queue_depth);
1119         } else
1120                 tag_type = 0;
1121
1122         return tag_type;
1123 }
1124
1125 /**
1126  * qla2x00_config_dma_addressing() - Configure OS DMA addressing method.
1127  * @ha: HA context
1128  *
1129  * At exit, the @ha's flags.enable_64bit_addressing set to indicated
1130  * supported addressing method.
1131  */
1132 static void
1133 qla2x00_config_dma_addressing(scsi_qla_host_t *ha)
1134 {
1135         /* Assume a 32bit DMA mask. */
1136         ha->flags.enable_64bit_addressing = 0;
1137
1138         if (!dma_set_mask(&ha->pdev->dev, DMA_64BIT_MASK)) {
1139                 /* Any upper-dword bits set? */
1140                 if (MSD(dma_get_required_mask(&ha->pdev->dev)) &&
1141                     !pci_set_consistent_dma_mask(ha->pdev, DMA_64BIT_MASK)) {
1142                         /* Ok, a 64bit DMA mask is applicable. */
1143                         ha->flags.enable_64bit_addressing = 1;
1144                         ha->isp_ops.calc_req_entries = qla2x00_calc_iocbs_64;
1145                         ha->isp_ops.build_iocbs = qla2x00_build_scsi_iocbs_64;
1146                         return;
1147                 }
1148         }
1149
1150         dma_set_mask(&ha->pdev->dev, DMA_32BIT_MASK);
1151         pci_set_consistent_dma_mask(ha->pdev, DMA_32BIT_MASK);
1152 }
1153
1154 static inline void
1155 qla2x00_set_isp_flags(scsi_qla_host_t *ha)
1156 {
1157         ha->device_type = DT_EXTENDED_IDS;
1158         switch (ha->pdev->device) {
1159         case PCI_DEVICE_ID_QLOGIC_ISP2100:
1160                 ha->device_type |= DT_ISP2100;
1161                 ha->device_type &= ~DT_EXTENDED_IDS;
1162                 ha->fw_srisc_address = RISC_START_ADDRESS_2100;
1163                 break;
1164         case PCI_DEVICE_ID_QLOGIC_ISP2200:
1165                 ha->device_type |= DT_ISP2200;
1166                 ha->device_type &= ~DT_EXTENDED_IDS;
1167                 ha->fw_srisc_address = RISC_START_ADDRESS_2100;
1168                 break;
1169         case PCI_DEVICE_ID_QLOGIC_ISP2300:
1170                 ha->device_type |= DT_ISP2300;
1171                 ha->device_type |= DT_ZIO_SUPPORTED;
1172                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1173                 break;
1174         case PCI_DEVICE_ID_QLOGIC_ISP2312:
1175                 ha->device_type |= DT_ISP2312;
1176                 ha->device_type |= DT_ZIO_SUPPORTED;
1177                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1178                 break;
1179         case PCI_DEVICE_ID_QLOGIC_ISP2322:
1180                 ha->device_type |= DT_ISP2322;
1181                 ha->device_type |= DT_ZIO_SUPPORTED;
1182                 if (ha->pdev->subsystem_vendor == 0x1028 &&
1183                     ha->pdev->subsystem_device == 0x0170)
1184                         ha->device_type |= DT_OEM_001;
1185                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1186                 break;
1187         case PCI_DEVICE_ID_QLOGIC_ISP6312:
1188                 ha->device_type |= DT_ISP6312;
1189                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1190                 break;
1191         case PCI_DEVICE_ID_QLOGIC_ISP6322:
1192                 ha->device_type |= DT_ISP6322;
1193                 ha->fw_srisc_address = RISC_START_ADDRESS_2300;
1194                 break;
1195         case PCI_DEVICE_ID_QLOGIC_ISP2422:
1196                 ha->device_type |= DT_ISP2422;
1197                 ha->device_type |= DT_ZIO_SUPPORTED;
1198                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1199                 break;
1200         case PCI_DEVICE_ID_QLOGIC_ISP2432:
1201                 ha->device_type |= DT_ISP2432;
1202                 ha->device_type |= DT_ZIO_SUPPORTED;
1203                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1204                 break;
1205         case PCI_DEVICE_ID_QLOGIC_ISP5422:
1206                 ha->device_type |= DT_ISP5422;
1207                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1208                 break;
1209         case PCI_DEVICE_ID_QLOGIC_ISP5432:
1210                 ha->device_type |= DT_ISP5432;
1211                 ha->fw_srisc_address = RISC_START_ADDRESS_2400;
1212                 break;
1213         }
1214 }
1215
1216 static int
1217 qla2x00_iospace_config(scsi_qla_host_t *ha)
1218 {
1219         unsigned long   pio, pio_len, pio_flags;
1220         unsigned long   mmio, mmio_len, mmio_flags;
1221
1222         /* We only need PIO for Flash operations on ISP2312 v2 chips. */
1223         pio = pci_resource_start(ha->pdev, 0);
1224         pio_len = pci_resource_len(ha->pdev, 0);
1225         pio_flags = pci_resource_flags(ha->pdev, 0);
1226         if (pio_flags & IORESOURCE_IO) {
1227                 if (pio_len < MIN_IOBASE_LEN) {
1228                         qla_printk(KERN_WARNING, ha,
1229                             "Invalid PCI I/O region size (%s)...\n",
1230                                 pci_name(ha->pdev));
1231                         pio = 0;
1232                 }
1233         } else {
1234                 qla_printk(KERN_WARNING, ha,
1235                     "region #0 not a PIO resource (%s)...\n",
1236                     pci_name(ha->pdev));
1237                 pio = 0;
1238         }
1239
1240         /* Use MMIO operations for all accesses. */
1241         mmio = pci_resource_start(ha->pdev, 1);
1242         mmio_len = pci_resource_len(ha->pdev, 1);
1243         mmio_flags = pci_resource_flags(ha->pdev, 1);
1244
1245         if (!(mmio_flags & IORESOURCE_MEM)) {
1246                 qla_printk(KERN_ERR, ha,
1247                     "region #0 not an MMIO resource (%s), aborting\n",
1248                     pci_name(ha->pdev));
1249                 goto iospace_error_exit;
1250         }
1251         if (mmio_len < MIN_IOBASE_LEN) {
1252                 qla_printk(KERN_ERR, ha,
1253                     "Invalid PCI mem region size (%s), aborting\n",
1254                         pci_name(ha->pdev));
1255                 goto iospace_error_exit;
1256         }
1257
1258         if (pci_request_regions(ha->pdev, QLA2XXX_DRIVER_NAME)) {
1259                 qla_printk(KERN_WARNING, ha,
1260                     "Failed to reserve PIO/MMIO regions (%s)\n",
1261                     pci_name(ha->pdev));
1262
1263                 goto iospace_error_exit;
1264         }
1265
1266         ha->pio_address = pio;
1267         ha->pio_length = pio_len;
1268         ha->iobase = ioremap(mmio, MIN_IOBASE_LEN);
1269         if (!ha->iobase) {
1270                 qla_printk(KERN_ERR, ha,
1271                     "cannot remap MMIO (%s), aborting\n", pci_name(ha->pdev));
1272
1273                 goto iospace_error_exit;
1274         }
1275
1276         return (0);
1277
1278 iospace_error_exit:
1279         return (-ENOMEM);
1280 }
1281
1282 static void
1283 qla2x00_enable_intrs(scsi_qla_host_t *ha)
1284 {
1285         unsigned long flags = 0;
1286         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1287
1288         spin_lock_irqsave(&ha->hardware_lock, flags);
1289         ha->interrupts_on = 1;
1290         /* enable risc and host interrupts */
1291         WRT_REG_WORD(&reg->ictrl, ICR_EN_INT | ICR_EN_RISC);
1292         RD_REG_WORD(&reg->ictrl);
1293         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1294
1295 }
1296
1297 static void
1298 qla2x00_disable_intrs(scsi_qla_host_t *ha)
1299 {
1300         unsigned long flags = 0;
1301         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1302
1303         spin_lock_irqsave(&ha->hardware_lock, flags);
1304         ha->interrupts_on = 0;
1305         /* disable risc and host interrupts */
1306         WRT_REG_WORD(&reg->ictrl, 0);
1307         RD_REG_WORD(&reg->ictrl);
1308         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1309 }
1310
1311 static void
1312 qla24xx_enable_intrs(scsi_qla_host_t *ha)
1313 {
1314         unsigned long flags = 0;
1315         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1316
1317         spin_lock_irqsave(&ha->hardware_lock, flags);
1318         ha->interrupts_on = 1;
1319         WRT_REG_DWORD(&reg->ictrl, ICRX_EN_RISC_INT);
1320         RD_REG_DWORD(&reg->ictrl);
1321         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1322 }
1323
1324 static void
1325 qla24xx_disable_intrs(scsi_qla_host_t *ha)
1326 {
1327         unsigned long flags = 0;
1328         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1329
1330         spin_lock_irqsave(&ha->hardware_lock, flags);
1331         ha->interrupts_on = 0;
1332         WRT_REG_DWORD(&reg->ictrl, 0);
1333         RD_REG_DWORD(&reg->ictrl);
1334         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1335 }
1336
1337 /*
1338  * PCI driver interface
1339  */
1340 static int __devinit
1341 qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
1342 {
1343         int     ret = -ENODEV;
1344         device_reg_t __iomem *reg;
1345         struct Scsi_Host *host;
1346         scsi_qla_host_t *ha;
1347         unsigned long   flags = 0;
1348         unsigned long   wait_switch = 0;
1349         char pci_info[20];
1350         char fw_str[30];
1351         fc_port_t *fcport;
1352         struct scsi_host_template *sht;
1353
1354         if (pci_enable_device(pdev))
1355                 goto probe_out;
1356
1357         sht = &qla2x00_driver_template;
1358         if (pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2422 ||
1359             pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2432)
1360                 sht = &qla24xx_driver_template;
1361         host = scsi_host_alloc(sht, sizeof(scsi_qla_host_t));
1362         if (host == NULL) {
1363                 printk(KERN_WARNING
1364                     "qla2xxx: Couldn't allocate host from scsi layer!\n");
1365                 goto probe_disable_device;
1366         }
1367
1368         /* Clear our data area */
1369         ha = (scsi_qla_host_t *)host->hostdata;
1370         memset(ha, 0, sizeof(scsi_qla_host_t));
1371
1372         ha->pdev = pdev;
1373         ha->host = host;
1374         ha->host_no = host->host_no;
1375         sprintf(ha->host_str, "%s_%ld", QLA2XXX_DRIVER_NAME, ha->host_no);
1376
1377         /* Set ISP-type information. */
1378         qla2x00_set_isp_flags(ha);
1379
1380         /* Configure PCI I/O space */
1381         ret = qla2x00_iospace_config(ha);
1382         if (ret)
1383                 goto probe_failed;
1384
1385         qla_printk(KERN_INFO, ha,
1386             "Found an ISP%04X, irq %d, iobase 0x%p\n", pdev->device, pdev->irq,
1387             ha->iobase);
1388
1389         spin_lock_init(&ha->hardware_lock);
1390
1391         ha->prev_topology = 0;
1392         ha->init_cb_size = sizeof(init_cb_t);
1393         ha->mgmt_svr_loop_id = MANAGEMENT_SERVER;
1394         ha->link_data_rate = LDR_UNKNOWN;
1395         ha->optrom_size = OPTROM_SIZE_2300;
1396
1397         /* Assign ISP specific operations. */
1398         ha->isp_ops.pci_config          = qla2100_pci_config;
1399         ha->isp_ops.reset_chip          = qla2x00_reset_chip;
1400         ha->isp_ops.chip_diag           = qla2x00_chip_diag;
1401         ha->isp_ops.config_rings        = qla2x00_config_rings;
1402         ha->isp_ops.reset_adapter       = qla2x00_reset_adapter;
1403         ha->isp_ops.nvram_config        = qla2x00_nvram_config;
1404         ha->isp_ops.update_fw_options   = qla2x00_update_fw_options;
1405         ha->isp_ops.load_risc           = qla2x00_load_risc;
1406         ha->isp_ops.pci_info_str        = qla2x00_pci_info_str;
1407         ha->isp_ops.fw_version_str      = qla2x00_fw_version_str;
1408         ha->isp_ops.intr_handler        = qla2100_intr_handler;
1409         ha->isp_ops.enable_intrs        = qla2x00_enable_intrs;
1410         ha->isp_ops.disable_intrs       = qla2x00_disable_intrs;
1411         ha->isp_ops.abort_command       = qla2x00_abort_command;
1412         ha->isp_ops.abort_target        = qla2x00_abort_target;
1413         ha->isp_ops.fabric_login        = qla2x00_login_fabric;
1414         ha->isp_ops.fabric_logout       = qla2x00_fabric_logout;
1415         ha->isp_ops.calc_req_entries    = qla2x00_calc_iocbs_32;
1416         ha->isp_ops.build_iocbs         = qla2x00_build_scsi_iocbs_32;
1417         ha->isp_ops.prep_ms_iocb        = qla2x00_prep_ms_iocb;
1418         ha->isp_ops.prep_ms_fdmi_iocb   = qla2x00_prep_ms_fdmi_iocb;
1419         ha->isp_ops.read_nvram          = qla2x00_read_nvram_data;
1420         ha->isp_ops.write_nvram         = qla2x00_write_nvram_data;
1421         ha->isp_ops.fw_dump             = qla2100_fw_dump;
1422         ha->isp_ops.read_optrom         = qla2x00_read_optrom_data;
1423         ha->isp_ops.write_optrom        = qla2x00_write_optrom_data;
1424         if (IS_QLA2100(ha)) {
1425                 host->max_id = MAX_TARGETS_2100;
1426                 ha->mbx_count = MAILBOX_REGISTER_COUNT_2100;
1427                 ha->request_q_length = REQUEST_ENTRY_CNT_2100;
1428                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1429                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1430                 host->sg_tablesize = 32;
1431                 ha->gid_list_info_size = 4;
1432         } else if (IS_QLA2200(ha)) {
1433                 host->max_id = MAX_TARGETS_2200;
1434                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1435                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1436                 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1437                 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1438                 ha->gid_list_info_size = 4;
1439         } else if (IS_QLA23XX(ha)) {
1440                 host->max_id = MAX_TARGETS_2200;
1441                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1442                 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1443                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1444                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1445                 ha->isp_ops.pci_config = qla2300_pci_config;
1446                 ha->isp_ops.intr_handler = qla2300_intr_handler;
1447                 ha->isp_ops.fw_dump = qla2300_fw_dump;
1448                 ha->isp_ops.beacon_on = qla2x00_beacon_on;
1449                 ha->isp_ops.beacon_off = qla2x00_beacon_off;
1450                 ha->isp_ops.beacon_blink = qla2x00_beacon_blink;
1451                 ha->gid_list_info_size = 6;
1452                 if (IS_QLA2322(ha) || IS_QLA6322(ha))
1453                         ha->optrom_size = OPTROM_SIZE_2322;
1454         } else if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
1455                 host->max_id = MAX_TARGETS_2200;
1456                 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1457                 ha->request_q_length = REQUEST_ENTRY_CNT_24XX;
1458                 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1459                 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1460                 ha->init_cb_size = sizeof(struct init_cb_24xx);
1461                 ha->mgmt_svr_loop_id = 10;
1462                 ha->isp_ops.pci_config = qla24xx_pci_config;
1463                 ha->isp_ops.reset_chip = qla24xx_reset_chip;
1464                 ha->isp_ops.chip_diag = qla24xx_chip_diag;
1465                 ha->isp_ops.config_rings = qla24xx_config_rings;
1466                 ha->isp_ops.reset_adapter = qla24xx_reset_adapter;
1467                 ha->isp_ops.nvram_config = qla24xx_nvram_config;
1468                 ha->isp_ops.update_fw_options = qla24xx_update_fw_options;
1469                 ha->isp_ops.load_risc = qla24xx_load_risc;
1470                 ha->isp_ops.pci_info_str = qla24xx_pci_info_str;
1471                 ha->isp_ops.fw_version_str = qla24xx_fw_version_str;
1472                 ha->isp_ops.intr_handler = qla24xx_intr_handler;
1473                 ha->isp_ops.enable_intrs = qla24xx_enable_intrs;
1474                 ha->isp_ops.disable_intrs = qla24xx_disable_intrs;
1475                 ha->isp_ops.abort_command = qla24xx_abort_command;
1476                 ha->isp_ops.abort_target = qla24xx_abort_target;
1477                 ha->isp_ops.fabric_login = qla24xx_login_fabric;
1478                 ha->isp_ops.fabric_logout = qla24xx_fabric_logout;
1479                 ha->isp_ops.prep_ms_iocb = qla24xx_prep_ms_iocb;
1480                 ha->isp_ops.prep_ms_fdmi_iocb = qla24xx_prep_ms_fdmi_iocb;
1481                 ha->isp_ops.read_nvram = qla24xx_read_nvram_data;
1482                 ha->isp_ops.write_nvram = qla24xx_write_nvram_data;
1483                 ha->isp_ops.fw_dump = qla24xx_fw_dump;
1484                 ha->isp_ops.read_optrom = qla24xx_read_optrom_data;
1485                 ha->isp_ops.write_optrom = qla24xx_write_optrom_data;
1486                 ha->isp_ops.beacon_on = qla24xx_beacon_on;
1487                 ha->isp_ops.beacon_off = qla24xx_beacon_off;
1488                 ha->isp_ops.beacon_blink = qla24xx_beacon_blink;
1489                 ha->gid_list_info_size = 8;
1490                 ha->optrom_size = OPTROM_SIZE_24XX;
1491         }
1492         host->can_queue = ha->request_q_length + 128;
1493
1494         /* load the F/W, read paramaters, and init the H/W */
1495         ha->instance = num_hosts;
1496
1497         init_MUTEX(&ha->mbx_cmd_sem);
1498         init_MUTEX_LOCKED(&ha->mbx_intr_sem);
1499
1500         INIT_LIST_HEAD(&ha->list);
1501         INIT_LIST_HEAD(&ha->fcports);
1502
1503         /*
1504          * These locks are used to prevent more than one CPU
1505          * from modifying the queue at the same time. The
1506          * higher level "host_lock" will reduce most
1507          * contention for these locks.
1508          */
1509         spin_lock_init(&ha->mbx_reg_lock);
1510
1511         qla2x00_config_dma_addressing(ha);
1512         if (qla2x00_mem_alloc(ha)) {
1513                 qla_printk(KERN_WARNING, ha,
1514                     "[ERROR] Failed to allocate memory for adapter\n");
1515
1516                 ret = -ENOMEM;
1517                 goto probe_failed;
1518         }
1519
1520         if (qla2x00_initialize_adapter(ha) &&
1521             !(ha->device_flags & DFLG_NO_CABLE)) {
1522
1523                 qla_printk(KERN_WARNING, ha,
1524                     "Failed to initialize adapter\n");
1525
1526                 DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
1527                     "Adapter flags %x.\n",
1528                     ha->host_no, ha->device_flags));
1529
1530                 ret = -ENODEV;
1531                 goto probe_failed;
1532         }
1533
1534         /*
1535          * Startup the kernel thread for this host adapter
1536          */
1537         ha->dpc_thread = kthread_create(qla2x00_do_dpc, ha,
1538                         "%s_dpc", ha->host_str);
1539         if (IS_ERR(ha->dpc_thread)) {
1540                 qla_printk(KERN_WARNING, ha,
1541                     "Unable to start DPC thread!\n");
1542                 ret = PTR_ERR(ha->dpc_thread);
1543                 goto probe_failed;
1544         }
1545
1546         host->this_id = 255;
1547         host->cmd_per_lun = 3;
1548         host->unique_id = ha->instance;
1549         host->max_cmd_len = MAX_CMDSZ;
1550         host->max_channel = MAX_BUSES - 1;
1551         host->max_lun = MAX_LUNS;
1552         host->transportt = qla2xxx_transport_template;
1553
1554         ret = request_irq(pdev->irq, ha->isp_ops.intr_handler,
1555             IRQF_DISABLED|IRQF_SHARED, QLA2XXX_DRIVER_NAME, ha);
1556         if (ret) {
1557                 qla_printk(KERN_WARNING, ha,
1558                     "Failed to reserve interrupt %d already in use.\n",
1559                     pdev->irq);
1560                 goto probe_failed;
1561         }
1562         host->irq = pdev->irq;
1563
1564         /* Initialized the timer */
1565         qla2x00_start_timer(ha, qla2x00_timer, WATCH_INTERVAL);
1566
1567         DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
1568             ha->host_no, ha));
1569
1570         ha->isp_ops.disable_intrs(ha);
1571
1572         spin_lock_irqsave(&ha->hardware_lock, flags);
1573         reg = ha->iobase;
1574         if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
1575                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
1576                 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
1577         } else {
1578                 WRT_REG_WORD(&reg->isp.semaphore, 0);
1579                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
1580                 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
1581
1582                 /* Enable proper parity */
1583                 if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) {
1584                         if (IS_QLA2300(ha))
1585                                 /* SRAM parity */
1586                                 WRT_REG_WORD(&reg->isp.hccr,
1587                                     (HCCR_ENABLE_PARITY + 0x1));
1588                         else
1589                                 /* SRAM, Instruction RAM and GP RAM parity */
1590                                 WRT_REG_WORD(&reg->isp.hccr,
1591                                     (HCCR_ENABLE_PARITY + 0x7));
1592                 }
1593         }
1594         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1595
1596         ha->isp_ops.enable_intrs(ha);
1597
1598         /* v2.19.5b6 */
1599         /*
1600          * Wait around max loop_reset_delay secs for the devices to come
1601          * on-line. We don't want Linux scanning before we are ready.
1602          *
1603          */
1604         for (wait_switch = jiffies + (ha->loop_reset_delay * HZ);
1605             time_before(jiffies,wait_switch) &&
1606              !(ha->device_flags & (DFLG_NO_CABLE | DFLG_FABRIC_DEVICES))
1607              && (ha->device_flags & SWITCH_FOUND) ;) {
1608
1609                 qla2x00_check_fabric_devices(ha);
1610
1611                 msleep(10);
1612         }
1613
1614         pci_set_drvdata(pdev, ha);
1615         ha->flags.init_done = 1;
1616         num_hosts++;
1617
1618         ret = scsi_add_host(host, &pdev->dev);
1619         if (ret)
1620                 goto probe_failed;
1621
1622         qla2x00_alloc_sysfs_attr(ha);
1623
1624         qla2x00_init_host_attr(ha);
1625
1626         qla_printk(KERN_INFO, ha, "\n"
1627             " QLogic Fibre Channel HBA Driver: %s\n"
1628             "  QLogic %s - %s\n"
1629             "  ISP%04X: %s @ %s hdma%c, host#=%ld, fw=%s\n",
1630             qla2x00_version_str, ha->model_number,
1631             ha->model_desc ? ha->model_desc: "", pdev->device,
1632             ha->isp_ops.pci_info_str(ha, pci_info), pci_name(pdev),
1633             ha->flags.enable_64bit_addressing ? '+': '-', ha->host_no,
1634             ha->isp_ops.fw_version_str(ha, fw_str));
1635
1636         /* Go with fc_rport registration. */
1637         list_for_each_entry(fcport, &ha->fcports, list)
1638                 qla2x00_reg_remote_port(ha, fcport);
1639
1640         return 0;
1641
1642 probe_failed:
1643         qla2x00_free_device(ha);
1644
1645         scsi_host_put(host);
1646
1647 probe_disable_device:
1648         pci_disable_device(pdev);
1649
1650 probe_out:
1651         return ret;
1652 }
1653
1654 static void __devexit
1655 qla2x00_remove_one(struct pci_dev *pdev)
1656 {
1657         scsi_qla_host_t *ha;
1658
1659         ha = pci_get_drvdata(pdev);
1660
1661         qla2x00_free_sysfs_attr(ha);
1662
1663         fc_remove_host(ha->host);
1664
1665         scsi_remove_host(ha->host);
1666
1667         qla2x00_free_device(ha);
1668
1669         scsi_host_put(ha->host);
1670
1671         pci_set_drvdata(pdev, NULL);
1672 }
1673
1674 static void
1675 qla2x00_free_device(scsi_qla_host_t *ha)
1676 {
1677         /* Disable timer */
1678         if (ha->timer_active)
1679                 qla2x00_stop_timer(ha);
1680
1681         /* Kill the kernel thread for this host */
1682         if (ha->dpc_thread) {
1683                 struct task_struct *t = ha->dpc_thread;
1684
1685                 /*
1686                  * qla2xxx_wake_dpc checks for ->dpc_thread
1687                  * so we need to zero it out.
1688                  */
1689                 ha->dpc_thread = NULL;
1690                 kthread_stop(t);
1691         }
1692
1693         if (ha->eft)
1694                 qla2x00_trace_control(ha, TC_DISABLE, 0, 0);
1695
1696         /* Stop currently executing firmware. */
1697         qla2x00_stop_firmware(ha);
1698
1699         /* turn-off interrupts on the card */
1700         if (ha->interrupts_on)
1701                 ha->isp_ops.disable_intrs(ha);
1702
1703         qla2x00_mem_free(ha);
1704
1705         ha->flags.online = 0;
1706
1707         /* Detach interrupts */
1708         if (ha->host->irq)
1709                 free_irq(ha->host->irq, ha);
1710
1711         /* release io space registers  */
1712         if (ha->iobase)
1713                 iounmap(ha->iobase);
1714         pci_release_regions(ha->pdev);
1715
1716         pci_disable_device(ha->pdev);
1717 }
1718
1719 static inline void
1720 qla2x00_schedule_rport_del(struct scsi_qla_host *ha, fc_port_t *fcport,
1721     int defer)
1722 {
1723         unsigned long flags;
1724         struct fc_rport *rport;
1725
1726         if (!fcport->rport)
1727                 return;
1728
1729         rport = fcport->rport;
1730         if (defer) {
1731                 spin_lock_irqsave(&fcport->rport_lock, flags);
1732                 fcport->drport = rport;
1733                 fcport->rport = NULL;
1734                 *(fc_port_t **)rport->dd_data = NULL;
1735                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1736                 set_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags);
1737         } else {
1738                 spin_lock_irqsave(&fcport->rport_lock, flags);
1739                 fcport->rport = NULL;
1740                 *(fc_port_t **)rport->dd_data = NULL;
1741                 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1742                 fc_remote_port_delete(rport);
1743         }
1744 }
1745
1746 /*
1747  * qla2x00_mark_device_lost Updates fcport state when device goes offline.
1748  *
1749  * Input: ha = adapter block pointer.  fcport = port structure pointer.
1750  *
1751  * Return: None.
1752  *
1753  * Context:
1754  */
1755 void qla2x00_mark_device_lost(scsi_qla_host_t *ha, fc_port_t *fcport,
1756     int do_login, int defer)
1757 {
1758         if (atomic_read(&fcport->state) == FCS_ONLINE)
1759                 qla2x00_schedule_rport_del(ha, fcport, defer);
1760
1761         /*
1762          * We may need to retry the login, so don't change the state of the
1763          * port but do the retries.
1764          */
1765         if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD)
1766                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1767
1768         if (!do_login)
1769                 return;
1770
1771         if (fcport->login_retry == 0) {
1772                 fcport->login_retry = ha->login_retry_count;
1773                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
1774
1775                 DEBUG(printk("scsi(%ld): Port login retry: "
1776                     "%02x%02x%02x%02x%02x%02x%02x%02x, "
1777                     "id = 0x%04x retry cnt=%d\n",
1778                     ha->host_no,
1779                     fcport->port_name[0],
1780                     fcport->port_name[1],
1781                     fcport->port_name[2],
1782                     fcport->port_name[3],
1783                     fcport->port_name[4],
1784                     fcport->port_name[5],
1785                     fcport->port_name[6],
1786                     fcport->port_name[7],
1787                     fcport->loop_id,
1788                     fcport->login_retry));
1789         }
1790 }
1791
1792 /*
1793  * qla2x00_mark_all_devices_lost
1794  *      Updates fcport state when device goes offline.
1795  *
1796  * Input:
1797  *      ha = adapter block pointer.
1798  *      fcport = port structure pointer.
1799  *
1800  * Return:
1801  *      None.
1802  *
1803  * Context:
1804  */
1805 void
1806 qla2x00_mark_all_devices_lost(scsi_qla_host_t *ha, int defer)
1807 {
1808         fc_port_t *fcport;
1809
1810         list_for_each_entry(fcport, &ha->fcports, list) {
1811                 if (fcport->port_type != FCT_TARGET)
1812                         continue;
1813
1814                 /*
1815                  * No point in marking the device as lost, if the device is
1816                  * already DEAD.
1817                  */
1818                 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
1819                         continue;
1820                 if (atomic_read(&fcport->state) == FCS_ONLINE)
1821                         qla2x00_schedule_rport_del(ha, fcport, defer);
1822                 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1823         }
1824
1825         if (defer)
1826                 qla2xxx_wake_dpc(ha);
1827 }
1828
1829 /*
1830 * qla2x00_mem_alloc
1831 *      Allocates adapter memory.
1832 *
1833 * Returns:
1834 *      0  = success.
1835 *      1  = failure.
1836 */
1837 static uint8_t
1838 qla2x00_mem_alloc(scsi_qla_host_t *ha)
1839 {
1840         char    name[16];
1841         uint8_t   status = 1;
1842         int     retry= 10;
1843
1844         do {
1845                 /*
1846                  * This will loop only once if everything goes well, else some
1847                  * number of retries will be performed to get around a kernel
1848                  * bug where available mem is not allocated until after a
1849                  * little delay and a retry.
1850                  */
1851                 ha->request_ring = dma_alloc_coherent(&ha->pdev->dev,
1852                     (ha->request_q_length + 1) * sizeof(request_t),
1853                     &ha->request_dma, GFP_KERNEL);
1854                 if (ha->request_ring == NULL) {
1855                         qla_printk(KERN_WARNING, ha,
1856                             "Memory Allocation failed - request_ring\n");
1857
1858                         qla2x00_mem_free(ha);
1859                         msleep(100);
1860
1861                         continue;
1862                 }
1863
1864                 ha->response_ring = dma_alloc_coherent(&ha->pdev->dev,
1865                     (ha->response_q_length + 1) * sizeof(response_t),
1866                     &ha->response_dma, GFP_KERNEL);
1867                 if (ha->response_ring == NULL) {
1868                         qla_printk(KERN_WARNING, ha,
1869                             "Memory Allocation failed - response_ring\n");
1870
1871                         qla2x00_mem_free(ha);
1872                         msleep(100);
1873
1874                         continue;
1875                 }
1876
1877                 ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
1878                     &ha->gid_list_dma, GFP_KERNEL);
1879                 if (ha->gid_list == NULL) {
1880                         qla_printk(KERN_WARNING, ha,
1881                             "Memory Allocation failed - gid_list\n");
1882
1883                         qla2x00_mem_free(ha);
1884                         msleep(100);
1885
1886                         continue;
1887                 }
1888
1889                 snprintf(name, sizeof(name), "%s_%ld", QLA2XXX_DRIVER_NAME,
1890                     ha->host_no);
1891                 ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
1892                     DMA_POOL_SIZE, 8, 0);
1893                 if (ha->s_dma_pool == NULL) {
1894                         qla_printk(KERN_WARNING, ha,
1895                             "Memory Allocation failed - s_dma_pool\n");
1896
1897                         qla2x00_mem_free(ha);
1898                         msleep(100);
1899
1900                         continue;
1901                 }
1902
1903                 /* get consistent memory allocated for init control block */
1904                 ha->init_cb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1905                     &ha->init_cb_dma);
1906                 if (ha->init_cb == NULL) {
1907                         qla_printk(KERN_WARNING, ha,
1908                             "Memory Allocation failed - init_cb\n");
1909
1910                         qla2x00_mem_free(ha);
1911                         msleep(100);
1912
1913                         continue;
1914                 }
1915                 memset(ha->init_cb, 0, ha->init_cb_size);
1916
1917                 if (qla2x00_allocate_sp_pool(ha)) {
1918                         qla_printk(KERN_WARNING, ha,
1919                             "Memory Allocation failed - "
1920                             "qla2x00_allocate_sp_pool()\n");
1921
1922                         qla2x00_mem_free(ha);
1923                         msleep(100);
1924
1925                         continue;
1926                 }
1927
1928                 /* Allocate memory for SNS commands */
1929                 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
1930                         /* Get consistent memory allocated for SNS commands */
1931                         ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev,
1932                             sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma,
1933                             GFP_KERNEL);
1934                         if (ha->sns_cmd == NULL) {
1935                                 /* error */
1936                                 qla_printk(KERN_WARNING, ha,
1937                                     "Memory Allocation failed - sns_cmd\n");
1938
1939                                 qla2x00_mem_free(ha);
1940                                 msleep(100);
1941
1942                                 continue;
1943                         }
1944                         memset(ha->sns_cmd, 0, sizeof(struct sns_cmd_pkt));
1945                 } else {
1946                         /* Get consistent memory allocated for MS IOCB */
1947                         ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1948                             &ha->ms_iocb_dma);
1949                         if (ha->ms_iocb == NULL) {
1950                                 /* error */
1951                                 qla_printk(KERN_WARNING, ha,
1952                                     "Memory Allocation failed - ms_iocb\n");
1953
1954                                 qla2x00_mem_free(ha);
1955                                 msleep(100);
1956
1957                                 continue;
1958                         }
1959                         memset(ha->ms_iocb, 0, sizeof(ms_iocb_entry_t));
1960
1961                         /*
1962                          * Get consistent memory allocated for CT SNS
1963                          * commands
1964                          */
1965                         ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev,
1966                             sizeof(struct ct_sns_pkt), &ha->ct_sns_dma,
1967                             GFP_KERNEL);
1968                         if (ha->ct_sns == NULL) {
1969                                 /* error */
1970                                 qla_printk(KERN_WARNING, ha,
1971                                     "Memory Allocation failed - ct_sns\n");
1972
1973                                 qla2x00_mem_free(ha);
1974                                 msleep(100);
1975
1976                                 continue;
1977                         }
1978                         memset(ha->ct_sns, 0, sizeof(struct ct_sns_pkt));
1979
1980                         if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
1981                                 /*
1982                                  * Get consistent memory allocated for SFP
1983                                  * block.
1984                                  */
1985                                 ha->sfp_data = dma_pool_alloc(ha->s_dma_pool,
1986                                     GFP_KERNEL, &ha->sfp_data_dma);
1987                                 if (ha->sfp_data == NULL) {
1988                                         qla_printk(KERN_WARNING, ha,
1989                                             "Memory Allocation failed - "
1990                                             "sfp_data\n");
1991
1992                                         qla2x00_mem_free(ha);
1993                                         msleep(100);
1994
1995                                         continue;
1996                                 }
1997                                 memset(ha->sfp_data, 0, SFP_BLOCK_SIZE);
1998                         }
1999                 }
2000
2001                 /* Done all allocations without any error. */
2002                 status = 0;
2003
2004         } while (retry-- && status != 0);
2005
2006         if (status) {
2007                 printk(KERN_WARNING
2008                         "%s(): **** FAILED ****\n", __func__);
2009         }
2010
2011         return(status);
2012 }
2013
2014 /*
2015 * qla2x00_mem_free
2016 *      Frees all adapter allocated memory.
2017 *
2018 * Input:
2019 *      ha = adapter block pointer.
2020 */
2021 static void
2022 qla2x00_mem_free(scsi_qla_host_t *ha)
2023 {
2024         struct list_head        *fcpl, *fcptemp;
2025         fc_port_t       *fcport;
2026
2027         if (ha == NULL) {
2028                 /* error */
2029                 DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__));
2030                 return;
2031         }
2032
2033         /* free sp pool */
2034         qla2x00_free_sp_pool(ha);
2035
2036         if (ha->fw_dump) {
2037                 if (ha->eft)
2038                         dma_free_coherent(&ha->pdev->dev,
2039                             ntohl(ha->fw_dump->eft_size), ha->eft, ha->eft_dma);
2040                 vfree(ha->fw_dump);
2041         }
2042
2043         if (ha->sns_cmd)
2044                 dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
2045                     ha->sns_cmd, ha->sns_cmd_dma);
2046
2047         if (ha->ct_sns)
2048                 dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
2049                     ha->ct_sns, ha->ct_sns_dma);
2050
2051         if (ha->sfp_data)
2052                 dma_pool_free(ha->s_dma_pool, ha->sfp_data, ha->sfp_data_dma);
2053
2054         if (ha->ms_iocb)
2055                 dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
2056
2057         if (ha->init_cb)
2058                 dma_pool_free(ha->s_dma_pool, ha->init_cb, ha->init_cb_dma);
2059
2060         if (ha->s_dma_pool)
2061                 dma_pool_destroy(ha->s_dma_pool);
2062
2063         if (ha->gid_list)
2064                 dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
2065                     ha->gid_list_dma);
2066
2067         if (ha->response_ring)
2068                 dma_free_coherent(&ha->pdev->dev,
2069                     (ha->response_q_length + 1) * sizeof(response_t),
2070                     ha->response_ring, ha->response_dma);
2071
2072         if (ha->request_ring)
2073                 dma_free_coherent(&ha->pdev->dev,
2074                     (ha->request_q_length + 1) * sizeof(request_t),
2075                     ha->request_ring, ha->request_dma);
2076
2077         ha->eft = NULL;
2078         ha->eft_dma = 0;
2079         ha->sns_cmd = NULL;
2080         ha->sns_cmd_dma = 0;
2081         ha->ct_sns = NULL;
2082         ha->ct_sns_dma = 0;
2083         ha->ms_iocb = NULL;
2084         ha->ms_iocb_dma = 0;
2085         ha->init_cb = NULL;
2086         ha->init_cb_dma = 0;
2087
2088         ha->s_dma_pool = NULL;
2089
2090         ha->gid_list = NULL;
2091         ha->gid_list_dma = 0;
2092
2093         ha->response_ring = NULL;
2094         ha->response_dma = 0;
2095         ha->request_ring = NULL;
2096         ha->request_dma = 0;
2097
2098         list_for_each_safe(fcpl, fcptemp, &ha->fcports) {
2099                 fcport = list_entry(fcpl, fc_port_t, list);
2100
2101                 /* fc ports */
2102                 list_del_init(&fcport->list);
2103                 kfree(fcport);
2104         }
2105         INIT_LIST_HEAD(&ha->fcports);
2106
2107         ha->fw_dump = NULL;
2108         ha->fw_dumped = 0;
2109         ha->fw_dump_reading = 0;
2110
2111         vfree(ha->optrom_buffer);
2112 }
2113
2114 /*
2115  * qla2x00_allocate_sp_pool
2116  *       This routine is called during initialization to allocate
2117  *       memory for local srb_t.
2118  *
2119  * Input:
2120  *       ha   = adapter block pointer.
2121  *
2122  * Context:
2123  *      Kernel context.
2124  */
2125 static int
2126 qla2x00_allocate_sp_pool(scsi_qla_host_t *ha)
2127 {
2128         int      rval;
2129
2130         rval = QLA_SUCCESS;
2131         ha->srb_mempool = mempool_create_slab_pool(SRB_MIN_REQ, srb_cachep);
2132         if (ha->srb_mempool == NULL) {
2133                 qla_printk(KERN_INFO, ha, "Unable to allocate SRB mempool.\n");
2134                 rval = QLA_FUNCTION_FAILED;
2135         }
2136         return (rval);
2137 }
2138
2139 /*
2140  *  This routine frees all adapter allocated memory.
2141  *
2142  */
2143 static void
2144 qla2x00_free_sp_pool( scsi_qla_host_t *ha)
2145 {
2146         if (ha->srb_mempool) {
2147                 mempool_destroy(ha->srb_mempool);
2148                 ha->srb_mempool = NULL;
2149         }
2150 }
2151
2152 /**************************************************************************
2153 * qla2x00_do_dpc
2154 *   This kernel thread is a task that is schedule by the interrupt handler
2155 *   to perform the background processing for interrupts.
2156 *
2157 * Notes:
2158 * This task always run in the context of a kernel thread.  It
2159 * is kick-off by the driver's detect code and starts up
2160 * up one per adapter. It immediately goes to sleep and waits for
2161 * some fibre event.  When either the interrupt handler or
2162 * the timer routine detects a event it will one of the task
2163 * bits then wake us up.
2164 **************************************************************************/
2165 static int
2166 qla2x00_do_dpc(void *data)
2167 {
2168         scsi_qla_host_t *ha;
2169         fc_port_t       *fcport;
2170         uint8_t         status;
2171         uint16_t        next_loopid;
2172
2173         ha = (scsi_qla_host_t *)data;
2174
2175         set_user_nice(current, -20);
2176
2177         while (!kthread_should_stop()) {
2178                 DEBUG3(printk("qla2x00: DPC handler sleeping\n"));
2179
2180                 set_current_state(TASK_INTERRUPTIBLE);
2181                 schedule();
2182                 __set_current_state(TASK_RUNNING);
2183
2184                 DEBUG3(printk("qla2x00: DPC handler waking up\n"));
2185
2186                 /* Initialization not yet finished. Don't do anything yet. */
2187                 if (!ha->flags.init_done)
2188                         continue;
2189
2190                 DEBUG3(printk("scsi(%ld): DPC handler\n", ha->host_no));
2191
2192                 ha->dpc_active = 1;
2193
2194                 if (ha->flags.mbox_busy) {
2195                         ha->dpc_active = 0;
2196                         continue;
2197                 }
2198
2199                 if (test_and_clear_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) {
2200
2201                         DEBUG(printk("scsi(%ld): dpc: sched "
2202                             "qla2x00_abort_isp ha = %p\n",
2203                             ha->host_no, ha));
2204                         if (!(test_and_set_bit(ABORT_ISP_ACTIVE,
2205                             &ha->dpc_flags))) {
2206
2207                                 if (qla2x00_abort_isp(ha)) {
2208                                         /* failed. retry later */
2209                                         set_bit(ISP_ABORT_NEEDED,
2210                                             &ha->dpc_flags);
2211                                 }
2212                                 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
2213                         }
2214                         DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
2215                             ha->host_no));
2216                 }
2217
2218                 if (test_and_clear_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags))
2219                         qla2x00_update_fcports(ha);
2220
2221                 if (test_and_clear_bit(LOOP_RESET_NEEDED, &ha->dpc_flags)) {
2222                         DEBUG(printk("scsi(%ld): dpc: sched loop_reset()\n",
2223                             ha->host_no));
2224                         qla2x00_loop_reset(ha);
2225                 }
2226
2227                 if (test_and_clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) &&
2228                     (!(test_and_set_bit(RESET_ACTIVE, &ha->dpc_flags)))) {
2229
2230                         DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
2231                             ha->host_no));
2232
2233                         qla2x00_rst_aen(ha);
2234                         clear_bit(RESET_ACTIVE, &ha->dpc_flags);
2235                 }
2236
2237                 /* Retry each device up to login retry count */
2238                 if ((test_and_clear_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2239                     !test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) &&
2240                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2241
2242                         DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
2243                             ha->host_no));
2244
2245                         next_loopid = 0;
2246                         list_for_each_entry(fcport, &ha->fcports, list) {
2247                                 if (fcport->port_type != FCT_TARGET)
2248                                         continue;
2249
2250                                 /*
2251                                  * If the port is not ONLINE then try to login
2252                                  * to it if we haven't run out of retries.
2253                                  */
2254                                 if (atomic_read(&fcport->state) != FCS_ONLINE &&
2255                                     fcport->login_retry) {
2256
2257                                         fcport->login_retry--;
2258                                         if (fcport->flags & FCF_FABRIC_DEVICE) {
2259                                                 if (fcport->flags &
2260                                                     FCF_TAPE_PRESENT)
2261                                                         ha->isp_ops.fabric_logout(
2262                                                             ha, fcport->loop_id,
2263                                                             fcport->d_id.b.domain,
2264                                                             fcport->d_id.b.area,
2265                                                             fcport->d_id.b.al_pa);
2266                                                 status = qla2x00_fabric_login(
2267                                                     ha, fcport, &next_loopid);
2268                                         } else
2269                                                 status =
2270                                                     qla2x00_local_device_login(
2271                                                         ha, fcport);
2272
2273                                         if (status == QLA_SUCCESS) {
2274                                                 fcport->old_loop_id = fcport->loop_id;
2275
2276                                                 DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n",
2277                                                     ha->host_no, fcport->loop_id));
2278
2279                                                 qla2x00_update_fcport(ha,
2280                                                     fcport);
2281                                         } else if (status == 1) {
2282                                                 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
2283                                                 /* retry the login again */
2284                                                 DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n",
2285                                                     ha->host_no,
2286                                                     fcport->login_retry, fcport->loop_id));
2287                                         } else {
2288                                                 fcport->login_retry = 0;
2289                                         }
2290                                 }
2291                                 if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
2292                                         break;
2293                         }
2294                         DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
2295                             ha->host_no));
2296                 }
2297
2298                 if ((test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags)) &&
2299                     atomic_read(&ha->loop_state) != LOOP_DOWN) {
2300
2301                         clear_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags);
2302                         DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n",
2303                             ha->host_no));
2304
2305                         set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
2306
2307                         DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n",
2308                             ha->host_no));
2309                 }
2310
2311                 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
2312
2313                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
2314                             ha->host_no));
2315
2316                         if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE,
2317                             &ha->dpc_flags))) {
2318
2319                                 qla2x00_loop_resync(ha);
2320
2321                                 clear_bit(LOOP_RESYNC_ACTIVE, &ha->dpc_flags);
2322                         }
2323
2324                         DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
2325                             ha->host_no));
2326                 }
2327
2328                 if (test_and_clear_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags)) {
2329
2330                         DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n",
2331                             ha->host_no));
2332
2333                         qla2x00_rescan_fcports(ha);
2334
2335                         DEBUG(printk("scsi(%ld): Rescan flagged fcports..."
2336                             "end.\n",
2337                             ha->host_no));
2338                 }
2339
2340                 if (!ha->interrupts_on)
2341                         ha->isp_ops.enable_intrs(ha);
2342
2343                 if (test_and_clear_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags))
2344                         ha->isp_ops.beacon_blink(ha);
2345
2346                 ha->dpc_active = 0;
2347         } /* End of while(1) */
2348
2349         DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha->host_no));
2350
2351         /*
2352          * Make sure that nobody tries to wake us up again.
2353          */
2354         ha->dpc_active = 0;
2355
2356         return 0;
2357 }
2358
2359 void
2360 qla2xxx_wake_dpc(scsi_qla_host_t *ha)
2361 {
2362         if (ha->dpc_thread)
2363                 wake_up_process(ha->dpc_thread);
2364 }
2365
2366 /*
2367 *  qla2x00_rst_aen
2368 *      Processes asynchronous reset.
2369 *
2370 * Input:
2371 *      ha  = adapter block pointer.
2372 */
2373 static void
2374 qla2x00_rst_aen(scsi_qla_host_t *ha)
2375 {
2376         if (ha->flags.online && !ha->flags.reset_active &&
2377             !atomic_read(&ha->loop_down_timer) &&
2378             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
2379                 do {
2380                         clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
2381
2382                         /*
2383                          * Issue marker command only when we are going to start
2384                          * the I/O.
2385                          */
2386                         ha->marker_needed = 1;
2387                 } while (!atomic_read(&ha->loop_down_timer) &&
2388                     (test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags)));
2389         }
2390 }
2391
2392 static void
2393 qla2x00_sp_free_dma(scsi_qla_host_t *ha, srb_t *sp)
2394 {
2395         struct scsi_cmnd *cmd = sp->cmd;
2396
2397         if (sp->flags & SRB_DMA_VALID) {
2398                 if (cmd->use_sg) {
2399                         dma_unmap_sg(&ha->pdev->dev, cmd->request_buffer,
2400                             cmd->use_sg, cmd->sc_data_direction);
2401                 } else if (cmd->request_bufflen) {
2402                         dma_unmap_single(&ha->pdev->dev, sp->dma_handle,
2403                             cmd->request_bufflen, cmd->sc_data_direction);
2404                 }
2405                 sp->flags &= ~SRB_DMA_VALID;
2406         }
2407         CMD_SP(cmd) = NULL;
2408 }
2409
2410 void
2411 qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *sp)
2412 {
2413         struct scsi_cmnd *cmd = sp->cmd;
2414
2415         qla2x00_sp_free_dma(ha, sp);
2416
2417         mempool_free(sp, ha->srb_mempool);
2418
2419         cmd->scsi_done(cmd);
2420 }
2421
2422 /**************************************************************************
2423 *   qla2x00_timer
2424 *
2425 * Description:
2426 *   One second timer
2427 *
2428 * Context: Interrupt
2429 ***************************************************************************/
2430 static void
2431 qla2x00_timer(scsi_qla_host_t *ha)
2432 {
2433         unsigned long   cpu_flags = 0;
2434         fc_port_t       *fcport;
2435         int             start_dpc = 0;
2436         int             index;
2437         srb_t           *sp;
2438         int             t;
2439
2440         /*
2441          * Ports - Port down timer.
2442          *
2443          * Whenever, a port is in the LOST state we start decrementing its port
2444          * down timer every second until it reaches zero. Once  it reaches zero
2445          * the port it marked DEAD.
2446          */
2447         t = 0;
2448         list_for_each_entry(fcport, &ha->fcports, list) {
2449                 if (fcport->port_type != FCT_TARGET)
2450                         continue;
2451
2452                 if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) {
2453
2454                         if (atomic_read(&fcport->port_down_timer) == 0)
2455                                 continue;
2456
2457                         if (atomic_dec_and_test(&fcport->port_down_timer) != 0)
2458                                 atomic_set(&fcport->state, FCS_DEVICE_DEAD);
2459
2460                         DEBUG(printk("scsi(%ld): fcport-%d - port retry count: "
2461                             "%d remaining\n",
2462                             ha->host_no,
2463                             t, atomic_read(&fcport->port_down_timer)));
2464                 }
2465                 t++;
2466         } /* End of for fcport  */
2467
2468
2469         /* Loop down handler. */
2470         if (atomic_read(&ha->loop_down_timer) > 0 &&
2471             !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)) && ha->flags.online) {
2472
2473                 if (atomic_read(&ha->loop_down_timer) ==
2474                     ha->loop_down_abort_time) {
2475
2476                         DEBUG(printk("scsi(%ld): Loop Down - aborting the "
2477                             "queues before time expire\n",
2478                             ha->host_no));
2479
2480                         if (!IS_QLA2100(ha) && ha->link_down_timeout)
2481                                 atomic_set(&ha->loop_state, LOOP_DEAD);
2482
2483                         /* Schedule an ISP abort to return any tape commands. */
2484                         spin_lock_irqsave(&ha->hardware_lock, cpu_flags);
2485                         for (index = 1; index < MAX_OUTSTANDING_COMMANDS;
2486                             index++) {
2487                                 fc_port_t *sfcp;
2488
2489                                 sp = ha->outstanding_cmds[index];
2490                                 if (!sp)
2491                                         continue;
2492                                 sfcp = sp->fcport;
2493                                 if (!(sfcp->flags & FCF_TAPE_PRESENT))
2494                                         continue;
2495
2496                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2497                                 break;
2498                         }
2499                         spin_unlock_irqrestore(&ha->hardware_lock, cpu_flags);
2500
2501                         set_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags);
2502                         start_dpc++;
2503                 }
2504
2505                 /* if the loop has been down for 4 minutes, reinit adapter */
2506                 if (atomic_dec_and_test(&ha->loop_down_timer) != 0) {
2507                         DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - "
2508                             "restarting queues.\n",
2509                             ha->host_no));
2510
2511                         set_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags);
2512                         start_dpc++;
2513
2514                         if (!(ha->device_flags & DFLG_NO_CABLE)) {
2515                                 DEBUG(printk("scsi(%ld): Loop down - "
2516                                     "aborting ISP.\n",
2517                                     ha->host_no));
2518                                 qla_printk(KERN_WARNING, ha,
2519                                     "Loop down - aborting ISP.\n");
2520
2521                                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2522                         }
2523                 }
2524                 DEBUG3(printk("scsi(%ld): Loop Down - seconds remaining %d\n",
2525                     ha->host_no,
2526                     atomic_read(&ha->loop_down_timer)));
2527         }
2528
2529         /* Check if beacon LED needs to be blinked */
2530         if (ha->beacon_blink_led == 1) {
2531                 set_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags);
2532                 start_dpc++;
2533         }
2534
2535         /* Schedule the DPC routine if needed */
2536         if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) ||
2537             test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) ||
2538             test_bit(LOOP_RESET_NEEDED, &ha->dpc_flags) ||
2539             test_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags) ||
2540             start_dpc ||
2541             test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags) ||
2542             test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) ||
2543             test_bit(BEACON_BLINK_NEEDED, &ha->dpc_flags) ||
2544             test_bit(RELOGIN_NEEDED, &ha->dpc_flags)))
2545                 qla2xxx_wake_dpc(ha);
2546
2547         qla2x00_restart_timer(ha, WATCH_INTERVAL);
2548 }
2549
2550 /* XXX(hch): crude hack to emulate a down_timeout() */
2551 int
2552 qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout)
2553 {
2554         const unsigned int step = 100; /* msecs */
2555         unsigned int iterations = jiffies_to_msecs(timeout)/100;
2556
2557         do {
2558                 if (!down_trylock(sema))
2559                         return 0;
2560                 if (msleep_interruptible(step))
2561                         break;
2562         } while (--iterations >= 0);
2563
2564         return -ETIMEDOUT;
2565 }
2566
2567 /* Firmware interface routines. */
2568
2569 #define FW_BLOBS        5
2570 #define FW_ISP21XX      0
2571 #define FW_ISP22XX      1
2572 #define FW_ISP2300      2
2573 #define FW_ISP2322      3
2574 #define FW_ISP24XX      4
2575
2576 static DECLARE_MUTEX(qla_fw_lock);
2577
2578 static struct fw_blob qla_fw_blobs[FW_BLOBS] = {
2579         { .name = "ql2100_fw.bin", .segs = { 0x1000, 0 }, },
2580         { .name = "ql2200_fw.bin", .segs = { 0x1000, 0 }, },
2581         { .name = "ql2300_fw.bin", .segs = { 0x800, 0 }, },
2582         { .name = "ql2322_fw.bin", .segs = { 0x800, 0x1c000, 0x1e000, 0 }, },
2583         { .name = "ql2400_fw.bin", },
2584 };
2585
2586 struct fw_blob *
2587 qla2x00_request_firmware(scsi_qla_host_t *ha)
2588 {
2589         struct fw_blob *blob;
2590
2591         blob = NULL;
2592         if (IS_QLA2100(ha)) {
2593                 blob = &qla_fw_blobs[FW_ISP21XX];
2594         } else if (IS_QLA2200(ha)) {
2595                 blob = &qla_fw_blobs[FW_ISP22XX];
2596         } else if (IS_QLA2300(ha) || IS_QLA2312(ha) || IS_QLA6312(ha)) {
2597                 blob = &qla_fw_blobs[FW_ISP2300];
2598         } else if (IS_QLA2322(ha) || IS_QLA6322(ha)) {
2599                 blob = &qla_fw_blobs[FW_ISP2322];
2600         } else if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
2601                 blob = &qla_fw_blobs[FW_ISP24XX];
2602         }
2603
2604         down(&qla_fw_lock);
2605         if (blob->fw)
2606                 goto out;
2607
2608         if (request_firmware(&blob->fw, blob->name, &ha->pdev->dev)) {
2609                 DEBUG2(printk("scsi(%ld): Failed to load firmware image "
2610                     "(%s).\n", ha->host_no, blob->name));
2611                 blob->fw = NULL;
2612                 blob = NULL;
2613                 goto out;
2614         }
2615
2616 out:
2617         up(&qla_fw_lock);
2618         return blob;
2619 }
2620
2621 static void
2622 qla2x00_release_firmware(void)
2623 {
2624         int idx;
2625
2626         down(&qla_fw_lock);
2627         for (idx = 0; idx < FW_BLOBS; idx++)
2628                 if (qla_fw_blobs[idx].fw)
2629                         release_firmware(qla_fw_blobs[idx].fw);
2630         up(&qla_fw_lock);
2631 }
2632
2633 static struct pci_device_id qla2xxx_pci_tbl[] = {
2634         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2100) },
2635         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2200) },
2636         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2300) },
2637         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2312) },
2638         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2322) },
2639         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6312) },
2640         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6322) },
2641         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2422) },
2642         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2432) },
2643         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5422) },
2644         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5432) },
2645         { 0 },
2646 };
2647 MODULE_DEVICE_TABLE(pci, qla2xxx_pci_tbl);
2648
2649 static struct pci_driver qla2xxx_pci_driver = {
2650         .name           = QLA2XXX_DRIVER_NAME,
2651         .driver         = {
2652                 .owner          = THIS_MODULE,
2653         },
2654         .id_table       = qla2xxx_pci_tbl,
2655         .probe          = qla2x00_probe_one,
2656         .remove         = __devexit_p(qla2x00_remove_one),
2657 };
2658
2659 /**
2660  * qla2x00_module_init - Module initialization.
2661  **/
2662 static int __init
2663 qla2x00_module_init(void)
2664 {
2665         int ret = 0;
2666
2667         /* Allocate cache for SRBs. */
2668         srb_cachep = kmem_cache_create("qla2xxx_srbs", sizeof(srb_t), 0,
2669             SLAB_HWCACHE_ALIGN, NULL, NULL);
2670         if (srb_cachep == NULL) {
2671                 printk(KERN_ERR
2672                     "qla2xxx: Unable to allocate SRB cache...Failing load!\n");
2673                 return -ENOMEM;
2674         }
2675
2676         /* Derive version string. */
2677         strcpy(qla2x00_version_str, QLA2XXX_VERSION);
2678         if (extended_error_logging)
2679                 strcat(qla2x00_version_str, "-debug");
2680
2681         qla2xxx_transport_template =
2682             fc_attach_transport(&qla2xxx_transport_functions);
2683         if (!qla2xxx_transport_template)
2684                 return -ENODEV;
2685
2686         printk(KERN_INFO "QLogic Fibre Channel HBA Driver\n");
2687         ret = pci_register_driver(&qla2xxx_pci_driver);
2688         if (ret) {
2689                 kmem_cache_destroy(srb_cachep);
2690                 fc_release_transport(qla2xxx_transport_template);
2691         }
2692         return ret;
2693 }
2694
2695 /**
2696  * qla2x00_module_exit - Module cleanup.
2697  **/
2698 static void __exit
2699 qla2x00_module_exit(void)
2700 {
2701         pci_unregister_driver(&qla2xxx_pci_driver);
2702         qla2x00_release_firmware();
2703         kmem_cache_destroy(srb_cachep);
2704         fc_release_transport(qla2xxx_transport_template);
2705 }
2706
2707 module_init(qla2x00_module_init);
2708 module_exit(qla2x00_module_exit);
2709
2710 MODULE_AUTHOR("QLogic Corporation");
2711 MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
2712 MODULE_LICENSE("GPL");
2713 MODULE_VERSION(QLA2XXX_VERSION);