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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 | ||
67881826 | 104 | if (speed >= XFER_UDMA_0) { |
4db90a14 BZ |
105 | u8 udma = speed - XFER_UDMA_0; |
106 | ||
107 | u_speed = min_t(u8, 2 - (udma & 1), udma) << (drive->dn * 4); | |
108 | ||
9c6712c0 JL |
109 | if (!(reg48 & u_flag)) |
110 | pci_write_config_byte(dev, 0x48, reg48 | u_flag); | |
111 | if (speed >= XFER_UDMA_5) { | |
112 | pci_write_config_byte(dev, 0x55, (u8) reg55|w_flag); | |
113 | } else { | |
114 | pci_write_config_byte(dev, 0x55, (u8) reg55 & ~w_flag); | |
115 | } | |
116 | ||
117 | if ((reg4a & a_speed) != u_speed) | |
118 | pci_write_config_word(dev, 0x4a, (reg4a & ~a_speed) | u_speed); | |
67881826 | 119 | if (speed > XFER_UDMA_2) { |
9c6712c0 JL |
120 | if (!(reg54 & v_flag)) |
121 | pci_write_config_byte(dev, 0x54, reg54 | v_flag); | |
122 | } else | |
123 | pci_write_config_byte(dev, 0x54, reg54 & ~v_flag); | |
67881826 | 124 | } else { |
8c91abf8 | 125 | const u8 mwdma_to_pio[] = { 0, 3, 4 }; |
1c54a93d | 126 | u8 pio; |
8c91abf8 | 127 | |
9c6712c0 JL |
128 | if (reg48 & u_flag) |
129 | pci_write_config_byte(dev, 0x48, reg48 & ~u_flag); | |
130 | if (reg4a & a_speed) | |
131 | pci_write_config_word(dev, 0x4a, reg4a & ~a_speed); | |
132 | if (reg54 & v_flag) | |
133 | pci_write_config_byte(dev, 0x54, reg54 & ~v_flag); | |
134 | if (reg55 & w_flag) | |
135 | pci_write_config_byte(dev, 0x55, (u8) reg55 & ~w_flag); | |
8c91abf8 BZ |
136 | |
137 | if (speed >= XFER_MW_DMA_0) | |
138 | pio = mwdma_to_pio[speed - XFER_MW_DMA_0]; | |
139 | else | |
140 | pio = 2; /* only SWDMA2 is allowed */ | |
68aaf815 | 141 | |
1c54a93d BZ |
142 | it8213_set_pio_mode(drive, pio); |
143 | } | |
67881826 | 144 | } |
9c6712c0 | 145 | |
9c6712c0 JL |
146 | /** |
147 | * init_hwif_it8213 - set up hwif structs | |
148 | * @hwif: interface to set up | |
149 | * | |
0ae2e178 | 150 | * We do the basic set up of the interface structure. |
9c6712c0 JL |
151 | */ |
152 | ||
153 | static void __devinit init_hwif_it8213(ide_hwif_t *hwif) | |
154 | { | |
49521f97 | 155 | u8 reg42h = 0; |
9c6712c0 | 156 | |
88b2b32b | 157 | hwif->set_dma_mode = &it8213_set_dma_mode; |
26bcb879 | 158 | hwif->set_pio_mode = &it8213_set_pio_mode; |
9c6712c0 | 159 | |
9c6712c0 | 160 | if (!hwif->dma_base) |
67881826 BZ |
161 | return; |
162 | ||
9c6712c0 | 163 | pci_read_config_byte(hwif->pci_dev, 0x42, ®42h); |
9c6712c0 | 164 | |
49521f97 BZ |
165 | if (hwif->cbl != ATA_CBL_PATA40_SHORT) |
166 | hwif->cbl = (reg42h & 0x02) ? ATA_CBL_PATA40 : ATA_CBL_PATA80; | |
9c6712c0 JL |
167 | } |
168 | ||
169 | ||
170 | #define DECLARE_ITE_DEV(name_str) \ | |
171 | { \ | |
172 | .name = name_str, \ | |
9c6712c0 | 173 | .init_hwif = init_hwif_it8213, \ |
9c6712c0 | 174 | .enablebits = {{0x41,0x80,0x80}}, \ |
7cab14a7 BZ |
175 | .host_flags = IDE_HFLAG_SINGLE | \ |
176 | IDE_HFLAG_BOOTABLE, \ | |
4099d143 | 177 | .pio_mask = ATA_PIO4, \ |
5f8b6c34 BZ |
178 | .swdma_mask = ATA_SWDMA2_ONLY, \ |
179 | .mwdma_mask = ATA_MWDMA12_ONLY, \ | |
180 | .udma_mask = ATA_UDMA6, \ | |
9c6712c0 JL |
181 | } |
182 | ||
85620436 | 183 | static const struct ide_port_info it8213_chipsets[] __devinitdata = { |
9c6712c0 JL |
184 | /* 0 */ DECLARE_ITE_DEV("IT8213"), |
185 | }; | |
186 | ||
187 | ||
188 | /** | |
189 | * it8213_init_one - pci layer discovery entry | |
190 | * @dev: PCI device | |
191 | * @id: ident table entry | |
192 | * | |
193 | * Called by the PCI code when it finds an ITE8213 controller. As | |
194 | * this device follows the standard interfaces we can use the | |
195 | * standard helper functions to do almost all the work for us. | |
196 | */ | |
197 | ||
198 | static int __devinit it8213_init_one(struct pci_dev *dev, const struct pci_device_id *id) | |
199 | { | |
200 | ide_setup_pci_device(dev, &it8213_chipsets[id->driver_data]); | |
201 | return 0; | |
202 | } | |
203 | ||
9cbcc5e3 BZ |
204 | static const struct pci_device_id it8213_pci_tbl[] = { |
205 | { PCI_VDEVICE(ITE, PCI_DEVICE_ID_ITE_8213), 0 }, | |
9c6712c0 JL |
206 | { 0, }, |
207 | }; | |
208 | ||
209 | MODULE_DEVICE_TABLE(pci, it8213_pci_tbl); | |
210 | ||
211 | static struct pci_driver driver = { | |
212 | .name = "ITE8213_IDE", | |
213 | .id_table = it8213_pci_tbl, | |
214 | .probe = it8213_init_one, | |
215 | }; | |
216 | ||
217 | static int __init it8213_ide_init(void) | |
218 | { | |
67881826 BZ |
219 | return ide_pci_register_driver(&driver); |
220 | } | |
9c6712c0 JL |
221 | |
222 | module_init(it8213_ide_init); | |
223 | ||
67881826 | 224 | MODULE_AUTHOR("Jack Lee, Alan Cox"); |
9c6712c0 JL |
225 | MODULE_DESCRIPTION("PCI driver module for the ITE 8213"); |
226 | MODULE_LICENSE("GPL"); |