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 ATIIXP_IDE_PIO_TIMING 0x40
15 #define ATIIXP_IDE_MDMA_TIMING 0x44
16 #define ATIIXP_IDE_PIO_CONTROL 0x48
17 #define ATIIXP_IDE_PIO_MODE 0x4a
18 #define ATIIXP_IDE_UDMA_CONTROL 0x54
19 #define ATIIXP_IDE_UDMA_MODE 0x56
26 static atiixp_ide_timing pio_timing[] = {
34 static atiixp_ide_timing mdma_timing[] = {
40 static DEFINE_SPINLOCK(atiixp_lock);
43 * atiixp_set_pio_mode - set host controller for PIO mode
45 * @pio: PIO mode number
47 * Set the interface PIO mode.
50 static void atiixp_set_pio_mode(ide_drive_t *drive, const u8 pio)
52 struct pci_dev *dev = to_pci_dev(drive->hwif->dev);
54 int timing_shift = (drive->dn & 2) ? 16 : 0 + (drive->dn & 1) ? 0 : 8;
58 spin_lock_irqsave(&atiixp_lock, flags);
60 pci_read_config_word(dev, ATIIXP_IDE_PIO_MODE, &pio_mode_data);
61 pio_mode_data &= ~(0x07 << (drive->dn * 4));
62 pio_mode_data |= (pio << (drive->dn * 4));
63 pci_write_config_word(dev, ATIIXP_IDE_PIO_MODE, pio_mode_data);
65 pci_read_config_dword(dev, ATIIXP_IDE_PIO_TIMING, &pio_timing_data);
66 pio_timing_data &= ~(0xff << timing_shift);
67 pio_timing_data |= (pio_timing[pio].recover_width << timing_shift) |
68 (pio_timing[pio].command_width << (timing_shift + 4));
69 pci_write_config_dword(dev, ATIIXP_IDE_PIO_TIMING, pio_timing_data);
71 spin_unlock_irqrestore(&atiixp_lock, flags);
75 * atiixp_set_dma_mode - set host controller for DMA mode
79 * Set a ATIIXP host controller to the desired DMA mode. This involves
80 * programming the right timing data into the PCI configuration space.
83 static void atiixp_set_dma_mode(ide_drive_t *drive, const u8 speed)
85 struct pci_dev *dev = to_pci_dev(drive->hwif->dev);
87 int timing_shift = (drive->dn & 2) ? 16 : 0 + (drive->dn & 1) ? 0 : 8;
92 spin_lock_irqsave(&atiixp_lock, flags);
94 pci_read_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, &udma_ctl);
96 if (speed >= XFER_UDMA_0) {
97 pci_read_config_word(dev, ATIIXP_IDE_UDMA_MODE, &tmp16);
98 tmp16 &= ~(0x07 << (drive->dn * 4));
99 tmp16 |= ((speed & 0x07) << (drive->dn * 4));
100 pci_write_config_word(dev, ATIIXP_IDE_UDMA_MODE, tmp16);
102 udma_ctl |= (1 << drive->dn);
103 } else if (speed >= XFER_MW_DMA_0) {
106 pci_read_config_dword(dev, ATIIXP_IDE_MDMA_TIMING, &tmp32);
107 tmp32 &= ~(0xff << timing_shift);
108 tmp32 |= (mdma_timing[i].recover_width << timing_shift) |
109 (mdma_timing[i].command_width << (timing_shift + 4));
110 pci_write_config_dword(dev, ATIIXP_IDE_MDMA_TIMING, tmp32);
112 udma_ctl &= ~(1 << drive->dn);
115 pci_write_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, udma_ctl);
117 spin_unlock_irqrestore(&atiixp_lock, flags);
120 static u8 __devinit atiixp_cable_detect(ide_hwif_t *hwif)
122 struct pci_dev *pdev = to_pci_dev(hwif->dev);
123 u8 udma_mode = 0, ch = hwif->channel;
125 pci_read_config_byte(pdev, ATIIXP_IDE_UDMA_MODE + ch, &udma_mode);
127 if ((udma_mode & 0x07) >= 0x04 || (udma_mode & 0x70) >= 0x40)
128 return ATA_CBL_PATA80;
130 return ATA_CBL_PATA40;
134 * init_hwif_atiixp - fill in the hwif for the ATIIXP
135 * @hwif: IDE interface
137 * Set up the ide_hwif_t for the ATIIXP interface according to the
138 * capabilities of the hardware.
141 static void __devinit init_hwif_atiixp(ide_hwif_t *hwif)
143 hwif->set_pio_mode = &atiixp_set_pio_mode;
144 hwif->set_dma_mode = &atiixp_set_dma_mode;
146 hwif->cable_detect = atiixp_cable_detect;
149 static const struct ide_port_info atiixp_pci_info[] __devinitdata = {
152 .init_hwif = init_hwif_atiixp,
153 .enablebits = {{0x48,0x01,0x00}, {0x48,0x08,0x00}},
154 .host_flags = IDE_HFLAG_LEGACY_IRQS | IDE_HFLAG_BOOTABLE,
155 .pio_mask = ATA_PIO4,
156 .mwdma_mask = ATA_MWDMA2,
157 .udma_mask = ATA_UDMA5,
159 .name = "SB600_PATA",
160 .init_hwif = init_hwif_atiixp,
161 .enablebits = {{0x48,0x01,0x00}, {0x00,0x00,0x00}},
162 .host_flags = IDE_HFLAG_SINGLE | IDE_HFLAG_LEGACY_IRQS |
164 .pio_mask = ATA_PIO4,
165 .mwdma_mask = ATA_MWDMA2,
166 .udma_mask = ATA_UDMA5,
171 * atiixp_init_one - called when a ATIIXP is found
172 * @dev: the atiixp device
173 * @id: the matching pci id
175 * Called when the PCI registration layer (or the IDE initialization)
176 * finds a device matching our IDE device tables.
179 static int __devinit atiixp_init_one(struct pci_dev *dev, const struct pci_device_id *id)
181 return ide_setup_pci_device(dev, &atiixp_pci_info[id->driver_data]);
184 static const struct pci_device_id atiixp_pci_tbl[] = {
185 { PCI_VDEVICE(ATI, PCI_DEVICE_ID_ATI_IXP200_IDE), 0 },
186 { PCI_VDEVICE(ATI, PCI_DEVICE_ID_ATI_IXP300_IDE), 0 },
187 { PCI_VDEVICE(ATI, PCI_DEVICE_ID_ATI_IXP400_IDE), 0 },
188 { PCI_VDEVICE(ATI, PCI_DEVICE_ID_ATI_IXP600_IDE), 1 },
189 { PCI_VDEVICE(ATI, PCI_DEVICE_ID_ATI_IXP700_IDE), 0 },
192 MODULE_DEVICE_TABLE(pci, atiixp_pci_tbl);
194 static struct pci_driver driver = {
195 .name = "ATIIXP_IDE",
196 .id_table = atiixp_pci_tbl,
197 .probe = atiixp_init_one,
200 static int __init atiixp_ide_init(void)
202 return ide_pci_register_driver(&driver);
205 module_init(atiixp_ide_init);
207 MODULE_AUTHOR("HUI YU");
208 MODULE_DESCRIPTION("PCI driver module for ATI IXP IDE");
209 MODULE_LICENSE("GPL");