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 dma_addr_t data_mapping
;
138 unsigned char data_mapped
;
139 unsigned char to_do
; /* For error handling */
140 void (*old_done
)(struct scsi_cmnd
*); /* For error handling */
141 struct completion
*eh_done
; /* For error handling */
144 #define SYM_UCMD_PTR(cmd) ((struct sym_ucmd *)(&(cmd)->SCp))
145 #define SYM_SOFTC_PTR(cmd) sym_get_hcb(cmd->device->host)
147 static void __unmap_scsi_data(struct pci_dev
*pdev
, struct scsi_cmnd
*cmd
)
149 if (SYM_UCMD_PTR(cmd
)->data_mapped
)
152 SYM_UCMD_PTR(cmd
)->data_mapped
= 0;
155 static int __map_scsi_sg_data(struct pci_dev
*pdev
, struct scsi_cmnd
*cmd
)
159 use_sg
= scsi_dma_map(cmd
);
161 SYM_UCMD_PTR(cmd
)->data_mapped
= 2;
162 SYM_UCMD_PTR(cmd
)->data_mapping
= use_sg
;
168 #define unmap_scsi_data(np, cmd) \
169 __unmap_scsi_data(np->s.device, cmd)
170 #define map_scsi_sg_data(np, cmd) \
171 __map_scsi_sg_data(np->s.device, cmd)
173 * Complete a pending CAM CCB.
175 void sym_xpt_done(struct sym_hcb
*np
, struct scsi_cmnd
*cmd
)
177 unmap_scsi_data(np
, cmd
);
181 static void sym_xpt_done2(struct sym_hcb
*np
, struct scsi_cmnd
*cmd
, int cam_status
)
183 sym_set_cam_status(cmd
, cam_status
);
184 sym_xpt_done(np
, cmd
);
189 * Tell the SCSI layer about a BUS RESET.
191 void sym_xpt_async_bus_reset(struct sym_hcb
*np
)
193 printf_notice("%s: SCSI BUS has been reset.\n", sym_name(np
));
194 np
->s
.settle_time
= jiffies
+ sym_driver_setup
.settle_delay
* HZ
;
195 np
->s
.settle_time_valid
= 1;
196 if (sym_verbose
>= 2)
197 printf_info("%s: command processing suspended for %d seconds\n",
198 sym_name(np
), sym_driver_setup
.settle_delay
);
202 * Tell the SCSI layer about a BUS DEVICE RESET message sent.
204 void sym_xpt_async_sent_bdr(struct sym_hcb
*np
, int target
)
206 printf_notice("%s: TARGET %d has been reset.\n", sym_name(np
), target
);
210 * Choose the more appropriate CAM status if
211 * the IO encountered an extended error.
213 static int sym_xerr_cam_status(int cam_status
, int x_status
)
216 if (x_status
& XE_PARITY_ERR
)
217 cam_status
= DID_PARITY
;
218 else if (x_status
&(XE_EXTRA_DATA
|XE_SODL_UNRUN
|XE_SWIDE_OVRUN
))
219 cam_status
= DID_ERROR
;
220 else if (x_status
& XE_BAD_PHASE
)
221 cam_status
= DID_ERROR
;
223 cam_status
= DID_ERROR
;
229 * Build CAM result for a failed or auto-sensed IO.
231 void sym_set_cam_result_error(struct sym_hcb
*np
, struct sym_ccb
*cp
, int resid
)
233 struct scsi_cmnd
*cmd
= cp
->cmd
;
234 u_int cam_status
, scsi_status
, drv_status
;
238 scsi_status
= cp
->ssss_status
;
240 if (cp
->host_flags
& HF_SENSE
) {
241 scsi_status
= cp
->sv_scsi_status
;
242 resid
= cp
->sv_resid
;
243 if (sym_verbose
&& cp
->sv_xerr_status
)
244 sym_print_xerr(cmd
, cp
->sv_xerr_status
);
245 if (cp
->host_status
== HS_COMPLETE
&&
246 cp
->ssss_status
== S_GOOD
&&
247 cp
->xerr_status
== 0) {
248 cam_status
= sym_xerr_cam_status(DID_OK
,
250 drv_status
= DRIVER_SENSE
;
252 * Bounce back the sense data to user.
254 memset(&cmd
->sense_buffer
, 0, sizeof(cmd
->sense_buffer
));
255 memcpy(cmd
->sense_buffer
, cp
->sns_bbuf
,
256 min(sizeof(cmd
->sense_buffer
),
257 (size_t)SYM_SNS_BBUF_LEN
));
260 * If the device reports a UNIT ATTENTION condition
261 * due to a RESET condition, we should consider all
262 * disconnect CCBs for this unit as aborted.
266 p
= (u_char
*) cmd
->sense_data
;
267 if (p
[0]==0x70 && p
[2]==0x6 && p
[12]==0x29)
268 sym_clear_tasks(np
, DID_ABORT
,
269 cp
->target
,cp
->lun
, -1);
274 * Error return from our internal request sense. This
275 * is bad: we must clear the contingent allegiance
276 * condition otherwise the device will always return
277 * BUSY. Use a big stick.
279 sym_reset_scsi_target(np
, cmd
->device
->id
);
280 cam_status
= DID_ERROR
;
282 } else if (cp
->host_status
== HS_COMPLETE
) /* Bad SCSI status */
284 else if (cp
->host_status
== HS_SEL_TIMEOUT
) /* Selection timeout */
285 cam_status
= DID_NO_CONNECT
;
286 else if (cp
->host_status
== HS_UNEXPECTED
) /* Unexpected BUS FREE*/
287 cam_status
= DID_ERROR
;
288 else { /* Extended error */
290 sym_print_addr(cmd
, "COMMAND FAILED (%x %x %x).\n",
291 cp
->host_status
, cp
->ssss_status
,
295 * Set the most appropriate value for CAM status.
297 cam_status
= sym_xerr_cam_status(DID_ERROR
, cp
->xerr_status
);
299 scsi_set_resid(cmd
, resid
);
300 cmd
->result
= (drv_status
<< 24) + (cam_status
<< 16) + scsi_status
;
303 static int sym_scatter(struct sym_hcb
*np
, struct sym_ccb
*cp
, struct scsi_cmnd
*cmd
)
310 use_sg
= map_scsi_sg_data(np
, cmd
);
312 struct scatterlist
*sg
;
313 struct sym_tcb
*tp
= &np
->target
[cp
->target
];
314 struct sym_tblmove
*data
;
316 if (use_sg
> SYM_CONF_MAX_SG
) {
317 unmap_scsi_data(np
, cmd
);
321 data
= &cp
->phys
.data
[SYM_CONF_MAX_SG
- use_sg
];
323 scsi_for_each_sg(cmd
, sg
, use_sg
, segment
) {
324 dma_addr_t baddr
= sg_dma_address(sg
);
325 unsigned int len
= sg_dma_len(sg
);
327 if ((len
& 1) && (tp
->head
.wval
& EWS
)) {
329 cp
->odd_byte_adjustment
++;
332 sym_build_sge(np
, &data
[segment
], baddr
, len
);
343 * Queue a SCSI command.
345 static int sym_queue_command(struct sym_hcb
*np
, struct scsi_cmnd
*cmd
)
347 struct scsi_device
*sdev
= cmd
->device
;
354 * Minimal checkings, so that we will not
355 * go outside our tables.
357 if (sdev
->id
== np
->myaddr
) {
358 sym_xpt_done2(np
, cmd
, DID_NO_CONNECT
);
363 * Retrieve the target descriptor.
365 tp
= &np
->target
[sdev
->id
];
368 * Select tagged/untagged.
370 lp
= sym_lp(tp
, sdev
->lun
);
371 order
= (lp
&& lp
->s
.reqtags
) ? M_SIMPLE_TAG
: 0;
376 cp
= sym_get_ccb(np
, cmd
, order
);
378 return 1; /* Means resource shortage */
379 sym_queue_scsiio(np
, cmd
, cp
);
384 * Setup buffers and pointers that address the CDB.
386 static inline int sym_setup_cdb(struct sym_hcb
*np
, struct scsi_cmnd
*cmd
, struct sym_ccb
*cp
)
388 memcpy(cp
->cdb_buf
, cmd
->cmnd
, cmd
->cmd_len
);
390 cp
->phys
.cmd
.addr
= CCB_BA(cp
, cdb_buf
[0]);
391 cp
->phys
.cmd
.size
= cpu_to_scr(cmd
->cmd_len
);
397 * Setup pointers that address the data and start the I/O.
399 int sym_setup_data_and_start(struct sym_hcb
*np
, struct scsi_cmnd
*cmd
, struct sym_ccb
*cp
)
407 if (sym_setup_cdb(np
, cmd
, cp
))
411 * No direction means no data.
413 dir
= cmd
->sc_data_direction
;
414 if (dir
!= DMA_NONE
) {
415 cp
->segments
= sym_scatter(np
, cp
, cmd
);
416 if (cp
->segments
< 0) {
417 sym_set_cam_status(cmd
, DID_ERROR
);
422 * No segments means no data.
432 * Set the data pointer.
435 case DMA_BIDIRECTIONAL
:
436 printk("%s: got DMA_BIDIRECTIONAL command", sym_name(np
));
437 sym_set_cam_status(cmd
, DID_ERROR
);
440 goalp
= SCRIPTA_BA(np
, data_out2
) + 8;
441 lastp
= goalp
- 8 - (cp
->segments
* (2*4));
443 case DMA_FROM_DEVICE
:
444 cp
->host_flags
|= HF_DATA_IN
;
445 goalp
= SCRIPTA_BA(np
, data_in2
) + 8;
446 lastp
= goalp
- 8 - (cp
->segments
* (2*4));
450 lastp
= goalp
= SCRIPTB_BA(np
, no_data
);
455 * Set all pointers values needed by SCRIPTS.
457 cp
->phys
.head
.lastp
= cpu_to_scr(lastp
);
458 cp
->phys
.head
.savep
= cpu_to_scr(lastp
);
459 cp
->startp
= cp
->phys
.head
.savep
;
460 cp
->goalp
= cpu_to_scr(goalp
);
463 * When `#ifed 1', the code below makes the driver
464 * panic on the first attempt to write to a SCSI device.
465 * It is the first test we want to do after a driver
466 * change that does not seem obviously safe. :)
469 switch (cp
->cdb_buf
[0]) {
470 case 0x0A: case 0x2A: case 0xAA:
471 panic("XXXXXXXXXXXXX WRITE NOT YET ALLOWED XXXXXXXXXXXXXX\n");
481 sym_put_start_queue(np
, cp
);
485 sym_free_ccb(np
, cp
);
486 sym_xpt_done(np
, cmd
);
494 * Misused to keep the driver running when
495 * interrupts are not configured correctly.
497 static void sym_timer(struct sym_hcb
*np
)
499 unsigned long thistime
= jiffies
;
504 np
->s
.timer
.expires
= thistime
+ SYM_CONF_TIMER_INTERVAL
;
505 add_timer(&np
->s
.timer
);
508 * If we are resetting the ncr, wait for settle_time before
509 * clearing it. Then command processing will be resumed.
511 if (np
->s
.settle_time_valid
) {
512 if (time_before_eq(np
->s
.settle_time
, thistime
)) {
513 if (sym_verbose
>= 2 )
514 printk("%s: command processing resumed\n",
516 np
->s
.settle_time_valid
= 0;
522 * Nothing to do for now, but that may come.
524 if (np
->s
.lasttime
+ 4*HZ
< thistime
) {
525 np
->s
.lasttime
= thistime
;
528 #ifdef SYM_CONF_PCIQ_MAY_MISS_COMPLETIONS
530 * Some way-broken PCI bridges may lead to
531 * completions being lost when the clearing
532 * of the INTFLY flag by the CPU occurs
533 * concurrently with the chip raising this flag.
534 * If this ever happen, lost completions will
543 * PCI BUS error handler.
545 void sym_log_bus_error(struct sym_hcb
*np
)
548 pci_read_config_word(np
->s
.device
, PCI_STATUS
, &pci_sts
);
549 if (pci_sts
& 0xf900) {
550 pci_write_config_word(np
->s
.device
, PCI_STATUS
, pci_sts
);
551 printf("%s: PCI STATUS = 0x%04x\n",
552 sym_name(np
), pci_sts
& 0xf900);
557 * queuecommand method. Entered with the host adapter lock held and
558 * interrupts disabled.
560 static int sym53c8xx_queue_command(struct scsi_cmnd
*cmd
,
561 void (*done
)(struct scsi_cmnd
*))
563 struct sym_hcb
*np
= SYM_SOFTC_PTR(cmd
);
564 struct sym_ucmd
*ucp
= SYM_UCMD_PTR(cmd
);
567 cmd
->scsi_done
= done
;
568 memset(ucp
, 0, sizeof(*ucp
));
571 * Shorten our settle_time if needed for
572 * this command not to time out.
574 if (np
->s
.settle_time_valid
&& cmd
->timeout_per_command
) {
575 unsigned long tlimit
= jiffies
+ cmd
->timeout_per_command
;
576 tlimit
-= SYM_CONF_TIMER_INTERVAL
*2;
577 if (time_after(np
->s
.settle_time
, tlimit
)) {
578 np
->s
.settle_time
= tlimit
;
582 if (np
->s
.settle_time_valid
)
583 return SCSI_MLQUEUE_HOST_BUSY
;
585 sts
= sym_queue_command(np
, cmd
);
587 return SCSI_MLQUEUE_HOST_BUSY
;
592 * Linux entry point of the interrupt handler.
594 static irqreturn_t
sym53c8xx_intr(int irq
, void *dev_id
)
597 struct sym_hcb
*np
= (struct sym_hcb
*)dev_id
;
599 if (DEBUG_FLAGS
& DEBUG_TINY
) printf_debug ("[");
601 spin_lock_irqsave(np
->s
.host
->host_lock
, flags
);
603 spin_unlock_irqrestore(np
->s
.host
->host_lock
, flags
);
605 if (DEBUG_FLAGS
& DEBUG_TINY
) printf_debug ("]\n");
611 * Linux entry point of the timer handler
613 static void sym53c8xx_timer(unsigned long npref
)
615 struct sym_hcb
*np
= (struct sym_hcb
*)npref
;
618 spin_lock_irqsave(np
->s
.host
->host_lock
, flags
);
620 spin_unlock_irqrestore(np
->s
.host
->host_lock
, flags
);
625 * What the eh thread wants us to perform.
627 #define SYM_EH_ABORT 0
628 #define SYM_EH_DEVICE_RESET 1
629 #define SYM_EH_BUS_RESET 2
630 #define SYM_EH_HOST_RESET 3
633 * What we will do regarding the involved SCSI command.
635 #define SYM_EH_DO_IGNORE 0
636 #define SYM_EH_DO_WAIT 2
639 * scsi_done() alias when error recovery is in progress.
641 static void sym_eh_done(struct scsi_cmnd
*cmd
)
643 struct sym_ucmd
*ucmd
= SYM_UCMD_PTR(cmd
);
644 BUILD_BUG_ON(sizeof(struct scsi_pointer
) < sizeof(struct sym_ucmd
));
646 cmd
->scsi_done
= ucmd
->old_done
;
648 if (ucmd
->to_do
== SYM_EH_DO_WAIT
)
649 complete(ucmd
->eh_done
);
653 * Generic method for our eh processing.
654 * The 'op' argument tells what we have to do.
656 static int sym_eh_handler(int op
, char *opname
, struct scsi_cmnd
*cmd
)
658 struct sym_hcb
*np
= SYM_SOFTC_PTR(cmd
);
659 struct sym_ucmd
*ucmd
= SYM_UCMD_PTR(cmd
);
660 struct Scsi_Host
*host
= cmd
->device
->host
;
662 int to_do
= SYM_EH_DO_IGNORE
;
664 struct completion eh_done
;
666 dev_warn(&cmd
->device
->sdev_gendev
, "%s operation started.\n", opname
);
668 spin_lock_irq(host
->host_lock
);
669 /* This one is queued in some place -> to wait for completion */
670 FOR_EACH_QUEUED_ELEMENT(&np
->busy_ccbq
, qp
) {
671 struct sym_ccb
*cp
= sym_que_entry(qp
, struct sym_ccb
, link_ccbq
);
672 if (cp
->cmd
== cmd
) {
673 to_do
= SYM_EH_DO_WAIT
;
678 if (to_do
== SYM_EH_DO_WAIT
) {
679 init_completion(&eh_done
);
680 ucmd
->old_done
= cmd
->scsi_done
;
681 ucmd
->eh_done
= &eh_done
;
683 cmd
->scsi_done
= sym_eh_done
;
686 /* Try to proceed the operation we have been asked for */
690 sts
= sym_abort_scsiio(np
, cmd
, 1);
692 case SYM_EH_DEVICE_RESET
:
693 sts
= sym_reset_scsi_target(np
, cmd
->device
->id
);
695 case SYM_EH_BUS_RESET
:
696 sym_reset_scsi_bus(np
, 1);
699 case SYM_EH_HOST_RESET
:
700 sym_reset_scsi_bus(np
, 0);
701 sym_start_up (np
, 1);
708 /* On error, restore everything and cross fingers :) */
710 cmd
->scsi_done
= ucmd
->old_done
;
711 to_do
= SYM_EH_DO_IGNORE
;
715 spin_unlock_irq(host
->host_lock
);
717 if (to_do
== SYM_EH_DO_WAIT
) {
718 if (!wait_for_completion_timeout(&eh_done
, 5*HZ
)) {
719 ucmd
->to_do
= SYM_EH_DO_IGNORE
;
724 dev_warn(&cmd
->device
->sdev_gendev
, "%s operation %s.\n", opname
,
725 sts
==0 ? "complete" :sts
==-2 ? "timed-out" : "failed");
726 return sts
? SCSI_FAILED
: SCSI_SUCCESS
;
731 * Error handlers called from the eh thread (one thread per HBA).
733 static int sym53c8xx_eh_abort_handler(struct scsi_cmnd
*cmd
)
735 return sym_eh_handler(SYM_EH_ABORT
, "ABORT", cmd
);
738 static int sym53c8xx_eh_device_reset_handler(struct scsi_cmnd
*cmd
)
740 return sym_eh_handler(SYM_EH_DEVICE_RESET
, "DEVICE RESET", cmd
);
743 static int sym53c8xx_eh_bus_reset_handler(struct scsi_cmnd
*cmd
)
745 return sym_eh_handler(SYM_EH_BUS_RESET
, "BUS RESET", cmd
);
748 static int sym53c8xx_eh_host_reset_handler(struct scsi_cmnd
*cmd
)
750 return sym_eh_handler(SYM_EH_HOST_RESET
, "HOST RESET", cmd
);
754 * Tune device queuing depth, according to various limits.
756 static void sym_tune_dev_queuing(struct sym_tcb
*tp
, int lun
, u_short reqtags
)
758 struct sym_lcb
*lp
= sym_lp(tp
, lun
);
764 oldtags
= lp
->s
.reqtags
;
766 if (reqtags
> lp
->s
.scdev_depth
)
767 reqtags
= lp
->s
.scdev_depth
;
769 lp
->s
.reqtags
= reqtags
;
771 if (reqtags
!= oldtags
) {
772 dev_info(&tp
->starget
->dev
,
773 "tagged command queuing %s, command queue depth %d.\n",
774 lp
->s
.reqtags
? "enabled" : "disabled", reqtags
);
779 * Linux select queue depths function
781 #define DEF_DEPTH (sym_driver_setup.max_tag)
782 #define ALL_TARGETS -2
787 static int device_queue_depth(struct sym_hcb
*np
, int target
, int lun
)
790 char *p
= sym_driver_setup
.tag_ctrl
;
796 while ((c
= *p
++) != 0) {
797 v
= simple_strtoul(p
, &ep
, 0);
806 t
= (target
== v
) ? v
: NO_TARGET
;
811 u
= (lun
== v
) ? v
: NO_LUN
;
814 if (h
== np
->s
.unit
&&
815 (t
== ALL_TARGETS
|| t
== target
) &&
816 (u
== ALL_LUNS
|| u
== lun
))
831 static int sym53c8xx_slave_alloc(struct scsi_device
*sdev
)
833 struct sym_hcb
*np
= sym_get_hcb(sdev
->host
);
834 struct sym_tcb
*tp
= &np
->target
[sdev
->id
];
837 if (sdev
->id
>= SYM_CONF_MAX_TARGET
|| sdev
->lun
>= SYM_CONF_MAX_LUN
)
840 tp
->starget
= sdev
->sdev_target
;
842 * Fail the device init if the device is flagged NOSCAN at BOOT in
843 * the NVRAM. This may speed up boot and maintain coherency with
844 * BIOS device numbering. Clearing the flag allows the user to
845 * rescan skipped devices later. We also return an error for
846 * devices not flagged for SCAN LUNS in the NVRAM since some single
847 * lun devices behave badly when asked for a non zero LUN.
850 if (tp
->usrflags
& SYM_SCAN_BOOT_DISABLED
) {
851 tp
->usrflags
&= ~SYM_SCAN_BOOT_DISABLED
;
852 starget_printk(KERN_INFO
, tp
->starget
,
853 "Scan at boot disabled in NVRAM\n");
857 if (tp
->usrflags
& SYM_SCAN_LUNS_DISABLED
) {
860 starget_printk(KERN_INFO
, tp
->starget
,
861 "Multiple LUNs disabled in NVRAM\n");
864 lp
= sym_alloc_lcb(np
, sdev
->id
, sdev
->lun
);
868 spi_min_period(tp
->starget
) = tp
->usr_period
;
869 spi_max_width(tp
->starget
) = tp
->usr_width
;
875 * Linux entry point for device queue sizing.
877 static int sym53c8xx_slave_configure(struct scsi_device
*sdev
)
879 struct sym_hcb
*np
= sym_get_hcb(sdev
->host
);
880 struct sym_tcb
*tp
= &np
->target
[sdev
->id
];
881 struct sym_lcb
*lp
= sym_lp(tp
, sdev
->lun
);
882 int reqtags
, depth_to_use
;
887 lp
->curr_flags
= lp
->user_flags
;
890 * Select queue depth from driver setup.
891 * Donnot use more than configured by user.
893 * Donnot use more than our maximum.
895 reqtags
= device_queue_depth(np
, sdev
->id
, sdev
->lun
);
896 if (reqtags
> tp
->usrtags
)
897 reqtags
= tp
->usrtags
;
898 if (!sdev
->tagged_supported
)
900 #if 1 /* Avoid to locally queue commands for no good reasons */
901 if (reqtags
> SYM_CONF_MAX_TAG
)
902 reqtags
= SYM_CONF_MAX_TAG
;
903 depth_to_use
= (reqtags
? reqtags
: 2);
905 depth_to_use
= (reqtags
? SYM_CONF_MAX_TAG
: 2);
907 scsi_adjust_queue_depth(sdev
,
908 (sdev
->tagged_supported
?
911 lp
->s
.scdev_depth
= depth_to_use
;
912 sym_tune_dev_queuing(tp
, sdev
->lun
, reqtags
);
914 if (!spi_initial_dv(sdev
->sdev_target
))
920 static void sym53c8xx_slave_destroy(struct scsi_device
*sdev
)
922 struct sym_hcb
*np
= sym_get_hcb(sdev
->host
);
923 struct sym_lcb
*lp
= sym_lp(&np
->target
[sdev
->id
], sdev
->lun
);
926 sym_mfree_dma(lp
->itlq_tbl
, SYM_CONF_MAX_TASK
* 4, "ITLQ_TBL");
928 sym_mfree_dma(lp
, sizeof(*lp
), "LCB");
932 * Linux entry point for info() function
934 static const char *sym53c8xx_info (struct Scsi_Host
*host
)
936 return SYM_DRIVER_NAME
;
940 #ifdef SYM_LINUX_PROC_INFO_SUPPORT
942 * Proc file system stuff
944 * A read operation returns adapter information.
945 * A write operation is a control command.
946 * The string is parsed in the driver code and the command is passed
947 * to the sym_usercmd() function.
950 #ifdef SYM_LINUX_USER_COMMAND_SUPPORT
959 #define UC_SETSYNC 10
960 #define UC_SETTAGS 11
961 #define UC_SETDEBUG 12
962 #define UC_SETWIDE 14
963 #define UC_SETFLAG 15
964 #define UC_SETVERBOSE 17
965 #define UC_RESETDEV 18
966 #define UC_CLEARDEV 19
968 static void sym_exec_user_command (struct sym_hcb
*np
, struct sym_usrcmd
*uc
)
976 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT
978 sym_debug_flags
= uc
->data
;
982 np
->verbose
= uc
->data
;
986 * We assume that other commands apply to targets.
987 * This should always be the case and avoid the below
988 * 4 lines to be repeated 6 times.
990 for (t
= 0; t
< SYM_CONF_MAX_TARGET
; t
++) {
991 if (!((uc
->target
>> t
) & 1))
998 if (!uc
->data
|| uc
->data
>= 255) {
999 tp
->tgoal
.iu
= tp
->tgoal
.dt
=
1001 tp
->tgoal
.offset
= 0;
1002 } else if (uc
->data
<= 9 && np
->minsync_dt
) {
1003 if (uc
->data
< np
->minsync_dt
)
1004 uc
->data
= np
->minsync_dt
;
1005 tp
->tgoal
.iu
= tp
->tgoal
.dt
=
1007 tp
->tgoal
.width
= 1;
1008 tp
->tgoal
.period
= uc
->data
;
1009 tp
->tgoal
.offset
= np
->maxoffs_dt
;
1011 if (uc
->data
< np
->minsync
)
1012 uc
->data
= np
->minsync
;
1013 tp
->tgoal
.iu
= tp
->tgoal
.dt
=
1015 tp
->tgoal
.period
= uc
->data
;
1016 tp
->tgoal
.offset
= np
->maxoffs
;
1018 tp
->tgoal
.check_nego
= 1;
1021 tp
->tgoal
.width
= uc
->data
? 1 : 0;
1022 tp
->tgoal
.check_nego
= 1;
1025 for (l
= 0; l
< SYM_CONF_MAX_LUN
; l
++)
1026 sym_tune_dev_queuing(tp
, l
, uc
->data
);
1030 np
->istat_sem
= SEM
;
1031 OUTB(np
, nc_istat
, SIGP
|SEM
);
1034 for (l
= 0; l
< SYM_CONF_MAX_LUN
; l
++) {
1035 struct sym_lcb
*lp
= sym_lp(tp
, l
);
1036 if (lp
) lp
->to_clear
= 1;
1038 np
->istat_sem
= SEM
;
1039 OUTB(np
, nc_istat
, SIGP
|SEM
);
1042 tp
->usrflags
= uc
->data
;
1050 static int skip_spaces(char *ptr
, int len
)
1054 for (cnt
= len
; cnt
> 0 && (c
= *ptr
++) && isspace(c
); cnt
--);
1059 static int get_int_arg(char *ptr
, int len
, u_long
*pv
)
1063 *pv
= simple_strtoul(ptr
, &end
, 10);
1067 static int is_keyword(char *ptr
, int len
, char *verb
)
1069 int verb_len
= strlen(verb
);
1071 if (len
>= verb_len
&& !memcmp(verb
, ptr
, verb_len
))
1077 #define SKIP_SPACES(ptr, len) \
1078 if ((arg_len = skip_spaces(ptr, len)) < 1) \
1080 ptr += arg_len; len -= arg_len;
1082 #define GET_INT_ARG(ptr, len, v) \
1083 if (!(arg_len = get_int_arg(ptr, len, &(v)))) \
1085 ptr += arg_len; len -= arg_len;
1089 * Parse a control command
1092 static int sym_user_command(struct sym_hcb
*np
, char *buffer
, int length
)
1096 struct sym_usrcmd cmd
, *uc
= &cmd
;
1100 memset(uc
, 0, sizeof(*uc
));
1102 if (len
> 0 && ptr
[len
-1] == '\n')
1105 if ((arg_len
= is_keyword(ptr
, len
, "setsync")) != 0)
1106 uc
->cmd
= UC_SETSYNC
;
1107 else if ((arg_len
= is_keyword(ptr
, len
, "settags")) != 0)
1108 uc
->cmd
= UC_SETTAGS
;
1109 else if ((arg_len
= is_keyword(ptr
, len
, "setverbose")) != 0)
1110 uc
->cmd
= UC_SETVERBOSE
;
1111 else if ((arg_len
= is_keyword(ptr
, len
, "setwide")) != 0)
1112 uc
->cmd
= UC_SETWIDE
;
1113 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT
1114 else if ((arg_len
= is_keyword(ptr
, len
, "setdebug")) != 0)
1115 uc
->cmd
= UC_SETDEBUG
;
1117 else if ((arg_len
= is_keyword(ptr
, len
, "setflag")) != 0)
1118 uc
->cmd
= UC_SETFLAG
;
1119 else if ((arg_len
= is_keyword(ptr
, len
, "resetdev")) != 0)
1120 uc
->cmd
= UC_RESETDEV
;
1121 else if ((arg_len
= is_keyword(ptr
, len
, "cleardev")) != 0)
1122 uc
->cmd
= UC_CLEARDEV
;
1126 #ifdef DEBUG_PROC_INFO
1127 printk("sym_user_command: arg_len=%d, cmd=%ld\n", arg_len
, uc
->cmd
);
1132 ptr
+= arg_len
; len
-= arg_len
;
1141 SKIP_SPACES(ptr
, len
);
1142 if ((arg_len
= is_keyword(ptr
, len
, "all")) != 0) {
1143 ptr
+= arg_len
; len
-= arg_len
;
1146 GET_INT_ARG(ptr
, len
, target
);
1147 uc
->target
= (1<<target
);
1148 #ifdef DEBUG_PROC_INFO
1149 printk("sym_user_command: target=%ld\n", target
);
1160 SKIP_SPACES(ptr
, len
);
1161 GET_INT_ARG(ptr
, len
, uc
->data
);
1162 #ifdef DEBUG_PROC_INFO
1163 printk("sym_user_command: data=%ld\n", uc
->data
);
1166 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT
1169 SKIP_SPACES(ptr
, len
);
1170 if ((arg_len
= is_keyword(ptr
, len
, "alloc")))
1171 uc
->data
|= DEBUG_ALLOC
;
1172 else if ((arg_len
= is_keyword(ptr
, len
, "phase")))
1173 uc
->data
|= DEBUG_PHASE
;
1174 else if ((arg_len
= is_keyword(ptr
, len
, "queue")))
1175 uc
->data
|= DEBUG_QUEUE
;
1176 else if ((arg_len
= is_keyword(ptr
, len
, "result")))
1177 uc
->data
|= DEBUG_RESULT
;
1178 else if ((arg_len
= is_keyword(ptr
, len
, "scatter")))
1179 uc
->data
|= DEBUG_SCATTER
;
1180 else if ((arg_len
= is_keyword(ptr
, len
, "script")))
1181 uc
->data
|= DEBUG_SCRIPT
;
1182 else if ((arg_len
= is_keyword(ptr
, len
, "tiny")))
1183 uc
->data
|= DEBUG_TINY
;
1184 else if ((arg_len
= is_keyword(ptr
, len
, "timing")))
1185 uc
->data
|= DEBUG_TIMING
;
1186 else if ((arg_len
= is_keyword(ptr
, len
, "nego")))
1187 uc
->data
|= DEBUG_NEGO
;
1188 else if ((arg_len
= is_keyword(ptr
, len
, "tags")))
1189 uc
->data
|= DEBUG_TAGS
;
1190 else if ((arg_len
= is_keyword(ptr
, len
, "pointer")))
1191 uc
->data
|= DEBUG_POINTER
;
1194 ptr
+= arg_len
; len
-= arg_len
;
1196 #ifdef DEBUG_PROC_INFO
1197 printk("sym_user_command: data=%ld\n", uc
->data
);
1200 #endif /* SYM_LINUX_DEBUG_CONTROL_SUPPORT */
1203 SKIP_SPACES(ptr
, len
);
1204 if ((arg_len
= is_keyword(ptr
, len
, "no_disc")))
1205 uc
->data
&= ~SYM_DISC_ENABLED
;
1208 ptr
+= arg_len
; len
-= arg_len
;
1218 unsigned long flags
;
1220 spin_lock_irqsave(np
->s
.host
->host_lock
, flags
);
1221 sym_exec_user_command (np
, uc
);
1222 spin_unlock_irqrestore(np
->s
.host
->host_lock
, flags
);
1227 #endif /* SYM_LINUX_USER_COMMAND_SUPPORT */
1230 #ifdef SYM_LINUX_USER_INFO_SUPPORT
1232 * Informations through the proc file system.
1241 static void copy_mem_info(struct info_str
*info
, char *data
, int len
)
1243 if (info
->pos
+ len
> info
->length
)
1244 len
= info
->length
- info
->pos
;
1246 if (info
->pos
+ len
< info
->offset
) {
1250 if (info
->pos
< info
->offset
) {
1251 data
+= (info
->offset
- info
->pos
);
1252 len
-= (info
->offset
- info
->pos
);
1256 memcpy(info
->buffer
+ info
->pos
, data
, len
);
1261 static int copy_info(struct info_str
*info
, char *fmt
, ...)
1267 va_start(args
, fmt
);
1268 len
= vsprintf(buf
, fmt
, args
);
1271 copy_mem_info(info
, buf
, len
);
1276 * Copy formatted information into the input buffer.
1278 static int sym_host_info(struct sym_hcb
*np
, char *ptr
, off_t offset
, int len
)
1280 struct info_str info
;
1284 info
.offset
= offset
;
1287 copy_info(&info
, "Chip " NAME53C
"%s, device id 0x%x, "
1288 "revision id 0x%x\n",
1289 np
->s
.chip_name
, np
->device_id
, np
->revision_id
);
1290 copy_info(&info
, "At PCI address %s, IRQ " IRQ_FMT
"\n",
1291 pci_name(np
->s
.device
), IRQ_PRM(np
->s
.irq
));
1292 copy_info(&info
, "Min. period factor %d, %s SCSI BUS%s\n",
1293 (int) (np
->minsync_dt
? np
->minsync_dt
: np
->minsync
),
1294 np
->maxwide
? "Wide" : "Narrow",
1295 np
->minsync_dt
? ", DT capable" : "");
1297 copy_info(&info
, "Max. started commands %d, "
1298 "max. commands per LUN %d\n",
1299 SYM_CONF_MAX_START
, SYM_CONF_MAX_TAG
);
1301 return info
.pos
> info
.offset
? info
.pos
- info
.offset
: 0;
1303 #endif /* SYM_LINUX_USER_INFO_SUPPORT */
1306 * Entry point of the scsi proc fs of the driver.
1307 * - func = 0 means read (returns adapter infos)
1308 * - func = 1 means write (not yet merget from sym53c8xx)
1310 static int sym53c8xx_proc_info(struct Scsi_Host
*host
, char *buffer
,
1311 char **start
, off_t offset
, int length
, int func
)
1313 struct sym_hcb
*np
= sym_get_hcb(host
);
1317 #ifdef SYM_LINUX_USER_COMMAND_SUPPORT
1318 retv
= sym_user_command(np
, buffer
, length
);
1325 #ifdef SYM_LINUX_USER_INFO_SUPPORT
1326 retv
= sym_host_info(np
, buffer
, offset
, length
);
1334 #endif /* SYM_LINUX_PROC_INFO_SUPPORT */
1337 * Free controller resources.
1339 static void sym_free_resources(struct sym_hcb
*np
, struct pci_dev
*pdev
)
1342 * Free O/S specific resources.
1345 free_irq(np
->s
.irq
, np
);
1347 pci_iounmap(pdev
, np
->s
.ioaddr
);
1349 pci_iounmap(pdev
, np
->s
.ramaddr
);
1351 * Free O/S independent resources.
1355 sym_mfree_dma(np
, sizeof(*np
), "HCB");
1359 * Ask/tell the system about DMA addressing.
1361 static int sym_setup_bus_dma_mask(struct sym_hcb
*np
)
1363 #if SYM_CONF_DMA_ADDRESSING_MODE > 0
1364 #if SYM_CONF_DMA_ADDRESSING_MODE == 1
1365 #define DMA_DAC_MASK DMA_40BIT_MASK
1366 #elif SYM_CONF_DMA_ADDRESSING_MODE == 2
1367 #define DMA_DAC_MASK DMA_64BIT_MASK
1369 if ((np
->features
& FE_DAC
) &&
1370 !pci_set_dma_mask(np
->s
.device
, DMA_DAC_MASK
)) {
1376 if (!pci_set_dma_mask(np
->s
.device
, DMA_32BIT_MASK
))
1379 printf_warning("%s: No suitable DMA available\n", sym_name(np
));
1384 * Host attach and initialisations.
1386 * Allocate host data and ncb structure.
1387 * Remap MMIO region.
1388 * Do chip initialization.
1389 * If all is OK, install interrupt handling and
1390 * start the timer daemon.
1392 static struct Scsi_Host
* __devinit
sym_attach(struct scsi_host_template
*tpnt
,
1393 int unit
, struct sym_device
*dev
)
1395 struct host_data
*host_data
;
1396 struct sym_hcb
*np
= NULL
;
1397 struct Scsi_Host
*instance
= NULL
;
1398 struct pci_dev
*pdev
= dev
->pdev
;
1399 unsigned long flags
;
1403 "sym%d: <%s> rev 0x%x at pci %s irq " IRQ_FMT
"\n",
1404 unit
, dev
->chip
.name
, dev
->chip
.revision_id
,
1405 pci_name(pdev
), IRQ_PRM(pdev
->irq
));
1408 * Get the firmware for this chip.
1410 fw
= sym_find_firmware(&dev
->chip
);
1415 * Allocate host_data structure
1417 instance
= scsi_host_alloc(tpnt
, sizeof(*host_data
));
1420 host_data
= (struct host_data
*) instance
->hostdata
;
1423 * Allocate immediately the host control block,
1424 * since we are only expecting to succeed. :)
1425 * We keep track in the HCB of all the resources that
1426 * are to be released on error.
1428 np
= __sym_calloc_dma(&pdev
->dev
, sizeof(*np
), "HCB");
1431 np
->s
.device
= pdev
;
1432 np
->bus_dmat
= &pdev
->dev
; /* Result in 1 DMA pool per HBA */
1433 host_data
->ncb
= np
;
1434 np
->s
.host
= instance
;
1436 pci_set_drvdata(pdev
, np
);
1439 * Copy some useful infos to the HCB.
1441 np
->hcb_ba
= vtobus(np
);
1442 np
->verbose
= sym_driver_setup
.verbose
;
1443 np
->s
.device
= pdev
;
1445 np
->device_id
= dev
->chip
.device_id
;
1446 np
->revision_id
= dev
->chip
.revision_id
;
1447 np
->features
= dev
->chip
.features
;
1448 np
->clock_divn
= dev
->chip
.nr_divisor
;
1449 np
->maxoffs
= dev
->chip
.offset_max
;
1450 np
->maxburst
= dev
->chip
.burst_max
;
1451 np
->myaddr
= dev
->host_id
;
1456 strlcpy(np
->s
.chip_name
, dev
->chip
.name
, sizeof(np
->s
.chip_name
));
1457 sprintf(np
->s
.inst_name
, "sym%d", np
->s
.unit
);
1459 if (sym_setup_bus_dma_mask(np
))
1463 * Try to map the controller chip to
1464 * virtual and physical memory.
1466 np
->mmio_ba
= (u32
)dev
->mmio_base
;
1467 np
->s
.ioaddr
= dev
->s
.ioaddr
;
1468 np
->s
.ramaddr
= dev
->s
.ramaddr
;
1469 np
->s
.io_ws
= (np
->features
& FE_IO256
) ? 256 : 128;
1472 * Map on-chip RAM if present and supported.
1474 if (!(np
->features
& FE_RAM
))
1476 if (dev
->ram_base
) {
1477 np
->ram_ba
= (u32
)dev
->ram_base
;
1478 np
->ram_ws
= (np
->features
& FE_RAM8K
) ? 8192 : 4096;
1481 if (sym_hcb_attach(instance
, fw
, dev
->nvram
))
1485 * Install the interrupt handler.
1486 * If we synchonize the C code with SCRIPTS on interrupt,
1487 * we do not want to share the INTR line at all.
1489 if (request_irq(pdev
->irq
, sym53c8xx_intr
, IRQF_SHARED
, NAME53C8XX
, np
)) {
1490 printf_err("%s: request irq %d failure\n",
1491 sym_name(np
), pdev
->irq
);
1494 np
->s
.irq
= pdev
->irq
;
1497 * After SCSI devices have been opened, we cannot
1498 * reset the bus safely, so we do it here.
1500 spin_lock_irqsave(instance
->host_lock
, flags
);
1501 if (sym_reset_scsi_bus(np
, 0))
1505 * Start the SCRIPTS.
1507 sym_start_up (np
, 1);
1510 * Start the timer daemon
1512 init_timer(&np
->s
.timer
);
1513 np
->s
.timer
.data
= (unsigned long) np
;
1514 np
->s
.timer
.function
= sym53c8xx_timer
;
1519 * Fill Linux host instance structure
1520 * and return success.
1522 instance
->max_channel
= 0;
1523 instance
->this_id
= np
->myaddr
;
1524 instance
->max_id
= np
->maxwide
? 16 : 8;
1525 instance
->max_lun
= SYM_CONF_MAX_LUN
;
1526 instance
->unique_id
= pci_resource_start(pdev
, 0);
1527 instance
->cmd_per_lun
= SYM_CONF_MAX_TAG
;
1528 instance
->can_queue
= (SYM_CONF_MAX_START
-2);
1529 instance
->sg_tablesize
= SYM_CONF_MAX_SG
;
1530 instance
->max_cmd_len
= 16;
1531 BUG_ON(sym2_transport_template
== NULL
);
1532 instance
->transportt
= sym2_transport_template
;
1534 spin_unlock_irqrestore(instance
->host_lock
, flags
);
1539 printf_err("%s: FATAL ERROR: CHECK SCSI BUS - CABLES, "
1540 "TERMINATION, DEVICE POWER etc.!\n", sym_name(np
));
1541 spin_unlock_irqrestore(instance
->host_lock
, flags
);
1545 printf_info("%s: giving up ...\n", sym_name(np
));
1547 sym_free_resources(np
, pdev
);
1548 scsi_host_put(instance
);
1555 * Detect and try to read SYMBIOS and TEKRAM NVRAM.
1557 #if SYM_CONF_NVRAM_SUPPORT
1558 static void __devinit
sym_get_nvram(struct sym_device
*devp
, struct sym_nvram
*nvp
)
1561 devp
->device_id
= devp
->chip
.device_id
;
1564 sym_read_nvram(devp
, nvp
);
1567 static inline void sym_get_nvram(struct sym_device
*devp
, struct sym_nvram
*nvp
)
1570 #endif /* SYM_CONF_NVRAM_SUPPORT */
1572 static int __devinit
sym_check_supported(struct sym_device
*device
)
1574 struct sym_chip
*chip
;
1575 struct pci_dev
*pdev
= device
->pdev
;
1577 unsigned long io_port
= pci_resource_start(pdev
, 0);
1581 * If user excluded this chip, do not initialize it.
1582 * I hate this code so much. Must kill it.
1585 for (i
= 0 ; i
< 8 ; i
++) {
1586 if (sym_driver_setup
.excludes
[i
] == io_port
)
1592 * Check if the chip is supported. Then copy the chip description
1593 * to our device structure so we can make it match the actual device
1596 pci_read_config_byte(pdev
, PCI_CLASS_REVISION
, &revision
);
1597 chip
= sym_lookup_chip_table(pdev
->device
, revision
);
1599 dev_info(&pdev
->dev
, "device not supported\n");
1602 memcpy(&device
->chip
, chip
, sizeof(device
->chip
));
1603 device
->chip
.revision_id
= revision
;
1609 * Ignore Symbios chips controlled by various RAID controllers.
1610 * These controllers set value 0x52414944 at RAM end - 16.
1612 static int __devinit
sym_check_raid(struct sym_device
*device
)
1614 unsigned int ram_size
, ram_val
;
1616 if (!device
->s
.ramaddr
)
1619 if (device
->chip
.features
& FE_RAM8K
)
1624 ram_val
= readl(device
->s
.ramaddr
+ ram_size
- 16);
1625 if (ram_val
!= 0x52414944)
1628 dev_info(&device
->pdev
->dev
,
1629 "not initializing, driven by RAID controller.\n");
1633 static int __devinit
sym_set_workarounds(struct sym_device
*device
)
1635 struct sym_chip
*chip
= &device
->chip
;
1636 struct pci_dev
*pdev
= device
->pdev
;
1640 * (ITEM 12 of a DEL about the 896 I haven't yet).
1641 * We must ensure the chip will use WRITE AND INVALIDATE.
1642 * The revision number limit is for now arbitrary.
1644 if (pdev
->device
== PCI_DEVICE_ID_NCR_53C896
&& chip
->revision_id
< 0x4) {
1645 chip
->features
|= (FE_WRIE
| FE_CLSE
);
1648 /* If the chip can do Memory Write Invalidate, enable it */
1649 if (chip
->features
& FE_WRIE
) {
1650 if (pci_set_mwi(pdev
))
1655 * Work around for errant bit in 895A. The 66Mhz
1656 * capable bit is set erroneously. Clear this bit.
1659 * Make sure Config space and Features agree.
1661 * Recall: writes are not normal to status register -
1662 * write a 1 to clear and a 0 to leave unchanged.
1663 * Can only reset bits.
1665 pci_read_config_word(pdev
, PCI_STATUS
, &status_reg
);
1666 if (chip
->features
& FE_66MHZ
) {
1667 if (!(status_reg
& PCI_STATUS_66MHZ
))
1668 chip
->features
&= ~FE_66MHZ
;
1670 if (status_reg
& PCI_STATUS_66MHZ
) {
1671 status_reg
= PCI_STATUS_66MHZ
;
1672 pci_write_config_word(pdev
, PCI_STATUS
, status_reg
);
1673 pci_read_config_word(pdev
, PCI_STATUS
, &status_reg
);
1681 * Read and check the PCI configuration for any detected NCR
1682 * boards and save data for attaching after all boards have
1685 static void __devinit
1686 sym_init_device(struct pci_dev
*pdev
, struct sym_device
*device
)
1689 struct pci_bus_region bus_addr
;
1691 device
->host_id
= SYM_SETUP_HOST_ID
;
1692 device
->pdev
= pdev
;
1694 pcibios_resource_to_bus(pdev
, &bus_addr
, &pdev
->resource
[1]);
1695 device
->mmio_base
= bus_addr
.start
;
1698 * If the BAR is 64-bit, resource 2 will be occupied by the
1701 if (!pdev
->resource
[i
].flags
)
1703 pcibios_resource_to_bus(pdev
, &bus_addr
, &pdev
->resource
[i
]);
1704 device
->ram_base
= bus_addr
.start
;
1706 #ifdef CONFIG_SCSI_SYM53C8XX_MMIO
1707 if (device
->mmio_base
)
1708 device
->s
.ioaddr
= pci_iomap(pdev
, 1,
1709 pci_resource_len(pdev
, 1));
1711 if (!device
->s
.ioaddr
)
1712 device
->s
.ioaddr
= pci_iomap(pdev
, 0,
1713 pci_resource_len(pdev
, 0));
1714 if (device
->ram_base
)
1715 device
->s
.ramaddr
= pci_iomap(pdev
, i
,
1716 pci_resource_len(pdev
, i
));
1720 * The NCR PQS and PDS cards are constructed as a DEC bridge
1721 * behind which sits a proprietary NCR memory controller and
1722 * either four or two 53c875s as separate devices. We can tell
1723 * if an 875 is part of a PQS/PDS or not since if it is, it will
1724 * be on the same bus as the memory controller. In its usual
1725 * mode of operation, the 875s are slaved to the memory
1726 * controller for all transfers. To operate with the Linux
1727 * driver, the memory controller is disabled and the 875s
1728 * freed to function independently. The only wrinkle is that
1729 * the preset SCSI ID (which may be zero) must be read in from
1730 * a special configuration space register of the 875.
1732 static void sym_config_pqs(struct pci_dev
*pdev
, struct sym_device
*sym_dev
)
1737 for (slot
= 0; slot
< 256; slot
++) {
1738 struct pci_dev
*memc
= pci_get_slot(pdev
->bus
, slot
);
1740 if (!memc
|| memc
->vendor
!= 0x101a || memc
->device
== 0x0009) {
1745 /* bit 1: allow individual 875 configuration */
1746 pci_read_config_byte(memc
, 0x44, &tmp
);
1747 if ((tmp
& 0x2) == 0) {
1749 pci_write_config_byte(memc
, 0x44, tmp
);
1752 /* bit 2: drive individual 875 interrupts to the bus */
1753 pci_read_config_byte(memc
, 0x45, &tmp
);
1754 if ((tmp
& 0x4) == 0) {
1756 pci_write_config_byte(memc
, 0x45, tmp
);
1763 pci_read_config_byte(pdev
, 0x84, &tmp
);
1764 sym_dev
->host_id
= tmp
;
1768 * Called before unloading the module.
1770 * We have to free resources and halt the NCR chip.
1772 static int sym_detach(struct sym_hcb
*np
, struct pci_dev
*pdev
)
1774 printk("%s: detaching ...\n", sym_name(np
));
1776 del_timer_sync(&np
->s
.timer
);
1780 * We should use sym_soft_reset(), but we don't want to do
1781 * so, since we may not be safe if interrupts occur.
1783 printk("%s: resetting chip\n", sym_name(np
));
1784 OUTB(np
, nc_istat
, SRST
);
1787 OUTB(np
, nc_istat
, 0);
1789 sym_free_resources(np
, pdev
);
1795 * Driver host template.
1797 static struct scsi_host_template sym2_template
= {
1798 .module
= THIS_MODULE
,
1799 .name
= "sym53c8xx",
1800 .info
= sym53c8xx_info
,
1801 .queuecommand
= sym53c8xx_queue_command
,
1802 .slave_alloc
= sym53c8xx_slave_alloc
,
1803 .slave_configure
= sym53c8xx_slave_configure
,
1804 .slave_destroy
= sym53c8xx_slave_destroy
,
1805 .eh_abort_handler
= sym53c8xx_eh_abort_handler
,
1806 .eh_device_reset_handler
= sym53c8xx_eh_device_reset_handler
,
1807 .eh_bus_reset_handler
= sym53c8xx_eh_bus_reset_handler
,
1808 .eh_host_reset_handler
= sym53c8xx_eh_host_reset_handler
,
1810 .use_clustering
= ENABLE_CLUSTERING
,
1811 .use_sg_chaining
= ENABLE_SG_CHAINING
,
1812 .max_sectors
= 0xFFFF,
1813 #ifdef SYM_LINUX_PROC_INFO_SUPPORT
1814 .proc_info
= sym53c8xx_proc_info
,
1815 .proc_name
= NAME53C8XX
,
1819 static int attach_count
;
1821 static int __devinit
sym2_probe(struct pci_dev
*pdev
,
1822 const struct pci_device_id
*ent
)
1824 struct sym_device sym_dev
;
1825 struct sym_nvram nvram
;
1826 struct Scsi_Host
*instance
;
1828 memset(&sym_dev
, 0, sizeof(sym_dev
));
1829 memset(&nvram
, 0, sizeof(nvram
));
1831 if (pci_enable_device(pdev
))
1834 pci_set_master(pdev
);
1836 if (pci_request_regions(pdev
, NAME53C8XX
))
1839 sym_init_device(pdev
, &sym_dev
);
1840 if (sym_check_supported(&sym_dev
))
1843 if (sym_check_raid(&sym_dev
))
1844 goto leave
; /* Don't disable the device */
1846 if (sym_set_workarounds(&sym_dev
))
1849 sym_config_pqs(pdev
, &sym_dev
);
1851 sym_get_nvram(&sym_dev
, &nvram
);
1853 instance
= sym_attach(&sym2_template
, attach_count
, &sym_dev
);
1857 if (scsi_add_host(instance
, &pdev
->dev
))
1859 scsi_scan_host(instance
);
1866 sym_detach(pci_get_drvdata(pdev
), pdev
);
1868 pci_release_regions(pdev
);
1870 pci_disable_device(pdev
);
1875 static void __devexit
sym2_remove(struct pci_dev
*pdev
)
1877 struct sym_hcb
*np
= pci_get_drvdata(pdev
);
1878 struct Scsi_Host
*host
= np
->s
.host
;
1880 scsi_remove_host(host
);
1881 scsi_host_put(host
);
1883 sym_detach(np
, pdev
);
1885 pci_release_regions(pdev
);
1886 pci_disable_device(pdev
);
1891 static void sym2_get_signalling(struct Scsi_Host
*shost
)
1893 struct sym_hcb
*np
= sym_get_hcb(shost
);
1894 enum spi_signal_type type
;
1896 switch (np
->scsi_mode
) {
1898 type
= SPI_SIGNAL_SE
;
1901 type
= SPI_SIGNAL_LVD
;
1904 type
= SPI_SIGNAL_HVD
;
1907 type
= SPI_SIGNAL_UNKNOWN
;
1910 spi_signalling(shost
) = type
;
1913 static void sym2_set_offset(struct scsi_target
*starget
, int offset
)
1915 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
1916 struct sym_hcb
*np
= sym_get_hcb(shost
);
1917 struct sym_tcb
*tp
= &np
->target
[starget
->id
];
1919 tp
->tgoal
.offset
= offset
;
1920 tp
->tgoal
.check_nego
= 1;
1923 static void sym2_set_period(struct scsi_target
*starget
, int period
)
1925 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
1926 struct sym_hcb
*np
= sym_get_hcb(shost
);
1927 struct sym_tcb
*tp
= &np
->target
[starget
->id
];
1929 /* have to have DT for these transfers, but DT will also
1930 * set width, so check that this is allowed */
1931 if (period
<= np
->minsync
&& spi_width(starget
))
1934 tp
->tgoal
.period
= period
;
1935 tp
->tgoal
.check_nego
= 1;
1938 static void sym2_set_width(struct scsi_target
*starget
, int width
)
1940 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
1941 struct sym_hcb
*np
= sym_get_hcb(shost
);
1942 struct sym_tcb
*tp
= &np
->target
[starget
->id
];
1944 /* It is illegal to have DT set on narrow transfers. If DT is
1945 * clear, we must also clear IU and QAS. */
1947 tp
->tgoal
.iu
= tp
->tgoal
.dt
= tp
->tgoal
.qas
= 0;
1949 tp
->tgoal
.width
= width
;
1950 tp
->tgoal
.check_nego
= 1;
1953 static void sym2_set_dt(struct scsi_target
*starget
, int dt
)
1955 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
1956 struct sym_hcb
*np
= sym_get_hcb(shost
);
1957 struct sym_tcb
*tp
= &np
->target
[starget
->id
];
1959 /* We must clear QAS and IU if DT is clear */
1963 tp
->tgoal
.iu
= tp
->tgoal
.dt
= tp
->tgoal
.qas
= 0;
1964 tp
->tgoal
.check_nego
= 1;
1968 static void sym2_set_iu(struct scsi_target
*starget
, int iu
)
1970 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
1971 struct sym_hcb
*np
= sym_get_hcb(shost
);
1972 struct sym_tcb
*tp
= &np
->target
[starget
->id
];
1975 tp
->tgoal
.iu
= tp
->tgoal
.dt
= 1;
1978 tp
->tgoal
.check_nego
= 1;
1981 static void sym2_set_qas(struct scsi_target
*starget
, int qas
)
1983 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
1984 struct sym_hcb
*np
= sym_get_hcb(shost
);
1985 struct sym_tcb
*tp
= &np
->target
[starget
->id
];
1988 tp
->tgoal
.dt
= tp
->tgoal
.qas
= 1;
1991 tp
->tgoal
.check_nego
= 1;
1995 static struct spi_function_template sym2_transport_functions
= {
1996 .set_offset
= sym2_set_offset
,
1998 .set_period
= sym2_set_period
,
2000 .set_width
= sym2_set_width
,
2002 .set_dt
= sym2_set_dt
,
2005 .set_iu
= sym2_set_iu
,
2007 .set_qas
= sym2_set_qas
,
2010 .get_signalling
= sym2_get_signalling
,
2013 static struct pci_device_id sym2_id_table
[] __devinitdata
= {
2014 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C810
,
2015 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2016 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C820
,
2017 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL }, /* new */
2018 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C825
,
2019 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2020 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C815
,
2021 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2022 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_LSI_53C810AP
,
2023 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL }, /* new */
2024 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C860
,
2025 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2026 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_LSI_53C1510
,
2027 PCI_ANY_ID
, PCI_ANY_ID
, PCI_CLASS_STORAGE_SCSI
<<8, 0xffff00, 0UL },
2028 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C896
,
2029 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2030 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C895
,
2031 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2032 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C885
,
2033 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2034 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C875
,
2035 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2036 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C1510
,
2037 PCI_ANY_ID
, PCI_ANY_ID
, PCI_CLASS_STORAGE_SCSI
<<8, 0xffff00, 0UL }, /* new */
2038 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_LSI_53C895A
,
2039 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2040 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_LSI_53C875A
,
2041 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2042 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_LSI_53C1010_33
,
2043 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2044 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_LSI_53C1010_66
,
2045 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2046 { PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_NCR_53C875J
,
2047 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0UL },
2051 MODULE_DEVICE_TABLE(pci
, sym2_id_table
);
2053 static struct pci_driver sym2_driver
= {
2055 .id_table
= sym2_id_table
,
2056 .probe
= sym2_probe
,
2057 .remove
= __devexit_p(sym2_remove
),
2060 static int __init
sym2_init(void)
2064 sym2_setup_params();
2065 sym2_transport_template
= spi_attach_transport(&sym2_transport_functions
);
2066 if (!sym2_transport_template
)
2069 error
= pci_register_driver(&sym2_driver
);
2071 spi_release_transport(sym2_transport_template
);
2075 static void __exit
sym2_exit(void)
2077 pci_unregister_driver(&sym2_driver
);
2078 spi_release_transport(sym2_transport_template
);
2081 module_init(sym2_init
);
2082 module_exit(sym2_exit
);