net/mlx4_core: Device revision support

The device revision field returned by the NodeInfo MAD is incorrect
on ConnectX3 devices.

This patch is driver side handling to complete a FW fix added at 2.11.1172.
INIT_HCA - bit at offset 0x0C.12 is set to 1 so that FW will report
correct device revision.

Older FW versions won't be affected from turning on that bit,
no capability bit is needed.

Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.c b/drivers/net/ethernet/mellanox/mlx4/fw.c
index 25b5b32..de39a5d 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx4/fw.c
+++ b/drivers/net/ethernet/mellanox/mlx4/fw.c
@@ -1875,7 +1875,7 @@ int mlx4_INIT_HCA(struct mlx4_dev *dev, struct mlx4_init_hca_param *param)
        *((u8 *) mailbox->buf + INIT_HCA_VERSION_OFFSET) = INIT_HCA_VERSION;
 
        *((u8 *) mailbox->buf + INIT_HCA_CACHELINE_SZ_OFFSET) =
-               (ilog2(cache_line_size()) - 4) << 5;
+               ((ilog2(cache_line_size()) - 4) << 5) | (1 << 4);
 
 #if defined(__LITTLE_ENDIAN)
        *(inbox + INIT_HCA_FLAGS_OFFSET / 4) &= ~cpu_to_be32(1 << 1);