drm/nouveau: store supported dma mask in vmmgr

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

diff --git a/drivers/gpu/drm/nouveau/core/include/subdev/vm.h b/drivers/gpu/drm/nouveau/core/include/subdev/vm.h
index 66a4473..9d595ef 100644 (file)
--- a/drivers/gpu/drm/nouveau/core/include/subdev/vm.h
+++ b/drivers/gpu/drm/nouveau/core/include/subdev/vm.h
@@ -69,6 +69,7 @@ struct nouveau_vmmgr {
        struct nouveau_subdev base;
 
        u64 limit;
+       u8  dma_bits;
        u32 pgt_bits;
        u8  spg_shift;
        u8  lpg_shift;

diff --git a/drivers/gpu/drm/nouveau/core/subdev/vm/nv04.c b/drivers/gpu/drm/nouveau/core/subdev/vm/nv04.c
index bfe6766..ad6ad5d 100644 (file)
--- a/drivers/gpu/drm/nouveau/core/subdev/vm/nv04.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/vm/nv04.c
@@ -97,6 +97,7 @@ nv04_vmmgr_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
 
        priv->base.create = nv04_vm_create;
        priv->base.limit = NV04_PDMA_SIZE;
+       priv->base.dma_bits = 32;
        priv->base.pgt_bits = 32 - 12;
        priv->base.spg_shift = 12;
        priv->base.lpg_shift = 12;

diff --git a/drivers/gpu/drm/nouveau/core/subdev/vm/nv41.c b/drivers/gpu/drm/nouveau/core/subdev/vm/nv41.c
index bbeac8d..c5486e4 100644 (file)
--- a/drivers/gpu/drm/nouveau/core/subdev/vm/nv41.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/vm/nv41.c
@@ -98,6 +98,7 @@ nv41_vmmgr_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
 
        priv->base.create = nv04_vm_create;
        priv->base.limit = NV41_GART_SIZE;
+       priv->base.dma_bits = 39;
        priv->base.pgt_bits = 32 - 12;
        priv->base.spg_shift = 12;
        priv->base.lpg_shift = 12;

diff --git a/drivers/gpu/drm/nouveau/core/subdev/vm/nv44.c b/drivers/gpu/drm/nouveau/core/subdev/vm/nv44.c
index d099cde..8c9cece 100644 (file)
--- a/drivers/gpu/drm/nouveau/core/subdev/vm/nv44.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/vm/nv44.c
@@ -179,6 +179,7 @@ nv44_vmmgr_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
 
        priv->base.create = nv04_vm_create;
        priv->base.limit = NV44_GART_SIZE;
+       priv->base.dma_bits = 39;
        priv->base.pgt_bits = 32 - 12;
        priv->base.spg_shift = 12;
        priv->base.lpg_shift = 12;

diff --git a/drivers/gpu/drm/nouveau/core/subdev/vm/nv50.c b/drivers/gpu/drm/nouveau/core/subdev/vm/nv50.c
index d83489c..e067f81 100644 (file)
--- a/drivers/gpu/drm/nouveau/core/subdev/vm/nv50.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/vm/nv50.c
@@ -201,6 +201,7 @@ nv50_vmmgr_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
                return ret;
 
        priv->base.limit = 1ULL << 40;
+       priv->base.dma_bits = 40;
        priv->base.pgt_bits  = 29 - 12;
        priv->base.spg_shift = 12;
        priv->base.lpg_shift = 16;

diff --git a/drivers/gpu/drm/nouveau/core/subdev/vm/nvc0.c b/drivers/gpu/drm/nouveau/core/subdev/vm/nvc0.c
index 44721a4..30c61e6 100644 (file)
--- a/drivers/gpu/drm/nouveau/core/subdev/vm/nvc0.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/vm/nvc0.c
@@ -163,6 +163,7 @@ nvc0_vmmgr_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
                return ret;
 
        priv->base.limit = 1ULL << 40;
+       priv->base.dma_bits = 40;
        priv->base.pgt_bits  = 27 - 12;
        priv->base.spg_shift = 12;
        priv->base.lpg_shift = 17;

diff --git a/drivers/gpu/drm/nouveau/nouveau_ttm.c b/drivers/gpu/drm/nouveau/nouveau_ttm.c
index d2fc121..9be9cb5 100644 (file)
--- a/drivers/gpu/drm/nouveau/nouveau_ttm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_ttm.c
@@ -340,14 +340,10 @@ nouveau_ttm_init(struct nouveau_drm *drm)
        u32 bits;
        int ret;
 
-       if (nv_device(drm->device)->card_type >= NV_50) {
-               if (pci_dma_supported(dev->pdev, DMA_BIT_MASK(40)))
-                       bits = 40;
-               else
-                       bits = 32;
-       } else {
+       bits = nouveau_vmmgr(drm->device)->dma_bits;
+       if ( drm->agp.stat == ENABLED ||
+           !pci_dma_supported(dev->pdev, DMA_BIT_MASK(bits)))
                bits = 32;
-       }
 
        ret = pci_set_dma_mask(dev->pdev, DMA_BIT_MASK(bits));
        if (ret)