1 files changed, 24 insertions, 0 deletions

diff --git a/include/linux/libata.h b/include/linux/libata.h
index 8b8946dd63b9..32f247cb5e9e 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -210,6 +210,7 @@ enum {
         ATA_FLAG_SLAVE_POSS     = (1 << 0), /* host supports slave dev */
                                             /* (doesn't imply presence) */
         ATA_FLAG_SATA           = (1 << 1),
+        ATA_FLAG_NO_LPM         = (1 << 2), /* host not happy with LPM */
         ATA_FLAG_NO_LOG_PAGE    = (1 << 5), /* do not issue log page read */
         ATA_FLAG_NO_ATAPI       = (1 << 6), /* No ATAPI support */
         ATA_FLAG_PIO_DMA        = (1 << 7), /* PIO cmds via DMA */
@@ -1495,6 +1496,29 @@ static inline bool ata_tag_valid(unsigned int tag)
         return tag < ATA_MAX_QUEUE || ata_tag_internal(tag);
 }
 
+#define __ata_qc_for_each(ap, qc, tag, max_tag, fn)             \
+        for ((tag) = 0; (tag) < (max_tag) &&                    \
+             ({ qc = fn((ap), (tag)); 1; }); (tag)++)           \
+
+/*
+ * Internal use only, iterate commands ignoring error handling and
+ * status of 'qc'.
+ */
+#define ata_qc_for_each_raw(ap, qc, tag)                                        \
+        __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE, __ata_qc_from_tag)
+
+/*
+ * Iterate all potential commands that can be queued
+ */
+#define ata_qc_for_each(ap, qc, tag)                                    \
+        __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE, ata_qc_from_tag)
+
+/*
+ * Like ata_qc_for_each, but with the internal tag included
+ */
+#define ata_qc_for_each_with_internal(ap, qc, tag)                      \
+        __ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE + 1, ata_qc_from_tag)
+
 /*
  * device helpers
  */