miscutils/hdparm.c

   1 /* vi: set sw=4 ts=4: */
   2 /*
   3  * hdparm implementation for busybox
   4  *
   5  * Copyright (C) [2003] by [Matteo Croce] <3297627799@wind.it>
   6  * Hacked by Tito <farmatito@tiscali.it> for size optimization.
   7  *
   8  * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
   9  *
  10  * This program is based on the source code of hdparm: see below...
  11  * hdparm.c - Command line interface to get/set hard disk parameters
  12  *          - by Mark Lord (C) 1994-2002 -- freely distributable
  13  */
  14
  15 #include <unistd.h>
  16 #include <string.h>
  17 #include <stdlib.h>
  18 #include <fcntl.h>
  19 #include <errno.h>
  20 #include <ctype.h>
  21 #include <endian.h>
  22 #include <sys/ioctl.h>
  23 #include <sys/shm.h>
  24 #include <sys/sysmacros.h>
  25 #include <sys/time.h>
  26 #include <sys/times.h>
  27 #include <sys/mount.h>
  28 #include <getopt.h>
  29 #include "busybox.h"
  30 #include <linux/types.h>
  31 #include <linux/hdreg.h>
  32 #include <asm/byteorder.h>
  33
  34
  35 #if BB_BIG_ENDIAN && !defined(__USE_XOPEN)
  36 # define __USE_XOPEN
  37 #endif
  38
  39 /* device types */
  40 /* ------------ */
  41 #define NO_DEV                  0xffff
  42 #define ATA_DEV                 0x0000
  43 #define ATAPI_DEV               0x0001
  44
  45 /* word definitions */
  46 /* ---------------- */
  47 #define GEN_CONFIG              0   /* general configuration */
  48 #define LCYLS                   1   /* number of logical cylinders */
  49 #define CONFIG                  2   /* specific configuration */
  50 #define LHEADS                  3   /* number of logical heads */
  51 #define TRACK_BYTES             4   /* number of bytes/track (ATA-1) */
  52 #define SECT_BYTES              5   /* number of bytes/sector (ATA-1) */
  53 #define LSECTS                  6   /* number of logical sectors/track */
  54 #define START_SERIAL            10  /* ASCII serial number */
  55 #define LENGTH_SERIAL           10  /* 10 words (20 bytes or characters) */
  56 #define BUF_TYPE                20  /* buffer type (ATA-1) */
  57 #define BUFFER__SIZE            21  /* buffer size (ATA-1) */
  58 #define RW_LONG                 22  /* extra bytes in R/W LONG cmd ( < ATA-4)*/
  59 #define START_FW_REV            23  /* ASCII firmware revision */
  60 #define LENGTH_FW_REV            4  /*  4 words (8 bytes or characters) */
  61 #define START_MODEL             27  /* ASCII model number */
  62 #define LENGTH_MODEL            20  /* 20 words (40 bytes or characters) */
  63 #define SECTOR_XFER_MAX         47  /* r/w multiple: max sectors xfered */
  64 #define DWORD_IO                48  /* can do double-word IO (ATA-1 only) */
  65 #define CAPAB_0                 49  /* capabilities */
  66 #define CAPAB_1                 50
  67 #define PIO_MODE                51  /* max PIO mode supported (obsolete)*/
  68 #define DMA_MODE                52  /* max Singleword DMA mode supported (obs)*/
  69 #define WHATS_VALID             53  /* what fields are valid */
  70 #define LCYLS_CUR               54  /* current logical cylinders */
  71 #define LHEADS_CUR              55  /* current logical heads */
  72 #define LSECTS_CUR              56  /* current logical sectors/track */
  73 #define CAPACITY_LSB            57  /* current capacity in sectors */
  74 #define CAPACITY_MSB            58
  75 #define SECTOR_XFER_CUR         59  /* r/w multiple: current sectors xfered */
  76 #define LBA_SECTS_LSB           60  /* LBA: total number of user */
  77 #define LBA_SECTS_MSB           61  /*      addressable sectors */
  78 #define SINGLE_DMA              62  /* singleword DMA modes */
  79 #define MULTI_DMA               63  /* multiword DMA modes */
  80 #define ADV_PIO_MODES           64  /* advanced PIO modes supported */
  81                                     /* multiword DMA xfer cycle time: */
  82 #define DMA_TIME_MIN            65  /*   - minimum */
  83 #define DMA_TIME_NORM           66  /*   - manufacturer's recommended   */
  84                                     /* minimum PIO xfer cycle time: */
  85 #define PIO_NO_FLOW             67  /*   - without flow control */
  86 #define PIO_FLOW                68  /*   - with IORDY flow control */
  87 #define PKT_REL                 71  /* typical #ns from PKT cmd to bus rel */
  88 #define SVC_NBSY                72  /* typical #ns from SERVICE cmd to !BSY */
  89 #define CDR_MAJOR               73  /* CD ROM: major version number */
  90 #define CDR_MINOR               74  /* CD ROM: minor version number */
  91 #define QUEUE_DEPTH             75  /* queue depth */
  92 #define MAJOR                   80  /* major version number */
  93 #define MINOR                   81  /* minor version number */
  94 #define CMDS_SUPP_0             82  /* command/feature set(s) supported */
  95 #define CMDS_SUPP_1             83
  96 #define CMDS_SUPP_2             84
  97 #define CMDS_EN_0               85  /* command/feature set(s) enabled */
  98 #define CMDS_EN_1               86
  99 #define CMDS_EN_2               87
 100 #define ULTRA_DMA               88  /* ultra DMA modes */
 101                                     /* time to complete security erase */
 102 #define ERASE_TIME              89  /*   - ordinary */
 103 #define ENH_ERASE_TIME          90  /*   - enhanced */
 104 #define ADV_PWR                 91  /* current advanced power management level
 105                                        in low byte, 0x40 in high byte. */
 106 #define PSWD_CODE               92  /* master password revision code    */
 107 #define HWRST_RSLT              93  /* hardware reset result */
 108 #define ACOUSTIC                94  /* acoustic mgmt values ( >= ATA-6) */
 109 #define LBA_LSB                 100 /* LBA: maximum.  Currently only 48 */
 110 #define LBA_MID                 101 /*      bits are used, but addr 103 */
 111 #define LBA_48_MSB              102 /*      has been reserved for LBA in */
 112 #define LBA_64_MSB              103 /*      the future. */
 113 #define RM_STAT                 127 /* removable media status notification feature set support */
 114 #define SECU_STATUS             128 /* security status */
 115 #define CFA_PWR_MODE            160 /* CFA power mode 1 */
 116 #define START_MEDIA             176 /* media serial number */
 117 #define LENGTH_MEDIA            20  /* 20 words (40 bytes or characters)*/
 118 #define START_MANUF             196 /* media manufacturer I.D. */
 119 #define LENGTH_MANUF            10  /* 10 words (20 bytes or characters) */
 120 #define INTEGRITY               255 /* integrity word */
 121
 122 /* bit definitions within the words */
 123 /* -------------------------------- */
 124
 125 /* many words are considered valid if bit 15 is 0 and bit 14 is 1 */
 126 #define VALID                   0xc000
 127 #define VALID_VAL               0x4000
 128 /* many words are considered invalid if they are either all-0 or all-1 */
 129 #define NOVAL_0                 0x0000
 130 #define NOVAL_1                 0xffff
 131
 132 /* word 0: gen_config */
 133 #define NOT_ATA                 0x8000
 134 #define NOT_ATAPI               0x4000  /* (check only if bit 15 == 1) */
 135 #define MEDIA_REMOVABLE         0x0080
 136 #define DRIVE_NOT_REMOVABLE     0x0040  /* bit obsoleted in ATA 6 */
 137 #define INCOMPLETE              0x0004
 138 #define CFA_SUPPORT_VAL         0x848a  /* 848a=CFA feature set support */
 139 #define DRQ_RESPONSE_TIME       0x0060
 140 #define DRQ_3MS_VAL             0x0000
 141 #define DRQ_INTR_VAL            0x0020
 142 #define DRQ_50US_VAL            0x0040
 143 #define PKT_SIZE_SUPPORTED      0x0003
 144 #define PKT_SIZE_12_VAL         0x0000
 145 #define PKT_SIZE_16_VAL         0x0001
 146 #define EQPT_TYPE               0x1f00
 147 #define SHIFT_EQPT              8
 148
 149 #define CDROM 0x0005
 150
 151 #ifdef CONFIG_FEATURE_HDPARM_GET_IDENTITY
 152 static const char * const pkt_str[] = {
 153         "Direct-access device",                 /* word 0, bits 12-8 = 00 */
 154         "Sequential-access device",             /* word 0, bits 12-8 = 01 */
 155         "Printer",                              /* word 0, bits 12-8 = 02 */
 156         "Processor",                            /* word 0, bits 12-8 = 03 */
 157         "Write-once device",                    /* word 0, bits 12-8 = 04 */
 158         "CD-ROM",                               /* word 0, bits 12-8 = 05 */
 159         "Scanner",                              /* word 0, bits 12-8 = 06 */
 160         "Optical memory",                       /* word 0, bits 12-8 = 07 */
 161         "Medium changer",                       /* word 0, bits 12-8 = 08 */
 162         "Communications device",                /* word 0, bits 12-8 = 09 */
 163         "ACS-IT8 device",                       /* word 0, bits 12-8 = 0a */
 164         "ACS-IT8 device",                       /* word 0, bits 12-8 = 0b */
 165         "Array controller",                     /* word 0, bits 12-8 = 0c */
 166         "Enclosure services",                   /* word 0, bits 12-8 = 0d */
 167         "Reduced block command device",         /* word 0, bits 12-8 = 0e */
 168         "Optical card reader/writer",           /* word 0, bits 12-8 = 0f */
 169         "",                                     /* word 0, bits 12-8 = 10 */
 170         "",                                     /* word 0, bits 12-8 = 11 */
 171         "",                                     /* word 0, bits 12-8 = 12 */
 172         "",                                     /* word 0, bits 12-8 = 13 */
 173         "",                                     /* word 0, bits 12-8 = 14 */
 174         "",                                     /* word 0, bits 12-8 = 15 */
 175         "",                                     /* word 0, bits 12-8 = 16 */
 176         "",                                     /* word 0, bits 12-8 = 17 */
 177         "",                                     /* word 0, bits 12-8 = 18 */
 178         "",                                     /* word 0, bits 12-8 = 19 */
 179         "",                                     /* word 0, bits 12-8 = 1a */
 180         "",                                     /* word 0, bits 12-8 = 1b */
 181         "",                                     /* word 0, bits 12-8 = 1c */
 182         "",                                     /* word 0, bits 12-8 = 1d */
 183         "",                                     /* word 0, bits 12-8 = 1e */
 184         "Unknown",                      /* word 0, bits 12-8 = 1f */
 185 };
 186
 187 static const char * const ata1_cfg_str[] = {                    /* word 0 in ATA-1 mode */
 188         "Reserved",                             /* bit 0 */
 189         "hard sectored",                        /* bit 1 */
 190         "soft sectored",                        /* bit 2 */
 191         "not MFM encoded ",                     /* bit 3 */
 192         "head switch time > 15us",              /* bit 4 */
 193         "spindle motor control option",         /* bit 5 */
 194         "fixed drive",                          /* bit 6 */
 195         "removable drive",                      /* bit 7 */
 196         "disk xfer rate <= 5Mbs",               /* bit 8 */
 197         "disk xfer rate > 5Mbs, <= 10Mbs",      /* bit 9 */
 198         "disk xfer rate > 5Mbs",                /* bit 10 */
 199         "rotational speed tol.",                /* bit 11 */
 200         "data strobe offset option",            /* bit 12 */
 201         "track offset option",                  /* bit 13 */
 202         "format speed tolerance gap reqd",      /* bit 14 */
 203         "ATAPI"                                 /* bit 14 */
 204 };
 205 #endif
 206
 207 /* word 1: number of logical cylinders */
 208 #define LCYLS_MAX               0x3fff /* maximum allowable value */
 209
 210 /* word 2: specific configuration
 211  * (a) require SET FEATURES to spin-up
 212  * (b) require spin-up to fully reply to IDENTIFY DEVICE
 213  */
 214 #define STBY_NID_VAL            0x37c8  /*     (a) and     (b) */
 215 #define STBY_ID_VAL             0x738c  /*     (a) and not (b) */
 216 #define PWRD_NID_VAL            0x8c73  /* not (a) and     (b) */
 217 #define PWRD_ID_VAL             0xc837  /* not (a) and not (b) */
 218
 219 /* words 47 & 59: sector_xfer_max & sector_xfer_cur */
 220 #define SECTOR_XFER             0x00ff  /* sectors xfered on r/w multiple cmds*/
 221 #define MULTIPLE_SETTING_VALID  0x0100  /* 1=multiple sector setting is valid */
 222
 223 /* word 49: capabilities 0 */
 224 #define STD_STBY                0x2000  /* 1=standard values supported (ATA);
 225                                            0=vendor specific values */
 226 #define IORDY_SUP               0x0800  /* 1=support; 0=may be supported */
 227 #define IORDY_OFF               0x0400  /* 1=may be disabled */
 228 #define LBA_SUP                 0x0200  /* 1=Logical Block Address support */
 229 #define DMA_SUP                 0x0100  /* 1=Direct Memory Access support */
 230 #define DMA_IL_SUP              0x8000  /* 1=interleaved DMA support (ATAPI) */
 231 #define CMD_Q_SUP               0x4000  /* 1=command queuing support (ATAPI) */
 232 #define OVLP_SUP                0x2000  /* 1=overlap operation support (ATAPI) */
 233 #define SWRST_REQ               0x1000  /* 1=ATA SW reset required (ATAPI, obsolete */
 234
 235 /* word 50: capabilities 1 */
 236 #define MIN_STANDBY_TIMER       0x0001  /* 1=device specific standby timer value minimum */
 237
 238 /* words 51 & 52: PIO & DMA cycle times */
 239 #define MODE                    0xff00  /* the mode is in the MSBs */
 240
 241 /* word 53: whats_valid */
 242 #define OK_W88                  0x0004  /* the ultra_dma info is valid */
 243 #define OK_W64_70               0x0002  /* see above for word descriptions */
 244 #define OK_W54_58               0x0001  /* current cyl, head, sector, cap. info valid */
 245
 246 /*word 63,88: dma_mode, ultra_dma_mode*/
 247 #define MODE_MAX                7       /* bit definitions force udma <=7 (when
 248                                          * udma >=8 comes out it'll have to be
 249                                          * defined in a new dma_mode word!) */
 250
 251 /* word 64: PIO transfer modes */
 252 #define PIO_SUP                 0x00ff  /* only bits 0 & 1 are used so far,  */
 253 #define PIO_MODE_MAX            8       /* but all 8 bits are defined        */
 254
 255 /* word 75: queue_depth */
 256 #define DEPTH_BITS              0x001f  /* bits used for queue depth */
 257
 258 /* words 80-81: version numbers */
 259 /* NOVAL_0 or  NOVAL_1 means device does not report version */
 260
 261 /* word 81: minor version number */
 262 #define MINOR_MAX               0x22
 263 #ifdef CONFIG_FEATURE_HDPARM_GET_IDENTITY
 264 static const char *minor_str[MINOR_MAX+2] = {                   /* word 81 value: */
 265         "Unspecified",                                  /* 0x0000       */
 266         "ATA-1 X3T9.2 781D prior to rev.4",     /* 0x0001       */
 267         "ATA-1 published, ANSI X3.221-1994",            /* 0x0002       */
 268         "ATA-1 X3T9.2 781D rev.4",                      /* 0x0003       */
 269         "ATA-2 published, ANSI X3.279-1996",            /* 0x0004       */
 270         "ATA-2 X3T10 948D prior to rev.2k",     /* 0x0005       */
 271         "ATA-3 X3T10 2008D rev.1",                      /* 0x0006       */
 272         "ATA-2 X3T10 948D rev.2k",                      /* 0x0007       */
 273         "ATA-3 X3T10 2008D rev.0",                      /* 0x0008       */
 274         "ATA-2 X3T10 948D rev.3",                       /* 0x0009       */
 275         "ATA-3 published, ANSI X3.298-199x",            /* 0x000a       */
 276         "ATA-3 X3T10 2008D rev.6",                      /* 0x000b       */
 277         "ATA-3 X3T13 2008D rev.7 and 7a",               /* 0x000c       */
 278         "ATA/ATAPI-4 X3T13 1153D rev.6",                /* 0x000d       */
 279         "ATA/ATAPI-4 T13 1153D rev.13",         /* 0x000e       */
 280         "ATA/ATAPI-4 X3T13 1153D rev.7",                /* 0x000f       */
 281         "ATA/ATAPI-4 T13 1153D rev.18",         /* 0x0010       */
 282         "ATA/ATAPI-4 T13 1153D rev.15",         /* 0x0011       */
 283         "ATA/ATAPI-4 published, ANSI INCITS 317-1998",  /* 0x0012       */
 284         "ATA/ATAPI-5 T13 1321D rev.3",
 285         "ATA/ATAPI-4 T13 1153D rev.14",         /* 0x0014       */
 286         "ATA/ATAPI-5 T13 1321D rev.1",          /* 0x0015       */
 287         "ATA/ATAPI-5 published, ANSI INCITS 340-2000",  /* 0x0016       */
 288         "ATA/ATAPI-4 T13 1153D rev.17",         /* 0x0017       */
 289         "ATA/ATAPI-6 T13 1410D rev.0",          /* 0x0018       */
 290         "ATA/ATAPI-6 T13 1410D rev.3a",         /* 0x0019       */
 291         "ATA/ATAPI-7 T13 1532D rev.1",          /* 0x001a       */
 292         "ATA/ATAPI-6 T13 1410D rev.2",          /* 0x001b       */
 293         "ATA/ATAPI-6 T13 1410D rev.1",          /* 0x001c       */
 294         "ATA/ATAPI-7 published, ANSI INCITS 397-2005",  /* 0x001d       */
 295         "ATA/ATAPI-7 T13 1532D rev.0",          /* 0x001e       */
 296         "Reserved"                                      /* 0x001f       */
 297         "Reserved"                                      /* 0x0020       */
 298         "ATA/ATAPI-7 T13 1532D rev.4a",         /* 0x0021       */
 299         "ATA/ATAPI-6 published, ANSI INCITS 361-2002",  /* 0x0022       */
 300         "Reserved"                                      /* 0x0023-0xfffe*/
 301 };
 302 #endif
 303 static const char actual_ver[MINOR_MAX+2] = {
 304                         /* word 81 value: */
 305         0,              /* 0x0000       WARNING:        */
 306         1,              /* 0x0001       WARNING:        */
 307         1,              /* 0x0002       WARNING:        */
 308         1,              /* 0x0003       WARNING:        */
 309         2,              /* 0x0004       WARNING:   This array           */
 310         2,              /* 0x0005       WARNING:   corresponds          */
 311         3,              /* 0x0006       WARNING:   *exactly*            */
 312         2,              /* 0x0007       WARNING:   to the ATA/          */
 313         3,              /* 0x0008       WARNING:   ATAPI version        */
 314         2,              /* 0x0009       WARNING:   listed in            */
 315         3,              /* 0x000a       WARNING:   the                  */
 316         3,              /* 0x000b       WARNING:   minor_str            */
 317         3,              /* 0x000c       WARNING:   array                */
 318         4,              /* 0x000d       WARNING:   above.               */
 319         4,              /* 0x000e       WARNING:                        */
 320         4,              /* 0x000f       WARNING:   if you change        */
 321         4,              /* 0x0010       WARNING:   that one,            */
 322         4,              /* 0x0011       WARNING:   change this one      */
 323         4,              /* 0x0012       WARNING:   too!!!               */
 324         5,              /* 0x0013       WARNING:        */
 325         4,              /* 0x0014       WARNING:        */
 326         5,              /* 0x0015       WARNING:        */
 327         5,              /* 0x0016       WARNING:        */
 328         4,              /* 0x0017       WARNING:        */
 329         6,              /* 0x0018       WARNING:        */
 330         6,              /* 0x0019       WARNING:        */
 331         7,              /* 0x001a       WARNING:        */
 332         6,              /* 0x001b       WARNING:        */
 333         6,              /* 0x001c       WARNING:        */
 334         7,              /* 0x001d       WARNING:        */
 335         7,              /* 0x001e       WARNING:        */
 336         0,              /* 0x001f       WARNING:        */
 337         0,              /* 0x0020       WARNING:        */
 338         7,              /* 0x0021       WARNING:        */
 339         6,              /* 0x0022       WARNING:        */
 340         0               /* 0x0023-0xfffe        */
 341 };
 342
 343 /* words 82-84: cmds/feats supported */
 344 #define CMDS_W82                0x77ff  /* word 82: defined command locations*/
 345 #define CMDS_W83                0x3fff  /* word 83: defined command locations*/
 346 #define CMDS_W84                0x002f  /* word 83: defined command locations*/
 347 #define SUPPORT_48_BIT          0x0400
 348 #define NUM_CMD_FEAT_STR        48
 349
 350 #ifdef CONFIG_FEATURE_HDPARM_GET_IDENTITY
 351 static const char * const cmd_feat_str[] = {
 352         "",                                     /* word 82 bit 15: obsolete  */
 353         "NOP cmd",                              /* word 82 bit 14 */
 354         "READ BUFFER cmd",                      /* word 82 bit 13 */
 355         "WRITE BUFFER cmd",                     /* word 82 bit 12 */
 356         "",                                     /* word 82 bit 11: obsolete  */
 357         "Host Protected Area feature set",      /* word 82 bit 10 */
 358         "DEVICE RESET cmd",                     /* word 82 bit  9 */
 359         "SERVICE interrupt",                    /* word 82 bit  8 */
 360         "Release interrupt",                    /* word 82 bit  7 */
 361         "Look-ahead",                           /* word 82 bit  6 */
 362         "Write cache",                          /* word 82 bit  5 */
 363         "PACKET command feature set",           /* word 82 bit  4 */
 364         "Power Management feature set",         /* word 82 bit  3 */
 365         "Removable Media feature set",          /* word 82 bit  2 */
 366         "Security Mode feature set",            /* word 82 bit  1 */
 367         "SMART feature set",                    /* word 82 bit  0 */
 368                                                 /* --------------*/
 369         "",                                     /* word 83 bit 15: !valid bit */
 370         "",                                     /* word 83 bit 14:  valid bit */
 371         "FLUSH CACHE EXT cmd",          /* word 83 bit 13 */
 372         "Mandatory FLUSH CACHE cmd ",   /* word 83 bit 12 */
 373         "Device Configuration Overlay feature set ",
 374         "48-bit Address feature set ",          /* word 83 bit 10 */
 375         "",
 376         "SET MAX security extension",           /* word 83 bit  8 */
 377         "Address Offset Reserved Area Boot",    /* word 83 bit  7 */
 378         "SET FEATURES subcommand required to spinup after power up",
 379         "Power-Up In Standby feature set",      /* word 83 bit  5 */
 380         "Removable Media Status Notification feature set",
 381         "Adv. Power Management feature set",/* word 83 bit  3 */
 382         "CFA feature set",                      /* word 83 bit  2 */
 383         "READ/WRITE DMA QUEUED",                /* word 83 bit  1 */
 384         "DOWNLOAD MICROCODE cmd",               /* word 83 bit  0 */
 385                                                 /* --------------*/
 386         "",                                     /* word 84 bit 15: !valid bit */
 387         "",                                     /* word 84 bit 14:  valid bit */
 388         "",                                     /* word 84 bit 13:  reserved */
 389         "",                                     /* word 84 bit 12:  reserved */
 390         "",                                     /* word 84 bit 11:  reserved */
 391         "",                                     /* word 84 bit 10:  reserved */
 392         "",                                     /* word 84 bit  9:  reserved */
 393         "",                                     /* word 84 bit  8:  reserved */
 394         "",                                     /* word 84 bit  7:  reserved */
 395         "",                                     /* word 84 bit  6:  reserved */
 396         "General Purpose Logging feature set",  /* word 84 bit  5 */
 397         "",                                     /* word 84 bit  4:  reserved */
 398         "Media Card Pass Through Command feature set ",
 399         "Media serial number ",                 /* word 84 bit  2 */
 400         "SMART self-test ",                     /* word 84 bit  1 */
 401         "SMART error logging "                  /* word 84 bit  0 */
 402 };
 403
 404 static void identify(uint16_t *id_supplied) ATTRIBUTE_NORETURN;
 405 static void identify_from_stdin(void) ATTRIBUTE_NORETURN;
 406
 407 #endif
 408
 409
 410 /* words 85-87: cmds/feats enabled */
 411 /* use cmd_feat_str[] to display what commands and features have
 412  * been enabled with words 85-87
 413  */
 414
 415 /* words 89, 90, SECU ERASE TIME */
 416 #define ERASE_BITS              0x00ff
 417
 418 /* word 92: master password revision */
 419 /* NOVAL_0 or  NOVAL_1 means no support for master password revision */
 420
 421 /* word 93: hw reset result */
 422 #define CBLID                   0x2000  /* CBLID status */
 423 #define RST0                    0x0001  /* 1=reset to device #0 */
 424 #define DEV_DET                 0x0006  /* how device num determined */
 425 #define JUMPER_VAL              0x0002  /* device num determined by jumper */
 426 #define CSEL_VAL                0x0004  /* device num determined by CSEL_VAL */
 427
 428 /* word 127: removable media status notification feature set support */
 429 #define RM_STAT_BITS            0x0003
 430 #define RM_STAT_SUP             0x0001
 431
 432 /* word 128: security */
 433 #define SECU_ENABLED    0x0002
 434 #define SECU_LEVEL              0x0010
 435 #define NUM_SECU_STR    6
 436 #ifdef CONFIG_FEATURE_HDPARM_GET_IDENTITY
 437 static const char * const secu_str[] = {
 438         "supported",                    /* word 128, bit 0 */
 439         "enabled",                      /* word 128, bit 1 */
 440         "locked",                       /* word 128, bit 2 */
 441         "frozen",                       /* word 128, bit 3 */
 442         "expired: security count",      /* word 128, bit 4 */
 443         "supported: enhanced erase"     /* word 128, bit 5 */
 444 };
 445 #endif
 446
 447 /* word 160: CFA power mode */
 448 #define VALID_W160              0x8000  /* 1=word valid */
 449 #define PWR_MODE_REQ            0x2000  /* 1=CFA power mode req'd by some cmds*/
 450 #define PWR_MODE_OFF            0x1000  /* 1=CFA power moded disabled */
 451 #define MAX_AMPS                0x0fff  /* value = max current in ma */
 452
 453 /* word 255: integrity */
 454 #define SIG                     0x00ff  /* signature location */
 455 #define SIG_VAL                 0x00A5  /* signature value */
 456
 457 #define VERSION "v5.4"
 458
 459 #define TIMING_MB               64
 460 #define TIMING_BUF_MB           1
 461 #define TIMING_BUF_BYTES        (TIMING_BUF_MB * 1024 * 1024)
 462 #define TIMING_BUF_COUNT        (timing_MB / TIMING_BUF_MB)
 463 #define BUFCACHE_FACTOR         2
 464
 465 #undef DO_FLUSHCACHE            /* under construction: force cache flush on -W0 */
 466
 467 /* Busybox messages and functions */
 468 static int bb_ioctl(int fd, int request, void *argp, const char *string)
 469 {
 470         int e = ioctl(fd, request, argp);
 471         if (e && string)
 472                 bb_perror_msg(" %s", string);
 473         return e;
 474 }
 475
 476 static int bb_ioctl_alt(int fd, int cmd, unsigned char *args, int alt, const char *string)
 477 {
 478         if (!ioctl(fd, cmd, args))
 479                 return 0;
 480         args[0] = alt;
 481         return bb_ioctl(fd, cmd, args, string);
 482 }
 483
 484 static void on_off(unsigned int value);
 485
 486 static void print_flag_on_off(unsigned long get_arg, const char *s, unsigned long arg)
 487 {
 488
 489         if (get_arg)
 490         {
 491                 printf(" setting %s to %ld", s, arg);
 492                 on_off(arg);
 493         }
 494 }
 495
 496 static void bb_ioctl_on_off(int fd, int request, void *argp, const char *string,
 497                                                          const char * str)
 498 {
 499         if (ioctl(fd, request, &argp) != 0)
 500                 bb_perror_msg(" %s", string);
 501         else
 502         {
 503                 printf(" %s\t= %2ld", str, (unsigned long) argp);
 504                 on_off((unsigned long) argp);
 505         }
 506 }
 507
 508 #ifdef CONFIG_FEATURE_HDPARM_GET_IDENTITY
 509 static void print_ascii(uint16_t *p, uint8_t length);
 510
 511 static void xprint_ascii(uint16_t *val ,int i, char * string, int n)
 512 {
 513         if (val[i])
 514         {
 515                 printf("\t%-20s",string);
 516                 print_ascii(&val[i], n);
 517         }
 518 }
 519
 520 static void if_strcat(unsigned long test, char *modes, char *string)
 521 {
 522         if (test)
 523                 strcat(modes,string);
 524 }
 525 #endif
 526 /* end of  busybox specific stuff */
 527
 528 #ifdef CONFIG_FEATURE_HDPARM_GET_IDENTITY
 529 static uint8_t mode_loop(uint16_t mode_sup, uint16_t mode_sel, int cc, uint8_t *have_mode)
 530 {
 531         uint16_t ii;
 532         uint8_t err_dma = 0;
 533
 534         for (ii = 0; ii <= MODE_MAX; ii++)
 535         {
 536                 if (mode_sel & 0x0001)
 537                 {
 538                         printf("*%cdma%u ",cc,ii);
 539                         if (*have_mode)
 540                                 err_dma = 1;
 541                         *have_mode = 1;
 542                 }
 543                 else if (mode_sup & 0x0001)
 544                         printf("%cdma%u ",cc,ii);
 545
 546                 mode_sup >>=1;
 547                 mode_sel >>=1;
 548         }
 549         return err_dma;
 550 }
 551
 552 static void print_ascii(uint16_t *p, uint8_t length) {
 553         uint8_t ii;
 554         char cl;
 555
 556         /* find first non-space & print it */
 557         for (ii = 0; ii< length; ii++)
 558         {
 559                 if (((char) 0x00ff&((*p)>>8)) != ' ')
 560                         break;
 561                 if ((cl = (char) 0x00ff&(*p)) != ' ')
 562                 {
 563                         if (cl != '\0') printf("%c",cl);
 564                         p++;
 565                         ii++;
 566                         break;
 567                 }
 568                 p++;
 569         }
 570         /* print the rest */
 571         for (; ii< length; ii++)
 572         {
 573                 if (!(*p))
 574                         break; /* some older devices have NULLs */
 575                 printf("%c%c",(char)0x00ff&((*p)>>8),(char)(*p)&0x00ff);
 576                 p++;
 577         }
 578         printf("\n");
 579 }
 580
 581 /* identify() is the only extern function used across two source files.  The
 582    others, though, were declared in hdparm.c with global scope; since other
 583    functions in that file have static (file) scope, I assume the difference is
 584    intentional. */
 585 static void identify(uint16_t *id_supplied)
 586 {
 587         uint16_t buf[256];
 588         uint16_t *val, ii, jj, kk;
 589         uint16_t like_std = 1, std = 0, min_std = 0xffff;
 590         uint16_t dev = NO_DEV, eqpt = NO_DEV;
 591         uint8_t  have_mode = 0, err_dma = 0;
 592         uint8_t  chksum = 0;
 593         uint32_t ll, mm, nn, oo;
 594         uint64_t bbbig; /* (:) */
 595         const char *strng;
 596
 597         if (BB_BIG_ENDIAN) {
 598                 swab(id_supplied, buf, sizeof(buf));
 599                 val = buf;
 600         } else val = id_supplied;
 601
 602         chksum &= 0xff;
 603
 604         /* check if we recognise the device type */
 605         printf("\n");
 606         if(!(val[GEN_CONFIG] & NOT_ATA))
 607         {
 608                 dev = ATA_DEV;
 609                 printf("ATA device, with ");
 610         }
 611         else if(val[GEN_CONFIG]==CFA_SUPPORT_VAL)
 612         {
 613                 dev = ATA_DEV;
 614                 like_std = 4;
 615                 printf("CompactFlash ATA device, with ");
 616         }
 617         else if(!(val[GEN_CONFIG] & NOT_ATAPI))
 618         {
 619                 dev = ATAPI_DEV;
 620                 eqpt = (val[GEN_CONFIG] & EQPT_TYPE) >> SHIFT_EQPT;
 621                 printf("ATAPI %s, with ", pkt_str[eqpt]);
 622                 like_std = 3;
 623         }
 624         else
 625                 /*"Unknown device type:\n\tbits 15&14 of general configuration word 0 both set to 1.\n"*/
 626                 bb_error_msg_and_die("Unknown device type");
 627
 628         printf("%sremovable media\n", !(val[GEN_CONFIG] & MEDIA_REMOVABLE) ? "non-" : "");
 629         /* Info from the specific configuration word says whether or not the
 630          * ID command completed correctly.  It is only defined, however in
 631          * ATA/ATAPI-5 & 6; it is reserved (value theoretically 0) in prior
 632          * standards.  Since the values allowed for this word are extremely
 633          * specific, it should be safe to check it now, even though we don't
 634          * know yet what standard this device is using.
 635          */
 636         if ((val[CONFIG]==STBY_NID_VAL) || (val[CONFIG]==STBY_ID_VAL) ||
 637            (val[CONFIG]==PWRD_NID_VAL) || (val[CONFIG]==PWRD_ID_VAL) )
 638         {
 639                 like_std = 5;
 640                 if((val[CONFIG]==STBY_NID_VAL) || (val[CONFIG]==STBY_ID_VAL))
 641                         printf("powers-up in standby; SET FEATURES subcmd spins-up.\n");
 642                 if(((val[CONFIG]==STBY_NID_VAL) || (val[CONFIG]==PWRD_NID_VAL)) && (val[GEN_CONFIG] & INCOMPLETE))
 643                         printf("\n\tWARNING: ID response incomplete.\n\tFollowing data may be incorrect.\n\n");
 644         }
 645
 646         /* output the model and serial numbers and the fw revision */
 647         xprint_ascii(val, START_MODEL,  "Model Number:",        LENGTH_MODEL);
 648         xprint_ascii(val, START_SERIAL, "Serial Number:",       LENGTH_SERIAL);
 649         xprint_ascii(val, START_FW_REV, "Firmware Revision:",   LENGTH_FW_REV);
 650         xprint_ascii(val, START_MEDIA,  "Media Serial Num:",    LENGTH_MEDIA);
 651         xprint_ascii(val, START_MANUF,  "Media Manufacturer:",  LENGTH_MANUF);
 652
 653         /* major & minor standards version number (Note: these words were not
 654          * defined until ATA-3 & the CDROM std uses different words.) */
 655         printf("Standards:");
 656         if (eqpt != CDROM)
 657         {
 658                 if (val[MINOR] && (val[MINOR] <= MINOR_MAX))
 659                 {
 660                         if(like_std < 3) like_std = 3;
 661                         std = actual_ver[val[MINOR]];
 662                         if(std) printf("\n\tUsed: %s ",minor_str[val[MINOR]]);
 663
 664                 }
 665                 /* looks like when they up-issue the std, they obsolete one;
 666                  * thus, only the newest 4 issues need be supported. (That's
 667                  * what "kk" and "min_std" are all about.) */
 668                 if (val[MAJOR] && (val[MAJOR] !=NOVAL_1))
 669                 {
 670                         printf("\n\tSupported: ");
 671                         jj = val[MAJOR] << 1;
 672                         kk = like_std >4 ? like_std-4: 0;
 673                         for (ii = 14; (ii >0)&&(ii>kk); ii--)
 674                         {
 675                                 if (jj & 0x8000)
 676                                 {
 677                                         printf("%u ", ii);
 678                                         if (like_std < ii)
 679                                         {
 680                                                 like_std = ii;
 681                                                 kk = like_std >4 ? like_std-4: 0;
 682                                         }
 683                                         if(min_std > ii) min_std = ii;
 684                                 }
 685                                 jj <<= 1;
 686                         }
 687                         if(like_std < 3) like_std = 3;
 688                 }
 689                 /* Figure out what standard the device is using if it hasn't told
 690                  * us.  If we know the std, check if the device is using any of
 691                  * the words from the next level up.  It happens.
 692                  */
 693                 if(like_std < std) like_std = std;
 694
 695                 if (((std == 5) || (!std && (like_std < 6))) &&
 696                         ((((val[CMDS_SUPP_1] & VALID) == VALID_VAL) &&
 697                         ((      val[CMDS_SUPP_1] & CMDS_W83) > 0x00ff)) ||
 698                         (((     val[CMDS_SUPP_2] & VALID) == VALID_VAL) &&
 699                         (       val[CMDS_SUPP_2] & CMDS_W84) ) ) )
 700                 {
 701                         like_std = 6;
 702                 }
 703                 else if (((std == 4) || (!std && (like_std < 5))) &&
 704                         ((((val[INTEGRITY]      & SIG) == SIG_VAL) && !chksum) ||
 705                         ((      val[HWRST_RSLT] & VALID) == VALID_VAL) ||
 706                         (((     val[CMDS_SUPP_1] & VALID) == VALID_VAL) &&
 707                         ((      val[CMDS_SUPP_1] & CMDS_W83) > 0x001f)) ) )
 708                 {
 709                         like_std = 5;
 710                 }
 711                 else if (((std == 3) || (!std && (like_std < 4))) &&
 712                                 ((((val[CMDS_SUPP_1] & VALID) == VALID_VAL) &&
 713                                 (((     val[CMDS_SUPP_1] & CMDS_W83) > 0x0000) ||
 714                                 ((      val[CMDS_SUPP_0] & CMDS_W82) > 0x000f))) ||
 715                                 ((      val[CAPAB_1] & VALID) == VALID_VAL) ||
 716                                 ((      val[WHATS_VALID] & OK_W88) && val[ULTRA_DMA]) ||
 717                                 ((      val[RM_STAT] & RM_STAT_BITS) == RM_STAT_SUP) ) )
 718                 {
 719                         like_std = 4;
 720                 }
 721                 else if (((std == 2) || (!std && (like_std < 3))) &&
 722                            ((val[CMDS_SUPP_1] & VALID) == VALID_VAL) )
 723                 {
 724                         like_std = 3;
 725                 }
 726                 else if (((std == 1) || (!std && (like_std < 2))) &&
 727                                 ((val[CAPAB_0] & (IORDY_SUP | IORDY_OFF)) ||
 728                                 (val[WHATS_VALID] & OK_W64_70)) )
 729                 {
 730                         like_std = 2;
 731                 }
 732                 if (!std)
 733                         printf("\n\tLikely used: %u\n",like_std);
 734                 else if (like_std > std)
 735                         printf("& some of %u\n",like_std);
 736                 else
 737                         printf("\n");
 738         }
 739         else
 740         {
 741                 /* TBD: do CDROM stuff more thoroughly.  For now... */
 742                 kk = 0;
 743                 if (val[CDR_MINOR] == 9)
 744                 {
 745                         kk = 1;
 746                         printf("\n\tUsed: ATAPI for CD-ROMs, SFF-8020i, r2.5");
 747                 }
 748                 if (val[CDR_MAJOR] && (val[CDR_MAJOR] !=NOVAL_1))
 749                 {
 750                         kk = 1;
 751                         printf("\n\tSupported: CD-ROM ATAPI");
 752                         jj = val[CDR_MAJOR] >> 1;
 753                         for (ii = 1; ii <15; ii++)
 754                         {
 755                                 if(jj & 0x0001) printf("-%u ", ii);
 756                                 jj >>= 1;
 757                         }
 758                 }
 759                 printf("%s\n", (!kk) ? "\n\tLikely used CD-ROM ATAPI-1" : "" );
 760                 /* the cdrom stuff is more like ATA-2 than anything else, so: */
 761                 like_std = 2;
 762         }
 763
 764         if (min_std == 0xffff)
 765                 min_std = like_std > 4 ? like_std - 3 : 1;
 766
 767         printf("Configuration:\n");
 768         /* more info from the general configuration word */
 769         if ((eqpt != CDROM) && (like_std == 1))
 770         {
 771                 jj = val[GEN_CONFIG] >> 1;
 772                 for (ii = 1; ii < 15; ii++)
 773                 {
 774                         if(jj & 0x0001) printf("\t%s\n",ata1_cfg_str[ii]);
 775                         jj >>=1;
 776                 }
 777         }
 778         if (dev == ATAPI_DEV)
 779         {
 780                 if ((val[GEN_CONFIG] & DRQ_RESPONSE_TIME) ==  DRQ_3MS_VAL)
 781                         strng = "3ms";
 782                 else if ((val[GEN_CONFIG] & DRQ_RESPONSE_TIME) ==  DRQ_INTR_VAL)
 783                         strng = "<=10ms with INTRQ";
 784                 else if ((val[GEN_CONFIG] & DRQ_RESPONSE_TIME) ==  DRQ_50US_VAL)
 785                         strng ="50us";
 786                 else
 787                         strng = "Unknown";
 788                 printf("\tDRQ response: %s\n\tPacket size: ", strng); /* Data Request (DRQ) */
 789
 790                 if ((val[GEN_CONFIG] & PKT_SIZE_SUPPORTED) == PKT_SIZE_12_VAL)
 791                         strng = "12 bytes";
 792                 else if ((val[GEN_CONFIG] & PKT_SIZE_SUPPORTED) == PKT_SIZE_16_VAL)
 793                         strng = "16 bytes";
 794                 else
 795                         strng = "Unknown";
 796                 puts(strng);
 797         }
 798         else
 799         {
 800                 /* addressing...CHS? See section 6.2 of ATA specs 4 or 5 */
 801                 ll = (uint32_t)val[LBA_SECTS_MSB] << 16 | val[LBA_SECTS_LSB];
 802                 mm = 0; bbbig = 0;
 803                 if ( (ll > 0x00FBFC10) && (!val[LCYLS]))
 804                         printf("\tCHS addressing not supported\n");
 805                 else
 806                 {
 807                         jj = val[WHATS_VALID] & OK_W54_58;
 808                         printf("\tLogical\t\tmax\tcurrent\n\tcylinders\t%u\t%u\n\theads\t\t%u\t%u\n\tsectors/track\t%u\t%u\n\t--\n",
 809                                         val[LCYLS],jj?val[LCYLS_CUR]:0, val[LHEADS],jj?val[LHEADS_CUR]:0, val[LSECTS],jj?val[LSECTS_CUR]:0);
 810
 811                         if ((min_std == 1) && (val[TRACK_BYTES] || val[SECT_BYTES]))
 812                                 printf("\tbytes/track: %u\tbytes/sector: %u\n",val[TRACK_BYTES], val[SECT_BYTES]);
 813
 814                         if (jj)
 815                         {
 816                                 mm = (uint32_t)val[CAPACITY_MSB] << 16 | val[CAPACITY_LSB];
 817                                 if (like_std < 3)
 818                                 {
 819                                          /* check Endian of capacity bytes */
 820                                         nn = val[LCYLS_CUR] * val[LHEADS_CUR] * val[LSECTS_CUR];
 821                                         oo = (uint32_t)val[CAPACITY_LSB] << 16 | val[CAPACITY_MSB];
 822                                         if (abs(mm - nn) > abs(oo - nn))
 823                                                 mm = oo;
 824                                 }
 825                                 printf("\tCHS current addressable sectors:%11u\n",mm);
 826                         }
 827                 }
 828                 /* LBA addressing */
 829                 printf("\tLBA    user addressable sectors:%11u\n",ll);
 830                 if ( ((val[CMDS_SUPP_1] & VALID) == VALID_VAL) &&
 831                      (val[CMDS_SUPP_1] & SUPPORT_48_BIT) )
 832                 {
 833                         bbbig = (uint64_t)val[LBA_64_MSB]       << 48 |
 834                                 (uint64_t)val[LBA_48_MSB]       << 32 |
 835                                 (uint64_t)val[LBA_MID]  << 16 |
 836                                         val[LBA_LSB] ;
 837                         printf("\tLBA48  user addressable sectors:%11llu\n",(long long unsigned int)bbbig);
 838                 }
 839
 840                 if (!bbbig)
 841                         bbbig = (uint64_t)(ll>mm ? ll : mm); /* # 512 byte blocks */
 842                 printf("\tdevice size with M = 1024*1024: %11llu MBytes\n",(long long unsigned int)(bbbig>>11));
 843                 bbbig = (bbbig<<9)/1000000;
 844                 printf("\tdevice size with M = 1000*1000: %11llu MBytes ",(long long unsigned int)bbbig);
 845
 846                 if (bbbig > 1000)
 847                         printf("(%llu GB)\n", bbbig/1000);
 848                 else
 849                         printf("\n");
 850         }
 851
 852         /* hw support of commands (capabilities) */
 853         printf("Capabilities:\n\t");
 854
 855         if (dev == ATAPI_DEV)
 856         {
 857                 if (eqpt != CDROM && (val[CAPAB_0] & CMD_Q_SUP)) printf("Cmd queuing, ");
 858                 if (val[CAPAB_0] & OVLP_SUP) printf("Cmd overlap, ");
 859         }
 860         if (val[CAPAB_0] & LBA_SUP) printf("LBA, ");
 861
 862         if (like_std != 1)
 863         {
 864                 printf("IORDY%s(can%s be disabled)\n",
 865                                 !(val[CAPAB_0] & IORDY_SUP) ? "(may be)" : "",
 866                                 (val[CAPAB_0] & IORDY_OFF) ? "" :"not");
 867         }
 868         else
 869                 printf("no IORDY\n");
 870
 871         if ((like_std == 1) && val[BUF_TYPE])
 872         {
 873                 printf("\tBuffer type: %04x: %s%s\n", val[BUF_TYPE],
 874                                 (val[BUF_TYPE] < 2) ? "single port, single-sector" : "dual port, multi-sector",
 875                                 (val[BUF_TYPE] > 2) ? " with read caching ability" : "");
 876         }
 877
 878         if ((min_std == 1) && (val[BUFFER__SIZE] && (val[BUFFER__SIZE] != NOVAL_1)))
 879         {
 880                 printf("\tBuffer size: %.1fkB\n",(float)val[BUFFER__SIZE]/2);
 881         }
 882         if ((min_std < 4) && (val[RW_LONG]))
 883         {
 884                 printf("\tbytes avail on r/w long: %u\n",val[RW_LONG]);
 885         }
 886         if ((eqpt != CDROM) && (like_std > 3))
 887         {
 888                 printf("\tQueue depth: %u\n",(val[QUEUE_DEPTH] & DEPTH_BITS)+1);
 889         }
 890
 891         if (dev == ATA_DEV)
 892         {
 893                 if (like_std == 1)
 894                         printf("\tCan%s perform double-word IO\n",(!val[DWORD_IO]) ?"not":"");
 895                 else
 896                 {
 897                         printf("\tStandby timer values: spec'd by %s", (val[CAPAB_0] & STD_STBY) ? "Standard" : "Vendor");
 898                         if ((like_std > 3) && ((val[CAPAB_1] & VALID) == VALID_VAL))
 899                                 printf(", %s device specific minimum\n",(val[CAPAB_1] & MIN_STANDBY_TIMER)?"with":"no");
 900                         else
 901                           printf("\n");
 902                 }
 903                 printf("\tR/W multiple sector transfer: ");
 904                 if ((like_std < 3) && !(val[SECTOR_XFER_MAX] & SECTOR_XFER))
 905                         printf("not supported\n");
 906                 else
 907                 {
 908                         printf("Max = %u\tCurrent = ",val[SECTOR_XFER_MAX] & SECTOR_XFER);
 909                         if (val[SECTOR_XFER_CUR] & MULTIPLE_SETTING_VALID)
 910                                 printf("%u\n", val[SECTOR_XFER_CUR] & SECTOR_XFER);
 911                         else
 912                                 printf("?\n");
 913                 }
 914                 if ((like_std > 3) && (val[CMDS_SUPP_1] & 0x0008))
 915                 {
 916                         /* We print out elsewhere whether the APM feature is enabled or
 917                            not.  If it's not enabled, let's not repeat the info; just print
 918                            nothing here. */
 919                         printf("\tAdvancedPM level: ");
 920                         if ( (val[ADV_PWR] & 0xFF00) == 0x4000 )
 921                         {
 922                                 uint8_t apm_level = val[ADV_PWR] & 0x00FF;
 923                                 printf("%u (0x%x)\n", apm_level, apm_level);
 924                         }
 925                         else
 926                                 printf("unknown setting (0x%04x)\n", val[ADV_PWR]);
 927                 }
 928                 if (like_std > 5 && val[ACOUSTIC]) {
 929                         printf("\tRecommended acoustic management value: %u, current value: %u\n",
 930                                                                         (val[ACOUSTIC] >> 8) & 0x00ff, val[ACOUSTIC] & 0x00ff);
 931                 }
 932         }
 933         else
 934         {
 935                  /* ATAPI */
 936                 if (eqpt != CDROM && (val[CAPAB_0] & SWRST_REQ))
 937                         printf("\tATA sw reset required\n");
 938
 939                 if (val[PKT_REL] || val[SVC_NBSY])
 940                 {
 941                         printf("\tOverlap support:");
 942                         if (val[PKT_REL]) printf(" %uus to release bus.",val[PKT_REL]);
 943                         if (val[SVC_NBSY]) printf(" %uus to clear BSY after SERVICE cmd.",val[SVC_NBSY]);
 944                         printf("\n");
 945                 }
 946         }
 947
 948         /* DMA stuff. Check that only one DMA mode is selected. */
 949         printf("\tDMA: ");
 950         if (!(val[CAPAB_0] & DMA_SUP))
 951                 printf("not supported\n");
 952         else
 953         {
 954                 if (val[DMA_MODE] && !val[SINGLE_DMA] && !val[MULTI_DMA])
 955                         printf(" sdma%u\n",(val[DMA_MODE] & MODE) >> 8);
 956                 if (val[SINGLE_DMA])
 957                 {
 958                         jj = val[SINGLE_DMA];
 959                         kk = val[SINGLE_DMA] >> 8;
 960                         err_dma += mode_loop(jj,kk,'s',&have_mode);
 961                 }
 962                 if (val[MULTI_DMA])
 963                 {
 964                         jj = val[MULTI_DMA];
 965                         kk = val[MULTI_DMA] >> 8;
 966                         err_dma += mode_loop(jj,kk,'m',&have_mode);
 967                 }
 968                 if ((val[WHATS_VALID] & OK_W88) && val[ULTRA_DMA])
 969                 {
 970                         jj = val[ULTRA_DMA];
 971                         kk = val[ULTRA_DMA] >> 8;
 972                         err_dma += mode_loop(jj,kk,'u',&have_mode);
 973                 }
 974                 if (err_dma || !have_mode) printf("(?)");
 975                 printf("\n");
 976
 977                 if ((dev == ATAPI_DEV) && (eqpt != CDROM) && (val[CAPAB_0] & DMA_IL_SUP))
 978                         printf("\t\tInterleaved DMA support\n");
 979
 980                 if ((val[WHATS_VALID] & OK_W64_70) &&
 981                    (val[DMA_TIME_MIN] || val[DMA_TIME_NORM]))
 982                 {
 983                         printf("\t\tCycle time:");
 984                         if (val[DMA_TIME_MIN]) printf(" min=%uns",val[DMA_TIME_MIN]);
 985                         if (val[DMA_TIME_NORM]) printf(" recommended=%uns",val[DMA_TIME_NORM]);
 986                         printf("\n");
 987                 }
 988         }
 989
 990         /* Programmed IO stuff */
 991         printf("\tPIO: ");
 992         /* If a drive supports mode n (e.g. 3), it also supports all modes less
 993          * than n (e.g. 3, 2, 1 and 0).  Print all the modes. */
 994         if ((val[WHATS_VALID] & OK_W64_70) && (val[ADV_PIO_MODES] & PIO_SUP))
 995         {
 996                 jj = ((val[ADV_PIO_MODES] & PIO_SUP) << 3) | 0x0007;
 997                 for (ii = 0; ii <= PIO_MODE_MAX ; ii++)
 998                 {
 999                         if (jj & 0x0001) printf("pio%d ",ii);
1000                         jj >>=1;
1001                 }
1002                 printf("\n");
1003         }
1004         else if (((min_std < 5) || (eqpt == CDROM)) && (val[PIO_MODE] & MODE) )
1005         {
1006                 for (ii = 0; ii <= val[PIO_MODE]>>8; ii++)
1007                         printf("pio%d ",ii);
1008                 printf("\n");
1009         }
1010         else
1011                 printf("unknown\n");
1012
1013         if (val[WHATS_VALID] & OK_W64_70)
1014         {
1015                 if (val[PIO_NO_FLOW] || val[PIO_FLOW])
1016                 {
1017                         printf("\t\tCycle time:");
1018                         if (val[PIO_NO_FLOW]) printf(" no flow control=%uns", val[PIO_NO_FLOW]);
1019                         if (val[PIO_FLOW]) printf("  IORDY flow control=%uns", val[PIO_FLOW]);
1020                         printf("\n");
1021                 }
1022         }
1023
1024         if ((val[CMDS_SUPP_1] & VALID) == VALID_VAL)
1025         {
1026                 printf("Commands/features:\n\tEnabled\tSupported:\n");
1027                 jj = val[CMDS_SUPP_0];
1028                 kk = val[CMDS_EN_0];
1029                 for (ii = 0; ii < NUM_CMD_FEAT_STR; ii++)
1030                 {
1031                         if ((jj & 0x8000) && (*cmd_feat_str[ii] != '\0'))
1032                         {
1033                                 printf("\t%s\t%s\n", (kk & 0x8000) ? "   *" : "", cmd_feat_str[ii]);
1034                         }
1035                         jj <<=1; kk<<=1;
1036                         if (ii%16 == 15)
1037                         {
1038                                 jj = val[CMDS_SUPP_0+1+(ii/16)];
1039                                 kk = val[CMDS_EN_0+1+(ii/16)];
1040                         }
1041                         if (ii == 31)
1042                         {
1043                                 if ((val[CMDS_SUPP_2] & VALID) != VALID_VAL)
1044                                         ii +=16;
1045                         }
1046                 }
1047         }
1048         /* Removable Media Status Notification feature set */
1049         if((val[RM_STAT] & RM_STAT_BITS) == RM_STAT_SUP)
1050                 printf("\t%s supported\n", cmd_feat_str[27]);
1051
1052
1053         /* security */
1054         if ((eqpt != CDROM) && (like_std > 3) &&
1055            (val[SECU_STATUS] || val[ERASE_TIME] || val[ENH_ERASE_TIME]))
1056         {
1057                 printf("Security: \n");
1058                 if (val[PSWD_CODE] && (val[PSWD_CODE] != NOVAL_1))
1059                         printf("\tMaster password revision code = %u\n",val[PSWD_CODE]);
1060                 jj = val[SECU_STATUS];
1061                 if (jj)
1062                 {
1063                         for (ii = 0; ii < NUM_SECU_STR; ii++)
1064                         {
1065                                 printf("\t%s\t%s\n", (!(jj & 0x0001)) ? "not" : "",  secu_str[ii]);
1066                                 jj >>=1;
1067                         }
1068                         if (val[SECU_STATUS] & SECU_ENABLED)
1069                         {
1070                                 printf("\tSecurity level %s\n", (val[SECU_STATUS] & SECU_LEVEL) ? "maximum" : "high");
1071                         }
1072                 }
1073                 jj =  val[ERASE_TIME]     & ERASE_BITS;
1074                 kk =  val[ENH_ERASE_TIME] & ERASE_BITS;
1075                 if (jj || kk)
1076                 {
1077                         printf("\t");
1078                         if (jj) printf("%umin for SECURITY ERASE UNIT. ", jj==ERASE_BITS ? 508 : jj<<1);
1079                         if (kk) printf("%umin for ENHANCED SECURITY ERASE UNIT.", kk==ERASE_BITS ? 508 : kk<<1);
1080                         printf("\n");
1081                 }
1082         }
1083
1084         /* reset result */
1085         jj = val[HWRST_RSLT];
1086         if ((jj & VALID) == VALID_VAL)
1087         {
1088                 if (!(oo = (jj & RST0)))
1089                         jj >>= 8;
1090                 if ((jj & DEV_DET) == JUMPER_VAL)
1091                         strng = " determined by the jumper";
1092                 else if ((jj & DEV_DET) == CSEL_VAL)
1093                         strng = " determined by CSEL";
1094                 else
1095                         strng = "";
1096                 printf("HW reset results:\n\tCBLID- %s Vih\n\tDevice num = %i%s\n",
1097                                 (val[HWRST_RSLT] & CBLID) ? "above" : "below", !(oo), strng);
1098         }
1099
1100         /* more stuff from std 5 */
1101         if ((like_std > 4) && (eqpt != CDROM))
1102         {
1103                 if (val[CFA_PWR_MODE] & VALID_W160)
1104                 {
1105                         printf("CFA power mode 1:\n\t%s%s\n", (val[CFA_PWR_MODE] & PWR_MODE_OFF) ? "disabled" : "enabled",
1106                                                                                 (val[CFA_PWR_MODE] & PWR_MODE_REQ) ? " and required by some commands" : "");
1107
1108                         if (val[CFA_PWR_MODE] & MAX_AMPS) printf("\tMaximum current = %uma\n",val[CFA_PWR_MODE] & MAX_AMPS);
1109                 }
1110                 if ((val[INTEGRITY] & SIG) == SIG_VAL)
1111                 {
1112                         printf("Checksum: %scorrect\n", chksum ? "in" : "");
1113                 }
1114         }
1115
1116         exit(EXIT_SUCCESS);
1117 }
1118 #endif
1119
1120 static int verbose, get_identity, get_geom, noisy = 1, quiet;
1121 static int flagcount, do_flush;
1122 static int do_ctimings, do_timings;
1123
1124 static unsigned long set_readahead, get_readahead, Xreadahead;
1125 static unsigned long set_readonly, get_readonly, readonly;
1126 static unsigned long set_unmask, get_unmask, unmask;
1127 static unsigned long set_mult, get_mult, mult;
1128 #ifdef CONFIG_FEATURE_HDPARM_HDIO_GETSET_DMA
1129 static unsigned long set_dma, get_dma, dma;
1130 #endif
1131 static unsigned long set_dma_q, get_dma_q, dma_q;
1132 static unsigned long set_nowerr, get_nowerr, nowerr;
1133 static unsigned long set_keep, get_keep, keep;
1134 static unsigned long set_io32bit, get_io32bit, io32bit;
1135 static unsigned long set_piomode, noisy_piomode;
1136 static int piomode;
1137 #ifdef HDIO_DRIVE_CMD
1138 static unsigned long set_dkeep, get_dkeep, dkeep;
1139 static unsigned long set_standby, get_standby, standby_requested;
1140 static unsigned long set_xfermode, get_xfermode;
1141 static int xfermode_requested;
1142 static unsigned long set_lookahead, get_lookahead, lookahead;
1143 static unsigned long set_prefetch, get_prefetch, prefetch;
1144 static unsigned long set_defects, get_defects, defects;
1145 static unsigned long set_wcache, get_wcache, wcache;
1146 static unsigned long set_doorlock, get_doorlock, doorlock;
1147 static unsigned long set_seagate, get_seagate;
1148 static unsigned long set_standbynow, get_standbynow;
1149 static unsigned long set_sleepnow, get_sleepnow;
1150 static unsigned long get_powermode;
1151 static unsigned long set_apmmode, get_apmmode, apmmode;
1152 #endif
1153 #ifdef CONFIG_FEATURE_HDPARM_GET_IDENTITY
1154 static int get_IDentity;
1155 #endif
1156 #ifdef CONFIG_FEATURE_HDPARM_HDIO_UNREGISTER_HWIF
1157 static unsigned long    unregister_hwif;
1158 static unsigned long    hwif;
1159 #endif
1160 #ifdef CONFIG_FEATURE_HDPARM_HDIO_SCAN_HWIF
1161 static unsigned long scan_hwif;
1162 static unsigned long hwif_data;
1163 static unsigned long hwif_ctrl;
1164 static unsigned long hwif_irq;
1165 #endif
1166 #ifdef CONFIG_FEATURE_HDPARM_HDIO_TRISTATE_HWIF
1167 static unsigned long    set_busstate, get_busstate, busstate;
1168 #endif
1169 static int      reread_partn;
1170
1171 #ifdef CONFIG_FEATURE_HDPARM_HDIO_DRIVE_RESET
1172 static int      perform_reset;
1173 #endif /* CONFIG_FEATURE_HDPARM_HDIO_DRIVE_RESET */
1174 #ifdef CONFIG_FEATURE_HDPARM_HDIO_TRISTATE_HWIF
1175 static unsigned long    perform_tristate,       tristate;
1176 #endif /* CONFIG_FEATURE_HDPARM_HDIO_TRISTATE_HWIF */
1177
1178 // Historically, if there was no HDIO_OBSOLETE_IDENTITY, then
1179 // then the HDIO_GET_IDENTITY only returned 142 bytes.
1180 // Otherwise, HDIO_OBSOLETE_IDENTITY returns 142 bytes,
1181 // and HDIO_GET_IDENTITY returns 512 bytes.  But the latest
1182 // 2.5.xx kernels no longer define HDIO_OBSOLETE_IDENTITY
1183 // (which they should, but they should just return -EINVAL).
1184 //
1185 // So.. we must now assume that HDIO_GET_IDENTITY returns 512 bytes.
1186 // On a really old system, it will not, and we will be confused.
1187 // Too bad, really.
1188
1189 #ifdef CONFIG_FEATURE_HDPARM_GET_IDENTITY
1190 static const char * const cfg_str[] =
1191 {       "",          "HardSect",   "SoftSect",   "NotMFM",
1192         "HdSw>15uSec", "SpinMotCtl", "Fixed",     "Removeable",
1193         "DTR<=5Mbs",   "DTR>5Mbs",   "DTR>10Mbs", "RotSpdTol>.5%",
1194         "dStbOff",     "TrkOff",     "FmtGapReq", "nonMagnetic"
1195 };
1196
1197 static const char * const BuffType[] = {"Unknown", "1Sect", "DualPort", "DualPortCache"};
1198
1199 static void dump_identity(const struct hd_driveid *id)
1200 {
1201         int i;
1202         char pmodes[64], dmodes[128], umodes[128];
1203         const unsigned short int *id_regs= (const void*) id;
1204         unsigned long capacity;
1205
1206         pmodes[0] = dmodes[0] = umodes[0] = '\0';
1207
1208         printf("\n Model=%.40s, FwRev=%.8s, SerialNo=%.20s\n Config={",
1209                                 id->model, id->fw_rev, id->serial_no);
1210         for (i=0; i<=15; i++) {
1211                         if (id->config & (1<<i))
1212                                         printf(" %s", cfg_str[i]);
1213         }
1214         printf( " }\n RawCHS=%u/%u/%u, TrkSize=%u, SectSize=%u, ECCbytes=%u\n"
1215                         " BuffType=(%u) %s, BuffSize=%ukB, MaxMultSect=%u",
1216                                 id->cyls, id->heads, id->sectors, id->track_bytes,
1217                                 id->sector_bytes, id->ecc_bytes,
1218                                 id->buf_type, BuffType[(id->buf_type > 3) ? 0 :  id->buf_type],
1219                                 id->buf_size/2, id->max_multsect);
1220         if (id->max_multsect)
1221         {
1222                 printf(", MultSect=");
1223                 if (!(id->multsect_valid&1))
1224                         printf("?%u?", id->multsect);
1225                 else if (id->multsect)
1226                         printf("%u", id->multsect);
1227                 else
1228                         printf("off");
1229         }
1230         printf("\n");
1231         if (id->tPIO <= 5)
1232         {
1233                 strcat(pmodes, "pio0 ");
1234                 if_strcat((id->tPIO >= 1), pmodes, "pio1 ");
1235                 if_strcat((id->tPIO >= 2), pmodes, "pio2 ");
1236
1237         }
1238         if(!(id->field_valid&1)) printf(" (maybe):");
1239         if (BB_BIG_ENDIAN) capacity = (id->cur_capacity0 << 16) | id->cur_capacity1;
1240         else capacity = (id->cur_capacity1 << 16) | id->cur_capacity0;
1241         printf(" CurCHS=%u/%u/%u, CurSects=%lu, LBA=%s",id->cur_cyls, id->cur_heads,
1242                                                                                                         id->cur_sectors, capacity ,
1243                                                                                         ((id->capability&2)==0)?"no":"yes");
1244
1245         if (id->capability&2) printf(", LBAsects=%u", id->lba_capacity);
1246
1247         if (id->capability&1)
1248         {
1249                 if (id->dma_1word | id->dma_mword)
1250                 {
1251                         if_strcat((id->dma_1word & 0x100),      dmodes, "*");
1252                         if_strcat((id->dma_1word & 1),          dmodes, "sdma0 ");
1253                         if_strcat((id->dma_1word & 0x200),      dmodes, "*");
1254                         if_strcat((id->dma_1word & 2),          dmodes, "sdma1 ");
1255                         if_strcat((id->dma_1word & 0x400),      dmodes, "*");
1256                         if_strcat((id->dma_1word & 4),          dmodes, "sdma2 ");
1257                         if_strcat((id->dma_1word & 0xf800),     dmodes, "*");
1258                         if_strcat((id->dma_1word & 0xf8),       dmodes, "sdma? ");
1259                         if_strcat((id->dma_mword & 0x100),      dmodes, "*");
1260                         if_strcat((id->dma_mword & 1),          dmodes, "mdma0 ");
1261                         if_strcat((id->dma_mword & 0x200),      dmodes, "*");
1262                         if_strcat((id->dma_mword & 2),          dmodes, "mdma1 ");
1263                         if_strcat((id->dma_mword & 0x400),      dmodes, "*");
1264                         if_strcat((id->dma_mword & 4),          dmodes, "mdma2 ");
1265                         if_strcat((id->dma_mword & 0xf800),     dmodes, "*");
1266                         if_strcat((id->dma_mword & 0xf8),       dmodes, "mdma? ");
1267                 }
1268         }
1269         printf("\n IORDY=");
1270         if (id->capability&8)
1271                 printf((id->capability&4) ? "on/off" : "yes");
1272         else
1273                 printf("no");
1274
1275         if ((id->capability&8) || (id->field_valid&2))
1276         {
1277                 if (id->field_valid&2)
1278                 {
1279                         printf(", tPIO={min:%u,w/IORDY:%u}", id->eide_pio, id->eide_pio_iordy);
1280                         if_strcat((id->eide_pio_modes & 1), pmodes, "pio3 ");
1281                         if_strcat((id->eide_pio_modes & 2), pmodes, "pio4 ");
1282                         if_strcat((id->eide_pio_modes &~3), pmodes, "pio? ");
1283                 }
1284                 if (id->field_valid&4)
1285                 {
1286                         if_strcat((id->dma_ultra & 0x100),umodes,"*");
1287                         if_strcat((id->dma_ultra & 0x001),umodes,"udma0 ");
1288                         if_strcat((id->dma_ultra & 0x200),umodes,"*");
1289                         if_strcat((id->dma_ultra & 0x002),umodes,"udma1 ");
1290                         if_strcat((id->dma_ultra & 0x400),umodes,"*");
1291                         if_strcat((id->dma_ultra & 0x004),umodes,"udma2 ");
1292 #ifdef __NEW_HD_DRIVE_ID
1293                         if (id->hw_config & 0x2000)
1294                         {
1295 #else /* !__NEW_HD_DRIVE_ID */
1296                         if (id->word93 & 0x2000)
1297                         {
1298 #endif /* __NEW_HD_DRIVE_ID */
1299                                 if_strcat((id->dma_ultra & 0x0800),umodes,"*");
1300                                 if_strcat((id->dma_ultra & 0x0008),umodes,"udma3 ");
1301                                 if_strcat((id->dma_ultra & 0x1000),umodes,"*");
1302                                 if_strcat((id->dma_ultra & 0x0010),umodes,"udma4 ");
1303                                 if_strcat((id->dma_ultra & 0x2000),umodes,"*");
1304                                 if_strcat((id->dma_ultra & 0x0020),umodes,"udma5 ");
1305                                 if_strcat((id->dma_ultra & 0x4000),umodes,"*");
1306                                 if_strcat((id->dma_ultra & 0x0040),umodes,"udma6 ");
1307                                 if_strcat((id->dma_ultra & 0x8000),umodes,"*");
1308                                 if_strcat((id->dma_ultra & 0x0080),umodes,"udma7 ");
1309                         }
1310                 }
1311         }
1312         if ((id->capability&1) && (id->field_valid&2))
1313                 printf(", tDMA={min:%u,rec:%u}", id->eide_dma_min, id->eide_dma_time);
1314         printf("\n PIO modes:  %s", pmodes);
1315         if (*dmodes) printf("\n DMA modes:  %s", dmodes);
1316         if (*umodes) printf("\n UDMA modes: %s", umodes);
1317
1318         printf("\n AdvancedPM=%s",((id_regs[83]&8)==0)?"no":"yes");
1319         if (id_regs[83] & 8)
1320         {
1321                 if (!(id_regs[86]&8))
1322                         printf(": disabled (255)");
1323                 else if ((id_regs[91]&0xFF00)!=0x4000)
1324                         printf(": unknown setting");
1325                 else
1326                         printf(": mode=0x%02X (%u)",id_regs[91]&0xFF,id_regs[91]&0xFF);
1327         }
1328         if (id_regs[82]&0x20) printf(" WriteCache=%s",(id_regs[85]&0x20) ? "enabled" : "disabled");
1329 #ifdef __NEW_HD_DRIVE_ID
1330         if ((id->minor_rev_num && id->minor_rev_num <= 31) || (id->major_rev_num && id->minor_rev_num <= 31))
1331         {
1332                 printf("\n Drive conforms to: %s: ", (id->minor_rev_num <= 31) ? minor_str[id->minor_rev_num] : "Unknown");
1333                 if (id->major_rev_num != 0x0000 &&  /* NOVAL_0 */
1334                     id->major_rev_num != 0xFFFF) {  /* NOVAL_1 */
1335                         for (i=0; i <= 15; i++) {
1336                                 if (id->major_rev_num & (1<<i))
1337                                                 printf(" ATA/ATAPI-%u", i);
1338                         }
1339                 }
1340         }
1341 #endif /* __NEW_HD_DRIVE_ID */
1342         printf("\n\n * signifies the current active mode\n\n");
1343 }
1344 #endif
1345
1346 static void flush_buffer_cache(int fd)
1347 {
1348         fsync(fd);                              /* flush buffers */
1349         bb_ioctl(fd, BLKFLSBUF, NULL,"BLKFLSBUF" ) ;/* do it again, big time */
1350 #ifdef HDIO_DRIVE_CMD
1351         sleep(1);
1352         if (ioctl(fd, HDIO_DRIVE_CMD, NULL) && errno != EINVAL) /* await completion */
1353                 bb_perror_msg("HDIO_DRIVE_CMD");
1354 #endif
1355 }
1356
1357 static int seek_to_zero(int fd)
1358 {
1359         if (lseek(fd, (off_t) 0, SEEK_SET))
1360                 return 1;
1361         return 0;
1362 }
1363
1364 static int read_big_block(int fd, char *buf)
1365 {
1366         int i;
1367
1368         if ((i = read(fd, buf, TIMING_BUF_BYTES)) != TIMING_BUF_BYTES) {
1369                 bb_error_msg("read(%d bytes) failed (rc=%d)", TIMING_BUF_BYTES, i);
1370                 return 1;
1371         }
1372
1373         /* access all sectors of buf to ensure the read fully completed */
1374         for (i = 0; i < TIMING_BUF_BYTES; i += 512)
1375                 buf[i] &= 1;
1376         return 0;
1377 }
1378
1379 static void print_timing(int t, double e)
1380 {
1381         if (t >= e)  /* more than 1MB/s */
1382                 printf("%2d MB in %5.2f seconds =%6.2f MB/sec\n", t, e, t / e);
1383         else
1384                 printf("%2d MB in %5.2f seconds =%6.2f kB/sec\n", t, e, t / e * 1024);
1385 }
1386
1387 static int do_blkgetsize (int fd, unsigned long long *blksize64)
1388 {
1389         int             rc;
1390         unsigned int    blksize32 = 0;
1391
1392         if (0 == ioctl(fd, BLKGETSIZE64, blksize64)) {  // returns bytes
1393                 *blksize64 /= 512;
1394                 return 0;
1395         }
1396         rc = ioctl(fd, BLKGETSIZE, &blksize32); // returns sectors
1397         if (rc)
1398                 bb_perror_msg("BLKGETSIZE");
1399         *blksize64 = blksize32;
1400         return rc;
1401 }
1402
1403 static void do_time(int flag, int fd)
1404 /*
1405         flag = 0 time_cache
1406         flag = 1 time_device
1407 */
1408 {
1409         char *buf;
1410         struct itimerval e1, e2;
1411         int shmid;
1412         double elapsed, elapsed2;
1413         unsigned int max_iterations = 1024, total_MB, iterations;
1414         unsigned long long blksize;
1415
1416         if (0 == do_blkgetsize(fd, &blksize)) {
1417                 max_iterations = blksize / (2 * 1024) / TIMING_BUF_MB;
1418         }
1419
1420         if ((shmid = shmget(IPC_PRIVATE, TIMING_BUF_BYTES, 0600)) == -1)
1421         {
1422                 bb_perror_msg("shmget"); /*"could not allocate sharedmem buf"*/
1423                 return;
1424         }
1425         if (shmctl(shmid, SHM_LOCK, NULL) == -1)
1426         {
1427                 bb_perror_msg("shmctl"); /*"could not lock sharedmem buf"*/
1428                 (void) shmctl(shmid, IPC_RMID, NULL);
1429                 return;
1430         }
1431         if ((buf = shmat(shmid, (char *) 0, 0)) == (char *) -1)
1432         {
1433                 bb_perror_msg("shmat"); /*"could not attach sharedmem buf"*/
1434                 (void) shmctl(shmid, IPC_RMID, NULL);
1435                 return;
1436         }
1437         if (shmctl(shmid, IPC_RMID, NULL) == -1)
1438                 bb_perror_msg("shmctl");
1439
1440         /* Clear out the device request queues & give them time to complete */
1441         sync();
1442         sleep(3);
1443
1444         setitimer(ITIMER_REAL, &(struct itimerval){{1000,0},{1000,0}}, NULL);
1445
1446         if (flag  == 0) /* Time cache */
1447         {
1448                 if (seek_to_zero (fd)) return;
1449                 if (read_big_block (fd, buf)) return;
1450                 printf(" Timing cached reads:   ");
1451                 fflush(stdout);
1452
1453                 /* Now do the timing */
1454                 iterations = 0;
1455                 getitimer(ITIMER_REAL, &e1);
1456                 do {
1457                         ++iterations;
1458                         if (seek_to_zero (fd) || read_big_block (fd, buf))
1459                                 goto quit;
1460                         getitimer(ITIMER_REAL, &e2);
1461                         elapsed = (e1.it_value.tv_sec - e2.it_value.tv_sec)
1462                         + ((e1.it_value.tv_usec - e2.it_value.tv_usec) / 1000000.0);
1463                 } while (elapsed < 2.0);
1464                 total_MB = iterations * TIMING_BUF_MB;
1465
1466                 elapsed = (e1.it_value.tv_sec - e2.it_value.tv_sec)
1467                 + ((e1.it_value.tv_usec - e2.it_value.tv_usec) / 1000000.0);
1468
1469                 /* Now remove the lseek() and getitimer() overheads from the elapsed time */
1470                 getitimer(ITIMER_REAL, &e1);
1471                 do {
1472                         if (seek_to_zero (fd))
1473                                 goto quit;
1474                         getitimer(ITIMER_REAL, &e2);
1475                         elapsed2 = (e1.it_value.tv_sec - e2.it_value.tv_sec)
1476                         + ((e1.it_value.tv_usec - e2.it_value.tv_usec) / 1000000.0);
1477                 } while (--iterations);
1478
1479                 elapsed -= elapsed2;
1480                 print_timing(BUFCACHE_FACTOR * total_MB, elapsed);
1481                 flush_buffer_cache(fd);
1482                 sleep(1);
1483         }
1484         else /* Time device */
1485         {
1486                 printf(" Timing buffered disk reads:  ");
1487                 fflush(stdout);
1488                 /*
1489                 * getitimer() is used rather than gettimeofday() because
1490                 * it is much more consistent (on my machine, at least).
1491                 */
1492                 /* Now do the timings for real */
1493                 iterations = 0;
1494                 getitimer(ITIMER_REAL, &e1);
1495                 do {
1496                         ++iterations;
1497                         if (read_big_block (fd, buf))
1498                                 goto quit;
1499                         getitimer(ITIMER_REAL, &e2);
1500                         elapsed = (e1.it_value.tv_sec - e2.it_value.tv_sec)
1501                         + ((e1.it_value.tv_usec - e2.it_value.tv_usec) / 1000000.0);
1502                 } while (elapsed < 3.0 && iterations < max_iterations);
1503
1504                 total_MB = iterations * TIMING_BUF_MB;
1505                 print_timing(total_MB, elapsed);
1506         }
1507 quit:
1508         if (-1 == shmdt(buf))
1509                 bb_perror_msg("shmdt"); /*"could not detach sharedmem buf"*/
1510 }
1511
1512 static void on_off (unsigned int value)
1513 {
1514         printf(value ? " (on)\n" : " (off)\n");
1515 }
1516
1517 #ifdef CONFIG_FEATURE_HDPARM_HDIO_TRISTATE_HWIF
1518 static void bus_state_value(unsigned int value)
1519 {
1520         if (value == BUSSTATE_ON)
1521                 on_off(1);
1522         else if (value == BUSSTATE_OFF)
1523                 on_off(0);
1524         else if (value == BUSSTATE_TRISTATE)
1525                 printf(" (tristate)\n");
1526         else
1527                 printf(" (unknown: %d)\n", value);
1528 }
1529 #endif
1530
1531 #ifdef HDIO_DRIVE_CMD
1532 static void interpret_standby(unsigned int standby)
1533 {
1534         unsigned int t;
1535
1536
1537         if (standby == 0)
1538                 printf("off");
1539         else if (standby == 252)
1540                 printf("21 minutes");
1541         else if (standby == 253)
1542                 printf("vendor-specific");
1543         else if (standby == 254)
1544                 printf("Reserved");
1545         else if (standby == 255)
1546                 printf("21 minutes + 15 seconds");
1547         else {
1548                 if (standby <= 240) {
1549                         t = standby * 5;
1550                         printf("%u minutes + %u seconds", t / 60, t % 60);
1551                 } else if (standby <= 251) {
1552                         t = (standby - 240) * 30;
1553                         printf("%u hours + %u minutes", t / 60, t % 60);
1554                 } else
1555                         printf("illegal value");
1556         }
1557         printf(")\n");
1558 }
1559
1560 struct xfermode_entry {
1561     int val;
1562     const char *name;
1563 };
1564
1565 static const struct xfermode_entry xfermode_table[] = {
1566     { 8,    "pio0" },
1567     { 9,    "pio1" },
1568     { 10,   "pio2" },
1569     { 11,   "pio3" },
1570     { 12,   "pio4" },
1571     { 13,   "pio5" },
1572     { 14,   "pio6" },
1573     { 15,   "pio7" },
1574     { 16,   "sdma0" },
1575     { 17,   "sdma1" },
1576     { 18,   "sdma2" },
1577     { 19,   "sdma3" },
1578     { 20,   "sdma4" },
1579     { 21,   "sdma5" },
1580     { 22,   "sdma6" },
1581     { 23,   "sdma7" },
1582     { 32,   "mdma0" },
1583     { 33,   "mdma1" },
1584     { 34,   "mdma2" },
1585     { 35,   "mdma3" },
1586     { 36,   "mdma4" },
1587     { 37,   "mdma5" },
1588     { 38,   "mdma6" },
1589     { 39,   "mdma7" },
1590     { 64,   "udma0" },
1591     { 65,   "udma1" },
1592     { 66,   "udma2" },
1593     { 67,   "udma3" },
1594     { 68,   "udma4" },
1595     { 69,   "udma5" },
1596     { 70,   "udma6" },
1597     { 71,   "udma7" },
1598     { 0, NULL }
1599 };
1600
1601 static int translate_xfermode(char * name)
1602 {
1603         const struct xfermode_entry *tmp;
1604         char *endptr;
1605         int val = -1;
1606
1607
1608         for (tmp = xfermode_table; tmp->name != NULL; ++tmp)
1609         {
1610                 if (!strcmp(name, tmp->name))
1611                         return tmp->val;
1612         }
1613
1614         val = strtol(name, &endptr, 10);
1615         if (*endptr == '\0')
1616                 return val;
1617
1618         return -1;
1619 }
1620
1621 static void interpret_xfermode(unsigned int xfermode)
1622 {
1623         printf(" (");
1624         if (xfermode == 0)
1625                 printf("default PIO mode");
1626         else if (xfermode == 1)
1627                 printf("default PIO mode, disable IORDY");
1628         else if (xfermode >= 8 && xfermode <= 15)
1629                 printf("PIO flow control mode%u", xfermode-8);
1630         else if (xfermode >= 16 && xfermode <= 23)
1631                 printf("singleword DMA mode%u", xfermode-16);
1632         else if (xfermode >= 32 && xfermode <= 39)
1633                 printf("multiword DMA mode%u", xfermode-32);
1634         else if (xfermode >= 64 && xfermode <= 71)
1635                 printf("UltraDMA mode%u", xfermode-64);
1636         else
1637                 printf("Unknown");
1638         printf(")\n");
1639 }
1640 #endif /* HDIO_DRIVE_CMD */
1641
1642 static void print_flag(unsigned long flag, char *s, unsigned long value)
1643 {
1644         if(flag)
1645                 printf(" setting %s to %ld\n", s, value);
1646 }
1647
1648 static void process_dev(char *devname)
1649 {
1650         int fd;
1651         static long parm, multcount;
1652 #ifndef HDIO_DRIVE_CMD
1653         int force_operation = 0;
1654 #endif
1655         /* Please restore args[n] to these values after each ioctl
1656            except for args[2] */
1657         unsigned char args[4] = {WIN_SETFEATURES,0,0,0};
1658         const char *fmt = " %s\t= %2ld";
1659
1660         fd = bb_xopen(devname, O_RDONLY|O_NONBLOCK);
1661         if (!quiet) printf("\n%s:\n", devname);
1662
1663         if (set_readahead)
1664         {
1665                 print_flag(get_readahead,"fs readahead", Xreadahead);
1666                 bb_ioctl(fd, BLKRASET,(int *)Xreadahead,"BLKRASET");
1667         }
1668 #ifdef CONFIG_FEATURE_HDPARM_HDIO_UNREGISTER_HWIF
1669         if (unregister_hwif)
1670         {
1671                 printf(" attempting to unregister hwif#%lu\n", hwif);
1672                 bb_ioctl(fd, HDIO_UNREGISTER_HWIF,(int *)(unsigned long)hwif,"HDIO_UNREGISTER_HWIF");
1673         }
1674 #endif
1675 #ifdef CONFIG_FEATURE_HDPARM_HDIO_SCAN_HWIF
1676         if (scan_hwif)
1677         {
1678                 printf(" attempting to scan hwif (0x%lx, 0x%lx, %lu)\n", hwif_data, hwif_ctrl, hwif_irq);
1679                 args[0] = hwif_data;
1680                 args[1] = hwif_ctrl;
1681                 args[2] = hwif_irq;
1682                 bb_ioctl(fd, HDIO_SCAN_HWIF, args, "HDIO_SCAN_HWIF");
1683                 args[0] = WIN_SETFEATURES;
1684                 args[1] = 0;
1685         }
1686 #endif
1687         if (set_piomode)
1688         {
1689                 if (noisy_piomode)
1690                 {
1691                         printf(" attempting to ");
1692                         if (piomode == 255)
1693                                 printf("auto-tune PIO mode\n");
1694                         else if (piomode < 100)
1695                                 printf("set PIO mode to %d\n", piomode);
1696                         else if (piomode < 200)
1697                                 printf("set MDMA mode to %d\n", (piomode-100));
1698                         else
1699                                 printf("set UDMA mode to %d\n", (piomode-200));
1700                 }
1701                 bb_ioctl(fd, HDIO_SET_PIO_MODE, (int *)(unsigned long)piomode, "HDIO_SET_PIO_MODE");
1702         }
1703         if (set_io32bit)
1704         {
1705                 print_flag(get_io32bit,"32-bit IO_support flag", io32bit);
1706                 bb_ioctl(fd, HDIO_SET_32BIT, (int *)io32bit, "HDIO_SET_32BIT");
1707         }
1708         if (set_mult)
1709         {
1710                 print_flag(get_mult, "multcount", mult);
1711                 if (ioctl(fd, HDIO_SET_MULTCOUNT, mult))
1712                         bb_perror_msg("HDIO_SET_MULTCOUNT");
1713 #ifndef HDIO_DRIVE_CMD
1714                 else
1715                         force_operation = 1;
1716 #endif
1717         }
1718         if (set_readonly)
1719         {
1720                 print_flag_on_off(get_readonly,"readonly", readonly);
1721                 bb_ioctl(fd, BLKROSET, &readonly, "BLKROSET");
1722         }
1723         if (set_unmask)
1724         {
1725                 print_flag_on_off(get_unmask,"unmaskirq", unmask);
1726                 bb_ioctl(fd, HDIO_SET_UNMASKINTR, (int *)unmask, "HDIO_SET_UNMASKINTR");
1727         }
1728 #ifdef CONFIG_FEATURE_HDPARM_HDIO_GETSET_DMA
1729         if (set_dma)
1730         {
1731                 print_flag_on_off(get_dma, "using_dma", dma);
1732                 bb_ioctl(fd, HDIO_SET_DMA, (int *)dma, "HDIO_SET_DMA");
1733         }
1734 #endif /* CONFIG_FEATURE_HDPARM_HDIO_GETSET_DMA */
1735         if (set_dma_q)
1736         {
1737                 print_flag_on_off(get_dma_q,"DMA queue_depth", dma_q);
1738                 bb_ioctl(fd, HDIO_SET_QDMA, (int *)dma_q, "HDIO_SET_QDMA");
1739         }
1740         if (set_nowerr)
1741         {
1742                 print_flag_on_off(get_nowerr,"nowerr", nowerr);
1743                 bb_ioctl(fd, HDIO_SET_NOWERR, (int *)nowerr,"HDIO_SET_NOWERR");
1744         }
1745         if (set_keep)
1746         {
1747                 print_flag_on_off(get_keep,"keep_settings", keep);
1748                 bb_ioctl(fd, HDIO_SET_KEEPSETTINGS, (int *)keep,"HDIO_SET_KEEPSETTINGS");
1749         }
1750 #ifdef HDIO_DRIVE_CMD
1751         if (set_doorlock)
1752         {
1753                 args[0] = doorlock ? WIN_DOORLOCK : WIN_DOORUNLOCK;
1754                 args[2] = 0;
1755                 print_flag_on_off(get_doorlock,"drive doorlock", doorlock);
1756                 bb_ioctl(fd, HDIO_DRIVE_CMD, &args,"HDIO_DRIVE_CMD(doorlock)");
1757                 args[0] = WIN_SETFEATURES;
1758         }
1759         if (set_dkeep)
1760         {
1761                 /* lock/unlock the drive's "feature" settings */
1762                 print_flag_on_off(get_dkeep,"drive keep features", dkeep);
1763                 args[2] = dkeep ? 0x66 : 0xcc;
1764                 bb_ioctl(fd, HDIO_DRIVE_CMD, &args,"HDIO_DRIVE_CMD(keepsettings)");
1765         }
1766         if (set_defects)
1767         {
1768                 args[2] = defects ? 0x04 : 0x84;
1769                 print_flag(get_defects,"drive defect-mgmt", defects);
1770                 bb_ioctl(fd, HDIO_DRIVE_CMD, &args,"HDIO_DRIVE_CMD(defectmgmt)");
1771         }
1772         if (set_prefetch)
1773         {
1774                 args[1] = prefetch;
1775                 args[2] = 0xab;
1776                 print_flag(get_prefetch,"drive prefetch", prefetch);
1777                 bb_ioctl(fd, HDIO_DRIVE_CMD, &args, "HDIO_DRIVE_CMD(setprefetch)");
1778                 args[1] = 0;
1779         }
1780         if (set_xfermode)
1781         {
1782                 args[1] = xfermode_requested;
1783                 args[2] = 3;
1784                 if (get_xfermode)
1785                 {
1786                         print_flag(1,/*" setting */"xfermode"/* to %d"*/, xfermode_requested);
1787                         interpret_xfermode(xfermode_requested);
1788                 }
1789                 bb_ioctl(fd, HDIO_DRIVE_CMD, &args,"HDIO_DRIVE_CMD(setxfermode)");
1790                 args[1] = 0;
1791         }
1792         if (set_lookahead)
1793         {
1794                 args[2] = lookahead ? 0xaa : 0x55;
1795                 print_flag_on_off(get_lookahead,"drive read-lookahead", lookahead);
1796                 bb_ioctl(fd, HDIO_DRIVE_CMD, &args, "HDIO_DRIVE_CMD(setreadahead)");
1797         }
1798         if (set_apmmode)
1799         {
1800                 args[2] = (apmmode == 255) ? 0x85 /* disable */ : 0x05 /* set */; /* feature register */
1801                 args[1] = apmmode; /* sector count register 1-255 */
1802                 if (get_apmmode)
1803                         printf(" setting APM level to %s 0x%02lX (%ld)\n", (apmmode == 255) ? "disabled" : "", apmmode, apmmode);
1804                 bb_ioctl(fd, HDIO_DRIVE_CMD, &args,"HDIO_DRIVE_CMD");
1805                 args[1] = 0;
1806         }
1807         if (set_wcache)
1808         {
1809 #ifdef DO_FLUSHCACHE
1810 #ifndef WIN_FLUSHCACHE
1811 #define WIN_FLUSHCACHE 0xe7
1812 #endif
1813                 static unsigned char flushcache[4] = {WIN_FLUSHCACHE,0,0,0};
1814 #endif /* DO_FLUSHCACHE */
1815                 args[2] = wcache ? 0x02 : 0x82;
1816                 print_flag_on_off(get_wcache,"drive write-caching", wcache);
1817 #ifdef DO_FLUSHCACHE
1818                 if (!wcache)
1819                         bb_ioctl(fd, HDIO_DRIVE_CMD, &flushcache, "HDIO_DRIVE_CMD(flushcache)");
1820 #endif /* DO_FLUSHCACHE */
1821                 bb_ioctl(fd, HDIO_DRIVE_CMD, &args, "HDIO_DRIVE_CMD(setcache)");
1822 #ifdef DO_FLUSHCACHE
1823                 if (!wcache)
1824                         bb_ioctl(fd, HDIO_DRIVE_CMD, &flushcache, "HDIO_DRIVE_CMD(flushcache)");
1825 #endif /* DO_FLUSHCACHE */
1826         }
1827
1828         /* In code below, we do not preserve args[0], but the rest
1829            is preserved, including args[2] */
1830         args[2] = 0;
1831
1832         if (set_standbynow)
1833         {
1834 #ifndef WIN_STANDBYNOW1
1835 #define WIN_STANDBYNOW1 0xE0
1836 #endif
1837 #ifndef WIN_STANDBYNOW2
1838 #define WIN_STANDBYNOW2 0x94
1839 #endif
1840                 if (get_standbynow) printf(" issuing standby command\n");
1841                 args[0] = WIN_STANDBYNOW1;
1842                 bb_ioctl_alt(fd, HDIO_DRIVE_CMD, args, WIN_STANDBYNOW2, "HDIO_DRIVE_CMD(standby)");
1843         }
1844         if (set_sleepnow)
1845         {
1846 #ifndef WIN_SLEEPNOW1
1847 #define WIN_SLEEPNOW1 0xE6
1848 #endif
1849 #ifndef WIN_SLEEPNOW2
1850 #define WIN_SLEEPNOW2 0x99
1851 #endif
1852                 if (get_sleepnow) printf(" issuing sleep command\n");
1853                 args[0] = WIN_SLEEPNOW1;
1854                 bb_ioctl_alt(fd, HDIO_DRIVE_CMD, args, WIN_SLEEPNOW2, "HDIO_DRIVE_CMD(sleep)");
1855         }
1856         if (set_seagate)
1857         {
1858                 args[0] = 0xfb;
1859                 if (get_seagate) printf(" disabling Seagate auto powersaving mode\n");
1860                 bb_ioctl(fd, HDIO_DRIVE_CMD, &args, "HDIO_DRIVE_CMD(seagatepwrsave)");
1861         }
1862         if (set_standby)
1863         {
1864                 args[0] = WIN_SETIDLE1;
1865                 args[1] = standby_requested;
1866                 if (get_standby)
1867                 {
1868                         print_flag(1, /*" setting */"standby"/* to %lu"*/, standby_requested);
1869                         interpret_standby(standby_requested);
1870                 }
1871                 bb_ioctl(fd, HDIO_DRIVE_CMD, &args, "HDIO_DRIVE_CMD(setidle1)");
1872                 args[1] = 0;
1873         }
1874 #else   /* HDIO_DRIVE_CMD */
1875         if (force_operation)
1876         {
1877                 char buf[512];
1878                 flush_buffer_cache(fd);
1879                 if (-1 == read(fd, buf, sizeof(buf)))
1880                         bb_perror_msg("read(%d bytes) failed (rc=%d)", sizeof(buf), -1);
1881         }
1882 #endif  /* HDIO_DRIVE_CMD */
1883
1884         if (!flagcount)
1885                 verbose = 1;
1886
1887         if (verbose || get_mult || get_identity)
1888         {
1889                 multcount = -1;
1890                 if (ioctl(fd, HDIO_GET_MULTCOUNT, &multcount))
1891                 {
1892                         if (verbose || get_mult)
1893                                 bb_perror_msg("HDIO_GET_MULTCOUNT");
1894                 }
1895                 else if (verbose | get_mult)
1896                 {
1897                         printf(fmt, "multcount", multcount);
1898                         on_off(multcount);
1899                 }
1900         }
1901         if (verbose || get_io32bit)
1902         {
1903                 if (!bb_ioctl(fd, HDIO_GET_32BIT, &parm, "HDIO_GET_32BIT"))
1904                 {
1905                         printf(" IO_support\t=%3ld (", parm);
1906                         if (parm == 0)
1907                                 printf("default 16-bit)\n");
1908                         else if (parm == 2)
1909                                 printf("16-bit)\n");
1910                         else if (parm == 1)
1911                                 printf("32-bit)\n");
1912                         else if (parm == 3)
1913                                 printf("32-bit w/sync)\n");
1914                         else if (parm == 8)
1915                                 printf("Request-Queue-Bypass)\n");
1916                         else
1917                                 printf("\?\?\?)\n");
1918                 }
1919         }
1920         if (verbose || get_unmask)
1921         {
1922                 bb_ioctl_on_off(fd, HDIO_GET_UNMASKINTR,(unsigned long *)parm,
1923                                                 "HDIO_GET_UNMASKINTR","unmaskirq");
1924         }
1925
1926
1927 #ifdef CONFIG_FEATURE_HDPARM_HDIO_GETSET_DMA
1928         if (verbose || get_dma) {
1929                 if (!bb_ioctl(fd, HDIO_GET_DMA, &parm, "HDIO_GET_DMA"))
1930                 {
1931                         printf(fmt, "using_dma", parm);
1932                         if (parm == 8)
1933                                 printf(" (DMA-Assisted-PIO)\n");
1934                         else
1935                                 on_off(parm);
1936                 }
1937         }
1938 #endif
1939         if (get_dma_q)
1940         {
1941                 bb_ioctl_on_off (fd, HDIO_GET_QDMA,(unsigned long *)parm,
1942                                                   "HDIO_GET_QDMA","queue_depth");
1943         }
1944         if (verbose || get_keep)
1945         {
1946                 bb_ioctl_on_off (fd, HDIO_GET_KEEPSETTINGS,(unsigned long *)parm,
1947                                                         "HDIO_GET_KEEPSETTINGS","keepsettings");
1948         }
1949
1950         if (get_nowerr)
1951         {
1952                 bb_ioctl_on_off  (fd, HDIO_GET_NOWERR,(unsigned long *)&parm,
1953                                                         "HDIO_GET_NOWERR","nowerr");
1954         }
1955         if (verbose || get_readonly)
1956         {
1957                 bb_ioctl_on_off(fd, BLKROGET,(unsigned long *)parm,
1958                                                   "BLKROGET","readonly");
1959         }
1960         if (verbose || get_readahead)
1961         {
1962                 bb_ioctl_on_off (fd, BLKRAGET, (unsigned long *) parm,
1963                                                         "BLKRAGET","readahead");
1964         }
1965         if (verbose || get_geom)
1966         {
1967                 if (!bb_ioctl(fd, BLKGETSIZE, &parm, "BLKGETSIZE"))
1968                 {
1969                         struct hd_geometry g;
1970
1971                         if (!bb_ioctl(fd, HDIO_GETGEO, &g, "HDIO_GETGEO"))
1972                                 printf(" geometry\t= %u/%u/%u, sectors = %ld, start = %ld\n",
1973                                                 g.cylinders, g.heads, g.sectors, parm, g.start);
1974                 }
1975         }
1976 #ifdef HDIO_DRIVE_CMD
1977         if (get_powermode)
1978         {
1979 #ifndef WIN_CHECKPOWERMODE1
1980 #define WIN_CHECKPOWERMODE1 0xE5
1981 #endif
1982 #ifndef WIN_CHECKPOWERMODE2
1983 #define WIN_CHECKPOWERMODE2 0x98
1984 #endif
1985                 const char *state;
1986
1987                 args[0] = WIN_CHECKPOWERMODE1;
1988                 if (bb_ioctl_alt(fd, HDIO_DRIVE_CMD, args, WIN_CHECKPOWERMODE2, 0))
1989                 {
1990                         if (errno != EIO || args[0] != 0 || args[1] != 0)
1991                                 state = "Unknown";
1992                         else
1993                                 state = "sleeping";
1994                 }
1995                 else
1996                         state = (args[2] == 255) ? "active/idle" : "standby";
1997                 args[1] = args[2] = 0;
1998
1999                 printf(" drive state is:  %s\n", state);
2000         }
2001 #endif
2002 #ifdef CONFIG_FEATURE_HDPARM_HDIO_DRIVE_RESET
2003         if (perform_reset)
2004         {
2005                 bb_ioctl(fd, HDIO_DRIVE_RESET, NULL, "HDIO_DRIVE_RESET");
2006         }
2007 #endif /* CONFIG_FEATURE_HDPARM_HDIO_DRIVE_RESET */
2008 #ifdef CONFIG_FEATURE_HDPARM_HDIO_TRISTATE_HWIF
2009         if (perform_tristate)
2010         {
2011                 args[0] = 0;
2012                 args[1] = tristate;
2013                 bb_ioctl(fd, HDIO_TRISTATE_HWIF, &args, "HDIO_TRISTATE_HWIF");
2014         }
2015 #endif /* CONFIG_FEATURE_HDPARM_HDIO_TRISTATE_HWIF */
2016 #ifdef CONFIG_FEATURE_HDPARM_GET_IDENTITY
2017         if (get_identity)
2018         {
2019                 static struct hd_driveid id;
2020
2021                 if (!ioctl(fd, HDIO_GET_IDENTITY, &id))
2022                 {
2023                         if (multcount != -1)
2024                         {
2025                                 id.multsect = multcount;
2026                                 id.multsect_valid |= 1;
2027                         }
2028                         else
2029                                 id.multsect_valid &= ~1;
2030                         dump_identity(&id);
2031                 }
2032                 else if (errno == -ENOMSG)
2033                         printf(" no identification info available\n");
2034                 else
2035                         bb_perror_msg("HDIO_GET_IDENTITY");
2036         }
2037
2038         if (get_IDentity)
2039         {
2040                 unsigned char args1[4+512]; /* = { ... } will eat 0.5k of rodata! */
2041                 unsigned i;
2042
2043                 memset(args1, 0, sizeof(args1));
2044                 args1[0] = WIN_IDENTIFY;
2045                 args1[3] = 1;
2046                 if (!bb_ioctl_alt(fd, HDIO_DRIVE_CMD, args1, WIN_PIDENTIFY, "HDIO_DRIVE_CMD(identify)")) {
2047                         for (i=0; i<(sizeof args1)/2; i+=2)
2048                                 __le16_to_cpus((uint16_t *)(&args1[i]));
2049                         identify((void *)&args1[4]);
2050                 }
2051         }
2052 #endif
2053 #ifdef CONFIG_FEATURE_HDPARM_HDIO_TRISTATE_HWIF
2054         if (set_busstate)
2055         {
2056                 if (get_busstate)
2057                 {
2058                         print_flag(1, "bus state", busstate);
2059                         bus_state_value(busstate);
2060                 }
2061                 bb_ioctl(fd, HDIO_SET_BUSSTATE, (int *)(unsigned long)busstate, "HDIO_SET_BUSSTATE");
2062         }
2063 #endif
2064 #ifdef CONFIG_FEATURE_HDPARM_HDIO_TRISTATE_HWIF
2065         if (get_busstate)
2066         {
2067                 if (!bb_ioctl(fd, HDIO_GET_BUSSTATE, &parm, "HDIO_GET_BUSSTATE"))
2068                 {
2069                         printf(fmt, "bus state", parm);
2070                         bus_state_value(parm);
2071                 }
2072         }
2073 #endif
2074         if (reread_partn)
2075                 bb_ioctl(fd, BLKRRPART, NULL, "BLKRRPART");
2076
2077
2078         if (do_ctimings)
2079                 do_time(0,fd);          /*time cache  */
2080         if (do_timings)
2081                 do_time(1,fd);          /*time device */
2082         if (do_flush)
2083                 flush_buffer_cache(fd);
2084         close(fd);
2085 }
2086
2087 #ifdef CONFIG_FEATURE_HDPARM_GET_IDENTITY
2088 static int fromhex(unsigned char c)
2089 {
2090         if (c >= 'a' && c <= 'f')
2091                 return 10 + (c - 'a');
2092         if (c >= '0' && c <= '9')
2093                 return (c - '0');
2094         bb_error_msg_and_die("bad char: '%c' 0x%02x", c, c);
2095 }
2096
2097 static void identify_from_stdin(void)
2098 {
2099         unsigned short sbuf[800];
2100         unsigned char  buf[1600], *b = (unsigned char *)buf;
2101         int i, count = read(0, buf, 1280);
2102
2103         if (count != 1280)
2104                 bb_error_msg_and_die("read(%d bytes) failed (rc=%d)", 1280, count);
2105         for (i = 0; count >= 4; ++i)
2106         {
2107                 sbuf[i] = (fromhex(b[0]) << 12) | (fromhex(b[1]) << 8) | (fromhex(b[2]) << 4) | fromhex(b[3]);
2108                 __le16_to_cpus((uint16_t *)(&sbuf[i]));
2109                 b += 5;
2110                 count -= 5;
2111         }
2112         identify(sbuf);
2113 }
2114 #endif
2115
2116 /* busybox specific stuff */
2117 static void parse_opts(unsigned long *get, unsigned long *set, unsigned long *value, int min, int max)
2118 {
2119                 /* noisy is a global var */
2120                 if (get) { /* *get is initialized to 0 */
2121                         *get = noisy;
2122                         noisy = 1;
2123                 }
2124                 if (optarg) {
2125                         *set = 1;
2126                         *value = bb_xgetlarg(optarg, 10, min, max);
2127                 }
2128 }
2129
2130 #ifdef HDIO_DRIVE_CMD
2131 static void parse_opts_v2(int flag, unsigned long *get, unsigned long *set)
2132 {
2133         if (flag) {
2134                 /* noisy is a global var */
2135                 *get = noisy;
2136                 noisy = 1;
2137                 *set = 1;
2138         }
2139 }
2140 #endif
2141
2142 static void parse_opts_v3(int flag, unsigned long *get, unsigned long *set, int *value)
2143 {
2144         if (flag) {
2145                 /* noisy is a global var */
2146                 *get = noisy;
2147                 noisy = 1;
2148                 if (optarg) {
2149                         *set = ((*value = translate_xfermode(optarg)) > -1);
2150                 }
2151         }
2152 }
2153
2154 /*-------------------------------------*/
2155 /* getopt long options */
2156 #if ENABLE_FEATURE_HDPARM_GET_IDENTITY
2157 static const struct option HDPARM_LONG_OPT[] =
2158 {
2159         {"Istdin", 0, NULL, '\256'},
2160         {NULL, 0, NULL, 0}
2161 };
2162 #else
2163 #define HDPARM_LONG_OPT                 NULL
2164 #endif
2165 /*-------------------------------------*/
2166 /* getopt short options */
2167 static const char hdparm_options[]=     "Vvgfqu::n::p:r::m::c::k::a::B:tTh"\
2168         USE_FEATURE_HDPARM_GET_IDENTITY("\256iI")
2169         USE_FEATURE_HDPARM_HDIO_GETSET_DMA("d::")
2170 #ifdef HDIO_DRIVE_CMD
2171                                                                         "S::D::P::X::K::A::L::W::CyYzZ"
2172 #endif
2173         USE_FEATURE_HDPARM_HDIO_UNREGISTER_HWIF("U:")
2174 #ifdef HDIO_GET_QDMA
2175 #ifdef HDIO_SET_QDMA
2176                                                                         "Q:"
2177 #else
2178                                                                         "Q"
2179 #endif
2180 #endif
2181         USE_FEATURE_HDPARM_HDIO_DRIVE_RESET("w")
2182         USE_FEATURE_HDPARM_HDIO_TRISTATE_HWIF("x::b:")
2183         USE_FEATURE_HDPARM_HDIO_SCAN_HWIF("R:");
2184 /*-------------------------------------*/
2185
2186 /* our main() routine: */
2187 int hdparm_main(int argc, char **argv) ATTRIBUTE_NORETURN;
2188 int hdparm_main(int argc, char **argv)
2189 {
2190         int c;
2191
2192         while ((c = getopt_long (argc, argv, hdparm_options, HDPARM_LONG_OPT , NULL)) >= 0) {
2193                 /* When no flags are given (flagcount = 0), -acdgkmnru is assumed. */
2194                 flagcount++;
2195 #if ENABLE_FEATURE_HDPARM_GET_IDENTITY
2196                 if (c == '\256') {
2197                         identify_from_stdin(); /* EXIT */
2198                 }
2199 #endif
2200                 if (c == 'V') {
2201                         printf("%s %s\n",bb_applet_name, VERSION);
2202                         exit(EXIT_SUCCESS);
2203                 }
2204
2205                 verbose |= (c == 'v');
2206                 USE_FEATURE_HDPARM_GET_IDENTITY(get_IDentity = (c == 'I'));
2207                 USE_FEATURE_HDPARM_GET_IDENTITY(get_identity = (c == 'i'));
2208                 get_geom |= (c == 'g');
2209                 do_flush |= (c == 'f');
2210                 if (c == 'q') {
2211                         quiet = 1;
2212                         noisy = 0;
2213                 }
2214                 if (c == 'u') parse_opts(&get_unmask, &set_unmask, &unmask, 0, 1);
2215                 USE_FEATURE_HDPARM_HDIO_GETSET_DMA(if (c == 'd') parse_opts(&get_dma, &set_dma, &dma, 0, 9));
2216                 if (c == 'n') parse_opts(&get_nowerr, &set_nowerr, &nowerr, 0, 1);
2217                 parse_opts_v3((c == 'p'),&noisy_piomode, &set_piomode, &piomode);
2218                 if (c == 'r') parse_opts(&get_readonly, &set_readonly, &readonly, 0, 1);
2219                 if (c == 'm') parse_opts(&get_mult, &set_mult, &mult, 0, INT_MAX /*32*/);
2220                 if (c == 'c') parse_opts(&get_io32bit, &set_io32bit, &io32bit, 0, INT_MAX /*8*/);
2221                 if (c == 'k') parse_opts(&get_keep, &set_keep, &keep, 0, 1);
2222                 if (c == 'a') parse_opts(&get_readahead, &set_readahead, &Xreadahead, 0, INT_MAX);
2223                 if (c == 'B') parse_opts(&get_apmmode, &set_apmmode, &apmmode, 1, 255);
2224                 do_flush |= do_timings |= (c == 't');
2225                 do_flush |= do_ctimings |= (c == 'T');
2226 #ifdef HDIO_DRIVE_CMD
2227                 if (c == 'S') parse_opts(&get_standby, &set_standby, &standby_requested, 0, INT_MAX);
2228                 if (c == 'D') parse_opts(&get_defects, &set_defects, &defects, 0, INT_MAX);
2229                 if (c == 'P') parse_opts(&get_prefetch, &set_prefetch, &prefetch, 0, INT_MAX);
2230                 parse_opts_v3((c == 'X'), &get_xfermode, &set_xfermode, &xfermode_requested);
2231                 if (c == 'K') parse_opts(&get_dkeep, &set_dkeep, &prefetch, 0, 1);
2232                 if (c == 'A') parse_opts(&get_lookahead, &set_lookahead, &lookahead, 0, 1);
2233                 if (c == 'L') parse_opts(&get_doorlock, &set_doorlock, &doorlock, 0, 1);
2234                 if (c == 'W') parse_opts(&get_wcache, &set_wcache, &wcache, 0, 1);
2235                 parse_opts_v3((c == 'C'), &get_powermode, NULL, NULL);
2236                 parse_opts_v2((c == 'y'), &get_standbynow, &set_standbynow);
2237                 parse_opts_v2((c == 'Y'), &get_sleepnow, &set_sleepnow);
2238                 reread_partn |= (c == 'z');
2239                 parse_opts_v2((c == 'Z'), &get_seagate, &set_seagate);
2240 #endif
2241                 USE_FEATURE_HDPARM_HDIO_UNREGISTER_HWIF(if (c == 'U') parse_opts(NULL, &unregister_hwif, &hwif, 0, INT_MAX));
2242 #ifdef HDIO_GET_QDMA
2243                 if (c == 'Q') {
2244 #ifdef HDIO_SET_QDMA
2245                         parse_opts(&get_dma_q, &set_dma_q, &dma_q, 0, INT_MAX);
2246 #else
2247                         parse_opts(&get_dma_q, NULL, NULL, 0, 0);
2248 #endif
2249                 }
2250 #endif
2251                 USE_FEATURE_HDPARM_HDIO_DRIVE_RESET( perform_reset = (c == 'r'));
2252                 USE_FEATURE_HDPARM_HDIO_TRISTATE_HWIF(if (c == 'x') parse_opts(NULL, &perform_tristate, &tristate, 0, 1));
2253                 USE_FEATURE_HDPARM_HDIO_TRISTATE_HWIF(if (c == 'b') parse_opts(&get_busstate, &set_busstate, &busstate, 0, 2));
2254 #if ENABLE_FEATURE_HDPARM_HDIO_SCAN_HWIF
2255                 if (c == 'R') {
2256                         parse_opts(NULL, &scan_hwif, &hwif_data, 0, INT_MAX);
2257                         hwif_ctrl =  bb_xgetlarg((argv[optind]) ? argv[optind] : "", 10, 0, INT_MAX);
2258                         hwif_irq  =  bb_xgetlarg((argv[optind+1]) ? argv[optind+1] : "", 10, 0, INT_MAX);
2259                         /* Move past the 2 additional arguments */
2260                         argv += 2;
2261                         argc -= 2;
2262                 }
2263 #endif
2264         }
2265
2266         argc -= optind;
2267         argv += optind;
2268
2269         if (argc < 1) {
2270                 bb_show_usage();
2271         }
2272
2273         while (argc--) {
2274                 process_dev(*argv);
2275                 argv++;
2276         }
2277         exit(EXIT_SUCCESS);
2278 }