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| author | Alistair Popple <alistair@popple.id.au> | 2015-05-15 07:06:43 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2015-05-22 08:14:38 +0300 |
| commit | 8034f715f0a5fce97b14bacd47eefb1513316b17 (patch) | |
| tree | 00095da6fa9056ab34ec307d8253ffbf09ebce09 /arch | |
| parent | 74159a70283ba685cd4d856cfc4438596524b1f2 (diff) | |
| download | linux-8034f715f0a5fce97b14bacd47eefb1513316b17.tar.xz | |
powernv/opal-dump: Convert to irq domain
Convert the opal dump driver to the new opal irq domain.
Signed-off-by: Alistair Popple <alistair@popple.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/platforms/powernv/opal-dump.c | 56 |
1 files changed, 17 insertions, 39 deletions
diff --git a/arch/powerpc/platforms/powernv/opal-dump.c b/arch/powerpc/platforms/powernv/opal-dump.c index 5aa9c1ce4de3..2ee96431f736 100644 --- a/arch/powerpc/platforms/powernv/opal-dump.c +++ b/arch/powerpc/platforms/powernv/opal-dump.c @@ -15,6 +15,7 @@ #include <linux/vmalloc.h> #include <linux/pagemap.h> #include <linux/delay.h> +#include <linux/interrupt.h> #include <asm/opal.h> @@ -60,7 +61,7 @@ static ssize_t dump_type_show(struct dump_obj *dump_obj, struct dump_attribute *attr, char *buf) { - + return sprintf(buf, "0x%x %s\n", dump_obj->type, dump_type_to_string(dump_obj->type)); } @@ -363,7 +364,7 @@ static struct dump_obj *create_dump_obj(uint32_t id, size_t size, return dump; } -static int process_dump(void) +static irqreturn_t process_dump(int irq, void *data) { int rc; uint32_t dump_id, dump_size, dump_type; @@ -387,45 +388,13 @@ static int process_dump(void) if (!dump) return -1; - return 0; -} - -static void dump_work_fn(struct work_struct *work) -{ - process_dump(); + return IRQ_HANDLED; } -static DECLARE_WORK(dump_work, dump_work_fn); - -static void schedule_process_dump(void) -{ - schedule_work(&dump_work); -} - -/* - * New dump available notification - * - * Once we get notification, we add sysfs entries for it. - * We only fetch the dump on demand, and create sysfs asynchronously. - */ -static int dump_event(struct notifier_block *nb, - unsigned long events, void *change) -{ - if (events & OPAL_EVENT_DUMP_AVAIL) - schedule_process_dump(); - - return 0; -} - -static struct notifier_block dump_nb = { - .notifier_call = dump_event, - .next = NULL, - .priority = 0 -}; - void __init opal_platform_dump_init(void) { int rc; + int dump_irq; /* ELOG not supported by firmware */ if (!opal_check_token(OPAL_DUMP_READ)) @@ -445,10 +414,19 @@ void __init opal_platform_dump_init(void) return; } - rc = opal_notifier_register(&dump_nb); + dump_irq = opal_event_request(ilog2(OPAL_EVENT_DUMP_AVAIL)); + if (!dump_irq) { + pr_err("%s: Can't register OPAL event irq (%d)\n", + __func__, dump_irq); + return; + } + + rc = request_threaded_irq(dump_irq, NULL, process_dump, + IRQF_TRIGGER_HIGH | IRQF_ONESHOT, + "opal-dump", NULL); if (rc) { - pr_warn("%s: Can't register OPAL event notifier (%d)\n", - __func__, rc); + pr_err("%s: Can't request OPAL event irq (%d)\n", + __func__, rc); return; } |