11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 2f30c2269544bffc7bf1b0d7c0abe5be1be83b8cbUwe Zeisberger * linux/drivers/firmware/edd.c 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (C) 2002, 2003, 2004 Dell Inc. 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * by Matt Domsch <Matt_Domsch@dell.com> 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * disk signature by Matt Domsch, Andrew Wilks, and Sandeep K. Shandilya 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * legacy CHS by Patrick J. LoPresti <patl@users.sourceforge.net> 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * BIOS Enhanced Disk Drive Services (EDD) 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * conformant to T13 Committee www.t13.org 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * projects 1572D, 1484D, 1386D, 1226DT 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This code takes information provided by BIOS EDD calls 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * fn41 - Check Extensions Present and 14d48140e3cdd9da2ccce2251bedf5bbb3f16344f7Joe Perches * fn48 - Get Device Parameters with EDD extensions 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * made in setup.S, copied to safe structures in setup.c, 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * and presents it in sysfs. 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 18631dd1a885b6d7e9f6f51b4e5b311c2bb04c323cJustin P. Mattock * Please see http://linux.dell.com/edd/results.html for 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the list of BIOSs which have been reported to implement EDD. 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This program is free software; you can redistribute it and/or modify 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * it under the terms of the GNU General Public License v2.0 as published by 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the Free Software Foundation 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This program is distributed in the hope that it will be useful, 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * but WITHOUT ANY WARRANTY; without even the implied warranty of 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * GNU General Public License for more details. 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/module.h> 331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/string.h> 341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/types.h> 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/init.h> 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/stat.h> 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/err.h> 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/ctype.h> 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/slab.h> 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/limits.h> 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/device.h> 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/pci.h> 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/blkdev.h> 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/edd.h> 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define EDD_VERSION "0.16" 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define EDD_DATE "2004-Jun-25" 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_AUTHOR("Matt Domsch <Matt_Domsch@Dell.com>"); 501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_DESCRIPTION("sysfs interface to BIOS EDD information"); 511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_LICENSE("GPL"); 521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_VERSION(EDD_VERSION); 531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define left (PAGE_SIZE - (p - buf) - 1) 551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct edd_device { 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int index; 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int mbr_signature; 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct edd_info *info; 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct kobject kobj; 611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct edd_attribute { 641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct attribute attr; 651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ssize_t(*show) (struct edd_device * edev, char *buf); 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int (*test) (struct edd_device * edev); 671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* forward declarations */ 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int edd_dev_is_type(struct edd_device *edev, const char *type); 711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct pci_dev *edd_get_pci_dev(struct edd_device *edev); 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct edd_device *edd_devices[EDD_MBR_SIG_MAX]; 741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define EDD_DEVICE_ATTR(_name,_mode,_show,_test) \ 761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct edd_attribute edd_attr_##_name = { \ 777b595756ec1f49e0049a9e01a1298d53a7faaa15Tejun Heo .attr = {.name = __stringify(_name), .mode = _mode }, \ 781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .show = _show, \ 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .test = _test, \ 801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsedd_has_mbr_signature(struct edd_device *edev) 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return edev->index < min_t(unsigned char, edd.mbr_signature_nr, EDD_MBR_SIG_MAX); 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsedd_has_edd_info(struct edd_device *edev) 901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return edev->index < min_t(unsigned char, edd.edd_info_nr, EDDMAXNR); 921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline struct edd_info * 951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsedd_dev_get_info(struct edd_device *edev) 961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return edev->info; 981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void 1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsedd_dev_set_info(struct edd_device *edev, int i) 1021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds edev->index = i; 1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (edd_has_mbr_signature(edev)) 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds edev->mbr_signature = edd.mbr_signature[i]; 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (edd_has_edd_info(edev)) 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds edev->info = &edd.edd_info[i]; 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define to_edd_attr(_attr) container_of(_attr,struct edd_attribute,attr) 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define to_edd_device(obj) container_of(obj,struct edd_device,kobj) 1121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic ssize_t 1141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsedd_attr_show(struct kobject * kobj, struct attribute *attr, char *buf) 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct edd_device *dev = to_edd_device(kobj); 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct edd_attribute *edd_attr = to_edd_attr(attr); 11870f2817a43c89b784dc2ec3d06ba5bf3064f8235Dmitry Torokhov ssize_t ret = -EIO; 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (edd_attr->show) 1211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret = edd_attr->show(dev, buf); 1221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ret; 1231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12552cf25d0ab7f78eeecc59ac652ed5090f69b619eEmese Revfystatic const struct sysfs_ops edd_attr_ops = { 1261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .show = edd_attr_show, 1271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic ssize_t 1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsedd_show_host_bus(struct edd_device *edev, char *buf) 1311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct edd_info *info; 1331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *p = buf; 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 1351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!edev) 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info = edd_dev_get_info(edev); 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info || !buf) 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < 4; i++) { 1431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (isprint(info->params.host_bus_type[i])) { 1441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += scnprintf(p, left, "%c", info->params.host_bus_type[i]); 1451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += scnprintf(p, left, " "); 1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!strncmp(info->params.host_bus_type, "ISA", 3)) { 1511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += scnprintf(p, left, "\tbase_address: %x\n", 1521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.interface_path.isa.base_address); 1531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (!strncmp(info->params.host_bus_type, "PCIX", 4) || 154044aceef33bba7a471a3ed47ac60998b2983b18bMichael Chan !strncmp(info->params.host_bus_type, "PCI", 3) || 155044aceef33bba7a471a3ed47ac60998b2983b18bMichael Chan !strncmp(info->params.host_bus_type, "XPRS", 4)) { 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += scnprintf(p, left, 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "\t%02x:%02x.%d channel: %u\n", 1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.interface_path.pci.bus, 1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.interface_path.pci.slot, 1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.interface_path.pci.function, 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.interface_path.pci.channel); 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (!strncmp(info->params.host_bus_type, "IBND", 4) || 1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds !strncmp(info->params.host_bus_type, "HTPT", 4)) { 1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += scnprintf(p, left, 1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "\tTBD: %llx\n", 1661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.interface_path.ibnd.reserved); 1671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 1691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += scnprintf(p, left, "\tunknown: %llx\n", 1701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.interface_path.unknown.reserved); 1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (p - buf); 1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic ssize_t 1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsedd_show_interface(struct edd_device *edev, char *buf) 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct edd_info *info; 1791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *p = buf; 1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!edev) 1831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 1841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info = edd_dev_get_info(edev); 1851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info || !buf) 1861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 1871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < 8; i++) { 1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (isprint(info->params.interface_type[i])) { 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += scnprintf(p, left, "%c", info->params.interface_type[i]); 1911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 1921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += scnprintf(p, left, " "); 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!strncmp(info->params.interface_type, "ATAPI", 5)) { 1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += scnprintf(p, left, "\tdevice: %u lun: %u\n", 1971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.device_path.atapi.device, 1981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.device_path.atapi.lun); 1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (!strncmp(info->params.interface_type, "ATA", 3)) { 2001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += scnprintf(p, left, "\tdevice: %u\n", 2011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.device_path.ata.device); 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (!strncmp(info->params.interface_type, "SCSI", 4)) { 2031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += scnprintf(p, left, "\tid: %u lun: %llu\n", 2041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.device_path.scsi.id, 2051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.device_path.scsi.lun); 2061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (!strncmp(info->params.interface_type, "USB", 3)) { 2071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += scnprintf(p, left, "\tserial_number: %llx\n", 2081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.device_path.usb.serial_number); 2091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (!strncmp(info->params.interface_type, "1394", 4)) { 2101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += scnprintf(p, left, "\teui: %llx\n", 2111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.device_path.i1394.eui); 2121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (!strncmp(info->params.interface_type, "FIBRE", 5)) { 2131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += scnprintf(p, left, "\twwid: %llx lun: %llx\n", 2141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.device_path.fibre.wwid, 2151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.device_path.fibre.lun); 2161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (!strncmp(info->params.interface_type, "I2O", 3)) { 2171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += scnprintf(p, left, "\tidentity_tag: %llx\n", 2181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.device_path.i2o.identity_tag); 2191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (!strncmp(info->params.interface_type, "RAID", 4)) { 2201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += scnprintf(p, left, "\tidentity_tag: %x\n", 2211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.device_path.raid.array_number); 2221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (!strncmp(info->params.interface_type, "SATA", 4)) { 2231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += scnprintf(p, left, "\tdevice: %u\n", 2241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.device_path.sata.device); 2251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 2261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += scnprintf(p, left, "\tunknown: %llx %llx\n", 2271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.device_path.unknown.reserved1, 2281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.device_path.unknown.reserved2); 2291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (p - buf); 2321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 2351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * edd_show_raw_data() - copies raw data to buffer for userspace to parse 2366e8c818829587f001cacae5af4400e4e3aa90a37Randy Dunlap * @edev: target edd_device 2376e8c818829587f001cacae5af4400e4e3aa90a37Randy Dunlap * @buf: output buffer 2381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Returns: number of bytes written, or -EINVAL on failure 2401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic ssize_t 2421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsedd_show_raw_data(struct edd_device *edev, char *buf) 2431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct edd_info *info; 2451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ssize_t len = sizeof (info->params); 2461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!edev) 2471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 2481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info = edd_dev_get_info(edev); 2491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info || !buf) 2501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 2511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(info->params.key == 0xBEDD || info->params.key == 0xDDBE)) 2531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = info->params.length; 2541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* In case of buggy BIOSs */ 2561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (len > (sizeof(info->params))) 2571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds len = sizeof(info->params); 2581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy(buf, &info->params, len); 2601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return len; 2611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic ssize_t 2641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsedd_show_version(struct edd_device *edev, char *buf) 2651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct edd_info *info; 2671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *p = buf; 2681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!edev) 2691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 2701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info = edd_dev_get_info(edev); 2711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info || !buf) 2721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 2731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += scnprintf(p, left, "0x%02x\n", info->version); 2751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (p - buf); 2761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic ssize_t 2791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsedd_show_mbr_signature(struct edd_device *edev, char *buf) 2801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *p = buf; 2821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += scnprintf(p, left, "0x%08x\n", edev->mbr_signature); 2831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (p - buf); 2841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic ssize_t 2871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsedd_show_extensions(struct edd_device *edev, char *buf) 2881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct edd_info *info; 2901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *p = buf; 2911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!edev) 2921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 2931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info = edd_dev_get_info(edev); 2941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info || !buf) 2951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 2961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->interface_support & EDD_EXT_FIXED_DISK_ACCESS) { 2981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += scnprintf(p, left, "Fixed disk access\n"); 2991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->interface_support & EDD_EXT_DEVICE_LOCKING_AND_EJECTING) { 3011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += scnprintf(p, left, "Device locking and ejecting\n"); 3021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->interface_support & EDD_EXT_ENHANCED_DISK_DRIVE_SUPPORT) { 3041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += scnprintf(p, left, "Enhanced Disk Drive support\n"); 3051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->interface_support & EDD_EXT_64BIT_EXTENSIONS) { 3071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += scnprintf(p, left, "64-bit extensions\n"); 3081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (p - buf); 3101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic ssize_t 3131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsedd_show_info_flags(struct edd_device *edev, char *buf) 3141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct edd_info *info; 3161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *p = buf; 3171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!edev) 3181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 3191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info = edd_dev_get_info(edev); 3201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info || !buf) 3211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 3221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.info_flags & EDD_INFO_DMA_BOUNDARY_ERROR_TRANSPARENT) 3241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += scnprintf(p, left, "DMA boundary error transparent\n"); 3251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.info_flags & EDD_INFO_GEOMETRY_VALID) 3261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += scnprintf(p, left, "geometry valid\n"); 3271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.info_flags & EDD_INFO_REMOVABLE) 3281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += scnprintf(p, left, "removable\n"); 3291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.info_flags & EDD_INFO_WRITE_VERIFY) 3301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += scnprintf(p, left, "write verify\n"); 3311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.info_flags & EDD_INFO_MEDIA_CHANGE_NOTIFICATION) 3321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += scnprintf(p, left, "media change notification\n"); 3331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.info_flags & EDD_INFO_LOCKABLE) 3341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += scnprintf(p, left, "lockable\n"); 3351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.info_flags & EDD_INFO_NO_MEDIA_PRESENT) 3361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += scnprintf(p, left, "no media present\n"); 3371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (info->params.info_flags & EDD_INFO_USE_INT13_FN50) 3381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += scnprintf(p, left, "use int13 fn50\n"); 3391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (p - buf); 3401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic ssize_t 3431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsedd_show_legacy_max_cylinder(struct edd_device *edev, char *buf) 3441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct edd_info *info; 3461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *p = buf; 3471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!edev) 3481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 3491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info = edd_dev_get_info(edev); 3501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info || !buf) 3511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 3521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += snprintf(p, left, "%u\n", info->legacy_max_cylinder); 3541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (p - buf); 3551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic ssize_t 3581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsedd_show_legacy_max_head(struct edd_device *edev, char *buf) 3591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct edd_info *info; 3611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *p = buf; 3621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!edev) 3631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 3641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info = edd_dev_get_info(edev); 3651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info || !buf) 3661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 3671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += snprintf(p, left, "%u\n", info->legacy_max_head); 3691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (p - buf); 3701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic ssize_t 3731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsedd_show_legacy_sectors_per_track(struct edd_device *edev, char *buf) 3741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct edd_info *info; 3761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *p = buf; 3771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!edev) 3781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 3791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info = edd_dev_get_info(edev); 3801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info || !buf) 3811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 3821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += snprintf(p, left, "%u\n", info->legacy_sectors_per_track); 3841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (p - buf); 3851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic ssize_t 3881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsedd_show_default_cylinders(struct edd_device *edev, char *buf) 3891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct edd_info *info; 3911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *p = buf; 3921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!edev) 3931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 3941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info = edd_dev_get_info(edev); 3951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info || !buf) 3961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 3971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += scnprintf(p, left, "%u\n", info->params.num_default_cylinders); 3991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (p - buf); 4001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic ssize_t 4031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsedd_show_default_heads(struct edd_device *edev, char *buf) 4041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct edd_info *info; 4061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *p = buf; 4071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!edev) 4081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 4091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info = edd_dev_get_info(edev); 4101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info || !buf) 4111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 4121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += scnprintf(p, left, "%u\n", info->params.num_default_heads); 4141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (p - buf); 4151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic ssize_t 4181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsedd_show_default_sectors_per_track(struct edd_device *edev, char *buf) 4191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct edd_info *info; 4211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *p = buf; 4221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!edev) 4231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 4241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info = edd_dev_get_info(edev); 4251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info || !buf) 4261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 4271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += scnprintf(p, left, "%u\n", info->params.sectors_per_track); 4291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (p - buf); 4301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic ssize_t 4331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsedd_show_sectors(struct edd_device *edev, char *buf) 4341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct edd_info *info; 4361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *p = buf; 4371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!edev) 4381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 4391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info = edd_dev_get_info(edev); 4401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info || !buf) 4411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 4421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p += scnprintf(p, left, "%llu\n", info->params.number_of_sectors); 4441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (p - buf); 4451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Some device instances may not have all the above attributes, 4501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * or the attribute values may be meaningless (i.e. if 4511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the device is < EDD 3.0, it won't have host_bus and interface 4521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * information), so don't bother making files for them. Likewise 4531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * if the default_{cylinders,heads,sectors_per_track} values 4541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * are zero, the BIOS doesn't provide sane values, don't bother 4551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * creating files for them either. 4561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 4591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsedd_has_legacy_max_cylinder(struct edd_device *edev) 4601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct edd_info *info; 4621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!edev) 4631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 4641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info = edd_dev_get_info(edev); 4651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info) 4661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 4671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return info->legacy_max_cylinder > 0; 4681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 4711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsedd_has_legacy_max_head(struct edd_device *edev) 4721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct edd_info *info; 4741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!edev) 4751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 4761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info = edd_dev_get_info(edev); 4771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info) 4781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 4791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return info->legacy_max_head > 0; 4801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 4831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsedd_has_legacy_sectors_per_track(struct edd_device *edev) 4841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct edd_info *info; 4861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!edev) 4871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 4881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info = edd_dev_get_info(edev); 4891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info) 4901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 4911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return info->legacy_sectors_per_track > 0; 4921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 4951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsedd_has_default_cylinders(struct edd_device *edev) 4961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct edd_info *info; 4981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!edev) 4991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 5001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info = edd_dev_get_info(edev); 5011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info) 5021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 5031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return info->params.num_default_cylinders > 0; 5041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 5071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsedd_has_default_heads(struct edd_device *edev) 5081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct edd_info *info; 5101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!edev) 5111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 5121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info = edd_dev_get_info(edev); 5131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info) 5141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 5151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return info->params.num_default_heads > 0; 5161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 5191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsedd_has_default_sectors_per_track(struct edd_device *edev) 5201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct edd_info *info; 5221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!edev) 5231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 5241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info = edd_dev_get_info(edev); 5251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info) 5261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 5271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return info->params.sectors_per_track > 0; 5281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 5311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsedd_has_edd30(struct edd_device *edev) 5321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct edd_info *info; 5340c61227094b3ddaca2f847ee287c4a2e3762b5a2Gleb Natapov int i; 5350c61227094b3ddaca2f847ee287c4a2e3762b5a2Gleb Natapov u8 csum = 0; 5361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!edev) 5381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 5391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info = edd_dev_get_info(edev); 5401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!info) 5411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 5421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(info->params.key == 0xBEDD || info->params.key == 0xDDBE)) { 5441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 5451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5470c61227094b3ddaca2f847ee287c4a2e3762b5a2Gleb Natapov 5480c61227094b3ddaca2f847ee287c4a2e3762b5a2Gleb Natapov /* We support only T13 spec */ 5490c61227094b3ddaca2f847ee287c4a2e3762b5a2Gleb Natapov if (info->params.device_path_info_length != 44) 5500c61227094b3ddaca2f847ee287c4a2e3762b5a2Gleb Natapov return 0; 5510c61227094b3ddaca2f847ee287c4a2e3762b5a2Gleb Natapov 5520c61227094b3ddaca2f847ee287c4a2e3762b5a2Gleb Natapov for (i = 30; i < info->params.device_path_info_length + 30; i++) 5530c61227094b3ddaca2f847ee287c4a2e3762b5a2Gleb Natapov csum += *(((u8 *)&info->params) + i); 5540c61227094b3ddaca2f847ee287c4a2e3762b5a2Gleb Natapov 5550c61227094b3ddaca2f847ee287c4a2e3762b5a2Gleb Natapov if (csum) 5561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 5571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 1; 5591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic EDD_DEVICE_ATTR(raw_data, 0444, edd_show_raw_data, edd_has_edd_info); 5631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic EDD_DEVICE_ATTR(version, 0444, edd_show_version, edd_has_edd_info); 5641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic EDD_DEVICE_ATTR(extensions, 0444, edd_show_extensions, edd_has_edd_info); 5651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic EDD_DEVICE_ATTR(info_flags, 0444, edd_show_info_flags, edd_has_edd_info); 5661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic EDD_DEVICE_ATTR(sectors, 0444, edd_show_sectors, edd_has_edd_info); 5671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic EDD_DEVICE_ATTR(legacy_max_cylinder, 0444, 5681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds edd_show_legacy_max_cylinder, 5691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds edd_has_legacy_max_cylinder); 5701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic EDD_DEVICE_ATTR(legacy_max_head, 0444, edd_show_legacy_max_head, 5711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds edd_has_legacy_max_head); 5721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic EDD_DEVICE_ATTR(legacy_sectors_per_track, 0444, 5731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds edd_show_legacy_sectors_per_track, 5741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds edd_has_legacy_sectors_per_track); 5751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic EDD_DEVICE_ATTR(default_cylinders, 0444, edd_show_default_cylinders, 5761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds edd_has_default_cylinders); 5771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic EDD_DEVICE_ATTR(default_heads, 0444, edd_show_default_heads, 5781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds edd_has_default_heads); 5791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic EDD_DEVICE_ATTR(default_sectors_per_track, 0444, 5801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds edd_show_default_sectors_per_track, 5811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds edd_has_default_sectors_per_track); 5821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic EDD_DEVICE_ATTR(interface, 0444, edd_show_interface, edd_has_edd30); 5831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic EDD_DEVICE_ATTR(host_bus, 0444, edd_show_host_bus, edd_has_edd30); 5841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic EDD_DEVICE_ATTR(mbr_signature, 0444, edd_show_mbr_signature, edd_has_mbr_signature); 5851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* These are default attributes that are added for every edd 5881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * device discovered. There are none. 5891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 5901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct attribute * def_attrs[] = { 5911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NULL, 5921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 5931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* These attributes are conditional and only added for some devices. */ 5951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct edd_attribute * edd_attrs[] = { 5961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &edd_attr_raw_data, 5971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &edd_attr_version, 5981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &edd_attr_extensions, 5991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &edd_attr_info_flags, 6001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &edd_attr_sectors, 6011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &edd_attr_legacy_max_cylinder, 6021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &edd_attr_legacy_max_head, 6031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &edd_attr_legacy_sectors_per_track, 6041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &edd_attr_default_cylinders, 6051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &edd_attr_default_heads, 6061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &edd_attr_default_sectors_per_track, 6071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &edd_attr_interface, 6081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &edd_attr_host_bus, 6091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds &edd_attr_mbr_signature, 6101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds NULL, 6111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 6121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 6141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * edd_release - free edd structure 6151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * @kobj: kobject of edd structure 6161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 6171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This is called when the refcount of the edd structure 6181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * reaches 0. This should happen right after we unregister, 6191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * but just in case, we use the release callback anyway. 6201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void edd_release(struct kobject * kobj) 6231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct edd_device * dev = to_edd_device(kobj); 6251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree(dev); 6261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 628e89a4116ef345cf10c21f722dd1d8bfa9b7c7d58Greg Kroah-Hartmanstatic struct kobj_type edd_ktype = { 6291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .release = edd_release, 6301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .sysfs_ops = &edd_attr_ops, 6311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .default_attrs = def_attrs, 6321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 6331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6349651d350ab2c1b9ef1875be2a9def1c375e6503fGreg Kroah-Hartmanstatic struct kset *edd_kset; 6351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 6381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * edd_dev_is_type() - is this EDD device a 'type' device? 6396e8c818829587f001cacae5af4400e4e3aa90a37Randy Dunlap * @edev: target edd_device 6406e8c818829587f001cacae5af4400e4e3aa90a37Randy Dunlap * @type: a host bus or interface identifier string per the EDD spec 6411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 6421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Returns 1 (TRUE) if it is a 'type' device, 0 otherwise. 6431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 6451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsedd_dev_is_type(struct edd_device *edev, const char *type) 6461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct edd_info *info; 6481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!edev) 6491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 6501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info = edd_dev_get_info(edev); 6511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (type && info) { 6531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!strncmp(info->params.host_bus_type, type, strlen(type)) || 6541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds !strncmp(info->params.interface_type, type, strlen(type))) 6551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 1; 6561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 6581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 6611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * edd_get_pci_dev() - finds pci_dev that matches edev 6626e8c818829587f001cacae5af4400e4e3aa90a37Randy Dunlap * @edev: edd_device 6631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 6641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Returns pci_dev if found, or NULL 6651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct pci_dev * 6671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsedd_get_pci_dev(struct edd_device *edev) 6681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct edd_info *info = edd_dev_get_info(edev); 6701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 671044aceef33bba7a471a3ed47ac60998b2983b18bMichael Chan if (edd_dev_is_type(edev, "PCI") || edd_dev_is_type(edev, "XPRS")) { 6721b28f22a87a5a2f0ab39f2549441bbe5eb2e369fAlan Cox return pci_get_bus_and_slot(info->params.interface_path.pci.bus, 6731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds PCI_DEVFN(info->params.interface_path.pci.slot, 6741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds info->params.interface_path.pci. 6751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds function)); 6761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 6781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 6811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsedd_create_symlink_to_pcidev(struct edd_device *edev) 6821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct pci_dev *pci_dev = edd_get_pci_dev(edev); 6851b28f22a87a5a2f0ab39f2549441bbe5eb2e369fAlan Cox int ret; 6861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!pci_dev) 6871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 1; 6881b28f22a87a5a2f0ab39f2549441bbe5eb2e369fAlan Cox ret = sysfs_create_link(&edev->kobj,&pci_dev->dev.kobj,"pci_dev"); 6891b28f22a87a5a2f0ab39f2549441bbe5eb2e369fAlan Cox pci_dev_put(pci_dev); 6901b28f22a87a5a2f0ab39f2549441bbe5eb2e369fAlan Cox return ret; 6911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void 6941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsedd_device_unregister(struct edd_device *edev) 6951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 696c10997f6575f476ff38442fa18fd4a0d80345f9dGreg Kroah-Hartman kobject_put(&edev->kobj); 6971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void edd_populate_dir(struct edd_device * edev) 7001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct edd_attribute * attr; 7021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int error = 0; 7031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 7041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; (attr = edd_attrs[i]) && !error; i++) { 7061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!attr->test || 7071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (attr->test && attr->test(edev))) 7081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = sysfs_create_file(&edev->kobj,&attr->attr); 7091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!error) { 7121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds edd_create_symlink_to_pcidev(edev); 7131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 7171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsedd_device_register(struct edd_device *edev, int i) 7181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int error; 7201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!edev) 7221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 1; 7231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds edd_dev_set_info(edev, i); 7249651d350ab2c1b9ef1875be2a9def1c375e6503fGreg Kroah-Hartman edev->kobj.kset = edd_kset; 725dd002e807486f9858147c073069a37ba625baad8Greg Kroah-Hartman error = kobject_init_and_add(&edev->kobj, &edd_ktype, NULL, 726dd002e807486f9858147c073069a37ba625baad8Greg Kroah-Hartman "int13_dev%02x", 0x80 + i); 727dd002e807486f9858147c073069a37ba625baad8Greg Kroah-Hartman if (!error) { 7281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds edd_populate_dir(edev); 729dd002e807486f9858147c073069a37ba625baad8Greg Kroah-Hartman kobject_uevent(&edev->kobj, KOBJ_ADD); 730dd002e807486f9858147c073069a37ba625baad8Greg Kroah-Hartman } 7311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return error; 7321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int edd_num_devices(void) 7351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return max_t(unsigned char, 7371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds min_t(unsigned char, EDD_MBR_SIG_MAX, edd.mbr_signature_nr), 7381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds min_t(unsigned char, EDDMAXNR, edd.edd_info_nr)); 7391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/** 7421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * edd_init() - creates sysfs tree of EDD data 7431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 7441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int __init 7451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsedd_init(void) 7461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7471986aaf828ac8398b3d8d9b4151b08c840414ffeAxel Lin int i; 7481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rc=0; 7491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct edd_device *edev; 7501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_INFO "BIOS EDD facility v%s %s, %d devices found\n", 7521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds EDD_VERSION, EDD_DATE, edd_num_devices()); 7531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!edd_num_devices()) { 7551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_INFO "EDD information not available.\n"); 756f6266e34713dc286b52623d8a4ff846973c0bcceAlexey Dobriyan return -ENODEV; 7571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 759f62ed9e33b3ccff54d66b08f82d11940bb9e269bGreg Kroah-Hartman edd_kset = kset_create_and_add("edd", NULL, firmware_kobj); 7609651d350ab2c1b9ef1875be2a9def1c375e6503fGreg Kroah-Hartman if (!edd_kset) 7619651d350ab2c1b9ef1875be2a9def1c375e6503fGreg Kroah-Hartman return -ENOMEM; 7621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7631986aaf828ac8398b3d8d9b4151b08c840414ffeAxel Lin for (i = 0; i < edd_num_devices(); i++) { 7649c2153844d72ac92b6da0ee42f7f81fb0aa91f8aDeepak Saxena edev = kzalloc(sizeof (*edev), GFP_KERNEL); 7651986aaf828ac8398b3d8d9b4151b08c840414ffeAxel Lin if (!edev) { 7661986aaf828ac8398b3d8d9b4151b08c840414ffeAxel Lin rc = -ENOMEM; 7671986aaf828ac8398b3d8d9b4151b08c840414ffeAxel Lin goto out; 7681986aaf828ac8398b3d8d9b4151b08c840414ffeAxel Lin } 7691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rc = edd_device_register(edev, i); 7711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (rc) { 7721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree(edev); 7731986aaf828ac8398b3d8d9b4151b08c840414ffeAxel Lin goto out; 7741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds edd_devices[i] = edev; 7761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7781986aaf828ac8398b3d8d9b4151b08c840414ffeAxel Lin return 0; 7791986aaf828ac8398b3d8d9b4151b08c840414ffeAxel Lin 7801986aaf828ac8398b3d8d9b4151b08c840414ffeAxel Linout: 7811986aaf828ac8398b3d8d9b4151b08c840414ffeAxel Lin while (--i >= 0) 7821986aaf828ac8398b3d8d9b4151b08c840414ffeAxel Lin edd_device_unregister(edd_devices[i]); 7831986aaf828ac8398b3d8d9b4151b08c840414ffeAxel Lin kset_unregister(edd_kset); 7841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return rc; 7851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void __exit 7881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsedd_exit(void) 7891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 7911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct edd_device *edev; 7921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < edd_num_devices(); i++) { 7941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((edev = edd_devices[i])) 7951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds edd_device_unregister(edev); 7961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7979651d350ab2c1b9ef1875be2a9def1c375e6503fGreg Kroah-Hartman kset_unregister(edd_kset); 7981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldslate_initcall(edd_init); 8011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_exit(edd_exit); 802