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
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
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 	return 0;
65 }
66 
67 int
68 gf100_fb_init_page(struct nvkm_fb *fb)
69 {
70 	struct nvkm_device *device = fb->subdev.device;
71 	switch (fb->page) {
72 	case 16: nvkm_mask(device, 0x100c80, 0x00000001, 0x00000001); break;
73 	case 17: nvkm_mask(device, 0x100c80, 0x00000001, 0x00000000); break;
74 	default:
75 		return -EINVAL;
76 	}
77 	return 0;
78 }
79 
80 void
81 gf100_fb_sysmem_flush_page_init(struct nvkm_fb *fb)
82 {
83 	nvkm_wr32(fb->subdev.device, 0x100c10, fb->sysmem.flush_page_addr >> 8);
84 }
85 
86 void
87 gf100_fb_init(struct nvkm_fb *base)
88 {
89 	struct gf100_fb *fb = gf100_fb(base);
90 	struct nvkm_device *device = fb->base.subdev.device;
91 
92 	if (base->func->clkgate_pack) {
93 		nvkm_therm_clkgate_init(device->therm,
94 					base->func->clkgate_pack);
95 	}
96 }
97 
98 void *
99 gf100_fb_dtor(struct nvkm_fb *base)
100 {
101 	struct gf100_fb *fb = gf100_fb(base);
102 
103 	return fb;
104 }
105 
106 int
107 gf100_fb_new_(const struct nvkm_fb_func *func, struct nvkm_device *device,
108 	      enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb)
109 {
110 	struct gf100_fb *fb;
111 
112 	if (!(fb = kzalloc(sizeof(*fb), GFP_KERNEL)))
113 		return -ENOMEM;
114 	nvkm_fb_ctor(func, device, type, inst, &fb->base);
115 	*pfb = &fb->base;
116 
117 	return 0;
118 }
119 
120 static const struct nvkm_fb_func
121 gf100_fb = {
122 	.dtor = gf100_fb_dtor,
123 	.oneinit = gf100_fb_oneinit,
124 	.init = gf100_fb_init,
125 	.init_page = gf100_fb_init_page,
126 	.intr = gf100_fb_intr,
127 	.sysmem.flush_page_init = gf100_fb_sysmem_flush_page_init,
128 	.ram_new = gf100_ram_new,
129 	.default_bigpage = 17,
130 };
131 
132 int
133 gf100_fb_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb)
134 {
135 	return gf100_fb_new_(&gf100_fb, device, type, inst, pfb);
136 }
137