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mlx4_core: Get ethernet MTU and default address from firmware
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Get maximum ethernet MTU and default MAC address from the firmware
QUERY_DEV_CAP command.

Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
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Yevgeny Petrilin authored and Roland Dreier committed Oct 22, 2008
1 parent 93fc9e1 commit b79acb4
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Showing 4 changed files with 17 additions and 8 deletions.
13 changes: 8 additions & 5 deletions drivers/net/mlx4/fw.c
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Original file line number Diff line number Diff line change
Expand Up @@ -346,7 +346,7 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
MLX4_GET(field, outbox, QUERY_DEV_CAP_VL_PORT_OFFSET);
dev_cap->max_vl[i] = field >> 4;
MLX4_GET(field, outbox, QUERY_DEV_CAP_MTU_WIDTH_OFFSET);
dev_cap->max_mtu[i] = field >> 4;
dev_cap->ib_mtu[i] = field >> 4;
dev_cap->max_port_width[i] = field & 0xf;
MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_GID_OFFSET);
dev_cap->max_gids[i] = 1 << (field & 0xf);
Expand All @@ -355,8 +355,10 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
}
} else {
#define QUERY_PORT_MTU_OFFSET 0x01
#define QUERY_PORT_ETH_MTU_OFFSET 0x02
#define QUERY_PORT_WIDTH_OFFSET 0x06
#define QUERY_PORT_MAX_GID_PKEY_OFFSET 0x07
#define QUERY_PORT_MAC_OFFSET 0x08
#define QUERY_PORT_MAX_MACVLAN_OFFSET 0x0a
#define QUERY_PORT_MAX_VL_OFFSET 0x0b

Expand All @@ -367,7 +369,7 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
goto out;

MLX4_GET(field, outbox, QUERY_PORT_MTU_OFFSET);
dev_cap->max_mtu[i] = field & 0xf;
dev_cap->ib_mtu[i] = field & 0xf;
MLX4_GET(field, outbox, QUERY_PORT_WIDTH_OFFSET);
dev_cap->max_port_width[i] = field & 0xf;
MLX4_GET(field, outbox, QUERY_PORT_MAX_GID_PKEY_OFFSET);
Expand All @@ -378,7 +380,8 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
MLX4_GET(field, outbox, QUERY_PORT_MAX_MACVLAN_OFFSET);
dev_cap->log_max_macs[i] = field & 0xf;
dev_cap->log_max_vlans[i] = field >> 4;

MLX4_GET(dev_cap->eth_mtu[i], outbox, QUERY_PORT_ETH_MTU_OFFSET);
MLX4_GET(dev_cap->def_mac[i], outbox, QUERY_PORT_MAC_OFFSET);
}
}

Expand Down Expand Up @@ -412,7 +415,7 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
mlx4_dbg(dev, "Max CQEs: %d, max WQEs: %d, max SRQ WQEs: %d\n",
dev_cap->max_cq_sz, dev_cap->max_qp_sz, dev_cap->max_srq_sz);
mlx4_dbg(dev, "Local CA ACK delay: %d, max MTU: %d, port width cap: %d\n",
dev_cap->local_ca_ack_delay, 128 << dev_cap->max_mtu[1],
dev_cap->local_ca_ack_delay, 128 << dev_cap->ib_mtu[1],
dev_cap->max_port_width[1]);
mlx4_dbg(dev, "Max SQ desc size: %d, max SQ S/G: %d\n",
dev_cap->max_sq_desc_sz, dev_cap->max_sq_sg);
Expand Down Expand Up @@ -824,7 +827,7 @@ int mlx4_INIT_PORT(struct mlx4_dev *dev, int port)
flags |= (dev->caps.port_width_cap[port] & 0xf) << INIT_PORT_PORT_WIDTH_SHIFT;
MLX4_PUT(inbox, flags, INIT_PORT_FLAGS_OFFSET);

field = 128 << dev->caps.mtu_cap[port];
field = 128 << dev->caps.ib_mtu_cap[port];
MLX4_PUT(inbox, field, INIT_PORT_MTU_OFFSET);
field = dev->caps.gid_table_len[port];
MLX4_PUT(inbox, field, INIT_PORT_MAX_GID_OFFSET);
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4 changes: 3 additions & 1 deletion drivers/net/mlx4/fw.h
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Original file line number Diff line number Diff line change
Expand Up @@ -66,11 +66,13 @@ struct mlx4_dev_cap {
int local_ca_ack_delay;
int num_ports;
u32 max_msg_sz;
int max_mtu[MLX4_MAX_PORTS + 1];
int ib_mtu[MLX4_MAX_PORTS + 1];
int max_port_width[MLX4_MAX_PORTS + 1];
int max_vl[MLX4_MAX_PORTS + 1];
int max_gids[MLX4_MAX_PORTS + 1];
int max_pkeys[MLX4_MAX_PORTS + 1];
u64 def_mac[MLX4_MAX_PORTS + 1];
u16 eth_mtu[MLX4_MAX_PORTS + 1];
u16 stat_rate_support;
u32 flags;
int reserved_uars;
Expand Down
4 changes: 3 additions & 1 deletion drivers/net/mlx4/main.c
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Original file line number Diff line number Diff line change
Expand Up @@ -133,10 +133,12 @@ static int mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
dev->caps.num_ports = dev_cap->num_ports;
for (i = 1; i <= dev->caps.num_ports; ++i) {
dev->caps.vl_cap[i] = dev_cap->max_vl[i];
dev->caps.mtu_cap[i] = dev_cap->max_mtu[i];
dev->caps.ib_mtu_cap[i] = dev_cap->ib_mtu[i];
dev->caps.gid_table_len[i] = dev_cap->max_gids[i];
dev->caps.pkey_table_len[i] = dev_cap->max_pkeys[i];
dev->caps.port_width_cap[i] = dev_cap->max_port_width[i];
dev->caps.eth_mtu_cap[i] = dev_cap->eth_mtu[i];
dev->caps.def_mac[i] = dev_cap->def_mac[i];
}

dev->caps.num_uars = dev_cap->uar_size / PAGE_SIZE;
Expand Down
4 changes: 3 additions & 1 deletion include/linux/mlx4/device.h
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Original file line number Diff line number Diff line change
Expand Up @@ -166,7 +166,9 @@ struct mlx4_caps {
u64 fw_ver;
int num_ports;
int vl_cap[MLX4_MAX_PORTS + 1];
int mtu_cap[MLX4_MAX_PORTS + 1];
int ib_mtu_cap[MLX4_MAX_PORTS + 1];
u64 def_mac[MLX4_MAX_PORTS + 1];
int eth_mtu_cap[MLX4_MAX_PORTS + 1];
int gid_table_len[MLX4_MAX_PORTS + 1];
int pkey_table_len[MLX4_MAX_PORTS + 1];
int local_ca_ack_delay;
Expand Down

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