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git.proxmox.com Git - mirror_ubuntu-jammy-kernel.git/blob - drivers/gpu/drm/nouveau/nvkm/subdev/bios/dp.c
2 * Copyright 2012 Red Hat Inc.
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:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
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.
24 #include <subdev/bios.h>
25 #include <subdev/bios/bit.h>
26 #include <subdev/bios/dp.h>
29 nvbios_dp_table(struct nvkm_bios
*bios
, u8
*ver
, u8
*hdr
, u8
*cnt
, u8
*len
)
33 if (!bit_entry(bios
, 'd', &d
)) {
34 if (d
.version
== 1 && d
.length
>= 2) {
35 u16 data
= nvbios_rd16(bios
, d
.offset
);
37 *ver
= nvbios_rd08(bios
, data
+ 0x00);
45 *hdr
= nvbios_rd08(bios
, data
+ 0x01);
46 *len
= nvbios_rd08(bios
, data
+ 0x02);
47 *cnt
= nvbios_rd08(bios
, data
+ 0x03);
60 nvbios_dpout_entry(struct nvkm_bios
*bios
, u8 idx
,
61 u8
*ver
, u8
*hdr
, u8
*cnt
, u8
*len
)
63 u16 data
= nvbios_dp_table(bios
, ver
, hdr
, cnt
, len
);
64 if (data
&& idx
< *cnt
) {
65 u16 outp
= nvbios_rd16(bios
, data
+ *hdr
+ idx
* *len
);
66 switch (*ver
* !!outp
) {
70 *hdr
= nvbios_rd08(bios
, data
+ 0x04);
71 *len
= nvbios_rd08(bios
, data
+ 0x05);
72 *cnt
= nvbios_rd08(bios
, outp
+ 0x04);
77 *hdr
= nvbios_rd08(bios
, data
+ 0x04);
91 nvbios_dpout_parse(struct nvkm_bios
*bios
, u8 idx
,
92 u8
*ver
, u8
*hdr
, u8
*cnt
, u8
*len
,
93 struct nvbios_dpout
*info
)
95 u16 data
= nvbios_dpout_entry(bios
, idx
, ver
, hdr
, cnt
, len
);
96 memset(info
, 0x00, sizeof(*info
));
98 info
->type
= nvbios_rd16(bios
, data
+ 0x00);
99 info
->mask
= nvbios_rd16(bios
, data
+ 0x02);
102 info
->mask
|= 0x00c0; /* match any link */
106 info
->flags
= nvbios_rd08(bios
, data
+ 0x05);
107 info
->script
[0] = nvbios_rd16(bios
, data
+ 0x06);
108 info
->script
[1] = nvbios_rd16(bios
, data
+ 0x08);
110 info
->lnkcmp
= nvbios_rd16(bios
, data
+ 0x0a);
112 info
->script
[2] = nvbios_rd16(bios
, data
+ 0x0c);
113 info
->script
[3] = nvbios_rd16(bios
, data
+ 0x0e);
116 info
->script
[4] = nvbios_rd16(bios
, data
+ 0x10);
121 info
->flags
= nvbios_rd08(bios
, data
+ 0x04);
122 info
->script
[0] = nvbios_rd16(bios
, data
+ 0x05);
123 info
->script
[1] = nvbios_rd16(bios
, data
+ 0x07);
124 info
->lnkcmp
= nvbios_rd16(bios
, data
+ 0x09);
125 info
->script
[2] = nvbios_rd16(bios
, data
+ 0x0b);
126 info
->script
[3] = nvbios_rd16(bios
, data
+ 0x0d);
127 info
->script
[4] = nvbios_rd16(bios
, data
+ 0x0f);
138 nvbios_dpout_match(struct nvkm_bios
*bios
, u16 type
, u16 mask
,
139 u8
*ver
, u8
*hdr
, u8
*cnt
, u8
*len
,
140 struct nvbios_dpout
*info
)
143 while ((data
= nvbios_dpout_parse(bios
, idx
++, ver
, hdr
, cnt
, len
, info
)) || *ver
) {
144 if (data
&& info
->type
== type
) {
145 if ((info
->mask
& mask
) == mask
)
153 nvbios_dpcfg_entry(struct nvkm_bios
*bios
, u16 outp
, u8 idx
,
154 u8
*ver
, u8
*hdr
, u8
*cnt
, u8
*len
)
157 outp
= nvbios_dp_table(bios
, ver
, hdr
, cnt
, len
);
158 *hdr
= *hdr
+ (*len
* * cnt
);
159 *len
= nvbios_rd08(bios
, outp
+ 0x06);
160 *cnt
= nvbios_rd08(bios
, outp
+ 0x07) *
161 nvbios_rd08(bios
, outp
+ 0x05);
165 return outp
+ *hdr
+ (idx
* *len
);
171 nvbios_dpcfg_parse(struct nvkm_bios
*bios
, u16 outp
, u8 idx
,
172 u8
*ver
, u8
*hdr
, u8
*cnt
, u8
*len
,
173 struct nvbios_dpcfg
*info
)
175 u16 data
= nvbios_dpcfg_entry(bios
, outp
, idx
, ver
, hdr
, cnt
, len
);
176 memset(info
, 0x00, sizeof(*info
));
181 info
->dc
= nvbios_rd08(bios
, data
+ 0x02);
182 info
->pe
= nvbios_rd08(bios
, data
+ 0x03);
183 info
->tx_pu
= nvbios_rd08(bios
, data
+ 0x04);
188 info
->pc
= nvbios_rd08(bios
, data
+ 0x00);
189 info
->dc
= nvbios_rd08(bios
, data
+ 0x01);
190 info
->pe
= nvbios_rd08(bios
, data
+ 0x02);
191 info
->tx_pu
= nvbios_rd08(bios
, data
+ 0x03);
194 info
->dc
= nvbios_rd08(bios
, data
+ 0x00);
195 info
->pe
= nvbios_rd08(bios
, data
+ 0x01);
196 info
->tx_pu
= nvbios_rd08(bios
, data
+ 0x02);
207 nvbios_dpcfg_match(struct nvkm_bios
*bios
, u16 outp
, u8 pc
, u8 vs
, u8 pe
,
208 u8
*ver
, u8
*hdr
, u8
*cnt
, u8
*len
,
209 struct nvbios_dpcfg
*info
)
215 const u8 vsoff
[] = { 0, 4, 7, 9 };
216 idx
= (pc
* 10) + vsoff
[vs
] + pe
;
217 if (*ver
>= 0x40 && *ver
<= 0x41 && *hdr
>= 0x12)
218 idx
+= nvbios_rd08(bios
, outp
+ 0x11) * 40;
221 idx
+= nvbios_rd08(bios
, outp
+ 0x11) * 10;
223 while ((data
= nvbios_dpcfg_entry(bios
, outp
, ++idx
,
224 ver
, hdr
, cnt
, len
))) {
225 if (nvbios_rd08(bios
, data
+ 0x00) == vs
&&
226 nvbios_rd08(bios
, data
+ 0x01) == pe
)
231 return nvbios_dpcfg_parse(bios
, outp
, idx
, ver
, hdr
, cnt
, len
, info
);