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authorParav Pandit <parav.pandit@emulex.com>2012-03-21 04:09:06 +0530
committerRoland Dreier <roland@purestorage.com>2012-05-08 11:17:47 -0700
commitfe2caefcdf5869f308c102e3d64d40683bfad711 (patch)
tree897e66d7aad31183fec317c4edba4f72f8d98e08 /drivers/infiniband/hw/ocrdma/ocrdma_hw.c
parentbe2net: Add functionality to support RoCE driver (diff)
downloadlinux-dev-fe2caefcdf5869f308c102e3d64d40683bfad711.tar.xz
linux-dev-fe2caefcdf5869f308c102e3d64d40683bfad711.zip
RDMA/ocrdma: Add driver for Emulex OneConnect IBoE RDMA adapter
Signed-off-by: Parav Pandit <parav.pandit@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'drivers/infiniband/hw/ocrdma/ocrdma_hw.c')
-rw-r--r--drivers/infiniband/hw/ocrdma/ocrdma_hw.c2640
1 files changed, 2640 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_hw.c b/drivers/infiniband/hw/ocrdma/ocrdma_hw.c
new file mode 100644
index 000000000000..c53545f1baf6
--- /dev/null
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_hw.c
@@ -0,0 +1,2640 @@
+/*******************************************************************
+ * This file is part of the Emulex RoCE Device Driver for *
+ * RoCE (RDMA over Converged Ethernet) CNA Adapters. *
+ * Copyright (C) 2008-2012 Emulex. All rights reserved. *
+ * EMULEX and SLI are trademarks of Emulex. *
+ * www.emulex.com *
+ * *
+ * This program is free software; you can redistribute it and/or *
+ * modify it under the terms of version 2 of the GNU General *
+ * Public License as published by the Free Software Foundation. *
+ * This program is distributed in the hope that it will be useful. *
+ * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
+ * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
+ * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
+ * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
+ * TO BE LEGALLY INVALID. See the GNU General Public License for *
+ * more details, a copy of which can be found in the file COPYING *
+ * included with this package. *
+ *
+ * Contact Information:
+ * linux-drivers@emulex.com
+ *
+ * Emulex
+ * 3333 Susan Street
+ * Costa Mesa, CA 92626
+ *******************************************************************/
+
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/log2.h>
+#include <linux/dma-mapping.h>
+
+#include <rdma/ib_verbs.h>
+#include <rdma/ib_user_verbs.h>
+#include <rdma/ib_addr.h>
+
+#include "ocrdma.h"
+#include "ocrdma_hw.h"
+#include "ocrdma_verbs.h"
+#include "ocrdma_ah.h"
+
+enum mbx_status {
+ OCRDMA_MBX_STATUS_FAILED = 1,
+ OCRDMA_MBX_STATUS_ILLEGAL_FIELD = 3,
+ OCRDMA_MBX_STATUS_OOR = 100,
+ OCRDMA_MBX_STATUS_INVALID_PD = 101,
+ OCRDMA_MBX_STATUS_PD_INUSE = 102,
+ OCRDMA_MBX_STATUS_INVALID_CQ = 103,
+ OCRDMA_MBX_STATUS_INVALID_QP = 104,
+ OCRDMA_MBX_STATUS_INVALID_LKEY = 105,
+ OCRDMA_MBX_STATUS_ORD_EXCEEDS = 106,
+ OCRDMA_MBX_STATUS_IRD_EXCEEDS = 107,
+ OCRDMA_MBX_STATUS_SENDQ_WQE_EXCEEDS = 108,
+ OCRDMA_MBX_STATUS_RECVQ_RQE_EXCEEDS = 109,
+ OCRDMA_MBX_STATUS_SGE_SEND_EXCEEDS = 110,
+ OCRDMA_MBX_STATUS_SGE_WRITE_EXCEEDS = 111,
+ OCRDMA_MBX_STATUS_SGE_RECV_EXCEEDS = 112,
+ OCRDMA_MBX_STATUS_INVALID_STATE_CHANGE = 113,
+ OCRDMA_MBX_STATUS_MW_BOUND = 114,
+ OCRDMA_MBX_STATUS_INVALID_VA = 115,
+ OCRDMA_MBX_STATUS_INVALID_LENGTH = 116,
+ OCRDMA_MBX_STATUS_INVALID_FBO = 117,
+ OCRDMA_MBX_STATUS_INVALID_ACC_RIGHTS = 118,
+ OCRDMA_MBX_STATUS_INVALID_PBE_SIZE = 119,
+ OCRDMA_MBX_STATUS_INVALID_PBL_ENTRY = 120,
+ OCRDMA_MBX_STATUS_INVALID_PBL_SHIFT = 121,
+ OCRDMA_MBX_STATUS_INVALID_SRQ_ID = 129,
+ OCRDMA_MBX_STATUS_SRQ_ERROR = 133,
+ OCRDMA_MBX_STATUS_RQE_EXCEEDS = 134,
+ OCRDMA_MBX_STATUS_MTU_EXCEEDS = 135,
+ OCRDMA_MBX_STATUS_MAX_QP_EXCEEDS = 136,
+ OCRDMA_MBX_STATUS_SRQ_LIMIT_EXCEEDS = 137,
+ OCRDMA_MBX_STATUS_SRQ_SIZE_UNDERUNS = 138,
+ OCRDMA_MBX_STATUS_QP_BOUND = 130,
+ OCRDMA_MBX_STATUS_INVALID_CHANGE = 139,
+ OCRDMA_MBX_STATUS_ATOMIC_OPS_UNSUP = 140,
+ OCRDMA_MBX_STATUS_INVALID_RNR_NAK_TIMER = 141,
+ OCRDMA_MBX_STATUS_MW_STILL_BOUND = 142,
+ OCRDMA_MBX_STATUS_PKEY_INDEX_INVALID = 143,
+ OCRDMA_MBX_STATUS_PKEY_INDEX_EXCEEDS = 144
+};
+
+enum additional_status {
+ OCRDMA_MBX_ADDI_STATUS_INSUFFICIENT_RESOURCES = 22
+};
+
+enum cqe_status {
+ OCRDMA_MBX_CQE_STATUS_INSUFFICIENT_PRIVILEDGES = 1,
+ OCRDMA_MBX_CQE_STATUS_INVALID_PARAMETER = 2,
+ OCRDMA_MBX_CQE_STATUS_INSUFFICIENT_RESOURCES = 3,
+ OCRDMA_MBX_CQE_STATUS_QUEUE_FLUSHING = 4,
+ OCRDMA_MBX_CQE_STATUS_DMA_FAILED = 5
+};
+
+static inline void *ocrdma_get_eqe(struct ocrdma_eq *eq)
+{
+ return (u8 *)eq->q.va + (eq->q.tail * sizeof(struct ocrdma_eqe));
+}
+
+static inline void ocrdma_eq_inc_tail(struct ocrdma_eq *eq)
+{
+ eq->q.tail = (eq->q.tail + 1) & (OCRDMA_EQ_LEN - 1);
+}
+
+static inline void *ocrdma_get_mcqe(struct ocrdma_dev *dev)
+{
+ struct ocrdma_mcqe *cqe = (struct ocrdma_mcqe *)
+ ((u8 *) dev->mq.cq.va +
+ (dev->mq.cq.tail * sizeof(struct ocrdma_mcqe)));
+
+ if (!(le32_to_cpu(cqe->valid_ae_cmpl_cons) & OCRDMA_MCQE_VALID_MASK))
+ return NULL;
+ return cqe;
+}
+
+static inline void ocrdma_mcq_inc_tail(struct ocrdma_dev *dev)
+{
+ dev->mq.cq.tail = (dev->mq.cq.tail + 1) & (OCRDMA_MQ_CQ_LEN - 1);
+}
+
+static inline struct ocrdma_mqe *ocrdma_get_mqe(struct ocrdma_dev *dev)
+{
+ return (struct ocrdma_mqe *)((u8 *) dev->mq.sq.va +
+ (dev->mq.sq.head *
+ sizeof(struct ocrdma_mqe)));
+}
+
+static inline void ocrdma_mq_inc_head(struct ocrdma_dev *dev)
+{
+ dev->mq.sq.head = (dev->mq.sq.head + 1) & (OCRDMA_MQ_LEN - 1);
+ atomic_inc(&dev->mq.sq.used);
+}
+
+static inline void *ocrdma_get_mqe_rsp(struct ocrdma_dev *dev)
+{
+ return (void *)((u8 *) dev->mq.sq.va +
+ (dev->mqe_ctx.tag * sizeof(struct ocrdma_mqe)));
+}
+
+enum ib_qp_state get_ibqp_state(enum ocrdma_qp_state qps)
+{
+ switch (qps) {
+ case OCRDMA_QPS_RST:
+ return IB_QPS_RESET;
+ case OCRDMA_QPS_INIT:
+ return IB_QPS_INIT;
+ case OCRDMA_QPS_RTR:
+ return IB_QPS_RTR;
+ case OCRDMA_QPS_RTS:
+ return IB_QPS_RTS;
+ case OCRDMA_QPS_SQD:
+ case OCRDMA_QPS_SQ_DRAINING:
+ return IB_QPS_SQD;
+ case OCRDMA_QPS_SQE:
+ return IB_QPS_SQE;
+ case OCRDMA_QPS_ERR:
+ return IB_QPS_ERR;
+ };
+ return IB_QPS_ERR;
+}
+
+enum ocrdma_qp_state get_ocrdma_qp_state(enum ib_qp_state qps)
+{
+ switch (qps) {
+ case IB_QPS_RESET:
+ return OCRDMA_QPS_RST;
+ case IB_QPS_INIT:
+ return OCRDMA_QPS_INIT;
+ case IB_QPS_RTR:
+ return OCRDMA_QPS_RTR;
+ case IB_QPS_RTS:
+ return OCRDMA_QPS_RTS;
+ case IB_QPS_SQD:
+ return OCRDMA_QPS_SQD;
+ case IB_QPS_SQE:
+ return OCRDMA_QPS_SQE;
+ case IB_QPS_ERR:
+ return OCRDMA_QPS_ERR;
+ };
+ return OCRDMA_QPS_ERR;
+}
+
+static int ocrdma_get_mbx_errno(u32 status)
+{
+ int err_num = -EFAULT;
+ u8 mbox_status = (status & OCRDMA_MBX_RSP_STATUS_MASK) >>
+ OCRDMA_MBX_RSP_STATUS_SHIFT;
+ u8 add_status = (status & OCRDMA_MBX_RSP_ASTATUS_MASK) >>
+ OCRDMA_MBX_RSP_ASTATUS_SHIFT;
+
+ switch (mbox_status) {
+ case OCRDMA_MBX_STATUS_OOR:
+ case OCRDMA_MBX_STATUS_MAX_QP_EXCEEDS:
+ err_num = -EAGAIN;
+ break;
+
+ case OCRDMA_MBX_STATUS_INVALID_PD:
+ case OCRDMA_MBX_STATUS_INVALID_CQ:
+ case OCRDMA_MBX_STATUS_INVALID_SRQ_ID:
+ case OCRDMA_MBX_STATUS_INVALID_QP:
+ case OCRDMA_MBX_STATUS_INVALID_CHANGE:
+ case OCRDMA_MBX_STATUS_MTU_EXCEEDS:
+ case OCRDMA_MBX_STATUS_INVALID_RNR_NAK_TIMER:
+ case OCRDMA_MBX_STATUS_PKEY_INDEX_INVALID:
+ case OCRDMA_MBX_STATUS_PKEY_INDEX_EXCEEDS:
+ case OCRDMA_MBX_STATUS_ILLEGAL_FIELD:
+ case OCRDMA_MBX_STATUS_INVALID_PBL_ENTRY:
+ case OCRDMA_MBX_STATUS_INVALID_LKEY:
+ case OCRDMA_MBX_STATUS_INVALID_VA:
+ case OCRDMA_MBX_STATUS_INVALID_LENGTH:
+ case OCRDMA_MBX_STATUS_INVALID_FBO:
+ case OCRDMA_MBX_STATUS_INVALID_ACC_RIGHTS:
+ case OCRDMA_MBX_STATUS_INVALID_PBE_SIZE:
+ case OCRDMA_MBX_STATUS_ATOMIC_OPS_UNSUP:
+ case OCRDMA_MBX_STATUS_SRQ_ERROR:
+ case OCRDMA_MBX_STATUS_SRQ_SIZE_UNDERUNS:
+ err_num = -EINVAL;
+ break;
+
+ case OCRDMA_MBX_STATUS_PD_INUSE:
+ case OCRDMA_MBX_STATUS_QP_BOUND:
+ case OCRDMA_MBX_STATUS_MW_STILL_BOUND:
+ case OCRDMA_MBX_STATUS_MW_BOUND:
+ err_num = -EBUSY;
+ break;
+
+ case OCRDMA_MBX_STATUS_RECVQ_RQE_EXCEEDS:
+ case OCRDMA_MBX_STATUS_SGE_RECV_EXCEEDS:
+ case OCRDMA_MBX_STATUS_RQE_EXCEEDS:
+ case OCRDMA_MBX_STATUS_SRQ_LIMIT_EXCEEDS:
+ case OCRDMA_MBX_STATUS_ORD_EXCEEDS:
+ case OCRDMA_MBX_STATUS_IRD_EXCEEDS:
+ case OCRDMA_MBX_STATUS_SENDQ_WQE_EXCEEDS:
+ case OCRDMA_MBX_STATUS_SGE_SEND_EXCEEDS:
+ case OCRDMA_MBX_STATUS_SGE_WRITE_EXCEEDS:
+ err_num = -ENOBUFS;
+ break;
+
+ case OCRDMA_MBX_STATUS_FAILED:
+ switch (add_status) {
+ case OCRDMA_MBX_ADDI_STATUS_INSUFFICIENT_RESOURCES:
+ err_num = -EAGAIN;
+ break;
+ }
+ default:
+ err_num = -EFAULT;
+ }
+ return err_num;
+}
+
+static int ocrdma_get_mbx_cqe_errno(u16 cqe_status)
+{
+ int err_num = -EINVAL;
+
+ switch (cqe_status) {
+ case OCRDMA_MBX_CQE_STATUS_INSUFFICIENT_PRIVILEDGES:
+ err_num = -EPERM;
+ break;
+ case OCRDMA_MBX_CQE_STATUS_INVALID_PARAMETER:
+ err_num = -EINVAL;
+ break;
+ case OCRDMA_MBX_CQE_STATUS_INSUFFICIENT_RESOURCES:
+ case OCRDMA_MBX_CQE_STATUS_QUEUE_FLUSHING:
+ err_num = -EAGAIN;
+ break;
+ case OCRDMA_MBX_CQE_STATUS_DMA_FAILED:
+ err_num = -EIO;
+ break;
+ }
+ return err_num;
+}
+
+void ocrdma_ring_cq_db(struct ocrdma_dev *dev, u16 cq_id, bool armed,
+ bool solicited, u16 cqe_popped)
+{
+ u32 val = cq_id & OCRDMA_DB_CQ_RING_ID_MASK;
+
+ val |= ((cq_id & OCRDMA_DB_CQ_RING_ID_EXT_MASK) <<
+ OCRDMA_DB_CQ_RING_ID_EXT_MASK_SHIFT);
+
+ if (armed)
+ val |= (1 << OCRDMA_DB_CQ_REARM_SHIFT);
+ if (solicited)
+ val |= (1 << OCRDMA_DB_CQ_SOLICIT_SHIFT);
+ val |= (cqe_popped << OCRDMA_DB_CQ_NUM_POPPED_SHIFT);
+ iowrite32(val, dev->nic_info.db + OCRDMA_DB_CQ_OFFSET);
+}
+
+static void ocrdma_ring_mq_db(struct ocrdma_dev *dev)
+{
+ u32 val = 0;
+
+ val |= dev->mq.sq.id & OCRDMA_MQ_ID_MASK;
+ val |= 1 << OCRDMA_MQ_NUM_MQE_SHIFT;
+ iowrite32(val, dev->nic_info.db + OCRDMA_DB_MQ_OFFSET);
+}
+
+static void ocrdma_ring_eq_db(struct ocrdma_dev *dev, u16 eq_id,
+ bool arm, bool clear_int, u16 num_eqe)
+{
+ u32 val = 0;
+
+ val |= eq_id & OCRDMA_EQ_ID_MASK;
+ val |= ((eq_id & OCRDMA_EQ_ID_EXT_MASK) << OCRDMA_EQ_ID_EXT_MASK_SHIFT);
+ if (arm)
+ val |= (1 << OCRDMA_REARM_SHIFT);
+ if (clear_int)
+ val |= (1 << OCRDMA_EQ_CLR_SHIFT);
+ val |= (1 << OCRDMA_EQ_TYPE_SHIFT);
+ val |= (num_eqe << OCRDMA_NUM_EQE_SHIFT);
+ iowrite32(val, dev->nic_info.db + OCRDMA_DB_EQ_OFFSET);
+}
+
+static void ocrdma_init_mch(struct ocrdma_mbx_hdr *cmd_hdr,
+ u8 opcode, u8 subsys, u32 cmd_len)
+{
+ cmd_hdr->subsys_op = (opcode | (subsys << OCRDMA_MCH_SUBSYS_SHIFT));
+ cmd_hdr->timeout = 20; /* seconds */
+ cmd_hdr->cmd_len = cmd_len - sizeof(struct ocrdma_mbx_hdr);
+}
+
+static void *ocrdma_init_emb_mqe(u8 opcode, u32 cmd_len)
+{
+ struct ocrdma_mqe *mqe;
+
+ mqe = kzalloc(sizeof(struct ocrdma_mqe), GFP_KERNEL);
+ if (!mqe)
+ return NULL;
+ mqe->hdr.spcl_sge_cnt_emb |=
+ (OCRDMA_MQE_EMBEDDED << OCRDMA_MQE_HDR_EMB_SHIFT) &
+ OCRDMA_MQE_HDR_EMB_MASK;
+ mqe->hdr.pyld_len = cmd_len - sizeof(struct ocrdma_mqe_hdr);
+
+ ocrdma_init_mch(&mqe->u.emb_req.mch, opcode, OCRDMA_SUBSYS_ROCE,
+ mqe->hdr.pyld_len);
+ return mqe;
+}
+
+static void ocrdma_free_q(struct ocrdma_dev *dev, struct ocrdma_queue_info *q)
+{
+ dma_free_coherent(&dev->nic_info.pdev->dev, q->size, q->va, q->dma);
+}
+
+static int ocrdma_alloc_q(struct ocrdma_dev *dev,
+ struct ocrdma_queue_info *q, u16 len, u16 entry_size)
+{
+ memset(q, 0, sizeof(*q));
+ q->len = len;
+ q->entry_size = entry_size;
+ q->size = len * entry_size;
+ q->va = dma_alloc_coherent(&dev->nic_info.pdev->dev, q->size,
+ &q->dma, GFP_KERNEL);
+ if (!q->va)
+ return -ENOMEM;
+ memset(q->va, 0, q->size);
+ return 0;
+}
+
+static void ocrdma_build_q_pages(struct ocrdma_pa *q_pa, int cnt,
+ dma_addr_t host_pa, int hw_page_size)
+{
+ int i;
+
+ for (i = 0; i < cnt; i++) {
+ q_pa[i].lo = (u32) (host_pa & 0xffffffff);
+ q_pa[i].hi = (u32) upper_32_bits(host_pa);
+ host_pa += hw_page_size;
+ }
+}
+
+static void ocrdma_assign_eq_vect_gen2(struct ocrdma_dev *dev,
+ struct ocrdma_eq *eq)
+{
+ /* assign vector and update vector id for next EQ */
+ eq->vector = dev->nic_info.msix.start_vector;
+ dev->nic_info.msix.start_vector += 1;
+}
+
+static void ocrdma_free_eq_vect_gen2(struct ocrdma_dev *dev)
+{
+ /* this assumes that EQs are freed in exactly reverse order
+ * as its allocation.
+ */
+ dev->nic_info.msix.start_vector -= 1;
+}
+
+int ocrdma_mbx_delete_q(struct ocrdma_dev *dev, struct ocrdma_queue_info *q,
+ int queue_type)
+{
+ u8 opcode = 0;
+ int status;
+ struct ocrdma_delete_q_req *cmd = dev->mbx_cmd;
+
+ switch (queue_type) {
+ case QTYPE_MCCQ:
+ opcode = OCRDMA_CMD_DELETE_MQ;
+ break;
+ case QTYPE_CQ:
+ opcode = OCRDMA_CMD_DELETE_CQ;
+ break;
+ case QTYPE_EQ:
+ opcode = OCRDMA_CMD_DELETE_EQ;
+ break;
+ default:
+ BUG();
+ }
+ memset(cmd, 0, sizeof(*cmd));
+ ocrdma_init_mch(&cmd->req, opcode, OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
+ cmd->id = q->id;
+
+ status = be_roce_mcc_cmd(dev->nic_info.netdev,
+ cmd, sizeof(*cmd), NULL, NULL);
+ if (!status)
+ q->created = false;
+ return status;
+}
+
+static int ocrdma_mbx_create_eq(struct ocrdma_dev *dev, struct ocrdma_eq *eq)
+{
+ int status;
+ struct ocrdma_create_eq_req *cmd = dev->mbx_cmd;
+ struct ocrdma_create_eq_rsp *rsp = dev->mbx_cmd;
+
+ memset(cmd, 0, sizeof(*cmd));
+ ocrdma_init_mch(&cmd->req, OCRDMA_CMD_CREATE_EQ, OCRDMA_SUBSYS_COMMON,
+ sizeof(*cmd));
+ if (dev->nic_info.dev_family == OCRDMA_GEN2_FAMILY)
+ cmd->req.rsvd_version = 0;
+ else
+ cmd->req.rsvd_version = 2;
+
+ cmd->num_pages = 4;
+ cmd->valid = OCRDMA_CREATE_EQ_VALID;
+ cmd->cnt = 4 << OCRDMA_CREATE_EQ_CNT_SHIFT;
+
+ ocrdma_build_q_pages(&cmd->pa[0], cmd->num_pages, eq->q.dma,
+ PAGE_SIZE_4K);
+ status = be_roce_mcc_cmd(dev->nic_info.netdev, cmd, sizeof(*cmd), NULL,
+ NULL);
+ if (!status) {
+ eq->q.id = rsp->vector_eqid & 0xffff;
+ if (dev->nic_info.dev_family == OCRDMA_GEN2_FAMILY)
+ ocrdma_assign_eq_vect_gen2(dev, eq);
+ else {
+ eq->vector = (rsp->vector_eqid >> 16) & 0xffff;
+ dev->nic_info.msix.start_vector += 1;
+ }
+ eq->q.created = true;
+ }
+ return status;
+}
+
+static int ocrdma_create_eq(struct ocrdma_dev *dev,
+ struct ocrdma_eq *eq, u16 q_len)
+{
+ int status;
+
+ status = ocrdma_alloc_q(dev, &eq->q, OCRDMA_EQ_LEN,
+ sizeof(struct ocrdma_eqe));
+ if (status)
+ return status;
+
+ status = ocrdma_mbx_create_eq(dev, eq);
+ if (status)
+ goto mbx_err;
+ eq->dev = dev;
+ ocrdma_ring_eq_db(dev, eq->q.id, true, true, 0);
+
+ return 0;
+mbx_err:
+ ocrdma_free_q(dev, &eq->q);
+ return status;
+}
+
+static int ocrdma_get_irq(struct ocrdma_dev *dev, struct ocrdma_eq *eq)
+{
+ int irq;
+
+ if (dev->nic_info.intr_mode == BE_INTERRUPT_MODE_INTX)
+ irq = dev->nic_info.pdev->irq;
+ else
+ irq = dev->nic_info.msix.vector_list[eq->vector];
+ return irq;
+}
+
+static void _ocrdma_destroy_eq(struct ocrdma_dev *dev, struct ocrdma_eq *eq)
+{
+ if (eq->q.created) {
+ ocrdma_mbx_delete_q(dev, &eq->q, QTYPE_EQ);
+ if (dev->nic_info.dev_family == OCRDMA_GEN2_FAMILY)
+ ocrdma_free_eq_vect_gen2(dev);
+ ocrdma_free_q(dev, &eq->q);
+ }
+}
+
+static void ocrdma_destroy_eq(struct ocrdma_dev *dev, struct ocrdma_eq *eq)
+{
+ int irq;
+
+ /* disarm EQ so that interrupts are not generated
+ * during freeing and EQ delete is in progress.
+ */
+ ocrdma_ring_eq_db(dev, eq->q.id, false, false, 0);
+
+ irq = ocrdma_get_irq(dev, eq);
+ free_irq(irq, eq);
+ _ocrdma_destroy_eq(dev, eq);
+}
+
+static void ocrdma_destroy_qp_eqs(struct ocrdma_dev *dev)
+{
+ int i;
+
+ /* deallocate the data path eqs */
+ for (i = 0; i < dev->eq_cnt; i++)
+ ocrdma_destroy_eq(dev, &dev->qp_eq_tbl[i]);
+}
+
+int ocrdma_mbx_mq_cq_create(struct ocrdma_dev *dev,
+ struct ocrdma_queue_info *cq,
+ struct ocrdma_queue_info *eq)
+{
+ struct ocrdma_create_cq_cmd *cmd = dev->mbx_cmd;
+ struct ocrdma_create_cq_cmd_rsp *rsp = dev->mbx_cmd;
+ int status;
+
+ memset(cmd, 0, sizeof(*cmd));
+ ocrdma_init_mch(&cmd->req, OCRDMA_CMD_CREATE_CQ,
+ OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
+
+ cmd->pgsz_pgcnt = PAGES_4K_SPANNED(cq->va, cq->size);
+ cmd->ev_cnt_flags = OCRDMA_CREATE_CQ_DEF_FLAGS;
+ cmd->eqn = (eq->id << OCRDMA_CREATE_CQ_EQID_SHIFT);
+
+ ocrdma_build_q_pages(&cmd->pa[0], cmd->pgsz_pgcnt,
+ cq->dma, PAGE_SIZE_4K);
+ status = be_roce_mcc_cmd(dev->nic_info.netdev,
+ cmd, sizeof(*cmd), NULL, NULL);
+ if (!status) {
+ cq->id = (rsp->cq_id & OCRDMA_CREATE_CQ_RSP_CQ_ID_MASK);
+ cq->created = true;
+ }
+ return status;
+}
+
+static u32 ocrdma_encoded_q_len(int q_len)
+{
+ u32 len_encoded = fls(q_len); /* log2(len) + 1 */
+
+ if (len_encoded == 16)
+ len_encoded = 0;
+ return len_encoded;
+}
+
+static int ocrdma_mbx_create_mq(struct ocrdma_dev *dev,
+ struct ocrdma_queue_info *mq,
+ struct ocrdma_queue_info *cq)
+{
+ int num_pages, status;
+ struct ocrdma_create_mq_req *cmd = dev->mbx_cmd;
+ struct ocrdma_create_mq_rsp *rsp = dev->mbx_cmd;
+ struct ocrdma_pa *pa;
+
+ memset(cmd, 0, sizeof(*cmd));
+ num_pages = PAGES_4K_SPANNED(mq->va, mq->size);
+
+ if (dev->nic_info.dev_family == OCRDMA_GEN2_FAMILY) {
+ ocrdma_init_mch(&cmd->req, OCRDMA_CMD_CREATE_MQ,
+ OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
+ cmd->v0.pages = num_pages;
+ cmd->v0.async_cqid_valid = OCRDMA_CREATE_MQ_ASYNC_CQ_VALID;
+ cmd->v0.async_cqid_valid = (cq->id << 1);
+ cmd->v0.cqid_ringsize |= (ocrdma_encoded_q_len(mq->len) <<
+ OCRDMA_CREATE_MQ_RING_SIZE_SHIFT);
+ cmd->v0.cqid_ringsize |=
+ (cq->id << OCRDMA_CREATE_MQ_V0_CQ_ID_SHIFT);
+ cmd->v0.valid = OCRDMA_CREATE_MQ_VALID;
+ pa = &cmd->v0.pa[0];
+ } else {
+ ocrdma_init_mch(&cmd->req, OCRDMA_CMD_CREATE_MQ_EXT,
+ OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
+ cmd->req.rsvd_version = 1;
+ cmd->v1.cqid_pages = num_pages;
+ cmd->v1.cqid_pages |= (cq->id << OCRDMA_CREATE_MQ_CQ_ID_SHIFT);
+ cmd->v1.async_cqid_valid = OCRDMA_CREATE_MQ_ASYNC_CQ_VALID;
+ cmd->v1.async_event_bitmap = Bit(20);
+ cmd->v1.async_cqid_ringsize = cq->id;
+ cmd->v1.async_cqid_ringsize |= (ocrdma_encoded_q_len(mq->len) <<
+ OCRDMA_CREATE_MQ_RING_SIZE_SHIFT);
+ cmd->v1.valid = OCRDMA_CREATE_MQ_VALID;
+ pa = &cmd->v1.pa[0];
+ }
+ ocrdma_build_q_pages(pa, num_pages, mq->dma, PAGE_SIZE_4K);
+ status = be_roce_mcc_cmd(dev->nic_info.netdev,
+ cmd, sizeof(*cmd), NULL, NULL);
+ if (!status) {
+ mq->id = rsp->id;
+ mq->created = true;
+ }
+ return status;
+}
+
+static int ocrdma_create_mq(struct ocrdma_dev *dev)
+{
+ int status;
+
+ /* Alloc completion queue for Mailbox queue */
+ status = ocrdma_alloc_q(dev, &dev->mq.cq, OCRDMA_MQ_CQ_LEN,
+ sizeof(struct ocrdma_mcqe));
+ if (status)
+ goto alloc_err;
+
+ status = ocrdma_mbx_mq_cq_create(dev, &dev->mq.cq, &dev->meq.q);
+ if (status)
+ goto mbx_cq_free;
+
+ memset(&dev->mqe_ctx, 0, sizeof(dev->mqe_ctx));
+ init_waitqueue_head(&dev->mqe_ctx.cmd_wait);
+ mutex_init(&dev->mqe_ctx.lock);
+
+ /* Alloc Mailbox queue */
+ status = ocrdma_alloc_q(dev, &dev->mq.sq, OCRDMA_MQ_LEN,
+ sizeof(struct ocrdma_mqe));
+ if (status)
+ goto mbx_cq_destroy;
+ status = ocrdma_mbx_create_mq(dev, &dev->mq.sq, &dev->mq.cq);
+ if (status)
+ goto mbx_q_free;
+ ocrdma_ring_cq_db(dev, dev->mq.cq.id, true, false, 0);
+ return 0;
+
+mbx_q_free:
+ ocrdma_free_q(dev, &dev->mq.sq);
+mbx_cq_destroy:
+ ocrdma_mbx_delete_q(dev, &dev->mq.cq, QTYPE_CQ);
+mbx_cq_free:
+ ocrdma_free_q(dev, &dev->mq.cq);
+alloc_err:
+ return status;
+}
+
+static void ocrdma_destroy_mq(struct ocrdma_dev *dev)
+{
+ struct ocrdma_queue_info *mbxq, *cq;
+
+ /* mqe_ctx lock synchronizes with any other pending cmds. */
+ mutex_lock(&dev->mqe_ctx.lock);
+ mbxq = &dev->mq.sq;
+ if (mbxq->created) {
+ ocrdma_mbx_delete_q(dev, mbxq, QTYPE_MCCQ);
+ ocrdma_free_q(dev, mbxq);
+ }
+ mutex_unlock(&dev->mqe_ctx.lock);
+
+ cq = &dev->mq.cq;
+ if (cq->created) {
+ ocrdma_mbx_delete_q(dev, cq, QTYPE_CQ);
+ ocrdma_free_q(dev, cq);
+ }
+}
+
+static void ocrdma_process_qpcat_error(struct ocrdma_dev *dev,
+ struct ocrdma_qp *qp)
+{
+ enum ib_qp_state new_ib_qps = IB_QPS_ERR;
+ enum ib_qp_state old_ib_qps;
+
+ if (qp == NULL)
+ BUG();
+ ocrdma_qp_state_machine(qp, new_ib_qps, &old_ib_qps);
+}
+
+static void ocrdma_dispatch_ibevent(struct ocrdma_dev *dev,
+ struct ocrdma_ae_mcqe *cqe)
+{
+ struct ocrdma_qp *qp = NULL;
+ struct ocrdma_cq *cq = NULL;
+ struct ib_event ib_evt = { 0 };
+ int cq_event = 0;
+ int qp_event = 1;
+ int srq_event = 0;
+ int dev_event = 0;
+ int type = (cqe->valid_ae_event & OCRDMA_AE_MCQE_EVENT_TYPE_MASK) >>
+ OCRDMA_AE_MCQE_EVENT_TYPE_SHIFT;
+
+ if (cqe->qpvalid_qpid & OCRDMA_AE_MCQE_QPVALID)
+ qp = dev->qp_tbl[cqe->qpvalid_qpid & OCRDMA_AE_MCQE_QPID_MASK];
+ if (cqe->cqvalid_cqid & OCRDMA_AE_MCQE_CQVALID)
+ cq = dev->cq_tbl[cqe->cqvalid_cqid & OCRDMA_AE_MCQE_CQID_MASK];
+
+ switch (type) {
+ case OCRDMA_CQ_ERROR:
+ ib_evt.element.cq = &cq->ibcq;
+ ib_evt.event = IB_EVENT_CQ_ERR;
+ cq_event = 1;
+ qp_event = 0;
+ break;
+ case OCRDMA_CQ_OVERRUN_ERROR:
+ ib_evt.element.cq = &cq->ibcq;
+ ib_evt.event = IB_EVENT_CQ_ERR;
+ break;
+ case OCRDMA_CQ_QPCAT_ERROR:
+ ib_evt.element.qp = &qp->ibqp;
+ ib_evt.event = IB_EVENT_QP_FATAL;
+ ocrdma_process_qpcat_error(dev, qp);
+ break;
+ case OCRDMA_QP_ACCESS_ERROR:
+ ib_evt.element.qp = &qp->ibqp;
+ ib_evt.event = IB_EVENT_QP_ACCESS_ERR;
+ break;
+ case OCRDMA_QP_COMM_EST_EVENT:
+ ib_evt.element.qp = &qp->ibqp;
+ ib_evt.event = IB_EVENT_COMM_EST;
+ break;
+ case OCRDMA_SQ_DRAINED_EVENT:
+ ib_evt.element.qp = &qp->ibqp;
+ ib_evt.event = IB_EVENT_SQ_DRAINED;
+ break;
+ case OCRDMA_DEVICE_FATAL_EVENT:
+ ib_evt.element.port_num = 1;
+ ib_evt.event = IB_EVENT_DEVICE_FATAL;
+ qp_event = 0;
+ dev_event = 1;
+ break;
+ case OCRDMA_SRQCAT_ERROR:
+ ib_evt.element.srq = &qp->srq->ibsrq;
+ ib_evt.event = IB_EVENT_SRQ_ERR;
+ srq_event = 1;
+ qp_event = 0;
+ break;
+ case OCRDMA_SRQ_LIMIT_EVENT:
+ ib_evt.element.srq = &qp->srq->ibsrq;
+ ib_evt.event = IB_EVENT_QP_LAST_WQE_REACHED;
+ srq_event = 1;
+ qp_event = 0;
+ break;
+ case OCRDMA_QP_LAST_WQE_EVENT:
+ ib_evt.element.qp = &qp->ibqp;
+ ib_evt.event = IB_EVENT_QP_LAST_WQE_REACHED;
+ break;
+ default:
+ cq_event = 0;
+ qp_event = 0;
+ srq_event = 0;
+ dev_event = 0;
+ ocrdma_err("%s() unknown type=0x%x\n", __func__, type);
+ break;
+ }
+
+ if (qp_event) {
+ if (qp->ibqp.event_handler)
+ qp->ibqp.event_handler(&ib_evt, qp->ibqp.qp_context);
+ } else if (cq_event) {
+ if (cq->ibcq.event_handler)
+ cq->ibcq.event_handler(&ib_evt, cq->ibcq.cq_context);
+ } else if (srq_event) {
+ if (qp->srq->ibsrq.event_handler)
+ qp->srq->ibsrq.event_handler(&ib_evt,
+ qp->srq->ibsrq.
+ srq_context);
+ } else if (dev_event)
+ ib_dispatch_event(&ib_evt);
+
+}
+
+static void ocrdma_process_acqe(struct ocrdma_dev *dev, void *ae_cqe)
+{
+ /* async CQE processing */
+ struct ocrdma_ae_mcqe *cqe = ae_cqe;
+ u32 evt_code = (cqe->valid_ae_event & OCRDMA_AE_MCQE_EVENT_CODE_MASK) >>
+ OCRDMA_AE_MCQE_EVENT_CODE_SHIFT;
+
+ if (evt_code == OCRDMA_ASYNC_EVE_CODE)
+ ocrdma_dispatch_ibevent(dev, cqe);
+ else
+ ocrdma_err("%s(%d) invalid evt code=0x%x\n",
+ __func__, dev->id, evt_code);
+}
+
+static void ocrdma_process_mcqe(struct ocrdma_dev *dev, struct ocrdma_mcqe *cqe)
+{
+ if (dev->mqe_ctx.tag == cqe->tag_lo && dev->mqe_ctx.cmd_done == false) {
+ dev->mqe_ctx.cqe_status = (cqe->status &
+ OCRDMA_MCQE_STATUS_MASK) >> OCRDMA_MCQE_STATUS_SHIFT;
+ dev->mqe_ctx.ext_status =
+ (cqe->status & OCRDMA_MCQE_ESTATUS_MASK)
+ >> OCRDMA_MCQE_ESTATUS_SHIFT;
+ dev->mqe_ctx.cmd_done = true;
+ wake_up(&dev->mqe_ctx.cmd_wait);
+ } else
+ ocrdma_err("%s() cqe for invalid tag0x%x.expected=0x%x\n",
+ __func__, cqe->tag_lo, dev->mqe_ctx.tag);
+}
+
+static int ocrdma_mq_cq_handler(struct ocrdma_dev *dev, u16 cq_id)
+{
+ u16 cqe_popped = 0;
+ struct ocrdma_mcqe *cqe;
+
+ while (1) {
+ cqe = ocrdma_get_mcqe(dev);
+ if (cqe == NULL)
+ break;
+ ocrdma_le32_to_cpu(cqe, sizeof(*cqe));
+ cqe_popped += 1;
+ if (cqe->valid_ae_cmpl_cons & OCRDMA_MCQE_AE_MASK)
+ ocrdma_process_acqe(dev, cqe);
+ else if (cqe->valid_ae_cmpl_cons & OCRDMA_MCQE_CMPL_MASK)
+ ocrdma_process_mcqe(dev, cqe);
+ else
+ ocrdma_err("%s() cqe->compl is not set.\n", __func__);
+ memset(cqe, 0, sizeof(struct ocrdma_mcqe));
+ ocrdma_mcq_inc_tail(dev);
+ }
+ ocrdma_ring_cq_db(dev, dev->mq.cq.id, true, false, cqe_popped);
+ return 0;
+}
+
+static void ocrdma_qp_buddy_cq_handler(struct ocrdma_dev *dev,
+ struct ocrdma_cq *cq)
+{
+ unsigned long flags;
+ struct ocrdma_qp *qp;
+ bool buddy_cq_found = false;
+ /* Go through list of QPs in error state which are using this CQ
+ * and invoke its callback handler to trigger CQE processing for
+ * error/flushed CQE. It is rare to find more than few entries in
+ * this list as most consumers stops after getting error CQE.
+ * List is traversed only once when a matching buddy cq found for a QP.
+ */
+ spin_lock_irqsave(&dev->flush_q_lock, flags);
+ list_for_each_entry(qp, &cq->sq_head, sq_entry) {
+ if (qp->srq)
+ continue;
+ /* if wq and rq share the same cq, than comp_handler
+ * is already invoked.
+ */
+ if (qp->sq_cq == qp->rq_cq)
+ continue;
+ /* if completion came on sq, rq's cq is buddy cq.
+ * if completion came on rq, sq's cq is buddy cq.
+ */
+ if (qp->sq_cq == cq)
+ cq = qp->rq_cq;
+ else
+ cq = qp->sq_cq;
+ buddy_cq_found = true;
+ break;
+ }
+ spin_unlock_irqrestore(&dev->flush_q_lock, flags);
+ if (buddy_cq_found == false)
+ return;
+ if (cq->ibcq.comp_handler) {
+ spin_lock_irqsave(&cq->comp_handler_lock, flags);
+ (*cq->ibcq.comp_handler) (&cq->ibcq, cq->ibcq.cq_context);
+ spin_unlock_irqrestore(&cq->comp_handler_lock, flags);
+ }
+}
+
+static void ocrdma_qp_cq_handler(struct ocrdma_dev *dev, u16 cq_idx)
+{
+ unsigned long flags;
+ struct ocrdma_cq *cq;
+
+ if (cq_idx >= OCRDMA_MAX_CQ)
+ BUG();
+
+ cq = dev->cq_tbl[cq_idx];
+ if (cq == NULL) {
+ ocrdma_err("%s%d invalid id=0x%x\n", __func__, dev->id, cq_idx);
+ return;
+ }
+ spin_lock_irqsave(&cq->cq_lock, flags);
+ cq->armed = false;
+ cq->solicited = false;
+ spin_unlock_irqrestore(&cq->cq_lock, flags);
+
+ ocrdma_ring_cq_db(dev, cq->id, false, false, 0);
+
+ if (cq->ibcq.comp_handler) {
+ spin_lock_irqsave(&cq->comp_handler_lock, flags);
+ (*cq->ibcq.comp_handler) (&cq->ibcq, cq->ibcq.cq_context);
+ spin_unlock_irqrestore(&cq->comp_handler_lock, flags);
+ }
+ ocrdma_qp_buddy_cq_handler(dev, cq);
+}
+
+static void ocrdma_cq_handler(struct ocrdma_dev *dev, u16 cq_id)
+{
+ /* process the MQ-CQE. */
+ if (cq_id == dev->mq.cq.id)
+ ocrdma_mq_cq_handler(dev, cq_id);
+ else
+ ocrdma_qp_cq_handler(dev, cq_id);
+}
+
+static irqreturn_t ocrdma_irq_handler(int irq, void *handle)
+{
+ struct ocrdma_eq *eq = handle;
+ struct ocrdma_dev *dev = eq->dev;
+ struct ocrdma_eqe eqe;
+ struct ocrdma_eqe *ptr;
+ u16 eqe_popped = 0;
+ u16 cq_id;
+ while (1) {
+ ptr = ocrdma_get_eqe(eq);
+ eqe = *ptr;
+ ocrdma_le32_to_cpu(&eqe, sizeof(eqe));
+ if ((eqe.id_valid & OCRDMA_EQE_VALID_MASK) == 0)
+ break;
+ eqe_popped += 1;
+ ptr->id_valid = 0;
+ /* check whether its CQE or not. */
+ if ((eqe.id_valid & OCRDMA_EQE_FOR_CQE_MASK) == 0) {
+ cq_id = eqe.id_valid >> OCRDMA_EQE_RESOURCE_ID_SHIFT;
+ ocrdma_cq_handler(dev, cq_id);
+ }
+ ocrdma_eq_inc_tail(eq);
+ }
+ ocrdma_ring_eq_db(dev, eq->q.id, true, true, eqe_popped);
+ /* Ring EQ doorbell with num_popped to 0 to enable interrupts again. */
+ if (dev->nic_info.intr_mode == BE_INTERRUPT_MODE_INTX)
+ ocrdma_ring_eq_db(dev, eq->q.id, true, true, 0);
+ return IRQ_HANDLED;
+}
+
+static void ocrdma_post_mqe(struct ocrdma_dev *dev, struct ocrdma_mqe *cmd)
+{
+ struct ocrdma_mqe *mqe;
+
+ dev->mqe_ctx.tag = dev->mq.sq.head;
+ dev->mqe_ctx.cmd_done = false;
+ mqe = ocrdma_get_mqe(dev);
+ cmd->hdr.tag_lo = dev->mq.sq.head;
+ ocrdma_copy_cpu_to_le32(mqe, cmd, sizeof(*mqe));
+ /* make sure descriptor is written before ringing doorbell */
+ wmb();
+ ocrdma_mq_inc_head(dev);
+ ocrdma_ring_mq_db(dev);
+}
+
+static int ocrdma_wait_mqe_cmpl(struct ocrdma_dev *dev)
+{
+ long status;
+ /* 30 sec timeout */
+ status = wait_event_timeout(dev->mqe_ctx.cmd_wait,
+ (dev->mqe_ctx.cmd_done != false),
+ msecs_to_jiffies(30000));
+ if (status)
+ return 0;
+ else
+ return -1;
+}
+
+/* issue a mailbox command on the MQ */
+static int ocrdma_mbx_cmd(struct ocrdma_dev *dev, struct ocrdma_mqe *mqe)
+{
+ int status = 0;
+ u16 cqe_status, ext_status;
+ struct ocrdma_mqe *rsp;
+
+ mutex_lock(&dev->mqe_ctx.lock);
+ ocrdma_post_mqe(dev, mqe);
+ status = ocrdma_wait_mqe_cmpl(dev);
+ if (status)
+ goto mbx_err;
+ cqe_status = dev->mqe_ctx.cqe_status;
+ ext_status = dev->mqe_ctx.ext_status;
+ rsp = ocrdma_get_mqe_rsp(dev);
+ ocrdma_copy_le32_to_cpu(mqe, rsp, (sizeof(*mqe)));
+ if (cqe_status || ext_status) {
+ ocrdma_err
+ ("%s() opcode=0x%x, cqe_status=0x%x, ext_status=0x%x\n",
+ __func__,
+ (rsp->u.rsp.subsys_op & OCRDMA_MBX_RSP_OPCODE_MASK) >>
+ OCRDMA_MBX_RSP_OPCODE_SHIFT, cqe_status, ext_status);
+ status = ocrdma_get_mbx_cqe_errno(cqe_status);
+ goto mbx_err;
+ }
+ if (mqe->u.rsp.status & OCRDMA_MBX_RSP_STATUS_MASK)
+ status = ocrdma_get_mbx_errno(mqe->u.rsp.status);
+mbx_err:
+ mutex_unlock(&dev->mqe_ctx.lock);
+ return status;
+}
+
+static void ocrdma_get_attr(struct ocrdma_dev *dev,
+ struct ocrdma_dev_attr *attr,
+ struct ocrdma_mbx_query_config *rsp)
+{
+ int max_q_mem;
+
+ attr->max_pd =
+ (rsp->max_pd_ca_ack_delay & OCRDMA_MBX_QUERY_CFG_MAX_PD_MASK) >>
+ OCRDMA_MBX_QUERY_CFG_MAX_PD_SHIFT;
+ attr->max_qp =
+ (rsp->qp_srq_cq_ird_ord & OCRDMA_MBX_QUERY_CFG_MAX_QP_MASK) >>
+ OCRDMA_MBX_QUERY_CFG_MAX_QP_SHIFT;
+ attr->max_send_sge = ((rsp->max_write_send_sge &
+ OCRDMA_MBX_QUERY_CFG_MAX_SEND_SGE_MASK) >>
+ OCRDMA_MBX_QUERY_CFG_MAX_SEND_SGE_SHIFT);
+ attr->max_recv_sge = (rsp->max_write_send_sge &
+ OCRDMA_MBX_QUERY_CFG_MAX_SEND_SGE_MASK) >>
+ OCRDMA_MBX_QUERY_CFG_MAX_SEND_SGE_SHIFT;
+ attr->max_ord_per_qp = (rsp->max_ird_ord_per_qp &
+ OCRDMA_MBX_QUERY_CFG_MAX_ORD_PER_QP_MASK) >>
+ OCRDMA_MBX_QUERY_CFG_MAX_ORD_PER_QP_SHIFT;
+ attr->max_ird_per_qp = (rsp->max_ird_ord_per_qp &
+ OCRDMA_MBX_QUERY_CFG_MAX_IRD_PER_QP_MASK) >>
+ OCRDMA_MBX_QUERY_CFG_MAX_IRD_PER_QP_SHIFT;
+ attr->cq_overflow_detect = (rsp->qp_srq_cq_ird_ord &
+ OCRDMA_MBX_QUERY_CFG_CQ_OVERFLOW_MASK) >>
+ OCRDMA_MBX_QUERY_CFG_CQ_OVERFLOW_SHIFT;
+ attr->srq_supported = (rsp->qp_srq_cq_ird_ord &
+ OCRDMA_MBX_QUERY_CFG_SRQ_SUPPORTED_MASK) >>
+ OCRDMA_MBX_QUERY_CFG_SRQ_SUPPORTED_SHIFT;
+ attr->local_ca_ack_delay = (rsp->max_pd_ca_ack_delay &
+ OCRDMA_MBX_QUERY_CFG_CA_ACK_DELAY_MASK) >>
+ OCRDMA_MBX_QUERY_CFG_CA_ACK_DELAY_SHIFT;
+ attr->max_mr = rsp->max_mr;
+ attr->max_mr_size = ~0ull;
+ attr->max_fmr = 0;
+ attr->max_pages_per_frmr = rsp->max_pages_per_frmr;
+ attr->max_num_mr_pbl = rsp->max_num_mr_pbl;
+ attr->max_cqe = rsp->max_cq_cqes_per_cq &
+ OCRDMA_MBX_QUERY_CFG_MAX_CQES_PER_CQ_MASK;
+ attr->wqe_size = ((rsp->wqe_rqe_stride_max_dpp_cqs &
+ OCRDMA_MBX_QUERY_CFG_MAX_WQE_SIZE_MASK) >>
+ OCRDMA_MBX_QUERY_CFG_MAX_WQE_SIZE_OFFSET) *
+ OCRDMA_WQE_STRIDE;
+ attr->rqe_size = ((rsp->wqe_rqe_stride_max_dpp_cqs &
+ OCRDMA_MBX_QUERY_CFG_MAX_RQE_SIZE_MASK) >>
+ OCRDMA_MBX_QUERY_CFG_MAX_RQE_SIZE_OFFSET) *
+ OCRDMA_WQE_STRIDE;
+ attr->max_inline_data =
+ attr->wqe_size - (sizeof(struct ocrdma_hdr_wqe) +
+ sizeof(struct ocrdma_sge));
+ max_q_mem = OCRDMA_Q_PAGE_BASE_SIZE << (OCRDMA_MAX_Q_PAGE_SIZE_CNT - 1);
+ /* hw can queue one less then the configured size,
+ * so publish less by one to stack.
+ */
+ if (dev->nic_info.dev_family == OCRDMA_GEN2_FAMILY) {
+ dev->attr.max_wqe = max_q_mem / dev->attr.wqe_size;
+ attr->ird = 1;
+ attr->ird_page_size = OCRDMA_MIN_Q_PAGE_SIZE;
+ attr->num_ird_pages = MAX_OCRDMA_IRD_PAGES;
+ } else
+ dev->attr.max_wqe = (max_q_mem / dev->attr.wqe_size) - 1;
+ dev->attr.max_rqe = (max_q_mem / dev->attr.rqe_size) - 1;
+}
+
+static int ocrdma_check_fw_config(struct ocrdma_dev *dev,
+ struct ocrdma_fw_conf_rsp *conf)
+{
+ u32 fn_mode;
+
+ fn_mode = conf->fn_mode & OCRDMA_FN_MODE_RDMA;
+ if (fn_mode != OCRDMA_FN_MODE_RDMA)
+ return -EINVAL;
+ dev->base_eqid = conf->base_eqid;
+ dev->max_eq = conf->max_eq;
+ dev->attr.max_cq = OCRDMA_MAX_CQ - 1;
+ return 0;
+}
+
+/* can be issued only during init time. */
+static int ocrdma_mbx_query_fw_ver(struct ocrdma_dev *dev)
+{
+ int status = -ENOMEM;
+ struct ocrdma_mqe *cmd;
+ struct ocrdma_fw_ver_rsp *rsp;
+
+ cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_GET_FW_VER, sizeof(*cmd));
+ if (!cmd)
+ return -ENOMEM;
+ ocrdma_init_mch((struct ocrdma_mbx_hdr *)&cmd->u.cmd[0],
+ OCRDMA_CMD_GET_FW_VER,
+ OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
+
+ status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
+ if (status)
+ goto mbx_err;
+ rsp = (struct ocrdma_fw_ver_rsp *)cmd;
+ memset(&dev->attr.fw_ver[0], 0, sizeof(dev->attr.fw_ver));
+ memcpy(&dev->attr.fw_ver[0], &rsp->running_ver[0],
+ sizeof(rsp->running_ver));
+ ocrdma_le32_to_cpu(dev->attr.fw_ver, sizeof(rsp->running_ver));
+mbx_err:
+ kfree(cmd);
+ return status;
+}
+
+/* can be issued only during init time. */
+static int ocrdma_mbx_query_fw_config(struct ocrdma_dev *dev)
+{
+ int status = -ENOMEM;
+ struct ocrdma_mqe *cmd;
+ struct ocrdma_fw_conf_rsp *rsp;
+
+ cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_GET_FW_CONFIG, sizeof(*cmd));
+ if (!cmd)
+ return -ENOMEM;
+ ocrdma_init_mch((struct ocrdma_mbx_hdr *)&cmd->u.cmd[0],
+ OCRDMA_CMD_GET_FW_CONFIG,
+ OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
+ status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
+ if (status)
+ goto mbx_err;
+ rsp = (struct ocrdma_fw_conf_rsp *)cmd;
+ status = ocrdma_check_fw_config(dev, rsp);
+mbx_err:
+ kfree(cmd);
+ return status;
+}
+
+static int ocrdma_mbx_query_dev(struct ocrdma_dev *dev)
+{
+ int status = -ENOMEM;
+ struct ocrdma_mbx_query_config *rsp;
+ struct ocrdma_mqe *cmd;
+
+ cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_QUERY_CONFIG, sizeof(*cmd));
+ if (!cmd)
+ return status;
+ status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
+ if (status)
+ goto mbx_err;
+ rsp = (struct ocrdma_mbx_query_config *)cmd;
+ ocrdma_get_attr(dev, &dev->attr, rsp);
+mbx_err:
+ kfree(cmd);
+ return status;
+}
+
+int ocrdma_mbx_alloc_pd(struct ocrdma_dev *dev, struct ocrdma_pd *pd)
+{
+ int status = -ENOMEM;
+ struct ocrdma_alloc_pd *cmd;
+ struct ocrdma_alloc_pd_rsp *rsp;
+
+ cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_ALLOC_PD, sizeof(*cmd));
+ if (!cmd)
+ return status;
+ if (pd->dpp_enabled)
+ cmd->enable_dpp_rsvd |= OCRDMA_ALLOC_PD_ENABLE_DPP;
+ status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
+ if (status)
+ goto mbx_err;
+ rsp = (struct ocrdma_alloc_pd_rsp *)cmd;
+ pd->id = rsp->dpp_page_pdid & OCRDMA_ALLOC_PD_RSP_PDID_MASK;
+ if (rsp->dpp_page_pdid & OCRDMA_ALLOC_PD_RSP_DPP) {
+ pd->dpp_enabled = true;
+ pd->dpp_page = rsp->dpp_page_pdid >>
+ OCRDMA_ALLOC_PD_RSP_DPP_PAGE_SHIFT;
+ } else {
+ pd->dpp_enabled = false;
+ pd->num_dpp_qp = 0;
+ }
+mbx_err:
+ kfree(cmd);
+ return status;
+}
+
+int ocrdma_mbx_dealloc_pd(struct ocrdma_dev *dev, struct ocrdma_pd *pd)
+{
+ int status = -ENOMEM;
+ struct ocrdma_dealloc_pd *cmd;
+
+ cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DEALLOC_PD, sizeof(*cmd));
+ if (!cmd)
+ return status;
+ cmd->id = pd->id;
+ status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
+ kfree(cmd);
+ return status;
+}
+
+static int ocrdma_build_q_conf(u32 *num_entries, int entry_size,
+ int *num_pages, int *page_size)
+{
+ int i;
+ int mem_size;
+
+ *num_entries = roundup_pow_of_two(*num_entries);
+ mem_size = *num_entries * entry_size;
+ /* find the possible lowest possible multiplier */
+ for (i = 0; i < OCRDMA_MAX_Q_PAGE_SIZE_CNT; i++) {
+ if (mem_size <= (OCRDMA_Q_PAGE_BASE_SIZE << i))
+ break;
+ }
+ if (i >= OCRDMA_MAX_Q_PAGE_SIZE_CNT)
+ return -EINVAL;
+ mem_size = roundup(mem_size,
+ ((OCRDMA_Q_PAGE_BASE_SIZE << i) / OCRDMA_MAX_Q_PAGES));
+ *num_pages =
+ mem_size / ((OCRDMA_Q_PAGE_BASE_SIZE << i) / OCRDMA_MAX_Q_PAGES);
+ *page_size = ((OCRDMA_Q_PAGE_BASE_SIZE << i) / OCRDMA_MAX_Q_PAGES);
+ *num_entries = mem_size / entry_size;
+ return 0;
+}
+
+static int ocrdma_mbx_create_ah_tbl(struct ocrdma_dev *dev)
+{
+ int i ;
+ int status = 0;
+ int max_ah;
+ struct ocrdma_create_ah_tbl *cmd;
+ struct ocrdma_create_ah_tbl_rsp *rsp;
+ struct pci_dev *pdev = dev->nic_info.pdev;
+ dma_addr_t pa;
+ struct ocrdma_pbe *pbes;
+
+ cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_CREATE_AH_TBL, sizeof(*cmd));
+ if (!cmd)
+ return status;
+
+ max_ah = OCRDMA_MAX_AH;
+ dev->av_tbl.size = sizeof(struct ocrdma_av) * max_ah;
+
+ /* number of PBEs in PBL */
+ cmd->ah_conf = (OCRDMA_AH_TBL_PAGES <<
+ OCRDMA_CREATE_AH_NUM_PAGES_SHIFT) &
+ OCRDMA_CREATE_AH_NUM_PAGES_MASK;
+
+ /* page size */
+ for (i = 0; i < OCRDMA_MAX_Q_PAGE_SIZE_CNT; i++) {
+ if (PAGE_SIZE == (OCRDMA_MIN_Q_PAGE_SIZE << i))
+ break;
+ }
+ cmd->ah_conf |= (i << OCRDMA_CREATE_AH_PAGE_SIZE_SHIFT) &
+ OCRDMA_CREATE_AH_PAGE_SIZE_MASK;
+
+ /* ah_entry size */
+ cmd->ah_conf |= (sizeof(struct ocrdma_av) <<
+ OCRDMA_CREATE_AH_ENTRY_SIZE_SHIFT) &
+ OCRDMA_CREATE_AH_ENTRY_SIZE_MASK;
+
+ dev->av_tbl.pbl.va = dma_alloc_coherent(&pdev->dev, PAGE_SIZE,
+ &dev->av_tbl.pbl.pa,
+ GFP_KERNEL);
+ if (dev->av_tbl.pbl.va == NULL)
+ goto mem_err;
+
+ dev->av_tbl.va = dma_alloc_coherent(&pdev->dev, dev->av_tbl.size,
+ &pa, GFP_KERNEL);
+ if (dev->av_tbl.va == NULL)
+ goto mem_err_ah;
+ dev->av_tbl.pa = pa;
+ dev->av_tbl.num_ah = max_ah;
+ memset(dev->av_tbl.va, 0, dev->av_tbl.size);
+
+ pbes = (struct ocrdma_pbe *)dev->av_tbl.pbl.va;
+ for (i = 0; i < dev->av_tbl.size / OCRDMA_MIN_Q_PAGE_SIZE; i++) {
+ pbes[i].pa_lo = (u32) (pa & 0xffffffff);
+ pbes[i].pa_hi = (u32) upper_32_bits(pa);
+ pa += PAGE_SIZE;
+ }
+ cmd->tbl_addr[0].lo = (u32)(dev->av_tbl.pbl.pa & 0xFFFFFFFF);
+ cmd->tbl_addr[0].hi = (u32)upper_32_bits(dev->av_tbl.pbl.pa);
+ status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
+ if (status)
+ goto mbx_err;
+ rsp = (struct ocrdma_create_ah_tbl_rsp *)cmd;
+ dev->av_tbl.ahid = rsp->ahid & 0xFFFF;
+ kfree(cmd);
+ return 0;
+
+mbx_err:
+ dma_free_coherent(&pdev->dev, dev->av_tbl.size, dev->av_tbl.va,
+ dev->av_tbl.pa);
+ dev->av_tbl.va = NULL;
+mem_err_ah:
+ dma_free_coherent(&pdev->dev, PAGE_SIZE, dev->av_tbl.pbl.va,
+ dev->av_tbl.pbl.pa);
+ dev->av_tbl.pbl.va = NULL;
+ dev->av_tbl.size = 0;
+mem_err:
+ kfree(cmd);
+ return status;
+}
+
+static void ocrdma_mbx_delete_ah_tbl(struct ocrdma_dev *dev)
+{
+ struct ocrdma_delete_ah_tbl *cmd;
+ struct pci_dev *pdev = dev->nic_info.pdev;
+
+ if (dev->av_tbl.va == NULL)
+ return;
+
+ cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DELETE_AH_TBL, sizeof(*cmd));
+ if (!cmd)
+ return;
+ cmd->ahid = dev->av_tbl.ahid;
+
+ ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
+ dma_free_coherent(&pdev->dev, dev->av_tbl.size, dev->av_tbl.va,
+ dev->av_tbl.pa);
+ dma_free_coherent(&pdev->dev, PAGE_SIZE, dev->av_tbl.pbl.va,
+ dev->av_tbl.pbl.pa);
+ kfree(cmd);
+}
+
+/* Multiple CQs uses the EQ. This routine returns least used
+ * EQ to associate with CQ. This will distributes the interrupt
+ * processing and CPU load to associated EQ, vector and so to that CPU.
+ */
+static u16 ocrdma_bind_eq(struct ocrdma_dev *dev)
+{
+ int i, selected_eq = 0, cq_cnt = 0;
+ u16 eq_id;
+
+ mutex_lock(&dev->dev_lock);
+ cq_cnt = dev->qp_eq_tbl[0].cq_cnt;
+ eq_id = dev->qp_eq_tbl[0].q.id;
+ /* find the EQ which is has the least number of
+ * CQs associated with it.
+ */
+ for (i = 0; i < dev->eq_cnt; i++) {
+ if (dev->qp_eq_tbl[i].cq_cnt < cq_cnt) {
+ cq_cnt = dev->qp_eq_tbl[i].cq_cnt;
+ eq_id = dev->qp_eq_tbl[i].q.id;
+ selected_eq = i;
+ }
+ }
+ dev->qp_eq_tbl[selected_eq].cq_cnt += 1;
+ mutex_unlock(&dev->dev_lock);
+ return eq_id;
+}
+
+static void ocrdma_unbind_eq(struct ocrdma_dev *dev, u16 eq_id)
+{
+ int i;
+
+ mutex_lock(&dev->dev_lock);
+ for (i = 0; i < dev->eq_cnt; i++) {
+ if (dev->qp_eq_tbl[i].q.id != eq_id)
+ continue;
+ dev->qp_eq_tbl[i].cq_cnt -= 1;
+ break;
+ }
+ mutex_unlock(&dev->dev_lock);
+}
+
+int ocrdma_mbx_create_cq(struct ocrdma_dev *dev, struct ocrdma_cq *cq,
+ int entries, int dpp_cq)
+{
+ int status = -ENOMEM; int max_hw_cqe;
+ struct pci_dev *pdev = dev->nic_info.pdev;
+ struct ocrdma_create_cq *cmd;
+ struct ocrdma_create_cq_rsp *rsp;
+ u32 hw_pages, cqe_size, page_size, cqe_count;
+
+ if (dpp_cq)
+ return -EINVAL;
+ if (entries > dev->attr.max_cqe) {
+ ocrdma_err("%s(%d) max_cqe=0x%x, requester_cqe=0x%x\n",
+ __func__, dev->id, dev->attr.max_cqe, entries);
+ return -EINVAL;
+ }
+ if (dpp_cq && (dev->nic_info.dev_family != OCRDMA_GEN2_FAMILY))
+ return -EINVAL;
+
+ if (dpp_cq) {
+ cq->max_hw_cqe = 1;
+ max_hw_cqe = 1;
+ cqe_size = OCRDMA_DPP_CQE_SIZE;
+ hw_pages = 1;
+ } else {
+ cq->max_hw_cqe = dev->attr.max_cqe;
+ max_hw_cqe = dev->attr.max_cqe;
+ cqe_size = sizeof(struct ocrdma_cqe);
+ hw_pages = OCRDMA_CREATE_CQ_MAX_PAGES;
+ }
+
+ cq->len = roundup(max_hw_cqe * cqe_size, OCRDMA_MIN_Q_PAGE_SIZE);
+
+ cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_CREATE_CQ, sizeof(*cmd));
+ if (!cmd)
+ return -ENOMEM;
+ ocrdma_init_mch(&cmd->cmd.req, OCRDMA_CMD_CREATE_CQ,
+ OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
+ cq->va = dma_alloc_coherent(&pdev->dev, cq->len, &cq->pa, GFP_KERNEL);
+ if (!cq->va) {
+ status = -ENOMEM;
+ goto mem_err;
+ }
+ memset(cq->va, 0, cq->len);
+ page_size = cq->len / hw_pages;
+ cmd->cmd.pgsz_pgcnt = (page_size / OCRDMA_MIN_Q_PAGE_SIZE) <<
+ OCRDMA_CREATE_CQ_PAGE_SIZE_SHIFT;
+ cmd->cmd.pgsz_pgcnt |= hw_pages;
+ cmd->cmd.ev_cnt_flags = OCRDMA_CREATE_CQ_DEF_FLAGS;
+
+ if (dev->eq_cnt < 0)
+ goto eq_err;
+ cq->eqn = ocrdma_bind_eq(dev);
+ cmd->cmd.req.rsvd_version = OCRDMA_CREATE_CQ_VER2;
+ cqe_count = cq->len / cqe_size;
+ if (cqe_count > 1024)
+ /* Set cnt to 3 to indicate more than 1024 cq entries */
+ cmd->cmd.ev_cnt_flags |= (0x3 << OCRDMA_CREATE_CQ_CNT_SHIFT);
+ else {
+ u8 count = 0;
+ switch (cqe_count) {
+ case 256:
+ count = 0;
+ break;
+ case 512:
+ count = 1;
+ break;
+ case 1024:
+ count = 2;
+ break;
+ default:
+ goto mbx_err;
+ }
+ cmd->cmd.ev_cnt_flags |= (count << OCRDMA_CREATE_CQ_CNT_SHIFT);
+ }
+ /* shared eq between all the consumer cqs. */
+ cmd->cmd.eqn = cq->eqn;
+ if (dev->nic_info.dev_family == OCRDMA_GEN2_FAMILY) {
+ if (dpp_cq)
+ cmd->cmd.pgsz_pgcnt |= OCRDMA_CREATE_CQ_DPP <<
+ OCRDMA_CREATE_CQ_TYPE_SHIFT;
+ cq->phase_change = false;
+ cmd->cmd.cqe_count = (cq->len / cqe_size);
+ } else {
+ cmd->cmd.cqe_count = (cq->len / cqe_size) - 1;
+ cmd->cmd.ev_cnt_flags |= OCRDMA_CREATE_CQ_FLAGS_AUTO_VALID;
+ cq->phase_change = true;
+ }
+
+ ocrdma_build_q_pages(&cmd->cmd.pa[0], hw_pages, cq->pa, page_size);
+ status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
+ if (status)
+ goto mbx_err;
+
+ rsp = (struct ocrdma_create_cq_rsp *)cmd;
+ cq->id = (u16) (rsp->rsp.cq_id & OCRDMA_CREATE_CQ_RSP_CQ_ID_MASK);
+ kfree(cmd);
+ return 0;
+mbx_err:
+ ocrdma_unbind_eq(dev, cq->eqn);
+eq_err:
+ dma_free_coherent(&pdev->dev, cq->len, cq->va, cq->pa);
+mem_err:
+ kfree(cmd);
+ return status;
+}
+
+int ocrdma_mbx_destroy_cq(struct ocrdma_dev *dev, struct ocrdma_cq *cq)
+{
+ int status = -ENOMEM;
+ struct ocrdma_destroy_cq *cmd;
+
+ cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DELETE_CQ, sizeof(*cmd));
+ if (!cmd)
+ return status;
+ ocrdma_init_mch(&cmd->req, OCRDMA_CMD_DELETE_CQ,
+ OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
+
+ cmd->bypass_flush_qid |=
+ (cq->id << OCRDMA_DESTROY_CQ_QID_SHIFT) &
+ OCRDMA_DESTROY_CQ_QID_MASK;
+
+ ocrdma_unbind_eq(dev, cq->eqn);
+ status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
+ if (status)
+ goto mbx_err;
+ dma_free_coherent(&dev->nic_info.pdev->dev, cq->len, cq->va, cq->pa);
+mbx_err:
+ kfree(cmd);
+ return status;
+}
+
+int ocrdma_mbx_alloc_lkey(struct ocrdma_dev *dev, struct ocrdma_hw_mr *hwmr,
+ u32 pdid, int addr_check)
+{
+ int status = -ENOMEM;
+ struct ocrdma_alloc_lkey *cmd;
+ struct ocrdma_alloc_lkey_rsp *rsp;
+
+ cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_ALLOC_LKEY, sizeof(*cmd));
+ if (!cmd)
+ return status;
+ cmd->pdid = pdid;
+ cmd->pbl_sz_flags |= addr_check;
+ cmd->pbl_sz_flags |= (hwmr->fr_mr << OCRDMA_ALLOC_LKEY_FMR_SHIFT);
+ cmd->pbl_sz_flags |=
+ (hwmr->remote_wr << OCRDMA_ALLOC_LKEY_REMOTE_WR_SHIFT);
+ cmd->pbl_sz_flags |=
+ (hwmr->remote_rd << OCRDMA_ALLOC_LKEY_REMOTE_RD_SHIFT);
+ cmd->pbl_sz_flags |=
+ (hwmr->local_wr << OCRDMA_ALLOC_LKEY_LOCAL_WR_SHIFT);
+ cmd->pbl_sz_flags |=
+ (hwmr->remote_atomic << OCRDMA_ALLOC_LKEY_REMOTE_ATOMIC_SHIFT);
+ cmd->pbl_sz_flags |=
+ (hwmr->num_pbls << OCRDMA_ALLOC_LKEY_PBL_SIZE_SHIFT);
+
+ status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
+ if (status)
+ goto mbx_err;
+ rsp = (struct ocrdma_alloc_lkey_rsp *)cmd;
+ hwmr->lkey = rsp->lrkey;
+mbx_err:
+ kfree(cmd);
+ return status;
+}
+
+int ocrdma_mbx_dealloc_lkey(struct ocrdma_dev *dev, int fr_mr, u32 lkey)
+{
+ int status = -ENOMEM;
+ struct ocrdma_dealloc_lkey *cmd;
+
+ cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DEALLOC_LKEY, sizeof(*cmd));
+ if (!cmd)
+ return -ENOMEM;
+ cmd->lkey = lkey;
+ cmd->rsvd_frmr = fr_mr ? 1 : 0;
+ status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
+ if (status)
+ goto mbx_err;
+mbx_err:
+ kfree(cmd);
+ return status;
+}
+
+static int ocrdma_mbx_reg_mr(struct ocrdma_dev *dev, struct ocrdma_hw_mr *hwmr,
+ u32 pdid, u32 pbl_cnt, u32 pbe_size, u32 last)
+{
+ int status = -ENOMEM;
+ int i;
+ struct ocrdma_reg_nsmr *cmd;
+ struct ocrdma_reg_nsmr_rsp *rsp;
+
+ cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_REGISTER_NSMR, sizeof(*cmd));
+ if (!cmd)
+ return -ENOMEM;
+ cmd->num_pbl_pdid =
+ pdid | (hwmr->num_pbls << OCRDMA_REG_NSMR_NUM_PBL_SHIFT);
+
+ cmd->flags_hpage_pbe_sz |= (hwmr->remote_wr <<
+ OCRDMA_REG_NSMR_REMOTE_WR_SHIFT);
+ cmd->flags_hpage_pbe_sz |= (hwmr->remote_rd <<
+ OCRDMA_REG_NSMR_REMOTE_RD_SHIFT);
+ cmd->flags_hpage_pbe_sz |= (hwmr->local_wr <<
+ OCRDMA_REG_NSMR_LOCAL_WR_SHIFT);
+ cmd->flags_hpage_pbe_sz |= (hwmr->remote_atomic <<
+ OCRDMA_REG_NSMR_REMOTE_ATOMIC_SHIFT);
+ cmd->flags_hpage_pbe_sz |= (hwmr->mw_bind <<
+ OCRDMA_REG_NSMR_BIND_MEMWIN_SHIFT);
+ cmd->flags_hpage_pbe_sz |= (last << OCRDMA_REG_NSMR_LAST_SHIFT);
+
+ cmd->flags_hpage_pbe_sz |= (hwmr->pbe_size / OCRDMA_MIN_HPAGE_SIZE);
+ cmd->flags_hpage_pbe_sz |= (hwmr->pbl_size / OCRDMA_MIN_HPAGE_SIZE) <<
+ OCRDMA_REG_NSMR_HPAGE_SIZE_SHIFT;
+ cmd->totlen_low = hwmr->len;
+ cmd->totlen_high = upper_32_bits(hwmr->len);
+ cmd->fbo_low = (u32) (hwmr->fbo & 0xffffffff);
+ cmd->fbo_high = (u32) upper_32_bits(hwmr->fbo);
+ cmd->va_loaddr = (u32) hwmr->va;
+ cmd->va_hiaddr = (u32) upper_32_bits(hwmr->va);
+
+ for (i = 0; i < pbl_cnt; i++) {
+ cmd->pbl[i].lo = (u32) (hwmr->pbl_table[i].pa & 0xffffffff);
+ cmd->pbl[i].hi = upper_32_bits(hwmr->pbl_table[i].pa);
+ }
+ status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
+ if (status)
+ goto mbx_err;
+ rsp = (struct ocrdma_reg_nsmr_rsp *)cmd;
+ hwmr->lkey = rsp->lrkey;
+mbx_err:
+ kfree(cmd);
+ return status;
+}
+
+static int ocrdma_mbx_reg_mr_cont(struct ocrdma_dev *dev,
+ struct ocrdma_hw_mr *hwmr, u32 pbl_cnt,
+ u32 pbl_offset, u32 last)
+{
+ int status = -ENOMEM;
+ int i;
+ struct ocrdma_reg_nsmr_cont *cmd;
+
+ cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_REGISTER_NSMR_CONT, sizeof(*cmd));
+ if (!cmd)
+ return -ENOMEM;
+ cmd->lrkey = hwmr->lkey;
+ cmd->num_pbl_offset = (pbl_cnt << OCRDMA_REG_NSMR_CONT_NUM_PBL_SHIFT) |
+ (pbl_offset & OCRDMA_REG_NSMR_CONT_PBL_SHIFT_MASK);
+ cmd->last = last << OCRDMA_REG_NSMR_CONT_LAST_SHIFT;
+
+ for (i = 0; i < pbl_cnt; i++) {
+ cmd->pbl[i].lo =
+ (u32) (hwmr->pbl_table[i + pbl_offset].pa & 0xffffffff);
+ cmd->pbl[i].hi =
+ upper_32_bits(hwmr->pbl_table[i + pbl_offset].pa);
+ }
+ status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
+ if (status)
+ goto mbx_err;
+mbx_err:
+ kfree(cmd);
+ return status;
+}
+
+int ocrdma_reg_mr(struct ocrdma_dev *dev,
+ struct ocrdma_hw_mr *hwmr, u32 pdid, int acc)
+{
+ int status;
+ u32 last = 0;
+ u32 cur_pbl_cnt, pbl_offset;
+ u32 pending_pbl_cnt = hwmr->num_pbls;
+
+ pbl_offset = 0;
+ cur_pbl_cnt = min(pending_pbl_cnt, MAX_OCRDMA_NSMR_PBL);
+ if (cur_pbl_cnt == pending_pbl_cnt)
+ last = 1;
+
+ status = ocrdma_mbx_reg_mr(dev, hwmr, pdid,
+ cur_pbl_cnt, hwmr->pbe_size, last);
+ if (status) {
+ ocrdma_err("%s() status=%d\n", __func__, status);
+ return status;
+ }
+ /* if there is no more pbls to register then exit. */
+ if (last)
+ return 0;
+
+ while (!last) {
+ pbl_offset += cur_pbl_cnt;
+ pending_pbl_cnt -= cur_pbl_cnt;
+ cur_pbl_cnt = min(pending_pbl_cnt, MAX_OCRDMA_NSMR_PBL);
+ /* if we reach the end of the pbls, then need to set the last
+ * bit, indicating no more pbls to register for this memory key.
+ */
+ if (cur_pbl_cnt == pending_pbl_cnt)
+ last = 1;
+
+ status = ocrdma_mbx_reg_mr_cont(dev, hwmr, cur_pbl_cnt,
+ pbl_offset, last);
+ if (status)
+ break;
+ }
+ if (status)
+ ocrdma_err("%s() err. status=%d\n", __func__, status);
+
+ return status;
+}
+
+bool ocrdma_is_qp_in_sq_flushlist(struct ocrdma_cq *cq, struct ocrdma_qp *qp)
+{
+ struct ocrdma_qp *tmp;
+ bool found = false;
+ list_for_each_entry(tmp, &cq->sq_head, sq_entry) {
+ if (qp == tmp) {
+ found = true;
+ break;
+ }
+ }
+ return found;
+}
+
+bool ocrdma_is_qp_in_rq_flushlist(struct ocrdma_cq *cq, struct ocrdma_qp *qp)
+{
+ struct ocrdma_qp *tmp;
+ bool found = false;
+ list_for_each_entry(tmp, &cq->rq_head, rq_entry) {
+ if (qp == tmp) {
+ found = true;
+ break;
+ }
+ }
+ return found;
+}
+
+void ocrdma_flush_qp(struct ocrdma_qp *qp)
+{
+ bool found;
+ unsigned long flags;
+
+ spin_lock_irqsave(&qp->dev->flush_q_lock, flags);
+ found = ocrdma_is_qp_in_sq_flushlist(qp->sq_cq, qp);
+ if (!found)
+ list_add_tail(&qp->sq_entry, &qp->sq_cq->sq_head);
+ if (!qp->srq) {
+ found = ocrdma_is_qp_in_rq_flushlist(qp->rq_cq, qp);
+ if (!found)
+ list_add_tail(&qp->rq_entry, &qp->rq_cq->rq_head);
+ }
+ spin_unlock_irqrestore(&qp->dev->flush_q_lock, flags);
+}
+
+int ocrdma_qp_state_machine(struct ocrdma_qp *qp, enum ib_qp_state new_ib_state,
+ enum ib_qp_state *old_ib_state)
+{
+ unsigned long flags;
+ int status = 0;
+ enum ocrdma_qp_state new_state;
+ new_state = get_ocrdma_qp_state(new_ib_state);
+
+ /* sync with wqe and rqe posting */
+ spin_lock_irqsave(&qp->q_lock, flags);
+
+ if (old_ib_state)
+ *old_ib_state = get_ibqp_state(qp->state);
+ if (new_state == qp->state) {
+ spin_unlock_irqrestore(&qp->q_lock, flags);
+ return 1;
+ }
+
+ switch (qp->state) {
+ case OCRDMA_QPS_RST:
+ switch (new_state) {
+ case OCRDMA_QPS_RST:
+ case OCRDMA_QPS_INIT:
+ break;
+ default:
+ status = -EINVAL;
+ break;
+ };
+ break;
+ case OCRDMA_QPS_INIT:
+ /* qps: INIT->XXX */
+ switch (new_state) {
+ case OCRDMA_QPS_INIT:
+ case OCRDMA_QPS_RTR:
+ break;
+ case OCRDMA_QPS_ERR:
+ ocrdma_flush_qp(qp);
+ break;
+ default:
+ status = -EINVAL;
+ break;
+ };
+ break;
+ case OCRDMA_QPS_RTR:
+ /* qps: RTS->XXX */
+ switch (new_state) {
+ case OCRDMA_QPS_RTS:
+ break;
+ case OCRDMA_QPS_ERR:
+ ocrdma_flush_qp(qp);
+ break;
+ default:
+ status = -EINVAL;
+ break;
+ };
+ break;
+ case OCRDMA_QPS_RTS:
+ /* qps: RTS->XXX */
+ switch (new_state) {
+ case OCRDMA_QPS_SQD:
+ case OCRDMA_QPS_SQE:
+ break;
+ case OCRDMA_QPS_ERR:
+ ocrdma_flush_qp(qp);
+ break;
+ default:
+ status = -EINVAL;
+ break;
+ };
+ break;
+ case OCRDMA_QPS_SQD:
+ /* qps: SQD->XXX */
+ switch (new_state) {
+ case OCRDMA_QPS_RTS:
+ case OCRDMA_QPS_SQE:
+ case OCRDMA_QPS_ERR:
+ break;
+ default:
+ status = -EINVAL;
+ break;
+ };
+ break;
+ case OCRDMA_QPS_SQE:
+ switch (new_state) {
+ case OCRDMA_QPS_RTS:
+ case OCRDMA_QPS_ERR:
+ break;
+ default:
+ status = -EINVAL;
+ break;
+ };
+ break;
+ case OCRDMA_QPS_ERR:
+ /* qps: ERR->XXX */
+ switch (new_state) {
+ case OCRDMA_QPS_RST:
+ break;
+ default:
+ status = -EINVAL;
+ break;
+ };
+ break;
+ default:
+ status = -EINVAL;
+ break;
+ };
+ if (!status)
+ qp->state = new_state;
+
+ spin_unlock_irqrestore(&qp->q_lock, flags);
+ return status;
+}
+
+static u32 ocrdma_set_create_qp_mbx_access_flags(struct ocrdma_qp *qp)
+{
+ u32 flags = 0;
+ if (qp->cap_flags & OCRDMA_QP_INB_RD)
+ flags |= OCRDMA_CREATE_QP_REQ_INB_RDEN_MASK;
+ if (qp->cap_flags & OCRDMA_QP_INB_WR)
+ flags |= OCRDMA_CREATE_QP_REQ_INB_WREN_MASK;
+ if (qp->cap_flags & OCRDMA_QP_MW_BIND)
+ flags |= OCRDMA_CREATE_QP_REQ_BIND_MEMWIN_MASK;
+ if (qp->cap_flags & OCRDMA_QP_LKEY0)
+ flags |= OCRDMA_CREATE_QP_REQ_ZERO_LKEYEN_MASK;
+ if (qp->cap_flags & OCRDMA_QP_FAST_REG)
+ flags |= OCRDMA_CREATE_QP_REQ_FMR_EN_MASK;
+ return flags;
+}
+
+static int ocrdma_set_create_qp_sq_cmd(struct ocrdma_create_qp_req *cmd,
+ struct ib_qp_init_attr *attrs,
+ struct ocrdma_qp *qp)
+{
+ int status;
+ u32 len, hw_pages, hw_page_size;
+ dma_addr_t pa;
+ struct ocrdma_dev *dev = qp->dev;
+ struct pci_dev *pdev = dev->nic_info.pdev;
+ u32 max_wqe_allocated;
+ u32 max_sges = attrs->cap.max_send_sge;
+
+ max_wqe_allocated = attrs->cap.max_send_wr;
+ /* need to allocate one extra to for GEN1 family */
+ if (dev->nic_info.dev_family != OCRDMA_GEN2_FAMILY)
+ max_wqe_allocated += 1;
+
+ status = ocrdma_build_q_conf(&max_wqe_allocated,
+ dev->attr.wqe_size, &hw_pages, &hw_page_size);
+ if (status) {
+ ocrdma_err("%s() req. max_send_wr=0x%x\n", __func__,
+ max_wqe_allocated);
+ return -EINVAL;
+ }
+ qp->sq.max_cnt = max_wqe_allocated;
+ len = (hw_pages * hw_page_size);
+
+ qp->sq.va = dma_alloc_coherent(&pdev->dev, len, &pa, GFP_KERNEL);
+ if (!qp->sq.va)
+ return -EINVAL;
+ memset(qp->sq.va, 0, len);
+ qp->sq.len = len;
+ qp->sq.pa = pa;
+ qp->sq.entry_size = dev->attr.wqe_size;
+ ocrdma_build_q_pages(&cmd->wq_addr[0], hw_pages, pa, hw_page_size);
+
+ cmd->type_pgsz_pdn |= (ilog2(hw_page_size / OCRDMA_MIN_Q_PAGE_SIZE)
+ << OCRDMA_CREATE_QP_REQ_SQ_PAGE_SIZE_SHIFT);
+ cmd->num_wq_rq_pages |= (hw_pages <<
+ OCRDMA_CREATE_QP_REQ_NUM_WQ_PAGES_SHIFT) &
+ OCRDMA_CREATE_QP_REQ_NUM_WQ_PAGES_MASK;
+ cmd->max_sge_send_write |= (max_sges <<
+ OCRDMA_CREATE_QP_REQ_MAX_SGE_SEND_SHIFT) &
+ OCRDMA_CREATE_QP_REQ_MAX_SGE_SEND_MASK;
+ cmd->max_sge_send_write |= (max_sges <<
+ OCRDMA_CREATE_QP_REQ_MAX_SGE_WRITE_SHIFT) &
+ OCRDMA_CREATE_QP_REQ_MAX_SGE_WRITE_MASK;
+ cmd->max_wqe_rqe |= (ilog2(qp->sq.max_cnt) <<
+ OCRDMA_CREATE_QP_REQ_MAX_WQE_SHIFT) &
+ OCRDMA_CREATE_QP_REQ_MAX_WQE_MASK;
+ cmd->wqe_rqe_size |= (dev->attr.wqe_size <<
+ OCRDMA_CREATE_QP_REQ_WQE_SIZE_SHIFT) &
+ OCRDMA_CREATE_QP_REQ_WQE_SIZE_MASK;
+ return 0;
+}
+
+static int ocrdma_set_create_qp_rq_cmd(struct ocrdma_create_qp_req *cmd,
+ struct ib_qp_init_attr *attrs,
+ struct ocrdma_qp *qp)
+{
+ int status;
+ u32 len, hw_pages, hw_page_size;
+ dma_addr_t pa = 0;
+ struct ocrdma_dev *dev = qp->dev;
+ struct pci_dev *pdev = dev->nic_info.pdev;
+ u32 max_rqe_allocated = attrs->cap.max_recv_wr + 1;
+
+ status = ocrdma_build_q_conf(&max_rqe_allocated, dev->attr.rqe_size,
+ &hw_pages, &hw_page_size);
+ if (status) {
+ ocrdma_err("%s() req. max_recv_wr=0x%x\n", __func__,
+ attrs->cap.max_recv_wr + 1);
+ return status;
+ }
+ qp->rq.max_cnt = max_rqe_allocated;
+ len = (hw_pages * hw_page_size);
+
+ qp->rq.va = dma_alloc_coherent(&pdev->dev, len, &pa, GFP_KERNEL);
+ if (!qp->rq.va)
+ return status;
+ memset(qp->rq.va, 0, len);
+ qp->rq.pa = pa;
+ qp->rq.len = len;
+ qp->rq.entry_size = dev->attr.rqe_size;
+
+ ocrdma_build_q_pages(&cmd->rq_addr[0], hw_pages, pa, hw_page_size);
+ cmd->type_pgsz_pdn |= (ilog2(hw_page_size / OCRDMA_MIN_Q_PAGE_SIZE) <<
+ OCRDMA_CREATE_QP_REQ_RQ_PAGE_SIZE_SHIFT);
+ cmd->num_wq_rq_pages |=
+ (hw_pages << OCRDMA_CREATE_QP_REQ_NUM_RQ_PAGES_SHIFT) &
+ OCRDMA_CREATE_QP_REQ_NUM_RQ_PAGES_MASK;
+ cmd->max_sge_recv_flags |= (attrs->cap.max_recv_sge <<
+ OCRDMA_CREATE_QP_REQ_MAX_SGE_RECV_SHIFT) &
+ OCRDMA_CREATE_QP_REQ_MAX_SGE_RECV_MASK;
+ cmd->max_wqe_rqe |= (ilog2(qp->rq.max_cnt) <<
+ OCRDMA_CREATE_QP_REQ_MAX_RQE_SHIFT) &
+ OCRDMA_CREATE_QP_REQ_MAX_RQE_MASK;
+ cmd->wqe_rqe_size |= (dev->attr.rqe_size <<
+ OCRDMA_CREATE_QP_REQ_RQE_SIZE_SHIFT) &
+ OCRDMA_CREATE_QP_REQ_RQE_SIZE_MASK;
+ return 0;
+}
+
+static void ocrdma_set_create_qp_dpp_cmd(struct ocrdma_create_qp_req *cmd,
+ struct ocrdma_pd *pd,
+ struct ocrdma_qp *qp,
+ u8 enable_dpp_cq, u16 dpp_cq_id)
+{
+ pd->num_dpp_qp--;
+ qp->dpp_enabled = true;
+ cmd->max_sge_recv_flags |= OCRDMA_CREATE_QP_REQ_ENABLE_DPP_MASK;
+ if (!enable_dpp_cq)
+ return;
+ cmd->max_sge_recv_flags |= OCRDMA_CREATE_QP_REQ_ENABLE_DPP_MASK;
+ cmd->dpp_credits_cqid = dpp_cq_id;
+ cmd->dpp_credits_cqid |= OCRDMA_CREATE_QP_REQ_DPP_CREDIT_LIMIT <<
+ OCRDMA_CREATE_QP_REQ_DPP_CREDIT_SHIFT;
+}
+
+static int ocrdma_set_create_qp_ird_cmd(struct ocrdma_create_qp_req *cmd,
+ struct ocrdma_qp *qp)
+{
+ struct ocrdma_dev *dev = qp->dev;
+ struct pci_dev *pdev = dev->nic_info.pdev;
+ dma_addr_t pa = 0;
+ int ird_page_size = dev->attr.ird_page_size;
+ int ird_q_len = dev->attr.num_ird_pages * ird_page_size;
+
+ if (dev->attr.ird == 0)
+ return 0;
+
+ qp->ird_q_va = dma_alloc_coherent(&pdev->dev, ird_q_len,
+ &pa, GFP_KERNEL);
+ if (!qp->ird_q_va)
+ return -ENOMEM;
+ memset(qp->ird_q_va, 0, ird_q_len);
+ ocrdma_build_q_pages(&cmd->ird_addr[0], dev->attr.num_ird_pages,
+ pa, ird_page_size);
+ return 0;
+}
+
+static void ocrdma_get_create_qp_rsp(struct ocrdma_create_qp_rsp *rsp,
+ struct ocrdma_qp *qp,
+ struct ib_qp_init_attr *attrs,
+ u16 *dpp_offset, u16 *dpp_credit_lmt)
+{
+ u32 max_wqe_allocated, max_rqe_allocated;
+ qp->id = rsp->qp_id & OCRDMA_CREATE_QP_RSP_QP_ID_MASK;
+ qp->rq.dbid = rsp->sq_rq_id & OCRDMA_CREATE_QP_RSP_RQ_ID_MASK;
+ qp->sq.dbid = rsp->sq_rq_id >> OCRDMA_CREATE_QP_RSP_SQ_ID_SHIFT;
+ qp->max_ird = rsp->max_ord_ird & OCRDMA_CREATE_QP_RSP_MAX_IRD_MASK;
+ qp->max_ord = (rsp->max_ord_ird >> OCRDMA_CREATE_QP_RSP_MAX_ORD_SHIFT);
+ qp->dpp_enabled = false;
+ if (rsp->dpp_response & OCRDMA_CREATE_QP_RSP_DPP_ENABLED_MASK) {
+ qp->dpp_enabled = true;
+ *dpp_credit_lmt = (rsp->dpp_response &
+ OCRDMA_CREATE_QP_RSP_DPP_CREDITS_MASK) >>
+ OCRDMA_CREATE_QP_RSP_DPP_CREDITS_SHIFT;
+ *dpp_offset = (rsp->dpp_response &
+ OCRDMA_CREATE_QP_RSP_DPP_PAGE_OFFSET_MASK) >>
+ OCRDMA_CREATE_QP_RSP_DPP_PAGE_OFFSET_SHIFT;
+ }
+ max_wqe_allocated =
+ rsp->max_wqe_rqe >> OCRDMA_CREATE_QP_RSP_MAX_WQE_SHIFT;
+ max_wqe_allocated = 1 << max_wqe_allocated;
+ max_rqe_allocated = 1 << ((u16)rsp->max_wqe_rqe);
+
+ if (qp->dev->nic_info.dev_family == OCRDMA_GEN2_FAMILY) {
+ qp->sq.free_delta = 0;
+ qp->rq.free_delta = 1;
+ } else
+ qp->sq.free_delta = 1;
+
+ qp->sq.max_cnt = max_wqe_allocated;
+ qp->sq.max_wqe_idx = max_wqe_allocated - 1;
+
+ if (!attrs->srq) {
+ qp->rq.max_cnt = max_rqe_allocated;
+ qp->rq.max_wqe_idx = max_rqe_allocated - 1;
+ qp->rq.free_delta = 1;
+ }
+}
+
+int ocrdma_mbx_create_qp(struct ocrdma_qp *qp, struct ib_qp_init_attr *attrs,
+ u8 enable_dpp_cq, u16 dpp_cq_id, u16 *dpp_offset,
+ u16 *dpp_credit_lmt)
+{
+ int status = -ENOMEM;
+ u32 flags = 0;
+ struct ocrdma_dev *dev = qp->dev;
+ struct ocrdma_pd *pd = qp->pd;
+ struct pci_dev *pdev = dev->nic_info.pdev;
+ struct ocrdma_cq *cq;
+ struct ocrdma_create_qp_req *cmd;
+ struct ocrdma_create_qp_rsp *rsp;
+ int qptype;
+
+ switch (attrs->qp_type) {
+ case IB_QPT_GSI:
+ qptype = OCRDMA_QPT_GSI;
+ break;
+ case IB_QPT_RC:
+ qptype = OCRDMA_QPT_RC;
+ break;
+ case IB_QPT_UD:
+ qptype = OCRDMA_QPT_UD;
+ break;
+ default:
+ return -EINVAL;
+ };
+
+ cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_CREATE_QP, sizeof(*cmd));
+ if (!cmd)
+ return status;
+ cmd->type_pgsz_pdn |= (qptype << OCRDMA_CREATE_QP_REQ_QPT_SHIFT) &
+ OCRDMA_CREATE_QP_REQ_QPT_MASK;
+ status = ocrdma_set_create_qp_sq_cmd(cmd, attrs, qp);
+ if (status)
+ goto sq_err;
+
+ if (attrs->srq) {
+ struct ocrdma_srq *srq = get_ocrdma_srq(attrs->srq);
+ cmd->max_sge_recv_flags |= OCRDMA_CREATE_QP_REQ_USE_SRQ_MASK;
+ cmd->rq_addr[0].lo = srq->id;
+ qp->srq = srq;
+ } else {
+ status = ocrdma_set_create_qp_rq_cmd(cmd, attrs, qp);
+ if (status)
+ goto rq_err;
+ }
+
+ status = ocrdma_set_create_qp_ird_cmd(cmd, qp);
+ if (status)
+ goto mbx_err;
+
+ cmd->type_pgsz_pdn |= (pd->id << OCRDMA_CREATE_QP_REQ_PD_ID_SHIFT) &
+ OCRDMA_CREATE_QP_REQ_PD_ID_MASK;
+
+ flags = ocrdma_set_create_qp_mbx_access_flags(qp);
+
+ cmd->max_sge_recv_flags |= flags;
+ cmd->max_ord_ird |= (dev->attr.max_ord_per_qp <<
+ OCRDMA_CREATE_QP_REQ_MAX_ORD_SHIFT) &
+ OCRDMA_CREATE_QP_REQ_MAX_ORD_MASK;
+ cmd->max_ord_ird |= (dev->attr.max_ird_per_qp <<
+ OCRDMA_CREATE_QP_REQ_MAX_IRD_SHIFT) &
+ OCRDMA_CREATE_QP_REQ_MAX_IRD_MASK;
+ cq = get_ocrdma_cq(attrs->send_cq);
+ cmd->wq_rq_cqid |= (cq->id << OCRDMA_CREATE_QP_REQ_WQ_CQID_SHIFT) &
+ OCRDMA_CREATE_QP_REQ_WQ_CQID_MASK;
+ qp->sq_cq = cq;
+ cq = get_ocrdma_cq(attrs->recv_cq);
+ cmd->wq_rq_cqid |= (cq->id << OCRDMA_CREATE_QP_REQ_RQ_CQID_SHIFT) &
+ OCRDMA_CREATE_QP_REQ_RQ_CQID_MASK;
+ qp->rq_cq = cq;
+
+ if (pd->dpp_enabled && attrs->cap.max_inline_data && pd->num_dpp_qp &&
+ (attrs->cap.max_inline_data <= dev->attr.max_inline_data))
+ ocrdma_set_create_qp_dpp_cmd(cmd, pd, qp, enable_dpp_cq,
+ dpp_cq_id);
+
+ status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
+ if (status)
+ goto mbx_err;
+ rsp = (struct ocrdma_create_qp_rsp *)cmd;
+ ocrdma_get_create_qp_rsp(rsp, qp, attrs, dpp_offset, dpp_credit_lmt);
+ qp->state = OCRDMA_QPS_RST;
+ kfree(cmd);
+ return 0;
+mbx_err:
+ if (qp->rq.va)
+ dma_free_coherent(&pdev->dev, qp->rq.len, qp->rq.va, qp->rq.pa);
+rq_err:
+ ocrdma_err("%s(%d) rq_err\n", __func__, dev->id);
+ dma_free_coherent(&pdev->dev, qp->sq.len, qp->sq.va, qp->sq.pa);
+sq_err:
+ ocrdma_err("%s(%d) sq_err\n", __func__, dev->id);
+ kfree(cmd);
+ return status;
+}
+
+int ocrdma_mbx_query_qp(struct ocrdma_dev *dev, struct ocrdma_qp *qp,
+ struct ocrdma_qp_params *param)
+{
+ int status = -ENOMEM;
+ struct ocrdma_query_qp *cmd;
+ struct ocrdma_query_qp_rsp *rsp;
+
+ cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_QUERY_QP, sizeof(*cmd));
+ if (!cmd)
+ return status;
+ cmd->qp_id = qp->id;
+ status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
+ if (status)
+ goto mbx_err;
+ rsp = (struct ocrdma_query_qp_rsp *)cmd;
+ memcpy(param, &rsp->params, sizeof(struct ocrdma_qp_params));
+mbx_err:
+ kfree(cmd);
+ return status;
+}
+
+int ocrdma_resolve_dgid(struct ocrdma_dev *dev, union ib_gid *dgid,
+ u8 *mac_addr)
+{
+ struct in6_addr in6;
+
+ memcpy(&in6, dgid, sizeof in6);
+ if (rdma_is_multicast_addr(&in6))
+ rdma_get_mcast_mac(&in6, mac_addr);
+ else if (rdma_link_local_addr(&in6))
+ rdma_get_ll_mac(&in6, mac_addr);
+ else {
+ ocrdma_err("%s() fail to resolve mac_addr.\n", __func__);
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static void ocrdma_set_av_params(struct ocrdma_qp *qp,
+ struct ocrdma_modify_qp *cmd,
+ struct ib_qp_attr *attrs)
+{
+ struct ib_ah_attr *ah_attr = &attrs->ah_attr;
+ union ib_gid sgid;
+ u32 vlan_id;
+ u8 mac_addr[6];
+ if ((ah_attr->ah_flags & IB_AH_GRH) == 0)
+ return;
+ cmd->params.tclass_sq_psn |=
+ (ah_attr->grh.traffic_class << OCRDMA_QP_PARAMS_TCLASS_SHIFT);
+ cmd->params.rnt_rc_sl_fl |=
+ (ah_attr->grh.flow_label & OCRDMA_QP_PARAMS_FLOW_LABEL_MASK);
+ cmd->params.hop_lmt_rq_psn |=
+ (ah_attr->grh.hop_limit << OCRDMA_QP_PARAMS_HOP_LMT_SHIFT);
+ cmd->flags |= OCRDMA_QP_PARA_FLOW_LBL_VALID;
+ memcpy(&cmd->params.dgid[0], &ah_attr->grh.dgid.raw[0],
+ sizeof(cmd->params.dgid));
+ ocrdma_query_gid(&qp->dev->ibdev, 1,
+ ah_attr->grh.sgid_index, &sgid);
+ qp->sgid_idx = ah_attr->grh.sgid_index;
+ memcpy(&cmd->params.sgid[0], &sgid.raw[0], sizeof(cmd->params.sgid));
+ ocrdma_resolve_dgid(qp->dev, &ah_attr->grh.dgid, &mac_addr[0]);
+ cmd->params.dmac_b0_to_b3 = mac_addr[0] | (mac_addr[1] << 8) |
+ (mac_addr[2] << 16) | (mac_addr[3] << 24);
+ /* convert them to LE format. */
+ ocrdma_cpu_to_le32(&cmd->params.dgid[0], sizeof(cmd->params.dgid));
+ ocrdma_cpu_to_le32(&cmd->params.sgid[0], sizeof(cmd->params.sgid));
+ cmd->params.vlan_dmac_b4_to_b5 = mac_addr[4] | (mac_addr[5] << 8);
+ vlan_id = rdma_get_vlan_id(&sgid);
+ if (vlan_id && (vlan_id < 0x1000)) {
+ cmd->params.vlan_dmac_b4_to_b5 |=
+ vlan_id << OCRDMA_QP_PARAMS_VLAN_SHIFT;
+ cmd->flags |= OCRDMA_QP_PARA_VLAN_EN_VALID;
+ }
+}
+
+static int ocrdma_set_qp_params(struct ocrdma_qp *qp,
+ struct ocrdma_modify_qp *cmd,
+ struct ib_qp_attr *attrs, int attr_mask,
+ enum ib_qp_state old_qps)
+{
+ int status = 0;
+ struct net_device *netdev = qp->dev->nic_info.netdev;
+ int eth_mtu = iboe_get_mtu(netdev->mtu);
+
+ if (attr_mask & IB_QP_PKEY_INDEX) {
+ cmd->params.path_mtu_pkey_indx |= (attrs->pkey_index &
+ OCRDMA_QP_PARAMS_PKEY_INDEX_MASK);
+ cmd->flags |= OCRDMA_QP_PARA_PKEY_VALID;
+ }
+ if (attr_mask & IB_QP_QKEY) {
+ qp->qkey = attrs->qkey;
+ cmd->params.qkey = attrs->qkey;
+ cmd->flags |= OCRDMA_QP_PARA_QKEY_VALID;
+ }
+ if (attr_mask & IB_QP_AV)
+ ocrdma_set_av_params(qp, cmd, attrs);
+ else if (qp->qp_type == IB_QPT_GSI || qp->qp_type == IB_QPT_UD) {
+ /* set the default mac address for UD, GSI QPs */
+ cmd->params.dmac_b0_to_b3 = qp->dev->nic_info.mac_addr[0] |
+ (qp->dev->nic_info.mac_addr[1] << 8) |
+ (qp->dev->nic_info.mac_addr[2] << 16) |
+ (qp->dev->nic_info.mac_addr[3] << 24);
+ cmd->params.vlan_dmac_b4_to_b5 = qp->dev->nic_info.mac_addr[4] |
+ (qp->dev->nic_info.mac_addr[5] << 8);
+ }
+ if ((attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY) &&
+ attrs->en_sqd_async_notify) {
+ cmd->params.max_sge_recv_flags |=
+ OCRDMA_QP_PARAMS_FLAGS_SQD_ASYNC;
+ cmd->flags |= OCRDMA_QP_PARA_DST_QPN_VALID;
+ }
+ if (attr_mask & IB_QP_DEST_QPN) {
+ cmd->params.ack_to_rnr_rtc_dest_qpn |= (attrs->dest_qp_num &
+ OCRDMA_QP_PARAMS_DEST_QPN_MASK);
+ cmd->flags |= OCRDMA_QP_PARA_DST_QPN_VALID;
+ }
+ if (attr_mask & IB_QP_PATH_MTU) {
+ if (ib_mtu_enum_to_int(eth_mtu) <
+ ib_mtu_enum_to_int(attrs->path_mtu)) {
+ status = -EINVAL;
+ goto pmtu_err;
+ }
+ cmd->params.path_mtu_pkey_indx |=
+ (ib_mtu_enum_to_int(attrs->path_mtu) <<
+ OCRDMA_QP_PARAMS_PATH_MTU_SHIFT) &
+ OCRDMA_QP_PARAMS_PATH_MTU_MASK;
+ cmd->flags |= OCRDMA_QP_PARA_PMTU_VALID;
+ }
+ if (attr_mask & IB_QP_TIMEOUT) {
+ cmd->params.ack_to_rnr_rtc_dest_qpn |= attrs->timeout <<
+ OCRDMA_QP_PARAMS_ACK_TIMEOUT_SHIFT;
+ cmd->flags |= OCRDMA_QP_PARA_ACK_TO_VALID;
+ }
+ if (attr_mask & IB_QP_RETRY_CNT) {
+ cmd->params.rnt_rc_sl_fl |= (attrs->retry_cnt <<
+ OCRDMA_QP_PARAMS_RETRY_CNT_SHIFT) &
+ OCRDMA_QP_PARAMS_RETRY_CNT_MASK;
+ cmd->flags |= OCRDMA_QP_PARA_RETRY_CNT_VALID;
+ }
+ if (attr_mask & IB_QP_MIN_RNR_TIMER) {
+ cmd->params.rnt_rc_sl_fl |= (attrs->min_rnr_timer <<
+ OCRDMA_QP_PARAMS_RNR_NAK_TIMER_SHIFT) &
+ OCRDMA_QP_PARAMS_RNR_NAK_TIMER_MASK;
+ cmd->flags |= OCRDMA_QP_PARA_RNT_VALID;
+ }
+ if (attr_mask & IB_QP_RNR_RETRY) {
+ cmd->params.ack_to_rnr_rtc_dest_qpn |= (attrs->rnr_retry <<
+ OCRDMA_QP_PARAMS_RNR_RETRY_CNT_SHIFT)
+ & OCRDMA_QP_PARAMS_RNR_RETRY_CNT_MASK;
+ cmd->flags |= OCRDMA_QP_PARA_RRC_VALID;
+ }
+ if (attr_mask & IB_QP_SQ_PSN) {
+ cmd->params.tclass_sq_psn |= (attrs->sq_psn & 0x00ffffff);
+ cmd->flags |= OCRDMA_QP_PARA_SQPSN_VALID;
+ }
+ if (attr_mask & IB_QP_RQ_PSN) {
+ cmd->params.hop_lmt_rq_psn |= (attrs->rq_psn & 0x00ffffff);
+ cmd->flags |= OCRDMA_QP_PARA_RQPSN_VALID;
+ }
+ if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) {
+ if (attrs->max_rd_atomic > qp->dev->attr.max_ord_per_qp) {
+ status = -EINVAL;
+ goto pmtu_err;
+ }
+ qp->max_ord = attrs->max_rd_atomic;
+ cmd->flags |= OCRDMA_QP_PARA_MAX_ORD_VALID;
+ }
+ if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) {
+ if (attrs->max_dest_rd_atomic > qp->dev->attr.max_ird_per_qp) {
+ status = -EINVAL;
+ goto pmtu_err;
+ }
+ qp->max_ird = attrs->max_dest_rd_atomic;
+ cmd->flags |= OCRDMA_QP_PARA_MAX_IRD_VALID;
+ }
+ cmd->params.max_ord_ird = (qp->max_ord <<
+ OCRDMA_QP_PARAMS_MAX_ORD_SHIFT) |
+ (qp->max_ird & OCRDMA_QP_PARAMS_MAX_IRD_MASK);
+pmtu_err:
+ return status;
+}
+
+int ocrdma_mbx_modify_qp(struct ocrdma_dev *dev, struct ocrdma_qp *qp,
+ struct ib_qp_attr *attrs, int attr_mask,
+ enum ib_qp_state old_qps)
+{
+ int status = -ENOMEM;
+ struct ocrdma_modify_qp *cmd;
+ struct ocrdma_modify_qp_rsp *rsp;
+
+ cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_MODIFY_QP, sizeof(*cmd));
+ if (!cmd)
+ return status;
+
+ cmd->params.id = qp->id;
+ cmd->flags = 0;
+ if (attr_mask & IB_QP_STATE) {
+ cmd->params.max_sge_recv_flags |=
+ (get_ocrdma_qp_state(attrs->qp_state) <<
+ OCRDMA_QP_PARAMS_STATE_SHIFT) &
+ OCRDMA_QP_PARAMS_STATE_MASK;
+ cmd->flags |= OCRDMA_QP_PARA_QPS_VALID;
+ } else
+ cmd->params.max_sge_recv_flags |=
+ (qp->state << OCRDMA_QP_PARAMS_STATE_SHIFT) &
+ OCRDMA_QP_PARAMS_STATE_MASK;
+ status = ocrdma_set_qp_params(qp, cmd, attrs, attr_mask, old_qps);
+ if (status)
+ goto mbx_err;
+ status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
+ if (status)
+ goto mbx_err;
+ rsp = (struct ocrdma_modify_qp_rsp *)cmd;
+mbx_err:
+ kfree(cmd);
+ return status;
+}
+
+int ocrdma_mbx_destroy_qp(struct ocrdma_dev *dev, struct ocrdma_qp *qp)
+{
+ int status = -ENOMEM;
+ struct ocrdma_destroy_qp *cmd;
+ struct ocrdma_destroy_qp_rsp *rsp;
+ struct pci_dev *pdev = dev->nic_info.pdev;
+
+ cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DELETE_QP, sizeof(*cmd));
+ if (!cmd)
+ return status;
+ cmd->qp_id = qp->id;
+ status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
+ if (status)
+ goto mbx_err;
+ rsp = (struct ocrdma_destroy_qp_rsp *)cmd;
+mbx_err:
+ kfree(cmd);
+ if (qp->sq.va)
+ dma_free_coherent(&pdev->dev, qp->sq.len, qp->sq.va, qp->sq.pa);
+ if (!qp->srq && qp->rq.va)
+ dma_free_coherent(&pdev->dev, qp->rq.len, qp->rq.va, qp->rq.pa);
+ if (qp->dpp_enabled)
+ qp->pd->num_dpp_qp++;
+ return status;
+}
+
+int ocrdma_mbx_create_srq(struct ocrdma_srq *srq,
+ struct ib_srq_init_attr *srq_attr,
+ struct ocrdma_pd *pd)
+{
+ int status = -ENOMEM;
+ int hw_pages, hw_page_size;
+ int len;
+ struct ocrdma_create_srq_rsp *rsp;
+ struct ocrdma_create_srq *cmd;
+ dma_addr_t pa;
+ struct ocrdma_dev *dev = srq->dev;
+ struct pci_dev *pdev = dev->nic_info.pdev;
+ u32 max_rqe_allocated;
+
+ cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_CREATE_SRQ, sizeof(*cmd));
+ if (!cmd)
+ return status;
+
+ cmd->pgsz_pdid = pd->id & OCRDMA_CREATE_SRQ_PD_ID_MASK;
+ max_rqe_allocated = srq_attr->attr.max_wr + 1;
+ status = ocrdma_build_q_conf(&max_rqe_allocated,
+ dev->attr.rqe_size,
+ &hw_pages, &hw_page_size);
+ if (status) {
+ ocrdma_err("%s() req. max_wr=0x%x\n", __func__,
+ srq_attr->attr.max_wr);
+ status = -EINVAL;
+ goto ret;
+ }
+ len = hw_pages * hw_page_size;
+ srq->rq.va = dma_alloc_coherent(&pdev->dev, len, &pa, GFP_KERNEL);
+ if (!srq->rq.va) {
+ status = -ENOMEM;
+ goto ret;
+ }
+ ocrdma_build_q_pages(&cmd->rq_addr[0], hw_pages, pa, hw_page_size);
+
+ srq->rq.entry_size = dev->attr.rqe_size;
+ srq->rq.pa = pa;
+ srq->rq.len = len;
+ srq->rq.max_cnt = max_rqe_allocated;
+
+ cmd->max_sge_rqe = ilog2(max_rqe_allocated);
+ cmd->max_sge_rqe |= srq_attr->attr.max_sge <<
+ OCRDMA_CREATE_SRQ_MAX_SGE_RECV_SHIFT;
+
+ cmd->pgsz_pdid |= (ilog2(hw_page_size / OCRDMA_MIN_Q_PAGE_SIZE)
+ << OCRDMA_CREATE_SRQ_PG_SZ_SHIFT);
+ cmd->pages_rqe_sz |= (dev->attr.rqe_size
+ << OCRDMA_CREATE_SRQ_RQE_SIZE_SHIFT)
+ & OCRDMA_CREATE_SRQ_RQE_SIZE_MASK;
+ cmd->pages_rqe_sz |= hw_pages << OCRDMA_CREATE_SRQ_NUM_RQ_PAGES_SHIFT;
+
+ status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
+ if (status)
+ goto mbx_err;
+ rsp = (struct ocrdma_create_srq_rsp *)cmd;
+ srq->id = rsp->id;
+ srq->rq.dbid = rsp->id;
+ max_rqe_allocated = ((rsp->max_sge_rqe_allocated &
+ OCRDMA_CREATE_SRQ_RSP_MAX_RQE_ALLOCATED_MASK) >>
+ OCRDMA_CREATE_SRQ_RSP_MAX_RQE_ALLOCATED_SHIFT);
+ max_rqe_allocated = (1 << max_rqe_allocated);
+ srq->rq.max_cnt = max_rqe_allocated;
+ srq->rq.max_wqe_idx = max_rqe_allocated - 1;
+ srq->rq.max_sges = (rsp->max_sge_rqe_allocated &
+ OCRDMA_CREATE_SRQ_RSP_MAX_SGE_RECV_ALLOCATED_MASK) >>
+ OCRDMA_CREATE_SRQ_RSP_MAX_SGE_RECV_ALLOCATED_SHIFT;
+ goto ret;
+mbx_err:
+ dma_free_coherent(&pdev->dev, srq->rq.len, srq->rq.va, pa);
+ret:
+ kfree(cmd);
+ return status;
+}
+
+int ocrdma_mbx_modify_srq(struct ocrdma_srq *srq, struct ib_srq_attr *srq_attr)
+{
+ int status = -ENOMEM;
+ struct ocrdma_modify_srq *cmd;
+ cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_CREATE_SRQ, sizeof(*cmd));
+ if (!cmd)
+ return status;
+ cmd->id = srq->id;
+ cmd->limit_max_rqe |= srq_attr->srq_limit <<
+ OCRDMA_MODIFY_SRQ_LIMIT_SHIFT;
+ status = ocrdma_mbx_cmd(srq->dev, (struct ocrdma_mqe *)cmd);
+ kfree(cmd);
+ return status;
+}
+
+int ocrdma_mbx_query_srq(struct ocrdma_srq *srq, struct ib_srq_attr *srq_attr)
+{
+ int status = -ENOMEM;
+ struct ocrdma_query_srq *cmd;
+ cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_CREATE_SRQ, sizeof(*cmd));
+ if (!cmd)
+ return status;
+ cmd->id = srq->rq.dbid;
+ status = ocrdma_mbx_cmd(srq->dev, (struct ocrdma_mqe *)cmd);
+ if (status == 0) {
+ struct ocrdma_query_srq_rsp *rsp =
+ (struct ocrdma_query_srq_rsp *)cmd;
+ srq_attr->max_sge =
+ rsp->srq_lmt_max_sge &
+ OCRDMA_QUERY_SRQ_RSP_MAX_SGE_RECV_MASK;
+ srq_attr->max_wr =
+ rsp->max_rqe_pdid >> OCRDMA_QUERY_SRQ_RSP_MAX_RQE_SHIFT;
+ srq_attr->srq_limit = rsp->srq_lmt_max_sge >>
+ OCRDMA_QUERY_SRQ_RSP_SRQ_LIMIT_SHIFT;
+ }
+ kfree(cmd);
+ return status;
+}
+
+int ocrdma_mbx_destroy_srq(struct ocrdma_dev *dev, struct ocrdma_srq *srq)
+{
+ int status = -ENOMEM;
+ struct ocrdma_destroy_srq *cmd;
+ struct pci_dev *pdev = dev->nic_info.pdev;
+ cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DELETE_SRQ, sizeof(*cmd));
+ if (!cmd)
+ return status;
+ cmd->id = srq->id;
+ status = ocrdma_mbx_cmd(srq->dev, (struct ocrdma_mqe *)cmd);
+ if (srq->rq.va)
+ dma_free_coherent(&pdev->dev, srq->rq.len,
+ srq->rq.va, srq->rq.pa);
+ kfree(cmd);
+ return status;
+}
+
+int ocrdma_alloc_av(struct ocrdma_dev *dev, struct ocrdma_ah *ah)
+{
+ int i;
+ int status = -EINVAL;
+ struct ocrdma_av *av;
+ unsigned long flags;
+
+ av = dev->av_tbl.va;
+ spin_lock_irqsave(&dev->av_tbl.lock, flags);
+ for (i = 0; i < dev->av_tbl.num_ah; i++) {
+ if (av->valid == 0) {
+ av->valid = OCRDMA_AV_VALID;
+ ah->av = av;
+ ah->id = i;
+ status = 0;
+ break;
+ }
+ av++;
+ }
+ if (i == dev->av_tbl.num_ah)
+ status = -EAGAIN;
+ spin_unlock_irqrestore(&dev->av_tbl.lock, flags);
+ return status;
+}
+
+int ocrdma_free_av(struct ocrdma_dev *dev, struct ocrdma_ah *ah)
+{
+ unsigned long flags;
+ spin_lock_irqsave(&dev->av_tbl.lock, flags);
+ ah->av->valid = 0;
+ spin_unlock_irqrestore(&dev->av_tbl.lock, flags);
+ return 0;
+}
+
+static int ocrdma_create_mq_eq(struct ocrdma_dev *dev)
+{
+ int status;
+ int irq;
+ unsigned long flags = 0;
+ int num_eq = 0;
+
+ if (dev->nic_info.intr_mode == BE_INTERRUPT_MODE_INTX)
+ flags = IRQF_SHARED;
+ else {
+ num_eq = dev->nic_info.msix.num_vectors -
+ dev->nic_info.msix.start_vector;
+ /* minimum two vectors/eq are required for rdma to work.
+ * one for control path and one for data path.
+ */
+ if (num_eq < 2)
+ return -EBUSY;
+ }
+
+ status = ocrdma_create_eq(dev, &dev->meq, OCRDMA_EQ_LEN);
+ if (status)
+ return status;
+ sprintf(dev->meq.irq_name, "ocrdma_mq%d", dev->id);
+ irq = ocrdma_get_irq(dev, &dev->meq);
+ status = request_irq(irq, ocrdma_irq_handler, flags, dev->meq.irq_name,
+ &dev->meq);
+ if (status)
+ _ocrdma_destroy_eq(dev, &dev->meq);
+ return status;
+}
+
+static int ocrdma_create_qp_eqs(struct ocrdma_dev *dev)
+{
+ int num_eq, i, status;
+ int irq;
+ unsigned long flags = 0;
+
+ num_eq = dev->nic_info.msix.num_vectors -
+ dev->nic_info.msix.start_vector;
+ if (dev->nic_info.intr_mode == BE_INTERRUPT_MODE_INTX) {
+ num_eq = 1;
+ flags = IRQF_SHARED;
+ } else
+ num_eq = min_t(u32, num_eq, num_online_cpus());
+ dev->qp_eq_tbl = kzalloc(sizeof(struct ocrdma_eq) * num_eq, GFP_KERNEL);
+ if (!dev->qp_eq_tbl)
+ return -ENOMEM;
+
+ for (i = 0; i < num_eq; i++) {
+ status = ocrdma_create_eq(dev, &dev->qp_eq_tbl[i],
+ OCRDMA_EQ_LEN);
+ if (status) {
+ status = -EINVAL;
+ break;
+ }
+ sprintf(dev->qp_eq_tbl[i].irq_name, "ocrdma_qp%d-%d",
+ dev->id, i);
+ irq = ocrdma_get_irq(dev, &dev->qp_eq_tbl[i]);
+ status = request_irq(irq, ocrdma_irq_handler, flags,
+ dev->qp_eq_tbl[i].irq_name,
+ &dev->qp_eq_tbl[i]);
+ if (status) {
+ _ocrdma_destroy_eq(dev, &dev->qp_eq_tbl[i]);
+ status = -EINVAL;
+ break;
+ }
+ dev->eq_cnt += 1;
+ }
+ /* one eq is sufficient for data path to work */
+ if (dev->eq_cnt >= 1)
+ return 0;
+ if (status)
+ ocrdma_destroy_qp_eqs(dev);
+ return status;
+}
+
+int ocrdma_init_hw(struct ocrdma_dev *dev)
+{
+ int status;
+ /* set up control path eq */
+ status = ocrdma_create_mq_eq(dev);
+ if (status)
+ return status;
+ /* set up data path eq */
+ status = ocrdma_create_qp_eqs(dev);
+ if (status)
+ goto qpeq_err;
+ status = ocrdma_create_mq(dev);
+ if (status)
+ goto mq_err;
+ status = ocrdma_mbx_query_fw_config(dev);
+ if (status)
+ goto conf_err;
+ status = ocrdma_mbx_query_dev(dev);
+ if (status)
+ goto conf_err;
+ status = ocrdma_mbx_query_fw_ver(dev);
+ if (status)
+ goto conf_err;
+ status = ocrdma_mbx_create_ah_tbl(dev);
+ if (status)
+ goto conf_err;
+ return 0;
+
+conf_err:
+ ocrdma_destroy_mq(dev);
+mq_err:
+ ocrdma_destroy_qp_eqs(dev);
+qpeq_err:
+ ocrdma_destroy_eq(dev, &dev->meq);
+ ocrdma_err("%s() status=%d\n", __func__, status);
+ return status;
+}
+
+void ocrdma_cleanup_hw(struct ocrdma_dev *dev)
+{
+ ocrdma_mbx_delete_ah_tbl(dev);
+
+ /* cleanup the data path eqs */
+ ocrdma_destroy_qp_eqs(dev);
+
+ /* cleanup the control path */
+ ocrdma_destroy_mq(dev);
+ ocrdma_destroy_eq(dev, &dev->meq);
+}