Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | * VIA IDE driver for Linux. Supported southbridges: |
| 3 | * |
| 4 | * vt82c576, vt82c586, vt82c586a, vt82c586b, vt82c596a, vt82c596b, |
| 5 | * vt82c686, vt82c686a, vt82c686b, vt8231, vt8233, vt8233c, vt8233a, |
Alan Cox | a7dec1e | 2006-08-30 19:14:25 +0100 | [diff] [blame] | 6 | * vt8235, vt8237, vt8237a |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * |
| 8 | * Copyright (c) 2000-2002 Vojtech Pavlik |
Bartlomiej Zolnierkiewicz | 75b1d97 | 2007-07-09 23:17:57 +0200 | [diff] [blame] | 9 | * Copyright (c) 2007 Bartlomiej Zolnierkiewicz |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | * |
| 11 | * Based on the work of: |
| 12 | * Michel Aubry |
| 13 | * Jeff Garzik |
| 14 | * Andre Hedrick |
| 15 | * |
| 16 | * Documentation: |
| 17 | * Obsolete device documentation publically available from via.com.tw |
| 18 | * Current device documentation available under NDA only |
| 19 | */ |
| 20 | |
| 21 | /* |
| 22 | * This program is free software; you can redistribute it and/or modify it |
| 23 | * under the terms of the GNU General Public License version 2 as published by |
| 24 | * the Free Software Foundation. |
| 25 | */ |
| 26 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | #include <linux/module.h> |
| 28 | #include <linux/kernel.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | #include <linux/pci.h> |
| 30 | #include <linux/init.h> |
| 31 | #include <linux/ide.h> |
Bartlomiej Zolnierkiewicz | bdab00b | 2007-07-09 23:17:58 +0200 | [diff] [blame] | 32 | #include <linux/dmi.h> |
| 33 | |
Sascha Hauer | 74a9d5f | 2006-11-03 09:52:49 +0100 | [diff] [blame] | 34 | #ifdef CONFIG_PPC_CHRP |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | #include <asm/processor.h> |
| 36 | #endif |
| 37 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | #define VIA_IDE_ENABLE 0x40 |
| 39 | #define VIA_IDE_CONFIG 0x41 |
| 40 | #define VIA_FIFO_CONFIG 0x43 |
| 41 | #define VIA_MISC_1 0x44 |
| 42 | #define VIA_MISC_2 0x45 |
| 43 | #define VIA_MISC_3 0x46 |
| 44 | #define VIA_DRIVE_TIMING 0x48 |
| 45 | #define VIA_8BIT_TIMING 0x4e |
| 46 | #define VIA_ADDRESS_SETUP 0x4c |
| 47 | #define VIA_UDMA_TIMING 0x50 |
| 48 | |
Bartlomiej Zolnierkiewicz | 75b1d97 | 2007-07-09 23:17:57 +0200 | [diff] [blame] | 49 | #define VIA_BAD_PREQ 0x01 /* Crashes if PREQ# till DDACK# set */ |
| 50 | #define VIA_BAD_CLK66 0x02 /* 66 MHz clock doesn't work correctly */ |
| 51 | #define VIA_SET_FIFO 0x04 /* Needs to have FIFO split set */ |
| 52 | #define VIA_NO_UNMASK 0x08 /* Doesn't work with IRQ unmasking on */ |
| 53 | #define VIA_BAD_ID 0x10 /* Has wrong vendor ID (0x1107) */ |
| 54 | #define VIA_BAD_AST 0x20 /* Don't touch Address Setup Timing */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | |
| 56 | /* |
| 57 | * VIA SouthBridge chips. |
| 58 | */ |
| 59 | |
| 60 | static struct via_isa_bridge { |
| 61 | char *name; |
| 62 | u16 id; |
| 63 | u8 rev_min; |
| 64 | u8 rev_max; |
Bartlomiej Zolnierkiewicz | 75b1d97 | 2007-07-09 23:17:57 +0200 | [diff] [blame] | 65 | u8 udma_mask; |
| 66 | u8 flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | } via_isa_bridges[] = { |
Joseph Chan | b311ec4 | 2007-09-10 22:06:01 -0400 | [diff] [blame] | 68 | { "vx800", PCI_DEVICE_ID_VIA_VX800, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST }, |
Bartlomiej Zolnierkiewicz | 75b1d97 | 2007-07-09 23:17:57 +0200 | [diff] [blame] | 69 | { "cx700", PCI_DEVICE_ID_VIA_CX700, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST }, |
| 70 | { "vt8237s", PCI_DEVICE_ID_VIA_8237S, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST }, |
| 71 | { "vt6410", PCI_DEVICE_ID_VIA_6410, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST }, |
| 72 | { "vt8251", PCI_DEVICE_ID_VIA_8251, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST }, |
| 73 | { "vt8237", PCI_DEVICE_ID_VIA_8237, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST }, |
| 74 | { "vt8237a", PCI_DEVICE_ID_VIA_8237A, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST }, |
| 75 | { "vt8235", PCI_DEVICE_ID_VIA_8235, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST }, |
| 76 | { "vt8233a", PCI_DEVICE_ID_VIA_8233A, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST }, |
| 77 | { "vt8233c", PCI_DEVICE_ID_VIA_8233C_0, 0x00, 0x2f, ATA_UDMA5, }, |
| 78 | { "vt8233", PCI_DEVICE_ID_VIA_8233_0, 0x00, 0x2f, ATA_UDMA5, }, |
| 79 | { "vt8231", PCI_DEVICE_ID_VIA_8231, 0x00, 0x2f, ATA_UDMA5, }, |
| 80 | { "vt82c686b", PCI_DEVICE_ID_VIA_82C686, 0x40, 0x4f, ATA_UDMA5, }, |
| 81 | { "vt82c686a", PCI_DEVICE_ID_VIA_82C686, 0x10, 0x2f, ATA_UDMA4, }, |
| 82 | { "vt82c686", PCI_DEVICE_ID_VIA_82C686, 0x00, 0x0f, ATA_UDMA2, VIA_BAD_CLK66 }, |
| 83 | { "vt82c596b", PCI_DEVICE_ID_VIA_82C596, 0x10, 0x2f, ATA_UDMA4, }, |
| 84 | { "vt82c596a", PCI_DEVICE_ID_VIA_82C596, 0x00, 0x0f, ATA_UDMA2, VIA_BAD_CLK66 }, |
| 85 | { "vt82c586b", PCI_DEVICE_ID_VIA_82C586_0, 0x47, 0x4f, ATA_UDMA2, VIA_SET_FIFO }, |
| 86 | { "vt82c586b", PCI_DEVICE_ID_VIA_82C586_0, 0x40, 0x46, ATA_UDMA2, VIA_SET_FIFO | VIA_BAD_PREQ }, |
| 87 | { "vt82c586b", PCI_DEVICE_ID_VIA_82C586_0, 0x30, 0x3f, ATA_UDMA2, VIA_SET_FIFO }, |
| 88 | { "vt82c586a", PCI_DEVICE_ID_VIA_82C586_0, 0x20, 0x2f, ATA_UDMA2, VIA_SET_FIFO }, |
| 89 | { "vt82c586", PCI_DEVICE_ID_VIA_82C586_0, 0x00, 0x0f, 0x00, VIA_SET_FIFO }, |
| 90 | { "vt82c576", PCI_DEVICE_ID_VIA_82C576, 0x00, 0x2f, 0x00, VIA_SET_FIFO | VIA_NO_UNMASK }, |
| 91 | { "vt82c576", PCI_DEVICE_ID_VIA_82C576, 0x00, 0x2f, 0x00, VIA_SET_FIFO | VIA_NO_UNMASK | VIA_BAD_ID }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | { NULL } |
| 93 | }; |
| 94 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | static unsigned int via_clock; |
Bartlomiej Zolnierkiewicz | 75b1d97 | 2007-07-09 23:17:57 +0200 | [diff] [blame] | 96 | static char *via_dma[] = { "16", "25", "33", "44", "66", "100", "133" }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | |
Daniel Drake | 7462cbf | 2005-11-18 22:09:45 +0100 | [diff] [blame] | 98 | struct via82cxxx_dev |
| 99 | { |
| 100 | struct via_isa_bridge *via_config; |
| 101 | unsigned int via_80w; |
| 102 | }; |
| 103 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | /** |
| 105 | * via_set_speed - write timing registers |
| 106 | * @dev: PCI device |
| 107 | * @dn: device |
| 108 | * @timing: IDE timing data to use |
| 109 | * |
| 110 | * via_set_speed writes timing values to the chipset registers |
| 111 | */ |
| 112 | |
Daniel Drake | 7462cbf | 2005-11-18 22:09:45 +0100 | [diff] [blame] | 113 | 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] | 114 | { |
Bartlomiej Zolnierkiewicz | 3650165 | 2008-02-01 23:09:31 +0100 | [diff] [blame] | 115 | struct pci_dev *dev = to_pci_dev(hwif->dev); |
| 116 | struct via82cxxx_dev *vdev = pci_get_drvdata(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | u8 t; |
| 118 | |
Daniel Drake | 7462cbf | 2005-11-18 22:09:45 +0100 | [diff] [blame] | 119 | if (~vdev->via_config->flags & VIA_BAD_AST) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | pci_read_config_byte(dev, VIA_ADDRESS_SETUP, &t); |
Harvey Harrison | d6cddd3 | 2008-07-15 21:21:41 +0200 | [diff] [blame] | 121 | t = (t & ~(3 << ((3 - dn) << 1))) | ((clamp_val(timing->setup, 1, 4) - 1) << ((3 - dn) << 1)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | pci_write_config_byte(dev, VIA_ADDRESS_SETUP, t); |
| 123 | } |
| 124 | |
| 125 | pci_write_config_byte(dev, VIA_8BIT_TIMING + (1 - (dn >> 1)), |
Harvey Harrison | d6cddd3 | 2008-07-15 21:21:41 +0200 | [diff] [blame] | 126 | ((clamp_val(timing->act8b, 1, 16) - 1) << 4) | (clamp_val(timing->rec8b, 1, 16) - 1)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | |
| 128 | pci_write_config_byte(dev, VIA_DRIVE_TIMING + (3 - dn), |
Harvey Harrison | d6cddd3 | 2008-07-15 21:21:41 +0200 | [diff] [blame] | 129 | ((clamp_val(timing->active, 1, 16) - 1) << 4) | (clamp_val(timing->recover, 1, 16) - 1)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | |
Bartlomiej Zolnierkiewicz | 75b1d97 | 2007-07-09 23:17:57 +0200 | [diff] [blame] | 131 | switch (vdev->via_config->udma_mask) { |
Harvey Harrison | d6cddd3 | 2008-07-15 21:21:41 +0200 | [diff] [blame] | 132 | case ATA_UDMA2: t = timing->udma ? (0xe0 | (clamp_val(timing->udma, 2, 5) - 2)) : 0x03; break; |
| 133 | case ATA_UDMA4: t = timing->udma ? (0xe8 | (clamp_val(timing->udma, 2, 9) - 2)) : 0x0f; break; |
| 134 | case ATA_UDMA5: t = timing->udma ? (0xe0 | (clamp_val(timing->udma, 2, 9) - 2)) : 0x07; break; |
| 135 | case ATA_UDMA6: t = timing->udma ? (0xe0 | (clamp_val(timing->udma, 2, 9) - 2)) : 0x07; break; |
Bartlomiej Zolnierkiewicz | 75b1d97 | 2007-07-09 23:17:57 +0200 | [diff] [blame] | 136 | default: return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | } |
| 138 | |
| 139 | pci_write_config_byte(dev, VIA_UDMA_TIMING + (3 - dn), t); |
| 140 | } |
| 141 | |
| 142 | /** |
| 143 | * via_set_drive - configure transfer mode |
| 144 | * @drive: Drive to set up |
| 145 | * @speed: desired speed |
| 146 | * |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 147 | * via_set_drive() computes timing values configures the chipset to |
| 148 | * a desired transfer mode. It also can be called by upper layers. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | */ |
| 150 | |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 151 | static void via_set_drive(ide_drive_t *drive, const u8 speed) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | { |
Bartlomiej Zolnierkiewicz | 3650165 | 2008-02-01 23:09:31 +0100 | [diff] [blame] | 153 | ide_hwif_t *hwif = drive->hwif; |
| 154 | ide_drive_t *peer = hwif->drives + (~drive->dn & 1); |
| 155 | struct pci_dev *dev = to_pci_dev(hwif->dev); |
| 156 | struct via82cxxx_dev *vdev = pci_get_drvdata(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | struct ide_timing t, p; |
| 158 | unsigned int T, UT; |
| 159 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | T = 1000000000 / via_clock; |
| 161 | |
Bartlomiej Zolnierkiewicz | 75b1d97 | 2007-07-09 23:17:57 +0200 | [diff] [blame] | 162 | switch (vdev->via_config->udma_mask) { |
| 163 | case ATA_UDMA2: UT = T; break; |
| 164 | case ATA_UDMA4: UT = T/2; break; |
| 165 | case ATA_UDMA5: UT = T/3; break; |
| 166 | case ATA_UDMA6: UT = T/4; break; |
| 167 | default: UT = T; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | } |
| 169 | |
| 170 | ide_timing_compute(drive, speed, &t, T, UT); |
| 171 | |
| 172 | if (peer->present) { |
| 173 | ide_timing_compute(peer, peer->current_speed, &p, T, UT); |
| 174 | ide_timing_merge(&p, &t, &t, IDE_TIMING_8BIT); |
| 175 | } |
| 176 | |
Daniel Drake | 7462cbf | 2005-11-18 22:09:45 +0100 | [diff] [blame] | 177 | via_set_speed(HWIF(drive), drive->dn, &t); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | } |
| 179 | |
| 180 | /** |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 181 | * via_set_pio_mode - set host controller for PIO mode |
Bartlomiej Zolnierkiewicz | 26bcb87 | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 182 | * @drive: drive |
| 183 | * @pio: PIO mode number |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | * |
| 185 | * A callback from the upper layers for PIO-only tuning. |
| 186 | */ |
| 187 | |
Bartlomiej Zolnierkiewicz | 26bcb87 | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 188 | static void via_set_pio_mode(ide_drive_t *drive, const u8 pio) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | { |
Bartlomiej Zolnierkiewicz | 26bcb87 | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 190 | via_set_drive(drive, XFER_PIO_0 + pio); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | } |
| 192 | |
Daniel Drake | 7462cbf | 2005-11-18 22:09:45 +0100 | [diff] [blame] | 193 | static struct via_isa_bridge *via_config_find(struct pci_dev **isa) |
| 194 | { |
| 195 | struct via_isa_bridge *via_config; |
Daniel Drake | 7462cbf | 2005-11-18 22:09:45 +0100 | [diff] [blame] | 196 | |
| 197 | for (via_config = via_isa_bridges; via_config->id; via_config++) |
Alan Cox | 652aa16 | 2006-10-03 01:14:35 -0700 | [diff] [blame] | 198 | if ((*isa = pci_get_device(PCI_VENDOR_ID_VIA + |
Daniel Drake | 7462cbf | 2005-11-18 22:09:45 +0100 | [diff] [blame] | 199 | !!(via_config->flags & VIA_BAD_ID), |
| 200 | via_config->id, NULL))) { |
| 201 | |
Auke Kok | 44c1013 | 2007-06-08 15:46:36 -0700 | [diff] [blame] | 202 | if ((*isa)->revision >= via_config->rev_min && |
| 203 | (*isa)->revision <= via_config->rev_max) |
Daniel Drake | 7462cbf | 2005-11-18 22:09:45 +0100 | [diff] [blame] | 204 | break; |
Alan Cox | 652aa16 | 2006-10-03 01:14:35 -0700 | [diff] [blame] | 205 | pci_dev_put(*isa); |
Daniel Drake | 7462cbf | 2005-11-18 22:09:45 +0100 | [diff] [blame] | 206 | } |
| 207 | |
| 208 | return via_config; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | } |
| 210 | |
Bartlomiej Zolnierkiewicz | cd36bee | 2007-01-05 16:36:21 -0800 | [diff] [blame] | 211 | /* |
| 212 | * Check and handle 80-wire cable presence |
| 213 | */ |
| 214 | static void __devinit via_cable_detect(struct via82cxxx_dev *vdev, u32 u) |
| 215 | { |
| 216 | int i; |
| 217 | |
Bartlomiej Zolnierkiewicz | 75b1d97 | 2007-07-09 23:17:57 +0200 | [diff] [blame] | 218 | switch (vdev->via_config->udma_mask) { |
| 219 | case ATA_UDMA4: |
Bartlomiej Zolnierkiewicz | cd36bee | 2007-01-05 16:36:21 -0800 | [diff] [blame] | 220 | for (i = 24; i >= 0; i -= 8) |
| 221 | if (((u >> (i & 16)) & 8) && |
| 222 | ((u >> i) & 0x20) && |
| 223 | (((u >> i) & 7) < 2)) { |
| 224 | /* |
| 225 | * 2x PCI clock and |
| 226 | * UDMA w/ < 3T/cycle |
| 227 | */ |
| 228 | vdev->via_80w |= (1 << (1 - (i >> 4))); |
| 229 | } |
| 230 | break; |
| 231 | |
Bartlomiej Zolnierkiewicz | 75b1d97 | 2007-07-09 23:17:57 +0200 | [diff] [blame] | 232 | case ATA_UDMA5: |
Bartlomiej Zolnierkiewicz | cd36bee | 2007-01-05 16:36:21 -0800 | [diff] [blame] | 233 | for (i = 24; i >= 0; i -= 8) |
| 234 | if (((u >> i) & 0x10) || |
| 235 | (((u >> i) & 0x20) && |
| 236 | (((u >> i) & 7) < 4))) { |
| 237 | /* BIOS 80-wire bit or |
| 238 | * UDMA w/ < 60ns/cycle |
| 239 | */ |
| 240 | vdev->via_80w |= (1 << (1 - (i >> 4))); |
| 241 | } |
| 242 | break; |
| 243 | |
Bartlomiej Zolnierkiewicz | 75b1d97 | 2007-07-09 23:17:57 +0200 | [diff] [blame] | 244 | case ATA_UDMA6: |
Bartlomiej Zolnierkiewicz | cd36bee | 2007-01-05 16:36:21 -0800 | [diff] [blame] | 245 | for (i = 24; i >= 0; i -= 8) |
| 246 | if (((u >> i) & 0x10) || |
| 247 | (((u >> i) & 0x20) && |
| 248 | (((u >> i) & 7) < 6))) { |
| 249 | /* BIOS 80-wire bit or |
| 250 | * UDMA w/ < 60ns/cycle |
| 251 | */ |
| 252 | vdev->via_80w |= (1 << (1 - (i >> 4))); |
| 253 | } |
| 254 | break; |
| 255 | } |
| 256 | } |
| 257 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | /** |
| 259 | * init_chipset_via82cxxx - initialization handler |
| 260 | * @dev: PCI device |
| 261 | * @name: Name of interface |
| 262 | * |
| 263 | * The initialization callback. Here we determine the IDE chip type |
| 264 | * and initialize its drive independent registers. |
| 265 | */ |
| 266 | |
Herbert Xu | f3718d3 | 2005-07-03 16:42:18 +0200 | [diff] [blame] | 267 | 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] | 268 | { |
| 269 | struct pci_dev *isa = NULL; |
Bartlomiej Zolnierkiewicz | cd36bee | 2007-01-05 16:36:21 -0800 | [diff] [blame] | 270 | struct via82cxxx_dev *vdev; |
Daniel Drake | 7462cbf | 2005-11-18 22:09:45 +0100 | [diff] [blame] | 271 | struct via_isa_bridge *via_config; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | u8 t, v; |
Bartlomiej Zolnierkiewicz | cd36bee | 2007-01-05 16:36:21 -0800 | [diff] [blame] | 273 | u32 u; |
| 274 | |
| 275 | vdev = kzalloc(sizeof(*vdev), GFP_KERNEL); |
| 276 | if (!vdev) { |
| 277 | printk(KERN_ERR "VP_IDE: out of memory :(\n"); |
| 278 | return -ENOMEM; |
| 279 | } |
| 280 | pci_set_drvdata(dev, vdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | |
| 282 | /* |
| 283 | * Find the ISA bridge to see how good the IDE is. |
| 284 | */ |
Bartlomiej Zolnierkiewicz | cd36bee | 2007-01-05 16:36:21 -0800 | [diff] [blame] | 285 | vdev->via_config = via_config = via_config_find(&isa); |
Alan Cox | 23a1b2a | 2006-12-06 20:36:12 -0800 | [diff] [blame] | 286 | |
| 287 | /* We checked this earlier so if it fails here deeep badness |
| 288 | is involved */ |
| 289 | |
| 290 | BUG_ON(!via_config->id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | |
| 292 | /* |
Bartlomiej Zolnierkiewicz | cd36bee | 2007-01-05 16:36:21 -0800 | [diff] [blame] | 293 | * Detect cable and configure Clk66 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 294 | */ |
Bartlomiej Zolnierkiewicz | cd36bee | 2007-01-05 16:36:21 -0800 | [diff] [blame] | 295 | pci_read_config_dword(dev, VIA_UDMA_TIMING, &u); |
| 296 | |
| 297 | via_cable_detect(vdev, u); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | |
Bartlomiej Zolnierkiewicz | 75b1d97 | 2007-07-09 23:17:57 +0200 | [diff] [blame] | 299 | if (via_config->udma_mask == ATA_UDMA4) { |
Daniel Drake | 7462cbf | 2005-11-18 22:09:45 +0100 | [diff] [blame] | 300 | /* Enable Clk66 */ |
Daniel Drake | 7462cbf | 2005-11-18 22:09:45 +0100 | [diff] [blame] | 301 | pci_write_config_dword(dev, VIA_UDMA_TIMING, u|0x80008); |
| 302 | } else if (via_config->flags & VIA_BAD_CLK66) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | /* Would cause trouble on 596a and 686 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | pci_write_config_dword(dev, VIA_UDMA_TIMING, u & ~0x80008); |
| 305 | } |
| 306 | |
| 307 | /* |
| 308 | * Check whether interfaces are enabled. |
| 309 | */ |
| 310 | |
| 311 | pci_read_config_byte(dev, VIA_IDE_ENABLE, &v); |
| 312 | |
| 313 | /* |
| 314 | * Set up FIFO sizes and thresholds. |
| 315 | */ |
| 316 | |
| 317 | pci_read_config_byte(dev, VIA_FIFO_CONFIG, &t); |
| 318 | |
| 319 | /* Disable PREQ# till DDACK# */ |
| 320 | if (via_config->flags & VIA_BAD_PREQ) { |
| 321 | /* Would crash on 586b rev 41 */ |
| 322 | t &= 0x7f; |
| 323 | } |
| 324 | |
| 325 | /* Fix FIFO split between channels */ |
| 326 | if (via_config->flags & VIA_SET_FIFO) { |
| 327 | t &= (t & 0x9f); |
| 328 | switch (v & 3) { |
| 329 | case 2: t |= 0x00; break; /* 16 on primary */ |
| 330 | case 1: t |= 0x60; break; /* 16 on secondary */ |
| 331 | case 3: t |= 0x20; break; /* 8 pri 8 sec */ |
| 332 | } |
| 333 | } |
| 334 | |
| 335 | pci_write_config_byte(dev, VIA_FIFO_CONFIG, t); |
| 336 | |
| 337 | /* |
| 338 | * Determine system bus clock. |
| 339 | */ |
| 340 | |
Bartlomiej Zolnierkiewicz | 30e5ee4 | 2008-07-15 21:21:46 +0200 | [diff] [blame] | 341 | via_clock = (ide_pci_clk ? ide_pci_clk : 33) * 1000; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | |
| 343 | switch (via_clock) { |
| 344 | case 33000: via_clock = 33333; break; |
| 345 | case 37000: via_clock = 37500; break; |
| 346 | case 41000: via_clock = 41666; break; |
| 347 | } |
| 348 | |
| 349 | if (via_clock < 20000 || via_clock > 50000) { |
| 350 | printk(KERN_WARNING "VP_IDE: User given PCI clock speed " |
| 351 | "impossible (%d), using 33 MHz instead.\n", via_clock); |
| 352 | printk(KERN_WARNING "VP_IDE: Use ide0=ata66 if you want " |
| 353 | "to assume 80-wire cable.\n"); |
| 354 | via_clock = 33333; |
| 355 | } |
| 356 | |
| 357 | /* |
| 358 | * Print the boot message. |
| 359 | */ |
| 360 | |
Bartlomiej Zolnierkiewicz | 75b1d97 | 2007-07-09 23:17:57 +0200 | [diff] [blame] | 361 | printk(KERN_INFO "VP_IDE: VIA %s (rev %02x) IDE %sDMA%s " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | "controller on pci%s\n", |
Auke Kok | 44c1013 | 2007-06-08 15:46:36 -0700 | [diff] [blame] | 363 | via_config->name, isa->revision, |
Bartlomiej Zolnierkiewicz | 75b1d97 | 2007-07-09 23:17:57 +0200 | [diff] [blame] | 364 | via_config->udma_mask ? "U" : "MW", |
| 365 | via_dma[via_config->udma_mask ? |
| 366 | (fls(via_config->udma_mask) - 1) : 0], |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | pci_name(dev)); |
| 368 | |
Alan Cox | 652aa16 | 2006-10-03 01:14:35 -0700 | [diff] [blame] | 369 | pci_dev_put(isa); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | return 0; |
| 371 | } |
| 372 | |
Bartlomiej Zolnierkiewicz | bdab00b | 2007-07-09 23:17:58 +0200 | [diff] [blame] | 373 | /* |
| 374 | * Cable special cases |
| 375 | */ |
| 376 | |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 377 | static const struct dmi_system_id cable_dmi_table[] = { |
Bartlomiej Zolnierkiewicz | bdab00b | 2007-07-09 23:17:58 +0200 | [diff] [blame] | 378 | { |
| 379 | .ident = "Acer Ferrari 3400", |
| 380 | .matches = { |
| 381 | DMI_MATCH(DMI_BOARD_VENDOR, "Acer,Inc."), |
| 382 | DMI_MATCH(DMI_BOARD_NAME, "Ferrari 3400"), |
| 383 | }, |
| 384 | }, |
| 385 | { } |
| 386 | }; |
| 387 | |
Bartlomiej Zolnierkiewicz | 58e47bb | 2007-09-11 22:28:37 +0200 | [diff] [blame] | 388 | static int via_cable_override(struct pci_dev *pdev) |
Bartlomiej Zolnierkiewicz | bdab00b | 2007-07-09 23:17:58 +0200 | [diff] [blame] | 389 | { |
| 390 | /* Systems by DMI */ |
| 391 | if (dmi_check_system(cable_dmi_table)) |
| 392 | return 1; |
Bartlomiej Zolnierkiewicz | 58e47bb | 2007-09-11 22:28:37 +0200 | [diff] [blame] | 393 | |
| 394 | /* Arima W730-K8/Targa Visionary 811/... */ |
| 395 | if (pdev->subsystem_vendor == 0x161F && |
| 396 | pdev->subsystem_device == 0x2032) |
| 397 | return 1; |
| 398 | |
Bartlomiej Zolnierkiewicz | bdab00b | 2007-07-09 23:17:58 +0200 | [diff] [blame] | 399 | return 0; |
| 400 | } |
| 401 | |
| 402 | static u8 __devinit via82cxxx_cable_detect(ide_hwif_t *hwif) |
| 403 | { |
Bartlomiej Zolnierkiewicz | 3650165 | 2008-02-01 23:09:31 +0100 | [diff] [blame] | 404 | struct pci_dev *pdev = to_pci_dev(hwif->dev); |
Bartlomiej Zolnierkiewicz | 58e47bb | 2007-09-11 22:28:37 +0200 | [diff] [blame] | 405 | struct via82cxxx_dev *vdev = pci_get_drvdata(pdev); |
Bartlomiej Zolnierkiewicz | bdab00b | 2007-07-09 23:17:58 +0200 | [diff] [blame] | 406 | |
Bartlomiej Zolnierkiewicz | 58e47bb | 2007-09-11 22:28:37 +0200 | [diff] [blame] | 407 | if (via_cable_override(pdev)) |
Bartlomiej Zolnierkiewicz | bdab00b | 2007-07-09 23:17:58 +0200 | [diff] [blame] | 408 | return ATA_CBL_PATA40_SHORT; |
| 409 | |
| 410 | if ((vdev->via_80w >> hwif->channel) & 1) |
| 411 | return ATA_CBL_PATA80; |
| 412 | else |
| 413 | return ATA_CBL_PATA40; |
| 414 | } |
| 415 | |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 416 | static const struct ide_port_ops via_port_ops = { |
| 417 | .set_pio_mode = via_set_pio_mode, |
| 418 | .set_dma_mode = via_set_drive, |
| 419 | .cable_detect = via82cxxx_cable_detect, |
| 420 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | |
Bartlomiej Zolnierkiewicz | 8562043 | 2007-10-20 00:32:34 +0200 | [diff] [blame] | 422 | static const struct ide_port_info via82cxxx_chipset __devinitdata = { |
Bartlomiej Zolnierkiewicz | 6157332 | 2007-10-20 00:32:33 +0200 | [diff] [blame] | 423 | .name = "VP_IDE", |
| 424 | .init_chipset = init_chipset_via82cxxx, |
Bartlomiej Zolnierkiewicz | 6157332 | 2007-10-20 00:32:33 +0200 | [diff] [blame] | 425 | .enablebits = { { 0x40, 0x02, 0x02 }, { 0x40, 0x01, 0x01 } }, |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 426 | .port_ops = &via_port_ops, |
Bartlomiej Zolnierkiewicz | 6157332 | 2007-10-20 00:32:33 +0200 | [diff] [blame] | 427 | .host_flags = IDE_HFLAG_PIO_NO_BLACKLIST | |
Bartlomiej Zolnierkiewicz | 6157332 | 2007-10-20 00:32:33 +0200 | [diff] [blame] | 428 | IDE_HFLAG_POST_SET_MODE | |
Bartlomiej Zolnierkiewicz | 5e71d9c | 2008-04-26 17:36:35 +0200 | [diff] [blame] | 429 | IDE_HFLAG_IO_32BIT, |
Bartlomiej Zolnierkiewicz | 6157332 | 2007-10-20 00:32:33 +0200 | [diff] [blame] | 430 | .pio_mask = ATA_PIO5, |
| 431 | .swdma_mask = ATA_SWDMA2, |
| 432 | .mwdma_mask = ATA_MWDMA2, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 433 | }; |
| 434 | |
| 435 | static int __devinit via_init_one(struct pci_dev *dev, const struct pci_device_id *id) |
| 436 | { |
Alan Cox | 23a1b2a | 2006-12-06 20:36:12 -0800 | [diff] [blame] | 437 | struct pci_dev *isa = NULL; |
| 438 | struct via_isa_bridge *via_config; |
Bartlomiej Zolnierkiewicz | 6157332 | 2007-10-20 00:32:33 +0200 | [diff] [blame] | 439 | u8 idx = id->driver_data; |
Bartlomiej Zolnierkiewicz | 039788e | 2007-10-20 00:32:34 +0200 | [diff] [blame] | 440 | struct ide_port_info d; |
Bartlomiej Zolnierkiewicz | 6157332 | 2007-10-20 00:32:33 +0200 | [diff] [blame] | 441 | |
| 442 | d = via82cxxx_chipset; |
Bartlomiej Zolnierkiewicz | 8acf28c | 2007-10-20 00:32:30 +0200 | [diff] [blame] | 443 | |
Alan Cox | 23a1b2a | 2006-12-06 20:36:12 -0800 | [diff] [blame] | 444 | /* |
| 445 | * Find the ISA bridge and check we know what it is. |
| 446 | */ |
| 447 | via_config = via_config_find(&isa); |
| 448 | pci_dev_put(isa); |
| 449 | if (!via_config->id) { |
| 450 | printk(KERN_WARNING "VP_IDE: Unknown VIA SouthBridge, disabling DMA.\n"); |
| 451 | return -ENODEV; |
| 452 | } |
Bartlomiej Zolnierkiewicz | 8acf28c | 2007-10-20 00:32:30 +0200 | [diff] [blame] | 453 | |
Bartlomiej Zolnierkiewicz | 6157332 | 2007-10-20 00:32:33 +0200 | [diff] [blame] | 454 | if (idx == 0) |
| 455 | d.host_flags |= IDE_HFLAG_NO_AUTODMA; |
Bartlomiej Zolnierkiewicz | caea760 | 2007-10-20 00:32:30 +0200 | [diff] [blame] | 456 | else |
Bartlomiej Zolnierkiewicz | 6157332 | 2007-10-20 00:32:33 +0200 | [diff] [blame] | 457 | d.enablebits[1].reg = d.enablebits[0].reg = 0; |
| 458 | |
| 459 | if ((via_config->flags & VIA_NO_UNMASK) == 0) |
| 460 | d.host_flags |= IDE_HFLAG_UNMASK_IRQS; |
Bartlomiej Zolnierkiewicz | caea760 | 2007-10-20 00:32:30 +0200 | [diff] [blame] | 461 | |
Bartlomiej Zolnierkiewicz | 8acf28c | 2007-10-20 00:32:30 +0200 | [diff] [blame] | 462 | #ifdef CONFIG_PPC_CHRP |
| 463 | if (machine_is(chrp) && _chrp_type == _CHRP_Pegasos) |
Bartlomiej Zolnierkiewicz | 6157332 | 2007-10-20 00:32:33 +0200 | [diff] [blame] | 464 | d.host_flags |= IDE_HFLAG_FORCE_LEGACY_IRQS; |
Bartlomiej Zolnierkiewicz | 8acf28c | 2007-10-20 00:32:30 +0200 | [diff] [blame] | 465 | #endif |
| 466 | |
Bartlomiej Zolnierkiewicz | 6157332 | 2007-10-20 00:32:33 +0200 | [diff] [blame] | 467 | d.udma_mask = via_config->udma_mask; |
Bartlomiej Zolnierkiewicz | 8acf28c | 2007-10-20 00:32:30 +0200 | [diff] [blame] | 468 | |
Bartlomiej Zolnierkiewicz | 6cdf6eb | 2008-07-24 22:53:14 +0200 | [diff] [blame^] | 469 | return ide_pci_init_one(dev, &d, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | } |
| 471 | |
Bartlomiej Zolnierkiewicz | 9cbcc5e | 2007-10-16 22:29:56 +0200 | [diff] [blame] | 472 | static const struct pci_device_id via_pci_tbl[] = { |
| 473 | { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_82C576_1), 0 }, |
| 474 | { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_82C586_1), 0 }, |
Andrew Smith | 84f7e45 | 2008-02-19 01:41:26 +0100 | [diff] [blame] | 475 | { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_CX700_IDE), 0 }, |
Bartlomiej Zolnierkiewicz | 9cbcc5e | 2007-10-16 22:29:56 +0200 | [diff] [blame] | 476 | { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_6410), 1 }, |
| 477 | { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_SATA_EIDE), 1 }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | { 0, }, |
| 479 | }; |
| 480 | MODULE_DEVICE_TABLE(pci, via_pci_tbl); |
| 481 | |
| 482 | static struct pci_driver driver = { |
| 483 | .name = "VIA_IDE", |
| 484 | .id_table = via_pci_tbl, |
| 485 | .probe = via_init_one, |
| 486 | }; |
| 487 | |
Bartlomiej Zolnierkiewicz | 82ab1ee | 2007-01-27 13:46:56 +0100 | [diff] [blame] | 488 | static int __init via_ide_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 489 | { |
| 490 | return ide_pci_register_driver(&driver); |
| 491 | } |
| 492 | |
| 493 | module_init(via_ide_init); |
| 494 | |
| 495 | MODULE_AUTHOR("Vojtech Pavlik, Michel Aubry, Jeff Garzik, Andre Hedrick"); |
| 496 | MODULE_DESCRIPTION("PCI driver module for VIA IDE"); |
| 497 | MODULE_LICENSE("GPL"); |