From 804f7d63f26c00a64e2945fced4841abf200c0c0 Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Mon, 14 Aug 2023 01:46:47 +0200 Subject: disk: Move part_create_block_devices() to blk uclass Move part_create_block_devices() to blk uclass and unexpose the function. This can now be internal to the block uclass. Signed-off-by: Marek Vasut --- include/part.h | 9 --------- 1 file changed, 9 deletions(-) (limited to 'include') diff --git a/include/part.h b/include/part.h index 8e451bbdff9..be144768777 100644 --- a/include/part.h +++ b/include/part.h @@ -315,15 +315,6 @@ part_get_info_by_dev_and_name_or_num(const char *dev_iface, int part_get_bootable(struct blk_desc *desc); struct udevice; -/** - * part_create_block_devices - Create block devices for disk partitions - * - * Create UCLASS_PARTITION udevices for each of disk partitions in @parent - * - * @blk_dev: Whole disk device - */ -int part_create_block_devices(struct udevice *blk_dev); - /** * disk_blk_read() - read blocks from a disk partition * -- cgit v1.3.1 From 7f0fba9fb08fb7d31060848c719ffad3739e9d58 Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Mon, 14 Aug 2023 01:46:48 +0200 Subject: disk: Make blk_get_ops() internal to blk uclass Move the macro into blk-uclass.c , since it is only used there. Signed-off-by: Marek Vasut Reviewed-by: Simon Glass --- drivers/block/blk-uclass.c | 2 ++ include/blk.h | 2 -- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/drivers/block/blk-uclass.c b/drivers/block/blk-uclass.c index 9521b3eb878..6aac92d9962 100644 --- a/drivers/block/blk-uclass.c +++ b/drivers/block/blk-uclass.c @@ -17,6 +17,8 @@ #include #include +#define blk_get_ops(dev) ((struct blk_ops *)(dev)->driver->ops) + static struct { enum uclass_id id; const char *name; diff --git a/include/blk.h b/include/blk.h index 2c9c7985a88..8986e953e5a 100644 --- a/include/blk.h +++ b/include/blk.h @@ -262,8 +262,6 @@ struct blk_ops { int (*select_hwpart)(struct udevice *dev, int hwpart); }; -#define blk_get_ops(dev) ((struct blk_ops *)(dev)->driver->ops) - /* * These functions should take struct udevice instead of struct blk_desc, * but this is convenient for migration to driver model. Add a 'd' prefix -- cgit v1.3.1 From 75191f75bce45f3b9aff607c88f17778d3805c61 Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Mon, 14 Aug 2023 01:49:59 +0200 Subject: blk: Add bounce buffer support to read/write operations Some devices have limited DMA capabilities and require that the buffers passed to them fit specific properties. Add new optional callback which can be used at driver level to indicate whether a buffer alignment is suitable for the device DMA or not, and trigger use of generic bounce buffer implementation to help use of unsuitable buffers at the expense of performance degradation. Signed-off-by: Marek Vasut --- drivers/block/blk-uclass.c | 62 ++++++++++++++++++++++++++++++++++++++++++++-- include/blk.h | 19 ++++++++++++++ 2 files changed, 79 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/drivers/block/blk-uclass.c b/drivers/block/blk-uclass.c index 6aac92d9962..885513893f6 100644 --- a/drivers/block/blk-uclass.c +++ b/drivers/block/blk-uclass.c @@ -446,6 +446,26 @@ int blk_get_device(int uclass_id, int devnum, struct udevice **devp) return device_probe(*devp); } +struct blk_bounce_buffer { + struct udevice *dev; + struct bounce_buffer state; +}; + +static int blk_buffer_aligned(struct bounce_buffer *state) +{ +#if IS_ENABLED(CONFIG_BOUNCE_BUFFER) + struct blk_bounce_buffer *bbstate = + container_of(state, struct blk_bounce_buffer, state); + struct udevice *dev = bbstate->dev; + const struct blk_ops *ops = blk_get_ops(dev); + + if (ops->buffer_aligned) + return ops->buffer_aligned(dev, state); +#endif /* CONFIG_BOUNCE_BUFFER */ + + return 1; /* Default, any buffer is OK */ +} + long blk_read(struct udevice *dev, lbaint_t start, lbaint_t blkcnt, void *buf) { struct blk_desc *desc = dev_get_uclass_plat(dev); @@ -458,7 +478,25 @@ long blk_read(struct udevice *dev, lbaint_t start, lbaint_t blkcnt, void *buf) if (blkcache_read(desc->uclass_id, desc->devnum, start, blkcnt, desc->blksz, buf)) return blkcnt; - blks_read = ops->read(dev, start, blkcnt, buf); + + if (IS_ENABLED(CONFIG_BOUNCE_BUFFER)) { + struct blk_bounce_buffer bbstate = { .dev = dev }; + int ret; + + ret = bounce_buffer_start_extalign(&bbstate.state, buf, + blkcnt * desc->blksz, + GEN_BB_WRITE, desc->blksz, + blk_buffer_aligned); + if (ret) + return ret; + + blks_read = ops->read(dev, start, blkcnt, bbstate.state.bounce_buffer); + + bounce_buffer_stop(&bbstate.state); + } else { + blks_read = ops->read(dev, start, blkcnt, buf); + } + if (blks_read == blkcnt) blkcache_fill(desc->uclass_id, desc->devnum, start, blkcnt, desc->blksz, buf); @@ -471,13 +509,33 @@ long blk_write(struct udevice *dev, lbaint_t start, lbaint_t blkcnt, { struct blk_desc *desc = dev_get_uclass_plat(dev); const struct blk_ops *ops = blk_get_ops(dev); + long blks_written; if (!ops->write) return -ENOSYS; blkcache_invalidate(desc->uclass_id, desc->devnum); - return ops->write(dev, start, blkcnt, buf); + if (IS_ENABLED(CONFIG_BOUNCE_BUFFER)) { + struct blk_bounce_buffer bbstate = { .dev = dev }; + int ret; + + ret = bounce_buffer_start_extalign(&bbstate.state, (void *)buf, + blkcnt * desc->blksz, + GEN_BB_READ, desc->blksz, + blk_buffer_aligned); + if (ret) + return ret; + + blks_written = ops->write(dev, start, blkcnt, + bbstate.state.bounce_buffer); + + bounce_buffer_stop(&bbstate.state); + } else { + blks_written = ops->write(dev, start, blkcnt, buf); + } + + return blks_written; } long blk_erase(struct udevice *dev, lbaint_t start, lbaint_t blkcnt) diff --git a/include/blk.h b/include/blk.h index 8986e953e5a..b819f97c2f1 100644 --- a/include/blk.h +++ b/include/blk.h @@ -7,6 +7,7 @@ #ifndef BLK_H #define BLK_H +#include #include #include @@ -260,6 +261,24 @@ struct blk_ops { * @return 0 if OK, -ve on error */ int (*select_hwpart)(struct udevice *dev, int hwpart); + +#if IS_ENABLED(CONFIG_BOUNCE_BUFFER) + /** + * buffer_aligned() - test memory alignment of block operation buffer + * + * Some devices have limited DMA capabilities and require that the + * buffers passed to them fit specific properties. This optional + * callback can be used to indicate whether a buffer alignment is + * suitable for the device DMA or not, and trigger use of generic + * bounce buffer implementation to help use of unsuitable buffers + * at the expense of performance degradation. + * + * @dev: Block device associated with the request + * @state: Bounce buffer state + * @return 1 if OK, 0 if unaligned + */ + int (*buffer_aligned)(struct udevice *dev, struct bounce_buffer *state); +#endif /* CONFIG_BOUNCE_BUFFER */ }; /* -- cgit v1.3.1 From 4f543e82b9831333bc0effe9540d8e6a9dde3cb5 Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Mon, 14 Aug 2023 01:50:00 +0200 Subject: scsi: Add buffer_aligned check pass-through Some devices have limited DMA capabilities and require that the buffers passed to them fit specific properties. Add new optional callback which can be used at driver level to indicate whether a buffer alignment is suitable for the device DMA or not. This is a pass-through callback from block uclass to drivers. Signed-off-by: Marek Vasut --- drivers/scsi/scsi.c | 15 +++++++++++++++ include/scsi.h | 19 +++++++++++++++++++ 2 files changed, 34 insertions(+) (limited to 'include') diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c index 6498f998ad6..7411660d465 100644 --- a/drivers/scsi/scsi.c +++ b/drivers/scsi/scsi.c @@ -274,6 +274,18 @@ static ulong scsi_write(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt, __func__, start, smallblks, buf_addr); return blkcnt; } + +#if IS_ENABLED(CONFIG_BOUNCE_BUFFER) +static int scsi_buffer_aligned(struct udevice *dev, struct bounce_buffer *state) +{ + struct scsi_ops *ops = scsi_get_ops(dev->parent); + + if (ops->buffer_aligned) + return ops->buffer_aligned(dev->parent, state); + + return 1; +} +#endif /* CONFIG_BOUNCE_BUFFER */ #endif #if defined(CONFIG_PCI) && !defined(CONFIG_SCSI_AHCI_PLAT) && \ @@ -720,6 +732,9 @@ int scsi_scan(bool verbose) static const struct blk_ops scsi_blk_ops = { .read = scsi_read, .write = scsi_write, +#if IS_ENABLED(CONFIG_BOUNCE_BUFFER) + .buffer_aligned = scsi_buffer_aligned, +#endif /* CONFIG_BOUNCE_BUFFER */ }; U_BOOT_DRIVER(scsi_blk) = { diff --git a/include/scsi.h b/include/scsi.h index 9efefea99bb..ee9d622680d 100644 --- a/include/scsi.h +++ b/include/scsi.h @@ -7,6 +7,7 @@ #define _SCSI_H #include +#include #include /* Fix this to the maximum */ @@ -298,6 +299,24 @@ struct scsi_ops { * @return 0 if OK, -ve on error */ int (*bus_reset)(struct udevice *dev); + +#if IS_ENABLED(CONFIG_BOUNCE_BUFFER) + /** + * buffer_aligned() - test memory alignment of block operation buffer + * + * Some devices have limited DMA capabilities and require that the + * buffers passed to them fit specific properties. This optional + * callback can be used to indicate whether a buffer alignment is + * suitable for the device DMA or not, and trigger use of generic + * bounce buffer implementation to help use of unsuitable buffers + * at the expense of performance degradation. + * + * @dev: Block device associated with the request + * @state: Bounce buffer state + * @return 1 if OK, 0 if unaligned + */ + int (*buffer_aligned)(struct udevice *dev, struct bounce_buffer *state); +#endif /* CONFIG_BOUNCE_BUFFER */ }; #define scsi_get_ops(dev) ((struct scsi_ops *)(dev)->driver->ops) -- cgit v1.3.1