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Revert "[PATCH] paravirt: Add startup infrastructure for paravirtualization"
[pv_ops_mirror.git] / drivers / ide / pci / alim15x3.c
blob428efdae0c7b2ef4554b3d19439b3bf459012999
1 /*
2 * linux/drivers/ide/pci/alim15x3.c Version 0.21 2007/02/03
3 *
4 * Copyright (C) 1998-2000 Michel Aubry, Maintainer
5 * Copyright (C) 1998-2000 Andrzej Krzysztofowicz, Maintainer
6 * Copyright (C) 1999-2000 CJ, cjtsai@ali.com.tw, Maintainer
7 *
8 * Copyright (C) 1998-2000 Andre Hedrick (andre@linux-ide.org)
9 * May be copied or modified under the terms of the GNU General Public License
10 * Copyright (C) 2002 Alan Cox <alan@redhat.com>
11 * ALi (now ULi M5228) support by Clear Zhang <Clear.Zhang@ali.com.tw>
12 * Copyright (C) 2007 MontaVista Software, Inc. <source@mvista.com>
13 *
14 * (U)DMA capable version of ali 1533/1543(C), 1535(D)
15 *
16 **********************************************************************
17 * 9/7/99 --Parts from the above author are included and need to be
18 * converted into standard interface, once I finish the thought.
19 *
20 * Recent changes
21 * Don't use LBA48 mode on ALi <= 0xC4
22 * Don't poke 0x79 with a non ALi northbridge
23 * Don't flip undefined bits on newer chipsets (fix Fujitsu laptop hang)
24 * Allow UDMA6 on revisions > 0xC4
25 *
26 * Documentation
27 * Chipset documentation available under NDA only
28 *
29 */
30
31 #include <linux/module.h>
32 #include <linux/types.h>
33 #include <linux/kernel.h>
34 #include <linux/pci.h>
35 #include <linux/delay.h>
36 #include <linux/hdreg.h>
37 #include <linux/ide.h>
38 #include <linux/init.h>
39
40 #include <asm/io.h>
41
42 #define DISPLAY_ALI_TIMINGS
43
44 /*
45 * ALi devices are not plug in. Otherwise these static values would
46 * need to go. They ought to go away anyway
47 */
48
49 static u8 m5229_revision;
50 static u8 chip_is_1543c_e;
51 static struct pci_dev *isa_dev;
52
53 #if defined(DISPLAY_ALI_TIMINGS) && defined(CONFIG_IDE_PROC_FS)
54 #include <linux/stat.h>
55 #include <linux/proc_fs.h>
56
57 static u8 ali_proc = 0;
58
59 static struct pci_dev *bmide_dev;
60
61 static char *fifo[4] = {
62 "FIFO Off",
63 "FIFO On ",
64 "DMA mode",
65 "PIO mode" };
66
67 static char *udmaT[8] = {
68 "1.5T",
69 " 2T",
70 "2.5T",
71 " 3T",
72 "3.5T",
73 " 4T",
74 " 6T",
75 " 8T"
76 };
77
78 static char *channel_status[8] = {
79 "OK ",
80 "busy ",
81 "DRQ ",
82 "DRQ busy ",
83 "error ",
84 "error busy ",
85 "error DRQ ",
86 "error DRQ busy"
87 };
88
89 /**
90 * ali_get_info - generate proc file for ALi IDE
91 * @buffer: buffer to fill
92 * @addr: address of user start in buffer
93 * @offset: offset into 'file'
94 * @count: buffer count
95 *
96 * Walks the Ali devices and outputs summary data on the tuning and
97 * anything else that will help with debugging
98 */
99
100 static int ali_get_info (char *buffer, char **addr, off_t offset, int count)
101 {
102 unsigned long bibma;
103 u8 reg53h, reg5xh, reg5yh, reg5xh1, reg5yh1, c0, c1, rev, tmp;
104 char *q, *p = buffer;
105
106 /* fetch rev. */
107 pci_read_config_byte(bmide_dev, 0x08, &rev);
108 if (rev >= 0xc1) /* M1543C or newer */
109 udmaT[7] = " ???";
110 else
111 fifo[3] = " ??? ";
112
113 /* first fetch bibma: */
114
115 bibma = pci_resource_start(bmide_dev, 4);
116
117 /*
118 * at that point bibma+0x2 et bibma+0xa are byte
119 * registers to investigate:
120 */
121 c0 = inb(bibma + 0x02);
122 c1 = inb(bibma + 0x0a);
123
124 p += sprintf(p,
125 "\n Ali M15x3 Chipset.\n");
126 p += sprintf(p,
127 " ------------------\n");
128 pci_read_config_byte(bmide_dev, 0x78, &reg53h);
129 p += sprintf(p, "PCI Clock: %d.\n", reg53h);
130
131 pci_read_config_byte(bmide_dev, 0x53, &reg53h);
132 p += sprintf(p,
133 "CD_ROM FIFO:%s, CD_ROM DMA:%s\n",
134 (reg53h & 0x02) ? "Yes" : "No ",
135 (reg53h & 0x01) ? "Yes" : "No " );
136 pci_read_config_byte(bmide_dev, 0x74, &reg53h);
137 p += sprintf(p,
138 "FIFO Status: contains %d Words, runs%s%s\n\n",
139 (reg53h & 0x3f),
140 (reg53h & 0x40) ? " OVERWR" : "",
141 (reg53h & 0x80) ? " OVERRD." : "." );
142
143 p += sprintf(p,
144 "-------------------primary channel"
145 "-------------------secondary channel"
146 "---------\n\n");
147
148 pci_read_config_byte(bmide_dev, 0x09, &reg53h);
149 p += sprintf(p,
150 "channel status: %s"
151 " %s\n",
152 (reg53h & 0x20) ? "On " : "Off",
153 (reg53h & 0x10) ? "On " : "Off" );
154
155 p += sprintf(p,
156 "both channels togth: %s"
157 " %s\n",
158 (c0&0x80) ? "No " : "Yes",
159 (c1&0x80) ? "No " : "Yes" );
160
161 pci_read_config_byte(bmide_dev, 0x76, &reg53h);
162 p += sprintf(p,
163 "Channel state: %s %s\n",
164 channel_status[reg53h & 0x07],
165 channel_status[(reg53h & 0x70) >> 4] );
166
167 pci_read_config_byte(bmide_dev, 0x58, &reg5xh);
168 pci_read_config_byte(bmide_dev, 0x5c, &reg5yh);
169 p += sprintf(p,
170 "Add. Setup Timing: %dT"
171 " %dT\n",
172 (reg5xh & 0x07) ? (reg5xh & 0x07) : 8,
173 (reg5yh & 0x07) ? (reg5yh & 0x07) : 8 );
174
175 pci_read_config_byte(bmide_dev, 0x59, &reg5xh);
176 pci_read_config_byte(bmide_dev, 0x5d, &reg5yh);
177 p += sprintf(p,
178 "Command Act. Count: %dT"
179 " %dT\n"
180 "Command Rec. Count: %dT"
181 " %dT\n\n",
182 (reg5xh & 0x70) ? ((reg5xh & 0x70) >> 4) : 8,
183 (reg5yh & 0x70) ? ((reg5yh & 0x70) >> 4) : 8,
184 (reg5xh & 0x0f) ? (reg5xh & 0x0f) : 16,
185 (reg5yh & 0x0f) ? (reg5yh & 0x0f) : 16 );
186
187 p += sprintf(p,
188 "----------------drive0-----------drive1"
189 "------------drive0-----------drive1------\n\n");
190 p += sprintf(p,
191 "DMA enabled: %s %s"
192 " %s %s\n",
193 (c0&0x20) ? "Yes" : "No ",
194 (c0&0x40) ? "Yes" : "No ",
195 (c1&0x20) ? "Yes" : "No ",
196 (c1&0x40) ? "Yes" : "No " );
197
198 pci_read_config_byte(bmide_dev, 0x54, &reg5xh);
199 pci_read_config_byte(bmide_dev, 0x55, &reg5yh);
200 q = "FIFO threshold: %2d Words %2d Words"
201 " %2d Words %2d Words\n";
202 if (rev < 0xc1) {
203 if ((rev == 0x20) &&
204 (pci_read_config_byte(bmide_dev, 0x4f, &tmp), (tmp &= 0x20))) {
205 p += sprintf(p, q, 8, 8, 8, 8);
206 } else {
207 p += sprintf(p, q,
208 (reg5xh & 0x03) + 12,
209 ((reg5xh & 0x30)>>4) + 12,
210 (reg5yh & 0x03) + 12,
211 ((reg5yh & 0x30)>>4) + 12 );
212 }
213 } else {
214 int t1 = (tmp = (reg5xh & 0x03)) ? (tmp << 3) : 4;
215 int t2 = (tmp = ((reg5xh & 0x30)>>4)) ? (tmp << 3) : 4;
216 int t3 = (tmp = (reg5yh & 0x03)) ? (tmp << 3) : 4;
217 int t4 = (tmp = ((reg5yh & 0x30)>>4)) ? (tmp << 3) : 4;
218 p += sprintf(p, q, t1, t2, t3, t4);
219 }
220
221 #if 0
222 p += sprintf(p,
223 "FIFO threshold: %2d Words %2d Words"
224 " %2d Words %2d Words\n",
225 (reg5xh & 0x03) + 12,
226 ((reg5xh & 0x30)>>4) + 12,
227 (reg5yh & 0x03) + 12,
228 ((reg5yh & 0x30)>>4) + 12 );
229 #endif
230
231 p += sprintf(p,
232 "FIFO mode: %s %s %s %s\n",
233 fifo[((reg5xh & 0x0c) >> 2)],
234 fifo[((reg5xh & 0xc0) >> 6)],
235 fifo[((reg5yh & 0x0c) >> 2)],
236 fifo[((reg5yh & 0xc0) >> 6)] );
237
238 pci_read_config_byte(bmide_dev, 0x5a, &reg5xh);
239 pci_read_config_byte(bmide_dev, 0x5b, &reg5xh1);
240 pci_read_config_byte(bmide_dev, 0x5e, &reg5yh);
241 pci_read_config_byte(bmide_dev, 0x5f, &reg5yh1);
242
243 p += sprintf(p,/*
244 "------------------drive0-----------drive1"
245 "------------drive0-----------drive1------\n")*/
246 "Dt RW act. Cnt %2dT %2dT"
247 " %2dT %2dT\n"
248 "Dt RW rec. Cnt %2dT %2dT"
249 " %2dT %2dT\n\n",
250 (reg5xh & 0x70) ? ((reg5xh & 0x70) >> 4) : 8,
251 (reg5xh1 & 0x70) ? ((reg5xh1 & 0x70) >> 4) : 8,
252 (reg5yh & 0x70) ? ((reg5yh & 0x70) >> 4) : 8,
253 (reg5yh1 & 0x70) ? ((reg5yh1 & 0x70) >> 4) : 8,
254 (reg5xh & 0x0f) ? (reg5xh & 0x0f) : 16,
255 (reg5xh1 & 0x0f) ? (reg5xh1 & 0x0f) : 16,
256 (reg5yh & 0x0f) ? (reg5yh & 0x0f) : 16,
257 (reg5yh1 & 0x0f) ? (reg5yh1 & 0x0f) : 16 );
258
259 p += sprintf(p,
260 "-----------------------------------UDMA Timings"
261 "--------------------------------\n\n");
262
263 pci_read_config_byte(bmide_dev, 0x56, &reg5xh);
264 pci_read_config_byte(bmide_dev, 0x57, &reg5yh);
265 p += sprintf(p,
266 "UDMA: %s %s"
267 " %s %s\n"
268 "UDMA timings: %s %s"
269 " %s %s\n\n",
270 (reg5xh & 0x08) ? "OK" : "No",
271 (reg5xh & 0x80) ? "OK" : "No",
272 (reg5yh & 0x08) ? "OK" : "No",
273 (reg5yh & 0x80) ? "OK" : "No",
274 udmaT[(reg5xh & 0x07)],
275 udmaT[(reg5xh & 0x70) >> 4],
276 udmaT[reg5yh & 0x07],
277 udmaT[(reg5yh & 0x70) >> 4] );
278
279 return p-buffer; /* => must be less than 4k! */
280 }
281 #endif /* defined(DISPLAY_ALI_TIMINGS) && defined(CONFIG_IDE_PROC_FS) */
282
283 /**
284 * ali15x3_tune_pio - set up chipset for PIO mode
285 * @drive: drive to tune
286 * @pio: desired mode
287 *
288 * Select the best PIO mode for the drive in question.
289 * Then program the controller for this mode.
290 *
291 * Returns the PIO mode programmed.
292 */
293
294 static u8 ali15x3_tune_pio (ide_drive_t *drive, u8 pio)
295 {
296 ide_pio_data_t d;
297 ide_hwif_t *hwif = HWIF(drive);
298 struct pci_dev *dev = hwif->pci_dev;
299 int s_time, a_time, c_time;
300 u8 s_clc, a_clc, r_clc;
301 unsigned long flags;
302 int bus_speed = system_bus_clock();
303 int port = hwif->channel ? 0x5c : 0x58;
304 int portFIFO = hwif->channel ? 0x55 : 0x54;
305 u8 cd_dma_fifo = 0;
306 int unit = drive->select.b.unit & 1;
307
308 pio = ide_get_best_pio_mode(drive, pio, 5, &d);
309 s_time = ide_pio_timings[pio].setup_time;
310 a_time = ide_pio_timings[pio].active_time;
311 if ((s_clc = (s_time * bus_speed + 999) / 1000) >= 8)
312 s_clc = 0;
313 if ((a_clc = (a_time * bus_speed + 999) / 1000) >= 8)
314 a_clc = 0;
315 c_time = ide_pio_timings[pio].cycle_time;
316
317 #if 0
318 if ((r_clc = ((c_time - s_time - a_time) * bus_speed + 999) / 1000) >= 16)
319 r_clc = 0;
320 #endif
321
322 if (!(r_clc = (c_time * bus_speed + 999) / 1000 - a_clc - s_clc)) {
323 r_clc = 1;
324 } else {
325 if (r_clc >= 16)
326 r_clc = 0;
327 }
328 local_irq_save(flags);
329
330 /*
331 * PIO mode => ATA FIFO on, ATAPI FIFO off
332 */
333 pci_read_config_byte(dev, portFIFO, &cd_dma_fifo);
334 if (drive->media==ide_disk) {
335 if (unit) {
336 pci_write_config_byte(dev, portFIFO, (cd_dma_fifo & 0x0F) | 0x50);
337 } else {
338 pci_write_config_byte(dev, portFIFO, (cd_dma_fifo & 0xF0) | 0x05);
339 }
340 } else {
341 if (unit) {
342 pci_write_config_byte(dev, portFIFO, cd_dma_fifo & 0x0F);
343 } else {
344 pci_write_config_byte(dev, portFIFO, cd_dma_fifo & 0xF0);
345 }
346 }
347
348 pci_write_config_byte(dev, port, s_clc);
349 pci_write_config_byte(dev, port+drive->select.b.unit+2, (a_clc << 4) | r_clc);
350 local_irq_restore(flags);
351
352 /*
353 * setup active rec
354 * { 70, 165, 365 }, PIO Mode 0
355 * { 50, 125, 208 }, PIO Mode 1
356 * { 30, 100, 110 }, PIO Mode 2
357 * { 30, 80, 70 }, PIO Mode 3 with IORDY
358 * { 25, 70, 25 }, PIO Mode 4 with IORDY ns
359 * { 20, 50, 30 } PIO Mode 5 with IORDY (nonstandard)
360 */
361
362 return pio;
363 }
364
365 /**
366 * ali15x3_tune_drive - set up drive for PIO mode
367 * @drive: drive to tune
368 * @pio: desired mode
369 *
370 * Program the controller with the best PIO timing for the given drive.
371 * Then set up the drive itself.
372 */
373
374 static void ali15x3_tune_drive (ide_drive_t *drive, u8 pio)
375 {
376 pio = ali15x3_tune_pio(drive, pio);
377 (void) ide_config_drive_speed(drive, XFER_PIO_0 + pio);
378 }
379
380 /**
381 * ali_udma_filter - compute UDMA mask
382 * @drive: IDE device
383 *
384 * Return available UDMA modes.
385 *
386 * The actual rules for the ALi are:
387 * No UDMA on revisions <= 0x20
388 * Disk only for revisions < 0xC2
389 * Not WDC drives for revisions < 0xC2
390 *
391 * FIXME: WDC ifdef needs to die
392 */
393
394 static u8 ali_udma_filter(ide_drive_t *drive)
395 {
396 if (m5229_revision > 0x20 && m5229_revision < 0xC2) {
397 if (drive->media != ide_disk)
398 return 0;
399 #ifndef CONFIG_WDC_ALI15X3
400 if (chip_is_1543c_e && strstr(drive->id->model, "WDC "))
401 return 0;
402 #endif
403 }
404
405 return drive->hwif->ultra_mask;
406 }
407
408 /**
409 * ali15x3_tune_chipset - set up chipset/drive for new speed
410 * @drive: drive to configure for
411 * @xferspeed: desired speed
412 *
413 * Configure the hardware for the desired IDE transfer mode.
414 * We also do the needed drive configuration through helpers
415 */
416
417 static int ali15x3_tune_chipset (ide_drive_t *drive, u8 xferspeed)
418 {
419 ide_hwif_t *hwif = HWIF(drive);
420 struct pci_dev *dev = hwif->pci_dev;
421 u8 speed = ide_rate_filter(drive, xferspeed);
422 u8 speed1 = speed;
423 u8 unit = (drive->select.b.unit & 0x01);
424 u8 tmpbyte = 0x00;
425 int m5229_udma = (hwif->channel) ? 0x57 : 0x56;
426
427 if (speed == XFER_UDMA_6)
428 speed1 = 0x47;
429
430 if (speed < XFER_UDMA_0) {
431 u8 ultra_enable = (unit) ? 0x7f : 0xf7;
432 /*
433 * clear "ultra enable" bit
434 */
435 pci_read_config_byte(dev, m5229_udma, &tmpbyte);
436 tmpbyte &= ultra_enable;
437 pci_write_config_byte(dev, m5229_udma, tmpbyte);
438
439 if (speed < XFER_SW_DMA_0)
440 (void) ali15x3_tune_pio(drive, speed - XFER_PIO_0);
441 } else {
442 pci_read_config_byte(dev, m5229_udma, &tmpbyte);
443 tmpbyte &= (0x0f << ((1-unit) << 2));
444 /*
445 * enable ultra dma and set timing
446 */
447 tmpbyte |= ((0x08 | ((4-speed1)&0x07)) << (unit << 2));
448 pci_write_config_byte(dev, m5229_udma, tmpbyte);
449 if (speed >= XFER_UDMA_3) {
450 pci_read_config_byte(dev, 0x4b, &tmpbyte);
451 tmpbyte |= 1;
452 pci_write_config_byte(dev, 0x4b, tmpbyte);
453 }
454 }
455 return (ide_config_drive_speed(drive, speed));
456 }
457
458
459 /**
460 * config_chipset_for_dma - set up DMA mode
461 * @drive: drive to configure for
462 *
463 * Place a drive into DMA mode and tune the chipset for
464 * the selected speed.
465 *
466 * Returns true if DMA mode can be used
467 */
468
469 static int config_chipset_for_dma (ide_drive_t *drive)
470 {
471 u8 speed = ide_max_dma_mode(drive);
472
473 if (!(speed))
474 return 0;
475
476 (void) ali15x3_tune_chipset(drive, speed);
477 return ide_dma_enable(drive);
478 }
479
480 /**
481 * ali15x3_config_drive_for_dma - configure for DMA
482 * @drive: drive to configure
483 *
484 * Configure a drive for DMA operation. If DMA is not possible we
485 * drop the drive into PIO mode instead.
486 */
487
488 static int ali15x3_config_drive_for_dma(ide_drive_t *drive)
489 {
490 ide_hwif_t *hwif = HWIF(drive);
491 struct hd_driveid *id = drive->id;
492
493 if ((m5229_revision<=0x20) && (drive->media!=ide_disk))
494 goto ata_pio;
495
496 drive->init_speed = 0;
497
498 if ((id != NULL) && ((id->capability & 1) != 0) && drive->autodma) {
499 /* Consult the list of known "bad" drives */
500 if (__ide_dma_bad_drive(drive))
501 goto ata_pio;
502 if ((id->field_valid & 4) && (m5229_revision >= 0xC2)) {
503 if (id->dma_ultra & hwif->ultra_mask) {
504 /* Force if Capable UltraDMA */
505 int dma = config_chipset_for_dma(drive);
506 if ((id->field_valid & 2) && !dma)
507 goto try_dma_modes;
508 }
509 } else if (id->field_valid & 2) {
510 try_dma_modes:
511 if ((id->dma_mword & hwif->mwdma_mask) ||
512 (id->dma_1word & hwif->swdma_mask)) {
513 /* Force if Capable regular DMA modes */
514 if (!config_chipset_for_dma(drive))
515 goto ata_pio;
516 }
517 } else if (__ide_dma_good_drive(drive) &&
518 (id->eide_dma_time < 150)) {
519 /* Consult the list of known "good" drives */
520 if (!config_chipset_for_dma(drive))
521 goto ata_pio;
522 } else {
523 goto ata_pio;
524 }
525 } else {
526 ata_pio:
527 hwif->tuneproc(drive, 255);
528 return -1;
529 }
530
531 return 0;
532 }
533
534 /**
535 * ali15x3_dma_setup - begin a DMA phase
536 * @drive: target device
537 *
538 * Returns 1 if the DMA cannot be performed, zero on success.
539 */
540
541 static int ali15x3_dma_setup(ide_drive_t *drive)
542 {
543 if (m5229_revision < 0xC2 && drive->media != ide_disk) {
544 if (rq_data_dir(drive->hwif->hwgroup->rq))
545 return 1; /* try PIO instead of DMA */
546 }
547 return ide_dma_setup(drive);
548 }
549
550 /**
551 * init_chipset_ali15x3 - Initialise an ALi IDE controller
552 * @dev: PCI device
553 * @name: Name of the controller
554 *
555 * This function initializes the ALI IDE controller and where
556 * appropriate also sets up the 1533 southbridge.
557 */
558
559 static unsigned int __devinit init_chipset_ali15x3 (struct pci_dev *dev, const char *name)
560 {
561 unsigned long flags;
562 u8 tmpbyte;
563 struct pci_dev *north = pci_get_slot(dev->bus, PCI_DEVFN(0,0));
564
565 pci_read_config_byte(dev, PCI_REVISION_ID, &m5229_revision);
566
567 isa_dev = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, NULL);
568
569 #if defined(DISPLAY_ALI_TIMINGS) && defined(CONFIG_IDE_PROC_FS)
570 if (!ali_proc) {
571 ali_proc = 1;
572 bmide_dev = dev;
573 ide_pci_create_host_proc("ali", ali_get_info);
574 }
575 #endif /* defined(DISPLAY_ALI_TIMINGS) && defined(CONFIG_IDE_PROC_FS) */
576
577 local_irq_save(flags);
578
579 if (m5229_revision < 0xC2) {
580 /*
581 * revision 0x20 (1543-E, 1543-F)
582 * revision 0xC0, 0xC1 (1543C-C, 1543C-D, 1543C-E)
583 * clear CD-ROM DMA write bit, m5229, 0x4b, bit 7
584 */
585 pci_read_config_byte(dev, 0x4b, &tmpbyte);
586 /*
587 * clear bit 7
588 */
589 pci_write_config_byte(dev, 0x4b, tmpbyte & 0x7F);
590 goto out;
591 }
592
593 /*
594 * 1543C-B?, 1535, 1535D, 1553
595 * Note 1: not all "motherboard" support this detection
596 * Note 2: if no udma 66 device, the detection may "error".
597 * but in this case, we will not set the device to
598 * ultra 66, the detection result is not important
599 */
600
601 /*
602 * enable "Cable Detection", m5229, 0x4b, bit3
603 */
604 pci_read_config_byte(dev, 0x4b, &tmpbyte);
605 pci_write_config_byte(dev, 0x4b, tmpbyte | 0x08);
606
607 /*
608 * We should only tune the 1533 enable if we are using an ALi
609 * North bridge. We might have no north found on some zany
610 * box without a device at 0:0.0. The ALi bridge will be at
611 * 0:0.0 so if we didn't find one we know what is cooking.
612 */
613 if (north && north->vendor != PCI_VENDOR_ID_AL)
614 goto out;
615
616 if (m5229_revision < 0xC5 && isa_dev)
617 {
618 /*
619 * set south-bridge's enable bit, m1533, 0x79
620 */
621
622 pci_read_config_byte(isa_dev, 0x79, &tmpbyte);
623 if (m5229_revision == 0xC2) {
624 /*
625 * 1543C-B0 (m1533, 0x79, bit 2)
626 */
627 pci_write_config_byte(isa_dev, 0x79, tmpbyte | 0x04);
628 } else if (m5229_revision >= 0xC3) {
629 /*
630 * 1553/1535 (m1533, 0x79, bit 1)
631 */
632 pci_write_config_byte(isa_dev, 0x79, tmpbyte | 0x02);
633 }
634 }
635 out:
636 pci_dev_put(north);
637 pci_dev_put(isa_dev);
638 local_irq_restore(flags);
639 return 0;
640 }
641
642 /**
643 * ata66_ali15x3 - check for UDMA 66 support
644 * @hwif: IDE interface
645 *
646 * This checks if the controller and the cable are capable
647 * of UDMA66 transfers. It doesn't check the drives.
648 * But see note 2 below!
649 *
650 * FIXME: frobs bits that are not defined on newer ALi devicea
651 */
652
653 static unsigned int __devinit ata66_ali15x3 (ide_hwif_t *hwif)
654 {
655 struct pci_dev *dev = hwif->pci_dev;
656 unsigned int ata66 = 0;
657 u8 cable_80_pin[2] = { 0, 0 };
658
659 unsigned long flags;
660 u8 tmpbyte;
661
662 local_irq_save(flags);
663
664 if (m5229_revision >= 0xC2) {
665 /*
666 * Ultra66 cable detection (from Host View)
667 * m5229, 0x4a, bit0: primary, bit1: secondary 80 pin
668 */
669 pci_read_config_byte(dev, 0x4a, &tmpbyte);
670 /*
671 * 0x4a, bit0 is 0 => primary channel
672 * has 80-pin (from host view)
673 */
674 if (!(tmpbyte & 0x01)) cable_80_pin[0] = 1;
675 /*
676 * 0x4a, bit1 is 0 => secondary channel
677 * has 80-pin (from host view)
678 */
679 if (!(tmpbyte & 0x02)) cable_80_pin[1] = 1;
680 /*
681 * Allow ata66 if cable of current channel has 80 pins
682 */
683 ata66 = (hwif->channel)?cable_80_pin[1]:cable_80_pin[0];
684 } else {
685 /*
686 * check m1533, 0x5e, bit 1~4 == 1001 => & 00011110 = 00010010
687 */
688 pci_read_config_byte(isa_dev, 0x5e, &tmpbyte);
689 chip_is_1543c_e = ((tmpbyte & 0x1e) == 0x12) ? 1: 0;
690 }
691
692 /*
693 * CD_ROM DMA on (m5229, 0x53, bit0)
694 * Enable this bit even if we want to use PIO
695 * PIO FIFO off (m5229, 0x53, bit1)
696 * The hardware will use 0x54h and 0x55h to control PIO FIFO
697 * (Not on later devices it seems)
698 *
699 * 0x53 changes meaning on later revs - we must no touch
700 * bit 1 on them. Need to check if 0x20 is the right break
701 */
702
703 pci_read_config_byte(dev, 0x53, &tmpbyte);
704
705 if(m5229_revision <= 0x20)
706 tmpbyte = (tmpbyte & (~0x02)) | 0x01;
707 else if (m5229_revision == 0xc7 || m5229_revision == 0xc8)
708 tmpbyte |= 0x03;
709 else
710 tmpbyte |= 0x01;
711
712 pci_write_config_byte(dev, 0x53, tmpbyte);
713
714 local_irq_restore(flags);
715
716 return(ata66);
717 }
718
719 /**
720 * init_hwif_common_ali15x3 - Set up ALI IDE hardware
721 * @hwif: IDE interface
722 *
723 * Initialize the IDE structure side of the ALi 15x3 driver.
724 */
725
726 static void __devinit init_hwif_common_ali15x3 (ide_hwif_t *hwif)
727 {
728 hwif->autodma = 0;
729 hwif->tuneproc = &ali15x3_tune_drive;
730 hwif->speedproc = &ali15x3_tune_chipset;
731 hwif->udma_filter = &ali_udma_filter;
732
733 /* don't use LBA48 DMA on ALi devices before rev 0xC5 */
734 hwif->no_lba48_dma = (m5229_revision <= 0xC4) ? 1 : 0;
735
736 if (!hwif->dma_base) {
737 hwif->drives[0].autotune = 1;
738 hwif->drives[1].autotune = 1;
739 return;
740 }
741
742 hwif->atapi_dma = 1;
743
744 if (m5229_revision <= 0x20)
745 hwif->ultra_mask = 0x00; /* no udma */
746 else if (m5229_revision < 0xC2)
747 hwif->ultra_mask = 0x07; /* udma0-2 */
748 else if (m5229_revision == 0xC2 || m5229_revision == 0xC3)
749 hwif->ultra_mask = 0x1f; /* udma0-4 */
750 else if (m5229_revision == 0xC4)
751 hwif->ultra_mask = 0x3f; /* udma0-5 */
752 else
753 hwif->ultra_mask = 0x7f; /* udma0-6 */
754
755 hwif->mwdma_mask = 0x07;
756 hwif->swdma_mask = 0x07;
757
758 if (m5229_revision >= 0x20) {
759 /*
760 * M1543C or newer for DMAing
761 */
762 hwif->ide_dma_check = &ali15x3_config_drive_for_dma;
763 hwif->dma_setup = &ali15x3_dma_setup;
764 if (!noautodma)
765 hwif->autodma = 1;
766 if (!(hwif->udma_four))
767 hwif->udma_four = ata66_ali15x3(hwif);
768 }
769 hwif->drives[0].autodma = hwif->autodma;
770 hwif->drives[1].autodma = hwif->autodma;
771 }
772
773 /**
774 * init_hwif_ali15x3 - Initialize the ALI IDE x86 stuff
775 * @hwif: interface to configure
776 *
777 * Obtain the IRQ tables for an ALi based IDE solution on the PC
778 * class platforms. This part of the code isn't applicable to the
779 * Sparc systems
780 */
781
782 static void __devinit init_hwif_ali15x3 (ide_hwif_t *hwif)
783 {
784 u8 ideic, inmir;
785 s8 irq_routing_table[] = { -1, 9, 3, 10, 4, 5, 7, 6,
786 1, 11, 0, 12, 0, 14, 0, 15 };
787 int irq = -1;
788
789 if (hwif->pci_dev->device == PCI_DEVICE_ID_AL_M5229)
790 hwif->irq = hwif->channel ? 15 : 14;
791
792 if (isa_dev) {
793 /*
794 * read IDE interface control
795 */
796 pci_read_config_byte(isa_dev, 0x58, &ideic);
797
798 /* bit0, bit1 */
799 ideic = ideic & 0x03;
800
801 /* get IRQ for IDE Controller */
802 if ((hwif->channel && ideic == 0x03) ||
803 (!hwif->channel && !ideic)) {
804 /*
805 * get SIRQ1 routing table
806 */
807 pci_read_config_byte(isa_dev, 0x44, &inmir);
808 inmir = inmir & 0x0f;
809 irq = irq_routing_table[inmir];
810 } else if (hwif->channel && !(ideic & 0x01)) {
811 /*
812 * get SIRQ2 routing table
813 */
814 pci_read_config_byte(isa_dev, 0x75, &inmir);
815 inmir = inmir & 0x0f;
816 irq = irq_routing_table[inmir];
817 }
818 if(irq >= 0)
819 hwif->irq = irq;
820 }
821
822 init_hwif_common_ali15x3(hwif);
823 }
824
825 /**
826 * init_dma_ali15x3 - set up DMA on ALi15x3
827 * @hwif: IDE interface
828 * @dmabase: DMA interface base PCI address
829 *
830 * Set up the DMA functionality on the ALi 15x3. For the ALi
831 * controllers this is generic so we can let the generic code do
832 * the actual work.
833 */
834
835 static void __devinit init_dma_ali15x3 (ide_hwif_t *hwif, unsigned long dmabase)
836 {
837 if (m5229_revision < 0x20)
838 return;
839 if (!hwif->channel)
840 outb(inb(dmabase + 2) & 0x60, dmabase + 2);
841 ide_setup_dma(hwif, dmabase, 8);
842 }
843
844 static ide_pci_device_t ali15x3_chipset __devinitdata = {
845 .name = "ALI15X3",
846 .init_chipset = init_chipset_ali15x3,
847 .init_hwif = init_hwif_ali15x3,
848 .init_dma = init_dma_ali15x3,
849 .channels = 2,
850 .autodma = AUTODMA,
851 .bootable = ON_BOARD,
852 };
853
854 /**
855 * alim15x3_init_one - set up an ALi15x3 IDE controller
856 * @dev: PCI device to set up
857 *
858 * Perform the actual set up for an ALi15x3 that has been found by the
859 * hot plug layer.
860 */
861
862 static int __devinit alim15x3_init_one(struct pci_dev *dev, const struct pci_device_id *id)
863 {
864 static struct pci_device_id ati_rs100[] = {
865 { PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS100) },
866 { },
867 };
868
869 ide_pci_device_t *d = &ali15x3_chipset;
870
871 if (pci_dev_present(ati_rs100))
872 printk(KERN_WARNING "alim15x3: ATI Radeon IGP Northbridge is not yet fully tested.\n");
873
874 #if defined(CONFIG_SPARC64)
875 d->init_hwif = init_hwif_common_ali15x3;
876 #endif /* CONFIG_SPARC64 */
877 return ide_setup_pci_device(dev, d);
878 }
879
880
881 static struct pci_device_id alim15x3_pci_tbl[] = {
882 { PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M5229, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
883 { PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M5228, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
884 { 0, },
885 };
886 MODULE_DEVICE_TABLE(pci, alim15x3_pci_tbl);
887
888 static struct pci_driver driver = {
889 .name = "ALI15x3_IDE",
890 .id_table = alim15x3_pci_tbl,
891 .probe = alim15x3_init_one,
892 };
893
894 static int __init ali15x3_ide_init(void)
895 {
896 return ide_pci_register_driver(&driver);
897 }
898
899 module_init(ali15x3_ide_init);
900
901 MODULE_AUTHOR("Michael Aubry, Andrzej Krzysztofowicz, CJ, Andre Hedrick, Alan Cox");
902 MODULE_DESCRIPTION("PCI driver module for ALi 15x3 IDE");
903 MODULE_LICENSE("GPL");
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