diff options
| author | Eli Cohen <eli@mellanox.co.il> | 2009-09-24 11:03:03 -0700 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2009-09-24 11:03:03 -0700 |
| commit | c57e20dcff981c39e43c857f3997095bacb2223f (patch) | |
| tree | 4b9f50a76fd06002290f89444a4ad6740b397191 /drivers/net/mlx4 | |
| parent | 86d710146fb9975f04c505ec78caa43d227c1018 (diff) | |
| download | linux-c57e20dcff981c39e43c857f3997095bacb2223f.tar.bz2 | |
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>
Diffstat (limited to 'drivers/net/mlx4')
| -rw-r--r-- | drivers/net/mlx4/fw.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/mlx4/fw.c b/drivers/net/mlx4/fw.c index cee199ceba2f..3c16602172fc 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) |