diff options
Diffstat (limited to 'target/linux/ar71xx/patches-3.3/125-MIPS-ath79-add-IRQ-handling-code-for-AR934X.patch')
| -rw-r--r-- | target/linux/ar71xx/patches-3.3/125-MIPS-ath79-add-IRQ-handling-code-for-AR934X.patch | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/target/linux/ar71xx/patches-3.3/125-MIPS-ath79-add-IRQ-handling-code-for-AR934X.patch b/target/linux/ar71xx/patches-3.3/125-MIPS-ath79-add-IRQ-handling-code-for-AR934X.patch new file mode 100644 index 0000000000..1268077255 --- /dev/null +++ b/target/linux/ar71xx/patches-3.3/125-MIPS-ath79-add-IRQ-handling-code-for-AR934X.patch @@ -0,0 +1,194 @@ +From b16fdecf14d24fe213c81409c0c2dca66d5b7bc9 Mon Sep 17 00:00:00 2001 +From: Gabor Juhos <juhosg@openwrt.org> +Date: Wed, 14 Mar 2012 10:45:25 +0100 +Subject: [PATCH 30/47] MIPS: ath79: add IRQ handling code for AR934X + +Signed-off-by: Gabor Juhos <juhosg@openwrt.org> +Acked-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com> +Cc: linux-mips@linux-mips.org +Cc: mcgrof@infradead.org +Patchwork: https://patchwork.linux-mips.org/patch/3510/ +Signed-off-by: Ralf Baechle <ralf@linux-mips.org> +--- + arch/mips/ath79/irq.c | 55 +++++++++++++++++++++++- + arch/mips/include/asm/mach-ath79/ar71xx_regs.h | 25 +++++++++++ + arch/mips/include/asm/mach-ath79/irq.h | 6 ++- + 3 files changed, 83 insertions(+), 3 deletions(-) + +--- a/arch/mips/ath79/irq.c ++++ b/arch/mips/ath79/irq.c +@@ -1,10 +1,11 @@ + /* + * Atheros AR71xx/AR724x/AR913x specific interrupt handling + * ++ * Copyright (C) 2010-2011 Jaiganesh Narayanan <jnarayanan@atheros.com> + * Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org> + * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org> + * +- * Parts of this file are based on Atheros' 2.6.15 BSP ++ * Parts of this file are based on Atheros' 2.6.15/2.6.31 BSP + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published +@@ -129,7 +130,7 @@ 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; +- else if (soc_is_ar724x() || soc_is_ar933x()) ++ else if (soc_is_ar724x() || soc_is_ar933x() || soc_is_ar934x()) + ath79_misc_irq_chip.irq_ack = ar724x_misc_irq_ack; + else + BUG(); +@@ -143,6 +144,39 @@ static void __init ath79_misc_irq_init(v + irq_set_chained_handler(ATH79_CPU_IRQ_MISC, ath79_misc_irq_handler); + } + ++static void ar934x_ip2_irq_dispatch(unsigned int irq, struct irq_desc *desc) ++{ ++ u32 status; ++ ++ disable_irq_nosync(irq); ++ ++ status = ath79_reset_rr(AR934X_RESET_REG_PCIE_WMAC_INT_STATUS); ++ ++ if (status & AR934X_PCIE_WMAC_INT_PCIE_ALL) { ++ ath79_ddr_wb_flush(AR934X_DDR_REG_FLUSH_PCIE); ++ generic_handle_irq(ATH79_IP2_IRQ(0)); ++ } else if (status & AR934X_PCIE_WMAC_INT_WMAC_ALL) { ++ ath79_ddr_wb_flush(AR934X_DDR_REG_FLUSH_WMAC); ++ generic_handle_irq(ATH79_IP2_IRQ(1)); ++ } else { ++ spurious_interrupt(); ++ } ++ ++ enable_irq(irq); ++} ++ ++static void ar934x_ip2_irq_init(void) ++{ ++ int i; ++ ++ for (i = ATH79_IP2_IRQ_BASE; ++ i < ATH79_IP2_IRQ_BASE + ATH79_IP2_IRQ_COUNT; i++) ++ irq_set_chip_and_handler(i, &dummy_irq_chip, ++ handle_level_irq); ++ ++ irq_set_chained_handler(ATH79_CPU_IRQ_IP2, ar934x_ip2_irq_dispatch); ++} ++ + asmlinkage void plat_irq_dispatch(void) + { + unsigned long pending; +@@ -202,6 +236,11 @@ static void ar933x_ip2_handler(void) + do_IRQ(ATH79_CPU_IRQ_IP2); + } + ++static void ar934x_ip2_handler(void) ++{ ++ do_IRQ(ATH79_CPU_IRQ_IP2); ++} ++ + static void ar71xx_ip3_handler(void) + { + ath79_ddr_wb_flush(AR71XX_DDR_REG_FLUSH_USB); +@@ -226,6 +265,12 @@ static void ar933x_ip3_handler(void) + do_IRQ(ATH79_CPU_IRQ_USB); + } + ++static void ar934x_ip3_handler(void) ++{ ++ ath79_ddr_wb_flush(AR934X_DDR_REG_FLUSH_USB); ++ do_IRQ(ATH79_CPU_IRQ_USB); ++} ++ + void __init arch_init_irq(void) + { + if (soc_is_ar71xx()) { +@@ -240,6 +285,9 @@ void __init arch_init_irq(void) + } else if (soc_is_ar933x()) { + ath79_ip2_handler = ar933x_ip2_handler; + ath79_ip3_handler = ar933x_ip3_handler; ++ } else if (soc_is_ar934x()) { ++ ath79_ip2_handler = ar934x_ip2_handler; ++ ath79_ip3_handler = ar934x_ip3_handler; + } else { + BUG(); + } +@@ -247,4 +295,7 @@ void __init arch_init_irq(void) + cp0_perfcount_irq = ATH79_MISC_IRQ_PERFC; + mips_cpu_irq_init(); + ath79_misc_irq_init(); ++ ++ if (soc_is_ar934x()) ++ ar934x_ip2_irq_init(); + } +--- a/arch/mips/include/asm/mach-ath79/ar71xx_regs.h ++++ b/arch/mips/include/asm/mach-ath79/ar71xx_regs.h +@@ -92,6 +92,12 @@ + #define AR933X_DDR_REG_FLUSH_USB 0x84 + #define AR933X_DDR_REG_FLUSH_WMAC 0x88 + ++#define AR934X_DDR_REG_FLUSH_GE0 0x9c ++#define AR934X_DDR_REG_FLUSH_GE1 0xa0 ++#define AR934X_DDR_REG_FLUSH_USB 0xa4 ++#define AR934X_DDR_REG_FLUSH_PCIE 0xa8 ++#define AR934X_DDR_REG_FLUSH_WMAC 0xac ++ + /* + * PLL block + */ +@@ -222,6 +228,7 @@ + #define AR933X_RESET_REG_BOOTSTRAP 0xac + + #define AR934X_RESET_REG_BOOTSTRAP 0xb0 ++#define AR934X_RESET_REG_PCIE_WMAC_INT_STATUS 0xac + + #define MISC_INT_ETHSW BIT(12) + #define MISC_INT_TIMER4 BIT(10) +@@ -295,6 +302,24 @@ + #define AR934X_BOOTSTRAP_SDRAM_DISABLED BIT(1) + #define AR934X_BOOTSTRAP_DDR1 BIT(0) + ++#define AR934X_PCIE_WMAC_INT_WMAC_MISC BIT(0) ++#define AR934X_PCIE_WMAC_INT_WMAC_TX BIT(1) ++#define AR934X_PCIE_WMAC_INT_WMAC_RXLP BIT(2) ++#define AR934X_PCIE_WMAC_INT_WMAC_RXHP BIT(3) ++#define AR934X_PCIE_WMAC_INT_PCIE_RC BIT(4) ++#define AR934X_PCIE_WMAC_INT_PCIE_RC0 BIT(5) ++#define AR934X_PCIE_WMAC_INT_PCIE_RC1 BIT(6) ++#define AR934X_PCIE_WMAC_INT_PCIE_RC2 BIT(7) ++#define AR934X_PCIE_WMAC_INT_PCIE_RC3 BIT(8) ++#define AR934X_PCIE_WMAC_INT_WMAC_ALL \ ++ (AR934X_PCIE_WMAC_INT_WMAC_MISC | AR934X_PCIE_WMAC_INT_WMAC_TX | \ ++ AR934X_PCIE_WMAC_INT_WMAC_RXLP | AR934X_PCIE_WMAC_INT_WMAC_RXHP) ++ ++#define AR934X_PCIE_WMAC_INT_PCIE_ALL \ ++ (AR934X_PCIE_WMAC_INT_PCIE_RC | AR934X_PCIE_WMAC_INT_PCIE_RC0 | \ ++ AR934X_PCIE_WMAC_INT_PCIE_RC1 | AR934X_PCIE_WMAC_INT_PCIE_RC2 | \ ++ AR934X_PCIE_WMAC_INT_PCIE_RC3) ++ + #define REV_ID_MAJOR_MASK 0xfff0 + #define REV_ID_MAJOR_AR71XX 0x00a0 + #define REV_ID_MAJOR_AR913X 0x00b0 +--- a/arch/mips/include/asm/mach-ath79/irq.h ++++ b/arch/mips/include/asm/mach-ath79/irq.h +@@ -10,7 +10,7 @@ + #define __ASM_MACH_ATH79_IRQ_H + + #define MIPS_CPU_IRQ_BASE 0 +-#define NR_IRQS 46 ++#define NR_IRQS 48 + + #define ATH79_MISC_IRQ_BASE 8 + #define ATH79_MISC_IRQ_COUNT 32 +@@ -19,6 +19,10 @@ + #define ATH79_PCI_IRQ_COUNT 6 + #define ATH79_PCI_IRQ(_x) (ATH79_PCI_IRQ_BASE + (_x)) + ++#define ATH79_IP2_IRQ_BASE (ATH79_PCI_IRQ_BASE + ATH79_PCI_IRQ_COUNT) ++#define ATH79_IP2_IRQ_COUNT 2 ++#define ATH79_IP2_IRQ(_x) (ATH79_IP2_IRQ_BASE + (_x)) ++ + #define ATH79_CPU_IRQ_IP2 (MIPS_CPU_IRQ_BASE + 2) + #define ATH79_CPU_IRQ_USB (MIPS_CPU_IRQ_BASE + 3) + #define ATH79_CPU_IRQ_GE0 (MIPS_CPU_IRQ_BASE + 4) |