main.c 38.4 KB
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/*
 * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
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 * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
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 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#include <linux/module.h>
#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/errno.h>
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#include <linux/netdevice.h>
#include <linux/inetdevice.h>
#include <linux/rtnetlink.h>
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#include <linux/if_vlan.h>
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#include <rdma/ib_smi.h>
#include <rdma/ib_user_verbs.h>
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#include <rdma/ib_addr.h>
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#include <linux/mlx4/driver.h>
#include <linux/mlx4/cmd.h>

#include "mlx4_ib.h"
#include "user.h"

#define DRV_NAME	"mlx4_ib"
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#define DRV_VERSION	"1.0"
#define DRV_RELDATE	"April 4, 2008"
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MODULE_AUTHOR("Roland Dreier");
MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver");
MODULE_LICENSE("Dual BSD/GPL");
MODULE_VERSION(DRV_VERSION);

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static const char mlx4_ib_version[] =
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	DRV_NAME ": Mellanox ConnectX InfiniBand driver v"
	DRV_VERSION " (" DRV_RELDATE ")\n";

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struct update_gid_work {
	struct work_struct	work;
	union ib_gid		gids[128];
	struct mlx4_ib_dev     *dev;
	int			port;
};

static struct workqueue_struct *wq;

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static void init_query_mad(struct ib_smp *mad)
{
	mad->base_version  = 1;
	mad->mgmt_class    = IB_MGMT_CLASS_SUBN_LID_ROUTED;
	mad->class_version = 1;
	mad->method	   = IB_MGMT_METHOD_GET;
}

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static union ib_gid zgid;

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static int mlx4_ib_query_device(struct ib_device *ibdev,
				struct ib_device_attr *props)
{
	struct mlx4_ib_dev *dev = to_mdev(ibdev);
	struct ib_smp *in_mad  = NULL;
	struct ib_smp *out_mad = NULL;
	int err = -ENOMEM;

	in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
	out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
	if (!in_mad || !out_mad)
		goto out;

	init_query_mad(in_mad);
	in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;

	err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad, out_mad);
	if (err)
		goto out;

	memset(props, 0, sizeof *props);

	props->fw_ver = dev->dev->caps.fw_ver;
	props->device_cap_flags    = IB_DEVICE_CHANGE_PHY_PORT |
		IB_DEVICE_PORT_ACTIVE_EVENT		|
		IB_DEVICE_SYS_IMAGE_GUID		|
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		IB_DEVICE_RC_RNR_NAK_GEN		|
		IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
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	if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR)
		props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
	if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR)
		props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
	if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM)
		props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
	if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT)
		props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
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	if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM)
		props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
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	if (dev->dev->caps.max_gso_sz && dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH)
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		props->device_cap_flags |= IB_DEVICE_UD_TSO;
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	if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY)
		props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY;
	if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) &&
	    (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) &&
	    (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR))
		props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
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	if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)
		props->device_cap_flags |= IB_DEVICE_XRC;
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	props->vendor_id	   = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
		0xffffff;
	props->vendor_part_id	   = be16_to_cpup((__be16 *) (out_mad->data + 30));
	props->hw_ver		   = be32_to_cpup((__be32 *) (out_mad->data + 32));
	memcpy(&props->sys_image_guid, out_mad->data +	4, 8);

	props->max_mr_size	   = ~0ull;
	props->page_size_cap	   = dev->dev->caps.page_size_cap;
	props->max_qp		   = dev->dev->caps.num_qps - dev->dev->caps.reserved_qps;
	props->max_qp_wr	   = dev->dev->caps.max_wqes;
	props->max_sge		   = min(dev->dev->caps.max_sq_sg,
					 dev->dev->caps.max_rq_sg);
	props->max_cq		   = dev->dev->caps.num_cqs - dev->dev->caps.reserved_cqs;
	props->max_cqe		   = dev->dev->caps.max_cqes;
	props->max_mr		   = dev->dev->caps.num_mpts - dev->dev->caps.reserved_mrws;
	props->max_pd		   = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
	props->max_qp_rd_atom	   = dev->dev->caps.max_qp_dest_rdma;
	props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
	props->max_res_rd_atom	   = props->max_qp_rd_atom * props->max_qp;
	props->max_srq		   = dev->dev->caps.num_srqs - dev->dev->caps.reserved_srqs;
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	props->max_srq_wr	   = dev->dev->caps.max_srq_wqes - 1;
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	props->max_srq_sge	   = dev->dev->caps.max_srq_sge;
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	props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES;
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	props->local_ca_ack_delay  = dev->dev->caps.local_ca_ack_delay;
	props->atomic_cap	   = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
		IB_ATOMIC_HCA : IB_ATOMIC_NONE;
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	props->masked_atomic_cap   = IB_ATOMIC_HCA;
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	props->max_pkeys	   = dev->dev->caps.pkey_table_len[1];
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	props->max_mcast_grp	   = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
	props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
	props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
					   props->max_mcast_grp;
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	props->max_map_per_fmr = dev->dev->caps.max_fmr_maps;
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out:
	kfree(in_mad);
	kfree(out_mad);

	return err;
}

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static enum rdma_link_layer
mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num)
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{
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	struct mlx4_dev *dev = to_mdev(device)->dev;
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	return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ?
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		IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET;
}
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static int ib_link_query_port(struct ib_device *ibdev, u8 port,
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			      struct ib_port_attr *props)
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{
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	struct ib_smp *in_mad  = NULL;
	struct ib_smp *out_mad = NULL;
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	int ext_active_speed;
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	int err = -ENOMEM;

	in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
	out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
	if (!in_mad || !out_mad)
		goto out;

	init_query_mad(in_mad);
	in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
	in_mad->attr_mod = cpu_to_be32(port);

	err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL,
				in_mad, out_mad);
	if (err)
		goto out;

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	props->lid		= be16_to_cpup((__be16 *) (out_mad->data + 16));
	props->lmc		= out_mad->data[34] & 0x7;
	props->sm_lid		= be16_to_cpup((__be16 *) (out_mad->data + 18));
	props->sm_sl		= out_mad->data[36] & 0xf;
	props->state		= out_mad->data[32] & 0xf;
	props->phys_state	= out_mad->data[33] >> 4;
	props->port_cap_flags	= be32_to_cpup((__be32 *) (out_mad->data + 20));
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	props->gid_tbl_len	= to_mdev(ibdev)->dev->caps.gid_table_len[port];
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	props->max_msg_sz	= to_mdev(ibdev)->dev->caps.max_msg_sz;
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	props->pkey_tbl_len	= to_mdev(ibdev)->dev->caps.pkey_table_len[port];
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	props->bad_pkey_cntr	= be16_to_cpup((__be16 *) (out_mad->data + 46));
	props->qkey_viol_cntr	= be16_to_cpup((__be16 *) (out_mad->data + 48));
	props->active_width	= out_mad->data[31] & 0xf;
	props->active_speed	= out_mad->data[35] >> 4;
	props->max_mtu		= out_mad->data[41] & 0xf;
	props->active_mtu	= out_mad->data[36] >> 4;
	props->subnet_timeout	= out_mad->data[51] & 0x1f;
	props->max_vl_num	= out_mad->data[37] >> 4;
	props->init_type_reply	= out_mad->data[41] >> 4;

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	/* Check if extended speeds (EDR/FDR/...) are supported */
	if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
		ext_active_speed = out_mad->data[62] >> 4;

		switch (ext_active_speed) {
		case 1:
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			props->active_speed = IB_SPEED_FDR;
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			break;
		case 2:
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			props->active_speed = IB_SPEED_EDR;
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			break;
		}
	}

	/* If reported active speed is QDR, check if is FDR-10 */
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	if (props->active_speed == IB_SPEED_QDR) {
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		init_query_mad(in_mad);
		in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO;
		in_mad->attr_mod = cpu_to_be32(port);

		err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port,
				   NULL, NULL, in_mad, out_mad);
		if (err)
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			goto out;
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		/* Checking LinkSpeedActive for FDR-10 */
		if (out_mad->data[15] & 0x1)
			props->active_speed = IB_SPEED_FDR10;
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	}
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	/* Avoid wrong speed value returned by FW if the IB link is down. */
	if (props->state == IB_PORT_DOWN)
		 props->active_speed = IB_SPEED_SDR;

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out:
	kfree(in_mad);
	kfree(out_mad);
	return err;
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}

static u8 state_to_phys_state(enum ib_port_state state)
{
	return state == IB_PORT_ACTIVE ? 5 : 3;
}

static int eth_link_query_port(struct ib_device *ibdev, u8 port,
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			       struct ib_port_attr *props)
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{
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	struct mlx4_ib_dev *mdev = to_mdev(ibdev);
	struct mlx4_ib_iboe *iboe = &mdev->iboe;
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	struct net_device *ndev;
	enum ib_mtu tmp;
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	struct mlx4_cmd_mailbox *mailbox;
	int err = 0;

	mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
	if (IS_ERR(mailbox))
		return PTR_ERR(mailbox);
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	err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0,
			   MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B,
			   MLX4_CMD_WRAPPED);
	if (err)
		goto out;

	props->active_width	=  (((u8 *)mailbox->buf)[5] == 0x40) ?
						IB_WIDTH_4X : IB_WIDTH_1X;
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	props->active_speed	= IB_SPEED_QDR;
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	props->port_cap_flags	= IB_PORT_CM_SUP;
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	props->gid_tbl_len	= mdev->dev->caps.gid_table_len[port];
	props->max_msg_sz	= mdev->dev->caps.max_msg_sz;
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	props->pkey_tbl_len	= 1;
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	props->max_mtu		= IB_MTU_4096;
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	props->max_vl_num	= 2;
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	props->state		= IB_PORT_DOWN;
	props->phys_state	= state_to_phys_state(props->state);
	props->active_mtu	= IB_MTU_256;
	spin_lock(&iboe->lock);
	ndev = iboe->netdevs[port - 1];
	if (!ndev)
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		goto out_unlock;
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	tmp = iboe_get_mtu(ndev->mtu);
	props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256;

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	props->state		= (netif_running(ndev) && netif_carrier_ok(ndev)) ?
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					IB_PORT_ACTIVE : IB_PORT_DOWN;
	props->phys_state	= state_to_phys_state(props->state);
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out_unlock:
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	spin_unlock(&iboe->lock);
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out:
	mlx4_free_cmd_mailbox(mdev->dev, mailbox);
	return err;
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}

static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
			      struct ib_port_attr *props)
{
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	int err;
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	memset(props, 0, sizeof *props);

	err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ?
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		ib_link_query_port(ibdev, port, props) :
				eth_link_query_port(ibdev, port, props);
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	return err;
}

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static int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
			       union ib_gid *gid)
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{
	struct ib_smp *in_mad  = NULL;
	struct ib_smp *out_mad = NULL;
	int err = -ENOMEM;

	in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
	out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
	if (!in_mad || !out_mad)
		goto out;

	init_query_mad(in_mad);
	in_mad->attr_id  = IB_SMP_ATTR_PORT_INFO;
	in_mad->attr_mod = cpu_to_be32(port);

	err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
	if (err)
		goto out;

	memcpy(gid->raw, out_mad->data + 8, 8);

	init_query_mad(in_mad);
	in_mad->attr_id  = IB_SMP_ATTR_GUID_INFO;
	in_mad->attr_mod = cpu_to_be32(index / 8);

	err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
	if (err)
		goto out;

	memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);

out:
	kfree(in_mad);
	kfree(out_mad);
	return err;
}

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static int iboe_query_gid(struct ib_device *ibdev, u8 port, int index,
			  union ib_gid *gid)
{
	struct mlx4_ib_dev *dev = to_mdev(ibdev);

	*gid = dev->iboe.gid_table[port - 1][index];

	return 0;
}

static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
			     union ib_gid *gid)
{
	if (rdma_port_get_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND)
		return __mlx4_ib_query_gid(ibdev, port, index, gid);
	else
		return iboe_query_gid(ibdev, port, index, gid);
}

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static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
			      u16 *pkey)
{
	struct ib_smp *in_mad  = NULL;
	struct ib_smp *out_mad = NULL;
	int err = -ENOMEM;

	in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
	out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
	if (!in_mad || !out_mad)
		goto out;

	init_query_mad(in_mad);
	in_mad->attr_id  = IB_SMP_ATTR_PKEY_TABLE;
	in_mad->attr_mod = cpu_to_be32(index / 32);

	err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
	if (err)
		goto out;

	*pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);

out:
	kfree(in_mad);
	kfree(out_mad);
	return err;
}

static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
				 struct ib_device_modify *props)
{
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	struct mlx4_cmd_mailbox *mailbox;

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	if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
		return -EOPNOTSUPP;

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	if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
		return 0;

	spin_lock(&to_mdev(ibdev)->sm_lock);
	memcpy(ibdev->node_desc, props->node_desc, 64);
	spin_unlock(&to_mdev(ibdev)->sm_lock);

	/*
	 * If possible, pass node desc to FW, so it can generate
	 * a 144 trap.  If cmd fails, just ignore.
	 */
	mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev);
	if (IS_ERR(mailbox))
		return 0;

	memset(mailbox->buf, 0, 256);
	memcpy(mailbox->buf, props->node_desc, 64);
	mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0,
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		 MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
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	mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox);
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	return 0;
}

static int mlx4_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
			 u32 cap_mask)
{
	struct mlx4_cmd_mailbox *mailbox;
	int err;
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	u8 is_eth = dev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
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	mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
	if (IS_ERR(mailbox))
		return PTR_ERR(mailbox);

	memset(mailbox->buf, 0, 256);
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	if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
		*(u8 *) mailbox->buf	     = !!reset_qkey_viols << 6;
		((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
	} else {
		((u8 *) mailbox->buf)[3]     = !!reset_qkey_viols;
		((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask);
	}
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	err = mlx4_cmd(dev->dev, mailbox->dma, port, is_eth, MLX4_CMD_SET_PORT,
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		       MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
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	mlx4_free_cmd_mailbox(dev->dev, mailbox);
	return err;
}

static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
			       struct ib_port_modify *props)
{
	struct ib_port_attr attr;
	u32 cap_mask;
	int err;

	mutex_lock(&to_mdev(ibdev)->cap_mask_mutex);

	err = mlx4_ib_query_port(ibdev, port, &attr);
	if (err)
		goto out;

	cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
		~props->clr_port_cap_mask;

	err = mlx4_SET_PORT(to_mdev(ibdev), port,
			    !!(mask & IB_PORT_RESET_QKEY_CNTR),
			    cap_mask);

out:
	mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
	return err;
}

static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
						  struct ib_udata *udata)
{
	struct mlx4_ib_dev *dev = to_mdev(ibdev);
	struct mlx4_ib_ucontext *context;
	struct mlx4_ib_alloc_ucontext_resp resp;
	int err;

516 517 518
	if (!dev->ib_active)
		return ERR_PTR(-EAGAIN);

519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570
	resp.qp_tab_size      = dev->dev->caps.num_qps;
	resp.bf_reg_size      = dev->dev->caps.bf_reg_size;
	resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;

	context = kmalloc(sizeof *context, GFP_KERNEL);
	if (!context)
		return ERR_PTR(-ENOMEM);

	err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
	if (err) {
		kfree(context);
		return ERR_PTR(err);
	}

	INIT_LIST_HEAD(&context->db_page_list);
	mutex_init(&context->db_page_mutex);

	err = ib_copy_to_udata(udata, &resp, sizeof resp);
	if (err) {
		mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
		kfree(context);
		return ERR_PTR(-EFAULT);
	}

	return &context->ibucontext;
}

static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
{
	struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);

	mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
	kfree(context);

	return 0;
}

static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
{
	struct mlx4_ib_dev *dev = to_mdev(context->device);

	if (vma->vm_end - vma->vm_start != PAGE_SIZE)
		return -EINVAL;

	if (vma->vm_pgoff == 0) {
		vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);

		if (io_remap_pfn_range(vma, vma->vm_start,
				       to_mucontext(context)->uar.pfn,
				       PAGE_SIZE, vma->vm_page_prot))
			return -EAGAIN;
	} else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
571
		vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618

		if (io_remap_pfn_range(vma, vma->vm_start,
				       to_mucontext(context)->uar.pfn +
				       dev->dev->caps.num_uars,
				       PAGE_SIZE, vma->vm_page_prot))
			return -EAGAIN;
	} else
		return -EINVAL;

	return 0;
}

static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
				      struct ib_ucontext *context,
				      struct ib_udata *udata)
{
	struct mlx4_ib_pd *pd;
	int err;

	pd = kmalloc(sizeof *pd, GFP_KERNEL);
	if (!pd)
		return ERR_PTR(-ENOMEM);

	err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
	if (err) {
		kfree(pd);
		return ERR_PTR(err);
	}

	if (context)
		if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
			mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
			kfree(pd);
			return ERR_PTR(-EFAULT);
		}

	return &pd->ibpd;
}

static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
{
	mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
	kfree(pd);

	return 0;
}

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static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev,
					  struct ib_ucontext *context,
					  struct ib_udata *udata)
{
	struct mlx4_ib_xrcd *xrcd;
	int err;

	if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC))
		return ERR_PTR(-ENOSYS);

	xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL);
	if (!xrcd)
		return ERR_PTR(-ENOMEM);

	err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn);
	if (err)
		goto err1;

	xrcd->pd = ib_alloc_pd(ibdev);
	if (IS_ERR(xrcd->pd)) {
		err = PTR_ERR(xrcd->pd);
		goto err2;
	}

	xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, 1, 0);
	if (IS_ERR(xrcd->cq)) {
		err = PTR_ERR(xrcd->cq);
		goto err3;
	}

	return &xrcd->ibxrcd;

err3:
	ib_dealloc_pd(xrcd->pd);
err2:
	mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn);
err1:
	kfree(xrcd);
	return ERR_PTR(err);
}

static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd)
{
	ib_destroy_cq(to_mxrcd(xrcd)->cq);
	ib_dealloc_pd(to_mxrcd(xrcd)->pd);
	mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn);
	kfree(xrcd);

	return 0;
}

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static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid)
{
	struct mlx4_ib_qp *mqp = to_mqp(ibqp);
	struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
	struct mlx4_ib_gid_entry *ge;

	ge = kzalloc(sizeof *ge, GFP_KERNEL);
	if (!ge)
		return -ENOMEM;

	ge->gid = *gid;
	if (mlx4_ib_add_mc(mdev, mqp, gid)) {
		ge->port = mqp->port;
		ge->added = 1;
	}

	mutex_lock(&mqp->mutex);
	list_add_tail(&ge->list, &mqp->gid_list);
	mutex_unlock(&mqp->mutex);

	return 0;
}

int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
		   union ib_gid *gid)
{
	u8 mac[6];
	struct net_device *ndev;
	int ret = 0;

	if (!mqp->port)
		return 0;

	spin_lock(&mdev->iboe.lock);
	ndev = mdev->iboe.netdevs[mqp->port - 1];
	if (ndev)
		dev_hold(ndev);
	spin_unlock(&mdev->iboe.lock);

	if (ndev) {
		rdma_get_mcast_mac((struct in6_addr *)gid, mac);
		rtnl_lock();
		dev_mc_add(mdev->iboe.netdevs[mqp->port - 1], mac);
		ret = 1;
		rtnl_unlock();
		dev_put(ndev);
	}

	return ret;
}

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static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
{
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	int err;
	struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
	struct mlx4_ib_qp *mqp = to_mqp(ibqp);

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	err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw,
				    !!(mqp->flags & MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK),
729
				    MLX4_PROT_IB_IPV6);
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	if (err)
		return err;

	err = add_gid_entry(ibqp, gid);
	if (err)
		goto err_add;

	return 0;

err_add:
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	mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, MLX4_PROT_IB_IPV6);
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	return err;
}

static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw)
{
	struct mlx4_ib_gid_entry *ge;
	struct mlx4_ib_gid_entry *tmp;
	struct mlx4_ib_gid_entry *ret = NULL;

	list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) {
		if (!memcmp(raw, ge->gid.raw, 16)) {
			ret = ge;
			break;
		}
	}

	return ret;
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}

static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
{
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	int err;
	struct mlx4_ib_dev *mdev = to_mdev(ibqp->device);
	struct mlx4_ib_qp *mqp = to_mqp(ibqp);
	u8 mac[6];
	struct net_device *ndev;
	struct mlx4_ib_gid_entry *ge;

	err = mlx4_multicast_detach(mdev->dev,
770
				    &mqp->mqp, gid->raw, MLX4_PROT_IB_IPV6);
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	if (err)
		return err;

	mutex_lock(&mqp->mutex);
	ge = find_gid_entry(mqp, gid->raw);
	if (ge) {
		spin_lock(&mdev->iboe.lock);
		ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL;
		if (ndev)
			dev_hold(ndev);
		spin_unlock(&mdev->iboe.lock);
		rdma_get_mcast_mac((struct in6_addr *)gid, mac);
		if (ndev) {
			rtnl_lock();
			dev_mc_del(mdev->iboe.netdevs[ge->port - 1], mac);
			rtnl_unlock();
			dev_put(ndev);
		}
		list_del(&ge->list);
		kfree(ge);
	} else
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		pr_warn("could not find mgid entry\n");
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	mutex_unlock(&mqp->mutex);

	return 0;
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}

static int init_node_data(struct mlx4_ib_dev *dev)
{
	struct ib_smp *in_mad  = NULL;
	struct ib_smp *out_mad = NULL;
	int err = -ENOMEM;

	in_mad  = kzalloc(sizeof *in_mad, GFP_KERNEL);
	out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
	if (!in_mad || !out_mad)
		goto out;

	init_query_mad(in_mad);
	in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;

	err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
	if (err)
		goto out;

	memcpy(dev->ib_dev.node_desc, out_mad->data, 64);

	in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;

	err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
	if (err)
		goto out;

	memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);

out:
	kfree(in_mad);
	kfree(out_mad);
	return err;
}

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static ssize_t show_hca(struct device *device, struct device_attribute *attr,
			char *buf)
835
{
836 837
	struct mlx4_ib_dev *dev =
		container_of(device, struct mlx4_ib_dev, ib_dev.dev);
838 839 840
	return sprintf(buf, "MT%d\n", dev->dev->pdev->device);
}

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static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
			   char *buf)
843
{
844 845
	struct mlx4_ib_dev *dev =
		container_of(device, struct mlx4_ib_dev, ib_dev.dev);
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	return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32),
		       (int) (dev->dev->caps.fw_ver >> 16) & 0xffff,
		       (int) dev->dev->caps.fw_ver & 0xffff);
}

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static ssize_t show_rev(struct device *device, struct device_attribute *attr,
			char *buf)
853
{
854 855
	struct mlx4_ib_dev *dev =
		container_of(device, struct mlx4_ib_dev, ib_dev.dev);
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	return sprintf(buf, "%x\n", dev->dev->rev_id);
}

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static ssize_t show_board(struct device *device, struct device_attribute *attr,
			  char *buf)
861
{
862 863 864 865
	struct mlx4_ib_dev *dev =
		container_of(device, struct mlx4_ib_dev, ib_dev.dev);
	return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN,
		       dev->dev->board_id);
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}

868 869 870 871
static DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
static DEVICE_ATTR(fw_ver,   S_IRUGO, show_fw_ver, NULL);
static DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
static DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
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873 874 875 876 877
static struct device_attribute *mlx4_class_attributes[] = {
	&dev_attr_hw_rev,
	&dev_attr_fw_ver,
	&dev_attr_hca_type,
	&dev_attr_board_id
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};

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static void mlx4_addrconf_ifid_eui48(u8 *eui, u16 vlan_id, struct net_device *dev)
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{
	memcpy(eui, dev->dev_addr, 3);
	memcpy(eui + 5, dev->dev_addr + 3, 3);
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	if (vlan_id < 0x1000) {
		eui[3] = vlan_id >> 8;
		eui[4] = vlan_id & 0xff;
	} else {
		eui[3] = 0xff;
		eui[4] = 0xfe;
	}
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	eui[0] ^= 2;
}

static void update_gids_task(struct work_struct *work)
{
	struct update_gid_work *gw = container_of(work, struct update_gid_work, work);
	struct mlx4_cmd_mailbox *mailbox;
	union ib_gid *gids;
	int err;
	struct mlx4_dev	*dev = gw->dev->dev;
	struct ib_event event;

	mailbox = mlx4_alloc_cmd_mailbox(dev);
	if (IS_ERR(mailbox)) {
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		pr_warn("update gid table failed %ld\n", PTR_ERR(mailbox));
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		return;
	}

	gids = mailbox->buf;
	memcpy(gids, gw->gids, sizeof gw->gids);

	err = mlx4_cmd(dev, mailbox->dma, MLX4_SET_PORT_GID_TABLE << 8 | gw->port,
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		       1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
		       MLX4_CMD_NATIVE);
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	if (err)
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		pr_warn("set port command failed\n");
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	else {
		memcpy(gw->dev->iboe.gid_table[gw->port - 1], gw->gids, sizeof gw->gids);
		event.device = &gw->dev->ib_dev;
		event.element.port_num = gw->port;
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		event.event    = IB_EVENT_GID_CHANGE;
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		ib_dispatch_event(&event);
	}

	mlx4_free_cmd_mailbox(dev, mailbox);
	kfree(gw);
}

static int update_ipv6_gids(struct mlx4_ib_dev *dev, int port, int clear)
{
	struct net_device *ndev = dev->iboe.netdevs[port - 1];
	struct update_gid_work *work;
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	struct net_device *tmp;
	int i;
	u8 *hits;
	int ret;
	union ib_gid gid;
	int free;
	int found;
	int need_update = 0;
	u16 vid;
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	work = kzalloc(sizeof *work, GFP_ATOMIC);
	if (!work)
		return -ENOMEM;

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	hits = kzalloc(128, GFP_ATOMIC);
	if (!hits) {
		ret = -ENOMEM;
		goto out;
	}

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	rcu_read_lock();
	for_each_netdev_rcu(&init_net, tmp) {
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		if (ndev && (tmp == ndev || rdma_vlan_dev_real_dev(tmp) == ndev)) {
			gid.global.subnet_prefix = cpu_to_be64(0xfe80000000000000LL);
			vid = rdma_vlan_dev_vlan_id(tmp);
			mlx4_addrconf_ifid_eui48(&gid.raw[8], vid, ndev);
			found = 0;
			free = -1;
			for (i = 0; i < 128; ++i) {
				if (free < 0 &&
				    !memcmp(&dev->iboe.gid_table[port - 1][i], &zgid, sizeof zgid))
					free = i;
				if (!memcmp(&dev->iboe.gid_table[port - 1][i], &gid, sizeof gid)) {
					hits[i] = 1;
					found = 1;
					break;
				}
			}

			if (!found) {
				if (tmp == ndev &&
				    (memcmp(&dev->iboe.gid_table[port - 1][0],
					    &gid, sizeof gid) ||
				     !memcmp(&dev->iboe.gid_table[port - 1][0],
					     &zgid, sizeof gid))) {
					dev->iboe.gid_table[port - 1][0] = gid;
					++need_update;
					hits[0] = 1;
				} else if (free >= 0) {
					dev->iboe.gid_table[port - 1][free] = gid;
					hits[free] = 1;
					++need_update;
				}
			}
		}
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	}
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	rcu_read_unlock();
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	for (i = 0; i < 128; ++i)
		if (!hits[i]) {
			if (memcmp(&dev->iboe.gid_table[port - 1][i], &zgid, sizeof zgid))
				++need_update;
			dev->iboe.gid_table[port - 1][i] = zgid;
		}
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	if (need_update) {
		memcpy(work->gids, dev->iboe.gid_table[port - 1], sizeof work->gids);
		INIT_WORK(&work->work, update_gids_task);
		work->port = port;
		work->dev = dev;
		queue_work(wq, &work->work);
	} else
		kfree(work);
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	kfree(hits);
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	return 0;
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out:
	kfree(work);
	return ret;
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}

static void handle_en_event(struct mlx4_ib_dev *dev, int port, unsigned long event)
{
	switch (event) {
	case NETDEV_UP:
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	case NETDEV_CHANGEADDR:
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		update_ipv6_gids(dev, port, 0);
		break;

	case NETDEV_DOWN:
		update_ipv6_gids(dev, port, 1);
		dev->iboe.netdevs[port - 1] = NULL;
	}
}

static void netdev_added(struct mlx4_ib_dev *dev, int port)
{
	update_ipv6_gids(dev, port, 0);
}

static void netdev_removed(struct mlx4_ib_dev *dev, int port)
{
	update_ipv6_gids(dev, port, 1);
}

static int mlx4_ib_netdev_event(struct notifier_block *this, unsigned long event,
				void *ptr)
{
	struct net_device *dev = ptr;
	struct mlx4_ib_dev *ibdev;
	struct net_device *oldnd;
	struct mlx4_ib_iboe *iboe;
	int port;

	if (!net_eq(dev_net(dev), &init_net))
		return NOTIFY_DONE;

	ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb);
	iboe = &ibdev->iboe;

	spin_lock(&iboe->lock);
	mlx4_foreach_ib_transport_port(port, ibdev->dev) {
		oldnd = iboe->netdevs[port - 1];
		iboe->netdevs[port - 1] =
1058
			mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port);
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		if (oldnd != iboe->netdevs[port - 1]) {
			if (iboe->netdevs[port - 1])
				netdev_added(ibdev, port);
			else
				netdev_removed(ibdev, port);
		}
	}

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	if (dev == iboe->netdevs[0] ||
	    (iboe->netdevs[0] && rdma_vlan_dev_real_dev(dev) == iboe->netdevs[0]))
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		handle_en_event(ibdev, 1, event);
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	else if (dev == iboe->netdevs[1]
		 || (iboe->netdevs[1] && rdma_vlan_dev_real_dev(dev) == iboe->netdevs[1]))
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		handle_en_event(ibdev, 2, event);

	spin_unlock(&iboe->lock);

	return NOTIFY_DONE;
}

1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158
static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
{
	char name[32];
	int eq_per_port = 0;
	int added_eqs = 0;
	int total_eqs = 0;
	int i, j, eq;

	/* Init eq table */
	ibdev->eq_table = NULL;
	ibdev->eq_added = 0;

	/* Legacy mode? */
	if (dev->caps.comp_pool == 0)
		return;

	eq_per_port = rounddown_pow_of_two(dev->caps.comp_pool/
					dev->caps.num_ports);

	/* Init eq table */
	added_eqs = 0;
	mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
		added_eqs += eq_per_port;

	total_eqs = dev->caps.num_comp_vectors + added_eqs;

	ibdev->eq_table = kzalloc(total_eqs * sizeof(int), GFP_KERNEL);
	if (!ibdev->eq_table)
		return;

	ibdev->eq_added = added_eqs;

	eq = 0;
	mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) {
		for (j = 0; j < eq_per_port; j++) {
			sprintf(name, "mlx4-ib-%d-%d@%s",
				i, j, dev->pdev->bus->name);
			/* Set IRQ for specific name (per ring) */
			if (mlx4_assign_eq(dev, name, &ibdev->eq_table[eq])) {
				/* Use legacy (same as mlx4_en driver) */
				pr_warn("Can't allocate EQ %d; reverting to legacy\n", eq);
				ibdev->eq_table[eq] =
					(eq % dev->caps.num_comp_vectors);
			}
			eq++;
		}
	}

	/* Fill the reset of the vector with legacy EQ */
	for (i = 0, eq = added_eqs; i < dev->caps.num_comp_vectors; i++)
		ibdev->eq_table[eq++] = i;

	/* Advertise the new number of EQs to clients */
	ibdev->ib_dev.num_comp_vectors = total_eqs;
}

static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
{
	int i;
	int total_eqs;

	/* Reset the advertised EQ number */
	ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors;

	/* Free only the added eqs */
	for (i = 0; i < ibdev->eq_added; i++) {
		/* Don't free legacy eqs if used */
		if (ibdev->eq_table[i] <= dev->caps.num_comp_vectors)
			continue;
		mlx4_release_eq(dev, ibdev->eq_table[i]);
	}

	total_eqs = dev->caps.num_comp_vectors + ibdev->eq_added;
	memset(ibdev->eq_table, 0, total_eqs * sizeof(int));
	kfree(ibdev->eq_table);

	ibdev->eq_table = NULL;
	ibdev->eq_added = 0;
}

1159 1160 1161
static void *mlx4_ib_add(struct mlx4_dev *dev)
{
	struct mlx4_ib_dev *ibdev;
1162
	int num_ports = 0;
1163
	int i, j;
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	int err;
	struct mlx4_ib_iboe *iboe;
1166

1167
	pr_info_once("%s", mlx4_ib_version);
1168

1169
	if (mlx4_is_mfunc(dev)) {
1170
		pr_warn("IB not yet supported in SRIOV\n");
1171 1172 1173
		return NULL;
	}

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	mlx4_foreach_ib_transport_port(i, dev)
1175 1176 1177 1178 1179 1180
		num_ports++;

	/* No point in registering a device with no ports... */
	if (num_ports == 0)
		return NULL;

1181 1182 1183 1184 1185 1186
	ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
	if (!ibdev) {
		dev_err(&dev->pdev->dev, "Device struct alloc failed\n");
		return NULL;
	}

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	iboe = &ibdev->iboe;

1189 1190 1191 1192 1193 1194
	if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
		goto err_dealloc;

	if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
		goto err_pd;

1195 1196
	ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT,
				 PAGE_SIZE);
1197 1198
	if (!ibdev->uar_map)
		goto err_uar;
1199
	MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
1200 1201 1202 1203 1204 1205

	ibdev->dev = dev;

	strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
	ibdev->ib_dev.owner		= THIS_MODULE;
	ibdev->ib_dev.node_type		= RDMA_NODE_IB_CA;
1206
	ibdev->ib_dev.local_dma_lkey	= dev->caps.reserved_lkey;
1207
	ibdev->num_ports		= num_ports;
1208
	ibdev->ib_dev.phys_port_cnt     = ibdev->num_ports;
1209
	ibdev->ib_dev.num_comp_vectors	= dev->caps.num_comp_vectors;
1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222
	ibdev->ib_dev.dma_device	= &dev->pdev->dev;

	ibdev->ib_dev.uverbs_abi_ver	= MLX4_IB_UVERBS_ABI_VERSION;
	ibdev->ib_dev.uverbs_cmd_mask	=
		(1ull << IB_USER_VERBS_CMD_GET_CONTEXT)		|
		(1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)	|
		(1ull << IB_USER_VERBS_CMD_QUERY_PORT)		|
		(1ull << IB_USER_VERBS_CMD_ALLOC_PD)		|
		(1ull << IB_USER_VERBS_CMD_DEALLOC_PD)		|
		(1ull << IB_USER_VERBS_CMD_REG_MR)		|
		(1ull << IB_USER_VERBS_CMD_DEREG_MR)		|
		(1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL)	|
		(1ull << IB_USER_VERBS_CMD_CREATE_CQ)		|
1223
		(1ull << IB_USER_VERBS_CMD_RESIZE_CQ)		|
1224 1225 1226
		(1ull << IB_USER_VERBS_CMD_DESTROY_CQ)		|
		(1ull << IB_USER_VERBS_CMD_CREATE_QP)		|
		(1ull << IB_USER_VERBS_CMD_MODIFY_QP)		|
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		(1ull << IB_USER_VERBS_CMD_QUERY_QP)		|
1228 1229 1230 1231 1232
		(1ull << IB_USER_VERBS_CMD_DESTROY_QP)		|
		(1ull << IB_USER_VERBS_CMD_ATTACH_MCAST)	|
		(1ull << IB_USER_VERBS_CMD_DETACH_MCAST)	|
		(1ull << IB_USER_VERBS_CMD_CREATE_SRQ)		|
		(1ull << IB_USER_VERBS_CMD_MODIFY_SRQ)		|
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		(1ull << IB_USER_VERBS_CMD_QUERY_SRQ)		|
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		(1ull << IB_USER_VERBS_CMD_DESTROY_SRQ)		|
1235 1236
		(1ull << IB_USER_VERBS_CMD_CREATE_XSRQ)		|
		(1ull << IB_USER_VERBS_CMD_OPEN_QP);
1237 1238 1239

	ibdev->ib_dev.query_device	= mlx4_ib_query_device;
	ibdev->ib_dev.query_port	= mlx4_ib_query_port;
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	ibdev->ib_dev.get_link_layer	= mlx4_ib_port_link_layer;
1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254
	ibdev->ib_dev.query_gid		= mlx4_ib_query_gid;
	ibdev->ib_dev.query_pkey	= mlx4_ib_query_pkey;
	ibdev->ib_dev.modify_device	= mlx4_ib_modify_device;
	ibdev->ib_dev.modify_port	= mlx4_ib_modify_port;
	ibdev->ib_dev.alloc_ucontext	= mlx4_ib_alloc_ucontext;
	ibdev->ib_dev.dealloc_ucontext	= mlx4_ib_dealloc_ucontext;
	ibdev->ib_dev.mmap		= mlx4_ib_mmap;
	ibdev->ib_dev.alloc_pd		= mlx4_ib_alloc_pd;
	ibdev->ib_dev.dealloc_pd	= mlx4_ib_dealloc_pd;
	ibdev->ib_dev.create_ah		= mlx4_ib_create_ah;
	ibdev->ib_dev.query_ah		= mlx4_ib_query_ah;
	ibdev->ib_dev.destroy_ah	= mlx4_ib_destroy_ah;
	ibdev->ib_dev.create_srq	= mlx4_ib_create_srq;
	ibdev->ib_dev.modify_srq	= mlx4_ib_modify_srq;
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	ibdev->ib_dev.query_srq		= mlx4_ib_query_srq;
1256 1257 1258 1259
	ibdev->ib_dev.destroy_srq	= mlx4_ib_destroy_srq;
	ibdev->ib_dev.post_srq_recv	= mlx4_ib_post_srq_recv;
	ibdev->ib_dev.create_qp		= mlx4_ib_create_qp;
	ibdev->ib_dev.modify_qp		= mlx4_ib_modify_qp;
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	ibdev->ib_dev.query_qp		= mlx4_ib_query_qp;
1261 1262 1263 1264
	ibdev->ib_dev.destroy_qp	= mlx4_ib_destroy_qp;
	ibdev->ib_dev.post_send		= mlx4_ib_post_send;
	ibdev->ib_dev.post_recv		= mlx4_ib_post_recv;
	ibdev->ib_dev.create_cq		= mlx4_ib_create_cq;
1265
	ibdev->ib_dev.modify_cq		= mlx4_ib_modify_cq;
1266
	ibdev->ib_dev.resize_cq		= mlx4_ib_resize_cq;
1267 1268 1269 1270 1271 1272
	ibdev->ib_dev.destroy_cq	= mlx4_ib_destroy_cq;
	ibdev->ib_dev.poll_cq		= mlx4_ib_poll_cq;
	ibdev->ib_dev.req_notify_cq	= mlx4_ib_arm_cq;
	ibdev->ib_dev.get_dma_mr	= mlx4_ib_get_dma_mr;
	ibdev->ib_dev.reg_user_mr	= mlx4_ib_reg_user_mr;
	ibdev->ib_dev.dereg_mr		= mlx4_ib_dereg_mr;
1273 1274 1275
	ibdev->ib_dev.alloc_fast_reg_mr = mlx4_ib_alloc_fast_reg_mr;
	ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list;
	ibdev->ib_dev.free_fast_reg_page_list  = mlx4_ib_free_fast_reg_page_list;
1276 1277 1278 1279
	ibdev->ib_dev.attach_mcast	= mlx4_ib_mcg_attach;
	ibdev->ib_dev.detach_mcast	= mlx4_ib_mcg_detach;
	ibdev->ib_dev.process_mad	= mlx4_ib_process_mad;

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1280 1281 1282 1283 1284
	ibdev->ib_dev.alloc_fmr		= mlx4_ib_fmr_alloc;
	ibdev->ib_dev.map_phys_fmr	= mlx4_ib_map_phys_fmr;
	ibdev->ib_dev.unmap_fmr		= mlx4_ib_unmap_fmr;
	ibdev->ib_dev.dealloc_fmr	= mlx4_ib_fmr_dealloc;

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	if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) {
		ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd;
		ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd;
		ibdev->ib_dev.uverbs_cmd_mask |=
			(1ull << IB_USER_VERBS_CMD_OPEN_XRCD) |
			(1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
	}

1293 1294
	mlx4_ib_alloc_eqs(dev, ibdev);

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	spin_lock_init(&iboe->lock);

1297 1298 1299
	if (init_node_data(ibdev))
		goto err_map;

1300 1301 1302 1303 1304 1305 1306 1307 1308 1309
	for (i = 0; i < ibdev->num_ports; ++i) {
		if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) ==
						IB_LINK_LAYER_ETHERNET) {
			err = mlx4_counter_alloc(ibdev->dev, &ibdev->counters[i]);
			if (err)
				ibdev->counters[i] = -1;
		} else
				ibdev->counters[i] = -1;
	}

1310 1311 1312
	spin_lock_init(&ibdev->sm_lock);
	mutex_init(&ibdev->cap_mask_mutex);

1313
	if (ib_register_device(&ibdev->ib_dev, NULL))
1314
		goto err_counter;
1315 1316 1317 1318

	if (mlx4_ib_mad_init(ibdev))
		goto err_reg;

E
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1319 1320 1321 1322 1323 1324 1325
	if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE && !iboe->nb.notifier_call) {
		iboe->nb.notifier_call = mlx4_ib_netdev_event;
		err = register_netdevice_notifier(&iboe->nb);
		if (err)
			goto err_reg;
	}

1326
	for (j = 0; j < ARRAY_SIZE(mlx4_class_attributes); ++j) {
1327
		if (device_create_file(&ibdev->ib_dev.dev,
1328
				       mlx4_class_attributes[j]))
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			goto err_notif;
1330 1331
	}

1332 1333
	ibdev->ib_active = true;

1334 1335
	return ibdev;

E
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1336 1337
err_notif:
	if (unregister_netdevice_notifier(&ibdev->iboe.nb))
1338
		pr_warn("failure unregistering notifier\n");
E
Eli Cohen 已提交
1339 1340
	flush_workqueue(wq);

1341 1342 1343
err_reg:
	ib_unregister_device(&ibdev->ib_dev);

1344 1345
err_counter:
	for (; i; --i)
1346 1347
		if (ibdev->counters[i - 1] != -1)
			mlx4_counter_free(ibdev->dev, ibdev->counters[i - 1]);
1348

1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368
err_map:
	iounmap(ibdev->uar_map);

err_uar:
	mlx4_uar_free(dev, &ibdev->priv_uar);

err_pd:
	mlx4_pd_free(dev, ibdev->priv_pdn);

err_dealloc:
	ib_dealloc_device(&ibdev->ib_dev);

	return NULL;
}

static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
{
	struct mlx4_ib_dev *ibdev = ibdev_ptr;
	int p;

1369 1370
	mlx4_ib_mad_cleanup(ibdev);
	ib_unregister_device(&ibdev->ib_dev);
E
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1371 1372
	if (ibdev->iboe.nb.notifier_call) {
		if (unregister_netdevice_notifier(&ibdev->iboe.nb))
1373
			pr_warn("failure unregistering notifier\n");
E
Eli Cohen 已提交
1374 1375 1376
		ibdev->iboe.nb.notifier_call = NULL;
	}
	iounmap(ibdev->uar_map);
1377
	for (p = 0; p < ibdev->num_ports; ++p)
1378 1379
		if (ibdev->counters[p] != -1)
			mlx4_counter_free(ibdev->dev, ibdev->counters[p]);
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1380
	mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB)
1381 1382
		mlx4_CLOSE_PORT(dev, p);

1383 1384
	mlx4_ib_free_eqs(dev, ibdev);

1385 1386 1387 1388 1389 1390
	mlx4_uar_free(dev, &ibdev->priv_uar);
	mlx4_pd_free(dev, ibdev->priv_pdn);
	ib_dealloc_device(&ibdev->ib_dev);
}

static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
1391
			  enum mlx4_dev_event event, int port)
1392 1393
{
	struct ib_event ibev;
1394 1395 1396 1397
	struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);

	if (port > ibdev->num_ports)
		return;
1398 1399

	switch (event) {
1400 1401
	case MLX4_DEV_EVENT_PORT_UP:
		ibev.event = IB_EVENT_PORT_ACTIVE;
1402 1403
		break;

1404 1405 1406 1407 1408
	case MLX4_DEV_EVENT_PORT_DOWN:
		ibev.event = IB_EVENT_PORT_ERR;
		break;

	case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
1409
		ibdev->ib_active = false;
1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423
		ibev.event = IB_EVENT_DEVICE_FATAL;
		break;

	default:
		return;
	}

	ibev.device	      = ibdev_ptr;
	ibev.element.port_num = port;

	ib_dispatch_event(&ibev);
}

static struct mlx4_interface mlx4_ib_interface = {
E
Eli Cohen 已提交
1424 1425 1426
	.add		= mlx4_ib_add,
	.remove		= mlx4_ib_remove,
	.event		= mlx4_ib_event,
1427
	.protocol	= MLX4_PROT_IB_IPV6
1428 1429 1430 1431
};

static int __init mlx4_ib_init(void)
{
E
Eli Cohen 已提交
1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444
	int err;

	wq = create_singlethread_workqueue("mlx4_ib");
	if (!wq)
		return -ENOMEM;

	err = mlx4_register_interface(&mlx4_ib_interface);
	if (err) {
		destroy_workqueue(wq);
		return err;
	}

	return 0;
1445 1446 1447 1448 1449
}

static void __exit mlx4_ib_cleanup(void)
{
	mlx4_unregister_interface(&mlx4_ib_interface);
E
Eli Cohen 已提交
1450
	destroy_workqueue(wq);
1451 1452 1453 1454
}

module_init(mlx4_ib_init);
module_exit(mlx4_ib_cleanup);