ar71xx: use backported PCI patches

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@35877 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 105 insertions, 0 deletions

diff --git a/target/linux/ar71xx/patches-3.8/023-MIPS-pci-ar71xx-move-irq-base-to-the-controller-stru.patch b/target/linux/ar71xx/patches-3.8/023-MIPS-pci-ar71xx-move-irq-base-to-the-controller-stru.patch
new file mode 100644
index 000000000..78c2f07e5
--- /dev/null
+++ b/target/linux/ar71xx/patches-3.8/023-MIPS-pci-ar71xx-move-irq-base-to-the-controller-stru.patch
@@ -0,0 +1,105 @@
+From bec8339e917651e51592dd57ed005f8ccd9b0e8d Mon Sep 17 00:00:00 2001
+From: Gabor Juhos <juhosg@openwrt.org>
+Date: Thu, 7 Feb 2013 19:29:38 +0000
+Subject: [PATCH] MIPS: pci-ar71xx: move irq base to the controller structure
+
+commit 326e8d17d73fdf213f6334917ef46b2ba7b1354a upstream.
+
+Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
+Patchwork: http://patchwork.linux-mips.org/patch/4928/
+Signed-off-by: John Crispin <blogic@openwrt.org>
+---
+ arch/mips/pci/pci-ar71xx.c |   32 ++++++++++++++++++++++++--------
+ 1 file changed, 24 insertions(+), 8 deletions(-)
+
+--- a/arch/mips/pci/pci-ar71xx.c
++++ b/arch/mips/pci/pci-ar71xx.c
+@@ -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;
+@@ -238,23 +239,26 @@ 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();
+@@ -262,10 +266,14 @@ static void ar71xx_pci_irq_handler(unsig
+ 
+ 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);
+ 
+@@ -275,10 +283,14 @@ static void ar71xx_pci_irq_unmask(struct
+ 
+ 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);
+ 
+@@ -303,11 +315,15 @@ static void ar71xx_pci_irq_init(struct a
+ 
+ 	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);
+ }
+