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Commit 8034f715 authored by Alistair Popple's avatar Alistair Popple Committed by Michael Ellerman
Browse files

powernv/opal-dump: Convert to irq domain 



Convert the opal dump driver to the new opal irq domain.

Signed-off-by: default avatarAlistair Popple <alistair@popple.id.au>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent 74159a70

arch/powerpc/platforms/powernv/opal-dump.c

+17 −39
Original line number Diff line number Diff line
@@ -15,6 +15,7 @@ 
#include <linux/vmalloc.h>

#include <linux/pagemap.h>

#include <linux/delay.h>

#include <linux/interrupt.h>



#include <asm/opal.h>
@@ -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))
@@ -445,9 +414,18 @@ 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",

		pr_err("%s: Can't request OPAL event irq (%d)\n",

		       __func__, rc);

		return;

	}