/*
* libata-eh.c - libata error handling
*
- * Maintained by: Tejun Heo <tj@kernel.org>
- * Please ALWAYS copy linux-ide@vger.kernel.org
- * on emails.
- *
* Copyright 2006 Tejun Heo <htejun@gmail.com>
*
* libata documentation is available via 'make {ps|pdf}docs',
__ata_ehi_pushv_desc(ehi, fmt, args);
va_end(args);
}
+EXPORT_SYMBOL_GPL(__ata_ehi_push_desc);
/**
* ata_ehi_push_desc - push error description with separator
__ata_ehi_pushv_desc(ehi, fmt, args);
va_end(args);
}
+EXPORT_SYMBOL_GPL(ata_ehi_push_desc);
/**
* ata_ehi_clear_desc - clean error description
ehi->desc[0] = '\0';
ehi->desc_len = 0;
}
+EXPORT_SYMBOL_GPL(ata_ehi_clear_desc);
/**
* ata_port_desc - append port description
__ata_ehi_pushv_desc(&ap->link.eh_info, fmt, args);
va_end(args);
}
+EXPORT_SYMBOL_GPL(ata_port_desc);
#ifdef CONFIG_PCI
-
/**
* ata_port_pbar_desc - append PCI BAR description
* @ap: target ATA port
ata_port_desc(ap, "%s 0x%llx", name,
start + (unsigned long long)offset);
}
-
+EXPORT_SYMBOL_GPL(ata_port_pbar_desc);
#endif /* CONFIG_PCI */
static int ata_lookup_timeout_table(u8 cmd)
/* see: ata_std_sched_eh, unless you know better */
ap->ops->sched_eh(ap);
}
+EXPORT_SYMBOL_GPL(ata_port_schedule_eh);
static int ata_do_link_abort(struct ata_port *ap, struct ata_link *link)
{
{
return ata_do_link_abort(link->ap, link);
}
+EXPORT_SYMBOL_GPL(ata_link_abort);
/**
* ata_port_abort - abort all qc's on the port
{
return ata_do_link_abort(ap, NULL);
}
+EXPORT_SYMBOL_GPL(ata_port_abort);
/**
* __ata_port_freeze - freeze port
return nr_aborted;
}
-
-/**
- * sata_async_notification - SATA async notification handler
- * @ap: ATA port where async notification is received
- *
- * Handler to be called when async notification via SDB FIS is
- * received. This function schedules EH if necessary.
- *
- * LOCKING:
- * spin_lock_irqsave(host lock)
- *
- * RETURNS:
- * 1 if EH is scheduled, 0 otherwise.
- */
-int sata_async_notification(struct ata_port *ap)
-{
- u32 sntf;
- int rc;
-
- if (!(ap->flags & ATA_FLAG_AN))
- return 0;
-
- rc = sata_scr_read(&ap->link, SCR_NOTIFICATION, &sntf);
- if (rc == 0)
- sata_scr_write(&ap->link, SCR_NOTIFICATION, sntf);
-
- if (!sata_pmp_attached(ap) || rc) {
- /* PMP is not attached or SNTF is not available */
- if (!sata_pmp_attached(ap)) {
- /* PMP is not attached. Check whether ATAPI
- * AN is configured. If so, notify media
- * change.
- */
- struct ata_device *dev = ap->link.device;
-
- if ((dev->class == ATA_DEV_ATAPI) &&
- (dev->flags & ATA_DFLAG_AN))
- ata_scsi_media_change_notify(dev);
- return 0;
- } else {
- /* PMP is attached but SNTF is not available.
- * ATAPI async media change notification is
- * not used. The PMP must be reporting PHY
- * status change, schedule EH.
- */
- ata_port_schedule_eh(ap);
- return 1;
- }
- } else {
- /* PMP is attached and SNTF is available */
- struct ata_link *link;
-
- /* check and notify ATAPI AN */
- ata_for_each_link(link, ap, EDGE) {
- if (!(sntf & (1 << link->pmp)))
- continue;
-
- if ((link->device->class == ATA_DEV_ATAPI) &&
- (link->device->flags & ATA_DFLAG_AN))
- ata_scsi_media_change_notify(link->device);
- }
-
- /* If PMP is reporting that PHY status of some
- * downstream ports has changed, schedule EH.
- */
- if (sntf & (1 << SATA_PMP_CTRL_PORT)) {
- ata_port_schedule_eh(ap);
- return 1;
- }
-
- return 0;
- }
-}
+EXPORT_SYMBOL_GPL(ata_port_freeze);
/**
* ata_eh_freeze_port - EH helper to freeze port
__ata_port_freeze(ap);
spin_unlock_irqrestore(ap->lock, flags);
}
+EXPORT_SYMBOL_GPL(ata_eh_freeze_port);
/**
* ata_port_thaw_port - EH helper to thaw port
*/
ata_ering_clear(&dev->ering);
}
+EXPORT_SYMBOL_GPL(ata_dev_disable);
/**
* ata_eh_detach_dev - detach ATA device
return "unknown error";
}
-/**
- * ata_eh_read_log_10h - Read log page 10h for NCQ error details
- * @dev: Device to read log page 10h from
- * @tag: Resulting tag of the failed command
- * @tf: Resulting taskfile registers of the failed command
- *
- * Read log page 10h to obtain NCQ error details and clear error
- * condition.
- *
- * LOCKING:
- * Kernel thread context (may sleep).
- *
- * RETURNS:
- * 0 on success, -errno otherwise.
- */
-static int ata_eh_read_log_10h(struct ata_device *dev,
- int *tag, struct ata_taskfile *tf)
-{
- u8 *buf = dev->link->ap->sector_buf;
- unsigned int err_mask;
- u8 csum;
- int i;
-
- err_mask = ata_read_log_page(dev, ATA_LOG_SATA_NCQ, 0, buf, 1);
- if (err_mask)
- return -EIO;
-
- csum = 0;
- for (i = 0; i < ATA_SECT_SIZE; i++)
- csum += buf[i];
- if (csum)
- ata_dev_warn(dev, "invalid checksum 0x%x on log page 10h\n",
- csum);
-
- if (buf[0] & 0x80)
- return -ENOENT;
-
- *tag = buf[0] & 0x1f;
-
- tf->command = buf[2];
- tf->feature = buf[3];
- tf->lbal = buf[4];
- tf->lbam = buf[5];
- tf->lbah = buf[6];
- tf->device = buf[7];
- tf->hob_lbal = buf[8];
- tf->hob_lbam = buf[9];
- tf->hob_lbah = buf[10];
- tf->nsect = buf[12];
- tf->hob_nsect = buf[13];
- if (dev->class == ATA_DEV_ZAC && ata_id_has_ncq_autosense(dev->id))
- tf->auxiliary = buf[14] << 16 | buf[15] << 8 | buf[16];
-
- return 0;
-}
-
/**
* atapi_eh_tur - perform ATAPI TEST_UNIT_READY
* @dev: target ATAPI device
ehc->i.action |= action;
}
-/**
- * ata_eh_analyze_ncq_error - analyze NCQ error
- * @link: ATA link to analyze NCQ error for
- *
- * Read log page 10h, determine the offending qc and acquire
- * error status TF. For NCQ device errors, all LLDDs have to do
- * is setting AC_ERR_DEV in ehi->err_mask. This function takes
- * care of the rest.
- *
- * LOCKING:
- * Kernel thread context (may sleep).
- */
-void ata_eh_analyze_ncq_error(struct ata_link *link)
-{
- struct ata_port *ap = link->ap;
- struct ata_eh_context *ehc = &link->eh_context;
- struct ata_device *dev = link->device;
- struct ata_queued_cmd *qc;
- struct ata_taskfile tf;
- int tag, rc;
-
- /* if frozen, we can't do much */
- if (ap->pflags & ATA_PFLAG_FROZEN)
- return;
-
- /* is it NCQ device error? */
- if (!link->sactive || !(ehc->i.err_mask & AC_ERR_DEV))
- return;
-
- /* has LLDD analyzed already? */
- ata_qc_for_each_raw(ap, qc, tag) {
- if (!(qc->flags & ATA_QCFLAG_FAILED))
- continue;
-
- if (qc->err_mask)
- return;
- }
-
- /* okay, this error is ours */
- memset(&tf, 0, sizeof(tf));
- rc = ata_eh_read_log_10h(dev, &tag, &tf);
- if (rc) {
- ata_link_err(link, "failed to read log page 10h (errno=%d)\n",
- rc);
- return;
- }
-
- if (!(link->sactive & (1 << tag))) {
- ata_link_err(link, "log page 10h reported inactive tag %d\n",
- tag);
- return;
- }
-
- /* we've got the perpetrator, condemn it */
- qc = __ata_qc_from_tag(ap, tag);
- memcpy(&qc->result_tf, &tf, sizeof(tf));
- qc->result_tf.flags = ATA_TFLAG_ISADDR | ATA_TFLAG_LBA | ATA_TFLAG_LBA48;
- qc->err_mask |= AC_ERR_DEV | AC_ERR_NCQ;
- if (dev->class == ATA_DEV_ZAC &&
- ((qc->result_tf.command & ATA_SENSE) || qc->result_tf.auxiliary)) {
- char sense_key, asc, ascq;
-
- sense_key = (qc->result_tf.auxiliary >> 16) & 0xff;
- asc = (qc->result_tf.auxiliary >> 8) & 0xff;
- ascq = qc->result_tf.auxiliary & 0xff;
- ata_scsi_set_sense(dev, qc->scsicmd, sense_key, asc, ascq);
- ata_scsi_set_sense_information(dev, qc->scsicmd,
- &qc->result_tf);
- qc->flags |= ATA_QCFLAG_SENSE_VALID;
- }
-
- ehc->i.err_mask &= ~AC_ERR_DEV;
-}
-
/**
* ata_eh_analyze_tf - analyze taskfile of a failed qc
* @qc: qc to analyze
int rc;
/* if the link or host doesn't do LPM, noop */
- if ((link->flags & ATA_LFLAG_NO_LPM) || (ap && !ap->ops->set_lpm))
+ if (!IS_ENABLED(CONFIG_SATA_HOST) ||
+ (link->flags & ATA_LFLAG_NO_LPM) || (ap && !ap->ops->set_lpm))
return 0;
/*
ata_do_eh(ap, ops->prereset, ops->softreset, hardreset, ops->postreset);
}
+EXPORT_SYMBOL_GPL(ata_std_error_handler);
#ifdef CONFIG_PM
/**
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