drivers/gpu/drm/qxl/qxl_object.h

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/qxl/qxl_object.h

Extension

.h

Size

2740 bytes

Lines

78

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.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• qxl_drv.h

Detected Declarations

• function files
• function qxl_bo_unreserve
• function qxl_bo_size

Annotated Snippet

if (r != -ERESTARTSYS) {
			struct drm_device *ddev = bo->tbo.base.dev;

			dev_err(ddev->dev, "%p reserve failed\n", bo);
		}
		return r;
	}
	return 0;
}

static inline void qxl_bo_unreserve(struct qxl_bo *bo)
{
	ttm_bo_unreserve(&bo->tbo);
}

static inline unsigned long qxl_bo_size(struct qxl_bo *bo)
{
	return bo->tbo.base.size;
}

extern int qxl_bo_create(struct qxl_device *qdev,
			 unsigned long size,
			 bool kernel, bool pinned, u32 domain,
			 u32 priority,
			 struct qxl_surface *surf,
			 struct qxl_bo **bo_ptr);
int qxl_bo_pin_and_vmap(struct qxl_bo *bo, struct iosys_map *map);
int qxl_bo_vmap_locked(struct qxl_bo *bo, struct iosys_map *map);
int qxl_bo_vunmap_and_unpin(struct qxl_bo *bo);
void qxl_bo_vunmap_locked(struct qxl_bo *bo);
void *qxl_bo_kmap_atomic_page(struct qxl_device *qdev, struct qxl_bo *bo, int page_offset);
void qxl_bo_kunmap_atomic_page(struct qxl_device *qdev, struct qxl_bo *bo, void *map);
extern struct qxl_bo *qxl_bo_ref(struct qxl_bo *bo);
extern void qxl_bo_unref(struct qxl_bo **bo);
extern int qxl_bo_pin_locked(struct qxl_bo *bo);
extern void qxl_bo_unpin_locked(struct qxl_bo *bo);
extern int qxl_bo_pin(struct qxl_bo *bo);
extern int qxl_bo_unpin(struct qxl_bo *bo);
extern void qxl_ttm_placement_from_domain(struct qxl_bo *qbo, u32 domain);
extern bool qxl_ttm_bo_is_qxl_bo(struct ttm_buffer_object *bo);

#endif

Annotation

• Immediate include surface: `qxl_drv.h`.
• Detected declarations: `function files`, `function qxl_bo_unreserve`, `function qxl_bo_size`.
• Atlas domain: Driver Families / drivers/gpu.
• Implementation status: source implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

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.