6898f0a568
This patch starts to add support for the VI APU in the KQ (kernel queue) module. Because most (more than 90%) of the KQ code is shared among AMD's APUs, we chose a design that performs most/all the code in the shared KQ file (kfd_kernel_queue.c). If there is H/W specific code to be executed, than it is written in an asic-specific extension function for that H/W. That asic-specific extension function is called from the shared function at the appropriate time. This requires that for every asic-specific extension function that is implemented in a specific ASIC, there will be an equivalent implementation in ALL ASICs, even if those implementations are just stubs. That way we achieve: - Maintainability: by having one copy of most of the code, we only need to fix bugs at one locations - Readability: very clear what is the shared code and what is done per ASIC - Extensibility: very easy to add new H/W specific files/functions Signed-off-by: Ben Goz <ben.goz@amd.com> Signed-off-by: Oded Gabbay <oded.gabbay@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
57 lines
1.9 KiB
C
57 lines
1.9 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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*/
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#include "kfd_kernel_queue.h"
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static bool initialize_vi(struct kernel_queue *kq, struct kfd_dev *dev,
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enum kfd_queue_type type, unsigned int queue_size);
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static void uninitialize_vi(struct kernel_queue *kq);
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void kernel_queue_init_vi(struct kernel_queue_ops *ops)
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{
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ops->initialize = initialize_vi;
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ops->uninitialize = uninitialize_vi;
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}
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static bool initialize_vi(struct kernel_queue *kq, struct kfd_dev *dev,
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enum kfd_queue_type type, unsigned int queue_size)
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{
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int retval;
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retval = kfd_gtt_sa_allocate(dev, PAGE_SIZE, &kq->eop_mem);
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if (retval != 0)
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return false;
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kq->eop_gpu_addr = kq->eop_mem->gpu_addr;
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kq->eop_kernel_addr = kq->eop_mem->cpu_ptr;
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memset(kq->eop_kernel_addr, 0, PAGE_SIZE);
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return true;
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}
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static void uninitialize_vi(struct kernel_queue *kq)
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{
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kfd_gtt_sa_free(kq->dev, kq->eop_mem);
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}
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