// 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 0 xBFFFFFFF
#define PCIMCR_RFSH_OFF 0 xFFFFFFFB
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 ) & 0 x3) + evt2irq(0 x2a0);
if ((slot | (pin - 1 )) > 0 x3) {
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 |= 0 x40080000; /* 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, 0 x0c000000, SH7751_PCICONF5);
pci_write_reg(chan, 0 xd0000000, SH7751_PCICONF6);
pci_write_reg(chan, 0 x0c000000, SH4_PCILAR0);
pci_write_reg(chan, 0 x00000000, SH4_PCILAR1);
return 0 ;
}
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