Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * |
| 3 | * Version 3.38 |
| 4 | * |
| 5 | * VIA IDE driver for Linux. Supported southbridges: |
| 6 | * |
| 7 | * vt82c576, vt82c586, vt82c586a, vt82c586b, vt82c596a, vt82c596b, |
| 8 | * vt82c686, vt82c686a, vt82c686b, vt8231, vt8233, vt8233c, vt8233a, |
Alan Cox | a7dec1e | 2006-08-30 19:14:25 +0100 | [diff] [blame] | 9 | * vt8235, vt8237, vt8237a |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | * |
| 11 | * Copyright (c) 2000-2002 Vojtech Pavlik |
| 12 | * |
| 13 | * Based on the work of: |
| 14 | * Michel Aubry |
| 15 | * Jeff Garzik |
| 16 | * Andre Hedrick |
| 17 | * |
| 18 | * Documentation: |
| 19 | * Obsolete device documentation publically available from via.com.tw |
| 20 | * Current device documentation available under NDA only |
| 21 | */ |
| 22 | |
| 23 | /* |
| 24 | * This program is free software; you can redistribute it and/or modify it |
| 25 | * under the terms of the GNU General Public License version 2 as published by |
| 26 | * the Free Software Foundation. |
| 27 | */ |
| 28 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | #include <linux/module.h> |
| 30 | #include <linux/kernel.h> |
| 31 | #include <linux/ioport.h> |
| 32 | #include <linux/blkdev.h> |
| 33 | #include <linux/pci.h> |
| 34 | #include <linux/init.h> |
| 35 | #include <linux/ide.h> |
| 36 | #include <asm/io.h> |
| 37 | |
Sascha Hauer | 74a9d5f | 2006-11-03 09:52:49 +0100 | [diff] [blame] | 38 | #ifdef CONFIG_PPC_CHRP |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | #include <asm/processor.h> |
| 40 | #endif |
| 41 | |
| 42 | #include "ide-timing.h" |
| 43 | |
| 44 | #define DISPLAY_VIA_TIMINGS |
| 45 | |
| 46 | #define VIA_IDE_ENABLE 0x40 |
| 47 | #define VIA_IDE_CONFIG 0x41 |
| 48 | #define VIA_FIFO_CONFIG 0x43 |
| 49 | #define VIA_MISC_1 0x44 |
| 50 | #define VIA_MISC_2 0x45 |
| 51 | #define VIA_MISC_3 0x46 |
| 52 | #define VIA_DRIVE_TIMING 0x48 |
| 53 | #define VIA_8BIT_TIMING 0x4e |
| 54 | #define VIA_ADDRESS_SETUP 0x4c |
| 55 | #define VIA_UDMA_TIMING 0x50 |
| 56 | |
| 57 | #define VIA_UDMA 0x007 |
| 58 | #define VIA_UDMA_NONE 0x000 |
| 59 | #define VIA_UDMA_33 0x001 |
| 60 | #define VIA_UDMA_66 0x002 |
| 61 | #define VIA_UDMA_100 0x003 |
| 62 | #define VIA_UDMA_133 0x004 |
| 63 | #define VIA_BAD_PREQ 0x010 /* Crashes if PREQ# till DDACK# set */ |
| 64 | #define VIA_BAD_CLK66 0x020 /* 66 MHz clock doesn't work correctly */ |
| 65 | #define VIA_SET_FIFO 0x040 /* Needs to have FIFO split set */ |
| 66 | #define VIA_NO_UNMASK 0x080 /* Doesn't work with IRQ unmasking on */ |
| 67 | #define VIA_BAD_ID 0x100 /* Has wrong vendor ID (0x1107) */ |
| 68 | #define VIA_BAD_AST 0x200 /* Don't touch Address Setup Timing */ |
| 69 | |
| 70 | /* |
| 71 | * VIA SouthBridge chips. |
| 72 | */ |
| 73 | |
| 74 | static struct via_isa_bridge { |
| 75 | char *name; |
| 76 | u16 id; |
| 77 | u8 rev_min; |
| 78 | u8 rev_max; |
| 79 | u16 flags; |
| 80 | } via_isa_bridges[] = { |
Mathias Kretschmer | 4f1d774 | 2005-11-19 21:32:38 +0100 | [diff] [blame] | 81 | { "vt6410", PCI_DEVICE_ID_VIA_6410, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST }, |
Daniel Drake | ceef833 | 2005-12-15 02:11:55 +0100 | [diff] [blame] | 82 | { "vt8251", PCI_DEVICE_ID_VIA_8251, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | { "vt8237", PCI_DEVICE_ID_VIA_8237, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST }, |
Alan Cox | a7dec1e | 2006-08-30 19:14:25 +0100 | [diff] [blame] | 84 | { "vt8237a", PCI_DEVICE_ID_VIA_8237A, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | { "vt8235", PCI_DEVICE_ID_VIA_8235, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST }, |
| 86 | { "vt8233a", PCI_DEVICE_ID_VIA_8233A, 0x00, 0x2f, VIA_UDMA_133 | VIA_BAD_AST }, |
| 87 | { "vt8233c", PCI_DEVICE_ID_VIA_8233C_0, 0x00, 0x2f, VIA_UDMA_100 }, |
| 88 | { "vt8233", PCI_DEVICE_ID_VIA_8233_0, 0x00, 0x2f, VIA_UDMA_100 }, |
| 89 | { "vt8231", PCI_DEVICE_ID_VIA_8231, 0x00, 0x2f, VIA_UDMA_100 }, |
| 90 | { "vt82c686b", PCI_DEVICE_ID_VIA_82C686, 0x40, 0x4f, VIA_UDMA_100 }, |
| 91 | { "vt82c686a", PCI_DEVICE_ID_VIA_82C686, 0x10, 0x2f, VIA_UDMA_66 }, |
| 92 | { "vt82c686", PCI_DEVICE_ID_VIA_82C686, 0x00, 0x0f, VIA_UDMA_33 | VIA_BAD_CLK66 }, |
| 93 | { "vt82c596b", PCI_DEVICE_ID_VIA_82C596, 0x10, 0x2f, VIA_UDMA_66 }, |
| 94 | { "vt82c596a", PCI_DEVICE_ID_VIA_82C596, 0x00, 0x0f, VIA_UDMA_33 | VIA_BAD_CLK66 }, |
| 95 | { "vt82c586b", PCI_DEVICE_ID_VIA_82C586_0, 0x47, 0x4f, VIA_UDMA_33 | VIA_SET_FIFO }, |
| 96 | { "vt82c586b", PCI_DEVICE_ID_VIA_82C586_0, 0x40, 0x46, VIA_UDMA_33 | VIA_SET_FIFO | VIA_BAD_PREQ }, |
| 97 | { "vt82c586b", PCI_DEVICE_ID_VIA_82C586_0, 0x30, 0x3f, VIA_UDMA_33 | VIA_SET_FIFO }, |
| 98 | { "vt82c586a", PCI_DEVICE_ID_VIA_82C586_0, 0x20, 0x2f, VIA_UDMA_33 | VIA_SET_FIFO }, |
| 99 | { "vt82c586", PCI_DEVICE_ID_VIA_82C586_0, 0x00, 0x0f, VIA_UDMA_NONE | VIA_SET_FIFO }, |
| 100 | { "vt82c576", PCI_DEVICE_ID_VIA_82C576, 0x00, 0x2f, VIA_UDMA_NONE | VIA_SET_FIFO | VIA_NO_UNMASK }, |
| 101 | { "vt82c576", PCI_DEVICE_ID_VIA_82C576, 0x00, 0x2f, VIA_UDMA_NONE | VIA_SET_FIFO | VIA_NO_UNMASK | VIA_BAD_ID }, |
| 102 | { NULL } |
| 103 | }; |
| 104 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | static unsigned int via_clock; |
| 106 | static char *via_dma[] = { "MWDMA16", "UDMA33", "UDMA66", "UDMA100", "UDMA133" }; |
| 107 | |
Daniel Drake | 7462cbf | 2005-11-18 22:09:45 +0100 | [diff] [blame] | 108 | struct via82cxxx_dev |
| 109 | { |
| 110 | struct via_isa_bridge *via_config; |
| 111 | unsigned int via_80w; |
| 112 | }; |
| 113 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | /** |
| 115 | * via_set_speed - write timing registers |
| 116 | * @dev: PCI device |
| 117 | * @dn: device |
| 118 | * @timing: IDE timing data to use |
| 119 | * |
| 120 | * via_set_speed writes timing values to the chipset registers |
| 121 | */ |
| 122 | |
Daniel Drake | 7462cbf | 2005-11-18 22:09:45 +0100 | [diff] [blame] | 123 | static void via_set_speed(ide_hwif_t *hwif, u8 dn, struct ide_timing *timing) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | { |
Daniel Drake | 7462cbf | 2005-11-18 22:09:45 +0100 | [diff] [blame] | 125 | struct pci_dev *dev = hwif->pci_dev; |
Bartlomiej Zolnierkiewicz | cd36bee | 2007-01-05 16:36:21 -0800 | [diff] [blame] | 126 | struct via82cxxx_dev *vdev = pci_get_drvdata(hwif->pci_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | u8 t; |
| 128 | |
Daniel Drake | 7462cbf | 2005-11-18 22:09:45 +0100 | [diff] [blame] | 129 | if (~vdev->via_config->flags & VIA_BAD_AST) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | pci_read_config_byte(dev, VIA_ADDRESS_SETUP, &t); |
| 131 | t = (t & ~(3 << ((3 - dn) << 1))) | ((FIT(timing->setup, 1, 4) - 1) << ((3 - dn) << 1)); |
| 132 | pci_write_config_byte(dev, VIA_ADDRESS_SETUP, t); |
| 133 | } |
| 134 | |
| 135 | pci_write_config_byte(dev, VIA_8BIT_TIMING + (1 - (dn >> 1)), |
| 136 | ((FIT(timing->act8b, 1, 16) - 1) << 4) | (FIT(timing->rec8b, 1, 16) - 1)); |
| 137 | |
| 138 | pci_write_config_byte(dev, VIA_DRIVE_TIMING + (3 - dn), |
| 139 | ((FIT(timing->active, 1, 16) - 1) << 4) | (FIT(timing->recover, 1, 16) - 1)); |
| 140 | |
Daniel Drake | 7462cbf | 2005-11-18 22:09:45 +0100 | [diff] [blame] | 141 | switch (vdev->via_config->flags & VIA_UDMA) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | case VIA_UDMA_33: t = timing->udma ? (0xe0 | (FIT(timing->udma, 2, 5) - 2)) : 0x03; break; |
| 143 | case VIA_UDMA_66: t = timing->udma ? (0xe8 | (FIT(timing->udma, 2, 9) - 2)) : 0x0f; break; |
| 144 | case VIA_UDMA_100: t = timing->udma ? (0xe0 | (FIT(timing->udma, 2, 9) - 2)) : 0x07; break; |
| 145 | case VIA_UDMA_133: t = timing->udma ? (0xe0 | (FIT(timing->udma, 2, 9) - 2)) : 0x07; break; |
| 146 | default: return; |
| 147 | } |
| 148 | |
| 149 | pci_write_config_byte(dev, VIA_UDMA_TIMING + (3 - dn), t); |
| 150 | } |
| 151 | |
| 152 | /** |
| 153 | * via_set_drive - configure transfer mode |
| 154 | * @drive: Drive to set up |
| 155 | * @speed: desired speed |
| 156 | * |
| 157 | * via_set_drive() computes timing values configures the drive and |
| 158 | * the chipset to a desired transfer mode. It also can be called |
| 159 | * by upper layers. |
| 160 | */ |
| 161 | |
| 162 | static int via_set_drive(ide_drive_t *drive, u8 speed) |
| 163 | { |
| 164 | ide_drive_t *peer = HWIF(drive)->drives + (~drive->dn & 1); |
Bartlomiej Zolnierkiewicz | cd36bee | 2007-01-05 16:36:21 -0800 | [diff] [blame] | 165 | struct via82cxxx_dev *vdev = pci_get_drvdata(drive->hwif->pci_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | struct ide_timing t, p; |
| 167 | unsigned int T, UT; |
| 168 | |
| 169 | if (speed != XFER_PIO_SLOW) |
| 170 | ide_config_drive_speed(drive, speed); |
| 171 | |
| 172 | T = 1000000000 / via_clock; |
| 173 | |
Daniel Drake | 7462cbf | 2005-11-18 22:09:45 +0100 | [diff] [blame] | 174 | switch (vdev->via_config->flags & VIA_UDMA) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | case VIA_UDMA_33: UT = T; break; |
| 176 | case VIA_UDMA_66: UT = T/2; break; |
| 177 | case VIA_UDMA_100: UT = T/3; break; |
| 178 | case VIA_UDMA_133: UT = T/4; break; |
| 179 | default: UT = T; |
| 180 | } |
| 181 | |
| 182 | ide_timing_compute(drive, speed, &t, T, UT); |
| 183 | |
| 184 | if (peer->present) { |
| 185 | ide_timing_compute(peer, peer->current_speed, &p, T, UT); |
| 186 | ide_timing_merge(&p, &t, &t, IDE_TIMING_8BIT); |
| 187 | } |
| 188 | |
Daniel Drake | 7462cbf | 2005-11-18 22:09:45 +0100 | [diff] [blame] | 189 | via_set_speed(HWIF(drive), drive->dn, &t); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | |
| 191 | if (!drive->init_speed) |
| 192 | drive->init_speed = speed; |
| 193 | drive->current_speed = speed; |
| 194 | |
| 195 | return 0; |
| 196 | } |
| 197 | |
| 198 | /** |
| 199 | * via82cxxx_tune_drive - PIO setup |
| 200 | * @drive: drive to set up |
| 201 | * @pio: mode to use (255 for 'best possible') |
| 202 | * |
| 203 | * A callback from the upper layers for PIO-only tuning. |
| 204 | */ |
| 205 | |
| 206 | static void via82cxxx_tune_drive(ide_drive_t *drive, u8 pio) |
| 207 | { |
| 208 | if (pio == 255) { |
| 209 | via_set_drive(drive, |
| 210 | ide_find_best_mode(drive, XFER_PIO | XFER_EPIO)); |
| 211 | return; |
| 212 | } |
| 213 | |
| 214 | via_set_drive(drive, XFER_PIO_0 + min_t(u8, pio, 5)); |
| 215 | } |
| 216 | |
| 217 | /** |
| 218 | * via82cxxx_ide_dma_check - set up for DMA if possible |
| 219 | * @drive: IDE drive to set up |
| 220 | * |
| 221 | * Set up the drive for the highest supported speed considering the |
| 222 | * driver, controller and cable |
| 223 | */ |
| 224 | |
| 225 | static int via82cxxx_ide_dma_check (ide_drive_t *drive) |
| 226 | { |
Daniel Drake | 7462cbf | 2005-11-18 22:09:45 +0100 | [diff] [blame] | 227 | ide_hwif_t *hwif = HWIF(drive); |
Bartlomiej Zolnierkiewicz | cd36bee | 2007-01-05 16:36:21 -0800 | [diff] [blame] | 228 | struct via82cxxx_dev *vdev = pci_get_drvdata(hwif->pci_dev); |
Daniel Drake | 7462cbf | 2005-11-18 22:09:45 +0100 | [diff] [blame] | 229 | u16 w80 = hwif->udma_four; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | |
| 231 | u16 speed = ide_find_best_mode(drive, |
| 232 | XFER_PIO | XFER_EPIO | XFER_SWDMA | XFER_MWDMA | |
Daniel Drake | 7462cbf | 2005-11-18 22:09:45 +0100 | [diff] [blame] | 233 | (vdev->via_config->flags & VIA_UDMA ? XFER_UDMA : 0) | |
| 234 | (w80 && (vdev->via_config->flags & VIA_UDMA) >= VIA_UDMA_66 ? XFER_UDMA_66 : 0) | |
| 235 | (w80 && (vdev->via_config->flags & VIA_UDMA) >= VIA_UDMA_100 ? XFER_UDMA_100 : 0) | |
| 236 | (w80 && (vdev->via_config->flags & VIA_UDMA) >= VIA_UDMA_133 ? XFER_UDMA_133 : 0)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | |
| 238 | via_set_drive(drive, speed); |
| 239 | |
| 240 | if (drive->autodma && (speed & XFER_MODE) != XFER_PIO) |
Daniel Drake | 7462cbf | 2005-11-18 22:09:45 +0100 | [diff] [blame] | 241 | return hwif->ide_dma_on(drive); |
| 242 | return hwif->ide_dma_off_quietly(drive); |
| 243 | } |
| 244 | |
| 245 | static struct via_isa_bridge *via_config_find(struct pci_dev **isa) |
| 246 | { |
| 247 | struct via_isa_bridge *via_config; |
| 248 | u8 t; |
| 249 | |
| 250 | for (via_config = via_isa_bridges; via_config->id; via_config++) |
Alan Cox | 652aa16 | 2006-10-03 01:14:35 -0700 | [diff] [blame] | 251 | if ((*isa = pci_get_device(PCI_VENDOR_ID_VIA + |
Daniel Drake | 7462cbf | 2005-11-18 22:09:45 +0100 | [diff] [blame] | 252 | !!(via_config->flags & VIA_BAD_ID), |
| 253 | via_config->id, NULL))) { |
| 254 | |
| 255 | pci_read_config_byte(*isa, PCI_REVISION_ID, &t); |
| 256 | if (t >= via_config->rev_min && |
| 257 | t <= via_config->rev_max) |
| 258 | break; |
Alan Cox | 652aa16 | 2006-10-03 01:14:35 -0700 | [diff] [blame] | 259 | pci_dev_put(*isa); |
Daniel Drake | 7462cbf | 2005-11-18 22:09:45 +0100 | [diff] [blame] | 260 | } |
| 261 | |
| 262 | return via_config; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | } |
| 264 | |
Bartlomiej Zolnierkiewicz | cd36bee | 2007-01-05 16:36:21 -0800 | [diff] [blame] | 265 | /* |
| 266 | * Check and handle 80-wire cable presence |
| 267 | */ |
| 268 | static void __devinit via_cable_detect(struct via82cxxx_dev *vdev, u32 u) |
| 269 | { |
| 270 | int i; |
| 271 | |
| 272 | switch (vdev->via_config->flags & VIA_UDMA) { |
| 273 | case VIA_UDMA_66: |
| 274 | for (i = 24; i >= 0; i -= 8) |
| 275 | if (((u >> (i & 16)) & 8) && |
| 276 | ((u >> i) & 0x20) && |
| 277 | (((u >> i) & 7) < 2)) { |
| 278 | /* |
| 279 | * 2x PCI clock and |
| 280 | * UDMA w/ < 3T/cycle |
| 281 | */ |
| 282 | vdev->via_80w |= (1 << (1 - (i >> 4))); |
| 283 | } |
| 284 | break; |
| 285 | |
| 286 | case VIA_UDMA_100: |
| 287 | for (i = 24; i >= 0; i -= 8) |
| 288 | if (((u >> i) & 0x10) || |
| 289 | (((u >> i) & 0x20) && |
| 290 | (((u >> i) & 7) < 4))) { |
| 291 | /* BIOS 80-wire bit or |
| 292 | * UDMA w/ < 60ns/cycle |
| 293 | */ |
| 294 | vdev->via_80w |= (1 << (1 - (i >> 4))); |
| 295 | } |
| 296 | break; |
| 297 | |
| 298 | case VIA_UDMA_133: |
| 299 | for (i = 24; i >= 0; i -= 8) |
| 300 | if (((u >> i) & 0x10) || |
| 301 | (((u >> i) & 0x20) && |
| 302 | (((u >> i) & 7) < 6))) { |
| 303 | /* BIOS 80-wire bit or |
| 304 | * UDMA w/ < 60ns/cycle |
| 305 | */ |
| 306 | vdev->via_80w |= (1 << (1 - (i >> 4))); |
| 307 | } |
| 308 | break; |
| 309 | } |
| 310 | } |
| 311 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | /** |
| 313 | * init_chipset_via82cxxx - initialization handler |
| 314 | * @dev: PCI device |
| 315 | * @name: Name of interface |
| 316 | * |
| 317 | * The initialization callback. Here we determine the IDE chip type |
| 318 | * and initialize its drive independent registers. |
| 319 | */ |
| 320 | |
Herbert Xu | f3718d3 | 2005-07-03 16:42:18 +0200 | [diff] [blame] | 321 | static unsigned int __devinit init_chipset_via82cxxx(struct pci_dev *dev, const char *name) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | { |
| 323 | struct pci_dev *isa = NULL; |
Bartlomiej Zolnierkiewicz | cd36bee | 2007-01-05 16:36:21 -0800 | [diff] [blame] | 324 | struct via82cxxx_dev *vdev; |
Daniel Drake | 7462cbf | 2005-11-18 22:09:45 +0100 | [diff] [blame] | 325 | struct via_isa_bridge *via_config; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | u8 t, v; |
Bartlomiej Zolnierkiewicz | cd36bee | 2007-01-05 16:36:21 -0800 | [diff] [blame] | 327 | u32 u; |
| 328 | |
| 329 | vdev = kzalloc(sizeof(*vdev), GFP_KERNEL); |
| 330 | if (!vdev) { |
| 331 | printk(KERN_ERR "VP_IDE: out of memory :(\n"); |
| 332 | return -ENOMEM; |
| 333 | } |
| 334 | pci_set_drvdata(dev, vdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | |
| 336 | /* |
| 337 | * Find the ISA bridge to see how good the IDE is. |
| 338 | */ |
Bartlomiej Zolnierkiewicz | cd36bee | 2007-01-05 16:36:21 -0800 | [diff] [blame] | 339 | vdev->via_config = via_config = via_config_find(&isa); |
Alan Cox | 23a1b2a | 2006-12-06 20:36:12 -0800 | [diff] [blame] | 340 | |
| 341 | /* We checked this earlier so if it fails here deeep badness |
| 342 | is involved */ |
| 343 | |
| 344 | BUG_ON(!via_config->id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 345 | |
| 346 | /* |
Bartlomiej Zolnierkiewicz | cd36bee | 2007-01-05 16:36:21 -0800 | [diff] [blame] | 347 | * Detect cable and configure Clk66 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | */ |
Bartlomiej Zolnierkiewicz | cd36bee | 2007-01-05 16:36:21 -0800 | [diff] [blame] | 349 | pci_read_config_dword(dev, VIA_UDMA_TIMING, &u); |
| 350 | |
| 351 | via_cable_detect(vdev, u); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | |
Daniel Drake | 7462cbf | 2005-11-18 22:09:45 +0100 | [diff] [blame] | 353 | if ((via_config->flags & VIA_UDMA) == VIA_UDMA_66) { |
| 354 | /* Enable Clk66 */ |
Daniel Drake | 7462cbf | 2005-11-18 22:09:45 +0100 | [diff] [blame] | 355 | pci_write_config_dword(dev, VIA_UDMA_TIMING, u|0x80008); |
| 356 | } else if (via_config->flags & VIA_BAD_CLK66) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | /* Would cause trouble on 596a and 686 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | pci_write_config_dword(dev, VIA_UDMA_TIMING, u & ~0x80008); |
| 359 | } |
| 360 | |
| 361 | /* |
| 362 | * Check whether interfaces are enabled. |
| 363 | */ |
| 364 | |
| 365 | pci_read_config_byte(dev, VIA_IDE_ENABLE, &v); |
| 366 | |
| 367 | /* |
| 368 | * Set up FIFO sizes and thresholds. |
| 369 | */ |
| 370 | |
| 371 | pci_read_config_byte(dev, VIA_FIFO_CONFIG, &t); |
| 372 | |
| 373 | /* Disable PREQ# till DDACK# */ |
| 374 | if (via_config->flags & VIA_BAD_PREQ) { |
| 375 | /* Would crash on 586b rev 41 */ |
| 376 | t &= 0x7f; |
| 377 | } |
| 378 | |
| 379 | /* Fix FIFO split between channels */ |
| 380 | if (via_config->flags & VIA_SET_FIFO) { |
| 381 | t &= (t & 0x9f); |
| 382 | switch (v & 3) { |
| 383 | case 2: t |= 0x00; break; /* 16 on primary */ |
| 384 | case 1: t |= 0x60; break; /* 16 on secondary */ |
| 385 | case 3: t |= 0x20; break; /* 8 pri 8 sec */ |
| 386 | } |
| 387 | } |
| 388 | |
| 389 | pci_write_config_byte(dev, VIA_FIFO_CONFIG, t); |
| 390 | |
| 391 | /* |
| 392 | * Determine system bus clock. |
| 393 | */ |
| 394 | |
| 395 | via_clock = system_bus_clock() * 1000; |
| 396 | |
| 397 | switch (via_clock) { |
| 398 | case 33000: via_clock = 33333; break; |
| 399 | case 37000: via_clock = 37500; break; |
| 400 | case 41000: via_clock = 41666; break; |
| 401 | } |
| 402 | |
| 403 | if (via_clock < 20000 || via_clock > 50000) { |
| 404 | printk(KERN_WARNING "VP_IDE: User given PCI clock speed " |
| 405 | "impossible (%d), using 33 MHz instead.\n", via_clock); |
| 406 | printk(KERN_WARNING "VP_IDE: Use ide0=ata66 if you want " |
| 407 | "to assume 80-wire cable.\n"); |
| 408 | via_clock = 33333; |
| 409 | } |
| 410 | |
| 411 | /* |
| 412 | * Print the boot message. |
| 413 | */ |
| 414 | |
| 415 | pci_read_config_byte(isa, PCI_REVISION_ID, &t); |
| 416 | printk(KERN_INFO "VP_IDE: VIA %s (rev %02x) IDE %s " |
| 417 | "controller on pci%s\n", |
| 418 | via_config->name, t, |
| 419 | via_dma[via_config->flags & VIA_UDMA], |
| 420 | pci_name(dev)); |
| 421 | |
Alan Cox | 652aa16 | 2006-10-03 01:14:35 -0700 | [diff] [blame] | 422 | pci_dev_put(isa); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | return 0; |
| 424 | } |
| 425 | |
Herbert Xu | f3718d3 | 2005-07-03 16:42:18 +0200 | [diff] [blame] | 426 | static void __devinit init_hwif_via82cxxx(ide_hwif_t *hwif) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | { |
Bartlomiej Zolnierkiewicz | cd36bee | 2007-01-05 16:36:21 -0800 | [diff] [blame] | 428 | struct via82cxxx_dev *vdev = pci_get_drvdata(hwif->pci_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 429 | int i; |
| 430 | |
| 431 | hwif->autodma = 0; |
| 432 | |
| 433 | hwif->tuneproc = &via82cxxx_tune_drive; |
| 434 | hwif->speedproc = &via_set_drive; |
| 435 | |
| 436 | |
Sascha Hauer | 74a9d5f | 2006-11-03 09:52:49 +0100 | [diff] [blame] | 437 | #ifdef CONFIG_PPC_CHRP |
Benjamin Herrenschmidt | e822250 | 2006-03-28 23:15:54 +1100 | [diff] [blame] | 438 | if(machine_is(chrp) && _chrp_type == _CHRP_Pegasos) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | hwif->irq = hwif->channel ? 15 : 14; |
| 440 | } |
| 441 | #endif |
| 442 | |
| 443 | for (i = 0; i < 2; i++) { |
| 444 | hwif->drives[i].io_32bit = 1; |
Daniel Drake | 7462cbf | 2005-11-18 22:09:45 +0100 | [diff] [blame] | 445 | hwif->drives[i].unmask = (vdev->via_config->flags & VIA_NO_UNMASK) ? 0 : 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | hwif->drives[i].autotune = 1; |
| 447 | hwif->drives[i].dn = hwif->channel * 2 + i; |
| 448 | } |
| 449 | |
| 450 | if (!hwif->dma_base) |
| 451 | return; |
| 452 | |
| 453 | hwif->atapi_dma = 1; |
| 454 | hwif->ultra_mask = 0x7f; |
| 455 | hwif->mwdma_mask = 0x07; |
| 456 | hwif->swdma_mask = 0x07; |
| 457 | |
| 458 | if (!hwif->udma_four) |
Daniel Drake | 7462cbf | 2005-11-18 22:09:45 +0100 | [diff] [blame] | 459 | hwif->udma_four = (vdev->via_80w >> hwif->channel) & 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | hwif->ide_dma_check = &via82cxxx_ide_dma_check; |
| 461 | if (!noautodma) |
| 462 | hwif->autodma = 1; |
| 463 | hwif->drives[0].autodma = hwif->autodma; |
| 464 | hwif->drives[1].autodma = hwif->autodma; |
| 465 | } |
| 466 | |
Mathias Kretschmer | 4f1d774 | 2005-11-19 21:32:38 +0100 | [diff] [blame] | 467 | static ide_pci_device_t via82cxxx_chipsets[] __devinitdata = { |
| 468 | { /* 0 */ |
| 469 | .name = "VP_IDE", |
| 470 | .init_chipset = init_chipset_via82cxxx, |
| 471 | .init_hwif = init_hwif_via82cxxx, |
| 472 | .channels = 2, |
| 473 | .autodma = NOAUTODMA, |
| 474 | .enablebits = {{0x40,0x02,0x02}, {0x40,0x01,0x01}}, |
| 475 | .bootable = ON_BOARD |
| 476 | },{ /* 1 */ |
| 477 | .name = "VP_IDE", |
| 478 | .init_chipset = init_chipset_via82cxxx, |
| 479 | .init_hwif = init_hwif_via82cxxx, |
| 480 | .channels = 2, |
| 481 | .autodma = AUTODMA, |
| 482 | .enablebits = {{0x00,0x00,0x00}, {0x00,0x00,0x00}}, |
| 483 | .bootable = ON_BOARD, |
| 484 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | }; |
| 486 | |
| 487 | static int __devinit via_init_one(struct pci_dev *dev, const struct pci_device_id *id) |
| 488 | { |
Alan Cox | 23a1b2a | 2006-12-06 20:36:12 -0800 | [diff] [blame] | 489 | struct pci_dev *isa = NULL; |
| 490 | struct via_isa_bridge *via_config; |
| 491 | /* |
| 492 | * Find the ISA bridge and check we know what it is. |
| 493 | */ |
| 494 | via_config = via_config_find(&isa); |
| 495 | pci_dev_put(isa); |
| 496 | if (!via_config->id) { |
| 497 | printk(KERN_WARNING "VP_IDE: Unknown VIA SouthBridge, disabling DMA.\n"); |
| 498 | return -ENODEV; |
| 499 | } |
Mathias Kretschmer | 4f1d774 | 2005-11-19 21:32:38 +0100 | [diff] [blame] | 500 | return ide_setup_pci_device(dev, &via82cxxx_chipsets[id->driver_data]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 501 | } |
| 502 | |
| 503 | static struct pci_device_id via_pci_tbl[] = { |
| 504 | { PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C576_1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, |
| 505 | { PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, |
Mathias Kretschmer | 4f1d774 | 2005-11-19 21:32:38 +0100 | [diff] [blame] | 506 | { PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_6410, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1}, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | { 0, }, |
| 508 | }; |
| 509 | MODULE_DEVICE_TABLE(pci, via_pci_tbl); |
| 510 | |
| 511 | static struct pci_driver driver = { |
| 512 | .name = "VIA_IDE", |
| 513 | .id_table = via_pci_tbl, |
| 514 | .probe = via_init_one, |
| 515 | }; |
| 516 | |
Bartlomiej Zolnierkiewicz | 82ab1ee | 2007-01-27 13:46:56 +0100 | [diff] [blame^] | 517 | static int __init via_ide_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 518 | { |
| 519 | return ide_pci_register_driver(&driver); |
| 520 | } |
| 521 | |
| 522 | module_init(via_ide_init); |
| 523 | |
| 524 | MODULE_AUTHOR("Vojtech Pavlik, Michel Aubry, Jeff Garzik, Andre Hedrick"); |
| 525 | MODULE_DESCRIPTION("PCI driver module for VIA IDE"); |
| 526 | MODULE_LICENSE("GPL"); |