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