int
nouveau_fifo_channel_create_(struct nouveau_object *parent,
struct nouveau_object *engine,
struct nouveau_oclass *oclass,
int bar, u32 addr, u32 size, u32 pushbuf,
u64 engmask, int len, void **ptr)
{
struct nouveau_device *device = nv_device(engine);
struct nouveau_fifo *priv = (void *)engine;
struct nouveau_fifo_chan *chan;
struct nouveau_dmaeng *dmaeng;
unsigned long flags;
int ret;
/* create base object class */
ret = nouveau_namedb_create_(parent, engine, oclass, 0, NULL,
engmask, len, ptr);
chan = *ptr;
if (ret)
return ret;
/* validate dma object representing push buffer */
chan->pushdma = (void *)nouveau_handle_ref(parent, pushbuf);
if (!chan->pushdma)
return -ENOENT;
dmaeng = (void *)chan->pushdma->base.engine;
switch (chan->pushdma->base.oclass->handle) {
case NV_DMA_FROM_MEMORY_CLASS:
case NV_DMA_IN_MEMORY_CLASS:
break;
default:
return -EINVAL;
}
ret = dmaeng->bind(dmaeng, parent, chan->pushdma, &chan->pushgpu);
if (ret)
return ret;
/* find a free fifo channel */
spin_lock_irqsave(&priv->lock, flags);
for (chan->chid = priv->min; chan->chid < priv->max; chan->chid++) {
if (!priv->channel[chan->chid]) {
priv->channel[chan->chid] = nv_object(chan);
break;
}
}
spin_unlock_irqrestore(&priv->lock, flags);
if (chan->chid == priv->max) {
nv_error(priv, "no free channels\n");
return -ENOSPC;
}
/* map fifo control registers */
#ifdef __NetBSD__
if (bar == 0) {
/*
* We already map BAR 0 in the engine device base, so
* grab a subregion of that.
*/
bus_space_tag_t mmiot = nv_subdev(device)->mmiot;
bus_space_handle_t mmioh = nv_subdev(device)->mmioh;
bus_size_t mmiosz = nv_subdev(device)->mmiosz;
/* Check whether it lies inside the region. */
if (mmiosz < addr ||
mmiosz - addr < chan->chid*size ||
mmiosz - addr - chan->chid*size < size) {
ret = EIO;
nv_error(priv, "fifo channel out of range:"
" addr 0x%"PRIxMAX
" chid 0x%"PRIxMAX" size 0x%"PRIxMAX
" mmiosz 0x%"PRIxMAX"\n",
(uintmax_t)addr,
(uintmax_t)chan->chid, (uintmax_t)size,
(uintmax_t)mmiosz);
return ret;
}
/* Grab a subregion. */
/* XXX errno NetBSD->Linux */
ret = -bus_space_subregion(mmiot, mmioh,
(addr + chan->chid*size), size, &chan->bsh);
if (ret) {
nv_error(priv, "bus_space_subregion failed: %d\n",
ret);
return ret;
}
/* Success! No need to unmap a subregion. */
chan->mapped = false;
chan->bst = mmiot;
} else {
chan->bst = nv_device_resource_tag(device, bar);
/* XXX errno NetBSD->Linux */
ret = -bus_space_map(chan->bst,
(nv_device_resource_start(device, bar) +
addr + (chan->chid * size)),
size, 0, &chan->bsh);
if (ret) {
nv_error(priv, "failed to map fifo channel:"
" bar %d addr %"PRIxMAX" + %"PRIxMAX
" + (%"PRIxMAX" * %"PRIxMAX") = %"PRIxMAX
" size %"PRIxMAX": %d\n",
bar,
(uintmax_t)nv_device_resource_start(device, bar),
(uintmax_t)addr,
(uintmax_t)chan->chid,
(uintmax_t)size,
(uintmax_t)(nv_device_resource_start(device, bar) +
addr + (chan->chid * size)),
(uintmax_t)size,
ret);
return ret;
}
chan->mapped = true;
}
#else
chan->user = ioremap(nv_device_resource_start(device, bar) + addr +
(chan->chid * size), size);
if (!chan->user)
return -EFAULT;
#endif
nouveau_event_trigger(priv->cevent, 0);
chan->size = size;
return 0;
}
int
nouveau_fifo_channel_create_(struct nouveau_object *parent,
struct nouveau_object *engine,
struct nouveau_oclass *oclass,
int bar, u32 addr, u32 size, u32 pushbuf,
u64 engmask, int len, void **ptr)
{
struct nouveau_device *device = nv_device(engine);
struct nouveau_fifo *priv = (void *)engine;
struct nouveau_fifo_chan *chan;
struct nouveau_dmaeng *dmaeng;
unsigned long flags;
int ret;
/* create base object class */
ret = nouveau_namedb_create_(parent, engine, oclass, 0, NULL,
engmask, len, ptr);
chan = *ptr;
if (ret)
return ret;
/* validate dma object representing push buffer */
chan->pushdma = (void *)nouveau_handle_ref(parent, pushbuf);
if (!chan->pushdma)
return -ENOENT;
dmaeng = (void *)chan->pushdma->base.engine;
switch (chan->pushdma->base.oclass->handle) {
case NV_DMA_FROM_MEMORY_CLASS:
case NV_DMA_IN_MEMORY_CLASS:
break;
default:
return -EINVAL;
}
ret = dmaeng->bind(dmaeng, parent, chan->pushdma, &chan->pushgpu);
if (ret)
return ret;
/* find a free fifo channel */
spin_lock_irqsave(&priv->lock, flags);
for (chan->chid = priv->min; chan->chid < priv->max; chan->chid++) {
if (!priv->channel[chan->chid]) {
priv->channel[chan->chid] = nv_object(chan);
break;
}
}
spin_unlock_irqrestore(&priv->lock, flags);
if (chan->chid == priv->max) {
nv_error(priv, "no free channels\n");
return -ENOSPC;
}
/* map fifo control registers */
#ifdef __NetBSD__
chan->bst = nv_device_resource_tag(device, bar);
/* XXX errno NetBSD->Linux */
ret = -bus_space_map(chan->bst, nv_device_resource_start(device, bar) +
addr + (chan->chid * size), size, 0, &chan->bsh);
if (ret)
return ret;
chan->mapped = true;
#else
chan->user = ioremap(nv_device_resource_start(device, bar) + addr +
(chan->chid * size), size);
if (!chan->user)
return -EFAULT;
#endif
nouveau_event_trigger(priv->cevent, 0);
chan->size = size;
return 0;
}
