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[POWERPC] Use the genirq framework

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This adapts the generic powerpc interrupt handling code, and all of
the platforms except for the embedded 6xx machines, to use the new
genirq framework.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Benjamin Herrenschmidt
2006-07-03 19:32:51 +10:00
committed by Paul Mackerras
parent 5a43a066b1
commit b9e5b4e6a9
17 changed files with 692 additions and 635 deletions
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26
arch/powerpc/platforms/pseries/setup.c
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@@ -118,6 +118,21 @@ static void __init fwnmi_init(void)
fwnmi_active = 1;
}
void pSeries_8259_cascade(unsigned int irq, struct irq_desc *desc,
struct pt_regs *regs)
{
unsigned int max = 100;
while(max--) {
int cascade_irq = i8259_irq(regs);
if (max == 99)
desc->chip->eoi(irq);
if (cascade_irq < 0)
break;
generic_handle_irq(cascade_irq, regs);
};
}
static void __init pSeries_init_mpic(void)
{
unsigned int *addrp;
@@ -140,7 +155,7 @@ static void __init pSeries_init_mpic(void)
i8259_init(intack, 0);
/* Hook cascade to mpic */
mpic_setup_cascade(NUM_ISA_INTERRUPTS, i8259_irq_cascade, NULL);
set_irq_chained_handler(NUM_ISA_INTERRUPTS, pSeries_8259_cascade);
}
static void __init pSeries_setup_mpic(void)
@@ -201,10 +216,8 @@ static void __init pSeries_setup_arch(void)
/* Allocate the mpic now, so that find_and_init_phbs() can
* fill the ISUs */
pSeries_setup_mpic();
} else {
} else
ppc_md.init_IRQ = xics_init_IRQ;
ppc_md.get_irq = xics_get_irq;
}
#ifdef CONFIG_SMP
smp_init_pSeries();
@@ -291,10 +304,7 @@ static void pSeries_mach_cpu_die(void)
{
local_irq_disable();
idle_task_exit();
/* Some hardware requires clearing the CPPR, while other hardware does not
* it is safe either way
*/
pSeriesLP_cppr_info(0, 0);
xics_teardown_cpu(0);
rtas_stop_self();
/* Should never get here... */
BUG();