diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index 9bf1c0b2037055f33dc4e3264150a5749c19702a..2f64db45f8e03d6cfd81f88385b872c5350bf496 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -120,6 +120,7 @@ gem-y += \
gem/i915_gem_internal.o \
gem/i915_gem_object.o \
gem/i915_gem_object_blt.o \
+ gem/i915_gem_lmem.o \
gem/i915_gem_mman.o \
gem/i915_gem_pages.o \
gem/i915_gem_phys.o \
@@ -148,6 +149,7 @@ i915-y += \
i915_scheduler.o \
i915_trace_points.o \
i915_vma.o \
+ intel_region_lmem.o \
intel_wopcm.o
# general-purpose microcontroller (GuC) support
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_lmem.c b/drivers/gpu/drm/i915/gem/i915_gem_lmem.c
new file mode 100644
index 0000000000000000000000000000000000000000..6a38d8028110a0c6fc6d48ecd5a1badb96f907e9
--- /dev/null
+++ b/drivers/gpu/drm/i915/gem/i915_gem_lmem.c
@@ -0,0 +1,57 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#include "intel_memory_region.h"
+#include "gem/i915_gem_region.h"
+#include "gem/i915_gem_lmem.h"
+#include "i915_drv.h"
+
+const struct drm_i915_gem_object_ops i915_gem_lmem_obj_ops = {
+ .get_pages = i915_gem_object_get_pages_buddy,
+ .put_pages = i915_gem_object_put_pages_buddy,
+ .release = i915_gem_object_release_memory_region,
+};
+
+bool i915_gem_object_is_lmem(struct drm_i915_gem_object *obj)
+{
+ return obj->ops == &i915_gem_lmem_obj_ops;
+}
+
+struct drm_i915_gem_object *
+i915_gem_object_create_lmem(struct drm_i915_private *i915,
+ resource_size_t size,
+ unsigned int flags)
+{
+ return i915_gem_object_create_region(i915->mm.regions[INTEL_REGION_LMEM],
+ size, flags);
+}
+
+struct drm_i915_gem_object *
+__i915_gem_lmem_object_create(struct intel_memory_region *mem,
+ resource_size_t size,
+ unsigned int flags)
+{
+ static struct lock_class_key lock_class;
+ struct drm_i915_private *i915 = mem->i915;
+ struct drm_i915_gem_object *obj;
+
+ if (size > BIT(mem->mm.max_order) * mem->mm.chunk_size)
+ return ERR_PTR(-E2BIG);
+
+ obj = i915_gem_object_alloc();
+ if (!obj)
+ return ERR_PTR(-ENOMEM);
+
+ drm_gem_private_object_init(&i915->drm, &obj->base, size);
+ i915_gem_object_init(obj, &i915_gem_lmem_obj_ops, &lock_class);
+
+ obj->read_domains = I915_GEM_DOMAIN_WC | I915_GEM_DOMAIN_GTT;
+
+ i915_gem_object_set_cache_coherency(obj, I915_CACHE_NONE);
+
+ i915_gem_object_init_memory_region(obj, mem, flags);
+
+ return obj;
+}
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_lmem.h b/drivers/gpu/drm/i915/gem/i915_gem_lmem.h
new file mode 100644
index 0000000000000000000000000000000000000000..fc3f15580fe3850d7f6153e9d8cb8912a8c793d5
--- /dev/null
+++ b/drivers/gpu/drm/i915/gem/i915_gem_lmem.h
@@ -0,0 +1,29 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __I915_GEM_LMEM_H
+#define __I915_GEM_LMEM_H
+
+#include <linux/types.h>
+
+struct drm_i915_private;
+struct drm_i915_gem_object;
+struct intel_memory_region;
+
+extern const struct drm_i915_gem_object_ops i915_gem_lmem_obj_ops;
+
+bool i915_gem_object_is_lmem(struct drm_i915_gem_object *obj);
+
+struct drm_i915_gem_object *
+i915_gem_object_create_lmem(struct drm_i915_private *i915,
+ resource_size_t size,
+ unsigned int flags);
+
+struct drm_i915_gem_object *
+__i915_gem_lmem_object_create(struct intel_memory_region *mem,
+ resource_size_t size,
+ unsigned int flags);
+
+#endif /* !__I915_GEM_LMEM_H */
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 84dc3703c116432821154abf93f9a6b2e1fef365..c3b2f29942f9d43004aa8a3ae04909109f491b4d 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -101,6 +101,8 @@
#include "i915_vma.h"
#include "i915_irq.h"
+#include "intel_region_lmem.h"
+
#include "intel_gvt.h"
/* General customization:
@@ -1789,6 +1791,7 @@ IS_SUBPLATFORM(const struct drm_i915_private *i915,
#define HAS_IPC(dev_priv) (INTEL_INFO(dev_priv)->display.has_ipc)
#define HAS_REGION(i915, i) (INTEL_INFO(i915)->memory_regions & (i))
+#define HAS_LMEM(i915) HAS_REGION(i915, REGION_LMEM)
#define HAS_GT_UC(dev_priv) (INTEL_INFO(dev_priv)->has_gt_uc)
diff --git a/drivers/gpu/drm/i915/intel_region_lmem.c b/drivers/gpu/drm/i915/intel_region_lmem.c
new file mode 100644
index 0000000000000000000000000000000000000000..199532056e1bafbe551ae289a204a68c6fa050f7
--- /dev/null
+++ b/drivers/gpu/drm/i915/intel_region_lmem.c
@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#include "i915_drv.h"
+#include "intel_memory_region.h"
+#include "gem/i915_gem_lmem.h"
+#include "gem/i915_gem_region.h"
+#include "intel_region_lmem.h"
+
+const struct intel_memory_region_ops intel_region_lmem_ops = {
+ .init = intel_memory_region_init_buddy,
+ .release = intel_memory_region_release_buddy,
+ .create_object = __i915_gem_lmem_object_create,
+};
diff --git a/drivers/gpu/drm/i915/intel_region_lmem.h b/drivers/gpu/drm/i915/intel_region_lmem.h
new file mode 100644
index 0000000000000000000000000000000000000000..ed2a3bab644381312a157711fa1a6e16ca03c5a4
--- /dev/null
+++ b/drivers/gpu/drm/i915/intel_region_lmem.h
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __INTEL_REGION_LMEM_H
+#define __INTEL_REGION_LMEM_H
+
+extern const struct intel_memory_region_ops intel_region_lmem_ops;
+
+#endif /* !__INTEL_REGION_LMEM_H */
diff --git a/drivers/gpu/drm/i915/selftests/i915_live_selftests.h b/drivers/gpu/drm/i915/selftests/i915_live_selftests.h
index 00a063730bc34f8fcd2696579f1e6bca614ba6e7..4b3cac73e291469a1e8e2c704f7211a3342f6111 100644
--- a/drivers/gpu/drm/i915/selftests/i915_live_selftests.h
+++ b/drivers/gpu/drm/i915/selftests/i915_live_selftests.h
@@ -33,6 +33,7 @@ selftest(gem_contexts, i915_gem_context_live_selftests)
selftest(blt, i915_gem_object_blt_live_selftests)
selftest(client, i915_gem_client_blt_live_selftests)
selftest(reset, intel_reset_live_selftests)
+selftest(memory_region, intel_memory_region_live_selftests)
selftest(hangcheck, intel_hangcheck_live_selftests)
selftest(execlists, intel_execlists_live_selftests)
selftest(guc, intel_guc_live_selftest)
diff --git a/drivers/gpu/drm/i915/selftests/intel_memory_region.c b/drivers/gpu/drm/i915/selftests/intel_memory_region.c
index 56091e7e599e6ee47ab1c6cf3edb593568c0301a..617a35cfac2f273a3ccf12fe3d8da6dc2d32eca4 100644
--- a/drivers/gpu/drm/i915/selftests/intel_memory_region.c
+++ b/drivers/gpu/drm/i915/selftests/intel_memory_region.c
@@ -11,8 +11,10 @@
#include "mock_gem_device.h"
#include "mock_region.h"
+#include "gem/i915_gem_lmem.h"
#include "gem/i915_gem_region.h"
#include "gem/selftests/mock_context.h"
+#include "gt/intel_gt.h"
#include "selftests/i915_random.h"
static void close_objects(struct intel_memory_region *mem,
@@ -252,6 +254,27 @@ static int igt_mock_contiguous(void *arg)
return err;
}
+static int igt_lmem_create(void *arg)
+{
+ struct drm_i915_private *i915 = arg;
+ struct drm_i915_gem_object *obj;
+ int err = 0;
+
+ obj = i915_gem_object_create_lmem(i915, PAGE_SIZE, 0);
+ if (IS_ERR(obj))
+ return PTR_ERR(obj);
+
+ err = i915_gem_object_pin_pages(obj);
+ if (err)
+ goto out_put;
+
+ i915_gem_object_unpin_pages(obj);
+out_put:
+ i915_gem_object_put(obj);
+
+ return err;
+}
+
int intel_memory_region_mock_selftests(void)
{
static const struct i915_subtest tests[] = {
@@ -280,3 +303,20 @@ int intel_memory_region_mock_selftests(void)
drm_dev_put(&i915->drm);
return err;
}
+
+int intel_memory_region_live_selftests(struct drm_i915_private *i915)
+{
+ static const struct i915_subtest tests[] = {
+ SUBTEST(igt_lmem_create),
+ };
+
+ if (!HAS_LMEM(i915)) {
+ pr_info("device lacks LMEM support, skipping\n");
+ return 0;
+ }
+
+ if (intel_gt_is_wedged(&i915->gt))
+ return 0;
+
+ return i915_live_subtests(tests, i915);
+}