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Jeff Garzik669a5db2006-08-29 18:12:40 -04001/*
2 * ata_generic.c - Generic PATA/SATA controller driver.
3 * Copyright 2005 Red Hat Inc <alan@redhat.com>, all rights reserved.
4 *
Jeff Garzik85cd7252006-08-31 00:03:49 -04005 * Elements from ide/pci/generic.c
Jeff Garzik669a5db2006-08-29 18:12:40 -04006 * Copyright (C) 2001-2002 Andre Hedrick <andre@linux-ide.org>
7 * Portions (C) Copyright 2002 Red Hat Inc <alan@redhat.com>
8 *
9 * May be copied or modified under the terms of the GNU General Public License
Jeff Garzik85cd7252006-08-31 00:03:49 -040010 *
Jeff Garzik669a5db2006-08-29 18:12:40 -040011 * Driver for PCI IDE interfaces implementing the standard bus mastering
12 * interface functionality. This assumes the BIOS did the drive set up and
13 * tuning for us. By default we do not grab all IDE class devices as they
14 * may have other drivers or need fixups to avoid problems. Instead we keep
15 * a default list of stuff without documentation/driver that appears to
Jeff Garzik85cd7252006-08-31 00:03:49 -040016 * work.
Jeff Garzik669a5db2006-08-29 18:12:40 -040017 */
18
19#include <linux/kernel.h>
20#include <linux/module.h>
21#include <linux/pci.h>
22#include <linux/init.h>
23#include <linux/blkdev.h>
24#include <linux/delay.h>
25#include <scsi/scsi_host.h>
26#include <linux/libata.h>
27
28#define DRV_NAME "ata_generic"
Alan Cox5e8f7572008-01-19 16:07:58 +000029#define DRV_VERSION "0.2.15"
Jeff Garzik669a5db2006-08-29 18:12:40 -040030
31/*
32 * A generic parallel ATA driver using libata
33 */
34
35/**
Jeff Garzik669a5db2006-08-29 18:12:40 -040036 * generic_set_mode - mode setting
Tejun Heo02607312007-08-06 18:36:23 +090037 * @link: link to set up
Alanb229a7b2007-01-24 11:47:07 +000038 * @unused: returned device on error
Jeff Garzik669a5db2006-08-29 18:12:40 -040039 *
40 * Use a non standard set_mode function. We don't want to be tuned.
41 * The BIOS configured everything. Our job is not to fiddle. We
42 * read the dma enabled bits from the PCI configuration of the device
Jeff Garzik85cd7252006-08-31 00:03:49 -040043 * and respect them.
Jeff Garzik669a5db2006-08-29 18:12:40 -040044 */
Jeff Garzik85cd7252006-08-31 00:03:49 -040045
Tejun Heo02607312007-08-06 18:36:23 +090046static int generic_set_mode(struct ata_link *link, struct ata_device **unused)
Jeff Garzik669a5db2006-08-29 18:12:40 -040047{
Tejun Heo02607312007-08-06 18:36:23 +090048 struct ata_port *ap = link->ap;
Jeff Garzik669a5db2006-08-29 18:12:40 -040049 int dma_enabled = 0;
Tejun Heof58229f2007-08-06 18:36:23 +090050 struct ata_device *dev;
Alan Cox5e8f7572008-01-19 16:07:58 +000051 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
Jeff Garzik669a5db2006-08-29 18:12:40 -040052
53 /* Bits 5 and 6 indicate if DMA is active on master/slave */
54 if (ap->ioaddr.bmdma_addr)
Alan Coxd6f4d5e2007-07-03 15:11:30 +010055 dma_enabled = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS);
Jeff Garzik85cd7252006-08-31 00:03:49 -040056
Alan Cox5e8f7572008-01-19 16:07:58 +000057 if (pdev->vendor == PCI_VENDOR_ID_CENATEK)
58 dma_enabled = 0xFF;
59
Tejun Heo02607312007-08-06 18:36:23 +090060 ata_link_for_each_dev(dev, link) {
Tejun Heof8ab6d82007-11-27 19:43:38 +090061 if (!ata_dev_enabled(dev))
62 continue;
63
64 /* We don't really care */
65 dev->pio_mode = XFER_PIO_0;
66 dev->dma_mode = XFER_MW_DMA_0;
67 /* We do need the right mode information for DMA or PIO
68 and this comes from the current configuration flags */
69 if (dma_enabled & (1 << (5 + dev->devno))) {
Tejun Heo9d3501a2007-11-27 19:43:41 +090070 unsigned int xfer_mask = ata_id_xfermask(dev->id);
71 const char *name;
72
73 if (xfer_mask & (ATA_MASK_MWDMA | ATA_MASK_UDMA))
74 name = ata_mode_string(xfer_mask);
75 else {
76 /* SWDMA perhaps? */
77 name = "DMA";
78 xfer_mask |= ata_xfer_mode2mask(XFER_MW_DMA_0);
79 }
80
81 ata_dev_printk(dev, KERN_INFO, "configured for %s\n",
82 name);
83
84 dev->xfer_mode = ata_xfer_mask2mode(xfer_mask);
85 dev->xfer_shift = ata_xfer_mode2shift(dev->xfer_mode);
Tejun Heof8ab6d82007-11-27 19:43:38 +090086 dev->flags &= ~ATA_DFLAG_PIO;
87 } else {
88 ata_dev_printk(dev, KERN_INFO, "configured for PIO\n");
89 dev->xfer_mode = XFER_PIO_0;
90 dev->xfer_shift = ATA_SHIFT_PIO;
91 dev->flags |= ATA_DFLAG_PIO;
Jeff Garzik669a5db2006-08-29 18:12:40 -040092 }
93 }
Alanb229a7b2007-01-24 11:47:07 +000094 return 0;
Jeff Garzik669a5db2006-08-29 18:12:40 -040095}
96
97static struct scsi_host_template generic_sht = {
Tejun Heo68d1d072008-03-25 12:22:49 +090098 ATA_BMDMA_SHT(DRV_NAME),
Jeff Garzik669a5db2006-08-29 18:12:40 -040099};
100
101static struct ata_port_operations generic_port_ops = {
Tejun Heo029cfd62008-03-25 12:22:49 +0900102 .inherits = &ata_bmdma_port_ops,
Alan Coxeb4a2c72007-04-11 00:04:20 +0100103 .cable_detect = ata_cable_unknown,
Tejun Heo029cfd62008-03-25 12:22:49 +0900104 .set_mode = generic_set_mode,
Jeff Garzik85cd7252006-08-31 00:03:49 -0400105};
106
Jeff Garzik669a5db2006-08-29 18:12:40 -0400107static int all_generic_ide; /* Set to claim all devices */
108
109/**
110 * ata_generic_init - attach generic IDE
111 * @dev: PCI device found
112 * @id: match entry
113 *
114 * Called each time a matching IDE interface is found. We check if the
Jeff Garzik85cd7252006-08-31 00:03:49 -0400115 * interface is one we wish to claim and if so we perform any chip
Jeff Garzik669a5db2006-08-29 18:12:40 -0400116 * specific hacks then let the ATA layer do the heavy lifting.
117 */
Jeff Garzik85cd7252006-08-31 00:03:49 -0400118
Jeff Garzik669a5db2006-08-29 18:12:40 -0400119static int ata_generic_init_one(struct pci_dev *dev, const struct pci_device_id *id)
120{
121 u16 command;
Tejun Heo1626aeb2007-05-04 12:43:58 +0200122 static const struct ata_port_info info = {
Jeff Garzik1d2808f2007-05-28 06:59:48 -0400123 .flags = ATA_FLAG_SLAVE_POSS,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400124 .pio_mask = 0x1f,
125 .mwdma_mask = 0x07,
Jeff Garzikbf6263a2007-07-09 12:16:50 -0400126 .udma_mask = ATA_UDMA5,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400127 .port_ops = &generic_port_ops
128 };
Tejun Heo1626aeb2007-05-04 12:43:58 +0200129 const struct ata_port_info *ppi[] = { &info, NULL };
Jeff Garzik85cd7252006-08-31 00:03:49 -0400130
Jeff Garzik669a5db2006-08-29 18:12:40 -0400131 /* Don't use the generic entry unless instructed to do so */
132 if (id->driver_data == 1 && all_generic_ide == 0)
133 return -ENODEV;
134
135 /* Devices that need care */
136 if (dev->vendor == PCI_VENDOR_ID_UMC &&
137 dev->device == PCI_DEVICE_ID_UMC_UM8886A &&
138 (!(PCI_FUNC(dev->devfn) & 1)))
139 return -ENODEV;
140
141 if (dev->vendor == PCI_VENDOR_ID_OPTI &&
142 dev->device == PCI_DEVICE_ID_OPTI_82C558 &&
143 (!(PCI_FUNC(dev->devfn) & 1)))
144 return -ENODEV;
145
146 /* Don't re-enable devices in generic mode or we will break some
147 motherboards with disabled and unused IDE controllers */
148 pci_read_config_word(dev, PCI_COMMAND, &command);
149 if (!(command & PCI_COMMAND_IO))
150 return -ENODEV;
Jeff Garzik85cd7252006-08-31 00:03:49 -0400151
Jeff Garzik669a5db2006-08-29 18:12:40 -0400152 if (dev->vendor == PCI_VENDOR_ID_AL)
Tejun Heo9363c382008-04-07 22:47:16 +0900153 ata_pci_bmdma_clear_simplex(dev);
Jeff Garzik669a5db2006-08-29 18:12:40 -0400154
Tejun Heo9363c382008-04-07 22:47:16 +0900155 return ata_pci_sff_init_one(dev, ppi, &generic_sht, NULL);
Jeff Garzik669a5db2006-08-29 18:12:40 -0400156}
157
158static struct pci_device_id ata_generic[] = {
159 { PCI_DEVICE(PCI_VENDOR_ID_PCTECH, PCI_DEVICE_ID_PCTECH_SAMURAI_IDE), },
160 { PCI_DEVICE(PCI_VENDOR_ID_HOLTEK, PCI_DEVICE_ID_HOLTEK_6565), },
Jeff Garzik85cd7252006-08-31 00:03:49 -0400161 { PCI_DEVICE(PCI_VENDOR_ID_UMC, PCI_DEVICE_ID_UMC_UM8673F), },
Jeff Garzik669a5db2006-08-29 18:12:40 -0400162 { PCI_DEVICE(PCI_VENDOR_ID_UMC, PCI_DEVICE_ID_UMC_UM8886A), },
163 { PCI_DEVICE(PCI_VENDOR_ID_UMC, PCI_DEVICE_ID_UMC_UM8886BF), },
164 { PCI_DEVICE(PCI_VENDOR_ID_HINT, PCI_DEVICE_ID_HINT_VXPROII_IDE), },
165 { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C561), },
166 { PCI_DEVICE(PCI_VENDOR_ID_OPTI, PCI_DEVICE_ID_OPTI_82C558), },
Alan Cox5e8f7572008-01-19 16:07:58 +0000167 { PCI_DEVICE(PCI_VENDOR_ID_CENATEK,PCI_DEVICE_ID_CENATEK_IDE), },
Jeff Garzik669a5db2006-08-29 18:12:40 -0400168 { PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO), },
169 { PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_1), },
170 { PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_2), },
171 /* Must come last. If you add entries adjust this table appropriately */
172 { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE << 8, 0xFFFFFF00UL, 1},
173 { 0, },
174};
175
176static struct pci_driver ata_generic_pci_driver = {
177 .name = DRV_NAME,
178 .id_table = ata_generic,
179 .probe = ata_generic_init_one,
Alan30ced0f2006-11-22 16:57:36 +0000180 .remove = ata_pci_remove_one,
Tejun Heo438ac6d2007-03-02 17:31:26 +0900181#ifdef CONFIG_PM
Alan30ced0f2006-11-22 16:57:36 +0000182 .suspend = ata_pci_device_suspend,
183 .resume = ata_pci_device_resume,
Tejun Heo438ac6d2007-03-02 17:31:26 +0900184#endif
Jeff Garzik669a5db2006-08-29 18:12:40 -0400185};
186
187static int __init ata_generic_init(void)
188{
Henrik Kretzschmar3f03c672006-10-10 14:28:12 -0700189 return pci_register_driver(&ata_generic_pci_driver);
Jeff Garzik669a5db2006-08-29 18:12:40 -0400190}
191
192
193static void __exit ata_generic_exit(void)
194{
195 pci_unregister_driver(&ata_generic_pci_driver);
196}
197
198
199MODULE_AUTHOR("Alan Cox");
200MODULE_DESCRIPTION("low-level driver for generic ATA");
201MODULE_LICENSE("GPL");
202MODULE_DEVICE_TABLE(pci, ata_generic);
203MODULE_VERSION(DRV_VERSION);
204
205module_init(ata_generic_init);
206module_exit(ata_generic_exit);
207
208module_param(all_generic_ide, int, 0);