cregit-Linux how code gets into the kernel

Release 4.11 drivers/gpu/drm/nouveau/nvkm/engine/sw/nv50.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
 */
#include "nv50.h"

#include <core/gpuobj.h>
#include <engine/disp.h>
#include <engine/fifo/chan.h>
#include <subdev/bar.h>

#include <nvif/class.h>
#include <nvif/event.h>

/*******************************************************************************
 * software context
 ******************************************************************************/


static int nv50_sw_chan_vblsem_release(struct nvkm_notify *notify) { struct nv50_sw_chan *chan = container_of(notify, typeof(*chan), vblank.notify[notify->index]); struct nvkm_sw *sw = chan->base.sw; struct nvkm_device *device = sw->engine.subdev.device; nvkm_wr32(device, 0x001704, chan->base.fifo->inst->addr >> 12); nvkm_wr32(device, 0x001710, 0x80000000 | chan->vblank.ctxdma); nvkm_bar_flush(device->bar); if (device->chipset == 0x50) { nvkm_wr32(device, 0x001570, chan->vblank.offset); nvkm_wr32(device, 0x001574, chan->vblank.value); } else { nvkm_wr32(device, 0x060010, chan->vblank.offset); nvkm_wr32(device, 0x060014, chan->vblank.value); } return NVKM_NOTIFY_DROP; }

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Ben Skeggs169100.00%9100.00%
Total169100.00%9100.00%


static bool nv50_sw_chan_mthd(struct nvkm_sw_chan *base, int subc, u32 mthd, u32 data) { struct nv50_sw_chan *chan = nv50_sw_chan(base); struct nvkm_engine *engine = chan->base.object.engine; struct nvkm_device *device = engine->subdev.device; switch (mthd) { case 0x018c: chan->vblank.ctxdma = data; return true; case 0x0400: chan->vblank.offset = data; return true; case 0x0404: chan->vblank.value = data; return true; case 0x0408: if (data < device->disp->vblank.index_nr) { nvkm_notify_get(&chan->vblank.notify[data]); return true; } break; default: break; } return false; }

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void * nv50_sw_chan_dtor(struct nvkm_sw_chan *base) { struct nv50_sw_chan *chan = nv50_sw_chan(base); int i; for (i = 0; i < ARRAY_SIZE(chan->vblank.notify); i++) nvkm_notify_fini(&chan->vblank.notify[i]); return chan; }

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Ben Skeggs60100.00%4100.00%
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static const struct nvkm_sw_chan_func nv50_sw_chan = { .dtor = nv50_sw_chan_dtor, .mthd = nv50_sw_chan_mthd, };
static int nv50_sw_chan_new(struct nvkm_sw *sw, struct nvkm_fifo_chan *fifoch, const struct nvkm_oclass *oclass, struct nvkm_object **pobject) { struct nvkm_disp *disp = sw->engine.subdev.device->disp; struct nv50_sw_chan *chan; int ret, i; if (!(chan = kzalloc(sizeof(*chan), GFP_KERNEL))) return -ENOMEM; *pobject = &chan->base.object; ret = nvkm_sw_chan_ctor(&nv50_sw_chan, sw, fifoch, oclass, &chan->base); if (ret) return ret; for (i = 0; disp && i < disp->vblank.index_nr; i++) { ret = nvkm_notify_init(NULL, &disp->vblank, nv50_sw_chan_vblsem_release, false, &(struct nvif_notify_head_req_v0) { .head = i, }, sizeof(struct nvif_notify_head_req_v0), sizeof(struct nvif_notify_head_rep_v0), &chan->vblank.notify[i]); if (ret) return ret; } return 0; }

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Ben Skeggs192100.00%14100.00%
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/******************************************************************************* * software engine/subdev functions ******************************************************************************/ static const struct nvkm_sw_func nv50_sw = { .chan_new = nv50_sw_chan_new, .sclass = { { nvkm_nvsw_new, { -1, -1, NVIF_CLASS_SW_NV50 } }, {} } };
int nv50_sw_new(struct nvkm_device *device, int index, struct nvkm_sw **psw) { return nvkm_sw_new_(&nv50_sw, device, index, psw); }

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Ben Skeggs32100.00%3100.00%
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Overall Contributors

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Ben Skeggs670100.00%23100.00%
Total670100.00%23100.00%
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