Thomas Gleixner | d2912cb | 2019-06-04 10:11:33 +0200 | [diff] [blame^] | 1 | // SPDX-License-Identifier: GPL-2.0-only |
Jaya Kumar | f5b2d8b | 2005-11-09 23:58:16 +0100 | [diff] [blame] | 2 | /* |
Jaya Kumar | f5b2d8b | 2005-11-09 23:58:16 +0100 | [diff] [blame] | 3 | * Copyright (C) 2004-2005 Advanced Micro Devices, Inc. |
Bartlomiej Zolnierkiewicz | bc0b0b5 | 2007-08-01 23:46:45 +0200 | [diff] [blame] | 4 | * Copyright (C) 2007 Bartlomiej Zolnierkiewicz |
Jaya Kumar | f5b2d8b | 2005-11-09 23:58:16 +0100 | [diff] [blame] | 5 | * |
| 6 | * History: |
| 7 | * 09/20/2005 - Jaya Kumar <jayakumar.ide@gmail.com> |
| 8 | * - Reworked tuneproc, set_drive, misc mods to prep for mainline |
| 9 | * - Work was sponsored by CIS (M) Sdn Bhd. |
| 10 | * Ported to Kernel 2.6.11 on June 26, 2005 by |
| 11 | * Wolfgang Zuleger <wolfgang.zuleger@gmx.de> |
| 12 | * Alexander Kiausch <alex.kiausch@t-online.de> |
| 13 | * Originally developed by AMD for 2.4/2.6 |
| 14 | * |
| 15 | * Development of this chipset driver was funded |
| 16 | * by the nice folks at National Semiconductor/AMD. |
| 17 | * |
Jaya Kumar | f5b2d8b | 2005-11-09 23:58:16 +0100 | [diff] [blame] | 18 | * Documentation: |
| 19 | * CS5535 documentation available from AMD |
| 20 | */ |
| 21 | |
Jaya Kumar | f5b2d8b | 2005-11-09 23:58:16 +0100 | [diff] [blame] | 22 | #include <linux/module.h> |
| 23 | #include <linux/pci.h> |
| 24 | #include <linux/ide.h> |
| 25 | |
Bartlomiej Zolnierkiewicz | ced3ec8 | 2008-07-24 22:53:32 +0200 | [diff] [blame] | 26 | #define DRV_NAME "cs5535" |
| 27 | |
Jaya Kumar | f5b2d8b | 2005-11-09 23:58:16 +0100 | [diff] [blame] | 28 | #define MSR_ATAC_BASE 0x51300000 |
| 29 | #define ATAC_GLD_MSR_CAP (MSR_ATAC_BASE+0) |
| 30 | #define ATAC_GLD_MSR_CONFIG (MSR_ATAC_BASE+0x01) |
| 31 | #define ATAC_GLD_MSR_SMI (MSR_ATAC_BASE+0x02) |
| 32 | #define ATAC_GLD_MSR_ERROR (MSR_ATAC_BASE+0x03) |
| 33 | #define ATAC_GLD_MSR_PM (MSR_ATAC_BASE+0x04) |
| 34 | #define ATAC_GLD_MSR_DIAG (MSR_ATAC_BASE+0x05) |
| 35 | #define ATAC_IO_BAR (MSR_ATAC_BASE+0x08) |
| 36 | #define ATAC_RESET (MSR_ATAC_BASE+0x10) |
| 37 | #define ATAC_CH0D0_PIO (MSR_ATAC_BASE+0x20) |
| 38 | #define ATAC_CH0D0_DMA (MSR_ATAC_BASE+0x21) |
| 39 | #define ATAC_CH0D1_PIO (MSR_ATAC_BASE+0x22) |
| 40 | #define ATAC_CH0D1_DMA (MSR_ATAC_BASE+0x23) |
| 41 | #define ATAC_PCI_ABRTERR (MSR_ATAC_BASE+0x24) |
| 42 | #define ATAC_BM0_CMD_PRIM 0x00 |
| 43 | #define ATAC_BM0_STS_PRIM 0x02 |
| 44 | #define ATAC_BM0_PRD 0x04 |
| 45 | #define CS5535_CABLE_DETECT 0x48 |
| 46 | |
Joe Perches | a1c6d28 | 2007-12-24 15:23:42 +0100 | [diff] [blame] | 47 | /* Format I PIO settings. We separate out cmd and data for safer timings */ |
Jaya Kumar | f5b2d8b | 2005-11-09 23:58:16 +0100 | [diff] [blame] | 48 | |
| 49 | static unsigned int cs5535_pio_cmd_timings[5] = |
| 50 | { 0xF7F4, 0x53F3, 0x13F1, 0x5131, 0x1131 }; |
| 51 | static unsigned int cs5535_pio_dta_timings[5] = |
| 52 | { 0xF7F4, 0xF173, 0x8141, 0x5131, 0x1131 }; |
| 53 | |
| 54 | static unsigned int cs5535_mwdma_timings[3] = |
| 55 | { 0x7F0FFFF3, 0x7F035352, 0x7f024241 }; |
| 56 | |
| 57 | static unsigned int cs5535_udma_timings[5] = |
| 58 | { 0x7F7436A1, 0x7F733481, 0x7F723261, 0x7F713161, 0x7F703061 }; |
| 59 | |
| 60 | /* Macros to check if the register is the reset value - reset value is an |
| 61 | invalid timing and indicates the register has not been set previously */ |
| 62 | |
| 63 | #define CS5535_BAD_PIO(timings) ( (timings&~0x80000000UL) == 0x00009172 ) |
| 64 | #define CS5535_BAD_DMA(timings) ( (timings & 0x000FFFFF) == 0x00077771 ) |
| 65 | |
| 66 | /**** |
| 67 | * cs5535_set_speed - Configure the chipset to the new speed |
| 68 | * @drive: Drive to set up |
| 69 | * @speed: desired speed |
| 70 | * |
| 71 | * cs5535_set_speed() configures the chipset to a new speed. |
| 72 | */ |
Bartlomiej Zolnierkiewicz | f212ff2 | 2007-10-11 23:53:59 +0200 | [diff] [blame] | 73 | static void cs5535_set_speed(ide_drive_t *drive, const u8 speed) |
Jaya Kumar | f5b2d8b | 2005-11-09 23:58:16 +0100 | [diff] [blame] | 74 | { |
Jaya Kumar | f5b2d8b | 2005-11-09 23:58:16 +0100 | [diff] [blame] | 75 | u32 reg = 0, dummy; |
Bartlomiej Zolnierkiewicz | 123995b | 2008-10-13 21:39:40 +0200 | [diff] [blame] | 76 | u8 unit = drive->dn & 1; |
Jaya Kumar | f5b2d8b | 2005-11-09 23:58:16 +0100 | [diff] [blame] | 77 | |
Jaya Kumar | f5b2d8b | 2005-11-09 23:58:16 +0100 | [diff] [blame] | 78 | /* Set the PIO timings */ |
Bartlomiej Zolnierkiewicz | bd887f7 | 2008-07-16 20:33:36 +0200 | [diff] [blame] | 79 | if (speed < XFER_SW_DMA_0) { |
Bartlomiej Zolnierkiewicz | 7e59ea2 | 2008-10-10 22:39:26 +0200 | [diff] [blame] | 80 | ide_drive_t *pair = ide_get_pair_dev(drive); |
Bartlomiej Zolnierkiewicz | bc0b0b5 | 2007-08-01 23:46:45 +0200 | [diff] [blame] | 81 | u8 cmd, pioa; |
Jaya Kumar | f5b2d8b | 2005-11-09 23:58:16 +0100 | [diff] [blame] | 82 | |
Bartlomiej Zolnierkiewicz | bc0b0b5 | 2007-08-01 23:46:45 +0200 | [diff] [blame] | 83 | cmd = pioa = speed - XFER_PIO_0; |
| 84 | |
Bartlomiej Zolnierkiewicz | 7e59ea2 | 2008-10-10 22:39:26 +0200 | [diff] [blame] | 85 | if (pair) { |
Bartlomiej Zolnierkiewicz | a298dc0 | 2010-01-18 07:21:48 +0000 | [diff] [blame] | 86 | u8 piob = pair->pio_mode - XFER_PIO_0; |
Bartlomiej Zolnierkiewicz | bc0b0b5 | 2007-08-01 23:46:45 +0200 | [diff] [blame] | 87 | |
| 88 | if (piob < cmd) |
| 89 | cmd = piob; |
| 90 | } |
Jaya Kumar | f5b2d8b | 2005-11-09 23:58:16 +0100 | [diff] [blame] | 91 | |
| 92 | /* Write the speed of the current drive */ |
| 93 | reg = (cs5535_pio_cmd_timings[cmd] << 16) | |
| 94 | cs5535_pio_dta_timings[pioa]; |
| 95 | wrmsr(unit ? ATAC_CH0D1_PIO : ATAC_CH0D0_PIO, reg, 0); |
| 96 | |
| 97 | /* And if nessesary - change the speed of the other drive */ |
| 98 | rdmsr(unit ? ATAC_CH0D0_PIO : ATAC_CH0D1_PIO, reg, dummy); |
| 99 | |
| 100 | if (((reg >> 16) & cs5535_pio_cmd_timings[cmd]) != |
| 101 | cs5535_pio_cmd_timings[cmd]) { |
| 102 | reg &= 0x0000FFFF; |
| 103 | reg |= cs5535_pio_cmd_timings[cmd] << 16; |
| 104 | wrmsr(unit ? ATAC_CH0D0_PIO : ATAC_CH0D1_PIO, reg, 0); |
| 105 | } |
| 106 | |
| 107 | /* Set bit 31 of the DMA register for PIO format 1 timings */ |
| 108 | rdmsr(unit ? ATAC_CH0D1_DMA : ATAC_CH0D0_DMA, reg, dummy); |
| 109 | wrmsr(unit ? ATAC_CH0D1_DMA : ATAC_CH0D0_DMA, |
| 110 | reg | 0x80000000UL, 0); |
| 111 | } else { |
| 112 | rdmsr(unit ? ATAC_CH0D1_DMA : ATAC_CH0D0_DMA, reg, dummy); |
| 113 | |
| 114 | reg &= 0x80000000UL; /* Preserve the PIO format bit */ |
| 115 | |
Jordan Crouse | 32a70a8 | 2007-08-01 23:46:42 +0200 | [diff] [blame] | 116 | if (speed >= XFER_UDMA_0 && speed <= XFER_UDMA_4) |
Jaya Kumar | f5b2d8b | 2005-11-09 23:58:16 +0100 | [diff] [blame] | 117 | reg |= cs5535_udma_timings[speed - XFER_UDMA_0]; |
| 118 | else if (speed >= XFER_MW_DMA_0 && speed <= XFER_MW_DMA_2) |
| 119 | reg |= cs5535_mwdma_timings[speed - XFER_MW_DMA_0]; |
| 120 | else |
| 121 | return; |
| 122 | |
| 123 | wrmsr(unit ? ATAC_CH0D1_DMA : ATAC_CH0D0_DMA, reg, 0); |
| 124 | } |
| 125 | } |
| 126 | |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 127 | /** |
| 128 | * cs5535_set_dma_mode - set host controller for DMA mode |
Bartlomiej Zolnierkiewicz | 8776168 | 2010-01-19 01:45:29 -0800 | [diff] [blame] | 129 | * @hwif: port |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 130 | * @drive: drive |
Jaya Kumar | f5b2d8b | 2005-11-09 23:58:16 +0100 | [diff] [blame] | 131 | * |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 132 | * Programs the chipset for DMA mode. |
Jaya Kumar | f5b2d8b | 2005-11-09 23:58:16 +0100 | [diff] [blame] | 133 | */ |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 134 | |
Bartlomiej Zolnierkiewicz | 8776168 | 2010-01-19 01:45:29 -0800 | [diff] [blame] | 135 | static void cs5535_set_dma_mode(ide_hwif_t *hwif, ide_drive_t *drive) |
Jaya Kumar | f5b2d8b | 2005-11-09 23:58:16 +0100 | [diff] [blame] | 136 | { |
Bartlomiej Zolnierkiewicz | 8776168 | 2010-01-19 01:45:29 -0800 | [diff] [blame] | 137 | cs5535_set_speed(drive, drive->dma_mode); |
Jaya Kumar | f5b2d8b | 2005-11-09 23:58:16 +0100 | [diff] [blame] | 138 | } |
| 139 | |
Bartlomiej Zolnierkiewicz | 26bcb87 | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 140 | /** |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 141 | * cs5535_set_pio_mode - set host controller for PIO mode |
Bartlomiej Zolnierkiewicz | e085b3c | 2010-01-19 01:44:41 -0800 | [diff] [blame] | 142 | * @hwif: port |
Bartlomiej Zolnierkiewicz | 26bcb87 | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 143 | * @drive: drive |
Jaya Kumar | f5b2d8b | 2005-11-09 23:58:16 +0100 | [diff] [blame] | 144 | * |
| 145 | * A callback from the upper layers for PIO-only tuning. |
| 146 | */ |
Bartlomiej Zolnierkiewicz | 26bcb87 | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 147 | |
Bartlomiej Zolnierkiewicz | e085b3c | 2010-01-19 01:44:41 -0800 | [diff] [blame] | 148 | static void cs5535_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive) |
Jaya Kumar | f5b2d8b | 2005-11-09 23:58:16 +0100 | [diff] [blame] | 149 | { |
Bartlomiej Zolnierkiewicz | e085b3c | 2010-01-19 01:44:41 -0800 | [diff] [blame] | 150 | cs5535_set_speed(drive, drive->pio_mode); |
Jaya Kumar | f5b2d8b | 2005-11-09 23:58:16 +0100 | [diff] [blame] | 151 | } |
| 152 | |
Bartlomiej Zolnierkiewicz | f454cbe | 2008-08-05 18:17:04 +0200 | [diff] [blame] | 153 | static u8 cs5535_cable_detect(ide_hwif_t *hwif) |
Jaya Kumar | f5b2d8b | 2005-11-09 23:58:16 +0100 | [diff] [blame] | 154 | { |
Bartlomiej Zolnierkiewicz | b4d1c73 | 2008-02-02 19:56:29 +0100 | [diff] [blame] | 155 | struct pci_dev *dev = to_pci_dev(hwif->dev); |
Jaya Kumar | f5b2d8b | 2005-11-09 23:58:16 +0100 | [diff] [blame] | 156 | u8 bit; |
| 157 | |
| 158 | /* if a 80 wire cable was detected */ |
| 159 | pci_read_config_byte(dev, CS5535_CABLE_DETECT, &bit); |
Bartlomiej Zolnierkiewicz | 49521f9 | 2007-07-09 23:17:58 +0200 | [diff] [blame] | 160 | |
| 161 | return (bit & 1) ? ATA_CBL_PATA80 : ATA_CBL_PATA40; |
Jaya Kumar | f5b2d8b | 2005-11-09 23:58:16 +0100 | [diff] [blame] | 162 | } |
| 163 | |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 164 | static const struct ide_port_ops cs5535_port_ops = { |
| 165 | .set_pio_mode = cs5535_set_pio_mode, |
| 166 | .set_dma_mode = cs5535_set_dma_mode, |
| 167 | .cable_detect = cs5535_cable_detect, |
| 168 | }; |
Jaya Kumar | f5b2d8b | 2005-11-09 23:58:16 +0100 | [diff] [blame] | 169 | |
Greg Kroah-Hartman | fe31edc | 2012-12-21 13:21:03 -0800 | [diff] [blame] | 170 | static const struct ide_port_info cs5535_chipset = { |
Bartlomiej Zolnierkiewicz | ced3ec8 | 2008-07-24 22:53:32 +0200 | [diff] [blame] | 171 | .name = DRV_NAME, |
Bartlomiej Zolnierkiewicz | ac95bee | 2008-04-26 22:25:14 +0200 | [diff] [blame] | 172 | .port_ops = &cs5535_port_ops, |
Bartlomiej Zolnierkiewicz | 3b2a5c7 | 2008-07-23 19:55:56 +0200 | [diff] [blame] | 173 | .host_flags = IDE_HFLAG_SINGLE | IDE_HFLAG_POST_SET_MODE, |
Bartlomiej Zolnierkiewicz | 4099d14 | 2007-07-20 01:11:59 +0200 | [diff] [blame] | 174 | .pio_mask = ATA_PIO4, |
Bartlomiej Zolnierkiewicz | 5f8b6c3 | 2007-10-19 00:30:07 +0200 | [diff] [blame] | 175 | .mwdma_mask = ATA_MWDMA2, |
| 176 | .udma_mask = ATA_UDMA4, |
Jaya Kumar | f5b2d8b | 2005-11-09 23:58:16 +0100 | [diff] [blame] | 177 | }; |
| 178 | |
Greg Kroah-Hartman | fe31edc | 2012-12-21 13:21:03 -0800 | [diff] [blame] | 179 | static int cs5535_init_one(struct pci_dev *dev, const struct pci_device_id *id) |
Jaya Kumar | f5b2d8b | 2005-11-09 23:58:16 +0100 | [diff] [blame] | 180 | { |
Bartlomiej Zolnierkiewicz | 6cdf6eb | 2008-07-24 22:53:14 +0200 | [diff] [blame] | 181 | return ide_pci_init_one(dev, &cs5535_chipset, NULL); |
Jaya Kumar | f5b2d8b | 2005-11-09 23:58:16 +0100 | [diff] [blame] | 182 | } |
| 183 | |
Bartlomiej Zolnierkiewicz | 9cbcc5e | 2007-10-16 22:29:56 +0200 | [diff] [blame] | 184 | static const struct pci_device_id cs5535_pci_tbl[] = { |
| 185 | { PCI_VDEVICE(NS, PCI_DEVICE_ID_NS_CS5535_IDE), 0 }, |
Bartlomiej Zolnierkiewicz | 10ca302 | 2009-12-02 14:23:01 -0800 | [diff] [blame] | 186 | { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_CS5535_IDE), }, |
Jaya Kumar | f5b2d8b | 2005-11-09 23:58:16 +0100 | [diff] [blame] | 187 | { 0, }, |
| 188 | }; |
| 189 | |
| 190 | MODULE_DEVICE_TABLE(pci, cs5535_pci_tbl); |
| 191 | |
Bartlomiej Zolnierkiewicz | a9ab09e2 | 2008-10-13 21:39:41 +0200 | [diff] [blame] | 192 | static struct pci_driver cs5535_pci_driver = { |
Bartlomiej Zolnierkiewicz | feb22b7 | 2008-10-10 22:39:32 +0200 | [diff] [blame] | 193 | .name = "CS5535_IDE", |
| 194 | .id_table = cs5535_pci_tbl, |
| 195 | .probe = cs5535_init_one, |
| 196 | .remove = ide_pci_remove, |
| 197 | .suspend = ide_pci_suspend, |
| 198 | .resume = ide_pci_resume, |
Jaya Kumar | f5b2d8b | 2005-11-09 23:58:16 +0100 | [diff] [blame] | 199 | }; |
| 200 | |
| 201 | static int __init cs5535_ide_init(void) |
| 202 | { |
Bartlomiej Zolnierkiewicz | a9ab09e2 | 2008-10-13 21:39:41 +0200 | [diff] [blame] | 203 | return ide_pci_register_driver(&cs5535_pci_driver); |
Jaya Kumar | f5b2d8b | 2005-11-09 23:58:16 +0100 | [diff] [blame] | 204 | } |
| 205 | |
Bartlomiej Zolnierkiewicz | 40c8a7f | 2008-07-24 22:53:20 +0200 | [diff] [blame] | 206 | static void __exit cs5535_ide_exit(void) |
| 207 | { |
Bartlomiej Zolnierkiewicz | a9ab09e2 | 2008-10-13 21:39:41 +0200 | [diff] [blame] | 208 | pci_unregister_driver(&cs5535_pci_driver); |
Bartlomiej Zolnierkiewicz | 40c8a7f | 2008-07-24 22:53:20 +0200 | [diff] [blame] | 209 | } |
| 210 | |
Jaya Kumar | f5b2d8b | 2005-11-09 23:58:16 +0100 | [diff] [blame] | 211 | module_init(cs5535_ide_init); |
Bartlomiej Zolnierkiewicz | 40c8a7f | 2008-07-24 22:53:20 +0200 | [diff] [blame] | 212 | module_exit(cs5535_ide_exit); |
Jaya Kumar | f5b2d8b | 2005-11-09 23:58:16 +0100 | [diff] [blame] | 213 | |
| 214 | MODULE_AUTHOR("AMD"); |
| 215 | MODULE_DESCRIPTION("PCI driver module for AMD/NS CS5535 IDE"); |
| 216 | MODULE_LICENSE("GPL"); |