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/interrupt.h>
43 #include <linux/module.h>
44 #include <linux/moduleparam.h>
45 #include <linux/spinlock.h>
46 #include <scsi/scsi.h>
47 #include <scsi/scsi_tcq.h>
48 #include <scsi/scsi_device.h>
49 #include <scsi/scsi_transport.h>
52 #include "sym_nvram.h"
54 #define NAME53C "sym53c"
55 #define NAME53C8XX "sym53c8xx"
57 /* SPARC just has to be different ... */
60 #define IRQ_PRM(x) __irq_itoa(x)
63 #define IRQ_PRM(x) (x)
66 struct sym_driver_setup sym_driver_setup = SYM_LINUX_DRIVER_SETUP;
67 unsigned int sym_debug_flags = 0;
69 static char *excl_string;
70 static char *safe_string;
71 module_param_named(cmd_per_lun, sym_driver_setup.max_tag, ushort, 0);
72 module_param_string(tag_ctrl, sym_driver_setup.tag_ctrl, 100, 0);
73 module_param_named(burst, sym_driver_setup.burst_order, byte, 0);
74 module_param_named(led, sym_driver_setup.scsi_led, byte, 0);
75 module_param_named(diff, sym_driver_setup.scsi_diff, byte, 0);
76 module_param_named(irqm, sym_driver_setup.irq_mode, byte, 0);
77 module_param_named(buschk, sym_driver_setup.scsi_bus_check, byte, 0);
78 module_param_named(hostid, sym_driver_setup.host_id, byte, 0);
79 module_param_named(verb, sym_driver_setup.verbose, byte, 0);
80 module_param_named(debug, sym_debug_flags, uint, 0);
81 module_param_named(settle, sym_driver_setup.settle_delay, byte, 0);
82 module_param_named(nvram, sym_driver_setup.use_nvram, byte, 0);
83 module_param_named(excl, excl_string, charp, 0);
84 module_param_named(safe, safe_string, charp, 0);
86 MODULE_PARM_DESC(cmd_per_lun, "The maximum number of tags to use by default");
87 MODULE_PARM_DESC(tag_ctrl, "More detailed control over tags per LUN");
88 MODULE_PARM_DESC(burst, "Maximum burst. 0 to disable, 255 to read from registers");
89 MODULE_PARM_DESC(led, "Set to 1 to enable LED support");
90 MODULE_PARM_DESC(diff, "0 for no differential mode, 1 for BIOS, 2 for always, 3 for not GPIO3");
91 MODULE_PARM_DESC(irqm, "0 for open drain, 1 to leave alone, 2 for totem pole");
92 MODULE_PARM_DESC(buschk, "0 to not check, 1 for detach on error, 2 for warn on error");
93 MODULE_PARM_DESC(hostid, "The SCSI ID to use for the host adapters");
94 MODULE_PARM_DESC(verb, "0 for minimal verbosity, 1 for normal, 2 for excessive");
95 MODULE_PARM_DESC(debug, "Set bits to enable debugging");
96 MODULE_PARM_DESC(settle, "Settle delay in seconds. Default 3");
97 MODULE_PARM_DESC(nvram, "Option currently not used");
98 MODULE_PARM_DESC(excl, "List ioport addresses here to prevent controllers from being attached");
99 MODULE_PARM_DESC(safe, "Set other settings to a \"safe mode\"");
101 MODULE_LICENSE("GPL");
102 MODULE_VERSION(SYM_VERSION);
103 MODULE_AUTHOR("Matthew Wilcox <matthew@wil.cx>");
104 MODULE_DESCRIPTION("NCR, Symbios and LSI 8xx and 1010 PCI SCSI adapters");
106 static void sym2_setup_params(void)
108 char *p = excl_string;
111 while (p && (xi < 8)) {
113 int val = (int) simple_strtoul(p, &next_p, 0);
114 sym_driver_setup.excludes[xi++] = val;
119 if (*safe_string == 'y') {
120 sym_driver_setup.max_tag = 0;
121 sym_driver_setup.burst_order = 0;
122 sym_driver_setup.scsi_led = 0;
123 sym_driver_setup.scsi_diff = 1;
124 sym_driver_setup.irq_mode = 0;
125 sym_driver_setup.scsi_bus_check = 2;
126 sym_driver_setup.host_id = 7;
127 sym_driver_setup.verbose = 2;
128 sym_driver_setup.settle_delay = 10;
129 sym_driver_setup.use_nvram = 1;
130 } else if (*safe_string != 'n') {
131 printk(KERN_WARNING NAME53C8XX "Ignoring parameter %s"
132 " passed to safe option", safe_string);
137 static struct scsi_transport_template *sym2_transport_template = NULL;
140 * Used by the eh thread to wait for command completion.
141 * It is allocated on the eh thread stack.
144 struct completion done;
145 struct timer_list timer;
146 void (*old_done)(struct scsi_cmnd *);
152 * Driver private area in the SCSI command structure.
154 struct sym_ucmd { /* Override the SCSI pointer structure */
155 dma_addr_t data_mapping;
157 struct sym_eh_wait *eh_wait;
160 #define SYM_UCMD_PTR(cmd) ((struct sym_ucmd *)(&(cmd)->SCp))
161 #define SYM_SOFTC_PTR(cmd) sym_get_hcb(cmd->device->host)
163 static void __unmap_scsi_data(struct pci_dev *pdev, struct scsi_cmnd *cmd)
165 int dma_dir = cmd->sc_data_direction;
167 switch(SYM_UCMD_PTR(cmd)->data_mapped) {
169 pci_unmap_sg(pdev, cmd->buffer, cmd->use_sg, dma_dir);
172 pci_unmap_single(pdev, SYM_UCMD_PTR(cmd)->data_mapping,
173 cmd->request_bufflen, dma_dir);
176 SYM_UCMD_PTR(cmd)->data_mapped = 0;
179 static dma_addr_t __map_scsi_single_data(struct pci_dev *pdev, struct scsi_cmnd *cmd)
182 int dma_dir = cmd->sc_data_direction;
184 mapping = pci_map_single(pdev, cmd->request_buffer,
185 cmd->request_bufflen, dma_dir);
187 SYM_UCMD_PTR(cmd)->data_mapped = 1;
188 SYM_UCMD_PTR(cmd)->data_mapping = mapping;
194 static int __map_scsi_sg_data(struct pci_dev *pdev, struct scsi_cmnd *cmd)
197 int dma_dir = cmd->sc_data_direction;
199 use_sg = pci_map_sg(pdev, cmd->buffer, cmd->use_sg, dma_dir);
201 SYM_UCMD_PTR(cmd)->data_mapped = 2;
202 SYM_UCMD_PTR(cmd)->data_mapping = use_sg;
208 #define unmap_scsi_data(np, cmd) \
209 __unmap_scsi_data(np->s.device, cmd)
210 #define map_scsi_single_data(np, cmd) \
211 __map_scsi_single_data(np->s.device, cmd)
212 #define map_scsi_sg_data(np, cmd) \
213 __map_scsi_sg_data(np->s.device, cmd)
215 * Complete a pending CAM CCB.
217 void sym_xpt_done(struct sym_hcb *np, struct scsi_cmnd *cmd)
219 unmap_scsi_data(np, cmd);
223 static void sym_xpt_done2(struct sym_hcb *np, struct scsi_cmnd *cmd, int cam_status)
225 sym_set_cam_status(cmd, cam_status);
226 sym_xpt_done(np, cmd);
231 * Tell the SCSI layer about a BUS RESET.
233 void sym_xpt_async_bus_reset(struct sym_hcb *np)
235 printf_notice("%s: SCSI BUS has been reset.\n", sym_name(np));
236 np->s.settle_time = jiffies + sym_driver_setup.settle_delay * HZ;
237 np->s.settle_time_valid = 1;
238 if (sym_verbose >= 2)
239 printf_info("%s: command processing suspended for %d seconds\n",
240 sym_name(np), sym_driver_setup.settle_delay);
244 * Tell the SCSI layer about a BUS DEVICE RESET message sent.
246 void sym_xpt_async_sent_bdr(struct sym_hcb *np, int target)
248 printf_notice("%s: TARGET %d has been reset.\n", sym_name(np), target);
252 * Choose the more appropriate CAM status if
253 * the IO encountered an extended error.
255 static int sym_xerr_cam_status(int cam_status, int x_status)
258 if (x_status & XE_PARITY_ERR)
259 cam_status = DID_PARITY;
260 else if (x_status &(XE_EXTRA_DATA|XE_SODL_UNRUN|XE_SWIDE_OVRUN))
261 cam_status = DID_ERROR;
262 else if (x_status & XE_BAD_PHASE)
263 cam_status = DID_ERROR;
265 cam_status = DID_ERROR;
271 * Build CAM result for a failed or auto-sensed IO.
273 void sym_set_cam_result_error(struct sym_hcb *np, struct sym_ccb *cp, int resid)
275 struct scsi_cmnd *cmd = cp->cmd;
276 u_int cam_status, scsi_status, drv_status;
280 scsi_status = cp->ssss_status;
282 if (cp->host_flags & HF_SENSE) {
283 scsi_status = cp->sv_scsi_status;
284 resid = cp->sv_resid;
285 if (sym_verbose && cp->sv_xerr_status)
286 sym_print_xerr(cmd, cp->sv_xerr_status);
287 if (cp->host_status == HS_COMPLETE &&
288 cp->ssss_status == S_GOOD &&
289 cp->xerr_status == 0) {
290 cam_status = sym_xerr_cam_status(DID_OK,
292 drv_status = DRIVER_SENSE;
294 * Bounce back the sense data to user.
296 memset(&cmd->sense_buffer, 0, sizeof(cmd->sense_buffer));
297 memcpy(cmd->sense_buffer, cp->sns_bbuf,
298 min(sizeof(cmd->sense_buffer),
299 (size_t)SYM_SNS_BBUF_LEN));
302 * If the device reports a UNIT ATTENTION condition
303 * due to a RESET condition, we should consider all
304 * disconnect CCBs for this unit as aborted.
308 p = (u_char *) cmd->sense_data;
309 if (p[0]==0x70 && p[2]==0x6 && p[12]==0x29)
310 sym_clear_tasks(np, DID_ABORT,
311 cp->target,cp->lun, -1);
316 * Error return from our internal request sense. This
317 * is bad: we must clear the contingent allegiance
318 * condition otherwise the device will always return
319 * BUSY. Use a big stick.
321 sym_reset_scsi_target(np, cmd->device->id);
322 cam_status = DID_ERROR;
324 } else if (cp->host_status == HS_COMPLETE) /* Bad SCSI status */
326 else if (cp->host_status == HS_SEL_TIMEOUT) /* Selection timeout */
327 cam_status = DID_NO_CONNECT;
328 else if (cp->host_status == HS_UNEXPECTED) /* Unexpected BUS FREE*/
329 cam_status = DID_ERROR;
330 else { /* Extended error */
332 sym_print_addr(cmd, "COMMAND FAILED (%x %x %x).\n",
333 cp->host_status, cp->ssss_status,
337 * Set the most appropriate value for CAM status.
339 cam_status = sym_xerr_cam_status(DID_ERROR, cp->xerr_status);
342 cmd->result = (drv_status << 24) + (cam_status << 16) + scsi_status;
347 * Build the scatter/gather array for an I/O.
350 static int sym_scatter_no_sglist(struct sym_hcb *np, struct sym_ccb *cp, struct scsi_cmnd *cmd)
352 struct sym_tblmove *data = &cp->phys.data[SYM_CONF_MAX_SG-1];
354 unsigned int len = cmd->request_bufflen;
357 dma_addr_t baddr = map_scsi_single_data(np, cmd);
360 struct sym_tcb *tp = &np->target[cp->target];
361 if (tp->head.wval & EWS) {
363 cp->odd_byte_adjustment++;
367 sym_build_sge(np, data, baddr, len);
379 static int sym_scatter(struct sym_hcb *np, struct sym_ccb *cp, struct scsi_cmnd *cmd)
382 int use_sg = (int) cmd->use_sg;
387 segment = sym_scatter_no_sglist(np, cp, cmd);
388 else if ((use_sg = map_scsi_sg_data(np, cmd)) > 0) {
389 struct scatterlist *scatter = (struct scatterlist *)cmd->buffer;
390 struct sym_tcb *tp = &np->target[cp->target];
391 struct sym_tblmove *data;
393 if (use_sg > SYM_CONF_MAX_SG) {
394 unmap_scsi_data(np, cmd);
398 data = &cp->phys.data[SYM_CONF_MAX_SG - use_sg];
400 for (segment = 0; segment < use_sg; segment++) {
401 dma_addr_t baddr = sg_dma_address(&scatter[segment]);
402 unsigned int len = sg_dma_len(&scatter[segment]);
404 if ((len & 1) && (tp->head.wval & EWS)) {
406 cp->odd_byte_adjustment++;
409 sym_build_sge(np, &data[segment], baddr, len);
420 * Queue a SCSI command.
422 static int sym_queue_command(struct sym_hcb *np, struct scsi_cmnd *cmd)
424 struct scsi_device *sdev = cmd->device;
431 * Minimal checkings, so that we will not
432 * go outside our tables.
434 if (sdev->id == np->myaddr) {
435 sym_xpt_done2(np, cmd, DID_NO_CONNECT);
440 * Retrieve the target descriptor.
442 tp = &np->target[sdev->id];
445 * Select tagged/untagged.
447 lp = sym_lp(tp, sdev->lun);
448 order = (lp && lp->s.reqtags) ? M_SIMPLE_TAG : 0;
453 cp = sym_get_ccb(np, cmd, order);
455 return 1; /* Means resource shortage */
456 sym_queue_scsiio(np, cmd, cp);
461 * Setup buffers and pointers that address the CDB.
463 static inline int sym_setup_cdb(struct sym_hcb *np, struct scsi_cmnd *cmd, struct sym_ccb *cp)
465 memcpy(cp->cdb_buf, cmd->cmnd, cmd->cmd_len);
467 cp->phys.cmd.addr = CCB_BA(cp, cdb_buf[0]);
468 cp->phys.cmd.size = cpu_to_scr(cmd->cmd_len);
474 * Setup pointers that address the data and start the I/O.
476 int sym_setup_data_and_start(struct sym_hcb *np, struct scsi_cmnd *cmd, struct sym_ccb *cp)
478 struct sym_tcb *tp = &np->target[cp->target];
479 struct sym_lcb *lp = sym_lp(tp, cp->lun);
486 if (sym_setup_cdb(np, cmd, cp))
490 * No direction means no data.
492 dir = cmd->sc_data_direction;
493 if (dir != DMA_NONE) {
494 cp->segments = sym_scatter(np, cp, cmd);
495 if (cp->segments < 0) {
496 sym_set_cam_status(cmd, DID_ERROR);
501 * No segments means no data.
511 * Set the data pointer.
514 case DMA_BIDIRECTIONAL:
515 printk("%s: got DMA_BIDIRECTIONAL command", sym_name(np));
516 sym_set_cam_status(cmd, DID_ERROR);
519 goalp = SCRIPTA_BA(np, data_out2) + 8;
520 lastp = goalp - 8 - (cp->segments * (2*4));
522 case DMA_FROM_DEVICE:
523 cp->host_flags |= HF_DATA_IN;
524 goalp = SCRIPTA_BA(np, data_in2) + 8;
525 lastp = goalp - 8 - (cp->segments * (2*4));
529 lastp = goalp = SCRIPTB_BA(np, no_data);
534 * Set all pointers values needed by SCRIPTS.
536 cp->phys.head.lastp = cpu_to_scr(lastp);
537 cp->phys.head.savep = cpu_to_scr(lastp);
538 cp->startp = cp->phys.head.savep;
539 cp->goalp = cpu_to_scr(goalp);
542 * When `#ifed 1', the code below makes the driver
543 * panic on the first attempt to write to a SCSI device.
544 * It is the first test we want to do after a driver
545 * change that does not seem obviously safe. :)
548 switch (cp->cdb_buf[0]) {
549 case 0x0A: case 0x2A: case 0xAA:
550 panic("XXXXXXXXXXXXX WRITE NOT YET ALLOWED XXXXXXXXXXXXXX\n");
560 sym_start_next_ccbs(np, lp, 2);
564 sym_free_ccb(np, cp);
565 sym_xpt_done(np, cmd);
573 * Misused to keep the driver running when
574 * interrupts are not configured correctly.
576 static void sym_timer(struct sym_hcb *np)
578 unsigned long thistime = jiffies;
583 np->s.timer.expires = thistime + SYM_CONF_TIMER_INTERVAL;
584 add_timer(&np->s.timer);
587 * If we are resetting the ncr, wait for settle_time before
588 * clearing it. Then command processing will be resumed.
590 if (np->s.settle_time_valid) {
591 if (time_before_eq(np->s.settle_time, thistime)) {
592 if (sym_verbose >= 2 )
593 printk("%s: command processing resumed\n",
595 np->s.settle_time_valid = 0;
601 * Nothing to do for now, but that may come.
603 if (np->s.lasttime + 4*HZ < thistime) {
604 np->s.lasttime = thistime;
607 #ifdef SYM_CONF_PCIQ_MAY_MISS_COMPLETIONS
609 * Some way-broken PCI bridges may lead to
610 * completions being lost when the clearing
611 * of the INTFLY flag by the CPU occurs
612 * concurrently with the chip raising this flag.
613 * If this ever happen, lost completions will
622 * PCI BUS error handler.
624 void sym_log_bus_error(struct sym_hcb *np)
627 pci_read_config_word(np->s.device, PCI_STATUS, &pci_sts);
628 if (pci_sts & 0xf900) {
629 pci_write_config_word(np->s.device, PCI_STATUS, pci_sts);
630 printf("%s: PCI STATUS = 0x%04x\n",
631 sym_name(np), pci_sts & 0xf900);
636 * queuecommand method. Entered with the host adapter lock held and
637 * interrupts disabled.
639 static int sym53c8xx_queue_command(struct scsi_cmnd *cmd,
640 void (*done)(struct scsi_cmnd *))
642 struct sym_hcb *np = SYM_SOFTC_PTR(cmd);
643 struct sym_ucmd *ucp = SYM_UCMD_PTR(cmd);
646 cmd->scsi_done = done;
647 memset(ucp, 0, sizeof(*ucp));
650 * Shorten our settle_time if needed for
651 * this command not to time out.
653 if (np->s.settle_time_valid && cmd->timeout_per_command) {
654 unsigned long tlimit = jiffies + cmd->timeout_per_command;
655 tlimit -= SYM_CONF_TIMER_INTERVAL*2;
656 if (time_after(np->s.settle_time, tlimit)) {
657 np->s.settle_time = tlimit;
661 if (np->s.settle_time_valid)
662 return SCSI_MLQUEUE_HOST_BUSY;
664 sts = sym_queue_command(np, cmd);
666 return SCSI_MLQUEUE_HOST_BUSY;
671 * Linux entry point of the interrupt handler.
673 static irqreturn_t sym53c8xx_intr(int irq, void *dev_id, struct pt_regs * regs)
676 struct sym_hcb *np = (struct sym_hcb *)dev_id;
678 if (DEBUG_FLAGS & DEBUG_TINY) printf_debug ("[");
680 spin_lock_irqsave(np->s.host->host_lock, flags);
682 spin_unlock_irqrestore(np->s.host->host_lock, flags);
684 if (DEBUG_FLAGS & DEBUG_TINY) printf_debug ("]\n");
690 * Linux entry point of the timer handler
692 static void sym53c8xx_timer(unsigned long npref)
694 struct sym_hcb *np = (struct sym_hcb *)npref;
697 spin_lock_irqsave(np->s.host->host_lock, flags);
699 spin_unlock_irqrestore(np->s.host->host_lock, flags);
704 * What the eh thread wants us to perform.
706 #define SYM_EH_ABORT 0
707 #define SYM_EH_DEVICE_RESET 1
708 #define SYM_EH_BUS_RESET 2
709 #define SYM_EH_HOST_RESET 3
712 * What we will do regarding the involved SCSI command.
714 #define SYM_EH_DO_IGNORE 0
715 #define SYM_EH_DO_COMPLETE 1
716 #define SYM_EH_DO_WAIT 2
719 * Our general completion handler.
721 static void __sym_eh_done(struct scsi_cmnd *cmd, int timed_out)
723 struct sym_eh_wait *ep = SYM_UCMD_PTR(cmd)->eh_wait;
727 /* Try to avoid a race here (not 100% safe) */
730 if (ep->to_do == SYM_EH_DO_WAIT && !del_timer(&ep->timer))
734 /* Revert everything */
735 SYM_UCMD_PTR(cmd)->eh_wait = NULL;
736 cmd->scsi_done = ep->old_done;
738 /* Wake up the eh thread if it wants to sleep */
739 if (ep->to_do == SYM_EH_DO_WAIT)
744 * scsi_done() alias when error recovery is in progress.
746 static void sym_eh_done(struct scsi_cmnd *cmd) { __sym_eh_done(cmd, 0); }
749 * Some timeout handler to avoid waiting too long.
751 static void sym_eh_timeout(u_long p) { __sym_eh_done((struct scsi_cmnd *)p, 1); }
754 * Generic method for our eh processing.
755 * The 'op' argument tells what we have to do.
757 static int sym_eh_handler(int op, char *opname, struct scsi_cmnd *cmd)
759 struct sym_hcb *np = SYM_SOFTC_PTR(cmd);
761 int to_do = SYM_EH_DO_IGNORE;
763 struct sym_eh_wait eh, *ep = &eh;
765 dev_warn(&cmd->device->sdev_gendev, "%s operation started.\n", opname);
767 /* This one is queued in some place -> to wait for completion */
768 FOR_EACH_QUEUED_ELEMENT(&np->busy_ccbq, qp) {
769 struct sym_ccb *cp = sym_que_entry(qp, struct sym_ccb, link_ccbq);
770 if (cp->cmd == cmd) {
771 to_do = SYM_EH_DO_WAIT;
777 /* Prepare stuff to either ignore, complete or wait for completion */
780 case SYM_EH_DO_IGNORE:
783 init_completion(&ep->done);
785 case SYM_EH_DO_COMPLETE:
786 ep->old_done = cmd->scsi_done;
787 cmd->scsi_done = sym_eh_done;
788 SYM_UCMD_PTR(cmd)->eh_wait = ep;
791 /* Try to proceed the operation we have been asked for */
795 sts = sym_abort_scsiio(np, cmd, 1);
797 case SYM_EH_DEVICE_RESET:
798 sts = sym_reset_scsi_target(np, cmd->device->id);
800 case SYM_EH_BUS_RESET:
801 sym_reset_scsi_bus(np, 1);
804 case SYM_EH_HOST_RESET:
805 sym_reset_scsi_bus(np, 0);
806 sym_start_up (np, 1);
813 /* On error, restore everything and cross fingers :) */
815 SYM_UCMD_PTR(cmd)->eh_wait = NULL;
816 cmd->scsi_done = ep->old_done;
817 to_do = SYM_EH_DO_IGNORE;
821 /* Complete the command with locks held as required by the driver */
822 if (to_do == SYM_EH_DO_COMPLETE)
823 sym_xpt_done2(np, cmd, DID_ABORT);
825 /* Wait for completion with locks released, as required by kernel */
826 if (to_do == SYM_EH_DO_WAIT) {
827 init_timer(&ep->timer);
828 ep->timer.expires = jiffies + (5*HZ);
829 ep->timer.function = sym_eh_timeout;
830 ep->timer.data = (u_long)cmd;
831 ep->timed_out = 1; /* Be pessimistic for once :) */
832 add_timer(&ep->timer);
833 spin_unlock_irq(np->s.host->host_lock);
834 wait_for_completion(&ep->done);
835 spin_lock_irq(np->s.host->host_lock);
839 dev_warn(&cmd->device->sdev_gendev, "%s operation %s.\n", opname,
840 sts==0 ? "complete" :sts==-2 ? "timed-out" : "failed");
841 return sts ? SCSI_FAILED : SCSI_SUCCESS;
846 * Error handlers called from the eh thread (one thread per HBA).
848 static int sym53c8xx_eh_abort_handler(struct scsi_cmnd *cmd)
852 spin_lock_irq(cmd->device->host->host_lock);
853 rc = sym_eh_handler(SYM_EH_ABORT, "ABORT", cmd);
854 spin_unlock_irq(cmd->device->host->host_lock);
859 static int sym53c8xx_eh_device_reset_handler(struct scsi_cmnd *cmd)
863 spin_lock_irq(cmd->device->host->host_lock);
864 rc = sym_eh_handler(SYM_EH_DEVICE_RESET, "DEVICE RESET", cmd);
865 spin_unlock_irq(cmd->device->host->host_lock);
870 static int sym53c8xx_eh_bus_reset_handler(struct scsi_cmnd *cmd)
874 spin_lock_irq(cmd->device->host->host_lock);
875 rc = sym_eh_handler(SYM_EH_BUS_RESET, "BUS RESET", cmd);
876 spin_unlock_irq(cmd->device->host->host_lock);
881 static int sym53c8xx_eh_host_reset_handler(struct scsi_cmnd *cmd)
885 spin_lock_irq(cmd->device->host->host_lock);
886 rc = sym_eh_handler(SYM_EH_HOST_RESET, "HOST RESET", cmd);
887 spin_unlock_irq(cmd->device->host->host_lock);
893 * Tune device queuing depth, according to various limits.
895 static void sym_tune_dev_queuing(struct sym_tcb *tp, int lun, u_short reqtags)
897 struct sym_lcb *lp = sym_lp(tp, lun);
903 oldtags = lp->s.reqtags;
905 if (reqtags > lp->s.scdev_depth)
906 reqtags = lp->s.scdev_depth;
908 lp->started_limit = reqtags ? reqtags : 2;
910 lp->s.reqtags = reqtags;
912 if (reqtags != oldtags) {
913 dev_info(&tp->starget->dev,
914 "tagged command queuing %s, command queue depth %d.\n",
915 lp->s.reqtags ? "enabled" : "disabled",
921 * Linux select queue depths function
923 #define DEF_DEPTH (sym_driver_setup.max_tag)
924 #define ALL_TARGETS -2
929 static int device_queue_depth(struct sym_hcb *np, int target, int lun)
932 char *p = sym_driver_setup.tag_ctrl;
938 while ((c = *p++) != 0) {
939 v = simple_strtoul(p, &ep, 0);
948 t = (target == v) ? v : NO_TARGET;
953 u = (lun == v) ? v : NO_LUN;
956 if (h == np->s.unit &&
957 (t == ALL_TARGETS || t == target) &&
958 (u == ALL_LUNS || u == lun))
973 static int sym53c8xx_slave_alloc(struct scsi_device *sdev)
975 struct sym_hcb *np = sym_get_hcb(sdev->host);
976 struct sym_tcb *tp = &np->target[sdev->id];
979 if (sdev->id >= SYM_CONF_MAX_TARGET || sdev->lun >= SYM_CONF_MAX_LUN)
982 tp->starget = sdev->sdev_target;
984 * Fail the device init if the device is flagged NOSCAN at BOOT in
985 * the NVRAM. This may speed up boot and maintain coherency with
986 * BIOS device numbering. Clearing the flag allows the user to
987 * rescan skipped devices later. We also return an error for
988 * devices not flagged for SCAN LUNS in the NVRAM since some single
989 * lun devices behave badly when asked for a non zero LUN.
992 if (tp->usrflags & SYM_SCAN_BOOT_DISABLED) {
993 tp->usrflags &= ~SYM_SCAN_BOOT_DISABLED;
994 starget_printk(KERN_INFO, tp->starget,
995 "Scan at boot disabled in NVRAM\n");
999 if (tp->usrflags & SYM_SCAN_LUNS_DISABLED) {
1002 starget_printk(KERN_INFO, tp->starget,
1003 "Multiple LUNs disabled in NVRAM\n");
1006 lp = sym_alloc_lcb(np, sdev->id, sdev->lun);
1010 spi_min_period(tp->starget) = tp->usr_period;
1011 spi_max_width(tp->starget) = tp->usr_width;
1017 * Linux entry point for device queue sizing.
1019 static int sym53c8xx_slave_configure(struct scsi_device *sdev)
1021 struct sym_hcb *np = sym_get_hcb(sdev->host);
1022 struct sym_tcb *tp = &np->target[sdev->id];
1023 struct sym_lcb *lp = sym_lp(tp, sdev->lun);
1024 int reqtags, depth_to_use;
1029 lp->curr_flags = lp->user_flags;
1032 * Select queue depth from driver setup.
1033 * Donnot use more than configured by user.
1035 * Donnot use more than our maximum.
1037 reqtags = device_queue_depth(np, sdev->id, sdev->lun);
1038 if (reqtags > tp->usrtags)
1039 reqtags = tp->usrtags;
1040 if (!sdev->tagged_supported)
1042 #if 1 /* Avoid to locally queue commands for no good reasons */
1043 if (reqtags > SYM_CONF_MAX_TAG)
1044 reqtags = SYM_CONF_MAX_TAG;
1045 depth_to_use = (reqtags ? reqtags : 2);
1047 depth_to_use = (reqtags ? SYM_CONF_MAX_TAG : 2);
1049 scsi_adjust_queue_depth(sdev,
1050 (sdev->tagged_supported ?
1051 MSG_SIMPLE_TAG : 0),
1053 lp->s.scdev_depth = depth_to_use;
1054 sym_tune_dev_queuing(tp, sdev->lun, reqtags);
1056 if (!spi_initial_dv(sdev->sdev_target))
1057 spi_dv_device(sdev);
1062 static void sym53c8xx_slave_destroy(struct scsi_device *sdev)
1064 struct sym_hcb *np = sym_get_hcb(sdev->host);
1065 struct sym_lcb *lp = sym_lp(&np->target[sdev->id], sdev->lun);
1068 sym_mfree_dma(lp->itlq_tbl, SYM_CONF_MAX_TASK * 4, "ITLQ_TBL");
1070 sym_mfree_dma(lp, sizeof(*lp), "LCB");
1074 * Linux entry point for info() function
1076 static const char *sym53c8xx_info (struct Scsi_Host *host)
1078 return SYM_DRIVER_NAME;
1082 #ifdef SYM_LINUX_PROC_INFO_SUPPORT
1084 * Proc file system stuff
1086 * A read operation returns adapter information.
1087 * A write operation is a control command.
1088 * The string is parsed in the driver code and the command is passed
1089 * to the sym_usercmd() function.
1092 #ifdef SYM_LINUX_USER_COMMAND_SUPPORT
1101 #define UC_SETSYNC 10
1102 #define UC_SETTAGS 11
1103 #define UC_SETDEBUG 12
1104 #define UC_SETWIDE 14
1105 #define UC_SETFLAG 15
1106 #define UC_SETVERBOSE 17
1107 #define UC_RESETDEV 18
1108 #define UC_CLEARDEV 19
1110 static void sym_exec_user_command (struct sym_hcb *np, struct sym_usrcmd *uc)
1118 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT
1120 sym_debug_flags = uc->data;
1124 np->verbose = uc->data;
1128 * We assume that other commands apply to targets.
1129 * This should always be the case and avoid the below
1130 * 4 lines to be repeated 6 times.
1132 for (t = 0; t < SYM_CONF_MAX_TARGET; t++) {
1133 if (!((uc->target >> t) & 1))
1135 tp = &np->target[t];
1140 if (!uc->data || uc->data >= 255) {
1141 tp->tgoal.iu = tp->tgoal.dt =
1143 tp->tgoal.offset = 0;
1144 } else if (uc->data <= 9 && np->minsync_dt) {
1145 if (uc->data < np->minsync_dt)
1146 uc->data = np->minsync_dt;
1147 tp->tgoal.iu = tp->tgoal.dt =
1149 tp->tgoal.width = 1;
1150 tp->tgoal.period = uc->data;
1151 tp->tgoal.offset = np->maxoffs_dt;
1153 if (uc->data < np->minsync)
1154 uc->data = np->minsync;
1155 tp->tgoal.iu = tp->tgoal.dt =
1157 tp->tgoal.period = uc->data;
1158 tp->tgoal.offset = np->maxoffs;
1160 tp->tgoal.check_nego = 1;
1163 tp->tgoal.width = uc->data ? 1 : 0;
1164 tp->tgoal.check_nego = 1;
1167 for (l = 0; l < SYM_CONF_MAX_LUN; l++)
1168 sym_tune_dev_queuing(tp, l, uc->data);
1172 np->istat_sem = SEM;
1173 OUTB(np, nc_istat, SIGP|SEM);
1176 for (l = 0; l < SYM_CONF_MAX_LUN; l++) {
1177 struct sym_lcb *lp = sym_lp(tp, l);
1178 if (lp) lp->to_clear = 1;
1180 np->istat_sem = SEM;
1181 OUTB(np, nc_istat, SIGP|SEM);
1184 tp->usrflags = uc->data;
1192 static int skip_spaces(char *ptr, int len)
1196 for (cnt = len; cnt > 0 && (c = *ptr++) && isspace(c); cnt--);
1201 static int get_int_arg(char *ptr, int len, u_long *pv)
1205 *pv = simple_strtoul(ptr, &end, 10);
1209 static int is_keyword(char *ptr, int len, char *verb)
1211 int verb_len = strlen(verb);
1213 if (len >= verb_len && !memcmp(verb, ptr, verb_len))
1219 #define SKIP_SPACES(ptr, len) \
1220 if ((arg_len = skip_spaces(ptr, len)) < 1) \
1222 ptr += arg_len; len -= arg_len;
1224 #define GET_INT_ARG(ptr, len, v) \
1225 if (!(arg_len = get_int_arg(ptr, len, &(v)))) \
1227 ptr += arg_len; len -= arg_len;
1231 * Parse a control command
1234 static int sym_user_command(struct sym_hcb *np, char *buffer, int length)
1238 struct sym_usrcmd cmd, *uc = &cmd;
1242 memset(uc, 0, sizeof(*uc));
1244 if (len > 0 && ptr[len-1] == '\n')
1247 if ((arg_len = is_keyword(ptr, len, "setsync")) != 0)
1248 uc->cmd = UC_SETSYNC;
1249 else if ((arg_len = is_keyword(ptr, len, "settags")) != 0)
1250 uc->cmd = UC_SETTAGS;
1251 else if ((arg_len = is_keyword(ptr, len, "setverbose")) != 0)
1252 uc->cmd = UC_SETVERBOSE;
1253 else if ((arg_len = is_keyword(ptr, len, "setwide")) != 0)
1254 uc->cmd = UC_SETWIDE;
1255 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT
1256 else if ((arg_len = is_keyword(ptr, len, "setdebug")) != 0)
1257 uc->cmd = UC_SETDEBUG;
1259 else if ((arg_len = is_keyword(ptr, len, "setflag")) != 0)
1260 uc->cmd = UC_SETFLAG;
1261 else if ((arg_len = is_keyword(ptr, len, "resetdev")) != 0)
1262 uc->cmd = UC_RESETDEV;
1263 else if ((arg_len = is_keyword(ptr, len, "cleardev")) != 0)
1264 uc->cmd = UC_CLEARDEV;
1268 #ifdef DEBUG_PROC_INFO
1269 printk("sym_user_command: arg_len=%d, cmd=%ld\n", arg_len, uc->cmd);
1274 ptr += arg_len; len -= arg_len;
1283 SKIP_SPACES(ptr, len);
1284 if ((arg_len = is_keyword(ptr, len, "all")) != 0) {
1285 ptr += arg_len; len -= arg_len;
1288 GET_INT_ARG(ptr, len, target);
1289 uc->target = (1<<target);
1290 #ifdef DEBUG_PROC_INFO
1291 printk("sym_user_command: target=%ld\n", target);
1302 SKIP_SPACES(ptr, len);
1303 GET_INT_ARG(ptr, len, uc->data);
1304 #ifdef DEBUG_PROC_INFO
1305 printk("sym_user_command: data=%ld\n", uc->data);
1308 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT
1311 SKIP_SPACES(ptr, len);
1312 if ((arg_len = is_keyword(ptr, len, "alloc")))
1313 uc->data |= DEBUG_ALLOC;
1314 else if ((arg_len = is_keyword(ptr, len, "phase")))
1315 uc->data |= DEBUG_PHASE;
1316 else if ((arg_len = is_keyword(ptr, len, "queue")))
1317 uc->data |= DEBUG_QUEUE;
1318 else if ((arg_len = is_keyword(ptr, len, "result")))
1319 uc->data |= DEBUG_RESULT;
1320 else if ((arg_len = is_keyword(ptr, len, "scatter")))
1321 uc->data |= DEBUG_SCATTER;
1322 else if ((arg_len = is_keyword(ptr, len, "script")))
1323 uc->data |= DEBUG_SCRIPT;
1324 else if ((arg_len = is_keyword(ptr, len, "tiny")))
1325 uc->data |= DEBUG_TINY;
1326 else if ((arg_len = is_keyword(ptr, len, "timing")))
1327 uc->data |= DEBUG_TIMING;
1328 else if ((arg_len = is_keyword(ptr, len, "nego")))
1329 uc->data |= DEBUG_NEGO;
1330 else if ((arg_len = is_keyword(ptr, len, "tags")))
1331 uc->data |= DEBUG_TAGS;
1332 else if ((arg_len = is_keyword(ptr, len, "pointer")))
1333 uc->data |= DEBUG_POINTER;
1336 ptr += arg_len; len -= arg_len;
1338 #ifdef DEBUG_PROC_INFO
1339 printk("sym_user_command: data=%ld\n", uc->data);
1342 #endif /* SYM_LINUX_DEBUG_CONTROL_SUPPORT */
1345 SKIP_SPACES(ptr, len);
1346 if ((arg_len = is_keyword(ptr, len, "no_disc")))
1347 uc->data &= ~SYM_DISC_ENABLED;
1350 ptr += arg_len; len -= arg_len;
1360 unsigned long flags;
1362 spin_lock_irqsave(np->s.host->host_lock, flags);
1363 sym_exec_user_command (np, uc);
1364 spin_unlock_irqrestore(np->s.host->host_lock, flags);
1369 #endif /* SYM_LINUX_USER_COMMAND_SUPPORT */
1372 #ifdef SYM_LINUX_USER_INFO_SUPPORT
1374 * Informations through the proc file system.
1383 static void copy_mem_info(struct info_str *info, char *data, int len)
1385 if (info->pos + len > info->length)
1386 len = info->length - info->pos;
1388 if (info->pos + len < info->offset) {
1392 if (info->pos < info->offset) {
1393 data += (info->offset - info->pos);
1394 len -= (info->offset - info->pos);
1398 memcpy(info->buffer + info->pos, data, len);
1403 static int copy_info(struct info_str *info, char *fmt, ...)
1409 va_start(args, fmt);
1410 len = vsprintf(buf, fmt, args);
1413 copy_mem_info(info, buf, len);
1418 * Copy formatted information into the input buffer.
1420 static int sym_host_info(struct sym_hcb *np, char *ptr, off_t offset, int len)
1422 struct info_str info;
1426 info.offset = offset;
1429 copy_info(&info, "Chip " NAME53C "%s, device id 0x%x, "
1430 "revision id 0x%x\n",
1431 np->s.chip_name, np->device_id, np->revision_id);
1432 copy_info(&info, "At PCI address %s, IRQ " IRQ_FMT "\n",
1433 pci_name(np->s.device), IRQ_PRM(np->s.irq));
1434 copy_info(&info, "Min. period factor %d, %s SCSI BUS%s\n",
1435 (int) (np->minsync_dt ? np->minsync_dt : np->minsync),
1436 np->maxwide ? "Wide" : "Narrow",
1437 np->minsync_dt ? ", DT capable" : "");
1439 copy_info(&info, "Max. started commands %d, "
1440 "max. commands per LUN %d\n",
1441 SYM_CONF_MAX_START, SYM_CONF_MAX_TAG);
1443 return info.pos > info.offset? info.pos - info.offset : 0;
1445 #endif /* SYM_LINUX_USER_INFO_SUPPORT */
1448 * Entry point of the scsi proc fs of the driver.
1449 * - func = 0 means read (returns adapter infos)
1450 * - func = 1 means write (not yet merget from sym53c8xx)
1452 static int sym53c8xx_proc_info(struct Scsi_Host *host, char *buffer,
1453 char **start, off_t offset, int length, int func)
1455 struct sym_hcb *np = sym_get_hcb(host);
1459 #ifdef SYM_LINUX_USER_COMMAND_SUPPORT
1460 retv = sym_user_command(np, buffer, length);
1467 #ifdef SYM_LINUX_USER_INFO_SUPPORT
1468 retv = sym_host_info(np, buffer, offset, length);
1476 #endif /* SYM_LINUX_PROC_INFO_SUPPORT */
1479 * Free controller resources.
1481 static void sym_free_resources(struct sym_hcb *np, struct pci_dev *pdev)
1484 * Free O/S specific resources.
1487 free_irq(np->s.irq, np);
1489 pci_iounmap(pdev, np->s.ioaddr);
1491 pci_iounmap(pdev, np->s.ramaddr);
1493 * Free O/S independent resources.
1497 sym_mfree_dma(np, sizeof(*np), "HCB");
1501 * Ask/tell the system about DMA addressing.
1503 static int sym_setup_bus_dma_mask(struct sym_hcb *np)
1505 #if SYM_CONF_DMA_ADDRESSING_MODE > 0
1506 #if SYM_CONF_DMA_ADDRESSING_MODE == 1
1507 #define DMA_DAC_MASK DMA_40BIT_MASK
1508 #elif SYM_CONF_DMA_ADDRESSING_MODE == 2
1509 #define DMA_DAC_MASK DMA_64BIT_MASK
1511 if ((np->features & FE_DAC) &&
1512 !pci_set_dma_mask(np->s.device, DMA_DAC_MASK)) {
1518 if (!pci_set_dma_mask(np->s.device, DMA_32BIT_MASK))
1521 printf_warning("%s: No suitable DMA available\n", sym_name(np));
1526 * Host attach and initialisations.
1528 * Allocate host data and ncb structure.
1529 * Remap MMIO region.
1530 * Do chip initialization.
1531 * If all is OK, install interrupt handling and
1532 * start the timer daemon.
1534 static struct Scsi_Host * __devinit sym_attach(struct scsi_host_template *tpnt,
1535 int unit, struct sym_device *dev)
1537 struct host_data *host_data;
1538 struct sym_hcb *np = NULL;
1539 struct Scsi_Host *instance = NULL;
1540 struct pci_dev *pdev = dev->pdev;
1541 unsigned long flags;
1545 "sym%d: <%s> rev 0x%x at pci %s irq " IRQ_FMT "\n",
1546 unit, dev->chip.name, dev->chip.revision_id,
1547 pci_name(pdev), IRQ_PRM(pdev->irq));
1550 * Get the firmware for this chip.
1552 fw = sym_find_firmware(&dev->chip);
1557 * Allocate host_data structure
1559 instance = scsi_host_alloc(tpnt, sizeof(*host_data));
1562 host_data = (struct host_data *) instance->hostdata;
1565 * Allocate immediately the host control block,
1566 * since we are only expecting to succeed. :)
1567 * We keep track in the HCB of all the resources that
1568 * are to be released on error.
1570 np = __sym_calloc_dma(&pdev->dev, sizeof(*np), "HCB");
1573 np->s.device = pdev;
1574 np->bus_dmat = &pdev->dev; /* Result in 1 DMA pool per HBA */
1575 host_data->ncb = np;
1576 np->s.host = instance;
1578 pci_set_drvdata(pdev, np);
1581 * Copy some useful infos to the HCB.
1583 np->hcb_ba = vtobus(np);
1584 np->verbose = sym_driver_setup.verbose;
1585 np->s.device = pdev;
1587 np->device_id = dev->chip.device_id;
1588 np->revision_id = dev->chip.revision_id;
1589 np->features = dev->chip.features;
1590 np->clock_divn = dev->chip.nr_divisor;
1591 np->maxoffs = dev->chip.offset_max;
1592 np->maxburst = dev->chip.burst_max;
1593 np->myaddr = dev->host_id;
1598 strlcpy(np->s.chip_name, dev->chip.name, sizeof(np->s.chip_name));
1599 sprintf(np->s.inst_name, "sym%d", np->s.unit);
1601 if (sym_setup_bus_dma_mask(np))
1605 * Try to map the controller chip to
1606 * virtual and physical memory.
1608 np->mmio_ba = (u32)dev->mmio_base;
1609 np->s.ioaddr = dev->s.ioaddr;
1610 np->s.ramaddr = dev->s.ramaddr;
1611 np->s.io_ws = (np->features & FE_IO256) ? 256 : 128;
1614 * Map on-chip RAM if present and supported.
1616 if (!(np->features & FE_RAM))
1618 if (dev->ram_base) {
1619 np->ram_ba = (u32)dev->ram_base;
1620 np->ram_ws = (np->features & FE_RAM8K) ? 8192 : 4096;
1623 if (sym_hcb_attach(instance, fw, dev->nvram))
1627 * Install the interrupt handler.
1628 * If we synchonize the C code with SCRIPTS on interrupt,
1629 * we do not want to share the INTR line at all.
1631 if (request_irq(pdev->irq, sym53c8xx_intr, SA_SHIRQ, NAME53C8XX, np)) {
1632 printf_err("%s: request irq %d failure\n",
1633 sym_name(np), pdev->irq);
1636 np->s.irq = pdev->irq;
1639 * After SCSI devices have been opened, we cannot
1640 * reset the bus safely, so we do it here.
1642 spin_lock_irqsave(instance->host_lock, flags);
1643 if (sym_reset_scsi_bus(np, 0))
1647 * Start the SCRIPTS.
1649 sym_start_up (np, 1);
1652 * Start the timer daemon
1654 init_timer(&np->s.timer);
1655 np->s.timer.data = (unsigned long) np;
1656 np->s.timer.function = sym53c8xx_timer;
1661 * Fill Linux host instance structure
1662 * and return success.
1664 instance->max_channel = 0;
1665 instance->this_id = np->myaddr;
1666 instance->max_id = np->maxwide ? 16 : 8;
1667 instance->max_lun = SYM_CONF_MAX_LUN;
1668 instance->unique_id = pci_resource_start(pdev, 0);
1669 instance->cmd_per_lun = SYM_CONF_MAX_TAG;
1670 instance->can_queue = (SYM_CONF_MAX_START-2);
1671 instance->sg_tablesize = SYM_CONF_MAX_SG;
1672 instance->max_cmd_len = 16;
1673 BUG_ON(sym2_transport_template == NULL);
1674 instance->transportt = sym2_transport_template;
1676 spin_unlock_irqrestore(instance->host_lock, flags);
1681 printf_err("%s: FATAL ERROR: CHECK SCSI BUS - CABLES, "
1682 "TERMINATION, DEVICE POWER etc.!\n", sym_name(np));
1683 spin_unlock_irqrestore(instance->host_lock, flags);
1687 printf_info("%s: giving up ...\n", sym_name(np));
1689 sym_free_resources(np, pdev);
1690 scsi_host_put(instance);
1697 * Detect and try to read SYMBIOS and TEKRAM NVRAM.
1699 #if SYM_CONF_NVRAM_SUPPORT
1700 static void __devinit sym_get_nvram(struct sym_device *devp, struct sym_nvram *nvp)
1703 devp->device_id = devp->chip.device_id;
1706 sym_read_nvram(devp, nvp);
1709 static inline void sym_get_nvram(struct sym_device *devp, struct sym_nvram *nvp)
1712 #endif /* SYM_CONF_NVRAM_SUPPORT */
1714 static int __devinit sym_check_supported(struct sym_device *device)
1716 struct sym_chip *chip;
1717 struct pci_dev *pdev = device->pdev;
1719 unsigned long io_port = pci_resource_start(pdev, 0);
1723 * If user excluded this chip, do not initialize it.
1724 * I hate this code so much. Must kill it.
1727 for (i = 0 ; i < 8 ; i++) {
1728 if (sym_driver_setup.excludes[i] == io_port)
1734 * Check if the chip is supported. Then copy the chip description
1735 * to our device structure so we can make it match the actual device
1738 pci_read_config_byte(pdev, PCI_CLASS_REVISION, &revision);
1739 chip = sym_lookup_chip_table(pdev->device, revision);
1741 dev_info(&pdev->dev, "device not supported\n");
1744 memcpy(&device->chip, chip, sizeof(device->chip));
1745 device->chip.revision_id = revision;
1751 * Ignore Symbios chips controlled by various RAID controllers.
1752 * These controllers set value 0x52414944 at RAM end - 16.
1754 static int __devinit sym_check_raid(struct sym_device *device)
1756 unsigned int ram_size, ram_val;
1758 if (!device->s.ramaddr)
1761 if (device->chip.features & FE_RAM8K)
1766 ram_val = readl(device->s.ramaddr + ram_size - 16);
1767 if (ram_val != 0x52414944)
1770 dev_info(&device->pdev->dev,
1771 "not initializing, driven by RAID controller.\n");
1775 static int __devinit sym_set_workarounds(struct sym_device *device)
1777 struct sym_chip *chip = &device->chip;
1778 struct pci_dev *pdev = device->pdev;
1782 * (ITEM 12 of a DEL about the 896 I haven't yet).
1783 * We must ensure the chip will use WRITE AND INVALIDATE.
1784 * The revision number limit is for now arbitrary.
1786 if (pdev->device == PCI_DEVICE_ID_NCR_53C896 && chip->revision_id < 0x4) {
1787 chip->features |= (FE_WRIE | FE_CLSE);
1790 /* If the chip can do Memory Write Invalidate, enable it */
1791 if (chip->features & FE_WRIE) {
1792 if (pci_set_mwi(pdev))
1797 * Work around for errant bit in 895A. The 66Mhz
1798 * capable bit is set erroneously. Clear this bit.
1801 * Make sure Config space and Features agree.
1803 * Recall: writes are not normal to status register -
1804 * write a 1 to clear and a 0 to leave unchanged.
1805 * Can only reset bits.
1807 pci_read_config_word(pdev, PCI_STATUS, &status_reg);
1808 if (chip->features & FE_66MHZ) {
1809 if (!(status_reg & PCI_STATUS_66MHZ))
1810 chip->features &= ~FE_66MHZ;
1812 if (status_reg & PCI_STATUS_66MHZ) {
1813 status_reg = PCI_STATUS_66MHZ;
1814 pci_write_config_word(pdev, PCI_STATUS, status_reg);
1815 pci_read_config_word(pdev, PCI_STATUS, &status_reg);
1823 * Read and check the PCI configuration for any detected NCR
1824 * boards and save data for attaching after all boards have
1827 static void __devinit
1828 sym_init_device(struct pci_dev *pdev, struct sym_device *device)
1831 struct pci_bus_region bus_addr;
1833 device->host_id = SYM_SETUP_HOST_ID;
1834 device->pdev = pdev;
1836 pcibios_resource_to_bus(pdev, &bus_addr, &pdev->resource[1]);
1837 device->mmio_base = bus_addr.start;
1840 * If the BAR is 64-bit, resource 2 will be occupied by the
1843 if (!pdev->resource[i].flags)
1845 pcibios_resource_to_bus(pdev, &bus_addr, &pdev->resource[i]);
1846 device->ram_base = bus_addr.start;
1848 #ifdef CONFIG_SCSI_SYM53C8XX_MMIO
1849 if (device->mmio_base)
1850 device->s.ioaddr = pci_iomap(pdev, 1,
1851 pci_resource_len(pdev, 1));
1853 if (!device->s.ioaddr)
1854 device->s.ioaddr = pci_iomap(pdev, 0,
1855 pci_resource_len(pdev, 0));
1856 if (device->ram_base)
1857 device->s.ramaddr = pci_iomap(pdev, i,
1858 pci_resource_len(pdev, i));
1862 * The NCR PQS and PDS cards are constructed as a DEC bridge
1863 * behind which sits a proprietary NCR memory controller and
1864 * either four or two 53c875s as separate devices. We can tell
1865 * if an 875 is part of a PQS/PDS or not since if it is, it will
1866 * be on the same bus as the memory controller. In its usual
1867 * mode of operation, the 875s are slaved to the memory
1868 * controller for all transfers. To operate with the Linux
1869 * driver, the memory controller is disabled and the 875s
1870 * freed to function independently. The only wrinkle is that
1871 * the preset SCSI ID (which may be zero) must be read in from
1872 * a special configuration space register of the 875.
1874 static void sym_config_pqs(struct pci_dev *pdev, struct sym_device *sym_dev)
1879 for (slot = 0; slot < 256; slot++) {
1880 struct pci_dev *memc = pci_get_slot(pdev->bus, slot);
1882 if (!memc || memc->vendor != 0x101a || memc->device == 0x0009) {
1887 /* bit 1: allow individual 875 configuration */
1888 pci_read_config_byte(memc, 0x44, &tmp);
1889 if ((tmp & 0x2) == 0) {
1891 pci_write_config_byte(memc, 0x44, tmp);
1894 /* bit 2: drive individual 875 interrupts to the bus */
1895 pci_read_config_byte(memc, 0x45, &tmp);
1896 if ((tmp & 0x4) == 0) {
1898 pci_write_config_byte(memc, 0x45, tmp);
1905 pci_read_config_byte(pdev, 0x84, &tmp);
1906 sym_dev->host_id = tmp;
1910 * Called before unloading the module.
1912 * We have to free resources and halt the NCR chip.
1914 static int sym_detach(struct sym_hcb *np, struct pci_dev *pdev)
1916 printk("%s: detaching ...\n", sym_name(np));
1918 del_timer_sync(&np->s.timer);
1922 * We should use sym_soft_reset(), but we don't want to do
1923 * so, since we may not be safe if interrupts occur.
1925 printk("%s: resetting chip\n", sym_name(np));
1926 OUTB(np, nc_istat, SRST);
1929 OUTB(np, nc_istat, 0);
1931 sym_free_resources(np, pdev);
1937 * Driver host template.
1939 static struct scsi_host_template sym2_template = {
1940 .module = THIS_MODULE,
1941 .name = "sym53c8xx",
1942 .info = sym53c8xx_info,
1943 .queuecommand = sym53c8xx_queue_command,
1944 .slave_alloc = sym53c8xx_slave_alloc,
1945 .slave_configure = sym53c8xx_slave_configure,
1946 .slave_destroy = sym53c8xx_slave_destroy,
1947 .eh_abort_handler = sym53c8xx_eh_abort_handler,
1948 .eh_device_reset_handler = sym53c8xx_eh_device_reset_handler,
1949 .eh_bus_reset_handler = sym53c8xx_eh_bus_reset_handler,
1950 .eh_host_reset_handler = sym53c8xx_eh_host_reset_handler,
1952 .use_clustering = DISABLE_CLUSTERING,
1953 #ifdef SYM_LINUX_PROC_INFO_SUPPORT
1954 .proc_info = sym53c8xx_proc_info,
1955 .proc_name = NAME53C8XX,
1959 static int attach_count;
1961 static int __devinit sym2_probe(struct pci_dev *pdev,
1962 const struct pci_device_id *ent)
1964 struct sym_device sym_dev;
1965 struct sym_nvram nvram;
1966 struct Scsi_Host *instance;
1968 memset(&sym_dev, 0, sizeof(sym_dev));
1969 memset(&nvram, 0, sizeof(nvram));
1971 if (pci_enable_device(pdev))
1974 pci_set_master(pdev);
1976 if (pci_request_regions(pdev, NAME53C8XX))
1979 sym_init_device(pdev, &sym_dev);
1980 if (sym_check_supported(&sym_dev))
1983 if (sym_check_raid(&sym_dev))
1984 goto leave; /* Don't disable the device */
1986 if (sym_set_workarounds(&sym_dev))
1989 sym_config_pqs(pdev, &sym_dev);
1991 sym_get_nvram(&sym_dev, &nvram);
1993 instance = sym_attach(&sym2_template, attach_count, &sym_dev);
1997 if (scsi_add_host(instance, &pdev->dev))
1999 scsi_scan_host(instance);
2006 sym_detach(pci_get_drvdata(pdev), pdev);
2008 pci_release_regions(pdev);
2010 pci_disable_device(pdev);
2015 static void __devexit sym2_remove(struct pci_dev *pdev)
2017 struct sym_hcb *np = pci_get_drvdata(pdev);
2018 struct Scsi_Host *host = np->s.host;
2020 scsi_remove_host(host);
2021 scsi_host_put(host);
2023 sym_detach(np, pdev);
2025 pci_release_regions(pdev);
2026 pci_disable_device(pdev);
2031 static void sym2_get_signalling(struct Scsi_Host *shost)
2033 struct sym_hcb *np = sym_get_hcb(shost);
2034 enum spi_signal_type type;
2036 switch (np->scsi_mode) {
2038 type = SPI_SIGNAL_SE;
2041 type = SPI_SIGNAL_LVD;
2044 type = SPI_SIGNAL_HVD;
2047 type = SPI_SIGNAL_UNKNOWN;
2050 spi_signalling(shost) = type;
2053 static void sym2_set_offset(struct scsi_target *starget, int offset)
2055 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2056 struct sym_hcb *np = sym_get_hcb(shost);
2057 struct sym_tcb *tp = &np->target[starget->id];
2059 tp->tgoal.offset = offset;
2060 tp->tgoal.check_nego = 1;
2063 static void sym2_set_period(struct scsi_target *starget, int period)
2065 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2066 struct sym_hcb *np = sym_get_hcb(shost);
2067 struct sym_tcb *tp = &np->target[starget->id];
2069 /* have to have DT for these transfers, but DT will also
2070 * set width, so check that this is allowed */
2071 if (period <= np->minsync && spi_width(starget))
2074 tp->tgoal.period = period;
2075 tp->tgoal.check_nego = 1;
2078 static void sym2_set_width(struct scsi_target *starget, int width)
2080 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2081 struct sym_hcb *np = sym_get_hcb(shost);
2082 struct sym_tcb *tp = &np->target[starget->id];
2084 /* It is illegal to have DT set on narrow transfers. If DT is
2085 * clear, we must also clear IU and QAS. */
2087 tp->tgoal.iu = tp->tgoal.dt = tp->tgoal.qas = 0;
2089 tp->tgoal.width = width;
2090 tp->tgoal.check_nego = 1;
2093 static void sym2_set_dt(struct scsi_target *starget, int dt)
2095 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2096 struct sym_hcb *np = sym_get_hcb(shost);
2097 struct sym_tcb *tp = &np->target[starget->id];
2099 /* We must clear QAS and IU if DT is clear */
2103 tp->tgoal.iu = tp->tgoal.dt = tp->tgoal.qas = 0;
2104 tp->tgoal.check_nego = 1;
2108 static void sym2_set_iu(struct scsi_target *starget, int iu)
2110 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2111 struct sym_hcb *np = sym_get_hcb(shost);
2112 struct sym_tcb *tp = &np->target[starget->id];
2115 tp->tgoal.iu = tp->tgoal.dt = 1;
2118 tp->tgoal.check_nego = 1;
2121 static void sym2_set_qas(struct scsi_target *starget, int qas)
2123 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2124 struct sym_hcb *np = sym_get_hcb(shost);
2125 struct sym_tcb *tp = &np->target[starget->id];
2128 tp->tgoal.dt = tp->tgoal.qas = 1;
2131 tp->tgoal.check_nego = 1;
2135 static struct spi_function_template sym2_transport_functions = {
2136 .set_offset = sym2_set_offset,
2138 .set_period = sym2_set_period,
2140 .set_width = sym2_set_width,
2142 .set_dt = sym2_set_dt,
2145 .set_iu = sym2_set_iu,
2147 .set_qas = sym2_set_qas,
2150 .get_signalling = sym2_get_signalling,
2153 static struct pci_device_id sym2_id_table[] __devinitdata = {
2154 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C810,
2155 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2156 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C820,
2157 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, /* new */
2158 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C825,
2159 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2160 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C815,
2161 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2162 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C810AP,
2163 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, /* new */
2164 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C860,
2165 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2166 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1510,
2167 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2168 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C896,
2169 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2170 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C895,
2171 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2172 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C885,
2173 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2174 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C875,
2175 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2176 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C1510,
2177 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, /* new */
2178 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C895A,
2179 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2180 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C875A,
2181 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2182 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1010_33,
2183 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2184 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1010_66,
2185 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2186 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C875J,
2187 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2191 MODULE_DEVICE_TABLE(pci, sym2_id_table);
2193 static struct pci_driver sym2_driver = {
2195 .id_table = sym2_id_table,
2196 .probe = sym2_probe,
2197 .remove = __devexit_p(sym2_remove),
2200 static int __init sym2_init(void)
2204 sym2_setup_params();
2205 sym2_transport_template = spi_attach_transport(&sym2_transport_functions);
2206 if (!sym2_transport_template)
2209 error = pci_register_driver(&sym2_driver);
2211 spi_release_transport(sym2_transport_template);
2215 static void __exit sym2_exit(void)
2217 pci_unregister_driver(&sym2_driver);
2218 spi_release_transport(sym2_transport_template);
2221 module_init(sym2_init);
2222 module_exit(sym2_exit);