gpudev: add memory barrier

[dpdk.git] / lib / gpudev / gpudev_driver.h

diff --git a/lib/gpudev/gpudev_driver.h b/lib/gpudev/gpudev_driver.h
index 2a7089a..cb7b101 100644 (file)
--- a/lib/gpudev/gpudev_driver.h
+++ b/lib/gpudev/gpudev_driver.h
@@ -27,27 +27,51 @@ enum rte_gpu_state {
 struct rte_gpu;
 typedef int (rte_gpu_close_t)(struct rte_gpu *dev);
 typedef int (rte_gpu_info_get_t)(struct rte_gpu *dev, struct rte_gpu_info *info);
+typedef int (rte_gpu_mem_alloc_t)(struct rte_gpu *dev, size_t size, void **ptr);
+typedef int (rte_gpu_mem_free_t)(struct rte_gpu *dev, void *ptr);
+typedef int (rte_gpu_mem_register_t)(struct rte_gpu *dev, size_t size, void *ptr);
+typedef int (rte_gpu_mem_unregister_t)(struct rte_gpu *dev, void *ptr);
+typedef int (rte_gpu_wmb_t)(struct rte_gpu *dev);
 
 struct rte_gpu_ops {
        /* Get device info. If NULL, info is just copied. */
        rte_gpu_info_get_t *dev_info_get;
-       /* Close device. */
+       /* Close device or child context. */
        rte_gpu_close_t *dev_close;
+       /* Allocate memory in device. */
+       rte_gpu_mem_alloc_t *mem_alloc;
+       /* Free memory allocated in device. */
+       rte_gpu_mem_free_t *mem_free;
+       /* Register CPU memory in device. */
+       rte_gpu_mem_register_t *mem_register;
+       /* Unregister CPU memory from device. */
+       rte_gpu_mem_unregister_t *mem_unregister;
+       /* Enforce GPU write memory barrier. */
+       rte_gpu_wmb_t *wmb;
 };
 
-struct rte_gpu {
-       /* Backing device. */
-       struct rte_device *device;
+struct rte_gpu_mpshared {
        /* Unique identifier name. */
        char name[RTE_DEV_NAME_MAX_LEN]; /* Updated by this library. */
+       /* Driver-specific private data shared in multi-process. */
+       void *dev_private;
        /* Device info structure. */
        struct rte_gpu_info info;
+       /* Counter of processes using the device. */
+       uint16_t process_refcnt; /* Updated by this library. */
+};
+
+struct rte_gpu {
+       /* Backing device. */
+       struct rte_device *device;
+       /* Data shared between processes. */
+       struct rte_gpu_mpshared *mpshared;
        /* Driver functions. */
        struct rte_gpu_ops ops;
        /* Event callback list. */
        TAILQ_HEAD(rte_gpu_callback_list, rte_gpu_callback) callbacks;
        /* Current state (used or not) in the running process. */
-       enum rte_gpu_state state; /* Updated by this library. */
+       enum rte_gpu_state process_state; /* Updated by this library. */
        /* Driver-specific private data for the running process. */
        void *process_private;
 } __rte_cache_aligned;
@@ -55,15 +79,19 @@ struct rte_gpu {
 __rte_internal
 struct rte_gpu *rte_gpu_get_by_name(const char *name);
 
-/* First step of initialization */
+/* First step of initialization in primary process. */
 __rte_internal
 struct rte_gpu *rte_gpu_allocate(const char *name);
 
+/* First step of initialization in secondary process. */
+__rte_internal
+struct rte_gpu *rte_gpu_attach(const char *name);
+
 /* Last step of initialization. */
 __rte_internal
 void rte_gpu_complete_new(struct rte_gpu *dev);
 
-/* Last step of removal. */
+/* Last step of removal (primary or secondary process). */
 __rte_internal
 int rte_gpu_release(struct rte_gpu *dev);