1/* $NetBSD: nouveau_subdev_bios_timing.c,v 1.1.1.1 2014/08/06 12:36:29 riastradh Exp $ */
2
3/*
4 * Copyright 2013 Red Hat Inc.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Authors: Ben Skeggs
25 */
26
27#include <sys/cdefs.h>
28__KERNEL_RCSID(0, "$NetBSD: nouveau_subdev_bios_timing.c,v 1.1.1.1 2014/08/06 12:36:29 riastradh Exp $");
29
30#include <subdev/bios.h>
31#include <subdev/bios/bit.h>
32#include <subdev/bios/ramcfg.h>
33#include <subdev/bios/timing.h>
34
35u16
36nvbios_timingTe(struct nouveau_bios *bios,
37 u8 *ver, u8 *hdr, u8 *cnt, u8 *len, u8 *snr, u8 *ssz)
38{
39 struct bit_entry bit_P;
40 u16 timing = 0x0000;
41
42 if (!bit_entry(bios, 'P', &bit_P)) {
43 if (bit_P.version == 1)
44 timing = nv_ro16(bios, bit_P.offset + 4);
45 else
46 if (bit_P.version == 2)
47 timing = nv_ro16(bios, bit_P.offset + 8);
48
49 if (timing) {
50 *ver = nv_ro08(bios, timing + 0);
51 switch (*ver) {
52 case 0x10:
53 *hdr = nv_ro08(bios, timing + 1);
54 *cnt = nv_ro08(bios, timing + 2);
55 *len = nv_ro08(bios, timing + 3);
56 *snr = 0;
57 *ssz = 0;
58 return timing;
59 case 0x20:
60 *hdr = nv_ro08(bios, timing + 1);
61 *cnt = nv_ro08(bios, timing + 5);
62 *len = nv_ro08(bios, timing + 2);
63 *snr = nv_ro08(bios, timing + 4);
64 *ssz = nv_ro08(bios, timing + 3);
65 return timing;
66 default:
67 break;
68 }
69 }
70 }
71
72 return 0x0000;
73}
74
75u16
76nvbios_timingEe(struct nouveau_bios *bios, int idx,
77 u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
78{
79 u8 snr, ssz;
80 u16 timing = nvbios_timingTe(bios, ver, hdr, cnt, len, &snr, &ssz);
81 if (timing && idx < *cnt) {
82 timing += *hdr + idx * (*len + (snr * ssz));
83 *hdr = *len;
84 *cnt = snr;
85 *len = ssz;
86 return timing;
87 }
88 return 0x0000;
89}
90
91u16
92nvbios_timingEp(struct nouveau_bios *bios, int idx,
93 u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
94 struct nvbios_ramcfg *p)
95{
96 u16 data = nvbios_timingEe(bios, idx, ver, hdr, cnt, len), temp;
97 switch (!!data * *ver) {
98 case 0x20:
99 p->timing[0] = nv_ro32(bios, data + 0x00);
100 p->timing[1] = nv_ro32(bios, data + 0x04);
101 p->timing[2] = nv_ro32(bios, data + 0x08);
102 p->timing[3] = nv_ro32(bios, data + 0x0c);
103 p->timing[4] = nv_ro32(bios, data + 0x10);
104 p->timing[5] = nv_ro32(bios, data + 0x14);
105 p->timing[6] = nv_ro32(bios, data + 0x18);
106 p->timing[7] = nv_ro32(bios, data + 0x1c);
107 p->timing[8] = nv_ro32(bios, data + 0x20);
108 p->timing[9] = nv_ro32(bios, data + 0x24);
109 p->timing[10] = nv_ro32(bios, data + 0x28);
110 p->timing_20_2e_03 = (nv_ro08(bios, data + 0x2e) & 0x03) >> 0;
111 p->timing_20_2e_30 = (nv_ro08(bios, data + 0x2e) & 0x30) >> 4;
112 p->timing_20_2e_c0 = (nv_ro08(bios, data + 0x2e) & 0xc0) >> 6;
113 p->timing_20_2f_03 = (nv_ro08(bios, data + 0x2f) & 0x03) >> 0;
114 temp = nv_ro16(bios, data + 0x2c);
115 p->timing_20_2c_003f = (temp & 0x003f) >> 0;
116 p->timing_20_2c_1fc0 = (temp & 0x1fc0) >> 6;
117 p->timing_20_30_07 = (nv_ro08(bios, data + 0x30) & 0x07) >> 0;
118 p->timing_20_30_f8 = (nv_ro08(bios, data + 0x30) & 0xf8) >> 3;
119 temp = nv_ro16(bios, data + 0x31);
120 p->timing_20_31_0007 = (temp & 0x0007) >> 0;
121 p->timing_20_31_0078 = (temp & 0x0078) >> 3;
122 p->timing_20_31_0780 = (temp & 0x0780) >> 7;
123 p->timing_20_31_0800 = (temp & 0x0800) >> 11;
124 p->timing_20_31_7000 = (temp & 0x7000) >> 12;
125 p->timing_20_31_8000 = (temp & 0x8000) >> 15;
126 break;
127 default:
128 data = 0;
129 break;
130 }
131 return data;
132}
133