int ret;
if (dev_priv->card_type >= NV_50) {
- ret = nouveau_gpuobj_dma_new(chan, NV_CLASS_DMA_IN_MEMORY, 0,
- dev_priv->vm_end, NV_DMA_ACCESS_RO,
- NV_DMA_TARGET_AGP, &pushbuf);
+ if (dev_priv->card_type < NV_C0) {
+ ret = nouveau_gpuobj_dma_new(chan,
+ NV_CLASS_DMA_IN_MEMORY, 0,
+ (1ULL << 40),
+ NV_MEM_ACCESS_RO,
+ NV_MEM_TARGET_VM,
+ &pushbuf);
+ }
chan->pushbuf_base = pb->bo.offset;
} else
if (pb->bo.mem.mem_type == TTM_PL_TT) {
- ret = nouveau_gpuobj_gart_dma_new(chan, 0,
- dev_priv->gart_info.aper_size,
- NV_DMA_ACCESS_RO, &pushbuf,
- NULL);
+ ret = nouveau_gpuobj_dma_new(chan, NV_CLASS_DMA_IN_MEMORY, 0,
+ dev_priv->gart_info.aper_size,
+ NV_MEM_ACCESS_RO,
+ NV_MEM_TARGET_GART, &pushbuf);
chan->pushbuf_base = pb->bo.mem.start << PAGE_SHIFT;
} else
if (dev_priv->card_type != NV_04) {
ret = nouveau_gpuobj_dma_new(chan, NV_CLASS_DMA_IN_MEMORY, 0,
dev_priv->fb_available_size,
- NV_DMA_ACCESS_RO,
- NV_DMA_TARGET_VIDMEM, &pushbuf);
+ NV_MEM_ACCESS_RO,
+ NV_MEM_TARGET_VRAM, &pushbuf);
chan->pushbuf_base = pb->bo.mem.start << PAGE_SHIFT;
} else {
/* NV04 cmdbuf hack, from original ddx.. not sure of it's
* VRAM.
*/
ret = nouveau_gpuobj_dma_new(chan, NV_CLASS_DMA_IN_MEMORY,
- pci_resource_start(dev->pdev,
- 1),
+ pci_resource_start(dev->pdev, 1),
dev_priv->fb_available_size,
- NV_DMA_ACCESS_RO,
- NV_DMA_TARGET_PCI, &pushbuf);
+ NV_MEM_ACCESS_RO,
+ NV_MEM_TARGET_PCI, &pushbuf);
chan->pushbuf_base = pb->bo.mem.start << PAGE_SHIFT;
}
nouveau_gpuobj_ref(pushbuf, &chan->pushbuf);
nouveau_gpuobj_ref(NULL, &pushbuf);
- return 0;
+ return ret;
}
static struct nouveau_bo *
return NULL;
}
+ ret = nouveau_bo_map(pushbuf);
+ if (ret) {
+ nouveau_bo_unpin(pushbuf);
+ nouveau_bo_ref(NULL, &pushbuf);
+ return NULL;
+ }
+
return pushbuf;
}
int
nouveau_channel_alloc(struct drm_device *dev, struct nouveau_channel **chan_ret,
struct drm_file *file_priv,
- uint32_t vram_handle, uint32_t tt_handle)
+ uint32_t vram_handle, uint32_t gart_handle)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
- struct nouveau_pgraph_engine *pgraph = &dev_priv->engine.graph;
struct nouveau_fifo_engine *pfifo = &dev_priv->engine.fifo;
struct nouveau_channel *chan;
- int channel, user;
+ unsigned long flags;
int ret;
- /*
- * Alright, here is the full story
- * Nvidia cards have multiple hw fifo contexts (praise them for that,
- * no complicated crash-prone context switches)
- * We allocate a new context for each app and let it write to it
- * directly (woo, full userspace command submission !)
- * When there are no more contexts, you lost
- */
- for (channel = 0; channel < pfifo->channels; channel++) {
- if (dev_priv->fifos[channel] == NULL)
+ /* allocate and lock channel structure */
+ chan = kzalloc(sizeof(*chan), GFP_KERNEL);
+ if (!chan)
+ return -ENOMEM;
+ chan->dev = dev;
+ chan->file_priv = file_priv;
+ chan->vram_handle = vram_handle;
+ chan->gart_handle = gart_handle;
+
+ kref_init(&chan->ref);
+ atomic_set(&chan->users, 1);
+ mutex_init(&chan->mutex);
+ mutex_lock(&chan->mutex);
+
+ /* allocate hw channel id */
+ spin_lock_irqsave(&dev_priv->channels.lock, flags);
+ for (chan->id = 0; chan->id < pfifo->channels; chan->id++) {
+ if (!dev_priv->channels.ptr[chan->id]) {
+ nouveau_channel_ref(chan, &dev_priv->channels.ptr[chan->id]);
break;
+ }
}
+ spin_unlock_irqrestore(&dev_priv->channels.lock, flags);
- /* no more fifos. you lost. */
- if (channel == pfifo->channels)
- return -EINVAL;
+ if (chan->id == pfifo->channels) {
+ mutex_unlock(&chan->mutex);
+ kfree(chan);
+ return -ENODEV;
+ }
- dev_priv->fifos[channel] = kzalloc(sizeof(struct nouveau_channel),
- GFP_KERNEL);
- if (!dev_priv->fifos[channel])
- return -ENOMEM;
- chan = dev_priv->fifos[channel];
+ NV_DEBUG(dev, "initialising channel %d\n", chan->id);
INIT_LIST_HEAD(&chan->nvsw.vbl_wait);
+ INIT_LIST_HEAD(&chan->nvsw.flip);
INIT_LIST_HEAD(&chan->fence.pending);
- chan->dev = dev;
- chan->id = channel;
- chan->file_priv = file_priv;
- chan->vram_handle = vram_handle;
- chan->gart_handle = tt_handle;
-
- NV_INFO(dev, "Allocating FIFO number %d\n", channel);
/* Allocate DMA push buffer */
chan->pushbuf_bo = nouveau_channel_user_pushbuf_alloc(dev);
if (!chan->pushbuf_bo) {
ret = -ENOMEM;
NV_ERROR(dev, "pushbuf %d\n", ret);
- nouveau_channel_free(chan);
+ nouveau_channel_put(&chan);
return ret;
}
nouveau_dma_pre_init(chan);
-
- /* Locate channel's user control regs */
- if (dev_priv->card_type < NV_40)
- user = NV03_USER(channel);
- else
- if (dev_priv->card_type < NV_50)
- user = NV40_USER(channel);
- else
- user = NV50_USER(channel);
-
- chan->user = ioremap(pci_resource_start(dev->pdev, 0) + user,
- PAGE_SIZE);
- if (!chan->user) {
- NV_ERROR(dev, "ioremap of regs failed.\n");
- nouveau_channel_free(chan);
- return -ENOMEM;
- }
chan->user_put = 0x40;
chan->user_get = 0x44;
ret = nouveau_notifier_init_channel(chan);
if (ret) {
NV_ERROR(dev, "ntfy %d\n", ret);
- nouveau_channel_free(chan);
+ nouveau_channel_put(&chan);
return ret;
}
/* Setup channel's default objects */
- ret = nouveau_gpuobj_channel_init(chan, vram_handle, tt_handle);
+ ret = nouveau_gpuobj_channel_init(chan, vram_handle, gart_handle);
if (ret) {
NV_ERROR(dev, "gpuobj %d\n", ret);
- nouveau_channel_free(chan);
+ nouveau_channel_put(&chan);
return ret;
}
ret = nouveau_channel_pushbuf_ctxdma_init(chan);
if (ret) {
NV_ERROR(dev, "pbctxdma %d\n", ret);
- nouveau_channel_free(chan);
+ nouveau_channel_put(&chan);
return ret;
}
/* disable the fifo caches */
pfifo->reassign(dev, false);
- /* Create a graphics context for new channel */
- ret = pgraph->create_context(chan);
- if (ret) {
- nouveau_channel_free(chan);
- return ret;
- }
-
/* Construct inital RAMFC for new channel */
ret = pfifo->create_context(chan);
if (ret) {
- nouveau_channel_free(chan);
+ nouveau_channel_put(&chan);
return ret;
}
if (!ret)
ret = nouveau_fence_channel_init(chan);
if (ret) {
- nouveau_channel_free(chan);
+ nouveau_channel_put(&chan);
return ret;
}
nouveau_debugfs_channel_init(chan);
- NV_INFO(dev, "%s: initialised FIFO %d\n", __func__, channel);
+ NV_DEBUG(dev, "channel %d initialised\n", chan->id);
*chan_ret = chan;
return 0;
}
-/* stops a fifo */
+struct nouveau_channel *
+nouveau_channel_get_unlocked(struct nouveau_channel *ref)
+{
+ struct nouveau_channel *chan = NULL;
+
+ if (likely(ref && atomic_inc_not_zero(&ref->users)))
+ nouveau_channel_ref(ref, &chan);
+
+ return chan;
+}
+
+struct nouveau_channel *
+nouveau_channel_get(struct drm_device *dev, struct drm_file *file_priv, int id)
+{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ struct nouveau_channel *chan;
+ unsigned long flags;
+
+ if (unlikely(id < 0 || id >= NOUVEAU_MAX_CHANNEL_NR))
+ return ERR_PTR(-EINVAL);
+
+ spin_lock_irqsave(&dev_priv->channels.lock, flags);
+ chan = nouveau_channel_get_unlocked(dev_priv->channels.ptr[id]);
+ spin_unlock_irqrestore(&dev_priv->channels.lock, flags);
+
+ if (unlikely(!chan))
+ return ERR_PTR(-EINVAL);
+
+ if (unlikely(file_priv && chan->file_priv != file_priv)) {
+ nouveau_channel_put_unlocked(&chan);
+ return ERR_PTR(-EINVAL);
+ }
+
+ mutex_lock(&chan->mutex);
+ return chan;
+}
+
void
-nouveau_channel_free(struct nouveau_channel *chan)
+nouveau_channel_put_unlocked(struct nouveau_channel **pchan)
{
+ struct nouveau_channel *chan = *pchan;
struct drm_device *dev = chan->dev;
struct drm_nouveau_private *dev_priv = dev->dev_private;
- struct nouveau_pgraph_engine *pgraph = &dev_priv->engine.graph;
struct nouveau_fifo_engine *pfifo = &dev_priv->engine.fifo;
+ struct nouveau_pgraph_engine *pgraph = &dev_priv->engine.graph;
+ struct nouveau_crypt_engine *pcrypt = &dev_priv->engine.crypt;
unsigned long flags;
- int ret;
- NV_INFO(dev, "%s: freeing fifo %d\n", __func__, chan->id);
+ /* decrement the refcount, and we're done if there's still refs */
+ if (likely(!atomic_dec_and_test(&chan->users))) {
+ nouveau_channel_ref(NULL, pchan);
+ return;
+ }
+ /* noone wants the channel anymore */
+ NV_DEBUG(dev, "freeing channel %d\n", chan->id);
nouveau_debugfs_channel_fini(chan);
- /* Give outstanding push buffers a chance to complete */
- nouveau_fence_update(chan);
- if (chan->fence.sequence != chan->fence.sequence_ack) {
- struct nouveau_fence *fence = NULL;
+ /* give it chance to idle */
+ nouveau_channel_idle(chan);
- ret = nouveau_fence_new(chan, &fence, true);
- if (ret == 0) {
- ret = nouveau_fence_wait(fence, NULL, false, false);
- nouveau_fence_unref((void *)&fence);
- }
-
- if (ret)
- NV_ERROR(dev, "Failed to idle channel %d.\n", chan->id);
- }
-
- /* Ensure all outstanding fences are signaled. They should be if the
+ /* ensure all outstanding fences are signaled. they should be if the
* above attempts at idling were OK, but if we failed this'll tell TTM
* we're done with the buffers.
*/
nouveau_fence_channel_fini(chan);
- /* This will prevent pfifo from switching channels. */
+ /* boot it off the hardware */
pfifo->reassign(dev, false);
- /* We want to give pgraph a chance to idle and get rid of all potential
- * errors. We need to do this before the lock, otherwise the irq handler
- * is unable to process them.
+ /* We want to give pgraph a chance to idle and get rid of all
+ * potential errors. We need to do this without the context
+ * switch lock held, otherwise the irq handler is unable to
+ * process them.
*/
if (pgraph->channel(dev) == chan)
nouveau_wait_for_idle(dev);
- spin_lock_irqsave(&dev_priv->context_switch_lock, flags);
-
- pgraph->fifo_access(dev, false);
- if (pgraph->channel(dev) == chan)
- pgraph->unload_context(dev);
- pgraph->destroy_context(chan);
- pgraph->fifo_access(dev, true);
-
- if (pfifo->channel_id(dev) == chan->id) {
- pfifo->disable(dev);
- pfifo->unload_context(dev);
- pfifo->enable(dev);
- }
+ /* destroy the engine specific contexts */
pfifo->destroy_context(chan);
+ pgraph->destroy_context(chan);
+ if (pcrypt->destroy_context)
+ pcrypt->destroy_context(chan);
pfifo->reassign(dev, true);
- spin_unlock_irqrestore(&dev_priv->context_switch_lock, flags);
+ /* aside from its resources, the channel should now be dead,
+ * remove it from the channel list
+ */
+ spin_lock_irqsave(&dev_priv->channels.lock, flags);
+ nouveau_channel_ref(NULL, &dev_priv->channels.ptr[chan->id]);
+ spin_unlock_irqrestore(&dev_priv->channels.lock, flags);
- /* Release the channel's resources */
+ /* destroy any resources the channel owned */
nouveau_gpuobj_ref(NULL, &chan->pushbuf);
if (chan->pushbuf_bo) {
nouveau_bo_unmap(chan->pushbuf_bo);
}
nouveau_gpuobj_channel_takedown(chan);
nouveau_notifier_takedown_channel(chan);
- if (chan->user)
- iounmap(chan->user);
- dev_priv->fifos[chan->id] = NULL;
+ nouveau_channel_ref(NULL, pchan);
+}
+
+void
+nouveau_channel_put(struct nouveau_channel **pchan)
+{
+ mutex_unlock(&(*pchan)->mutex);
+ nouveau_channel_put_unlocked(pchan);
+}
+
+static void
+nouveau_channel_del(struct kref *ref)
+{
+ struct nouveau_channel *chan =
+ container_of(ref, struct nouveau_channel, ref);
+
kfree(chan);
}
+void
+nouveau_channel_ref(struct nouveau_channel *chan,
+ struct nouveau_channel **pchan)
+{
+ if (chan)
+ kref_get(&chan->ref);
+
+ if (*pchan)
+ kref_put(&(*pchan)->ref, nouveau_channel_del);
+
+ *pchan = chan;
+}
+
+void
+nouveau_channel_idle(struct nouveau_channel *chan)
+{
+ struct drm_device *dev = chan->dev;
+ struct nouveau_fence *fence = NULL;
+ int ret;
+
+ nouveau_fence_update(chan);
+
+ if (chan->fence.sequence != chan->fence.sequence_ack) {
+ ret = nouveau_fence_new(chan, &fence, true);
+ if (!ret) {
+ ret = nouveau_fence_wait(fence, false, false);
+ nouveau_fence_unref(&fence);
+ }
+
+ if (ret)
+ NV_ERROR(dev, "Failed to idle channel %d.\n", chan->id);
+ }
+}
+
/* cleans up all the fifos from file_priv */
void
nouveau_channel_cleanup(struct drm_device *dev, struct drm_file *file_priv)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_engine *engine = &dev_priv->engine;
+ struct nouveau_channel *chan;
int i;
NV_DEBUG(dev, "clearing FIFO enables from file_priv\n");
for (i = 0; i < engine->fifo.channels; i++) {
- struct nouveau_channel *chan = dev_priv->fifos[i];
+ chan = nouveau_channel_get(dev, file_priv, i);
+ if (IS_ERR(chan))
+ continue;
- if (chan && chan->file_priv == file_priv)
- nouveau_channel_free(chan);
+ atomic_dec(&chan->users);
+ nouveau_channel_put(&chan);
}
}
-int
-nouveau_channel_owner(struct drm_device *dev, struct drm_file *file_priv,
- int channel)
-{
- struct drm_nouveau_private *dev_priv = dev->dev_private;
- struct nouveau_engine *engine = &dev_priv->engine;
-
- if (channel >= engine->fifo.channels)
- return 0;
- if (dev_priv->fifos[channel] == NULL)
- return 0;
-
- return (dev_priv->fifos[channel]->file_priv == file_priv);
-}
/***********************************
* ioctls wrapping the functions
else
init->pushbuf_domains = NOUVEAU_GEM_DOMAIN_GART;
- init->subchan[0].handle = NvM2MF;
- if (dev_priv->card_type < NV_50)
- init->subchan[0].grclass = 0x0039;
- else
- init->subchan[0].grclass = 0x5039;
- init->subchan[1].handle = NvSw;
- init->subchan[1].grclass = NV_SW;
- init->nr_subchan = 2;
+ if (dev_priv->card_type < NV_C0) {
+ init->subchan[0].handle = NvM2MF;
+ if (dev_priv->card_type < NV_50)
+ init->subchan[0].grclass = 0x0039;
+ else
+ init->subchan[0].grclass = 0x5039;
+ init->subchan[1].handle = NvSw;
+ init->subchan[1].grclass = NV_SW;
+ init->nr_subchan = 2;
+ } else {
+ init->subchan[0].handle = 0x9039;
+ init->subchan[0].grclass = 0x9039;
+ init->nr_subchan = 1;
+ }
/* Named memory object area */
ret = drm_gem_handle_create(file_priv, chan->notifier_bo->gem,
&init->notifier_handle);
- if (ret) {
- nouveau_channel_free(chan);
- return ret;
- }
- return 0;
+ if (ret == 0)
+ atomic_inc(&chan->users); /* userspace reference */
+ nouveau_channel_put(&chan);
+ return ret;
}
static int
nouveau_ioctl_fifo_free(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
- struct drm_nouveau_channel_free *cfree = data;
+ struct drm_nouveau_channel_free *req = data;
struct nouveau_channel *chan;
- NOUVEAU_GET_USER_CHANNEL_WITH_RETURN(cfree->channel, file_priv, chan);
+ chan = nouveau_channel_get(dev, file_priv, req->channel);
+ if (IS_ERR(chan))
+ return PTR_ERR(chan);
- nouveau_channel_free(chan);
+ atomic_dec(&chan->users);
+ nouveau_channel_put(&chan);
return 0;
}
***********************************/
struct drm_ioctl_desc nouveau_ioctls[] = {
- DRM_IOCTL_DEF_DRV(NOUVEAU_GETPARAM, nouveau_ioctl_getparam, DRM_AUTH),
- DRM_IOCTL_DEF_DRV(NOUVEAU_SETPARAM, nouveau_ioctl_setparam, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
- DRM_IOCTL_DEF_DRV(NOUVEAU_CHANNEL_ALLOC, nouveau_ioctl_fifo_alloc, DRM_AUTH),
- DRM_IOCTL_DEF_DRV(NOUVEAU_CHANNEL_FREE, nouveau_ioctl_fifo_free, DRM_AUTH),
- DRM_IOCTL_DEF_DRV(NOUVEAU_GROBJ_ALLOC, nouveau_ioctl_grobj_alloc, DRM_AUTH),
- DRM_IOCTL_DEF_DRV(NOUVEAU_NOTIFIEROBJ_ALLOC, nouveau_ioctl_notifier_alloc, DRM_AUTH),
- DRM_IOCTL_DEF_DRV(NOUVEAU_GPUOBJ_FREE, nouveau_ioctl_gpuobj_free, DRM_AUTH),
- DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_NEW, nouveau_gem_ioctl_new, DRM_AUTH),
- DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_PUSHBUF, nouveau_gem_ioctl_pushbuf, DRM_AUTH),
- DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_CPU_PREP, nouveau_gem_ioctl_cpu_prep, DRM_AUTH),
- DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_CPU_FINI, nouveau_gem_ioctl_cpu_fini, DRM_AUTH),
- DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_INFO, nouveau_gem_ioctl_info, DRM_AUTH),
+ DRM_IOCTL_DEF_DRV(NOUVEAU_GETPARAM, nouveau_ioctl_getparam, DRM_UNLOCKED|DRM_AUTH),
+ DRM_IOCTL_DEF_DRV(NOUVEAU_SETPARAM, nouveau_ioctl_setparam, DRM_UNLOCKED|DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
+ DRM_IOCTL_DEF_DRV(NOUVEAU_CHANNEL_ALLOC, nouveau_ioctl_fifo_alloc, DRM_UNLOCKED|DRM_AUTH),
+ DRM_IOCTL_DEF_DRV(NOUVEAU_CHANNEL_FREE, nouveau_ioctl_fifo_free, DRM_UNLOCKED|DRM_AUTH),
+ DRM_IOCTL_DEF_DRV(NOUVEAU_GROBJ_ALLOC, nouveau_ioctl_grobj_alloc, DRM_UNLOCKED|DRM_AUTH),
+ DRM_IOCTL_DEF_DRV(NOUVEAU_NOTIFIEROBJ_ALLOC, nouveau_ioctl_notifier_alloc, DRM_UNLOCKED|DRM_AUTH),
+ DRM_IOCTL_DEF_DRV(NOUVEAU_GPUOBJ_FREE, nouveau_ioctl_gpuobj_free, DRM_UNLOCKED|DRM_AUTH),
+ DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_NEW, nouveau_gem_ioctl_new, DRM_UNLOCKED|DRM_AUTH),
+ DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_PUSHBUF, nouveau_gem_ioctl_pushbuf, DRM_UNLOCKED|DRM_AUTH),
+ DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_CPU_PREP, nouveau_gem_ioctl_cpu_prep, DRM_UNLOCKED|DRM_AUTH),
+ DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_CPU_FINI, nouveau_gem_ioctl_cpu_fini, DRM_UNLOCKED|DRM_AUTH),
+ DRM_IOCTL_DEF_DRV(NOUVEAU_GEM_INFO, nouveau_gem_ioctl_info, DRM_UNLOCKED|DRM_AUTH),
};
int nouveau_max_ioctl = DRM_ARRAY_SIZE(nouveau_ioctls);
projects / mv-sheeva.git / blobdiff