Merge remote branch 'nouveau/for-airlied' of /ssd/git/drm-nouveau-next into drm-core-next

* 'nouveau/for-airlied' of /ssd/git/drm-nouveau-next:
  drm/nouveau: fix earlier mistake when fixing merge conflict
  drm/nvc0: fix thinko in instmem suspend/resume
  drm/nouveau: Workaround missing GPIO tables on an Apple iMac G4 NV18.
  drm/nouveau: Add TV-out quirk for an MSI nForce2 IGP.
  drm/nv50-nvc0: ramht_size is meant to be in bytes, not entries
  drm/nouveau: punt some more log messages to debug level
  drm/nouveau: remove warning about unknown tmds table revisions
  drm/nouveau: check for error when allocating/mapping dummy page
  drm/nouveau: fix race condition when under memory pressure
  drm/nv50: fix minor thinko from nvc0 changes
  drm/nouveau: Don't try DDC on the dummy I2C channel.

1 files changed, 26 insertions, 10 deletions

diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c
index 0f417ac1b696..79fc5ffff226 100644
--- a/drivers/gpu/drm/nouveau/nouveau_gem.c
+++ b/drivers/gpu/drm/nouveau/nouveau_gem.c
@@ -361,16 +361,11 @@ validate_list(struct nouveau_channel *chan, struct list_head *list,
 
         list_for_each_entry(nvbo, list, entry) {
                 struct drm_nouveau_gem_pushbuf_bo *b = &pbbo[nvbo->pbbo_index];
-                struct nouveau_fence *prev_fence = nvbo->bo.sync_obj;
 
-                if (prev_fence && nouveau_fence_channel(prev_fence) != chan) {
-                        spin_lock(&nvbo->bo.lock);
-                        ret = ttm_bo_wait(&nvbo->bo, false, false, false);
-                        spin_unlock(&nvbo->bo.lock);
-                        if (unlikely(ret)) {
-                                NV_ERROR(dev, "fail wait other chan\n");
-                                return ret;
-                        }
+                ret = nouveau_bo_sync_gpu(nvbo, chan);
+                if (unlikely(ret)) {
+                        NV_ERROR(dev, "fail pre-validate sync\n");
+                        return ret;
                 }
 
                 ret = nouveau_gem_set_domain(nvbo->gem, b->read_domains,
@@ -381,7 +376,7 @@ validate_list(struct nouveau_channel *chan, struct list_head *list,
                         return ret;
                 }
 
-                nvbo->channel = chan;
+                nvbo->channel = (b->read_domains & (1 << 31)) ? NULL : chan;
                 ret = ttm_bo_validate(&nvbo->bo, &nvbo->placement,
                                       false, false, false);
                 nvbo->channel = NULL;
@@ -390,6 +385,12 @@ validate_list(struct nouveau_channel *chan, struct list_head *list,
                         return ret;
                 }
 
+                ret = nouveau_bo_sync_gpu(nvbo, chan);
+                if (unlikely(ret)) {
+                        NV_ERROR(dev, "fail post-validate sync\n");
+                        return ret;
+                }
+
                 if (nvbo->bo.offset == b->presumed.offset &&
                     ((nvbo->bo.mem.mem_type == TTM_PL_VRAM &&
                       b->presumed.domain & NOUVEAU_GEM_DOMAIN_VRAM) ||
@@ -615,6 +616,21 @@ nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data,
 
         mutex_lock(&dev->struct_mutex);
 
+        /* Mark push buffers as being used on PFIFO, the validation code
+         * will then make sure that if the pushbuf bo moves, that they
+         * happen on the kernel channel, which will in turn cause a sync
+         * to happen before we try and submit the push buffer.
+         */
+        for (i = 0; i < req->nr_push; i++) {
+                if (push[i].bo_index >= req->nr_buffers) {
+                        NV_ERROR(dev, "push %d buffer not in list\n", i);
+                        ret = -EINVAL;
+                        goto out;
+                }
+
+                bo[push[i].bo_index].read_domains |= (1 << 31);
+        }
+
         /* Validate buffer list */
         ret = nouveau_gem_pushbuf_validate(chan, file_priv, bo, req->buffers,
                                            req->nr_buffers, &op, &do_reloc);