diff options
Diffstat (limited to 'drivers/event/octeontx/ssovf_worker.c')
| -rw-r--r-- | drivers/event/octeontx/ssovf_worker.c | 252 |
1 files changed, 252 insertions, 0 deletions
diff --git a/drivers/event/octeontx/ssovf_worker.c b/drivers/event/octeontx/ssovf_worker.c new file mode 100644 index 00000000..ad3fe684 --- /dev/null +++ b/drivers/event/octeontx/ssovf_worker.c @@ -0,0 +1,252 @@ +/* + * BSD LICENSE + * + * Copyright (C) Cavium networks Ltd. 2017. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Cavium networks 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. + */ + +#include "ssovf_worker.h" + +static force_inline void +ssows_new_event(struct ssows *ws, const struct rte_event *ev) +{ + const uint64_t event_ptr = ev->u64; + const uint32_t tag = (uint32_t)ev->event; + const uint8_t new_tt = ev->sched_type; + const uint8_t grp = ev->queue_id; + + ssows_add_work(ws, event_ptr, tag, new_tt, grp); +} + +static force_inline void +ssows_fwd_swtag(struct ssows *ws, const struct rte_event *ev, const uint8_t grp) +{ + const uint8_t cur_tt = ws->cur_tt; + const uint8_t new_tt = ev->sched_type; + const uint32_t tag = (uint32_t)ev->event; + /* + * cur_tt/new_tt SSO_SYNC_ORDERED SSO_SYNC_ATOMIC SSO_SYNC_UNTAGGED + * + * SSO_SYNC_ORDERED norm norm untag + * SSO_SYNC_ATOMIC norm norm untag + * SSO_SYNC_UNTAGGED full full NOOP + */ + if (unlikely(cur_tt == SSO_SYNC_UNTAGGED)) { + if (new_tt != SSO_SYNC_UNTAGGED) { + ssows_swtag_full(ws, ev->u64, tag, + new_tt, grp); + } + } else { + if (likely(new_tt != SSO_SYNC_UNTAGGED)) + ssows_swtag_norm(ws, tag, new_tt); + else + ssows_swtag_untag(ws); + } + ws->swtag_req = 1; +} + +#define OCT_EVENT_TYPE_GRP_FWD (RTE_EVENT_TYPE_MAX - 1) + +static force_inline void +ssows_fwd_group(struct ssows *ws, const struct rte_event *ev, const uint8_t grp) +{ + const uint64_t event_ptr = ev->u64; + const uint32_t tag = (uint32_t)ev->event; + const uint8_t cur_tt = ws->cur_tt; + const uint8_t new_tt = ev->sched_type; + + if (cur_tt == SSO_SYNC_ORDERED) { + /* Create unique tag based on custom event type and new grp */ + uint32_t newtag = OCT_EVENT_TYPE_GRP_FWD << 28; + + newtag |= grp << 20; + newtag |= tag; + ssows_swtag_norm(ws, newtag, SSO_SYNC_ATOMIC); + rte_smp_wmb(); + ssows_swtag_wait(ws); + } else { + rte_smp_wmb(); + } + ssows_add_work(ws, event_ptr, tag, new_tt, grp); +} + +static force_inline void +ssows_forward_event(struct ssows *ws, const struct rte_event *ev) +{ + const uint8_t grp = ev->queue_id; + + /* Group hasn't changed, Use SWTAG to forward the event */ + if (ws->cur_grp == grp) + ssows_fwd_swtag(ws, ev, grp); + else + /* + * Group has been changed for group based work pipelining, + * Use deschedule/add_work operation to transfer the event to + * new group/core + */ + ssows_fwd_group(ws, ev, grp); +} + +static force_inline void +ssows_release_event(struct ssows *ws) +{ + if (likely(ws->cur_tt != SSO_SYNC_UNTAGGED)) + ssows_swtag_untag(ws); +} + +force_inline uint16_t __hot +ssows_deq(void *port, struct rte_event *ev, uint64_t timeout_ticks) +{ + struct ssows *ws = port; + + RTE_SET_USED(timeout_ticks); + + ssows_swtag_wait(ws); + if (ws->swtag_req) { + ws->swtag_req = 0; + return 1; + } else { + return ssows_get_work(ws, ev); + } +} + +force_inline uint16_t __hot +ssows_deq_timeout(void *port, struct rte_event *ev, uint64_t timeout_ticks) +{ + struct ssows *ws = port; + uint64_t iter; + uint16_t ret = 1; + + ssows_swtag_wait(ws); + if (ws->swtag_req) { + ws->swtag_req = 0; + } else { + ret = ssows_get_work(ws, ev); + for (iter = 1; iter < timeout_ticks && (ret == 0); iter++) + ret = ssows_get_work(ws, ev); + } + return ret; +} + +uint16_t __hot +ssows_deq_burst(void *port, struct rte_event ev[], uint16_t nb_events, + uint64_t timeout_ticks) +{ + RTE_SET_USED(nb_events); + + return ssows_deq(port, ev, timeout_ticks); +} + +uint16_t __hot +ssows_deq_timeout_burst(void *port, struct rte_event ev[], uint16_t nb_events, + uint64_t timeout_ticks) +{ + RTE_SET_USED(nb_events); + + return ssows_deq_timeout(port, ev, timeout_ticks); +} + +force_inline uint16_t __hot +ssows_enq(void *port, const struct rte_event *ev) +{ + struct ssows *ws = port; + uint16_t ret = 1; + + switch (ev->op) { + case RTE_EVENT_OP_NEW: + ssows_new_event(ws, ev); + break; + case RTE_EVENT_OP_FORWARD: + ssows_forward_event(ws, ev); + break; + case RTE_EVENT_OP_RELEASE: + ssows_release_event(ws); + break; + default: + ret = 0; + } + return ret; +} + +uint16_t __hot +ssows_enq_burst(void *port, const struct rte_event ev[], uint16_t nb_events) +{ + RTE_SET_USED(nb_events); + return ssows_enq(port, ev); +} + +void +ssows_flush_events(struct ssows *ws, uint8_t queue_id) +{ + uint32_t reg_off; + uint64_t aq_cnt = 1; + uint64_t cq_ds_cnt = 1; + uint64_t enable, get_work0, get_work1; + uint8_t *base = octeontx_ssovf_bar(OCTEONTX_SSO_GROUP, queue_id, 0); + + enable = ssovf_read64(base + SSO_VHGRP_QCTL); + if (!enable) + return; + + reg_off = SSOW_VHWS_OP_GET_WORK0; + reg_off |= 1 << 17; /* Grouped */ + reg_off |= 1 << 16; /* WAIT */ + reg_off |= queue_id << 4; /* INDEX_GGRP_MASK(group number) */ + while (aq_cnt || cq_ds_cnt) { + aq_cnt = ssovf_read64(base + SSO_VHGRP_AQ_CNT); + cq_ds_cnt = ssovf_read64(base + SSO_VHGRP_INT_CNT); + /* Extract cq and ds count */ + cq_ds_cnt &= 0x1FFF1FFF0000; + ssovf_load_pair(get_work0, get_work1, ws->base + reg_off); + } + + RTE_SET_USED(get_work0); + RTE_SET_USED(get_work1); +} + +void +ssows_reset(struct ssows *ws) +{ + uint64_t tag; + uint64_t pend_tag; + uint8_t pend_tt; + uint8_t tt; + + tag = ssovf_read64(ws->base + SSOW_VHWS_TAG); + pend_tag = ssovf_read64(ws->base + SSOW_VHWS_PENDTAG); + + if (pend_tag & (1ULL << 63)) { /* Tagswitch pending */ + pend_tt = (pend_tag >> 32) & 0x3; + if (pend_tt == SSO_SYNC_ORDERED || pend_tt == SSO_SYNC_ATOMIC) + ssows_desched(ws); + } else { + tt = (tag >> 32) & 0x3; + if (tt == SSO_SYNC_ORDERED || tt == SSO_SYNC_ATOMIC) + ssows_swtag_untag(ws); + } +} |