1#include <linux/types.h> 2#include <linux/string.h> 3#include <linux/kernel.h> 4#include <linux/interrupt.h> 5#include <linux/ide.h> 6#include <linux/bitops.h> 7 8/** 9 * ide_toggle_bounce - handle bounce buffering 10 * @drive: drive to update 11 * @on: on/off boolean 12 * 13 * Enable or disable bounce buffering for the device. Drives move 14 * between PIO and DMA and that changes the rules we need. 15 */ 16 17void ide_toggle_bounce(ide_drive_t *drive, int on) 18{ 19 u64 addr = BLK_BOUNCE_HIGH; /* dma64_addr_t */ 20 21 if (!PCI_DMA_BUS_IS_PHYS) { 22 addr = BLK_BOUNCE_ANY; 23 } else if (on && drive->media == ide_disk) { 24 struct device *dev = drive->hwif->dev; 25 26 if (dev && dev->dma_mask) 27 addr = *dev->dma_mask; 28 } 29 30 if (drive->queue) 31 blk_queue_bounce_limit(drive->queue, addr); 32} 33 34u64 ide_get_lba_addr(struct ide_cmd *cmd, int lba48) 35{ 36 struct ide_taskfile *tf = &cmd->tf; 37 u32 high, low; 38 39 low = (tf->lbah << 16) | (tf->lbam << 8) | tf->lbal; 40 if (lba48) { 41 tf = &cmd->hob; 42 high = (tf->lbah << 16) | (tf->lbam << 8) | tf->lbal; 43 } else 44 high = tf->device & 0xf; 45 46 return ((u64)high << 24) | low; 47} 48EXPORT_SYMBOL_GPL(ide_get_lba_addr); 49 50static void ide_dump_sector(ide_drive_t *drive) 51{ 52 struct ide_cmd cmd; 53 struct ide_taskfile *tf = &cmd.tf; 54 u8 lba48 = !!(drive->dev_flags & IDE_DFLAG_LBA48); 55 56 memset(&cmd, 0, sizeof(cmd)); 57 if (lba48) { 58 cmd.valid.in.tf = IDE_VALID_LBA; 59 cmd.valid.in.hob = IDE_VALID_LBA; 60 cmd.tf_flags = IDE_TFLAG_LBA48; 61 } else 62 cmd.valid.in.tf = IDE_VALID_LBA | IDE_VALID_DEVICE; 63 64 ide_tf_readback(drive, &cmd); 65 66 if (lba48 || (tf->device & ATA_LBA)) 67 printk(KERN_CONT ", LBAsect=%llu", 68 (unsigned long long)ide_get_lba_addr(&cmd, lba48)); 69 else 70 printk(KERN_CONT ", CHS=%d/%d/%d", (tf->lbah << 8) + tf->lbam, 71 tf->device & 0xf, tf->lbal); 72} 73 74static void ide_dump_ata_error(ide_drive_t *drive, u8 err) 75{ 76 printk(KERN_CONT "{ "); 77 if (err & ATA_ABORTED) 78 printk(KERN_CONT "DriveStatusError "); 79 if (err & ATA_ICRC) 80 printk(KERN_CONT "%s", 81 (err & ATA_ABORTED) ? "BadCRC " : "BadSector "); 82 if (err & ATA_UNC) 83 printk(KERN_CONT "UncorrectableError "); 84 if (err & ATA_IDNF) 85 printk(KERN_CONT "SectorIdNotFound "); 86 if (err & ATA_TRK0NF) 87 printk(KERN_CONT "TrackZeroNotFound "); 88 if (err & ATA_AMNF) 89 printk(KERN_CONT "AddrMarkNotFound "); 90 printk(KERN_CONT "}"); 91 if ((err & (ATA_BBK | ATA_ABORTED)) == ATA_BBK || 92 (err & (ATA_UNC | ATA_IDNF | ATA_AMNF))) { 93 struct request *rq = drive->hwif->rq; 94 95 ide_dump_sector(drive); 96 97 if (rq) 98 printk(KERN_CONT ", sector=%llu", 99 (unsigned long long)blk_rq_pos(rq)); 100 } 101 printk(KERN_CONT "\n"); 102} 103 104static void ide_dump_atapi_error(ide_drive_t *drive, u8 err) 105{ 106 printk(KERN_CONT "{ "); 107 if (err & ATAPI_ILI) 108 printk(KERN_CONT "IllegalLengthIndication "); 109 if (err & ATAPI_EOM) 110 printk(KERN_CONT "EndOfMedia "); 111 if (err & ATA_ABORTED) 112 printk(KERN_CONT "AbortedCommand "); 113 if (err & ATA_MCR) 114 printk(KERN_CONT "MediaChangeRequested "); 115 if (err & ATAPI_LFS) 116 printk(KERN_CONT "LastFailedSense=0x%02x ", 117 (err & ATAPI_LFS) >> 4); 118 printk(KERN_CONT "}\n"); 119} 120 121/** 122 * ide_dump_status - translate ATA/ATAPI error 123 * @drive: drive that status applies to 124 * @msg: text message to print 125 * @stat: status byte to decode 126 * 127 * Error reporting, in human readable form (luxurious, but a memory hog). 128 * Combines the drive name, message and status byte to provide a 129 * user understandable explanation of the device error. 130 */ 131 132u8 ide_dump_status(ide_drive_t *drive, const char *msg, u8 stat) 133{ 134 u8 err = 0; 135 136 printk(KERN_ERR "%s: %s: status=0x%02x { ", drive->name, msg, stat); 137 if (stat & ATA_BUSY) 138 printk(KERN_CONT "Busy "); 139 else { 140 if (stat & ATA_DRDY) 141 printk(KERN_CONT "DriveReady "); 142 if (stat & ATA_DF) 143 printk(KERN_CONT "DeviceFault "); 144 if (stat & ATA_DSC) 145 printk(KERN_CONT "SeekComplete "); 146 if (stat & ATA_DRQ) 147 printk(KERN_CONT "DataRequest "); 148 if (stat & ATA_CORR) 149 printk(KERN_CONT "CorrectedError "); 150 if (stat & ATA_IDX) 151 printk(KERN_CONT "Index "); 152 if (stat & ATA_ERR) 153 printk(KERN_CONT "Error "); 154 } 155 printk(KERN_CONT "}\n"); 156 if ((stat & (ATA_BUSY | ATA_ERR)) == ATA_ERR) { 157 err = ide_read_error(drive); 158 printk(KERN_ERR "%s: %s: error=0x%02x ", drive->name, msg, err); 159 if (drive->media == ide_disk) 160 ide_dump_ata_error(drive, err); 161 else 162 ide_dump_atapi_error(drive, err); 163 } 164 165 printk(KERN_ERR "%s: possibly failed opcode: 0x%02x\n", 166 drive->name, drive->hwif->cmd.tf.command); 167 168 return err; 169} 170EXPORT_SYMBOL(ide_dump_status); 171