From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- drivers/gpu/drm/amd/amdgpu/amdgpu_reset.h | 129 ++++++++++++++++++++++++++++++ 1 file changed, 129 insertions(+) create mode 100644 drivers/gpu/drm/amd/amdgpu/amdgpu_reset.h (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_reset.h') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.h new file mode 100644 index 0000000000..f4a501ff87 --- /dev/null +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.h @@ -0,0 +1,129 @@ +/* + * 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. + * + */ + +#ifndef __AMDGPU_RESET_H__ +#define __AMDGPU_RESET_H__ + +#include "amdgpu.h" + +enum AMDGPU_RESET_FLAGS { + + AMDGPU_NEED_FULL_RESET = 0, + AMDGPU_SKIP_HW_RESET = 1, + AMDGPU_RESET_FOR_DEVICE_REMOVE = 2, +}; + +struct amdgpu_reset_context { + enum amd_reset_method method; + struct amdgpu_device *reset_req_dev; + struct amdgpu_job *job; + struct amdgpu_hive_info *hive; + struct list_head *reset_device_list; + unsigned long flags; +}; + +struct amdgpu_reset_handler { + enum amd_reset_method reset_method; + struct list_head handler_list; + int (*prepare_env)(struct amdgpu_reset_control *reset_ctl, + struct amdgpu_reset_context *context); + int (*prepare_hwcontext)(struct amdgpu_reset_control *reset_ctl, + struct amdgpu_reset_context *context); + int (*perform_reset)(struct amdgpu_reset_control *reset_ctl, + struct amdgpu_reset_context *context); + int (*restore_hwcontext)(struct amdgpu_reset_control *reset_ctl, + struct amdgpu_reset_context *context); + int (*restore_env)(struct amdgpu_reset_control *reset_ctl, + struct amdgpu_reset_context *context); + + int (*do_reset)(struct amdgpu_device *adev); +}; + +struct amdgpu_reset_control { + void *handle; + struct work_struct reset_work; + struct mutex reset_lock; + struct list_head reset_handlers; + atomic_t in_reset; + enum amd_reset_method active_reset; + struct amdgpu_reset_handler *(*get_reset_handler)( + struct amdgpu_reset_control *reset_ctl, + struct amdgpu_reset_context *context); + void (*async_reset)(struct work_struct *work); +}; + + +enum amdgpu_reset_domain_type { + SINGLE_DEVICE, + XGMI_HIVE +}; + +struct amdgpu_reset_domain { + struct kref refcount; + struct workqueue_struct *wq; + enum amdgpu_reset_domain_type type; + struct rw_semaphore sem; + atomic_t in_gpu_reset; + atomic_t reset_res; +}; + + +int amdgpu_reset_init(struct amdgpu_device *adev); +int amdgpu_reset_fini(struct amdgpu_device *adev); + +int amdgpu_reset_prepare_hwcontext(struct amdgpu_device *adev, + struct amdgpu_reset_context *reset_context); + +int amdgpu_reset_perform_reset(struct amdgpu_device *adev, + struct amdgpu_reset_context *reset_context); + +int amdgpu_reset_add_handler(struct amdgpu_reset_control *reset_ctl, + struct amdgpu_reset_handler *handler); + +struct amdgpu_reset_domain *amdgpu_reset_create_reset_domain(enum amdgpu_reset_domain_type type, + char *wq_name); + +void amdgpu_reset_destroy_reset_domain(struct kref *ref); + +static inline bool amdgpu_reset_get_reset_domain(struct amdgpu_reset_domain *domain) +{ + return kref_get_unless_zero(&domain->refcount) != 0; +} + +static inline void amdgpu_reset_put_reset_domain(struct amdgpu_reset_domain *domain) +{ + if (domain) + kref_put(&domain->refcount, amdgpu_reset_destroy_reset_domain); +} + +static inline bool amdgpu_reset_domain_schedule(struct amdgpu_reset_domain *domain, + struct work_struct *work) +{ + return queue_work(domain->wq, work); +} + +void amdgpu_device_lock_reset_domain(struct amdgpu_reset_domain *reset_domain); + +void amdgpu_device_unlock_reset_domain(struct amdgpu_reset_domain *reset_domain); + +#endif -- cgit v1.2.3