Commit 21fb5a1d authored by Benjamin Herrenschmidt's avatar Benjamin Herrenschmidt Committed by Paul Mackerras
Browse files

[POWERPC] Native cell support for MPIC in southbridge 



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

Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent a959ff56

arch/powerpc/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -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

arch/powerpc/platforms/cell/setup.c

+44 −0
Original line number Diff line number Diff line
@@ -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)