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freebsd-skq/sys/dev/ocs_fc/ocs_hw_queues.c
ram dd9eabc56f Fixed issues reported by coverity scan. 
Approved by: mav
MFC after: 3 weeks
2019-01-23 17:34:01 +00:00

2614 lines
66 KiB
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/*-
* Copyright (c) 2017 Broadcom. All rights reserved.
* The term "Broadcom" refers to Broadcom Limited and/or its subsidiaries.
*
* 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.
*
* 3. Neither the name of the copyright holder nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* 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.
*
* $FreeBSD$
*/
/**
* @file
*
*/
#include "ocs_os.h"
#include "ocs_hw.h"
#include "ocs_hw_queues.h"
#define HW_QTOP_DEBUG 0
/**
* @brief Initialize queues
*
* Given the parsed queue topology spec, the SLI queues are created and
* initialized
*
* @param hw pointer to HW object
* @param qtop pointer to queue topology
*
* @return returns 0 for success, an error code value for failure.
*/
ocs_hw_rtn_e
ocs_hw_init_queues(ocs_hw_t *hw, ocs_hw_qtop_t *qtop)
{
uint32_t i, j;
uint32_t default_lengths[QTOP_LAST], len;
uint32_t rqset_len = 0, rqset_ulp = 0, rqset_count = 0;
uint8_t rqset_filter_mask = 0;
hw_eq_t *eqs[hw->config.n_rq];
hw_cq_t *cqs[hw->config.n_rq];
hw_rq_t *rqs[hw->config.n_rq];
ocs_hw_qtop_entry_t *qt, *next_qt;
ocs_hw_mrq_t mrq;
bool use_mrq = FALSE;
hw_eq_t *eq = NULL;
hw_cq_t *cq = NULL;
hw_wq_t *wq = NULL;
hw_rq_t *rq = NULL;
hw_mq_t *mq = NULL;
mrq.num_pairs = 0;
default_lengths[QTOP_EQ] = 1024;
default_lengths[QTOP_CQ] = hw->num_qentries[SLI_QTYPE_CQ];
default_lengths[QTOP_WQ] = hw->num_qentries[SLI_QTYPE_WQ];
default_lengths[QTOP_RQ] = hw->num_qentries[SLI_QTYPE_RQ];
default_lengths[QTOP_MQ] = OCS_HW_MQ_DEPTH;
ocs_hw_verify(hw != NULL, OCS_HW_RTN_INVALID_ARG);
hw->eq_count = 0;
hw->cq_count = 0;
hw->mq_count = 0;
hw->wq_count = 0;
hw->rq_count = 0;
hw->hw_rq_count = 0;
ocs_list_init(&hw->eq_list, hw_eq_t, link);
/* If MRQ is requested, Check if it is supported by SLI. */
if ((hw->config.n_rq > 1 ) && !hw->sli.config.features.flag.mrqp) {
ocs_log_err(hw->os, "MRQ topology not supported by SLI4.\n");
return OCS_HW_RTN_ERROR;
}
if (hw->config.n_rq > 1)
use_mrq = TRUE;
/* Allocate class WQ pools */
for (i = 0; i < ARRAY_SIZE(hw->wq_class_array); i++) {
hw->wq_class_array[i] = ocs_varray_alloc(hw->os, OCS_HW_MAX_NUM_WQ);
if (hw->wq_class_array[i] == NULL) {
ocs_log_err(hw->os, "ocs_varray_alloc for wq_class failed\n");
return OCS_HW_RTN_NO_MEMORY;
}
}
/* Allocate per CPU WQ pools */
for (i = 0; i < ARRAY_SIZE(hw->wq_cpu_array); i++) {
hw->wq_cpu_array[i] = ocs_varray_alloc(hw->os, OCS_HW_MAX_NUM_WQ);
if (hw->wq_cpu_array[i] == NULL) {
ocs_log_err(hw->os, "ocs_varray_alloc for wq_class failed\n");
return OCS_HW_RTN_NO_MEMORY;
}
}
ocs_hw_assert(qtop != NULL);
for (i = 0, qt = qtop->entries; i < qtop->inuse_count; i++, qt++) {
if (i == qtop->inuse_count - 1)
next_qt = NULL;
else
next_qt = qt + 1;
switch(qt->entry) {
case QTOP_EQ:
len = (qt->len) ? qt->len : default_lengths[QTOP_EQ];
if (qt->set_default) {
default_lengths[QTOP_EQ] = len;
break;
}
eq = hw_new_eq(hw, len);
if (eq == NULL) {
hw_queue_teardown(hw);
return OCS_HW_RTN_NO_MEMORY;
}
break;
case QTOP_CQ:
len = (qt->len) ? qt->len : default_lengths[QTOP_CQ];
if (qt->set_default) {
default_lengths[QTOP_CQ] = len;
break;
}
if (!eq || !next_qt) {
goto fail;
}
/* If this CQ is for MRQ, then delay the creation */
if (!use_mrq || next_qt->entry != QTOP_RQ) {
cq = hw_new_cq(eq, len);
if (cq == NULL) {
goto fail;
}
}
break;
case QTOP_WQ: {
len = (qt->len) ? qt->len : default_lengths[QTOP_WQ];
if (qt->set_default) {
default_lengths[QTOP_WQ] = len;
break;
}
if ((hw->ulp_start + qt->ulp) > hw->ulp_max) {
ocs_log_err(hw->os, "invalid ULP %d for WQ\n", qt->ulp);
hw_queue_teardown(hw);
return OCS_HW_RTN_NO_MEMORY;
}
if (cq == NULL)
goto fail;
wq = hw_new_wq(cq, len, qt->class, hw->ulp_start + qt->ulp);
if (wq == NULL) {
goto fail;
}
/* Place this WQ on the EQ WQ array */
if (ocs_varray_add(eq->wq_array, wq)) {
ocs_log_err(hw->os, "QTOP_WQ: EQ ocs_varray_add failed\n");
hw_queue_teardown(hw);
return OCS_HW_RTN_ERROR;
}
/* Place this WQ on the HW class array */
if (qt->class < ARRAY_SIZE(hw->wq_class_array)) {
if (ocs_varray_add(hw->wq_class_array[qt->class], wq)) {
ocs_log_err(hw->os, "HW wq_class_array ocs_varray_add failed\n");
hw_queue_teardown(hw);
return OCS_HW_RTN_ERROR;
}
} else {
ocs_log_err(hw->os, "Invalid class value: %d\n", qt->class);
hw_queue_teardown(hw);
return OCS_HW_RTN_ERROR;
}
/*
* Place this WQ on the per CPU list, asumming that EQs are mapped to cpu given
* by the EQ instance modulo number of CPUs
*/
if (ocs_varray_add(hw->wq_cpu_array[eq->instance % ocs_get_num_cpus()], wq)) {
ocs_log_err(hw->os, "HW wq_cpu_array ocs_varray_add failed\n");
hw_queue_teardown(hw);
return OCS_HW_RTN_ERROR;
}
break;
}
case QTOP_RQ: {
len = (qt->len) ? qt->len : default_lengths[QTOP_RQ];
if (qt->set_default) {
default_lengths[QTOP_RQ] = len;
break;
}
if ((hw->ulp_start + qt->ulp) > hw->ulp_max) {
ocs_log_err(hw->os, "invalid ULP %d for RQ\n", qt->ulp);
hw_queue_teardown(hw);
return OCS_HW_RTN_NO_MEMORY;
}
if (use_mrq) {
mrq.rq_cfg[mrq.num_pairs].len = len;
mrq.rq_cfg[mrq.num_pairs].ulp = hw->ulp_start + qt->ulp;
mrq.rq_cfg[mrq.num_pairs].filter_mask = qt->filter_mask;
mrq.rq_cfg[mrq.num_pairs].eq = eq;
mrq.num_pairs ++;
} else {
rq = hw_new_rq(cq, len, hw->ulp_start + qt->ulp);
if (rq == NULL) {
hw_queue_teardown(hw);
return OCS_HW_RTN_NO_MEMORY;
}
rq->filter_mask = qt->filter_mask;
}
break;
}
case QTOP_MQ:
len = (qt->len) ? qt->len : default_lengths[QTOP_MQ];
if (qt->set_default) {
default_lengths[QTOP_MQ] = len;
break;
}
if (cq == NULL)
goto fail;
mq = hw_new_mq(cq, len);
if (mq == NULL) {
goto fail;
}
break;
default:
ocs_hw_assert(0);
break;
}
}
if (mrq.num_pairs) {
/* First create normal RQs. */
for (i = 0; i < mrq.num_pairs; i++) {
for (j = 0; j < mrq.num_pairs; j++) {
if ((i != j) && (mrq.rq_cfg[i].filter_mask == mrq.rq_cfg[j].filter_mask)) {
/* This should be created using set */
if (rqset_filter_mask && (rqset_filter_mask != mrq.rq_cfg[i].filter_mask)) {
ocs_log_crit(hw->os, "Cant create morethan one RQ Set\n");
hw_queue_teardown(hw);
return OCS_HW_RTN_ERROR;
} else if (!rqset_filter_mask){
rqset_filter_mask = mrq.rq_cfg[i].filter_mask;
rqset_len = mrq.rq_cfg[i].len;
rqset_ulp = mrq.rq_cfg[i].ulp;
}
eqs[rqset_count] = mrq.rq_cfg[i].eq;
rqset_count++;
break;
}
}
if (j == mrq.num_pairs) {
/* Normal RQ */
cq = hw_new_cq(mrq.rq_cfg[i].eq, default_lengths[QTOP_CQ]);
if (cq == NULL) {
hw_queue_teardown(hw);
return OCS_HW_RTN_NO_MEMORY;
}
rq = hw_new_rq(cq, mrq.rq_cfg[i].len, mrq.rq_cfg[i].ulp);
if (rq == NULL) {
hw_queue_teardown(hw);
return OCS_HW_RTN_NO_MEMORY;
}
rq->filter_mask = mrq.rq_cfg[i].filter_mask;
}
}
/* Now create RQ Set */
if (rqset_count) {
if (rqset_count > OCE_HW_MAX_NUM_MRQ_PAIRS) {
ocs_log_crit(hw->os,
"Max Supported MRQ pairs = %d\n",
OCE_HW_MAX_NUM_MRQ_PAIRS);
hw_queue_teardown(hw);
return OCS_HW_RTN_ERROR;
}
/* Create CQ set */
if (hw_new_cq_set(eqs, cqs, rqset_count, default_lengths[QTOP_CQ])) {
hw_queue_teardown(hw);
return OCS_HW_RTN_ERROR;
}
/* Create RQ set */
if (hw_new_rq_set(cqs, rqs, rqset_count, rqset_len, rqset_ulp)) {
hw_queue_teardown(hw);
return OCS_HW_RTN_ERROR;
}
for (i = 0; i < rqset_count ; i++) {
rqs[i]->filter_mask = rqset_filter_mask;
rqs[i]->is_mrq = TRUE;
rqs[i]->base_mrq_id = rqs[0]->hdr->id;
}
hw->hw_mrq_count = rqset_count;
}
}
return OCS_HW_RTN_SUCCESS;
fail:
hw_queue_teardown(hw);
return OCS_HW_RTN_NO_MEMORY;
}
/**
* @brief Allocate a new EQ object
*
* A new EQ object is instantiated
*
* @param hw pointer to HW object
* @param entry_count number of entries in the EQ
*
* @return pointer to allocated EQ object
*/
hw_eq_t*
hw_new_eq(ocs_hw_t *hw, uint32_t entry_count)
{
hw_eq_t *eq = ocs_malloc(hw->os, sizeof(*eq), OCS_M_ZERO | OCS_M_NOWAIT);
if (eq != NULL) {
eq->type = SLI_QTYPE_EQ;
eq->hw = hw;
eq->entry_count = entry_count;
eq->instance = hw->eq_count++;
eq->queue = &hw->eq[eq->instance];
ocs_list_init(&eq->cq_list, hw_cq_t, link);
eq->wq_array = ocs_varray_alloc(hw->os, OCS_HW_MAX_NUM_WQ);
if (eq->wq_array == NULL) {
ocs_free(hw->os, eq, sizeof(*eq));
eq = NULL;
} else {
if (sli_queue_alloc(&hw->sli, SLI_QTYPE_EQ, eq->queue, entry_count, NULL, 0)) {
ocs_log_err(hw->os, "EQ[%d] allocation failure\n", eq->instance);
ocs_free(hw->os, eq, sizeof(*eq));
eq = NULL;
} else {
sli_eq_modify_delay(&hw->sli, eq->queue, 1, 0, 8);
hw->hw_eq[eq->instance] = eq;
ocs_list_add_tail(&hw->eq_list, eq);
ocs_log_debug(hw->os, "create eq[%2d] id %3d len %4d\n", eq->instance, eq->queue->id,
eq->entry_count);
}
}
}
return eq;
}
/**
* @brief Allocate a new CQ object
*
* A new CQ object is instantiated
*
* @param eq pointer to parent EQ object
* @param entry_count number of entries in the CQ
*
* @return pointer to allocated CQ object
*/
hw_cq_t*
hw_new_cq(hw_eq_t *eq, uint32_t entry_count)
{
ocs_hw_t *hw = eq->hw;
hw_cq_t *cq = ocs_malloc(hw->os, sizeof(*cq), OCS_M_ZERO | OCS_M_NOWAIT);
if (cq != NULL) {
cq->eq = eq;
cq->type = SLI_QTYPE_CQ;
cq->instance = eq->hw->cq_count++;
cq->entry_count = entry_count;
cq->queue = &hw->cq[cq->instance];
ocs_list_init(&cq->q_list, hw_q_t, link);
if (sli_queue_alloc(&hw->sli, SLI_QTYPE_CQ, cq->queue, cq->entry_count, eq->queue, 0)) {
ocs_log_err(hw->os, "CQ[%d] allocation failure len=%d\n",
eq->instance,
eq->entry_count);
ocs_free(hw->os, cq, sizeof(*cq));
cq = NULL;
} else {
hw->hw_cq[cq->instance] = cq;
ocs_list_add_tail(&eq->cq_list, cq);
ocs_log_debug(hw->os, "create cq[%2d] id %3d len %4d\n", cq->instance, cq->queue->id,
cq->entry_count);
}
}
return cq;
}
/**
* @brief Allocate a new CQ Set of objects.
*
* @param eqs pointer to a set of EQ objects.
* @param cqs pointer to a set of CQ objects to be returned.
* @param num_cqs number of CQ queues in the set.
* @param entry_count number of entries in the CQ.
*
* @return 0 on success and -1 on failure.
*/
uint32_t
hw_new_cq_set(hw_eq_t *eqs[], hw_cq_t *cqs[], uint32_t num_cqs, uint32_t entry_count)
{
uint32_t i;
ocs_hw_t *hw = eqs[0]->hw;
sli4_t *sli4 = &hw->sli;
hw_cq_t *cq = NULL;
sli4_queue_t *qs[SLI_MAX_CQ_SET_COUNT], *assocs[SLI_MAX_CQ_SET_COUNT];
/* Initialise CQS pointers to NULL */
for (i = 0; i < num_cqs; i++) {
cqs[i] = NULL;
}
for (i = 0; i < num_cqs; i++) {
cq = ocs_malloc(hw->os, sizeof(*cq), OCS_M_ZERO | OCS_M_NOWAIT);
if (cq == NULL)
goto error;
cqs[i] = cq;
cq->eq = eqs[i];
cq->type = SLI_QTYPE_CQ;
cq->instance = hw->cq_count++;
cq->entry_count = entry_count;
cq->queue = &hw->cq[cq->instance];
qs[i] = cq->queue;
assocs[i] = eqs[i]->queue;
ocs_list_init(&cq->q_list, hw_q_t, link);
}
if (sli_cq_alloc_set(sli4, qs, num_cqs, entry_count, assocs)) {
ocs_log_err(NULL, "Failed to create CQ Set. \n");
goto error;
}
for (i = 0; i < num_cqs; i++) {
hw->hw_cq[cqs[i]->instance] = cqs[i];
ocs_list_add_tail(&cqs[i]->eq->cq_list, cqs[i]);
}
return 0;
error:
for (i = 0; i < num_cqs; i++) {
if (cqs[i]) {
ocs_free(hw->os, cqs[i], sizeof(*cqs[i]));
cqs[i] = NULL;
}
}
return -1;
}
/**
* @brief Allocate a new MQ object
*
* A new MQ object is instantiated
*
* @param cq pointer to parent CQ object
* @param entry_count number of entries in the MQ
*
* @return pointer to allocated MQ object
*/
hw_mq_t*
hw_new_mq(hw_cq_t *cq, uint32_t entry_count)
{
ocs_hw_t *hw = cq->eq->hw;
hw_mq_t *mq = ocs_malloc(hw->os, sizeof(*mq), OCS_M_ZERO | OCS_M_NOWAIT);
if (mq != NULL) {
mq->cq = cq;
mq->type = SLI_QTYPE_MQ;
mq->instance = cq->eq->hw->mq_count++;
mq->entry_count = entry_count;
mq->entry_size = OCS_HW_MQ_DEPTH;
mq->queue = &hw->mq[mq->instance];
if (sli_queue_alloc(&hw->sli, SLI_QTYPE_MQ,
mq->queue,
mq->entry_size,
cq->queue, 0)) {
ocs_log_err(hw->os, "MQ allocation failure\n");
ocs_free(hw->os, mq, sizeof(*mq));
mq = NULL;
} else {
hw->hw_mq[mq->instance] = mq;
ocs_list_add_tail(&cq->q_list, mq);
ocs_log_debug(hw->os, "create mq[%2d] id %3d len %4d\n", mq->instance, mq->queue->id,
mq->entry_count);
}
}
return mq;
}
/**
* @brief Allocate a new WQ object
*
* A new WQ object is instantiated
*
* @param cq pointer to parent CQ object
* @param entry_count number of entries in the WQ
* @param class WQ class
* @param ulp index of chute
*
* @return pointer to allocated WQ object
*/
hw_wq_t*
hw_new_wq(hw_cq_t *cq, uint32_t entry_count, uint32_t class, uint32_t ulp)
{
ocs_hw_t *hw = cq->eq->hw;
hw_wq_t *wq = ocs_malloc(hw->os, sizeof(*wq), OCS_M_ZERO | OCS_M_NOWAIT);
if (wq != NULL) {
wq->hw = cq->eq->hw;
wq->cq = cq;
wq->type = SLI_QTYPE_WQ;
wq->instance = cq->eq->hw->wq_count++;
wq->entry_count = entry_count;
wq->queue = &hw->wq[wq->instance];
wq->ulp = ulp;
wq->wqec_set_count = OCS_HW_WQEC_SET_COUNT;
wq->wqec_count = wq->wqec_set_count;
wq->free_count = wq->entry_count - 1;
wq->class = class;
ocs_list_init(&wq->pending_list, ocs_hw_wqe_t, link);
if (sli_queue_alloc(&hw->sli, SLI_QTYPE_WQ, wq->queue, wq->entry_count, cq->queue, ulp)) {
ocs_log_err(hw->os, "WQ allocation failure\n");
ocs_free(hw->os, wq, sizeof(*wq));
wq = NULL;
} else {
hw->hw_wq[wq->instance] = wq;
ocs_list_add_tail(&cq->q_list, wq);
ocs_log_debug(hw->os, "create wq[%2d] id %3d len %4d cls %d ulp %d\n", wq->instance, wq->queue->id,
wq->entry_count, wq->class, wq->ulp);
}
}
return wq;
}
/**
* @brief Allocate a hw_rq_t object
*
* Allocate an RQ object, which encapsulates 2 SLI queues (for rq pair)
*
* @param cq pointer to parent CQ object
* @param entry_count number of entries in the RQs
* @param ulp ULP index for this RQ
*
* @return pointer to newly allocated hw_rq_t
*/
hw_rq_t*
hw_new_rq(hw_cq_t *cq, uint32_t entry_count, uint32_t ulp)
{
ocs_hw_t *hw = cq->eq->hw;
hw_rq_t *rq = ocs_malloc(hw->os, sizeof(*rq), OCS_M_ZERO | OCS_M_NOWAIT);
uint32_t max_hw_rq;
ocs_hw_get(hw, OCS_HW_MAX_RQ_ENTRIES, &max_hw_rq);
if (rq != NULL) {
rq->instance = hw->hw_rq_count++;
rq->cq = cq;
rq->type = SLI_QTYPE_RQ;
rq->ulp = ulp;
rq->entry_count = OCS_MIN(entry_count, OCS_MIN(max_hw_rq, OCS_HW_RQ_NUM_HDR));
/* Create the header RQ */
ocs_hw_assert(hw->rq_count < ARRAY_SIZE(hw->rq));
rq->hdr = &hw->rq[hw->rq_count];
rq->hdr_entry_size = OCS_HW_RQ_HEADER_SIZE;
if (sli_fc_rq_alloc(&hw->sli, rq->hdr,
rq->entry_count,
rq->hdr_entry_size,
cq->queue,
ulp, TRUE)) {
ocs_log_err(hw->os, "RQ allocation failure - header\n");
ocs_free(hw->os, rq, sizeof(*rq));
return NULL;
}
hw->hw_rq_lookup[hw->rq_count] = rq->instance; /* Update hw_rq_lookup[] */
hw->rq_count++;
ocs_log_debug(hw->os, "create rq[%2d] id %3d len %4d hdr size %4d ulp %d\n",
rq->instance, rq->hdr->id, rq->entry_count, rq->hdr_entry_size, rq->ulp);
/* Create the default data RQ */
ocs_hw_assert(hw->rq_count < ARRAY_SIZE(hw->rq));
rq->data = &hw->rq[hw->rq_count];
rq->data_entry_size = hw->config.rq_default_buffer_size;
if (sli_fc_rq_alloc(&hw->sli, rq->data,
rq->entry_count,
rq->data_entry_size,
cq->queue,
ulp, FALSE)) {
ocs_log_err(hw->os, "RQ allocation failure - first burst\n");
ocs_free(hw->os, rq, sizeof(*rq));
return NULL;
}
hw->hw_rq_lookup[hw->rq_count] = rq->instance; /* Update hw_rq_lookup[] */
hw->rq_count++;
ocs_log_debug(hw->os, "create rq[%2d] id %3d len %4d data size %4d ulp %d\n", rq->instance,
rq->data->id, rq->entry_count, rq->data_entry_size, rq->ulp);
hw->hw_rq[rq->instance] = rq;
ocs_list_add_tail(&cq->q_list, rq);
rq->rq_tracker = ocs_malloc(hw->os, sizeof(ocs_hw_sequence_t*) *
rq->entry_count, OCS_M_ZERO | OCS_M_NOWAIT);
if (rq->rq_tracker == NULL) {
ocs_log_err(hw->os, "RQ tracker buf allocation failure\n");
return NULL;
}
}
return rq;
}
/**
* @brief Allocate a hw_rq_t object SET
*
* Allocate an RQ object SET, where each element in set
* encapsulates 2 SLI queues (for rq pair)
*
* @param cqs pointers to be associated with RQs.
* @param rqs RQ pointers to be returned on success.
* @param num_rq_pairs number of rq pairs in the Set.
* @param entry_count number of entries in the RQs
* @param ulp ULP index for this RQ
*
* @return 0 in success and -1 on failure.
*/
uint32_t
hw_new_rq_set(hw_cq_t *cqs[], hw_rq_t *rqs[], uint32_t num_rq_pairs, uint32_t entry_count, uint32_t ulp)
{
ocs_hw_t *hw = cqs[0]->eq->hw;
hw_rq_t *rq = NULL;
sli4_queue_t *qs[SLI_MAX_RQ_SET_COUNT * 2] = { NULL };
uint32_t max_hw_rq, i, q_count;
ocs_hw_get(hw, OCS_HW_MAX_RQ_ENTRIES, &max_hw_rq);
/* Initialise RQS pointers */
for (i = 0; i < num_rq_pairs; i++) {
rqs[i] = NULL;
}
for (i = 0, q_count = 0; i < num_rq_pairs; i++, q_count += 2) {
rq = ocs_malloc(hw->os, sizeof(*rq), OCS_M_ZERO | OCS_M_NOWAIT);
if (rq == NULL)
goto error;
rqs[i] = rq;
rq->instance = hw->hw_rq_count++;
rq->cq = cqs[i];
rq->type = SLI_QTYPE_RQ;
rq->ulp = ulp;
rq->entry_count = OCS_MIN(entry_count, OCS_MIN(max_hw_rq, OCS_HW_RQ_NUM_HDR));
/* Header RQ */
rq->hdr = &hw->rq[hw->rq_count];
rq->hdr_entry_size = OCS_HW_RQ_HEADER_SIZE;
hw->hw_rq_lookup[hw->rq_count] = rq->instance;
hw->rq_count++;
qs[q_count] = rq->hdr;
/* Data RQ */
rq->data = &hw->rq[hw->rq_count];
rq->data_entry_size = hw->config.rq_default_buffer_size;
hw->hw_rq_lookup[hw->rq_count] = rq->instance;
hw->rq_count++;
qs[q_count + 1] = rq->data;
rq->rq_tracker = NULL;
}
if (sli_fc_rq_set_alloc(&hw->sli, num_rq_pairs, qs,
cqs[0]->queue->id,
rqs[0]->entry_count,
rqs[0]->hdr_entry_size,
rqs[0]->data_entry_size,
ulp)) {
ocs_log_err(hw->os, "RQ Set allocation failure for base CQ=%d\n", cqs[0]->queue->id);
goto error;
}
for (i = 0; i < num_rq_pairs; i++) {
hw->hw_rq[rqs[i]->instance] = rqs[i];
ocs_list_add_tail(&cqs[i]->q_list, rqs[i]);
rqs[i]->rq_tracker = ocs_malloc(hw->os, sizeof(ocs_hw_sequence_t*) *
rqs[i]->entry_count, OCS_M_ZERO | OCS_M_NOWAIT);
if (rqs[i]->rq_tracker == NULL) {
ocs_log_err(hw->os, "RQ tracker buf allocation failure\n");
goto error;
}
}
return 0;
error:
for (i = 0; i < num_rq_pairs; i++) {
if (rqs[i] != NULL) {
if (rqs[i]->rq_tracker != NULL) {
ocs_free(hw->os, rqs[i]->rq_tracker,
sizeof(ocs_hw_sequence_t*) *
rqs[i]->entry_count);
}
ocs_free(hw->os, rqs[i], sizeof(*rqs[i]));
}
}
return -1;
}
/**
* @brief Free an EQ object
*
* The EQ object and any child queue objects are freed
*
* @param eq pointer to EQ object
*
* @return none
*/
void
hw_del_eq(hw_eq_t *eq)
{
if (eq != NULL) {
hw_cq_t *cq;
hw_cq_t *cq_next;
ocs_list_foreach_safe(&eq->cq_list, cq, cq_next) {
hw_del_cq(cq);
}
ocs_varray_free(eq->wq_array);
ocs_list_remove(&eq->hw->eq_list, eq);
eq->hw->hw_eq[eq->instance] = NULL;
ocs_free(eq->hw->os, eq, sizeof(*eq));
}
}
/**
* @brief Free a CQ object
*
* The CQ object and any child queue objects are freed
*
* @param cq pointer to CQ object
*
* @return none
*/
void
hw_del_cq(hw_cq_t *cq)
{
if (cq != NULL) {
hw_q_t *q;
hw_q_t *q_next;
ocs_list_foreach_safe(&cq->q_list, q, q_next) {
switch(q->type) {
case SLI_QTYPE_MQ:
hw_del_mq((hw_mq_t*) q);
break;
case SLI_QTYPE_WQ:
hw_del_wq((hw_wq_t*) q);
break;
case SLI_QTYPE_RQ:
hw_del_rq((hw_rq_t*) q);
break;
default:
break;
}
}
ocs_list_remove(&cq->eq->cq_list, cq);
cq->eq->hw->hw_cq[cq->instance] = NULL;
ocs_free(cq->eq->hw->os, cq, sizeof(*cq));
}
}
/**
* @brief Free a MQ object
*
* The MQ object is freed
*
* @param mq pointer to MQ object
*
* @return none
*/
void
hw_del_mq(hw_mq_t *mq)
{
if (mq != NULL) {
ocs_list_remove(&mq->cq->q_list, mq);
mq->cq->eq->hw->hw_mq[mq->instance] = NULL;
ocs_free(mq->cq->eq->hw->os, mq, sizeof(*mq));
}
}
/**
* @brief Free a WQ object
*
* The WQ object is freed
*
* @param wq pointer to WQ object
*
* @return none
*/
void
hw_del_wq(hw_wq_t *wq)
{
if (wq != NULL) {
ocs_list_remove(&wq->cq->q_list, wq);
wq->cq->eq->hw->hw_wq[wq->instance] = NULL;
ocs_free(wq->cq->eq->hw->os, wq, sizeof(*wq));
}
}
/**
* @brief Free an RQ object
*
* The RQ object is freed
*
* @param rq pointer to RQ object
*
* @return none
*/
void
hw_del_rq(hw_rq_t *rq)
{
if (rq != NULL) {
ocs_hw_t *hw = rq->cq->eq->hw;
/* Free RQ tracker */
if (rq->rq_tracker != NULL) {
ocs_free(hw->os, rq->rq_tracker, sizeof(ocs_hw_sequence_t*) * rq->entry_count);
rq->rq_tracker = NULL;
}
ocs_list_remove(&rq->cq->q_list, rq);
hw->hw_rq[rq->instance] = NULL;
ocs_free(hw->os, rq, sizeof(*rq));
}
}
/**
* @brief Display HW queue objects
*
* The HW queue objects are displayed using ocs_log
*
* @param hw pointer to HW object
*
* @return none
*/
void
hw_queue_dump(ocs_hw_t *hw)
{
hw_eq_t *eq;
hw_cq_t *cq;
hw_q_t *q;
hw_mq_t *mq;
hw_wq_t *wq;
hw_rq_t *rq;
ocs_list_foreach(&hw->eq_list, eq) {
ocs_printf("eq[%d] id %2d\n", eq->instance, eq->queue->id);
ocs_list_foreach(&eq->cq_list, cq) {
ocs_printf(" cq[%d] id %2d current\n", cq->instance, cq->queue->id);
ocs_list_foreach(&cq->q_list, q) {
switch(q->type) {
case SLI_QTYPE_MQ:
mq = (hw_mq_t *) q;
ocs_printf(" mq[%d] id %2d\n", mq->instance, mq->queue->id);
break;
case SLI_QTYPE_WQ:
wq = (hw_wq_t *) q;
ocs_printf(" wq[%d] id %2d\n", wq->instance, wq->queue->id);
break;
case SLI_QTYPE_RQ:
rq = (hw_rq_t *) q;
ocs_printf(" rq[%d] hdr id %2d\n", rq->instance, rq->hdr->id);
break;
default:
break;
}
}
}
}
}
/**
* @brief Teardown HW queue objects
*
* The HW queue objects are freed
*
* @param hw pointer to HW object
*
* @return none
*/
void
hw_queue_teardown(ocs_hw_t *hw)
{
uint32_t i;
hw_eq_t *eq;
hw_eq_t *eq_next;
if (ocs_list_valid(&hw->eq_list)) {
ocs_list_foreach_safe(&hw->eq_list, eq, eq_next) {
hw_del_eq(eq);
}
}
for (i = 0; i < ARRAY_SIZE(hw->wq_cpu_array); i++) {
ocs_varray_free(hw->wq_cpu_array[i]);
hw->wq_cpu_array[i] = NULL;
}
for (i = 0; i < ARRAY_SIZE(hw->wq_class_array); i++) {
ocs_varray_free(hw->wq_class_array[i]);
hw->wq_class_array[i] = NULL;
}
}
/**
* @brief Allocate a WQ to an IO object
*
* The next work queue index is used to assign a WQ to an IO.
*
* If wq_steering is OCS_HW_WQ_STEERING_CLASS, a WQ from io->wq_class is
* selected.
*
* If wq_steering is OCS_HW_WQ_STEERING_REQUEST, then a WQ from the EQ that
* the IO request came in on is selected.
*
* If wq_steering is OCS_HW_WQ_STEERING_CPU, then a WQ associted with the
* CPU the request is made on is selected.
*
* @param hw pointer to HW object
* @param io pointer to IO object
*
* @return Return pointer to next WQ
*/
hw_wq_t *
ocs_hw_queue_next_wq(ocs_hw_t *hw, ocs_hw_io_t *io)
{
hw_eq_t *eq;
hw_wq_t *wq = NULL;
switch(io->wq_steering) {
case OCS_HW_WQ_STEERING_CLASS:
if (likely(io->wq_class < ARRAY_SIZE(hw->wq_class_array))) {
wq = ocs_varray_iter_next(hw->wq_class_array[io->wq_class]);
}
break;
case OCS_HW_WQ_STEERING_REQUEST:
eq = io->eq;
if (likely(eq != NULL)) {
wq = ocs_varray_iter_next(eq->wq_array);
}
break;
case OCS_HW_WQ_STEERING_CPU: {
uint32_t cpuidx = ocs_thread_getcpu();
if (likely(cpuidx < ARRAY_SIZE(hw->wq_cpu_array))) {
wq = ocs_varray_iter_next(hw->wq_cpu_array[cpuidx]);
}
break;
}
}
if (unlikely(wq == NULL)) {
wq = hw->hw_wq[0];
}
return wq;
}
/**
* @brief Return count of EQs for a queue topology object
*
* The EQ count for in the HWs queue topology (hw->qtop) object is returned
*
* @param hw pointer to HW object
*
* @return count of EQs
*/
uint32_t
ocs_hw_qtop_eq_count(ocs_hw_t *hw)
{
return hw->qtop->entry_counts[QTOP_EQ];
}
#define TOKEN_LEN 32
/**
* @brief return string given a QTOP entry
*
* @param entry QTOP entry
*
* @return returns string or "unknown"
*/
#if HW_QTOP_DEBUG
static char *
qtopentry2s(ocs_hw_qtop_entry_e entry) {
switch(entry) {
#define P(x) case x: return #x;
P(QTOP_EQ)
P(QTOP_CQ)
P(QTOP_WQ)
P(QTOP_RQ)
P(QTOP_MQ)
P(QTOP_THREAD_START)
P(QTOP_THREAD_END)
P(QTOP_LAST)
#undef P
}
return "unknown";
}
#endif
/**
* @brief Declare token types
*/
typedef enum {
TOK_LPAREN = 1,
TOK_RPAREN,
TOK_COLON,
TOK_EQUALS,
TOK_QUEUE,
TOK_ATTR_NAME,
TOK_NUMBER,
TOK_NUMBER_VALUE,
TOK_NUMBER_LIST,
} tok_type_e;
/**
* @brief Declare token sub-types
*/
typedef enum {
TOK_SUB_EQ = 100,
TOK_SUB_CQ,
TOK_SUB_RQ,
TOK_SUB_MQ,
TOK_SUB_WQ,
TOK_SUB_LEN,
TOK_SUB_CLASS,
TOK_SUB_ULP,
TOK_SUB_FILTER,
} tok_subtype_e;
/**
* @brief convert queue subtype to QTOP entry
*
* @param q queue subtype
*
* @return QTOP entry or 0
*/
static ocs_hw_qtop_entry_e
subtype2qtop(tok_subtype_e q)
{
switch(q) {
case TOK_SUB_EQ: return QTOP_EQ;
case TOK_SUB_CQ: return QTOP_CQ;
case TOK_SUB_RQ: return QTOP_RQ;
case TOK_SUB_MQ: return QTOP_MQ;
case TOK_SUB_WQ: return QTOP_WQ;
default:
break;
}
return 0;
}
/**
* @brief Declare token object
*/
typedef struct {
tok_type_e type;
tok_subtype_e subtype;
char string[TOKEN_LEN];
} tok_t;
/**
* @brief Declare token array object
*/
typedef struct {
tok_t *tokens; /* Pointer to array of tokens */
uint32_t alloc_count; /* Number of tokens in the array */
uint32_t inuse_count; /* Number of tokens posted to array */
uint32_t iter_idx; /* Iterator index */
} tokarray_t;
/**
* @brief Declare token match structure
*/
typedef struct {
char *s;
tok_type_e type;
tok_subtype_e subtype;
} tokmatch_t;
/**
* @brief test if character is ID start character
*
* @param c character to test
*
* @return TRUE if character is an ID start character
*/
static int32_t
idstart(int c)
{
return isalpha(c) || (c == '_') || (c == '$');
}
/**
* @brief test if character is an ID character
*
* @param c character to test
*
* @return TRUE if character is an ID character
*/
static int32_t
idchar(int c)
{
return idstart(c) || ocs_isdigit(c);
}
/**
* @brief Declare single character matches
*/
static tokmatch_t cmatches[] = {
{"(", TOK_LPAREN},
{")", TOK_RPAREN},
{":", TOK_COLON},
{"=", TOK_EQUALS},
};
/**
* @brief Declare identifier match strings
*/
static tokmatch_t smatches[] = {
{"eq", TOK_QUEUE, TOK_SUB_EQ},
{"cq", TOK_QUEUE, TOK_SUB_CQ},
{"rq", TOK_QUEUE, TOK_SUB_RQ},
{"mq", TOK_QUEUE, TOK_SUB_MQ},
{"wq", TOK_QUEUE, TOK_SUB_WQ},
{"len", TOK_ATTR_NAME, TOK_SUB_LEN},
{"class", TOK_ATTR_NAME, TOK_SUB_CLASS},
{"ulp", TOK_ATTR_NAME, TOK_SUB_ULP},
{"filter", TOK_ATTR_NAME, TOK_SUB_FILTER},
};
/**
* @brief Scan string and return next token
*
* The string is scanned and the next token is returned
*
* @param s input string to scan
* @param tok pointer to place scanned token
*
* @return pointer to input string following scanned token, or NULL
*/
static const char *
tokenize(const char *s, tok_t *tok)
{
uint32_t i;
memset(tok, 0, sizeof(*tok));
/* Skip over whitespace */
while (*s && ocs_isspace(*s)) {
s++;
}
/* Return if nothing left in this string */
if (*s == 0) {
return NULL;
}
/* Look for single character matches */
for (i = 0; i < ARRAY_SIZE(cmatches); i++) {
if (cmatches[i].s[0] == *s) {
tok->type = cmatches[i].type;
tok->subtype = cmatches[i].subtype;
tok->string[0] = *s++;
return s;
}
}
/* Scan for a hex number or decimal */
if ((s[0] == '0') && ((s[1] == 'x') || (s[1] == 'X'))) {
char *p = tok->string;
tok->type = TOK_NUMBER;
*p++ = *s++;
*p++ = *s++;
while ((*s == '.') || ocs_isxdigit(*s)) {
if ((p - tok->string) < (int32_t)sizeof(tok->string)) {
*p++ = *s;
}
if (*s == ',') {
tok->type = TOK_NUMBER_LIST;
}
s++;
}
*p = 0;
return s;
} else if (ocs_isdigit(*s)) {
char *p = tok->string;
tok->type = TOK_NUMBER;
while ((*s == ',') || ocs_isdigit(*s)) {
if ((p - tok->string) < (int32_t)sizeof(tok->string)) {
*p++ = *s;
}
if (*s == ',') {
tok->type = TOK_NUMBER_LIST;
}
s++;
}
*p = 0;
return s;
}
/* Scan for an ID */
if (idstart(*s)) {
char *p = tok->string;
for (*p++ = *s++; idchar(*s); s++) {
if ((p - tok->string) < TOKEN_LEN) {
*p++ = *s;
}
}
/* See if this is a $ number value */
if (tok->string[0] == '$') {
tok->type = TOK_NUMBER_VALUE;
} else {
/* Look for a string match */
for (i = 0; i < ARRAY_SIZE(smatches); i++) {
if (strcmp(smatches[i].s, tok->string) == 0) {
tok->type = smatches[i].type;
tok->subtype = smatches[i].subtype;
return s;
}
}
}
}
return s;
}
/**
* @brief convert token type to string
*
* @param type token type
*
* @return string, or "unknown"
*/
static const char *
token_type2s(tok_type_e type)
{
switch(type) {
#define P(x) case x: return #x;
P(TOK_LPAREN)
P(TOK_RPAREN)
P(TOK_COLON)
P(TOK_EQUALS)
P(TOK_QUEUE)
P(TOK_ATTR_NAME)
P(TOK_NUMBER)
P(TOK_NUMBER_VALUE)
P(TOK_NUMBER_LIST)
#undef P
}
return "unknown";
}
/**
* @brief convert token sub-type to string
*
* @param subtype token sub-type
*
* @return string, or "unknown"
*/
static const char *
token_subtype2s(tok_subtype_e subtype)
{
switch(subtype) {
#define P(x) case x: return #x;
P(TOK_SUB_EQ)
P(TOK_SUB_CQ)
P(TOK_SUB_RQ)
P(TOK_SUB_MQ)
P(TOK_SUB_WQ)
P(TOK_SUB_LEN)
P(TOK_SUB_CLASS)
P(TOK_SUB_ULP)
P(TOK_SUB_FILTER)
#undef P
}
return "";
}
/**
* @brief Generate syntax error message
*
* A syntax error message is found, the input tokens are dumped up to and including
* the token that failed as indicated by the current iterator index.
*
* @param hw pointer to HW object
* @param tokarray pointer to token array object
*
* @return none
*/
static void
tok_syntax(ocs_hw_t *hw, tokarray_t *tokarray)
{
uint32_t i;
tok_t *tok;
ocs_log_test(hw->os, "Syntax error:\n");
for (i = 0, tok = tokarray->tokens; (i <= tokarray->inuse_count); i++, tok++) {
ocs_log_test(hw->os, "%s [%2d] %-16s %-16s %s\n", (i == tokarray->iter_idx) ? ">>>" : " ", i,
token_type2s(tok->type), token_subtype2s(tok->subtype), tok->string);
}
}
/**
* @brief parse a number
*
* Parses tokens of type TOK_NUMBER and TOK_NUMBER_VALUE, returning a numeric value
*
* @param hw pointer to HW object
* @param qtop pointer to QTOP object
* @param tok pointer to token to parse
*
* @return numeric value
*/
static uint32_t
tok_getnumber(ocs_hw_t *hw, ocs_hw_qtop_t *qtop, tok_t *tok)
{
uint32_t rval = 0;
uint32_t num_cpus = ocs_get_num_cpus();
switch(tok->type) {
case TOK_NUMBER_VALUE:
if (ocs_strcmp(tok->string, "$ncpu") == 0) {
rval = num_cpus;
} else if (ocs_strcmp(tok->string, "$ncpu1") == 0) {
rval = num_cpus - 1;
} else if (ocs_strcmp(tok->string, "$nwq") == 0) {
if (hw != NULL) {
rval = hw->config.n_wq;
}
} else if (ocs_strcmp(tok->string, "$maxmrq") == 0) {
rval = MIN(num_cpus, OCS_HW_MAX_MRQS);
} else if (ocs_strcmp(tok->string, "$nulp") == 0) {
rval = hw->ulp_max - hw->ulp_start + 1;
} else if ((qtop->rptcount_idx > 0) && ocs_strcmp(tok->string, "$rpt0") == 0) {
rval = qtop->rptcount[qtop->rptcount_idx-1];
} else if ((qtop->rptcount_idx > 1) && ocs_strcmp(tok->string, "$rpt1") == 0) {
rval = qtop->rptcount[qtop->rptcount_idx-2];
} else if ((qtop->rptcount_idx > 2) && ocs_strcmp(tok->string, "$rpt2") == 0) {
rval = qtop->rptcount[qtop->rptcount_idx-3];
} else if ((qtop->rptcount_idx > 3) && ocs_strcmp(tok->string, "$rpt3") == 0) {
rval = qtop->rptcount[qtop->rptcount_idx-4];
} else {
rval = ocs_strtoul(tok->string, 0, 0);
}
break;
case TOK_NUMBER:
rval = ocs_strtoul(tok->string, 0, 0);
break;
default:
break;
}
return rval;
}
/**
* @brief parse an array of tokens
*
* The tokens are semantically parsed, to generate QTOP entries.
*
* @param hw pointer to HW object
* @param tokarray array array of tokens
* @param qtop ouptut QTOP object
*
* @return returns 0 for success, a negative error code value for failure.
*/
static int32_t
parse_topology(ocs_hw_t *hw, tokarray_t *tokarray, ocs_hw_qtop_t *qtop)
{
ocs_hw_qtop_entry_t *qt = qtop->entries + qtop->inuse_count;
tok_t *tok;
for (; (tokarray->iter_idx < tokarray->inuse_count) &&
((tok = &tokarray->tokens[tokarray->iter_idx]) != NULL); ) {
if (qtop->inuse_count >= qtop->alloc_count) {
return -1;
}
qt = qtop->entries + qtop->inuse_count;
switch (tok[0].type)
{
case TOK_QUEUE:
qt->entry = subtype2qtop(tok[0].subtype);
qt->set_default = FALSE;
qt->len = 0;
qt->class = 0;
qtop->inuse_count++;
tokarray->iter_idx++; /* Advance current token index */
/* Parse for queue attributes, possibly multiple instances */
while ((tokarray->iter_idx + 4) <= tokarray->inuse_count) {
tok = &tokarray->tokens[tokarray->iter_idx];
if( (tok[0].type == TOK_COLON) &&
(tok[1].type == TOK_ATTR_NAME) &&
(tok[2].type == TOK_EQUALS) &&
((tok[3].type == TOK_NUMBER) ||
(tok[3].type == TOK_NUMBER_VALUE) ||
(tok[3].type == TOK_NUMBER_LIST))) {
switch (tok[1].subtype) {
case TOK_SUB_LEN:
qt->len = tok_getnumber(hw, qtop, &tok[3]);
break;
case TOK_SUB_CLASS:
qt->class = tok_getnumber(hw, qtop, &tok[3]);
break;
case TOK_SUB_ULP:
qt->ulp = tok_getnumber(hw, qtop, &tok[3]);
break;
case TOK_SUB_FILTER:
if (tok[3].type == TOK_NUMBER_LIST) {
uint32_t mask = 0;
char *p = tok[3].string;
while ((p != NULL) && *p) {
uint32_t v;
v = ocs_strtoul(p, 0, 0);
if (v < 32) {
mask |= (1U << v);
}
p = ocs_strchr(p, ',');
if (p != NULL) {
p++;
}
}
qt->filter_mask = mask;
} else {
qt->filter_mask = (1U << tok_getnumber(hw, qtop, &tok[3]));
}
break;
default:
break;
}
/* Advance current token index */
tokarray->iter_idx += 4;
} else {
break;
}
}
qtop->entry_counts[qt->entry]++;
break;
case TOK_ATTR_NAME:
if ( ((tokarray->iter_idx + 5) <= tokarray->inuse_count) &&
(tok[1].type == TOK_COLON) &&
(tok[2].type == TOK_QUEUE) &&
(tok[3].type == TOK_EQUALS) &&
((tok[4].type == TOK_NUMBER) || (tok[4].type == TOK_NUMBER_VALUE))) {
qt->entry = subtype2qtop(tok[2].subtype);
qt->set_default = TRUE;
switch(tok[0].subtype) {
case TOK_SUB_LEN:
qt->len = tok_getnumber(hw, qtop, &tok[4]);
break;
case TOK_SUB_CLASS:
qt->class = tok_getnumber(hw, qtop, &tok[4]);
break;
case TOK_SUB_ULP:
qt->ulp = tok_getnumber(hw, qtop, &tok[4]);
break;
default:
break;
}
qtop->inuse_count++;
tokarray->iter_idx += 5;
} else {
tok_syntax(hw, tokarray);
return -1;
}
break;
case TOK_NUMBER:
case TOK_NUMBER_VALUE: {
uint32_t rpt_count = 1;
uint32_t i;
rpt_count = tok_getnumber(hw, qtop, tok);
if (tok[1].type == TOK_LPAREN) {
uint32_t iter_idx_save;
tokarray->iter_idx += 2;
/* save token array iteration index */
iter_idx_save = tokarray->iter_idx;
for (i = 0; i < rpt_count; i++) {
uint32_t rptcount_idx = qtop->rptcount_idx;
if (qtop->rptcount_idx < ARRAY_SIZE(qtop->rptcount)) {
qtop->rptcount[qtop->rptcount_idx++] = i;
}
/* restore token array iteration index */
tokarray->iter_idx = iter_idx_save;
/* parse, append to qtop */
parse_topology(hw, tokarray, qtop);
qtop->rptcount_idx = rptcount_idx;
}
}
break;
}
case TOK_RPAREN:
tokarray->iter_idx++;
return 0;
default:
tok_syntax(hw, tokarray);
return -1;
}
}
return 0;
}
/**
* @brief Parse queue topology string
*
* The queue topology object is allocated, and filled with the results of parsing the
* passed in queue topology string
*
* @param hw pointer to HW object
* @param qtop_string input queue topology string
*
* @return pointer to allocated QTOP object, or NULL if there was an error
*/
ocs_hw_qtop_t *
ocs_hw_qtop_parse(ocs_hw_t *hw, const char *qtop_string)
{
ocs_hw_qtop_t *qtop;
tokarray_t tokarray;
const char *s;
#if HW_QTOP_DEBUG
uint32_t i;
ocs_hw_qtop_entry_t *qt;
#endif
ocs_log_debug(hw->os, "queue topology: %s\n", qtop_string);
/* Allocate a token array */
tokarray.tokens = ocs_malloc(hw->os, MAX_TOKENS * sizeof(*tokarray.tokens), OCS_M_ZERO | OCS_M_NOWAIT);
if (tokarray.tokens == NULL) {
return NULL;
}
tokarray.alloc_count = MAX_TOKENS;
tokarray.inuse_count = 0;
tokarray.iter_idx = 0;
/* Parse the tokens */
for (s = qtop_string; (tokarray.inuse_count < tokarray.alloc_count) &&
((s = tokenize(s, &tokarray.tokens[tokarray.inuse_count]))) != NULL; ) {
tokarray.inuse_count++;;
}
/* Allocate a queue topology structure */
qtop = ocs_malloc(hw->os, sizeof(*qtop), OCS_M_ZERO | OCS_M_NOWAIT);
if (qtop == NULL) {
ocs_free(hw->os, tokarray.tokens, MAX_TOKENS * sizeof(*tokarray.tokens));
ocs_log_err(hw->os, "malloc qtop failed\n");
return NULL;
}
qtop->os = hw->os;
/* Allocate queue topology entries */
qtop->entries = ocs_malloc(hw->os, OCS_HW_MAX_QTOP_ENTRIES*sizeof(*qtop->entries), OCS_M_ZERO | OCS_M_NOWAIT);
if (qtop->entries == NULL) {
ocs_log_err(hw->os, "malloc qtop entries failed\n");
ocs_free(hw->os, qtop, sizeof(*qtop));
ocs_free(hw->os, tokarray.tokens, MAX_TOKENS * sizeof(*tokarray.tokens));
return NULL;
}
qtop->alloc_count = OCS_HW_MAX_QTOP_ENTRIES;
qtop->inuse_count = 0;
/* Parse the tokens */
parse_topology(hw, &tokarray, qtop);
#if HW_QTOP_DEBUG
for (i = 0, qt = qtop->entries; i < qtop->inuse_count; i++, qt++) {
ocs_log_debug(hw->os, "entry %s set_df %d len %4d class %d ulp %d\n", qtopentry2s(qt->entry), qt->set_default, qt->len,
qt->class, qt->ulp);
}
#endif
/* Free the tokens array */
ocs_free(hw->os, tokarray.tokens, MAX_TOKENS * sizeof(*tokarray.tokens));
return qtop;
}
/**
* @brief free queue topology object
*
* @param qtop pointer to QTOP object
*
* @return none
*/
void
ocs_hw_qtop_free(ocs_hw_qtop_t *qtop)
{
if (qtop != NULL) {
if (qtop->entries != NULL) {
ocs_free(qtop->os, qtop->entries, qtop->alloc_count*sizeof(*qtop->entries));
}
ocs_free(qtop->os, qtop, sizeof(*qtop));
}
}
/* Uncomment this to turn on RQ debug */
// #define ENABLE_DEBUG_RQBUF
static int32_t ocs_hw_rqpair_find(ocs_hw_t *hw, uint16_t rq_id);
static ocs_hw_sequence_t * ocs_hw_rqpair_get(ocs_hw_t *hw, uint16_t rqindex, uint16_t bufindex);
static int32_t ocs_hw_rqpair_put(ocs_hw_t *hw, ocs_hw_sequence_t *seq);
static ocs_hw_rtn_e ocs_hw_rqpair_auto_xfer_rdy_buffer_sequence_reset(ocs_hw_t *hw, ocs_hw_sequence_t *seq);
/**
* @brief Process receive queue completions for RQ Pair mode.
*
* @par Description
* RQ completions are processed. In RQ pair mode, a single header and single payload
* buffer are received, and passed to the function that has registered for unsolicited
* callbacks.
*
* @param hw Hardware context.
* @param cq Pointer to HW completion queue.
* @param cqe Completion queue entry.
*
* @return Returns 0 for success, or a negative error code value for failure.
*/
int32_t
ocs_hw_rqpair_process_rq(ocs_hw_t *hw, hw_cq_t *cq, uint8_t *cqe)
{
uint16_t rq_id;
uint32_t index;
int32_t rqindex;
int32_t rq_status;
uint32_t h_len;
uint32_t p_len;
ocs_hw_sequence_t *seq;
rq_status = sli_fc_rqe_rqid_and_index(&hw->sli, cqe, &rq_id, &index);
if (0 != rq_status) {
switch (rq_status) {
case SLI4_FC_ASYNC_RQ_BUF_LEN_EXCEEDED:
case SLI4_FC_ASYNC_RQ_DMA_FAILURE:
/* just get RQ buffer then return to chip */
rqindex = ocs_hw_rqpair_find(hw, rq_id);
if (rqindex < 0) {
ocs_log_test(hw->os, "status=%#x: rq_id lookup failed for id=%#x\n",
rq_status, rq_id);
break;
}
/* get RQ buffer */
seq = ocs_hw_rqpair_get(hw, rqindex, index);
/* return to chip */
if (ocs_hw_rqpair_sequence_free(hw, seq)) {
ocs_log_test(hw->os, "status=%#x, failed to return buffers to RQ\n",
rq_status);
break;
}
break;
case SLI4_FC_ASYNC_RQ_INSUFF_BUF_NEEDED:
case SLI4_FC_ASYNC_RQ_INSUFF_BUF_FRM_DISC:
/* since RQ buffers were not consumed, cannot return them to chip */
/* fall through */
ocs_log_debug(hw->os, "Warning: RCQE status=%#x, \n", rq_status);
default:
break;
}
return -1;
}
rqindex = ocs_hw_rqpair_find(hw, rq_id);
if (rqindex < 0) {
ocs_log_test(hw->os, "Error: rq_id lookup failed for id=%#x\n", rq_id);
return -1;
}
OCS_STAT({ hw_rq_t *rq = hw->hw_rq[hw->hw_rq_lookup[rqindex]]; rq->use_count++; rq->hdr_use_count++;
rq->payload_use_count++;})
seq = ocs_hw_rqpair_get(hw, rqindex, index);
ocs_hw_assert(seq != NULL);
seq->hw = hw;
seq->auto_xrdy = 0;
seq->out_of_xris = 0;
seq->xri = 0;
seq->hio = NULL;
sli_fc_rqe_length(&hw->sli, cqe, &h_len, &p_len);
seq->header->dma.len = h_len;
seq->payload->dma.len = p_len;
seq->fcfi = sli_fc_rqe_fcfi(&hw->sli, cqe);
seq->hw_priv = cq->eq;
/* bounce enabled, single RQ, we snoop the ox_id to choose the cpuidx */
if (hw->config.bounce) {
fc_header_t *hdr = seq->header->dma.virt;
uint32_t s_id = fc_be24toh(hdr->s_id);
uint32_t d_id = fc_be24toh(hdr->d_id);
uint32_t ox_id = ocs_be16toh(hdr->ox_id);
if (hw->callback.bounce != NULL) {
(*hw->callback.bounce)(ocs_hw_unsol_process_bounce, seq, s_id, d_id, ox_id);
}
} else {
hw->callback.unsolicited(hw->args.unsolicited, seq);
}
return 0;
}
/**
* @brief Process receive queue completions for RQ Pair mode - Auto xfer rdy
*
* @par Description
* RQ completions are processed. In RQ pair mode, a single header and single payload
* buffer are received, and passed to the function that has registered for unsolicited
* callbacks.
*
* @param hw Hardware context.
* @param cq Pointer to HW completion queue.
* @param cqe Completion queue entry.
*
* @return Returns 0 for success, or a negative error code value for failure.
*/
int32_t
ocs_hw_rqpair_process_auto_xfr_rdy_cmd(ocs_hw_t *hw, hw_cq_t *cq, uint8_t *cqe)
{
/* Seems silly to call a SLI function to decode - use the structure directly for performance */
sli4_fc_optimized_write_cmd_cqe_t *opt_wr = (sli4_fc_optimized_write_cmd_cqe_t*)cqe;
uint16_t rq_id;
uint32_t index;
int32_t rqindex;
int32_t rq_status;
uint32_t h_len;
uint32_t p_len;
ocs_hw_sequence_t *seq;
uint8_t axr_lock_taken = 0;
#if defined(OCS_DISC_SPIN_DELAY)
uint32_t delay = 0;
char prop_buf[32];
#endif
rq_status = sli_fc_rqe_rqid_and_index(&hw->sli, cqe, &rq_id, &index);
if (0 != rq_status) {
switch (rq_status) {
case SLI4_FC_ASYNC_RQ_BUF_LEN_EXCEEDED:
case SLI4_FC_ASYNC_RQ_DMA_FAILURE:
/* just get RQ buffer then return to chip */
rqindex = ocs_hw_rqpair_find(hw, rq_id);
if (rqindex < 0) {
ocs_log_err(hw->os, "status=%#x: rq_id lookup failed for id=%#x\n",
rq_status, rq_id);
break;
}
/* get RQ buffer */
seq = ocs_hw_rqpair_get(hw, rqindex, index);
/* return to chip */
if (ocs_hw_rqpair_sequence_free(hw, seq)) {
ocs_log_err(hw->os, "status=%#x, failed to return buffers to RQ\n",
rq_status);
break;
}
break;
case SLI4_FC_ASYNC_RQ_INSUFF_BUF_NEEDED:
case SLI4_FC_ASYNC_RQ_INSUFF_BUF_FRM_DISC:
/* since RQ buffers were not consumed, cannot return them to chip */
ocs_log_debug(hw->os, "Warning: RCQE status=%#x, \n", rq_status);
/* fall through */
default:
break;
}
return -1;
}
rqindex = ocs_hw_rqpair_find(hw, rq_id);
if (rqindex < 0) {
ocs_log_err(hw->os, "Error: rq_id lookup failed for id=%#x\n", rq_id);
return -1;
}
OCS_STAT({ hw_rq_t *rq = hw->hw_rq[hw->hw_rq_lookup[rqindex]]; rq->use_count++; rq->hdr_use_count++;
rq->payload_use_count++;})
seq = ocs_hw_rqpair_get(hw, rqindex, index);
ocs_hw_assert(seq != NULL);
seq->hw = hw;
seq->auto_xrdy = opt_wr->agxr;
seq->out_of_xris = opt_wr->oox;
seq->xri = opt_wr->xri;
seq->hio = NULL;
sli_fc_rqe_length(&hw->sli, cqe, &h_len, &p_len);
seq->header->dma.len = h_len;
seq->payload->dma.len = p_len;
seq->fcfi = sli_fc_rqe_fcfi(&hw->sli, cqe);
seq->hw_priv = cq->eq;
if (seq->auto_xrdy) {
fc_header_t *fc_hdr = seq->header->dma.virt;
seq->hio = ocs_hw_io_lookup(hw, seq->xri);
ocs_lock(&seq->hio->axr_lock);
axr_lock_taken = 1;
/* save the FCFI, src_id, dest_id and ox_id because we need it for the sequence object when the data comes. */
seq->hio->axr_buf->fcfi = seq->fcfi;
seq->hio->axr_buf->hdr.ox_id = fc_hdr->ox_id;
seq->hio->axr_buf->hdr.s_id = fc_hdr->s_id;
seq->hio->axr_buf->hdr.d_id = fc_hdr->d_id;
seq->hio->axr_buf->cmd_cqe = 1;
/*
* Since auto xfer rdy is used for this IO, then clear the sequence
* initiative bit in the header so that the upper layers wait for the
* data. This should flow exactly like the first burst case.
*/
fc_hdr->f_ctl &= fc_htobe24(~FC_FCTL_SEQUENCE_INITIATIVE);
/* If AXR CMD CQE came before previous TRSP CQE of same XRI */
if (seq->hio->type == OCS_HW_IO_TARGET_RSP) {
seq->hio->axr_buf->call_axr_cmd = 1;
seq->hio->axr_buf->cmd_seq = seq;
goto exit_ocs_hw_rqpair_process_auto_xfr_rdy_cmd;
}
}
/* bounce enabled, single RQ, we snoop the ox_id to choose the cpuidx */
if (hw->config.bounce) {
fc_header_t *hdr = seq->header->dma.virt;
uint32_t s_id = fc_be24toh(hdr->s_id);
uint32_t d_id = fc_be24toh(hdr->d_id);
uint32_t ox_id = ocs_be16toh(hdr->ox_id);
if (hw->callback.bounce != NULL) {
(*hw->callback.bounce)(ocs_hw_unsol_process_bounce, seq, s_id, d_id, ox_id);
}
} else {
hw->callback.unsolicited(hw->args.unsolicited, seq);
}
if (seq->auto_xrdy) {
/* If data cqe came before cmd cqe in out of order in case of AXR */
if(seq->hio->axr_buf->data_cqe == 1) {
#if defined(OCS_DISC_SPIN_DELAY)
if (ocs_get_property("disk_spin_delay", prop_buf, sizeof(prop_buf)) == 0) {
delay = ocs_strtoul(prop_buf, 0, 0);
ocs_udelay(delay);
}
#endif
/* bounce enabled, single RQ, we snoop the ox_id to choose the cpuidx */
if (hw->config.bounce) {
fc_header_t *hdr = seq->header->dma.virt;
uint32_t s_id = fc_be24toh(hdr->s_id);
uint32_t d_id = fc_be24toh(hdr->d_id);
uint32_t ox_id = ocs_be16toh(hdr->ox_id);
if (hw->callback.bounce != NULL) {
(*hw->callback.bounce)(ocs_hw_unsol_process_bounce, &seq->hio->axr_buf->seq, s_id, d_id, ox_id);
}
} else {
hw->callback.unsolicited(hw->args.unsolicited, &seq->hio->axr_buf->seq);
}
}
}
exit_ocs_hw_rqpair_process_auto_xfr_rdy_cmd:
if(axr_lock_taken) {
ocs_unlock(&seq->hio->axr_lock);
}
return 0;
}
/**
* @brief Process CQ completions for Auto xfer rdy data phases.
*
* @par Description
* The data is DMA'd into the data buffer posted to the SGL prior to the XRI
* being assigned to an IO. When the completion is received, All of the data
* is in the single buffer.
*
* @param hw Hardware context.
* @param cq Pointer to HW completion queue.
* @param cqe Completion queue entry.
*
* @return Returns 0 for success, or a negative error code value for failure.
*/
int32_t
ocs_hw_rqpair_process_auto_xfr_rdy_data(ocs_hw_t *hw, hw_cq_t *cq, uint8_t *cqe)
{
/* Seems silly to call a SLI function to decode - use the structure directly for performance */
sli4_fc_optimized_write_data_cqe_t *opt_wr = (sli4_fc_optimized_write_data_cqe_t*)cqe;
ocs_hw_sequence_t *seq;
ocs_hw_io_t *io;
ocs_hw_auto_xfer_rdy_buffer_t *buf;
#if defined(OCS_DISC_SPIN_DELAY)
uint32_t delay = 0;
char prop_buf[32];
#endif
/* Look up the IO */
io = ocs_hw_io_lookup(hw, opt_wr->xri);
ocs_lock(&io->axr_lock);
buf = io->axr_buf;
buf->data_cqe = 1;
seq = &buf->seq;
seq->hw = hw;
seq->auto_xrdy = 1;
seq->out_of_xris = 0;
seq->xri = opt_wr->xri;
seq->hio = io;
seq->header = &buf->header;
seq->payload = &buf->payload;
seq->header->dma.len = sizeof(fc_header_t);
seq->payload->dma.len = opt_wr->total_data_placed;
seq->fcfi = buf->fcfi;
seq->hw_priv = cq->eq;
if (opt_wr->status == SLI4_FC_WCQE_STATUS_SUCCESS) {
seq->status = OCS_HW_UNSOL_SUCCESS;
} else if (opt_wr->status == SLI4_FC_WCQE_STATUS_REMOTE_STOP) {
seq->status = OCS_HW_UNSOL_ABTS_RCVD;
} else {
seq->status = OCS_HW_UNSOL_ERROR;
}
/* If AXR CMD CQE came before previous TRSP CQE of same XRI */
if(io->type == OCS_HW_IO_TARGET_RSP) {
io->axr_buf->call_axr_data = 1;
goto exit_ocs_hw_rqpair_process_auto_xfr_rdy_data;
}
if(!buf->cmd_cqe) {
/* if data cqe came before cmd cqe, return here, cmd cqe will handle */
goto exit_ocs_hw_rqpair_process_auto_xfr_rdy_data;
}
#if defined(OCS_DISC_SPIN_DELAY)
if (ocs_get_property("disk_spin_delay", prop_buf, sizeof(prop_buf)) == 0) {
delay = ocs_strtoul(prop_buf, 0, 0);
ocs_udelay(delay);
}
#endif
/* bounce enabled, single RQ, we snoop the ox_id to choose the cpuidx */
if (hw->config.bounce) {
fc_header_t *hdr = seq->header->dma.virt;
uint32_t s_id = fc_be24toh(hdr->s_id);
uint32_t d_id = fc_be24toh(hdr->d_id);
uint32_t ox_id = ocs_be16toh(hdr->ox_id);
if (hw->callback.bounce != NULL) {
(*hw->callback.bounce)(ocs_hw_unsol_process_bounce, seq, s_id, d_id, ox_id);
}
} else {
hw->callback.unsolicited(hw->args.unsolicited, seq);
}
exit_ocs_hw_rqpair_process_auto_xfr_rdy_data:
ocs_unlock(&io->axr_lock);
return 0;
}
/**
* @brief Return pointer to RQ buffer entry.
*
* @par Description
* Returns a pointer to the RQ buffer entry given by @c rqindex and @c bufindex.
*
* @param hw Hardware context.
* @param rqindex Index of the RQ that is being processed.
* @param bufindex Index into the RQ that is being processed.
*
* @return Pointer to the sequence structure, or NULL otherwise.
*/
static ocs_hw_sequence_t *
ocs_hw_rqpair_get(ocs_hw_t *hw, uint16_t rqindex, uint16_t bufindex)
{
sli4_queue_t *rq_hdr = &hw->rq[rqindex];
sli4_queue_t *rq_payload = &hw->rq[rqindex+1];
ocs_hw_sequence_t *seq = NULL;
hw_rq_t *rq = hw->hw_rq[hw->hw_rq_lookup[rqindex]];
#if defined(ENABLE_DEBUG_RQBUF)
uint64_t rqbuf_debug_value = 0xdead0000 | ((rq->id & 0xf) << 12) | (bufindex & 0xfff);
#endif
if (bufindex >= rq_hdr->length) {
ocs_log_err(hw->os, "RQ index %d bufindex %d exceed ring length %d for id %d\n",
rqindex, bufindex, rq_hdr->length, rq_hdr->id);
return NULL;
}
sli_queue_lock(rq_hdr);
sli_queue_lock(rq_payload);
#if defined(ENABLE_DEBUG_RQBUF)
/* Put a debug value into the rq, to track which entries are still valid */
_sli_queue_poke(&hw->sli, rq_hdr, bufindex, (uint8_t *)&rqbuf_debug_value);
_sli_queue_poke(&hw->sli, rq_payload, bufindex, (uint8_t *)&rqbuf_debug_value);
#endif
seq = rq->rq_tracker[bufindex];
rq->rq_tracker[bufindex] = NULL;
if (seq == NULL ) {
ocs_log_err(hw->os, "RQ buffer NULL, rqindex %d, bufindex %d, current q index = %d\n",
rqindex, bufindex, rq_hdr->index);
}
sli_queue_unlock(rq_payload);
sli_queue_unlock(rq_hdr);
return seq;
}
/**
* @brief Posts an RQ buffer to a queue and update the verification structures
*
* @param hw hardware context
* @param seq Pointer to sequence object.
*
* @return Returns 0 on success, or a non-zero value otherwise.
*/
static int32_t
ocs_hw_rqpair_put(ocs_hw_t *hw, ocs_hw_sequence_t *seq)
{
sli4_queue_t *rq_hdr = &hw->rq[seq->header->rqindex];
sli4_queue_t *rq_payload = &hw->rq[seq->payload->rqindex];
uint32_t hw_rq_index = hw->hw_rq_lookup[seq->header->rqindex];
hw_rq_t *rq = hw->hw_rq[hw_rq_index];
uint32_t phys_hdr[2];
uint32_t phys_payload[2];
int32_t qindex_hdr;
int32_t qindex_payload;
/* Update the RQ verification lookup tables */
phys_hdr[0] = ocs_addr32_hi(seq->header->dma.phys);
phys_hdr[1] = ocs_addr32_lo(seq->header->dma.phys);
phys_payload[0] = ocs_addr32_hi(seq->payload->dma.phys);
phys_payload[1] = ocs_addr32_lo(seq->payload->dma.phys);
sli_queue_lock(rq_hdr);
sli_queue_lock(rq_payload);
/*
* Note: The header must be posted last for buffer pair mode because
* posting on the header queue posts the payload queue as well.
* We do not ring the payload queue independently in RQ pair mode.
*/
qindex_payload = _sli_queue_write(&hw->sli, rq_payload, (void *)phys_payload);
qindex_hdr = _sli_queue_write(&hw->sli, rq_hdr, (void *)phys_hdr);
if (qindex_hdr < 0 ||
qindex_payload < 0) {
ocs_log_err(hw->os, "RQ_ID=%#x write failed\n", rq_hdr->id);
sli_queue_unlock(rq_payload);
sli_queue_unlock(rq_hdr);
return OCS_HW_RTN_ERROR;
}
/* ensure the indexes are the same */
ocs_hw_assert(qindex_hdr == qindex_payload);
/* Update the lookup table */
if (rq->rq_tracker[qindex_hdr] == NULL) {
rq->rq_tracker[qindex_hdr] = seq;
} else {
ocs_log_test(hw->os, "expected rq_tracker[%d][%d] buffer to be NULL\n",
hw_rq_index, qindex_hdr);
}
sli_queue_unlock(rq_payload);
sli_queue_unlock(rq_hdr);
return OCS_HW_RTN_SUCCESS;
}
/**
* @brief Return RQ buffers (while in RQ pair mode).
*
* @par Description
* The header and payload buffers are returned to the Receive Queue.
*
* @param hw Hardware context.
* @param seq Header/payload sequence buffers.
*
* @return Returns OCS_HW_RTN_SUCCESS on success, or an error code value on failure.
*/
ocs_hw_rtn_e
ocs_hw_rqpair_sequence_free(ocs_hw_t *hw, ocs_hw_sequence_t *seq)
{
ocs_hw_rtn_e rc = OCS_HW_RTN_SUCCESS;
/* Check for auto xfer rdy dummy buffers and call the proper release function. */
if (seq->header->rqindex == OCS_HW_RQ_INDEX_DUMMY_HDR) {
return ocs_hw_rqpair_auto_xfer_rdy_buffer_sequence_reset(hw, seq);
}
/*
* Post the data buffer first. Because in RQ pair mode, ringing the
* doorbell of the header ring will post the data buffer as well.
*/
if (ocs_hw_rqpair_put(hw, seq)) {
ocs_log_err(hw->os, "error writing buffers\n");
return OCS_HW_RTN_ERROR;
}
return rc;
}
/**
* @brief Find the RQ index of RQ_ID.
*
* @param hw Hardware context.
* @param rq_id RQ ID to find.
*
* @return Returns the RQ index, or -1 if not found
*/
static inline int32_t
ocs_hw_rqpair_find(ocs_hw_t *hw, uint16_t rq_id)
{
return ocs_hw_queue_hash_find(hw->rq_hash, rq_id);
}
/**
* @ingroup devInitShutdown
* @brief Allocate auto xfer rdy buffers.
*
* @par Description
* Allocates the auto xfer rdy buffers and places them on the free list.
*
* @param hw Hardware context allocated by the caller.
* @param num_buffers Number of buffers to allocate.
*
* @return Returns 0 on success, or a non-zero value on failure.
*/
ocs_hw_rtn_e
ocs_hw_rqpair_auto_xfer_rdy_buffer_alloc(ocs_hw_t *hw, uint32_t num_buffers)
{
ocs_hw_auto_xfer_rdy_buffer_t *buf;
uint32_t i;
hw->auto_xfer_rdy_buf_pool = ocs_pool_alloc(hw->os, sizeof(ocs_hw_auto_xfer_rdy_buffer_t), num_buffers, FALSE);
if (hw->auto_xfer_rdy_buf_pool == NULL) {
ocs_log_err(hw->os, "Failure to allocate auto xfer ready buffer pool\n");
return OCS_HW_RTN_NO_MEMORY;
}
for (i = 0; i < num_buffers; i++) {
/* allocate the wrapper object */
buf = ocs_pool_get_instance(hw->auto_xfer_rdy_buf_pool, i);
ocs_hw_assert(buf != NULL);
/* allocate the auto xfer ready buffer */
if (ocs_dma_alloc(hw->os, &buf->payload.dma, hw->config.auto_xfer_rdy_size, OCS_MIN_DMA_ALIGNMENT)) {
ocs_log_err(hw->os, "DMA allocation failed\n");
ocs_free(hw->os, buf, sizeof(*buf));
return OCS_HW_RTN_NO_MEMORY;
}
/* build a fake data header in big endian */
buf->hdr.info = FC_RCTL_INFO_SOL_DATA;
buf->hdr.r_ctl = FC_RCTL_FC4_DATA;
buf->hdr.type = FC_TYPE_FCP;
buf->hdr.f_ctl = fc_htobe24(FC_FCTL_EXCHANGE_RESPONDER |
FC_FCTL_FIRST_SEQUENCE |
FC_FCTL_LAST_SEQUENCE |
FC_FCTL_END_SEQUENCE |
FC_FCTL_SEQUENCE_INITIATIVE);
/* build the fake header DMA object */
buf->header.rqindex = OCS_HW_RQ_INDEX_DUMMY_HDR;
buf->header.dma.virt = &buf->hdr;
buf->header.dma.alloc = buf;
buf->header.dma.size = sizeof(buf->hdr);
buf->header.dma.len = sizeof(buf->hdr);
buf->payload.rqindex = OCS_HW_RQ_INDEX_DUMMY_DATA;
}
return OCS_HW_RTN_SUCCESS;
}
/**
* @ingroup devInitShutdown
* @brief Post Auto xfer rdy buffers to the XRIs posted with DNRX.
*
* @par Description
* When new buffers are freed, check existing XRIs waiting for buffers.
*
* @param hw Hardware context allocated by the caller.
*/
static void
ocs_hw_rqpair_auto_xfer_rdy_dnrx_check(ocs_hw_t *hw)
{
ocs_hw_io_t *io;
int32_t rc;
ocs_lock(&hw->io_lock);
while (!ocs_list_empty(&hw->io_port_dnrx)) {
io = ocs_list_remove_head(&hw->io_port_dnrx);
rc = ocs_hw_reque_xri(hw, io);
if(rc) {
break;
}
}
ocs_unlock(&hw->io_lock);
}
/**
* @brief Called when the POST_SGL_PAGE command completes.
*
* @par Description
* Free the mailbox command buffer.
*
* @param hw Hardware context.
* @param status Status field from the mbox completion.
* @param mqe Mailbox response structure.
* @param arg Pointer to a callback function that signals the caller that the command is done.
*
* @return Returns 0.
*/
static int32_t
ocs_hw_rqpair_auto_xfer_rdy_move_to_port_cb(ocs_hw_t *hw, int32_t status, uint8_t *mqe, void *arg)
{
if (status != 0) {
ocs_log_debug(hw->os, "Status 0x%x\n", status);
}
ocs_free(hw->os, mqe, SLI4_BMBX_SIZE);
return 0;
}
/**
* @brief Prepares an XRI to move to the chip.
*
* @par Description
* Puts the data SGL into the SGL list for the IO object and possibly registers
* an SGL list for the XRI. Since both the POST_XRI and POST_SGL_PAGES commands are
* mailbox commands, we don't need to wait for completion before preceding.
*
* @param hw Hardware context allocated by the caller.
* @param io Pointer to the IO object.
*
* @return Returns OCS_HW_RTN_SUCCESS for success, or an error code value for failure.
*/
ocs_hw_rtn_e
ocs_hw_rqpair_auto_xfer_rdy_move_to_port(ocs_hw_t *hw, ocs_hw_io_t *io)
{
/* We only need to preregister the SGL if it has not yet been done. */
if (!sli_get_sgl_preregister(&hw->sli)) {
uint8_t *post_sgl;
ocs_dma_t *psgls = &io->def_sgl;
ocs_dma_t **sgls = &psgls;
/* non-local buffer required for mailbox queue */
post_sgl = ocs_malloc(hw->os, SLI4_BMBX_SIZE, OCS_M_NOWAIT);
if (post_sgl == NULL) {
ocs_log_err(hw->os, "no buffer for command\n");
return OCS_HW_RTN_NO_MEMORY;
}
if (sli_cmd_fcoe_post_sgl_pages(&hw->sli, post_sgl, SLI4_BMBX_SIZE,
io->indicator, 1, sgls, NULL, NULL)) {
if (ocs_hw_command(hw, post_sgl, OCS_CMD_NOWAIT,
ocs_hw_rqpair_auto_xfer_rdy_move_to_port_cb, NULL)) {
ocs_free(hw->os, post_sgl, SLI4_BMBX_SIZE);
ocs_log_err(hw->os, "SGL post failed\n");
return OCS_HW_RTN_ERROR;
}
}
}
ocs_lock(&hw->io_lock);
if (ocs_hw_rqpair_auto_xfer_rdy_buffer_post(hw, io, 0) != 0) { /* DNRX set - no buffer */
ocs_unlock(&hw->io_lock);
return OCS_HW_RTN_ERROR;
}
ocs_unlock(&hw->io_lock);
return OCS_HW_RTN_SUCCESS;
}
/**
* @brief Prepares an XRI to move back to the host.
*
* @par Description
* Releases any attached buffer back to the pool.
*
* @param hw Hardware context allocated by the caller.
* @param io Pointer to the IO object.
*/
void
ocs_hw_rqpair_auto_xfer_rdy_move_to_host(ocs_hw_t *hw, ocs_hw_io_t *io)
{
if (io->axr_buf != NULL) {
ocs_lock(&hw->io_lock);
/* check list and remove if there */
if (ocs_list_on_list(&io->dnrx_link)) {
ocs_list_remove(&hw->io_port_dnrx, io);
io->auto_xfer_rdy_dnrx = 0;
/* release the count for waiting for a buffer */
ocs_hw_io_free(hw, io);
}
ocs_pool_put(hw->auto_xfer_rdy_buf_pool, io->axr_buf);
io->axr_buf = NULL;
ocs_unlock(&hw->io_lock);
ocs_hw_rqpair_auto_xfer_rdy_dnrx_check(hw);
}
return;
}
/**
* @brief Posts an auto xfer rdy buffer to an IO.
*
* @par Description
* Puts the data SGL into the SGL list for the IO object
* @n @name
* @b Note: io_lock must be held.
*
* @param hw Hardware context allocated by the caller.
* @param io Pointer to the IO object.
*
* @return Returns the value of DNRX bit in the TRSP and ABORT WQEs.
*/
uint8_t
ocs_hw_rqpair_auto_xfer_rdy_buffer_post(ocs_hw_t *hw, ocs_hw_io_t *io, int reuse_buf)
{
ocs_hw_auto_xfer_rdy_buffer_t *buf;
sli4_sge_t *data;
if(!reuse_buf) {
buf = ocs_pool_get(hw->auto_xfer_rdy_buf_pool);
io->axr_buf = buf;
}
data = io->def_sgl.virt;
data[0].sge_type = SLI4_SGE_TYPE_SKIP;
data[0].last = 0;
/*
* Note: if we are doing DIF assists, then the SGE[1] must contain the
* DI_SEED SGE. The host is responsible for programming:
* SGE Type (Word 2, bits 30:27)
* Replacement App Tag (Word 2 bits 15:0)
* App Tag (Word 3 bits 15:0)
* New Ref Tag (Word 3 bit 23)
* Metadata Enable (Word 3 bit 20)
* Auto-Increment RefTag (Word 3 bit 19)
* Block Size (Word 3 bits 18:16)
* The following fields are managed by the SLI Port:
* Ref Tag Compare (Word 0)
* Replacement Ref Tag (Word 1) - In not the LBA
* NA (Word 2 bit 25)
* Opcode RX (Word 3 bits 27:24)
* Checksum Enable (Word 3 bit 22)
* RefTag Enable (Word 3 bit 21)
*
* The first two SGLs are cleared by ocs_hw_io_init_sges(), so assume eveything is cleared.
*/
if (hw->config.auto_xfer_rdy_p_type) {
sli4_diseed_sge_t *diseed = (sli4_diseed_sge_t*)&data[1];
diseed->sge_type = SLI4_SGE_TYPE_DISEED;
diseed->repl_app_tag = hw->config.auto_xfer_rdy_app_tag_value;
diseed->app_tag_cmp = hw->config.auto_xfer_rdy_app_tag_value;
diseed->check_app_tag = hw->config.auto_xfer_rdy_app_tag_valid;
diseed->auto_incr_ref_tag = TRUE; /* Always the LBA */
diseed->dif_blk_size = hw->config.auto_xfer_rdy_blk_size_chip;
} else {
data[1].sge_type = SLI4_SGE_TYPE_SKIP;
data[1].last = 0;
}
data[2].sge_type = SLI4_SGE_TYPE_DATA;
data[2].buffer_address_high = ocs_addr32_hi(io->axr_buf->payload.dma.phys);
data[2].buffer_address_low = ocs_addr32_lo(io->axr_buf->payload.dma.phys);
data[2].buffer_length = io->axr_buf->payload.dma.size;
data[2].last = TRUE;
data[3].sge_type = SLI4_SGE_TYPE_SKIP;
return 0;
}
/**
* @brief Return auto xfer ready buffers (while in RQ pair mode).
*
* @par Description
* The header and payload buffers are returned to the auto xfer rdy pool.
*
* @param hw Hardware context.
* @param seq Header/payload sequence buffers.
*
* @return Returns OCS_HW_RTN_SUCCESS for success, an error code value for failure.
*/
static ocs_hw_rtn_e
ocs_hw_rqpair_auto_xfer_rdy_buffer_sequence_reset(ocs_hw_t *hw, ocs_hw_sequence_t *seq)
{
ocs_hw_auto_xfer_rdy_buffer_t *buf = seq->header->dma.alloc;
buf->data_cqe = 0;
buf->cmd_cqe = 0;
buf->fcfi = 0;
buf->call_axr_cmd = 0;
buf->call_axr_data = 0;
/* build a fake data header in big endian */
buf->hdr.info = FC_RCTL_INFO_SOL_DATA;
buf->hdr.r_ctl = FC_RCTL_FC4_DATA;
buf->hdr.type = FC_TYPE_FCP;
buf->hdr.f_ctl = fc_htobe24(FC_FCTL_EXCHANGE_RESPONDER |
FC_FCTL_FIRST_SEQUENCE |
FC_FCTL_LAST_SEQUENCE |
FC_FCTL_END_SEQUENCE |
FC_FCTL_SEQUENCE_INITIATIVE);
/* build the fake header DMA object */
buf->header.rqindex = OCS_HW_RQ_INDEX_DUMMY_HDR;
buf->header.dma.virt = &buf->hdr;
buf->header.dma.alloc = buf;
buf->header.dma.size = sizeof(buf->hdr);
buf->header.dma.len = sizeof(buf->hdr);
buf->payload.rqindex = OCS_HW_RQ_INDEX_DUMMY_DATA;
ocs_hw_rqpair_auto_xfer_rdy_dnrx_check(hw);
return OCS_HW_RTN_SUCCESS;
}
/**
* @ingroup devInitShutdown
* @brief Free auto xfer rdy buffers.
*
* @par Description
* Frees the auto xfer rdy buffers.
*
* @param hw Hardware context allocated by the caller.
*
* @return Returns 0 on success, or a non-zero value on failure.
*/
static void
ocs_hw_rqpair_auto_xfer_rdy_buffer_free(ocs_hw_t *hw)
{
ocs_hw_auto_xfer_rdy_buffer_t *buf;
uint32_t i;
if (hw->auto_xfer_rdy_buf_pool != NULL) {
ocs_lock(&hw->io_lock);
for (i = 0; i < ocs_pool_get_count(hw->auto_xfer_rdy_buf_pool); i++) {
buf = ocs_pool_get_instance(hw->auto_xfer_rdy_buf_pool, i);
if (buf != NULL) {
ocs_dma_free(hw->os, &buf->payload.dma);
}
}
ocs_unlock(&hw->io_lock);
ocs_pool_free(hw->auto_xfer_rdy_buf_pool);
hw->auto_xfer_rdy_buf_pool = NULL;
}
}
/**
* @ingroup devInitShutdown
* @brief Configure the rq_pair function from ocs_hw_init().
*
* @par Description
* Allocates the buffers to auto xfer rdy and posts initial XRIs for this feature.
*
* @param hw Hardware context allocated by the caller.
*
* @return Returns 0 on success, or a non-zero value on failure.
*/
ocs_hw_rtn_e
ocs_hw_rqpair_init(ocs_hw_t *hw)
{
ocs_hw_rtn_e rc;
uint32_t xris_posted;
ocs_log_debug(hw->os, "RQ Pair mode\n");
/*
* If we get this far, the auto XFR_RDY feature was enabled successfully, otherwise ocs_hw_init() would
* return with an error. So allocate the buffers based on the initial XRI pool required to support this
* feature.
*/
if (sli_get_auto_xfer_rdy_capable(&hw->sli) &&
hw->config.auto_xfer_rdy_size > 0) {
if (hw->auto_xfer_rdy_buf_pool == NULL) {
/*
* Allocate one more buffer than XRIs so that when all the XRIs are in use, we still have
* one to post back for the case where the response phase is started in the context of
* the data completion.
*/
rc = ocs_hw_rqpair_auto_xfer_rdy_buffer_alloc(hw, hw->config.auto_xfer_rdy_xri_cnt + 1);
if (rc != OCS_HW_RTN_SUCCESS) {
return rc;
}
} else {
ocs_pool_reset(hw->auto_xfer_rdy_buf_pool);
}
/* Post the auto XFR_RDY XRIs */
xris_posted = ocs_hw_xri_move_to_port_owned(hw, hw->config.auto_xfer_rdy_xri_cnt);
if (xris_posted != hw->config.auto_xfer_rdy_xri_cnt) {
ocs_log_err(hw->os, "post_xri failed, only posted %d XRIs\n", xris_posted);
return OCS_HW_RTN_ERROR;
}
}
return 0;
}
/**
* @ingroup devInitShutdown
* @brief Tear down the rq_pair function from ocs_hw_teardown().
*
* @par Description
* Frees the buffers to auto xfer rdy.
*
* @param hw Hardware context allocated by the caller.
*/
void
ocs_hw_rqpair_teardown(ocs_hw_t *hw)
{
/* We need to free any auto xfer ready buffers */
ocs_hw_rqpair_auto_xfer_rdy_buffer_free(hw);
}
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