1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * pata_sis.c - SiS ATA driver
4 *
5 * (C) 2005 Red Hat
6 * (C) 2007,2009 Bartlomiej Zolnierkiewicz
7 *
8 * Based upon linux/drivers/ide/pci/sis5513.c
9 * Copyright (C) 1999-2000 Andre Hedrick <andre@linux-ide.org>
10 * Copyright (C) 2002 Lionel Bouton <Lionel.Bouton@inet6.fr>, Maintainer
11 * Copyright (C) 2003 Vojtech Pavlik <vojtech@suse.cz>
12 * SiS Taiwan : for direct support and hardware.
13 * Daniela Engert : for initial ATA100 advices and numerous others.
14 * John Fremlin, Manfred Spraul, Dave Morgan, Peter Kjellerstedt :
15 * for checking code correctness, providing patches.
16 * Original tests and design on the SiS620 chipset.
17 * ATA100 tests and design on the SiS735 chipset.
18 * ATA16/33 support from specs
19 * ATA133 support for SiS961/962 by L.C. Chang <lcchang@sis.com.tw>
20 *
21 *
22 * TODO
23 * Check MWDMA on drives that don't support MWDMA speed pio cycles ?
24 * More Testing
25 */
26
27 #include <linux/kernel.h>
28 #include <linux/module.h>
29 #include <linux/pci.h>
30 #include <linux/blkdev.h>
31 #include <linux/delay.h>
32 #include <linux/device.h>
33 #include <scsi/scsi_host.h>
34 #include <linux/libata.h>
35 #include <linux/ata.h>
36 #include "sis.h"
37
38 #define DRV_NAME "pata_sis"
39 #define DRV_VERSION "0.5.2"
40
41 struct sis_chipset {
42 u16 device; /* PCI host ID */
43 const struct ata_port_info *info; /* Info block */
44 /* Probably add family, cable detect type etc here to clean
45 up code later */
46 };
47
48 struct sis_laptop {
49 u16 device;
50 u16 subvendor;
51 u16 subdevice;
52 };
53
54 static const struct sis_laptop sis_laptop[] = {
55 /* devid, subvendor, subdev */
56 { 0x5513, 0x1043, 0x1107 }, /* ASUS A6K */
57 { 0x5513, 0x1734, 0x105F }, /* FSC Amilo A1630 */
58 { 0x5513, 0x1071, 0x8640 }, /* EasyNote K5305 */
59 /* end marker */
60 { 0, }
61 };
62
sis_short_ata40(struct pci_dev * dev)63 static int sis_short_ata40(struct pci_dev *dev)
64 {
65 const struct sis_laptop *lap = &sis_laptop[0];
66
67 while (lap->device) {
68 if (lap->device == dev->device &&
69 lap->subvendor == dev->subsystem_vendor &&
70 lap->subdevice == dev->subsystem_device)
71 return 1;
72 lap++;
73 }
74
75 return 0;
76 }
77
78 /**
79 * sis_old_port_base - return PCI configuration base for dev
80 * @adev: device
81 *
82 * Returns the base of the PCI configuration registers for this port
83 * number.
84 */
85
sis_old_port_base(struct ata_device * adev)86 static int sis_old_port_base(struct ata_device *adev)
87 {
88 return 0x40 + (4 * adev->link->ap->port_no) + (2 * adev->devno);
89 }
90
91 /**
92 * sis_port_base - return PCI configuration base for dev
93 * @adev: device
94 *
95 * Returns the base of the PCI configuration registers for this port
96 * number.
97 */
98
sis_port_base(struct ata_device * adev)99 static int sis_port_base(struct ata_device *adev)
100 {
101 struct ata_port *ap = adev->link->ap;
102 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
103 int port = 0x40;
104 u32 reg54;
105
106 /* If bit 30 is set then the registers are mapped at 0x70 not 0x40 */
107 pci_read_config_dword(pdev, 0x54, ®54);
108 if (reg54 & 0x40000000)
109 port = 0x70;
110
111 return port + (8 * ap->port_no) + (4 * adev->devno);
112 }
113
114 /**
115 * sis_133_cable_detect - check for 40/80 pin
116 * @ap: Port
117 *
118 * Perform cable detection for the later UDMA133 capable
119 * SiS chipset.
120 */
121
sis_133_cable_detect(struct ata_port * ap)122 static int sis_133_cable_detect(struct ata_port *ap)
123 {
124 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
125 u16 tmp;
126
127 /* The top bit of this register is the cable detect bit */
128 pci_read_config_word(pdev, 0x50 + 2 * ap->port_no, &tmp);
129 if ((tmp & 0x8000) && !sis_short_ata40(pdev))
130 return ATA_CBL_PATA40;
131 return ATA_CBL_PATA80;
132 }
133
134 /**
135 * sis_66_cable_detect - check for 40/80 pin
136 * @ap: Port
137 *
138 * Perform cable detection on the UDMA66, UDMA100 and early UDMA133
139 * SiS IDE controllers.
140 */
141
sis_66_cable_detect(struct ata_port * ap)142 static int sis_66_cable_detect(struct ata_port *ap)
143 {
144 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
145 u8 tmp;
146
147 /* Older chips keep cable detect in bits 4/5 of reg 0x48 */
148 pci_read_config_byte(pdev, 0x48, &tmp);
149 tmp >>= ap->port_no;
150 if ((tmp & 0x10) && !sis_short_ata40(pdev))
151 return ATA_CBL_PATA40;
152 return ATA_CBL_PATA80;
153 }
154
155
156 /**
157 * sis_pre_reset - probe begin
158 * @link: ATA link
159 * @deadline: deadline jiffies for the operation
160 *
161 * Set up cable type and use generic probe init
162 */
163
sis_pre_reset(struct ata_link * link,unsigned long deadline)164 static int sis_pre_reset(struct ata_link *link, unsigned long deadline)
165 {
166 static const struct pci_bits sis_enable_bits[] = {
167 { 0x4aU, 1U, 0x02UL, 0x02UL }, /* port 0 */
168 { 0x4aU, 1U, 0x04UL, 0x04UL }, /* port 1 */
169 };
170
171 struct ata_port *ap = link->ap;
172 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
173
174 if (!pci_test_config_bits(pdev, &sis_enable_bits[ap->port_no]))
175 return -ENOENT;
176
177 /* Clear the FIFO settings. We can't enable the FIFO until
178 we know we are poking at a disk */
179 pci_write_config_byte(pdev, 0x4B, 0);
180 return ata_sff_prereset(link, deadline);
181 }
182
183
184 /**
185 * sis_set_fifo - Set RWP fifo bits for this device
186 * @ap: Port
187 * @adev: Device
188 *
189 * SIS chipsets implement prefetch/postwrite bits for each device
190 * on both channels. This functionality is not ATAPI compatible and
191 * must be configured according to the class of device present
192 */
193
sis_set_fifo(struct ata_port * ap,struct ata_device * adev)194 static void sis_set_fifo(struct ata_port *ap, struct ata_device *adev)
195 {
196 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
197 u8 fifoctrl;
198 u8 mask = 0x11;
199
200 mask <<= (2 * ap->port_no);
201 mask <<= adev->devno;
202
203 /* This holds various bits including the FIFO control */
204 pci_read_config_byte(pdev, 0x4B, &fifoctrl);
205 fifoctrl &= ~mask;
206
207 /* Enable for ATA (disk) only */
208 if (adev->class == ATA_DEV_ATA)
209 fifoctrl |= mask;
210 pci_write_config_byte(pdev, 0x4B, fifoctrl);
211 }
212
213 /**
214 * sis_old_set_piomode - Initialize host controller PATA PIO timings
215 * @ap: Port whose timings we are configuring
216 * @adev: Device we are configuring for.
217 *
218 * Set PIO mode for device, in host controller PCI config space. This
219 * function handles PIO set up for all chips that are pre ATA100 and
220 * also early ATA100 devices.
221 *
222 * LOCKING:
223 * None (inherited from caller).
224 */
225
sis_old_set_piomode(struct ata_port * ap,struct ata_device * adev)226 static void sis_old_set_piomode (struct ata_port *ap, struct ata_device *adev)
227 {
228 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
229 int port = sis_old_port_base(adev);
230 u8 t1, t2;
231 int speed = adev->pio_mode - XFER_PIO_0;
232
233 static const u8 active[] = { 0x00, 0x07, 0x04, 0x03, 0x01 };
234 static const u8 recovery[] = { 0x00, 0x06, 0x04, 0x03, 0x03 };
235
236 sis_set_fifo(ap, adev);
237
238 pci_read_config_byte(pdev, port, &t1);
239 pci_read_config_byte(pdev, port + 1, &t2);
240
241 t1 &= ~0x0F; /* Clear active/recovery timings */
242 t2 &= ~0x07;
243
244 t1 |= active[speed];
245 t2 |= recovery[speed];
246
247 pci_write_config_byte(pdev, port, t1);
248 pci_write_config_byte(pdev, port + 1, t2);
249 }
250
251 /**
252 * sis_100_set_piomode - Initialize host controller PATA PIO timings
253 * @ap: Port whose timings we are configuring
254 * @adev: Device we are configuring for.
255 *
256 * Set PIO mode for device, in host controller PCI config space. This
257 * function handles PIO set up for ATA100 devices and early ATA133.
258 *
259 * LOCKING:
260 * None (inherited from caller).
261 */
262
sis_100_set_piomode(struct ata_port * ap,struct ata_device * adev)263 static void sis_100_set_piomode (struct ata_port *ap, struct ata_device *adev)
264 {
265 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
266 int port = sis_old_port_base(adev);
267 int speed = adev->pio_mode - XFER_PIO_0;
268
269 static const u8 actrec[] = { 0x00, 0x67, 0x44, 0x33, 0x31 };
270
271 sis_set_fifo(ap, adev);
272
273 pci_write_config_byte(pdev, port, actrec[speed]);
274 }
275
276 /**
277 * sis_133_set_piomode - Initialize host controller PATA PIO timings
278 * @ap: Port whose timings we are configuring
279 * @adev: Device we are configuring for.
280 *
281 * Set PIO mode for device, in host controller PCI config space. This
282 * function handles PIO set up for the later ATA133 devices.
283 *
284 * LOCKING:
285 * None (inherited from caller).
286 */
287
sis_133_set_piomode(struct ata_port * ap,struct ata_device * adev)288 static void sis_133_set_piomode (struct ata_port *ap, struct ata_device *adev)
289 {
290 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
291 int port;
292 u32 t1;
293 int speed = adev->pio_mode - XFER_PIO_0;
294
295 static const u32 timing133[] = {
296 0x28269000, /* Recovery << 24 | Act << 16 | Ini << 12 */
297 0x0C266000,
298 0x04263000,
299 0x0C0A3000,
300 0x05093000
301 };
302 static const u32 timing100[] = {
303 0x1E1C6000, /* Recovery << 24 | Act << 16 | Ini << 12 */
304 0x091C4000,
305 0x031C2000,
306 0x09072000,
307 0x04062000
308 };
309
310 sis_set_fifo(ap, adev);
311
312 port = sis_port_base(adev);
313 pci_read_config_dword(pdev, port, &t1);
314 t1 &= 0xC0C00FFF; /* Mask out timing */
315
316 if (t1 & 0x08) /* 100 or 133 ? */
317 t1 |= timing133[speed];
318 else
319 t1 |= timing100[speed];
320 pci_write_config_byte(pdev, port, t1);
321 }
322
323 /**
324 * sis_old_set_dmamode - Initialize host controller PATA DMA timings
325 * @ap: Port whose timings we are configuring
326 * @adev: Device to program
327 *
328 * Set UDMA/MWDMA mode for device, in host controller PCI config space.
329 * Handles pre UDMA and UDMA33 devices. Supports MWDMA as well unlike
330 * the old ide/pci driver.
331 *
332 * LOCKING:
333 * None (inherited from caller).
334 */
335
sis_old_set_dmamode(struct ata_port * ap,struct ata_device * adev)336 static void sis_old_set_dmamode (struct ata_port *ap, struct ata_device *adev)
337 {
338 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
339 int speed = adev->dma_mode - XFER_MW_DMA_0;
340 int drive_pci = sis_old_port_base(adev);
341 u16 timing;
342
343 static const u16 mwdma_bits[] = { 0x008, 0x302, 0x301 };
344 static const u16 udma_bits[] = { 0xE000, 0xC000, 0xA000 };
345
346 pci_read_config_word(pdev, drive_pci, &timing);
347
348 if (adev->dma_mode < XFER_UDMA_0) {
349 /* bits 3-0 hold recovery timing bits 8-10 active timing and
350 the higher bits are dependent on the device */
351 timing &= ~0x870F;
352 timing |= mwdma_bits[speed];
353 } else {
354 /* Bit 15 is UDMA on/off, bit 13-14 are cycle time */
355 speed = adev->dma_mode - XFER_UDMA_0;
356 timing &= ~0x6000;
357 timing |= udma_bits[speed];
358 }
359 pci_write_config_word(pdev, drive_pci, timing);
360 }
361
362 /**
363 * sis_66_set_dmamode - Initialize host controller PATA DMA timings
364 * @ap: Port whose timings we are configuring
365 * @adev: Device to program
366 *
367 * Set UDMA/MWDMA mode for device, in host controller PCI config space.
368 * Handles UDMA66 and early UDMA100 devices. Supports MWDMA as well unlike
369 * the old ide/pci driver.
370 *
371 * LOCKING:
372 * None (inherited from caller).
373 */
374
sis_66_set_dmamode(struct ata_port * ap,struct ata_device * adev)375 static void sis_66_set_dmamode (struct ata_port *ap, struct ata_device *adev)
376 {
377 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
378 int speed = adev->dma_mode - XFER_MW_DMA_0;
379 int drive_pci = sis_old_port_base(adev);
380 u16 timing;
381
382 /* MWDMA 0-2 and UDMA 0-5 */
383 static const u16 mwdma_bits[] = { 0x008, 0x302, 0x301 };
384 static const u16 udma_bits[] = { 0xF000, 0xD000, 0xB000, 0xA000, 0x9000, 0x8000 };
385
386 pci_read_config_word(pdev, drive_pci, &timing);
387
388 if (adev->dma_mode < XFER_UDMA_0) {
389 /* bits 3-0 hold recovery timing bits 8-10 active timing and
390 the higher bits are dependent on the device, bit 15 udma */
391 timing &= ~0x870F;
392 timing |= mwdma_bits[speed];
393 } else {
394 /* Bit 15 is UDMA on/off, bit 12-14 are cycle time */
395 speed = adev->dma_mode - XFER_UDMA_0;
396 timing &= ~0xF000;
397 timing |= udma_bits[speed];
398 }
399 pci_write_config_word(pdev, drive_pci, timing);
400 }
401
402 /**
403 * sis_100_set_dmamode - Initialize host controller PATA DMA timings
404 * @ap: Port whose timings we are configuring
405 * @adev: Device to program
406 *
407 * Set UDMA/MWDMA mode for device, in host controller PCI config space.
408 * Handles UDMA66 and early UDMA100 devices.
409 *
410 * LOCKING:
411 * None (inherited from caller).
412 */
413
sis_100_set_dmamode(struct ata_port * ap,struct ata_device * adev)414 static void sis_100_set_dmamode (struct ata_port *ap, struct ata_device *adev)
415 {
416 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
417 int speed = adev->dma_mode - XFER_MW_DMA_0;
418 int drive_pci = sis_old_port_base(adev);
419 u8 timing;
420
421 static const u8 udma_bits[] = { 0x8B, 0x87, 0x85, 0x83, 0x82, 0x81};
422
423 pci_read_config_byte(pdev, drive_pci + 1, &timing);
424
425 if (adev->dma_mode < XFER_UDMA_0) {
426 /* NOT SUPPORTED YET: NEED DATA SHEET. DITTO IN OLD DRIVER */
427 } else {
428 /* Bit 7 is UDMA on/off, bit 0-3 are cycle time */
429 speed = adev->dma_mode - XFER_UDMA_0;
430 timing &= ~0x8F;
431 timing |= udma_bits[speed];
432 }
433 pci_write_config_byte(pdev, drive_pci + 1, timing);
434 }
435
436 /**
437 * sis_133_early_set_dmamode - Initialize host controller PATA DMA timings
438 * @ap: Port whose timings we are configuring
439 * @adev: Device to program
440 *
441 * Set UDMA/MWDMA mode for device, in host controller PCI config space.
442 * Handles early SiS 961 bridges.
443 *
444 * LOCKING:
445 * None (inherited from caller).
446 */
447
sis_133_early_set_dmamode(struct ata_port * ap,struct ata_device * adev)448 static void sis_133_early_set_dmamode (struct ata_port *ap, struct ata_device *adev)
449 {
450 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
451 int speed = adev->dma_mode - XFER_MW_DMA_0;
452 int drive_pci = sis_old_port_base(adev);
453 u8 timing;
454 /* Low 4 bits are timing */
455 static const u8 udma_bits[] = { 0x8F, 0x8A, 0x87, 0x85, 0x83, 0x82, 0x81};
456
457 pci_read_config_byte(pdev, drive_pci + 1, &timing);
458
459 if (adev->dma_mode < XFER_UDMA_0) {
460 /* NOT SUPPORTED YET: NEED DATA SHEET. DITTO IN OLD DRIVER */
461 } else {
462 /* Bit 7 is UDMA on/off, bit 0-3 are cycle time */
463 speed = adev->dma_mode - XFER_UDMA_0;
464 timing &= ~0x8F;
465 timing |= udma_bits[speed];
466 }
467 pci_write_config_byte(pdev, drive_pci + 1, timing);
468 }
469
470 /**
471 * sis_133_set_dmamode - Initialize host controller PATA DMA timings
472 * @ap: Port whose timings we are configuring
473 * @adev: Device to program
474 *
475 * Set UDMA/MWDMA mode for device, in host controller PCI config space.
476 *
477 * LOCKING:
478 * None (inherited from caller).
479 */
480
sis_133_set_dmamode(struct ata_port * ap,struct ata_device * adev)481 static void sis_133_set_dmamode (struct ata_port *ap, struct ata_device *adev)
482 {
483 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
484 int port;
485 u32 t1;
486
487 port = sis_port_base(adev);
488 pci_read_config_dword(pdev, port, &t1);
489
490 if (adev->dma_mode < XFER_UDMA_0) {
491 /* Recovery << 24 | Act << 16 | Ini << 12, like PIO modes */
492 static const u32 timing_u100[] = { 0x19154000, 0x06072000, 0x04062000 };
493 static const u32 timing_u133[] = { 0x221C6000, 0x0C0A3000, 0x05093000 };
494 int speed = adev->dma_mode - XFER_MW_DMA_0;
495
496 t1 &= 0xC0C00FFF;
497 /* disable UDMA */
498 t1 &= ~0x00000004;
499 if (t1 & 0x08)
500 t1 |= timing_u133[speed];
501 else
502 t1 |= timing_u100[speed];
503 } else {
504 /* bits 4- cycle time 8 - cvs time */
505 static const u32 timing_u100[] = { 0x6B0, 0x470, 0x350, 0x140, 0x120, 0x110, 0x000 };
506 static const u32 timing_u133[] = { 0x9F0, 0x6A0, 0x470, 0x250, 0x230, 0x220, 0x210 };
507 int speed = adev->dma_mode - XFER_UDMA_0;
508
509 t1 &= ~0x00000FF0;
510 /* enable UDMA */
511 t1 |= 0x00000004;
512 if (t1 & 0x08)
513 t1 |= timing_u133[speed];
514 else
515 t1 |= timing_u100[speed];
516 }
517 pci_write_config_dword(pdev, port, t1);
518 }
519
520 /**
521 * sis_133_mode_filter - mode selection filter
522 * @adev: ATA device
523 * @mask: received mask to manipulate and pass back
524 *
525 * Block UDMA6 on devices that do not support it.
526 */
527
sis_133_mode_filter(struct ata_device * adev,unsigned int mask)528 static unsigned int sis_133_mode_filter(struct ata_device *adev, unsigned int mask)
529 {
530 struct ata_port *ap = adev->link->ap;
531 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
532 int port = sis_port_base(adev);
533 u32 t1;
534
535 pci_read_config_dword(pdev, port, &t1);
536 /* if ATA133 is disabled, mask it out */
537 if (!(t1 & 0x08))
538 mask &= ~(0xC0 << ATA_SHIFT_UDMA);
539 return mask;
540 }
541
542 static struct scsi_host_template sis_sht = {
543 ATA_BMDMA_SHT(DRV_NAME),
544 };
545
546 static struct ata_port_operations sis_133_for_sata_ops = {
547 .inherits = &ata_bmdma_port_ops,
548 .set_piomode = sis_133_set_piomode,
549 .set_dmamode = sis_133_set_dmamode,
550 .cable_detect = sis_133_cable_detect,
551 };
552
553 static struct ata_port_operations sis_base_ops = {
554 .inherits = &ata_bmdma_port_ops,
555 .prereset = sis_pre_reset,
556 };
557
558 static struct ata_port_operations sis_133_ops = {
559 .inherits = &sis_base_ops,
560 .set_piomode = sis_133_set_piomode,
561 .set_dmamode = sis_133_set_dmamode,
562 .cable_detect = sis_133_cable_detect,
563 .mode_filter = sis_133_mode_filter,
564 };
565
566 static struct ata_port_operations sis_133_early_ops = {
567 .inherits = &sis_base_ops,
568 .set_piomode = sis_100_set_piomode,
569 .set_dmamode = sis_133_early_set_dmamode,
570 .cable_detect = sis_66_cable_detect,
571 };
572
573 static struct ata_port_operations sis_100_ops = {
574 .inherits = &sis_base_ops,
575 .set_piomode = sis_100_set_piomode,
576 .set_dmamode = sis_100_set_dmamode,
577 .cable_detect = sis_66_cable_detect,
578 };
579
580 static struct ata_port_operations sis_66_ops = {
581 .inherits = &sis_base_ops,
582 .set_piomode = sis_old_set_piomode,
583 .set_dmamode = sis_66_set_dmamode,
584 .cable_detect = sis_66_cable_detect,
585 };
586
587 static struct ata_port_operations sis_old_ops = {
588 .inherits = &sis_base_ops,
589 .set_piomode = sis_old_set_piomode,
590 .set_dmamode = sis_old_set_dmamode,
591 .cable_detect = ata_cable_40wire,
592 };
593
594 static const struct ata_port_info sis_info = {
595 .flags = ATA_FLAG_SLAVE_POSS,
596 .pio_mask = ATA_PIO4,
597 .mwdma_mask = ATA_MWDMA2,
598 /* No UDMA */
599 .port_ops = &sis_old_ops,
600 };
601 static const struct ata_port_info sis_info33 = {
602 .flags = ATA_FLAG_SLAVE_POSS,
603 .pio_mask = ATA_PIO4,
604 .mwdma_mask = ATA_MWDMA2,
605 .udma_mask = ATA_UDMA2,
606 .port_ops = &sis_old_ops,
607 };
608 static const struct ata_port_info sis_info66 = {
609 .flags = ATA_FLAG_SLAVE_POSS,
610 .pio_mask = ATA_PIO4,
611 /* No MWDMA */
612 .udma_mask = ATA_UDMA4,
613 .port_ops = &sis_66_ops,
614 };
615 static const struct ata_port_info sis_info100 = {
616 .flags = ATA_FLAG_SLAVE_POSS,
617 .pio_mask = ATA_PIO4,
618 /* No MWDMA */
619 .udma_mask = ATA_UDMA5,
620 .port_ops = &sis_100_ops,
621 };
622 static const struct ata_port_info sis_info100_early = {
623 .flags = ATA_FLAG_SLAVE_POSS,
624 .pio_mask = ATA_PIO4,
625 /* No MWDMA */
626 .udma_mask = ATA_UDMA5,
627 .port_ops = &sis_66_ops,
628 };
629 static const struct ata_port_info sis_info133 = {
630 .flags = ATA_FLAG_SLAVE_POSS,
631 .pio_mask = ATA_PIO4,
632 .mwdma_mask = ATA_MWDMA2,
633 .udma_mask = ATA_UDMA6,
634 .port_ops = &sis_133_ops,
635 };
636 const struct ata_port_info sis_info133_for_sata = {
637 .flags = ATA_FLAG_SLAVE_POSS,
638 .pio_mask = ATA_PIO4,
639 /* No MWDMA */
640 .udma_mask = ATA_UDMA6,
641 .port_ops = &sis_133_for_sata_ops,
642 };
643 static const struct ata_port_info sis_info133_early = {
644 .flags = ATA_FLAG_SLAVE_POSS,
645 .pio_mask = ATA_PIO4,
646 /* No MWDMA */
647 .udma_mask = ATA_UDMA6,
648 .port_ops = &sis_133_early_ops,
649 };
650
651 /* Privately shared with the SiS180 SATA driver, not for use elsewhere */
652 EXPORT_SYMBOL_GPL(sis_info133_for_sata);
653
sis_fixup(struct pci_dev * pdev,struct sis_chipset * sis)654 static void sis_fixup(struct pci_dev *pdev, struct sis_chipset *sis)
655 {
656 u16 regw;
657 u8 reg;
658
659 if (sis->info == &sis_info133) {
660 pci_read_config_word(pdev, 0x50, ®w);
661 if (regw & 0x08)
662 pci_write_config_word(pdev, 0x50, regw & ~0x08);
663 pci_read_config_word(pdev, 0x52, ®w);
664 if (regw & 0x08)
665 pci_write_config_word(pdev, 0x52, regw & ~0x08);
666 return;
667 }
668
669 if (sis->info == &sis_info133_early || sis->info == &sis_info100) {
670 /* Fix up latency */
671 pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x80);
672 /* Set compatibility bit */
673 pci_read_config_byte(pdev, 0x49, ®);
674 if (!(reg & 0x01))
675 pci_write_config_byte(pdev, 0x49, reg | 0x01);
676 return;
677 }
678
679 if (sis->info == &sis_info66 || sis->info == &sis_info100_early) {
680 /* Fix up latency */
681 pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x80);
682 /* Set compatibility bit */
683 pci_read_config_byte(pdev, 0x52, ®);
684 if (!(reg & 0x04))
685 pci_write_config_byte(pdev, 0x52, reg | 0x04);
686 return;
687 }
688
689 if (sis->info == &sis_info33) {
690 pci_read_config_byte(pdev, PCI_CLASS_PROG, ®);
691 if (( reg & 0x0F ) != 0x00)
692 pci_write_config_byte(pdev, PCI_CLASS_PROG, reg & 0xF0);
693 /* Fall through to ATA16 fixup below */
694 }
695
696 if (sis->info == &sis_info || sis->info == &sis_info33) {
697 /* force per drive recovery and active timings
698 needed on ATA_33 and below chips */
699 pci_read_config_byte(pdev, 0x52, ®);
700 if (!(reg & 0x08))
701 pci_write_config_byte(pdev, 0x52, reg|0x08);
702 return;
703 }
704
705 BUG();
706 }
707
708 /**
709 * sis_init_one - Register SiS ATA PCI device with kernel services
710 * @pdev: PCI device to register
711 * @ent: Entry in sis_pci_tbl matching with @pdev
712 *
713 * Called from kernel PCI layer. We probe for combined mode (sigh),
714 * and then hand over control to libata, for it to do the rest.
715 *
716 * LOCKING:
717 * Inherited from PCI layer (may sleep).
718 *
719 * RETURNS:
720 * Zero on success, or -ERRNO value.
721 */
722
sis_init_one(struct pci_dev * pdev,const struct pci_device_id * ent)723 static int sis_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
724 {
725 const struct ata_port_info *ppi[] = { NULL, NULL };
726 struct pci_dev *host = NULL;
727 struct sis_chipset *chipset = NULL;
728 struct sis_chipset *sets;
729 int rc;
730
731 static struct sis_chipset sis_chipsets[] = {
732
733 { 0x0968, &sis_info133 },
734 { 0x0966, &sis_info133 },
735 { 0x0965, &sis_info133 },
736 { 0x0745, &sis_info100 },
737 { 0x0735, &sis_info100 },
738 { 0x0733, &sis_info100 },
739 { 0x0635, &sis_info100 },
740 { 0x0633, &sis_info100 },
741
742 { 0x0730, &sis_info100_early }, /* 100 with ATA 66 layout */
743 { 0x0550, &sis_info100_early }, /* 100 with ATA 66 layout */
744
745 { 0x0640, &sis_info66 },
746 { 0x0630, &sis_info66 },
747 { 0x0620, &sis_info66 },
748 { 0x0540, &sis_info66 },
749 { 0x0530, &sis_info66 },
750
751 { 0x5600, &sis_info33 },
752 { 0x5598, &sis_info33 },
753 { 0x5597, &sis_info33 },
754 { 0x5591, &sis_info33 },
755 { 0x5582, &sis_info33 },
756 { 0x5581, &sis_info33 },
757
758 { 0x5596, &sis_info },
759 { 0x5571, &sis_info },
760 { 0x5517, &sis_info },
761 { 0x5511, &sis_info },
762
763 {0}
764 };
765 static struct sis_chipset sis133_early = {
766 0x0, &sis_info133_early
767 };
768 static struct sis_chipset sis133 = {
769 0x0, &sis_info133
770 };
771 static struct sis_chipset sis100_early = {
772 0x0, &sis_info100_early
773 };
774 static struct sis_chipset sis100 = {
775 0x0, &sis_info100
776 };
777
778 ata_print_version_once(&pdev->dev, DRV_VERSION);
779
780 rc = pcim_enable_device(pdev);
781 if (rc)
782 return rc;
783
784 /* We have to find the bridge first */
785 for (sets = &sis_chipsets[0]; sets->device; sets++) {
786 host = pci_get_device(PCI_VENDOR_ID_SI, sets->device, NULL);
787 if (host != NULL) {
788 chipset = sets; /* Match found */
789 if (sets->device == 0x630) { /* SIS630 */
790 if (host->revision >= 0x30) /* 630 ET */
791 chipset = &sis100_early;
792 }
793 break;
794 }
795 }
796
797 /* Look for concealed bridges */
798 if (chipset == NULL) {
799 /* Second check */
800 u32 idemisc;
801 u16 trueid;
802
803 /* Disable ID masking and register remapping then
804 see what the real ID is */
805
806 pci_read_config_dword(pdev, 0x54, &idemisc);
807 pci_write_config_dword(pdev, 0x54, idemisc & 0x7fffffff);
808 pci_read_config_word(pdev, PCI_DEVICE_ID, &trueid);
809 pci_write_config_dword(pdev, 0x54, idemisc);
810
811 switch(trueid) {
812 case 0x5518: /* SIS 962/963 */
813 dev_info(&pdev->dev,
814 "SiS 962/963 MuTIOL IDE UDMA133 controller\n");
815 chipset = &sis133;
816 if ((idemisc & 0x40000000) == 0) {
817 pci_write_config_dword(pdev, 0x54, idemisc | 0x40000000);
818 dev_info(&pdev->dev,
819 "Switching to 5513 register mapping\n");
820 }
821 break;
822 case 0x0180: /* SIS 965/965L */
823 chipset = &sis133;
824 break;
825 case 0x1180: /* SIS 966/966L */
826 chipset = &sis133;
827 break;
828 }
829 }
830
831 /* Further check */
832 if (chipset == NULL) {
833 struct pci_dev *lpc_bridge;
834 u16 trueid;
835 u8 prefctl;
836 u8 idecfg;
837
838 /* Try the second unmasking technique */
839 pci_read_config_byte(pdev, 0x4a, &idecfg);
840 pci_write_config_byte(pdev, 0x4a, idecfg | 0x10);
841 pci_read_config_word(pdev, PCI_DEVICE_ID, &trueid);
842 pci_write_config_byte(pdev, 0x4a, idecfg);
843
844 switch(trueid) {
845 case 0x5517:
846 lpc_bridge = pci_get_slot(pdev->bus, 0x10); /* Bus 0 Dev 2 Fn 0 */
847 if (lpc_bridge == NULL)
848 break;
849 pci_read_config_byte(pdev, 0x49, &prefctl);
850 pci_dev_put(lpc_bridge);
851
852 if (lpc_bridge->revision == 0x10 && (prefctl & 0x80)) {
853 chipset = &sis133_early;
854 break;
855 }
856 chipset = &sis100;
857 break;
858 }
859 }
860 pci_dev_put(host);
861
862 /* No chipset info, no support */
863 if (chipset == NULL)
864 return -ENODEV;
865
866 ppi[0] = chipset->info;
867
868 sis_fixup(pdev, chipset);
869
870 return ata_pci_bmdma_init_one(pdev, ppi, &sis_sht, chipset, 0);
871 }
872
873 #ifdef CONFIG_PM_SLEEP
sis_reinit_one(struct pci_dev * pdev)874 static int sis_reinit_one(struct pci_dev *pdev)
875 {
876 struct ata_host *host = pci_get_drvdata(pdev);
877 int rc;
878
879 rc = ata_pci_device_do_resume(pdev);
880 if (rc)
881 return rc;
882
883 sis_fixup(pdev, host->private_data);
884
885 ata_host_resume(host);
886 return 0;
887 }
888 #endif
889
890 static const struct pci_device_id sis_pci_tbl[] = {
891 { PCI_VDEVICE(SI, 0x5513), }, /* SiS 5513 */
892 { PCI_VDEVICE(SI, 0x5518), }, /* SiS 5518 */
893 { PCI_VDEVICE(SI, 0x1180), }, /* SiS 1180 */
894
895 { }
896 };
897
898 static struct pci_driver sis_pci_driver = {
899 .name = DRV_NAME,
900 .id_table = sis_pci_tbl,
901 .probe = sis_init_one,
902 .remove = ata_pci_remove_one,
903 #ifdef CONFIG_PM_SLEEP
904 .suspend = ata_pci_device_suspend,
905 .resume = sis_reinit_one,
906 #endif
907 };
908
909 module_pci_driver(sis_pci_driver);
910
911 MODULE_AUTHOR("Alan Cox");
912 MODULE_DESCRIPTION("SCSI low-level driver for SiS ATA");
913 MODULE_LICENSE("GPL");
914 MODULE_DEVICE_TABLE(pci, sis_pci_tbl);
915 MODULE_VERSION(DRV_VERSION);
916
