arch/sh/drivers/pci/fixups-rts7751r2d.c

   1 /*
   2  * arch/sh/drivers/pci/fixups-rts7751r2d.c
   3  *
   4  * RTS7751R2D PCI fixups
   5  *
   6  * Copyright (C) 2003  Lineo uSolutions, Inc.
   7  * Copyright (C) 2004  Paul Mundt
   8  *
   9  * This file is subject to the terms and conditions of the GNU General Public
  10  * License.  See the file "COPYING" in the main directory of this archive
  11  * for more details.
  12  */
  13 #include "pci-sh4.h"
  14
  15 #define PCIMCR_MRSET_OFF        0xBFFFFFFF
  16 #define PCIMCR_RFSH_OFF         0xFFFFFFFB
  17
  18 int pci_fixup_pcic(void)
  19 {
  20         unsigned long bcr1, mcr;
  21
  22         bcr1 = inl(SH7751_BCR1);
  23         bcr1 |= 0x40080000;     /* Enable Bit 19 BREQEN, set PCIC to slave */
  24         pci_write_reg(bcr1, SH4_PCIBCR1);
  25
  26         /* Enable all interrupts, so we known what to fix */
  27         pci_write_reg(0x0000c3ff, SH4_PCIINTM);
  28         pci_write_reg(0x0000380f, SH4_PCIAINTM);
  29
  30         pci_write_reg(0xfb900047, SH7751_PCICONF1);
  31         pci_write_reg(0xab000001, SH7751_PCICONF4);
  32
  33         mcr = inl(SH7751_MCR);
  34         mcr = (mcr & PCIMCR_MRSET_OFF) & PCIMCR_RFSH_OFF;
  35         pci_write_reg(mcr, SH4_PCIMCR);
  36
  37         pci_write_reg(0x0c000000, SH7751_PCICONF5);
  38         pci_write_reg(0xd0000000, SH7751_PCICONF6);
  39         pci_write_reg(0x0c000000, SH4_PCILAR0);
  40         pci_write_reg(0x00000000, SH4_PCILAR1);
  41
  42         return 0;
  43 }