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118 lines
3.4 KiB
Diff
118 lines
3.4 KiB
Diff
From d85015ff3ab6df0e776c2aefc51f2da023c1edcf Mon Sep 17 00:00:00 2001
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From: Gabor Juhos <juhosg@openwrt.org>
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Date: Sun, 3 Feb 2013 10:00:16 +0000
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Subject: [PATCH] MIPS: pci-ar724x: use per-controller IRQ base
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commit 8b66d461187ff61c5755001af7296e6edde48423 upstream.
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Change to the code to use per-controller IRQ base.
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This is needed for multiple PCI controller support.
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Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
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Patchwork: http://patchwork.linux-mips.org/patch/4915/
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Signed-off-by: John Crispin <blogic@openwrt.org>
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---
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arch/mips/pci/pci-ar724x.c | 31 +++++++++++++++++++++----------
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1 file changed, 21 insertions(+), 10 deletions(-)
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--- a/arch/mips/pci/pci-ar724x.c
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+++ b/arch/mips/pci/pci-ar724x.c
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@@ -34,6 +34,7 @@ struct ar724x_pci_controller {
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void __iomem *ctrl_base;
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int irq;
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+ int irq_base;
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bool link_up;
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bool bar0_is_cached;
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@@ -205,7 +206,7 @@ static void ar724x_pci_irq_handler(unsig
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__raw_readl(base + AR724X_PCI_REG_INT_MASK);
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if (pending & AR724X_PCI_INT_DEV0)
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- generic_handle_irq(ATH79_PCI_IRQ(0));
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+ generic_handle_irq(apc->irq_base + 0);
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else
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spurious_interrupt();
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@@ -215,13 +216,15 @@ static void ar724x_pci_irq_unmask(struct
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{
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struct ar724x_pci_controller *apc;
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void __iomem *base;
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+ int offset;
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u32 t;
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apc = irq_data_get_irq_chip_data(d);
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base = apc->ctrl_base;
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+ offset = apc->irq_base - d->irq;
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- switch (d->irq) {
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- case ATH79_PCI_IRQ(0):
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+ switch (offset) {
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+ case 0:
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t = __raw_readl(base + AR724X_PCI_REG_INT_MASK);
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__raw_writel(t | AR724X_PCI_INT_DEV0,
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base + AR724X_PCI_REG_INT_MASK);
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@@ -234,13 +237,15 @@ static void ar724x_pci_irq_mask(struct i
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{
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struct ar724x_pci_controller *apc;
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void __iomem *base;
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+ int offset;
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u32 t;
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apc = irq_data_get_irq_chip_data(d);
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base = apc->ctrl_base;
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+ offset = apc->irq_base - d->irq;
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- switch (d->irq) {
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- case ATH79_PCI_IRQ(0):
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+ switch (offset) {
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+ case 0:
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t = __raw_readl(base + AR724X_PCI_REG_INT_MASK);
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__raw_writel(t & ~AR724X_PCI_INT_DEV0,
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base + AR724X_PCI_REG_INT_MASK);
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@@ -264,7 +269,8 @@ static struct irq_chip ar724x_pci_irq_ch
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.irq_mask_ack = ar724x_pci_irq_mask,
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};
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-static void ar724x_pci_irq_init(struct ar724x_pci_controller *apc)
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+static void ar724x_pci_irq_init(struct ar724x_pci_controller *apc,
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+ int id)
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{
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void __iomem *base;
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int i;
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@@ -274,10 +280,10 @@ static void ar724x_pci_irq_init(struct a
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__raw_writel(0, base + AR724X_PCI_REG_INT_MASK);
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__raw_writel(0, base + AR724X_PCI_REG_INT_STATUS);
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- BUILD_BUG_ON(ATH79_PCI_IRQ_COUNT < AR724X_PCI_IRQ_COUNT);
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+ apc->irq_base = ATH79_PCI_IRQ_BASE + (id * AR724X_PCI_IRQ_COUNT);
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- for (i = ATH79_PCI_IRQ_BASE;
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- i < ATH79_PCI_IRQ_BASE + AR724X_PCI_IRQ_COUNT; i++) {
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+ for (i = apc->irq_base;
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+ i < apc->irq_base + AR724X_PCI_IRQ_COUNT; i++) {
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irq_set_chip_and_handler(i, &ar724x_pci_irq_chip,
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handle_level_irq);
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irq_set_chip_data(i, apc);
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@@ -291,6 +297,11 @@ static int ar724x_pci_probe(struct platf
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{
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struct ar724x_pci_controller *apc;
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struct resource *res;
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+ int id;
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+
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+ id = pdev->id;
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+ if (id == -1)
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+ id = 0;
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apc = devm_kzalloc(&pdev->dev, sizeof(struct ar724x_pci_controller),
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GFP_KERNEL);
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@@ -347,7 +358,7 @@ static int ar724x_pci_probe(struct platf
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if (!apc->link_up)
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dev_warn(&pdev->dev, "PCIe link is down\n");
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- ar724x_pci_irq_init(apc);
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+ ar724x_pci_irq_init(apc, id);
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register_pci_controller(&apc->pci_controller);
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