44,23 → 44,23 |
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/* ICW2: IRQ 0 maps to INT IRQBASE */ |
outb(PIC_PIC0PORT2, IVT_IRQBASE); |
|
|
/* ICW3: pic1 using IRQ IRQ_PIC1 */ |
outb(PIC_PIC0PORT2, 1 << IRQ_PIC1); |
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/* ICW4: i8086 mode */ |
|
/* ICW4: i8086 mode */ |
outb(PIC_PIC0PORT2, 1); |
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/* ICW1: ICW1, ICW4 to follow */ |
outb(PIC_PIC1PORT1, PIC_ICW1 | PIC_NEEDICW4); |
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/* ICW2: IRQ 8 maps to INT (IVT_IRQBASE + 8) */ |
/* ICW2: IRQ 8 maps to INT (IVT_IRQBASE + 8) */ |
outb(PIC_PIC1PORT2, IVT_IRQBASE + 8); |
|
/* ICW3: pic1 is known as PIC_PIC1ID */ |
outb(PIC_PIC1PORT2, PIC_PIC1ID); |
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/* ICW4: i8086 mode */ |
/* ICW4: i8086 mode */ |
outb(PIC_PIC1PORT2, 1); |
|
/* |
75,7 → 75,7 |
enable_irqs_function = pic_enable_irqs; |
disable_irqs_function = pic_disable_irqs; |
eoi_function = pic_eoi; |
|
|
pic_disable_irqs(0xffff); /* disable all irq's */ |
pic_enable_irqs(1<<IRQ_PIC1); /* but enable pic1 */ |
} |
83,13 → 83,13 |
void pic_enable_irqs(__u16 irqmask) |
{ |
__u8 x; |
|
|
if (irqmask & 0xff) { |
x = inb(PIC_PIC0PORT2); |
x = inb(PIC_PIC0PORT2); |
outb(PIC_PIC0PORT2, x & (~(irqmask & 0xff))); |
} |
if (irqmask >> 8) { |
x = inb(PIC_PIC1PORT2); |
x = inb(PIC_PIC1PORT2); |
outb(PIC_PIC1PORT2, x & (~(irqmask >> 8))); |
} |
} |
97,13 → 97,13 |
void pic_disable_irqs(__u16 irqmask) |
{ |
__u8 x; |
|
|
if (irqmask & 0xff) { |
x = inb(PIC_PIC0PORT2); |
x = inb(PIC_PIC0PORT2); |
outb(PIC_PIC0PORT2, x | (irqmask & 0xff)); |
} |
if (irqmask >> 8) { |
x = inb(PIC_PIC1PORT2); |
x = inb(PIC_PIC1PORT2); |
outb(PIC_PIC1PORT2, x | (irqmask >> 8)); |
} |
} |
111,7 → 111,7 |
void pic_eoi(void) |
{ |
outb(0x20,0x20); |
outb(0xa0,0x20); |
outb(0xa0,0x20); |
} |
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void pic_spurious(__u8 n, __u32 stack[]) |