From 442e75071bae1cc822d1a490f5012c63e8e646df Mon Sep 17 00:00:00 2001 From: Chia-I Wu Date: Tue, 9 Apr 2019 20:16:00 +0000 Subject: [PATCH] virgl: introduce virgl_drm_fence virgl_drm_fence can wrap either a fence fd or a virgl_hw_res. Because a fence fd is cheaper than a virgl_hw_res, we use it whenever it is available. Signed-off-by: Chia-I Wu Reviewed-by: Emil Velikov --- src/gallium/winsys/virgl/drm/virgl_drm_winsys.c | 140 +++++++++++++++++------- src/gallium/winsys/virgl/drm/virgl_drm_winsys.h | 20 ++-- 2 files changed, 115 insertions(+), 45 deletions(-) diff --git a/src/gallium/winsys/virgl/drm/virgl_drm_winsys.c b/src/gallium/winsys/virgl/drm/virgl_drm_winsys.c index 2cd4bf7..e78c085 100644 --- a/src/gallium/winsys/virgl/drm/virgl_drm_winsys.c +++ b/src/gallium/winsys/virgl/drm/virgl_drm_winsys.c @@ -23,6 +23,7 @@ #include #include +#include #include #include #include @@ -76,9 +77,6 @@ static void virgl_hw_res_destroy(struct virgl_drm_winsys *qdws, if (res->ptr) os_munmap(res->ptr, res->size); - if (res->fence_fd != -1) - close(res->fence_fd); - memset(&args, 0, sizeof(args)); args.handle = res->bo_handle; drmIoctl(qdws->fd, DRM_IOCTL_GEM_CLOSE, &args); @@ -231,7 +229,6 @@ virgl_drm_winsys_resource_create(struct virgl_winsys *qws, res->stride = stride; pipe_reference_init(&res->reference, 1); p_atomic_set(&res->num_cs_references, 0); - res->fence_fd = -1; return res; } @@ -467,7 +464,6 @@ virgl_drm_winsys_resource_create_handle(struct virgl_winsys *qws, res->stride = info_arg.stride; pipe_reference_init(&res->reference, 1); res->num_cs_references = 0; - res->fence_fd = -1; util_hash_table_set(qdws->bo_handles, (void *)(uintptr_t)handle, res); @@ -710,18 +706,54 @@ static void virgl_drm_cmd_buf_destroy(struct virgl_cmd_buf *_cbuf) } static struct pipe_fence_handle * -virgl_drm_fence_create(struct virgl_winsys *vws, int fd) +virgl_drm_fence_create(struct virgl_winsys *vws, int fd, bool external) { - struct virgl_hw_res *res; + struct virgl_drm_fence *fence; + + assert(vws->supports_fences); + + if (external) { + fd = dup(fd); + if (fd < 0) + return NULL; + } + + fence = CALLOC_STRUCT(virgl_drm_fence); + if (!fence) { + close(fd); + return NULL; + } + + fence->fd = fd; + fence->external = external; + + pipe_reference_init(&fence->reference, 1); + + return (struct pipe_fence_handle *)fence; +} + +static struct pipe_fence_handle * +virgl_drm_fence_create_legacy(struct virgl_winsys *vws) +{ + struct virgl_drm_fence *fence; + + assert(!vws->supports_fences); + + fence = CALLOC_STRUCT(virgl_drm_fence); + if (!fence) + return NULL; + fence->fd = -1; + + fence->hw_res = virgl_drm_winsys_resource_cache_create(vws, PIPE_BUFFER, + PIPE_FORMAT_R8_UNORM, VIRGL_BIND_CUSTOM, 8, 1, 1, 0, 0, 0, 8); + if (!fence->hw_res) { + FREE(fence); + return NULL; + } - res = virgl_drm_winsys_resource_cache_create(vws, - PIPE_BUFFER, - PIPE_FORMAT_R8_UNORM, - VIRGL_BIND_CUSTOM, - 8, 1, 1, 0, 0, 0, 8); + pipe_reference_init(&fence->reference, 1); - res->fence_fd = fd; - return (struct pipe_fence_handle *)res; + return (struct pipe_fence_handle *)fence; } static int virgl_drm_winsys_submit_cmd(struct virgl_winsys *qws, @@ -767,10 +799,10 @@ static int virgl_drm_winsys_submit_cmd(struct virgl_winsys *qws, } if (fence != NULL && ret == 0) - *fence = virgl_drm_fence_create(qws, eb.fence_fd); + *fence = virgl_drm_fence_create(qws, eb.fence_fd, false); } else { if (fence != NULL && ret == 0) - *fence = virgl_drm_fence_create(qws, -1); + *fence = virgl_drm_fence_create_legacy(qws); } virgl_drm_release_all_res(qdws, cbuf); @@ -826,35 +858,50 @@ static int handle_compare(void *key1, void *key2) static struct pipe_fence_handle * virgl_cs_create_fence(struct virgl_winsys *vws, int fd) { - return virgl_drm_fence_create(vws, fd); + if (!vws->supports_fences) + return NULL; + + return virgl_drm_fence_create(vws, fd, true); } static bool virgl_fence_wait(struct virgl_winsys *vws, - struct pipe_fence_handle *fence, + struct pipe_fence_handle *_fence, uint64_t timeout) { struct virgl_drm_winsys *vdws = virgl_drm_winsys(vws); - struct virgl_hw_res *res = virgl_hw_res(fence); + struct virgl_drm_fence *fence = virgl_drm_fence(_fence); + + if (vws->supports_fences) { + uint64_t timeout_ms; + int timeout_poll; + + if (timeout == 0) + return sync_wait(fence->fd, 0) == 0; + + timeout_ms = timeout / 1000000; + /* round up */ + if (timeout_ms * 1000000 < timeout) + timeout_ms++; + + timeout_poll = timeout_ms <= INT_MAX ? (int) timeout_ms : -1; + + return sync_wait(fence->fd, timeout_poll) == 0; + } if (timeout == 0) - return !virgl_drm_resource_is_busy(vdws, res); + return !virgl_drm_resource_is_busy(vdws, fence->hw_res); if (timeout != PIPE_TIMEOUT_INFINITE) { int64_t start_time = os_time_get(); timeout /= 1000; - while (virgl_drm_resource_is_busy(vdws, res)) { + while (virgl_drm_resource_is_busy(vdws, fence->hw_res)) { if (os_time_get() - start_time >= timeout) return FALSE; os_time_sleep(10); } return TRUE; } - virgl_drm_resource_wait(vws, res); - - if (res->fence_fd != -1) { - int ret = sync_wait(res->fence_fd, timeout / 1000000); - return ret == 0; - } + virgl_drm_resource_wait(vws, fence->hw_res); return TRUE; } @@ -863,31 +910,48 @@ static void virgl_fence_reference(struct virgl_winsys *vws, struct pipe_fence_handle **dst, struct pipe_fence_handle *src) { - struct virgl_drm_winsys *vdws = virgl_drm_winsys(vws); - virgl_drm_resource_reference(vdws, (struct virgl_hw_res **)dst, - virgl_hw_res(src)); + struct virgl_drm_fence *dfence = virgl_drm_fence(*dst); + struct virgl_drm_fence *sfence = virgl_drm_fence(src); + + if (pipe_reference(&dfence->reference, &sfence->reference)) { + if (vws->supports_fences) { + close(dfence->fd); + } else { + struct virgl_drm_winsys *vdws = virgl_drm_winsys(vws); + virgl_hw_res_destroy(vdws, dfence->hw_res); + } + FREE(dfence); + } + + *dst = src; } static void virgl_fence_server_sync(struct virgl_winsys *vws, - struct virgl_cmd_buf *_cbuf, - struct pipe_fence_handle *fence) + struct virgl_cmd_buf *_cbuf, + struct pipe_fence_handle *_fence) { struct virgl_drm_cmd_buf *cbuf = virgl_drm_cmd_buf(_cbuf); - struct virgl_hw_res *hw_res = virgl_hw_res(fence); + struct virgl_drm_fence *fence = virgl_drm_fence(_fence); + + if (!vws->supports_fences) + return; /* if not an external fence, then nothing more to do without preemption: */ - if (hw_res->fence_fd == -1) + if (!fence->external) return; - sync_accumulate("virgl", &cbuf->in_fence_fd, hw_res->fence_fd); + sync_accumulate("virgl", &cbuf->in_fence_fd, fence->fd); } static int virgl_fence_get_fd(struct virgl_winsys *vws, - struct pipe_fence_handle *fence) + struct pipe_fence_handle *_fence) { - struct virgl_hw_res *hw_res = virgl_hw_res(fence); + struct virgl_drm_fence *fence = virgl_drm_fence(_fence); + + if (!vws->supports_fences) + return -1; - return dup(hw_res->fence_fd); + return dup(fence->fd); } static int virgl_drm_get_version(int fd) diff --git a/src/gallium/winsys/virgl/drm/virgl_drm_winsys.h b/src/gallium/winsys/virgl/drm/virgl_drm_winsys.h index 1fbbde2..d7db03b 100644 --- a/src/gallium/winsys/virgl/drm/virgl_drm_winsys.h +++ b/src/gallium/winsys/virgl/drm/virgl_drm_winsys.h @@ -50,7 +50,6 @@ struct virgl_hw_res { int64_t start, end; boolean flinked; uint32_t flink; - int fence_fd; }; struct virgl_drm_winsys @@ -68,6 +67,13 @@ struct virgl_drm_winsys bool has_capset_query_fix; }; +struct virgl_drm_fence { + struct pipe_reference reference; + bool external; + int fd; + struct virgl_hw_res *hw_res; +}; + struct virgl_drm_cmd_buf { struct virgl_cmd_buf base; @@ -86,18 +92,18 @@ struct virgl_drm_cmd_buf { }; -static inline struct virgl_hw_res * -virgl_hw_res(struct pipe_fence_handle *f) -{ - return (struct virgl_hw_res *)f; -} - static inline struct virgl_drm_winsys * virgl_drm_winsys(struct virgl_winsys *iws) { return (struct virgl_drm_winsys *)iws; } +static inline struct virgl_drm_fence * +virgl_drm_fence(struct pipe_fence_handle *f) +{ + return (struct virgl_drm_fence *)f; +} + static inline struct virgl_drm_cmd_buf * virgl_drm_cmd_buf(struct virgl_cmd_buf *cbuf) { -- 2.7.4