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 #define R(name, f1, f0, flags) \ 95 static uint16_t __rte_noinline __rte_hot \ 96 ssows_deq_ ##name(void *port, struct rte_event *ev, uint64_t timeout_ticks) \ 97 { \ 98 struct ssows *ws = port; \ 99 \ 100 RTE_SET_USED(timeout_ticks); \ 101 \ 102 if (ws->swtag_req) { \ 103 ws->swtag_req = 0; \ 104 ssows_swtag_wait(ws); \ 105 return 1; \ 106 } else { \ 107 return ssows_get_work(ws, ev, flags); \ 108 } \ 109 } \ 110 \ 111 static uint16_t __rte_hot \ 112 ssows_deq_burst_ ##name(void *port, struct rte_event ev[], \ 113 uint16_t nb_events, uint64_t timeout_ticks) \ 114 { \ 115 RTE_SET_USED(nb_events); \ 116 \ 117 return ssows_deq_ ##name(port, ev, timeout_ticks); \ 118 } \ 119 \ 120 static uint16_t __rte_hot \ 121 ssows_deq_timeout_ ##name(void *port, struct rte_event *ev, \ 122 uint64_t timeout_ticks) \ 123 { \ 124 struct ssows *ws = port; \ 125 uint64_t iter; \ 126 uint16_t ret = 1; \ 127 \ 128 if (ws->swtag_req) { \ 129 ws->swtag_req = 0; \ 130 ssows_swtag_wait(ws); \ 131 } else { \ 132 ret = ssows_get_work(ws, ev, flags); \ 133 for (iter = 1; iter < timeout_ticks && (ret == 0); iter++) \ 134 ret = ssows_get_work(ws, ev, flags); \ 135 } \ 136 return ret; \ 137 } \ 138 \ 139 static uint16_t __rte_hot \ 140 ssows_deq_timeout_burst_ ##name(void *port, struct rte_event ev[], \ 141 uint16_t nb_events, uint64_t timeout_ticks) \ 142 { \ 143 RTE_SET_USED(nb_events); \ 144 \ 145 return ssows_deq_timeout_ ##name(port, ev, timeout_ticks); \ 146 } 147 148 SSO_RX_ADPTR_ENQ_FASTPATH_FUNC 149 #undef R 150 151 __rte_always_inline uint16_t __rte_hot 152 ssows_enq(void *port, const struct rte_event *ev) 153 { 154 struct ssows *ws = port; 155 uint16_t ret = 1; 156 157 switch (ev->op) { 158 case RTE_EVENT_OP_NEW: 159 rte_smp_wmb(); 160 ssows_new_event(ws, ev); 161 break; 162 case RTE_EVENT_OP_FORWARD: 163 ssows_forward_event(ws, ev); 164 break; 165 case RTE_EVENT_OP_RELEASE: 166 ssows_release_event(ws); 167 break; 168 default: 169 ret = 0; 170 } 171 return ret; 172 } 173 174 uint16_t __rte_hot 175 ssows_enq_burst(void *port, const struct rte_event ev[], uint16_t nb_events) 176 { 177 RTE_SET_USED(nb_events); 178 return ssows_enq(port, ev); 179 } 180 181 uint16_t __rte_hot 182 ssows_enq_new_burst(void *port, const struct rte_event ev[], uint16_t nb_events) 183 { 184 uint16_t i; 185 struct ssows *ws = port; 186 187 rte_smp_wmb(); 188 for (i = 0; i < nb_events; i++) 189 ssows_new_event(ws, &ev[i]); 190 191 return nb_events; 192 } 193 194 uint16_t __rte_hot 195 ssows_enq_fwd_burst(void *port, const struct rte_event ev[], uint16_t nb_events) 196 { 197 struct ssows *ws = port; 198 RTE_SET_USED(nb_events); 199 200 ssows_forward_event(ws, ev); 201 202 return 1; 203 } 204 205 void 206 ssows_flush_events(struct ssows *ws, uint8_t queue_id, 207 ssows_handle_event_t fn, void *arg) 208 { 209 uint32_t reg_off; 210 struct rte_event ev; 211 uint64_t enable, aq_cnt = 1, cq_ds_cnt = 1; 212 uint64_t get_work0, get_work1; 213 uint64_t sched_type_queue; 214 uint8_t *base = ssovf_bar(OCTEONTX_SSO_GROUP, queue_id, 0); 215 216 enable = ssovf_read64(base + SSO_VHGRP_QCTL); 217 if (!enable) 218 return; 219 220 reg_off = SSOW_VHWS_OP_GET_WORK0; 221 reg_off |= 1 << 17; /* Grouped */ 222 reg_off |= 1 << 16; /* WAIT */ 223 reg_off |= queue_id << 4; /* INDEX_GGRP_MASK(group number) */ 224 while (aq_cnt || cq_ds_cnt) { 225 aq_cnt = ssovf_read64(base + SSO_VHGRP_AQ_CNT); 226 cq_ds_cnt = ssovf_read64(base + SSO_VHGRP_INT_CNT); 227 /* Extract cq and ds count */ 228 cq_ds_cnt &= 0x1FFF1FFF0000; 229 230 ssovf_load_pair(get_work0, get_work1, ws->base + reg_off); 231 232 sched_type_queue = (get_work0 >> 32) & 0xfff; 233 ws->cur_tt = sched_type_queue & 0x3; 234 ws->cur_grp = sched_type_queue >> 2; 235 sched_type_queue = sched_type_queue << 38; 236 ev.event = sched_type_queue | (get_work0 & 0xffffffff); 237 if (get_work1 && ev.event_type == RTE_EVENT_TYPE_ETHDEV) 238 ev.mbuf = ssovf_octeontx_wqe_to_pkt(get_work1, 239 (ev.event >> 20) & 0x7F, 240 OCCTX_RX_OFFLOAD_NONE | 241 OCCTX_RX_MULTI_SEG_F); 242 else 243 ev.u64 = get_work1; 244 245 if (fn != NULL && ev.u64 != 0) 246 fn(arg, ev); 247 } 248 } 249 250 void 251 ssows_reset(struct ssows *ws) 252 { 253 uint64_t tag; 254 uint64_t pend_tag; 255 uint8_t pend_tt; 256 uint8_t tt; 257 258 tag = ssovf_read64(ws->base + SSOW_VHWS_TAG); 259 pend_tag = ssovf_read64(ws->base + SSOW_VHWS_PENDTAG); 260 261 if (pend_tag & (1ULL << 63)) { /* Tagswitch pending */ 262 pend_tt = (pend_tag >> 32) & 0x3; 263 if (pend_tt == SSO_SYNC_ORDERED || pend_tt == SSO_SYNC_ATOMIC) 264 ssows_desched(ws); 265 } else { 266 tt = (tag >> 32) & 0x3; 267 if (tt == SSO_SYNC_ORDERED || tt == SSO_SYNC_ATOMIC) 268 ssows_swtag_untag(ws); 269 } 270 } 271 272 static __rte_always_inline uint16_t 273 __sso_event_tx_adapter_enqueue(void *port, struct rte_event ev[], 274 uint16_t nb_events, uint64_t *cmd, 275 const uint16_t flag) 276 { 277 uint16_t port_id; 278 uint16_t queue_id; 279 struct rte_mbuf *m; 280 struct rte_eth_dev *ethdev; 281 struct ssows *ws = port; 282 struct octeontx_txq *txq; 283 284 switch (ev->sched_type) { 285 case SSO_SYNC_ORDERED: 286 ssows_swtag_norm(ws, ev->event, SSO_SYNC_ATOMIC); 287 rte_cio_wmb(); 288 ssows_swtag_wait(ws); 289 break; 290 case SSO_SYNC_UNTAGGED: 291 ssows_swtag_full(ws, ev->u64, ev->event, SSO_SYNC_ATOMIC, 292 ev->queue_id); 293 rte_cio_wmb(); 294 ssows_swtag_wait(ws); 295 break; 296 case SSO_SYNC_ATOMIC: 297 rte_cio_wmb(); 298 break; 299 } 300 301 m = ev[0].mbuf; 302 port_id = m->port; 303 queue_id = rte_event_eth_tx_adapter_txq_get(m); 304 ethdev = &rte_eth_devices[port_id]; 305 txq = ethdev->data->tx_queues[queue_id]; 306 307 return __octeontx_xmit_pkts(txq, &m, nb_events, cmd, flag); 308 } 309 310 #define T(name, f3, f2, f1, f0, sz, flags) \ 311 static uint16_t __rte_noinline __rte_hot \ 312 sso_event_tx_adapter_enqueue_ ## name(void *port, struct rte_event ev[], \ 313 uint16_t nb_events) \ 314 { \ 315 uint64_t cmd[sz]; \ 316 return __sso_event_tx_adapter_enqueue(port, ev, nb_events, cmd, \ 317 flags); \ 318 } 319 320 SSO_TX_ADPTR_ENQ_FASTPATH_FUNC 321 #undef T 322 323 void 324 ssovf_fastpath_fns_set(struct rte_eventdev *dev) 325 { 326 struct ssovf_evdev *edev = ssovf_pmd_priv(dev); 327 328 dev->enqueue = ssows_enq; 329 dev->enqueue_burst = ssows_enq_burst; 330 dev->enqueue_new_burst = ssows_enq_new_burst; 331 dev->enqueue_forward_burst = ssows_enq_fwd_burst; 332 333 const event_tx_adapter_enqueue ssow_txa_enqueue[2][2][2][2] = { 334 #define T(name, f3, f2, f1, f0, sz, flags) \ 335 [f3][f2][f1][f0] = sso_event_tx_adapter_enqueue_ ##name, 336 337 SSO_TX_ADPTR_ENQ_FASTPATH_FUNC 338 #undef T 339 }; 340 341 dev->txa_enqueue = ssow_txa_enqueue 342 [!!(edev->tx_offload_flags & OCCTX_TX_OFFLOAD_MBUF_NOFF_F)] 343 [0] 344 [0] 345 [!!(edev->tx_offload_flags & OCCTX_TX_MULTI_SEG_F)]; 346 347 dev->txa_enqueue_same_dest = dev->txa_enqueue; 348 349 /* Assigning dequeue func pointers */ 350 const event_dequeue_t ssow_deq[2][2] = { 351 #define R(name, f1, f0, flags) \ 352 [f1][f0] = ssows_deq_ ##name, 353 354 SSO_RX_ADPTR_ENQ_FASTPATH_FUNC 355 #undef R 356 }; 357 358 dev->dequeue = ssow_deq 359 [!!(edev->rx_offload_flags & OCCTX_RX_VLAN_FLTR_F)] 360 [!!(edev->rx_offload_flags & OCCTX_RX_MULTI_SEG_F)]; 361 362 const event_dequeue_burst_t ssow_deq_burst[2][2] = { 363 #define R(name, f1, f0, flags) \ 364 [f1][f0] = ssows_deq_burst_ ##name, 365 366 SSO_RX_ADPTR_ENQ_FASTPATH_FUNC 367 #undef R 368 }; 369 370 dev->dequeue_burst = ssow_deq_burst 371 [!!(edev->rx_offload_flags & OCCTX_RX_VLAN_FLTR_F)] 372 [!!(edev->rx_offload_flags & OCCTX_RX_MULTI_SEG_F)]; 373 374 if (edev->is_timeout_deq) { 375 const event_dequeue_t ssow_deq_timeout[2][2] = { 376 #define R(name, f1, f0, flags) \ 377 [f1][f0] = ssows_deq_timeout_ ##name, 378 379 SSO_RX_ADPTR_ENQ_FASTPATH_FUNC 380 #undef R 381 }; 382 383 dev->dequeue = ssow_deq_timeout 384 [!!(edev->rx_offload_flags & OCCTX_RX_VLAN_FLTR_F)] 385 [!!(edev->rx_offload_flags & OCCTX_RX_MULTI_SEG_F)]; 386 387 const event_dequeue_burst_t ssow_deq_timeout_burst[2][2] = { 388 #define R(name, f1, f0, flags) \ 389 [f1][f0] = ssows_deq_timeout_burst_ ##name, 390 391 SSO_RX_ADPTR_ENQ_FASTPATH_FUNC 392 #undef R 393 }; 394 395 dev->dequeue_burst = ssow_deq_timeout_burst 396 [!!(edev->rx_offload_flags & OCCTX_RX_VLAN_FLTR_F)] 397 [!!(edev->rx_offload_flags & OCCTX_RX_MULTI_SEG_F)]; 398 } 399 } 400