diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/platforms/powernv/opal.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/powernv/opal.c b/arch/powerpc/platforms/powernv/opal.c index 7887733..5a598ca 100644 --- a/arch/powerpc/platforms/powernv/opal.c +++ b/arch/powerpc/platforms/powernv/opal.c @@ -14,6 +14,7 @@ #include <linux/types.h> #include <linux/of.h> #include <linux/of_platform.h> +#include <linux/interrupt.h> #include <asm/opal.h> #include <asm/firmware.h> @@ -135,9 +136,22 @@ int opal_put_chars(uint32_t vtermno, const char *data, int total_len) return written; } +static irqreturn_t opal_interrupt(int irq, void *data) +{ + uint64_t events; + + opal_handle_interrupt(virq_to_hw(irq), &events); + + /* XXX TODO: Do something with the events */ + + return IRQ_HANDLED; +} + static int __init opal_init(void) { struct device_node *np, *consoles; + const u32 *irqs; + int rc, i, irqlen; opal_node = of_find_node_by_path("/ibm,opal"); if (!opal_node) { @@ -156,6 +170,23 @@ static int __init opal_init(void) of_platform_device_create(np, NULL, NULL); } of_node_put(consoles); + + /* Find all OPAL interrupts and request them */ + irqs = of_get_property(opal_node, "opal-interrupts", &irqlen); + pr_debug("opal: Found %d interrupts reserved for OPAL\n", + irqs ? (irqlen / 4) : 0); + for (i = 0; irqs && i < (irqlen / 4); i++, irqs++) { + unsigned int hwirq = be32_to_cpup(irqs); + unsigned int irq = irq_create_mapping(NULL, hwirq); + if (irq == NO_IRQ) { + pr_warning("opal: Failed to map irq 0x%x\n", hwirq); + continue; + } + rc = request_irq(irq, opal_interrupt, 0, "opal", NULL); + if (rc) + pr_warning("opal: Error %d requesting irq %d" + " (0x%x)\n", rc, irq, hwirq); + } return 0; } subsys_initcall(opal_init); |