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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 pci_read_config_word(hwif->pci_dev, 0x50, &CIS);
156 return (CIS & mask) ? 1 : 0;
157 }
158
159 /*
160 * Set the control register to use the 66MHz system
161 * clock for UDMA 3/4/5 mode operation when necessary.
162 *
163 * FIXME: this register is shared by both channels, some locking is needed
164 *
165 * It may also be possible to leave the 66MHz clock on
166 * and readjust the timing parameters.
167 */
168 static void pdc_old_enable_66MHz_clock(ide_hwif_t *hwif)
169 {
170 unsigned long clock_reg = hwif->dma_master + 0x11;
171 u8 clock = inb(clock_reg);
172
173 outb(clock | (hwif->channel ? 0x08 : 0x02), clock_reg);
174 }
175
176 static void pdc_old_disable_66MHz_clock(ide_hwif_t *hwif)
177 {
178 unsigned long clock_reg = hwif->dma_master + 0x11;
179 u8 clock = inb(clock_reg);
180
181 outb(clock & ~(hwif->channel ? 0x08 : 0x02), clock_reg);
182 }
183
184 static int pdc202xx_config_drive_xfer_rate (ide_drive_t *drive)
185 {
186 drive->init_speed = 0;
187
188 if (ide_tune_dma(drive))
189 return 0;
190
191 if (ide_use_fast_pio(drive))
192 pdc202xx_tune_drive(drive, 255);
193
194 return -1;
195 }
196
197 static int pdc202xx_quirkproc (ide_drive_t *drive)
198 {
199 const char **list, *model = drive->id->model;
200
201 for (list = pdc_quirk_drives; *list != NULL; list++)
202 if (strstr(model, *list) != NULL)
203 return 2;
204 return 0;
205 }
206
207 static void pdc202xx_old_ide_dma_start(ide_drive_t *drive)
208 {
209 if (drive->current_speed > XFER_UDMA_2)
210 pdc_old_enable_66MHz_clock(drive->hwif);
211 if (drive->media != ide_disk || drive->addressing == 1) {
212 struct request *rq = HWGROUP(drive)->rq;
213 ide_hwif_t *hwif = HWIF(drive);
214 unsigned long high_16 = hwif->dma_master;
215 unsigned long atapi_reg = high_16 + (hwif->channel ? 0x24 : 0x20);
216 u32 word_count = 0;
217 u8 clock = inb(high_16 + 0x11);
218
219 outb(clock | (hwif->channel ? 0x08 : 0x02), high_16 + 0x11);
220 word_count = (rq->nr_sectors << 8);
221 word_count = (rq_data_dir(rq) == READ) ?
222 word_count | 0x05000000 :
223 word_count | 0x06000000;
224 outl(word_count, atapi_reg);
225 }
226 ide_dma_start(drive);
227 }
228
229 static int pdc202xx_old_ide_dma_end(ide_drive_t *drive)
230 {
231 if (drive->media != ide_disk || drive->addressing == 1) {
232 ide_hwif_t *hwif = HWIF(drive);
233 unsigned long high_16 = hwif->dma_master;
234 unsigned long atapi_reg = high_16 + (hwif->channel ? 0x24 : 0x20);
235 u8 clock = 0;
236
237 outl(0, atapi_reg); /* zero out extra */
238 clock = inb(high_16 + 0x11);
239 outb(clock & ~(hwif->channel ? 0x08:0x02), high_16 + 0x11);
240 }
241 if (drive->current_speed > XFER_UDMA_2)
242 pdc_old_disable_66MHz_clock(drive->hwif);
243 return __ide_dma_end(drive);
244 }
245
246 static int pdc202xx_old_ide_dma_test_irq(ide_drive_t *drive)
247 {
248 ide_hwif_t *hwif = HWIF(drive);
249 unsigned long high_16 = hwif->dma_master;
250 u8 dma_stat = inb(hwif->dma_status);
251 u8 sc1d = inb(high_16 + 0x001d);
252
253 if (hwif->channel) {
254 /* bit7: Error, bit6: Interrupting, bit5: FIFO Full, bit4: FIFO Empty */
255 if ((sc1d & 0x50) == 0x50)
256 goto somebody_else;
257 else if ((sc1d & 0x40) == 0x40)
258 return (dma_stat & 4) == 4;
259 } else {
260 /* bit3: Error, bit2: Interrupting, bit1: FIFO Full, bit0: FIFO Empty */
261 if ((sc1d & 0x05) == 0x05)
262 goto somebody_else;
263 else if ((sc1d & 0x04) == 0x04)
264 return (dma_stat & 4) == 4;
265 }
266 somebody_else:
267 return (dma_stat & 4) == 4; /* return 1 if INTR asserted */
268 }
269
270 static void pdc202xx_dma_lost_irq(ide_drive_t *drive)
271 {
272 ide_hwif_t *hwif = HWIF(drive);
273
274 if (hwif->resetproc != NULL)
275 hwif->resetproc(drive);
276
277 ide_dma_lost_irq(drive);
278 }
279
280 static void pdc202xx_dma_timeout(ide_drive_t *drive)
281 {
282 ide_hwif_t *hwif = HWIF(drive);
283
284 if (hwif->resetproc != NULL)
285 hwif->resetproc(drive);
286
287 ide_dma_timeout(drive);
288 }
289
290 static void pdc202xx_reset_host (ide_hwif_t *hwif)
291 {
292 unsigned long high_16 = hwif->dma_master;
293 u8 udma_speed_flag = inb(high_16 | 0x001f);
294
295 outb(udma_speed_flag | 0x10, high_16 | 0x001f);
296 mdelay(100);
297 outb(udma_speed_flag & ~0x10, high_16 | 0x001f);
298 mdelay(2000); /* 2 seconds ?! */
299
300 printk(KERN_WARNING "PDC202XX: %s channel reset.\n",
301 hwif->channel ? "Secondary" : "Primary");
302 }
303
304 static void pdc202xx_reset (ide_drive_t *drive)
305 {
306 ide_hwif_t *hwif = HWIF(drive);
307 ide_hwif_t *mate = hwif->mate;
308
309 pdc202xx_reset_host(hwif);
310 pdc202xx_reset_host(mate);
311 pdc202xx_tune_drive(drive, 255);
312 }
313
314 static unsigned int __devinit init_chipset_pdc202xx(struct pci_dev *dev,
315 const char *name)
316 {
317 /* This doesn't appear needed */
318 if (dev->resource[PCI_ROM_RESOURCE].start) {
319 pci_write_config_dword(dev, PCI_ROM_ADDRESS,
320 dev->resource[PCI_ROM_RESOURCE].start | PCI_ROM_ADDRESS_ENABLE);
321 printk(KERN_INFO "%s: ROM enabled at 0x%08lx\n", name,
322 (unsigned long)dev->resource[PCI_ROM_RESOURCE].start);
323 }
324
325 return dev->irq;
326 }
327
328 static void __devinit init_hwif_pdc202xx(ide_hwif_t *hwif)
329 {
330 struct pci_dev *dev = hwif->pci_dev;
331
332 /* PDC20265 has problems with large LBA48 requests */
333 if ((dev->device == PCI_DEVICE_ID_PROMISE_20267) ||
334 (dev->device == PCI_DEVICE_ID_PROMISE_20265))
335 hwif->rqsize = 256;
336
337 hwif->autodma = 0;
338 hwif->tuneproc = &pdc202xx_tune_drive;
339 hwif->quirkproc = &pdc202xx_quirkproc;
340
341 if (hwif->pci_dev->device != PCI_DEVICE_ID_PROMISE_20246)
342 hwif->resetproc = &pdc202xx_reset;
343
344 hwif->speedproc = &pdc202xx_tune_chipset;
345
346 hwif->drives[0].autotune = hwif->drives[1].autotune = 1;
347
348 hwif->ultra_mask = hwif->cds->udma_mask;
349 hwif->mwdma_mask = 0x07;
350 hwif->swdma_mask = 0x07;
351 hwif->atapi_dma = 1;
352
353 hwif->err_stops_fifo = 1;
354
355 hwif->ide_dma_check = &pdc202xx_config_drive_xfer_rate;
356 hwif->dma_lost_irq = &pdc202xx_dma_lost_irq;
357 hwif->dma_timeout = &pdc202xx_dma_timeout;
358
359 if (hwif->pci_dev->device != PCI_DEVICE_ID_PROMISE_20246) {
360 if (!(hwif->udma_four))
361 hwif->udma_four = (pdc202xx_old_cable_detect(hwif)) ? 0 : 1;
362 hwif->dma_start = &pdc202xx_old_ide_dma_start;
363 hwif->ide_dma_end = &pdc202xx_old_ide_dma_end;
364 }
365 hwif->ide_dma_test_irq = &pdc202xx_old_ide_dma_test_irq;
366
367 if (!noautodma)
368 hwif->autodma = 1;
369 hwif->drives[0].autodma = hwif->drives[1].autodma = hwif->autodma;
370 }
371
372 static void __devinit init_dma_pdc202xx(ide_hwif_t *hwif, unsigned long dmabase)
373 {
374 u8 udma_speed_flag = 0, primary_mode = 0, secondary_mode = 0;
375
376 if (hwif->channel) {
377 ide_setup_dma(hwif, dmabase, 8);
378 return;
379 }
380
381 udma_speed_flag = inb(dmabase | 0x1f);
382 primary_mode = inb(dmabase | 0x1a);
383 secondary_mode = inb(dmabase | 0x1b);
384 printk(KERN_INFO "%s: (U)DMA Burst Bit %sABLED " \
385 "Primary %s Mode " \
386 "Secondary %s Mode.\n", hwif->cds->name,
387 (udma_speed_flag & 1) ? "EN" : "DIS",
388 (primary_mode & 1) ? "MASTER" : "PCI",
389 (secondary_mode & 1) ? "MASTER" : "PCI" );
390
391 #ifdef CONFIG_PDC202XX_BURST
392 if (!(udma_speed_flag & 1)) {
393 printk(KERN_INFO "%s: FORCING BURST BIT 0x%02x->0x%02x ",
394 hwif->cds->name, udma_speed_flag,
395 (udma_speed_flag|1));
396 outb(udma_speed_flag | 1, dmabase | 0x1f);
397 printk("%sACTIVE\n", (inb(dmabase | 0x1f) & 1) ? "" : "IN");
398 }
399 #endif /* CONFIG_PDC202XX_BURST */
400
401 ide_setup_dma(hwif, dmabase, 8);
402 }
403
404 static int __devinit init_setup_pdc202ata4(struct pci_dev *dev,
405 ide_pci_device_t *d)
406 {
407 if ((dev->class >> 8) != PCI_CLASS_STORAGE_IDE) {
408 u8 irq = 0, irq2 = 0;
409 pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
410 /* 0xbc */
411 pci_read_config_byte(dev, (PCI_INTERRUPT_LINE)|0x80, &irq2);
412 if (irq != irq2) {
413 pci_write_config_byte(dev,
414 (PCI_INTERRUPT_LINE)|0x80, irq); /* 0xbc */
415 printk(KERN_INFO "%s: pci-config space interrupt "
416 "mirror fixed.\n", d->name);
417 }
418 }
419 return ide_setup_pci_device(dev, d);
420 }
421
422 static int __devinit init_setup_pdc20265(struct pci_dev *dev,
423 ide_pci_device_t *d)
424 {
425 if ((dev->bus->self) &&
426 (dev->bus->self->vendor == PCI_VENDOR_ID_INTEL) &&
427 ((dev->bus->self->device == PCI_DEVICE_ID_INTEL_I960) ||
428 (dev->bus->self->device == PCI_DEVICE_ID_INTEL_I960RM))) {
429 printk(KERN_INFO "ide: Skipping Promise PDC20265 "
430 "attached to I2O RAID controller.\n");
431 return -ENODEV;
432 }
433 return ide_setup_pci_device(dev, d);
434 }
435
436 static int __devinit init_setup_pdc202xx(struct pci_dev *dev,
437 ide_pci_device_t *d)
438 {
439 return ide_setup_pci_device(dev, d);
440 }
441
442 static ide_pci_device_t pdc202xx_chipsets[] __devinitdata = {
443 { /* 0 */
444 .name = "PDC20246",
445 .init_setup = init_setup_pdc202ata4,
446 .init_chipset = init_chipset_pdc202xx,
447 .init_hwif = init_hwif_pdc202xx,
448 .init_dma = init_dma_pdc202xx,
449 .channels = 2,
450 .autodma = AUTODMA,
451 .bootable = OFF_BOARD,
452 .extra = 16,
453 .udma_mask = 0x07, /* udma0-2 */
454 },{ /* 1 */
455 .name = "PDC20262",
456 .init_setup = init_setup_pdc202ata4,
457 .init_chipset = init_chipset_pdc202xx,
458 .init_hwif = init_hwif_pdc202xx,
459 .init_dma = init_dma_pdc202xx,
460 .channels = 2,
461 .autodma = AUTODMA,
462 .bootable = OFF_BOARD,
463 .extra = 48,
464 .udma_mask = 0x1f, /* udma0-4 */
465 },{ /* 2 */
466 .name = "PDC20263",
467 .init_setup = init_setup_pdc202ata4,
468 .init_chipset = init_chipset_pdc202xx,
469 .init_hwif = init_hwif_pdc202xx,
470 .init_dma = init_dma_pdc202xx,
471 .channels = 2,
472 .autodma = AUTODMA,
473 .bootable = OFF_BOARD,
474 .extra = 48,
475 .udma_mask = 0x1f, /* udma0-4 */
476 },{ /* 3 */
477 .name = "PDC20265",
478 .init_setup = init_setup_pdc20265,
479 .init_chipset = init_chipset_pdc202xx,
480 .init_hwif = init_hwif_pdc202xx,
481 .init_dma = init_dma_pdc202xx,
482 .channels = 2,
483 .autodma = AUTODMA,
484 .bootable = OFF_BOARD,
485 .extra = 48,
486 .udma_mask = 0x3f, /* udma0-5 */
487 },{ /* 4 */
488 .name = "PDC20267",
489 .init_setup = init_setup_pdc202xx,
490 .init_chipset = init_chipset_pdc202xx,
491 .init_hwif = init_hwif_pdc202xx,
492 .init_dma = init_dma_pdc202xx,
493 .channels = 2,
494 .autodma = AUTODMA,
495 .bootable = OFF_BOARD,
496 .extra = 48,
497 .udma_mask = 0x3f, /* udma0-5 */
498 }
499 };
500
501 /**
502 * pdc202xx_init_one - called when a PDC202xx is found
503 * @dev: the pdc202xx device
504 * @id: the matching pci id
505 *
506 * Called when the PCI registration layer (or the IDE initialization)
507 * finds a device matching our IDE device tables.
508 */
509
510 static int __devinit pdc202xx_init_one(struct pci_dev *dev, const struct pci_device_id *id)
511 {
512 ide_pci_device_t *d = &pdc202xx_chipsets[id->driver_data];
513
514 return d->init_setup(dev, d);
515 }
516
517 static struct pci_device_id pdc202xx_pci_tbl[] = {
518 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20246, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
519 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20262, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1},
520 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20263, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2},
521 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20265, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3},
522 { PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20267, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4},
523 { 0, },
524 };
525 MODULE_DEVICE_TABLE(pci, pdc202xx_pci_tbl);
526
527 static struct pci_driver driver = {
528 .name = "Promise_Old_IDE",
529 .id_table = pdc202xx_pci_tbl,
530 .probe = pdc202xx_init_one,
531 };
532
533 static int __init pdc202xx_ide_init(void)
534 {
535 return ide_pci_register_driver(&driver);
536 }
537
538 module_init(pdc202xx_ide_init);
539
540 MODULE_AUTHOR("Andre Hedrick, Frank Tiernan");
541 MODULE_DESCRIPTION("PCI driver module for older Promise IDE");
542 MODULE_LICENSE("GPL");