2 * pata_sis.c - SiS ATA driver
4 * (C) 2005 Red Hat <alan@redhat.com>
5 * (C) 2007 Bartlomiej Zolnierkiewicz
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>
22 * Check MWDMA on drives that don't support MWDMA speed pio cycles ?
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>
38 #define DRV_NAME "pata_sis"
39 #define DRV_VERSION "0.5.2"
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
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 */
62 static int sis_short_ata40(struct pci_dev *dev)
64 const struct sis_laptop *lap = &sis_laptop[0];
67 if (lap->device == dev->device &&
68 lap->subvendor == dev->subsystem_vendor &&
69 lap->subdevice == dev->subsystem_device)
78 * sis_old_port_base - return PCI configuration base for dev
81 * Returns the base of the PCI configuration registers for this port
85 static int sis_old_port_base(struct ata_device *adev)
87 return 0x40 + (4 * adev->link->ap->port_no) + (2 * adev->devno);
91 * sis_133_cable_detect - check for 40/80 pin
93 * @deadline: deadline jiffies for the operation
95 * Perform cable detection for the later UDMA133 capable
99 static int sis_133_cable_detect(struct ata_port *ap)
101 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
104 /* The top bit of this register is the cable detect bit */
105 pci_read_config_word(pdev, 0x50 + 2 * ap->port_no, &tmp);
106 if ((tmp & 0x8000) && !sis_short_ata40(pdev))
107 return ATA_CBL_PATA40;
108 return ATA_CBL_PATA80;
112 * sis_66_cable_detect - check for 40/80 pin
114 * @deadline: deadline jiffies for the operation
116 * Perform cable detection on the UDMA66, UDMA100 and early UDMA133
117 * SiS IDE controllers.
120 static int sis_66_cable_detect(struct ata_port *ap)
122 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
125 /* Older chips keep cable detect in bits 4/5 of reg 0x48 */
126 pci_read_config_byte(pdev, 0x48, &tmp);
128 if ((tmp & 0x10) && !sis_short_ata40(pdev))
129 return ATA_CBL_PATA40;
130 return ATA_CBL_PATA80;
135 * sis_pre_reset - probe begin
137 * @deadline: deadline jiffies for the operation
139 * Set up cable type and use generic probe init
142 static int sis_pre_reset(struct ata_link *link, unsigned long deadline)
144 static const struct pci_bits sis_enable_bits[] = {
145 { 0x4aU, 1U, 0x02UL, 0x02UL }, /* port 0 */
146 { 0x4aU, 1U, 0x04UL, 0x04UL }, /* port 1 */
149 struct ata_port *ap = link->ap;
150 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
152 if (!pci_test_config_bits(pdev, &sis_enable_bits[ap->port_no]))
155 /* Clear the FIFO settings. We can't enable the FIFO until
156 we know we are poking at a disk */
157 pci_write_config_byte(pdev, 0x4B, 0);
158 return ata_std_prereset(link, deadline);
163 * sis_error_handler - Probe specified port on PATA host controller
167 * None (inherited from caller).
170 static void sis_error_handler(struct ata_port *ap)
172 ata_bmdma_drive_eh(ap, sis_pre_reset, ata_std_softreset, NULL, ata_std_postreset);
176 * sis_set_fifo - Set RWP fifo bits for this device
180 * SIS chipsets implement prefetch/postwrite bits for each device
181 * on both channels. This functionality is not ATAPI compatible and
182 * must be configured according to the class of device present
185 static void sis_set_fifo(struct ata_port *ap, struct ata_device *adev)
187 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
191 mask <<= (2 * ap->port_no);
192 mask <<= adev->devno;
194 /* This holds various bits including the FIFO control */
195 pci_read_config_byte(pdev, 0x4B, &fifoctrl);
198 /* Enable for ATA (disk) only */
199 if (adev->class == ATA_DEV_ATA)
201 pci_write_config_byte(pdev, 0x4B, fifoctrl);
205 * sis_old_set_piomode - Initialize host controller PATA PIO timings
206 * @ap: Port whose timings we are configuring
207 * @adev: Device we are configuring for.
209 * Set PIO mode for device, in host controller PCI config space. This
210 * function handles PIO set up for all chips that are pre ATA100 and
211 * also early ATA100 devices.
214 * None (inherited from caller).
217 static void sis_old_set_piomode (struct ata_port *ap, struct ata_device *adev)
219 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
220 int port = sis_old_port_base(adev);
222 int speed = adev->pio_mode - XFER_PIO_0;
224 const u8 active[] = { 0x00, 0x07, 0x04, 0x03, 0x01 };
225 const u8 recovery[] = { 0x00, 0x06, 0x04, 0x03, 0x03 };
227 sis_set_fifo(ap, adev);
229 pci_read_config_byte(pdev, port, &t1);
230 pci_read_config_byte(pdev, port + 1, &t2);
232 t1 &= ~0x0F; /* Clear active/recovery timings */
236 t2 |= recovery[speed];
238 pci_write_config_byte(pdev, port, t1);
239 pci_write_config_byte(pdev, port + 1, t2);
243 * sis_100_set_piomode - Initialize host controller PATA PIO timings
244 * @ap: Port whose timings we are configuring
245 * @adev: Device we are configuring for.
247 * Set PIO mode for device, in host controller PCI config space. This
248 * function handles PIO set up for ATA100 devices and early ATA133.
251 * None (inherited from caller).
254 static void sis_100_set_piomode (struct ata_port *ap, struct ata_device *adev)
256 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
257 int port = sis_old_port_base(adev);
258 int speed = adev->pio_mode - XFER_PIO_0;
260 const u8 actrec[] = { 0x00, 0x67, 0x44, 0x33, 0x31 };
262 sis_set_fifo(ap, adev);
264 pci_write_config_byte(pdev, port, actrec[speed]);
268 * sis_133_set_piomode - Initialize host controller PATA PIO timings
269 * @ap: Port whose timings we are configuring
270 * @adev: Device we are configuring for.
272 * Set PIO mode for device, in host controller PCI config space. This
273 * function handles PIO set up for the later ATA133 devices.
276 * None (inherited from caller).
279 static void sis_133_set_piomode (struct ata_port *ap, struct ata_device *adev)
281 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
285 int speed = adev->pio_mode - XFER_PIO_0;
287 const u32 timing133[] = {
288 0x28269000, /* Recovery << 24 | Act << 16 | Ini << 12 */
294 const u32 timing100[] = {
295 0x1E1C6000, /* Recovery << 24 | Act << 16 | Ini << 12 */
302 sis_set_fifo(ap, adev);
304 /* If bit 14 is set then the registers are mapped at 0x70 not 0x40 */
305 pci_read_config_dword(pdev, 0x54, ®54);
306 if (reg54 & 0x40000000)
308 port += 8 * ap->port_no + 4 * adev->devno;
310 pci_read_config_dword(pdev, port, &t1);
311 t1 &= 0xC0C00FFF; /* Mask out timing */
313 if (t1 & 0x08) /* 100 or 133 ? */
314 t1 |= timing133[speed];
316 t1 |= timing100[speed];
317 pci_write_config_byte(pdev, port, t1);
321 * sis_old_set_dmamode - Initialize host controller PATA DMA timings
322 * @ap: Port whose timings we are configuring
323 * @adev: Device to program
325 * Set UDMA/MWDMA mode for device, in host controller PCI config space.
326 * Handles pre UDMA and UDMA33 devices. Supports MWDMA as well unlike
327 * the old ide/pci driver.
330 * None (inherited from caller).
333 static void sis_old_set_dmamode (struct ata_port *ap, struct ata_device *adev)
335 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
336 int speed = adev->dma_mode - XFER_MW_DMA_0;
337 int drive_pci = sis_old_port_base(adev);
340 const u16 mwdma_bits[] = { 0x008, 0x302, 0x301 };
341 const u16 udma_bits[] = { 0xE000, 0xC000, 0xA000 };
343 pci_read_config_word(pdev, drive_pci, &timing);
345 if (adev->dma_mode < XFER_UDMA_0) {
346 /* bits 3-0 hold recovery timing bits 8-10 active timing and
347 the higer bits are dependant on the device */
349 timing |= mwdma_bits[speed];
351 /* Bit 15 is UDMA on/off, bit 13-14 are cycle time */
352 speed = adev->dma_mode - XFER_UDMA_0;
354 timing |= udma_bits[speed];
356 pci_write_config_word(pdev, drive_pci, timing);
360 * sis_66_set_dmamode - Initialize host controller PATA DMA timings
361 * @ap: Port whose timings we are configuring
362 * @adev: Device to program
364 * Set UDMA/MWDMA mode for device, in host controller PCI config space.
365 * Handles UDMA66 and early UDMA100 devices. Supports MWDMA as well unlike
366 * the old ide/pci driver.
369 * None (inherited from caller).
372 static void sis_66_set_dmamode (struct ata_port *ap, struct ata_device *adev)
374 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
375 int speed = adev->dma_mode - XFER_MW_DMA_0;
376 int drive_pci = sis_old_port_base(adev);
379 /* MWDMA 0-2 and UDMA 0-5 */
380 const u16 mwdma_bits[] = { 0x008, 0x302, 0x301 };
381 const u16 udma_bits[] = { 0xF000, 0xD000, 0xB000, 0xA000, 0x9000, 0x8000 };
383 pci_read_config_word(pdev, drive_pci, &timing);
385 if (adev->dma_mode < XFER_UDMA_0) {
386 /* bits 3-0 hold recovery timing bits 8-10 active timing and
387 the higer bits are dependant on the device, bit 15 udma */
389 timing |= mwdma_bits[speed];
391 /* Bit 15 is UDMA on/off, bit 12-14 are cycle time */
392 speed = adev->dma_mode - XFER_UDMA_0;
394 timing |= udma_bits[speed];
396 pci_write_config_word(pdev, drive_pci, timing);
400 * sis_100_set_dmamode - Initialize host controller PATA DMA timings
401 * @ap: Port whose timings we are configuring
402 * @adev: Device to program
404 * Set UDMA/MWDMA mode for device, in host controller PCI config space.
405 * Handles UDMA66 and early UDMA100 devices.
408 * None (inherited from caller).
411 static void sis_100_set_dmamode (struct ata_port *ap, struct ata_device *adev)
413 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
414 int speed = adev->dma_mode - XFER_MW_DMA_0;
415 int drive_pci = sis_old_port_base(adev);
418 const u8 udma_bits[] = { 0x8B, 0x87, 0x85, 0x83, 0x82, 0x81};
420 pci_read_config_byte(pdev, drive_pci + 1, &timing);
422 if (adev->dma_mode < XFER_UDMA_0) {
423 /* NOT SUPPORTED YET: NEED DATA SHEET. DITTO IN OLD DRIVER */
425 /* Bit 7 is UDMA on/off, bit 0-3 are cycle time */
426 speed = adev->dma_mode - XFER_UDMA_0;
428 timing |= udma_bits[speed];
430 pci_write_config_byte(pdev, drive_pci + 1, timing);
434 * sis_133_early_set_dmamode - Initialize host controller PATA DMA timings
435 * @ap: Port whose timings we are configuring
436 * @adev: Device to program
438 * Set UDMA/MWDMA mode for device, in host controller PCI config space.
439 * Handles early SiS 961 bridges.
442 * None (inherited from caller).
445 static void sis_133_early_set_dmamode (struct ata_port *ap, struct ata_device *adev)
447 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
448 int speed = adev->dma_mode - XFER_MW_DMA_0;
449 int drive_pci = sis_old_port_base(adev);
451 /* Low 4 bits are timing */
452 static const u8 udma_bits[] = { 0x8F, 0x8A, 0x87, 0x85, 0x83, 0x82, 0x81};
454 pci_read_config_byte(pdev, drive_pci + 1, &timing);
456 if (adev->dma_mode < XFER_UDMA_0) {
457 /* NOT SUPPORTED YET: NEED DATA SHEET. DITTO IN OLD DRIVER */
459 /* Bit 7 is UDMA on/off, bit 0-3 are cycle time */
460 speed = adev->dma_mode - XFER_UDMA_0;
462 timing |= udma_bits[speed];
464 pci_write_config_byte(pdev, drive_pci + 1, timing);
468 * sis_133_set_dmamode - Initialize host controller PATA DMA timings
469 * @ap: Port whose timings we are configuring
470 * @adev: Device to program
472 * Set UDMA/MWDMA mode for device, in host controller PCI config space.
475 * None (inherited from caller).
478 static void sis_133_set_dmamode (struct ata_port *ap, struct ata_device *adev)
480 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
481 int speed = adev->dma_mode - XFER_MW_DMA_0;
486 /* bits 4- cycle time 8 - cvs time */
487 static const u32 timing_u100[] = { 0x6B0, 0x470, 0x350, 0x140, 0x120, 0x110, 0x000 };
488 static const u32 timing_u133[] = { 0x9F0, 0x6A0, 0x470, 0x250, 0x230, 0x220, 0x210 };
490 /* If bit 14 is set then the registers are mapped at 0x70 not 0x40 */
491 pci_read_config_dword(pdev, 0x54, ®54);
492 if (reg54 & 0x40000000)
494 port += (8 * ap->port_no) + (4 * adev->devno);
496 pci_read_config_dword(pdev, port, &t1);
498 if (adev->dma_mode < XFER_UDMA_0) {
500 /* FIXME: need data sheet to add MWDMA here. Also lacking on
503 speed = adev->dma_mode - XFER_UDMA_0;
504 /* if & 8 no UDMA133 - need info for ... */
508 t1 |= timing_u133[speed];
510 t1 |= timing_u100[speed];
512 pci_write_config_dword(pdev, port, t1);
515 static struct scsi_host_template sis_sht = {
516 .module = THIS_MODULE,
518 .ioctl = ata_scsi_ioctl,
519 .queuecommand = ata_scsi_queuecmd,
520 .can_queue = ATA_DEF_QUEUE,
521 .this_id = ATA_SHT_THIS_ID,
522 .sg_tablesize = LIBATA_MAX_PRD,
523 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
524 .emulated = ATA_SHT_EMULATED,
525 .use_clustering = ATA_SHT_USE_CLUSTERING,
526 .proc_name = DRV_NAME,
527 .dma_boundary = ATA_DMA_BOUNDARY,
528 .slave_configure = ata_scsi_slave_config,
529 .slave_destroy = ata_scsi_slave_destroy,
530 .bios_param = ata_std_bios_param,
533 static const struct ata_port_operations sis_133_ops = {
534 .port_disable = ata_port_disable,
535 .set_piomode = sis_133_set_piomode,
536 .set_dmamode = sis_133_set_dmamode,
537 .mode_filter = ata_pci_default_filter,
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,
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,
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,
559 .irq_handler = ata_interrupt,
560 .irq_clear = ata_bmdma_irq_clear,
561 .irq_on = ata_irq_on,
563 .port_start = ata_port_start,
566 static const struct ata_port_operations sis_133_for_sata_ops = {
567 .port_disable = ata_port_disable,
568 .set_piomode = sis_133_set_piomode,
569 .set_dmamode = sis_133_set_dmamode,
570 .mode_filter = ata_pci_default_filter,
572 .tf_load = ata_tf_load,
573 .tf_read = ata_tf_read,
574 .check_status = ata_check_status,
575 .exec_command = ata_exec_command,
576 .dev_select = ata_std_dev_select,
578 .freeze = ata_bmdma_freeze,
579 .thaw = ata_bmdma_thaw,
580 .error_handler = ata_bmdma_error_handler,
581 .post_internal_cmd = ata_bmdma_post_internal_cmd,
582 .cable_detect = sis_133_cable_detect,
584 .bmdma_setup = ata_bmdma_setup,
585 .bmdma_start = ata_bmdma_start,
586 .bmdma_stop = ata_bmdma_stop,
587 .bmdma_status = ata_bmdma_status,
588 .qc_prep = ata_qc_prep,
589 .qc_issue = ata_qc_issue_prot,
590 .data_xfer = ata_data_xfer,
592 .irq_handler = ata_interrupt,
593 .irq_clear = ata_bmdma_irq_clear,
594 .irq_on = ata_irq_on,
596 .port_start = ata_port_start,
599 static const struct ata_port_operations sis_133_early_ops = {
600 .port_disable = ata_port_disable,
601 .set_piomode = sis_100_set_piomode,
602 .set_dmamode = sis_133_early_set_dmamode,
603 .mode_filter = ata_pci_default_filter,
605 .tf_load = ata_tf_load,
606 .tf_read = ata_tf_read,
607 .check_status = ata_check_status,
608 .exec_command = ata_exec_command,
609 .dev_select = ata_std_dev_select,
611 .freeze = ata_bmdma_freeze,
612 .thaw = ata_bmdma_thaw,
613 .error_handler = sis_error_handler,
614 .post_internal_cmd = ata_bmdma_post_internal_cmd,
615 .cable_detect = sis_66_cable_detect,
617 .bmdma_setup = ata_bmdma_setup,
618 .bmdma_start = ata_bmdma_start,
619 .bmdma_stop = ata_bmdma_stop,
620 .bmdma_status = ata_bmdma_status,
621 .qc_prep = ata_qc_prep,
622 .qc_issue = ata_qc_issue_prot,
623 .data_xfer = ata_data_xfer,
625 .irq_handler = ata_interrupt,
626 .irq_clear = ata_bmdma_irq_clear,
627 .irq_on = ata_irq_on,
629 .port_start = ata_port_start,
632 static const struct ata_port_operations sis_100_ops = {
633 .port_disable = ata_port_disable,
634 .set_piomode = sis_100_set_piomode,
635 .set_dmamode = sis_100_set_dmamode,
636 .mode_filter = ata_pci_default_filter,
638 .tf_load = ata_tf_load,
639 .tf_read = ata_tf_read,
640 .check_status = ata_check_status,
641 .exec_command = ata_exec_command,
642 .dev_select = ata_std_dev_select,
644 .freeze = ata_bmdma_freeze,
645 .thaw = ata_bmdma_thaw,
646 .error_handler = sis_error_handler,
647 .post_internal_cmd = ata_bmdma_post_internal_cmd,
648 .cable_detect = sis_66_cable_detect,
650 .bmdma_setup = ata_bmdma_setup,
651 .bmdma_start = ata_bmdma_start,
652 .bmdma_stop = ata_bmdma_stop,
653 .bmdma_status = ata_bmdma_status,
654 .qc_prep = ata_qc_prep,
655 .qc_issue = ata_qc_issue_prot,
656 .data_xfer = ata_data_xfer,
658 .irq_handler = ata_interrupt,
659 .irq_clear = ata_bmdma_irq_clear,
660 .irq_on = ata_irq_on,
662 .port_start = ata_port_start,
665 static const struct ata_port_operations sis_66_ops = {
666 .port_disable = ata_port_disable,
667 .set_piomode = sis_old_set_piomode,
668 .set_dmamode = sis_66_set_dmamode,
669 .mode_filter = ata_pci_default_filter,
671 .tf_load = ata_tf_load,
672 .tf_read = ata_tf_read,
673 .check_status = ata_check_status,
674 .exec_command = ata_exec_command,
675 .dev_select = ata_std_dev_select,
676 .cable_detect = sis_66_cable_detect,
678 .freeze = ata_bmdma_freeze,
679 .thaw = ata_bmdma_thaw,
680 .error_handler = sis_error_handler,
681 .post_internal_cmd = ata_bmdma_post_internal_cmd,
683 .bmdma_setup = ata_bmdma_setup,
684 .bmdma_start = ata_bmdma_start,
685 .bmdma_stop = ata_bmdma_stop,
686 .bmdma_status = ata_bmdma_status,
687 .qc_prep = ata_qc_prep,
688 .qc_issue = ata_qc_issue_prot,
689 .data_xfer = ata_data_xfer,
691 .irq_handler = ata_interrupt,
692 .irq_clear = ata_bmdma_irq_clear,
693 .irq_on = ata_irq_on,
695 .port_start = ata_port_start,
698 static const struct ata_port_operations sis_old_ops = {
699 .port_disable = ata_port_disable,
700 .set_piomode = sis_old_set_piomode,
701 .set_dmamode = sis_old_set_dmamode,
702 .mode_filter = ata_pci_default_filter,
704 .tf_load = ata_tf_load,
705 .tf_read = ata_tf_read,
706 .check_status = ata_check_status,
707 .exec_command = ata_exec_command,
708 .dev_select = ata_std_dev_select,
710 .freeze = ata_bmdma_freeze,
711 .thaw = ata_bmdma_thaw,
712 .error_handler = sis_error_handler,
713 .post_internal_cmd = ata_bmdma_post_internal_cmd,
714 .cable_detect = ata_cable_40wire,
716 .bmdma_setup = ata_bmdma_setup,
717 .bmdma_start = ata_bmdma_start,
718 .bmdma_stop = ata_bmdma_stop,
719 .bmdma_status = ata_bmdma_status,
720 .qc_prep = ata_qc_prep,
721 .qc_issue = ata_qc_issue_prot,
722 .data_xfer = ata_data_xfer,
724 .irq_handler = ata_interrupt,
725 .irq_clear = ata_bmdma_irq_clear,
726 .irq_on = ata_irq_on,
728 .port_start = ata_port_start,
731 static const struct ata_port_info sis_info = {
733 .flags = ATA_FLAG_SLAVE_POSS,
734 .pio_mask = 0x1f, /* pio0-4 */
737 .port_ops = &sis_old_ops,
739 static const struct ata_port_info sis_info33 = {
741 .flags = ATA_FLAG_SLAVE_POSS,
742 .pio_mask = 0x1f, /* pio0-4 */
744 .udma_mask = ATA_UDMA2, /* UDMA 33 */
745 .port_ops = &sis_old_ops,
747 static const struct ata_port_info sis_info66 = {
749 .flags = ATA_FLAG_SLAVE_POSS,
750 .pio_mask = 0x1f, /* pio0-4 */
751 .udma_mask = ATA_UDMA4, /* UDMA 66 */
752 .port_ops = &sis_66_ops,
754 static const struct ata_port_info sis_info100 = {
756 .flags = ATA_FLAG_SLAVE_POSS,
757 .pio_mask = 0x1f, /* pio0-4 */
758 .udma_mask = ATA_UDMA5,
759 .port_ops = &sis_100_ops,
761 static const struct ata_port_info sis_info100_early = {
763 .flags = ATA_FLAG_SLAVE_POSS,
764 .udma_mask = ATA_UDMA5,
765 .pio_mask = 0x1f, /* pio0-4 */
766 .port_ops = &sis_66_ops,
768 static const struct ata_port_info sis_info133 = {
770 .flags = ATA_FLAG_SLAVE_POSS,
771 .pio_mask = 0x1f, /* pio0-4 */
772 .udma_mask = ATA_UDMA6,
773 .port_ops = &sis_133_ops,
775 const struct ata_port_info sis_info133_for_sata = {
777 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
778 .pio_mask = 0x1f, /* pio0-4 */
779 .udma_mask = ATA_UDMA6,
780 .port_ops = &sis_133_for_sata_ops,
782 static const struct ata_port_info sis_info133_early = {
784 .flags = ATA_FLAG_SLAVE_POSS,
785 .pio_mask = 0x1f, /* pio0-4 */
786 .udma_mask = ATA_UDMA6,
787 .port_ops = &sis_133_early_ops,
790 /* Privately shared with the SiS180 SATA driver, not for use elsewhere */
791 EXPORT_SYMBOL_GPL(sis_info133_for_sata);
793 static void sis_fixup(struct pci_dev *pdev, struct sis_chipset *sis)
798 if (sis->info == &sis_info133) {
799 pci_read_config_word(pdev, 0x50, ®w);
801 pci_write_config_word(pdev, 0x50, regw & ~0x08);
802 pci_read_config_word(pdev, 0x52, ®w);
804 pci_write_config_word(pdev, 0x52, regw & ~0x08);
808 if (sis->info == &sis_info133_early || sis->info == &sis_info100) {
810 pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x80);
811 /* Set compatibility bit */
812 pci_read_config_byte(pdev, 0x49, ®);
814 pci_write_config_byte(pdev, 0x49, reg | 0x01);
818 if (sis->info == &sis_info66 || sis->info == &sis_info100_early) {
820 pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x80);
821 /* Set compatibility bit */
822 pci_read_config_byte(pdev, 0x52, ®);
824 pci_write_config_byte(pdev, 0x52, reg | 0x04);
828 if (sis->info == &sis_info33) {
829 pci_read_config_byte(pdev, PCI_CLASS_PROG, ®);
830 if (( reg & 0x0F ) != 0x00)
831 pci_write_config_byte(pdev, PCI_CLASS_PROG, reg & 0xF0);
832 /* Fall through to ATA16 fixup below */
835 if (sis->info == &sis_info || sis->info == &sis_info33) {
836 /* force per drive recovery and active timings
837 needed on ATA_33 and below chips */
838 pci_read_config_byte(pdev, 0x52, ®);
840 pci_write_config_byte(pdev, 0x52, reg|0x08);
848 * sis_init_one - Register SiS ATA PCI device with kernel services
849 * @pdev: PCI device to register
850 * @ent: Entry in sis_pci_tbl matching with @pdev
852 * Called from kernel PCI layer. We probe for combined mode (sigh),
853 * and then hand over control to libata, for it to do the rest.
856 * Inherited from PCI layer (may sleep).
859 * Zero on success, or -ERRNO value.
862 static int sis_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
864 static int printed_version;
865 struct ata_port_info port;
866 const struct ata_port_info *ppi[] = { &port, NULL };
867 struct pci_dev *host = NULL;
868 struct sis_chipset *chipset = NULL;
869 struct sis_chipset *sets;
871 static struct sis_chipset sis_chipsets[] = {
873 { 0x0968, &sis_info133 },
874 { 0x0966, &sis_info133 },
875 { 0x0965, &sis_info133 },
876 { 0x0745, &sis_info100 },
877 { 0x0735, &sis_info100 },
878 { 0x0733, &sis_info100 },
879 { 0x0635, &sis_info100 },
880 { 0x0633, &sis_info100 },
882 { 0x0730, &sis_info100_early }, /* 100 with ATA 66 layout */
883 { 0x0550, &sis_info100_early }, /* 100 with ATA 66 layout */
885 { 0x0640, &sis_info66 },
886 { 0x0630, &sis_info66 },
887 { 0x0620, &sis_info66 },
888 { 0x0540, &sis_info66 },
889 { 0x0530, &sis_info66 },
891 { 0x5600, &sis_info33 },
892 { 0x5598, &sis_info33 },
893 { 0x5597, &sis_info33 },
894 { 0x5591, &sis_info33 },
895 { 0x5582, &sis_info33 },
896 { 0x5581, &sis_info33 },
898 { 0x5596, &sis_info },
899 { 0x5571, &sis_info },
900 { 0x5517, &sis_info },
901 { 0x5511, &sis_info },
905 static struct sis_chipset sis133_early = {
906 0x0, &sis_info133_early
908 static struct sis_chipset sis133 = {
911 static struct sis_chipset sis100_early = {
912 0x0, &sis_info100_early
914 static struct sis_chipset sis100 = {
918 if (!printed_version++)
919 dev_printk(KERN_DEBUG, &pdev->dev,
920 "version " DRV_VERSION "\n");
922 /* We have to find the bridge first */
924 for (sets = &sis_chipsets[0]; sets->device; sets++) {
925 host = pci_get_device(PCI_VENDOR_ID_SI, sets->device, NULL);
927 chipset = sets; /* Match found */
928 if (sets->device == 0x630) { /* SIS630 */
929 if (host->revision >= 0x30) /* 630 ET */
930 chipset = &sis100_early;
936 /* Look for concealed bridges */
937 if (chipset == NULL) {
942 /* Disable ID masking and register remapping then
943 see what the real ID is */
945 pci_read_config_dword(pdev, 0x54, &idemisc);
946 pci_write_config_dword(pdev, 0x54, idemisc & 0x7fffffff);
947 pci_read_config_word(pdev, PCI_DEVICE_ID, &trueid);
948 pci_write_config_dword(pdev, 0x54, idemisc);
951 case 0x5518: /* SIS 962/963 */
953 if ((idemisc & 0x40000000) == 0) {
954 pci_write_config_dword(pdev, 0x54, idemisc | 0x40000000);
955 printk(KERN_INFO "SIS5513: Switching to 5513 register mapping\n");
958 case 0x0180: /* SIS 965/965L */
961 case 0x1180: /* SIS 966/966L */
968 if (chipset == NULL) {
969 struct pci_dev *lpc_bridge;
974 /* Try the second unmasking technique */
975 pci_read_config_byte(pdev, 0x4a, &idecfg);
976 pci_write_config_byte(pdev, 0x4a, idecfg | 0x10);
977 pci_read_config_word(pdev, PCI_DEVICE_ID, &trueid);
978 pci_write_config_byte(pdev, 0x4a, idecfg);
982 lpc_bridge = pci_get_slot(pdev->bus, 0x10); /* Bus 0 Dev 2 Fn 0 */
983 if (lpc_bridge == NULL)
985 pci_read_config_byte(pdev, 0x49, &prefctl);
986 pci_dev_put(lpc_bridge);
988 if (lpc_bridge->revision == 0x10 && (prefctl & 0x80)) {
989 chipset = &sis133_early;
998 /* No chipset info, no support */
1002 port = *chipset->info;
1003 port.private_data = chipset;
1005 sis_fixup(pdev, chipset);
1007 return ata_pci_init_one(pdev, ppi);
1010 static const struct pci_device_id sis_pci_tbl[] = {
1011 { PCI_VDEVICE(SI, 0x5513), }, /* SiS 5513 */
1012 { PCI_VDEVICE(SI, 0x5518), }, /* SiS 5518 */
1013 { PCI_VDEVICE(SI, 0x1180), }, /* SiS 1180 */
1018 static struct pci_driver sis_pci_driver = {
1020 .id_table = sis_pci_tbl,
1021 .probe = sis_init_one,
1022 .remove = ata_pci_remove_one,
1024 .suspend = ata_pci_device_suspend,
1025 .resume = ata_pci_device_resume,
1029 static int __init sis_init(void)
1031 return pci_register_driver(&sis_pci_driver);
1034 static void __exit sis_exit(void)
1036 pci_unregister_driver(&sis_pci_driver);
1039 module_init(sis_init);
1040 module_exit(sis_exit);
1042 MODULE_AUTHOR("Alan Cox");
1043 MODULE_DESCRIPTION("SCSI low-level driver for SiS ATA");
1044 MODULE_LICENSE("GPL");
1045 MODULE_DEVICE_TABLE(pci, sis_pci_tbl);
1046 MODULE_VERSION(DRV_VERSION);