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net/mlx4_core: Add basic elements for QCN 

Add device capability, firmware command opcode and etc prior elements
needed for QCN suppprt. Disable SRIOV VF view/access for QCN is disabled.

While here, remove a redundant offset definition into the
QUERY_DEV_CAP mailbox.

Signed-off-by: Shani Michaeli <shanim@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Shani Michaeli 2015-03-05 20:16:12 +02:00 committed by David S. Miller
parent c93682477b
commit d237baa1cb
4 changed files with 35 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
drivers/net/ethernet/mellanox/mlx4/cmd.c
View File

@ -1499,6 +1499,15 @@ static struct mlx4_cmd_info cmd_info[] = {
.verify = NULL,
.wrapper = mlx4_ACCESS_REG_wrapper,
},
{
.opcode = MLX4_CMD_CONGESTION_CTRL_OPCODE,
.has_inbox = false,
.has_outbox = false,
.out_is_imm = false,
.encode_slave_id = false,
.verify = NULL,
.wrapper = mlx4_CMD_EPERM_wrapper,
},
/* Native multicast commands are not available for guests */
{
.opcode = MLX4_CMD_QP_ATTACH,

13
drivers/net/ethernet/mellanox/mlx4/fw.c
View File

@ -143,7 +143,8 @@ static void dump_dev_cap_flags2(struct mlx4_dev *dev, u64 flags)
[18] = "More than 80 VFs support",
[19] = "Performance optimized for limited rule configuration flow steering support",
[20] = "Recoverable error events support",
[21] = "Port Remap support"
[21] = "Port Remap support",
[22] = "QCN support"
};
int i;
@ -675,7 +676,7 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
#define QUERY_DEV_CAP_FLOW_STEERING_RANGE_EN_OFFSET 0x76
#define QUERY_DEV_CAP_FLOW_STEERING_MAX_QP_OFFSET 0x77
#define QUERY_DEV_CAP_CQ_EQ_CACHE_LINE_STRIDE 0x7a
#define QUERY_DEV_CAP_ETH_PROT_CTRL_OFFSET 0x7a
#define QUERY_DEV_CAP_ECN_QCN_VER_OFFSET 0x7b
#define QUERY_DEV_CAP_RDMARC_ENTRY_SZ_OFFSET 0x80
#define QUERY_DEV_CAP_QPC_ENTRY_SZ_OFFSET 0x82
#define QUERY_DEV_CAP_AUX_ENTRY_SZ_OFFSET 0x84
@ -777,6 +778,9 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_DMFS_IPOIB;
MLX4_GET(field, outbox, QUERY_DEV_CAP_FLOW_STEERING_MAX_QP_OFFSET);
dev_cap->fs_max_num_qp_per_entry = field;
MLX4_GET(field, outbox, QUERY_DEV_CAP_ECN_QCN_VER_OFFSET);
if (field & 0x1)
dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_QCN;
MLX4_GET(stat_rate, outbox, QUERY_DEV_CAP_RATE_SUPPORT_OFFSET);
dev_cap->stat_rate_support = stat_rate;
MLX4_GET(field, outbox, QUERY_DEV_CAP_CQ_TS_SUPPORT_OFFSET);
@ -1149,6 +1153,11 @@ int mlx4_QUERY_DEV_CAP_wrapper(struct mlx4_dev *dev, int slave,
DEV_CAP_EXT_2_FLAG_FSM);
MLX4_PUT(outbox->buf, field32, QUERY_DEV_CAP_EXT_2_FLAGS_OFFSET);
/* turn off QCN for guests */
MLX4_GET(field, outbox->buf, QUERY_DEV_CAP_ECN_QCN_VER_OFFSET);
field &= 0xfe;
MLX4_PUT(outbox->buf, field, QUERY_DEV_CAP_ECN_QCN_VER_OFFSET);
return 0;
}

13
include/linux/mlx4/cmd.h
View File

@ -163,6 +163,9 @@ enum {
MLX4_QP_FLOW_STEERING_ATTACH = 0x65,
MLX4_QP_FLOW_STEERING_DETACH = 0x66,
MLX4_FLOW_STEERING_IB_UC_QP_RANGE = 0x64,
/* Update and read QCN parameters */
MLX4_CMD_CONGESTION_CTRL_OPCODE = 0x68,
};
enum {
@ -233,6 +236,16 @@ struct mlx4_config_dev_params {
u8 rx_csum_flags_port_2;
};
enum mlx4_en_congestion_control_algorithm {
MLX4_CTRL_ALGO_802_1_QAU_REACTION_POINT = 0,
};
enum mlx4_en_congestion_control_opmod {
MLX4_CONGESTION_CONTROL_GET_PARAMS,
MLX4_CONGESTION_CONTROL_GET_STATISTICS,
MLX4_CONGESTION_CONTROL_SET_PARAMS = 4,
};
struct mlx4_dev;
struct mlx4_cmd_mailbox {

3
include/linux/mlx4/device.h
View File

@ -203,7 +203,8 @@ enum {
MLX4_DEV_CAP_FLAG2_80_VFS = 1LL << 18,
MLX4_DEV_CAP_FLAG2_FS_A0 = 1LL << 19,
MLX4_DEV_CAP_FLAG2_RECOVERABLE_ERROR_EVENT = 1LL << 20,
MLX4_DEV_CAP_FLAG2_PORT_REMAP = 1LL << 21
MLX4_DEV_CAP_FLAG2_PORT_REMAP = 1LL << 21,
MLX4_DEV_CAP_FLAG2_QCN = 1LL << 22,
};
enum {