1 // SPDX-License-Identifier: GPL-2.0-or-later
3  *    ata_piix.c - Intel PATA/SATA controllers
6  *    		    Please ALWAYS copy linux-ide@vger.kernel.org
9  *	Copyright 2003-2005 Red Hat Inc
10  *	Copyright 2003-2005 Jeff Garzik
14  *  Copyright (C) 1998-1999 Andrzej Krzysztofowicz, Author and Maintainer
15  *  Copyright (C) 1998-2000 Andre Hedrick <andre@linux-ide.org>
19  *  as Documentation/driver-api/libata.rst
40  *	PIIX4    errata #9	- Only on ultra obscure hw
41  *	ICH3	 errata #13     - Not observed to affect real hw
45  *	PIIX4	errata #10	- BM IDE hang with non UDMA
47  *	440MX   errata #15	- As PIIX4 errata #10
48  *	PIIX4	errata #15	- Must not read control registers
50  *	440MX   errata #13	- As PIIX4 errata #15
51  *	ICH2	errata #21	- DMA mode 0 doesn't work right
52  *	ICH0/1  errata #55	- As ICH2 errata #21
53  *	ICH2	spec c #9	- Extra operations needed to handle
55  *	ICH2    spec c #20	- IDE PRD must not cross a 64K boundary
57  *	ICH2    spec c #24	- UDMA mode 4,5 t85/86 should be 6ns not 3.3
58  *	ICH7	errata #16	- MWDMA1 timings are incorrect
61  *	450NX:	errata #19	- DMA hangs on old 450NX
62  *	450NX:  errata #20	- DMA hangs on old 450NX
63  *	450NX:  errata #25	- Corruption with DMA on old 450NX
64  *	ICH3    errata #15      - IDE deadlock under high load
66  *	ICH3	errata #18	- Don't use native mode
110 	IDE			= -1, /* IDE */
111 	NA			= -2, /* not available */
112 	RV			= -3, /* reserved */
116 	/* host->flags bits */
124 	ich_pata_33,		/* ICH up to UDMA 33 only */
126 	ich_pata_100,		/* ICH up to UDMA 100 */
127 	ich_pata_100_nomwdma1,	/* ICH up to UDMA 100 but with no MWDMA1*/
160 	/* Intel PIIX4 for the 430TX/440BX/MX chipset: UDMA 33 */
169 	/* Intel ICH (i810, i815, i840) UDMA 66*/
171 	/* Intel ICH0 : UDMA 33*/
175 	/* Intel ICH2 (i810E2, i845, 850, 860) UDMA 100 */
179 	/* Intel ICH3 (E7500/1) UDMA 100 */
181 	/* Intel ICH4-L */
183 	/* Intel ICH4 (i845GV, i845E, i852, i855) UDMA 100 */
188 	/* C-ICH (i810E2) */
190 	/* ESB (855GME/875P + 6300ESB) UDMA 100  */
192 	/* ICH6 (and 6) (i915) UDMA 100 */
194 	/* ICH7/7-R (i945, i975) UDMA 100*/
296 	/* SATA Controller IDE (Lynx Point-LP) */
298 	/* SATA Controller IDE (Lynx Point-LP) */
300 	/* SATA Controller IDE (Lynx Point-LP) */
302 	/* SATA Controller IDE (Lynx Point-LP) */
451 MODULE_DESCRIPTION("SCSI low-level driver for Intel PIIX/ICH ATA controllers");
475 	{ 0x27DF, 0x1071, 0xD221 },	/* ICH7 on Hercules EC-900 */
479 	{ 0x24CA, 0x10CF, 0x11AB },	/* ICH4M on Fujitsu-Siemens Lifebook S6120 */
482 	{ 0x27df, 0x104d, 0x900e },	/* ICH7 on Sony TZ-90 */
489 	if (!(ap->flags & PIIX_FLAG_PIO16))  in piix_port_start()
490 		ap->pflags |= ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE;  in piix_port_start()
496  *	ich_pata_cable_detect - Probe host controller cable detect info
508 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in ich_pata_cable_detect()
509 	struct piix_host_priv *hpriv = ap->host->private_data;  in ich_pata_cable_detect()
514 	while (lap->device) {  in ich_pata_cable_detect()
515 		if (lap->device == pdev->device &&  in ich_pata_cable_detect()
516 		    lap->subvendor == pdev->subsystem_vendor &&  in ich_pata_cable_detect()
517 		    lap->subdevice == pdev->subsystem_device)  in ich_pata_cable_detect()
524 	mask = ap->port_no == 0 ? PIIX_80C_PRI : PIIX_80C_SEC;  in ich_pata_cable_detect()
525 	if ((hpriv->saved_iocfg & mask) == 0)  in ich_pata_cable_detect()
531  *	piix_pata_prereset - prereset for PATA host controller
540 	struct ata_port *ap = link->ap;  in piix_pata_prereset()
541 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in piix_pata_prereset()
543 	if (!pci_test_config_bits(pdev, &piix_enable_bits[ap->port_no]))  in piix_pata_prereset()
544 		return -ENOENT;  in piix_pata_prereset()
553 	struct pci_dev *dev	= to_pci_dev(ap->host->dev);  in piix_set_timings()
555 	unsigned int is_slave	= (adev->devno != 0);  in piix_set_timings()
556 	unsigned int master_port= ap->port_no ? 0x42 : 0x40;  in piix_set_timings()
564 	 *	See Intel Document 298600-004 for the timing programing rules  in piix_set_timings()
580 	if (adev->class == ATA_DEV_ATA)  in piix_set_timings()
586 	if (adev->pio_mode < XFER_PIO_0 + pio)  in piix_set_timings()
603 		slave_data &= (ap->port_no ? 0x0f : 0xf0);  in piix_set_timings()
606 						<< (ap->port_no ? 4 : 0);  in piix_set_timings()
624 	/* Ensure the UDMA bit is off - it will be turned back on if  in piix_set_timings()
625 	   UDMA is selected */  in piix_set_timings()
627 	if (ap->udma_mask) {  in piix_set_timings()
629 		udma_enable &= ~(1 << (2 * ap->port_no + adev->devno));  in piix_set_timings()
637  *	piix_set_piomode - Initialize host controller PATA PIO timings
649 	piix_set_timings(ap, adev, adev->pio_mode - XFER_PIO_0);  in piix_set_piomode()
653  *	do_pata_set_dmamode - Initialize host controller PATA PIO timings
658  *	Set UDMA mode for device, in host controller PCI config space.
666 	struct pci_dev *dev	= to_pci_dev(ap->host->dev);  in do_pata_set_dmamode()
668 	u8 speed		= adev->dma_mode;  in do_pata_set_dmamode()
669 	int devid		= adev->devno + 2 * ap->port_no;  in do_pata_set_dmamode()
673 		unsigned int udma = speed - XFER_UDMA_0;  in do_pata_set_dmamode()  local
683 		 * UDMA is handled by a combination of clock switching and  in do_pata_set_dmamode()
689 		u_speed = min(2 - (udma & 1), udma);  in do_pata_set_dmamode()
690 		if (udma == 5)  in do_pata_set_dmamode()
692 		else if (udma > 2)  in do_pata_set_dmamode()
720 		unsigned int mwdma = speed - XFER_MW_DMA_0;  in do_pata_set_dmamode()
724 		int pio = needed_pio[mwdma] - XFER_PIO_0;  in do_pata_set_dmamode()
732  *	piix_set_dmamode - Initialize host controller PATA DMA timings
736  *	Set MW/UDMA mode for device, in host controller PCI config space.
748  *	ich_set_dmamode - Initialize host controller PATA DMA timings
752  *	Set MW/UDMA mode for device, in host controller PCI config space.
779 	struct ata_port *ap = link->ap;  in piix_sidpr_sel()
780 	struct piix_host_priv *hpriv = ap->host->private_data;  in piix_sidpr_sel()
782 	iowrite32(((ap->port_no * 2 + link->pmp) << 8) | piix_sidx_map[reg],  in piix_sidpr_sel()
783 		  hpriv->sidpr + PIIX_SIDPR_IDX);  in piix_sidpr_sel()
789 	struct piix_host_priv *hpriv = link->ap->host->private_data;  in piix_sidpr_scr_read()
792 		return -EINVAL;  in piix_sidpr_scr_read()
795 	*val = ioread32(hpriv->sidpr + PIIX_SIDPR_DATA);  in piix_sidpr_scr_read()
802 	struct piix_host_priv *hpriv = link->ap->host->private_data;  in piix_sidpr_scr_write()
805 		return -EINVAL;  in piix_sidpr_scr_write()
808 	iowrite32(val, hpriv->sidpr + PIIX_SIDPR_DATA);  in piix_sidpr_scr_write()
822 	if (unlikely(!ap->ioaddr.bmdma_addr))  in piix_irq_check()
825 	host_stat = ap->ops->bmdma_status(ap);  in piix_irq_check()
961 			.ident = "VGN-BX297XP",  in piix_broken_suspend()
964 				DMI_MATCH(DMI_PRODUCT_NAME, "VGN-BX297XP"),  in piix_broken_suspend()
1011 		if (pdev->current_state == PCI_D0)  in piix_pci_device_suspend()
1012 			pdev->current_state = PCI_UNKNOWN;  in piix_pci_device_suspend()
1015 		spin_lock_irqsave(&host->lock, flags);  in piix_pci_device_suspend()
1016 		host->flags |= PIIX_HOST_BROKEN_SUSPEND;  in piix_pci_device_suspend()
1017 		spin_unlock_irqrestore(&host->lock, flags);  in piix_pci_device_suspend()
1030 	if (host->flags & PIIX_HOST_BROKEN_SUSPEND) {  in piix_pci_device_resume()
1031 		spin_lock_irqsave(&host->lock, flags);  in piix_pci_device_resume()
1032 		host->flags &= ~PIIX_HOST_BROKEN_SUSPEND;  in piix_pci_device_resume()
1033 		spin_unlock_irqrestore(&host->lock, flags);  in piix_pci_device_resume()
1044 			dev_err(&pdev->dev,  in piix_pci_device_resume()
1116 		.mwdma_mask	= ATA_MWDMA12_ONLY, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
1124 		.mwdma_mask	= ATA_MWDMA12_ONLY, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
1129 	[ich_pata_33] =		/* ICH0 - ICH at 33Mhz*/
1232 		.mwdma_mask	= ATA_MWDMA12_ONLY, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
1290 		return -ENOMEM;  in piix_disable_ahci()
1299 			rc = -EIO;  in piix_disable_ahci()
1307  *	piix_check_450nx_errata	-	Check for problem 450NX setup
1325 		if (pdev->revision == 0x00)  in piix_check_450nx_errata()
1328 		else if (cfg & (1<<14) && pdev->revision < 5)  in piix_check_450nx_errata()
1332 		dev_warn(&ata_dev->dev,  in piix_check_450nx_errata()
1334 			 no_piix_dma == 2 ? " - a BIOS update may resolve this"  in piix_check_450nx_errata()
1343 	struct pci_dev *pdev = to_pci_dev(host->dev);  in piix_init_pcs()
1348 	new_pcs = pcs | map_db->port_enable;  in piix_init_pcs()
1364 	char *p = buf, *end = buf + sizeof(buf);  in piix_init_sata_map()  local
1368 	map = map_db->map[map_value & map_db->mask];  in piix_init_sata_map()
1374 			p += scnprintf(p, end - p, " XX");  in piix_init_sata_map()
1378 			p += scnprintf(p, end - p, " --");  in piix_init_sata_map()
1385 			p += scnprintf(p, end - p, " IDE IDE");  in piix_init_sata_map()
1389 			p += scnprintf(p, end - p, " P%d", map[i]);  in piix_init_sata_map()
1395 	dev_info(&pdev->dev, "MAP [%s ]\n", buf);  in piix_init_sata_map()
1398 		dev_err(&pdev->dev, "invalid MAP value %u\n", map_value);  in piix_init_sata_map()
1405 	struct pci_dev *pdev = to_pci_dev(host->dev);  in piix_no_sidpr()
1408 	 * Samsung DB-P70 only has three ATA ports exposed and  in piix_no_sidpr()
1425 	if (pdev->vendor == PCI_VENDOR_ID_INTEL && pdev->device == 0x2920 &&  in piix_no_sidpr()
1426 	    pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG &&  in piix_no_sidpr()
1427 	    pdev->subsystem_device == 0xb049) {  in piix_no_sidpr()
1428 		dev_warn(host->dev,  in piix_no_sidpr()
1429 			 "Samsung DB-P70 detected, disabling SIDPR\n");  in piix_no_sidpr()
1438 	struct pci_dev *pdev = to_pci_dev(host->dev);  in piix_init_sidpr()
1439 	struct piix_host_priv *hpriv = host->private_data;  in piix_init_sidpr()
1440 	struct ata_link *link0 = &host->ports[0]->link;  in piix_init_sidpr()
1446 		if (hpriv->map[i] == IDE)  in piix_init_sidpr()
1452 	if (!(host->ports[0]->flags & PIIX_FLAG_SIDPR))  in piix_init_sidpr()
1462 	hpriv->sidpr = pcim_iomap_table(pdev)[PIIX_SIDPR_BAR];  in piix_init_sidpr()
1471 	 * un-inhibit power save modes as BIOS might have inhibited  in piix_init_sidpr()
1480 			dev_info(host->dev,  in piix_init_sidpr()
1488 		struct ata_port *ap = host->ports[i];  in piix_init_sidpr()
1490 		ap->ops = &piix_sidpr_sata_ops;  in piix_init_sidpr()
1492 		if (ap->flags & ATA_FLAG_SLAVE_POSS) {  in piix_init_sidpr()
1519 	struct pci_dev *pdev = to_pci_dev(host->dev);  in piix_iocfg_bit18_quirk()
1520 	struct piix_host_priv *hpriv = host->private_data;  in piix_iocfg_bit18_quirk()
1529 	if (hpriv->saved_iocfg & (1 << 18)) {  in piix_iocfg_bit18_quirk()
1530 		dev_info(&pdev->dev, "applying IOCFG bit18 quirk\n");  in piix_iocfg_bit18_quirk()
1532 				       hpriv->saved_iocfg & ~(1 << 18));  in piix_iocfg_bit18_quirk()
1540 			.ident = "HP Compaq 2510p",  in piix_broken_system_poweroff()
1542 				DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),  in piix_broken_system_poweroff()
1543 				DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 2510p"),  in piix_broken_system_poweroff()
1551 				DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),  in piix_broken_system_poweroff()
1563 		unsigned long slot = (unsigned long)dmi->driver_data;  in piix_broken_system_poweroff()
1564 		/* apply the quirk only to on-board controllers */  in piix_broken_system_poweroff()
1565 		return slot == PCI_SLOT(pdev->devfn);  in piix_broken_system_poweroff()
1574 	"Prefer Hyper-V paravirtualization drivers instead of ATA, "
1575 	"0 - Use ATA drivers, "
1576 	"1 (Default) - Use the paravirtualization drivers.");
1583 			/* On Hyper-V hypervisors the disks are exposed on  in piix_ignore_devices_quirk()
1589 			.ident = "Hyper-V Virtual Machine",  in piix_ignore_devices_quirk()
1601 			 * identical to a Hyper-V guest. One difference is the  in piix_ignore_devices_quirk()
1620 		host->flags |= ATA_HOST_IGNORE_ATA;  in piix_ignore_devices_quirk()
1621 		dev_info(host->dev, "%s detected, ATA device ignore set\n",  in piix_ignore_devices_quirk()
1622 			ignore->ident);  in piix_ignore_devices_quirk()
1628  *	piix_init_one - Register PIIX ATA PCI device with kernel services
1639  *	Zero on success, or -ERRNO value.
1644 	struct device *dev = &pdev->dev;  in piix_init_one()
1653 	ata_print_version_once(&pdev->dev, DRV_VERSION);  in piix_init_one()
1656 	if (!in_module_init && ent->driver_data >= ich5_sata)  in piix_init_one()
1657 		return -ENODEV;  in piix_init_one()
1660 		piix_port_info[ent->driver_data].flags |=  in piix_init_one()
1663 		dev_info(&pdev->dev, "quirky BIOS, skipping spindown "  in piix_init_one()
1667 	port_info[0] = piix_port_info[ent->driver_data];  in piix_init_one()
1668 	port_info[1] = piix_port_info[ent->driver_data];  in piix_init_one()
1679 		return -ENOMEM;  in piix_init_one()
1686 	pci_read_config_dword(pdev, PIIX_IOCFG, &hpriv->saved_iocfg);  in piix_init_one()
1692 	if (pdev->vendor == PCI_VENDOR_ID_INTEL && pdev->device == 0x2652) {  in piix_init_one()
1700 		hpriv->map = piix_init_sata_map(pdev, port_info,  in piix_init_one()
1701 					piix_map_db_table[ent->driver_data]);  in piix_init_one()
1706 	host->private_data = hpriv;  in piix_init_one()
1710 		piix_init_pcs(host, piix_map_db_table[ent->driver_data]);  in piix_init_one()
1714 		if (host->ports[0]->ops == &piix_sidpr_sata_ops)  in piix_init_one()
1725 	 * message-signalled interrupts currently).  in piix_init_one()
1734 		host->ports[0]->mwdma_mask = 0;  in piix_init_one()
1735 		host->ports[0]->udma_mask = 0;  in piix_init_one()
1736 		host->ports[1]->mwdma_mask = 0;  in piix_init_one()
1737 		host->ports[1]->udma_mask = 0;  in piix_init_one()
1739 	host->flags |= ATA_HOST_PARALLEL_SCAN;  in piix_init_one()
1751 	struct piix_host_priv *hpriv = host->private_data;  in piix_remove_one()
1753 	pci_write_config_dword(pdev, PIIX_IOCFG, hpriv->saved_iocfg);  in piix_remove_one()