cregit-Linux how code gets into the kernel

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

/*
 * 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 <bskeggs@redhat.com>
 */
#include <subdev/bios.h>
#include <subdev/bios/bit.h>
#include <subdev/bios/ramcfg.h>
#include <subdev/bios/M0203.h>


static u8 nvbios_ramcfg_strap(struct nvkm_subdev *subdev) { return (nvkm_rd32(subdev->device, 0x101000) & 0x0000003c) >> 2; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs27100.00%4100.00%
Total27100.00%4100.00%


u8 nvbios_ramcfg_count(struct nvkm_bios *bios) { struct bit_entry bit_M; if (!bit_entry(bios, 'M', &bit_M)) { if (bit_M.version == 1 && bit_M.length >= 5) return nvbios_rd08(bios, bit_M.offset + 2); if (bit_M.version == 2 && bit_M.length >= 3) return nvbios_rd08(bios, bit_M.offset + 0); } return 0x00; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs84100.00%3100.00%
Total84100.00%3100.00%


u8 nvbios_ramcfg_index(struct nvkm_subdev *subdev) { struct nvkm_bios *bios = subdev->device->bios; u8 strap = nvbios_ramcfg_strap(subdev); u32 xlat = 0x00000000; struct bit_entry bit_M; struct nvbios_M0203E M0203E; u8 ver, hdr; if (!bit_entry(bios, 'M', &bit_M)) { if (bit_M.version == 1 && bit_M.length >= 5) xlat = nvbios_rd16(bios, bit_M.offset + 3); if (bit_M.version == 2 && bit_M.length >= 3) { /*XXX: is M ever shorter than this? * if not - what is xlat used for now? * also - sigh.. */ if (bit_M.length >= 7 && nvbios_M0203Em(bios, strap, &ver, &hdr, &M0203E)) return M0203E.group; xlat = nvbios_rd16(bios, bit_M.offset + 1); } } if (xlat) strap = nvbios_rd08(bios, xlat + strap); return strap; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs166100.00%6100.00%
Total166100.00%6100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs290100.00%7100.00%
Total290100.00%7100.00%
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