From 12d49b5195716dfebb65da590646c6ebd6cacf70 Mon Sep 17 00:00:00 2001 From: Gabor Juhos Date: Mon, 4 Mar 2013 11:48:06 +0000 Subject: ar71xx: use backported MISC IRQ patch Signed-off-by: Gabor Juhos SVN-Revision: 35876 --- ...009-MIPS-ath79-simplify-MISC-IRQ-handling.patch | 90 ++++++++++++++++++++++ ...add-IRQ-handling-code-for-the-QCA955X-SoC.patch | 14 ++-- ...210-MIPS-ath79-simplify-misc-irq-handling.patch | 66 ---------------- 3 files changed, 97 insertions(+), 73 deletions(-) create mode 100644 target/linux/ar71xx/patches-3.8/009-MIPS-ath79-simplify-MISC-IRQ-handling.patch delete mode 100644 target/linux/ar71xx/patches-3.8/210-MIPS-ath79-simplify-misc-irq-handling.patch (limited to 'target/linux/ar71xx') diff --git a/target/linux/ar71xx/patches-3.8/009-MIPS-ath79-simplify-MISC-IRQ-handling.patch b/target/linux/ar71xx/patches-3.8/009-MIPS-ath79-simplify-MISC-IRQ-handling.patch new file mode 100644 index 0000000000..146bf25cce --- /dev/null +++ b/target/linux/ar71xx/patches-3.8/009-MIPS-ath79-simplify-MISC-IRQ-handling.patch @@ -0,0 +1,90 @@ +From 1690e8f8efdeedbd23bb34a3bc5803c34f2d3f66 Mon Sep 17 00:00:00 2001 +From: Gabor Juhos +Date: Tue, 29 Jan 2013 16:13:17 +0000 +Subject: [PATCH] MIPS: ath79: simplify MISC IRQ handling + +commit 9c099c4e79b67d5578ce8142e6214950be4fcf43 upstream. + +The current code uses multiple if statements for +demultiplexing the different interrupt sources. +Additionally, the MISC interrupt controller has +32 interrupt sources and the current code does not +handles all of them. + +Get rid of the if statements and process all interrupt +sources in a loop to fix these issues. + +Signed-off-by: Gabor Juhos +Patchwork: http://patchwork.linux-mips.org/patch/4874/ +Signed-off-by: John Crispin +--- + arch/mips/ath79/irq.c | 45 +++++++------------------------- + arch/mips/include/asm/mach-ath79/irq.h | 1 + + 2 files changed, 10 insertions(+), 36 deletions(-) + +--- a/arch/mips/ath79/irq.c ++++ b/arch/mips/ath79/irq.c +@@ -35,44 +35,17 @@ static void ath79_misc_irq_handler(unsig + pending = __raw_readl(base + AR71XX_RESET_REG_MISC_INT_STATUS) & + __raw_readl(base + AR71XX_RESET_REG_MISC_INT_ENABLE); + +- if (pending & MISC_INT_UART) +- generic_handle_irq(ATH79_MISC_IRQ_UART); +- +- else if (pending & MISC_INT_DMA) +- generic_handle_irq(ATH79_MISC_IRQ_DMA); +- +- else if (pending & MISC_INT_PERFC) +- generic_handle_irq(ATH79_MISC_IRQ_PERFC); +- +- else if (pending & MISC_INT_TIMER) +- generic_handle_irq(ATH79_MISC_IRQ_TIMER); +- +- else if (pending & MISC_INT_TIMER2) +- generic_handle_irq(ATH79_MISC_IRQ_TIMER2); +- +- else if (pending & MISC_INT_TIMER3) +- generic_handle_irq(ATH79_MISC_IRQ_TIMER3); +- +- else if (pending & MISC_INT_TIMER4) +- generic_handle_irq(ATH79_MISC_IRQ_TIMER4); +- +- else if (pending & MISC_INT_OHCI) +- generic_handle_irq(ATH79_MISC_IRQ_OHCI); +- +- else if (pending & MISC_INT_ERROR) +- generic_handle_irq(ATH79_MISC_IRQ_ERROR); +- +- else if (pending & MISC_INT_GPIO) +- generic_handle_irq(ATH79_MISC_IRQ_GPIO); +- +- else if (pending & MISC_INT_WDOG) +- generic_handle_irq(ATH79_MISC_IRQ_WDOG); ++ if (!pending) { ++ spurious_interrupt(); ++ return; ++ } + +- else if (pending & MISC_INT_ETHSW) +- generic_handle_irq(ATH79_MISC_IRQ_ETHSW); ++ while (pending) { ++ int bit = __ffs(pending); + +- else +- spurious_interrupt(); ++ generic_handle_irq(ATH79_MISC_IRQ(bit)); ++ pending &= ~BIT(bit); ++ } + } + + static void ar71xx_misc_irq_unmask(struct irq_data *d) +--- a/arch/mips/include/asm/mach-ath79/irq.h ++++ b/arch/mips/include/asm/mach-ath79/irq.h +@@ -14,6 +14,7 @@ + + #define ATH79_MISC_IRQ_BASE 8 + #define ATH79_MISC_IRQ_COUNT 32 ++#define ATH79_MISC_IRQ(_x) (ATH79_MISC_IRQ_BASE + (_x)) + + #define ATH79_PCI_IRQ_BASE (ATH79_MISC_IRQ_BASE + ATH79_MISC_IRQ_COUNT) + #define ATH79_PCI_IRQ_COUNT 6 diff --git a/target/linux/ar71xx/patches-3.8/163-MIPS-ath79-add-IRQ-handling-code-for-the-QCA955X-SoC.patch b/target/linux/ar71xx/patches-3.8/163-MIPS-ath79-add-IRQ-handling-code-for-the-QCA955X-SoC.patch index 8d24c742d3..e30e4e7032 100644 --- a/target/linux/ar71xx/patches-3.8/163-MIPS-ath79-add-IRQ-handling-code-for-the-QCA955X-SoC.patch +++ b/target/linux/ar71xx/patches-3.8/163-MIPS-ath79-add-IRQ-handling-code-for-the-QCA955X-SoC.patch @@ -12,7 +12,7 @@ Signed-off-by: Gabor Juhos --- a/arch/mips/ath79/irq.c +++ b/arch/mips/ath79/irq.c -@@ -130,7 +130,10 @@ static void __init ath79_misc_irq_init(v +@@ -103,7 +103,10 @@ static void __init ath79_misc_irq_init(v if (soc_is_ar71xx() || soc_is_ar913x()) ath79_misc_irq_chip.irq_mask_ack = ar71xx_misc_irq_mask; @@ -24,7 +24,7 @@ Signed-off-by: Gabor Juhos ath79_misc_irq_chip.irq_ack = ar724x_misc_irq_ack; else BUG(); -@@ -177,6 +180,88 @@ static void ar934x_ip2_irq_init(void) +@@ -150,6 +153,88 @@ static void ar934x_ip2_irq_init(void) irq_set_chained_handler(ATH79_CPU_IRQ_IP2, ar934x_ip2_irq_dispatch); } @@ -113,7 +113,7 @@ Signed-off-by: Gabor Juhos asmlinkage void plat_irq_dispatch(void) { unsigned long pending; -@@ -212,6 +297,17 @@ asmlinkage void plat_irq_dispatch(void) +@@ -185,6 +270,17 @@ asmlinkage void plat_irq_dispatch(void) * Issue a flush in the handlers to ensure that the driver sees * the update. */ @@ -131,7 +131,7 @@ Signed-off-by: Gabor Juhos static void ar71xx_ip2_handler(void) { ath79_ddr_wb_flush(AR71XX_DDR_REG_FLUSH_PCI); -@@ -236,11 +332,6 @@ static void ar933x_ip2_handler(void) +@@ -209,11 +305,6 @@ static void ar933x_ip2_handler(void) do_IRQ(ATH79_CPU_IRQ_IP2); } @@ -143,7 +143,7 @@ Signed-off-by: Gabor Juhos static void ar71xx_ip3_handler(void) { ath79_ddr_wb_flush(AR71XX_DDR_REG_FLUSH_USB); -@@ -286,8 +377,11 @@ void __init arch_init_irq(void) +@@ -259,8 +350,11 @@ void __init arch_init_irq(void) ath79_ip2_handler = ar933x_ip2_handler; ath79_ip3_handler = ar933x_ip3_handler; } else if (soc_is_ar934x()) { @@ -156,7 +156,7 @@ Signed-off-by: Gabor Juhos } else { BUG(); } -@@ -298,4 +392,6 @@ void __init arch_init_irq(void) +@@ -271,4 +365,6 @@ void __init arch_init_irq(void) if (soc_is_ar934x()) ar934x_ip2_irq_init(); @@ -222,7 +222,7 @@ Signed-off-by: Gabor Juhos #define ATH79_MISC_IRQ_BASE 8 #define ATH79_MISC_IRQ_COUNT 32 -@@ -23,8 +23,13 @@ +@@ -24,8 +24,13 @@ #define ATH79_IP2_IRQ_COUNT 2 #define ATH79_IP2_IRQ(_x) (ATH79_IP2_IRQ_BASE + (_x)) diff --git a/target/linux/ar71xx/patches-3.8/210-MIPS-ath79-simplify-misc-irq-handling.patch b/target/linux/ar71xx/patches-3.8/210-MIPS-ath79-simplify-misc-irq-handling.patch deleted file mode 100644 index 84a8ca36fc..0000000000 --- a/target/linux/ar71xx/patches-3.8/210-MIPS-ath79-simplify-misc-irq-handling.patch +++ /dev/null @@ -1,66 +0,0 @@ ---- a/arch/mips/ath79/irq.c -+++ b/arch/mips/ath79/irq.c -@@ -35,44 +35,17 @@ static void ath79_misc_irq_handler(unsig - pending = __raw_readl(base + AR71XX_RESET_REG_MISC_INT_STATUS) & - __raw_readl(base + AR71XX_RESET_REG_MISC_INT_ENABLE); - -- if (pending & MISC_INT_UART) -- generic_handle_irq(ATH79_MISC_IRQ_UART); -- -- else if (pending & MISC_INT_DMA) -- generic_handle_irq(ATH79_MISC_IRQ_DMA); -- -- else if (pending & MISC_INT_PERFC) -- generic_handle_irq(ATH79_MISC_IRQ_PERFC); -- -- else if (pending & MISC_INT_TIMER) -- generic_handle_irq(ATH79_MISC_IRQ_TIMER); -- -- else if (pending & MISC_INT_TIMER2) -- generic_handle_irq(ATH79_MISC_IRQ_TIMER2); -- -- else if (pending & MISC_INT_TIMER3) -- generic_handle_irq(ATH79_MISC_IRQ_TIMER3); -- -- else if (pending & MISC_INT_TIMER4) -- generic_handle_irq(ATH79_MISC_IRQ_TIMER4); -- -- else if (pending & MISC_INT_OHCI) -- generic_handle_irq(ATH79_MISC_IRQ_OHCI); -- -- else if (pending & MISC_INT_ERROR) -- generic_handle_irq(ATH79_MISC_IRQ_ERROR); -- -- else if (pending & MISC_INT_GPIO) -- generic_handle_irq(ATH79_MISC_IRQ_GPIO); -- -- else if (pending & MISC_INT_WDOG) -- generic_handle_irq(ATH79_MISC_IRQ_WDOG); -+ if (!pending) { -+ spurious_interrupt(); -+ return; -+ } - -- else if (pending & MISC_INT_ETHSW) -- generic_handle_irq(ATH79_MISC_IRQ_ETHSW); -+ while (pending) { -+ int bit = __ffs(pending); - -- else -- spurious_interrupt(); -+ generic_handle_irq(ATH79_MISC_IRQ(bit)); -+ pending &= ~BIT(bit); -+ } - } - - static void ar71xx_misc_irq_unmask(struct irq_data *d) ---- a/arch/mips/include/asm/mach-ath79/irq.h -+++ b/arch/mips/include/asm/mach-ath79/irq.h -@@ -14,6 +14,7 @@ - - #define ATH79_MISC_IRQ_BASE 8 - #define ATH79_MISC_IRQ_COUNT 32 -+#define ATH79_MISC_IRQ(_x) (ATH79_MISC_IRQ_BASE + (_x)) - - #define ATH79_PCI_IRQ_BASE (ATH79_MISC_IRQ_BASE + ATH79_MISC_IRQ_COUNT) - #define ATH79_PCI_IRQ_COUNT 6 -- cgit v1.2.3