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39844fb27c
Add an API to append data to a priv cmdbuf entry. Hold the write pointer offset internally in the entry instead of having the user keep track of where those words are written to. This helps in eventually hiding struct priv_cmd_entry from users and provides a more consistent interface in general. The wait and incr commands are now slightly easier to read as well when they're just arrays of data. A syncfd-backed prefence may be composed of several individual fences. Some of those (or even a fence backed by just one) may be already expired, and currently the syncfd export design releases and nulls semaphores when expired (see gk20a_sync_pt_has_signaled()) so for those the wait cmdbuf is appended with zeros; the specific function is for this purpose. Jira NVGPU-4548 Change-Id: I1057f98c1b5b407460aa6e1dcba917da9c9aa9c9 Signed-off-by: Konsta Hölttä <kholtta@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2325099 (cherry picked from commit 6a00a65a86d8249cfeb06a05682abb4771949f19) Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2331336 Reviewed-by: automaticguardword <automaticguardword@nvidia.com> Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> Reviewed-by: Alex Waterman <alexw@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> GVS: Gerrit_Virtual_Submit Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
104 lines
2.7 KiB
C
104 lines
2.7 KiB
C
/*
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* GK20A sema cmdbuf
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*
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* Copyright (c) 2018, NVIDIA CORPORATION. All rights reserved.
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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 shall be included in
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* all copies or substantial portions of the 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
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <nvgpu/log.h>
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#include <nvgpu/semaphore.h>
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#include <nvgpu/priv_cmdbuf.h>
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#include "sema_cmdbuf_gk20a.h"
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u32 gk20a_sema_get_wait_cmd_size(void)
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{
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return 8U;
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}
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u32 gk20a_sema_get_incr_cmd_size(void)
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{
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return 10U;
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}
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static void gk20a_sema_add_header(struct gk20a *g,
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struct priv_cmd_entry *cmd, u64 sema_va)
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{
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u32 data[] = {
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/* semaphore_a */
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0x20010004U,
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/* offset_upper */
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(u32)(sema_va >> 32) & 0xffU,
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/* semaphore_b */
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0x20010005U,
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/* offset */
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(u32)sema_va & 0xffffffff,
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};
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nvgpu_priv_cmdbuf_append(g, cmd, data, ARRAY_SIZE(data));
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}
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void gk20a_sema_add_wait_cmd(struct gk20a *g,
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struct priv_cmd_entry *cmd,
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struct nvgpu_semaphore *s, u64 sema_va)
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{
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u32 data[] = {
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/* semaphore_c */
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0x20010006U,
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/* payload */
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nvgpu_semaphore_get_value(s),
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/* semaphore_d */
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0x20010007U,
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/* operation: acq_geq, switch_en */
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0x4U | BIT32(12),
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};
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nvgpu_log_fn(g, " ");
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gk20a_sema_add_header(g, cmd, sema_va);
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nvgpu_priv_cmdbuf_append(g, cmd, data, ARRAY_SIZE(data));
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}
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void gk20a_sema_add_incr_cmd(struct gk20a *g,
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struct priv_cmd_entry *cmd,
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struct nvgpu_semaphore *s, u64 sema_va,
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bool wfi)
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{
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u32 data[] = {
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/* semaphore_c */
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0x20010006U,
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/* payload */
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nvgpu_semaphore_get_value(s),
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/* semaphore_d */
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0x20010007U,
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/* operation: release, wfi */
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0x2UL | ((wfi ? 0x0UL : 0x1UL) << 20),
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/* non_stall_int */
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0x20010008U,
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/* ignored */
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0U,
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};
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nvgpu_log_fn(g, " ");
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gk20a_sema_add_header(g, cmd, sema_va);
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nvgpu_priv_cmdbuf_append(g, cmd, data, ARRAY_SIZE(data));
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}
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