forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
57 lines
1.4 KiB
57 lines
1.4 KiB
// 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; |
|
}
|
|
|