/*
 * Copyright (c) 2004, 2005 Topspin Communications.  All rights reserved.
 * Copyright (c) 2005, 2006, 2007, 2008 Mellanox Technologies. All rights reserved.
 * Copyright (c) 2005, 2006, 2007 Cisco Systems, Inc.  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/etherdevice.h>
#include <linux/mlx4/cmd.h>
#include <linux/module.h>
#include <linux/cache.h>
#include <linux/kernel.h>
#include <uapi/rdma/mlx4-abi.h>

#include "fw.h"
#include "icm.h"

enum {
        MLX4_COMMAND_INTERFACE_MIN_REV          = 2,
        MLX4_COMMAND_INTERFACE_MAX_REV          = 3,
        MLX4_COMMAND_INTERFACE_NEW_PORT_CMDS    = 3,
};

extern void __buggy_use_of_MLX4_GET(void);
extern void __buggy_use_of_MLX4_PUT(void);

static bool enable_qos;
module_param(enable_qos, bool, 0444);
MODULE_PARM_DESC(enable_qos, "Enable Enhanced QoS support (default: off)");

#define MLX4_GET(dest, source, offset)                                \
        do {                                                          \
                void *__p = (char *) (source) + (offset);             \
                __be64 val;                                           \
                switch (sizeof(dest)) {                               \
                case 1: (dest) = *(u8 *) __p;       break;            \
                case 2: (dest) = be16_to_cpup(__p); break;            \
                case 4: (dest) = be32_to_cpup(__p); break;            \
                case 8: val = get_unaligned((__be64 *)__p);           \
                        (dest) = be64_to_cpu(val);  break;            \
                default: __buggy_use_of_MLX4_GET();                   \
                }                                                     \
        } while (0)

#define MLX4_PUT(dest, source, offset)                                \
        do {                                                          \
                void *__d = ((char *) (dest) + (offset));             \
                switch (sizeof(source)) {                             \
                case 1: *(u8 *) __d = (source);                break; \
                case 2: *(__be16 *) __d = cpu_to_be16(source); break; \
                case 4: *(__be32 *) __d = cpu_to_be32(source); break; \
                case 8: *(__be64 *) __d = cpu_to_be64(source); break; \
                default: __buggy_use_of_MLX4_PUT();                   \
                }                                                     \
        } while (0)

static void dump_dev_cap_flags(struct mlx4_dev *dev, u64 flags)
{
        static const char *fname[] = {
                [ 0] = "RC transport",
                [ 1] = "UC transport",
                [ 2] = "UD transport",
                [ 3] = "XRC transport",
                [ 6] = "SRQ support",
                [ 7] = "IPoIB checksum offload",
                [ 8] = "P_Key violation counter",
                [ 9] = "Q_Key violation counter",
                [12] = "Dual Port Different Protocol (DPDP) support",
                [15] = "Big LSO headers",
                [16] = "MW support",
                [17] = "APM support",
                [18] = "Atomic ops support",
                [19] = "Raw multicast support",
                [20] = "Address vector port checking support",
                [21] = "UD multicast support",
                [30] = "IBoE support",
                [32] = "Unicast loopback support",
                [34] = "FCS header control",
                [37] = "Wake On LAN (port1) support",
                [38] = "Wake On LAN (port2) support",
                [40] = "UDP RSS support",
                [41] = "Unicast VEP steering support",
                [42] = "Multicast VEP steering support",
                [48] = "Counters support",
                [52] = "RSS IP fragments support",
                [53] = "Port ETS Scheduler support",
                [55] = "Port link type sensing support",
                [59] = "Port management change event support",
                [61] = "64 byte EQE support",
                [62] = "64 byte CQE support",
        };
        int i;

        mlx4_dbg(dev, "DEV_CAP flags:\n");
        for (i = 0; i < ARRAY_SIZE(fname); ++i)
                if (fname[i] && (flags & (1LL << i)))
                        mlx4_dbg(dev, "    %s\n", fname[i]);
}

static void dump_dev_cap_flags2(struct mlx4_dev *dev, u64 flags)
{
        static const char * const fname[] = {
                [0] = "RSS support",
                [1] = "RSS Toeplitz Hash Function support",
                [2] = "RSS XOR Hash Function support",
                [3] = "Device managed flow steering support",
                [4] = "Automatic MAC reassignment support",
                [5] = "Time stamping support",
                [6] = "VST (control vlan insertion/stripping) support",
                [7] = "FSM (MAC anti-spoofing) support",
                [8] = "Dynamic QP updates support",
                [9] = "Device managed flow steering IPoIB support",
                [10] = "TCP/IP offloads/flow-steering for VXLAN support",
                [11] = "MAD DEMUX (Secure-Host) support",
                [12] = "Large cache line (>64B) CQE stride support",
                [13] = "Large cache line (>64B) EQE stride support",
                [14] = "Ethernet protocol control support",
                [15] = "Ethernet Backplane autoneg support",
                [16] = "CONFIG DEV support",
                [17] = "Asymmetric EQs support",
                [18] = "More than 80 VFs support",
                [19] = "Performance optimized for limited rule configuration flow steering support",
                [20] = "Recoverable error events support",
                [21] = "Port Remap support",
                [22] = "QCN support",
                [23] = "QP rate limiting support",
                [24] = "Ethernet Flow control statistics support",
                [25] = "Granular QoS per VF support",
                [26] = "Port ETS Scheduler support",
                [27] = "Port beacon support",
                [28] = "RX-ALL support",
                [29] = "802.1ad offload support",
                [31] = "Modifying loopback source checks using UPDATE_QP support",
                [32] = "Loopback source checks support",
                [33] = "RoCEv2 support",
                [34] = "DMFS Sniffer support (UC & MC)",
                [35] = "Diag counters per port",
                [36] = "QinQ VST mode support",
                [37] = "sl to vl mapping table change event support",
                [38] = "user MAC support",
                [39] = "Report driver version to FW support",
        };
        int i;

        for (i = 0; i < ARRAY_SIZE(fname); ++i)
                if (fname[i] && (flags & (1LL << i)))
                        mlx4_dbg(dev, "    %s\n", fname[i]);
}

int mlx4_MOD_STAT_CFG(struct mlx4_dev *dev, struct mlx4_mod_stat_cfg *cfg)
{
        struct mlx4_cmd_mailbox *mailbox;
        u32 *inbox;
        int err = 0;

#define MOD_STAT_CFG_IN_SIZE            0x100

#define MOD_STAT_CFG_PG_SZ_M_OFFSET     0x002
#define MOD_STAT_CFG_PG_SZ_OFFSET       0x003

        mailbox = mlx4_alloc_cmd_mailbox(dev);
        if (IS_ERR(mailbox))
                return PTR_ERR(mailbox);
        inbox = mailbox->buf;

        MLX4_PUT(inbox, cfg->log_pg_sz, MOD_STAT_CFG_PG_SZ_OFFSET);
        MLX4_PUT(inbox, cfg->log_pg_sz_m, MOD_STAT_CFG_PG_SZ_M_OFFSET);

        err = mlx4_cmd(dev, mailbox->dma, 0, 0, MLX4_CMD_MOD_STAT_CFG,
                        MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);

        mlx4_free_cmd_mailbox(dev, mailbox);
        return err;
}

int mlx4_QUERY_FUNC(struct mlx4_dev *dev, struct mlx4_func *func, int slave)
{
        struct mlx4_cmd_mailbox *mailbox;
        u32 *outbox;
        u8 in_modifier;
        u8 field;
        u16 field16;
        int err;

#define QUERY_FUNC_BUS_OFFSET                   0x00
#define QUERY_FUNC_DEVICE_OFFSET                0x01
#define QUERY_FUNC_FUNCTION_OFFSET              0x01
#define QUERY_FUNC_PHYSICAL_FUNCTION_OFFSET     0x03
#define QUERY_FUNC_RSVD_EQS_OFFSET              0x04
#define QUERY_FUNC_MAX_EQ_OFFSET                0x06
#define QUERY_FUNC_RSVD_UARS_OFFSET             0x0b

        mailbox = mlx4_alloc_cmd_mailbox(dev);
        if (IS_ERR(mailbox))
                return PTR_ERR(mailbox);
        outbox = mailbox->buf;

        in_modifier = slave;

        err = mlx4_cmd_box(dev, 0, mailbox->dma, in_modifier, 0,
                           MLX4_CMD_QUERY_FUNC,
                           MLX4_CMD_TIME_CLASS_A,
                           MLX4_CMD_NATIVE);
        if (err)
                goto out;

        MLX4_GET(field, outbox, QUERY_FUNC_BUS_OFFSET);
        func->bus = field & 0xf;
        MLX4_GET(field, outbox, QUERY_FUNC_DEVICE_OFFSET);
        func->device = field & 0xf1;
        MLX4_GET(field, outbox, QUERY_FUNC_FUNCTION_OFFSET);
        func->function = field & 0x7;
        MLX4_GET(field, outbox, QUERY_FUNC_PHYSICAL_FUNCTION_OFFSET);
        func->physical_function = field & 0xf;
        MLX4_GET(field16, outbox, QUERY_FUNC_RSVD_EQS_OFFSET);
        func->rsvd_eqs = field16 & 0xffff;
        MLX4_GET(field16, outbox, QUERY_FUNC_MAX_EQ_OFFSET);
        func->max_eq = field16 & 0xffff;
        MLX4_GET(field, outbox, QUERY_FUNC_RSVD_UARS_OFFSET);
        func->rsvd_uars = field & 0x0f;

        mlx4_dbg(dev, "Bus: %d, Device: %d, Function: %d, Physical function: %d, Max EQs: %d, Reserved EQs: %d, Reserved UARs: %d\n",
                 func->bus, func->device, func->function, func->physical_function,
                 func->max_eq, func->rsvd_eqs, func->rsvd_uars);

out:
        mlx4_free_cmd_mailbox(dev, mailbox);
        return err;
}

static int mlx4_activate_vst_qinq(struct mlx4_priv *priv, int slave, int port)
{
        struct mlx4_vport_oper_state *vp_oper;
        struct mlx4_vport_state *vp_admin;
        int err;

        vp_oper = &priv->mfunc.master.vf_oper[slave].vport[port];
        vp_admin = &priv->mfunc.master.vf_admin[slave].vport[port];

        if (vp_admin->default_vlan != vp_oper->state.default_vlan) {
                err = __mlx4_register_vlan(&priv->dev, port,
                                           vp_admin->default_vlan,
                                           &vp_oper->vlan_idx);
                if (err) {
                        vp_oper->vlan_idx = NO_INDX;
                        mlx4_warn(&priv->dev,
                                  "No vlan resources slave %d, port %d\n",
                                  slave, port);
                        return err;
                }
                mlx4_dbg(&priv->dev, "alloc vlan %d idx  %d slave %d port %d\n",
                         (int)(vp_oper->state.default_vlan),
                         vp_oper->vlan_idx, slave, port);
        }
        vp_oper->state.vlan_proto   = vp_admin->vlan_proto;
        vp_oper->state.default_vlan = vp_admin->default_vlan;
        vp_oper->state.default_qos  = vp_admin->default_qos;

        return 0;
}

static int mlx4_handle_vst_qinq(struct mlx4_priv *priv, int slave, int port)
{
        struct mlx4_vport_oper_state *vp_oper;
        struct mlx4_slave_state *slave_state;
        struct mlx4_vport_state *vp_admin;
        int err;

        vp_oper = &priv->mfunc.master.vf_oper[slave].vport[port];
        vp_admin = &priv->mfunc.master.vf_admin[slave].vport[port];
        slave_state = &priv->mfunc.master.slave_state[slave];

        if ((vp_admin->vlan_proto != htons(ETH_P_8021AD)) ||
            (!slave_state->active))
                return 0;

        if (vp_oper->state.vlan_proto == vp_admin->vlan_proto &&
            vp_oper->state.default_vlan == vp_admin->default_vlan &&
            vp_oper->state.default_qos == vp_admin->default_qos)
                return 0;

        if (!slave_state->vst_qinq_supported) {
                /* Warn and revert the request to set vst QinQ mode */
                vp_admin->vlan_proto   = vp_oper->state.vlan_proto;
                vp_admin->default_vlan = vp_oper->state.default_vlan;
                vp_admin->default_qos  = vp_oper->state.default_qos;

                mlx4_warn(&priv->dev,
                          "Slave %d does not support VST QinQ mode\n", slave);
                return 0;
        }

        err = mlx4_activate_vst_qinq(priv, slave, port);
        return err;
}

int mlx4_QUERY_FUNC_CAP_wrapper(struct mlx4_dev *dev, int slave,
                                struct mlx4_vhcr *vhcr,
                                struct mlx4_cmd_mailbox *inbox,
                                struct mlx4_cmd_mailbox *outbox,
                                struct mlx4_cmd_info *cmd)
{
        struct mlx4_priv *priv = mlx4_priv(dev);
        u8      field, port;
        u32     size, proxy_qp, qkey;
        int     err = 0;
        struct mlx4_func func;

#define QUERY_FUNC_CAP_FLAGS_OFFSET             0x0
#define QUERY_FUNC_CAP_NUM_PORTS_OFFSET         0x1
#define QUERY_FUNC_CAP_PF_BHVR_OFFSET           0x4
#define QUERY_FUNC_CAP_FMR_OFFSET               0x8
#define QUERY_FUNC_CAP_QP_QUOTA_OFFSET_DEP      0x10
#define QUERY_FUNC_CAP_CQ_QUOTA_OFFSET_DEP      0x14
#define QUERY_FUNC_CAP_SRQ_QUOTA_OFFSET_DEP     0x18
#define QUERY_FUNC_CAP_MPT_QUOTA_OFFSET_DEP     0x20
#define QUERY_FUNC_CAP_MTT_QUOTA_OFFSET_DEP     0x24
#define QUERY_FUNC_CAP_MCG_QUOTA_OFFSET_DEP     0x28
#define QUERY_FUNC_CAP_MAX_EQ_OFFSET            0x2c
#define QUERY_FUNC_CAP_RESERVED_EQ_OFFSET       0x30
#define QUERY_FUNC_CAP_QP_RESD_LKEY_OFFSET      0x48

#define QUERY_FUNC_CAP_QP_QUOTA_OFFSET          0x50
#define QUERY_FUNC_CAP_CQ_QUOTA_OFFSET          0x54
#define QUERY_FUNC_CAP_SRQ_QUOTA_OFFSET         0x58
#define QUERY_FUNC_CAP_MPT_QUOTA_OFFSET         0x60
#define QUERY_FUNC_CAP_MTT_QUOTA_OFFSET         0x64
#define QUERY_FUNC_CAP_MCG_QUOTA_OFFSET         0x68

#define QUERY_FUNC_CAP_EXTRA_FLAGS_OFFSET       0x6c

#define QUERY_FUNC_CAP_FMR_FLAG                 0x80
#define QUERY_FUNC_CAP_FLAG_RDMA                0x40
#define QUERY_FUNC_CAP_FLAG_ETH                 0x80
#define QUERY_FUNC_CAP_FLAG_QUOTAS              0x10
#define QUERY_FUNC_CAP_FLAG_RESD_LKEY           0x08
#define QUERY_FUNC_CAP_FLAG_VALID_MAILBOX       0x04

#define QUERY_FUNC_CAP_EXTRA_FLAGS_BF_QP_ALLOC_FLAG     (1UL << 31)
#define QUERY_FUNC_CAP_EXTRA_FLAGS_A0_QP_ALLOC_FLAG     (1UL << 30)

/* when opcode modifier = 1 */
#define QUERY_FUNC_CAP_PHYS_PORT_OFFSET         0x3
#define QUERY_FUNC_CAP_PRIV_VF_QKEY_OFFSET      0x4
#define QUERY_FUNC_CAP_FLAGS0_OFFSET            0x8
#define QUERY_FUNC_CAP_FLAGS1_OFFSET            0xc

#define QUERY_FUNC_CAP_QP0_TUNNEL               0x10
#define QUERY_FUNC_CAP_QP0_PROXY                0x14
#define QUERY_FUNC_CAP_QP1_TUNNEL               0x18
#define QUERY_FUNC_CAP_QP1_PROXY                0x1c
#define QUERY_FUNC_CAP_PHYS_PORT_ID             0x28

#define QUERY_FUNC_CAP_FLAGS1_FORCE_MAC         0x40
#define QUERY_FUNC_CAP_FLAGS1_FORCE_VLAN        0x80
#define QUERY_FUNC_CAP_FLAGS1_NIC_INFO                  0x10
#define QUERY_FUNC_CAP_VF_ENABLE_QP0            0x08

#define QUERY_FUNC_CAP_FLAGS0_FORCE_PHY_WQE_GID 0x80
#define QUERY_FUNC_CAP_PHV_BIT                  0x40
#define QUERY_FUNC_CAP_VLAN_OFFLOAD_DISABLE     0x20

#define QUERY_FUNC_CAP_SUPPORTS_VST_QINQ        BIT(30)
#define QUERY_FUNC_CAP_SUPPORTS_NON_POWER_OF_2_NUM_EQS BIT(31)

        if (vhcr->op_modifier == 1) {
                struct mlx4_active_ports actv_ports =
                        mlx4_get_active_ports(dev, slave);
                int converted_port = mlx4_slave_convert_port(
                                dev, slave, vhcr->in_modifier);
                struct mlx4_vport_oper_state *vp_oper;

                if (converted_port < 0)
                        return -EINVAL;

                vhcr->in_modifier = converted_port;
                /* phys-port = logical-port */
                field = vhcr->in_modifier -
                        find_first_bit(actv_ports.ports, dev->caps.num_ports);
                MLX4_PUT(outbox->buf, field, QUERY_FUNC_CAP_PHYS_PORT_OFFSET);

                port = vhcr->in_modifier;
                proxy_qp = dev->phys_caps.base_proxy_sqpn + 8 * slave + port - 1;

                /* Set nic_info bit to mark new fields support */
                field  = QUERY_FUNC_CAP_FLAGS1_NIC_INFO;

                if (mlx4_vf_smi_enabled(dev, slave, port) &&
                    !mlx4_get_parav_qkey(dev, proxy_qp, &qkey)) {
                        field |= QUERY_FUNC_CAP_VF_ENABLE_QP0;
                        MLX4_PUT(outbox->buf, qkey,
                                 QUERY_FUNC_CAP_PRIV_VF_QKEY_OFFSET);
                }
                MLX4_PUT(outbox->buf, field, QUERY_FUNC_CAP_FLAGS1_OFFSET);

                /* size is now the QP number */
                size = dev->phys_caps.base_tunnel_sqpn + 8 * slave + port - 1;
                MLX4_PUT(outbox->buf, size, QUERY_FUNC_CAP_QP0_TUNNEL);

                size += 2;
                MLX4_PUT(outbox->buf, size, QUERY_FUNC_CAP_QP1_TUNNEL);

                MLX4_PUT(outbox->buf, proxy_qp, QUERY_FUNC_CAP_QP0_PROXY);
                proxy_qp += 2;
                MLX4_PUT(outbox->buf, proxy_qp, QUERY_FUNC_CAP_QP1_PROXY);

                MLX4_PUT(outbox->buf, dev->caps.phys_port_id[vhcr->in_modifier],
                         QUERY_FUNC_CAP_PHYS_PORT_ID);

                vp_oper = &priv->mfunc.master.vf_oper[slave].vport[port];
                err = mlx4_handle_vst_qinq(priv, slave, port);
                if (err)
                        return err;

                field = 0;
                if (dev->caps.phv_bit[port])
                        field |= QUERY_FUNC_CAP_PHV_BIT;
                if (vp_oper->state.vlan_proto == htons(ETH_P_8021AD))
                        field |= QUERY_FUNC_CAP_VLAN_OFFLOAD_DISABLE;
                MLX4_PUT(outbox->buf, field, QUERY_FUNC_CAP_FLAGS0_OFFSET);

        } else if (vhcr->op_modifier == 0) {
                struct mlx4_active_ports actv_ports =
                        mlx4_get_active_ports(dev, slave);
                struct mlx4_slave_state *slave_state =
                        &priv->mfunc.master.slave_state[slave];

                /* enable rdma and ethernet interfaces, new quota locations,
                 * and reserved lkey
                 */
                field = (QUERY_FUNC_CAP_FLAG_ETH | QUERY_FUNC_CAP_FLAG_RDMA |
                         QUERY_FUNC_CAP_FLAG_QUOTAS | QUERY_FUNC_CAP_FLAG_VALID_MAILBOX |
                         QUERY_FUNC_CAP_FLAG_RESD_LKEY);
                MLX4_PUT(outbox->buf, field, QUERY_FUNC_CAP_FLAGS_OFFSET);

                field = min(
                        bitmap_weight(actv_ports.ports, dev->caps.num_ports),
                        dev->caps.num_ports);
                MLX4_PUT(outbox->buf, field, QUERY_FUNC_CAP_NUM_PORTS_OFFSET);

                size = dev->caps.function_caps; /* set PF behaviours */
                MLX4_PUT(outbox->buf, size, QUERY_FUNC_CAP_PF_BHVR_OFFSET);

                field = 0; /* protected FMR support not available as yet */
                MLX4_PUT(outbox->buf, field, QUERY_FUNC_CAP_FMR_OFFSET);

                size = priv->mfunc.master.res_tracker.res_alloc[RES_QP].quota[slave];
                MLX4_PUT(outbox->buf, size, QUERY_FUNC_CAP_QP_QUOTA_OFFSET);
                size = dev->caps.num_qps;
                MLX4_PUT(outbox->buf, size, QUERY_FUNC_CAP_QP_QUOTA_OFFSET_DEP);

                size = priv->mfunc.master.res_tracker.res_alloc[RES_SRQ].quota[slave];
                MLX4_PUT(outbox->buf, size, QUERY_FUNC_CAP_SRQ_QUOTA_OFFSET);
                size = dev->caps.num_srqs;
                MLX4_PUT(outbox->buf, size, QUERY_FUNC_CAP_SRQ_QUOTA_OFFSET_DEP);

                size = priv->mfunc.master.res_tracker.res_alloc[RES_CQ].quota[slave];
                MLX4_PUT(outbox->buf, size, QUERY_FUNC_CAP_CQ_QUOTA_OFFSET);
                size = dev->caps.num_cqs;
                MLX4_PUT(outbox->buf, size, QUERY_FUNC_CAP_CQ_QUOTA_OFFSET_DEP);

                if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SYS_EQS) ||
                    mlx4_QUERY_FUNC(dev, &func, slave)) {
                        size = vhcr->in_modifier &
                                QUERY_FUNC_CAP_SUPPORTS_NON_POWER_OF_2_NUM_EQS ?
                                dev->caps.num_eqs :
                                rounddown_pow_of_two(dev->caps.num_eqs);
                        MLX4_PUT(outbox->buf, size, QUERY_FUNC_CAP_MAX_EQ_OFFSET);
                        size = dev->caps.reserved_eqs;
                        MLX4_PUT(outbox->buf, size, QUERY_FUNC_CAP_RESERVED_EQ_OFFSET);
                } else {
                        size = vhcr->in_modifier &
                                QUERY_FUNC_CAP_SUPPORTS_NON_POWER_OF_2_NUM_EQS ?
                                func.max_eq :
                                rounddown_pow_of_two(func.max_eq);
                        MLX4_PUT(outbox->buf, size, QUERY_FUNC_CAP_MAX_EQ_OFFSET);
                        size = func.rsvd_eqs;
                        MLX4_PUT(outbox->buf, size, QUERY_FUNC_CAP_RESERVED_EQ_OFFSET);
                }

                size = priv->mfunc.master.res_tracker.res_alloc[RES_MPT].quota[slave];
                MLX4_PUT(outbox->buf, size, QUERY_FUNC_CAP_MPT_QUOTA_OFFSET);
                size = dev->caps.num_mpts;
                MLX4_PUT(outbox->buf, size, QUERY_FUNC_CAP_MPT_QUOTA_OFFSET_DEP);

                size = priv->mfunc.master.res_tracker.res_alloc[RES_MTT].quota[slave];
                MLX4_PUT(outbox->buf, size, QUERY_FUNC_CAP_MTT_QUOTA_OFFSET);
                size = dev->caps.num_mtts;
                MLX4_PUT(outbox->buf, size, QUERY_FUNC_CAP_MTT_QUOTA_OFFSET_DEP);

                size = dev->caps.num_mgms + dev->caps.num_amgms;
                MLX4_PUT(outbox->buf, size, QUERY_FUNC_CAP_MCG_QUOTA_OFFSET);
                MLX4_PUT(outbox->buf, size, QUERY_FUNC_CAP_MCG_QUOTA_OFFSET_DEP);

                size = QUERY_FUNC_CAP_EXTRA_FLAGS_BF_QP_ALLOC_FLAG |
                        QUERY_FUNC_CAP_EXTRA_FLAGS_A0_QP_ALLOC_FLAG;
                MLX4_PUT(outbox->buf, size, QUERY_FUNC_CAP_EXTRA_FLAGS_OFFSET);

                size = dev->caps.reserved_lkey + ((slave << 8) & 0xFF00);
                MLX4_PUT(outbox->buf, size, QUERY_FUNC_CAP_QP_RESD_LKEY_OFFSET);

                if (vhcr->in_modifier & QUERY_FUNC_CAP_SUPPORTS_VST_QINQ)
                        slave_state->vst_qinq_supported = true;

        } else
                err = -EINVAL;

        return err;
}

int mlx4_QUERY_FUNC_CAP(struct mlx4_dev *dev, u8 gen_or_port,
                        struct mlx4_func_cap *func_cap)
{
        struct mlx4_cmd_mailbox *mailbox;
        u32                     *outbox;
        u8                      field, op_modifier;
        u32                     size, qkey;
        int                     err = 0, quotas = 0;
        u32                     in_modifier;
        u32                     slave_caps;

        op_modifier = !!gen_or_port; /* 0 = general, 1 = logical port */
        slave_caps = QUERY_FUNC_CAP_SUPPORTS_VST_QINQ |
                QUERY_FUNC_CAP_SUPPORTS_NON_POWER_OF_2_NUM_EQS;
        in_modifier = op_modifier ? gen_or_port : slave_caps;

        mailbox = mlx4_alloc_cmd_mailbox(dev);
        if (IS_ERR(mailbox))
                return PTR_ERR(mailbox);

        err = mlx4_cmd_box(dev, 0, mailbox->dma, in_modifier, op_modifier,
                           MLX4_CMD_QUERY_FUNC_CAP,
                           MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
        if (err)
                goto out;

        outbox = mailbox->buf;

        if (!op_modifier) {
                MLX4_GET(field, outbox, QUERY_FUNC_CAP_FLAGS_OFFSET);
                if (!(field & (QUERY_FUNC_CAP_FLAG_ETH | QUERY_FUNC_CAP_FLAG_RDMA))) {
                        mlx4_err(dev, "The host supports neither eth nor rdma interfaces\n");
                        err = -EPROTONOSUPPORT;
                        goto out;
                }
                func_cap->flags = field;
                quotas = !!(func_cap->flags & QUERY_FUNC_CAP_FLAG_QUOTAS);

                MLX4_GET(field, outbox, QUERY_FUNC_CAP_NUM_PORTS_OFFSET);
                func_cap->num_ports = field;

                MLX4_GET(size, outbox, QUERY_FUNC_CAP_PF_BHVR_OFFSET);
                func_cap->pf_context_behaviour = size;

                if (quotas) {
                        MLX4_GET(size, outbox, QUERY_FUNC_CAP_QP_QUOTA_OFFSET);
                        func_cap->qp_quota = size & 0xFFFFFF;

                        MLX4_GET(size, outbox, QUERY_FUNC_CAP_SRQ_QUOTA_OFFSET);
                        func_cap->srq_quota = size & 0xFFFFFF;

                        MLX4_GET(size, outbox, QUERY_FUNC_CAP_CQ_QUOTA_OFFSET);
                        func_cap->cq_quota = size & 0xFFFFFF;

                        MLX4_GET(size, outbox, QUERY_FUNC_CAP_MPT_QUOTA_OFFSET);
                        func_cap->mpt_quota = size & 0xFFFFFF;

                        MLX4_GET(size, outbox, QUERY_FUNC_CAP_MTT_QUOTA_OFFSET);
                        func_cap->mtt_quota = size & 0xFFFFFF;

                        MLX4_GET(size, outbox, QUERY_FUNC_CAP_MCG_QUOTA_OFFSET);
                        func_cap->mcg_quota = size & 0xFFFFFF;

                } else {
                        MLX4_GET(size, outbox, QUERY_FUNC_CAP_QP_QUOTA_OFFSET_DEP);
                        func_cap->qp_quota = size & 0xFFFFFF;

                        MLX4_GET(size, outbox, QUERY_FUNC_CAP_SRQ_QUOTA_OFFSET_DEP);
                        func_cap->srq_quota = size & 0xFFFFFF;

                        MLX4_GET(size, outbox, QUERY_FUNC_CAP_CQ_QUOTA_OFFSET_DEP);
                        func_cap->cq_quota = size & 0xFFFFFF;

                        MLX4_GET(size, outbox, QUERY_FUNC_CAP_MPT_QUOTA_OFFSET_DEP);
                        func_cap->mpt_quota = size & 0xFFFFFF;

                        MLX4_GET(size, outbox, QUERY_FUNC_CAP_MTT_QUOTA_OFFSET_DEP);
                        func_cap->mtt_quota = size & 0xFFFFFF;

                        MLX4_GET(size, outbox, QUERY_FUNC_CAP_MCG_QUOTA_OFFSET_DEP);
                        func_cap->mcg_quota = size & 0xFFFFFF;
                }
                MLX4_GET(size, outbox, QUERY_FUNC_CAP_MAX_EQ_OFFSET);
                func_cap->max_eq = size & 0xFFFFFF;

                MLX4_GET(size, outbox, QUERY_FUNC_CAP_RESERVED_EQ_OFFSET);
                func_cap->reserved_eq = size & 0xFFFFFF;

                if (func_cap->flags & QUERY_FUNC_CAP_FLAG_RESD_LKEY) {
                        MLX4_GET(size, outbox, QUERY_FUNC_CAP_QP_RESD_LKEY_OFFSET);
                        func_cap->reserved_lkey = size;
                } else {
                        func_cap->reserved_lkey = 0;
                }

                func_cap->extra_flags = 0;

                /* Mailbox data from 0x6c and onward should only be treated if
                 * QUERY_FUNC_CAP_FLAG_VALID_MAILBOX is set in func_cap->flags
                 */
                if (func_cap->flags & QUERY_FUNC_CAP_FLAG_VALID_MAILBOX) {
                        MLX4_GET(size, outbox, QUERY_FUNC_CAP_EXTRA_FLAGS_OFFSET);
                        if (size & QUERY_FUNC_CAP_EXTRA_FLAGS_BF_QP_ALLOC_FLAG)
                                func_cap->extra_flags |= MLX4_QUERY_FUNC_FLAGS_BF_RES_QP;
                        if (size & QUERY_FUNC_CAP_EXTRA_FLAGS_A0_QP_ALLOC_FLAG)
                                func_cap->extra_flags |= MLX4_QUERY_FUNC_FLAGS_A0_RES_QP;
                }

                goto out;
        }

        /* logical port query */
        if (gen_or_port > dev->caps.num_ports) {
                err = -EINVAL;
                goto out;
        }

        MLX4_GET(func_cap->flags1, outbox, QUERY_FUNC_CAP_FLAGS1_OFFSET);
        if (dev->caps.port_type[gen_or_port] == MLX4_PORT_TYPE_ETH) {
                if (func_cap->flags1 & QUERY_FUNC_CAP_FLAGS1_FORCE_VLAN) {
                        mlx4_err(dev, "VLAN is enforced on this port\n");
                        err = -EPROTONOSUPPORT;
                        goto out;
                }

                if (func_cap->flags1 & QUERY_FUNC_CAP_FLAGS1_FORCE_MAC) {
                        mlx4_err(dev, "Force mac is enabled on this port\n");
                        err = -EPROTONOSUPPORT;
                        goto out;
                }
        } else if (dev->caps.port_type[gen_or_port] == MLX4_PORT_TYPE_IB) {
                MLX4_GET(field, outbox, QUERY_FUNC_CAP_FLAGS0_OFFSET);
                if (field & QUERY_FUNC_CAP_FLAGS0_FORCE_PHY_WQE_GID) {
                        mlx4_err(dev, "phy_wqe_gid is enforced on this ib port\n");
                        err = -EPROTONOSUPPORT;
                        goto out;
                }
        }

        MLX4_GET(field, outbox, QUERY_FUNC_CAP_PHYS_PORT_OFFSET);
        func_cap->physical_port = field;
        if (func_cap->physical_port != gen_or_port) {
                err = -EINVAL;
                goto out;
        }

        if (func_cap->flags1 & QUERY_FUNC_CAP_VF_ENABLE_QP0) {
                MLX4_GET(qkey, outbox, QUERY_FUNC_CAP_PRIV_VF_QKEY_OFFSET);
                func_cap->spec_qps.qp0_qkey = qkey;
        } else {
                func_cap->spec_qps.qp0_qkey = 0;
        }

        MLX4_GET(size, outbox, QUERY_FUNC_CAP_QP0_TUNNEL);
        func_cap->spec_qps.qp0_tunnel = size & 0xFFFFFF;

        MLX4_GET(size, outbox, QUERY_FUNC_CAP_QP0_PROXY);
        func_cap->spec_qps.qp0_proxy = size & 0xFFFFFF;

        MLX4_GET(size, outbox, QUERY_FUNC_CAP_QP1_TUNNEL);
        func_cap->spec_qps.qp1_tunnel = size & 0xFFFFFF;

        MLX4_GET(size, outbox, QUERY_FUNC_CAP_QP1_PROXY);
        func_cap->spec_qps.qp1_proxy = size & 0xFFFFFF;

        if (func_cap->flags1 & QUERY_FUNC_CAP_FLAGS1_NIC_INFO)
                MLX4_GET(func_cap->phys_port_id, outbox,
                         QUERY_FUNC_CAP_PHYS_PORT_ID);

        MLX4_GET(func_cap->flags0, outbox, QUERY_FUNC_CAP_FLAGS0_OFFSET);

        /* All other resources are allocated by the master, but we still report
         * 'num' and 'reserved' capabilities as follows:
         * - num remains the maximum resource index
         * - 'num - reserved' is the total available objects of a resource, but
         *   resource indices may be less than 'reserved'
         * TODO: set per-resource quotas */

out:
        mlx4_free_cmd_mailbox(dev, mailbox);

        return err;
}

static void disable_unsupported_roce_caps(void *buf);

int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
{
        struct mlx4_cmd_mailbox *mailbox;
        u32 *outbox;
        u8 field;
        u32 field32, flags, ext_flags;
        u16 size;
        u16 stat_rate;
        int err;
        int i;

#define QUERY_DEV_CAP_OUT_SIZE                 0x100
#define QUERY_DEV_CAP_MAX_SRQ_SZ_OFFSET         0x10
#define QUERY_DEV_CAP_MAX_QP_SZ_OFFSET          0x11
#define QUERY_DEV_CAP_RSVD_QP_OFFSET            0x12
#define QUERY_DEV_CAP_MAX_QP_OFFSET             0x13
#define QUERY_DEV_CAP_RSVD_SRQ_OFFSET           0x14
#define QUERY_DEV_CAP_MAX_SRQ_OFFSET            0x15
#define QUERY_DEV_CAP_RSVD_EEC_OFFSET           0x16
#define QUERY_DEV_CAP_MAX_EEC_OFFSET            0x17
#define QUERY_DEV_CAP_MAX_CQ_SZ_OFFSET          0x19
#define QUERY_DEV_CAP_RSVD_CQ_OFFSET            0x1a
#define QUERY_DEV_CAP_MAX_CQ_OFFSET             0x1b
#define QUERY_DEV_CAP_MAX_MPT_OFFSET            0x1d
#define QUERY_DEV_CAP_RSVD_EQ_OFFSET            0x1e
#define QUERY_DEV_CAP_MAX_EQ_OFFSET             0x1f
#define QUERY_DEV_CAP_RSVD_MTT_OFFSET           0x20
#define QUERY_DEV_CAP_MAX_MRW_SZ_OFFSET         0x21
#define QUERY_DEV_CAP_RSVD_MRW_OFFSET           0x22
#define QUERY_DEV_CAP_MAX_MTT_SEG_OFFSET        0x23
#define QUERY_DEV_CAP_NUM_SYS_EQ_OFFSET         0x26
#define QUERY_DEV_CAP_MAX_AV_OFFSET             0x27
#define QUERY_DEV_CAP_MAX_REQ_QP_OFFSET         0x29
#define QUERY_DEV_CAP_MAX_RES_QP_OFFSET         0x2b
#define QUERY_DEV_CAP_MAX_GSO_OFFSET            0x2d
#define QUERY_DEV_CAP_RSS_OFFSET                0x2e
#define QUERY_DEV_CAP_MAX_RDMA_OFFSET           0x2f
#define QUERY_DEV_CAP_RSZ_SRQ_OFFSET            0x33
#define QUERY_DEV_CAP_PORT_BEACON_OFFSET        0x34
#define QUERY_DEV_CAP_ACK_DELAY_OFFSET          0x35
#define QUERY_DEV_CAP_MTU_WIDTH_OFFSET          0x36
#define QUERY_DEV_CAP_VL_PORT_OFFSET            0x37
#define QUERY_DEV_CAP_MAX_MSG_SZ_OFFSET         0x38
#define QUERY_DEV_CAP_MAX_GID_OFFSET            0x3b
#define QUERY_DEV_CAP_RATE_SUPPORT_OFFSET       0x3c
#define QUERY_DEV_CAP_CQ_TS_SUPPORT_OFFSET      0x3e
#define QUERY_DEV_CAP_MAX_PKEY_OFFSET           0x3f
#define QUERY_DEV_CAP_EXT_FLAGS_OFFSET          0x40
#define QUERY_DEV_CAP_WOL_OFFSET                0x43
#define QUERY_DEV_CAP_FLAGS_OFFSET              0x44
#define QUERY_DEV_CAP_RSVD_UAR_OFFSET           0x48
#define QUERY_DEV_CAP_UAR_SZ_OFFSET             0x49
#define QUERY_DEV_CAP_PAGE_SZ_OFFSET            0x4b
#define QUERY_DEV_CAP_BF_OFFSET                 0x4c
#define QUERY_DEV_CAP_LOG_BF_REG_SZ_OFFSET      0x4d
#define QUERY_DEV_CAP_LOG_MAX_BF_REGS_PER_PAGE_OFFSET   0x4e
#define QUERY_DEV_CAP_LOG_MAX_BF_PAGES_OFFSET   0x4f
#define QUERY_DEV_CAP_MAX_SG_SQ_OFFSET          0x51
#define QUERY_DEV_CAP_MAX_DESC_SZ_SQ_OFFSET     0x52
#define QUERY_DEV_CAP_MAX_SG_RQ_OFFSET          0x55
#define QUERY_DEV_CAP_MAX_DESC_SZ_RQ_OFFSET     0x56
#define QUERY_DEV_CAP_USER_MAC_EN_OFFSET        0x5C
#define QUERY_DEV_CAP_SVLAN_BY_QP_OFFSET        0x5D
#define QUERY_DEV_CAP_MAX_QP_MCG_OFFSET         0x61
#define QUERY_DEV_CAP_RSVD_MCG_OFFSET           0x62
#define QUERY_DEV_CAP_MAX_MCG_OFFSET            0x63
#define QUERY_DEV_CAP_RSVD_PD_OFFSET            0x64
#define QUERY_DEV_CAP_MAX_PD_OFFSET             0x65
#define QUERY_DEV_CAP_RSVD_XRC_OFFSET           0x66
#define QUERY_DEV_CAP_MAX_XRC_OFFSET            0x67
#define QUERY_DEV_CAP_MAX_COUNTERS_OFFSET       0x68
#define QUERY_DEV_CAP_PORT_FLOWSTATS_COUNTERS_OFFSET    0x70
#define QUERY_DEV_CAP_EXT_2_FLAGS_OFFSET        0x70
#define QUERY_DEV_CAP_FLOW_STEERING_IPOIB_OFFSET        0x74
#define QUERY_DEV_CAP_FLOW_STEERING_RANGE_EN_OFFSET     0x76
#define QUERY_DEV_CAP_FLOW_STEERING_MAX_QP_OFFSET       0x77
#define QUERY_DEV_CAP_SL2VL_EVENT_OFFSET        0x78
#define QUERY_DEV_CAP_CQ_EQ_CACHE_LINE_STRIDE   0x7a
#define QUERY_DEV_CAP_ECN_QCN_VER_OFFSET        0x7b
#define QUERY_DEV_CAP_RDMARC_ENTRY_SZ_OFFSET    0x80
#define QUERY_DEV_CAP_QPC_ENTRY_SZ_OFFSET       0x82
#define QUERY_DEV_CAP_AUX_ENTRY_SZ_OFFSET       0x84
#define QUERY_DEV_CAP_ALTC_ENTRY_SZ_OFFSET      0x86
#define QUERY_DEV_CAP_EQC_ENTRY_SZ_OFFSET       0x88
#define QUERY_DEV_CAP_CQC_ENTRY_SZ_OFFSET       0x8a
#define QUERY_DEV_CAP_SRQ_ENTRY_SZ_OFFSET       0x8c
#define QUERY_DEV_CAP_C_MPT_ENTRY_SZ_OFFSET     0x8e
#define QUERY_DEV_CAP_MTT_ENTRY_SZ_OFFSET       0x90
#define QUERY_DEV_CAP_D_MPT_ENTRY_SZ_OFFSET     0x92
#define QUERY_DEV_CAP_BMME_FLAGS_OFFSET         0x94
#define QUERY_DEV_CAP_CONFIG_DEV_OFFSET         0x94
#define QUERY_DEV_CAP_PHV_EN_OFFSET             0x96
#define QUERY_DEV_CAP_RSVD_LKEY_OFFSET          0x98
#define QUERY_DEV_CAP_MAX_ICM_SZ_OFFSET         0xa0
#define QUERY_DEV_CAP_ETH_BACKPL_OFFSET         0x9c
#define QUERY_DEV_CAP_DIAG_RPRT_PER_PORT        0x9c
#define QUERY_DEV_CAP_FW_REASSIGN_MAC           0x9d
#define QUERY_DEV_CAP_VXLAN                     0x9e
#define QUERY_DEV_CAP_MAD_DEMUX_OFFSET          0xb0
#define QUERY_DEV_CAP_DMFS_HIGH_RATE_QPN_BASE_OFFSET    0xa8
#define QUERY_DEV_CAP_DMFS_HIGH_RATE_QPN_RANGE_OFFSET   0xac
#define QUERY_DEV_CAP_QP_RATE_LIMIT_NUM_OFFSET  0xcc
#define QUERY_DEV_CAP_QP_RATE_LIMIT_MAX_OFFSET  0xd0
#define QUERY_DEV_CAP_QP_RATE_LIMIT_MIN_OFFSET  0xd2
#define QUERY_DEV_CAP_HEALTH_BUFFER_ADDRESS_OFFSET      0xe4

        dev_cap->flags2 = 0;
        mailbox = mlx4_alloc_cmd_mailbox(dev);
        if (IS_ERR(mailbox))
                return PTR_ERR(mailbox);
        outbox = mailbox->buf;

        err = mlx4_cmd_box(dev, 0, mailbox->dma, 0, 0, MLX4_CMD_QUERY_DEV_CAP,
                           MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
        if (err)
                goto out;

        if (mlx4_is_mfunc(dev))
                disable_unsupported_roce_caps(outbox);
        MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_QP_OFFSET);
        dev_cap->reserved_qps = 1 << (field & 0xf);
        MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_QP_OFFSET);
        dev_cap->max_qps = 1 << (field & 0x1f);
        MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_SRQ_OFFSET);
        dev_cap->reserved_srqs = 1 << (field >> 4);
        MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_SRQ_OFFSET);
        dev_cap->max_srqs = 1 << (field & 0x1f);
        MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_CQ_SZ_OFFSET);
        dev_cap->max_cq_sz = 1 << field;
        MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_CQ_OFFSET);
        dev_cap->reserved_cqs = 1 << (field & 0xf);
        MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_CQ_OFFSET);
        dev_cap->max_cqs = 1 << (field & 0x1f);
        MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_MPT_OFFSET);
        dev_cap->max_mpts = 1 << (field & 0x3f);
        MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_EQ_OFFSET);
        dev_cap->reserved_eqs = 1 << (field & 0xf);
        MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_EQ_OFFSET);
        dev_cap->max_eqs = 1 << (field & 0xf);
        MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_MTT_OFFSET);
        dev_cap->reserved_mtts = 1 << (field >> 4);
        MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_MRW_OFFSET);
        dev_cap->reserved_mrws = 1 << (field & 0xf);
        MLX4_GET(size, outbox, QUERY_DEV_CAP_NUM_SYS_EQ_OFFSET);
        dev_cap->num_sys_eqs = size & 0xfff;
        MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_REQ_QP_OFFSET);
        dev_cap->max_requester_per_qp = 1 << (field & 0x3f);
        MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_RES_QP_OFFSET);
        dev_cap->max_responder_per_qp = 1 << (field & 0x3f);
        MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_GSO_OFFSET);
        field &= 0x1f;
        if (!field)
                dev_cap->max_gso_sz = 0;
        else
                dev_cap->max_gso_sz = 1 << field;

        MLX4_GET(field, outbox, QUERY_DEV_CAP_RSS_OFFSET);
        if (field & 0x20)
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_RSS_XOR;
        if (field & 0x10)
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_RSS_TOP;
        field &= 0xf;
        if (field) {
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_RSS;
                dev_cap->max_rss_tbl_sz = 1 << field;
        } else
                dev_cap->max_rss_tbl_sz = 0;
        MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_RDMA_OFFSET);
        dev_cap->max_rdma_global = 1 << (field & 0x3f);
        MLX4_GET(field, outbox, QUERY_DEV_CAP_ACK_DELAY_OFFSET);
        dev_cap->local_ca_ack_delay = field & 0x1f;
        MLX4_GET(field, outbox, QUERY_DEV_CAP_VL_PORT_OFFSET);
        dev_cap->num_ports = field & 0xf;
        MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_MSG_SZ_OFFSET);
        dev_cap->max_msg_sz = 1 << (field & 0x1f);
        MLX4_GET(field, outbox, QUERY_DEV_CAP_PORT_FLOWSTATS_COUNTERS_OFFSET);
        if (field & 0x10)
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN;
        MLX4_GET(field, outbox, QUERY_DEV_CAP_FLOW_STEERING_RANGE_EN_OFFSET);
        if (field & 0x80)
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_FS_EN;
        dev_cap->fs_log_max_ucast_qp_range_size = field & 0x1f;
        if (field & 0x20)
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_DMFS_UC_MC_SNIFFER;
        MLX4_GET(field, outbox, QUERY_DEV_CAP_PORT_BEACON_OFFSET);
        if (field & 0x80)
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_PORT_BEACON;
        MLX4_GET(field, outbox, QUERY_DEV_CAP_FLOW_STEERING_IPOIB_OFFSET);
        if (field & 0x80)
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_DMFS_IPOIB;
        MLX4_GET(field, outbox, QUERY_DEV_CAP_FLOW_STEERING_MAX_QP_OFFSET);
        dev_cap->fs_max_num_qp_per_entry = field;
        MLX4_GET(field, outbox, QUERY_DEV_CAP_SL2VL_EVENT_OFFSET);
        if (field & (1 << 5))
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_SL_TO_VL_CHANGE_EVENT;
        MLX4_GET(field, outbox, QUERY_DEV_CAP_ECN_QCN_VER_OFFSET);
        if (field & 0x1)
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_QCN;
        MLX4_GET(stat_rate, outbox, QUERY_DEV_CAP_RATE_SUPPORT_OFFSET);
        dev_cap->stat_rate_support = stat_rate;
        MLX4_GET(field, outbox, QUERY_DEV_CAP_CQ_TS_SUPPORT_OFFSET);
        if (field & 0x80)
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_TS;
        MLX4_GET(ext_flags, outbox, QUERY_DEV_CAP_EXT_FLAGS_OFFSET);
        MLX4_GET(flags, outbox, QUERY_DEV_CAP_FLAGS_OFFSET);
        dev_cap->flags = flags | (u64)ext_flags << 32;
        MLX4_GET(field, outbox, QUERY_DEV_CAP_WOL_OFFSET);
        dev_cap->wol_port[1] = !!(field & 0x20);
        dev_cap->wol_port[2] = !!(field & 0x40);
        MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_UAR_OFFSET);
        dev_cap->reserved_uars = field >> 4;
        MLX4_GET(field, outbox, QUERY_DEV_CAP_UAR_SZ_OFFSET);
        dev_cap->uar_size = 1 << ((field & 0x3f) + 20);
        MLX4_GET(field, outbox, QUERY_DEV_CAP_PAGE_SZ_OFFSET);
        dev_cap->min_page_sz = 1 << field;

        MLX4_GET(field, outbox, QUERY_DEV_CAP_BF_OFFSET);
        if (field & 0x80) {
                MLX4_GET(field, outbox, QUERY_DEV_CAP_LOG_BF_REG_SZ_OFFSET);
                dev_cap->bf_reg_size = 1 << (field & 0x1f);
                MLX4_GET(field, outbox, QUERY_DEV_CAP_LOG_MAX_BF_REGS_PER_PAGE_OFFSET);
                if ((1 << (field & 0x3f)) > (PAGE_SIZE / dev_cap->bf_reg_size))
                        field = 3;
                dev_cap->bf_regs_per_page = 1 << (field & 0x3f);
        } else {
                dev_cap->bf_reg_size = 0;
        }

        MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_SG_SQ_OFFSET);
        dev_cap->max_sq_sg = field;
        MLX4_GET(size, outbox, QUERY_DEV_CAP_MAX_DESC_SZ_SQ_OFFSET);
        dev_cap->max_sq_desc_sz = size;

        MLX4_GET(field, outbox, QUERY_DEV_CAP_USER_MAC_EN_OFFSET);
        if (field & (1 << 2))
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_USER_MAC_EN;
        MLX4_GET(field, outbox, QUERY_DEV_CAP_SVLAN_BY_QP_OFFSET);
        if (field & 0x1)
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_SVLAN_BY_QP;
        MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_QP_MCG_OFFSET);
        dev_cap->max_qp_per_mcg = 1 << field;
        MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_MCG_OFFSET);
        dev_cap->reserved_mgms = field & 0xf;
        MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_MCG_OFFSET);
        dev_cap->max_mcgs = 1 << field;
        MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_PD_OFFSET);
        dev_cap->reserved_pds = field >> 4;
        MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_PD_OFFSET);
        dev_cap->max_pds = 1 << (field & 0x3f);
        MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_XRC_OFFSET);
        dev_cap->reserved_xrcds = field >> 4;
        MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_XRC_OFFSET);
        dev_cap->max_xrcds = 1 << (field & 0x1f);

        MLX4_GET(size, outbox, QUERY_DEV_CAP_RDMARC_ENTRY_SZ_OFFSET);
        dev_cap->rdmarc_entry_sz = size;
        MLX4_GET(size, outbox, QUERY_DEV_CAP_QPC_ENTRY_SZ_OFFSET);
        dev_cap->qpc_entry_sz = size;
        MLX4_GET(size, outbox, QUERY_DEV_CAP_AUX_ENTRY_SZ_OFFSET);
        dev_cap->aux_entry_sz = size;
        MLX4_GET(size, outbox, QUERY_DEV_CAP_ALTC_ENTRY_SZ_OFFSET);
        dev_cap->altc_entry_sz = size;
        MLX4_GET(size, outbox, QUERY_DEV_CAP_EQC_ENTRY_SZ_OFFSET);
        dev_cap->eqc_entry_sz = size;
        MLX4_GET(size, outbox, QUERY_DEV_CAP_CQC_ENTRY_SZ_OFFSET);
        dev_cap->cqc_entry_sz = size;
        MLX4_GET(size, outbox, QUERY_DEV_CAP_SRQ_ENTRY_SZ_OFFSET);
        dev_cap->srq_entry_sz = size;
        MLX4_GET(size, outbox, QUERY_DEV_CAP_C_MPT_ENTRY_SZ_OFFSET);
        dev_cap->cmpt_entry_sz = size;
        MLX4_GET(size, outbox, QUERY_DEV_CAP_MTT_ENTRY_SZ_OFFSET);
        dev_cap->mtt_entry_sz = size;
        MLX4_GET(size, outbox, QUERY_DEV_CAP_D_MPT_ENTRY_SZ_OFFSET);
        dev_cap->dmpt_entry_sz = size;

        MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_SRQ_SZ_OFFSET);
        dev_cap->max_srq_sz = 1 << field;

        MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_QP_SZ_OFFSET);
        dev_cap->max_qp_sz = 1 << field;
        MLX4_GET(field, outbox, QUERY_DEV_CAP_RSZ_SRQ_OFFSET);
        dev_cap->resize_srq = field & 1;
        MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_SG_RQ_OFFSET);
        dev_cap->max_rq_sg = field;
        MLX4_GET(size, outbox, QUERY_DEV_CAP_MAX_DESC_SZ_RQ_OFFSET);
        dev_cap->max_rq_desc_sz = size;
        MLX4_GET(field, outbox, QUERY_DEV_CAP_CQ_EQ_CACHE_LINE_STRIDE);
        if (field & (1 << 4))
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_QOS_VPP;
        if (field & (1 << 5))
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_ETH_PROT_CTRL;
        if (field & (1 << 6))
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_CQE_STRIDE;
        if (field & (1 << 7))
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_EQE_STRIDE;
        MLX4_GET(dev_cap->bmme_flags, outbox,
                 QUERY_DEV_CAP_BMME_FLAGS_OFFSET);
        if (dev_cap->bmme_flags & MLX4_FLAG_ROCE_V1_V2)
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_ROCE_V1_V2;
        if (dev_cap->bmme_flags & MLX4_FLAG_PORT_REMAP)
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_PORT_REMAP;
        MLX4_GET(field, outbox, QUERY_DEV_CAP_CONFIG_DEV_OFFSET);
        if (field & 0x20)
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_CONFIG_DEV;
        if (field & (1 << 2))
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_IGNORE_FCS;
        MLX4_GET(field, outbox, QUERY_DEV_CAP_PHV_EN_OFFSET);
        if (field & 0x80)
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_PHV_EN;
        if (field & 0x40)
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN;

        MLX4_GET(dev_cap->reserved_lkey, outbox,
                 QUERY_DEV_CAP_RSVD_LKEY_OFFSET);
        MLX4_GET(field32, outbox, QUERY_DEV_CAP_ETH_BACKPL_OFFSET);
        if (field32 & (1 << 0))
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_ETH_BACKPL_AN_REP;
        if (field32 & (1 << 7))
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_RECOVERABLE_ERROR_EVENT;
        if (field32 & (1 << 8))
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_DRIVER_VERSION_TO_FW;
        MLX4_GET(field32, outbox, QUERY_DEV_CAP_DIAG_RPRT_PER_PORT);
        if (field32 & (1 << 17))
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_DIAG_PER_PORT;
        MLX4_GET(field, outbox, QUERY_DEV_CAP_FW_REASSIGN_MAC);
        if (field & 1<<6)
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN;
        MLX4_GET(field, outbox, QUERY_DEV_CAP_VXLAN);
        if (field & 1<<3)
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_VXLAN_OFFLOADS;
        if (field & (1 << 5))
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_ETS_CFG;
        MLX4_GET(dev_cap->max_icm_sz, outbox,
                 QUERY_DEV_CAP_MAX_ICM_SZ_OFFSET);
        if (dev_cap->flags & MLX4_DEV_CAP_FLAG_COUNTERS)
                MLX4_GET(dev_cap->max_counters, outbox,
                         QUERY_DEV_CAP_MAX_COUNTERS_OFFSET);

        MLX4_GET(field32, outbox,
                 QUERY_DEV_CAP_MAD_DEMUX_OFFSET);
        if (field32 & (1 << 0))
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_MAD_DEMUX;

        MLX4_GET(dev_cap->dmfs_high_rate_qpn_base, outbox,
                 QUERY_DEV_CAP_DMFS_HIGH_RATE_QPN_BASE_OFFSET);
        dev_cap->dmfs_high_rate_qpn_base &= MGM_QPN_MASK;
        MLX4_GET(dev_cap->dmfs_high_rate_qpn_range, outbox,
                 QUERY_DEV_CAP_DMFS_HIGH_RATE_QPN_RANGE_OFFSET);
        dev_cap->dmfs_high_rate_qpn_range &= MGM_QPN_MASK;

        MLX4_GET(size, outbox, QUERY_DEV_CAP_QP_RATE_LIMIT_NUM_OFFSET);
        dev_cap->rl_caps.num_rates = size;
        if (dev_cap->rl_caps.num_rates) {
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT;
                MLX4_GET(size, outbox, QUERY_DEV_CAP_QP_RATE_LIMIT_MAX_OFFSET);
                dev_cap->rl_caps.max_val  = size & 0xfff;
                dev_cap->rl_caps.max_unit = size >> 14;
                MLX4_GET(size, outbox, QUERY_DEV_CAP_QP_RATE_LIMIT_MIN_OFFSET);
                dev_cap->rl_caps.min_val  = size & 0xfff;
                dev_cap->rl_caps.min_unit = size >> 14;
        }

        MLX4_GET(dev_cap->health_buffer_addrs, outbox,
                 QUERY_DEV_CAP_HEALTH_BUFFER_ADDRESS_OFFSET);

        MLX4_GET(field32, outbox, QUERY_DEV_CAP_EXT_2_FLAGS_OFFSET);
        if (field32 & (1 << 16))
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_UPDATE_QP;
        if (field32 & (1 << 18))
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_UPDATE_QP_SRC_CHECK_LB;
        if (field32 & (1 << 19))
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_LB_SRC_CHK;
        if (field32 & (1 << 26))
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_VLAN_CONTROL;
        if (field32 & (1 << 20))
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_FSM;
        if (field32 & (1 << 21))
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_80_VFS;

        for (i = 1; i <= dev_cap->num_ports; i++) {
                err = mlx4_QUERY_PORT(dev, i, dev_cap->port_cap + i);
                if (err)
                        goto out;
        }

        /*
         * Each UAR has 4 EQ doorbells; so if a UAR is reserved, then
         * we can't use any EQs whose doorbell falls on that page,
         * even if the EQ itself isn't reserved.
         */
        if (dev_cap->num_sys_eqs == 0)
                dev_cap->reserved_eqs = max(dev_cap->reserved_uars * 4,
                                            dev_cap->reserved_eqs);
        else
                dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_SYS_EQS;

out:
        mlx4_free_cmd_mailbox(dev, mailbox);
        return err;
}

void mlx4_dev_cap_dump(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
{
        if (dev_cap->bf_reg_size > 0)
                mlx4_dbg(dev, "BlueFlame available (reg size %d, regs/page %d)\n",
                         dev_cap->bf_reg_size, dev_cap->bf_regs_per_page);
        else
                mlx4_dbg(dev, "BlueFlame not available\n");

        mlx4_dbg(dev, "Base MM extensions: flags %08x, rsvd L_Key %08x\n",
                 dev_cap->bmme_flags, dev_cap->reserved_lkey);
        mlx4_dbg(dev, "Max ICM size %lld MB\n",
                 (unsigned long long) dev_cap->max_icm_sz >> 20);
        mlx4_dbg(dev, "Max QPs: %d, reserved QPs: %d, entry size: %d\n",
                 dev_cap->max_qps, dev_cap->reserved_qps, dev_cap->qpc_entry_sz);
        mlx4_dbg(dev, "Max SRQs: %d, reserved SRQs: %d, entry size: %d\n",
                 dev_cap->max_srqs, dev_cap->reserved_srqs, dev_cap->srq_entry_sz);
        mlx4_dbg(dev, "Max CQs: %d, reserved CQs: %d, entry size: %d\n",
                 dev_cap->max_cqs, dev_cap->reserved_cqs, dev_cap->cqc_entry_sz);
        mlx4_dbg(dev, "Num sys EQs: %d, max EQs: %d, reserved EQs: %d, entry size: %d\n",
                 dev_cap->num_sys_eqs, dev_cap->max_eqs, dev_cap->reserved_eqs,
                 dev_cap->eqc_entry_sz);
        mlx4_dbg(dev, "reserved MPTs: %d, reserved MTTs: %d\n",
                 dev_cap->reserved_mrws, dev_cap->reserved_mtts);
        mlx4_dbg(dev, "Max PDs: %d, reserved PDs: %d, reserved UARs: %d\n",
                 dev_cap->max_pds, dev_cap->reserved_pds, dev_cap->reserved_uars);
        mlx4_dbg(dev, "Max QP/MCG: %d, reserved MGMs: %d\n",
                 dev_cap->max_pds, dev_cap->reserved_mgms);
        mlx4_dbg(dev, "Max CQEs: %d, max WQEs: %d, max SRQ WQEs: %d\n",
                 dev_cap->max_cq_sz, dev_cap->max_qp_sz, dev_cap->max_srq_sz);
        mlx4_dbg(dev, "Local CA ACK delay: %d, max MTU: %d, port width cap: %d\n",
                 dev_cap->local_ca_ack_delay, 128 << dev_cap->port_cap[1].ib_mtu,
                 dev_cap->port_cap[1].max_port_width);
        mlx4_dbg(dev, "Max SQ desc size: %d, max SQ S/G: %d\n",
                 dev_cap->max_sq_desc_sz, dev_cap->max_sq_sg);
        mlx4_dbg(dev, "Max RQ desc size: %d, max RQ S/G: %d\n",
                 dev_cap->max_rq_desc_sz, dev_cap->max_rq_sg);
        mlx4_dbg(dev, "Max GSO size: %d\n", dev_cap->max_gso_sz);
        mlx4_dbg(dev, "Max counters: %d\n", dev_cap->max_counters);
        mlx4_dbg(dev, "Max RSS Table size: %d\n", dev_cap->max_rss_tbl_sz);
        mlx4_dbg(dev, "DMFS high rate steer QPn base: %d\n",
                 dev_cap->dmfs_high_rate_qpn_base);
        mlx4_dbg(dev, "DMFS high rate steer QPn range: %d\n",
                 dev_cap->dmfs_high_rate_qpn_range);

        if (dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT) {
                struct mlx4_rate_limit_caps *rl_caps = &dev_cap->rl_caps;

                mlx4_dbg(dev, "QP Rate-Limit: #rates %d, unit/val max %d/%d, min %d/%d\n",
                         rl_caps->num_rates, rl_caps->max_unit, rl_caps->max_val,
                         rl_caps->min_unit, rl_caps->min_val);
        }

        dump_dev_cap_flags(dev, dev_cap->flags);
        dump_dev_cap_flags2(dev, dev_cap->flags2);
}

int mlx4_QUERY_PORT(struct mlx4_dev *dev, int port, struct mlx4_port_cap *port_cap)
{
        struct mlx4_cmd_mailbox *mailbox;
        u32 *outbox;
        u8 field;
        u32 field32;
        int err;

        mailbox = mlx4_alloc_cmd_mailbox(dev);
        if (IS_ERR(mailbox))
                return PTR_ERR(mailbox);
        outbox = mailbox->buf;

        if (dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
                err = mlx4_cmd_box(dev, 0, mailbox->dma, 0, 0, MLX4_CMD_QUERY_DEV_CAP,
                                   MLX4_CMD_TIME_CLASS_A,
                                   MLX4_CMD_NATIVE);

                if (err)
                        goto out;

                MLX4_GET(field, outbox, QUERY_DEV_CAP_VL_PORT_OFFSET);
                port_cap->max_vl           = field >> 4;
                MLX4_GET(field, outbox, QUERY_DEV_CAP_MTU_WIDTH_OFFSET);
                port_cap->ib_mtu           = field >> 4;
                port_cap->max_port_width = field & 0xf;
                MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_GID_OFFSET);
                port_cap->max_gids         = 1 << (field & 0xf);
                MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_PKEY_OFFSET);
                port_cap->max_pkeys        = 1 << (field & 0xf);
        } else {
#define QUERY_PORT_SUPPORTED_TYPE_OFFSET        0x00
#define QUERY_PORT_MTU_OFFSET                   0x01
#define QUERY_PORT_ETH_MTU_OFFSET               0x02
#define QUERY_PORT_WIDTH_OFFSET                 0x06
#define QUERY_PORT_MAX_GID_PKEY_OFFSET          0x07
#define QUERY_PORT_MAX_MACVLAN_OFFSET           0x0a
#define QUERY_PORT_MAX_VL_OFFSET                0x0b
#define QUERY_PORT_MAC_OFFSET                   0x10
#define QUERY_PORT_TRANS_VENDOR_OFFSET          0x18
#define QUERY_PORT_WAVELENGTH_OFFSET            0x1c
#define QUERY_PORT_TRANS_CODE_OFFSET            0x20

                err = mlx4_cmd_box(dev, 0, mailbox->dma, port, 0, MLX4_CMD_QUERY_PORT,
                                   MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
                if (err)
                        goto out;

                MLX4_GET(field, outbox, QUERY_PORT_SUPPORTED_TYPE_OFFSET);
                port_cap->link_state = (field & 0x80) >> 7;
                port_cap->supported_port_types = field & 3;
                port_cap->suggested_type = (field >> 3) & 1;
                port_cap->default_sense = (field >> 4) & 1;
                port_cap->dmfs_optimized_state = (field >> 5) & 1;
                MLX4_GET(field, outbox, QUERY_PORT_MTU_OFFSET);
                port_cap->ib_mtu           = field & 0xf;
                MLX4_GET(field, outbox, QUERY_PORT_WIDTH_OFFSET);
                port_cap->max_port_width = field & 0xf;
                MLX4_GET(field, outbox, QUERY_PORT_MAX_GID_PKEY_OFFSET);
                port_cap->max_gids         = 1 << (field >> 4);
                port_cap->max_pkeys        = 1 << (field & 0xf);
                MLX4_GET(field, outbox, QUERY_PORT_MAX_VL_OFFSET);
                port_cap->max_vl           = field & 0xf;
                port_cap->max_tc_eth       = field >> 4;
                MLX4_GET(field, outbox, QUERY_PORT_MAX_MACVLAN_OFFSET);
                port_cap->log_max_macs  = field & 0xf;
                port_cap->log_max_vlans = field >> 4;
                MLX4_GET(port_cap->eth_mtu, outbox, QUERY_PORT_ETH_MTU_OFFSET);
                MLX4_GET(port_cap->def_mac, outbox, QUERY_PORT_MAC_OFFSET);
                MLX4_GET(field32, outbox, QUERY_PORT_TRANS_VENDOR_OFFSET);
                port_cap->trans_type = field32 >> 24;
                port_cap->vendor_oui = field32 & 0xffffff;
                MLX4_GET(port_cap->wavelength, outbox, QUERY_PORT_WAVELENGTH_OFFSET);
                MLX4_GET(port_cap->trans_code, outbox, QUERY_PORT_TRANS_CODE_OFFSET);
        }

out:
        mlx4_free_cmd_mailbox(dev, mailbox);
        return err;
}

#define DEV_CAP_EXT_2_FLAG_PFC_COUNTERS (1 << 28)
#define DEV_CAP_EXT_2_FLAG_VLAN_CONTROL (1 << 26)
#define DEV_CAP_EXT_2_FLAG_80_VFS       (1 << 21)
#define DEV_CAP_EXT_2_FLAG_FSM          (1 << 20)

int mlx4_QUERY_DEV_CAP_wrapper(struct mlx4_dev *dev, int slave,
                               struct mlx4_vhcr *vhcr,
                               struct mlx4_cmd_mailbox *inbox,
                               struct mlx4_cmd_mailbox *outbox,
                               struct mlx4_cmd_info *cmd)
{
        u64     flags;
        int     err = 0;
        u8      field;
        u16     field16;
        u32     bmme_flags, field32;
        int     real_port;
        int     slave_port;
        int     first_port;
        struct mlx4_active_ports actv_ports;

        err = mlx4_cmd_box(dev, 0, outbox->dma, 0, 0, MLX4_CMD_QUERY_DEV_CAP,
                           MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
        if (err)
                return err;

        disable_unsupported_roce_caps(outbox->buf);
        /* add port mng change event capability and disable mw type 1
         * unconditionally to slaves
         */
        MLX4_GET(flags, outbox->buf, QUERY_DEV_CAP_EXT_FLAGS_OFFSET);
        flags |= MLX4_DEV_CAP_FLAG_PORT_MNG_CHG_EV;
        flags &= ~MLX4_DEV_CAP_FLAG_MEM_WINDOW;
        actv_ports = mlx4_get_active_ports(dev, slave);
        first_port = find_first_bit(actv_ports.ports, dev->caps.num_ports);
        for (slave_port = 0, real_port = first_port;
             real_port < first_port +
             bitmap_weight(actv_ports.ports, dev->caps.num_ports);
             ++real_port, ++slave_port) {
                if (flags & (MLX4_DEV_CAP_FLAG_WOL_PORT1 << real_port))
                        flags |= MLX4_DEV_CAP_FLAG_WOL_PORT1 << slave_port;
                else
                        flags &= ~(MLX4_DEV_CAP_FLAG_WOL_PORT1 << slave_port);
        }
        for (; slave_port < dev->caps.num_ports; ++slave_port)
                flags &= ~(MLX4_DEV_CAP_FLAG_WOL_PORT1 << slave_port);

        /* Not exposing RSS IP fragments to guests */
        flags &= ~MLX4_DEV_CAP_FLAG_RSS_IP_FRAG;
        MLX4_PUT(outbox->buf, flags, QUERY_DEV_CAP_EXT_FLAGS_OFFSET);

        MLX4_GET(field, outbox->buf, QUERY_DEV_CAP_VL_PORT_OFFSET);
        field &= ~0x0F;
        field |= bitmap_weight(actv_ports.ports, dev->caps.num_ports) & 0x0F;
        MLX4_PUT(outbox->buf, field, QUERY_DEV_CAP_VL_PORT_OFFSET);

        /* For guests, disable timestamp */
        MLX4_GET(field, outbox->buf, QUERY_DEV_CAP_CQ_TS_SUPPORT_OFFSET);
        field &= 0x7f;
        MLX4_PUT(outbox->buf, field, QUERY_DEV_CAP_CQ_TS_SUPPORT_OFFSET);

        /* For guests, disable vxlan tunneling and QoS support */
        MLX4_GET(field, outbox->buf, QUERY_DEV_CAP_VXLAN);
        field &= 0xd7;
        MLX4_PUT(outbox->buf, field, QUERY_DEV_CAP_VXLAN);

        /* For guests, disable port BEACON */
        MLX4_GET(field, outbox->buf, QUERY_DEV_CAP_PORT_BEACON_OFFSET);
        field &= 0x7f;
        MLX4_PUT(outbox->buf, field, QUERY_DEV_CAP_PORT_BEACON_OFFSET);

        /* For guests, report Blueflame disabled */
        MLX4_GET(field, outbox->buf, QUERY_DEV_CAP_BF_OFFSET);
        field &= 0x7f;
        MLX4_PUT(outbox->buf, field, QUERY_DEV_CAP_BF_OFFSET);

        /* For guests, disable mw type 2 and port remap*/
        MLX4_GET(bmme_flags, outbox->buf, QUERY_DEV_CAP_BMME_FLAGS_OFFSET);
        bmme_flags &= ~MLX4_BMME_FLAG_TYPE_2_WIN;
        bmme_flags &= ~MLX4_FLAG_PORT_REMAP;
        MLX4_PUT(outbox->buf, bmme_flags, QUERY_DEV_CAP_BMME_FLAGS_OFFSET);

        /* turn off device-managed steering capability if not enabled */
        if (dev->caps.steering_mode != MLX4_STEERING_MODE_DEVICE_MANAGED) {
                MLX4_GET(field, outbox->buf,
                         QUERY_DEV_CAP_FLOW_STEERING_RANGE_EN_OFFSET);
                field &= 0x7f;
                MLX4_PUT(outbox->buf, field,
                         QUERY_DEV_CAP_FLOW_STEERING_RANGE_EN_OFFSET);
        }

        /* turn off ipoib managed steering for guests */
        MLX4_GET(field, outbox->buf, QUERY_DEV_CAP_FLOW_STEERING_IPOIB_OFFSET);
        field &= ~0x80;
        MLX4_PUT(outbox->buf, field, QUERY_DEV_CAP_FLOW_STEERING_IPOIB_OFFSET);

        /* turn off host side virt features (VST, FSM, etc) for guests */
        MLX4_GET(field32, outbox->buf, QUERY_DEV_CAP_EXT_2_FLAGS_OFFSET);
        field32 &= ~(DEV_CAP_EXT_2_FLAG_VLAN_CONTROL | DEV_CAP_EXT_2_FLAG_80_VFS |
                     DEV_CAP_EXT_2_FLAG_FSM | DEV_CAP_EXT_2_FLAG_PFC_COUNTERS);
        MLX4_PUT(outbox->buf, field32, QUERY_DEV_CAP_EXT_2_FLAGS_OFFSET);

        /* turn off QCN for guests */
        MLX4_GET(field, outbox->buf, QUERY_DEV_CAP_ECN_QCN_VER_OFFSET);
        field &= 0xfe;
        MLX4_PUT(outbox->buf, field, QUERY_DEV_CAP_ECN_QCN_VER_OFFSET);

        /* turn off QP max-rate limiting for guests */
        field16 = 0;
        MLX4_PUT(outbox->buf, field16, QUERY_DEV_CAP_QP_RATE_LIMIT_NUM_OFFSET);

        /* turn off QoS per VF support for guests */
        MLX4_GET(field, outbox->buf, QUERY_DEV_CAP_CQ_EQ_CACHE_LINE_STRIDE);
        field &= 0xef;
        MLX4_PUT(outbox->buf, field, QUERY_DEV_CAP_CQ_EQ_CACHE_LINE_STRIDE);

        /* turn off ignore FCS feature for guests */
        MLX4_GET(field, outbox->buf, QUERY_DEV_CAP_CONFIG_DEV_OFFSET);
        field &= 0xfb;
        MLX4_PUT(outbox->buf, field, QUERY_DEV_CAP_CONFIG_DEV_OFFSET);

        return 0;
}

static void disable_unsupported_roce_caps(void *buf)
{
        u32 flags;

        MLX4_GET(flags, buf, QUERY_DEV_CAP_EXT_FLAGS_OFFSET);
        flags &= ~(1UL << 31);
        MLX4_PUT(buf, flags, QUERY_DEV_CAP_EXT_FLAGS_OFFSET);
        MLX4_GET(flags, buf, QUERY_DEV_CAP_EXT_2_FLAGS_OFFSET);
        flags &= ~(1UL << 24);
        MLX4_PUT(buf, flags, QUERY_DEV_CAP_EXT_2_FLAGS_OFFSET);
        MLX4_GET(flags, buf, QUERY_DEV_CAP_BMME_FLAGS_OFFSET);
        flags &= ~(MLX4_FLAG_ROCE_V1_V2);
        MLX4_PUT(buf, flags, QUERY_DEV_CAP_BMME_FLAGS_OFFSET);
}

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,
                            struct mlx4_cmd_info *cmd)
{
        struct mlx4_priv *priv = mlx4_priv(dev);
        u64 def_mac;
        u8 port_type;
        u16 short_field;
        int err;
        int admin_link_state;
        int port = mlx4_slave_convert_port(dev, slave,
                                           vhcr->in_modifier & 0xFF);

#define MLX4_VF_PORT_NO_LINK_SENSE_MASK 0xE0
#define MLX4_PORT_LINK_UP_MASK          0x80
#define QUERY_PORT_CUR_MAX_PKEY_OFFSET  0x0c
#define QUERY_PORT_CUR_MAX_GID_OFFSET   0x0e

        if (port < 0)
                return -EINVAL;

        /* Protect against untrusted guests: enforce that this is the
         * QUERY_PORT general query.
         */
        if (vhcr->op_modifier || vhcr->in_modifier & ~0xFF)
                return -EINVAL;

        vhcr->in_modifier = port;

        err = mlx4_cmd_box(dev, 0, outbox->dma, vhcr->in_modifier, 0,
                           MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B,
                           MLX4_CMD_NATIVE);

        if (!err && dev->caps.function != slave) {
                def_mac = priv->mfunc.master.vf_oper[slave].vport[vhcr->in_modifier].state.mac;
                MLX4_PUT(outbox->buf, def_mac, QUERY_PORT_MAC_OFFSET);

                /* get port type - currently only eth is enabled */
                MLX4_GET(port_type, outbox->buf,
                         QUERY_PORT_SUPPORTED_TYPE_OFFSET);

                /* No link sensing allowed */
                port_type &= MLX4_VF_PORT_NO_LINK_SENSE_MASK;
                /* set port type to currently operating port type */
                port_type |= (dev->caps.port_type[vhcr->in_modifier] & 0x3);

                admin_link_state = priv->mfunc.master.vf_oper[slave].vport[vhcr->in_modifier].state.link_state;
                if (IFLA_VF_LINK_STATE_ENABLE == admin_link_state)
                        port_type |= MLX4_PORT_LINK_UP_MASK;
                else if (IFLA_VF_LINK_STATE_DISABLE == admin_link_state)
                        port_type &= ~MLX4_PORT_LINK_UP_MASK;
                else if (IFLA_VF_LINK_STATE_AUTO == admin_link_state && mlx4_is_bonded(dev)) {
                        int other_port = (port == 1) ? 2 : 1;
                        struct mlx4_port_cap port_cap;

                        err = mlx4_QUERY_PORT(dev, other_port, &port_cap);
                        if (err)
                                goto out;
                        port_type |= (port_cap.link_state << 7);
                }

                MLX4_PUT(outbox->buf, port_type,
                         QUERY_PORT_SUPPORTED_TYPE_OFFSET);

                if (dev->caps.port_type[vhcr->in_modifier] == MLX4_PORT_TYPE_ETH)
                        short_field = mlx4_get_slave_num_gids(dev, slave, port);
                else
                        short_field = 1; /* slave max gids */
                MLX4_PUT(outbox->buf, short_field,
                         QUERY_PORT_CUR_MAX_GID_OFFSET);

                short_field = dev->caps.pkey_table_len[vhcr->in_modifier];
                MLX4_PUT(outbox->buf, short_field,
                         QUERY_PORT_CUR_MAX_PKEY_OFFSET);
        }
out:
        return err;
}

int mlx4_get_slave_pkey_gid_tbl_len(struct mlx4_dev *dev, u8 port,
                                    int *gid_tbl_len, int *pkey_tbl_len)
{
        struct mlx4_cmd_mailbox *mailbox;
        u32                     *outbox;
        u16                     field;
        int                     err;

        mailbox = mlx4_alloc_cmd_mailbox(dev);
        if (IS_ERR(mailbox))
                return PTR_ERR(mailbox);

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

        outbox = mailbox->buf;

        MLX4_GET(field, outbox, QUERY_PORT_CUR_MAX_GID_OFFSET);
        *gid_tbl_len = field;

        MLX4_GET(field, outbox, QUERY_PORT_CUR_MAX_PKEY_OFFSET);
        *pkey_tbl_len = field;

out:
        mlx4_free_cmd_mailbox(dev, mailbox);
        return err;
}
EXPORT_SYMBOL(mlx4_get_slave_pkey_gid_tbl_len);

int mlx4_map_cmd(struct mlx4_dev *dev, u16 op, struct mlx4_icm *icm, u64 virt)
{
        struct mlx4_cmd_mailbox *mailbox;
        struct mlx4_icm_iter iter;
        __be64 *pages;
        int lg;
        int nent = 0;
        int i;
        int err = 0;
        int ts = 0, tc = 0;

        mailbox = mlx4_alloc_cmd_mailbox(dev);
        if (IS_ERR(mailbox))
                return PTR_ERR(mailbox);
        pages = mailbox->buf;

        for (mlx4_icm_first(icm, &iter);
             !mlx4_icm_last(&iter);
             mlx4_icm_next(&iter)) {
                /*
                 * We have to pass pages that are aligned to their
                 * size, so find the least significant 1 in the
                 * address or size and use that as our log2 size.
                 */
                lg = ffs(mlx4_icm_addr(&iter) | mlx4_icm_size(&iter)) - 1;
                if (lg < MLX4_ICM_PAGE_SHIFT) {
                        mlx4_warn(dev, "Got FW area not aligned to %d (%llx/%lx)\n",
                                  MLX4_ICM_PAGE_SIZE,
                                  (unsigned long long) mlx4_icm_addr(&iter),
                                  mlx4_icm_size(&iter));
                        err = -EINVAL;
                        goto out;
                }

                for (i = 0; i < mlx4_icm_size(&iter) >> lg; ++i) {
                        if (virt != -1) {
                                pages[nent * 2] = cpu_to_be64(virt);
                                virt += 1ULL << lg;
                        }

                        pages[nent * 2 + 1] =
                                cpu_to_be64((mlx4_icm_addr(&iter) + (i << lg)) |
                                            (lg - MLX4_ICM_PAGE_SHIFT));
                        ts += 1 << (lg - 10);
                        ++tc;

                        if (++nent == MLX4_MAILBOX_SIZE / 16) {
                                err = mlx4_cmd(dev, mailbox->dma, nent, 0, op,
                                                MLX4_CMD_TIME_CLASS_B,
                                                MLX4_CMD_NATIVE);
                                if (err)
                                        goto out;
                                nent = 0;
                        }
                }
        }

        if (nent)
                err = mlx4_cmd(dev, mailbox->dma, nent, 0, op,
                               MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
        if (err)
                goto out;

        switch (op) {
        case MLX4_CMD_MAP_FA:
                mlx4_dbg(dev, "Mapped %d chunks/%d KB for FW\n", tc, ts);
                break;
        case MLX4_CMD_MAP_ICM_AUX:
                mlx4_dbg(dev, "Mapped %d chunks/%d KB for ICM aux\n", tc, ts);
                break;
        case MLX4_CMD_MAP_ICM:
                mlx4_dbg(dev, "Mapped %d chunks/%d KB at %llx for ICM\n",
                         tc, ts, (unsigned long long) virt - (ts << 10));
                break;
        }

out:
        mlx4_free_cmd_mailbox(dev, mailbox);
        return err;
}

int mlx4_MAP_FA(struct mlx4_dev *dev, struct mlx4_icm *icm)
{
        return mlx4_map_cmd(dev, MLX4_CMD_MAP_FA, icm, -1);
}

int mlx4_UNMAP_FA(struct mlx4_dev *dev)
{
        return mlx4_cmd(dev, 0, 0, 0, MLX4_CMD_UNMAP_FA,
                        MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
}


int mlx4_RUN_FW(struct mlx4_dev *dev)
{
        return mlx4_cmd(dev, 0, 0, 0, MLX4_CMD_RUN_FW,
                        MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
}

int mlx4_QUERY_FW(struct mlx4_dev *dev)
{
        struct mlx4_fw  *fw  = &mlx4_priv(dev)->fw;
        struct mlx4_cmd *cmd = &mlx4_priv(dev)->cmd;
        struct mlx4_cmd_mailbox *mailbox;
        u32 *outbox;
        int err = 0;
        u64 fw_ver;
        u16 cmd_if_rev;
        u8 lg;

#define QUERY_FW_OUT_SIZE             0x100
#define QUERY_FW_VER_OFFSET            0x00
#define QUERY_FW_PPF_ID                0x09
#define QUERY_FW_CMD_IF_REV_OFFSET     0x0a
#define QUERY_FW_MAX_CMD_OFFSET        0x0f
#define QUERY_FW_ERR_START_OFFSET      0x30
#define QUERY_FW_ERR_SIZE_OFFSET       0x38
#define QUERY_FW_ERR_BAR_OFFSET        0x3c

#define QUERY_FW_SIZE_OFFSET           0x00
#define QUERY_FW_CLR_INT_BASE_OFFSET   0x20
#define QUERY_FW_CLR_INT_BAR_OFFSET    0x28

#define QUERY_FW_COMM_BASE_OFFSET      0x40
#define QUERY_FW_COMM_BAR_OFFSET       0x48

#define QUERY_FW_CLOCK_OFFSET          0x50
#define QUERY_FW_CLOCK_BAR             0x58

        mailbox = mlx4_alloc_cmd_mailbox(dev);
        if (IS_ERR(mailbox))
                return PTR_ERR(mailbox);
        outbox = mailbox->buf;

        err = mlx4_cmd_box(dev, 0, mailbox->dma, 0, 0, MLX4_CMD_QUERY_FW,
                            MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
        if (err)
                goto out;

        MLX4_GET(fw_ver, outbox, QUERY_FW_VER_OFFSET);
        /*
         * FW subminor version is at more significant bits than minor
         * version, so swap here.
         */
        dev->caps.fw_ver = (fw_ver & 0xffff00000000ull) |
                ((fw_ver & 0xffff0000ull) >> 16) |
                ((fw_ver & 0x0000ffffull) << 16);

        MLX4_GET(lg, outbox, QUERY_FW_PPF_ID);
        dev->caps.function = lg;

        if (mlx4_is_slave(dev))
                goto out;


        MLX4_GET(cmd_if_rev, outbox, QUERY_FW_CMD_IF_REV_OFFSET);
        if (cmd_if_rev < MLX4_COMMAND_INTERFACE_MIN_REV ||
            cmd_if_rev > MLX4_COMMAND_INTERFACE_MAX_REV) {
                mlx4_err(dev, "Installed FW has unsupported command interface revision %d\n",
                         cmd_if_rev);
                mlx4_err(dev, "(Installed FW version is %d.%d.%03d)\n",
                         (int) (dev->caps.fw_ver >> 32),
                         (int) (dev->caps.fw_ver >> 16) & 0xffff,
                         (int) dev->caps.fw_ver & 0xffff);
                mlx4_err(dev, "This driver version supports only revisions %d to %d\n",
                         MLX4_COMMAND_INTERFACE_MIN_REV, MLX4_COMMAND_INTERFACE_MAX_REV);
                err = -ENODEV;
                goto out;
        }

        if (cmd_if_rev < MLX4_COMMAND_INTERFACE_NEW_PORT_CMDS)
                dev->flags |= MLX4_FLAG_OLD_PORT_CMDS;

        MLX4_GET(lg, outbox, QUERY_FW_MAX_CMD_OFFSET);
        cmd->max_cmds = 1 << lg;

        mlx4_dbg(dev, "FW version %d.%d.%03d (cmd intf rev %d), max commands %d\n",
                 (int) (dev->caps.fw_ver >> 32),
                 (int) (dev->caps.fw_ver >> 16) & 0xffff,
                 (int) dev->caps.fw_ver & 0xffff,
                 cmd_if_rev, cmd->max_cmds);

        MLX4_GET(fw->catas_offset, outbox, QUERY_FW_ERR_START_OFFSET);
        MLX4_GET(fw->catas_size,   outbox, QUERY_FW_ERR_SIZE_OFFSET);
        MLX4_GET(fw->catas_bar,    outbox, QUERY_FW_ERR_BAR_OFFSET);
        fw->catas_bar = (fw->catas_bar >> 6) * 2;

        mlx4_dbg(dev, "Catastrophic error buffer at 0x%llx, size 0x%x, BAR %d\n",
                 (unsigned long long) fw->catas_offset, fw->catas_size, fw->catas_bar);

        MLX4_GET(fw->fw_pages,     outbox, QUERY_FW_SIZE_OFFSET);
        MLX4_GET(fw->clr_int_base, outbox, QUERY_FW_CLR_INT_BASE_OFFSET);
        MLX4_GET(fw->clr_int_bar,  outbox, QUERY_FW_CLR_INT_BAR_OFFSET);
        fw->clr_int_bar = (fw->clr_int_bar >> 6) * 2;

        MLX4_GET(fw->comm_base, outbox, QUERY_FW_COMM_BASE_OFFSET);
        MLX4_GET(fw->comm_bar,  outbox, QUERY_FW_COMM_BAR_OFFSET);
        fw->comm_bar = (fw->comm_bar >> 6) * 2;
        mlx4_dbg(dev, "Communication vector bar:%d offset:0x%llx\n",
                 fw->comm_bar, fw->comm_base);
        mlx4_dbg(dev, "FW size %d KB\n", fw->fw_pages >> 2);

        MLX4_GET(fw->clock_offset, outbox, QUERY_FW_CLOCK_OFFSET);
        MLX4_GET(fw->clock_bar,    outbox, QUERY_FW_CLOCK_BAR);
        fw->clock_bar = (fw->clock_bar >> 6) * 2;
        mlx4_dbg(dev, "Internal clock bar:%d offset:0x%llx\n",
                 fw->clock_bar, fw->clock_offset);

        /*
         * Round up number of system pages needed in case
         * MLX4_ICM_PAGE_SIZE < PAGE_SIZE.
         */
        fw->fw_pages =
                ALIGN(fw->fw_pages, PAGE_SIZE / MLX4_ICM_PAGE_SIZE) >>
                (PAGE_SHIFT - MLX4_ICM_PAGE_SHIFT);

        mlx4_dbg(dev, "Clear int @ %llx, BAR %d\n",
                 (unsigned long long) fw->clr_int_base, fw->clr_int_bar);

out:
        mlx4_free_cmd_mailbox(dev, mailbox);
        return err;
}

int mlx4_QUERY_FW_wrapper(struct mlx4_dev *dev, int slave,
                          struct mlx4_vhcr *vhcr,
                          struct mlx4_cmd_mailbox *inbox,
                          struct mlx4_cmd_mailbox *outbox,
                          struct mlx4_cmd_info *cmd)
{
        u8 *outbuf;
        int err;

        outbuf = outbox->buf;
        err = mlx4_cmd_box(dev, 0, outbox->dma, 0, 0, MLX4_CMD_QUERY_FW,
                            MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
        if (err)
                return err;

        /* for slaves, set pci PPF ID to invalid and zero out everything
         * else except FW version */
        outbuf[0] = outbuf[1] = 0;
        memset(&outbuf[8], 0, QUERY_FW_OUT_SIZE - 8);
        outbuf[QUERY_FW_PPF_ID] = MLX4_INVALID_SLAVE_ID;

        return 0;
}

static void get_board_id(void *vsd, char *board_id)
{
        int i;

#define VSD_OFFSET_SIG1         0x00
#define VSD_OFFSET_SIG2         0xde
#define VSD_OFFSET_MLX_BOARD_ID 0xd0
#define VSD_OFFSET_TS_BOARD_ID  0x20

#define VSD_SIGNATURE_TOPSPIN   0x5ad

        memset(board_id, 0, MLX4_BOARD_ID_LEN);

        if (be16_to_cpup(vsd + VSD_OFFSET_SIG1) == VSD_SIGNATURE_TOPSPIN &&
            be16_to_cpup(vsd + VSD_OFFSET_SIG2) == VSD_SIGNATURE_TOPSPIN) {
                strlcpy(board_id, vsd + VSD_OFFSET_TS_BOARD_ID, MLX4_BOARD_ID_LEN);
        } else {
                /*
                 * The board ID is a string but the firmware byte
                 * swaps each 4-byte word before passing it back to
                 * us.  Therefore we need to swab it before printing.
                 */
                u32 *bid_u32 = (u32 *)board_id;

                for (i = 0; i < 4; ++i) {
                        u32 *addr;
                        u32 val;

                        addr = (u32 *) (vsd + VSD_OFFSET_MLX_BOARD_ID + i * 4);
                        val = get_unaligned(addr);
                        val = swab32(val);
                        put_unaligned(val, &bid_u32[i]);
                }
        }
}

int mlx4_QUERY_ADAPTER(struct mlx4_dev *dev, struct mlx4_adapter *adapter)
{
        struct mlx4_cmd_mailbox *mailbox;
        u32 *outbox;
        int err;

#define QUERY_ADAPTER_OUT_SIZE             0x100
#define QUERY_ADAPTER_INTA_PIN_OFFSET      0x10
#define QUERY_ADAPTER_VSD_OFFSET           0x20

        mailbox = mlx4_alloc_cmd_mailbox(dev);
        if (IS_ERR(mailbox))
                return PTR_ERR(mailbox);
        outbox = mailbox->buf;

        err = mlx4_cmd_box(dev, 0, mailbox->dma, 0, 0, MLX4_CMD_QUERY_ADAPTER,
                           MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
        if (err)
                goto out;

        MLX4_GET(adapter->inta_pin, outbox,    QUERY_ADAPTER_INTA_PIN_OFFSET);

        get_board_id(outbox + QUERY_ADAPTER_VSD_OFFSET / 4,
                     adapter->board_id);

out:
        mlx4_free_cmd_mailbox(dev, mailbox);
        return err;
}

int mlx4_INIT_HCA(struct mlx4_dev *dev, struct mlx4_init_hca_param *param)
{
        struct mlx4_cmd_mailbox *mailbox;
        __be32 *inbox;
        int err;
        static const u8 a0_dmfs_hw_steering[] =  {
                [MLX4_STEERING_DMFS_A0_DEFAULT]         = 0,
                [MLX4_STEERING_DMFS_A0_DYNAMIC]         = 1,
                [MLX4_STEERING_DMFS_A0_STATIC]          = 2,
                [MLX4_STEERING_DMFS_A0_DISABLE]         = 3
        };

#define INIT_HCA_IN_SIZE                 0x200
#define INIT_HCA_VERSION_OFFSET          0x000
#define  INIT_HCA_VERSION                2
#define INIT_HCA_VXLAN_OFFSET            0x0c
#define INIT_HCA_CACHELINE_SZ_OFFSET     0x0e
#define INIT_HCA_FLAGS_OFFSET            0x014
#define INIT_HCA_RECOVERABLE_ERROR_EVENT_OFFSET 0x018
#define INIT_HCA_QPC_OFFSET              0x020
#define  INIT_HCA_QPC_BASE_OFFSET        (INIT_HCA_QPC_OFFSET + 0x10)
#define  INIT_HCA_LOG_QP_OFFSET          (INIT_HCA_QPC_OFFSET + 0x17)
#define  INIT_HCA_SRQC_BASE_OFFSET       (INIT_HCA_QPC_OFFSET + 0x28)
#define  INIT_HCA_LOG_SRQ_OFFSET         (INIT_HCA_QPC_OFFSET + 0x2f)
#define  INIT_HCA_CQC_BASE_OFFSET        (INIT_HCA_QPC_OFFSET + 0x30)
#define  INIT_HCA_LOG_CQ_OFFSET          (INIT_HCA_QPC_OFFSET + 0x37)
#define  INIT_HCA_EQE_CQE_OFFSETS        (INIT_HCA_QPC_OFFSET + 0x38)
#define  INIT_HCA_EQE_CQE_STRIDE_OFFSET  (INIT_HCA_QPC_OFFSET + 0x3b)
#define  INIT_HCA_ALTC_BASE_OFFSET       (INIT_HCA_QPC_OFFSET + 0x40)
#define  INIT_HCA_AUXC_BASE_OFFSET       (INIT_HCA_QPC_OFFSET + 0x50)
#define  INIT_HCA_EQC_BASE_OFFSET        (INIT_HCA_QPC_OFFSET + 0x60)
#define  INIT_HCA_LOG_EQ_OFFSET          (INIT_HCA_QPC_OFFSET + 0x67)
#define INIT_HCA_NUM_SYS_EQS_OFFSET     (INIT_HCA_QPC_OFFSET + 0x6a)
#define  INIT_HCA_RDMARC_BASE_OFFSET     (INIT_HCA_QPC_OFFSET + 0x70)
#define  INIT_HCA_LOG_RD_OFFSET          (INIT_HCA_QPC_OFFSET + 0x77)
#define INIT_HCA_MCAST_OFFSET            0x0c0
#define  INIT_HCA_MC_BASE_OFFSET         (INIT_HCA_MCAST_OFFSET + 0x00)
#define  INIT_HCA_LOG_MC_ENTRY_SZ_OFFSET (INIT_HCA_MCAST_OFFSET + 0x12)
#define  INIT_HCA_LOG_MC_HASH_SZ_OFFSET  (INIT_HCA_MCAST_OFFSET + 0x16)
#define  INIT_HCA_UC_STEERING_OFFSET     (INIT_HCA_MCAST_OFFSET + 0x18)
#define  INIT_HCA_LOG_MC_TABLE_SZ_OFFSET (INIT_HCA_MCAST_OFFSET + 0x1b)
#define  INIT_HCA_DEVICE_MANAGED_FLOW_STEERING_EN       0x6
#define  INIT_HCA_DRIVER_VERSION_OFFSET   0x140
#define  INIT_HCA_DRIVER_VERSION_SZ       0x40
#define  INIT_HCA_FS_PARAM_OFFSET         0x1d0
#define  INIT_HCA_FS_BASE_OFFSET          (INIT_HCA_FS_PARAM_OFFSET + 0x00)
#define  INIT_HCA_FS_LOG_ENTRY_SZ_OFFSET  (INIT_HCA_FS_PARAM_OFFSET + 0x12)
#define  INIT_HCA_FS_A0_OFFSET            (INIT_HCA_FS_PARAM_OFFSET + 0x18)
#define  INIT_HCA_FS_LOG_TABLE_SZ_OFFSET  (INIT_HCA_FS_PARAM_OFFSET + 0x1b)
#define  INIT_HCA_FS_ETH_BITS_OFFSET      (INIT_HCA_FS_PARAM_OFFSET + 0x21)
#define  INIT_HCA_FS_ETH_NUM_ADDRS_OFFSET (INIT_HCA_FS_PARAM_OFFSET + 0x22)
#define  INIT_HCA_FS_IB_BITS_OFFSET       (INIT_HCA_FS_PARAM_OFFSET + 0x25)
#define  INIT_HCA_FS_IB_NUM_ADDRS_OFFSET  (INIT_HCA_FS_PARAM_OFFSET + 0x26)
#define INIT_HCA_TPT_OFFSET              0x0f0
#define  INIT_HCA_DMPT_BASE_OFFSET       (INIT_HCA_TPT_OFFSET + 0x00)
#define  INIT_HCA_TPT_MW_OFFSET          (INIT_HCA_TPT_OFFSET + 0x08)
#define  INIT_HCA_LOG_MPT_SZ_OFFSET      (INIT_HCA_TPT_OFFSET + 0x0b)
#define  INIT_HCA_MTT_BASE_OFFSET        (INIT_HCA_TPT_OFFSET + 0x10)
#define  INIT_HCA_CMPT_BASE_OFFSET       (INIT_HCA_TPT_OFFSET + 0x18)
#define INIT_HCA_UAR_OFFSET              0x120
#define  INIT_HCA_LOG_UAR_SZ_OFFSET      (INIT_HCA_UAR_OFFSET + 0x0a)
#define  INIT_HCA_UAR_PAGE_SZ_OFFSET     (INIT_HCA_UAR_OFFSET + 0x0b)

        mailbox = mlx4_alloc_cmd_mailbox(dev);
        if (IS_ERR(mailbox))
                return PTR_ERR(mailbox);
        inbox = mailbox->buf;

        *((u8 *) mailbox->buf + INIT_HCA_VERSION_OFFSET) = INIT_HCA_VERSION;

        *((u8 *) mailbox->buf + INIT_HCA_CACHELINE_SZ_OFFSET) =
                ((ilog2(cache_line_size()) - 4) << 5) | (1 << 4);

#if defined(__LITTLE_ENDIAN)
        *(inbox + INIT_HCA_FLAGS_OFFSET / 4) &= ~cpu_to_be32(1 << 1);
#elif defined(__BIG_ENDIAN)
        *(inbox + INIT_HCA_FLAGS_OFFSET / 4) |= cpu_to_be32(1 << 1);
#else
#error Host endianness not defined
#endif
        /* Check port for UD address vector: */
        *(inbox + INIT_HCA_FLAGS_OFFSET / 4) |= cpu_to_be32(1);

        /* Enable IPoIB checksumming if we can: */
        if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM)
                *(inbox + INIT_HCA_FLAGS_OFFSET / 4) |= cpu_to_be32(1 << 3);

        /* Enable QoS support if module parameter set */
        if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG && enable_qos)
                *(inbox + INIT_HCA_FLAGS_OFFSET / 4) |= cpu_to_be32(1 << 2);

        /* enable counters */
        if (dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS)
                *(inbox + INIT_HCA_FLAGS_OFFSET / 4) |= cpu_to_be32(1 << 4);

        /* Enable RSS spread to fragmented IP packets when supported */
        if (dev->caps.flags & MLX4_DEV_CAP_FLAG_RSS_IP_FRAG)
                *(inbox + INIT_HCA_FLAGS_OFFSET / 4) |= cpu_to_be32(1 << 13);

        /* CX3 is capable of extending CQEs/EQEs from 32 to 64 bytes */
        if (dev->caps.flags & MLX4_DEV_CAP_FLAG_64B_EQE) {
                *(inbox + INIT_HCA_EQE_CQE_OFFSETS / 4) |= cpu_to_be32(1 << 29);
                dev->caps.eqe_size   = 64;
                dev->caps.eqe_factor = 1;
        } else {
                dev->caps.eqe_size   = 32;
                dev->caps.eqe_factor = 0;
        }

        if (dev->caps.flags & MLX4_DEV_CAP_FLAG_64B_CQE) {
                *(inbox + INIT_HCA_EQE_CQE_OFFSETS / 4) |= cpu_to_be32(1 << 30);
                dev->caps.cqe_size   = 64;
                dev->caps.userspace_caps |= MLX4_USER_DEV_CAP_LARGE_CQE;
        } else {
                dev->caps.cqe_size   = 32;
        }

        /* CX3 is capable of extending CQEs\EQEs to strides larger than 64B */
        if ((dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_EQE_STRIDE) &&
            (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_CQE_STRIDE)) {
                dev->caps.eqe_size = cache_line_size();
                dev->caps.cqe_size = cache_line_size();
                dev->caps.eqe_factor = 0;
                MLX4_PUT(inbox, (u8)((ilog2(dev->caps.eqe_size) - 5) << 4 |
                                      (ilog2(dev->caps.eqe_size) - 5)),
                         INIT_HCA_EQE_CQE_STRIDE_OFFSET);

                /* User still need to know to support CQE > 32B */
                dev->caps.userspace_caps |= MLX4_USER_DEV_CAP_LARGE_CQE;
        }

        if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RECOVERABLE_ERROR_EVENT)
                *(inbox + INIT_HCA_RECOVERABLE_ERROR_EVENT_OFFSET / 4) |= cpu_to_be32(1 << 31);

        if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DRIVER_VERSION_TO_FW) {
                u8 *dst = (u8 *)(inbox + INIT_HCA_DRIVER_VERSION_OFFSET / 4);

                strncpy(dst, DRV_NAME_FOR_FW, INIT_HCA_DRIVER_VERSION_SZ - 1);
                mlx4_dbg(dev, "Reporting Driver Version to FW: %s\n", dst);
        }

        /* QPC/EEC/CQC/EQC/RDMARC attributes */

        MLX4_PUT(inbox, param->qpc_base,      INIT_HCA_QPC_BASE_OFFSET);
        MLX4_PUT(inbox, param->log_num_qps,   INIT_HCA_LOG_QP_OFFSET);
        MLX4_PUT(inbox, param->srqc_base,     INIT_HCA_SRQC_BASE_OFFSET);
        MLX4_PUT(inbox, param->log_num_srqs,  INIT_HCA_LOG_SRQ_OFFSET);
        MLX4_PUT(inbox, param->cqc_base,      INIT_HCA_CQC_BASE_OFFSET);
        MLX4_PUT(inbox, param->log_num_cqs,   INIT_HCA_LOG_CQ_OFFSET);
        MLX4_PUT(inbox, param->altc_base,     INIT_HCA_ALTC_BASE_OFFSET);
        MLX4_PUT(inbox, param->auxc_base,     INIT_HCA_AUXC_BASE_OFFSET);
        MLX4_PUT(inbox, param->eqc_base,      INIT_HCA_EQC_BASE_OFFSET);
        MLX4_PUT(inbox, param->log_num_eqs,   INIT_HCA_LOG_EQ_OFFSET);
        MLX4_PUT(inbox, param->num_sys_eqs,   INIT_HCA_NUM_SYS_EQS_OFFSET);
        MLX4_PUT(inbox, param->rdmarc_base,   INIT_HCA_RDMARC_BASE_OFFSET);
        MLX4_PUT(inbox, param->log_rd_per_qp, INIT_HCA_LOG_RD_OFFSET);

        /* steering attributes */
        if (dev->caps.steering_mode ==
            MLX4_STEERING_MODE_DEVICE_MANAGED) {
                *(inbox + INIT_HCA_FLAGS_OFFSET / 4) |=
                        cpu_to_be32(1 <<
                                    INIT_HCA_DEVICE_MANAGED_FLOW_STEERING_EN);

                MLX4_PUT(inbox, param->mc_base, INIT_HCA_FS_BASE_OFFSET);
                MLX4_PUT(inbox, param->log_mc_entry_sz,
                         INIT_HCA_FS_LOG_ENTRY_SZ_OFFSET);
                MLX4_PUT(inbox, param->log_mc_table_sz,
                         INIT_HCA_FS_LOG_TABLE_SZ_OFFSET);
                /* Enable Ethernet flow steering
                 * with udp unicast and tcp unicast
                 */
                if (dev->caps.dmfs_high_steer_mode !=
                    MLX4_STEERING_DMFS_A0_STATIC)

                        MLX4_PUT(inbox,
                                 (u8)(MLX4_FS_UDP_UC_EN | MLX4_FS_TCP_UC_EN),
                                 INIT_HCA_FS_ETH_BITS_OFFSET);
                MLX4_PUT(inbox, (u16) MLX4_FS_NUM_OF_L2_ADDR,
                         INIT_HCA_FS_ETH_NUM_ADDRS_OFFSET);
                /* Enable IPoIB flow steering
                 * with udp unicast and tcp unicast
                 */
                MLX4_PUT(inbox, (u8) (MLX4_FS_UDP_UC_EN | MLX4_FS_TCP_UC_EN),
                         INIT_HCA_FS_IB_BITS_OFFSET);
                MLX4_PUT(inbox, (u16) MLX4_FS_NUM_OF_L2_ADDR,
                         INIT_HCA_FS_IB_NUM_ADDRS_OFFSET);

                if (dev->caps.dmfs_high_steer_mode !=
                    MLX4_STEERING_DMFS_A0_NOT_SUPPORTED)
                        MLX4_PUT(inbox,
                                 ((u8)(a0_dmfs_hw_steering[dev->caps.dmfs_high_steer_mode]
                                       << 6)),
                                 INIT_HCA_FS_A0_OFFSET);
        } else {
                MLX4_PUT(inbox, param->mc_base, INIT_HCA_MC_BASE_OFFSET);
                MLX4_PUT(inbox, param->log_mc_entry_sz,
                         INIT_HCA_LOG_MC_ENTRY_SZ_OFFSET);
                MLX4_PUT(inbox, param->log_mc_hash_sz,
                         INIT_HCA_LOG_MC_HASH_SZ_OFFSET);
                MLX4_PUT(inbox, param->log_mc_table_sz,
                         INIT_HCA_LOG_MC_TABLE_SZ_OFFSET);
                if (dev->caps.steering_mode == MLX4_STEERING_MODE_B0)
                        MLX4_PUT(inbox, (u8) (1 << 3),
                                 INIT_HCA_UC_STEERING_OFFSET);
        }

        /* TPT attributes */

        MLX4_PUT(inbox, param->dmpt_base,  INIT_HCA_DMPT_BASE_OFFSET);
        MLX4_PUT(inbox, param->mw_enabled, INIT_HCA_TPT_MW_OFFSET);
        MLX4_PUT(inbox, param->log_mpt_sz, INIT_HCA_LOG_MPT_SZ_OFFSET);
        MLX4_PUT(inbox, param->mtt_base,   INIT_HCA_MTT_BASE_OFFSET);
        MLX4_PUT(inbox, param->cmpt_base,  INIT_HCA_CMPT_BASE_OFFSET);

        /* UAR attributes */

        MLX4_PUT(inbox, param->uar_page_sz,     INIT_HCA_UAR_PAGE_SZ_OFFSET);
        MLX4_PUT(inbox, param->log_uar_sz,      INIT_HCA_LOG_UAR_SZ_OFFSET);

        /* set parser VXLAN attributes */
        if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_VXLAN_OFFLOADS) {
                u8 parser_params = 0;
                MLX4_PUT(inbox, parser_params,  INIT_HCA_VXLAN_OFFSET);
        }

        err = mlx4_cmd(dev, mailbox->dma, 0, 0, MLX4_CMD_INIT_HCA,
                       MLX4_CMD_TIME_CLASS_C, MLX4_CMD_NATIVE);

        if (err)
                mlx4_err(dev, "INIT_HCA returns %d\n", err);

        mlx4_free_cmd_mailbox(dev, mailbox);
        return err;
}

int mlx4_QUERY_HCA(struct mlx4_dev *dev,
                   struct mlx4_init_hca_param *param)
{
        struct mlx4_cmd_mailbox *mailbox;
        __be32 *outbox;
        u64 qword_field;
        u32 dword_field;
        u16 word_field;
        u8 byte_field;
        int err;
        static const u8 a0_dmfs_query_hw_steering[] =  {
                [0] = MLX4_STEERING_DMFS_A0_DEFAULT,
                [1] = MLX4_STEERING_DMFS_A0_DYNAMIC,
                [2] = MLX4_STEERING_DMFS_A0_STATIC,
                [3] = MLX4_STEERING_DMFS_A0_DISABLE
        };

#define QUERY_HCA_GLOBAL_CAPS_OFFSET    0x04
#define QUERY_HCA_CORE_CLOCK_OFFSET     0x0c

        mailbox = mlx4_alloc_cmd_mailbox(dev);
        if (IS_ERR(mailbox))
                return PTR_ERR(mailbox);
        outbox = mailbox->buf;

        err = mlx4_cmd_box(dev, 0, mailbox->dma, 0, 0,
                           MLX4_CMD_QUERY_HCA,
                           MLX4_CMD_TIME_CLASS_B,
                           !mlx4_is_slave(dev));
        if (err)
                goto out;

        MLX4_GET(param->global_caps, outbox, QUERY_HCA_GLOBAL_CAPS_OFFSET);
        MLX4_GET(param->hca_core_clock, outbox, QUERY_HCA_CORE_CLOCK_OFFSET);

        /* QPC/EEC/CQC/EQC/RDMARC attributes */

        MLX4_GET(qword_field, outbox, INIT_HCA_QPC_BASE_OFFSET);
        param->qpc_base = qword_field & ~((u64)0x1f);
        MLX4_GET(byte_field, outbox, INIT_HCA_LOG_QP_OFFSET);
        param->log_num_qps = byte_field & 0x1f;
        MLX4_GET(qword_field, outbox, INIT_HCA_SRQC_BASE_OFFSET);
        param->srqc_base = qword_field & ~((u64)0x1f);
        MLX4_GET(byte_field, outbox, INIT_HCA_LOG_SRQ_OFFSET);
        param->log_num_srqs = byte_field & 0x1f;
        MLX4_GET(qword_field, outbox, INIT_HCA_CQC_BASE_OFFSET);
        param->cqc_base = qword_field & ~((u64)0x1f);
        MLX4_GET(byte_field, outbox, INIT_HCA_LOG_CQ_OFFSET);
        param->log_num_cqs = byte_field & 0x1f;
        MLX4_GET(qword_field, outbox, INIT_HCA_ALTC_BASE_OFFSET);
        param->altc_base = qword_field;
        MLX4_GET(qword_field, outbox, INIT_HCA_AUXC_BASE_OFFSET);
        param->auxc_base = qword_field;
        MLX4_GET(qword_field, outbox, INIT_HCA_EQC_BASE_OFFSET);
        param->eqc_base = qword_field & ~((u64)0x1f);
        MLX4_GET(byte_field, outbox, INIT_HCA_LOG_EQ_OFFSET);
        param->log_num_eqs = byte_field & 0x1f;
        MLX4_GET(word_field, outbox, INIT_HCA_NUM_SYS_EQS_OFFSET);
        param->num_sys_eqs = word_field & 0xfff;
        MLX4_GET(qword_field, outbox, INIT_HCA_RDMARC_BASE_OFFSET);
        param->rdmarc_base = qword_field & ~((u64)0x1f);
        MLX4_GET(byte_field, outbox, INIT_HCA_LOG_RD_OFFSET);
        param->log_rd_per_qp = byte_field & 0x7;

        MLX4_GET(dword_field, outbox, INIT_HCA_FLAGS_OFFSET);
        if (dword_field & (1 << INIT_HCA_DEVICE_MANAGED_FLOW_STEERING_EN)) {
                param->steering_mode = MLX4_STEERING_MODE_DEVICE_MANAGED;
        } else {
                MLX4_GET(byte_field, outbox, INIT_HCA_UC_STEERING_OFFSET);
                if (byte_field & 0x8)
                        param->steering_mode = MLX4_STEERING_MODE_B0;
                else
                        param->steering_mode = MLX4_STEERING_MODE_A0;
        }

        if (dword_field & (1 << 13))
                param->rss_ip_frags = 1;

        /* steering attributes */
        if (param->steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED) {
                MLX4_GET(param->mc_base, outbox, INIT_HCA_FS_BASE_OFFSET);
                MLX4_GET(byte_field, outbox, INIT_HCA_FS_LOG_ENTRY_SZ_OFFSET);
                param->log_mc_entry_sz = byte_field & 0x1f;
                MLX4_GET(byte_field, outbox, INIT_HCA_FS_LOG_TABLE_SZ_OFFSET);
                param->log_mc_table_sz = byte_field & 0x1f;
                MLX4_GET(byte_field, outbox, INIT_HCA_FS_A0_OFFSET);
                param->dmfs_high_steer_mode =
                        a0_dmfs_query_hw_steering[(byte_field >> 6) & 3];
        } else {
                MLX4_GET(param->mc_base, outbox, INIT_HCA_MC_BASE_OFFSET);
                MLX4_GET(byte_field, outbox, INIT_HCA_LOG_MC_ENTRY_SZ_OFFSET);
                param->log_mc_entry_sz = byte_field & 0x1f;
                MLX4_GET(byte_field,  outbox, INIT_HCA_LOG_MC_HASH_SZ_OFFSET);
                param->log_mc_hash_sz = byte_field & 0x1f;
                MLX4_GET(byte_field, outbox, INIT_HCA_LOG_MC_TABLE_SZ_OFFSET);
                param->log_mc_table_sz = byte_field & 0x1f;
        }

        /* CX3 is capable of extending CQEs/EQEs from 32 to 64 bytes */
        MLX4_GET(byte_field, outbox, INIT_HCA_EQE_CQE_OFFSETS);
        if (byte_field & 0x20) /* 64-bytes eqe enabled */
                param->dev_cap_enabled |= MLX4_DEV_CAP_64B_EQE_ENABLED;
        if (byte_field & 0x40) /* 64-bytes cqe enabled */
                param->dev_cap_enabled |= MLX4_DEV_CAP_64B_CQE_ENABLED;

        /* CX3 is capable of extending CQEs\EQEs to strides larger than 64B */
        MLX4_GET(byte_field, outbox, INIT_HCA_EQE_CQE_STRIDE_OFFSET);
        if (byte_field) {
                param->dev_cap_enabled |= MLX4_DEV_CAP_EQE_STRIDE_ENABLED;
                param->dev_cap_enabled |= MLX4_DEV_CAP_CQE_STRIDE_ENABLED;
                param->cqe_size = 1 << ((byte_field &
                                         MLX4_CQE_SIZE_MASK_STRIDE) + 5);
                param->eqe_size = 1 << (((byte_field &
                                          MLX4_EQE_SIZE_MASK_STRIDE) >> 4) + 5);
        }

        /* TPT attributes */

        MLX4_GET(param->dmpt_base,  outbox, INIT_HCA_DMPT_BASE_OFFSET);
        MLX4_GET(byte_field, outbox, INIT_HCA_TPT_MW_OFFSET);
        param->mw_enabled = byte_field >> 7;
        MLX4_GET(byte_field, outbox, INIT_HCA_LOG_MPT_SZ_OFFSET);
        param->log_mpt_sz = byte_field & 0x3f;
        MLX4_GET(param->mtt_base,   outbox, INIT_HCA_MTT_BASE_OFFSET);
        MLX4_GET(param->cmpt_base,  outbox, INIT_HCA_CMPT_BASE_OFFSET);

        /* UAR attributes */

        MLX4_GET(param->uar_page_sz, outbox, INIT_HCA_UAR_PAGE_SZ_OFFSET);
        MLX4_GET(byte_field, outbox, INIT_HCA_LOG_UAR_SZ_OFFSET);
        param->log_uar_sz = byte_field & 0xf;

        /* phv_check enable */
        MLX4_GET(byte_field, outbox, INIT_HCA_CACHELINE_SZ_OFFSET);
        if (byte_field & 0x2)
                param->phv_check_en = 1;
out:
        mlx4_free_cmd_mailbox(dev, mailbox);

        return err;
}

static int mlx4_hca_core_clock_update(struct mlx4_dev *dev)
{
        struct mlx4_cmd_mailbox *mailbox;
        __be32 *outbox;
        int err;

        mailbox = mlx4_alloc_cmd_mailbox(dev);
        if (IS_ERR(mailbox)) {
                mlx4_warn(dev, "hca_core_clock mailbox allocation failed\n");
                return PTR_ERR(mailbox);
        }
        outbox = mailbox->buf;

        err = mlx4_cmd_box(dev, 0, mailbox->dma, 0, 0,
                           MLX4_CMD_QUERY_HCA,
                           MLX4_CMD_TIME_CLASS_B,
                           !mlx4_is_slave(dev));
        if (err) {
                mlx4_warn(dev, "hca_core_clock update failed\n");
                goto out;
        }

        MLX4_GET(dev->caps.hca_core_clock, outbox, QUERY_HCA_CORE_CLOCK_OFFSET);

out:
        mlx4_free_cmd_mailbox(dev, mailbox);

        return err;
}

/* for IB-type ports only in SRIOV mode. Checks that both proxy QP0
 * and real QP0 are active, so that the paravirtualized QP0 is ready
 * to operate */
static int check_qp0_state(struct mlx4_dev *dev, int function, int port)
{
        struct mlx4_priv *priv = mlx4_priv(dev);
        /* irrelevant if not infiniband */
        if (priv->mfunc.master.qp0_state[port].proxy_qp0_active &&
            priv->mfunc.master.qp0_state[port].qp0_active)
                return 1;
        return 0;
}

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_cmd_info *cmd)
{
        struct mlx4_priv *priv = mlx4_priv(dev);
        int port = mlx4_slave_convert_port(dev, slave, vhcr->in_modifier);
        int err;

        if (port < 0)
                return -EINVAL;

        if (priv->mfunc.master.slave_state[slave].init_port_mask & (1 << port))
                return 0;

        if (dev->caps.port_mask[port] != MLX4_PORT_TYPE_IB) {
                /* Enable port only if it was previously disabled */
                if (!priv->mfunc.master.init_port_ref[port]) {
                        err = mlx4_cmd(dev, 0, port, 0, MLX4_CMD_INIT_PORT,
                                       MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
                        if (err)
                                return err;
                }
                priv->mfunc.master.slave_state[slave].init_port_mask |= (1 << port);
        } else {
                if (slave == mlx4_master_func_num(dev)) {
                        if (check_qp0_state(dev, slave, port) &&
                            !priv->mfunc.master.qp0_state[port].port_active) {
                                err = mlx4_cmd(dev, 0, port, 0, MLX4_CMD_INIT_PORT,
                                               MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
                                if (err)
                                        return err;
                                priv->mfunc.master.qp0_state[port].port_active = 1;
                                priv->mfunc.master.slave_state[slave].init_port_mask |= (1 << port);
                        }
                } else
                        priv->mfunc.master.slave_state[slave].init_port_mask |= (1 << port);
        }
        ++priv->mfunc.master.init_port_ref[port];
        return 0;
}

int mlx4_INIT_PORT(struct mlx4_dev *dev, int port)
{
        struct mlx4_cmd_mailbox *mailbox;
        u32 *inbox;
        int err;
        u32 flags;
        u16 field;

        if (dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
#define INIT_PORT_IN_SIZE          256
#define INIT_PORT_FLAGS_OFFSET     0x00
#define INIT_PORT_FLAG_SIG         (1 << 18)
#define INIT_PORT_FLAG_NG          (1 << 17)
#define INIT_PORT_FLAG_G0          (1 << 16)
#define INIT_PORT_VL_SHIFT         4
#define INIT_PORT_PORT_WIDTH_SHIFT 8
#define INIT_PORT_MTU_OFFSET       0x04
#define INIT_PORT_MAX_GID_OFFSET   0x06
#define INIT_PORT_MAX_PKEY_OFFSET  0x0a
#define INIT_PORT_GUID0_OFFSET     0x10
#define INIT_PORT_NODE_GUID_OFFSET 0x18
#define INIT_PORT_SI_GUID_OFFSET   0x20

                mailbox = mlx4_alloc_cmd_mailbox(dev);
                if (IS_ERR(mailbox))
                        return PTR_ERR(mailbox);
                inbox = mailbox->buf;

                flags = 0;
                flags |= (dev->caps.vl_cap[port] & 0xf) << INIT_PORT_VL_SHIFT;
                flags |= (dev->caps.port_width_cap[port] & 0xf) << INIT_PORT_PORT_WIDTH_SHIFT;
                MLX4_PUT(inbox, flags,            INIT_PORT_FLAGS_OFFSET);

                field = 128 << dev->caps.ib_mtu_cap[port];
                MLX4_PUT(inbox, field, INIT_PORT_MTU_OFFSET);
                field = dev->caps.gid_table_len[port];
                MLX4_PUT(inbox, field, INIT_PORT_MAX_GID_OFFSET);
                field = dev->caps.pkey_table_len[port];
                MLX4_PUT(inbox, field, INIT_PORT_MAX_PKEY_OFFSET);

                err = mlx4_cmd(dev, mailbox->dma, port, 0, MLX4_CMD_INIT_PORT,
                               MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);

                mlx4_free_cmd_mailbox(dev, mailbox);
        } else
                err = mlx4_cmd(dev, 0, port, 0, MLX4_CMD_INIT_PORT,
                               MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);

        if (!err)
                mlx4_hca_core_clock_update(dev);

        return err;
}
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_cmd_info *cmd)
{
        struct mlx4_priv *priv = mlx4_priv(dev);
        int port = mlx4_slave_convert_port(dev, slave, vhcr->in_modifier);
        int err;

        if (port < 0)
                return -EINVAL;

        if (!(priv->mfunc.master.slave_state[slave].init_port_mask &
            (1 << port)))
                return 0;

        if (dev->caps.port_mask[port] != MLX4_PORT_TYPE_IB) {
                if (priv->mfunc.master.init_port_ref[port] == 1) {
                        err = mlx4_cmd(dev, 0, port, 0, MLX4_CMD_CLOSE_PORT,
                                       MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
                        if (err)
                                return err;
                }
                priv->mfunc.master.slave_state[slave].init_port_mask &= ~(1 << port);
        } else {
                /* infiniband port */
                if (slave == mlx4_master_func_num(dev)) {
                        if (!priv->mfunc.master.qp0_state[port].qp0_active &&
                            priv->mfunc.master.qp0_state[port].port_active) {
                                err = mlx4_cmd(dev, 0, port, 0, MLX4_CMD_CLOSE_PORT,
                                               MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
                                if (err)
                                        return err;
                                priv->mfunc.master.slave_state[slave].init_port_mask &= ~(1 << port);
                                priv->mfunc.master.qp0_state[port].port_active = 0;
                        }
                } else
                        priv->mfunc.master.slave_state[slave].init_port_mask &= ~(1 << port);
        }
        --priv->mfunc.master.init_port_ref[port];
        return 0;
}

int mlx4_CLOSE_PORT(struct mlx4_dev *dev, int port)
{
        return mlx4_cmd(dev, 0, port, 0, MLX4_CMD_CLOSE_PORT,
                        MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
}
EXPORT_SYMBOL_GPL(mlx4_CLOSE_PORT);

int mlx4_CLOSE_HCA(struct mlx4_dev *dev, int panic)
{
        return mlx4_cmd(dev, 0, 0, panic, MLX4_CMD_CLOSE_HCA,
                        MLX4_CMD_TIME_CLASS_C, MLX4_CMD_NATIVE);
}

struct mlx4_config_dev {
        __be32  update_flags;
        __be32  rsvd1[3];
        __be16  vxlan_udp_dport;
        __be16  rsvd2;
        __be16  roce_v2_entropy;
        __be16  roce_v2_udp_dport;
        __be32  roce_flags;
        __be32  rsvd4[25];
        __be16  rsvd5;
        u8      rsvd6;
        u8      rx_checksum_val;
};

#define MLX4_VXLAN_UDP_DPORT (1 << 0)
#define MLX4_ROCE_V2_UDP_DPORT BIT(3)
#define MLX4_DISABLE_RX_PORT BIT(18)

static int mlx4_CONFIG_DEV_set(struct mlx4_dev *dev, struct mlx4_config_dev *config_dev)
{
        int err;
        struct mlx4_cmd_mailbox *mailbox;

        mailbox = mlx4_alloc_cmd_mailbox(dev);
        if (IS_ERR(mailbox))
                return PTR_ERR(mailbox);

        memcpy(mailbox->buf, config_dev, sizeof(*config_dev));

        err = mlx4_cmd(dev, mailbox->dma, 0, 0, MLX4_CMD_CONFIG_DEV,
                       MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);

        mlx4_free_cmd_mailbox(dev, mailbox);
        return err;
}

static int mlx4_CONFIG_DEV_get(struct mlx4_dev *dev, struct mlx4_config_dev *config_dev)
{
        int err;
        struct mlx4_cmd_mailbox *mailbox;

        mailbox = mlx4_alloc_cmd_mailbox(dev);
        if (IS_ERR(mailbox))
                return PTR_ERR(mailbox);

        err = mlx4_cmd_box(dev, 0, mailbox->dma, 0, 1, MLX4_CMD_CONFIG_DEV,
                           MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);

        if (!err)
                memcpy(config_dev, mailbox->buf, sizeof(*config_dev));

        mlx4_free_cmd_mailbox(dev, mailbox);
        return err;
}

/* Conversion between the HW values and the actual functionality.
 * The value represented by the array index,
 * and the functionality determined by the flags.
 */
static const u8 config_dev_csum_flags[] = {
        [0] =   0,
        [1] =   MLX4_RX_CSUM_MODE_VAL_NON_TCP_UDP,
        [2] =   MLX4_RX_CSUM_MODE_VAL_NON_TCP_UDP       |
                MLX4_RX_CSUM_MODE_L4,
        [3] =   MLX4_RX_CSUM_MODE_L4                    |
                MLX4_RX_CSUM_MODE_IP_OK_IP_NON_TCP_UDP  |
                MLX4_RX_CSUM_MODE_MULTI_VLAN
};

int mlx4_config_dev_retrieval(struct mlx4_dev *dev,
                              struct mlx4_config_dev_params *params)
{
        struct mlx4_config_dev config_dev = {0};
        int err;
        u8 csum_mask;

#define CONFIG_DEV_RX_CSUM_MODE_MASK                    0x7
#define CONFIG_DEV_RX_CSUM_MODE_PORT1_BIT_OFFSET        0
#define CONFIG_DEV_RX_CSUM_MODE_PORT2_BIT_OFFSET        4

        if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_CONFIG_DEV))
                return -EOPNOTSUPP;

        err = mlx4_CONFIG_DEV_get(dev, &config_dev);
        if (err)
                return err;

        csum_mask = (config_dev.rx_checksum_val >> CONFIG_DEV_RX_CSUM_MODE_PORT1_BIT_OFFSET) &
                        CONFIG_DEV_RX_CSUM_MODE_MASK;

        if (csum_mask >= ARRAY_SIZE(config_dev_csum_flags))
                return -EINVAL;
        params->rx_csum_flags_port_1 = config_dev_csum_flags[csum_mask];

        csum_mask = (config_dev.rx_checksum_val >> CONFIG_DEV_RX_CSUM_MODE_PORT2_BIT_OFFSET) &
                        CONFIG_DEV_RX_CSUM_MODE_MASK;

        if (csum_mask >= ARRAY_SIZE(config_dev_csum_flags))
                return -EINVAL;
        params->rx_csum_flags_port_2 = config_dev_csum_flags[csum_mask];

        params->vxlan_udp_dport = be16_to_cpu(config_dev.vxlan_udp_dport);

        return 0;
}
EXPORT_SYMBOL_GPL(mlx4_config_dev_retrieval);

int mlx4_config_vxlan_port(struct mlx4_dev *dev, __be16 udp_port)
{
        struct mlx4_config_dev config_dev;

        memset(&config_dev, 0, sizeof(config_dev));
        config_dev.update_flags    = cpu_to_be32(MLX4_VXLAN_UDP_DPORT);
        config_dev.vxlan_udp_dport = udp_port;

        return mlx4_CONFIG_DEV_set(dev, &config_dev);
}
EXPORT_SYMBOL_GPL(mlx4_config_vxlan_port);

#define CONFIG_DISABLE_RX_PORT BIT(15)
int mlx4_disable_rx_port_check(struct mlx4_dev *dev, bool dis)
{
        struct mlx4_config_dev config_dev;

        memset(&config_dev, 0, sizeof(config_dev));
        config_dev.update_flags = cpu_to_be32(MLX4_DISABLE_RX_PORT);
        if (dis)
                config_dev.roce_flags =
                        cpu_to_be32(CONFIG_DISABLE_RX_PORT);

        return mlx4_CONFIG_DEV_set(dev, &config_dev);
}

int mlx4_config_roce_v2_port(struct mlx4_dev *dev, u16 udp_port)
{
        struct mlx4_config_dev config_dev;

        memset(&config_dev, 0, sizeof(config_dev));
        config_dev.update_flags    = cpu_to_be32(MLX4_ROCE_V2_UDP_DPORT);
        config_dev.roce_v2_udp_dport = cpu_to_be16(udp_port);

        return mlx4_CONFIG_DEV_set(dev, &config_dev);
}
EXPORT_SYMBOL_GPL(mlx4_config_roce_v2_port);

int mlx4_virt2phy_port_map(struct mlx4_dev *dev, u32 port1, u32 port2)
{
        struct mlx4_cmd_mailbox *mailbox;
        struct {
                __be32 v_port1;
                __be32 v_port2;
        } *v2p;
        int err;

        mailbox = mlx4_alloc_cmd_mailbox(dev);
        if (IS_ERR(mailbox))
                return -ENOMEM;

        v2p = mailbox->buf;
        v2p->v_port1 = cpu_to_be32(port1);
        v2p->v_port2 = cpu_to_be32(port2);

        err = mlx4_cmd(dev, mailbox->dma, 0,
                       MLX4_SET_PORT_VIRT2PHY, MLX4_CMD_VIRT_PORT_MAP,
                       MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);

        mlx4_free_cmd_mailbox(dev, mailbox);
        return err;
}


int mlx4_SET_ICM_SIZE(struct mlx4_dev *dev, u64 icm_size, u64 *aux_pages)
{
        int ret = mlx4_cmd_imm(dev, icm_size, aux_pages, 0, 0,
                               MLX4_CMD_SET_ICM_SIZE,
                               MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
        if (ret)
                return ret;

        /*
         * Round up number of system pages needed in case
         * MLX4_ICM_PAGE_SIZE < PAGE_SIZE.
         */
        *aux_pages = ALIGN(*aux_pages, PAGE_SIZE / MLX4_ICM_PAGE_SIZE) >>
                (PAGE_SHIFT - MLX4_ICM_PAGE_SHIFT);

        return 0;
}

int mlx4_NOP(struct mlx4_dev *dev)
{
        /* Input modifier of 0x1f means "finish as soon as possible." */
        return mlx4_cmd(dev, 0, 0x1f, 0, MLX4_CMD_NOP, MLX4_CMD_TIME_CLASS_A,
                        MLX4_CMD_NATIVE);
}

int mlx4_query_diag_counters(struct mlx4_dev *dev, u8 op_modifier,
                             const u32 offset[],
                             u32 value[], size_t array_len, u8 port)
{
        struct mlx4_cmd_mailbox *mailbox;
        u32 *outbox;
        size_t i;
        int ret;

        mailbox = mlx4_alloc_cmd_mailbox(dev);
        if (IS_ERR(mailbox))
                return PTR_ERR(mailbox);

        outbox = mailbox->buf;

        ret = mlx4_cmd_box(dev, 0, mailbox->dma, port, op_modifier,
                           MLX4_CMD_DIAG_RPRT, MLX4_CMD_TIME_CLASS_A,
                           MLX4_CMD_NATIVE);
        if (ret)
                goto out;

        for (i = 0; i < array_len; i++) {
                if (offset[i] > MLX4_MAILBOX_SIZE) {
                        ret = -EINVAL;
                        goto out;
                }

                MLX4_GET(value[i], outbox, offset[i]);
        }

out:
        mlx4_free_cmd_mailbox(dev, mailbox);
        return ret;
}
EXPORT_SYMBOL(mlx4_query_diag_counters);

int mlx4_get_phys_port_id(struct mlx4_dev *dev)
{
        u8 port;
        u32 *outbox;
        struct mlx4_cmd_mailbox *mailbox;
        u32 in_mod;
        u32 guid_hi, guid_lo;
        int err, ret = 0;
#define MOD_STAT_CFG_PORT_OFFSET 8
#define MOD_STAT_CFG_GUID_H      0X14
#define MOD_STAT_CFG_GUID_L      0X1c

        mailbox = mlx4_alloc_cmd_mailbox(dev);
        if (IS_ERR(mailbox))
                return PTR_ERR(mailbox);
        outbox = mailbox->buf;

        for (port = 1; port <= dev->caps.num_ports; port++) {
                in_mod = port << MOD_STAT_CFG_PORT_OFFSET;
                err = mlx4_cmd_box(dev, 0, mailbox->dma, in_mod, 0x2,
                                   MLX4_CMD_MOD_STAT_CFG, MLX4_CMD_TIME_CLASS_A,
                                   MLX4_CMD_NATIVE);
                if (err) {
                        mlx4_err(dev, "Fail to get port %d uplink guid\n",
                                 port);
                        ret = err;
                } else {
                        MLX4_GET(guid_hi, outbox, MOD_STAT_CFG_GUID_H);
                        MLX4_GET(guid_lo, outbox, MOD_STAT_CFG_GUID_L);
                        dev->caps.phys_port_id[port] = (u64)guid_lo |
                                                       (u64)guid_hi << 32;
                }
        }
        mlx4_free_cmd_mailbox(dev, mailbox);
        return ret;
}

#define MLX4_WOL_SETUP_MODE (5 << 28)
int mlx4_wol_read(struct mlx4_dev *dev, u64 *config, int port)
{
        u32 in_mod = MLX4_WOL_SETUP_MODE | port << 8;

        return mlx4_cmd_imm(dev, 0, config, in_mod, 0x3,
                            MLX4_CMD_MOD_STAT_CFG, MLX4_CMD_TIME_CLASS_A,
                            MLX4_CMD_NATIVE);
}
EXPORT_SYMBOL_GPL(mlx4_wol_read);

int mlx4_wol_write(struct mlx4_dev *dev, u64 config, int port)
{
        u32 in_mod = MLX4_WOL_SETUP_MODE | port << 8;

        return mlx4_cmd(dev, config, in_mod, 0x1, MLX4_CMD_MOD_STAT_CFG,
                        MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
}
EXPORT_SYMBOL_GPL(mlx4_wol_write);

enum {
        ADD_TO_MCG = 0x26,
};


void mlx4_opreq_action(struct work_struct *work)
{
        struct mlx4_priv *priv = container_of(work, struct mlx4_priv,
                                              opreq_task);
        struct mlx4_dev *dev = &priv->dev;
        int num_tasks = atomic_read(&priv->opreq_count);
        struct mlx4_cmd_mailbox *mailbox;
        struct mlx4_mgm *mgm;
        u32 *outbox;
        u32 modifier;
        u16 token;
        u16 type;
        int err;
        u32 num_qps;
        struct mlx4_qp qp;
        int i;
        u8 rem_mcg;
        u8 prot;

#define GET_OP_REQ_MODIFIER_OFFSET      0x08
#define GET_OP_REQ_TOKEN_OFFSET         0x14
#define GET_OP_REQ_TYPE_OFFSET          0x1a
#define GET_OP_REQ_DATA_OFFSET          0x20

        mailbox = mlx4_alloc_cmd_mailbox(dev);
        if (IS_ERR(mailbox)) {
                mlx4_err(dev, "Failed to allocate mailbox for GET_OP_REQ\n");
                return;
        }
        outbox = mailbox->buf;

        while (num_tasks) {
                err = mlx4_cmd_box(dev, 0, mailbox->dma, 0, 0,
                                   MLX4_CMD_GET_OP_REQ, MLX4_CMD_TIME_CLASS_A,
                                   MLX4_CMD_NATIVE);
                if (err) {
                        mlx4_err(dev, "Failed to retreive required operation: %d\n",
                                 err);
                        return;
                }
                MLX4_GET(modifier, outbox, GET_OP_REQ_MODIFIER_OFFSET);
                MLX4_GET(token, outbox, GET_OP_REQ_TOKEN_OFFSET);
                MLX4_GET(type, outbox, GET_OP_REQ_TYPE_OFFSET);
                type &= 0xfff;

                switch (type) {
                case ADD_TO_MCG:
                        if (dev->caps.steering_mode ==
                            MLX4_STEERING_MODE_DEVICE_MANAGED) {
                                mlx4_warn(dev, "ADD MCG operation is not supported in DEVICE_MANAGED steering mode\n");
                                err = EPERM;
                                break;
                        }
                        mgm = (struct mlx4_mgm *)((u8 *)(outbox) +
                                                  GET_OP_REQ_DATA_OFFSET);
                        num_qps = be32_to_cpu(mgm->members_count) &
                                  MGM_QPN_MASK;
                        rem_mcg = ((u8 *)(&mgm->members_count))[0] & 1;
                        prot = ((u8 *)(&mgm->members_count))[0] >> 6;

                        for (i = 0; i < num_qps; i++) {
                                qp.qpn = be32_to_cpu(mgm->qp[i]);
                                if (rem_mcg)
                                        err = mlx4_multicast_detach(dev, &qp,
                                                                    mgm->gid,
                                                                    prot, 0);
                                else
                                        err = mlx4_multicast_attach(dev, &qp,
                                                                    mgm->gid,
                                                                    mgm->gid[5]
                                                                    , 0, prot,
                                                                    NULL);
                                if (err)
                                        break;
                        }
                        break;
                default:
                        mlx4_warn(dev, "Bad type for required operation\n");
                        err = EINVAL;
                        break;
                }
                err = mlx4_cmd(dev, 0, ((u32) err |
                                        (__force u32)cpu_to_be32(token) << 16),
                               1, MLX4_CMD_GET_OP_REQ, MLX4_CMD_TIME_CLASS_A,
                               MLX4_CMD_NATIVE);
                if (err) {
                        mlx4_err(dev, "Failed to acknowledge required request: %d\n",
                                 err);
                        goto out;
                }
                memset(outbox, 0, 0xffc);
                num_tasks = atomic_dec_return(&priv->opreq_count);
        }

out:
        mlx4_free_cmd_mailbox(dev, mailbox);
}

static int mlx4_check_smp_firewall_active(struct mlx4_dev *dev,
                                          struct mlx4_cmd_mailbox *mailbox)
{
#define MLX4_CMD_MAD_DEMUX_SET_ATTR_OFFSET              0x10
#define MLX4_CMD_MAD_DEMUX_GETRESP_ATTR_OFFSET          0x20
#define MLX4_CMD_MAD_DEMUX_TRAP_ATTR_OFFSET             0x40
#define MLX4_CMD_MAD_DEMUX_TRAP_REPRESS_ATTR_OFFSET     0x70

        u32 set_attr_mask, getresp_attr_mask;
        u32 trap_attr_mask, traprepress_attr_mask;

        MLX4_GET(set_attr_mask, mailbox->buf,
                 MLX4_CMD_MAD_DEMUX_SET_ATTR_OFFSET);
        mlx4_dbg(dev, "SMP firewall set_attribute_mask = 0x%x\n",
                 set_attr_mask);

        MLX4_GET(getresp_attr_mask, mailbox->buf,
                 MLX4_CMD_MAD_DEMUX_GETRESP_ATTR_OFFSET);
        mlx4_dbg(dev, "SMP firewall getresp_attribute_mask = 0x%x\n",
                 getresp_attr_mask);

        MLX4_GET(trap_attr_mask, mailbox->buf,
                 MLX4_CMD_MAD_DEMUX_TRAP_ATTR_OFFSET);
        mlx4_dbg(dev, "SMP firewall trap_attribute_mask = 0x%x\n",
                 trap_attr_mask);

        MLX4_GET(traprepress_attr_mask, mailbox->buf,
                 MLX4_CMD_MAD_DEMUX_TRAP_REPRESS_ATTR_OFFSET);
        mlx4_dbg(dev, "SMP firewall traprepress_attribute_mask = 0x%x\n",
                 traprepress_attr_mask);

        if (set_attr_mask && getresp_attr_mask && trap_attr_mask &&
            traprepress_attr_mask)
                return 1;

        return 0;
}

int mlx4_config_mad_demux(struct mlx4_dev *dev)
{
        struct mlx4_cmd_mailbox *mailbox;
        int err;

        /* Check if mad_demux is supported */
        if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_MAD_DEMUX))
                return 0;

        mailbox = mlx4_alloc_cmd_mailbox(dev);
        if (IS_ERR(mailbox)) {
                mlx4_warn(dev, "Failed to allocate mailbox for cmd MAD_DEMUX");
                return -ENOMEM;
        }

        /* Query mad_demux to find out which MADs are handled by internal sma */
        err = mlx4_cmd_box(dev, 0, mailbox->dma, 0x01 /* subn mgmt class */,
                           MLX4_CMD_MAD_DEMUX_QUERY_RESTR, MLX4_CMD_MAD_DEMUX,
                           MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
        if (err) {
                mlx4_warn(dev, "MLX4_CMD_MAD_DEMUX: query restrictions failed (%d)\n",
                          err);
                goto out;
        }

        if (mlx4_check_smp_firewall_active(dev, mailbox))
                dev->flags |= MLX4_FLAG_SECURE_HOST;

        /* Config mad_demux to handle all MADs returned by the query above */
        err = mlx4_cmd(dev, mailbox->dma, 0x01 /* subn mgmt class */,
                       MLX4_CMD_MAD_DEMUX_CONFIG, MLX4_CMD_MAD_DEMUX,
                       MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
        if (err) {
                mlx4_warn(dev, "MLX4_CMD_MAD_DEMUX: configure failed (%d)\n", err);
                goto out;
        }

        if (dev->flags & MLX4_FLAG_SECURE_HOST)
                mlx4_warn(dev, "HCA operating in secure-host mode. SMP firewall activated.\n");
out:
        mlx4_free_cmd_mailbox(dev, mailbox);
        return err;
}

/* Access Reg commands */
enum mlx4_access_reg_masks {
        MLX4_ACCESS_REG_STATUS_MASK = 0x7f,
        MLX4_ACCESS_REG_METHOD_MASK = 0x7f,
        MLX4_ACCESS_REG_LEN_MASK = 0x7ff
};

struct mlx4_access_reg {
        __be16 constant1;
        u8 status;
        u8 resrvd1;
        __be16 reg_id;
        u8 method;
        u8 constant2;
        __be32 resrvd2[2];
        __be16 len_const;
        __be16 resrvd3;
#define MLX4_ACCESS_REG_HEADER_SIZE (20)
        u8 reg_data[MLX4_MAILBOX_SIZE-MLX4_ACCESS_REG_HEADER_SIZE];
} __attribute__((__packed__));

/**
 * mlx4_ACCESS_REG - Generic access reg command.
 * @dev: mlx4_dev.
 * @reg_id: register ID to access.
 * @method: Access method Read/Write.
 * @reg_len: register length to Read/Write in bytes.
 * @reg_data: reg_data pointer to Read/Write From/To.
 *
 * Access ConnectX registers FW command.
 * Returns 0 on success and copies outbox mlx4_access_reg data
 * field into reg_data or a negative error code.
 */
static int mlx4_ACCESS_REG(struct mlx4_dev *dev, u16 reg_id,
                           enum mlx4_access_reg_method method,
                           u16 reg_len, void *reg_data)
{
        struct mlx4_cmd_mailbox *inbox, *outbox;
        struct mlx4_access_reg *inbuf, *outbuf;
        int err;

        inbox = mlx4_alloc_cmd_mailbox(dev);
        if (IS_ERR(inbox))
                return PTR_ERR(inbox);

        outbox = mlx4_alloc_cmd_mailbox(dev);
        if (IS_ERR(outbox)) {
                mlx4_free_cmd_mailbox(dev, inbox);
                return PTR_ERR(outbox);
        }

        inbuf = inbox->buf;
        outbuf = outbox->buf;

        inbuf->constant1 = cpu_to_be16(0x1<<11 | 0x4);
        inbuf->constant2 = 0x1;
        inbuf->reg_id = cpu_to_be16(reg_id);
        inbuf->method = method & MLX4_ACCESS_REG_METHOD_MASK;

        reg_len = min(reg_len, (u16)(sizeof(inbuf->reg_data)));
        inbuf->len_const =
                cpu_to_be16(((reg_len/4 + 1) & MLX4_ACCESS_REG_LEN_MASK) |
                            ((0x3) << 12));

        memcpy(inbuf->reg_data, reg_data, reg_len);
        err = mlx4_cmd_box(dev, inbox->dma, outbox->dma, 0, 0,
                           MLX4_CMD_ACCESS_REG, MLX4_CMD_TIME_CLASS_C,
                           MLX4_CMD_WRAPPED);
        if (err)
                goto out;

        if (outbuf->status & MLX4_ACCESS_REG_STATUS_MASK) {
                err = outbuf->status & MLX4_ACCESS_REG_STATUS_MASK;
                mlx4_err(dev,
                         "MLX4_CMD_ACCESS_REG(%x) returned REG status (%x)\n",
                         reg_id, err);
                goto out;
        }

        memcpy(reg_data, outbuf->reg_data, reg_len);
out:
        mlx4_free_cmd_mailbox(dev, inbox);
        mlx4_free_cmd_mailbox(dev, outbox);
        return err;
}

/* ConnectX registers IDs */
enum mlx4_reg_id {
        MLX4_REG_ID_PTYS = 0x5004,
};

/**
 * mlx4_ACCESS_PTYS_REG - Access PTYs (Port Type and Speed)
 * register
 * @dev: mlx4_dev.
 * @method: Access method Read/Write.
 * @ptys_reg: PTYS register data pointer.
 *
 * Access ConnectX PTYS register, to Read/Write Port Type/Speed
 * configuration
 * Returns 0 on success or a negative error code.
 */
int mlx4_ACCESS_PTYS_REG(struct mlx4_dev *dev,
                         enum mlx4_access_reg_method method,
                         struct mlx4_ptys_reg *ptys_reg)
{
        return mlx4_ACCESS_REG(dev, MLX4_REG_ID_PTYS,
                               method, sizeof(*ptys_reg), ptys_reg);
}
EXPORT_SYMBOL_GPL(mlx4_ACCESS_PTYS_REG);

int mlx4_ACCESS_REG_wrapper(struct mlx4_dev *dev, int slave,
                            struct mlx4_vhcr *vhcr,
                            struct mlx4_cmd_mailbox *inbox,
                            struct mlx4_cmd_mailbox *outbox,
                            struct mlx4_cmd_info *cmd)
{
        struct mlx4_access_reg *inbuf = inbox->buf;
        u8 method = inbuf->method & MLX4_ACCESS_REG_METHOD_MASK;
        u16 reg_id = be16_to_cpu(inbuf->reg_id);

        if (slave != mlx4_master_func_num(dev) &&
            method == MLX4_ACCESS_REG_WRITE)
                return -EPERM;