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.
- 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.
- Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.
Dependency Surface
linux/bug.hlinux/types.hdrm/drm_drv.hi915_utils.h
Detected Declarations
struct drm_filestruct drm_i915_gem_objectstruct drm_i915_privatestruct i915_gem_ww_ctxstruct i915_gtt_viewstruct i915_vma
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
- Immediate include surface: `linux/bug.h`, `linux/types.h`, `drm/drm_drv.h`, `i915_utils.h`.
- Detected declarations: `struct drm_file`, `struct drm_i915_gem_object`, `struct drm_i915_private`, `struct i915_gem_ww_ctx`, `struct i915_gtt_view`, `struct i915_vma`.
- Atlas domain: Driver Families / drivers/gpu.
- Implementation status: source implementation candidate.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.