]> Pileus Git - ~andy/linux/blob - drivers/gpu/drm/nouveau/core/subdev/fb/nvc0.c
Merge tag 'drm-intel-fixes-2013-11-07' of git://people.freedesktop.org/~danvet/drm...
[~andy/linux] / drivers / gpu / drm / nouveau / core / subdev / fb / nvc0.c
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 "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice shall be included in
12  * all copies or substantial portions of the Software.
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20  * OTHER DEALINGS IN THE SOFTWARE.
21  *
22  * Authors: Ben Skeggs
23  */
24
25 #include "nvc0.h"
26
27 extern const u8 nvc0_pte_storage_type_map[256];
28
29 bool
30 nvc0_fb_memtype_valid(struct nouveau_fb *pfb, u32 tile_flags)
31 {
32         u8 memtype = (tile_flags & 0x0000ff00) >> 8;
33         return likely((nvc0_pte_storage_type_map[memtype] != 0xff));
34 }
35
36 int
37 nvc0_fb_init(struct nouveau_object *object)
38 {
39         struct nvc0_fb_priv *priv = (void *)object;
40         int ret;
41
42         ret = nouveau_fb_init(&priv->base);
43         if (ret)
44                 return ret;
45
46         if (priv->r100c10_page)
47                 nv_wr32(priv, 0x100c10, priv->r100c10 >> 8);
48         return 0;
49 }
50
51 void
52 nvc0_fb_dtor(struct nouveau_object *object)
53 {
54         struct nouveau_device *device = nv_device(object);
55         struct nvc0_fb_priv *priv = (void *)object;
56
57         if (priv->r100c10_page) {
58                 pci_unmap_page(device->pdev, priv->r100c10, PAGE_SIZE,
59                                PCI_DMA_BIDIRECTIONAL);
60                 __free_page(priv->r100c10_page);
61         }
62
63         nouveau_fb_destroy(&priv->base);
64 }
65
66 int
67 nvc0_fb_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
68              struct nouveau_oclass *oclass, void *data, u32 size,
69              struct nouveau_object **pobject)
70 {
71         struct nouveau_device *device = nv_device(parent);
72         struct nvc0_fb_priv *priv;
73         int ret;
74
75         ret = nouveau_fb_create(parent, engine, oclass, &priv);
76         *pobject = nv_object(priv);
77         if (ret)
78                 return ret;
79
80         priv->r100c10_page = alloc_page(GFP_KERNEL | __GFP_ZERO);
81         if (priv->r100c10_page) {
82                 priv->r100c10 = pci_map_page(device->pdev, priv->r100c10_page,
83                                              0, PAGE_SIZE,
84                                              PCI_DMA_BIDIRECTIONAL);
85                 if (pci_dma_mapping_error(device->pdev, priv->r100c10))
86                         return -EFAULT;
87         }
88
89         return 0;
90 }
91
92 struct nouveau_oclass *
93 nvc0_fb_oclass = &(struct nouveau_fb_impl) {
94         .base.handle = NV_SUBDEV(FB, 0xc0),
95         .base.ofuncs = &(struct nouveau_ofuncs) {
96                 .ctor = nvc0_fb_ctor,
97                 .dtor = nvc0_fb_dtor,
98                 .init = nvc0_fb_init,
99                 .fini = _nouveau_fb_fini,
100         },
101         .memtype = nvc0_fb_memtype_valid,
102         .ram = &nvc0_ram_oclass,
103 }.base;