1 #include <linux/types.h>
2 #include <linux/string.h>
3 #include <linux/kernel.h>
4 #include <linux/interrupt.h>
6 #include <linux/bitops.h>
9 * ide_toggle_bounce - handle bounce buffering
10 * @drive: drive to update
13 * Enable or disable bounce buffering for the device. Drives move
14 * between PIO and DMA and that changes the rules we need.
17 void ide_toggle_bounce(ide_drive_t *drive, int on)
19 u64 addr = BLK_BOUNCE_HIGH; /* dma64_addr_t */
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;
26 if (dev && dev->dma_mask)
27 addr = *dev->dma_mask;
31 blk_queue_bounce_limit(drive->queue, addr);
34 u64 ide_get_lba_addr(struct ide_cmd *cmd, int lba48)
36 struct ide_taskfile *tf = &cmd->tf;
39 low = (tf->lbah << 16) | (tf->lbam << 8) | tf->lbal;
42 high = (tf->lbah << 16) | (tf->lbam << 8) | tf->lbal;
44 high = tf->device & 0xf;
46 return ((u64)high << 24) | low;
48 EXPORT_SYMBOL_GPL(ide_get_lba_addr);
50 static void ide_dump_sector(ide_drive_t *drive)
53 struct ide_taskfile *tf = &cmd.tf;
54 u8 lba48 = !!(drive->dev_flags & IDE_DFLAG_LBA48);
56 memset(&cmd, 0, sizeof(cmd));
58 cmd.valid.in.tf = IDE_VALID_LBA;
59 cmd.valid.in.hob = IDE_VALID_LBA;
60 cmd.tf_flags = IDE_TFLAG_LBA48;
62 cmd.valid.in.tf = IDE_VALID_LBA | IDE_VALID_DEVICE;
64 ide_tf_readback(drive, &cmd);
66 if (lba48 || (tf->device & ATA_LBA))
67 printk(KERN_CONT ", LBAsect=%llu",
68 (unsigned long long)ide_get_lba_addr(&cmd, lba48));
70 printk(KERN_CONT ", CHS=%d/%d/%d", (tf->lbah << 8) + tf->lbam,
71 tf->device & 0xf, tf->lbal);
74 static void ide_dump_ata_error(ide_drive_t *drive, u8 err)
76 printk(KERN_CONT "{ ");
77 if (err & ATA_ABORTED)
78 printk(KERN_CONT "DriveStatusError ");
80 printk(KERN_CONT "%s",
81 (err & ATA_ABORTED) ? "BadCRC " : "BadSector ");
83 printk(KERN_CONT "UncorrectableError ");
85 printk(KERN_CONT "SectorIdNotFound ");
87 printk(KERN_CONT "TrackZeroNotFound ");
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;
95 ide_dump_sector(drive);
98 printk(KERN_CONT ", sector=%llu",
99 (unsigned long long)blk_rq_pos(rq));
101 printk(KERN_CONT "\n");
104 static void ide_dump_atapi_error(ide_drive_t *drive, u8 err)
106 printk(KERN_CONT "{ ");
108 printk(KERN_CONT "IllegalLengthIndication ");
110 printk(KERN_CONT "EndOfMedia ");
111 if (err & ATA_ABORTED)
112 printk(KERN_CONT "AbortedCommand ");
114 printk(KERN_CONT "MediaChangeRequested ");
116 printk(KERN_CONT "LastFailedSense=0x%02x ",
117 (err & ATAPI_LFS) >> 4);
118 printk(KERN_CONT "}\n");
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
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.
132 u8 ide_dump_status(ide_drive_t *drive, const char *msg, u8 stat)
136 printk(KERN_ERR "%s: %s: status=0x%02x { ", drive->name, msg, stat);
138 printk(KERN_CONT "Busy ");
141 printk(KERN_CONT "DriveReady ");
143 printk(KERN_CONT "DeviceFault ");
145 printk(KERN_CONT "SeekComplete ");
147 printk(KERN_CONT "DataRequest ");
149 printk(KERN_CONT "CorrectedError ");
151 printk(KERN_CONT "Index ");
153 printk(KERN_CONT "Error ");
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);
162 ide_dump_atapi_error(drive, err);
165 printk(KERN_ERR "%s: possibly failed opcode: 0x%02x\n",
166 drive->name, drive->hwif->cmd.tf.command);
170 EXPORT_SYMBOL(ide_dump_status);