+extern void ata_eh_freeze_port(struct ata_port *ap);
+extern void ata_eh_thaw_port(struct ata_port *ap);
+
+extern void ata_eh_qc_complete(struct ata_queued_cmd *qc);
+extern void ata_eh_qc_retry(struct ata_queued_cmd *qc);
+
+extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
+ ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
+ ata_postreset_fn_t postreset);
+
+/*
+ * printk helpers
+ */
+#define ata_port_printk(ap, lv, fmt, args...) \
+ printk(lv"ata%u: "fmt, (ap)->id , ##args)
+
+#define ata_dev_printk(dev, lv, fmt, args...) \
+ printk(lv"ata%u.%02u: "fmt, (dev)->ap->id, (dev)->devno , ##args)
+
+/*
+ * ata_eh_info helpers
+ */
+#define ata_ehi_push_desc(ehi, fmt, args...) do { \
+ (ehi)->desc_len += scnprintf((ehi)->desc + (ehi)->desc_len, \
+ ATA_EH_DESC_LEN - (ehi)->desc_len, \
+ fmt , ##args); \
+} while (0)
+
+#define ata_ehi_clear_desc(ehi) do { \
+ (ehi)->desc[0] = '\0'; \
+ (ehi)->desc_len = 0; \
+} while (0)
+
+static inline void __ata_ehi_hotplugged(struct ata_eh_info *ehi)
+{
+ if (ehi->flags & ATA_EHI_HOTPLUGGED)
+ return;
+
+ ehi->flags |= ATA_EHI_HOTPLUGGED | ATA_EHI_RESUME_LINK;
+ ehi->hotplug_timestamp = jiffies;
+
+ ehi->action |= ATA_EH_SOFTRESET;
+ ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1;
+}
+
+static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi)
+{
+ __ata_ehi_hotplugged(ehi);
+ ehi->err_mask |= AC_ERR_ATA_BUS;
+}
+
+/*
+ * qc helpers
+ */