1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright(c) 2017 Cavium, Inc 3 */ 4 5 #include "ssovf_worker.h" 6 7 static __rte_always_inline void 8 ssows_new_event(struct ssows *ws, const struct rte_event *ev) 9 { 10 const uint64_t event_ptr = ev->u64; 11 const uint32_t tag = (uint32_t)ev->event; 12 const uint8_t new_tt = ev->sched_type; 13 const uint8_t grp = ev->queue_id; 14 15 ssows_add_work(ws, event_ptr, tag, new_tt, grp); 16 } 17 18 static __rte_always_inline void 19 ssows_fwd_swtag(struct ssows *ws, const struct rte_event *ev, const uint8_t grp) 20 { 21 const uint8_t cur_tt = ws->cur_tt; 22 const uint8_t new_tt = ev->sched_type; 23 const uint32_t tag = (uint32_t)ev->event; 24 /* 25 * cur_tt/new_tt SSO_SYNC_ORDERED SSO_SYNC_ATOMIC SSO_SYNC_UNTAGGED 26 * 27 * SSO_SYNC_ORDERED norm norm untag 28 * SSO_SYNC_ATOMIC norm norm untag 29 * SSO_SYNC_UNTAGGED full full NOOP 30 */ 31 if (unlikely(cur_tt == SSO_SYNC_UNTAGGED)) { 32 if (new_tt != SSO_SYNC_UNTAGGED) { 33 ssows_swtag_full(ws, ev->u64, tag, 34 new_tt, grp); 35 } 36 } else { 37 if (likely(new_tt != SSO_SYNC_UNTAGGED)) 38 ssows_swtag_norm(ws, tag, new_tt); 39 else 40 ssows_swtag_untag(ws); 41 } 42 ws->swtag_req = 1; 43 } 44 45 #define OCT_EVENT_TYPE_GRP_FWD (RTE_EVENT_TYPE_MAX - 1) 46 47 static __rte_always_inline void 48 ssows_fwd_group(struct ssows *ws, const struct rte_event *ev, const uint8_t grp) 49 { 50 const uint64_t event_ptr = ev->u64; 51 const uint32_t tag = (uint32_t)ev->event; 52 const uint8_t cur_tt = ws->cur_tt; 53 const uint8_t new_tt = ev->sched_type; 54 55 if (cur_tt == SSO_SYNC_ORDERED) { 56 /* Create unique tag based on custom event type and new grp */ 57 uint32_t newtag = OCT_EVENT_TYPE_GRP_FWD << 28; 58 59 newtag |= grp << 20; 60 newtag |= tag; 61 ssows_swtag_norm(ws, newtag, SSO_SYNC_ATOMIC); 62 rte_smp_wmb(); 63 ssows_swtag_wait(ws); 64 } else { 65 rte_smp_wmb(); 66 } 67 ssows_add_work(ws, event_ptr, tag, new_tt, grp); 68 } 69 70 static __rte_always_inline void 71 ssows_forward_event(struct ssows *ws, const struct rte_event *ev) 72 { 73 const uint8_t grp = ev->queue_id; 74 75 /* Group hasn't changed, Use SWTAG to forward the event */ 76 if (ws->cur_grp == grp) 77 ssows_fwd_swtag(ws, ev, grp); 78 else 79 /* 80 * Group has been changed for group based work pipelining, 81 * Use deschedule/add_work operation to transfer the event to 82 * new group/core 83 */ 84 ssows_fwd_group(ws, ev, grp); 85 } 86 87 static __rte_always_inline void 88 ssows_release_event(struct ssows *ws) 89 { 90 if (likely(ws->cur_tt != SSO_SYNC_UNTAGGED)) 91 ssows_swtag_untag(ws); 92 } 93 94 __rte_always_inline uint16_t __hot 95 ssows_deq(void *port, struct rte_event *ev, uint64_t timeout_ticks) 96 { 97 struct ssows *ws = port; 98 99 RTE_SET_USED(timeout_ticks); 100 101 if (ws->swtag_req) { 102 ws->swtag_req = 0; 103 ssows_swtag_wait(ws); 104 return 1; 105 } else { 106 return ssows_get_work(ws, ev); 107 } 108 } 109 110 __rte_always_inline uint16_t __hot 111 ssows_deq_timeout(void *port, struct rte_event *ev, uint64_t timeout_ticks) 112 { 113 struct ssows *ws = port; 114 uint64_t iter; 115 uint16_t ret = 1; 116 117 if (ws->swtag_req) { 118 ws->swtag_req = 0; 119 ssows_swtag_wait(ws); 120 } else { 121 ret = ssows_get_work(ws, ev); 122 for (iter = 1; iter < timeout_ticks && (ret == 0); iter++) 123 ret = ssows_get_work(ws, ev); 124 } 125 return ret; 126 } 127 128 uint16_t __hot 129 ssows_deq_burst(void *port, struct rte_event ev[], uint16_t nb_events, 130 uint64_t timeout_ticks) 131 { 132 RTE_SET_USED(nb_events); 133 134 return ssows_deq(port, ev, timeout_ticks); 135 } 136 137 uint16_t __hot 138 ssows_deq_timeout_burst(void *port, struct rte_event ev[], uint16_t nb_events, 139 uint64_t timeout_ticks) 140 { 141 RTE_SET_USED(nb_events); 142 143 return ssows_deq_timeout(port, ev, timeout_ticks); 144 } 145 146 __rte_always_inline uint16_t __hot 147 ssows_enq(void *port, const struct rte_event *ev) 148 { 149 struct ssows *ws = port; 150 uint16_t ret = 1; 151 152 switch (ev->op) { 153 case RTE_EVENT_OP_NEW: 154 rte_smp_wmb(); 155 ssows_new_event(ws, ev); 156 break; 157 case RTE_EVENT_OP_FORWARD: 158 ssows_forward_event(ws, ev); 159 break; 160 case RTE_EVENT_OP_RELEASE: 161 ssows_release_event(ws); 162 break; 163 default: 164 ret = 0; 165 } 166 return ret; 167 } 168 169 uint16_t __hot 170 ssows_enq_burst(void *port, const struct rte_event ev[], uint16_t nb_events) 171 { 172 RTE_SET_USED(nb_events); 173 return ssows_enq(port, ev); 174 } 175 176 uint16_t __hot 177 ssows_enq_new_burst(void *port, const struct rte_event ev[], uint16_t nb_events) 178 { 179 uint16_t i; 180 struct ssows *ws = port; 181 182 rte_smp_wmb(); 183 for (i = 0; i < nb_events; i++) 184 ssows_new_event(ws, &ev[i]); 185 186 return nb_events; 187 } 188 189 uint16_t __hot 190 ssows_enq_fwd_burst(void *port, const struct rte_event ev[], uint16_t nb_events) 191 { 192 struct ssows *ws = port; 193 RTE_SET_USED(nb_events); 194 195 ssows_forward_event(ws, ev); 196 197 return 1; 198 } 199 200 void 201 ssows_flush_events(struct ssows *ws, uint8_t queue_id) 202 { 203 uint32_t reg_off; 204 uint64_t aq_cnt = 1; 205 uint64_t cq_ds_cnt = 1; 206 uint64_t enable, get_work0, get_work1; 207 uint8_t *base = octeontx_ssovf_bar(OCTEONTX_SSO_GROUP, queue_id, 0); 208 209 enable = ssovf_read64(base + SSO_VHGRP_QCTL); 210 if (!enable) 211 return; 212 213 reg_off = SSOW_VHWS_OP_GET_WORK0; 214 reg_off |= 1 << 17; /* Grouped */ 215 reg_off |= 1 << 16; /* WAIT */ 216 reg_off |= queue_id << 4; /* INDEX_GGRP_MASK(group number) */ 217 while (aq_cnt || cq_ds_cnt) { 218 aq_cnt = ssovf_read64(base + SSO_VHGRP_AQ_CNT); 219 cq_ds_cnt = ssovf_read64(base + SSO_VHGRP_INT_CNT); 220 /* Extract cq and ds count */ 221 cq_ds_cnt &= 0x1FFF1FFF0000; 222 ssovf_load_pair(get_work0, get_work1, ws->base + reg_off); 223 } 224 225 RTE_SET_USED(get_work0); 226 RTE_SET_USED(get_work1); 227 } 228 229 void 230 ssows_reset(struct ssows *ws) 231 { 232 uint64_t tag; 233 uint64_t pend_tag; 234 uint8_t pend_tt; 235 uint8_t tt; 236 237 tag = ssovf_read64(ws->base + SSOW_VHWS_TAG); 238 pend_tag = ssovf_read64(ws->base + SSOW_VHWS_PENDTAG); 239 240 if (pend_tag & (1ULL << 63)) { /* Tagswitch pending */ 241 pend_tt = (pend_tag >> 32) & 0x3; 242 if (pend_tt == SSO_SYNC_ORDERED || pend_tt == SSO_SYNC_ATOMIC) 243 ssows_desched(ws); 244 } else { 245 tt = (tag >> 32) & 0x3; 246 if (tt == SSO_SYNC_ORDERED || tt == SSO_SYNC_ATOMIC) 247 ssows_swtag_untag(ws); 248 } 249 } 250