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[net-next,2/9] net/mlx4_core: Device revision support

Message ID 1484587805-12666-3-git-send-email-tariqt@mellanox.com
State Changes Requested, archived
Delegated to: David Miller
Headers show

Commit Message

Tariq Toukan Jan. 16, 2017, 5:29 p.m. UTC 
From: Yishai Hadas <yishaih@mellanox.com>

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>
---
 drivers/net/ethernet/mellanox/mlx4/fw.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.c b/drivers/net/ethernet/mellanox/mlx4/fw.c
index 25b5b32e958f..de39a5db4a6f 100644
--- 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);