forked from Minki/linux
ec9502599c
Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Acked-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com> Cc: linux-mips@linux-mips.org Cc: mcgrof@infradead.org Patchwork: https://patchwork.linux-mips.org/patch/3516/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
131 lines
3.0 KiB
C
131 lines
3.0 KiB
C
/*
|
|
* Atheros AR71XX/AR724X specific PCI setup code
|
|
*
|
|
* Copyright (C) 2011 René Bolldorf <xsecute@googlemail.com>
|
|
* Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
|
|
* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
|
|
*
|
|
* Parts of this file are based on Atheros' 2.6.15 BSP
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License version 2 as published
|
|
* by the Free Software Foundation.
|
|
*/
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/pci.h>
|
|
#include <asm/mach-ath79/ar71xx_regs.h>
|
|
#include <asm/mach-ath79/ath79.h>
|
|
#include <asm/mach-ath79/irq.h>
|
|
#include <asm/mach-ath79/pci.h>
|
|
#include "pci.h"
|
|
|
|
static int (*ath79_pci_plat_dev_init)(struct pci_dev *dev);
|
|
static const struct ath79_pci_irq *ath79_pci_irq_map __initdata;
|
|
static unsigned ath79_pci_nr_irqs __initdata;
|
|
|
|
static const struct ath79_pci_irq ar71xx_pci_irq_map[] __initconst = {
|
|
{
|
|
.slot = 17,
|
|
.pin = 1,
|
|
.irq = ATH79_PCI_IRQ(0),
|
|
}, {
|
|
.slot = 18,
|
|
.pin = 1,
|
|
.irq = ATH79_PCI_IRQ(1),
|
|
}, {
|
|
.slot = 19,
|
|
.pin = 1,
|
|
.irq = ATH79_PCI_IRQ(2),
|
|
}
|
|
};
|
|
|
|
static const struct ath79_pci_irq ar724x_pci_irq_map[] __initconst = {
|
|
{
|
|
.slot = 0,
|
|
.pin = 1,
|
|
.irq = ATH79_PCI_IRQ(0),
|
|
}
|
|
};
|
|
|
|
int __init pcibios_map_irq(const struct pci_dev *dev, uint8_t slot, uint8_t pin)
|
|
{
|
|
int irq = -1;
|
|
int i;
|
|
|
|
if (ath79_pci_nr_irqs == 0 ||
|
|
ath79_pci_irq_map == NULL) {
|
|
if (soc_is_ar71xx()) {
|
|
ath79_pci_irq_map = ar71xx_pci_irq_map;
|
|
ath79_pci_nr_irqs = ARRAY_SIZE(ar71xx_pci_irq_map);
|
|
} else if (soc_is_ar724x() ||
|
|
soc_is_ar9342() ||
|
|
soc_is_ar9344()) {
|
|
ath79_pci_irq_map = ar724x_pci_irq_map;
|
|
ath79_pci_nr_irqs = ARRAY_SIZE(ar724x_pci_irq_map);
|
|
} else {
|
|
pr_crit("pci %s: invalid irq map\n",
|
|
pci_name((struct pci_dev *) dev));
|
|
return irq;
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < ath79_pci_nr_irqs; i++) {
|
|
const struct ath79_pci_irq *entry;
|
|
|
|
entry = &ath79_pci_irq_map[i];
|
|
if (entry->slot == slot && entry->pin == pin) {
|
|
irq = entry->irq;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (irq < 0)
|
|
pr_crit("pci %s: no irq found for pin %u\n",
|
|
pci_name((struct pci_dev *) dev), pin);
|
|
else
|
|
pr_info("pci %s: using irq %d for pin %u\n",
|
|
pci_name((struct pci_dev *) dev), irq, pin);
|
|
|
|
return irq;
|
|
}
|
|
|
|
int pcibios_plat_dev_init(struct pci_dev *dev)
|
|
{
|
|
if (ath79_pci_plat_dev_init)
|
|
return ath79_pci_plat_dev_init(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void __init ath79_pci_set_irq_map(unsigned nr_irqs,
|
|
const struct ath79_pci_irq *map)
|
|
{
|
|
ath79_pci_nr_irqs = nr_irqs;
|
|
ath79_pci_irq_map = map;
|
|
}
|
|
|
|
void __init ath79_pci_set_plat_dev_init(int (*func)(struct pci_dev *dev))
|
|
{
|
|
ath79_pci_plat_dev_init = func;
|
|
}
|
|
|
|
int __init ath79_register_pci(void)
|
|
{
|
|
if (soc_is_ar71xx())
|
|
return ar71xx_pcibios_init();
|
|
|
|
if (soc_is_ar724x())
|
|
return ar724x_pcibios_init(ATH79_CPU_IRQ_IP2);
|
|
|
|
if (soc_is_ar9342() || soc_is_ar9344()) {
|
|
u32 bootstrap;
|
|
|
|
bootstrap = ath79_reset_rr(AR934X_RESET_REG_BOOTSTRAP);
|
|
if (bootstrap & AR934X_BOOTSTRAP_PCIE_RC)
|
|
return ar724x_pcibios_init(ATH79_IP2_IRQ(0));
|
|
}
|
|
|
|
return -ENODEV;
|
|
}
|