IB/mlx4: Handle FW command interface rev 3

Upcoming firmware introduces command interface revision 3, which
changes the way port capabilities are queried and set.  Update the
driver to handle both the new and old command interfaces by adding a
new MLX4_FLAG_OLD_PORT_CMDS that it is set after querying the firmware
interface revision and then using the correct interface based on the
setting of the flag.

Signed-off-by: Roland Dreier <rolandd@cisco.com>

2 files changed, 8 insertions, 6 deletions

diff --git a/include/linux/mlx4/cmd.h b/include/linux/mlx4/cmd.h
index 4fb552d12f7a..7d1eaa97de13 100644
--- a/include/linux/mlx4/cmd.h
+++ b/include/linux/mlx4/cmd.h
@@ -54,6 +54,7 @@ enum {
         MLX4_CMD_INIT_PORT       = 0x9,
         MLX4_CMD_CLOSE_PORT      = 0xa,
         MLX4_CMD_QUERY_HCA       = 0xb,
+        MLX4_CMD_QUERY_PORT      = 0x43,
         MLX4_CMD_SET_PORT        = 0xc,
         MLX4_CMD_ACCESS_DDR      = 0x2e,
         MLX4_CMD_MAP_ICM         = 0xffa,
diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h
index 8c5f8fd86841..b372f5910fc1 100644
--- a/include/linux/mlx4/device.h
+++ b/include/linux/mlx4/device.h
@@ -41,6 +41,7 @@
 
 enum {
         MLX4_FLAG_MSI_X         = 1 << 0,
+        MLX4_FLAG_OLD_PORT_CMDS = 1 << 1,
 };
 
 enum {
@@ -131,10 +132,10 @@ enum {
 struct mlx4_caps {
         u64                     fw_ver;
         int                     num_ports;
-        int                     vl_cap;
-        int                     mtu_cap;
-        int                     gid_table_len;
-        int                     pkey_table_len;
+        int                     vl_cap[MLX4_MAX_PORTS + 1];
+        int                     mtu_cap[MLX4_MAX_PORTS + 1];
+        int                     gid_table_len[MLX4_MAX_PORTS + 1];
+        int                     pkey_table_len[MLX4_MAX_PORTS + 1];
         int                     local_ca_ack_delay;
         int                     num_uars;
         int                     bf_reg_size;
@@ -174,7 +175,7 @@ struct mlx4_caps {
         u32                     page_size_cap;
         u32                     flags;
         u16                     stat_rate_support;
-        u8                      port_width_cap;
+        u8                      port_width_cap[MLX4_MAX_PORTS + 1];
 };
 
 struct mlx4_buf_list {
@@ -322,7 +323,7 @@ int mlx4_srq_alloc(struct mlx4_dev *dev, u32 pdn, struct mlx4_mtt *mtt,
 void mlx4_srq_free(struct mlx4_dev *dev, struct mlx4_srq *srq);
 int mlx4_srq_arm(struct mlx4_dev *dev, struct mlx4_srq *srq, int limit_watermark);
 
-int mlx4_INIT_PORT(struct mlx4_dev *dev, struct mlx4_init_port_param *param, int port);
+int mlx4_INIT_PORT(struct mlx4_dev *dev, int port);
 int mlx4_CLOSE_PORT(struct mlx4_dev *dev, int port);
 
 int mlx4_multicast_attach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16]);