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Message-Id: <1387480818-3932-5-git-send-email-amirv@mellanox.com>
Date: Thu, 19 Dec 2013 21:20:12 +0200
From: Amir Vadai <amirv@...lanox.com>
To: "David S. Miller" <davem@...emloft.net>
Cc: Or Gerlitz <ogerlitz@...lanox.com>,
Yevgeny Petrilin <yevgenyp@...lanox.com>,
Amir Vadai <amirv@...lanox.com>, netdev@...r.kernel.org,
Hadar Hen Zion <hadarh@...lanox.com>
Subject: [PATCH net-next V2 04/10] net/mlx4_core: Expose physical port id as PF/VF capability
From: Hadar Hen Zion <hadarh@...lanox.com>
Add the infrastructure needed to support ndo_get_phys_port_id which
allows users to identify to which physical port a net-device is connected
to by reading a unique port id.
This will work for VFs and PFs.
The driver uses a new device capability - phys_port_id, The PF driver
reads the port phys_port_id from Firmware and stores it. The VF driver
reads the port phys_port_id from the PF using QUERY_FUNC_CAP command.
Signed-off-by: Hadar Hen Zion <hadarh@...lanox.com>
Signed-off-by: Amir Vadai <amirv@...lanox.com>
---
drivers/net/ethernet/mellanox/mlx4/fw.c | 45 +++++++++++++++++++++++++++++++
drivers/net/ethernet/mellanox/mlx4/fw.h | 1 +
drivers/net/ethernet/mellanox/mlx4/main.c | 5 ++++
include/linux/mlx4/device.h | 2 ++
4 files changed, 53 insertions(+)
diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.c b/drivers/net/ethernet/mellanox/mlx4/fw.c
index bfe91ae..27a8434 100644
--- a/drivers/net/ethernet/mellanox/mlx4/fw.c
+++ b/drivers/net/ethernet/mellanox/mlx4/fw.c
@@ -214,6 +214,7 @@ int mlx4_QUERY_FUNC_CAP_wrapper(struct mlx4_dev *dev, int slave,
#define QUERY_FUNC_CAP_QP0_PROXY 0x14
#define QUERY_FUNC_CAP_QP1_TUNNEL 0x18
#define QUERY_FUNC_CAP_QP1_PROXY 0x1c
+#define QUERY_FUNC_CAP_PHYS_PORT_ID 0x28
#define QUERY_FUNC_CAP_FLAGS1_FORCE_MAC 0x40
#define QUERY_FUNC_CAP_FLAGS1_FORCE_VLAN 0x80
@@ -242,6 +243,9 @@ int mlx4_QUERY_FUNC_CAP_wrapper(struct mlx4_dev *dev, int slave,
size += 2;
MLX4_PUT(outbox->buf, size, QUERY_FUNC_CAP_QP1_PROXY);
+ MLX4_PUT(outbox->buf, dev->caps.phys_port_id[vhcr->in_modifier],
+ QUERY_FUNC_CAP_PHYS_PORT_ID);
+
} else if (vhcr->op_modifier == 0) {
/* enable rdma and ethernet interfaces, and new quota locations */
field = (QUERY_FUNC_CAP_FLAG_ETH | QUERY_FUNC_CAP_FLAG_RDMA |
@@ -432,6 +436,10 @@ int mlx4_QUERY_FUNC_CAP(struct mlx4_dev *dev, u32 gen_or_port,
MLX4_GET(size, outbox, QUERY_FUNC_CAP_QP1_PROXY);
func_cap->qp1_proxy_qpn = size & 0xFFFFFF;
+ if (func_cap->flags1 & QUERY_FUNC_CAP_FLAGS1_NIC_INFO)
+ MLX4_GET(func_cap->phys_port_id, outbox,
+ QUERY_FUNC_CAP_PHYS_PORT_ID);
+
/* All other resources are allocated by the master, but we still report
* 'num' and 'reserved' capabilities as follows:
* - num remains the maximum resource index
@@ -1712,6 +1720,43 @@ int mlx4_NOP(struct mlx4_dev *dev)
return mlx4_cmd(dev, 0, 0x1f, 0, MLX4_CMD_NOP, 100, MLX4_CMD_NATIVE);
}
+int mlx4_get_phys_port_id(struct mlx4_dev *dev)
+{
+ u8 port;
+ u32 *outbox;
+ struct mlx4_cmd_mailbox *mailbox;
+ u32 in_mod;
+ u32 guid_hi, guid_lo;
+ int err, ret = 0;
+#define MOD_STAT_CFG_PORT_OFFSET 8
+#define MOD_STAT_CFG_GUID_H 0X14
+#define MOD_STAT_CFG_GUID_L 0X1c
+
+ mailbox = mlx4_alloc_cmd_mailbox(dev);
+ if (IS_ERR(mailbox))
+ return PTR_ERR(mailbox);
+ outbox = mailbox->buf;
+
+ for (port = 1; port <= dev->caps.num_ports; port++) {
+ in_mod = port << MOD_STAT_CFG_PORT_OFFSET;
+ err = mlx4_cmd_box(dev, 0, mailbox->dma, in_mod, 0x2,
+ MLX4_CMD_MOD_STAT_CFG, MLX4_CMD_TIME_CLASS_A,
+ MLX4_CMD_NATIVE);
+ if (err) {
+ mlx4_err(dev, "Fail to get port %d uplink guid\n",
+ port);
+ ret = err;
+ } else {
+ MLX4_GET(guid_hi, outbox, MOD_STAT_CFG_GUID_H);
+ MLX4_GET(guid_lo, outbox, MOD_STAT_CFG_GUID_L);
+ dev->caps.phys_port_id[port] = (u64)guid_lo |
+ (u64)guid_hi << 32;
+ }
+ }
+ mlx4_free_cmd_mailbox(dev, mailbox);
+ return ret;
+}
+
#define MLX4_WOL_SETUP_MODE (5 << 28)
int mlx4_wol_read(struct mlx4_dev *dev, u64 *config, int port)
{
diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.h b/drivers/net/ethernet/mellanox/mlx4/fw.h
index 9d95298..6811ee0 100644
--- a/drivers/net/ethernet/mellanox/mlx4/fw.h
+++ b/drivers/net/ethernet/mellanox/mlx4/fw.h
@@ -141,6 +141,7 @@ struct mlx4_func_cap {
u8 physical_port;
u8 port_flags;
u8 flags1;
+ u64 phys_port_id;
};
struct mlx4_adapter {
diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
index b37478d..6b13a15 100644
--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -606,6 +606,7 @@ static int mlx4_slave_cap(struct mlx4_dev *dev)
dev->caps.qp1_tunnel[i - 1] = func_cap.qp1_tunnel_qpn;
dev->caps.qp1_proxy[i - 1] = func_cap.qp1_proxy_qpn;
dev->caps.port_mask[i] = dev->caps.port_type[i];
+ dev->caps.phys_port_id[i] = func_cap.phys_port_id;
if (mlx4_get_slave_pkey_gid_tbl_len(dev, i,
&dev->caps.gid_table_len[i],
&dev->caps.pkey_table_len[i]))
@@ -1484,6 +1485,10 @@ static int mlx4_init_hca(struct mlx4_dev *dev)
choose_steering_mode(dev, &dev_cap);
+ err = mlx4_get_phys_port_id(dev);
+ if (err)
+ mlx4_err(dev, "Fail to get physical port id\n");
+
if (mlx4_is_master(dev))
mlx4_parav_master_pf_caps(dev);
diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h
index 7d3a523..294b7c5 100644
--- a/include/linux/mlx4/device.h
+++ b/include/linux/mlx4/device.h
@@ -454,6 +454,7 @@ struct mlx4_caps {
u32 userspace_caps; /* userspace must be aware of these */
u32 function_caps; /* VFs must be aware of these */
u16 hca_core_clock;
+ u64 phys_port_id[MLX4_MAX_PORTS + 1];
};
struct mlx4_buf_list {
@@ -1113,6 +1114,7 @@ int mlx4_assign_eq(struct mlx4_dev *dev, char *name, struct cpu_rmap *rmap,
int *vector);
void mlx4_release_eq(struct mlx4_dev *dev, int vec);
+int mlx4_get_phys_port_id(struct mlx4_dev *dev);
int mlx4_wol_read(struct mlx4_dev *dev, u64 *config, int port);
int mlx4_wol_write(struct mlx4_dev *dev, u64 config, int port);
--
1.8.3.4
--
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