LXR linux/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
  10u64 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}
  24EXPORT_SYMBOL_GPL(ide_get_lba_addr);
  25
  26static 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
  50static 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
  80static 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
 108u8 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}
 146EXPORT_SYMBOL(ide_dump_status);
 147