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Commit | Line | Data |
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67881826 BZ |
1 | /* |
2 | * ITE 8213 IDE driver | |
3 | * | |
4 | * Copyright (C) 2006 Jack Lee | |
5 | * Copyright (C) 2006 Alan Cox | |
6 | * Copyright (C) 2007 Bartlomiej Zolnierkiewicz | |
7 | */ | |
8 | ||
9c6712c0 JL |
9 | #include <linux/kernel.h> |
10 | #include <linux/types.h> | |
11 | #include <linux/module.h> | |
12 | #include <linux/pci.h> | |
13 | #include <linux/delay.h> | |
14 | #include <linux/hdreg.h> | |
15 | #include <linux/ide.h> | |
16 | #include <linux/init.h> | |
17 | ||
18 | #include <asm/io.h> | |
19 | ||
88b2b32b BZ |
20 | /** |
21 | * it8213_set_pio_mode - set host controller for PIO mode | |
22 | * @drive: drive | |
23 | * @pio: PIO mode number | |
9c6712c0 | 24 | * |
67881826 | 25 | * Set the interface PIO mode. |
9c6712c0 JL |
26 | */ |
27 | ||
88b2b32b | 28 | static void it8213_set_pio_mode(ide_drive_t *drive, const u8 pio) |
9c6712c0 JL |
29 | { |
30 | ide_hwif_t *hwif = HWIF(drive); | |
31 | struct pci_dev *dev = hwif->pci_dev; | |
67881826 | 32 | int is_slave = drive->dn & 1; |
9c6712c0 JL |
33 | int master_port = 0x40; |
34 | int slave_port = 0x44; | |
35 | unsigned long flags; | |
36 | u16 master_data; | |
37 | u8 slave_data; | |
67881826 BZ |
38 | static DEFINE_SPINLOCK(tune_lock); |
39 | int control = 0; | |
9c6712c0 | 40 | |
67881826 BZ |
41 | static const u8 timings[][2]= { |
42 | { 0, 0 }, | |
43 | { 0, 0 }, | |
44 | { 1, 0 }, | |
45 | { 2, 1 }, | |
46 | { 2, 3 }, }; | |
9c6712c0 | 47 | |
9c6712c0 JL |
48 | spin_lock_irqsave(&tune_lock, flags); |
49 | pci_read_config_word(dev, master_port, &master_data); | |
67881826 BZ |
50 | |
51 | if (pio > 1) | |
52 | control |= 1; /* Programmable timing on */ | |
53 | if (drive->media != ide_disk) | |
54 | control |= 4; /* ATAPI */ | |
55 | if (pio > 2) | |
56 | control |= 2; /* IORDY */ | |
9c6712c0 | 57 | if (is_slave) { |
67881826 BZ |
58 | master_data |= 0x4000; |
59 | master_data &= ~0x0070; | |
9c6712c0 | 60 | if (pio > 1) |
67881826 | 61 | master_data = master_data | (control << 4); |
9c6712c0 JL |
62 | pci_read_config_byte(dev, slave_port, &slave_data); |
63 | slave_data = slave_data & 0xf0; | |
67881826 | 64 | slave_data = slave_data | (timings[pio][0] << 2) | timings[pio][1]; |
9c6712c0 | 65 | } else { |
67881826 | 66 | master_data &= ~0x3307; |
9c6712c0 | 67 | if (pio > 1) |
67881826 | 68 | master_data = master_data | control; |
9c6712c0 JL |
69 | master_data = master_data | (timings[pio][0] << 12) | (timings[pio][1] << 8); |
70 | } | |
71 | pci_write_config_word(dev, master_port, master_data); | |
72 | if (is_slave) | |
73 | pci_write_config_byte(dev, slave_port, slave_data); | |
74 | spin_unlock_irqrestore(&tune_lock, flags); | |
75 | } | |
76 | ||
9c6712c0 | 77 | /** |
88b2b32b BZ |
78 | * it8213_set_dma_mode - set host controller for DMA mode |
79 | * @drive: drive | |
80 | * @speed: DMA mode | |
9c6712c0 | 81 | * |
88b2b32b | 82 | * Tune the ITE chipset for the DMA mode. |
9c6712c0 JL |
83 | */ |
84 | ||
88b2b32b | 85 | static void it8213_set_dma_mode(ide_drive_t *drive, const u8 speed) |
9c6712c0 | 86 | { |
9c6712c0 JL |
87 | ide_hwif_t *hwif = HWIF(drive); |
88 | struct pci_dev *dev = hwif->pci_dev; | |
89 | u8 maslave = 0x40; | |
9c6712c0 JL |
90 | int a_speed = 3 << (drive->dn * 4); |
91 | int u_flag = 1 << drive->dn; | |
92 | int v_flag = 0x01 << drive->dn; | |
93 | int w_flag = 0x10 << drive->dn; | |
94 | int u_speed = 0; | |
95 | u16 reg4042, reg4a; | |
1c54a93d | 96 | u8 reg48, reg54, reg55; |
9c6712c0 JL |
97 | |
98 | pci_read_config_word(dev, maslave, ®4042); | |
99 | pci_read_config_byte(dev, 0x48, ®48); | |
100 | pci_read_config_word(dev, 0x4a, ®4a); | |
101 | pci_read_config_byte(dev, 0x54, ®54); | |
102 | pci_read_config_byte(dev, 0x55, ®55); | |
103 | ||
104 | switch(speed) { | |
105 | case XFER_UDMA_6: | |
106 | case XFER_UDMA_4: | |
67881826 | 107 | case XFER_UDMA_2: u_speed = 2 << (drive->dn * 4); break; |
9c6712c0 JL |
108 | case XFER_UDMA_5: |
109 | case XFER_UDMA_3: | |
67881826 BZ |
110 | case XFER_UDMA_1: u_speed = 1 << (drive->dn * 4); break; |
111 | case XFER_UDMA_0: u_speed = 0 << (drive->dn * 4); break; | |
9c6712c0 JL |
112 | break; |
113 | case XFER_MW_DMA_2: | |
114 | case XFER_MW_DMA_1: | |
67881826 | 115 | case XFER_SW_DMA_2: |
9c6712c0 | 116 | break; |
9c6712c0 | 117 | default: |
88b2b32b | 118 | return; |
9c6712c0 JL |
119 | } |
120 | ||
67881826 | 121 | if (speed >= XFER_UDMA_0) { |
9c6712c0 JL |
122 | if (!(reg48 & u_flag)) |
123 | pci_write_config_byte(dev, 0x48, reg48 | u_flag); | |
124 | if (speed >= XFER_UDMA_5) { | |
125 | pci_write_config_byte(dev, 0x55, (u8) reg55|w_flag); | |
126 | } else { | |
127 | pci_write_config_byte(dev, 0x55, (u8) reg55 & ~w_flag); | |
128 | } | |
129 | ||
130 | if ((reg4a & a_speed) != u_speed) | |
131 | pci_write_config_word(dev, 0x4a, (reg4a & ~a_speed) | u_speed); | |
67881826 | 132 | if (speed > XFER_UDMA_2) { |
9c6712c0 JL |
133 | if (!(reg54 & v_flag)) |
134 | pci_write_config_byte(dev, 0x54, reg54 | v_flag); | |
135 | } else | |
136 | pci_write_config_byte(dev, 0x54, reg54 & ~v_flag); | |
67881826 | 137 | } else { |
8c91abf8 | 138 | const u8 mwdma_to_pio[] = { 0, 3, 4 }; |
1c54a93d | 139 | u8 pio; |
8c91abf8 | 140 | |
9c6712c0 JL |
141 | if (reg48 & u_flag) |
142 | pci_write_config_byte(dev, 0x48, reg48 & ~u_flag); | |
143 | if (reg4a & a_speed) | |
144 | pci_write_config_word(dev, 0x4a, reg4a & ~a_speed); | |
145 | if (reg54 & v_flag) | |
146 | pci_write_config_byte(dev, 0x54, reg54 & ~v_flag); | |
147 | if (reg55 & w_flag) | |
148 | pci_write_config_byte(dev, 0x55, (u8) reg55 & ~w_flag); | |
8c91abf8 BZ |
149 | |
150 | if (speed >= XFER_MW_DMA_0) | |
151 | pio = mwdma_to_pio[speed - XFER_MW_DMA_0]; | |
152 | else | |
153 | pio = 2; /* only SWDMA2 is allowed */ | |
68aaf815 | 154 | |
1c54a93d BZ |
155 | it8213_set_pio_mode(drive, pio); |
156 | } | |
67881826 | 157 | } |
9c6712c0 | 158 | |
9c6712c0 JL |
159 | /** |
160 | * init_hwif_it8213 - set up hwif structs | |
161 | * @hwif: interface to set up | |
162 | * | |
0ae2e178 | 163 | * We do the basic set up of the interface structure. |
9c6712c0 JL |
164 | */ |
165 | ||
166 | static void __devinit init_hwif_it8213(ide_hwif_t *hwif) | |
167 | { | |
49521f97 | 168 | u8 reg42h = 0; |
9c6712c0 | 169 | |
88b2b32b | 170 | hwif->set_dma_mode = &it8213_set_dma_mode; |
26bcb879 | 171 | hwif->set_pio_mode = &it8213_set_pio_mode; |
9c6712c0 | 172 | |
9c6712c0 JL |
173 | hwif->drives[0].autotune = 1; |
174 | hwif->drives[1].autotune = 1; | |
175 | ||
176 | if (!hwif->dma_base) | |
67881826 BZ |
177 | return; |
178 | ||
9c6712c0 | 179 | hwif->ultra_mask = 0x7f; |
67881826 BZ |
180 | hwif->mwdma_mask = 0x06; |
181 | hwif->swdma_mask = 0x04; | |
9c6712c0 JL |
182 | |
183 | pci_read_config_byte(hwif->pci_dev, 0x42, ®42h); | |
9c6712c0 | 184 | |
49521f97 BZ |
185 | if (hwif->cbl != ATA_CBL_PATA40_SHORT) |
186 | hwif->cbl = (reg42h & 0x02) ? ATA_CBL_PATA40 : ATA_CBL_PATA80; | |
9c6712c0 JL |
187 | } |
188 | ||
189 | ||
190 | #define DECLARE_ITE_DEV(name_str) \ | |
191 | { \ | |
192 | .name = name_str, \ | |
9c6712c0 | 193 | .init_hwif = init_hwif_it8213, \ |
67881826 | 194 | .autodma = AUTODMA, \ |
9c6712c0 JL |
195 | .enablebits = {{0x41,0x80,0x80}}, \ |
196 | .bootable = ON_BOARD, \ | |
a5d8c5c8 | 197 | .host_flags = IDE_HFLAG_SINGLE, \ |
4099d143 | 198 | .pio_mask = ATA_PIO4, \ |
9c6712c0 JL |
199 | } |
200 | ||
201 | static ide_pci_device_t it8213_chipsets[] __devinitdata = { | |
202 | /* 0 */ DECLARE_ITE_DEV("IT8213"), | |
203 | }; | |
204 | ||
205 | ||
206 | /** | |
207 | * it8213_init_one - pci layer discovery entry | |
208 | * @dev: PCI device | |
209 | * @id: ident table entry | |
210 | * | |
211 | * Called by the PCI code when it finds an ITE8213 controller. As | |
212 | * this device follows the standard interfaces we can use the | |
213 | * standard helper functions to do almost all the work for us. | |
214 | */ | |
215 | ||
216 | static int __devinit it8213_init_one(struct pci_dev *dev, const struct pci_device_id *id) | |
217 | { | |
218 | ide_setup_pci_device(dev, &it8213_chipsets[id->driver_data]); | |
219 | return 0; | |
220 | } | |
221 | ||
9cbcc5e3 BZ |
222 | static const struct pci_device_id it8213_pci_tbl[] = { |
223 | { PCI_VDEVICE(ITE, PCI_DEVICE_ID_ITE_8213), 0 }, | |
9c6712c0 JL |
224 | { 0, }, |
225 | }; | |
226 | ||
227 | MODULE_DEVICE_TABLE(pci, it8213_pci_tbl); | |
228 | ||
229 | static struct pci_driver driver = { | |
230 | .name = "ITE8213_IDE", | |
231 | .id_table = it8213_pci_tbl, | |
232 | .probe = it8213_init_one, | |
233 | }; | |
234 | ||
235 | static int __init it8213_ide_init(void) | |
236 | { | |
67881826 BZ |
237 | return ide_pci_register_driver(&driver); |
238 | } | |
9c6712c0 JL |
239 | |
240 | module_init(it8213_ide_init); | |
241 | ||
67881826 | 242 | MODULE_AUTHOR("Jack Lee, Alan Cox"); |
9c6712c0 JL |
243 | MODULE_DESCRIPTION("PCI driver module for the ITE 8213"); |
244 | MODULE_LICENSE("GPL"); |