diff options
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/Kconfig | 1 | ||||
| -rw-r--r-- | arch/mips/sgi-ip22/ip22-eisa.c | 134 |
2 files changed, 3 insertions, 132 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 4c6ba7b30a6..455bd1f560a 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -401,6 +401,7 @@ config SGI_IP22 select DMA_NONCOHERENT select HW_HAS_EISA select I8253 + select I8259 select IP22_CPU_SCACHE select IRQ_CPU select GENERIC_ISA_DMA_SUPPORT_BROKEN diff --git a/arch/mips/sgi-ip22/ip22-eisa.c b/arch/mips/sgi-ip22/ip22-eisa.c index 26854fb11e7..1617241d273 100644 --- a/arch/mips/sgi-ip22/ip22-eisa.c +++ b/arch/mips/sgi-ip22/ip22-eisa.c @@ -36,6 +36,7 @@ #include <asm/sgi/ioc.h> #include <asm/sgi/mc.h> #include <asm/sgi/ip22.h> +#include <asm/i8259.h> /* I2 has four EISA slots. */ #define IP22_EISA_MAX_SLOTS 4 @@ -93,126 +94,11 @@ static irqreturn_t ip22_eisa_intr(int irq, void *dev_id) return IRQ_NONE; } -static void enable_eisa1_irq(unsigned int irq) -{ - u8 mask; - - mask = inb(EISA_INT1_MASK); - mask &= ~((u8) (1 << irq)); - outb(mask, EISA_INT1_MASK); -} - -static unsigned int startup_eisa1_irq(unsigned int irq) -{ - u8 edge; - - /* Only use edge interrupts for EISA */ - - edge = inb(EISA_INT1_EDGE_LEVEL); - edge &= ~((u8) (1 << irq)); - outb(edge, EISA_INT1_EDGE_LEVEL); - - enable_eisa1_irq(irq); - return 0; -} - -static void disable_eisa1_irq(unsigned int irq) -{ - u8 mask; - - mask = inb(EISA_INT1_MASK); - mask |= ((u8) (1 << irq)); - outb(mask, EISA_INT1_MASK); -} - -static void mask_and_ack_eisa1_irq(unsigned int irq) -{ - disable_eisa1_irq(irq); - - outb(0x20, EISA_INT1_CTRL); -} - -static void end_eisa1_irq(unsigned int irq) -{ - if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS))) - enable_eisa1_irq(irq); -} - -static struct irq_chip ip22_eisa1_irq_type = { - .name = "IP22 EISA", - .startup = startup_eisa1_irq, - .ack = mask_and_ack_eisa1_irq, - .mask = disable_eisa1_irq, - .mask_ack = mask_and_ack_eisa1_irq, - .unmask = enable_eisa1_irq, - .end = end_eisa1_irq, -}; - -static void enable_eisa2_irq(unsigned int irq) -{ - u8 mask; - - mask = inb(EISA_INT2_MASK); - mask &= ~((u8) (1 << (irq - 8))); - outb(mask, EISA_INT2_MASK); -} - -static unsigned int startup_eisa2_irq(unsigned int irq) -{ - u8 edge; - - /* Only use edge interrupts for EISA */ - - edge = inb(EISA_INT2_EDGE_LEVEL); - edge &= ~((u8) (1 << (irq - 8))); - outb(edge, EISA_INT2_EDGE_LEVEL); - - enable_eisa2_irq(irq); - return 0; -} - -static void disable_eisa2_irq(unsigned int irq) -{ - u8 mask; - - mask = inb(EISA_INT2_MASK); - mask |= ((u8) (1 << (irq - 8))); - outb(mask, EISA_INT2_MASK); -} - -static void mask_and_ack_eisa2_irq(unsigned int irq) -{ - disable_eisa2_irq(irq); - - outb(0x20, EISA_INT2_CTRL); -} - -static void end_eisa2_irq(unsigned int irq) -{ - if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS))) - enable_eisa2_irq(irq); -} - -static struct irq_chip ip22_eisa2_irq_type = { - .name = "IP22 EISA", - .startup = startup_eisa2_irq, - .ack = mask_and_ack_eisa2_irq, - .mask = disable_eisa2_irq, - .mask_ack = mask_and_ack_eisa2_irq, - .unmask = enable_eisa2_irq, - .end = end_eisa2_irq, -}; - static struct irqaction eisa_action = { .handler = ip22_eisa_intr, .name = "EISA", }; -static struct irqaction cascade_action = { - .handler = no_action, - .name = "EISA cascade", -}; - int __init ip22_eisa_init(void) { int i, c; @@ -248,29 +134,13 @@ int __init ip22_eisa_init(void) outb(1, EISA_EXT_NMI_RESET_CTRL); udelay(50); /* Wait long enough for the dust to settle */ outb(0, EISA_EXT_NMI_RESET_CTRL); - outb(0x11, EISA_INT1_CTRL); - outb(0x11, EISA_INT2_CTRL); - outb(0, EISA_INT1_MASK); - outb(8, EISA_INT2_MASK); - outb(4, EISA_INT1_MASK); - outb(2, EISA_INT2_MASK); - outb(1, EISA_INT1_MASK); - outb(1, EISA_INT2_MASK); - outb(0xfb, EISA_INT1_MASK); - outb(0xff, EISA_INT2_MASK); outb(0, EISA_DMA2_WRITE_SINGLE); - for (i = SGINT_EISA; i < (SGINT_EISA + EISA_MAX_IRQ); i++) { - if (i < (SGINT_EISA + 8)) - set_irq_chip(i, &ip22_eisa1_irq_type); - else - set_irq_chip(i, &ip22_eisa2_irq_type); - } + init_i8259_irqs(); /* Cannot use request_irq because of kmalloc not being ready at such * an early stage. Yes, I've been bitten... */ setup_irq(SGI_EISA_IRQ, &eisa_action); - setup_irq(SGINT_EISA + 2, &cascade_action); EISA_bus = 1; return 0; |