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 <linux/pci.h> 14 #include "pci-sh4.h" 15 16 #define PCIMCR_MRSET_OFF 0xBFFFFFFF 17 #define PCIMCR_RFSH_OFF 0xFFFFFFFB 18 19 int pci_fixup_pcic(struct pci_channel *chan) 20 { 21 unsigned long bcr1, mcr; 22 23 bcr1 = ctrl_inl(SH7751_BCR1); 24 bcr1 |= 0x40080000; /* Enable Bit 19 BREQEN, set PCIC to slave */ 25 pci_write_reg(chan, bcr1, SH4_PCIBCR1); 26 27 /* Enable all interrupts, so we known what to fix */ 28 pci_write_reg(chan, 0x0000c3ff, SH4_PCIINTM); 29 pci_write_reg(chan, 0x0000380f, SH4_PCIAINTM); 30 31 pci_write_reg(chan, 0xfb900047, SH7751_PCICONF1); 32 pci_write_reg(chan, 0xab000001, SH7751_PCICONF4); 33 34 mcr = ctrl_inl(SH7751_MCR); 35 mcr = (mcr & PCIMCR_MRSET_OFF) & PCIMCR_RFSH_OFF; 36 pci_write_reg(chan, mcr, SH4_PCIMCR); 37 38 pci_write_reg(chan, 0x0c000000, SH7751_PCICONF5); 39 pci_write_reg(chan, 0xd0000000, SH7751_PCICONF6); 40 pci_write_reg(chan, 0x0c000000, SH4_PCILAR0); 41 pci_write_reg(chan, 0x00000000, SH4_PCILAR1); 42 43 return 0; 44 } 45