/* QLogic qed NIC Driver
 * Copyright (c) 2015-2017  QLogic Corporation
 *
 * 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/types.h>
#include <asm/byteorder.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/string.h>
#include <linux/etherdevice.h>
#include "qed.h"
#include "qed_dcbx.h"
#include "qed_hsi.h"
#include "qed_hw.h"
#include "qed_mcp.h"
#include "qed_reg_addr.h"
#include "qed_sriov.h"

#define CHIP_MCP_RESP_ITER_US 10

#define QED_DRV_MB_MAX_RETRIES  (500 * 1000)    /* Account for 5 sec */
#define QED_MCP_RESET_RETRIES   (50 * 1000)     /* Account for 500 msec */

#define DRV_INNER_WR(_p_hwfn, _p_ptt, _ptr, _offset, _val)           \
        qed_wr(_p_hwfn, _p_ptt, (_p_hwfn->mcp_info->_ptr + _offset), \
               _val)

#define DRV_INNER_RD(_p_hwfn, _p_ptt, _ptr, _offset) \
        qed_rd(_p_hwfn, _p_ptt, (_p_hwfn->mcp_info->_ptr + _offset))

#define DRV_MB_WR(_p_hwfn, _p_ptt, _field, _val)  \
        DRV_INNER_WR(p_hwfn, _p_ptt, drv_mb_addr, \
                     offsetof(struct public_drv_mb, _field), _val)

#define DRV_MB_RD(_p_hwfn, _p_ptt, _field)         \
        DRV_INNER_RD(_p_hwfn, _p_ptt, drv_mb_addr, \
                     offsetof(struct public_drv_mb, _field))

#define PDA_COMP (((FW_MAJOR_VERSION) + (FW_MINOR_VERSION << 8)) << \
                  DRV_ID_PDA_COMP_VER_SHIFT)

#define MCP_BYTES_PER_MBIT_SHIFT 17

bool qed_mcp_is_init(struct qed_hwfn *p_hwfn)
{
        if (!p_hwfn->mcp_info || !p_hwfn->mcp_info->public_base)
                return false;
        return true;
}

void qed_mcp_cmd_port_init(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
{
        u32 addr = SECTION_OFFSIZE_ADDR(p_hwfn->mcp_info->public_base,
                                        PUBLIC_PORT);
        u32 mfw_mb_offsize = qed_rd(p_hwfn, p_ptt, addr);

        p_hwfn->mcp_info->port_addr = SECTION_ADDR(mfw_mb_offsize,
                                                   MFW_PORT(p_hwfn));
        DP_VERBOSE(p_hwfn, QED_MSG_SP,
                   "port_addr = 0x%x, port_id 0x%02x\n",
                   p_hwfn->mcp_info->port_addr, MFW_PORT(p_hwfn));
}

void qed_mcp_read_mb(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
{
        u32 length = MFW_DRV_MSG_MAX_DWORDS(p_hwfn->mcp_info->mfw_mb_length);
        u32 tmp, i;

        if (!p_hwfn->mcp_info->public_base)
                return;

        for (i = 0; i < length; i++) {
                tmp = qed_rd(p_hwfn, p_ptt,
                             p_hwfn->mcp_info->mfw_mb_addr +
                             (i << 2) + sizeof(u32));

                /* The MB data is actually BE; Need to force it to cpu */
                ((u32 *)p_hwfn->mcp_info->mfw_mb_cur)[i] =
                        be32_to_cpu((__force __be32)tmp);
        }
}

struct qed_mcp_cmd_elem {
        struct list_head list;
        struct qed_mcp_mb_params *p_mb_params;
        u16 expected_seq_num;
        bool b_is_completed;
};

/* Must be called while cmd_lock is acquired */
static struct qed_mcp_cmd_elem *
qed_mcp_cmd_add_elem(struct qed_hwfn *p_hwfn,
                     struct qed_mcp_mb_params *p_mb_params,
                     u16 expected_seq_num)
{
        struct qed_mcp_cmd_elem *p_cmd_elem = NULL;

        p_cmd_elem = kzalloc(sizeof(*p_cmd_elem), GFP_ATOMIC);
        if (!p_cmd_elem)
                goto out;

        p_cmd_elem->p_mb_params = p_mb_params;
        p_cmd_elem->expected_seq_num = expected_seq_num;
        list_add(&p_cmd_elem->list, &p_hwfn->mcp_info->cmd_list);
out:
        return p_cmd_elem;
}

/* Must be called while cmd_lock is acquired */
static void qed_mcp_cmd_del_elem(struct qed_hwfn *p_hwfn,
                                 struct qed_mcp_cmd_elem *p_cmd_elem)
{
        list_del(&p_cmd_elem->list);
        kfree(p_cmd_elem);
}

/* Must be called while cmd_lock is acquired */
static struct qed_mcp_cmd_elem *qed_mcp_cmd_get_elem(struct qed_hwfn *p_hwfn,
                                                     u16 seq_num)
{
        struct qed_mcp_cmd_elem *p_cmd_elem = NULL;

        list_for_each_entry(p_cmd_elem, &p_hwfn->mcp_info->cmd_list, list) {
                if (p_cmd_elem->expected_seq_num == seq_num)
                        return p_cmd_elem;
        }

        return NULL;
}

int qed_mcp_free(struct qed_hwfn *p_hwfn)
{
        if (p_hwfn->mcp_info) {
                struct qed_mcp_cmd_elem *p_cmd_elem, *p_tmp;

                kfree(p_hwfn->mcp_info->mfw_mb_cur);
                kfree(p_hwfn->mcp_info->mfw_mb_shadow);

                spin_lock_bh(&p_hwfn->mcp_info->cmd_lock);
                list_for_each_entry_safe(p_cmd_elem,
                                         p_tmp,
                                         &p_hwfn->mcp_info->cmd_list, list) {
                        qed_mcp_cmd_del_elem(p_hwfn, p_cmd_elem);
                }
                spin_unlock_bh(&p_hwfn->mcp_info->cmd_lock);
        }

        kfree(p_hwfn->mcp_info);
        p_hwfn->mcp_info = NULL;

        return 0;
}

static int qed_load_mcp_offsets(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
{
        struct qed_mcp_info *p_info = p_hwfn->mcp_info;
        u32 drv_mb_offsize, mfw_mb_offsize;
        u32 mcp_pf_id = MCP_PF_ID(p_hwfn);

        p_info->public_base = qed_rd(p_hwfn, p_ptt, MISC_REG_SHARED_MEM_ADDR);
        if (!p_info->public_base)
                return 0;

        p_info->public_base |= GRCBASE_MCP;

        /* Calculate the driver and MFW mailbox address */
        drv_mb_offsize = qed_rd(p_hwfn, p_ptt,
                                SECTION_OFFSIZE_ADDR(p_info->public_base,
                                                     PUBLIC_DRV_MB));
        p_info->drv_mb_addr = SECTION_ADDR(drv_mb_offsize, mcp_pf_id);
        DP_VERBOSE(p_hwfn, QED_MSG_SP,
                   "drv_mb_offsiz = 0x%x, drv_mb_addr = 0x%x mcp_pf_id = 0x%x\n",
                   drv_mb_offsize, p_info->drv_mb_addr, mcp_pf_id);

        /* Set the MFW MB address */
        mfw_mb_offsize = qed_rd(p_hwfn, p_ptt,
                                SECTION_OFFSIZE_ADDR(p_info->public_base,
                                                     PUBLIC_MFW_MB));
        p_info->mfw_mb_addr = SECTION_ADDR(mfw_mb_offsize, mcp_pf_id);
        p_info->mfw_mb_length = (u16)qed_rd(p_hwfn, p_ptt, p_info->mfw_mb_addr);

        /* Get the current driver mailbox sequence before sending
         * the first command
         */
        p_info->drv_mb_seq = DRV_MB_RD(p_hwfn, p_ptt, drv_mb_header) &
                             DRV_MSG_SEQ_NUMBER_MASK;

        /* Get current FW pulse sequence */
        p_info->drv_pulse_seq = DRV_MB_RD(p_hwfn, p_ptt, drv_pulse_mb) &
                                DRV_PULSE_SEQ_MASK;

        p_info->mcp_hist = qed_rd(p_hwfn, p_ptt, MISCS_REG_GENERIC_POR_0);

        return 0;
}

int qed_mcp_cmd_init(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
{
        struct qed_mcp_info *p_info;
        u32 size;

        /* Allocate mcp_info structure */
        p_hwfn->mcp_info = kzalloc(sizeof(*p_hwfn->mcp_info), GFP_KERNEL);
        if (!p_hwfn->mcp_info)
                goto err;
        p_info = p_hwfn->mcp_info;

        /* Initialize the MFW spinlock */
        spin_lock_init(&p_info->cmd_lock);
        spin_lock_init(&p_info->link_lock);

        INIT_LIST_HEAD(&p_info->cmd_list);

        if (qed_load_mcp_offsets(p_hwfn, p_ptt) != 0) {
                DP_NOTICE(p_hwfn, "MCP is not initialized\n");
                /* Do not free mcp_info here, since public_base indicate that
                 * the MCP is not initialized
                 */
                return 0;
        }

        size = MFW_DRV_MSG_MAX_DWORDS(p_info->mfw_mb_length) * sizeof(u32);
        p_info->mfw_mb_cur = kzalloc(size, GFP_KERNEL);
        p_info->mfw_mb_shadow = kzalloc(size, GFP_KERNEL);
        if (!p_info->mfw_mb_cur || !p_info->mfw_mb_shadow)
                goto err;

        return 0;

err:
        qed_mcp_free(p_hwfn);
        return -ENOMEM;
}

static void qed_mcp_reread_offsets(struct qed_hwfn *p_hwfn,
                                   struct qed_ptt *p_ptt)
{
        u32 generic_por_0 = qed_rd(p_hwfn, p_ptt, MISCS_REG_GENERIC_POR_0);

        /* Use MCP history register to check if MCP reset occurred between init
         * time and now.
         */
        if (p_hwfn->mcp_info->mcp_hist != generic_por_0) {
                DP_VERBOSE(p_hwfn,
                           QED_MSG_SP,
                           "Rereading MCP offsets [mcp_hist 0x%08x, generic_por_0 0x%08x]\n",
                           p_hwfn->mcp_info->mcp_hist, generic_por_0);

                qed_load_mcp_offsets(p_hwfn, p_ptt);
                qed_mcp_cmd_port_init(p_hwfn, p_ptt);
        }
}

int qed_mcp_reset(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
{
        u32 org_mcp_reset_seq, seq, delay = CHIP_MCP_RESP_ITER_US, cnt = 0;
        int rc = 0;

        /* Ensure that only a single thread is accessing the mailbox */
        spin_lock_bh(&p_hwfn->mcp_info->cmd_lock);

        org_mcp_reset_seq = qed_rd(p_hwfn, p_ptt, MISCS_REG_GENERIC_POR_0);

        /* Set drv command along with the updated sequence */
        qed_mcp_reread_offsets(p_hwfn, p_ptt);
        seq = ++p_hwfn->mcp_info->drv_mb_seq;
        DRV_MB_WR(p_hwfn, p_ptt, drv_mb_header, (DRV_MSG_CODE_MCP_RESET | seq));

        do {
                /* Wait for MFW response */
                udelay(delay);
                /* Give the FW up to 500 second (50*1000*10usec) */
        } while ((org_mcp_reset_seq == qed_rd(p_hwfn, p_ptt,
                                              MISCS_REG_GENERIC_POR_0)) &&
                 (cnt++ < QED_MCP_RESET_RETRIES));

        if (org_mcp_reset_seq !=
            qed_rd(p_hwfn, p_ptt, MISCS_REG_GENERIC_POR_0)) {
                DP_VERBOSE(p_hwfn, QED_MSG_SP,
                           "MCP was reset after %d usec\n", cnt * delay);
        } else {
                DP_ERR(p_hwfn, "Failed to reset MCP\n");
                rc = -EAGAIN;
        }

        spin_unlock_bh(&p_hwfn->mcp_info->cmd_lock);

        return rc;
}

/* Must be called while cmd_lock is acquired */
static bool qed_mcp_has_pending_cmd(struct qed_hwfn *p_hwfn)
{
        struct qed_mcp_cmd_elem *p_cmd_elem;

        /* There is at most one pending command at a certain time, and if it
         * exists - it is placed at the HEAD of the list.
         */
        if (!list_empty(&p_hwfn->mcp_info->cmd_list)) {
                p_cmd_elem = list_first_entry(&p_hwfn->mcp_info->cmd_list,
                                              struct qed_mcp_cmd_elem, list);
                return !p_cmd_elem->b_is_completed;
        }

        return false;
}

/* Must be called while cmd_lock is acquired */
static int
qed_mcp_update_pending_cmd(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
{
        struct qed_mcp_mb_params *p_mb_params;
        struct qed_mcp_cmd_elem *p_cmd_elem;
        u32 mcp_resp;
        u16 seq_num;

        mcp_resp = DRV_MB_RD(p_hwfn, p_ptt, fw_mb_header);
        seq_num = (u16)(mcp_resp & FW_MSG_SEQ_NUMBER_MASK);

        /* Return if no new non-handled response has been received */
        if (seq_num != p_hwfn->mcp_info->drv_mb_seq)
                return -EAGAIN;

        p_cmd_elem = qed_mcp_cmd_get_elem(p_hwfn, seq_num);
        if (!p_cmd_elem) {
                DP_ERR(p_hwfn,
                       "Failed to find a pending mailbox cmd that expects sequence number %d\n",
                       seq_num);
                return -EINVAL;
        }

        p_mb_params = p_cmd_elem->p_mb_params;

        /* Get the MFW response along with the sequence number */
        p_mb_params->mcp_resp = mcp_resp;

        /* Get the MFW param */
        p_mb_params->mcp_param = DRV_MB_RD(p_hwfn, p_ptt, fw_mb_param);

        /* Get the union data */
        if (p_mb_params->p_data_dst != NULL && p_mb_params->data_dst_size) {
                u32 union_data_addr = p_hwfn->mcp_info->drv_mb_addr +
                                      offsetof(struct public_drv_mb,
                                               union_data);
                qed_memcpy_from(p_hwfn, p_ptt, p_mb_params->p_data_dst,
                                union_data_addr, p_mb_params->data_dst_size);
        }

        p_cmd_elem->b_is_completed = true;

        return 0;
}

/* Must be called while cmd_lock is acquired */
static void __qed_mcp_cmd_and_union(struct qed_hwfn *p_hwfn,
                                    struct qed_ptt *p_ptt,
                                    struct qed_mcp_mb_params *p_mb_params,
                                    u16 seq_num)
{
        union drv_union_data union_data;
        u32 union_data_addr;

        /* Set the union data */
        union_data_addr = p_hwfn->mcp_info->drv_mb_addr +
                          offsetof(struct public_drv_mb, union_data);
        memset(&union_data, 0, sizeof(union_data));
        if (p_mb_params->p_data_src != NULL && p_mb_params->data_src_size)
                memcpy(&union_data, p_mb_params->p_data_src,
                       p_mb_params->data_src_size);
        qed_memcpy_to(p_hwfn, p_ptt, union_data_addr, &union_data,
                      sizeof(union_data));

        /* Set the drv param */
        DRV_MB_WR(p_hwfn, p_ptt, drv_mb_param, p_mb_params->param);

        /* Set the drv command along with the sequence number */
        DRV_MB_WR(p_hwfn, p_ptt, drv_mb_header, (p_mb_params->cmd | seq_num));

        DP_VERBOSE(p_hwfn, QED_MSG_SP,
                   "MFW mailbox: command 0x%08x param 0x%08x\n",
                   (p_mb_params->cmd | seq_num), p_mb_params->param);
}

static int
_qed_mcp_cmd_and_union(struct qed_hwfn *p_hwfn,
                       struct qed_ptt *p_ptt,
                       struct qed_mcp_mb_params *p_mb_params,
                       u32 max_retries, u32 delay)
{
        struct qed_mcp_cmd_elem *p_cmd_elem;
        u32 cnt = 0;
        u16 seq_num;
        int rc = 0;

        /* Wait until the mailbox is non-occupied */
        do {
                /* Exit the loop if there is no pending command, or if the
                 * pending command is completed during this iteration.
                 * The spinlock stays locked until the command is sent.
                 */

                spin_lock_bh(&p_hwfn->mcp_info->cmd_lock);

                if (!qed_mcp_has_pending_cmd(p_hwfn))
                        break;

                rc = qed_mcp_update_pending_cmd(p_hwfn, p_ptt);
                if (!rc)
                        break;
                else if (rc != -EAGAIN)
                        goto err;

                spin_unlock_bh(&p_hwfn->mcp_info->cmd_lock);
                udelay(delay);
        } while (++cnt < max_retries);

        if (cnt >= max_retries) {
                DP_NOTICE(p_hwfn,
                          "The MFW mailbox is occupied by an uncompleted command. Failed to send command 0x%08x [param 0x%08x].\n",
                          p_mb_params->cmd, p_mb_params->param);
                return -EAGAIN;
        }

        /* Send the mailbox command */
        qed_mcp_reread_offsets(p_hwfn, p_ptt);
        seq_num = ++p_hwfn->mcp_info->drv_mb_seq;
        p_cmd_elem = qed_mcp_cmd_add_elem(p_hwfn, p_mb_params, seq_num);
        if (!p_cmd_elem) {
                rc = -ENOMEM;
                goto err;
        }

        __qed_mcp_cmd_and_union(p_hwfn, p_ptt, p_mb_params, seq_num);
        spin_unlock_bh(&p_hwfn->mcp_info->cmd_lock);

        /* Wait for the MFW response */
        do {
                /* Exit the loop if the command is already completed, or if the
                 * command is completed during this iteration.
                 * The spinlock stays locked until the list element is removed.
                 */

                udelay(delay);
                spin_lock_bh(&p_hwfn->mcp_info->cmd_lock);

                if (p_cmd_elem->b_is_completed)
                        break;

                rc = qed_mcp_update_pending_cmd(p_hwfn, p_ptt);
                if (!rc)
                        break;
                else if (rc != -EAGAIN)
                        goto err;

                spin_unlock_bh(&p_hwfn->mcp_info->cmd_lock);
        } while (++cnt < max_retries);

        if (cnt >= max_retries) {
                DP_NOTICE(p_hwfn,
                          "The MFW failed to respond to command 0x%08x [param 0x%08x].\n",
                          p_mb_params->cmd, p_mb_params->param);

                spin_lock_bh(&p_hwfn->mcp_info->cmd_lock);
                qed_mcp_cmd_del_elem(p_hwfn, p_cmd_elem);
                spin_unlock_bh(&p_hwfn->mcp_info->cmd_lock);

                return -EAGAIN;
        }

        qed_mcp_cmd_del_elem(p_hwfn, p_cmd_elem);
        spin_unlock_bh(&p_hwfn->mcp_info->cmd_lock);

        DP_VERBOSE(p_hwfn,
                   QED_MSG_SP,
                   "MFW mailbox: response 0x%08x param 0x%08x [after %d.%03d ms]\n",
                   p_mb_params->mcp_resp,
                   p_mb_params->mcp_param,
                   (cnt * delay) / 1000, (cnt * delay) % 1000);

        /* Clear the sequence number from the MFW response */
        p_mb_params->mcp_resp &= FW_MSG_CODE_MASK;

        return 0;

err:
        spin_unlock_bh(&p_hwfn->mcp_info->cmd_lock);
        return rc;
}

static int qed_mcp_cmd_and_union(struct qed_hwfn *p_hwfn,
                                 struct qed_ptt *p_ptt,
                                 struct qed_mcp_mb_params *p_mb_params)
{
        size_t union_data_size = sizeof(union drv_union_data);
        u32 max_retries = QED_DRV_MB_MAX_RETRIES;
        u32 delay = CHIP_MCP_RESP_ITER_US;

        /* MCP not initialized */
        if (!qed_mcp_is_init(p_hwfn)) {
                DP_NOTICE(p_hwfn, "MFW is not initialized!\n");
                return -EBUSY;
        }

        if (p_mb_params->data_src_size > union_data_size ||
            p_mb_params->data_dst_size > union_data_size) {
                DP_ERR(p_hwfn,
                       "The provided size is larger than the union data size [src_size %u, dst_size %u, union_data_size %zu]\n",
                       p_mb_params->data_src_size,
                       p_mb_params->data_dst_size, union_data_size);
                return -EINVAL;
        }

        return _qed_mcp_cmd_and_union(p_hwfn, p_ptt, p_mb_params, max_retries,
                                      delay);
}

int qed_mcp_cmd(struct qed_hwfn *p_hwfn,
                struct qed_ptt *p_ptt,
                u32 cmd,
                u32 param,
                u32 *o_mcp_resp,
                u32 *o_mcp_param)
{
        struct qed_mcp_mb_params mb_params;
        int rc;

        memset(&mb_params, 0, sizeof(mb_params));
        mb_params.cmd = cmd;
        mb_params.param = param;

        rc = qed_mcp_cmd_and_union(p_hwfn, p_ptt, &mb_params);
        if (rc)
                return rc;

        *o_mcp_resp = mb_params.mcp_resp;
        *o_mcp_param = mb_params.mcp_param;

        return 0;
}

int qed_mcp_nvm_wr_cmd(struct qed_hwfn *p_hwfn,
                       struct qed_ptt *p_ptt,
                       u32 cmd,
                       u32 param,
                       u32 *o_mcp_resp,
                       u32 *o_mcp_param, u32 i_txn_size, u32 *i_buf)
{
        struct qed_mcp_mb_params mb_params;
        int rc;

        memset(&mb_params, 0, sizeof(mb_params));
        mb_params.cmd = cmd;
        mb_params.param = param;
        mb_params.p_data_src = i_buf;
        mb_params.data_src_size = (u8)i_txn_size;
        rc = qed_mcp_cmd_and_union(p_hwfn, p_ptt, &mb_params);
        if (rc)
                return rc;

        *o_mcp_resp = mb_params.mcp_resp;
        *o_mcp_param = mb_params.mcp_param;

        return 0;
}

int qed_mcp_nvm_rd_cmd(struct qed_hwfn *p_hwfn,
                       struct qed_ptt *p_ptt,
                       u32 cmd,
                       u32 param,
                       u32 *o_mcp_resp,
                       u32 *o_mcp_param, u32 *o_txn_size, u32 *o_buf)
{
        struct qed_mcp_mb_params mb_params;
        u8 raw_data[MCP_DRV_NVM_BUF_LEN];
        int rc;

        memset(&mb_params, 0, sizeof(mb_params));
        mb_params.cmd = cmd;
        mb_params.param = param;
        mb_params.p_data_dst = raw_data;

        /* Use the maximal value since the actual one is part of the response */
        mb_params.data_dst_size = MCP_DRV_NVM_BUF_LEN;

        rc = qed_mcp_cmd_and_union(p_hwfn, p_ptt, &mb_params);
        if (rc)
                return rc;

        *o_mcp_resp = mb_params.mcp_resp;
        *o_mcp_param = mb_params.mcp_param;

        *o_txn_size = *o_mcp_param;
        memcpy(o_buf, raw_data, *o_txn_size);

        return 0;
}

static bool
qed_mcp_can_force_load(u8 drv_role,
                       u8 exist_drv_role,
                       enum qed_override_force_load override_force_load)
{
        bool can_force_load = false;

        switch (override_force_load) {
        case QED_OVERRIDE_FORCE_LOAD_ALWAYS:
                can_force_load = true;
                break;
        case QED_OVERRIDE_FORCE_LOAD_NEVER:
                can_force_load = false;
                break;
        default:
                can_force_load = (drv_role == DRV_ROLE_OS &&
                                  exist_drv_role == DRV_ROLE_PREBOOT) ||
                                 (drv_role == DRV_ROLE_KDUMP &&
                                  exist_drv_role == DRV_ROLE_OS);
                break;
        }

        return can_force_load;
}

static int qed_mcp_cancel_load_req(struct qed_hwfn *p_hwfn,
                                   struct qed_ptt *p_ptt)
{
        u32 resp = 0, param = 0;
        int rc;

        rc = qed_mcp_cmd(p_hwfn, p_ptt, DRV_MSG_CODE_CANCEL_LOAD_REQ, 0,
                         &resp, &param);
        if (rc)
                DP_NOTICE(p_hwfn,
                          "Failed to send cancel load request, rc = %d\n", rc);

        return rc;
}

#define CONFIG_QEDE_BITMAP_IDX          BIT(0)
#define CONFIG_QED_SRIOV_BITMAP_IDX     BIT(1)
#define CONFIG_QEDR_BITMAP_IDX          BIT(2)
#define CONFIG_QEDF_BITMAP_IDX          BIT(4)
#define CONFIG_QEDI_BITMAP_IDX          BIT(5)
#define CONFIG_QED_LL2_BITMAP_IDX       BIT(6)

static u32 qed_get_config_bitmap(void)
{
        u32 config_bitmap = 0x0;

        if (IS_ENABLED(CONFIG_QEDE))
                config_bitmap |= CONFIG_QEDE_BITMAP_IDX;

        if (IS_ENABLED(CONFIG_QED_SRIOV))
                config_bitmap |= CONFIG_QED_SRIOV_BITMAP_IDX;

        if (IS_ENABLED(CONFIG_QED_RDMA))
                config_bitmap |= CONFIG_QEDR_BITMAP_IDX;

        if (IS_ENABLED(CONFIG_QED_FCOE))
                config_bitmap |= CONFIG_QEDF_BITMAP_IDX;

        if (IS_ENABLED(CONFIG_QED_ISCSI))
                config_bitmap |= CONFIG_QEDI_BITMAP_IDX;

        if (IS_ENABLED(CONFIG_QED_LL2))
                config_bitmap |= CONFIG_QED_LL2_BITMAP_IDX;

        return config_bitmap;
}

struct qed_load_req_in_params {
        u8 hsi_ver;
#define QED_LOAD_REQ_HSI_VER_DEFAULT    0
#define QED_LOAD_REQ_HSI_VER_1          1
        u32 drv_ver_0;
        u32 drv_ver_1;
        u32 fw_ver;
        u8 drv_role;
        u8 timeout_val;
        u8 force_cmd;
        bool avoid_eng_reset;
};

struct qed_load_req_out_params {
        u32 load_code;
        u32 exist_drv_ver_0;
        u32 exist_drv_ver_1;
        u32 exist_fw_ver;
        u8 exist_drv_role;
        u8 mfw_hsi_ver;
        bool drv_exists;
};

static int
__qed_mcp_load_req(struct qed_hwfn *p_hwfn,
                   struct qed_ptt *p_ptt,
                   struct qed_load_req_in_params *p_in_params,
                   struct qed_load_req_out_params *p_out_params)
{
        struct qed_mcp_mb_params mb_params;
        struct load_req_stc load_req;
        struct load_rsp_stc load_rsp;
        u32 hsi_ver;
        int rc;

        memset(&load_req, 0, sizeof(load_req));
        load_req.drv_ver_0 = p_in_params->drv_ver_0;
        load_req.drv_ver_1 = p_in_params->drv_ver_1;
        load_req.fw_ver = p_in_params->fw_ver;
        QED_MFW_SET_FIELD(load_req.misc0, LOAD_REQ_ROLE, p_in_params->drv_role);
        QED_MFW_SET_FIELD(load_req.misc0, LOAD_REQ_LOCK_TO,
                          p_in_params->timeout_val);
        QED_MFW_SET_FIELD(load_req.misc0, LOAD_REQ_FORCE,
                          p_in_params->force_cmd);
        QED_MFW_SET_FIELD(load_req.misc0, LOAD_REQ_FLAGS0,
                          p_in_params->avoid_eng_reset);

        hsi_ver = (p_in_params->hsi_ver == QED_LOAD_REQ_HSI_VER_DEFAULT) ?
                  DRV_ID_MCP_HSI_VER_CURRENT :
                  (p_in_params->hsi_ver << DRV_ID_MCP_HSI_VER_SHIFT);

        memset(&mb_params, 0, sizeof(mb_params));
        mb_params.cmd = DRV_MSG_CODE_LOAD_REQ;
        mb_params.param = PDA_COMP | hsi_ver | p_hwfn->cdev->drv_type;
        mb_params.p_data_src = &load_req;
        mb_params.data_src_size = sizeof(load_req);
        mb_params.p_data_dst = &load_rsp;
        mb_params.data_dst_size = sizeof(load_rsp);

        DP_VERBOSE(p_hwfn, QED_MSG_SP,
                   "Load Request: param 0x%08x [init_hw %d, drv_type %d, hsi_ver %d, pda 0x%04x]\n",
                   mb_params.param,
                   QED_MFW_GET_FIELD(mb_params.param, DRV_ID_DRV_INIT_HW),
                   QED_MFW_GET_FIELD(mb_params.param, DRV_ID_DRV_TYPE),
                   QED_MFW_GET_FIELD(mb_params.param, DRV_ID_MCP_HSI_VER),
                   QED_MFW_GET_FIELD(mb_params.param, DRV_ID_PDA_COMP_VER));

        if (p_in_params->hsi_ver != QED_LOAD_REQ_HSI_VER_1) {
                DP_VERBOSE(p_hwfn, QED_MSG_SP,
                           "Load Request: drv_ver 0x%08x_0x%08x, fw_ver 0x%08x, misc0 0x%08x [role %d, timeout %d, force %d, flags0 0x%x]\n",
                           load_req.drv_ver_0,
                           load_req.drv_ver_1,
                           load_req.fw_ver,
                           load_req.misc0,
                           QED_MFW_GET_FIELD(load_req.misc0, LOAD_REQ_ROLE),
                           QED_MFW_GET_FIELD(load_req.misc0,
                                             LOAD_REQ_LOCK_TO),
                           QED_MFW_GET_FIELD(load_req.misc0, LOAD_REQ_FORCE),
                           QED_MFW_GET_FIELD(load_req.misc0, LOAD_REQ_FLAGS0));
        }

        rc = qed_mcp_cmd_and_union(p_hwfn, p_ptt, &mb_params);
        if (rc) {
                DP_NOTICE(p_hwfn, "Failed to send load request, rc = %d\n", rc);
                return rc;
        }

        DP_VERBOSE(p_hwfn, QED_MSG_SP,
                   "Load Response: resp 0x%08x\n", mb_params.mcp_resp);
        p_out_params->load_code = mb_params.mcp_resp;

        if (p_in_params->hsi_ver != QED_LOAD_REQ_HSI_VER_1 &&
            p_out_params->load_code != FW_MSG_CODE_DRV_LOAD_REFUSED_HSI_1) {
                DP_VERBOSE(p_hwfn,
                           QED_MSG_SP,
                           "Load Response: exist_drv_ver 0x%08x_0x%08x, exist_fw_ver 0x%08x, misc0 0x%08x [exist_role %d, mfw_hsi %d, flags0 0x%x]\n",
                           load_rsp.drv_ver_0,
                           load_rsp.drv_ver_1,
                           load_rsp.fw_ver,
                           load_rsp.misc0,
                           QED_MFW_GET_FIELD(load_rsp.misc0, LOAD_RSP_ROLE),
                           QED_MFW_GET_FIELD(load_rsp.misc0, LOAD_RSP_HSI),
                           QED_MFW_GET_FIELD(load_rsp.misc0, LOAD_RSP_FLAGS0));

                p_out_params->exist_drv_ver_0 = load_rsp.drv_ver_0;
                p_out_params->exist_drv_ver_1 = load_rsp.drv_ver_1;
                p_out_params->exist_fw_ver = load_rsp.fw_ver;
                p_out_params->exist_drv_role =
                    QED_MFW_GET_FIELD(load_rsp.misc0, LOAD_RSP_ROLE);
                p_out_params->mfw_hsi_ver =
                    QED_MFW_GET_FIELD(load_rsp.misc0, LOAD_RSP_HSI);
                p_out_params->drv_exists =
                    QED_MFW_GET_FIELD(load_rsp.misc0, LOAD_RSP_FLAGS0) &
                    LOAD_RSP_FLAGS0_DRV_EXISTS;
        }

        return 0;
}

static int eocre_get_mfw_drv_role(struct qed_hwfn *p_hwfn,
                                  enum qed_drv_role drv_role,
                                  u8 *p_mfw_drv_role)
{
        switch (drv_role) {
        case QED_DRV_ROLE_OS:
                *p_mfw_drv_role = DRV_ROLE_OS;
                break;
        case QED_DRV_ROLE_KDUMP:
                *p_mfw_drv_role = DRV_ROLE_KDUMP;
                break;
        default:
                DP_ERR(p_hwfn, "Unexpected driver role %d\n", drv_role);
                return -EINVAL;
        }

        return 0;
}

enum qed_load_req_force {
        QED_LOAD_REQ_FORCE_NONE,
        QED_LOAD_REQ_FORCE_PF,
        QED_LOAD_REQ_FORCE_ALL,
};

static void qed_get_mfw_force_cmd(struct qed_hwfn *p_hwfn,

                                  enum qed_load_req_force force_cmd,
                                  u8 *p_mfw_force_cmd)
{
        switch (force_cmd) {
        case QED_LOAD_REQ_FORCE_NONE:
                *p_mfw_force_cmd = LOAD_REQ_FORCE_NONE;
                break;
        case QED_LOAD_REQ_FORCE_PF:
                *p_mfw_force_cmd = LOAD_REQ_FORCE_PF;
                break;
        case QED_LOAD_REQ_FORCE_ALL:
                *p_mfw_force_cmd = LOAD_REQ_FORCE_ALL;
                break;
        }
}

int qed_mcp_load_req(struct qed_hwfn *p_hwfn,
                     struct qed_ptt *p_ptt,
                     struct qed_load_req_params *p_params)
{
        struct qed_load_req_out_params out_params;
        struct qed_load_req_in_params in_params;
        u8 mfw_drv_role, mfw_force_cmd;
        int rc;

        memset(&in_params, 0, sizeof(in_params));
        in_params.hsi_ver = QED_LOAD_REQ_HSI_VER_DEFAULT;
        in_params.drv_ver_0 = QED_VERSION;
        in_params.drv_ver_1 = qed_get_config_bitmap();
        in_params.fw_ver = STORM_FW_VERSION;
        rc = eocre_get_mfw_drv_role(p_hwfn, p_params->drv_role, &mfw_drv_role);
        if (rc)
                return rc;

        in_params.drv_role = mfw_drv_role;
        in_params.timeout_val = p_params->timeout_val;
        qed_get_mfw_force_cmd(p_hwfn,
                              QED_LOAD_REQ_FORCE_NONE, &mfw_force_cmd);

        in_params.force_cmd = mfw_force_cmd;
        in_params.avoid_eng_reset = p_params->avoid_eng_reset;

        memset(&out_params, 0, sizeof(out_params));
        rc = __qed_mcp_load_req(p_hwfn, p_ptt, &in_params, &out_params);
        if (rc)
                return rc;

        /* First handle cases where another load request should/might be sent:
         * - MFW expects the old interface [HSI version = 1]
         * - MFW responds that a force load request is required
         */
        if (out_params.load_code == FW_MSG_CODE_DRV_LOAD_REFUSED_HSI_1) {
                DP_INFO(p_hwfn,
                        "MFW refused a load request due to HSI > 1. Resending with HSI = 1\n");

                in_params.hsi_ver = QED_LOAD_REQ_HSI_VER_1;
                memset(&out_params, 0, sizeof(out_params));
                rc = __qed_mcp_load_req(p_hwfn, p_ptt, &in_params, &out_params);
                if (rc)
                        return rc;
        } else if (out_params.load_code ==
                   FW_MSG_CODE_DRV_LOAD_REFUSED_REQUIRES_FORCE) {
                if (qed_mcp_can_force_load(in_params.drv_role,
                                           out_params.exist_drv_role,
                                           p_params->override_force_load)) {
                        DP_INFO(p_hwfn,
                                "A force load is required [{role, fw_ver, drv_ver}: loading={%d, 0x%08x, x%08x_0x%08x}, existing={%d, 0x%08x, 0x%08x_0x%08x}]\n",
                                in_params.drv_role, in_params.fw_ver,
                                in_params.drv_ver_0, in_params.drv_ver_1,
                                out_params.exist_drv_role,
                                out_params.exist_fw_ver,
                                out_params.exist_drv_ver_0,
                                out_params.exist_drv_ver_1);

                        qed_get_mfw_force_cmd(p_hwfn,
                                              QED_LOAD_REQ_FORCE_ALL,
                                              &mfw_force_cmd);

                        in_params.force_cmd = mfw_force_cmd;
                        memset(&out_params, 0, sizeof(out_params));
                        rc = __qed_mcp_load_req(p_hwfn, p_ptt, &in_params,
                                                &out_params);
                        if (rc)
                                return rc;
                } else {
                        DP_NOTICE(p_hwfn,
                                  "A force load is required [{role, fw_ver, drv_ver}: loading={%d, 0x%08x, x%08x_0x%08x}, existing={%d, 0x%08x, 0x%08x_0x%08x}] - Avoid\n",
                                  in_params.drv_role, in_params.fw_ver,
                                  in_params.drv_ver_0, in_params.drv_ver_1,
                                  out_params.exist_drv_role,
                                  out_params.exist_fw_ver,
                                  out_params.exist_drv_ver_0,
                                  out_params.exist_drv_ver_1);
                        DP_NOTICE(p_hwfn,
                                  "Avoid sending a force load request to prevent disruption of active PFs\n");

                        qed_mcp_cancel_load_req(p_hwfn, p_ptt);
                        return -EBUSY;
                }
        }

        /* Now handle the other types of responses.
         * The "REFUSED_HSI_1" and "REFUSED_REQUIRES_FORCE" responses are not
         * expected here after the additional revised load requests were sent.
         */
        switch (out_params.load_code) {
        case FW_MSG_CODE_DRV_LOAD_ENGINE:
        case FW_MSG_CODE_DRV_LOAD_PORT:
        case FW_MSG_CODE_DRV_LOAD_FUNCTION:
                if (out_params.mfw_hsi_ver != QED_LOAD_REQ_HSI_VER_1 &&
                    out_params.drv_exists) {
                        /* The role and fw/driver version match, but the PF is
                         * already loaded and has not been unloaded gracefully.
                         */
                        DP_NOTICE(p_hwfn,
                                  "PF is already loaded\n");
                        return -EINVAL;
                }
                break;
        default:
                DP_NOTICE(p_hwfn,
                          "Unexpected refusal to load request [resp 0x%08x]. Aborting.\n",
                          out_params.load_code);
                return -EBUSY;
        }

        p_params->load_code = out_params.load_code;

        return 0;
}

int qed_mcp_unload_req(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
{
        u32 wol_param, mcp_resp, mcp_param;

        switch (p_hwfn->cdev->wol_config) {
        case QED_OV_WOL_DISABLED:
                wol_param = DRV_MB_PARAM_UNLOAD_WOL_DISABLED;
                break;
        case QED_OV_WOL_ENABLED:
                wol_param = DRV_MB_PARAM_UNLOAD_WOL_ENABLED;
                break;
        default:
                DP_NOTICE(p_hwfn,
                          "Unknown WoL configuration %02x\n",
                          p_hwfn->cdev->wol_config);
                /* Fallthrough */
        case QED_OV_WOL_DEFAULT:
                wol_param = DRV_MB_PARAM_UNLOAD_WOL_MCP;
        }

        return qed_mcp_cmd(p_hwfn, p_ptt, DRV_MSG_CODE_UNLOAD_REQ, wol_param,
                           &mcp_resp, &mcp_param);
}

int qed_mcp_unload_done(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
{
        struct qed_mcp_mb_params mb_params;
        struct mcp_mac wol_mac;

        memset(&mb_params, 0, sizeof(mb_params));
        mb_params.cmd = DRV_MSG_CODE_UNLOAD_DONE;

        /* Set the primary MAC if WoL is enabled */
        if (p_hwfn->cdev->wol_config == QED_OV_WOL_ENABLED) {
                u8 *p_mac = p_hwfn->cdev->wol_mac;

                memset(&wol_mac, 0, sizeof(wol_mac));
                wol_mac.mac_upper = p_mac[0] << 8 | p_mac[1];
                wol_mac.mac_lower = p_mac[2] << 24 | p_mac[3] << 16 |
                                    p_mac[4] << 8 | p_mac[5];

                DP_VERBOSE(p_hwfn,
                           (QED_MSG_SP | NETIF_MSG_IFDOWN),
                           "Setting WoL MAC: %pM --> [%08x,%08x]\n",
                           p_mac, wol_mac.mac_upper, wol_mac.mac_lower);

                mb_params.p_data_src = &wol_mac;
                mb_params.data_src_size = sizeof(wol_mac);
        }

        return qed_mcp_cmd_and_union(p_hwfn, p_ptt, &mb_params);
}

static void qed_mcp_handle_vf_flr(struct qed_hwfn *p_hwfn,
                                  struct qed_ptt *p_ptt)
{
        u32 addr = SECTION_OFFSIZE_ADDR(p_hwfn->mcp_info->public_base,
                                        PUBLIC_PATH);
        u32 mfw_path_offsize = qed_rd(p_hwfn, p_ptt, addr);
        u32 path_addr = SECTION_ADDR(mfw_path_offsize,
                                     QED_PATH_ID(p_hwfn));
        u32 disabled_vfs[VF_MAX_STATIC / 32];
        int i;

        DP_VERBOSE(p_hwfn,
                   QED_MSG_SP,
                   "Reading Disabled VF information from [offset %08x], path_addr %08x\n",
                   mfw_path_offsize, path_addr);

        for (i = 0; i < (VF_MAX_STATIC / 32); i++) {
                disabled_vfs[i] = qed_rd(p_hwfn, p_ptt,
                                         path_addr +
                                         offsetof(struct public_path,
                                                  mcp_vf_disabled) +
                                         sizeof(u32) * i);
                DP_VERBOSE(p_hwfn, (QED_MSG_SP | QED_MSG_IOV),
                           "FLR-ed VFs [%08x,...,%08x] - %08x\n",
                           i * 32, (i + 1) * 32 - 1, disabled_vfs[i]);
        }

        if (qed_iov_mark_vf_flr(p_hwfn, disabled_vfs))
                qed_schedule_iov(p_hwfn, QED_IOV_WQ_FLR_FLAG);
}

int qed_mcp_ack_vf_flr(struct qed_hwfn *p_hwfn,
                       struct qed_ptt *p_ptt, u32 *vfs_to_ack)
{
        u32 addr = SECTION_OFFSIZE_ADDR(p_hwfn->mcp_info->public_base,
                                        PUBLIC_FUNC);
        u32 mfw_func_offsize = qed_rd(p_hwfn, p_ptt, addr);
        u32 func_addr = SECTION_ADDR(mfw_func_offsize,
                                     MCP_PF_ID(p_hwfn));
        struct qed_mcp_mb_params mb_params;
        int rc;
        int i;

        for (i = 0; i < (VF_MAX_STATIC / 32); i++)
                DP_VERBOSE(p_hwfn, (QED_MSG_SP | QED_MSG_IOV),
                           "Acking VFs [%08x,...,%08x] - %08x\n",
                           i * 32, (i + 1) * 32 - 1, vfs_to_ack[i]);

        memset(&mb_params, 0, sizeof(mb_params));
        mb_params.cmd = DRV_MSG_CODE_VF_DISABLED_DONE;
        mb_params.p_data_src = vfs_to_ack;
        mb_params.data_src_size = VF_MAX_STATIC / 8;
        rc = qed_mcp_cmd_and_union(p_hwfn, p_ptt, &mb_params);
        if (rc) {
                DP_NOTICE(p_hwfn, "Failed to pass ACK for VF flr to MFW\n");
                return -EBUSY;
        }

        /* Clear the ACK bits */
        for (i = 0; i < (VF_MAX_STATIC / 32); i++)
                qed_wr(p_hwfn, p_ptt,
                       func_addr +
                       offsetof(struct public_func, drv_ack_vf_disabled) +
                       i * sizeof(u32), 0);

        return rc;
}

static void qed_mcp_handle_transceiver_change(struct qed_hwfn *p_hwfn,
                                              struct qed_ptt *p_ptt)
{
        u32 transceiver_state;

        transceiver_state = qed_rd(p_hwfn, p_ptt,
                                   p_hwfn->mcp_info->port_addr +
                                   offsetof(struct public_port,
                                            transceiver_data));

        DP_VERBOSE(p_hwfn,
                   (NETIF_MSG_HW | QED_MSG_SP),
                   "Received transceiver state update [0x%08x] from mfw [Addr 0x%x]\n",
                   transceiver_state,
                   (u32)(p_hwfn->mcp_info->port_addr +
                          offsetof(struct public_port, transceiver_data)));

        transceiver_state = GET_FIELD(transceiver_state,
                                      ETH_TRANSCEIVER_STATE);

        if (transceiver_state == ETH_TRANSCEIVER_STATE_PRESENT)
                DP_NOTICE(p_hwfn, "Transceiver is present.\n");
        else
                DP_NOTICE(p_hwfn, "Transceiver is unplugged.\n");
}

static void qed_mcp_read_eee_config(struct qed_hwfn *p_hwfn,
                                    struct qed_ptt *p_ptt,
                                    struct qed_mcp_link_state *p_link)
{
        u32 eee_status, val;

        p_link->eee_adv_caps = 0;
        p_link->eee_lp_adv_caps = 0;
        eee_status = qed_rd(p_hwfn,
                            p_ptt,
                            p_hwfn->mcp_info->port_addr +
                            offsetof(struct public_port, eee_status));
        p_link->eee_active = !!(eee_status & EEE_ACTIVE_BIT);
        val = (eee_status & EEE_LD_ADV_STATUS_MASK) >> EEE_LD_ADV_STATUS_OFFSET;
        if (val & EEE_1G_ADV)
                p_link->eee_adv_caps |= QED_EEE_1G_ADV;
        if (val & EEE_10G_ADV)
                p_link->eee_adv_caps |= QED_EEE_10G_ADV;
        val = (eee_status & EEE_LP_ADV_STATUS_MASK) >> EEE_LP_ADV_STATUS_OFFSET;
        if (val & EEE_1G_ADV)
                p_link->eee_lp_adv_caps |= QED_EEE_1G_ADV;
        if (val & EEE_10G_ADV)
                p_link->eee_lp_adv_caps |= QED_EEE_10G_ADV;
}

static void qed_mcp_handle_link_change(struct qed_hwfn *p_hwfn,
                                       struct qed_ptt *p_ptt, bool b_reset)
{
        struct qed_mcp_link_state *p_link;
        u8 max_bw, min_bw;
        u32 status = 0;

        /* Prevent SW/attentions from doing this at the same time */
        spin_lock_bh(&p_hwfn->mcp_info->link_lock);

        p_link = &p_hwfn->mcp_info->link_output;
        memset(p_link, 0, sizeof(*p_link));
        if (!b_reset) {
                status = qed_rd(p_hwfn, p_ptt,
                                p_hwfn->mcp_info->port_addr +
                                offsetof(struct public_port, link_status));
                DP_VERBOSE(p_hwfn, (NETIF_MSG_LINK | QED_MSG_SP),
                           "Received link update [0x%08x] from mfw [Addr 0x%x]\n",
                           status,
                           (u32)(p_hwfn->mcp_info->port_addr +
                                 offsetof(struct public_port, link_status)));
        } else {
                DP_VERBOSE(p_hwfn, NETIF_MSG_LINK,
                           "Resetting link indications\n");
                goto out;
        }

        if (p_hwfn->b_drv_link_init)
                p_link->link_up = !!(status & LINK_STATUS_LINK_UP);
        else
                p_link->link_up = false;

        p_link->full_duplex = true;
        switch ((status & LINK_STATUS_SPEED_AND_DUPLEX_MASK)) {
        case LINK_STATUS_SPEED_AND_DUPLEX_100G:
                p_link->speed = 100000;
                break;
        case LINK_STATUS_SPEED_AND_DUPLEX_50G:
                p_link->speed = 50000;
                break;
        case LINK_STATUS_SPEED_AND_DUPLEX_40G:
                p_link->speed = 40000;
                break;
        case LINK_STATUS_SPEED_AND_DUPLEX_25G:
                p_link->speed = 25000;
                break;
        case LINK_STATUS_SPEED_AND_DUPLEX_20G:
                p_link->speed = 20000;
                break;
        case LINK_STATUS_SPEED_AND_DUPLEX_10G:
                p_link->speed = 10000;
                break;
        case LINK_STATUS_SPEED_AND_DUPLEX_1000THD:
                p_link->full_duplex = false;
        /* Fall-through */
        case LINK_STATUS_SPEED_AND_DUPLEX_1000TFD:
                p_link->speed = 1000;
                break;
        default:
                p_link->speed = 0;
        }

        if (p_link->link_up && p_link->speed)
                p_link->line_speed = p_link->speed;
        else
                p_link->line_speed = 0;

        max_bw = p_hwfn->mcp_info->func_info.bandwidth_max;
        min_bw = p_hwfn->mcp_info->func_info.bandwidth_min;

        /* Max bandwidth configuration */
        __qed_configure_pf_max_bandwidth(p_hwfn, p_ptt, p_link, max_bw);

        /* Min bandwidth configuration */
        __qed_configure_pf_min_bandwidth(p_hwfn, p_ptt, p_link, min_bw);
        qed_configure_vp_wfq_on_link_change(p_hwfn->cdev, p_ptt,
                                            p_link->min_pf_rate);

        p_link->an = !!(status & LINK_STATUS_AUTO_NEGOTIATE_ENABLED);
        p_link->an_complete = !!(status &
                                 LINK_STATUS_AUTO_NEGOTIATE_COMPLETE);
        p_link->parallel_detection = !!(status &
                                        LINK_STATUS_PARALLEL_DETECTION_USED);
        p_link->pfc_enabled = !!(status & LINK_STATUS_PFC_ENABLED);

        p_link->partner_adv_speed |=
                (status & LINK_STATUS_LINK_PARTNER_1000TFD_CAPABLE) ?
                QED_LINK_PARTNER_SPEED_1G_FD : 0;
        p_link->partner_adv_speed |=
                (status & LINK_STATUS_LINK_PARTNER_1000THD_CAPABLE) ?
                QED_LINK_PARTNER_SPEED_1G_HD : 0;
        p_link->partner_adv_speed |=
                (status & LINK_STATUS_LINK_PARTNER_10G_CAPABLE) ?
                QED_LINK_PARTNER_SPEED_10G : 0;
        p_link->partner_adv_speed |=
                (status & LINK_STATUS_LINK_PARTNER_20G_CAPABLE) ?
                QED_LINK_PARTNER_SPEED_20G : 0;
        p_link->partner_adv_speed |=
                (status & LINK_STATUS_LINK_PARTNER_25G_CAPABLE) ?
                QED_LINK_PARTNER_SPEED_25G : 0;
        p_link->partner_adv_speed |=
                (status & LINK_STATUS_LINK_PARTNER_40G_CAPABLE) ?
                QED_LINK_PARTNER_SPEED_40G : 0;
        p_link->partner_adv_speed |=
                (status & LINK_STATUS_LINK_PARTNER_50G_CAPABLE) ?
                QED_LINK_PARTNER_SPEED_50G : 0;
        p_link->partner_adv_speed |=
                (status & LINK_STATUS_LINK_PARTNER_100G_CAPABLE) ?
                QED_LINK_PARTNER_SPEED_100G : 0;

        p_link->partner_tx_flow_ctrl_en =
                !!(status & LINK_STATUS_TX_FLOW_CONTROL_ENABLED);
        p_link->partner_rx_flow_ctrl_en =
                !!(status & LINK_STATUS_RX_FLOW_CONTROL_ENABLED);

        switch (status & LINK_STATUS_LINK_PARTNER_FLOW_CONTROL_MASK) {
        case LINK_STATUS_LINK_PARTNER_SYMMETRIC_PAUSE:
                p_link->partner_adv_pause = QED_LINK_PARTNER_SYMMETRIC_PAUSE;
                break;
        case LINK_STATUS_LINK_PARTNER_ASYMMETRIC_PAUSE:
                p_link->partner_adv_pause = QED_LINK_PARTNER_ASYMMETRIC_PAUSE;
                break;
        case LINK_STATUS_LINK_PARTNER_BOTH_PAUSE:
                p_link->partner_adv_pause = QED_LINK_PARTNER_BOTH_PAUSE;
                break;
        default:
                p_link->partner_adv_pause = 0;
        }

        p_link->sfp_tx_fault = !!(status & LINK_STATUS_SFP_TX_FAULT);

        if (p_hwfn->mcp_info->capabilities & FW_MB_PARAM_FEATURE_SUPPORT_EEE)
                qed_mcp_read_eee_config(p_hwfn, p_ptt, p_link);

        qed_link_update(p_hwfn);
out:
        spin_unlock_bh(&p_hwfn->mcp_info->link_lock);
}

int qed_mcp_set_link(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt, bool b_up)
{
        struct qed_mcp_link_params *params = &p_hwfn->mcp_info->link_input;
        struct qed_mcp_mb_params mb_params;
        struct eth_phy_cfg phy_cfg;
        int rc = 0;
        u32 cmd;

        /* Set the shmem configuration according to params */
        memset(&phy_cfg, 0, sizeof(phy_cfg));
        cmd = b_up ? DRV_MSG_CODE_INIT_PHY : DRV_MSG_CODE_LINK_RESET;
        if (!params->speed.autoneg)
                phy_cfg.speed = params->speed.forced_speed;
        phy_cfg.pause |= (params->pause.autoneg) ? ETH_PAUSE_AUTONEG : 0;
        phy_cfg.pause |= (params->pause.forced_rx) ? ETH_PAUSE_RX : 0;
        phy_cfg.pause |= (params->pause.forced_tx) ? ETH_PAUSE_TX : 0;
        phy_cfg.adv_speed = params->speed.advertised_speeds;
        phy_cfg.loopback_mode = params->loopback_mode;
        if (p_hwfn->mcp_info->capabilities & FW_MB_PARAM_FEATURE_SUPPORT_EEE) {
                if (params->eee.enable)
                        phy_cfg.eee_cfg |= EEE_CFG_EEE_ENABLED;
                if (params->eee.tx_lpi_enable)
                        phy_cfg.eee_cfg |= EEE_CFG_TX_LPI;
                if (params->eee.adv_caps & QED_EEE_1G_ADV)
                        phy_cfg.eee_cfg |= EEE_CFG_ADV_SPEED_1G;
                if (params->eee.adv_caps & QED_EEE_10G_ADV)
                        phy_cfg.eee_cfg |= EEE_CFG_ADV_SPEED_10G;
                phy_cfg.eee_cfg |= (params->eee.tx_lpi_timer <<
                                    EEE_TX_TIMER_USEC_OFFSET) &
                                   EEE_TX_TIMER_USEC_MASK;
        }

        p_hwfn->b_drv_link_init = b_up;

        if (b_up) {
                DP_VERBOSE(p_hwfn, NETIF_MSG_LINK,
                           "Configuring Link: Speed 0x%08x, Pause 0x%08x, adv_speed 0x%08x, loopback 0x%08x, features 0x%08x\n",
                           phy_cfg.speed,
                           phy_cfg.pause,
                           phy_cfg.adv_speed,
                           phy_cfg.loopback_mode,
                           phy_cfg.feature_config_flags);
        } else {
                DP_VERBOSE(p_hwfn, NETIF_MSG_LINK,
                           "Resetting link\n");
        }

        memset(&mb_params, 0, sizeof(mb_params));
        mb_params.cmd = cmd;
        mb_params.p_data_src = &phy_cfg;
        mb_params.data_src_size = sizeof(phy_cfg);
        rc = qed_mcp_cmd_and_union(p_hwfn, p_ptt, &mb_params);

        /* if mcp fails to respond we must abort */
        if (rc) {
                DP_ERR(p_hwfn, "MCP response failure, aborting\n");
                return rc;
        }

        /* Mimic link-change attention, done for several reasons:
         *  - On reset, there's no guarantee MFW would trigger
         *    an attention.
         *  - On initialization, older MFWs might not indicate link change
         *    during LFA, so we'll never get an UP indication.
         */
        qed_mcp_handle_link_change(p_hwfn, p_ptt, !b_up);

        return 0;
}

static void qed_mcp_send_protocol_stats(struct qed_hwfn *p_hwfn,
                                        struct qed_ptt *p_ptt,
                                        enum MFW_DRV_MSG_TYPE type)
{
        enum qed_mcp_protocol_type stats_type;
        union qed_mcp_protocol_stats stats;
        struct qed_mcp_mb_params mb_params;
        u32 hsi_param;

        switch (type) {
        case MFW_DRV_MSG_GET_LAN_STATS:
                stats_type = QED_MCP_LAN_STATS;
                hsi_param = DRV_MSG_CODE_STATS_TYPE_LAN;
                break;
        case MFW_DRV_MSG_GET_FCOE_STATS:
                stats_type = QED_MCP_FCOE_STATS;
                hsi_param = DRV_MSG_CODE_STATS_TYPE_FCOE;
                break;
        case MFW_DRV_MSG_GET_ISCSI_STATS:
                stats_type = QED_MCP_ISCSI_STATS;
                hsi_param = DRV_MSG_CODE_STATS_TYPE_ISCSI;
                break;
        case MFW_DRV_MSG_GET_RDMA_STATS:
                stats_type = QED_MCP_RDMA_STATS;
                hsi_param = DRV_MSG_CODE_STATS_TYPE_RDMA;
                break;
        default:
                DP_NOTICE(p_hwfn, "Invalid protocol type %d\n", type);
                return;
        }

        qed_get_protocol_stats(p_hwfn->cdev, stats_type, &stats);

        memset(&mb_params, 0, sizeof(mb_params));
        mb_params.cmd = DRV_MSG_CODE_GET_STATS;
        mb_params.param = hsi_param;
        mb_params.p_data_src = &stats;
        mb_params.data_src_size = sizeof(stats);
        qed_mcp_cmd_and_union(p_hwfn, p_ptt, &mb_params);
}

static void qed_read_pf_bandwidth(struct qed_hwfn *p_hwfn,
                                  struct public_func *p_shmem_info)
{
        struct qed_mcp_function_info *p_info;

        p_info = &p_hwfn->mcp_info->func_info;

        p_info->bandwidth_min = (p_shmem_info->config &
                                 FUNC_MF_CFG_MIN_BW_MASK) >>
                                        FUNC_MF_CFG_MIN_BW_SHIFT;
        if (p_info->bandwidth_min < 1 || p_info->bandwidth_min > 100) {
                DP_INFO(p_hwfn,
                        "bandwidth minimum out of bounds [%02x]. Set to 1\n",
                        p_info->bandwidth_min);
                p_info->bandwidth_min = 1;
        }

        p_info->bandwidth_max = (p_shmem_info->config &
                                 FUNC_MF_CFG_MAX_BW_MASK) >>
                                        FUNC_MF_CFG_MAX_BW_SHIFT;
        if (p_info->bandwidth_max < 1 || p_info->bandwidth_max > 100) {
                DP_INFO(p_hwfn,
                        "bandwidth maximum out of bounds [%02x]. Set to 100\n",
                        p_info->bandwidth_max);
                p_info->bandwidth_max = 100;
        }
}

static u32 qed_mcp_get_shmem_func(struct qed_hwfn *p_hwfn,
                                  struct qed_ptt *p_ptt,
                                  struct public_func *p_data, int pfid)
{
        u32 addr = SECTION_OFFSIZE_ADDR(p_hwfn->mcp_info->public_base,
                                        PUBLIC_FUNC);
        u32 mfw_path_offsize = qed_rd(p_hwfn, p_ptt, addr);
        u32 func_addr = SECTION_ADDR(mfw_path_offsize, pfid);
        u32 i, size;

        memset(p_data, 0, sizeof(*p_data));

        size = min_t(u32, sizeof(*p_data), QED_SECTION_SIZE(mfw_path_offsize));
        for (i = 0; i < size / sizeof(u32); i++)
                ((u32 *)p_data)[i] = qed_rd(p_hwfn, p_ptt,
                                            func_addr + (i << 2));
        return size;
}

static void qed_mcp_update_bw(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
{
        struct qed_mcp_function_info *p_info;
        struct public_func shmem_info;
        u32 resp = 0, param = 0;

        qed_mcp_get_shmem_func(p_hwfn, p_ptt, &shmem_info, MCP_PF_ID(p_hwfn));

        qed_read_pf_bandwidth(p_hwfn, &shmem_info);

        p_info = &p_hwfn->mcp_info->func_info;

        qed_configure_pf_min_bandwidth(p_hwfn->cdev, p_info->bandwidth_min);
        qed_configure_pf_max_bandwidth(p_hwfn->cdev, p_info->bandwidth_max);

        /* Acknowledge the MFW */
        qed_mcp_cmd(p_hwfn, p_ptt, DRV_MSG_CODE_BW_UPDATE_ACK, 0, &resp,
                    &param);
}

static void qed_mcp_update_stag(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
{
        struct public_func shmem_info;
        u32 resp = 0, param = 0;

        qed_mcp_get_shmem_func(p_hwfn, p_ptt, &shmem_info, MCP_PF_ID(p_hwfn));

        p_hwfn->mcp_info->func_info.ovlan = (u16)shmem_info.ovlan_stag &
                                                 FUNC_MF_CFG_OV_STAG_MASK;
        p_hwfn->hw_info.ovlan = p_hwfn->mcp_info->func_info.ovlan;
        if ((p_hwfn->hw_info.hw_mode & BIT(MODE_MF_SD)) &&
            (p_hwfn->hw_info.ovlan != QED_MCP_VLAN_UNSET)) {
                qed_wr(p_hwfn, p_ptt,
                       NIG_REG_LLH_FUNC_TAG_VALUE, p_hwfn->hw_info.ovlan);
                qed_sp_pf_update_stag(p_hwfn);
        }

        /* Acknowledge the MFW */
        qed_mcp_cmd(p_hwfn, p_ptt, DRV_MSG_CODE_S_TAG_UPDATE_ACK, 0,
                    &resp, &param);
}

int qed_mcp_handle_events(struct qed_hwfn *p_hwfn,
                          struct qed_ptt *p_ptt)
{
        struct qed_mcp_info *info = p_hwfn->mcp_info;
        int rc = 0;
        bool found = false;
        u16 i;

        DP_VERBOSE(p_hwfn, QED_MSG_SP, "Received message from MFW\n");

        /* Read Messages from MFW */
        qed_mcp_read_mb(p_hwfn, p_ptt);

        /* Compare current messages to old ones */
        for (i = 0; i < info->mfw_mb_length; i++) {
                if (info->mfw_mb_cur[i] == info->mfw_mb_shadow[i])
                        continue;

                found = true;

                DP_VERBOSE(p_hwfn, NETIF_MSG_LINK,
                           "Msg [%d] - old CMD 0x%02x, new CMD 0x%02x\n",
                           i, info->mfw_mb_shadow[i], info->mfw_mb_cur[i]);

                switch (i) {
                case MFW_DRV_MSG_LINK_CHANGE:
                        qed_mcp_handle_link_change(p_hwfn, p_ptt, false);
                        break;
                case MFW_DRV_MSG_VF_DISABLED:
                        qed_mcp_handle_vf_flr(p_hwfn, p_ptt);
                        break;
                case MFW_DRV_MSG_LLDP_DATA_UPDATED:
                        qed_dcbx_mib_update_event(p_hwfn, p_ptt,
                                                  QED_DCBX_REMOTE_LLDP_MIB);
                        break;
                case MFW_DRV_MSG_DCBX_REMOTE_MIB_UPDATED:
                        qed_dcbx_mib_update_event(p_hwfn, p_ptt,
                                                  QED_DCBX_REMOTE_MIB);
                        break;
                case MFW_DRV_MSG_DCBX_OPERATIONAL_MIB_UPDATED:
                        qed_dcbx_mib_update_event(p_hwfn, p_ptt,
                                                  QED_DCBX_OPERATIONAL_MIB);
                        break;
                case MFW_DRV_MSG_TRANSCEIVER_STATE_CHANGE:
                        qed_mcp_handle_transceiver_change(p_hwfn, p_ptt);
                        break;
                case MFW_DRV_MSG_GET_LAN_STATS:
                case MFW_DRV_MSG_GET_FCOE_STATS:
                case MFW_DRV_MSG_GET_ISCSI_STATS:
                case MFW_DRV_MSG_GET_RDMA_STATS:
                        qed_mcp_send_protocol_stats(p_hwfn, p_ptt, i);
                        break;
                case MFW_DRV_MSG_BW_UPDATE:
                        qed_mcp_update_bw(p_hwfn, p_ptt);
                        break;
                case MFW_DRV_MSG_S_TAG_UPDATE:
                        qed_mcp_update_stag(p_hwfn, p_ptt);
                        break;
                        break;
                default:
                        DP_INFO(p_hwfn, "Unimplemented MFW message %d\n", i);
                        rc = -EINVAL;
                }
        }

        /* ACK everything */
        for (i = 0; i < MFW_DRV_MSG_MAX_DWORDS(info->mfw_mb_length); i++) {
                __be32 val = cpu_to_be32(((u32 *)info->mfw_mb_cur)[i]);

                /* MFW expect answer in BE, so we force write in that format */
                qed_wr(p_hwfn, p_ptt,
                       info->mfw_mb_addr + sizeof(u32) +
                       MFW_DRV_MSG_MAX_DWORDS(info->mfw_mb_length) *
                       sizeof(u32) + i * sizeof(u32),
                       (__force u32)val);
        }

        if (!found) {
                DP_NOTICE(p_hwfn,
                          "Received an MFW message indication but no new message!\n");
                rc = -EINVAL;
        }

        /* Copy the new mfw messages into the shadow */
        memcpy(info->mfw_mb_shadow, info->mfw_mb_cur, info->mfw_mb_length);

        return rc;
}

int qed_mcp_get_mfw_ver(struct qed_hwfn *p_hwfn,
                        struct qed_ptt *p_ptt,
                        u32 *p_mfw_ver, u32 *p_running_bundle_id)
{
        u32 global_offsize;

        if (IS_VF(p_hwfn->cdev)) {
                if (p_hwfn->vf_iov_info) {
                        struct pfvf_acquire_resp_tlv *p_resp;

                        p_resp = &p_hwfn->vf_iov_info->acquire_resp;
                        *p_mfw_ver = p_resp->pfdev_info.mfw_ver;
                        return 0;
                } else {
                        DP_VERBOSE(p_hwfn,
                                   QED_MSG_IOV,
                                   "VF requested MFW version prior to ACQUIRE\n");
                        return -EINVAL;
                }
        }

        global_offsize = qed_rd(p_hwfn, p_ptt,
                                SECTION_OFFSIZE_ADDR(p_hwfn->
                                                     mcp_info->public_base,
                                                     PUBLIC_GLOBAL));
        *p_mfw_ver =
            qed_rd(p_hwfn, p_ptt,
                   SECTION_ADDR(global_offsize,
                                0) + offsetof(struct public_global, mfw_ver));

        if (p_running_bundle_id != NULL) {
                *p_running_bundle_id = qed_rd(p_hwfn, p_ptt,
                                              SECTION_ADDR(global_offsize, 0) +
                                              offsetof(struct public_global,
                                                       running_bundle_id));
        }

        return 0;
}

int qed_mcp_get_mbi_ver(struct qed_hwfn *p_hwfn,
                        struct qed_ptt *p_ptt, u32 *p_mbi_ver)
{
        u32 nvm_cfg_addr, nvm_cfg1_offset, mbi_ver_addr;

        if (IS_VF(p_hwfn->cdev))
                return -EINVAL;

        /* Read the address of the nvm_cfg */
        nvm_cfg_addr = qed_rd(p_hwfn, p_ptt, MISC_REG_GEN_PURP_CR0);
        if (!nvm_cfg_addr) {
                DP_NOTICE(p_hwfn, "Shared memory not initialized\n");
                return -EINVAL;
        }

        /* Read the offset of nvm_cfg1 */
        nvm_cfg1_offset = qed_rd(p_hwfn, p_ptt, nvm_cfg_addr + 4);

        mbi_ver_addr = MCP_REG_SCRATCH + nvm_cfg1_offset +
                       offsetof(struct nvm_cfg1, glob) +
                       offsetof(struct nvm_cfg1_glob, mbi_version);
        *p_mbi_ver = qed_rd(p_hwfn, p_ptt,
                            mbi_ver_addr) &
                     (NVM_CFG1_GLOB_MBI_VERSION_0_MASK |
                      NVM_CFG1_GLOB_MBI_VERSION_1_MASK |
                      NVM_CFG1_GLOB_MBI_VERSION_2_MASK);

        return 0;
}

int qed_mcp_get_media_type(struct qed_dev *cdev, u32 *p_media_type)
{
        struct qed_hwfn *p_hwfn = &cdev->hwfns[0];
        struct qed_ptt  *p_ptt;

        if (IS_VF(cdev))
                return -EINVAL;

        if (!qed_mcp_is_init(p_hwfn)) {
                DP_NOTICE(p_hwfn, "MFW is not initialized!\n");
                return -EBUSY;
        }

        *p_media_type = MEDIA_UNSPECIFIED;

        p_ptt = qed_ptt_acquire(p_hwfn);
        if (!p_ptt)
                return -EBUSY;

        *p_media_type = qed_rd(p_hwfn, p_ptt, p_hwfn->mcp_info->port_addr +
                               offsetof(struct public_port, media_type));

        qed_ptt_release(p_hwfn, p_ptt);

        return 0;
}

/* Old MFW has a global configuration for all PFs regarding RDMA support */
static void
qed_mcp_get_shmem_proto_legacy(struct qed_hwfn *p_hwfn,
                               enum qed_pci_personality *p_proto)
{
        /* There wasn't ever a legacy MFW that published iwarp.
         * So at this point, this is either plain l2 or RoCE.
         */
        if (test_bit(QED_DEV_CAP_ROCE, &p_hwfn->hw_info.device_capabilities))
                *p_proto = QED_PCI_ETH_ROCE;
        else
                *p_proto = QED_PCI_ETH;

        DP_VERBOSE(p_hwfn, NETIF_MSG_IFUP,
                   "According to Legacy capabilities, L2 personality is %08x\n",
                   (u32) *p_proto);
}

static int
qed_mcp_get_shmem_proto_mfw(struct qed_hwfn *p_hwfn,
                            struct qed_ptt *p_ptt,
                            enum qed_pci_personality *p_proto)
{
        u32 resp = 0, param = 0;
        int rc;

        rc = qed_mcp_cmd(p_hwfn, p_ptt,
                         DRV_MSG_CODE_GET_PF_RDMA_PROTOCOL, 0, &resp, &param);
        if (rc)
                return rc;
        if (resp != FW_MSG_CODE_OK) {
                DP_VERBOSE(p_hwfn, NETIF_MSG_IFUP,
                           "MFW lacks support for command; Returns %08x\n",
                           resp);
                return -EINVAL;
        }

        switch (param) {
        case FW_MB_PARAM_GET_PF_RDMA_NONE:
                *p_proto = QED_PCI_ETH;
                break;
        case FW_MB_PARAM_GET_PF_RDMA_ROCE:
                *p_proto = QED_PCI_ETH_ROCE;
                break;
        case FW_MB_PARAM_GET_PF_RDMA_IWARP:
                *p_proto = QED_PCI_ETH_IWARP;
                break;
        case FW_MB_PARAM_GET_PF_RDMA_BOTH:
                *p_proto = QED_PCI_ETH_RDMA;
                break;
        default:
                DP_NOTICE(p_hwfn,
                          "MFW answers GET_PF_RDMA_PROTOCOL but param is %08x\n",
                          param);
                return -EINVAL;
        }

        DP_VERBOSE(p_hwfn,
                   NETIF_MSG_IFUP,
                   "According to capabilities, L2 personality is %08x [resp %08x param %08x]\n",
                   (u32) *p_proto, resp, param);
        return 0;
}

static int
qed_mcp_get_shmem_proto(struct qed_hwfn *p_hwfn,
                        struct public_func *p_info,
                        struct qed_ptt *p_ptt,
                        enum qed_pci_personality *p_proto)
{
        int rc = 0;

        switch (p_info->config & FUNC_MF_CFG_PROTOCOL_MASK) {
        case FUNC_MF_CFG_PROTOCOL_ETHERNET:
                if (!IS_ENABLED(CONFIG_QED_RDMA))
                        *p_proto = QED_PCI_ETH;
                else if (qed_mcp_get_shmem_proto_mfw(p_hwfn, p_ptt, p_proto))
                        qed_mcp_get_shmem_proto_legacy(p_hwfn, p_proto);
                break;
        case FUNC_MF_CFG_PROTOCOL_ISCSI:
                *p_proto = QED_PCI_ISCSI;
                break;
        case FUNC_MF_CFG_PROTOCOL_FCOE:
                *p_proto = QED_PCI_FCOE;
                break;
        case FUNC_MF_CFG_PROTOCOL_ROCE:
                DP_NOTICE(p_hwfn, "RoCE personality is not a valid value!\n");
        /* Fallthrough */
        default:
                rc = -EINVAL;
        }

        return rc;
}

int qed_mcp_fill_shmem_func_info(struct qed_hwfn *p_hwfn,
                                 struct qed_ptt *p_ptt)
{
        struct qed_mcp_function_info *info;
        struct public_func shmem_info;

        qed_mcp_get_shmem_func(p_hwfn, p_ptt, &shmem_info, MCP_PF_ID(p_hwfn));
        info = &p_hwfn->mcp_info->func_info;

        info->pause_on_host = (shmem_info.config &
                               FUNC_MF_CFG_PAUSE_ON_HOST_RING) ? 1 : 0;

        if (qed_mcp_get_shmem_proto(p_hwfn, &shmem_info, p_ptt,
                                    &info->protocol)) {
                DP_ERR(p_hwfn, "Unknown personality %08x\n",
                       (u32)(shmem_info.config & FUNC_MF_CFG_PROTOCOL_MASK));
                return -EINVAL;
        }

        qed_read_pf_bandwidth(p_hwfn, &shmem_info);

        if (shmem_info.mac_upper || shmem_info.mac_lower) {
                info->mac[0] = (u8)(shmem_info.mac_upper >> 8);
                info->mac[1] = (u8)(shmem_info.mac_upper);
                info->mac[2] = (u8)(shmem_info.mac_lower >> 24);
                info->mac[3] = (u8)(shmem_info.mac_lower >> 16);
                info->mac[4] = (u8)(shmem_info.mac_lower >> 8);
                info->mac[5] = (u8)(shmem_info.mac_lower);

                /* Store primary MAC for later possible WoL */
                memcpy(&p_hwfn->cdev->wol_mac, info->mac, ETH_ALEN);
        } else {
                DP_NOTICE(p_hwfn, "MAC is 0 in shmem\n");
        }

        info->wwn_port = (u64)shmem_info.fcoe_wwn_port_name_lower |
                         (((u64)shmem_info.fcoe_wwn_port_name_upper) << 32);
        info->wwn_node = (u64)shmem_info.fcoe_wwn_node_name_lower |
                         (((u64)shmem_info.fcoe_wwn_node_name_upper) << 32);

        info->ovlan = (u16)(shmem_info.ovlan_stag & FUNC_MF_CFG_OV_STAG_MASK);

        info->mtu = (u16)shmem_info.mtu_size;

        p_hwfn->hw_info.b_wol_support = QED_WOL_SUPPORT_NONE;
        p_hwfn->cdev->wol_config = (u8)QED_OV_WOL_DEFAULT;
        if (qed_mcp_is_init(p_hwfn)) {
                u32 resp = 0, param = 0;
                int rc;

                rc = qed_mcp_cmd(p_hwfn, p_ptt,
                                 DRV_MSG_CODE_OS_WOL, 0, &resp, &param);
                if (rc)
                        return rc;
                if (resp == FW_MSG_CODE_OS_WOL_SUPPORTED)
                        p_hwfn->hw_info.b_wol_support = QED_WOL_SUPPORT_PME;
        }

        DP_VERBOSE(p_hwfn, (QED_MSG_SP | NETIF_MSG_IFUP),
                   "Read configuration from shmem: pause_on_host %02x protocol %02x BW [%02x - %02x] MAC %02x:%02x:%02x:%02x:%02x:%02x wwn port %llx node %llx ovlan %04x wol %02x\n",
                info->pause_on_host, info->protocol,
                info->bandwidth_min, info->bandwidth_max,
                info->mac[0], info->mac[1], info->mac[2],
                info->mac[3], info->mac[4], info->mac[5],
                info->wwn_port, info->wwn_node,
                info->ovlan, (u8)p_hwfn->hw_info.b_wol_support);

        return 0;
}

struct qed_mcp_link_params
*qed_mcp_get_link_params(struct qed_hwfn *p_hwfn)
{
        if (!p_hwfn || !p_hwfn->mcp_info)
                return NULL;
        return &p_hwfn->mcp_info->link_input;
}

struct qed_mcp_link_state
*qed_mcp_get_link_state(struct qed_hwfn *p_hwfn)
{
        if (!p_hwfn || !p_hwfn->mcp_info)
                return NULL;
        return &p_hwfn->mcp_info->link_output;
}

struct qed_mcp_link_capabilities
*qed_mcp_get_link_capabilities(struct qed_hwfn *p_hwfn)
{
        if (!p_hwfn || !p_hwfn->mcp_info)
                return NULL;
        return &p_hwfn->mcp_info->link_capabilities;
}

int qed_mcp_drain(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
{
        u32 resp = 0, param = 0;
        int rc;

        rc = qed_mcp_cmd(p_hwfn, p_ptt,
                         DRV_MSG_CODE_NIG_DRAIN, 1000, &resp, &param);

        /* Wait for the drain to complete before returning */
        msleep(1020);

        return rc;
}

int qed_mcp_get_flash_size(struct qed_hwfn *p_hwfn,
                           struct qed_ptt *p_ptt, u32 *p_flash_size)
{
        u32 flash_size;

        if (IS_VF(p_hwfn->cdev))
                return -EINVAL;

        flash_size = qed_rd(p_hwfn, p_ptt, MCP_REG_NVM_CFG4);
        flash_size = (flash_size & MCP_REG_NVM_CFG4_FLASH_SIZE) >>
                      MCP_REG_NVM_CFG4_FLASH_SIZE_SHIFT;
        flash_size = (1 << (flash_size + MCP_BYTES_PER_MBIT_SHIFT));

        *p_flash_size = flash_size;

        return 0;
}

static int
qed_mcp_config_vf_msix_bb(struct qed_hwfn *p_hwfn,
                          struct qed_ptt *p_ptt, u8 vf_id, u8 num)
{
        u32 resp = 0, param = 0, rc_param = 0;
        int rc;

        /* Only Leader can configure MSIX, and need to take CMT into account */
        if (!IS_LEAD_HWFN(p_hwfn))
                return 0;
        num *= p_hwfn->cdev->num_hwfns;

        param |= (vf_id << DRV_MB_PARAM_CFG_VF_MSIX_VF_ID_SHIFT) &
                 DRV_MB_PARAM_CFG_VF_MSIX_VF_ID_MASK;
        param |= (num << DRV_MB_PARAM_CFG_VF_MSIX_SB_NUM_SHIFT) &
                 DRV_MB_PARAM_CFG_VF_MSIX_SB_NUM_MASK;

        rc = qed_mcp_cmd(p_hwfn, p_ptt, DRV_MSG_CODE_CFG_VF_MSIX, param,
                         &resp, &rc_param);

        if (resp != FW_MSG_CODE_DRV_CFG_VF_MSIX_DONE) {
                DP_NOTICE(p_hwfn, "VF[%d]: MFW failed to set MSI-X\n", vf_id);
                rc = -EINVAL;
        } else {
                DP_VERBOSE(p_hwfn, QED_MSG_IOV,
                           "Requested 0x%02x MSI-x interrupts from VF 0x%02x\n",
                           num, vf_id);
        }

        return rc;
}

static int
qed_mcp_config_vf_msix_ah(struct qed_hwfn *p_hwfn,
                          struct qed_ptt *p_ptt, u8 num)
{
        u32 resp = 0, param = num, rc_param = 0;
        int rc;

        rc = qed_mcp_cmd(p_hwfn, p_ptt, DRV_MSG_CODE_CFG_PF_VFS_MSIX,
                         param, &resp, &rc_param);

        if (resp != FW_MSG_CODE_DRV_CFG_PF_VFS_MSIX_DONE) {
                DP_NOTICE(p_hwfn, "MFW failed to set MSI-X for VFs\n");
                rc = -EINVAL;
        } else {
                DP_VERBOSE(p_hwfn, QED_MSG_IOV,
                           "Requested 0x%02x MSI-x interrupts for VFs\n", num);
        }

        return rc;
}

int qed_mcp_config_vf_msix(struct qed_hwfn *p_hwfn,
                           struct qed_ptt *p_ptt, u8 vf_id, u8 num)
{
        if (QED_IS_BB(p_hwfn->cdev))
                return qed_mcp_config_vf_msix_bb(p_hwfn, p_ptt, vf_id, num);
        else
                return qed_mcp_config_vf_msix_ah(p_hwfn, p_ptt, num);
}

int
qed_mcp_send_drv_version(struct qed_hwfn *p_hwfn,
                         struct qed_ptt *p_ptt,
                         struct qed_mcp_drv_version *p_ver)
{
        struct qed_mcp_mb_params mb_params;
        struct drv_version_stc drv_version;
        __be32 val;
        u32 i;
        int rc;

        memset(&drv_version, 0, sizeof(drv_version));
        drv_version.version = p_ver->version;
        for (i = 0; i < (MCP_DRV_VER_STR_SIZE - 4) / sizeof(u32); i++) {
                val = cpu_to_be32(*((u32 *)&p_ver->name[i * sizeof(u32)]));
                *(__be32 *)&drv_version.name[i * sizeof(u32)] = val;
        }

        memset(&mb_params, 0, sizeof(mb_params));
        mb_params.cmd = DRV_MSG_CODE_SET_VERSION;
        mb_params.p_data_src = &drv_version;
        mb_params.data_src_size = sizeof(drv_version);
        rc = qed_mcp_cmd_and_union(p_hwfn, p_ptt, &mb_params);
        if (rc)
                DP_ERR(p_hwfn, "MCP response failure, aborting\n");

        return rc;
}

int qed_mcp_halt(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
{
        u32 resp = 0, param = 0;
        int rc;

        rc = qed_mcp_cmd(p_hwfn, p_ptt, DRV_MSG_CODE_MCP_HALT, 0, &resp,
                         &param);
        if (rc)
                DP_ERR(p_hwfn, "MCP response failure, aborting\n");

        return rc;
}

int qed_mcp_resume(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)

{
        u32 value, cpu_mode;

        qed_wr(p_hwfn, p_ptt, MCP_REG_CPU_STATE, 0xffffffff);

        value = qed_rd(p_hwfn, p_ptt, MCP_REG_CPU_MODE);
        value &= ~MCP_REG_CPU_MODE_SOFT_HALT;
        qed_wr(p_hwfn, p_ptt, MCP_REG_CPU_MODE, value);
        cpu_mode = qed_rd(p_hwfn, p_ptt, MCP_REG_CPU_MODE);

        return (cpu_mode & MCP_REG_CPU_MODE_SOFT_HALT) ? -EAGAIN : 0;
}

int qed_mcp_ov_update_current_config(struct qed_hwfn *p_hwfn,
                                     struct qed_ptt *p_ptt,
                                     enum qed_ov_client client)
{
        u32 resp = 0, param = 0;
        u32 drv_mb_param;
        int rc;

        switch (client) {
        case QED_OV_CLIENT_DRV:
                drv_mb_param = DRV_MB_PARAM_OV_CURR_CFG_OS;
                break;
        case QED_OV_CLIENT_USER:
                drv_mb_param = DRV_MB_PARAM_OV_CURR_CFG_OTHER;
                break;
        case QED_OV_CLIENT_VENDOR_SPEC:
                drv_mb_param = DRV_MB_PARAM_OV_CURR_CFG_VENDOR_SPEC;
                break;
        default:
                DP_NOTICE(p_hwfn, "Invalid client type %d\n", client);
                return -EINVAL;
        }

        rc = qed_mcp_cmd(p_hwfn, p_ptt, DRV_MSG_CODE_OV_UPDATE_CURR_CFG,
                         drv_mb_param, &resp, &param);
        if (rc)
                DP_ERR(p_hwfn, "MCP response failure, aborting\n");

        return rc;
}

int qed_mcp_ov_update_driver_state(struct qed_hwfn *p_hwfn,
                                   struct qed_ptt *p_ptt,
                                   enum qed_ov_driver_state drv_state)
{
        u32 resp = 0, param = 0;
        u32 drv_mb_param;
        int rc;

        switch (drv_state) {
        case QED_OV_DRIVER_STATE_NOT_LOADED:
                drv_mb_param = DRV_MSG_CODE_OV_UPDATE_DRIVER_STATE_NOT_LOADED;
                break;
        case QED_OV_DRIVER_STATE_DISABLED:
                drv_mb_param = DRV_MSG_CODE_OV_UPDATE_DRIVER_STATE_DISABLED;
                break;
        case QED_OV_DRIVER_STATE_ACTIVE:
                drv_mb_param = DRV_MSG_CODE_OV_UPDATE_DRIVER_STATE_ACTIVE;
                break;
        default:
                DP_NOTICE(p_hwfn, "Invalid driver state %d\n", drv_state);
                return -EINVAL;
        }

        rc = qed_mcp_cmd(p_hwfn, p_ptt, DRV_MSG_CODE_OV_UPDATE_DRIVER_STATE,
                         drv_mb_param, &resp, &param);
        if (rc)
                DP_ERR(p_hwfn, "Failed to send driver state\n");

        return rc;
}

int qed_mcp_ov_update_mtu(struct qed_hwfn *p_hwfn,
                          struct qed_ptt *p_ptt, u16 mtu)
{
        u32 resp = 0, param = 0;
        u32 drv_mb_param;
        int rc;

        drv_mb_param = (u32)mtu << DRV_MB_PARAM_OV_MTU_SIZE_SHIFT;
        rc = qed_mcp_cmd(p_hwfn, p_ptt, DRV_MSG_CODE_OV_UPDATE_MTU,
                         drv_mb_param, &resp, &param);
        if (rc)
                DP_ERR(p_hwfn, "Failed to send mtu value, rc = %d\n", rc);

        return rc;
}

int qed_mcp_ov_update_mac(struct qed_hwfn *p_hwfn,
                          struct qed_ptt *p_ptt, u8 *mac)
{
        struct qed_mcp_mb_params mb_params;
        u32 mfw_mac[2];
        int rc;

        memset(&mb_params, 0, sizeof(mb_params));
        mb_params.cmd = DRV_MSG_CODE_SET_VMAC;
        mb_params.param = DRV_MSG_CODE_VMAC_TYPE_MAC <<
                          DRV_MSG_CODE_VMAC_TYPE_SHIFT;
        mb_params.param |= MCP_PF_ID(p_hwfn);

        /* MCP is BE, and on LE platforms PCI would swap access to SHMEM
         * in 32-bit granularity.
         * So the MAC has to be set in native order [and not byte order],
         * otherwise it would be read incorrectly by MFW after swap.
         */
        mfw_mac[0] = mac[0] << 24 | mac[1] << 16 | mac[2] << 8 | mac[3];
        mfw_mac[1] = mac[4] << 24 | mac[5] << 16;

        mb_params.p_data_src = (u8 *)mfw_mac;
        mb_params.data_src_size = 8;
        rc = qed_mcp_cmd_and_union(p_hwfn, p_ptt, &mb_params);
        if (rc)
                DP_ERR(p_hwfn, "Failed to send mac address, rc = %d\n", rc);

        /* Store primary MAC for later possible WoL */
        memcpy(p_hwfn->cdev->wol_mac, mac, ETH_ALEN);

        return rc;
}

int qed_mcp_ov_update_wol(struct qed_hwfn *p_hwfn,
                          struct qed_ptt *p_ptt, enum qed_ov_wol wol)
{
        u32 resp = 0, param = 0;
        u32 drv_mb_param;
        int rc;

        if (p_hwfn->hw_info.b_wol_support == QED_WOL_SUPPORT_NONE) {
                DP_VERBOSE(p_hwfn, QED_MSG_SP,
                           "Can't change WoL configuration when WoL isn't supported\n");
                return -EINVAL;
        }

        switch (wol) {
        case QED_OV_WOL_DEFAULT:
                drv_mb_param = DRV_MB_PARAM_WOL_DEFAULT;
                break;
        case QED_OV_WOL_DISABLED:
                drv_mb_param = DRV_MB_PARAM_WOL_DISABLED;
                break;
        case QED_OV_WOL_ENABLED:
                drv_mb_param = DRV_MB_PARAM_WOL_ENABLED;
                break;
        default:
                DP_ERR(p_hwfn, "Invalid wol state %d\n", wol);
                return -EINVAL;
        }

        rc = qed_mcp_cmd(p_hwfn, p_ptt, DRV_MSG_CODE_OV_UPDATE_WOL,
                         drv_mb_param, &resp, &param);
        if (rc)
                DP_ERR(p_hwfn, "Failed to send wol mode, rc = %d\n", rc);

        /* Store the WoL update for a future unload */
        p_hwfn->cdev->wol_config = (u8)wol;

        return rc;
}

int qed_mcp_ov_update_eswitch(struct qed_hwfn *p_hwfn,
                              struct qed_ptt *p_ptt,
                              enum qed_ov_eswitch eswitch)
{
        u32 resp = 0, param = 0;
        u32 drv_mb_param;
        int rc;

        switch (eswitch) {
        case QED_OV_ESWITCH_NONE:
                drv_mb_param = DRV_MB_PARAM_ESWITCH_MODE_NONE;
                break;
        case QED_OV_ESWITCH_VEB:
                drv_mb_param = DRV_MB_PARAM_ESWITCH_MODE_VEB;
                break;
        case QED_OV_ESWITCH_VEPA:
                drv_mb_param = DRV_MB_PARAM_ESWITCH_MODE_VEPA;
                break;
        default:
                DP_ERR(p_hwfn, "Invalid eswitch mode %d\n", eswitch);
                return -EINVAL;
        }

        rc = qed_mcp_cmd(p_hwfn, p_ptt, DRV_MSG_CODE_OV_UPDATE_ESWITCH_MODE,
                         drv_mb_param, &resp, &param);
        if (rc)
                DP_ERR(p_hwfn, "Failed to send eswitch mode, rc = %d\n", rc);

        return rc;
}

int qed_mcp_set_led(struct qed_hwfn *p_hwfn,
                    struct qed_ptt *p_ptt, enum qed_led_mode mode)
{
        u32 resp = 0, param = 0, drv_mb_param;
        int rc;

        switch (mode) {
        case QED_LED_MODE_ON:
                drv_mb_param = DRV_MB_PARAM_SET_LED_MODE_ON;
                break;
        case QED_LED_MODE_OFF:
                drv_mb_param = DRV_MB_PARAM_SET_LED_MODE_OFF;
                break;
        case QED_LED_MODE_RESTORE:
                drv_mb_param = DRV_MB_PARAM_SET_LED_MODE_OPER;
                break;
        default:
                DP_NOTICE(p_hwfn, "Invalid LED mode %d\n", mode);
                return -EINVAL;
        }

        rc = qed_mcp_cmd(p_hwfn, p_ptt, DRV_MSG_CODE_SET_LED_MODE,
                         drv_mb_param, &resp, &param);

        return rc;
}

int qed_mcp_mask_parities(struct qed_hwfn *p_hwfn,
                          struct qed_ptt *p_ptt, u32 mask_parities)
{
        u32 resp = 0, param = 0;
        int rc;

        rc = qed_mcp_cmd(p_hwfn, p_ptt, DRV_MSG_CODE_MASK_PARITIES,
                         mask_parities, &resp, &param);

        if (rc) {
                DP_ERR(p_hwfn,
                       "MCP response failure for mask parities, aborting\n");
        } else if (resp != FW_MSG_CODE_OK) {
                DP_ERR(p_hwfn,
                       "MCP did not acknowledge mask parity request. Old MFW?\n");
                rc = -EINVAL;
        }

        return rc;
}

int qed_mcp_nvm_read(struct qed_dev *cdev, u32 addr, u8 *p_buf, u32 len)
{
        u32 bytes_left = len, offset = 0, bytes_to_copy, read_len = 0;
        struct qed_hwfn *p_hwfn = QED_LEADING_HWFN(cdev);
        u32 resp = 0, resp_param = 0;
        struct qed_ptt *p_ptt;
        int rc = 0;

        p_ptt = qed_ptt_acquire(p_hwfn);
        if (!p_ptt)
                return -EBUSY;

        while (bytes_left > 0) {
                bytes_to_copy = min_t(u32, bytes_left, MCP_DRV_NVM_BUF_LEN);

                rc = qed_mcp_nvm_rd_cmd(p_hwfn, p_ptt,
                                        DRV_MSG_CODE_NVM_READ_NVRAM,
                                        addr + offset +
                                        (bytes_to_copy <<
                                         DRV_MB_PARAM_NVM_LEN_OFFSET),
                                        &resp, &resp_param,
                                        &read_len,
                                        (u32 *)(p_buf + offset));

                if (rc || (resp != FW_MSG_CODE_NVM_OK)) {
                        DP_NOTICE(cdev, "MCP command rc = %d\n", rc);
                        break;
                }

                /* This can be a lengthy process, and it's possible scheduler
                 * isn't preemptable. Sleep a bit to prevent CPU hogging.
                 */
                if (bytes_left % 0x1000 <
                    (bytes_left - read_len) % 0x1000)
                        usleep_range(1000, 2000);

                offset += read_len;
                bytes_left -= read_len;
        }

        cdev->mcp_nvm_resp = resp;
        qed_ptt_release(p_hwfn, p_ptt);

        return rc;
}

int qed_mcp_nvm_resp(struct qed_dev *cdev, u8 *p_buf)
{
        struct qed_hwfn *p_hwfn = QED_LEADING_HWFN(cdev);
        struct qed_ptt *p_ptt;

        p_ptt = qed_ptt_acquire(p_hwfn);
        if (!p_ptt)
                return -EBUSY;

        memcpy(p_buf, &cdev->mcp_nvm_resp, sizeof(cdev->mcp_nvm_resp));
        qed_ptt_release(p_hwfn, p_ptt);

        return 0;
}

int qed_mcp_nvm_put_file_begin(struct qed_dev *cdev, u32 addr)
{
        struct qed_hwfn *p_hwfn = QED_LEADING_HWFN(cdev);
        struct qed_ptt *p_ptt;
        u32 resp, param;
        int rc;

        p_ptt = qed_ptt_acquire(p_hwfn);
        if (!p_ptt)
                return -EBUSY;
        rc = qed_mcp_cmd(p_hwfn, p_ptt, DRV_MSG_CODE_NVM_PUT_FILE_BEGIN, addr,
                         &resp, &param);
        cdev->mcp_nvm_resp = resp;
        qed_ptt_release(p_hwfn, p_ptt);

        return rc;
}

int qed_mcp_nvm_write(struct qed_dev *cdev,
                      u32 cmd, u32 addr, u8 *p_buf, u32 len)
{
        u32 buf_idx = 0, buf_size, nvm_cmd, nvm_offset, resp = 0, param;
        struct qed_hwfn *p_hwfn = QED_LEADING_HWFN(cdev);
        struct qed_ptt *p_ptt;
        int rc = -EINVAL;

        p_ptt = qed_ptt_acquire(p_hwfn);
        if (!p_ptt)
                return -EBUSY;

        switch (cmd) {
        case QED_PUT_FILE_DATA:
                nvm_cmd = DRV_MSG_CODE_NVM_PUT_FILE_DATA;
                break;
        case QED_NVM_WRITE_NVRAM:
                nvm_cmd = DRV_MSG_CODE_NVM_WRITE_NVRAM;
                break;
        default:
                DP_NOTICE(p_hwfn, "Invalid nvm write command 0x%x\n", cmd);
                rc = -EINVAL;
                goto out;
        }

        while (buf_idx < len) {
                buf_size = min_t(u32, (len - buf_idx), MCP_DRV_NVM_BUF_LEN);
                nvm_offset = ((buf_size << DRV_MB_PARAM_NVM_LEN_OFFSET) |
                              addr) + buf_idx;
                rc = qed_mcp_nvm_wr_cmd(p_hwfn, p_ptt, nvm_cmd, nvm_offset,
                                        &resp, &param, buf_size,
                                        (u32 *)&p_buf[buf_idx]);
                if (rc) {
                        DP_NOTICE(cdev, "nvm write failed, rc = %d\n", rc);
                        resp = FW_MSG_CODE_ERROR;
                        break;
                }

                if (resp != FW_MSG_CODE_OK &&
                    resp != FW_MSG_CODE_NVM_OK &&
                    resp != FW_MSG_CODE_NVM_PUT_FILE_FINISH_OK) {
                        DP_NOTICE(cdev,
                                  "nvm write failed, resp = 0x%08x\n", resp);
                        rc = -EINVAL;
                        break;
                }

                /* This can be a lengthy process, and it's possible scheduler
                 * isn't pre-emptable. Sleep a bit to prevent CPU hogging.
                 */
                if (buf_idx % 0x1000 > (buf_idx + buf_size) % 0x1000)
                        usleep_range(1000, 2000);

                buf_idx += buf_size;
        }

        cdev->mcp_nvm_resp = resp;
out:
        qed_ptt_release(p_hwfn, p_ptt);

        return rc;
}

int qed_mcp_bist_register_test(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
{
        u32 drv_mb_param = 0, rsp, param;
        int rc = 0;

        drv_mb_param = (DRV_MB_PARAM_BIST_REGISTER_TEST <<
                        DRV_MB_PARAM_BIST_TEST_INDEX_SHIFT);

        rc = qed_mcp_cmd(p_hwfn, p_ptt, DRV_MSG_CODE_BIST_TEST,
                         drv_mb_param, &rsp, &param);

        if (rc)
                return rc;

        if (((rsp & FW_MSG_CODE_MASK) != FW_MSG_CODE_OK) ||
            (param != DRV_MB_PARAM_BIST_RC_PASSED))
                rc = -EAGAIN;

        return rc;
}

int qed_mcp_bist_clock_test(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
{
        u32 drv_mb_param, rsp, param;
        int rc = 0;

        drv_mb_param = (DRV_MB_PARAM_BIST_CLOCK_TEST <<
                        DRV_MB_PARAM_BIST_TEST_INDEX_SHIFT);

        rc = qed_mcp_cmd(p_hwfn, p_ptt, DRV_MSG_CODE_BIST_TEST,
                         drv_mb_param, &rsp, &param);

        if (rc)
                return rc;

        if (((rsp & FW_MSG_CODE_MASK) != FW_MSG_CODE_OK) ||
            (param != DRV_MB_PARAM_BIST_RC_PASSED))
                rc = -EAGAIN;

        return rc;
}

int qed_mcp_bist_nvm_get_num_images(struct qed_hwfn *p_hwfn,
                                    struct qed_ptt *p_ptt,
                                    u32 *num_images)
{
        u32 drv_mb_param = 0, rsp;
        int rc = 0;

        drv_mb_param = (DRV_MB_PARAM_BIST_NVM_TEST_NUM_IMAGES <<
                        DRV_MB_PARAM_BIST_TEST_INDEX_SHIFT);

        rc = qed_mcp_cmd(p_hwfn, p_ptt, DRV_MSG_CODE_BIST_TEST,
                         drv_mb_param, &rsp, num_images);
        if (rc)
                return rc;

        if (((rsp & FW_MSG_CODE_MASK) != FW_MSG_CODE_OK))
                rc = -EINVAL;

        return rc;
}

int qed_mcp_bist_nvm_get_image_att(struct qed_hwfn *p_hwfn,
                                   struct qed_ptt *p_ptt,
                                   struct bist_nvm_image_att *p_image_att,
                                   u32 image_index)
{
        u32 buf_size = 0, param, resp = 0, resp_param = 0;
        int rc;

        param = DRV_MB_PARAM_BIST_NVM_TEST_IMAGE_BY_INDEX <<
                DRV_MB_PARAM_BIST_TEST_INDEX_SHIFT;
        param |= image_index << DRV_MB_PARAM_BIST_TEST_IMAGE_INDEX_SHIFT;

        rc = qed_mcp_nvm_rd_cmd(p_hwfn, p_ptt,
                                DRV_MSG_CODE_BIST_TEST, param,
                                &resp, &resp_param,
                                &buf_size,
                                (u32 *)p_image_att);
        if (rc)
                return rc;

        if (((resp & FW_MSG_CODE_MASK) != FW_MSG_CODE_OK) ||
            (p_image_att->return_code != 1))
                rc = -EINVAL;

        return rc;
}

int qed_mcp_nvm_info_populate(struct qed_hwfn *p_hwfn)
{
        struct qed_nvm_image_info *nvm_info = &p_hwfn->nvm_info;
        struct qed_ptt *p_ptt;
        int rc;
        u32 i;

        p_ptt = qed_ptt_acquire(p_hwfn);
        if (!p_ptt) {
                DP_ERR(p_hwfn, "failed to acquire ptt\n");
                return -EBUSY;
        }

        /* Acquire from MFW the amount of available images */
        nvm_info->num_images = 0;
        rc = qed_mcp_bist_nvm_get_num_images(p_hwfn,
                                             p_ptt, &nvm_info->num_images);
        if (rc == -EOPNOTSUPP) {
                DP_INFO(p_hwfn, "DRV_MSG_CODE_BIST_TEST is not supported\n");
                goto out;
        } else if (rc || !nvm_info->num_images) {
                DP_ERR(p_hwfn, "Failed getting number of images\n");
                goto err0;
        }

        nvm_info->image_att = kmalloc(nvm_info->num_images *
                                      sizeof(struct bist_nvm_image_att),
                                      GFP_KERNEL);
        if (!nvm_info->image_att) {
                rc = -ENOMEM;
                goto err0;
        }

        /* Iterate over images and get their attributes */
        for (i = 0; i < nvm_info->num_images; i++) {
                rc = qed_mcp_bist_nvm_get_image_att(p_hwfn, p_ptt,
                                                    &nvm_info->image_att[i], i);
                if (rc) {
                        DP_ERR(p_hwfn,
                               "Failed getting image index %d attributes\n", i);
                        goto err1;
                }

                DP_VERBOSE(p_hwfn, QED_MSG_SP, "image index %d, size %x\n", i,
                           nvm_info->image_att[i].len);
        }
out:
        qed_ptt_release(p_hwfn, p_ptt);
        return 0;

err1:
        kfree(nvm_info->image_att);
err0:
        qed_ptt_release(p_hwfn, p_ptt);
        return rc;
}

static int
qed_mcp_get_nvm_image_att(struct qed_hwfn *p_hwfn,
                          struct qed_ptt *p_ptt,
                          enum qed_nvm_images image_id,
                          struct qed_nvm_image_att *p_image_att)
{
        enum nvm_image_type type;
        u32 i;

        /* Translate image_id into MFW definitions */
        switch (image_id) {
        case QED_NVM_IMAGE_ISCSI_CFG:
                type = NVM_TYPE_ISCSI_CFG;
                break;
        case QED_NVM_IMAGE_FCOE_CFG:
                type = NVM_TYPE_FCOE_CFG;
                break;
        default:
                DP_NOTICE(p_hwfn, "Unknown request of image_id %08x\n",
                          image_id);
                return -EINVAL;
        }

        for (i = 0; i < p_hwfn->nvm_info.num_images; i++)
                if (type == p_hwfn->nvm_info.image_att[i].image_type)
                        break;
        if (i == p_hwfn->nvm_info.num_images) {
                DP_VERBOSE(p_hwfn, QED_MSG_STORAGE,
                           "Failed to find nvram image of type %08x\n",
                           image_id);
                return -ENOENT;
        }

        p_image_att->start_addr = p_hwfn->nvm_info.image_att[i].nvm_start_addr;
        p_image_att->length = p_hwfn->nvm_info.image_att[i].len;

        return 0;
}

int qed_mcp_get_nvm_image(struct qed_hwfn *p_hwfn,
                          struct qed_ptt *p_ptt,
                          enum qed_nvm_images image_id,
                          u8 *p_buffer, u32 buffer_len)
{
        struct qed_nvm_image_att image_att;
        int rc;

        memset(p_buffer, 0, buffer_len);

        rc = qed_mcp_get_nvm_image_att(p_hwfn, p_ptt, image_id, &image_att);
        if (rc)
                return rc;

        /* Validate sizes - both the image's and the supplied buffer's */
        if (image_att.length <= 4) {
                DP_VERBOSE(p_hwfn, QED_MSG_STORAGE,
                           "Image [%d] is too small - only %d bytes\n",
                           image_id, image_att.length);
                return -EINVAL;
        }

        /* Each NVM image is suffixed by CRC; Upper-layer has no need for it */
        image_att.length -= 4;

        if (image_att.length > buffer_len) {
                DP_VERBOSE(p_hwfn,
                           QED_MSG_STORAGE,
                           "Image [%d] is too big - %08x bytes where only %08x are available\n",
                           image_id, image_att.length, buffer_len);
                return -ENOMEM;
        }

        return qed_mcp_nvm_read(p_hwfn->cdev, image_att.start_addr,
                                p_buffer, image_att.length);
}

static enum resource_id_enum qed_mcp_get_mfw_res_id(enum qed_resources res_id)
{
        enum resource_id_enum mfw_res_id = RESOURCE_NUM_INVALID;

        switch (res_id) {
        case QED_SB:
                mfw_res_id = RESOURCE_NUM_SB_E;
                break;
        case QED_L2_QUEUE:
                mfw_res_id = RESOURCE_NUM_L2_QUEUE_E;
                break;
        case QED_VPORT:
                mfw_res_id = RESOURCE_NUM_VPORT_E;
                break;
        case QED_RSS_ENG:
                mfw_res_id = RESOURCE_NUM_RSS_ENGINES_E;
                break;
        case QED_PQ:
                mfw_res_id = RESOURCE_NUM_PQ_E;
                break;
        case QED_RL:
                mfw_res_id = RESOURCE_NUM_RL_E;
                break;
        case QED_MAC:
        case QED_VLAN:
                /* Each VFC resource can accommodate both a MAC and a VLAN */
                mfw_res_id = RESOURCE_VFC_FILTER_E;
                break;
        case QED_ILT:
                mfw_res_id = RESOURCE_ILT_E;
                break;
        case QED_LL2_QUEUE:
                mfw_res_id = RESOURCE_LL2_QUEUE_E;
                break;
        case QED_RDMA_CNQ_RAM:
        case QED_CMDQS_CQS:
                /* CNQ/CMDQS are the same resource */
                mfw_res_id = RESOURCE_CQS_E;
                break;
        case QED_RDMA_STATS_QUEUE:
                mfw_res_id = RESOURCE_RDMA_STATS_QUEUE_E;
                break;
        case QED_BDQ:
                mfw_res_id = RESOURCE_BDQ_E;
                break;
        default:
                break;
        }

        return mfw_res_id;
}

#define QED_RESC_ALLOC_VERSION_MAJOR    2
#define QED_RESC_ALLOC_VERSION_MINOR    0
#define QED_RESC_ALLOC_VERSION                               \
        ((QED_RESC_ALLOC_VERSION_MAJOR <<                    \
          DRV_MB_PARAM_RESOURCE_ALLOC_VERSION_MAJOR_SHIFT) | \
         (QED_RESC_ALLOC_VERSION_MINOR <<                    \
          DRV_MB_PARAM_RESOURCE_ALLOC_VERSION_MINOR_SHIFT))

struct qed_resc_alloc_in_params {
        u32 cmd;
        enum qed_resources res_id;
        u32 resc_max_val;
};

struct qed_resc_alloc_out_params {
        u32 mcp_resp;
        u32 mcp_param;
        u32 resc_num;
        u32 resc_start;
        u32 vf_resc_num;
        u32 vf_resc_start;
        u32 flags;
};

static int
qed_mcp_resc_allocation_msg(struct qed_hwfn *p_hwfn,
                            struct qed_ptt *p_ptt,
                            struct qed_resc_alloc_in_params *p_in_params,
                            struct qed_resc_alloc_out_params *p_out_params)
{
        struct qed_mcp_mb_params mb_params;
        struct resource_info mfw_resc_info;
        int rc;

        memset(&mfw_resc_info, 0, sizeof(mfw_resc_info));

        mfw_resc_info.res_id = qed_mcp_get_mfw_res_id(p_in_params->res_id);
        if (mfw_resc_info.res_id == RESOURCE_NUM_INVALID) {
                DP_ERR(p_hwfn,
                       "Failed to match resource %d [%s] with the MFW resources\n",
                       p_in_params->res_id,
                       qed_hw_get_resc_name(p_in_params->res_id));
                return -EINVAL;
        }

        switch (p_in_params->cmd) {
        case DRV_MSG_SET_RESOURCE_VALUE_MSG:
                mfw_resc_info.size = p_in_params->resc_max_val;
                /* Fallthrough */
        case DRV_MSG_GET_RESOURCE_ALLOC_MSG:
                break;
        default:
                DP_ERR(p_hwfn, "Unexpected resource alloc command [0x%08x]\n",
                       p_in_params->cmd);
                return -EINVAL;
        }

        memset(&mb_params, 0, sizeof(mb_params));
        mb_params.cmd = p_in_params->cmd;
        mb_params.param = QED_RESC_ALLOC_VERSION;
        mb_params.p_data_src = &mfw_resc_info;
        mb_params.data_src_size = sizeof(mfw_resc_info);
        mb_params.p_data_dst = mb_params.p_data_src;
        mb_params.data_dst_size = mb_params.data_src_size;

        DP_VERBOSE(p_hwfn,
                   QED_MSG_SP,
                   "Resource message request: cmd 0x%08x, res_id %d [%s], hsi_version %d.%d, val 0x%x\n",
                   p_in_params->cmd,
                   p_in_params->res_id,
                   qed_hw_get_resc_name(p_in_params->res_id),
                   QED_MFW_GET_FIELD(mb_params.param,
                                     DRV_MB_PARAM_RESOURCE_ALLOC_VERSION_MAJOR),
                   QED_MFW_GET_FIELD(mb_params.param,
                                     DRV_MB_PARAM_RESOURCE_ALLOC_VERSION_MINOR),
                   p_in_params->resc_max_val);

        rc = qed_mcp_cmd_and_union(p_hwfn, p_ptt, &mb_params);
        if (rc)
                return rc;

        p_out_params->mcp_resp = mb_params.mcp_resp;
        p_out_params->mcp_param = mb_params.mcp_param;
        p_out_params->resc_num = mfw_resc_info.size;
        p_out_params->resc_start = mfw_resc_info.offset;
        p_out_params->vf_resc_num = mfw_resc_info.vf_size;
        p_out_params->vf_resc_start = mfw_resc_info.vf_offset;
        p_out_params->flags = mfw_resc_info.flags;

        DP_VERBOSE(p_hwfn,
                   QED_MSG_SP,
                   "Resource message response: mfw_hsi_version %d.%d, num 0x%x, start 0x%x, vf_num 0x%x, vf_start 0x%x, flags 0x%08x\n",
                   QED_MFW_GET_FIELD(p_out_params->mcp_param,
                                     FW_MB_PARAM_RESOURCE_ALLOC_VERSION_MAJOR),
                   QED_MFW_GET_FIELD(p_out_params->mcp_param,
                                     FW_MB_PARAM_RESOURCE_ALLOC_VERSION_MINOR),
                   p_out_params->resc_num,
                   p_out_params->resc_start,
                   p_out_params->vf_resc_num,
                   p_out_params->vf_resc_start, p_out_params->flags);

        return 0;
}

int
qed_mcp_set_resc_max_val(struct qed_hwfn *p_hwfn,
                         struct qed_ptt *p_ptt,
                         enum qed_resources res_id,
                         u32 resc_max_val, u32 *p_mcp_resp)
{
        struct qed_resc_alloc_out_params out_params;
        struct qed_resc_alloc_in_params in_params;
        int rc;

        memset(&in_params, 0, sizeof(in_params));
        in_params.cmd = DRV_MSG_SET_RESOURCE_VALUE_MSG;
        in_params.res_id = res_id;
        in_params.resc_max_val = resc_max_val;
        memset(&out_params, 0, sizeof(out_params));
        rc = qed_mcp_resc_allocation_msg(p_hwfn, p_ptt, &in_params,
                                         &out_params);
        if (rc)
                return rc;

        *p_mcp_resp = out_params.mcp_resp;

        return 0;
}

int
qed_mcp_get_resc_info(struct qed_hwfn *p_hwfn,
                      struct qed_ptt *p_ptt,
                      enum qed_resources res_id,
                      u32 *p_mcp_resp, u32 *p_resc_num, u32 *p_resc_start)
{
        struct qed_resc_alloc_out_params out_params;
        struct qed_resc_alloc_in_params in_params;
        int rc;

        memset(&in_params, 0, sizeof(in_params));
        in_params.cmd = DRV_MSG_GET_RESOURCE_ALLOC_MSG;
        in_params.res_id = res_id;
        memset(&out_params, 0, sizeof(out_params));
        rc = qed_mcp_resc_allocation_msg(p_hwfn, p_ptt, &in_params,
                                         &out_params);
        if (rc)
                return rc;

        *p_mcp_resp = out_params.mcp_resp;

        if (*p_mcp_resp == FW_MSG_CODE_RESOURCE_ALLOC_OK) {
                *p_resc_num = out_params.resc_num;
                *p_resc_start = out_params.resc_start;
        }

        return 0;
}

int qed_mcp_initiate_pf_flr(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
{
        u32 mcp_resp, mcp_param;

        return qed_mcp_cmd(p_hwfn, p_ptt, DRV_MSG_CODE_INITIATE_PF_FLR, 0,
                           &mcp_resp, &mcp_param);
}

static int qed_mcp_resource_cmd(struct qed_hwfn *p_hwfn,
                                struct qed_ptt *p_ptt,
                                u32 param, u32 *p_mcp_resp, u32 *p_mcp_param)
{
        int rc;

        rc = qed_mcp_cmd(p_hwfn, p_ptt, DRV_MSG_CODE_RESOURCE_CMD, param,
                         p_mcp_resp, p_mcp_param);
        if (rc)
                return rc;

        if (*p_mcp_resp == FW_MSG_CODE_UNSUPPORTED) {
                DP_INFO(p_hwfn,
                        "The resource command is unsupported by the MFW\n");
                return -EINVAL;
        }

        if (*p_mcp_param == RESOURCE_OPCODE_UNKNOWN_CMD) {
                u8 opcode = QED_MFW_GET_FIELD(param, RESOURCE_CMD_REQ_OPCODE);

                DP_NOTICE(p_hwfn,
                          "The resource command is unknown to the MFW [param 0x%08x, opcode %d]\n",
                          param, opcode);
                return -EINVAL;
        }

        return rc;
}

int
__qed_mcp_resc_lock(struct qed_hwfn *p_hwfn,
                    struct qed_ptt *p_ptt,
                    struct qed_resc_lock_params *p_params)
{
        u32 param = 0, mcp_resp, mcp_param;
        u8 opcode;
        int rc;

        switch (p_params->timeout) {
        case QED_MCP_RESC_LOCK_TO_DEFAULT:
                opcode = RESOURCE_OPCODE_REQ;
                p_params->timeout = 0;
                break;
        case QED_MCP_RESC_LOCK_TO_NONE:
                opcode = RESOURCE_OPCODE_REQ_WO_AGING;
                p_params->timeout = 0;
                break;
        default:
                opcode = RESOURCE_OPCODE_REQ_W_AGING;
                break;
        }

        QED_MFW_SET_FIELD(param, RESOURCE_CMD_REQ_RESC, p_params->resource);
        QED_MFW_SET_FIELD(param, RESOURCE_CMD_REQ_OPCODE, opcode);
        QED_MFW_SET_FIELD(param, RESOURCE_CMD_REQ_AGE, p_params->timeout);

        DP_VERBOSE(p_hwfn,
                   QED_MSG_SP,
                   "Resource lock request: param 0x%08x [age %d, opcode %d, resource %d]\n",
                   param, p_params->timeout, opcode, p_params->resource);

        /* Attempt to acquire the resource */
        rc = qed_mcp_resource_cmd(p_hwfn, p_ptt, param, &mcp_resp, &mcp_param);
        if (rc)
                return rc;

        /* Analyze the response */
        p_params->owner = QED_MFW_GET_FIELD(mcp_param, RESOURCE_CMD_RSP_OWNER);
        opcode = QED_MFW_GET_FIELD(mcp_param, RESOURCE_CMD_RSP_OPCODE);

        DP_VERBOSE(p_hwfn,
                   QED_MSG_SP,
                   "Resource lock response: mcp_param 0x%08x [opcode %d, owner %d]\n",
                   mcp_param, opcode, p_params->owner);

        switch (opcode) {
        case RESOURCE_OPCODE_GNT:
                p_params->b_granted = true;
                break;
        case RESOURCE_OPCODE_BUSY:
                p_params->b_granted = false;
                break;
        default:
                DP_NOTICE(p_hwfn,
                          "Unexpected opcode in resource lock response [mcp_param 0x%08x, opcode %d]\n",
                          mcp_param, opcode);
                return -EINVAL;
        }

        return 0;
}

int
qed_mcp_resc_lock(struct qed_hwfn *p_hwfn,
                  struct qed_ptt *p_ptt, struct qed_resc_lock_params *p_params)
{
        u32 retry_cnt = 0;
        int rc;

        do {
                /* No need for an interval before the first iteration */
                if (retry_cnt) {
                        if (p_params->sleep_b4_retry) {
                                u16 retry_interval_in_ms =
                                    DIV_ROUND_UP(p_params->retry_interval,
                                                 1000);

                                msleep(retry_interval_in_ms);
                        } else {
                                udelay(p_params->retry_interval);
                        }
                }

                rc = __qed_mcp_resc_lock(p_hwfn, p_ptt, p_params);
                if (rc)
                        return rc;

                if (p_params->b_granted)
                        break;
        } while (retry_cnt++ < p_params->retry_num);

        return 0;
}

int
qed_mcp_resc_unlock(struct qed_hwfn *p_hwfn,
                    struct qed_ptt *p_ptt,
                    struct qed_resc_unlock_params *p_params)
{
        u32 param = 0, mcp_resp, mcp_param;
        u8 opcode;
        int rc;

        opcode = p_params->b_force ? RESOURCE_OPCODE_FORCE_RELEASE
                                   : RESOURCE_OPCODE_RELEASE;
        QED_MFW_SET_FIELD(param, RESOURCE_CMD_REQ_RESC, p_params->resource);
        QED_MFW_SET_FIELD(param, RESOURCE_CMD_REQ_OPCODE, opcode);

        DP_VERBOSE(p_hwfn, QED_MSG_SP,
                   "Resource unlock request: param 0x%08x [opcode %d, resource %d]\n",
                   param, opcode, p_params->resource);

        /* Attempt to release the resource */
        rc = qed_mcp_resource_cmd(p_hwfn, p_ptt, param, &mcp_resp, &mcp_param);
        if (rc)
                return rc;

        /* Analyze the response */
        opcode = QED_MFW_GET_FIELD(mcp_param, RESOURCE_CMD_RSP_OPCODE);

        DP_VERBOSE(p_hwfn, QED_MSG_SP,
                   "Resource unlock response: mcp_param 0x%08x [opcode %d]\n",
                   mcp_param, opcode);

        switch (opcode) {
        case RESOURCE_OPCODE_RELEASED_PREVIOUS:
                DP_INFO(p_hwfn,
                        "Resource unlock request for an already released resource [%d]\n",
                        p_params->resource);
                /* Fallthrough */
        case RESOURCE_OPCODE_RELEASED:
                p_params->b_released = true;
                break;
        case RESOURCE_OPCODE_WRONG_OWNER:
                p_params->b_released = false;
                break;
        default:
                DP_NOTICE(p_hwfn,
                          "Unexpected opcode in resource unlock response [mcp_param 0x%08x, opcode %d]\n",
                          mcp_param, opcode);
                return -EINVAL;
        }

        return 0;
}