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authorMaxime Ripard <maxime@cerno.tech>2021-05-11 13:35:52 +0200
committerMaxime Ripard <maxime@cerno.tech>2021-05-11 13:35:52 +0200
commitc55b44c9386f3ee1b08752638559f19deaf6040d (patch)
treec843a21f45180387fcd9eb2625cc9d1f166a3156 /drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c
parentMAINTAINERS: Update my e-mail (diff)
parentLinux 5.13-rc1 (diff)
downloadlinux-c55b44c9386f3ee1b08752638559f19deaf6040d.tar.xz
linux-c55b44c9386f3ee1b08752638559f19deaf6040d.zip
Merge drm/drm-fixes into drm-misc-fixes
Start this new release drm-misc-fixes branch Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c')
-rw-r--r--drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c98
1 files changed, 98 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c
new file mode 100644
index 000000000000..02afd4115675
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c
@@ -0,0 +1,98 @@
+/*
+ * Copyright 2021 Advanced Micro Devices, Inc.
+ *
+ * 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, sublicense,
+ * 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 above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * 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 NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
+ *
+ */
+
+#include "amdgpu_reset.h"
+#include "aldebaran.h"
+
+int amdgpu_reset_add_handler(struct amdgpu_reset_control *reset_ctl,
+ struct amdgpu_reset_handler *handler)
+{
+ /* TODO: Check if handler exists? */
+ list_add_tail(&handler->handler_list, &reset_ctl->reset_handlers);
+ return 0;
+}
+
+int amdgpu_reset_init(struct amdgpu_device *adev)
+{
+ int ret = 0;
+
+ switch (adev->asic_type) {
+ case CHIP_ALDEBARAN:
+ ret = aldebaran_reset_init(adev);
+ break;
+ default:
+ break;
+ }
+
+ return ret;
+}
+
+int amdgpu_reset_fini(struct amdgpu_device *adev)
+{
+ int ret = 0;
+
+ switch (adev->asic_type) {
+ case CHIP_ALDEBARAN:
+ ret = aldebaran_reset_fini(adev);
+ break;
+ default:
+ break;
+ }
+
+ return ret;
+}
+
+int amdgpu_reset_prepare_hwcontext(struct amdgpu_device *adev,
+ struct amdgpu_reset_context *reset_context)
+{
+ struct amdgpu_reset_handler *reset_handler = NULL;
+
+ if (adev->reset_cntl && adev->reset_cntl->get_reset_handler)
+ reset_handler = adev->reset_cntl->get_reset_handler(
+ adev->reset_cntl, reset_context);
+ if (!reset_handler)
+ return -ENOSYS;
+
+ return reset_handler->prepare_hwcontext(adev->reset_cntl,
+ reset_context);
+}
+
+int amdgpu_reset_perform_reset(struct amdgpu_device *adev,
+ struct amdgpu_reset_context *reset_context)
+{
+ int ret;
+ struct amdgpu_reset_handler *reset_handler = NULL;
+
+ if (adev->reset_cntl)
+ reset_handler = adev->reset_cntl->get_reset_handler(
+ adev->reset_cntl, reset_context);
+ if (!reset_handler)
+ return -ENOSYS;
+
+ ret = reset_handler->perform_reset(adev->reset_cntl, reset_context);
+ if (ret)
+ return ret;
+
+ return reset_handler->restore_hwcontext(adev->reset_cntl,
+ reset_context);
+}