cregit-Linux how code gets into the kernel

Release 4.11 drivers/gpu/drm/nouveau/nvkm/subdev/bios/vmap.c

/*
 * Copyright 2012 Nouveau Community
 *
 * 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: Martin Peres
 */
#include <subdev/bios.h>
#include <subdev/bios/bit.h>
#include <subdev/bios/vmap.h>


u32 nvbios_vmap_table(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len) { struct bit_entry bit_P; u32 vmap = 0; if (!bit_entry(bios, 'P', &bit_P)) { if (bit_P.version == 2) { vmap = nvbios_rd32(bios, bit_P.offset + 0x20); if (vmap) { *ver = nvbios_rd08(bios, vmap + 0); switch (*ver) { case 0x10: case 0x20: *hdr = nvbios_rd08(bios, vmap + 1); *cnt = nvbios_rd08(bios, vmap + 3); *len = nvbios_rd08(bios, vmap + 2); return vmap; default: break; } } } } return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs148100.00%4100.00%
Total148100.00%4100.00%


u32 nvbios_vmap_parse(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len, struct nvbios_vmap *info) { u32 vmap = nvbios_vmap_table(bios, ver, hdr, cnt, len); memset(info, 0x00, sizeof(*info)); switch (!!vmap * *ver) { case 0x10: info->max0 = 0xff; info->max1 = 0xff; info->max2 = 0xff; break; case 0x20: info->max0 = nvbios_rd08(bios, vmap + 0x7); info->max1 = nvbios_rd08(bios, vmap + 0x8); if (*len >= 0xc) info->max2 = nvbios_rd08(bios, vmap + 0xc); else info->max2 = 0xff; break; } return vmap; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs8152.94%375.00%
Karol Herbst7247.06%125.00%
Total153100.00%4100.00%


u32 nvbios_vmap_entry(struct nvkm_bios *bios, int idx, u8 *ver, u8 *len) { u8 hdr, cnt; u32 vmap = nvbios_vmap_table(bios, ver, &hdr, &cnt, len); if (vmap && idx < cnt) { vmap = vmap + hdr + (idx * *len); return vmap; } return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs73100.00%3100.00%
Total73100.00%3100.00%


u32 nvbios_vmap_entry_parse(struct nvkm_bios *bios, int idx, u8 *ver, u8 *len, struct nvbios_vmap_entry *info) { u32 vmap = nvbios_vmap_entry(bios, idx, ver, len); memset(info, 0x00, sizeof(*info)); switch (!!vmap * *ver) { case 0x10: info->link = 0xff; info->min = nvbios_rd32(bios, vmap + 0x00); info->max = nvbios_rd32(bios, vmap + 0x04); info->arg[0] = nvbios_rd32(bios, vmap + 0x08); info->arg[1] = nvbios_rd32(bios, vmap + 0x0c); info->arg[2] = nvbios_rd32(bios, vmap + 0x10); break; case 0x20: info->mode = nvbios_rd08(bios, vmap + 0x00); info->link = nvbios_rd08(bios, vmap + 0x01); info->min = nvbios_rd32(bios, vmap + 0x02); info->max = nvbios_rd32(bios, vmap + 0x06); info->arg[0] = nvbios_rd32(bios, vmap + 0x0a); info->arg[1] = nvbios_rd32(bios, vmap + 0x0e); info->arg[2] = nvbios_rd32(bios, vmap + 0x12); info->arg[3] = nvbios_rd32(bios, vmap + 0x16); info->arg[4] = nvbios_rd32(bios, vmap + 0x1a); info->arg[5] = nvbios_rd32(bios, vmap + 0x1e); break; } return vmap; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs30299.67%480.00%
Karol Herbst10.33%120.00%
Total303100.00%5100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs61489.37%466.67%
Karol Herbst7310.63%233.33%
Total687100.00%6100.00%
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