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18#include <linux/kernel.h>
19#include <linux/module.h>
20#include <linux/pci.h>
21#include <linux/blkdev.h>
22#include <linux/delay.h>
23#include <scsi/scsi_host.h>
24#include <linux/libata.h>
25
26#define DRV_NAME "pata_amd"
27#define DRV_VERSION "0.4.1"
28
29
30
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34
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40
41
42
43static void timing_setup(struct ata_port *ap, struct ata_device *adev, int offset, int speed, int clock)
44{
45 static const unsigned char amd_cyc2udma[] = {
46 6, 6, 5, 4, 0, 1, 1, 2, 2, 3, 3, 3, 3, 3, 3, 7
47 };
48
49 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
50 struct ata_device *peer = ata_dev_pair(adev);
51 int dn = ap->port_no * 2 + adev->devno;
52 struct ata_timing at, apeer;
53 int T, UT;
54 const int amd_clock = 33333;
55 u8 t;
56
57 T = 1000000000 / amd_clock;
58 UT = T;
59 if (clock >= 2)
60 UT = T / 2;
61
62 if (ata_timing_compute(adev, speed, &at, T, UT) < 0) {
63 dev_err(&pdev->dev, "unknown mode %d\n", speed);
64 return;
65 }
66
67 if (peer) {
68
69 if (peer->dma_mode) {
70 ata_timing_compute(peer, peer->dma_mode, &apeer, T, UT);
71 ata_timing_merge(&apeer, &at, &at, ATA_TIMING_8BIT);
72 }
73 ata_timing_compute(peer, peer->pio_mode, &apeer, T, UT);
74 ata_timing_merge(&apeer, &at, &at, ATA_TIMING_8BIT);
75 }
76
77 if (speed == XFER_UDMA_5 && amd_clock <= 33333) at.udma = 1;
78 if (speed == XFER_UDMA_6 && amd_clock <= 33333) at.udma = 15;
79
80
81
82
83
84
85 pci_read_config_byte(pdev, offset + 0x0C, &t);
86 t = (t & ~(3 << ((3 - dn) << 1))) | ((clamp_val(at.setup, 1, 4) - 1) << ((3 - dn) << 1));
87 pci_write_config_byte(pdev, offset + 0x0C , t);
88
89
90 pci_write_config_byte(pdev, offset + 0x0E + (1 - (dn >> 1)),
91 ((clamp_val(at.act8b, 1, 16) - 1) << 4) | (clamp_val(at.rec8b, 1, 16) - 1));
92
93
94 pci_write_config_byte(pdev, offset + 0x08 + (3 - dn),
95 ((clamp_val(at.active, 1, 16) - 1) << 4) | (clamp_val(at.recover, 1, 16) - 1));
96
97 switch (clock) {
98 case 1:
99 t = at.udma ? (0xc0 | (clamp_val(at.udma, 2, 5) - 2)) : 0x03;
100 break;
101
102 case 2:
103 t = at.udma ? (0xc0 | amd_cyc2udma[clamp_val(at.udma, 2, 10)]) : 0x03;
104 break;
105
106 case 3:
107 t = at.udma ? (0xc0 | amd_cyc2udma[clamp_val(at.udma, 1, 10)]) : 0x03;
108 break;
109
110 case 4:
111 t = at.udma ? (0xc0 | amd_cyc2udma[clamp_val(at.udma, 1, 15)]) : 0x03;
112 break;
113
114 default:
115 return;
116 }
117
118
119 if (at.udma)
120 pci_write_config_byte(pdev, offset + 0x10 + (3 - dn), t);
121}
122
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130
131
132static int amd_pre_reset(struct ata_link *link, unsigned long deadline)
133{
134 static const struct pci_bits amd_enable_bits[] = {
135 { 0x40, 1, 0x02, 0x02 },
136 { 0x40, 1, 0x01, 0x01 }
137 };
138
139 struct ata_port *ap = link->ap;
140 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
141
142 if (!pci_test_config_bits(pdev, &amd_enable_bits[ap->port_no]))
143 return -ENOENT;
144
145 return ata_sff_prereset(link, deadline);
146}
147
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153
154
155static int amd_cable_detect(struct ata_port *ap)
156{
157 static const u32 bitmask[2] = {0x03, 0x0C};
158 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
159 u8 ata66;
160
161 pci_read_config_byte(pdev, 0x42, &ata66);
162 if (ata66 & bitmask[ap->port_no])
163 return ATA_CBL_PATA80;
164 return ATA_CBL_PATA40;
165}
166
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175
176
177static void amd_fifo_setup(struct ata_port *ap)
178{
179 struct ata_device *adev;
180 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
181 static const u8 fifobit[2] = { 0xC0, 0x30};
182 u8 fifo = fifobit[ap->port_no];
183 u8 r;
184
185
186 ata_for_each_dev(adev, &ap->link, ENABLED) {
187 if (adev->class == ATA_DEV_ATAPI)
188 fifo = 0;
189 }
190 if (pdev->device == PCI_DEVICE_ID_AMD_VIPER_7411)
191 fifo = 0;
192
193
194 pci_read_config_byte(pdev, 0x41, &r);
195 r &= ~fifobit[ap->port_no];
196 r |= fifo;
197 pci_write_config_byte(pdev, 0x41, r);
198}
199
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206
207
208static void amd33_set_piomode(struct ata_port *ap, struct ata_device *adev)
209{
210 amd_fifo_setup(ap);
211 timing_setup(ap, adev, 0x40, adev->pio_mode, 1);
212}
213
214static void amd66_set_piomode(struct ata_port *ap, struct ata_device *adev)
215{
216 amd_fifo_setup(ap);
217 timing_setup(ap, adev, 0x40, adev->pio_mode, 2);
218}
219
220static void amd100_set_piomode(struct ata_port *ap, struct ata_device *adev)
221{
222 amd_fifo_setup(ap);
223 timing_setup(ap, adev, 0x40, adev->pio_mode, 3);
224}
225
226static void amd133_set_piomode(struct ata_port *ap, struct ata_device *adev)
227{
228 amd_fifo_setup(ap);
229 timing_setup(ap, adev, 0x40, adev->pio_mode, 4);
230}
231
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240
241static void amd33_set_dmamode(struct ata_port *ap, struct ata_device *adev)
242{
243 timing_setup(ap, adev, 0x40, adev->dma_mode, 1);
244}
245
246static void amd66_set_dmamode(struct ata_port *ap, struct ata_device *adev)
247{
248 timing_setup(ap, adev, 0x40, adev->dma_mode, 2);
249}
250
251static void amd100_set_dmamode(struct ata_port *ap, struct ata_device *adev)
252{
253 timing_setup(ap, adev, 0x40, adev->dma_mode, 3);
254}
255
256static void amd133_set_dmamode(struct ata_port *ap, struct ata_device *adev)
257{
258 timing_setup(ap, adev, 0x40, adev->dma_mode, 4);
259}
260
261
262
263
264
265
266
267static unsigned long nv_mode_filter(struct ata_device *dev,
268 unsigned long xfer_mask)
269{
270 static const unsigned int udma_mask_map[] =
271 { ATA_UDMA2, ATA_UDMA1, ATA_UDMA0, 0,
272 ATA_UDMA3, ATA_UDMA4, ATA_UDMA5, ATA_UDMA6 };
273 struct ata_port *ap = dev->link->ap;
274 char acpi_str[32] = "";
275 u32 saved_udma, udma;
276 const struct ata_acpi_gtm *gtm;
277 unsigned long bios_limit = 0, acpi_limit = 0, limit;
278
279
280 udma = saved_udma = (unsigned long)ap->host->private_data;
281
282 if (ap->port_no == 0)
283 udma >>= 16;
284 if (dev->devno == 0)
285 udma >>= 8;
286
287 if ((udma & 0xc0) == 0xc0)
288 bios_limit = ata_pack_xfermask(0, 0, udma_mask_map[udma & 0x7]);
289
290
291 gtm = ata_acpi_init_gtm(ap);
292 if (gtm) {
293 acpi_limit = ata_acpi_gtm_xfermask(dev, gtm);
294
295 snprintf(acpi_str, sizeof(acpi_str), " (%u:%u:0x%x)",
296 gtm->drive[0].dma, gtm->drive[1].dma, gtm->flags);
297 }
298
299
300 limit = bios_limit | acpi_limit;
301
302
303
304
305 if (!(limit & ATA_MASK_PIO))
306 limit |= ATA_MASK_PIO;
307 if (!(limit & (ATA_MASK_MWDMA | ATA_MASK_UDMA)))
308 limit |= ATA_MASK_MWDMA | ATA_MASK_UDMA;
309
310
311 limit |= ata_pack_xfermask(ATA_PIO4, ATA_MWDMA2, ATA_UDMA2);
312
313 ata_port_dbg(ap, "nv_mode_filter: 0x%lx&0x%lx->0x%lx, "
314 "BIOS=0x%lx (0x%x) ACPI=0x%lx%s\n",
315 xfer_mask, limit, xfer_mask & limit, bios_limit,
316 saved_udma, acpi_limit, acpi_str);
317
318 return xfer_mask & limit;
319}
320
321
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325
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328
329
330static int nv_pre_reset(struct ata_link *link, unsigned long deadline)
331{
332 static const struct pci_bits nv_enable_bits[] = {
333 { 0x50, 1, 0x02, 0x02 },
334 { 0x50, 1, 0x01, 0x01 }
335 };
336
337 struct ata_port *ap = link->ap;
338 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
339
340 if (!pci_test_config_bits(pdev, &nv_enable_bits[ap->port_no]))
341 return -ENOENT;
342
343 return ata_sff_prereset(link, deadline);
344}
345
346
347
348
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350
351
352
353
354static void nv100_set_piomode(struct ata_port *ap, struct ata_device *adev)
355{
356 timing_setup(ap, adev, 0x50, adev->pio_mode, 3);
357}
358
359static void nv133_set_piomode(struct ata_port *ap, struct ata_device *adev)
360{
361 timing_setup(ap, adev, 0x50, adev->pio_mode, 4);
362}
363
364
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371
372
373static void nv100_set_dmamode(struct ata_port *ap, struct ata_device *adev)
374{
375 timing_setup(ap, adev, 0x50, adev->dma_mode, 3);
376}
377
378static void nv133_set_dmamode(struct ata_port *ap, struct ata_device *adev)
379{
380 timing_setup(ap, adev, 0x50, adev->dma_mode, 4);
381}
382
383static void nv_host_stop(struct ata_host *host)
384{
385 u32 udma = (unsigned long)host->private_data;
386
387
388 pci_write_config_dword(to_pci_dev(host->dev), 0x60, udma);
389}
390
391static struct scsi_host_template amd_sht = {
392 ATA_BMDMA_SHT(DRV_NAME),
393};
394
395static const struct ata_port_operations amd_base_port_ops = {
396 .inherits = &ata_bmdma32_port_ops,
397 .prereset = amd_pre_reset,
398};
399
400static struct ata_port_operations amd33_port_ops = {
401 .inherits = &amd_base_port_ops,
402 .cable_detect = ata_cable_40wire,
403 .set_piomode = amd33_set_piomode,
404 .set_dmamode = amd33_set_dmamode,
405};
406
407static struct ata_port_operations amd66_port_ops = {
408 .inherits = &amd_base_port_ops,
409 .cable_detect = ata_cable_unknown,
410 .set_piomode = amd66_set_piomode,
411 .set_dmamode = amd66_set_dmamode,
412};
413
414static struct ata_port_operations amd100_port_ops = {
415 .inherits = &amd_base_port_ops,
416 .cable_detect = ata_cable_unknown,
417 .set_piomode = amd100_set_piomode,
418 .set_dmamode = amd100_set_dmamode,
419};
420
421static struct ata_port_operations amd133_port_ops = {
422 .inherits = &amd_base_port_ops,
423 .cable_detect = amd_cable_detect,
424 .set_piomode = amd133_set_piomode,
425 .set_dmamode = amd133_set_dmamode,
426};
427
428static const struct ata_port_operations nv_base_port_ops = {
429 .inherits = &ata_bmdma_port_ops,
430 .cable_detect = ata_cable_ignore,
431 .mode_filter = nv_mode_filter,
432 .prereset = nv_pre_reset,
433 .host_stop = nv_host_stop,
434};
435
436static struct ata_port_operations nv100_port_ops = {
437 .inherits = &nv_base_port_ops,
438 .set_piomode = nv100_set_piomode,
439 .set_dmamode = nv100_set_dmamode,
440};
441
442static struct ata_port_operations nv133_port_ops = {
443 .inherits = &nv_base_port_ops,
444 .set_piomode = nv133_set_piomode,
445 .set_dmamode = nv133_set_dmamode,
446};
447
448static void amd_clear_fifo(struct pci_dev *pdev)
449{
450 u8 fifo;
451
452
453 pci_read_config_byte(pdev, 0x41, &fifo);
454 fifo &= 0x0F;
455 pci_write_config_byte(pdev, 0x41, fifo);
456}
457
458static int amd_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
459{
460 static const struct ata_port_info info[10] = {
461 {
462 .flags = ATA_FLAG_SLAVE_POSS,
463 .pio_mask = ATA_PIO4,
464 .mwdma_mask = ATA_MWDMA2,
465 .udma_mask = ATA_UDMA2,
466 .port_ops = &amd33_port_ops
467 },
468 {
469 .flags = ATA_FLAG_SLAVE_POSS,
470 .pio_mask = ATA_PIO4,
471 .mwdma_mask = ATA_MWDMA2,
472 .udma_mask = ATA_UDMA4,
473 .port_ops = &amd66_port_ops
474 },
475 {
476 .flags = ATA_FLAG_SLAVE_POSS,
477 .pio_mask = ATA_PIO4,
478 .mwdma_mask = ATA_MWDMA2,
479 .udma_mask = ATA_UDMA4,
480 .port_ops = &amd66_port_ops
481 },
482 {
483 .flags = ATA_FLAG_SLAVE_POSS,
484 .pio_mask = ATA_PIO4,
485 .mwdma_mask = ATA_MWDMA2,
486 .udma_mask = ATA_UDMA5,
487 .port_ops = &amd100_port_ops
488 },
489 {
490 .flags = ATA_FLAG_SLAVE_POSS,
491 .pio_mask = ATA_PIO4,
492 .mwdma_mask = ATA_MWDMA2,
493 .udma_mask = ATA_UDMA5,
494 .port_ops = &amd100_port_ops
495 },
496 {
497 .flags = ATA_FLAG_SLAVE_POSS,
498 .pio_mask = ATA_PIO4,
499 .mwdma_mask = ATA_MWDMA2,
500 .udma_mask = ATA_UDMA6,
501 .port_ops = &amd133_port_ops
502 },
503 {
504 .flags = ATA_FLAG_SLAVE_POSS,
505 .pio_mask = ATA_PIO4,
506 .mwdma_mask = ATA_MWDMA2,
507 .udma_mask = ATA_UDMA5,
508 .port_ops = &amd133_port_ops
509 },
510 {
511 .flags = ATA_FLAG_SLAVE_POSS,
512 .pio_mask = ATA_PIO4,
513 .mwdma_mask = ATA_MWDMA2,
514 .udma_mask = ATA_UDMA5,
515 .port_ops = &nv100_port_ops
516 },
517 {
518 .flags = ATA_FLAG_SLAVE_POSS,
519 .pio_mask = ATA_PIO4,
520 .mwdma_mask = ATA_MWDMA2,
521 .udma_mask = ATA_UDMA6,
522 .port_ops = &nv133_port_ops
523 },
524 {
525 .flags = ATA_FLAG_SLAVE_POSS,
526 .pio_mask = ATA_PIO4,
527 .mwdma_mask = ATA_MWDMA2,
528 .udma_mask = ATA_UDMA5,
529 .port_ops = &amd100_port_ops
530 }
531 };
532 const struct ata_port_info *ppi[] = { NULL, NULL };
533 int type = id->driver_data;
534 void *hpriv = NULL;
535 u8 fifo;
536 int rc;
537
538 ata_print_version_once(&pdev->dev, DRV_VERSION);
539
540 rc = pcim_enable_device(pdev);
541 if (rc)
542 return rc;
543
544 pci_read_config_byte(pdev, 0x41, &fifo);
545
546
547 if (type == 1 && pdev->revision > 0x7)
548 type = 2;
549
550
551 if (type == 5 && pdev->subsystem_vendor == PCI_VENDOR_ID_AMD &&
552 pdev->subsystem_device == PCI_DEVICE_ID_AMD_SERENADE)
553 type = 6;
554
555
556
557
558 ppi[0] = &info[type];
559
560 if (type < 3)
561 ata_pci_bmdma_clear_simplex(pdev);
562 if (pdev->vendor == PCI_VENDOR_ID_AMD)
563 amd_clear_fifo(pdev);
564
565
566
567 if (type == 7 || type == 8) {
568 u32 udma;
569
570 pci_read_config_dword(pdev, 0x60, &udma);
571 hpriv = (void *)(unsigned long)udma;
572 }
573
574
575 return ata_pci_bmdma_init_one(pdev, ppi, &amd_sht, hpriv, 0);
576}
577
578#ifdef CONFIG_PM_SLEEP
579static int amd_reinit_one(struct pci_dev *pdev)
580{
581 struct ata_host *host = pci_get_drvdata(pdev);
582 int rc;
583
584 rc = ata_pci_device_do_resume(pdev);
585 if (rc)
586 return rc;
587
588 if (pdev->vendor == PCI_VENDOR_ID_AMD) {
589 amd_clear_fifo(pdev);
590 if (pdev->device == PCI_DEVICE_ID_AMD_VIPER_7409 ||
591 pdev->device == PCI_DEVICE_ID_AMD_COBRA_7401)
592 ata_pci_bmdma_clear_simplex(pdev);
593 }
594 ata_host_resume(host);
595 return 0;
596}
597#endif
598
599static const struct pci_device_id amd[] = {
600 { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_COBRA_7401), 0 },
601 { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_VIPER_7409), 1 },
602 { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_VIPER_7411), 3 },
603 { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_OPUS_7441), 4 },
604 { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_8111_IDE), 5 },
605 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_IDE), 7 },
606 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2_IDE), 8 },
607 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2S_IDE), 8 },
608 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3_IDE), 8 },
609 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3S_IDE), 8 },
610 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_IDE), 8 },
611 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_IDE), 8 },
612 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_IDE), 8 },
613 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_IDE), 8 },
614 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_IDE), 8 },
615 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP65_IDE), 8 },
616 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP67_IDE), 8 },
617 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP73_IDE), 8 },
618 { PCI_VDEVICE(NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP77_IDE), 8 },
619 { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_CS5536_IDE), 9 },
620 { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_CS5536_DEV_IDE), 9 },
621
622 { },
623};
624
625static struct pci_driver amd_pci_driver = {
626 .name = DRV_NAME,
627 .id_table = amd,
628 .probe = amd_init_one,
629 .remove = ata_pci_remove_one,
630#ifdef CONFIG_PM_SLEEP
631 .suspend = ata_pci_device_suspend,
632 .resume = amd_reinit_one,
633#endif
634};
635
636module_pci_driver(amd_pci_driver);
637
638MODULE_AUTHOR("Alan Cox");
639MODULE_DESCRIPTION("low-level driver for AMD and Nvidia PATA IDE");
640MODULE_LICENSE("GPL");
641MODULE_DEVICE_TABLE(pci, amd);
642MODULE_VERSION(DRV_VERSION);
643