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"
58 #define IRQ_PRM(x) (x)
60 struct sym_driver_setup sym_driver_setup
= SYM_LINUX_DRIVER_SETUP
;
61 unsigned int sym_debug_flags
= 0;
63 static char *excl_string
;
64 static char *safe_string
;
65 module_param_named(cmd_per_lun
, sym_driver_setup
.max_tag
, ushort
, 0);
66 module_param_string(tag_ctrl
, sym_driver_setup
.tag_ctrl
, 100, 0);
67 module_param_named(burst
, sym_driver_setup
.burst_order
, byte
, 0);
68 module_param_named(led
, sym_driver_setup
.scsi_led
, byte
, 0);
69 module_param_named(diff
, sym_driver_setup
.scsi_diff
, byte
, 0);
70 module_param_named(irqm
, sym_driver_setup
.irq_mode
, byte
, 0);
71 module_param_named(buschk
, sym_driver_setup
.scsi_bus_check
, byte
, 0);
72 module_param_named(hostid
, sym_driver_setup
.host_id
, byte
, 0);
73 module_param_named(verb
, sym_driver_setup
.verbose
, byte
, 0);
74 module_param_named(debug
, sym_debug_flags
, uint
, 0);
75 module_param_named(settle
, sym_driver_setup
.settle_delay
, byte
, 0);
76 module_param_named(nvram
, sym_driver_setup
.use_nvram
, byte
, 0);
77 module_param_named(excl
, excl_string
, charp
, 0);
78 module_param_named(safe
, safe_string
, charp
, 0);
80 MODULE_PARM_DESC(cmd_per_lun
, "The maximum number of tags to use by default");
81 MODULE_PARM_DESC(tag_ctrl
, "More detailed control over tags per LUN");
82 MODULE_PARM_DESC(burst
, "Maximum burst. 0 to disable, 255 to read from registers");
83 MODULE_PARM_DESC(led
, "Set to 1 to enable LED support");
84 MODULE_PARM_DESC(diff
, "0 for no differential mode, 1 for BIOS, 2 for always, 3 for not GPIO3");
85 MODULE_PARM_DESC(irqm
, "0 for open drain, 1 to leave alone, 2 for totem pole");
86 MODULE_PARM_DESC(buschk
, "0 to not check, 1 for detach on error, 2 for warn on error");
87 MODULE_PARM_DESC(hostid
, "The SCSI ID to use for the host adapters");
88 MODULE_PARM_DESC(verb
, "0 for minimal verbosity, 1 for normal, 2 for excessive");
89 MODULE_PARM_DESC(debug
, "Set bits to enable debugging");
90 MODULE_PARM_DESC(settle
, "Settle delay in seconds. Default 3");
91 MODULE_PARM_DESC(nvram
, "Option currently not used");
92 MODULE_PARM_DESC(excl
, "List ioport addresses here to prevent controllers from being attached");
93 MODULE_PARM_DESC(safe
, "Set other settings to a \"safe mode\"");
95 MODULE_LICENSE("GPL");
96 MODULE_VERSION(SYM_VERSION
);
97 MODULE_AUTHOR("Matthew Wilcox <matthew@wil.cx>");
98 MODULE_DESCRIPTION("NCR, Symbios and LSI 8xx and 1010 PCI SCSI adapters");
100 static void sym2_setup_params(void)
102 char *p
= excl_string
;
105 while (p
&& (xi
< 8)) {
107 int val
= (int) simple_strtoul(p
, &next_p
, 0);
108 sym_driver_setup
.excludes
[xi
++] = val
;
113 if (*safe_string
== 'y') {
114 sym_driver_setup
.max_tag
= 0;
115 sym_driver_setup
.burst_order
= 0;
116 sym_driver_setup
.scsi_led
= 0;
117 sym_driver_setup
.scsi_diff
= 1;
118 sym_driver_setup
.irq_mode
= 0;
119 sym_driver_setup
.scsi_bus_check
= 2;
120 sym_driver_setup
.host_id
= 7;
121 sym_driver_setup
.verbose
= 2;
122 sym_driver_setup
.settle_delay
= 10;
123 sym_driver_setup
.use_nvram
= 1;
124 } else if (*safe_string
!= 'n') {
125 printk(KERN_WARNING NAME53C8XX
"Ignoring parameter %s"
126 " passed to safe option", safe_string
);
131 static struct scsi_transport_template
*sym2_transport_template
= NULL
;
134 * Driver private area in the SCSI command structure.
136 struct sym_ucmd
{ /* Override the SCSI pointer structure */
137 struct completion
*eh_done
; /* SCSI error handling */
140 #define SYM_UCMD_PTR(cmd) ((struct sym_ucmd *)(&(cmd)->SCp))
141 #define SYM_SOFTC_PTR(cmd) sym_get_hcb(cmd->device->host)
144 * Complete a pending CAM CCB.
146 void sym_xpt_done(struct sym_hcb
*np
, struct scsi_cmnd
*cmd
)
148 struct sym_ucmd
*ucmd
= SYM_UCMD_PTR(cmd
);
149 BUILD_BUG_ON(sizeof(struct scsi_pointer
) < sizeof(struct sym_ucmd
));
152 complete(ucmd
->eh_done
);
159 * Tell the SCSI layer about a BUS RESET.
161 void sym_xpt_async_bus_reset(struct sym_hcb
*np
)
163 printf_notice("%s: SCSI BUS has been reset.\n", sym_name(np
));
164 np
->s
.settle_time
= jiffies
+ sym_driver_setup
.settle_delay
* HZ
;
165 np
->s
.settle_time_valid
= 1;
166 if (sym_verbose
>= 2)
167 printf_info("%s: command processing suspended for %d seconds\n",
168 sym_name(np
), sym_driver_setup
.settle_delay
);
172 * Tell the SCSI layer about a BUS DEVICE RESET message sent.
174 void sym_xpt_async_sent_bdr(struct sym_hcb
*np
, int target
)
176 printf_notice("%s: TARGET %d has been reset.\n", sym_name(np
), target
);
180 * Choose the more appropriate CAM status if
181 * the IO encountered an extended error.
183 static int sym_xerr_cam_status(int cam_status
, int x_status
)
186 if (x_status
& XE_PARITY_ERR
)
187 cam_status
= DID_PARITY
;
188 else if (x_status
&(XE_EXTRA_DATA
|XE_SODL_UNRUN
|XE_SWIDE_OVRUN
))
189 cam_status
= DID_ERROR
;
190 else if (x_status
& XE_BAD_PHASE
)
191 cam_status
= DID_ERROR
;
193 cam_status
= DID_ERROR
;
199 * Build CAM result for a failed or auto-sensed IO.
201 void sym_set_cam_result_error(struct sym_hcb
*np
, struct sym_ccb
*cp
, int resid
)
203 struct scsi_cmnd
*cmd
= cp
->cmd
;
204 u_int cam_status
, scsi_status
, drv_status
;
208 scsi_status
= cp
->ssss_status
;
210 if (cp
->host_flags
& HF_SENSE
) {
211 scsi_status
= cp
->sv_scsi_status
;
212 resid
= cp
->sv_resid
;
213 if (sym_verbose
&& cp
->sv_xerr_status
)
214 sym_print_xerr(cmd
, cp
->sv_xerr_status
);
215 if (cp
->host_status
== HS_COMPLETE
&&
216 cp
->ssss_status
== S_GOOD
&&
217 cp
->xerr_status
== 0) {
218 cam_status
= sym_xerr_cam_status(DID_OK
,
220 drv_status
= DRIVER_SENSE
;
222 * Bounce back the sense data to user.
224 memset(&cmd
->sense_buffer
, 0, sizeof(cmd
->sense_buffer
));
225 memcpy(cmd
->sense_buffer
, cp
->sns_bbuf
,
226 min(sizeof(cmd
->sense_buffer
),
227 (size_t)SYM_SNS_BBUF_LEN
));
230 * If the device reports a UNIT ATTENTION condition
231 * due to a RESET condition, we should consider all
232 * disconnect CCBs for this unit as aborted.
236 p
= (u_char
*) cmd
->sense_data
;
237 if (p
[0]==0x70 && p
[2]==0x6 && p
[12]==0x29)
238 sym_clear_tasks(np
, DID_ABORT
,
239 cp
->target
,cp
->lun
, -1);
244 * Error return from our internal request sense. This
245 * is bad: we must clear the contingent allegiance
246 * condition otherwise the device will always return
247 * BUSY. Use a big stick.
249 sym_reset_scsi_target(np
, cmd
->device
->id
);
250 cam_status
= DID_ERROR
;
252 } else if (cp
->host_status
== HS_COMPLETE
) /* Bad SCSI status */
254 else if (cp
->host_status
== HS_SEL_TIMEOUT
) /* Selection timeout */
255 cam_status
= DID_NO_CONNECT
;
256 else if (cp
->host_status
== HS_UNEXPECTED
) /* Unexpected BUS FREE*/
257 cam_status
= DID_ERROR
;
258 else { /* Extended error */
260 sym_print_addr(cmd
, "COMMAND FAILED (%x %x %x).\n",
261 cp
->host_status
, cp
->ssss_status
,
265 * Set the most appropriate value for CAM status.
267 cam_status
= sym_xerr_cam_status(DID_ERROR
, cp
->xerr_status
);
269 scsi_set_resid(cmd
, resid
);
270 cmd
->result
= (drv_status
<< 24) + (cam_status
<< 16) + scsi_status
;
273 static int sym_scatter(struct sym_hcb
*np
, struct sym_ccb
*cp
, struct scsi_cmnd
*cmd
)
280 use_sg
= scsi_dma_map(cmd
);
282 struct scatterlist
*sg
;
283 struct sym_tcb
*tp
= &np
->target
[cp
->target
];
284 struct sym_tblmove
*data
;
286 if (use_sg
> SYM_CONF_MAX_SG
) {
291 data
= &cp
->phys
.data
[SYM_CONF_MAX_SG
- use_sg
];
293 scsi_for_each_sg(cmd
, sg
, use_sg
, segment
) {
294 dma_addr_t baddr
= sg_dma_address(sg
);
295 unsigned int len
= sg_dma_len(sg
);
297 if ((len
& 1) && (tp
->head
.wval
& EWS
)) {
299 cp
->odd_byte_adjustment
++;
302 sym_build_sge(np
, &data
[segment
], baddr
, len
);
313 * Queue a SCSI command.
315 static int sym_queue_command(struct sym_hcb
*np
, struct scsi_cmnd
*cmd
)
317 struct scsi_device
*sdev
= cmd
->device
;
324 * Retrieve the target descriptor.
326 tp
= &np
->target
[sdev
->id
];
329 * Select tagged/untagged.
331 lp
= sym_lp(tp
, sdev
->lun
);
332 order
= (lp
&& lp
->s
.reqtags
) ? M_SIMPLE_TAG
: 0;
337 cp
= sym_get_ccb(np
, cmd
, order
);
339 return 1; /* Means resource shortage */
340 sym_queue_scsiio(np
, cmd
, cp
);
345 * Setup buffers and pointers that address the CDB.
347 static inline int sym_setup_cdb(struct sym_hcb
*np
, struct scsi_cmnd
*cmd
, struct sym_ccb
*cp
)
349 memcpy(cp
->cdb_buf
, cmd
->cmnd
, cmd
->cmd_len
);
351 cp
->phys
.cmd
.addr
= CCB_BA(cp
, cdb_buf
[0]);
352 cp
->phys
.cmd
.size
= cpu_to_scr(cmd
->cmd_len
);
358 * Setup pointers that address the data and start the I/O.
360 int sym_setup_data_and_start(struct sym_hcb
*np
, struct scsi_cmnd
*cmd
, struct sym_ccb
*cp
)
368 if (sym_setup_cdb(np
, cmd
, cp
))
372 * No direction means no data.
374 dir
= cmd
->sc_data_direction
;
375 if (dir
!= DMA_NONE
) {
376 cp
->segments
= sym_scatter(np
, cp
, cmd
);
377 if (cp
->segments
< 0) {
378 sym_set_cam_status(cmd
, DID_ERROR
);
383 * No segments means no data.
393 * Set the data pointer.
396 case DMA_BIDIRECTIONAL
:
397 printk("%s: got DMA_BIDIRECTIONAL command", sym_name(np
));
398 sym_set_cam_status(cmd
, DID_ERROR
);
401 goalp
= SCRIPTA_BA(np
, data_out2
) + 8;
402 lastp
= goalp
- 8 - (cp
->segments
* (2*4));
404 case DMA_FROM_DEVICE
:
405 cp
->host_flags
|= HF_DATA_IN
;
406 goalp
= SCRIPTA_BA(np
, data_in2
) + 8;
407 lastp
= goalp
- 8 - (cp
->segments
* (2*4));
411 lastp
= goalp
= SCRIPTB_BA(np
, no_data
);
416 * Set all pointers values needed by SCRIPTS.
418 cp
->phys
.head
.lastp
= cpu_to_scr(lastp
);
419 cp
->phys
.head
.savep
= cpu_to_scr(lastp
);
420 cp
->startp
= cp
->phys
.head
.savep
;
421 cp
->goalp
= cpu_to_scr(goalp
);
424 * When `#ifed 1', the code below makes the driver
425 * panic on the first attempt to write to a SCSI device.
426 * It is the first test we want to do after a driver
427 * change that does not seem obviously safe. :)
430 switch (cp
->cdb_buf
[0]) {
431 case 0x0A: case 0x2A: case 0xAA:
432 panic("XXXXXXXXXXXXX WRITE NOT YET ALLOWED XXXXXXXXXXXXXX\n");
442 sym_put_start_queue(np
, cp
);
446 sym_free_ccb(np
, cp
);
447 sym_xpt_done(np
, cmd
);
455 * Misused to keep the driver running when
456 * interrupts are not configured correctly.
458 static void sym_timer(struct sym_hcb
*np
)
460 unsigned long thistime
= jiffies
;
465 np
->s
.timer
.expires
= thistime
+ SYM_CONF_TIMER_INTERVAL
;
466 add_timer(&np
->s
.timer
);
469 * If we are resetting the ncr, wait for settle_time before
470 * clearing it. Then command processing will be resumed.
472 if (np
->s
.settle_time_valid
) {
473 if (time_before_eq(np
->s
.settle_time
, thistime
)) {
474 if (sym_verbose
>= 2 )
475 printk("%s: command processing resumed\n",
477 np
->s
.settle_time_valid
= 0;
483 * Nothing to do for now, but that may come.
485 if (np
->s
.lasttime
+ 4*HZ
< thistime
) {
486 np
->s
.lasttime
= thistime
;
489 #ifdef SYM_CONF_PCIQ_MAY_MISS_COMPLETIONS
491 * Some way-broken PCI bridges may lead to
492 * completions being lost when the clearing
493 * of the INTFLY flag by the CPU occurs
494 * concurrently with the chip raising this flag.
495 * If this ever happen, lost completions will
504 * PCI BUS error handler.
506 void sym_log_bus_error(struct sym_hcb
*np
)
509 pci_read_config_word(np
->s
.device
, PCI_STATUS
, &pci_sts
);
510 if (pci_sts
& 0xf900) {
511 pci_write_config_word(np
->s
.device
, PCI_STATUS
, pci_sts
);
512 printf("%s: PCI STATUS = 0x%04x\n",
513 sym_name(np
), pci_sts
& 0xf900);
518 * queuecommand method. Entered with the host adapter lock held and
519 * interrupts disabled.
521 static int sym53c8xx_queue_command(struct scsi_cmnd
*cmd
,
522 void (*done
)(struct scsi_cmnd
*))
524 struct sym_hcb
*np
= SYM_SOFTC_PTR(cmd
);
525 struct sym_ucmd
*ucp
= SYM_UCMD_PTR(cmd
);
528 cmd
->scsi_done
= done
;
529 memset(ucp
, 0, sizeof(*ucp
));
532 * Shorten our settle_time if needed for
533 * this command not to time out.
535 if (np
->s
.settle_time_valid
&& cmd
->timeout_per_command
) {
536 unsigned long tlimit
= jiffies
+ cmd
->timeout_per_command
;
537 tlimit
-= SYM_CONF_TIMER_INTERVAL
*2;
538 if (time_after(np
->s
.settle_time
, tlimit
)) {
539 np
->s
.settle_time
= tlimit
;
543 if (np
->s
.settle_time_valid
)
544 return SCSI_MLQUEUE_HOST_BUSY
;
546 sts
= sym_queue_command(np
, cmd
);
548 return SCSI_MLQUEUE_HOST_BUSY
;
553 * Linux entry point of the interrupt handler.
555 static irqreturn_t
sym53c8xx_intr(int irq
, void *dev_id
)
557 struct sym_hcb
*np
= dev_id
;
559 /* Avoid spinloop trying to handle interrupts on frozen device */
560 if (pci_channel_offline(np
->s
.device
))
563 if (DEBUG_FLAGS
& DEBUG_TINY
) printf_debug ("[");
565 spin_lock(np
->s
.host
->host_lock
);
567 spin_unlock(np
->s
.host
->host_lock
);
569 if (DEBUG_FLAGS
& DEBUG_TINY
) printf_debug ("]\n");
575 * Linux entry point of the timer handler
577 static void sym53c8xx_timer(unsigned long npref
)
579 struct sym_hcb
*np
= (struct sym_hcb
*)npref
;
582 spin_lock_irqsave(np
->s
.host
->host_lock
, flags
);
584 spin_unlock_irqrestore(np
->s
.host
->host_lock
, flags
);
589 * What the eh thread wants us to perform.
591 #define SYM_EH_ABORT 0
592 #define SYM_EH_DEVICE_RESET 1
593 #define SYM_EH_BUS_RESET 2
594 #define SYM_EH_HOST_RESET 3
597 * Generic method for our eh processing.
598 * The 'op' argument tells what we have to do.
600 static int sym_eh_handler(int op
, char *opname
, struct scsi_cmnd
*cmd
)
602 struct sym_hcb
*np
= SYM_SOFTC_PTR(cmd
);
603 struct sym_ucmd
*ucmd
= SYM_UCMD_PTR(cmd
);
604 struct Scsi_Host
*host
= cmd
->device
->host
;
605 struct pci_dev
*pdev
= np
->s
.device
;
609 struct completion eh_done
;
611 dev_warn(&cmd
->device
->sdev_gendev
, "%s operation started.\n", opname
);
613 /* We may be in an error condition because the PCI bus
614 * went down. In this case, we need to wait until the
615 * PCI bus is reset, the card is reset, and only then
616 * proceed with the scsi error recovery. There's no
617 * point in hurrying; take a leisurely wait.
619 #define WAIT_FOR_PCI_RECOVERY 35
620 if (pci_channel_offline(pdev
)) {
621 struct host_data
*hostdata
= shost_priv(host
);
622 struct completion
*io_reset
;
623 int finished_reset
= 0;
624 init_completion(&eh_done
);
625 spin_lock_irq(host
->host_lock
);
626 /* Make sure we didn't race */
627 if (pci_channel_offline(pdev
)) {
628 if (!hostdata
->io_reset
)
629 hostdata
->io_reset
= &eh_done
;
630 io_reset
= hostdata
->io_reset
;
635 if (!pci_channel_offline(pdev
))
637 spin_unlock_irq(host
->host_lock
);
639 finished_reset
= wait_for_completion_timeout(io_reset
,
640 WAIT_FOR_PCI_RECOVERY
*HZ
);
645 spin_lock_irq(host
->host_lock
);
646 /* This one is queued in some place -> to wait for completion */
647 FOR_EACH_QUEUED_ELEMENT(&np
->busy_ccbq
, qp
) {
648 struct sym_ccb
*cp
= sym_que_entry(qp
, struct sym_ccb
, link_ccbq
);
649 if (cp
->cmd
== cmd
) {
655 /* Try to proceed the operation we have been asked for */
659 sts
= sym_abort_scsiio(np
, cmd
, 1);
661 case SYM_EH_DEVICE_RESET
:
662 sts
= sym_reset_scsi_target(np
, cmd
->device
->id
);
664 case SYM_EH_BUS_RESET
:
665 sym_reset_scsi_bus(np
, 1);
668 case SYM_EH_HOST_RESET
:
669 sym_reset_scsi_bus(np
, 0);
677 /* On error, restore everything and cross fingers :) */
682 init_completion(&eh_done
);
683 ucmd
->eh_done
= &eh_done
;
684 spin_unlock_irq(host
->host_lock
);
685 if (!wait_for_completion_timeout(&eh_done
, 5*HZ
)) {
686 ucmd
->eh_done
= NULL
;
690 spin_unlock_irq(host
->host_lock
);
693 dev_warn(&cmd
->device
->sdev_gendev
, "%s operation %s.\n", opname
,
694 sts
==0 ? "complete" :sts
==-2 ? "timed-out" : "failed");
695 return sts
? SCSI_FAILED
: SCSI_SUCCESS
;
700 * Error handlers called from the eh thread (one thread per HBA).
702 static int sym53c8xx_eh_abort_handler(struct scsi_cmnd
*cmd
)
704 return sym_eh_handler(SYM_EH_ABORT
, "ABORT", cmd
);
707 static int sym53c8xx_eh_device_reset_handler(struct scsi_cmnd
*cmd
)
709 return sym_eh_handler(SYM_EH_DEVICE_RESET
, "DEVICE RESET", cmd
);
712 static int sym53c8xx_eh_bus_reset_handler(struct scsi_cmnd
*cmd
)
714 return sym_eh_handler(SYM_EH_BUS_RESET
, "BUS RESET", cmd
);
717 static int sym53c8xx_eh_host_reset_handler(struct scsi_cmnd
*cmd
)
719 return sym_eh_handler(SYM_EH_HOST_RESET
, "HOST RESET", cmd
);
723 * Tune device queuing depth, according to various limits.
725 static void sym_tune_dev_queuing(struct sym_tcb
*tp
, int lun
, u_short reqtags
)
727 struct sym_lcb
*lp
= sym_lp(tp
, lun
);
733 oldtags
= lp
->s
.reqtags
;
735 if (reqtags
> lp
->s
.scdev_depth
)
736 reqtags
= lp
->s
.scdev_depth
;
738 lp
->s
.reqtags
= reqtags
;
740 if (reqtags
!= oldtags
) {
741 dev_info(&tp
->starget
->dev
,
742 "tagged command queuing %s, command queue depth %d.\n",
743 lp
->s
.reqtags
? "enabled" : "disabled", reqtags
);
748 * Linux select queue depths function
750 #define DEF_DEPTH (sym_driver_setup.max_tag)
751 #define ALL_TARGETS -2
756 static int device_queue_depth(struct sym_hcb
*np
, int target
, int lun
)
759 char *p
= sym_driver_setup
.tag_ctrl
;
765 while ((c
= *p
++) != 0) {
766 v
= simple_strtoul(p
, &ep
, 0);
775 t
= (target
== v
) ? v
: NO_TARGET
;
780 u
= (lun
== v
) ? v
: NO_LUN
;
783 if (h
== np
->s
.unit
&&
784 (t
== ALL_TARGETS
|| t
== target
) &&
785 (u
== ALL_LUNS
|| u
== lun
))
800 static int sym53c8xx_slave_alloc(struct scsi_device
*sdev
)
802 struct sym_hcb
*np
= sym_get_hcb(sdev
->host
);
803 struct sym_tcb
*tp
= &np
->target
[sdev
->id
];
806 if (sdev
->id
>= SYM_CONF_MAX_TARGET
|| sdev
->lun
>= SYM_CONF_MAX_LUN
)
809 tp
->starget
= sdev
->sdev_target
;
811 * Fail the device init if the device is flagged NOSCAN at BOOT in
812 * the NVRAM. This may speed up boot and maintain coherency with
813 * BIOS device numbering. Clearing the flag allows the user to
814 * rescan skipped devices later. We also return an error for
815 * devices not flagged for SCAN LUNS in the NVRAM since some single
816 * lun devices behave badly when asked for a non zero LUN.
819 if (tp
->usrflags
& SYM_SCAN_BOOT_DISABLED
) {
820 tp
->usrflags
&= ~SYM_SCAN_BOOT_DISABLED
;
821 starget_printk(KERN_INFO
, tp
->starget
,
822 "Scan at boot disabled in NVRAM\n");
826 if (tp
->usrflags
& SYM_SCAN_LUNS_DISABLED
) {
829 starget_printk(KERN_INFO
, tp
->starget
,
830 "Multiple LUNs disabled in NVRAM\n");
833 lp
= sym_alloc_lcb(np
, sdev
->id
, sdev
->lun
);
837 spi_min_period(tp
->starget
) = tp
->usr_period
;
838 spi_max_width(tp
->starget
) = tp
->usr_width
;
844 * Linux entry point for device queue sizing.
846 static int sym53c8xx_slave_configure(struct scsi_device
*sdev
)
848 struct sym_hcb
*np
= sym_get_hcb(sdev
->host
);
849 struct sym_tcb
*tp
= &np
->target
[sdev
->id
];
850 struct sym_lcb
*lp
= sym_lp(tp
, sdev
->lun
);
851 int reqtags
, depth_to_use
;
856 lp
->curr_flags
= lp
->user_flags
;
859 * Select queue depth from driver setup.
860 * Donnot use more than configured by user.
862 * Donnot use more than our maximum.
864 reqtags
= device_queue_depth(np
, sdev
->id
, sdev
->lun
);
865 if (reqtags
> tp
->usrtags
)
866 reqtags
= tp
->usrtags
;
867 if (!sdev
->tagged_supported
)
869 #if 1 /* Avoid to locally queue commands for no good reasons */
870 if (reqtags
> SYM_CONF_MAX_TAG
)
871 reqtags
= SYM_CONF_MAX_TAG
;
872 depth_to_use
= (reqtags
? reqtags
: 2);
874 depth_to_use
= (reqtags
? SYM_CONF_MAX_TAG
: 2);
876 scsi_adjust_queue_depth(sdev
,
877 (sdev
->tagged_supported
?
880 lp
->s
.scdev_depth
= depth_to_use
;
881 sym_tune_dev_queuing(tp
, sdev
->lun
, reqtags
);
883 if (!spi_initial_dv(sdev
->sdev_target
))
889 static void sym53c8xx_slave_destroy(struct scsi_device
*sdev
)
891 struct sym_hcb
*np
= sym_get_hcb(sdev
->host
);
892 struct sym_lcb
*lp
= sym_lp(&np
->target
[sdev
->id
], sdev
->lun
);
895 sym_mfree_dma(lp
->itlq_tbl
, SYM_CONF_MAX_TASK
* 4, "ITLQ_TBL");
897 sym_mfree_dma(lp
, sizeof(*lp
), "LCB");
901 * Linux entry point for info() function
903 static const char *sym53c8xx_info (struct Scsi_Host
*host
)
905 return SYM_DRIVER_NAME
;
909 #ifdef SYM_LINUX_PROC_INFO_SUPPORT
911 * Proc file system stuff
913 * A read operation returns adapter information.
914 * A write operation is a control command.
915 * The string is parsed in the driver code and the command is passed
916 * to the sym_usercmd() function.
919 #ifdef SYM_LINUX_USER_COMMAND_SUPPORT
928 #define UC_SETSYNC 10
929 #define UC_SETTAGS 11
930 #define UC_SETDEBUG 12
931 #define UC_SETWIDE 14
932 #define UC_SETFLAG 15
933 #define UC_SETVERBOSE 17
934 #define UC_RESETDEV 18
935 #define UC_CLEARDEV 19
937 static void sym_exec_user_command (struct sym_hcb
*np
, struct sym_usrcmd
*uc
)
945 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT
947 sym_debug_flags
= uc
->data
;
951 np
->verbose
= uc
->data
;
955 * We assume that other commands apply to targets.
956 * This should always be the case and avoid the below
957 * 4 lines to be repeated 6 times.
959 for (t
= 0; t
< SYM_CONF_MAX_TARGET
; t
++) {
960 if (!((uc
->target
>> t
) & 1))
967 if (!uc
->data
|| uc
->data
>= 255) {
968 tp
->tgoal
.iu
= tp
->tgoal
.dt
=
970 tp
->tgoal
.offset
= 0;
971 } else if (uc
->data
<= 9 && np
->minsync_dt
) {
972 if (uc
->data
< np
->minsync_dt
)
973 uc
->data
= np
->minsync_dt
;
974 tp
->tgoal
.iu
= tp
->tgoal
.dt
=
977 tp
->tgoal
.period
= uc
->data
;
978 tp
->tgoal
.offset
= np
->maxoffs_dt
;
980 if (uc
->data
< np
->minsync
)
981 uc
->data
= np
->minsync
;
982 tp
->tgoal
.iu
= tp
->tgoal
.dt
=
984 tp
->tgoal
.period
= uc
->data
;
985 tp
->tgoal
.offset
= np
->maxoffs
;
987 tp
->tgoal
.check_nego
= 1;
990 tp
->tgoal
.width
= uc
->data
? 1 : 0;
991 tp
->tgoal
.check_nego
= 1;
994 for (l
= 0; l
< SYM_CONF_MAX_LUN
; l
++)
995 sym_tune_dev_queuing(tp
, l
, uc
->data
);
1000 OUTB(np
, nc_istat
, SIGP
|SEM
);
1003 for (l
= 0; l
< SYM_CONF_MAX_LUN
; l
++) {
1004 struct sym_lcb
*lp
= sym_lp(tp
, l
);
1005 if (lp
) lp
->to_clear
= 1;
1007 np
->istat_sem
= SEM
;
1008 OUTB(np
, nc_istat
, SIGP
|SEM
);
1011 tp
->usrflags
= uc
->data
;
1019 static int skip_spaces(char *ptr
, int len
)
1023 for (cnt
= len
; cnt
> 0 && (c
= *ptr
++) && isspace(c
); cnt
--);
1028 static int get_int_arg(char *ptr
, int len
, u_long
*pv
)
1032 *pv
= simple_strtoul(ptr
, &end
, 10);
1036 static int is_keyword(char *ptr
, int len
, char *verb
)
1038 int verb_len
= strlen(verb
);
1040 if (len
>= verb_len
&& !memcmp(verb
, ptr
, verb_len
))
1046 #define SKIP_SPACES(ptr, len) \
1047 if ((arg_len = skip_spaces(ptr, len)) < 1) \
1049 ptr += arg_len; len -= arg_len;
1051 #define GET_INT_ARG(ptr, len, v) \
1052 if (!(arg_len = get_int_arg(ptr, len, &(v)))) \
1054 ptr += arg_len; len -= arg_len;
1058 * Parse a control command
1061 static int sym_user_command(struct sym_hcb
*np
, char *buffer
, int length
)
1065 struct sym_usrcmd cmd
, *uc
= &cmd
;
1069 memset(uc
, 0, sizeof(*uc
));
1071 if (len
> 0 && ptr
[len
-1] == '\n')
1074 if ((arg_len
= is_keyword(ptr
, len
, "setsync")) != 0)
1075 uc
->cmd
= UC_SETSYNC
;
1076 else if ((arg_len
= is_keyword(ptr
, len
, "settags")) != 0)
1077 uc
->cmd
= UC_SETTAGS
;
1078 else if ((arg_len
= is_keyword(ptr
, len
, "setverbose")) != 0)
1079 uc
->cmd
= UC_SETVERBOSE
;
1080 else if ((arg_len
= is_keyword(ptr
, len
, "setwide")) != 0)
1081 uc
->cmd
= UC_SETWIDE
;
1082 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT
1083 else if ((arg_len
= is_keyword(ptr
, len
, "setdebug")) != 0)
1084 uc
->cmd
= UC_SETDEBUG
;
1086 else if ((arg_len
= is_keyword(ptr
, len
, "setflag")) != 0)
1087 uc
->cmd
= UC_SETFLAG
;
1088 else if ((arg_len
= is_keyword(ptr
, len
, "resetdev")) != 0)
1089 uc
->cmd
= UC_RESETDEV
;
1090 else if ((arg_len
= is_keyword(ptr
, len
, "cleardev")) != 0)
1091 uc
->cmd
= UC_CLEARDEV
;
1095 #ifdef DEBUG_PROC_INFO
1096 printk("sym_user_command: arg_len=%d, cmd=%ld\n", arg_len
, uc
->cmd
);
1101 ptr
+= arg_len
; len
-= arg_len
;
1110 SKIP_SPACES(ptr
, len
);
1111 if ((arg_len
= is_keyword(ptr
, len
, "all")) != 0) {
1112 ptr
+= arg_len
; len
-= arg_len
;
1115 GET_INT_ARG(ptr
, len
, target
);
1116 uc
->target
= (1<<target
);
1117 #ifdef DEBUG_PROC_INFO
1118 printk("sym_user_command: target=%ld\n", target
);
1129 SKIP_SPACES(ptr
, len
);
1130 GET_INT_ARG(ptr
, len
, uc
->data
);
1131 #ifdef DEBUG_PROC_INFO
1132 printk("sym_user_command: data=%ld\n", uc
->data
);
1135 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT
1138 SKIP_SPACES(ptr
, len
);
1139 if ((arg_len
= is_keyword(ptr
, len
, "alloc")))
1140 uc
->data
|= DEBUG_ALLOC
;
1141 else if ((arg_len
= is_keyword(ptr
, len
, "phase")))
1142 uc
->data
|= DEBUG_PHASE
;
1143 else if ((arg_len
= is_keyword(ptr
, len
, "queue")))
1144 uc
->data
|= DEBUG_QUEUE
;
1145 else if ((arg_len
= is_keyword(ptr
, len
, "result")))
1146 uc
->data
|= DEBUG_RESULT
;
1147 else if ((arg_len
= is_keyword(ptr
, len
, "scatter")))
1148 uc
->data
|= DEBUG_SCATTER
;
1149 else if ((arg_len
= is_keyword(ptr
, len
, "script")))
1150 uc
->data
|= DEBUG_SCRIPT
;
1151 else if ((arg_len
= is_keyword(ptr
, len
, "tiny")))
1152 uc
->data
|= DEBUG_TINY
;
1153 else if ((arg_len
= is_keyword(ptr
, len
, "timing")))
1154 uc
->data
|= DEBUG_TIMING
;
1155 else if ((arg_len
= is_keyword(ptr
, len
, "nego")))
1156 uc
->data
|= DEBUG_NEGO
;
1157 else if ((arg_len
= is_keyword(ptr
, len
, "tags")))
1158 uc
->data
|= DEBUG_TAGS
;
1159 else if ((arg_len
= is_keyword(ptr
, len
, "pointer")))
1160 uc
->data
|= DEBUG_POINTER
;
1163 ptr
+= arg_len
; len
-= arg_len
;
1165 #ifdef DEBUG_PROC_INFO
1166 printk("sym_user_command: data=%ld\n", uc
->data
);
1169 #endif /* SYM_LINUX_DEBUG_CONTROL_SUPPORT */
1172 SKIP_SPACES(ptr
, len
);
1173 if ((arg_len
= is_keyword(ptr
, len
, "no_disc")))
1174 uc
->data
&= ~SYM_DISC_ENABLED
;
1177 ptr
+= arg_len
; len
-= arg_len
;
1187 unsigned long flags
;
1189 spin_lock_irqsave(np
->s
.host
->host_lock
, flags
);
1190 sym_exec_user_command (np
, uc
);
1191 spin_unlock_irqrestore(np
->s
.host
->host_lock
, flags
);
1196 #endif /* SYM_LINUX_USER_COMMAND_SUPPORT */
1199 #ifdef SYM_LINUX_USER_INFO_SUPPORT
1201 * Informations through the proc file system.
1210 static void copy_mem_info(struct info_str
*info
, char *data
, int len
)
1212 if (info
->pos
+ len
> info
->length
)
1213 len
= info
->length
- info
->pos
;
1215 if (info
->pos
+ len
< info
->offset
) {
1219 if (info
->pos
< info
->offset
) {
1220 data
+= (info
->offset
- info
->pos
);
1221 len
-= (info
->offset
- info
->pos
);
1225 memcpy(info
->buffer
+ info
->pos
, data
, len
);
1230 static int copy_info(struct info_str
*info
, char *fmt
, ...)
1236 va_start(args
, fmt
);
1237 len
= vsprintf(buf
, fmt
, args
);
1240 copy_mem_info(info
, buf
, len
);
1245 * Copy formatted information into the input buffer.
1247 static int sym_host_info(struct sym_hcb
*np
, char *ptr
, off_t offset
, int len
)
1249 struct info_str info
;
1253 info
.offset
= offset
;
1256 copy_info(&info
, "Chip " NAME53C
"%s, device id 0x%x, "
1257 "revision id 0x%x\n", np
->s
.chip_name
,
1258 np
->s
.device
->device
, np
->s
.device
->revision
);
1259 copy_info(&info
, "At PCI address %s, IRQ " IRQ_FMT
"\n",
1260 pci_name(np
->s
.device
), IRQ_PRM(np
->s
.device
->irq
));
1261 copy_info(&info
, "Min. period factor %d, %s SCSI BUS%s\n",
1262 (int) (np
->minsync_dt
? np
->minsync_dt
: np
->minsync
),
1263 np
->maxwide
? "Wide" : "Narrow",
1264 np
->minsync_dt
? ", DT capable" : "");
1266 copy_info(&info
, "Max. started commands %d, "
1267 "max. commands per LUN %d\n",
1268 SYM_CONF_MAX_START
, SYM_CONF_MAX_TAG
);
1270 return info
.pos
> info
.offset
? info
.pos
- info
.offset
: 0;
1272 #endif /* SYM_LINUX_USER_INFO_SUPPORT */
1275 * Entry point of the scsi proc fs of the driver.
1276 * - func = 0 means read (returns adapter infos)
1277 * - func = 1 means write (not yet merget from sym53c8xx)
1279 static int sym53c8xx_proc_info(struct Scsi_Host
*host
, char *buffer
,
1280 char **start
, off_t offset
, int length
, int func
)
1282 struct sym_hcb
*np
= sym_get_hcb(host
);
1286 #ifdef SYM_LINUX_USER_COMMAND_SUPPORT
1287 retv
= sym_user_command(np
, buffer
, length
);
1294 #ifdef SYM_LINUX_USER_INFO_SUPPORT
1295 retv
= sym_host_info(np
, buffer
, offset
, length
);
1303 #endif /* SYM_LINUX_PROC_INFO_SUPPORT */
1306 * Free controller resources.
1308 static void sym_free_resources(struct sym_hcb
*np
, struct pci_dev
*pdev
)
1311 * Free O/S specific resources.
1314 free_irq(pdev
->irq
, np
);
1316 pci_iounmap(pdev
, np
->s
.ioaddr
);
1318 pci_iounmap(pdev
, np
->s
.ramaddr
);
1320 * Free O/S independent resources.
1324 sym_mfree_dma(np
, sizeof(*np
), "HCB");
1328 * Ask/tell the system about DMA addressing.
1330 static int sym_setup_bus_dma_mask(struct sym_hcb
*np
)
1332 #if SYM_CONF_DMA_ADDRESSING_MODE > 0
1333 #if SYM_CONF_DMA_ADDRESSING_MODE == 1
1334 #define DMA_DAC_MASK DMA_40BIT_MASK
1335 #elif SYM_CONF_DMA_ADDRESSING_MODE == 2
1336 #define DMA_DAC_MASK DMA_64BIT_MASK
1338 if ((np
->features
& FE_DAC
) &&
1339 !pci_set_dma_mask(np
->s
.device
, DMA_DAC_MASK
)) {
1345 if (!pci_set_dma_mask(np
->s
.device
, DMA_32BIT_MASK
))
1348 printf_warning("%s: No suitable DMA available\n", sym_name(np
));
1353 * Host attach and initialisations.
1355 * Allocate host data and ncb structure.
1356 * Remap MMIO region.
1357 * Do chip initialization.
1358 * If all is OK, install interrupt handling and
1359 * start the timer daemon.
1361 static struct Scsi_Host
* __devinit
sym_attach(struct scsi_host_template
*tpnt
,
1362 int unit
, struct sym_device
*dev
)
1364 struct host_data
*host_data
;
1365 struct sym_hcb
*np
= NULL
;
1366 struct Scsi_Host
*instance
= NULL
;
1367 struct pci_dev
*pdev
= dev
->pdev
;
1368 unsigned long flags
;
1371 printk(KERN_INFO
"sym%d: <%s> rev 0x%x at pci %s irq " IRQ_FMT
"\n",
1372 unit
, dev
->chip
.name
, pdev
->revision
, pci_name(pdev
),
1373 IRQ_PRM(pdev
->irq
));
1376 * Get the firmware for this chip.
1378 fw
= sym_find_firmware(&dev
->chip
);
1383 * Allocate host_data structure
1385 instance
= scsi_host_alloc(tpnt
, sizeof(*host_data
));
1388 host_data
= (struct host_data
*) instance
->hostdata
;
1391 * Allocate immediately the host control block,
1392 * since we are only expecting to succeed. :)
1393 * We keep track in the HCB of all the resources that
1394 * are to be released on error.
1396 np
= __sym_calloc_dma(&pdev
->dev
, sizeof(*np
), "HCB");
1399 np
->s
.device
= pdev
;
1400 np
->bus_dmat
= &pdev
->dev
; /* Result in 1 DMA pool per HBA */
1401 host_data
->ncb
= np
;
1402 np
->s
.host
= instance
;
1404 pci_set_drvdata(pdev
, np
);
1407 * Copy some useful infos to the HCB.
1409 np
->hcb_ba
= vtobus(np
);
1410 np
->verbose
= sym_driver_setup
.verbose
;
1411 np
->s
.device
= pdev
;
1413 np
->features
= dev
->chip
.features
;
1414 np
->clock_divn
= dev
->chip
.nr_divisor
;
1415 np
->maxoffs
= dev
->chip
.offset_max
;
1416 np
->maxburst
= dev
->chip
.burst_max
;
1417 np
->myaddr
= dev
->host_id
;
1422 strlcpy(np
->s
.chip_name
, dev
->chip
.name
, sizeof(np
->s
.chip_name
));
1423 sprintf(np
->s
.inst_name
, "sym%d", np
->s
.unit
);
1425 if (sym_setup_bus_dma_mask(np
))
1429 * Try to map the controller chip to
1430 * virtual and physical memory.
1432 np
->mmio_ba
= (u32
)dev
->mmio_base
;
1433 np
->s
.ioaddr
= dev
->s
.ioaddr
;
1434 np
->s
.ramaddr
= dev
->s
.ramaddr
;
1435 np
->s
.io_ws
= (np
->features
& FE_IO256
) ? 256 : 128;
1438 * Map on-chip RAM if present and supported.
1440 if (!(np
->features
& FE_RAM
))
1442 if (dev
->ram_base
) {
1443 np
->ram_ba
= (u32
)dev
->ram_base
;
1444 np
->ram_ws
= (np
->features
& FE_RAM8K
) ? 8192 : 4096;
1447 if (sym_hcb_attach(instance
, fw
, dev
->nvram
))
1451 * Install the interrupt handler.
1452 * If we synchonize the C code with SCRIPTS on interrupt,
1453 * we do not want to share the INTR line at all.
1455 if (request_irq(pdev
->irq
, sym53c8xx_intr
, IRQF_SHARED
, NAME53C8XX
, np
)) {
1456 printf_err("%s: request irq %d failure\n",
1457 sym_name(np
), pdev
->irq
);
1462 * After SCSI devices have been opened, we cannot
1463 * reset the bus safely, so we do it here.
1465 spin_lock_irqsave(instance
->host_lock
, flags
);
1466 if (sym_reset_scsi_bus(np
, 0))
1470 * Start the SCRIPTS.
1472 sym_start_up(np
, 1);
1475 * Start the timer daemon
1477 init_timer(&np
->s
.timer
);
1478 np
->s
.timer
.data
= (unsigned long) np
;
1479 np
->s
.timer
.function
= sym53c8xx_timer
;
1484 * Fill Linux host instance structure
1485 * and return success.
1487 instance
->max_channel
= 0;
1488 instance
->this_id
= np
->myaddr
;
1489 instance
->max_id
= np
->maxwide
? 16 : 8;
1490 instance
->max_lun
= SYM_CONF_MAX_LUN
;
1491 instance
->unique_id
= pci_resource_start(pdev
, 0);
1492 instance
->cmd_per_lun
= SYM_CONF_MAX_TAG
;
1493 instance
->can_queue
= (SYM_CONF_MAX_START
-2);
1494 instance
->sg_tablesize
= SYM_CONF_MAX_SG
;
1495 instance
->max_cmd_len
= 16;
1496 BUG_ON(sym2_transport_template
== NULL
);
1497 instance
->transportt
= sym2_transport_template
;
1499 /* 53c896 rev 1 errata: DMA may not cross 16MB boundary */
1500 if (pdev
->device
== PCI_DEVICE_ID_NCR_53C896
&& pdev
->revision
< 2)
1501 instance
->dma_boundary
= 0xFFFFFF;
1503 spin_unlock_irqrestore(instance
->host_lock
, flags
);
1508 printf_err("%s: FATAL ERROR: CHECK SCSI BUS - CABLES, "
1509 "TERMINATION, DEVICE POWER etc.!\n", sym_name(np
));
1510 spin_unlock_irqrestore(instance
->host_lock
, flags
);
1514 printf_info("%s: giving up ...\n", sym_name(np
));
1516 sym_free_resources(np
, pdev
);
1517 scsi_host_put(instance
);
1524 * Detect and try to read SYMBIOS and TEKRAM NVRAM.
1526 #if SYM_CONF_NVRAM_SUPPORT
1527 static void __devinit
sym_get_nvram(struct sym_device
*devp
, struct sym_nvram
*nvp
)
1532 sym_read_nvram(devp
, nvp
);
1535 static inline void sym_get_nvram(struct sym_device
*devp
, struct sym_nvram
*nvp
)
1538 #endif /* SYM_CONF_NVRAM_SUPPORT */
1540 static int __devinit
sym_check_supported(struct sym_device
*device
)
1542 struct sym_chip
*chip
;
1543 struct pci_dev
*pdev
= device
->pdev
;
1544 unsigned long io_port
= pci_resource_start(pdev
, 0);
1548 * If user excluded this chip, do not initialize it.
1549 * I hate this code so much. Must kill it.
1552 for (i
= 0 ; i
< 8 ; i
++) {
1553 if (sym_driver_setup
.excludes
[i
] == io_port
)
1559 * Check if the chip is supported. Then copy the chip description
1560 * to our device structure so we can make it match the actual device
1563 chip
= sym_lookup_chip_table(pdev
->device
, pdev
->revision
);
1565 dev_info(&pdev
->dev
, "device not supported\n");
1568 memcpy(&device
->chip
, chip
, sizeof(device
->chip
));
1574 * Ignore Symbios chips controlled by various RAID controllers.
1575 * These controllers set value 0x52414944 at RAM end - 16.
1577 static int __devinit
sym_check_raid(struct sym_device
*device
)
1579 unsigned int ram_size
, ram_val
;
1581 if (!device
->s
.ramaddr
)
1584 if (device
->chip
.features
& FE_RAM8K
)
1589 ram_val
= readl(device
->s
.ramaddr
+ ram_size
- 16);
1590 if (ram_val
!= 0x52414944)
1593 dev_info(&device
->pdev
->dev
,
1594 "not initializing, driven by RAID controller.\n");
1598 static int __devinit
sym_set_workarounds(struct sym_device
*device
)
1600 struct sym_chip
*chip
= &device
->chip
;
1601 struct pci_dev
*pdev
= device
->pdev
;
1605 * (ITEM 12 of a DEL about the 896 I haven't yet).
1606 * We must ensure the chip will use WRITE AND INVALIDATE.
1607 * The revision number limit is for now arbitrary.
1609 if (pdev
->device
== PCI_DEVICE_ID_NCR_53C896
&& pdev
->revision
< 0x4) {
1610 chip
->features
|= (FE_WRIE
| FE_CLSE
);
1613 /* If the chip can do Memory Write Invalidate, enable it */
1614 if (chip
->features
& FE_WRIE
) {
1615 if (pci_set_mwi(pdev
))
1620 * Work around for errant bit in 895A. The 66Mhz
1621 * capable bit is set erroneously. Clear this bit.
1624 * Make sure Config space and Features agree.
1626 * Recall: writes are not normal to status register -
1627 * write a 1 to clear and a 0 to leave unchanged.
1628 * Can only reset bits.
1630 pci_read_config_word(pdev
, PCI_STATUS
, &status_reg
);
1631 if (chip
->features
& FE_66MHZ
) {
1632 if (!(status_reg
& PCI_STATUS_66MHZ
))
1633 chip
->features
&= ~FE_66MHZ
;
1635 if (status_reg
& PCI_STATUS_66MHZ
) {
1636 status_reg
= PCI_STATUS_66MHZ
;
1637 pci_write_config_word(pdev
, PCI_STATUS
, status_reg
);
1638 pci_read_config_word(pdev
, PCI_STATUS
, &status_reg
);
1646 * Read and check the PCI configuration for any detected NCR
1647 * boards and save data for attaching after all boards have
1650 static void __devinit
1651 sym_init_device(struct pci_dev
*pdev
, struct sym_device
*device
)
1654 struct pci_bus_region bus_addr
;
1656 device
->host_id
= SYM_SETUP_HOST_ID
;
1657 device
->pdev
= pdev
;
1659 pcibios_resource_to_bus(pdev
, &bus_addr
, &pdev
->resource
[1]);
1660 device
->mmio_base
= bus_addr
.start
;
1663 * If the BAR is 64-bit, resource 2 will be occupied by the
1666 if (!pdev
->resource
[i
].flags
)
1668 pcibios_resource_to_bus(pdev
, &bus_addr
, &pdev
->resource
[i
]);
1669 device
->ram_base
= bus_addr
.start
;
1671 #ifdef CONFIG_SCSI_SYM53C8XX_MMIO
1672 if (device
->mmio_base
)
1673 device
->s
.ioaddr
= pci_iomap(pdev
, 1,
1674 pci_resource_len(pdev
, 1));
1676 if (!device
->s
.ioaddr
)
1677 device
->s
.ioaddr
= pci_iomap(pdev
, 0,
1678 pci_resource_len(pdev
, 0));
1679 if (device
->ram_base
)
1680 device
->s
.ramaddr
= pci_iomap(pdev
, i
,
1681 pci_resource_len(pdev
, i
));
1685 * The NCR PQS and PDS cards are constructed as a DEC bridge
1686 * behind which sits a proprietary NCR memory controller and
1687 * either four or two 53c875s as separate devices. We can tell
1688 * if an 875 is part of a PQS/PDS or not since if it is, it will
1689 * be on the same bus as the memory controller. In its usual
1690 * mode of operation, the 875s are slaved to the memory
1691 * controller for all transfers. To operate with the Linux
1692 * driver, the memory controller is disabled and the 875s
1693 * freed to function independently. The only wrinkle is that
1694 * the preset SCSI ID (which may be zero) must be read in from
1695 * a special configuration space register of the 875.
1697 static void sym_config_pqs(struct pci_dev
*pdev
, struct sym_device
*sym_dev
)
1702 for (slot
= 0; slot
< 256; slot
++) {
1703 struct pci_dev
*memc
= pci_get_slot(pdev
->bus
, slot
);
1705 if (!memc
|| memc
->vendor
!= 0x101a || memc
->device
== 0x0009) {
1710 /* bit 1: allow individual 875 configuration */
1711 pci_read_config_byte(memc
, 0x44, &tmp
);
1712 if ((tmp
& 0x2) == 0) {
1714 pci_write_config_byte(memc
, 0x44, tmp
);
1717 /* bit 2: drive individual 875 interrupts to the bus */
1718 pci_read_config_byte(memc
, 0x45, &tmp
);
1719 if ((tmp
& 0x4) == 0) {
1721 pci_write_config_byte(memc
, 0x45, tmp
);
1728 pci_read_config_byte(pdev
, 0x84, &tmp
);
1729 sym_dev
->host_id
= tmp
;
1733 * Called before unloading the module.
1735 * We have to free resources and halt the NCR chip.
1737 static int sym_detach(struct sym_hcb
*np
, struct pci_dev
*pdev
)
1739 printk("%s: detaching ...\n", sym_name(np
));
1741 del_timer_sync(&np
->s
.timer
);
1745 * We should use sym_soft_reset(), but we don't want to do
1746 * so, since we may not be safe if interrupts occur.
1748 printk("%s: resetting chip\n", sym_name(np
));
1749 OUTB(np
, nc_istat
, SRST
);
1752 OUTB(np
, nc_istat
, 0);
1754 sym_free_resources(np
, pdev
);
1760 * Driver host template.
1762 static struct scsi_host_template sym2_template
= {
1763 .module
= THIS_MODULE
,
1764 .name
= "sym53c8xx",
1765 .info
= sym53c8xx_info
,
1766 .queuecommand
= sym53c8xx_queue_command
,
1767 .slave_alloc
= sym53c8xx_slave_alloc
,
1768 .slave_configure
= sym53c8xx_slave_configure
,
1769 .slave_destroy
= sym53c8xx_slave_destroy
,
1770 .eh_abort_handler
= sym53c8xx_eh_abort_handler
,
1771 .eh_device_reset_handler
= sym53c8xx_eh_device_reset_handler
,
1772 .eh_bus_reset_handler
= sym53c8xx_eh_bus_reset_handler
,
1773 .eh_host_reset_handler
= sym53c8xx_eh_host_reset_handler
,
1775 .use_clustering
= ENABLE_CLUSTERING
,
1776 .use_sg_chaining
= ENABLE_SG_CHAINING
,
1777 .max_sectors
= 0xFFFF,
1778 #ifdef SYM_LINUX_PROC_INFO_SUPPORT
1779 .proc_info
= sym53c8xx_proc_info
,
1780 .proc_name
= NAME53C8XX
,
1784 static int attach_count
;
1786 static int __devinit
sym2_probe(struct pci_dev
*pdev
,
1787 const struct pci_device_id
*ent
)
1789 struct sym_device sym_dev
;
1790 struct sym_nvram nvram
;
1791 struct Scsi_Host
*instance
;
1793 memset(&sym_dev
, 0, sizeof(sym_dev
));
1794 memset(&nvram
, 0, sizeof(nvram
));
1796 if (pci_enable_device(pdev
))
1799 pci_set_master(pdev
);
1801 if (pci_request_regions(pdev
, NAME53C8XX
))
1804 sym_init_device(pdev
, &sym_dev
);
1805 if (sym_check_supported(&sym_dev
))
1808 if (sym_check_raid(&sym_dev
))
1809 goto leave
; /* Don't disable the device */
1811 if (sym_set_workarounds(&sym_dev
))
1814 sym_config_pqs(pdev
, &sym_dev
);
1816 sym_get_nvram(&sym_dev
, &nvram
);
1818 instance
= sym_attach(&sym2_template
, attach_count
, &sym_dev
);
1822 if (scsi_add_host(instance
, &pdev
->dev
))
1824 scsi_scan_host(instance
);
1831 sym_detach(pci_get_drvdata(pdev
), pdev
);
1833 pci_release_regions(pdev
);
1835 pci_disable_device(pdev
);
1840 static void __devexit
sym2_remove(struct pci_dev
*pdev
)
1842 struct sym_hcb
*np
= pci_get_drvdata(pdev
);
1843 struct Scsi_Host
*host
= np
->s
.host
;
1845 scsi_remove_host(host
);
1846 scsi_host_put(host
);
1848 sym_detach(np
, pdev
);
1850 pci_release_regions(pdev
);
1851 pci_disable_device(pdev
);
1857 * sym2_io_error_detected() - called when PCI error is detected
1858 * @pdev: pointer to PCI device
1859 * @state: current state of the PCI slot
1861 static pci_ers_result_t
sym2_io_error_detected(struct pci_dev
*pdev
,
1862 enum pci_channel_state state
)
1864 /* If slot is permanently frozen, turn everything off */
1865 if (state
== pci_channel_io_perm_failure
) {
1867 return PCI_ERS_RESULT_DISCONNECT
;
1870 disable_irq(pdev
->irq
);
1871 pci_disable_device(pdev
);
1873 /* Request that MMIO be enabled, so register dump can be taken. */
1874 return PCI_ERS_RESULT_CAN_RECOVER
;
1878 * sym2_io_slot_dump - Enable MMIO and dump debug registers
1879 * @pdev: pointer to PCI device
1881 static pci_ers_result_t
sym2_io_slot_dump(struct pci_dev
*pdev
)
1883 struct sym_hcb
*np
= pci_get_drvdata(pdev
);
1885 sym_dump_registers(np
);
1887 /* Request a slot reset. */
1888 return PCI_ERS_RESULT_NEED_RESET
;
1892 * sym2_reset_workarounds - hardware-specific work-arounds
1894 * This routine is similar to sym_set_workarounds(), except
1895 * that, at this point, we already know that the device was
1896 * succesfully intialized at least once before, and so most
1897 * of the steps taken there are un-needed here.
1899 static void sym2_reset_workarounds(struct pci_dev
*pdev
)
1902 struct sym_chip
*chip
;
1904 chip
= sym_lookup_chip_table(pdev
->device
, pdev
->revision
);
1906 /* Work around for errant bit in 895A, in a fashion
1907 * similar to what is done in sym_set_workarounds().
1909 pci_read_config_word(pdev
, PCI_STATUS
, &status_reg
);
1910 if (!(chip
->features
& FE_66MHZ
) && (status_reg
& PCI_STATUS_66MHZ
)) {
1911 status_reg
= PCI_STATUS_66MHZ
;
1912 pci_write_config_word(pdev
, PCI_STATUS
, status_reg
);
1913 pci_read_config_word(pdev
, PCI_STATUS
, &status_reg
);
1918 * sym2_io_slot_reset() - called when the pci bus has been reset.
1919 * @pdev: pointer to PCI device
1921 * Restart the card from scratch.
1923 static pci_ers_result_t
sym2_io_slot_reset(struct pci_dev
*pdev
)
1925 struct sym_hcb
*np
= pci_get_drvdata(pdev
);
1927 printk(KERN_INFO
"%s: recovering from a PCI slot reset\n",
1930 if (pci_enable_device(pdev
)) {
1931 printk(KERN_ERR
"%s: Unable to enable after PCI reset\n",
1933 return PCI_ERS_RESULT_DISCONNECT
;
1936 pci_set_master(pdev
);
1937 enable_irq(pdev
->irq
);
1939 /* If the chip can do Memory Write Invalidate, enable it */
1940 if (np
->features
& FE_WRIE
) {
1941 if (pci_set_mwi(pdev
))
1942 return PCI_ERS_RESULT_DISCONNECT
;
1945 /* Perform work-arounds, analogous to sym_set_workarounds() */
1946 sym2_reset_workarounds(pdev
);
1948 /* Perform host reset only on one instance of the card */
1949 if (PCI_FUNC(pdev
->devfn
) == 0) {
1950 if (sym_reset_scsi_bus(np
, 0)) {
1951 printk(KERN_ERR
"%s: Unable to reset scsi host\n",
1953 return PCI_ERS_RESULT_DISCONNECT
;
1955 sym_start_up(np
, 1);
1958 return PCI_ERS_RESULT_RECOVERED
;
1962 * sym2_io_resume() - resume normal ops after PCI reset
1963 * @pdev: pointer to PCI device
1965 * Called when the error recovery driver tells us that its
1966 * OK to resume normal operation. Use completion to allow
1967 * halted scsi ops to resume.
1969 static void sym2_io_resume(struct pci_dev
*pdev
)
1971 struct sym_hcb
*np
= pci_get_drvdata(pdev
);
1972 struct Scsi_Host
*shost
= np
->s
.host
;
1973 struct host_data
*hostdata
= shost_priv(shost
);
1975 spin_lock_irq(shost
->host_lock
);
1976 if (hostdata
->io_reset
)
1977 complete_all(hostdata
->io_reset
);
1978 hostdata
->io_reset
= NULL
;
1979 spin_unlock_irq(shost
->host_lock
);
1982 static void sym2_get_signalling(struct Scsi_Host
*shost
)
1984 struct sym_hcb
*np
= sym_get_hcb(shost
);
1985 enum spi_signal_type type
;
1987 switch (np
->scsi_mode
) {
1989 type
= SPI_SIGNAL_SE
;
1992 type
= SPI_SIGNAL_LVD
;
1995 type
= SPI_SIGNAL_HVD
;
1998 type
= SPI_SIGNAL_UNKNOWN
;
2001 spi_signalling(shost
) = type
;
2004 static void sym2_set_offset(struct scsi_target
*starget
, int offset
)
2006 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2007 struct sym_hcb
*np
= sym_get_hcb(shost
);
2008 struct sym_tcb
*tp
= &np
->target
[starget
->id
];
2010 tp
->tgoal
.offset
= offset
;
2011 tp
->tgoal
.check_nego
= 1;
2014 static void sym2_set_period(struct scsi_target
*starget
, int period
)
2016 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2017 struct sym_hcb
*np
= sym_get_hcb(shost
);
2018 struct sym_tcb
*tp
= &np
->target
[starget
->id
];
2020 /* have to have DT for these transfers, but DT will also
2021 * set width, so check that this is allowed */
2022 if (period
<= np
->minsync
&& spi_width(starget
))
2025 tp
->tgoal
.period
= period
;
2026 tp
->tgoal
.check_nego
= 1;
2029 static void sym2_set_width(struct scsi_target
*starget
, int width
)
2031 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2032 struct sym_hcb
*np
= sym_get_hcb(shost
);
2033 struct sym_tcb
*tp
= &np
->target
[starget
->id
];
2035 /* It is illegal to have DT set on narrow transfers. If DT is
2036 * clear, we must also clear IU and QAS. */
2038 tp
->tgoal
.iu
= tp
->tgoal
.dt
= tp
->tgoal
.qas
= 0;
2040 tp
->tgoal
.width
= width
;
2041 tp
->tgoal
.check_nego
= 1;
2044 static void sym2_set_dt(struct scsi_target
*starget
, int dt
)
2046 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2047 struct sym_hcb
*np
= sym_get_hcb(shost
);
2048 struct sym_tcb
*tp
= &np
->target
[starget
->id
];
2050 /* We must clear QAS and IU if DT is clear */
2054 tp
->tgoal
.iu
= tp
->tgoal
.dt
= tp
->tgoal
.qas
= 0;
2055 tp
->tgoal
.check_nego
= 1;
2059 static void sym2_set_iu(struct scsi_target
*starget
, int iu
)
2061 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2062 struct sym_hcb
*np
= sym_get_hcb(shost
);
2063 struct sym_tcb
*tp
= &np
->target
[starget
->id
];
2066 tp
->tgoal
.iu
= tp
->tgoal
.dt
= 1;
2069 tp
->tgoal
.check_nego
= 1;
2072 static void sym2_set_qas(struct scsi_target
*starget
, int qas
)
2074 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
2075 struct sym_hcb
*np
= sym_get_hcb(shost
);
2076 struct sym_tcb
*tp
= &np
->target
[starget
->id
];
2079 tp
->tgoal
.dt
= tp
->tgoal
.qas
= 1;
2082 tp
->tgoal
.check_nego
= 1;
2086 static struct spi_function_template sym2_transport_functions
= {
2087 .set_offset
= sym2_set_offset
,
2089 .set_period
= sym2_set_period
,
2091 .set_width
= sym2_set_width
,
2093 .set_dt
= sym2_set_dt
,
2096 .set_iu
= sym2_set_iu
,
2098 .set_qas
= sym2_set_qas
,
2101 .get_signalling
= sym2_get_signalling
,
2104 static struct pci_device_id sym2_id_table
[] __devinitdata
= {
2105 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C810
,
2106 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2107 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C820
,
2108 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL }, /* new */
2109 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C825
,
2110 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2111 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C815
,
2112 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2113 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_LSI_53C810AP
,
2114 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL }, /* new */
2115 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C860
,
2116 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2117 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_LSI_53C1510
,
2118 PCI_ANY_ID
, PCI_ANY_ID
, PCI_CLASS_STORAGE_SCSI
<<8, 0xffff00, 0UL },
2119 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C896
,
2120 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2121 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C895
,
2122 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2123 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C885
,
2124 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2125 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C875
,
2126 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2127 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C1510
,
2128 PCI_ANY_ID
, PCI_ANY_ID
, PCI_CLASS_STORAGE_SCSI
<<8, 0xffff00, 0UL }, /* new */
2129 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_LSI_53C895A
,
2130 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2131 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_LSI_53C875A
,
2132 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2133 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_LSI_53C1010_33
,
2134 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2135 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_LSI_53C1010_66
,
2136 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2137 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C875J
,
2138 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2142 MODULE_DEVICE_TABLE(pci
, sym2_id_table
);
2144 static struct pci_error_handlers sym2_err_handler
= {
2145 .error_detected
= sym2_io_error_detected
,
2146 .mmio_enabled
= sym2_io_slot_dump
,
2147 .slot_reset
= sym2_io_slot_reset
,
2148 .resume
= sym2_io_resume
,
2151 static struct pci_driver sym2_driver
= {
2153 .id_table
= sym2_id_table
,
2154 .probe
= sym2_probe
,
2155 .remove
= __devexit_p(sym2_remove
),
2156 .err_handler
= &sym2_err_handler
,
2159 static int __init
sym2_init(void)
2163 sym2_setup_params();
2164 sym2_transport_template
= spi_attach_transport(&sym2_transport_functions
);
2165 if (!sym2_transport_template
)
2168 error
= pci_register_driver(&sym2_driver
);
2170 spi_release_transport(sym2_transport_template
);
2174 static void __exit
sym2_exit(void)
2176 pci_unregister_driver(&sym2_driver
);
2177 spi_release_transport(sym2_transport_template
);
2180 module_init(sym2_init
);
2181 module_exit(sym2_exit
);