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1 /*
2 * linux/drivers/ide/pci/pdc202xx_old.c Version 0.50 Mar 3, 2007
3 *
4 * Copyright (C) 1998-2002 Andre Hedrick <andre@linux-ide.org>
5 * Copyright (C) 2006-2007 MontaVista Software, Inc.
6 * Copyright (C) 2007 Bartlomiej Zolnierkiewicz
7 *
8 * Promise Ultra33 cards with BIOS v1.20 through 1.28 will need this
9 * compiled into the kernel if you have more than one card installed.
10 * Note that BIOS v1.29 is reported to fix the problem. Since this is
11 * safe chipset tuning, including this support is harmless
12 *
13 * Promise Ultra66 cards with BIOS v1.11 this
14 * compiled into the kernel if you have more than one card installed.
15 *
16 * Promise Ultra100 cards.
17 *
18 * The latest chipset code will support the following ::
19 * Three Ultra33 controllers and 12 drives.
20 * 8 are UDMA supported and 4 are limited to DMA mode 2 multi-word.
21 * The 8/4 ratio is a BIOS code limit by promise.
22 *
23 * UNLESS you enable "CONFIG_PDC202XX_BURST"
24 *
25 */
26
27 /*
28 * Portions Copyright (C) 1999 Promise Technology, Inc.
29 * Author: Frank Tiernan (frankt@promise.com)
30 * Released under terms of General Public License
31 */
32
33 #include <linux/types.h>
34 #include <linux/module.h>
35 #include <linux/kernel.h>
36 #include <linux/delay.h>
37 #include <linux/timer.h>
38 #include <linux/mm.h>
39 #include <linux/ioport.h>
40 #include <linux/blkdev.h>
41 #include <linux/hdreg.h>
42 #include <linux/interrupt.h>
43 #include <linux/pci.h>
44 #include <linux/init.h>
45 #include <linux/ide.h>
46
47 #include <asm/io.h>
48 #include <asm/irq.h>
49
50 #define PDC202XX_DEBUG_DRIVE_INFO 0
51
52 static const char *pdc_quirk_drives[] = {
53 "QUANTUM FIREBALLlct08 08",
54 "QUANTUM FIREBALLP KA6.4",
55 "QUANTUM FIREBALLP KA9.1",
56 "QUANTUM FIREBALLP LM20.4",
57 "QUANTUM FIREBALLP KX13.6",
58 "QUANTUM FIREBALLP KX20.5",
59 "QUANTUM FIREBALLP KX27.3",
60 "QUANTUM FIREBALLP LM20.5",
61 NULL
62 };
63
64 static void pdc_old_disable_66MHz_clock(ide_hwif_t *);
65
66 static int pdc202xx_tune_chipset (ide_drive_t *drive, u8 xferspeed)
67 {
68 ide_hwif_t *hwif = HWIF(drive);
69 struct pci_dev *dev = hwif->pci_dev;
70 u8 drive_pci = 0x60 + (drive->dn << 2);
71 u8 speed = ide_rate_filter(drive, xferspeed);
72
73 u8 AP = 0, BP = 0, CP = 0;
74 u8 TA = 0, TB = 0, TC = 0;
75
76 #if PDC202XX_DEBUG_DRIVE_INFO
77 u32 drive_conf = 0;
78 pci_read_config_dword(dev, drive_pci, &drive_conf);
79 #endif
80
81 /*
82 * TODO: do this once per channel
83 */
84 if (dev->device != PCI_DEVICE_ID_PROMISE_20246)
85 pdc_old_disable_66MHz_clock(hwif);
86
87 pci_read_config_byte(dev, drive_pci, &AP);
88 pci_read_config_byte(dev, drive_pci + 1, &BP);
89 pci_read_config_byte(dev, drive_pci + 2, &CP);
90
91 switch(speed) {
92 case XFER_UDMA_5:
93 case XFER_UDMA_4: TB = 0x20; TC = 0x01; break;
94 case XFER_UDMA_2: TB = 0x20; TC = 0x01; break;
95 case XFER_UDMA_3:
96 case XFER_UDMA_1: TB = 0x40; TC = 0x02; break;
97 case XFER_UDMA_0:
98 case XFER_MW_DMA_2: TB = 0x60; TC = 0x03; break;
99 case XFER_MW_DMA_1: TB = 0x60; TC = 0x04; break;
100 case XFER_MW_DMA_0: TB = 0xE0; TC = 0x0F; break;
101 case XFER_SW_DMA_2: TB = 0x60; TC = 0x05; break;
102 case XFER_SW_DMA_1: TB = 0x80; TC = 0x06; break;
103 case XFER_SW_DMA_0: TB = 0xC0; TC = 0x0B; break;
104 case XFER_PIO_4: TA = 0x01; TB = 0x04; break;
105 case XFER_PIO_3: TA = 0x02; TB = 0x06; break;
106 case XFER_PIO_2: TA = 0x03; TB = 0x08; break;
107 case XFER_PIO_1: TA = 0x05; TB = 0x0C; break;
108 case XFER_PIO_0:
109 default: TA = 0x09; TB = 0x13; break;
110 }
111
112 if (speed < XFER_SW_DMA_0) {
113 /*
114 * preserve SYNC_INT / ERDDY_EN bits while clearing
115 * Prefetch_EN / IORDY_EN / PA[3:0] bits of register A
116 */
117 AP &= ~0x3f;
118 if (drive->id->capability & 4)
119 AP |= 0x20; /* set IORDY_EN bit */
120 if (drive->media == ide_disk)
121 AP |= 0x10; /* set Prefetch_EN bit */
122 /* clear PB[4:0] bits of register B */
123 BP &= ~0x1f;
124 pci_write_config_byte(dev, drive_pci, AP | TA);
125 pci_write_config_byte(dev, drive_pci + 1, BP | TB);
126 } else {
127 /* clear MB[2:0] bits of register B */
128 BP &= ~0xe0;
129 /* clear MC[3:0] bits of register C */
130 CP &= ~0x0f;
131 pci_write_config_byte(dev, drive_pci + 1, BP | TB);
132 pci_write_config_byte(dev, drive_pci + 2, CP | TC);
133 }
134
135 #if PDC202XX_DEBUG_DRIVE_INFO
136 printk(KERN_DEBUG "%s: %s drive%d 0x%08x ",
137 drive->name, ide_xfer_verbose(speed),
138 drive->dn, drive_conf);
139 pci_read_config_dword(dev, drive_pci, &drive_conf);
140 printk("0x%08x\n", drive_conf);
141 #endif
142
143 return ide_config_drive_speed(drive, speed);
144 }
145
146 static void pdc202xx_tune_drive(ide_drive_t *drive, u8 pio)
147 {
148 pio = ide_get_best_pio_mode(drive, pio, 4, NULL);
149 pdc202xx_tune_chipset(drive, XFER_PIO_0 + pio);
150 }
151
152 static u8 pdc202xx_old_cable_detect (ide_hwif_t *hwif)
153 {
154 u16 CIS = 0, mask = (hwif->channel) ? (1<<11) : (1<<10);
155
156 pci_read_config_word(hwif->pci_dev, 0x50, &CIS);
157
158 return (CIS & mask) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
159 }
160
161 /*
162 * Set the control register to use the 66MHz system
163 * clock for UDMA 3/4/5 mode operation when necessary.
164 *
165 * FIXME: this register is shared by both channels, some locking is needed
166 *
167 * It may also be possible to leave the 66MHz clock on
168 * and readjust the timing parameters.
169 */
170 static void pdc_old_enable_66MHz_clock(ide_hwif_t *hwif)
171 {
172 unsigned long clock_reg = hwif->dma_master + 0x11;
173 u8 clock = inb(clock_reg);
174
175 outb(clock | (hwif->channel ? 0x08 : 0x02), clock_reg);
176 }
177
178 static void pdc_old_disable_66MHz_clock(ide_hwif_t *hwif)
179 {
180 unsigned long clock_reg = hwif->dma_master + 0x11;
181 u8 clock = inb(clock_reg);
182
183 outb(clock & ~(hwif->channel ? 0x08 : 0x02), clock_reg);
184 }
185
186 static int pdc202xx_config_drive_xfer_rate (ide_drive_t *drive)
187 {
188 drive->init_speed = 0;
189
190 if (ide_tune_dma(drive))
191 return 0;
192
193 if (ide_use_fast_pio(drive))
194 pdc202xx_tune_drive(drive, 255);
195
196 return -1;
197 }
198
199 static int pdc202xx_quirkproc (ide_drive_t *drive)
200 {
201 const char **list, *model = drive->id->model;
202
203 for (list = pdc_quirk_drives; *list != NULL; list++)
204 if (strstr(model, *list) != NULL)
205 return 2;
206 return 0;
207 }
208
209 static void pdc202xx_old_ide_dma_start(ide_drive_t *drive)
210 {
211 if (drive->current_speed > XFER_UDMA_2)
212 pdc_old_enable_66MHz_clock(drive->hwif);
213 if (drive->media != ide_disk || drive->addressing == 1) {
214 struct request *rq = HWGROUP(drive)->rq;
215 ide_hwif_t *hwif = HWIF(drive);
216 unsigned long high_16 = hwif->dma_master;
217 unsigned long atapi_reg = high_16 + (hwif->channel ? 0x24 : 0x20);
218 u32 word_count = 0;
219 u8 clock = inb(high_16 + 0x11);
220
221 outb(clock | (hwif->channel ? 0x08 : 0x02), high_16 + 0x11);
222 word_count = (rq->nr_sectors << 8);
223 word_count = (rq_data_dir(rq) == READ) ?
224 word_count | 0x05000000 :
225 word_count | 0x06000000;
226 outl(word_count, atapi_reg);
227 }
228 ide_dma_start(drive);
229 }
230
231 static int pdc202xx_old_ide_dma_end(ide_drive_t *drive)
232 {
233 if (drive->media != ide_disk || drive->addressing == 1) {
234 ide_hwif_t *hwif = HWIF(drive);
235 unsigned long high_16 = hwif->dma_master;
236 unsigned long atapi_reg = high_16 + (hwif->channel ? 0x24 : 0x20);
237 u8 clock = 0;
238
239 outl(0, atapi_reg); /* zero out extra */
240 clock = inb(high_16 + 0x11);
241 outb(clock & ~(hwif->channel ? 0x08:0x02), high_16 + 0x11);
242 }
243 if (drive->current_speed > XFER_UDMA_2)
244 pdc_old_disable_66MHz_clock(drive->hwif);
245 return __ide_dma_end(drive);
246 }
247
248 static int pdc202xx_old_ide_dma_test_irq(ide_drive_t *drive)
249 {
250 ide_hwif_t *hwif = HWIF(drive);
251 unsigned long high_16 = hwif->dma_master;
252 u8 dma_stat = inb(hwif->dma_status);
253 u8 sc1d = inb(high_16 + 0x001d);
254
255 if (hwif->channel) {
256 /* bit7: Error, bit6: Interrupting, bit5: FIFO Full, bit4: FIFO Empty */
257 if ((sc1d & 0x50) == 0x50)
258 goto somebody_else;
259 else if ((sc1d & 0x40) == 0x40)
260 return (dma_stat & 4) == 4;
261 } else {
262 /* bit3: Error, bit2: Interrupting, bit1: FIFO Full, bit0: FIFO Empty */
263 if ((sc1d & 0x05) == 0x05)
264 goto somebody_else;
265 else if ((sc1d & 0x04) == 0x04)
266 return (dma_stat & 4) == 4;
267 }
268 somebody_else:
269 return (dma_stat & 4) == 4; /* return 1 if INTR asserted */
270 }
271
272 static void pdc202xx_dma_lost_irq(ide_drive_t *drive)
273 {
274 ide_hwif_t *hwif = HWIF(drive);
275
276 if (hwif->resetproc != NULL)
277 hwif->resetproc(drive);
278
279 ide_dma_lost_irq(drive);
280 }
281
282 static void pdc202xx_dma_timeout(ide_drive_t *drive)
283 {
284 ide_hwif_t *hwif = HWIF(drive);
285
286 if (hwif->resetproc != NULL)
287 hwif->resetproc(drive);
288
289 ide_dma_timeout(drive);
290 }
291
292 static void pdc202xx_reset_host (ide_hwif_t *hwif)
293 {
294 unsigned long high_16 = hwif->dma_master;
295 u8 udma_speed_flag = inb(high_16 | 0x001f);
296
297 outb(udma_speed_flag | 0x10, high_16 | 0x001f);
298 mdelay(100);
299 outb(udma_speed_flag & ~0x10, high_16 | 0x001f);
300 mdelay(2000); /* 2 seconds ?! */
301
302 printk(KERN_WARNING "PDC202XX: %s channel reset.\n",
303 hwif->channel ? "Secondary" : "Primary");
304 }
305
306 static void pdc202xx_reset (ide_drive_t *drive)
307 {
308 ide_hwif_t *hwif = HWIF(drive);
309 ide_hwif_t *mate = hwif->mate;
310
311 pdc202xx_reset_host(hwif);
312 pdc202xx_reset_host(mate);
313 pdc202xx_tune_drive(drive, 255);
314 }
315
316 static unsigned int __devinit init_chipset_pdc202xx(struct pci_dev *dev,
317 const char *name)
318 {
319 /* This doesn't appear needed */
320 if (dev->resource[PCI_ROM_RESOURCE].start) {
321 pci_write_config_dword(dev, PCI_ROM_ADDRESS,
322 dev->resource[PCI_ROM_RESOURCE].start | PCI_ROM_ADDRESS_ENABLE);
323 printk(KERN_INFO "%s: ROM enabled at 0x%08lx\n", name,
324 (unsigned long)dev->resource[PCI_ROM_RESOURCE].start);
325 }
326
327 return dev->irq;
328 }
329
330 static void __devinit init_hwif_pdc202xx(ide_hwif_t *hwif)
331 {
332 struct pci_dev *dev = hwif->pci_dev;
333
334 /* PDC20265 has problems with large LBA48 requests */
335 if ((dev->device == PCI_DEVICE_ID_PROMISE_20267) ||
336 (dev->device == PCI_DEVICE_ID_PROMISE_20265))
337 hwif->rqsize = 256;
338
339 hwif->autodma = 0;
340 hwif->tuneproc = &pdc202xx_tune_drive;
341 hwif->quirkproc = &pdc202xx_quirkproc;
342
343 if (hwif->pci_dev->device != PCI_DEVICE_ID_PROMISE_20246)
344 hwif->resetproc = &pdc202xx_reset;
345
346 hwif->speedproc = &pdc202xx_tune_chipset;
347
348 hwif->drives[0].autotune = hwif->drives[1].autotune = 1;
349
350 hwif->ultra_mask = hwif->cds->udma_mask;
351 hwif->mwdma_mask = 0x07;
352 hwif->swdma_mask = 0x07;
353 hwif->atapi_dma = 1;
354
355 hwif->err_stops_fifo = 1;
356
357 hwif->ide_dma_check = &pdc202xx_config_drive_xfer_rate;
358 hwif->dma_lost_irq = &pdc202xx_dma_lost_irq;
359 hwif->dma_timeout = &pdc202xx_dma_timeout;
360
361 if (hwif->pci_dev->device != PCI_DEVICE_ID_PROMISE_20246) {
362 if (hwif->cbl != ATA_CBL_PATA40_SHORT)
363 hwif->cbl = pdc202xx_old_cable_detect(hwif);
364
365 hwif->dma_start = &pdc202xx_old_ide_dma_start;
366 hwif->ide_dma_end = &pdc202xx_old_ide_dma_end;
367 }
368 hwif->ide_dma_test_irq = &pdc202xx_old_ide_dma_test_irq;
369
370 if (!noautodma)
371 hwif->autodma = 1;
372 hwif->drives[0].autodma = hwif->drives[1].autodma = hwif->autodma;
373 }
374
375 static void __devinit init_dma_pdc202xx(ide_hwif_t *hwif, unsigned long dmabase)
376 {
377 u8 udma_speed_flag = 0, primary_mode = 0, secondary_mode = 0;
378
379 if (hwif->channel) {
380 ide_setup_dma(hwif, dmabase, 8);
381 return;
382 }
383
384 udma_speed_flag = inb(dmabase | 0x1f);
385 primary_mode = inb(dmabase | 0x1a);
386 secondary_mode = inb(dmabase | 0x1b);
387 printk(KERN_INFO "%s: (U)DMA Burst Bit %sABLED " \
388 "Primary %s Mode " \
389 "Secondary %s Mode.\n", hwif->cds->name,
390 (udma_speed_flag & 1) ? "EN" : "DIS",
391 (primary_mode & 1) ? "MASTER" : "PCI",
392 (secondary_mode & 1) ? "MASTER" : "PCI" );
393
394 #ifdef CONFIG_PDC202XX_BURST
395 if (!(udma_speed_flag & 1)) {
396 printk(KERN_INFO "%s: FORCING BURST BIT 0x%02x->0x%02x ",
397 hwif->cds->name, udma_speed_flag,
398 (udma_speed_flag|1));
399 outb(udma_speed_flag | 1, dmabase | 0x1f);
400 printk("%sACTIVE\n", (inb(dmabase | 0x1f) & 1) ? "" : "IN");
401 }
402 #endif /* CONFIG_PDC202XX_BURST */
403
404 ide_setup_dma(hwif, dmabase, 8);
405 }
406
407 static int __devinit init_setup_pdc202ata4(struct pci_dev *dev,
408 ide_pci_device_t *d)
409 {
410 if ((dev->class >> 8) != PCI_CLASS_STORAGE_IDE) {
411 u8 irq = 0, irq2 = 0;
412 pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
413 /* 0xbc */
414 pci_read_config_byte(dev, (PCI_INTERRUPT_LINE)|0x80, &irq2);
415 if (irq != irq2) {
416 pci_write_config_byte(dev,
417 (PCI_INTERRUPT_LINE)|0x80, irq); /* 0xbc */
418 printk(KERN_INFO "%s: pci-config space interrupt "
419 "mirror fixed.\n", d->name);
420 }
421 }
422 return ide_setup_pci_device(dev, d);
423 }
424
425 static int __devinit init_setup_pdc20265(struct pci_dev *dev,
426 ide_pci_device_t *d)
427 {
428 if ((dev->bus->self) &&
429 (dev->bus->self->vendor == PCI_VENDOR_ID_INTEL) &&
430 ((dev->bus->self->device == PCI_DEVICE_ID_INTEL_I960) ||
431 (dev->bus->self->device == PCI_DEVICE_ID_INTEL_I960RM))) {
432 printk(KERN_INFO "ide: Skipping Promise PDC20265 "
433 "attached to I2O RAID controller.\n");
434 return -ENODEV;
435 }
436 return ide_setup_pci_device(dev, d);
437 }
438
439 static int __devinit init_setup_pdc202xx(struct pci_dev *dev,
440 ide_pci_device_t *d)
441 {
442 return ide_setup_pci_device(dev, d);
443 }
444
445 static ide_pci_device_t pdc202xx_chipsets[] __devinitdata = {
446 { /* 0 */
447 .name = "PDC20246",
448 .init_setup = init_setup_pdc202ata4,
449 .init_chipset = init_chipset_pdc202xx,
450 .init_hwif = init_hwif_pdc202xx,
451 .init_dma = init_dma_pdc202xx,
452 .channels = 2,
453 .autodma = AUTODMA,
454 .bootable = OFF_BOARD,
455 .extra = 16,
456 .udma_mask = 0x07, /* udma0-2 */
457 },{ /* 1 */
458 .name = "PDC20262",
459 .init_setup = init_setup_pdc202ata4,
460 .init_chipset = init_chipset_pdc202xx,
461 .init_hwif = init_hwif_pdc202xx,
462 .init_dma = init_dma_pdc202xx,
463 .channels = 2,
464 .autodma = AUTODMA,
465 .bootable = OFF_BOARD,
466 .extra = 48,
467 .udma_mask = 0x1f, /* udma0-4 */
468 },{ /* 2 */
469 .name = "PDC20263",
470 .init_setup = init_setup_pdc202ata4,
471 .init_chipset = init_chipset_pdc202xx,
472 .init_hwif = init_hwif_pdc202xx,
473 .init_dma = init_dma_pdc202xx,
474 .channels = 2,
475 .autodma = AUTODMA,
476 .bootable = OFF_BOARD,
477 .extra = 48,
478 .udma_mask = 0x1f, /* udma0-4 */
479 },{ /* 3 */
480 .name = "PDC20265",
481 .init_setup = init_setup_pdc20265,
482 .init_chipset = init_chipset_pdc202xx,
483 .init_hwif = init_hwif_pdc202xx,
484 .init_dma = init_dma_pdc202xx,
485 .channels = 2,
486 .autodma = AUTODMA,
487 .bootable = OFF_BOARD,
488 .extra = 48,
489 .udma_mask = 0x3f, /* udma0-5 */
490 },{ /* 4 */
491 .name = "PDC20267",
492 .init_setup = init_setup_pdc202xx,
493 .init_chipset = init_chipset_pdc202xx,
494 .init_hwif = init_hwif_pdc202xx,
495 .init_dma = init_dma_pdc202xx,
496 .channels = 2,
497 .autodma = AUTODMA,
498 .bootable = OFF_BOARD,
499 .extra = 48,
500 .udma_mask = 0x3f, /* udma0-5 */
501 }
502 };
503
504 /**
505 * pdc202xx_init_one - called when a PDC202xx is found
506 * @dev: the pdc202xx device
507 * @id: the matching pci id
508 *
509 * Called when the PCI registration layer (or the IDE initialization)
510 * finds a device matching our IDE device tables.
511 */
512
513 static int __devinit pdc202xx_init_one(struct pci_dev *dev, const struct pci_device_id *id)
514 {
515 ide_pci_device_t *d = &pdc202xx_chipsets[id->driver_data];
516
517 return d->init_setup(dev, d);
518 }
519
520 static struct pci_device_id pdc202xx_pci_tbl[] = {
521 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20246, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
522 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20262, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1},
523 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20263, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2},
524 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20265, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3},
525 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20267, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4},
526 { 0, },
527 };
528 MODULE_DEVICE_TABLE(pci, pdc202xx_pci_tbl);
529
530 static struct pci_driver driver = {
531 .name = "Promise_Old_IDE",
532 .id_table = pdc202xx_pci_tbl,
533 .probe = pdc202xx_init_one,
534 };
535
536 static int __init pdc202xx_ide_init(void)
537 {
538 return ide_pci_register_driver(&driver);
539 }
540
541 module_init(pdc202xx_ide_init);
542
543 MODULE_AUTHOR("Andre Hedrick, Frank Tiernan");
544 MODULE_DESCRIPTION("PCI driver module for older Promise IDE");
545 MODULE_LICENSE("GPL");