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
27 #include <core/memory.h>
28 #include <core/option.h>
29 #include <subdev/therm.h>
30
31 void
gf100_fb_intr(struct nvkm_fb * base)32 gf100_fb_intr(struct nvkm_fb *base)
33 {
34 struct gf100_fb *fb = gf100_fb(base);
35 struct nvkm_subdev *subdev = &fb->base.subdev;
36 struct nvkm_device *device = subdev->device;
37 u32 intr = nvkm_rd32(device, 0x000100);
38 if (intr & 0x08000000)
39 nvkm_debug(subdev, "PFFB intr\n");
40 if (intr & 0x00002000)
41 nvkm_debug(subdev, "PBFB intr\n");
42 }
43
44 int
gf100_fb_oneinit(struct nvkm_fb * base)45 gf100_fb_oneinit(struct nvkm_fb *base)
46 {
47 struct gf100_fb *fb = gf100_fb(base);
48 struct nvkm_device *device = fb->base.subdev.device;
49 int ret, size = 1 << (fb->base.page ? fb->base.page : 17);
50
51 size = nvkm_longopt(device->cfgopt, "MmuDebugBufferSize", size);
52 size = max(size, 0x1000);
53
54 ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, size, 0x1000,
55 true, &fb->base.mmu_rd);
56 if (ret)
57 return ret;
58
59 ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, size, 0x1000,
60 true, &fb->base.mmu_wr);
61 if (ret)
62 return ret;
63
64 fb->r100c10_page = alloc_page(GFP_KERNEL | __GFP_ZERO);
65 if (fb->r100c10_page) {
66 fb->r100c10 = dma_map_page(device->dev, fb->r100c10_page, 0,
67 PAGE_SIZE, DMA_BIDIRECTIONAL);
68 if (dma_mapping_error(device->dev, fb->r100c10))
69 return -EFAULT;
70 }
71
72 return 0;
73 }
74
75 int
gf100_fb_init_page(struct nvkm_fb * fb)76 gf100_fb_init_page(struct nvkm_fb *fb)
77 {
78 struct nvkm_device *device = fb->subdev.device;
79 switch (fb->page) {
80 case 16: nvkm_mask(device, 0x100c80, 0x00000001, 0x00000001); break;
81 case 17: nvkm_mask(device, 0x100c80, 0x00000001, 0x00000000); break;
82 default:
83 return -EINVAL;
84 }
85 return 0;
86 }
87
88 void
gf100_fb_init(struct nvkm_fb * base)89 gf100_fb_init(struct nvkm_fb *base)
90 {
91 struct gf100_fb *fb = gf100_fb(base);
92 struct nvkm_device *device = fb->base.subdev.device;
93
94 if (fb->r100c10_page)
95 nvkm_wr32(device, 0x100c10, fb->r100c10 >> 8);
96
97 if (base->func->clkgate_pack) {
98 nvkm_therm_clkgate_init(device->therm,
99 base->func->clkgate_pack);
100 }
101 }
102
103 void *
gf100_fb_dtor(struct nvkm_fb * base)104 gf100_fb_dtor(struct nvkm_fb *base)
105 {
106 struct gf100_fb *fb = gf100_fb(base);
107 struct nvkm_device *device = fb->base.subdev.device;
108
109 if (fb->r100c10_page) {
110 dma_unmap_page(device->dev, fb->r100c10, PAGE_SIZE,
111 DMA_BIDIRECTIONAL);
112 __free_page(fb->r100c10_page);
113 }
114
115 return fb;
116 }
117
118 int
gf100_fb_new_(const struct nvkm_fb_func * func,struct nvkm_device * device,int index,struct nvkm_fb ** pfb)119 gf100_fb_new_(const struct nvkm_fb_func *func, struct nvkm_device *device,
120 int index, struct nvkm_fb **pfb)
121 {
122 struct gf100_fb *fb;
123
124 if (!(fb = kzalloc(sizeof(*fb), GFP_KERNEL)))
125 return -ENOMEM;
126 nvkm_fb_ctor(func, device, index, &fb->base);
127 *pfb = &fb->base;
128
129 return 0;
130 }
131
132 static const struct nvkm_fb_func
133 gf100_fb = {
134 .dtor = gf100_fb_dtor,
135 .oneinit = gf100_fb_oneinit,
136 .init = gf100_fb_init,
137 .init_page = gf100_fb_init_page,
138 .intr = gf100_fb_intr,
139 .ram_new = gf100_ram_new,
140 .default_bigpage = 17,
141 };
142
143 int
gf100_fb_new(struct nvkm_device * device,int index,struct nvkm_fb ** pfb)144 gf100_fb_new(struct nvkm_device *device, int index, struct nvkm_fb **pfb)
145 {
146 return gf100_fb_new_(&gf100_fb, device, index, pfb);
147 }
148
