drivers/gpu/drm/i915/i915_mm.h
Source file repositories/reference/linux-study-clean/drivers/gpu/drm/i915/i915_mm.h
File Facts
- System
- Linux kernel
- Corpus path
drivers/gpu/drm/i915/i915_mm.h- Extension
.h- Size
- 856 bytes
- Lines
- 37
- 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.h
Detected Declarations
struct vm_area_structstruct io_mappingstruct scatterlistfunction remap_io_mapping
Annotated Snippet
#ifndef __I915_MM_H__
#define __I915_MM_H__
#include <linux/bug.h>
#include <linux/types.h>
struct vm_area_struct;
struct io_mapping;
struct scatterlist;
#if IS_ENABLED(CONFIG_X86)
int remap_io_mapping(struct vm_area_struct *vma,
unsigned long addr, unsigned long pfn, unsigned long size,
struct io_mapping *iomap);
#else
static inline
int remap_io_mapping(struct vm_area_struct *vma,
unsigned long addr, unsigned long pfn, unsigned long size,
struct io_mapping *iomap)
{
WARN_ONCE(1, "Architecture has no drm_cache.c support\n");
return 0;
}
#endif
int remap_io_sg(struct vm_area_struct *vma,
unsigned long addr, unsigned long size,
struct scatterlist *sgl, unsigned long offset,
resource_size_t iobase);
#endif /* __I915_MM_H__ */
Annotation
- Immediate include surface: `linux/bug.h`, `linux/types.h`.
- Detected declarations: `struct vm_area_struct`, `struct io_mapping`, `struct scatterlist`, `function remap_io_mapping`.
- 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.