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
ast_mm_init(struct ast_private * ast)37 int 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
ast_mm_fini(struct ast_private * ast)60 void 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 }
70
