drivers/event/octeontx/ssovf_worker.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2017 Cavium, Inc
   3  */
   4
   5 #include <rte_common.h>
   6 #include <rte_branch_prediction.h>
   7
   8 #include <octeontx_mbox.h>
   9
  10 #include "ssovf_evdev.h"
  11 #include "octeontx_rxtx.h"
  12
  13 enum {
  14         SSO_SYNC_ORDERED,
  15         SSO_SYNC_ATOMIC,
  16         SSO_SYNC_UNTAGGED,
  17         SSO_SYNC_EMPTY
  18 };
  19
  20 #ifndef __hot
  21 #define __hot   __attribute__((hot))
  22 #endif
  23
  24 /* SSO Operations */
  25
  26 static __rte_always_inline struct rte_mbuf *
  27 ssovf_octeontx_wqe_to_pkt(uint64_t work, uint16_t port_info)
  28 {
  29         struct rte_mbuf *mbuf;
  30         octtx_wqe_t *wqe = (octtx_wqe_t *)(uintptr_t)work;
  31
  32         /* Get mbuf from wqe */
  33         mbuf = (struct rte_mbuf *)((uintptr_t)wqe - OCTTX_PACKET_WQE_SKIP);
  34         rte_prefetch_non_temporal(mbuf);
  35         mbuf->packet_type =
  36                 ptype_table[wqe->s.w2.lcty][wqe->s.w2.lety][wqe->s.w2.lfty];
  37         mbuf->data_off = RTE_PTR_DIFF(wqe->s.w3.addr, mbuf->buf_addr);
  38         mbuf->pkt_len = wqe->s.w1.len;
  39         mbuf->data_len = mbuf->pkt_len;
  40         mbuf->nb_segs = 1;
  41         mbuf->ol_flags = 0;
  42         mbuf->port = rte_octeontx_pchan_map[port_info >> 4][port_info & 0xF];
  43         rte_mbuf_refcnt_set(mbuf, 1);
  44
  45         return mbuf;
  46 }
  47
  48 static __rte_always_inline void
  49 ssovf_octeontx_wqe_free(uint64_t work)
  50 {
  51         octtx_wqe_t *wqe = (octtx_wqe_t *)(uintptr_t)work;
  52         struct rte_mbuf *mbuf;
  53
  54         mbuf = (struct rte_mbuf *)((uintptr_t)wqe - OCTTX_PACKET_WQE_SKIP);
  55         rte_pktmbuf_free(mbuf);
  56 }
  57
  58 static __rte_always_inline uint16_t
  59 ssows_get_work(struct ssows *ws, struct rte_event *ev)
  60 {
  61         uint64_t get_work0, get_work1;
  62         uint64_t sched_type_queue;
  63
  64         ssovf_load_pair(get_work0, get_work1, ws->getwork);
  65
  66         sched_type_queue = (get_work0 >> 32) & 0xfff;
  67         ws->cur_tt = sched_type_queue & 0x3;
  68         ws->cur_grp = sched_type_queue >> 2;
  69         sched_type_queue = sched_type_queue << 38;
  70         ev->event = sched_type_queue | (get_work0 & 0xffffffff);
  71
  72         if (get_work1 && ev->event_type == RTE_EVENT_TYPE_ETHDEV) {
  73                 ev->mbuf = ssovf_octeontx_wqe_to_pkt(get_work1,
  74                                 (ev->event >> 20) & 0x7F);
  75         } else if (unlikely((get_work0 & 0xFFFFFFFF) == 0xFFFFFFFF)) {
  76                 ssovf_octeontx_wqe_free(get_work1);
  77                 return 0;
  78         } else {
  79                 ev->u64 = get_work1;
  80         }
  81
  82         return !!get_work1;
  83 }
  84
  85 static __rte_always_inline void
  86 ssows_add_work(struct ssows *ws, const uint64_t event_ptr, const uint32_t tag,
  87                         const uint8_t new_tt, const uint8_t grp)
  88 {
  89         uint64_t add_work0;
  90
  91         add_work0 = tag | ((uint64_t)(new_tt) << 32);
  92         ssovf_store_pair(add_work0, event_ptr, ws->grps[grp]);
  93 }
  94
  95 static __rte_always_inline void
  96 ssows_swtag_full(struct ssows *ws, const uint64_t event_ptr, const uint32_t tag,
  97                         const uint8_t new_tt, const uint8_t grp)
  98 {
  99         uint64_t swtag_full0;
 100
 101         swtag_full0 = tag | ((uint64_t)(new_tt & 0x3) << 32) |
 102                                 ((uint64_t)grp << 34);
 103         ssovf_store_pair(swtag_full0, event_ptr, (ws->base +
 104                                 SSOW_VHWS_OP_SWTAG_FULL0));
 105 }
 106
 107 static __rte_always_inline void
 108 ssows_swtag_desched(struct ssows *ws, uint32_t tag, uint8_t new_tt, uint8_t grp)
 109 {
 110         uint64_t val;
 111
 112         val = tag | ((uint64_t)(new_tt & 0x3) << 32) | ((uint64_t)grp << 34);
 113         ssovf_write64(val, ws->base + SSOW_VHWS_OP_SWTAG_DESCHED);
 114 }
 115
 116 static __rte_always_inline void
 117 ssows_swtag_norm(struct ssows *ws, uint32_t tag, uint8_t new_tt)
 118 {
 119         uint64_t val;
 120
 121         val = tag | ((uint64_t)(new_tt & 0x3) << 32);
 122         ssovf_write64(val, ws->base + SSOW_VHWS_OP_SWTAG_NORM);
 123 }
 124
 125 static __rte_always_inline void
 126 ssows_swtag_untag(struct ssows *ws)
 127 {
 128         ssovf_write64(0, ws->base + SSOW_VHWS_OP_SWTAG_UNTAG);
 129         ws->cur_tt = SSO_SYNC_UNTAGGED;
 130 }
 131
 132 static __rte_always_inline void
 133 ssows_upd_wqp(struct ssows *ws, uint8_t grp, uint64_t event_ptr)
 134 {
 135         ssovf_store_pair((uint64_t)grp << 34, event_ptr, (ws->base +
 136                                 SSOW_VHWS_OP_UPD_WQP_GRP0));
 137 }
 138
 139 static __rte_always_inline void
 140 ssows_desched(struct ssows *ws)
 141 {
 142         ssovf_write64(0, ws->base + SSOW_VHWS_OP_DESCHED);
 143 }
 144
 145 static __rte_always_inline void
 146 ssows_swtag_wait(struct ssows *ws)
 147 {
 148         /* Wait for the SWTAG/SWTAG_FULL operation */
 149         while (ssovf_read64(ws->base + SSOW_VHWS_SWTP))
 150         ;
 151 }