1 /*
2 * Copyright 2013 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 "nv50.h"
25
26 #include <subdev/bios.h>
27 #include <subdev/bios/dcb.h>
28 #include <subdev/bios/disp.h>
29 #include <subdev/bios/init.h>
30 #include <subdev/bios/pll.h>
31 #include <subdev/clk/pll.h>
32 #include <subdev/vga.h>
33
34 int
nv50_devinit_pll_set(struct nvkm_devinit * init,u32 type,u32 freq)35 nv50_devinit_pll_set(struct nvkm_devinit *init, u32 type, u32 freq)
36 {
37 struct nvkm_subdev *subdev = &init->subdev;
38 struct nvkm_device *device = subdev->device;
39 struct nvkm_bios *bios = device->bios;
40 struct nvbios_pll info;
41 int N1, M1, N2, M2, P;
42 int ret;
43
44 ret = nvbios_pll_parse(bios, type, &info);
45 if (ret) {
46 nvkm_error(subdev, "failed to retrieve pll data, %d\n", ret);
47 return ret;
48 }
49
50 ret = nv04_pll_calc(subdev, &info, freq, &N1, &M1, &N2, &M2, &P);
51 if (!ret) {
52 nvkm_error(subdev, "failed pll calculation\n");
53 return -EINVAL;
54 }
55
56 switch (info.type) {
57 case PLL_VPLL0:
58 case PLL_VPLL1:
59 nvkm_wr32(device, info.reg + 0, 0x10000611);
60 nvkm_mask(device, info.reg + 4, 0x00ff00ff, (M1 << 16) | N1);
61 nvkm_mask(device, info.reg + 8, 0x7fff00ff, (P << 28) |
62 (M2 << 16) | N2);
63 break;
64 case PLL_MEMORY:
65 nvkm_mask(device, info.reg + 0, 0x01ff0000,
66 (P << 22) |
67 (info.bias_p << 19) |
68 (P << 16));
69 nvkm_wr32(device, info.reg + 4, (N1 << 8) | M1);
70 break;
71 default:
72 nvkm_mask(device, info.reg + 0, 0x00070000, (P << 16));
73 nvkm_wr32(device, info.reg + 4, (N1 << 8) | M1);
74 break;
75 }
76
77 return 0;
78 }
79
80 static void
nv50_devinit_disable(struct nvkm_devinit * init)81 nv50_devinit_disable(struct nvkm_devinit *init)
82 {
83 struct nvkm_device *device = init->subdev.device;
84 u32 r001540 = nvkm_rd32(device, 0x001540);
85
86 if (!(r001540 & 0x40000000))
87 nvkm_subdev_disable(device, NVKM_ENGINE_MPEG, 0);
88 }
89
90 void
nv50_devinit_preinit(struct nvkm_devinit * base)91 nv50_devinit_preinit(struct nvkm_devinit *base)
92 {
93 struct nvkm_subdev *subdev = &base->subdev;
94 struct nvkm_device *device = subdev->device;
95
96 /* our heuristics can't detect whether the board has had its
97 * devinit scripts executed or not if the display engine is
98 * missing, assume it's a secondary gpu which requires post
99 */
100 if (!base->post) {
101 nvkm_devinit_disable(base);
102 if (!device->disp)
103 base->post = true;
104 }
105
106 /* magic to detect whether or not x86 vbios code has executed
107 * the devinit scripts to initialise the board
108 */
109 if (!base->post) {
110 if (!nvkm_rdvgac(device, 0, 0x00) &&
111 !nvkm_rdvgac(device, 0, 0x1a)) {
112 nvkm_debug(subdev, "adaptor not initialised\n");
113 base->post = true;
114 }
115 }
116 }
117
118 void
nv50_devinit_init(struct nvkm_devinit * base)119 nv50_devinit_init(struct nvkm_devinit *base)
120 {
121 struct nv50_devinit *init = nv50_devinit(base);
122 struct nvkm_subdev *subdev = &init->base.subdev;
123 struct nvkm_device *device = subdev->device;
124 struct nvkm_bios *bios = device->bios;
125 struct nvbios_outp info;
126 struct dcb_output outp;
127 u8 ver = 0xff, hdr, cnt, len;
128 int i = 0;
129
130 /* if we ran the init tables, we have to execute the first script
131 * pointer of each dcb entry's display encoder table in order
132 * to properly initialise each encoder.
133 */
134 while (init->base.post && dcb_outp_parse(bios, i, &ver, &hdr, &outp)) {
135 if (nvbios_outp_match(bios, outp.hasht, outp.hashm,
136 &ver, &hdr, &cnt, &len, &info)) {
137 nvbios_init(subdev, info.script[0],
138 init.outp = &outp;
139 init.or = ffs(outp.or) - 1;
140 init.link = outp.sorconf.link == 2;
141 );
142 }
143 i++;
144 }
145 }
146
147 int
nv50_devinit_new_(const struct nvkm_devinit_func * func,struct nvkm_device * device,enum nvkm_subdev_type type,int inst,struct nvkm_devinit ** pinit)148 nv50_devinit_new_(const struct nvkm_devinit_func *func, struct nvkm_device *device,
149 enum nvkm_subdev_type type, int inst, struct nvkm_devinit **pinit)
150 {
151 struct nv50_devinit *init;
152
153 if (!(init = kzalloc(sizeof(*init), GFP_KERNEL)))
154 return -ENOMEM;
155 *pinit = &init->base;
156
157 nvkm_devinit_ctor(func, device, type, inst, &init->base);
158 return 0;
159 }
160
161 static const struct nvkm_devinit_func
162 nv50_devinit = {
163 .preinit = nv50_devinit_preinit,
164 .init = nv50_devinit_init,
165 .post = nv04_devinit_post,
166 .pll_set = nv50_devinit_pll_set,
167 .disable = nv50_devinit_disable,
168 };
169
170 int
nv50_devinit_new(struct nvkm_device * device,enum nvkm_subdev_type type,int inst,struct nvkm_devinit ** pinit)171 nv50_devinit_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
172 struct nvkm_devinit **pinit)
173 {
174 return nv50_devinit_new_(&nv50_devinit, device, type, inst, pinit);
175 }
176