diff options
Diffstat (limited to 'drivers/misc/genwqe/card_base.h')
| -rw-r--r-- | drivers/misc/genwqe/card_base.h | 58 |
1 files changed, 39 insertions, 19 deletions
diff --git a/drivers/misc/genwqe/card_base.h b/drivers/misc/genwqe/card_base.h index 5e4dbd21f89a..0e608a288603 100644 --- a/drivers/misc/genwqe/card_base.h +++ b/drivers/misc/genwqe/card_base.h @@ -337,6 +337,44 @@ enum genwqe_requ_state { }; /** + * struct genwqe_sgl - Scatter gather list describing user-space memory + * @sgl: scatter gather list needs to be 128 byte aligned + * @sgl_dma_addr: dma address of sgl + * @sgl_size: size of area used for sgl + * @user_addr: user-space address of memory area + * @user_size: size of user-space memory area + * @page: buffer for partial pages if needed + * @page_dma_addr: dma address partial pages + */ +struct genwqe_sgl { + dma_addr_t sgl_dma_addr; + struct sg_entry *sgl; + size_t sgl_size; /* size of sgl */ + + void __user *user_addr; /* user-space base-address */ + size_t user_size; /* size of memory area */ + + unsigned long nr_pages; + unsigned long fpage_offs; + size_t fpage_size; + size_t lpage_size; + + void *fpage; + dma_addr_t fpage_dma_addr; + + void *lpage; + dma_addr_t lpage_dma_addr; +}; + +int genwqe_alloc_sync_sgl(struct genwqe_dev *cd, struct genwqe_sgl *sgl, + void __user *user_addr, size_t user_size); + +int genwqe_setup_sgl(struct genwqe_dev *cd, struct genwqe_sgl *sgl, + dma_addr_t *dma_list); + +int genwqe_free_sync_sgl(struct genwqe_dev *cd, struct genwqe_sgl *sgl); + +/** * struct ddcb_requ - Kernel internal representation of the DDCB request * @cmd: User space representation of the DDCB execution request */ @@ -347,9 +385,7 @@ struct ddcb_requ { struct ddcb_queue *queue; /* associated queue */ struct dma_mapping dma_mappings[DDCB_FIXUPS]; - struct sg_entry *sgl[DDCB_FIXUPS]; - dma_addr_t sgl_dma_addr[DDCB_FIXUPS]; - size_t sgl_size[DDCB_FIXUPS]; + struct genwqe_sgl sgls[DDCB_FIXUPS]; /* kernel/user shared content */ struct genwqe_ddcb_cmd cmd; /* ddcb_no for this request */ @@ -453,22 +489,6 @@ int genwqe_user_vmap(struct genwqe_dev *cd, struct dma_mapping *m, int genwqe_user_vunmap(struct genwqe_dev *cd, struct dma_mapping *m, struct ddcb_requ *req); -struct sg_entry *genwqe_alloc_sgl(struct genwqe_dev *cd, int num_pages, - dma_addr_t *dma_addr, size_t *sgl_size); - -void genwqe_free_sgl(struct genwqe_dev *cd, struct sg_entry *sg_list, - dma_addr_t dma_addr, size_t size); - -int genwqe_setup_sgl(struct genwqe_dev *cd, - unsigned long offs, - unsigned long size, - struct sg_entry *sgl, /* genwqe sgl */ - dma_addr_t dma_addr, size_t sgl_size, - dma_addr_t *dma_list, int page_offs, int num_pages); - -int genwqe_check_sgl(struct genwqe_dev *cd, struct sg_entry *sg_list, - int size); - static inline bool dma_mapping_used(struct dma_mapping *m) { if (!m) |