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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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ff758a12b4
This patch adds the gfx8 interface file between amdgpu and amdkfd. This interface file is currently in use when running on a Carrizo-based system. The interface itself is represented by a pointer to struct kfd_dev. The pointer is located inside amdgpu_device structure. All the register accesses that amdkfd need are done using this interface. This allows us to avoid direct register accesses in amdkfd proper, while also allows us to avoid locking between amdkfd and amdgpu. The single exception is the doorbells that are used in both of the drivers. However, because they are located in separate pci bar pages, the danger of sharing registers between the drivers is minimal. Having said that, we are planning to move the doorbells as well to amdgpu. Signed-off-by: Ben Goz <ben.goz@amd.com> Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
66 lines
2.4 KiB
C
66 lines
2.4 KiB
C
/*
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* Copyright 2014 Advanced Micro Devices, Inc.
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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 COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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/* amdgpu_amdkfd.h defines the private interface between amdgpu and amdkfd. */
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#ifndef AMDGPU_AMDKFD_H_INCLUDED
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#define AMDGPU_AMDKFD_H_INCLUDED
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#include <linux/types.h>
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#include <kgd_kfd_interface.h>
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struct amdgpu_device;
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struct kgd_mem {
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struct amdgpu_bo *bo;
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uint64_t gpu_addr;
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void *cpu_ptr;
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};
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bool amdgpu_amdkfd_init(void);
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void amdgpu_amdkfd_fini(void);
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bool amdgpu_amdkfd_load_interface(struct amdgpu_device *rdev);
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void amdgpu_amdkfd_suspend(struct amdgpu_device *rdev);
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int amdgpu_amdkfd_resume(struct amdgpu_device *rdev);
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void amdgpu_amdkfd_interrupt(struct amdgpu_device *rdev,
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const void *ih_ring_entry);
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void amdgpu_amdkfd_device_probe(struct amdgpu_device *rdev);
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void amdgpu_amdkfd_device_init(struct amdgpu_device *rdev);
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void amdgpu_amdkfd_device_fini(struct amdgpu_device *rdev);
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struct kfd2kgd_calls *amdgpu_amdkfd_gfx_7_get_functions(void);
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struct kfd2kgd_calls *amdgpu_amdkfd_gfx_8_0_get_functions(void);
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/* Shared API */
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int alloc_gtt_mem(struct kgd_dev *kgd, size_t size,
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void **mem_obj, uint64_t *gpu_addr,
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void **cpu_ptr);
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void free_gtt_mem(struct kgd_dev *kgd, void *mem_obj);
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uint64_t get_vmem_size(struct kgd_dev *kgd);
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uint64_t get_gpu_clock_counter(struct kgd_dev *kgd);
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uint32_t get_max_engine_clock_in_mhz(struct kgd_dev *kgd);
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#endif /* AMDGPU_AMDKFD_H_INCLUDED */
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