/* * arch/sh/drivers/pci/fixups-landisk.c * * PCI initialization for the I-O DATA Device, Inc. LANDISK board * * Copyright (C) 2006 kogiidena * Copyright (C) 2010 Nobuhiro Iwamatsu * * May be copied or modified under the terms of the GNU General Public * License. See linux/COPYING for more information. */ #include <linux/kernel.h> #include <linux/types.h> #include <linux/init.h> #include <linux/delay.h> #include <linux/pci.h> #include <linux/sh_intc.h> #include "pci-sh4.h" #define PCIMCR_MRSET_OFF 0xBFFFFFFF #define PCIMCR_RFSH_OFF 0xFFFFFFFB int pcibios_map_platform_irq(const struct pci_dev *pdev, u8 slot, u8 pin) { /* * slot0: pin1-4 = irq5,6,7,8 * slot1: pin1-4 = irq6,7,8,5 * slot2: pin1-4 = irq7,8,5,6 * slot3: pin1-4 = irq8,5,6,7 */ int irq = ((slot + pin - 1) & 0x3) + evt2irq(0x2a0); if ((slot | (pin - 1)) > 0x3) { printk(KERN_WARNING "PCI: Bad IRQ mapping request for slot %d pin %c\n", slot, pin - 1 + 'A'); return -1; } return irq; } int pci_fixup_pcic(struct pci_channel *chan) { unsigned long bcr1, mcr; bcr1 = __raw_readl(SH7751_BCR1); bcr1 |= 0x40080000; /* Enable Bit 19 BREQEN, set PCIC to slave */ pci_write_reg(chan, bcr1, SH4_PCIBCR1); mcr = __raw_readl(SH7751_MCR); mcr = (mcr & PCIMCR_MRSET_OFF) & PCIMCR_RFSH_OFF; pci_write_reg(chan, mcr, SH4_PCIMCR); pci_write_reg(chan, 0x0c000000, SH7751_PCICONF5); pci_write_reg(chan, 0xd0000000, SH7751_PCICONF6); pci_write_reg(chan, 0x0c000000, SH4_PCILAR0); pci_write_reg(chan, 0x00000000, SH4_PCILAR1); return 0; }