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Committer: Michael Beasley <mike@snafu.setup>
[mikesnafu-overlay.git] / drivers / ata / pata_sis.c
blobdc7e91562e436fafadab3d2796e328ac4cf5b351
1 /*
2 * pata_sis.c - SiS ATA driver
3 *
4 * (C) 2005 Red Hat <alan@redhat.com>
5 * (C) 2007 Bartlomiej Zolnierkiewicz
6 *
7 * Based upon linux/drivers/ide/pci/sis5513.c
8 * Copyright (C) 1999-2000 Andre Hedrick <andre@linux-ide.org>
9 * Copyright (C) 2002 Lionel Bouton <Lionel.Bouton@inet6.fr>, Maintainer
10 * Copyright (C) 2003 Vojtech Pavlik <vojtech@suse.cz>
11 * SiS Taiwan : for direct support and hardware.
12 * Daniela Engert : for initial ATA100 advices and numerous others.
13 * John Fremlin, Manfred Spraul, Dave Morgan, Peter Kjellerstedt :
14 * for checking code correctness, providing patches.
15 * Original tests and design on the SiS620 chipset.
16 * ATA100 tests and design on the SiS735 chipset.
17 * ATA16/33 support from specs
18 * ATA133 support for SiS961/962 by L.C. Chang <lcchang@sis.com.tw>
19 *
20 *
21 * TODO
22 * Check MWDMA on drives that don't support MWDMA speed pio cycles ?
23 * More Testing
24 */
25
26 #include <linux/kernel.h>
27 #include <linux/module.h>
28 #include <linux/pci.h>
29 #include <linux/init.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
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
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_133_cable_detect - check for 40/80 pin
93 * @ap: Port
94 * @deadline: deadline jiffies for the operation
95 *
96 * Perform cable detection for the later UDMA133 capable
97 * SiS chipset.
98 */
99
100 static int sis_133_cable_detect(struct ata_port *ap)
101 {
102 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
103 u16 tmp;
104
105 /* The top bit of this register is the cable detect bit */
106 pci_read_config_word(pdev, 0x50 + 2 * ap->port_no, &tmp);
107 if ((tmp & 0x8000) && !sis_short_ata40(pdev))
108 return ATA_CBL_PATA40;
109 return ATA_CBL_PATA80;
110 }
111
112 /**
113 * sis_66_cable_detect - check for 40/80 pin
114 * @ap: Port
115 * @deadline: deadline jiffies for the operation
116 *
117 * Perform cable detection on the UDMA66, UDMA100 and early UDMA133
118 * SiS IDE controllers.
119 */
120
121 static int sis_66_cable_detect(struct ata_port *ap)
122 {
123 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
124 u8 tmp;
125
126 /* Older chips keep cable detect in bits 4/5 of reg 0x48 */
127 pci_read_config_byte(pdev, 0x48, &tmp);
128 tmp >>= ap->port_no;
129 if ((tmp & 0x10) && !sis_short_ata40(pdev))
130 return ATA_CBL_PATA40;
131 return ATA_CBL_PATA80;
132 }
133
134
135 /**
136 * sis_pre_reset - probe begin
137 * @link: ATA link
138 * @deadline: deadline jiffies for the operation
139 *
140 * Set up cable type and use generic probe init
141 */
142
143 static int sis_pre_reset(struct ata_link *link, unsigned long deadline)
144 {
145 static const struct pci_bits sis_enable_bits[] = {
146 { 0x4aU, 1U, 0x02UL, 0x02UL }, /* port 0 */
147 { 0x4aU, 1U, 0x04UL, 0x04UL }, /* port 1 */
148 };
149
150 struct ata_port *ap = link->ap;
151 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
152
153 if (!pci_test_config_bits(pdev, &sis_enable_bits[ap->port_no]))
154 return -ENOENT;
155
156 /* Clear the FIFO settings. We can't enable the FIFO until
157 we know we are poking at a disk */
158 pci_write_config_byte(pdev, 0x4B, 0);
159 return ata_std_prereset(link, deadline);
160 }
161
162
163 /**
164 * sis_error_handler - Probe specified port on PATA host controller
165 * @ap: Port to probe
166 *
167 * LOCKING:
168 * None (inherited from caller).
169 */
170
171 static void sis_error_handler(struct ata_port *ap)
172 {
173 ata_bmdma_drive_eh(ap, sis_pre_reset, ata_std_softreset, NULL, ata_std_postreset);
174 }
175
176 /**
177 * sis_set_fifo - Set RWP fifo bits for this device
178 * @ap: Port
179 * @adev: Device
180 *
181 * SIS chipsets implement prefetch/postwrite bits for each device
182 * on both channels. This functionality is not ATAPI compatible and
183 * must be configured according to the class of device present
184 */
185
186 static void sis_set_fifo(struct ata_port *ap, struct ata_device *adev)
187 {
188 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
189 u8 fifoctrl;
190 u8 mask = 0x11;
191
192 mask <<= (2 * ap->port_no);
193 mask <<= adev->devno;
194
195 /* This holds various bits including the FIFO control */
196 pci_read_config_byte(pdev, 0x4B, &fifoctrl);
197 fifoctrl &= ~mask;
198
199 /* Enable for ATA (disk) only */
200 if (adev->class == ATA_DEV_ATA)
201 fifoctrl |= mask;
202 pci_write_config_byte(pdev, 0x4B, fifoctrl);
203 }
204
205 /**
206 * sis_old_set_piomode - Initialize host controller PATA PIO timings
207 * @ap: Port whose timings we are configuring
208 * @adev: Device we are configuring for.
209 *
210 * Set PIO mode for device, in host controller PCI config space. This
211 * function handles PIO set up for all chips that are pre ATA100 and
212 * also early ATA100 devices.
213 *
214 * LOCKING:
215 * None (inherited from caller).
216 */
217
218 static void sis_old_set_piomode (struct ata_port *ap, struct ata_device *adev)
219 {
220 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
221 int port = sis_old_port_base(adev);
222 u8 t1, t2;
223 int speed = adev->pio_mode - XFER_PIO_0;
224
225 const u8 active[] = { 0x00, 0x07, 0x04, 0x03, 0x01 };
226 const u8 recovery[] = { 0x00, 0x06, 0x04, 0x03, 0x03 };
227
228 sis_set_fifo(ap, adev);
229
230 pci_read_config_byte(pdev, port, &t1);
231 pci_read_config_byte(pdev, port + 1, &t2);
232
233 t1 &= ~0x0F; /* Clear active/recovery timings */
234 t2 &= ~0x07;
235
236 t1 |= active[speed];
237 t2 |= recovery[speed];
238
239 pci_write_config_byte(pdev, port, t1);
240 pci_write_config_byte(pdev, port + 1, t2);
241 }
242
243 /**
244 * sis_100_set_piomode - Initialize host controller PATA PIO timings
245 * @ap: Port whose timings we are configuring
246 * @adev: Device we are configuring for.
247 *
248 * Set PIO mode for device, in host controller PCI config space. This
249 * function handles PIO set up for ATA100 devices and early ATA133.
250 *
251 * LOCKING:
252 * None (inherited from caller).
253 */
254
255 static void sis_100_set_piomode (struct ata_port *ap, struct ata_device *adev)
256 {
257 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
258 int port = sis_old_port_base(adev);
259 int speed = adev->pio_mode - XFER_PIO_0;
260
261 const u8 actrec[] = { 0x00, 0x67, 0x44, 0x33, 0x31 };
262
263 sis_set_fifo(ap, adev);
264
265 pci_write_config_byte(pdev, port, actrec[speed]);
266 }
267
268 /**
269 * sis_133_set_piomode - Initialize host controller PATA PIO timings
270 * @ap: Port whose timings we are configuring
271 * @adev: Device we are configuring for.
272 *
273 * Set PIO mode for device, in host controller PCI config space. This
274 * function handles PIO set up for the later ATA133 devices.
275 *
276 * LOCKING:
277 * None (inherited from caller).
278 */
279
280 static void sis_133_set_piomode (struct ata_port *ap, struct ata_device *adev)
281 {
282 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
283 int port = 0x40;
284 u32 t1;
285 u32 reg54;
286 int speed = adev->pio_mode - XFER_PIO_0;
287
288 const u32 timing133[] = {
289 0x28269000, /* Recovery << 24 | Act << 16 | Ini << 12 */
290 0x0C266000,
291 0x04263000,
292 0x0C0A3000,
293 0x05093000
294 };
295 const u32 timing100[] = {
296 0x1E1C6000, /* Recovery << 24 | Act << 16 | Ini << 12 */
297 0x091C4000,
298 0x031C2000,
299 0x09072000,
300 0x04062000
301 };
302
303 sis_set_fifo(ap, adev);
304
305 /* If bit 14 is set then the registers are mapped at 0x70 not 0x40 */
306 pci_read_config_dword(pdev, 0x54, &reg54);
307 if (reg54 & 0x40000000)
308 port = 0x70;
309 port += 8 * ap->port_no + 4 * adev->devno;
310
311 pci_read_config_dword(pdev, port, &t1);
312 t1 &= 0xC0C00FFF; /* Mask out timing */
313
314 if (t1 & 0x08) /* 100 or 133 ? */
315 t1 |= timing133[speed];
316 else
317 t1 |= timing100[speed];
318 pci_write_config_byte(pdev, port, t1);
319 }
320
321 /**
322 * sis_old_set_dmamode - Initialize host controller PATA DMA timings
323 * @ap: Port whose timings we are configuring
324 * @adev: Device to program
325 *
326 * Set UDMA/MWDMA mode for device, in host controller PCI config space.
327 * Handles pre UDMA and UDMA33 devices. Supports MWDMA as well unlike
328 * the old ide/pci driver.
329 *
330 * LOCKING:
331 * None (inherited from caller).
332 */
333
334 static void sis_old_set_dmamode (struct ata_port *ap, struct ata_device *adev)
335 {
336 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
337 int speed = adev->dma_mode - XFER_MW_DMA_0;
338 int drive_pci = sis_old_port_base(adev);
339 u16 timing;
340
341 const u16 mwdma_bits[] = { 0x008, 0x302, 0x301 };
342 const u16 udma_bits[] = { 0xE000, 0xC000, 0xA000 };
343
344 pci_read_config_word(pdev, drive_pci, &timing);
345
346 if (adev->dma_mode < XFER_UDMA_0) {
347 /* bits 3-0 hold recovery timing bits 8-10 active timing and
348 the higher bits are dependant on the device */
349 timing &= ~0x870F;
350 timing |= mwdma_bits[speed];
351 } else {
352 /* Bit 15 is UDMA on/off, bit 13-14 are cycle time */
353 speed = adev->dma_mode - XFER_UDMA_0;
354 timing &= ~0x6000;
355 timing |= udma_bits[speed];
356 }
357 pci_write_config_word(pdev, drive_pci, timing);
358 }
359
360 /**
361 * sis_66_set_dmamode - Initialize host controller PATA DMA timings
362 * @ap: Port whose timings we are configuring
363 * @adev: Device to program
364 *
365 * Set UDMA/MWDMA mode for device, in host controller PCI config space.
366 * Handles UDMA66 and early UDMA100 devices. Supports MWDMA as well unlike
367 * the old ide/pci driver.
368 *
369 * LOCKING:
370 * None (inherited from caller).
371 */
372
373 static void sis_66_set_dmamode (struct ata_port *ap, struct ata_device *adev)
374 {
375 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
376 int speed = adev->dma_mode - XFER_MW_DMA_0;
377 int drive_pci = sis_old_port_base(adev);
378 u16 timing;
379
380 /* MWDMA 0-2 and UDMA 0-5 */
381 const u16 mwdma_bits[] = { 0x008, 0x302, 0x301 };
382 const u16 udma_bits[] = { 0xF000, 0xD000, 0xB000, 0xA000, 0x9000, 0x8000 };
383
384 pci_read_config_word(pdev, drive_pci, &timing);
385
386 if (adev->dma_mode < XFER_UDMA_0) {
387 /* bits 3-0 hold recovery timing bits 8-10 active timing and
388 the higher bits are dependant on the device, bit 15 udma */
389 timing &= ~0x870F;
390 timing |= mwdma_bits[speed];
391 } else {
392 /* Bit 15 is UDMA on/off, bit 12-14 are cycle time */
393 speed = adev->dma_mode - XFER_UDMA_0;
394 timing &= ~0xF000;
395 timing |= udma_bits[speed];
396 }
397 pci_write_config_word(pdev, drive_pci, timing);
398 }
399
400 /**
401 * sis_100_set_dmamode - Initialize host controller PATA DMA timings
402 * @ap: Port whose timings we are configuring
403 * @adev: Device to program
404 *
405 * Set UDMA/MWDMA mode for device, in host controller PCI config space.
406 * Handles UDMA66 and early UDMA100 devices.
407 *
408 * LOCKING:
409 * None (inherited from caller).
410 */
411
412 static void sis_100_set_dmamode (struct ata_port *ap, struct ata_device *adev)
413 {
414 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
415 int speed = adev->dma_mode - XFER_MW_DMA_0;
416 int drive_pci = sis_old_port_base(adev);
417 u8 timing;
418
419 const u8 udma_bits[] = { 0x8B, 0x87, 0x85, 0x83, 0x82, 0x81};
420
421 pci_read_config_byte(pdev, drive_pci + 1, &timing);
422
423 if (adev->dma_mode < XFER_UDMA_0) {
424 /* NOT SUPPORTED YET: NEED DATA SHEET. DITTO IN OLD DRIVER */
425 } else {
426 /* Bit 7 is UDMA on/off, bit 0-3 are cycle time */
427 speed = adev->dma_mode - XFER_UDMA_0;
428 timing &= ~0x8F;
429 timing |= udma_bits[speed];
430 }
431 pci_write_config_byte(pdev, drive_pci + 1, timing);
432 }
433
434 /**
435 * sis_133_early_set_dmamode - Initialize host controller PATA DMA timings
436 * @ap: Port whose timings we are configuring
437 * @adev: Device to program
438 *
439 * Set UDMA/MWDMA mode for device, in host controller PCI config space.
440 * Handles early SiS 961 bridges.
441 *
442 * LOCKING:
443 * None (inherited from caller).
444 */
445
446 static void sis_133_early_set_dmamode (struct ata_port *ap, struct ata_device *adev)
447 {
448 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
449 int speed = adev->dma_mode - XFER_MW_DMA_0;
450 int drive_pci = sis_old_port_base(adev);
451 u8 timing;
452 /* Low 4 bits are timing */
453 static const u8 udma_bits[] = { 0x8F, 0x8A, 0x87, 0x85, 0x83, 0x82, 0x81};
454
455 pci_read_config_byte(pdev, drive_pci + 1, &timing);
456
457 if (adev->dma_mode < XFER_UDMA_0) {
458 /* NOT SUPPORTED YET: NEED DATA SHEET. DITTO IN OLD DRIVER */
459 } else {
460 /* Bit 7 is UDMA on/off, bit 0-3 are cycle time */
461 speed = adev->dma_mode - XFER_UDMA_0;
462 timing &= ~0x8F;
463 timing |= udma_bits[speed];
464 }
465 pci_write_config_byte(pdev, drive_pci + 1, timing);
466 }
467
468 /**
469 * sis_133_set_dmamode - Initialize host controller PATA DMA timings
470 * @ap: Port whose timings we are configuring
471 * @adev: Device to program
472 *
473 * Set UDMA/MWDMA mode for device, in host controller PCI config space.
474 *
475 * LOCKING:
476 * None (inherited from caller).
477 */
478
479 static void sis_133_set_dmamode (struct ata_port *ap, struct ata_device *adev)
480 {
481 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
482 int speed = adev->dma_mode - XFER_MW_DMA_0;
483 int port = 0x40;
484 u32 t1;
485 u32 reg54;
486
487 /* bits 4- cycle time 8 - cvs time */
488 static const u32 timing_u100[] = { 0x6B0, 0x470, 0x350, 0x140, 0x120, 0x110, 0x000 };
489 static const u32 timing_u133[] = { 0x9F0, 0x6A0, 0x470, 0x250, 0x230, 0x220, 0x210 };
490
491 /* If bit 14 is set then the registers are mapped at 0x70 not 0x40 */
492 pci_read_config_dword(pdev, 0x54, &reg54);
493 if (reg54 & 0x40000000)
494 port = 0x70;
495 port += (8 * ap->port_no) + (4 * adev->devno);
496
497 pci_read_config_dword(pdev, port, &t1);
498
499 if (adev->dma_mode < XFER_UDMA_0) {
500 t1 &= ~0x00000004;
501 /* FIXME: need data sheet to add MWDMA here. Also lacking on
502 ide/pci driver */
503 } else {
504 speed = adev->dma_mode - XFER_UDMA_0;
505 /* if & 8 no UDMA133 - need info for ... */
506 t1 &= ~0x00000FF0;
507 t1 |= 0x00000004;
508 if (t1 & 0x08)
509 t1 |= timing_u133[speed];
510 else
511 t1 |= timing_u100[speed];
512 }
513 pci_write_config_dword(pdev, port, t1);
514 }
515
516 static struct scsi_host_template sis_sht = {
517 .module = THIS_MODULE,
518 .name = DRV_NAME,
519 .ioctl = ata_scsi_ioctl,
520 .queuecommand = ata_scsi_queuecmd,
521 .can_queue = ATA_DEF_QUEUE,
522 .this_id = ATA_SHT_THIS_ID,
523 .sg_tablesize = LIBATA_MAX_PRD,
524 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
525 .emulated = ATA_SHT_EMULATED,
526 .use_clustering = ATA_SHT_USE_CLUSTERING,
527 .proc_name = DRV_NAME,
528 .dma_boundary = ATA_DMA_BOUNDARY,
529 .slave_configure = ata_scsi_slave_config,
530 .slave_destroy = ata_scsi_slave_destroy,
531 .bios_param = ata_std_bios_param,
532 };
533
534 static const struct ata_port_operations sis_133_ops = {
535 .set_piomode = sis_133_set_piomode,
536 .set_dmamode = sis_133_set_dmamode,
537 .mode_filter = ata_pci_default_filter,
538
539 .tf_load = ata_tf_load,
540 .tf_read = ata_tf_read,
541 .check_status = ata_check_status,
542 .exec_command = ata_exec_command,
543 .dev_select = ata_std_dev_select,
544
545 .freeze = ata_bmdma_freeze,
546 .thaw = ata_bmdma_thaw,
547 .error_handler = sis_error_handler,
548 .post_internal_cmd = ata_bmdma_post_internal_cmd,
549 .cable_detect = sis_133_cable_detect,
550
551 .bmdma_setup = ata_bmdma_setup,
552 .bmdma_start = ata_bmdma_start,
553 .bmdma_stop = ata_bmdma_stop,
554 .bmdma_status = ata_bmdma_status,
555 .qc_prep = ata_qc_prep,
556 .qc_issue = ata_qc_issue_prot,
557 .data_xfer = ata_data_xfer,
558
559 .irq_handler = ata_interrupt,
560 .irq_clear = ata_bmdma_irq_clear,
561 .irq_on = ata_irq_on,
562
563 .port_start = ata_sff_port_start,
564 };
565
566 static const struct ata_port_operations sis_133_for_sata_ops = {
567 .set_piomode = sis_133_set_piomode,
568 .set_dmamode = sis_133_set_dmamode,
569 .mode_filter = ata_pci_default_filter,
570
571 .tf_load = ata_tf_load,
572 .tf_read = ata_tf_read,
573 .check_status = ata_check_status,
574 .exec_command = ata_exec_command,
575 .dev_select = ata_std_dev_select,
576
577 .freeze = ata_bmdma_freeze,
578 .thaw = ata_bmdma_thaw,
579 .error_handler = ata_bmdma_error_handler,
580 .post_internal_cmd = ata_bmdma_post_internal_cmd,
581 .cable_detect = sis_133_cable_detect,
582
583 .bmdma_setup = ata_bmdma_setup,
584 .bmdma_start = ata_bmdma_start,
585 .bmdma_stop = ata_bmdma_stop,
586 .bmdma_status = ata_bmdma_status,
587 .qc_prep = ata_qc_prep,
588 .qc_issue = ata_qc_issue_prot,
589 .data_xfer = ata_data_xfer,
590
591 .irq_handler = ata_interrupt,
592 .irq_clear = ata_bmdma_irq_clear,
593 .irq_on = ata_irq_on,
594
595 .port_start = ata_sff_port_start,
596 };
597
598 static const struct ata_port_operations sis_133_early_ops = {
599 .set_piomode = sis_100_set_piomode,
600 .set_dmamode = sis_133_early_set_dmamode,
601 .mode_filter = ata_pci_default_filter,
602
603 .tf_load = ata_tf_load,
604 .tf_read = ata_tf_read,
605 .check_status = ata_check_status,
606 .exec_command = ata_exec_command,
607 .dev_select = ata_std_dev_select,
608
609 .freeze = ata_bmdma_freeze,
610 .thaw = ata_bmdma_thaw,
611 .error_handler = sis_error_handler,
612 .post_internal_cmd = ata_bmdma_post_internal_cmd,
613 .cable_detect = sis_66_cable_detect,
614
615 .bmdma_setup = ata_bmdma_setup,
616 .bmdma_start = ata_bmdma_start,
617 .bmdma_stop = ata_bmdma_stop,
618 .bmdma_status = ata_bmdma_status,
619 .qc_prep = ata_qc_prep,
620 .qc_issue = ata_qc_issue_prot,
621 .data_xfer = ata_data_xfer,
622
623 .irq_handler = ata_interrupt,
624 .irq_clear = ata_bmdma_irq_clear,
625 .irq_on = ata_irq_on,
626
627 .port_start = ata_sff_port_start,
628 };
629
630 static const struct ata_port_operations sis_100_ops = {
631 .set_piomode = sis_100_set_piomode,
632 .set_dmamode = sis_100_set_dmamode,
633 .mode_filter = ata_pci_default_filter,
634
635 .tf_load = ata_tf_load,
636 .tf_read = ata_tf_read,
637 .check_status = ata_check_status,
638 .exec_command = ata_exec_command,
639 .dev_select = ata_std_dev_select,
640
641 .freeze = ata_bmdma_freeze,
642 .thaw = ata_bmdma_thaw,
643 .error_handler = sis_error_handler,
644 .post_internal_cmd = ata_bmdma_post_internal_cmd,
645 .cable_detect = sis_66_cable_detect,
646
647 .bmdma_setup = ata_bmdma_setup,
648 .bmdma_start = ata_bmdma_start,
649 .bmdma_stop = ata_bmdma_stop,
650 .bmdma_status = ata_bmdma_status,
651 .qc_prep = ata_qc_prep,
652 .qc_issue = ata_qc_issue_prot,
653 .data_xfer = ata_data_xfer,
654
655 .irq_handler = ata_interrupt,
656 .irq_clear = ata_bmdma_irq_clear,
657 .irq_on = ata_irq_on,
658
659 .port_start = ata_sff_port_start,
660 };
661
662 static const struct ata_port_operations sis_66_ops = {
663 .set_piomode = sis_old_set_piomode,
664 .set_dmamode = sis_66_set_dmamode,
665 .mode_filter = ata_pci_default_filter,
666
667 .tf_load = ata_tf_load,
668 .tf_read = ata_tf_read,
669 .check_status = ata_check_status,
670 .exec_command = ata_exec_command,
671 .dev_select = ata_std_dev_select,
672 .cable_detect = sis_66_cable_detect,
673
674 .freeze = ata_bmdma_freeze,
675 .thaw = ata_bmdma_thaw,
676 .error_handler = sis_error_handler,
677 .post_internal_cmd = ata_bmdma_post_internal_cmd,
678
679 .bmdma_setup = ata_bmdma_setup,
680 .bmdma_start = ata_bmdma_start,
681 .bmdma_stop = ata_bmdma_stop,
682 .bmdma_status = ata_bmdma_status,
683 .qc_prep = ata_qc_prep,
684 .qc_issue = ata_qc_issue_prot,
685 .data_xfer = ata_data_xfer,
686
687 .irq_handler = ata_interrupt,
688 .irq_clear = ata_bmdma_irq_clear,
689 .irq_on = ata_irq_on,
690
691 .port_start = ata_sff_port_start,
692 };
693
694 static const struct ata_port_operations sis_old_ops = {
695 .set_piomode = sis_old_set_piomode,
696 .set_dmamode = sis_old_set_dmamode,
697 .mode_filter = ata_pci_default_filter,
698
699 .tf_load = ata_tf_load,
700 .tf_read = ata_tf_read,
701 .check_status = ata_check_status,
702 .exec_command = ata_exec_command,
703 .dev_select = ata_std_dev_select,
704
705 .freeze = ata_bmdma_freeze,
706 .thaw = ata_bmdma_thaw,
707 .error_handler = sis_error_handler,
708 .post_internal_cmd = ata_bmdma_post_internal_cmd,
709 .cable_detect = ata_cable_40wire,
710
711 .bmdma_setup = ata_bmdma_setup,
712 .bmdma_start = ata_bmdma_start,
713 .bmdma_stop = ata_bmdma_stop,
714 .bmdma_status = ata_bmdma_status,
715 .qc_prep = ata_qc_prep,
716 .qc_issue = ata_qc_issue_prot,
717 .data_xfer = ata_data_xfer,
718
719 .irq_handler = ata_interrupt,
720 .irq_clear = ata_bmdma_irq_clear,
721 .irq_on = ata_irq_on,
722
723 .port_start = ata_sff_port_start,
724 };
725
726 static const struct ata_port_info sis_info = {
727 .sht = &sis_sht,
728 .flags = ATA_FLAG_SLAVE_POSS,
729 .pio_mask = 0x1f, /* pio0-4 */
730 .mwdma_mask = 0x07,
731 .udma_mask = 0,
732 .port_ops = &sis_old_ops,
733 };
734 static const struct ata_port_info sis_info33 = {
735 .sht = &sis_sht,
736 .flags = ATA_FLAG_SLAVE_POSS,
737 .pio_mask = 0x1f, /* pio0-4 */
738 .mwdma_mask = 0x07,
739 .udma_mask = ATA_UDMA2, /* UDMA 33 */
740 .port_ops = &sis_old_ops,
741 };
742 static const struct ata_port_info sis_info66 = {
743 .sht = &sis_sht,
744 .flags = ATA_FLAG_SLAVE_POSS,
745 .pio_mask = 0x1f, /* pio0-4 */
746 .udma_mask = ATA_UDMA4, /* UDMA 66 */
747 .port_ops = &sis_66_ops,
748 };
749 static const struct ata_port_info sis_info100 = {
750 .sht = &sis_sht,
751 .flags = ATA_FLAG_SLAVE_POSS,
752 .pio_mask = 0x1f, /* pio0-4 */
753 .udma_mask = ATA_UDMA5,
754 .port_ops = &sis_100_ops,
755 };
756 static const struct ata_port_info sis_info100_early = {
757 .sht = &sis_sht,
758 .flags = ATA_FLAG_SLAVE_POSS,
759 .udma_mask = ATA_UDMA5,
760 .pio_mask = 0x1f, /* pio0-4 */
761 .port_ops = &sis_66_ops,
762 };
763 static const struct ata_port_info sis_info133 = {
764 .sht = &sis_sht,
765 .flags = ATA_FLAG_SLAVE_POSS,
766 .pio_mask = 0x1f, /* pio0-4 */
767 .udma_mask = ATA_UDMA6,
768 .port_ops = &sis_133_ops,
769 };
770 const struct ata_port_info sis_info133_for_sata = {
771 .sht = &sis_sht,
772 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
773 .pio_mask = 0x1f, /* pio0-4 */
774 .udma_mask = ATA_UDMA6,
775 .port_ops = &sis_133_for_sata_ops,
776 };
777 static const struct ata_port_info sis_info133_early = {
778 .sht = &sis_sht,
779 .flags = ATA_FLAG_SLAVE_POSS,
780 .pio_mask = 0x1f, /* pio0-4 */
781 .udma_mask = ATA_UDMA6,
782 .port_ops = &sis_133_early_ops,
783 };
784
785 /* Privately shared with the SiS180 SATA driver, not for use elsewhere */
786 EXPORT_SYMBOL_GPL(sis_info133_for_sata);
787
788 static void sis_fixup(struct pci_dev *pdev, struct sis_chipset *sis)
789 {
790 u16 regw;
791 u8 reg;
792
793 if (sis->info == &sis_info133) {
794 pci_read_config_word(pdev, 0x50, &regw);
795 if (regw & 0x08)
796 pci_write_config_word(pdev, 0x50, regw & ~0x08);
797 pci_read_config_word(pdev, 0x52, &regw);
798 if (regw & 0x08)
799 pci_write_config_word(pdev, 0x52, regw & ~0x08);
800 return;
801 }
802
803 if (sis->info == &sis_info133_early || sis->info == &sis_info100) {
804 /* Fix up latency */
805 pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x80);
806 /* Set compatibility bit */
807 pci_read_config_byte(pdev, 0x49, &reg);
808 if (!(reg & 0x01))
809 pci_write_config_byte(pdev, 0x49, reg | 0x01);
810 return;
811 }
812
813 if (sis->info == &sis_info66 || sis->info == &sis_info100_early) {
814 /* Fix up latency */
815 pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x80);
816 /* Set compatibility bit */
817 pci_read_config_byte(pdev, 0x52, &reg);
818 if (!(reg & 0x04))
819 pci_write_config_byte(pdev, 0x52, reg | 0x04);
820 return;
821 }
822
823 if (sis->info == &sis_info33) {
824 pci_read_config_byte(pdev, PCI_CLASS_PROG, &reg);
825 if (( reg & 0x0F ) != 0x00)
826 pci_write_config_byte(pdev, PCI_CLASS_PROG, reg & 0xF0);
827 /* Fall through to ATA16 fixup below */
828 }
829
830 if (sis->info == &sis_info || sis->info == &sis_info33) {
831 /* force per drive recovery and active timings
832 needed on ATA_33 and below chips */
833 pci_read_config_byte(pdev, 0x52, &reg);
834 if (!(reg & 0x08))
835 pci_write_config_byte(pdev, 0x52, reg|0x08);
836 return;
837 }
838
839 BUG();
840 }
841
842 /**
843 * sis_init_one - Register SiS ATA PCI device with kernel services
844 * @pdev: PCI device to register
845 * @ent: Entry in sis_pci_tbl matching with @pdev
846 *
847 * Called from kernel PCI layer. We probe for combined mode (sigh),
848 * and then hand over control to libata, for it to do the rest.
849 *
850 * LOCKING:
851 * Inherited from PCI layer (may sleep).
852 *
853 * RETURNS:
854 * Zero on success, or -ERRNO value.
855 */
856
857 static int sis_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
858 {
859 static int printed_version;
860 struct ata_port_info port;
861 const struct ata_port_info *ppi[] = { &port, NULL };
862 struct pci_dev *host = NULL;
863 struct sis_chipset *chipset = NULL;
864 struct sis_chipset *sets;
865
866 static struct sis_chipset sis_chipsets[] = {
867
868 { 0x0968, &sis_info133 },
869 { 0x0966, &sis_info133 },
870 { 0x0965, &sis_info133 },
871 { 0x0745, &sis_info100 },
872 { 0x0735, &sis_info100 },
873 { 0x0733, &sis_info100 },
874 { 0x0635, &sis_info100 },
875 { 0x0633, &sis_info100 },
876
877 { 0x0730, &sis_info100_early }, /* 100 with ATA 66 layout */
878 { 0x0550, &sis_info100_early }, /* 100 with ATA 66 layout */
879
880 { 0x0640, &sis_info66 },
881 { 0x0630, &sis_info66 },
882 { 0x0620, &sis_info66 },
883 { 0x0540, &sis_info66 },
884 { 0x0530, &sis_info66 },
885
886 { 0x5600, &sis_info33 },
887 { 0x5598, &sis_info33 },
888 { 0x5597, &sis_info33 },
889 { 0x5591, &sis_info33 },
890 { 0x5582, &sis_info33 },
891 { 0x5581, &sis_info33 },
892
893 { 0x5596, &sis_info },
894 { 0x5571, &sis_info },
895 { 0x5517, &sis_info },
896 { 0x5511, &sis_info },
897
898 {0}
899 };
900 static struct sis_chipset sis133_early = {
901 0x0, &sis_info133_early
902 };
903 static struct sis_chipset sis133 = {
904 0x0, &sis_info133
905 };
906 static struct sis_chipset sis100_early = {
907 0x0, &sis_info100_early
908 };
909 static struct sis_chipset sis100 = {
910 0x0, &sis_info100
911 };
912
913 if (!printed_version++)
914 dev_printk(KERN_DEBUG, &pdev->dev,
915 "version " DRV_VERSION "\n");
916
917 /* We have to find the bridge first */
918
919 for (sets = &sis_chipsets[0]; sets->device; sets++) {
920 host = pci_get_device(PCI_VENDOR_ID_SI, sets->device, NULL);
921 if (host != NULL) {
922 chipset = sets; /* Match found */
923 if (sets->device == 0x630) { /* SIS630 */
924 if (host->revision >= 0x30) /* 630 ET */
925 chipset = &sis100_early;
926 }
927 break;
928 }
929 }
930
931 /* Look for concealed bridges */
932 if (chipset == NULL) {
933 /* Second check */
934 u32 idemisc;
935 u16 trueid;
936
937 /* Disable ID masking and register remapping then
938 see what the real ID is */
939
940 pci_read_config_dword(pdev, 0x54, &idemisc);
941 pci_write_config_dword(pdev, 0x54, idemisc & 0x7fffffff);
942 pci_read_config_word(pdev, PCI_DEVICE_ID, &trueid);
943 pci_write_config_dword(pdev, 0x54, idemisc);
944
945 switch(trueid) {
946 case 0x5518: /* SIS 962/963 */
947 chipset = &sis133;
948 if ((idemisc & 0x40000000) == 0) {
949 pci_write_config_dword(pdev, 0x54, idemisc | 0x40000000);
950 printk(KERN_INFO "SIS5513: Switching to 5513 register mapping\n");
951 }
952 break;
953 case 0x0180: /* SIS 965/965L */
954 chipset = &sis133;
955 break;
956 case 0x1180: /* SIS 966/966L */
957 chipset = &sis133;
958 break;
959 }
960 }
961
962 /* Further check */
963 if (chipset == NULL) {
964 struct pci_dev *lpc_bridge;
965 u16 trueid;
966 u8 prefctl;
967 u8 idecfg;
968
969 /* Try the second unmasking technique */
970 pci_read_config_byte(pdev, 0x4a, &idecfg);
971 pci_write_config_byte(pdev, 0x4a, idecfg | 0x10);
972 pci_read_config_word(pdev, PCI_DEVICE_ID, &trueid);
973 pci_write_config_byte(pdev, 0x4a, idecfg);
974
975 switch(trueid) {
976 case 0x5517:
977 lpc_bridge = pci_get_slot(pdev->bus, 0x10); /* Bus 0 Dev 2 Fn 0 */
978 if (lpc_bridge == NULL)
979 break;
980 pci_read_config_byte(pdev, 0x49, &prefctl);
981 pci_dev_put(lpc_bridge);
982
983 if (lpc_bridge->revision == 0x10 && (prefctl & 0x80)) {
984 chipset = &sis133_early;
985 break;
986 }
987 chipset = &sis100;
988 break;
989 }
990 }
991 pci_dev_put(host);
992
993 /* No chipset info, no support */
994 if (chipset == NULL)
995 return -ENODEV;
996
997 port = *chipset->info;
998 port.private_data = chipset;
999
1000 sis_fixup(pdev, chipset);
1001
1002 return ata_pci_init_one(pdev, ppi);
1003 }
1004
1005 static const struct pci_device_id sis_pci_tbl[] = {
1006 { PCI_VDEVICE(SI, 0x5513), }, /* SiS 5513 */
1007 { PCI_VDEVICE(SI, 0x5518), }, /* SiS 5518 */
1008 { PCI_VDEVICE(SI, 0x1180), }, /* SiS 1180 */
1009
1010 { }
1011 };
1012
1013 static struct pci_driver sis_pci_driver = {
1014 .name = DRV_NAME,
1015 .id_table = sis_pci_tbl,
1016 .probe = sis_init_one,
1017 .remove = ata_pci_remove_one,
1018 #ifdef CONFIG_PM
1019 .suspend = ata_pci_device_suspend,
1020 .resume = ata_pci_device_resume,
1021 #endif
1022 };
1023
1024 static int __init sis_init(void)
1025 {
1026 return pci_register_driver(&sis_pci_driver);
1027 }
1028
1029 static void __exit sis_exit(void)
1030 {
1031 pci_unregister_driver(&sis_pci_driver);
1032 }
1033
1034 module_init(sis_init);
1035 module_exit(sis_exit);
1036
1037 MODULE_AUTHOR("Alan Cox");
1038 MODULE_DESCRIPTION("SCSI low-level driver for SiS ATA");
1039 MODULE_LICENSE("GPL");
1040 MODULE_DEVICE_TABLE(pci, sis_pci_tbl);
1041 MODULE_VERSION(DRV_VERSION);
1042
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