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rockchip: block: blk-uclass: add bounce buffer flag to blk_desc

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Currently bounce buffer support is enabled for all block devices
when available. Add a flag to blk_desc to enable only on demand.

Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
This commit is contained in:
Johan Jonker 2023-10-18 16:01:10 +02:00 committed by Kever Yang
parent 80201eccaa
commit 81bd22e935
3 changed files with 7 additions and 2 deletions
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4
drivers/block/blk-uclass.c
View File

@ -441,7 +441,7 @@ long blk_read(struct udevice *dev, lbaint_t start, lbaint_t blkcnt, void *buf)
start, blkcnt, desc->blksz, buf))
return blkcnt;
if (IS_ENABLED(CONFIG_BOUNCE_BUFFER)) {
if (IS_ENABLED(CONFIG_BOUNCE_BUFFER) && desc->bb) {
struct blk_bounce_buffer bbstate = { .dev = dev };
int ret;
@ -478,7 +478,7 @@ long blk_write(struct udevice *dev, lbaint_t start, lbaint_t blkcnt,
blkcache_invalidate(desc->uclass_id, desc->devnum);
if (IS_ENABLED(CONFIG_BOUNCE_BUFFER)) {
if (IS_ENABLED(CONFIG_BOUNCE_BUFFER) && desc->bb) {
struct blk_bounce_buffer bbstate = { .dev = dev };
int ret;

4
drivers/scsi/scsi.c
View File

@ -459,6 +459,9 @@ static void scsi_init_dev_desc_priv(struct blk_desc *dev_desc)
dev_desc->product[0] = 0;
dev_desc->revision[0] = 0;
dev_desc->removable = false;
#if IS_ENABLED(CONFIG_BOUNCE_BUFFER)
dev_desc->bb = true;
#endif /* CONFIG_BOUNCE_BUFFER */
}
#if !defined(CONFIG_DM_SCSI)
@ -606,6 +609,7 @@ static int do_scsi_scan_one(struct udevice *dev, int id, int lun, bool verbose)
bdesc->lun = lun;
bdesc->removable = bd.removable;
bdesc->type = bd.type;
bdesc->bb = bd.bb;
memcpy(&bdesc->vendor, &bd.vendor, sizeof(bd.vendor));
memcpy(&bdesc->product, &bd.product, sizeof(bd.product));
memcpy(&bdesc->revision, &bd.revision, sizeof(bd.revision));

1
include/blk.h
View File

@ -68,6 +68,7 @@ struct blk_desc {
/* device can use 48bit addr (ATA/ATAPI v7) */
bool lba48;
unsigned char atapi; /* Use ATAPI protocol */
unsigned char bb; /* Use bounce buffer */
lbaint_t lba; /* number of blocks */
unsigned long blksz; /* block size */
int log2blksz; /* for convenience: log2(blksz) */