1/* 2 * triflex.c 3 * 4 * IDE Chipset driver for the Compaq TriFlex IDE controller. 5 * 6 * Known to work with the Compaq Workstation 5x00 series. 7 * 8 * Copyright (C) 2002 Hewlett-Packard Development Group, L.P. 9 * Author: Torben Mathiasen <torben.mathiasen@hp.com> 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License version 2 as 13 * published by the Free Software Foundation. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 23 * 24 * Loosely based on the piix & svwks drivers. 25 * 26 * Documentation: 27 * Not publically available. 28 */ 29 30#include <linux/types.h> 31#include <linux/module.h> 32#include <linux/kernel.h> 33#include <linux/delay.h> 34#include <linux/timer.h> 35#include <linux/mm.h> 36#include <linux/ioport.h> 37#include <linux/blkdev.h> 38#include <linux/hdreg.h> 39#include <linux/pci.h> 40#include <linux/ide.h> 41#include <linux/init.h> 42 43static int triflex_tune_chipset(ide_drive_t *drive, u8 xferspeed) 44{ 45 ide_hwif_t *hwif = HWIF(drive); 46 struct pci_dev *dev = hwif->pci_dev; 47 u8 channel_offset = hwif->channel ? 0x74 : 0x70; 48 u16 timing = 0; 49 u32 triflex_timings = 0; 50 u8 unit = (drive->select.b.unit & 0x01); 51 u8 speed = ide_rate_filter(drive, xferspeed); 52 53 pci_read_config_dword(dev, channel_offset, &triflex_timings); 54 55 switch(speed) { 56 case XFER_MW_DMA_2: 57 timing = 0x0103; 58 break; 59 case XFER_MW_DMA_1: 60 timing = 0x0203; 61 break; 62 case XFER_MW_DMA_0: 63 timing = 0x0808; 64 break; 65 case XFER_SW_DMA_2: 66 case XFER_SW_DMA_1: 67 case XFER_SW_DMA_0: 68 timing = 0x0f0f; 69 break; 70 case XFER_PIO_4: 71 timing = 0x0202; 72 break; 73 case XFER_PIO_3: 74 timing = 0x0204; 75 break; 76 case XFER_PIO_2: 77 timing = 0x0404; 78 break; 79 case XFER_PIO_1: 80 timing = 0x0508; 81 break; 82 case XFER_PIO_0: 83 timing = 0x0808; 84 break; 85 default: 86 return -1; 87 } 88 89 triflex_timings &= ~(0xFFFF << (16 * unit)); 90 triflex_timings |= (timing << (16 * unit)); 91 92 pci_write_config_dword(dev, channel_offset, triflex_timings); 93 94 return (ide_config_drive_speed(drive, speed)); 95} 96 97static void triflex_tune_drive(ide_drive_t *drive, u8 pio) 98{ 99 int use_pio = ide_get_best_pio_mode(drive, pio, 4, NULL); 100 (void) triflex_tune_chipset(drive, (XFER_PIO_0 + use_pio)); 101} 102 103static int triflex_config_drive_xfer_rate(ide_drive_t *drive) 104{ 105 if (ide_tune_dma(drive)) 106 return 0; 107 108 triflex_tune_drive(drive, 255); 109 110 return -1; 111} 112 113static void __devinit init_hwif_triflex(ide_hwif_t *hwif) 114{ 115 hwif->tuneproc = &triflex_tune_drive; 116 hwif->speedproc = &triflex_tune_chipset; 117 118 hwif->atapi_dma = 1; 119 hwif->mwdma_mask = 0x07; 120 hwif->swdma_mask = 0x07; 121 hwif->ide_dma_check = &triflex_config_drive_xfer_rate; 122 123 if (!noautodma) 124 hwif->autodma = 1; 125 hwif->drives[0].autodma = hwif->autodma; 126 hwif->drives[1].autodma = hwif->autodma; 127} 128 129static ide_pci_device_t triflex_device __devinitdata = { 130 .name = "TRIFLEX", 131 .init_hwif = init_hwif_triflex, 132 .channels = 2, 133 .autodma = AUTODMA, 134 .enablebits = {{0x80, 0x01, 0x01}, {0x80, 0x02, 0x02}}, 135 .bootable = ON_BOARD, 136}; 137 138static int __devinit triflex_init_one(struct pci_dev *dev, 139 const struct pci_device_id *id) 140{ 141 return ide_setup_pci_device(dev, &triflex_device); 142} 143 144static struct pci_device_id triflex_pci_tbl[] = { 145 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_TRIFLEX_IDE, 146 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, 147 { 0, }, 148}; 149MODULE_DEVICE_TABLE(pci, triflex_pci_tbl); 150 151static struct pci_driver driver = { 152 .name = "TRIFLEX_IDE", 153 .id_table = triflex_pci_tbl, 154 .probe = triflex_init_one, 155}; 156 157static int __init triflex_ide_init(void) 158{ 159 return ide_pci_register_driver(&driver); 160} 161 162module_init(triflex_ide_init); 163 164MODULE_AUTHOR("Torben Mathiasen"); 165MODULE_DESCRIPTION("PCI driver module for Compaq Triflex IDE"); 166MODULE_LICENSE("GPL"); 167