linux/drivers/ide/pci/triflex.c
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   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 void triflex_set_mode(ide_drive_t *drive, const u8 speed)
  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        
  52        pci_read_config_dword(dev, channel_offset, &triflex_timings);
  53        
  54        switch(speed) {
  55                case XFER_MW_DMA_2:
  56                        timing = 0x0103; 
  57                        break;
  58                case XFER_MW_DMA_1:
  59                        timing = 0x0203;
  60                        break;
  61                case XFER_MW_DMA_0:
  62                        timing = 0x0808;
  63                        break;
  64                case XFER_SW_DMA_2:
  65                case XFER_SW_DMA_1:
  66                case XFER_SW_DMA_0:
  67                        timing = 0x0f0f;
  68                        break;
  69                case XFER_PIO_4:
  70                        timing = 0x0202;
  71                        break;
  72                case XFER_PIO_3:
  73                        timing = 0x0204;
  74                        break;
  75                case XFER_PIO_2:
  76                        timing = 0x0404;
  77                        break;
  78                case XFER_PIO_1:
  79                        timing = 0x0508;
  80                        break;
  81                case XFER_PIO_0:
  82                        timing = 0x0808;
  83                        break;
  84                default:
  85                        return;
  86        }
  87
  88        triflex_timings &= ~(0xFFFF << (16 * unit));
  89        triflex_timings |= (timing << (16 * unit));
  90        
  91        pci_write_config_dword(dev, channel_offset, triflex_timings);
  92}
  93
  94static void triflex_set_pio_mode(ide_drive_t *drive, const u8 pio)
  95{
  96        triflex_set_mode(drive, XFER_PIO_0 + pio);
  97}
  98
  99static void __devinit init_hwif_triflex(ide_hwif_t *hwif)
 100{
 101        hwif->set_pio_mode = &triflex_set_pio_mode;
 102        hwif->set_dma_mode = &triflex_set_mode;
 103}
 104
 105static const struct ide_port_info triflex_device __devinitdata = {
 106        .name           = "TRIFLEX",
 107        .init_hwif      = init_hwif_triflex,
 108        .enablebits     = {{0x80, 0x01, 0x01}, {0x80, 0x02, 0x02}},
 109        .host_flags     = IDE_HFLAG_BOOTABLE,
 110        .pio_mask       = ATA_PIO4,
 111        .swdma_mask     = ATA_SWDMA2,
 112        .mwdma_mask     = ATA_MWDMA2,
 113};
 114
 115static int __devinit triflex_init_one(struct pci_dev *dev, 
 116                const struct pci_device_id *id)
 117{
 118        return ide_setup_pci_device(dev, &triflex_device);
 119}
 120
 121static const struct pci_device_id triflex_pci_tbl[] = {
 122        { PCI_VDEVICE(COMPAQ, PCI_DEVICE_ID_COMPAQ_TRIFLEX_IDE), 0 },
 123        { 0, },
 124};
 125MODULE_DEVICE_TABLE(pci, triflex_pci_tbl);
 126
 127static struct pci_driver driver = {
 128        .name           = "TRIFLEX_IDE",
 129        .id_table       = triflex_pci_tbl,
 130        .probe          = triflex_init_one,
 131};
 132
 133static int __init triflex_ide_init(void)
 134{
 135        return ide_pci_register_driver(&driver);
 136}
 137
 138module_init(triflex_ide_init);
 139
 140MODULE_AUTHOR("Torben Mathiasen");
 141MODULE_DESCRIPTION("PCI driver module for Compaq Triflex IDE");
 142MODULE_LICENSE("GPL");
 143
 144
 145
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