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[POWERPC] Native cell support for MPIC in southbridge

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Add support for southbridges using the MPIC interrupt controller to
the native cell platforms.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Benjamin Herrenschmidt 2006-11-11 17:24:58 +11:00 committed by Paul Mackerras
parent a959ff56bb
commit 21fb5a1d9f
2 changed files with 45 additions and 0 deletions
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1
arch/powerpc/Kconfig
View File

@ -469,6 +469,7 @@ config PPC_CELL_NATIVE
bool
select PPC_CELL
select PPC_DCR_MMIO
select MPIC
default n
config PPC_IBM_CELL_BLADE

44
arch/powerpc/platforms/cell/setup.c
View File

@ -50,6 +50,7 @@
#include <asm/spu.h>
#include <asm/spu_priv1.h>
#include <asm/udbg.h>
#include <asm/mpic.h>
#include "interrupt.h"
#include "iommu.h"
@ -80,10 +81,53 @@ static void cell_progress(char *s, unsigned short hex)
printk("*** %04x : %s\n", hex, s ? s : "");
}
static void cell_mpic_cascade(unsigned int irq, struct irq_desc *desc)
{
struct mpic *mpic = desc->handler_data;
unsigned int virq;
virq = mpic_get_one_irq(mpic);
if (virq != NO_IRQ)
generic_handle_irq(virq);
desc->chip->eoi(irq);
}
static void __init mpic_init_IRQ(void)
{
struct device_node *dn;
struct mpic *mpic;
unsigned int virq;
for (dn = NULL;
(dn = of_find_node_by_name(dn, "interrupt-controller"));) {
if (!device_is_compatible(dn, "CBEA,platform-open-pic"))
continue;
/* The MPIC driver will get everything it needs from the
* device-tree, just pass 0 to all arguments
*/
mpic = mpic_alloc(dn, 0, 0, 0, 0, " MPIC ");
if (mpic == NULL)
continue;
mpic_init(mpic);
virq = irq_of_parse_and_map(dn, 0);
if (virq == NO_IRQ)
continue;
printk(KERN_INFO "%s : hooking up to IRQ %d\n",
dn->full_name, virq);
set_irq_data(virq, mpic);
set_irq_chained_handler(virq, cell_mpic_cascade);
}
}
static void __init cell_init_irq(void)
{
iic_init_IRQ();
spider_init_IRQ();
mpic_init_IRQ();
}
static void __init cell_setup_arch(void)