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>
7
* This driver is derived from the Linux sym53c8xx driver.
8
* Copyright (C) 1998-2000 Gerard Roudier
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* The sym53c8xx driver is derived from the ncr53c8xx driver that had been
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* a port of the FreeBSD ncr driver to Linux-1.2.13.
13
* The original ncr driver has been written for 386bsd and FreeBSD by
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* Wolfgang Stanglmeier <wolf@cologne.de>
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* Stefan Esser <se@mi.Uni-Koeln.de>
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* Copyright (C) 1994 Wolfgang Stanglmeier
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* Other major contributions:
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* NVRAM detection and reading.
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* Copyright (C) 1997 Richard Waltham <dormouse@farsrobt.demon.co.uk>
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*-----------------------------------------------------------------------------
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
32
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
33
* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
36
* along with this program; if not, write to the Free Software
37
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
41
#include "sym_nvram.h"
43
#ifdef SYM_CONF_DEBUG_NVRAM
44
static u_char Tekram_boot_delay[7] = {3, 5, 10, 20, 30, 60, 120};
48
* Get host setup from NVRAM.
50
void sym_nvram_setup_host(struct Scsi_Host *shost, struct sym_hcb *np, struct sym_nvram *nvram)
53
* Get parity checking, host ID, verbose mode
54
* and miscellaneous host flags from NVRAM.
56
switch (nvram->type) {
57
case SYM_SYMBIOS_NVRAM:
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if (!(nvram->data.Symbios.flags & SYMBIOS_PARITY_ENABLE))
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np->rv_scntl0 &= ~0x0a;
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np->myaddr = nvram->data.Symbios.host_id & 0x0f;
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if (nvram->data.Symbios.flags & SYMBIOS_VERBOSE_MSGS)
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if (nvram->data.Symbios.flags1 & SYMBIOS_SCAN_HI_LO)
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shost->reverse_ordering = 1;
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if (nvram->data.Symbios.flags2 & SYMBIOS_AVOID_BUS_RESET)
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np->usrflags |= SYM_AVOID_BUS_RESET;
68
case SYM_TEKRAM_NVRAM:
69
np->myaddr = nvram->data.Tekram.host_id & 0x0f;
73
if (nvram->data.parisc.host_id != -1)
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np->myaddr = nvram->data.parisc.host_id;
75
if (nvram->data.parisc.factor != -1)
76
np->minsync = nvram->data.parisc.factor;
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if (nvram->data.parisc.width != -1)
78
np->maxwide = nvram->data.parisc.width;
79
switch (nvram->data.parisc.mode) {
80
case 0: np->scsi_mode = SMODE_SE; break;
81
case 1: np->scsi_mode = SMODE_HVD; break;
82
case 2: np->scsi_mode = SMODE_LVD; break;
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* Get target set-up from Symbios format NVRAM.
95
sym_Symbios_setup_target(struct sym_tcb *tp, int target, Symbios_nvram *nvram)
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Symbios_target *tn = &nvram->target[target];
99
if (!(tn->flags & SYMBIOS_QUEUE_TAGS_ENABLED))
101
if (!(tn->flags & SYMBIOS_DISCONNECT_ENABLE))
102
tp->usrflags &= ~SYM_DISC_ENABLED;
103
if (!(tn->flags & SYMBIOS_SCAN_AT_BOOT_TIME))
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tp->usrflags |= SYM_SCAN_BOOT_DISABLED;
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if (!(tn->flags & SYMBIOS_SCAN_LUNS))
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tp->usrflags |= SYM_SCAN_LUNS_DISABLED;
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tp->usr_period = (tn->sync_period + 3) / 4;
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tp->usr_width = (tn->bus_width == 0x8) ? 0 : 1;
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static const unsigned char Tekram_sync[16] = {
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25, 31, 37, 43, 50, 62, 75, 125, 12, 15, 18, 21, 6, 7, 9, 10
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* Get target set-up from Tekram format NVRAM.
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sym_Tekram_setup_target(struct sym_tcb *tp, int target, Tekram_nvram *nvram)
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struct Tekram_target *tn = &nvram->target[target];
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if (tn->flags & TEKRAM_TAGGED_COMMANDS) {
124
tp->usrtags = 2 << nvram->max_tags_index;
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if (tn->flags & TEKRAM_DISCONNECT_ENABLE)
128
tp->usrflags |= SYM_DISC_ENABLED;
130
if (tn->flags & TEKRAM_SYNC_NEGO)
131
tp->usr_period = Tekram_sync[tn->sync_index & 0xf];
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tp->usr_width = (tn->flags & TEKRAM_WIDE_NEGO) ? 1 : 0;
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* Get target setup from NVRAM.
138
void sym_nvram_setup_target(struct sym_tcb *tp, int target, struct sym_nvram *nvp)
141
case SYM_SYMBIOS_NVRAM:
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sym_Symbios_setup_target(tp, target, &nvp->data.Symbios);
144
case SYM_TEKRAM_NVRAM:
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sym_Tekram_setup_target(tp, target, &nvp->data.Tekram);
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#ifdef SYM_CONF_DEBUG_NVRAM
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* Dump Symbios format NVRAM for debugging purpose.
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static void sym_display_Symbios_nvram(struct sym_device *np, Symbios_nvram *nvram)
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/* display Symbios nvram host data */
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printf("%s: HOST ID=%d%s%s%s%s%s%s\n",
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sym_name(np), nvram->host_id & 0x0f,
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(nvram->flags & SYMBIOS_SCAM_ENABLE) ? " SCAM" :"",
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(nvram->flags & SYMBIOS_PARITY_ENABLE) ? " PARITY" :"",
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(nvram->flags & SYMBIOS_VERBOSE_MSGS) ? " VERBOSE" :"",
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(nvram->flags & SYMBIOS_CHS_MAPPING) ? " CHS_ALT" :"",
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(nvram->flags2 & SYMBIOS_AVOID_BUS_RESET)?" NO_RESET" :"",
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(nvram->flags1 & SYMBIOS_SCAN_HI_LO) ? " HI_LO" :"");
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/* display Symbios nvram drive data */
171
for (i = 0 ; i < 15 ; i++) {
172
struct Symbios_target *tn = &nvram->target[i];
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printf("%s-%d:%s%s%s%s WIDTH=%d SYNC=%d TMO=%d\n",
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(tn->flags & SYMBIOS_DISCONNECT_ENABLE) ? " DISC" : "",
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(tn->flags & SYMBIOS_SCAN_AT_BOOT_TIME) ? " SCAN_BOOT" : "",
177
(tn->flags & SYMBIOS_SCAN_LUNS) ? " SCAN_LUNS" : "",
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(tn->flags & SYMBIOS_QUEUE_TAGS_ENABLED)? " TCQ" : "",
186
* Dump TEKRAM format NVRAM for debugging purpose.
188
static void sym_display_Tekram_nvram(struct sym_device *np, Tekram_nvram *nvram)
190
int i, tags, boot_delay;
193
/* display Tekram nvram host data */
194
tags = 2 << nvram->max_tags_index;
196
if (nvram->boot_delay_index < 6)
197
boot_delay = Tekram_boot_delay[nvram->boot_delay_index];
198
switch ((nvram->flags & TEKRAM_REMOVABLE_FLAGS) >> 6) {
200
case 0: rem = ""; break;
201
case 1: rem = " REMOVABLE=boot device"; break;
202
case 2: rem = " REMOVABLE=all"; break;
205
printf("%s: HOST ID=%d%s%s%s%s%s%s%s%s%s BOOT DELAY=%d tags=%d\n",
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sym_name(np), nvram->host_id & 0x0f,
207
(nvram->flags1 & SYMBIOS_SCAM_ENABLE) ? " SCAM" :"",
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(nvram->flags & TEKRAM_MORE_THAN_2_DRIVES) ? " >2DRIVES":"",
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(nvram->flags & TEKRAM_DRIVES_SUP_1GB) ? " >1GB" :"",
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(nvram->flags & TEKRAM_RESET_ON_POWER_ON) ? " RESET" :"",
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(nvram->flags & TEKRAM_ACTIVE_NEGATION) ? " ACT_NEG" :"",
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(nvram->flags & TEKRAM_IMMEDIATE_SEEK) ? " IMM_SEEK" :"",
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(nvram->flags & TEKRAM_SCAN_LUNS) ? " SCAN_LUNS" :"",
214
(nvram->flags1 & TEKRAM_F2_F6_ENABLED) ? " F2_F6" :"",
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rem, boot_delay, tags);
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/* display Tekram nvram drive data */
218
for (i = 0; i <= 15; i++) {
220
struct Tekram_target *tn = &nvram->target[i];
221
j = tn->sync_index & 0xf;
222
sync = Tekram_sync[j];
223
printf("%s-%d:%s%s%s%s%s%s PERIOD=%d\n",
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(tn->flags & TEKRAM_PARITY_CHECK) ? " PARITY" : "",
226
(tn->flags & TEKRAM_SYNC_NEGO) ? " SYNC" : "",
227
(tn->flags & TEKRAM_DISCONNECT_ENABLE) ? " DISC" : "",
228
(tn->flags & TEKRAM_START_CMD) ? " START" : "",
229
(tn->flags & TEKRAM_TAGGED_COMMANDS) ? " TCQ" : "",
230
(tn->flags & TEKRAM_WIDE_NEGO) ? " WIDE" : "",
235
static void sym_display_Symbios_nvram(struct sym_device *np, Symbios_nvram *nvram) { (void)np; (void)nvram; }
236
static void sym_display_Tekram_nvram(struct sym_device *np, Tekram_nvram *nvram) { (void)np; (void)nvram; }
237
#endif /* SYM_CONF_DEBUG_NVRAM */
241
* 24C16 EEPROM reading.
243
* GPOI0 - data in/data out
245
* Symbios NVRAM wiring now also used by Tekram.
254
* Set/clear data/clock bit in GPIO0
256
static void S24C16_set_bit(struct sym_device *np, u_char write_bit, u_char *gpreg,
275
OUTB(np, nc_gpreg, *gpreg);
281
* Send START condition to NVRAM to wake it up.
283
static void S24C16_start(struct sym_device *np, u_char *gpreg)
285
S24C16_set_bit(np, 1, gpreg, SET_BIT);
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S24C16_set_bit(np, 0, gpreg, SET_CLK);
287
S24C16_set_bit(np, 0, gpreg, CLR_BIT);
288
S24C16_set_bit(np, 0, gpreg, CLR_CLK);
292
* Send STOP condition to NVRAM - puts NVRAM to sleep... ZZzzzz!!
294
static void S24C16_stop(struct sym_device *np, u_char *gpreg)
296
S24C16_set_bit(np, 0, gpreg, SET_CLK);
297
S24C16_set_bit(np, 1, gpreg, SET_BIT);
301
* Read or write a bit to the NVRAM,
302
* read if GPIO0 input else write if GPIO0 output
304
static void S24C16_do_bit(struct sym_device *np, u_char *read_bit, u_char write_bit,
307
S24C16_set_bit(np, write_bit, gpreg, SET_BIT);
308
S24C16_set_bit(np, 0, gpreg, SET_CLK);
310
*read_bit = INB(np, nc_gpreg);
311
S24C16_set_bit(np, 0, gpreg, CLR_CLK);
312
S24C16_set_bit(np, 0, gpreg, CLR_BIT);
316
* Output an ACK to the NVRAM after reading,
317
* change GPIO0 to output and when done back to an input
319
static void S24C16_write_ack(struct sym_device *np, u_char write_bit, u_char *gpreg,
322
OUTB(np, nc_gpcntl, *gpcntl & 0xfe);
323
S24C16_do_bit(np, NULL, write_bit, gpreg);
324
OUTB(np, nc_gpcntl, *gpcntl);
328
* Input an ACK from NVRAM after writing,
329
* change GPIO0 to input and when done back to an output
331
static void S24C16_read_ack(struct sym_device *np, u_char *read_bit, u_char *gpreg,
334
OUTB(np, nc_gpcntl, *gpcntl | 0x01);
335
S24C16_do_bit(np, read_bit, 1, gpreg);
336
OUTB(np, nc_gpcntl, *gpcntl);
340
* WRITE a byte to the NVRAM and then get an ACK to see it was accepted OK,
341
* GPIO0 must already be set as an output
343
static void S24C16_write_byte(struct sym_device *np, u_char *ack_data, u_char write_data,
344
u_char *gpreg, u_char *gpcntl)
348
for (x = 0; x < 8; x++)
349
S24C16_do_bit(np, NULL, (write_data >> (7 - x)) & 0x01, gpreg);
351
S24C16_read_ack(np, ack_data, gpreg, gpcntl);
355
* READ a byte from the NVRAM and then send an ACK to say we have got it,
356
* GPIO0 must already be set as an input
358
static void S24C16_read_byte(struct sym_device *np, u_char *read_data, u_char ack_data,
359
u_char *gpreg, u_char *gpcntl)
365
for (x = 0; x < 8; x++) {
366
S24C16_do_bit(np, &read_bit, 1, gpreg);
367
*read_data |= ((read_bit & 0x01) << (7 - x));
370
S24C16_write_ack(np, ack_data, gpreg, gpcntl);
373
#ifdef SYM_CONF_NVRAM_WRITE_SUPPORT
375
* Write 'len' bytes starting at 'offset'.
377
static int sym_write_S24C16_nvram(struct sym_device *np, int offset,
378
u_char *data, int len)
380
u_char gpcntl, gpreg;
381
u_char old_gpcntl, old_gpreg;
385
/* save current state of GPCNTL and GPREG */
386
old_gpreg = INB(np, nc_gpreg);
387
old_gpcntl = INB(np, nc_gpcntl);
388
gpcntl = old_gpcntl & 0x1c;
390
/* set up GPREG & GPCNTL to set GPIO0 and GPIO1 in to known state */
391
OUTB(np, nc_gpreg, old_gpreg);
392
OUTB(np, nc_gpcntl, gpcntl);
394
/* this is to set NVRAM into a known state with GPIO0/1 both low */
396
S24C16_set_bit(np, 0, &gpreg, CLR_CLK);
397
S24C16_set_bit(np, 0, &gpreg, CLR_BIT);
399
/* now set NVRAM inactive with GPIO0/1 both high */
400
S24C16_stop(np, &gpreg);
402
/* NVRAM has to be written in segments of 16 bytes */
403
for (x = 0; x < len ; x += 16) {
405
S24C16_start(np, &gpreg);
406
S24C16_write_byte(np, &ack_data,
407
0xa0 | (((offset+x) >> 7) & 0x0e),
409
} while (ack_data & 0x01);
411
S24C16_write_byte(np, &ack_data, (offset+x) & 0xff,
414
for (y = 0; y < 16; y++)
415
S24C16_write_byte(np, &ack_data, data[x+y],
417
S24C16_stop(np, &gpreg);
420
/* return GPIO0/1 to original states after having accessed NVRAM */
421
OUTB(np, nc_gpcntl, old_gpcntl);
422
OUTB(np, nc_gpreg, old_gpreg);
426
#endif /* SYM_CONF_NVRAM_WRITE_SUPPORT */
429
* Read 'len' bytes starting at 'offset'.
431
static int sym_read_S24C16_nvram(struct sym_device *np, int offset, u_char *data, int len)
433
u_char gpcntl, gpreg;
434
u_char old_gpcntl, old_gpreg;
439
/* save current state of GPCNTL and GPREG */
440
old_gpreg = INB(np, nc_gpreg);
441
old_gpcntl = INB(np, nc_gpcntl);
442
gpcntl = old_gpcntl & 0x1c;
444
/* set up GPREG & GPCNTL to set GPIO0 and GPIO1 in to known state */
445
OUTB(np, nc_gpreg, old_gpreg);
446
OUTB(np, nc_gpcntl, gpcntl);
448
/* this is to set NVRAM into a known state with GPIO0/1 both low */
450
S24C16_set_bit(np, 0, &gpreg, CLR_CLK);
451
S24C16_set_bit(np, 0, &gpreg, CLR_BIT);
453
/* now set NVRAM inactive with GPIO0/1 both high */
454
S24C16_stop(np, &gpreg);
457
S24C16_start(np, &gpreg);
459
/* write device code and random address MSB */
460
S24C16_write_byte(np, &ack_data,
461
0xa0 | ((offset >> 7) & 0x0e), &gpreg, &gpcntl);
465
/* write random address LSB */
466
S24C16_write_byte(np, &ack_data,
467
offset & 0xff, &gpreg, &gpcntl);
471
/* regenerate START state to set up for reading */
472
S24C16_start(np, &gpreg);
474
/* rewrite device code and address MSB with read bit set (lsb = 0x01) */
475
S24C16_write_byte(np, &ack_data,
476
0xa1 | ((offset >> 7) & 0x0e), &gpreg, &gpcntl);
480
/* now set up GPIO0 for inputting data */
482
OUTB(np, nc_gpcntl, gpcntl);
484
/* input all requested data - only part of total NVRAM */
485
for (x = 0; x < len; x++)
486
S24C16_read_byte(np, &data[x], (x == (len-1)), &gpreg, &gpcntl);
488
/* finally put NVRAM back in inactive mode */
490
OUTB(np, nc_gpcntl, gpcntl);
491
S24C16_stop(np, &gpreg);
494
/* return GPIO0/1 to original states after having accessed NVRAM */
495
OUTB(np, nc_gpcntl, old_gpcntl);
496
OUTB(np, nc_gpreg, old_gpreg);
507
* Try reading Symbios NVRAM.
510
static int sym_read_Symbios_nvram(struct sym_device *np, Symbios_nvram *nvram)
512
static u_char Symbios_trailer[6] = {0xfe, 0xfe, 0, 0, 0, 0};
513
u_char *data = (u_char *) nvram;
514
int len = sizeof(*nvram);
518
/* probe the 24c16 and read the SYMBIOS 24c16 area */
519
if (sym_read_S24C16_nvram (np, SYMBIOS_NVRAM_ADDRESS, data, len))
522
/* check valid NVRAM signature, verify byte count and checksum */
523
if (nvram->type != 0 ||
524
memcmp(nvram->trailer, Symbios_trailer, 6) ||
525
nvram->byte_count != len - 12)
528
/* verify checksum */
529
for (x = 6, csum = 0; x < len - 6; x++)
531
if (csum != nvram->checksum)
538
* 93C46 EEPROM reading.
543
* GPIO4 - chip select
549
* Pulse clock bit in GPIO0
551
static void T93C46_Clk(struct sym_device *np, u_char *gpreg)
553
OUTB(np, nc_gpreg, *gpreg | 0x04);
556
OUTB(np, nc_gpreg, *gpreg);
560
* Read bit from NVRAM
562
static void T93C46_Read_Bit(struct sym_device *np, u_char *read_bit, u_char *gpreg)
565
T93C46_Clk(np, gpreg);
566
*read_bit = INB(np, nc_gpreg);
572
static void T93C46_Write_Bit(struct sym_device *np, u_char write_bit, u_char *gpreg)
574
if (write_bit & 0x01)
581
OUTB(np, nc_gpreg, *gpreg);
585
T93C46_Clk(np, gpreg);
589
* Send STOP condition to NVRAM - puts NVRAM to sleep... ZZZzzz!!
591
static void T93C46_Stop(struct sym_device *np, u_char *gpreg)
594
OUTB(np, nc_gpreg, *gpreg);
598
T93C46_Clk(np, gpreg);
602
* Send read command and address to NVRAM
604
static void T93C46_Send_Command(struct sym_device *np, u_short write_data,
605
u_char *read_bit, u_char *gpreg)
609
/* send 9 bits, start bit (1), command (2), address (6) */
610
for (x = 0; x < 9; x++)
611
T93C46_Write_Bit(np, (u_char) (write_data >> (8 - x)), gpreg);
613
*read_bit = INB(np, nc_gpreg);
617
* READ 2 bytes from the NVRAM
619
static void T93C46_Read_Word(struct sym_device *np,
620
unsigned short *nvram_data, unsigned char *gpreg)
626
for (x = 0; x < 16; x++) {
627
T93C46_Read_Bit(np, &read_bit, gpreg);
630
*nvram_data |= (0x01 << (15 - x));
632
*nvram_data &= ~(0x01 << (15 - x));
637
* Read Tekram NvRAM data.
639
static int T93C46_Read_Data(struct sym_device *np, unsigned short *data,
640
int len, unsigned char *gpreg)
644
for (x = 0; x < len; x++) {
645
unsigned char read_bit;
646
/* output read command and address */
647
T93C46_Send_Command(np, 0x180 | x, &read_bit, gpreg);
650
T93C46_Read_Word(np, &data[x], gpreg);
651
T93C46_Stop(np, gpreg);
658
* Try reading 93C46 Tekram NVRAM.
660
static int sym_read_T93C46_nvram(struct sym_device *np, Tekram_nvram *nvram)
662
u_char gpcntl, gpreg;
663
u_char old_gpcntl, old_gpreg;
666
/* save current state of GPCNTL and GPREG */
667
old_gpreg = INB(np, nc_gpreg);
668
old_gpcntl = INB(np, nc_gpcntl);
670
/* set up GPREG & GPCNTL to set GPIO0/1/2/4 in to known state, 0 in,
672
gpreg = old_gpreg & 0xe9;
673
OUTB(np, nc_gpreg, gpreg);
674
gpcntl = (old_gpcntl & 0xe9) | 0x09;
675
OUTB(np, nc_gpcntl, gpcntl);
677
/* input all of NVRAM, 64 words */
678
retv = T93C46_Read_Data(np, (u_short *) nvram,
679
sizeof(*nvram) / sizeof(short), &gpreg);
681
/* return GPIO0/1/2/4 to original states after having accessed NVRAM */
682
OUTB(np, nc_gpcntl, old_gpcntl);
683
OUTB(np, nc_gpreg, old_gpreg);
689
* Try reading Tekram NVRAM.
692
static int sym_read_Tekram_nvram (struct sym_device *np, Tekram_nvram *nvram)
694
u_char *data = (u_char *) nvram;
695
int len = sizeof(*nvram);
699
switch (np->pdev->device) {
700
case PCI_DEVICE_ID_NCR_53C885:
701
case PCI_DEVICE_ID_NCR_53C895:
702
case PCI_DEVICE_ID_NCR_53C896:
703
x = sym_read_S24C16_nvram(np, TEKRAM_24C16_NVRAM_ADDRESS,
706
case PCI_DEVICE_ID_NCR_53C875:
707
x = sym_read_S24C16_nvram(np, TEKRAM_24C16_NVRAM_ADDRESS,
712
x = sym_read_T93C46_nvram(np, nvram);
718
/* verify checksum */
719
for (x = 0, csum = 0; x < len - 1; x += 2)
720
csum += data[x] + (data[x+1] << 8);
729
* Host firmware (PDC) keeps a table for altering SCSI capabilities.
730
* Many newer machines export one channel of 53c896 chip as SE, 50-pin HD.
731
* Also used for Multi-initiator SCSI clusters to set the SCSI Initiator ID.
733
static int sym_read_parisc_pdc(struct sym_device *np, struct pdc_initiator *pdc)
735
struct hardware_path hwpath;
736
get_pci_node_path(np->pdev, &hwpath);
737
if (!pdc_get_initiator(&hwpath, pdc))
740
return SYM_PARISC_PDC;
743
static inline int sym_read_parisc_pdc(struct sym_device *np,
744
struct pdc_initiator *x)
751
* Try reading Symbios or Tekram NVRAM
753
int sym_read_nvram(struct sym_device *np, struct sym_nvram *nvp)
755
if (!sym_read_Symbios_nvram(np, &nvp->data.Symbios)) {
756
nvp->type = SYM_SYMBIOS_NVRAM;
757
sym_display_Symbios_nvram(np, &nvp->data.Symbios);
758
} else if (!sym_read_Tekram_nvram(np, &nvp->data.Tekram)) {
759
nvp->type = SYM_TEKRAM_NVRAM;
760
sym_display_Tekram_nvram(np, &nvp->data.Tekram);
762
nvp->type = sym_read_parisc_pdc(np, &nvp->data.parisc);
767
char *sym_nvram_type(struct sym_nvram *nvp)
770
case SYM_SYMBIOS_NVRAM:
771
return "Symbios NVRAM";
772
case SYM_TEKRAM_NVRAM:
773
return "Tekram NVRAM";
775
return "PA-RISC Firmware";