cregit-Linux how code gets into the kernel

Release 4.11 drivers/gpu/drm/nouveau/nvkm/engine/mpeg/nv44.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 nv44_mpeg(p) container_of((p), struct nv44_mpeg, engine)
#include "priv.h"

#include <core/client.h>
#include <core/gpuobj.h>
#include <engine/fifo.h>

#include <nvif/class.h>


struct nv44_mpeg {
	
struct nvkm_engine engine;
	
struct list_head chan;
};

/*******************************************************************************
 * PMPEG context
 ******************************************************************************/

#define nv44_mpeg_chan(p) container_of((p), struct nv44_mpeg_chan, object)


struct nv44_mpeg_chan {
	
struct nvkm_object object;
	
struct nv44_mpeg *mpeg;
	
struct nvkm_fifo_chan *fifo;
	
struct list_head head;
	
u32 inst;
};


static int nv44_mpeg_chan_bind(struct nvkm_object *object, struct nvkm_gpuobj *parent, int align, struct nvkm_gpuobj **pgpuobj) { struct nv44_mpeg_chan *chan = nv44_mpeg_chan(object); int ret = nvkm_gpuobj_new(chan->object.engine->subdev.device, 264 * 4, align, true, parent, pgpuobj); if (ret == 0) { chan->inst = (*pgpuobj)->addr; nvkm_kmap(*pgpuobj); nvkm_wo32(*pgpuobj, 0x78, 0x02001ec1); nvkm_done(*pgpuobj); } return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs10699.07%266.67%
Ilia Mirkin10.93%133.33%
Total107100.00%3100.00%


static int nv44_mpeg_chan_fini(struct nvkm_object *object, bool suspend) { struct nv44_mpeg_chan *chan = nv44_mpeg_chan(object); struct nv44_mpeg *mpeg = chan->mpeg; struct nvkm_device *device = mpeg->engine.subdev.device; u32 inst = 0x80000000 | (chan->inst >> 4); nvkm_mask(device, 0x00b32c, 0x00000001, 0x00000000); if (nvkm_rd32(device, 0x00b318) == inst) nvkm_mask(device, 0x00b318, 0x80000000, 0x00000000); nvkm_mask(device, 0x00b32c, 0x00000001, 0x00000001); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs7974.53%375.00%
Ilia Mirkin2725.47%125.00%
Total106100.00%4100.00%


static void * nv44_mpeg_chan_dtor(struct nvkm_object *object) { struct nv44_mpeg_chan *chan = nv44_mpeg_chan(object); struct nv44_mpeg *mpeg = chan->mpeg; unsigned long flags; spin_lock_irqsave(&mpeg->engine.lock, flags); list_del(&chan->head); spin_unlock_irqrestore(&mpeg->engine.lock, flags); return chan; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs6795.71%266.67%
Ilia Mirkin34.29%133.33%
Total70100.00%3100.00%

static const struct nvkm_object_func nv44_mpeg_chan = { .dtor = nv44_mpeg_chan_dtor, .fini = nv44_mpeg_chan_fini, .bind = nv44_mpeg_chan_bind, };
static int nv44_mpeg_chan_new(struct nvkm_fifo_chan *fifoch, const struct nvkm_oclass *oclass, struct nvkm_object **pobject) { struct nv44_mpeg *mpeg = nv44_mpeg(oclass->engine); struct nv44_mpeg_chan *chan; unsigned long flags; if (!(chan = kzalloc(sizeof(*chan), GFP_KERNEL))) return -ENOMEM; nvkm_object_ctor(&nv44_mpeg_chan, oclass, &chan->object); chan->mpeg = mpeg; chan->fifo = fifoch; *pobject = &chan->object; spin_lock_irqsave(&mpeg->engine.lock, flags); list_add(&chan->head, &mpeg->chan); spin_unlock_irqrestore(&mpeg->engine.lock, flags); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs9870.50%480.00%
Ilia Mirkin4129.50%120.00%
Total139100.00%5100.00%

/******************************************************************************* * PMPEG engine/subdev functions ******************************************************************************/
static bool nv44_mpeg_mthd(struct nvkm_device *device, u32 mthd, u32 data) { switch (mthd) { case 0x190: case 0x1a0: case 0x1b0: return nv40_mpeg_mthd_dma(device, mthd, data); default: break; } return false; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs4697.87%150.00%
Ilia Mirkin12.13%150.00%
Total47100.00%2100.00%


static void nv44_mpeg_intr(struct nvkm_engine *engine) { struct nv44_mpeg *mpeg = nv44_mpeg(engine); struct nvkm_subdev *subdev = &mpeg->engine.subdev; struct nvkm_device *device = subdev->device; struct nv44_mpeg_chan *temp, *chan = NULL; unsigned long flags; u32 inst = nvkm_rd32(device, 0x00b318) & 0x000fffff; u32 stat = nvkm_rd32(device, 0x00b100); u32 type = nvkm_rd32(device, 0x00b230); u32 mthd = nvkm_rd32(device, 0x00b234); u32 data = nvkm_rd32(device, 0x00b238); u32 show = stat; spin_lock_irqsave(&mpeg->engine.lock, flags); list_for_each_entry(temp, &mpeg->chan, head) { if (temp->inst >> 4 == inst) { chan = temp; list_del(&chan->head); list_add(&chan->head, &mpeg->chan); break; } } if (stat & 0x01000000) { /* happens on initial binding of the object */ if (type == 0x00000020 && mthd == 0x0000) { nvkm_mask(device, 0x00b308, 0x00000000, 0x00000000); show &= ~0x01000000; } if (type == 0x00000010) { if (nv44_mpeg_mthd(subdev->device, mthd, data)) show &= ~0x01000000; } } nvkm_wr32(device, 0x00b100, stat); nvkm_wr32(device, 0x00b230, 0x00000001); if (show) { nvkm_error(subdev, "ch %d [%08x %s] %08x %08x %08x %08x\n", chan ? chan->fifo->chid : -1, inst << 4, chan ? chan->object.client->name : "unknown", stat, type, mthd, data); } spin_unlock_irqrestore(&mpeg->engine.lock, flags); }

Contributors

PersonTokensPropCommitsCommitProp
Ilia Mirkin16652.87%116.67%
Ben Skeggs14847.13%583.33%
Total314100.00%6100.00%

static const struct nvkm_engine_func nv44_mpeg = { .init = nv31_mpeg_init, .intr = nv44_mpeg_intr, .tile = nv31_mpeg_tile, .fifo.cclass = nv44_mpeg_chan_new, .sclass = { { -1, -1, NV31_MPEG, &nv31_mpeg_object }, {} } };
int nv44_mpeg_new(struct nvkm_device *device, int index, struct nvkm_engine **pmpeg) { struct nv44_mpeg *mpeg; if (!(mpeg = kzalloc(sizeof(*mpeg), GFP_KERNEL))) return -ENOMEM; INIT_LIST_HEAD(&mpeg->chan); *pmpeg = &mpeg->engine; return nvkm_engine_ctor(&nv44_mpeg, device, index, true, &mpeg->engine); }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs5366.25%480.00%
Ilia Mirkin2733.75%120.00%
Total80100.00%5100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs72471.90%990.00%
Ilia Mirkin28328.10%110.00%
Total1007100.00%10100.00%
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