/* SPDX-License-Identifier: MIT */ /* * Copyright (C) 2024 Advanced Micro Devices, Inc. All rights reserved. * All Rights Reserved. * * 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, sub license, 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 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 NON-INFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS 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. * * The above copyright notice and this permission notice (including the * next paragraph) shall be included in all copies or substantial portions * of the Software. *
*/
/** * isp_user_buffer_alloc - create user buffer object (BO) for isp * * @dev: isp device handle * @dmabuf: DMABUF handle for isp buffer allocated in system memory * @buf_obj: GPU buffer object handle to initialize * @buf_addr: GPU addr of the pinned BO to initialize * * Imports isp DMABUF to allocate and pin a user BO for isp internal use. It does * GART alloc to generate GPU addr for BO to make it accessible through the * GART aperture for ISP HW. * * This function is exported to allow the V4L2 isp device external to drm device * to create and access the isp user BO. * * Returns: * 0 on success, negative error code otherwise.
*/ int isp_user_buffer_alloc(struct device *dev, void *dmabuf, void **buf_obj, u64 *buf_addr)
{ struct platform_device *ispdev = to_platform_device(dev); conststruct isp_platform_data *isp_pdata; struct amdgpu_device *adev; struct mfd_cell *mfd_cell; struct amdgpu_bo *bo;
u64 gpu_addr; int ret;
if (WARN_ON(!ispdev)) return -ENODEV;
if (WARN_ON(!buf_obj)) return -EINVAL;
if (WARN_ON(!buf_addr)) return -EINVAL;
mfd_cell = &ispdev->mfd_cell[0]; if (!mfd_cell) return -ENODEV;
ret = is_valid_isp_device(ispdev->dev.parent, adev->dev); if (ret) return ret;
ret = amdgpu_bo_create_isp_user(adev, dmabuf,
AMDGPU_GEM_DOMAIN_GTT, &bo, &gpu_addr); if (ret) {
drm_err(&adev->ddev, "failed to alloc gart user buffer (%d)", ret); return ret;
}
*buf_obj = (void *)bo;
*buf_addr = gpu_addr;
return 0;
}
EXPORT_SYMBOL(isp_user_buffer_alloc);
/** * isp_user_buffer_free - free isp user buffer object (BO) * * @buf_obj: amdgpu isp user BO to free * * unpin and unref BO for isp internal use. * * This function is exported to allow the V4L2 isp device * external to drm device to free the isp user BO.
*/ void isp_user_buffer_free(void *buf_obj)
{
amdgpu_bo_free_isp_user(buf_obj);
}
EXPORT_SYMBOL(isp_user_buffer_free);
/** * isp_kernel_buffer_alloc - create kernel buffer object (BO) for isp * * @dev: isp device handle * @size: size for the new BO * @buf_obj: GPU BO handle to initialize * @gpu_addr: GPU addr of the pinned BO * @cpu_addr: CPU address mapping of BO * * Allocates and pins a kernel BO for internal isp firmware use. * * This function is exported to allow the V4L2 isp device * external to drm device to create and access the kernel BO. * * Returns: * 0 on success, negative error code otherwise.
*/ int isp_kernel_buffer_alloc(struct device *dev, u64 size, void **buf_obj, u64 *gpu_addr, void **cpu_addr)
{ struct platform_device *ispdev = to_platform_device(dev); struct amdgpu_bo **bo = (struct amdgpu_bo **)buf_obj; conststruct isp_platform_data *isp_pdata; struct amdgpu_device *adev; struct mfd_cell *mfd_cell; int ret;
if (WARN_ON(!ispdev)) return -ENODEV;
if (WARN_ON(!buf_obj)) return -EINVAL;
if (WARN_ON(!gpu_addr)) return -EINVAL;
if (WARN_ON(!cpu_addr)) return -EINVAL;
mfd_cell = &ispdev->mfd_cell[0]; if (!mfd_cell) return -ENODEV;
ret = is_valid_isp_device(ispdev->dev.parent, adev->dev); if (ret) return ret;
/* Ensure *bo is NULL so a new BO will be created */
*bo = NULL;
ret = amdgpu_bo_create_kernel(adev,
size,
ISP_MC_ADDR_ALIGN,
AMDGPU_GEM_DOMAIN_GTT,
bo,
gpu_addr,
cpu_addr); if (!cpu_addr || ret) {
drm_err(&adev->ddev, "failed to alloc gart kernel buffer (%d)", ret); return ret;
}
/** * isp_kernel_buffer_free - free isp kernel buffer object (BO) * * @buf_obj: amdgpu isp user BO to free * @gpu_addr: GPU addr of isp kernel BO * @cpu_addr: CPU addr of isp kernel BO * * unmaps and unpin a isp kernel BO. * * This function is exported to allow the V4L2 isp device * external to drm device to free the kernel BO.
*/ void isp_kernel_buffer_free(void **buf_obj, u64 *gpu_addr, void **cpu_addr)
{ struct amdgpu_bo **bo = (struct amdgpu_bo **)buf_obj;
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