diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/ddb5xxx/ddb5477/irq.c | 5 | ||||
| -rw-r--r-- | arch/mips/kernel/i8259.c | 20 | ||||
| -rw-r--r-- | arch/mips/pci/fixup-vr4133.c | 13 | ||||
| -rw-r--r-- | arch/mips/vr41xx/nec-cmbvr4133/irq.c | 53 |
4 files changed, 20 insertions, 71 deletions
diff --git a/arch/mips/ddb5xxx/ddb5477/irq.c b/arch/mips/ddb5xxx/ddb5477/irq.c index bd7cd7c5f485..2b23234a5b95 100644 --- a/arch/mips/ddb5xxx/ddb5477/irq.c +++ b/arch/mips/ddb5xxx/ddb5477/irq.c @@ -146,8 +146,7 @@ u8 i8259_interrupt_ack(void) irq = *(volatile u8 *) KSEG1ADDR(DDB_PCI_IACK_BASE); ddb_out32(DDB_PCIINIT10, reg); - /* i8259.c set the base vector to be 0x0 */ - return irq + I8259_IRQ_BASE; + return irq; } /* * the first level int-handler will jump here if it is a vrc5477 irq @@ -177,7 +176,7 @@ static void vrc5477_irq_dispatch(void) /* check for i8259 interrupts */ if (intStatus & (1 << VRC5477_I8259_CASCADE)) { int i8259_irq = i8259_interrupt_ack(); - do_IRQ(I8259_IRQ_BASE + i8259_irq); + do_IRQ(i8259_irq); return; } } diff --git a/arch/mips/kernel/i8259.c b/arch/mips/kernel/i8259.c index b59a676c6d0e..91de4223d638 100644 --- a/arch/mips/kernel/i8259.c +++ b/arch/mips/kernel/i8259.c @@ -54,9 +54,11 @@ static unsigned int cached_irq_mask = 0xffff; void disable_8259A_irq(unsigned int irq) { - unsigned int mask = 1 << irq; + unsigned int mask; unsigned long flags; + irq -= I8259A_IRQ_BASE; + mask = 1 << irq; spin_lock_irqsave(&i8259A_lock, flags); cached_irq_mask |= mask; if (irq & 8) @@ -68,9 +70,11 @@ void disable_8259A_irq(unsigned int irq) void enable_8259A_irq(unsigned int irq) { - unsigned int mask = ~(1 << irq); + unsigned int mask; unsigned long flags; + irq -= I8259A_IRQ_BASE; + mask = ~(1 << irq); spin_lock_irqsave(&i8259A_lock, flags); cached_irq_mask &= mask; if (irq & 8) @@ -82,10 +86,12 @@ void enable_8259A_irq(unsigned int irq) int i8259A_irq_pending(unsigned int irq) { - unsigned int mask = 1 << irq; + unsigned int mask; unsigned long flags; int ret; + irq -= I8259A_IRQ_BASE; + mask = 1 << irq; spin_lock_irqsave(&i8259A_lock, flags); if (irq < 8) ret = inb(PIC_MASTER_CMD) & mask; @@ -134,9 +140,11 @@ static inline int i8259A_irq_real(unsigned int irq) */ void mask_and_ack_8259A(unsigned int irq) { - unsigned int irqmask = 1 << irq; + unsigned int irqmask; unsigned long flags; + irq -= I8259A_IRQ_BASE; + irqmask = 1 << irq; spin_lock_irqsave(&i8259A_lock, flags); /* * Lightweight spurious IRQ detection. We do not want @@ -322,8 +330,8 @@ void __init init_i8259_irqs (void) init_8259A(0); - for (i = 0; i < 16; i++) + for (i = I8259A_IRQ_BASE; i < I8259A_IRQ_BASE + 16; i++) set_irq_chip_and_handler(i, &i8259A_chip, handle_level_irq); - setup_irq(PIC_CASCADE_IR, &irq2); + setup_irq(I8259A_IRQ_BASE + PIC_CASCADE_IR, &irq2); } diff --git a/arch/mips/pci/fixup-vr4133.c b/arch/mips/pci/fixup-vr4133.c index 597b89764ba1..b1a5b318f26f 100644 --- a/arch/mips/pci/fixup-vr4133.c +++ b/arch/mips/pci/fixup-vr4133.c @@ -19,6 +19,7 @@ #include <linux/pci.h> #include <asm/io.h> +#include <asm/i8259.h> #include <asm/vr41xx/cmbvr4133.h> extern int vr4133_rockhopper; @@ -160,17 +161,7 @@ int rockhopper_get_irq(struct pci_dev *dev, u8 pin, u8 slot) #ifdef CONFIG_ROCKHOPPER void i8259_init(void) { - outb(0x11, 0x20); /* Master ICW1 */ - outb(I8259_IRQ_BASE, 0x21); /* Master ICW2 */ - outb(0x04, 0x21); /* Master ICW3 */ - outb(0x01, 0x21); /* Master ICW4 */ - outb(0xff, 0x21); /* Master IMW */ - - outb(0x11, 0xa0); /* Slave ICW1 */ - outb(I8259_IRQ_BASE + 8, 0xa1); /* Slave ICW2 */ - outb(0x02, 0xa1); /* Slave ICW3 */ - outb(0x01, 0xa1); /* Slave ICW4 */ - outb(0xff, 0xa1); /* Slave IMW */ + init_i8259_irqs(); outb(0x00, 0x4d0); outb(0x02, 0x4d1); /* USB IRQ9 is level */ diff --git a/arch/mips/vr41xx/nec-cmbvr4133/irq.c b/arch/mips/vr41xx/nec-cmbvr4133/irq.c index 128ed8d6f111..7d2d076b0f54 100644 --- a/arch/mips/vr41xx/nec-cmbvr4133/irq.c +++ b/arch/mips/vr41xx/nec-cmbvr4133/irq.c @@ -21,60 +21,16 @@ #include <linux/interrupt.h> #include <asm/io.h> +#include <asm/i8259.h> #include <asm/vr41xx/cmbvr4133.h> -extern void enable_8259A_irq(unsigned int irq); -extern void disable_8259A_irq(unsigned int irq); -extern void mask_and_ack_8259A(unsigned int irq); -extern void init_8259A(int hoge); - extern int vr4133_rockhopper; -static void enable_i8259_irq(unsigned int irq) -{ - enable_8259A_irq(irq - I8259_IRQ_BASE); -} - -static void disable_i8259_irq(unsigned int irq) -{ - disable_8259A_irq(irq - I8259_IRQ_BASE); -} - -static void ack_i8259_irq(unsigned int irq) -{ - mask_and_ack_8259A(irq - I8259_IRQ_BASE); -} - -static struct irq_chip i8259_irq_type = { - .typename = "XT-PIC", - .ack = ack_i8259_irq, - .mask = disable_i8259_irq, - .mask_ack = ack_i8259_irq, - .unmask = enable_i8259_irq, -}; - static int i8259_get_irq_number(int irq) { - unsigned long isr; - - isr = inb(0x20); - irq = ffz(~isr); - if (irq == 2) { - isr = inb(0xa0); - irq = 8 + ffz(~isr); - } - - if (irq < 0 || irq > 15) - return -EINVAL; - - return I8259_IRQ_BASE + irq; + return i8259_irq(); } -static struct irqaction i8259_slave_cascade = { - .handler = &no_action, - .name = "cascade", -}; - void __init rockhopper_init_irq(void) { int i; @@ -84,11 +40,6 @@ void __init rockhopper_init_irq(void) return; } - for (i = I8259_IRQ_BASE; i <= I8259_IRQ_LAST; i++) - set_irq_chip_and_handler(i, &i8259_irq_type, handle_level_irq); - - setup_irq(I8259_SLAVE_IRQ, &i8259_slave_cascade); - vr41xx_set_irq_trigger(CMBVR41XX_INTC_PIN, TRIGGER_LEVEL, SIGNAL_THROUGH); vr41xx_set_irq_level(CMBVR41XX_INTC_PIN, LEVEL_HIGH); vr41xx_cascade_irq(CMBVR41XX_INTC_IRQ, i8259_get_irq_number); |