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