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2adea940f1
Heavily based on the already existing for the v3d OpenGL driver, but without references, and with some extra OOM checks (Vulkan CTS has several OOM tests). With this commit v3dv_bo_alloc and v3dv_bo_free became frontends to the bo_cache. The former tries to get a BO from the cache if possible, and the latter stores the BO on the cache if possible. The former also adds a new parameter to point if the BO to allocate is private. As v3d we are only caching private BOs, those created by the driver for internal use (like CLs, tile_alloc, etc). They are the ones with the highest change of being reused (for example, CL BOs are always 4KB, so they can always be reused). User-created BOs can have any size, including some very large ones for buffers and images, which makes them far less likely to be reused and would add a lot of memory pressure if we decided to cache them. In any case, in practice, we found that we could get a performance improvement by caching also user-created BOs, but that would need more care and an analysis to decide which ones makes sense. Would also require to change how the cached BOs are stored by size. Right now there are an array of list_head, that doesn't work well with big BOs. If done, that would be handled on a separate commit. Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6766>
108 lines
3 KiB
C
108 lines
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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list_inithead(&cl->bo_list);
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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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list_for_each_entry_safe(struct v3dv_bo, bo, &cl->bo_list, list_link) {
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assert(cl->job);
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list_del(&bo->list_link);
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v3dv_bo_free(cl->job->device, 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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static bool
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cl_alloc_bo(struct v3dv_cl *cl, uint32_t space, bool use_branch)
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{
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struct v3dv_bo *bo = v3dv_bo_alloc(cl->job->device, space, "CL", true);
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if (!bo) {
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fprintf(stderr, "failed to allocate memory for command list\n");
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v3dv_flag_oom(NULL, cl->job);
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return false;
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}
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list_addtail(&bo->list_link, &cl->bo_list);
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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\n");
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v3dv_flag_oom(NULL, cl->job);
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return false;
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}
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/* Chain to the new BO from the old one if requested */
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if (use_branch && 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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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 true;
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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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cl_alloc_bo(cl, space, false);
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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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cl_alloc_bo(cl, space, true);
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}
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