net/mlx4_core: Fix init_hca fields offset

Slave function read the following capabilities from the wrong offset:
1. log_mc_entry_sz
2. fs_log_entry_sz
3. log_mc_hash_sz

Fix that by adjusting these capabilities offset to match firmware
layout.

Due to the wrong offset read, the following issues might occur:
1+2. Negative value reported at max_mcast_qp_attach.
3. Driver to init FW with multicast hash size of zero.

Fixes: a40ded604365 ("net/mlx4_core: Add masking for a few queries on HCA caps")
Signed-off-by: Aya Levin <ayal@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Eran Ben Elisha <eranbe@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://lore.kernel.org/r/20201118081922.553-1-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.c b/drivers/net/ethernet/mellanox/mlx4/fw.c
index f6ff962..f6cfec8 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx4/fw.c
+++ b/drivers/net/ethernet/mellanox/mlx4/fw.c
@@ -1864,8 +1864,8 @@ int mlx4_INIT_HCA(struct mlx4_dev *dev, struct mlx4_init_hca_param *param)
 #define         INIT_HCA_LOG_RD_OFFSET          (INIT_HCA_QPC_OFFSET + 0x77)
 #define INIT_HCA_MCAST_OFFSET           0x0c0
 #define         INIT_HCA_MC_BASE_OFFSET         (INIT_HCA_MCAST_OFFSET + 0x00)
-#define         INIT_HCA_LOG_MC_ENTRY_SZ_OFFSET (INIT_HCA_MCAST_OFFSET + 0x12)
-#define         INIT_HCA_LOG_MC_HASH_SZ_OFFSET  (INIT_HCA_MCAST_OFFSET + 0x16)
+#define         INIT_HCA_LOG_MC_ENTRY_SZ_OFFSET (INIT_HCA_MCAST_OFFSET + 0x13)
+#define         INIT_HCA_LOG_MC_HASH_SZ_OFFSET  (INIT_HCA_MCAST_OFFSET + 0x17)
 #define  INIT_HCA_UC_STEERING_OFFSET    (INIT_HCA_MCAST_OFFSET + 0x18)
 #define         INIT_HCA_LOG_MC_TABLE_SZ_OFFSET (INIT_HCA_MCAST_OFFSET + 0x1b)
 #define  INIT_HCA_DEVICE_MANAGED_FLOW_STEERING_EN      0x6
@@ -1873,7 +1873,7 @@ int mlx4_INIT_HCA(struct mlx4_dev *dev, struct mlx4_init_hca_param *param)
 #define  INIT_HCA_DRIVER_VERSION_SZ       0x40
 #define  INIT_HCA_FS_PARAM_OFFSET         0x1d0
 #define  INIT_HCA_FS_BASE_OFFSET          (INIT_HCA_FS_PARAM_OFFSET + 0x00)
-#define  INIT_HCA_FS_LOG_ENTRY_SZ_OFFSET  (INIT_HCA_FS_PARAM_OFFSET + 0x12)
+#define  INIT_HCA_FS_LOG_ENTRY_SZ_OFFSET  (INIT_HCA_FS_PARAM_OFFSET + 0x13)
 #define  INIT_HCA_FS_A0_OFFSET           (INIT_HCA_FS_PARAM_OFFSET + 0x18)
 #define  INIT_HCA_FS_LOG_TABLE_SZ_OFFSET  (INIT_HCA_FS_PARAM_OFFSET + 0x1b)
 #define  INIT_HCA_FS_ETH_BITS_OFFSET      (INIT_HCA_FS_PARAM_OFFSET + 0x21)

diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.h b/drivers/net/ethernet/mellanox/mlx4/fw.h
index 650ae08..8f020f2 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx4/fw.h
+++ b/drivers/net/ethernet/mellanox/mlx4/fw.h
@@ -182,8 +182,8 @@ struct mlx4_init_hca_param {
        u64 cmpt_base;
        u64 mtt_base;
        u64 global_caps;
-       u16 log_mc_entry_sz;
-       u16 log_mc_hash_sz;
+       u8 log_mc_entry_sz;
+       u8 log_mc_hash_sz;
        u16 hca_core_clock; /* Internal Clock Frequency (in MHz) */
        u8  log_num_qps;
        u8  log_num_srqs;