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linux_dsm_epyc7002/drivers/infiniband/hw/bnxt_re/qplib_fp.c
Selvin Xavier 1ac5a40479 RDMA/bnxt_re: Add bnxt_re RoCE driver 
This patch introduces the RoCE driver for the Broadcom
NetXtreme-E 10/25/40/50G RoCE HCAs.

The RoCE driver is a two part driver that relies on the parent
bnxt_en NIC driver to operate.  The changes needed in the bnxt_en
driver have already been incorporated via Dave Miller's net tree
into the mainline kernel.

The vendor official git repository for this driver is available
on github as:
https://github.com/Broadcom/linux-rdma-nxt/

Signed-off-by: Eddie Wai <eddie.wai@broadcom.com>
Signed-off-by: Devesh Sharma <devesh.sharma@broadcom.com>
Signed-off-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-02-14 09:51:15 -05:00

2168 lines
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/*
* Broadcom NetXtreme-E RoCE driver.
*
* Copyright (c) 2016 - 2017, Broadcom. All rights reserved. The term
* Broadcom refers to Broadcom Limited and/or its subsidiaries.
*
* 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:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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 AUTHOR 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 AUTHOR 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.
*
* Description: Fast Path Operators
*/
#include <linux/interrupt.h>
#include <linux/spinlock.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/prefetch.h>
#include "roce_hsi.h"
#include "qplib_res.h"
#include "qplib_rcfw.h"
#include "qplib_sp.h"
#include "qplib_fp.h"
static void bnxt_qplib_arm_cq_enable(struct bnxt_qplib_cq *cq);
static void bnxt_qplib_free_qp_hdr_buf(struct bnxt_qplib_res *res,
struct bnxt_qplib_qp *qp)
{
struct bnxt_qplib_q *rq = &qp->rq;
struct bnxt_qplib_q *sq = &qp->sq;
if (qp->rq_hdr_buf)
dma_free_coherent(&res->pdev->dev,
rq->hwq.max_elements * qp->rq_hdr_buf_size,
qp->rq_hdr_buf, qp->rq_hdr_buf_map);
if (qp->sq_hdr_buf)
dma_free_coherent(&res->pdev->dev,
sq->hwq.max_elements * qp->sq_hdr_buf_size,
qp->sq_hdr_buf, qp->sq_hdr_buf_map);
qp->rq_hdr_buf = NULL;
qp->sq_hdr_buf = NULL;
qp->rq_hdr_buf_map = 0;
qp->sq_hdr_buf_map = 0;
qp->sq_hdr_buf_size = 0;
qp->rq_hdr_buf_size = 0;
}
static int bnxt_qplib_alloc_qp_hdr_buf(struct bnxt_qplib_res *res,
struct bnxt_qplib_qp *qp)
{
struct bnxt_qplib_q *rq = &qp->rq;
struct bnxt_qplib_q *sq = &qp->rq;
int rc = 0;
if (qp->sq_hdr_buf_size && sq->hwq.max_elements) {
qp->sq_hdr_buf = dma_alloc_coherent(&res->pdev->dev,
sq->hwq.max_elements *
qp->sq_hdr_buf_size,
&qp->sq_hdr_buf_map, GFP_KERNEL);
if (!qp->sq_hdr_buf) {
rc = -ENOMEM;
dev_err(&res->pdev->dev,
"QPLIB: Failed to create sq_hdr_buf");
goto fail;
}
}
if (qp->rq_hdr_buf_size && rq->hwq.max_elements) {
qp->rq_hdr_buf = dma_alloc_coherent(&res->pdev->dev,
rq->hwq.max_elements *
qp->rq_hdr_buf_size,
&qp->rq_hdr_buf_map,
GFP_KERNEL);
if (!qp->rq_hdr_buf) {
rc = -ENOMEM;
dev_err(&res->pdev->dev,
"QPLIB: Failed to create rq_hdr_buf");
goto fail;
}
}
return 0;
fail:
bnxt_qplib_free_qp_hdr_buf(res, qp);
return rc;
}
static void bnxt_qplib_service_nq(unsigned long data)
{
struct bnxt_qplib_nq *nq = (struct bnxt_qplib_nq *)data;
struct bnxt_qplib_hwq *hwq = &nq->hwq;
struct nq_base *nqe, **nq_ptr;
int num_cqne_processed = 0;
u32 sw_cons, raw_cons;
u16 type;
int budget = nq->budget;
u64 q_handle;
/* Service the NQ until empty */
raw_cons = hwq->cons;
while (budget--) {
sw_cons = HWQ_CMP(raw_cons, hwq);
nq_ptr = (struct nq_base **)hwq->pbl_ptr;
nqe = &nq_ptr[NQE_PG(sw_cons)][NQE_IDX(sw_cons)];
if (!NQE_CMP_VALID(nqe, raw_cons, hwq->max_elements))
break;
type = le16_to_cpu(nqe->info10_type) & NQ_BASE_TYPE_MASK;
switch (type) {
case NQ_BASE_TYPE_CQ_NOTIFICATION:
{
struct nq_cn *nqcne = (struct nq_cn *)nqe;
q_handle = le32_to_cpu(nqcne->cq_handle_low);
q_handle |= (u64)le32_to_cpu(nqcne->cq_handle_high)
<< 32;
bnxt_qplib_arm_cq_enable((struct bnxt_qplib_cq *)
((unsigned long)q_handle));
if (!nq->cqn_handler(nq, (struct bnxt_qplib_cq *)
((unsigned long)q_handle)))
num_cqne_processed++;
else
dev_warn(&nq->pdev->dev,
"QPLIB: cqn - type 0x%x not handled",
type);
break;
}
case NQ_BASE_TYPE_DBQ_EVENT:
break;
default:
dev_warn(&nq->pdev->dev,
"QPLIB: nqe with type = 0x%x not handled",
type);
break;
}
raw_cons++;
}
if (hwq->cons != raw_cons) {
hwq->cons = raw_cons;
NQ_DB_REARM(nq->bar_reg_iomem, hwq->cons, hwq->max_elements);
}
}
static irqreturn_t bnxt_qplib_nq_irq(int irq, void *dev_instance)
{
struct bnxt_qplib_nq *nq = dev_instance;
struct bnxt_qplib_hwq *hwq = &nq->hwq;
struct nq_base **nq_ptr;
u32 sw_cons;
/* Prefetch the NQ element */
sw_cons = HWQ_CMP(hwq->cons, hwq);
nq_ptr = (struct nq_base **)nq->hwq.pbl_ptr;
prefetch(&nq_ptr[NQE_PG(sw_cons)][NQE_IDX(sw_cons)]);
/* Fan out to CPU affinitized kthreads? */
tasklet_schedule(&nq->worker);
return IRQ_HANDLED;
}
void bnxt_qplib_disable_nq(struct bnxt_qplib_nq *nq)
{
/* Make sure the HW is stopped! */
synchronize_irq(nq->vector);
tasklet_disable(&nq->worker);
tasklet_kill(&nq->worker);
if (nq->requested) {
free_irq(nq->vector, nq);
nq->requested = false;
}
if (nq->bar_reg_iomem)
iounmap(nq->bar_reg_iomem);
nq->bar_reg_iomem = NULL;
nq->cqn_handler = NULL;
nq->srqn_handler = NULL;
nq->vector = 0;
}
int bnxt_qplib_enable_nq(struct pci_dev *pdev, struct bnxt_qplib_nq *nq,
int msix_vector, int bar_reg_offset,
int (*cqn_handler)(struct bnxt_qplib_nq *nq,
struct bnxt_qplib_cq *),
int (*srqn_handler)(struct bnxt_qplib_nq *nq,
void *, u8 event))
{
resource_size_t nq_base;
int rc;
nq->pdev = pdev;
nq->vector = msix_vector;
nq->cqn_handler = cqn_handler;
nq->srqn_handler = srqn_handler;
tasklet_init(&nq->worker, bnxt_qplib_service_nq, (unsigned long)nq);
nq->requested = false;
rc = request_irq(nq->vector, bnxt_qplib_nq_irq, 0, "bnxt_qplib_nq", nq);
if (rc) {
dev_err(&nq->pdev->dev,
"Failed to request IRQ for NQ: %#x", rc);
bnxt_qplib_disable_nq(nq);
goto fail;
}
nq->requested = true;
nq->bar_reg = NQ_CONS_PCI_BAR_REGION;
nq->bar_reg_off = bar_reg_offset;
nq_base = pci_resource_start(pdev, nq->bar_reg);
if (!nq_base) {
rc = -ENOMEM;
goto fail;
}
nq->bar_reg_iomem = ioremap_nocache(nq_base + nq->bar_reg_off, 4);
if (!nq->bar_reg_iomem) {
rc = -ENOMEM;
goto fail;
}
NQ_DB_REARM(nq->bar_reg_iomem, nq->hwq.cons, nq->hwq.max_elements);
return 0;
fail:
bnxt_qplib_disable_nq(nq);
return rc;
}
void bnxt_qplib_free_nq(struct bnxt_qplib_nq *nq)
{
if (nq->hwq.max_elements)
bnxt_qplib_free_hwq(nq->pdev, &nq->hwq);
}
int bnxt_qplib_alloc_nq(struct pci_dev *pdev, struct bnxt_qplib_nq *nq)
{
nq->pdev = pdev;
if (!nq->hwq.max_elements ||
nq->hwq.max_elements > BNXT_QPLIB_NQE_MAX_CNT)
nq->hwq.max_elements = BNXT_QPLIB_NQE_MAX_CNT;
if (bnxt_qplib_alloc_init_hwq(nq->pdev, &nq->hwq, NULL, 0,
&nq->hwq.max_elements,
BNXT_QPLIB_MAX_NQE_ENTRY_SIZE, 0,
PAGE_SIZE, HWQ_TYPE_L2_CMPL))
return -ENOMEM;
nq->budget = 8;
return 0;
}
/* QP */
int bnxt_qplib_create_qp1(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
{
struct bnxt_qplib_rcfw *rcfw = res->rcfw;
struct cmdq_create_qp1 req;
struct creq_create_qp1_resp *resp;
struct bnxt_qplib_pbl *pbl;
struct bnxt_qplib_q *sq = &qp->sq;
struct bnxt_qplib_q *rq = &qp->rq;
int rc;
u16 cmd_flags = 0;
u32 qp_flags = 0;
RCFW_CMD_PREP(req, CREATE_QP1, cmd_flags);
/* General */
req.type = qp->type;
req.dpi = cpu_to_le32(qp->dpi->dpi);
req.qp_handle = cpu_to_le64(qp->qp_handle);
/* SQ */
sq->hwq.max_elements = sq->max_wqe;
rc = bnxt_qplib_alloc_init_hwq(res->pdev, &sq->hwq, NULL, 0,
&sq->hwq.max_elements,
BNXT_QPLIB_MAX_SQE_ENTRY_SIZE, 0,
PAGE_SIZE, HWQ_TYPE_QUEUE);
if (rc)
goto exit;
sq->swq = kcalloc(sq->hwq.max_elements, sizeof(*sq->swq), GFP_KERNEL);
if (!sq->swq) {
rc = -ENOMEM;
goto fail_sq;
}
pbl = &sq->hwq.pbl[PBL_LVL_0];
req.sq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
req.sq_pg_size_sq_lvl =
((sq->hwq.level & CMDQ_CREATE_QP1_SQ_LVL_MASK)
<< CMDQ_CREATE_QP1_SQ_LVL_SFT) |
(pbl->pg_size == ROCE_PG_SIZE_4K ?
CMDQ_CREATE_QP1_SQ_PG_SIZE_PG_4K :
pbl->pg_size == ROCE_PG_SIZE_8K ?
CMDQ_CREATE_QP1_SQ_PG_SIZE_PG_8K :
pbl->pg_size == ROCE_PG_SIZE_64K ?
CMDQ_CREATE_QP1_SQ_PG_SIZE_PG_64K :
pbl->pg_size == ROCE_PG_SIZE_2M ?
CMDQ_CREATE_QP1_SQ_PG_SIZE_PG_2M :
pbl->pg_size == ROCE_PG_SIZE_8M ?
CMDQ_CREATE_QP1_SQ_PG_SIZE_PG_8M :
pbl->pg_size == ROCE_PG_SIZE_1G ?
CMDQ_CREATE_QP1_SQ_PG_SIZE_PG_1G :
CMDQ_CREATE_QP1_SQ_PG_SIZE_PG_4K);
if (qp->scq)
req.scq_cid = cpu_to_le32(qp->scq->id);
qp_flags |= CMDQ_CREATE_QP1_QP_FLAGS_RESERVED_LKEY_ENABLE;
/* RQ */
if (rq->max_wqe) {
rq->hwq.max_elements = qp->rq.max_wqe;
rc = bnxt_qplib_alloc_init_hwq(res->pdev, &rq->hwq, NULL, 0,
&rq->hwq.max_elements,
BNXT_QPLIB_MAX_RQE_ENTRY_SIZE, 0,
PAGE_SIZE, HWQ_TYPE_QUEUE);
if (rc)
goto fail_sq;
rq->swq = kcalloc(rq->hwq.max_elements, sizeof(*rq->swq),
GFP_KERNEL);
if (!rq->swq) {
rc = -ENOMEM;
goto fail_rq;
}
pbl = &rq->hwq.pbl[PBL_LVL_0];
req.rq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
req.rq_pg_size_rq_lvl =
((rq->hwq.level & CMDQ_CREATE_QP1_RQ_LVL_MASK) <<
CMDQ_CREATE_QP1_RQ_LVL_SFT) |
(pbl->pg_size == ROCE_PG_SIZE_4K ?
CMDQ_CREATE_QP1_RQ_PG_SIZE_PG_4K :
pbl->pg_size == ROCE_PG_SIZE_8K ?
CMDQ_CREATE_QP1_RQ_PG_SIZE_PG_8K :
pbl->pg_size == ROCE_PG_SIZE_64K ?
CMDQ_CREATE_QP1_RQ_PG_SIZE_PG_64K :
pbl->pg_size == ROCE_PG_SIZE_2M ?
CMDQ_CREATE_QP1_RQ_PG_SIZE_PG_2M :
pbl->pg_size == ROCE_PG_SIZE_8M ?
CMDQ_CREATE_QP1_RQ_PG_SIZE_PG_8M :
pbl->pg_size == ROCE_PG_SIZE_1G ?
CMDQ_CREATE_QP1_RQ_PG_SIZE_PG_1G :
CMDQ_CREATE_QP1_RQ_PG_SIZE_PG_4K);
if (qp->rcq)
req.rcq_cid = cpu_to_le32(qp->rcq->id);
}
/* Header buffer - allow hdr_buf pass in */
rc = bnxt_qplib_alloc_qp_hdr_buf(res, qp);
if (rc) {
rc = -ENOMEM;
goto fail;
}
req.qp_flags = cpu_to_le32(qp_flags);
req.sq_size = cpu_to_le32(sq->hwq.max_elements);
req.rq_size = cpu_to_le32(rq->hwq.max_elements);
req.sq_fwo_sq_sge =
cpu_to_le16((sq->max_sge & CMDQ_CREATE_QP1_SQ_SGE_MASK) <<
CMDQ_CREATE_QP1_SQ_SGE_SFT);
req.rq_fwo_rq_sge =
cpu_to_le16((rq->max_sge & CMDQ_CREATE_QP1_RQ_SGE_MASK) <<
CMDQ_CREATE_QP1_RQ_SGE_SFT);
req.pd_id = cpu_to_le32(qp->pd->id);
resp = (struct creq_create_qp1_resp *)
bnxt_qplib_rcfw_send_message(rcfw, (void *)&req,
NULL, 0);
if (!resp) {
dev_err(&res->pdev->dev, "QPLIB: FP: CREATE_QP1 send failed");
rc = -EINVAL;
goto fail;
}
if (!bnxt_qplib_rcfw_wait_for_resp(rcfw, le16_to_cpu(req.cookie))) {
/* Cmd timed out */
dev_err(&rcfw->pdev->dev, "QPLIB: FP: CREATE_QP1 timed out");
rc = -ETIMEDOUT;
goto fail;
}
if (resp->status ||
le16_to_cpu(resp->cookie) != le16_to_cpu(req.cookie)) {
dev_err(&rcfw->pdev->dev, "QPLIB: FP: CREATE_QP1 failed ");
dev_err(&rcfw->pdev->dev,
"QPLIB: with status 0x%x cmdq 0x%x resp 0x%x",
resp->status, le16_to_cpu(req.cookie),
le16_to_cpu(resp->cookie));
rc = -EINVAL;
goto fail;
}
qp->id = le32_to_cpu(resp->xid);
qp->cur_qp_state = CMDQ_MODIFY_QP_NEW_STATE_RESET;
sq->flush_in_progress = false;
rq->flush_in_progress = false;
return 0;
fail:
bnxt_qplib_free_qp_hdr_buf(res, qp);
fail_rq:
bnxt_qplib_free_hwq(res->pdev, &rq->hwq);
kfree(rq->swq);
fail_sq:
bnxt_qplib_free_hwq(res->pdev, &sq->hwq);
kfree(sq->swq);
exit:
return rc;
}
int bnxt_qplib_create_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
{
struct bnxt_qplib_rcfw *rcfw = res->rcfw;
struct sq_send *hw_sq_send_hdr, **hw_sq_send_ptr;
struct cmdq_create_qp req;
struct creq_create_qp_resp *resp;
struct bnxt_qplib_pbl *pbl;
struct sq_psn_search **psn_search_ptr;
unsigned long int psn_search, poff = 0;
struct bnxt_qplib_q *sq = &qp->sq;
struct bnxt_qplib_q *rq = &qp->rq;
struct bnxt_qplib_hwq *xrrq;
int i, rc, req_size, psn_sz;
u16 cmd_flags = 0, max_ssge;
u32 sw_prod, qp_flags = 0;
RCFW_CMD_PREP(req, CREATE_QP, cmd_flags);
/* General */
req.type = qp->type;
req.dpi = cpu_to_le32(qp->dpi->dpi);
req.qp_handle = cpu_to_le64(qp->qp_handle);
/* SQ */
psn_sz = (qp->type == CMDQ_CREATE_QP_TYPE_RC) ?
sizeof(struct sq_psn_search) : 0;
sq->hwq.max_elements = sq->max_wqe;
rc = bnxt_qplib_alloc_init_hwq(res->pdev, &sq->hwq, sq->sglist,
sq->nmap, &sq->hwq.max_elements,
BNXT_QPLIB_MAX_SQE_ENTRY_SIZE,
psn_sz,
PAGE_SIZE, HWQ_TYPE_QUEUE);
if (rc)
goto exit;
sq->swq = kcalloc(sq->hwq.max_elements, sizeof(*sq->swq), GFP_KERNEL);
if (!sq->swq) {
rc = -ENOMEM;
goto fail_sq;
}
hw_sq_send_ptr = (struct sq_send **)sq->hwq.pbl_ptr;
if (psn_sz) {
psn_search_ptr = (struct sq_psn_search **)
&hw_sq_send_ptr[get_sqe_pg
(sq->hwq.max_elements)];
psn_search = (unsigned long int)
&hw_sq_send_ptr[get_sqe_pg(sq->hwq.max_elements)]
[get_sqe_idx(sq->hwq.max_elements)];
if (psn_search & ~PAGE_MASK) {
/* If the psn_search does not start on a page boundary,
* then calculate the offset
*/
poff = (psn_search & ~PAGE_MASK) /
BNXT_QPLIB_MAX_PSNE_ENTRY_SIZE;
}
for (i = 0; i < sq->hwq.max_elements; i++)
sq->swq[i].psn_search =
&psn_search_ptr[get_psne_pg(i + poff)]
[get_psne_idx(i + poff)];
}
pbl = &sq->hwq.pbl[PBL_LVL_0];
req.sq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
req.sq_pg_size_sq_lvl =
((sq->hwq.level & CMDQ_CREATE_QP_SQ_LVL_MASK)
<< CMDQ_CREATE_QP_SQ_LVL_SFT) |
(pbl->pg_size == ROCE_PG_SIZE_4K ?
CMDQ_CREATE_QP_SQ_PG_SIZE_PG_4K :
pbl->pg_size == ROCE_PG_SIZE_8K ?
CMDQ_CREATE_QP_SQ_PG_SIZE_PG_8K :
pbl->pg_size == ROCE_PG_SIZE_64K ?
CMDQ_CREATE_QP_SQ_PG_SIZE_PG_64K :
pbl->pg_size == ROCE_PG_SIZE_2M ?
CMDQ_CREATE_QP_SQ_PG_SIZE_PG_2M :
pbl->pg_size == ROCE_PG_SIZE_8M ?
CMDQ_CREATE_QP_SQ_PG_SIZE_PG_8M :
pbl->pg_size == ROCE_PG_SIZE_1G ?
CMDQ_CREATE_QP_SQ_PG_SIZE_PG_1G :
CMDQ_CREATE_QP_SQ_PG_SIZE_PG_4K);
/* initialize all SQ WQEs to LOCAL_INVALID (sq prep for hw fetch) */
hw_sq_send_ptr = (struct sq_send **)sq->hwq.pbl_ptr;
for (sw_prod = 0; sw_prod < sq->hwq.max_elements; sw_prod++) {
hw_sq_send_hdr = &hw_sq_send_ptr[get_sqe_pg(sw_prod)]
[get_sqe_idx(sw_prod)];
hw_sq_send_hdr->wqe_type = SQ_BASE_WQE_TYPE_LOCAL_INVALID;
}
if (qp->scq)
req.scq_cid = cpu_to_le32(qp->scq->id);
qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_RESERVED_LKEY_ENABLE;
qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_FR_PMR_ENABLED;
if (qp->sig_type)
qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_FORCE_COMPLETION;
/* RQ */
if (rq->max_wqe) {
rq->hwq.max_elements = rq->max_wqe;
rc = bnxt_qplib_alloc_init_hwq(res->pdev, &rq->hwq, rq->sglist,
rq->nmap, &rq->hwq.max_elements,
BNXT_QPLIB_MAX_RQE_ENTRY_SIZE, 0,
PAGE_SIZE, HWQ_TYPE_QUEUE);
if (rc)
goto fail_sq;
rq->swq = kcalloc(rq->hwq.max_elements, sizeof(*rq->swq),
GFP_KERNEL);
if (!rq->swq) {
rc = -ENOMEM;
goto fail_rq;
}
pbl = &rq->hwq.pbl[PBL_LVL_0];
req.rq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
req.rq_pg_size_rq_lvl =
((rq->hwq.level & CMDQ_CREATE_QP_RQ_LVL_MASK) <<
CMDQ_CREATE_QP_RQ_LVL_SFT) |
(pbl->pg_size == ROCE_PG_SIZE_4K ?
CMDQ_CREATE_QP_RQ_PG_SIZE_PG_4K :
pbl->pg_size == ROCE_PG_SIZE_8K ?
CMDQ_CREATE_QP_RQ_PG_SIZE_PG_8K :
pbl->pg_size == ROCE_PG_SIZE_64K ?
CMDQ_CREATE_QP_RQ_PG_SIZE_PG_64K :
pbl->pg_size == ROCE_PG_SIZE_2M ?
CMDQ_CREATE_QP_RQ_PG_SIZE_PG_2M :
pbl->pg_size == ROCE_PG_SIZE_8M ?
CMDQ_CREATE_QP_RQ_PG_SIZE_PG_8M :
pbl->pg_size == ROCE_PG_SIZE_1G ?
CMDQ_CREATE_QP_RQ_PG_SIZE_PG_1G :
CMDQ_CREATE_QP_RQ_PG_SIZE_PG_4K);
}
if (qp->rcq)
req.rcq_cid = cpu_to_le32(qp->rcq->id);
req.qp_flags = cpu_to_le32(qp_flags);
req.sq_size = cpu_to_le32(sq->hwq.max_elements);
req.rq_size = cpu_to_le32(rq->hwq.max_elements);
qp->sq_hdr_buf = NULL;
qp->rq_hdr_buf = NULL;
rc = bnxt_qplib_alloc_qp_hdr_buf(res, qp);
if (rc)
goto fail_rq;
/* CTRL-22434: Irrespective of the requested SGE count on the SQ
* always create the QP with max send sges possible if the requested
* inline size is greater than 0.
*/
max_ssge = qp->max_inline_data ? 6 : sq->max_sge;
req.sq_fwo_sq_sge = cpu_to_le16(
((max_ssge & CMDQ_CREATE_QP_SQ_SGE_MASK)
<< CMDQ_CREATE_QP_SQ_SGE_SFT) | 0);
req.rq_fwo_rq_sge = cpu_to_le16(
((rq->max_sge & CMDQ_CREATE_QP_RQ_SGE_MASK)
<< CMDQ_CREATE_QP_RQ_SGE_SFT) | 0);
/* ORRQ and IRRQ */
if (psn_sz) {
xrrq = &qp->orrq;
xrrq->max_elements =
ORD_LIMIT_TO_ORRQ_SLOTS(qp->max_rd_atomic);
req_size = xrrq->max_elements *
BNXT_QPLIB_MAX_ORRQE_ENTRY_SIZE + PAGE_SIZE - 1;
req_size &= ~(PAGE_SIZE - 1);
rc = bnxt_qplib_alloc_init_hwq(res->pdev, xrrq, NULL, 0,
&xrrq->max_elements,
BNXT_QPLIB_MAX_ORRQE_ENTRY_SIZE,
0, req_size, HWQ_TYPE_CTX);
if (rc)
goto fail_buf_free;
pbl = &xrrq->pbl[PBL_LVL_0];
req.orrq_addr = cpu_to_le64(pbl->pg_map_arr[0]);
xrrq = &qp->irrq;
xrrq->max_elements = IRD_LIMIT_TO_IRRQ_SLOTS(
qp->max_dest_rd_atomic);
req_size = xrrq->max_elements *
BNXT_QPLIB_MAX_IRRQE_ENTRY_SIZE + PAGE_SIZE - 1;
req_size &= ~(PAGE_SIZE - 1);
rc = bnxt_qplib_alloc_init_hwq(res->pdev, xrrq, NULL, 0,
&xrrq->max_elements,
BNXT_QPLIB_MAX_IRRQE_ENTRY_SIZE,
0, req_size, HWQ_TYPE_CTX);
if (rc)
goto fail_orrq;
pbl = &xrrq->pbl[PBL_LVL_0];
req.irrq_addr = cpu_to_le64(pbl->pg_map_arr[0]);
}
req.pd_id = cpu_to_le32(qp->pd->id);
resp = (struct creq_create_qp_resp *)
bnxt_qplib_rcfw_send_message(rcfw, (void *)&req,
NULL, 0);
if (!resp) {
dev_err(&rcfw->pdev->dev, "QPLIB: FP: CREATE_QP send failed");
rc = -EINVAL;
goto fail;
}
if (!bnxt_qplib_rcfw_wait_for_resp(rcfw, le16_to_cpu(req.cookie))) {
/* Cmd timed out */
dev_err(&rcfw->pdev->dev, "QPLIB: FP: CREATE_QP timed out");
rc = -ETIMEDOUT;
goto fail;
}
if (resp->status ||
le16_to_cpu(resp->cookie) != le16_to_cpu(req.cookie)) {
dev_err(&rcfw->pdev->dev, "QPLIB: FP: CREATE_QP failed ");
dev_err(&rcfw->pdev->dev,
"QPLIB: with status 0x%x cmdq 0x%x resp 0x%x",
resp->status, le16_to_cpu(req.cookie),
le16_to_cpu(resp->cookie));
rc = -EINVAL;
goto fail;
}
qp->id = le32_to_cpu(resp->xid);
qp->cur_qp_state = CMDQ_MODIFY_QP_NEW_STATE_RESET;
sq->flush_in_progress = false;
rq->flush_in_progress = false;
return 0;
fail:
if (qp->irrq.max_elements)
bnxt_qplib_free_hwq(res->pdev, &qp->irrq);
fail_orrq:
if (qp->orrq.max_elements)
bnxt_qplib_free_hwq(res->pdev, &qp->orrq);
fail_buf_free:
bnxt_qplib_free_qp_hdr_buf(res, qp);
fail_rq:
bnxt_qplib_free_hwq(res->pdev, &rq->hwq);
kfree(rq->swq);
fail_sq:
bnxt_qplib_free_hwq(res->pdev, &sq->hwq);
kfree(sq->swq);
exit:
return rc;
}
static void __modify_flags_from_init_state(struct bnxt_qplib_qp *qp)
{
switch (qp->state) {
case CMDQ_MODIFY_QP_NEW_STATE_RTR:
/* INIT->RTR, configure the path_mtu to the default
* 2048 if not being requested
*/
if (!(qp->modify_flags &
CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU)) {
qp->modify_flags |=
CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU;
qp->path_mtu =
CMDQ_MODIFY_QP_PATH_MTU_MTU_2048;
}
qp->modify_flags &=
~CMDQ_MODIFY_QP_MODIFY_MASK_VLAN_ID;
/* Bono FW require the max_dest_rd_atomic to be >= 1 */
if (qp->max_dest_rd_atomic < 1)
qp->max_dest_rd_atomic = 1;
qp->modify_flags &= ~CMDQ_MODIFY_QP_MODIFY_MASK_SRC_MAC;
/* Bono FW 20.6.5 requires SGID_INDEX configuration */
if (!(qp->modify_flags &
CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX)) {
qp->modify_flags |=
CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX;
qp->ah.sgid_index = 0;
}
break;
default:
break;
}
}
static void __modify_flags_from_rtr_state(struct bnxt_qplib_qp *qp)
{
switch (qp->state) {
case CMDQ_MODIFY_QP_NEW_STATE_RTS:
/* Bono FW requires the max_rd_atomic to be >= 1 */
if (qp->max_rd_atomic < 1)
qp->max_rd_atomic = 1;
/* Bono FW does not allow PKEY_INDEX,
* DGID, FLOW_LABEL, SGID_INDEX, HOP_LIMIT,
* TRAFFIC_CLASS, DEST_MAC, PATH_MTU, RQ_PSN,
* MIN_RNR_TIMER, MAX_DEST_RD_ATOMIC, DEST_QP_ID
* modification
*/
qp->modify_flags &=
~(CMDQ_MODIFY_QP_MODIFY_MASK_PKEY |
CMDQ_MODIFY_QP_MODIFY_MASK_DGID |
CMDQ_MODIFY_QP_MODIFY_MASK_FLOW_LABEL |
CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX |
CMDQ_MODIFY_QP_MODIFY_MASK_HOP_LIMIT |
CMDQ_MODIFY_QP_MODIFY_MASK_TRAFFIC_CLASS |
CMDQ_MODIFY_QP_MODIFY_MASK_DEST_MAC |
CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU |
CMDQ_MODIFY_QP_MODIFY_MASK_RQ_PSN |
CMDQ_MODIFY_QP_MODIFY_MASK_MIN_RNR_TIMER |
CMDQ_MODIFY_QP_MODIFY_MASK_MAX_DEST_RD_ATOMIC |
CMDQ_MODIFY_QP_MODIFY_MASK_DEST_QP_ID);
break;
default:
break;
}
}
static void __filter_modify_flags(struct bnxt_qplib_qp *qp)
{
switch (qp->cur_qp_state) {
case CMDQ_MODIFY_QP_NEW_STATE_RESET:
break;
case CMDQ_MODIFY_QP_NEW_STATE_INIT:
__modify_flags_from_init_state(qp);
break;
case CMDQ_MODIFY_QP_NEW_STATE_RTR:
__modify_flags_from_rtr_state(qp);
break;
case CMDQ_MODIFY_QP_NEW_STATE_RTS:
break;
case CMDQ_MODIFY_QP_NEW_STATE_SQD:
break;
case CMDQ_MODIFY_QP_NEW_STATE_SQE:
break;
case CMDQ_MODIFY_QP_NEW_STATE_ERR:
break;
default:
break;
}
}
int bnxt_qplib_modify_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
{
struct bnxt_qplib_rcfw *rcfw = res->rcfw;
struct cmdq_modify_qp req;
struct creq_modify_qp_resp *resp;
u16 cmd_flags = 0, pkey;
u32 temp32[4];
u32 bmask;
RCFW_CMD_PREP(req, MODIFY_QP, cmd_flags);
/* Filter out the qp_attr_mask based on the state->new transition */
__filter_modify_flags(qp);
bmask = qp->modify_flags;
req.modify_mask = cpu_to_le32(qp->modify_flags);
req.qp_cid = cpu_to_le32(qp->id);
if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_STATE) {
req.network_type_en_sqd_async_notify_new_state =
(qp->state & CMDQ_MODIFY_QP_NEW_STATE_MASK) |
(qp->en_sqd_async_notify ?
CMDQ_MODIFY_QP_EN_SQD_ASYNC_NOTIFY : 0);
}
req.network_type_en_sqd_async_notify_new_state |= qp->nw_type;
if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_ACCESS)
req.access = qp->access;
if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_PKEY) {
if (!bnxt_qplib_get_pkey(res, &res->pkey_tbl,
qp->pkey_index, &pkey))
req.pkey = cpu_to_le16(pkey);
}
if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_QKEY)
req.qkey = cpu_to_le32(qp->qkey);
if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_DGID) {
memcpy(temp32, qp->ah.dgid.data, sizeof(struct bnxt_qplib_gid));
req.dgid[0] = cpu_to_le32(temp32[0]);
req.dgid[1] = cpu_to_le32(temp32[1]);
req.dgid[2] = cpu_to_le32(temp32[2]);
req.dgid[3] = cpu_to_le32(temp32[3]);
}
if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_FLOW_LABEL)
req.flow_label = cpu_to_le32(qp->ah.flow_label);
if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX)
req.sgid_index = cpu_to_le16(res->sgid_tbl.hw_id
[qp->ah.sgid_index]);
if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_HOP_LIMIT)
req.hop_limit = qp->ah.hop_limit;
if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_TRAFFIC_CLASS)
req.traffic_class = qp->ah.traffic_class;
if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_DEST_MAC)
memcpy(req.dest_mac, qp->ah.dmac, 6);
if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU)
req.path_mtu = qp->path_mtu;
if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_TIMEOUT)
req.timeout = qp->timeout;
if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_RETRY_CNT)
req.retry_cnt = qp->retry_cnt;
if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_RNR_RETRY)
req.rnr_retry = qp->rnr_retry;
if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_MIN_RNR_TIMER)
req.min_rnr_timer = qp->min_rnr_timer;
if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_RQ_PSN)
req.rq_psn = cpu_to_le32(qp->rq.psn);
if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_SQ_PSN)
req.sq_psn = cpu_to_le32(qp->sq.psn);
if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_MAX_RD_ATOMIC)
req.max_rd_atomic =
ORD_LIMIT_TO_ORRQ_SLOTS(qp->max_rd_atomic);
if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_MAX_DEST_RD_ATOMIC)
req.max_dest_rd_atomic =
IRD_LIMIT_TO_IRRQ_SLOTS(qp->max_dest_rd_atomic);
req.sq_size = cpu_to_le32(qp->sq.hwq.max_elements);
req.rq_size = cpu_to_le32(qp->rq.hwq.max_elements);
req.sq_sge = cpu_to_le16(qp->sq.max_sge);
req.rq_sge = cpu_to_le16(qp->rq.max_sge);
req.max_inline_data = cpu_to_le32(qp->max_inline_data);
if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_DEST_QP_ID)
req.dest_qp_id = cpu_to_le32(qp->dest_qpn);
req.vlan_pcp_vlan_dei_vlan_id = cpu_to_le16(qp->vlan_id);
resp = (struct creq_modify_qp_resp *)
bnxt_qplib_rcfw_send_message(rcfw, (void *)&req,
NULL, 0);
if (!resp) {
dev_err(&rcfw->pdev->dev, "QPLIB: FP: MODIFY_QP send failed");
return -EINVAL;
}
if (!bnxt_qplib_rcfw_wait_for_resp(rcfw, le16_to_cpu(req.cookie))) {
/* Cmd timed out */
dev_err(&rcfw->pdev->dev, "QPLIB: FP: MODIFY_QP timed out");
return -ETIMEDOUT;
}
if (resp->status ||
le16_to_cpu(resp->cookie) != le16_to_cpu(req.cookie)) {
dev_err(&rcfw->pdev->dev, "QPLIB: FP: MODIFY_QP failed ");
dev_err(&rcfw->pdev->dev,
"QPLIB: with status 0x%x cmdq 0x%x resp 0x%x",
resp->status, le16_to_cpu(req.cookie),
le16_to_cpu(resp->cookie));
return -EINVAL;
}
qp->cur_qp_state = qp->state;
return 0;
}
int bnxt_qplib_query_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
{
struct bnxt_qplib_rcfw *rcfw = res->rcfw;
struct cmdq_query_qp req;
struct creq_query_qp_resp *resp;
struct creq_query_qp_resp_sb *sb;
u16 cmd_flags = 0;
u32 temp32[4];
int i;
RCFW_CMD_PREP(req, QUERY_QP, cmd_flags);
req.qp_cid = cpu_to_le32(qp->id);
req.resp_size = sizeof(*sb) / BNXT_QPLIB_CMDQE_UNITS;
resp = (struct creq_query_qp_resp *)
bnxt_qplib_rcfw_send_message(rcfw, (void *)&req,
(void **)&sb, 0);
if (!resp) {
dev_err(&rcfw->pdev->dev, "QPLIB: FP: QUERY_QP send failed");
return -EINVAL;
}
if (!bnxt_qplib_rcfw_wait_for_resp(rcfw, le16_to_cpu(req.cookie))) {
/* Cmd timed out */
dev_err(&rcfw->pdev->dev, "QPLIB: FP: QUERY_QP timed out");
return -ETIMEDOUT;
}
if (resp->status ||
le16_to_cpu(resp->cookie) != le16_to_cpu(req.cookie)) {
dev_err(&rcfw->pdev->dev, "QPLIB: FP: QUERY_QP failed ");
dev_err(&rcfw->pdev->dev,
"QPLIB: with status 0x%x cmdq 0x%x resp 0x%x",
resp->status, le16_to_cpu(req.cookie),
le16_to_cpu(resp->cookie));
return -EINVAL;
}
/* Extract the context from the side buffer */
qp->state = sb->en_sqd_async_notify_state &
CREQ_QUERY_QP_RESP_SB_STATE_MASK;
qp->en_sqd_async_notify = sb->en_sqd_async_notify_state &
CREQ_QUERY_QP_RESP_SB_EN_SQD_ASYNC_NOTIFY ?
true : false;
qp->access = sb->access;
qp->pkey_index = le16_to_cpu(sb->pkey);
qp->qkey = le32_to_cpu(sb->qkey);
temp32[0] = le32_to_cpu(sb->dgid[0]);
temp32[1] = le32_to_cpu(sb->dgid[1]);
temp32[2] = le32_to_cpu(sb->dgid[2]);
temp32[3] = le32_to_cpu(sb->dgid[3]);
memcpy(qp->ah.dgid.data, temp32, sizeof(qp->ah.dgid.data));
qp->ah.flow_label = le32_to_cpu(sb->flow_label);
qp->ah.sgid_index = 0;
for (i = 0; i < res->sgid_tbl.max; i++) {
if (res->sgid_tbl.hw_id[i] == le16_to_cpu(sb->sgid_index)) {
qp->ah.sgid_index = i;
break;
}
}
if (i == res->sgid_tbl.max)
dev_warn(&res->pdev->dev, "QPLIB: SGID not found??");
qp->ah.hop_limit = sb->hop_limit;
qp->ah.traffic_class = sb->traffic_class;
memcpy(qp->ah.dmac, sb->dest_mac, 6);
qp->ah.vlan_id = (le16_to_cpu(sb->path_mtu_dest_vlan_id) &
CREQ_QUERY_QP_RESP_SB_VLAN_ID_MASK) >>
CREQ_QUERY_QP_RESP_SB_VLAN_ID_SFT;
qp->path_mtu = (le16_to_cpu(sb->path_mtu_dest_vlan_id) &
CREQ_QUERY_QP_RESP_SB_PATH_MTU_MASK) >>
CREQ_QUERY_QP_RESP_SB_PATH_MTU_SFT;
qp->timeout = sb->timeout;
qp->retry_cnt = sb->retry_cnt;
qp->rnr_retry = sb->rnr_retry;
qp->min_rnr_timer = sb->min_rnr_timer;
qp->rq.psn = le32_to_cpu(sb->rq_psn);
qp->max_rd_atomic = ORRQ_SLOTS_TO_ORD_LIMIT(sb->max_rd_atomic);
qp->sq.psn = le32_to_cpu(sb->sq_psn);
qp->max_dest_rd_atomic =
IRRQ_SLOTS_TO_IRD_LIMIT(sb->max_dest_rd_atomic);
qp->sq.max_wqe = qp->sq.hwq.max_elements;
qp->rq.max_wqe = qp->rq.hwq.max_elements;
qp->sq.max_sge = le16_to_cpu(sb->sq_sge);
qp->rq.max_sge = le16_to_cpu(sb->rq_sge);
qp->max_inline_data = le32_to_cpu(sb->max_inline_data);
qp->dest_qpn = le32_to_cpu(sb->dest_qp_id);
memcpy(qp->smac, sb->src_mac, 6);
qp->vlan_id = le16_to_cpu(sb->vlan_pcp_vlan_dei_vlan_id);
return 0;
}
static void __clean_cq(struct bnxt_qplib_cq *cq, u64 qp)
{
struct bnxt_qplib_hwq *cq_hwq = &cq->hwq;
struct cq_base *hw_cqe, **hw_cqe_ptr;
int i;
for (i = 0; i < cq_hwq->max_elements; i++) {
hw_cqe_ptr = (struct cq_base **)cq_hwq->pbl_ptr;
hw_cqe = &hw_cqe_ptr[CQE_PG(i)][CQE_IDX(i)];
if (!CQE_CMP_VALID(hw_cqe, i, cq_hwq->max_elements))
continue;
switch (hw_cqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK) {
case CQ_BASE_CQE_TYPE_REQ:
case CQ_BASE_CQE_TYPE_TERMINAL:
{
struct cq_req *cqe = (struct cq_req *)hw_cqe;
if (qp == le64_to_cpu(cqe->qp_handle))
cqe->qp_handle = 0;
break;
}
case CQ_BASE_CQE_TYPE_RES_RC:
case CQ_BASE_CQE_TYPE_RES_UD:
case CQ_BASE_CQE_TYPE_RES_RAWETH_QP1:
{
struct cq_res_rc *cqe = (struct cq_res_rc *)hw_cqe;
if (qp == le64_to_cpu(cqe->qp_handle))
cqe->qp_handle = 0;
break;
}
default:
break;
}
}
}
int bnxt_qplib_destroy_qp(struct bnxt_qplib_res *res,
struct bnxt_qplib_qp *qp)
{
struct bnxt_qplib_rcfw *rcfw = res->rcfw;
struct cmdq_destroy_qp req;
struct creq_destroy_qp_resp *resp;
unsigned long flags;
u16 cmd_flags = 0;
RCFW_CMD_PREP(req, DESTROY_QP, cmd_flags);
req.qp_cid = cpu_to_le32(qp->id);
resp = (struct creq_destroy_qp_resp *)
bnxt_qplib_rcfw_send_message(rcfw, (void *)&req,
NULL, 0);
if (!resp) {
dev_err(&rcfw->pdev->dev, "QPLIB: FP: DESTROY_QP send failed");
return -EINVAL;
}
if (!bnxt_qplib_rcfw_wait_for_resp(rcfw, le16_to_cpu(req.cookie))) {
/* Cmd timed out */
dev_err(&rcfw->pdev->dev, "QPLIB: FP: DESTROY_QP timed out");
return -ETIMEDOUT;
}
if (resp->status ||
le16_to_cpu(resp->cookie) != le16_to_cpu(req.cookie)) {
dev_err(&rcfw->pdev->dev, "QPLIB: FP: DESTROY_QP failed ");
dev_err(&rcfw->pdev->dev,
"QPLIB: with status 0x%x cmdq 0x%x resp 0x%x",
resp->status, le16_to_cpu(req.cookie),
le16_to_cpu(resp->cookie));
return -EINVAL;
}
/* Must walk the associated CQs to nullified the QP ptr */
spin_lock_irqsave(&qp->scq->hwq.lock, flags);
__clean_cq(qp->scq, (u64)(unsigned long)qp);
if (qp->rcq && qp->rcq != qp->scq) {
spin_lock(&qp->rcq->hwq.lock);
__clean_cq(qp->rcq, (u64)(unsigned long)qp);
spin_unlock(&qp->rcq->hwq.lock);
}
spin_unlock_irqrestore(&qp->scq->hwq.lock, flags);
bnxt_qplib_free_qp_hdr_buf(res, qp);
bnxt_qplib_free_hwq(res->pdev, &qp->sq.hwq);
kfree(qp->sq.swq);
bnxt_qplib_free_hwq(res->pdev, &qp->rq.hwq);
kfree(qp->rq.swq);
if (qp->irrq.max_elements)
bnxt_qplib_free_hwq(res->pdev, &qp->irrq);
if (qp->orrq.max_elements)
bnxt_qplib_free_hwq(res->pdev, &qp->orrq);
return 0;
}
void *bnxt_qplib_get_qp1_sq_buf(struct bnxt_qplib_qp *qp,
struct bnxt_qplib_sge *sge)
{
struct bnxt_qplib_q *sq = &qp->sq;
u32 sw_prod;
memset(sge, 0, sizeof(*sge));
if (qp->sq_hdr_buf) {
sw_prod = HWQ_CMP(sq->hwq.prod, &sq->hwq);
sge->addr = (dma_addr_t)(qp->sq_hdr_buf_map +
sw_prod * qp->sq_hdr_buf_size);
sge->lkey = 0xFFFFFFFF;
sge->size = qp->sq_hdr_buf_size;
return qp->sq_hdr_buf + sw_prod * sge->size;
}
return NULL;
}
u32 bnxt_qplib_get_rq_prod_index(struct bnxt_qplib_qp *qp)
{
struct bnxt_qplib_q *rq = &qp->rq;
return HWQ_CMP(rq->hwq.prod, &rq->hwq);
}
dma_addr_t bnxt_qplib_get_qp_buf_from_index(struct bnxt_qplib_qp *qp, u32 index)
{
return (qp->rq_hdr_buf_map + index * qp->rq_hdr_buf_size);
}
void *bnxt_qplib_get_qp1_rq_buf(struct bnxt_qplib_qp *qp,
struct bnxt_qplib_sge *sge)
{
struct bnxt_qplib_q *rq = &qp->rq;
u32 sw_prod;
memset(sge, 0, sizeof(*sge));
if (qp->rq_hdr_buf) {
sw_prod = HWQ_CMP(rq->hwq.prod, &rq->hwq);
sge->addr = (dma_addr_t)(qp->rq_hdr_buf_map +
sw_prod * qp->rq_hdr_buf_size);
sge->lkey = 0xFFFFFFFF;
sge->size = qp->rq_hdr_buf_size;
return qp->rq_hdr_buf + sw_prod * sge->size;
}
return NULL;
}
void bnxt_qplib_post_send_db(struct bnxt_qplib_qp *qp)
{
struct bnxt_qplib_q *sq = &qp->sq;
struct dbr_dbr db_msg = { 0 };
u32 sw_prod;
sw_prod = HWQ_CMP(sq->hwq.prod, &sq->hwq);
db_msg.index = cpu_to_le32((sw_prod << DBR_DBR_INDEX_SFT) &
DBR_DBR_INDEX_MASK);
db_msg.type_xid =
cpu_to_le32(((qp->id << DBR_DBR_XID_SFT) & DBR_DBR_XID_MASK) |
DBR_DBR_TYPE_SQ);
/* Flush all the WQE writes to HW */
wmb();
__iowrite64_copy(qp->dpi->dbr, &db_msg, sizeof(db_msg) / sizeof(u64));
}
int bnxt_qplib_post_send(struct bnxt_qplib_qp *qp,
struct bnxt_qplib_swqe *wqe)
{
struct bnxt_qplib_q *sq = &qp->sq;
struct bnxt_qplib_swq *swq;
struct sq_send *hw_sq_send_hdr, **hw_sq_send_ptr;
struct sq_sge *hw_sge;
u32 sw_prod;
u8 wqe_size16;
int i, rc = 0, data_len = 0, pkt_num = 0;
__le32 temp32;
if (qp->state != CMDQ_MODIFY_QP_NEW_STATE_RTS) {
rc = -EINVAL;
goto done;
}
if (HWQ_CMP((sq->hwq.prod + 1), &sq->hwq) ==
HWQ_CMP(sq->hwq.cons, &sq->hwq)) {
rc = -ENOMEM;
goto done;
}
sw_prod = HWQ_CMP(sq->hwq.prod, &sq->hwq);
swq = &sq->swq[sw_prod];
swq->wr_id = wqe->wr_id;
swq->type = wqe->type;
swq->flags = wqe->flags;
if (qp->sig_type)
swq->flags |= SQ_SEND_FLAGS_SIGNAL_COMP;
swq->start_psn = sq->psn & BTH_PSN_MASK;
hw_sq_send_ptr = (struct sq_send **)sq->hwq.pbl_ptr;
hw_sq_send_hdr = &hw_sq_send_ptr[get_sqe_pg(sw_prod)]
[get_sqe_idx(sw_prod)];
memset(hw_sq_send_hdr, 0, BNXT_QPLIB_MAX_SQE_ENTRY_SIZE);
if (wqe->flags & BNXT_QPLIB_SWQE_FLAGS_INLINE) {
/* Copy the inline data */
if (wqe->inline_len > BNXT_QPLIB_SWQE_MAX_INLINE_LENGTH) {
dev_warn(&sq->hwq.pdev->dev,
"QPLIB: Inline data length > 96 detected");
data_len = BNXT_QPLIB_SWQE_MAX_INLINE_LENGTH;
} else {
data_len = wqe->inline_len;
}
memcpy(hw_sq_send_hdr->data, wqe->inline_data, data_len);
wqe_size16 = (data_len + 15) >> 4;
} else {
for (i = 0, hw_sge = (struct sq_sge *)hw_sq_send_hdr->data;
i < wqe->num_sge; i++, hw_sge++) {
hw_sge->va_or_pa = cpu_to_le64(wqe->sg_list[i].addr);
hw_sge->l_key = cpu_to_le32(wqe->sg_list[i].lkey);
hw_sge->size = cpu_to_le32(wqe->sg_list[i].size);
data_len += wqe->sg_list[i].size;
}
/* Each SGE entry = 1 WQE size16 */
wqe_size16 = wqe->num_sge;
}
/* Specifics */
switch (wqe->type) {
case BNXT_QPLIB_SWQE_TYPE_SEND:
if (qp->type == CMDQ_CREATE_QP1_TYPE_GSI) {
/* Assemble info for Raw Ethertype QPs */
struct sq_send_raweth_qp1 *sqe =
(struct sq_send_raweth_qp1 *)hw_sq_send_hdr;
sqe->wqe_type = wqe->type;
sqe->flags = wqe->flags;
sqe->wqe_size = wqe_size16 +
((offsetof(typeof(*sqe), data) + 15) >> 4);
sqe->cfa_action = cpu_to_le16(wqe->rawqp1.cfa_action);
sqe->lflags = cpu_to_le16(wqe->rawqp1.lflags);
sqe->length = cpu_to_le32(data_len);
sqe->cfa_meta = cpu_to_le32((wqe->rawqp1.cfa_meta &
SQ_SEND_RAWETH_QP1_CFA_META_VLAN_VID_MASK) <<
SQ_SEND_RAWETH_QP1_CFA_META_VLAN_VID_SFT);
break;
}
/* else, just fall thru */
case BNXT_QPLIB_SWQE_TYPE_SEND_WITH_IMM:
case BNXT_QPLIB_SWQE_TYPE_SEND_WITH_INV:
{
struct sq_send *sqe = (struct sq_send *)hw_sq_send_hdr;
sqe->wqe_type = wqe->type;
sqe->flags = wqe->flags;
sqe->wqe_size = wqe_size16 +
((offsetof(typeof(*sqe), data) + 15) >> 4);
sqe->inv_key_or_imm_data = cpu_to_le32(
wqe->send.inv_key);
if (qp->type == CMDQ_CREATE_QP_TYPE_UD) {
sqe->q_key = cpu_to_le32(wqe->send.q_key);
sqe->dst_qp = cpu_to_le32(
wqe->send.dst_qp & SQ_SEND_DST_QP_MASK);
sqe->length = cpu_to_le32(data_len);
sqe->avid = cpu_to_le32(wqe->send.avid &
SQ_SEND_AVID_MASK);
sq->psn = (sq->psn + 1) & BTH_PSN_MASK;
} else {
sqe->length = cpu_to_le32(data_len);
sqe->dst_qp = 0;
sqe->avid = 0;
if (qp->mtu)
pkt_num = (data_len + qp->mtu - 1) / qp->mtu;
if (!pkt_num)
pkt_num = 1;
sq->psn = (sq->psn + pkt_num) & BTH_PSN_MASK;
}
break;
}
case BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE:
case BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE_WITH_IMM:
case BNXT_QPLIB_SWQE_TYPE_RDMA_READ:
{
struct sq_rdma *sqe = (struct sq_rdma *)hw_sq_send_hdr;
sqe->wqe_type = wqe->type;
sqe->flags = wqe->flags;
sqe->wqe_size = wqe_size16 +
((offsetof(typeof(*sqe), data) + 15) >> 4);
sqe->imm_data = cpu_to_le32(wqe->rdma.inv_key);
sqe->length = cpu_to_le32((u32)data_len);
sqe->remote_va = cpu_to_le64(wqe->rdma.remote_va);
sqe->remote_key = cpu_to_le32(wqe->rdma.r_key);
if (qp->mtu)
pkt_num = (data_len + qp->mtu - 1) / qp->mtu;
if (!pkt_num)
pkt_num = 1;
sq->psn = (sq->psn + pkt_num) & BTH_PSN_MASK;
break;
}
case BNXT_QPLIB_SWQE_TYPE_ATOMIC_CMP_AND_SWP:
case BNXT_QPLIB_SWQE_TYPE_ATOMIC_FETCH_AND_ADD:
{
struct sq_atomic *sqe = (struct sq_atomic *)hw_sq_send_hdr;
sqe->wqe_type = wqe->type;
sqe->flags = wqe->flags;
sqe->remote_key = cpu_to_le32(wqe->atomic.r_key);
sqe->remote_va = cpu_to_le64(wqe->atomic.remote_va);
sqe->swap_data = cpu_to_le64(wqe->atomic.swap_data);
sqe->cmp_data = cpu_to_le64(wqe->atomic.cmp_data);
if (qp->mtu)
pkt_num = (data_len + qp->mtu - 1) / qp->mtu;
if (!pkt_num)
pkt_num = 1;
sq->psn = (sq->psn + pkt_num) & BTH_PSN_MASK;
break;
}
case BNXT_QPLIB_SWQE_TYPE_LOCAL_INV:
{
struct sq_localinvalidate *sqe =
(struct sq_localinvalidate *)hw_sq_send_hdr;
sqe->wqe_type = wqe->type;
sqe->flags = wqe->flags;
sqe->inv_l_key = cpu_to_le32(wqe->local_inv.inv_l_key);
break;
}
case BNXT_QPLIB_SWQE_TYPE_FAST_REG_MR:
{
struct sq_fr_pmr *sqe = (struct sq_fr_pmr *)hw_sq_send_hdr;
sqe->wqe_type = wqe->type;
sqe->flags = wqe->flags;
sqe->access_cntl = wqe->frmr.access_cntl |
SQ_FR_PMR_ACCESS_CNTL_LOCAL_WRITE;
sqe->zero_based_page_size_log =
(wqe->frmr.pg_sz_log & SQ_FR_PMR_PAGE_SIZE_LOG_MASK) <<
SQ_FR_PMR_PAGE_SIZE_LOG_SFT |
(wqe->frmr.zero_based ? SQ_FR_PMR_ZERO_BASED : 0);
sqe->l_key = cpu_to_le32(wqe->frmr.l_key);
temp32 = cpu_to_le32(wqe->frmr.length);
memcpy(sqe->length, &temp32, sizeof(wqe->frmr.length));
sqe->numlevels_pbl_page_size_log =
((wqe->frmr.pbl_pg_sz_log <<
SQ_FR_PMR_PBL_PAGE_SIZE_LOG_SFT) &
SQ_FR_PMR_PBL_PAGE_SIZE_LOG_MASK) |
((wqe->frmr.levels << SQ_FR_PMR_NUMLEVELS_SFT) &
SQ_FR_PMR_NUMLEVELS_MASK);
for (i = 0; i < wqe->frmr.page_list_len; i++)
wqe->frmr.pbl_ptr[i] = cpu_to_le64(
wqe->frmr.page_list[i] |
PTU_PTE_VALID);
sqe->pblptr = cpu_to_le64(wqe->frmr.pbl_dma_ptr);
sqe->va = cpu_to_le64(wqe->frmr.va);
break;
}
case BNXT_QPLIB_SWQE_TYPE_BIND_MW:
{
struct sq_bind *sqe = (struct sq_bind *)hw_sq_send_hdr;
sqe->wqe_type = wqe->type;
sqe->flags = wqe->flags;
sqe->access_cntl = wqe->bind.access_cntl;
sqe->mw_type_zero_based = wqe->bind.mw_type |
(wqe->bind.zero_based ? SQ_BIND_ZERO_BASED : 0);
sqe->parent_l_key = cpu_to_le32(wqe->bind.parent_l_key);
sqe->l_key = cpu_to_le32(wqe->bind.r_key);
sqe->va = cpu_to_le64(wqe->bind.va);
temp32 = cpu_to_le32(wqe->bind.length);
memcpy(&sqe->length, &temp32, sizeof(wqe->bind.length));
break;
}
default:
/* Bad wqe, return error */
rc = -EINVAL;
goto done;
}
swq->next_psn = sq->psn & BTH_PSN_MASK;
if (swq->psn_search) {
swq->psn_search->opcode_start_psn = cpu_to_le32(
((swq->start_psn << SQ_PSN_SEARCH_START_PSN_SFT) &
SQ_PSN_SEARCH_START_PSN_MASK) |
((wqe->type << SQ_PSN_SEARCH_OPCODE_SFT) &
SQ_PSN_SEARCH_OPCODE_MASK));
swq->psn_search->flags_next_psn = cpu_to_le32(
((swq->next_psn << SQ_PSN_SEARCH_NEXT_PSN_SFT) &
SQ_PSN_SEARCH_NEXT_PSN_MASK));
}
sq->hwq.prod++;
done:
return rc;
}
void bnxt_qplib_post_recv_db(struct bnxt_qplib_qp *qp)
{
struct bnxt_qplib_q *rq = &qp->rq;
struct dbr_dbr db_msg = { 0 };
u32 sw_prod;
sw_prod = HWQ_CMP(rq->hwq.prod, &rq->hwq);
db_msg.index = cpu_to_le32((sw_prod << DBR_DBR_INDEX_SFT) &
DBR_DBR_INDEX_MASK);
db_msg.type_xid =
cpu_to_le32(((qp->id << DBR_DBR_XID_SFT) & DBR_DBR_XID_MASK) |
DBR_DBR_TYPE_RQ);
/* Flush the writes to HW Rx WQE before the ringing Rx DB */
wmb();
__iowrite64_copy(qp->dpi->dbr, &db_msg, sizeof(db_msg) / sizeof(u64));
}
int bnxt_qplib_post_recv(struct bnxt_qplib_qp *qp,
struct bnxt_qplib_swqe *wqe)
{
struct bnxt_qplib_q *rq = &qp->rq;
struct rq_wqe *rqe, **rqe_ptr;
struct sq_sge *hw_sge;
u32 sw_prod;
int i, rc = 0;
if (qp->state == CMDQ_MODIFY_QP_NEW_STATE_ERR) {
dev_err(&rq->hwq.pdev->dev,
"QPLIB: FP: QP (0x%x) is in the 0x%x state",
qp->id, qp->state);
rc = -EINVAL;
goto done;
}
if (HWQ_CMP((rq->hwq.prod + 1), &rq->hwq) ==
HWQ_CMP(rq->hwq.cons, &rq->hwq)) {
dev_err(&rq->hwq.pdev->dev,
"QPLIB: FP: QP (0x%x) RQ is full!", qp->id);
rc = -EINVAL;
goto done;
}
sw_prod = HWQ_CMP(rq->hwq.prod, &rq->hwq);
rq->swq[sw_prod].wr_id = wqe->wr_id;
rqe_ptr = (struct rq_wqe **)rq->hwq.pbl_ptr;
rqe = &rqe_ptr[RQE_PG(sw_prod)][RQE_IDX(sw_prod)];
memset(rqe, 0, BNXT_QPLIB_MAX_RQE_ENTRY_SIZE);
/* Calculate wqe_size16 and data_len */
for (i = 0, hw_sge = (struct sq_sge *)rqe->data;
i < wqe->num_sge; i++, hw_sge++) {
hw_sge->va_or_pa = cpu_to_le64(wqe->sg_list[i].addr);
hw_sge->l_key = cpu_to_le32(wqe->sg_list[i].lkey);
hw_sge->size = cpu_to_le32(wqe->sg_list[i].size);
}
rqe->wqe_type = wqe->type;
rqe->flags = wqe->flags;
rqe->wqe_size = wqe->num_sge +
((offsetof(typeof(*rqe), data) + 15) >> 4);
/* Supply the rqe->wr_id index to the wr_id_tbl for now */
rqe->wr_id[0] = cpu_to_le32(sw_prod);
rq->hwq.prod++;
done:
return rc;
}
/* CQ */
/* Spinlock must be held */
static void bnxt_qplib_arm_cq_enable(struct bnxt_qplib_cq *cq)
{
struct dbr_dbr db_msg = { 0 };
db_msg.type_xid =
cpu_to_le32(((cq->id << DBR_DBR_XID_SFT) & DBR_DBR_XID_MASK) |
DBR_DBR_TYPE_CQ_ARMENA);
/* Flush memory writes before enabling the CQ */
wmb();
__iowrite64_copy(cq->dbr_base, &db_msg, sizeof(db_msg) / sizeof(u64));
}
static void bnxt_qplib_arm_cq(struct bnxt_qplib_cq *cq, u32 arm_type)
{
struct bnxt_qplib_hwq *cq_hwq = &cq->hwq;
struct dbr_dbr db_msg = { 0 };
u32 sw_cons;
/* Ring DB */
sw_cons = HWQ_CMP(cq_hwq->cons, cq_hwq);
db_msg.index = cpu_to_le32((sw_cons << DBR_DBR_INDEX_SFT) &
DBR_DBR_INDEX_MASK);
db_msg.type_xid =
cpu_to_le32(((cq->id << DBR_DBR_XID_SFT) & DBR_DBR_XID_MASK) |
arm_type);
/* flush memory writes before arming the CQ */
wmb();
__iowrite64_copy(cq->dpi->dbr, &db_msg, sizeof(db_msg) / sizeof(u64));
}
int bnxt_qplib_create_cq(struct bnxt_qplib_res *res, struct bnxt_qplib_cq *cq)
{
struct bnxt_qplib_rcfw *rcfw = res->rcfw;
struct cmdq_create_cq req;
struct creq_create_cq_resp *resp;
struct bnxt_qplib_pbl *pbl;
u16 cmd_flags = 0;
int rc;
cq->hwq.max_elements = cq->max_wqe;
rc = bnxt_qplib_alloc_init_hwq(res->pdev, &cq->hwq, cq->sghead,
cq->nmap, &cq->hwq.max_elements,
BNXT_QPLIB_MAX_CQE_ENTRY_SIZE, 0,
PAGE_SIZE, HWQ_TYPE_QUEUE);
if (rc)
goto exit;
RCFW_CMD_PREP(req, CREATE_CQ, cmd_flags);
if (!cq->dpi) {
dev_err(&rcfw->pdev->dev,
"QPLIB: FP: CREATE_CQ failed due to NULL DPI");
return -EINVAL;
}
req.dpi = cpu_to_le32(cq->dpi->dpi);
req.cq_handle = cpu_to_le64(cq->cq_handle);
req.cq_size = cpu_to_le32(cq->hwq.max_elements);
pbl = &cq->hwq.pbl[PBL_LVL_0];
req.pg_size_lvl = cpu_to_le32(
((cq->hwq.level & CMDQ_CREATE_CQ_LVL_MASK) <<
CMDQ_CREATE_CQ_LVL_SFT) |
(pbl->pg_size == ROCE_PG_SIZE_4K ? CMDQ_CREATE_CQ_PG_SIZE_PG_4K :
pbl->pg_size == ROCE_PG_SIZE_8K ? CMDQ_CREATE_CQ_PG_SIZE_PG_8K :
pbl->pg_size == ROCE_PG_SIZE_64K ? CMDQ_CREATE_CQ_PG_SIZE_PG_64K :
pbl->pg_size == ROCE_PG_SIZE_2M ? CMDQ_CREATE_CQ_PG_SIZE_PG_2M :
pbl->pg_size == ROCE_PG_SIZE_8M ? CMDQ_CREATE_CQ_PG_SIZE_PG_8M :
pbl->pg_size == ROCE_PG_SIZE_1G ? CMDQ_CREATE_CQ_PG_SIZE_PG_1G :
CMDQ_CREATE_CQ_PG_SIZE_PG_4K));
req.pbl = cpu_to_le64(pbl->pg_map_arr[0]);
req.cq_fco_cnq_id = cpu_to_le32(
(cq->cnq_hw_ring_id & CMDQ_CREATE_CQ_CNQ_ID_MASK) <<
CMDQ_CREATE_CQ_CNQ_ID_SFT);
resp = (struct creq_create_cq_resp *)
bnxt_qplib_rcfw_send_message(rcfw, (void *)&req,
NULL, 0);
if (!resp) {
dev_err(&rcfw->pdev->dev, "QPLIB: FP: CREATE_CQ send failed");
return -EINVAL;
}
if (!bnxt_qplib_rcfw_wait_for_resp(rcfw, le16_to_cpu(req.cookie))) {
/* Cmd timed out */
dev_err(&rcfw->pdev->dev, "QPLIB: FP: CREATE_CQ timed out");
rc = -ETIMEDOUT;
goto fail;
}
if (resp->status ||
le16_to_cpu(resp->cookie) != le16_to_cpu(req.cookie)) {
dev_err(&rcfw->pdev->dev, "QPLIB: FP: CREATE_CQ failed ");
dev_err(&rcfw->pdev->dev,
"QPLIB: with status 0x%x cmdq 0x%x resp 0x%x",
resp->status, le16_to_cpu(req.cookie),
le16_to_cpu(resp->cookie));
rc = -EINVAL;
goto fail;
}
cq->id = le32_to_cpu(resp->xid);
cq->dbr_base = res->dpi_tbl.dbr_bar_reg_iomem;
cq->period = BNXT_QPLIB_QUEUE_START_PERIOD;
init_waitqueue_head(&cq->waitq);
bnxt_qplib_arm_cq_enable(cq);
return 0;
fail:
bnxt_qplib_free_hwq(res->pdev, &cq->hwq);
exit:
return rc;
}
int bnxt_qplib_destroy_cq(struct bnxt_qplib_res *res, struct bnxt_qplib_cq *cq)
{
struct bnxt_qplib_rcfw *rcfw = res->rcfw;
struct cmdq_destroy_cq req;
struct creq_destroy_cq_resp *resp;
u16 cmd_flags = 0;
RCFW_CMD_PREP(req, DESTROY_CQ, cmd_flags);
req.cq_cid = cpu_to_le32(cq->id);
resp = (struct creq_destroy_cq_resp *)
bnxt_qplib_rcfw_send_message(rcfw, (void *)&req,
NULL, 0);
if (!resp) {
dev_err(&rcfw->pdev->dev, "QPLIB: FP: DESTROY_CQ send failed");
return -EINVAL;
}
if (!bnxt_qplib_rcfw_wait_for_resp(rcfw, le16_to_cpu(req.cookie))) {
/* Cmd timed out */
dev_err(&rcfw->pdev->dev, "QPLIB: FP: DESTROY_CQ timed out");
return -ETIMEDOUT;
}
if (resp->status ||
le16_to_cpu(resp->cookie) != le16_to_cpu(req.cookie)) {
dev_err(&rcfw->pdev->dev, "QPLIB: FP: DESTROY_CQ failed ");
dev_err(&rcfw->pdev->dev,
"QPLIB: with status 0x%x cmdq 0x%x resp 0x%x",
resp->status, le16_to_cpu(req.cookie),
le16_to_cpu(resp->cookie));
return -EINVAL;
}
bnxt_qplib_free_hwq(res->pdev, &cq->hwq);
return 0;
}
static int __flush_sq(struct bnxt_qplib_q *sq, struct bnxt_qplib_qp *qp,
struct bnxt_qplib_cqe **pcqe, int *budget)
{
u32 sw_prod, sw_cons;
struct bnxt_qplib_cqe *cqe;
int rc = 0;
/* Now complete all outstanding SQEs with FLUSHED_ERR */
sw_prod = HWQ_CMP(sq->hwq.prod, &sq->hwq);
cqe = *pcqe;
while (*budget) {
sw_cons = HWQ_CMP(sq->hwq.cons, &sq->hwq);
if (sw_cons == sw_prod) {
sq->flush_in_progress = false;
break;
}
memset(cqe, 0, sizeof(*cqe));
cqe->status = CQ_REQ_STATUS_WORK_REQUEST_FLUSHED_ERR;
cqe->opcode = CQ_BASE_CQE_TYPE_REQ;
cqe->qp_handle = (u64)(unsigned long)qp;
cqe->wr_id = sq->swq[sw_cons].wr_id;
cqe->src_qp = qp->id;
cqe->type = sq->swq[sw_cons].type;
cqe++;
(*budget)--;
sq->hwq.cons++;
}
*pcqe = cqe;
if (!(*budget) && HWQ_CMP(sq->hwq.cons, &sq->hwq) != sw_prod)
/* Out of budget */
rc = -EAGAIN;
return rc;
}
static int __flush_rq(struct bnxt_qplib_q *rq, struct bnxt_qplib_qp *qp,
int opcode, struct bnxt_qplib_cqe **pcqe, int *budget)
{
struct bnxt_qplib_cqe *cqe;
u32 sw_prod, sw_cons;
int rc = 0;
/* Flush the rest of the RQ */
sw_prod = HWQ_CMP(rq->hwq.prod, &rq->hwq);
cqe = *pcqe;
while (*budget) {
sw_cons = HWQ_CMP(rq->hwq.cons, &rq->hwq);
if (sw_cons == sw_prod)
break;
memset(cqe, 0, sizeof(*cqe));
cqe->status =
CQ_RES_RC_STATUS_WORK_REQUEST_FLUSHED_ERR;
cqe->opcode = opcode;
cqe->qp_handle = (unsigned long)qp;
cqe->wr_id = rq->swq[sw_cons].wr_id;
cqe++;
(*budget)--;
rq->hwq.cons++;
}
*pcqe = cqe;
if (!*budget && HWQ_CMP(rq->hwq.cons, &rq->hwq) != sw_prod)
/* Out of budget */
rc = -EAGAIN;
return rc;
}
static int bnxt_qplib_cq_process_req(struct bnxt_qplib_cq *cq,
struct cq_req *hwcqe,
struct bnxt_qplib_cqe **pcqe, int *budget)
{
struct bnxt_qplib_qp *qp;
struct bnxt_qplib_q *sq;
struct bnxt_qplib_cqe *cqe;
u32 sw_cons, cqe_cons;
int rc = 0;
qp = (struct bnxt_qplib_qp *)((unsigned long)
le64_to_cpu(hwcqe->qp_handle));
if (!qp) {
dev_err(&cq->hwq.pdev->dev,
"QPLIB: FP: Process Req qp is NULL");
return -EINVAL;
}
sq = &qp->sq;
cqe_cons = HWQ_CMP(le16_to_cpu(hwcqe->sq_cons_idx), &sq->hwq);
if (cqe_cons > sq->hwq.max_elements) {
dev_err(&cq->hwq.pdev->dev,
"QPLIB: FP: CQ Process req reported ");
dev_err(&cq->hwq.pdev->dev,
"QPLIB: sq_cons_idx 0x%x which exceeded max 0x%x",
cqe_cons, sq->hwq.max_elements);
return -EINVAL;
}
/* If we were in the middle of flushing the SQ, continue */
if (sq->flush_in_progress)
goto flush;
/* Require to walk the sq's swq to fabricate CQEs for all previously
* signaled SWQEs due to CQE aggregation from the current sq cons
* to the cqe_cons
*/
cqe = *pcqe;
while (*budget) {
sw_cons = HWQ_CMP(sq->hwq.cons, &sq->hwq);
if (sw_cons == cqe_cons)
break;
memset(cqe, 0, sizeof(*cqe));
cqe->opcode = CQ_BASE_CQE_TYPE_REQ;
cqe->qp_handle = (u64)(unsigned long)qp;
cqe->src_qp = qp->id;
cqe->wr_id = sq->swq[sw_cons].wr_id;
cqe->type = sq->swq[sw_cons].type;
/* For the last CQE, check for status. For errors, regardless
* of the request being signaled or not, it must complete with
* the hwcqe error status
*/
if (HWQ_CMP((sw_cons + 1), &sq->hwq) == cqe_cons &&
hwcqe->status != CQ_REQ_STATUS_OK) {
cqe->status = hwcqe->status;
dev_err(&cq->hwq.pdev->dev,
"QPLIB: FP: CQ Processed Req ");
dev_err(&cq->hwq.pdev->dev,
"QPLIB: wr_id[%d] = 0x%llx with status 0x%x",
sw_cons, cqe->wr_id, cqe->status);
cqe++;
(*budget)--;
sq->flush_in_progress = true;
/* Must block new posting of SQ and RQ */
qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
} else {
if (sq->swq[sw_cons].flags &
SQ_SEND_FLAGS_SIGNAL_COMP) {
cqe->status = CQ_REQ_STATUS_OK;
cqe++;
(*budget)--;
}
}
sq->hwq.cons++;
}
*pcqe = cqe;
if (!*budget && HWQ_CMP(sq->hwq.cons, &sq->hwq) != cqe_cons) {
/* Out of budget */
rc = -EAGAIN;
goto done;
}
if (!sq->flush_in_progress)
goto done;
flush:
/* Require to walk the sq's swq to fabricate CQEs for all
* previously posted SWQEs due to the error CQE received
*/
rc = __flush_sq(sq, qp, pcqe, budget);
if (!rc)
sq->flush_in_progress = false;
done:
return rc;
}
static int bnxt_qplib_cq_process_res_rc(struct bnxt_qplib_cq *cq,
struct cq_res_rc *hwcqe,
struct bnxt_qplib_cqe **pcqe,
int *budget)
{
struct bnxt_qplib_qp *qp;
struct bnxt_qplib_q *rq;
struct bnxt_qplib_cqe *cqe;
u32 wr_id_idx;
int rc = 0;
qp = (struct bnxt_qplib_qp *)((unsigned long)
le64_to_cpu(hwcqe->qp_handle));
if (!qp) {
dev_err(&cq->hwq.pdev->dev, "QPLIB: process_cq RC qp is NULL");
return -EINVAL;
}
cqe = *pcqe;
cqe->opcode = hwcqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK;
cqe->length = le32_to_cpu(hwcqe->length);
cqe->invrkey = le32_to_cpu(hwcqe->imm_data_or_inv_r_key);
cqe->mr_handle = le64_to_cpu(hwcqe->mr_handle);
cqe->flags = le16_to_cpu(hwcqe->flags);
cqe->status = hwcqe->status;
cqe->qp_handle = (u64)(unsigned long)qp;
wr_id_idx = le32_to_cpu(hwcqe->srq_or_rq_wr_id) &
CQ_RES_RC_SRQ_OR_RQ_WR_ID_MASK;
rq = &qp->rq;
if (wr_id_idx > rq->hwq.max_elements) {
dev_err(&cq->hwq.pdev->dev, "QPLIB: FP: CQ Process RC ");
dev_err(&cq->hwq.pdev->dev,
"QPLIB: wr_id idx 0x%x exceeded RQ max 0x%x",
wr_id_idx, rq->hwq.max_elements);
return -EINVAL;
}
if (rq->flush_in_progress)
goto flush_rq;
cqe->wr_id = rq->swq[wr_id_idx].wr_id;
cqe++;
(*budget)--;
rq->hwq.cons++;
*pcqe = cqe;
if (hwcqe->status != CQ_RES_RC_STATUS_OK) {
rq->flush_in_progress = true;
flush_rq:
rc = __flush_rq(rq, qp, CQ_BASE_CQE_TYPE_RES_RC, pcqe, budget);
if (!rc)
rq->flush_in_progress = false;
}
return rc;
}
static int bnxt_qplib_cq_process_res_ud(struct bnxt_qplib_cq *cq,
struct cq_res_ud *hwcqe,
struct bnxt_qplib_cqe **pcqe,
int *budget)
{
struct bnxt_qplib_qp *qp;
struct bnxt_qplib_q *rq;
struct bnxt_qplib_cqe *cqe;
u32 wr_id_idx;
int rc = 0;
qp = (struct bnxt_qplib_qp *)((unsigned long)
le64_to_cpu(hwcqe->qp_handle));
if (!qp) {
dev_err(&cq->hwq.pdev->dev, "QPLIB: process_cq UD qp is NULL");
return -EINVAL;
}
cqe = *pcqe;
cqe->opcode = hwcqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK;
cqe->length = le32_to_cpu(hwcqe->length);
cqe->invrkey = le32_to_cpu(hwcqe->imm_data);
cqe->flags = le16_to_cpu(hwcqe->flags);
cqe->status = hwcqe->status;
cqe->qp_handle = (u64)(unsigned long)qp;
memcpy(cqe->smac, hwcqe->src_mac, 6);
wr_id_idx = le32_to_cpu(hwcqe->src_qp_high_srq_or_rq_wr_id)
& CQ_RES_UD_SRQ_OR_RQ_WR_ID_MASK;
cqe->src_qp = le16_to_cpu(hwcqe->src_qp_low) |
((le32_to_cpu(
hwcqe->src_qp_high_srq_or_rq_wr_id) &
CQ_RES_UD_SRC_QP_HIGH_MASK) >> 8);
rq = &qp->rq;
if (wr_id_idx > rq->hwq.max_elements) {
dev_err(&cq->hwq.pdev->dev, "QPLIB: FP: CQ Process UD ");
dev_err(&cq->hwq.pdev->dev,
"QPLIB: wr_id idx %#x exceeded RQ max %#x",
wr_id_idx, rq->hwq.max_elements);
return -EINVAL;
}
if (rq->flush_in_progress)
goto flush_rq;
cqe->wr_id = rq->swq[wr_id_idx].wr_id;
cqe++;
(*budget)--;
rq->hwq.cons++;
*pcqe = cqe;
if (hwcqe->status != CQ_RES_RC_STATUS_OK) {
rq->flush_in_progress = true;
flush_rq:
rc = __flush_rq(rq, qp, CQ_BASE_CQE_TYPE_RES_UD, pcqe, budget);
if (!rc)
rq->flush_in_progress = false;
}
return rc;
}
static int bnxt_qplib_cq_process_res_raweth_qp1(struct bnxt_qplib_cq *cq,
struct cq_res_raweth_qp1 *hwcqe,
struct bnxt_qplib_cqe **pcqe,
int *budget)
{
struct bnxt_qplib_qp *qp;
struct bnxt_qplib_q *rq;
struct bnxt_qplib_cqe *cqe;
u32 wr_id_idx;
int rc = 0;
qp = (struct bnxt_qplib_qp *)((unsigned long)
le64_to_cpu(hwcqe->qp_handle));
if (!qp) {
dev_err(&cq->hwq.pdev->dev,
"QPLIB: process_cq Raw/QP1 qp is NULL");
return -EINVAL;
}
cqe = *pcqe;
cqe->opcode = hwcqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK;
cqe->flags = le16_to_cpu(hwcqe->flags);
cqe->qp_handle = (u64)(unsigned long)qp;
wr_id_idx =
le32_to_cpu(hwcqe->raweth_qp1_payload_offset_srq_or_rq_wr_id)
& CQ_RES_RAWETH_QP1_SRQ_OR_RQ_WR_ID_MASK;
cqe->src_qp = qp->id;
if (qp->id == 1 && !cqe->length) {
/* Add workaround for the length misdetection */
cqe->length = 296;
} else {
cqe->length = le16_to_cpu(hwcqe->length);
}
cqe->pkey_index = qp->pkey_index;
memcpy(cqe->smac, qp->smac, 6);
cqe->raweth_qp1_flags = le16_to_cpu(hwcqe->raweth_qp1_flags);
cqe->raweth_qp1_flags2 = le32_to_cpu(hwcqe->raweth_qp1_flags2);
rq = &qp->rq;
if (wr_id_idx > rq->hwq.max_elements) {
dev_err(&cq->hwq.pdev->dev, "QPLIB: FP: CQ Process Raw/QP1 RQ wr_id ");
dev_err(&cq->hwq.pdev->dev, "QPLIB: ix 0x%x exceeded RQ max 0x%x",
wr_id_idx, rq->hwq.max_elements);
return -EINVAL;
}
if (rq->flush_in_progress)
goto flush_rq;
cqe->wr_id = rq->swq[wr_id_idx].wr_id;
cqe++;
(*budget)--;
rq->hwq.cons++;
*pcqe = cqe;
if (hwcqe->status != CQ_RES_RC_STATUS_OK) {
rq->flush_in_progress = true;
flush_rq:
rc = __flush_rq(rq, qp, CQ_BASE_CQE_TYPE_RES_RAWETH_QP1, pcqe,
budget);
if (!rc)
rq->flush_in_progress = false;
}
return rc;
}
static int bnxt_qplib_cq_process_terminal(struct bnxt_qplib_cq *cq,
struct cq_terminal *hwcqe,
struct bnxt_qplib_cqe **pcqe,
int *budget)
{
struct bnxt_qplib_qp *qp;
struct bnxt_qplib_q *sq, *rq;
struct bnxt_qplib_cqe *cqe;
u32 sw_cons = 0, cqe_cons;
int rc = 0;
u8 opcode = 0;
/* Check the Status */
if (hwcqe->status != CQ_TERMINAL_STATUS_OK)
dev_warn(&cq->hwq.pdev->dev,
"QPLIB: FP: CQ Process Terminal Error status = 0x%x",
hwcqe->status);
qp = (struct bnxt_qplib_qp *)((unsigned long)
le64_to_cpu(hwcqe->qp_handle));
if (!qp) {
dev_err(&cq->hwq.pdev->dev,
"QPLIB: FP: CQ Process terminal qp is NULL");
return -EINVAL;
}
/* Must block new posting of SQ and RQ */
qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
sq = &qp->sq;
rq = &qp->rq;
cqe_cons = le16_to_cpu(hwcqe->sq_cons_idx);
if (cqe_cons == 0xFFFF)
goto do_rq;
if (cqe_cons > sq->hwq.max_elements) {
dev_err(&cq->hwq.pdev->dev,
"QPLIB: FP: CQ Process terminal reported ");
dev_err(&cq->hwq.pdev->dev,
"QPLIB: sq_cons_idx 0x%x which exceeded max 0x%x",
cqe_cons, sq->hwq.max_elements);
goto do_rq;
}
/* If we were in the middle of flushing, continue */
if (sq->flush_in_progress)
goto flush_sq;
/* Terminal CQE can also include aggregated successful CQEs prior.
* So we must complete all CQEs from the current sq's cons to the
* cq_cons with status OK
*/
cqe = *pcqe;
while (*budget) {
sw_cons = HWQ_CMP(sq->hwq.cons, &sq->hwq);
if (sw_cons == cqe_cons)
break;
if (sq->swq[sw_cons].flags & SQ_SEND_FLAGS_SIGNAL_COMP) {
memset(cqe, 0, sizeof(*cqe));
cqe->status = CQ_REQ_STATUS_OK;
cqe->opcode = CQ_BASE_CQE_TYPE_REQ;
cqe->qp_handle = (u64)(unsigned long)qp;
cqe->src_qp = qp->id;
cqe->wr_id = sq->swq[sw_cons].wr_id;
cqe->type = sq->swq[sw_cons].type;
cqe++;
(*budget)--;
}
sq->hwq.cons++;
}
*pcqe = cqe;
if (!(*budget) && sw_cons != cqe_cons) {
/* Out of budget */
rc = -EAGAIN;
goto sq_done;
}
sq->flush_in_progress = true;
flush_sq:
rc = __flush_sq(sq, qp, pcqe, budget);
if (!rc)
sq->flush_in_progress = false;
sq_done:
if (rc)
return rc;
do_rq:
cqe_cons = le16_to_cpu(hwcqe->rq_cons_idx);
if (cqe_cons == 0xFFFF) {
goto done;
} else if (cqe_cons > rq->hwq.max_elements) {
dev_err(&cq->hwq.pdev->dev,
"QPLIB: FP: CQ Processed terminal ");
dev_err(&cq->hwq.pdev->dev,
"QPLIB: reported rq_cons_idx 0x%x exceeds max 0x%x",
cqe_cons, rq->hwq.max_elements);
goto done;
}
/* Terminal CQE requires all posted RQEs to complete with FLUSHED_ERR
* from the current rq->cons to the rq->prod regardless what the
* rq->cons the terminal CQE indicates
*/
rq->flush_in_progress = true;
switch (qp->type) {
case CMDQ_CREATE_QP1_TYPE_GSI:
opcode = CQ_BASE_CQE_TYPE_RES_RAWETH_QP1;
break;
case CMDQ_CREATE_QP_TYPE_RC:
opcode = CQ_BASE_CQE_TYPE_RES_RC;
break;
case CMDQ_CREATE_QP_TYPE_UD:
opcode = CQ_BASE_CQE_TYPE_RES_UD;
break;
}
rc = __flush_rq(rq, qp, opcode, pcqe, budget);
if (!rc)
rq->flush_in_progress = false;
done:
return rc;
}
static int bnxt_qplib_cq_process_cutoff(struct bnxt_qplib_cq *cq,
struct cq_cutoff *hwcqe)
{
/* Check the Status */
if (hwcqe->status != CQ_CUTOFF_STATUS_OK) {
dev_err(&cq->hwq.pdev->dev,
"QPLIB: FP: CQ Process Cutoff Error status = 0x%x",
hwcqe->status);
return -EINVAL;
}
clear_bit(CQ_FLAGS_RESIZE_IN_PROG, &cq->flags);
wake_up_interruptible(&cq->waitq);
return 0;
}
int bnxt_qplib_poll_cq(struct bnxt_qplib_cq *cq, struct bnxt_qplib_cqe *cqe,
int num_cqes)
{
struct cq_base *hw_cqe, **hw_cqe_ptr;
unsigned long flags;
u32 sw_cons, raw_cons;
int budget, rc = 0;
spin_lock_irqsave(&cq->hwq.lock, flags);
raw_cons = cq->hwq.cons;
budget = num_cqes;
while (budget) {
sw_cons = HWQ_CMP(raw_cons, &cq->hwq);
hw_cqe_ptr = (struct cq_base **)cq->hwq.pbl_ptr;
hw_cqe = &hw_cqe_ptr[CQE_PG(sw_cons)][CQE_IDX(sw_cons)];
/* Check for Valid bit */
if (!CQE_CMP_VALID(hw_cqe, raw_cons, cq->hwq.max_elements))
break;
/* From the device's respective CQE format to qplib_wc*/
switch (hw_cqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK) {
case CQ_BASE_CQE_TYPE_REQ:
rc = bnxt_qplib_cq_process_req(cq,
(struct cq_req *)hw_cqe,
&cqe, &budget);
break;
case CQ_BASE_CQE_TYPE_RES_RC:
rc = bnxt_qplib_cq_process_res_rc(cq,
(struct cq_res_rc *)
hw_cqe, &cqe,
&budget);
break;
case CQ_BASE_CQE_TYPE_RES_UD:
rc = bnxt_qplib_cq_process_res_ud
(cq, (struct cq_res_ud *)hw_cqe, &cqe,
&budget);
break;
case CQ_BASE_CQE_TYPE_RES_RAWETH_QP1:
rc = bnxt_qplib_cq_process_res_raweth_qp1
(cq, (struct cq_res_raweth_qp1 *)
hw_cqe, &cqe, &budget);
break;
case CQ_BASE_CQE_TYPE_TERMINAL:
rc = bnxt_qplib_cq_process_terminal
(cq, (struct cq_terminal *)hw_cqe,
&cqe, &budget);
break;
case CQ_BASE_CQE_TYPE_CUT_OFF:
bnxt_qplib_cq_process_cutoff
(cq, (struct cq_cutoff *)hw_cqe);
/* Done processing this CQ */
goto exit;
default:
dev_err(&cq->hwq.pdev->dev,
"QPLIB: process_cq unknown type 0x%lx",
hw_cqe->cqe_type_toggle &
CQ_BASE_CQE_TYPE_MASK);
rc = -EINVAL;
break;
}
if (rc < 0) {
if (rc == -EAGAIN)
break;
/* Error while processing the CQE, just skip to the
* next one
*/
dev_err(&cq->hwq.pdev->dev,
"QPLIB: process_cqe error rc = 0x%x", rc);
}
raw_cons++;
}
if (cq->hwq.cons != raw_cons) {
cq->hwq.cons = raw_cons;
bnxt_qplib_arm_cq(cq, DBR_DBR_TYPE_CQ);
}
exit:
spin_unlock_irqrestore(&cq->hwq.lock, flags);
return num_cqes - budget;
}
void bnxt_qplib_req_notify_cq(struct bnxt_qplib_cq *cq, u32 arm_type)
{
unsigned long flags;
spin_lock_irqsave(&cq->hwq.lock, flags);
if (arm_type)
bnxt_qplib_arm_cq(cq, arm_type);
spin_unlock_irqrestore(&cq->hwq.lock, flags);
}
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