From: Rob Clark robdclark@chromium.org
We'll be re-using these for the VM_BIND ioctl.
Also, rename a few things in the uapi header to reflect that syncobj use is not specific to the submit ioctl.
Signed-off-by: Rob Clark robdclark@chromium.org --- drivers/gpu/drm/msm/Makefile | 1 + drivers/gpu/drm/msm/msm_gem_submit.c | 192 ++------------------------- drivers/gpu/drm/msm/msm_syncobj.c | 172 ++++++++++++++++++++++++ drivers/gpu/drm/msm/msm_syncobj.h | 37 ++++++ include/uapi/drm/msm_drm.h | 26 ++-- 5 files changed, 235 insertions(+), 193 deletions(-) create mode 100644 drivers/gpu/drm/msm/msm_syncobj.c create mode 100644 drivers/gpu/drm/msm/msm_syncobj.h
diff --git a/drivers/gpu/drm/msm/Makefile b/drivers/gpu/drm/msm/Makefile index 5df20cbeafb8..8af34f87e0c8 100644 --- a/drivers/gpu/drm/msm/Makefile +++ b/drivers/gpu/drm/msm/Makefile @@ -128,6 +128,7 @@ msm-y += \ msm_rd.o \ msm_ringbuffer.o \ msm_submitqueue.o \ + msm_syncobj.o \ msm_gpu_tracepoints.o \
msm-$(CONFIG_DRM_FBDEV_EMULATION) += msm_fbdev.o diff --git a/drivers/gpu/drm/msm/msm_gem_submit.c b/drivers/gpu/drm/msm/msm_gem_submit.c index f282d691087f..bfb8c5ac1f1e 100644 --- a/drivers/gpu/drm/msm/msm_gem_submit.c +++ b/drivers/gpu/drm/msm/msm_gem_submit.c @@ -16,6 +16,7 @@ #include "msm_gpu.h" #include "msm_gem.h" #include "msm_gpu_trace.h" +#include "msm_syncobj.h"
/* For userspace errors, use DRM_UT_DRIVER.. so that userspace can enable * error msgs for debugging, but we don't spam dmesg by default @@ -486,173 +487,6 @@ void msm_submit_retire(struct msm_gem_submit *submit) } }
-struct msm_submit_post_dep { - struct drm_syncobj *syncobj; - uint64_t point; - struct dma_fence_chain *chain; -}; - -static struct drm_syncobj **msm_parse_deps(struct msm_gem_submit *submit, - struct drm_file *file, - uint64_t in_syncobjs_addr, - uint32_t nr_in_syncobjs, - size_t syncobj_stride) -{ - struct drm_syncobj **syncobjs = NULL; - struct drm_msm_gem_submit_syncobj syncobj_desc = {0}; - int ret = 0; - uint32_t i, j; - - syncobjs = kcalloc(nr_in_syncobjs, sizeof(*syncobjs), - GFP_KERNEL | __GFP_NOWARN | __GFP_NORETRY); - if (!syncobjs) - return ERR_PTR(-ENOMEM); - - for (i = 0; i < nr_in_syncobjs; ++i) { - uint64_t address = in_syncobjs_addr + i * syncobj_stride; - - if (copy_from_user(&syncobj_desc, - u64_to_user_ptr(address), - min(syncobj_stride, sizeof(syncobj_desc)))) { - ret = -EFAULT; - break; - } - - if (syncobj_desc.point && - !drm_core_check_feature(submit->dev, DRIVER_SYNCOBJ_TIMELINE)) { - ret = SUBMIT_ERROR(EOPNOTSUPP, submit, "syncobj timeline unsupported"); - break; - } - - if (syncobj_desc.flags & ~MSM_SUBMIT_SYNCOBJ_FLAGS) { - ret = SUBMIT_ERROR(EINVAL, submit, "invalid syncobj flags: %x", syncobj_desc.flags); - break; - } - - ret = drm_sched_job_add_syncobj_dependency(&submit->base, file, - syncobj_desc.handle, syncobj_desc.point); - if (ret) - break; - - if (syncobj_desc.flags & MSM_SUBMIT_SYNCOBJ_RESET) { - syncobjs[i] = - drm_syncobj_find(file, syncobj_desc.handle); - if (!syncobjs[i]) { - ret = SUBMIT_ERROR(EINVAL, submit, "invalid syncobj handle: %u", i); - break; - } - } - } - - if (ret) { - for (j = 0; j <= i; ++j) { - if (syncobjs[j]) - drm_syncobj_put(syncobjs[j]); - } - kfree(syncobjs); - return ERR_PTR(ret); - } - return syncobjs; -} - -static void msm_reset_syncobjs(struct drm_syncobj **syncobjs, - uint32_t nr_syncobjs) -{ - uint32_t i; - - for (i = 0; syncobjs && i < nr_syncobjs; ++i) { - if (syncobjs[i]) - drm_syncobj_replace_fence(syncobjs[i], NULL); - } -} - -static struct msm_submit_post_dep *msm_parse_post_deps(struct drm_device *dev, - struct drm_file *file, - uint64_t syncobjs_addr, - uint32_t nr_syncobjs, - size_t syncobj_stride) -{ - struct msm_submit_post_dep *post_deps; - struct drm_msm_gem_submit_syncobj syncobj_desc = {0}; - int ret = 0; - uint32_t i, j; - - post_deps = kcalloc(nr_syncobjs, sizeof(*post_deps), - GFP_KERNEL | __GFP_NOWARN | __GFP_NORETRY); - if (!post_deps) - return ERR_PTR(-ENOMEM); - - for (i = 0; i < nr_syncobjs; ++i) { - uint64_t address = syncobjs_addr + i * syncobj_stride; - - if (copy_from_user(&syncobj_desc, - u64_to_user_ptr(address), - min(syncobj_stride, sizeof(syncobj_desc)))) { - ret = -EFAULT; - break; - } - - post_deps[i].point = syncobj_desc.point; - - if (syncobj_desc.flags) { - ret = UERR(EINVAL, dev, "invalid syncobj flags"); - break; - } - - if (syncobj_desc.point) { - if (!drm_core_check_feature(dev, - DRIVER_SYNCOBJ_TIMELINE)) { - ret = UERR(EOPNOTSUPP, dev, "syncobj timeline unsupported"); - break; - } - - post_deps[i].chain = dma_fence_chain_alloc(); - if (!post_deps[i].chain) { - ret = -ENOMEM; - break; - } - } - - post_deps[i].syncobj = - drm_syncobj_find(file, syncobj_desc.handle); - if (!post_deps[i].syncobj) { - ret = UERR(EINVAL, dev, "invalid syncobj handle"); - break; - } - } - - if (ret) { - for (j = 0; j <= i; ++j) { - dma_fence_chain_free(post_deps[j].chain); - if (post_deps[j].syncobj) - drm_syncobj_put(post_deps[j].syncobj); - } - - kfree(post_deps); - return ERR_PTR(ret); - } - - return post_deps; -} - -static void msm_process_post_deps(struct msm_submit_post_dep *post_deps, - uint32_t count, struct dma_fence *fence) -{ - uint32_t i; - - for (i = 0; post_deps && i < count; ++i) { - if (post_deps[i].chain) { - drm_syncobj_add_point(post_deps[i].syncobj, - post_deps[i].chain, - fence, post_deps[i].point); - post_deps[i].chain = NULL; - } else { - drm_syncobj_replace_fence(post_deps[i].syncobj, - fence); - } - } -} - int msm_ioctl_gem_submit(struct drm_device *dev, void *data, struct drm_file *file) { @@ -663,7 +497,7 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data, struct msm_gpu *gpu = priv->gpu; struct msm_gpu_submitqueue *queue; struct msm_ringbuffer *ring; - struct msm_submit_post_dep *post_deps = NULL; + struct msm_syncobj_post_dep *post_deps = NULL; struct drm_syncobj **syncobjs_to_reset = NULL; struct sync_file *sync_file = NULL; int out_fence_fd = -1; @@ -740,10 +574,10 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data, }
if (args->flags & MSM_SUBMIT_SYNCOBJ_IN) { - syncobjs_to_reset = msm_parse_deps(submit, file, - args->in_syncobjs, - args->nr_in_syncobjs, - args->syncobj_stride); + syncobjs_to_reset = msm_syncobj_parse_deps(dev, &submit->base, + file, args->in_syncobjs, + args->nr_in_syncobjs, + args->syncobj_stride); if (IS_ERR(syncobjs_to_reset)) { ret = PTR_ERR(syncobjs_to_reset); goto out_unlock; @@ -751,10 +585,10 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data, }
if (args->flags & MSM_SUBMIT_SYNCOBJ_OUT) { - post_deps = msm_parse_post_deps(dev, file, - args->out_syncobjs, - args->nr_out_syncobjs, - args->syncobj_stride); + post_deps = msm_syncobj_parse_post_deps(dev, file, + args->out_syncobjs, + args->nr_out_syncobjs, + args->syncobj_stride); if (IS_ERR(post_deps)) { ret = PTR_ERR(post_deps); goto out_unlock; @@ -897,10 +731,8 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data, args->fence = submit->fence_id; queue->last_fence = submit->fence_id;
- msm_reset_syncobjs(syncobjs_to_reset, args->nr_in_syncobjs); - msm_process_post_deps(post_deps, args->nr_out_syncobjs, - submit->user_fence); - + msm_syncobj_reset(syncobjs_to_reset, args->nr_in_syncobjs); + msm_syncobj_process_post_deps(post_deps, args->nr_out_syncobjs, submit->user_fence);
out: submit_cleanup(submit, !!ret); diff --git a/drivers/gpu/drm/msm/msm_syncobj.c b/drivers/gpu/drm/msm/msm_syncobj.c new file mode 100644 index 000000000000..4baa9f522c54 --- /dev/null +++ b/drivers/gpu/drm/msm/msm_syncobj.c @@ -0,0 +1,172 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* Copyright (C) 2020 Google, Inc */ + +#include "drm/drm_drv.h" + +#include "msm_drv.h" +#include "msm_syncobj.h" + +struct drm_syncobj ** +msm_syncobj_parse_deps(struct drm_device *dev, + struct drm_sched_job *job, + struct drm_file *file, + uint64_t in_syncobjs_addr, + uint32_t nr_in_syncobjs, + size_t syncobj_stride) +{ + struct drm_syncobj **syncobjs = NULL; + struct drm_msm_syncobj syncobj_desc = {0}; + int ret = 0; + uint32_t i, j; + + syncobjs = kcalloc(nr_in_syncobjs, sizeof(*syncobjs), + GFP_KERNEL | __GFP_NOWARN | __GFP_NORETRY); + if (!syncobjs) + return ERR_PTR(-ENOMEM); + + for (i = 0; i < nr_in_syncobjs; ++i) { + uint64_t address = in_syncobjs_addr + i * syncobj_stride; + + if (copy_from_user(&syncobj_desc, + u64_to_user_ptr(address), + min(syncobj_stride, sizeof(syncobj_desc)))) { + ret = -EFAULT; + break; + } + + if (syncobj_desc.point && + !drm_core_check_feature(dev, DRIVER_SYNCOBJ_TIMELINE)) { + ret = UERR(EOPNOTSUPP, dev, "syncobj timeline unsupported"); + break; + } + + if (syncobj_desc.flags & ~MSM_SYNCOBJ_FLAGS) { + ret = UERR(EINVAL, dev, "invalid syncobj flags: %x", syncobj_desc.flags); + break; + } + + ret = drm_sched_job_add_syncobj_dependency(job, file, + syncobj_desc.handle, + syncobj_desc.point); + if (ret) + break; + + if (syncobj_desc.flags & MSM_SYNCOBJ_RESET) { + syncobjs[i] = drm_syncobj_find(file, syncobj_desc.handle); + if (!syncobjs[i]) { + ret = UERR(EINVAL, dev, "invalid syncobj handle: %u", i); + break; + } + } + } + + if (ret) { + for (j = 0; j <= i; ++j) { + if (syncobjs[j]) + drm_syncobj_put(syncobjs[j]); + } + kfree(syncobjs); + return ERR_PTR(ret); + } + return syncobjs; +} + +void +msm_syncobj_reset(struct drm_syncobj **syncobjs, uint32_t nr_syncobjs) +{ + uint32_t i; + + for (i = 0; syncobjs && i < nr_syncobjs; ++i) { + if (syncobjs[i]) + drm_syncobj_replace_fence(syncobjs[i], NULL); + } +} + +struct msm_syncobj_post_dep * +msm_syncobj_parse_post_deps(struct drm_device *dev, + struct drm_file *file, + uint64_t syncobjs_addr, + uint32_t nr_syncobjs, + size_t syncobj_stride) +{ + struct msm_syncobj_post_dep *post_deps; + struct drm_msm_syncobj syncobj_desc = {0}; + int ret = 0; + uint32_t i, j; + + post_deps = kcalloc(nr_syncobjs, sizeof(*post_deps), + GFP_KERNEL | __GFP_NOWARN | __GFP_NORETRY); + if (!post_deps) + return ERR_PTR(-ENOMEM); + + for (i = 0; i < nr_syncobjs; ++i) { + uint64_t address = syncobjs_addr + i * syncobj_stride; + + if (copy_from_user(&syncobj_desc, + u64_to_user_ptr(address), + min(syncobj_stride, sizeof(syncobj_desc)))) { + ret = -EFAULT; + break; + } + + post_deps[i].point = syncobj_desc.point; + + if (syncobj_desc.flags) { + ret = UERR(EINVAL, dev, "invalid syncobj flags"); + break; + } + + if (syncobj_desc.point) { + if (!drm_core_check_feature(dev, + DRIVER_SYNCOBJ_TIMELINE)) { + ret = UERR(EOPNOTSUPP, dev, "syncobj timeline unsupported"); + break; + } + + post_deps[i].chain = dma_fence_chain_alloc(); + if (!post_deps[i].chain) { + ret = -ENOMEM; + break; + } + } + + post_deps[i].syncobj = + drm_syncobj_find(file, syncobj_desc.handle); + if (!post_deps[i].syncobj) { + ret = UERR(EINVAL, dev, "invalid syncobj handle"); + break; + } + } + + if (ret) { + for (j = 0; j <= i; ++j) { + dma_fence_chain_free(post_deps[j].chain); + if (post_deps[j].syncobj) + drm_syncobj_put(post_deps[j].syncobj); + } + + kfree(post_deps); + return ERR_PTR(ret); + } + + return post_deps; +} + +void +msm_syncobj_process_post_deps(struct msm_syncobj_post_dep *post_deps, + uint32_t count, struct dma_fence *fence) +{ + uint32_t i; + + for (i = 0; post_deps && i < count; ++i) { + if (post_deps[i].chain) { + drm_syncobj_add_point(post_deps[i].syncobj, + post_deps[i].chain, + fence, post_deps[i].point); + post_deps[i].chain = NULL; + } else { + drm_syncobj_replace_fence(post_deps[i].syncobj, + fence); + } + } +} diff --git a/drivers/gpu/drm/msm/msm_syncobj.h b/drivers/gpu/drm/msm/msm_syncobj.h new file mode 100644 index 000000000000..bcaa15d01da0 --- /dev/null +++ b/drivers/gpu/drm/msm/msm_syncobj.h @@ -0,0 +1,37 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* Copyright (C) 2020 Google, Inc */ + +#ifndef __MSM_GEM_SYNCOBJ_H__ +#define __MSM_GEM_SYNCOBJ_H__ + +#include "drm/drm_device.h" +#include "drm/drm_syncobj.h" +#include "drm/gpu_scheduler.h" + +struct msm_syncobj_post_dep { + struct drm_syncobj *syncobj; + uint64_t point; + struct dma_fence_chain *chain; +}; + +struct drm_syncobj ** +msm_syncobj_parse_deps(struct drm_device *dev, + struct drm_sched_job *job, + struct drm_file *file, + uint64_t in_syncobjs_addr, + uint32_t nr_in_syncobjs, + size_t syncobj_stride); + +void msm_syncobj_reset(struct drm_syncobj **syncobjs, uint32_t nr_syncobjs); + +struct msm_syncobj_post_dep * +msm_syncobj_parse_post_deps(struct drm_device *dev, + struct drm_file *file, + uint64_t syncobjs_addr, + uint32_t nr_syncobjs, + size_t syncobj_stride); + +void msm_syncobj_process_post_deps(struct msm_syncobj_post_dep *post_deps, + uint32_t count, struct dma_fence *fence); + +#endif /* __MSM_GEM_SYNCOBJ_H__ */ diff --git a/include/uapi/drm/msm_drm.h b/include/uapi/drm/msm_drm.h index 1bccc347945c..2c2fc4b284d0 100644 --- a/include/uapi/drm/msm_drm.h +++ b/include/uapi/drm/msm_drm.h @@ -220,6 +220,17 @@ struct drm_msm_gem_cpu_fini { * Cmdstream Submission: */
+#define MSM_SYNCOBJ_RESET 0x00000001 /* Reset syncobj after wait. */ +#define MSM_SYNCOBJ_FLAGS ( \ + MSM_SYNCOBJ_RESET | \ + 0) + +struct drm_msm_syncobj { + __u32 handle; /* in, syncobj handle. */ + __u32 flags; /* in, from MSM_SUBMIT_SYNCOBJ_FLAGS */ + __u64 point; /* in, timepoint for timeline syncobjs. */ +}; + /* The value written into the cmdstream is logically: * * ((relocbuf->gpuaddr + reloc_offset) << shift) | or @@ -309,17 +320,6 @@ struct drm_msm_gem_submit_bo { MSM_SUBMIT_FENCE_SN_IN | \ 0)
-#define MSM_SUBMIT_SYNCOBJ_RESET 0x00000001 /* Reset syncobj after wait. */ -#define MSM_SUBMIT_SYNCOBJ_FLAGS ( \ - MSM_SUBMIT_SYNCOBJ_RESET | \ - 0) - -struct drm_msm_gem_submit_syncobj { - __u32 handle; /* in, syncobj handle. */ - __u32 flags; /* in, from MSM_SUBMIT_SYNCOBJ_FLAGS */ - __u64 point; /* in, timepoint for timeline syncobjs. */ -}; - /* Each cmdstream submit consists of a table of buffers involved, and * one or more cmdstream buffers. This allows for conditional execution * (context-restore), and IB buffers needed for per tile/bin draw cmds. @@ -333,8 +333,8 @@ struct drm_msm_gem_submit { __u64 cmds; /* in, ptr to array of submit_cmd's */ __s32 fence_fd; /* in/out fence fd (see MSM_SUBMIT_FENCE_FD_IN/OUT) */ __u32 queueid; /* in, submitqueue id */ - __u64 in_syncobjs; /* in, ptr to array of drm_msm_gem_submit_syncobj */ - __u64 out_syncobjs; /* in, ptr to array of drm_msm_gem_submit_syncobj */ + __u64 in_syncobjs; /* in, ptr to array of drm_msm_syncobj */ + __u64 out_syncobjs; /* in, ptr to array of drm_msm_syncobj */ __u32 nr_in_syncobjs; /* in, number of entries in in_syncobj */ __u32 nr_out_syncobjs; /* in, number of entries in out_syncobj. */ __u32 syncobj_stride; /* in, stride of syncobj arrays. */