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2c51a66016
The double-buffered cursor image is currently stored in video memory by creating two BOs and pinning them to VRAM. The exact location is chosen by VRAM helpers. The pinned cursor BOs can conflict with framebuffer BOs and prevent the primary plane from displaying its framebuffer. As a first step to solving this problem, we reserve dedicated space at the high end of the video memory for the cursor images. As the amount of video memory now differs from the amount of available framebuffer memory, size tests are adapted accordingly. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Gerd Hoffmann <kraxel@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190927091301.10574-7-tzimmermann@suse.de
71 lines
2.1 KiB
C
71 lines
2.1 KiB
C
/*
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* Copyright 2012 Red Hat 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
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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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 NON-INFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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* USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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*/
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/*
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* Authors: Dave Airlie <airlied@redhat.com>
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*/
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#include <drm/drm_pci.h>
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#include "mgag200_drv.h"
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int mgag200_mm_init(struct mga_device *mdev)
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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 = mdev->dev;
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vmm = drm_vram_helper_alloc_mm(dev, pci_resource_start(dev->pdev, 0),
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mdev->mc.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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arch_io_reserve_memtype_wc(pci_resource_start(dev->pdev, 0),
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pci_resource_len(dev->pdev, 0));
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mdev->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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mdev->vram_fb_available = mdev->mc.vram_size;
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return 0;
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}
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void mgag200_mm_fini(struct mga_device *mdev)
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{
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struct drm_device *dev = mdev->dev;
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mdev->vram_fb_available = 0;
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drm_vram_helper_release_mm(dev);
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arch_io_free_memtype_wc(pci_resource_start(dev->pdev, 0),
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pci_resource_len(dev->pdev, 0));
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arch_phys_wc_del(mdev->fb_mtrr);
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mdev->fb_mtrr = 0;
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}
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