[07/25] mlx4_core: add port para-virtualization

Message ID	4AF19E27.3060808@mellanox.co.il (mailing list archive)
State	Superseded, archived
Headers	show Received: from vger.kernel.org (vger.kernel.org [209.132.176.167]) by demeter.kernel.org (8.14.2/8.14.2) with ESMTP id nA4CXDQC022451 for <patchwork-linux-rdma@patchwork.kernel.org>; Wed, 4 Nov 2009 12:33:14 GMT Message-ID: <4AF19E27.3060808@mellanox.co.il> Date: Wed, 04 Nov 2009 17:30:47 +0200 From: Yevgeny Petrilin <yevgenyp@mellanox.co.il> User-Agent: Thunderbird 2.0.0.23 (X11/20090812) MIME-Version: 1.0 To: rdreier@cisco.com CC: linux-rdma@vger.kernel.org, netdev@vger.kernel.org, liranl@mellanox.co.il, tziporet@mellanox.co.il, yevgenyp@mellanox.co.il Subject: [PATCH 07/25] mlx4_core: add port para-virtualization Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk

diff --git a/drivers/net/mlx4/cmd.c b/drivers/net/mlx4/cmd.c index dd23aba..d2646d1 100644 --- a/drivers/net/mlx4/cmd.c +++ b/drivers/net/mlx4/cmd.c @@ -526,6 +526,11 @@ static struct mlx4_cmd_info { {MLX4_CMD_QUERY_FW, 0, 1, 0, NULL, NULL}, {MLX4_CMD_QUERY_ADAPTER, 0, 1, 0, NULL, NULL}, + {MLX4_CMD_INIT_PORT, 0, 0, 0, NULL, mlx4_INIT_PORT_wrapper}, + {MLX4_CMD_CLOSE_PORT, 0, 0, 0, NULL, mlx4_CLOSE_PORT_wrapper}, + {MLX4_CMD_QUERY_PORT, 0, 1, 0, NULL, mlx4_QUERY_PORT_wrapper}, + {MLX4_CMD_SET_PORT, 1, 0, 0, NULL, mlx4_SET_PORT_wrapper}, + {MLX4_CMD_SW2HW_EQ, 1, 0, 0, NULL, NULL}, /* need verifier */ {MLX4_CMD_NOP, 0, 0, 0, NULL, NULL}, {MLX4_CMD_ALLOC_RES, 0, 0, 1, NULL, mlx4_RESOURCE_wrapper}, diff --git a/drivers/net/mlx4/fw.c b/drivers/net/mlx4/fw.c index 4ca8060..a63f84a 100644 --- a/drivers/net/mlx4/fw.c +++ b/drivers/net/mlx4/fw.c @@ -135,6 +135,14 @@ int mlx4_MOD_STAT_CFG(struct mlx4_dev *dev, struct mlx4_mod_stat_cfg *cfg) return err; } +int mlx4_QUERY_PORT_wrapper(struct mlx4_dev *dev, int slave, struct mlx4_vhcr *vhcr, + struct mlx4_cmd_mailbox *inbox, + struct mlx4_cmd_mailbox *outbox) +{ + return mlx4_cmd_box(dev, 0, outbox->dma, vhcr->in_modifier, 0, MLX4_CMD_QUERY_PORT, + MLX4_CMD_TIME_CLASS_B); +} + int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap) { struct mlx4_cmd_mailbox *mailbox; @@ -809,6 +817,29 @@ int mlx4_INIT_HCA(struct mlx4_dev *dev, struct mlx4_init_hca_param *param) return err; } +int mlx4_INIT_PORT_wrapper(struct mlx4_dev *dev, int slave, struct mlx4_vhcr *vhcr, + struct mlx4_cmd_mailbox *inbox, + struct mlx4_cmd_mailbox *outbox) +{ + struct mlx4_priv *priv = mlx4_priv(dev); + int port; + int err; + + port = vhcr->in_modifier; + if (priv->mfunc.master.slave_state[slave].init_port_mask & (1 << port)) + return 0; + + /* Enable port only if it was previously disabled */ + if (!priv->mfunc.master.init_port_ref[port]) { + err = mlx4_INIT_PORT(dev, port); + if (err) + return err; + } + ++priv->mfunc.master.init_port_ref[port]; + priv->mfunc.master.slave_state[slave].init_port_mask |= (1 << port); + return 0; +} + int mlx4_INIT_PORT(struct mlx4_dev *dev, int port) { struct mlx4_cmd_mailbox *mailbox; @@ -863,6 +894,30 @@ int mlx4_INIT_PORT(struct mlx4_dev *dev, int port) } EXPORT_SYMBOL_GPL(mlx4_INIT_PORT); +int mlx4_CLOSE_PORT_wrapper(struct mlx4_dev *dev, int slave, struct mlx4_vhcr *vhcr, + struct mlx4_cmd_mailbox *inbox, + struct mlx4_cmd_mailbox *outbox) +{ + struct mlx4_priv *priv = mlx4_priv(dev); + int port; + int err; + + port = vhcr->in_modifier; + if (!(priv->mfunc.master.slave_state[slave].init_port_mask & (1 << port))) + return 0; + + /* CX1: master doesn't have interfaces - close port if this slave is + * the last user */ + if (priv->mfunc.master.init_port_ref[port] == 1) { + err = mlx4_CLOSE_PORT(dev, port); + if (err) + return err; + } + --priv->mfunc.master.init_port_ref[port]; + priv->mfunc.master.slave_state[slave].init_port_mask &= ~(1 << port); + return 0; +} + int mlx4_CLOSE_PORT(struct mlx4_dev *dev, int port) { return mlx4_cmd(dev, 0, port, 0, MLX4_CMD_CLOSE_PORT, 1000); diff --git a/drivers/net/mlx4/mlx4.h b/drivers/net/mlx4/mlx4.h index fafa293..8a7a041 100644 --- a/drivers/net/mlx4/mlx4.h +++ b/drivers/net/mlx4/mlx4.h @@ -46,6 +46,7 @@ #include <linux/mlx4/driver.h> #include <linux/mlx4/doorbell.h> #include <linux/mlx4/cmd.h> +#include <rdma/ib_verbs.h> #define DRV_NAME "mlx4_core" #define PFX DRV_NAME ": " @@ -212,11 +213,14 @@ struct mlx4_slave_eqe { struct mlx4_slave_state { u8 comm_toggle; u8 last_cmd; + u8 init_port_mask; dma_addr_t vhcr_dma; + __be32 ib_cap_mask[MLX4_MAX_PORTS + 1]; }; struct mlx4_mfunc_master_ctx { struct mlx4_slave_state *slave_state; + int init_port_ref[MLX4_MAX_PORTS + 1]; }; struct mlx4_vhcr { @@ -505,6 +509,18 @@ void mlx4_init_mac_table(struct mlx4_dev *dev, struct mlx4_mac_table *table); void mlx4_init_vlan_table(struct mlx4_dev *dev, struct mlx4_vlan_table *table); int mlx4_SET_PORT(struct mlx4_dev *dev, u8 port); +int mlx4_SET_PORT_wrapper(struct mlx4_dev *dev, int slave, struct mlx4_vhcr *vhcr, + struct mlx4_cmd_mailbox *inbox, + struct mlx4_cmd_mailbox *outbox); +int mlx4_INIT_PORT_wrapper(struct mlx4_dev *dev, int slave, struct mlx4_vhcr *vhcr, + struct mlx4_cmd_mailbox *inbox, + struct mlx4_cmd_mailbox *outbox); +int mlx4_CLOSE_PORT_wrapper(struct mlx4_dev *dev, int slave, struct mlx4_vhcr *vhcr, + struct mlx4_cmd_mailbox *inbox, + struct mlx4_cmd_mailbox *outbox); +int mlx4_QUERY_PORT_wrapper(struct mlx4_dev *dev, int slave, struct mlx4_vhcr *vhcr, + struct mlx4_cmd_mailbox *inbox, + struct mlx4_cmd_mailbox *outbox); int mlx4_get_port_ib_caps(struct mlx4_dev *dev, u8 port, __be32 *caps); int mlx4_MCAST_wrapper(struct mlx4_dev *dev, int slave, struct mlx4_vhcr *vhcr, diff --git a/drivers/net/mlx4/port.c b/drivers/net/mlx4/port.c index 606aa58..67f0751 100644 --- a/drivers/net/mlx4/port.c +++ b/drivers/net/mlx4/port.c @@ -294,6 +294,82 @@ int mlx4_get_port_ib_caps(struct mlx4_dev *dev, u8 port, __be32 *caps) return err; } +int mlx4_SET_PORT_wrapper(struct mlx4_dev *dev, int slave, struct mlx4_vhcr *vhcr, + struct mlx4_cmd_mailbox *inbox, + struct mlx4_cmd_mailbox *outbox) +{ + struct mlx4_priv *priv = mlx4_priv(dev); + int reset_qkey_viols; + int port; + int is_eth; + int err; + int i; + __be32 agg_cap_mask; + __be32 slave_cap_mask; + __be32 new_cap_mask; + + port = vhcr->in_modifier & 0xff; + is_eth = vhcr->op_modifier; + + /* For Ethernet, we currently support only slave0. + * TODO: add multi-vf support */ + if (is_eth) { + if (slave) + return -EINVAL; + return mlx4_cmd(dev, inbox->dma, vhcr->in_modifier, + vhcr->op_modifier, + MLX4_CMD_SET_PORT, + MLX4_CMD_TIME_CLASS_B); + } + + /* For IB, we only consider: + * - The capability mask, which is set to the aggregate of all slave frunction + * capabilities + * - The QKey violatin counter - reset according to each request. + */ + + if (dev->flags & MLX4_FLAG_OLD_PORT_CMDS) { + reset_qkey_viols = (*(u8 *) inbox->buf) & 0x40; + new_cap_mask = ((__be32 *) inbox->buf)[2]; + } else { + reset_qkey_viols = ((u8 *) inbox->buf)[3] & 0x1; + new_cap_mask = ((__be32 *) inbox->buf)[1]; + } + + /* CX1: only slave0 has access to qp0 */ + if (slave && (new_cap_mask & cpu_to_be32(IB_PORT_SM))) { + mlx4_warn(dev, "denying sm port capability for slave:%d\n", slave); + return -EINVAL; + } + + agg_cap_mask = 0; + slave_cap_mask = priv->mfunc.master.slave_state[slave].ib_cap_mask[port]; + priv->mfunc.master.slave_state[slave].ib_cap_mask[port] = new_cap_mask; + for (i = 0; i < dev->num_slaves; i++) + agg_cap_mask |= priv->mfunc.master.slave_state[slave].ib_cap_mask[port]; + +#if 0 + mlx4_warn(dev, "old_slave_cap:0x%x slave_cap:0x%x cap:0x%x qkey_reset:%d\n", + slave_cap_mask, priv->mfunc.master.slave_state[slave].ib_cap_mask[port], + agg_cap_mask, reset_qkey_viols); +#endif + + memset(inbox->buf, 0, 256); + if (dev->flags & MLX4_FLAG_OLD_PORT_CMDS) { + *(u8 *) inbox->buf = !!reset_qkey_viols << 6; + ((__be32 *) inbox->buf)[2] = agg_cap_mask; + } else { + ((u8 *) inbox->buf)[3] = !!reset_qkey_viols; + ((__be32 *) inbox->buf)[1] = agg_cap_mask; + } + + err = mlx4_cmd(dev, inbox->dma, port, is_eth, MLX4_CMD_SET_PORT, + MLX4_CMD_TIME_CLASS_B); + if (err) + priv->mfunc.master.slave_state[slave].ib_cap_mask[port] = slave_cap_mask; + return err; +} + int mlx4_SET_PORT(struct mlx4_dev *dev, u8 port) { struct mlx4_cmd_mailbox *mailbox;

[07/25] mlx4_core: add port para-virtualization

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