#include <linux/sizes.h>
#include "nd.h"
-struct nd_blk_device {
- struct request_queue *queue;
- struct gendisk *disk;
- struct nd_namespace_blk *nsblk;
- struct nd_blk_region *ndbr;
- size_t disk_size;
- u32 sector_size;
- u32 internal_lbasize;
-};
+static u32 nsblk_meta_size(struct nd_namespace_blk *nsblk)
+{
+ return nsblk->lbasize - ((nsblk->lbasize >= 4096) ? 4096 : 512);
+}
+
+static u32 nsblk_internal_lbasize(struct nd_namespace_blk *nsblk)
+{
+ return roundup(nsblk->lbasize, INT_LBASIZE_ALIGNMENT);
+}
-static u32 nd_blk_meta_size(struct nd_blk_device *blk_dev)
+static u32 nsblk_sector_size(struct nd_namespace_blk *nsblk)
{
- return blk_dev->nsblk->lbasize - blk_dev->sector_size;
+ return nsblk->lbasize - nsblk_meta_size(nsblk);
}
static resource_size_t to_dev_offset(struct nd_namespace_blk *nsblk,
return SIZE_MAX;
}
+static struct nd_blk_region *to_ndbr(struct nd_namespace_blk *nsblk)
+{
+ struct nd_region *nd_region;
+ struct device *parent;
+
+ parent = nsblk->common.dev.parent;
+ nd_region = container_of(parent, struct nd_region, dev);
+ return container_of(nd_region, struct nd_blk_region, nd_region);
+}
+
#ifdef CONFIG_BLK_DEV_INTEGRITY
-static int nd_blk_rw_integrity(struct nd_blk_device *blk_dev,
- struct bio_integrity_payload *bip, u64 lba,
- int rw)
+static int nd_blk_rw_integrity(struct nd_namespace_blk *nsblk,
+ struct bio_integrity_payload *bip, u64 lba, int rw)
{
- unsigned int len = nd_blk_meta_size(blk_dev);
+ struct nd_blk_region *ndbr = to_ndbr(nsblk);
+ unsigned int len = nsblk_meta_size(nsblk);
resource_size_t dev_offset, ns_offset;
- struct nd_namespace_blk *nsblk;
- struct nd_blk_region *ndbr;
+ u32 internal_lbasize, sector_size;
int err = 0;
- nsblk = blk_dev->nsblk;
- ndbr = blk_dev->ndbr;
- ns_offset = lba * blk_dev->internal_lbasize + blk_dev->sector_size;
+ internal_lbasize = nsblk_internal_lbasize(nsblk);
+ sector_size = nsblk_sector_size(nsblk);
+ ns_offset = lba * internal_lbasize + sector_size;
dev_offset = to_dev_offset(nsblk, ns_offset, len);
if (dev_offset == SIZE_MAX)
return -EIO;
}
#else /* CONFIG_BLK_DEV_INTEGRITY */
-static int nd_blk_rw_integrity(struct nd_blk_device *blk_dev,
- struct bio_integrity_payload *bip, u64 lba,
- int rw)
+static int nd_blk_rw_integrity(struct nd_namespace_blk *nsblk,
+ struct bio_integrity_payload *bip, u64 lba, int rw)
{
return 0;
}
#endif
-static int nd_blk_do_bvec(struct nd_blk_device *blk_dev,
- struct bio_integrity_payload *bip, struct page *page,
- unsigned int len, unsigned int off, int rw,
- sector_t sector)
+static int nsblk_do_bvec(struct nd_namespace_blk *nsblk,
+ struct bio_integrity_payload *bip, struct page *page,
+ unsigned int len, unsigned int off, int rw, sector_t sector)
{
- struct nd_blk_region *ndbr = blk_dev->ndbr;
+ struct nd_blk_region *ndbr = to_ndbr(nsblk);
resource_size_t dev_offset, ns_offset;
+ u32 internal_lbasize, sector_size;
int err = 0;
void *iobuf;
u64 lba;
+ internal_lbasize = nsblk_internal_lbasize(nsblk);
+ sector_size = nsblk_sector_size(nsblk);
while (len) {
unsigned int cur_len;
* Block Window setup/move steps. the do_io routine is capable
* of handling len <= PAGE_SIZE.
*/
- cur_len = bip ? min(len, blk_dev->sector_size) : len;
+ cur_len = bip ? min(len, sector_size) : len;
- lba = div_u64(sector << SECTOR_SHIFT, blk_dev->sector_size);
- ns_offset = lba * blk_dev->internal_lbasize;
- dev_offset = to_dev_offset(blk_dev->nsblk, ns_offset, cur_len);
+ lba = div_u64(sector << SECTOR_SHIFT, sector_size);
+ ns_offset = lba * internal_lbasize;
+ dev_offset = to_dev_offset(nsblk, ns_offset, cur_len);
if (dev_offset == SIZE_MAX)
return -EIO;
return err;
if (bip) {
- err = nd_blk_rw_integrity(blk_dev, bip, lba, rw);
+ err = nd_blk_rw_integrity(nsblk, bip, lba, rw);
if (err)
return err;
}
len -= cur_len;
off += cur_len;
- sector += blk_dev->sector_size >> SECTOR_SHIFT;
+ sector += sector_size >> SECTOR_SHIFT;
}
return err;
static blk_qc_t nd_blk_make_request(struct request_queue *q, struct bio *bio)
{
- struct block_device *bdev = bio->bi_bdev;
- struct gendisk *disk = bdev->bd_disk;
struct bio_integrity_payload *bip;
- struct nd_blk_device *blk_dev;
+ struct nd_namespace_blk *nsblk;
struct bvec_iter iter;
unsigned long start;
struct bio_vec bvec;
}
bip = bio_integrity(bio);
- blk_dev = disk->private_data;
+ nsblk = q->queuedata;
rw = bio_data_dir(bio);
do_acct = nd_iostat_start(bio, &start);
bio_for_each_segment(bvec, bio, iter) {
unsigned int len = bvec.bv_len;
BUG_ON(len > PAGE_SIZE);
- err = nd_blk_do_bvec(blk_dev, bip, bvec.bv_page, len,
- bvec.bv_offset, rw, iter.bi_sector);
+ err = nsblk_do_bvec(nsblk, bip, bvec.bv_page, len,
+ bvec.bv_offset, rw, iter.bi_sector);
if (err) {
- dev_info(&blk_dev->nsblk->common.dev,
+ dev_dbg(&nsblk->common.dev,
"io error in %s sector %lld, len %d,\n",
(rw == READ) ? "READ" : "WRITE",
(unsigned long long) iter.bi_sector, len);
return BLK_QC_T_NONE;
}
-static int nd_blk_rw_bytes(struct nd_namespace_common *ndns,
+static int nsblk_rw_bytes(struct nd_namespace_common *ndns,
resource_size_t offset, void *iobuf, size_t n, int rw)
{
- struct nd_blk_device *blk_dev = dev_get_drvdata(ndns->claim);
- struct nd_namespace_blk *nsblk = blk_dev->nsblk;
- struct nd_blk_region *ndbr = blk_dev->ndbr;
+ struct nd_namespace_blk *nsblk = to_nd_namespace_blk(&ndns->dev);
+ struct nd_blk_region *ndbr = to_ndbr(nsblk);
resource_size_t dev_offset;
dev_offset = to_dev_offset(nsblk, offset, n);
- if (unlikely(offset + n > blk_dev->disk_size)) {
+ if (unlikely(offset + n > nsblk->size)) {
dev_WARN_ONCE(&ndns->dev, 1, "request out of range\n");
return -EFAULT;
}
.revalidate_disk = nvdimm_revalidate_disk,
};
-static int nd_blk_attach_disk(struct nd_namespace_common *ndns,
- struct nd_blk_device *blk_dev)
+static void nd_blk_release_queue(void *q)
+{
+ blk_cleanup_queue(q);
+}
+
+static void nd_blk_release_disk(void *disk)
+{
+ del_gendisk(disk);
+ put_disk(disk);
+}
+
+static int nsblk_attach_disk(struct nd_namespace_blk *nsblk)
{
+ struct device *dev = &nsblk->common.dev;
resource_size_t available_disk_size;
+ struct request_queue *q;
struct gendisk *disk;
u64 internal_nlba;
- internal_nlba = div_u64(blk_dev->disk_size, blk_dev->internal_lbasize);
- available_disk_size = internal_nlba * blk_dev->sector_size;
+ internal_nlba = div_u64(nsblk->size, nsblk_internal_lbasize(nsblk));
+ available_disk_size = internal_nlba * nsblk_sector_size(nsblk);
- blk_dev->queue = blk_alloc_queue(GFP_KERNEL);
- if (!blk_dev->queue)
+ q = blk_alloc_queue(GFP_KERNEL);
+ if (!q)
return -ENOMEM;
+ if (devm_add_action(dev, nd_blk_release_queue, q)) {
+ blk_cleanup_queue(q);
+ return -ENOMEM;
+ }
- blk_queue_make_request(blk_dev->queue, nd_blk_make_request);
- blk_queue_max_hw_sectors(blk_dev->queue, UINT_MAX);
- blk_queue_bounce_limit(blk_dev->queue, BLK_BOUNCE_ANY);
- blk_queue_logical_block_size(blk_dev->queue, blk_dev->sector_size);
- queue_flag_set_unlocked(QUEUE_FLAG_NONROT, blk_dev->queue);
+ blk_queue_make_request(q, nd_blk_make_request);
+ blk_queue_max_hw_sectors(q, UINT_MAX);
+ blk_queue_bounce_limit(q, BLK_BOUNCE_ANY);
+ blk_queue_logical_block_size(q, nsblk_sector_size(nsblk));
+ queue_flag_set_unlocked(QUEUE_FLAG_NONROT, q);
+ q->queuedata = nsblk;
- disk = blk_dev->disk = alloc_disk(0);
- if (!disk) {
- blk_cleanup_queue(blk_dev->queue);
+ disk = alloc_disk(0);
+ if (!disk)
+ return -ENOMEM;
+ if (devm_add_action(dev, nd_blk_release_disk, disk)) {
+ put_disk(disk);
return -ENOMEM;
}
- disk->driverfs_dev = &ndns->dev;
+ disk->driverfs_dev = dev;
disk->first_minor = 0;
disk->fops = &nd_blk_fops;
- disk->private_data = blk_dev;
- disk->queue = blk_dev->queue;
+ disk->queue = q;
disk->flags = GENHD_FL_EXT_DEVT;
- nvdimm_namespace_disk_name(ndns, disk->disk_name);
+ nvdimm_namespace_disk_name(&nsblk->common, disk->disk_name);
set_capacity(disk, 0);
add_disk(disk);
- if (nd_blk_meta_size(blk_dev)) {
- int rc = nd_integrity_init(disk, nd_blk_meta_size(blk_dev));
+ if (nsblk_meta_size(nsblk)) {
+ int rc = nd_integrity_init(disk, nsblk_meta_size(nsblk));
- if (rc) {
- del_gendisk(disk);
- put_disk(disk);
- blk_cleanup_queue(blk_dev->queue);
+ if (rc)
return rc;
- }
}
set_capacity(disk, available_disk_size >> SECTOR_SHIFT);
{
struct nd_namespace_common *ndns;
struct nd_namespace_blk *nsblk;
- struct nd_blk_device *blk_dev;
- int rc;
ndns = nvdimm_namespace_common_probe(dev);
if (IS_ERR(ndns))
return PTR_ERR(ndns);
- blk_dev = kzalloc(sizeof(*blk_dev), GFP_KERNEL);
- if (!blk_dev)
- return -ENOMEM;
-
nsblk = to_nd_namespace_blk(&ndns->dev);
- blk_dev->disk_size = nvdimm_namespace_capacity(ndns);
- blk_dev->ndbr = to_nd_blk_region(dev->parent);
- blk_dev->nsblk = to_nd_namespace_blk(&ndns->dev);
- blk_dev->internal_lbasize = roundup(nsblk->lbasize,
- INT_LBASIZE_ALIGNMENT);
- blk_dev->sector_size = ((nsblk->lbasize >= 4096) ? 4096 : 512);
- dev_set_drvdata(dev, blk_dev);
-
- ndns->rw_bytes = nd_blk_rw_bytes;
+ nsblk->size = nvdimm_namespace_capacity(ndns);
+ dev_set_drvdata(dev, nsblk);
+
+ ndns->rw_bytes = nsblk_rw_bytes;
if (is_nd_btt(dev))
- rc = nvdimm_namespace_attach_btt(ndns);
- else if (nd_btt_probe(ndns, blk_dev) == 0) {
+ return nvdimm_namespace_attach_btt(ndns);
+ else if (nd_btt_probe(dev, ndns) == 0) {
/* we'll come back as btt-blk */
- rc = -ENXIO;
+ return -ENXIO;
} else
- rc = nd_blk_attach_disk(ndns, blk_dev);
- if (rc)
- kfree(blk_dev);
- return rc;
-}
-
-static void nd_blk_detach_disk(struct nd_blk_device *blk_dev)
-{
- del_gendisk(blk_dev->disk);
- put_disk(blk_dev->disk);
- blk_cleanup_queue(blk_dev->queue);
+ return nsblk_attach_disk(nsblk);
}
static int nd_blk_remove(struct device *dev)
{
- struct nd_blk_device *blk_dev = dev_get_drvdata(dev);
-
if (is_nd_btt(dev))
- nvdimm_namespace_detach_btt(to_nd_btt(dev)->ndns);
- else
- nd_blk_detach_disk(blk_dev);
- kfree(blk_dev);
-
+ nvdimm_namespace_detach_btt(to_nd_btt(dev));
return 0;
}
projects / cascardo / linux.git / blobdiff