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authorLucas Stach <l.stach@pengutronix.de>2019-08-02 14:19:38 +0200
committerLucas Stach <l.stach@pengutronix.de>2019-08-15 11:58:59 +0200
commit17eae23b08207a8954f77ca74caeaeb72a04da67 (patch)
tree42969300b67d7c90bf9a0d68a5246c8a4383cd97 /drivers/gpu/drm/etnaviv
parentedb5ff07ef67962b81ea7abb716a74ef0a491ca1 (diff)
drm/etnaviv: allow to request specific virtual address for gem mapping
Allow the mapping code to request a specific virtual address for the gem mapping. If the virtual address is zero we fall back to the old mode of allocating a virtual address for the mapping. Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de> Reviewed-by: Guido Günther <agx@sigxcpu.org>
Diffstat (limited to 'drivers/gpu/drm/etnaviv')
-rw-r--r--drivers/gpu/drm/etnaviv/etnaviv_gem.c3
-rw-r--r--drivers/gpu/drm/etnaviv/etnaviv_gem.h3
-rw-r--r--drivers/gpu/drm/etnaviv/etnaviv_mmu.c16
-rw-r--r--drivers/gpu/drm/etnaviv/etnaviv_mmu.h2
4 files changed, 19 insertions, 5 deletions
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem.c b/drivers/gpu/drm/etnaviv/etnaviv_gem.c
index b9354f2297d4..8c62c5e0a494 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gem.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem.c
@@ -308,7 +308,8 @@ struct etnaviv_vram_mapping *etnaviv_gem_mapping_get(
mapping->use = 1;
ret = etnaviv_iommu_map_gem(mmu_context, etnaviv_obj,
- mmu_context->global->memory_base, mapping);
+ mmu_context->global->memory_base,
+ mapping, 0);
if (ret < 0) {
etnaviv_iommu_context_put(mmu_context);
kfree(mapping);
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem.h b/drivers/gpu/drm/etnaviv/etnaviv_gem.h
index 1e11659a8842..2d01ee1f65c1 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gem.h
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem.h
@@ -120,7 +120,8 @@ struct page **etnaviv_gem_get_pages(struct etnaviv_gem_object *obj);
void etnaviv_gem_put_pages(struct etnaviv_gem_object *obj);
struct etnaviv_vram_mapping *etnaviv_gem_mapping_get(
- struct drm_gem_object *obj, struct etnaviv_iommu_context *mmu_context);
+ struct drm_gem_object *obj, struct etnaviv_iommu_context *mmu_context,
+ u64 va);
void etnaviv_gem_mapping_unreference(struct etnaviv_vram_mapping *mapping);
#endif /* __ETNAVIV_GEM_H__ */
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_mmu.c b/drivers/gpu/drm/etnaviv/etnaviv_mmu.c
index 82822e30bf30..35ebae6a1be7 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_mmu.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_mmu.c
@@ -220,9 +220,16 @@ static int etnaviv_iommu_find_iova(struct etnaviv_iommu_context *context,
return ret;
}
+static int etnaviv_iommu_insert_exact(struct etnaviv_iommu_context *context,
+ struct drm_mm_node *node, size_t size, u64 va)
+{
+ return drm_mm_insert_node_in_range(&context->mm, node, size, 0, 0, va,
+ va + size, DRM_MM_INSERT_LOWEST);
+}
+
int etnaviv_iommu_map_gem(struct etnaviv_iommu_context *context,
struct etnaviv_gem_object *etnaviv_obj, u32 memory_base,
- struct etnaviv_vram_mapping *mapping)
+ struct etnaviv_vram_mapping *mapping, u64 va)
{
struct sg_table *sgt = etnaviv_obj->sgt;
struct drm_mm_node *node;
@@ -248,7 +255,12 @@ int etnaviv_iommu_map_gem(struct etnaviv_iommu_context *context,
node = &mapping->vram_node;
- ret = etnaviv_iommu_find_iova(context, node, etnaviv_obj->base.size);
+ if (va)
+ ret = etnaviv_iommu_insert_exact(context, node,
+ etnaviv_obj->base.size, va);
+ else
+ ret = etnaviv_iommu_find_iova(context, node,
+ etnaviv_obj->base.size);
if (ret < 0)
goto unlock;
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_mmu.h b/drivers/gpu/drm/etnaviv/etnaviv_mmu.h
index c01491a6c4d8..d1d6902fd13b 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_mmu.h
+++ b/drivers/gpu/drm/etnaviv/etnaviv_mmu.h
@@ -88,7 +88,7 @@ struct etnaviv_gem_object;
int etnaviv_iommu_map_gem(struct etnaviv_iommu_context *context,
struct etnaviv_gem_object *etnaviv_obj, u32 memory_base,
- struct etnaviv_vram_mapping *mapping);
+ struct etnaviv_vram_mapping *mapping, u64 va);
void etnaviv_iommu_unmap_gem(struct etnaviv_iommu_context *context,
struct etnaviv_vram_mapping *mapping);