drivers/gpu/drm/i915/i915_gem.h

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/i915/i915_gem.h

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/i915/i915_gem.h
Extension
.h
Size
4606 bytes
Lines
140
Domain
Driver Families
Bucket
drivers/gpu
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef __I915_GEM_H__
#define __I915_GEM_H__

#include <linux/bug.h>
#include <linux/types.h>

#include <drm/drm_drv.h>

#include "i915_utils.h"

struct drm_file;
struct drm_i915_gem_object;
struct drm_i915_private;
struct i915_gem_ww_ctx;
struct i915_gtt_view;
struct i915_vma;

#define I915_GEM_GPU_DOMAINS	       \
	(I915_GEM_DOMAIN_RENDER |      \
	 I915_GEM_DOMAIN_SAMPLER |     \
	 I915_GEM_DOMAIN_COMMAND |     \
	 I915_GEM_DOMAIN_INSTRUCTION | \
	 I915_GEM_DOMAIN_VERTEX)

void i915_gem_init_early(struct drm_i915_private *i915);
void i915_gem_cleanup_early(struct drm_i915_private *i915);

void i915_gem_drain_freed_objects(struct drm_i915_private *i915);
void i915_gem_drain_workqueue(struct drm_i915_private *i915);

struct i915_vma * __must_check
i915_gem_object_ggtt_pin_ww(struct drm_i915_gem_object *obj,
			    struct i915_gem_ww_ctx *ww,
			    const struct i915_gtt_view *view,
			    u64 size, u64 alignment, u64 flags);

struct i915_vma * __must_check
i915_gem_object_ggtt_pin(struct drm_i915_gem_object *obj,
			 const struct i915_gtt_view *view,
			 u64 size, u64 alignment, u64 flags);

int i915_gem_object_unbind(struct drm_i915_gem_object *obj,
			   unsigned long flags);
#define I915_GEM_OBJECT_UNBIND_ACTIVE BIT(0)
#define I915_GEM_OBJECT_UNBIND_BARRIER BIT(1)
#define I915_GEM_OBJECT_UNBIND_TEST BIT(2)
#define I915_GEM_OBJECT_UNBIND_VM_TRYLOCK BIT(3)
#define I915_GEM_OBJECT_UNBIND_ASYNC BIT(4)

void i915_gem_runtime_suspend(struct drm_i915_private *i915);

int __must_check i915_gem_init(struct drm_i915_private *i915);
void i915_gem_driver_register(struct drm_i915_private *i915);
void i915_gem_driver_unregister(struct drm_i915_private *i915);
void i915_gem_driver_remove(struct drm_i915_private *i915);
void i915_gem_driver_release(struct drm_i915_private *i915);

int i915_gem_open(struct drm_i915_private *i915, struct drm_file *file);

/* FIXME: All of the below belong somewhere else. */

#ifdef CONFIG_DRM_I915_DEBUG_GEM

#define GEM_SHOW_DEBUG() drm_debug_enabled(DRM_UT_DRIVER)

#ifdef CONFIG_DRM_I915_DEBUG_GEM_ONCE
#define __GEM_BUG(cond) BUG()
#else
#define __GEM_BUG(cond) \
	WARN(1, "%s:%d GEM_BUG_ON(%s)\n", __func__, __LINE__, __stringify(cond))
#endif

#define GEM_BUG_ON(condition) do { if (unlikely((condition))) {	\
		GEM_TRACE_ERR("%s:%d GEM_BUG_ON(%s)\n", \
			      __func__, __LINE__, __stringify(condition)); \
		GEM_TRACE_DUMP(); \
		__GEM_BUG(condition); \
		} \
	} while(0)
#define GEM_WARN_ON(expr) WARN_ON(expr)

#define GEM_DEBUG_WARN_ON(expr) GEM_WARN_ON(expr)

#else

#define GEM_SHOW_DEBUG() (0)

#define GEM_BUG_ON(expr) BUILD_BUG_ON_INVALID(expr)
#define GEM_WARN_ON(expr) ({ unlikely(!!(expr)); })

Annotation

Implementation Notes