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[PATCH] genirq: convert the x86_64 architecture to irq-chips

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This patch converts all the x86_64 PIC controllers layers to the new and
simpler irq-chip interrupt handling layer.

[mingo@elte.hu: The patch also enables the fasteoi handler for x86_64]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Roland Dreier <rolandd@cisco.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Ingo Molnar
2006-10-04 02:16:25 -07:00
committed by Linus Torvalds
parent 0271eb947d
commit f29bd1ba68
4 changed files with 44 additions and 143 deletions
Download Patch File Download Diff File Expand all files Collapse all files
arch/x86_64/kernel/i8259.c
+12 -38
View File
@@ -121,42 +121,15 @@ void (*interrupt[NR_IRQS])(void) = {
* moves to arch independent land
*/
DEFINE_SPINLOCK(i8259A_lock);
static int i8259A_auto_eoi;
static void end_8259A_irq (unsigned int irq)
{
if (irq > 256) {
char var;
printk("return %p stack %p ti %p\n", __builtin_return_address(0), &var, task_thread_info(current));
BUG();
}
if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS)) &&
irq_desc[irq].action)
enable_8259A_irq(irq);
}
#define shutdown_8259A_irq disable_8259A_irq
DEFINE_SPINLOCK(i8259A_lock);
static void mask_and_ack_8259A(unsigned int);
static unsigned int startup_8259A_irq(unsigned int irq)
{
enable_8259A_irq(irq);
return 0; /* never anything pending */
}
static struct hw_interrupt_type i8259A_irq_type = {
.typename = "XT-PIC",
.startup = startup_8259A_irq,
.shutdown = shutdown_8259A_irq,
.enable = enable_8259A_irq,
.disable = disable_8259A_irq,
.ack = mask_and_ack_8259A,
.end = end_8259A_irq,
static struct irq_chip i8259A_chip = {
.name = "XT-PIC",
.mask = disable_8259A_irq,
.unmask = enable_8259A_irq,
.mask_ack = mask_and_ack_8259A,
};
/*
@@ -231,7 +204,7 @@ void make_8259A_irq(unsigned int irq)
{
disable_irq_nosync(irq);
io_apic_irqs &= ~(1<<irq);
irq_desc[irq].chip = &i8259A_irq_type;
set_irq_chip_and_handler(irq, &i8259A_chip, handle_level_irq);
enable_irq(irq);
}
@@ -367,9 +340,9 @@ void init_8259A(int auto_eoi)
* in AEOI mode we just have to mask the interrupt
* when acking.
*/
i8259A_irq_type.ack = disable_8259A_irq;
i8259A_chip.mask_ack = disable_8259A_irq;
else
i8259A_irq_type.ack = mask_and_ack_8259A;
i8259A_chip.mask_ack = mask_and_ack_8259A;
udelay(100); /* wait for 8259A to initialize */
@@ -464,12 +437,13 @@ void __init init_ISA_irqs (void)
/*
* 16 old-style INTA-cycle interrupts:
*/
irq_desc[i].chip = &i8259A_irq_type;
set_irq_chip_and_handler(i, &i8259A_chip,
handle_level_irq);
} else {
/*
* 'high' PCI IRQs filled in on demand
*/
irq_desc[i].chip = &no_irq_type;
irq_desc[i].chip = &no_irq_chip;
}
}
}