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 unsigned char to_do
; /* For error handling */
138 void (*old_done
)(struct scsi_cmnd
*); /* For error handling */
139 struct completion
*eh_done
; /* For error handling */
142 #define SYM_UCMD_PTR(cmd) ((struct sym_ucmd *)(&(cmd)->SCp))
143 #define SYM_SOFTC_PTR(cmd) sym_get_hcb(cmd->device->host)
146 * Complete a pending CAM CCB.
148 void sym_xpt_done(struct sym_hcb
*np
, struct scsi_cmnd
*cmd
)
155 * Tell the SCSI layer about a BUS RESET.
157 void sym_xpt_async_bus_reset(struct sym_hcb
*np
)
159 printf_notice("%s: SCSI BUS has been reset.\n", sym_name(np
));
160 np
->s
.settle_time
= jiffies
+ sym_driver_setup
.settle_delay
* HZ
;
161 np
->s
.settle_time_valid
= 1;
162 if (sym_verbose
>= 2)
163 printf_info("%s: command processing suspended for %d seconds\n",
164 sym_name(np
), sym_driver_setup
.settle_delay
);
168 * Tell the SCSI layer about a BUS DEVICE RESET message sent.
170 void sym_xpt_async_sent_bdr(struct sym_hcb
*np
, int target
)
172 printf_notice("%s: TARGET %d has been reset.\n", sym_name(np
), target
);
176 * Choose the more appropriate CAM status if
177 * the IO encountered an extended error.
179 static int sym_xerr_cam_status(int cam_status
, int x_status
)
182 if (x_status
& XE_PARITY_ERR
)
183 cam_status
= DID_PARITY
;
184 else if (x_status
&(XE_EXTRA_DATA
|XE_SODL_UNRUN
|XE_SWIDE_OVRUN
))
185 cam_status
= DID_ERROR
;
186 else if (x_status
& XE_BAD_PHASE
)
187 cam_status
= DID_ERROR
;
189 cam_status
= DID_ERROR
;
195 * Build CAM result for a failed or auto-sensed IO.
197 void sym_set_cam_result_error(struct sym_hcb
*np
, struct sym_ccb
*cp
, int resid
)
199 struct scsi_cmnd
*cmd
= cp
->cmd
;
200 u_int cam_status
, scsi_status
, drv_status
;
204 scsi_status
= cp
->ssss_status
;
206 if (cp
->host_flags
& HF_SENSE
) {
207 scsi_status
= cp
->sv_scsi_status
;
208 resid
= cp
->sv_resid
;
209 if (sym_verbose
&& cp
->sv_xerr_status
)
210 sym_print_xerr(cmd
, cp
->sv_xerr_status
);
211 if (cp
->host_status
== HS_COMPLETE
&&
212 cp
->ssss_status
== S_GOOD
&&
213 cp
->xerr_status
== 0) {
214 cam_status
= sym_xerr_cam_status(DID_OK
,
216 drv_status
= DRIVER_SENSE
;
218 * Bounce back the sense data to user.
220 memset(&cmd
->sense_buffer
, 0, sizeof(cmd
->sense_buffer
));
221 memcpy(cmd
->sense_buffer
, cp
->sns_bbuf
,
222 min(sizeof(cmd
->sense_buffer
),
223 (size_t)SYM_SNS_BBUF_LEN
));
226 * If the device reports a UNIT ATTENTION condition
227 * due to a RESET condition, we should consider all
228 * disconnect CCBs for this unit as aborted.
232 p
= (u_char
*) cmd
->sense_data
;
233 if (p
[0]==0x70 && p
[2]==0x6 && p
[12]==0x29)
234 sym_clear_tasks(np
, DID_ABORT
,
235 cp
->target
,cp
->lun
, -1);
240 * Error return from our internal request sense. This
241 * is bad: we must clear the contingent allegiance
242 * condition otherwise the device will always return
243 * BUSY. Use a big stick.
245 sym_reset_scsi_target(np
, cmd
->device
->id
);
246 cam_status
= DID_ERROR
;
248 } else if (cp
->host_status
== HS_COMPLETE
) /* Bad SCSI status */
250 else if (cp
->host_status
== HS_SEL_TIMEOUT
) /* Selection timeout */
251 cam_status
= DID_NO_CONNECT
;
252 else if (cp
->host_status
== HS_UNEXPECTED
) /* Unexpected BUS FREE*/
253 cam_status
= DID_ERROR
;
254 else { /* Extended error */
256 sym_print_addr(cmd
, "COMMAND FAILED (%x %x %x).\n",
257 cp
->host_status
, cp
->ssss_status
,
261 * Set the most appropriate value for CAM status.
263 cam_status
= sym_xerr_cam_status(DID_ERROR
, cp
->xerr_status
);
265 scsi_set_resid(cmd
, resid
);
266 cmd
->result
= (drv_status
<< 24) + (cam_status
<< 16) + scsi_status
;
269 static int sym_scatter(struct sym_hcb
*np
, struct sym_ccb
*cp
, struct scsi_cmnd
*cmd
)
276 use_sg
= scsi_dma_map(cmd
);
278 struct scatterlist
*sg
;
279 struct sym_tcb
*tp
= &np
->target
[cp
->target
];
280 struct sym_tblmove
*data
;
282 if (use_sg
> SYM_CONF_MAX_SG
) {
287 data
= &cp
->phys
.data
[SYM_CONF_MAX_SG
- use_sg
];
289 scsi_for_each_sg(cmd
, sg
, use_sg
, segment
) {
290 dma_addr_t baddr
= sg_dma_address(sg
);
291 unsigned int len
= sg_dma_len(sg
);
293 if ((len
& 1) && (tp
->head
.wval
& EWS
)) {
295 cp
->odd_byte_adjustment
++;
298 sym_build_sge(np
, &data
[segment
], baddr
, len
);
309 * Queue a SCSI command.
311 static int sym_queue_command(struct sym_hcb
*np
, struct scsi_cmnd
*cmd
)
313 struct scsi_device
*sdev
= cmd
->device
;
320 * Retrieve the target descriptor.
322 tp
= &np
->target
[sdev
->id
];
325 * Select tagged/untagged.
327 lp
= sym_lp(tp
, sdev
->lun
);
328 order
= (lp
&& lp
->s
.reqtags
) ? M_SIMPLE_TAG
: 0;
333 cp
= sym_get_ccb(np
, cmd
, order
);
335 return 1; /* Means resource shortage */
336 sym_queue_scsiio(np
, cmd
, cp
);
341 * Setup buffers and pointers that address the CDB.
343 static inline int sym_setup_cdb(struct sym_hcb
*np
, struct scsi_cmnd
*cmd
, struct sym_ccb
*cp
)
345 memcpy(cp
->cdb_buf
, cmd
->cmnd
, cmd
->cmd_len
);
347 cp
->phys
.cmd
.addr
= CCB_BA(cp
, cdb_buf
[0]);
348 cp
->phys
.cmd
.size
= cpu_to_scr(cmd
->cmd_len
);
354 * Setup pointers that address the data and start the I/O.
356 int sym_setup_data_and_start(struct sym_hcb
*np
, struct scsi_cmnd
*cmd
, struct sym_ccb
*cp
)
364 if (sym_setup_cdb(np
, cmd
, cp
))
368 * No direction means no data.
370 dir
= cmd
->sc_data_direction
;
371 if (dir
!= DMA_NONE
) {
372 cp
->segments
= sym_scatter(np
, cp
, cmd
);
373 if (cp
->segments
< 0) {
374 sym_set_cam_status(cmd
, DID_ERROR
);
379 * No segments means no data.
389 * Set the data pointer.
392 case DMA_BIDIRECTIONAL
:
393 printk("%s: got DMA_BIDIRECTIONAL command", sym_name(np
));
394 sym_set_cam_status(cmd
, DID_ERROR
);
397 goalp
= SCRIPTA_BA(np
, data_out2
) + 8;
398 lastp
= goalp
- 8 - (cp
->segments
* (2*4));
400 case DMA_FROM_DEVICE
:
401 cp
->host_flags
|= HF_DATA_IN
;
402 goalp
= SCRIPTA_BA(np
, data_in2
) + 8;
403 lastp
= goalp
- 8 - (cp
->segments
* (2*4));
407 lastp
= goalp
= SCRIPTB_BA(np
, no_data
);
412 * Set all pointers values needed by SCRIPTS.
414 cp
->phys
.head
.lastp
= cpu_to_scr(lastp
);
415 cp
->phys
.head
.savep
= cpu_to_scr(lastp
);
416 cp
->startp
= cp
->phys
.head
.savep
;
417 cp
->goalp
= cpu_to_scr(goalp
);
420 * When `#ifed 1', the code below makes the driver
421 * panic on the first attempt to write to a SCSI device.
422 * It is the first test we want to do after a driver
423 * change that does not seem obviously safe. :)
426 switch (cp
->cdb_buf
[0]) {
427 case 0x0A: case 0x2A: case 0xAA:
428 panic("XXXXXXXXXXXXX WRITE NOT YET ALLOWED XXXXXXXXXXXXXX\n");
438 sym_put_start_queue(np
, cp
);
442 sym_free_ccb(np
, cp
);
443 sym_xpt_done(np
, cmd
);
451 * Misused to keep the driver running when
452 * interrupts are not configured correctly.
454 static void sym_timer(struct sym_hcb
*np
)
456 unsigned long thistime
= jiffies
;
461 np
->s
.timer
.expires
= thistime
+ SYM_CONF_TIMER_INTERVAL
;
462 add_timer(&np
->s
.timer
);
465 * If we are resetting the ncr, wait for settle_time before
466 * clearing it. Then command processing will be resumed.
468 if (np
->s
.settle_time_valid
) {
469 if (time_before_eq(np
->s
.settle_time
, thistime
)) {
470 if (sym_verbose
>= 2 )
471 printk("%s: command processing resumed\n",
473 np
->s
.settle_time_valid
= 0;
479 * Nothing to do for now, but that may come.
481 if (np
->s
.lasttime
+ 4*HZ
< thistime
) {
482 np
->s
.lasttime
= thistime
;
485 #ifdef SYM_CONF_PCIQ_MAY_MISS_COMPLETIONS
487 * Some way-broken PCI bridges may lead to
488 * completions being lost when the clearing
489 * of the INTFLY flag by the CPU occurs
490 * concurrently with the chip raising this flag.
491 * If this ever happen, lost completions will
500 * PCI BUS error handler.
502 void sym_log_bus_error(struct sym_hcb
*np
)
505 pci_read_config_word(np
->s
.device
, PCI_STATUS
, &pci_sts
);
506 if (pci_sts
& 0xf900) {
507 pci_write_config_word(np
->s
.device
, PCI_STATUS
, pci_sts
);
508 printf("%s: PCI STATUS = 0x%04x\n",
509 sym_name(np
), pci_sts
& 0xf900);
514 * queuecommand method. Entered with the host adapter lock held and
515 * interrupts disabled.
517 static int sym53c8xx_queue_command(struct scsi_cmnd
*cmd
,
518 void (*done
)(struct scsi_cmnd
*))
520 struct sym_hcb
*np
= SYM_SOFTC_PTR(cmd
);
521 struct sym_ucmd
*ucp
= SYM_UCMD_PTR(cmd
);
524 cmd
->scsi_done
= done
;
525 memset(ucp
, 0, sizeof(*ucp
));
528 * Shorten our settle_time if needed for
529 * this command not to time out.
531 if (np
->s
.settle_time_valid
&& cmd
->timeout_per_command
) {
532 unsigned long tlimit
= jiffies
+ cmd
->timeout_per_command
;
533 tlimit
-= SYM_CONF_TIMER_INTERVAL
*2;
534 if (time_after(np
->s
.settle_time
, tlimit
)) {
535 np
->s
.settle_time
= tlimit
;
539 if (np
->s
.settle_time_valid
)
540 return SCSI_MLQUEUE_HOST_BUSY
;
542 sts
= sym_queue_command(np
, cmd
);
544 return SCSI_MLQUEUE_HOST_BUSY
;
549 * Linux entry point of the interrupt handler.
551 static irqreturn_t
sym53c8xx_intr(int irq
, void *dev_id
)
553 struct sym_hcb
*np
= dev_id
;
555 if (DEBUG_FLAGS
& DEBUG_TINY
) printf_debug ("[");
557 spin_lock(np
->s
.host
->host_lock
);
559 spin_unlock(np
->s
.host
->host_lock
);
561 if (DEBUG_FLAGS
& DEBUG_TINY
) printf_debug ("]\n");
567 * Linux entry point of the timer handler
569 static void sym53c8xx_timer(unsigned long npref
)
571 struct sym_hcb
*np
= (struct sym_hcb
*)npref
;
574 spin_lock_irqsave(np
->s
.host
->host_lock
, flags
);
576 spin_unlock_irqrestore(np
->s
.host
->host_lock
, flags
);
581 * What the eh thread wants us to perform.
583 #define SYM_EH_ABORT 0
584 #define SYM_EH_DEVICE_RESET 1
585 #define SYM_EH_BUS_RESET 2
586 #define SYM_EH_HOST_RESET 3
589 * What we will do regarding the involved SCSI command.
591 #define SYM_EH_DO_IGNORE 0
592 #define SYM_EH_DO_WAIT 2
595 * scsi_done() alias when error recovery is in progress.
597 static void sym_eh_done(struct scsi_cmnd
*cmd
)
599 struct sym_ucmd
*ucmd
= SYM_UCMD_PTR(cmd
);
600 BUILD_BUG_ON(sizeof(struct scsi_pointer
) < sizeof(struct sym_ucmd
));
602 cmd
->scsi_done
= ucmd
->old_done
;
604 if (ucmd
->to_do
== SYM_EH_DO_WAIT
)
605 complete(ucmd
->eh_done
);
609 * Generic method for our eh processing.
610 * The 'op' argument tells what we have to do.
612 static int sym_eh_handler(int op
, char *opname
, struct scsi_cmnd
*cmd
)
614 struct sym_hcb
*np
= SYM_SOFTC_PTR(cmd
);
615 struct sym_ucmd
*ucmd
= SYM_UCMD_PTR(cmd
);
616 struct Scsi_Host
*host
= cmd
->device
->host
;
618 int to_do
= SYM_EH_DO_IGNORE
;
620 struct completion eh_done
;
622 dev_warn(&cmd
->device
->sdev_gendev
, "%s operation started.\n", opname
);
624 spin_lock_irq(host
->host_lock
);
625 /* This one is queued in some place -> to wait for completion */
626 FOR_EACH_QUEUED_ELEMENT(&np
->busy_ccbq
, qp
) {
627 struct sym_ccb
*cp
= sym_que_entry(qp
, struct sym_ccb
, link_ccbq
);
628 if (cp
->cmd
== cmd
) {
629 to_do
= SYM_EH_DO_WAIT
;
634 if (to_do
== SYM_EH_DO_WAIT
) {
635 init_completion(&eh_done
);
636 ucmd
->old_done
= cmd
->scsi_done
;
637 ucmd
->eh_done
= &eh_done
;
639 cmd
->scsi_done
= sym_eh_done
;
642 /* Try to proceed the operation we have been asked for */
646 sts
= sym_abort_scsiio(np
, cmd
, 1);
648 case SYM_EH_DEVICE_RESET
:
649 sts
= sym_reset_scsi_target(np
, cmd
->device
->id
);
651 case SYM_EH_BUS_RESET
:
652 sym_reset_scsi_bus(np
, 1);
655 case SYM_EH_HOST_RESET
:
656 sym_reset_scsi_bus(np
, 0);
657 sym_start_up (np
, 1);
664 /* On error, restore everything and cross fingers :) */
666 cmd
->scsi_done
= ucmd
->old_done
;
667 to_do
= SYM_EH_DO_IGNORE
;
671 spin_unlock_irq(host
->host_lock
);
673 if (to_do
== SYM_EH_DO_WAIT
) {
674 if (!wait_for_completion_timeout(&eh_done
, 5*HZ
)) {
675 ucmd
->to_do
= SYM_EH_DO_IGNORE
;
680 dev_warn(&cmd
->device
->sdev_gendev
, "%s operation %s.\n", opname
,
681 sts
==0 ? "complete" :sts
==-2 ? "timed-out" : "failed");
682 return sts
? SCSI_FAILED
: SCSI_SUCCESS
;
687 * Error handlers called from the eh thread (one thread per HBA).
689 static int sym53c8xx_eh_abort_handler(struct scsi_cmnd
*cmd
)
691 return sym_eh_handler(SYM_EH_ABORT
, "ABORT", cmd
);
694 static int sym53c8xx_eh_device_reset_handler(struct scsi_cmnd
*cmd
)
696 return sym_eh_handler(SYM_EH_DEVICE_RESET
, "DEVICE RESET", cmd
);
699 static int sym53c8xx_eh_bus_reset_handler(struct scsi_cmnd
*cmd
)
701 return sym_eh_handler(SYM_EH_BUS_RESET
, "BUS RESET", cmd
);
704 static int sym53c8xx_eh_host_reset_handler(struct scsi_cmnd
*cmd
)
706 return sym_eh_handler(SYM_EH_HOST_RESET
, "HOST RESET", cmd
);
710 * Tune device queuing depth, according to various limits.
712 static void sym_tune_dev_queuing(struct sym_tcb
*tp
, int lun
, u_short reqtags
)
714 struct sym_lcb
*lp
= sym_lp(tp
, lun
);
720 oldtags
= lp
->s
.reqtags
;
722 if (reqtags
> lp
->s
.scdev_depth
)
723 reqtags
= lp
->s
.scdev_depth
;
725 lp
->s
.reqtags
= reqtags
;
727 if (reqtags
!= oldtags
) {
728 dev_info(&tp
->starget
->dev
,
729 "tagged command queuing %s, command queue depth %d.\n",
730 lp
->s
.reqtags
? "enabled" : "disabled", reqtags
);
735 * Linux select queue depths function
737 #define DEF_DEPTH (sym_driver_setup.max_tag)
738 #define ALL_TARGETS -2
743 static int device_queue_depth(struct sym_hcb
*np
, int target
, int lun
)
746 char *p
= sym_driver_setup
.tag_ctrl
;
752 while ((c
= *p
++) != 0) {
753 v
= simple_strtoul(p
, &ep
, 0);
762 t
= (target
== v
) ? v
: NO_TARGET
;
767 u
= (lun
== v
) ? v
: NO_LUN
;
770 if (h
== np
->s
.unit
&&
771 (t
== ALL_TARGETS
|| t
== target
) &&
772 (u
== ALL_LUNS
|| u
== lun
))
787 static int sym53c8xx_slave_alloc(struct scsi_device
*sdev
)
789 struct sym_hcb
*np
= sym_get_hcb(sdev
->host
);
790 struct sym_tcb
*tp
= &np
->target
[sdev
->id
];
793 if (sdev
->id
>= SYM_CONF_MAX_TARGET
|| sdev
->lun
>= SYM_CONF_MAX_LUN
)
796 tp
->starget
= sdev
->sdev_target
;
798 * Fail the device init if the device is flagged NOSCAN at BOOT in
799 * the NVRAM. This may speed up boot and maintain coherency with
800 * BIOS device numbering. Clearing the flag allows the user to
801 * rescan skipped devices later. We also return an error for
802 * devices not flagged for SCAN LUNS in the NVRAM since some single
803 * lun devices behave badly when asked for a non zero LUN.
806 if (tp
->usrflags
& SYM_SCAN_BOOT_DISABLED
) {
807 tp
->usrflags
&= ~SYM_SCAN_BOOT_DISABLED
;
808 starget_printk(KERN_INFO
, tp
->starget
,
809 "Scan at boot disabled in NVRAM\n");
813 if (tp
->usrflags
& SYM_SCAN_LUNS_DISABLED
) {
816 starget_printk(KERN_INFO
, tp
->starget
,
817 "Multiple LUNs disabled in NVRAM\n");
820 lp
= sym_alloc_lcb(np
, sdev
->id
, sdev
->lun
);
824 spi_min_period(tp
->starget
) = tp
->usr_period
;
825 spi_max_width(tp
->starget
) = tp
->usr_width
;
831 * Linux entry point for device queue sizing.
833 static int sym53c8xx_slave_configure(struct scsi_device
*sdev
)
835 struct sym_hcb
*np
= sym_get_hcb(sdev
->host
);
836 struct sym_tcb
*tp
= &np
->target
[sdev
->id
];
837 struct sym_lcb
*lp
= sym_lp(tp
, sdev
->lun
);
838 int reqtags
, depth_to_use
;
843 lp
->curr_flags
= lp
->user_flags
;
846 * Select queue depth from driver setup.
847 * Donnot use more than configured by user.
849 * Donnot use more than our maximum.
851 reqtags
= device_queue_depth(np
, sdev
->id
, sdev
->lun
);
852 if (reqtags
> tp
->usrtags
)
853 reqtags
= tp
->usrtags
;
854 if (!sdev
->tagged_supported
)
856 #if 1 /* Avoid to locally queue commands for no good reasons */
857 if (reqtags
> SYM_CONF_MAX_TAG
)
858 reqtags
= SYM_CONF_MAX_TAG
;
859 depth_to_use
= (reqtags
? reqtags
: 2);
861 depth_to_use
= (reqtags
? SYM_CONF_MAX_TAG
: 2);
863 scsi_adjust_queue_depth(sdev
,
864 (sdev
->tagged_supported
?
867 lp
->s
.scdev_depth
= depth_to_use
;
868 sym_tune_dev_queuing(tp
, sdev
->lun
, reqtags
);
870 if (!spi_initial_dv(sdev
->sdev_target
))
876 static void sym53c8xx_slave_destroy(struct scsi_device
*sdev
)
878 struct sym_hcb
*np
= sym_get_hcb(sdev
->host
);
879 struct sym_lcb
*lp
= sym_lp(&np
->target
[sdev
->id
], sdev
->lun
);
882 sym_mfree_dma(lp
->itlq_tbl
, SYM_CONF_MAX_TASK
* 4, "ITLQ_TBL");
884 sym_mfree_dma(lp
, sizeof(*lp
), "LCB");
888 * Linux entry point for info() function
890 static const char *sym53c8xx_info (struct Scsi_Host
*host
)
892 return SYM_DRIVER_NAME
;
896 #ifdef SYM_LINUX_PROC_INFO_SUPPORT
898 * Proc file system stuff
900 * A read operation returns adapter information.
901 * A write operation is a control command.
902 * The string is parsed in the driver code and the command is passed
903 * to the sym_usercmd() function.
906 #ifdef SYM_LINUX_USER_COMMAND_SUPPORT
915 #define UC_SETSYNC 10
916 #define UC_SETTAGS 11
917 #define UC_SETDEBUG 12
918 #define UC_SETWIDE 14
919 #define UC_SETFLAG 15
920 #define UC_SETVERBOSE 17
921 #define UC_RESETDEV 18
922 #define UC_CLEARDEV 19
924 static void sym_exec_user_command (struct sym_hcb
*np
, struct sym_usrcmd
*uc
)
932 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT
934 sym_debug_flags
= uc
->data
;
938 np
->verbose
= uc
->data
;
942 * We assume that other commands apply to targets.
943 * This should always be the case and avoid the below
944 * 4 lines to be repeated 6 times.
946 for (t
= 0; t
< SYM_CONF_MAX_TARGET
; t
++) {
947 if (!((uc
->target
>> t
) & 1))
954 if (!uc
->data
|| uc
->data
>= 255) {
955 tp
->tgoal
.iu
= tp
->tgoal
.dt
=
957 tp
->tgoal
.offset
= 0;
958 } else if (uc
->data
<= 9 && np
->minsync_dt
) {
959 if (uc
->data
< np
->minsync_dt
)
960 uc
->data
= np
->minsync_dt
;
961 tp
->tgoal
.iu
= tp
->tgoal
.dt
=
964 tp
->tgoal
.period
= uc
->data
;
965 tp
->tgoal
.offset
= np
->maxoffs_dt
;
967 if (uc
->data
< np
->minsync
)
968 uc
->data
= np
->minsync
;
969 tp
->tgoal
.iu
= tp
->tgoal
.dt
=
971 tp
->tgoal
.period
= uc
->data
;
972 tp
->tgoal
.offset
= np
->maxoffs
;
974 tp
->tgoal
.check_nego
= 1;
977 tp
->tgoal
.width
= uc
->data
? 1 : 0;
978 tp
->tgoal
.check_nego
= 1;
981 for (l
= 0; l
< SYM_CONF_MAX_LUN
; l
++)
982 sym_tune_dev_queuing(tp
, l
, uc
->data
);
987 OUTB(np
, nc_istat
, SIGP
|SEM
);
990 for (l
= 0; l
< SYM_CONF_MAX_LUN
; l
++) {
991 struct sym_lcb
*lp
= sym_lp(tp
, l
);
992 if (lp
) lp
->to_clear
= 1;
995 OUTB(np
, nc_istat
, SIGP
|SEM
);
998 tp
->usrflags
= uc
->data
;
1006 static int skip_spaces(char *ptr
, int len
)
1010 for (cnt
= len
; cnt
> 0 && (c
= *ptr
++) && isspace(c
); cnt
--);
1015 static int get_int_arg(char *ptr
, int len
, u_long
*pv
)
1019 *pv
= simple_strtoul(ptr
, &end
, 10);
1023 static int is_keyword(char *ptr
, int len
, char *verb
)
1025 int verb_len
= strlen(verb
);
1027 if (len
>= verb_len
&& !memcmp(verb
, ptr
, verb_len
))
1033 #define SKIP_SPACES(ptr, len) \
1034 if ((arg_len = skip_spaces(ptr, len)) < 1) \
1036 ptr += arg_len; len -= arg_len;
1038 #define GET_INT_ARG(ptr, len, v) \
1039 if (!(arg_len = get_int_arg(ptr, len, &(v)))) \
1041 ptr += arg_len; len -= arg_len;
1045 * Parse a control command
1048 static int sym_user_command(struct sym_hcb
*np
, char *buffer
, int length
)
1052 struct sym_usrcmd cmd
, *uc
= &cmd
;
1056 memset(uc
, 0, sizeof(*uc
));
1058 if (len
> 0 && ptr
[len
-1] == '\n')
1061 if ((arg_len
= is_keyword(ptr
, len
, "setsync")) != 0)
1062 uc
->cmd
= UC_SETSYNC
;
1063 else if ((arg_len
= is_keyword(ptr
, len
, "settags")) != 0)
1064 uc
->cmd
= UC_SETTAGS
;
1065 else if ((arg_len
= is_keyword(ptr
, len
, "setverbose")) != 0)
1066 uc
->cmd
= UC_SETVERBOSE
;
1067 else if ((arg_len
= is_keyword(ptr
, len
, "setwide")) != 0)
1068 uc
->cmd
= UC_SETWIDE
;
1069 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT
1070 else if ((arg_len
= is_keyword(ptr
, len
, "setdebug")) != 0)
1071 uc
->cmd
= UC_SETDEBUG
;
1073 else if ((arg_len
= is_keyword(ptr
, len
, "setflag")) != 0)
1074 uc
->cmd
= UC_SETFLAG
;
1075 else if ((arg_len
= is_keyword(ptr
, len
, "resetdev")) != 0)
1076 uc
->cmd
= UC_RESETDEV
;
1077 else if ((arg_len
= is_keyword(ptr
, len
, "cleardev")) != 0)
1078 uc
->cmd
= UC_CLEARDEV
;
1082 #ifdef DEBUG_PROC_INFO
1083 printk("sym_user_command: arg_len=%d, cmd=%ld\n", arg_len
, uc
->cmd
);
1088 ptr
+= arg_len
; len
-= arg_len
;
1097 SKIP_SPACES(ptr
, len
);
1098 if ((arg_len
= is_keyword(ptr
, len
, "all")) != 0) {
1099 ptr
+= arg_len
; len
-= arg_len
;
1102 GET_INT_ARG(ptr
, len
, target
);
1103 uc
->target
= (1<<target
);
1104 #ifdef DEBUG_PROC_INFO
1105 printk("sym_user_command: target=%ld\n", target
);
1116 SKIP_SPACES(ptr
, len
);
1117 GET_INT_ARG(ptr
, len
, uc
->data
);
1118 #ifdef DEBUG_PROC_INFO
1119 printk("sym_user_command: data=%ld\n", uc
->data
);
1122 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT
1125 SKIP_SPACES(ptr
, len
);
1126 if ((arg_len
= is_keyword(ptr
, len
, "alloc")))
1127 uc
->data
|= DEBUG_ALLOC
;
1128 else if ((arg_len
= is_keyword(ptr
, len
, "phase")))
1129 uc
->data
|= DEBUG_PHASE
;
1130 else if ((arg_len
= is_keyword(ptr
, len
, "queue")))
1131 uc
->data
|= DEBUG_QUEUE
;
1132 else if ((arg_len
= is_keyword(ptr
, len
, "result")))
1133 uc
->data
|= DEBUG_RESULT
;
1134 else if ((arg_len
= is_keyword(ptr
, len
, "scatter")))
1135 uc
->data
|= DEBUG_SCATTER
;
1136 else if ((arg_len
= is_keyword(ptr
, len
, "script")))
1137 uc
->data
|= DEBUG_SCRIPT
;
1138 else if ((arg_len
= is_keyword(ptr
, len
, "tiny")))
1139 uc
->data
|= DEBUG_TINY
;
1140 else if ((arg_len
= is_keyword(ptr
, len
, "timing")))
1141 uc
->data
|= DEBUG_TIMING
;
1142 else if ((arg_len
= is_keyword(ptr
, len
, "nego")))
1143 uc
->data
|= DEBUG_NEGO
;
1144 else if ((arg_len
= is_keyword(ptr
, len
, "tags")))
1145 uc
->data
|= DEBUG_TAGS
;
1146 else if ((arg_len
= is_keyword(ptr
, len
, "pointer")))
1147 uc
->data
|= DEBUG_POINTER
;
1150 ptr
+= arg_len
; len
-= arg_len
;
1152 #ifdef DEBUG_PROC_INFO
1153 printk("sym_user_command: data=%ld\n", uc
->data
);
1156 #endif /* SYM_LINUX_DEBUG_CONTROL_SUPPORT */
1159 SKIP_SPACES(ptr
, len
);
1160 if ((arg_len
= is_keyword(ptr
, len
, "no_disc")))
1161 uc
->data
&= ~SYM_DISC_ENABLED
;
1164 ptr
+= arg_len
; len
-= arg_len
;
1174 unsigned long flags
;
1176 spin_lock_irqsave(np
->s
.host
->host_lock
, flags
);
1177 sym_exec_user_command (np
, uc
);
1178 spin_unlock_irqrestore(np
->s
.host
->host_lock
, flags
);
1183 #endif /* SYM_LINUX_USER_COMMAND_SUPPORT */
1186 #ifdef SYM_LINUX_USER_INFO_SUPPORT
1188 * Informations through the proc file system.
1197 static void copy_mem_info(struct info_str
*info
, char *data
, int len
)
1199 if (info
->pos
+ len
> info
->length
)
1200 len
= info
->length
- info
->pos
;
1202 if (info
->pos
+ len
< info
->offset
) {
1206 if (info
->pos
< info
->offset
) {
1207 data
+= (info
->offset
- info
->pos
);
1208 len
-= (info
->offset
- info
->pos
);
1212 memcpy(info
->buffer
+ info
->pos
, data
, len
);
1217 static int copy_info(struct info_str
*info
, char *fmt
, ...)
1223 va_start(args
, fmt
);
1224 len
= vsprintf(buf
, fmt
, args
);
1227 copy_mem_info(info
, buf
, len
);
1232 * Copy formatted information into the input buffer.
1234 static int sym_host_info(struct sym_hcb
*np
, char *ptr
, off_t offset
, int len
)
1236 struct info_str info
;
1240 info
.offset
= offset
;
1243 copy_info(&info
, "Chip " NAME53C
"%s, device id 0x%x, "
1244 "revision id 0x%x\n",
1245 np
->s
.chip_name
, np
->device_id
, np
->revision_id
);
1246 copy_info(&info
, "At PCI address %s, IRQ " IRQ_FMT
"\n",
1247 pci_name(np
->s
.device
), IRQ_PRM(np
->s
.device
->irq
));
1248 copy_info(&info
, "Min. period factor %d, %s SCSI BUS%s\n",
1249 (int) (np
->minsync_dt
? np
->minsync_dt
: np
->minsync
),
1250 np
->maxwide
? "Wide" : "Narrow",
1251 np
->minsync_dt
? ", DT capable" : "");
1253 copy_info(&info
, "Max. started commands %d, "
1254 "max. commands per LUN %d\n",
1255 SYM_CONF_MAX_START
, SYM_CONF_MAX_TAG
);
1257 return info
.pos
> info
.offset
? info
.pos
- info
.offset
: 0;
1259 #endif /* SYM_LINUX_USER_INFO_SUPPORT */
1262 * Entry point of the scsi proc fs of the driver.
1263 * - func = 0 means read (returns adapter infos)
1264 * - func = 1 means write (not yet merget from sym53c8xx)
1266 static int sym53c8xx_proc_info(struct Scsi_Host
*host
, char *buffer
,
1267 char **start
, off_t offset
, int length
, int func
)
1269 struct sym_hcb
*np
= sym_get_hcb(host
);
1273 #ifdef SYM_LINUX_USER_COMMAND_SUPPORT
1274 retv
= sym_user_command(np
, buffer
, length
);
1281 #ifdef SYM_LINUX_USER_INFO_SUPPORT
1282 retv
= sym_host_info(np
, buffer
, offset
, length
);
1290 #endif /* SYM_LINUX_PROC_INFO_SUPPORT */
1293 * Free controller resources.
1295 static void sym_free_resources(struct sym_hcb
*np
, struct pci_dev
*pdev
)
1298 * Free O/S specific resources.
1301 free_irq(pdev
->irq
, np
);
1303 pci_iounmap(pdev
, np
->s
.ioaddr
);
1305 pci_iounmap(pdev
, np
->s
.ramaddr
);
1307 * Free O/S independent resources.
1311 sym_mfree_dma(np
, sizeof(*np
), "HCB");
1315 * Ask/tell the system about DMA addressing.
1317 static int sym_setup_bus_dma_mask(struct sym_hcb
*np
)
1319 #if SYM_CONF_DMA_ADDRESSING_MODE > 0
1320 #if SYM_CONF_DMA_ADDRESSING_MODE == 1
1321 #define DMA_DAC_MASK DMA_40BIT_MASK
1322 #elif SYM_CONF_DMA_ADDRESSING_MODE == 2
1323 #define DMA_DAC_MASK DMA_64BIT_MASK
1325 if ((np
->features
& FE_DAC
) &&
1326 !pci_set_dma_mask(np
->s
.device
, DMA_DAC_MASK
)) {
1332 if (!pci_set_dma_mask(np
->s
.device
, DMA_32BIT_MASK
))
1335 printf_warning("%s: No suitable DMA available\n", sym_name(np
));
1340 * Host attach and initialisations.
1342 * Allocate host data and ncb structure.
1343 * Remap MMIO region.
1344 * Do chip initialization.
1345 * If all is OK, install interrupt handling and
1346 * start the timer daemon.
1348 static struct Scsi_Host
* __devinit
sym_attach(struct scsi_host_template
*tpnt
,
1349 int unit
, struct sym_device
*dev
)
1351 struct host_data
*host_data
;
1352 struct sym_hcb
*np
= NULL
;
1353 struct Scsi_Host
*instance
= NULL
;
1354 struct pci_dev
*pdev
= dev
->pdev
;
1355 unsigned long flags
;
1359 "sym%d: <%s> rev 0x%x at pci %s irq " IRQ_FMT
"\n",
1360 unit
, dev
->chip
.name
, dev
->chip
.revision_id
,
1361 pci_name(pdev
), IRQ_PRM(pdev
->irq
));
1364 * Get the firmware for this chip.
1366 fw
= sym_find_firmware(&dev
->chip
);
1371 * Allocate host_data structure
1373 instance
= scsi_host_alloc(tpnt
, sizeof(*host_data
));
1376 host_data
= (struct host_data
*) instance
->hostdata
;
1379 * Allocate immediately the host control block,
1380 * since we are only expecting to succeed. :)
1381 * We keep track in the HCB of all the resources that
1382 * are to be released on error.
1384 np
= __sym_calloc_dma(&pdev
->dev
, sizeof(*np
), "HCB");
1387 np
->s
.device
= pdev
;
1388 np
->bus_dmat
= &pdev
->dev
; /* Result in 1 DMA pool per HBA */
1389 host_data
->ncb
= np
;
1390 np
->s
.host
= instance
;
1392 pci_set_drvdata(pdev
, np
);
1395 * Copy some useful infos to the HCB.
1397 np
->hcb_ba
= vtobus(np
);
1398 np
->verbose
= sym_driver_setup
.verbose
;
1399 np
->s
.device
= pdev
;
1401 np
->device_id
= dev
->chip
.device_id
;
1402 np
->revision_id
= dev
->chip
.revision_id
;
1403 np
->features
= dev
->chip
.features
;
1404 np
->clock_divn
= dev
->chip
.nr_divisor
;
1405 np
->maxoffs
= dev
->chip
.offset_max
;
1406 np
->maxburst
= dev
->chip
.burst_max
;
1407 np
->myaddr
= dev
->host_id
;
1412 strlcpy(np
->s
.chip_name
, dev
->chip
.name
, sizeof(np
->s
.chip_name
));
1413 sprintf(np
->s
.inst_name
, "sym%d", np
->s
.unit
);
1415 if (sym_setup_bus_dma_mask(np
))
1419 * Try to map the controller chip to
1420 * virtual and physical memory.
1422 np
->mmio_ba
= (u32
)dev
->mmio_base
;
1423 np
->s
.ioaddr
= dev
->s
.ioaddr
;
1424 np
->s
.ramaddr
= dev
->s
.ramaddr
;
1425 np
->s
.io_ws
= (np
->features
& FE_IO256
) ? 256 : 128;
1428 * Map on-chip RAM if present and supported.
1430 if (!(np
->features
& FE_RAM
))
1432 if (dev
->ram_base
) {
1433 np
->ram_ba
= (u32
)dev
->ram_base
;
1434 np
->ram_ws
= (np
->features
& FE_RAM8K
) ? 8192 : 4096;
1437 if (sym_hcb_attach(instance
, fw
, dev
->nvram
))
1441 * Install the interrupt handler.
1442 * If we synchonize the C code with SCRIPTS on interrupt,
1443 * we do not want to share the INTR line at all.
1445 if (request_irq(pdev
->irq
, sym53c8xx_intr
, IRQF_SHARED
, NAME53C8XX
, np
)) {
1446 printf_err("%s: request irq %d failure\n",
1447 sym_name(np
), pdev
->irq
);
1452 * After SCSI devices have been opened, we cannot
1453 * reset the bus safely, so we do it here.
1455 spin_lock_irqsave(instance
->host_lock
, flags
);
1456 if (sym_reset_scsi_bus(np
, 0))
1460 * Start the SCRIPTS.
1462 sym_start_up (np
, 1);
1465 * Start the timer daemon
1467 init_timer(&np
->s
.timer
);
1468 np
->s
.timer
.data
= (unsigned long) np
;
1469 np
->s
.timer
.function
= sym53c8xx_timer
;
1474 * Fill Linux host instance structure
1475 * and return success.
1477 instance
->max_channel
= 0;
1478 instance
->this_id
= np
->myaddr
;
1479 instance
->max_id
= np
->maxwide
? 16 : 8;
1480 instance
->max_lun
= SYM_CONF_MAX_LUN
;
1481 instance
->unique_id
= pci_resource_start(pdev
, 0);
1482 instance
->cmd_per_lun
= SYM_CONF_MAX_TAG
;
1483 instance
->can_queue
= (SYM_CONF_MAX_START
-2);
1484 instance
->sg_tablesize
= SYM_CONF_MAX_SG
;
1485 instance
->max_cmd_len
= 16;
1486 BUG_ON(sym2_transport_template
== NULL
);
1487 instance
->transportt
= sym2_transport_template
;
1489 /* 53c896 rev 1 errata: DMA may not cross 16MB boundary */
1490 if (pdev
->device
== PCI_DEVICE_ID_NCR_53C896
&& np
->revision_id
< 2)
1491 instance
->dma_boundary
= 0xFFFFFF;
1493 spin_unlock_irqrestore(instance
->host_lock
, flags
);
1498 printf_err("%s: FATAL ERROR: CHECK SCSI BUS - CABLES, "
1499 "TERMINATION, DEVICE POWER etc.!\n", sym_name(np
));
1500 spin_unlock_irqrestore(instance
->host_lock
, flags
);
1504 printf_info("%s: giving up ...\n", sym_name(np
));
1506 sym_free_resources(np
, pdev
);
1507 scsi_host_put(instance
);
1514 * Detect and try to read SYMBIOS and TEKRAM NVRAM.
1516 #if SYM_CONF_NVRAM_SUPPORT
1517 static void __devinit
sym_get_nvram(struct sym_device
*devp
, struct sym_nvram
*nvp
)
1520 devp
->device_id
= devp
->chip
.device_id
;
1523 sym_read_nvram(devp
, nvp
);
1526 static inline void sym_get_nvram(struct sym_device
*devp
, struct sym_nvram
*nvp
)
1529 #endif /* SYM_CONF_NVRAM_SUPPORT */
1531 static int __devinit
sym_check_supported(struct sym_device
*device
)
1533 struct sym_chip
*chip
;
1534 struct pci_dev
*pdev
= device
->pdev
;
1536 unsigned long io_port
= pci_resource_start(pdev
, 0);
1540 * If user excluded this chip, do not initialize it.
1541 * I hate this code so much. Must kill it.
1544 for (i
= 0 ; i
< 8 ; i
++) {
1545 if (sym_driver_setup
.excludes
[i
] == io_port
)
1551 * Check if the chip is supported. Then copy the chip description
1552 * to our device structure so we can make it match the actual device
1555 pci_read_config_byte(pdev
, PCI_CLASS_REVISION
, &revision
);
1556 chip
= sym_lookup_chip_table(pdev
->device
, revision
);
1558 dev_info(&pdev
->dev
, "device not supported\n");
1561 memcpy(&device
->chip
, chip
, sizeof(device
->chip
));
1562 device
->chip
.revision_id
= revision
;
1568 * Ignore Symbios chips controlled by various RAID controllers.
1569 * These controllers set value 0x52414944 at RAM end - 16.
1571 static int __devinit
sym_check_raid(struct sym_device
*device
)
1573 unsigned int ram_size
, ram_val
;
1575 if (!device
->s
.ramaddr
)
1578 if (device
->chip
.features
& FE_RAM8K
)
1583 ram_val
= readl(device
->s
.ramaddr
+ ram_size
- 16);
1584 if (ram_val
!= 0x52414944)
1587 dev_info(&device
->pdev
->dev
,
1588 "not initializing, driven by RAID controller.\n");
1592 static int __devinit
sym_set_workarounds(struct sym_device
*device
)
1594 struct sym_chip
*chip
= &device
->chip
;
1595 struct pci_dev
*pdev
= device
->pdev
;
1599 * (ITEM 12 of a DEL about the 896 I haven't yet).
1600 * We must ensure the chip will use WRITE AND INVALIDATE.
1601 * The revision number limit is for now arbitrary.
1603 if (pdev
->device
== PCI_DEVICE_ID_NCR_53C896
&& chip
->revision_id
< 0x4) {
1604 chip
->features
|= (FE_WRIE
| FE_CLSE
);
1607 /* If the chip can do Memory Write Invalidate, enable it */
1608 if (chip
->features
& FE_WRIE
) {
1609 if (pci_set_mwi(pdev
))
1614 * Work around for errant bit in 895A. The 66Mhz
1615 * capable bit is set erroneously. Clear this bit.
1618 * Make sure Config space and Features agree.
1620 * Recall: writes are not normal to status register -
1621 * write a 1 to clear and a 0 to leave unchanged.
1622 * Can only reset bits.
1624 pci_read_config_word(pdev
, PCI_STATUS
, &status_reg
);
1625 if (chip
->features
& FE_66MHZ
) {
1626 if (!(status_reg
& PCI_STATUS_66MHZ
))
1627 chip
->features
&= ~FE_66MHZ
;
1629 if (status_reg
& PCI_STATUS_66MHZ
) {
1630 status_reg
= PCI_STATUS_66MHZ
;
1631 pci_write_config_word(pdev
, PCI_STATUS
, status_reg
);
1632 pci_read_config_word(pdev
, PCI_STATUS
, &status_reg
);
1640 * Read and check the PCI configuration for any detected NCR
1641 * boards and save data for attaching after all boards have
1644 static void __devinit
1645 sym_init_device(struct pci_dev
*pdev
, struct sym_device
*device
)
1648 struct pci_bus_region bus_addr
;
1650 device
->host_id
= SYM_SETUP_HOST_ID
;
1651 device
->pdev
= pdev
;
1653 pcibios_resource_to_bus(pdev
, &bus_addr
, &pdev
->resource
[1]);
1654 device
->mmio_base
= bus_addr
.start
;
1657 * If the BAR is 64-bit, resource 2 will be occupied by the
1660 if (!pdev
->resource
[i
].flags
)
1662 pcibios_resource_to_bus(pdev
, &bus_addr
, &pdev
->resource
[i
]);
1663 device
->ram_base
= bus_addr
.start
;
1665 #ifdef CONFIG_SCSI_SYM53C8XX_MMIO
1666 if (device
->mmio_base
)
1667 device
->s
.ioaddr
= pci_iomap(pdev
, 1,
1668 pci_resource_len(pdev
, 1));
1670 if (!device
->s
.ioaddr
)
1671 device
->s
.ioaddr
= pci_iomap(pdev
, 0,
1672 pci_resource_len(pdev
, 0));
1673 if (device
->ram_base
)
1674 device
->s
.ramaddr
= pci_iomap(pdev
, i
,
1675 pci_resource_len(pdev
, i
));
1679 * The NCR PQS and PDS cards are constructed as a DEC bridge
1680 * behind which sits a proprietary NCR memory controller and
1681 * either four or two 53c875s as separate devices. We can tell
1682 * if an 875 is part of a PQS/PDS or not since if it is, it will
1683 * be on the same bus as the memory controller. In its usual
1684 * mode of operation, the 875s are slaved to the memory
1685 * controller for all transfers. To operate with the Linux
1686 * driver, the memory controller is disabled and the 875s
1687 * freed to function independently. The only wrinkle is that
1688 * the preset SCSI ID (which may be zero) must be read in from
1689 * a special configuration space register of the 875.
1691 static void sym_config_pqs(struct pci_dev
*pdev
, struct sym_device
*sym_dev
)
1696 for (slot
= 0; slot
< 256; slot
++) {
1697 struct pci_dev
*memc
= pci_get_slot(pdev
->bus
, slot
);
1699 if (!memc
|| memc
->vendor
!= 0x101a || memc
->device
== 0x0009) {
1704 /* bit 1: allow individual 875 configuration */
1705 pci_read_config_byte(memc
, 0x44, &tmp
);
1706 if ((tmp
& 0x2) == 0) {
1708 pci_write_config_byte(memc
, 0x44, tmp
);
1711 /* bit 2: drive individual 875 interrupts to the bus */
1712 pci_read_config_byte(memc
, 0x45, &tmp
);
1713 if ((tmp
& 0x4) == 0) {
1715 pci_write_config_byte(memc
, 0x45, tmp
);
1722 pci_read_config_byte(pdev
, 0x84, &tmp
);
1723 sym_dev
->host_id
= tmp
;
1727 * Called before unloading the module.
1729 * We have to free resources and halt the NCR chip.
1731 static int sym_detach(struct sym_hcb
*np
, struct pci_dev
*pdev
)
1733 printk("%s: detaching ...\n", sym_name(np
));
1735 del_timer_sync(&np
->s
.timer
);
1739 * We should use sym_soft_reset(), but we don't want to do
1740 * so, since we may not be safe if interrupts occur.
1742 printk("%s: resetting chip\n", sym_name(np
));
1743 OUTB(np
, nc_istat
, SRST
);
1746 OUTB(np
, nc_istat
, 0);
1748 sym_free_resources(np
, pdev
);
1754 * Driver host template.
1756 static struct scsi_host_template sym2_template
= {
1757 .module
= THIS_MODULE
,
1758 .name
= "sym53c8xx",
1759 .info
= sym53c8xx_info
,
1760 .queuecommand
= sym53c8xx_queue_command
,
1761 .slave_alloc
= sym53c8xx_slave_alloc
,
1762 .slave_configure
= sym53c8xx_slave_configure
,
1763 .slave_destroy
= sym53c8xx_slave_destroy
,
1764 .eh_abort_handler
= sym53c8xx_eh_abort_handler
,
1765 .eh_device_reset_handler
= sym53c8xx_eh_device_reset_handler
,
1766 .eh_bus_reset_handler
= sym53c8xx_eh_bus_reset_handler
,
1767 .eh_host_reset_handler
= sym53c8xx_eh_host_reset_handler
,
1769 .use_clustering
= ENABLE_CLUSTERING
,
1770 .use_sg_chaining
= ENABLE_SG_CHAINING
,
1771 .max_sectors
= 0xFFFF,
1772 #ifdef SYM_LINUX_PROC_INFO_SUPPORT
1773 .proc_info
= sym53c8xx_proc_info
,
1774 .proc_name
= NAME53C8XX
,
1778 static int attach_count
;
1780 static int __devinit
sym2_probe(struct pci_dev
*pdev
,
1781 const struct pci_device_id
*ent
)
1783 struct sym_device sym_dev
;
1784 struct sym_nvram nvram
;
1785 struct Scsi_Host
*instance
;
1787 memset(&sym_dev
, 0, sizeof(sym_dev
));
1788 memset(&nvram
, 0, sizeof(nvram
));
1790 if (pci_enable_device(pdev
))
1793 pci_set_master(pdev
);
1795 if (pci_request_regions(pdev
, NAME53C8XX
))
1798 sym_init_device(pdev
, &sym_dev
);
1799 if (sym_check_supported(&sym_dev
))
1802 if (sym_check_raid(&sym_dev
))
1803 goto leave
; /* Don't disable the device */
1805 if (sym_set_workarounds(&sym_dev
))
1808 sym_config_pqs(pdev
, &sym_dev
);
1810 sym_get_nvram(&sym_dev
, &nvram
);
1812 instance
= sym_attach(&sym2_template
, attach_count
, &sym_dev
);
1816 if (scsi_add_host(instance
, &pdev
->dev
))
1818 scsi_scan_host(instance
);
1825 sym_detach(pci_get_drvdata(pdev
), pdev
);
1827 pci_release_regions(pdev
);
1829 pci_disable_device(pdev
);
1834 static void __devexit
sym2_remove(struct pci_dev
*pdev
)
1836 struct sym_hcb
*np
= pci_get_drvdata(pdev
);
1837 struct Scsi_Host
*host
= np
->s
.host
;
1839 scsi_remove_host(host
);
1840 scsi_host_put(host
);
1842 sym_detach(np
, pdev
);
1844 pci_release_regions(pdev
);
1845 pci_disable_device(pdev
);
1850 static void sym2_get_signalling(struct Scsi_Host
*shost
)
1852 struct sym_hcb
*np
= sym_get_hcb(shost
);
1853 enum spi_signal_type type
;
1855 switch (np
->scsi_mode
) {
1857 type
= SPI_SIGNAL_SE
;
1860 type
= SPI_SIGNAL_LVD
;
1863 type
= SPI_SIGNAL_HVD
;
1866 type
= SPI_SIGNAL_UNKNOWN
;
1869 spi_signalling(shost
) = type
;
1872 static void sym2_set_offset(struct scsi_target
*starget
, int offset
)
1874 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
1875 struct sym_hcb
*np
= sym_get_hcb(shost
);
1876 struct sym_tcb
*tp
= &np
->target
[starget
->id
];
1878 tp
->tgoal
.offset
= offset
;
1879 tp
->tgoal
.check_nego
= 1;
1882 static void sym2_set_period(struct scsi_target
*starget
, int period
)
1884 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
1885 struct sym_hcb
*np
= sym_get_hcb(shost
);
1886 struct sym_tcb
*tp
= &np
->target
[starget
->id
];
1888 /* have to have DT for these transfers, but DT will also
1889 * set width, so check that this is allowed */
1890 if (period
<= np
->minsync
&& spi_width(starget
))
1893 tp
->tgoal
.period
= period
;
1894 tp
->tgoal
.check_nego
= 1;
1897 static void sym2_set_width(struct scsi_target
*starget
, int width
)
1899 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
1900 struct sym_hcb
*np
= sym_get_hcb(shost
);
1901 struct sym_tcb
*tp
= &np
->target
[starget
->id
];
1903 /* It is illegal to have DT set on narrow transfers. If DT is
1904 * clear, we must also clear IU and QAS. */
1906 tp
->tgoal
.iu
= tp
->tgoal
.dt
= tp
->tgoal
.qas
= 0;
1908 tp
->tgoal
.width
= width
;
1909 tp
->tgoal
.check_nego
= 1;
1912 static void sym2_set_dt(struct scsi_target
*starget
, int dt
)
1914 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
1915 struct sym_hcb
*np
= sym_get_hcb(shost
);
1916 struct sym_tcb
*tp
= &np
->target
[starget
->id
];
1918 /* We must clear QAS and IU if DT is clear */
1922 tp
->tgoal
.iu
= tp
->tgoal
.dt
= tp
->tgoal
.qas
= 0;
1923 tp
->tgoal
.check_nego
= 1;
1927 static void sym2_set_iu(struct scsi_target
*starget
, int iu
)
1929 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
1930 struct sym_hcb
*np
= sym_get_hcb(shost
);
1931 struct sym_tcb
*tp
= &np
->target
[starget
->id
];
1934 tp
->tgoal
.iu
= tp
->tgoal
.dt
= 1;
1937 tp
->tgoal
.check_nego
= 1;
1940 static void sym2_set_qas(struct scsi_target
*starget
, int qas
)
1942 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
1943 struct sym_hcb
*np
= sym_get_hcb(shost
);
1944 struct sym_tcb
*tp
= &np
->target
[starget
->id
];
1947 tp
->tgoal
.dt
= tp
->tgoal
.qas
= 1;
1950 tp
->tgoal
.check_nego
= 1;
1954 static struct spi_function_template sym2_transport_functions
= {
1955 .set_offset
= sym2_set_offset
,
1957 .set_period
= sym2_set_period
,
1959 .set_width
= sym2_set_width
,
1961 .set_dt
= sym2_set_dt
,
1964 .set_iu
= sym2_set_iu
,
1966 .set_qas
= sym2_set_qas
,
1969 .get_signalling
= sym2_get_signalling
,
1972 static struct pci_device_id sym2_id_table
[] __devinitdata
= {
1973 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C810
,
1974 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
1975 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C820
,
1976 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL }, /* new */
1977 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C825
,
1978 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
1979 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C815
,
1980 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
1981 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_LSI_53C810AP
,
1982 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL }, /* new */
1983 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C860
,
1984 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
1985 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_LSI_53C1510
,
1986 PCI_ANY_ID
, PCI_ANY_ID
, PCI_CLASS_STORAGE_SCSI
<<8, 0xffff00, 0UL },
1987 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C896
,
1988 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
1989 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C895
,
1990 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
1991 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C885
,
1992 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
1993 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C875
,
1994 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
1995 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C1510
,
1996 PCI_ANY_ID
, PCI_ANY_ID
, PCI_CLASS_STORAGE_SCSI
<<8, 0xffff00, 0UL }, /* new */
1997 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_LSI_53C895A
,
1998 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
1999 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_LSI_53C875A
,
2000 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2001 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_LSI_53C1010_33
,
2002 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2003 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_LSI_53C1010_66
,
2004 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2005 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C875J
,
2006 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2010 MODULE_DEVICE_TABLE(pci
, sym2_id_table
);
2012 static struct pci_driver sym2_driver
= {
2014 .id_table
= sym2_id_table
,
2015 .probe
= sym2_probe
,
2016 .remove
= __devexit_p(sym2_remove
),
2019 static int __init
sym2_init(void)
2023 sym2_setup_params();
2024 sym2_transport_template
= spi_attach_transport(&sym2_transport_functions
);
2025 if (!sym2_transport_template
)
2028 error
= pci_register_driver(&sym2_driver
);
2030 spi_release_transport(sym2_transport_template
);
2034 static void __exit
sym2_exit(void)
2036 pci_unregister_driver(&sym2_driver
);
2037 spi_release_transport(sym2_transport_template
);
2040 module_init(sym2_init
);
2041 module_exit(sym2_exit
);