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