/*
- * Copyright 2010 Red Hat Inc.
+ * 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"),
* 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/object.h>
#include <core/ramht.h>
+#include <core/math.h>
+
+#include <subdev/bar.h>
static u32
-nouveau_ramht_hash_handle(struct nouveau_channel *chan, u32 handle)
+nouveau_ramht_hash(struct nouveau_ramht *ramht, int chid, 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) {
+ while (handle) {
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);
+ hash ^= chid << (ramht->bits - 4);
+ hash = hash << 3;
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)
+nouveau_ramht_insert(struct nouveau_ramht *ramht, int chid,
+ u32 handle, u32 context)
{
- struct drm_device *dev = chan->dev;
- struct drm_nouveau_private *dev_priv = dev->dev_private;
- 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->addr >> 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->addr >> 4) |
- (chan->id << NV40_RAMHT_CONTEXT_CHANNEL_SHIFT) |
- (gpuobj->engine << NV40_RAMHT_CONTEXT_ENGINE_SHIFT);
- } else {
- if (gpuobj->engine == NVOBJ_ENGINE_DISPLAY) {
- ctx = (gpuobj->node->offset << 10) |
- (chan->id << 28) |
- chan->id; /* HASH_TAG */
- } else {
- ctx = (gpuobj->node->offset >> 4) |
- ((gpuobj->engine <<
- NV40_RAMHT_CONTEXT_ENGINE_SHIFT));
- }
- }
-
- spin_lock_irqsave(&chan->ramht->lock, flags);
- list_add(&entry->head, &chan->ramht->entries);
+ struct nouveau_bar *bar = nouveau_bar(ramht);
+ u32 co, ho;
- co = ho = nouveau_ramht_hash_handle(chan, handle);
+ co = ho = nouveau_ramht_hash(ramht, chid, 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);
+ if (!nv_ro32(ramht, co + 4)) {
nv_wo32(ramht, co + 0, handle);
- nv_wo32(ramht, co + 4, ctx);
-
- spin_unlock_irqrestore(&chan->ramht->lock, flags);
- nvimem_flush(dev);
- return 0;
+ nv_wo32(ramht, co + 4, context);
+ if (bar)
+ bar->flush(bar);
+ return co;
}
- 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)
+ if (co >= nv_gpuobj(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 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);
- nvimem_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)
+void
+nouveau_ramht_remove(struct nouveau_ramht *ramht, int cookie)
{
- 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_bar *bar = nouveau_bar(ramht);
+ nv_wo32(ramht, cookie + 0, 0x00000000);
+ nv_wo32(ramht, cookie + 4, 0x00000000);
+ if (bar)
+ bar->flush(bar);
}
-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;
-}
+static struct nouveau_oclass
+nouveau_ramht_oclass = {
+ .handle = 0x0000abcd,
+ .ofuncs = &(struct nouveau_ofuncs) {
+ .ctor = NULL,
+ .dtor = _nouveau_gpuobj_dtor,
+ .init = _nouveau_gpuobj_init,
+ .fini = _nouveau_gpuobj_fini,
+ .rd32 = _nouveau_gpuobj_rd32,
+ .wr32 = _nouveau_gpuobj_wr32,
+ },
+};
int
-nouveau_ramht_new(struct drm_device *dev, struct nouveau_gpuobj *gpuobj,
- struct nouveau_ramht **pramht)
+nouveau_ramht_new(struct nouveau_object *parent, struct nouveau_object *pargpu,
+ u32 size, u32 align, struct nouveau_ramht **pramht)
{
struct nouveau_ramht *ramht;
+ int ret;
- 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);
-
+ ret = nouveau_gpuobj_create(parent, parent->engine ?
+ parent->engine : parent, /* <nv50 ramht */
+ &nouveau_ramht_oclass, 0, pargpu, size,
+ align, NVOBJ_FLAG_ZERO_ALLOC, &ramht);
*pramht = ramht;
- return 0;
-}
+ if (ret)
+ return ret;
-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;
+ ramht->bits = log2i(nv_gpuobj(ramht)->size >> 3);
+ return 0;
}
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