| Current Path : /sys/dev/oce/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //sys/dev/oce/oce_queue.c |
/*-
* Copyright (C) 2012 Emulex
* All rights reserved.
*
* 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 Emulex Corporation 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 OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* Contact Information:
* freebsd-drivers@emulex.com
*
* Emulex
* 3333 Susan Street
* Costa Mesa, CA 92626
*/
/* $FreeBSD: release/9.1.0/sys/dev/oce/oce_queue.c 231663 2012-02-14 10:30:22Z luigi $ */
#include "oce_if.h"
/*****************************************************
* local queue functions
*****************************************************/
static struct oce_wq *oce_wq_init(POCE_SOFTC sc,
uint32_t q_len, uint32_t wq_type);
static int oce_wq_create(struct oce_wq *wq, struct oce_eq *eq);
static void oce_wq_free(struct oce_wq *wq);
static void oce_wq_del(struct oce_wq *wq);
static struct oce_rq *oce_rq_init(POCE_SOFTC sc,
uint32_t q_len,
uint32_t frag_size,
uint32_t mtu, uint32_t rss);
static int oce_rq_create(struct oce_rq *rq, uint32_t if_id, struct oce_eq *eq);
static void oce_rq_free(struct oce_rq *rq);
static void oce_rq_del(struct oce_rq *rq);
static struct oce_eq *oce_eq_create(POCE_SOFTC sc,
uint32_t q_len,
uint32_t item_size,
uint32_t eq_delay,
uint32_t vector);
static void oce_eq_del(struct oce_eq *eq);
static struct oce_mq *oce_mq_create(POCE_SOFTC sc,
struct oce_eq *eq, uint32_t q_len);
static void oce_mq_free(struct oce_mq *mq);
static int oce_destroy_q(POCE_SOFTC sc, struct oce_mbx
*mbx, size_t req_size, enum qtype qtype);
struct oce_cq *oce_cq_create(POCE_SOFTC sc,
struct oce_eq *eq,
uint32_t q_len,
uint32_t item_size,
uint32_t sol_event,
uint32_t is_eventable,
uint32_t nodelay, uint32_t ncoalesce);
static void oce_cq_del(POCE_SOFTC sc, struct oce_cq *cq);
/**
* @brief Create and initialize all the queues on the board
* @param sc software handle to the device
* @returns 0 if successful, or error
**/
int
oce_queue_init_all(POCE_SOFTC sc)
{
int rc = 0, i, vector;
struct oce_wq *wq;
struct oce_rq *rq;
/* alloc TX/RX queues */
for_all_wq_queues(sc, wq, i) {
sc->wq[i] = oce_wq_init(sc, sc->tx_ring_size,
NIC_WQ_TYPE_STANDARD);
if (!sc->wq[i])
goto error;
}
for_all_rq_queues(sc, rq, i) {
sc->rq[i] = oce_rq_init(sc, sc->rx_ring_size, sc->rq_frag_size,
OCE_MAX_JUMBO_FRAME_SIZE,
(i == 0) ? 0 : sc->rss_enable);
if (!sc->rq[i])
goto error;
}
/* Create network interface on card */
if (oce_create_nw_interface(sc))
goto error;
/* create all of the event queues */
for (vector = 0; vector < sc->intr_count; vector++) {
sc->eq[vector] = oce_eq_create(sc, EQ_LEN_1024, EQE_SIZE_4,
0, vector);
if (!sc->eq[vector])
goto error;
}
/* create Tx, Rx and mcc queues */
for_all_wq_queues(sc, wq, i) {
rc = oce_wq_create(wq, sc->eq[i]);
if (rc)
goto error;
wq->queue_index = i;
TASK_INIT(&wq->txtask, 1, oce_tx_task, wq);
}
for_all_rq_queues(sc, rq, i) {
rc = oce_rq_create(rq, sc->if_id,
sc->eq[(i == 0) ? 0:(i-1)]);
if (rc)
goto error;
rq->queue_index = i;
}
sc->mq = oce_mq_create(sc, sc->eq[0], 64);
if (!sc->mq)
goto error;
return rc;
error:
oce_queue_release_all(sc);
return 1;
}
/**
* @brief Releases all mailbox queues created
* @param sc software handle to the device
*/
void
oce_queue_release_all(POCE_SOFTC sc)
{
int i = 0;
struct oce_wq *wq;
struct oce_rq *rq;
struct oce_eq *eq;
for_all_rq_queues(sc, rq, i) {
if (rq) {
oce_rq_del(sc->rq[i]);
oce_rq_free(sc->rq[i]);
}
}
for_all_wq_queues(sc, wq, i) {
if (wq) {
oce_wq_del(sc->wq[i]);
oce_wq_free(sc->wq[i]);
}
}
if (sc->mq)
oce_mq_free(sc->mq);
for_all_evnt_queues(sc, eq, i) {
if (eq)
oce_eq_del(sc->eq[i]);
}
}
/**
* @brief Function to create a WQ for NIC Tx
* @param sc software handle to the device
* @param qlen number of entries in the queue
* @param wq_type work queue type
* @returns the pointer to the WQ created or NULL on failure
*/
static struct
oce_wq *oce_wq_init(POCE_SOFTC sc, uint32_t q_len, uint32_t wq_type)
{
struct oce_wq *wq;
int rc = 0, i;
/* q_len must be min 256 and max 2k */
if (q_len < 256 || q_len > 2048) {
device_printf(sc->dev,
"Invalid q length. Must be "
"[256, 2000]: 0x%x\n", q_len);
return NULL;
}
/* allocate wq */
wq = malloc(sizeof(struct oce_wq), M_DEVBUF, M_NOWAIT | M_ZERO);
if (!wq)
return NULL;
/* Set the wq config */
wq->cfg.q_len = q_len;
wq->cfg.wq_type = (uint8_t) wq_type;
wq->cfg.eqd = OCE_DEFAULT_WQ_EQD;
wq->cfg.nbufs = 2 * wq->cfg.q_len;
wq->cfg.nhdl = 2 * wq->cfg.q_len;
wq->parent = (void *)sc;
rc = bus_dma_tag_create(bus_get_dma_tag(sc->dev),
1, 0,
BUS_SPACE_MAXADDR,
BUS_SPACE_MAXADDR,
NULL, NULL,
OCE_MAX_TX_SIZE,
OCE_MAX_TX_ELEMENTS,
PAGE_SIZE, 0, NULL, NULL, &wq->tag);
if (rc)
goto free_wq;
for (i = 0; i < OCE_WQ_PACKET_ARRAY_SIZE; i++) {
rc = bus_dmamap_create(wq->tag, 0, &wq->pckts[i].map);
if (rc)
goto free_wq;
}
wq->ring = oce_create_ring_buffer(sc, q_len, NIC_WQE_SIZE);
if (!wq->ring)
goto free_wq;
LOCK_CREATE(&wq->tx_lock, "TX_lock");
#if __FreeBSD_version >= 800000
/* Allocate buf ring for multiqueue*/
wq->br = buf_ring_alloc(4096, M_DEVBUF,
M_WAITOK, &wq->tx_lock.mutex);
if (!wq->br)
goto free_wq;
#endif
return wq;
free_wq:
device_printf(sc->dev, "Create WQ failed\n");
oce_wq_free(wq);
return NULL;
}
/**
* @brief Frees the work queue
* @param wq pointer to work queue to free
*/
static void
oce_wq_free(struct oce_wq *wq)
{
POCE_SOFTC sc = (POCE_SOFTC) wq->parent;
int i;
taskqueue_drain(taskqueue_swi, &wq->txtask);
if (wq->ring != NULL) {
oce_destroy_ring_buffer(sc, wq->ring);
wq->ring = NULL;
}
for (i = 0; i < OCE_WQ_PACKET_ARRAY_SIZE; i++) {
if (wq->pckts[i].map != NULL) {
bus_dmamap_unload(wq->tag, wq->pckts[i].map);
bus_dmamap_destroy(wq->tag, wq->pckts[i].map);
wq->pckts[i].map = NULL;
}
}
if (wq->tag != NULL)
bus_dma_tag_destroy(wq->tag);
if (wq->br != NULL)
buf_ring_free(wq->br, M_DEVBUF);
LOCK_DESTROY(&wq->tx_lock);
free(wq, M_DEVBUF);
}
/**
* @brief Create a work queue
* @param wq pointer to work queue
* @param eq pointer to associated event queue
*/
static int
oce_wq_create(struct oce_wq *wq, struct oce_eq *eq)
{
POCE_SOFTC sc = wq->parent;
struct oce_cq *cq;
int rc = 0;
/* create the CQ */
cq = oce_cq_create(sc,
eq,
CQ_LEN_1024,
sizeof(struct oce_nic_tx_cqe), 0, 1, 0, 3);
if (!cq)
return ENXIO;
wq->cq = cq;
rc = oce_mbox_create_wq(wq);
if (rc)
goto error;
wq->qstate = QCREATED;
wq->wq_free = wq->cfg.q_len;
wq->ring->cidx = 0;
wq->ring->pidx = 0;
eq->cq[eq->cq_valid] = cq;
eq->cq_valid++;
cq->cb_arg = wq;
cq->cq_handler = oce_wq_handler;
return 0;
error:
device_printf(sc->dev, "WQ create failed\n");
oce_wq_del(wq);
return rc;
}
/**
* @brief Delete a work queue
* @param wq pointer to work queue
*/
static void
oce_wq_del(struct oce_wq *wq)
{
struct oce_mbx mbx;
struct mbx_delete_nic_wq *fwcmd;
POCE_SOFTC sc = (POCE_SOFTC) wq->parent;
if (wq->qstate == QCREATED) {
bzero(&mbx, sizeof(struct oce_mbx));
/* now fill the command */
fwcmd = (struct mbx_delete_nic_wq *)&mbx.payload;
fwcmd->params.req.wq_id = wq->wq_id;
(void)oce_destroy_q(sc, &mbx,
sizeof(struct mbx_delete_nic_wq), QTYPE_WQ);
wq->qstate = QDELETED;
}
if (wq->cq != NULL) {
oce_cq_del(sc, wq->cq);
wq->cq = NULL;
}
}
/**
* @brief function to allocate receive queue resources
* @param sc software handle to the device
* @param q_len length of receive queue
* @param frag_size size of an receive queue fragment
* @param mtu maximum transmission unit
* @param rss is-rss-queue flag
* @returns the pointer to the RQ created or NULL on failure
*/
static struct
oce_rq *oce_rq_init(POCE_SOFTC sc,
uint32_t q_len,
uint32_t frag_size,
uint32_t mtu, uint32_t rss)
{
struct oce_rq *rq;
int rc = 0, i;
if (OCE_LOG2(frag_size) <= 0)
return NULL;
if ((q_len == 0) || (q_len > 1024))
return NULL;
/* allocate the rq */
rq = malloc(sizeof(struct oce_rq), M_DEVBUF, M_NOWAIT | M_ZERO);
if (!rq)
return NULL;
rq->cfg.q_len = q_len;
rq->cfg.frag_size = frag_size;
rq->cfg.mtu = mtu;
rq->cfg.eqd = 0;
rq->lro_pkts_queued = 0;
rq->cfg.is_rss_queue = rss;
rq->packets_in = 0;
rq->packets_out = 0;
rq->pending = 0;
rq->parent = (void *)sc;
rc = bus_dma_tag_create(bus_get_dma_tag(sc->dev),
1, 0,
BUS_SPACE_MAXADDR,
BUS_SPACE_MAXADDR,
NULL, NULL,
OCE_MAX_RX_SIZE,
1, PAGE_SIZE, 0, NULL, NULL, &rq->tag);
if (rc)
goto free_rq;
for (i = 0; i < OCE_RQ_PACKET_ARRAY_SIZE; i++) {
rc = bus_dmamap_create(rq->tag, 0, &rq->pckts[i].map);
if (rc)
goto free_rq;
}
/* create the ring buffer */
rq->ring = oce_create_ring_buffer(sc, q_len,
sizeof(struct oce_nic_rqe));
if (!rq->ring)
goto free_rq;
LOCK_CREATE(&rq->rx_lock, "RX_lock");
return rq;
free_rq:
device_printf(sc->dev, "Create RQ failed\n");
oce_rq_free(rq);
return NULL;
}
/**
* @brief Free a receive queue
* @param rq pointer to receive queue
*/
static void
oce_rq_free(struct oce_rq *rq)
{
POCE_SOFTC sc = (POCE_SOFTC) rq->parent;
int i = 0 ;
if (rq->ring != NULL) {
oce_destroy_ring_buffer(sc, rq->ring);
rq->ring = NULL;
}
for (i = 0; i < OCE_RQ_PACKET_ARRAY_SIZE; i++) {
if (rq->pckts[i].map != NULL) {
bus_dmamap_unload(rq->tag, rq->pckts[i].map);
bus_dmamap_destroy(rq->tag, rq->pckts[i].map);
rq->pckts[i].map = NULL;
}
if (rq->pckts[i].mbuf) {
m_free(rq->pckts[i].mbuf);
rq->pckts[i].mbuf = NULL;
}
}
if (rq->tag != NULL)
bus_dma_tag_destroy(rq->tag);
LOCK_DESTROY(&rq->rx_lock);
free(rq, M_DEVBUF);
}
/**
* @brief Create a receive queue
* @param rq receive queue
* @param if_id interface identifier index`
* @param eq pointer to event queue
*/
static int
oce_rq_create(struct oce_rq *rq, uint32_t if_id, struct oce_eq *eq)
{
POCE_SOFTC sc = rq->parent;
struct oce_cq *cq;
cq = oce_cq_create(sc,
eq,
CQ_LEN_1024,
sizeof(struct oce_nic_rx_cqe), 0, 1, 0, 3);
if (!cq)
return ENXIO;
rq->cq = cq;
rq->cfg.if_id = if_id;
/* Dont create RQ here. Create in if_activate */
rq->qstate = 0;
rq->ring->cidx = 0;
rq->ring->pidx = 0;
eq->cq[eq->cq_valid] = cq;
eq->cq_valid++;
cq->cb_arg = rq;
cq->cq_handler = oce_rq_handler;
return 0;
}
/**
* @brief Delete a receive queue
* @param rq receive queue
*/
static void
oce_rq_del(struct oce_rq *rq)
{
POCE_SOFTC sc = (POCE_SOFTC) rq->parent;
struct oce_mbx mbx;
struct mbx_delete_nic_rq *fwcmd;
if (rq->qstate == QCREATED) {
bzero(&mbx, sizeof(mbx));
fwcmd = (struct mbx_delete_nic_rq *)&mbx.payload;
fwcmd->params.req.rq_id = rq->rq_id;
(void)oce_destroy_q(sc, &mbx,
sizeof(struct mbx_delete_nic_rq), QTYPE_RQ);
rq->qstate = QDELETED;
}
if (rq->cq != NULL) {
oce_cq_del(sc, rq->cq);
rq->cq = NULL;
}
}
/**
* @brief function to create an event queue
* @param sc software handle to the device
* @param q_len length of event queue
* @param item_size size of an event queue item
* @param eq_delay event queue delay
* @retval eq success, pointer to event queue
* @retval NULL failure
*/
static struct
oce_eq *oce_eq_create(POCE_SOFTC sc, uint32_t q_len,
uint32_t item_size,
uint32_t eq_delay,
uint32_t vector)
{
struct oce_eq *eq;
int rc = 0;
/* allocate an eq */
eq = malloc(sizeof(struct oce_eq), M_DEVBUF, M_NOWAIT | M_ZERO);
if (eq == NULL)
return NULL;
eq->parent = (void *)sc;
eq->eq_id = 0xffff;
eq->ring = oce_create_ring_buffer(sc, q_len, item_size);
if (!eq->ring)
goto free_eq;
eq->eq_cfg.q_len = q_len;
eq->eq_cfg.item_size = item_size;
eq->eq_cfg.cur_eqd = (uint8_t) eq_delay;
rc = oce_mbox_create_eq(eq);
if (rc)
goto free_eq;
sc->intrs[sc->neqs++].eq = eq;
return eq;
free_eq:
oce_eq_del(eq);
return NULL;
}
/**
* @brief Function to delete an event queue
* @param eq pointer to an event queue
*/
static void
oce_eq_del(struct oce_eq *eq)
{
struct oce_mbx mbx;
struct mbx_destroy_common_eq *fwcmd;
POCE_SOFTC sc = (POCE_SOFTC) eq->parent;
if (eq->eq_id != 0xffff) {
bzero(&mbx, sizeof(mbx));
fwcmd = (struct mbx_destroy_common_eq *)&mbx.payload;
fwcmd->params.req.id = eq->eq_id;
(void)oce_destroy_q(sc, &mbx,
sizeof(struct mbx_destroy_common_eq), QTYPE_EQ);
}
if (eq->ring != NULL) {
oce_destroy_ring_buffer(sc, eq->ring);
eq->ring = NULL;
}
free(eq, M_DEVBUF);
}
/**
* @brief Function to create an MQ
* @param sc software handle to the device
* @param eq the EQ to associate with the MQ for event notification
* @param q_len the number of entries to create in the MQ
* @returns pointer to the created MQ, failure otherwise
*/
static struct oce_mq *
oce_mq_create(POCE_SOFTC sc, struct oce_eq *eq, uint32_t q_len)
{
struct oce_mbx mbx;
struct mbx_create_common_mq *fwcmd = NULL;
struct oce_mq *mq = NULL;
int rc = 0;
struct oce_cq *cq;
oce_mq_ctx_t *ctx;
uint32_t num_pages;
uint32_t page_size;
uint32_t version;
cq = oce_cq_create(sc, eq, CQ_LEN_256,
sizeof(struct oce_mq_cqe), 1, 1, 0, 0);
if (!cq)
return NULL;
/* allocate the mq */
mq = malloc(sizeof(struct oce_mq), M_DEVBUF, M_NOWAIT | M_ZERO);
if (!mq) {
oce_cq_del(sc, cq);
goto error;
}
mq->parent = sc;
mq->ring = oce_create_ring_buffer(sc, q_len, sizeof(struct oce_mbx));
if (!mq->ring)
goto error;
bzero(&mbx, sizeof(struct oce_mbx));
fwcmd = (struct mbx_create_common_mq *)&mbx.payload;
version = OCE_MBX_VER_V0;
mbx_common_req_hdr_init(&fwcmd->hdr, 0, 0,
MBX_SUBSYSTEM_COMMON,
OPCODE_COMMON_CREATE_MQ,
MBX_TIMEOUT_SEC,
sizeof(struct mbx_create_common_mq),
version);
num_pages = oce_page_list(mq->ring, &fwcmd->params.req.pages[0]);
page_size = mq->ring->num_items * mq->ring->item_size;
ctx = &fwcmd->params.req.context;
ctx->v0.num_pages = num_pages;
ctx->v0.cq_id = cq->cq_id;
ctx->v0.ring_size = OCE_LOG2(q_len) + 1;
ctx->v0.valid = 1;
mbx.u0.s.embedded = 1;
mbx.payload_length = sizeof(struct mbx_create_common_mq);
DW_SWAP(u32ptr(&mbx), mbx.payload_length + OCE_BMBX_RHDR_SZ);
rc = oce_mbox_post(sc, &mbx, NULL);
if (rc)
goto error;
mq->mq_id = LE_16(fwcmd->params.rsp.mq_id);
mq->cq = cq;
eq->cq[eq->cq_valid] = cq;
eq->cq_valid++;
mq->cq->eq = eq;
mq->cfg.q_len = (uint8_t) q_len;
mq->cfg.eqd = 0;
mq->qstate = QCREATED;
mq->cq->cb_arg = mq;
mq->cq->cq_handler = oce_mq_handler;
return mq;
error:
device_printf(sc->dev, "MQ create failed\n");
oce_mq_free(mq);
mq = NULL;
return mq;
}
/**
* @brief Function to free a mailbox queue
* @param mq pointer to a mailbox queue
*/
static void
oce_mq_free(struct oce_mq *mq)
{
POCE_SOFTC sc = (POCE_SOFTC) mq->parent;
struct oce_mbx mbx;
struct mbx_destroy_common_mq *fwcmd;
if (!mq)
return;
if (mq->ring != NULL) {
oce_destroy_ring_buffer(sc, mq->ring);
mq->ring = NULL;
if (mq->qstate == QCREATED) {
bzero(&mbx, sizeof (struct oce_mbx));
fwcmd = (struct mbx_destroy_common_mq *)&mbx.payload;
fwcmd->params.req.id = mq->mq_id;
(void) oce_destroy_q(sc, &mbx,
sizeof (struct mbx_destroy_common_mq),
QTYPE_MQ);
}
mq->qstate = QDELETED;
}
if (mq->cq != NULL) {
oce_cq_del(sc, mq->cq);
mq->cq = NULL;
}
free(mq, M_DEVBUF);
mq = NULL;
}
/**
* @brief Function to delete a EQ, CQ, MQ, WQ or RQ
* @param sc sofware handle to the device
* @param mbx mailbox command to send to the fw to delete the queue
* (mbx contains the queue information to delete)
* @param req_size the size of the mbx payload dependent on the qtype
* @param qtype the type of queue i.e. EQ, CQ, MQ, WQ or RQ
* @returns 0 on success, failure otherwise
*/
static int
oce_destroy_q(POCE_SOFTC sc, struct oce_mbx *mbx, size_t req_size,
enum qtype qtype)
{
struct mbx_hdr *hdr = (struct mbx_hdr *)&mbx->payload;
int opcode;
int subsys;
int rc = 0;
switch (qtype) {
case QTYPE_EQ:
opcode = OPCODE_COMMON_DESTROY_EQ;
subsys = MBX_SUBSYSTEM_COMMON;
break;
case QTYPE_CQ:
opcode = OPCODE_COMMON_DESTROY_CQ;
subsys = MBX_SUBSYSTEM_COMMON;
break;
case QTYPE_MQ:
opcode = OPCODE_COMMON_DESTROY_MQ;
subsys = MBX_SUBSYSTEM_COMMON;
break;
case QTYPE_WQ:
opcode = NIC_DELETE_WQ;
subsys = MBX_SUBSYSTEM_NIC;
break;
case QTYPE_RQ:
opcode = NIC_DELETE_RQ;
subsys = MBX_SUBSYSTEM_NIC;
break;
default:
return EINVAL;
}
mbx_common_req_hdr_init(hdr, 0, 0, subsys,
opcode, MBX_TIMEOUT_SEC, req_size,
OCE_MBX_VER_V0);
mbx->u0.s.embedded = 1;
mbx->payload_length = (uint32_t) req_size;
DW_SWAP(u32ptr(mbx), mbx->payload_length + OCE_BMBX_RHDR_SZ);
rc = oce_mbox_post(sc, mbx, NULL);
if (rc != 0)
device_printf(sc->dev, "Failed to del q\n");
return rc;
}
/**
* @brief Function to create a completion queue
* @param sc software handle to the device
* @param eq optional eq to be associated with to the cq
* @param q_len length of completion queue
* @param item_size size of completion queue items
* @param sol_event command context event
* @param is_eventable event table
* @param nodelay no delay flag
* @param ncoalesce no coalescence flag
* @returns pointer to the cq created, NULL on failure
*/
struct oce_cq *
oce_cq_create(POCE_SOFTC sc, struct oce_eq *eq,
uint32_t q_len,
uint32_t item_size,
uint32_t sol_event,
uint32_t is_eventable,
uint32_t nodelay, uint32_t ncoalesce)
{
struct oce_cq *cq = NULL;
int rc = 0;
cq = malloc(sizeof(struct oce_cq), M_DEVBUF, M_NOWAIT | M_ZERO);
if (!cq)
return NULL;
cq->ring = oce_create_ring_buffer(sc, q_len, item_size);
if (!cq->ring)
goto error;
cq->parent = sc;
cq->eq = eq;
cq->cq_cfg.q_len = q_len;
cq->cq_cfg.item_size = item_size;
cq->cq_cfg.nodelay = (uint8_t) nodelay;
rc = oce_mbox_cq_create(cq, ncoalesce, is_eventable);
if (rc)
goto error;
sc->cq[sc->ncqs++] = cq;
return cq;
error:
device_printf(sc->dev, "CQ create failed\n");
oce_cq_del(sc, cq);
return NULL;
}
/**
* @brief Deletes the completion queue
* @param sc software handle to the device
* @param cq pointer to a completion queue
*/
static void
oce_cq_del(POCE_SOFTC sc, struct oce_cq *cq)
{
struct oce_mbx mbx;
struct mbx_destroy_common_cq *fwcmd;
if (cq->ring != NULL) {
bzero(&mbx, sizeof(struct oce_mbx));
/* now fill the command */
fwcmd = (struct mbx_destroy_common_cq *)&mbx.payload;
fwcmd->params.req.id = cq->cq_id;
(void)oce_destroy_q(sc, &mbx,
sizeof(struct mbx_destroy_common_cq), QTYPE_CQ);
/*NOW destroy the ring */
oce_destroy_ring_buffer(sc, cq->ring);
cq->ring = NULL;
}
free(cq, M_DEVBUF);
cq = NULL;
}
/**
* @brief Start a receive queue
* @param rq pointer to a receive queue
*/
int
oce_start_rq(struct oce_rq *rq)
{
int rc;
rc = oce_alloc_rx_bufs(rq, rq->cfg.q_len);
if (rc == 0)
oce_arm_cq(rq->parent, rq->cq->cq_id, 0, TRUE);
return rc;
}
/**
* @brief Start a work queue
* @param wq pointer to a work queue
*/
int
oce_start_wq(struct oce_wq *wq)
{
oce_arm_cq(wq->parent, wq->cq->cq_id, 0, TRUE);
return 0;
}
/**
* @brief Start a mailbox queue
* @param mq pointer to a mailbox queue
*/
int
oce_start_mq(struct oce_mq *mq)
{
oce_arm_cq(mq->parent, mq->cq->cq_id, 0, TRUE);
return 0;
}
/**
* @brief Function to arm an EQ so that it can generate events
* @param sc software handle to the device
* @param qid id of the EQ returned by the fw at the time of creation
* @param npopped number of EQEs to arm
* @param rearm rearm bit enable/disable
* @param clearint bit to clear the interrupt condition because of which
* EQEs are generated
*/
void
oce_arm_eq(POCE_SOFTC sc,
int16_t qid, int npopped, uint32_t rearm, uint32_t clearint)
{
eq_db_t eq_db = { 0 };
eq_db.bits.rearm = rearm;
eq_db.bits.event = 1;
eq_db.bits.num_popped = npopped;
eq_db.bits.clrint = clearint;
eq_db.bits.qid = qid;
OCE_WRITE_REG32(sc, db, PD_EQ_DB, eq_db.dw0);
}
/**
* @brief Function to arm a CQ with CQEs
* @param sc software handle to the device
* @param qid id of the CQ returned by the fw at the time of creation
* @param npopped number of CQEs to arm
* @param rearm rearm bit enable/disable
*/
void oce_arm_cq(POCE_SOFTC sc, int16_t qid, int npopped, uint32_t rearm)
{
cq_db_t cq_db = { 0 };
cq_db.bits.rearm = rearm;
cq_db.bits.num_popped = npopped;
cq_db.bits.event = 0;
cq_db.bits.qid = qid;
OCE_WRITE_REG32(sc, db, PD_CQ_DB, cq_db.dw0);
}
/*
* @brief function to cleanup the eqs used during stop
* @param eq pointer to event queue structure
* @returns the number of EQs processed
*/
void
oce_drain_eq(struct oce_eq *eq)
{
struct oce_eqe *eqe;
uint16_t num_eqe = 0;
POCE_SOFTC sc = eq->parent;
do {
eqe = RING_GET_CONSUMER_ITEM_VA(eq->ring, struct oce_eqe);
if (eqe->evnt == 0)
break;
eqe->evnt = 0;
bus_dmamap_sync(eq->ring->dma.tag, eq->ring->dma.map,
BUS_DMASYNC_POSTWRITE);
num_eqe++;
RING_GET(eq->ring, 1);
} while (TRUE);
oce_arm_eq(sc, eq->eq_id, num_eqe, FALSE, TRUE);
}
void
oce_drain_wq_cq(struct oce_wq *wq)
{
POCE_SOFTC sc = wq->parent;
struct oce_cq *cq = wq->cq;
struct oce_nic_tx_cqe *cqe;
int num_cqes = 0;
bus_dmamap_sync(cq->ring->dma.tag, cq->ring->dma.map,
BUS_DMASYNC_POSTWRITE);
do {
cqe = RING_GET_CONSUMER_ITEM_VA(cq->ring, struct oce_nic_tx_cqe);
if (cqe->u0.dw[3] == 0)
break;
cqe->u0.dw[3] = 0;
bus_dmamap_sync(cq->ring->dma.tag, cq->ring->dma.map,
BUS_DMASYNC_POSTWRITE);
RING_GET(cq->ring, 1);
num_cqes++;
} while (TRUE);
oce_arm_cq(sc, cq->cq_id, num_cqes, FALSE);
}
/*
* @brief function to drain a MCQ and process its CQEs
* @param dev software handle to the device
* @param cq pointer to the cq to drain
* @returns the number of CQEs processed
*/
void
oce_drain_mq_cq(void *arg)
{
/* TODO: additional code. */
return;
}
/**
* @brief function to process a Recieve queue
* @param arg pointer to the RQ to charge
* @return number of cqes processed
*/
void
oce_drain_rq_cq(struct oce_rq *rq)
{
struct oce_nic_rx_cqe *cqe;
uint16_t num_cqe = 0;
struct oce_cq *cq;
POCE_SOFTC sc;
sc = rq->parent;
cq = rq->cq;
cqe = RING_GET_CONSUMER_ITEM_VA(cq->ring, struct oce_nic_rx_cqe);
/* dequeue till you reach an invalid cqe */
while (RQ_CQE_VALID(cqe)) {
RQ_CQE_INVALIDATE(cqe);
RING_GET(cq->ring, 1);
cqe = RING_GET_CONSUMER_ITEM_VA(cq->ring,
struct oce_nic_rx_cqe);
num_cqe++;
}
oce_arm_cq(sc, cq->cq_id, num_cqe, FALSE);
return;
}
void
oce_free_posted_rxbuf(struct oce_rq *rq)
{
struct oce_packet_desc *pd;
while (rq->pending) {
pd = &rq->pckts[rq->packets_out];
bus_dmamap_sync(rq->tag, pd->map, BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(rq->tag, pd->map);
if (pd->mbuf != NULL) {
m_freem(pd->mbuf);
pd->mbuf = NULL;
}
if ((rq->packets_out + 1) == OCE_RQ_PACKET_ARRAY_SIZE)
rq->packets_out = 0;
else
rq->packets_out++;
rq->pending--;
}
}
void
oce_stop_rx(POCE_SOFTC sc)
{
struct oce_mbx mbx;
struct mbx_delete_nic_rq *fwcmd;
struct oce_rq *rq;
int i = 0;
for_all_rq_queues(sc, rq, i) {
if (rq->qstate == QCREATED) {
/* Delete rxq in firmware */
bzero(&mbx, sizeof(mbx));
fwcmd = (struct mbx_delete_nic_rq *)&mbx.payload;
fwcmd->params.req.rq_id = rq->rq_id;
(void)oce_destroy_q(sc, &mbx,
sizeof(struct mbx_delete_nic_rq), QTYPE_RQ);
rq->qstate = QDELETED;
DELAY(1);
/* Free posted RX buffers that are not used */
oce_free_posted_rxbuf(rq);
}
}
}
int
oce_start_rx(POCE_SOFTC sc)
{
struct oce_rq *rq;
int rc = 0, i;
for_all_rq_queues(sc, rq, i) {
if (rq->qstate == QCREATED)
continue;
rc = oce_mbox_create_rq(rq);
if (rc)
goto error;
/* reset queue pointers */
rq->qstate = QCREATED;
rq->pending = 0;
rq->ring->cidx = 0;
rq->ring->pidx = 0;
rq->packets_in = 0;
rq->packets_out = 0;
}
DELAY(1);
/* RSS config */
if (sc->rss_enable) {
rc = oce_config_nic_rss(sc, (uint8_t) sc->if_id, RSS_ENABLE);
if (rc)
goto error;
}
return rc;
error:
device_printf(sc->dev, "Start RX failed\n");
return rc;
}