drivers/gpu/drm/nouveau/nvkm/subdev/acr/ga102.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/nouveau/nvkm/subdev/acr/ga102.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/nouveau/nvkm/subdev/acr/ga102.c
Extension
.c
Size
9527 bytes
Lines
331
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

list_for_each_entry(lsfw, &acr->lsfw, head) {
			if (lsfw->id != hdr.wpr.falcon_id)
				continue;

			nvkm_robj(acr->wpr, hdr.wpr.lsb_offset, lsb, sizeof(*lsb));
			lsb_header_v2_dump(&acr->subdev, lsb);

			lsfw->func->bld_patch(acr, lsb->bl_data_off, adjust);
			break;
		}

		offset += sizeof(hdr);
	} while (hdr.wpr.falcon_id != WPR_HEADER_V1_FALCON_ID_INVALID);

	kvfree(lsb);
	return 0;
}

static int
ga102_acr_wpr_build_lsb(struct nvkm_acr *acr, struct nvkm_acr_lsfw *lsfw)
{
	struct lsb_header_v2 *hdr;
	int ret = 0;

	if (WARN_ON(lsfw->sig->size != sizeof(hdr->signature)))
		return -EINVAL;

	hdr = kvzalloc_obj(*hdr);
	if (!hdr)
		return -ENOMEM;

	hdr->hdr.identifier = WPR_GENERIC_HEADER_ID_LSF_LSB_HEADER;
	hdr->hdr.version = 2;
	hdr->hdr.size = sizeof(*hdr);

	memcpy(&hdr->signature, lsfw->sig->data, lsfw->sig->size);
	hdr->ucode_off = lsfw->offset.img;
	hdr->ucode_size = lsfw->ucode_size;
	hdr->data_size = lsfw->data_size;
	hdr->bl_code_size = lsfw->bootloader_size;
	hdr->bl_imem_off = lsfw->bootloader_imem_offset;
	hdr->bl_data_off = lsfw->offset.bld;
	hdr->bl_data_size = lsfw->bl_data_size;
	hdr->app_code_off = lsfw->app_start_offset + lsfw->app_resident_code_offset;
	hdr->app_code_size = ALIGN(lsfw->app_resident_code_size, 0x100);
	hdr->app_data_off = lsfw->app_start_offset + lsfw->app_resident_data_offset;
	hdr->app_data_size = ALIGN(lsfw->app_resident_data_size, 0x100);
	hdr->app_imem_offset = lsfw->app_imem_offset;
	hdr->app_dmem_offset = lsfw->app_dmem_offset;
	hdr->flags = lsfw->func->flags;
	hdr->monitor_code_offset = 0;
	hdr->monitor_data_offset = 0;
	hdr->manifest_offset = 0;

	if (lsfw->secure_bootloader) {
		struct nvkm_falcon_fw fw = {
			.fw.img = hdr->hs_fmc_params.pkc_signature,
			.fw.name = "LSFW",
			.func = &(const struct nvkm_falcon_fw_func) {
				.signature = ga100_flcn_fw_signature,
			},
			.sig_size = lsfw->sig_size,
			.sig_nr = lsfw->sig_nr,
			.sigs = lsfw->sigs,
			.fuse_ver = lsfw->fuse_ver,
			.engine_id = lsfw->engine_id,
			.ucode_id = lsfw->ucode_id,
			.falcon = lsfw->falcon,

		};

		ret = nvkm_falcon_get(fw.falcon, &acr->subdev);
		if (ret == 0) {
			hdr->hs_fmc_params.hs_fmc = 1;
			hdr->hs_fmc_params.pkc_algo = 0;
			hdr->hs_fmc_params.pkc_algo_version = 1;
			hdr->hs_fmc_params.engid_mask = lsfw->engine_id;
			hdr->hs_fmc_params.ucode_id = lsfw->ucode_id;
			hdr->hs_fmc_params.fuse_ver = lsfw->fuse_ver;
			ret = nvkm_falcon_fw_patch(&fw);
			nvkm_falcon_put(fw.falcon, &acr->subdev);
		}
	}

	nvkm_wobj(acr->wpr, lsfw->offset.lsb, hdr, sizeof(*hdr));
	kvfree(hdr);
	return ret;
}

static int

Annotation

Implementation Notes