From: Kalderon, Michal Date: Sun, 2 Jul 2017 07:29:22 +0000 (+0300) Subject: qed: Implement iWARP initialization, teardown and qp operations X-Git-Tag: MMI-PSA29.97-13-9~5285^2~35^2~10 X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=67b40dccc45ff5d488aad17114e80e00029fd854;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git qed: Implement iWARP initialization, teardown and qp operations This patch adds iWARP support for flows that have common code between RoCE and iWARP, such as initialization, teardown and qp setup verbs: create, destroy, modify, query. It introduces the iWARP specific files qed_iwarp.[ch] and iwarp_common.h Signed-off-by: Michal Kalderon Signed-off-by: Yuval Mintz Signed-off-by: Ariel Elior Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/qlogic/qed/Makefile b/drivers/net/ethernet/qlogic/qed/Makefile index 67452380b60e..82dd47068e18 100644 --- a/drivers/net/ethernet/qlogic/qed/Makefile +++ b/drivers/net/ethernet/qlogic/qed/Makefile @@ -5,6 +5,6 @@ qed-y := qed_cxt.o qed_dev.o qed_hw.o qed_init_fw_funcs.o qed_init_ops.o \ qed_selftest.o qed_dcbx.o qed_debug.o qed_ptp.o qed-$(CONFIG_QED_SRIOV) += qed_sriov.o qed_vf.o qed-$(CONFIG_QED_LL2) += qed_ll2.o -qed-$(CONFIG_QED_RDMA) += qed_roce.o qed_rdma.o +qed-$(CONFIG_QED_RDMA) += qed_roce.o qed_rdma.o qed_iwarp.o qed-$(CONFIG_QED_ISCSI) += qed_iscsi.o qed_ooo.o qed-$(CONFIG_QED_FCOE) += qed_fcoe.o diff --git a/drivers/net/ethernet/qlogic/qed/qed_dev.c b/drivers/net/ethernet/qlogic/qed/qed_dev.c index 68e61823bfc0..6c8505dc5c31 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_dev.c +++ b/drivers/net/ethernet/qlogic/qed/qed_dev.c @@ -937,8 +937,15 @@ int qed_resc_alloc(struct qed_dev *cdev) /* EQ */ n_eqes = qed_chain_get_capacity(&p_hwfn->p_spq->chain); if (QED_IS_RDMA_PERSONALITY(p_hwfn)) { + enum protocol_type rdma_proto; + + if (QED_IS_ROCE_PERSONALITY(p_hwfn)) + rdma_proto = PROTOCOLID_ROCE; + else + rdma_proto = PROTOCOLID_IWARP; + num_cons = qed_cxt_get_proto_cid_count(p_hwfn, - PROTOCOLID_ROCE, + rdma_proto, NULL) * 2; n_eqes += num_cons + 2 * MAX_NUM_VFS_BB; } else if (p_hwfn->hw_info.personality == QED_PCI_ISCSI) { diff --git a/drivers/net/ethernet/qlogic/qed/qed_hsi.h b/drivers/net/ethernet/qlogic/qed/qed_hsi.h index 3bf3614b3084..31fb0bffa098 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_hsi.h +++ b/drivers/net/ethernet/qlogic/qed/qed_hsi.h @@ -46,6 +46,7 @@ #include #include #include +#include #include #include #include diff --git a/drivers/net/ethernet/qlogic/qed/qed_iwarp.c b/drivers/net/ethernet/qlogic/qed/qed_iwarp.c new file mode 100644 index 000000000000..a8bd5f8edec6 --- /dev/null +++ b/drivers/net/ethernet/qlogic/qed/qed_iwarp.c @@ -0,0 +1,531 @@ +/* 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 "qed_cxt.h" +#include "qed_hw.h" +#include "qed_rdma.h" +#include "qed_reg_addr.h" +#include "qed_sp.h" + +#define QED_IWARP_ORD_DEFAULT 32 +#define QED_IWARP_IRD_DEFAULT 32 +#define QED_IWARP_RCV_WND_SIZE_DEF (256 * 1024) +#define QED_IWARP_RCV_WND_SIZE_MIN (64 * 1024) +#define QED_IWARP_TS_EN BIT(0) +#define QED_IWARP_PARAM_CRC_NEEDED (1) +#define QED_IWARP_PARAM_P2P (1) + +static int qed_iwarp_async_event(struct qed_hwfn *p_hwfn, + u8 fw_event_code, u16 echo, + union event_ring_data *data, + u8 fw_return_code); + +/* Override devinfo with iWARP specific values */ +void qed_iwarp_init_devinfo(struct qed_hwfn *p_hwfn) +{ + struct qed_rdma_device *dev = p_hwfn->p_rdma_info->dev; + + dev->max_inline = IWARP_REQ_MAX_INLINE_DATA_SIZE; + dev->max_qp = min_t(u32, + IWARP_MAX_QPS, + p_hwfn->p_rdma_info->num_qps); + + dev->max_cq = dev->max_qp; + + dev->max_qp_resp_rd_atomic_resc = QED_IWARP_IRD_DEFAULT; + dev->max_qp_req_rd_atomic_resc = QED_IWARP_ORD_DEFAULT; +} + +void qed_iwarp_init_hw(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) +{ + p_hwfn->rdma_prs_search_reg = PRS_REG_SEARCH_TCP; + qed_wr(p_hwfn, p_ptt, p_hwfn->rdma_prs_search_reg, 1); + p_hwfn->b_rdma_enabled_in_prs = true; +} + +static void qed_iwarp_cid_cleaned(struct qed_hwfn *p_hwfn, u32 cid) +{ + cid -= qed_cxt_get_proto_cid_start(p_hwfn, p_hwfn->p_rdma_info->proto); + + spin_lock_bh(&p_hwfn->p_rdma_info->lock); + qed_bmap_release_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, cid); + spin_unlock_bh(&p_hwfn->p_rdma_info->lock); +} + +static int qed_iwarp_alloc_cid(struct qed_hwfn *p_hwfn, u32 *cid) +{ + int rc; + + spin_lock_bh(&p_hwfn->p_rdma_info->lock); + rc = qed_rdma_bmap_alloc_id(p_hwfn, &p_hwfn->p_rdma_info->cid_map, cid); + spin_unlock_bh(&p_hwfn->p_rdma_info->lock); + if (rc) { + DP_NOTICE(p_hwfn, "Failed in allocating iwarp cid\n"); + return rc; + } + *cid += qed_cxt_get_proto_cid_start(p_hwfn, p_hwfn->p_rdma_info->proto); + + rc = qed_cxt_dynamic_ilt_alloc(p_hwfn, QED_ELEM_CXT, *cid); + if (rc) + qed_iwarp_cid_cleaned(p_hwfn, *cid); + + return rc; +} + +int qed_iwarp_create_qp(struct qed_hwfn *p_hwfn, + struct qed_rdma_qp *qp, + struct qed_rdma_create_qp_out_params *out_params) +{ + struct iwarp_create_qp_ramrod_data *p_ramrod; + struct qed_sp_init_data init_data; + struct qed_spq_entry *p_ent; + u16 physical_queue; + u32 cid; + int rc; + + qp->shared_queue = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev, + IWARP_SHARED_QUEUE_PAGE_SIZE, + &qp->shared_queue_phys_addr, + GFP_KERNEL); + if (!qp->shared_queue) + return -ENOMEM; + + out_params->sq_pbl_virt = (u8 *)qp->shared_queue + + IWARP_SHARED_QUEUE_PAGE_SQ_PBL_OFFSET; + out_params->sq_pbl_phys = qp->shared_queue_phys_addr + + IWARP_SHARED_QUEUE_PAGE_SQ_PBL_OFFSET; + out_params->rq_pbl_virt = (u8 *)qp->shared_queue + + IWARP_SHARED_QUEUE_PAGE_RQ_PBL_OFFSET; + out_params->rq_pbl_phys = qp->shared_queue_phys_addr + + IWARP_SHARED_QUEUE_PAGE_RQ_PBL_OFFSET; + + rc = qed_iwarp_alloc_cid(p_hwfn, &cid); + if (rc) + goto err1; + + qp->icid = (u16)cid; + + memset(&init_data, 0, sizeof(init_data)); + init_data.opaque_fid = p_hwfn->hw_info.opaque_fid; + init_data.cid = qp->icid; + init_data.comp_mode = QED_SPQ_MODE_EBLOCK; + + rc = qed_sp_init_request(p_hwfn, &p_ent, + IWARP_RAMROD_CMD_ID_CREATE_QP, + PROTOCOLID_IWARP, &init_data); + if (rc) + goto err2; + + p_ramrod = &p_ent->ramrod.iwarp_create_qp; + + SET_FIELD(p_ramrod->flags, + IWARP_CREATE_QP_RAMROD_DATA_FMR_AND_RESERVED_EN, + qp->fmr_and_reserved_lkey); + + SET_FIELD(p_ramrod->flags, + IWARP_CREATE_QP_RAMROD_DATA_SIGNALED_COMP, qp->signal_all); + + SET_FIELD(p_ramrod->flags, + IWARP_CREATE_QP_RAMROD_DATA_RDMA_RD_EN, + qp->incoming_rdma_read_en); + + SET_FIELD(p_ramrod->flags, + IWARP_CREATE_QP_RAMROD_DATA_RDMA_WR_EN, + qp->incoming_rdma_write_en); + + SET_FIELD(p_ramrod->flags, + IWARP_CREATE_QP_RAMROD_DATA_ATOMIC_EN, + qp->incoming_atomic_en); + + SET_FIELD(p_ramrod->flags, + IWARP_CREATE_QP_RAMROD_DATA_SRQ_FLG, qp->use_srq); + + p_ramrod->pd = qp->pd; + p_ramrod->sq_num_pages = qp->sq_num_pages; + p_ramrod->rq_num_pages = qp->rq_num_pages; + + p_ramrod->qp_handle_for_cqe.hi = cpu_to_le32(qp->qp_handle.hi); + p_ramrod->qp_handle_for_cqe.lo = cpu_to_le32(qp->qp_handle.lo); + + p_ramrod->cq_cid_for_sq = + cpu_to_le32((p_hwfn->hw_info.opaque_fid << 16) | qp->sq_cq_id); + p_ramrod->cq_cid_for_rq = + cpu_to_le32((p_hwfn->hw_info.opaque_fid << 16) | qp->rq_cq_id); + + p_ramrod->dpi = cpu_to_le16(qp->dpi); + + physical_queue = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD); + p_ramrod->physical_q0 = cpu_to_le16(physical_queue); + physical_queue = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK); + p_ramrod->physical_q1 = cpu_to_le16(physical_queue); + + rc = qed_spq_post(p_hwfn, p_ent, NULL); + if (rc) + goto err2; + + return rc; + +err2: + qed_iwarp_cid_cleaned(p_hwfn, cid); +err1: + dma_free_coherent(&p_hwfn->cdev->pdev->dev, + IWARP_SHARED_QUEUE_PAGE_SIZE, + qp->shared_queue, qp->shared_queue_phys_addr); + + return rc; +} + +static int qed_iwarp_modify_fw(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp) +{ + struct iwarp_modify_qp_ramrod_data *p_ramrod; + struct qed_sp_init_data init_data; + struct qed_spq_entry *p_ent; + int 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, + IWARP_RAMROD_CMD_ID_MODIFY_QP, + p_hwfn->p_rdma_info->proto, &init_data); + if (rc) + return rc; + + p_ramrod = &p_ent->ramrod.iwarp_modify_qp; + SET_FIELD(p_ramrod->flags, IWARP_MODIFY_QP_RAMROD_DATA_STATE_TRANS_EN, + 0x1); + if (qp->iwarp_state == QED_IWARP_QP_STATE_CLOSING) + p_ramrod->transition_to_state = IWARP_MODIFY_QP_STATE_CLOSING; + else + p_ramrod->transition_to_state = IWARP_MODIFY_QP_STATE_ERROR; + + rc = qed_spq_post(p_hwfn, p_ent, NULL); + + DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x)rc=%d\n", qp->icid, rc); + + return rc; +} + +enum qed_iwarp_qp_state qed_roce2iwarp_state(enum qed_roce_qp_state state) +{ + switch (state) { + case QED_ROCE_QP_STATE_RESET: + case QED_ROCE_QP_STATE_INIT: + case QED_ROCE_QP_STATE_RTR: + return QED_IWARP_QP_STATE_IDLE; + case QED_ROCE_QP_STATE_RTS: + return QED_IWARP_QP_STATE_RTS; + case QED_ROCE_QP_STATE_SQD: + return QED_IWARP_QP_STATE_CLOSING; + case QED_ROCE_QP_STATE_ERR: + return QED_IWARP_QP_STATE_ERROR; + case QED_ROCE_QP_STATE_SQE: + return QED_IWARP_QP_STATE_TERMINATE; + default: + return QED_IWARP_QP_STATE_ERROR; + } +} + +static enum qed_roce_qp_state +qed_iwarp2roce_state(enum qed_iwarp_qp_state state) +{ + switch (state) { + case QED_IWARP_QP_STATE_IDLE: + return QED_ROCE_QP_STATE_INIT; + case QED_IWARP_QP_STATE_RTS: + return QED_ROCE_QP_STATE_RTS; + case QED_IWARP_QP_STATE_TERMINATE: + return QED_ROCE_QP_STATE_SQE; + case QED_IWARP_QP_STATE_CLOSING: + return QED_ROCE_QP_STATE_SQD; + case QED_IWARP_QP_STATE_ERROR: + return QED_ROCE_QP_STATE_ERR; + default: + return QED_ROCE_QP_STATE_ERR; + } +} + +const char *iwarp_state_names[] = { + "IDLE", + "RTS", + "TERMINATE", + "CLOSING", + "ERROR", +}; + +int +qed_iwarp_modify_qp(struct qed_hwfn *p_hwfn, + struct qed_rdma_qp *qp, + enum qed_iwarp_qp_state new_state, bool internal) +{ + enum qed_iwarp_qp_state prev_iw_state; + bool modify_fw = false; + int rc = 0; + + /* modify QP can be called from upper-layer or as a result of async + * RST/FIN... therefore need to protect + */ + spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.qp_lock); + prev_iw_state = qp->iwarp_state; + + if (prev_iw_state == new_state) { + spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.qp_lock); + return 0; + } + + switch (prev_iw_state) { + case QED_IWARP_QP_STATE_IDLE: + switch (new_state) { + case QED_IWARP_QP_STATE_RTS: + qp->iwarp_state = QED_IWARP_QP_STATE_RTS; + break; + case QED_IWARP_QP_STATE_ERROR: + qp->iwarp_state = QED_IWARP_QP_STATE_ERROR; + if (!internal) + modify_fw = true; + break; + default: + break; + } + break; + case QED_IWARP_QP_STATE_RTS: + switch (new_state) { + case QED_IWARP_QP_STATE_CLOSING: + if (!internal) + modify_fw = true; + + qp->iwarp_state = QED_IWARP_QP_STATE_CLOSING; + break; + case QED_IWARP_QP_STATE_ERROR: + if (!internal) + modify_fw = true; + qp->iwarp_state = QED_IWARP_QP_STATE_ERROR; + break; + default: + break; + } + break; + case QED_IWARP_QP_STATE_ERROR: + switch (new_state) { + case QED_IWARP_QP_STATE_IDLE: + + qp->iwarp_state = new_state; + break; + case QED_IWARP_QP_STATE_CLOSING: + /* could happen due to race... do nothing.... */ + break; + default: + rc = -EINVAL; + } + break; + case QED_IWARP_QP_STATE_TERMINATE: + case QED_IWARP_QP_STATE_CLOSING: + qp->iwarp_state = new_state; + break; + default: + break; + } + + DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) %s --> %s%s\n", + qp->icid, + iwarp_state_names[prev_iw_state], + iwarp_state_names[qp->iwarp_state], + internal ? "internal" : ""); + + spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.qp_lock); + + if (modify_fw) + rc = qed_iwarp_modify_fw(p_hwfn, qp); + + return rc; +} + +int qed_iwarp_fw_destroy(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp) +{ + struct qed_sp_init_data init_data; + struct qed_spq_entry *p_ent; + int 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, + IWARP_RAMROD_CMD_ID_DESTROY_QP, + p_hwfn->p_rdma_info->proto, &init_data); + if (rc) + return rc; + + rc = qed_spq_post(p_hwfn, p_ent, NULL); + + DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) rc = %d\n", qp->icid, rc); + + return rc; +} + +int qed_iwarp_destroy_qp(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp) +{ + int rc = 0; + + if (qp->iwarp_state != QED_IWARP_QP_STATE_ERROR) { + rc = qed_iwarp_modify_qp(p_hwfn, qp, + QED_IWARP_QP_STATE_ERROR, false); + if (rc) + return rc; + } + + rc = qed_iwarp_fw_destroy(p_hwfn, qp); + + if (qp->shared_queue) + dma_free_coherent(&p_hwfn->cdev->pdev->dev, + IWARP_SHARED_QUEUE_PAGE_SIZE, + qp->shared_queue, qp->shared_queue_phys_addr); + + return rc; +} + +#define QED_IWARP_MAX_CID_CLEAN_TIME 100 +#define QED_IWARP_MAX_NO_PROGRESS_CNT 5 + +/* This function waits for all the bits of a bmap to be cleared, as long as + * there is progress ( i.e. the number of bits left to be cleared decreases ) + * the function continues. + */ +static int +qed_iwarp_wait_cid_map_cleared(struct qed_hwfn *p_hwfn, struct qed_bmap *bmap) +{ + int prev_weight = 0; + int wait_count = 0; + int weight = 0; + + weight = bitmap_weight(bmap->bitmap, bmap->max_count); + prev_weight = weight; + + while (weight) { + msleep(QED_IWARP_MAX_CID_CLEAN_TIME); + + weight = bitmap_weight(bmap->bitmap, bmap->max_count); + + if (prev_weight == weight) { + wait_count++; + } else { + prev_weight = weight; + wait_count = 0; + } + + if (wait_count > QED_IWARP_MAX_NO_PROGRESS_CNT) { + DP_NOTICE(p_hwfn, + "%s bitmap wait timed out (%d cids pending)\n", + bmap->name, weight); + return -EBUSY; + } + } + return 0; +} + +static int qed_iwarp_wait_for_all_cids(struct qed_hwfn *p_hwfn) +{ + /* Now wait for all cids to be completed */ + return qed_iwarp_wait_cid_map_cleared(p_hwfn, + &p_hwfn->p_rdma_info->cid_map); +} + +int qed_iwarp_alloc(struct qed_hwfn *p_hwfn) +{ + spin_lock_init(&p_hwfn->p_rdma_info->iwarp.iw_lock); + + return 0; +} + +void qed_iwarp_resc_free(struct qed_hwfn *p_hwfn) +{ +} + +int qed_iwarp_setup(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt, + struct qed_rdma_start_in_params *params) +{ + struct qed_iwarp_info *iwarp_info; + u32 rcv_wnd_size; + int rc = 0; + + iwarp_info = &p_hwfn->p_rdma_info->iwarp; + + iwarp_info->tcp_flags = QED_IWARP_TS_EN; + rcv_wnd_size = QED_IWARP_RCV_WND_SIZE_DEF; + + /* value 0 is used for ilog2(QED_IWARP_RCV_WND_SIZE_MIN) */ + iwarp_info->rcv_wnd_scale = ilog2(rcv_wnd_size) - + ilog2(QED_IWARP_RCV_WND_SIZE_MIN); + iwarp_info->crc_needed = QED_IWARP_PARAM_CRC_NEEDED; + iwarp_info->mpa_rev = MPA_NEGOTIATION_TYPE_ENHANCED; + + iwarp_info->peer2peer = QED_IWARP_PARAM_P2P; + + spin_lock_init(&p_hwfn->p_rdma_info->iwarp.qp_lock); + + qed_spq_register_async_cb(p_hwfn, PROTOCOLID_IWARP, + qed_iwarp_async_event); + + return rc; +} + +int qed_iwarp_stop(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) +{ + int rc; + + rc = qed_iwarp_wait_for_all_cids(p_hwfn); + if (rc) + return rc; + + qed_spq_unregister_async_cb(p_hwfn, PROTOCOLID_IWARP); + + return 0; +} + +static int qed_iwarp_async_event(struct qed_hwfn *p_hwfn, + u8 fw_event_code, u16 echo, + union event_ring_data *data, + u8 fw_return_code) +{ + return 0; +} + +void +qed_iwarp_query_qp(struct qed_rdma_qp *qp, + struct qed_rdma_query_qp_out_params *out_params) +{ + out_params->state = qed_iwarp2roce_state(qp->iwarp_state); +} diff --git a/drivers/net/ethernet/qlogic/qed/qed_iwarp.h b/drivers/net/ethernet/qlogic/qed/qed_iwarp.h new file mode 100644 index 000000000000..05e5e45be6cf --- /dev/null +++ b/drivers/net/ethernet/qlogic/qed/qed_iwarp.h @@ -0,0 +1,85 @@ +/* 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. + */ +#ifndef _QED_IWARP_H +#define _QED_IWARP_H + +enum qed_iwarp_qp_state { + QED_IWARP_QP_STATE_IDLE, + QED_IWARP_QP_STATE_RTS, + QED_IWARP_QP_STATE_TERMINATE, + QED_IWARP_QP_STATE_CLOSING, + QED_IWARP_QP_STATE_ERROR, +}; + +enum qed_iwarp_qp_state qed_roce2iwarp_state(enum qed_roce_qp_state state); + +struct qed_iwarp_info { + spinlock_t iw_lock; /* for iwarp resources */ + spinlock_t qp_lock; /* for teardown races */ + u32 rcv_wnd_scale; + u16 max_mtu; + u8 mac_addr[ETH_ALEN]; + u8 crc_needed; + u8 tcp_flags; + u8 peer2peer; + enum mpa_negotiation_mode mpa_rev; + enum mpa_rtr_type rtr_type; +}; + +int qed_iwarp_alloc(struct qed_hwfn *p_hwfn); + +int qed_iwarp_setup(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt, + struct qed_rdma_start_in_params *params); + +int qed_iwarp_stop(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt); + +void qed_iwarp_resc_free(struct qed_hwfn *p_hwfn); + +void qed_iwarp_init_devinfo(struct qed_hwfn *p_hwfn); + +void qed_iwarp_init_hw(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt); + +int qed_iwarp_create_qp(struct qed_hwfn *p_hwfn, + struct qed_rdma_qp *qp, + struct qed_rdma_create_qp_out_params *out_params); + +int qed_iwarp_modify_qp(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp, + enum qed_iwarp_qp_state new_state, bool internal); + +int qed_iwarp_destroy_qp(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp); + +int qed_iwarp_fw_destroy(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp); + +void qed_iwarp_query_qp(struct qed_rdma_qp *qp, + struct qed_rdma_query_qp_out_params *out_params); + +#endif diff --git a/drivers/net/ethernet/qlogic/qed/qed_rdma.c b/drivers/net/ethernet/qlogic/qed/qed_rdma.c index df76e212f86e..ee6887f8c260 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_rdma.c +++ b/drivers/net/ethernet/qlogic/qed/qed_rdma.c @@ -161,7 +161,10 @@ static int qed_rdma_alloc(struct qed_hwfn *p_hwfn, num_cons = qed_cxt_get_proto_cid_count(p_hwfn, p_rdma_info->proto, NULL); - p_rdma_info->num_qps = num_cons / 2; + 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); @@ -252,6 +255,13 @@ static int qed_rdma_alloc(struct qed_hwfn *p_hwfn, "Failed to allocate real cid bitmap, rc = %d\n", rc); goto free_cid_map; } + + if (QED_IS_IWARP_PERSONALITY(p_hwfn)) + rc = qed_iwarp_alloc(p_hwfn); + + if (rc) + goto free_cid_map; + DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Allocation successful\n"); return 0; @@ -329,6 +339,9 @@ 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); @@ -470,6 +483,9 @@ static void qed_rdma_init_devinfo(struct qed_hwfn *p_hwfn, 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) @@ -490,29 +506,17 @@ static void qed_rdma_init_port(struct qed_hwfn *p_hwfn) static int qed_rdma_init_hw(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) { - u32 ll2_ethertype_en; + int rc = 0; DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Initializing HW\n"); p_hwfn->b_rdma_enabled_in_prs = false; - qed_wr(p_hwfn, p_ptt, PRS_REG_ROCE_DEST_QP_MAX_PF, 0); - - p_hwfn->rdma_prs_search_reg = PRS_REG_SEARCH_ROCE; - - /* We delay writing to this reg until first cid is allocated. See - * qed_cxt_dynamic_ilt_alloc function for more details - */ - 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; - } + 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); - DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "Initializing HW - Done\n"); - return 0; + return rc; } static int qed_rdma_start_fw(struct qed_hwfn *p_hwfn, @@ -544,7 +548,10 @@ static int qed_rdma_start_fw(struct qed_hwfn *p_hwfn, if (rc) return rc; - p_ramrod = &p_ent->ramrod.roce_init_func.rdma; + if (QED_IS_IWARP_PERSONALITY(p_hwfn)) + 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, @@ -641,7 +648,15 @@ static int qed_rdma_setup(struct qed_hwfn *p_hwfn, if (rc) return rc; - qed_roce_setup(p_hwfn); + 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); } @@ -675,7 +690,16 @@ int qed_rdma_stop(void *rdma_cxt) qed_wr(p_hwfn, p_ptt, PRS_REG_LIGHT_L2_ETHERTYPE_EN, (ll2_ethertype_en & 0xFFFE)); - qed_roce_stop(p_hwfn); + 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 */ @@ -810,7 +834,9 @@ static int qed_fill_rdma_dev_info(struct qed_dev *cdev, memset(info, 0, sizeof(*info)); - info->rdma_type = QED_RDMA_TYPE_ROCE; + 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); @@ -1112,7 +1138,7 @@ static int qed_rdma_query_qp(void *rdma_cxt, struct qed_rdma_query_qp_out_params *out_params) { struct qed_hwfn *p_hwfn = (struct qed_hwfn *)rdma_cxt; - int rc; + int rc = 0; DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "icid = %08x\n", qp->icid); @@ -1138,7 +1164,10 @@ static int qed_rdma_query_qp(void *rdma_cxt, out_params->max_dest_rd_atomic = qp->max_rd_atomic_resp; out_params->sqd_async = qp->sqd_async; - rc = qed_roce_query_qp(p_hwfn, qp, out_params); + 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; @@ -1151,7 +1180,10 @@ static int qed_rdma_destroy_qp(void *rdma_cxt, struct qed_rdma_qp *qp) DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "icid = %08x\n", qp->icid); - rc = qed_roce_destroy_qp(p_hwfn, qp); + 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); @@ -1190,20 +1222,27 @@ qed_rdma_create_qp(void *rdma_cxt, 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; - rc = qed_roce_alloc_cid(p_hwfn, &qp->icid); - qp->qpid = ((0xFF << 16) | qp->icid); - - DP_INFO(p_hwfn, "ROCE qpid=%x\n", qp->qpid); - - if (rc) { - kfree(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); @@ -1226,6 +1265,19 @@ qed_rdma_create_qp(void *rdma_cxt, 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; @@ -1324,7 +1376,14 @@ static int qed_rdma_modify_qp(void *rdma_cxt, qp->cur_state); } - rc = qed_roce_modify_qp(p_hwfn, qp, prev_state, params); + 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; diff --git a/drivers/net/ethernet/qlogic/qed/qed_rdma.h b/drivers/net/ethernet/qlogic/qed/qed_rdma.h index d91e5c4069a6..90e4e0f13727 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_rdma.h +++ b/drivers/net/ethernet/qlogic/qed/qed_rdma.h @@ -42,6 +42,7 @@ #include "qed.h" #include "qed_dev_api.h" #include "qed_hsi.h" +#include "qed_iwarp.h" #include "qed_roce.h" #define QED_RDMA_MAX_FMR (RDMA_MAX_TIDS) @@ -97,6 +98,7 @@ struct qed_rdma_info { u16 queue_zone_base; u16 max_queue_zones; enum protocol_type proto; + struct qed_iwarp_info iwarp; }; struct qed_rdma_qp { @@ -105,6 +107,7 @@ struct qed_rdma_qp { u32 qpid; u16 icid; enum qed_roce_qp_state cur_state; + enum qed_iwarp_qp_state iwarp_state; bool use_srq; bool signal_all; bool fmr_and_reserved_lkey; diff --git a/drivers/net/ethernet/qlogic/qed/qed_roce.c b/drivers/net/ethernet/qlogic/qed/qed_roce.c index e53adc3d009b..fb7c2d1562ae 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_roce.c +++ b/drivers/net/ethernet/qlogic/qed/qed_roce.c @@ -1149,3 +1149,23 @@ int qed_roce_setup(struct qed_hwfn *p_hwfn) 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; +} diff --git a/drivers/net/ethernet/qlogic/qed/qed_sp.h b/drivers/net/ethernet/qlogic/qed/qed_sp.h index 56c95fb9a26d..c3752c56e54d 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_sp.h +++ b/drivers/net/ethernet/qlogic/qed/qed_sp.h @@ -104,12 +104,15 @@ union ramrod_data { struct roce_query_qp_req_ramrod_data roce_query_qp_req; struct roce_destroy_qp_resp_ramrod_data roce_destroy_qp_resp; struct roce_destroy_qp_req_ramrod_data roce_destroy_qp_req; + struct roce_init_func_ramrod_data roce_init_func; struct rdma_create_cq_ramrod_data rdma_create_cq; struct rdma_destroy_cq_ramrod_data rdma_destroy_cq; struct rdma_srq_create_ramrod_data rdma_create_srq; struct rdma_srq_destroy_ramrod_data rdma_destroy_srq; struct rdma_srq_modify_ramrod_data rdma_modify_srq; - struct roce_init_func_ramrod_data roce_init_func; + struct iwarp_create_qp_ramrod_data iwarp_create_qp; + struct iwarp_modify_qp_ramrod_data iwarp_modify_qp; + struct iwarp_init_func_ramrod_data iwarp_init_func; struct fcoe_init_ramrod_params fcoe_init; struct fcoe_conn_offload_ramrod_params fcoe_conn_ofld; struct fcoe_conn_terminate_ramrod_params fcoe_conn_terminate; diff --git a/include/linux/qed/iwarp_common.h b/include/linux/qed/iwarp_common.h new file mode 100644 index 000000000000..b8b3e1cfae90 --- /dev/null +++ b/include/linux/qed/iwarp_common.h @@ -0,0 +1,53 @@ +/* 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. + */ +#ifndef __IWARP_COMMON__ +#define __IWARP_COMMON__ +#include +/************************/ +/* IWARP FW CONSTANTS */ +/************************/ + +#define IWARP_ACTIVE_MODE 0 +#define IWARP_PASSIVE_MODE 1 + +#define IWARP_SHARED_QUEUE_PAGE_SIZE (0x8000) +#define IWARP_SHARED_QUEUE_PAGE_RQ_PBL_OFFSET (0x4000) +#define IWARP_SHARED_QUEUE_PAGE_RQ_PBL_MAX_SIZE (0x1000) +#define IWARP_SHARED_QUEUE_PAGE_SQ_PBL_OFFSET (0x5000) +#define IWARP_SHARED_QUEUE_PAGE_SQ_PBL_MAX_SIZE (0x3000) + +#define IWARP_REQ_MAX_INLINE_DATA_SIZE (128) +#define IWARP_REQ_MAX_SINGLE_SQ_WQE_SIZE (176) + +#define IWARP_MAX_QPS (64 * 1024) + +#endif /* __IWARP_COMMON__ */ diff --git a/include/linux/qed/qed_rdma_if.h b/include/linux/qed/qed_rdma_if.h index ff9be01b5f53..5b4bb09a3354 100644 --- a/include/linux/qed/qed_rdma_if.h +++ b/include/linux/qed/qed_rdma_if.h @@ -491,6 +491,7 @@ struct qed_roce_ll2_packet { enum qed_rdma_type { QED_RDMA_TYPE_ROCE, + QED_RDMA_TYPE_IWARP }; struct qed_dev_rdma_info {