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