cregit-Linux how code gets into the kernel

Release 4.11 drivers/gpu/drm/nouveau/nvkm/subdev/devinit/nv50.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/dcb.h>
#include <subdev/bios/disp.h>
#include <subdev/bios/init.h>
#include <subdev/bios/pll.h>
#include <subdev/clk/pll.h>
#include <subdev/vga.h>


int nv50_devinit_pll_set(struct nvkm_devinit *init, u32 type, u32 freq) { struct nvkm_subdev *subdev = &init->subdev; struct nvkm_device *device = subdev->device; struct nvkm_bios *bios = device->bios; struct nvbios_pll info; int N1, M1, N2, M2, P; int ret; ret = nvbios_pll_parse(bios, type, &info); if (ret) { nvkm_error(subdev, "failed to retrieve pll data, %d\n", ret); return ret; } ret = nv04_pll_calc(subdev, &info, freq, &N1, &M1, &N2, &M2, &P); if (!ret) { nvkm_error(subdev, "failed pll calculation\n"); return -EINVAL; } switch (info.type) { case PLL_VPLL0: case PLL_VPLL1: nvkm_wr32(device, info.reg + 0, 0x10000611); nvkm_mask(device, info.reg + 4, 0x00ff00ff, (M1 << 16) | N1); nvkm_mask(device, info.reg + 8, 0x7fff00ff, (P << 28) | (M2 << 16) | N2); break; case PLL_MEMORY: nvkm_mask(device, info.reg + 0, 0x01ff0000, (P << 22) | (info.bias_p << 19) | (P << 16)); nvkm_wr32(device, info.reg + 4, (N1 << 8) | M1); break; default: nvkm_mask(device, info.reg + 0, 0x00070000, (P << 16)); nvkm_wr32(device, info.reg + 4, (N1 << 8) | M1); break; } return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs312100.00%7100.00%
Total312100.00%7100.00%


static u64 nv50_devinit_disable(struct nvkm_devinit *init) { struct nvkm_device *device = init->subdev.device; u32 r001540 = nvkm_rd32(device, 0x001540); u64 disable = 0ULL; if (!(r001540 & 0x40000000)) disable |= (1ULL << NVKM_ENGINE_MPEG); return disable; }

Contributors

PersonTokensPropCommitsCommitProp
Ilia Mirkin4578.95%125.00%
Ben Skeggs1221.05%375.00%
Total57100.00%4100.00%


void nv50_devinit_preinit(struct nvkm_devinit *base) { struct nvkm_subdev *subdev = &base->subdev; struct nvkm_device *device = subdev->device; /* our heuristics can't detect whether the board has had its * devinit scripts executed or not if the display engine is * missing, assume it's a secondary gpu which requires post */ if (!base->post) { u64 disable = nvkm_devinit_disable(base); if (disable & (1ULL << NVKM_ENGINE_DISP)) base->post = true; } /* magic to detect whether or not x86 vbios code has executed * the devinit scripts to initialise the board */ if (!base->post) { if (!nvkm_rdvgac(device, 0, 0x00) && !nvkm_rdvgac(device, 0, 0x1a)) { nvkm_debug(subdev, "adaptor not initialised\n"); base->post = true; } } }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs10595.45%787.50%
Alexandre Courbot54.55%112.50%
Total110100.00%8100.00%


void nv50_devinit_init(struct nvkm_devinit *base) { 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 nvbios_outp info; struct dcb_output outp; u8 ver = 0xff, hdr, cnt, len; int i = 0; /* if we ran the init tables, we have to execute the first script * pointer of each dcb entry's display encoder table in order * to properly initialise each encoder. */ while (init->base.post && dcb_outp_parse(bios, i, &ver, &hdr, &outp)) { if (nvbios_outp_match(bios, outp.hasht, outp.hashm, &ver, &hdr, &cnt, &len, &info)) { struct nvbios_init exec = { .subdev = subdev, .bios = bios, .offset = info.script[0], .outp = &outp, .crtc = -1, .execute = 1, }; nvbios_exec(&exec); } i++; } }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs185100.00%5100.00%
Total185100.00%5100.00%


int nv50_devinit_new_(const struct nvkm_devinit_func *func, struct nvkm_device *device, int index, struct nvkm_devinit **pinit) { struct nv50_devinit *init; if (!(init = kzalloc(sizeof(*init), GFP_KERNEL))) return -ENOMEM; *pinit = &init->base; nvkm_devinit_ctor(func, device, index, &init->base); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs77100.00%4100.00%
Total77100.00%4100.00%

static const struct nvkm_devinit_func nv50_devinit = { .preinit = nv50_devinit_preinit, .init = nv50_devinit_init, .post = nv04_devinit_post, .pll_set = nv50_devinit_pll_set, .disable = nv50_devinit_disable, };
int nv50_devinit_new(struct nvkm_device *device, int index, struct nvkm_devinit **pinit) { return nv50_devinit_new_(&nv50_devinit, device, index, pinit); }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs32100.00%1100.00%
Total32100.00%1100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs77693.38%1487.50%
Ilia Mirkin506.02%16.25%
Alexandre Courbot50.60%16.25%
Total831100.00%16100.00%
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