IB/ipath: ipath_poll fixups and enhancements

Fix ipath_poll and enhance it so we can poll for urgent packets or
regular packets and receive notifications of when a header queue
overflows.

Signed-off-by: Robert Walsh <robert.walsh@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 10 insertions, 1 deletions

diff --git a/drivers/infiniband/hw/ipath/ipath_common.h b/drivers/infiniband/hw/ipath/ipath_common.h
index f70788c25ea6..b4b786d0dfca 100644
--- a/drivers/infiniband/hw/ipath/ipath_common.h
+++ b/drivers/infiniband/hw/ipath/ipath_common.h
@@ -431,8 +431,15 @@ struct ipath_user_info {
 #define IPATH_CMD_UNUSED_1      25
 #define IPATH_CMD_UNUSED_2      26
 #define IPATH_CMD_PIOAVAILUPD   27      /* force an update of PIOAvail reg */
+#define IPATH_CMD_POLL_TYPE     28      /* set the kind of polling we want */
 
-#define IPATH_CMD_MAX           27
+#define IPATH_CMD_MAX           28
+
+/*
+ * Poll types
+ */
+#define IPATH_POLL_TYPE_URGENT   0x01
+#define IPATH_POLL_TYPE_OVERFLOW 0x02
 
 struct ipath_port_info {
         __u32 num_active;       /* number of active units */
@@ -473,6 +480,8 @@ struct ipath_cmd {
                 __u16 part_key;
                 /* user address of __u32 bitmask of active slaves */
                 __u64 slave_mask_addr;
+                /* type of polling we want */
+                __u16 poll_type;
         } cmd;
 };