drivers/gpu/drm/nouveau/nvkm/engine/sw/nvsw.c
Source file repositories/reference/linux-study-clean/drivers/gpu/drm/nouveau/nvkm/engine/sw/nvsw.c
File Facts
- System
- Linux kernel
- Corpus path
drivers/gpu/drm/nouveau/nvkm/engine/sw/nvsw.c- Extension
.c- Size
- 2579 bytes
- Lines
- 87
- 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.
- Allocates kernel memory; connect allocation flags and lifetime to context constraints.
- Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.
Dependency Surface
nvsw.hchan.hnvif/if0004.h
Detected Declarations
function filesfunction nvkm_nvsw_mthdfunction nvkm_nvsw_new_function nvkm_nvsw_new
Annotated Snippet
#include "nvsw.h"
#include "chan.h"
#include <nvif/if0004.h>
static int
nvkm_nvsw_uevent(struct nvkm_object *object, void *argv, u32 argc, struct nvkm_uevent *uevent)
{
union nv04_nvsw_event_args *args = argv;
if (!uevent)
return 0;
if (argc != sizeof(args->vn))
return -ENOSYS;
return nvkm_uevent_add(uevent, &nvkm_nvsw(object)->chan->event, 0,
NVKM_SW_CHAN_EVENT_PAGE_FLIP, NULL);
}
static int
nvkm_nvsw_mthd(struct nvkm_object *object, u32 mthd, void *data, u32 size)
{
struct nvkm_nvsw *nvsw = nvkm_nvsw(object);
if (nvsw->func->mthd)
return nvsw->func->mthd(nvsw, mthd, data, size);
return -ENODEV;
}
static const struct nvkm_object_func
nvkm_nvsw_ = {
.mthd = nvkm_nvsw_mthd,
.uevent = nvkm_nvsw_uevent,
};
int
nvkm_nvsw_new_(const struct nvkm_nvsw_func *func, struct nvkm_sw_chan *chan,
const struct nvkm_oclass *oclass, void *data, u32 size,
struct nvkm_object **pobject)
{
struct nvkm_nvsw *nvsw;
if (!(nvsw = kzalloc_obj(*nvsw)))
return -ENOMEM;
*pobject = &nvsw->object;
nvkm_object_ctor(&nvkm_nvsw_, oclass, &nvsw->object);
nvsw->func = func;
nvsw->chan = chan;
return 0;
}
static const struct nvkm_nvsw_func
nvkm_nvsw = {
};
int
nvkm_nvsw_new(struct nvkm_sw_chan *chan, const struct nvkm_oclass *oclass,
void *data, u32 size, struct nvkm_object **pobject)
{
return nvkm_nvsw_new_(&nvkm_nvsw, chan, oclass, data, size, pobject);
}
Annotation
- Immediate include surface: `nvsw.h`, `chan.h`, `nvif/if0004.h`.
- Detected declarations: `function files`, `function nvkm_nvsw_mthd`, `function nvkm_nvsw_new_`, `function nvkm_nvsw_new`.
- 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.