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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002 * Copyright (C) 2003 ATI Inc. <hyu@ati.com>
Bartlomiej Zolnierkiewicz485efc62007-07-20 01:11:54 +02003 * Copyright (C) 2004,2007 Bartlomiej Zolnierkiewicz
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 */
5
Linus Torvalds1da177e2005-04-16 15:20:36 -07006#include <linux/types.h>
7#include <linux/module.h>
8#include <linux/kernel.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -07009#include <linux/pci.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070010#include <linux/ide.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070011#include <linux/init.h>
12
Bartlomiej Zolnierkiewiczced3ec82008-07-24 22:53:32 +020013#define DRV_NAME "atiixp"
14
Linus Torvalds1da177e2005-04-16 15:20:36 -070015#define ATIIXP_IDE_PIO_TIMING 0x40
16#define ATIIXP_IDE_MDMA_TIMING 0x44
17#define ATIIXP_IDE_PIO_CONTROL 0x48
18#define ATIIXP_IDE_PIO_MODE 0x4a
19#define ATIIXP_IDE_UDMA_CONTROL 0x54
20#define ATIIXP_IDE_UDMA_MODE 0x56
21
22typedef struct {
23 u8 command_width;
24 u8 recover_width;
25} atiixp_ide_timing;
26
27static atiixp_ide_timing pio_timing[] = {
28 { 0x05, 0x0d },
29 { 0x04, 0x07 },
30 { 0x03, 0x04 },
31 { 0x02, 0x02 },
32 { 0x02, 0x00 },
33};
34
35static atiixp_ide_timing mdma_timing[] = {
36 { 0x07, 0x07 },
37 { 0x02, 0x01 },
38 { 0x02, 0x00 },
39};
40
Alan6c5f8cc2007-01-05 16:36:27 -080041static DEFINE_SPINLOCK(atiixp_lock);
42
Linus Torvalds1da177e2005-04-16 15:20:36 -070043/**
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +020044 * atiixp_set_pio_mode - set host controller for PIO mode
Bartlomiej Zolnierkiewicze085b3c2010-01-19 01:44:41 -080045 * @hwif: port
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +020046 * @drive: drive
Linus Torvalds1da177e2005-04-16 15:20:36 -070047 *
48 * Set the interface PIO mode.
49 */
50
Bartlomiej Zolnierkiewicze085b3c2010-01-19 01:44:41 -080051static void atiixp_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -070052{
Bartlomiej Zolnierkiewicze085b3c2010-01-19 01:44:41 -080053 struct pci_dev *dev = to_pci_dev(hwif->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -070054 unsigned long flags;
Roel Kluinf76bee12009-02-25 20:28:22 +010055 int timing_shift = (drive->dn ^ 1) * 8;
Linus Torvalds1da177e2005-04-16 15:20:36 -070056 u32 pio_timing_data;
57 u16 pio_mode_data;
Bartlomiej Zolnierkiewicze085b3c2010-01-19 01:44:41 -080058 const u8 pio = drive->pio_mode - XFER_PIO_0;
Linus Torvalds1da177e2005-04-16 15:20:36 -070059
Alan6c5f8cc2007-01-05 16:36:27 -080060 spin_lock_irqsave(&atiixp_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -070061
62 pci_read_config_word(dev, ATIIXP_IDE_PIO_MODE, &pio_mode_data);
63 pio_mode_data &= ~(0x07 << (drive->dn * 4));
64 pio_mode_data |= (pio << (drive->dn * 4));
65 pci_write_config_word(dev, ATIIXP_IDE_PIO_MODE, pio_mode_data);
66
67 pci_read_config_dword(dev, ATIIXP_IDE_PIO_TIMING, &pio_timing_data);
68 pio_timing_data &= ~(0xff << timing_shift);
69 pio_timing_data |= (pio_timing[pio].recover_width << timing_shift) |
70 (pio_timing[pio].command_width << (timing_shift + 4));
71 pci_write_config_dword(dev, ATIIXP_IDE_PIO_TIMING, pio_timing_data);
72
Alan6c5f8cc2007-01-05 16:36:27 -080073 spin_unlock_irqrestore(&atiixp_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -070074}
75
76/**
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +020077 * atiixp_set_dma_mode - set host controller for DMA mode
Bartlomiej Zolnierkiewicz87761682010-01-19 01:45:29 -080078 * @hwif: port
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +020079 * @drive: drive
Linus Torvalds1da177e2005-04-16 15:20:36 -070080 *
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +020081 * Set a ATIIXP host controller to the desired DMA mode. This involves
82 * programming the right timing data into the PCI configuration space.
Linus Torvalds1da177e2005-04-16 15:20:36 -070083 */
84
Bartlomiej Zolnierkiewicz87761682010-01-19 01:45:29 -080085static void atiixp_set_dma_mode(ide_hwif_t *hwif, ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -070086{
Bartlomiej Zolnierkiewicz87761682010-01-19 01:45:29 -080087 struct pci_dev *dev = to_pci_dev(hwif->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -070088 unsigned long flags;
Roel Kluinf76bee12009-02-25 20:28:22 +010089 int timing_shift = (drive->dn ^ 1) * 8;
Linus Torvalds1da177e2005-04-16 15:20:36 -070090 u32 tmp32;
91 u16 tmp16;
Bartlomiej Zolnierkiewicz8ae60e32008-01-26 20:13:02 +010092 u16 udma_ctl = 0;
Bartlomiej Zolnierkiewicz87761682010-01-19 01:45:29 -080093 const u8 speed = drive->dma_mode;
Bartlomiej Zolnierkiewicz94c7fa02007-10-16 22:29:53 +020094
Alan6c5f8cc2007-01-05 16:36:27 -080095 spin_lock_irqsave(&atiixp_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -070096
Bartlomiej Zolnierkiewicz8ae60e32008-01-26 20:13:02 +010097 pci_read_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, &udma_ctl);
98
Linus Torvalds1da177e2005-04-16 15:20:36 -070099 if (speed >= XFER_UDMA_0) {
100 pci_read_config_word(dev, ATIIXP_IDE_UDMA_MODE, &tmp16);
101 tmp16 &= ~(0x07 << (drive->dn * 4));
102 tmp16 |= ((speed & 0x07) << (drive->dn * 4));
103 pci_write_config_word(dev, ATIIXP_IDE_UDMA_MODE, tmp16);
Bartlomiej Zolnierkiewicz8ae60e32008-01-26 20:13:02 +0100104
105 udma_ctl |= (1 << drive->dn);
106 } else if (speed >= XFER_MW_DMA_0) {
107 u8 i = speed & 0x03;
108
109 pci_read_config_dword(dev, ATIIXP_IDE_MDMA_TIMING, &tmp32);
110 tmp32 &= ~(0xff << timing_shift);
111 tmp32 |= (mdma_timing[i].recover_width << timing_shift) |
112 (mdma_timing[i].command_width << (timing_shift + 4));
113 pci_write_config_dword(dev, ATIIXP_IDE_MDMA_TIMING, tmp32);
114
115 udma_ctl &= ~(1 << drive->dn);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700116 }
117
Bartlomiej Zolnierkiewicz8ae60e32008-01-26 20:13:02 +0100118 pci_write_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, udma_ctl);
119
Alan6c5f8cc2007-01-05 16:36:27 -0800120 spin_unlock_irqrestore(&atiixp_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121}
122
Bartlomiej Zolnierkiewiczf454cbe2008-08-05 18:17:04 +0200123static u8 atiixp_cable_detect(ide_hwif_t *hwif)
Bartlomiej Zolnierkiewiczb4d1c732008-02-02 19:56:29 +0100124{
125 struct pci_dev *pdev = to_pci_dev(hwif->dev);
126 u8 udma_mode = 0, ch = hwif->channel;
127
128 pci_read_config_byte(pdev, ATIIXP_IDE_UDMA_MODE + ch, &udma_mode);
129
130 if ((udma_mode & 0x07) >= 0x04 || (udma_mode & 0x70) >= 0x40)
131 return ATA_CBL_PATA80;
132 else
133 return ATA_CBL_PATA40;
134}
135
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200136static const struct ide_port_ops atiixp_port_ops = {
137 .set_pio_mode = atiixp_set_pio_mode,
138 .set_dma_mode = atiixp_set_dma_mode,
139 .cable_detect = atiixp_cable_detect,
140};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700141
Bartlomiej Zolnierkiewicz85620432007-10-20 00:32:34 +0200142static const struct ide_port_info atiixp_pci_info[] __devinitdata = {
Bartlomiej Zolnierkiewiczced3ec82008-07-24 22:53:32 +0200143 { /* 0: IXP200/300/400/700 */
144 .name = DRV_NAME,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145 .enablebits = {{0x48,0x01,0x00}, {0x48,0x08,0x00}},
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200146 .port_ops = &atiixp_port_ops,
Bartlomiej Zolnierkiewicz4099d142007-07-20 01:11:59 +0200147 .pio_mask = ATA_PIO4,
Bartlomiej Zolnierkiewicz5f8b6c32007-10-19 00:30:07 +0200148 .mwdma_mask = ATA_MWDMA2,
149 .udma_mask = ATA_UDMA5,
Bartlomiej Zolnierkiewiczced3ec82008-07-24 22:53:32 +0200150 },
151 { /* 1: IXP600 */
152 .name = DRV_NAME,
Conke Hub25168d2007-01-27 13:46:30 +0100153 .enablebits = {{0x48,0x01,0x00}, {0x00,0x00,0x00}},
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200154 .port_ops = &atiixp_port_ops,
Bartlomiej Zolnierkiewicz24679222009-03-24 23:22:52 +0100155 .host_flags = IDE_HFLAG_SINGLE,
Bartlomiej Zolnierkiewicz4099d142007-07-20 01:11:59 +0200156 .pio_mask = ATA_PIO4,
Bartlomiej Zolnierkiewicz5f8b6c32007-10-19 00:30:07 +0200157 .mwdma_mask = ATA_MWDMA2,
158 .udma_mask = ATA_UDMA5,
Conke Hub25168d2007-01-27 13:46:30 +0100159 },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700160};
161
162/**
163 * atiixp_init_one - called when a ATIIXP is found
164 * @dev: the atiixp device
165 * @id: the matching pci id
166 *
167 * Called when the PCI registration layer (or the IDE initialization)
168 * finds a device matching our IDE device tables.
169 */
170
171static int __devinit atiixp_init_one(struct pci_dev *dev, const struct pci_device_id *id)
172{
Bartlomiej Zolnierkiewicz6cdf6eb2008-07-24 22:53:14 +0200173 return ide_pci_init_one(dev, &atiixp_pci_info[id->driver_data], NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174}
175
Bartlomiej Zolnierkiewicz9cbcc5e2007-10-16 22:29:56 +0200176static const struct pci_device_id atiixp_pci_tbl[] = {
177 { PCI_VDEVICE(ATI, PCI_DEVICE_ID_ATI_IXP200_IDE), 0 },
178 { PCI_VDEVICE(ATI, PCI_DEVICE_ID_ATI_IXP300_IDE), 0 },
179 { PCI_VDEVICE(ATI, PCI_DEVICE_ID_ATI_IXP400_IDE), 0 },
180 { PCI_VDEVICE(ATI, PCI_DEVICE_ID_ATI_IXP600_IDE), 1 },
181 { PCI_VDEVICE(ATI, PCI_DEVICE_ID_ATI_IXP700_IDE), 0 },
Shane Huang5deab532009-10-13 11:14:00 +0800182 { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_HUDSON2_IDE), 0 },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183 { 0, },
184};
185MODULE_DEVICE_TABLE(pci, atiixp_pci_tbl);
186
Bartlomiej Zolnierkiewicza9ab09e2008-10-13 21:39:41 +0200187static struct pci_driver atiixp_pci_driver = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700188 .name = "ATIIXP_IDE",
189 .id_table = atiixp_pci_tbl,
190 .probe = atiixp_init_one,
Bartlomiej Zolnierkiewiczf354fbc2008-07-24 22:53:20 +0200191 .remove = ide_pci_remove,
Bartlomiej Zolnierkiewiczfeb22b72008-10-10 22:39:32 +0200192 .suspend = ide_pci_suspend,
193 .resume = ide_pci_resume,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194};
195
Bartlomiej Zolnierkiewicz82ab1ee2007-01-27 13:46:56 +0100196static int __init atiixp_ide_init(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197{
Bartlomiej Zolnierkiewicza9ab09e2008-10-13 21:39:41 +0200198 return ide_pci_register_driver(&atiixp_pci_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700199}
200
Bartlomiej Zolnierkiewiczf354fbc2008-07-24 22:53:20 +0200201static void __exit atiixp_ide_exit(void)
202{
Bartlomiej Zolnierkiewicza9ab09e2008-10-13 21:39:41 +0200203 pci_unregister_driver(&atiixp_pci_driver);
Bartlomiej Zolnierkiewiczf354fbc2008-07-24 22:53:20 +0200204}
205
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206module_init(atiixp_ide_init);
Bartlomiej Zolnierkiewiczf354fbc2008-07-24 22:53:20 +0200207module_exit(atiixp_ide_exit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208
209MODULE_AUTHOR("HUI YU");
210MODULE_DESCRIPTION("PCI driver module for ATI IXP IDE");
211MODULE_LICENSE("GPL");