drivers/gpu/drm/nouveau/nvkm/engine/ce/gk104.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/nouveau/nvkm/engine/ce/gk104.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/nouveau/nvkm/engine/ce/gk104.c
Extension
.c
Size
3239 bytes
Lines
102
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/enum.h>

#include <nvif/class.h>

static const struct nvkm_enum
gk104_ce_launcherr_report[] = {
	{ 0x0, "NO_ERR" },
	{ 0x1, "2D_LAYER_EXCEEDS_DEPTH" },
	{ 0x2, "INVALID_ARGUMENT" },
	{ 0x3, "MEM2MEM_RECT_OUT_OF_BOUNDS" },
	{ 0x4, "SRC_LINE_EXCEEDS_PITCH" },
	{ 0x5, "SRC_LINE_EXCEEDS_NEG_PITCH" },
	{ 0x6, "DST_LINE_EXCEEDS_PITCH" },
	{ 0x7, "DST_LINE_EXCEEDS_NEG_PITCH" },
	{ 0x8, "BAD_SRC_PIXEL_COMP_REF" },
	{ 0x9, "INVALID_VALUE" },
	{ 0xa, "UNUSED_FIELD" },
	{ 0xb, "INVALID_OPERATION" },
	{}
};

static void
gk104_ce_intr_launcherr(struct nvkm_engine *ce, const u32 base)
{
	struct nvkm_subdev *subdev = &ce->subdev;
	struct nvkm_device *device = subdev->device;
	u32 stat = nvkm_rd32(device, 0x104f14 + base);
	const struct nvkm_enum *en =
		nvkm_enum_find(gk104_ce_launcherr_report, stat & 0x0000000f);
	nvkm_warn(subdev, "LAUNCHERR %08x [%s]\n", stat, en ? en->name : "");
	nvkm_wr32(device, 0x104f14 + base, 0x00000000);
}

void
gk104_ce_intr(struct nvkm_engine *ce)
{
	struct nvkm_subdev *subdev = &ce->subdev;
	struct nvkm_device *device = subdev->device;
	const u32 base = subdev->inst * 0x1000;
	u32 mask = nvkm_rd32(device, 0x104904 + base);
	u32 intr = nvkm_rd32(device, 0x104908 + base) & mask;
	if (intr & 0x00000001) {
		nvkm_warn(subdev, "BLOCKPIPE\n");
		nvkm_wr32(device, 0x104908 + base, 0x00000001);
		intr &= ~0x00000001;
	}
	if (intr & 0x00000002) {
		nvkm_warn(subdev, "NONBLOCKPIPE\n");
		nvkm_wr32(device, 0x104908 + base, 0x00000002);
		intr &= ~0x00000002;
	}
	if (intr & 0x00000004) {
		gk104_ce_intr_launcherr(ce, base);
		nvkm_wr32(device, 0x104908 + base, 0x00000004);
		intr &= ~0x00000004;
	}
	if (intr) {
		nvkm_warn(subdev, "intr %08x\n", intr);
		nvkm_wr32(device, 0x104908 + base, intr);
	}
}

static const struct nvkm_engine_func
gk104_ce = {
	.intr = gk104_ce_intr,
	.sclass = {
		{ -1, -1, KEPLER_DMA_COPY_A },
		{}
	}
};

int
gk104_ce_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
	     struct nvkm_engine **pengine)
{
	return nvkm_engine_new_(&gk104_ce, device, type, inst, true, pengine);
}

Annotation

Implementation Notes