diff options
Diffstat (limited to 'drivers/net/ethernet/qlogic/qed/qed_roce.c')
| -rw-r--r-- | drivers/net/ethernet/qlogic/qed/qed_roce.c | 1143 |
1 files changed, 1143 insertions, 0 deletions
diff --git a/drivers/net/ethernet/qlogic/qed/qed_roce.c b/drivers/net/ethernet/qlogic/qed/qed_roce.c new file mode 100644 index 0000000000..134ecfca96 --- /dev/null +++ b/drivers/net/ethernet/qlogic/qed/qed_roce.c @@ -0,0 +1,1143 @@ +// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) +/* QLogic qed NIC Driver + * Copyright (c) 2015-2017 QLogic Corporation + * Copyright (c) 2019-2020 Marvell International Ltd. + */ + +#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 <linux/if_vlan.h> +#include "qed.h" +#include "qed_cxt.h" +#include "qed_dcbx.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" + +static void qed_roce_free_real_icid(struct qed_hwfn *p_hwfn, u16 icid); + +static int qed_roce_async_event(struct qed_hwfn *p_hwfn, u8 fw_event_code, + __le16 echo, union event_ring_data *data, + u8 fw_return_code) +{ + struct qed_rdma_events events = p_hwfn->p_rdma_info->events; + union rdma_eqe_data *rdata = &data->rdma_data; + + if (fw_event_code == ROCE_ASYNC_EVENT_DESTROY_QP_DONE) { + u16 icid = (u16)le32_to_cpu(rdata->rdma_destroy_qp_data.cid); + + /* icid release in this async event can occur only if the icid + * was offloaded to the FW. In case it wasn't offloaded this is + * handled in qed_roce_sp_destroy_qp. + */ + qed_roce_free_real_icid(p_hwfn, icid); + } else if (fw_event_code == ROCE_ASYNC_EVENT_SRQ_EMPTY || + fw_event_code == ROCE_ASYNC_EVENT_SRQ_LIMIT) { + u16 srq_id = (u16)le32_to_cpu(rdata->async_handle.lo); + + events.affiliated_event(events.context, fw_event_code, + &srq_id); + } else { + events.affiliated_event(events.context, fw_event_code, + (void *)&rdata->async_handle); + } + + return 0; +} + +void qed_roce_stop(struct qed_hwfn *p_hwfn) +{ + struct qed_bmap *rcid_map = &p_hwfn->p_rdma_info->real_cid_map; + int wait_count = 0; + + /* when destroying a_RoCE QP the control is returned to the user after + * the synchronous part. The asynchronous part may take a little longer. + * We delay for a short while if an async destroy QP is still expected. + * Beyond the added delay we clear the bitmap anyway. + */ + while (!bitmap_empty(rcid_map->bitmap, rcid_map->max_count)) { + /* If the HW device is during recovery, all resources are + * immediately reset without receiving a per-cid indication + * from HW. In this case we don't expect the cid bitmap to be + * cleared. + */ + if (p_hwfn->cdev->recov_in_prog) + return; + + msleep(100); + if (wait_count++ > 20) { + DP_NOTICE(p_hwfn, "cid bitmap wait timed out\n"); + break; + } + } +} + +static void qed_rdma_copy_gids(struct qed_rdma_qp *qp, __le32 *src_gid, + __le32 *dst_gid) +{ + u32 i; + + if (qp->roce_mode == ROCE_V2_IPV4) { + /* The IPv4 addresses shall be aligned to the highest word. + * The lower words must be zero. + */ + memset(src_gid, 0, sizeof(union qed_gid)); + memset(dst_gid, 0, sizeof(union qed_gid)); + src_gid[3] = cpu_to_le32(qp->sgid.ipv4_addr); + dst_gid[3] = cpu_to_le32(qp->dgid.ipv4_addr); + } else { + /* GIDs and IPv6 addresses coincide in location and size */ + for (i = 0; i < ARRAY_SIZE(qp->sgid.dwords); i++) { + src_gid[i] = cpu_to_le32(qp->sgid.dwords[i]); + dst_gid[i] = cpu_to_le32(qp->dgid.dwords[i]); + } + } +} + +static enum roce_flavor qed_roce_mode_to_flavor(enum roce_mode roce_mode) +{ + switch (roce_mode) { + case ROCE_V1: + return PLAIN_ROCE; + case ROCE_V2_IPV4: + return RROCE_IPV4; + case ROCE_V2_IPV6: + return RROCE_IPV6; + default: + return MAX_ROCE_FLAVOR; + } +} + +static void qed_roce_free_cid_pair(struct qed_hwfn *p_hwfn, u16 cid) +{ + spin_lock_bh(&p_hwfn->p_rdma_info->lock); + qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, cid); + qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, cid + 1); + spin_unlock_bh(&p_hwfn->p_rdma_info->lock); +} + +int qed_roce_alloc_cid(struct qed_hwfn *p_hwfn, u16 *cid) +{ + struct qed_rdma_info *p_rdma_info = p_hwfn->p_rdma_info; + u32 responder_icid; + u32 requester_icid; + int rc; + + spin_lock_bh(&p_hwfn->p_rdma_info->lock); + rc = qed_rdma_bmap_alloc_id(p_hwfn, &p_rdma_info->cid_map, + &responder_icid); + if (rc) { + spin_unlock_bh(&p_rdma_info->lock); + return rc; + } + + rc = qed_rdma_bmap_alloc_id(p_hwfn, &p_rdma_info->cid_map, + &requester_icid); + + spin_unlock_bh(&p_rdma_info->lock); + if (rc) + goto err; + + /* the two icid's should be adjacent */ + if ((requester_icid - responder_icid) != 1) { + DP_NOTICE(p_hwfn, "Failed to allocate two adjacent qp's'\n"); + rc = -EINVAL; + goto err; + } + + responder_icid += qed_cxt_get_proto_cid_start(p_hwfn, + p_rdma_info->proto); + requester_icid += qed_cxt_get_proto_cid_start(p_hwfn, + p_rdma_info->proto); + + /* If these icids require a new ILT line allocate DMA-able context for + * an ILT page + */ + rc = qed_cxt_dynamic_ilt_alloc(p_hwfn, QED_ELEM_CXT, responder_icid); + if (rc) + goto err; + + rc = qed_cxt_dynamic_ilt_alloc(p_hwfn, QED_ELEM_CXT, requester_icid); + if (rc) + goto err; + + *cid = (u16)responder_icid; + return rc; + +err: + spin_lock_bh(&p_rdma_info->lock); + qed_bmap_release_id(p_hwfn, &p_rdma_info->cid_map, responder_icid); + qed_bmap_release_id(p_hwfn, &p_rdma_info->cid_map, requester_icid); + + spin_unlock_bh(&p_rdma_info->lock); + DP_VERBOSE(p_hwfn, QED_MSG_RDMA, + "Allocate CID - failed, rc = %d\n", rc); + return rc; +} + +static void qed_roce_set_real_cid(struct qed_hwfn *p_hwfn, u32 cid) +{ + spin_lock_bh(&p_hwfn->p_rdma_info->lock); + qed_bmap_set_id(p_hwfn, &p_hwfn->p_rdma_info->real_cid_map, cid); + spin_unlock_bh(&p_hwfn->p_rdma_info->lock); +} + +static u8 qed_roce_get_qp_tc(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp) +{ + u8 pri, tc = 0; + + if (qp->vlan_id) { + pri = (qp->vlan_id & VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT; + tc = qed_dcbx_get_priority_tc(p_hwfn, pri); + } + + DP_VERBOSE(p_hwfn, QED_MSG_SP, + "qp icid %u tc: %u (vlan priority %s)\n", + qp->icid, tc, qp->vlan_id ? "enabled" : "disabled"); + + return tc; +} + +static int qed_roce_sp_create_responder(struct qed_hwfn *p_hwfn, + struct qed_rdma_qp *qp) +{ + struct roce_create_qp_resp_ramrod_data *p_ramrod; + u16 regular_latency_queue, low_latency_queue; + struct qed_sp_init_data init_data; + struct qed_spq_entry *p_ent; + enum protocol_type proto; + u32 flags = 0; + int rc; + u8 tc; + + if (!qp->has_resp) + return 0; + + DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "icid = %08x\n", qp->icid); + + /* Allocate DMA-able memory for IRQ */ + qp->irq_num_pages = 1; + qp->irq = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, + RDMA_RING_PAGE_SIZE, + &qp->irq_phys_addr, GFP_KERNEL); + if (!qp->irq) { + rc = -ENOMEM; + DP_NOTICE(p_hwfn, + "qed create responder failed: cannot allocate memory (irq). rc = %d\n", + rc); + return rc; + } + + /* Get SPQ entry */ + memset(&init_data, 0, sizeof(init_data)); + init_data.cid = qp->icid; + 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, ROCE_RAMROD_CREATE_QP, + PROTOCOLID_ROCE, &init_data); + if (rc) + goto err; + + SET_FIELD(flags, ROCE_CREATE_QP_RESP_RAMROD_DATA_ROCE_FLAVOR, + qed_roce_mode_to_flavor(qp->roce_mode)); + + SET_FIELD(flags, ROCE_CREATE_QP_RESP_RAMROD_DATA_RDMA_RD_EN, + qp->incoming_rdma_read_en); + + SET_FIELD(flags, ROCE_CREATE_QP_RESP_RAMROD_DATA_RDMA_WR_EN, + qp->incoming_rdma_write_en); + + SET_FIELD(flags, ROCE_CREATE_QP_RESP_RAMROD_DATA_ATOMIC_EN, + qp->incoming_atomic_en); + + SET_FIELD(flags, ROCE_CREATE_QP_RESP_RAMROD_DATA_E2E_FLOW_CONTROL_EN, + qp->e2e_flow_control_en); + + SET_FIELD(flags, ROCE_CREATE_QP_RESP_RAMROD_DATA_SRQ_FLG, qp->use_srq); + + SET_FIELD(flags, ROCE_CREATE_QP_RESP_RAMROD_DATA_RESERVED_KEY_EN, + qp->fmr_and_reserved_lkey); + + SET_FIELD(flags, ROCE_CREATE_QP_RESP_RAMROD_DATA_MIN_RNR_NAK_TIMER, + qp->min_rnr_nak_timer); + + SET_FIELD(flags, ROCE_CREATE_QP_RESP_RAMROD_DATA_XRC_FLAG, + qed_rdma_is_xrc_qp(qp)); + + p_ramrod = &p_ent->ramrod.roce_create_qp_resp; + p_ramrod->flags = cpu_to_le32(flags); + p_ramrod->max_ird = qp->max_rd_atomic_resp; + p_ramrod->traffic_class = qp->traffic_class_tos; + p_ramrod->hop_limit = qp->hop_limit_ttl; + p_ramrod->irq_num_pages = qp->irq_num_pages; + p_ramrod->p_key = cpu_to_le16(qp->pkey); + p_ramrod->flow_label = cpu_to_le32(qp->flow_label); + p_ramrod->dst_qp_id = cpu_to_le32(qp->dest_qp); + p_ramrod->mtu = cpu_to_le16(qp->mtu); + p_ramrod->initial_psn = cpu_to_le32(qp->rq_psn); + p_ramrod->pd = cpu_to_le16(qp->pd); + p_ramrod->rq_num_pages = cpu_to_le16(qp->rq_num_pages); + DMA_REGPAIR_LE(p_ramrod->rq_pbl_addr, qp->rq_pbl_ptr); + DMA_REGPAIR_LE(p_ramrod->irq_pbl_addr, qp->irq_phys_addr); + qed_rdma_copy_gids(qp, p_ramrod->src_gid, p_ramrod->dst_gid); + p_ramrod->qp_handle_for_async.hi = qp->qp_handle_async.hi; + p_ramrod->qp_handle_for_async.lo = qp->qp_handle_async.lo; + p_ramrod->qp_handle_for_cqe.hi = qp->qp_handle.hi; + p_ramrod->qp_handle_for_cqe.lo = qp->qp_handle.lo; + p_ramrod->cq_cid = cpu_to_le32((p_hwfn->hw_info.opaque_fid << 16) | + qp->rq_cq_id); + p_ramrod->xrc_domain = cpu_to_le16(qp->xrcd_id); + + tc = qed_roce_get_qp_tc(p_hwfn, qp); + regular_latency_queue = qed_get_cm_pq_idx_ofld_mtc(p_hwfn, tc); + low_latency_queue = qed_get_cm_pq_idx_llt_mtc(p_hwfn, tc); + DP_VERBOSE(p_hwfn, QED_MSG_SP, + "qp icid %u pqs: regular_latency %u low_latency %u\n", + qp->icid, regular_latency_queue - CM_TX_PQ_BASE, + low_latency_queue - CM_TX_PQ_BASE); + p_ramrod->regular_latency_phy_queue = + cpu_to_le16(regular_latency_queue); + p_ramrod->low_latency_phy_queue = + cpu_to_le16(low_latency_queue); + + p_ramrod->dpi = cpu_to_le16(qp->dpi); + + qed_rdma_set_fw_mac(p_ramrod->remote_mac_addr, qp->remote_mac_addr); + qed_rdma_set_fw_mac(p_ramrod->local_mac_addr, qp->local_mac_addr); + + p_ramrod->udp_src_port = cpu_to_le16(qp->udp_src_port); + p_ramrod->vlan_id = cpu_to_le16(qp->vlan_id); + p_ramrod->srq_id.srq_idx = cpu_to_le16(qp->srq_id); + p_ramrod->srq_id.opaque_fid = cpu_to_le16(p_hwfn->hw_info.opaque_fid); + + p_ramrod->stats_counter_id = RESC_START(p_hwfn, QED_RDMA_STATS_QUEUE) + + qp->stats_queue; + + rc = qed_spq_post(p_hwfn, p_ent, NULL); + if (rc) + goto err; + + qp->resp_offloaded = true; + qp->cq_prod = 0; + + proto = p_hwfn->p_rdma_info->proto; + qed_roce_set_real_cid(p_hwfn, qp->icid - + qed_cxt_get_proto_cid_start(p_hwfn, proto)); + + return rc; + +err: + DP_NOTICE(p_hwfn, "create responder - failed, rc = %d\n", rc); + dma_free_coherent(&p_hwfn->cdev->pdev->dev, + qp->irq_num_pages * RDMA_RING_PAGE_SIZE, + qp->irq, qp->irq_phys_addr); + + return rc; +} + +static int qed_roce_sp_create_requester(struct qed_hwfn *p_hwfn, + struct qed_rdma_qp *qp) +{ + struct roce_create_qp_req_ramrod_data *p_ramrod; + u16 regular_latency_queue, low_latency_queue; + struct qed_sp_init_data init_data; + struct qed_spq_entry *p_ent; + enum protocol_type proto; + u16 flags = 0; + int rc; + u8 tc; + + if (!qp->has_req) + return 0; + + DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "icid = %08x\n", qp->icid); + + /* Allocate DMA-able memory for ORQ */ + qp->orq_num_pages = 1; + qp->orq = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, + RDMA_RING_PAGE_SIZE, + &qp->orq_phys_addr, GFP_KERNEL); + if (!qp->orq) { + rc = -ENOMEM; + DP_NOTICE(p_hwfn, + "qed create requester failed: cannot allocate memory (orq). rc = %d\n", + rc); + return rc; + } + + /* Get SPQ entry */ + memset(&init_data, 0, sizeof(init_data)); + init_data.cid = qp->icid + 1; + 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, + ROCE_RAMROD_CREATE_QP, + PROTOCOLID_ROCE, &init_data); + if (rc) + goto err; + + SET_FIELD(flags, ROCE_CREATE_QP_REQ_RAMROD_DATA_ROCE_FLAVOR, + qed_roce_mode_to_flavor(qp->roce_mode)); + + SET_FIELD(flags, ROCE_CREATE_QP_REQ_RAMROD_DATA_FMR_AND_RESERVED_EN, + qp->fmr_and_reserved_lkey); + + SET_FIELD(flags, ROCE_CREATE_QP_REQ_RAMROD_DATA_SIGNALED_COMP, + qp->signal_all); + + SET_FIELD(flags, ROCE_CREATE_QP_REQ_RAMROD_DATA_ERR_RETRY_CNT, + qp->retry_cnt); + + SET_FIELD(flags, ROCE_CREATE_QP_REQ_RAMROD_DATA_RNR_NAK_CNT, + qp->rnr_retry_cnt); + + SET_FIELD(flags, ROCE_CREATE_QP_REQ_RAMROD_DATA_XRC_FLAG, + qed_rdma_is_xrc_qp(qp)); + + p_ramrod = &p_ent->ramrod.roce_create_qp_req; + p_ramrod->flags = cpu_to_le16(flags); + + SET_FIELD(p_ramrod->flags2, ROCE_CREATE_QP_REQ_RAMROD_DATA_EDPM_MODE, + qp->edpm_mode); + + p_ramrod->max_ord = qp->max_rd_atomic_req; + p_ramrod->traffic_class = qp->traffic_class_tos; + p_ramrod->hop_limit = qp->hop_limit_ttl; + p_ramrod->orq_num_pages = qp->orq_num_pages; + p_ramrod->p_key = cpu_to_le16(qp->pkey); + p_ramrod->flow_label = cpu_to_le32(qp->flow_label); + p_ramrod->dst_qp_id = cpu_to_le32(qp->dest_qp); + p_ramrod->ack_timeout_val = cpu_to_le32(qp->ack_timeout); + p_ramrod->mtu = cpu_to_le16(qp->mtu); + p_ramrod->initial_psn = cpu_to_le32(qp->sq_psn); + p_ramrod->pd = cpu_to_le16(qp->pd); + p_ramrod->sq_num_pages = cpu_to_le16(qp->sq_num_pages); + DMA_REGPAIR_LE(p_ramrod->sq_pbl_addr, qp->sq_pbl_ptr); + DMA_REGPAIR_LE(p_ramrod->orq_pbl_addr, qp->orq_phys_addr); + qed_rdma_copy_gids(qp, p_ramrod->src_gid, p_ramrod->dst_gid); + p_ramrod->qp_handle_for_async.hi = qp->qp_handle_async.hi; + p_ramrod->qp_handle_for_async.lo = qp->qp_handle_async.lo; + p_ramrod->qp_handle_for_cqe.hi = qp->qp_handle.hi; + p_ramrod->qp_handle_for_cqe.lo = qp->qp_handle.lo; + p_ramrod->cq_cid = + cpu_to_le32((p_hwfn->hw_info.opaque_fid << 16) | qp->sq_cq_id); + + tc = qed_roce_get_qp_tc(p_hwfn, qp); + regular_latency_queue = qed_get_cm_pq_idx_ofld_mtc(p_hwfn, tc); + low_latency_queue = qed_get_cm_pq_idx_llt_mtc(p_hwfn, tc); + DP_VERBOSE(p_hwfn, QED_MSG_SP, + "qp icid %u pqs: regular_latency %u low_latency %u\n", + qp->icid, regular_latency_queue - CM_TX_PQ_BASE, + low_latency_queue - CM_TX_PQ_BASE); + p_ramrod->regular_latency_phy_queue = + cpu_to_le16(regular_latency_queue); + p_ramrod->low_latency_phy_queue = + cpu_to_le16(low_latency_queue); + + p_ramrod->dpi = cpu_to_le16(qp->dpi); + + qed_rdma_set_fw_mac(p_ramrod->remote_mac_addr, qp->remote_mac_addr); + qed_rdma_set_fw_mac(p_ramrod->local_mac_addr, qp->local_mac_addr); + + p_ramrod->udp_src_port = cpu_to_le16(qp->udp_src_port); + p_ramrod->vlan_id = cpu_to_le16(qp->vlan_id); + p_ramrod->stats_counter_id = RESC_START(p_hwfn, QED_RDMA_STATS_QUEUE) + + qp->stats_queue; + + rc = qed_spq_post(p_hwfn, p_ent, NULL); + if (rc) + goto err; + + qp->req_offloaded = true; + proto = p_hwfn->p_rdma_info->proto; + qed_roce_set_real_cid(p_hwfn, + qp->icid + 1 - + qed_cxt_get_proto_cid_start(p_hwfn, proto)); + + return rc; + +err: + DP_NOTICE(p_hwfn, "Create requested - failed, rc = %d\n", rc); + dma_free_coherent(&p_hwfn->cdev->pdev->dev, + qp->orq_num_pages * RDMA_RING_PAGE_SIZE, + qp->orq, qp->orq_phys_addr); + return rc; +} + +static int qed_roce_sp_modify_responder(struct qed_hwfn *p_hwfn, + struct qed_rdma_qp *qp, + bool move_to_err, u32 modify_flags) +{ + struct roce_modify_qp_resp_ramrod_data *p_ramrod; + struct qed_sp_init_data init_data; + struct qed_spq_entry *p_ent; + u16 flags = 0; + int rc; + + if (!qp->has_resp) + return 0; + + DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "icid = %08x\n", qp->icid); + + if (move_to_err && !qp->resp_offloaded) + return 0; + + /* Get SPQ entry */ + memset(&init_data, 0, sizeof(init_data)); + init_data.cid = qp->icid; + 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, + ROCE_EVENT_MODIFY_QP, + PROTOCOLID_ROCE, &init_data); + if (rc) { + DP_NOTICE(p_hwfn, "rc = %d\n", rc); + return rc; + } + + SET_FIELD(flags, ROCE_MODIFY_QP_RESP_RAMROD_DATA_MOVE_TO_ERR_FLG, + !!move_to_err); + + SET_FIELD(flags, ROCE_MODIFY_QP_RESP_RAMROD_DATA_RDMA_RD_EN, + qp->incoming_rdma_read_en); + + SET_FIELD(flags, ROCE_MODIFY_QP_RESP_RAMROD_DATA_RDMA_WR_EN, + qp->incoming_rdma_write_en); + + SET_FIELD(flags, ROCE_MODIFY_QP_RESP_RAMROD_DATA_ATOMIC_EN, + qp->incoming_atomic_en); + + SET_FIELD(flags, ROCE_CREATE_QP_RESP_RAMROD_DATA_E2E_FLOW_CONTROL_EN, + qp->e2e_flow_control_en); + + SET_FIELD(flags, ROCE_MODIFY_QP_RESP_RAMROD_DATA_RDMA_OPS_EN_FLG, + GET_FIELD(modify_flags, + QED_RDMA_MODIFY_QP_VALID_RDMA_OPS_EN)); + + SET_FIELD(flags, ROCE_MODIFY_QP_RESP_RAMROD_DATA_P_KEY_FLG, + GET_FIELD(modify_flags, QED_ROCE_MODIFY_QP_VALID_PKEY)); + + SET_FIELD(flags, ROCE_MODIFY_QP_RESP_RAMROD_DATA_ADDRESS_VECTOR_FLG, + GET_FIELD(modify_flags, + QED_ROCE_MODIFY_QP_VALID_ADDRESS_VECTOR)); + + SET_FIELD(flags, ROCE_MODIFY_QP_RESP_RAMROD_DATA_MAX_IRD_FLG, + GET_FIELD(modify_flags, + QED_RDMA_MODIFY_QP_VALID_MAX_RD_ATOMIC_RESP)); + + SET_FIELD(flags, ROCE_MODIFY_QP_RESP_RAMROD_DATA_MIN_RNR_NAK_TIMER_FLG, + GET_FIELD(modify_flags, + QED_ROCE_MODIFY_QP_VALID_MIN_RNR_NAK_TIMER)); + + p_ramrod = &p_ent->ramrod.roce_modify_qp_resp; + p_ramrod->flags = cpu_to_le16(flags); + + p_ramrod->fields = 0; + SET_FIELD(p_ramrod->fields, + ROCE_MODIFY_QP_RESP_RAMROD_DATA_MIN_RNR_NAK_TIMER, + qp->min_rnr_nak_timer); + + p_ramrod->max_ird = qp->max_rd_atomic_resp; + p_ramrod->traffic_class = qp->traffic_class_tos; + p_ramrod->hop_limit = qp->hop_limit_ttl; + p_ramrod->p_key = cpu_to_le16(qp->pkey); + p_ramrod->flow_label = cpu_to_le32(qp->flow_label); + p_ramrod->mtu = cpu_to_le16(qp->mtu); + qed_rdma_copy_gids(qp, p_ramrod->src_gid, p_ramrod->dst_gid); + rc = qed_spq_post(p_hwfn, p_ent, NULL); + + DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Modify responder, rc = %d\n", rc); + return rc; +} + +static int qed_roce_sp_modify_requester(struct qed_hwfn *p_hwfn, + struct qed_rdma_qp *qp, + bool move_to_sqd, + bool move_to_err, u32 modify_flags) +{ + struct roce_modify_qp_req_ramrod_data *p_ramrod; + struct qed_sp_init_data init_data; + struct qed_spq_entry *p_ent; + u16 flags = 0; + int rc; + + if (!qp->has_req) + return 0; + + DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "icid = %08x\n", qp->icid); + + if (move_to_err && !(qp->req_offloaded)) + return 0; + + /* Get SPQ entry */ + memset(&init_data, 0, sizeof(init_data)); + init_data.cid = qp->icid + 1; + 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, + ROCE_EVENT_MODIFY_QP, + PROTOCOLID_ROCE, &init_data); + if (rc) { + DP_NOTICE(p_hwfn, "rc = %d\n", rc); + return rc; + } + + SET_FIELD(flags, ROCE_MODIFY_QP_REQ_RAMROD_DATA_MOVE_TO_ERR_FLG, + !!move_to_err); + + SET_FIELD(flags, ROCE_MODIFY_QP_REQ_RAMROD_DATA_MOVE_TO_SQD_FLG, + !!move_to_sqd); + + SET_FIELD(flags, ROCE_MODIFY_QP_REQ_RAMROD_DATA_EN_SQD_ASYNC_NOTIFY, + qp->sqd_async); + + SET_FIELD(flags, ROCE_MODIFY_QP_REQ_RAMROD_DATA_P_KEY_FLG, + GET_FIELD(modify_flags, QED_ROCE_MODIFY_QP_VALID_PKEY)); + + SET_FIELD(flags, ROCE_MODIFY_QP_REQ_RAMROD_DATA_ADDRESS_VECTOR_FLG, + GET_FIELD(modify_flags, + QED_ROCE_MODIFY_QP_VALID_ADDRESS_VECTOR)); + + SET_FIELD(flags, ROCE_MODIFY_QP_REQ_RAMROD_DATA_MAX_ORD_FLG, + GET_FIELD(modify_flags, + QED_RDMA_MODIFY_QP_VALID_MAX_RD_ATOMIC_REQ)); + + SET_FIELD(flags, ROCE_MODIFY_QP_REQ_RAMROD_DATA_RNR_NAK_CNT_FLG, + GET_FIELD(modify_flags, + QED_ROCE_MODIFY_QP_VALID_RNR_RETRY_CNT)); + + SET_FIELD(flags, ROCE_MODIFY_QP_REQ_RAMROD_DATA_ERR_RETRY_CNT_FLG, + GET_FIELD(modify_flags, QED_ROCE_MODIFY_QP_VALID_RETRY_CNT)); + + SET_FIELD(flags, ROCE_MODIFY_QP_REQ_RAMROD_DATA_ACK_TIMEOUT_FLG, + GET_FIELD(modify_flags, + QED_ROCE_MODIFY_QP_VALID_ACK_TIMEOUT)); + + p_ramrod = &p_ent->ramrod.roce_modify_qp_req; + p_ramrod->flags = cpu_to_le16(flags); + + p_ramrod->fields = 0; + SET_FIELD(p_ramrod->fields, + ROCE_MODIFY_QP_REQ_RAMROD_DATA_ERR_RETRY_CNT, qp->retry_cnt); + SET_FIELD(p_ramrod->fields, ROCE_MODIFY_QP_REQ_RAMROD_DATA_RNR_NAK_CNT, + qp->rnr_retry_cnt); + + p_ramrod->max_ord = qp->max_rd_atomic_req; + p_ramrod->traffic_class = qp->traffic_class_tos; + p_ramrod->hop_limit = qp->hop_limit_ttl; + p_ramrod->p_key = cpu_to_le16(qp->pkey); + p_ramrod->flow_label = cpu_to_le32(qp->flow_label); + p_ramrod->ack_timeout_val = cpu_to_le32(qp->ack_timeout); + p_ramrod->mtu = cpu_to_le16(qp->mtu); + qed_rdma_copy_gids(qp, p_ramrod->src_gid, p_ramrod->dst_gid); + rc = qed_spq_post(p_hwfn, p_ent, NULL); + + DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Modify requester, rc = %d\n", rc); + return rc; +} + +static int qed_roce_sp_destroy_qp_responder(struct qed_hwfn *p_hwfn, + struct qed_rdma_qp *qp, + u32 *cq_prod) +{ + struct roce_destroy_qp_resp_output_params *p_ramrod_res; + struct roce_destroy_qp_resp_ramrod_data *p_ramrod; + struct qed_sp_init_data init_data; + struct qed_spq_entry *p_ent; + dma_addr_t ramrod_res_phys; + int rc; + + if (!qp->has_resp) { + *cq_prod = 0; + return 0; + } + + DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "icid = %08x\n", qp->icid); + *cq_prod = qp->cq_prod; + + if (!qp->resp_offloaded) { + /* If a responder was never offload, we need to free the cids + * allocated in create_qp as a FW async event will never arrive + */ + u32 cid; + + cid = qp->icid - + qed_cxt_get_proto_cid_start(p_hwfn, + p_hwfn->p_rdma_info->proto); + qed_roce_free_cid_pair(p_hwfn, (u16)cid); + + return 0; + } + + /* Get SPQ entry */ + memset(&init_data, 0, sizeof(init_data)); + init_data.cid = qp->icid; + 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, + ROCE_RAMROD_DESTROY_QP, + PROTOCOLID_ROCE, &init_data); + if (rc) + return rc; + + p_ramrod = &p_ent->ramrod.roce_destroy_qp_resp; + + p_ramrod_res = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, + sizeof(*p_ramrod_res), + &ramrod_res_phys, GFP_KERNEL); + + if (!p_ramrod_res) { + rc = -ENOMEM; + DP_NOTICE(p_hwfn, + "qed destroy responder failed: cannot allocate memory (ramrod). rc = %d\n", + rc); + qed_sp_destroy_request(p_hwfn, p_ent); + return rc; + } + + DMA_REGPAIR_LE(p_ramrod->output_params_addr, ramrod_res_phys); + + rc = qed_spq_post(p_hwfn, p_ent, NULL); + if (rc) + goto err; + + *cq_prod = le32_to_cpu(p_ramrod_res->cq_prod); + qp->cq_prod = *cq_prod; + + /* Free IRQ - only if ramrod succeeded, in case FW is still using it */ + dma_free_coherent(&p_hwfn->cdev->pdev->dev, + qp->irq_num_pages * RDMA_RING_PAGE_SIZE, + qp->irq, qp->irq_phys_addr); + + qp->resp_offloaded = false; + + DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Destroy responder, rc = %d\n", rc); + +err: + dma_free_coherent(&p_hwfn->cdev->pdev->dev, + sizeof(struct roce_destroy_qp_resp_output_params), + p_ramrod_res, ramrod_res_phys); + + return rc; +} + +static int qed_roce_sp_destroy_qp_requester(struct qed_hwfn *p_hwfn, + struct qed_rdma_qp *qp) +{ + struct roce_destroy_qp_req_output_params *p_ramrod_res; + struct roce_destroy_qp_req_ramrod_data *p_ramrod; + struct qed_sp_init_data init_data; + struct qed_spq_entry *p_ent; + dma_addr_t ramrod_res_phys; + int rc = -ENOMEM; + + if (!qp->has_req) + return 0; + + DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "icid = %08x\n", qp->icid); + + if (!qp->req_offloaded) + return 0; + + p_ramrod_res = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, + sizeof(*p_ramrod_res), + &ramrod_res_phys, GFP_KERNEL); + if (!p_ramrod_res) { + DP_NOTICE(p_hwfn, + "qed destroy requester failed: cannot allocate memory (ramrod)\n"); + return rc; + } + + /* Get SPQ entry */ + memset(&init_data, 0, sizeof(init_data)); + init_data.cid = qp->icid + 1; + 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, ROCE_RAMROD_DESTROY_QP, + PROTOCOLID_ROCE, &init_data); + if (rc) + goto err; + + p_ramrod = &p_ent->ramrod.roce_destroy_qp_req; + DMA_REGPAIR_LE(p_ramrod->output_params_addr, ramrod_res_phys); + + rc = qed_spq_post(p_hwfn, p_ent, NULL); + if (rc) + goto err; + + /* Free ORQ - only if ramrod succeeded, in case FW is still using it */ + dma_free_coherent(&p_hwfn->cdev->pdev->dev, + qp->orq_num_pages * RDMA_RING_PAGE_SIZE, + qp->orq, qp->orq_phys_addr); + + qp->req_offloaded = false; + + DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Destroy requester, rc = %d\n", rc); + +err: + dma_free_coherent(&p_hwfn->cdev->pdev->dev, sizeof(*p_ramrod_res), + p_ramrod_res, ramrod_res_phys); + + return rc; +} + +int qed_roce_query_qp(struct qed_hwfn *p_hwfn, + struct qed_rdma_qp *qp, + struct qed_rdma_query_qp_out_params *out_params) +{ + struct roce_query_qp_resp_output_params *p_resp_ramrod_res; + struct roce_query_qp_req_output_params *p_req_ramrod_res; + struct roce_query_qp_resp_ramrod_data *p_resp_ramrod; + struct roce_query_qp_req_ramrod_data *p_req_ramrod; + struct qed_sp_init_data init_data; + dma_addr_t resp_ramrod_res_phys; + dma_addr_t req_ramrod_res_phys; + struct qed_spq_entry *p_ent; + bool rq_err_state; + bool sq_err_state; + bool sq_draining; + int rc = -ENOMEM; + + if ((!(qp->resp_offloaded)) && (!(qp->req_offloaded))) { + /* We can't send ramrod to the fw since this qp wasn't offloaded + * to the fw yet + */ + out_params->draining = false; + out_params->rq_psn = qp->rq_psn; + out_params->sq_psn = qp->sq_psn; + out_params->state = qp->cur_state; + + DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "No QPs as no offload\n"); + return 0; + } + + if (!(qp->resp_offloaded)) { + DP_NOTICE(p_hwfn, + "The responder's qp should be offloaded before requester's\n"); + return -EINVAL; + } + + /* Send a query responder ramrod to FW to get RQ-PSN and state */ + p_resp_ramrod_res = + dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, + sizeof(*p_resp_ramrod_res), + &resp_ramrod_res_phys, GFP_KERNEL); + if (!p_resp_ramrod_res) { + DP_NOTICE(p_hwfn, + "qed query qp failed: cannot allocate memory (ramrod)\n"); + return rc; + } + + /* Get SPQ entry */ + memset(&init_data, 0, sizeof(init_data)); + init_data.cid = qp->icid; + 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, ROCE_RAMROD_QUERY_QP, + PROTOCOLID_ROCE, &init_data); + if (rc) + goto err_resp; + + p_resp_ramrod = &p_ent->ramrod.roce_query_qp_resp; + DMA_REGPAIR_LE(p_resp_ramrod->output_params_addr, resp_ramrod_res_phys); + + rc = qed_spq_post(p_hwfn, p_ent, NULL); + if (rc) + goto err_resp; + + out_params->rq_psn = le32_to_cpu(p_resp_ramrod_res->psn); + rq_err_state = GET_FIELD(le32_to_cpu(p_resp_ramrod_res->flags), + ROCE_QUERY_QP_RESP_OUTPUT_PARAMS_ERROR_FLG); + + dma_free_coherent(&p_hwfn->cdev->pdev->dev, sizeof(*p_resp_ramrod_res), + p_resp_ramrod_res, resp_ramrod_res_phys); + + if (!(qp->req_offloaded)) { + /* Don't send query qp for the requester */ + out_params->sq_psn = qp->sq_psn; + out_params->draining = false; + + if (rq_err_state) + qp->cur_state = QED_ROCE_QP_STATE_ERR; + + out_params->state = qp->cur_state; + + return 0; + } + + /* Send a query requester ramrod to FW to get SQ-PSN and state */ + p_req_ramrod_res = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, + sizeof(*p_req_ramrod_res), + &req_ramrod_res_phys, + GFP_KERNEL); + if (!p_req_ramrod_res) { + rc = -ENOMEM; + DP_NOTICE(p_hwfn, + "qed query qp failed: cannot allocate memory (ramrod)\n"); + return rc; + } + + /* Get SPQ entry */ + init_data.cid = qp->icid + 1; + rc = qed_sp_init_request(p_hwfn, &p_ent, ROCE_RAMROD_QUERY_QP, + PROTOCOLID_ROCE, &init_data); + if (rc) + goto err_req; + + p_req_ramrod = &p_ent->ramrod.roce_query_qp_req; + DMA_REGPAIR_LE(p_req_ramrod->output_params_addr, req_ramrod_res_phys); + + rc = qed_spq_post(p_hwfn, p_ent, NULL); + if (rc) + goto err_req; + + out_params->sq_psn = le32_to_cpu(p_req_ramrod_res->psn); + sq_err_state = GET_FIELD(le32_to_cpu(p_req_ramrod_res->flags), + ROCE_QUERY_QP_REQ_OUTPUT_PARAMS_ERR_FLG); + sq_draining = + GET_FIELD(le32_to_cpu(p_req_ramrod_res->flags), + ROCE_QUERY_QP_REQ_OUTPUT_PARAMS_SQ_DRAINING_FLG); + + dma_free_coherent(&p_hwfn->cdev->pdev->dev, sizeof(*p_req_ramrod_res), + p_req_ramrod_res, req_ramrod_res_phys); + + out_params->draining = false; + + if (rq_err_state || sq_err_state) + qp->cur_state = QED_ROCE_QP_STATE_ERR; + else if (sq_draining) + out_params->draining = true; + out_params->state = qp->cur_state; + + return 0; + +err_req: + dma_free_coherent(&p_hwfn->cdev->pdev->dev, sizeof(*p_req_ramrod_res), + p_req_ramrod_res, req_ramrod_res_phys); + return rc; +err_resp: + dma_free_coherent(&p_hwfn->cdev->pdev->dev, sizeof(*p_resp_ramrod_res), + p_resp_ramrod_res, resp_ramrod_res_phys); + return rc; +} + +int qed_roce_destroy_qp(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp) +{ + u32 cq_prod; + int rc; + + /* Destroys the specified QP */ + if ((qp->cur_state != QED_ROCE_QP_STATE_RESET) && + (qp->cur_state != QED_ROCE_QP_STATE_ERR) && + (qp->cur_state != QED_ROCE_QP_STATE_INIT)) { + DP_NOTICE(p_hwfn, + "QP must be in error, reset or init state before destroying it\n"); + return -EINVAL; + } + + if (qp->cur_state != QED_ROCE_QP_STATE_RESET) { + rc = qed_roce_sp_destroy_qp_responder(p_hwfn, qp, + &cq_prod); + if (rc) + return rc; + + /* Send destroy requester ramrod */ + rc = qed_roce_sp_destroy_qp_requester(p_hwfn, qp); + if (rc) + return rc; + } + + return 0; +} + +int qed_roce_modify_qp(struct qed_hwfn *p_hwfn, + struct qed_rdma_qp *qp, + enum qed_roce_qp_state prev_state, + struct qed_rdma_modify_qp_in_params *params) +{ + int rc = 0; + + /* Perform additional operations according to the current state and the + * next state + */ + if (((prev_state == QED_ROCE_QP_STATE_INIT) || + (prev_state == QED_ROCE_QP_STATE_RESET)) && + (qp->cur_state == QED_ROCE_QP_STATE_RTR)) { + /* Init->RTR or Reset->RTR */ + rc = qed_roce_sp_create_responder(p_hwfn, qp); + return rc; + } else if ((prev_state == QED_ROCE_QP_STATE_RTR) && + (qp->cur_state == QED_ROCE_QP_STATE_RTS)) { + /* RTR-> RTS */ + rc = qed_roce_sp_create_requester(p_hwfn, qp); + if (rc) + return rc; + + /* Send modify responder ramrod */ + rc = qed_roce_sp_modify_responder(p_hwfn, qp, false, + params->modify_flags); + return rc; + } else if ((prev_state == QED_ROCE_QP_STATE_RTS) && + (qp->cur_state == QED_ROCE_QP_STATE_RTS)) { + /* RTS->RTS */ + rc = qed_roce_sp_modify_responder(p_hwfn, qp, false, + params->modify_flags); + if (rc) + return rc; + + rc = qed_roce_sp_modify_requester(p_hwfn, qp, false, false, + params->modify_flags); + return rc; + } else if ((prev_state == QED_ROCE_QP_STATE_RTS) && + (qp->cur_state == QED_ROCE_QP_STATE_SQD)) { + /* RTS->SQD */ + rc = qed_roce_sp_modify_requester(p_hwfn, qp, true, false, + params->modify_flags); + return rc; + } else if ((prev_state == QED_ROCE_QP_STATE_SQD) && + (qp->cur_state == QED_ROCE_QP_STATE_SQD)) { + /* SQD->SQD */ + rc = qed_roce_sp_modify_responder(p_hwfn, qp, false, + params->modify_flags); + if (rc) + return rc; + + rc = qed_roce_sp_modify_requester(p_hwfn, qp, false, false, + params->modify_flags); + return rc; + } else if ((prev_state == QED_ROCE_QP_STATE_SQD) && + (qp->cur_state == QED_ROCE_QP_STATE_RTS)) { + /* SQD->RTS */ + rc = qed_roce_sp_modify_responder(p_hwfn, qp, false, + params->modify_flags); + if (rc) + return rc; + + rc = qed_roce_sp_modify_requester(p_hwfn, qp, false, false, + params->modify_flags); + + return rc; + } else if (qp->cur_state == QED_ROCE_QP_STATE_ERR) { + /* ->ERR */ + rc = qed_roce_sp_modify_responder(p_hwfn, qp, true, + params->modify_flags); + if (rc) + return rc; + + rc = qed_roce_sp_modify_requester(p_hwfn, qp, false, true, + params->modify_flags); + return rc; + } else if (qp->cur_state == QED_ROCE_QP_STATE_RESET) { + /* Any state -> RESET */ + u32 cq_prod; + + /* Send destroy responder ramrod */ + rc = qed_roce_sp_destroy_qp_responder(p_hwfn, + qp, + &cq_prod); + + if (rc) + return rc; + + qp->cq_prod = cq_prod; + + rc = qed_roce_sp_destroy_qp_requester(p_hwfn, qp); + } else { + DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "0\n"); + } + + return rc; +} + +static void qed_roce_free_real_icid(struct qed_hwfn *p_hwfn, u16 icid) +{ + struct qed_rdma_info *p_rdma_info = p_hwfn->p_rdma_info; + u32 start_cid, cid, xcid; + + /* an even icid belongs to a responder while an odd icid belongs to a + * requester. The 'cid' received as an input can be either. We calculate + * the "partner" icid and call it xcid. Only if both are free then the + * "cid" map can be cleared. + */ + start_cid = qed_cxt_get_proto_cid_start(p_hwfn, p_rdma_info->proto); + cid = icid - start_cid; + xcid = cid ^ 1; + + spin_lock_bh(&p_rdma_info->lock); + + qed_bmap_release_id(p_hwfn, &p_rdma_info->real_cid_map, cid); + if (qed_bmap_test_id(p_hwfn, &p_rdma_info->real_cid_map, xcid) == 0) { + qed_bmap_release_id(p_hwfn, &p_rdma_info->cid_map, cid); + qed_bmap_release_id(p_hwfn, &p_rdma_info->cid_map, xcid); + } + + spin_unlock_bh(&p_hwfn->p_rdma_info->lock); +} + +void qed_roce_dpm_dcbx(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) +{ + u8 val; + + /* if any QPs are already active, we want to disable DPM, since their + * context information contains information from before the latest DCBx + * update. Otherwise enable it. + */ + val = qed_rdma_allocated_qps(p_hwfn) ? true : false; + p_hwfn->dcbx_no_edpm = (u8)val; + + qed_rdma_dpm_conf(p_hwfn, p_ptt); +} + +int qed_roce_setup(struct qed_hwfn *p_hwfn) +{ + return qed_spq_register_async_cb(p_hwfn, PROTOCOLID_ROCE, + qed_roce_async_event); +} + +int qed_roce_init_hw(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) +{ + u32 ll2_ethertype_en; + + qed_wr(p_hwfn, p_ptt, PRS_REG_ROCE_DEST_QP_MAX_PF, 0); + + p_hwfn->rdma_prs_search_reg = PRS_REG_SEARCH_ROCE; + + 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 | 0x01)); + + if (qed_cxt_get_proto_cid_start(p_hwfn, PROTOCOLID_ROCE) % 2) { + DP_NOTICE(p_hwfn, "The first RoCE's cid should be even\n"); + return -EINVAL; + } + + DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Initializing HW - Done\n"); + return 0; +} |