diff options
Diffstat (limited to 'gxp-dma.h')
| -rw-r--r-- | gxp-dma.h | 26 |
1 files changed, 26 insertions, 0 deletions
@@ -10,6 +10,9 @@ #include <linux/dma-direction.h> #include <linux/dma-mapping.h> #include <linux/types.h> +#ifdef CONFIG_ANDROID +#include <soc/google/tpu-ext.h> +#endif #include "gxp-internal.h" @@ -74,6 +77,29 @@ int gxp_dma_map_resources(struct gxp_dev *gxp); */ void gxp_dma_unmap_resources(struct gxp_dev *gxp); +#ifdef CONFIG_ANDROID +/** + * gxp_dma_map_tpu_buffer() - Map the tpu mbx queue buffers with fixed IOVAs + * @gxp: The GXP device to setup the mappings for + * @core_list: A bitfield enumerating the physical cores the mapping is for + * @mbx_info: Structure holding TPU-DSP mailbox queue buffer information + * + * Return: + * * 0 - Mappings created successfully + * * -EIO - Failed to create the mappings + */ +int gxp_dma_map_tpu_buffer(struct gxp_dev *gxp, uint core_list, + struct edgetpu_ext_mailbox_info *mbx_info); + +/** + * gxp_dma_unmap_tpu_buffer() - Unmap IOVAs mapped by gxp_dma_map_tpu_buffer() + * @gxp: The GXP device that was passed to gxp_dma_map_tpu_buffer() + * @mbx_desc: Structure holding info for already mapped TPU-DSP mailboxes. + */ +void gxp_dma_unmap_tpu_buffer(struct gxp_dev *gxp, + struct gxp_tpu_mbx_desc mbx_desc); +#endif // CONFIG_ANDROID + /** * gxp_dma_alloc_coherent() - Allocate and map a coherent buffer for a GXP core * @gxp: The GXP device to map the allocated buffer for |