drivers/ide/ide-lib.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 #include <linux/types.h>
   3 #include <linux/string.h>
   4 #include <linux/kernel.h>
   5 #include <linux/export.h>
   6 #include <linux/interrupt.h>
   7 #include <linux/ide.h>
   8 #include <linux/bitops.h>
   9
  10 u64 ide_get_lba_addr(struct ide_cmd *cmd, int lba48)
  11 {
  12         struct ide_taskfile *tf = &cmd->tf;
  13         u32 high, low;
  14
  15         low  = (tf->lbah << 16) | (tf->lbam << 8) | tf->lbal;
  16         if (lba48) {
  17                 tf = &cmd->hob;
  18                 high = (tf->lbah << 16) | (tf->lbam << 8) | tf->lbal;
  19         } else
  20                 high = tf->device & 0xf;
  21
  22         return ((u64)high << 24) | low;
  23 }
  24 EXPORT_SYMBOL_GPL(ide_get_lba_addr);
  25
  26 static void ide_dump_sector(ide_drive_t *drive)
  27 {
  28         struct ide_cmd cmd;
  29         struct ide_taskfile *tf = &cmd.tf;
  30         u8 lba48 = !!(drive->dev_flags & IDE_DFLAG_LBA48);
  31
  32         memset(&cmd, 0, sizeof(cmd));
  33         if (lba48) {
  34                 cmd.valid.in.tf  = IDE_VALID_LBA;
  35                 cmd.valid.in.hob = IDE_VALID_LBA;
  36                 cmd.tf_flags = IDE_TFLAG_LBA48;
  37         } else
  38                 cmd.valid.in.tf  = IDE_VALID_LBA | IDE_VALID_DEVICE;
  39
  40         ide_tf_readback(drive, &cmd);
  41
  42         if (lba48 || (tf->device & ATA_LBA))
  43                 printk(KERN_CONT ", LBAsect=%llu",
  44                         (unsigned long long)ide_get_lba_addr(&cmd, lba48));
  45         else
  46                 printk(KERN_CONT ", CHS=%d/%d/%d", (tf->lbah << 8) + tf->lbam,
  47                         tf->device & 0xf, tf->lbal);
  48 }
  49
  50 static void ide_dump_ata_error(ide_drive_t *drive, u8 err)
  51 {
  52         printk(KERN_CONT "{ ");
  53         if (err & ATA_ABORTED)
  54                 printk(KERN_CONT "DriveStatusError ");
  55         if (err & ATA_ICRC)
  56                 printk(KERN_CONT "%s",
  57                         (err & ATA_ABORTED) ? "BadCRC " : "BadSector ");
  58         if (err & ATA_UNC)
  59                 printk(KERN_CONT "UncorrectableError ");
  60         if (err & ATA_IDNF)
  61                 printk(KERN_CONT "SectorIdNotFound ");
  62         if (err & ATA_TRK0NF)
  63                 printk(KERN_CONT "TrackZeroNotFound ");
  64         if (err & ATA_AMNF)
  65                 printk(KERN_CONT "AddrMarkNotFound ");
  66         printk(KERN_CONT "}");
  67         if ((err & (ATA_BBK | ATA_ABORTED)) == ATA_BBK ||
  68             (err & (ATA_UNC | ATA_IDNF | ATA_AMNF))) {
  69                 struct request *rq = drive->hwif->rq;
  70
  71                 ide_dump_sector(drive);
  72
  73                 if (rq)
  74                         printk(KERN_CONT ", sector=%llu",
  75                                (unsigned long long)blk_rq_pos(rq));
  76         }
  77         printk(KERN_CONT "\n");
  78 }
  79
  80 static void ide_dump_atapi_error(ide_drive_t *drive, u8 err)
  81 {
  82         printk(KERN_CONT "{ ");
  83         if (err & ATAPI_ILI)
  84                 printk(KERN_CONT "IllegalLengthIndication ");
  85         if (err & ATAPI_EOM)
  86                 printk(KERN_CONT "EndOfMedia ");
  87         if (err & ATA_ABORTED)
  88                 printk(KERN_CONT "AbortedCommand ");
  89         if (err & ATA_MCR)
  90                 printk(KERN_CONT "MediaChangeRequested ");
  91         if (err & ATAPI_LFS)
  92                 printk(KERN_CONT "LastFailedSense=0x%02x ",
  93                         (err & ATAPI_LFS) >> 4);
  94         printk(KERN_CONT "}\n");
  95 }
  96
  97 /**
  98  *      ide_dump_status         -       translate ATA/ATAPI error
  99  *      @drive: drive that status applies to
 100  *      @msg: text message to print
 101  *      @stat: status byte to decode
 102  *
 103  *      Error reporting, in human readable form (luxurious, but a memory hog).
 104  *      Combines the drive name, message and status byte to provide a
 105  *      user understandable explanation of the device error.
 106  */
 107
 108 u8 ide_dump_status(ide_drive_t *drive, const char *msg, u8 stat)
 109 {
 110         u8 err = 0;
 111
 112         printk(KERN_ERR "%s: %s: status=0x%02x { ", drive->name, msg, stat);
 113         if (stat & ATA_BUSY)
 114                 printk(KERN_CONT "Busy ");
 115         else {
 116                 if (stat & ATA_DRDY)
 117                         printk(KERN_CONT "DriveReady ");
 118                 if (stat & ATA_DF)
 119                         printk(KERN_CONT "DeviceFault ");
 120                 if (stat & ATA_DSC)
 121                         printk(KERN_CONT "SeekComplete ");
 122                 if (stat & ATA_DRQ)
 123                         printk(KERN_CONT "DataRequest ");
 124                 if (stat & ATA_CORR)
 125                         printk(KERN_CONT "CorrectedError ");
 126                 if (stat & ATA_SENSE)
 127                         printk(KERN_CONT "Sense ");
 128                 if (stat & ATA_ERR)
 129                         printk(KERN_CONT "Error ");
 130         }
 131         printk(KERN_CONT "}\n");
 132         if ((stat & (ATA_BUSY | ATA_ERR)) == ATA_ERR) {
 133                 err = ide_read_error(drive);
 134                 printk(KERN_ERR "%s: %s: error=0x%02x ", drive->name, msg, err);
 135                 if (drive->media == ide_disk)
 136                         ide_dump_ata_error(drive, err);
 137                 else
 138                         ide_dump_atapi_error(drive, err);
 139         }
 140
 141         printk(KERN_ERR "%s: possibly failed opcode: 0x%02x\n",
 142                 drive->name, drive->hwif->cmd.tf.command);
 143
 144         return err;
 145 }
 146 EXPORT_SYMBOL(ide_dump_status);