This source file includes following definitions.
- it821x_program
- it821x_program_udma
- it821x_clock_strategy
- it821x_set_pio_mode
- it821x_tune_mwdma
- it821x_tune_udma
- it821x_dma_start
- it821x_dma_end
- it821x_set_dma_mode
- it821x_cable_detect
- it821x_quirkproc
- init_hwif_it821x
- it8212_disable_raid
- init_chipset_it821x
- it821x_init_one
- it821x_remove
- it821x_ide_init
- it821x_ide_exit
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62 #include <linux/types.h>
63 #include <linux/module.h>
64 #include <linux/slab.h>
65 #include <linux/pci.h>
66 #include <linux/ide.h>
67 #include <linux/init.h>
68
69 #define DRV_NAME "it821x"
70
71 #define QUIRK_VORTEX86 1
72
73 struct it821x_dev
74 {
75 unsigned int smart:1,
76 timing10:1;
77 u8 clock_mode;
78 u8 want[2][2];
79
80
81 u16 pio[2];
82 u16 mwdma[2];
83 u16 udma[2];
84 u16 quirks;
85 };
86
87 #define ATA_66 0
88 #define ATA_50 1
89 #define ATA_ANY 2
90
91 #define UDMA_OFF 0
92 #define MWDMA_OFF 0
93
94
95
96
97
98
99
100
101 static int it8212_noraid;
102
103
104
105
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107
108
109
110
111
112 static void it821x_program(ide_drive_t *drive, u16 timing)
113 {
114 ide_hwif_t *hwif = drive->hwif;
115 struct pci_dev *dev = to_pci_dev(hwif->dev);
116 struct it821x_dev *itdev = ide_get_hwifdata(hwif);
117 int channel = hwif->channel;
118 u8 conf;
119
120
121 if(itdev->clock_mode == ATA_66)
122 conf = timing >> 8;
123 else
124 conf = timing & 0xFF;
125
126 pci_write_config_byte(dev, 0x54 + 4 * channel, conf);
127 }
128
129
130
131
132
133
134
135
136
137
138 static void it821x_program_udma(ide_drive_t *drive, u16 timing)
139 {
140 ide_hwif_t *hwif = drive->hwif;
141 struct pci_dev *dev = to_pci_dev(hwif->dev);
142 struct it821x_dev *itdev = ide_get_hwifdata(hwif);
143 int channel = hwif->channel;
144 u8 unit = drive->dn & 1, conf;
145
146
147 if(itdev->clock_mode == ATA_66)
148 conf = timing >> 8;
149 else
150 conf = timing & 0xFF;
151
152 if (itdev->timing10 == 0)
153 pci_write_config_byte(dev, 0x56 + 4 * channel + unit, conf);
154 else {
155 pci_write_config_byte(dev, 0x56 + 4 * channel, conf);
156 pci_write_config_byte(dev, 0x56 + 4 * channel + 1, conf);
157 }
158 }
159
160
161
162
163
164
165
166
167
168 static void it821x_clock_strategy(ide_drive_t *drive)
169 {
170 ide_hwif_t *hwif = drive->hwif;
171 struct pci_dev *dev = to_pci_dev(hwif->dev);
172 struct it821x_dev *itdev = ide_get_hwifdata(hwif);
173 ide_drive_t *pair = ide_get_pair_dev(drive);
174 int clock, altclock, sel = 0;
175 u8 unit = drive->dn & 1, v;
176
177 if(itdev->want[0][0] > itdev->want[1][0]) {
178 clock = itdev->want[0][1];
179 altclock = itdev->want[1][1];
180 } else {
181 clock = itdev->want[1][1];
182 altclock = itdev->want[0][1];
183 }
184
185
186
187
188
189 if (clock == ATA_ANY)
190 clock = altclock;
191
192
193 if(clock == ATA_ANY)
194 return;
195
196 if(clock == itdev->clock_mode)
197 return;
198
199
200 if(clock == ATA_66)
201 itdev->clock_mode = ATA_66;
202 else {
203 itdev->clock_mode = ATA_50;
204 sel = 1;
205 }
206
207 pci_read_config_byte(dev, 0x50, &v);
208 v &= ~(1 << (1 + hwif->channel));
209 v |= sel << (1 + hwif->channel);
210 pci_write_config_byte(dev, 0x50, v);
211
212
213
214
215
216 if(pair && itdev->udma[1-unit] != UDMA_OFF) {
217 it821x_program_udma(pair, itdev->udma[1-unit]);
218 it821x_program(pair, itdev->pio[1-unit]);
219 }
220
221
222
223
224 if(itdev->udma[unit] != UDMA_OFF) {
225 it821x_program_udma(drive, itdev->udma[unit]);
226 it821x_program(drive, itdev->pio[unit]);
227 }
228 }
229
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237
238
239 static void it821x_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
240 {
241 struct it821x_dev *itdev = ide_get_hwifdata(hwif);
242 ide_drive_t *pair = ide_get_pair_dev(drive);
243 const u8 pio = drive->pio_mode - XFER_PIO_0;
244 u8 unit = drive->dn & 1, set_pio = pio;
245
246
247 static u16 pio_timings[]= { 0xAA88, 0xA382, 0xA181, 0x3332, 0x3121 };
248 static u8 pio_want[] = { ATA_66, ATA_66, ATA_66, ATA_66, ATA_ANY };
249
250
251
252
253
254
255 if (pair) {
256 u8 pair_pio = pair->pio_mode - XFER_PIO_0;
257
258 if (pair_pio < set_pio)
259 set_pio = pair_pio;
260 }
261
262
263 itdev->want[unit][1] = pio_want[set_pio];
264 itdev->want[unit][0] = 1;
265 itdev->pio[unit] = pio_timings[set_pio];
266 it821x_clock_strategy(drive);
267 it821x_program(drive, itdev->pio[unit]);
268 }
269
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279
280
281 static void it821x_tune_mwdma(ide_drive_t *drive, u8 mode_wanted)
282 {
283 ide_hwif_t *hwif = drive->hwif;
284 struct pci_dev *dev = to_pci_dev(hwif->dev);
285 struct it821x_dev *itdev = (void *)ide_get_hwifdata(hwif);
286 u8 unit = drive->dn & 1, channel = hwif->channel, conf;
287
288 static u16 dma[] = { 0x8866, 0x3222, 0x3121 };
289 static u8 mwdma_want[] = { ATA_ANY, ATA_66, ATA_ANY };
290
291 itdev->want[unit][1] = mwdma_want[mode_wanted];
292 itdev->want[unit][0] = 2;
293 itdev->mwdma[unit] = dma[mode_wanted];
294 itdev->udma[unit] = UDMA_OFF;
295
296
297 pci_read_config_byte(dev, 0x50, &conf);
298 if (itdev->timing10)
299 conf |= channel ? 0x60: 0x18;
300 else
301 conf |= 1 << (3 + 2 * channel + unit);
302 pci_write_config_byte(dev, 0x50, conf);
303
304 it821x_clock_strategy(drive);
305
306
307 }
308
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317
318 static void it821x_tune_udma(ide_drive_t *drive, u8 mode_wanted)
319 {
320 ide_hwif_t *hwif = drive->hwif;
321 struct pci_dev *dev = to_pci_dev(hwif->dev);
322 struct it821x_dev *itdev = ide_get_hwifdata(hwif);
323 u8 unit = drive->dn & 1, channel = hwif->channel, conf;
324
325 static u16 udma[] = { 0x4433, 0x4231, 0x3121, 0x2121, 0x1111, 0x2211, 0x1111 };
326 static u8 udma_want[] = { ATA_ANY, ATA_50, ATA_ANY, ATA_66, ATA_66, ATA_50, ATA_66 };
327
328 itdev->want[unit][1] = udma_want[mode_wanted];
329 itdev->want[unit][0] = 3;
330 itdev->mwdma[unit] = MWDMA_OFF;
331 itdev->udma[unit] = udma[mode_wanted];
332 if(mode_wanted >= 5)
333 itdev->udma[unit] |= 0x8080;
334
335
336 pci_read_config_byte(dev, 0x50, &conf);
337 if (itdev->timing10)
338 conf &= channel ? 0x9F: 0xE7;
339 else
340 conf &= ~ (1 << (3 + 2 * channel + unit));
341 pci_write_config_byte(dev, 0x50, conf);
342
343 it821x_clock_strategy(drive);
344 it821x_program_udma(drive, itdev->udma[unit]);
345
346 }
347
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360
361 static void it821x_dma_start(ide_drive_t *drive)
362 {
363 ide_hwif_t *hwif = drive->hwif;
364 struct it821x_dev *itdev = ide_get_hwifdata(hwif);
365 u8 unit = drive->dn & 1;
366
367 if(itdev->mwdma[unit] != MWDMA_OFF)
368 it821x_program(drive, itdev->mwdma[unit]);
369 else if(itdev->udma[unit] != UDMA_OFF && itdev->timing10)
370 it821x_program_udma(drive, itdev->udma[unit]);
371 ide_dma_start(drive);
372 }
373
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381
382
383 static int it821x_dma_end(ide_drive_t *drive)
384 {
385 ide_hwif_t *hwif = drive->hwif;
386 struct it821x_dev *itdev = ide_get_hwifdata(hwif);
387 int ret = ide_dma_end(drive);
388 u8 unit = drive->dn & 1;
389
390 if(itdev->mwdma[unit] != MWDMA_OFF)
391 it821x_program(drive, itdev->pio[unit]);
392 return ret;
393 }
394
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402
403 static void it821x_set_dma_mode(ide_hwif_t *hwif, ide_drive_t *drive)
404 {
405 const u8 speed = drive->dma_mode;
406
407
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410
411
412 if (speed >= XFER_UDMA_0 && speed <= XFER_UDMA_6)
413 it821x_tune_udma(drive, speed - XFER_UDMA_0);
414 else if (speed >= XFER_MW_DMA_0 && speed <= XFER_MW_DMA_2)
415 it821x_tune_mwdma(drive, speed - XFER_MW_DMA_0);
416 }
417
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425
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427 static u8 it821x_cable_detect(ide_hwif_t *hwif)
428 {
429
430 return ATA_CBL_PATA80;
431 }
432
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441
442 static void it821x_quirkproc(ide_drive_t *drive)
443 {
444 struct it821x_dev *itdev = ide_get_hwifdata(drive->hwif);
445 u16 *id = drive->id;
446
447 if (!itdev->smart) {
448
449
450
451
452
453
454 drive->dev_flags |= IDE_DFLAG_UNMASK;
455 } else {
456
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458
459
460
461
462
463
464 if (strstr((char *)&id[ATA_ID_PROD],
465 "Integrated Technology Express")) {
466
467
468
469 id[ATA_ID_CAPABILITY] |= (3 << 8);
470 id[ATA_ID_COMMAND_SET_2] |= 0x0400;
471 id[ATA_ID_CFS_ENABLE_2] |= 0x0400;
472
473 printk(KERN_INFO "%s: IT8212 %sRAID %d volume",
474 drive->name, id[147] ? "Bootable " : "",
475 id[ATA_ID_CSFO]);
476 if (id[ATA_ID_CSFO] != 1)
477 printk(KERN_CONT "(%dK stripe)", id[146]);
478 printk(KERN_CONT ".\n");
479 } else {
480
481
482 id[ATA_ID_FIELD_VALID] &= 3;
483 id[ATA_ID_QUEUE_DEPTH] = 0;
484 id[ATA_ID_COMMAND_SET_1] = 0;
485 id[ATA_ID_COMMAND_SET_2] &= 0xC400;
486 id[ATA_ID_CFSSE] &= 0xC000;
487 id[ATA_ID_CFS_ENABLE_1] = 0;
488 id[ATA_ID_CFS_ENABLE_2] &= 0xC400;
489 id[ATA_ID_CSF_DEFAULT] &= 0xC000;
490 id[127] = 0;
491 id[ATA_ID_DLF] = 0;
492 id[ATA_ID_CSFO] = 0;
493 id[ATA_ID_CFA_POWER] = 0;
494 printk(KERN_INFO "%s: Performing identify fixups.\n",
495 drive->name);
496 }
497
498
499
500
501
502
503 if (ata_id_has_dma(id)) {
504 id[ATA_ID_MWDMA_MODES] |= 0x0101;
505 drive->current_speed = XFER_MW_DMA_0;
506 }
507 }
508
509 }
510
511 static const struct ide_dma_ops it821x_pass_through_dma_ops = {
512 .dma_host_set = ide_dma_host_set,
513 .dma_setup = ide_dma_setup,
514 .dma_start = it821x_dma_start,
515 .dma_end = it821x_dma_end,
516 .dma_test_irq = ide_dma_test_irq,
517 .dma_lost_irq = ide_dma_lost_irq,
518 .dma_timer_expiry = ide_dma_sff_timer_expiry,
519 .dma_sff_read_status = ide_dma_sff_read_status,
520 };
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530
531 static void init_hwif_it821x(ide_hwif_t *hwif)
532 {
533 struct pci_dev *dev = to_pci_dev(hwif->dev);
534 struct ide_host *host = pci_get_drvdata(dev);
535 struct it821x_dev *itdevs = host->host_priv;
536 struct it821x_dev *idev = itdevs + hwif->channel;
537 u8 conf;
538
539 ide_set_hwifdata(hwif, idev);
540
541 pci_read_config_byte(dev, 0x50, &conf);
542 if (conf & 1) {
543 idev->smart = 1;
544 hwif->host_flags |= IDE_HFLAG_NO_ATAPI_DMA;
545
546
547 hwif->rqsize = 256;
548 }
549
550
551 if (conf & (1 << (1 + hwif->channel)))
552 idev->clock_mode = ATA_50;
553 else
554 idev->clock_mode = ATA_66;
555
556 idev->want[0][1] = ATA_ANY;
557 idev->want[1][1] = ATA_ANY;
558
559
560
561
562
563
564 if (dev->revision == 0x10) {
565 idev->timing10 = 1;
566 hwif->host_flags |= IDE_HFLAG_NO_ATAPI_DMA;
567 if (idev->smart == 0)
568 printk(KERN_WARNING DRV_NAME " %s: revision 0x10, "
569 "workarounds activated\n", pci_name(dev));
570 }
571
572 if (idev->smart == 0) {
573
574 hwif->dma_ops = &it821x_pass_through_dma_ops;
575 } else
576 hwif->host_flags |= IDE_HFLAG_NO_SET_MODE;
577
578 if (hwif->dma_base == 0)
579 return;
580
581 hwif->ultra_mask = ATA_UDMA6;
582 hwif->mwdma_mask = ATA_MWDMA2;
583
584
585 if (idev->quirks & QUIRK_VORTEX86) {
586 if (dev->revision == 0x11)
587 hwif->ultra_mask = 0;
588 }
589 }
590
591 static void it8212_disable_raid(struct pci_dev *dev)
592 {
593
594 pci_write_config_byte(dev, 0x5E, 0x01);
595
596
597 pci_write_config_byte(dev, 0x50, 0x00);
598 pci_write_config_word(dev, PCI_COMMAND,
599 PCI_COMMAND_PARITY | PCI_COMMAND_IO |
600 PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
601 pci_write_config_word(dev, 0x40, 0xA0F3);
602
603 pci_write_config_dword(dev,0x4C, 0x02040204);
604 pci_write_config_byte(dev, 0x42, 0x36);
605 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x20);
606 }
607
608 static int init_chipset_it821x(struct pci_dev *dev)
609 {
610 u8 conf;
611 static char *mode[2] = { "pass through", "smart" };
612
613
614 if (it8212_noraid) {
615 printk(KERN_INFO DRV_NAME " %s: forcing bypass mode\n",
616 pci_name(dev));
617 it8212_disable_raid(dev);
618 }
619 pci_read_config_byte(dev, 0x50, &conf);
620 printk(KERN_INFO DRV_NAME " %s: controller in %s mode\n",
621 pci_name(dev), mode[conf & 1]);
622 return 0;
623 }
624
625 static const struct ide_port_ops it821x_port_ops = {
626
627 .set_pio_mode = it821x_set_pio_mode,
628 .set_dma_mode = it821x_set_dma_mode,
629 .quirkproc = it821x_quirkproc,
630 .cable_detect = it821x_cable_detect,
631 };
632
633 static const struct ide_port_info it821x_chipset = {
634 .name = DRV_NAME,
635 .init_chipset = init_chipset_it821x,
636 .init_hwif = init_hwif_it821x,
637 .port_ops = &it821x_port_ops,
638 .pio_mask = ATA_PIO4,
639 };
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641
642
643
644
645
646
647
648
649
650 static int it821x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
651 {
652 struct it821x_dev *itdevs;
653 int rc;
654
655 itdevs = kcalloc(2, sizeof(*itdevs), GFP_KERNEL);
656 if (itdevs == NULL) {
657 printk(KERN_ERR DRV_NAME " %s: out of memory\n", pci_name(dev));
658 return -ENOMEM;
659 }
660
661 itdevs->quirks = id->driver_data;
662
663 rc = ide_pci_init_one(dev, &it821x_chipset, itdevs);
664 if (rc)
665 kfree(itdevs);
666
667 return rc;
668 }
669
670 static void it821x_remove(struct pci_dev *dev)
671 {
672 struct ide_host *host = pci_get_drvdata(dev);
673 struct it821x_dev *itdevs = host->host_priv;
674
675 ide_pci_remove(dev);
676 kfree(itdevs);
677 }
678
679 static const struct pci_device_id it821x_pci_tbl[] = {
680 { PCI_VDEVICE(ITE, PCI_DEVICE_ID_ITE_8211), 0 },
681 { PCI_VDEVICE(ITE, PCI_DEVICE_ID_ITE_8212), 0 },
682 { PCI_VDEVICE(RDC, PCI_DEVICE_ID_RDC_D1010), QUIRK_VORTEX86 },
683 { 0, },
684 };
685
686 MODULE_DEVICE_TABLE(pci, it821x_pci_tbl);
687
688 static struct pci_driver it821x_pci_driver = {
689 .name = "ITE821x IDE",
690 .id_table = it821x_pci_tbl,
691 .probe = it821x_init_one,
692 .remove = it821x_remove,
693 .suspend = ide_pci_suspend,
694 .resume = ide_pci_resume,
695 };
696
697 static int __init it821x_ide_init(void)
698 {
699 return ide_pci_register_driver(&it821x_pci_driver);
700 }
701
702 static void __exit it821x_ide_exit(void)
703 {
704 pci_unregister_driver(&it821x_pci_driver);
705 }
706
707 module_init(it821x_ide_init);
708 module_exit(it821x_ide_exit);
709
710 module_param_named(noraid, it8212_noraid, int, S_IRUGO);
711 MODULE_PARM_DESC(noraid, "Force card into bypass mode");
712
713 MODULE_AUTHOR("Alan Cox");
714 MODULE_DESCRIPTION("PCI driver module for the ITE 821x");
715 MODULE_LICENSE("GPL");