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09c434b8 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
1da177e4 | 2 | /* |
1da177e4 | 3 | * Copyright (C) 2003 ATI Inc. <hyu@ati.com> |
485efc6c | 4 | * Copyright (C) 2004,2007 Bartlomiej Zolnierkiewicz |
1da177e4 LT |
5 | */ |
6 | ||
1da177e4 LT |
7 | #include <linux/types.h> |
8 | #include <linux/module.h> | |
9 | #include <linux/kernel.h> | |
1da177e4 | 10 | #include <linux/pci.h> |
1da177e4 | 11 | #include <linux/ide.h> |
1da177e4 LT |
12 | #include <linux/init.h> |
13 | ||
ced3ec8a BZ |
14 | #define DRV_NAME "atiixp" |
15 | ||
1da177e4 LT |
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 | ||
7546e52b | 23 | struct atiixp_ide_timing { |
1da177e4 LT |
24 | u8 command_width; |
25 | u8 recover_width; | |
7546e52b | 26 | }; |
1da177e4 | 27 | |
7546e52b | 28 | static struct atiixp_ide_timing pio_timing[] = { |
1da177e4 LT |
29 | { 0x05, 0x0d }, |
30 | { 0x04, 0x07 }, | |
31 | { 0x03, 0x04 }, | |
32 | { 0x02, 0x02 }, | |
33 | { 0x02, 0x00 }, | |
34 | }; | |
35 | ||
7546e52b | 36 | static struct atiixp_ide_timing mdma_timing[] = { |
1da177e4 LT |
37 | { 0x07, 0x07 }, |
38 | { 0x02, 0x01 }, | |
39 | { 0x02, 0x00 }, | |
40 | }; | |
41 | ||
6c5f8cc3 AC |
42 | static DEFINE_SPINLOCK(atiixp_lock); |
43 | ||
1da177e4 | 44 | /** |
88b2b32b | 45 | * atiixp_set_pio_mode - set host controller for PIO mode |
e085b3ca | 46 | * @hwif: port |
88b2b32b | 47 | * @drive: drive |
1da177e4 LT |
48 | * |
49 | * Set the interface PIO mode. | |
50 | */ | |
51 | ||
e085b3ca | 52 | static void atiixp_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive) |
1da177e4 | 53 | { |
e085b3ca | 54 | struct pci_dev *dev = to_pci_dev(hwif->dev); |
1da177e4 | 55 | unsigned long flags; |
f76bee16 | 56 | int timing_shift = (drive->dn ^ 1) * 8; |
1da177e4 LT |
57 | u32 pio_timing_data; |
58 | u16 pio_mode_data; | |
e085b3ca | 59 | const u8 pio = drive->pio_mode - XFER_PIO_0; |
1da177e4 | 60 | |
6c5f8cc3 | 61 | spin_lock_irqsave(&atiixp_lock, flags); |
1da177e4 LT |
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 | ||
6c5f8cc3 | 74 | spin_unlock_irqrestore(&atiixp_lock, flags); |
1da177e4 LT |
75 | } |
76 | ||
77 | /** | |
88b2b32b | 78 | * atiixp_set_dma_mode - set host controller for DMA mode |
8776168c | 79 | * @hwif: port |
88b2b32b | 80 | * @drive: drive |
1da177e4 | 81 | * |
88b2b32b BZ |
82 | * Set a ATIIXP host controller to the desired DMA mode. This involves |
83 | * programming the right timing data into the PCI configuration space. | |
1da177e4 LT |
84 | */ |
85 | ||
8776168c | 86 | static void atiixp_set_dma_mode(ide_hwif_t *hwif, ide_drive_t *drive) |
1da177e4 | 87 | { |
8776168c | 88 | struct pci_dev *dev = to_pci_dev(hwif->dev); |
1da177e4 | 89 | unsigned long flags; |
f76bee16 | 90 | int timing_shift = (drive->dn ^ 1) * 8; |
1da177e4 LT |
91 | u32 tmp32; |
92 | u16 tmp16; | |
8ae60e34 | 93 | u16 udma_ctl = 0; |
8776168c | 94 | const u8 speed = drive->dma_mode; |
94c7fa0f | 95 | |
6c5f8cc3 | 96 | spin_lock_irqsave(&atiixp_lock, flags); |
1da177e4 | 97 | |
8ae60e34 BZ |
98 | pci_read_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, &udma_ctl); |
99 | ||
1da177e4 LT |
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); | |
8ae60e34 BZ |
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); | |
1da177e4 LT |
117 | } |
118 | ||
8ae60e34 BZ |
119 | pci_write_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, udma_ctl); |
120 | ||
6c5f8cc3 | 121 | spin_unlock_irqrestore(&atiixp_lock, flags); |
1da177e4 LT |
122 | } |
123 | ||
f454cbe8 | 124 | static u8 atiixp_cable_detect(ide_hwif_t *hwif) |
b4d1c73d BZ |
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 | ||
ac95beed BZ |
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 | }; | |
1da177e4 | 142 | |
fe31edc8 | 143 | static const struct ide_port_info atiixp_pci_info[] = { |
ced3ec8a BZ |
144 | { /* 0: IXP200/300/400/700 */ |
145 | .name = DRV_NAME, | |
1da177e4 | 146 | .enablebits = {{0x48,0x01,0x00}, {0x48,0x08,0x00}}, |
ac95beed | 147 | .port_ops = &atiixp_port_ops, |
4099d143 | 148 | .pio_mask = ATA_PIO4, |
5f8b6c34 BZ |
149 | .mwdma_mask = ATA_MWDMA2, |
150 | .udma_mask = ATA_UDMA5, | |
ced3ec8a BZ |
151 | }, |
152 | { /* 1: IXP600 */ | |
153 | .name = DRV_NAME, | |
b25168df | 154 | .enablebits = {{0x48,0x01,0x00}, {0x00,0x00,0x00}}, |
ac95beed | 155 | .port_ops = &atiixp_port_ops, |
2467922a | 156 | .host_flags = IDE_HFLAG_SINGLE, |
4099d143 | 157 | .pio_mask = ATA_PIO4, |
5f8b6c34 BZ |
158 | .mwdma_mask = ATA_MWDMA2, |
159 | .udma_mask = ATA_UDMA5, | |
b25168df | 160 | }, |
1da177e4 LT |
161 | }; |
162 | ||
163 | /** | |
164 | * atiixp_init_one - called when a ATIIXP is found | |
165 | * @dev: the atiixp device | |
166 | * @id: the matching pci id | |
167 | * | |
168 | * Called when the PCI registration layer (or the IDE initialization) | |
169 | * finds a device matching our IDE device tables. | |
170 | */ | |
171 | ||
fe31edc8 | 172 | static int atiixp_init_one(struct pci_dev *dev, const struct pci_device_id *id) |
1da177e4 | 173 | { |
6cdf6eb3 | 174 | return ide_pci_init_one(dev, &atiixp_pci_info[id->driver_data], NULL); |
1da177e4 LT |
175 | } |
176 | ||
9cbcc5e3 BZ |
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 }, | |
5deab536 | 183 | { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_HUDSON2_IDE), 0 }, |
1da177e4 LT |
184 | { 0, }, |
185 | }; | |
186 | MODULE_DEVICE_TABLE(pci, atiixp_pci_tbl); | |
187 | ||
a9ab09e2 | 188 | static struct pci_driver atiixp_pci_driver = { |
1da177e4 LT |
189 | .name = "ATIIXP_IDE", |
190 | .id_table = atiixp_pci_tbl, | |
191 | .probe = atiixp_init_one, | |
f354fbc4 | 192 | .remove = ide_pci_remove, |
feb22b7f BZ |
193 | .suspend = ide_pci_suspend, |
194 | .resume = ide_pci_resume, | |
1da177e4 LT |
195 | }; |
196 | ||
82ab1eec | 197 | static int __init atiixp_ide_init(void) |
1da177e4 | 198 | { |
a9ab09e2 | 199 | return ide_pci_register_driver(&atiixp_pci_driver); |
1da177e4 LT |
200 | } |
201 | ||
f354fbc4 BZ |
202 | static void __exit atiixp_ide_exit(void) |
203 | { | |
a9ab09e2 | 204 | pci_unregister_driver(&atiixp_pci_driver); |
f354fbc4 BZ |
205 | } |
206 | ||
1da177e4 | 207 | module_init(atiixp_ide_init); |
f354fbc4 | 208 | module_exit(atiixp_ide_exit); |
1da177e4 LT |
209 | |
210 | MODULE_AUTHOR("HUI YU"); | |
211 | MODULE_DESCRIPTION("PCI driver module for ATI IXP IDE"); | |
212 | MODULE_LICENSE("GPL"); |