githubmirror/efivar

src/dp-hw.c
123 строки3 KB
Peter Jones
Use efi_error() at lots of places.
10 авг 2016, 22:23
10 авг 2016, 22:23db72014
/*
 * libefivar - library for the manipulation of EFI variables
 * Copyright 2012-2015 Red Hat, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of the
 * License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, see
 * <http://www.gnu.org/licenses/>.
 *
 */

#include <errno.h>
#include <inttypes.h>

#include <efivar.h>
#include "dp.h"

ssize_t
format_edd10_guid(char *buf, size_t size, const char *dp_type, const_efidp dp)
{
	ssize_t off = 0;
	efidp_edd10 const *edd_dp = (efidp_edd10 *)dp;
	format(buf, size, off, dp_type, "EDD10(0x%"PRIx32")",
		    edd_dp->hardware_device);
	return off;
}

ssize_t
_format_hw_dn(char *buf, size_t size, const_efidp dp)
{
	efi_guid_t edd10_guid = EDD10_HARDWARE_VENDOR_PATH_GUID;
	ssize_t off = 0;
	switch (dp->subtype) {
	case EFIDP_HW_PCI:
		format(buf, size, off, "Pci", "Pci(0x%"PRIx32",0x%"PRIx32")",
		       dp->pci.device, dp->pci.function);
		break;
	case EFIDP_HW_PCCARD:
		format(buf, size, off, "PcCard", "PcCard(0x%"PRIx32")",
		       dp->pccard.function);
		break;
	case EFIDP_HW_MMIO:
		format(buf, size, off, "MemoryMapped",
		       "MemoryMapped(%"PRIu32",0x%"PRIx64",0x%"PRIx64")",
		       dp->mmio.memory_type, dp->mmio.starting_address,
		       dp->mmio.ending_address);
		break;
	case EFIDP_HW_VENDOR:
		if (!efi_guid_cmp(&dp->hw_vendor.vendor_guid, &edd10_guid)) {
			format_helper(format_edd10_guid, buf, size, off,
				      "EDD 1.0", dp);
		} else {
			format_vendor(buf, size, off, "VenHw", dp);
		}
		break;
	case EFIDP_HW_CONTROLLER:
		format(buf, size, off, "Ctrl", "Ctrl(0x%"PRIx32")",
		       dp->controller.controller);
		break;
	case EFIDP_HW_BMC:
		format(buf, size, off, "BMC", "BMC(%d,0x%"PRIx64")",
		       dp->bmc.interface_type, dp->bmc.base_addr);
		break;
	default:
		format(buf, size, off, "Hardware",
		       "HardwarePath(%d,", dp->subtype);
		format_hex(buf, size, off, "Hardware", (uint8_t *)dp+4,
			   efidp_node_size(dp)-4);
		format(buf, size, off, "Hardware", ")");
		break;
	}
	return off;
}

ssize_t
__attribute__((__visibility__ ("default")))
efidp_make_pci(uint8_t *buf, ssize_t size, uint8_t device, uint8_t function)
{
	efidp_pci *pci = (efidp_pci *)buf;
	ssize_t sz;
	ssize_t req = sizeof (*pci);
	sz = efidp_make_generic(buf, size, EFIDP_HARDWARE_TYPE, EFIDP_HW_PCI,
				req);
	if (size && sz == req) {
		pci->device = device;
		pci->function = function;
	}

	if (sz < 0)
		efi_error("efidp_make_generic failed");

	return sz;
}

ssize_t
__attribute__((__visibility__ ("default")))
efidp_make_edd10(uint8_t *buf, ssize_t size, uint32_t hardware_device)
{
	efi_guid_t edd10_guid = EDD10_HARDWARE_VENDOR_PATH_GUID;
	efidp_edd10 *edd_dp = (efidp_edd10 *)buf;
	ssize_t sz;
	ssize_t req = sizeof (*edd_dp);
	sz = efidp_make_generic(buf, size, EFIDP_HARDWARE_TYPE, EFIDP_HW_VENDOR,
				req);
	if (size && sz == req) {
		memcpy(&edd_dp->vendor_guid, &edd10_guid, sizeof (edd10_guid));
		edd_dp->hardware_device = hardware_device;
	}

	if (sz < 0)
		efi_error("efidp_make_generic failed");

	return sz;
}