drm/i915/gem: split gem_create into own file

In preparation for gem_create_ext break out the gem_create uAPI, so that
we don't clutter i915_gem.c once we start adding various extensions

Signed-off-by: Matthew Auld <[e-mail]>
Reviewed-by: Chris Wilson <[e-mail]>
Signed-off-by: Chris Wilson <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]

drivers/gpu/drm/i915/Makefile

···
 	gem/i915_gem_clflush.o \
 	gem/i915_gem_client_blt.o \
 	gem/i915_gem_context.o \
+	gem/i915_gem_create.o \
 	gem/i915_gem_dmabuf.o \
 	gem/i915_gem_domain.o \
 	gem/i915_gem_execbuffer.o \

drivers/gpu/drm/i915/gem/i915_gem_create.c

···
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+
+#include "gem/i915_gem_ioctls.h"
+#include "gem/i915_gem_region.h"
+
+#include "i915_drv.h"
+
+static int
+i915_gem_create(struct drm_file *file,
+		struct intel_memory_region *mr,
+		u64 *size_p,
+		u32 *handle_p)
+{
+	struct drm_i915_gem_object *obj;
+	u32 handle;
+	u64 size;
+	int ret;
+
+	GEM_BUG_ON(!is_power_of_2(mr->min_page_size));
+	size = round_up(*size_p, mr->min_page_size);
+	if (size == 0)
+		return -EINVAL;
+
+	/* For most of the ABI (e.g. mmap) we think in system pages */
+	GEM_BUG_ON(!IS_ALIGNED(size, PAGE_SIZE));
+
+	/* Allocate the new object */
+	obj = i915_gem_object_create_region(mr, size, 0);
+	if (IS_ERR(obj))
+		return PTR_ERR(obj);
+
+	ret = drm_gem_handle_create(file, &obj->base, &handle);
+	/* drop reference from allocate - handle holds it now */
+	i915_gem_object_put(obj);
+	if (ret)
+		return ret;
+
+	*handle_p = handle;
+	*size_p = size;
+	return 0;
+}
+
+int
+i915_gem_dumb_create(struct drm_file *file,
+		     struct drm_device *dev,
+		     struct drm_mode_create_dumb *args)
+{
+	enum intel_memory_type mem_type;
+	int cpp = DIV_ROUND_UP(args->bpp, 8);
+	u32 format;
+
+	switch (cpp) {
+	case 1:
+		format = DRM_FORMAT_C8;
+		break;
+	case 2:
+		format = DRM_FORMAT_RGB565;
+		break;
+	case 4:
+		format = DRM_FORMAT_XRGB8888;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	/* have to work out size/pitch and return them */
+	args->pitch = ALIGN(args->width * cpp, 64);
+
+	/* align stride to page size so that we can remap */
+	if (args->pitch > intel_plane_fb_max_stride(to_i915(dev), format,
+						    DRM_FORMAT_MOD_LINEAR))
+		args->pitch = ALIGN(args->pitch, 4096);
+
+	if (args->pitch < args->width)
+		return -EINVAL;
+
+	args->size = mul_u32_u32(args->pitch, args->height);
+
+	mem_type = INTEL_MEMORY_SYSTEM;
+	if (HAS_LMEM(to_i915(dev)))
+		mem_type = INTEL_MEMORY_LOCAL;
+
+	return i915_gem_create(file,
+			       intel_memory_region_by_type(to_i915(dev),
+							   mem_type),
+			       &args->size, &args->handle);
+}
+
+/**
+ * Creates a new mm object and returns a handle to it.
+ * @dev: drm device pointer
+ * @data: ioctl data blob
+ * @file: drm file pointer
+ */
+int
+i915_gem_create_ioctl(struct drm_device *dev, void *data,
+		      struct drm_file *file)
+{
+	struct drm_i915_private *i915 = to_i915(dev);
+	struct drm_i915_gem_create *args = data;
+
+	i915_gem_flush_free_objects(i915);
+
+	return i915_gem_create(file,
+			       intel_memory_region_by_type(i915,
+							   INTEL_MEMORY_SYSTEM),
+			       &args->size, &args->handle);
+}

drivers/gpu/drm/i915/i915_gem.c

···
 }
 
 static int
-i915_gem_create(struct drm_file *file,
-		struct intel_memory_region *mr,
-		u64 *size_p,
-		u32 *handle_p)
-{
-	struct drm_i915_gem_object *obj;
-	u32 handle;
-	u64 size;
-	int ret;
-
-	GEM_BUG_ON(!is_power_of_2(mr->min_page_size));
-	size = round_up(*size_p, mr->min_page_size);
-	if (size == 0)
-		return -EINVAL;
-
-	/* For most of the ABI (e.g. mmap) we think in system pages */
-	GEM_BUG_ON(!IS_ALIGNED(size, PAGE_SIZE));
-
-	/* Allocate the new object */
-	obj = i915_gem_object_create_region(mr, size, 0);
-	if (IS_ERR(obj))
-		return PTR_ERR(obj);
-
-	ret = drm_gem_handle_create(file, &obj->base, &handle);
-	/* drop reference from allocate - handle holds it now */
-	i915_gem_object_put(obj);
-	if (ret)
-		return ret;
-
-	*handle_p = handle;
-	*size_p = size;
-	return 0;
-}
-
-int
-i915_gem_dumb_create(struct drm_file *file,
-		     struct drm_device *dev,
-		     struct drm_mode_create_dumb *args)
-{
-	enum intel_memory_type mem_type;
-	int cpp = DIV_ROUND_UP(args->bpp, 8);
-	u32 format;
-
-	switch (cpp) {
-	case 1:
-		format = DRM_FORMAT_C8;
-		break;
-	case 2:
-		format = DRM_FORMAT_RGB565;
-		break;
-	case 4:
-		format = DRM_FORMAT_XRGB8888;
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	/* have to work out size/pitch and return them */
-	args->pitch = ALIGN(args->width * cpp, 64);
-
-	/* align stride to page size so that we can remap */
-	if (args->pitch > intel_plane_fb_max_stride(to_i915(dev), format,
-						    DRM_FORMAT_MOD_LINEAR))
-		args->pitch = ALIGN(args->pitch, 4096);
-
-	if (args->pitch < args->width)
-		return -EINVAL;
-
-	args->size = mul_u32_u32(args->pitch, args->height);
-
-	mem_type = INTEL_MEMORY_SYSTEM;
-	if (HAS_LMEM(to_i915(dev)))
-		mem_type = INTEL_MEMORY_LOCAL;
-
-	return i915_gem_create(file,
-			       intel_memory_region_by_type(to_i915(dev),
-							   mem_type),
-			       &args->size, &args->handle);
-}
-
-/**
- * Creates a new mm object and returns a handle to it.
- * @dev: drm device pointer
- * @data: ioctl data blob
- * @file: drm file pointer
- */
-int
-i915_gem_create_ioctl(struct drm_device *dev, void *data,
-		      struct drm_file *file)
-{
-	struct drm_i915_private *i915 = to_i915(dev);
-	struct drm_i915_gem_create *args = data;
-
-	i915_gem_flush_free_objects(i915);
-
-	return i915_gem_create(file,
-			       intel_memory_region_by_type(i915,
-							   INTEL_MEMORY_SYSTEM),
-			       &args->size, &args->handle);
-}
-
-static int
 shmem_pread(struct page *page, int offset, int len, char __user *user_data,
 	    bool needs_clflush)
 {