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 static void ide_dump_opcode(ide_drive_t *drive)
36 struct request *rq = drive->hwif->rq;
37 struct ide_cmd *cmd = NULL;
42 if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE)
45 printk(KERN_ERR "ide: failed opcode was: ");
47 printk(KERN_CONT "unknown\n");
49 printk(KERN_CONT "0x%02x\n", cmd->tf.command);
52 u64 ide_get_lba_addr(struct ide_taskfile *tf, int lba48)
57 high = (tf->hob_lbah << 16) | (tf->hob_lbam << 8) |
60 high = tf->device & 0xf;
61 low = (tf->lbah << 16) | (tf->lbam << 8) | tf->lbal;
63 return ((u64)high << 24) | low;
65 EXPORT_SYMBOL_GPL(ide_get_lba_addr);
67 static void ide_dump_sector(ide_drive_t *drive)
70 struct ide_taskfile *tf = &cmd.tf;
71 u8 lba48 = !!(drive->dev_flags & IDE_DFLAG_LBA48);
73 memset(&cmd, 0, sizeof(cmd));
75 cmd.valid.in.tf = IDE_VALID_LBA;
76 cmd.valid.in.hob = IDE_VALID_LBA;
77 cmd.tf_flags = IDE_TFLAG_LBA48;
79 cmd.valid.in.tf = IDE_VALID_LBA | IDE_VALID_DEVICE;
81 drive->hwif->tp_ops->tf_read(drive, &cmd);
83 if (lba48 || (tf->device & ATA_LBA))
84 printk(KERN_CONT ", LBAsect=%llu",
85 (unsigned long long)ide_get_lba_addr(tf, lba48));
87 printk(KERN_CONT ", CHS=%d/%d/%d", (tf->lbah << 8) + tf->lbam,
88 tf->device & 0xf, tf->lbal);
91 static void ide_dump_ata_error(ide_drive_t *drive, u8 err)
93 printk(KERN_ERR "{ ");
94 if (err & ATA_ABORTED)
95 printk(KERN_CONT "DriveStatusError ");
97 printk(KERN_CONT "%s",
98 (err & ATA_ABORTED) ? "BadCRC " : "BadSector ");
100 printk(KERN_CONT "UncorrectableError ");
102 printk(KERN_CONT "SectorIdNotFound ");
103 if (err & ATA_TRK0NF)
104 printk(KERN_CONT "TrackZeroNotFound ");
106 printk(KERN_CONT "AddrMarkNotFound ");
107 printk(KERN_CONT "}");
108 if ((err & (ATA_BBK | ATA_ABORTED)) == ATA_BBK ||
109 (err & (ATA_UNC | ATA_IDNF | ATA_AMNF))) {
110 struct request *rq = drive->hwif->rq;
112 ide_dump_sector(drive);
115 printk(KERN_CONT ", sector=%llu",
116 (unsigned long long)rq->sector);
118 printk(KERN_CONT "\n");
121 static void ide_dump_atapi_error(ide_drive_t *drive, u8 err)
123 printk(KERN_ERR "{ ");
125 printk(KERN_CONT "IllegalLengthIndication ");
127 printk(KERN_CONT "EndOfMedia ");
128 if (err & ATA_ABORTED)
129 printk(KERN_CONT "AbortedCommand ");
131 printk(KERN_CONT "MediaChangeRequested ");
133 printk(KERN_CONT "LastFailedSense=0x%02x ",
134 (err & ATAPI_LFS) >> 4);
135 printk(KERN_CONT "}\n");
139 * ide_dump_status - translate ATA/ATAPI error
140 * @drive: drive that status applies to
141 * @msg: text message to print
142 * @stat: status byte to decode
144 * Error reporting, in human readable form (luxurious, but a memory hog).
145 * Combines the drive name, message and status byte to provide a
146 * user understandable explanation of the device error.
149 u8 ide_dump_status(ide_drive_t *drive, const char *msg, u8 stat)
153 printk(KERN_ERR "%s: %s: status=0x%02x { ", drive->name, msg, stat);
155 printk(KERN_CONT "Busy ");
158 printk(KERN_CONT "DriveReady ");
160 printk(KERN_CONT "DeviceFault ");
162 printk(KERN_CONT "SeekComplete ");
164 printk(KERN_CONT "DataRequest ");
166 printk(KERN_CONT "CorrectedError ");
168 printk(KERN_CONT "Index ");
170 printk(KERN_CONT "Error ");
172 printk(KERN_CONT "}\n");
173 if ((stat & (ATA_BUSY | ATA_ERR)) == ATA_ERR) {
174 err = ide_read_error(drive);
175 printk(KERN_ERR "%s: %s: error=0x%02x ", drive->name, msg, err);
176 if (drive->media == ide_disk)
177 ide_dump_ata_error(drive, err);
179 ide_dump_atapi_error(drive, err);
181 ide_dump_opcode(drive);
184 EXPORT_SYMBOL(ide_dump_status);