cregit-Linux how code gets into the kernel

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

/*
 * Copyright 2014 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/image.h>
#include <subdev/bios/pmu.h>


u32 nvbios_pmuTe(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len) { struct bit_entry bit_p; u32 data = 0; if (!bit_entry(bios, 'p', &bit_p)) { if (bit_p.version == 2 && bit_p.length >= 4) data = nvbios_rd32(bios, bit_p.offset + 0x00); if (data) { *ver = nvbios_rd08(bios, data + 0x00); /* maybe? */ *hdr = nvbios_rd08(bios, data + 0x01); *len = nvbios_rd08(bios, data + 0x02); *cnt = nvbios_rd08(bios, data + 0x03); } } return data; }

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Ben Skeggs135100.00%3100.00%
Total135100.00%3100.00%


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

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Ben Skeggs78100.00%2100.00%
Total78100.00%2100.00%


u32 nvbios_pmuEp(struct nvkm_bios *bios, int idx, u8 *ver, u8 *hdr, struct nvbios_pmuE *info) { u32 data = nvbios_pmuEe(bios, idx, ver, hdr); memset(info, 0x00, sizeof(*info)); switch (!!data * *ver) { default: info->type = nvbios_rd08(bios, data + 0x00); info->data = nvbios_rd32(bios, data + 0x02); break; } return data; }

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Ben Skeggs95100.00%3100.00%
Total95100.00%3100.00%


bool nvbios_pmuRm(struct nvkm_bios *bios, u8 type, struct nvbios_pmuR *info) { struct nvbios_pmuE pmuE; u8 ver, hdr, idx = 0; u32 data; memset(info, 0x00, sizeof(*info)); while ((data = nvbios_pmuEp(bios, idx++, &ver, &hdr, &pmuE))) { if (pmuE.type == type && (data = pmuE.data)) { info->init_addr_pmu = nvbios_rd32(bios, data + 0x08); info->args_addr_pmu = nvbios_rd32(bios, data + 0x0c); info->boot_addr = data + 0x30; info->boot_addr_pmu = nvbios_rd32(bios, data + 0x10) + nvbios_rd32(bios, data + 0x18); info->boot_size = nvbios_rd32(bios, data + 0x1c) - nvbios_rd32(bios, data + 0x18); info->code_addr = info->boot_addr + info->boot_size; info->code_addr_pmu = info->boot_addr_pmu + info->boot_size; info->code_size = nvbios_rd32(bios, data + 0x20); info->data_addr = data + 0x30 + nvbios_rd32(bios, data + 0x24); info->data_addr_pmu = nvbios_rd32(bios, data + 0x28); info->data_size = nvbios_rd32(bios, data + 0x2c); return true; } } return false; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs254100.00%3100.00%
Total254100.00%3100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs575100.00%3100.00%
Total575100.00%3100.00%
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