drivers/ide/pci/triflex.c

   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
  43 static 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
  94 static void triflex_set_pio_mode(ide_drive_t *drive, const u8 pio)
  95 {
  96         triflex_set_mode(drive, XFER_PIO_0 + pio);
  97 }
  98
  99 static 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
 105 static 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
 115 static 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
 121 static const struct pci_device_id triflex_pci_tbl[] = {
 122         { PCI_VDEVICE(COMPAQ, PCI_DEVICE_ID_COMPAQ_TRIFLEX_IDE), 0 },
 123         { 0, },
 124 };
 125 MODULE_DEVICE_TABLE(pci, triflex_pci_tbl);
 126
 127 static struct pci_driver driver = {
 128         .name           = "TRIFLEX_IDE",
 129         .id_table       = triflex_pci_tbl,
 130         .probe          = triflex_init_one,
 131 };
 132
 133 static int __init triflex_ide_init(void)
 134 {
 135         return ide_pci_register_driver(&driver);
 136 }
 137
 138 module_init(triflex_ide_init);
 139
 140 MODULE_AUTHOR("Torben Mathiasen");
 141 MODULE_DESCRIPTION("PCI driver module for Compaq Triflex IDE");
 142 MODULE_LICENSE("GPL");
 143
 144