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kernel/linux-rt-4.4.41/drivers/gpu/drm/nouveau/nvkm/subdev/bios/boost.c 3.54 KB
5113f6f70   김현기   kernel add
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  /*
   * Copyright 2013 Red Hat Inc.
   *
   * Permission is hereby granted, free of charge, to any person obtaining a
   * copy of this software and associated documentation files (the "Software"),
   * to deal in the Software without restriction, including without limitation
   * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   * and/or sell copies of the Software, and to permit persons to whom the
   * Software is furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
   * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
   * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
   * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
   * OTHER DEALINGS IN THE SOFTWARE.
   *
   * Authors: Ben Skeggs
   */
  #include <subdev/bios.h>
  #include <subdev/bios/bit.h>
  #include <subdev/bios/boost.h>
  
  u16
  nvbios_boostTe(struct nvkm_bios *bios,
  	       u8 *ver, u8 *hdr, u8 *cnt, u8 *len, u8 *snr, u8 *ssz)
  {
  	struct bit_entry bit_P;
  	u16 boost = 0x0000;
  
  	if (!bit_entry(bios, 'P', &bit_P)) {
  		if (bit_P.version == 2)
  			boost = nvbios_rd16(bios, bit_P.offset + 0x30);
  
  		if (boost) {
  			*ver = nvbios_rd08(bios, boost + 0);
  			switch (*ver) {
  			case 0x11:
  				*hdr = nvbios_rd08(bios, boost + 1);
  				*cnt = nvbios_rd08(bios, boost + 5);
  				*len = nvbios_rd08(bios, boost + 2);
  				*snr = nvbios_rd08(bios, boost + 4);
  				*ssz = nvbios_rd08(bios, boost + 3);
  				return boost;
  			default:
  				break;
  			}
  		}
  	}
  
  	return 0x0000;
  }
  
  u16
  nvbios_boostEe(struct nvkm_bios *bios, int idx,
  	       u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
  {
  	u8  snr, ssz;
  	u16 data = nvbios_boostTe(bios, ver, hdr, cnt, len, &snr, &ssz);
  	if (data && idx < *cnt) {
  		data = data + *hdr + (idx * (*len + (snr * ssz)));
  		*hdr = *len;
  		*cnt = snr;
  		*len = ssz;
  		return data;
  	}
  	return 0x0000;
  }
  
  u16
  nvbios_boostEp(struct nvkm_bios *bios, int idx,
  	       u8 *ver, u8 *hdr, u8 *cnt, u8 *len, struct nvbios_boostE *info)
  {
  	u16 data = nvbios_boostEe(bios, idx, ver, hdr, cnt, len);
  	memset(info, 0x00, sizeof(*info));
  	if (data) {
  		info->pstate = (nvbios_rd16(bios, data + 0x00) & 0x01e0) >> 5;
  		info->min    =  nvbios_rd16(bios, data + 0x02) * 1000;
  		info->max    =  nvbios_rd16(bios, data + 0x04) * 1000;
  	}
  	return data;
  }
  
  u16
  nvbios_boostEm(struct nvkm_bios *bios, u8 pstate,
  	       u8 *ver, u8 *hdr, u8 *cnt, u8 *len, struct nvbios_boostE *info)
  {
  	u32 data, idx = 0;
  	while ((data = nvbios_boostEp(bios, idx++, ver, hdr, cnt, len, info))) {
  		if (info->pstate == pstate)
  			break;
  	}
  	return data;
  }
  
  u16
  nvbios_boostSe(struct nvkm_bios *bios, int idx,
  	       u16 data, u8 *ver, u8 *hdr, u8 cnt, u8 len)
  {
  	if (data && idx < cnt) {
  		data = data + *hdr + (idx * len);
  		*hdr = len;
  		return data;
  	}
  	return 0x0000;
  }
  
  u16
  nvbios_boostSp(struct nvkm_bios *bios, int idx,
  	       u16 data, u8 *ver, u8 *hdr, u8 cnt, u8 len,
  	       struct nvbios_boostS *info)
  {
  	data = nvbios_boostSe(bios, idx, data, ver, hdr, cnt, len);
  	memset(info, 0x00, sizeof(*info));
  	if (data) {
  		info->domain  = nvbios_rd08(bios, data + 0x00);
  		info->percent = nvbios_rd08(bios, data + 0x01);
  		info->min     = nvbios_rd16(bios, data + 0x02) * 1000;
  		info->max     = nvbios_rd16(bios, data + 0x04) * 1000;
  	}
  	return data;
  }