diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/core/core')
| -rw-r--r-- | drivers/gpu/drm/nouveau/core/core/mm.c | 175 | ||||
| -rw-r--r-- | drivers/gpu/drm/nouveau/core/core/ramht.c | 309 |
2 files changed, 484 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/core/core/mm.c b/drivers/gpu/drm/nouveau/core/core/mm.c new file mode 100644 index 000000000000..024dd2c722bb --- /dev/null +++ b/drivers/gpu/drm/nouveau/core/core/mm.c @@ -0,0 +1,175 @@ +/* + * Copyright 2010 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 "drmP.h" +#include "nouveau_drv.h" +#include <core/mm.h> + +static inline void +region_put(struct nouveau_mm *mm, struct nouveau_mm_node *a) +{ + list_del(&a->nl_entry); + list_del(&a->fl_entry); + kfree(a); +} + +static struct nouveau_mm_node * +region_split(struct nouveau_mm *mm, struct nouveau_mm_node *a, u32 size) +{ + struct nouveau_mm_node *b; + + if (a->length == size) + return a; + + b = kmalloc(sizeof(*b), GFP_KERNEL); + if (unlikely(b == NULL)) + return NULL; + + b->offset = a->offset; + b->length = size; + b->type = a->type; + a->offset += size; + a->length -= size; + list_add_tail(&b->nl_entry, &a->nl_entry); + if (b->type == 0) + list_add_tail(&b->fl_entry, &a->fl_entry); + return b; +} + +#define node(root, dir) ((root)->nl_entry.dir == &mm->nodes) ? NULL : \ + list_entry((root)->nl_entry.dir, struct nouveau_mm_node, nl_entry) + +void +nouveau_mm_put(struct nouveau_mm *mm, struct nouveau_mm_node *this) +{ + struct nouveau_mm_node *prev = node(this, prev); + struct nouveau_mm_node *next = node(this, next); + + list_add(&this->fl_entry, &mm->free); + this->type = 0; + + if (prev && prev->type == 0) { + prev->length += this->length; + region_put(mm, this); + this = prev; + } + + if (next && next->type == 0) { + next->offset = this->offset; + next->length += this->length; + region_put(mm, this); + } +} + +int +nouveau_mm_get(struct nouveau_mm *mm, int type, u32 size, u32 size_nc, + u32 align, struct nouveau_mm_node **pnode) +{ + struct nouveau_mm_node *prev, *this, *next; + u32 min = size_nc ? size_nc : size; + u32 align_mask = align - 1; + u32 splitoff; + u32 s, e; + + list_for_each_entry(this, &mm->free, fl_entry) { + e = this->offset + this->length; + s = this->offset; + + prev = node(this, prev); + if (prev && prev->type != type) + s = roundup(s, mm->block_size); + + next = node(this, next); + if (next && next->type != type) + e = rounddown(e, mm->block_size); + + s = (s + align_mask) & ~align_mask; + e &= ~align_mask; + if (s > e || e - s < min) + continue; + + splitoff = s - this->offset; + if (splitoff && !region_split(mm, this, splitoff)) + return -ENOMEM; + + this = region_split(mm, this, min(size, e - s)); + if (!this) + return -ENOMEM; + + this->type = type; + list_del(&this->fl_entry); + *pnode = this; + return 0; + } + + return -ENOSPC; +} + +int +nouveau_mm_init(struct nouveau_mm *mm, u32 offset, u32 length, u32 block) +{ + struct nouveau_mm_node *node; + + if (block) { + mutex_init(&mm->mutex); + INIT_LIST_HEAD(&mm->nodes); + INIT_LIST_HEAD(&mm->free); + mm->block_size = block; + mm->heap_nodes = 0; + } + + node = kzalloc(sizeof(*node), GFP_KERNEL); + if (!node) + return -ENOMEM; + node->offset = roundup(offset, mm->block_size); + node->length = rounddown(offset + length, mm->block_size) - node->offset; + + list_add_tail(&node->nl_entry, &mm->nodes); + list_add_tail(&node->fl_entry, &mm->free); + mm->heap_nodes++; + return 0; +} + +int +nouveau_mm_fini(struct nouveau_mm *mm) +{ + struct nouveau_mm_node *node, *heap = + list_first_entry(&mm->nodes, struct nouveau_mm_node, nl_entry); + int nodes = 0; + + list_for_each_entry(node, &mm->nodes, nl_entry) { + if (nodes++ == mm->heap_nodes) { + printk(KERN_ERR "nouveau_mm in use at destroy time!\n"); + list_for_each_entry(node, &mm->nodes, nl_entry) { + printk(KERN_ERR "0x%02x: 0x%08x 0x%08x\n", + node->type, node->offset, node->length); + } + WARN_ON(1); + return -EBUSY; + } + } + + kfree(heap); + return 0; +} diff --git a/drivers/gpu/drm/nouveau/core/core/ramht.c b/drivers/gpu/drm/nouveau/core/core/ramht.c new file mode 100644 index 000000000000..59c16192f0e4 --- /dev/null +++ b/drivers/gpu/drm/nouveau/core/core/ramht.c @@ -0,0 +1,309 @@ +/* + * Copyright 2010 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 "drmP.h" + +#include "nouveau_drv.h" +#include <core/ramht.h> + +static u32 +nouveau_ramht_hash_handle(struct nouveau_channel *chan, u32 handle) +{ + struct drm_device *dev = chan->dev; + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nouveau_ramht *ramht = chan->ramht; + u32 hash = 0; + int i; + + NV_DEBUG(dev, "ch%d handle=0x%08x\n", chan->id, handle); + + for (i = 32; i > 0; i -= ramht->bits) { + hash ^= (handle & ((1 << ramht->bits) - 1)); + handle >>= ramht->bits; + } + + if (dev_priv->card_type < NV_50) + hash ^= chan->id << (ramht->bits - 4); + hash <<= 3; + + NV_DEBUG(dev, "hash=0x%08x\n", hash); + return hash; +} + +static int +nouveau_ramht_entry_valid(struct drm_device *dev, struct nouveau_gpuobj *ramht, + u32 offset) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + u32 ctx = nv_ro32(ramht, offset + 4); + + if (dev_priv->card_type < NV_40) + return ((ctx & NV_RAMHT_CONTEXT_VALID) != 0); + return (ctx != 0); +} + +static int +nouveau_ramht_entry_same_channel(struct nouveau_channel *chan, + struct nouveau_gpuobj *ramht, u32 offset) +{ + struct drm_nouveau_private *dev_priv = chan->dev->dev_private; + u32 ctx = nv_ro32(ramht, offset + 4); + + if (dev_priv->card_type >= NV_50) + return true; + else if (dev_priv->card_type >= NV_40) + return chan->id == + ((ctx >> NV40_RAMHT_CONTEXT_CHANNEL_SHIFT) & 0x1f); + else + return chan->id == + ((ctx >> NV_RAMHT_CONTEXT_CHANNEL_SHIFT) & 0x1f); +} + +int +nouveau_ramht_insert(struct nouveau_channel *chan, u32 handle, + struct nouveau_gpuobj *gpuobj) +{ + struct drm_device *dev = chan->dev; + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nouveau_instmem_engine *instmem = &dev_priv->engine.instmem; + struct nouveau_ramht_entry *entry; + struct nouveau_gpuobj *ramht = chan->ramht->gpuobj; + unsigned long flags; + u32 ctx, co, ho; + + if (nouveau_ramht_find(chan, handle)) + return -EEXIST; + + entry = kmalloc(sizeof(*entry), GFP_KERNEL); + if (!entry) + return -ENOMEM; + entry->channel = chan; + entry->gpuobj = NULL; + entry->handle = handle; + nouveau_gpuobj_ref(gpuobj, &entry->gpuobj); + + if (dev_priv->card_type < NV_40) { + ctx = NV_RAMHT_CONTEXT_VALID | (gpuobj->pinst >> 4) | + (chan->id << NV_RAMHT_CONTEXT_CHANNEL_SHIFT) | + (gpuobj->engine << NV_RAMHT_CONTEXT_ENGINE_SHIFT); + } else + if (dev_priv->card_type < NV_50) { + ctx = (gpuobj->pinst >> 4) | + (chan->id << NV40_RAMHT_CONTEXT_CHANNEL_SHIFT) | + (gpuobj->engine << NV40_RAMHT_CONTEXT_ENGINE_SHIFT); + } else { + if (gpuobj->engine == NVOBJ_ENGINE_DISPLAY) { + ctx = (gpuobj->cinst << 10) | + (chan->id << 28) | + chan->id; /* HASH_TAG */ + } else { + ctx = (gpuobj->cinst >> 4) | + ((gpuobj->engine << + NV40_RAMHT_CONTEXT_ENGINE_SHIFT)); + } + } + + spin_lock_irqsave(&chan->ramht->lock, flags); + list_add(&entry->head, &chan->ramht->entries); + + co = ho = nouveau_ramht_hash_handle(chan, handle); + do { + if (!nouveau_ramht_entry_valid(dev, ramht, co)) { + NV_DEBUG(dev, + "insert ch%d 0x%08x: h=0x%08x, c=0x%08x\n", + chan->id, co, handle, ctx); + nv_wo32(ramht, co + 0, handle); + nv_wo32(ramht, co + 4, ctx); + + spin_unlock_irqrestore(&chan->ramht->lock, flags); + instmem->flush(dev); + return 0; + } + NV_DEBUG(dev, "collision ch%d 0x%08x: h=0x%08x\n", + chan->id, co, nv_ro32(ramht, co)); + + co += 8; + if (co >= ramht->size) + co = 0; + } while (co != ho); + + NV_ERROR(dev, "RAMHT space exhausted. ch=%d\n", chan->id); + list_del(&entry->head); + spin_unlock_irqrestore(&chan->ramht->lock, flags); + kfree(entry); + return -ENOMEM; +} + +static struct nouveau_ramht_entry * +nouveau_ramht_remove_entry(struct nouveau_channel *chan, u32 handle) +{ + struct nouveau_ramht *ramht = chan ? chan->ramht : NULL; + struct nouveau_ramht_entry *entry; + unsigned long flags; + + if (!ramht) + return NULL; + + spin_lock_irqsave(&ramht->lock, flags); + list_for_each_entry(entry, &ramht->entries, head) { + if (entry->channel == chan && + (!handle || entry->handle == handle)) { + list_del(&entry->head); + spin_unlock_irqrestore(&ramht->lock, flags); + + return entry; + } + } + spin_unlock_irqrestore(&ramht->lock, flags); + + return NULL; +} + +static void +nouveau_ramht_remove_hash(struct nouveau_channel *chan, u32 handle) +{ + struct drm_device *dev = chan->dev; + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nouveau_instmem_engine *instmem = &dev_priv->engine.instmem; + struct nouveau_gpuobj *ramht = chan->ramht->gpuobj; + unsigned long flags; + u32 co, ho; + + spin_lock_irqsave(&chan->ramht->lock, flags); + co = ho = nouveau_ramht_hash_handle(chan, handle); + do { + if (nouveau_ramht_entry_valid(dev, ramht, co) && + nouveau_ramht_entry_same_channel(chan, ramht, co) && + (handle == nv_ro32(ramht, co))) { + NV_DEBUG(dev, + "remove ch%d 0x%08x: h=0x%08x, c=0x%08x\n", + chan->id, co, handle, nv_ro32(ramht, co + 4)); + nv_wo32(ramht, co + 0, 0x00000000); + nv_wo32(ramht, co + 4, 0x00000000); + instmem->flush(dev); + goto out; + } + + co += 8; + if (co >= ramht->size) + co = 0; + } while (co != ho); + + NV_ERROR(dev, "RAMHT entry not found. ch=%d, handle=0x%08x\n", + chan->id, handle); +out: + spin_unlock_irqrestore(&chan->ramht->lock, flags); +} + +int +nouveau_ramht_remove(struct nouveau_channel *chan, u32 handle) +{ + struct nouveau_ramht_entry *entry; + + entry = nouveau_ramht_remove_entry(chan, handle); + if (!entry) + return -ENOENT; + + nouveau_ramht_remove_hash(chan, entry->handle); + nouveau_gpuobj_ref(NULL, &entry->gpuobj); + kfree(entry); + return 0; +} + +struct nouveau_gpuobj * +nouveau_ramht_find(struct nouveau_channel *chan, u32 handle) +{ + struct nouveau_ramht *ramht = chan->ramht; + struct nouveau_ramht_entry *entry; + struct nouveau_gpuobj *gpuobj = NULL; + unsigned long flags; + + if (unlikely(!chan->ramht)) + return NULL; + + spin_lock_irqsave(&ramht->lock, flags); + list_for_each_entry(entry, &chan->ramht->entries, head) { + if (entry->channel == chan && entry->handle == handle) { + gpuobj = entry->gpuobj; + break; + } + } + spin_unlock_irqrestore(&ramht->lock, flags); + + return gpuobj; +} + +int +nouveau_ramht_new(struct drm_device *dev, struct nouveau_gpuobj *gpuobj, + struct nouveau_ramht **pramht) +{ + struct nouveau_ramht *ramht; + + ramht = kzalloc(sizeof(*ramht), GFP_KERNEL); + if (!ramht) + return -ENOMEM; + + ramht->dev = dev; + kref_init(&ramht->refcount); + ramht->bits = drm_order(gpuobj->size / 8); + INIT_LIST_HEAD(&ramht->entries); + spin_lock_init(&ramht->lock); + nouveau_gpuobj_ref(gpuobj, &ramht->gpuobj); + + *pramht = ramht; + return 0; +} + +static void +nouveau_ramht_del(struct kref *ref) +{ + struct nouveau_ramht *ramht = + container_of(ref, struct nouveau_ramht, refcount); + + nouveau_gpuobj_ref(NULL, &ramht->gpuobj); + kfree(ramht); +} + +void +nouveau_ramht_ref(struct nouveau_ramht *ref, struct nouveau_ramht **ptr, + struct nouveau_channel *chan) +{ + struct nouveau_ramht_entry *entry; + struct nouveau_ramht *ramht; + + if (ref) + kref_get(&ref->refcount); + + ramht = *ptr; + if (ramht) { + while ((entry = nouveau_ramht_remove_entry(chan, 0))) { + nouveau_ramht_remove_hash(chan, entry->handle); + nouveau_gpuobj_ref(NULL, &entry->gpuobj); + kfree(entry); + } + + kref_put(&ramht->refcount, nouveau_ramht_del); + } + *ptr = ref; +} |