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Commit | Line | Data |
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1da177e4 | 1 | /* |
1da177e4 LT |
2 | * 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 | * | |
1da177e4 | 14 | * To activate controller support, use "ide0=qd65xx" |
1da177e4 LT |
15 | */ |
16 | ||
17 | /* | |
18 | * Rewritten from the work of Colten Edwards <pje120@cs.usask.ca> by | |
19 | * Samuel Thibault <samuel.thibault@fnac.net> | |
20 | */ | |
21 | ||
1da177e4 | 22 | #include <linux/module.h> |
1da177e4 LT |
23 | #include <linux/types.h> |
24 | #include <linux/kernel.h> | |
25 | #include <linux/delay.h> | |
26 | #include <linux/timer.h> | |
27 | #include <linux/mm.h> | |
28 | #include <linux/ioport.h> | |
29 | #include <linux/blkdev.h> | |
1da177e4 LT |
30 | #include <linux/ide.h> |
31 | #include <linux/init.h> | |
32 | #include <asm/system.h> | |
33 | #include <asm/io.h> | |
34 | ||
d92f1a28 BZ |
35 | #define DRV_NAME "qd65xx" |
36 | ||
1da177e4 LT |
37 | #include "qd65xx.h" |
38 | ||
39 | /* | |
40 | * I/O ports are 0x30-0x31 (and 0x32-0x33 for qd6580) | |
41 | * or 0xb0-0xb1 (and 0xb2-0xb3 for qd6580) | |
42 | * -- qd6500 is a single IDE interface | |
43 | * -- qd6580 is a dual IDE interface | |
44 | * | |
45 | * More research on qd6580 being done by willmore@cig.mot.com (David) | |
46 | * More Information given by Petr Soucek (petr@ryston.cz) | |
47 | * http://www.ryston.cz/petr/vlb | |
48 | */ | |
49 | ||
50 | /* | |
51 | * base: Timer1 | |
52 | * | |
53 | * | |
54 | * base+0x01: Config (R/O) | |
55 | * | |
56 | * bit 0: ide baseport: 1 = 0x1f0 ; 0 = 0x170 (only useful for qd6500) | |
57 | * bit 1: qd65xx baseport: 1 = 0xb0 ; 0 = 0x30 | |
58 | * bit 2: ID3: bus speed: 1 = <=33MHz ; 0 = >33MHz | |
59 | * bit 3: qd6500: 1 = disabled, 0 = enabled | |
60 | * qd6580: 1 | |
61 | * upper nibble: | |
62 | * qd6500: 1100 | |
63 | * qd6580: either 1010 or 0101 | |
64 | * | |
65 | * | |
66 | * base+0x02: Timer2 (qd6580 only) | |
67 | * | |
68 | * | |
69 | * base+0x03: Control (qd6580 only) | |
70 | * | |
71 | * bits 0-3 must always be set 1 | |
72 | * bit 4 must be set 1, but is set 0 by dos driver while measuring vlb clock | |
73 | * bit 0 : 1 = Only primary port enabled : channel 0 for hda, channel 1 for hdb | |
74 | * 0 = Primary and Secondary ports enabled : channel 0 for hda & hdb | |
75 | * channel 1 for hdc & hdd | |
76 | * bit 1 : 1 = only disks on primary port | |
77 | * 0 = disks & ATAPI devices on primary port | |
78 | * bit 2-4 : always 0 | |
79 | * bit 5 : status, but of what ? | |
80 | * bit 6 : always set 1 by dos driver | |
81 | * bit 7 : set 1 for non-ATAPI devices on primary port | |
82 | * (maybe read-ahead and post-write buffer ?) | |
83 | */ | |
84 | ||
85 | static int timings[4]={-1,-1,-1,-1}; /* stores current timing for each timer */ | |
86 | ||
1da177e4 | 87 | /* |
d07616f1 | 88 | * qd65xx_select: |
1da177e4 | 89 | * |
d07616f1 | 90 | * This routine is invoked to prepare for access to a given drive. |
1da177e4 LT |
91 | */ |
92 | ||
d07616f1 | 93 | static void qd65xx_select(ide_drive_t *drive) |
1da177e4 LT |
94 | { |
95 | u8 index = (( (QD_TIMREG(drive)) & 0x80 ) >> 7) | | |
96 | (QD_TIMREG(drive) & 0x02); | |
97 | ||
98 | if (timings[index] != QD_TIMING(drive)) | |
c196567a | 99 | outb(timings[index] = QD_TIMING(drive), QD_TIMREG(drive)); |
1da177e4 LT |
100 | } |
101 | ||
102 | /* | |
103 | * qd6500_compute_timing | |
104 | * | |
105 | * computes the timing value where | |
106 | * lower nibble represents active time, in count of VLB clocks | |
107 | * upper nibble represents recovery time, in count of VLB clocks | |
108 | */ | |
109 | ||
110 | static u8 qd6500_compute_timing (ide_hwif_t *hwif, int active_time, int recovery_time) | |
111 | { | |
30e5ee4d | 112 | int clk = ide_vlb_clk ? ide_vlb_clk : 50; |
ebae41a5 | 113 | u8 act_cyc, rec_cyc; |
1da177e4 | 114 | |
ebae41a5 BZ |
115 | if (clk <= 33) { |
116 | act_cyc = 9 - IDE_IN(active_time * clk / 1000 + 1, 2, 9); | |
117 | rec_cyc = 15 - IDE_IN(recovery_time * clk / 1000 + 1, 0, 15); | |
1da177e4 | 118 | } else { |
ebae41a5 BZ |
119 | act_cyc = 8 - IDE_IN(active_time * clk / 1000 + 1, 1, 8); |
120 | rec_cyc = 18 - IDE_IN(recovery_time * clk / 1000 + 1, 3, 18); | |
1da177e4 LT |
121 | } |
122 | ||
ebae41a5 | 123 | return (rec_cyc << 4) | 0x08 | act_cyc; |
1da177e4 LT |
124 | } |
125 | ||
126 | /* | |
127 | * qd6580_compute_timing | |
128 | * | |
129 | * idem for qd6580 | |
130 | */ | |
131 | ||
132 | static u8 qd6580_compute_timing (int active_time, int recovery_time) | |
133 | { | |
30e5ee4d | 134 | int clk = ide_vlb_clk ? ide_vlb_clk : 50; |
ebae41a5 | 135 | u8 act_cyc, rec_cyc; |
1da177e4 | 136 | |
ebae41a5 BZ |
137 | act_cyc = 17 - IDE_IN(active_time * clk / 1000 + 1, 2, 17); |
138 | rec_cyc = 15 - IDE_IN(recovery_time * clk / 1000 + 1, 2, 15); | |
139 | ||
140 | return (rec_cyc << 4) | act_cyc; | |
1da177e4 LT |
141 | } |
142 | ||
143 | /* | |
144 | * qd_find_disk_type | |
145 | * | |
146 | * tries to find timing from dos driver's table | |
147 | */ | |
148 | ||
149 | static int qd_find_disk_type (ide_drive_t *drive, | |
150 | int *active_time, int *recovery_time) | |
151 | { | |
152 | struct qd65xx_timing_s *p; | |
4dde4492 BZ |
153 | char *m = (char *)&drive->id[ATA_ID_PROD]; |
154 | char model[ATA_ID_PROD_LEN]; | |
1da177e4 | 155 | |
4dde4492 BZ |
156 | if (*m == 0) |
157 | return 0; | |
1da177e4 | 158 | |
4dde4492 BZ |
159 | strncpy(model, m, ATA_ID_PROD_LEN); |
160 | ide_fixstring(model, ATA_ID_PROD_LEN, 1); /* byte-swap */ | |
1da177e4 LT |
161 | |
162 | for (p = qd65xx_timing ; p->offset != -1 ; p++) { | |
163 | if (!strncmp(p->model, model+p->offset, 4)) { | |
164 | printk(KERN_DEBUG "%s: listed !\n", drive->name); | |
165 | *active_time = p->active; | |
166 | *recovery_time = p->recovery; | |
167 | return 1; | |
168 | } | |
169 | } | |
170 | return 0; | |
171 | } | |
172 | ||
1da177e4 LT |
173 | /* |
174 | * qd_set_timing: | |
175 | * | |
d07616f1 | 176 | * records the timing |
1da177e4 LT |
177 | */ |
178 | ||
179 | static void qd_set_timing (ide_drive_t *drive, u8 timing) | |
180 | { | |
1da177e4 LT |
181 | drive->drive_data &= 0xff00; |
182 | drive->drive_data |= timing; | |
1da177e4 LT |
183 | |
184 | printk(KERN_DEBUG "%s: %#x\n", drive->name, timing); | |
185 | } | |
186 | ||
26bcb879 | 187 | static void qd6500_set_pio_mode(ide_drive_t *drive, const u8 pio) |
1da177e4 | 188 | { |
4dde4492 | 189 | u16 *id = drive->id; |
1da177e4 LT |
190 | int active_time = 175; |
191 | int recovery_time = 415; /* worst case values from the dos driver */ | |
192 | ||
26bcb879 BZ |
193 | /* |
194 | * FIXME: use "pio" value | |
195 | */ | |
4dde4492 | 196 | if (!qd_find_disk_type(drive, &active_time, &recovery_time) && |
48fb2688 | 197 | (id[ATA_ID_OLD_PIO_MODES] & 0xff) && (id[ATA_ID_FIELD_VALID] & 2) && |
4dde4492 | 198 | id[ATA_ID_EIDE_PIO] >= 240) { |
1da177e4 | 199 | printk(KERN_INFO "%s: PIO mode%d\n", drive->name, |
48fb2688 | 200 | id[ATA_ID_OLD_PIO_MODES] & 0xff); |
1da177e4 | 201 | active_time = 110; |
4dde4492 | 202 | recovery_time = drive->id[ATA_ID_EIDE_PIO] - 120; |
1da177e4 LT |
203 | } |
204 | ||
898ec223 BZ |
205 | qd_set_timing(drive, qd6500_compute_timing(drive->hwif, |
206 | active_time, recovery_time)); | |
1da177e4 LT |
207 | } |
208 | ||
26bcb879 | 209 | static void qd6580_set_pio_mode(ide_drive_t *drive, const u8 pio) |
1da177e4 | 210 | { |
79472b6e | 211 | ide_hwif_t *hwif = drive->hwif; |
2feecfac | 212 | struct ide_timing *t = ide_timing_find_mode(XFER_PIO_0 + pio); |
7dd00083 | 213 | unsigned int cycle_time; |
1da177e4 LT |
214 | int active_time = 175; |
215 | int recovery_time = 415; /* worst case values from the dos driver */ | |
79472b6e | 216 | u8 base = (hwif->config_data & 0xff00) >> 8; |
1da177e4 LT |
217 | |
218 | if (drive->id && !qd_find_disk_type(drive, &active_time, &recovery_time)) { | |
7dd00083 | 219 | cycle_time = ide_pio_cycle_time(drive, pio); |
1da177e4 LT |
220 | |
221 | switch (pio) { | |
222 | case 0: break; | |
223 | case 3: | |
7dd00083 | 224 | if (cycle_time >= 110) { |
1da177e4 | 225 | active_time = 86; |
7dd00083 | 226 | recovery_time = cycle_time - 102; |
1da177e4 LT |
227 | } else |
228 | printk(KERN_WARNING "%s: Strange recovery time !\n",drive->name); | |
229 | break; | |
230 | case 4: | |
7dd00083 | 231 | if (cycle_time >= 69) { |
1da177e4 | 232 | active_time = 70; |
7dd00083 | 233 | recovery_time = cycle_time - 61; |
1da177e4 LT |
234 | } else |
235 | printk(KERN_WARNING "%s: Strange recovery time !\n",drive->name); | |
236 | break; | |
237 | default: | |
7dd00083 | 238 | if (cycle_time >= 180) { |
1da177e4 | 239 | active_time = 110; |
7dd00083 | 240 | recovery_time = cycle_time - 120; |
1da177e4 | 241 | } else { |
2feecfac | 242 | active_time = t->active; |
7dd00083 | 243 | recovery_time = cycle_time - active_time; |
1da177e4 LT |
244 | } |
245 | } | |
246 | printk(KERN_INFO "%s: PIO mode%d\n", drive->name,pio); | |
247 | } | |
248 | ||
898ec223 | 249 | if (!hwif->channel && drive->media != ide_disk) { |
c196567a | 250 | outb(0x5f, QD_CONTROL_PORT); |
1da177e4 LT |
251 | printk(KERN_WARNING "%s: ATAPI: disabled read-ahead FIFO " |
252 | "and post-write buffer on %s.\n", | |
898ec223 | 253 | drive->name, hwif->name); |
1da177e4 LT |
254 | } |
255 | ||
256 | qd_set_timing(drive, qd6580_compute_timing(active_time, recovery_time)); | |
257 | } | |
258 | ||
259 | /* | |
260 | * qd_testreg | |
261 | * | |
262 | * tests if the given port is a register | |
263 | */ | |
264 | ||
265 | static int __init qd_testreg(int port) | |
266 | { | |
1da177e4 | 267 | unsigned long flags; |
f949820d | 268 | u8 savereg, readreg; |
1da177e4 | 269 | |
c196567a | 270 | local_irq_save(flags); |
1da177e4 LT |
271 | savereg = inb_p(port); |
272 | outb_p(QD_TESTVAL, port); /* safe value */ | |
273 | readreg = inb_p(port); | |
274 | outb(savereg, port); | |
c196567a | 275 | local_irq_restore(flags); |
1da177e4 LT |
276 | |
277 | if (savereg == QD_TESTVAL) { | |
278 | printk(KERN_ERR "Outch ! the probe for qd65xx isn't reliable !\n"); | |
279 | printk(KERN_ERR "Please contact maintainers to tell about your hardware\n"); | |
280 | printk(KERN_ERR "Assuming qd65xx is not present.\n"); | |
281 | return 1; | |
282 | } | |
283 | ||
284 | return (readreg != QD_TESTVAL); | |
285 | } | |
286 | ||
e6d95bd1 | 287 | static void __init qd6500_init_dev(ide_drive_t *drive) |
1f2cf8b0 | 288 | { |
e6d95bd1 | 289 | ide_hwif_t *hwif = drive->hwif; |
79472b6e BZ |
290 | u8 base = (hwif->config_data & 0xff00) >> 8; |
291 | u8 config = QD_CONFIG(hwif); | |
1f2cf8b0 | 292 | |
e6d95bd1 | 293 | drive->drive_data = QD6500_DEF_DATA; |
1f2cf8b0 BZ |
294 | } |
295 | ||
e6d95bd1 | 296 | static void __init qd6580_init_dev(ide_drive_t *drive) |
1f2cf8b0 | 297 | { |
e6d95bd1 | 298 | ide_hwif_t *hwif = drive->hwif; |
1f2cf8b0 | 299 | u16 t1, t2; |
79472b6e BZ |
300 | u8 base = (hwif->config_data & 0xff00) >> 8; |
301 | u8 config = QD_CONFIG(hwif); | |
1f2cf8b0 | 302 | |
79472b6e | 303 | if (hwif->host_flags & IDE_HFLAG_SINGLE) { |
1f2cf8b0 BZ |
304 | t1 = QD6580_DEF_DATA; |
305 | t2 = QD6580_DEF_DATA2; | |
306 | } else | |
307 | t2 = t1 = hwif->channel ? QD6580_DEF_DATA2 : QD6580_DEF_DATA; | |
308 | ||
123995b9 | 309 | drive->drive_data = (drive->dn & 1) ? t2 : t1; |
1da177e4 LT |
310 | } |
311 | ||
ac95beed | 312 | static const struct ide_port_ops qd6500_port_ops = { |
e6d95bd1 | 313 | .init_dev = qd6500_init_dev, |
ac95beed BZ |
314 | .set_pio_mode = qd6500_set_pio_mode, |
315 | .selectproc = qd65xx_select, | |
316 | }; | |
317 | ||
318 | static const struct ide_port_ops qd6580_port_ops = { | |
e6d95bd1 | 319 | .init_dev = qd6580_init_dev, |
ac95beed BZ |
320 | .set_pio_mode = qd6580_set_pio_mode, |
321 | .selectproc = qd65xx_select, | |
322 | }; | |
323 | ||
c413b9b9 | 324 | static const struct ide_port_info qd65xx_port_info __initdata = { |
d92f1a28 | 325 | .name = DRV_NAME, |
c413b9b9 BZ |
326 | .chipset = ide_qd65xx, |
327 | .host_flags = IDE_HFLAG_IO_32BIT | | |
0d28ec7f | 328 | IDE_HFLAG_NO_DMA, |
c413b9b9 BZ |
329 | .pio_mask = ATA_PIO4, |
330 | }; | |
331 | ||
1da177e4 LT |
332 | /* |
333 | * qd_probe: | |
334 | * | |
335 | * looks at the specified baseport, and if qd found, registers & initialises it | |
336 | * return 1 if another qd may be probed | |
337 | */ | |
338 | ||
339 | static int __init qd_probe(int base) | |
340 | { | |
0bfeee7d | 341 | int rc; |
7a2199f3 | 342 | u8 config, unit, control; |
e277f91f | 343 | struct ide_port_info d = qd65xx_port_info; |
1da177e4 | 344 | |
c196567a | 345 | config = inb(QD_CONFIG_PORT); |
1da177e4 LT |
346 | |
347 | if (! ((config & QD_CONFIG_BASEPORT) >> 1 == (base == 0xb0)) ) | |
7daf66dd | 348 | return -ENODEV; |
1da177e4 LT |
349 | |
350 | unit = ! (config & QD_CONFIG_IDE_BASEPORT); | |
351 | ||
e277f91f BZ |
352 | if (unit) |
353 | d.host_flags |= IDE_HFLAG_QD_2ND_PORT; | |
354 | ||
7a2199f3 BZ |
355 | switch (config & 0xf0) { |
356 | case QD_CONFIG_QD6500: | |
7daf66dd BZ |
357 | if (qd_testreg(base)) |
358 | return -ENODEV; /* bad register */ | |
1da177e4 | 359 | |
1da177e4 LT |
360 | if (config & QD_CONFIG_DISABLED) { |
361 | printk(KERN_WARNING "qd6500 is disabled !\n"); | |
7daf66dd | 362 | return -ENODEV; |
1da177e4 LT |
363 | } |
364 | ||
e277f91f BZ |
365 | printk(KERN_NOTICE "qd6500 at %#x\n", base); |
366 | printk(KERN_DEBUG "qd6500: config=%#x, ID3=%u\n", | |
367 | config, QD_ID3); | |
368 | ||
ac95beed | 369 | d.port_ops = &qd6500_port_ops; |
79472b6e | 370 | d.host_flags |= IDE_HFLAG_SINGLE; |
7a2199f3 BZ |
371 | break; |
372 | case QD_CONFIG_QD6580_A: | |
373 | case QD_CONFIG_QD6580_B: | |
7daf66dd BZ |
374 | if (qd_testreg(base) || qd_testreg(base + 0x02)) |
375 | return -ENODEV; /* bad registers */ | |
1da177e4 | 376 | |
c196567a | 377 | control = inb(QD_CONTROL_PORT); |
1da177e4 LT |
378 | |
379 | printk(KERN_NOTICE "qd6580 at %#x\n", base); | |
380 | printk(KERN_DEBUG "qd6580: config=%#x, control=%#x, ID3=%u\n", | |
381 | config, control, QD_ID3); | |
382 | ||
788d6697 BZ |
383 | outb(QD_DEF_CONTR, QD_CONTROL_PORT); |
384 | ||
ac95beed | 385 | d.port_ops = &qd6580_port_ops; |
7a2199f3 | 386 | if (control & QD_CONTR_SEC_DISABLED) |
79472b6e BZ |
387 | d.host_flags |= IDE_HFLAG_SINGLE; |
388 | ||
7a2199f3 BZ |
389 | printk(KERN_INFO "qd6580: %s IDE board\n", |
390 | (control & QD_CONTR_SEC_DISABLED) ? "single" : "dual"); | |
391 | break; | |
392 | default: | |
393 | return -ENODEV; | |
394 | } | |
26bcb879 | 395 | |
7a2199f3 | 396 | rc = ide_legacy_device_add(&d, (base << 8) | config); |
e277f91f | 397 | |
7a2199f3 BZ |
398 | if (d.host_flags & IDE_HFLAG_SINGLE) |
399 | return (rc == 0) ? 1 : rc; | |
1da177e4 | 400 | |
7a2199f3 | 401 | return rc; |
1da177e4 LT |
402 | } |
403 | ||
ef87f8d0 | 404 | static int probe_qd65xx; |
84913882 BZ |
405 | |
406 | module_param_named(probe, probe_qd65xx, bool, 0); | |
407 | MODULE_PARM_DESC(probe, "probe for QD65xx chipsets"); | |
408 | ||
ade2daf9 | 409 | static int __init qd65xx_init(void) |
1da177e4 | 410 | { |
7daf66dd BZ |
411 | int rc1, rc2 = -ENODEV; |
412 | ||
84913882 BZ |
413 | if (probe_qd65xx == 0) |
414 | return -ENODEV; | |
415 | ||
7daf66dd BZ |
416 | rc1 = qd_probe(0x30); |
417 | if (rc1) | |
418 | rc2 = qd_probe(0xb0); | |
419 | ||
420 | if (rc1 < 0 && rc2 < 0) | |
1da177e4 | 421 | return -ENODEV; |
7daf66dd | 422 | |
1da177e4 LT |
423 | return 0; |
424 | } | |
425 | ||
1da177e4 | 426 | module_init(qd65xx_init); |
1da177e4 LT |
427 | |
428 | MODULE_AUTHOR("Samuel Thibault"); | |
429 | MODULE_DESCRIPTION("support of qd65xx vlb ide chipset"); | |
430 | MODULE_LICENSE("GPL"); |