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 | * | |
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" | |
b6209a90 BZ |
17 | * To enable tuning, use "hda=autotune hdb=autotune" |
18 | * To enable 2nd channel tuning (qd6580 only), use "hdc=autotune hdd=autotune" | |
1da177e4 LT |
19 | */ |
20 | ||
21 | /* | |
22 | * Rewritten from the work of Colten Edwards <pje120@cs.usask.ca> by | |
23 | * Samuel Thibault <samuel.thibault@fnac.net> | |
24 | */ | |
25 | ||
1da177e4 | 26 | #include <linux/module.h> |
1da177e4 LT |
27 | #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 | ||
88 | static int timings[4]={-1,-1,-1,-1}; /* stores current timing for each timer */ | |
89 | ||
1da177e4 | 90 | /* |
d07616f1 | 91 | * qd65xx_select: |
1da177e4 | 92 | * |
d07616f1 | 93 | * This routine is invoked to prepare for access to a given drive. |
1da177e4 LT |
94 | */ |
95 | ||
d07616f1 | 96 | static void qd65xx_select(ide_drive_t *drive) |
1da177e4 LT |
97 | { |
98 | u8 index = (( (QD_TIMREG(drive)) & 0x80 ) >> 7) | | |
99 | (QD_TIMREG(drive) & 0x02); | |
100 | ||
101 | if (timings[index] != QD_TIMING(drive)) | |
c196567a | 102 | outb(timings[index] = QD_TIMING(drive), QD_TIMREG(drive)); |
1da177e4 LT |
103 | } |
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 | ||
113 | static 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 | ||
134 | static 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 | ||
148 | static 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 | ||
1da177e4 LT |
170 | /* |
171 | * qd_set_timing: | |
172 | * | |
d07616f1 | 173 | * records the timing |
1da177e4 LT |
174 | */ |
175 | ||
176 | static void qd_set_timing (ide_drive_t *drive, u8 timing) | |
177 | { | |
1da177e4 LT |
178 | drive->drive_data &= 0xff00; |
179 | drive->drive_data |= timing; | |
1da177e4 LT |
180 | |
181 | printk(KERN_DEBUG "%s: %#x\n", drive->name, timing); | |
182 | } | |
183 | ||
26bcb879 | 184 | static void qd6500_set_pio_mode(ide_drive_t *drive, const u8 pio) |
1da177e4 LT |
185 | { |
186 | int active_time = 175; | |
187 | int recovery_time = 415; /* worst case values from the dos driver */ | |
188 | ||
26bcb879 BZ |
189 | /* |
190 | * FIXME: use "pio" value | |
191 | */ | |
1da177e4 LT |
192 | if (drive->id && !qd_find_disk_type(drive, &active_time, &recovery_time) |
193 | && drive->id->tPIO && (drive->id->field_valid & 0x02) | |
194 | && drive->id->eide_pio >= 240) { | |
195 | ||
196 | printk(KERN_INFO "%s: PIO mode%d\n", drive->name, | |
197 | drive->id->tPIO); | |
198 | active_time = 110; | |
199 | recovery_time = drive->id->eide_pio - 120; | |
200 | } | |
201 | ||
202 | qd_set_timing(drive, qd6500_compute_timing(HWIF(drive), active_time, recovery_time)); | |
203 | } | |
204 | ||
26bcb879 | 205 | static void qd6580_set_pio_mode(ide_drive_t *drive, const u8 pio) |
1da177e4 | 206 | { |
79472b6e | 207 | ide_hwif_t *hwif = drive->hwif; |
7dd00083 | 208 | unsigned int cycle_time; |
1da177e4 LT |
209 | int active_time = 175; |
210 | int recovery_time = 415; /* worst case values from the dos driver */ | |
79472b6e | 211 | u8 base = (hwif->config_data & 0xff00) >> 8; |
1da177e4 LT |
212 | |
213 | if (drive->id && !qd_find_disk_type(drive, &active_time, &recovery_time)) { | |
7dd00083 | 214 | cycle_time = ide_pio_cycle_time(drive, pio); |
1da177e4 LT |
215 | |
216 | switch (pio) { | |
217 | case 0: break; | |
218 | case 3: | |
7dd00083 | 219 | if (cycle_time >= 110) { |
1da177e4 | 220 | active_time = 86; |
7dd00083 | 221 | recovery_time = cycle_time - 102; |
1da177e4 LT |
222 | } else |
223 | printk(KERN_WARNING "%s: Strange recovery time !\n",drive->name); | |
224 | break; | |
225 | case 4: | |
7dd00083 | 226 | if (cycle_time >= 69) { |
1da177e4 | 227 | active_time = 70; |
7dd00083 | 228 | recovery_time = cycle_time - 61; |
1da177e4 LT |
229 | } else |
230 | printk(KERN_WARNING "%s: Strange recovery time !\n",drive->name); | |
231 | break; | |
232 | default: | |
7dd00083 | 233 | if (cycle_time >= 180) { |
1da177e4 | 234 | active_time = 110; |
7dd00083 | 235 | recovery_time = cycle_time - 120; |
1da177e4 LT |
236 | } else { |
237 | active_time = ide_pio_timings[pio].active_time; | |
7dd00083 | 238 | recovery_time = cycle_time - active_time; |
1da177e4 LT |
239 | } |
240 | } | |
241 | printk(KERN_INFO "%s: PIO mode%d\n", drive->name,pio); | |
242 | } | |
243 | ||
244 | if (!HWIF(drive)->channel && drive->media != ide_disk) { | |
c196567a | 245 | outb(0x5f, QD_CONTROL_PORT); |
1da177e4 LT |
246 | printk(KERN_WARNING "%s: ATAPI: disabled read-ahead FIFO " |
247 | "and post-write buffer on %s.\n", | |
248 | drive->name, HWIF(drive)->name); | |
249 | } | |
250 | ||
251 | qd_set_timing(drive, qd6580_compute_timing(active_time, recovery_time)); | |
252 | } | |
253 | ||
254 | /* | |
255 | * qd_testreg | |
256 | * | |
257 | * tests if the given port is a register | |
258 | */ | |
259 | ||
260 | static int __init qd_testreg(int port) | |
261 | { | |
1da177e4 | 262 | unsigned long flags; |
f949820d | 263 | u8 savereg, readreg; |
1da177e4 | 264 | |
c196567a | 265 | local_irq_save(flags); |
1da177e4 LT |
266 | savereg = inb_p(port); |
267 | outb_p(QD_TESTVAL, port); /* safe value */ | |
268 | readreg = inb_p(port); | |
269 | outb(savereg, port); | |
c196567a | 270 | local_irq_restore(flags); |
1da177e4 LT |
271 | |
272 | if (savereg == QD_TESTVAL) { | |
273 | printk(KERN_ERR "Outch ! the probe for qd65xx isn't reliable !\n"); | |
274 | printk(KERN_ERR "Please contact maintainers to tell about your hardware\n"); | |
275 | printk(KERN_ERR "Assuming qd65xx is not present.\n"); | |
276 | return 1; | |
277 | } | |
278 | ||
279 | return (readreg != QD_TESTVAL); | |
280 | } | |
281 | ||
1f2cf8b0 BZ |
282 | static void __init qd6500_port_init_devs(ide_hwif_t *hwif) |
283 | { | |
79472b6e BZ |
284 | u8 base = (hwif->config_data & 0xff00) >> 8; |
285 | u8 config = QD_CONFIG(hwif); | |
1f2cf8b0 BZ |
286 | |
287 | hwif->drives[0].drive_data = QD6500_DEF_DATA; | |
288 | hwif->drives[1].drive_data = QD6500_DEF_DATA; | |
289 | } | |
290 | ||
291 | static void __init qd6580_port_init_devs(ide_hwif_t *hwif) | |
292 | { | |
293 | u16 t1, t2; | |
79472b6e BZ |
294 | u8 base = (hwif->config_data & 0xff00) >> 8; |
295 | u8 config = QD_CONFIG(hwif); | |
1f2cf8b0 | 296 | |
79472b6e | 297 | if (hwif->host_flags & IDE_HFLAG_SINGLE) { |
1f2cf8b0 BZ |
298 | t1 = QD6580_DEF_DATA; |
299 | t2 = QD6580_DEF_DATA2; | |
300 | } else | |
301 | t2 = t1 = hwif->channel ? QD6580_DEF_DATA2 : QD6580_DEF_DATA; | |
302 | ||
303 | hwif->drives[0].drive_data = t1; | |
304 | hwif->drives[1].drive_data = t2; | |
1da177e4 LT |
305 | } |
306 | ||
ac95beed BZ |
307 | static const struct ide_port_ops qd6500_port_ops = { |
308 | .port_init_devs = qd6500_port_init_devs, | |
309 | .set_pio_mode = qd6500_set_pio_mode, | |
310 | .selectproc = qd65xx_select, | |
311 | }; | |
312 | ||
313 | static const struct ide_port_ops qd6580_port_ops = { | |
314 | .port_init_devs = qd6580_port_init_devs, | |
315 | .set_pio_mode = qd6580_set_pio_mode, | |
316 | .selectproc = qd65xx_select, | |
317 | }; | |
318 | ||
c413b9b9 BZ |
319 | static const struct ide_port_info qd65xx_port_info __initdata = { |
320 | .chipset = ide_qd65xx, | |
321 | .host_flags = IDE_HFLAG_IO_32BIT | | |
322 | IDE_HFLAG_NO_DMA | | |
323 | IDE_HFLAG_NO_AUTOTUNE, | |
324 | .pio_mask = ATA_PIO4, | |
325 | }; | |
326 | ||
1da177e4 LT |
327 | /* |
328 | * qd_probe: | |
329 | * | |
330 | * looks at the specified baseport, and if qd found, registers & initialises it | |
331 | * return 1 if another qd may be probed | |
332 | */ | |
333 | ||
334 | static int __init qd_probe(int base) | |
335 | { | |
0bfeee7d | 336 | int rc; |
7a2199f3 | 337 | u8 config, unit, control; |
e277f91f | 338 | struct ide_port_info d = qd65xx_port_info; |
1da177e4 | 339 | |
c196567a | 340 | config = inb(QD_CONFIG_PORT); |
1da177e4 LT |
341 | |
342 | if (! ((config & QD_CONFIG_BASEPORT) >> 1 == (base == 0xb0)) ) | |
7daf66dd | 343 | return -ENODEV; |
1da177e4 LT |
344 | |
345 | unit = ! (config & QD_CONFIG_IDE_BASEPORT); | |
346 | ||
e277f91f BZ |
347 | if (unit) |
348 | d.host_flags |= IDE_HFLAG_QD_2ND_PORT; | |
349 | ||
7a2199f3 BZ |
350 | switch (config & 0xf0) { |
351 | case QD_CONFIG_QD6500: | |
7daf66dd BZ |
352 | if (qd_testreg(base)) |
353 | return -ENODEV; /* bad register */ | |
1da177e4 | 354 | |
1da177e4 LT |
355 | if (config & QD_CONFIG_DISABLED) { |
356 | printk(KERN_WARNING "qd6500 is disabled !\n"); | |
7daf66dd | 357 | return -ENODEV; |
1da177e4 LT |
358 | } |
359 | ||
e277f91f BZ |
360 | printk(KERN_NOTICE "qd6500 at %#x\n", base); |
361 | printk(KERN_DEBUG "qd6500: config=%#x, ID3=%u\n", | |
362 | config, QD_ID3); | |
363 | ||
ac95beed | 364 | d.port_ops = &qd6500_port_ops; |
79472b6e | 365 | d.host_flags |= IDE_HFLAG_SINGLE; |
7a2199f3 BZ |
366 | break; |
367 | case QD_CONFIG_QD6580_A: | |
368 | case QD_CONFIG_QD6580_B: | |
7daf66dd BZ |
369 | if (qd_testreg(base) || qd_testreg(base + 0x02)) |
370 | return -ENODEV; /* bad registers */ | |
1da177e4 | 371 | |
c196567a | 372 | control = inb(QD_CONTROL_PORT); |
1da177e4 LT |
373 | |
374 | printk(KERN_NOTICE "qd6580 at %#x\n", base); | |
375 | printk(KERN_DEBUG "qd6580: config=%#x, control=%#x, ID3=%u\n", | |
376 | config, control, QD_ID3); | |
377 | ||
788d6697 BZ |
378 | outb(QD_DEF_CONTR, QD_CONTROL_PORT); |
379 | ||
ac95beed | 380 | d.port_ops = &qd6580_port_ops; |
7a2199f3 | 381 | if (control & QD_CONTR_SEC_DISABLED) |
79472b6e BZ |
382 | d.host_flags |= IDE_HFLAG_SINGLE; |
383 | ||
7a2199f3 BZ |
384 | printk(KERN_INFO "qd6580: %s IDE board\n", |
385 | (control & QD_CONTR_SEC_DISABLED) ? "single" : "dual"); | |
386 | break; | |
387 | default: | |
388 | return -ENODEV; | |
389 | } | |
26bcb879 | 390 | |
7a2199f3 | 391 | rc = ide_legacy_device_add(&d, (base << 8) | config); |
e277f91f | 392 | |
7a2199f3 BZ |
393 | if (d.host_flags & IDE_HFLAG_SINGLE) |
394 | return (rc == 0) ? 1 : rc; | |
1da177e4 | 395 | |
7a2199f3 | 396 | return rc; |
1da177e4 LT |
397 | } |
398 | ||
84913882 BZ |
399 | int probe_qd65xx = 0; |
400 | ||
401 | module_param_named(probe, probe_qd65xx, bool, 0); | |
402 | MODULE_PARM_DESC(probe, "probe for QD65xx chipsets"); | |
403 | ||
ade2daf9 | 404 | static int __init qd65xx_init(void) |
1da177e4 | 405 | { |
7daf66dd BZ |
406 | int rc1, rc2 = -ENODEV; |
407 | ||
84913882 BZ |
408 | if (probe_qd65xx == 0) |
409 | return -ENODEV; | |
410 | ||
7daf66dd BZ |
411 | rc1 = qd_probe(0x30); |
412 | if (rc1) | |
413 | rc2 = qd_probe(0xb0); | |
414 | ||
415 | if (rc1 < 0 && rc2 < 0) | |
1da177e4 | 416 | return -ENODEV; |
7daf66dd | 417 | |
1da177e4 LT |
418 | return 0; |
419 | } | |
420 | ||
1da177e4 | 421 | module_init(qd65xx_init); |
1da177e4 LT |
422 | |
423 | MODULE_AUTHOR("Samuel Thibault"); | |
424 | MODULE_DESCRIPTION("support of qd65xx vlb ide chipset"); | |
425 | MODULE_LICENSE("GPL"); |