cregit-Linux how code gets into the kernel

Release 4.11 drivers/gpu/drm/nouveau/nvkm/engine/disp/rootnv04.c

/*
 * Copyright 2012 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
 */

#define nv04_disp_root(p) container_of((p), struct nv04_disp_root, object)
#include "priv.h"

#include <core/client.h>

#include <nvif/class.h>
#include <nvif/cl0046.h>
#include <nvif/unpack.h>


struct nv04_disp_root {
	
struct nvkm_object object;
	
struct nvkm_disp *disp;
};


static int nv04_disp_scanoutpos(struct nv04_disp_root *root, void *data, u32 size, int head) { struct nvkm_device *device = root->disp->engine.subdev.device; struct nvkm_object *object = &root->object; const u32 hoff = head * 0x2000; union { struct nv04_disp_scanoutpos_v0 v0; } *args = data; u32 line; int ret = -ENOSYS; nvif_ioctl(object, "disp scanoutpos size %d\n", size); if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, false))) { nvif_ioctl(object, "disp scanoutpos vers %d\n", args->v0.version); args->v0.vblanks = nvkm_rd32(device, 0x680800 + hoff) & 0xffff; args->v0.vtotal = nvkm_rd32(device, 0x680804 + hoff) & 0xffff; args->v0.vblanke = args->v0.vtotal - 1; args->v0.hblanks = nvkm_rd32(device, 0x680820 + hoff) & 0xffff; args->v0.htotal = nvkm_rd32(device, 0x680824 + hoff) & 0xffff; args->v0.hblanke = args->v0.htotal - 1; /* * If output is vga instead of digital then vtotal/htotal is * invalid so we have to give up and trigger the timestamping * fallback in the drm core. */ if (!args->v0.vtotal || !args->v0.htotal) return -ENOTSUPP; args->v0.time[0] = ktime_to_ns(ktime_get()); line = nvkm_rd32(device, 0x600868 + hoff); args->v0.time[1] = ktime_to_ns(ktime_get()); args->v0.hline = (line & 0xffff0000) >> 16; args->v0.vline = (line & 0x0000ffff); } else return ret; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs318100.00%7100.00%
Total318100.00%7100.00%


static int nv04_disp_mthd(struct nvkm_object *object, u32 mthd, void *data, u32 size) { struct nv04_disp_root *root = nv04_disp_root(object); union { struct nv04_disp_mthd_v0 v0; } *args = data; int head, ret = -ENOSYS; nvif_ioctl(object, "disp mthd size %d\n", size); if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, true))) { nvif_ioctl(object, "disp mthd vers %d mthd %02x head %d\n", args->v0.version, args->v0.method, args->v0.head); mthd = args->v0.method; head = args->v0.head; } else return ret; if (head < 0 || head >= 2) return -ENXIO; switch (mthd) { case NV04_DISP_SCANOUTPOS: return nv04_disp_scanoutpos(root, data, size, head); default: break; } return -EINVAL; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs176100.00%4100.00%
Total176100.00%4100.00%

static const struct nvkm_object_func nv04_disp_root = { .mthd = nv04_disp_mthd, .ntfy = nvkm_disp_ntfy, };
static int nv04_disp_root_new(struct nvkm_disp *disp, const struct nvkm_oclass *oclass, void *data, u32 size, struct nvkm_object **pobject) { struct nv04_disp_root *root; if (!(root = kzalloc(sizeof(*root), GFP_KERNEL))) return -ENOMEM; root->disp = disp; *pobject = &root->object; nvkm_object_ctor(&nv04_disp_root, oclass, &root->object); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs87100.00%2100.00%
Total87100.00%2100.00%

const struct nvkm_disp_oclass nv04_disp_root_oclass = { .base.oclass = NV04_DISP, .base.minver = -1, .base.maxver = -1, .ctor = nv04_disp_root_new, };

Overall Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs67099.85%1090.91%
Julia Lawall10.15%19.09%
Total671100.00%11100.00%
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