mlx4_core: Add extended port capabilities support

An Extended Port Info packet is sent to each hw port during HCA init.
If it returns without error, we assume the port supports extended port
capabilities.

Signed-off-by: Marcel Apfelbaum <marcela@dev.mellanox.co.il>
Reviewed-by: Jack Morgenstein <jackm@dev.mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h
index 53ef894bfa05..ce9ef491addf 100644
--- a/include/linux/mlx4/device.h
+++ b/include/linux/mlx4/device.h
@@ -82,6 +82,12 @@ enum {
         MLX4_DEV_CAP_FLAG_COUNTERS      = 1LL << 48
 };
 
+#define MLX4_ATTR_EXTENDED_PORT_INFO    cpu_to_be16(0xff90)
+
+enum {
+        MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO        = 1 <<  0
+};
+
 enum {
         MLX4_BMME_FLAG_LOCAL_INV        = 1 <<  6,
         MLX4_BMME_FLAG_REMOTE_INV       = 1 <<  7,
@@ -276,6 +282,7 @@ struct mlx4_caps {
         u32                     port_mask;
         enum mlx4_port_type     possible_type[MLX4_MAX_PORTS + 1];
         u32                     max_counters;
+        u8                      ext_port_cap[MLX4_MAX_PORTS + 1];
 };
 
 struct mlx4_buf_list {