[Intel-gfx] [PATCH v3 3/3] drm/i915: treat stolen as a region
Matthew Auld
matthew.auld at intel.com
Fri Oct 18 10:44:50 UTC 2019
Convert stolen memory over to a region object. Still leaves open the
question with what to do with pre-allocated objects...
Signed-off-by: Matthew Auld <matthew.auld at intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
Cc: Abdiel Janulgue <abdiel.janulgue at linux.intel.com>
Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
---
drivers/gpu/drm/i915/gem/i915_gem_stolen.c | 65 +++++++++++++++++++---
drivers/gpu/drm/i915/gem/i915_gem_stolen.h | 3 +-
drivers/gpu/drm/i915/i915_gem_gtt.c | 14 +----
drivers/gpu/drm/i915/i915_pci.c | 2 +-
drivers/gpu/drm/i915/intel_memory_region.c | 1 +
drivers/gpu/drm/i915/intel_memory_region.h | 3 +
6 files changed, 65 insertions(+), 23 deletions(-)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_stolen.c b/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
index c76260ce13e3..57cd8bc2657c 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
@@ -10,6 +10,7 @@
#include <drm/drm_mm.h>
#include <drm/i915_drm.h>
+#include "gem/i915_gem_region.h"
#include "i915_drv.h"
#include "i915_gem_stolen.h"
@@ -150,7 +151,7 @@ static int i915_adjust_stolen(struct drm_i915_private *dev_priv,
return 0;
}
-void i915_gem_cleanup_stolen(struct drm_i915_private *dev_priv)
+static void i915_gem_cleanup_stolen(struct drm_i915_private *dev_priv)
{
if (!drm_mm_initialized(&dev_priv->mm.stolen))
return;
@@ -355,7 +356,7 @@ static void icl_get_stolen_reserved(struct drm_i915_private *i915,
}
}
-int i915_gem_init_stolen(struct drm_i915_private *dev_priv)
+static int i915_gem_init_stolen(struct drm_i915_private *dev_priv)
{
resource_size_t reserved_base, stolen_top;
resource_size_t reserved_total, reserved_size;
@@ -539,6 +540,9 @@ i915_gem_object_release_stolen(struct drm_i915_gem_object *obj)
i915_gem_stolen_remove_node(dev_priv, stolen);
kfree(stolen);
+
+ if (obj->mm.region)
+ i915_gem_object_release_memory_region(obj);
}
static const struct drm_i915_gem_object_ops i915_gem_object_stolen_ops = {
@@ -548,8 +552,9 @@ static const struct drm_i915_gem_object_ops i915_gem_object_stolen_ops = {
};
static struct drm_i915_gem_object *
-_i915_gem_object_create_stolen(struct drm_i915_private *dev_priv,
- struct drm_mm_node *stolen)
+__i915_gem_object_create_stolen(struct drm_i915_private *dev_priv,
+ struct drm_mm_node *stolen,
+ struct intel_memory_region *mem)
{
struct drm_i915_gem_object *obj;
unsigned int cache_level;
@@ -571,6 +576,9 @@ _i915_gem_object_create_stolen(struct drm_i915_private *dev_priv,
if (err)
goto cleanup;
+ if (mem)
+ i915_gem_object_init_memory_region(obj, mem, 0);
+
return obj;
cleanup:
@@ -579,10 +587,12 @@ _i915_gem_object_create_stolen(struct drm_i915_private *dev_priv,
return ERR_PTR(err);
}
-struct drm_i915_gem_object *
-i915_gem_object_create_stolen(struct drm_i915_private *dev_priv,
- resource_size_t size)
+static struct drm_i915_gem_object *
+_i915_gem_object_create_stolen(struct intel_memory_region *mem,
+ resource_size_t size,
+ unsigned int flags)
{
+ struct drm_i915_private *dev_priv = mem->i915;
struct drm_i915_gem_object *obj;
struct drm_mm_node *stolen;
int ret;
@@ -603,7 +613,7 @@ i915_gem_object_create_stolen(struct drm_i915_private *dev_priv,
goto err_free;
}
- obj = _i915_gem_object_create_stolen(dev_priv, stolen);
+ obj = __i915_gem_object_create_stolen(dev_priv, stolen, mem);
if (IS_ERR(obj))
goto err_remove;
@@ -616,6 +626,43 @@ i915_gem_object_create_stolen(struct drm_i915_private *dev_priv,
return obj;
}
+struct drm_i915_gem_object *
+i915_gem_object_create_stolen(struct drm_i915_private *dev_priv,
+ resource_size_t size)
+{
+ return i915_gem_object_create_region(dev_priv->mm.regions[INTEL_REGION_STOLEN],
+ size, I915_BO_ALLOC_CONTIGUOUS);
+}
+
+static int init_stolen(struct intel_memory_region *mem)
+{
+ /*
+ * Initialise stolen early so that we may reserve preallocated
+ * objects for the BIOS to KMS transition.
+ */
+ return i915_gem_init_stolen(mem->i915);
+}
+
+static void release_stolen(struct intel_memory_region *mem)
+{
+ i915_gem_cleanup_stolen(mem->i915);
+}
+
+static const struct intel_memory_region_ops i915_region_stolen_ops = {
+ .init = init_stolen,
+ .release = release_stolen,
+ .create_object = _i915_gem_object_create_stolen,
+};
+
+struct intel_memory_region *i915_gem_stolen_setup(struct drm_i915_private *i915)
+{
+ return intel_memory_region_create(i915,
+ intel_graphics_stolen_res.start,
+ resource_size(&intel_graphics_stolen_res),
+ PAGE_SIZE, 0,
+ &i915_region_stolen_ops);
+}
+
struct drm_i915_gem_object *
i915_gem_object_create_stolen_for_preallocated(struct drm_i915_private *dev_priv,
resource_size_t stolen_offset,
@@ -655,7 +702,7 @@ i915_gem_object_create_stolen_for_preallocated(struct drm_i915_private *dev_priv
return ERR_PTR(ret);
}
- obj = _i915_gem_object_create_stolen(dev_priv, stolen);
+ obj = __i915_gem_object_create_stolen(dev_priv, stolen, NULL);
if (IS_ERR(obj)) {
DRM_DEBUG_DRIVER("failed to allocate stolen object\n");
i915_gem_stolen_remove_node(dev_priv, stolen);
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_stolen.h b/drivers/gpu/drm/i915/gem/i915_gem_stolen.h
index 2289644d8604..c1040627fbf3 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_stolen.h
+++ b/drivers/gpu/drm/i915/gem/i915_gem_stolen.h
@@ -21,8 +21,7 @@ int i915_gem_stolen_insert_node_in_range(struct drm_i915_private *dev_priv,
u64 end);
void i915_gem_stolen_remove_node(struct drm_i915_private *dev_priv,
struct drm_mm_node *node);
-int i915_gem_init_stolen(struct drm_i915_private *dev_priv);
-void i915_gem_cleanup_stolen(struct drm_i915_private *dev_priv);
+struct intel_memory_region *i915_gem_stolen_setup(struct drm_i915_private *i915);
struct drm_i915_gem_object *
i915_gem_object_create_stolen(struct drm_i915_private *dev_priv,
resource_size_t size);
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 263f1cea0b64..0df057838a24 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -2748,8 +2748,6 @@ void i915_gem_cleanup_memory_regions(struct drm_i915_private *i915)
{
int i;
- i915_gem_cleanup_stolen(i915);
-
for (i = 0; i < INTEL_REGION_UNKNOWN; i++) {
struct intel_memory_region *region = i915->mm.regions[i];
@@ -2762,15 +2760,6 @@ int i915_gem_init_memory_regions(struct drm_i915_private *i915)
{
int err, i;
- /*
- * Initialise stolen early so that we may reserve preallocated
- * objects for the BIOS to KMS transition.
- */
- /* XXX: stolen will become a region at some point */
- err = i915_gem_init_stolen(i915);
- if (err)
- return err;
-
for (i = 0; i < INTEL_REGION_UNKNOWN; i++) {
struct intel_memory_region *mem = ERR_PTR(-ENODEV);
u32 type;
@@ -2783,6 +2772,9 @@ int i915_gem_init_memory_regions(struct drm_i915_private *i915)
case INTEL_MEMORY_SYSTEM:
mem = i915_gem_shmem_setup(i915);
break;
+ case INTEL_MEMORY_STOLEN:
+ mem = i915_gem_stolen_setup(i915);
+ break;
}
if (IS_ERR(mem)) {
diff --git a/drivers/gpu/drm/i915/i915_pci.c b/drivers/gpu/drm/i915/i915_pci.c
index e55ab2724996..f9a3bfe68689 100644
--- a/drivers/gpu/drm/i915/i915_pci.c
+++ b/drivers/gpu/drm/i915/i915_pci.c
@@ -152,7 +152,7 @@
.page_sizes = I915_GTT_PAGE_SIZE_4K
#define GEN_DEFAULT_REGIONS \
- .memory_regions = REGION_SMEM
+ .memory_regions = REGION_SMEM | REGION_STOLEN
#define I830_FEATURES \
GEN(2), \
diff --git a/drivers/gpu/drm/i915/intel_memory_region.c b/drivers/gpu/drm/i915/intel_memory_region.c
index 132da872b232..3bed39c5feef 100644
--- a/drivers/gpu/drm/i915/intel_memory_region.c
+++ b/drivers/gpu/drm/i915/intel_memory_region.c
@@ -12,6 +12,7 @@
const u32 intel_region_map[] = {
[INTEL_REGION_SMEM] = REGION_MAP(INTEL_MEMORY_SYSTEM, 0),
+ [INTEL_REGION_STOLEN] = REGION_MAP(INTEL_MEMORY_STOLEN, 0),
};
static u64
diff --git a/drivers/gpu/drm/i915/intel_memory_region.h b/drivers/gpu/drm/i915/intel_memory_region.h
index 9c56c05328d7..b6a29fbb74e4 100644
--- a/drivers/gpu/drm/i915/intel_memory_region.h
+++ b/drivers/gpu/drm/i915/intel_memory_region.h
@@ -23,15 +23,18 @@ struct sg_table;
*/
enum intel_memory_type {
INTEL_MEMORY_SYSTEM = 0,
+ INTEL_MEMORY_STOLEN,
INTEL_MEMORY_UNKNOWN,
};
enum intel_region_id {
INTEL_REGION_SMEM = 0,
+ INTEL_REGION_STOLEN,
INTEL_REGION_UNKNOWN, /* Should be last */
};
#define REGION_SMEM BIT(INTEL_REGION_SMEM)
+#define REGION_STOLEN BIT(INTEL_REGION_STOLEN)
#define INTEL_MEMORY_TYPE_SHIFT 16
--
2.20.1
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