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/*
* 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 "channv04.h"
#include "regsnv04.h"
#include <core/client.h>
#include <core/ramht.h>
#include <subdev/instmem.h>
#include <nvif/class.h>
#include <nvif/cl006b.h>
#include <nvif/unpack.h>
void
nv04_fifo_dma_object_dtor(struct nvkm_fifo_chan *base, int cookie)
{
struct nv04_fifo_chan *chan = nv04_fifo_chan(base);
struct nvkm_instmem *imem = chan->fifo->base.engine.subdev.device->imem;
nvkm_ramht_remove(imem->ramht, cookie);
}
static int
nv04_fifo_dma_object_ctor(struct nvkm_fifo_chan *base,
struct nvkm_object *object)
{
struct nv04_fifo_chan *chan = nv04_fifo_chan(base);
struct nvkm_instmem *imem = chan->fifo->base.engine.subdev.device->imem;
u32 context = 0x80000000 | chan->base.chid << 24;
u32 handle = object->handle;
int hash;
switch (object->engine->subdev.index) {
case NVKM_ENGINE_DMAOBJ:
case NVKM_ENGINE_SW : context |= 0x00000000; break;
case NVKM_ENGINE_GR : context |= 0x00010000; break;
case NVKM_ENGINE_MPEG : context |= 0x00020000; break;
default:
WARN_ON(1);
return -EINVAL;
}
mutex_lock(&chan->fifo->base.engine.subdev.mutex);
hash = nvkm_ramht_insert(imem->ramht, object, chan->base.chid, 4,
handle, context);
mutex_unlock(&chan->fifo->base.engine.subdev.mutex);
return hash;
}
void
nv04_fifo_dma_fini(struct nvkm_fifo_chan *base)
{
struct nv04_fifo_chan *chan = nv04_fifo_chan(base);
struct nv04_fifo *fifo = chan->fifo;
struct nvkm_device *device = fifo->base.engine.subdev.device;
struct nvkm_memory *fctx = device->imem->ramfc;
const struct nv04_fifo_ramfc *c;
unsigned long flags;
u32 mask = fifo->base.nr - 1;
u32 data = chan->ramfc;
u32 chid;
/* prevent fifo context switches */
spin_lock_irqsave(&fifo->base.lock, flags);
nvkm_wr32(device, NV03_PFIFO_CACHES, 0);
/* if this channel is active, replace it with a null context */
chid = nvkm_rd32(device, NV03_PFIFO_CACHE1_PUSH1) & mask;
if (chid == chan->base.chid) {
nvkm_mask(device, NV04_PFIFO_CACHE1_DMA_PUSH, 0x00000001, 0);
nvkm_wr32(device, NV03_PFIFO_CACHE1_PUSH0, 0);
nvkm_mask(device, NV04_PFIFO_CACHE1_PULL0, 0x00000001, 0);
c = fifo->ramfc;
do {
u32 rm = ((1ULL << c->bits) - 1) << c->regs;
u32 cm = ((1ULL << c->bits) - 1) << c->ctxs;
u32 rv = (nvkm_rd32(device, c->regp) & rm) >> c->regs;
u32 cv = (nvkm_ro32(fctx, c->ctxp + data) & ~cm);
nvkm_wo32(fctx, c->ctxp + data, cv | (rv << c->ctxs));
} while ((++c)->bits);
c = fifo->ramfc;
do {
nvkm_wr32(device, c->regp, 0x00000000);
} while ((++c)->bits);
nvkm_wr32(device, NV03_PFIFO_CACHE1_GET, 0);
nvkm_wr32(device, NV03_PFIFO_CACHE1_PUT, 0);
nvkm_wr32(device, NV03_PFIFO_CACHE1_PUSH1, mask);
nvkm_wr32(device, NV03_PFIFO_CACHE1_PUSH0, 1);
nvkm_wr32(device, NV04_PFIFO_CACHE1_PULL0, 1);
}
/* restore normal operation, after disabling dma mode */
nvkm_mask(device, NV04_PFIFO_MODE, 1 << chan->base.chid, 0);
nvkm_wr32(device, NV03_PFIFO_CACHES, 1);
spin_unlock_irqrestore(&fifo->base.lock, flags);
}
void
nv04_fifo_dma_init(struct nvkm_fifo_chan *base)
{
struct nv04_fifo_chan *chan = nv04_fifo_chan(base);
struct nv04_fifo *fifo = chan->fifo;
struct nvkm_device *device = fifo->base.engine.subdev.device;
u32 mask = 1 << chan->base.chid;
unsigned long flags;
spin_lock_irqsave(&fifo->base.lock, flags);
nvkm_mask(device, NV04_PFIFO_MODE, mask, mask);
spin_unlock_irqrestore(&fifo->base.lock, flags);
}
void *
nv04_fifo_dma_dtor(struct nvkm_fifo_chan *base)
{
struct nv04_fifo_chan *chan = nv04_fifo_chan(base);
struct nv04_fifo *fifo = chan->fifo;
struct nvkm_instmem *imem = fifo->base.engine.subdev.device->imem;
const struct nv04_fifo_ramfc *c = fifo->ramfc;
nvkm_kmap(imem->ramfc);
do {
nvkm_wo32(imem->ramfc, chan->ramfc + c->ctxp, 0x00000000);
} while ((++c)->bits);
nvkm_done(imem->ramfc);
return chan;
}
const struct nvkm_fifo_chan_func
nv04_fifo_dma_func = {
.dtor = nv04_fifo_dma_dtor,
.init = nv04_fifo_dma_init,
.fini = nv04_fifo_dma_fini,
.object_ctor = nv04_fifo_dma_object_ctor,
.object_dtor = nv04_fifo_dma_object_dtor,
};
static int
nv04_fifo_dma_new(struct nvkm_fifo *base, const struct nvkm_oclass *oclass,
void *data, u32 size, struct nvkm_object **pobject)
{
struct nvkm_object *parent = oclass->parent;
union {
struct nv03_channel_dma_v0 v0;
} *args = data;
struct nv04_fifo *fifo = nv04_fifo(base);
struct nv04_fifo_chan *chan = NULL;
struct nvkm_device *device = fifo->base.engine.subdev.device;
struct nvkm_instmem *imem = device->imem;
int ret = -ENOSYS;
nvif_ioctl(parent, "create channel dma size %d\n", size);
if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, false))) {
nvif_ioctl(parent, "create channel dma vers %d pushbuf %llx "
"offset %08x\n", args->v0.version,
args->v0.pushbuf, args->v0.offset);
if (!args->v0.pushbuf)
return -EINVAL;
} else
return ret;
if (!(chan = kzalloc(sizeof(*chan), GFP_KERNEL)))
return -ENOMEM;
*pobject = &chan->base.object;
ret = nvkm_fifo_chan_ctor(&nv04_fifo_dma_func, &fifo->base,
0x1000, 0x1000, false, 0, args->v0.pushbuf,
(1ULL << NVKM_ENGINE_DMAOBJ) |
(1ULL << NVKM_ENGINE_GR) |
(1ULL << NVKM_ENGINE_SW),
0, 0x800000, 0x10000, oclass, &chan->base);
chan->fifo = fifo;
if (ret)
return ret;
args->v0.chid = chan->base.chid;
chan->ramfc = chan->base.chid * 32;
nvkm_kmap(imem->ramfc);
nvkm_wo32(imem->ramfc, chan->ramfc + 0x00, args->v0.offset);
nvkm_wo32(imem->ramfc, chan->ramfc + 0x04, args->v0.offset);
nvkm_wo32(imem->ramfc, chan->ramfc + 0x08, chan->base.push->addr >> 4);
nvkm_wo32(imem->ramfc, chan->ramfc + 0x10,
NV_PFIFO_CACHE1_DMA_FETCH_TRIG_128_BYTES |
NV_PFIFO_CACHE1_DMA_FETCH_SIZE_128_BYTES |
#ifdef __BIG_ENDIAN
NV_PFIFO_CACHE1_BIG_ENDIAN |
#endif
NV_PFIFO_CACHE1_DMA_FETCH_MAX_REQS_8);
nvkm_done(imem->ramfc);
return 0;
}
const struct nvkm_fifo_chan_oclass
nv04_fifo_dma_oclass = {
.base.oclass = NV03_CHANNEL_DMA,
.base.minver = 0,
.base.maxver = 0,
.ctor = nv04_fifo_dma_new,
};
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