subdev/bios/boost.c

0001 /*
0002  * Copyright 2013 Red Hat Inc.
0003  *
0004  * Permission is hereby granted, free of charge, to any person obtaining a
0005  * copy of this software and associated documentation files (the "Software"),
0006  * to deal in the Software without restriction, including without limitation
0007  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
0008  * and/or sell copies of the Software, and to permit persons to whom the
0009  * Software is furnished to do so, subject to the following conditions:
0010  *
0011  * The above copyright notice and this permission notice shall be included in
0012  * all copies or substantial portions of the Software.
0013  *
0014  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
0015  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
0016  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
0017  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
0018  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
0019  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
0020  * OTHER DEALINGS IN THE SOFTWARE.
0021  *
0022  * Authors: Ben Skeggs
0023  */
0024 #include <subdev/bios.h>
0025 #include <subdev/bios/bit.h>
0026 #include <subdev/bios/boost.h>
0027
0028 u32
0029 nvbios_boostTe(struct nvkm_bios *bios,
0030            u8 *ver, u8 *hdr, u8 *cnt, u8 *len, u8 *snr, u8 *ssz)
0031 {
0032     struct bit_entry bit_P;
0033     u32 boost = 0;
0034
0035     if (!bit_entry(bios, 'P', &bit_P)) {
0036         if (bit_P.version == 2 && bit_P.length >= 0x34)
0037             boost = nvbios_rd32(bios, bit_P.offset + 0x30);
0038
0039         if (boost) {
0040             *ver = nvbios_rd08(bios, boost + 0);
0041             switch (*ver) {
0042             case 0x11:
0043                 *hdr = nvbios_rd08(bios, boost + 1);
0044                 *cnt = nvbios_rd08(bios, boost + 5);
0045                 *len = nvbios_rd08(bios, boost + 2);
0046                 *snr = nvbios_rd08(bios, boost + 4);
0047                 *ssz = nvbios_rd08(bios, boost + 3);
0048                 return boost;
0049             default:
0050                 break;
0051             }
0052         }
0053     }
0054
0055     return 0;
0056 }
0057
0058 u32
0059 nvbios_boostEe(struct nvkm_bios *bios, int idx,
0060            u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
0061 {
0062     u8  snr, ssz;
0063     u32 data = nvbios_boostTe(bios, ver, hdr, cnt, len, &snr, &ssz);
0064     if (data && idx < *cnt) {
0065         data = data + *hdr + (idx * (*len + (snr * ssz)));
0066         *hdr = *len;
0067         *cnt = snr;
0068         *len = ssz;
0069         return data;
0070     }
0071     return 0;
0072 }
0073
0074 u32
0075 nvbios_boostEp(struct nvkm_bios *bios, int idx,
0076            u8 *ver, u8 *hdr, u8 *cnt, u8 *len, struct nvbios_boostE *info)
0077 {
0078     u32 data = nvbios_boostEe(bios, idx, ver, hdr, cnt, len);
0079     memset(info, 0x00, sizeof(*info));
0080     if (data) {
0081         info->pstate = (nvbios_rd16(bios, data + 0x00) & 0x01e0) >> 5;
0082         info->min    =  nvbios_rd16(bios, data + 0x02) * 1000;
0083         info->max    =  nvbios_rd16(bios, data + 0x04) * 1000;
0084     }
0085     return data;
0086 }
0087
0088 u32
0089 nvbios_boostEm(struct nvkm_bios *bios, u8 pstate,
0090            u8 *ver, u8 *hdr, u8 *cnt, u8 *len, struct nvbios_boostE *info)
0091 {
0092     u32 data, idx = 0;
0093     while ((data = nvbios_boostEp(bios, idx++, ver, hdr, cnt, len, info))) {
0094         if (info->pstate == pstate)
0095             break;
0096     }
0097     return data;
0098 }
0099
0100 u32
0101 nvbios_boostSe(struct nvkm_bios *bios, int idx,
0102            u32 data, u8 *ver, u8 *hdr, u8 cnt, u8 len)
0103 {
0104     if (data && idx < cnt) {
0105         data = data + *hdr + (idx * len);
0106         *hdr = len;
0107         return data;
0108     }
0109     return 0;
0110 }
0111
0112 u32
0113 nvbios_boostSp(struct nvkm_bios *bios, int idx,
0114            u32 data, u8 *ver, u8 *hdr, u8 cnt, u8 len,
0115            struct nvbios_boostS *info)
0116 {
0117     data = nvbios_boostSe(bios, idx, data, ver, hdr, cnt, len);
0118     memset(info, 0x00, sizeof(*info));
0119     if (data) {
0120         info->domain  = nvbios_rd08(bios, data + 0x00);
0121         info->percent = nvbios_rd08(bios, data + 0x01);
0122         info->min     = nvbios_rd16(bios, data + 0x02) * 1000;
0123         info->max     = nvbios_rd16(bios, data + 0x04) * 1000;
0124     }
0125     return data;
0126 }