/* 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/bitops.h>
#include <linux/delay.h>
#include <linux/dma-mapping.h>
#include <linux/errno.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/string.h>
#include "qed.h"
#include "qed_cxt.h"
#include "qed_hsi.h"
#include "qed_hw.h"
#include "qed_init_ops.h"
#include "qed_int.h"
#include "qed_ll2.h"
#include "qed_mcp.h"
#include "qed_reg_addr.h"
#include <linux/qed/qed_rdma_if.h>
#include "qed_rdma.h"
#include "qed_roce.h"
#include "qed_sp.h"


int qed_rdma_bmap_alloc(struct qed_hwfn *p_hwfn,
                        struct qed_bmap *bmap, u32 max_count, char *name)
{
        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "max_count = %08x\n", max_count);

        bmap->max_count = max_count;

        bmap->bitmap = kcalloc(BITS_TO_LONGS(max_count), sizeof(long),
                               GFP_KERNEL);
        if (!bmap->bitmap)
                return -ENOMEM;

        snprintf(bmap->name, QED_RDMA_MAX_BMAP_NAME, "%s", name);

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "0\n");
        return 0;
}

int qed_rdma_bmap_alloc_id(struct qed_hwfn *p_hwfn,
                           struct qed_bmap *bmap, u32 *id_num)
{
        *id_num = find_first_zero_bit(bmap->bitmap, bmap->max_count);
        if (*id_num >= bmap->max_count)
                return -EINVAL;

        __set_bit(*id_num, bmap->bitmap);

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "%s bitmap: allocated id %d\n",
                   bmap->name, *id_num);

        return 0;
}

void qed_bmap_set_id(struct qed_hwfn *p_hwfn,
                     struct qed_bmap *bmap, u32 id_num)
{
        if (id_num >= bmap->max_count)
                return;

        __set_bit(id_num, bmap->bitmap);
}

void qed_bmap_release_id(struct qed_hwfn *p_hwfn,
                         struct qed_bmap *bmap, u32 id_num)
{
        bool b_acquired;

        if (id_num >= bmap->max_count)
                return;

        b_acquired = test_and_clear_bit(id_num, bmap->bitmap);
        if (!b_acquired) {
                DP_NOTICE(p_hwfn, "%s bitmap: id %d already released\n",
                          bmap->name, id_num);
                return;
        }

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "%s bitmap: released id %d\n",
                   bmap->name, id_num);
}

int qed_bmap_test_id(struct qed_hwfn *p_hwfn,
                     struct qed_bmap *bmap, u32 id_num)
{
        if (id_num >= bmap->max_count)
                return -1;

        return test_bit(id_num, bmap->bitmap);
}

static bool qed_bmap_is_empty(struct qed_bmap *bmap)
{
        return bmap->max_count == find_first_bit(bmap->bitmap, bmap->max_count);
}

static u32 qed_rdma_get_sb_id(void *p_hwfn, u32 rel_sb_id)
{
        /* First sb id for RoCE is after all the l2 sb */
        return FEAT_NUM((struct qed_hwfn *)p_hwfn, QED_PF_L2_QUE) + rel_sb_id;
}

static int qed_rdma_alloc(struct qed_hwfn *p_hwfn,
                          struct qed_ptt *p_ptt,
                          struct qed_rdma_start_in_params *params)
{
        struct qed_rdma_info *p_rdma_info;
        u32 num_cons, num_tasks;
        int rc = -ENOMEM;

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Allocating RDMA\n");

        /* Allocate a struct with current pf rdma info */
        p_rdma_info = kzalloc(sizeof(*p_rdma_info), GFP_KERNEL);
        if (!p_rdma_info)
                return rc;

        p_hwfn->p_rdma_info = p_rdma_info;
        if (QED_IS_IWARP_PERSONALITY(p_hwfn))
                p_rdma_info->proto = PROTOCOLID_IWARP;
        else
                p_rdma_info->proto = PROTOCOLID_ROCE;

        num_cons = qed_cxt_get_proto_cid_count(p_hwfn, p_rdma_info->proto,
                                               NULL);

        if (QED_IS_IWARP_PERSONALITY(p_hwfn))
                p_rdma_info->num_qps = num_cons;
        else
                p_rdma_info->num_qps = num_cons / 2; /* 2 cids per qp */

        num_tasks = qed_cxt_get_proto_tid_count(p_hwfn, PROTOCOLID_ROCE);

        /* Each MR uses a single task */
        p_rdma_info->num_mrs = num_tasks;

        /* Queue zone lines are shared between RoCE and L2 in such a way that
         * they can be used by each without obstructing the other.
         */
        p_rdma_info->queue_zone_base = (u16)RESC_START(p_hwfn, QED_L2_QUEUE);
        p_rdma_info->max_queue_zones = (u16)RESC_NUM(p_hwfn, QED_L2_QUEUE);

        /* Allocate a struct with device params and fill it */
        p_rdma_info->dev = kzalloc(sizeof(*p_rdma_info->dev), GFP_KERNEL);
        if (!p_rdma_info->dev)
                goto free_rdma_info;

        /* Allocate a struct with port params and fill it */
        p_rdma_info->port = kzalloc(sizeof(*p_rdma_info->port), GFP_KERNEL);
        if (!p_rdma_info->port)
                goto free_rdma_dev;

        /* Allocate bit map for pd's */
        rc = qed_rdma_bmap_alloc(p_hwfn, &p_rdma_info->pd_map, RDMA_MAX_PDS,
                                 "PD");
        if (rc) {
                DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
                           "Failed to allocate pd_map, rc = %d\n",
                           rc);
                goto free_rdma_port;
        }

        /* Allocate DPI bitmap */
        rc = qed_rdma_bmap_alloc(p_hwfn, &p_rdma_info->dpi_map,
                                 p_hwfn->dpi_count, "DPI");
        if (rc) {
                DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
                           "Failed to allocate DPI bitmap, rc = %d\n", rc);
                goto free_pd_map;
        }

        /* Allocate bitmap for cq's. The maximum number of CQs is bound to
         * the number of connections we support. (num_qps in iWARP or
         * num_qps/2 in RoCE).
         */
        rc = qed_rdma_bmap_alloc(p_hwfn, &p_rdma_info->cq_map, num_cons, "CQ");
        if (rc) {
                DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
                           "Failed to allocate cq bitmap, rc = %d\n", rc);
                goto free_dpi_map;
        }

        /* Allocate bitmap for toggle bit for cq icids
         * We toggle the bit every time we create or resize cq for a given icid.
         * Size needs to equal the size of the cq bmap.
         */
        rc = qed_rdma_bmap_alloc(p_hwfn, &p_rdma_info->toggle_bits,
                                 num_cons, "Toggle");
        if (rc) {
                DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
                           "Failed to allocate toggle bits, rc = %d\n", rc);
                goto free_cq_map;
        }

        /* Allocate bitmap for itids */
        rc = qed_rdma_bmap_alloc(p_hwfn, &p_rdma_info->tid_map,
                                 p_rdma_info->num_mrs, "MR");
        if (rc) {
                DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
                           "Failed to allocate itids bitmaps, rc = %d\n", rc);
                goto free_toggle_map;
        }

        /* Allocate bitmap for cids used for qps. */
        rc = qed_rdma_bmap_alloc(p_hwfn, &p_rdma_info->cid_map, num_cons,
                                 "CID");
        if (rc) {
                DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
                           "Failed to allocate cid bitmap, rc = %d\n", rc);
                goto free_tid_map;
        }

        /* Allocate bitmap for cids used for responders/requesters. */
        rc = qed_rdma_bmap_alloc(p_hwfn, &p_rdma_info->real_cid_map, num_cons,
                                 "REAL_CID");
        if (rc) {
                DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
                           "Failed to allocate real cid bitmap, rc = %d\n", rc);
                goto free_cid_map;
        }

        /* Allocate bitmap for srqs */
        p_rdma_info->num_srqs = qed_cxt_get_srq_count(p_hwfn);
        rc = qed_rdma_bmap_alloc(p_hwfn, &p_rdma_info->srq_map,
                                 p_rdma_info->num_srqs, "SRQ");
        if (rc) {
                DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
                           "Failed to allocate srq bitmap, rc = %d\n", rc);
                goto free_real_cid_map;
        }

        if (QED_IS_IWARP_PERSONALITY(p_hwfn))
                rc = qed_iwarp_alloc(p_hwfn);

        if (rc)
                goto free_srq_map;

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Allocation successful\n");
        return 0;

free_srq_map:
        kfree(p_rdma_info->srq_map.bitmap);
free_real_cid_map:
        kfree(p_rdma_info->real_cid_map.bitmap);
free_cid_map:
        kfree(p_rdma_info->cid_map.bitmap);
free_tid_map:
        kfree(p_rdma_info->tid_map.bitmap);
free_toggle_map:
        kfree(p_rdma_info->toggle_bits.bitmap);
free_cq_map:
        kfree(p_rdma_info->cq_map.bitmap);
free_dpi_map:
        kfree(p_rdma_info->dpi_map.bitmap);
free_pd_map:
        kfree(p_rdma_info->pd_map.bitmap);
free_rdma_port:
        kfree(p_rdma_info->port);
free_rdma_dev:
        kfree(p_rdma_info->dev);
free_rdma_info:
        kfree(p_rdma_info);

        return rc;
}

void qed_rdma_bmap_free(struct qed_hwfn *p_hwfn,
                        struct qed_bmap *bmap, bool check)
{
        int weight = bitmap_weight(bmap->bitmap, bmap->max_count);
        int last_line = bmap->max_count / (64 * 8);
        int last_item = last_line * 8 +
            DIV_ROUND_UP(bmap->max_count % (64 * 8), 64);
        u64 *pmap = (u64 *)bmap->bitmap;
        int line, item, offset;
        u8 str_last_line[200] = { 0 };

        if (!weight || !check)
                goto end;

        DP_NOTICE(p_hwfn,
                  "%s bitmap not free - size=%d, weight=%d, 512 bits per line\n",
                  bmap->name, bmap->max_count, weight);

        /* print aligned non-zero lines, if any */
        for (item = 0, line = 0; line < last_line; line++, item += 8)
                if (bitmap_weight((unsigned long *)&pmap[item], 64 * 8))
                        DP_NOTICE(p_hwfn,
                                  "line 0x%04x: 0x%016llx 0x%016llx 0x%016llx 0x%016llx 0x%016llx 0x%016llx 0x%016llx 0x%016llx\n",
                                  line,
                                  pmap[item],
                                  pmap[item + 1],
                                  pmap[item + 2],
                                  pmap[item + 3],
                                  pmap[item + 4],
                                  pmap[item + 5],
                                  pmap[item + 6], pmap[item + 7]);

        /* print last unaligned non-zero line, if any */
        if ((bmap->max_count % (64 * 8)) &&
            (bitmap_weight((unsigned long *)&pmap[item],
                           bmap->max_count - item * 64))) {
                offset = sprintf(str_last_line, "line 0x%04x: ", line);
                for (; item < last_item; item++)
                        offset += sprintf(str_last_line + offset,
                                          "0x%016llx ", pmap[item]);
                DP_NOTICE(p_hwfn, "%s\n", str_last_line);
        }

end:
        kfree(bmap->bitmap);
        bmap->bitmap = NULL;
}

static void qed_rdma_resc_free(struct qed_hwfn *p_hwfn)
{
        struct qed_rdma_info *p_rdma_info = p_hwfn->p_rdma_info;

        if (QED_IS_IWARP_PERSONALITY(p_hwfn))
                qed_iwarp_resc_free(p_hwfn);

        qed_rdma_bmap_free(p_hwfn, &p_hwfn->p_rdma_info->cid_map, 1);
        qed_rdma_bmap_free(p_hwfn, &p_hwfn->p_rdma_info->pd_map, 1);
        qed_rdma_bmap_free(p_hwfn, &p_hwfn->p_rdma_info->dpi_map, 1);
        qed_rdma_bmap_free(p_hwfn, &p_hwfn->p_rdma_info->cq_map, 1);
        qed_rdma_bmap_free(p_hwfn, &p_hwfn->p_rdma_info->toggle_bits, 0);
        qed_rdma_bmap_free(p_hwfn, &p_hwfn->p_rdma_info->tid_map, 1);
        qed_rdma_bmap_free(p_hwfn, &p_hwfn->p_rdma_info->srq_map, 1);
        qed_rdma_bmap_free(p_hwfn, &p_hwfn->p_rdma_info->real_cid_map, 1);

        kfree(p_rdma_info->port);
        kfree(p_rdma_info->dev);

        kfree(p_rdma_info);
}

static void qed_rdma_free_tid(void *rdma_cxt, u32 itid)
{
        struct qed_hwfn *p_hwfn = (struct qed_hwfn *)rdma_cxt;

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "itid = %08x\n", itid);

        spin_lock_bh(&p_hwfn->p_rdma_info->lock);
        qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->tid_map, itid);
        spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
}

static void qed_rdma_free_reserved_lkey(struct qed_hwfn *p_hwfn)
{
        qed_rdma_free_tid(p_hwfn, p_hwfn->p_rdma_info->dev->reserved_lkey);
}

static void qed_rdma_free(struct qed_hwfn *p_hwfn)
{
        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Freeing RDMA\n");

        qed_rdma_free_reserved_lkey(p_hwfn);
        qed_cxt_free_proto_ilt(p_hwfn, p_hwfn->p_rdma_info->proto);
        qed_rdma_resc_free(p_hwfn);
}

static void qed_rdma_get_guid(struct qed_hwfn *p_hwfn, u8 *guid)
{
        guid[0] = p_hwfn->hw_info.hw_mac_addr[0] ^ 2;
        guid[1] = p_hwfn->hw_info.hw_mac_addr[1];
        guid[2] = p_hwfn->hw_info.hw_mac_addr[2];
        guid[3] = 0xff;
        guid[4] = 0xfe;
        guid[5] = p_hwfn->hw_info.hw_mac_addr[3];
        guid[6] = p_hwfn->hw_info.hw_mac_addr[4];
        guid[7] = p_hwfn->hw_info.hw_mac_addr[5];
}

static void qed_rdma_init_events(struct qed_hwfn *p_hwfn,
                                 struct qed_rdma_start_in_params *params)
{
        struct qed_rdma_events *events;

        events = &p_hwfn->p_rdma_info->events;

        events->unaffiliated_event = params->events->unaffiliated_event;
        events->affiliated_event = params->events->affiliated_event;
        events->context = params->events->context;
}

static void qed_rdma_init_devinfo(struct qed_hwfn *p_hwfn,
                                  struct qed_rdma_start_in_params *params)
{
        struct qed_rdma_device *dev = p_hwfn->p_rdma_info->dev;
        struct qed_dev *cdev = p_hwfn->cdev;
        u32 pci_status_control;
        u32 num_qps;

        /* Vendor specific information */
        dev->vendor_id = cdev->vendor_id;
        dev->vendor_part_id = cdev->device_id;
        dev->hw_ver = 0;
        dev->fw_ver = (FW_MAJOR_VERSION << 24) | (FW_MINOR_VERSION << 16) |
                      (FW_REVISION_VERSION << 8) | (FW_ENGINEERING_VERSION);

        qed_rdma_get_guid(p_hwfn, (u8 *)&dev->sys_image_guid);
        dev->node_guid = dev->sys_image_guid;

        dev->max_sge = min_t(u32, RDMA_MAX_SGE_PER_SQ_WQE,
                             RDMA_MAX_SGE_PER_RQ_WQE);

        if (cdev->rdma_max_sge)
                dev->max_sge = min_t(u32, cdev->rdma_max_sge, dev->max_sge);

        dev->max_srq_sge = QED_RDMA_MAX_SGE_PER_SRQ_WQE;
        if (p_hwfn->cdev->rdma_max_srq_sge) {
                dev->max_srq_sge = min_t(u32,
                                         p_hwfn->cdev->rdma_max_srq_sge,
                                         dev->max_srq_sge);
        }
        dev->max_inline = ROCE_REQ_MAX_INLINE_DATA_SIZE;

        dev->max_inline = (cdev->rdma_max_inline) ?
                          min_t(u32, cdev->rdma_max_inline, dev->max_inline) :
                          dev->max_inline;

        dev->max_wqe = QED_RDMA_MAX_WQE;
        dev->max_cnq = (u8)FEAT_NUM(p_hwfn, QED_RDMA_CNQ);

        /* The number of QPs may be higher than QED_ROCE_MAX_QPS, because
         * it is up-aligned to 16 and then to ILT page size within qed cxt.
         * This is OK in terms of ILT but we don't want to configure the FW
         * above its abilities
         */
        num_qps = ROCE_MAX_QPS;
        num_qps = min_t(u64, num_qps, p_hwfn->p_rdma_info->num_qps);
        dev->max_qp = num_qps;

        /* CQs uses the same icids that QPs use hence they are limited by the
         * number of icids. There are two icids per QP.
         */
        dev->max_cq = num_qps * 2;

        /* The number of mrs is smaller by 1 since the first is reserved */
        dev->max_mr = p_hwfn->p_rdma_info->num_mrs - 1;
        dev->max_mr_size = QED_RDMA_MAX_MR_SIZE;

        /* The maximum CQE capacity per CQ supported.
         * max number of cqes will be in two layer pbl,
         * 8 is the pointer size in bytes
         * 32 is the size of cq element in bytes
         */
        if (params->cq_mode == QED_RDMA_CQ_MODE_32_BITS)
                dev->max_cqe = QED_RDMA_MAX_CQE_32_BIT;
        else
                dev->max_cqe = QED_RDMA_MAX_CQE_16_BIT;

        dev->max_mw = 0;
        dev->max_fmr = QED_RDMA_MAX_FMR;
        dev->max_mr_mw_fmr_pbl = (PAGE_SIZE / 8) * (PAGE_SIZE / 8);
        dev->max_mr_mw_fmr_size = dev->max_mr_mw_fmr_pbl * PAGE_SIZE;
        dev->max_pkey = QED_RDMA_MAX_P_KEY;

        dev->max_srq = p_hwfn->p_rdma_info->num_srqs;
        dev->max_srq_wr = QED_RDMA_MAX_SRQ_WQE_ELEM;
        dev->max_qp_resp_rd_atomic_resc = RDMA_RING_PAGE_SIZE /
                                          (RDMA_RESP_RD_ATOMIC_ELM_SIZE * 2);
        dev->max_qp_req_rd_atomic_resc = RDMA_RING_PAGE_SIZE /
                                         RDMA_REQ_RD_ATOMIC_ELM_SIZE;
        dev->max_dev_resp_rd_atomic_resc = dev->max_qp_resp_rd_atomic_resc *
                                           p_hwfn->p_rdma_info->num_qps;
        dev->page_size_caps = QED_RDMA_PAGE_SIZE_CAPS;
        dev->dev_ack_delay = QED_RDMA_ACK_DELAY;
        dev->max_pd = RDMA_MAX_PDS;
        dev->max_ah = p_hwfn->p_rdma_info->num_qps;
        dev->max_stats_queues = (u8)RESC_NUM(p_hwfn, QED_RDMA_STATS_QUEUE);

        /* Set capablities */
        dev->dev_caps = 0;
        SET_FIELD(dev->dev_caps, QED_RDMA_DEV_CAP_RNR_NAK, 1);
        SET_FIELD(dev->dev_caps, QED_RDMA_DEV_CAP_PORT_ACTIVE_EVENT, 1);
        SET_FIELD(dev->dev_caps, QED_RDMA_DEV_CAP_PORT_CHANGE_EVENT, 1);
        SET_FIELD(dev->dev_caps, QED_RDMA_DEV_CAP_RESIZE_CQ, 1);
        SET_FIELD(dev->dev_caps, QED_RDMA_DEV_CAP_BASE_MEMORY_EXT, 1);
        SET_FIELD(dev->dev_caps, QED_RDMA_DEV_CAP_BASE_QUEUE_EXT, 1);
        SET_FIELD(dev->dev_caps, QED_RDMA_DEV_CAP_ZBVA, 1);
        SET_FIELD(dev->dev_caps, QED_RDMA_DEV_CAP_LOCAL_INV_FENCE, 1);

        /* Check atomic operations support in PCI configuration space. */
        pci_read_config_dword(cdev->pdev,
                              cdev->pdev->pcie_cap + PCI_EXP_DEVCTL2,
                              &pci_status_control);

        if (pci_status_control & PCI_EXP_DEVCTL2_LTR_EN)
                SET_FIELD(dev->dev_caps, QED_RDMA_DEV_CAP_ATOMIC_OP, 1);

        if (QED_IS_IWARP_PERSONALITY(p_hwfn))
                qed_iwarp_init_devinfo(p_hwfn);
}

static void qed_rdma_init_port(struct qed_hwfn *p_hwfn)
{
        struct qed_rdma_port *port = p_hwfn->p_rdma_info->port;
        struct qed_rdma_device *dev = p_hwfn->p_rdma_info->dev;

        port->port_state = p_hwfn->mcp_info->link_output.link_up ?
                           QED_RDMA_PORT_UP : QED_RDMA_PORT_DOWN;

        port->max_msg_size = min_t(u64,
                                   (dev->max_mr_mw_fmr_size *
                                    p_hwfn->cdev->rdma_max_sge),
                                   BIT(31));

        port->pkey_bad_counter = 0;
}

static int qed_rdma_init_hw(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
{
        int rc = 0;

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Initializing HW\n");
        p_hwfn->b_rdma_enabled_in_prs = false;

        if (QED_IS_IWARP_PERSONALITY(p_hwfn))
                qed_iwarp_init_hw(p_hwfn, p_ptt);
        else
                rc = qed_roce_init_hw(p_hwfn, p_ptt);

        return rc;
}

static int qed_rdma_start_fw(struct qed_hwfn *p_hwfn,
                             struct qed_rdma_start_in_params *params,
                             struct qed_ptt *p_ptt)
{
        struct rdma_init_func_ramrod_data *p_ramrod;
        struct qed_rdma_cnq_params *p_cnq_pbl_list;
        struct rdma_init_func_hdr *p_params_header;
        struct rdma_cnq_params *p_cnq_params;
        struct qed_sp_init_data init_data;
        struct qed_spq_entry *p_ent;
        u32 cnq_id, sb_id;
        u16 igu_sb_id;
        int rc;

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Starting FW\n");

        /* Save the number of cnqs for the function close ramrod */
        p_hwfn->p_rdma_info->num_cnqs = params->desired_cnq;

        /* Get SPQ entry */
        memset(&init_data, 0, sizeof(init_data));
        init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
        init_data.comp_mode = QED_SPQ_MODE_EBLOCK;

        rc = qed_sp_init_request(p_hwfn, &p_ent, RDMA_RAMROD_FUNC_INIT,
                                 p_hwfn->p_rdma_info->proto, &init_data);
        if (rc)
                return rc;

        if (QED_IS_IWARP_PERSONALITY(p_hwfn)) {
                qed_iwarp_init_fw_ramrod(p_hwfn,
                                         &p_ent->ramrod.iwarp_init_func);
                p_ramrod = &p_ent->ramrod.iwarp_init_func.rdma;
        } else {
                p_ramrod = &p_ent->ramrod.roce_init_func.rdma;
        }

        p_params_header = &p_ramrod->params_header;
        p_params_header->cnq_start_offset = (u8)RESC_START(p_hwfn,
                                                           QED_RDMA_CNQ_RAM);
        p_params_header->num_cnqs = params->desired_cnq;

        if (params->cq_mode == QED_RDMA_CQ_MODE_16_BITS)
                p_params_header->cq_ring_mode = 1;
        else
                p_params_header->cq_ring_mode = 0;

        for (cnq_id = 0; cnq_id < params->desired_cnq; cnq_id++) {
                sb_id = qed_rdma_get_sb_id(p_hwfn, cnq_id);
                igu_sb_id = qed_get_igu_sb_id(p_hwfn, sb_id);
                p_ramrod->cnq_params[cnq_id].sb_num = cpu_to_le16(igu_sb_id);
                p_cnq_params = &p_ramrod->cnq_params[cnq_id];
                p_cnq_pbl_list = &params->cnq_pbl_list[cnq_id];

                p_cnq_params->sb_index = p_hwfn->pf_params.rdma_pf_params.gl_pi;
                p_cnq_params->num_pbl_pages = p_cnq_pbl_list->num_pbl_pages;

                DMA_REGPAIR_LE(p_cnq_params->pbl_base_addr,
                               p_cnq_pbl_list->pbl_ptr);

                /* we assume here that cnq_id and qz_offset are the same */
                p_cnq_params->queue_zone_num =
                        cpu_to_le16(p_hwfn->p_rdma_info->queue_zone_base +
                                    cnq_id);
        }

        return qed_spq_post(p_hwfn, p_ent, NULL);
}

static int qed_rdma_alloc_tid(void *rdma_cxt, u32 *itid)
{
        struct qed_hwfn *p_hwfn = (struct qed_hwfn *)rdma_cxt;
        int rc;

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Allocate TID\n");

        spin_lock_bh(&p_hwfn->p_rdma_info->lock);
        rc = qed_rdma_bmap_alloc_id(p_hwfn,
                                    &p_hwfn->p_rdma_info->tid_map, itid);
        spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
        if (rc)
                goto out;

        rc = qed_cxt_dynamic_ilt_alloc(p_hwfn, QED_ELEM_TASK, *itid);
out:
        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Allocate TID - done, rc = %d\n", rc);
        return rc;
}

static int qed_rdma_reserve_lkey(struct qed_hwfn *p_hwfn)
{
        struct qed_rdma_device *dev = p_hwfn->p_rdma_info->dev;

        /* Tid 0 will be used as the key for "reserved MR".
         * The driver should allocate memory for it so it can be loaded but no
         * ramrod should be passed on it.
         */
        qed_rdma_alloc_tid(p_hwfn, &dev->reserved_lkey);
        if (dev->reserved_lkey != RDMA_RESERVED_LKEY) {
                DP_NOTICE(p_hwfn,
                          "Reserved lkey should be equal to RDMA_RESERVED_LKEY\n");
                return -EINVAL;
        }

        return 0;
}

static int qed_rdma_setup(struct qed_hwfn *p_hwfn,
                          struct qed_ptt *p_ptt,
                          struct qed_rdma_start_in_params *params)
{
        int rc;

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "RDMA setup\n");

        spin_lock_init(&p_hwfn->p_rdma_info->lock);

        qed_rdma_init_devinfo(p_hwfn, params);
        qed_rdma_init_port(p_hwfn);
        qed_rdma_init_events(p_hwfn, params);

        rc = qed_rdma_reserve_lkey(p_hwfn);
        if (rc)
                return rc;

        rc = qed_rdma_init_hw(p_hwfn, p_ptt);
        if (rc)
                return rc;

        if (QED_IS_IWARP_PERSONALITY(p_hwfn)) {
                rc = qed_iwarp_setup(p_hwfn, p_ptt, params);
                if (rc)
                        return rc;
        } else {
                rc = qed_roce_setup(p_hwfn);
                if (rc)
                        return rc;
        }

        return qed_rdma_start_fw(p_hwfn, params, p_ptt);
}

static int qed_rdma_stop(void *rdma_cxt)
{
        struct qed_hwfn *p_hwfn = (struct qed_hwfn *)rdma_cxt;
        struct rdma_close_func_ramrod_data *p_ramrod;
        struct qed_sp_init_data init_data;
        struct qed_spq_entry *p_ent;
        struct qed_ptt *p_ptt;
        u32 ll2_ethertype_en;
        int rc = -EBUSY;

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "RDMA stop\n");

        p_ptt = qed_ptt_acquire(p_hwfn);
        if (!p_ptt) {
                DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Failed to acquire PTT\n");
                return rc;
        }

        /* Disable RoCE search */
        qed_wr(p_hwfn, p_ptt, p_hwfn->rdma_prs_search_reg, 0);
        p_hwfn->b_rdma_enabled_in_prs = false;

        qed_wr(p_hwfn, p_ptt, PRS_REG_ROCE_DEST_QP_MAX_PF, 0);

        ll2_ethertype_en = qed_rd(p_hwfn, p_ptt, PRS_REG_LIGHT_L2_ETHERTYPE_EN);

        qed_wr(p_hwfn, p_ptt, PRS_REG_LIGHT_L2_ETHERTYPE_EN,
               (ll2_ethertype_en & 0xFFFE));

        if (QED_IS_IWARP_PERSONALITY(p_hwfn)) {
                rc = qed_iwarp_stop(p_hwfn, p_ptt);
                if (rc) {
                        qed_ptt_release(p_hwfn, p_ptt);
                        return rc;
                }
        } else {
                qed_roce_stop(p_hwfn);
        }

        qed_ptt_release(p_hwfn, p_ptt);

        /* Get SPQ entry */
        memset(&init_data, 0, sizeof(init_data));
        init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
        init_data.comp_mode = QED_SPQ_MODE_EBLOCK;

        /* Stop RoCE */
        rc = qed_sp_init_request(p_hwfn, &p_ent, RDMA_RAMROD_FUNC_CLOSE,
                                 p_hwfn->p_rdma_info->proto, &init_data);
        if (rc)
                goto out;

        p_ramrod = &p_ent->ramrod.rdma_close_func;

        p_ramrod->num_cnqs = p_hwfn->p_rdma_info->num_cnqs;
        p_ramrod->cnq_start_offset = (u8)RESC_START(p_hwfn, QED_RDMA_CNQ_RAM);

        rc = qed_spq_post(p_hwfn, p_ent, NULL);

out:
        qed_rdma_free(p_hwfn);

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "RDMA stop done, rc = %d\n", rc);
        return rc;
}

static int qed_rdma_add_user(void *rdma_cxt,
                             struct qed_rdma_add_user_out_params *out_params)
{
        struct qed_hwfn *p_hwfn = (struct qed_hwfn *)rdma_cxt;
        u32 dpi_start_offset;
        u32 returned_id = 0;
        int rc;

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Adding User\n");

        /* Allocate DPI */
        spin_lock_bh(&p_hwfn->p_rdma_info->lock);
        rc = qed_rdma_bmap_alloc_id(p_hwfn, &p_hwfn->p_rdma_info->dpi_map,
                                    &returned_id);
        spin_unlock_bh(&p_hwfn->p_rdma_info->lock);

        out_params->dpi = (u16)returned_id;

        /* Calculate the corresponding DPI address */
        dpi_start_offset = p_hwfn->dpi_start_offset;

        out_params->dpi_addr = (u64)((u8 __iomem *)p_hwfn->doorbells +
                                     dpi_start_offset +
                                     ((out_params->dpi) * p_hwfn->dpi_size));

        out_params->dpi_phys_addr = p_hwfn->cdev->db_phys_addr +
                                    dpi_start_offset +
                                    ((out_params->dpi) * p_hwfn->dpi_size);

        out_params->dpi_size = p_hwfn->dpi_size;
        out_params->wid_count = p_hwfn->wid_count;

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Adding user - done, rc = %d\n", rc);
        return rc;
}

static struct qed_rdma_port *qed_rdma_query_port(void *rdma_cxt)
{
        struct qed_hwfn *p_hwfn = (struct qed_hwfn *)rdma_cxt;
        struct qed_rdma_port *p_port = p_hwfn->p_rdma_info->port;

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "RDMA Query port\n");

        /* Link may have changed */
        p_port->port_state = p_hwfn->mcp_info->link_output.link_up ?
                             QED_RDMA_PORT_UP : QED_RDMA_PORT_DOWN;

        p_port->link_speed = p_hwfn->mcp_info->link_output.speed;

        p_port->max_msg_size = RDMA_MAX_DATA_SIZE_IN_WQE;

        return p_port;
}

static struct qed_rdma_device *qed_rdma_query_device(void *rdma_cxt)
{
        struct qed_hwfn *p_hwfn = (struct qed_hwfn *)rdma_cxt;

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Query device\n");

        /* Return struct with device parameters */
        return p_hwfn->p_rdma_info->dev;
}

static void qed_rdma_cnq_prod_update(void *rdma_cxt, u8 qz_offset, u16 prod)
{
        struct qed_hwfn *p_hwfn;
        u16 qz_num;
        u32 addr;

        p_hwfn = (struct qed_hwfn *)rdma_cxt;

        if (qz_offset > p_hwfn->p_rdma_info->max_queue_zones) {
                DP_NOTICE(p_hwfn,
                          "queue zone offset %d is too large (max is %d)\n",
                          qz_offset, p_hwfn->p_rdma_info->max_queue_zones);
                return;
        }

        qz_num = p_hwfn->p_rdma_info->queue_zone_base + qz_offset;
        addr = GTT_BAR0_MAP_REG_USDM_RAM +
               USTORM_COMMON_QUEUE_CONS_OFFSET(qz_num);

        REG_WR16(p_hwfn, addr, prod);

        /* keep prod updates ordered */
        wmb();
}

static int qed_fill_rdma_dev_info(struct qed_dev *cdev,
                                  struct qed_dev_rdma_info *info)
{
        struct qed_hwfn *p_hwfn = QED_LEADING_HWFN(cdev);

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

        info->rdma_type = QED_IS_ROCE_PERSONALITY(p_hwfn) ?
            QED_RDMA_TYPE_ROCE : QED_RDMA_TYPE_IWARP;

        info->user_dpm_enabled = (p_hwfn->db_bar_no_edpm == 0);

        qed_fill_dev_info(cdev, &info->common);

        return 0;
}

static int qed_rdma_get_sb_start(struct qed_dev *cdev)
{
        int feat_num;

        if (cdev->num_hwfns > 1)
                feat_num = FEAT_NUM(QED_LEADING_HWFN(cdev), QED_PF_L2_QUE);
        else
                feat_num = FEAT_NUM(QED_LEADING_HWFN(cdev), QED_PF_L2_QUE) *
                           cdev->num_hwfns;

        return feat_num;
}

static int qed_rdma_get_min_cnq_msix(struct qed_dev *cdev)
{
        int n_cnq = FEAT_NUM(QED_LEADING_HWFN(cdev), QED_RDMA_CNQ);
        int n_msix = cdev->int_params.rdma_msix_cnt;

        return min_t(int, n_cnq, n_msix);
}

static int qed_rdma_set_int(struct qed_dev *cdev, u16 cnt)
{
        int limit = 0;

        /* Mark the fastpath as free/used */
        cdev->int_params.fp_initialized = cnt ? true : false;

        if (cdev->int_params.out.int_mode != QED_INT_MODE_MSIX) {
                DP_ERR(cdev,
                       "qed roce supports only MSI-X interrupts (detected %d).\n",
                       cdev->int_params.out.int_mode);
                return -EINVAL;
        } else if (cdev->int_params.fp_msix_cnt) {
                limit = cdev->int_params.rdma_msix_cnt;
        }

        if (!limit)
                return -ENOMEM;

        return min_t(int, cnt, limit);
}

static int qed_rdma_get_int(struct qed_dev *cdev, struct qed_int_info *info)
{
        memset(info, 0, sizeof(*info));

        if (!cdev->int_params.fp_initialized) {
                DP_INFO(cdev,
                        "Protocol driver requested interrupt information, but its support is not yet configured\n");
                return -EINVAL;
        }

        if (cdev->int_params.out.int_mode == QED_INT_MODE_MSIX) {
                int msix_base = cdev->int_params.rdma_msix_base;

                info->msix_cnt = cdev->int_params.rdma_msix_cnt;
                info->msix = &cdev->int_params.msix_table[msix_base];

                DP_VERBOSE(cdev, QED_MSG_RDMA, "msix_cnt = %d msix_base=%d\n",
                           info->msix_cnt, msix_base);
        }

        return 0;
}

static int qed_rdma_alloc_pd(void *rdma_cxt, u16 *pd)
{
        struct qed_hwfn *p_hwfn = (struct qed_hwfn *)rdma_cxt;
        u32 returned_id;
        int rc;

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Alloc PD\n");

        /* Allocates an unused protection domain */
        spin_lock_bh(&p_hwfn->p_rdma_info->lock);
        rc = qed_rdma_bmap_alloc_id(p_hwfn,
                                    &p_hwfn->p_rdma_info->pd_map, &returned_id);
        spin_unlock_bh(&p_hwfn->p_rdma_info->lock);

        *pd = (u16)returned_id;

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Alloc PD - done, rc = %d\n", rc);
        return rc;
}

static void qed_rdma_free_pd(void *rdma_cxt, u16 pd)
{
        struct qed_hwfn *p_hwfn = (struct qed_hwfn *)rdma_cxt;

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "pd = %08x\n", pd);

        /* Returns a previously allocated protection domain for reuse */
        spin_lock_bh(&p_hwfn->p_rdma_info->lock);
        qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->pd_map, pd);
        spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
}

static enum qed_rdma_toggle_bit
qed_rdma_toggle_bit_create_resize_cq(struct qed_hwfn *p_hwfn, u16 icid)
{
        struct qed_rdma_info *p_info = p_hwfn->p_rdma_info;
        enum qed_rdma_toggle_bit toggle_bit;
        u32 bmap_id;

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "icid = %08x\n", icid);

        /* the function toggle the bit that is related to a given icid
         * and returns the new toggle bit's value
         */
        bmap_id = icid - qed_cxt_get_proto_cid_start(p_hwfn, p_info->proto);

        spin_lock_bh(&p_info->lock);
        toggle_bit = !test_and_change_bit(bmap_id,
                                          p_info->toggle_bits.bitmap);
        spin_unlock_bh(&p_info->lock);

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QED_RDMA_TOGGLE_BIT_= %d\n",
                   toggle_bit);

        return toggle_bit;
}

static int qed_rdma_create_cq(void *rdma_cxt,
                              struct qed_rdma_create_cq_in_params *params,
                              u16 *icid)
{
        struct qed_hwfn *p_hwfn = (struct qed_hwfn *)rdma_cxt;
        struct qed_rdma_info *p_info = p_hwfn->p_rdma_info;
        struct rdma_create_cq_ramrod_data *p_ramrod;
        enum qed_rdma_toggle_bit toggle_bit;
        struct qed_sp_init_data init_data;
        struct qed_spq_entry *p_ent;
        u32 returned_id, start_cid;
        int rc;

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "cq_handle = %08x%08x\n",
                   params->cq_handle_hi, params->cq_handle_lo);

        /* Allocate icid */
        spin_lock_bh(&p_info->lock);
        rc = qed_rdma_bmap_alloc_id(p_hwfn, &p_info->cq_map, &returned_id);
        spin_unlock_bh(&p_info->lock);

        if (rc) {
                DP_NOTICE(p_hwfn, "Can't create CQ, rc = %d\n", rc);
                return rc;
        }

        start_cid = qed_cxt_get_proto_cid_start(p_hwfn,
                                                p_info->proto);
        *icid = returned_id + start_cid;

        /* Check if icid requires a page allocation */
        rc = qed_cxt_dynamic_ilt_alloc(p_hwfn, QED_ELEM_CXT, *icid);
        if (rc)
                goto err;

        /* Get SPQ entry */
        memset(&init_data, 0, sizeof(init_data));
        init_data.cid = *icid;
        init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
        init_data.comp_mode = QED_SPQ_MODE_EBLOCK;

        /* Send create CQ ramrod */
        rc = qed_sp_init_request(p_hwfn, &p_ent,
                                 RDMA_RAMROD_CREATE_CQ,
                                 p_info->proto, &init_data);
        if (rc)
                goto err;

        p_ramrod = &p_ent->ramrod.rdma_create_cq;

        p_ramrod->cq_handle.hi = cpu_to_le32(params->cq_handle_hi);
        p_ramrod->cq_handle.lo = cpu_to_le32(params->cq_handle_lo);
        p_ramrod->dpi = cpu_to_le16(params->dpi);
        p_ramrod->is_two_level_pbl = params->pbl_two_level;
        p_ramrod->max_cqes = cpu_to_le32(params->cq_size);
        DMA_REGPAIR_LE(p_ramrod->pbl_addr, params->pbl_ptr);
        p_ramrod->pbl_num_pages = cpu_to_le16(params->pbl_num_pages);
        p_ramrod->cnq_id = (u8)RESC_START(p_hwfn, QED_RDMA_CNQ_RAM) +
                           params->cnq_id;
        p_ramrod->int_timeout = params->int_timeout;

        /* toggle the bit for every resize or create cq for a given icid */
        toggle_bit = qed_rdma_toggle_bit_create_resize_cq(p_hwfn, *icid);

        p_ramrod->toggle_bit = toggle_bit;

        rc = qed_spq_post(p_hwfn, p_ent, NULL);
        if (rc) {
                /* restore toggle bit */
                qed_rdma_toggle_bit_create_resize_cq(p_hwfn, *icid);
                goto err;
        }

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Created CQ, rc = %d\n", rc);
        return rc;

err:
        /* release allocated icid */
        spin_lock_bh(&p_info->lock);
        qed_bmap_release_id(p_hwfn, &p_info->cq_map, returned_id);
        spin_unlock_bh(&p_info->lock);
        DP_NOTICE(p_hwfn, "Create CQ failed, rc = %d\n", rc);

        return rc;
}

static int
qed_rdma_destroy_cq(void *rdma_cxt,
                    struct qed_rdma_destroy_cq_in_params *in_params,
                    struct qed_rdma_destroy_cq_out_params *out_params)
{
        struct qed_hwfn *p_hwfn = (struct qed_hwfn *)rdma_cxt;
        struct rdma_destroy_cq_output_params *p_ramrod_res;
        struct rdma_destroy_cq_ramrod_data *p_ramrod;
        struct qed_sp_init_data init_data;
        struct qed_spq_entry *p_ent;
        dma_addr_t ramrod_res_phys;
        enum protocol_type proto;
        int rc = -ENOMEM;

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "icid = %08x\n", in_params->icid);

        p_ramrod_res =
            (struct rdma_destroy_cq_output_params *)
            dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
                               sizeof(struct rdma_destroy_cq_output_params),
                               &ramrod_res_phys, GFP_KERNEL);
        if (!p_ramrod_res) {
                DP_NOTICE(p_hwfn,
                          "qed destroy cq failed: cannot allocate memory (ramrod)\n");
                return rc;
        }

        /* Get SPQ entry */
        memset(&init_data, 0, sizeof(init_data));
        init_data.cid = in_params->icid;
        init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
        init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
        proto = p_hwfn->p_rdma_info->proto;
        /* Send destroy CQ ramrod */
        rc = qed_sp_init_request(p_hwfn, &p_ent,
                                 RDMA_RAMROD_DESTROY_CQ,
                                 proto, &init_data);
        if (rc)
                goto err;

        p_ramrod = &p_ent->ramrod.rdma_destroy_cq;
        DMA_REGPAIR_LE(p_ramrod->output_params_addr, ramrod_res_phys);

        rc = qed_spq_post(p_hwfn, p_ent, NULL);
        if (rc)
                goto err;

        out_params->num_cq_notif = le16_to_cpu(p_ramrod_res->cnq_num);

        dma_free_coherent(&p_hwfn->cdev->pdev->dev,
                          sizeof(struct rdma_destroy_cq_output_params),
                          p_ramrod_res, ramrod_res_phys);

        /* Free icid */
        spin_lock_bh(&p_hwfn->p_rdma_info->lock);

        qed_bmap_release_id(p_hwfn,
                            &p_hwfn->p_rdma_info->cq_map,
                            (in_params->icid -
                             qed_cxt_get_proto_cid_start(p_hwfn, proto)));

        spin_unlock_bh(&p_hwfn->p_rdma_info->lock);

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Destroyed CQ, rc = %d\n", rc);
        return rc;

err:    dma_free_coherent(&p_hwfn->cdev->pdev->dev,
                          sizeof(struct rdma_destroy_cq_output_params),
                          p_ramrod_res, ramrod_res_phys);

        return rc;
}

void qed_rdma_set_fw_mac(u16 *p_fw_mac, u8 *p_qed_mac)
{
        p_fw_mac[0] = cpu_to_le16((p_qed_mac[0] << 8) + p_qed_mac[1]);
        p_fw_mac[1] = cpu_to_le16((p_qed_mac[2] << 8) + p_qed_mac[3]);
        p_fw_mac[2] = cpu_to_le16((p_qed_mac[4] << 8) + p_qed_mac[5]);
}

static int qed_rdma_query_qp(void *rdma_cxt,
                             struct qed_rdma_qp *qp,
                             struct qed_rdma_query_qp_out_params *out_params)
{
        struct qed_hwfn *p_hwfn = (struct qed_hwfn *)rdma_cxt;
        int rc = 0;

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "icid = %08x\n", qp->icid);

        /* The following fields are filled in from qp and not FW as they can't
         * be modified by FW
         */
        out_params->mtu = qp->mtu;
        out_params->dest_qp = qp->dest_qp;
        out_params->incoming_atomic_en = qp->incoming_atomic_en;
        out_params->e2e_flow_control_en = qp->e2e_flow_control_en;
        out_params->incoming_rdma_read_en = qp->incoming_rdma_read_en;
        out_params->incoming_rdma_write_en = qp->incoming_rdma_write_en;
        out_params->dgid = qp->dgid;
        out_params->flow_label = qp->flow_label;
        out_params->hop_limit_ttl = qp->hop_limit_ttl;
        out_params->traffic_class_tos = qp->traffic_class_tos;
        out_params->timeout = qp->ack_timeout;
        out_params->rnr_retry = qp->rnr_retry_cnt;
        out_params->retry_cnt = qp->retry_cnt;
        out_params->min_rnr_nak_timer = qp->min_rnr_nak_timer;
        out_params->pkey_index = 0;
        out_params->max_rd_atomic = qp->max_rd_atomic_req;
        out_params->max_dest_rd_atomic = qp->max_rd_atomic_resp;
        out_params->sqd_async = qp->sqd_async;

        if (QED_IS_IWARP_PERSONALITY(p_hwfn))
                qed_iwarp_query_qp(qp, out_params);
        else
                rc = qed_roce_query_qp(p_hwfn, qp, out_params);

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Query QP, rc = %d\n", rc);
        return rc;
}

static int qed_rdma_destroy_qp(void *rdma_cxt, struct qed_rdma_qp *qp)
{
        struct qed_hwfn *p_hwfn = (struct qed_hwfn *)rdma_cxt;
        int rc = 0;

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "icid = %08x\n", qp->icid);

        if (QED_IS_IWARP_PERSONALITY(p_hwfn))
                rc = qed_iwarp_destroy_qp(p_hwfn, qp);
        else
                rc = qed_roce_destroy_qp(p_hwfn, qp);

        /* free qp params struct */
        kfree(qp);

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP destroyed\n");
        return rc;
}

static struct qed_rdma_qp *
qed_rdma_create_qp(void *rdma_cxt,
                   struct qed_rdma_create_qp_in_params *in_params,
                   struct qed_rdma_create_qp_out_params *out_params)
{
        struct qed_hwfn *p_hwfn = (struct qed_hwfn *)rdma_cxt;
        struct qed_rdma_qp *qp;
        u8 max_stats_queues;
        int rc;

        if (!rdma_cxt || !in_params || !out_params || !p_hwfn->p_rdma_info) {
                DP_ERR(p_hwfn->cdev,
                       "qed roce create qp failed due to NULL entry (rdma_cxt=%p, in=%p, out=%p, roce_info=?\n",
                       rdma_cxt, in_params, out_params);
                return NULL;
        }

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
                   "qed rdma create qp called with qp_handle = %08x%08x\n",
                   in_params->qp_handle_hi, in_params->qp_handle_lo);

        /* Some sanity checks... */
        max_stats_queues = p_hwfn->p_rdma_info->dev->max_stats_queues;
        if (in_params->stats_queue >= max_stats_queues) {
                DP_ERR(p_hwfn->cdev,
                       "qed rdma create qp failed due to invalid statistics queue %d. maximum is %d\n",
                       in_params->stats_queue, max_stats_queues);
                return NULL;
        }

        if (QED_IS_IWARP_PERSONALITY(p_hwfn)) {
                if (in_params->sq_num_pages * sizeof(struct regpair) >
                    IWARP_SHARED_QUEUE_PAGE_SQ_PBL_MAX_SIZE) {
                        DP_NOTICE(p_hwfn->cdev,
                                  "Sq num pages: %d exceeds maximum\n",
                                  in_params->sq_num_pages);
                        return NULL;
                }
                if (in_params->rq_num_pages * sizeof(struct regpair) >
                    IWARP_SHARED_QUEUE_PAGE_RQ_PBL_MAX_SIZE) {
                        DP_NOTICE(p_hwfn->cdev,
                                  "Rq num pages: %d exceeds maximum\n",
                                  in_params->rq_num_pages);
                        return NULL;
                }
        }

        qp = kzalloc(sizeof(*qp), GFP_KERNEL);
        if (!qp)
                return NULL;

        qp->cur_state = QED_ROCE_QP_STATE_RESET;
        qp->qp_handle.hi = cpu_to_le32(in_params->qp_handle_hi);
        qp->qp_handle.lo = cpu_to_le32(in_params->qp_handle_lo);
        qp->qp_handle_async.hi = cpu_to_le32(in_params->qp_handle_async_hi);
        qp->qp_handle_async.lo = cpu_to_le32(in_params->qp_handle_async_lo);
        qp->use_srq = in_params->use_srq;
        qp->signal_all = in_params->signal_all;
        qp->fmr_and_reserved_lkey = in_params->fmr_and_reserved_lkey;
        qp->pd = in_params->pd;
        qp->dpi = in_params->dpi;
        qp->sq_cq_id = in_params->sq_cq_id;
        qp->sq_num_pages = in_params->sq_num_pages;
        qp->sq_pbl_ptr = in_params->sq_pbl_ptr;
        qp->rq_cq_id = in_params->rq_cq_id;
        qp->rq_num_pages = in_params->rq_num_pages;
        qp->rq_pbl_ptr = in_params->rq_pbl_ptr;
        qp->srq_id = in_params->srq_id;
        qp->req_offloaded = false;
        qp->resp_offloaded = false;
        qp->e2e_flow_control_en = qp->use_srq ? false : true;
        qp->stats_queue = in_params->stats_queue;

        if (QED_IS_IWARP_PERSONALITY(p_hwfn)) {
                rc = qed_iwarp_create_qp(p_hwfn, qp, out_params);
                qp->qpid = qp->icid;
        } else {
                rc = qed_roce_alloc_cid(p_hwfn, &qp->icid);
                qp->qpid = ((0xFF << 16) | qp->icid);
        }

        if (rc) {
                kfree(qp);
                return NULL;
        }

        out_params->icid = qp->icid;
        out_params->qp_id = qp->qpid;

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Create QP, rc = %d\n", rc);
        return qp;
}

static int qed_rdma_modify_qp(void *rdma_cxt,
                              struct qed_rdma_qp *qp,
                              struct qed_rdma_modify_qp_in_params *params)
{
        struct qed_hwfn *p_hwfn = (struct qed_hwfn *)rdma_cxt;
        enum qed_roce_qp_state prev_state;
        int rc = 0;

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "icid = %08x params->new_state=%d\n",
                   qp->icid, params->new_state);

        if (rc) {
                DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "rc = %d\n", rc);
                return rc;
        }

        if (GET_FIELD(params->modify_flags,
                      QED_RDMA_MODIFY_QP_VALID_RDMA_OPS_EN)) {
                qp->incoming_rdma_read_en = params->incoming_rdma_read_en;
                qp->incoming_rdma_write_en = params->incoming_rdma_write_en;
                qp->incoming_atomic_en = params->incoming_atomic_en;
        }

        /* Update QP structure with the updated values */
        if (GET_FIELD(params->modify_flags, QED_ROCE_MODIFY_QP_VALID_ROCE_MODE))
                qp->roce_mode = params->roce_mode;
        if (GET_FIELD(params->modify_flags, QED_ROCE_MODIFY_QP_VALID_PKEY))
                qp->pkey = params->pkey;
        if (GET_FIELD(params->modify_flags,
                      QED_ROCE_MODIFY_QP_VALID_E2E_FLOW_CONTROL_EN))
                qp->e2e_flow_control_en = params->e2e_flow_control_en;
        if (GET_FIELD(params->modify_flags, QED_ROCE_MODIFY_QP_VALID_DEST_QP))
                qp->dest_qp = params->dest_qp;
        if (GET_FIELD(params->modify_flags,
                      QED_ROCE_MODIFY_QP_VALID_ADDRESS_VECTOR)) {
                /* Indicates that the following parameters have changed:
                 * Traffic class, flow label, hop limit, source GID,
                 * destination GID, loopback indicator
                 */
                qp->traffic_class_tos = params->traffic_class_tos;
                qp->flow_label = params->flow_label;
                qp->hop_limit_ttl = params->hop_limit_ttl;

                qp->sgid = params->sgid;
                qp->dgid = params->dgid;
                qp->udp_src_port = 0;
                qp->vlan_id = params->vlan_id;
                qp->mtu = params->mtu;
                qp->lb_indication = params->lb_indication;
                memcpy((u8 *)&qp->remote_mac_addr[0],
                       (u8 *)&params->remote_mac_addr[0], ETH_ALEN);
                if (params->use_local_mac) {
                        memcpy((u8 *)&qp->local_mac_addr[0],
                               (u8 *)&params->local_mac_addr[0], ETH_ALEN);
                } else {
                        memcpy((u8 *)&qp->local_mac_addr[0],
                               (u8 *)&p_hwfn->hw_info.hw_mac_addr, ETH_ALEN);
                }
        }
        if (GET_FIELD(params->modify_flags, QED_ROCE_MODIFY_QP_VALID_RQ_PSN))
                qp->rq_psn = params->rq_psn;
        if (GET_FIELD(params->modify_flags, QED_ROCE_MODIFY_QP_VALID_SQ_PSN))
                qp->sq_psn = params->sq_psn;
        if (GET_FIELD(params->modify_flags,
                      QED_RDMA_MODIFY_QP_VALID_MAX_RD_ATOMIC_REQ))
                qp->max_rd_atomic_req = params->max_rd_atomic_req;
        if (GET_FIELD(params->modify_flags,
                      QED_RDMA_MODIFY_QP_VALID_MAX_RD_ATOMIC_RESP))
                qp->max_rd_atomic_resp = params->max_rd_atomic_resp;
        if (GET_FIELD(params->modify_flags,
                      QED_ROCE_MODIFY_QP_VALID_ACK_TIMEOUT))
                qp->ack_timeout = params->ack_timeout;
        if (GET_FIELD(params->modify_flags, QED_ROCE_MODIFY_QP_VALID_RETRY_CNT))
                qp->retry_cnt = params->retry_cnt;
        if (GET_FIELD(params->modify_flags,
                      QED_ROCE_MODIFY_QP_VALID_RNR_RETRY_CNT))
                qp->rnr_retry_cnt = params->rnr_retry_cnt;
        if (GET_FIELD(params->modify_flags,
                      QED_ROCE_MODIFY_QP_VALID_MIN_RNR_NAK_TIMER))
                qp->min_rnr_nak_timer = params->min_rnr_nak_timer;

        qp->sqd_async = params->sqd_async;

        prev_state = qp->cur_state;
        if (GET_FIELD(params->modify_flags,
                      QED_RDMA_MODIFY_QP_VALID_NEW_STATE)) {
                qp->cur_state = params->new_state;
                DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "qp->cur_state=%d\n",
                           qp->cur_state);
        }

        if (QED_IS_IWARP_PERSONALITY(p_hwfn)) {
                enum qed_iwarp_qp_state new_state =
                    qed_roce2iwarp_state(qp->cur_state);

                rc = qed_iwarp_modify_qp(p_hwfn, qp, new_state, 0);
        } else {
                rc = qed_roce_modify_qp(p_hwfn, qp, prev_state, params);
        }

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Modify QP, rc = %d\n", rc);
        return rc;
}

static int
qed_rdma_register_tid(void *rdma_cxt,
                      struct qed_rdma_register_tid_in_params *params)
{
        struct qed_hwfn *p_hwfn = (struct qed_hwfn *)rdma_cxt;
        struct rdma_register_tid_ramrod_data *p_ramrod;
        struct qed_sp_init_data init_data;
        struct qed_spq_entry *p_ent;
        enum rdma_tid_type tid_type;
        u8 fw_return_code;
        int rc;

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "itid = %08x\n", params->itid);

        /* Get SPQ entry */
        memset(&init_data, 0, sizeof(init_data));
        init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
        init_data.comp_mode = QED_SPQ_MODE_EBLOCK;

        rc = qed_sp_init_request(p_hwfn, &p_ent, RDMA_RAMROD_REGISTER_MR,
                                 p_hwfn->p_rdma_info->proto, &init_data);
        if (rc) {
                DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "rc = %d\n", rc);
                return rc;
        }

        if (p_hwfn->p_rdma_info->last_tid < params->itid)
                p_hwfn->p_rdma_info->last_tid = params->itid;

        p_ramrod = &p_ent->ramrod.rdma_register_tid;

        p_ramrod->flags = 0;
        SET_FIELD(p_ramrod->flags,
                  RDMA_REGISTER_TID_RAMROD_DATA_TWO_LEVEL_PBL,
                  params->pbl_two_level);

        SET_FIELD(p_ramrod->flags,
                  RDMA_REGISTER_TID_RAMROD_DATA_ZERO_BASED, params->zbva);

        SET_FIELD(p_ramrod->flags,
                  RDMA_REGISTER_TID_RAMROD_DATA_PHY_MR, params->phy_mr);

        /* Don't initialize D/C field, as it may override other bits. */
        if (!(params->tid_type == QED_RDMA_TID_FMR) && !(params->dma_mr))
                SET_FIELD(p_ramrod->flags,
                          RDMA_REGISTER_TID_RAMROD_DATA_PAGE_SIZE_LOG,
                          params->page_size_log - 12);

        SET_FIELD(p_ramrod->flags,
                  RDMA_REGISTER_TID_RAMROD_DATA_REMOTE_READ,
                  params->remote_read);

        SET_FIELD(p_ramrod->flags,
                  RDMA_REGISTER_TID_RAMROD_DATA_REMOTE_WRITE,
                  params->remote_write);

        SET_FIELD(p_ramrod->flags,
                  RDMA_REGISTER_TID_RAMROD_DATA_REMOTE_ATOMIC,
                  params->remote_atomic);

        SET_FIELD(p_ramrod->flags,
                  RDMA_REGISTER_TID_RAMROD_DATA_LOCAL_WRITE,
                  params->local_write);

        SET_FIELD(p_ramrod->flags,
                  RDMA_REGISTER_TID_RAMROD_DATA_LOCAL_READ, params->local_read);

        SET_FIELD(p_ramrod->flags,
                  RDMA_REGISTER_TID_RAMROD_DATA_ENABLE_MW_BIND,
                  params->mw_bind);

        SET_FIELD(p_ramrod->flags1,
                  RDMA_REGISTER_TID_RAMROD_DATA_PBL_PAGE_SIZE_LOG,
                  params->pbl_page_size_log - 12);

        SET_FIELD(p_ramrod->flags2,
                  RDMA_REGISTER_TID_RAMROD_DATA_DMA_MR, params->dma_mr);

        switch (params->tid_type) {
        case QED_RDMA_TID_REGISTERED_MR:
                tid_type = RDMA_TID_REGISTERED_MR;
                break;
        case QED_RDMA_TID_FMR:
                tid_type = RDMA_TID_FMR;
                break;
        case QED_RDMA_TID_MW:
                tid_type = RDMA_TID_MW;
                break;
        default:
                rc = -EINVAL;
                DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "rc = %d\n", rc);
                return rc;
        }
        SET_FIELD(p_ramrod->flags1,
                  RDMA_REGISTER_TID_RAMROD_DATA_TID_TYPE, tid_type);

        p_ramrod->itid = cpu_to_le32(params->itid);
        p_ramrod->key = params->key;
        p_ramrod->pd = cpu_to_le16(params->pd);
        p_ramrod->length_hi = (u8)(params->length >> 32);
        p_ramrod->length_lo = DMA_LO_LE(params->length);
        if (params->zbva) {
                /* Lower 32 bits of the registered MR address.
                 * In case of zero based MR, will hold FBO
                 */
                p_ramrod->va.hi = 0;
                p_ramrod->va.lo = cpu_to_le32(params->fbo);
        } else {
                DMA_REGPAIR_LE(p_ramrod->va, params->vaddr);
        }
        DMA_REGPAIR_LE(p_ramrod->pbl_base, params->pbl_ptr);

        /* DIF */
        if (params->dif_enabled) {
                SET_FIELD(p_ramrod->flags2,
                          RDMA_REGISTER_TID_RAMROD_DATA_DIF_ON_HOST_FLG, 1);
                DMA_REGPAIR_LE(p_ramrod->dif_error_addr,
                               params->dif_error_addr);
        }

        rc = qed_spq_post(p_hwfn, p_ent, &fw_return_code);
        if (rc)
                return rc;

        if (fw_return_code != RDMA_RETURN_OK) {
                DP_NOTICE(p_hwfn, "fw_return_code = %d\n", fw_return_code);
                return -EINVAL;
        }

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Register TID, rc = %d\n", rc);
        return rc;
}

static int qed_rdma_deregister_tid(void *rdma_cxt, u32 itid)
{
        struct qed_hwfn *p_hwfn = (struct qed_hwfn *)rdma_cxt;
        struct rdma_deregister_tid_ramrod_data *p_ramrod;
        struct qed_sp_init_data init_data;
        struct qed_spq_entry *p_ent;
        struct qed_ptt *p_ptt;
        u8 fw_return_code;
        int rc;

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "itid = %08x\n", itid);

        /* Get SPQ entry */
        memset(&init_data, 0, sizeof(init_data));
        init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
        init_data.comp_mode = QED_SPQ_MODE_EBLOCK;

        rc = qed_sp_init_request(p_hwfn, &p_ent, RDMA_RAMROD_DEREGISTER_MR,
                                 p_hwfn->p_rdma_info->proto, &init_data);
        if (rc) {
                DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "rc = %d\n", rc);
                return rc;
        }

        p_ramrod = &p_ent->ramrod.rdma_deregister_tid;
        p_ramrod->itid = cpu_to_le32(itid);

        rc = qed_spq_post(p_hwfn, p_ent, &fw_return_code);
        if (rc) {
                DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "rc = %d\n", rc);
                return rc;
        }

        if (fw_return_code == RDMA_RETURN_DEREGISTER_MR_BAD_STATE_ERR) {
                DP_NOTICE(p_hwfn, "fw_return_code = %d\n", fw_return_code);
                return -EINVAL;
        } else if (fw_return_code == RDMA_RETURN_NIG_DRAIN_REQ) {
                /* Bit indicating that the TID is in use and a nig drain is
                 * required before sending the ramrod again
                 */
                p_ptt = qed_ptt_acquire(p_hwfn);
                if (!p_ptt) {
                        rc = -EBUSY;
                        DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
                                   "Failed to acquire PTT\n");
                        return rc;
                }

                rc = qed_mcp_drain(p_hwfn, p_ptt);
                if (rc) {
                        qed_ptt_release(p_hwfn, p_ptt);
                        DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
                                   "Drain failed\n");
                        return rc;
                }

                qed_ptt_release(p_hwfn, p_ptt);

                /* Resend the ramrod */
                rc = qed_sp_init_request(p_hwfn, &p_ent,
                                         RDMA_RAMROD_DEREGISTER_MR,
                                         p_hwfn->p_rdma_info->proto,
                                         &init_data);
                if (rc) {
                        DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
                                   "Failed to init sp-element\n");
                        return rc;
                }

                rc = qed_spq_post(p_hwfn, p_ent, &fw_return_code);
                if (rc) {
                        DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
                                   "Ramrod failed\n");
                        return rc;
                }

                if (fw_return_code != RDMA_RETURN_OK) {
                        DP_NOTICE(p_hwfn, "fw_return_code = %d\n",
                                  fw_return_code);
                        return rc;
                }
        }

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "De-registered TID, rc = %d\n", rc);
        return rc;
}

static void *qed_rdma_get_rdma_ctx(struct qed_dev *cdev)
{
        return QED_LEADING_HWFN(cdev);
}

static int qed_rdma_modify_srq(void *rdma_cxt,
                               struct qed_rdma_modify_srq_in_params *in_params)
{
        struct rdma_srq_modify_ramrod_data *p_ramrod;
        struct qed_sp_init_data init_data = {};
        struct qed_hwfn *p_hwfn = rdma_cxt;
        struct qed_spq_entry *p_ent;
        u16 opaque_fid;
        int rc;

        init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
        init_data.comp_mode = QED_SPQ_MODE_EBLOCK;

        rc = qed_sp_init_request(p_hwfn, &p_ent,
                                 RDMA_RAMROD_MODIFY_SRQ,
                                 p_hwfn->p_rdma_info->proto, &init_data);
        if (rc)
                return rc;

        p_ramrod = &p_ent->ramrod.rdma_modify_srq;
        p_ramrod->srq_id.srq_idx = cpu_to_le16(in_params->srq_id);
        opaque_fid = p_hwfn->hw_info.opaque_fid;
        p_ramrod->srq_id.opaque_fid = cpu_to_le16(opaque_fid);
        p_ramrod->wqe_limit = cpu_to_le32(in_params->wqe_limit);

        rc = qed_spq_post(p_hwfn, p_ent, NULL);
        if (rc)
                return rc;

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "modified SRQ id = %x",
                   in_params->srq_id);

        return rc;
}

static int
qed_rdma_destroy_srq(void *rdma_cxt,
                     struct qed_rdma_destroy_srq_in_params *in_params)
{
        struct rdma_srq_destroy_ramrod_data *p_ramrod;
        struct qed_sp_init_data init_data = {};
        struct qed_hwfn *p_hwfn = rdma_cxt;
        struct qed_spq_entry *p_ent;
        struct qed_bmap *bmap;
        u16 opaque_fid;
        int rc;

        opaque_fid = p_hwfn->hw_info.opaque_fid;

        init_data.opaque_fid = opaque_fid;
        init_data.comp_mode = QED_SPQ_MODE_EBLOCK;

        rc = qed_sp_init_request(p_hwfn, &p_ent,
                                 RDMA_RAMROD_DESTROY_SRQ,
                                 p_hwfn->p_rdma_info->proto, &init_data);
        if (rc)
                return rc;

        p_ramrod = &p_ent->ramrod.rdma_destroy_srq;
        p_ramrod->srq_id.srq_idx = cpu_to_le16(in_params->srq_id);
        p_ramrod->srq_id.opaque_fid = cpu_to_le16(opaque_fid);

        rc = qed_spq_post(p_hwfn, p_ent, NULL);
        if (rc)
                return rc;

        bmap = &p_hwfn->p_rdma_info->srq_map;

        spin_lock_bh(&p_hwfn->p_rdma_info->lock);
        qed_bmap_release_id(p_hwfn, bmap, in_params->srq_id);
        spin_unlock_bh(&p_hwfn->p_rdma_info->lock);

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "SRQ destroyed Id = %x",
                   in_params->srq_id);

        return rc;
}

static int
qed_rdma_create_srq(void *rdma_cxt,
                    struct qed_rdma_create_srq_in_params *in_params,
                    struct qed_rdma_create_srq_out_params *out_params)
{
        struct rdma_srq_create_ramrod_data *p_ramrod;
        struct qed_sp_init_data init_data = {};
        struct qed_hwfn *p_hwfn = rdma_cxt;
        enum qed_cxt_elem_type elem_type;
        struct qed_spq_entry *p_ent;
        u16 opaque_fid, srq_id;
        struct qed_bmap *bmap;
        u32 returned_id;
        int rc;

        bmap = &p_hwfn->p_rdma_info->srq_map;
        spin_lock_bh(&p_hwfn->p_rdma_info->lock);
        rc = qed_rdma_bmap_alloc_id(p_hwfn, bmap, &returned_id);
        spin_unlock_bh(&p_hwfn->p_rdma_info->lock);

        if (rc) {
                DP_NOTICE(p_hwfn, "failed to allocate srq id\n");
                return rc;
        }

        elem_type = QED_ELEM_SRQ;
        rc = qed_cxt_dynamic_ilt_alloc(p_hwfn, elem_type, returned_id);
        if (rc)
                goto err;
        /* returned id is no greater than u16 */
        srq_id = (u16)returned_id;
        opaque_fid = p_hwfn->hw_info.opaque_fid;

        opaque_fid = p_hwfn->hw_info.opaque_fid;
        init_data.opaque_fid = opaque_fid;
        init_data.comp_mode = QED_SPQ_MODE_EBLOCK;

        rc = qed_sp_init_request(p_hwfn, &p_ent,
                                 RDMA_RAMROD_CREATE_SRQ,
                                 p_hwfn->p_rdma_info->proto, &init_data);
        if (rc)
                goto err;

        p_ramrod = &p_ent->ramrod.rdma_create_srq;
        DMA_REGPAIR_LE(p_ramrod->pbl_base_addr, in_params->pbl_base_addr);
        p_ramrod->pages_in_srq_pbl = cpu_to_le16(in_params->num_pages);
        p_ramrod->pd_id = cpu_to_le16(in_params->pd_id);
        p_ramrod->srq_id.srq_idx = cpu_to_le16(srq_id);
        p_ramrod->srq_id.opaque_fid = cpu_to_le16(opaque_fid);
        p_ramrod->page_size = cpu_to_le16(in_params->page_size);
        DMA_REGPAIR_LE(p_ramrod->producers_addr, in_params->prod_pair_addr);

        rc = qed_spq_post(p_hwfn, p_ent, NULL);
        if (rc)
                goto err;

        out_params->srq_id = srq_id;

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
                   "SRQ created Id = %x\n", out_params->srq_id);

        return rc;

err:
        spin_lock_bh(&p_hwfn->p_rdma_info->lock);
        qed_bmap_release_id(p_hwfn, bmap, returned_id);
        spin_unlock_bh(&p_hwfn->p_rdma_info->lock);

        return rc;
}

bool qed_rdma_allocated_qps(struct qed_hwfn *p_hwfn)
{
        bool result;

        /* if rdma info has not been allocated, naturally there are no qps */
        if (!p_hwfn->p_rdma_info)
                return false;

        spin_lock_bh(&p_hwfn->p_rdma_info->lock);
        if (!p_hwfn->p_rdma_info->cid_map.bitmap)
                result = false;
        else
                result = !qed_bmap_is_empty(&p_hwfn->p_rdma_info->cid_map);
        spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
        return result;
}

void qed_rdma_dpm_conf(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
{
        u32 val;

        val = (p_hwfn->dcbx_no_edpm || p_hwfn->db_bar_no_edpm) ? 0 : 1;

        qed_wr(p_hwfn, p_ptt, DORQ_REG_PF_DPM_ENABLE, val);
        DP_VERBOSE(p_hwfn, (QED_MSG_DCB | QED_MSG_RDMA),
                   "Changing DPM_EN state to %d (DCBX=%d, DB_BAR=%d)\n",
                   val, p_hwfn->dcbx_no_edpm, p_hwfn->db_bar_no_edpm);
}


void qed_rdma_dpm_bar(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
{
        p_hwfn->db_bar_no_edpm = true;

        qed_rdma_dpm_conf(p_hwfn, p_ptt);
}

static int qed_rdma_start(void *rdma_cxt,
                          struct qed_rdma_start_in_params *params)
{
        struct qed_hwfn *p_hwfn = (struct qed_hwfn *)rdma_cxt;
        struct qed_ptt *p_ptt;
        int rc = -EBUSY;

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
                   "desired_cnq = %08x\n", params->desired_cnq);

        p_ptt = qed_ptt_acquire(p_hwfn);
        if (!p_ptt)
                goto err;

        rc = qed_rdma_alloc(p_hwfn, p_ptt, params);
        if (rc)
                goto err1;

        rc = qed_rdma_setup(p_hwfn, p_ptt, params);
        if (rc)
                goto err2;

        qed_ptt_release(p_hwfn, p_ptt);

        return rc;

err2:
        qed_rdma_free(p_hwfn);
err1:
        qed_ptt_release(p_hwfn, p_ptt);
err:
        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "RDMA start - error, rc = %d\n", rc);
        return rc;
}

static int qed_rdma_init(struct qed_dev *cdev,
                         struct qed_rdma_start_in_params *params)
{
        return qed_rdma_start(QED_LEADING_HWFN(cdev), params);
}

static void qed_rdma_remove_user(void *rdma_cxt, u16 dpi)
{
        struct qed_hwfn *p_hwfn = (struct qed_hwfn *)rdma_cxt;

        DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "dpi = %08x\n", dpi);

        spin_lock_bh(&p_hwfn->p_rdma_info->lock);
        qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->dpi_map, dpi);
        spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
}

static int qed_roce_ll2_set_mac_filter(struct qed_dev *cdev,
                                       u8 *old_mac_address,
                                       u8 *new_mac_address)
{
        struct qed_hwfn *p_hwfn = QED_LEADING_HWFN(cdev);
        struct qed_ptt *p_ptt;
        int rc = 0;

        p_ptt = qed_ptt_acquire(p_hwfn);
        if (!p_ptt) {
                DP_ERR(cdev,
                       "qed roce ll2 mac filter set: failed to acquire PTT\n");
                return -EINVAL;
        }

        if (old_mac_address)
                qed_llh_remove_mac_filter(p_hwfn, p_ptt, old_mac_address);
        if (new_mac_address)
                rc = qed_llh_add_mac_filter(p_hwfn, p_ptt, new_mac_address);

        qed_ptt_release(p_hwfn, p_ptt);

        if (rc)
                DP_ERR(cdev,
                       "qed roce ll2 mac filter set: failed to add MAC filter\n");

        return rc;
}

static const struct qed_rdma_ops qed_rdma_ops_pass = {
        .common = &qed_common_ops_pass,
        .fill_dev_info = &qed_fill_rdma_dev_info,
        .rdma_get_rdma_ctx = &qed_rdma_get_rdma_ctx,
        .rdma_init = &qed_rdma_init,
        .rdma_add_user = &qed_rdma_add_user,
        .rdma_remove_user = &qed_rdma_remove_user,
        .rdma_stop = &qed_rdma_stop,
        .rdma_query_port = &qed_rdma_query_port,
        .rdma_query_device = &qed_rdma_query_device,
        .rdma_get_start_sb = &qed_rdma_get_sb_start,
        .rdma_get_rdma_int = &qed_rdma_get_int,
        .rdma_set_rdma_int = &qed_rdma_set_int,
        .rdma_get_min_cnq_msix = &qed_rdma_get_min_cnq_msix,
        .rdma_cnq_prod_update = &qed_rdma_cnq_prod_update,
        .rdma_alloc_pd = &qed_rdma_alloc_pd,
        .rdma_dealloc_pd = &qed_rdma_free_pd,
        .rdma_create_cq = &qed_rdma_create_cq,
        .rdma_destroy_cq = &qed_rdma_destroy_cq,
        .rdma_create_qp = &qed_rdma_create_qp,
        .rdma_modify_qp = &qed_rdma_modify_qp,
        .rdma_query_qp = &qed_rdma_query_qp,
        .rdma_destroy_qp = &qed_rdma_destroy_qp,
        .rdma_alloc_tid = &qed_rdma_alloc_tid,
        .rdma_free_tid = &qed_rdma_free_tid,
        .rdma_register_tid = &qed_rdma_register_tid,
        .rdma_deregister_tid = &qed_rdma_deregister_tid,
        .rdma_create_srq = &qed_rdma_create_srq,
        .rdma_modify_srq = &qed_rdma_modify_srq,
        .rdma_destroy_srq = &qed_rdma_destroy_srq,
        .ll2_acquire_connection = &qed_ll2_acquire_connection,
        .ll2_establish_connection = &qed_ll2_establish_connection,
        .ll2_terminate_connection = &qed_ll2_terminate_connection,
        .ll2_release_connection = &qed_ll2_release_connection,
        .ll2_post_rx_buffer = &qed_ll2_post_rx_buffer,
        .ll2_prepare_tx_packet = &qed_ll2_prepare_tx_packet,
        .ll2_set_fragment_of_tx_packet = &qed_ll2_set_fragment_of_tx_packet,
        .ll2_set_mac_filter = &qed_roce_ll2_set_mac_filter,
        .ll2_get_stats = &qed_ll2_get_stats,
        .iwarp_connect = &qed_iwarp_connect,
        .iwarp_create_listen = &qed_iwarp_create_listen,
        .iwarp_destroy_listen = &qed_iwarp_destroy_listen,
        .iwarp_accept = &qed_iwarp_accept,
        .iwarp_reject = &qed_iwarp_reject,
        .iwarp_send_rtr = &qed_iwarp_send_rtr,
};

const struct qed_rdma_ops *qed_get_rdma_ops(void)
{
        return &qed_rdma_ops_pass;
}
EXPORT_SYMBOL(qed_get_rdma_ops);