diff options
Diffstat (limited to 'target/linux')
| -rw-r--r-- | target/linux/lantiq/files/arch/mips/lantiq/irq.c | 213 | ||||
| -rw-r--r-- | target/linux/lantiq/patches/100-board.patch | 227 |
2 files changed, 224 insertions, 216 deletions
diff --git a/target/linux/lantiq/files/arch/mips/lantiq/irq.c b/target/linux/lantiq/files/arch/mips/lantiq/irq.c deleted file mode 100644 index d410b32..0000000 --- a/target/linux/lantiq/files/arch/mips/lantiq/irq.c +++ /dev/null @@ -1,213 +0,0 @@ -/* - * 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 - * by the Free Software Foundation. - * - * Copyright (C) 2010 John Crispin <blogic@openwrt.org> - */ - -#include <linux/module.h> -#include <linux/interrupt.h> - -#include <asm/bootinfo.h> -#include <asm/irq_cpu.h> - -#include <lantiq.h> -#include <irq.h> - -#define LQ_ICU_BASE_ADDR (KSEG1 | 0x1F880200) - -#define LQ_ICU_IM0_ISR ((u32 *)(LQ_ICU_BASE_ADDR + 0x0000)) -#define LQ_ICU_IM0_IER ((u32 *)(LQ_ICU_BASE_ADDR + 0x0008)) -#define LQ_ICU_IM0_IOSR ((u32 *)(LQ_ICU_BASE_ADDR + 0x0010)) -#define LQ_ICU_IM0_IRSR ((u32 *)(LQ_ICU_BASE_ADDR + 0x0018)) -#define LQ_ICU_IM0_IMR ((u32 *)(LQ_ICU_BASE_ADDR + 0x0020)) - -#define LQ_ICU_IM1_ISR ((u32 *)(LQ_ICU_BASE_ADDR + 0x0028)) -#define LQ_ICU_IM2_ISR ((u32 *)(LQ_ICU_BASE_ADDR + 0x0050)) -#define LQ_ICU_IM3_ISR ((u32 *)(LQ_ICU_BASE_ADDR + 0x0078)) -#define LQ_ICU_IM4_ISR ((u32 *)(LQ_ICU_BASE_ADDR + 0x00A0)) - -#define LQ_ICU_OFFSET (LQ_ICU_IM1_ISR - LQ_ICU_IM0_ISR) - -void -lq_disable_irq(unsigned int irq_nr) -{ - u32 *ier = LQ_ICU_IM0_IER; - irq_nr -= INT_NUM_IRQ0; - ier += LQ_ICU_OFFSET * (irq_nr / INT_NUM_IM_OFFSET); - irq_nr %= INT_NUM_IM_OFFSET; - lq_w32(lq_r32(ier) & ~(1 << irq_nr), ier); -} -EXPORT_SYMBOL(lq_disable_irq); - -void -lq_mask_and_ack_irq(unsigned int irq_nr) -{ - u32 *ier = LQ_ICU_IM0_IER; - u32 *isr = LQ_ICU_IM0_ISR; - irq_nr -= INT_NUM_IRQ0; - ier += LQ_ICU_OFFSET * (irq_nr / INT_NUM_IM_OFFSET); - isr += LQ_ICU_OFFSET * (irq_nr / INT_NUM_IM_OFFSET); - irq_nr %= INT_NUM_IM_OFFSET; - lq_w32(lq_r32(ier) & ~(1 << irq_nr), ier); - lq_w32((1 << irq_nr), isr); -} -EXPORT_SYMBOL(lq_mask_and_ack_irq); - -static void -lq_ack_irq(unsigned int irq_nr) -{ - u32 *isr = LQ_ICU_IM0_ISR; - irq_nr -= INT_NUM_IRQ0; - isr += LQ_ICU_OFFSET * (irq_nr / INT_NUM_IM_OFFSET); - irq_nr %= INT_NUM_IM_OFFSET; - lq_w32((1 << irq_nr), isr); -} - -void -lq_enable_irq(unsigned int irq_nr) -{ - u32 *ier = LQ_ICU_IM0_IER; - irq_nr -= INT_NUM_IRQ0; - ier += LQ_ICU_OFFSET * (irq_nr / INT_NUM_IM_OFFSET); - irq_nr %= INT_NUM_IM_OFFSET; - lq_w32(lq_r32(ier) | (1 << irq_nr), ier); -} -EXPORT_SYMBOL(lq_enable_irq); - -static unsigned int -lq_startup_irq(unsigned int irq) -{ - lq_enable_irq(irq); - return 0; -} - -static void -lq_end_irq(unsigned int irq) -{ - if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS))) - lq_enable_irq(irq); -} - -static struct irq_chip -lq_irq_type = { - "lq_irq", - .startup = lq_startup_irq, - .enable = lq_enable_irq, - .disable = lq_disable_irq, - .unmask = lq_enable_irq, - .ack = lq_ack_irq, - .mask = lq_disable_irq, - .mask_ack = lq_mask_and_ack_irq, - .end = lq_end_irq, -}; - -static void -lq_hw_irqdispatch(int module) -{ - u32 irq; - - irq = lq_r32(LQ_ICU_IM0_IOSR + (module * LQ_ICU_OFFSET)); - if (irq == 0) - return; - - /* silicon bug causes only the msb set to 1 to be valid. all - other bits might be bogus */ - irq = __fls(irq); - do_IRQ((int)irq + INT_NUM_IM0_IRL0 + (INT_NUM_IM_OFFSET * module)); -} - -#define DEFINE_HWx_IRQDISPATCH(x) \ -static void lq_hw ## x ## _irqdispatch(void)\ -{\ - lq_hw_irqdispatch(x); \ -} -static void lq_hw5_irqdispatch(void) -{ - do_IRQ(MIPS_CPU_TIMER_IRQ); -} -DEFINE_HWx_IRQDISPATCH(0) -DEFINE_HWx_IRQDISPATCH(1) -DEFINE_HWx_IRQDISPATCH(2) -DEFINE_HWx_IRQDISPATCH(3) -DEFINE_HWx_IRQDISPATCH(4) -/*DEFINE_HWx_IRQDISPATCH(5)*/ - -asmlinkage void -plat_irq_dispatch(void) -{ - unsigned int pending = read_c0_status() & read_c0_cause() & ST0_IM; - unsigned int i; - - if (pending & CAUSEF_IP7) - { - do_IRQ(MIPS_CPU_TIMER_IRQ); - goto out; - } else { - for (i = 0; i < 5; i++) - { - if (pending & (CAUSEF_IP2 << i)) - { - lq_hw_irqdispatch(i); - goto out; - } - } - } - printk(KERN_ALERT "Spurious IRQ: CAUSE=0x%08x\n", read_c0_status()); - -out: - return; -} - -static struct irqaction -cascade = { - .handler = no_action, - .flags = IRQF_DISABLED, - .name = "cascade", -}; - -void __init -arch_init_irq(void) -{ - int i; - - for (i = 0; i < 5; i++) - lq_w32(0, LQ_ICU_IM0_IER + (i * LQ_ICU_OFFSET)); - - mips_cpu_irq_init(); - - for (i = 2; i <= 6; i++) - setup_irq(i, &cascade); - - if (cpu_has_vint) { - printk(KERN_INFO "Setting up vectored interrupts\n"); - set_vi_handler(2, lq_hw0_irqdispatch); - set_vi_handler(3, lq_hw1_irqdispatch); - set_vi_handler(4, lq_hw2_irqdispatch); - set_vi_handler(5, lq_hw3_irqdispatch); - set_vi_handler(6, lq_hw4_irqdispatch); - set_vi_handler(7, lq_hw5_irqdispatch); - } - - for (i = INT_NUM_IRQ0; i <= (INT_NUM_IRQ0 + (5 * INT_NUM_IM_OFFSET)); i++) - set_irq_chip_and_handler(i, &lq_irq_type, - handle_level_irq); - - #if !defined(CONFIG_MIPS_MT_SMP) && !defined(CONFIG_MIPS_MT_SMTC) - set_c0_status(IE_IRQ0 | IE_IRQ1 | IE_IRQ2 | - IE_IRQ3 | IE_IRQ4 | IE_IRQ5); - #else - set_c0_status(IE_SW0 | IE_SW1 | IE_IRQ0 | IE_IRQ1 | - IE_IRQ2 | IE_IRQ3 | IE_IRQ4 | IE_IRQ5); - #endif -} - -void __cpuinit -arch_fixup_c0_irqs(void) -{ - /* FIXME: check for CPUID and only do fix for specific chips/versions */ - cp0_compare_irq = CP0_LEGACY_COMPARE_IRQ; - cp0_perfcount_irq = CP0_LEGACY_PERFCNT_IRQ; -} - diff --git a/target/linux/lantiq/patches/100-board.patch b/target/linux/lantiq/patches/100-board.patch index 161c4b1..6e9d2c7 100644 --- a/target/linux/lantiq/patches/100-board.patch +++ b/target/linux/lantiq/patches/100-board.patch @@ -1,6 +1,6 @@ --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig -@@ -139,6 +139,9 @@ config MACH_DECSTATION +@@ -139,6 +139,9 @@ otherwise choose R3000. @@ -10,7 +10,7 @@ config MACH_JAZZ bool "Jazz family of machines" select ARC -@@ -693,6 +696,7 @@ source "arch/mips/txx9/Kconfig" +@@ -695,6 +698,7 @@ source "arch/mips/vr41xx/Kconfig" source "arch/mips/cavium-octeon/Kconfig" source "arch/mips/loongson/Kconfig" @@ -20,7 +20,7 @@ --- a/arch/mips/Makefile +++ b/arch/mips/Makefile -@@ -317,6 +317,17 @@ cflags-$(CONFIG_MIPS_COBALT) += -I$(srct +@@ -339,6 +339,17 @@ load-$(CONFIG_MIPS_COBALT) += 0xffffffff80080000 # @@ -83,6 +83,227 @@ +obj-y := irq.o setup.o clk.o prom.o +obj-$(CONFIG_EARLY_PRINTK) += early_printk.o --- /dev/null ++++ b/arch/mips/lantiq/irq.c +@@ -0,0 +1,218 @@ ++/* ++ * 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 ++ * by the Free Software Foundation. ++ * ++ * Copyright (C) 2010 John Crispin <blogic@openwrt.org> ++ */ ++ ++#include <linux/module.h> ++#include <linux/interrupt.h> ++ ++#include <asm/bootinfo.h> ++#include <asm/irq_cpu.h> ++ ++#include <lantiq.h> ++#include <irq.h> ++ ++#define LQ_ICU_BASE_ADDR (KSEG1 | 0x1F880200) ++ ++#define LQ_ICU_IM0_ISR ((u32 *)(LQ_ICU_BASE_ADDR + 0x0000)) ++#define LQ_ICU_IM0_IER ((u32 *)(LQ_ICU_BASE_ADDR + 0x0008)) ++#define LQ_ICU_IM0_IOSR ((u32 *)(LQ_ICU_BASE_ADDR + 0x0010)) ++#define LQ_ICU_IM0_IRSR ((u32 *)(LQ_ICU_BASE_ADDR + 0x0018)) ++#define LQ_ICU_IM0_IMR ((u32 *)(LQ_ICU_BASE_ADDR + 0x0020)) ++ ++#define LQ_ICU_IM1_ISR ((u32 *)(LQ_ICU_BASE_ADDR + 0x0028)) ++#define LQ_ICU_IM2_ISR ((u32 *)(LQ_ICU_BASE_ADDR + 0x0050)) ++#define LQ_ICU_IM3_ISR ((u32 *)(LQ_ICU_BASE_ADDR + 0x0078)) ++#define LQ_ICU_IM4_ISR ((u32 *)(LQ_ICU_BASE_ADDR + 0x00A0)) ++ ++#define LQ_ICU_OFFSET (LQ_ICU_IM1_ISR - LQ_ICU_IM0_ISR) ++ ++#define LQ_EBU_BASE_ADDR 0xBE105300 ++#define LQ_EBU_PCC_ISTAT ((u32 *)(LQ_EBU_BASE_ADDR + 0x00A0)) ++ ++void ++lq_disable_irq(unsigned int irq_nr) ++{ ++ u32 *ier = LQ_ICU_IM0_IER; ++ irq_nr -= INT_NUM_IRQ0; ++ ier += LQ_ICU_OFFSET * (irq_nr / INT_NUM_IM_OFFSET); ++ irq_nr %= INT_NUM_IM_OFFSET; ++ lq_w32(lq_r32(ier) & ~(1 << irq_nr), ier); ++} ++EXPORT_SYMBOL(lq_disable_irq); ++ ++void ++lq_mask_and_ack_irq(unsigned int irq_nr) ++{ ++ u32 *ier = LQ_ICU_IM0_IER; ++ u32 *isr = LQ_ICU_IM0_ISR; ++ irq_nr -= INT_NUM_IRQ0; ++ ier += LQ_ICU_OFFSET * (irq_nr / INT_NUM_IM_OFFSET); ++ isr += LQ_ICU_OFFSET * (irq_nr / INT_NUM_IM_OFFSET); ++ irq_nr %= INT_NUM_IM_OFFSET; ++ lq_w32(lq_r32(ier) & ~(1 << irq_nr), ier); ++ lq_w32((1 << irq_nr), isr); ++} ++EXPORT_SYMBOL(lq_mask_and_ack_irq); ++ ++static void ++lq_ack_irq(unsigned int irq_nr) ++{ ++ u32 *isr = LQ_ICU_IM0_ISR; ++ irq_nr -= INT_NUM_IRQ0; ++ isr += LQ_ICU_OFFSET * (irq_nr / INT_NUM_IM_OFFSET); ++ irq_nr %= INT_NUM_IM_OFFSET; ++ lq_w32((1 << irq_nr), isr); ++} ++ ++void ++lq_enable_irq(unsigned int irq_nr) ++{ ++ u32 *ier = LQ_ICU_IM0_IER; ++ irq_nr -= INT_NUM_IRQ0; ++ ier += LQ_ICU_OFFSET * (irq_nr / INT_NUM_IM_OFFSET); ++ irq_nr %= INT_NUM_IM_OFFSET; ++ lq_w32(lq_r32(ier) | (1 << irq_nr), ier); ++} ++EXPORT_SYMBOL(lq_enable_irq); ++ ++static unsigned int ++lq_startup_irq(unsigned int irq) ++{ ++ lq_enable_irq(irq); ++ return 0; ++} ++ ++static void ++lq_end_irq(unsigned int irq) ++{ ++ if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS))) ++ lq_enable_irq(irq); ++} ++ ++static struct irq_chip ++lq_irq_type = { ++ "lq_irq", ++ .startup = lq_startup_irq, ++ .enable = lq_enable_irq, ++ .disable = lq_disable_irq, ++ .unmask = lq_enable_irq, ++ .ack = lq_ack_irq, ++ .mask = lq_disable_irq, ++ .mask_ack = lq_mask_and_ack_irq, ++ .end = lq_end_irq, ++}; ++ ++static void ++lq_hw_irqdispatch(int module) ++{ ++ u32 irq; ++ ++ irq = lq_r32(LQ_ICU_IM0_IOSR + (module * LQ_ICU_OFFSET)); ++ if (irq == 0) ++ return; ++ ++ /* silicon bug causes only the msb set to 1 to be valid. all ++ other bits might be bogus */ ++ irq = __fls(irq); ++ do_IRQ((int)irq + INT_NUM_IM0_IRL0 + (INT_NUM_IM_OFFSET * module)); ++ if ((irq == 22) && (module == 0)) ++ lq_w32(lq_r32(LQ_EBU_PCC_ISTAT) | 0x10, ++ LQ_EBU_PCC_ISTAT); ++} ++ ++#define DEFINE_HWx_IRQDISPATCH(x) \ ++static void lq_hw ## x ## _irqdispatch(void)\ ++{\ ++ lq_hw_irqdispatch(x); \ ++} ++static void lq_hw5_irqdispatch(void) ++{ ++ do_IRQ(MIPS_CPU_TIMER_IRQ); ++} ++DEFINE_HWx_IRQDISPATCH(0) ++DEFINE_HWx_IRQDISPATCH(1) ++DEFINE_HWx_IRQDISPATCH(2) ++DEFINE_HWx_IRQDISPATCH(3) ++DEFINE_HWx_IRQDISPATCH(4) ++/*DEFINE_HWx_IRQDISPATCH(5)*/ ++ ++asmlinkage void ++plat_irq_dispatch(void) ++{ ++ unsigned int pending = read_c0_status() & read_c0_cause() & ST0_IM; ++ unsigned int i; ++ ++ if (pending & CAUSEF_IP7) ++ { ++ do_IRQ(MIPS_CPU_TIMER_IRQ); ++ goto out; ++ } else { ++ for (i = 0; i < 5; i++) ++ { ++ if (pending & (CAUSEF_IP2 << i)) ++ { ++ lq_hw_irqdispatch(i); ++ goto out; ++ } ++ } ++ } ++ printk(KERN_ALERT "Spurious IRQ: CAUSE=0x%08x\n", read_c0_status()); ++ ++out: ++ return; ++} ++ ++static struct irqaction ++cascade = { ++ .handler = no_action, ++ .flags = IRQF_DISABLED, ++ .name = "cascade", ++}; ++ ++void __init ++arch_init_irq(void) ++{ ++ int i; ++ ++ for (i = 0; i < 5; i++) ++ lq_w32(0, LQ_ICU_IM0_IER + (i * LQ_ICU_OFFSET)); ++ ++ mips_cpu_irq_init(); ++ ++ for (i = 2; i <= 6; i++) ++ setup_irq(i, &cascade); ++ ++ if (cpu_has_vint) { ++ printk(KERN_INFO "Setting up vectored interrupts\n"); ++ set_vi_handler(2, lq_hw0_irqdispatch); ++ set_vi_handler(3, lq_hw1_irqdispatch); ++ set_vi_handler(4, lq_hw2_irqdispatch); ++ set_vi_handler(5, lq_hw3_irqdispatch); ++ set_vi_handler(6, lq_hw4_irqdispatch); ++ set_vi_handler(7, lq_hw5_irqdispatch); ++ } ++ ++ for (i = INT_NUM_IRQ0; i <= (INT_NUM_IRQ0 + (5 * INT_NUM_IM_OFFSET)); i++) ++ set_irq_chip_and_handler(i, &lq_irq_type, ++ handle_level_irq); ++ ++ #if !defined(CONFIG_MIPS_MT_SMP) && !defined(CONFIG_MIPS_MT_SMTC) ++ set_c0_status(IE_IRQ0 | IE_IRQ1 | IE_IRQ2 | ++ IE_IRQ3 | IE_IRQ4 | IE_IRQ5); ++ #else ++ set_c0_status(IE_SW0 | IE_SW1 | IE_IRQ0 | IE_IRQ1 | ++ IE_IRQ2 | IE_IRQ3 | IE_IRQ4 | IE_IRQ5); ++ #endif ++} ++ ++void __cpuinit ++arch_fixup_c0_irqs(void) ++{ ++ /* FIXME: check for CPUID and only do fix for specific chips/versions */ ++ cp0_compare_irq = CP0_LEGACY_COMPARE_IRQ; ++ cp0_perfcount_irq = CP0_LEGACY_PERFCNT_IRQ; ++} +--- /dev/null +++ b/arch/mips/lantiq/setup.c @@ -0,0 +1,47 @@ +/* |