cregit-Linux how code gets into the kernel

Release 4.11 drivers/gpu/drm/nouveau/nvkm/subdev/devinit/gm200.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
 */
#include "nv50.h"

#include <subdev/bios.h>
#include <subdev/bios/bit.h>
#include <subdev/bios/pmu.h>
#include <subdev/timer.h>


static void pmu_code(struct nv50_devinit *init, u32 pmu, u32 img, u32 len, bool sec) { struct nvkm_device *device = init->base.subdev.device; struct nvkm_bios *bios = device->bios; int i; nvkm_wr32(device, 0x10a180, 0x01000000 | (sec ? 0x10000000 : 0) | pmu); for (i = 0; i < len; i += 4) { if ((i & 0xff) == 0) nvkm_wr32(device, 0x10a188, (pmu + i) >> 8); nvkm_wr32(device, 0x10a184, nvbios_rd32(bios, img + i)); } while (i & 0xff) { nvkm_wr32(device, 0x10a184, 0x00000000); i += 4; } }

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Ben Skeggs145100.00%5100.00%
Total145100.00%5100.00%


static void pmu_data(struct nv50_devinit *init, u32 pmu, u32 img, u32 len) { struct nvkm_device *device = init->base.subdev.device; struct nvkm_bios *bios = device->bios; int i; nvkm_wr32(device, 0x10a1c0, 0x01000000 | pmu); for (i = 0; i < len; i += 4) nvkm_wr32(device, 0x10a1c4, nvbios_rd32(bios, img + i)); }

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Ben Skeggs86100.00%5100.00%
Total86100.00%5100.00%


static u32 pmu_args(struct nv50_devinit *init, u32 argp, u32 argi) { struct nvkm_device *device = init->base.subdev.device; nvkm_wr32(device, 0x10a1c0, argp); nvkm_wr32(device, 0x10a1c0, nvkm_rd32(device, 0x10a1c4) + argi); return nvkm_rd32(device, 0x10a1c4); }

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Ben Skeggs63100.00%3100.00%
Total63100.00%3100.00%


static void pmu_exec(struct nv50_devinit *init, u32 init_addr) { struct nvkm_device *device = init->base.subdev.device; nvkm_wr32(device, 0x10a104, init_addr); nvkm_wr32(device, 0x10a10c, 0x00000000); nvkm_wr32(device, 0x10a100, 0x00000002); }

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Ben Skeggs54100.00%3100.00%
Total54100.00%3100.00%


static int pmu_load(struct nv50_devinit *init, u8 type, bool post, u32 *init_addr_pmu, u32 *args_addr_pmu) { struct nvkm_subdev *subdev = &init->base.subdev; struct nvkm_bios *bios = subdev->device->bios; struct nvbios_pmuR pmu; if (!nvbios_pmuRm(bios, type, &pmu)) { nvkm_error(subdev, "VBIOS PMU fuc %02x not found\n", type); return -EINVAL; } if (!post) return 0; pmu_code(init, pmu.boot_addr_pmu, pmu.boot_addr, pmu.boot_size, false); pmu_code(init, pmu.code_addr_pmu, pmu.code_addr, pmu.code_size, true); pmu_data(init, pmu.data_addr_pmu, pmu.data_addr, pmu.data_size); if (init_addr_pmu) { *init_addr_pmu = pmu.init_addr_pmu; *args_addr_pmu = pmu.args_addr_pmu; return 0; } return pmu_exec(init, pmu.init_addr_pmu), 0; }

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Ben Skeggs178100.00%4100.00%
Total178100.00%4100.00%


static int gm200_devinit_post(struct nvkm_devinit *base, bool post) { struct nv50_devinit *init = nv50_devinit(base); struct nvkm_subdev *subdev = &init->base.subdev; struct nvkm_device *device = subdev->device; struct nvkm_bios *bios = device->bios; struct bit_entry bit_I; u32 exec, args; int ret; if (bit_entry(bios, 'I', &bit_I) || bit_I.version != 1 || bit_I.length < 0x1c) { nvkm_error(subdev, "VBIOS PMU init data not found\n"); return -EINVAL; } ret = pmu_load(init, 0x04, post, &exec, &args); if (ret) return ret; /* upload first chunk of init data */ if (post) { // devinit tables u32 pmu = pmu_args(init, args + 0x08, 0x08); u32 img = nvbios_rd16(bios, bit_I.offset + 0x14); u32 len = nvbios_rd16(bios, bit_I.offset + 0x16); pmu_data(init, pmu, img, len); } /* upload second chunk of init data */ if (post) { // devinit boot scripts u32 pmu = pmu_args(init, args + 0x08, 0x10); u32 img = nvbios_rd16(bios, bit_I.offset + 0x18); u32 len = nvbios_rd16(bios, bit_I.offset + 0x1a); pmu_data(init, pmu, img, len); } /* execute init tables */ if (post) { nvkm_wr32(device, 0x10a040, 0x00005000); pmu_exec(init, exec); if (nvkm_msec(device, 2000, if (nvkm_rd32(device, 0x10a040) & 0x00002000) break; ) < 0) return -ETIMEDOUT; } /* load and execute some other ucode image (bios therm?) */ return pmu_load(init, 0x01, post, NULL, NULL); }

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Ben Skeggs308100.00%10100.00%
Total308100.00%10100.00%

static const struct nvkm_devinit_func gm200_devinit = { .preinit = gf100_devinit_preinit, .init = nv50_devinit_init, .post = gm200_devinit_post, .pll_set = gf100_devinit_pll_set, .disable = gm107_devinit_disable, };
int gm200_devinit_new(struct nvkm_device *device, int index, struct nvkm_devinit **pinit) { return nv50_devinit_new_(&gm200_devinit, device, index, pinit); }

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Ben Skeggs32100.00%2100.00%
Total32100.00%2100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs91499.89%1090.91%
Alexandre Courbot10.11%19.09%
Total915100.00%11100.00%
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