cregit-Linux how code gets into the kernel

Release 4.11 drivers/gpu/drm/nouveau/nv04_fence.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 "nouveau_drv.h"
#include "nouveau_dma.h"
#include "nouveau_fence.h"

#include <nvif/if0004.h>


struct nv04_fence_chan {
	
struct nouveau_fence_chan base;
};


struct nv04_fence_priv {
	
struct nouveau_fence_priv base;
};


static int nv04_fence_emit(struct nouveau_fence *fence) { struct nouveau_channel *chan = fence->channel; int ret = RING_SPACE(chan, 2); if (ret == 0) { BEGIN_NV04(chan, NvSubSw, 0x0150, 1); OUT_RING (chan, fence->base.seqno); FIRE_RING (chan); } return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs6595.59%150.00%
Maarten Lankhorst34.41%150.00%
Total68100.00%2100.00%


static int nv04_fence_sync(struct nouveau_fence *fence, struct nouveau_channel *prev, struct nouveau_channel *chan) { return -ENODEV; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs25100.00%2100.00%
Total25100.00%2100.00%


static u32 nv04_fence_read(struct nouveau_channel *chan) { struct nv04_nvsw_get_ref_v0 args = {}; WARN_ON(nvif_object_mthd(&chan->nvsw, NV04_NVSW_GET_REF, &args, sizeof(args))); return args.ref; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs43100.00%4100.00%
Total43100.00%4100.00%


static void nv04_fence_context_del(struct nouveau_channel *chan) { struct nv04_fence_chan *fctx = chan->fence; nouveau_fence_context_del(&fctx->base); chan->fence = NULL; nouveau_fence_context_free(&fctx->base); }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs3890.48%266.67%
Maarten Lankhorst49.52%133.33%
Total42100.00%3100.00%


static int nv04_fence_context_new(struct nouveau_channel *chan) { struct nv04_fence_chan *fctx = kzalloc(sizeof(*fctx), GFP_KERNEL); if (fctx) { nouveau_fence_context_new(chan, &fctx->base); fctx->base.emit = nv04_fence_emit; fctx->base.sync = nv04_fence_sync; fctx->base.read = nv04_fence_read; chan->fence = fctx; return 0; } return -ENOMEM; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs7897.50%375.00%
Maarten Lankhorst22.50%125.00%
Total80100.00%4100.00%


static void nv04_fence_destroy(struct nouveau_drm *drm) { struct nv04_fence_priv *priv = drm->fence; drm->fence = NULL; kfree(priv); }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs31100.00%3100.00%
Total31100.00%3100.00%


int nv04_fence_create(struct nouveau_drm *drm) { struct nv04_fence_priv *priv; priv = drm->fence = kzalloc(sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; priv->base.dtor = nv04_fence_destroy; priv->base.context_new = nv04_fence_context_new; priv->base.context_del = nv04_fence_context_del; priv->base.contexts = 15; priv->base.context_base = dma_fence_context_alloc(priv->base.contexts); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs6874.73%360.00%
Maarten Lankhorst2224.18%120.00%
Chris Wilson11.10%120.00%
Total91100.00%5100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs37992.21%1076.92%
Maarten Lankhorst317.54%215.38%
Chris Wilson10.24%17.69%
Total411100.00%13100.00%
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