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 "busybox.h"
  29 #include <linux/types.h>
  30 #include <linux/hdreg.h>
  31 #include <linux/major.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 revision 4",        /* 0x0001       */
 267         "ATA-1 published, ANSI X3.221-1994",            /* 0x0002       */
 268         "ATA-1 X3T9.2 781D revision 4",                 /* 0x0003       */
 269         "ATA-2 published, ANSI X3.279-1996",            /* 0x0004       */
 270         "ATA-2 X3T10 948D prior to revision 2k",        /* 0x0005       */
 271         "ATA-3 X3T10 2008D revision 1",                 /* 0x0006       */
 272         "ATA-2 X3T10 948D revision 2k",                 /* 0x0007       */
 273         "ATA-3 X3T10 2008D revision 0",                 /* 0x0008       */
 274         "ATA-2 X3T10 948D revision 3",                  /* 0x0009       */
 275         "ATA-3 published, ANSI X3.298-199x",            /* 0x000a       */
 276         "ATA-3 X3T10 2008D revision 6",                 /* 0x000b       */
 277         "ATA-3 X3T13 2008D revision 7 and 7a",          /* 0x000c       */
 278         "ATA/ATAPI-4 X3T13 1153D revision 6",           /* 0x000d       */
 279         "ATA/ATAPI-4 T13 1153D revision 13",            /* 0x000e       */
 280         "ATA/ATAPI-4 X3T13 1153D revision 7",           /* 0x000f       */
 281         "ATA/ATAPI-4 T13 1153D revision 18",            /* 0x0010       */
 282         "ATA/ATAPI-4 T13 1153D revision 15",            /* 0x0011       */
 283         "ATA/ATAPI-4 published, ANSI INCITS 317-1998",  /* 0x0012       */
 284         "ATA/ATAPI-5 T13 1321D revision 3",
 285         "ATA/ATAPI-4 T13 1153D revision 14",            /* 0x0014       */
 286         "ATA/ATAPI-5 T13 1321D revision 1",             /* 0x0015       */
 287         "ATA/ATAPI-5 published, ANSI INCITS 340-2000",  /* 0x0016       */
 288         "ATA/ATAPI-4 T13 1153D revision 17",            /* 0x0017       */
 289         "ATA/ATAPI-6 T13 1410D revision 0",             /* 0x0018       */
 290         "ATA/ATAPI-6 T13 1410D revision 3a",            /* 0x0019       */
 291         "ATA/ATAPI-7 T13 1532D revision 1",             /* 0x001a       */
 292         "ATA/ATAPI-6 T13 1410D revision 2",             /* 0x001b       */
 293         "ATA/ATAPI-6 T13 1410D revision 1",             /* 0x001c       */
 294         "ATA/ATAPI-7 published, ANSI INCITS 397-2005",  /* 0x001d       */
 295         "ATA/ATAPI-7 T13 1532D revision 0",             /* 0x001e       */
 296         "Reserved"                                      /* 0x001f       */
 297         "Reserved"                                      /* 0x0020       */
 298         "ATA/ATAPI-7 T13 1532D revision 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 command",              /* word 83 bit 13 */
 372         "Mandatory FLUSH CACHE command ",       /* 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 #endif
 404
 405
 406 /* words 85-87: cmds/feats enabled */
 407 /* use cmd_feat_str[] to display what commands and features have
 408  * been enabled with words 85-87
 409  */
 410
 411 /* words 89, 90, SECU ERASE TIME */
 412 #define ERASE_BITS              0x00ff
 413
 414 /* word 92: master password revision */
 415 /* NOVAL_0 or  NOVAL_1 means no support for master password revision */
 416
 417 /* word 93: hw reset result */
 418 #define CBLID                   0x2000  /* CBLID status */
 419 #define RST0                    0x0001  /* 1=reset to device #0 */
 420 #define DEV_DET                 0x0006  /* how device num determined */
 421 #define JUMPER_VAL              0x0002  /* device num determined by jumper */
 422 #define CSEL_VAL                0x0004  /* device num determined by CSEL_VAL */
 423
 424 /* word 127: removable media status notification feature set support */
 425 #define RM_STAT_BITS            0x0003
 426 #define RM_STAT_SUP             0x0001
 427
 428 /* word 128: security */
 429 #define SECU_ENABLED    0x0002
 430 #define SECU_LEVEL              0x0010
 431 #define NUM_SECU_STR    6
 432 #ifdef CONFIG_FEATURE_HDPARM_GET_IDENTITY
 433 static const char * const secu_str[] = {
 434         "supported",                    /* word 128, bit 0 */
 435         "enabled",                      /* word 128, bit 1 */
 436         "locked",                       /* word 128, bit 2 */
 437         "frozen",                       /* word 128, bit 3 */
 438         "expired: security count",      /* word 128, bit 4 */
 439         "supported: enhanced erase"     /* word 128, bit 5 */
 440 };
 441 #endif
 442
 443 /* word 160: CFA power mode */
 444 #define VALID_W160              0x8000  /* 1=word valid */
 445 #define PWR_MODE_REQ            0x2000  /* 1=CFA power mode req'd by some cmds*/
 446 #define PWR_MODE_OFF            0x1000  /* 1=CFA power moded disabled */
 447 #define MAX_AMPS                0x0fff  /* value = max current in ma */
 448
 449 /* word 255: integrity */
 450 #define SIG                     0x00ff  /* signature location */
 451 #define SIG_VAL                 0x00A5  /* signature value */
 452
 453 #define VERSION "v5.4"
 454
 455 #define TIMING_MB               64
 456 #define TIMING_BUF_MB           1
 457 #define TIMING_BUF_BYTES        (TIMING_BUF_MB * 1024 * 1024)
 458 #define TIMING_BUF_COUNT        (timing_MB / TIMING_BUF_MB)
 459 #define BUFCACHE_FACTOR         2
 460
 461 #undef DO_FLUSHCACHE            /* under construction: force cache flush on -W0 */
 462
 463 /* Busybox messages and functions */
 464
 465 static const char bb_msg_shared_mem[] = "could not %s sharedmem buf";
 466 static const char bb_msg_op_not_supp[] = " operation not supported on %s disks";
 467
 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
 485 static void if_printf(unsigned long i, char *fmt, ... )
 486 {
 487                 va_list ap;
 488                 va_start(ap, fmt);
 489                 if (i)
 490                         vprintf(fmt, ap);
 491                 va_end(ap);
 492 }
 493
 494 static void on_off (unsigned int value);
 495
 496 static void if_printf_on_off(unsigned long get_arg,const char *fmt, unsigned long arg)
 497 {
 498         if (get_arg)
 499         {
 500                 printf(fmt, arg);
 501                 on_off(arg);
 502         }
 503 }
 504
 505 static void bb_ioctl_on_off(int fd, int request, void *argp, const char *string,
 506                                                          const char * fmt)
 507 {
 508         if (ioctl (fd, request, &argp) != 0)
 509                 bb_perror_msg(" %s", string);
 510         else
 511         {
 512                 printf(fmt, (unsigned long) argp);
 513                 on_off((unsigned long) argp);
 514         }
 515 }
 516
 517 #ifdef CONFIG_FEATURE_HDPARM_GET_IDENTITY
 518 static void if_else_printf(unsigned long i, char *fmt1, char *fmt2, ... )
 519 {
 520                 va_list ap;
 521                 va_start(ap, fmt2);
 522                 if (i)
 523                         vprintf(fmt1, ap);
 524                 else
 525                         vprintf(fmt2, ap);
 526                 va_end(ap);
 527 }
 528
 529 static void print_ascii(uint16_t *p, uint8_t length);
 530
 531 static void xprint_ascii(uint16_t *val ,int i, char * string, int n)
 532 {
 533         if(val[i])
 534         {
 535                 printf("\t%-20s",string);
 536                 print_ascii(&val[i], n);
 537         }
 538 }
 539
 540 static void if_strcat(unsigned long test, char *modes, char *string)
 541 {
 542         if (test)
 543                 strcat(modes,string);
 544 }
 545 #endif
 546
 547 static void sync_and_sleep(int i)
 548 {
 549         sync();
 550         sleep(i);
 551 }
 552
 553 static uint16_t check_if_min_and_set_val(uint16_t a, uint16_t b)
 554 {
 555         if( a < b)
 556                 a = b;
 557         return a;
 558 }
 559
 560 static uint16_t check_if_maj_and_set_val(uint16_t a, uint16_t b)
 561 {
 562         if( a > b)
 563                 a = b;
 564         return a;
 565 }
 566
 567 static unsigned long int set_flag(char *p, char max)
 568 {
 569         if (*p >= '0' && *p <=  max )
 570                 return 1;
 571         return 0;
 572 }
 573
 574 /* end of  busybox specific stuff */
 575
 576 #ifdef CONFIG_FEATURE_HDPARM_GET_IDENTITY
 577 static uint8_t mode_loop(uint16_t mode_sup, uint16_t mode_sel, int cc, uint8_t *have_mode)
 578 {
 579         uint16_t ii;
 580         uint8_t err_dma = 0;
 581
 582         for(ii = 0; ii <= MODE_MAX; ii++)
 583         {
 584                 if(mode_sel & 0x0001)
 585                 {
 586                         printf("*%cdma%u ",cc,ii);
 587                         if(*have_mode)
 588                                 err_dma = 1;
 589                         *have_mode = 1;
 590                 }
 591                 else if(mode_sup & 0x0001)
 592                         printf("%cdma%u ",cc,ii);
 593
 594                 mode_sup >>=1;
 595                 mode_sel >>=1;
 596         }
 597         return err_dma;
 598 }
 599
 600 static void print_ascii(uint16_t *p, uint8_t length) {
 601         uint8_t ii;
 602         char cl;
 603
 604         /* find first non-space & print it */
 605         for(ii = 0; ii< length; ii++)
 606         {
 607                 if(((char) 0x00ff&((*p)>>8)) != ' ')
 608                         break;
 609                 if((cl = (char) 0x00ff&(*p)) != ' ')
 610                 {
 611                         if_printf((cl != '\0'),"%c",cl);
 612                         p++;
 613                         ii++;
 614                         break;
 615                 }
 616                 p++;
 617         }
 618         /* print the rest */
 619         for(; ii< length; ii++)
 620         {
 621                 if(!(*p))
 622                         break; /* some older devices have NULLs */
 623                 printf("%c%c",(char)0x00ff&((*p)>>8),(char)(*p)&0x00ff);
 624                 p++;
 625         }
 626         printf("\n");
 627 }
 628
 629 /* identify() is the only extern function used across two source files.  The
 630    others, though, were declared in hdparm.c with global scope; since other
 631    functions in that file have static (file) scope, I assume the difference is
 632    intentional. */
 633 static void identify (uint16_t *id_supplied, const char *devname)
 634 {
 635
 636         char *id_file = NULL;
 637         FILE *fl;
 638         uint16_t val[256], ii, jj, kk;
 639         uint16_t like_std = 1, std = 0, min_std = 0xffff;
 640         uint16_t dev = NO_DEV, eqpt = NO_DEV;
 641         uint8_t  have_mode = 0, err_dma = 0;
 642         uint8_t  chksum = 0;
 643         uint32_t ll, mm, nn, oo;
 644         uint64_t bbbig; /* (:) */
 645
 646         if (id_supplied)
 647         {
 648 #if __BYTE_ORDER == __BIG_ENDIAN
 649                 swab(id_supplied, val, sizeof(val));
 650 #else
 651                 memcpy(val, id_supplied, sizeof(val));
 652 #endif
 653         }
 654         else
 655         {
 656                 /* open the file, read in all the info and close it */
 657                 if (devname == NULL)
 658                         fl = stdin;
 659                 else {
 660                         id_file = bb_xasprintf("/proc/ide/%s/identify", devname);
 661                         fl = bb_xfopen(id_file, "r");
 662                 }
 663                 /* calculate checksum over all bytes */
 664                 for(ii = GEN_CONFIG; ii<=INTEGRITY; ii++)
 665                 {
 666                         unsigned int scratch;
 667                         if(1 != fscanf(fl,"%04x",&scratch))
 668                                 break;
 669                         val[ii] = (uint16_t)scratch;
 670                         chksum += val[ii] + (val[ii] >> 8);
 671                 }
 672                 bb_fclose_nonstdin(fl);
 673                 if (ENABLE_FEATURE_CLEAN_UP) free(id_file);
 674                 if(ii < (INTEGRITY+1))
 675                         bb_error_msg_and_die("Input file wrong format or length");
 676         }
 677         chksum &= 0xff;
 678
 679         /* check if we recognise the device type */
 680         printf("\n");
 681         if(!(val[GEN_CONFIG] & NOT_ATA))
 682         {
 683                 dev = ATA_DEV;
 684                 printf("ATA device, with ");
 685         }
 686         else if(val[GEN_CONFIG]==CFA_SUPPORT_VAL)
 687         {
 688                 dev = ATA_DEV;
 689                 like_std = 4;
 690                 printf("CompactFlash ATA device, with ");
 691         }
 692         else if(!(val[GEN_CONFIG] & NOT_ATAPI))
 693         {
 694                 dev = ATAPI_DEV;
 695                 eqpt = (val[GEN_CONFIG] & EQPT_TYPE) >> SHIFT_EQPT;
 696                 printf("ATAPI %s, with ", pkt_str[eqpt]);
 697                 like_std = 3;
 698         }
 699         else
 700                 /*"Unknown device type:\n\tbits 15&14 of general configuration word 0 both set to 1.\n"*/
 701                 bb_error_msg_and_die("Unknown device type");
 702
 703         if_printf(!(val[GEN_CONFIG] & MEDIA_REMOVABLE),"non-");
 704         printf("removable media\n");
 705
 706         /* Info from the specific configuration word says whether or not the
 707          * ID command completed correctly.  It is only defined, however in
 708          * ATA/ATAPI-5 & 6; it is reserved (value theoretically 0) in prior
 709          * standards.  Since the values allowed for this word are extremely
 710          * specific, it should be safe to check it now, even though we don't
 711          * know yet what standard this device is using.
 712          */
 713         if((val[CONFIG]==STBY_NID_VAL) || (val[CONFIG]==STBY_ID_VAL) ||
 714            (val[CONFIG]==PWRD_NID_VAL) || (val[CONFIG]==PWRD_ID_VAL) )
 715         {
 716                 like_std = 5;
 717                 if_printf(((val[CONFIG]==STBY_NID_VAL) || (val[CONFIG]==STBY_ID_VAL)),
 718                                         "powers-up in standby; SET FEATURES subcmd spins-up.\n");
 719                 if_printf((((val[CONFIG]==STBY_NID_VAL) || (val[CONFIG]==PWRD_NID_VAL)) && (val[GEN_CONFIG] & INCOMPLETE)),
 720                                         "\n\tWARNING: ID response incomplete.\n\tFollowing data may be incorrect.\n\n");
 721         }
 722
 723         /* output the model and serial numbers and the fw revision */
 724         xprint_ascii(val, START_MODEL,  "Model Number:",        LENGTH_MODEL);
 725         xprint_ascii(val, START_SERIAL, "Serial Number:",       LENGTH_SERIAL);
 726         xprint_ascii(val, START_FW_REV, "Firmware Revision:",   LENGTH_FW_REV);
 727         xprint_ascii(val, START_MEDIA,  "Media Serial Num:",    LENGTH_MEDIA);
 728         xprint_ascii(val, START_MANUF,  "Media Manufacturer:",  LENGTH_MANUF);
 729
 730         /* major & minor standards version number (Note: these words were not
 731          * defined until ATA-3 & the CDROM std uses different words.) */
 732         printf("Standards:");
 733         if(eqpt != CDROM)
 734         {
 735                 if(val[MINOR] && (val[MINOR] <= MINOR_MAX))
 736                 {
 737                         like_std=check_if_min_and_set_val(like_std, 3);
 738                         std = actual_ver[val[MINOR]];
 739                         if_printf(std,"\n\tUsed: %s ",minor_str[val[MINOR]]);
 740
 741                 }
 742                 /* looks like when they up-issue the std, they obsolete one;
 743                  * thus, only the newest 4 issues need be supported. (That's
 744                  * what "kk" and "min_std" are all about.) */
 745                 if(val[MAJOR] && (val[MAJOR] !=NOVAL_1))
 746                 {
 747                         printf("\n\tSupported: ");
 748                         jj = val[MAJOR] << 1;
 749                         kk = like_std >4 ? like_std-4: 0;
 750                         for(ii = 14; (ii >0)&&(ii>kk); ii--)
 751                         {
 752                                 if(jj & 0x8000)
 753                                 {
 754                                         printf("%u ", ii);
 755                                         if(like_std < ii)
 756                                         {
 757                                                 like_std = ii;
 758                                                 kk = like_std >4 ? like_std-4: 0;
 759                                         }
 760                                         min_std=check_if_maj_and_set_val(min_std, ii);
 761                                 }
 762                                 jj <<= 1;
 763                         }
 764                         like_std=check_if_min_and_set_val(like_std, 3);
 765                 }
 766                 /* Figure out what standard the device is using if it hasn't told
 767                  * us.  If we know the std, check if the device is using any of
 768                  * the words from the next level up.  It happens.
 769                  */
 770                 like_std=check_if_min_and_set_val(like_std, std);
 771
 772                 if(((std == 5) || (!std && (like_std < 6))) &&
 773                         ((((val[CMDS_SUPP_1] & VALID) == VALID_VAL) &&
 774                         ((      val[CMDS_SUPP_1] & CMDS_W83) > 0x00ff)) ||
 775                         (((     val[CMDS_SUPP_2] & VALID) == VALID_VAL) &&
 776                         (       val[CMDS_SUPP_2] & CMDS_W84) ) ) )
 777                 {
 778                         like_std = 6;
 779                 }
 780                 else if(((std == 4) || (!std && (like_std < 5))) &&
 781                         ((((val[INTEGRITY]      & SIG) == SIG_VAL) && !chksum) ||
 782                         ((      val[HWRST_RSLT] & VALID) == VALID_VAL) ||
 783                         (((     val[CMDS_SUPP_1] & VALID) == VALID_VAL) &&
 784                         ((      val[CMDS_SUPP_1] & CMDS_W83) > 0x001f)) ) )
 785                 {
 786                         like_std = 5;
 787                 }
 788                 else if(((std == 3) || (!std && (like_std < 4))) &&
 789                                 ((((val[CMDS_SUPP_1] & VALID) == VALID_VAL) &&
 790                                 (((     val[CMDS_SUPP_1] & CMDS_W83) > 0x0000) ||
 791                                 ((      val[CMDS_SUPP_0] & CMDS_W82) > 0x000f))) ||
 792                                 ((      val[CAPAB_1] & VALID) == VALID_VAL) ||
 793                                 ((      val[WHATS_VALID] & OK_W88) && val[ULTRA_DMA]) ||
 794                                 ((      val[RM_STAT] & RM_STAT_BITS) == RM_STAT_SUP) ) )
 795                 {
 796                         like_std = 4;
 797                 }
 798                 else if(((std == 2) || (!std && (like_std < 3))) &&
 799                            ((val[CMDS_SUPP_1] & VALID) == VALID_VAL) )
 800                 {
 801                         like_std = 3;
 802                 }
 803                 else if(((std == 1) || (!std && (like_std < 2))) &&
 804                                 ((val[CAPAB_0] & (IORDY_SUP | IORDY_OFF)) ||
 805                                 (val[WHATS_VALID] & OK_W64_70)) )
 806                 {
 807                         like_std = 2;
 808                 }
 809                 if(!std)
 810                         printf("\n\tLikely used: %u\n",like_std);
 811                 else if(like_std > std)
 812                         printf("& some of %u\n",like_std);
 813                 else
 814                         printf("\n");
 815         }
 816         else
 817         {
 818                 /* TBD: do CDROM stuff more thoroughly.  For now... */
 819                 kk = 0;
 820                 if(val[CDR_MINOR] == 9)
 821                 {
 822                         kk = 1;
 823                         printf("\n\tUsed: ATAPI for CD-ROMs, SFF-8020i, r2.5");
 824                 }
 825                 if(val[CDR_MAJOR] && (val[CDR_MAJOR] !=NOVAL_1))
 826                 {
 827                         kk = 1;
 828                         printf("\n\tSupported: CD-ROM ATAPI");
 829                         jj = val[CDR_MAJOR] >> 1;
 830                         for(ii = 1; ii <15; ii++)
 831                         {
 832                                 if_printf((jj & 0x0001),"-%u ", ii);
 833                                 jj >>= 1;
 834                         }
 835                 }
 836                 if_else_printf((!kk),"\n\tLikely used CD-ROM ATAPI-1\n","\n");
 837                 /* the cdrom stuff is more like ATA-2 than anything else, so: */
 838                 like_std = 2;
 839         }
 840
 841         if(min_std == 0xffff)
 842                 min_std = like_std > 4 ? like_std - 3 : 1;
 843
 844         printf("Configuration:\n");
 845         /* more info from the general configuration word */
 846         if((eqpt != CDROM) && (like_std == 1))
 847         {
 848                 jj = val[GEN_CONFIG] >> 1;
 849                 for(ii = 1; ii < 15; ii++)
 850                 {
 851                         if_printf((jj & 0x0001),"\t%s\n",ata1_cfg_str[ii]);
 852                         jj >>=1;
 853                 }
 854         }
 855         if(dev == ATAPI_DEV)
 856         {
 857                 printf("\tDRQ response: "); /* Data Request (DRQ) */
 858                 switch(val[GEN_CONFIG] & DRQ_RESPONSE_TIME)
 859                 {
 860                         case DRQ_3MS_VAL :
 861                                 printf("3ms.\n");
 862                                 break;
 863                         case DRQ_INTR_VAL :
 864                                 printf("<=10ms with INTRQ\n");
 865                                 break;
 866                         case DRQ_50US_VAL :
 867                                 printf("50us.\n");
 868                                 break;
 869                         default :
 870                                 printf("unknown.\n");
 871                                 break;
 872                 }
 873                 printf("\tPacket size: ");
 874                 switch(val[GEN_CONFIG] & PKT_SIZE_SUPPORTED)
 875                 {
 876                         case PKT_SIZE_12_VAL :
 877                                 printf("12 bytes\n");
 878                                 break;
 879                         case PKT_SIZE_16_VAL :
 880                                 printf("16 bytes\n");
 881                                 break;
 882                         default :
 883                                 printf("Unknown\n");
 884                                 break;
 885                 }
 886         }
 887         else
 888         {
 889                 /* addressing...CHS? See section 6.2 of ATA specs 4 or 5 */
 890                 ll = (uint32_t)val[LBA_SECTS_MSB] << 16 | val[LBA_SECTS_LSB];
 891                 mm = 0; bbbig = 0;
 892                 if ( (ll > 0x00FBFC10) && (!val[LCYLS]))
 893                         printf("\tCHS addressing not supported\n");
 894                 else
 895                 {
 896                         jj = val[WHATS_VALID] & OK_W54_58;
 897                         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",
 898                                         val[LCYLS],jj?val[LCYLS_CUR]:0, val[LHEADS],jj?val[LHEADS_CUR]:0, val[LSECTS],jj?val[LSECTS_CUR]:0);
 899
 900                         if_printf(((min_std == 1) && (val[TRACK_BYTES] || val[SECT_BYTES])),
 901                                                 "\tbytes/track: %u\tbytes/sector: %u\n",val[TRACK_BYTES], val[SECT_BYTES]);
 902
 903                         if(jj)
 904                         {
 905                                 mm = (uint32_t)val[CAPACITY_MSB] << 16 | val[CAPACITY_LSB];
 906                                 if(like_std < 3)
 907                                 {
 908                                          /* check Endian of capacity bytes */
 909                                         nn = val[LCYLS_CUR] * val[LHEADS_CUR] * val[LSECTS_CUR];
 910                                         oo = (uint32_t)val[CAPACITY_LSB] << 16 | val[CAPACITY_MSB];
 911                                         if(abs(mm - nn) > abs(oo - nn))
 912                                                 mm = oo;
 913                                 }
 914                                 printf("\tCHS current addressable sectors:%11u\n",mm);
 915                         }
 916                 }
 917                 /* LBA addressing */
 918                 printf("\tLBA    user addressable sectors:%11u\n",ll);
 919                 if( ((val[CMDS_SUPP_1] & VALID) == VALID_VAL) &&
 920                      (val[CMDS_SUPP_1] & SUPPORT_48_BIT) )
 921                 {
 922                         bbbig = (uint64_t)val[LBA_64_MSB]       << 48 |
 923                                 (uint64_t)val[LBA_48_MSB]       << 32 |
 924                                 (uint64_t)val[LBA_MID]  << 16 |
 925                                         val[LBA_LSB] ;
 926                         printf("\tLBA48  user addressable sectors:%11llu\n",bbbig);
 927                 }
 928
 929                 if (!bbbig)
 930                         bbbig = (uint64_t)(ll>mm ? ll : mm); /* # 512 byte blocks */
 931                 printf("\tdevice size with M = 1024*1024: %11llu MBytes\n",bbbig>>11);
 932                 bbbig = (bbbig<<9)/1000000;
 933                 printf("\tdevice size with M = 1000*1000: %11llu MBytes ",bbbig);
 934
 935                 if_else_printf((bbbig > 1000),"(%llu GB)\n","\n",bbbig/1000);
 936
 937         }
 938
 939         /* hw support of commands (capabilities) */
 940         printf("Capabilities:\n\t");
 941
 942         if(dev == ATAPI_DEV)
 943         {
 944                 if(eqpt != CDROM)
 945                         if_printf((val[CAPAB_0] & CMD_Q_SUP),"Cmd queuing, ");
 946
 947                 if_printf((val[CAPAB_0] & OVLP_SUP),"Cmd overlap, ");
 948         }
 949         if_printf((val[CAPAB_0] & LBA_SUP),"LBA, ");
 950
 951         if(like_std != 1)
 952         {
 953                 printf("IORDY");
 954                 if_printf((!(val[CAPAB_0] & IORDY_SUP)),"(may be)");
 955                 if_else_printf((val[CAPAB_0] & IORDY_OFF),"(can","(cannot");
 956                 printf(" be disabled)\n");
 957         }
 958         else
 959                 printf("no IORDY\n");
 960
 961         if((like_std == 1) && val[BUF_TYPE])
 962         {
 963                 kk = val[BUF_TYPE];
 964                 printf("\tBuffer type: %04x: ",kk);
 965                 if_else_printf((kk < 2),"single port, single-sector","dual port, multi-sector");
 966                 if_printf((kk > 2)," with read caching ability");
 967                 printf("\n");
 968         }
 969         jj = 0;
 970         if((min_std == 1) && (val[BUFFER__SIZE] && (val[BUFFER__SIZE] != NOVAL_1)))
 971         {
 972                 printf("\tBuffer size: %.1fkB",(float)val[BUFFER__SIZE]/2);
 973                 jj = 1;
 974         }
 975         if((min_std < 4) && (val[RW_LONG]))
 976         {
 977                 printf("\tbytes avail on r/w long: %u",val[RW_LONG]);
 978                 jj = 1;
 979         }
 980         if((eqpt != CDROM) && (like_std > 3))
 981         {
 982                 printf("\tQueue depth: %u",(val[QUEUE_DEPTH] & DEPTH_BITS)+1);
 983                 jj = 1;
 984         }
 985         if_printf(jj,"\n");
 986
 987         if(dev == ATA_DEV)
 988         {
 989                 if(like_std == 1)
 990                         printf("\tCan%s perform double-word IO\n",(!val[DWORD_IO]) ?"not":"");
 991                 else
 992                 {
 993                         printf("\tStandby timer values: spec'd by ");
 994                         if_else_printf((val[CAPAB_0] & STD_STBY),"Standard","Vendor");
 995                         if((like_std > 3) && ((val[CAPAB_1] & VALID) == VALID_VAL))
 996                                 printf(", %s device specific minimum\n",(val[CAPAB_1] & MIN_STANDBY_TIMER)?"with":"no");
 997                         else
 998                           printf("\n");
 999                 }
1000                 printf("\tR/W multiple sector transfer: ");
1001                 if((like_std < 3) && !(val[SECTOR_XFER_MAX] & SECTOR_XFER))
1002                         printf("not supported\n");
1003                 else
1004                 {
1005                         printf("Max = %u\tCurrent = ",val[SECTOR_XFER_MAX] & SECTOR_XFER);
1006                         if_else_printf((val[SECTOR_XFER_CUR] & MULTIPLE_SETTING_VALID),
1007                                                         "%u\n","?\n",val[SECTOR_XFER_CUR] & SECTOR_XFER);
1008                 }
1009                 if((like_std > 3) && (val[CMDS_SUPP_1] & 0x0008))
1010                 {
1011                         /* We print out elsewhere whether the APM feature is enabled or
1012                            not.  If it's not enabled, let's not repeat the info; just print
1013                            nothing here. */
1014                         printf("\tAdvancedPM level: ");
1015                         if ( (val[ADV_PWR] & 0xFF00) == 0x4000 )
1016                         {
1017                                 uint8_t apm_level = val[ADV_PWR] & 0x00FF;
1018                                 printf("%u (0x%x)\n", apm_level, apm_level);
1019                         }
1020                         else
1021                                 printf("unknown setting (0x%04x)\n", val[ADV_PWR]);
1022                 }
1023                 if(like_std > 5)
1024                 {
1025                         if_printf(val[ACOUSTIC],"\tRecommended acoustic management value: %u, current value: %u\n",
1026                                                                         (val[ACOUSTIC] >> 8) & 0x00ff, val[ACOUSTIC] & 0x00ff);
1027                 }
1028         }
1029         else
1030         {
1031                  /* ATAPI */
1032                 if(eqpt != CDROM)
1033                         if_printf((val[CAPAB_0] & SWRST_REQ),"\tATA sw reset required\n");
1034
1035                 if(val[PKT_REL] || val[SVC_NBSY])
1036                 {
1037                         printf("\tOverlap support:");
1038                         if_printf(val[PKT_REL]," %uus to release bus.",val[PKT_REL]);
1039                         if_printf(val[SVC_NBSY]," %uus to clear BSY after SERVICE cmd.",val[SVC_NBSY]);
1040                         printf("\n");
1041                 }
1042         }
1043
1044         /* DMA stuff. Check that only one DMA mode is selected. */
1045         printf("\tDMA: ");
1046         if(!(val[CAPAB_0] & DMA_SUP))
1047                 printf("not supported\n");
1048         else
1049         {
1050                 if_printf((val[DMA_MODE] && !val[SINGLE_DMA] && !val[MULTI_DMA]),
1051                                         " sdma%u\n",(val[DMA_MODE] & MODE) >> 8);
1052                 if(val[SINGLE_DMA])
1053                 {
1054                         jj = val[SINGLE_DMA];
1055                         kk = val[SINGLE_DMA] >> 8;
1056                         err_dma += mode_loop(jj,kk,'s',&have_mode);
1057                 }
1058                 if(val[MULTI_DMA])
1059                 {
1060                         jj = val[MULTI_DMA];
1061                         kk = val[MULTI_DMA] >> 8;
1062                         err_dma += mode_loop(jj,kk,'m',&have_mode);
1063                 }
1064                 if((val[WHATS_VALID] & OK_W88) && val[ULTRA_DMA])
1065                 {
1066                         jj = val[ULTRA_DMA];
1067                         kk = val[ULTRA_DMA] >> 8;
1068                         err_dma += mode_loop(jj,kk,'u',&have_mode);
1069                 }
1070                 if_printf((err_dma || !have_mode),"(?)");
1071                 printf("\n");
1072
1073                 if_printf(((dev == ATAPI_DEV) && (eqpt != CDROM) && (val[CAPAB_0] & DMA_IL_SUP)),
1074                                         "\t     Interleaved DMA support\n");
1075
1076                 if((val[WHATS_VALID] & OK_W64_70) &&
1077                    (val[DMA_TIME_MIN] || val[DMA_TIME_NORM]))
1078                 {
1079                         printf("\t     Cycle time:");
1080                         if_printf(val[DMA_TIME_MIN]," min=%uns",val[DMA_TIME_MIN]);
1081                         if_printf(val[DMA_TIME_NORM]," recommended=%uns",val[DMA_TIME_NORM]);
1082                         printf("\n");
1083                 }
1084         }
1085
1086         /* Programmed IO stuff */
1087         printf("\tPIO: ");
1088         /* If a drive supports mode n (e.g. 3), it also supports all modes less
1089          * than n (e.g. 3, 2, 1 and 0).  Print all the modes. */
1090         if((val[WHATS_VALID] & OK_W64_70) && (val[ADV_PIO_MODES] & PIO_SUP))
1091         {
1092                 jj = ((val[ADV_PIO_MODES] & PIO_SUP) << 3) | 0x0007;
1093                 for(ii = 0; ii <= PIO_MODE_MAX ; ii++)
1094                 {
1095                         if_printf((jj & 0x0001),"pio%d ",ii);
1096                         jj >>=1;
1097                 }
1098                 printf("\n");
1099         }
1100         else if(((min_std < 5) || (eqpt == CDROM)) && (val[PIO_MODE] & MODE) )
1101         {
1102                 for(ii = 0; ii <= val[PIO_MODE]>>8; ii++)
1103                         printf("pio%d ",ii);
1104                 printf("\n");
1105         }
1106         else
1107                 printf("unknown\n");
1108
1109         if(val[WHATS_VALID] & OK_W64_70)
1110         {
1111                 if(val[PIO_NO_FLOW] || val[PIO_FLOW])
1112                 {
1113                         printf("\t     Cycle time:");
1114                         if_printf(val[PIO_NO_FLOW]," no flow control=%uns", val[PIO_NO_FLOW]);
1115                         if_printf(val[PIO_FLOW],"  IORDY flow control=%uns", val[PIO_FLOW]);
1116                         printf("\n");
1117                 }
1118         }
1119
1120         if((val[CMDS_SUPP_1] & VALID) == VALID_VAL)
1121         {
1122                 printf("Commands/features:\n\tEnabled\tSupported:\n");
1123                 jj = val[CMDS_SUPP_0];
1124                 kk = val[CMDS_EN_0];
1125                 for(ii = 0; ii < NUM_CMD_FEAT_STR; ii++)
1126                 {
1127                         if((jj & 0x8000) && (*cmd_feat_str[ii] != '\0'))
1128                         {
1129                                 if_else_printf((kk & 0x8000),"\t   *","\t");
1130                                 printf("\t%s\n",cmd_feat_str[ii]);
1131                         }
1132                         jj <<=1; kk<<=1;
1133                         if(ii%16 == 15)
1134                         {
1135                                 jj = val[CMDS_SUPP_0+1+(ii/16)];
1136                                 kk = val[CMDS_EN_0+1+(ii/16)];
1137                         }
1138                         if(ii == 31)
1139                         {
1140                                 if((val[CMDS_SUPP_2] & VALID) != VALID_VAL)
1141                                         ii +=16;
1142                         }
1143                 }
1144         }
1145         if_printf(((val[RM_STAT] & RM_STAT_BITS) == RM_STAT_SUP),
1146                                 "\tRemovable Media Status Notification feature set supported\n");
1147
1148
1149         /* security */
1150         if((eqpt != CDROM) && (like_std > 3) &&
1151            (val[SECU_STATUS] || val[ERASE_TIME] || val[ENH_ERASE_TIME]))
1152         {
1153                 printf("Security: \n");
1154                 if_printf((val[PSWD_CODE] && (val[PSWD_CODE] != NOVAL_1)),
1155                                         "\tMaster password revision code = %u\n",val[PSWD_CODE]);
1156                 jj = val[SECU_STATUS];
1157                 if(jj)
1158                 {
1159                         for(ii = 0; ii < NUM_SECU_STR; ii++)
1160                         {
1161                                 if_else_printf((!(jj & 0x0001)),"\tnot\t%s\n", "\t\t%s\n", secu_str[ii]);
1162                                 jj >>=1;
1163                         }
1164                         if(val[SECU_STATUS] & SECU_ENABLED)
1165                         {
1166                                 printf("\tSecurity level ");
1167                                 if_else_printf((val[SECU_STATUS] & SECU_LEVEL),"maximum\n","high\n");
1168                         }
1169                 }
1170                 jj =  val[ERASE_TIME]     & ERASE_BITS;
1171                 kk =  val[ENH_ERASE_TIME] & ERASE_BITS;
1172                 if(jj || kk)
1173                 {
1174                         printf("\t");
1175                         if_printf(jj,"%umin for SECURITY ERASE UNIT. ", jj==ERASE_BITS ? 508 : jj<<1);
1176                         if_printf(kk,"%umin for ENHANCED SECURITY ERASE UNIT.", kk==ERASE_BITS ? 508 : kk<<1);
1177                         printf("\n");
1178                 }
1179         }
1180
1181         /* reset result */
1182         if((val[HWRST_RSLT] & VALID) == VALID_VAL)
1183         {
1184                 printf("HW reset results:\n");
1185                 if_else_printf((val[HWRST_RSLT] & CBLID),"\tCBLID- above Vih\n","\tCBLID- below Vih\n");
1186
1187                 if(val[HWRST_RSLT] & RST0)
1188                 {
1189                         printf("\tDevice num = 0");
1190                         jj = val[HWRST_RSLT];
1191                 }
1192                 else
1193                 {
1194                         printf("\tDevice num = 1");
1195                         jj = val[HWRST_RSLT] >> 8;
1196                 }
1197
1198                 if((jj & DEV_DET) == JUMPER_VAL)
1199                         printf(" determined by the jumper");
1200                 else if((jj & DEV_DET) == CSEL_VAL)
1201                         printf(" determined by CSEL");
1202                 printf("\n");
1203         }
1204
1205         /* more stuff from std 5 */
1206         if((like_std > 4) && (eqpt != CDROM))
1207         {
1208                 if(val[CFA_PWR_MODE] & VALID_W160)
1209                 {
1210                         printf("CFA power mode 1:\n\t");
1211                         if_else_printf((val[CFA_PWR_MODE] & PWR_MODE_OFF),"disabled","enabled");
1212
1213                         if_printf((val[CFA_PWR_MODE] & PWR_MODE_REQ)," and required by some commands");
1214                         printf("\n");
1215
1216                         if_printf((val[CFA_PWR_MODE] & MAX_AMPS),"\tMaximum current = %uma\n",val[CFA_PWR_MODE] & MAX_AMPS);
1217                 }
1218                 if((val[INTEGRITY] & SIG) == SIG_VAL)
1219                 {
1220                         printf("Checksum: ");
1221                         if_printf(chksum,"in");
1222                         printf("correct\n");
1223                 }
1224         }
1225
1226         exit(0);
1227 }
1228 #endif
1229
1230 static int verbose, get_identity, get_geom, noisy = 1, quiet;
1231 static int flagcount, do_flush, is_scsi_hd, is_xt_hd;
1232 static int do_ctimings, do_timings;
1233
1234 static unsigned long set_readahead, get_readahead, Xreadahead;
1235 static unsigned long set_readonly, get_readonly, readonly;
1236 static unsigned long set_unmask, get_unmask, unmask;
1237 static unsigned long set_mult, get_mult, mult;
1238 #ifdef CONFIG_FEATURE_HDPARM_HDIO_GETSET_DMA
1239 static unsigned long set_dma, get_dma, dma;
1240 #endif
1241 static unsigned long set_dma_q, get_dma_q, dma_q;
1242 static unsigned long set_nowerr, get_nowerr, nowerr;
1243 static unsigned long set_keep, get_keep, keep;
1244 static unsigned long set_io32bit, get_io32bit, io32bit;
1245 static unsigned long set_piomode, noisy_piomode;
1246 static int piomode;
1247 #ifdef HDIO_DRIVE_CMD
1248 static unsigned long set_dkeep, get_dkeep, dkeep;
1249 static unsigned long set_standby, get_standby, standby_requested;
1250 static unsigned long set_xfermode, get_xfermode;
1251 static int xfermode_requested;
1252 static unsigned long set_lookahead, get_lookahead, lookahead;
1253 static unsigned long set_prefetch, get_prefetch, prefetch;
1254 static unsigned long set_defects, get_defects, defects;
1255 static unsigned long set_wcache, get_wcache, wcache;
1256 static unsigned long set_doorlock, get_doorlock, doorlock;
1257 static unsigned long set_seagate, get_seagate;
1258 static unsigned long set_standbynow, get_standbynow;
1259 static unsigned long set_sleepnow, get_sleepnow;
1260 static unsigned long get_powermode;
1261 static unsigned long set_apmmode, get_apmmode, apmmode;
1262 #endif
1263 #ifdef CONFIG_FEATURE_HDPARM_GET_IDENTITY
1264 static int get_IDentity;
1265 #endif
1266 #ifdef CONFIG_FEATURE_HDPARM_HDIO_UNREGISTER_HWIF
1267 static int      unregister_hwif;
1268 static int      hwif;
1269 #endif
1270 #ifdef CONFIG_FEATURE_HDPARM_HDIO_SCAN_HWIF
1271 static int      scan_hwif;
1272 static int      hwif_data;
1273 static int      hwif_ctrl;
1274 static int      hwif_irq;
1275 #endif
1276 #ifdef CONFIG_FEATURE_HDPARM_HDIO_TRISTATE_HWIF
1277 static int      set_busstate, get_busstate, busstate;
1278 #endif
1279 static int      reread_partn;
1280
1281 #ifdef CONFIG_FEATURE_HDPARM_HDIO_DRIVE_RESET
1282 static int      perform_reset;
1283 #endif /* CONFIG_FEATURE_HDPARM_HDIO_DRIVE_RESET */
1284 #ifdef CONFIG_FEATURE_HDPARM_HDIO_TRISTATE_HWIF
1285 static int      perform_tristate,       tristate;
1286 #endif /* CONFIG_FEATURE_HDPARM_HDIO_TRISTATE_HWIF */
1287
1288 // Historically, if there was no HDIO_OBSOLETE_IDENTITY, then
1289 // then the HDIO_GET_IDENTITY only returned 142 bytes.
1290 // Otherwise, HDIO_OBSOLETE_IDENTITY returns 142 bytes,
1291 // and HDIO_GET_IDENTITY returns 512 bytes.  But the latest
1292 // 2.5.xx kernels no longer define HDIO_OBSOLETE_IDENTITY
1293 // (which they should, but they should just return -EINVAL).
1294 //
1295 // So.. we must now assume that HDIO_GET_IDENTITY returns 512 bytes.
1296 // On a really old system, it will not, and we will be confused.
1297 // Too bad, really.
1298
1299 #ifdef CONFIG_FEATURE_HDPARM_GET_IDENTITY
1300 static const char * const cfg_str[] =
1301 {       "",          " HardSect",   " SoftSect",  " NotMFM",
1302         " HdSw>15uSec", " SpinMotCtl", " Fixed",     " Removeable",
1303         " DTR<=5Mbs",   " DTR>5Mbs",   " DTR>10Mbs", " RotSpdTol>.5%",
1304         " dStbOff",     " TrkOff",     " FmtGapReq", " nonMagnetic"
1305 };
1306
1307 static const char * const BuffType[]    = {"unknown", "1Sect", "DualPort", "DualPortCache"};
1308
1309 static void dump_identity (const struct hd_driveid *id)
1310 {
1311         int i;
1312         char pmodes[64], dmodes[128], umodes[128];
1313         const unsigned short int *id_regs= (const void*) id;
1314         unsigned long capacity;
1315
1316         pmodes[0] = dmodes[0] = umodes[0] = '\0';
1317
1318         printf("\n Model=%.40s, FwRev=%.8s, SerialNo=%.20s\n Config={",
1319                                 id->model, id->fw_rev, id->serial_no);
1320         for (i=0; i<=15; i++)
1321                 if_printf((id->config & (1<<i)),"%s", cfg_str[i]);
1322
1323         printf(" }\n RawCHS=%u/%u/%u, TrkSize=%u, SectSize=%u, ECCbytes=%u\n",
1324                                 id->cyls, id->heads, id->sectors, id->track_bytes,
1325                                 id->sector_bytes, id->ecc_bytes);
1326
1327         if (id->buf_type > 3)
1328                 printf("%s%u", " BuffType=", id->buf_type);
1329         else
1330                 printf("%s%s", " BuffType=", BuffType[id->buf_type]);
1331
1332         printf(", BuffSize=%ukB, MaxMultSect=%u", id->buf_size/2, id->max_multsect);
1333         if (id->max_multsect)
1334         {
1335                 printf(", MultSect=");
1336                 if (!(id->multsect_valid&1))
1337                         printf("?%u?", id->multsect);
1338                 else if (id->multsect)
1339                         printf("%u", id->multsect);
1340                 else
1341                         printf("off");
1342         }
1343         printf("\n");
1344         if (id->tPIO <= 5)
1345         {
1346                 strcat(pmodes, "pio0 ");
1347                 if_strcat((id->tPIO >= 1), pmodes, "pio1 ");
1348                 if_strcat((id->tPIO >= 2), pmodes, "pio2 ");
1349
1350         }
1351         if_printf((!(id->field_valid&1))," (maybe):");
1352 #if __BYTE_ORDER == __BIG_ENDIAN
1353         capacity = (id->cur_capacity0 << 16) | id->cur_capacity1;
1354 #else
1355         capacity = (id->cur_capacity1 << 16) | id->cur_capacity0;
1356 #endif
1357         printf(" CurCHS=%u/%u/%u, CurSects=%lu, LBA=%s",id->cur_cyls, id->cur_heads,
1358                                                                                                         id->cur_sectors, capacity ,
1359                                                                                         ((id->capability&2)==0)?"no":"yes");
1360
1361         if_printf((id->capability&2),", LBAsects=%u", id->lba_capacity);
1362
1363         if (id->capability&1)
1364         {
1365                 if (id->dma_1word | id->dma_mword)
1366                 {
1367                         if_strcat((id->dma_1word & 0x100),      dmodes, "*");
1368                         if_strcat((id->dma_1word & 1),          dmodes, "sdma0 ");
1369                         if_strcat((id->dma_1word & 0x200),      dmodes, "*");
1370                         if_strcat((id->dma_1word & 2),          dmodes, "sdma1 ");
1371                         if_strcat((id->dma_1word & 0x400),      dmodes, "*");
1372                         if_strcat((id->dma_1word & 4),          dmodes, "sdma2 ");
1373                         if_strcat((id->dma_1word & 0xf800),     dmodes, "*");
1374                         if_strcat((id->dma_1word & 0xf8),       dmodes, "sdma? ");
1375                         if_strcat((id->dma_mword & 0x100),      dmodes, "*");
1376                         if_strcat((id->dma_mword & 1),          dmodes, "mdma0 ");
1377                         if_strcat((id->dma_mword & 0x200),      dmodes, "*");
1378                         if_strcat((id->dma_mword & 2),          dmodes, "mdma1 ");
1379                         if_strcat((id->dma_mword & 0x400),      dmodes, "*");
1380                         if_strcat((id->dma_mword & 4),          dmodes, "mdma2 ");
1381                         if_strcat((id->dma_mword & 0xf800),     dmodes, "*");
1382                         if_strcat((id->dma_mword & 0xf8),       dmodes, "mdma? ");
1383                 }
1384         }
1385         printf("\n IORDY=");
1386         if (id->capability&8)
1387                 printf((id->capability&4) ? "on/off" : "yes");
1388         else
1389                 printf("no");
1390
1391         if ((id->capability&8) || (id->field_valid&2))
1392         {
1393                 if (id->field_valid&2)
1394                 {
1395                         printf(", tPIO={min:%u,w/IORDY:%u}", id->eide_pio, id->eide_pio_iordy);
1396                         if_strcat((id->eide_pio_modes & 1), pmodes, "pio3 ");
1397                         if_strcat((id->eide_pio_modes & 2), pmodes, "pio4 ");
1398                         if_strcat((id->eide_pio_modes &~3), pmodes, "pio? ");
1399                 }
1400                 if (id->field_valid&4)
1401                 {
1402                         if_strcat((id->dma_ultra & 0x100),umodes,"*");
1403                         if_strcat((id->dma_ultra & 0x001),umodes,"udma0 ");
1404                         if_strcat((id->dma_ultra & 0x200),umodes,"*");
1405                         if_strcat((id->dma_ultra & 0x002),umodes,"udma1 ");
1406                         if_strcat((id->dma_ultra & 0x400),umodes,"*");
1407                         if_strcat((id->dma_ultra & 0x004),umodes,"udma2 ");
1408 #ifdef __NEW_HD_DRIVE_ID
1409                         if (id->hw_config & 0x2000)
1410                         {
1411 #else /* !__NEW_HD_DRIVE_ID */
1412                         if (id->word93 & 0x2000)
1413                         {
1414 #endif /* __NEW_HD_DRIVE_ID */
1415                                 if_strcat((id->dma_ultra & 0x0800),umodes,"*");
1416                                 if_strcat((id->dma_ultra & 0x0008),umodes,"udma3 ");
1417                                 if_strcat((id->dma_ultra & 0x1000),umodes,"*");
1418                                 if_strcat((id->dma_ultra & 0x0010),umodes,"udma4 ");
1419                                 if_strcat((id->dma_ultra & 0x2000),umodes,"*");
1420                                 if_strcat((id->dma_ultra & 0x0020),umodes,"udma5 ");
1421                                 if_strcat((id->dma_ultra & 0x4000),umodes,"*");
1422                                 if_strcat((id->dma_ultra & 0x0040),umodes,"udma6 ");
1423                                 if_strcat((id->dma_ultra & 0x8000),umodes,"*");
1424                                 if_strcat((id->dma_ultra & 0x0080),umodes,"udma7 ");
1425                         }
1426                 }
1427         }
1428         if_printf(((id->capability&1) && (id->field_valid&2)),
1429                                 ", tDMA={min:%u,rec:%u}", id->eide_dma_min, id->eide_dma_time);
1430         printf("\n PIO modes:  %s", pmodes);
1431         if_printf((*dmodes),"\n DMA modes:  %s", dmodes);
1432         if_printf((*umodes),"\n UDMA modes: %s", umodes);
1433
1434         printf("\n AdvancedPM=%s",((id_regs[83]&8)==0)?"no":"yes");
1435         if (id_regs[83] & 8)
1436         {
1437                 if (!(id_regs[86]&8))
1438                         printf(": disabled (255)");
1439                 else if ((id_regs[91]&0xFF00)!=0x4000)
1440                         printf(": unknown setting");
1441                 else
1442                         printf(": mode=0x%02X (%u)",id_regs[91]&0xFF,id_regs[91]&0xFF);
1443         }
1444         if_printf( (id_regs[82]&0x20)," WriteCache=%s",(id_regs[85]&0x20) ? "enabled" : "disabled");
1445 #ifdef __NEW_HD_DRIVE_ID
1446         if ((id->minor_rev_num && id->minor_rev_num <= 31) || (id->major_rev_num && id->minor_rev_num <= 31))
1447         {
1448                 printf("\n Drive conforms to: ");
1449                 if_else_printf((id->minor_rev_num <= 31),"%s: ","unknown: ", minor_str[id->minor_rev_num]);
1450                 if (id->major_rev_num != 0x0000 &&  /* NOVAL_0 */
1451                     id->major_rev_num != 0xFFFF) {  /* NOVAL_1 */
1452                         for (i=0; i <= 15; i++)
1453                                 if_printf((id->major_rev_num & (1<<i))," ATA/ATAPI-%u", i);
1454                 }
1455         }
1456 #endif /* __NEW_HD_DRIVE_ID */
1457         printf("\n\n * signifies the current active mode\n\n");
1458 }
1459 #endif
1460
1461 static void flush_buffer_cache (int fd)
1462 {
1463         fsync (fd);                             /* flush buffers */
1464         bb_ioctl(fd, BLKFLSBUF, NULL,"BLKFLSBUF" ) ;/* do it again, big time */
1465 #ifdef HDIO_DRIVE_CMD
1466         sleep(1);
1467         if (ioctl(fd, HDIO_DRIVE_CMD, NULL) && errno != EINVAL) /* await completion */
1468                 bb_perror_msg("HDIO_DRIVE_CMD");
1469 #endif
1470 }
1471
1472 static int seek_to_zero (int fd)
1473 {
1474         if (lseek(fd, (off_t) 0, SEEK_SET))
1475                 return 1;
1476         return 0;
1477 }
1478
1479 static int read_big_block (int fd, char *buf)
1480 {
1481
1482         const char *string;
1483         int i, rc;
1484         if ((rc = read(fd, buf, TIMING_BUF_BYTES)) != TIMING_BUF_BYTES)
1485         {
1486                 switch(rc)
1487                 {
1488                         case -1:
1489                                 string = "read()";
1490                                 break;
1491                         case  0:
1492                                 string = "read() hit EOF - device too small";
1493                                 break;
1494                         default:
1495                                 string = "read(%u) returned %u bytes";
1496                 }
1497                 bb_error_msg(string, TIMING_BUF_BYTES, rc);
1498                 return 1;
1499         }
1500
1501         /* access all sectors of buf to ensure the read fully completed */
1502         for (i = 0; i < TIMING_BUF_BYTES; i += 512)
1503                 buf[i] &= 1;
1504         return 0;
1505 }
1506
1507 static double correction;
1508
1509 static void do_time (int flag, int fd)
1510 /*
1511         flag = 0 time_cache
1512         flag = 1 time_device
1513 */
1514 {
1515         int i;
1516         char *buf;
1517         double elapsed;
1518         struct itimerval e1, e2;
1519         int shmid;
1520         int timing_MB = TIMING_MB;
1521
1522         if ((shmid = shmget(IPC_PRIVATE, TIMING_BUF_BYTES, 0600)) == -1)
1523         {
1524                 bb_error_msg (bb_msg_shared_mem,"allocate"); /*"could not allocate sharedmem buf"*/
1525                 return;
1526         }
1527         if (shmctl(shmid, SHM_LOCK, NULL) == -1)
1528         {
1529                 bb_error_msg (bb_msg_shared_mem,"lock"); /*"could not lock sharedmem buf"*/
1530                 (void) shmctl(shmid, IPC_RMID, NULL);
1531                 return;
1532         }
1533         if ((buf = shmat(shmid, (char *) 0, 0)) == (char *) -1)
1534         {
1535                 bb_error_msg (bb_msg_shared_mem,"attach"); /*"could not attach sharedmem buf"*/
1536                 (void) shmctl(shmid, IPC_RMID, NULL);
1537                 return;
1538         }
1539         if (shmctl(shmid, IPC_RMID, NULL) == -1)
1540                 bb_error_msg ("shmctl(,IPC_RMID,)");
1541
1542         /* Clear out the device request queues & give them time to complete */
1543         sync_and_sleep(3);
1544
1545         if(flag  == 0) /* Time cache */
1546         {
1547                 /* Calculate a correction factor for the basic
1548                 * overhead of doing a read() from the buffer cache.
1549                 * To do this, we read the data once to "cache it" and
1550                 * to force full preallocation of our timing buffer,
1551                 * and then we re-read it 10 times while timing it.
1552                 *
1553                 * getitimer() is used rather than gettimeofday() because
1554                 * it is much more consistent (on my machine, at least).
1555                 */
1556                 setitimer(ITIMER_REAL, &(struct itimerval){{1000,0},{1000,0}}, NULL);
1557                 if (seek_to_zero (fd))
1558                         return;
1559                 if (read_big_block (fd, buf))
1560                         return;
1561                 printf(" Timing buffer-cache reads:   ");
1562                 fflush(stdout);
1563
1564                 /* Clear out the device request queues & give them time to complete */
1565                 sync_and_sleep(1);
1566
1567                 /* Time re-reading from the buffer-cache */
1568                 getitimer(ITIMER_REAL, &e1);
1569                 for (i = (BUFCACHE_FACTOR * TIMING_BUF_COUNT) ; i > 0; --i)
1570                 {
1571                         if (seek_to_zero (fd))
1572                                 goto quit;
1573                         if (read_big_block (fd, buf))
1574                                 goto quit;
1575                 }
1576                 getitimer(ITIMER_REAL, &e2);
1577                 correction = (e1.it_value.tv_sec - e2.it_value.tv_sec) + ((e1.it_value.tv_usec - e2.it_value.tv_usec) / 1000000.0);
1578
1579                 /* Now remove the lseek() from the correction factor */
1580                 getitimer(ITIMER_REAL, &e1);
1581                 for (i = (BUFCACHE_FACTOR * TIMING_BUF_COUNT) ; i > 0; --i)
1582                 {
1583                         if (seek_to_zero (fd))
1584                                 goto quit;
1585                 }
1586                 getitimer(ITIMER_REAL, &e2);
1587                 correction -= (e1.it_value.tv_sec - e2.it_value.tv_sec)
1588                 + ((e1.it_value.tv_usec - e2.it_value.tv_usec) / 1000000.0);
1589
1590                 if ((BUFCACHE_FACTOR * timing_MB) >= correction)  /* more than 1MB/s */
1591                         printf("%2d MB in %5.2f seconds =%6.2f MB/sec\n",
1592                                 (BUFCACHE_FACTOR * timing_MB),  correction,
1593                                 (BUFCACHE_FACTOR * timing_MB) / correction);
1594                 else
1595                         printf("%2d MB in %5.2f seconds =%6.2f kB/sec\n",
1596                                 (BUFCACHE_FACTOR * timing_MB),  correction,
1597                                 (BUFCACHE_FACTOR * timing_MB) / correction * 1024);
1598                 correction /= BUFCACHE_FACTOR;
1599
1600                 flush_buffer_cache(fd);
1601                 sleep(1);
1602         }
1603         else /* Time device */
1604         {
1605                 printf(" Timing buffered disk reads:  ");
1606                 fflush(stdout);
1607
1608                 /*
1609                 * getitimer() is used rather than gettimeofday() because
1610                 * it is much more consistent (on my machine, at least).
1611                 */
1612                 setitimer(ITIMER_REAL, &(struct itimerval){{1000,0},{1000,0}}, NULL);
1613
1614                 /* Now do the timings for real */
1615                 getitimer(ITIMER_REAL, &e1);
1616                 for (i = TIMING_BUF_COUNT; i > 0; --i)
1617                 {
1618                         if (read_big_block (fd, buf))
1619                                 goto quit;
1620                 }
1621                 getitimer(ITIMER_REAL, &e2);
1622
1623                 elapsed =       (e1.it_value.tv_sec - e2.it_value.tv_sec) + ((e1.it_value.tv_usec - e2.it_value.tv_usec) / 1000000.0);
1624
1625                 if (timing_MB >= elapsed)  /* more than 1MB/s */
1626                         printf("%2d MB in %5.2f seconds =%6.2f MB/sec\n",timing_MB, elapsed, timing_MB / elapsed);
1627                 else
1628                         printf("%2d MB in %5.2f seconds =%6.2f kB/sec\n",timing_MB, elapsed, timing_MB / elapsed * 1024);
1629
1630                 /*"Hmm.. suspicious results: probably not enough free memory for a proper test.");*/
1631                 if (elapsed <= (correction * 2))
1632                                         bb_error_msg(bb_msg_memory_exhausted);
1633
1634 #if 0  /* the "estimate" is just plain wrong for many systems.. */
1635                 else if (correction != 0.0) {
1636                         printf(" Estimating raw driver speed: ");
1637                         elapsed -= correction;
1638                         if (timing_MB >= elapsed)  /* more than 1MB/s */
1639                                 printf("%2d MB in %5.2f seconds =%6.2f MB/sec\n",
1640                                         timing_MB, elapsed, timing_MB / elapsed);
1641                         else
1642                                 printf("%2d MB in %5.2f seconds =%6.2f kB/sec\n",
1643                                         timing_MB, elapsed, timing_MB / elapsed * 1024);
1644                 }
1645 #endif
1646         }
1647 quit:
1648         if (-1 == shmdt(buf))
1649                 bb_error_msg (bb_msg_shared_mem,"detach"); /*"could not detach sharedmem buf"*/
1650 }
1651
1652
1653 static void no_scsi (void)
1654 {
1655         /*" operation not supported on SCSI disks"*/
1656         if (is_scsi_hd)
1657                 bb_error_msg_and_die(bb_msg_op_not_supp,"SCSI");
1658 }
1659
1660 static void no_xt (void)
1661 {
1662         if (is_xt_hd)
1663                 bb_error_msg_and_die(bb_msg_op_not_supp,"XT");
1664 }
1665
1666 static void no_scsi_no_xt (void)
1667 {
1668         no_scsi();
1669         no_xt();
1670 }
1671
1672 static void on_off (unsigned int value)
1673 {
1674         printf(value ? " (on)\n" : " (off)\n");
1675 }
1676
1677 #ifdef CONFIG_FEATURE_HDPARM_HDIO_TRISTATE_HWIF
1678 static void bus_state_value (unsigned int value)
1679 {
1680         const char *string;
1681
1682         switch (value)
1683         {
1684                 case BUSSTATE_ON:
1685                         string = " (on)\n";
1686                         break;
1687                 case BUSSTATE_OFF:
1688                         string = " (off)\n";
1689                         break;
1690                 case BUSSTATE_TRISTATE:
1691                         string = " (tristate)\n";
1692                         break;
1693                 default:
1694                         string = " (unknown: %d)\n";
1695                         break;
1696         }
1697         printf(string, value);
1698 }
1699 #endif
1700
1701 #ifdef HDIO_DRIVE_CMD
1702 static void interpret_standby (unsigned int standby)
1703 {
1704         printf(" (");
1705         switch(standby)
1706         {
1707                 case 0:
1708                         printf("off");
1709                         break;
1710                 case 252:
1711                         printf("21 minutes");
1712                         break;
1713                 case 253:
1714                         printf("vendor-specific");
1715                         break;
1716                 case 254:
1717                         printf("?reserved");
1718                         break;
1719                 case 255:
1720                         printf("21 minutes + 15 seconds");
1721                         break;
1722                 default:
1723                         if (standby <= 240)
1724                         {
1725                                 unsigned int secs = standby * 5;
1726                                 unsigned int mins = secs / 60;
1727                                 secs %= 60;
1728                                 if_printf(mins,"%u minutes", mins);
1729                                 if_printf((mins && secs)," + ");
1730                                 if_printf(secs,"%u seconds", secs);
1731                         }
1732                         else if (standby <= 251)
1733                         {
1734                                 unsigned int mins = (standby - 240) * 30;
1735                                 unsigned int hrs  = mins / 60;
1736                                 mins %= 60;
1737                                 if_printf(hrs,"%u hours", hrs);
1738                                 if_printf((hrs && mins)," + ");
1739                                 if_printf(mins,"%u minutes", mins);
1740                         }
1741                         else
1742                                 printf("illegal value");
1743                         break;
1744         }
1745         printf(")\n");
1746 }
1747
1748 struct xfermode_entry {
1749     int val;
1750     const char *name;
1751 };
1752
1753 static const struct xfermode_entry xfermode_table[] = {
1754     { 8,    "pio0" },
1755     { 9,    "pio1" },
1756     { 10,   "pio2" },
1757     { 11,   "pio3" },
1758     { 12,   "pio4" },
1759     { 13,   "pio5" },
1760     { 14,   "pio6" },
1761     { 15,   "pio7" },
1762     { 16,   "sdma0" },
1763     { 17,   "sdma1" },
1764     { 18,   "sdma2" },
1765     { 19,   "sdma3" },
1766     { 20,   "sdma4" },
1767     { 21,   "sdma5" },
1768     { 22,   "sdma6" },
1769     { 23,   "sdma7" },
1770     { 32,   "mdma0" },
1771     { 33,   "mdma1" },
1772     { 34,   "mdma2" },
1773     { 35,   "mdma3" },
1774     { 36,   "mdma4" },
1775     { 37,   "mdma5" },
1776     { 38,   "mdma6" },
1777     { 39,   "mdma7" },
1778     { 64,   "udma0" },
1779     { 65,   "udma1" },
1780     { 66,   "udma2" },
1781     { 67,   "udma3" },
1782     { 68,   "udma4" },
1783     { 69,   "udma5" },
1784     { 70,   "udma6" },
1785     { 71,   "udma7" },
1786     { 0, NULL }
1787 };
1788
1789 static int translate_xfermode(char * name)
1790 {
1791         const struct xfermode_entry *tmp;
1792         char *endptr;
1793         int val = -1;
1794
1795
1796         for (tmp = xfermode_table; tmp->name != NULL; ++tmp)
1797         {
1798                 if (!strcmp(name, tmp->name))
1799                         return tmp->val;
1800
1801         }
1802
1803         val = strtol(name, &endptr, 10);
1804         if (*endptr == '\0')
1805                 return val;
1806
1807         return -1;
1808 }
1809
1810 static void interpret_xfermode (unsigned int xfermode)
1811 {
1812         printf(" (");
1813         switch(xfermode) {
1814                 case 0:
1815                         printf("default PIO mode");
1816                         break;
1817                 case 1:
1818                         printf("default PIO mode, disable IORDY");
1819                         break;
1820                 case 8:
1821                 case 9:
1822                 case 10:
1823                 case 11:
1824                 case 12:
1825                 case 13:
1826                 case 14:
1827                 case 15:
1828                         printf("PIO flow control mode%u", xfermode-8);
1829                         break;
1830                 case 16:
1831                 case 17:
1832                 case 18:
1833                 case 19:
1834                 case 20:
1835                 case 21:
1836                 case 22:
1837                 case 23:
1838                         printf("singleword DMA mode%u", xfermode-16);
1839                         break;
1840                 case 32:
1841                 case 33:
1842                 case 34:
1843                 case 35:
1844                 case 36:
1845                 case 37:
1846                 case 38:
1847                 case 39:
1848                         printf("multiword DMA mode%u", xfermode-32);
1849                         break;
1850                 case 64:
1851                 case 65:
1852                 case 66:
1853                 case 67:
1854                 case 68:
1855                 case 69:
1856                 case 70:
1857                 case 71:
1858                         printf("UltraDMA mode%u", xfermode-64);
1859                         break;
1860                 default:
1861                         printf("unknown, probably not valid");
1862                         break;
1863         }
1864         printf(")\n");
1865 }
1866 #endif /* HDIO_DRIVE_CMD */
1867
1868 #ifndef VXVM_MAJOR
1869 #define VXVM_MAJOR 199
1870 #endif
1871
1872 #ifndef CCISS_MAJOR
1873 #define CCISS_MAJOR 104
1874 #endif
1875
1876 static void process_dev (char *devname)
1877 {
1878         int fd;
1879         static long parm, multcount;
1880         struct stat stat_buf;
1881 #ifndef HDIO_DRIVE_CMD
1882         int force_operation = 0;
1883 #endif
1884         unsigned char args[4] = {WIN_SETFEATURES,0,0,0};
1885
1886         xstat(devname,&stat_buf);
1887
1888         switch(major(stat_buf.st_rdev))
1889         {
1890 #ifdef SCSI_DISK0_MAJOR
1891                 case (SCSI_DISK0_MAJOR):
1892                 case (SCSI_DISK1_MAJOR):
1893                 case (SCSI_DISK2_MAJOR):
1894                 case (SCSI_DISK3_MAJOR):
1895                 case (SCSI_DISK4_MAJOR):
1896                 case (SCSI_DISK5_MAJOR):
1897                 case (SCSI_DISK6_MAJOR):
1898                 case (SCSI_DISK7_MAJOR):
1899 #else
1900                 case (SCSI_DISK_MAJOR):
1901 #endif
1902 #ifdef MD_MAJOR
1903                 case (MD_MAJOR):
1904 #endif
1905                 case (VXVM_MAJOR):
1906 #ifdef LVM_BLK_MAJOR
1907                 case (LVM_BLK_MAJOR):
1908 #endif
1909                 case (CCISS_MAJOR):
1910                         is_scsi_hd = 1;
1911                         break;
1912 #ifdef XT_DISK_MAJOR
1913                 case (XT_DISK_MAJOR):
1914                         is_xt_hd = 1;
1915                         break;
1916 #endif
1917                 case IDE0_MAJOR:
1918                 case IDE1_MAJOR:
1919 #ifdef IDE2_MAJOR
1920                 case IDE2_MAJOR:
1921 #endif
1922 #ifdef IDE3_MAJOR
1923                 case IDE3_MAJOR:
1924 #endif
1925 #ifdef IDE4_MAJOR
1926                 case IDE4_MAJOR:
1927 #endif
1928 #ifdef IDE5_MAJOR
1929                 case IDE5_MAJOR:
1930 #endif
1931 #ifdef IDE6_MAJOR
1932                 case IDE6_MAJOR:
1933 #endif
1934 #ifdef IDE7_MAJOR
1935                 case IDE7_MAJOR:
1936 #endif
1937 #ifdef IDE8_MAJOR
1938                 case IDE8_MAJOR:
1939 #endif
1940 #ifdef IDE9_MAJOR
1941                 case IDE9_MAJOR:
1942 #endif
1943                         break;  /* do nothing */
1944                 default:
1945                         bb_error_msg_and_die("%s not supported",devname);
1946         }
1947
1948         fd = bb_xopen (devname, O_RDONLY|O_NONBLOCK);
1949         if_printf( (!quiet),"\n%s:\n", devname);
1950
1951         if (set_readahead)
1952         {
1953                 if_printf(get_readahead," setting fs readahead to %ld\n", Xreadahead);
1954                 bb_ioctl(fd, BLKRASET,(int *)Xreadahead,"BLKRASET");
1955         }
1956 #ifdef CONFIG_FEATURE_HDPARM_HDIO_UNREGISTER_HWIF
1957         if (unregister_hwif)
1958         {
1959                 no_scsi();
1960                 printf(" attempting to unregister hwif#%u\n", hwif);
1961                 bb_ioctl(fd, HDIO_UNREGISTER_HWIF,(int *)(unsigned long)hwif,"HDIO_UNREGISTER_HWIF");
1962         }
1963 #endif
1964 #ifdef CONFIG_FEATURE_HDPARM_HDIO_SCAN_HWIF
1965         if (scan_hwif)
1966         {
1967                 no_scsi();
1968                 printf(" attempting to scan hwif (0x%x, 0x%x, %u)\n", hwif_data, hwif_ctrl, hwif_irq);
1969                 args[0] = hwif_data;
1970                 args[1] = hwif_ctrl;
1971                 args[2] = hwif_irq;
1972                 bb_ioctl(fd, HDIO_SCAN_HWIF, args, "HDIO_SCAN_HWIF");
1973         }
1974 #endif
1975         if (set_piomode)
1976         {
1977                 no_scsi_no_xt();
1978
1979                 if (noisy_piomode)
1980                 {
1981                         printf(" attempting to ");
1982                         if (piomode == 255)
1983                                 printf("auto-tune PIO mode\n");
1984                         else if (piomode < 100)
1985                                 printf("set PIO mode to %d\n", piomode);
1986                         else if (piomode < 200)
1987                                 printf("set MDMA mode to %d\n", (piomode-100));
1988                         else
1989                                 printf("set UDMA mode to %d\n", (piomode-200));
1990                 }
1991                 bb_ioctl(fd, HDIO_SET_PIO_MODE, (int *)(unsigned long)piomode, "HDIO_SET_PIO_MODE");
1992         }
1993         if (set_io32bit)
1994         {
1995                 no_scsi_no_xt();
1996                 if_printf(get_io32bit," setting 32-bit IO_support flag to %ld\n", io32bit);
1997                 bb_ioctl(fd, HDIO_SET_32BIT, (int *)io32bit, "HDIO_SET_32BIT");
1998         }
1999         if (set_mult)
2000         {
2001                 no_scsi_no_xt();
2002                 if_printf(get_mult, " setting multcount to %ld\n", mult);
2003                 if(ioctl(fd, HDIO_SET_MULTCOUNT, mult))
2004                         bb_perror_msg("HDIO_SET_MULTCOUNT");
2005 #ifndef HDIO_DRIVE_CMD
2006                 else
2007                         force_operation = 1;
2008 #endif
2009         }
2010         if (set_readonly)
2011         {
2012                 if_printf_on_off(get_readonly," setting readonly to %ld", readonly);
2013                 bb_ioctl(fd, BLKROSET, &readonly, "BLKROSET");
2014         }
2015         if (set_unmask)
2016         {
2017                 no_scsi_no_xt();
2018                 if_printf_on_off(get_unmask," setting unmaskirq to %ld", unmask);
2019                 bb_ioctl(fd, HDIO_SET_UNMASKINTR, (int *)unmask, "HDIO_SET_UNMASKINTR");
2020         }
2021 #ifdef CONFIG_FEATURE_HDPARM_HDIO_GETSET_DMA
2022         if (set_dma)
2023         {
2024                 no_scsi();
2025                 if_printf_on_off(get_dma," setting using_dma to %ld", dma);
2026                 bb_ioctl(fd, HDIO_SET_DMA, (int *)dma, "HDIO_SET_DMA");
2027         }
2028 #endif /* CONFIG_FEATURE_HDPARM_HDIO_GETSET_DMA */
2029         if (set_dma_q)
2030         {
2031                 no_scsi();
2032                 if_printf_on_off(get_dma_q," setting DMA queue_depth to %ld", dma_q);
2033                 bb_ioctl(fd, HDIO_SET_QDMA, (int *)dma_q, "HDIO_SET_QDMA");
2034         }
2035         if (set_nowerr)
2036         {
2037                 no_scsi_no_xt();
2038                 if_printf_on_off(get_nowerr," setting nowerr to %ld", nowerr);
2039                 bb_ioctl(fd, HDIO_SET_NOWERR, (int *)nowerr,"HDIO_SET_NOWERR");
2040         }
2041         if (set_keep)
2042         {
2043                 no_scsi_no_xt();
2044                 if_printf_on_off(get_keep," setting keep_settings to %ld", keep);
2045                 bb_ioctl(fd, HDIO_SET_KEEPSETTINGS, (int *)keep,"HDIO_SET_KEEPSETTINGS");
2046         }
2047 #ifdef HDIO_DRIVE_CMD
2048         if (set_doorlock)
2049         {
2050                 no_scsi_no_xt();
2051                 args[0] = doorlock ? WIN_DOORLOCK : WIN_DOORUNLOCK;
2052                 if_printf_on_off(get_doorlock," setting drive doorlock to %ld", doorlock);
2053                 bb_ioctl(fd, HDIO_DRIVE_CMD, &args,"HDIO_DRIVE_CMD(doorlock)");
2054         }
2055         if (set_dkeep)
2056         {
2057                 /* lock/unlock the drive's "feature" settings */
2058                 no_scsi_no_xt();
2059                 if_printf_on_off(get_dkeep," setting drive keep features to %ld", dkeep);
2060                 args[2] = dkeep ? 0x66 : 0xcc;
2061                 bb_ioctl(fd, HDIO_DRIVE_CMD, &args,"HDIO_DRIVE_CMD(keepsettings)");
2062         }
2063         if (set_defects)
2064         {
2065                 no_scsi();
2066                 args[2] = defects ? 0x04 : 0x84;
2067                 if_printf(get_defects," setting drive defect-mgmt to %ld\n", defects);
2068                 bb_ioctl(fd, HDIO_DRIVE_CMD, &args,"HDIO_DRIVE_CMD(defectmgmt)");
2069         }
2070         if (set_prefetch)
2071         {
2072                 no_scsi_no_xt();
2073                 args[1] = prefetch;
2074                 args[2] = 0xab;
2075                 if_printf(get_prefetch," setting drive prefetch to %ld\n", prefetch);
2076                 bb_ioctl(fd, HDIO_DRIVE_CMD, &args, "HDIO_DRIVE_CMD(setprefetch)");
2077         }
2078         if (set_xfermode)
2079         {
2080                 no_scsi_no_xt();
2081                 args[1] = xfermode_requested;
2082                 args[2] = 3;
2083                 if (get_xfermode)
2084                 {
2085                         printf(" setting xfermode to %d", xfermode_requested);
2086                         interpret_xfermode(xfermode_requested);
2087                 }
2088                 bb_ioctl(fd, HDIO_DRIVE_CMD, &args,"HDIO_DRIVE_CMD(setxfermode)");
2089         }
2090         if (set_lookahead)
2091         {
2092                 no_scsi_no_xt();
2093                 args[2] = lookahead ? 0xaa : 0x55;
2094                 if_printf_on_off(get_lookahead," setting drive read-lookahead to %ld", lookahead);
2095                 bb_ioctl(fd, HDIO_DRIVE_CMD, &args, "HDIO_DRIVE_CMD(setreadahead)");
2096         }
2097         if (set_apmmode)
2098         {
2099                 no_scsi();
2100                 apmmode=check_if_min_and_set_val(apmmode,1);
2101                 apmmode=check_if_maj_and_set_val(apmmode,255);
2102                 if_printf(get_apmmode," setting APM level to");
2103                 if (apmmode==255)
2104                 {
2105                         /* disable Advanced Power Management */
2106                         args[2] = 0x85; /* feature register */
2107                         if_printf(get_apmmode," disabled\n");
2108                 }
2109                 else
2110                 {
2111                         /* set Advanced Power Management mode */
2112                         args[2] = 0x05; /* feature register */
2113                         args[1] = apmmode; /* sector count register */
2114                         if_printf(get_apmmode," 0x%02lX (%ld)\n",apmmode,apmmode);
2115                 }
2116                 bb_ioctl(fd, HDIO_DRIVE_CMD, &args,"HDIO_DRIVE_CMD");
2117         }
2118         if (set_wcache)
2119         {
2120 #ifdef DO_FLUSHCACHE
2121 #ifndef WIN_FLUSHCACHE
2122 #define WIN_FLUSHCACHE 0xe7
2123 #endif
2124                 static unsigned char flushcache[4] = {WIN_FLUSHCACHE,0,0,0};
2125 #endif /* DO_FLUSHCACHE */
2126                 no_scsi_no_xt();
2127                 args[2] = wcache ? 0x02 : 0x82;
2128                 if_printf_on_off(get_wcache," setting drive write-caching to %ld", wcache);
2129 #ifdef DO_FLUSHCACHE
2130                 if (!wcache)
2131                         bb_ioctl(fd, HDIO_DRIVE_CMD, &flushcache, "HDIO_DRIVE_CMD(flushcache)");
2132 #endif /* DO_FLUSHCACHE */
2133                 bb_ioctl(fd, HDIO_DRIVE_CMD, &args, "HDIO_DRIVE_CMD(setcache)");
2134 #ifdef DO_FLUSHCACHE
2135                 if (!wcache)
2136                         bb_ioctl(fd, HDIO_DRIVE_CMD, &flushcache, "HDIO_DRIVE_CMD(flushcache)");
2137 #endif /* DO_FLUSHCACHE */
2138         }
2139         if (set_standbynow)
2140         {
2141 #ifndef WIN_STANDBYNOW1
2142 #define WIN_STANDBYNOW1 0xE0
2143 #endif
2144 #ifndef WIN_STANDBYNOW2
2145 #define WIN_STANDBYNOW2 0x94
2146 #endif
2147                 no_scsi();
2148                 if_printf(get_standbynow," issuing standby command\n");
2149                 args[0] = WIN_STANDBYNOW1;
2150                 bb_ioctl_alt(fd, HDIO_DRIVE_CMD, args, WIN_STANDBYNOW2, "HDIO_DRIVE_CMD(standby)");
2151         }
2152         if (set_sleepnow)
2153         {
2154 #ifndef WIN_SLEEPNOW1
2155 #define WIN_SLEEPNOW1 0xE6
2156 #endif
2157 #ifndef WIN_SLEEPNOW2
2158 #define WIN_SLEEPNOW2 0x99
2159 #endif
2160                 no_scsi();
2161                 if_printf(get_sleepnow," issuing sleep command\n");
2162                 args[0] = WIN_SLEEPNOW1;
2163                 bb_ioctl_alt(fd, HDIO_DRIVE_CMD, args, WIN_SLEEPNOW2, "HDIO_DRIVE_CMD(sleep)");
2164         }
2165         if (set_seagate)
2166         {
2167                 args[0] = 0xfb;
2168                 no_scsi_no_xt();
2169                 if_printf(get_seagate," disabling Seagate auto powersaving mode\n");
2170                 bb_ioctl(fd, HDIO_DRIVE_CMD, &args, "HDIO_DRIVE_CMD(seagatepwrsave)");
2171         }
2172         if (set_standby)
2173         {
2174                 args[0] = WIN_SETIDLE1;
2175                 args[1] = standby_requested;
2176                 no_scsi_no_xt();
2177                 if (get_standby)
2178                 {
2179                         printf(" setting standby to %lu", standby_requested);
2180                         interpret_standby(standby_requested);
2181                 }
2182                 bb_ioctl(fd, HDIO_DRIVE_CMD, &args, "HDIO_DRIVE_CMD(setidle1)");
2183         }
2184 #else   /* HDIO_DRIVE_CMD */
2185         if (force_operation)
2186         {
2187                 char buf[512];
2188                 flush_buffer_cache(fd);
2189                 if (-1 == read(fd, buf, sizeof(buf)))
2190                         bb_error_msg("access failed");
2191         }
2192 #endif  /* HDIO_DRIVE_CMD */
2193
2194         if (!flagcount)
2195                 verbose = 1;
2196
2197         if ((verbose && !is_scsi_hd && !is_xt_hd) || get_mult || get_identity)
2198         {
2199                 no_scsi();
2200                 multcount = -1;
2201                 if (ioctl(fd, HDIO_GET_MULTCOUNT, &multcount))
2202                 {
2203                         if ((verbose && !is_xt_hd) || get_mult)
2204                                 bb_perror_msg("HDIO_GET_MULTCOUNT");
2205                 }
2206                 else if (verbose | get_mult)
2207                 {
2208                         printf(" multcount    = %2ld", multcount);
2209                         on_off(multcount);
2210                 }
2211         }
2212         if ((verbose && !is_scsi_hd && !is_xt_hd) || get_io32bit)
2213         {
2214                 no_scsi_no_xt();
2215                 if(!bb_ioctl(fd, HDIO_GET_32BIT, &parm, "HDIO_GET_32BIT"))
2216                 {
2217                         printf(" IO_support   =%3ld (", parm);
2218                         switch (parm)
2219                         {
2220                                 case 0:
2221                                         printf("default ");
2222                                 case 2:
2223                                         printf("16-bit)\n");
2224                                         break;
2225                                 case 1:
2226                                         printf("32-bit)\n");
2227                                         break;
2228                                 case 3:
2229                                         printf("32-bit w/sync)\n");
2230                                         break;
2231                                 case 8:
2232                                         printf("Request-Queue-Bypass)\n");
2233                                         break;
2234                                 default:
2235                                         printf("\?\?\?)\n");
2236                                 /*esac*/
2237                         }
2238                 }
2239         }
2240         if ((verbose && !is_scsi_hd && !is_xt_hd) || get_unmask)
2241         {
2242                 no_scsi_no_xt();
2243                 bb_ioctl_on_off(fd, HDIO_GET_UNMASKINTR,(unsigned long *)parm,
2244                                                 "HDIO_GET_UNMASKINTR"," unmaskirq    = %2ld");
2245         }
2246
2247
2248 #ifdef CONFIG_FEATURE_HDPARM_HDIO_GETSET_DMA
2249         if ((verbose && !is_scsi_hd) || get_dma) {
2250                 no_scsi();
2251                 if(!bb_ioctl(fd, HDIO_GET_DMA, &parm, "HDIO_GET_DMA"))
2252                 {
2253                         printf(" using_dma    = %2ld", parm);
2254                         if (parm == 8)
2255                                 printf(" (DMA-Assisted-PIO)\n");
2256                         else
2257                                 on_off(parm);
2258                 }
2259         }
2260 #endif
2261         if (get_dma_q)
2262         {
2263                 no_scsi();
2264                 bb_ioctl_on_off (fd, HDIO_GET_QDMA,(unsigned long *)parm,
2265                                                   "HDIO_GET_QDMA"," queue_depth  = %2ld");
2266         }
2267         if ((verbose && !is_scsi_hd && !is_xt_hd) || get_keep)
2268         {
2269                 no_scsi_no_xt();
2270                 bb_ioctl_on_off (fd, HDIO_GET_KEEPSETTINGS,(unsigned long *)parm,
2271                                                         "HDIO_GET_KEEPSETTINGS"," keepsettings = %2ld");
2272         }
2273
2274         if (get_nowerr)
2275         {
2276                 no_scsi_no_xt();
2277                 bb_ioctl_on_off  (fd, HDIO_GET_NOWERR,(unsigned long *)&parm,
2278                                                         " HDIO_GET_NOWERR"," nowerr       = %2ld");
2279         }
2280         if (verbose || get_readonly)
2281         {
2282                 bb_ioctl_on_off(fd, BLKROGET,(unsigned long *)parm,
2283                                                   " BLKROGET"," readonly     = %2ld");
2284         }
2285         if ((verbose && !is_scsi_hd) || get_readahead)
2286         {
2287                 bb_ioctl_on_off (fd, BLKRAGET, (unsigned long *) parm,
2288                                                         " BLKRAGET"," readahead    = %2ld");
2289         }
2290         if (verbose || get_geom)
2291         {
2292                 static const char msg[] = " geometry     = %u/%u/%u, sectors = %ld, start = %ld\n";
2293                 static struct hd_geometry g;
2294 #ifdef HDIO_GETGEO_BIG
2295                 static struct hd_big_geometry bg;
2296 #endif
2297
2298                 if (!bb_ioctl(fd, BLKGETSIZE, &parm, "BLKGETSIZE"))
2299                 {
2300 #ifdef HDIO_GETGEO_BIG
2301                         if (!bb_ioctl(fd, HDIO_GETGEO_BIG, &bg, "HDIO_GETGEO_BIG"))
2302                                 printf(msg, bg.cylinders, bg.heads, bg.sectors, parm, bg.start);
2303                         else
2304 #endif
2305                         if (!bb_ioctl(fd, HDIO_GETGEO, &g, "HDIO_GETGEO"))
2306                                 printf(msg, g.cylinders, g.heads, g.sectors, parm, g.start);
2307                 }
2308         }
2309 #ifdef HDIO_DRIVE_CMD
2310         if (get_powermode)
2311         {
2312 #ifndef WIN_CHECKPOWERMODE1
2313 #define WIN_CHECKPOWERMODE1 0xE5
2314 #endif
2315 #ifndef WIN_CHECKPOWERMODE2
2316 #define WIN_CHECKPOWERMODE2 0x98
2317 #endif
2318                 const char *state;
2319
2320                 no_scsi();
2321                 args[0] = WIN_CHECKPOWERMODE1;
2322                 if (bb_ioctl_alt(fd, HDIO_DRIVE_CMD, args, WIN_CHECKPOWERMODE2, 0))
2323                 {
2324                         if (errno != EIO || args[0] != 0 || args[1] != 0)
2325                                 state = "unknown";
2326                         else
2327                                 state = "sleeping";
2328                 }
2329                 else
2330                         state = (args[2] == 255) ? "active/idle" : "standby";
2331
2332                 printf(" drive state is:  %s\n", state);
2333         }
2334 #endif
2335 #ifdef CONFIG_FEATURE_HDPARM_HDIO_DRIVE_RESET
2336         if (perform_reset)
2337         {
2338                 no_scsi_no_xt();
2339                 bb_ioctl(fd, HDIO_DRIVE_RESET, NULL, "HDIO_DRIVE_RESET");
2340         }
2341 #endif /* CONFIG_FEATURE_HDPARM_HDIO_DRIVE_RESET */
2342 #ifdef CONFIG_FEATURE_HDPARM_HDIO_TRISTATE_HWIF
2343         if (perform_tristate)
2344         {
2345                 args[0] = 0;
2346                 args[1] = tristate;
2347                 no_scsi_no_xt();
2348                 bb_ioctl(fd, HDIO_TRISTATE_HWIF, &args, "HDIO_TRISTATE_HWIF");
2349         }
2350 #endif /* CONFIG_FEATURE_HDPARM_HDIO_TRISTATE_HWIF */
2351 #ifdef CONFIG_FEATURE_HDPARM_GET_IDENTITY
2352         if (get_identity)
2353         {
2354                 static struct hd_driveid id;
2355
2356                 no_scsi_no_xt();
2357
2358                 if (!ioctl(fd, HDIO_GET_IDENTITY, &id))
2359                 {
2360                         if (multcount != -1)
2361                         {
2362                                 id.multsect = multcount;
2363                                 id.multsect_valid |= 1;
2364                         }
2365                         else
2366                                 id.multsect_valid &= ~1;
2367                         dump_identity(&id);
2368                 }
2369                 else if (errno == -ENOMSG)
2370                         printf(" no identification info available\n");
2371                 else
2372                         bb_perror_msg("HDIO_GET_IDENTITY");
2373         }
2374
2375         if (get_IDentity)
2376         {
2377                 unsigned char args1[4+512]; /* = { ... } will eat 0.5k of rodata! */
2378                 unsigned i;
2379
2380                 no_scsi_no_xt();
2381
2382                 memset(args1, 0, sizeof(args1));
2383                 args1[0] = WIN_IDENTIFY;
2384                 args1[3] = 1;
2385                 if (bb_ioctl_alt(fd, HDIO_DRIVE_CMD, args1, WIN_PIDENTIFY, "HDIO_DRIVE_CMD(identify)"))
2386                         goto identify_abort;
2387
2388                 for(i=0; i<(sizeof args1)/2; i+=2)
2389                         __le16_to_cpus((uint16_t *)(&args1[i]));
2390                 identify((void *)&args1[4], NULL);
2391 identify_abort:
2392         /* VOID */;
2393         }
2394 #endif
2395 #ifdef CONFIG_FEATURE_HDPARM_HDIO_TRISTATE_HWIF
2396         if (set_busstate)
2397         {
2398                 no_scsi();
2399                 if (get_busstate)
2400                 {
2401                         printf(" setting bus state to %d", busstate);
2402                         bus_state_value(busstate);
2403                 }
2404                 bb_ioctl(fd, HDIO_SET_BUSSTATE, (int *)(unsigned long)busstate, "HDIO_SET_BUSSTATE");
2405         }
2406 #endif
2407 #ifdef CONFIG_FEATURE_HDPARM_HDIO_TRISTATE_HWIF
2408         if (get_busstate)
2409         {
2410                 no_scsi();
2411                 if (!bb_ioctl(fd, HDIO_GET_BUSSTATE, &parm, "HDIO_GET_BUSSTATE"))
2412                 {
2413                         printf(" busstate     = %2ld", parm);
2414                         bus_state_value(parm);
2415                 }
2416         }
2417 #endif
2418         if (reread_partn)
2419                 bb_ioctl(fd, BLKRRPART, NULL, "BLKRRPART");
2420
2421
2422         if (do_ctimings)
2423                 do_time(0,fd);          /*time cache  */
2424         if (do_timings)
2425                 do_time(1,fd);          /*time device */
2426         if (do_flush)
2427                 flush_buffer_cache (fd);
2428         close (fd);
2429 }
2430
2431 static char * GET_NUMBER(char *p, unsigned long *flag, unsigned long *num)
2432 {
2433         *num = 0;
2434         while (isdigit(*p)) {
2435                 *flag = 1;
2436                 *num = (*num * 10) + (*p++ - '0');
2437         }
2438         return p;
2439 }
2440
2441 static char * GET_STRING(char *p, unsigned long *flag, int *num)
2442 {
2443         char *tmpstr;
2444         char name[32];
2445         tmpstr = name;
2446         tmpstr[0] = '\0';
2447         while (isalnum(*p) && (tmpstr - name) < 31) {
2448                 tmpstr[0] = *p++;
2449                 tmpstr[1] = '\0';
2450                 ++tmpstr;
2451         }
2452         *num = translate_xfermode(name);
2453         if (*num == -1)
2454                 *flag = 0;
2455         else
2456                 *flag = 1;
2457         return p;
2458 }
2459
2460 #ifdef CONFIG_FEATURE_HDPARM_GET_IDENTITY
2461 static int fromhex (unsigned char c)
2462 {
2463         if (c >= 'a' && c <= 'f')
2464                 return 10 + (c - 'a');
2465         if (c >= '0' && c <= '9')
2466                 return (c - '0');
2467         bb_error_msg_and_die("bad char: '%c' 0x%02x", c, c);
2468 }
2469
2470 static int identify_from_stdin (void)
2471 {
2472         unsigned short sbuf[800];
2473         unsigned char  buf[1600], *b = (unsigned char *)buf;
2474         int i, count = read(0, buf, 1280);
2475
2476         if (count != 1280)
2477                 bb_error_msg_and_die("read(1280 bytes) failed (rc=%d)", count);
2478         for (i = 0; count >= 4; ++i)
2479         {
2480                 sbuf[i] = (fromhex(b[0]) << 12) | (fromhex(b[1]) << 8) | (fromhex(b[2]) << 4) | fromhex(b[3]);
2481                 __le16_to_cpus((uint16_t *)(&sbuf[i]));
2482                 b += 5;
2483                 count -= 5;
2484         }
2485         identify(sbuf, NULL);
2486         return 0;
2487 }
2488 #endif
2489
2490 static void missing_arg(int arg, char c, char* add)
2491 {
2492         if (!arg)
2493                 bb_error_msg("-%c: missing value %s", c, (add!=NULL)? add :"");
2494 }
2495
2496 /* our main() routine: */
2497 int hdparm_main(int argc, char **argv)
2498 {
2499         char c, *p;
2500
2501         ++argv;
2502         if (!--argc)
2503                 bb_show_usage();
2504
2505         while (argc--)
2506         {
2507 #ifdef CONFIG_FEATURE_HDPARM_GET_IDENTITY
2508                 if (!strcmp("-Istdin", *argv))
2509                 {
2510                         return identify_from_stdin();
2511                 }
2512 #endif
2513                 p = *argv++;
2514                 if (*p == '-')
2515                 {
2516                         if (!*++p)
2517                                 bb_show_usage();
2518                         while ((c = *p++))
2519                         {
2520                                 ++flagcount;
2521                                 switch (c)
2522                                 {
2523                                         case 'V':
2524                                                 /*bb_error_msg_and_die("%s", VERSION);*/
2525                                                 /* We have to return 0 here and not 1 */
2526                                                 printf("%s %s\n",bb_applet_name, VERSION);
2527                                                 return EXIT_SUCCESS;
2528                                         case 'v':
2529                                                 verbose = 1;
2530                                                 break;
2531 #ifdef CONFIG_FEATURE_HDPARM_GET_IDENTITY
2532                                         case 'I':
2533                                                 get_IDentity = 1;
2534                                                 break;
2535                                         case 'i':
2536                                                 get_identity = 1;
2537                                                 break;
2538 #endif
2539                                         case 'g':
2540                                                 get_geom = 1;
2541                                                 break;
2542                                         case 'f':
2543                                                 do_flush = 1;
2544                                                 break;
2545                                         case 'q':
2546                                                 quiet = 1;
2547                                                 noisy = 0;
2548                                                 break;
2549                                         case 'u':
2550                                                 get_unmask = noisy;
2551                                                 noisy = 1;
2552                                                 if (!*p && argc && isdigit(**argv))
2553                                                         p = *argv++, --argc;
2554                                                 if((set_unmask = set_flag(p,'1'))==1)
2555                                                         unmask  = *p++ - '0';
2556                                                 break;
2557 #ifdef CONFIG_FEATURE_HDPARM_HDIO_GETSET_DMA
2558                                         case 'd':
2559                                                 get_dma = noisy;
2560                                                 noisy = 1;
2561                                                 if (!*p && argc && isdigit(**argv))
2562                                                         p = *argv++, --argc;
2563                                                 if((set_dma = set_flag(p,'9'))==1)
2564                                                         dma = *p++ - '0';
2565                                                 break;
2566 #endif /* CONFIG_FEATURE_HDPARM_HDIO_GETSET_DMA */
2567                                         case 'n':
2568                                                 get_nowerr = noisy;
2569                                                 noisy = 1;
2570                                                 if (!*p && argc && isdigit(**argv))
2571                                                         p = *argv++, --argc;
2572                                                 if((set_nowerr = set_flag(p,'1'))==1)
2573                                                         nowerr  = *p++ - '0';
2574                                                 break;
2575                                         case 'p':
2576                                                 noisy_piomode = noisy;
2577                                                 noisy = 1;
2578                                                 if (!*p && argc && isalnum(**argv))
2579                                                         p = *argv++, --argc;
2580                                                 p=GET_STRING(p,&set_piomode,&piomode);
2581                                                 break;
2582                                         case 'r':
2583                                                 get_readonly = noisy;
2584                                                 noisy = 1;
2585                                                 if (!*p && argc && isdigit(**argv))
2586                                                         p = *argv++, --argc;
2587                                                 if((set_readonly = set_flag(p,'1'))==1)
2588                                                         readonly  = *p++ - '0';
2589                                                 break;
2590                                         case 'm':
2591                                                 get_mult = noisy;
2592                                                 noisy = 1;
2593                                                 if (!*p && argc && isalnum(**argv))
2594                                                         p = *argv++, --argc;
2595                                                 p=GET_NUMBER(p,&set_mult,&mult);
2596                                                 break;
2597                                         case 'c':
2598                                                 get_io32bit = noisy;
2599                                                 noisy = 1;
2600                                                 if (!*p && argc && isalnum(**argv))
2601                                                         p = *argv++, --argc;
2602                                                 p=GET_NUMBER(p,&set_io32bit,&io32bit);
2603                                                 break;
2604 #ifdef HDIO_DRIVE_CMD
2605                                         case 'S':
2606                                                 get_standby = noisy;
2607                                                 noisy = 1;
2608                                                 if (!*p && argc && isalnum(**argv))
2609                                                         p = *argv++, --argc;
2610                                                 p=GET_NUMBER(p,&set_standby,&standby_requested);
2611                                                 missing_arg(set_standby, c, NULL);
2612                                                 break;
2613
2614                                         case 'D':
2615                                                 get_defects = noisy;
2616                                                 noisy = 1;
2617                                                 if (!*p && argc && isalnum(**argv))
2618                                                         p = *argv++, --argc;
2619                                                 p=GET_NUMBER(p,&set_defects,&defects);
2620                                                 missing_arg(set_defects, c, NULL);
2621                                                 break;
2622                                         case 'P':
2623                                                 get_prefetch = noisy;
2624                                                 noisy = 1;
2625                                                 if (!*p && argc && isalnum(**argv))
2626                                                         p = *argv++, --argc;
2627                                                 p=GET_NUMBER(p,&set_prefetch,&prefetch);
2628                                                 missing_arg(set_prefetch, c, NULL);
2629                                                 break;
2630
2631                                         case 'X':
2632                                                 get_xfermode = noisy;
2633                                                 noisy = 1;
2634                                                 if (!*p && argc && isalnum(**argv))
2635                                                         p = *argv++, --argc;
2636                                                 p=GET_STRING(p,&set_xfermode,&xfermode_requested);
2637                                                 missing_arg(set_xfermode, c, NULL);
2638                                                 break;
2639
2640                                         case 'K':
2641                                                 get_dkeep = noisy;
2642                                                 noisy = 1;
2643                                                 if (!*p && argc && isdigit(**argv))
2644                                                         p = *argv++, --argc;
2645                                                 if((set_dkeep = set_flag(p,'1'))==1)
2646                                                         dkeep  = *p++ - '0';
2647                                                 else
2648                                                         goto missing_arg_error;
2649                                                 break;
2650
2651                                         case 'A':
2652                                                 get_lookahead = noisy;
2653                                                 noisy = 1;
2654                                                 if (!*p && argc && isdigit(**argv))
2655                                                         p = *argv++, --argc;
2656                                                 if((set_lookahead = set_flag(p,'1'))==1)
2657                                                         lookahead  = *p++ - '0';
2658                                                 else
2659                                                         goto missing_arg_error;
2660                                                 break;
2661
2662                                         case 'L':
2663                                                 get_doorlock = noisy;
2664                                                 noisy = 1;
2665                                                 if (!*p && argc && isdigit(**argv))
2666                                                         p = *argv++, --argc;
2667                                                 if((set_doorlock = set_flag(p,'1'))==1)
2668                                                         doorlock  = *p++ - '0';
2669                                                 else
2670                                                         goto missing_arg_error;
2671                                                 break;
2672
2673                                         case 'W':
2674                                                 get_wcache = noisy;
2675                                                 noisy = 1;
2676                                                 if (!*p && argc && isdigit(**argv))
2677                                                         p = *argv++, --argc;
2678                                                 if((set_wcache = set_flag(p,'1'))==1)
2679                                                         wcache  = *p++ - '0';
2680                                                 else
2681 missing_arg_error:
2682                                                         missing_arg(1, c, "(0/1)");
2683                                                 break;
2684
2685                                         case 'C':
2686                                                 get_powermode = noisy;
2687                                                 noisy = 1;
2688                                                 break;
2689
2690                                         case 'y':
2691                                                 get_standbynow = noisy;
2692                                                 noisy = 1;
2693                                                 set_standbynow = 1;
2694                                                 break;
2695
2696                                         case 'Y':
2697                                                 get_sleepnow = noisy;
2698                                                 noisy = 1;
2699                                                 set_sleepnow = 1;
2700                                                 break;
2701
2702                                         case 'z':
2703                                                 reread_partn = 1;
2704                                                 break;
2705
2706                                         case 'Z':
2707                                                 get_seagate = noisy;
2708                                                 noisy = 1;
2709                                                 set_seagate = 1;
2710                                                 break;
2711 #endif /* HDIO_DRIVE_CMD */
2712                                         case 'k':
2713                                                 get_keep = noisy;
2714                                                 noisy = 1;
2715                                                 if (!*p && argc && isdigit(**argv))
2716                                                         p = *argv++, --argc;
2717                                                 if((set_keep = set_flag(p,'1'))==1)
2718                                                         keep  = *p++ - '0';
2719                                                 break;
2720 #ifdef CONFIG_FEATURE_HDPARM_HDIO_UNREGISTER_HWIF
2721                                         case 'U':
2722                                                 if (!*p && argc && isdigit(**argv))
2723                                                         p = *argv++, --argc;
2724                                                 if(! p)
2725                                                         goto expected_hwif_error; /* "expected hwif_nr" */
2726
2727                                                 sscanf(p++, "%i", &hwif);
2728
2729                                                 unregister_hwif = 1;
2730                                                 break;
2731 #endif /* CONFIG_FEATURE_HDPARM_HDIO_UNREGISTER_HWIF */
2732 #ifdef CONFIG_FEATURE_HDPARM_HDIO_SCAN_HWIF
2733                                         case 'R':
2734                                                 if (!*p && argc && isdigit(**argv))
2735                                                         p = *argv++, --argc;
2736                                                 if(! p)
2737                                                         goto expected_hwif_error; /* "expected hwif_data" */
2738
2739                                                 sscanf(p++, "%i", &hwif_data);
2740
2741                                                 if (argc && isdigit(**argv))
2742                                                         p = *argv++, --argc;
2743                                                 else
2744                                                         goto expected_hwif_error; /* "expected hwif_ctrl" */
2745
2746                                                 sscanf(p, "%i", &hwif_ctrl);
2747
2748                                                 if (argc && isdigit(**argv))
2749                                                         p = *argv++, --argc;
2750                                                 else
2751 #endif /* CONFIG_FEATURE_HDPARM_HDIO_SCAN_HWIF */
2752 #if defined CONFIG_FEATURE_HDPARM_HDIO_UNREGISTER_HWIF || defined CONFIG_FEATURE_HDPARM_HDIO_SCAN_HWIF
2753 expected_hwif_error:
2754                                                         bb_error_msg_and_die("expected hwif value"); /* "expected hwif_irq" */
2755 #endif /* CONFIG_FEATURE_HDPARM_HDIO_UNREGISTER_HWIF || CONFIG_FEATURE_HDPARM_HDIO_SCAN_HWIF */
2756 #ifdef CONFIG_FEATURE_HDPARM_HDIO_SCAN_HWIF
2757
2758                                                 sscanf(p, "%i", &hwif_irq);
2759
2760                                                 *p = '\0';
2761
2762                                                 scan_hwif = 1;
2763                                                 break;
2764 #endif /* CONFIG_FEATURE_HDPARM_HDIO_SCAN_HWIF */
2765                                         case 'Q':
2766 #ifdef HDIO_GET_QDMA
2767                                                 get_dma_q = noisy;
2768                                                 noisy = 1;
2769 #ifdef HDIO_SET_QDMA
2770                                                 if (!*p && argc && isalnum(**argv))
2771                                                         p = *argv++, --argc;
2772                                                 p=GET_NUMBER(p,&set_dma_q,&dma_q);
2773 #ifdef HDIO_GET_QDMA
2774                                                 dma_q = -dma_q;
2775 #endif
2776 #endif
2777 #endif
2778                                                 break;
2779
2780 #ifdef CONFIG_FEATURE_HDPARM_HDIO_DRIVE_RESET
2781                                         case 'w':
2782                                                 perform_reset = 1;
2783                                                 break;
2784 #endif /* CONFIG_FEATURE_HDPARM_HDIO_DRIVE_RESET */
2785 #ifdef CONFIG_FEATURE_HDPARM_HDIO_TRISTATE_HWIF
2786                                         case 'x':
2787                                                 if (!*p && argc && isdigit(**argv))
2788                                                         p = *argv++, --argc;
2789                                                 if((perform_tristate = set_flag(p,'1'))==1)
2790                                                         tristate  = *p++ - '0';
2791                                                 else
2792                                                         missing_arg(1, c, "(0/1)");
2793                                                 break;
2794
2795 #endif /* CONFIG_FEATURE_HDPARM_HDIO_TRISTATE_HWIF */
2796                                         case 'a':
2797                                                 get_readahead = noisy;
2798                                                 noisy = 1;
2799                                                 if (!*p && argc && isalnum(**argv))
2800                                                         p = *argv++, --argc;
2801                                                 p=GET_NUMBER(p,&set_readahead,&Xreadahead);
2802                                                 break;
2803                                         case 'B':
2804                                                 get_apmmode = noisy;
2805                                                 noisy = 1;
2806                                                 if (!*p && argc && isalnum(**argv))
2807                                                         p = *argv++, --argc;
2808                                                 p=GET_NUMBER(p,&set_apmmode,&apmmode);
2809                                                 missing_arg(set_apmmode, c, "(1-255)");
2810                                                 break;
2811                                         case 't':
2812                                                 do_timings = 1;
2813                                                 do_flush = 1;
2814                                                 break;
2815                                         case 'T':
2816                                                 do_ctimings = 1;
2817                                                 do_flush = 1;
2818                                                 break;
2819 #ifdef CONFIG_FEATURE_HDPARM_HDIO_TRISTATE_HWIF
2820                                         case 'b':
2821                                                 get_busstate = noisy;
2822                                                 noisy = 1;
2823                                                 if (!*p && argc && isdigit(**argv))
2824                                                         p = *argv++, --argc;
2825                                                 if((set_busstate = set_flag(p,'2'))==1)
2826                                                         busstate  = *p++ - '0';
2827                                                 break;
2828 #endif
2829                                         case 'h':
2830                                         default:
2831                                                 bb_show_usage();
2832                                 }
2833                         }
2834                         if (!argc)
2835                                 bb_show_usage();
2836                 } else {
2837                         process_dev (p);
2838                 }
2839         }
2840         return 0 ;
2841 }