libata-eh.c (bdcddf95e82b1c4e370fc1196b1f4f50f775dab4) libata-eh.c (eab6ee1ce3c4678224d70338134f7a02005768cb)
1/*
2 * libata-eh.c - libata error handling
3 *
4 * Maintained by: Tejun Heo <tj@kernel.org>
5 * Please ALWAYS copy linux-ide@vger.kernel.org
6 * on emails.
7 *
8 * Copyright 2006 Tejun Heo <htejun@gmail.com>

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1502 * RETURNS:
1503 * 0 on success, AC_ERR_* mask otherwise.
1504 */
1505unsigned int ata_read_log_page(struct ata_device *dev, u8 log,
1506 u8 page, void *buf, unsigned int sectors)
1507{
1508 struct ata_taskfile tf;
1509 unsigned int err_mask;
1/*
2 * libata-eh.c - libata error handling
3 *
4 * Maintained by: Tejun Heo <tj@kernel.org>
5 * Please ALWAYS copy linux-ide@vger.kernel.org
6 * on emails.
7 *
8 * Copyright 2006 Tejun Heo <htejun@gmail.com>

--- 1493 unchanged lines hidden (view full) ---

1502 * RETURNS:
1503 * 0 on success, AC_ERR_* mask otherwise.
1504 */
1505unsigned int ata_read_log_page(struct ata_device *dev, u8 log,
1506 u8 page, void *buf, unsigned int sectors)
1507{
1508 struct ata_taskfile tf;
1509 unsigned int err_mask;
1510 bool dma = false;
1510
1511 DPRINTK("read log page - log 0x%x, page 0x%x\n", log, page);
1512
1511
1512 DPRINTK("read log page - log 0x%x, page 0x%x\n", log, page);
1513
1514retry:
1513 ata_tf_init(dev, &tf);
1515 ata_tf_init(dev, &tf);
1514 if (dev->dma_mode && ata_id_has_read_log_dma_ext(dev->id)) {
1516 if (dev->dma_mode && ata_id_has_read_log_dma_ext(dev->id) &&
1517 !(dev->horkage & ATA_HORKAGE_NO_NCQ_LOG)) {
1515 tf.command = ATA_CMD_READ_LOG_DMA_EXT;
1516 tf.protocol = ATA_PROT_DMA;
1518 tf.command = ATA_CMD_READ_LOG_DMA_EXT;
1519 tf.protocol = ATA_PROT_DMA;
1520 dma = true;
1517 } else {
1518 tf.command = ATA_CMD_READ_LOG_EXT;
1519 tf.protocol = ATA_PROT_PIO;
1521 } else {
1522 tf.command = ATA_CMD_READ_LOG_EXT;
1523 tf.protocol = ATA_PROT_PIO;
1524 dma = false;
1520 }
1521 tf.lbal = log;
1522 tf.lbam = page;
1523 tf.nsect = sectors;
1524 tf.hob_nsect = sectors >> 8;
1525 tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_LBA48 | ATA_TFLAG_DEVICE;
1526
1527 err_mask = ata_exec_internal(dev, &tf, NULL, DMA_FROM_DEVICE,
1528 buf, sectors * ATA_SECT_SIZE, 0);
1529
1525 }
1526 tf.lbal = log;
1527 tf.lbam = page;
1528 tf.nsect = sectors;
1529 tf.hob_nsect = sectors >> 8;
1530 tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_LBA48 | ATA_TFLAG_DEVICE;
1531
1532 err_mask = ata_exec_internal(dev, &tf, NULL, DMA_FROM_DEVICE,
1533 buf, sectors * ATA_SECT_SIZE, 0);
1534
1535 if (err_mask && dma) {
1536 dev->horkage |= ATA_HORKAGE_NO_NCQ_LOG;
1537 ata_dev_warn(dev, "READ LOG DMA EXT failed, trying unqueued\n");
1538 goto retry;
1539 }
1540
1530 DPRINTK("EXIT, err_mask=%x\n", err_mask);
1531 return err_mask;
1532}
1533
1534/**
1535 * ata_eh_read_log_10h - Read log page 10h for NCQ error details
1536 * @dev: Device to read log page 10h from
1537 * @tag: Resulting tag of the failed command

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3592 "failed to enable DIPM, Emask 0x%x\n",
3593 err_mask);
3594 rc = -EIO;
3595 goto fail;
3596 }
3597 }
3598 }
3599
1541 DPRINTK("EXIT, err_mask=%x\n", err_mask);
1542 return err_mask;
1543}
1544
1545/**
1546 * ata_eh_read_log_10h - Read log page 10h for NCQ error details
1547 * @dev: Device to read log page 10h from
1548 * @tag: Resulting tag of the failed command

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3603 "failed to enable DIPM, Emask 0x%x\n",
3604 err_mask);
3605 rc = -EIO;
3606 goto fail;
3607 }
3608 }
3609 }
3610
3600 link->last_lpm_change = jiffies;
3601 link->flags |= ATA_LFLAG_CHANGED;
3602
3603 return 0;
3604
3605fail:
3606 /* restore the old policy */
3607 link->lpm_policy = old_policy;
3608 if (ap && ap->slave_link)
3609 ap->slave_link->lpm_policy = old_policy;
3610

--- 641 unchanged lines hidden --- 		3611 return 0;
3612
3613fail:
3614 /* restore the old policy */
3615 link->lpm_policy = old_policy;
3616 if (ap && ap->slave_link)
3617 ap->slave_link->lpm_policy = old_policy;
3618

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