This source file includes following definitions.
- atiixp_set_pio_mode
- atiixp_set_dma_mode
- atiixp_cable_detect
- atiixp_init_one
- atiixp_ide_init
- atiixp_ide_exit
1
2
3
4
5
6
7 #include <linux/types.h>
8 #include <linux/module.h>
9 #include <linux/kernel.h>
10 #include <linux/pci.h>
11 #include <linux/ide.h>
12 #include <linux/init.h>
13
14 #define DRV_NAME "atiixp"
15
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
22
23 struct atiixp_ide_timing {
24 u8 command_width;
25 u8 recover_width;
26 };
27
28 static struct atiixp_ide_timing pio_timing[] = {
29 { 0x05, 0x0d },
30 { 0x04, 0x07 },
31 { 0x03, 0x04 },
32 { 0x02, 0x02 },
33 { 0x02, 0x00 },
34 };
35
36 static struct atiixp_ide_timing mdma_timing[] = {
37 { 0x07, 0x07 },
38 { 0x02, 0x01 },
39 { 0x02, 0x00 },
40 };
41
42 static DEFINE_SPINLOCK(atiixp_lock);
43
44
45
46
47
48
49
50
51
52 static void atiixp_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
53 {
54 struct pci_dev *dev = to_pci_dev(hwif->dev);
55 unsigned long flags;
56 int timing_shift = (drive->dn ^ 1) * 8;
57 u32 pio_timing_data;
58 u16 pio_mode_data;
59 const u8 pio = drive->pio_mode - XFER_PIO_0;
60
61 spin_lock_irqsave(&atiixp_lock, flags);
62
63 pci_read_config_word(dev, ATIIXP_IDE_PIO_MODE, &pio_mode_data);
64 pio_mode_data &= ~(0x07 << (drive->dn * 4));
65 pio_mode_data |= (pio << (drive->dn * 4));
66 pci_write_config_word(dev, ATIIXP_IDE_PIO_MODE, pio_mode_data);
67
68 pci_read_config_dword(dev, ATIIXP_IDE_PIO_TIMING, &pio_timing_data);
69 pio_timing_data &= ~(0xff << timing_shift);
70 pio_timing_data |= (pio_timing[pio].recover_width << timing_shift) |
71 (pio_timing[pio].command_width << (timing_shift + 4));
72 pci_write_config_dword(dev, ATIIXP_IDE_PIO_TIMING, pio_timing_data);
73
74 spin_unlock_irqrestore(&atiixp_lock, flags);
75 }
76
77
78
79
80
81
82
83
84
85
86 static void atiixp_set_dma_mode(ide_hwif_t *hwif, ide_drive_t *drive)
87 {
88 struct pci_dev *dev = to_pci_dev(hwif->dev);
89 unsigned long flags;
90 int timing_shift = (drive->dn ^ 1) * 8;
91 u32 tmp32;
92 u16 tmp16;
93 u16 udma_ctl = 0;
94 const u8 speed = drive->dma_mode;
95
96 spin_lock_irqsave(&atiixp_lock, flags);
97
98 pci_read_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, &udma_ctl);
99
100 if (speed >= XFER_UDMA_0) {
101 pci_read_config_word(dev, ATIIXP_IDE_UDMA_MODE, &tmp16);
102 tmp16 &= ~(0x07 << (drive->dn * 4));
103 tmp16 |= ((speed & 0x07) << (drive->dn * 4));
104 pci_write_config_word(dev, ATIIXP_IDE_UDMA_MODE, tmp16);
105
106 udma_ctl |= (1 << drive->dn);
107 } else if (speed >= XFER_MW_DMA_0) {
108 u8 i = speed & 0x03;
109
110 pci_read_config_dword(dev, ATIIXP_IDE_MDMA_TIMING, &tmp32);
111 tmp32 &= ~(0xff << timing_shift);
112 tmp32 |= (mdma_timing[i].recover_width << timing_shift) |
113 (mdma_timing[i].command_width << (timing_shift + 4));
114 pci_write_config_dword(dev, ATIIXP_IDE_MDMA_TIMING, tmp32);
115
116 udma_ctl &= ~(1 << drive->dn);
117 }
118
119 pci_write_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, udma_ctl);
120
121 spin_unlock_irqrestore(&atiixp_lock, flags);
122 }
123
124 static u8 atiixp_cable_detect(ide_hwif_t *hwif)
125 {
126 struct pci_dev *pdev = to_pci_dev(hwif->dev);
127 u8 udma_mode = 0, ch = hwif->channel;
128
129 pci_read_config_byte(pdev, ATIIXP_IDE_UDMA_MODE + ch, &udma_mode);
130
131 if ((udma_mode & 0x07) >= 0x04 || (udma_mode & 0x70) >= 0x40)
132 return ATA_CBL_PATA80;
133 else
134 return ATA_CBL_PATA40;
135 }
136
137 static const struct ide_port_ops atiixp_port_ops = {
138 .set_pio_mode = atiixp_set_pio_mode,
139 .set_dma_mode = atiixp_set_dma_mode,
140 .cable_detect = atiixp_cable_detect,
141 };
142
143 static const struct ide_port_info atiixp_pci_info[] = {
144 {
145 .name = DRV_NAME,
146 .enablebits = {{0x48,0x01,0x00}, {0x48,0x08,0x00}},
147 .port_ops = &atiixp_port_ops,
148 .pio_mask = ATA_PIO4,
149 .mwdma_mask = ATA_MWDMA2,
150 .udma_mask = ATA_UDMA5,
151 },
152 {
153 .name = DRV_NAME,
154 .enablebits = {{0x48,0x01,0x00}, {0x00,0x00,0x00}},
155 .port_ops = &atiixp_port_ops,
156 .host_flags = IDE_HFLAG_SINGLE,
157 .pio_mask = ATA_PIO4,
158 .mwdma_mask = ATA_MWDMA2,
159 .udma_mask = ATA_UDMA5,
160 },
161 };
162
163
164
165
166
167
168
169
170
171
172 static int atiixp_init_one(struct pci_dev *dev, const struct pci_device_id *id)
173 {
174 return ide_pci_init_one(dev, &atiixp_pci_info[id->driver_data], NULL);
175 }
176
177 static const struct pci_device_id atiixp_pci_tbl[] = {
178 { PCI_VDEVICE(ATI, PCI_DEVICE_ID_ATI_IXP200_IDE), 0 },
179 { PCI_VDEVICE(ATI, PCI_DEVICE_ID_ATI_IXP300_IDE), 0 },
180 { PCI_VDEVICE(ATI, PCI_DEVICE_ID_ATI_IXP400_IDE), 0 },
181 { PCI_VDEVICE(ATI, PCI_DEVICE_ID_ATI_IXP600_IDE), 1 },
182 { PCI_VDEVICE(ATI, PCI_DEVICE_ID_ATI_IXP700_IDE), 0 },
183 { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_HUDSON2_IDE), 0 },
184 { 0, },
185 };
186 MODULE_DEVICE_TABLE(pci, atiixp_pci_tbl);
187
188 static struct pci_driver atiixp_pci_driver = {
189 .name = "ATIIXP_IDE",
190 .id_table = atiixp_pci_tbl,
191 .probe = atiixp_init_one,
192 .remove = ide_pci_remove,
193 .suspend = ide_pci_suspend,
194 .resume = ide_pci_resume,
195 };
196
197 static int __init atiixp_ide_init(void)
198 {
199 return ide_pci_register_driver(&atiixp_pci_driver);
200 }
201
202 static void __exit atiixp_ide_exit(void)
203 {
204 pci_unregister_driver(&atiixp_pci_driver);
205 }
206
207 module_init(atiixp_ide_init);
208 module_exit(atiixp_ide_exit);
209
210 MODULE_AUTHOR("HUI YU");
211 MODULE_DESCRIPTION("PCI driver module for ATI IXP IDE");
212 MODULE_LICENSE("GPL");