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| author | Srinivas Kandagatla <srinivas.kandagatla@linaro.org> | 2019-02-08 17:11:27 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-02-12 10:40:30 +0100 |
| commit | 6cffd79504ce040f460831030d3069fa1c99bb71 (patch) | |
| tree | 39c7bc03d20f5efc6f1ad47844dc9683ee46c0d8 /include/uapi/misc | |
| parent | d73f71c7c6ee1583c08c214c8f7b20d841490b36 (diff) | |
| download | linux-6cffd79504ce040f460831030d3069fa1c99bb71.tar.gz linux-6cffd79504ce040f460831030d3069fa1c99bb71.tar.bz2 linux-6cffd79504ce040f460831030d3069fa1c99bb71.zip | |
misc: fastrpc: Add support for dmabuf exporter
User process can involve dealing with big buffer sizes, and also passing
buffers from one compute context bank to other compute context bank for
complex dsp algorithms.
This patch adds support to fastrpc to make it a proper dmabuf exporter
to avoid making copies of buffers.
Co-developed-by: Thierry Escande <thierry.escande@linaro.org>
Signed-off-by: Thierry Escande <thierry.escande@linaro.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/uapi/misc')
| -rw-r--r-- | include/uapi/misc/fastrpc.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/uapi/misc/fastrpc.h b/include/uapi/misc/fastrpc.h index 32d191c3b7bc..6d701af9fc42 100644 --- a/include/uapi/misc/fastrpc.h +++ b/include/uapi/misc/fastrpc.h @@ -5,6 +5,8 @@ #include <linux/types.h> +#define FASTRPC_IOCTL_ALLOC_DMA_BUFF _IOWR('R', 1, struct fastrpc_alloc_dma_buf) +#define FASTRPC_IOCTL_FREE_DMA_BUFF _IOWR('R', 2, __u32) #define FASTRPC_IOCTL_INVOKE _IOWR('R', 3, struct fastrpc_invoke) #define FASTRPC_IOCTL_INIT_ATTACH _IO('R', 4) #define FASTRPC_IOCTL_INIT_CREATE _IOWR('R', 5, struct fastrpc_init_create) @@ -30,4 +32,10 @@ struct fastrpc_init_create { __u64 file; /* pointer to elf file */ }; +struct fastrpc_alloc_dma_buf { + __s32 fd; /* fd */ + __u32 flags; /* flags to map with */ + __u64 size; /* size */ +}; + #endif /* __QCOM_FASTRPC_H__ */ |