tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
drm/amdxcp: add platform device driver for amdxcp
Add platform device driver for amdxcp to support
amdgpu spatial partition.
-v2: fix build warning
Signed-off-by: James Zhu <James.Zhu@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
authored by
James Zhu
and committed by
Alex Deucher
3b60b70d
3034983d
+165
+1
drivers/gpu/drm/Makefile
+1
drivers/gpu/drm/Makefile
···
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obj-$(CONFIG_DRM_SCHED) += scheduler/
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obj-$(CONFIG_DRM_RADEON)+= radeon/
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obj-$(CONFIG_DRM_AMDGPU)+= amd/amdgpu/
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obj-$(CONFIG_DRM_AMDGPU)+= amd/amdxcp/
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obj-$(CONFIG_DRM_I915) += i915/
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obj-$(CONFIG_DRM_KMB_DISPLAY) += kmb/
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obj-$(CONFIG_DRM_MGAG200) += mgag200/
+25
drivers/gpu/drm/amd/amdxcp/Makefile
+25
drivers/gpu/drm/amd/amdxcp/Makefile
···
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#
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# Copyright 2023 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-y := amdgpu_xcp_drv.o
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obj-$(CONFIG_DRM_AMDGPU) += amdgpu_xcp_drv.o
+110
drivers/gpu/drm/amd/amdxcp/amdgpu_xcp_drv.c
+110
drivers/gpu/drm/amd/amdxcp/amdgpu_xcp_drv.c
···
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/*
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* Copyright 2023 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 <linux/init.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <drm/drm_drv.h>
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#include "amdgpu_xcp_drv.h"
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#define MAX_XCP_PLATFORM_DEVICE 64
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struct xcp_device {
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struct drm_device drm;
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struct platform_device *pdev;
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};
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static const struct drm_driver amdgpu_xcp_driver = {
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.driver_features = DRIVER_GEM | DRIVER_RENDER,
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.name = "amdgpu_xcp_drv",
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.major = 1,
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.minor = 0,
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};
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static int pdev_num;
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static struct xcp_device *xcp_dev[MAX_XCP_PLATFORM_DEVICE];
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int amdgpu_xcp_drm_dev_alloc(struct drm_device **ddev)
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{
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struct platform_device *pdev;
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struct xcp_device *pxcp_dev;
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int ret;
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if (pdev_num >= MAX_XCP_PLATFORM_DEVICE)
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return -ENODEV;
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pdev = platform_device_register_simple("amdgpu_xcp", pdev_num, NULL, 0);
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if (IS_ERR(pdev))
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return PTR_ERR(pdev);
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if (!devres_open_group(&pdev->dev, NULL, GFP_KERNEL)) {
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ret = -ENOMEM;
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goto out_unregister;
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}
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pxcp_dev = devm_drm_dev_alloc(&pdev->dev, &amdgpu_xcp_driver, struct xcp_device, drm);
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if (IS_ERR(pxcp_dev)) {
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ret = PTR_ERR(pxcp_dev);
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goto out_devres;
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}
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xcp_dev[pdev_num] = pxcp_dev;
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xcp_dev[pdev_num]->pdev = pdev;
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*ddev = &pxcp_dev->drm;
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pdev_num++;
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return 0;
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out_devres:
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devres_release_group(&pdev->dev, NULL);
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out_unregister:
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platform_device_unregister(pdev);
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return ret;
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}
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EXPORT_SYMBOL(amdgpu_xcp_drm_dev_alloc);
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void amdgpu_xcp_drv_release(void)
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{
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for (--pdev_num; pdev_num >= 0; --pdev_num) {
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devres_release_group(&xcp_dev[pdev_num]->pdev->dev, NULL);
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platform_device_unregister(xcp_dev[pdev_num]->pdev);
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xcp_dev[pdev_num]->pdev = NULL;
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xcp_dev[pdev_num] = NULL;
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}
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pdev_num = 0;
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}
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EXPORT_SYMBOL(amdgpu_xcp_drv_release);
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static void __exit amdgpu_xcp_drv_exit(void)
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{
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amdgpu_xcp_drv_release();
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}
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module_exit(amdgpu_xcp_drv_exit);
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MODULE_AUTHOR("AMD linux driver team");
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MODULE_DESCRIPTION("AMD XCP PLATFORM DEVICES");
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MODULE_LICENSE("GPL and additional rights");
+29
drivers/gpu/drm/amd/amdxcp/amdgpu_xcp_drv.h
+29
drivers/gpu/drm/amd/amdxcp/amdgpu_xcp_drv.h
···
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/*
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* Copyright 2023 Advanced Micro Devices, Inc.
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+
*
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+
* Permission is hereby granted, free of charge, to any person obtaining a
5
+
* copy of this software and associated documentation files (the "Software"),
6
+
* to deal in the Software without restriction, including without limitation
7
+
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
8
+
* and/or sell copies of the Software, and to permit persons to whom the
9
+
* Software is furnished to do so, subject to the following conditions:
10
+
*
11
+
* The above copyright notice and this permission notice shall be included in
12
+
* all copies or substantial portions of the Software.
13
+
*
14
+
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15
+
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16
+
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17
+
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18
+
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19
+
* 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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#ifndef _AMDGPU_XCP_DRV_H_
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#define _AMDGPU_XCP_DRV_H_
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int amdgpu_xcp_drm_dev_alloc(struct drm_device **ddev);
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void amdgpu_xcp_drv_release(void);
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#endif /* _AMDGPU_XCP_DRV_H_ */