drivers/gpu/drm/nouveau/nvkm/engine/sw/gf100.c

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

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/nouveau/nvkm/engine/sw/gf100.c
Extension
.c
Size
4424 bytes
Lines
148
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

if (data < device->disp->vblank.index_nr) {
			nvkm_event_ntfy_allow(&chan->vblank.notify[data]);
			return true;
		}
		break;
	case 0x600: /* MP.PM_UNK000 */
		nvkm_wr32(device, 0x419e00, data);
		return true;
	case 0x644: /* MP.TRAP_WARP_ERROR_EN */
		if (!(data & ~0x001ffffe)) {
			nvkm_wr32(device, 0x419e44, data);
			return true;
		}
		break;
	case 0x6ac: /* MP.PM_UNK0AC */
		nvkm_wr32(device, 0x419eac, data);
		return true;
	default:
		break;
	}
	return false;
}

static const struct nvkm_sw_chan_func
gf100_sw_chan = {
	.dtor = nv50_sw_chan_dtor,
	.mthd = gf100_sw_chan_mthd,
};

static int
gf100_sw_chan_new(struct nvkm_sw *sw, struct nvkm_chan *fifoch,
		  const struct nvkm_oclass *oclass,
		  struct nvkm_object **pobject)
{
	struct nvkm_disp *disp = sw->engine.subdev.device->disp;
	struct nv50_sw_chan *chan;
	int ret, i;

	if (!(chan = kzalloc_obj(*chan)))
		return -ENOMEM;
	*pobject = &chan->base.object;

	ret = nvkm_sw_chan_ctor(&gf100_sw_chan, sw, fifoch, oclass,
				&chan->base);
	if (ret)
		return ret;

	for (i = 0; disp && i < disp->vblank.index_nr; i++) {
		nvkm_event_ntfy_add(&disp->vblank, i, NVKM_DISP_HEAD_EVENT_VBLANK, true,
				    gf100_sw_chan_vblsem_release, &chan->vblank.notify[i]);
	}

	return 0;
}

/*******************************************************************************
 * software engine/subdev functions
 ******************************************************************************/

static const struct nvkm_sw_func
gf100_sw = {
	.chan_new = gf100_sw_chan_new,
	.sclass = {
		{ nvkm_nvsw_new, { -1, -1, NVIF_CLASS_SW_GF100 } },
		{}
	}
};

int
gf100_sw_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_sw **psw)
{
	return nvkm_sw_new_(&gf100_sw, device, type, inst, psw);
}

Annotation

Implementation Notes