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09c434b8 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
67881826 BZ |
2 | /* |
3 | * ITE 8213 IDE driver | |
4 | * | |
5 | * Copyright (C) 2006 Jack Lee | |
6 | * Copyright (C) 2006 Alan Cox | |
7 | * Copyright (C) 2007 Bartlomiej Zolnierkiewicz | |
8 | */ | |
9 | ||
9c6712c0 JL |
10 | #include <linux/kernel.h> |
11 | #include <linux/types.h> | |
12 | #include <linux/module.h> | |
13 | #include <linux/pci.h> | |
9c6712c0 JL |
14 | #include <linux/ide.h> |
15 | #include <linux/init.h> | |
16 | ||
ced3ec8a BZ |
17 | #define DRV_NAME "it8213" |
18 | ||
88b2b32b BZ |
19 | /** |
20 | * it8213_set_pio_mode - set host controller for PIO mode | |
e085b3ca | 21 | * @hwif: port |
88b2b32b | 22 | * @drive: drive |
9c6712c0 | 23 | * |
67881826 | 24 | * Set the interface PIO mode. |
9c6712c0 JL |
25 | */ |
26 | ||
e085b3ca | 27 | static void it8213_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive) |
9c6712c0 | 28 | { |
36501650 | 29 | struct pci_dev *dev = to_pci_dev(hwif->dev); |
67881826 | 30 | int is_slave = drive->dn & 1; |
9c6712c0 JL |
31 | int master_port = 0x40; |
32 | int slave_port = 0x44; | |
33 | unsigned long flags; | |
34 | u16 master_data; | |
35 | u8 slave_data; | |
67881826 BZ |
36 | static DEFINE_SPINLOCK(tune_lock); |
37 | int control = 0; | |
e085b3ca | 38 | const u8 pio = drive->pio_mode - XFER_PIO_0; |
9c6712c0 | 39 | |
a2826190 | 40 | static const u8 timings[][2] = { |
67881826 BZ |
41 | { 0, 0 }, |
42 | { 0, 0 }, | |
43 | { 1, 0 }, | |
44 | { 2, 1 }, | |
45 | { 2, 3 }, }; | |
9c6712c0 | 46 | |
9c6712c0 JL |
47 | spin_lock_irqsave(&tune_lock, flags); |
48 | pci_read_config_word(dev, master_port, &master_data); | |
67881826 BZ |
49 | |
50 | if (pio > 1) | |
51 | control |= 1; /* Programmable timing on */ | |
52 | if (drive->media != ide_disk) | |
53 | control |= 4; /* ATAPI */ | |
c9ef59ff | 54 | if (ide_pio_need_iordy(drive, pio)) |
67881826 | 55 | control |= 2; /* IORDY */ |
9c6712c0 | 56 | if (is_slave) { |
67881826 BZ |
57 | master_data |= 0x4000; |
58 | master_data &= ~0x0070; | |
9c6712c0 | 59 | if (pio > 1) |
67881826 | 60 | master_data = master_data | (control << 4); |
9c6712c0 JL |
61 | pci_read_config_byte(dev, slave_port, &slave_data); |
62 | slave_data = slave_data & 0xf0; | |
67881826 | 63 | slave_data = slave_data | (timings[pio][0] << 2) | timings[pio][1]; |
9c6712c0 | 64 | } else { |
67881826 | 65 | master_data &= ~0x3307; |
9c6712c0 | 66 | if (pio > 1) |
67881826 | 67 | master_data = master_data | control; |
9c6712c0 JL |
68 | master_data = master_data | (timings[pio][0] << 12) | (timings[pio][1] << 8); |
69 | } | |
70 | pci_write_config_word(dev, master_port, master_data); | |
71 | if (is_slave) | |
72 | pci_write_config_byte(dev, slave_port, slave_data); | |
73 | spin_unlock_irqrestore(&tune_lock, flags); | |
74 | } | |
75 | ||
9c6712c0 | 76 | /** |
88b2b32b | 77 | * it8213_set_dma_mode - set host controller for DMA mode |
8776168c | 78 | * @hwif: port |
88b2b32b | 79 | * @drive: drive |
9c6712c0 | 80 | * |
88b2b32b | 81 | * Tune the ITE chipset for the DMA mode. |
9c6712c0 JL |
82 | */ |
83 | ||
8776168c | 84 | static void it8213_set_dma_mode(ide_hwif_t *hwif, ide_drive_t *drive) |
9c6712c0 | 85 | { |
36501650 | 86 | struct pci_dev *dev = to_pci_dev(hwif->dev); |
9c6712c0 | 87 | u8 maslave = 0x40; |
9c6712c0 JL |
88 | int a_speed = 3 << (drive->dn * 4); |
89 | int u_flag = 1 << drive->dn; | |
90 | int v_flag = 0x01 << drive->dn; | |
91 | int w_flag = 0x10 << drive->dn; | |
92 | int u_speed = 0; | |
93 | u16 reg4042, reg4a; | |
1c54a93d | 94 | u8 reg48, reg54, reg55; |
8776168c | 95 | const u8 speed = drive->dma_mode; |
9c6712c0 JL |
96 | |
97 | pci_read_config_word(dev, maslave, ®4042); | |
98 | pci_read_config_byte(dev, 0x48, ®48); | |
99 | pci_read_config_word(dev, 0x4a, ®4a); | |
100 | pci_read_config_byte(dev, 0x54, ®54); | |
101 | pci_read_config_byte(dev, 0x55, ®55); | |
102 | ||
67881826 | 103 | if (speed >= XFER_UDMA_0) { |
4db90a14 BZ |
104 | u8 udma = speed - XFER_UDMA_0; |
105 | ||
106 | u_speed = min_t(u8, 2 - (udma & 1), udma) << (drive->dn * 4); | |
107 | ||
9c6712c0 JL |
108 | if (!(reg48 & u_flag)) |
109 | pci_write_config_byte(dev, 0x48, reg48 | u_flag); | |
a2826190 | 110 | if (speed >= XFER_UDMA_5) |
9c6712c0 | 111 | pci_write_config_byte(dev, 0x55, (u8) reg55|w_flag); |
a2826190 | 112 | else |
9c6712c0 | 113 | pci_write_config_byte(dev, 0x55, (u8) reg55 & ~w_flag); |
9c6712c0 JL |
114 | |
115 | if ((reg4a & a_speed) != u_speed) | |
116 | pci_write_config_word(dev, 0x4a, (reg4a & ~a_speed) | u_speed); | |
67881826 | 117 | if (speed > XFER_UDMA_2) { |
9c6712c0 JL |
118 | if (!(reg54 & v_flag)) |
119 | pci_write_config_byte(dev, 0x54, reg54 | v_flag); | |
120 | } else | |
121 | pci_write_config_byte(dev, 0x54, reg54 & ~v_flag); | |
67881826 | 122 | } else { |
8c91abf8 BZ |
123 | const u8 mwdma_to_pio[] = { 0, 3, 4 }; |
124 | ||
9c6712c0 JL |
125 | if (reg48 & u_flag) |
126 | pci_write_config_byte(dev, 0x48, reg48 & ~u_flag); | |
127 | if (reg4a & a_speed) | |
128 | pci_write_config_word(dev, 0x4a, reg4a & ~a_speed); | |
129 | if (reg54 & v_flag) | |
130 | pci_write_config_byte(dev, 0x54, reg54 & ~v_flag); | |
131 | if (reg55 & w_flag) | |
132 | pci_write_config_byte(dev, 0x55, (u8) reg55 & ~w_flag); | |
8c91abf8 BZ |
133 | |
134 | if (speed >= XFER_MW_DMA_0) | |
e085b3ca BZ |
135 | drive->pio_mode = |
136 | mwdma_to_pio[speed - XFER_MW_DMA_0] + XFER_PIO_0; | |
8c91abf8 | 137 | else |
e085b3ca | 138 | drive->pio_mode = XFER_PIO_2; /* for SWDMA2 */ |
68aaf815 | 139 | |
e085b3ca | 140 | it8213_set_pio_mode(hwif, drive); |
1c54a93d | 141 | } |
67881826 | 142 | } |
9c6712c0 | 143 | |
f454cbe8 | 144 | static u8 it8213_cable_detect(ide_hwif_t *hwif) |
bfa14b42 BZ |
145 | { |
146 | struct pci_dev *dev = to_pci_dev(hwif->dev); | |
147 | u8 reg42h = 0; | |
148 | ||
149 | pci_read_config_byte(dev, 0x42, ®42h); | |
150 | ||
151 | return (reg42h & 0x02) ? ATA_CBL_PATA40 : ATA_CBL_PATA80; | |
152 | } | |
153 | ||
ac95beed BZ |
154 | static const struct ide_port_ops it8213_port_ops = { |
155 | .set_pio_mode = it8213_set_pio_mode, | |
156 | .set_dma_mode = it8213_set_dma_mode, | |
157 | .cable_detect = it8213_cable_detect, | |
158 | }; | |
9c6712c0 | 159 | |
fe31edc8 | 160 | static const struct ide_port_info it8213_chipset = { |
ced3ec8a | 161 | .name = DRV_NAME, |
29f1ca92 BZ |
162 | .enablebits = { {0x41, 0x80, 0x80} }, |
163 | .port_ops = &it8213_port_ops, | |
164 | .host_flags = IDE_HFLAG_SINGLE, | |
165 | .pio_mask = ATA_PIO4, | |
166 | .swdma_mask = ATA_SWDMA2_ONLY, | |
167 | .mwdma_mask = ATA_MWDMA12_ONLY, | |
168 | .udma_mask = ATA_UDMA6, | |
9c6712c0 JL |
169 | }; |
170 | ||
9c6712c0 JL |
171 | /** |
172 | * it8213_init_one - pci layer discovery entry | |
173 | * @dev: PCI device | |
174 | * @id: ident table entry | |
175 | * | |
176 | * Called by the PCI code when it finds an ITE8213 controller. As | |
177 | * this device follows the standard interfaces we can use the | |
178 | * standard helper functions to do almost all the work for us. | |
179 | */ | |
180 | ||
fe31edc8 | 181 | static int it8213_init_one(struct pci_dev *dev, const struct pci_device_id *id) |
9c6712c0 | 182 | { |
29f1ca92 | 183 | return ide_pci_init_one(dev, &it8213_chipset, NULL); |
9c6712c0 JL |
184 | } |
185 | ||
9cbcc5e3 BZ |
186 | static const struct pci_device_id it8213_pci_tbl[] = { |
187 | { PCI_VDEVICE(ITE, PCI_DEVICE_ID_ITE_8213), 0 }, | |
9c6712c0 JL |
188 | { 0, }, |
189 | }; | |
190 | ||
191 | MODULE_DEVICE_TABLE(pci, it8213_pci_tbl); | |
192 | ||
a9ab09e2 | 193 | static struct pci_driver it8213_pci_driver = { |
9c6712c0 JL |
194 | .name = "ITE8213_IDE", |
195 | .id_table = it8213_pci_tbl, | |
196 | .probe = it8213_init_one, | |
5102f768 | 197 | .remove = ide_pci_remove, |
feb22b7f BZ |
198 | .suspend = ide_pci_suspend, |
199 | .resume = ide_pci_resume, | |
9c6712c0 JL |
200 | }; |
201 | ||
202 | static int __init it8213_ide_init(void) | |
203 | { | |
a9ab09e2 | 204 | return ide_pci_register_driver(&it8213_pci_driver); |
67881826 | 205 | } |
9c6712c0 | 206 | |
5102f768 BZ |
207 | static void __exit it8213_ide_exit(void) |
208 | { | |
a9ab09e2 | 209 | pci_unregister_driver(&it8213_pci_driver); |
5102f768 BZ |
210 | } |
211 | ||
9c6712c0 | 212 | module_init(it8213_ide_init); |
5102f768 | 213 | module_exit(it8213_ide_exit); |
9c6712c0 | 214 | |
67881826 | 215 | MODULE_AUTHOR("Jack Lee, Alan Cox"); |
9c6712c0 JL |
216 | MODULE_DESCRIPTION("PCI driver module for the ITE 8213"); |
217 | MODULE_LICENSE("GPL"); |