boost.c

  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 <subdev/bios.h>
 25#include <subdev/bios/bit.h>
 26#include <subdev/bios/boost.h>
 27
 28u32
 29nvbios_boostTe(struct nvkm_bios *bios,
 30	       u8 *ver, u8 *hdr, u8 *cnt, u8 *len, u8 *snr, u8 *ssz)
 31{
 32	struct bit_entry bit_P;
 33	u32 boost = 0;
 34
 35	if (!bit_entry(bios, 'P', &bit_P)) {
 36		if (bit_P.version == 2 && bit_P.length >= 0x34)
 37			boost = nvbios_rd32(bios, bit_P.offset + 0x30);
 38
 39		if (boost) {
 40			*ver = nvbios_rd08(bios, boost + 0);
 41			switch (*ver) {
 42			case 0x11:
 43				*hdr = nvbios_rd08(bios, boost + 1);
 44				*cnt = nvbios_rd08(bios, boost + 5);
 45				*len = nvbios_rd08(bios, boost + 2);
 46				*snr = nvbios_rd08(bios, boost + 4);
 47				*ssz = nvbios_rd08(bios, boost + 3);
 48				return boost;
 49			default:
 50				break;
 51			}
 52		}
 53	}
 54
 55	return 0;
 56}
 57
 58u32
 59nvbios_boostEe(struct nvkm_bios *bios, int idx,
 60	       u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
 61{
 62	u8  snr, ssz;
 63	u32 data = nvbios_boostTe(bios, ver, hdr, cnt, len, &snr, &ssz);
 64	if (data && idx < *cnt) {
 65		data = data + *hdr + (idx * (*len + (snr * ssz)));
 66		*hdr = *len;
 67		*cnt = snr;
 68		*len = ssz;
 69		return data;
 70	}
 71	return 0;
 72}
 73
 74u32
 75nvbios_boostEp(struct nvkm_bios *bios, int idx,
 76	       u8 *ver, u8 *hdr, u8 *cnt, u8 *len, struct nvbios_boostE *info)
 77{
 78	u32 data = nvbios_boostEe(bios, idx, ver, hdr, cnt, len);
 79	memset(info, 0x00, sizeof(*info));
 80	if (data) {
 81		info->pstate = (nvbios_rd16(bios, data + 0x00) & 0x01e0) >> 5;
 82		info->min    =  nvbios_rd16(bios, data + 0x02) * 1000;
 83		info->max    =  nvbios_rd16(bios, data + 0x04) * 1000;
 84	}
 85	return data;
 86}
 87
 88u32
 89nvbios_boostEm(struct nvkm_bios *bios, u8 pstate,
 90	       u8 *ver, u8 *hdr, u8 *cnt, u8 *len, struct nvbios_boostE *info)
 91{
 92	u32 data, idx = 0;
 93	while ((data = nvbios_boostEp(bios, idx++, ver, hdr, cnt, len, info))) {
 94		if (info->pstate == pstate)
 95			break;
 96	}
 97	return data;
 98}
 99
100u32
101nvbios_boostSe(struct nvkm_bios *bios, int idx,
102	       u32 data, u8 *ver, u8 *hdr, u8 cnt, u8 len)
103{
104	if (data && idx < cnt) {
105		data = data + *hdr + (idx * len);
106		*hdr = len;
107		return data;
108	}
109	return 0;
110}
111
112u32
113nvbios_boostSp(struct nvkm_bios *bios, int idx,
114	       u32 data, u8 *ver, u8 *hdr, u8 cnt, u8 len,
115	       struct nvbios_boostS *info)
116{
117	data = nvbios_boostSe(bios, idx, data, ver, hdr, cnt, len);
118	memset(info, 0x00, sizeof(*info));
119	if (data) {
120		info->domain  = nvbios_rd08(bios, data + 0x00);
121		info->percent = nvbios_rd08(bios, data + 0x01);
122		info->min     = nvbios_rd16(bios, data + 0x02) * 1000;
123		info->max     = nvbios_rd16(bios, data + 0x04) * 1000;
124	}
125	return data;
126}