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authorEli Cohen <eli@mellanox.co.il>2009-09-24 11:03:03 -0700
committerRoland Dreier <rolandd@cisco.com>2009-09-24 11:03:03 -0700
commitc57e20dcff981c39e43c857f3997095bacb2223f (patch)
tree4b9f50a76fd06002290f89444a4ad6740b397191
parent86d710146fb9975f04c505ec78caa43d227c1018 (diff)
mlx4_core: Pass cache line size to device FW
ConnectX can work more efficiently if the CPU cache line size is passed to it with the INIT_HCA firmware command. Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
-rw-r--r--drivers/net/mlx4/fw.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/mlx4/fw.c b/drivers/net/mlx4/fw.c
index cee199ceba2..3c16602172f 100644
--- a/drivers/net/mlx4/fw.c
+++ b/drivers/net/mlx4/fw.c
@@ -33,6 +33,7 @@
*/
#include <linux/mlx4/cmd.h>
+#include <linux/cache.h>
#include "fw.h"
#include "icm.h"
@@ -698,6 +699,7 @@ int mlx4_INIT_HCA(struct mlx4_dev *dev, struct mlx4_init_hca_param *param)
#define INIT_HCA_IN_SIZE 0x200
#define INIT_HCA_VERSION_OFFSET 0x000
#define INIT_HCA_VERSION 2
+#define INIT_HCA_CACHELINE_SZ_OFFSET 0x0e
#define INIT_HCA_FLAGS_OFFSET 0x014
#define INIT_HCA_QPC_OFFSET 0x020
#define INIT_HCA_QPC_BASE_OFFSET (INIT_HCA_QPC_OFFSET + 0x10)
@@ -735,6 +737,9 @@ 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;
+
#if defined(__LITTLE_ENDIAN)
*(inbox + INIT_HCA_FLAGS_OFFSET / 4) &= ~cpu_to_be32(1 << 1);
#elif defined(__BIG_ENDIAN)