2 * Device driver for the SYMBIOS/LSILOGIC 53C8XX and 53C1010 family
3 * of PCI-SCSI IO processors.
5 * Copyright (C) 1999-2001 Gerard Roudier <groudier@free.fr>
6 * Copyright (c) 2003-2005 Matthew Wilcox <matthew@wil.cx>
8 * This driver is derived from the Linux sym53c8xx driver.
9 * Copyright (C) 1998-2000 Gerard Roudier
11 * The sym53c8xx driver is derived from the ncr53c8xx driver that had been
12 * a port of the FreeBSD ncr driver to Linux-1.2.13.
14 * The original ncr driver has been written for 386bsd and FreeBSD by
15 * Wolfgang Stanglmeier <wolf@cologne.de>
16 * Stefan Esser <se@mi.Uni-Koeln.de>
17 * Copyright (C) 1994 Wolfgang Stanglmeier
19 * Other major contributions:
21 * NVRAM detection and reading.
22 * Copyright (C) 1997 Richard Waltham <dormouse@farsrobt.demon.co.uk>
24 *-----------------------------------------------------------------------------
26 * This program is free software; you can redistribute it and/or modify
27 * it under the terms of the GNU General Public License as published by
28 * the Free Software Foundation; either version 2 of the License, or
29 * (at your option) any later version.
31 * This program is distributed in the hope that it will be useful,
32 * but WITHOUT ANY WARRANTY; without even the implied warranty of
33 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
34 * GNU General Public License for more details.
36 * You should have received a copy of the GNU General Public License
37 * along with this program; if not, write to the Free Software
38 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
40 #include <linux/ctype.h>
41 #include <linux/init.h>
42 #include <linux/module.h>
43 #include <linux/moduleparam.h>
44 #include <linux/spinlock.h>
45 #include <scsi/scsi.h>
46 #include <scsi/scsi_tcq.h>
47 #include <scsi/scsi_device.h>
48 #include <scsi/scsi_transport.h>
51 #include "sym_nvram.h"
53 #define NAME53C "sym53c"
54 #define NAME53C8XX "sym53c8xx"
56 struct sym_driver_setup sym_driver_setup = SYM_LINUX_DRIVER_SETUP;
57 unsigned int sym_debug_flags = 0;
59 static char *excl_string;
60 static char *safe_string;
61 module_param_named(cmd_per_lun, sym_driver_setup.max_tag, ushort, 0);
62 module_param_named(burst, sym_driver_setup.burst_order, byte, 0);
63 module_param_named(led, sym_driver_setup.scsi_led, byte, 0);
64 module_param_named(diff, sym_driver_setup.scsi_diff, byte, 0);
65 module_param_named(irqm, sym_driver_setup.irq_mode, byte, 0);
66 module_param_named(buschk, sym_driver_setup.scsi_bus_check, byte, 0);
67 module_param_named(hostid, sym_driver_setup.host_id, byte, 0);
68 module_param_named(verb, sym_driver_setup.verbose, byte, 0);
69 module_param_named(debug, sym_debug_flags, uint, 0);
70 module_param_named(settle, sym_driver_setup.settle_delay, byte, 0);
71 module_param_named(nvram, sym_driver_setup.use_nvram, byte, 0);
72 module_param_named(excl, excl_string, charp, 0);
73 module_param_named(safe, safe_string, charp, 0);
75 MODULE_PARM_DESC(cmd_per_lun, "The maximum number of tags to use by default");
76 MODULE_PARM_DESC(burst, "Maximum burst. 0 to disable, 255 to read from registers");
77 MODULE_PARM_DESC(led, "Set to 1 to enable LED support");
78 MODULE_PARM_DESC(diff, "0 for no differential mode, 1 for BIOS, 2 for always, 3 for not GPIO3");
79 MODULE_PARM_DESC(irqm, "0 for open drain, 1 to leave alone, 2 for totem pole");
80 MODULE_PARM_DESC(buschk, "0 to not check, 1 for detach on error, 2 for warn on error");
81 MODULE_PARM_DESC(hostid, "The SCSI ID to use for the host adapters");
82 MODULE_PARM_DESC(verb, "0 for minimal verbosity, 1 for normal, 2 for excessive");
83 MODULE_PARM_DESC(debug, "Set bits to enable debugging");
84 MODULE_PARM_DESC(settle, "Settle delay in seconds. Default 3");
85 MODULE_PARM_DESC(nvram, "Option currently not used");
86 MODULE_PARM_DESC(excl, "List ioport addresses here to prevent controllers from being attached");
87 MODULE_PARM_DESC(safe, "Set other settings to a \"safe mode\"");
89 MODULE_LICENSE("GPL");
90 MODULE_VERSION(SYM_VERSION);
91 MODULE_AUTHOR("Matthew Wilcox <matthew@wil.cx>");
92 MODULE_DESCRIPTION("NCR, Symbios and LSI 8xx and 1010 PCI SCSI adapters");
94 static void sym2_setup_params(void)
96 char *p = excl_string;
99 while (p && (xi < 8)) {
101 int val = (int) simple_strtoul(p, &next_p, 0);
102 sym_driver_setup.excludes[xi++] = val;
107 if (*safe_string == 'y') {
108 sym_driver_setup.max_tag = 0;
109 sym_driver_setup.burst_order = 0;
110 sym_driver_setup.scsi_led = 0;
111 sym_driver_setup.scsi_diff = 1;
112 sym_driver_setup.irq_mode = 0;
113 sym_driver_setup.scsi_bus_check = 2;
114 sym_driver_setup.host_id = 7;
115 sym_driver_setup.verbose = 2;
116 sym_driver_setup.settle_delay = 10;
117 sym_driver_setup.use_nvram = 1;
118 } else if (*safe_string != 'n') {
119 printk(KERN_WARNING NAME53C8XX "Ignoring parameter %s"
120 " passed to safe option", safe_string);
125 static struct scsi_transport_template *sym2_transport_template = NULL;
128 * Driver private area in the SCSI command structure.
130 struct sym_ucmd { /* Override the SCSI pointer structure */
131 struct completion *eh_done; /* SCSI error handling */
134 #define SYM_UCMD_PTR(cmd) ((struct sym_ucmd *)(&(cmd)->SCp))
135 #define SYM_SOFTC_PTR(cmd) sym_get_hcb(cmd->device->host)
138 * Complete a pending CAM CCB.
140 void sym_xpt_done(struct sym_hcb *np, struct scsi_cmnd *cmd)
142 struct sym_ucmd *ucmd = SYM_UCMD_PTR(cmd);
143 BUILD_BUG_ON(sizeof(struct scsi_pointer) < sizeof(struct sym_ucmd));
146 complete(ucmd->eh_done);
153 * Tell the SCSI layer about a BUS RESET.
155 void sym_xpt_async_bus_reset(struct sym_hcb *np)
157 printf_notice("%s: SCSI BUS has been reset.\n", sym_name(np));
158 np->s.settle_time = jiffies + sym_driver_setup.settle_delay * HZ;
159 np->s.settle_time_valid = 1;
160 if (sym_verbose >= 2)
161 printf_info("%s: command processing suspended for %d seconds\n",
162 sym_name(np), sym_driver_setup.settle_delay);
166 * Tell the SCSI layer about a BUS DEVICE RESET message sent.
168 void sym_xpt_async_sent_bdr(struct sym_hcb *np, int target)
170 printf_notice("%s: TARGET %d has been reset.\n", sym_name(np), target);
174 * Choose the more appropriate CAM status if
175 * the IO encountered an extended error.
177 static int sym_xerr_cam_status(int cam_status, int x_status)
180 if (x_status & XE_PARITY_ERR)
181 cam_status = DID_PARITY;
182 else if (x_status &(XE_EXTRA_DATA|XE_SODL_UNRUN|XE_SWIDE_OVRUN))
183 cam_status = DID_ERROR;
184 else if (x_status & XE_BAD_PHASE)
185 cam_status = DID_ERROR;
187 cam_status = DID_ERROR;
193 * Build CAM result for a failed or auto-sensed IO.
195 void sym_set_cam_result_error(struct sym_hcb *np, struct sym_ccb *cp, int resid)
197 struct scsi_cmnd *cmd = cp->cmd;
198 u_int cam_status, scsi_status, drv_status;
202 scsi_status = cp->ssss_status;
204 if (cp->host_flags & HF_SENSE) {
205 scsi_status = cp->sv_scsi_status;
206 resid = cp->sv_resid;
207 if (sym_verbose && cp->sv_xerr_status)
208 sym_print_xerr(cmd, cp->sv_xerr_status);
209 if (cp->host_status == HS_COMPLETE &&
210 cp->ssss_status == S_GOOD &&
211 cp->xerr_status == 0) {
212 cam_status = sym_xerr_cam_status(DID_OK,
214 drv_status = DRIVER_SENSE;
216 * Bounce back the sense data to user.
218 memset(&cmd->sense_buffer, 0, sizeof(cmd->sense_buffer));
219 memcpy(cmd->sense_buffer, cp->sns_bbuf,
220 min(sizeof(cmd->sense_buffer),
221 (size_t)SYM_SNS_BBUF_LEN));
224 * If the device reports a UNIT ATTENTION condition
225 * due to a RESET condition, we should consider all
226 * disconnect CCBs for this unit as aborted.
230 p = (u_char *) cmd->sense_data;
231 if (p[0]==0x70 && p[2]==0x6 && p[12]==0x29)
232 sym_clear_tasks(np, DID_ABORT,
233 cp->target,cp->lun, -1);
238 * Error return from our internal request sense. This
239 * is bad: we must clear the contingent allegiance
240 * condition otherwise the device will always return
241 * BUSY. Use a big stick.
243 sym_reset_scsi_target(np, cmd->device->id);
244 cam_status = DID_ERROR;
246 } else if (cp->host_status == HS_COMPLETE) /* Bad SCSI status */
248 else if (cp->host_status == HS_SEL_TIMEOUT) /* Selection timeout */
249 cam_status = DID_NO_CONNECT;
250 else if (cp->host_status == HS_UNEXPECTED) /* Unexpected BUS FREE*/
251 cam_status = DID_ERROR;
252 else { /* Extended error */
254 sym_print_addr(cmd, "COMMAND FAILED (%x %x %x).\n",
255 cp->host_status, cp->ssss_status,
259 * Set the most appropriate value for CAM status.
261 cam_status = sym_xerr_cam_status(DID_ERROR, cp->xerr_status);
263 scsi_set_resid(cmd, resid);
264 cmd->result = (drv_status << 24) + (cam_status << 16) + scsi_status;
267 static int sym_scatter(struct sym_hcb *np, struct sym_ccb *cp, struct scsi_cmnd *cmd)
274 use_sg = scsi_dma_map(cmd);
276 struct scatterlist *sg;
277 struct sym_tcb *tp = &np->target[cp->target];
278 struct sym_tblmove *data;
280 if (use_sg > SYM_CONF_MAX_SG) {
285 data = &cp->phys.data[SYM_CONF_MAX_SG - use_sg];
287 scsi_for_each_sg(cmd, sg, use_sg, segment) {
288 dma_addr_t baddr = sg_dma_address(sg);
289 unsigned int len = sg_dma_len(sg);
291 if ((len & 1) && (tp->head.wval & EWS)) {
293 cp->odd_byte_adjustment++;
296 sym_build_sge(np, &data[segment], baddr, len);
307 * Queue a SCSI command.
309 static int sym_queue_command(struct sym_hcb *np, struct scsi_cmnd *cmd)
311 struct scsi_device *sdev = cmd->device;
318 * Retrieve the target descriptor.
320 tp = &np->target[sdev->id];
323 * Select tagged/untagged.
325 lp = sym_lp(tp, sdev->lun);
326 order = (lp && lp->s.reqtags) ? M_SIMPLE_TAG : 0;
331 cp = sym_get_ccb(np, cmd, order);
333 return 1; /* Means resource shortage */
334 sym_queue_scsiio(np, cmd, cp);
339 * Setup buffers and pointers that address the CDB.
341 static inline int sym_setup_cdb(struct sym_hcb *np, struct scsi_cmnd *cmd, struct sym_ccb *cp)
343 memcpy(cp->cdb_buf, cmd->cmnd, cmd->cmd_len);
345 cp->phys.cmd.addr = CCB_BA(cp, cdb_buf[0]);
346 cp->phys.cmd.size = cpu_to_scr(cmd->cmd_len);
352 * Setup pointers that address the data and start the I/O.
354 int sym_setup_data_and_start(struct sym_hcb *np, struct scsi_cmnd *cmd, struct sym_ccb *cp)
362 if (sym_setup_cdb(np, cmd, cp))
366 * No direction means no data.
368 dir = cmd->sc_data_direction;
369 if (dir != DMA_NONE) {
370 cp->segments = sym_scatter(np, cp, cmd);
371 if (cp->segments < 0) {
372 sym_set_cam_status(cmd, DID_ERROR);
377 * No segments means no data.
387 * Set the data pointer.
390 case DMA_BIDIRECTIONAL:
391 scmd_printk(KERN_INFO, cmd, "got DMA_BIDIRECTIONAL command");
392 sym_set_cam_status(cmd, DID_ERROR);
395 goalp = SCRIPTA_BA(np, data_out2) + 8;
396 lastp = goalp - 8 - (cp->segments * (2*4));
398 case DMA_FROM_DEVICE:
399 cp->host_flags |= HF_DATA_IN;
400 goalp = SCRIPTA_BA(np, data_in2) + 8;
401 lastp = goalp - 8 - (cp->segments * (2*4));
405 lastp = goalp = SCRIPTB_BA(np, no_data);
410 * Set all pointers values needed by SCRIPTS.
412 cp->phys.head.lastp = cpu_to_scr(lastp);
413 cp->phys.head.savep = cpu_to_scr(lastp);
414 cp->startp = cp->phys.head.savep;
415 cp->goalp = cpu_to_scr(goalp);
418 * When `#ifed 1', the code below makes the driver
419 * panic on the first attempt to write to a SCSI device.
420 * It is the first test we want to do after a driver
421 * change that does not seem obviously safe. :)
424 switch (cp->cdb_buf[0]) {
425 case 0x0A: case 0x2A: case 0xAA:
426 panic("XXXXXXXXXXXXX WRITE NOT YET ALLOWED XXXXXXXXXXXXXX\n");
436 sym_put_start_queue(np, cp);
440 sym_free_ccb(np, cp);
441 sym_xpt_done(np, cmd);
449 * Misused to keep the driver running when
450 * interrupts are not configured correctly.
452 static void sym_timer(struct sym_hcb *np)
454 unsigned long thistime = jiffies;
459 np->s.timer.expires = thistime + SYM_CONF_TIMER_INTERVAL;
460 add_timer(&np->s.timer);
463 * If we are resetting the ncr, wait for settle_time before
464 * clearing it. Then command processing will be resumed.
466 if (np->s.settle_time_valid) {
467 if (time_before_eq(np->s.settle_time, thistime)) {
468 if (sym_verbose >= 2 )
469 printk("%s: command processing resumed\n",
471 np->s.settle_time_valid = 0;
477 * Nothing to do for now, but that may come.
479 if (np->s.lasttime + 4*HZ < thistime) {
480 np->s.lasttime = thistime;
483 #ifdef SYM_CONF_PCIQ_MAY_MISS_COMPLETIONS
485 * Some way-broken PCI bridges may lead to
486 * completions being lost when the clearing
487 * of the INTFLY flag by the CPU occurs
488 * concurrently with the chip raising this flag.
489 * If this ever happen, lost completions will
498 * PCI BUS error handler.
500 void sym_log_bus_error(struct sym_hcb *np)
503 pci_read_config_word(np->s.device, PCI_STATUS, &pci_sts);
504 if (pci_sts & 0xf900) {
505 pci_write_config_word(np->s.device, PCI_STATUS, pci_sts);
506 printf("%s: PCI STATUS = 0x%04x\n",
507 sym_name(np), pci_sts & 0xf900);
512 * queuecommand method. Entered with the host adapter lock held and
513 * interrupts disabled.
515 static int sym53c8xx_queue_command(struct scsi_cmnd *cmd,
516 void (*done)(struct scsi_cmnd *))
518 struct sym_hcb *np = SYM_SOFTC_PTR(cmd);
519 struct sym_ucmd *ucp = SYM_UCMD_PTR(cmd);
522 cmd->scsi_done = done;
523 memset(ucp, 0, sizeof(*ucp));
526 * Shorten our settle_time if needed for
527 * this command not to time out.
529 if (np->s.settle_time_valid && cmd->timeout_per_command) {
530 unsigned long tlimit = jiffies + cmd->timeout_per_command;
531 tlimit -= SYM_CONF_TIMER_INTERVAL*2;
532 if (time_after(np->s.settle_time, tlimit)) {
533 np->s.settle_time = tlimit;
537 if (np->s.settle_time_valid)
538 return SCSI_MLQUEUE_HOST_BUSY;
540 sts = sym_queue_command(np, cmd);
542 return SCSI_MLQUEUE_HOST_BUSY;
547 * Linux entry point of the interrupt handler.
549 static irqreturn_t sym53c8xx_intr(int irq, void *dev_id)
551 struct Scsi_Host *shost = dev_id;
552 struct sym_data *sym_data = shost_priv(shost);
555 /* Avoid spinloop trying to handle interrupts on frozen device */
556 if (pci_channel_offline(sym_data->pdev))
559 if (DEBUG_FLAGS & DEBUG_TINY) printf_debug ("[");
561 spin_lock(shost->host_lock);
562 result = sym_interrupt(shost);
563 spin_unlock(shost->host_lock);
565 if (DEBUG_FLAGS & DEBUG_TINY) printf_debug ("]\n");
571 * Linux entry point of the timer handler
573 static void sym53c8xx_timer(unsigned long npref)
575 struct sym_hcb *np = (struct sym_hcb *)npref;
578 spin_lock_irqsave(np->s.host->host_lock, flags);
580 spin_unlock_irqrestore(np->s.host->host_lock, flags);
585 * What the eh thread wants us to perform.
587 #define SYM_EH_ABORT 0
588 #define SYM_EH_DEVICE_RESET 1
589 #define SYM_EH_BUS_RESET 2
590 #define SYM_EH_HOST_RESET 3
593 * Generic method for our eh processing.
594 * The 'op' argument tells what we have to do.
596 static int sym_eh_handler(int op, char *opname, struct scsi_cmnd *cmd)
598 struct sym_hcb *np = SYM_SOFTC_PTR(cmd);
599 struct sym_ucmd *ucmd = SYM_UCMD_PTR(cmd);
600 struct Scsi_Host *host = cmd->device->host;
601 struct pci_dev *pdev = np->s.device;
605 struct completion eh_done;
607 scmd_printk(KERN_WARNING, cmd, "%s operation started.\n", opname);
609 /* We may be in an error condition because the PCI bus
610 * went down. In this case, we need to wait until the
611 * PCI bus is reset, the card is reset, and only then
612 * proceed with the scsi error recovery. There's no
613 * point in hurrying; take a leisurely wait.
615 #define WAIT_FOR_PCI_RECOVERY 35
616 if (pci_channel_offline(pdev)) {
617 struct sym_data *sym_data = shost_priv(host);
618 struct completion *io_reset;
619 int finished_reset = 0;
620 init_completion(&eh_done);
621 spin_lock_irq(host->host_lock);
622 /* Make sure we didn't race */
623 if (pci_channel_offline(pdev)) {
624 if (!sym_data->io_reset)
625 sym_data->io_reset = &eh_done;
626 io_reset = sym_data->io_reset;
630 spin_unlock_irq(host->host_lock);
632 finished_reset = wait_for_completion_timeout(io_reset,
633 WAIT_FOR_PCI_RECOVERY*HZ);
638 spin_lock_irq(host->host_lock);
639 /* This one is queued in some place -> to wait for completion */
640 FOR_EACH_QUEUED_ELEMENT(&np->busy_ccbq, qp) {
641 struct sym_ccb *cp = sym_que_entry(qp, struct sym_ccb, link_ccbq);
642 if (cp->cmd == cmd) {
648 /* Try to proceed the operation we have been asked for */
652 sts = sym_abort_scsiio(np, cmd, 1);
654 case SYM_EH_DEVICE_RESET:
655 sts = sym_reset_scsi_target(np, cmd->device->id);
657 case SYM_EH_BUS_RESET:
658 sym_reset_scsi_bus(np, 1);
661 case SYM_EH_HOST_RESET:
662 sym_reset_scsi_bus(np, 0);
670 /* On error, restore everything and cross fingers :) */
675 init_completion(&eh_done);
676 ucmd->eh_done = &eh_done;
677 spin_unlock_irq(host->host_lock);
678 if (!wait_for_completion_timeout(&eh_done, 5*HZ)) {
679 ucmd->eh_done = NULL;
683 spin_unlock_irq(host->host_lock);
686 dev_warn(&cmd->device->sdev_gendev, "%s operation %s.\n", opname,
687 sts==0 ? "complete" :sts==-2 ? "timed-out" : "failed");
688 return sts ? SCSI_FAILED : SCSI_SUCCESS;
693 * Error handlers called from the eh thread (one thread per HBA).
695 static int sym53c8xx_eh_abort_handler(struct scsi_cmnd *cmd)
697 return sym_eh_handler(SYM_EH_ABORT, "ABORT", cmd);
700 static int sym53c8xx_eh_device_reset_handler(struct scsi_cmnd *cmd)
702 return sym_eh_handler(SYM_EH_DEVICE_RESET, "DEVICE RESET", cmd);
705 static int sym53c8xx_eh_bus_reset_handler(struct scsi_cmnd *cmd)
707 return sym_eh_handler(SYM_EH_BUS_RESET, "BUS RESET", cmd);
710 static int sym53c8xx_eh_host_reset_handler(struct scsi_cmnd *cmd)
712 return sym_eh_handler(SYM_EH_HOST_RESET, "HOST RESET", cmd);
716 * Tune device queuing depth, according to various limits.
718 static void sym_tune_dev_queuing(struct sym_tcb *tp, int lun, u_short reqtags)
720 struct sym_lcb *lp = sym_lp(tp, lun);
726 oldtags = lp->s.reqtags;
728 if (reqtags > lp->s.scdev_depth)
729 reqtags = lp->s.scdev_depth;
731 lp->s.reqtags = reqtags;
733 if (reqtags != oldtags) {
734 dev_info(&tp->starget->dev,
735 "tagged command queuing %s, command queue depth %d.\n",
736 lp->s.reqtags ? "enabled" : "disabled", reqtags);
740 static int sym53c8xx_slave_alloc(struct scsi_device *sdev)
742 struct sym_hcb *np = sym_get_hcb(sdev->host);
743 struct sym_tcb *tp = &np->target[sdev->id];
746 if (sdev->id >= SYM_CONF_MAX_TARGET || sdev->lun >= SYM_CONF_MAX_LUN)
749 tp->starget = sdev->sdev_target;
751 * Fail the device init if the device is flagged NOSCAN at BOOT in
752 * the NVRAM. This may speed up boot and maintain coherency with
753 * BIOS device numbering. Clearing the flag allows the user to
754 * rescan skipped devices later. We also return an error for
755 * devices not flagged for SCAN LUNS in the NVRAM since some single
756 * lun devices behave badly when asked for a non zero LUN.
759 if (tp->usrflags & SYM_SCAN_BOOT_DISABLED) {
760 tp->usrflags &= ~SYM_SCAN_BOOT_DISABLED;
761 starget_printk(KERN_INFO, tp->starget,
762 "Scan at boot disabled in NVRAM\n");
766 if (tp->usrflags & SYM_SCAN_LUNS_DISABLED) {
769 starget_printk(KERN_INFO, tp->starget,
770 "Multiple LUNs disabled in NVRAM\n");
773 lp = sym_alloc_lcb(np, sdev->id, sdev->lun);
777 spi_min_period(tp->starget) = tp->usr_period;
778 spi_max_width(tp->starget) = tp->usr_width;
784 * Linux entry point for device queue sizing.
786 static int sym53c8xx_slave_configure(struct scsi_device *sdev)
788 struct sym_hcb *np = sym_get_hcb(sdev->host);
789 struct sym_tcb *tp = &np->target[sdev->id];
790 struct sym_lcb *lp = sym_lp(tp, sdev->lun);
791 int reqtags, depth_to_use;
796 lp->curr_flags = lp->user_flags;
799 * Select queue depth from driver setup.
800 * Donnot use more than configured by user.
802 * Donnot use more than our maximum.
804 reqtags = sym_driver_setup.max_tag;
805 if (reqtags > tp->usrtags)
806 reqtags = tp->usrtags;
807 if (!sdev->tagged_supported)
809 if (reqtags > SYM_CONF_MAX_TAG)
810 reqtags = SYM_CONF_MAX_TAG;
811 depth_to_use = reqtags ? reqtags : 2;
812 scsi_adjust_queue_depth(sdev,
813 sdev->tagged_supported ? MSG_SIMPLE_TAG : 0,
815 lp->s.scdev_depth = depth_to_use;
816 sym_tune_dev_queuing(tp, sdev->lun, reqtags);
818 if (!spi_initial_dv(sdev->sdev_target))
824 static void sym53c8xx_slave_destroy(struct scsi_device *sdev)
826 struct sym_hcb *np = sym_get_hcb(sdev->host);
827 struct sym_lcb *lp = sym_lp(&np->target[sdev->id], sdev->lun);
830 sym_mfree_dma(lp->itlq_tbl, SYM_CONF_MAX_TASK * 4, "ITLQ_TBL");
832 sym_mfree_dma(lp, sizeof(*lp), "LCB");
836 * Linux entry point for info() function
838 static const char *sym53c8xx_info (struct Scsi_Host *host)
840 return SYM_DRIVER_NAME;
844 #ifdef SYM_LINUX_PROC_INFO_SUPPORT
846 * Proc file system stuff
848 * A read operation returns adapter information.
849 * A write operation is a control command.
850 * The string is parsed in the driver code and the command is passed
851 * to the sym_usercmd() function.
854 #ifdef SYM_LINUX_USER_COMMAND_SUPPORT
863 #define UC_SETSYNC 10
864 #define UC_SETTAGS 11
865 #define UC_SETDEBUG 12
866 #define UC_SETWIDE 14
867 #define UC_SETFLAG 15
868 #define UC_SETVERBOSE 17
869 #define UC_RESETDEV 18
870 #define UC_CLEARDEV 19
872 static void sym_exec_user_command (struct sym_hcb *np, struct sym_usrcmd *uc)
880 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT
882 sym_debug_flags = uc->data;
886 np->verbose = uc->data;
890 * We assume that other commands apply to targets.
891 * This should always be the case and avoid the below
892 * 4 lines to be repeated 6 times.
894 for (t = 0; t < SYM_CONF_MAX_TARGET; t++) {
895 if (!((uc->target >> t) & 1))
902 if (!uc->data || uc->data >= 255) {
903 tp->tgoal.iu = tp->tgoal.dt =
905 tp->tgoal.offset = 0;
906 } else if (uc->data <= 9 && np->minsync_dt) {
907 if (uc->data < np->minsync_dt)
908 uc->data = np->minsync_dt;
909 tp->tgoal.iu = tp->tgoal.dt =
912 tp->tgoal.period = uc->data;
913 tp->tgoal.offset = np->maxoffs_dt;
915 if (uc->data < np->minsync)
916 uc->data = np->minsync;
917 tp->tgoal.iu = tp->tgoal.dt =
919 tp->tgoal.period = uc->data;
920 tp->tgoal.offset = np->maxoffs;
922 tp->tgoal.check_nego = 1;
925 tp->tgoal.width = uc->data ? 1 : 0;
926 tp->tgoal.check_nego = 1;
929 for (l = 0; l < SYM_CONF_MAX_LUN; l++)
930 sym_tune_dev_queuing(tp, l, uc->data);
935 OUTB(np, nc_istat, SIGP|SEM);
938 for (l = 0; l < SYM_CONF_MAX_LUN; l++) {
939 struct sym_lcb *lp = sym_lp(tp, l);
940 if (lp) lp->to_clear = 1;
943 OUTB(np, nc_istat, SIGP|SEM);
946 tp->usrflags = uc->data;
954 static int skip_spaces(char *ptr, int len)
958 for (cnt = len; cnt > 0 && (c = *ptr++) && isspace(c); cnt--);
963 static int get_int_arg(char *ptr, int len, u_long *pv)
967 *pv = simple_strtoul(ptr, &end, 10);
971 static int is_keyword(char *ptr, int len, char *verb)
973 int verb_len = strlen(verb);
975 if (len >= verb_len && !memcmp(verb, ptr, verb_len))
981 #define SKIP_SPACES(ptr, len) \
982 if ((arg_len = skip_spaces(ptr, len)) < 1) \
984 ptr += arg_len; len -= arg_len;
986 #define GET_INT_ARG(ptr, len, v) \
987 if (!(arg_len = get_int_arg(ptr, len, &(v)))) \
989 ptr += arg_len; len -= arg_len;
993 * Parse a control command
996 static int sym_user_command(struct sym_hcb *np, char *buffer, int length)
1000 struct sym_usrcmd cmd, *uc = &cmd;
1004 memset(uc, 0, sizeof(*uc));
1006 if (len > 0 && ptr[len-1] == '\n')
1009 if ((arg_len = is_keyword(ptr, len, "setsync")) != 0)
1010 uc->cmd = UC_SETSYNC;
1011 else if ((arg_len = is_keyword(ptr, len, "settags")) != 0)
1012 uc->cmd = UC_SETTAGS;
1013 else if ((arg_len = is_keyword(ptr, len, "setverbose")) != 0)
1014 uc->cmd = UC_SETVERBOSE;
1015 else if ((arg_len = is_keyword(ptr, len, "setwide")) != 0)
1016 uc->cmd = UC_SETWIDE;
1017 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT
1018 else if ((arg_len = is_keyword(ptr, len, "setdebug")) != 0)
1019 uc->cmd = UC_SETDEBUG;
1021 else if ((arg_len = is_keyword(ptr, len, "setflag")) != 0)
1022 uc->cmd = UC_SETFLAG;
1023 else if ((arg_len = is_keyword(ptr, len, "resetdev")) != 0)
1024 uc->cmd = UC_RESETDEV;
1025 else if ((arg_len = is_keyword(ptr, len, "cleardev")) != 0)
1026 uc->cmd = UC_CLEARDEV;
1030 #ifdef DEBUG_PROC_INFO
1031 printk("sym_user_command: arg_len=%d, cmd=%ld\n", arg_len, uc->cmd);
1036 ptr += arg_len; len -= arg_len;
1045 SKIP_SPACES(ptr, len);
1046 if ((arg_len = is_keyword(ptr, len, "all")) != 0) {
1047 ptr += arg_len; len -= arg_len;
1050 GET_INT_ARG(ptr, len, target);
1051 uc->target = (1<<target);
1052 #ifdef DEBUG_PROC_INFO
1053 printk("sym_user_command: target=%ld\n", target);
1064 SKIP_SPACES(ptr, len);
1065 GET_INT_ARG(ptr, len, uc->data);
1066 #ifdef DEBUG_PROC_INFO
1067 printk("sym_user_command: data=%ld\n", uc->data);
1070 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT
1073 SKIP_SPACES(ptr, len);
1074 if ((arg_len = is_keyword(ptr, len, "alloc")))
1075 uc->data |= DEBUG_ALLOC;
1076 else if ((arg_len = is_keyword(ptr, len, "phase")))
1077 uc->data |= DEBUG_PHASE;
1078 else if ((arg_len = is_keyword(ptr, len, "queue")))
1079 uc->data |= DEBUG_QUEUE;
1080 else if ((arg_len = is_keyword(ptr, len, "result")))
1081 uc->data |= DEBUG_RESULT;
1082 else if ((arg_len = is_keyword(ptr, len, "scatter")))
1083 uc->data |= DEBUG_SCATTER;
1084 else if ((arg_len = is_keyword(ptr, len, "script")))
1085 uc->data |= DEBUG_SCRIPT;
1086 else if ((arg_len = is_keyword(ptr, len, "tiny")))
1087 uc->data |= DEBUG_TINY;
1088 else if ((arg_len = is_keyword(ptr, len, "timing")))
1089 uc->data |= DEBUG_TIMING;
1090 else if ((arg_len = is_keyword(ptr, len, "nego")))
1091 uc->data |= DEBUG_NEGO;
1092 else if ((arg_len = is_keyword(ptr, len, "tags")))
1093 uc->data |= DEBUG_TAGS;
1094 else if ((arg_len = is_keyword(ptr, len, "pointer")))
1095 uc->data |= DEBUG_POINTER;
1098 ptr += arg_len; len -= arg_len;
1100 #ifdef DEBUG_PROC_INFO
1101 printk("sym_user_command: data=%ld\n", uc->data);
1104 #endif /* SYM_LINUX_DEBUG_CONTROL_SUPPORT */
1107 SKIP_SPACES(ptr, len);
1108 if ((arg_len = is_keyword(ptr, len, "no_disc")))
1109 uc->data &= ~SYM_DISC_ENABLED;
1112 ptr += arg_len; len -= arg_len;
1122 unsigned long flags;
1124 spin_lock_irqsave(np->s.host->host_lock, flags);
1125 sym_exec_user_command (np, uc);
1126 spin_unlock_irqrestore(np->s.host->host_lock, flags);
1131 #endif /* SYM_LINUX_USER_COMMAND_SUPPORT */
1134 #ifdef SYM_LINUX_USER_INFO_SUPPORT
1136 * Informations through the proc file system.
1145 static void copy_mem_info(struct info_str *info, char *data, int len)
1147 if (info->pos + len > info->length)
1148 len = info->length - info->pos;
1150 if (info->pos + len < info->offset) {
1154 if (info->pos < info->offset) {
1155 data += (info->offset - info->pos);
1156 len -= (info->offset - info->pos);
1160 memcpy(info->buffer + info->pos, data, len);
1165 static int copy_info(struct info_str *info, char *fmt, ...)
1171 va_start(args, fmt);
1172 len = vsprintf(buf, fmt, args);
1175 copy_mem_info(info, buf, len);
1180 * Copy formatted information into the input buffer.
1182 static int sym_host_info(struct sym_hcb *np, char *ptr, off_t offset, int len)
1184 struct info_str info;
1188 info.offset = offset;
1191 copy_info(&info, "Chip " NAME53C "%s, device id 0x%x, "
1192 "revision id 0x%x\n", np->s.chip_name,
1193 np->s.device->device, np->s.device->revision);
1194 copy_info(&info, "At PCI address %s, IRQ %u\n",
1195 pci_name(np->s.device), np->s.device->irq);
1196 copy_info(&info, "Min. period factor %d, %s SCSI BUS%s\n",
1197 (int) (np->minsync_dt ? np->minsync_dt : np->minsync),
1198 np->maxwide ? "Wide" : "Narrow",
1199 np->minsync_dt ? ", DT capable" : "");
1201 copy_info(&info, "Max. started commands %d, "
1202 "max. commands per LUN %d\n",
1203 SYM_CONF_MAX_START, SYM_CONF_MAX_TAG);
1205 return info.pos > info.offset? info.pos - info.offset : 0;
1207 #endif /* SYM_LINUX_USER_INFO_SUPPORT */
1210 * Entry point of the scsi proc fs of the driver.
1211 * - func = 0 means read (returns adapter infos)
1212 * - func = 1 means write (not yet merget from sym53c8xx)
1214 static int sym53c8xx_proc_info(struct Scsi_Host *host, char *buffer,
1215 char **start, off_t offset, int length, int func)
1217 struct sym_hcb *np = sym_get_hcb(host);
1221 #ifdef SYM_LINUX_USER_COMMAND_SUPPORT
1222 retv = sym_user_command(np, buffer, length);
1229 #ifdef SYM_LINUX_USER_INFO_SUPPORT
1230 retv = sym_host_info(np, buffer, offset, length);
1238 #endif /* SYM_LINUX_PROC_INFO_SUPPORT */
1241 * Free controller resources.
1243 static void sym_free_resources(struct sym_hcb *np, struct pci_dev *pdev)
1246 * Free O/S specific resources.
1249 free_irq(pdev->irq, np);
1251 pci_iounmap(pdev, np->s.ioaddr);
1253 pci_iounmap(pdev, np->s.ramaddr);
1255 * Free O/S independent resources.
1259 sym_mfree_dma(np, sizeof(*np), "HCB");
1263 * Host attach and initialisations.
1265 * Allocate host data and ncb structure.
1266 * Remap MMIO region.
1267 * Do chip initialization.
1268 * If all is OK, install interrupt handling and
1269 * start the timer daemon.
1271 static struct Scsi_Host * __devinit sym_attach(struct scsi_host_template *tpnt,
1272 int unit, struct sym_device *dev)
1274 struct sym_data *sym_data;
1275 struct sym_hcb *np = NULL;
1276 struct Scsi_Host *shost;
1277 struct pci_dev *pdev = dev->pdev;
1278 unsigned long flags;
1281 printk(KERN_INFO "sym%d: <%s> rev 0x%x at pci %s irq %u\n",
1282 unit, dev->chip.name, pdev->revision, pci_name(pdev),
1286 * Get the firmware for this chip.
1288 fw = sym_find_firmware(&dev->chip);
1292 shost = scsi_host_alloc(tpnt, sizeof(*sym_data));
1295 sym_data = shost_priv(shost);
1298 * Allocate immediately the host control block,
1299 * since we are only expecting to succeed. :)
1300 * We keep track in the HCB of all the resources that
1301 * are to be released on error.
1303 np = __sym_calloc_dma(&pdev->dev, sizeof(*np), "HCB");
1306 np->s.device = pdev;
1307 np->bus_dmat = &pdev->dev; /* Result in 1 DMA pool per HBA */
1309 sym_data->pdev = pdev;
1312 pci_set_drvdata(pdev, np);
1315 * Copy some useful infos to the HCB.
1317 np->hcb_ba = vtobus(np);
1318 np->verbose = sym_driver_setup.verbose;
1319 np->s.device = pdev;
1321 np->features = dev->chip.features;
1322 np->clock_divn = dev->chip.nr_divisor;
1323 np->maxoffs = dev->chip.offset_max;
1324 np->maxburst = dev->chip.burst_max;
1325 np->myaddr = dev->host_id;
1330 strlcpy(np->s.chip_name, dev->chip.name, sizeof(np->s.chip_name));
1331 sprintf(np->s.inst_name, "sym%d", np->s.unit);
1333 if ((SYM_CONF_DMA_ADDRESSING_MODE > 0) && (np->features & FE_DAC) &&
1334 !pci_set_dma_mask(np->s.device, DMA_DAC_MASK)) {
1336 } else if (pci_set_dma_mask(np->s.device, DMA_32BIT_MASK)) {
1337 printf_warning("%s: No suitable DMA available\n", sym_name(np));
1342 * Try to map the controller chip to
1343 * virtual and physical memory.
1345 np->mmio_ba = (u32)dev->mmio_base;
1346 np->s.ioaddr = dev->s.ioaddr;
1347 np->s.ramaddr = dev->s.ramaddr;
1350 * Map on-chip RAM if present and supported.
1352 if (!(np->features & FE_RAM))
1355 np->ram_ba = (u32)dev->ram_base;
1357 if (sym_hcb_attach(shost, fw, dev->nvram))
1361 * Install the interrupt handler.
1362 * If we synchonize the C code with SCRIPTS on interrupt,
1363 * we do not want to share the INTR line at all.
1365 if (request_irq(pdev->irq, sym53c8xx_intr, IRQF_SHARED, NAME53C8XX,
1367 printf_err("%s: request irq %u failure\n",
1368 sym_name(np), pdev->irq);
1373 * After SCSI devices have been opened, we cannot
1374 * reset the bus safely, so we do it here.
1376 spin_lock_irqsave(shost->host_lock, flags);
1377 if (sym_reset_scsi_bus(np, 0))
1381 * Start the SCRIPTS.
1383 sym_start_up(np, 1);
1386 * Start the timer daemon
1388 init_timer(&np->s.timer);
1389 np->s.timer.data = (unsigned long) np;
1390 np->s.timer.function = sym53c8xx_timer;
1395 * Fill Linux host instance structure
1396 * and return success.
1398 shost->max_channel = 0;
1399 shost->this_id = np->myaddr;
1400 shost->max_id = np->maxwide ? 16 : 8;
1401 shost->max_lun = SYM_CONF_MAX_LUN;
1402 shost->unique_id = pci_resource_start(pdev, 0);
1403 shost->cmd_per_lun = SYM_CONF_MAX_TAG;
1404 shost->can_queue = (SYM_CONF_MAX_START-2);
1405 shost->sg_tablesize = SYM_CONF_MAX_SG;
1406 shost->max_cmd_len = 16;
1407 BUG_ON(sym2_transport_template == NULL);
1408 shost->transportt = sym2_transport_template;
1410 /* 53c896 rev 1 errata: DMA may not cross 16MB boundary */
1411 if (pdev->device == PCI_DEVICE_ID_NCR_53C896 && pdev->revision < 2)
1412 shost->dma_boundary = 0xFFFFFF;
1414 spin_unlock_irqrestore(shost->host_lock, flags);
1419 printf_err("%s: FATAL ERROR: CHECK SCSI BUS - CABLES, "
1420 "TERMINATION, DEVICE POWER etc.!\n", sym_name(np));
1421 spin_unlock_irqrestore(shost->host_lock, flags);
1425 printf_info("%s: giving up ...\n", sym_name(np));
1427 sym_free_resources(np, pdev);
1428 scsi_host_put(shost);
1435 * Detect and try to read SYMBIOS and TEKRAM NVRAM.
1437 #if SYM_CONF_NVRAM_SUPPORT
1438 static void __devinit sym_get_nvram(struct sym_device *devp, struct sym_nvram *nvp)
1443 sym_read_nvram(devp, nvp);
1446 static inline void sym_get_nvram(struct sym_device *devp, struct sym_nvram *nvp)
1449 #endif /* SYM_CONF_NVRAM_SUPPORT */
1451 static int __devinit sym_check_supported(struct sym_device *device)
1453 struct sym_chip *chip;
1454 struct pci_dev *pdev = device->pdev;
1455 unsigned long io_port = pci_resource_start(pdev, 0);
1459 * If user excluded this chip, do not initialize it.
1460 * I hate this code so much. Must kill it.
1463 for (i = 0 ; i < 8 ; i++) {
1464 if (sym_driver_setup.excludes[i] == io_port)
1470 * Check if the chip is supported. Then copy the chip description
1471 * to our device structure so we can make it match the actual device
1474 chip = sym_lookup_chip_table(pdev->device, pdev->revision);
1476 dev_info(&pdev->dev, "device not supported\n");
1479 memcpy(&device->chip, chip, sizeof(device->chip));
1485 * Ignore Symbios chips controlled by various RAID controllers.
1486 * These controllers set value 0x52414944 at RAM end - 16.
1488 static int __devinit sym_check_raid(struct sym_device *device)
1490 unsigned int ram_size, ram_val;
1492 if (!device->s.ramaddr)
1495 if (device->chip.features & FE_RAM8K)
1500 ram_val = readl(device->s.ramaddr + ram_size - 16);
1501 if (ram_val != 0x52414944)
1504 dev_info(&device->pdev->dev,
1505 "not initializing, driven by RAID controller.\n");
1509 static int __devinit sym_set_workarounds(struct sym_device *device)
1511 struct sym_chip *chip = &device->chip;
1512 struct pci_dev *pdev = device->pdev;
1516 * (ITEM 12 of a DEL about the 896 I haven't yet).
1517 * We must ensure the chip will use WRITE AND INVALIDATE.
1518 * The revision number limit is for now arbitrary.
1520 if (pdev->device == PCI_DEVICE_ID_NCR_53C896 && pdev->revision < 0x4) {
1521 chip->features |= (FE_WRIE | FE_CLSE);
1524 /* If the chip can do Memory Write Invalidate, enable it */
1525 if (chip->features & FE_WRIE) {
1526 if (pci_set_mwi(pdev))
1531 * Work around for errant bit in 895A. The 66Mhz
1532 * capable bit is set erroneously. Clear this bit.
1535 * Make sure Config space and Features agree.
1537 * Recall: writes are not normal to status register -
1538 * write a 1 to clear and a 0 to leave unchanged.
1539 * Can only reset bits.
1541 pci_read_config_word(pdev, PCI_STATUS, &status_reg);
1542 if (chip->features & FE_66MHZ) {
1543 if (!(status_reg & PCI_STATUS_66MHZ))
1544 chip->features &= ~FE_66MHZ;
1546 if (status_reg & PCI_STATUS_66MHZ) {
1547 status_reg = PCI_STATUS_66MHZ;
1548 pci_write_config_word(pdev, PCI_STATUS, status_reg);
1549 pci_read_config_word(pdev, PCI_STATUS, &status_reg);
1557 * Read and check the PCI configuration for any detected NCR
1558 * boards and save data for attaching after all boards have
1561 static void __devinit
1562 sym_init_device(struct pci_dev *pdev, struct sym_device *device)
1565 struct pci_bus_region bus_addr;
1567 device->host_id = SYM_SETUP_HOST_ID;
1568 device->pdev = pdev;
1570 pcibios_resource_to_bus(pdev, &bus_addr, &pdev->resource[1]);
1571 device->mmio_base = bus_addr.start;
1574 * If the BAR is 64-bit, resource 2 will be occupied by the
1577 if (!pdev->resource[i].flags)
1579 pcibios_resource_to_bus(pdev, &bus_addr, &pdev->resource[i]);
1580 device->ram_base = bus_addr.start;
1582 #ifdef CONFIG_SCSI_SYM53C8XX_MMIO
1583 if (device->mmio_base)
1584 device->s.ioaddr = pci_iomap(pdev, 1,
1585 pci_resource_len(pdev, 1));
1587 if (!device->s.ioaddr)
1588 device->s.ioaddr = pci_iomap(pdev, 0,
1589 pci_resource_len(pdev, 0));
1590 if (device->ram_base)
1591 device->s.ramaddr = pci_iomap(pdev, i,
1592 pci_resource_len(pdev, i));
1596 * The NCR PQS and PDS cards are constructed as a DEC bridge
1597 * behind which sits a proprietary NCR memory controller and
1598 * either four or two 53c875s as separate devices. We can tell
1599 * if an 875 is part of a PQS/PDS or not since if it is, it will
1600 * be on the same bus as the memory controller. In its usual
1601 * mode of operation, the 875s are slaved to the memory
1602 * controller for all transfers. To operate with the Linux
1603 * driver, the memory controller is disabled and the 875s
1604 * freed to function independently. The only wrinkle is that
1605 * the preset SCSI ID (which may be zero) must be read in from
1606 * a special configuration space register of the 875.
1608 static void sym_config_pqs(struct pci_dev *pdev, struct sym_device *sym_dev)
1613 for (slot = 0; slot < 256; slot++) {
1614 struct pci_dev *memc = pci_get_slot(pdev->bus, slot);
1616 if (!memc || memc->vendor != 0x101a || memc->device == 0x0009) {
1621 /* bit 1: allow individual 875 configuration */
1622 pci_read_config_byte(memc, 0x44, &tmp);
1623 if ((tmp & 0x2) == 0) {
1625 pci_write_config_byte(memc, 0x44, tmp);
1628 /* bit 2: drive individual 875 interrupts to the bus */
1629 pci_read_config_byte(memc, 0x45, &tmp);
1630 if ((tmp & 0x4) == 0) {
1632 pci_write_config_byte(memc, 0x45, tmp);
1639 pci_read_config_byte(pdev, 0x84, &tmp);
1640 sym_dev->host_id = tmp;
1644 * Called before unloading the module.
1646 * We have to free resources and halt the NCR chip.
1648 static int sym_detach(struct sym_hcb *np, struct pci_dev *pdev)
1650 printk("%s: detaching ...\n", sym_name(np));
1652 del_timer_sync(&np->s.timer);
1656 * We should use sym_soft_reset(), but we don't want to do
1657 * so, since we may not be safe if interrupts occur.
1659 printk("%s: resetting chip\n", sym_name(np));
1660 OUTB(np, nc_istat, SRST);
1663 OUTB(np, nc_istat, 0);
1665 sym_free_resources(np, pdev);
1671 * Driver host template.
1673 static struct scsi_host_template sym2_template = {
1674 .module = THIS_MODULE,
1675 .name = "sym53c8xx",
1676 .info = sym53c8xx_info,
1677 .queuecommand = sym53c8xx_queue_command,
1678 .slave_alloc = sym53c8xx_slave_alloc,
1679 .slave_configure = sym53c8xx_slave_configure,
1680 .slave_destroy = sym53c8xx_slave_destroy,
1681 .eh_abort_handler = sym53c8xx_eh_abort_handler,
1682 .eh_device_reset_handler = sym53c8xx_eh_device_reset_handler,
1683 .eh_bus_reset_handler = sym53c8xx_eh_bus_reset_handler,
1684 .eh_host_reset_handler = sym53c8xx_eh_host_reset_handler,
1686 .use_clustering = ENABLE_CLUSTERING,
1687 .use_sg_chaining = ENABLE_SG_CHAINING,
1688 .max_sectors = 0xFFFF,
1689 #ifdef SYM_LINUX_PROC_INFO_SUPPORT
1690 .proc_info = sym53c8xx_proc_info,
1691 .proc_name = NAME53C8XX,
1695 static int attach_count;
1697 static int __devinit sym2_probe(struct pci_dev *pdev,
1698 const struct pci_device_id *ent)
1700 struct sym_device sym_dev;
1701 struct sym_nvram nvram;
1702 struct Scsi_Host *shost;
1704 memset(&sym_dev, 0, sizeof(sym_dev));
1705 memset(&nvram, 0, sizeof(nvram));
1707 if (pci_enable_device(pdev))
1710 pci_set_master(pdev);
1712 if (pci_request_regions(pdev, NAME53C8XX))
1715 sym_init_device(pdev, &sym_dev);
1716 if (sym_check_supported(&sym_dev))
1719 if (sym_check_raid(&sym_dev))
1720 goto leave; /* Don't disable the device */
1722 if (sym_set_workarounds(&sym_dev))
1725 sym_config_pqs(pdev, &sym_dev);
1727 sym_get_nvram(&sym_dev, &nvram);
1729 shost = sym_attach(&sym2_template, attach_count, &sym_dev);
1733 if (scsi_add_host(shost, &pdev->dev))
1735 scsi_scan_host(shost);
1742 sym_detach(pci_get_drvdata(pdev), pdev);
1744 pci_release_regions(pdev);
1746 pci_disable_device(pdev);
1751 static void __devexit sym2_remove(struct pci_dev *pdev)
1753 struct sym_hcb *np = pci_get_drvdata(pdev);
1754 struct Scsi_Host *host = np->s.host;
1756 scsi_remove_host(host);
1757 scsi_host_put(host);
1759 sym_detach(np, pdev);
1761 pci_release_regions(pdev);
1762 pci_disable_device(pdev);
1768 * sym2_io_error_detected() - called when PCI error is detected
1769 * @pdev: pointer to PCI device
1770 * @state: current state of the PCI slot
1772 static pci_ers_result_t sym2_io_error_detected(struct pci_dev *pdev,
1773 enum pci_channel_state state)
1775 /* If slot is permanently frozen, turn everything off */
1776 if (state == pci_channel_io_perm_failure) {
1778 return PCI_ERS_RESULT_DISCONNECT;
1781 disable_irq(pdev->irq);
1782 pci_disable_device(pdev);
1784 /* Request that MMIO be enabled, so register dump can be taken. */
1785 return PCI_ERS_RESULT_CAN_RECOVER;
1789 * sym2_io_slot_dump - Enable MMIO and dump debug registers
1790 * @pdev: pointer to PCI device
1792 static pci_ers_result_t sym2_io_slot_dump(struct pci_dev *pdev)
1794 struct sym_hcb *np = pci_get_drvdata(pdev);
1796 sym_dump_registers(np);
1798 /* Request a slot reset. */
1799 return PCI_ERS_RESULT_NEED_RESET;
1803 * sym2_reset_workarounds - hardware-specific work-arounds
1805 * This routine is similar to sym_set_workarounds(), except
1806 * that, at this point, we already know that the device was
1807 * succesfully intialized at least once before, and so most
1808 * of the steps taken there are un-needed here.
1810 static void sym2_reset_workarounds(struct pci_dev *pdev)
1813 struct sym_chip *chip;
1815 chip = sym_lookup_chip_table(pdev->device, pdev->revision);
1817 /* Work around for errant bit in 895A, in a fashion
1818 * similar to what is done in sym_set_workarounds().
1820 pci_read_config_word(pdev, PCI_STATUS, &status_reg);
1821 if (!(chip->features & FE_66MHZ) && (status_reg & PCI_STATUS_66MHZ)) {
1822 status_reg = PCI_STATUS_66MHZ;
1823 pci_write_config_word(pdev, PCI_STATUS, status_reg);
1824 pci_read_config_word(pdev, PCI_STATUS, &status_reg);
1829 * sym2_io_slot_reset() - called when the pci bus has been reset.
1830 * @pdev: pointer to PCI device
1832 * Restart the card from scratch.
1834 static pci_ers_result_t sym2_io_slot_reset(struct pci_dev *pdev)
1836 struct sym_hcb *np = pci_get_drvdata(pdev);
1838 printk(KERN_INFO "%s: recovering from a PCI slot reset\n",
1841 if (pci_enable_device(pdev)) {
1842 printk(KERN_ERR "%s: Unable to enable after PCI reset\n",
1844 return PCI_ERS_RESULT_DISCONNECT;
1847 pci_set_master(pdev);
1848 enable_irq(pdev->irq);
1850 /* If the chip can do Memory Write Invalidate, enable it */
1851 if (np->features & FE_WRIE) {
1852 if (pci_set_mwi(pdev))
1853 return PCI_ERS_RESULT_DISCONNECT;
1856 /* Perform work-arounds, analogous to sym_set_workarounds() */
1857 sym2_reset_workarounds(pdev);
1859 /* Perform host reset only on one instance of the card */
1860 if (PCI_FUNC(pdev->devfn) == 0) {
1861 if (sym_reset_scsi_bus(np, 0)) {
1862 printk(KERN_ERR "%s: Unable to reset scsi host\n",
1864 return PCI_ERS_RESULT_DISCONNECT;
1866 sym_start_up(np, 1);
1869 return PCI_ERS_RESULT_RECOVERED;
1873 * sym2_io_resume() - resume normal ops after PCI reset
1874 * @pdev: pointer to PCI device
1876 * Called when the error recovery driver tells us that its
1877 * OK to resume normal operation. Use completion to allow
1878 * halted scsi ops to resume.
1880 static void sym2_io_resume(struct pci_dev *pdev)
1882 struct sym_hcb *np = pci_get_drvdata(pdev);
1883 struct Scsi_Host *shost = np->s.host;
1884 struct sym_data *sym_data = shost_priv(shost);
1886 spin_lock_irq(shost->host_lock);
1887 if (sym_data->io_reset)
1888 complete_all(sym_data->io_reset);
1889 sym_data->io_reset = NULL;
1890 spin_unlock_irq(shost->host_lock);
1893 static void sym2_get_signalling(struct Scsi_Host *shost)
1895 struct sym_hcb *np = sym_get_hcb(shost);
1896 enum spi_signal_type type;
1898 switch (np->scsi_mode) {
1900 type = SPI_SIGNAL_SE;
1903 type = SPI_SIGNAL_LVD;
1906 type = SPI_SIGNAL_HVD;
1909 type = SPI_SIGNAL_UNKNOWN;
1912 spi_signalling(shost) = type;
1915 static void sym2_set_offset(struct scsi_target *starget, int offset)
1917 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
1918 struct sym_hcb *np = sym_get_hcb(shost);
1919 struct sym_tcb *tp = &np->target[starget->id];
1921 tp->tgoal.offset = offset;
1922 tp->tgoal.check_nego = 1;
1925 static void sym2_set_period(struct scsi_target *starget, int period)
1927 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
1928 struct sym_hcb *np = sym_get_hcb(shost);
1929 struct sym_tcb *tp = &np->target[starget->id];
1931 /* have to have DT for these transfers, but DT will also
1932 * set width, so check that this is allowed */
1933 if (period <= np->minsync && spi_width(starget))
1936 tp->tgoal.period = period;
1937 tp->tgoal.check_nego = 1;
1940 static void sym2_set_width(struct scsi_target *starget, int width)
1942 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
1943 struct sym_hcb *np = sym_get_hcb(shost);
1944 struct sym_tcb *tp = &np->target[starget->id];
1946 /* It is illegal to have DT set on narrow transfers. If DT is
1947 * clear, we must also clear IU and QAS. */
1949 tp->tgoal.iu = tp->tgoal.dt = tp->tgoal.qas = 0;
1951 tp->tgoal.width = width;
1952 tp->tgoal.check_nego = 1;
1955 static void sym2_set_dt(struct scsi_target *starget, int dt)
1957 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
1958 struct sym_hcb *np = sym_get_hcb(shost);
1959 struct sym_tcb *tp = &np->target[starget->id];
1961 /* We must clear QAS and IU if DT is clear */
1965 tp->tgoal.iu = tp->tgoal.dt = tp->tgoal.qas = 0;
1966 tp->tgoal.check_nego = 1;
1970 static void sym2_set_iu(struct scsi_target *starget, int iu)
1972 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
1973 struct sym_hcb *np = sym_get_hcb(shost);
1974 struct sym_tcb *tp = &np->target[starget->id];
1977 tp->tgoal.iu = tp->tgoal.dt = 1;
1980 tp->tgoal.check_nego = 1;
1983 static void sym2_set_qas(struct scsi_target *starget, int qas)
1985 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
1986 struct sym_hcb *np = sym_get_hcb(shost);
1987 struct sym_tcb *tp = &np->target[starget->id];
1990 tp->tgoal.dt = tp->tgoal.qas = 1;
1993 tp->tgoal.check_nego = 1;
1997 static struct spi_function_template sym2_transport_functions = {
1998 .set_offset = sym2_set_offset,
2000 .set_period = sym2_set_period,
2002 .set_width = sym2_set_width,
2004 .set_dt = sym2_set_dt,
2007 .set_iu = sym2_set_iu,
2009 .set_qas = sym2_set_qas,
2012 .get_signalling = sym2_get_signalling,
2015 static struct pci_device_id sym2_id_table[] __devinitdata = {
2016 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C810,
2017 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2018 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C820,
2019 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, /* new */
2020 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C825,
2021 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2022 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C815,
2023 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2024 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C810AP,
2025 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, /* new */
2026 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C860,
2027 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2028 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1510,
2029 PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_SCSI<<8, 0xffff00, 0UL },
2030 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C896,
2031 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2032 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C895,
2033 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2034 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C885,
2035 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2036 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C875,
2037 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2038 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C1510,
2039 PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_SCSI<<8, 0xffff00, 0UL }, /* new */
2040 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C895A,
2041 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2042 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C875A,
2043 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2044 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1010_33,
2045 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2046 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1010_66,
2047 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2048 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C875J,
2049 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2053 MODULE_DEVICE_TABLE(pci, sym2_id_table);
2055 static struct pci_error_handlers sym2_err_handler = {
2056 .error_detected = sym2_io_error_detected,
2057 .mmio_enabled = sym2_io_slot_dump,
2058 .slot_reset = sym2_io_slot_reset,
2059 .resume = sym2_io_resume,
2062 static struct pci_driver sym2_driver = {
2064 .id_table = sym2_id_table,
2065 .probe = sym2_probe,
2066 .remove = __devexit_p(sym2_remove),
2067 .err_handler = &sym2_err_handler,
2070 static int __init sym2_init(void)
2074 sym2_setup_params();
2075 sym2_transport_template = spi_attach_transport(&sym2_transport_functions);
2076 if (!sym2_transport_template)
2079 error = pci_register_driver(&sym2_driver);
2081 spi_release_transport(sym2_transport_template);
2085 static void __exit sym2_exit(void)
2087 pci_unregister_driver(&sym2_driver);
2088 spi_release_transport(sym2_transport_template);
2091 module_init(sym2_init);
2092 module_exit(sym2_exit);