board/linkstation/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
  29 #ifdef CONFIG_CMD_IDE
  30 #include <ata.h>
  31 #include <ide.h>
  32 #include <pci.h>
  33
  34 #define IT8212_PCI_CpuCONTROL           0x5e
  35 #define IT8212_PCI_PciModeCONTROL       0x50
  36 #define IT8212_PCI_IdeIoCONFIG          0x40
  37 #define IT8212_PCI_IdeBusSkewCONTROL    0x4c
  38 #define IT8212_PCI_IdeDrivingCURRENT    0x42
  39
  40 extern struct pci_controller hose;
  41
  42 int ide_preinit (void)
  43 {
  44         int status;
  45         pci_dev_t devbusfn;
  46         int l;
  47
  48         status = 1;
  49         for (l = 0; l < CONFIG_SYS_IDE_MAXBUS; l++) {
  50                 ide_bus_offset[l] = -ATA_STATUS;
  51         }
  52         devbusfn = pci_find_device(PCI_VENDOR_ID_CMD, PCI_DEVICE_ID_SII_680, 0);
  53         if (devbusfn == -1)
  54                 devbusfn = pci_find_device(PCI_VENDOR_ID_ITE,PCI_DEVICE_ID_ITE_8212,0);
  55         if (devbusfn != -1) {
  56                 u32 ide_bus_offset32;
  57
  58                 status = 0;
  59
  60                 pci_read_config_dword (devbusfn, PCI_BASE_ADDRESS_0,
  61                                                            &ide_bus_offset32);
  62                 ide_bus_offset[0] = ide_bus_offset32 & 0xfffffffe;
  63                 ide_bus_offset[0] = pci_hose_bus_to_phys(&hose,
  64                                                 ide_bus_offset[0] & 0xfffffffe,
  65                                                 PCI_REGION_IO);
  66                 if (CONFIG_SYS_IDE_MAXBUS > 1) {
  67                         pci_read_config_dword(devbusfn, PCI_BASE_ADDRESS_2,
  68                                               (u32 *) &ide_bus_offset[1]);
  69                         ide_bus_offset[1] &= 0xfffffffe;
  70                         ide_bus_offset[1] = pci_hose_bus_to_phys(&hose,
  71                                                 ide_bus_offset[1] & 0xfffffffe,
  72                                                 PCI_REGION_IO);
  73                 }
  74         }
  75
  76         if (pci_find_device (PCI_VENDOR_ID_ITE, PCI_DEVICE_ID_ITE_8212, 0) != -1) {
  77                 pci_write_config_byte(devbusfn, IT8212_PCI_CpuCONTROL, 0x01);
  78                 pci_write_config_byte(devbusfn, IT8212_PCI_PciModeCONTROL, 0x00);
  79                 pci_write_config_word(devbusfn, PCI_COMMAND, 0x0047);
  80 #ifdef CONFIG_IT8212_SECONDARY_ENABLE
  81                 pci_write_config_word(devbusfn, IT8212_PCI_IdeIoCONFIG, 0xA0F3);
  82 #else
  83                 pci_write_config_word(devbusfn, IT8212_PCI_IdeIoCONFIG, 0x8031);
  84 #endif
  85                 pci_write_config_dword(devbusfn, IT8212_PCI_IdeBusSkewCONTROL, 0x02040204);
  86 /* __LS_COMMENT__ BUFFALO changed 2004.11.10  changed for EMI */
  87                 pci_write_config_byte(devbusfn, IT8212_PCI_IdeDrivingCURRENT, 0x36); /* 10mA */
  88 /*              pci_write_config_byte(dev, IT8212_PCI_IdeDrivingCURRENT, 0x09); */ /* 4mA */
  89 /*              pci_write_config_byte(dev, IT8212_PCI_IdeDrivingCURRENT, 0x12); */ /* 6mA */
  90 /*              pci_write_config_byte(dev, IT8212_PCI_IdeDrivingCURRENT, 0x24); */ /* 6mA,2mA */
  91 /*              pci_write_config_byte(dev, IT8212_PCI_IdeDrivingCURRENT, 0x2D); */ /* 8mA,4mA */
  92                 pci_write_config_byte(devbusfn, PCI_LATENCY_TIMER, 0x00);
  93         }
  94
  95         return (status);
  96 }
  97
  98 void ide_set_reset (int flag) {
  99         return;
 100 }
 101
 102 #endif /* CONFIG_CMD_IDE */