172 lines
4.4 KiB
C
172 lines
4.4 KiB
C
|
#include <linux/types.h>
|
||
|
|
#include <linux/string.h>
|
||
|
|
#include <linux/kernel.h>
|
||
|
|
#include <linux/export.h>
|
||
|
|
#include <linux/interrupt.h>
|
||
|
|
#include <linux/ide.h>
|
||
|
|
#include <linux/bitops.h>
|
||
|
|
|
||
|
|
/**
|
||
|
|
* ide_toggle_bounce - handle bounce buffering
|
||
|
|
* @drive: drive to update
|
||
|
|
* @on: on/off boolean
|
||
|
|
*
|
||
|
|
* Enable or disable bounce buffering for the device. Drives move
|
||
|
|
* between PIO and DMA and that changes the rules we need.
|
||
|
|
*/
|
||
|
|
|
||
|
|
void ide_toggle_bounce(ide_drive_t *drive, int on)
|
||
|
|
{
|
||
|
|
u64 addr = BLK_BOUNCE_HIGH; /* dma64_addr_t */
|
||
|
|
|
||
|
|
if (!PCI_DMA_BUS_IS_PHYS) {
|
||
|
|
addr = BLK_BOUNCE_ANY;
|
||
|
|
} else if (on && drive->media == ide_disk) {
|
||
|
|
struct device *dev = drive->hwif->dev;
|
||
|
|
|
||
|
|
if (dev && dev->dma_mask)
|
||
|
|
addr = *dev->dma_mask;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (drive->queue)
|
||
|
|
blk_queue_bounce_limit(drive->queue, addr);
|
||
|
|
}
|
||
|
|
|
||
|
|
u64 ide_get_lba_addr(struct ide_cmd *cmd, int lba48)
|
||
|
|
{
|
||
|
|
struct ide_taskfile *tf = &cmd->tf;
|
||
|
|
u32 high, low;
|
||
|
|
|
||
|
|
low = (tf->lbah << 16) | (tf->lbam << 8) | tf->lbal;
|
||
|
|
if (lba48) {
|
||
|
|
tf = &cmd->hob;
|
||
|
|
high = (tf->lbah << 16) | (tf->lbam << 8) | tf->lbal;
|
||
|
|
} else
|
||
|
|
high = tf->device & 0xf;
|
||
|
|
|
||
|
|
return ((u64)high << 24) | low;
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL_GPL(ide_get_lba_addr);
|
||
|
|
|
||
|
|
static void ide_dump_sector(ide_drive_t *drive)
|
||
|
|
{
|
||
|
|
struct ide_cmd cmd;
|
||
|
|
struct ide_taskfile *tf = &cmd.tf;
|
||
|
|
u8 lba48 = !!(drive->dev_flags & IDE_DFLAG_LBA48);
|
||
|
|
|
||
|
|
memset(&cmd, 0, sizeof(cmd));
|
||
|
|
if (lba48) {
|
||
|
|
cmd.valid.in.tf = IDE_VALID_LBA;
|
||
|
|
cmd.valid.in.hob = IDE_VALID_LBA;
|
||
|
|
cmd.tf_flags = IDE_TFLAG_LBA48;
|
||
|
|
} else
|
||
|
|
cmd.valid.in.tf = IDE_VALID_LBA | IDE_VALID_DEVICE;
|
||
|
|
|
||
|
|
ide_tf_readback(drive, &cmd);
|
||
|
|
|
||
|
|
if (lba48 || (tf->device & ATA_LBA))
|
||
|
|
printk(KERN_CONT ", LBAsect=%llu",
|
||
|
|
(unsigned long long)ide_get_lba_addr(&cmd, lba48));
|
||
|
|
else
|
||
|
|
printk(KERN_CONT ", CHS=%d/%d/%d", (tf->lbah << 8) + tf->lbam,
|
||
|
|
tf->device & 0xf, tf->lbal);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void ide_dump_ata_error(ide_drive_t *drive, u8 err)
|
||
|
|
{
|
||
|
|
printk(KERN_CONT "{ ");
|
||
|
|
if (err & ATA_ABORTED)
|
||
|
|
printk(KERN_CONT "DriveStatusError ");
|
||
|
|
if (err & ATA_ICRC)
|
||
|
|
printk(KERN_CONT "%s",
|
||
|
|
(err & ATA_ABORTED) ? "BadCRC " : "BadSector ");
|
||
|
|
if (err & ATA_UNC)
|
||
|
|
printk(KERN_CONT "UncorrectableError ");
|
||
|
|
if (err & ATA_IDNF)
|
||
|
|
printk(KERN_CONT "SectorIdNotFound ");
|
||
|
|
if (err & ATA_TRK0NF)
|
||
|
|
printk(KERN_CONT "TrackZeroNotFound ");
|
||
|
|
if (err & ATA_AMNF)
|
||
|
|
printk(KERN_CONT "AddrMarkNotFound ");
|
||
|
|
printk(KERN_CONT "}");
|
||
|
|
if ((err & (ATA_BBK | ATA_ABORTED)) == ATA_BBK ||
|
||
|
|
(err & (ATA_UNC | ATA_IDNF | ATA_AMNF))) {
|
||
|
|
struct request *rq = drive->hwif->rq;
|
||
|
|
|
||
|
|
ide_dump_sector(drive);
|
||
|
|
|
||
|
|
if (rq)
|
||
|
|
printk(KERN_CONT ", sector=%llu",
|
||
|
|
(unsigned long long)blk_rq_pos(rq));
|
||
|
|
}
|
||
|
|
printk(KERN_CONT "\n");
|
||
|
|
}
|
||
|
|
|
||
|
|
static void ide_dump_atapi_error(ide_drive_t *drive, u8 err)
|
||
|
|
{
|
||
|
|
printk(KERN_CONT "{ ");
|
||
|
|
if (err & ATAPI_ILI)
|
||
|
|
printk(KERN_CONT "IllegalLengthIndication ");
|
||
|
|
if (err & ATAPI_EOM)
|
||
|
|
printk(KERN_CONT "EndOfMedia ");
|
||
|
|
if (err & ATA_ABORTED)
|
||
|
|
printk(KERN_CONT "AbortedCommand ");
|
||
|
|
if (err & ATA_MCR)
|
||
|
|
printk(KERN_CONT "MediaChangeRequested ");
|
||
|
|
if (err & ATAPI_LFS)
|
||
|
|
printk(KERN_CONT "LastFailedSense=0x%02x ",
|
||
|
|
(err & ATAPI_LFS) >> 4);
|
||
|
|
printk(KERN_CONT "}\n");
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* ide_dump_status - translate ATA/ATAPI error
|
||
|
|
* @drive: drive that status applies to
|
||
|
|
* @msg: text message to print
|
||
|
|
* @stat: status byte to decode
|
||
|
|
*
|
||
|
|
* Error reporting, in human readable form (luxurious, but a memory hog).
|
||
|
|
* Combines the drive name, message and status byte to provide a
|
||
|
|
* user understandable explanation of the device error.
|
||
|
|
*/
|
||
|
|
|
||
|
|
u8 ide_dump_status(ide_drive_t *drive, const char *msg, u8 stat)
|
||
|
|
{
|
||
|
|
u8 err = 0;
|
||
|
|
|
||
|
|
printk(KERN_ERR "%s: %s: status=0x%02x { ", drive->name, msg, stat);
|
||
|
|
if (stat & ATA_BUSY)
|
||
|
|
printk(KERN_CONT "Busy ");
|
||
|
|
else {
|
||
|
|
if (stat & ATA_DRDY)
|
||
|
|
printk(KERN_CONT "DriveReady ");
|
||
|
|
if (stat & ATA_DF)
|
||
|
|
printk(KERN_CONT "DeviceFault ");
|
||
|
|
if (stat & ATA_DSC)
|
||
|
|
printk(KERN_CONT "SeekComplete ");
|
||
|
|
if (stat & ATA_DRQ)
|
||
|
|
printk(KERN_CONT "DataRequest ");
|
||
|
|
if (stat & ATA_CORR)
|
||
|
|
printk(KERN_CONT "CorrectedError ");
|
||
|
|
if (stat & ATA_SENSE)
|
||
|
|
printk(KERN_CONT "Sense ");
|
||
|
|
if (stat & ATA_ERR)
|
||
|
|
printk(KERN_CONT "Error ");
|
||
|
|
}
|
||
|
|
printk(KERN_CONT "}\n");
|
||
|
|
if ((stat & (ATA_BUSY | ATA_ERR)) == ATA_ERR) {
|
||
|
|
err = ide_read_error(drive);
|
||
|
|
printk(KERN_ERR "%s: %s: error=0x%02x ", drive->name, msg, err);
|
||
|
|
if (drive->media == ide_disk)
|
||
|
|
ide_dump_ata_error(drive, err);
|
||
|
|
else
|
||
|
|
ide_dump_atapi_error(drive, err);
|
||
|
|
}
|
||
|
|
|
||
|
|
printk(KERN_ERR "%s: possibly failed opcode: 0x%02x\n",
|
||
|
|
drive->name, drive->hwif->cmd.tf.command);
|
||
|
|
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL(ide_dump_status);
|