2 * linux/drivers/ide/pci/atiixp.c Version 0.05 Nov 9 2007
4 * Copyright (C) 2003 ATI Inc. <hyu@ati.com>
5 * Copyright (C) 2004,2007 Bartlomiej Zolnierkiewicz
8 #include <linux/types.h>
9 #include <linux/module.h>
10 #include <linux/kernel.h>
11 #include <linux/ioport.h>
12 #include <linux/pci.h>
13 #include <linux/hdreg.h>
14 #include <linux/ide.h>
15 #include <linux/delay.h>
16 #include <linux/init.h>
20 #define ATIIXP_IDE_PIO_TIMING 0x40
21 #define ATIIXP_IDE_MDMA_TIMING 0x44
22 #define ATIIXP_IDE_PIO_CONTROL 0x48
23 #define ATIIXP_IDE_PIO_MODE 0x4a
24 #define ATIIXP_IDE_UDMA_CONTROL 0x54
25 #define ATIIXP_IDE_UDMA_MODE 0x56
32 static atiixp_ide_timing pio_timing[] = {
40 static atiixp_ide_timing mdma_timing[] = {
46 static DEFINE_SPINLOCK(atiixp_lock);
49 * atiixp_set_pio_mode - set host controller for PIO mode
51 * @pio: PIO mode number
53 * Set the interface PIO mode.
56 static void atiixp_set_pio_mode(ide_drive_t *drive, const u8 pio)
58 struct pci_dev *dev = drive->hwif->pci_dev;
60 int timing_shift = (drive->dn & 2) ? 16 : 0 + (drive->dn & 1) ? 0 : 8;
64 spin_lock_irqsave(&atiixp_lock, flags);
66 pci_read_config_word(dev, ATIIXP_IDE_PIO_MODE, &pio_mode_data);
67 pio_mode_data &= ~(0x07 << (drive->dn * 4));
68 pio_mode_data |= (pio << (drive->dn * 4));
69 pci_write_config_word(dev, ATIIXP_IDE_PIO_MODE, pio_mode_data);
71 pci_read_config_dword(dev, ATIIXP_IDE_PIO_TIMING, &pio_timing_data);
72 pio_timing_data &= ~(0xff << timing_shift);
73 pio_timing_data |= (pio_timing[pio].recover_width << timing_shift) |
74 (pio_timing[pio].command_width << (timing_shift + 4));
75 pci_write_config_dword(dev, ATIIXP_IDE_PIO_TIMING, pio_timing_data);
77 spin_unlock_irqrestore(&atiixp_lock, flags);
81 * atiixp_set_dma_mode - set host controller for DMA mode
85 * Set a ATIIXP host controller to the desired DMA mode. This involves
86 * programming the right timing data into the PCI configuration space.
89 static void atiixp_set_dma_mode(ide_drive_t *drive, const u8 speed)
91 struct pci_dev *dev = drive->hwif->pci_dev;
93 int timing_shift = (drive->dn & 2) ? 16 : 0 + (drive->dn & 1) ? 0 : 8;
98 spin_lock_irqsave(&atiixp_lock, flags);
100 pci_read_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, &udma_ctl);
102 if (speed >= XFER_UDMA_0) {
103 pci_read_config_word(dev, ATIIXP_IDE_UDMA_MODE, &tmp16);
104 tmp16 &= ~(0x07 << (drive->dn * 4));
105 tmp16 |= ((speed & 0x07) << (drive->dn * 4));
106 pci_write_config_word(dev, ATIIXP_IDE_UDMA_MODE, tmp16);
108 udma_ctl |= (1 << drive->dn);
109 } else if (speed >= XFER_MW_DMA_0) {
112 pci_read_config_dword(dev, ATIIXP_IDE_MDMA_TIMING, &tmp32);
113 tmp32 &= ~(0xff << timing_shift);
114 tmp32 |= (mdma_timing[i].recover_width << timing_shift) |
115 (mdma_timing[i].command_width << (timing_shift + 4));
116 pci_write_config_dword(dev, ATIIXP_IDE_MDMA_TIMING, tmp32);
118 udma_ctl &= ~(1 << drive->dn);
121 pci_write_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, udma_ctl);
123 spin_unlock_irqrestore(&atiixp_lock, flags);
127 * init_hwif_atiixp - fill in the hwif for the ATIIXP
128 * @hwif: IDE interface
130 * Set up the ide_hwif_t for the ATIIXP interface according to the
131 * capabilities of the hardware.
134 static void __devinit init_hwif_atiixp(ide_hwif_t *hwif)
137 u8 ch = hwif->channel;
138 struct pci_dev *pdev = hwif->pci_dev;
140 hwif->set_pio_mode = &atiixp_set_pio_mode;
141 hwif->set_dma_mode = &atiixp_set_dma_mode;
146 pci_read_config_byte(pdev, ATIIXP_IDE_UDMA_MODE + ch, &udma_mode);
148 if ((udma_mode & 0x07) >= 0x04 || (udma_mode & 0x70) >= 0x40)
149 hwif->cbl = ATA_CBL_PATA80;
151 hwif->cbl = ATA_CBL_PATA40;
154 static const struct ide_port_info atiixp_pci_info[] __devinitdata = {
157 .init_hwif = init_hwif_atiixp,
158 .enablebits = {{0x48,0x01,0x00}, {0x48,0x08,0x00}},
159 .host_flags = IDE_HFLAG_LEGACY_IRQS | IDE_HFLAG_BOOTABLE,
160 .pio_mask = ATA_PIO4,
161 .mwdma_mask = ATA_MWDMA2,
162 .udma_mask = ATA_UDMA5,
164 .name = "SB600_PATA",
165 .init_hwif = init_hwif_atiixp,
166 .enablebits = {{0x48,0x01,0x00}, {0x00,0x00,0x00}},
167 .host_flags = IDE_HFLAG_SINGLE | IDE_HFLAG_LEGACY_IRQS |
169 .pio_mask = ATA_PIO4,
170 .mwdma_mask = ATA_MWDMA2,
171 .udma_mask = ATA_UDMA5,
176 * atiixp_init_one - called when a ATIIXP is found
177 * @dev: the atiixp device
178 * @id: the matching pci id
180 * Called when the PCI registration layer (or the IDE initialization)
181 * finds a device matching our IDE device tables.
184 static int __devinit atiixp_init_one(struct pci_dev *dev, const struct pci_device_id *id)
186 return ide_setup_pci_device(dev, &atiixp_pci_info[id->driver_data]);
189 static const struct pci_device_id atiixp_pci_tbl[] = {
190 { PCI_VDEVICE(ATI, PCI_DEVICE_ID_ATI_IXP200_IDE), 0 },
191 { PCI_VDEVICE(ATI, PCI_DEVICE_ID_ATI_IXP300_IDE), 0 },
192 { PCI_VDEVICE(ATI, PCI_DEVICE_ID_ATI_IXP400_IDE), 0 },
193 { PCI_VDEVICE(ATI, PCI_DEVICE_ID_ATI_IXP600_IDE), 1 },
194 { PCI_VDEVICE(ATI, PCI_DEVICE_ID_ATI_IXP700_IDE), 0 },
197 MODULE_DEVICE_TABLE(pci, atiixp_pci_tbl);
199 static struct pci_driver driver = {
200 .name = "ATIIXP_IDE",
201 .id_table = atiixp_pci_tbl,
202 .probe = atiixp_init_one,
205 static int __init atiixp_ide_init(void)
207 return ide_pci_register_driver(&driver);
210 module_init(atiixp_ide_init);
212 MODULE_AUTHOR("HUI YU");
213 MODULE_DESCRIPTION("PCI driver module for ATI IXP IDE");
214 MODULE_LICENSE("GPL");