提交 8034f715 编写于 作者: A Alistair Popple 提交者: Michael Ellerman

powernv/opal-dump: Convert to irq domain

Convert the opal dump driver to the new opal irq domain.
Signed-off-by: NAlistair Popple <alistair@popple.id.au>
Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
上级 74159a70
......@@ -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;
}
......
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