board/esd/cpci750/ide.c

   1 /*
   2  * (C) Copyright 2000
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7 /* ide.c - ide support functions */
   8
   9
  10 #include <common.h>
  11 #if defined(CONFIG_CMD_IDE)
  12 #include <ata.h>
  13 #include <ide.h>
  14 #include <pci.h>
  15
  16 int cpci_hd_type;
  17
  18 int ata_device(int dev)
  19 {
  20         int retval;
  21
  22         retval = (dev & 1) << 4;
  23         if (cpci_hd_type == 2)
  24                 retval ^= 1 << 4;
  25         return retval;
  26 }
  27
  28
  29 int ide_preinit (void)
  30 {
  31         int status;
  32         pci_dev_t devbusfn;
  33         int l;
  34
  35         status = 1;
  36         cpci_hd_type = 0;
  37         if (CPCI750_SLAVE_TEST != 0)
  38                 return status;
  39         for (l = 0; l < CONFIG_SYS_IDE_MAXBUS; l++) {
  40                 ide_bus_offset[l] = -ATA_STATUS;
  41         }
  42         devbusfn = pci_find_device (0x1103, 0x0004, 0);
  43         if (devbusfn != -1) {
  44                 cpci_hd_type = 1;
  45         } else {
  46                 devbusfn = pci_find_device (0x1095, 0x3114, 0);
  47                 if (devbusfn != -1) {
  48                         cpci_hd_type = 2;
  49                 }
  50         }
  51         if (devbusfn != -1) {
  52                 ulong *ide_bus_offset_ptr;
  53
  54                 status = 0;
  55
  56                 ide_bus_offset_ptr = &ide_bus_offset[0];
  57                 pci_read_config_dword (devbusfn, PCI_BASE_ADDRESS_0,
  58                                        (u32 *)ide_bus_offset_ptr);
  59                 ide_bus_offset[0] &= 0xfffffffe;
  60                 ide_bus_offset[0] += CONFIG_SYS_PCI0_IO_SPACE;
  61                 ide_bus_offset_ptr = &ide_bus_offset[1];
  62                 pci_read_config_dword (devbusfn, PCI_BASE_ADDRESS_2,
  63                                        (u32 *)ide_bus_offset_ptr);
  64                 ide_bus_offset[1] &= 0xfffffffe;
  65                 ide_bus_offset[1] += CONFIG_SYS_PCI0_IO_SPACE;
  66         }
  67         return status;
  68 }
  69
  70 void ide_set_reset (int flag) {
  71         return;
  72 }
  73
  74 #endif /* of CONFIG_CMDS_IDE */