forked from Minki/linux
5b87245faf
After amdkfd module is merged into amdgpu, KFD can call amdgpu directly and no longer needs to use the function pointer. Replace those function pointers with functions if they are not ASIC dependent. Signed-off-by: Amber Lin <Amber.Lin@amd.com> Acked-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
85 lines
2.1 KiB
C
85 lines
2.1 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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#include <linux/types.h>
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#include "kfd_priv.h"
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#include "amdgpu_ids.h"
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static unsigned int pasid_bits = 16;
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static const struct kfd2kgd_calls *kfd2kgd;
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bool kfd_set_pasid_limit(unsigned int new_limit)
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{
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if (new_limit < 2)
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return false;
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if (new_limit < (1U << pasid_bits)) {
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if (kfd2kgd)
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/* We've already allocated user PASIDs, too late to
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* change the limit
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*/
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return false;
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while (new_limit < (1U << pasid_bits))
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pasid_bits--;
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}
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return true;
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}
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unsigned int kfd_get_pasid_limit(void)
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{
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return 1U << pasid_bits;
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}
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unsigned int kfd_pasid_alloc(void)
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{
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int r;
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/* Find the first best KFD device for calling KGD */
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if (!kfd2kgd) {
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struct kfd_dev *dev = NULL;
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unsigned int i = 0;
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while ((kfd_topology_enum_kfd_devices(i, &dev)) == 0) {
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if (dev && dev->kfd2kgd) {
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kfd2kgd = dev->kfd2kgd;
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break;
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}
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i++;
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}
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if (!kfd2kgd)
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return false;
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}
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r = amdgpu_pasid_alloc(pasid_bits);
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return r > 0 ? r : 0;
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}
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void kfd_pasid_free(unsigned int pasid)
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{
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if (kfd2kgd)
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amdgpu_pasid_free(pasid);
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}
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