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Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
[deliverable/linux.git] / drivers / ide / pci / cmd64x.c
1 /*
2 * linux/drivers/ide/pci/cmd64x.c Version 1.50 May 10, 2007
3 *
4 * cmd64x.c: Enable interrupts at initialization time on Ultra/PCI machines.
5 * Due to massive hardware bugs, UltraDMA is only supported
6 * on the 646U2 and not on the 646U.
7 *
8 * Copyright (C) 1998 Eddie C. Dost (ecd@skynet.be)
9 * Copyright (C) 1998 David S. Miller (davem@redhat.com)
10 *
11 * Copyright (C) 1999-2002 Andre Hedrick <andre@linux-ide.org>
12 * Copyright (C) 2007 MontaVista Software, Inc. <source@mvista.com>
13 */
14
15 #include <linux/module.h>
16 #include <linux/types.h>
17 #include <linux/pci.h>
18 #include <linux/delay.h>
19 #include <linux/hdreg.h>
20 #include <linux/ide.h>
21 #include <linux/init.h>
22
23 #include <asm/io.h>
24
25 #define DISPLAY_CMD64X_TIMINGS
26
27 #define CMD_DEBUG 0
28
29 #if CMD_DEBUG
30 #define cmdprintk(x...) printk(x)
31 #else
32 #define cmdprintk(x...)
33 #endif
34
35 /*
36 * CMD64x specific registers definition.
37 */
38 #define CFR 0x50
39 #define CFR_INTR_CH0 0x04
40 #define CNTRL 0x51
41 #define CNTRL_ENA_1ST 0x04
42 #define CNTRL_ENA_2ND 0x08
43 #define CNTRL_DIS_RA0 0x40
44 #define CNTRL_DIS_RA1 0x80
45
46 #define CMDTIM 0x52
47 #define ARTTIM0 0x53
48 #define DRWTIM0 0x54
49 #define ARTTIM1 0x55
50 #define DRWTIM1 0x56
51 #define ARTTIM23 0x57
52 #define ARTTIM23_DIS_RA2 0x04
53 #define ARTTIM23_DIS_RA3 0x08
54 #define ARTTIM23_INTR_CH1 0x10
55 #define DRWTIM2 0x58
56 #define BRST 0x59
57 #define DRWTIM3 0x5b
58
59 #define BMIDECR0 0x70
60 #define MRDMODE 0x71
61 #define MRDMODE_INTR_CH0 0x04
62 #define MRDMODE_INTR_CH1 0x08
63 #define MRDMODE_BLK_CH0 0x10
64 #define MRDMODE_BLK_CH1 0x20
65 #define BMIDESR0 0x72
66 #define UDIDETCR0 0x73
67 #define DTPR0 0x74
68 #define BMIDECR1 0x78
69 #define BMIDECSR 0x79
70 #define BMIDESR1 0x7A
71 #define UDIDETCR1 0x7B
72 #define DTPR1 0x7C
73
74 #if defined(DISPLAY_CMD64X_TIMINGS) && defined(CONFIG_IDE_PROC_FS)
75 #include <linux/stat.h>
76 #include <linux/proc_fs.h>
77
78 static u8 cmd64x_proc = 0;
79
80 #define CMD_MAX_DEVS 5
81
82 static struct pci_dev *cmd_devs[CMD_MAX_DEVS];
83 static int n_cmd_devs;
84
85 static char * print_cmd64x_get_info (char *buf, struct pci_dev *dev, int index)
86 {
87 char *p = buf;
88 u8 reg72 = 0, reg73 = 0; /* primary */
89 u8 reg7a = 0, reg7b = 0; /* secondary */
90 u8 reg50 = 1, reg51 = 1, reg57 = 0, reg71 = 0; /* extra */
91
92 p += sprintf(p, "\nController: %d\n", index);
93 p += sprintf(p, "PCI-%x Chipset.\n", dev->device);
94
95 (void) pci_read_config_byte(dev, CFR, &reg50);
96 (void) pci_read_config_byte(dev, CNTRL, &reg51);
97 (void) pci_read_config_byte(dev, ARTTIM23, &reg57);
98 (void) pci_read_config_byte(dev, MRDMODE, &reg71);
99 (void) pci_read_config_byte(dev, BMIDESR0, &reg72);
100 (void) pci_read_config_byte(dev, UDIDETCR0, &reg73);
101 (void) pci_read_config_byte(dev, BMIDESR1, &reg7a);
102 (void) pci_read_config_byte(dev, UDIDETCR1, &reg7b);
103
104 /* PCI0643/6 originally didn't have the primary channel enable bit */
105 if ((dev->device == PCI_DEVICE_ID_CMD_643) ||
106 (dev->device == PCI_DEVICE_ID_CMD_646 && dev->revision < 3))
107 reg51 |= CNTRL_ENA_1ST;
108
109 p += sprintf(p, "---------------- Primary Channel "
110 "---------------- Secondary Channel ------------\n");
111 p += sprintf(p, " %s %s\n",
112 (reg51 & CNTRL_ENA_1ST) ? "enabled " : "disabled",
113 (reg51 & CNTRL_ENA_2ND) ? "enabled " : "disabled");
114 p += sprintf(p, "---------------- drive0 --------- drive1 "
115 "-------- drive0 --------- drive1 ------\n");
116 p += sprintf(p, "DMA enabled: %s %s"
117 " %s %s\n",
118 (reg72 & 0x20) ? "yes" : "no ", (reg72 & 0x40) ? "yes" : "no ",
119 (reg7a & 0x20) ? "yes" : "no ", (reg7a & 0x40) ? "yes" : "no ");
120 p += sprintf(p, "UltraDMA mode: %s (%c) %s (%c)",
121 ( reg73 & 0x01) ? " on" : "off",
122 ((reg73 & 0x30) == 0x30) ? ((reg73 & 0x04) ? '3' : '0') :
123 ((reg73 & 0x30) == 0x20) ? ((reg73 & 0x04) ? '3' : '1') :
124 ((reg73 & 0x30) == 0x10) ? ((reg73 & 0x04) ? '4' : '2') :
125 ((reg73 & 0x30) == 0x00) ? ((reg73 & 0x04) ? '5' : '2') : '?',
126 ( reg73 & 0x02) ? " on" : "off",
127 ((reg73 & 0xC0) == 0xC0) ? ((reg73 & 0x08) ? '3' : '0') :
128 ((reg73 & 0xC0) == 0x80) ? ((reg73 & 0x08) ? '3' : '1') :
129 ((reg73 & 0xC0) == 0x40) ? ((reg73 & 0x08) ? '4' : '2') :
130 ((reg73 & 0xC0) == 0x00) ? ((reg73 & 0x08) ? '5' : '2') : '?');
131 p += sprintf(p, " %s (%c) %s (%c)\n",
132 ( reg7b & 0x01) ? " on" : "off",
133 ((reg7b & 0x30) == 0x30) ? ((reg7b & 0x04) ? '3' : '0') :
134 ((reg7b & 0x30) == 0x20) ? ((reg7b & 0x04) ? '3' : '1') :
135 ((reg7b & 0x30) == 0x10) ? ((reg7b & 0x04) ? '4' : '2') :
136 ((reg7b & 0x30) == 0x00) ? ((reg7b & 0x04) ? '5' : '2') : '?',
137 ( reg7b & 0x02) ? " on" : "off",
138 ((reg7b & 0xC0) == 0xC0) ? ((reg7b & 0x08) ? '3' : '0') :
139 ((reg7b & 0xC0) == 0x80) ? ((reg7b & 0x08) ? '3' : '1') :
140 ((reg7b & 0xC0) == 0x40) ? ((reg7b & 0x08) ? '4' : '2') :
141 ((reg7b & 0xC0) == 0x00) ? ((reg7b & 0x08) ? '5' : '2') : '?');
142 p += sprintf(p, "Interrupt: %s, %s %s, %s\n",
143 (reg71 & MRDMODE_BLK_CH0 ) ? "blocked" : "enabled",
144 (reg50 & CFR_INTR_CH0 ) ? "pending" : "clear ",
145 (reg71 & MRDMODE_BLK_CH1 ) ? "blocked" : "enabled",
146 (reg57 & ARTTIM23_INTR_CH1) ? "pending" : "clear ");
147
148 return (char *)p;
149 }
150
151 static int cmd64x_get_info (char *buffer, char **addr, off_t offset, int count)
152 {
153 char *p = buffer;
154 int i;
155
156 for (i = 0; i < n_cmd_devs; i++) {
157 struct pci_dev *dev = cmd_devs[i];
158 p = print_cmd64x_get_info(p, dev, i);
159 }
160 return p-buffer; /* => must be less than 4k! */
161 }
162
163 #endif /* defined(DISPLAY_CMD64X_TIMINGS) && defined(CONFIG_IDE_PROC_FS) */
164
165 static u8 quantize_timing(int timing, int quant)
166 {
167 return (timing + quant - 1) / quant;
168 }
169
170 /*
171 * This routine calculates active/recovery counts and then writes them into
172 * the chipset registers.
173 */
174 static void program_cycle_times (ide_drive_t *drive, int cycle_time, int active_time)
175 {
176 struct pci_dev *dev = HWIF(drive)->pci_dev;
177 int clock_time = 1000 / system_bus_clock();
178 u8 cycle_count, active_count, recovery_count, drwtim;
179 static const u8 recovery_values[] =
180 {15, 15, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 0};
181 static const u8 drwtim_regs[4] = {DRWTIM0, DRWTIM1, DRWTIM2, DRWTIM3};
182
183 cmdprintk("program_cycle_times parameters: total=%d, active=%d\n",
184 cycle_time, active_time);
185
186 cycle_count = quantize_timing( cycle_time, clock_time);
187 active_count = quantize_timing(active_time, clock_time);
188 recovery_count = cycle_count - active_count;
189
190 /*
191 * In case we've got too long recovery phase, try to lengthen
192 * the active phase
193 */
194 if (recovery_count > 16) {
195 active_count += recovery_count - 16;
196 recovery_count = 16;
197 }
198 if (active_count > 16) /* shouldn't actually happen... */
199 active_count = 16;
200
201 cmdprintk("Final counts: total=%d, active=%d, recovery=%d\n",
202 cycle_count, active_count, recovery_count);
203
204 /*
205 * Convert values to internal chipset representation
206 */
207 recovery_count = recovery_values[recovery_count];
208 active_count &= 0x0f;
209
210 /* Program the active/recovery counts into the DRWTIM register */
211 drwtim = (active_count << 4) | recovery_count;
212 (void) pci_write_config_byte(dev, drwtim_regs[drive->dn], drwtim);
213 cmdprintk("Write 0x%02x to reg 0x%x\n", drwtim, drwtim_regs[drive->dn]);
214 }
215
216 /*
217 * This routine writes into the chipset registers
218 * PIO setup/active/recovery timings.
219 */
220 static void cmd64x_tune_pio(ide_drive_t *drive, const u8 pio)
221 {
222 ide_hwif_t *hwif = HWIF(drive);
223 struct pci_dev *dev = hwif->pci_dev;
224 unsigned int cycle_time;
225 u8 setup_count, arttim = 0;
226
227 static const u8 setup_values[] = {0x40, 0x40, 0x40, 0x80, 0, 0xc0};
228 static const u8 arttim_regs[4] = {ARTTIM0, ARTTIM1, ARTTIM23, ARTTIM23};
229
230 cycle_time = ide_pio_cycle_time(drive, pio);
231
232 program_cycle_times(drive, cycle_time,
233 ide_pio_timings[pio].active_time);
234
235 setup_count = quantize_timing(ide_pio_timings[pio].setup_time,
236 1000 / system_bus_clock());
237
238 /*
239 * The primary channel has individual address setup timing registers
240 * for each drive and the hardware selects the slowest timing itself.
241 * The secondary channel has one common register and we have to select
242 * the slowest address setup timing ourselves.
243 */
244 if (hwif->channel) {
245 ide_drive_t *drives = hwif->drives;
246
247 drive->drive_data = setup_count;
248 setup_count = max(drives[0].drive_data, drives[1].drive_data);
249 }
250
251 if (setup_count > 5) /* shouldn't actually happen... */
252 setup_count = 5;
253 cmdprintk("Final address setup count: %d\n", setup_count);
254
255 /*
256 * Program the address setup clocks into the ARTTIM registers.
257 * Avoid clearing the secondary channel's interrupt bit.
258 */
259 (void) pci_read_config_byte (dev, arttim_regs[drive->dn], &arttim);
260 if (hwif->channel)
261 arttim &= ~ARTTIM23_INTR_CH1;
262 arttim &= ~0xc0;
263 arttim |= setup_values[setup_count];
264 (void) pci_write_config_byte(dev, arttim_regs[drive->dn], arttim);
265 cmdprintk("Write 0x%02x to reg 0x%x\n", arttim, arttim_regs[drive->dn]);
266 }
267
268 /*
269 * Attempts to set drive's PIO mode.
270 * Special cases are 8: prefetch off, 9: prefetch on (both never worked)
271 */
272
273 static void cmd64x_set_pio_mode(ide_drive_t *drive, const u8 pio)
274 {
275 /*
276 * Filter out the prefetch control values
277 * to prevent PIO5 from being programmed
278 */
279 if (pio == 8 || pio == 9)
280 return;
281
282 cmd64x_tune_pio(drive, pio);
283 }
284
285 static void cmd64x_set_dma_mode(ide_drive_t *drive, const u8 speed)
286 {
287 ide_hwif_t *hwif = HWIF(drive);
288 struct pci_dev *dev = hwif->pci_dev;
289 u8 unit = drive->dn & 0x01;
290 u8 regU = 0, pciU = hwif->channel ? UDIDETCR1 : UDIDETCR0;
291
292 if (speed >= XFER_SW_DMA_0) {
293 (void) pci_read_config_byte(dev, pciU, &regU);
294 regU &= ~(unit ? 0xCA : 0x35);
295 }
296
297 switch(speed) {
298 case XFER_UDMA_5:
299 regU |= unit ? 0x0A : 0x05;
300 break;
301 case XFER_UDMA_4:
302 regU |= unit ? 0x4A : 0x15;
303 break;
304 case XFER_UDMA_3:
305 regU |= unit ? 0x8A : 0x25;
306 break;
307 case XFER_UDMA_2:
308 regU |= unit ? 0x42 : 0x11;
309 break;
310 case XFER_UDMA_1:
311 regU |= unit ? 0x82 : 0x21;
312 break;
313 case XFER_UDMA_0:
314 regU |= unit ? 0xC2 : 0x31;
315 break;
316 case XFER_MW_DMA_2:
317 program_cycle_times(drive, 120, 70);
318 break;
319 case XFER_MW_DMA_1:
320 program_cycle_times(drive, 150, 80);
321 break;
322 case XFER_MW_DMA_0:
323 program_cycle_times(drive, 480, 215);
324 break;
325 default:
326 return;
327 }
328
329 if (speed >= XFER_SW_DMA_0)
330 (void) pci_write_config_byte(dev, pciU, regU);
331 }
332
333 static int cmd64x_config_drive_for_dma (ide_drive_t *drive)
334 {
335 if (ide_tune_dma(drive))
336 return 0;
337
338 if (ide_use_fast_pio(drive))
339 ide_set_max_pio(drive);
340
341 return -1;
342 }
343
344 static int cmd648_ide_dma_end (ide_drive_t *drive)
345 {
346 ide_hwif_t *hwif = HWIF(drive);
347 int err = __ide_dma_end(drive);
348 u8 irq_mask = hwif->channel ? MRDMODE_INTR_CH1 :
349 MRDMODE_INTR_CH0;
350 u8 mrdmode = inb(hwif->dma_master + 0x01);
351
352 /* clear the interrupt bit */
353 outb(mrdmode | irq_mask, hwif->dma_master + 0x01);
354
355 return err;
356 }
357
358 static int cmd64x_ide_dma_end (ide_drive_t *drive)
359 {
360 ide_hwif_t *hwif = HWIF(drive);
361 struct pci_dev *dev = hwif->pci_dev;
362 int irq_reg = hwif->channel ? ARTTIM23 : CFR;
363 u8 irq_mask = hwif->channel ? ARTTIM23_INTR_CH1 :
364 CFR_INTR_CH0;
365 u8 irq_stat = 0;
366 int err = __ide_dma_end(drive);
367
368 (void) pci_read_config_byte(dev, irq_reg, &irq_stat);
369 /* clear the interrupt bit */
370 (void) pci_write_config_byte(dev, irq_reg, irq_stat | irq_mask);
371
372 return err;
373 }
374
375 static int cmd648_ide_dma_test_irq (ide_drive_t *drive)
376 {
377 ide_hwif_t *hwif = HWIF(drive);
378 u8 irq_mask = hwif->channel ? MRDMODE_INTR_CH1 :
379 MRDMODE_INTR_CH0;
380 u8 dma_stat = inb(hwif->dma_status);
381 u8 mrdmode = inb(hwif->dma_master + 0x01);
382
383 #ifdef DEBUG
384 printk("%s: dma_stat: 0x%02x mrdmode: 0x%02x irq_mask: 0x%02x\n",
385 drive->name, dma_stat, mrdmode, irq_mask);
386 #endif
387 if (!(mrdmode & irq_mask))
388 return 0;
389
390 /* return 1 if INTR asserted */
391 if (dma_stat & 4)
392 return 1;
393
394 return 0;
395 }
396
397 static int cmd64x_ide_dma_test_irq (ide_drive_t *drive)
398 {
399 ide_hwif_t *hwif = HWIF(drive);
400 struct pci_dev *dev = hwif->pci_dev;
401 int irq_reg = hwif->channel ? ARTTIM23 : CFR;
402 u8 irq_mask = hwif->channel ? ARTTIM23_INTR_CH1 :
403 CFR_INTR_CH0;
404 u8 dma_stat = inb(hwif->dma_status);
405 u8 irq_stat = 0;
406
407 (void) pci_read_config_byte(dev, irq_reg, &irq_stat);
408
409 #ifdef DEBUG
410 printk("%s: dma_stat: 0x%02x irq_stat: 0x%02x irq_mask: 0x%02x\n",
411 drive->name, dma_stat, irq_stat, irq_mask);
412 #endif
413 if (!(irq_stat & irq_mask))
414 return 0;
415
416 /* return 1 if INTR asserted */
417 if (dma_stat & 4)
418 return 1;
419
420 return 0;
421 }
422
423 /*
424 * ASUS P55T2P4D with CMD646 chipset revision 0x01 requires the old
425 * event order for DMA transfers.
426 */
427
428 static int cmd646_1_ide_dma_end (ide_drive_t *drive)
429 {
430 ide_hwif_t *hwif = HWIF(drive);
431 u8 dma_stat = 0, dma_cmd = 0;
432
433 drive->waiting_for_dma = 0;
434 /* get DMA status */
435 dma_stat = inb(hwif->dma_status);
436 /* read DMA command state */
437 dma_cmd = inb(hwif->dma_command);
438 /* stop DMA */
439 outb(dma_cmd & ~1, hwif->dma_command);
440 /* clear the INTR & ERROR bits */
441 outb(dma_stat | 6, hwif->dma_status);
442 /* and free any DMA resources */
443 ide_destroy_dmatable(drive);
444 /* verify good DMA status */
445 return (dma_stat & 7) != 4;
446 }
447
448 static unsigned int __devinit init_chipset_cmd64x(struct pci_dev *dev, const char *name)
449 {
450 u8 mrdmode = 0;
451
452 if (dev->device == PCI_DEVICE_ID_CMD_646) {
453 u8 rev = 0;
454
455 pci_read_config_byte(dev, PCI_REVISION_ID, &rev);
456
457 switch (rev) {
458 case 0x07:
459 case 0x05:
460 printk("%s: UltraDMA capable\n", name);
461 break;
462 case 0x03:
463 default:
464 printk("%s: MultiWord DMA force limited\n", name);
465 break;
466 case 0x01:
467 printk("%s: MultiWord DMA limited, "
468 "IRQ workaround enabled\n", name);
469 break;
470 }
471 }
472
473 /* Set a good latency timer and cache line size value. */
474 (void) pci_write_config_byte(dev, PCI_LATENCY_TIMER, 64);
475 /* FIXME: pci_set_master() to ensure a good latency timer value */
476
477 /*
478 * Enable interrupts, select MEMORY READ LINE for reads.
479 *
480 * NOTE: although not mentioned in the PCI0646U specs,
481 * bits 0-1 are write only and won't be read back as
482 * set or not -- PCI0646U2 specs clarify this point.
483 */
484 (void) pci_read_config_byte (dev, MRDMODE, &mrdmode);
485 mrdmode &= ~0x30;
486 (void) pci_write_config_byte(dev, MRDMODE, (mrdmode | 0x02));
487
488 #if defined(DISPLAY_CMD64X_TIMINGS) && defined(CONFIG_IDE_PROC_FS)
489
490 cmd_devs[n_cmd_devs++] = dev;
491
492 if (!cmd64x_proc) {
493 cmd64x_proc = 1;
494 ide_pci_create_host_proc("cmd64x", cmd64x_get_info);
495 }
496 #endif /* DISPLAY_CMD64X_TIMINGS && CONFIG_IDE_PROC_FS */
497
498 return 0;
499 }
500
501 static u8 __devinit ata66_cmd64x(ide_hwif_t *hwif)
502 {
503 struct pci_dev *dev = hwif->pci_dev;
504 u8 bmidecsr = 0, mask = hwif->channel ? 0x02 : 0x01;
505
506 switch (dev->device) {
507 case PCI_DEVICE_ID_CMD_648:
508 case PCI_DEVICE_ID_CMD_649:
509 pci_read_config_byte(dev, BMIDECSR, &bmidecsr);
510 return (bmidecsr & mask) ? ATA_CBL_PATA80 : ATA_CBL_PATA40;
511 default:
512 return ATA_CBL_PATA40;
513 }
514 }
515
516 static void __devinit init_hwif_cmd64x(ide_hwif_t *hwif)
517 {
518 struct pci_dev *dev = hwif->pci_dev;
519 u8 rev = 0;
520
521 pci_read_config_byte(dev, PCI_REVISION_ID, &rev);
522
523 hwif->set_pio_mode = &cmd64x_set_pio_mode;
524 hwif->set_dma_mode = &cmd64x_set_dma_mode;
525
526 hwif->drives[0].autotune = hwif->drives[1].autotune = 1;
527
528 if (!hwif->dma_base)
529 return;
530
531 hwif->atapi_dma = 1;
532 hwif->mwdma_mask = 0x07;
533 hwif->ultra_mask = hwif->cds->udma_mask;
534
535 /*
536 * UltraDMA only supported on PCI646U and PCI646U2, which
537 * correspond to revisions 0x03, 0x05 and 0x07 respectively.
538 * Actually, although the CMD tech support people won't
539 * tell me the details, the 0x03 revision cannot support
540 * UDMA correctly without hardware modifications, and even
541 * then it only works with Quantum disks due to some
542 * hold time assumptions in the 646U part which are fixed
543 * in the 646U2.
544 *
545 * So we only do UltraDMA on revision 0x05 and 0x07 chipsets.
546 */
547 if (dev->device == PCI_DEVICE_ID_CMD_646 && rev < 5)
548 hwif->ultra_mask = 0x00;
549
550 hwif->ide_dma_check = &cmd64x_config_drive_for_dma;
551
552 if (hwif->cbl != ATA_CBL_PATA40_SHORT)
553 hwif->cbl = ata66_cmd64x(hwif);
554
555 switch (dev->device) {
556 case PCI_DEVICE_ID_CMD_648:
557 case PCI_DEVICE_ID_CMD_649:
558 alt_irq_bits:
559 hwif->ide_dma_end = &cmd648_ide_dma_end;
560 hwif->ide_dma_test_irq = &cmd648_ide_dma_test_irq;
561 break;
562 case PCI_DEVICE_ID_CMD_646:
563 hwif->chipset = ide_cmd646;
564 if (rev == 0x01) {
565 hwif->ide_dma_end = &cmd646_1_ide_dma_end;
566 break;
567 } else if (rev >= 0x03)
568 goto alt_irq_bits;
569 /* fall thru */
570 default:
571 hwif->ide_dma_end = &cmd64x_ide_dma_end;
572 hwif->ide_dma_test_irq = &cmd64x_ide_dma_test_irq;
573 break;
574 }
575
576 if (!noautodma)
577 hwif->autodma = 1;
578 hwif->drives[0].autodma = hwif->drives[1].autodma = hwif->autodma;
579 }
580
581 static int __devinit init_setup_cmd64x(struct pci_dev *dev, ide_pci_device_t *d)
582 {
583 return ide_setup_pci_device(dev, d);
584 }
585
586 static int __devinit init_setup_cmd646(struct pci_dev *dev, ide_pci_device_t *d)
587 {
588 /*
589 * The original PCI0646 didn't have the primary channel enable bit,
590 * it appeared starting with PCI0646U (i.e. revision ID 3).
591 */
592 if (dev->revision < 3)
593 d->enablebits[0].reg = 0;
594
595 return ide_setup_pci_device(dev, d);
596 }
597
598 static ide_pci_device_t cmd64x_chipsets[] __devinitdata = {
599 { /* 0 */
600 .name = "CMD643",
601 .init_setup = init_setup_cmd64x,
602 .init_chipset = init_chipset_cmd64x,
603 .init_hwif = init_hwif_cmd64x,
604 .autodma = AUTODMA,
605 .enablebits = {{0x00,0x00,0x00}, {0x51,0x08,0x08}},
606 .bootable = ON_BOARD,
607 .host_flags = IDE_HFLAG_ABUSE_PREFETCH,
608 .pio_mask = ATA_PIO5,
609 .udma_mask = 0x00, /* no udma */
610 },{ /* 1 */
611 .name = "CMD646",
612 .init_setup = init_setup_cmd646,
613 .init_chipset = init_chipset_cmd64x,
614 .init_hwif = init_hwif_cmd64x,
615 .autodma = AUTODMA,
616 .enablebits = {{0x51,0x04,0x04}, {0x51,0x08,0x08}},
617 .bootable = ON_BOARD,
618 .host_flags = IDE_HFLAG_ABUSE_PREFETCH,
619 .pio_mask = ATA_PIO5,
620 .udma_mask = 0x07, /* udma0-2 */
621 },{ /* 2 */
622 .name = "CMD648",
623 .init_setup = init_setup_cmd64x,
624 .init_chipset = init_chipset_cmd64x,
625 .init_hwif = init_hwif_cmd64x,
626 .autodma = AUTODMA,
627 .enablebits = {{0x51,0x04,0x04}, {0x51,0x08,0x08}},
628 .bootable = ON_BOARD,
629 .host_flags = IDE_HFLAG_ABUSE_PREFETCH,
630 .pio_mask = ATA_PIO5,
631 .udma_mask = 0x1f, /* udma0-4 */
632 },{ /* 3 */
633 .name = "CMD649",
634 .init_setup = init_setup_cmd64x,
635 .init_chipset = init_chipset_cmd64x,
636 .init_hwif = init_hwif_cmd64x,
637 .autodma = AUTODMA,
638 .enablebits = {{0x51,0x04,0x04}, {0x51,0x08,0x08}},
639 .bootable = ON_BOARD,
640 .host_flags = IDE_HFLAG_ABUSE_PREFETCH,
641 .pio_mask = ATA_PIO5,
642 .udma_mask = 0x3f, /* udma0-5 */
643 }
644 };
645
646 /*
647 * We may have to modify enablebits for PCI0646, so we'd better pass
648 * a local copy of the ide_pci_device_t structure down the call chain...
649 */
650 static int __devinit cmd64x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
651 {
652 ide_pci_device_t d = cmd64x_chipsets[id->driver_data];
653
654 return d.init_setup(dev, &d);
655 }
656
657 static struct pci_device_id cmd64x_pci_tbl[] = {
658 { PCI_VENDOR_ID_CMD, PCI_DEVICE_ID_CMD_643, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
659 { PCI_VENDOR_ID_CMD, PCI_DEVICE_ID_CMD_646, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1},
660 { PCI_VENDOR_ID_CMD, PCI_DEVICE_ID_CMD_648, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2},
661 { PCI_VENDOR_ID_CMD, PCI_DEVICE_ID_CMD_649, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3},
662 { 0, },
663 };
664 MODULE_DEVICE_TABLE(pci, cmd64x_pci_tbl);
665
666 static struct pci_driver driver = {
667 .name = "CMD64x_IDE",
668 .id_table = cmd64x_pci_tbl,
669 .probe = cmd64x_init_one,
670 };
671
672 static int __init cmd64x_ide_init(void)
673 {
674 return ide_pci_register_driver(&driver);
675 }
676
677 module_init(cmd64x_ide_init);
678
679 MODULE_AUTHOR("Eddie Dost, David Miller, Andre Hedrick");
680 MODULE_DESCRIPTION("PCI driver module for CMD64x IDE");
681 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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