diff options
Diffstat (limited to 'include/uapi/misc')
| -rw-r--r-- | include/uapi/misc/fastrpc.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/include/uapi/misc/fastrpc.h b/include/uapi/misc/fastrpc.h index c6e2925f47e6..ba1ea5ed426c 100644 --- a/include/uapi/misc/fastrpc.h +++ b/include/uapi/misc/fastrpc.h @@ -16,6 +16,7 @@ #define FASTRPC_IOCTL_INIT_CREATE_STATIC _IOWR('R', 9, struct fastrpc_init_create_static) #define FASTRPC_IOCTL_MEM_MAP _IOWR('R', 10, struct fastrpc_mem_map) #define FASTRPC_IOCTL_MEM_UNMAP _IOWR('R', 11, struct fastrpc_mem_unmap) +#define FASTRPC_IOCTL_SET_OPTION _IOWR('R', 12, struct fastrpc_ioctl_set_option) #define FASTRPC_IOCTL_GET_DSP_INFO _IOWR('R', 13, struct fastrpc_ioctl_capability) /** @@ -67,6 +68,28 @@ enum fastrpc_proc_attr { /* Fastrpc attribute for memory protection of buffers */ #define FASTRPC_ATTR_SECUREMAP (1) +/** + * FASTRPC_POLL_MODE - Enable/disable poll mode for FastRPC invocations + * + * Poll mode is an optimization that allows the CPU to poll shared memory + * for completion instead of waiting for an interrupt-based response. + * This reduces latency for fast-completing operations. + * + * Restrictions: + * - Only supported for USER_PD (User Protection Domain) + * - Only applies to dynamic modules (handle > 20) + * - Static modules always use interrupt-based completion + * + * Values: + * - 0: Disable poll mode (use interrupt-based completion) + * - 1: Enable poll mode (poll shared memory for completion) + */ +#define FASTRPC_POLL_MODE (1) + +/* Values for FASTRPC_POLL_MODE request */ +#define FASTRPC_POLL_MODE_DISABLE 0 +#define FASTRPC_POLL_MODE_ENABLE 1 + struct fastrpc_invoke_args { __u64 ptr; __u64 length; @@ -133,6 +156,12 @@ struct fastrpc_mem_unmap { __s32 reserved[5]; }; +struct fastrpc_ioctl_set_option { + __u32 request_id; /* Request type (e.g., FASTRPC_POLL_MODE) */ + __u32 value; /* Request-specific value */ + __s32 reserved[6]; +}; + struct fastrpc_ioctl_capability { __u32 unused; /* deprecated, ignored by the kernel */ __u32 attribute_id; |