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#include "gf100.h"
25
26#include <core/device.h>
27
28extern const u8 gf100_pte_storage_type_map[256];
29
30bool
31gf100_fb_memtype_valid(struct nvkm_fb *pfb, u32 tile_flags)
32{
33	u8 memtype = (tile_flags & 0x0000ff00) >> 8;
34	return likely((gf100_pte_storage_type_map[memtype] != 0xff));
35}
36
37static void
38gf100_fb_intr(struct nvkm_subdev *subdev)
39{
40	struct gf100_fb_priv *priv = (void *)subdev;
41	u32 intr = nv_rd32(priv, 0x000100);
42	if (intr & 0x08000000) {
43		nv_debug(priv, "PFFB intr\n");
44		intr &= ~0x08000000;
45	}
46	if (intr & 0x00002000) {
47		nv_debug(priv, "PBFB intr\n");
48		intr &= ~0x00002000;
49	}
50}
51
52int
53gf100_fb_init(struct nvkm_object *object)
54{
55	struct gf100_fb_priv *priv = (void *)object;
56	int ret;
57
58	ret = nvkm_fb_init(&priv->base);
59	if (ret)
60		return ret;
61
62	if (priv->r100c10_page)
63		nv_wr32(priv, 0x100c10, priv->r100c10 >> 8);
64
65	nv_mask(priv, 0x100c80, 0x00000001, 0x00000000); /* 128KiB lpg */
66	return 0;
67}
68
69void
70gf100_fb_dtor(struct nvkm_object *object)
71{
72	struct nvkm_device *device = nv_device(object);
73	struct gf100_fb_priv *priv = (void *)object;
74
75	if (priv->r100c10_page) {
76		dma_unmap_page(nv_device_base(device), priv->r100c10, PAGE_SIZE,
77			       DMA_BIDIRECTIONAL);
78		__free_page(priv->r100c10_page);
79	}
80
81	nvkm_fb_destroy(&priv->base);
82}
83
84int
85gf100_fb_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
86	      struct nvkm_oclass *oclass, void *data, u32 size,
87	      struct nvkm_object **pobject)
88{
89	struct nvkm_device *device = nv_device(parent);
90	struct gf100_fb_priv *priv;
91	int ret;
92
93	ret = nvkm_fb_create(parent, engine, oclass, &priv);
94	*pobject = nv_object(priv);
95	if (ret)
96		return ret;
97
98	priv->r100c10_page = alloc_page(GFP_KERNEL | __GFP_ZERO);
99	if (priv->r100c10_page) {
100		priv->r100c10 = dma_map_page(nv_device_base(device),
101					     priv->r100c10_page, 0, PAGE_SIZE,
102					     DMA_BIDIRECTIONAL);
103		if (dma_mapping_error(nv_device_base(device), priv->r100c10))
104			return -EFAULT;
105	}
106
107	nv_subdev(priv)->intr = gf100_fb_intr;
108	return 0;
109}
110
111struct nvkm_oclass *
112gf100_fb_oclass = &(struct nvkm_fb_impl) {
113	.base.handle = NV_SUBDEV(FB, 0xc0),
114	.base.ofuncs = &(struct nvkm_ofuncs) {
115		.ctor = gf100_fb_ctor,
116		.dtor = gf100_fb_dtor,
117		.init = gf100_fb_init,
118		.fini = _nvkm_fb_fini,
119	},
120	.memtype = gf100_fb_memtype_valid,
121	.ram = &gf100_ram_oclass,
122}.base;
123