mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-25 13:43:55 +08:00
0a5f3b1c9f
Add SoC specific PCI IRQ map, and register platform devices for the two built-in PCIe RCs. Cc: Rodriguez, Luis <rodrigue@qca.qualcomm.com> Cc: Giori, Kathy <kgiori@qca.qualcomm.com> Cc: QCA Linux Team <qca-linux-team@qca.qualcomm.com> Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/4951/ Signed-off-by: John Crispin <blogic@openwrt.org>
274 lines
6.3 KiB
C
274 lines
6.3 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 <linux/resource.h>
|
|
#include <linux/platform_device.h>
|
|
#include <asm/mach-ath79/ar71xx_regs.h>
|
|
#include <asm/mach-ath79/ath79.h>
|
|
#include <asm/mach-ath79/irq.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),
|
|
}
|
|
};
|
|
|
|
static const struct ath79_pci_irq qca955x_pci_irq_map[] __initconst = {
|
|
{
|
|
.bus = 0,
|
|
.slot = 0,
|
|
.pin = 1,
|
|
.irq = ATH79_PCI_IRQ(0),
|
|
},
|
|
{
|
|
.bus = 1,
|
|
.slot = 0,
|
|
.pin = 1,
|
|
.irq = ATH79_PCI_IRQ(1),
|
|
},
|
|
};
|
|
|
|
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 if (soc_is_qca955x()) {
|
|
ath79_pci_irq_map = qca955x_pci_irq_map;
|
|
ath79_pci_nr_irqs = ARRAY_SIZE(qca955x_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->bus == dev->bus->number &&
|
|
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;
|
|
}
|
|
|
|
static struct platform_device *
|
|
ath79_register_pci_ar71xx(void)
|
|
{
|
|
struct platform_device *pdev;
|
|
struct resource res[4];
|
|
|
|
memset(res, 0, sizeof(res));
|
|
|
|
res[0].name = "cfg_base";
|
|
res[0].flags = IORESOURCE_MEM;
|
|
res[0].start = AR71XX_PCI_CFG_BASE;
|
|
res[0].end = AR71XX_PCI_CFG_BASE + AR71XX_PCI_CFG_SIZE - 1;
|
|
|
|
res[1].flags = IORESOURCE_IRQ;
|
|
res[1].start = ATH79_CPU_IRQ(2);
|
|
res[1].end = ATH79_CPU_IRQ(2);
|
|
|
|
res[2].name = "io_base";
|
|
res[2].flags = IORESOURCE_IO;
|
|
res[2].start = 0;
|
|
res[2].end = 0;
|
|
|
|
res[3].name = "mem_base";
|
|
res[3].flags = IORESOURCE_MEM;
|
|
res[3].start = AR71XX_PCI_MEM_BASE;
|
|
res[3].end = AR71XX_PCI_MEM_BASE + AR71XX_PCI_MEM_SIZE - 1;
|
|
|
|
pdev = platform_device_register_simple("ar71xx-pci", -1,
|
|
res, ARRAY_SIZE(res));
|
|
return pdev;
|
|
}
|
|
|
|
static struct platform_device *
|
|
ath79_register_pci_ar724x(int id,
|
|
unsigned long cfg_base,
|
|
unsigned long ctrl_base,
|
|
unsigned long crp_base,
|
|
unsigned long mem_base,
|
|
unsigned long mem_size,
|
|
unsigned long io_base,
|
|
int irq)
|
|
{
|
|
struct platform_device *pdev;
|
|
struct resource res[6];
|
|
|
|
memset(res, 0, sizeof(res));
|
|
|
|
res[0].name = "cfg_base";
|
|
res[0].flags = IORESOURCE_MEM;
|
|
res[0].start = cfg_base;
|
|
res[0].end = cfg_base + AR724X_PCI_CFG_SIZE - 1;
|
|
|
|
res[1].name = "ctrl_base";
|
|
res[1].flags = IORESOURCE_MEM;
|
|
res[1].start = ctrl_base;
|
|
res[1].end = ctrl_base + AR724X_PCI_CTRL_SIZE - 1;
|
|
|
|
res[2].flags = IORESOURCE_IRQ;
|
|
res[2].start = irq;
|
|
res[2].end = irq;
|
|
|
|
res[3].name = "mem_base";
|
|
res[3].flags = IORESOURCE_MEM;
|
|
res[3].start = mem_base;
|
|
res[3].end = mem_base + mem_size - 1;
|
|
|
|
res[4].name = "io_base";
|
|
res[4].flags = IORESOURCE_IO;
|
|
res[4].start = io_base;
|
|
res[4].end = io_base;
|
|
|
|
res[5].name = "crp_base";
|
|
res[5].flags = IORESOURCE_MEM;
|
|
res[5].start = crp_base;
|
|
res[5].end = crp_base + AR724X_PCI_CRP_SIZE - 1;
|
|
|
|
pdev = platform_device_register_simple("ar724x-pci", id,
|
|
res, ARRAY_SIZE(res));
|
|
return pdev;
|
|
}
|
|
|
|
int __init ath79_register_pci(void)
|
|
{
|
|
struct platform_device *pdev = NULL;
|
|
|
|
if (soc_is_ar71xx()) {
|
|
pdev = ath79_register_pci_ar71xx();
|
|
} else if (soc_is_ar724x()) {
|
|
pdev = ath79_register_pci_ar724x(-1,
|
|
AR724X_PCI_CFG_BASE,
|
|
AR724X_PCI_CTRL_BASE,
|
|
AR724X_PCI_CRP_BASE,
|
|
AR724X_PCI_MEM_BASE,
|
|
AR724X_PCI_MEM_SIZE,
|
|
0,
|
|
ATH79_CPU_IRQ(2));
|
|
} else if (soc_is_ar9342() ||
|
|
soc_is_ar9344()) {
|
|
u32 bootstrap;
|
|
|
|
bootstrap = ath79_reset_rr(AR934X_RESET_REG_BOOTSTRAP);
|
|
if ((bootstrap & AR934X_BOOTSTRAP_PCIE_RC) == 0)
|
|
return -ENODEV;
|
|
|
|
pdev = ath79_register_pci_ar724x(-1,
|
|
AR724X_PCI_CFG_BASE,
|
|
AR724X_PCI_CTRL_BASE,
|
|
AR724X_PCI_CRP_BASE,
|
|
AR724X_PCI_MEM_BASE,
|
|
AR724X_PCI_MEM_SIZE,
|
|
0,
|
|
ATH79_IP2_IRQ(0));
|
|
} else if (soc_is_qca9558()) {
|
|
pdev = ath79_register_pci_ar724x(0,
|
|
QCA955X_PCI_CFG_BASE0,
|
|
QCA955X_PCI_CTRL_BASE0,
|
|
QCA955X_PCI_CRP_BASE0,
|
|
QCA955X_PCI_MEM_BASE0,
|
|
QCA955X_PCI_MEM_SIZE,
|
|
0,
|
|
ATH79_IP2_IRQ(0));
|
|
|
|
pdev = ath79_register_pci_ar724x(1,
|
|
QCA955X_PCI_CFG_BASE1,
|
|
QCA955X_PCI_CTRL_BASE1,
|
|
QCA955X_PCI_CRP_BASE1,
|
|
QCA955X_PCI_MEM_BASE1,
|
|
QCA955X_PCI_MEM_SIZE,
|
|
1,
|
|
ATH79_IP3_IRQ(2));
|
|
} else {
|
|
/* No PCI support */
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (!pdev)
|
|
pr_err("unable to register PCI controller device\n");
|
|
|
|
return pdev ? 0 : -ENODEV;
|
|
}
|