diff options
Diffstat (limited to '')
| -rw-r--r-- | arch/sh/drivers/pci/fixups-landisk.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/arch/sh/drivers/pci/fixups-landisk.c b/arch/sh/drivers/pci/fixups-landisk.c new file mode 100644 index 000000000..53fa2fc87 --- /dev/null +++ b/arch/sh/drivers/pci/fixups-landisk.c @@ -0,0 +1,57 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * 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 + */ +#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; +} |