2 * Copyright (C) 2003 ATI Inc. <hyu@ati.com>
3 * Copyright (C) 2004,2007 Bartlomiej Zolnierkiewicz
6 #include <linux/types.h>
7 #include <linux/module.h>
8 #include <linux/kernel.h>
10 #include <linux/hdreg.h>
11 #include <linux/ide.h>
12 #include <linux/init.h>
14 #define DRV_NAME "atiixp"
16 #define ATIIXP_IDE_PIO_TIMING 0x40
17 #define ATIIXP_IDE_MDMA_TIMING 0x44
18 #define ATIIXP_IDE_PIO_CONTROL 0x48
19 #define ATIIXP_IDE_PIO_MODE 0x4a
20 #define ATIIXP_IDE_UDMA_CONTROL 0x54
21 #define ATIIXP_IDE_UDMA_MODE 0x56
28 static atiixp_ide_timing pio_timing[] = {
36 static atiixp_ide_timing mdma_timing[] = {
42 static DEFINE_SPINLOCK(atiixp_lock);
45 * atiixp_set_pio_mode - set host controller for PIO mode
47 * @pio: PIO mode number
49 * Set the interface PIO mode.
52 static void atiixp_set_pio_mode(ide_drive_t *drive, const u8 pio)
54 struct pci_dev *dev = to_pci_dev(drive->hwif->dev);
56 int timing_shift = (drive->dn & 2) ? 16 : 0 + (drive->dn & 1) ? 0 : 8;
60 spin_lock_irqsave(&atiixp_lock, flags);
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);
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);
73 spin_unlock_irqrestore(&atiixp_lock, flags);
77 * atiixp_set_dma_mode - set host controller for DMA mode
81 * Set a ATIIXP host controller to the desired DMA mode. This involves
82 * programming the right timing data into the PCI configuration space.
85 static void atiixp_set_dma_mode(ide_drive_t *drive, const u8 speed)
87 struct pci_dev *dev = to_pci_dev(drive->hwif->dev);
89 int timing_shift = (drive->dn & 2) ? 16 : 0 + (drive->dn & 1) ? 0 : 8;
94 spin_lock_irqsave(&atiixp_lock, flags);
96 pci_read_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, &udma_ctl);
98 if (speed >= XFER_UDMA_0) {
99 pci_read_config_word(dev, ATIIXP_IDE_UDMA_MODE, &tmp16);
100 tmp16 &= ~(0x07 << (drive->dn * 4));
101 tmp16 |= ((speed & 0x07) << (drive->dn * 4));
102 pci_write_config_word(dev, ATIIXP_IDE_UDMA_MODE, tmp16);
104 udma_ctl |= (1 << drive->dn);
105 } else if (speed >= XFER_MW_DMA_0) {
108 pci_read_config_dword(dev, ATIIXP_IDE_MDMA_TIMING, &tmp32);
109 tmp32 &= ~(0xff << timing_shift);
110 tmp32 |= (mdma_timing[i].recover_width << timing_shift) |
111 (mdma_timing[i].command_width << (timing_shift + 4));
112 pci_write_config_dword(dev, ATIIXP_IDE_MDMA_TIMING, tmp32);
114 udma_ctl &= ~(1 << drive->dn);
117 pci_write_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, udma_ctl);
119 spin_unlock_irqrestore(&atiixp_lock, flags);
122 static u8 atiixp_cable_detect(ide_hwif_t *hwif)
124 struct pci_dev *pdev = to_pci_dev(hwif->dev);
125 u8 udma_mode = 0, ch = hwif->channel;
127 pci_read_config_byte(pdev, ATIIXP_IDE_UDMA_MODE + ch, &udma_mode);
129 if ((udma_mode & 0x07) >= 0x04 || (udma_mode & 0x70) >= 0x40)
130 return ATA_CBL_PATA80;
132 return ATA_CBL_PATA40;
135 static const struct ide_port_ops atiixp_port_ops = {
136 .set_pio_mode = atiixp_set_pio_mode,
137 .set_dma_mode = atiixp_set_dma_mode,
138 .cable_detect = atiixp_cable_detect,
141 static const struct ide_port_info atiixp_pci_info[] __devinitdata = {
142 { /* 0: IXP200/300/400/700 */
144 .enablebits = {{0x48,0x01,0x00}, {0x48,0x08,0x00}},
145 .port_ops = &atiixp_port_ops,
146 .host_flags = IDE_HFLAG_LEGACY_IRQS,
147 .pio_mask = ATA_PIO4,
148 .mwdma_mask = ATA_MWDMA2,
149 .udma_mask = ATA_UDMA5,
153 .enablebits = {{0x48,0x01,0x00}, {0x00,0x00,0x00}},
154 .port_ops = &atiixp_port_ops,
155 .host_flags = IDE_HFLAG_SINGLE | IDE_HFLAG_LEGACY_IRQS,
156 .pio_mask = ATA_PIO4,
157 .mwdma_mask = ATA_MWDMA2,
158 .udma_mask = ATA_UDMA5,
163 * atiixp_init_one - called when a ATIIXP is found
164 * @dev: the atiixp device
165 * @id: the matching pci id
167 * Called when the PCI registration layer (or the IDE initialization)
168 * finds a device matching our IDE device tables.
171 static int __devinit atiixp_init_one(struct pci_dev *dev, const struct pci_device_id *id)
173 return ide_pci_init_one(dev, &atiixp_pci_info[id->driver_data], NULL);
176 static 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 },
184 MODULE_DEVICE_TABLE(pci, atiixp_pci_tbl);
186 static struct pci_driver driver = {
187 .name = "ATIIXP_IDE",
188 .id_table = atiixp_pci_tbl,
189 .probe = atiixp_init_one,
190 .remove = ide_pci_remove,
193 static int __init atiixp_ide_init(void)
195 return ide_pci_register_driver(&driver);
198 static void __exit atiixp_ide_exit(void)
200 pci_unregister_driver(&driver);
203 module_init(atiixp_ide_init);
204 module_exit(atiixp_ide_exit);
206 MODULE_AUTHOR("HUI YU");
207 MODULE_DESCRIPTION("PCI driver module for ATI IXP IDE");
208 MODULE_LICENSE("GPL");