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ide: convert to blk-mq

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ide-disk and ide-cd tested as working just fine, ide-tape and
ide-floppy haven't. But the latter don't require changes, so they
should work without issue.

Add helper function to insert a request from a work queue, since we
cannot invoke the blk-mq request insertion from IRQ context.

Cc: David Miller <davem@davemloft.net>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe
2018-10-26 09:53:52 -06:00
parent d0be12274d
commit 600335205b
8 changed files with 239 additions and 179 deletions
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13
include/linux/ide.h
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@@ -10,7 +10,7 @@
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/ata.h>
#include <linux/blkdev.h>
#include <linux/blk-mq.h>
#include <linux/proc_fs.h>
#include <linux/interrupt.h>
#include <linux/bitops.h>
@@ -529,6 +529,10 @@ struct ide_drive_s {
struct request_queue *queue; /* request queue */
int (*prep_rq)(struct ide_drive_s *, struct request *);
struct blk_mq_tag_set tag_set;
struct request *rq; /* current request */
void *driver_data; /* extra driver data */
u16 *id; /* identification info */
@@ -612,6 +616,10 @@ struct ide_drive_s {
bool sense_rq_armed;
struct request *sense_rq;
struct request_sense sense_data;
/* async sense insertion */
struct work_struct rq_work;
struct list_head rq_list;
};
typedef struct ide_drive_s ide_drive_t;
@@ -1089,6 +1097,7 @@ extern int ide_pci_clk;
int ide_end_rq(ide_drive_t *, struct request *, blk_status_t, unsigned int);
void ide_kill_rq(ide_drive_t *, struct request *);
void ide_insert_request_head(ide_drive_t *, struct request *);
void __ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
void ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int);
@@ -1208,7 +1217,7 @@ extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
extern void ide_timer_expiry(struct timer_list *t);
extern irqreturn_t ide_intr(int irq, void *dev_id);
extern void do_ide_request(struct request_queue *);
extern blk_status_t ide_queue_rq(struct blk_mq_hw_ctx *, const struct blk_mq_queue_data *);
extern void ide_requeue_and_plug(ide_drive_t *drive, struct request *rq);
void ide_init_disk(struct gendisk *, ide_drive_t *);