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MIPS: pci-ar71xx: move irq base to the controller structure
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Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4928/
Signed-off-by: John Crispin <blogic@openwrt.org>
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Gabor Juhos authored and John Crispin committed Feb 17, 2013
1 parent 42cb60d commit 326e8d1
Showing 1 changed file with 24 additions and 8 deletions.
32 changes: 24 additions & 8 deletions arch/mips/pci/pci-ar71xx.c
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Original file line number Diff line number Diff line change
Expand Up @@ -52,6 +52,7 @@ struct ar71xx_pci_controller {
void __iomem *cfg_base;
spinlock_t lock;
int irq;
int irq_base;
struct pci_controller pci_ctrl;
struct resource io_res;
struct resource mem_res;
Expand Down Expand Up @@ -238,34 +239,41 @@ static struct pci_ops ar71xx_pci_ops = {

static void ar71xx_pci_irq_handler(unsigned int irq, struct irq_desc *desc)
{
struct ar71xx_pci_controller *apc;
void __iomem *base = ath79_reset_base;
u32 pending;

apc = irq_get_handler_data(irq);

pending = __raw_readl(base + AR71XX_RESET_REG_PCI_INT_STATUS) &
__raw_readl(base + AR71XX_RESET_REG_PCI_INT_ENABLE);

if (pending & AR71XX_PCI_INT_DEV0)
generic_handle_irq(ATH79_PCI_IRQ(0));
generic_handle_irq(apc->irq_base + 0);

else if (pending & AR71XX_PCI_INT_DEV1)
generic_handle_irq(ATH79_PCI_IRQ(1));
generic_handle_irq(apc->irq_base + 1);

else if (pending & AR71XX_PCI_INT_DEV2)
generic_handle_irq(ATH79_PCI_IRQ(2));
generic_handle_irq(apc->irq_base + 2);

else if (pending & AR71XX_PCI_INT_CORE)
generic_handle_irq(ATH79_PCI_IRQ(4));
generic_handle_irq(apc->irq_base + 4);

else
spurious_interrupt();
}

static void ar71xx_pci_irq_unmask(struct irq_data *d)
{
unsigned int irq = d->irq - ATH79_PCI_IRQ_BASE;
struct ar71xx_pci_controller *apc;
unsigned int irq;
void __iomem *base = ath79_reset_base;
u32 t;

apc = irq_data_get_irq_chip_data(d);
irq = d->irq - apc->irq_base;

t = __raw_readl(base + AR71XX_RESET_REG_PCI_INT_ENABLE);
__raw_writel(t | (1 << irq), base + AR71XX_RESET_REG_PCI_INT_ENABLE);

Expand All @@ -275,10 +283,14 @@ static void ar71xx_pci_irq_unmask(struct irq_data *d)

static void ar71xx_pci_irq_mask(struct irq_data *d)
{
unsigned int irq = d->irq - ATH79_PCI_IRQ_BASE;
struct ar71xx_pci_controller *apc;
unsigned int irq;
void __iomem *base = ath79_reset_base;
u32 t;

apc = irq_data_get_irq_chip_data(d);
irq = d->irq - apc->irq_base;

t = __raw_readl(base + AR71XX_RESET_REG_PCI_INT_ENABLE);
__raw_writel(t & ~(1 << irq), base + AR71XX_RESET_REG_PCI_INT_ENABLE);

Expand All @@ -303,11 +315,15 @@ static void ar71xx_pci_irq_init(struct ar71xx_pci_controller *apc)

BUILD_BUG_ON(ATH79_PCI_IRQ_COUNT < AR71XX_PCI_IRQ_COUNT);

for (i = ATH79_PCI_IRQ_BASE;
i < ATH79_PCI_IRQ_BASE + AR71XX_PCI_IRQ_COUNT; i++)
apc->irq_base = ATH79_PCI_IRQ_BASE;
for (i = apc->irq_base;
i < apc->irq_base + AR71XX_PCI_IRQ_COUNT; i++) {
irq_set_chip_and_handler(i, &ar71xx_pci_irq_chip,
handle_level_irq);
irq_set_chip_data(i, apc);
}

irq_set_handler_data(apc->irq, apc);
irq_set_chained_handler(apc->irq, ar71xx_pci_irq_handler);
}

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