gf100.c 3.2 KB
Newer Older
1
/*
2
 * Copyright 2012 Red Hat Inc.
3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * Authors: Ben Skeggs
 */
24
#include "gf100.h"
25
#include "ram.h"
26

27
extern const u8 gf100_pte_storage_type_map[256];
28

29
bool
B
Ben Skeggs 已提交
30
gf100_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

36 37
void
gf100_fb_intr(struct nvkm_fb *base)
38
{
39 40
	struct gf100_fb *fb = gf100_fb(base);
	struct nvkm_subdev *subdev = &fb->base.subdev;
41 42
	struct nvkm_device *device = subdev->device;
	u32 intr = nvkm_rd32(device, 0x000100);
B
Ben Skeggs 已提交
43
	if (intr & 0x08000000)
44
		nvkm_debug(subdev, "PFFB intr\n");
B
Ben Skeggs 已提交
45
	if (intr & 0x00002000)
46
		nvkm_debug(subdev, "PBFB intr\n");
47 48
}

49 50
void
gf100_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

B
Ben Skeggs 已提交
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
}

61 62
void *
gf100_fb_dtor(struct nvkm_fb *base)
63
{
64 65
	struct gf100_fb *fb = gf100_fb(base);
	struct nvkm_device *device = fb->base.subdev.device;
66

B
Ben Skeggs 已提交
67 68
	if (fb->r100c10_page) {
		dma_unmap_page(nv_device_base(device), fb->r100c10, PAGE_SIZE,
69
			       DMA_BIDIRECTIONAL);
B
Ben Skeggs 已提交
70
		__free_page(fb->r100c10_page);
71 72
	}

73
	return fb;
74 75
}

76
int
77 78
gf100_fb_new_(const struct nvkm_fb_func *func, struct nvkm_device *device,
	      int index, struct nvkm_fb **pfb)
79
{
B
Ben Skeggs 已提交
80
	struct gf100_fb *fb;
81

82 83 84 85
	if (!(fb = kzalloc(sizeof(*fb), GFP_KERNEL)))
		return -ENOMEM;
	nvkm_fb_ctor(func, device, index, &fb->base);
	*pfb = &fb->base;
86

B
Ben Skeggs 已提交
87 88 89 90
	fb->r100c10_page = alloc_page(GFP_KERNEL | __GFP_ZERO);
	if (fb->r100c10_page) {
		fb->r100c10 = dma_map_page(nv_device_base(device),
					     fb->r100c10_page, 0, PAGE_SIZE,
91
					     DMA_BIDIRECTIONAL);
B
Ben Skeggs 已提交
92
		if (dma_mapping_error(nv_device_base(device), fb->r100c10))
93 94
			return -EFAULT;
	}
95

96
	return 0;
97
}
98

99 100 101 102 103
static const struct nvkm_fb_func
gf100_fb = {
	.dtor = gf100_fb_dtor,
	.init = gf100_fb_init,
	.intr = gf100_fb_intr,
104
	.ram_new = gf100_ram_new,
105 106 107 108 109 110 111 112
	.memtype_valid = gf100_fb_memtype_valid,
};

int
gf100_fb_new(struct nvkm_device *device, int index, struct nvkm_fb **pfb)
{
	return gf100_fb_new_(&gf100_fb, device, index, pfb);
}