1/*
 2 * Copyright 2012 Red Hat Inc.
 3 *
 4 * Permission is hereby granted, free of charge, to any person obtaining a
 5 * copy of this software and associated documentation files (the
 6 * "Software"), to deal in the Software without restriction, including
 7 * without limitation the rights to use, copy, modify, merge, publish,
 8 * distribute, sub license, and/or sell copies of the Software, and to
 9 * permit persons to whom the Software is furnished to do so, subject to
10 * the following conditions:
11 *
12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
13 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
14 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
15 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
16 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
17 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
18 * USE OR OTHER DEALINGS IN THE SOFTWARE.
19 *
20 * The above copyright notice and this permission notice (including the
21 * next paragraph) shall be included in all copies or substantial portions
22 * of the Software.
23 *
24 */
25/*
26 * Authors: Dave Airlie <airlied@redhat.com>
27 */
28
29#include <linux/pci.h>
30
31#include <drm/drm_print.h>
32#include <drm/drm_gem_vram_helper.h>
33#include <drm/drm_vram_mm_helper.h>
34
35#include "ast_drv.h"
36
37int ast_mm_init(struct ast_private *ast)
38{
39	struct drm_vram_mm *vmm;
40	int ret;
41	struct drm_device *dev = ast->dev;
42
43	vmm = drm_vram_helper_alloc_mm(
44		dev, pci_resource_start(dev->pdev, 0),
45		ast->vram_size, &drm_gem_vram_mm_funcs);
46	if (IS_ERR(vmm)) {
47		ret = PTR_ERR(vmm);
48		DRM_ERROR("Error initializing VRAM MM; %d\n", ret);
49		return ret;
50	}
51
52	arch_io_reserve_memtype_wc(pci_resource_start(dev->pdev, 0),
53				   pci_resource_len(dev->pdev, 0));
54	ast->fb_mtrr = arch_phys_wc_add(pci_resource_start(dev->pdev, 0),
55					pci_resource_len(dev->pdev, 0));
56
57	return 0;
58}
59
60void ast_mm_fini(struct ast_private *ast)
61{
62	struct drm_device *dev = ast->dev;
63
64	drm_vram_helper_release_mm(dev);
65
66	arch_phys_wc_del(ast->fb_mtrr);
67	arch_io_free_memtype_wc(pci_resource_start(dev->pdev, 0),
68				pci_resource_len(dev->pdev, 0));
69}