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path: root/drivers/gpu/drm/nouveau/nouveau_object.c
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Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_object.c')
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_object.c1294
1 files changed, 1294 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_object.c b/drivers/gpu/drm/nouveau/nouveau_object.c
new file mode 100644
index 000000000000..93379bb81bea
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nouveau_object.c
@@ -0,0 +1,1294 @@
+/*
+ * Copyright (C) 2006 Ben Skeggs.
+ *
+ * All Rights Reserved.
+ *
+ * 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 (including the
+ * next paragraph) 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 OWNER(S) AND/OR ITS SUPPLIERS 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 <darktama@iinet.net.au>
+ */
+
+#include "drmP.h"
+#include "drm.h"
+#include "nouveau_drv.h"
+#include "nouveau_drm.h"
+
+/* NVidia uses context objects to drive drawing operations.
+
+ Context objects can be selected into 8 subchannels in the FIFO,
+ and then used via DMA command buffers.
+
+ A context object is referenced by a user defined handle (CARD32). The HW
+ looks up graphics objects in a hash table in the instance RAM.
+
+ An entry in the hash table consists of 2 CARD32. The first CARD32 contains
+ the handle, the second one a bitfield, that contains the address of the
+ object in instance RAM.
+
+ The format of the second CARD32 seems to be:
+
+ NV4 to NV30:
+
+ 15: 0 instance_addr >> 4
+ 17:16 engine (here uses 1 = graphics)
+ 28:24 channel id (here uses 0)
+ 31 valid (use 1)
+
+ NV40:
+
+ 15: 0 instance_addr >> 4 (maybe 19-0)
+ 21:20 engine (here uses 1 = graphics)
+ I'm unsure about the other bits, but using 0 seems to work.
+
+ The key into the hash table depends on the object handle and channel id and
+ is given as:
+*/
+static uint32_t
+nouveau_ramht_hash_handle(struct drm_device *dev, int channel, uint32_t handle)
+{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ uint32_t hash = 0;
+ int i;
+
+ NV_DEBUG(dev, "ch%d handle=0x%08x\n", channel, handle);
+
+ for (i = 32; i > 0; i -= dev_priv->ramht_bits) {
+ hash ^= (handle & ((1 << dev_priv->ramht_bits) - 1));
+ handle >>= dev_priv->ramht_bits;
+ }
+
+ if (dev_priv->card_type < NV_50)
+ hash ^= channel << (dev_priv->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,
+ uint32_t offset)
+{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ uint32_t ctx = nv_ro32(dev, ramht, (offset + 4)/4);
+
+ if (dev_priv->card_type < NV_40)
+ return ((ctx & NV_RAMHT_CONTEXT_VALID) != 0);
+ return (ctx != 0);
+}
+
+static int
+nouveau_ramht_insert(struct drm_device *dev, struct nouveau_gpuobj_ref *ref)
+{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ struct nouveau_instmem_engine *instmem = &dev_priv->engine.instmem;
+ struct nouveau_channel *chan = ref->channel;
+ struct nouveau_gpuobj *ramht = chan->ramht ? chan->ramht->gpuobj : NULL;
+ uint32_t ctx, co, ho;
+
+ if (!ramht) {
+ NV_ERROR(dev, "No hash table!\n");
+ return -EINVAL;
+ }
+
+ if (dev_priv->card_type < NV_40) {
+ ctx = NV_RAMHT_CONTEXT_VALID | (ref->instance >> 4) |
+ (chan->id << NV_RAMHT_CONTEXT_CHANNEL_SHIFT) |
+ (ref->gpuobj->engine << NV_RAMHT_CONTEXT_ENGINE_SHIFT);
+ } else
+ if (dev_priv->card_type < NV_50) {
+ ctx = (ref->instance >> 4) |
+ (chan->id << NV40_RAMHT_CONTEXT_CHANNEL_SHIFT) |
+ (ref->gpuobj->engine << NV40_RAMHT_CONTEXT_ENGINE_SHIFT);
+ } else {
+ if (ref->gpuobj->engine == NVOBJ_ENGINE_DISPLAY) {
+ ctx = (ref->instance << 10) | 2;
+ } else {
+ ctx = (ref->instance >> 4) |
+ ((ref->gpuobj->engine <<
+ NV40_RAMHT_CONTEXT_ENGINE_SHIFT));
+ }
+ }
+
+ instmem->prepare_access(dev, true);
+ co = ho = nouveau_ramht_hash_handle(dev, chan->id, ref->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, ref->handle, ctx);
+ nv_wo32(dev, ramht, (co + 0)/4, ref->handle);
+ nv_wo32(dev, ramht, (co + 4)/4, ctx);
+
+ list_add_tail(&ref->list, &chan->ramht_refs);
+ instmem->finish_access(dev);
+ return 0;
+ }
+ NV_DEBUG(dev, "collision ch%d 0x%08x: h=0x%08x\n",
+ chan->id, co, nv_ro32(dev, ramht, co/4));
+
+ co += 8;
+ if (co >= dev_priv->ramht_size)
+ co = 0;
+ } while (co != ho);
+ instmem->finish_access(dev);
+
+ NV_ERROR(dev, "RAMHT space exhausted. ch=%d\n", chan->id);
+ return -ENOMEM;
+}
+
+static void
+nouveau_ramht_remove(struct drm_device *dev, struct nouveau_gpuobj_ref *ref)
+{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ struct nouveau_instmem_engine *instmem = &dev_priv->engine.instmem;
+ struct nouveau_channel *chan = ref->channel;
+ struct nouveau_gpuobj *ramht = chan->ramht ? chan->ramht->gpuobj : NULL;
+ uint32_t co, ho;
+
+ if (!ramht) {
+ NV_ERROR(dev, "No hash table!\n");
+ return;
+ }
+
+ instmem->prepare_access(dev, true);
+ co = ho = nouveau_ramht_hash_handle(dev, chan->id, ref->handle);
+ do {
+ if (nouveau_ramht_entry_valid(dev, ramht, co) &&
+ (ref->handle == nv_ro32(dev, ramht, (co/4)))) {
+ NV_DEBUG(dev,
+ "remove ch%d 0x%08x: h=0x%08x, c=0x%08x\n",
+ chan->id, co, ref->handle,
+ nv_ro32(dev, ramht, (co + 4)));
+ nv_wo32(dev, ramht, (co + 0)/4, 0x00000000);
+ nv_wo32(dev, ramht, (co + 4)/4, 0x00000000);
+
+ list_del(&ref->list);
+ instmem->finish_access(dev);
+ return;
+ }
+
+ co += 8;
+ if (co >= dev_priv->ramht_size)
+ co = 0;
+ } while (co != ho);
+ list_del(&ref->list);
+ instmem->finish_access(dev);
+
+ NV_ERROR(dev, "RAMHT entry not found. ch=%d, handle=0x%08x\n",
+ chan->id, ref->handle);
+}
+
+int
+nouveau_gpuobj_new(struct drm_device *dev, struct nouveau_channel *chan,
+ uint32_t size, int align, uint32_t flags,
+ struct nouveau_gpuobj **gpuobj_ret)
+{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ struct nouveau_engine *engine = &dev_priv->engine;
+ struct nouveau_gpuobj *gpuobj;
+ struct mem_block *pramin = NULL;
+ int ret;
+
+ NV_DEBUG(dev, "ch%d size=%u align=%d flags=0x%08x\n",
+ chan ? chan->id : -1, size, align, flags);
+
+ if (!dev_priv || !gpuobj_ret || *gpuobj_ret != NULL)
+ return -EINVAL;
+
+ gpuobj = kzalloc(sizeof(*gpuobj), GFP_KERNEL);
+ if (!gpuobj)
+ return -ENOMEM;
+ NV_DEBUG(dev, "gpuobj %p\n", gpuobj);
+ gpuobj->flags = flags;
+ gpuobj->im_channel = chan;
+
+ list_add_tail(&gpuobj->list, &dev_priv->gpuobj_list);
+
+ /* Choose between global instmem heap, and per-channel private
+ * instmem heap. On <NV50 allow requests for private instmem
+ * to be satisfied from global heap if no per-channel area
+ * available.
+ */
+ if (chan) {
+ if (chan->ramin_heap) {
+ NV_DEBUG(dev, "private heap\n");
+ pramin = chan->ramin_heap;
+ } else
+ if (dev_priv->card_type < NV_50) {
+ NV_DEBUG(dev, "global heap fallback\n");
+ pramin = dev_priv->ramin_heap;
+ }
+ } else {
+ NV_DEBUG(dev, "global heap\n");
+ pramin = dev_priv->ramin_heap;
+ }
+
+ if (!pramin) {
+ NV_ERROR(dev, "No PRAMIN heap!\n");
+ return -EINVAL;
+ }
+
+ if (!chan) {
+ ret = engine->instmem.populate(dev, gpuobj, &size);
+ if (ret) {
+ nouveau_gpuobj_del(dev, &gpuobj);
+ return ret;
+ }
+ }
+
+ /* Allocate a chunk of the PRAMIN aperture */
+ gpuobj->im_pramin = nouveau_mem_alloc_block(pramin, size,
+ drm_order(align),
+ (struct drm_file *)-2, 0);
+ if (!gpuobj->im_pramin) {
+ nouveau_gpuobj_del(dev, &gpuobj);
+ return -ENOMEM;
+ }
+
+ if (!chan) {
+ ret = engine->instmem.bind(dev, gpuobj);
+ if (ret) {
+ nouveau_gpuobj_del(dev, &gpuobj);
+ return ret;
+ }
+ }
+
+ if (gpuobj->flags & NVOBJ_FLAG_ZERO_ALLOC) {
+ int i;
+
+ engine->instmem.prepare_access(dev, true);
+ for (i = 0; i < gpuobj->im_pramin->size; i += 4)
+ nv_wo32(dev, gpuobj, i/4, 0);
+ engine->instmem.finish_access(dev);
+ }
+
+ *gpuobj_ret = gpuobj;
+ return 0;
+}
+
+int
+nouveau_gpuobj_early_init(struct drm_device *dev)
+{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+
+ NV_DEBUG(dev, "\n");
+
+ INIT_LIST_HEAD(&dev_priv->gpuobj_list);
+
+ return 0;
+}
+
+int
+nouveau_gpuobj_init(struct drm_device *dev)
+{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ int ret;
+
+ NV_DEBUG(dev, "\n");
+
+ if (dev_priv->card_type < NV_50) {
+ ret = nouveau_gpuobj_new_fake(dev,
+ dev_priv->ramht_offset, ~0, dev_priv->ramht_size,
+ NVOBJ_FLAG_ZERO_ALLOC | NVOBJ_FLAG_ALLOW_NO_REFS,
+ &dev_priv->ramht, NULL);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+void
+nouveau_gpuobj_takedown(struct drm_device *dev)
+{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+
+ NV_DEBUG(dev, "\n");
+
+ nouveau_gpuobj_del(dev, &dev_priv->ramht);
+}
+
+void
+nouveau_gpuobj_late_takedown(struct drm_device *dev)
+{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ struct nouveau_gpuobj *gpuobj = NULL;
+ struct list_head *entry, *tmp;
+
+ NV_DEBUG(dev, "\n");
+
+ list_for_each_safe(entry, tmp, &dev_priv->gpuobj_list) {
+ gpuobj = list_entry(entry, struct nouveau_gpuobj, list);
+
+ NV_ERROR(dev, "gpuobj %p still exists at takedown, refs=%d\n",
+ gpuobj, gpuobj->refcount);
+ gpuobj->refcount = 0;
+ nouveau_gpuobj_del(dev, &gpuobj);
+ }
+}
+
+int
+nouveau_gpuobj_del(struct drm_device *dev, struct nouveau_gpuobj **pgpuobj)
+{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ struct nouveau_engine *engine = &dev_priv->engine;
+ struct nouveau_gpuobj *gpuobj;
+ int i;
+
+ NV_DEBUG(dev, "gpuobj %p\n", pgpuobj ? *pgpuobj : NULL);
+
+ if (!dev_priv || !pgpuobj || !(*pgpuobj))
+ return -EINVAL;
+ gpuobj = *pgpuobj;
+
+ if (gpuobj->refcount != 0) {
+ NV_ERROR(dev, "gpuobj refcount is %d\n", gpuobj->refcount);
+ return -EINVAL;
+ }
+
+ if (gpuobj->im_pramin && (gpuobj->flags & NVOBJ_FLAG_ZERO_FREE)) {
+ engine->instmem.prepare_access(dev, true);
+ for (i = 0; i < gpuobj->im_pramin->size; i += 4)
+ nv_wo32(dev, gpuobj, i/4, 0);
+ engine->instmem.finish_access(dev);
+ }
+
+ if (gpuobj->dtor)
+ gpuobj->dtor(dev, gpuobj);
+
+ if (gpuobj->im_backing && !(gpuobj->flags & NVOBJ_FLAG_FAKE))
+ engine->instmem.clear(dev, gpuobj);
+
+ if (gpuobj->im_pramin) {
+ if (gpuobj->flags & NVOBJ_FLAG_FAKE)
+ kfree(gpuobj->im_pramin);
+ else
+ nouveau_mem_free_block(gpuobj->im_pramin);
+ }
+
+ list_del(&gpuobj->list);
+
+ *pgpuobj = NULL;
+ kfree(gpuobj);
+ return 0;
+}
+
+static int
+nouveau_gpuobj_instance_get(struct drm_device *dev,
+ struct nouveau_channel *chan,
+ struct nouveau_gpuobj *gpuobj, uint32_t *inst)
+{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ struct nouveau_gpuobj *cpramin;
+
+ /* <NV50 use PRAMIN address everywhere */
+ if (dev_priv->card_type < NV_50) {
+ *inst = gpuobj->im_pramin->start;
+ return 0;
+ }
+
+ if (chan && gpuobj->im_channel != chan) {
+ NV_ERROR(dev, "Channel mismatch: obj %d, ref %d\n",
+ gpuobj->im_channel->id, chan->id);
+ return -EINVAL;
+ }
+
+ /* NV50 channel-local instance */
+ if (chan) {
+ cpramin = chan->ramin->gpuobj;
+ *inst = gpuobj->im_pramin->start - cpramin->im_pramin->start;
+ return 0;
+ }
+
+ /* NV50 global (VRAM) instance */
+ if (!gpuobj->im_channel) {
+ /* ...from global heap */
+ if (!gpuobj->im_backing) {
+ NV_ERROR(dev, "AII, no VRAM backing gpuobj\n");
+ return -EINVAL;
+ }
+ *inst = gpuobj->im_backing_start;
+ return 0;
+ } else {
+ /* ...from local heap */
+ cpramin = gpuobj->im_channel->ramin->gpuobj;
+ *inst = cpramin->im_backing_start +
+ (gpuobj->im_pramin->start - cpramin->im_pramin->start);
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+int
+nouveau_gpuobj_ref_add(struct drm_device *dev, struct nouveau_channel *chan,
+ uint32_t handle, struct nouveau_gpuobj *gpuobj,
+ struct nouveau_gpuobj_ref **ref_ret)
+{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ struct nouveau_gpuobj_ref *ref;
+ uint32_t instance;
+ int ret;
+
+ NV_DEBUG(dev, "ch%d h=0x%08x gpuobj=%p\n",
+ chan ? chan->id : -1, handle, gpuobj);
+
+ if (!dev_priv || !gpuobj || (ref_ret && *ref_ret != NULL))
+ return -EINVAL;
+
+ if (!chan && !ref_ret)
+ return -EINVAL;
+
+ if (gpuobj->engine == NVOBJ_ENGINE_SW && !gpuobj->im_pramin) {
+ /* sw object */
+ instance = 0x40;
+ } else {
+ ret = nouveau_gpuobj_instance_get(dev, chan, gpuobj, &instance);
+ if (ret)
+ return ret;
+ }
+
+ ref = kzalloc(sizeof(*ref), GFP_KERNEL);
+ if (!ref)
+ return -ENOMEM;
+ INIT_LIST_HEAD(&ref->list);
+ ref->gpuobj = gpuobj;
+ ref->channel = chan;
+ ref->instance = instance;
+
+ if (!ref_ret) {
+ ref->handle = handle;
+
+ ret = nouveau_ramht_insert(dev, ref);
+ if (ret) {
+ kfree(ref);
+ return ret;
+ }
+ } else {
+ ref->handle = ~0;
+ *ref_ret = ref;
+ }
+
+ ref->gpuobj->refcount++;
+ return 0;
+}
+
+int nouveau_gpuobj_ref_del(struct drm_device *dev, struct nouveau_gpuobj_ref **pref)
+{
+ struct nouveau_gpuobj_ref *ref;
+
+ NV_DEBUG(dev, "ref %p\n", pref ? *pref : NULL);
+
+ if (!dev || !pref || *pref == NULL)
+ return -EINVAL;
+ ref = *pref;
+
+ if (ref->handle != ~0)
+ nouveau_ramht_remove(dev, ref);
+
+ if (ref->gpuobj) {
+ ref->gpuobj->refcount--;
+
+ if (ref->gpuobj->refcount == 0) {
+ if (!(ref->gpuobj->flags & NVOBJ_FLAG_ALLOW_NO_REFS))
+ nouveau_gpuobj_del(dev, &ref->gpuobj);
+ }
+ }
+
+ *pref = NULL;
+ kfree(ref);
+ return 0;
+}
+
+int
+nouveau_gpuobj_new_ref(struct drm_device *dev,
+ struct nouveau_channel *oc, struct nouveau_channel *rc,
+ uint32_t handle, uint32_t size, int align,
+ uint32_t flags, struct nouveau_gpuobj_ref **ref)
+{
+ struct nouveau_gpuobj *gpuobj = NULL;
+ int ret;
+
+ ret = nouveau_gpuobj_new(dev, oc, size, align, flags, &gpuobj);
+ if (ret)
+ return ret;
+
+ ret = nouveau_gpuobj_ref_add(dev, rc, handle, gpuobj, ref);
+ if (ret) {
+ nouveau_gpuobj_del(dev, &gpuobj);
+ return ret;
+ }
+
+ return 0;
+}
+
+int
+nouveau_gpuobj_ref_find(struct nouveau_channel *chan, uint32_t handle,
+ struct nouveau_gpuobj_ref **ref_ret)
+{
+ struct nouveau_gpuobj_ref *ref;
+ struct list_head *entry, *tmp;
+
+ list_for_each_safe(entry, tmp, &chan->ramht_refs) {
+ ref = list_entry(entry, struct nouveau_gpuobj_ref, list);
+
+ if (ref->handle == handle) {
+ if (ref_ret)
+ *ref_ret = ref;
+ return 0;
+ }
+ }
+
+ return -EINVAL;
+}
+
+int
+nouveau_gpuobj_new_fake(struct drm_device *dev, uint32_t p_offset,
+ uint32_t b_offset, uint32_t size,
+ uint32_t flags, struct nouveau_gpuobj **pgpuobj,
+ struct nouveau_gpuobj_ref **pref)
+{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ struct nouveau_gpuobj *gpuobj = NULL;
+ int i;
+
+ NV_DEBUG(dev,
+ "p_offset=0x%08x b_offset=0x%08x size=0x%08x flags=0x%08x\n",
+ p_offset, b_offset, size, flags);
+
+ gpuobj = kzalloc(sizeof(*gpuobj), GFP_KERNEL);
+ if (!gpuobj)
+ return -ENOMEM;
+ NV_DEBUG(dev, "gpuobj %p\n", gpuobj);
+ gpuobj->im_channel = NULL;
+ gpuobj->flags = flags | NVOBJ_FLAG_FAKE;
+
+ list_add_tail(&gpuobj->list, &dev_priv->gpuobj_list);
+
+ if (p_offset != ~0) {
+ gpuobj->im_pramin = kzalloc(sizeof(struct mem_block),
+ GFP_KERNEL);
+ if (!gpuobj->im_pramin) {
+ nouveau_gpuobj_del(dev, &gpuobj);
+ return -ENOMEM;
+ }
+ gpuobj->im_pramin->start = p_offset;
+ gpuobj->im_pramin->size = size;
+ }
+
+ if (b_offset != ~0) {
+ gpuobj->im_backing = (struct nouveau_bo *)-1;
+ gpuobj->im_backing_start = b_offset;
+ }
+
+ if (gpuobj->flags & NVOBJ_FLAG_ZERO_ALLOC) {
+ dev_priv->engine.instmem.prepare_access(dev, true);
+ for (i = 0; i < gpuobj->im_pramin->size; i += 4)
+ nv_wo32(dev, gpuobj, i/4, 0);
+ dev_priv->engine.instmem.finish_access(dev);
+ }
+
+ if (pref) {
+ i = nouveau_gpuobj_ref_add(dev, NULL, 0, gpuobj, pref);
+ if (i) {
+ nouveau_gpuobj_del(dev, &gpuobj);
+ return i;
+ }
+ }
+
+ if (pgpuobj)
+ *pgpuobj = gpuobj;
+ return 0;
+}
+
+
+static uint32_t
+nouveau_gpuobj_class_instmem_size(struct drm_device *dev, int class)
+{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+
+ /*XXX: dodgy hack for now */
+ if (dev_priv->card_type >= NV_50)
+ return 24;
+ if (dev_priv->card_type >= NV_40)
+ return 32;
+ return 16;
+}
+
+/*
+ DMA objects are used to reference a piece of memory in the
+ framebuffer, PCI or AGP address space. Each object is 16 bytes big
+ and looks as follows:
+
+ entry[0]
+ 11:0 class (seems like I can always use 0 here)
+ 12 page table present?
+ 13 page entry linear?
+ 15:14 access: 0 rw, 1 ro, 2 wo
+ 17:16 target: 0 NV memory, 1 NV memory tiled, 2 PCI, 3 AGP
+ 31:20 dma adjust (bits 0-11 of the address)
+ entry[1]
+ dma limit (size of transfer)
+ entry[X]
+ 1 0 readonly, 1 readwrite
+ 31:12 dma frame address of the page (bits 12-31 of the address)
+ entry[N]
+ page table terminator, same value as the first pte, as does nvidia
+ rivatv uses 0xffffffff
+
+ Non linear page tables need a list of frame addresses afterwards,
+ the rivatv project has some info on this.
+
+ The method below creates a DMA object in instance RAM and returns a handle
+ to it that can be used to set up context objects.
+*/
+int
+nouveau_gpuobj_dma_new(struct nouveau_channel *chan, int class,
+ uint64_t offset, uint64_t size, int access,
+ int target, 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;
+ int ret;
+
+ NV_DEBUG(dev, "ch%d class=0x%04x offset=0x%llx size=0x%llx\n",
+ chan->id, class, offset, size);
+ NV_DEBUG(dev, "access=%d target=%d\n", access, target);
+
+ switch (target) {
+ case NV_DMA_TARGET_AGP:
+ offset += dev_priv->gart_info.aper_base;
+ break;
+ default:
+ break;
+ }
+
+ ret = nouveau_gpuobj_new(dev, chan,
+ nouveau_gpuobj_class_instmem_size(dev, class),
+ 16, NVOBJ_FLAG_ZERO_ALLOC |
+ NVOBJ_FLAG_ZERO_FREE, gpuobj);
+ if (ret) {
+ NV_ERROR(dev, "Error creating gpuobj: %d\n", ret);
+ return ret;
+ }
+
+ instmem->prepare_access(dev, true);
+
+ if (dev_priv->card_type < NV_50) {
+ uint32_t frame, adjust, pte_flags = 0;
+
+ if (access != NV_DMA_ACCESS_RO)
+ pte_flags |= (1<<1);
+ adjust = offset & 0x00000fff;
+ frame = offset & ~0x00000fff;
+
+ nv_wo32(dev, *gpuobj, 0, ((1<<12) | (1<<13) |
+ (adjust << 20) |
+ (access << 14) |
+ (target << 16) |
+ class));
+ nv_wo32(dev, *gpuobj, 1, size - 1);
+ nv_wo32(dev, *gpuobj, 2, frame | pte_flags);
+ nv_wo32(dev, *gpuobj, 3, frame | pte_flags);
+ } else {
+ uint64_t limit = offset + size - 1;
+ uint32_t flags0, flags5;
+
+ if (target == NV_DMA_TARGET_VIDMEM) {
+ flags0 = 0x00190000;
+ flags5 = 0x00010000;
+ } else {
+ flags0 = 0x7fc00000;
+ flags5 = 0x00080000;
+ }
+
+ nv_wo32(dev, *gpuobj, 0, flags0 | class);
+ nv_wo32(dev, *gpuobj, 1, lower_32_bits(limit));
+ nv_wo32(dev, *gpuobj, 2, lower_32_bits(offset));
+ nv_wo32(dev, *gpuobj, 3, ((upper_32_bits(limit) & 0xff) << 24) |
+ (upper_32_bits(offset) & 0xff));
+ nv_wo32(dev, *gpuobj, 5, flags5);
+ }
+
+ instmem->finish_access(dev);
+
+ (*gpuobj)->engine = NVOBJ_ENGINE_SW;
+ (*gpuobj)->class = class;
+ return 0;
+}
+
+int
+nouveau_gpuobj_gart_dma_new(struct nouveau_channel *chan,
+ uint64_t offset, uint64_t size, int access,
+ struct nouveau_gpuobj **gpuobj,
+ uint32_t *o_ret)
+{
+ struct drm_device *dev = chan->dev;
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ int ret;
+
+ if (dev_priv->gart_info.type == NOUVEAU_GART_AGP ||
+ (dev_priv->card_type >= NV_50 &&
+ dev_priv->gart_info.type == NOUVEAU_GART_SGDMA)) {
+ ret = nouveau_gpuobj_dma_new(chan, NV_CLASS_DMA_IN_MEMORY,
+ offset + dev_priv->vm_gart_base,
+ size, access, NV_DMA_TARGET_AGP,
+ gpuobj);
+ if (o_ret)
+ *o_ret = 0;
+ } else
+ if (dev_priv->gart_info.type == NOUVEAU_GART_SGDMA) {
+ *gpuobj = dev_priv->gart_info.sg_ctxdma;
+ if (offset & ~0xffffffffULL) {
+ NV_ERROR(dev, "obj offset exceeds 32-bits\n");
+ return -EINVAL;
+ }
+ if (o_ret)
+ *o_ret = (uint32_t)offset;
+ ret = (*gpuobj != NULL) ? 0 : -EINVAL;
+ } else {
+ NV_ERROR(dev, "Invalid GART type %d\n", dev_priv->gart_info.type);
+ return -EINVAL;
+ }
+
+ return ret;
+}
+
+/* Context objects in the instance RAM have the following structure.
+ * On NV40 they are 32 byte long, on NV30 and smaller 16 bytes.
+
+ NV4 - NV30:
+
+ entry[0]
+ 11:0 class
+ 12 chroma key enable
+ 13 user clip enable
+ 14 swizzle enable
+ 17:15 patch config:
+ scrcopy_and, rop_and, blend_and, scrcopy, srccopy_pre, blend_pre
+ 18 synchronize enable
+ 19 endian: 1 big, 0 little
+ 21:20 dither mode
+ 23 single step enable
+ 24 patch status: 0 invalid, 1 valid
+ 25 context_surface 0: 1 valid
+ 26 context surface 1: 1 valid
+ 27 context pattern: 1 valid
+ 28 context rop: 1 valid
+ 29,30 context beta, beta4
+ entry[1]
+ 7:0 mono format
+ 15:8 color format
+ 31:16 notify instance address
+ entry[2]
+ 15:0 dma 0 instance address
+ 31:16 dma 1 instance address
+ entry[3]
+ dma method traps
+
+ NV40:
+ No idea what the exact format is. Here's what can be deducted:
+
+ entry[0]:
+ 11:0 class (maybe uses more bits here?)
+ 17 user clip enable
+ 21:19 patch config
+ 25 patch status valid ?
+ entry[1]:
+ 15:0 DMA notifier (maybe 20:0)
+ entry[2]:
+ 15:0 DMA 0 instance (maybe 20:0)
+ 24 big endian
+ entry[3]:
+ 15:0 DMA 1 instance (maybe 20:0)
+ entry[4]:
+ entry[5]:
+ set to 0?
+*/
+int
+nouveau_gpuobj_gr_new(struct nouveau_channel *chan, int class,
+ struct nouveau_gpuobj **gpuobj)
+{
+ struct drm_device *dev = chan->dev;
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ int ret;
+
+ NV_DEBUG(dev, "ch%d class=0x%04x\n", chan->id, class);
+
+ ret = nouveau_gpuobj_new(dev, chan,
+ nouveau_gpuobj_class_instmem_size(dev, class),
+ 16,
+ NVOBJ_FLAG_ZERO_ALLOC | NVOBJ_FLAG_ZERO_FREE,
+ gpuobj);
+ if (ret) {
+ NV_ERROR(dev, "Error creating gpuobj: %d\n", ret);
+ return ret;
+ }
+
+ dev_priv->engine.instmem.prepare_access(dev, true);
+ if (dev_priv->card_type >= NV_50) {
+ nv_wo32(dev, *gpuobj, 0, class);
+ nv_wo32(dev, *gpuobj, 5, 0x00010000);
+ } else {
+ switch (class) {
+ case NV_CLASS_NULL:
+ nv_wo32(dev, *gpuobj, 0, 0x00001030);
+ nv_wo32(dev, *gpuobj, 1, 0xFFFFFFFF);
+ break;
+ default:
+ if (dev_priv->card_type >= NV_40) {
+ nv_wo32(dev, *gpuobj, 0, class);
+#ifdef __BIG_ENDIAN
+ nv_wo32(dev, *gpuobj, 2, 0x01000000);
+#endif
+ } else {
+#ifdef __BIG_ENDIAN
+ nv_wo32(dev, *gpuobj, 0, class | 0x00080000);
+#else
+ nv_wo32(dev, *gpuobj, 0, class);
+#endif
+ }
+ }
+ }
+ dev_priv->engine.instmem.finish_access(dev);
+
+ (*gpuobj)->engine = NVOBJ_ENGINE_GR;
+ (*gpuobj)->class = class;
+ return 0;
+}
+
+static int
+nouveau_gpuobj_sw_new(struct nouveau_channel *chan, int class,
+ struct nouveau_gpuobj **gpuobj_ret)
+{
+ struct drm_nouveau_private *dev_priv = chan->dev->dev_private;
+ struct nouveau_gpuobj *gpuobj;
+
+ if (!chan || !gpuobj_ret || *gpuobj_ret != NULL)
+ return -EINVAL;
+
+ gpuobj = kzalloc(sizeof(*gpuobj), GFP_KERNEL);
+ if (!gpuobj)
+ return -ENOMEM;
+ gpuobj->engine = NVOBJ_ENGINE_SW;
+ gpuobj->class = class;
+
+ list_add_tail(&gpuobj->list, &dev_priv->gpuobj_list);
+ *gpuobj_ret = gpuobj;
+ return 0;
+}
+
+static int
+nouveau_gpuobj_channel_init_pramin(struct nouveau_channel *chan)
+{
+ struct drm_device *dev = chan->dev;
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ struct nouveau_gpuobj *pramin = NULL;
+ uint32_t size;
+ uint32_t base;
+ int ret;
+
+ NV_DEBUG(dev, "ch%d\n", chan->id);
+
+ /* Base amount for object storage (4KiB enough?) */
+ size = 0x1000;
+ base = 0;
+
+ /* PGRAPH context */
+
+ if (dev_priv->card_type == NV_50) {
+ /* Various fixed table thingos */
+ size += 0x1400; /* mostly unknown stuff */
+ size += 0x4000; /* vm pd */
+ base = 0x6000;
+ /* RAMHT, not sure about setting size yet, 32KiB to be safe */
+ size += 0x8000;
+ /* RAMFC */
+ size += 0x1000;
+ /* PGRAPH context */
+ size += 0x70000;
+ }
+
+ NV_DEBUG(dev, "ch%d PRAMIN size: 0x%08x bytes, base alloc=0x%08x\n",
+ chan->id, size, base);
+ ret = nouveau_gpuobj_new_ref(dev, NULL, NULL, 0, size, 0x1000, 0,
+ &chan->ramin);
+ if (ret) {
+ NV_ERROR(dev, "Error allocating channel PRAMIN: %d\n", ret);
+ return ret;
+ }
+ pramin = chan->ramin->gpuobj;
+
+ ret = nouveau_mem_init_heap(&chan->ramin_heap,
+ pramin->im_pramin->start + base, size);
+ if (ret) {
+ NV_ERROR(dev, "Error creating PRAMIN heap: %d\n", ret);
+ nouveau_gpuobj_ref_del(dev, &chan->ramin);
+ return ret;
+ }
+
+ return 0;
+}
+
+int
+nouveau_gpuobj_channel_init(struct nouveau_channel *chan,
+ uint32_t vram_h, uint32_t tt_h)
+{
+ 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 *vram = NULL, *tt = NULL;
+ int ret, i;
+
+ INIT_LIST_HEAD(&chan->ramht_refs);
+
+ NV_DEBUG(dev, "ch%d vram=0x%08x tt=0x%08x\n", chan->id, vram_h, tt_h);
+
+ /* Reserve a block of PRAMIN for the channel
+ *XXX: maybe on <NV50 too at some point
+ */
+ if (0 || dev_priv->card_type == NV_50) {
+ ret = nouveau_gpuobj_channel_init_pramin(chan);
+ if (ret) {
+ NV_ERROR(dev, "init pramin\n");
+ return ret;
+ }
+ }
+
+ /* NV50 VM
+ * - Allocate per-channel page-directory
+ * - Map GART and VRAM into the channel's address space at the
+ * locations determined during init.
+ */
+ if (dev_priv->card_type >= NV_50) {
+ uint32_t vm_offset, pde;
+
+ instmem->prepare_access(dev, true);
+
+ vm_offset = (dev_priv->chipset & 0xf0) == 0x50 ? 0x1400 : 0x200;
+ vm_offset += chan->ramin->gpuobj->im_pramin->start;
+
+ ret = nouveau_gpuobj_new_fake(dev, vm_offset, ~0, 0x4000,
+ 0, &chan->vm_pd, NULL);
+ if (ret) {
+ instmem->finish_access(dev);
+ return ret;
+ }
+ for (i = 0; i < 0x4000; i += 8) {
+ nv_wo32(dev, chan->vm_pd, (i+0)/4, 0x00000000);
+ nv_wo32(dev, chan->vm_pd, (i+4)/4, 0xdeadcafe);
+ }
+
+ pde = (dev_priv->vm_gart_base / (512*1024*1024)) * 2;
+ ret = nouveau_gpuobj_ref_add(dev, NULL, 0,
+ dev_priv->gart_info.sg_ctxdma,
+ &chan->vm_gart_pt);
+ if (ret) {
+ instmem->finish_access(dev);
+ return ret;
+ }
+ nv_wo32(dev, chan->vm_pd, pde++,
+ chan->vm_gart_pt->instance | 0x03);
+ nv_wo32(dev, chan->vm_pd, pde++, 0x00000000);
+
+ pde = (dev_priv->vm_vram_base / (512*1024*1024)) * 2;
+ for (i = 0; i < dev_priv->vm_vram_pt_nr; i++) {
+ ret = nouveau_gpuobj_ref_add(dev, NULL, 0,
+ dev_priv->vm_vram_pt[i],
+ &chan->vm_vram_pt[i]);
+ if (ret) {
+ instmem->finish_access(dev);
+ return ret;
+ }
+
+ nv_wo32(dev, chan->vm_pd, pde++,
+ chan->vm_vram_pt[i]->instance | 0x61);
+ nv_wo32(dev, chan->vm_pd, pde++, 0x00000000);
+ }
+
+ instmem->finish_access(dev);
+ }
+
+ /* RAMHT */
+ if (dev_priv->card_type < NV_50) {
+ ret = nouveau_gpuobj_ref_add(dev, NULL, 0, dev_priv->ramht,
+ &chan->ramht);
+ if (ret)
+ return ret;
+ } else {
+ ret = nouveau_gpuobj_new_ref(dev, chan, chan, 0,
+ 0x8000, 16,
+ NVOBJ_FLAG_ZERO_ALLOC,
+ &chan->ramht);
+ if (ret)
+ return ret;
+ }
+
+ /* VRAM ctxdma */
+ 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_RW,
+ NV_DMA_TARGET_AGP, &vram);
+ if (ret) {
+ NV_ERROR(dev, "Error creating VRAM ctxdma: %d\n", ret);
+ return ret;
+ }
+ } else {
+ ret = nouveau_gpuobj_dma_new(chan, NV_CLASS_DMA_IN_MEMORY,
+ 0, dev_priv->fb_available_size,
+ NV_DMA_ACCESS_RW,
+ NV_DMA_TARGET_VIDMEM, &vram);
+ if (ret) {
+ NV_ERROR(dev, "Error creating VRAM ctxdma: %d\n", ret);
+ return ret;
+ }
+ }
+
+ ret = nouveau_gpuobj_ref_add(dev, chan, vram_h, vram, NULL);
+ if (ret) {
+ NV_ERROR(dev, "Error referencing VRAM ctxdma: %d\n", ret);
+ return ret;
+ }
+
+ /* TT memory ctxdma */
+ if (dev_priv->card_type >= NV_50) {
+ tt = vram;
+ } else
+ if (dev_priv->gart_info.type != NOUVEAU_GART_NONE) {
+ ret = nouveau_gpuobj_gart_dma_new(chan, 0,
+ dev_priv->gart_info.aper_size,
+ NV_DMA_ACCESS_RW, &tt, NULL);
+ } else {
+ NV_ERROR(dev, "Invalid GART type %d\n", dev_priv->gart_info.type);
+ ret = -EINVAL;
+ }
+
+ if (ret) {
+ NV_ERROR(dev, "Error creating TT ctxdma: %d\n", ret);
+ return ret;
+ }
+
+ ret = nouveau_gpuobj_ref_add(dev, chan, tt_h, tt, NULL);
+ if (ret) {
+ NV_ERROR(dev, "Error referencing TT ctxdma: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+void
+nouveau_gpuobj_channel_takedown(struct nouveau_channel *chan)
+{
+ struct drm_nouveau_private *dev_priv = chan->dev->dev_private;
+ struct drm_device *dev = chan->dev;
+ struct list_head *entry, *tmp;
+ struct nouveau_gpuobj_ref *ref;
+ int i;
+
+ NV_DEBUG(dev, "ch%d\n", chan->id);
+
+ if (!chan->ramht_refs.next)
+ return;
+
+ list_for_each_safe(entry, tmp, &chan->ramht_refs) {
+ ref = list_entry(entry, struct nouveau_gpuobj_ref, list);
+
+ nouveau_gpuobj_ref_del(dev, &ref);
+ }
+
+ nouveau_gpuobj_ref_del(dev, &chan->ramht);
+
+ nouveau_gpuobj_del(dev, &chan->vm_pd);
+ nouveau_gpuobj_ref_del(dev, &chan->vm_gart_pt);
+ for (i = 0; i < dev_priv->vm_vram_pt_nr; i++)
+ nouveau_gpuobj_ref_del(dev, &chan->vm_vram_pt[i]);
+
+ if (chan->ramin_heap)
+ nouveau_mem_takedown(&chan->ramin_heap);
+ if (chan->ramin)
+ nouveau_gpuobj_ref_del(dev, &chan->ramin);
+
+}
+
+int
+nouveau_gpuobj_suspend(struct drm_device *dev)
+{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ struct nouveau_gpuobj *gpuobj;
+ int i;
+
+ if (dev_priv->card_type < NV_50) {
+ dev_priv->susres.ramin_copy = vmalloc(dev_priv->ramin_rsvd_vram);
+ if (!dev_priv->susres.ramin_copy)
+ return -ENOMEM;
+
+ for (i = 0; i < dev_priv->ramin_rsvd_vram; i += 4)
+ dev_priv->susres.ramin_copy[i/4] = nv_ri32(dev, i);
+ return 0;
+ }
+
+ list_for_each_entry(gpuobj, &dev_priv->gpuobj_list, list) {
+ if (!gpuobj->im_backing || (gpuobj->flags & NVOBJ_FLAG_FAKE))
+ continue;
+
+ gpuobj->im_backing_suspend = vmalloc(gpuobj->im_pramin->size);
+ if (!gpuobj->im_backing_suspend) {
+ nouveau_gpuobj_resume(dev);
+ return -ENOMEM;
+ }
+
+ dev_priv->engine.instmem.prepare_access(dev, false);
+ for (i = 0; i < gpuobj->im_pramin->size / 4; i++)
+ gpuobj->im_backing_suspend[i] = nv_ro32(dev, gpuobj, i);
+ dev_priv->engine.instmem.finish_access(dev);
+ }
+
+ return 0;
+}
+
+void
+nouveau_gpuobj_suspend_cleanup(struct drm_device *dev)
+{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ struct nouveau_gpuobj *gpuobj;
+
+ if (dev_priv->card_type < NV_50) {
+ vfree(dev_priv->susres.ramin_copy);
+ dev_priv->susres.ramin_copy = NULL;
+ return;
+ }
+
+ list_for_each_entry(gpuobj, &dev_priv->gpuobj_list, list) {
+ if (!gpuobj->im_backing_suspend)
+ continue;
+
+ vfree(gpuobj->im_backing_suspend);
+ gpuobj->im_backing_suspend = NULL;
+ }
+}
+
+void
+nouveau_gpuobj_resume(struct drm_device *dev)
+{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ struct nouveau_gpuobj *gpuobj;
+ int i;
+
+ if (dev_priv->card_type < NV_50) {
+ for (i = 0; i < dev_priv->ramin_rsvd_vram; i += 4)
+ nv_wi32(dev, i, dev_priv->susres.ramin_copy[i/4]);
+ nouveau_gpuobj_suspend_cleanup(dev);
+ return;
+ }
+
+ list_for_each_entry(gpuobj, &dev_priv->gpuobj_list, list) {
+ if (!gpuobj->im_backing_suspend)
+ continue;
+
+ dev_priv->engine.instmem.prepare_access(dev, true);
+ for (i = 0; i < gpuobj->im_pramin->size / 4; i++)
+ nv_wo32(dev, gpuobj, i, gpuobj->im_backing_suspend[i]);
+ dev_priv->engine.instmem.finish_access(dev);
+ }
+
+ nouveau_gpuobj_suspend_cleanup(dev);
+}
+
+int nouveau_ioctl_grobj_alloc(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ struct drm_nouveau_grobj_alloc *init = data;
+ struct nouveau_pgraph_engine *pgraph = &dev_priv->engine.graph;
+ struct nouveau_pgraph_object_class *grc;
+ struct nouveau_gpuobj *gr = NULL;
+ struct nouveau_channel *chan;
+ int ret;
+
+ NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
+ NOUVEAU_GET_USER_CHANNEL_WITH_RETURN(init->channel, file_priv, chan);
+
+ if (init->handle == ~0)
+ return -EINVAL;
+
+ grc = pgraph->grclass;
+ while (grc->id) {
+ if (grc->id == init->class)
+ break;
+ grc++;
+ }
+
+ if (!grc->id) {
+ NV_ERROR(dev, "Illegal object class: 0x%x\n", init->class);
+ return -EPERM;
+ }
+
+ if (nouveau_gpuobj_ref_find(chan, init->handle, NULL) == 0)
+ return -EEXIST;
+
+ if (!grc->software)
+ ret = nouveau_gpuobj_gr_new(chan, grc->id, &gr);
+ else
+ ret = nouveau_gpuobj_sw_new(chan, grc->id, &gr);
+
+ if (ret) {
+ NV_ERROR(dev, "Error creating object: %d (%d/0x%08x)\n",
+ ret, init->channel, init->handle);
+ return ret;
+ }
+
+ ret = nouveau_gpuobj_ref_add(dev, chan, init->handle, gr, NULL);
+ if (ret) {
+ NV_ERROR(dev, "Error referencing object: %d (%d/0x%08x)\n",
+ ret, init->channel, init->handle);
+ nouveau_gpuobj_del(dev, &gr);
+ return ret;
+ }
+
+ return 0;
+}
+
+int nouveau_ioctl_gpuobj_free(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ struct drm_nouveau_gpuobj_free *objfree = data;
+ struct nouveau_gpuobj_ref *ref;
+ struct nouveau_channel *chan;
+ int ret;
+
+ NOUVEAU_CHECK_INITIALISED_WITH_RETURN;
+ NOUVEAU_GET_USER_CHANNEL_WITH_RETURN(objfree->channel, file_priv, chan);
+
+ ret = nouveau_gpuobj_ref_find(chan, objfree->handle, &ref);
+ if (ret)
+ return ret;
+ nouveau_gpuobj_ref_del(dev, &ref);
+
+ return 0;
+}