2 * QLOGIC LINUX SOFTWARE
4 * QLogic ISP2x00 device driver for Linux 2.6.x
5 * Copyright (C) 2003-2004 QLogic Corporation
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2, or (at your option) any
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
21 #include <linux/moduleparam.h>
22 #include <linux/vmalloc.h>
23 #include <linux/smp_lock.h>
24 #include <linux/delay.h>
26 #include <scsi/scsi_tcq.h>
27 #include <scsi/scsicam.h>
28 #include <scsi/scsi_transport.h>
29 #include <scsi/scsi_transport_fc.h>
34 char qla2x00_version_str[40];
37 * SRB allocation cache
39 static kmem_cache_t *srb_cachep;
42 * Ioctl related information.
46 int ql2xlogintimeout = 20;
47 module_param(ql2xlogintimeout, int, S_IRUGO|S_IRUSR);
48 MODULE_PARM_DESC(ql2xlogintimeout,
49 "Login timeout value in seconds.");
51 int qlport_down_retry = 30;
52 module_param(qlport_down_retry, int, S_IRUGO|S_IRUSR);
53 MODULE_PARM_DESC(qlport_down_retry,
54 "Maximum number of command retries to a port that returns"
55 "a PORT-DOWN status.");
57 int ql2xplogiabsentdevice;
58 module_param(ql2xplogiabsentdevice, int, S_IRUGO|S_IWUSR);
59 MODULE_PARM_DESC(ql2xplogiabsentdevice,
60 "Option to enable PLOGI to devices that are not present after "
61 "a Fabric scan. This is needed for several broken switches."
62 "Default is 0 - no PLOGI. 1 - perfom PLOGI.");
64 int ql2xenablezio = 0;
65 module_param(ql2xenablezio, int, S_IRUGO|S_IRUSR);
66 MODULE_PARM_DESC(ql2xenablezio,
67 "Option to enable ZIO:If 1 then enable it otherwise"
68 " use the default set in the NVRAM."
69 " Default is 0 : disabled");
71 int ql2xintrdelaytimer = 10;
72 module_param(ql2xintrdelaytimer, int, S_IRUGO|S_IRUSR);
73 MODULE_PARM_DESC(ql2xintrdelaytimer,
74 "ZIO: Waiting time for Firmware before it generates an "
75 "interrupt to the host to notify completion of request.");
77 int ql2xloginretrycount = 0;
78 module_param(ql2xloginretrycount, int, S_IRUGO|S_IRUSR);
79 MODULE_PARM_DESC(ql2xloginretrycount,
80 "Specify an alternate value for the NVRAM login retry count.");
82 static void qla2x00_free_device(scsi_qla_host_t *);
84 static void qla2x00_config_dma_addressing(scsi_qla_host_t *ha);
87 * SCSI host template entry points
89 static int qla2xxx_slave_configure(struct scsi_device * device);
90 static int qla2xxx_slave_alloc(struct scsi_device *);
91 static void qla2xxx_slave_destroy(struct scsi_device *);
92 static int qla2x00_queuecommand(struct scsi_cmnd *cmd,
93 void (*fn)(struct scsi_cmnd *));
94 static int qla2xxx_eh_abort(struct scsi_cmnd *);
95 static int qla2xxx_eh_device_reset(struct scsi_cmnd *);
96 static int qla2xxx_eh_bus_reset(struct scsi_cmnd *);
97 static int qla2xxx_eh_host_reset(struct scsi_cmnd *);
98 static int qla2x00_loop_reset(scsi_qla_host_t *ha);
99 static int qla2x00_device_reset(scsi_qla_host_t *, fc_port_t *);
101 static struct scsi_host_template qla2x00_driver_template = {
102 .module = THIS_MODULE,
104 .queuecommand = qla2x00_queuecommand,
106 .eh_abort_handler = qla2xxx_eh_abort,
107 .eh_device_reset_handler = qla2xxx_eh_device_reset,
108 .eh_bus_reset_handler = qla2xxx_eh_bus_reset,
109 .eh_host_reset_handler = qla2xxx_eh_host_reset,
111 .slave_configure = qla2xxx_slave_configure,
113 .slave_alloc = qla2xxx_slave_alloc,
114 .slave_destroy = qla2xxx_slave_destroy,
117 .use_clustering = ENABLE_CLUSTERING,
118 .sg_tablesize = SG_ALL,
121 * The RISC allows for each command to transfer (2^32-1) bytes of data,
122 * which equates to 0x800000 sectors.
124 .max_sectors = 0xFFFF,
127 static struct scsi_transport_template *qla2xxx_transport_template = NULL;
129 /* TODO Convert to inlines
133 #define WATCH_INTERVAL 1 /* number of seconds */
135 static void qla2x00_timer(scsi_qla_host_t *);
137 static __inline__ void qla2x00_start_timer(scsi_qla_host_t *,
138 void *, unsigned long);
139 static __inline__ void qla2x00_restart_timer(scsi_qla_host_t *, unsigned long);
140 static __inline__ void qla2x00_stop_timer(scsi_qla_host_t *);
143 qla2x00_start_timer(scsi_qla_host_t *ha, void *func, unsigned long interval)
145 init_timer(&ha->timer);
146 ha->timer.expires = jiffies + interval * HZ;
147 ha->timer.data = (unsigned long)ha;
148 ha->timer.function = (void (*)(unsigned long))func;
149 add_timer(&ha->timer);
150 ha->timer_active = 1;
154 qla2x00_restart_timer(scsi_qla_host_t *ha, unsigned long interval)
156 mod_timer(&ha->timer, jiffies + interval * HZ);
159 static __inline__ void
160 qla2x00_stop_timer(scsi_qla_host_t *ha)
162 del_timer_sync(&ha->timer);
163 ha->timer_active = 0;
166 static int qla2x00_do_dpc(void *data);
168 static void qla2x00_rst_aen(scsi_qla_host_t *);
170 static uint8_t qla2x00_mem_alloc(scsi_qla_host_t *);
171 static void qla2x00_mem_free(scsi_qla_host_t *ha);
172 static int qla2x00_allocate_sp_pool( scsi_qla_host_t *ha);
173 static void qla2x00_free_sp_pool(scsi_qla_host_t *ha);
174 static srb_t *qla2x00_get_new_sp(scsi_qla_host_t *);
175 static void qla2x00_sp_free_dma(scsi_qla_host_t *, srb_t *);
176 void qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *);
178 /* -------------------------------------------------------------------------- */
181 qla2x00_pci_info_str(struct scsi_qla_host *ha, char *str)
183 static char *pci_bus_modes[] = {
184 "33", "66", "100", "133",
189 pci_bus = (ha->pci_attr & (BIT_9 | BIT_10)) >> 9;
192 strcat(str, pci_bus_modes[pci_bus]);
194 pci_bus = (ha->pci_attr & BIT_8) >> 8;
196 strcat(str, pci_bus_modes[pci_bus]);
198 strcat(str, " MHz)");
204 qla2x00_fw_version_str(struct scsi_qla_host *ha, char *str)
208 sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
209 ha->fw_minor_version,
210 ha->fw_subminor_version);
212 if (ha->fw_attributes & BIT_9) {
217 switch (ha->fw_attributes & 0xFF) {
231 sprintf(un_str, "(%x)", ha->fw_attributes);
235 if (ha->fw_attributes & 0x100)
241 /**************************************************************************
242 * qla2x00_queuecommand
245 * Queue a command to the controller.
248 * cmd - pointer to Scsi cmd structure
249 * fn - pointer to Scsi done function
255 * The mid-level driver tries to ensures that queuecommand never gets invoked
256 * concurrently with itself or the interrupt handler (although the
257 * interrupt handler may call this routine as part of request-completion
259 **************************************************************************/
261 qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
263 scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
264 fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
269 cmd->result = DID_NO_CONNECT << 16;
270 goto qc_fail_command;
273 if (atomic_read(&fcport->state) != FCS_ONLINE) {
274 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
275 atomic_read(&ha->loop_state) == LOOP_DEAD) {
276 cmd->result = DID_NO_CONNECT << 16;
277 goto qc_fail_command;
282 spin_unlock_irq(ha->host->host_lock);
284 /* Allocate a command packet from the "sp" pool. */
285 if ((sp = qla2x00_get_new_sp(ha)) == NULL) {
286 goto qc_host_busy_lock;
294 CMD_SP(cmd) = (void *)sp;
295 cmd->scsi_done = done;
297 rval = qla2x00_start_scsi(sp);
298 if (rval != QLA_SUCCESS)
299 goto qc_host_busy_free_sp;
301 /* Manage unprocessed RIO/ZIO commands in response queue. */
302 if (ha->flags.online && ha->flags.process_response_queue &&
303 ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
306 spin_lock_irqsave(&ha->hardware_lock, flags);
307 qla2x00_process_response_queue(ha);
308 spin_unlock_irqrestore(&ha->hardware_lock, flags);
311 spin_lock_irq(ha->host->host_lock);
315 qc_host_busy_free_sp:
316 qla2x00_sp_free_dma(ha, sp);
318 mempool_free(sp, ha->srb_mempool);
321 spin_lock_irq(ha->host->host_lock);
324 return SCSI_MLQUEUE_HOST_BUSY;
333 * qla2x00_eh_wait_on_command
334 * Waits for the command to be returned by the Firmware for some
338 * ha = actual ha whose done queue will contain the command
339 * returned by firmware.
340 * cmd = Scsi Command to wait on.
341 * flag = Abort/Reset(Bus or Device Reset)
348 qla2x00_eh_wait_on_command(scsi_qla_host_t *ha, struct scsi_cmnd *cmd)
350 #define ABORT_POLLING_PERIOD HZ
351 #define ABORT_WAIT_ITER ((10 * HZ) / (ABORT_POLLING_PERIOD))
352 unsigned long wait_iter = ABORT_WAIT_ITER;
353 int ret = QLA_SUCCESS;
355 while (CMD_SP(cmd)) {
356 set_current_state(TASK_UNINTERRUPTIBLE);
357 schedule_timeout(ABORT_POLLING_PERIOD);
363 ret = QLA_FUNCTION_FAILED;
369 * qla2x00_wait_for_hba_online
370 * Wait till the HBA is online after going through
371 * <= MAX_RETRIES_OF_ISP_ABORT or
372 * finally HBA is disabled ie marked offline
375 * ha - pointer to host adapter structure
378 * Does context switching-Release SPIN_LOCK
379 * (if any) before calling this routine.
382 * Success (Adapter is online) : 0
383 * Failed (Adapter is offline/disabled) : 1
386 qla2x00_wait_for_hba_online(scsi_qla_host_t *ha)
389 unsigned long wait_online;
391 wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ);
392 while (((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) ||
393 test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags) ||
394 test_bit(ISP_ABORT_RETRY, &ha->dpc_flags) ||
395 ha->dpc_active) && time_before(jiffies, wait_online)) {
399 if (ha->flags.online)
400 return_status = QLA_SUCCESS;
402 return_status = QLA_FUNCTION_FAILED;
404 DEBUG2(printk("%s return_status=%d\n",__func__,return_status));
406 return (return_status);
410 * qla2x00_wait_for_loop_ready
411 * Wait for MAX_LOOP_TIMEOUT(5 min) value for loop
412 * to be in LOOP_READY state.
414 * ha - pointer to host adapter structure
417 * Does context switching-Release SPIN_LOCK
418 * (if any) before calling this routine.
422 * Success (LOOP_READY) : 0
423 * Failed (LOOP_NOT_READY) : 1
426 qla2x00_wait_for_loop_ready(scsi_qla_host_t *ha)
428 int return_status = QLA_SUCCESS;
429 unsigned long loop_timeout ;
431 /* wait for 5 min at the max for loop to be ready */
432 loop_timeout = jiffies + (MAX_LOOP_TIMEOUT * HZ);
434 while ((!atomic_read(&ha->loop_down_timer) &&
435 atomic_read(&ha->loop_state) == LOOP_DOWN) ||
436 atomic_read(&ha->loop_state) != LOOP_READY) {
438 if (time_after_eq(jiffies, loop_timeout)) {
439 return_status = QLA_FUNCTION_FAILED;
443 return (return_status);
446 /**************************************************************************
450 * The abort function will abort the specified command.
453 * cmd = Linux SCSI command packet to be aborted.
456 * Either SUCCESS or FAILED.
459 **************************************************************************/
461 qla2xxx_eh_abort(struct scsi_cmnd *cmd)
463 scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
466 unsigned int id, lun;
467 unsigned long serial;
475 id = cmd->device->id;
476 lun = cmd->device->lun;
477 serial = cmd->serial_number;
479 /* Check active list for command command. */
480 spin_lock_irqsave(&ha->hardware_lock, flags);
481 for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
482 sp = ha->outstanding_cmds[i];
490 DEBUG2(printk("%s(%ld): aborting sp %p from RISC. pid=%ld "
491 "sp->state=%x\n", __func__, ha->host_no, sp, serial,
493 DEBUG3(qla2x00_print_scsi_cmd(cmd);)
495 spin_unlock_irqrestore(&ha->hardware_lock, flags);
496 if (ha->isp_ops.abort_command(ha, sp)) {
497 DEBUG2(printk("%s(%ld): abort_command "
498 "mbx failed.\n", __func__, ha->host_no));
500 DEBUG3(printk("%s(%ld): abort_command "
501 "mbx success.\n", __func__, ha->host_no));
504 spin_lock_irqsave(&ha->hardware_lock, flags);
508 spin_unlock_irqrestore(&ha->hardware_lock, flags);
510 /* Wait for the command to be returned. */
511 if (ret == SUCCESS) {
512 if (qla2x00_eh_wait_on_command(ha, cmd) != QLA_SUCCESS) {
513 qla_printk(KERN_ERR, ha,
514 "scsi(%ld:%d:%d): Abort handler timed out -- %lx "
515 "%x.\n", ha->host_no, id, lun, serial, ret);
519 qla_printk(KERN_INFO, ha,
520 "scsi(%ld:%d:%d): Abort command issued -- %lx %x.\n", ha->host_no,
521 id, lun, serial, ret);
526 /**************************************************************************
527 * qla2x00_eh_wait_for_pending_target_commands
530 * Waits for all the commands to come back from the specified target.
533 * ha - pointer to scsi_qla_host structure.
536 * Either SUCCESS or FAILED.
539 **************************************************************************/
541 qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t)
546 struct scsi_cmnd *cmd;
552 * Waiting for all commands for the designated target in the active
555 for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
556 spin_lock_irqsave(&ha->hardware_lock, flags);
557 sp = ha->outstanding_cmds[cnt];
560 spin_unlock_irqrestore(&ha->hardware_lock, flags);
561 if (cmd->device->id == t) {
562 if (!qla2x00_eh_wait_on_command(ha, cmd)) {
568 spin_unlock_irqrestore(&ha->hardware_lock, flags);
575 /**************************************************************************
576 * qla2xxx_eh_device_reset
579 * The device reset function will reset the target and abort any
580 * executing commands.
582 * NOTE: The use of SP is undefined within this context. Do *NOT*
583 * attempt to use this value, even if you determine it is
587 * cmd = Linux SCSI command packet of the command that cause the
591 * SUCCESS/FAILURE (defined as macro in scsi.h).
593 **************************************************************************/
595 qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
597 scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
598 fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
601 unsigned int id, lun;
602 unsigned long serial;
606 id = cmd->device->id;
607 lun = cmd->device->lun;
608 serial = cmd->serial_number;
610 sp = (srb_t *) CMD_SP(cmd);
614 qla_printk(KERN_INFO, ha,
615 "scsi(%ld:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, id, lun);
617 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
618 goto eh_dev_reset_done;
620 if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
621 if (qla2x00_device_reset(ha, fcport) == 0)
624 #if defined(LOGOUT_AFTER_DEVICE_RESET)
625 if (ret == SUCCESS) {
626 if (fcport->flags & FC_FABRIC_DEVICE) {
627 ha->isp_ops.fabric_logout(ha, fcport->loop_id);
628 qla2x00_mark_device_lost(ha, fcport);
633 DEBUG2(printk(KERN_INFO
634 "%s failed: loop not ready\n",__func__);)
638 DEBUG3(printk("%s(%ld): device reset failed\n",
639 __func__, ha->host_no));
640 qla_printk(KERN_INFO, ha, "%s: device reset failed\n",
643 goto eh_dev_reset_done;
647 * If we are coming down the EH path, wait for all commands to
648 * complete for the device.
650 if (cmd->device->host->eh_active) {
651 if (qla2x00_eh_wait_for_pending_target_commands(ha, id))
655 DEBUG3(printk("%s(%ld): failed while waiting for "
656 "commands\n", __func__, ha->host_no));
657 qla_printk(KERN_INFO, ha,
658 "%s: failed while waiting for commands\n",
661 goto eh_dev_reset_done;
665 qla_printk(KERN_INFO, ha,
666 "scsi(%ld:%d:%d): DEVICE RESET SUCCEEDED.\n", ha->host_no, id, lun);
672 /**************************************************************************
673 * qla2x00_eh_wait_for_pending_commands
676 * Waits for all the commands to come back from the specified host.
679 * ha - pointer to scsi_qla_host structure.
686 **************************************************************************/
688 qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha)
693 struct scsi_cmnd *cmd;
699 * Waiting for all commands for the designated target in the active
702 for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
703 spin_lock_irqsave(&ha->hardware_lock, flags);
704 sp = ha->outstanding_cmds[cnt];
707 spin_unlock_irqrestore(&ha->hardware_lock, flags);
708 status = qla2x00_eh_wait_on_command(ha, cmd);
713 spin_unlock_irqrestore(&ha->hardware_lock, flags);
720 /**************************************************************************
721 * qla2xxx_eh_bus_reset
724 * The bus reset function will reset the bus and abort any executing
728 * cmd = Linux SCSI command packet of the command that cause the
732 * SUCCESS/FAILURE (defined as macro in scsi.h).
734 **************************************************************************/
736 qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
738 scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
739 fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
742 unsigned int id, lun;
743 unsigned long serial;
747 id = cmd->device->id;
748 lun = cmd->device->lun;
749 serial = cmd->serial_number;
751 sp = (srb_t *) CMD_SP(cmd);
755 qla_printk(KERN_INFO, ha,
756 "scsi(%ld:%d:%d): LOOP RESET ISSUED.\n", ha->host_no, id, lun);
758 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
759 DEBUG2(printk("%s failed:board disabled\n",__func__));
760 goto eh_bus_reset_done;
763 if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
764 if (qla2x00_loop_reset(ha) == QLA_SUCCESS)
768 goto eh_bus_reset_done;
770 /* Waiting for our command in done_queue to be returned to OS.*/
771 if (cmd->device->host->eh_active)
772 if (!qla2x00_eh_wait_for_pending_commands(ha))
776 qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
777 (ret == FAILED) ? "failed" : "succeded");
782 /**************************************************************************
783 * qla2xxx_eh_host_reset
786 * The reset function will reset the Adapter.
789 * cmd = Linux SCSI command packet of the command that cause the
793 * Either SUCCESS or FAILED.
796 **************************************************************************/
798 qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
800 scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
801 fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
804 unsigned int id, lun;
805 unsigned long serial;
809 id = cmd->device->id;
810 lun = cmd->device->lun;
811 serial = cmd->serial_number;
813 sp = (srb_t *) CMD_SP(cmd);
817 qla_printk(KERN_INFO, ha,
818 "scsi(%ld:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, id, lun);
820 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
821 goto eh_host_reset_lock;
824 * Fixme-may be dpc thread is active and processing
825 * loop_resync,so wait a while for it to
826 * be completed and then issue big hammer.Otherwise
827 * it may cause I/O failure as big hammer marks the
828 * devices as lost kicking of the port_down_timer
829 * while dpc is stuck for the mailbox to complete.
831 qla2x00_wait_for_loop_ready(ha);
832 set_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
833 if (qla2x00_abort_isp(ha)) {
834 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
835 /* failed. schedule dpc to try */
836 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
838 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
839 goto eh_host_reset_lock;
841 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
843 /* Waiting for our command in done_queue to be returned to OS.*/
844 if (qla2x00_eh_wait_for_pending_commands(ha))
848 qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
849 (ret == FAILED) ? "failed" : "succeded");
859 * ha = adapter block pointer.
865 qla2x00_loop_reset(scsi_qla_host_t *ha)
867 int status = QLA_SUCCESS;
868 struct fc_port *fcport;
870 if (ha->flags.enable_lip_reset) {
871 status = qla2x00_lip_reset(ha);
874 if (status == QLA_SUCCESS && ha->flags.enable_target_reset) {
875 list_for_each_entry(fcport, &ha->fcports, list) {
876 if (fcport->port_type != FCT_TARGET)
879 status = qla2x00_target_reset(ha, fcport);
880 if (status != QLA_SUCCESS)
885 if (status == QLA_SUCCESS &&
886 ((!ha->flags.enable_target_reset &&
887 !ha->flags.enable_lip_reset) ||
888 ha->flags.enable_lip_full_login)) {
890 status = qla2x00_full_login_lip(ha);
893 /* Issue marker command only when we are going to start the I/O */
894 ha->marker_needed = 1;
898 DEBUG2_3(printk("%s(%ld): **** FAILED ****\n",
903 DEBUG3(printk("%s(%ld): exiting normally.\n",
912 * qla2x00_device_reset
913 * Issue bus device reset message to the target.
916 * ha = adapter block pointer.
918 * TARGET_QUEUE_LOCK must be released.
919 * ADAPTER_STATE_LOCK must be released.
925 qla2x00_device_reset(scsi_qla_host_t *ha, fc_port_t *reset_fcport)
927 /* Abort Target command will clear Reservation */
928 return ha->isp_ops.abort_target(reset_fcport);
932 qla2xxx_slave_alloc(struct scsi_device *sdev)
934 scsi_qla_host_t *ha = to_qla_host(sdev->host);
935 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
943 list_for_each_entry(fcport, &ha->fcports, list) {
944 if (rport->port_name ==
945 be64_to_cpu(*(uint64_t *)fcport->port_name)) {
953 sdev->hostdata = fcport;
959 qla2xxx_slave_configure(struct scsi_device *sdev)
961 scsi_qla_host_t *ha = to_qla_host(sdev->host);
962 struct fc_rport *rport = starget_to_rport(sdev->sdev_target);
964 if (sdev->tagged_supported)
965 scsi_activate_tcq(sdev, 32);
967 scsi_deactivate_tcq(sdev, 32);
969 rport->dev_loss_tmo = ha->port_down_retry_count + 5;
975 qla2xxx_slave_destroy(struct scsi_device *sdev)
977 sdev->hostdata = NULL;
981 * qla2x00_config_dma_addressing() - Configure OS DMA addressing method.
984 * At exit, the @ha's flags.enable_64bit_addressing set to indicated
985 * supported addressing method.
988 qla2x00_config_dma_addressing(scsi_qla_host_t *ha)
990 /* Assume 32bit DMA address */
991 ha->flags.enable_64bit_addressing = 0;
994 * Given the two variants pci_set_dma_mask(), allow the compiler to
995 * assist in setting the proper dma mask.
997 if (sizeof(dma_addr_t) > 4) {
998 if (pci_set_dma_mask(ha->pdev, DMA_64BIT_MASK) == 0) {
999 ha->flags.enable_64bit_addressing = 1;
1000 ha->isp_ops.calc_req_entries = qla2x00_calc_iocbs_64;
1001 ha->isp_ops.build_iocbs = qla2x00_build_scsi_iocbs_64;
1003 if (pci_set_consistent_dma_mask(ha->pdev,
1005 qla_printk(KERN_DEBUG, ha,
1006 "Failed to set 64 bit PCI consistent mask; "
1008 pci_set_consistent_dma_mask(ha->pdev,
1012 qla_printk(KERN_DEBUG, ha,
1013 "Failed to set 64 bit PCI DMA mask, falling back "
1014 "to 32 bit MASK.\n");
1015 pci_set_dma_mask(ha->pdev, DMA_32BIT_MASK);
1018 pci_set_dma_mask(ha->pdev, DMA_32BIT_MASK);
1023 qla2x00_iospace_config(scsi_qla_host_t *ha)
1025 unsigned long pio, pio_len, pio_flags;
1026 unsigned long mmio, mmio_len, mmio_flags;
1028 /* We only need PIO for Flash operations on ISP2312 v2 chips. */
1029 pio = pci_resource_start(ha->pdev, 0);
1030 pio_len = pci_resource_len(ha->pdev, 0);
1031 pio_flags = pci_resource_flags(ha->pdev, 0);
1032 if (pio_flags & IORESOURCE_IO) {
1033 if (pio_len < MIN_IOBASE_LEN) {
1034 qla_printk(KERN_WARNING, ha,
1035 "Invalid PCI I/O region size (%s)...\n",
1036 pci_name(ha->pdev));
1040 qla_printk(KERN_WARNING, ha,
1041 "region #0 not a PIO resource (%s)...\n",
1042 pci_name(ha->pdev));
1046 /* Use MMIO operations for all accesses. */
1047 mmio = pci_resource_start(ha->pdev, 1);
1048 mmio_len = pci_resource_len(ha->pdev, 1);
1049 mmio_flags = pci_resource_flags(ha->pdev, 1);
1051 if (!(mmio_flags & IORESOURCE_MEM)) {
1052 qla_printk(KERN_ERR, ha,
1053 "region #0 not an MMIO resource (%s), aborting\n",
1054 pci_name(ha->pdev));
1055 goto iospace_error_exit;
1057 if (mmio_len < MIN_IOBASE_LEN) {
1058 qla_printk(KERN_ERR, ha,
1059 "Invalid PCI mem region size (%s), aborting\n",
1060 pci_name(ha->pdev));
1061 goto iospace_error_exit;
1064 if (pci_request_regions(ha->pdev, ha->brd_info->drv_name)) {
1065 qla_printk(KERN_WARNING, ha,
1066 "Failed to reserve PIO/MMIO regions (%s)\n",
1067 pci_name(ha->pdev));
1069 goto iospace_error_exit;
1072 ha->pio_address = pio;
1073 ha->pio_length = pio_len;
1074 ha->iobase = ioremap(mmio, MIN_IOBASE_LEN);
1076 qla_printk(KERN_ERR, ha,
1077 "cannot remap MMIO (%s), aborting\n", pci_name(ha->pdev));
1079 goto iospace_error_exit;
1089 qla2x00_enable_intrs(scsi_qla_host_t *ha)
1091 unsigned long flags = 0;
1092 device_reg_t __iomem *reg = ha->iobase;
1094 spin_lock_irqsave(&ha->hardware_lock, flags);
1095 ha->interrupts_on = 1;
1096 /* enable risc and host interrupts */
1097 WRT_REG_WORD(®->ictrl, ICR_EN_INT | ICR_EN_RISC);
1098 RD_REG_WORD(®->ictrl);
1099 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1104 qla2x00_disable_intrs(scsi_qla_host_t *ha)
1106 unsigned long flags = 0;
1107 device_reg_t __iomem *reg = ha->iobase;
1109 spin_lock_irqsave(&ha->hardware_lock, flags);
1110 ha->interrupts_on = 0;
1111 /* disable risc and host interrupts */
1112 WRT_REG_WORD(®->ictrl, 0);
1113 RD_REG_WORD(®->ictrl);
1114 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1118 * PCI driver interface
1120 int qla2x00_probe_one(struct pci_dev *pdev, struct qla_board_info *brd_info)
1123 device_reg_t __iomem *reg;
1124 struct Scsi_Host *host;
1125 scsi_qla_host_t *ha;
1126 unsigned long flags = 0;
1127 unsigned long wait_switch = 0;
1132 if (pci_enable_device(pdev))
1135 host = scsi_host_alloc(&qla2x00_driver_template,
1136 sizeof(scsi_qla_host_t));
1139 "qla2xxx: Couldn't allocate host from scsi layer!\n");
1140 goto probe_disable_device;
1143 /* Clear our data area */
1144 ha = (scsi_qla_host_t *)host->hostdata;
1145 memset(ha, 0, sizeof(scsi_qla_host_t));
1149 ha->host_no = host->host_no;
1150 ha->brd_info = brd_info;
1151 sprintf(ha->host_str, "%s_%ld", ha->brd_info->drv_name, ha->host_no);
1153 /* Configure PCI I/O space */
1154 ret = qla2x00_iospace_config(ha);
1158 /* Sanitize the information from PCI BIOS. */
1159 host->irq = pdev->irq;
1161 qla_printk(KERN_INFO, ha,
1162 "Found an %s, irq %d, iobase 0x%p\n", ha->brd_info->isp_name,
1163 host->irq, ha->iobase);
1165 spin_lock_init(&ha->hardware_lock);
1167 ha->prev_topology = 0;
1168 ha->ports = MAX_BUSES;
1170 /* Assign ISP specific operations. */
1171 ha->isp_ops.pci_config = qla2100_pci_config;
1172 ha->isp_ops.reset_chip = qla2x00_reset_chip;
1173 ha->isp_ops.chip_diag = qla2x00_chip_diag;
1174 ha->isp_ops.config_rings = qla2x00_config_rings;
1175 ha->isp_ops.reset_adapter = qla2x00_reset_adapter;
1176 ha->isp_ops.nvram_config = qla2x00_nvram_config;
1177 ha->isp_ops.update_fw_options = qla2x00_update_fw_options;
1178 ha->isp_ops.pci_info_str = qla2x00_pci_info_str;
1179 ha->isp_ops.fw_version_str = qla2x00_fw_version_str;
1180 ha->isp_ops.intr_handler = qla2100_intr_handler;
1181 ha->isp_ops.enable_intrs = qla2x00_enable_intrs;
1182 ha->isp_ops.disable_intrs = qla2x00_disable_intrs;
1183 ha->isp_ops.abort_command = qla2x00_abort_command;
1184 ha->isp_ops.abort_target = qla2x00_abort_target;
1185 ha->isp_ops.fabric_login = qla2x00_login_fabric;
1186 ha->isp_ops.fabric_logout = qla2x00_fabric_logout;
1187 ha->isp_ops.calc_req_entries = qla2x00_calc_iocbs_32;
1188 ha->isp_ops.build_iocbs = qla2x00_build_scsi_iocbs_32;
1189 ha->isp_ops.prep_ms_iocb = qla2x00_prep_ms_iocb;
1190 ha->isp_ops.fw_dump = qla2100_fw_dump;
1191 ha->isp_ops.ascii_fw_dump = qla2100_ascii_fw_dump;
1192 if (IS_QLA2100(ha)) {
1193 host->max_id = MAX_TARGETS_2100;
1194 ha->mbx_count = MAILBOX_REGISTER_COUNT_2100;
1195 ha->request_q_length = REQUEST_ENTRY_CNT_2100;
1196 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1197 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1198 host->sg_tablesize = 32;
1199 ha->gid_list_info_size = 4;
1200 } else if (IS_QLA2200(ha)) {
1201 host->max_id = MAX_TARGETS_2200;
1202 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1203 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1204 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1205 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1206 ha->gid_list_info_size = 4;
1207 } else /*if (IS_QLA2300(ha))*/ {
1208 host->max_id = MAX_TARGETS_2200;
1209 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1210 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1211 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1212 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1213 ha->isp_ops.pci_config = qla2300_pci_config;
1214 ha->isp_ops.intr_handler = qla2300_intr_handler;
1215 ha->isp_ops.fw_dump = qla2300_fw_dump;
1216 ha->isp_ops.ascii_fw_dump = qla2300_ascii_fw_dump;
1217 ha->gid_list_info_size = 6;
1219 host->can_queue = ha->request_q_length + 128;
1221 /* load the F/W, read paramaters, and init the H/W */
1222 ha->instance = num_hosts;
1224 init_MUTEX(&ha->mbx_cmd_sem);
1225 init_MUTEX_LOCKED(&ha->mbx_intr_sem);
1227 INIT_LIST_HEAD(&ha->list);
1228 INIT_LIST_HEAD(&ha->fcports);
1229 INIT_LIST_HEAD(&ha->rscn_fcports);
1232 * These locks are used to prevent more than one CPU
1233 * from modifying the queue at the same time. The
1234 * higher level "host_lock" will reduce most
1235 * contention for these locks.
1237 spin_lock_init(&ha->mbx_reg_lock);
1240 init_completion(&ha->dpc_inited);
1241 init_completion(&ha->dpc_exited);
1243 qla2x00_config_dma_addressing(ha);
1244 if (qla2x00_mem_alloc(ha)) {
1245 qla_printk(KERN_WARNING, ha,
1246 "[ERROR] Failed to allocate memory for adapter\n");
1252 if (qla2x00_initialize_adapter(ha) &&
1253 !(ha->device_flags & DFLG_NO_CABLE)) {
1255 qla_printk(KERN_WARNING, ha,
1256 "Failed to initialize adapter\n");
1258 DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
1259 "Adapter flags %x.\n",
1260 ha->host_no, ha->device_flags));
1267 * Startup the kernel thread for this host adapter
1269 ha->dpc_should_die = 0;
1270 ha->dpc_pid = kernel_thread(qla2x00_do_dpc, ha, 0);
1271 if (ha->dpc_pid < 0) {
1272 qla_printk(KERN_WARNING, ha,
1273 "Unable to start DPC thread!\n");
1278 wait_for_completion(&ha->dpc_inited);
1280 host->this_id = 255;
1281 host->cmd_per_lun = 3;
1282 host->unique_id = ha->instance;
1283 host->max_cmd_len = MAX_CMDSZ;
1284 host->max_channel = ha->ports - 1;
1285 host->max_lun = MAX_LUNS;
1286 host->transportt = qla2xxx_transport_template;
1288 ret = request_irq(host->irq, ha->isp_ops.intr_handler,
1289 SA_INTERRUPT|SA_SHIRQ, ha->brd_info->drv_name, ha);
1291 qla_printk(KERN_WARNING, ha,
1292 "Failed to reserve interrupt %d already in use.\n",
1297 /* Initialized the timer */
1298 qla2x00_start_timer(ha, qla2x00_timer, WATCH_INTERVAL);
1300 DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
1305 ha->isp_ops.disable_intrs(ha);
1307 /* Ensure mailbox registers are free. */
1308 spin_lock_irqsave(&ha->hardware_lock, flags);
1309 WRT_REG_WORD(®->semaphore, 0);
1310 WRT_REG_WORD(®->hccr, HCCR_CLR_RISC_INT);
1311 WRT_REG_WORD(®->hccr, HCCR_CLR_HOST_INT);
1313 /* Enable proper parity */
1314 if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) {
1317 WRT_REG_WORD(®->hccr, (HCCR_ENABLE_PARITY + 0x1));
1319 /* SRAM, Instruction RAM and GP RAM parity */
1320 WRT_REG_WORD(®->hccr, (HCCR_ENABLE_PARITY + 0x7));
1322 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1324 ha->isp_ops.enable_intrs(ha);
1328 * Wait around max loop_reset_delay secs for the devices to come
1329 * on-line. We don't want Linux scanning before we are ready.
1332 for (wait_switch = jiffies + (ha->loop_reset_delay * HZ);
1333 time_before(jiffies,wait_switch) &&
1334 !(ha->device_flags & (DFLG_NO_CABLE | DFLG_FABRIC_DEVICES))
1335 && (ha->device_flags & SWITCH_FOUND) ;) {
1337 qla2x00_check_fabric_devices(ha);
1342 pci_set_drvdata(pdev, ha);
1343 ha->flags.init_done = 1;
1346 ret = scsi_add_host(host, &pdev->dev);
1350 qla2x00_alloc_sysfs_attr(ha);
1352 qla2x00_init_host_attr(ha);
1354 qla_printk(KERN_INFO, ha, "\n"
1355 " QLogic Fibre Channel HBA Driver: %s\n"
1357 " %s: %s @ %s hdma%c, host#=%ld, fw=%s\n", qla2x00_version_str,
1358 ha->model_number, ha->model_desc ? ha->model_desc: "",
1359 ha->brd_info->isp_name, ha->isp_ops.pci_info_str(ha, pci_info),
1360 pci_name(ha->pdev), ha->flags.enable_64bit_addressing ? '+': '-',
1361 ha->host_no, ha->isp_ops.fw_version_str(ha, fw_str));
1363 /* Go with fc_rport registration. */
1364 list_for_each_entry(fcport, &ha->fcports, list)
1365 qla2x00_reg_remote_port(ha, fcport);
1370 fc_remove_host(ha->host);
1372 qla2x00_free_device(ha);
1374 scsi_host_put(host);
1376 probe_disable_device:
1377 pci_disable_device(pdev);
1382 EXPORT_SYMBOL_GPL(qla2x00_probe_one);
1384 void qla2x00_remove_one(struct pci_dev *pdev)
1386 scsi_qla_host_t *ha;
1388 ha = pci_get_drvdata(pdev);
1390 qla2x00_free_sysfs_attr(ha);
1392 fc_remove_host(ha->host);
1394 scsi_remove_host(ha->host);
1396 qla2x00_free_device(ha);
1398 scsi_host_put(ha->host);
1400 pci_set_drvdata(pdev, NULL);
1402 EXPORT_SYMBOL_GPL(qla2x00_remove_one);
1405 qla2x00_free_device(scsi_qla_host_t *ha)
1409 /* Abort any outstanding IO descriptors. */
1410 if (!IS_QLA2100(ha) && !IS_QLA2200(ha))
1411 qla2x00_cancel_io_descriptors(ha);
1413 /* turn-off interrupts on the card */
1414 if (ha->interrupts_on)
1415 ha->isp_ops.disable_intrs(ha);
1418 if (ha->timer_active)
1419 qla2x00_stop_timer(ha);
1421 /* Kill the kernel thread for this host */
1422 if (ha->dpc_pid >= 0) {
1423 ha->dpc_should_die = 1;
1425 ret = kill_proc(ha->dpc_pid, SIGHUP, 1);
1427 qla_printk(KERN_ERR, ha,
1428 "Unable to signal DPC thread -- (%d)\n", ret);
1430 /* TODO: SOMETHING MORE??? */
1432 wait_for_completion(&ha->dpc_exited);
1436 qla2x00_mem_free(ha);
1439 ha->flags.online = 0;
1441 /* Detach interrupts */
1443 free_irq(ha->pdev->irq, ha);
1445 /* release io space registers */
1447 iounmap(ha->iobase);
1448 pci_release_regions(ha->pdev);
1450 pci_disable_device(ha->pdev);
1454 * qla2x00_mark_device_lost Updates fcport state when device goes offline.
1456 * Input: ha = adapter block pointer. fcport = port structure pointer.
1462 void qla2x00_mark_device_lost(scsi_qla_host_t *ha, fc_port_t *fcport,
1465 if (atomic_read(&fcport->state) == FCS_ONLINE && fcport->rport)
1466 fc_remote_port_block(fcport->rport);
1468 * We may need to retry the login, so don't change the state of the
1469 * port but do the retries.
1471 if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD)
1472 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1477 if (fcport->login_retry == 0) {
1478 fcport->login_retry = ha->login_retry_count;
1479 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
1481 DEBUG(printk("scsi(%ld): Port login retry: "
1482 "%02x%02x%02x%02x%02x%02x%02x%02x, "
1483 "id = 0x%04x retry cnt=%d\n",
1485 fcport->port_name[0],
1486 fcport->port_name[1],
1487 fcport->port_name[2],
1488 fcport->port_name[3],
1489 fcport->port_name[4],
1490 fcport->port_name[5],
1491 fcport->port_name[6],
1492 fcport->port_name[7],
1494 fcport->login_retry));
1499 * qla2x00_mark_all_devices_lost
1500 * Updates fcport state when device goes offline.
1503 * ha = adapter block pointer.
1504 * fcport = port structure pointer.
1512 qla2x00_mark_all_devices_lost(scsi_qla_host_t *ha)
1516 list_for_each_entry(fcport, &ha->fcports, list) {
1517 if (fcport->port_type != FCT_TARGET)
1521 * No point in marking the device as lost, if the device is
1524 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
1526 if (atomic_read(&fcport->state) == FCS_ONLINE && fcport->rport)
1527 fc_remote_port_block(fcport->rport);
1528 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1534 * Allocates adapter memory.
1541 qla2x00_mem_alloc(scsi_qla_host_t *ha)
1549 * This will loop only once if everything goes well, else some
1550 * number of retries will be performed to get around a kernel
1551 * bug where available mem is not allocated until after a
1552 * little delay and a retry.
1554 ha->request_ring = dma_alloc_coherent(&ha->pdev->dev,
1555 (ha->request_q_length + 1) * sizeof(request_t),
1556 &ha->request_dma, GFP_KERNEL);
1557 if (ha->request_ring == NULL) {
1558 qla_printk(KERN_WARNING, ha,
1559 "Memory Allocation failed - request_ring\n");
1561 qla2x00_mem_free(ha);
1567 ha->response_ring = dma_alloc_coherent(&ha->pdev->dev,
1568 (ha->response_q_length + 1) * sizeof(response_t),
1569 &ha->response_dma, GFP_KERNEL);
1570 if (ha->response_ring == NULL) {
1571 qla_printk(KERN_WARNING, ha,
1572 "Memory Allocation failed - response_ring\n");
1574 qla2x00_mem_free(ha);
1580 ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
1581 &ha->gid_list_dma, GFP_KERNEL);
1582 if (ha->gid_list == NULL) {
1583 qla_printk(KERN_WARNING, ha,
1584 "Memory Allocation failed - gid_list\n");
1586 qla2x00_mem_free(ha);
1592 ha->rlc_rsp = dma_alloc_coherent(&ha->pdev->dev,
1593 sizeof(rpt_lun_cmd_rsp_t), &ha->rlc_rsp_dma, GFP_KERNEL);
1594 if (ha->rlc_rsp == NULL) {
1595 qla_printk(KERN_WARNING, ha,
1596 "Memory Allocation failed - rlc");
1598 qla2x00_mem_free(ha);
1604 snprintf(name, sizeof(name), "qla2xxx_%ld", ha->host_no);
1605 ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
1606 DMA_POOL_SIZE, 8, 0);
1607 if (ha->s_dma_pool == NULL) {
1608 qla_printk(KERN_WARNING, ha,
1609 "Memory Allocation failed - s_dma_pool\n");
1611 qla2x00_mem_free(ha);
1617 /* get consistent memory allocated for init control block */
1618 ha->init_cb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1620 if (ha->init_cb == NULL) {
1621 qla_printk(KERN_WARNING, ha,
1622 "Memory Allocation failed - init_cb\n");
1624 qla2x00_mem_free(ha);
1629 memset(ha->init_cb, 0, sizeof(init_cb_t));
1631 /* Get consistent memory allocated for Get Port Database cmd */
1632 ha->iodesc_pd = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1633 &ha->iodesc_pd_dma);
1634 if (ha->iodesc_pd == NULL) {
1636 qla_printk(KERN_WARNING, ha,
1637 "Memory Allocation failed - iodesc_pd\n");
1639 qla2x00_mem_free(ha);
1644 memset(ha->iodesc_pd, 0, PORT_DATABASE_SIZE);
1646 /* Allocate ioctl related memory. */
1647 if (qla2x00_alloc_ioctl_mem(ha)) {
1648 qla_printk(KERN_WARNING, ha,
1649 "Memory Allocation failed - ioctl_mem\n");
1651 qla2x00_mem_free(ha);
1657 if (qla2x00_allocate_sp_pool(ha)) {
1658 qla_printk(KERN_WARNING, ha,
1659 "Memory Allocation failed - "
1660 "qla2x00_allocate_sp_pool()\n");
1662 qla2x00_mem_free(ha);
1668 /* Allocate memory for SNS commands */
1669 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
1670 /* Get consistent memory allocated for SNS commands */
1671 ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev,
1672 sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma,
1674 if (ha->sns_cmd == NULL) {
1676 qla_printk(KERN_WARNING, ha,
1677 "Memory Allocation failed - sns_cmd\n");
1679 qla2x00_mem_free(ha);
1684 memset(ha->sns_cmd, 0, sizeof(struct sns_cmd_pkt));
1686 /* Get consistent memory allocated for MS IOCB */
1687 ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1689 if (ha->ms_iocb == NULL) {
1691 qla_printk(KERN_WARNING, ha,
1692 "Memory Allocation failed - ms_iocb\n");
1694 qla2x00_mem_free(ha);
1699 memset(ha->ms_iocb, 0, sizeof(ms_iocb_entry_t));
1702 * Get consistent memory allocated for CT SNS
1705 ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev,
1706 sizeof(struct ct_sns_pkt), &ha->ct_sns_dma,
1708 if (ha->ct_sns == NULL) {
1710 qla_printk(KERN_WARNING, ha,
1711 "Memory Allocation failed - ct_sns\n");
1713 qla2x00_mem_free(ha);
1718 memset(ha->ct_sns, 0, sizeof(struct ct_sns_pkt));
1721 /* Done all allocations without any error. */
1724 } while (retry-- && status != 0);
1728 "%s(): **** FAILED ****\n", __func__);
1736 * Frees all adapter allocated memory.
1739 * ha = adapter block pointer.
1742 qla2x00_mem_free(scsi_qla_host_t *ha)
1744 struct list_head *fcpl, *fcptemp;
1746 unsigned long wtime;/* max wait time if mbx cmd is busy. */
1750 DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__));
1754 /* Make sure all other threads are stopped. */
1756 while (ha->dpc_wait && wtime) {
1757 set_current_state(TASK_INTERRUPTIBLE);
1758 wtime = schedule_timeout(wtime);
1761 /* free ioctl memory */
1762 qla2x00_free_ioctl_mem(ha);
1765 qla2x00_free_sp_pool(ha);
1768 dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
1769 ha->sns_cmd, ha->sns_cmd_dma);
1772 dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
1773 ha->ct_sns, ha->ct_sns_dma);
1776 dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
1779 dma_pool_free(ha->s_dma_pool, ha->iodesc_pd, ha->iodesc_pd_dma);
1782 dma_pool_free(ha->s_dma_pool, ha->init_cb, ha->init_cb_dma);
1785 dma_pool_destroy(ha->s_dma_pool);
1788 dma_free_coherent(&ha->pdev->dev,
1789 sizeof(rpt_lun_cmd_rsp_t), ha->rlc_rsp,
1793 dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
1796 if (ha->response_ring)
1797 dma_free_coherent(&ha->pdev->dev,
1798 (ha->response_q_length + 1) * sizeof(response_t),
1799 ha->response_ring, ha->response_dma);
1801 if (ha->request_ring)
1802 dma_free_coherent(&ha->pdev->dev,
1803 (ha->request_q_length + 1) * sizeof(request_t),
1804 ha->request_ring, ha->request_dma);
1807 ha->sns_cmd_dma = 0;
1811 ha->ms_iocb_dma = 0;
1812 ha->iodesc_pd = NULL;
1813 ha->iodesc_pd_dma = 0;
1815 ha->init_cb_dma = 0;
1817 ha->s_dma_pool = NULL;
1820 ha->rlc_rsp_dma = 0;
1821 ha->gid_list = NULL;
1822 ha->gid_list_dma = 0;
1824 ha->response_ring = NULL;
1825 ha->response_dma = 0;
1826 ha->request_ring = NULL;
1827 ha->request_dma = 0;
1829 list_for_each_safe(fcpl, fcptemp, &ha->fcports) {
1830 fcport = list_entry(fcpl, fc_port_t, list);
1833 list_del_init(&fcport->list);
1836 INIT_LIST_HEAD(&ha->fcports);
1839 free_pages((unsigned long)ha->fw_dump, ha->fw_dump_order);
1841 if (ha->fw_dump_buffer)
1842 vfree(ha->fw_dump_buffer);
1845 ha->fw_dump_reading = 0;
1846 ha->fw_dump_buffer = NULL;
1850 * qla2x00_allocate_sp_pool
1851 * This routine is called during initialization to allocate
1852 * memory for local srb_t.
1855 * ha = adapter block pointer.
1860 * Note: Sets the ref_count for non Null sp to one.
1863 qla2x00_allocate_sp_pool(scsi_qla_host_t *ha)
1868 ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
1869 mempool_free_slab, srb_cachep);
1870 if (ha->srb_mempool == NULL) {
1871 qla_printk(KERN_INFO, ha, "Unable to allocate SRB mempool.\n");
1872 rval = QLA_FUNCTION_FAILED;
1878 * This routine frees all adapter allocated memory.
1882 qla2x00_free_sp_pool( scsi_qla_host_t *ha)
1884 if (ha->srb_mempool) {
1885 mempool_destroy(ha->srb_mempool);
1886 ha->srb_mempool = NULL;
1890 /**************************************************************************
1892 * This kernel thread is a task that is schedule by the interrupt handler
1893 * to perform the background processing for interrupts.
1896 * This task always run in the context of a kernel thread. It
1897 * is kick-off by the driver's detect code and starts up
1898 * up one per adapter. It immediately goes to sleep and waits for
1899 * some fibre event. When either the interrupt handler or
1900 * the timer routine detects a event it will one of the task
1901 * bits then wake us up.
1902 **************************************************************************/
1904 qla2x00_do_dpc(void *data)
1906 DECLARE_MUTEX_LOCKED(sem);
1907 scsi_qla_host_t *ha;
1910 uint16_t next_loopid;
1912 ha = (scsi_qla_host_t *)data;
1916 daemonize("%s_dpc", ha->host_str);
1917 allow_signal(SIGHUP);
1919 ha->dpc_wait = &sem;
1921 set_user_nice(current, -20);
1925 complete(&ha->dpc_inited);
1928 DEBUG3(printk("qla2x00: DPC handler sleeping\n"));
1930 if (down_interruptible(&sem))
1933 if (ha->dpc_should_die)
1936 DEBUG3(printk("qla2x00: DPC handler waking up\n"));
1938 /* Initialization not yet finished. Don't do anything yet. */
1939 if (!ha->flags.init_done || ha->dpc_active)
1942 DEBUG3(printk("scsi(%ld): DPC handler\n", ha->host_no));
1946 if (ha->flags.mbox_busy) {
1951 if (test_and_clear_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) {
1953 DEBUG(printk("scsi(%ld): dpc: sched "
1954 "qla2x00_abort_isp ha = %p\n",
1956 if (!(test_and_set_bit(ABORT_ISP_ACTIVE,
1959 if (qla2x00_abort_isp(ha)) {
1960 /* failed. retry later */
1961 set_bit(ISP_ABORT_NEEDED,
1964 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
1966 DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
1970 if (test_and_clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) &&
1971 (!(test_and_set_bit(RESET_ACTIVE, &ha->dpc_flags)))) {
1973 DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
1976 qla2x00_rst_aen(ha);
1977 clear_bit(RESET_ACTIVE, &ha->dpc_flags);
1980 /* Retry each device up to login retry count */
1981 if ((test_and_clear_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
1982 !test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) &&
1983 atomic_read(&ha->loop_state) != LOOP_DOWN) {
1985 DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
1989 list_for_each_entry(fcport, &ha->fcports, list) {
1990 if (fcport->port_type != FCT_TARGET)
1994 * If the port is not ONLINE then try to login
1995 * to it if we haven't run out of retries.
1997 if (atomic_read(&fcport->state) != FCS_ONLINE &&
1998 fcport->login_retry) {
2000 fcport->login_retry--;
2001 if (fcport->flags & FCF_FABRIC_DEVICE) {
2004 ha->isp_ops.fabric_logout(
2005 ha, fcport->loop_id);
2006 status = qla2x00_fabric_login(
2007 ha, fcport, &next_loopid);
2010 qla2x00_local_device_login(
2011 ha, fcport->loop_id);
2013 if (status == QLA_SUCCESS) {
2014 fcport->old_loop_id = fcport->loop_id;
2016 DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n",
2017 ha->host_no, fcport->loop_id));
2019 fcport->port_login_retry_count =
2020 ha->port_down_retry_count * PORT_RETRY_TIME;
2021 atomic_set(&fcport->state, FCS_ONLINE);
2022 atomic_set(&fcport->port_down_timer,
2023 ha->port_down_retry_count * PORT_RETRY_TIME);
2025 fcport->login_retry = 0;
2026 } else if (status == 1) {
2027 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
2028 /* retry the login again */
2029 DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n",
2031 fcport->login_retry, fcport->loop_id));
2033 fcport->login_retry = 0;
2036 if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
2039 DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
2043 if ((test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags)) &&
2044 atomic_read(&ha->loop_state) != LOOP_DOWN) {
2046 clear_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags);
2047 DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n",
2050 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
2052 DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n",
2056 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
2058 DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
2061 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE,
2064 qla2x00_loop_resync(ha);
2066 clear_bit(LOOP_RESYNC_ACTIVE, &ha->dpc_flags);
2069 DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
2073 if (test_and_clear_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags)) {
2075 DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n",
2078 qla2x00_rescan_fcports(ha);
2080 DEBUG(printk("scsi(%ld): Rescan flagged fcports..."
2085 if (!ha->interrupts_on)
2086 ha->isp_ops.enable_intrs(ha);
2089 } /* End of while(1) */
2091 DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha->host_no));
2094 * Make sure that nobody tries to wake us up again.
2096 ha->dpc_wait = NULL;
2099 complete_and_exit(&ha->dpc_exited, 0);
2104 * Processes asynchronous reset.
2107 * ha = adapter block pointer.
2110 qla2x00_rst_aen(scsi_qla_host_t *ha)
2112 if (ha->flags.online && !ha->flags.reset_active &&
2113 !atomic_read(&ha->loop_down_timer) &&
2114 !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
2116 clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
2119 * Issue marker command only when we are going to start
2122 ha->marker_needed = 1;
2123 } while (!atomic_read(&ha->loop_down_timer) &&
2124 (test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags)));
2130 * This routine will allocate SP from the free queue
2137 qla2x00_get_new_sp(scsi_qla_host_t *ha)
2141 sp = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
2143 atomic_set(&sp->ref_count, 1);
2148 qla2x00_sp_free_dma(scsi_qla_host_t *ha, srb_t *sp)
2150 struct scsi_cmnd *cmd = sp->cmd;
2152 if (sp->flags & SRB_DMA_VALID) {
2154 dma_unmap_sg(&ha->pdev->dev, cmd->request_buffer,
2155 cmd->use_sg, cmd->sc_data_direction);
2156 } else if (cmd->request_bufflen) {
2157 dma_unmap_single(&ha->pdev->dev, sp->dma_handle,
2158 cmd->request_bufflen, cmd->sc_data_direction);
2160 sp->flags &= ~SRB_DMA_VALID;
2165 qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *sp)
2167 struct scsi_cmnd *cmd = sp->cmd;
2169 qla2x00_sp_free_dma(ha, sp);
2172 mempool_free(sp, ha->srb_mempool);
2174 cmd->scsi_done(cmd);
2177 /**************************************************************************
2183 * Context: Interrupt
2184 ***************************************************************************/
2186 qla2x00_timer(scsi_qla_host_t *ha)
2188 unsigned long cpu_flags = 0;
2196 * Ports - Port down timer.
2198 * Whenever, a port is in the LOST state we start decrementing its port
2199 * down timer every second until it reaches zero. Once it reaches zero
2200 * the port it marked DEAD.
2203 list_for_each_entry(fcport, &ha->fcports, list) {
2204 if (fcport->port_type != FCT_TARGET)
2207 if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) {
2209 if (atomic_read(&fcport->port_down_timer) == 0)
2212 if (atomic_dec_and_test(&fcport->port_down_timer) != 0)
2213 atomic_set(&fcport->state, FCS_DEVICE_DEAD);
2215 DEBUG(printk("scsi(%ld): fcport-%d - port retry count: "
2218 t, atomic_read(&fcport->port_down_timer)));
2221 } /* End of for fcport */
2224 /* Loop down handler. */
2225 if (atomic_read(&ha->loop_down_timer) > 0 &&
2226 !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)) && ha->flags.online) {
2228 if (atomic_read(&ha->loop_down_timer) ==
2229 ha->loop_down_abort_time) {
2231 DEBUG(printk("scsi(%ld): Loop Down - aborting the "
2232 "queues before time expire\n",
2235 if (!IS_QLA2100(ha) && ha->link_down_timeout)
2236 atomic_set(&ha->loop_state, LOOP_DEAD);
2238 /* Schedule an ISP abort to return any tape commands. */
2239 spin_lock_irqsave(&ha->hardware_lock, cpu_flags);
2240 for (index = 1; index < MAX_OUTSTANDING_COMMANDS;
2244 sp = ha->outstanding_cmds[index];
2248 if (!(sfcp->flags & FCF_TAPE_PRESENT))
2251 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2254 spin_unlock_irqrestore(&ha->hardware_lock, cpu_flags);
2256 set_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags);
2260 /* if the loop has been down for 4 minutes, reinit adapter */
2261 if (atomic_dec_and_test(&ha->loop_down_timer) != 0) {
2262 DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - "
2263 "restarting queues.\n",
2266 set_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags);
2269 if (!(ha->device_flags & DFLG_NO_CABLE)) {
2270 DEBUG(printk("scsi(%ld): Loop down - "
2273 qla_printk(KERN_WARNING, ha,
2274 "Loop down - aborting ISP.\n");
2276 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2279 DEBUG3(printk("scsi(%ld): Loop Down - seconds remainning %d\n",
2281 atomic_read(&ha->loop_down_timer)));
2284 /* Schedule the DPC routine if needed */
2285 if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) ||
2286 test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) ||
2288 test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags) ||
2289 test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) ||
2290 test_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2291 ha->dpc_wait && !ha->dpc_active) {
2296 qla2x00_restart_timer(ha, WATCH_INTERVAL);
2299 /* XXX(hch): crude hack to emulate a down_timeout() */
2301 qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout)
2303 const unsigned int step = HZ/10;
2306 if (!down_trylock(sema))
2308 set_current_state(TASK_INTERRUPTIBLE);
2309 if (schedule_timeout(step))
2311 } while ((timeout -= step) > 0);
2317 * qla2x00_module_init - Module initialization.
2320 qla2x00_module_init(void)
2322 /* Allocate cache for SRBs. */
2323 srb_cachep = kmem_cache_create("qla2xxx_srbs", sizeof(srb_t), 0,
2324 SLAB_HWCACHE_ALIGN, NULL, NULL);
2325 if (srb_cachep == NULL) {
2327 "qla2xxx: Unable to allocate SRB cache...Failing load!\n");
2331 /* Derive version string. */
2332 strcpy(qla2x00_version_str, QLA2XXX_VERSION);
2334 strcat(qla2x00_version_str, "-debug");
2336 qla2xxx_transport_template =
2337 fc_attach_transport(&qla2xxx_transport_functions);
2338 if (!qla2xxx_transport_template)
2341 printk(KERN_INFO "QLogic Fibre Channel HBA Driver\n");
2346 * qla2x00_module_exit - Module cleanup.
2349 qla2x00_module_exit(void)
2351 kmem_cache_destroy(srb_cachep);
2352 fc_release_transport(qla2xxx_transport_template);
2355 module_init(qla2x00_module_init);
2356 module_exit(qla2x00_module_exit);
2358 MODULE_AUTHOR("QLogic Corporation");
2359 MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
2360 MODULE_LICENSE("GPL");
2361 MODULE_VERSION(QLA2XXX_VERSION);