Merge branch 'drm-nouveau-fixes' of git://anongit.freedesktop.org/git/nouveau/linux-2.6 into drm-fixes

* 'drm-nouveau-fixes' of git://anongit.freedesktop.org/git/nouveau/linux-2.6:
  drm/nouveau: fix assumption that semaphore dmaobj is valid in x-chan sync
  drm/nv50/disp: fix gamma with page flipping overlay turned on
  drm/nouveau/pm: Prevent overflow in nouveau_perf_init()
  drm/nouveau: fix big-endian switch

4 files changed, 46 insertions, 39 deletions

diff --git a/drivers/gpu/drm/nouveau/nouveau_fence.c b/drivers/gpu/drm/nouveau/nouveau_fence.c
index 4b9f4493c9f9..7347075ca5b8 100644
--- a/drivers/gpu/drm/nouveau/nouveau_fence.c
+++ b/drivers/gpu/drm/nouveau/nouveau_fence.c
@@ -339,11 +339,12 @@ semaphore_acquire(struct nouveau_channel *chan, struct nouveau_semaphore *sema)
         int ret;
 
         if (dev_priv->chipset < 0x84) {
-                ret = RING_SPACE(chan, 3);
+                ret = RING_SPACE(chan, 4);
                 if (ret)
                         return ret;
 
-                BEGIN_RING(chan, NvSubSw, NV_SW_SEMAPHORE_OFFSET, 2);
+                BEGIN_RING(chan, NvSubSw, NV_SW_DMA_SEMAPHORE, 3);
+                OUT_RING  (chan, NvSema);
                 OUT_RING  (chan, sema->mem->start);
                 OUT_RING  (chan, 1);
         } else
@@ -351,10 +352,12 @@ semaphore_acquire(struct nouveau_channel *chan, struct nouveau_semaphore *sema)
                 struct nouveau_vma *vma = &dev_priv->fence.bo->vma;
                 u64 offset = vma->offset + sema->mem->start;
 
-                ret = RING_SPACE(chan, 5);
+                ret = RING_SPACE(chan, 7);
                 if (ret)
                         return ret;
 
+                BEGIN_RING(chan, NvSubSw, NV_SW_DMA_SEMAPHORE, 1);
+                OUT_RING  (chan, chan->vram_handle);
                 BEGIN_RING(chan, NvSubSw, 0x0010, 4);
                 OUT_RING  (chan, upper_32_bits(offset));
                 OUT_RING  (chan, lower_32_bits(offset));
@@ -394,11 +397,12 @@ semaphore_release(struct nouveau_channel *chan, struct nouveau_semaphore *sema)
         int ret;
 
         if (dev_priv->chipset < 0x84) {
-                ret = RING_SPACE(chan, 4);
+                ret = RING_SPACE(chan, 5);
                 if (ret)
                         return ret;
 
-                BEGIN_RING(chan, NvSubSw, NV_SW_SEMAPHORE_OFFSET, 1);
+                BEGIN_RING(chan, NvSubSw, NV_SW_DMA_SEMAPHORE, 2);
+                OUT_RING  (chan, NvSema);
                 OUT_RING  (chan, sema->mem->start);
                 BEGIN_RING(chan, NvSubSw, NV_SW_SEMAPHORE_RELEASE, 1);
                 OUT_RING  (chan, 1);
@@ -407,10 +411,12 @@ semaphore_release(struct nouveau_channel *chan, struct nouveau_semaphore *sema)
                 struct nouveau_vma *vma = &dev_priv->fence.bo->vma;
                 u64 offset = vma->offset + sema->mem->start;
 
-                ret = RING_SPACE(chan, 5);
+                ret = RING_SPACE(chan, 7);
                 if (ret)
                         return ret;
 
+                BEGIN_RING(chan, NvSubSw, NV_SW_DMA_SEMAPHORE, 1);
+                OUT_RING  (chan, chan->vram_handle);
                 BEGIN_RING(chan, NvSubSw, 0x0010, 4);
                 OUT_RING  (chan, upper_32_bits(offset));
                 OUT_RING  (chan, lower_32_bits(offset));
@@ -504,22 +510,22 @@ nouveau_fence_channel_init(struct nouveau_channel *chan)
         struct nouveau_gpuobj *obj = NULL;
         int ret;
 
-        if (dev_priv->card_type >= NV_C0)
-                goto out_initialised;
+        if (dev_priv->card_type < NV_C0) {
+                /* Create an NV_SW object for various sync purposes */
+                ret = nouveau_gpuobj_gr_new(chan, NvSw, NV_SW);
+                if (ret)
+                        return ret;
 
-        /* Create an NV_SW object for various sync purposes */
-        ret = nouveau_gpuobj_gr_new(chan, NvSw, NV_SW);
-        if (ret)
-                return ret;
+                ret = RING_SPACE(chan, 2);
+                if (ret)
+                        return ret;
 
-        /* we leave subchannel empty for nvc0 */
-        ret = RING_SPACE(chan, 2);
-        if (ret)
-                return ret;
-        BEGIN_RING(chan, NvSubSw, 0, 1);
-        OUT_RING(chan, NvSw);
+                BEGIN_RING(chan, NvSubSw, 0, 1);
+                OUT_RING  (chan, NvSw);
+                FIRE_RING (chan);
+        }
 
-        /* Create a DMA object for the shared cross-channel sync area. */
+        /* Setup area of memory shared between all channels for x-chan sync */
         if (USE_SEMA(dev) && dev_priv->chipset < 0x84) {
                 struct ttm_mem_reg *mem = &dev_priv->fence.bo->bo.mem;
 
@@ -534,23 +540,8 @@ nouveau_fence_channel_init(struct nouveau_channel *chan)
                 nouveau_gpuobj_ref(NULL, &obj);
                 if (ret)
                         return ret;
-
-                ret = RING_SPACE(chan, 2);
-                if (ret)
-                        return ret;
-                BEGIN_RING(chan, NvSubSw, NV_SW_DMA_SEMAPHORE, 1);
-                OUT_RING(chan, NvSema);
-        } else {
-                ret = RING_SPACE(chan, 2);
-                if (ret)
-                        return ret;
-                BEGIN_RING(chan, NvSubSw, NV_SW_DMA_SEMAPHORE, 1);
-                OUT_RING  (chan, chan->vram_handle); /* whole VM */
         }
 
-        FIRE_RING(chan);
-
-out_initialised:
         INIT_LIST_HEAD(&chan->fence.pending);
         spin_lock_init(&chan->fence.lock);
         atomic_set(&chan->fence.last_sequence_irq, 0);
diff --git a/drivers/gpu/drm/nouveau/nouveau_perf.c b/drivers/gpu/drm/nouveau/nouveau_perf.c
index 922fb6b664ed..ef9dec0e6f8b 100644
--- a/drivers/gpu/drm/nouveau/nouveau_perf.c
+++ b/drivers/gpu/drm/nouveau/nouveau_perf.c
@@ -182,6 +182,11 @@ nouveau_perf_init(struct drm_device *dev)
                 entries   = perf[2];
         }
 
+        if (entries > NOUVEAU_PM_MAX_LEVEL) {
+                NV_DEBUG(dev, "perf table has too many entries - buggy vbios?\n");
+                entries = NOUVEAU_PM_MAX_LEVEL;
+        }
+
         entry = perf + headerlen;
         for (i = 0; i < entries; i++) {
                 struct nouveau_pm_level *perflvl = &pm->perflvl[pm->nr_perflvl];
diff --git a/drivers/gpu/drm/nouveau/nouveau_state.c b/drivers/gpu/drm/nouveau/nouveau_state.c
index 80218887e0a0..144f79a350ae 100644
--- a/drivers/gpu/drm/nouveau/nouveau_state.c
+++ b/drivers/gpu/drm/nouveau/nouveau_state.c
@@ -881,8 +881,8 @@ int nouveau_load(struct drm_device *dev, unsigned long flags)
 
 #ifdef __BIG_ENDIAN
         /* Put the card in BE mode if it's not */
-        if (nv_rd32(dev, NV03_PMC_BOOT_1))
-                nv_wr32(dev, NV03_PMC_BOOT_1, 0x00000001);
+        if (nv_rd32(dev, NV03_PMC_BOOT_1) != 0x01000001)
+                nv_wr32(dev, NV03_PMC_BOOT_1, 0x01000001);
 
         DRM_MEMORYBARRIER();
 #endif
diff --git a/drivers/gpu/drm/nouveau/nv50_display.c b/drivers/gpu/drm/nouveau/nv50_display.c
index 74a3f6872701..08da478ba544 100644
--- a/drivers/gpu/drm/nouveau/nv50_display.c
+++ b/drivers/gpu/drm/nouveau/nv50_display.c
@@ -409,7 +409,7 @@ nv50_display_flip_next(struct drm_crtc *crtc, struct drm_framebuffer *fb,
         struct nouveau_channel *evo = dispc->sync;
         int ret;
 
-        ret = RING_SPACE(evo, 24);
+        ret = RING_SPACE(evo, chan ? 25 : 27);
         if (unlikely(ret))
                 return ret;
 
@@ -458,8 +458,19 @@ nv50_display_flip_next(struct drm_crtc *crtc, struct drm_framebuffer *fb,
         /* queue the flip on the crtc's "display sync" channel */
         BEGIN_RING(evo, 0, 0x0100, 1);
         OUT_RING  (evo, 0xfffe0000);
-        BEGIN_RING(evo, 0, 0x0084, 5);
-        OUT_RING  (evo, chan ? 0x00000100 : 0x00000010);
+        if (chan) {
+                BEGIN_RING(evo, 0, 0x0084, 1);
+                OUT_RING  (evo, 0x00000100);
+        } else {
+                BEGIN_RING(evo, 0, 0x0084, 1);
+                OUT_RING  (evo, 0x00000010);
+                /* allows gamma somehow, PDISP will bitch at you if
+                 * you don't wait for vblank before changing this..
+                 */
+                BEGIN_RING(evo, 0, 0x00e0, 1);
+                OUT_RING  (evo, 0x40000000);
+        }
+        BEGIN_RING(evo, 0, 0x0088, 4);
         OUT_RING  (evo, dispc->sem.offset);
         OUT_RING  (evo, 0xf00d0000 | dispc->sem.value);
         OUT_RING  (evo, 0x74b1e000);