diff options
Diffstat (limited to 'arch/powerpc/platforms/powernv/opal.c')
-rw-r--r-- | arch/powerpc/platforms/powernv/opal.c | 78 |
1 files changed, 12 insertions, 66 deletions
diff --git a/arch/powerpc/platforms/powernv/opal.c b/arch/powerpc/platforms/powernv/opal.c index eb3decc67c43..3baca718261a 100644 --- a/arch/powerpc/platforms/powernv/opal.c +++ b/arch/powerpc/platforms/powernv/opal.c @@ -53,8 +53,6 @@ static int mc_recoverable_range_len; struct device_node *opal_node; static DEFINE_SPINLOCK(opal_write_lock); -static unsigned int *opal_irqs; -static unsigned int opal_irq_count; static ATOMIC_NOTIFIER_HEAD(opal_notifier_head); static struct atomic_notifier_head opal_msg_notifier_head[OPAL_MSG_TYPE_MAX]; static DEFINE_SPINLOCK(opal_notifier_lock); @@ -251,7 +249,7 @@ int opal_notifier_unregister(struct notifier_block *nb) } EXPORT_SYMBOL_GPL(opal_notifier_unregister); -static void opal_do_notifier(uint64_t events) +void opal_do_notifier(uint64_t events) { unsigned long flags; uint64_t changed_mask; @@ -571,8 +569,10 @@ int opal_handle_hmi_exception(struct pt_regs *regs) local_paca->hmi_event_available = 0; rc = opal_poll_events(&evt); - if (rc == OPAL_SUCCESS && evt) + if (rc == OPAL_SUCCESS && evt) { opal_do_notifier(be64_to_cpu(evt)); + opal_handle_events(be64_to_cpu(evt)); + } return 1; } @@ -609,17 +609,6 @@ out: return !!recover_addr; } -static irqreturn_t opal_interrupt(int irq, void *data) -{ - __be64 events; - - opal_handle_interrupt(virq_to_hw(irq), &events); - - opal_do_notifier(be64_to_cpu(events)); - - return IRQ_HANDLED; -} - static int opal_sysfs_init(void) { opal_kobj = kobject_create_and_add("opal", firmware_kobj); @@ -718,52 +707,15 @@ static void opal_i2c_create_devs(void) of_platform_device_create(np, NULL, NULL); } -static void __init opal_irq_init(struct device_node *dn) -{ - const __be32 *irqs; - int i, irqlen; - - /* Get interrupt property */ - irqs = of_get_property(opal_node, "opal-interrupts", &irqlen); - opal_irq_count = irqs ? (irqlen / 4) : 0; - pr_debug("Found %d interrupts reserved for OPAL\n", opal_irq_count); - if (!opal_irq_count) - return; - - /* Install interrupt handlers */ - opal_irqs = kzalloc(opal_irq_count * sizeof(unsigned int), GFP_KERNEL); - for (i = 0; irqs && i < opal_irq_count; i++, irqs++) { - unsigned int irq, virq; - int rc; - - /* Get hardware and virtual IRQ */ - irq = be32_to_cpup(irqs); - virq = irq_create_mapping(NULL, irq); - if (virq == NO_IRQ) { - pr_warn("Failed to map irq 0x%x\n", irq); - continue; - } - - /* Install interrupt handler */ - rc = request_irq(virq, opal_interrupt, 0, "opal", NULL); - if (rc) { - irq_dispose_mapping(virq); - pr_warn("Error %d requesting irq %d (0x%x)\n", - rc, virq, irq); - continue; - } - - /* Cache IRQ */ - opal_irqs[i] = virq; - } -} - static int kopald(void *unused) { + __be64 events; + set_freezable(); do { try_to_freeze(); - opal_poll_events(NULL); + opal_poll_events(&events); + opal_handle_events(be64_to_cpu(events)); msleep_interruptible(opal_heartbeat); } while (!kthread_should_stop()); @@ -792,6 +744,9 @@ static int __init opal_init(void) return -ENODEV; } + /* Initialise OPAL events */ + opal_event_init(); + /* Register OPAL consoles if any ports */ if (firmware_has_feature(FW_FEATURE_OPALv2)) consoles = of_find_node_by_path("/ibm,opal/consoles"); @@ -824,9 +779,6 @@ static int __init opal_init(void) /* Setup a heatbeat thread if requested by OPAL */ opal_init_heartbeat(); - /* Find all OPAL interrupts and request them */ - opal_irq_init(opal_node); - /* Create "opal" kobject under /sys/firmware */ rc = opal_sysfs_init(); if (rc == 0) { @@ -857,15 +809,9 @@ machine_subsys_initcall(powernv, opal_init); void opal_shutdown(void) { - unsigned int i; long rc = OPAL_BUSY; - /* First free interrupts, which will also mask them */ - for (i = 0; i < opal_irq_count; i++) { - if (opal_irqs[i]) - free_irq(opal_irqs[i], NULL); - opal_irqs[i] = 0; - } + opal_event_shutdown(); /* * Then sync with OPAL which ensure anything that can |