mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-17 01:04:19 +08:00
skd: rip out bio path
The skd driver has a selectable rq or bio based queueing model. For 3.14, we want to turn this into a single blk-mq interface instead. With the immutable biovecs being merged in 3.13, the bio model would need patches to even work. So rip it out, with a conversion pending for blk-mq in the next release. Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe
parent
1762b57fcb
commit
fcd37eb3c1
@ -354,13 +354,7 @@ struct skd_device {
|
||||
|
||||
u32 timo_slot;
|
||||
|
||||
|
||||
struct work_struct completion_worker;
|
||||
|
||||
struct bio_list bio_queue;
|
||||
int queue_stopped;
|
||||
|
||||
struct list_head flush_list;
|
||||
};
|
||||
|
||||
#define SKD_FLUSH_JOB "skd-flush-jobs"
|
||||
@ -470,11 +464,6 @@ MODULE_PARM_DESC(skd_dbg_level, "s1120 debug level (0,1,2)");
|
||||
module_param(skd_isr_comp_limit, int, 0444);
|
||||
MODULE_PARM_DESC(skd_isr_comp_limit, "s1120 isr comp limit (0=none) default=4");
|
||||
|
||||
static int skd_bio;
|
||||
module_param(skd_bio, int, 0444);
|
||||
MODULE_PARM_DESC(skd_bio,
|
||||
"Register as a bio device instead of block (0, 1) default=0");
|
||||
|
||||
/* Major device number dynamically assigned. */
|
||||
static u32 skd_major;
|
||||
|
||||
@ -512,11 +501,6 @@ static void skd_log_skmsg(struct skd_device *skdev,
|
||||
static void skd_log_skreq(struct skd_device *skdev,
|
||||
struct skd_request_context *skreq, const char *event);
|
||||
|
||||
/* FLUSH FUA flag handling. */
|
||||
static int skd_flush_cmd_enqueue(struct skd_device *, void *);
|
||||
static void *skd_flush_cmd_dequeue(struct skd_device *);
|
||||
|
||||
|
||||
/*
|
||||
*****************************************************************************
|
||||
* READ/WRITE REQUESTS
|
||||
@ -524,40 +508,25 @@ static void *skd_flush_cmd_dequeue(struct skd_device *);
|
||||
*/
|
||||
static void skd_stop_queue(struct skd_device *skdev)
|
||||
{
|
||||
if (!skd_bio)
|
||||
blk_stop_queue(skdev->queue);
|
||||
else
|
||||
skdev->queue_stopped = 1;
|
||||
blk_stop_queue(skdev->queue);
|
||||
}
|
||||
|
||||
static void skd_unstop_queue(struct skd_device *skdev)
|
||||
{
|
||||
if (!skd_bio)
|
||||
queue_flag_clear(QUEUE_FLAG_STOPPED, skdev->queue);
|
||||
else
|
||||
skdev->queue_stopped = 0;
|
||||
queue_flag_clear(QUEUE_FLAG_STOPPED, skdev->queue);
|
||||
}
|
||||
|
||||
static void skd_start_queue(struct skd_device *skdev)
|
||||
{
|
||||
if (!skd_bio) {
|
||||
blk_start_queue(skdev->queue);
|
||||
} else {
|
||||
pr_err("(%s): Starting queue\n", skd_name(skdev));
|
||||
skdev->queue_stopped = 0;
|
||||
skd_request_fn(skdev->queue);
|
||||
}
|
||||
blk_start_queue(skdev->queue);
|
||||
}
|
||||
|
||||
static int skd_queue_stopped(struct skd_device *skdev)
|
||||
{
|
||||
if (!skd_bio)
|
||||
return blk_queue_stopped(skdev->queue);
|
||||
else
|
||||
return skdev->queue_stopped;
|
||||
return blk_queue_stopped(skdev->queue);
|
||||
}
|
||||
|
||||
static void skd_fail_all_pending_blk(struct skd_device *skdev)
|
||||
static void skd_fail_all_pending(struct skd_device *skdev)
|
||||
{
|
||||
struct request_queue *q = skdev->queue;
|
||||
struct request *req;
|
||||
@ -571,42 +540,6 @@ static void skd_fail_all_pending_blk(struct skd_device *skdev)
|
||||
}
|
||||
}
|
||||
|
||||
static void skd_fail_all_pending_bio(struct skd_device *skdev)
|
||||
{
|
||||
struct bio *bio;
|
||||
int error = -EIO;
|
||||
|
||||
for (;; ) {
|
||||
bio = bio_list_pop(&skdev->bio_queue);
|
||||
|
||||
if (bio == NULL)
|
||||
break;
|
||||
|
||||
bio_endio(bio, error);
|
||||
}
|
||||
}
|
||||
|
||||
static void skd_fail_all_pending(struct skd_device *skdev)
|
||||
{
|
||||
if (!skd_bio)
|
||||
skd_fail_all_pending_blk(skdev);
|
||||
else
|
||||
skd_fail_all_pending_bio(skdev);
|
||||
}
|
||||
|
||||
static void skd_make_request(struct request_queue *q, struct bio *bio)
|
||||
{
|
||||
struct skd_device *skdev = q->queuedata;
|
||||
unsigned long flags;
|
||||
|
||||
spin_lock_irqsave(&skdev->lock, flags);
|
||||
|
||||
bio_list_add(&skdev->bio_queue, bio);
|
||||
skd_request_fn(skdev->queue);
|
||||
|
||||
spin_unlock_irqrestore(&skdev->lock, flags);
|
||||
}
|
||||
|
||||
static void
|
||||
skd_prep_rw_cdb(struct skd_scsi_request *scsi_req,
|
||||
int data_dir, unsigned lba,
|
||||
@ -667,18 +600,9 @@ skd_prep_discard_cdb(struct skd_scsi_request *scsi_req,
|
||||
put_unaligned_be64(lba, &buf[8]);
|
||||
put_unaligned_be32(count, &buf[16]);
|
||||
|
||||
if (!skd_bio) {
|
||||
req = skreq->req;
|
||||
blk_add_request_payload(req, page, len);
|
||||
req->buffer = buf;
|
||||
} else {
|
||||
skreq->bio->bi_io_vec->bv_page = page;
|
||||
skreq->bio->bi_io_vec->bv_offset = 0;
|
||||
skreq->bio->bi_io_vec->bv_len = len;
|
||||
|
||||
skreq->bio->bi_vcnt = 1;
|
||||
skreq->bio->bi_phys_segments = 1;
|
||||
}
|
||||
req = skreq->req;
|
||||
blk_add_request_payload(req, page, len);
|
||||
req->buffer = buf;
|
||||
}
|
||||
|
||||
static void skd_request_fn_not_online(struct request_queue *q);
|
||||
@ -690,7 +614,6 @@ static void skd_request_fn(struct request_queue *q)
|
||||
struct fit_msg_hdr *fmh = NULL;
|
||||
struct skd_request_context *skreq;
|
||||
struct request *req = NULL;
|
||||
struct bio *bio = NULL;
|
||||
struct skd_scsi_request *scsi_req;
|
||||
struct page *page;
|
||||
unsigned long io_flags;
|
||||
@ -732,60 +655,27 @@ static void skd_request_fn(struct request_queue *q)
|
||||
|
||||
flush = fua = 0;
|
||||
|
||||
if (!skd_bio) {
|
||||
req = blk_peek_request(q);
|
||||
req = blk_peek_request(q);
|
||||
|
||||
/* Are there any native requests to start? */
|
||||
if (req == NULL)
|
||||
break;
|
||||
/* Are there any native requests to start? */
|
||||
if (req == NULL)
|
||||
break;
|
||||
|
||||
lba = (u32)blk_rq_pos(req);
|
||||
count = blk_rq_sectors(req);
|
||||
data_dir = rq_data_dir(req);
|
||||
io_flags = req->cmd_flags;
|
||||
lba = (u32)blk_rq_pos(req);
|
||||
count = blk_rq_sectors(req);
|
||||
data_dir = rq_data_dir(req);
|
||||
io_flags = req->cmd_flags;
|
||||
|
||||
if (io_flags & REQ_FLUSH)
|
||||
flush++;
|
||||
if (io_flags & REQ_FLUSH)
|
||||
flush++;
|
||||
|
||||
if (io_flags & REQ_FUA)
|
||||
fua++;
|
||||
if (io_flags & REQ_FUA)
|
||||
fua++;
|
||||
|
||||
pr_debug("%s:%s:%d new req=%p lba=%u(0x%x) "
|
||||
"count=%u(0x%x) dir=%d\n",
|
||||
skdev->name, __func__, __LINE__,
|
||||
req, lba, lba, count, count, data_dir);
|
||||
} else {
|
||||
if (!list_empty(&skdev->flush_list)) {
|
||||
/* Process data part of FLUSH request. */
|
||||
bio = (struct bio *)skd_flush_cmd_dequeue(skdev);
|
||||
flush++;
|
||||
pr_debug("%s:%s:%d processing FLUSH request with data.\n",
|
||||
skdev->name, __func__, __LINE__);
|
||||
} else {
|
||||
/* peek at our bio queue */
|
||||
bio = bio_list_peek(&skdev->bio_queue);
|
||||
}
|
||||
|
||||
/* Are there any native requests to start? */
|
||||
if (bio == NULL)
|
||||
break;
|
||||
|
||||
lba = (u32)bio->bi_sector;
|
||||
count = bio_sectors(bio);
|
||||
data_dir = bio_data_dir(bio);
|
||||
io_flags = bio->bi_rw;
|
||||
|
||||
pr_debug("%s:%s:%d new bio=%p lba=%u(0x%x) "
|
||||
"count=%u(0x%x) dir=%d\n",
|
||||
skdev->name, __func__, __LINE__,
|
||||
bio, lba, lba, count, count, data_dir);
|
||||
|
||||
if (io_flags & REQ_FLUSH)
|
||||
flush++;
|
||||
|
||||
if (io_flags & REQ_FUA)
|
||||
fua++;
|
||||
}
|
||||
pr_debug("%s:%s:%d new req=%p lba=%u(0x%x) "
|
||||
"count=%u(0x%x) dir=%d\n",
|
||||
skdev->name, __func__, __LINE__,
|
||||
req, lba, lba, count, count, data_dir);
|
||||
|
||||
/* At this point we know there is a request
|
||||
* (from our bio q or req q depending on the way
|
||||
@ -831,23 +721,9 @@ static void skd_request_fn(struct request_queue *q)
|
||||
* the native request. Note that skd_request_context is
|
||||
* available but is still at the head of the free list.
|
||||
*/
|
||||
if (!skd_bio) {
|
||||
blk_start_request(req);
|
||||
skreq->req = req;
|
||||
skreq->fitmsg_id = 0;
|
||||
} else {
|
||||
if (unlikely(flush == SKD_FLUSH_DATA_SECOND)) {
|
||||
skreq->bio = bio;
|
||||
} else {
|
||||
skreq->bio = bio_list_pop(&skdev->bio_queue);
|
||||
SKD_ASSERT(skreq->bio == bio);
|
||||
skreq->start_time = jiffies;
|
||||
part_inc_in_flight(&skdev->disk->part0,
|
||||
bio_data_dir(bio));
|
||||
}
|
||||
|
||||
skreq->fitmsg_id = 0;
|
||||
}
|
||||
blk_start_request(req);
|
||||
skreq->req = req;
|
||||
skreq->fitmsg_id = 0;
|
||||
|
||||
/* Either a FIT msg is in progress or we have to start one. */
|
||||
if (skmsg == NULL) {
|
||||
@ -923,8 +799,7 @@ static void skd_request_fn(struct request_queue *q)
|
||||
if (fua)
|
||||
scsi_req->cdb[1] |= SKD_FUA_NV;
|
||||
|
||||
if ((!skd_bio && !req->bio) ||
|
||||
(skd_bio && flush == SKD_FLUSH_ZERO_SIZE_FIRST))
|
||||
if (!req->bio)
|
||||
goto skip_sg;
|
||||
|
||||
error = skd_preop_sg_list(skdev, skreq);
|
||||
@ -1011,8 +886,7 @@ skip_sg:
|
||||
* If req is non-NULL it means there is something to do but
|
||||
* we are out of a resource.
|
||||
*/
|
||||
if (((!skd_bio) && req) ||
|
||||
((skd_bio) && bio_list_peek(&skdev->bio_queue)))
|
||||
if (req)
|
||||
skd_stop_queue(skdev);
|
||||
}
|
||||
|
||||
@ -1045,7 +919,7 @@ static void skd_end_request_blk(struct skd_device *skdev,
|
||||
__blk_end_request_all(skreq->req, error);
|
||||
}
|
||||
|
||||
static int skd_preop_sg_list_blk(struct skd_device *skdev,
|
||||
static int skd_preop_sg_list(struct skd_device *skdev,
|
||||
struct skd_request_context *skreq)
|
||||
{
|
||||
struct request *req = skreq->req;
|
||||
@ -1108,7 +982,7 @@ static int skd_preop_sg_list_blk(struct skd_device *skdev,
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void skd_postop_sg_list_blk(struct skd_device *skdev,
|
||||
static void skd_postop_sg_list(struct skd_device *skdev,
|
||||
struct skd_request_context *skreq)
|
||||
{
|
||||
int writing = skreq->sg_data_dir == SKD_DATA_DIR_HOST_TO_CARD;
|
||||
@ -1124,184 +998,10 @@ static void skd_postop_sg_list_blk(struct skd_device *skdev,
|
||||
pci_unmap_sg(skdev->pdev, &skreq->sg[0], skreq->n_sg, pci_dir);
|
||||
}
|
||||
|
||||
static void skd_end_request_bio(struct skd_device *skdev,
|
||||
struct skd_request_context *skreq, int error)
|
||||
{
|
||||
struct bio *bio = skreq->bio;
|
||||
int rw = bio_data_dir(bio);
|
||||
unsigned long io_flags = bio->bi_rw;
|
||||
|
||||
if ((io_flags & REQ_DISCARD) &&
|
||||
(skreq->discard_page == 1)) {
|
||||
pr_debug("%s:%s:%d biomode: skd_end_request: freeing DISCARD page.\n",
|
||||
skdev->name, __func__, __LINE__);
|
||||
free_page((unsigned long)page_address(bio->bi_io_vec->bv_page));
|
||||
}
|
||||
|
||||
if (unlikely(error)) {
|
||||
u32 lba = (u32)skreq->bio->bi_sector;
|
||||
u32 count = bio_sectors(skreq->bio);
|
||||
char *cmd = (rw == WRITE) ? "write" : "read";
|
||||
pr_err("(%s): Error cmd=%s sect=%u count=%u id=0x%x\n",
|
||||
skd_name(skdev), cmd, lba, count, skreq->id);
|
||||
}
|
||||
{
|
||||
int cpu = part_stat_lock();
|
||||
|
||||
if (likely(!error)) {
|
||||
part_stat_inc(cpu, &skdev->disk->part0, ios[rw]);
|
||||
part_stat_add(cpu, &skdev->disk->part0, sectors[rw],
|
||||
bio_sectors(bio));
|
||||
}
|
||||
part_stat_add(cpu, &skdev->disk->part0, ticks[rw],
|
||||
jiffies - skreq->start_time);
|
||||
part_dec_in_flight(&skdev->disk->part0, rw);
|
||||
part_stat_unlock();
|
||||
}
|
||||
|
||||
pr_debug("%s:%s:%d id=0x%x error=%d\n",
|
||||
skdev->name, __func__, __LINE__, skreq->id, error);
|
||||
|
||||
bio_endio(skreq->bio, error);
|
||||
}
|
||||
|
||||
static int skd_preop_sg_list_bio(struct skd_device *skdev,
|
||||
struct skd_request_context *skreq)
|
||||
{
|
||||
struct bio *bio = skreq->bio;
|
||||
int writing = skreq->sg_data_dir == SKD_DATA_DIR_HOST_TO_CARD;
|
||||
int pci_dir = writing ? PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE;
|
||||
int n_sg;
|
||||
int i;
|
||||
struct bio_vec *vec;
|
||||
struct fit_sg_descriptor *sgd;
|
||||
u64 dma_addr;
|
||||
u32 count;
|
||||
int errs = 0;
|
||||
unsigned int io_flags = 0;
|
||||
io_flags |= bio->bi_rw;
|
||||
|
||||
skreq->sg_byte_count = 0;
|
||||
n_sg = skreq->n_sg = skreq->bio->bi_vcnt;
|
||||
|
||||
if (n_sg <= 0)
|
||||
return -EINVAL;
|
||||
|
||||
if (n_sg > skdev->sgs_per_request) {
|
||||
pr_err("(%s): sg overflow n=%d\n",
|
||||
skd_name(skdev), n_sg);
|
||||
skreq->n_sg = 0;
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
for (i = 0; i < skreq->n_sg; i++) {
|
||||
vec = bio_iovec_idx(bio, i);
|
||||
dma_addr = pci_map_page(skdev->pdev,
|
||||
vec->bv_page,
|
||||
vec->bv_offset, vec->bv_len, pci_dir);
|
||||
count = vec->bv_len;
|
||||
|
||||
if (count == 0 || count > 64u * 1024u || (count & 3) != 0
|
||||
|| (dma_addr & 3) != 0) {
|
||||
pr_err(
|
||||
"(%s): Bad sg ix=%d count=%d addr=0x%llx\n",
|
||||
skd_name(skdev), i, count, dma_addr);
|
||||
errs++;
|
||||
}
|
||||
|
||||
sgd = &skreq->sksg_list[i];
|
||||
|
||||
sgd->control = FIT_SGD_CONTROL_NOT_LAST;
|
||||
sgd->byte_count = vec->bv_len;
|
||||
skreq->sg_byte_count += vec->bv_len;
|
||||
sgd->host_side_addr = dma_addr;
|
||||
sgd->dev_side_addr = 0; /* not used */
|
||||
}
|
||||
|
||||
skreq->sksg_list[n_sg - 1].next_desc_ptr = 0LL;
|
||||
skreq->sksg_list[n_sg - 1].control = FIT_SGD_CONTROL_LAST;
|
||||
|
||||
|
||||
if (!(io_flags & REQ_DISCARD)) {
|
||||
count = bio_sectors(bio) << 9u;
|
||||
if (count != skreq->sg_byte_count) {
|
||||
pr_err("(%s): mismatch count sg=%d req=%d\n",
|
||||
skd_name(skdev), skreq->sg_byte_count, count);
|
||||
errs++;
|
||||
}
|
||||
}
|
||||
|
||||
if (unlikely(skdev->dbg_level > 1)) {
|
||||
pr_debug("%s:%s:%d skreq=%x sksg_list=%p sksg_dma=%llx\n",
|
||||
skdev->name, __func__, __LINE__,
|
||||
skreq->id, skreq->sksg_list, skreq->sksg_dma_address);
|
||||
for (i = 0; i < n_sg; i++) {
|
||||
struct fit_sg_descriptor *sgd = &skreq->sksg_list[i];
|
||||
pr_debug("%s:%s:%d sg[%d] count=%u ctrl=0x%x "
|
||||
"addr=0x%llx next=0x%llx\n",
|
||||
skdev->name, __func__, __LINE__,
|
||||
i, sgd->byte_count, sgd->control,
|
||||
sgd->host_side_addr, sgd->next_desc_ptr);
|
||||
}
|
||||
}
|
||||
|
||||
if (errs != 0) {
|
||||
skd_postop_sg_list(skdev, skreq);
|
||||
skreq->n_sg = 0;
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int skd_preop_sg_list(struct skd_device *skdev,
|
||||
struct skd_request_context *skreq)
|
||||
{
|
||||
if (!skd_bio)
|
||||
return skd_preop_sg_list_blk(skdev, skreq);
|
||||
else
|
||||
return skd_preop_sg_list_bio(skdev, skreq);
|
||||
}
|
||||
|
||||
static void skd_postop_sg_list_bio(struct skd_device *skdev,
|
||||
struct skd_request_context *skreq)
|
||||
{
|
||||
int writing = skreq->sg_data_dir == SKD_DATA_DIR_HOST_TO_CARD;
|
||||
int pci_dir = writing ? PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE;
|
||||
int i;
|
||||
struct fit_sg_descriptor *sgd;
|
||||
|
||||
/*
|
||||
* restore the next ptr for next IO request so we
|
||||
* don't have to set it every time.
|
||||
*/
|
||||
skreq->sksg_list[skreq->n_sg - 1].next_desc_ptr =
|
||||
skreq->sksg_dma_address +
|
||||
((skreq->n_sg) * sizeof(struct fit_sg_descriptor));
|
||||
|
||||
for (i = 0; i < skreq->n_sg; i++) {
|
||||
sgd = &skreq->sksg_list[i];
|
||||
pci_unmap_page(skdev->pdev, sgd->host_side_addr,
|
||||
sgd->byte_count, pci_dir);
|
||||
}
|
||||
}
|
||||
|
||||
static void skd_postop_sg_list(struct skd_device *skdev,
|
||||
struct skd_request_context *skreq)
|
||||
{
|
||||
if (!skd_bio)
|
||||
skd_postop_sg_list_blk(skdev, skreq);
|
||||
else
|
||||
skd_postop_sg_list_bio(skdev, skreq);
|
||||
}
|
||||
|
||||
static void skd_end_request(struct skd_device *skdev,
|
||||
struct skd_request_context *skreq, int error)
|
||||
{
|
||||
if (likely(!skd_bio))
|
||||
skd_end_request_blk(skdev, skreq, error);
|
||||
else
|
||||
skd_end_request_bio(skdev, skreq, error);
|
||||
skd_end_request_blk(skdev, skreq, error);
|
||||
}
|
||||
|
||||
static void skd_request_fn_not_online(struct request_queue *q)
|
||||
@ -2754,13 +2454,10 @@ static void skd_resolve_req_exception(struct skd_device *skdev,
|
||||
break;
|
||||
|
||||
case SKD_CHECK_STATUS_REQUEUE_REQUEST:
|
||||
if (!skd_bio) {
|
||||
if ((unsigned long) ++skreq->req->special <
|
||||
SKD_MAX_RETRIES) {
|
||||
skd_log_skreq(skdev, skreq, "retry");
|
||||
skd_requeue_request(skdev, skreq);
|
||||
break;
|
||||
}
|
||||
if ((unsigned long) ++skreq->req->special < SKD_MAX_RETRIES) {
|
||||
skd_log_skreq(skdev, skreq, "retry");
|
||||
skd_requeue_request(skdev, skreq);
|
||||
break;
|
||||
}
|
||||
/* fall through to report error */
|
||||
|
||||
@ -2774,12 +2471,7 @@ static void skd_resolve_req_exception(struct skd_device *skdev,
|
||||
static void skd_requeue_request(struct skd_device *skdev,
|
||||
struct skd_request_context *skreq)
|
||||
{
|
||||
if (!skd_bio) {
|
||||
blk_requeue_request(skdev->queue, skreq->req);
|
||||
} else {
|
||||
bio_list_add_head(&skdev->bio_queue, skreq->bio);
|
||||
skreq->bio = NULL;
|
||||
}
|
||||
blk_requeue_request(skdev->queue, skreq->req);
|
||||
}
|
||||
|
||||
|
||||
@ -2840,11 +2532,7 @@ static void skd_release_skreq(struct skd_device *skdev,
|
||||
/*
|
||||
* Reset backpointer
|
||||
*/
|
||||
if (likely(!skd_bio))
|
||||
skreq->req = NULL;
|
||||
else
|
||||
skreq->bio = NULL;
|
||||
|
||||
skreq->req = NULL;
|
||||
|
||||
/*
|
||||
* Reclaim the skd_request_context
|
||||
@ -3084,8 +2772,6 @@ static int skd_isr_completion_posted(struct skd_device *skdev,
|
||||
u32 cmp_bytes = 0;
|
||||
int rc = 0;
|
||||
int processed = 0;
|
||||
int ret;
|
||||
|
||||
|
||||
for (;; ) {
|
||||
SKD_ASSERT(skdev->skcomp_ix < SKD_N_COMPLETION_ENTRY);
|
||||
@ -3180,8 +2866,7 @@ static int skd_isr_completion_posted(struct skd_device *skdev,
|
||||
if (skreq->n_sg > 0)
|
||||
skd_postop_sg_list(skdev, skreq);
|
||||
|
||||
if (((!skd_bio) && !skreq->req) ||
|
||||
((skd_bio) && !skreq->bio)) {
|
||||
if (!skreq->req) {
|
||||
pr_debug("%s:%s:%d NULL backptr skdreq %p, "
|
||||
"req=0x%x req_id=0x%x\n",
|
||||
skdev->name, __func__, __LINE__,
|
||||
@ -3191,30 +2876,10 @@ static int skd_isr_completion_posted(struct skd_device *skdev,
|
||||
* Capture the outcome and post it back to the
|
||||
* native request.
|
||||
*/
|
||||
if (likely(cmp_status == SAM_STAT_GOOD)) {
|
||||
if (unlikely(skreq->flush_cmd)) {
|
||||
if (skd_bio) {
|
||||
/* if empty size bio, we are all done */
|
||||
if (bio_sectors(skreq->bio) == 0) {
|
||||
skd_end_request(skdev, skreq, 0);
|
||||
} else {
|
||||
ret = skd_flush_cmd_enqueue(skdev, (void *)skreq->bio);
|
||||
if (ret != 0) {
|
||||
pr_err("Failed to enqueue flush bio with Data. Err=%d.\n", ret);
|
||||
skd_end_request(skdev, skreq, ret);
|
||||
} else {
|
||||
((*enqueued)++);
|
||||
}
|
||||
}
|
||||
} else {
|
||||
skd_end_request(skdev, skreq, 0);
|
||||
}
|
||||
} else {
|
||||
skd_end_request(skdev, skreq, 0);
|
||||
}
|
||||
} else {
|
||||
if (likely(cmp_status == SAM_STAT_GOOD))
|
||||
skd_end_request(skdev, skreq, 0);
|
||||
else
|
||||
skd_resolve_req_exception(skdev, skreq);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
@ -3645,29 +3310,20 @@ static void skd_recover_requests(struct skd_device *skdev, int requeue)
|
||||
skd_log_skreq(skdev, skreq, "recover");
|
||||
|
||||
SKD_ASSERT((skreq->id & SKD_ID_INCR) != 0);
|
||||
if (!skd_bio)
|
||||
SKD_ASSERT(skreq->req != NULL);
|
||||
else
|
||||
SKD_ASSERT(skreq->bio != NULL);
|
||||
SKD_ASSERT(skreq->req != NULL);
|
||||
|
||||
/* Release DMA resources for the request. */
|
||||
if (skreq->n_sg > 0)
|
||||
skd_postop_sg_list(skdev, skreq);
|
||||
|
||||
if (!skd_bio) {
|
||||
if (requeue &&
|
||||
(unsigned long) ++skreq->req->special <
|
||||
SKD_MAX_RETRIES)
|
||||
skd_requeue_request(skdev, skreq);
|
||||
else
|
||||
skd_end_request(skdev, skreq, -EIO);
|
||||
} else
|
||||
if (requeue &&
|
||||
(unsigned long) ++skreq->req->special <
|
||||
SKD_MAX_RETRIES)
|
||||
skd_requeue_request(skdev, skreq);
|
||||
else
|
||||
skd_end_request(skdev, skreq, -EIO);
|
||||
|
||||
if (!skd_bio)
|
||||
skreq->req = NULL;
|
||||
else
|
||||
skreq->bio = NULL;
|
||||
skreq->req = NULL;
|
||||
|
||||
skreq->state = SKD_REQ_STATE_IDLE;
|
||||
skreq->id += SKD_ID_INCR;
|
||||
@ -4580,16 +4236,11 @@ static struct skd_device *skd_construct(struct pci_dev *pdev)
|
||||
skdev->sgs_per_request = skd_sgs_per_request;
|
||||
skdev->dbg_level = skd_dbg_level;
|
||||
|
||||
if (skd_bio)
|
||||
bio_list_init(&skdev->bio_queue);
|
||||
|
||||
|
||||
atomic_set(&skdev->device_count, 0);
|
||||
|
||||
spin_lock_init(&skdev->lock);
|
||||
|
||||
INIT_WORK(&skdev->completion_worker, skd_completion_worker);
|
||||
INIT_LIST_HEAD(&skdev->flush_list);
|
||||
|
||||
pr_debug("%s:%s:%d skcomp\n", skdev->name, __func__, __LINE__);
|
||||
rc = skd_cons_skcomp(skdev);
|
||||
@ -4941,13 +4592,7 @@ static int skd_cons_disk(struct skd_device *skdev)
|
||||
disk->fops = &skd_blockdev_ops;
|
||||
disk->private_data = skdev;
|
||||
|
||||
if (!skd_bio) {
|
||||
q = blk_init_queue(skd_request_fn, &skdev->lock);
|
||||
} else {
|
||||
q = blk_alloc_queue(GFP_KERNEL);
|
||||
q->queue_flags = QUEUE_FLAG_IO_STAT | QUEUE_FLAG_STACKABLE;
|
||||
}
|
||||
|
||||
q = blk_init_queue(skd_request_fn, &skdev->lock);
|
||||
if (!q) {
|
||||
rc = -ENOMEM;
|
||||
goto err_out;
|
||||
@ -4957,11 +4602,6 @@ static int skd_cons_disk(struct skd_device *skdev)
|
||||
disk->queue = q;
|
||||
q->queuedata = skdev;
|
||||
|
||||
if (skd_bio) {
|
||||
q->queue_lock = &skdev->lock;
|
||||
blk_queue_make_request(q, skd_make_request);
|
||||
}
|
||||
|
||||
blk_queue_flush(q, REQ_FLUSH | REQ_FUA);
|
||||
blk_queue_max_segments(q, skdev->sgs_per_request);
|
||||
blk_queue_max_hw_sectors(q, SKD_N_MAX_SECTORS);
|
||||
@ -5794,35 +5434,19 @@ static void skd_log_skreq(struct skd_device *skdev,
|
||||
skdev->name, __func__, __LINE__,
|
||||
skreq->timeout_stamp, skreq->sg_data_dir, skreq->n_sg);
|
||||
|
||||
if (!skd_bio) {
|
||||
if (skreq->req != NULL) {
|
||||
struct request *req = skreq->req;
|
||||
u32 lba = (u32)blk_rq_pos(req);
|
||||
u32 count = blk_rq_sectors(req);
|
||||
if (skreq->req != NULL) {
|
||||
struct request *req = skreq->req;
|
||||
u32 lba = (u32)blk_rq_pos(req);
|
||||
u32 count = blk_rq_sectors(req);
|
||||
|
||||
pr_debug("%s:%s:%d "
|
||||
"req=%p lba=%u(0x%x) count=%u(0x%x) dir=%d\n",
|
||||
skdev->name, __func__, __LINE__,
|
||||
req, lba, lba, count, count,
|
||||
(int)rq_data_dir(req));
|
||||
} else
|
||||
pr_debug("%s:%s:%d req=NULL\n",
|
||||
skdev->name, __func__, __LINE__);
|
||||
} else {
|
||||
if (skreq->bio != NULL) {
|
||||
struct bio *bio = skreq->bio;
|
||||
u32 lba = (u32)bio->bi_sector;
|
||||
u32 count = bio_sectors(bio);
|
||||
|
||||
pr_debug("%s:%s:%d "
|
||||
"bio=%p lba=%u(0x%x) count=%u(0x%x) dir=%d\n",
|
||||
skdev->name, __func__, __LINE__,
|
||||
bio, lba, lba, count, count,
|
||||
(int)bio_data_dir(bio));
|
||||
} else
|
||||
pr_debug("%s:%s:%d req=NULL\n",
|
||||
skdev->name, __func__, __LINE__);
|
||||
}
|
||||
pr_debug("%s:%s:%d "
|
||||
"req=%p lba=%u(0x%x) count=%u(0x%x) dir=%d\n",
|
||||
skdev->name, __func__, __LINE__,
|
||||
req, lba, lba, count, count,
|
||||
(int)rq_data_dir(req));
|
||||
} else
|
||||
pr_debug("%s:%s:%d req=NULL\n",
|
||||
skdev->name, __func__, __LINE__);
|
||||
}
|
||||
|
||||
/*
|
||||
@ -5918,34 +5542,5 @@ static void __exit skd_exit(void)
|
||||
kmem_cache_destroy(skd_flush_slab);
|
||||
}
|
||||
|
||||
static int
|
||||
skd_flush_cmd_enqueue(struct skd_device *skdev, void *cmd)
|
||||
{
|
||||
struct skd_flush_cmd *item;
|
||||
|
||||
item = kmem_cache_zalloc(skd_flush_slab, GFP_ATOMIC);
|
||||
if (!item) {
|
||||
pr_err("skd_flush_cmd_enqueue: Failed to allocated item.\n");
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
item->cmd = cmd;
|
||||
list_add_tail(&item->flist, &skdev->flush_list);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void *
|
||||
skd_flush_cmd_dequeue(struct skd_device *skdev)
|
||||
{
|
||||
void *cmd;
|
||||
struct skd_flush_cmd *item;
|
||||
|
||||
item = list_entry(skdev->flush_list.next, struct skd_flush_cmd, flist);
|
||||
list_del_init(&item->flist);
|
||||
cmd = item->cmd;
|
||||
kmem_cache_free(skd_flush_slab, item);
|
||||
return cmd;
|
||||
}
|
||||
|
||||
module_init(skd_init);
|
||||
module_exit(skd_exit);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user