board/esd/cpci750/ide.c

   1 /*
   2  * (C) Copyright 2000
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  *
  23  */
  24 /* ide.c - ide support functions */
  25
  26
  27 #include <common.h>
  28 #if defined(CONFIG_CMD_IDE)
  29 #include <ata.h>
  30 #include <ide.h>
  31 #include <pci.h>
  32
  33 extern ulong ide_bus_offset[CFG_IDE_MAXBUS];
  34
  35 int ide_preinit (void)
  36 {
  37         int status;
  38         pci_dev_t devbusfn;
  39         int l;
  40
  41         status = 1;
  42         for (l = 0; l < CFG_IDE_MAXBUS; l++) {
  43                 ide_bus_offset[l] = -ATA_STATUS;
  44         }
  45         devbusfn = pci_find_device (0x1103, 0x0004, 0);
  46         if (devbusfn == -1)
  47                 devbusfn = pci_find_device (0x1095, 0x3114, 0);
  48         if (devbusfn != -1) {
  49                 status = 0;
  50
  51                 pci_read_config_dword (devbusfn, PCI_BASE_ADDRESS_0,
  52                                        (u32 *) & ide_bus_offset[0]);
  53                 ide_bus_offset[0] &= 0xfffffffe;
  54                 ide_bus_offset[0] += CFG_PCI0_IO_SPACE;
  55                 pci_read_config_dword (devbusfn, PCI_BASE_ADDRESS_2,
  56                                        (u32 *) & ide_bus_offset[1]);
  57                 ide_bus_offset[1] &= 0xfffffffe;
  58                 ide_bus_offset[1] += CFG_PCI0_IO_SPACE;
  59         }
  60         return (status);
  61 }
  62
  63 void ide_set_reset (int flag) {
  64         return;
  65 }
  66
  67 #endif /* of CONFIG_CMDS_IDE */