From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: To: From: Benjamin Herrenschmidt Date: Sat, 11 Nov 2006 17:24:58 +1100 Subject: [PATCH 13/32] powerpc: Native cell support for MPIC in southbridge In-Reply-To: <1163226282.72526.823314634857.qpush@butch> Message-Id: <20061111062528.78EEA6833F@ozlabs.org> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Add support for southbridges using the MPIC interrupt controller to the native cell platforms. Signed-off-by: Benjamin Herrenschmidt arch/powerpc/Kconfig | 1 arch/powerpc/platforms/cell/setup.c | 44 ++++++++++++++++++++++++++++++++++++ 2 files changed, 45 insertions(+) Index: linux-cell/arch/powerpc/Kconfig =================================================================== --- linux-cell.orig/arch/powerpc/Kconfig 2006-11-06 15:05:40.000000000 +1100 +++ linux-cell/arch/powerpc/Kconfig 2006-11-06 15:15:45.000000000 +1100 @@ -461,6 +461,7 @@ config PPC_CELL_NATIVE bool select PPC_CELL select PPC_DCR_MMIO + select MPIC default n config PPC_IBM_CELL_BLADE Index: linux-cell/arch/powerpc/platforms/cell/setup.c =================================================================== --- linux-cell.orig/arch/powerpc/platforms/cell/setup.c 2006-11-06 15:02:21.000000000 +1100 +++ linux-cell/arch/powerpc/platforms/cell/setup.c 2006-11-06 15:05:44.000000000 +1100 @@ -50,6 +50,7 @@ #include #include #include +#include #include "interrupt.h" #include "iommu.h" @@ -80,10 +81,53 @@ static void cell_progress(char *s, unsig 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)