drivers/gpu/drm/nouveau/nvkm/subdev/fb/gp102.c
Source file repositories/reference/linux-study-clean/drivers/gpu/drm/nouveau/nvkm/subdev/fb/gp102.c
File Facts
- System
- Linux kernel
- Corpus path
drivers/gpu/drm/nouveau/nvkm/subdev/fb/gp102.c- Extension
.c- Size
- 2989 bytes
- Lines
- 93
- 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
gf100.hram.hengine/nvdec.h
Detected Declarations
function filesfunction gp102_fb_vpr_scrub_requiredfunction gp102_fb_vidmem_sizefunction gp102_fb_oneinitfunction gp102_fb_new
Annotated Snippet
#include "gf100.h"
#include "ram.h"
#include <engine/nvdec.h>
int
gp102_fb_vpr_scrub(struct nvkm_fb *fb)
{
return nvkm_falcon_fw_boot(&fb->vpr_scrubber, &fb->subdev, true, NULL, NULL, 0, 0x00000000);
}
bool
gp102_fb_vpr_scrub_required(struct nvkm_fb *fb)
{
struct nvkm_device *device = fb->subdev.device;
nvkm_wr32(device, 0x100cd0, 0x2);
return (nvkm_rd32(device, 0x100cd0) & 0x00000010) != 0;
}
u64
gp102_fb_vidmem_size(struct nvkm_fb *fb)
{
const u32 data = nvkm_rd32(fb->subdev.device, 0x100ce0);
const u32 lmag = (data & 0x000003f0) >> 4;
const u32 lsca = (data & 0x0000000f);
const u64 size = (u64)lmag << (lsca + 20);
if (data & 0x40000000)
return size / 16 * 15;
return size;
}
int
gp102_fb_oneinit(struct nvkm_fb *fb)
{
struct nvkm_subdev *subdev = &fb->subdev;
nvkm_falcon_fw_ctor_hs(&gm200_flcn_fw, "mem-unlock", subdev, NULL, "nvdec/scrubber",
0, &subdev->device->nvdec[0]->falcon, &fb->vpr_scrubber);
return gf100_fb_oneinit(fb);
}
static const struct nvkm_fb_func
gp102_fb = {
.dtor = gf100_fb_dtor,
.oneinit = gp102_fb_oneinit,
.init = gm200_fb_init,
.init_remapper = gp100_fb_init_remapper,
.init_page = gm200_fb_init_page,
.sysmem.flush_page_init = gf100_fb_sysmem_flush_page_init,
.vidmem.size = gp102_fb_vidmem_size,
.vpr.scrub_required = gp102_fb_vpr_scrub_required,
.vpr.scrub = gp102_fb_vpr_scrub,
.ram_new = gp102_ram_new,
};
int
gp102_fb_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb)
{
return gf100_fb_new_(&gp102_fb, device, type, inst, pfb);
}
MODULE_FIRMWARE("nvidia/gp102/nvdec/scrubber.bin");
MODULE_FIRMWARE("nvidia/gp104/nvdec/scrubber.bin");
MODULE_FIRMWARE("nvidia/gp106/nvdec/scrubber.bin");
MODULE_FIRMWARE("nvidia/gp107/nvdec/scrubber.bin");
MODULE_FIRMWARE("nvidia/gp108/nvdec/scrubber.bin");
Annotation
- Immediate include surface: `gf100.h`, `ram.h`, `engine/nvdec.h`.
- Detected declarations: `function files`, `function gp102_fb_vpr_scrub_required`, `function gp102_fb_vidmem_size`, `function gp102_fb_oneinit`, `function gp102_fb_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.