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#include "ram.h"
26
27extern const u8 gf100_pte_storage_type_map[256];
28
29bool
30gf100_fb_memtype_valid(struct nvkm_fb *fb, u32 tile_flags)
31{
32	u8 memtype = (tile_flags & 0x0000ff00) >> 8;
33	return likely((gf100_pte_storage_type_map[memtype] != 0xff));
34}
35
36void
37gf100_fb_intr(struct nvkm_fb *base)
38{
39	struct gf100_fb *fb = gf100_fb(base);
40	struct nvkm_subdev *subdev = &fb->base.subdev;
41	struct nvkm_device *device = subdev->device;
42	u32 intr = nvkm_rd32(device, 0x000100);
43	if (intr & 0x08000000)
44		nvkm_debug(subdev, "PFFB intr\n");
45	if (intr & 0x00002000)
46		nvkm_debug(subdev, "PBFB intr\n");
47}
48
49void
50gf100_fb_init(struct nvkm_fb *base)
51{
52	struct gf100_fb *fb = gf100_fb(base);
53	struct nvkm_device *device = fb->base.subdev.device;
54
55	if (fb->r100c10_page)
56		nvkm_wr32(device, 0x100c10, fb->r100c10 >> 8);
57
58	nvkm_mask(device, 0x100c80, 0x00000001, 0x00000000); /* 128KiB lpg */
59}
60
61void *
62gf100_fb_dtor(struct nvkm_fb *base)
63{
64	struct gf100_fb *fb = gf100_fb(base);
65	struct nvkm_device *device = fb->base.subdev.device;
66
67	if (fb->r100c10_page) {
68		dma_unmap_page(device->dev, fb->r100c10, PAGE_SIZE,
69			       DMA_BIDIRECTIONAL);
70		__free_page(fb->r100c10_page);
71	}
72
73	return fb;
74}
75
76int
77gf100_fb_new_(const struct nvkm_fb_func *func, struct nvkm_device *device,
78	      int index, struct nvkm_fb **pfb)
79{
80	struct gf100_fb *fb;
81
82	if (!(fb = kzalloc(sizeof(*fb), GFP_KERNEL)))
83		return -ENOMEM;
84	nvkm_fb_ctor(func, device, index, &fb->base);
85	*pfb = &fb->base;
86
87	fb->r100c10_page = alloc_page(GFP_KERNEL | __GFP_ZERO);
88	if (fb->r100c10_page) {
89		fb->r100c10 = dma_map_page(device->dev, fb->r100c10_page, 0,
90					   PAGE_SIZE, DMA_BIDIRECTIONAL);
91		if (dma_mapping_error(device->dev, fb->r100c10))
92			return -EFAULT;
93	}
94
95	return 0;
96}
97
98static const struct nvkm_fb_func
99gf100_fb = {
100	.dtor = gf100_fb_dtor,
101	.init = gf100_fb_init,
102	.intr = gf100_fb_intr,
103	.ram_new = gf100_ram_new,
104	.memtype_valid = gf100_fb_memtype_valid,
105};
106
107int
108gf100_fb_new(struct nvkm_device *device, int index, struct nvkm_fb **pfb)
109{
110	return gf100_fb_new_(&gf100_fb, device, index, pfb);
111}
112