drivers/gpu/drm/nouveau/nvkm/subdev/mmu/gf100.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/gf100.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/nouveau/nvkm/subdev/mmu/gf100.c
Extension
.c
Size
3748 bytes
Lines
92
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.

Dependency Surface

Detected Declarations

Annotated Snippet

#include "mem.h"
#include "vmm.h"

#include <nvif/class.h>

/* Map from compressed to corresponding uncompressed storage type.
 * The value 0xff represents an invalid storage type.
 */
const u8 *
gf100_mmu_kind(struct nvkm_mmu *mmu, int *count, u8 *invalid)
{
	static const u8
	kind[256] = {
		0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0xff, 0x01, /* 0x00 */
		0x01, 0x01, 0x01, 0xff, 0xff, 0xff, 0xff, 0xff,
		0xff, 0x11, 0xff, 0xff, 0xff, 0xff, 0xff, 0x11, /* 0x10 */
		0x11, 0x11, 0x11, 0xff, 0xff, 0xff, 0xff, 0xff,
		0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x26, 0x27, /* 0x20 */
		0x28, 0x29, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
		0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0x30 */
		0xff, 0xff, 0x26, 0x27, 0x28, 0x29, 0x26, 0x27,
		0x28, 0x29, 0xff, 0xff, 0xff, 0xff, 0x46, 0xff, /* 0x40 */
		0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
		0xff, 0x46, 0x46, 0x46, 0x46, 0xff, 0xff, 0xff, /* 0x50 */
		0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
		0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0x60 */
		0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
		0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0x70 */
		0xff, 0xff, 0xff, 0x7b, 0xff, 0xff, 0xff, 0xff,
		0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7b, 0x7b, /* 0x80 */
		0x7b, 0x7b, 0xff, 0x8b, 0x8c, 0x8d, 0x8e, 0xff,
		0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0x90 */
		0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
		0xff, 0xff, 0xff, 0x8b, 0x8c, 0x8d, 0x8e, 0xa7, /* 0xa0 */
		0xa8, 0xa9, 0xaa, 0xff, 0xff, 0xff, 0xff, 0xff,
		0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0xb0 */
		0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xa7,
		0xa8, 0xa9, 0xaa, 0xc3, 0xff, 0xff, 0xff, 0xff, /* 0xc0 */
		0xff, 0xff, 0xff, 0xff, 0xfe, 0xfe, 0xc3, 0xc3,
		0xc3, 0xc3, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0xd0 */
		0xfe, 0xff, 0xff, 0xfe, 0xff, 0xfe, 0xff, 0xfe,
		0xfe, 0xff, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xff, /* 0xe0 */
		0xff, 0xfe, 0xff, 0xfe, 0xff, 0xfe, 0xfe, 0xff,
		0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, /* 0xf0 */
		0xfe, 0xfe, 0xfe, 0xfe, 0xff, 0xfd, 0xfe, 0xff
	};

	*count = ARRAY_SIZE(kind);
	*invalid = 0xff;
	return kind;
}

static const struct nvkm_mmu_func
gf100_mmu = {
	.dma_bits = 40,
	.mmu = {{ -1, -1, NVIF_CLASS_MMU_GF100}},
	.mem = {{ -1,  0, NVIF_CLASS_MEM_GF100}, gf100_mem_new, gf100_mem_map },
	.vmm = {{ -1, -1, NVIF_CLASS_VMM_GF100}, gf100_vmm_new },
	.kind = gf100_mmu_kind,
	.kind_sys = true,
};

int
gf100_mmu_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
	      struct nvkm_mmu **pmmu)
{
	return nvkm_mmu_new_(&gf100_mmu, device, type, inst, pmmu);
}

Annotation

Implementation Notes