drivers/gpu/drm/nouveau/nvkm/subdev/fault/gp100.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/nouveau/nvkm/subdev/fault/gp100.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/nouveau/nvkm/subdev/fault/gp100.c
Extension
.c
Size
2873 bytes
Lines
90
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 <core/memory.h>
#include <subdev/mc.h>

#include <nvif/class.h>

void
gp100_fault_buffer_intr(struct nvkm_fault_buffer *buffer, bool enable)
{
	struct nvkm_device *device = buffer->fault->subdev.device;
	nvkm_mc_intr_mask(device, NVKM_SUBDEV_FAULT, 0, enable);
}

void
gp100_fault_buffer_fini(struct nvkm_fault_buffer *buffer)
{
	struct nvkm_device *device = buffer->fault->subdev.device;
	nvkm_mask(device, 0x002a70, 0x00000001, 0x00000000);
}

void
gp100_fault_buffer_init(struct nvkm_fault_buffer *buffer)
{
	struct nvkm_device *device = buffer->fault->subdev.device;
	nvkm_wr32(device, 0x002a74, upper_32_bits(buffer->addr));
	nvkm_wr32(device, 0x002a70, lower_32_bits(buffer->addr));
	nvkm_mask(device, 0x002a70, 0x00000001, 0x00000001);
}

u64 gp100_fault_buffer_pin(struct nvkm_fault_buffer *buffer)
{
	return nvkm_memory_bar2(buffer->mem);
}

void
gp100_fault_buffer_info(struct nvkm_fault_buffer *buffer)
{
	buffer->entries = nvkm_rd32(buffer->fault->subdev.device, 0x002a78);
	buffer->get = 0x002a7c;
	buffer->put = 0x002a80;
}

void
gp100_fault_intr(struct nvkm_fault *fault)
{
	nvkm_event_ntfy(&fault->event, 0, NVKM_FAULT_BUFFER_EVENT_PENDING);
}

static const struct nvkm_fault_func
gp100_fault = {
	.intr = gp100_fault_intr,
	.buffer.nr = 1,
	.buffer.entry_size = 32,
	.buffer.info = gp100_fault_buffer_info,
	.buffer.pin = gp100_fault_buffer_pin,
	.buffer.init = gp100_fault_buffer_init,
	.buffer.fini = gp100_fault_buffer_fini,
	.buffer.intr = gp100_fault_buffer_intr,
	.user = { { 0, 0, MAXWELL_FAULT_BUFFER_A }, 0 },
};

int
gp100_fault_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
		struct nvkm_fault **pfault)
{
	return nvkm_fault_new_(&gp100_fault, device, type, inst, pfault);
}

Annotation

Implementation Notes