5c7dd7acc3
repo: https://github.com/T-head-Semi/linux commit: b1313fe517ca3703119dcc99ef3bbf75ab42bcfb Change-Id: I6cbb35294024ea3a66140e311f4bb705fd7fd626
37 lines
915 B
C
37 lines
915 B
C
// SPDX-License-Identifier: MIT
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/*
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* Copyright (C) 2013-2017 Oracle Corporation
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* This file is based on ast_ttm.c
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* Copyright 2012 Red Hat Inc.
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* Authors: Dave Airlie <airlied@redhat.com>
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* Michael Thayer <michael.thayer@oracle.com>
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*/
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#include <linux/pci.h>
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#include <drm/drm_file.h>
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#include "vbox_drv.h"
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int vbox_mm_init(struct vbox_private *vbox)
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{
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struct drm_vram_mm *vmm;
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int ret;
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struct drm_device *dev = &vbox->ddev;
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vmm = drm_vram_helper_alloc_mm(dev, pci_resource_start(dev->pdev, 0),
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vbox->available_vram_size);
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if (IS_ERR(vmm)) {
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ret = PTR_ERR(vmm);
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DRM_ERROR("Error initializing VRAM MM; %d\n", ret);
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return ret;
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}
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vbox->fb_mtrr = arch_phys_wc_add(pci_resource_start(dev->pdev, 0),
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pci_resource_len(dev->pdev, 0));
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return 0;
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}
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void vbox_mm_fini(struct vbox_private *vbox)
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{
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arch_phys_wc_del(vbox->fb_mtrr);
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drm_vram_helper_release_mm(&vbox->ddev);
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}
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