drivers/gpu/drm/nouveau/nvkm/subdev/mc/ga100.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/nouveau/nvkm/subdev/mc/ga100.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/nouveau/nvkm/subdev/mc/ga100.c
Extension
.c
Size
2427 bytes
Lines
82
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 "priv.h"

#include <subdev/gsp.h>

static void
ga100_mc_device_disable(struct nvkm_mc *mc, u32 mask)
{
	struct nvkm_device *device = mc->subdev.device;

	nvkm_mask(device, 0x000600, mask, 0x00000000);
	nvkm_rd32(device, 0x000600);
	nvkm_rd32(device, 0x000600);
}

static void
ga100_mc_device_enable(struct nvkm_mc *mc, u32 mask)
{
	struct nvkm_device *device = mc->subdev.device;

	nvkm_mask(device, 0x000600, mask, mask);
	nvkm_rd32(device, 0x000600);
	nvkm_rd32(device, 0x000600);
}

static bool
ga100_mc_device_enabled(struct nvkm_mc *mc, u32 mask)
{
	return (nvkm_rd32(mc->subdev.device, 0x000600) & mask) == mask;
}

static const struct nvkm_mc_device_func
ga100_mc_device = {
	.enabled = ga100_mc_device_enabled,
	.enable = ga100_mc_device_enable,
	.disable = ga100_mc_device_disable,
};

static void
ga100_mc_init(struct nvkm_mc *mc)
{
	struct nvkm_device *device = mc->subdev.device;

	nvkm_wr32(device, 0x000200, 0xffffffff);
	nvkm_wr32(device, 0x000600, 0xffffffff);
}

static const struct nvkm_mc_func
ga100_mc = {
	.init = ga100_mc_init,
	.device = &ga100_mc_device,
};

int
ga100_mc_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_mc **pmc)
{
	if (nvkm_gsp_rm(device->gsp))
		return -ENODEV;

	return nvkm_mc_new_(&ga100_mc, device, type, inst, pmc);
}

Annotation

Implementation Notes