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mirror_ubuntu-kernels/drivers/infiniband/hw/ocrdma/ocrdma_hw.c

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/* This file is part of the Emulex RoCE Device Driver for
* RoCE (RDMA over Converged Ethernet) adapters.
* Copyright (C) 2012-2015 Emulex. All rights reserved.
* EMULEX and SLI are trademarks of Emulex.
* www.emulex.com
*
* 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 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* 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 <linux/if_ether.h>
#include <rdma/ib_verbs.h>
#include <rdma/ib_user_verbs.h>
#include <rdma/ib_cache.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 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 *)
(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 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);
}
static inline void *ocrdma_get_mqe_rsp(struct ocrdma_dev *dev)
{
return 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;
}
static 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;
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;
}
break;
default:
err_num = -EFAULT;
}
return err_num;
}
char *port_speed_string(struct ocrdma_dev *dev)
{
char *str = "";
u16 speeds_supported;
speeds_supported = dev->phy.fixed_speeds_supported |
dev->phy.auto_speeds_supported;
if (speeds_supported & OCRDMA_PHY_SPEED_40GBPS)
str = "40Gbps ";
else if (speeds_supported & OCRDMA_PHY_SPEED_10GBPS)
str = "10Gbps ";
else if (speeds_supported & OCRDMA_PHY_SPEED_1GBPS)
str = "1Gbps ";
return str;
}
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 = -EINVAL;
break;
case OCRDMA_MBX_CQE_STATUS_DMA_FAILED:
default:
err_num = -EINVAL;
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;
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 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));
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;
eq->vector = (rsp->vector_eqid >> 16) & 0xffff;
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;
}
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);
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_eqs(struct ocrdma_dev *dev)
{
int i;
for (i = 0; i < dev->eq_cnt; i++)
ocrdma_destroy_eq(dev, &dev->eq_tbl[i]);
}
static 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->req.rsvd_version = OCRDMA_CREATE_CQ_VER2;
cmd->pgsz_pgcnt = (cq->size / OCRDMA_MIN_Q_PAGE_SIZE) <<
OCRDMA_CREATE_CQ_PAGE_SIZE_SHIFT;
cmd->pgsz_pgcnt |= PAGES_4K_SPANNED(cq->va, cq->size);
cmd->ev_cnt_flags = OCRDMA_CREATE_CQ_DEF_FLAGS;
cmd->eqn = eq->id;
cmd->pdid_cqecnt = cq->size / sizeof(struct ocrdma_mcqe);
ocrdma_build_q_pages(&cmd->pa[0], cq->size / OCRDMA_MIN_Q_PAGE_SIZE,
cq->dma, PAGE_SIZE_4K);
status = be_roce_mcc_cmd(dev->nic_info.netdev,
cmd, sizeof(*cmd), NULL, NULL);
if (!status) {
cq->id = (u16) (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);
ocrdma_init_mch(&cmd->req, OCRDMA_CMD_CREATE_MQ_EXT,
OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
cmd->req.rsvd_version = 1;
cmd->cqid_pages = num_pages;
cmd->cqid_pages |= (cq->id << OCRDMA_CREATE_MQ_CQ_ID_SHIFT);
cmd->async_cqid_valid = OCRDMA_CREATE_MQ_ASYNC_CQ_VALID;
cmd->async_event_bitmap = BIT(OCRDMA_ASYNC_GRP5_EVE_CODE);
cmd->async_event_bitmap |= BIT(OCRDMA_ASYNC_RDMA_EVE_CODE);
/* Request link events on this MQ. */
cmd->async_event_bitmap |= BIT(OCRDMA_ASYNC_LINK_EVE_CODE);
cmd->async_cqid_ringsize = cq->id;
cmd->async_cqid_ringsize |= (ocrdma_encoded_q_len(mq->len) <<
OCRDMA_CREATE_MQ_RING_SIZE_SHIFT);
cmd->valid = OCRDMA_CREATE_MQ_VALID;
pa = &cmd->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;
dev->eq_tbl[0].cq_cnt++;
status = ocrdma_mbx_mq_cq_create(dev, &dev->mq.cq, &dev->eq_tbl[0].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_change(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;
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;
u16 qpid = cqe->qpvalid_qpid & OCRDMA_AE_MCQE_QPID_MASK;
u16 cqid = cqe->cqvalid_cqid & OCRDMA_AE_MCQE_CQID_MASK;
/*
* Some FW version returns wrong qp or cq ids in CQEs.
* Checking whether the IDs are valid
*/
if (cqe->qpvalid_qpid & OCRDMA_AE_MCQE_QPVALID) {
if (qpid < dev->attr.max_qp)
qp = dev->qp_tbl[qpid];
if (qp == NULL) {
pr_err("ocrdma%d:Async event - qpid %u is not valid\n",
dev->id, qpid);
return;
}
}
if (cqe->cqvalid_cqid & OCRDMA_AE_MCQE_CQVALID) {
if (cqid < dev->attr.max_cq)
cq = dev->cq_tbl[cqid];
if (cq == NULL) {
pr_err("ocrdma%d:Async event - cqid %u is not valid\n",
dev->id, cqid);
return;
}
}
memset(&ib_evt, 0, sizeof(ib_evt));
ib_evt.device = &dev->ibdev;
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;
cq_event = 1;
qp_event = 0;
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_SRQ_LIMIT_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;
pr_err("%s() unknown type=0x%x\n", __func__, type);
break;
}
if (type < OCRDMA_MAX_ASYNC_ERRORS)
atomic_inc(&dev->async_err_stats[type]);
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) {
dev_err(&dev->ibdev.dev, "Fatal event received\n");
ib_dispatch_event(&ib_evt);
}
}
static void ocrdma_process_grp5_aync(struct ocrdma_dev *dev,
struct ocrdma_ae_mcqe *cqe)
{
struct ocrdma_ae_pvid_mcqe *evt;
int type = (cqe->valid_ae_event & OCRDMA_AE_MCQE_EVENT_TYPE_MASK) >>
OCRDMA_AE_MCQE_EVENT_TYPE_SHIFT;
switch (type) {
case OCRDMA_ASYNC_EVENT_PVID_STATE:
evt = (struct ocrdma_ae_pvid_mcqe *)cqe;
if ((evt->tag_enabled & OCRDMA_AE_PVID_MCQE_ENABLED_MASK) >>
OCRDMA_AE_PVID_MCQE_ENABLED_SHIFT)
dev->pvid = ((evt->tag_enabled &
OCRDMA_AE_PVID_MCQE_TAG_MASK) >>
OCRDMA_AE_PVID_MCQE_TAG_SHIFT);
break;
case OCRDMA_ASYNC_EVENT_COS_VALUE:
atomic_set(&dev->update_sl, 1);
break;
default:
/* Not interested evts. */
break;
}
}
static void ocrdma_process_link_state(struct ocrdma_dev *dev,
struct ocrdma_ae_mcqe *cqe)
{
struct ocrdma_ae_lnkst_mcqe *evt;
u8 lstate;
evt = (struct ocrdma_ae_lnkst_mcqe *)cqe;
lstate = ocrdma_get_ae_link_state(evt->speed_state_ptn);
if (!(lstate & OCRDMA_AE_LSC_LLINK_MASK))
return;
if (dev->flags & OCRDMA_FLAGS_LINK_STATUS_INIT)
ocrdma_update_link_state(dev, (lstate & OCRDMA_LINK_ST_MASK));
}
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;
switch (evt_code) {
case OCRDMA_ASYNC_LINK_EVE_CODE:
ocrdma_process_link_state(dev, cqe);
break;
case OCRDMA_ASYNC_RDMA_EVE_CODE:
ocrdma_dispatch_ibevent(dev, cqe);
break;
case OCRDMA_ASYNC_GRP5_EVE_CODE:
ocrdma_process_grp5_aync(dev, cqe);
break;
default:
pr_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
pr_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);
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 struct ocrdma_cq *_ocrdma_qp_buddy_cq_handler(struct ocrdma_dev *dev,
struct ocrdma_cq *cq, bool sq)
{
struct ocrdma_qp *qp;
struct list_head *cur;
struct ocrdma_cq *bcq = NULL;
struct list_head *head = sq?(&cq->sq_head):(&cq->rq_head);
list_for_each(cur, head) {
if (sq)
qp = list_entry(cur, struct ocrdma_qp, sq_entry);
else
qp = list_entry(cur, struct ocrdma_qp, rq_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)
bcq = qp->rq_cq;
else
bcq = qp->sq_cq;
return bcq;
}
return NULL;
}
static void ocrdma_qp_buddy_cq_handler(struct ocrdma_dev *dev,
struct ocrdma_cq *cq)
{
unsigned long flags;
struct ocrdma_cq *bcq = NULL;
/* 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);
/* Check if buddy CQ is present.
* true - Check for SQ CQ
* false - Check for RQ CQ
*/
bcq = _ocrdma_qp_buddy_cq_handler(dev, cq, true);
if (bcq == NULL)
bcq = _ocrdma_qp_buddy_cq_handler(dev, cq, false);
spin_unlock_irqrestore(&dev->flush_q_lock, flags);
/* if there is valid buddy cq, look for its completion handler */
if (bcq && bcq->ibcq.comp_handler) {
spin_lock_irqsave(&bcq->comp_handler_lock, flags);
(*bcq->ibcq.comp_handler) (&bcq->ibcq, bcq->ibcq.cq_context);
spin_unlock_irqrestore(&bcq->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)
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);
}
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 cq_id;
u8 mcode;
int budget = eq->cq_cnt;
do {
ptr = ocrdma_get_eqe(eq);
eqe = *ptr;
ocrdma_le32_to_cpu(&eqe, sizeof(eqe));
mcode = (eqe.id_valid & OCRDMA_EQE_MAJOR_CODE_MASK)
>> OCRDMA_EQE_MAJOR_CODE_SHIFT;
if (mcode == OCRDMA_MAJOR_CODE_SENTINAL)
pr_err("EQ full on eqid = 0x%x, eqe = 0x%x\n",
eq->q.id, eqe.id_valid);
if ((eqe.id_valid & OCRDMA_EQE_VALID_MASK) == 0)
break;
ptr->id_valid = 0;
/* ring eq doorbell as soon as its consumed. */
ocrdma_ring_eq_db(dev, eq->q.id, false, true, 1);
/* 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);
/* There can be a stale EQE after the last bound CQ is
* destroyed. EQE valid and budget == 0 implies this.
*/
if (budget)
budget--;
} while (budget);
eq->aic_obj.eq_intr_cnt++;
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 {
dev->mqe_ctx.fw_error_state = true;
pr_err("%s(%d) mailbox timeout: fw not responding\n",
__func__, dev->id);
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_mqe;
struct ocrdma_mbx_rsp *rsp = NULL;
mutex_lock(&dev->mqe_ctx.lock);
if (dev->mqe_ctx.fw_error_state)
goto mbx_err;
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_mqe = ocrdma_get_mqe_rsp(dev);
ocrdma_copy_le32_to_cpu(mqe, rsp_mqe, (sizeof(*mqe)));
if ((mqe->hdr.spcl_sge_cnt_emb & OCRDMA_MQE_HDR_EMB_MASK) >>
OCRDMA_MQE_HDR_EMB_SHIFT)
rsp = &mqe->u.rsp;
if (cqe_status || ext_status) {
pr_err("%s() cqe_status=0x%x, ext_status=0x%x,\n",
__func__, cqe_status, ext_status);
if (rsp) {
/* This is for embedded cmds. */
pr_err("opcode=0x%x, subsystem=0x%x\n",
(rsp->subsys_op & OCRDMA_MBX_RSP_OPCODE_MASK) >>
OCRDMA_MBX_RSP_OPCODE_SHIFT,
(rsp->subsys_op & OCRDMA_MBX_RSP_SUBSYS_MASK) >>
OCRDMA_MBX_RSP_SUBSYS_SHIFT);
}
status = ocrdma_get_mbx_cqe_errno(cqe_status);
goto mbx_err;
}
/* For non embedded, rsp errors are handled in ocrdma_nonemb_mbx_cmd */
if (rsp && (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 int ocrdma_nonemb_mbx_cmd(struct ocrdma_dev *dev, struct ocrdma_mqe *mqe,
void *payload_va)
{
int status;
struct ocrdma_mbx_rsp *rsp = payload_va;
if ((mqe->hdr.spcl_sge_cnt_emb & OCRDMA_MQE_HDR_EMB_MASK) >>
OCRDMA_MQE_HDR_EMB_SHIFT)
BUG();
status = ocrdma_mbx_cmd(dev, mqe);
if (!status)
/* For non embedded, only CQE failures are handled in
* ocrdma_mbx_cmd. We need to check for RSP errors.
*/
if (rsp->status & OCRDMA_MBX_RSP_STATUS_MASK)
status = ocrdma_get_mbx_errno(rsp->status);
if (status)
pr_err("opcode=0x%x, subsystem=0x%x\n",
(rsp->subsys_op & OCRDMA_MBX_RSP_OPCODE_MASK) >>
OCRDMA_MBX_RSP_OPCODE_SHIFT,
(rsp->subsys_op & OCRDMA_MBX_RSP_SUBSYS_MASK) >>
OCRDMA_MBX_RSP_SUBSYS_SHIFT);
return status;
}
static void ocrdma_get_attr(struct ocrdma_dev *dev,
struct ocrdma_dev_attr *attr,
struct ocrdma_mbx_query_config *rsp)
{
attr->max_pd =
(rsp->max_pd_ca_ack_delay & OCRDMA_MBX_QUERY_CFG_MAX_PD_MASK) >>
OCRDMA_MBX_QUERY_CFG_MAX_PD_SHIFT;
attr->udp_encap = (rsp->max_pd_ca_ack_delay &
OCRDMA_MBX_QUERY_CFG_L3_TYPE_MASK) >>
OCRDMA_MBX_QUERY_CFG_L3_TYPE_SHIFT;
attr->max_dpp_pds =
(rsp->max_dpp_pds_credits & OCRDMA_MBX_QUERY_CFG_MAX_DPP_PDS_MASK) >>
OCRDMA_MBX_QUERY_CFG_MAX_DPP_PDS_OFFSET;
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_srq =
(rsp->max_srq_rpir_qps & OCRDMA_MBX_QUERY_CFG_MAX_SRQ_MASK) >>
OCRDMA_MBX_QUERY_CFG_MAX_SRQ_OFFSET;
attr->max_send_sge = ((rsp->max_recv_send_sge &
OCRDMA_MBX_QUERY_CFG_MAX_SEND_SGE_MASK) >>
OCRDMA_MBX_QUERY_CFG_MAX_SEND_SGE_SHIFT);
attr->max_recv_sge = (rsp->max_recv_send_sge &
OCRDMA_MBX_QUERY_CFG_MAX_RECV_SGE_MASK) >>
OCRDMA_MBX_QUERY_CFG_MAX_RECV_SGE_SHIFT;
attr->max_srq_sge = (rsp->max_srq_rqe_sge &
OCRDMA_MBX_QUERY_CFG_MAX_SRQ_SGE_MASK) >>
OCRDMA_MBX_QUERY_CFG_MAX_SRQ_SGE_OFFSET;
attr->max_rdma_sge = (rsp->max_wr_rd_sge &
OCRDMA_MBX_QUERY_CFG_MAX_RD_SGE_MASK) >>
OCRDMA_MBX_QUERY_CFG_MAX_RD_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_mw = rsp->max_mw;
attr->max_mr = rsp->max_mr;
attr->max_mr_size = ((u64)rsp->max_mr_size_hi << 32) |
rsp->max_mr_size_lo;
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->max_cq = (rsp->max_cq_cqes_per_cq &
OCRDMA_MBX_QUERY_CFG_MAX_CQ_MASK) >>
OCRDMA_MBX_QUERY_CFG_MAX_CQ_OFFSET;
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));
if (ocrdma_get_asic_type(dev) == OCRDMA_ASIC_GEN_SKH_R) {
attr->ird = 1;
attr->ird_page_size = OCRDMA_MIN_Q_PAGE_SIZE;
attr->num_ird_pages = MAX_OCRDMA_IRD_PAGES;
}
dev->attr.max_wqe = rsp->max_wqes_rqes_per_q >>
OCRDMA_MBX_QUERY_CFG_MAX_WQES_PER_WQ_OFFSET;
dev->attr.max_rqe = rsp->max_wqes_rqes_per_q &
OCRDMA_MBX_QUERY_CFG_MAX_RQES_PER_RQ_MASK;
}
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;
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;
}
int ocrdma_mbx_rdma_stats(struct ocrdma_dev *dev, bool reset)
{
struct ocrdma_rdma_stats_req *req = dev->stats_mem.va;
struct ocrdma_mqe *mqe = &dev->stats_mem.mqe;
struct ocrdma_rdma_stats_resp *old_stats;
int status;
old_stats = kmalloc(sizeof(*old_stats), GFP_KERNEL);
if (old_stats == NULL)
return -ENOMEM;
memset(mqe, 0, sizeof(*mqe));
mqe->hdr.pyld_len = dev->stats_mem.size;
mqe->hdr.spcl_sge_cnt_emb |=
(1 << OCRDMA_MQE_HDR_SGE_CNT_SHIFT) &
OCRDMA_MQE_HDR_SGE_CNT_MASK;
mqe->u.nonemb_req.sge[0].pa_lo = (u32) (dev->stats_mem.pa & 0xffffffff);
mqe->u.nonemb_req.sge[0].pa_hi = (u32) upper_32_bits(dev->stats_mem.pa);
mqe->u.nonemb_req.sge[0].len = dev->stats_mem.size;
/* Cache the old stats */
memcpy(old_stats, req, sizeof(struct ocrdma_rdma_stats_resp));
memset(req, 0, dev->stats_mem.size);
ocrdma_init_mch((struct ocrdma_mbx_hdr *)req,
OCRDMA_CMD_GET_RDMA_STATS,
OCRDMA_SUBSYS_ROCE,
dev->stats_mem.size);
if (reset)
req->reset_stats = reset;
status = ocrdma_nonemb_mbx_cmd(dev, mqe, dev->stats_mem.va);
if (status)
/* Copy from cache, if mbox fails */
memcpy(req, old_stats, sizeof(struct ocrdma_rdma_stats_resp));
else
ocrdma_le32_to_cpu(req, dev->stats_mem.size);
kfree(old_stats);
return status;
}
static int ocrdma_mbx_get_ctrl_attribs(struct ocrdma_dev *dev)
{
int status = -ENOMEM;
struct ocrdma_dma_mem dma;
struct ocrdma_mqe *mqe;
struct ocrdma_get_ctrl_attribs_rsp *ctrl_attr_rsp;
struct mgmt_hba_attribs *hba_attribs;
mqe = kzalloc(sizeof(struct ocrdma_mqe), GFP_KERNEL);
if (!mqe)
return status;
dma.size = sizeof(struct ocrdma_get_ctrl_attribs_rsp);
dma.va = dma_alloc_coherent(&dev->nic_info.pdev->dev,
dma.size, &dma.pa, GFP_KERNEL);
if (!dma.va)
goto free_mqe;
mqe->hdr.pyld_len = dma.size;
mqe->hdr.spcl_sge_cnt_emb |=
(1 << OCRDMA_MQE_HDR_SGE_CNT_SHIFT) &
OCRDMA_MQE_HDR_SGE_CNT_MASK;
mqe->u.nonemb_req.sge[0].pa_lo = (u32) (dma.pa & 0xffffffff);
mqe->u.nonemb_req.sge[0].pa_hi = (u32) upper_32_bits(dma.pa);
mqe->u.nonemb_req.sge[0].len = dma.size;
ocrdma_init_mch((struct ocrdma_mbx_hdr *)dma.va,
OCRDMA_CMD_GET_CTRL_ATTRIBUTES,
OCRDMA_SUBSYS_COMMON,
dma.size);
status = ocrdma_nonemb_mbx_cmd(dev, mqe, dma.va);
if (!status) {
ctrl_attr_rsp = (struct ocrdma_get_ctrl_attribs_rsp *)dma.va;
hba_attribs = &ctrl_attr_rsp->ctrl_attribs.hba_attribs;
dev->hba_port_num = (hba_attribs->ptpnum_maxdoms_hbast_cv &
OCRDMA_HBA_ATTRB_PTNUM_MASK)
>> OCRDMA_HBA_ATTRB_PTNUM_SHIFT;
strscpy(dev->model_number,
hba_attribs->controller_model_number,
sizeof(dev->model_number));
}
dma_free_coherent(&dev->nic_info.pdev->dev, dma.size, dma.va, dma.pa);
free_mqe:
kfree(mqe);
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_get_link_speed(struct ocrdma_dev *dev, u8 *lnk_speed,
u8 *lnk_state)
{
int status = -ENOMEM;
struct ocrdma_get_link_speed_rsp *rsp;
struct ocrdma_mqe *cmd;
cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_QUERY_NTWK_LINK_CONFIG_V1,
sizeof(*cmd));
if (!cmd)
return status;
ocrdma_init_mch((struct ocrdma_mbx_hdr *)&cmd->u.cmd[0],
OCRDMA_CMD_QUERY_NTWK_LINK_CONFIG_V1,
OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
((struct ocrdma_mbx_hdr *)cmd->u.cmd)->rsvd_version = 0x1;
status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
if (status)
goto mbx_err;
rsp = (struct ocrdma_get_link_speed_rsp *)cmd;
if (lnk_speed)
*lnk_speed = (rsp->pflt_pps_ld_pnum & OCRDMA_PHY_PS_MASK)
>> OCRDMA_PHY_PS_SHIFT;
if (lnk_state)
*lnk_state = (rsp->res_lnk_st & OCRDMA_LINK_ST_MASK);
mbx_err:
kfree(cmd);
return status;
}
static int ocrdma_mbx_get_phy_info(struct ocrdma_dev *dev)
{
int status = -ENOMEM;
struct ocrdma_mqe *cmd;
struct ocrdma_get_phy_info_rsp *rsp;
cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_PHY_DETAILS, sizeof(*cmd));
if (!cmd)
return status;
ocrdma_init_mch((struct ocrdma_mbx_hdr *)&cmd->u.cmd[0],
OCRDMA_CMD_PHY_DETAILS, OCRDMA_SUBSYS_COMMON,
sizeof(*cmd));
status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
if (status)
goto mbx_err;
rsp = (struct ocrdma_get_phy_info_rsp *)cmd;
dev->phy.phy_type =
(rsp->ityp_ptyp & OCRDMA_PHY_TYPE_MASK);
dev->phy.interface_type =
(rsp->ityp_ptyp & OCRDMA_IF_TYPE_MASK)
>> OCRDMA_IF_TYPE_SHIFT;
dev->phy.auto_speeds_supported =
(rsp->fspeed_aspeed & OCRDMA_ASPEED_SUPP_MASK);
dev->phy.fixed_speeds_supported =
(rsp->fspeed_aspeed & OCRDMA_FSPEED_SUPP_MASK)
>> OCRDMA_FSPEED_SUPP_SHIFT;
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_mbx_alloc_pd_range(struct ocrdma_dev *dev)
{
int status = -ENOMEM;
struct ocrdma_alloc_pd_range *cmd;
struct ocrdma_alloc_pd_range_rsp *rsp;
/* Pre allocate the DPP PDs */
if (dev->attr.max_dpp_pds) {
cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_ALLOC_PD_RANGE,
sizeof(*cmd));
if (!cmd)
return -ENOMEM;
cmd->pd_count = dev->attr.max_dpp_pds;
cmd->enable_dpp_rsvd |= OCRDMA_ALLOC_PD_ENABLE_DPP;
status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
rsp = (struct ocrdma_alloc_pd_range_rsp *)cmd;
if (!status && (rsp->dpp_page_pdid & OCRDMA_ALLOC_PD_RSP_DPP) &&
rsp->pd_count) {
dev->pd_mgr->dpp_page_index = rsp->dpp_page_pdid >>
OCRDMA_ALLOC_PD_RSP_DPP_PAGE_SHIFT;
dev->pd_mgr->pd_dpp_start = rsp->dpp_page_pdid &
OCRDMA_ALLOC_PD_RNG_RSP_START_PDID_MASK;
dev->pd_mgr->max_dpp_pd = rsp->pd_count;
dev->pd_mgr->pd_dpp_bitmap = bitmap_zalloc(rsp->pd_count,
GFP_KERNEL);
}
kfree(cmd);
}
cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_ALLOC_PD_RANGE, sizeof(*cmd));
if (!cmd)
return -ENOMEM;
cmd->pd_count = dev->attr.max_pd - dev->attr.max_dpp_pds;
status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
rsp = (struct ocrdma_alloc_pd_range_rsp *)cmd;
if (!status && rsp->pd_count) {
dev->pd_mgr->pd_norm_start = rsp->dpp_page_pdid &
OCRDMA_ALLOC_PD_RNG_RSP_START_PDID_MASK;
dev->pd_mgr->max_normal_pd = rsp->pd_count;
dev->pd_mgr->pd_norm_bitmap = bitmap_zalloc(rsp->pd_count,
GFP_KERNEL);
}
kfree(cmd);
if (dev->pd_mgr->pd_norm_bitmap || dev->pd_mgr->pd_dpp_bitmap) {
/* Enable PD resource manager */
dev->pd_mgr->pd_prealloc_valid = true;
return 0;
}
return status;
}
static void ocrdma_mbx_dealloc_pd_range(struct ocrdma_dev *dev)
{
struct ocrdma_dealloc_pd_range *cmd;
/* return normal PDs to firmware */
cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DEALLOC_PD_RANGE, sizeof(*cmd));
if (!cmd)
goto mbx_err;
if (dev->pd_mgr->max_normal_pd) {
cmd->start_pd_id = dev->pd_mgr->pd_norm_start;
cmd->pd_count = dev->pd_mgr->max_normal_pd;
ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
}
if (dev->pd_mgr->max_dpp_pd) {
kfree(cmd);
/* return DPP PDs to firmware */
cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DEALLOC_PD_RANGE,
sizeof(*cmd));
if (!cmd)
goto mbx_err;
cmd->start_pd_id = dev->pd_mgr->pd_dpp_start;
cmd->pd_count = dev->pd_mgr->max_dpp_pd;
ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
}
mbx_err:
kfree(cmd);
}
void ocrdma_alloc_pd_pool(struct ocrdma_dev *dev)
{
int status;
dev->pd_mgr = kzalloc(sizeof(struct ocrdma_pd_resource_mgr),
GFP_KERNEL);
if (!dev->pd_mgr)
return;
status = ocrdma_mbx_alloc_pd_range(dev);
if (status) {
pr_err("%s(%d) Unable to initialize PD pool, using default.\n",
__func__, dev->id);
}
}
static void ocrdma_free_pd_pool(struct ocrdma_dev *dev)
{
ocrdma_mbx_dealloc_pd_range(dev);
bitmap_free(dev->pd_mgr->pd_norm_bitmap);
bitmap_free(dev->pd_mgr->pd_dpp_bitmap);
kfree(dev->pd_mgr);
}
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 = -ENOMEM;
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;
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)cpu_to_le32(pa & 0xffffffff);
pbes[i].pa_hi = (u32)cpu_to_le32(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);
dev->av_tbl.va = NULL;
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->eq_tbl[0].cq_cnt;
eq_id = dev->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->eq_tbl[i].cq_cnt < cq_cnt) {
cq_cnt = dev->eq_tbl[i].cq_cnt;
eq_id = dev->eq_tbl[i].q.id;
selected_eq = i;
}
}
dev->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);
i = ocrdma_get_eq_table_index(dev, eq_id);
if (i == -EINVAL)
BUG();
dev->eq_tbl[i].cq_cnt -= 1;
mutex_unlock(&dev->dev_lock);
}
int ocrdma_mbx_create_cq(struct ocrdma_dev *dev, struct ocrdma_cq *cq,
int entries, int dpp_cq, u16 pd_id)
{
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 (entries > dev->attr.max_cqe) {
pr_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 && (ocrdma_get_asic_type(dev) != OCRDMA_ASIC_GEN_SKH_R))
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;
}
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;
cq->eqn = ocrdma_bind_eq(dev);
cmd->cmd.req.rsvd_version = OCRDMA_CREATE_CQ_VER3;
cqe_count = cq->len / cqe_size;
cq->cqe_cnt = cqe_count;
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 (ocrdma_get_asic_type(dev) == OCRDMA_ASIC_GEN_SKH_R) {
if (dpp_cq)
cmd->cmd.pgsz_pgcnt |= OCRDMA_CREATE_CQ_DPP <<
OCRDMA_CREATE_CQ_TYPE_SHIFT;
cq->phase_change = false;
cmd->cmd.pdid_cqecnt = (cq->len / cqe_size);
} else {
cmd->cmd.pdid_cqecnt = (cq->len / cqe_size) - 1;
cmd->cmd.ev_cnt_flags |= OCRDMA_CREATE_CQ_FLAGS_AUTO_VALID;
cq->phase_change = true;
}
/* pd_id valid only for v3 */
cmd->cmd.pdid_cqecnt |= (pd_id <<
OCRDMA_CREATE_CQ_CMD_PDID_SHIFT);
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);
dma_free_coherent(&pdev->dev, cq->len, cq->va, cq->pa);
mem_err:
kfree(cmd);
return status;
}
void ocrdma_mbx_destroy_cq(struct ocrdma_dev *dev, struct ocrdma_cq *cq)
{
struct ocrdma_destroy_cq *cmd;
cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DELETE_CQ, sizeof(*cmd));
if (!cmd)
return;
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_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
ocrdma_unbind_eq(dev, cq->eqn);
dma_free_coherent(&dev->nic_info.pdev->dev, cq->len, cq->va, cq->pa);
kfree(cmd);
}
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;
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);
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;
u64 fbo = hwmr->va & (hwmr->pbe_size - 1);
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->fr_mr = hwmr->fr_mr;
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 = lower_32_bits(fbo);
cmd->fbo_high = upper_32_bits(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;
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);
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) {
pr_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)
pr_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;
struct ocrdma_dev *dev = get_ocrdma_dev(qp->ibqp.device);
spin_lock_irqsave(&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(&dev->flush_q_lock, flags);
}
static void ocrdma_init_hwq_ptr(struct ocrdma_qp *qp)
{
qp->sq.head = 0;
qp->sq.tail = 0;
qp->rq.head = 0;
qp->rq.tail = 0;
}
int ocrdma_qp_state_change(struct ocrdma_qp *qp, enum ib_qp_state new_ib_state,
enum ib_qp_state *old_ib_state)
{
unsigned long flags;
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;
}
if (new_state == OCRDMA_QPS_INIT) {
ocrdma_init_hwq_ptr(qp);
ocrdma_del_flush_qp(qp);
} else if (new_state == OCRDMA_QPS_ERR) {
ocrdma_flush_qp(qp);
}
qp->state = new_state;
spin_unlock_irqrestore(&qp->q_lock, flags);
return 0;
}
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_pd *pd = qp->pd;
struct ocrdma_dev *dev = get_ocrdma_dev(pd->ibpd.device);
struct pci_dev *pdev = dev->nic_info.pdev;
u32 max_wqe_allocated;
u32 max_sges = attrs->cap.max_send_sge;
/* QP1 may exceed 127 */
max_wqe_allocated = min_t(u32, attrs->cap.max_send_wr + 1,
dev->attr.max_wqe);
status = ocrdma_build_q_conf(&max_wqe_allocated,
dev->attr.wqe_size, &hw_pages, &hw_page_size);
if (status) {
pr_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;
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_pd *pd = qp->pd;
struct ocrdma_dev *dev = get_ocrdma_dev(pd->ibpd.device);
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) {
pr_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 -ENOMEM;
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_pd *pd = qp->pd;
struct ocrdma_dev *dev = get_ocrdma_dev(pd->ibpd.device);
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;
struct ocrdma_hdr_wqe *rqe;
int i = 0;
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;
ocrdma_build_q_pages(&cmd->ird_addr[0], dev->attr.num_ird_pages,
pa, ird_page_size);
for (; i < ird_q_len / dev->attr.rqe_size; i++) {
rqe = (struct ocrdma_hdr_wqe *)(qp->ird_q_va +
(i * dev->attr.rqe_size));
rqe->cw = 0;
rqe->cw |= 2;
rqe->cw |= (OCRDMA_TYPE_LKEY << OCRDMA_WQE_TYPE_SHIFT);
rqe->cw |= (8 << OCRDMA_WQE_SIZE_SHIFT);
rqe->cw |= (8 << OCRDMA_WQE_NXT_WQE_SIZE_SHIFT);
}
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);
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;
}
}
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_pd *pd = qp->pd;
struct ocrdma_dev *dev = get_ocrdma_dev(pd->ibpd.device);
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:
pr_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:
pr_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(*rsp));
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;
}
static int ocrdma_set_av_params(struct ocrdma_qp *qp,
struct ocrdma_modify_qp *cmd,
struct ib_qp_attr *attrs,
int attr_mask)
{
int status;
struct rdma_ah_attr *ah_attr = &attrs->ah_attr;
const struct ib_gid_attr *sgid_attr;
u16 vlan_id = 0xFFFF;
u8 mac_addr[6], hdr_type;
union {
struct sockaddr_in _sockaddr_in;
struct sockaddr_in6 _sockaddr_in6;
} sgid_addr, dgid_addr;
struct ocrdma_dev *dev = get_ocrdma_dev(qp->ibqp.device);
const struct ib_global_route *grh;
if ((rdma_ah_get_ah_flags(ah_attr) & IB_AH_GRH) == 0)
return -EINVAL;
grh = rdma_ah_read_grh(ah_attr);
if (atomic_cmpxchg(&dev->update_sl, 1, 0))
ocrdma_init_service_level(dev);
cmd->params.tclass_sq_psn |=
(grh->traffic_class << OCRDMA_QP_PARAMS_TCLASS_SHIFT);
cmd->params.rnt_rc_sl_fl |=
(grh->flow_label & OCRDMA_QP_PARAMS_FLOW_LABEL_MASK);
cmd->params.rnt_rc_sl_fl |= (rdma_ah_get_sl(ah_attr) <<
OCRDMA_QP_PARAMS_SL_SHIFT);
cmd->params.hop_lmt_rq_psn |=
(grh->hop_limit << OCRDMA_QP_PARAMS_HOP_LMT_SHIFT);
cmd->flags |= OCRDMA_QP_PARA_FLOW_LBL_VALID;
/* GIDs */
memcpy(&cmd->params.dgid[0], &grh->dgid.raw[0],
sizeof(cmd->params.dgid));
sgid_attr = ah_attr->grh.sgid_attr;
status = rdma_read_gid_l2_fields(sgid_attr, &vlan_id, &mac_addr[0]);
if (status)
return status;
qp->sgid_idx = grh->sgid_index;
memcpy(&cmd->params.sgid[0], &sgid_attr->gid.raw[0],
sizeof(cmd->params.sgid));
status = ocrdma_resolve_dmac(dev, ah_attr, &mac_addr[0]);
if (status)
return status;
cmd->params.dmac_b0_to_b3 = mac_addr[0] | (mac_addr[1] << 8) |
(mac_addr[2] << 16) | (mac_addr[3] << 24);
hdr_type = rdma_gid_attr_network_type(sgid_attr);
if (hdr_type == RDMA_NETWORK_IPV4) {
rdma_gid2ip((struct sockaddr *)&sgid_addr, &sgid_attr->gid);
rdma_gid2ip((struct sockaddr *)&dgid_addr, &grh->dgid);
memcpy(&cmd->params.dgid[0],
&dgid_addr._sockaddr_in.sin_addr.s_addr, 4);
memcpy(&cmd->params.sgid[0],
&sgid_addr._sockaddr_in.sin_addr.s_addr, 4);
}
/* 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);
if (vlan_id == 0xFFFF)
vlan_id = 0;
if (vlan_id || dev->pfc_state) {
if (!vlan_id) {
pr_err("ocrdma%d:Using VLAN with PFC is recommended\n",
dev->id);
pr_err("ocrdma%d:Using VLAN 0 for this connection\n",
dev->id);
}
cmd->params.vlan_dmac_b4_to_b5 |=
vlan_id << OCRDMA_QP_PARAMS_VLAN_SHIFT;
cmd->flags |= OCRDMA_QP_PARA_VLAN_EN_VALID;
cmd->params.rnt_rc_sl_fl |=
(dev->sl & 0x07) << OCRDMA_QP_PARAMS_SL_SHIFT;
}
cmd->params.max_sge_recv_flags |= ((hdr_type <<
OCRDMA_QP_PARAMS_FLAGS_L3_TYPE_SHIFT) &
OCRDMA_QP_PARAMS_FLAGS_L3_TYPE_MASK);
return 0;
}
static int ocrdma_set_qp_params(struct ocrdma_qp *qp,
struct ocrdma_modify_qp *cmd,
struct ib_qp_attr *attrs, int attr_mask)
{
int status = 0;
struct ocrdma_dev *dev = get_ocrdma_dev(qp->ibqp.device);
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) {
status = ocrdma_set_av_params(qp, cmd, attrs, attr_mask);
if (status)
return status;
} 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 = dev->nic_info.mac_addr[0] |
(dev->nic_info.mac_addr[1] << 8) |
(dev->nic_info.mac_addr[2] << 16) |
(dev->nic_info.mac_addr[3] << 24);
cmd->params.vlan_dmac_b4_to_b5 = dev->nic_info.mac_addr[4] |
(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 (attrs->path_mtu < IB_MTU_512 ||
attrs->path_mtu > IB_MTU_4096) {
pr_err("ocrdma%d: IB MTU %d is not supported\n",
dev->id, 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 > 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 > 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)
{
int status = -ENOMEM;
struct ocrdma_modify_qp *cmd;
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);
if (status)
goto mbx_err;
status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
if (status)
goto mbx_err;
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 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;
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_dev *dev, 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 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) {
pr_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;
struct ocrdma_pd *pd = srq->pd;
struct ocrdma_dev *dev = get_ocrdma_dev(pd->ibpd.device);
cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_MODIFY_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(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;
struct ocrdma_dev *dev = get_ocrdma_dev(srq->ibsrq.device);
cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_QUERY_SRQ, sizeof(*cmd));
if (!cmd)
return status;
cmd->id = srq->rq.dbid;
status = ocrdma_mbx_cmd(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;
}
void ocrdma_mbx_destroy_srq(struct ocrdma_dev *dev, struct ocrdma_srq *srq)
{
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;
cmd->id = srq->id;
ocrdma_mbx_cmd(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);
}
static int ocrdma_mbx_get_dcbx_config(struct ocrdma_dev *dev, u32 ptype,
struct ocrdma_dcbx_cfg *dcbxcfg)
{
int status;
dma_addr_t pa;
struct ocrdma_mqe cmd;
struct ocrdma_get_dcbx_cfg_req *req = NULL;
struct ocrdma_get_dcbx_cfg_rsp *rsp = NULL;
struct pci_dev *pdev = dev->nic_info.pdev;
struct ocrdma_mqe_sge *mqe_sge = cmd.u.nonemb_req.sge;
memset(&cmd, 0, sizeof(struct ocrdma_mqe));
cmd.hdr.pyld_len = max_t (u32, sizeof(struct ocrdma_get_dcbx_cfg_rsp),
sizeof(struct ocrdma_get_dcbx_cfg_req));
req = dma_alloc_coherent(&pdev->dev, cmd.hdr.pyld_len, &pa, GFP_KERNEL);
if (!req) {
status = -ENOMEM;
goto mem_err;
}
cmd.hdr.spcl_sge_cnt_emb |= (1 << OCRDMA_MQE_HDR_SGE_CNT_SHIFT) &
OCRDMA_MQE_HDR_SGE_CNT_MASK;
mqe_sge->pa_lo = (u32) (pa & 0xFFFFFFFFUL);
mqe_sge->pa_hi = (u32) upper_32_bits(pa);
mqe_sge->len = cmd.hdr.pyld_len;
ocrdma_init_mch(&req->hdr, OCRDMA_CMD_GET_DCBX_CONFIG,
OCRDMA_SUBSYS_DCBX, cmd.hdr.pyld_len);
req->param_type = ptype;
status = ocrdma_mbx_cmd(dev, &cmd);
if (status)
goto mbx_err;
rsp = (struct ocrdma_get_dcbx_cfg_rsp *)req;
ocrdma_le32_to_cpu(rsp, sizeof(struct ocrdma_get_dcbx_cfg_rsp));
memcpy(dcbxcfg, &rsp->cfg, sizeof(struct ocrdma_dcbx_cfg));
mbx_err:
dma_free_coherent(&pdev->dev, cmd.hdr.pyld_len, req, pa);
mem_err:
return status;
}
#define OCRDMA_MAX_SERVICE_LEVEL_INDEX 0x08
#define OCRDMA_DEFAULT_SERVICE_LEVEL 0x05
static int ocrdma_parse_dcbxcfg_rsp(struct ocrdma_dev *dev, int ptype,
struct ocrdma_dcbx_cfg *dcbxcfg,
u8 *srvc_lvl)
{
int status = -EINVAL, indx, slindx;
int ventry_cnt;
struct ocrdma_app_parameter *app_param;
u8 valid, proto_sel;
u8 app_prio, pfc_prio;
u16 proto;
if (!(dcbxcfg->tcv_aev_opv_st & OCRDMA_DCBX_STATE_MASK)) {
pr_info("%s ocrdma%d DCBX is disabled\n",
dev_name(&dev->nic_info.pdev->dev), dev->id);
goto out;
}
if (!ocrdma_is_enabled_and_synced(dcbxcfg->pfc_state)) {
pr_info("%s ocrdma%d priority flow control(%s) is %s%s\n",
dev_name(&dev->nic_info.pdev->dev), dev->id,
(ptype > 0 ? "operational" : "admin"),
(dcbxcfg->pfc_state & OCRDMA_STATE_FLAG_ENABLED) ?
"enabled" : "disabled",
(dcbxcfg->pfc_state & OCRDMA_STATE_FLAG_SYNC) ?
"" : ", not sync'ed");
goto out;
} else {
pr_info("%s ocrdma%d priority flow control is enabled and sync'ed\n",
dev_name(&dev->nic_info.pdev->dev), dev->id);
}
ventry_cnt = (dcbxcfg->tcv_aev_opv_st >>
OCRDMA_DCBX_APP_ENTRY_SHIFT)
& OCRDMA_DCBX_STATE_MASK;
for (indx = 0; indx < ventry_cnt; indx++) {
app_param = &dcbxcfg->app_param[indx];
valid = (app_param->valid_proto_app >>
OCRDMA_APP_PARAM_VALID_SHIFT)
& OCRDMA_APP_PARAM_VALID_MASK;
proto_sel = (app_param->valid_proto_app
>> OCRDMA_APP_PARAM_PROTO_SEL_SHIFT)
& OCRDMA_APP_PARAM_PROTO_SEL_MASK;
proto = app_param->valid_proto_app &
OCRDMA_APP_PARAM_APP_PROTO_MASK;
if (
valid && proto == ETH_P_IBOE &&
proto_sel == OCRDMA_PROTO_SELECT_L2) {
for (slindx = 0; slindx <
OCRDMA_MAX_SERVICE_LEVEL_INDEX; slindx++) {
app_prio = ocrdma_get_app_prio(
(u8 *)app_param->app_prio,
slindx);
pfc_prio = ocrdma_get_pfc_prio(
(u8 *)dcbxcfg->pfc_prio,
slindx);
if (app_prio && pfc_prio) {
*srvc_lvl = slindx;
status = 0;
goto out;
}
}
if (slindx == OCRDMA_MAX_SERVICE_LEVEL_INDEX) {
pr_info("%s ocrdma%d application priority not set for 0x%x protocol\n",
dev_name(&dev->nic_info.pdev->dev),
dev->id, proto);
}
}
}
out:
return status;
}
void ocrdma_init_service_level(struct ocrdma_dev *dev)
{
int status = 0, indx;
struct ocrdma_dcbx_cfg dcbxcfg;
u8 srvc_lvl = OCRDMA_DEFAULT_SERVICE_LEVEL;
int ptype = OCRDMA_PARAMETER_TYPE_OPER;
for (indx = 0; indx < 2; indx++) {
status = ocrdma_mbx_get_dcbx_config(dev, ptype, &dcbxcfg);
if (status) {
pr_err("%s(): status=%d\n", __func__, status);
ptype = OCRDMA_PARAMETER_TYPE_ADMIN;
continue;
}
status = ocrdma_parse_dcbxcfg_rsp(dev, ptype,
&dcbxcfg, &srvc_lvl);
if (status) {
ptype = OCRDMA_PARAMETER_TYPE_ADMIN;
continue;
}
break;
}
if (status)
pr_info("%s ocrdma%d service level default\n",
dev_name(&dev->nic_info.pdev->dev), dev->id);
else
pr_info("%s ocrdma%d service level %d\n",
dev_name(&dev->nic_info.pdev->dev), dev->id,
srvc_lvl);
dev->pfc_state = ocrdma_is_enabled_and_synced(dcbxcfg.pfc_state);
dev->sl = srvc_lvl;
}
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;
}
void 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);
}
static int ocrdma_create_eqs(struct ocrdma_dev *dev)
{
int num_eq, i, status = 0;
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());
}
if (!num_eq)
return -EINVAL;
dev->eq_tbl = kcalloc(num_eq, sizeof(struct ocrdma_eq), GFP_KERNEL);
if (!dev->eq_tbl)
return -ENOMEM;
for (i = 0; i < num_eq; i++) {
status = ocrdma_create_eq(dev, &dev->eq_tbl[i],
OCRDMA_EQ_LEN);
if (status) {
status = -EINVAL;
break;
}
sprintf(dev->eq_tbl[i].irq_name, "ocrdma%d-%d",
dev->id, i);
irq = ocrdma_get_irq(dev, &dev->eq_tbl[i]);
status = request_irq(irq, ocrdma_irq_handler, flags,
dev->eq_tbl[i].irq_name,
&dev->eq_tbl[i]);
if (status)
goto done;
dev->eq_cnt += 1;
}
/* one eq is sufficient for data path to work */
return 0;
done:
ocrdma_destroy_eqs(dev);
return status;
}
static int ocrdma_mbx_modify_eqd(struct ocrdma_dev *dev, struct ocrdma_eq *eq,
int num)
{
int i, status;
struct ocrdma_modify_eqd_req *cmd;
cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_MODIFY_EQ_DELAY, sizeof(*cmd));
if (!cmd)
return -ENOMEM;
ocrdma_init_mch(&cmd->cmd.req, OCRDMA_CMD_MODIFY_EQ_DELAY,
OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
cmd->cmd.num_eq = num;
for (i = 0; i < num; i++) {
cmd->cmd.set_eqd[i].eq_id = eq[i].q.id;
cmd->cmd.set_eqd[i].phase = 0;
cmd->cmd.set_eqd[i].delay_multiplier =
(eq[i].aic_obj.prev_eqd * 65)/100;
}
status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
kfree(cmd);
return status;
}
static int ocrdma_modify_eqd(struct ocrdma_dev *dev, struct ocrdma_eq *eq,
int num)
{
int num_eqs, i = 0;
if (num > 8) {
while (num) {
num_eqs = min(num, 8);
ocrdma_mbx_modify_eqd(dev, &eq[i], num_eqs);
i += num_eqs;
num -= num_eqs;
}
} else {
ocrdma_mbx_modify_eqd(dev, eq, num);
}
return 0;
}
void ocrdma_eqd_set_task(struct work_struct *work)
{
struct ocrdma_dev *dev =
container_of(work, struct ocrdma_dev, eqd_work.work);
struct ocrdma_eq *eq = NULL;
int i, num = 0;
u64 eq_intr;
for (i = 0; i < dev->eq_cnt; i++) {
eq = &dev->eq_tbl[i];
if (eq->aic_obj.eq_intr_cnt > eq->aic_obj.prev_eq_intr_cnt) {
eq_intr = eq->aic_obj.eq_intr_cnt -
eq->aic_obj.prev_eq_intr_cnt;
if ((eq_intr > EQ_INTR_PER_SEC_THRSH_HI) &&
(eq->aic_obj.prev_eqd == EQ_AIC_MIN_EQD)) {
eq->aic_obj.prev_eqd = EQ_AIC_MAX_EQD;
num++;
} else if ((eq_intr < EQ_INTR_PER_SEC_THRSH_LOW) &&
(eq->aic_obj.prev_eqd == EQ_AIC_MAX_EQD)) {
eq->aic_obj.prev_eqd = EQ_AIC_MIN_EQD;
num++;
}
}
eq->aic_obj.prev_eq_intr_cnt = eq->aic_obj.eq_intr_cnt;
}
if (num)
ocrdma_modify_eqd(dev, &dev->eq_tbl[0], num);
schedule_delayed_work(&dev->eqd_work, msecs_to_jiffies(1000));
}
int ocrdma_init_hw(struct ocrdma_dev *dev)
{
int status;
/* create the eqs */
status = ocrdma_create_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;
status = ocrdma_mbx_get_phy_info(dev);
if (status)
goto info_attrb_err;
status = ocrdma_mbx_get_ctrl_attribs(dev);
if (status)
goto info_attrb_err;
return 0;
info_attrb_err:
ocrdma_mbx_delete_ah_tbl(dev);
conf_err:
ocrdma_destroy_mq(dev);
mq_err:
ocrdma_destroy_eqs(dev);
qpeq_err:
pr_err("%s() status=%d\n", __func__, status);
return status;
}
void ocrdma_cleanup_hw(struct ocrdma_dev *dev)
{
ocrdma_free_pd_pool(dev);
ocrdma_mbx_delete_ah_tbl(dev);
/* cleanup the control path */
ocrdma_destroy_mq(dev);
/* cleanup the eqs */
ocrdma_destroy_eqs(dev);
}
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