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fix AR7240 PCI IRQ support

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SVN-Revision: 16669
This commit is contained in:
Gabor Juhos 2009-07-04 05:18:37 +00:00
parent ad5a85f4c5
commit d55e5fb153
2 changed files with 115 additions and 1 deletions
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81
target/linux/ar71xx/files/arch/mips/ar71xx/irq.c
View file

@ -93,6 +93,81 @@ static void __init ar71xx_pci_irq_init(void)
setup_irq(AR71XX_CPU_IRQ_PCI, &ar71xx_pci_irqaction);
}
static void ar724x_pci_irq_dispatch(void)
{
u32 pending;
pending = ar724x_pci_rr(AR724X_PCI_REG_INT_STATUS) &
ar724x_pci_rr(AR724X_PCI_REG_INT_MASK);
if (pending & AR724X_PCI_INT_DEV0)
do_IRQ(AR71XX_PCI_IRQ_DEV0);
else
spurious_interrupt();
}
static void ar724x_pci_irq_unmask(unsigned int irq)
{
switch (irq) {
case AR71XX_PCI_IRQ_DEV0:
irq -= AR71XX_PCI_IRQ_BASE;
ar724x_pci_wr(AR724X_PCI_REG_INT_MASK,
ar724x_pci_rr(AR724X_PCI_REG_INT_MASK) |
AR724X_PCI_INT_DEV0);
/* flush write */
ar724x_pci_rr(AR724X_PCI_REG_INT_MASK);
}
}
static void ar724x_pci_irq_mask(unsigned int irq)
{
switch (irq) {
case AR71XX_PCI_IRQ_DEV0:
irq -= AR71XX_PCI_IRQ_BASE;
ar724x_pci_wr(AR724X_PCI_REG_INT_MASK,
ar724x_pci_rr(AR724X_PCI_REG_INT_MASK) &
~AR724X_PCI_INT_DEV0);
/* flush write */
ar724x_pci_rr(AR724X_PCI_REG_INT_MASK);
ar724x_pci_wr(AR724X_PCI_REG_INT_STATUS,
ar724x_pci_rr(AR724X_PCI_REG_INT_STATUS) |
AR724X_PCI_INT_DEV0);
/* flush write */
ar724x_pci_rr(AR724X_PCI_REG_INT_STATUS);
}
}
static struct irq_chip ar724x_pci_irq_chip = {
.name = "AR724X PCI ",
.mask = ar724x_pci_irq_mask,
.unmask = ar724x_pci_irq_unmask,
.mask_ack = ar724x_pci_irq_mask,
};
static struct irqaction ar724x_pci_irqaction = {
.handler = no_action,
.name = "cascade [AR724X PCI]",
};
static void __init ar724x_pci_irq_init(void)
{
int i;
ar724x_pci_wr(AR724X_PCI_REG_INT_MASK, 0);
ar724x_pci_wr(AR724X_PCI_REG_INT_STATUS, 0);
for (i = AR71XX_PCI_IRQ_BASE;
i < AR71XX_PCI_IRQ_BASE + AR71XX_PCI_IRQ_COUNT; i++) {
irq_desc[i].status = IRQ_DISABLED;
set_irq_chip_and_handler(i, &ar724x_pci_irq_chip,
handle_level_irq);
}
setup_irq(AR71XX_CPU_IRQ_PCI, &ar724x_pci_irqaction);
}
#endif /* CONFIG_PCI */
static void ar71xx_gpio_irq_dispatch(void)
@ -306,10 +381,14 @@ void __init arch_init_irq(void)
case AR71XX_SOC_AR7130:
case AR71XX_SOC_AR7141:
case AR71XX_SOC_AR7161:
case AR71XX_SOC_AR7240:
#ifdef CONFIG_PCI
ar71xx_pci_irq_init();
ar71xx_ip2_irq_handler = ar71xx_pci_irq_dispatch;
#endif
case AR71XX_SOC_AR7240:
#ifdef CONFIG_PCI
ar724x_pci_irq_init();
ar71xx_ip2_irq_handler = ar724x_pci_irq_dispatch;
#endif
break;
case AR71XX_SOC_AR9130:

35
target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/ar71xx.h
View file

@ -56,6 +56,13 @@
#define AR71XX_DMA_SIZE 0x10000
#define AR71XX_STEREO_BASE (AR71XX_APB_BASE + 0x000B0000)
#define AR71XX_STEREO_SIZE 0x10000
#define AR724X_PCI_CRP_BASE (AR71XX_APB_BASE + 0x000C0000)
#define AR724X_PCI_CRP_SIZE 0x100
#define AR724X_PCI_CTRL_BASE (AR71XX_APB_BASE + 0x000F0000)
#define AR724X_PCI_CTRL_SIZE 0x100
#define AR91XX_WMAC_BASE (AR71XX_APB_BASE + 0x000C0000)
#define AR91XX_WMAC_SIZE 0x30000
@ -338,6 +345,34 @@ void ar71xx_ddr_flush(u32 reg);
#define PCI_IDSEL_ADL_START 17
#define AR7240_PCI_CFG_BASE (AR71XX_PCI_MEM_BASE + PCI_WIN4_OFFS)
#define AR7240_PCI_CFG_SIZE 0x100
#define AR724X_PCI_REG_INT_STATUS 0x4c
#define AR724X_PCI_REG_INT_MASK 0x50
#define AR724X_PCI_INT_DEV0 BIT(14)
static inline void ar724x_pci_wr(unsigned reg, u32 val)
{
void __iomem *base;
base = ioremap_nocache(AR724X_PCI_CTRL_BASE, AR724X_PCI_CTRL_SIZE);
__raw_writel(val, base + reg);
iounmap(base);
}
static inline u32 ar724x_pci_rr(unsigned reg)
{
void __iomem *base;
u32 ret;
base = ioremap_nocache(AR724X_PCI_CTRL_BASE, AR724X_PCI_CTRL_SIZE);
ret = __raw_readl(base + reg);
iounmap(base);
return ret;
}
/*
* RESET block
*/