1 // SPDX-License-Identifier: GPL-2.0-only
3  *    pata_sis.c - SiS ATA driver
9  * Copyright (C) 1999-2000	Andre Hedrick <andre@linux-ide.org>
67 	while (lap->device) {  in sis_short_ata40()
68 		if (lap->device == dev->device &&  in sis_short_ata40()
69 		    lap->subvendor == dev->subsystem_vendor &&  in sis_short_ata40()
70 		    lap->subdevice == dev->subsystem_device)  in sis_short_ata40()
79  *	sis_old_port_base - return PCI configuration base for dev
88 	return 0x40 + (4 * adev->link->ap->port_no) + (2 * adev->devno);  in sis_old_port_base()
92  *	sis_port_base - return PCI configuration base for dev
101 	struct ata_port *ap = adev->link->ap;  in sis_port_base()
102 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in sis_port_base()
111 	return port + (8 * ap->port_no) + (4 * adev->devno);  in sis_port_base()
115  *	sis_133_cable_detect - check for 40/80 pin
124 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in sis_133_cable_detect()
128 	pci_read_config_word(pdev, 0x50 + 2 * ap->port_no, &tmp);  in sis_133_cable_detect()
135  *	sis_66_cable_detect - check for 40/80 pin
144 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in sis_66_cable_detect()
149 	tmp >>= ap->port_no;  in sis_66_cable_detect()
157  *	sis_pre_reset - probe begin
171 	struct ata_port *ap = link->ap;  in sis_pre_reset()
172 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in sis_pre_reset()
174 	if (!pci_test_config_bits(pdev, &sis_enable_bits[ap->port_no]))  in sis_pre_reset()
175 		return -ENOENT;  in sis_pre_reset()
185  *	sis_set_fifo - Set RWP fifo bits for this device
196 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in sis_set_fifo()
200 	mask <<= (2 * ap->port_no);  in sis_set_fifo()
201 	mask <<= adev->devno;  in sis_set_fifo()
208 	if (adev->class == ATA_DEV_ATA)  in sis_set_fifo()
214  *	sis_old_set_piomode - Initialize host controller PATA PIO timings
218  *	Set PIO mode for device, in host controller PCI config space. This
228 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in sis_old_set_piomode()
231 	int speed = adev->pio_mode - XFER_PIO_0;  in sis_old_set_piomode()
234 	static const u8 recovery[] = { 0x00, 0x06, 0x04, 0x03, 0x03 };  in sis_old_set_piomode()  local
241 	t1 &= ~0x0F;	/* Clear active/recovery timings */  in sis_old_set_piomode()
245 	t2 |= recovery[speed];  in sis_old_set_piomode()
252  *	sis_100_set_piomode - Initialize host controller PATA PIO timings
256  *	Set PIO mode for device, in host controller PCI config space. This
265 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in sis_100_set_piomode()
267 	int speed = adev->pio_mode - XFER_PIO_0;  in sis_100_set_piomode()
277  *	sis_133_set_piomode - Initialize host controller PATA PIO timings
281  *	Set PIO mode for device, in host controller PCI config space. This
290 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in sis_133_set_piomode()
293 	int speed = adev->pio_mode - XFER_PIO_0;  in sis_133_set_piomode()
296 		0x28269000,	/* Recovery << 24 | Act << 16 | Ini << 12 */  in sis_133_set_piomode()
303 		0x1E1C6000,	/* Recovery << 24 | Act << 16 | Ini << 12 */  in sis_133_set_piomode()
324  *	sis_old_set_dmamode - Initialize host controller PATA DMA timings
328  *	Set UDMA/MWDMA mode for device, in host controller PCI config space.
338 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in sis_old_set_dmamode()
339 	int speed = adev->dma_mode - XFER_MW_DMA_0;  in sis_old_set_dmamode()
348 	if (adev->dma_mode < XFER_UDMA_0) {  in sis_old_set_dmamode()
349 		/* bits 3-0 hold recovery timing bits 8-10 active timing and  in sis_old_set_dmamode()
354 		/* Bit 15 is UDMA on/off, bit 13-14 are cycle time */  in sis_old_set_dmamode()
355 		speed = adev->dma_mode - XFER_UDMA_0;  in sis_old_set_dmamode()
363  *	sis_66_set_dmamode - Initialize host controller PATA DMA timings
367  *	Set UDMA/MWDMA mode for device, in host controller PCI config space.
377 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in sis_66_set_dmamode()
378 	int speed = adev->dma_mode - XFER_MW_DMA_0;  in sis_66_set_dmamode()
382 	/* MWDMA 0-2 and UDMA 0-5 */  in sis_66_set_dmamode()
388 	if (adev->dma_mode < XFER_UDMA_0) {  in sis_66_set_dmamode()
389 		/* bits 3-0 hold recovery timing bits 8-10 active timing and  in sis_66_set_dmamode()
394 		/* Bit 15 is UDMA on/off, bit 12-14 are cycle time */  in sis_66_set_dmamode()
395 		speed = adev->dma_mode - XFER_UDMA_0;  in sis_66_set_dmamode()
403  *	sis_100_set_dmamode - Initialize host controller PATA DMA timings
407  *	Set UDMA/MWDMA mode for device, in host controller PCI config space.
416 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in sis_100_set_dmamode()
417 	int speed = adev->dma_mode - XFER_MW_DMA_0;  in sis_100_set_dmamode()
425 	if (adev->dma_mode < XFER_UDMA_0) {  in sis_100_set_dmamode()
428 		/* Bit 7 is UDMA on/off, bit 0-3 are cycle time */  in sis_100_set_dmamode()
429 		speed = adev->dma_mode - XFER_UDMA_0;  in sis_100_set_dmamode()
437  *	sis_133_early_set_dmamode - Initialize host controller PATA DMA timings
441  *	Set UDMA/MWDMA mode for device, in host controller PCI config space.
450 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in sis_133_early_set_dmamode()
451 	int speed = adev->dma_mode - XFER_MW_DMA_0;  in sis_133_early_set_dmamode()
459 	if (adev->dma_mode < XFER_UDMA_0) {  in sis_133_early_set_dmamode()
462 		/* Bit 7 is UDMA on/off, bit 0-3 are cycle time */  in sis_133_early_set_dmamode()
463 		speed = adev->dma_mode - XFER_UDMA_0;  in sis_133_early_set_dmamode()
471  *	sis_133_set_dmamode - Initialize host controller PATA DMA timings
475  *	Set UDMA/MWDMA mode for device, in host controller PCI config space.
483 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in sis_133_set_dmamode()
490 	if (adev->dma_mode < XFER_UDMA_0) {  in sis_133_set_dmamode()
491 		/* Recovery << 24 | Act << 16 | Ini << 12, like PIO modes */  in sis_133_set_dmamode()
494 		int speed = adev->dma_mode - XFER_MW_DMA_0;  in sis_133_set_dmamode()
504 		/* bits 4- cycle time 8 - cvs time */  in sis_133_set_dmamode()
507 		int speed = adev->dma_mode - XFER_UDMA_0;  in sis_133_set_dmamode()
521  *	sis_133_mode_filter - mode selection filter
530 	struct ata_port *ap = adev->link->ap;  in sis_133_mode_filter()
531 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in sis_133_mode_filter()
659 	if (sis->info == &sis_info133) {  in sis_fixup()
669 	if (sis->info == &sis_info133_early || sis->info == &sis_info100) {  in sis_fixup()
679 	if (sis->info == &sis_info66 || sis->info == &sis_info100_early) {  in sis_fixup()
689 	if (sis->info == &sis_info33) {  in sis_fixup()
696 	if (sis->info == &sis_info || sis->info == &sis_info33) {  in sis_fixup()
697 		/* force per drive recovery and active timings  in sis_fixup()
709  *	sis_init_one - Register SiS ATA PCI device with kernel services
713  *	Called from kernel PCI layer. We probe for combined mode (sigh),
720  *	Zero on success, or -ERRNO value.
778 	ata_print_version_once(&pdev->dev, DRV_VERSION);  in sis_init_one()
785 	for (sets = &sis_chipsets[0]; sets->device; sets++) {  in sis_init_one()
786 		host = pci_get_device(PCI_VENDOR_ID_SI, sets->device, NULL);  in sis_init_one()
789 			if (sets->device == 0x630) {	/* SIS630 */  in sis_init_one()
790 				if (host->revision >= 0x30)	/* 630 ET */  in sis_init_one()
813 			dev_info(&pdev->dev,  in sis_init_one()
818 				dev_info(&pdev->dev,  in sis_init_one()
846 			lpc_bridge = pci_get_slot(pdev->bus, 0x10); /* Bus 0 Dev 2 Fn 0 */  in sis_init_one()
852 			if (lpc_bridge->revision == 0x10 && (prefctl & 0x80)) {  in sis_init_one()
864 		return -ENODEV;  in sis_init_one()
866 	ppi[0] = chipset->info;  in sis_init_one()
883 	sis_fixup(pdev, host->private_data);  in sis_reinit_one()
912 MODULE_DESCRIPTION("SCSI low-level driver for SiS ATA");