blob: 37534bb483a70c68be224655629ac45c4067c1d0 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002 * Copyright (C) 1996-2001 Linus Torvalds & author (see below)
3 */
4
5/*
6 * Version 0.03 Cleaned auto-tune, added probe
7 * Version 0.04 Added second channel tuning
8 * Version 0.05 Enhanced tuning ; added qd6500 support
9 * Version 0.06 Added dos driver's list
10 * Version 0.07 Second channel bug fix
11 *
12 * QDI QD6500/QD6580 EIDE controller fast support
13 *
14 * Please set local bus speed using kernel parameter idebus
15 * for example, "idebus=33" stands for 33Mhz VLbus
16 * To activate controller support, use "ide0=qd65xx"
Bartlomiej Zolnierkiewiczb6209a92007-03-03 17:48:55 +010017 * To enable tuning, use "hda=autotune hdb=autotune"
18 * To enable 2nd channel tuning (qd6580 only), use "hdc=autotune hdd=autotune"
Linus Torvalds1da177e2005-04-16 15:20:36 -070019 */
20
21/*
22 * Rewritten from the work of Colten Edwards <pje120@cs.usask.ca> by
23 * Samuel Thibault <samuel.thibault@fnac.net>
24 */
25
Linus Torvalds1da177e2005-04-16 15:20:36 -070026#include <linux/module.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070027#include <linux/types.h>
28#include <linux/kernel.h>
29#include <linux/delay.h>
30#include <linux/timer.h>
31#include <linux/mm.h>
32#include <linux/ioport.h>
33#include <linux/blkdev.h>
34#include <linux/hdreg.h>
35#include <linux/ide.h>
36#include <linux/init.h>
37#include <asm/system.h>
38#include <asm/io.h>
39
40#include "qd65xx.h"
41
42/*
43 * I/O ports are 0x30-0x31 (and 0x32-0x33 for qd6580)
44 * or 0xb0-0xb1 (and 0xb2-0xb3 for qd6580)
45 * -- qd6500 is a single IDE interface
46 * -- qd6580 is a dual IDE interface
47 *
48 * More research on qd6580 being done by willmore@cig.mot.com (David)
49 * More Information given by Petr Soucek (petr@ryston.cz)
50 * http://www.ryston.cz/petr/vlb
51 */
52
53/*
54 * base: Timer1
55 *
56 *
57 * base+0x01: Config (R/O)
58 *
59 * bit 0: ide baseport: 1 = 0x1f0 ; 0 = 0x170 (only useful for qd6500)
60 * bit 1: qd65xx baseport: 1 = 0xb0 ; 0 = 0x30
61 * bit 2: ID3: bus speed: 1 = <=33MHz ; 0 = >33MHz
62 * bit 3: qd6500: 1 = disabled, 0 = enabled
63 * qd6580: 1
64 * upper nibble:
65 * qd6500: 1100
66 * qd6580: either 1010 or 0101
67 *
68 *
69 * base+0x02: Timer2 (qd6580 only)
70 *
71 *
72 * base+0x03: Control (qd6580 only)
73 *
74 * bits 0-3 must always be set 1
75 * bit 4 must be set 1, but is set 0 by dos driver while measuring vlb clock
76 * bit 0 : 1 = Only primary port enabled : channel 0 for hda, channel 1 for hdb
77 * 0 = Primary and Secondary ports enabled : channel 0 for hda & hdb
78 * channel 1 for hdc & hdd
79 * bit 1 : 1 = only disks on primary port
80 * 0 = disks & ATAPI devices on primary port
81 * bit 2-4 : always 0
82 * bit 5 : status, but of what ?
83 * bit 6 : always set 1 by dos driver
84 * bit 7 : set 1 for non-ATAPI devices on primary port
85 * (maybe read-ahead and post-write buffer ?)
86 */
87
88static int timings[4]={-1,-1,-1,-1}; /* stores current timing for each timer */
89
Linus Torvalds1da177e2005-04-16 15:20:36 -070090/*
91 * qd_select:
92 *
93 * This routine is invoked from ide.c to prepare for access to a given drive.
94 */
95
96static void qd_select (ide_drive_t *drive)
97{
98 u8 index = (( (QD_TIMREG(drive)) & 0x80 ) >> 7) |
99 (QD_TIMREG(drive) & 0x02);
100
101 if (timings[index] != QD_TIMING(drive))
Bartlomiej Zolnierkiewiczc1965672007-10-20 00:32:37 +0200102 outb(timings[index] = QD_TIMING(drive), QD_TIMREG(drive));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103}
104
105/*
106 * qd6500_compute_timing
107 *
108 * computes the timing value where
109 * lower nibble represents active time, in count of VLB clocks
110 * upper nibble represents recovery time, in count of VLB clocks
111 */
112
113static u8 qd6500_compute_timing (ide_hwif_t *hwif, int active_time, int recovery_time)
114{
115 u8 active_cycle,recovery_cycle;
116
117 if (system_bus_clock()<=33) {
118 active_cycle = 9 - IDE_IN(active_time * system_bus_clock() / 1000 + 1, 2, 9);
119 recovery_cycle = 15 - IDE_IN(recovery_time * system_bus_clock() / 1000 + 1, 0, 15);
120 } else {
121 active_cycle = 8 - IDE_IN(active_time * system_bus_clock() / 1000 + 1, 1, 8);
122 recovery_cycle = 18 - IDE_IN(recovery_time * system_bus_clock() / 1000 + 1, 3, 18);
123 }
124
125 return((recovery_cycle<<4) | 0x08 | active_cycle);
126}
127
128/*
129 * qd6580_compute_timing
130 *
131 * idem for qd6580
132 */
133
134static u8 qd6580_compute_timing (int active_time, int recovery_time)
135{
136 u8 active_cycle = 17 - IDE_IN(active_time * system_bus_clock() / 1000 + 1, 2, 17);
137 u8 recovery_cycle = 15 - IDE_IN(recovery_time * system_bus_clock() / 1000 + 1, 2, 15);
138
139 return((recovery_cycle<<4) | active_cycle);
140}
141
142/*
143 * qd_find_disk_type
144 *
145 * tries to find timing from dos driver's table
146 */
147
148static int qd_find_disk_type (ide_drive_t *drive,
149 int *active_time, int *recovery_time)
150{
151 struct qd65xx_timing_s *p;
152 char model[40];
153
154 if (!*drive->id->model) return 0;
155
156 strncpy(model,drive->id->model,40);
157 ide_fixstring(model,40,1); /* byte-swap */
158
159 for (p = qd65xx_timing ; p->offset != -1 ; p++) {
160 if (!strncmp(p->model, model+p->offset, 4)) {
161 printk(KERN_DEBUG "%s: listed !\n", drive->name);
162 *active_time = p->active;
163 *recovery_time = p->recovery;
164 return 1;
165 }
166 }
167 return 0;
168}
169
170/*
171 * qd_timing_ok:
172 *
173 * check whether timings don't conflict
174 */
175
176static int qd_timing_ok (ide_drive_t drives[])
177{
178 return (IDE_IMPLY(drives[0].present && drives[1].present,
179 IDE_IMPLY(QD_TIMREG(drives) == QD_TIMREG(drives+1),
180 QD_TIMING(drives) == QD_TIMING(drives+1))));
181 /* if same timing register, must be same timing */
182}
183
184/*
185 * qd_set_timing:
186 *
187 * records the timing, and enables selectproc as needed
188 */
189
190static void qd_set_timing (ide_drive_t *drive, u8 timing)
191{
192 ide_hwif_t *hwif = HWIF(drive);
193
194 drive->drive_data &= 0xff00;
195 drive->drive_data |= timing;
196 if (qd_timing_ok(hwif->drives)) {
197 qd_select(drive); /* selects once */
198 hwif->selectproc = NULL;
199 } else
200 hwif->selectproc = &qd_select;
201
202 printk(KERN_DEBUG "%s: %#x\n", drive->name, timing);
203}
204
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200205static void qd6500_set_pio_mode(ide_drive_t *drive, const u8 pio)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206{
207 int active_time = 175;
208 int recovery_time = 415; /* worst case values from the dos driver */
209
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200210 /*
211 * FIXME: use "pio" value
212 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700213 if (drive->id && !qd_find_disk_type(drive, &active_time, &recovery_time)
214 && drive->id->tPIO && (drive->id->field_valid & 0x02)
215 && drive->id->eide_pio >= 240) {
216
217 printk(KERN_INFO "%s: PIO mode%d\n", drive->name,
218 drive->id->tPIO);
219 active_time = 110;
220 recovery_time = drive->id->eide_pio - 120;
221 }
222
223 qd_set_timing(drive, qd6500_compute_timing(HWIF(drive), active_time, recovery_time));
224}
225
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200226static void qd6580_set_pio_mode(ide_drive_t *drive, const u8 pio)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700227{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700228 int base = HWIF(drive)->select_data;
Bartlomiej Zolnierkiewicz7dd00082007-07-20 01:11:56 +0200229 unsigned int cycle_time;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700230 int active_time = 175;
231 int recovery_time = 415; /* worst case values from the dos driver */
232
233 if (drive->id && !qd_find_disk_type(drive, &active_time, &recovery_time)) {
Bartlomiej Zolnierkiewicz7dd00082007-07-20 01:11:56 +0200234 cycle_time = ide_pio_cycle_time(drive, pio);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700235
236 switch (pio) {
237 case 0: break;
238 case 3:
Bartlomiej Zolnierkiewicz7dd00082007-07-20 01:11:56 +0200239 if (cycle_time >= 110) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240 active_time = 86;
Bartlomiej Zolnierkiewicz7dd00082007-07-20 01:11:56 +0200241 recovery_time = cycle_time - 102;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700242 } else
243 printk(KERN_WARNING "%s: Strange recovery time !\n",drive->name);
244 break;
245 case 4:
Bartlomiej Zolnierkiewicz7dd00082007-07-20 01:11:56 +0200246 if (cycle_time >= 69) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700247 active_time = 70;
Bartlomiej Zolnierkiewicz7dd00082007-07-20 01:11:56 +0200248 recovery_time = cycle_time - 61;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249 } else
250 printk(KERN_WARNING "%s: Strange recovery time !\n",drive->name);
251 break;
252 default:
Bartlomiej Zolnierkiewicz7dd00082007-07-20 01:11:56 +0200253 if (cycle_time >= 180) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254 active_time = 110;
Bartlomiej Zolnierkiewicz7dd00082007-07-20 01:11:56 +0200255 recovery_time = cycle_time - 120;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256 } else {
257 active_time = ide_pio_timings[pio].active_time;
Bartlomiej Zolnierkiewicz7dd00082007-07-20 01:11:56 +0200258 recovery_time = cycle_time - active_time;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259 }
260 }
261 printk(KERN_INFO "%s: PIO mode%d\n", drive->name,pio);
262 }
263
264 if (!HWIF(drive)->channel && drive->media != ide_disk) {
Bartlomiej Zolnierkiewiczc1965672007-10-20 00:32:37 +0200265 outb(0x5f, QD_CONTROL_PORT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700266 printk(KERN_WARNING "%s: ATAPI: disabled read-ahead FIFO "
267 "and post-write buffer on %s.\n",
268 drive->name, HWIF(drive)->name);
269 }
270
271 qd_set_timing(drive, qd6580_compute_timing(active_time, recovery_time));
272}
273
274/*
275 * qd_testreg
276 *
277 * tests if the given port is a register
278 */
279
280static int __init qd_testreg(int port)
281{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700282 unsigned long flags;
Bartlomiej Zolnierkiewiczf9498202007-10-20 00:32:35 +0200283 u8 savereg, readreg;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700284
Bartlomiej Zolnierkiewiczc1965672007-10-20 00:32:37 +0200285 local_irq_save(flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700286 savereg = inb_p(port);
287 outb_p(QD_TESTVAL, port); /* safe value */
288 readreg = inb_p(port);
289 outb(savereg, port);
Bartlomiej Zolnierkiewiczc1965672007-10-20 00:32:37 +0200290 local_irq_restore(flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700291
292 if (savereg == QD_TESTVAL) {
293 printk(KERN_ERR "Outch ! the probe for qd65xx isn't reliable !\n");
294 printk(KERN_ERR "Please contact maintainers to tell about your hardware\n");
295 printk(KERN_ERR "Assuming qd65xx is not present.\n");
296 return 1;
297 }
298
299 return (readreg != QD_TESTVAL);
300}
301
302/*
303 * qd_setup:
304 *
305 * called to setup an ata channel : adjusts attributes & links for tuning
306 */
307
308static void __init qd_setup(ide_hwif_t *hwif, int base, int config,
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200309 unsigned int data0, unsigned int data1)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700310{
311 hwif->chipset = ide_qd65xx;
312 hwif->channel = hwif->index;
313 hwif->select_data = base;
314 hwif->config_data = config;
315 hwif->drives[0].drive_data = data0;
316 hwif->drives[1].drive_data = data1;
317 hwif->drives[0].io_32bit =
318 hwif->drives[1].io_32bit = 1;
Bartlomiej Zolnierkiewicz4099d142007-07-20 01:11:59 +0200319 hwif->pio_mask = ATA_PIO4;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700320}
321
322/*
323 * qd_unsetup:
324 *
325 * called to unsetup an ata channel : back to default values, unlinks tuning
326 */
327/*
328static void __exit qd_unsetup(ide_hwif_t *hwif)
329{
330 u8 config = hwif->config_data;
331 int base = hwif->select_data;
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200332 void *set_pio_mode = (void *)hwif->set_pio_mode;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700333
334 if (hwif->chipset != ide_qd65xx)
335 return;
336
337 printk(KERN_NOTICE "%s: back to defaults\n", hwif->name);
338
339 hwif->selectproc = NULL;
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200340 hwif->set_pio_mode = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700341
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200342 if (set_pio_mode == (void *)qd6500_set_pio_mode) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700343 // will do it for both
Bartlomiej Zolnierkiewiczc1965672007-10-20 00:32:37 +0200344 outb(QD6500_DEF_DATA, QD_TIMREG(&hwif->drives[0]));
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200345 } else if (set_pio_mode == (void *)qd6580_set_pio_mode) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700346 if (QD_CONTROL(hwif) & QD_CONTR_SEC_DISABLED) {
Bartlomiej Zolnierkiewiczc1965672007-10-20 00:32:37 +0200347 outb(QD6580_DEF_DATA, QD_TIMREG(&hwif->drives[0]));
348 outb(QD6580_DEF_DATA2, QD_TIMREG(&hwif->drives[1]));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700349 } else {
Bartlomiej Zolnierkiewiczc1965672007-10-20 00:32:37 +0200350 outb(hwif->channel ? QD6580_DEF_DATA2 : QD6580_DEF_DATA, QD_TIMREG(&hwif->drives[0]));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700351 }
352 } else {
353 printk(KERN_WARNING "Unknown qd65xx tuning fonction !\n");
354 printk(KERN_WARNING "keeping settings !\n");
355 }
356}
357*/
358
359/*
360 * qd_probe:
361 *
362 * looks at the specified baseport, and if qd found, registers & initialises it
363 * return 1 if another qd may be probed
364 */
365
366static int __init qd_probe(int base)
367{
368 ide_hwif_t *hwif;
Bartlomiej Zolnierkiewicz8447d9d2007-10-20 00:32:31 +0200369 u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
Linus Torvalds1da177e2005-04-16 15:20:36 -0700370 u8 config;
371 u8 unit;
372
Bartlomiej Zolnierkiewiczc1965672007-10-20 00:32:37 +0200373 config = inb(QD_CONFIG_PORT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700374
375 if (! ((config & QD_CONFIG_BASEPORT) >> 1 == (base == 0xb0)) )
376 return 1;
377
378 unit = ! (config & QD_CONFIG_IDE_BASEPORT);
379
380 if ((config & 0xf0) == QD_CONFIG_QD6500) {
381
382 if (qd_testreg(base)) return 1; /* bad register */
383
384 /* qd6500 found */
385
386 hwif = &ide_hwifs[unit];
387 printk(KERN_NOTICE "%s: qd6500 at %#x\n", hwif->name, base);
388 printk(KERN_DEBUG "qd6500: config=%#x, ID3=%u\n",
389 config, QD_ID3);
390
391 if (config & QD_CONFIG_DISABLED) {
392 printk(KERN_WARNING "qd6500 is disabled !\n");
393 return 1;
394 }
395
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200396 qd_setup(hwif, base, config, QD6500_DEF_DATA, QD6500_DEF_DATA);
397
398 hwif->set_pio_mode = &qd6500_set_pio_mode;
399
Bartlomiej Zolnierkiewicz8447d9d2007-10-20 00:32:31 +0200400 idx[0] = unit;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401
Bartlomiej Zolnierkiewicz8447d9d2007-10-20 00:32:31 +0200402 ide_device_add(idx);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700403
404 return 1;
405 }
406
407 if (((config & 0xf0) == QD_CONFIG_QD6580_A) ||
408 ((config & 0xf0) == QD_CONFIG_QD6580_B)) {
409
410 u8 control;
411
412 if (qd_testreg(base) || qd_testreg(base+0x02)) return 1;
413 /* bad registers */
414
415 /* qd6580 found */
416
Bartlomiej Zolnierkiewiczc1965672007-10-20 00:32:37 +0200417 control = inb(QD_CONTROL_PORT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418
419 printk(KERN_NOTICE "qd6580 at %#x\n", base);
420 printk(KERN_DEBUG "qd6580: config=%#x, control=%#x, ID3=%u\n",
421 config, control, QD_ID3);
422
423 if (control & QD_CONTR_SEC_DISABLED) {
424 /* secondary disabled */
425
426 hwif = &ide_hwifs[unit];
427 printk(KERN_INFO "%s: qd6580: single IDE board\n",
428 hwif->name);
429 qd_setup(hwif, base, config | (control << 8),
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200430 QD6580_DEF_DATA, QD6580_DEF_DATA2);
431
432 hwif->set_pio_mode = &qd6580_set_pio_mode;
433
Bartlomiej Zolnierkiewicz8447d9d2007-10-20 00:32:31 +0200434 idx[0] = unit;
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200435
Bartlomiej Zolnierkiewicz8447d9d2007-10-20 00:32:31 +0200436 ide_device_add(idx);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437
Bartlomiej Zolnierkiewiczc1965672007-10-20 00:32:37 +0200438 outb(QD_DEF_CONTR, QD_CONTROL_PORT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700439
440 return 1;
441 } else {
442 ide_hwif_t *mate;
443
444 hwif = &ide_hwifs[0];
445 mate = &ide_hwifs[1];
446 /* secondary enabled */
447 printk(KERN_INFO "%s&%s: qd6580: dual IDE board\n",
448 hwif->name, mate->name);
449
450 qd_setup(hwif, base, config | (control << 8),
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200451 QD6580_DEF_DATA, QD6580_DEF_DATA);
452
453 hwif->set_pio_mode = &qd6580_set_pio_mode;
454
Linus Torvalds1da177e2005-04-16 15:20:36 -0700455 qd_setup(mate, base, config | (control << 8),
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200456 QD6580_DEF_DATA2, QD6580_DEF_DATA2);
457
458 mate->set_pio_mode = &qd6580_set_pio_mode;
459
Bartlomiej Zolnierkiewicz8447d9d2007-10-20 00:32:31 +0200460 idx[0] = 0;
461 idx[1] = 1;
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200462
Bartlomiej Zolnierkiewicz8447d9d2007-10-20 00:32:31 +0200463 ide_device_add(idx);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700464
Bartlomiej Zolnierkiewiczc1965672007-10-20 00:32:37 +0200465 outb(QD_DEF_CONTR, QD_CONTROL_PORT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700466
467 return 0; /* no other qd65xx possible */
468 }
469 }
470 /* no qd65xx found */
471 return 1;
472}
473
Bartlomiej Zolnierkiewicz84913882007-03-03 17:48:55 +0100474int probe_qd65xx = 0;
475
476module_param_named(probe, probe_qd65xx, bool, 0);
477MODULE_PARM_DESC(probe, "probe for QD65xx chipsets");
478
Bartlomiej Zolnierkiewiczade2daf2008-01-26 20:13:07 +0100479static int __init qd65xx_init(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700480{
Bartlomiej Zolnierkiewicz84913882007-03-03 17:48:55 +0100481 if (probe_qd65xx == 0)
482 return -ENODEV;
483
Linus Torvalds1da177e2005-04-16 15:20:36 -0700484 if (qd_probe(0x30))
485 qd_probe(0xb0);
486 if (ide_hwifs[0].chipset != ide_qd65xx &&
487 ide_hwifs[1].chipset != ide_qd65xx)
488 return -ENODEV;
489 return 0;
490}
491
Linus Torvalds1da177e2005-04-16 15:20:36 -0700492module_init(qd65xx_init);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700493
494MODULE_AUTHOR("Samuel Thibault");
495MODULE_DESCRIPTION("support of qd65xx vlb ide chipset");
496MODULE_LICENSE("GPL");