diff options
Diffstat (limited to 'drivers/gpu/drm/mgag200/mgag200_mm.c')
| -rw-r--r-- | drivers/gpu/drm/mgag200/mgag200_mm.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/drivers/gpu/drm/mgag200/mgag200_mm.c b/drivers/gpu/drm/mgag200/mgag200_mm.c new file mode 100644 index 000000000000..a683642fe468 --- /dev/null +++ b/drivers/gpu/drm/mgag200/mgag200_mm.c @@ -0,0 +1,72 @@ +/* + * Copyright 2012 Red Hat Inc. + * + * 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. + * + */ +/* + * Authors: Dave Airlie <airlied@redhat.com> + */ + +#include <linux/pci.h> + +#include "mgag200_drv.h" + +int mgag200_mm_init(struct mga_device *mdev) +{ + struct drm_device *dev = mdev->dev; + int ret; + + arch_io_reserve_memtype_wc(pci_resource_start(dev->pdev, 0), + pci_resource_len(dev->pdev, 0)); + + mdev->fb_mtrr = arch_phys_wc_add(pci_resource_start(dev->pdev, 0), + pci_resource_len(dev->pdev, 0)); + + mdev->vram = ioremap(pci_resource_start(dev->pdev, 0), + pci_resource_len(dev->pdev, 0)); + if (!mdev->vram) { + ret = -ENOMEM; + goto err_arch_phys_wc_del; + } + + mdev->vram_fb_available = mdev->mc.vram_size; + + return 0; + +err_arch_phys_wc_del: + arch_phys_wc_del(mdev->fb_mtrr); + arch_io_free_memtype_wc(pci_resource_start(dev->pdev, 0), + pci_resource_len(dev->pdev, 0)); + return ret; +} + +void mgag200_mm_fini(struct mga_device *mdev) +{ + struct drm_device *dev = mdev->dev; + + mdev->vram_fb_available = 0; + iounmap(mdev->vram); + arch_io_free_memtype_wc(pci_resource_start(dev->pdev, 0), + pci_resource_len(dev->pdev, 0)); + arch_phys_wc_del(mdev->fb_mtrr); + mdev->fb_mtrr = 0; +} |