drm/amdgpu: clean up hw semaphore support in driver

No longer used.

Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Ken Wang  <Qingqing.Wang@amd.com>
Reviewed-by: Monk Liu <monk.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 0 insertions, 102 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_semaphore.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_semaphore.c
deleted file mode 100644
index 1caaf201b708..000000000000
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_semaphore.c
+++ /dev/null
@@ -1,102 +0,0 @@
-/*
- * Copyright 2011 Christian König.
- * All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sub license, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
- * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
- * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
- * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
- * USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
- * of the Software.
- *
- */
-/*
- * Authors:
- *    Christian König <deathsimple@vodafone.de>
- */
-#include <drm/drmP.h>
-#include "amdgpu.h"
-#include "amdgpu_trace.h"
-
-int amdgpu_semaphore_create(struct amdgpu_device *adev,
-                            struct amdgpu_semaphore **semaphore)
-{
-        int r;
-
-        *semaphore = kmalloc(sizeof(struct amdgpu_semaphore), GFP_KERNEL);
-        if (*semaphore == NULL) {
-                return -ENOMEM;
-        }
-        r = amdgpu_sa_bo_new(&adev->ring_tmp_bo,
-                             &(*semaphore)->sa_bo, 8, 8);
-        if (r) {
-                kfree(*semaphore);
-                *semaphore = NULL;
-                return r;
-        }
-        (*semaphore)->waiters = 0;
-        (*semaphore)->gpu_addr = amdgpu_sa_bo_gpu_addr((*semaphore)->sa_bo);
-
-        *((uint64_t *)amdgpu_sa_bo_cpu_addr((*semaphore)->sa_bo)) = 0;
-
-        return 0;
-}
-
-bool amdgpu_semaphore_emit_signal(struct amdgpu_ring *ring,
-                                  struct amdgpu_semaphore *semaphore)
-{
-        trace_amdgpu_semaphore_signale(ring->idx, semaphore);
-
-        if (amdgpu_ring_emit_semaphore(ring, semaphore, false)) {
-                --semaphore->waiters;
-
-                /* for debugging lockup only, used by sysfs debug files */
-                ring->last_semaphore_signal_addr = semaphore->gpu_addr;
-                return true;
-        }
-        return false;
-}
-
-bool amdgpu_semaphore_emit_wait(struct amdgpu_ring *ring,
-                                struct amdgpu_semaphore *semaphore)
-{
-        trace_amdgpu_semaphore_wait(ring->idx, semaphore);
-
-        if (amdgpu_ring_emit_semaphore(ring, semaphore, true)) {
-                ++semaphore->waiters;
-
-                /* for debugging lockup only, used by sysfs debug files */
-                ring->last_semaphore_wait_addr = semaphore->gpu_addr;
-                return true;
-        }
-        return false;
-}
-
-void amdgpu_semaphore_free(struct amdgpu_device *adev,
-                           struct amdgpu_semaphore **semaphore,
-                           struct fence *fence)
-{
-        if (semaphore == NULL || *semaphore == NULL) {
-                return;
-        }
-        if ((*semaphore)->waiters > 0) {
-                dev_err(adev->dev, "semaphore %p has more waiters than signalers,"
-                        " hardware lockup imminent!\n", *semaphore);
-        }
-        amdgpu_sa_bo_free(adev, &(*semaphore)->sa_bo, fence);
-        kfree(*semaphore);
-        *semaphore = NULL;
-}