diff options
author | Ingo Molnar <mingo@elte.hu> | 2009-06-01 21:06:21 +0200 |
---|---|---|
committer | Ingo Molnar <mingo@elte.hu> | 2009-06-01 21:06:21 +0200 |
commit | 3d58f48ba05caed9118bce62b3047f8683438835 (patch) | |
tree | 94c911034f0e14ded73d3e9e6e9f8e22b6cad822 /arch/powerpc/sysdev | |
parent | abfe0af9813153bae8c85d9bac966bafcb8ddab1 (diff) | |
parent | d9244b5d2fbfe9fa540024b410047af13ceec90f (diff) | |
download | linux-3d58f48ba05caed9118bce62b3047f8683438835.tar.bz2 |
Merge branch 'linus' into irq/numa
Conflicts:
arch/mips/sibyte/bcm1480/irq.c
arch/mips/sibyte/sb1250/irq.c
Merge reason: we gathered a few conflicts plus update to latest upstream fixes.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/powerpc/sysdev')
-rw-r--r-- | arch/powerpc/sysdev/fsl_soc.c | 46 | ||||
-rw-r--r-- | arch/powerpc/sysdev/mpic.c | 16 | ||||
-rw-r--r-- | arch/powerpc/sysdev/xilinx_intc.c | 117 |
3 files changed, 116 insertions, 63 deletions
diff --git a/arch/powerpc/sysdev/fsl_soc.c b/arch/powerpc/sysdev/fsl_soc.c index afe8dbc964aa..5c64ccd402e2 100644 --- a/arch/powerpc/sysdev/fsl_soc.c +++ b/arch/powerpc/sysdev/fsl_soc.c @@ -208,52 +208,6 @@ static int __init of_add_fixed_phys(void) arch_initcall(of_add_fixed_phys); #endif /* CONFIG_FIXED_PHY */ -#ifdef CONFIG_PPC_83xx -static int __init mpc83xx_wdt_init(void) -{ - struct resource r; - struct device_node *np; - struct platform_device *dev; - u32 freq = fsl_get_sys_freq(); - int ret; - - np = of_find_compatible_node(NULL, "watchdog", "mpc83xx_wdt"); - - if (!np) { - ret = -ENODEV; - goto nodev; - } - - memset(&r, 0, sizeof(r)); - - ret = of_address_to_resource(np, 0, &r); - if (ret) - goto err; - - dev = platform_device_register_simple("mpc83xx_wdt", 0, &r, 1); - if (IS_ERR(dev)) { - ret = PTR_ERR(dev); - goto err; - } - - ret = platform_device_add_data(dev, &freq, sizeof(freq)); - if (ret) - goto unreg; - - of_node_put(np); - return 0; - -unreg: - platform_device_unregister(dev); -err: - of_node_put(np); -nodev: - return ret; -} - -arch_initcall(mpc83xx_wdt_init); -#endif - static enum fsl_usb2_phy_modes determine_usb_phy(const char *phy_type) { if (!phy_type) diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c index f4cbd15cf22f..352d8c3ef526 100644 --- a/arch/powerpc/sysdev/mpic.c +++ b/arch/powerpc/sysdev/mpic.c @@ -1059,13 +1059,6 @@ struct mpic * __init mpic_alloc(struct device_node *node, memset(mpic, 0, sizeof(struct mpic)); mpic->name = name; - mpic->irqhost = irq_alloc_host(node, IRQ_HOST_MAP_LINEAR, - isu_size, &mpic_host_ops, - flags & MPIC_LARGE_VECTORS ? 2048 : 256); - if (mpic->irqhost == NULL) - return NULL; - - mpic->irqhost->host_data = mpic; mpic->hc_irq = mpic_irq_chip; mpic->hc_irq.typename = name; if (flags & MPIC_PRIMARY) @@ -1215,6 +1208,15 @@ struct mpic * __init mpic_alloc(struct device_node *node, mpic->isu_shift = 1 + __ilog2(mpic->isu_size - 1); mpic->isu_mask = (1 << mpic->isu_shift) - 1; + mpic->irqhost = irq_alloc_host(node, IRQ_HOST_MAP_LINEAR, + isu_size ? isu_size : mpic->num_sources, + &mpic_host_ops, + flags & MPIC_LARGE_VECTORS ? 2048 : 256); + if (mpic->irqhost == NULL) + return NULL; + + mpic->irqhost->host_data = mpic; + /* Display version */ switch (greg_feature & MPIC_GREG_FEATURE_VERSION_MASK) { case 1: diff --git a/arch/powerpc/sysdev/xilinx_intc.c b/arch/powerpc/sysdev/xilinx_intc.c index a22e1a2df1af..c658b413c9b4 100644 --- a/arch/powerpc/sysdev/xilinx_intc.c +++ b/arch/powerpc/sysdev/xilinx_intc.c @@ -41,8 +41,32 @@ static struct irq_host *master_irqhost; +#define XILINX_INTC_MAXIRQS (32) + +/* The following table allows the interrupt type, edge or level, + * to be cached after being read from the device tree until the interrupt + * is mapped + */ +static int xilinx_intc_typetable[XILINX_INTC_MAXIRQS]; + +/* Map the interrupt type from the device tree to the interrupt types + * used by the interrupt subsystem + */ +static unsigned char xilinx_intc_map_senses[] = { + IRQ_TYPE_EDGE_RISING, + IRQ_TYPE_EDGE_FALLING, + IRQ_TYPE_LEVEL_HIGH, + IRQ_TYPE_LEVEL_LOW, +}; + /* - * IRQ Chip operations + * The interrupt controller is setup such that it doesn't work well with + * the level interrupt handler in the kernel because the handler acks the + * interrupt before calling the application interrupt handler. To deal with + * that, we use 2 different irq chips so that different functions can be + * used for level and edge type interrupts. + * + * IRQ Chip common (across level and edge) operations */ static void xilinx_intc_mask(unsigned int virq) { @@ -52,15 +76,54 @@ static void xilinx_intc_mask(unsigned int virq) out_be32(regs + XINTC_CIE, 1 << irq); } -static void xilinx_intc_unmask(unsigned int virq) +static int xilinx_intc_set_type(unsigned int virq, unsigned int flow_type) +{ + struct irq_desc *desc = get_irq_desc(virq); + + desc->status &= ~(IRQ_TYPE_SENSE_MASK | IRQ_LEVEL); + desc->status |= flow_type & IRQ_TYPE_SENSE_MASK; + if (flow_type & (IRQ_TYPE_LEVEL_HIGH | IRQ_TYPE_LEVEL_LOW)) + desc->status |= IRQ_LEVEL; + return 0; +} + +/* + * IRQ Chip level operations + */ +static void xilinx_intc_level_unmask(unsigned int virq) { int irq = virq_to_hw(virq); void * regs = get_irq_chip_data(virq); pr_debug("unmask: %d\n", irq); out_be32(regs + XINTC_SIE, 1 << irq); + + /* ack level irqs because they can't be acked during + * ack function since the handle_level_irq function + * acks the irq before calling the inerrupt handler + */ + out_be32(regs + XINTC_IAR, 1 << irq); } -static void xilinx_intc_ack(unsigned int virq) +static struct irq_chip xilinx_intc_level_irqchip = { + .typename = "Xilinx Level INTC", + .mask = xilinx_intc_mask, + .mask_ack = xilinx_intc_mask, + .unmask = xilinx_intc_level_unmask, + .set_type = xilinx_intc_set_type, +}; + +/* + * IRQ Chip edge operations + */ +static void xilinx_intc_edge_unmask(unsigned int virq) +{ + int irq = virq_to_hw(virq); + void *regs = get_irq_chip_data(virq); + pr_debug("unmask: %d\n", irq); + out_be32(regs + XINTC_SIE, 1 << irq); +} + +static void xilinx_intc_edge_ack(unsigned int virq) { int irq = virq_to_hw(virq); void * regs = get_irq_chip_data(virq); @@ -68,27 +131,60 @@ static void xilinx_intc_ack(unsigned int virq) out_be32(regs + XINTC_IAR, 1 << irq); } -static struct irq_chip xilinx_intc_irqchip = { - .typename = "Xilinx INTC", +static struct irq_chip xilinx_intc_edge_irqchip = { + .typename = "Xilinx Edge INTC", .mask = xilinx_intc_mask, - .unmask = xilinx_intc_unmask, - .ack = xilinx_intc_ack, + .unmask = xilinx_intc_edge_unmask, + .ack = xilinx_intc_edge_ack, + .set_type = xilinx_intc_set_type, }; /* * IRQ Host operations */ + +/** + * xilinx_intc_xlate - translate virq# from device tree interrupts property + */ +static int xilinx_intc_xlate(struct irq_host *h, struct device_node *ct, + u32 *intspec, unsigned int intsize, + irq_hw_number_t *out_hwirq, + unsigned int *out_flags) +{ + if ((intsize < 2) || (intspec[0] >= XILINX_INTC_MAXIRQS)) + return -EINVAL; + + /* keep a copy of the interrupt type til the interrupt is mapped + */ + xilinx_intc_typetable[intspec[0]] = xilinx_intc_map_senses[intspec[1]]; + + /* Xilinx uses 2 interrupt entries, the 1st being the h/w + * interrupt number, the 2nd being the interrupt type, edge or level + */ + *out_hwirq = intspec[0]; + *out_flags = xilinx_intc_map_senses[intspec[1]]; + + return 0; +} static int xilinx_intc_map(struct irq_host *h, unsigned int virq, irq_hw_number_t irq) { set_irq_chip_data(virq, h->host_data); - set_irq_chip_and_handler(virq, &xilinx_intc_irqchip, handle_level_irq); - set_irq_type(virq, IRQ_TYPE_NONE); + + if (xilinx_intc_typetable[irq] == IRQ_TYPE_LEVEL_HIGH || + xilinx_intc_typetable[irq] == IRQ_TYPE_LEVEL_LOW) { + set_irq_chip_and_handler(virq, &xilinx_intc_level_irqchip, + handle_level_irq); + } else { + set_irq_chip_and_handler(virq, &xilinx_intc_edge_irqchip, + handle_edge_irq); + } return 0; } static struct irq_host_ops xilinx_intc_ops = { .map = xilinx_intc_map, + .xlate = xilinx_intc_xlate, }; struct irq_host * __init @@ -116,7 +212,8 @@ xilinx_intc_init(struct device_node *np) out_be32(regs + XINTC_MER, 0x3UL); /* Turn on the Master Enable. */ /* Allocate and initialize an irq_host structure. */ - irq = irq_alloc_host(np, IRQ_HOST_MAP_LINEAR, 32, &xilinx_intc_ops, -1); + irq = irq_alloc_host(np, IRQ_HOST_MAP_LINEAR, XILINX_INTC_MAXIRQS, + &xilinx_intc_ops, -1); if (!irq) panic(__FILE__ ": Cannot allocate IRQ host\n"); irq->host_data = regs; |