/*
* Copyright 2019 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_mes.h"
#include "amdgpu.h"
#include "soc15_common.h"
#include "amdgpu_mes_ctx.h"
#define AMDGPU_MES_MAX_NUM_OF_QUEUES_PER_PROCESS 1024
#define AMDGPU_ONE_DOORBELL_SIZE 8
int amdgpu_mes_doorbell_process_slice(struct amdgpu_device *adev)
{
return roundup(AMDGPU_ONE_DOORBELL_SIZE *
AMDGPU_MES_MAX_NUM_OF_QUEUES_PER_PROCESS,
PAGE_SIZE);
}
int amdgpu_mes_alloc_process_doorbells(struct amdgpu_device *adev,
unsigned int *doorbell_index)
{
int r = ida_simple_get(&adev->mes.doorbell_ida, 2,
adev->mes.max_doorbell_slices,
GFP_KERNEL);
if (r > 0)
*doorbell_index = r;
return r;
}
void amdgpu_mes_free_process_doorbells(struct amdgpu_device *adev,
unsigned int doorbell_index)
{
if (doorbell_index)
ida_simple_remove(&adev->mes.doorbell_ida, doorbell_index);
}
unsigned int amdgpu_mes_get_doorbell_dw_offset_in_bar(
struct amdgpu_device *adev,
uint32_t doorbell_index,
unsigned int doorbell_id)
{
return ((doorbell_index *
amdgpu_mes_doorbell_process_slice(adev)) / sizeof(u32) +
doorbell_id * 2);
}
static int amdgpu_mes_queue_doorbell_get(struct amdgpu_device *adev,
struct amdgpu_mes_process *process,
