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8ed2e53e0d
It is valid to submit with an empty list ofcommand buffers, however, we still need to wait on the pWaitSemaphores provided and only signal the pSignalSemaphores and fence once we have finished waiting on them to honor the semantics of the submission. Because waiting and signaling happens in the kernel, the easiest way to do this is to submit a trivial no-op job to the GPU. To do this, we need to refactor some of our code so that code that might have been operating on a command buffer starts operating on a job instead, so we can resuse most of our infrastructure to create the no-op job. Additionally, because no-op jobs are created internally by the driver, we are responsible for destroying them too. For this, we bind a fence to each no-op job we submit and we test for completion of in-flight no-op jobs (and destory them if completed) every time vkQueueSubmit is called. Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6766>
128 lines
3.3 KiB
C
128 lines
3.3 KiB
C
/*
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* Copyright © 2019 Raspberry Pi
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include "v3dv_private.h"
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#include "broadcom/cle/v3dx_pack.h"
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void
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v3dv_cl_init(struct v3dv_job *job, struct v3dv_cl *cl)
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{
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cl->base = NULL;
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cl->next = cl->base;
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cl->bo = NULL;
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cl->size = 0;
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cl->job = job;
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}
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void
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v3dv_cl_begin(struct v3dv_cl *cl)
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{
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assert(v3dv_cl_offset(cl) == 0);
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}
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void
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v3dv_cl_reset(struct v3dv_cl *cl)
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{
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/* FIXME: consider keeping the BO when the command buffer is reset with
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* flag VK_COMMAND_BUFFER_RESET_RELEASE_RESOURCES_BIT.
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*/
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v3dv_cl_init(cl->job, cl);
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}
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void
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v3dv_cl_destroy(struct v3dv_cl *cl)
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{
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if (cl->bo) {
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assert(cl->job);
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v3dv_bo_free(cl->job->device, cl->bo);
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}
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/* Leave the CL in a reset state to catch use after destroy instances */
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v3dv_cl_init(NULL, cl);
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}
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uint32_t
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v3dv_cl_ensure_space(struct v3dv_cl *cl, uint32_t space, uint32_t alignment)
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{
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uint32_t offset = align(v3dv_cl_offset(cl), alignment);
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if (offset + space <= cl->size) {
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cl->next = cl->base + offset;
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return offset;
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}
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struct v3dv_bo *bo = v3dv_bo_alloc(cl->job->device, space, "CL");
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if (!bo) {
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fprintf(stderr, "failed to allocate memory for command list");
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abort();
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}
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v3dv_job_add_bo(cl->job, bo);
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bool ok = v3dv_bo_map(cl->job->device, bo, bo->size);
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if (!ok) {
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fprintf(stderr, "failed to map command list buffer");
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abort();
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}
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cl->bo = bo;
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cl->base = cl->bo->map;
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cl->size = cl->bo->size;
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cl->next = cl->base;
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return 0;
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}
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void
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v3dv_cl_ensure_space_with_branch(struct v3dv_cl *cl, uint32_t space)
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{
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if (v3dv_cl_offset(cl) + space + cl_packet_length(BRANCH) <= cl->size)
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return;
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struct v3dv_bo *bo = v3dv_bo_alloc(cl->job->device, space, "CL");
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if (!bo) {
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fprintf(stderr, "failed to allocate memory for command list");
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abort();
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}
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/* Chain to the new BO from the old one if needed */
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if (cl->bo) {
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cl_emit(cl, BRANCH, branch) {
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branch.address = v3dv_cl_address(bo, 0);
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}
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}
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v3dv_job_add_bo(cl->job, bo);
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bool ok = v3dv_bo_map(cl->job->device, bo, bo->size);
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if (!ok) {
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fprintf(stderr, "failed to map command list buffer");
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abort();
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}
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cl->bo = bo;
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cl->base = cl->bo->map;
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cl->size = cl->bo->size;
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cl->next = cl->base;
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}
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