In certain situations it's useful to be able to write to an offset of the mapping. Add a dst_offset to iosys_map_memcpy_to().
Showing the changes to include (1 of 3 files). Show all
Unified · Split
| @@ -220,22 +220,23 @@ static inline void iosys_map_clear(struct iosys_map *map) · 219 unmodified lines | ||
| 220 | 220 | } |
| 221 | 221 | |
| 222 | 222 | /** |
| 223 | − * iosys_map_memcpy_to - Memcpy into iosys mapping | |
| 223 | + * iosys_map_memcpy_to - Memcpy into offset of iosys_map | |
| 224 | 224 | * @dst: The iosys_map structure |
| 225 | + * @dst_offset: The offset from which to copy | |
| 225 | 226 | * @src: The source buffer |
| 226 | 227 | * @len: The number of byte in src |
| 227 | 228 | * |
| 228 | − * Copies data into a iosys mapping. The source buffer is in system | |
| 229 | − * memory. Depending on the buffer's location, the helper picks the correct | |
| 230 | − * method of accessing the memory. | |
| 229 | + * Copies data into a iosys_map with an offset. The source buffer is in | |
| 230 | + * system memory. Depending on the buffer's location, the helper picks the | |
| 231 | + * correct method of accessing the memory. | |
| 231 | 232 | */ |
| 232 | −static inline void iosys_map_memcpy_to(struct iosys_map *dst, const void *src, | |
| 233 | − size_t len) | |
| 233 | +static inline void iosys_map_memcpy_to(struct iosys_map *dst, size_t dst_offset, | |
| 234 | + const void *src, size_t len) | |
| 234 | 235 | { |
| 235 | 236 | if (dst->is_iomem) |
| 236 | − memcpy_toio(dst->vaddr_iomem, src, len); | |
| 237 | + memcpy_toio(dst->vaddr_iomem + dst_offset, src, len); | |
| 237 | 238 | else |
| 238 | − memcpy(dst->vaddr, src, len); | |
| 239 | + memcpy(dst->vaddr + dst_offset, src, len); | |
| 239 | 240 | } |
| 240 | 241 | |
| 241 | 242 | /** |