arch/sh/drivers/pci/fixups-lboxre2.c

   1 /*
   2  * arch/sh/drivers/pci/fixups-lboxre2.c
   3  *
   4  * L-BOX RE2 PCI fixups
   5  *
   6  * Copyright (C) 2007 Nobuhiro Iwamatsu
   7  *
   8  * This file is subject to the terms and conditions of the GNU General Public
   9  * License.  See the file "COPYING" in the main directory of this archive
  10  * for more details.
  11  */
  12 #include "pci-sh4.h"
  13
  14 #define PCIMCR_MRSET_OFF        0xBFFFFFFF
  15 #define PCIMCR_RFSH_OFF         0xFFFFFFFB
  16
  17 int pci_fixup_pcic(void)
  18 {
  19         unsigned long bcr1, mcr;
  20
  21         bcr1 = inl(SH7751_BCR1);
  22         bcr1 |= 0x40080000;     /* Enable Bit 19 BREQEN, set PCIC to slave */
  23         pci_write_reg(bcr1, SH4_PCIBCR1);
  24
  25         /* Enable all interrupts, so we known what to fix */
  26         pci_write_reg(0x0000c3ff, SH4_PCIINTM);
  27         pci_write_reg(0x0000380f, SH4_PCIAINTM);
  28         pci_write_reg(0xfb900047, SH7751_PCICONF1);
  29         pci_write_reg(0xab000001, SH7751_PCICONF4);
  30
  31         mcr = inl(SH7751_MCR);
  32         mcr = (mcr & PCIMCR_MRSET_OFF) & PCIMCR_RFSH_OFF;
  33         pci_write_reg(mcr, SH4_PCIMCR);
  34
  35         pci_write_reg(0x0c000000, SH7751_PCICONF5);
  36         pci_write_reg(0xd0000000, SH7751_PCICONF6);
  37         pci_write_reg(0x0c000000, SH4_PCILAR0);
  38         pci_write_reg(0x00000000, SH4_PCILAR1);
  39
  40         return 0;
  41 }