summaryrefslogtreecommitdiff
path: root/target/linux/lantiq
diff options
context:
space:
mode:
Diffstat (limited to 'target/linux/lantiq')
-rw-r--r--target/linux/lantiq/files/arch/mips/lantiq/irq.c213
-rw-r--r--target/linux/lantiq/patches/100-board.patch215
2 files changed, 213 insertions, 215 deletions
diff --git a/target/linux/lantiq/files/arch/mips/lantiq/irq.c b/target/linux/lantiq/files/arch/mips/lantiq/irq.c
new file mode 100644
index 0000000000..d410b3238a
--- /dev/null
+++ b/target/linux/lantiq/files/arch/mips/lantiq/irq.c
@@ -0,0 +1,213 @@
+/*
+ * 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 201fa96737..161c4b1aad 100644
--- a/target/linux/lantiq/patches/100-board.patch
+++ b/target/linux/lantiq/patches/100-board.patch
@@ -83,221 +83,6 @@
+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 +1,212 @@
-+/*
-+ * 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;
-+}
---- /dev/null
+++ b/arch/mips/lantiq/setup.c
@@ -0,0 +1,47 @@
+/*
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-18 05:29:27 +0000