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 ssows_handle_event_t fn, void *arg) 203 { 204 uint32_t reg_off; 205 struct rte_event ev; 206 uint64_t enable, aq_cnt = 1, cq_ds_cnt = 1; 207 uint64_t get_work0, get_work1; 208 uint64_t sched_type_queue; 209 uint8_t *base = ssovf_bar(OCTEONTX_SSO_GROUP, queue_id, 0); 210 211 enable = ssovf_read64(base + SSO_VHGRP_QCTL); 212 if (!enable) 213 return; 214 215 reg_off = SSOW_VHWS_OP_GET_WORK0; 216 reg_off |= 1 << 17; /* Grouped */ 217 reg_off |= 1 << 16; /* WAIT */ 218 reg_off |= queue_id << 4; /* INDEX_GGRP_MASK(group number) */ 219 while (aq_cnt || cq_ds_cnt) { 220 aq_cnt = ssovf_read64(base + SSO_VHGRP_AQ_CNT); 221 cq_ds_cnt = ssovf_read64(base + SSO_VHGRP_INT_CNT); 222 /* Extract cq and ds count */ 223 cq_ds_cnt &= 0x1FFF1FFF0000; 224 225 ssovf_load_pair(get_work0, get_work1, ws->base + reg_off); 226 227 sched_type_queue = (get_work0 >> 32) & 0xfff; 228 ws->cur_tt = sched_type_queue & 0x3; 229 ws->cur_grp = sched_type_queue >> 2; 230 sched_type_queue = sched_type_queue << 38; 231 ev.event = sched_type_queue | (get_work0 & 0xffffffff); 232 if (get_work1 && ev.event_type == RTE_EVENT_TYPE_ETHDEV) 233 ev.mbuf = ssovf_octeontx_wqe_to_pkt(get_work1, 234 (ev.event >> 20) & 0x7F); 235 else 236 ev.u64 = get_work1; 237 238 if (fn != NULL && ev.u64 != 0) 239 fn(arg, ev); 240 } 241 } 242 243 void 244 ssows_reset(struct ssows *ws) 245 { 246 uint64_t tag; 247 uint64_t pend_tag; 248 uint8_t pend_tt; 249 uint8_t tt; 250 251 tag = ssovf_read64(ws->base + SSOW_VHWS_TAG); 252 pend_tag = ssovf_read64(ws->base + SSOW_VHWS_PENDTAG); 253 254 if (pend_tag & (1ULL << 63)) { /* Tagswitch pending */ 255 pend_tt = (pend_tag >> 32) & 0x3; 256 if (pend_tt == SSO_SYNC_ORDERED || pend_tt == SSO_SYNC_ATOMIC) 257 ssows_desched(ws); 258 } else { 259 tt = (tag >> 32) & 0x3; 260 if (tt == SSO_SYNC_ORDERED || tt == SSO_SYNC_ATOMIC) 261 ssows_swtag_untag(ws); 262 } 263 } 264 265 uint16_t 266 sso_event_tx_adapter_enqueue(void *port, 267 struct rte_event ev[], uint16_t nb_events) 268 { 269 uint16_t port_id; 270 uint16_t queue_id; 271 struct rte_mbuf *m; 272 struct rte_eth_dev *ethdev; 273 struct ssows *ws = port; 274 struct octeontx_txq *txq; 275 octeontx_dq_t *dq; 276 277 RTE_SET_USED(nb_events); 278 switch (ev->sched_type) { 279 case SSO_SYNC_ORDERED: 280 ssows_swtag_norm(ws, ev->event, SSO_SYNC_ATOMIC); 281 rte_cio_wmb(); 282 ssows_swtag_wait(ws); 283 break; 284 case SSO_SYNC_UNTAGGED: 285 ssows_swtag_full(ws, ev->u64, ev->event, SSO_SYNC_ATOMIC, 286 ev->queue_id); 287 rte_cio_wmb(); 288 ssows_swtag_wait(ws); 289 break; 290 case SSO_SYNC_ATOMIC: 291 rte_cio_wmb(); 292 break; 293 } 294 295 m = ev[0].mbuf; 296 port_id = m->port; 297 queue_id = rte_event_eth_tx_adapter_txq_get(m); 298 ethdev = &rte_eth_devices[port_id]; 299 txq = ethdev->data->tx_queues[queue_id]; 300 dq = &txq->dq; 301 302 if (__octeontx_xmit_pkts(dq->lmtline_va, dq->ioreg_va, dq->fc_status_va, 303 m) < 0) 304 return 0; 305 306 return 1; 307 } 308