[linux-2.6-block.git] / drivers / infiniband / hw / mlx5 / mad.c

/*
 * Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved.
 *
 * 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/mlx5/cmd.h>
#include <linux/mlx5/vport.h>
#include <rdma/ib_mad.h>
#include <rdma/ib_smi.h>
#include <rdma/ib_pma.h>
#include "mlx5_ib.h"
#include "cmd.h"

enum {
	MLX5_IB_VENDOR_CLASS1 = 0x9,
	MLX5_IB_VENDOR_CLASS2 = 0xa
};

static bool can_do_mad_ifc(struct mlx5_ib_dev *dev, u8 port_num,
			   struct ib_mad *in_mad)
{
	if (in_mad->mad_hdr.mgmt_class != IB_MGMT_CLASS_SUBN_LID_ROUTED &&
	    in_mad->mad_hdr.mgmt_class != IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
		return true;
	return dev->mdev->port_caps[port_num - 1].has_smi;
}

static int mlx5_MAD_IFC(struct mlx5_ib_dev *dev, int ignore_mkey,
			int ignore_bkey, u8 port, const struct ib_wc *in_wc,
			const struct ib_grh *in_grh, const void *in_mad,
			void *response_mad)
{
	u8 op_modifier = 0;

	if (!can_do_mad_ifc(dev, port, (struct ib_mad *)in_mad))
		return -EPERM;

	/* Key check traps can't be generated unless we have in_wc to
	 * tell us where to send the trap.
	 */
	if (ignore_mkey || !in_wc)
		op_modifier |= 0x1;
	if (ignore_bkey || !in_wc)
		op_modifier |= 0x2;

	return mlx5_cmd_mad_ifc(dev->mdev, in_mad, response_mad, op_modifier,
				port);
}

static void pma_cnt_ext_assign(struct ib_pma_portcounters_ext *pma_cnt_ext,
			       void *out)
{
#define MLX5_SUM_CNT(p, cntr1, cntr2)	\
	(MLX5_GET64(query_vport_counter_out, p, cntr1) + \
	MLX5_GET64(query_vport_counter_out, p, cntr2))

	pma_cnt_ext->port_xmit_data =
		cpu_to_be64(MLX5_SUM_CNT(out, transmitted_ib_unicast.octets,
					 transmitted_ib_multicast.octets) >> 2);
	pma_cnt_ext->port_rcv_data =
		cpu_to_be64(MLX5_SUM_CNT(out, received_ib_unicast.octets,
					 received_ib_multicast.octets) >> 2);
	pma_cnt_ext->port_xmit_packets =
		cpu_to_be64(MLX5_SUM_CNT(out, transmitted_ib_unicast.packets,
					 transmitted_ib_multicast.packets));
	pma_cnt_ext->port_rcv_packets =
		cpu_to_be64(MLX5_SUM_CNT(out, received_ib_unicast.packets,
					 received_ib_multicast.packets));
	pma_cnt_ext->port_unicast_xmit_packets =
		MLX5_GET64_BE(query_vport_counter_out,
			      out, transmitted_ib_unicast.packets);
	pma_cnt_ext->port_unicast_rcv_packets =
		MLX5_GET64_BE(query_vport_counter_out,
			      out, received_ib_unicast.packets);
	pma_cnt_ext->port_multicast_xmit_packets =
		MLX5_GET64_BE(query_vport_counter_out,
			      out, transmitted_ib_multicast.packets);
	pma_cnt_ext->port_multicast_rcv_packets =
		MLX5_GET64_BE(query_vport_counter_out,
			      out, received_ib_multicast.packets);
}

static void pma_cnt_assign(struct ib_pma_portcounters *pma_cnt,
			   void *out)
{
	/* Traffic counters will be reported in
	 * their 64bit form via ib_pma_portcounters_ext by default.
	 */
	void *out_pma = MLX5_ADDR_OF(ppcnt_reg, out,
				     counter_set);

#define MLX5_ASSIGN_PMA_CNTR(counter_var, counter_name)	{		\
	counter_var = MLX5_GET_BE(typeof(counter_var),			\
				  ib_port_cntrs_grp_data_layout,	\
				  out_pma, counter_name);		\
	}

	MLX5_ASSIGN_PMA_CNTR(pma_cnt->symbol_error_counter,
			     symbol_error_counter);
	MLX5_ASSIGN_PMA_CNTR(pma_cnt->link_error_recovery_counter,
			     link_error_recovery_counter);
	MLX5_ASSIGN_PMA_CNTR(pma_cnt->link_downed_counter,
			     link_downed_counter);
	MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_errors,
			     port_rcv_errors);
	MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_remphys_errors,
			     port_rcv_remote_physical_errors);
	MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_switch_relay_errors,
			     port_rcv_switch_relay_errors);
	MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_xmit_discards,
			     port_xmit_discards);
	MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_xmit_constraint_errors,
			     port_xmit_constraint_errors);
	MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_xmit_wait,
			     port_xmit_wait);
	MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_constraint_errors,
			     port_rcv_constraint_errors);
	MLX5_ASSIGN_PMA_CNTR(pma_cnt->link_overrun_errors,
			     link_overrun_errors);
	MLX5_ASSIGN_PMA_CNTR(pma_cnt->vl15_dropped,
			     vl_15_dropped);
}

static int process_pma_cmd(struct mlx5_ib_dev *dev, u8 port_num,
			   const struct ib_mad *in_mad, struct ib_mad *out_mad)
{
	struct mlx5_core_dev *mdev;
	bool native_port = true;
	u8 mdev_port_num;
	void *out_cnt;
	int err;

	mdev = mlx5_ib_get_native_port_mdev(dev, port_num, &mdev_port_num);
	if (!mdev) {
		/* Fail to get the native port, likely due to 2nd port is still
		 * unaffiliated. In such case default to 1st port and attached
		 * PF device.
		 */
		native_port = false;
		mdev = dev->mdev;
		mdev_port_num = 1;
	}
	/* Declaring support of extended counters */
	if (in_mad->mad_hdr.attr_id == IB_PMA_CLASS_PORT_INFO) {
		struct ib_class_port_info cpi = {};

		cpi.capability_mask = IB_PMA_CLASS_CAP_EXT_WIDTH;
		memcpy((out_mad->data + 40), &cpi, sizeof(cpi));
		err = IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
		goto done;
	}

	if (in_mad->mad_hdr.attr_id == IB_PMA_PORT_COUNTERS_EXT) {
		struct ib_pma_portcounters_ext *pma_cnt_ext =
			(struct ib_pma_portcounters_ext *)(out_mad->data + 40);
		int sz = MLX5_ST_SZ_BYTES(query_vport_counter_out);

		out_cnt = kvzalloc(sz, GFP_KERNEL);
		if (!out_cnt) {
			err = IB_MAD_RESULT_FAILURE;
			goto done;
		}

		err = mlx5_core_query_vport_counter(mdev, 0, 0,
						    mdev_port_num, out_cnt, sz);
		if (!err)
			pma_cnt_ext_assign(pma_cnt_ext, out_cnt);
	} else {
		struct ib_pma_portcounters *pma_cnt =
			(struct ib_pma_portcounters *)(out_mad->data + 40);
		int sz = MLX5_ST_SZ_BYTES(ppcnt_reg);

		out_cnt = kvzalloc(sz, GFP_KERNEL);
		if (!out_cnt) {
			err = IB_MAD_RESULT_FAILURE;
			goto done;
		}

		err = mlx5_core_query_ib_ppcnt(mdev, mdev_port_num,
					       out_cnt, sz);
		if (!err)
			pma_cnt_assign(pma_cnt, out_cnt);
	}
	kvfree(out_cnt);
	err = err ? IB_MAD_RESULT_FAILURE :
		    IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
done:
	if (native_port)
		mlx5_ib_put_native_port_mdev(dev, port_num);
	return err;
}

int mlx5_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
			const struct ib_wc *in_wc, const struct ib_grh *in_grh,
			const struct ib_mad_hdr *in, size_t in_mad_size,
			struct ib_mad_hdr *out, size_t *out_mad_size,
			u16 *out_mad_pkey_index)
{
	struct mlx5_ib_dev *dev = to_mdev(ibdev);
	const struct ib_mad *in_mad = (const struct ib_mad *)in;
	struct ib_mad *out_mad = (struct ib_mad *)out;
	u8 mgmt_class = in_mad->mad_hdr.mgmt_class;
	u8 method = in_mad->mad_hdr.method;
	u16 slid;
	int err;

	slid = in_wc ? ib_lid_cpu16(in_wc->slid) :
		       be16_to_cpu(IB_LID_PERMISSIVE);

	if (method == IB_MGMT_METHOD_TRAP && !slid)
		return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;

	switch (mgmt_class) {
	case IB_MGMT_CLASS_SUBN_LID_ROUTED:
	case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE: {
		if (method != IB_MGMT_METHOD_GET &&
		    method != IB_MGMT_METHOD_SET &&
		    method != IB_MGMT_METHOD_TRAP_REPRESS)
			return IB_MAD_RESULT_SUCCESS;

		/* Don't process SMInfo queries -- the SMA can't handle them.
		 */
		if (in_mad->mad_hdr.attr_id == IB_SMP_ATTR_SM_INFO)
			return IB_MAD_RESULT_SUCCESS;
	} break;
	case IB_MGMT_CLASS_PERF_MGMT:
		if (MLX5_CAP_GEN(dev->mdev, vport_counters) &&
		    method == IB_MGMT_METHOD_GET)
			return process_pma_cmd(dev, port_num, in_mad, out_mad);
		/* fallthrough */
	case MLX5_IB_VENDOR_CLASS1:
		/* fallthrough */
	case MLX5_IB_VENDOR_CLASS2:
	case IB_MGMT_CLASS_CONG_MGMT: {
		if (method != IB_MGMT_METHOD_GET &&
		    method != IB_MGMT_METHOD_SET)
			return IB_MAD_RESULT_SUCCESS;
	} break;
	default:
		return IB_MAD_RESULT_SUCCESS;
	}

	err = mlx5_MAD_IFC(to_mdev(ibdev),
			   mad_flags & IB_MAD_IGNORE_MKEY,
			   mad_flags & IB_MAD_IGNORE_BKEY,
			   port_num, in_wc, in_grh, in_mad, out_mad);
	if (err)
		return IB_MAD_RESULT_FAILURE;

	/* set return bit in status of directed route responses */
	if (mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
		out_mad->mad_hdr.status |= cpu_to_be16(1 << 15);

	if (method == IB_MGMT_METHOD_TRAP_REPRESS)
		/* no response for trap repress */
		return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;

	return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
}

int mlx5_query_ext_port_caps(struct mlx5_ib_dev *dev, u8 port)
{
	struct ib_smp *in_mad  = NULL;
	struct ib_smp *out_mad = NULL;
	int err = -ENOMEM;
	u16 packet_error;

	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 = MLX5_ATTR_EXTENDED_PORT_INFO;
	in_mad->attr_mod = cpu_to_be32(port);

	err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);

	packet_error = be16_to_cpu(out_mad->status);

	dev->mdev->port_caps[port - 1].ext_port_cap = (!err && !packet_error) ?
		MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO : 0;

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

int mlx5_query_mad_ifc_smp_attr_node_info(struct ib_device *ibdev,
					  struct ib_smp *out_mad)
{
	struct ib_smp *in_mad = NULL;
	int err = -ENOMEM;

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

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

	err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad,
			   out_mad);

	kfree(in_mad);
	return err;
}

int mlx5_query_mad_ifc_system_image_guid(struct ib_device *ibdev,
					 __be64 *sys_image_guid)
{
	struct ib_smp *out_mad = NULL;
	int err = -ENOMEM;

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

	err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad);
	if (err)
		goto out;

	memcpy(sys_image_guid, out_mad->data + 4, 8);

out:
	kfree(out_mad);

	return err;
}

int mlx5_query_mad_ifc_max_pkeys(struct ib_device *ibdev,
				 u16 *max_pkeys)
{
	struct ib_smp *out_mad = NULL;
	int err = -ENOMEM;

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

	err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad);
	if (err)
		goto out;

	*max_pkeys = be16_to_cpup((__be16 *)(out_mad->data + 28));

out:
	kfree(out_mad);

	return err;
}

int mlx5_query_mad_ifc_vendor_id(struct ib_device *ibdev,
				 u32 *vendor_id)
{
	struct ib_smp *out_mad = NULL;
	int err = -ENOMEM;

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

	err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad);
	if (err)
		goto out;

	*vendor_id = be32_to_cpup((__be32 *)(out_mad->data + 36)) & 0xffff;

out:
	kfree(out_mad);

	return err;
}

int mlx5_query_mad_ifc_node_desc(struct mlx5_ib_dev *dev, char *node_desc)
{
	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 = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
	if (err)
		goto out;

	memcpy(node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX);
out:
	kfree(in_mad);
	kfree(out_mad);
	return err;
}

int mlx5_query_mad_ifc_node_guid(struct mlx5_ib_dev *dev, __be64 *node_guid)
{
	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 = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
	if (err)
		goto out;

	memcpy(node_guid, out_mad->data + 12, 8);
out:
	kfree(in_mad);
	kfree(out_mad);
	return err;
}

int mlx5_query_mad_ifc_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 = mlx5_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;
}

int mlx5_query_mad_ifc_gids(struct ib_device *ibdev, u8 port, int index,
			    union ib_gid *gid)
{
	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 = mlx5_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 = mlx5_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;
}

int mlx5_query_mad_ifc_port(struct ib_device *ibdev, u8 port,
			    struct ib_port_attr *props)
{
	struct mlx5_ib_dev *dev = to_mdev(ibdev);
	struct mlx5_core_dev *mdev = dev->mdev;
	struct ib_smp *in_mad  = NULL;
	struct ib_smp *out_mad = NULL;
	int ext_active_speed;
	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;

	/* props being zeroed by the caller, avoid zeroing it here */

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

	err = mlx5_MAD_IFC(dev, 1, 1, port, NULL, NULL, in_mad, out_mad);
	if (err) {
		mlx5_ib_warn(dev, "err %d\n", err);
		goto out;
	}

	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));
	props->gid_tbl_len	= out_mad->data[50];
	props->max_msg_sz	= 1 << MLX5_CAP_GEN(mdev, log_max_msg);
	props->pkey_tbl_len	= mdev->port_caps[port - 1].pkey_table_len;
	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;

	if (props->port_cap_flags & IB_PORT_CAP_MASK2_SUP) {
		props->port_cap_flags2 =
			be16_to_cpup((__be16 *)(out_mad->data + 60));

		if (props->port_cap_flags2 & IB_PORT_LINK_WIDTH_2X_SUP)
			props->active_width = out_mad->data[31] & 0x1f;
	}

	/* 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:
			props->active_speed = 16; /* FDR */
			break;
		case 2:
			props->active_speed = 32; /* EDR */
			break;
		case 4:
			if (props->port_cap_flags & IB_PORT_CAP_MASK2_SUP &&
			    props->port_cap_flags2 & IB_PORT_LINK_SPEED_HDR_SUP)
				props->active_speed = IB_SPEED_HDR;
			break;
		}
	}

	/* If reported active speed is QDR, check if is FDR-10 */
	if (props->active_speed == 4) {
		if (mdev->port_caps[port - 1].ext_port_cap &
		    MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO) {
			init_query_mad(in_mad);
			in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO;
			in_mad->attr_mod = cpu_to_be32(port);

			err = mlx5_MAD_IFC(dev, 1, 1, port,
					   NULL, NULL, in_mad, out_mad);
			if (err)
				goto out;

			/* Checking LinkSpeedActive for FDR-10 */
			if (out_mad->data[15] & 0x1)
				props->active_speed = 8;
		}
	}

out:
	kfree(in_mad);
	kfree(out_mad);

	return err;
}
Commit	Line	Data
e126ba97	1	/*
6cf0a15f	2	* Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved.
e126ba97 EC	3	*
	4	* This software is available to you under a choice of one of two
	5	* licenses. You may choose to be licensed under the terms of the GNU
	6	* General Public License (GPL) Version 2, available from the file
	7	* COPYING in the main directory of this source tree, or the
	8	* OpenIB.org BSD license below:
	9	*
	10	* Redistribution and use in source and binary forms, with or
	11	* without modification, are permitted provided that the following
	12	* conditions are met:
	13	*
	14	* - Redistributions of source code must retain the above
	15	* copyright notice, this list of conditions and the following
	16	* disclaimer.
	17	*
	18	* - Redistributions in binary form must reproduce the above
	19	* copyright notice, this list of conditions and the following
	20	* disclaimer in the documentation and/or other materials
	21	* provided with the distribution.
	22	*
	23	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	24	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	25	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	26	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	27	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	28	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	29	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	30	* SOFTWARE.
	31	*/
	32
	33	#include <linux/mlx5/cmd.h>
3efd9a11	34	#include <linux/mlx5/vport.h>
e126ba97 EC	35	#include <rdma/ib_mad.h>
e126ba97 EC	36	#include <rdma/ib_smi.h>
3efd9a11	37	#include <rdma/ib_pma.h>
e126ba97	38	#include "mlx5_ib.h"
73f5a82b	39	#include "cmd.h"
e126ba97 EC	40
	41	enum {
	42	MLX5_IB_VENDOR_CLASS1 = 0x9,
	43	MLX5_IB_VENDOR_CLASS2 = 0xa
	44	};
	45
c43f1112 MG	46	static bool can_do_mad_ifc(struct mlx5_ib_dev *dev, u8 port_num,
	47	struct ib_mad *in_mad)
	48	{
	49	if (in_mad->mad_hdr.mgmt_class != IB_MGMT_CLASS_SUBN_LID_ROUTED &&
	50	in_mad->mad_hdr.mgmt_class != IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
	51	return true;
	52	return dev->mdev->port_caps[port_num - 1].has_smi;
	53	}
	54
73f5a82b LR	55	static int mlx5_MAD_IFC(struct mlx5_ib_dev *dev, int ignore_mkey,
	56	int ignore_bkey, u8 port, const struct ib_wc *in_wc,
	57	const struct ib_grh in_grh, const void in_mad,
	58	void *response_mad)
e126ba97 EC	59	{
	60	u8 op_modifier = 0;
	61
c43f1112 MG	62	if (!can_do_mad_ifc(dev, port, (struct ib_mad *)in_mad))
	63	return -EPERM;
	64
e126ba97 EC	65	/* Key check traps can't be generated unless we have in_wc to
	66	* tell us where to send the trap.
	67	*/
	68	if (ignore_mkey \|\| !in_wc)
	69	op_modifier \|= 0x1;
	70	if (ignore_bkey \|\| !in_wc)
	71	op_modifier \|= 0x2;
	72
73f5a82b LR	73	return mlx5_cmd_mad_ifc(dev->mdev, in_mad, response_mad, op_modifier,
73f5a82b LR	74	port);
e126ba97 EC	75	}
e126ba97 EC	76
3efd9a11 MY	77	static void pma_cnt_ext_assign(struct ib_pma_portcounters_ext *pma_cnt_ext,
	78	void *out)
	79	{
	80	#define MLX5_SUM_CNT(p, cntr1, cntr2) \
	81	(MLX5_GET64(query_vport_counter_out, p, cntr1) + \
	82	MLX5_GET64(query_vport_counter_out, p, cntr2))
	83
	84	pma_cnt_ext->port_xmit_data =
	85	cpu_to_be64(MLX5_SUM_CNT(out, transmitted_ib_unicast.octets,
	86	transmitted_ib_multicast.octets) >> 2);
00bf534f	87	pma_cnt_ext->port_rcv_data =
3efd9a11 MY	88	cpu_to_be64(MLX5_SUM_CNT(out, received_ib_unicast.octets,
	89	received_ib_multicast.octets) >> 2);
	90	pma_cnt_ext->port_xmit_packets =
	91	cpu_to_be64(MLX5_SUM_CNT(out, transmitted_ib_unicast.packets,
	92	transmitted_ib_multicast.packets));
	93	pma_cnt_ext->port_rcv_packets =
	94	cpu_to_be64(MLX5_SUM_CNT(out, received_ib_unicast.packets,
	95	received_ib_multicast.packets));
	96	pma_cnt_ext->port_unicast_xmit_packets =
	97	MLX5_GET64_BE(query_vport_counter_out,
	98	out, transmitted_ib_unicast.packets);
	99	pma_cnt_ext->port_unicast_rcv_packets =
	100	MLX5_GET64_BE(query_vport_counter_out,
	101	out, received_ib_unicast.packets);
	102	pma_cnt_ext->port_multicast_xmit_packets =
	103	MLX5_GET64_BE(query_vport_counter_out,
	104	out, transmitted_ib_multicast.packets);
	105	pma_cnt_ext->port_multicast_rcv_packets =
	106	MLX5_GET64_BE(query_vport_counter_out,
	107	out, received_ib_multicast.packets);
	108	}
	109
	110	static void pma_cnt_assign(struct ib_pma_portcounters *pma_cnt,
	111	void *out)
	112	{
	113	/* Traffic counters will be reported in
	114	* their 64bit form via ib_pma_portcounters_ext by default.
	115	*/
	116	void *out_pma = MLX5_ADDR_OF(ppcnt_reg, out,
	117	counter_set);
	118
	119	#define MLX5_ASSIGN_PMA_CNTR(counter_var, counter_name) { \
	120	counter_var = MLX5_GET_BE(typeof(counter_var), \
	121	ib_port_cntrs_grp_data_layout, \
	122	out_pma, counter_name); \
	123	}
	124
	125	MLX5_ASSIGN_PMA_CNTR(pma_cnt->symbol_error_counter,
	126	symbol_error_counter);
	127	MLX5_ASSIGN_PMA_CNTR(pma_cnt->link_error_recovery_counter,
	128	link_error_recovery_counter);
	129	MLX5_ASSIGN_PMA_CNTR(pma_cnt->link_downed_counter,
	130	link_downed_counter);
	131	MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_errors,
	132	port_rcv_errors);
	133	MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_remphys_errors,
	134	port_rcv_remote_physical_errors);
	135	MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_switch_relay_errors,
	136	port_rcv_switch_relay_errors);
	137	MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_xmit_discards,
	138	port_xmit_discards);
	139	MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_xmit_constraint_errors,
	140	port_xmit_constraint_errors);
133bea04 TW	141	MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_xmit_wait,
133bea04 TW	142	port_xmit_wait);
3efd9a11 MY	143	MLX5_ASSIGN_PMA_CNTR(pma_cnt->port_rcv_constraint_errors,
	144	port_rcv_constraint_errors);
	145	MLX5_ASSIGN_PMA_CNTR(pma_cnt->link_overrun_errors,
	146	link_overrun_errors);
	147	MLX5_ASSIGN_PMA_CNTR(pma_cnt->vl15_dropped,
	148	vl_15_dropped);
	149	}
	150
2f40cf30	151	static int process_pma_cmd(struct mlx5_ib_dev *dev, u8 port_num,
3efd9a11 MY	152	const struct ib_mad in_mad, struct ib_mad out_mad)
3efd9a11 MY	153	{
2f40cf30 PP	154	struct mlx5_core_dev *mdev;
	155	bool native_port = true;
	156	u8 mdev_port_num;
3efd9a11	157	void *out_cnt;
2f40cf30	158	int err;
3efd9a11	159
2f40cf30 PP	160	mdev = mlx5_ib_get_native_port_mdev(dev, port_num, &mdev_port_num);
	161	if (!mdev) {
	162	/* Fail to get the native port, likely due to 2nd port is still
	163	* unaffiliated. In such case default to 1st port and attached
	164	* PF device.
	165	*/
	166	native_port = false;
	167	mdev = dev->mdev;
	168	mdev_port_num = 1;
	169	}
4edf8d5c	170	/* Declaring support of extended counters */
3efd9a11 MY	171	if (in_mad->mad_hdr.attr_id == IB_PMA_CLASS_PORT_INFO) {
	172	struct ib_class_port_info cpi = {};
	173
	174	cpi.capability_mask = IB_PMA_CLASS_CAP_EXT_WIDTH;
	175	memcpy((out_mad->data + 40), &cpi, sizeof(cpi));
2f40cf30 PP	176	err = IB_MAD_RESULT_SUCCESS \| IB_MAD_RESULT_REPLY;
2f40cf30 PP	177	goto done;
3efd9a11 MY	178	}
	179
	180	if (in_mad->mad_hdr.attr_id == IB_PMA_PORT_COUNTERS_EXT) {
	181	struct ib_pma_portcounters_ext *pma_cnt_ext =
	182	(struct ib_pma_portcounters_ext *)(out_mad->data + 40);
	183	int sz = MLX5_ST_SZ_BYTES(query_vport_counter_out);
	184
1b9a07ee	185	out_cnt = kvzalloc(sz, GFP_KERNEL);
2f40cf30 PP	186	if (!out_cnt) {
	187	err = IB_MAD_RESULT_FAILURE;
	188	goto done;
	189	}
3efd9a11	190
212f2a87	191	err = mlx5_core_query_vport_counter(mdev, 0, 0,
2f40cf30	192	mdev_port_num, out_cnt, sz);
3efd9a11 MY	193	if (!err)
	194	pma_cnt_ext_assign(pma_cnt_ext, out_cnt);
	195	} else {
	196	struct ib_pma_portcounters *pma_cnt =
	197	(struct ib_pma_portcounters *)(out_mad->data + 40);
	198	int sz = MLX5_ST_SZ_BYTES(ppcnt_reg);
	199
1b9a07ee	200	out_cnt = kvzalloc(sz, GFP_KERNEL);
2f40cf30 PP	201	if (!out_cnt) {
	202	err = IB_MAD_RESULT_FAILURE;
	203	goto done;
	204	}
3efd9a11	205
2f40cf30	206	err = mlx5_core_query_ib_ppcnt(mdev, mdev_port_num,
3efd9a11 MY	207	out_cnt, sz);
	208	if (!err)
	209	pma_cnt_assign(pma_cnt, out_cnt);
2f40cf30	210	}
3efd9a11	211	kvfree(out_cnt);
2f40cf30 PP	212	err = err ? IB_MAD_RESULT_FAILURE :
	213	IB_MAD_RESULT_SUCCESS \| IB_MAD_RESULT_REPLY;
	214	done:
	215	if (native_port)
	216	mlx5_ib_put_native_port_mdev(dev, port_num);
	217	return err;
3efd9a11 MY	218	}
	219
	220	int mlx5_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
	221	const struct ib_wc in_wc, const struct ib_grh in_grh,
	222	const struct ib_mad_hdr *in, size_t in_mad_size,
	223	struct ib_mad_hdr out, size_t out_mad_size,
	224	u16 *out_mad_pkey_index)
	225	{
	226	struct mlx5_ib_dev *dev = to_mdev(ibdev);
3efd9a11 MY	227	const struct ib_mad in_mad = (const struct ib_mad )in;
3efd9a11 MY	228	struct ib_mad out_mad = (struct ib_mad )out;
ffa2fd13 LR	229	u8 mgmt_class = in_mad->mad_hdr.mgmt_class;
	230	u8 method = in_mad->mad_hdr.method;
	231	u16 slid;
	232	int err;
3efd9a11	233
ffa2fd13 LR	234	slid = in_wc ? ib_lid_cpu16(in_wc->slid) :
	235	be16_to_cpu(IB_LID_PERMISSIVE);
	236
	237	if (method == IB_MGMT_METHOD_TRAP && !slid)
	238	return IB_MAD_RESULT_SUCCESS \| IB_MAD_RESULT_CONSUMED;
	239
	240	switch (mgmt_class) {
	241	case IB_MGMT_CLASS_SUBN_LID_ROUTED:
	242	case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE: {
	243	if (method != IB_MGMT_METHOD_GET &&
	244	method != IB_MGMT_METHOD_SET &&
	245	method != IB_MGMT_METHOD_TRAP_REPRESS)
	246	return IB_MAD_RESULT_SUCCESS;
	247
	248	/* Don't process SMInfo queries -- the SMA can't handle them.
	249	*/
	250	if (in_mad->mad_hdr.attr_id == IB_SMP_ATTR_SM_INFO)
	251	return IB_MAD_RESULT_SUCCESS;
	252	} break;
	253	case IB_MGMT_CLASS_PERF_MGMT:
	254	if (MLX5_CAP_GEN(dev->mdev, vport_counters) &&
	255	method == IB_MGMT_METHOD_GET)
	256	return process_pma_cmd(dev, port_num, in_mad, out_mad);
	257	/* fallthrough */
	258	case MLX5_IB_VENDOR_CLASS1:
	259	/* fallthrough */
	260	case MLX5_IB_VENDOR_CLASS2:
	261	case IB_MGMT_CLASS_CONG_MGMT: {
	262	if (method != IB_MGMT_METHOD_GET &&
	263	method != IB_MGMT_METHOD_SET)
	264	return IB_MAD_RESULT_SUCCESS;
	265	} break;
	266	default:
	267	return IB_MAD_RESULT_SUCCESS;
3efd9a11	268	}
ffa2fd13 LR	269
	270	err = mlx5_MAD_IFC(to_mdev(ibdev),
	271	mad_flags & IB_MAD_IGNORE_MKEY,
	272	mad_flags & IB_MAD_IGNORE_BKEY,
	273	port_num, in_wc, in_grh, in_mad, out_mad);
	274	if (err)
	275	return IB_MAD_RESULT_FAILURE;
	276
	277	/* set return bit in status of directed route responses */
	278	if (mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
	279	out_mad->mad_hdr.status \|= cpu_to_be16(1 << 15);
	280
	281	if (method == IB_MGMT_METHOD_TRAP_REPRESS)
	282	/* no response for trap repress */
	283	return IB_MAD_RESULT_SUCCESS \| IB_MAD_RESULT_CONSUMED;
	284
	285	return IB_MAD_RESULT_SUCCESS \| IB_MAD_RESULT_REPLY;
3efd9a11 MY	286	}
3efd9a11 MY	287
e126ba97 EC	288	int mlx5_query_ext_port_caps(struct mlx5_ib_dev *dev, u8 port)
	289	{
	290	struct ib_smp *in_mad = NULL;
	291	struct ib_smp *out_mad = NULL;
	292	int err = -ENOMEM;
	293	u16 packet_error;
	294
	295	in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
	296	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
	297	if (!in_mad \|\| !out_mad)
	298	goto out;
	299
	300	init_query_mad(in_mad);
	301	in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO;
	302	in_mad->attr_mod = cpu_to_be32(port);
	303
	304	err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
	305
	306	packet_error = be16_to_cpu(out_mad->status);
	307
938fe83c	308	dev->mdev->port_caps[port - 1].ext_port_cap = (!err && !packet_error) ?
e126ba97 EC	309	MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO : 0;
	310
	311	out:
	312	kfree(in_mad);
	313	kfree(out_mad);
	314	return err;
	315	}
1b5daf11 MD	316
	317	int mlx5_query_mad_ifc_smp_attr_node_info(struct ib_device *ibdev,
	318	struct ib_smp *out_mad)
	319	{
	320	struct ib_smp *in_mad = NULL;
	321	int err = -ENOMEM;
	322
	323	in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
	324	if (!in_mad)
	325	return -ENOMEM;
	326
	327	init_query_mad(in_mad);
	328	in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
	329
	330	err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad,
	331	out_mad);
	332
	333	kfree(in_mad);
	334	return err;
	335	}
	336
	337	int mlx5_query_mad_ifc_system_image_guid(struct ib_device *ibdev,
	338	__be64 *sys_image_guid)
	339	{
	340	struct ib_smp *out_mad = NULL;
	341	int err = -ENOMEM;
	342
	343	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
	344	if (!out_mad)
	345	return -ENOMEM;
	346
	347	err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad);
	348	if (err)
	349	goto out;
	350
	351	memcpy(sys_image_guid, out_mad->data + 4, 8);
	352
	353	out:
	354	kfree(out_mad);
	355
	356	return err;
	357	}
	358
	359	int mlx5_query_mad_ifc_max_pkeys(struct ib_device *ibdev,
	360	u16 *max_pkeys)
	361	{
	362	struct ib_smp *out_mad = NULL;
	363	int err = -ENOMEM;
	364
	365	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
	366	if (!out_mad)
	367	return -ENOMEM;
	368
	369	err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad);
	370	if (err)
	371	goto out;
	372
	373	max_pkeys = be16_to_cpup((__be16 )(out_mad->data + 28));
	374
	375	out:
	376	kfree(out_mad);
	377
	378	return err;
	379	}
380
381	int mlx5_query_mad_ifc_vendor_id(struct ib_device *ibdev,
382	u32 *vendor_id)
383	{
384	struct ib_smp *out_mad = NULL;
385	int err = -ENOMEM;
386
387	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
388	if (!out_mad)
389	return -ENOMEM;
390
391	err = mlx5_query_mad_ifc_smp_attr_node_info(ibdev, out_mad);
392	if (err)
393	goto out;
394
395	vendor_id = be32_to_cpup((__be32 )(out_mad->data + 36)) & 0xffff;
396
397	out:
398	kfree(out_mad);
399
400	return err;
401	}
402
403	int mlx5_query_mad_ifc_node_desc(struct mlx5_ib_dev dev, char node_desc)
404	{
405	struct ib_smp *in_mad = NULL;
406	struct ib_smp *out_mad = NULL;
407	int err = -ENOMEM;
408
409	in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
410	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
411	if (!in_mad \|\| !out_mad)
412	goto out;
413
414	init_query_mad(in_mad);
415	in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
416
417	err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
418	if (err)
419	goto out;
420
bd99fdea	421	memcpy(node_desc, out_mad->data, IB_DEVICE_NODE_DESC_MAX);
1b5daf11 MD	422	out:
	423	kfree(in_mad);
	424	kfree(out_mad);
	425	return err;
	426	}
	427
	428	int mlx5_query_mad_ifc_node_guid(struct mlx5_ib_dev dev, __be64 node_guid)
	429	{
	430	struct ib_smp *in_mad = NULL;
	431	struct ib_smp *out_mad = NULL;
	432	int err = -ENOMEM;
	433
	434	in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
	435	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
	436	if (!in_mad \|\| !out_mad)
	437	goto out;
	438
	439	init_query_mad(in_mad);
	440	in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
	441
	442	err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
	443	if (err)
	444	goto out;
	445
	446	memcpy(node_guid, out_mad->data + 12, 8);
	447	out:
	448	kfree(in_mad);
	449	kfree(out_mad);
	450	return err;
	451	}
	452
	453	int mlx5_query_mad_ifc_pkey(struct ib_device *ibdev, u8 port, u16 index,
	454	u16 *pkey)
	455	{
	456	struct ib_smp *in_mad = NULL;
	457	struct ib_smp *out_mad = NULL;
	458	int err = -ENOMEM;
	459
	460	in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
	461	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
	462	if (!in_mad \|\| !out_mad)
	463	goto out;
	464
	465	init_query_mad(in_mad);
	466	in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE;
	467	in_mad->attr_mod = cpu_to_be32(index / 32);
	468
	469	err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad,
	470	out_mad);
	471	if (err)
	472	goto out;
	473
	474	pkey = be16_to_cpu(((__be16 )out_mad->data)[index % 32]);
	475
	476	out:
	477	kfree(in_mad);
	478	kfree(out_mad);
	479	return err;
	480	}
	481
	482	int mlx5_query_mad_ifc_gids(struct ib_device *ibdev, u8 port, int index,
	483	union ib_gid *gid)
	484	{
	485	struct ib_smp *in_mad = NULL;
486	struct ib_smp *out_mad = NULL;
487	int err = -ENOMEM;
488
489	in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
490	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
491	if (!in_mad \|\| !out_mad)
492	goto out;
493
494	init_query_mad(in_mad);
495	in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
496	in_mad->attr_mod = cpu_to_be32(port);
497
498	err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad,
499	out_mad);
500	if (err)
501	goto out;
502
503	memcpy(gid->raw, out_mad->data + 8, 8);
504
505	init_query_mad(in_mad);
506	in_mad->attr_id = IB_SMP_ATTR_GUID_INFO;
507	in_mad->attr_mod = cpu_to_be32(index / 8);
508
509	err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad,
510	out_mad);
511	if (err)
512	goto out;
513
514	memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
515
516	out:
517	kfree(in_mad);
518	kfree(out_mad);
519	return err;
520	}
521
522	int mlx5_query_mad_ifc_port(struct ib_device *ibdev, u8 port,
523	struct ib_port_attr *props)
524	{
525	struct mlx5_ib_dev *dev = to_mdev(ibdev);
526	struct mlx5_core_dev *mdev = dev->mdev;
527	struct ib_smp *in_mad = NULL;
528	struct ib_smp *out_mad = NULL;
529	int ext_active_speed;
530	int err = -ENOMEM;
531
1b5daf11 MD	532	in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
	533	out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
	534	if (!in_mad \|\| !out_mad)
	535	goto out;
	536
c4550c63	537	/* props being zeroed by the caller, avoid zeroing it here */
1b5daf11 MD	538
	539	init_query_mad(in_mad);
	540	in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
	541	in_mad->attr_mod = cpu_to_be32(port);
	542
	543	err = mlx5_MAD_IFC(dev, 1, 1, port, NULL, NULL, in_mad, out_mad);
	544	if (err) {
	545	mlx5_ib_warn(dev, "err %d\n", err);
	546	goto out;
	547	}
	548
	549	props->lid = be16_to_cpup((__be16 *)(out_mad->data + 16));
	550	props->lmc = out_mad->data[34] & 0x7;
	551	props->sm_lid = be16_to_cpup((__be16 *)(out_mad->data + 18));
	552	props->sm_sl = out_mad->data[36] & 0xf;
	553	props->state = out_mad->data[32] & 0xf;
	554	props->phys_state = out_mad->data[33] >> 4;
	555	props->port_cap_flags = be32_to_cpup((__be32 *)(out_mad->data + 20));
	556	props->gid_tbl_len = out_mad->data[50];
	557	props->max_msg_sz = 1 << MLX5_CAP_GEN(mdev, log_max_msg);
	558	props->pkey_tbl_len = mdev->port_caps[port - 1].pkey_table_len;
	559	props->bad_pkey_cntr = be16_to_cpup((__be16 *)(out_mad->data + 46));
	560	props->qkey_viol_cntr = be16_to_cpup((__be16 *)(out_mad->data + 48));
	561	props->active_width = out_mad->data[31] & 0xf;
	562	props->active_speed = out_mad->data[35] >> 4;
	563	props->max_mtu = out_mad->data[41] & 0xf;
	564	props->active_mtu = out_mad->data[36] >> 4;
	565	props->subnet_timeout = out_mad->data[51] & 0x1f;
	566	props->max_vl_num = out_mad->data[37] >> 4;
	567	props->init_type_reply = out_mad->data[41] >> 4;
	568
d764970b	569	if (props->port_cap_flags & IB_PORT_CAP_MASK2_SUP) {
4106a758 MG	570	props->port_cap_flags2 =
	571	be16_to_cpup((__be16 *)(out_mad->data + 60));
	572
d764970b MG	573	if (props->port_cap_flags2 & IB_PORT_LINK_WIDTH_2X_SUP)
	574	props->active_width = out_mad->data[31] & 0x1f;
	575	}
	576
1b5daf11 MD	577	/* Check if extended speeds (EDR/FDR/...) are supported */
	578	if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
	579	ext_active_speed = out_mad->data[62] >> 4;
	580
	581	switch (ext_active_speed) {
	582	case 1:
	583	props->active_speed = 16; /* FDR */
	584	break;
	585	case 2:
	586	props->active_speed = 32; /* EDR */
	587	break;
b874155a MG	588	case 4:
	589	if (props->port_cap_flags & IB_PORT_CAP_MASK2_SUP &&
	590	props->port_cap_flags2 & IB_PORT_LINK_SPEED_HDR_SUP)
	591	props->active_speed = IB_SPEED_HDR;
	592	break;
1b5daf11 MD	593	}
	594	}
	595
	596	/* If reported active speed is QDR, check if is FDR-10 */
	597	if (props->active_speed == 4) {
	598	if (mdev->port_caps[port - 1].ext_port_cap &
	599	MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO) {
	600	init_query_mad(in_mad);
	601	in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO;
	602	in_mad->attr_mod = cpu_to_be32(port);
	603
	604	err = mlx5_MAD_IFC(dev, 1, 1, port,
	605	NULL, NULL, in_mad, out_mad);
	606	if (err)
	607	goto out;
	608
	609	/* Checking LinkSpeedActive for FDR-10 */
	610	if (out_mad->data[15] & 0x1)
	611	props->active_speed = 8;
	612	}
	613	}
	614
	615	out:
	616	kfree(in_mad);
	617	kfree(out_mad);
	618
	619	return err;
	620	}