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/config.h>
  31 #include <linux/types.h>
  32 #include <linux/module.h>
  33 #include <linux/kernel.h>
  34 #include <linux/delay.h>
  35 #include <linux/timer.h>
  36 #include <linux/mm.h>
  37 #include <linux/ioport.h>
  38 #include <linux/blkdev.h>
  39 #include <linux/hdreg.h>
  40 #include <linux/pci.h>
  41 #include <linux/ide.h>
  42 #include <linux/init.h>
  43
  44 static struct pci_dev *triflex_dev;
  45
  46 #ifdef CONFIG_PROC_FS
  47 static int triflex_get_info(char *buf, char **addr, off_t offset, int count)
  48 {
  49         char *p = buf;
  50         int len;
  51
  52         struct pci_dev *dev     = triflex_dev;
  53         unsigned long bibma = pci_resource_start(dev, 4);
  54         u8  c0 = 0, c1 = 0;
  55         u32 pri_timing, sec_timing;
  56
  57         p += sprintf(p, "\n                                Compaq Triflex Chipset\n");
  58
  59         pci_read_config_dword(dev, 0x70, &pri_timing);
  60         pci_read_config_dword(dev, 0x74, &sec_timing);
  61
  62         /*
  63          * at that point bibma+0x2 et bibma+0xa are byte registers
  64          * to investigate:
  65          */
  66         c0 = inb((unsigned short)bibma + 0x02);
  67         c1 = inb((unsigned short)bibma + 0x0a);
  68
  69         p += sprintf(p, "--------------- Primary Channel "
  70                         "---------------- Secondary Channel "
  71                         "-------------\n");
  72         p += sprintf(p, "                %sabled "
  73                         "                        %sabled\n",
  74                         (c0&0x80) ? "dis" : " en",
  75                         (c1&0x80) ? "dis" : " en");
  76         p += sprintf(p, "--------------- drive0 --------- drive1 "
  77                         "-------- drive0 ---------- drive1 ------\n");
  78         p += sprintf(p, "DMA enabled:    %s              %s "
  79                         "            %s               %s\n",
  80                         (c0&0x20) ? "yes" : "no ",
  81                         (c0&0x40) ? "yes" : "no ",
  82                         (c1&0x20) ? "yes" : "no ",
  83                         (c1&0x40) ? "yes" : "no " );
  84
  85         p += sprintf(p, "DMA\n");
  86         p += sprintf(p, "PIO\n");
  87
  88         len = (p - buf) - offset;
  89         *addr = buf + offset;
  90
  91         return len > count ? count : len;
  92 }
  93 #endif
  94
  95 static int triflex_tune_chipset(ide_drive_t *drive, u8 xferspeed)
  96 {
  97         ide_hwif_t *hwif = HWIF(drive);
  98         struct pci_dev *dev = hwif->pci_dev;
  99         u8 channel_offset = hwif->channel ? 0x74 : 0x70;
 100         u16 timing = 0;
 101         u32 triflex_timings = 0;
 102         u8 unit = (drive->select.b.unit & 0x01);
 103         u8 speed = ide_rate_filter(0, xferspeed);
 104
 105         pci_read_config_dword(dev, channel_offset, &triflex_timings);
 106
 107         switch(speed) {
 108                 case XFER_MW_DMA_2:
 109                         timing = 0x0103;
 110                         break;
 111                 case XFER_MW_DMA_1:
 112                         timing = 0x0203;
 113                         break;
 114                 case XFER_MW_DMA_0:
 115                         timing = 0x0808;
 116                         break;
 117                 case XFER_SW_DMA_2:
 118                 case XFER_SW_DMA_1:
 119                 case XFER_SW_DMA_0:
 120                         timing = 0x0f0f;
 121                         break;
 122                 case XFER_PIO_4:
 123                         timing = 0x0202;
 124                         break;
 125                 case XFER_PIO_3:
 126                         timing = 0x0204;
 127                         break;
 128                 case XFER_PIO_2:
 129                         timing = 0x0404;
 130                         break;
 131                 case XFER_PIO_1:
 132                         timing = 0x0508;
 133                         break;
 134                 case XFER_PIO_0:
 135                         timing = 0x0808;
 136                         break;
 137                 default:
 138                         return -1;
 139         }
 140
 141         triflex_timings &= ~(0xFFFF << (16 * unit));
 142         triflex_timings |= (timing << (16 * unit));
 143
 144         pci_write_config_dword(dev, channel_offset, triflex_timings);
 145
 146         return (ide_config_drive_speed(drive, speed));
 147 }
 148
 149 static void triflex_tune_drive(ide_drive_t *drive, u8 pio)
 150 {
 151         int use_pio = ide_get_best_pio_mode(drive, pio, 4, NULL);
 152         (void) triflex_tune_chipset(drive, (XFER_PIO_0 + use_pio));
 153 }
 154
 155 static int triflex_config_drive_for_dma(ide_drive_t *drive)
 156 {
 157         int speed = ide_dma_speed(drive, 0); /* No ultra speeds */
 158
 159         if (!speed) {
 160                 u8 pspeed = ide_get_best_pio_mode(drive, 255, 4, NULL);
 161                 speed = XFER_PIO_0 + pspeed;
 162         }
 163
 164         (void) triflex_tune_chipset(drive, speed);
 165          return ide_dma_enable(drive);
 166 }
 167
 168 static int triflex_config_drive_xfer_rate(ide_drive_t *drive)
 169 {
 170         ide_hwif_t *hwif        = HWIF(drive);
 171         struct hd_driveid *id   = drive->id;
 172
 173         if (id && (id->capability & 1) && drive->autodma) {
 174                 if (__ide_dma_bad_drive(drive))
 175                         goto tune_pio;
 176                 if (id->field_valid & 2) {
 177                         if ((id->dma_mword & hwif->mwdma_mask) ||
 178                                 (id->dma_1word & hwif->swdma_mask)) {
 179                                 if (!triflex_config_drive_for_dma(drive))
 180                                         goto tune_pio;
 181                         }
 182                 } else
 183                         goto tune_pio;
 184         } else {
 185 tune_pio:
 186                 hwif->tuneproc(drive, 255);
 187                 return hwif->ide_dma_off_quietly(drive);
 188         }
 189
 190         return hwif->ide_dma_on(drive);
 191 }
 192
 193 static void __init init_hwif_triflex(ide_hwif_t *hwif)
 194 {
 195         hwif->tuneproc = &triflex_tune_drive;
 196         hwif->speedproc = &triflex_tune_chipset;
 197
 198         hwif->atapi_dma  = 1;
 199         hwif->mwdma_mask = 0x07;
 200         hwif->swdma_mask = 0x07;
 201         hwif->ide_dma_check = &triflex_config_drive_xfer_rate;
 202
 203         if (!noautodma)
 204                 hwif->autodma = 1;
 205         hwif->drives[0].autodma = hwif->autodma;
 206         hwif->drives[1].autodma = hwif->autodma;
 207 }
 208
 209 static unsigned int __init init_chipset_triflex(struct pci_dev *dev,
 210                 const char *name)
 211 {
 212 #ifdef CONFIG_PROC_FS
 213         ide_pci_create_host_proc("triflex", triflex_get_info);
 214 #endif
 215         return 0;
 216 }
 217
 218 static ide_pci_device_t triflex_device __devinitdata = {
 219         .name           = "TRIFLEX",
 220         .init_chipset   = init_chipset_triflex,
 221         .init_hwif      = init_hwif_triflex,
 222         .channels       = 2,
 223         .autodma        = AUTODMA,
 224         .enablebits     = {{0x80, 0x01, 0x01}, {0x80, 0x02, 0x02}},
 225         .bootable       = ON_BOARD,
 226 };
 227
 228 static int __devinit triflex_init_one(struct pci_dev *dev,
 229                 const struct pci_device_id *id)
 230 {
 231         ide_setup_pci_device(dev, &triflex_device);
 232         triflex_dev = dev;
 233
 234         return 0;
 235 }
 236
 237 static struct pci_device_id triflex_pci_tbl[] = {
 238         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_TRIFLEX_IDE,
 239           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
 240         { 0, },
 241 };
 242 MODULE_DEVICE_TABLE(pci, triflex_pci_tbl);
 243
 244 static struct pci_driver driver = {
 245         .name           = "TRIFLEX IDE",
 246         .id_table       = triflex_pci_tbl,
 247         .probe          = triflex_init_one,
 248 };
 249
 250 static int triflex_ide_init(void)
 251 {
 252         return ide_pci_register_driver(&driver);
 253 }
 254
 255 module_init(triflex_ide_init);
 256
 257 MODULE_AUTHOR("Torben Mathiasen");
 258 MODULE_DESCRIPTION("PCI driver module for Compaq Triflex IDE");
 259 MODULE_LICENSE("GPL");
 260
 261