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| author | Gabor Juhos <juhosg@openwrt.org> | 2013-02-03 10:00:16 +0000 |
|---|---|---|
| committer | John Crispin <blogic@openwrt.org> | 2013-02-17 01:25:39 +0100 |
| commit | 8b66d461187ff61c5755001af7296e6edde48423 (patch) | |
| tree | ee07c7274d2c31e083418ac9e9f497ae97f73664 /arch/mips | |
| parent | 34b134aebda89888b6985b7a3139e9cbdf209236 (diff) | |
| download | lwn-8b66d461187ff61c5755001af7296e6edde48423.tar.gz lwn-8b66d461187ff61c5755001af7296e6edde48423.zip | |
MIPS: pci-ar724x: use per-controller IRQ base
Change to the code to use per-controller IRQ base.
This is needed for multiple PCI controller support.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4915/
Signed-off-by: John Crispin <blogic@openwrt.org>
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/pci/pci-ar724x.c | 31 |
1 files changed, 21 insertions, 10 deletions
diff --git a/arch/mips/pci/pci-ar724x.c b/arch/mips/pci/pci-ar724x.c index d0d707de6c6c..0440d8800f8a 100644 --- a/arch/mips/pci/pci-ar724x.c +++ b/arch/mips/pci/pci-ar724x.c @@ -34,6 +34,7 @@ struct ar724x_pci_controller { void __iomem *ctrl_base; int irq; + int irq_base; bool link_up; bool bar0_is_cached; @@ -205,7 +206,7 @@ static void ar724x_pci_irq_handler(unsigned int irq, struct irq_desc *desc) __raw_readl(base + AR724X_PCI_REG_INT_MASK); if (pending & AR724X_PCI_INT_DEV0) - generic_handle_irq(ATH79_PCI_IRQ(0)); + generic_handle_irq(apc->irq_base + 0); else spurious_interrupt(); @@ -215,13 +216,15 @@ static void ar724x_pci_irq_unmask(struct irq_data *d) { struct ar724x_pci_controller *apc; void __iomem *base; + int offset; u32 t; apc = irq_data_get_irq_chip_data(d); base = apc->ctrl_base; + offset = apc->irq_base - d->irq; - switch (d->irq) { - case ATH79_PCI_IRQ(0): + switch (offset) { + case 0: t = __raw_readl(base + AR724X_PCI_REG_INT_MASK); __raw_writel(t | AR724X_PCI_INT_DEV0, base + AR724X_PCI_REG_INT_MASK); @@ -234,13 +237,15 @@ static void ar724x_pci_irq_mask(struct irq_data *d) { struct ar724x_pci_controller *apc; void __iomem *base; + int offset; u32 t; apc = irq_data_get_irq_chip_data(d); base = apc->ctrl_base; + offset = apc->irq_base - d->irq; - switch (d->irq) { - case ATH79_PCI_IRQ(0): + switch (offset) { + case 0: t = __raw_readl(base + AR724X_PCI_REG_INT_MASK); __raw_writel(t & ~AR724X_PCI_INT_DEV0, base + AR724X_PCI_REG_INT_MASK); @@ -264,7 +269,8 @@ static struct irq_chip ar724x_pci_irq_chip = { .irq_mask_ack = ar724x_pci_irq_mask, }; -static void ar724x_pci_irq_init(struct ar724x_pci_controller *apc) +static void ar724x_pci_irq_init(struct ar724x_pci_controller *apc, + int id) { void __iomem *base; int i; @@ -274,10 +280,10 @@ static void ar724x_pci_irq_init(struct ar724x_pci_controller *apc) __raw_writel(0, base + AR724X_PCI_REG_INT_MASK); __raw_writel(0, base + AR724X_PCI_REG_INT_STATUS); - BUILD_BUG_ON(ATH79_PCI_IRQ_COUNT < AR724X_PCI_IRQ_COUNT); + apc->irq_base = ATH79_PCI_IRQ_BASE + (id * AR724X_PCI_IRQ_COUNT); - for (i = ATH79_PCI_IRQ_BASE; - i < ATH79_PCI_IRQ_BASE + AR724X_PCI_IRQ_COUNT; i++) { + for (i = apc->irq_base; + i < apc->irq_base + AR724X_PCI_IRQ_COUNT; i++) { irq_set_chip_and_handler(i, &ar724x_pci_irq_chip, handle_level_irq); irq_set_chip_data(i, apc); @@ -291,6 +297,11 @@ static int ar724x_pci_probe(struct platform_device *pdev) { struct ar724x_pci_controller *apc; struct resource *res; + int id; + + id = pdev->id; + if (id == -1) + id = 0; apc = devm_kzalloc(&pdev->dev, sizeof(struct ar724x_pci_controller), GFP_KERNEL); @@ -347,7 +358,7 @@ static int ar724x_pci_probe(struct platform_device *pdev) if (!apc->link_up) dev_warn(&pdev->dev, "PCIe link is down\n"); - ar724x_pci_irq_init(apc); + ar724x_pci_irq_init(apc, id); register_pci_controller(&apc->pci_controller); |