diff options
author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-10-21 14:57:23 -0400 |
---|---|---|
committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-10-21 14:57:23 -0400 |
commit | 2bfba3c444fe8b2ab1c38112a89d8f03b61136ca (patch) | |
tree | 17580eee63d868c9d6b97a6bc956a08f25631532 /drivers/ide/qd65xx.c | |
parent | 2515ddc6db8eb49a79f0fe5e67ff09ac7c81eab4 (diff) |
ide: remove useless subdirs from drivers/ide/
Suggested-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/qd65xx.c')
-rw-r--r-- | drivers/ide/qd65xx.c | 429 |
1 files changed, 429 insertions, 0 deletions
diff --git a/drivers/ide/qd65xx.c b/drivers/ide/qd65xx.c new file mode 100644 index 000000000000..bc27c7aba936 --- /dev/null +++ b/drivers/ide/qd65xx.c | |||
@@ -0,0 +1,429 @@ | |||
1 | /* | ||
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 | * To activate controller support, use "ide0=qd65xx" | ||
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 | |||
22 | #include <linux/module.h> | ||
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> | ||
30 | #include <linux/ide.h> | ||
31 | #include <linux/init.h> | ||
32 | #include <asm/system.h> | ||
33 | #include <asm/io.h> | ||
34 | |||
35 | #define DRV_NAME "qd65xx" | ||
36 | |||
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 | |||
87 | /* | ||
88 | * qd65xx_select: | ||
89 | * | ||
90 | * This routine is invoked to prepare for access to a given drive. | ||
91 | */ | ||
92 | |||
93 | static void qd65xx_select(ide_drive_t *drive) | ||
94 | { | ||
95 | u8 index = (( (QD_TIMREG(drive)) & 0x80 ) >> 7) | | ||
96 | (QD_TIMREG(drive) & 0x02); | ||
97 | |||
98 | if (timings[index] != QD_TIMING(drive)) | ||
99 | outb(timings[index] = QD_TIMING(drive), QD_TIMREG(drive)); | ||
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 | { | ||
112 | int clk = ide_vlb_clk ? ide_vlb_clk : 50; | ||
113 | u8 act_cyc, rec_cyc; | ||
114 | |||
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); | ||
118 | } else { | ||
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); | ||
121 | } | ||
122 | |||
123 | return (rec_cyc << 4) | 0x08 | act_cyc; | ||
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 | { | ||
134 | int clk = ide_vlb_clk ? ide_vlb_clk : 50; | ||
135 | u8 act_cyc, rec_cyc; | ||
136 | |||
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; | ||
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; | ||
153 | char *m = (char *)&drive->id[ATA_ID_PROD]; | ||
154 | char model[ATA_ID_PROD_LEN]; | ||
155 | |||
156 | if (*m == 0) | ||
157 | return 0; | ||
158 | |||
159 | strncpy(model, m, ATA_ID_PROD_LEN); | ||
160 | ide_fixstring(model, ATA_ID_PROD_LEN, 1); /* byte-swap */ | ||
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 | |||
173 | /* | ||
174 | * qd_set_timing: | ||
175 | * | ||
176 | * records the timing | ||
177 | */ | ||
178 | |||
179 | static void qd_set_timing (ide_drive_t *drive, u8 timing) | ||
180 | { | ||
181 | drive->drive_data &= 0xff00; | ||
182 | drive->drive_data |= timing; | ||
183 | |||
184 | printk(KERN_DEBUG "%s: %#x\n", drive->name, timing); | ||
185 | } | ||
186 | |||
187 | static void qd6500_set_pio_mode(ide_drive_t *drive, const u8 pio) | ||
188 | { | ||
189 | u16 *id = drive->id; | ||
190 | int active_time = 175; | ||
191 | int recovery_time = 415; /* worst case values from the dos driver */ | ||
192 | |||
193 | /* | ||
194 | * FIXME: use "pio" value | ||
195 | */ | ||
196 | if (!qd_find_disk_type(drive, &active_time, &recovery_time) && | ||
197 | (id[ATA_ID_OLD_PIO_MODES] & 0xff) && (id[ATA_ID_FIELD_VALID] & 2) && | ||
198 | id[ATA_ID_EIDE_PIO] >= 240) { | ||
199 | printk(KERN_INFO "%s: PIO mode%d\n", drive->name, | ||
200 | id[ATA_ID_OLD_PIO_MODES] & 0xff); | ||
201 | active_time = 110; | ||
202 | recovery_time = drive->id[ATA_ID_EIDE_PIO] - 120; | ||
203 | } | ||
204 | |||
205 | qd_set_timing(drive, qd6500_compute_timing(HWIF(drive), active_time, recovery_time)); | ||
206 | } | ||
207 | |||
208 | static void qd6580_set_pio_mode(ide_drive_t *drive, const u8 pio) | ||
209 | { | ||
210 | ide_hwif_t *hwif = drive->hwif; | ||
211 | struct ide_timing *t = ide_timing_find_mode(XFER_PIO_0 + pio); | ||
212 | unsigned int cycle_time; | ||
213 | int active_time = 175; | ||
214 | int recovery_time = 415; /* worst case values from the dos driver */ | ||
215 | u8 base = (hwif->config_data & 0xff00) >> 8; | ||
216 | |||
217 | if (drive->id && !qd_find_disk_type(drive, &active_time, &recovery_time)) { | ||
218 | cycle_time = ide_pio_cycle_time(drive, pio); | ||
219 | |||
220 | switch (pio) { | ||
221 | case 0: break; | ||
222 | case 3: | ||
223 | if (cycle_time >= 110) { | ||
224 | active_time = 86; | ||
225 | recovery_time = cycle_time - 102; | ||
226 | } else | ||
227 | printk(KERN_WARNING "%s: Strange recovery time !\n",drive->name); | ||
228 | break; | ||
229 | case 4: | ||
230 | if (cycle_time >= 69) { | ||
231 | active_time = 70; | ||
232 | recovery_time = cycle_time - 61; | ||
233 | } else | ||
234 | printk(KERN_WARNING "%s: Strange recovery time !\n",drive->name); | ||
235 | break; | ||
236 | default: | ||
237 | if (cycle_time >= 180) { | ||
238 | active_time = 110; | ||
239 | recovery_time = cycle_time - 120; | ||
240 | } else { | ||
241 | active_time = t->active; | ||
242 | recovery_time = cycle_time - active_time; | ||
243 | } | ||
244 | } | ||
245 | printk(KERN_INFO "%s: PIO mode%d\n", drive->name,pio); | ||
246 | } | ||
247 | |||
248 | if (!HWIF(drive)->channel && drive->media != ide_disk) { | ||
249 | outb(0x5f, QD_CONTROL_PORT); | ||
250 | printk(KERN_WARNING "%s: ATAPI: disabled read-ahead FIFO " | ||
251 | "and post-write buffer on %s.\n", | ||
252 | drive->name, HWIF(drive)->name); | ||
253 | } | ||
254 | |||
255 | qd_set_timing(drive, qd6580_compute_timing(active_time, recovery_time)); | ||
256 | } | ||
257 | |||
258 | /* | ||
259 | * qd_testreg | ||
260 | * | ||
261 | * tests if the given port is a register | ||
262 | */ | ||
263 | |||
264 | static int __init qd_testreg(int port) | ||
265 | { | ||
266 | unsigned long flags; | ||
267 | u8 savereg, readreg; | ||
268 | |||
269 | local_irq_save(flags); | ||
270 | savereg = inb_p(port); | ||
271 | outb_p(QD_TESTVAL, port); /* safe value */ | ||
272 | readreg = inb_p(port); | ||
273 | outb(savereg, port); | ||
274 | local_irq_restore(flags); | ||
275 | |||
276 | if (savereg == QD_TESTVAL) { | ||
277 | printk(KERN_ERR "Outch ! the probe for qd65xx isn't reliable !\n"); | ||
278 | printk(KERN_ERR "Please contact maintainers to tell about your hardware\n"); | ||
279 | printk(KERN_ERR "Assuming qd65xx is not present.\n"); | ||
280 | return 1; | ||
281 | } | ||
282 | |||
283 | return (readreg != QD_TESTVAL); | ||
284 | } | ||
285 | |||
286 | static void __init qd6500_init_dev(ide_drive_t *drive) | ||
287 | { | ||
288 | ide_hwif_t *hwif = drive->hwif; | ||
289 | u8 base = (hwif->config_data & 0xff00) >> 8; | ||
290 | u8 config = QD_CONFIG(hwif); | ||
291 | |||
292 | drive->drive_data = QD6500_DEF_DATA; | ||
293 | } | ||
294 | |||
295 | static void __init qd6580_init_dev(ide_drive_t *drive) | ||
296 | { | ||
297 | ide_hwif_t *hwif = drive->hwif; | ||
298 | u16 t1, t2; | ||
299 | u8 base = (hwif->config_data & 0xff00) >> 8; | ||
300 | u8 config = QD_CONFIG(hwif); | ||
301 | |||
302 | if (hwif->host_flags & IDE_HFLAG_SINGLE) { | ||
303 | t1 = QD6580_DEF_DATA; | ||
304 | t2 = QD6580_DEF_DATA2; | ||
305 | } else | ||
306 | t2 = t1 = hwif->channel ? QD6580_DEF_DATA2 : QD6580_DEF_DATA; | ||
307 | |||
308 | drive->drive_data = (drive->dn & 1) ? t2 : t1; | ||
309 | } | ||
310 | |||
311 | static const struct ide_port_ops qd6500_port_ops = { | ||
312 | .init_dev = qd6500_init_dev, | ||
313 | .set_pio_mode = qd6500_set_pio_mode, | ||
314 | .selectproc = qd65xx_select, | ||
315 | }; | ||
316 | |||
317 | static const struct ide_port_ops qd6580_port_ops = { | ||
318 | .init_dev = qd6580_init_dev, | ||
319 | .set_pio_mode = qd6580_set_pio_mode, | ||
320 | .selectproc = qd65xx_select, | ||
321 | }; | ||
322 | |||
323 | static const struct ide_port_info qd65xx_port_info __initdata = { | ||
324 | .name = DRV_NAME, | ||
325 | .chipset = ide_qd65xx, | ||
326 | .host_flags = IDE_HFLAG_IO_32BIT | | ||
327 | IDE_HFLAG_NO_DMA, | ||
328 | .pio_mask = ATA_PIO4, | ||
329 | }; | ||
330 | |||
331 | /* | ||
332 | * qd_probe: | ||
333 | * | ||
334 | * looks at the specified baseport, and if qd found, registers & initialises it | ||
335 | * return 1 if another qd may be probed | ||
336 | */ | ||
337 | |||
338 | static int __init qd_probe(int base) | ||
339 | { | ||
340 | int rc; | ||
341 | u8 config, unit, control; | ||
342 | struct ide_port_info d = qd65xx_port_info; | ||
343 | |||
344 | config = inb(QD_CONFIG_PORT); | ||
345 | |||
346 | if (! ((config & QD_CONFIG_BASEPORT) >> 1 == (base == 0xb0)) ) | ||
347 | return -ENODEV; | ||
348 | |||
349 | unit = ! (config & QD_CONFIG_IDE_BASEPORT); | ||
350 | |||
351 | if (unit) | ||
352 | d.host_flags |= IDE_HFLAG_QD_2ND_PORT; | ||
353 | |||
354 | switch (config & 0xf0) { | ||
355 | case QD_CONFIG_QD6500: | ||
356 | if (qd_testreg(base)) | ||
357 | return -ENODEV; /* bad register */ | ||
358 | |||
359 | if (config & QD_CONFIG_DISABLED) { | ||
360 | printk(KERN_WARNING "qd6500 is disabled !\n"); | ||
361 | return -ENODEV; | ||
362 | } | ||
363 | |||
364 | printk(KERN_NOTICE "qd6500 at %#x\n", base); | ||
365 | printk(KERN_DEBUG "qd6500: config=%#x, ID3=%u\n", | ||
366 | config, QD_ID3); | ||
367 | |||
368 | d.port_ops = &qd6500_port_ops; | ||
369 | d.host_flags |= IDE_HFLAG_SINGLE; | ||
370 | break; | ||
371 | case QD_CONFIG_QD6580_A: | ||
372 | case QD_CONFIG_QD6580_B: | ||
373 | if (qd_testreg(base) || qd_testreg(base + 0x02)) | ||
374 | return -ENODEV; /* bad registers */ | ||
375 | |||
376 | control = inb(QD_CONTROL_PORT); | ||
377 | |||
378 | printk(KERN_NOTICE "qd6580 at %#x\n", base); | ||
379 | printk(KERN_DEBUG "qd6580: config=%#x, control=%#x, ID3=%u\n", | ||
380 | config, control, QD_ID3); | ||
381 | |||
382 | outb(QD_DEF_CONTR, QD_CONTROL_PORT); | ||
383 | |||
384 | d.port_ops = &qd6580_port_ops; | ||
385 | if (control & QD_CONTR_SEC_DISABLED) | ||
386 | d.host_flags |= IDE_HFLAG_SINGLE; | ||
387 | |||
388 | printk(KERN_INFO "qd6580: %s IDE board\n", | ||
389 | (control & QD_CONTR_SEC_DISABLED) ? "single" : "dual"); | ||
390 | break; | ||
391 | default: | ||
392 | return -ENODEV; | ||
393 | } | ||
394 | |||
395 | rc = ide_legacy_device_add(&d, (base << 8) | config); | ||
396 | |||
397 | if (d.host_flags & IDE_HFLAG_SINGLE) | ||
398 | return (rc == 0) ? 1 : rc; | ||
399 | |||
400 | return rc; | ||
401 | } | ||
402 | |||
403 | static int probe_qd65xx; | ||
404 | |||
405 | module_param_named(probe, probe_qd65xx, bool, 0); | ||
406 | MODULE_PARM_DESC(probe, "probe for QD65xx chipsets"); | ||
407 | |||
408 | static int __init qd65xx_init(void) | ||
409 | { | ||
410 | int rc1, rc2 = -ENODEV; | ||
411 | |||
412 | if (probe_qd65xx == 0) | ||
413 | return -ENODEV; | ||
414 | |||
415 | rc1 = qd_probe(0x30); | ||
416 | if (rc1) | ||
417 | rc2 = qd_probe(0xb0); | ||
418 | |||
419 | if (rc1 < 0 && rc2 < 0) | ||
420 | return -ENODEV; | ||
421 | |||
422 | return 0; | ||
423 | } | ||
424 | |||
425 | module_init(qd65xx_init); | ||
426 | |||
427 | MODULE_AUTHOR("Samuel Thibault"); | ||
428 | MODULE_DESCRIPTION("support of qd65xx vlb ide chipset"); | ||
429 | MODULE_LICENSE("GPL"); | ||