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pata_amd: Note in the module description it handles Nvidia
[linux-2.6/zen-sources.git] / drivers / ata / pata_amd.c
blobea567e2b1703ffc4b79e09e47bce5c68082f535e
1 /*
2 * pata_amd.c - AMD PATA for new ATA layer
3 * (C) 2005-2006 Red Hat Inc
4 * Alan Cox <alan@redhat.com>
5 *
6 * Based on pata-sil680. Errata information is taken from data sheets
7 * and the amd74xx.c driver by Vojtech Pavlik. Nvidia SATA devices are
8 * claimed by sata-nv.c.
9 *
10 * TODO:
11 * Variable system clock when/if it makes sense
12 * Power management on ports
13 *
14 *
15 * Documentation publically available.
16 */
17
18 #include <linux/kernel.h>
19 #include <linux/module.h>
20 #include <linux/pci.h>
21 #include <linux/init.h>
22 #include <linux/blkdev.h>
23 #include <linux/delay.h>
24 #include <scsi/scsi_host.h>
25 #include <linux/libata.h>
26
27 #define DRV_NAME "pata_amd"
28 #define DRV_VERSION "0.3.10"
29
30 /**
31 * timing_setup - shared timing computation and load
32 * @ap: ATA port being set up
33 * @adev: drive being configured
34 * @offset: port offset
35 * @speed: target speed
36 * @clock: clock multiplier (number of times 33MHz for this part)
37 *
38 * Perform the actual timing set up for Nvidia or AMD PATA devices.
39 * The actual devices vary so they all call into this helper function
40 * providing the clock multipler and offset (because AMD and Nvidia put
41 * the ports at different locations).
42 */
43
44 static void timing_setup(struct ata_port *ap, struct ata_device *adev, int offset, int speed, int clock)
45 {
46 static const unsigned char amd_cyc2udma[] = {
47 6, 6, 5, 4, 0, 1, 1, 2, 2, 3, 3, 3, 3, 3, 3, 7
48 };
49
50 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
51 struct ata_device *peer = ata_dev_pair(adev);
52 int dn = ap->port_no * 2 + adev->devno;
53 struct ata_timing at, apeer;
54 int T, UT;
55 const int amd_clock = 33333; /* KHz. */
56 u8 t;
57
58 T = 1000000000 / amd_clock;
59 UT = T / min_t(int, max_t(int, clock, 1), 2);
60
61 if (ata_timing_compute(adev, speed, &at, T, UT) < 0) {
62 dev_printk(KERN_ERR, &pdev->dev, "unknown mode %d.\n", speed);
63 return;
64 }
65
66 if (peer) {
67 /* This may be over conservative */
68 if (peer->dma_mode) {
69 ata_timing_compute(peer, peer->dma_mode, &apeer, T, UT);
70 ata_timing_merge(&apeer, &at, &at, ATA_TIMING_8BIT);
71 }
72 ata_timing_compute(peer, peer->pio_mode, &apeer, T, UT);
73 ata_timing_merge(&apeer, &at, &at, ATA_TIMING_8BIT);
74 }
75
76 if (speed == XFER_UDMA_5 && amd_clock <= 33333) at.udma = 1;
77 if (speed == XFER_UDMA_6 && amd_clock <= 33333) at.udma = 15;
78
79 /*
80 * Now do the setup work
81 */
82
83 /* Configure the address set up timing */
84 pci_read_config_byte(pdev, offset + 0x0C, &t);
85 t = (t & ~(3 << ((3 - dn) << 1))) | ((FIT(at.setup, 1, 4) - 1) << ((3 - dn) << 1));
86 pci_write_config_byte(pdev, offset + 0x0C , t);
87
88 /* Configure the 8bit I/O timing */
89 pci_write_config_byte(pdev, offset + 0x0E + (1 - (dn >> 1)),
90 ((FIT(at.act8b, 1, 16) - 1) << 4) | (FIT(at.rec8b, 1, 16) - 1));
91
92 /* Drive timing */
93 pci_write_config_byte(pdev, offset + 0x08 + (3 - dn),
94 ((FIT(at.active, 1, 16) - 1) << 4) | (FIT(at.recover, 1, 16) - 1));
95
96 switch (clock) {
97 case 1:
98 t = at.udma ? (0xc0 | (FIT(at.udma, 2, 5) - 2)) : 0x03;
99 break;
100
101 case 2:
102 t = at.udma ? (0xc0 | amd_cyc2udma[FIT(at.udma, 2, 10)]) : 0x03;
103 break;
104
105 case 3:
106 t = at.udma ? (0xc0 | amd_cyc2udma[FIT(at.udma, 1, 10)]) : 0x03;
107 break;
108
109 case 4:
110 t = at.udma ? (0xc0 | amd_cyc2udma[FIT(at.udma, 1, 15)]) : 0x03;
111 break;
112
113 default:
114 return;
115 }
116
117 /* UDMA timing */
118 if (at.udma)
119 pci_write_config_byte(pdev, offset + 0x10 + (3 - dn), t);
120 }
121
122 /**
123 * amd_pre_reset - perform reset handling
124 * @link: ATA link
125 * @deadline: deadline jiffies for the operation
126 *
127 * Reset sequence checking enable bits to see which ports are
128 * active.
129 */
130
131 static int amd_pre_reset(struct ata_link *link, unsigned long deadline)
132 {
133 static const struct pci_bits amd_enable_bits[] = {
134 { 0x40, 1, 0x02, 0x02 },
135 { 0x40, 1, 0x01, 0x01 }
136 };
137
138 struct ata_port *ap = link->ap;
139 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
140
141 if (!pci_test_config_bits(pdev, &amd_enable_bits[ap->port_no]))
142 return -ENOENT;
143
144 return ata_std_prereset(link, deadline);
145 }
146
147 static void amd_error_handler(struct ata_port *ap)
148 {
149 return ata_bmdma_drive_eh(ap, amd_pre_reset,
150 ata_std_softreset, NULL,
151 ata_std_postreset);
152 }
153
154 static int amd_cable_detect(struct ata_port *ap)
155 {
156 static const u32 bitmask[2] = {0x03, 0x0C};
157 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
158 u8 ata66;
159
160 pci_read_config_byte(pdev, 0x42, &ata66);
161 if (ata66 & bitmask[ap->port_no])
162 return ATA_CBL_PATA80;
163 return ATA_CBL_PATA40;
164 }
165
166 /**
167 * amd33_set_piomode - set initial PIO mode data
168 * @ap: ATA interface
169 * @adev: ATA device
170 *
171 * Program the AMD registers for PIO mode.
172 */
173
174 static void amd33_set_piomode(struct ata_port *ap, struct ata_device *adev)
175 {
176 timing_setup(ap, adev, 0x40, adev->pio_mode, 1);
177 }
178
179 static void amd66_set_piomode(struct ata_port *ap, struct ata_device *adev)
180 {
181 timing_setup(ap, adev, 0x40, adev->pio_mode, 2);
182 }
183
184 static void amd100_set_piomode(struct ata_port *ap, struct ata_device *adev)
185 {
186 timing_setup(ap, adev, 0x40, adev->pio_mode, 3);
187 }
188
189 static void amd133_set_piomode(struct ata_port *ap, struct ata_device *adev)
190 {
191 timing_setup(ap, adev, 0x40, adev->pio_mode, 4);
192 }
193
194 /**
195 * amd33_set_dmamode - set initial DMA mode data
196 * @ap: ATA interface
197 * @adev: ATA device
198 *
199 * Program the MWDMA/UDMA modes for the AMD and Nvidia
200 * chipset.
201 */
202
203 static void amd33_set_dmamode(struct ata_port *ap, struct ata_device *adev)
204 {
205 timing_setup(ap, adev, 0x40, adev->dma_mode, 1);
206 }
207
208 static void amd66_set_dmamode(struct ata_port *ap, struct ata_device *adev)
209 {
210 timing_setup(ap, adev, 0x40, adev->dma_mode, 2);
211 }
212
213 static void amd100_set_dmamode(struct ata_port *ap, struct ata_device *adev)
214 {
215 timing_setup(ap, adev, 0x40, adev->dma_mode, 3);
216 }
217
218 static void amd133_set_dmamode(struct ata_port *ap, struct ata_device *adev)
219 {
220 timing_setup(ap, adev, 0x40, adev->dma_mode, 4);
221 }
222
223 /* Both host-side and drive-side detection results are worthless on NV
224 * PATAs. Ignore them and just follow what BIOS configured. Both the
225 * current configuration in PCI config reg and ACPI GTM result are
226 * cached during driver attach and are consulted to select transfer
227 * mode.
228 */
229 static unsigned long nv_mode_filter(struct ata_device *dev,
230 unsigned long xfer_mask)
231 {
232 static const unsigned int udma_mask_map[] =
233 { ATA_UDMA2, ATA_UDMA1, ATA_UDMA0, 0,
234 ATA_UDMA3, ATA_UDMA4, ATA_UDMA5, ATA_UDMA6 };
235 struct ata_port *ap = dev->link->ap;
236 char acpi_str[32] = "";
237 u32 saved_udma, udma;
238 const struct ata_acpi_gtm *gtm;
239 unsigned long bios_limit = 0, acpi_limit = 0, limit;
240
241 /* find out what BIOS configured */
242 udma = saved_udma = (unsigned long)ap->host->private_data;
243
244 if (ap->port_no == 0)
245 udma >>= 16;
246 if (dev->devno == 0)
247 udma >>= 8;
248
249 if ((udma & 0xc0) == 0xc0)
250 bios_limit = ata_pack_xfermask(0, 0, udma_mask_map[udma & 0x7]);
251
252 /* consult ACPI GTM too */
253 gtm = ata_acpi_init_gtm(ap);
254 if (gtm) {
255 acpi_limit = ata_acpi_gtm_xfermask(dev, gtm);
256
257 snprintf(acpi_str, sizeof(acpi_str), " (%u:%u:0x%x)",
258 gtm->drive[0].dma, gtm->drive[1].dma, gtm->flags);
259 }
260
261 /* be optimistic, EH can take care of things if something goes wrong */
262 limit = bios_limit | acpi_limit;
263
264 /* If PIO or DMA isn't configured at all, don't limit. Let EH
265 * handle it.
266 */
267 if (!(limit & ATA_MASK_PIO))
268 limit |= ATA_MASK_PIO;
269 if (!(limit & (ATA_MASK_MWDMA | ATA_MASK_UDMA)))
270 limit |= ATA_MASK_MWDMA | ATA_MASK_UDMA;
271
272 ata_port_printk(ap, KERN_DEBUG, "nv_mode_filter: 0x%lx&0x%lx->0x%lx, "
273 "BIOS=0x%lx (0x%x) ACPI=0x%lx%s\n",
274 xfer_mask, limit, xfer_mask & limit, bios_limit,
275 saved_udma, acpi_limit, acpi_str);
276
277 return xfer_mask & limit;
278 }
279
280 /**
281 * nv_probe_init - cable detection
282 * @lin: ATA link
283 *
284 * Perform cable detection. The BIOS stores this in PCI config
285 * space for us.
286 */
287
288 static int nv_pre_reset(struct ata_link *link, unsigned long deadline)
289 {
290 static const struct pci_bits nv_enable_bits[] = {
291 { 0x50, 1, 0x02, 0x02 },
292 { 0x50, 1, 0x01, 0x01 }
293 };
294
295 struct ata_port *ap = link->ap;
296 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
297
298 if (!pci_test_config_bits(pdev, &nv_enable_bits[ap->port_no]))
299 return -ENOENT;
300
301 return ata_std_prereset(link, deadline);
302 }
303
304 static void nv_error_handler(struct ata_port *ap)
305 {
306 ata_bmdma_drive_eh(ap, nv_pre_reset,
307 ata_std_softreset, NULL,
308 ata_std_postreset);
309 }
310
311 /**
312 * nv100_set_piomode - set initial PIO mode data
313 * @ap: ATA interface
314 * @adev: ATA device
315 *
316 * Program the AMD registers for PIO mode.
317 */
318
319 static void nv100_set_piomode(struct ata_port *ap, struct ata_device *adev)
320 {
321 timing_setup(ap, adev, 0x50, adev->pio_mode, 3);
322 }
323
324 static void nv133_set_piomode(struct ata_port *ap, struct ata_device *adev)
325 {
326 timing_setup(ap, adev, 0x50, adev->pio_mode, 4);
327 }
328
329 /**
330 * nv100_set_dmamode - set initial DMA mode data
331 * @ap: ATA interface
332 * @adev: ATA device
333 *
334 * Program the MWDMA/UDMA modes for the AMD and Nvidia
335 * chipset.
336 */
337
338 static void nv100_set_dmamode(struct ata_port *ap, struct ata_device *adev)
339 {
340 timing_setup(ap, adev, 0x50, adev->dma_mode, 3);
341 }
342
343 static void nv133_set_dmamode(struct ata_port *ap, struct ata_device *adev)
344 {
345 timing_setup(ap, adev, 0x50, adev->dma_mode, 4);
346 }
347
348 static void nv_host_stop(struct ata_host *host)
349 {
350 u32 udma = (unsigned long)host->private_data;
351
352 /* restore PCI config register 0x60 */
353 pci_write_config_dword(to_pci_dev(host->dev), 0x60, udma);
354 }
355
356 static struct scsi_host_template amd_sht = {
357 .module = THIS_MODULE,
358 .name = DRV_NAME,
359 .ioctl = ata_scsi_ioctl,
360 .queuecommand = ata_scsi_queuecmd,
361 .can_queue = ATA_DEF_QUEUE,
362 .this_id = ATA_SHT_THIS_ID,
363 .sg_tablesize = LIBATA_MAX_PRD,
364 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
365 .emulated = ATA_SHT_EMULATED,
366 .use_clustering = ATA_SHT_USE_CLUSTERING,
367 .proc_name = DRV_NAME,
368 .dma_boundary = ATA_DMA_BOUNDARY,
369 .slave_configure = ata_scsi_slave_config,
370 .slave_destroy = ata_scsi_slave_destroy,
371 .bios_param = ata_std_bios_param,
372 };
373
374 static struct ata_port_operations amd33_port_ops = {
375 .set_piomode = amd33_set_piomode,
376 .set_dmamode = amd33_set_dmamode,
377 .mode_filter = ata_pci_default_filter,
378 .tf_load = ata_tf_load,
379 .tf_read = ata_tf_read,
380 .check_status = ata_check_status,
381 .exec_command = ata_exec_command,
382 .dev_select = ata_std_dev_select,
383
384 .freeze = ata_bmdma_freeze,
385 .thaw = ata_bmdma_thaw,
386 .error_handler = amd_error_handler,
387 .post_internal_cmd = ata_bmdma_post_internal_cmd,
388 .cable_detect = ata_cable_40wire,
389
390 .bmdma_setup = ata_bmdma_setup,
391 .bmdma_start = ata_bmdma_start,
392 .bmdma_stop = ata_bmdma_stop,
393 .bmdma_status = ata_bmdma_status,
394
395 .qc_prep = ata_qc_prep,
396 .qc_issue = ata_qc_issue_prot,
397
398 .data_xfer = ata_data_xfer,
399
400 .irq_handler = ata_interrupt,
401 .irq_clear = ata_bmdma_irq_clear,
402 .irq_on = ata_irq_on,
403
404 .port_start = ata_sff_port_start,
405 };
406
407 static struct ata_port_operations amd66_port_ops = {
408 .set_piomode = amd66_set_piomode,
409 .set_dmamode = amd66_set_dmamode,
410 .mode_filter = ata_pci_default_filter,
411 .tf_load = ata_tf_load,
412 .tf_read = ata_tf_read,
413 .check_status = ata_check_status,
414 .exec_command = ata_exec_command,
415 .dev_select = ata_std_dev_select,
416
417 .freeze = ata_bmdma_freeze,
418 .thaw = ata_bmdma_thaw,
419 .error_handler = amd_error_handler,
420 .post_internal_cmd = ata_bmdma_post_internal_cmd,
421 .cable_detect = ata_cable_unknown,
422
423 .bmdma_setup = ata_bmdma_setup,
424 .bmdma_start = ata_bmdma_start,
425 .bmdma_stop = ata_bmdma_stop,
426 .bmdma_status = ata_bmdma_status,
427
428 .qc_prep = ata_qc_prep,
429 .qc_issue = ata_qc_issue_prot,
430
431 .data_xfer = ata_data_xfer,
432
433 .irq_handler = ata_interrupt,
434 .irq_clear = ata_bmdma_irq_clear,
435 .irq_on = ata_irq_on,
436
437 .port_start = ata_sff_port_start,
438 };
439
440 static struct ata_port_operations amd100_port_ops = {
441 .set_piomode = amd100_set_piomode,
442 .set_dmamode = amd100_set_dmamode,
443 .mode_filter = ata_pci_default_filter,
444 .tf_load = ata_tf_load,
445 .tf_read = ata_tf_read,
446 .check_status = ata_check_status,
447 .exec_command = ata_exec_command,
448 .dev_select = ata_std_dev_select,
449
450 .freeze = ata_bmdma_freeze,
451 .thaw = ata_bmdma_thaw,
452 .error_handler = amd_error_handler,
453 .post_internal_cmd = ata_bmdma_post_internal_cmd,
454 .cable_detect = ata_cable_unknown,
455
456 .bmdma_setup = ata_bmdma_setup,
457 .bmdma_start = ata_bmdma_start,
458 .bmdma_stop = ata_bmdma_stop,
459 .bmdma_status = ata_bmdma_status,
460
461 .qc_prep = ata_qc_prep,
462 .qc_issue = ata_qc_issue_prot,
463
464 .data_xfer = ata_data_xfer,
465
466 .irq_handler = ata_interrupt,
467 .irq_clear = ata_bmdma_irq_clear,
468 .irq_on = ata_irq_on,
469
470 .port_start = ata_sff_port_start,
471 };
472
473 static struct ata_port_operations amd133_port_ops = {
474 .set_piomode = amd133_set_piomode,
475 .set_dmamode = amd133_set_dmamode,
476 .mode_filter = ata_pci_default_filter,
477 .tf_load = ata_tf_load,
478 .tf_read = ata_tf_read,
479 .check_status = ata_check_status,
480 .exec_command = ata_exec_command,
481 .dev_select = ata_std_dev_select,
482
483 .freeze = ata_bmdma_freeze,
484 .thaw = ata_bmdma_thaw,
485 .error_handler = amd_error_handler,
486 .post_internal_cmd = ata_bmdma_post_internal_cmd,
487 .cable_detect = amd_cable_detect,
488
489 .bmdma_setup = ata_bmdma_setup,
490 .bmdma_start = ata_bmdma_start,
491 .bmdma_stop = ata_bmdma_stop,
492 .bmdma_status = ata_bmdma_status,
493
494 .qc_prep = ata_qc_prep,
495 .qc_issue = ata_qc_issue_prot,
496
497 .data_xfer = ata_data_xfer,
498
499 .irq_handler = ata_interrupt,
500 .irq_clear = ata_bmdma_irq_clear,
501 .irq_on = ata_irq_on,
502
503 .port_start = ata_sff_port_start,
504 };
505
506 static struct ata_port_operations nv100_port_ops = {
507 .set_piomode = nv100_set_piomode,
508 .set_dmamode = nv100_set_dmamode,
509 .mode_filter = ata_pci_default_filter,
510 .tf_load = ata_tf_load,
511 .tf_read = ata_tf_read,
512 .check_status = ata_check_status,
513 .exec_command = ata_exec_command,
514 .dev_select = ata_std_dev_select,
515
516 .freeze = ata_bmdma_freeze,
517 .thaw = ata_bmdma_thaw,
518 .error_handler = nv_error_handler,
519 .post_internal_cmd = ata_bmdma_post_internal_cmd,
520 .cable_detect = ata_cable_ignore,
521 .mode_filter = nv_mode_filter,
522
523 .bmdma_setup = ata_bmdma_setup,
524 .bmdma_start = ata_bmdma_start,
525 .bmdma_stop = ata_bmdma_stop,
526 .bmdma_status = ata_bmdma_status,
527
528 .qc_prep = ata_qc_prep,
529 .qc_issue = ata_qc_issue_prot,
530
531 .data_xfer = ata_data_xfer,
532
533 .irq_handler = ata_interrupt,
534 .irq_clear = ata_bmdma_irq_clear,
535 .irq_on = ata_irq_on,
536
537 .port_start = ata_sff_port_start,
538 .host_stop = nv_host_stop,
539 };
540
541 static struct ata_port_operations nv133_port_ops = {
542 .set_piomode = nv133_set_piomode,
543 .set_dmamode = nv133_set_dmamode,
544 .mode_filter = ata_pci_default_filter,
545 .tf_load = ata_tf_load,
546 .tf_read = ata_tf_read,
547 .check_status = ata_check_status,
548 .exec_command = ata_exec_command,
549 .dev_select = ata_std_dev_select,
550
551 .freeze = ata_bmdma_freeze,
552 .thaw = ata_bmdma_thaw,
553 .error_handler = nv_error_handler,
554 .post_internal_cmd = ata_bmdma_post_internal_cmd,
555 .cable_detect = ata_cable_ignore,
556 .mode_filter = nv_mode_filter,
557
558 .bmdma_setup = ata_bmdma_setup,
559 .bmdma_start = ata_bmdma_start,
560 .bmdma_stop = ata_bmdma_stop,
561 .bmdma_status = ata_bmdma_status,
562
563 .qc_prep = ata_qc_prep,
564 .qc_issue = ata_qc_issue_prot,
565
566 .data_xfer = ata_data_xfer,
567
568 .irq_handler = ata_interrupt,
569 .irq_clear = ata_bmdma_irq_clear,
570 .irq_on = ata_irq_on,
571
572 .port_start = ata_sff_port_start,
573 .host_stop = nv_host_stop,
574 };
575
576 static int amd_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
577 {
578 static const struct ata_port_info info[10] = {
579 { /* 0: AMD 7401 */
580 .sht = &amd_sht,
581 .flags = ATA_FLAG_SLAVE_POSS,
582 .pio_mask = 0x1f,
583 .mwdma_mask = 0x07, /* No SWDMA */
584 .udma_mask = 0x07, /* UDMA 33 */
585 .port_ops = &amd33_port_ops
586 },
587 { /* 1: Early AMD7409 - no swdma */
588 .sht = &amd_sht,
589 .flags = ATA_FLAG_SLAVE_POSS,
590 .pio_mask = 0x1f,
591 .mwdma_mask = 0x07,
592 .udma_mask = ATA_UDMA4, /* UDMA 66 */
593 .port_ops = &amd66_port_ops
594 },
595 { /* 2: AMD 7409, no swdma errata */
596 .sht = &amd_sht,
597 .flags = ATA_FLAG_SLAVE_POSS,
598 .pio_mask = 0x1f,
599 .mwdma_mask = 0x07,
600 .udma_mask = ATA_UDMA4, /* UDMA 66 */
601 .port_ops = &amd66_port_ops
602 },
603 { /* 3: AMD 7411 */
604 .sht = &amd_sht,
605 .flags = ATA_FLAG_SLAVE_POSS,
606 .pio_mask = 0x1f,
607 .mwdma_mask = 0x07,
608 .udma_mask = ATA_UDMA5, /* UDMA 100 */
609 .port_ops = &amd100_port_ops
610 },
611 { /* 4: AMD 7441 */
612 .sht = &amd_sht,
613 .flags = ATA_FLAG_SLAVE_POSS,
614 .pio_mask = 0x1f,
615 .mwdma_mask = 0x07,
616 .udma_mask = ATA_UDMA5, /* UDMA 100 */
617 .port_ops = &amd100_port_ops
618 },
619 { /* 5: AMD 8111*/
620 .sht = &amd_sht,
621 .flags = ATA_FLAG_SLAVE_POSS,
622 .pio_mask = 0x1f,
623 .mwdma_mask = 0x07,
624 .udma_mask = ATA_UDMA6, /* UDMA 133, no swdma */
625 .port_ops = &amd133_port_ops
626 },
627 { /* 6: AMD 8111 UDMA 100 (Serenade) */
628 .sht = &amd_sht,
629 .flags = ATA_FLAG_SLAVE_POSS,
630 .pio_mask = 0x1f,
631 .mwdma_mask = 0x07,
632 .udma_mask = ATA_UDMA5, /* UDMA 100, no swdma */
633 .port_ops = &amd133_port_ops
634 },
635 { /* 7: Nvidia Nforce */
636 .sht = &amd_sht,
637 .flags = ATA_FLAG_SLAVE_POSS,
638 .pio_mask = 0x1f,
639 .mwdma_mask = 0x07,
640 .udma_mask = ATA_UDMA5, /* UDMA 100 */
641 .port_ops = &nv100_port_ops
642 },
643 { /* 8: Nvidia Nforce2 and later */
644 .sht = &amd_sht,
645 .flags = ATA_FLAG_SLAVE_POSS,
646 .pio_mask = 0x1f,
647 .mwdma_mask = 0x07,
648 .udma_mask = ATA_UDMA6, /* UDMA 133, no swdma */
649 .port_ops = &nv133_port_ops
650 },
651 { /* 9: AMD CS5536 (Geode companion) */
652 .sht = &amd_sht,
653 .flags = ATA_FLAG_SLAVE_POSS,
654 .pio_mask = 0x1f,
655 .mwdma_mask = 0x07,
656 .udma_mask = ATA_UDMA5, /* UDMA 100 */
657 .port_ops = &amd100_port_ops
658 }
659 };
660 struct ata_port_info pi;
661 const struct ata_port_info *ppi[] = { &pi, NULL };
662 static int printed_version;
663 int type = id->driver_data;
664 u8 fifo;
665
666 if (!printed_version++)
667 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
668
669 pci_read_config_byte(pdev, 0x41, &fifo);
670
671 /* Check for AMD7409 without swdma errata and if found adjust type */
672 if (type == 1 && pdev->revision > 0x7)
673 type = 2;
674
675 /* Serenade ? */
676 if (type == 5 && pdev->subsystem_vendor == PCI_VENDOR_ID_AMD &&
677 pdev->subsystem_device == PCI_DEVICE_ID_AMD_SERENADE)
678 type = 6; /* UDMA 100 only */
679
680 /*
681 * Okay, type is determined now. Apply type-specific workarounds.
682 */
683 pi = info[type];
684
685 if (type < 3)
686 ata_pci_clear_simplex(pdev);
687
688 /* Check for AMD7411 */
689 if (type == 3)
690 /* FIFO is broken */
691 pci_write_config_byte(pdev, 0x41, fifo & 0x0F);
692 else
693 pci_write_config_byte(pdev, 0x41, fifo | 0xF0);
694
695 /* Cable detection on Nvidia chips doesn't work too well,
696 * cache BIOS programmed UDMA mode.
697 */
698 if (type == 7 || type == 8) {
699 u32 udma;
700
701 pci_read_config_dword(pdev, 0x60, &udma);
702 pi.private_data = (void *)(unsigned long)udma;
703 }
704
705 /* And fire it up */
706 return ata_pci_init_one(pdev, ppi);
707 }
708
709 #ifdef CONFIG_PM
710 static int amd_reinit_one(struct pci_dev *pdev)
711 {
712 if (pdev->vendor == PCI_VENDOR_ID_AMD) {
713 u8 fifo;
714 pci_read_config_byte(pdev, 0x41, &fifo);
715 if (pdev->device == PCI_DEVICE_ID_AMD_VIPER_7411)
716 /* FIFO is broken */
717 pci_write_config_byte(pdev, 0x41, fifo & 0x0F);
718 else
719 pci_write_config_byte(pdev, 0x41, fifo | 0xF0);
720 if (pdev->device == PCI_DEVICE_ID_AMD_VIPER_7409 ||
721 pdev->device == PCI_DEVICE_ID_AMD_COBRA_7401)
722 ata_pci_clear_simplex(pdev);
723 }
724 return ata_pci_device_resume(pdev);
725 }
726 #endif
727
728 static const struct pci_device_id amd[] = {
729 { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_COBRA_7401), 0 },
730 { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_VIPER_7409), 1 },
731 { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_VIPER_7411), 3 },
732 { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_OPUS_7441), 4 },
733 { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_8111_IDE), 5 },
734 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_IDE), 7 },
735 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2_IDE), 8 },
736 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2S_IDE), 8 },
737 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3_IDE), 8 },
738 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3S_IDE), 8 },
739 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_IDE), 8 },
740 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_IDE), 8 },
741 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_IDE), 8 },
742 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_IDE), 8 },
743 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_IDE), 8 },
744 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP65_IDE), 8 },
745 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP67_IDE), 8 },
746 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP73_IDE), 8 },
747 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP77_IDE), 8 },
748 { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_CS5536_IDE), 9 },
749
750 { },
751 };
752
753 static struct pci_driver amd_pci_driver = {
754 .name = DRV_NAME,
755 .id_table = amd,
756 .probe = amd_init_one,
757 .remove = ata_pci_remove_one,
758 #ifdef CONFIG_PM
759 .suspend = ata_pci_device_suspend,
760 .resume = amd_reinit_one,
761 #endif
762 };
763
764 static int __init amd_init(void)
765 {
766 return pci_register_driver(&amd_pci_driver);
767 }
768
769 static void __exit amd_exit(void)
770 {
771 pci_unregister_driver(&amd_pci_driver);
772 }
773
774 MODULE_AUTHOR("Alan Cox");
775 MODULE_DESCRIPTION("low-level driver for AMD and Nvidia PATA IDE");
776 MODULE_LICENSE("GPL");
777 MODULE_DEVICE_TABLE(pci, amd);
778 MODULE_VERSION(DRV_VERSION);
779
780 module_init(amd_init);
781 module_exit(amd_exit);
Stable & featurefull patchset based on Linus's git branch