From c54619680fce4fd697595bd69f3ab7f7d40fa161 Mon Sep 17 00:00:00 2001 From: Mike Baker Date: Thu, 9 Feb 2006 22:20:42 +0000 Subject: [PATCH] finally fix pesky irq issues SVN-Revision: 3207 --- .../linux/aruba-2.6/patches/000-aruba.patch | 3 +- .../linux/aruba-2.6/patches/002-irq.patch | 177 ++++++++++-------- 2 files changed, 105 insertions(+), 75 deletions(-) diff --git a/openwrt/target/linux/aruba-2.6/patches/000-aruba.patch b/openwrt/target/linux/aruba-2.6/patches/000-aruba.patch index f25523044d9..dda15ed1c6c 100644 --- a/openwrt/target/linux/aruba-2.6/patches/000-aruba.patch +++ b/openwrt/target/linux/aruba-2.6/patches/000-aruba.patch @@ -1057,14 +1057,13 @@ diff -Nur linux-2.6.15/arch/mips/aruba/wdt_merlot.c linux-2.6.15-openwrt/arch/mi diff -Nur linux-2.6.15/arch/mips/Kconfig linux-2.6.15-openwrt/arch/mips/Kconfig --- linux-2.6.15/arch/mips/Kconfig 2006-01-03 04:21:10.000000000 +0100 +++ linux-2.6.15-openwrt/arch/mips/Kconfig 2006-01-10 00:32:32.000000000 +0100 -@@ -227,6 +227,18 @@ +@@ -227,6 +227,17 @@ either a NEC Vr5432 or QED RM5231. Say Y here if you wish to build a kernel for this platform. +config MACH_ARUBA + bool "Support for the ARUBA product line" + select DMA_NONCOHERENT -+ select IRQ_CPU + select CPU_HAS_PREFETCH + select HW_HAS_PCI + select SWAP_IO_SPACE diff --git a/openwrt/target/linux/aruba-2.6/patches/002-irq.patch b/openwrt/target/linux/aruba-2.6/patches/002-irq.patch index d789a2104b6..308c39903d5 100644 --- a/openwrt/target/linux/aruba-2.6/patches/002-irq.patch +++ b/openwrt/target/linux/aruba-2.6/patches/002-irq.patch @@ -92,7 +92,7 @@ diff -Nur linux-2.6.15/arch/mips/aruba/idtIRQ.S linux-2.6.15-openwrt/arch/mips/a diff -Nur linux-2.6.15/arch/mips/aruba/irq.c linux-2.6.15-openwrt/arch/mips/aruba/irq.c --- linux-2.6.15/arch/mips/aruba/irq.c 1970-01-01 01:00:00.000000000 +0100 +++ linux-2.6.15-openwrt/arch/mips/aruba/irq.c 2006-01-10 00:32:32.000000000 +0100 -@@ -0,0 +1,393 @@ +@@ -0,0 +1,424 @@ +/************************************************************************** + * + * BRIEF MODULE DESCRIPTION @@ -242,9 +242,14 @@ diff -Nur linux-2.6.15/arch/mips/aruba/irq.c linux-2.6.15-openwrt/arch/mips/arub + +static void aruba_enable_irq(unsigned int irq_nr) +{ ++ unsigned long flags; + int ip = irq_nr - GROUP0_IRQ_BASE; + unsigned int group, intr_bit; + volatile unsigned int *addr; ++ ++ ++ local_irq_save(flags); ++ + if (ip < 0) { + enable_local_irq(irq_nr); + } else { @@ -281,57 +286,70 @@ diff -Nur linux-2.6.15/arch/mips/aruba/irq.c linux-2.6.15-openwrt/arch/mips/arub + break; + } + } ++ ++ local_irq_restore(flags); ++ +} + +static void aruba_disable_irq(unsigned int irq_nr) +{ ++ unsigned long flags; + int ip = irq_nr - GROUP0_IRQ_BASE; + unsigned int group, intr_bit, mask; + volatile unsigned int *addr; + -+ // calculate group -+ switch (mips_machtype) { -+ case MACH_ARUBA_AP70: -+ group = ip >> 5; -+ break; -+ case MACH_ARUBA_AP65: -+ case MACH_ARUBA_AP60: -+ default: -+ group = 0; -+ break; -+ } ++ local_irq_save(flags); + -+ // calc interrupt bit within group -+ ip -= group << 5; -+ intr_bit = 1 << ip; ++ if (ip < 0) { ++ disable_local_irq(irq_nr); ++ } else { ++ // calculate group ++ switch (mips_machtype) { ++ case MACH_ARUBA_AP70: ++ group = ip >> 5; ++ break; ++ case MACH_ARUBA_AP65: ++ case MACH_ARUBA_AP60: ++ default: ++ group = 0; ++ break; ++ } + -+ switch (mips_machtype) { -+ case MACH_ARUBA_AP70: -+ addr = intr_group_muscat[group].base_addr; -+ // mask intr within group -+ mask = READ_MASK_MUSCAT(addr); -+ mask |= intr_bit; -+ WRITE_MASK_MUSCAT(addr, mask); ++ // calc interrupt bit within group ++ ip -= group << 5; ++ intr_bit = 1 << ip; ++ ++ switch (mips_machtype) { ++ case MACH_ARUBA_AP70: ++ addr = intr_group_muscat[group].base_addr; ++ // mask intr within group ++ mask = READ_MASK_MUSCAT(addr); ++ mask |= intr_bit; ++ WRITE_MASK_MUSCAT(addr, mask); + -+ /* -+ if there are no more interrupts enabled in this -+ group, disable corresponding IP -+ */ -+ if (mask == intr_group_muscat[group].mask) -+ disable_local_irq(group_to_ip(group)); -+ break; -+ case MACH_ARUBA_AP65: -+ case MACH_ARUBA_AP60: -+ default: -+ addr = intr_group_merlot[group].base_addr; -+ // mask intr within group -+ mask = READ_MASK_MERLOT(addr); -+ mask &= ~intr_bit; -+ WRITE_MASK_MERLOT(addr, mask); -+ if (!mask) -+ disable_local_irq(group_to_ip(group)); -+ break; ++ /* ++ if there are no more interrupts enabled in this ++ group, disable corresponding IP ++ */ ++ if (mask == intr_group_muscat[group].mask) ++ disable_local_irq(group_to_ip(group)); ++ break; ++ case MACH_ARUBA_AP65: ++ case MACH_ARUBA_AP60: ++ default: ++ addr = intr_group_merlot[group].base_addr; ++ // mask intr within group ++ mask = READ_MASK_MERLOT(addr); ++ mask &= ~intr_bit; ++ WRITE_MASK_MERLOT(addr, mask); ++ if (!mask) ++ disable_local_irq(group_to_ip(group)); ++ break; ++ } + } ++ ++ local_irq_restore(flags); ++ +} + +static unsigned int startup_irq(unsigned int irq_nr) @@ -355,50 +373,60 @@ diff -Nur linux-2.6.15/arch/mips/aruba/irq.c linux-2.6.15-openwrt/arch/mips/arub +static void end_irq(unsigned int irq_nr) +{ + ++ unsigned long flags; + int ip = irq_nr - GROUP0_IRQ_BASE; + unsigned int intr_bit, group; + volatile unsigned int *addr; + ++ ++ local_irq_save(flags); + if (irq_desc[irq_nr].status & (IRQ_DISABLED | IRQ_INPROGRESS)) { -+ printk("warning: end_irq %d did not enable (%x)\n", ++ printk("warning: end_irq %d did not enable (%x) (ignoring)\n", + irq_nr, irq_desc[irq_nr].status); + } + -+ switch (mips_machtype) { -+ case MACH_ARUBA_AP70: -+ if (irq_nr == GROUP4_IRQ_BASE + 9) idt_gpio->gpioistat &= 0xfffffdff; -+ else if (irq_nr == GROUP4_IRQ_BASE + 10) idt_gpio->gpioistat &= 0xfffffbff; -+ else if (irq_nr == GROUP4_IRQ_BASE + 11) idt_gpio->gpioistat &= 0xfffff7ff; -+ else if (irq_nr == GROUP4_IRQ_BASE + 12) idt_gpio->gpioistat &= 0xffffefff; -+ -+ group = ip >> 5; -+ -+ // calc interrupt bit within group -+ ip -= (group << 5); -+ intr_bit = 1 << ip; -+ -+ // first enable the IP mapped to this IRQ -+ enable_local_irq(group_to_ip(group)); -+ -+ addr = intr_group_muscat[group].base_addr; -+ // unmask intr within group -+ WRITE_MASK_MUSCAT(addr, READ_MASK_MUSCAT(addr) & ~intr_bit); -+ break; -+ case MACH_ARUBA_AP65: -+ case MACH_ARUBA_AP60: -+ group = 0; ++ if (ip<0) { ++ enable_local_irq(irq_nr); ++ } else { + -+ // calc interrupt bit within group -+ intr_bit = 1 << ip; ++ switch (mips_machtype) { ++ case MACH_ARUBA_AP70: ++ if (irq_nr == GROUP4_IRQ_BASE + 9) idt_gpio->gpioistat &= 0xfffffdff; ++ else if (irq_nr == GROUP4_IRQ_BASE + 10) idt_gpio->gpioistat &= 0xfffffbff; ++ else if (irq_nr == GROUP4_IRQ_BASE + 11) idt_gpio->gpioistat &= 0xfffff7ff; ++ else if (irq_nr == GROUP4_IRQ_BASE + 12) idt_gpio->gpioistat &= 0xffffefff; ++ ++ group = ip >> 5; ++ ++ // calc interrupt bit within group ++ ip -= (group << 5); ++ intr_bit = 1 << ip; ++ ++ // first enable the IP mapped to this IRQ ++ enable_local_irq(group_to_ip(group)); ++ ++ addr = intr_group_muscat[group].base_addr; ++ // unmask intr within group ++ WRITE_MASK_MUSCAT(addr, READ_MASK_MUSCAT(addr) & ~intr_bit); ++ break; + -+ // first enable the IP mapped to this IRQ -+ enable_local_irq(group_to_ip(group)); -+ -+ addr = intr_group_merlot[group].base_addr; -+ // unmask intr within group -+ WRITE_MASK_MERLOT(addr, READ_MASK_MERLOT(addr) | intr_bit); -+ break; ++ case MACH_ARUBA_AP65: ++ case MACH_ARUBA_AP60: ++ group = 0; ++ ++ // calc interrupt bit within group ++ intr_bit = 1 << ip; ++ ++ // first enable the IP mapped to this IRQ ++ enable_local_irq(group_to_ip(group)); ++ ++ addr = intr_group_merlot[group].base_addr; ++ // unmask intr within group ++ WRITE_MASK_MERLOT(addr, READ_MASK_MERLOT(addr) | intr_bit); ++ break; ++ } + } ++ local_irq_restore(flags); +} + +static struct hw_interrupt_type aruba_irq_type = { @@ -418,6 +446,9 @@ diff -Nur linux-2.6.15/arch/mips/aruba/irq.c linux-2.6.15-openwrt/arch/mips/arub + memset(irq_desc, 0, sizeof(irq_desc)); + set_except_vector(0, idtIRQ); + ++ ++ set_c0_status(0xFF00); ++ + for (i = 0; i < RC32434_NR_IRQS; i++) { + irq_desc[i].status = IRQ_DISABLED; + irq_desc[i].action = NULL;