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_get_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_get_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;
474 id = cmd->device->id;
475 lun = cmd->device->lun;
476 serial = cmd->serial_number;
478 /* Check active list for command command. */
479 spin_lock(&ha->hardware_lock);
480 for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
481 sp = ha->outstanding_cmds[i];
489 DEBUG2(printk("%s(%ld): aborting sp %p from RISC. pid=%ld "
490 "sp->state=%x\n", __func__, ha->host_no, sp, serial,
492 DEBUG3(qla2x00_print_scsi_cmd(cmd);)
494 spin_unlock(&ha->hardware_lock);
495 if (qla2x00_abort_command(ha, sp)) {
496 DEBUG2(printk("%s(%ld): abort_command "
497 "mbx failed.\n", __func__, ha->host_no));
499 DEBUG3(printk("%s(%ld): abort_command "
500 "mbx success.\n", __func__, ha->host_no));
503 spin_lock(&ha->hardware_lock);
508 /* Wait for the command to be returned. */
509 if (ret == SUCCESS) {
510 spin_unlock(&ha->hardware_lock);
511 if (qla2x00_eh_wait_on_command(ha, cmd) != QLA_SUCCESS) {
512 qla_printk(KERN_ERR, ha,
513 "scsi(%ld:%d:%d): Abort handler timed out -- %lx "
514 "%x.\n", ha->host_no, id, lun, serial, ret);
516 spin_lock(&ha->hardware_lock);
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;
551 * Waiting for all commands for the designated target in the active
554 for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
555 spin_lock(&ha->hardware_lock);
556 sp = ha->outstanding_cmds[cnt];
559 spin_unlock(&ha->hardware_lock);
560 if (cmd->device->id == t) {
561 if (!qla2x00_eh_wait_on_command(ha, cmd)) {
567 spin_unlock(&ha->hardware_lock);
574 /**************************************************************************
575 * qla2xxx_eh_device_reset
578 * The device reset function will reset the target and abort any
579 * executing commands.
581 * NOTE: The use of SP is undefined within this context. Do *NOT*
582 * attempt to use this value, even if you determine it is
586 * cmd = Linux SCSI command packet of the command that cause the
590 * SUCCESS/FAILURE (defined as macro in scsi.h).
592 **************************************************************************/
594 qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
596 scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
597 fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
600 unsigned int id, lun;
601 unsigned long serial;
605 id = cmd->device->id;
606 lun = cmd->device->lun;
607 serial = cmd->serial_number;
609 sp = (srb_t *) CMD_SP(cmd);
613 qla_printk(KERN_INFO, ha,
614 "scsi(%ld:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, id, lun);
616 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
617 goto eh_dev_reset_done;
619 if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
620 if (qla2x00_device_reset(ha, fcport) == 0)
623 #if defined(LOGOUT_AFTER_DEVICE_RESET)
624 if (ret == SUCCESS) {
625 if (fcport->flags & FC_FABRIC_DEVICE) {
626 qla2x00_fabric_logout(ha, fcport->loop_id);
627 qla2x00_mark_device_lost(ha, fcport);
632 DEBUG2(printk(KERN_INFO
633 "%s failed: loop not ready\n",__func__);)
637 DEBUG3(printk("%s(%ld): device reset failed\n",
638 __func__, ha->host_no));
639 qla_printk(KERN_INFO, ha, "%s: device reset failed\n",
642 goto eh_dev_reset_done;
646 * If we are coming down the EH path, wait for all commands to
647 * complete for the device.
649 if (cmd->device->host->eh_active) {
650 if (qla2x00_eh_wait_for_pending_target_commands(ha, id))
654 DEBUG3(printk("%s(%ld): failed while waiting for "
655 "commands\n", __func__, ha->host_no));
656 qla_printk(KERN_INFO, ha,
657 "%s: failed while waiting for commands\n",
660 goto eh_dev_reset_done;
664 qla_printk(KERN_INFO, ha,
665 "scsi(%ld:%d:%d): DEVICE RESET SUCCEEDED.\n", ha->host_no, id, lun);
671 /**************************************************************************
672 * qla2x00_eh_wait_for_pending_commands
675 * Waits for all the commands to come back from the specified host.
678 * ha - pointer to scsi_qla_host structure.
685 **************************************************************************/
687 qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha)
692 struct scsi_cmnd *cmd;
697 * Waiting for all commands for the designated target in the active
700 for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
701 spin_lock(&ha->hardware_lock);
702 sp = ha->outstanding_cmds[cnt];
705 spin_unlock(&ha->hardware_lock);
706 status = qla2x00_eh_wait_on_command(ha, cmd);
711 spin_unlock(&ha->hardware_lock);
718 /**************************************************************************
719 * qla2xxx_eh_bus_reset
722 * The bus reset function will reset the bus and abort any executing
726 * cmd = Linux SCSI command packet of the command that cause the
730 * SUCCESS/FAILURE (defined as macro in scsi.h).
732 **************************************************************************/
734 qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
736 scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
737 fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
740 unsigned int id, lun;
741 unsigned long serial;
745 id = cmd->device->id;
746 lun = cmd->device->lun;
747 serial = cmd->serial_number;
749 sp = (srb_t *) CMD_SP(cmd);
753 qla_printk(KERN_INFO, ha,
754 "scsi(%ld:%d:%d): LOOP RESET ISSUED.\n", ha->host_no, id, lun);
756 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
757 DEBUG2(printk("%s failed:board disabled\n",__func__));
758 goto eh_bus_reset_done;
761 if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
762 if (qla2x00_loop_reset(ha) == QLA_SUCCESS)
766 goto eh_bus_reset_done;
768 /* Waiting for our command in done_queue to be returned to OS.*/
769 if (cmd->device->host->eh_active)
770 if (!qla2x00_eh_wait_for_pending_commands(ha))
774 qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
775 (ret == FAILED) ? "failed" : "succeded");
780 /**************************************************************************
781 * qla2xxx_eh_host_reset
784 * The reset function will reset the Adapter.
787 * cmd = Linux SCSI command packet of the command that cause the
791 * Either SUCCESS or FAILED.
794 **************************************************************************/
796 qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
798 scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
799 fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
802 unsigned int id, lun;
803 unsigned long serial;
807 id = cmd->device->id;
808 lun = cmd->device->lun;
809 serial = cmd->serial_number;
811 sp = (srb_t *) CMD_SP(cmd);
815 qla_printk(KERN_INFO, ha,
816 "scsi(%ld:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, id, lun);
818 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
819 goto eh_host_reset_lock;
822 * Fixme-may be dpc thread is active and processing
823 * loop_resync,so wait a while for it to
824 * be completed and then issue big hammer.Otherwise
825 * it may cause I/O failure as big hammer marks the
826 * devices as lost kicking of the port_down_timer
827 * while dpc is stuck for the mailbox to complete.
829 qla2x00_wait_for_loop_ready(ha);
830 set_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
831 if (qla2x00_abort_isp(ha)) {
832 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
833 /* failed. schedule dpc to try */
834 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
836 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
837 goto eh_host_reset_lock;
839 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
841 /* Waiting for our command in done_queue to be returned to OS.*/
842 if (qla2x00_eh_wait_for_pending_commands(ha))
846 qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
847 (ret == FAILED) ? "failed" : "succeded");
857 * ha = adapter block pointer.
863 qla2x00_loop_reset(scsi_qla_host_t *ha)
865 int status = QLA_SUCCESS;
866 struct fc_port *fcport;
868 if (ha->flags.enable_lip_reset) {
869 status = qla2x00_lip_reset(ha);
872 if (status == QLA_SUCCESS && ha->flags.enable_target_reset) {
873 list_for_each_entry(fcport, &ha->fcports, list) {
874 if (fcport->port_type != FCT_TARGET)
877 status = qla2x00_target_reset(ha, fcport);
878 if (status != QLA_SUCCESS)
883 if (status == QLA_SUCCESS &&
884 ((!ha->flags.enable_target_reset &&
885 !ha->flags.enable_lip_reset) ||
886 ha->flags.enable_lip_full_login)) {
888 status = qla2x00_full_login_lip(ha);
891 /* Issue marker command only when we are going to start the I/O */
892 ha->marker_needed = 1;
896 DEBUG2_3(printk("%s(%ld): **** FAILED ****\n",
901 DEBUG3(printk("%s(%ld): exiting normally.\n",
910 * qla2x00_device_reset
911 * Issue bus device reset message to the target.
914 * ha = adapter block pointer.
916 * TARGET_QUEUE_LOCK must be released.
917 * ADAPTER_STATE_LOCK must be released.
923 qla2x00_device_reset(scsi_qla_host_t *ha, fc_port_t *reset_fcport)
925 /* Abort Target command will clear Reservation */
926 return qla2x00_abort_target(reset_fcport);
930 qla2xxx_slave_alloc(struct scsi_device *sdev)
932 scsi_qla_host_t *ha = to_qla_host(sdev->host);
933 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
941 list_for_each_entry(fcport, &ha->fcports, list) {
942 if (rport->port_name ==
943 be64_to_cpu(*(uint64_t *)fcport->port_name)) {
951 sdev->hostdata = fcport;
957 qla2xxx_slave_configure(struct scsi_device *sdev)
959 scsi_qla_host_t *ha = to_qla_host(sdev->host);
960 struct fc_rport *rport = starget_to_rport(sdev->sdev_target);
962 if (sdev->tagged_supported)
963 scsi_activate_tcq(sdev, 32);
965 scsi_deactivate_tcq(sdev, 32);
967 rport->dev_loss_tmo = ha->port_down_retry_count + 5;
973 qla2xxx_slave_destroy(struct scsi_device *sdev)
975 sdev->hostdata = NULL;
979 * qla2x00_config_dma_addressing() - Configure OS DMA addressing method.
982 * At exit, the @ha's flags.enable_64bit_addressing set to indicated
983 * supported addressing method.
986 qla2x00_config_dma_addressing(scsi_qla_host_t *ha)
988 /* Assume 32bit DMA address */
989 ha->flags.enable_64bit_addressing = 0;
990 ha->calc_request_entries = qla2x00_calc_iocbs_32;
991 ha->build_scsi_iocbs = qla2x00_build_scsi_iocbs_32;
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->calc_request_entries = qla2x00_calc_iocbs_64;
1001 ha->build_scsi_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 * PCI driver interface
1091 int qla2x00_probe_one(struct pci_dev *pdev, struct qla_board_info *brd_info)
1094 device_reg_t __iomem *reg;
1095 struct Scsi_Host *host;
1096 scsi_qla_host_t *ha;
1097 unsigned long flags = 0;
1098 unsigned long wait_switch = 0;
1103 if (pci_enable_device(pdev))
1106 host = scsi_host_alloc(&qla2x00_driver_template,
1107 sizeof(scsi_qla_host_t));
1110 "qla2xxx: Couldn't allocate host from scsi layer!\n");
1111 goto probe_disable_device;
1114 /* Clear our data area */
1115 ha = (scsi_qla_host_t *)host->hostdata;
1116 memset(ha, 0, sizeof(scsi_qla_host_t));
1120 ha->host_no = host->host_no;
1121 ha->brd_info = brd_info;
1122 sprintf(ha->host_str, "%s_%ld", ha->brd_info->drv_name, ha->host_no);
1124 /* Configure PCI I/O space */
1125 ret = qla2x00_iospace_config(ha);
1127 goto probe_alloc_failed;
1130 /* Sanitize the information from PCI BIOS. */
1131 host->irq = pdev->irq;
1133 qla_printk(KERN_INFO, ha,
1134 "Found an %s, irq %d, iobase 0x%p\n", ha->brd_info->isp_name,
1135 host->irq, ha->iobase);
1137 spin_lock_init(&ha->hardware_lock);
1139 ha->prev_topology = 0;
1140 ha->ports = MAX_BUSES;
1142 if (IS_QLA2100(ha)) {
1143 host->max_id = MAX_TARGETS_2100;
1144 ha->mbx_count = MAILBOX_REGISTER_COUNT_2100;
1145 ha->request_q_length = REQUEST_ENTRY_CNT_2100;
1146 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1147 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1148 host->sg_tablesize = 32;
1149 } else if (IS_QLA2200(ha)) {
1150 host->max_id = MAX_TARGETS_2200;
1151 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1152 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1153 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1154 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1155 } else /*if (IS_QLA2300(ha))*/ {
1156 host->max_id = MAX_TARGETS_2200;
1157 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1158 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1159 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1160 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1162 host->can_queue = ha->request_q_length + 128;
1164 /* load the F/W, read paramaters, and init the H/W */
1165 ha->instance = num_hosts;
1167 init_MUTEX(&ha->mbx_cmd_sem);
1168 init_MUTEX_LOCKED(&ha->mbx_intr_sem);
1170 INIT_LIST_HEAD(&ha->list);
1171 INIT_LIST_HEAD(&ha->fcports);
1172 INIT_LIST_HEAD(&ha->rscn_fcports);
1175 * These locks are used to prevent more than one CPU
1176 * from modifying the queue at the same time. The
1177 * higher level "host_lock" will reduce most
1178 * contention for these locks.
1180 spin_lock_init(&ha->mbx_reg_lock);
1183 init_completion(&ha->dpc_inited);
1184 init_completion(&ha->dpc_exited);
1186 qla2x00_config_dma_addressing(ha);
1187 if (qla2x00_mem_alloc(ha)) {
1188 qla_printk(KERN_WARNING, ha,
1189 "[ERROR] Failed to allocate memory for adapter\n");
1191 goto probe_alloc_failed;
1194 pci_set_drvdata(pdev, ha);
1195 host->this_id = 255;
1196 host->cmd_per_lun = 3;
1197 host->unique_id = ha->instance;
1198 host->max_cmd_len = MAX_CMDSZ;
1199 host->max_channel = ha->ports - 1;
1200 host->max_lun = MAX_LUNS;
1201 host->transportt = qla2xxx_transport_template;
1202 if (scsi_add_host(host, &pdev->dev))
1203 goto probe_alloc_failed;
1205 qla2x00_alloc_sysfs_attr(ha);
1207 if (qla2x00_initialize_adapter(ha) &&
1208 !(ha->device_flags & DFLG_NO_CABLE)) {
1210 qla_printk(KERN_WARNING, ha,
1211 "Failed to initialize adapter\n");
1213 DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
1214 "Adapter flags %x.\n",
1215 ha->host_no, ha->device_flags));
1220 qla2x00_init_host_attr(ha);
1223 * Startup the kernel thread for this host adapter
1225 ha->dpc_should_die = 0;
1226 ha->dpc_pid = kernel_thread(qla2x00_do_dpc, ha, 0);
1227 if (ha->dpc_pid < 0) {
1228 qla_printk(KERN_WARNING, ha,
1229 "Unable to start DPC thread!\n");
1233 wait_for_completion(&ha->dpc_inited);
1235 if (IS_QLA2100(ha) || IS_QLA2200(ha))
1236 ret = request_irq(host->irq, qla2100_intr_handler,
1237 SA_INTERRUPT|SA_SHIRQ, ha->brd_info->drv_name, ha);
1239 ret = request_irq(host->irq, qla2300_intr_handler,
1240 SA_INTERRUPT|SA_SHIRQ, ha->brd_info->drv_name, ha);
1242 qla_printk(KERN_WARNING, ha,
1243 "Failed to reserve interrupt %d already in use.\n",
1248 /* Initialized the timer */
1249 qla2x00_start_timer(ha, qla2x00_timer, WATCH_INTERVAL);
1251 DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
1256 /* Disable ISP interrupts. */
1257 qla2x00_disable_intrs(ha);
1259 /* Ensure mailbox registers are free. */
1260 spin_lock_irqsave(&ha->hardware_lock, flags);
1261 WRT_REG_WORD(®->semaphore, 0);
1262 WRT_REG_WORD(®->hccr, HCCR_CLR_RISC_INT);
1263 WRT_REG_WORD(®->hccr, HCCR_CLR_HOST_INT);
1265 /* Enable proper parity */
1266 if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) {
1269 WRT_REG_WORD(®->hccr, (HCCR_ENABLE_PARITY + 0x1));
1271 /* SRAM, Instruction RAM and GP RAM parity */
1272 WRT_REG_WORD(®->hccr, (HCCR_ENABLE_PARITY + 0x7));
1274 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1276 /* Enable chip interrupts. */
1277 qla2x00_enable_intrs(ha);
1281 * Wait around max loop_reset_delay secs for the devices to come
1282 * on-line. We don't want Linux scanning before we are ready.
1285 for (wait_switch = jiffies + (ha->loop_reset_delay * HZ);
1286 time_before(jiffies,wait_switch) &&
1287 !(ha->device_flags & (DFLG_NO_CABLE | DFLG_FABRIC_DEVICES))
1288 && (ha->device_flags & SWITCH_FOUND) ;) {
1290 qla2x00_check_fabric_devices(ha);
1295 ha->flags.init_done = 1;
1298 qla_printk(KERN_INFO, ha, "\n"
1299 " QLogic Fibre Channel HBA Driver: %s\n"
1301 " %s: %s @ %s hdma%c, host#=%ld, fw=%s\n", qla2x00_version_str,
1302 ha->model_number, ha->model_desc ? ha->model_desc: "",
1303 ha->brd_info->isp_name, qla2x00_get_pci_info_str(ha, pci_info),
1304 pci_name(ha->pdev), ha->flags.enable_64bit_addressing ? '+': '-',
1305 ha->host_no, qla2x00_get_fw_version_str(ha, fw_str));
1307 /* Go with fc_rport registration. */
1308 list_for_each_entry(fcport, &ha->fcports, list)
1309 qla2x00_reg_remote_port(ha, fcport);
1314 fc_remove_host(ha->host);
1316 scsi_remove_host(host);
1319 qla2x00_free_device(ha);
1321 scsi_host_put(host);
1323 probe_disable_device:
1324 pci_disable_device(pdev);
1328 EXPORT_SYMBOL_GPL(qla2x00_probe_one);
1330 void qla2x00_remove_one(struct pci_dev *pdev)
1332 scsi_qla_host_t *ha;
1334 ha = pci_get_drvdata(pdev);
1336 qla2x00_free_sysfs_attr(ha);
1338 fc_remove_host(ha->host);
1340 scsi_remove_host(ha->host);
1342 qla2x00_free_device(ha);
1344 scsi_host_put(ha->host);
1346 pci_set_drvdata(pdev, NULL);
1348 EXPORT_SYMBOL_GPL(qla2x00_remove_one);
1351 qla2x00_free_device(scsi_qla_host_t *ha)
1355 /* Abort any outstanding IO descriptors. */
1356 if (!IS_QLA2100(ha) && !IS_QLA2200(ha))
1357 qla2x00_cancel_io_descriptors(ha);
1359 /* turn-off interrupts on the card */
1360 if (ha->interrupts_on)
1361 qla2x00_disable_intrs(ha);
1364 if (ha->timer_active)
1365 qla2x00_stop_timer(ha);
1367 /* Kill the kernel thread for this host */
1368 if (ha->dpc_pid >= 0) {
1369 ha->dpc_should_die = 1;
1371 ret = kill_proc(ha->dpc_pid, SIGHUP, 1);
1373 qla_printk(KERN_ERR, ha,
1374 "Unable to signal DPC thread -- (%d)\n", ret);
1376 /* TODO: SOMETHING MORE??? */
1378 wait_for_completion(&ha->dpc_exited);
1382 qla2x00_mem_free(ha);
1385 ha->flags.online = 0;
1387 /* Detach interrupts */
1389 free_irq(ha->pdev->irq, ha);
1391 /* release io space registers */
1393 iounmap(ha->iobase);
1394 pci_release_regions(ha->pdev);
1396 pci_disable_device(ha->pdev);
1400 * qla2x00_mark_device_lost Updates fcport state when device goes offline.
1402 * Input: ha = adapter block pointer. fcport = port structure pointer.
1408 void qla2x00_mark_device_lost(scsi_qla_host_t *ha, fc_port_t *fcport,
1411 if (atomic_read(&fcport->state) == FCS_ONLINE && fcport->rport)
1412 fc_remote_port_block(fcport->rport);
1414 * We may need to retry the login, so don't change the state of the
1415 * port but do the retries.
1417 if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD)
1418 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1423 if (fcport->login_retry == 0) {
1424 fcport->login_retry = ha->login_retry_count;
1425 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
1427 DEBUG(printk("scsi(%ld): Port login retry: "
1428 "%02x%02x%02x%02x%02x%02x%02x%02x, "
1429 "id = 0x%04x retry cnt=%d\n",
1431 fcport->port_name[0],
1432 fcport->port_name[1],
1433 fcport->port_name[2],
1434 fcport->port_name[3],
1435 fcport->port_name[4],
1436 fcport->port_name[5],
1437 fcport->port_name[6],
1438 fcport->port_name[7],
1440 fcport->login_retry));
1445 * qla2x00_mark_all_devices_lost
1446 * Updates fcport state when device goes offline.
1449 * ha = adapter block pointer.
1450 * fcport = port structure pointer.
1458 qla2x00_mark_all_devices_lost(scsi_qla_host_t *ha)
1462 list_for_each_entry(fcport, &ha->fcports, list) {
1463 if (fcport->port_type != FCT_TARGET)
1467 * No point in marking the device as lost, if the device is
1470 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
1472 if (atomic_read(&fcport->state) == FCS_ONLINE && fcport->rport)
1473 fc_remote_port_block(fcport->rport);
1474 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1480 * Allocates adapter memory.
1487 qla2x00_mem_alloc(scsi_qla_host_t *ha)
1495 * This will loop only once if everything goes well, else some
1496 * number of retries will be performed to get around a kernel
1497 * bug where available mem is not allocated until after a
1498 * little delay and a retry.
1500 ha->request_ring = dma_alloc_coherent(&ha->pdev->dev,
1501 (ha->request_q_length + 1) * sizeof(request_t),
1502 &ha->request_dma, GFP_KERNEL);
1503 if (ha->request_ring == NULL) {
1504 qla_printk(KERN_WARNING, ha,
1505 "Memory Allocation failed - request_ring\n");
1507 qla2x00_mem_free(ha);
1513 ha->response_ring = dma_alloc_coherent(&ha->pdev->dev,
1514 (ha->response_q_length + 1) * sizeof(response_t),
1515 &ha->response_dma, GFP_KERNEL);
1516 if (ha->response_ring == NULL) {
1517 qla_printk(KERN_WARNING, ha,
1518 "Memory Allocation failed - response_ring\n");
1520 qla2x00_mem_free(ha);
1526 ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
1527 &ha->gid_list_dma, GFP_KERNEL);
1528 if (ha->gid_list == NULL) {
1529 qla_printk(KERN_WARNING, ha,
1530 "Memory Allocation failed - gid_list\n");
1532 qla2x00_mem_free(ha);
1538 ha->rlc_rsp = dma_alloc_coherent(&ha->pdev->dev,
1539 sizeof(rpt_lun_cmd_rsp_t), &ha->rlc_rsp_dma, GFP_KERNEL);
1540 if (ha->rlc_rsp == NULL) {
1541 qla_printk(KERN_WARNING, ha,
1542 "Memory Allocation failed - rlc");
1544 qla2x00_mem_free(ha);
1550 snprintf(name, sizeof(name), "qla2xxx_%ld", ha->host_no);
1551 ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
1552 DMA_POOL_SIZE, 8, 0);
1553 if (ha->s_dma_pool == NULL) {
1554 qla_printk(KERN_WARNING, ha,
1555 "Memory Allocation failed - s_dma_pool\n");
1557 qla2x00_mem_free(ha);
1563 /* get consistent memory allocated for init control block */
1564 ha->init_cb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1566 if (ha->init_cb == NULL) {
1567 qla_printk(KERN_WARNING, ha,
1568 "Memory Allocation failed - init_cb\n");
1570 qla2x00_mem_free(ha);
1575 memset(ha->init_cb, 0, sizeof(init_cb_t));
1577 /* Get consistent memory allocated for Get Port Database cmd */
1578 ha->iodesc_pd = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1579 &ha->iodesc_pd_dma);
1580 if (ha->iodesc_pd == NULL) {
1582 qla_printk(KERN_WARNING, ha,
1583 "Memory Allocation failed - iodesc_pd\n");
1585 qla2x00_mem_free(ha);
1590 memset(ha->iodesc_pd, 0, PORT_DATABASE_SIZE);
1592 /* Allocate ioctl related memory. */
1593 if (qla2x00_alloc_ioctl_mem(ha)) {
1594 qla_printk(KERN_WARNING, ha,
1595 "Memory Allocation failed - ioctl_mem\n");
1597 qla2x00_mem_free(ha);
1603 if (qla2x00_allocate_sp_pool(ha)) {
1604 qla_printk(KERN_WARNING, ha,
1605 "Memory Allocation failed - "
1606 "qla2x00_allocate_sp_pool()\n");
1608 qla2x00_mem_free(ha);
1614 /* Allocate memory for SNS commands */
1615 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
1616 /* Get consistent memory allocated for SNS commands */
1617 ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev,
1618 sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma,
1620 if (ha->sns_cmd == NULL) {
1622 qla_printk(KERN_WARNING, ha,
1623 "Memory Allocation failed - sns_cmd\n");
1625 qla2x00_mem_free(ha);
1630 memset(ha->sns_cmd, 0, sizeof(struct sns_cmd_pkt));
1632 /* Get consistent memory allocated for MS IOCB */
1633 ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1635 if (ha->ms_iocb == NULL) {
1637 qla_printk(KERN_WARNING, ha,
1638 "Memory Allocation failed - ms_iocb\n");
1640 qla2x00_mem_free(ha);
1645 memset(ha->ms_iocb, 0, sizeof(ms_iocb_entry_t));
1648 * Get consistent memory allocated for CT SNS
1651 ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev,
1652 sizeof(struct ct_sns_pkt), &ha->ct_sns_dma,
1654 if (ha->ct_sns == NULL) {
1656 qla_printk(KERN_WARNING, ha,
1657 "Memory Allocation failed - ct_sns\n");
1659 qla2x00_mem_free(ha);
1664 memset(ha->ct_sns, 0, sizeof(struct ct_sns_pkt));
1667 /* Done all allocations without any error. */
1670 } while (retry-- && status != 0);
1674 "%s(): **** FAILED ****\n", __func__);
1682 * Frees all adapter allocated memory.
1685 * ha = adapter block pointer.
1688 qla2x00_mem_free(scsi_qla_host_t *ha)
1690 struct list_head *fcpl, *fcptemp;
1692 unsigned long wtime;/* max wait time if mbx cmd is busy. */
1696 DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__));
1700 /* Make sure all other threads are stopped. */
1702 while (ha->dpc_wait && wtime) {
1703 set_current_state(TASK_INTERRUPTIBLE);
1704 wtime = schedule_timeout(wtime);
1707 /* free ioctl memory */
1708 qla2x00_free_ioctl_mem(ha);
1711 qla2x00_free_sp_pool(ha);
1714 dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
1715 ha->sns_cmd, ha->sns_cmd_dma);
1718 dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
1719 ha->ct_sns, ha->ct_sns_dma);
1722 dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
1725 dma_pool_free(ha->s_dma_pool, ha->iodesc_pd, ha->iodesc_pd_dma);
1728 dma_pool_free(ha->s_dma_pool, ha->init_cb, ha->init_cb_dma);
1731 dma_pool_destroy(ha->s_dma_pool);
1734 dma_free_coherent(&ha->pdev->dev,
1735 sizeof(rpt_lun_cmd_rsp_t), ha->rlc_rsp,
1739 dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
1742 if (ha->response_ring)
1743 dma_free_coherent(&ha->pdev->dev,
1744 (ha->response_q_length + 1) * sizeof(response_t),
1745 ha->response_ring, ha->response_dma);
1747 if (ha->request_ring)
1748 dma_free_coherent(&ha->pdev->dev,
1749 (ha->request_q_length + 1) * sizeof(request_t),
1750 ha->request_ring, ha->request_dma);
1753 ha->sns_cmd_dma = 0;
1757 ha->ms_iocb_dma = 0;
1758 ha->iodesc_pd = NULL;
1759 ha->iodesc_pd_dma = 0;
1761 ha->init_cb_dma = 0;
1763 ha->s_dma_pool = NULL;
1766 ha->rlc_rsp_dma = 0;
1767 ha->gid_list = NULL;
1768 ha->gid_list_dma = 0;
1770 ha->response_ring = NULL;
1771 ha->response_dma = 0;
1772 ha->request_ring = NULL;
1773 ha->request_dma = 0;
1775 list_for_each_safe(fcpl, fcptemp, &ha->fcports) {
1776 fcport = list_entry(fcpl, fc_port_t, list);
1779 list_del_init(&fcport->list);
1782 INIT_LIST_HEAD(&ha->fcports);
1785 free_pages((unsigned long)ha->fw_dump, ha->fw_dump_order);
1787 if (ha->fw_dump_buffer)
1788 vfree(ha->fw_dump_buffer);
1791 ha->fw_dump_reading = 0;
1792 ha->fw_dump_buffer = NULL;
1796 * qla2x00_allocate_sp_pool
1797 * This routine is called during initialization to allocate
1798 * memory for local srb_t.
1801 * ha = adapter block pointer.
1806 * Note: Sets the ref_count for non Null sp to one.
1809 qla2x00_allocate_sp_pool(scsi_qla_host_t *ha)
1814 ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
1815 mempool_free_slab, srb_cachep);
1816 if (ha->srb_mempool == NULL) {
1817 qla_printk(KERN_INFO, ha, "Unable to allocate SRB mempool.\n");
1818 rval = QLA_FUNCTION_FAILED;
1824 * This routine frees all adapter allocated memory.
1828 qla2x00_free_sp_pool( scsi_qla_host_t *ha)
1830 if (ha->srb_mempool) {
1831 mempool_destroy(ha->srb_mempool);
1832 ha->srb_mempool = NULL;
1836 /**************************************************************************
1838 * This kernel thread is a task that is schedule by the interrupt handler
1839 * to perform the background processing for interrupts.
1842 * This task always run in the context of a kernel thread. It
1843 * is kick-off by the driver's detect code and starts up
1844 * up one per adapter. It immediately goes to sleep and waits for
1845 * some fibre event. When either the interrupt handler or
1846 * the timer routine detects a event it will one of the task
1847 * bits then wake us up.
1848 **************************************************************************/
1850 qla2x00_do_dpc(void *data)
1852 DECLARE_MUTEX_LOCKED(sem);
1853 scsi_qla_host_t *ha;
1856 uint16_t next_loopid;
1858 ha = (scsi_qla_host_t *)data;
1862 daemonize("%s_dpc", ha->host_str);
1863 allow_signal(SIGHUP);
1865 ha->dpc_wait = &sem;
1867 set_user_nice(current, -20);
1871 complete(&ha->dpc_inited);
1874 DEBUG3(printk("qla2x00: DPC handler sleeping\n"));
1876 if (down_interruptible(&sem))
1879 if (ha->dpc_should_die)
1882 DEBUG3(printk("qla2x00: DPC handler waking up\n"));
1884 /* Initialization not yet finished. Don't do anything yet. */
1885 if (!ha->flags.init_done || ha->dpc_active)
1888 DEBUG3(printk("scsi(%ld): DPC handler\n", ha->host_no));
1892 if (ha->flags.mbox_busy) {
1897 if (test_and_clear_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) {
1899 DEBUG(printk("scsi(%ld): dpc: sched "
1900 "qla2x00_abort_isp ha = %p\n",
1902 if (!(test_and_set_bit(ABORT_ISP_ACTIVE,
1905 if (qla2x00_abort_isp(ha)) {
1906 /* failed. retry later */
1907 set_bit(ISP_ABORT_NEEDED,
1910 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
1912 DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
1916 if (test_and_clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) &&
1917 (!(test_and_set_bit(RESET_ACTIVE, &ha->dpc_flags)))) {
1919 DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
1922 qla2x00_rst_aen(ha);
1923 clear_bit(RESET_ACTIVE, &ha->dpc_flags);
1926 /* Retry each device up to login retry count */
1927 if ((test_and_clear_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
1928 !test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) &&
1929 atomic_read(&ha->loop_state) != LOOP_DOWN) {
1931 DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
1935 list_for_each_entry(fcport, &ha->fcports, list) {
1936 if (fcport->port_type != FCT_TARGET)
1940 * If the port is not ONLINE then try to login
1941 * to it if we haven't run out of retries.
1943 if (atomic_read(&fcport->state) != FCS_ONLINE &&
1944 fcport->login_retry) {
1946 fcport->login_retry--;
1947 if (fcport->flags & FCF_FABRIC_DEVICE) {
1950 qla2x00_fabric_logout(
1953 status = qla2x00_fabric_login(
1954 ha, fcport, &next_loopid);
1957 qla2x00_local_device_login(
1958 ha, fcport->loop_id);
1960 if (status == QLA_SUCCESS) {
1961 fcport->old_loop_id = fcport->loop_id;
1963 DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n",
1964 ha->host_no, fcport->loop_id));
1966 fcport->port_login_retry_count =
1967 ha->port_down_retry_count * PORT_RETRY_TIME;
1968 atomic_set(&fcport->state, FCS_ONLINE);
1969 atomic_set(&fcport->port_down_timer,
1970 ha->port_down_retry_count * PORT_RETRY_TIME);
1972 fcport->login_retry = 0;
1973 } else if (status == 1) {
1974 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
1975 /* retry the login again */
1976 DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n",
1978 fcport->login_retry, fcport->loop_id));
1980 fcport->login_retry = 0;
1983 if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
1986 DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
1990 if ((test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags)) &&
1991 atomic_read(&ha->loop_state) != LOOP_DOWN) {
1993 clear_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags);
1994 DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n",
1997 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
1999 DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n",
2003 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
2005 DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
2008 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE,
2011 qla2x00_loop_resync(ha);
2013 clear_bit(LOOP_RESYNC_ACTIVE, &ha->dpc_flags);
2016 DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
2020 if (test_and_clear_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags)) {
2022 DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n",
2025 qla2x00_rescan_fcports(ha);
2027 DEBUG(printk("scsi(%ld): Rescan flagged fcports..."
2032 if (!ha->interrupts_on)
2033 qla2x00_enable_intrs(ha);
2036 } /* End of while(1) */
2038 DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha->host_no));
2041 * Make sure that nobody tries to wake us up again.
2043 ha->dpc_wait = NULL;
2046 complete_and_exit(&ha->dpc_exited, 0);
2051 * Processes asynchronous reset.
2054 * ha = adapter block pointer.
2057 qla2x00_rst_aen(scsi_qla_host_t *ha)
2059 if (ha->flags.online && !ha->flags.reset_active &&
2060 !atomic_read(&ha->loop_down_timer) &&
2061 !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
2063 clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
2066 * Issue marker command only when we are going to start
2069 ha->marker_needed = 1;
2070 } while (!atomic_read(&ha->loop_down_timer) &&
2071 (test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags)));
2077 * This routine will allocate SP from the free queue
2084 qla2x00_get_new_sp(scsi_qla_host_t *ha)
2088 sp = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
2090 atomic_set(&sp->ref_count, 1);
2095 qla2x00_sp_free_dma(scsi_qla_host_t *ha, srb_t *sp)
2097 struct scsi_cmnd *cmd = sp->cmd;
2099 if (sp->flags & SRB_DMA_VALID) {
2101 dma_unmap_sg(&ha->pdev->dev, cmd->request_buffer,
2102 cmd->use_sg, cmd->sc_data_direction);
2103 } else if (cmd->request_bufflen) {
2104 dma_unmap_single(&ha->pdev->dev, sp->dma_handle,
2105 cmd->request_bufflen, cmd->sc_data_direction);
2107 sp->flags &= ~SRB_DMA_VALID;
2112 qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *sp)
2114 struct scsi_cmnd *cmd = sp->cmd;
2116 qla2x00_sp_free_dma(ha, sp);
2119 mempool_free(sp, ha->srb_mempool);
2121 cmd->scsi_done(cmd);
2124 /**************************************************************************
2130 * Context: Interrupt
2131 ***************************************************************************/
2133 qla2x00_timer(scsi_qla_host_t *ha)
2135 unsigned long cpu_flags = 0;
2143 * Ports - Port down timer.
2145 * Whenever, a port is in the LOST state we start decrementing its port
2146 * down timer every second until it reaches zero. Once it reaches zero
2147 * the port it marked DEAD.
2150 list_for_each_entry(fcport, &ha->fcports, list) {
2151 if (fcport->port_type != FCT_TARGET)
2154 if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) {
2156 if (atomic_read(&fcport->port_down_timer) == 0)
2159 if (atomic_dec_and_test(&fcport->port_down_timer) != 0)
2160 atomic_set(&fcport->state, FCS_DEVICE_DEAD);
2162 DEBUG(printk("scsi(%ld): fcport-%d - port retry count: "
2165 t, atomic_read(&fcport->port_down_timer)));
2168 } /* End of for fcport */
2171 /* Loop down handler. */
2172 if (atomic_read(&ha->loop_down_timer) > 0 &&
2173 !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)) && ha->flags.online) {
2175 if (atomic_read(&ha->loop_down_timer) ==
2176 ha->loop_down_abort_time) {
2178 DEBUG(printk("scsi(%ld): Loop Down - aborting the "
2179 "queues before time expire\n",
2182 if (!IS_QLA2100(ha) && ha->link_down_timeout)
2183 atomic_set(&ha->loop_state, LOOP_DEAD);
2185 /* Schedule an ISP abort to return any tape commands. */
2186 spin_lock_irqsave(&ha->hardware_lock, cpu_flags);
2187 for (index = 1; index < MAX_OUTSTANDING_COMMANDS;
2191 sp = ha->outstanding_cmds[index];
2195 if (!(sfcp->flags & FCF_TAPE_PRESENT))
2198 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2201 spin_unlock_irqrestore(&ha->hardware_lock, cpu_flags);
2203 set_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags);
2207 /* if the loop has been down for 4 minutes, reinit adapter */
2208 if (atomic_dec_and_test(&ha->loop_down_timer) != 0) {
2209 DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - "
2210 "restarting queues.\n",
2213 set_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags);
2216 if (!(ha->device_flags & DFLG_NO_CABLE)) {
2217 DEBUG(printk("scsi(%ld): Loop down - "
2220 qla_printk(KERN_WARNING, ha,
2221 "Loop down - aborting ISP.\n");
2223 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2226 DEBUG3(printk("scsi(%ld): Loop Down - seconds remainning %d\n",
2228 atomic_read(&ha->loop_down_timer)));
2231 /* Schedule the DPC routine if needed */
2232 if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) ||
2233 test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) ||
2235 test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags) ||
2236 test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) ||
2237 test_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2238 ha->dpc_wait && !ha->dpc_active) {
2243 qla2x00_restart_timer(ha, WATCH_INTERVAL);
2246 /* XXX(hch): crude hack to emulate a down_timeout() */
2248 qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout)
2250 const unsigned int step = HZ/10;
2253 if (!down_trylock(sema))
2255 set_current_state(TASK_INTERRUPTIBLE);
2256 if (schedule_timeout(step))
2258 } while ((timeout -= step) > 0);
2264 * qla2x00_module_init - Module initialization.
2267 qla2x00_module_init(void)
2269 /* Allocate cache for SRBs. */
2270 srb_cachep = kmem_cache_create("qla2xxx_srbs", sizeof(srb_t), 0,
2271 SLAB_HWCACHE_ALIGN, NULL, NULL);
2272 if (srb_cachep == NULL) {
2274 "qla2xxx: Unable to allocate SRB cache...Failing load!\n");
2278 /* Derive version string. */
2279 strcpy(qla2x00_version_str, QLA2XXX_VERSION);
2281 strcat(qla2x00_version_str, "-debug");
2283 qla2xxx_transport_template =
2284 fc_attach_transport(&qla2xxx_transport_functions);
2285 if (!qla2xxx_transport_template)
2288 printk(KERN_INFO "QLogic Fibre Channel HBA Driver\n");
2293 * qla2x00_module_exit - Module cleanup.
2296 qla2x00_module_exit(void)
2298 kmem_cache_destroy(srb_cachep);
2299 fc_release_transport(qla2xxx_transport_template);
2302 module_init(qla2x00_module_init);
2303 module_exit(qla2x00_module_exit);
2305 MODULE_AUTHOR("QLogic Corporation");
2306 MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
2307 MODULE_LICENSE("GPL");
2308 MODULE_VERSION(QLA2XXX_VERSION);