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_id)
  28 {
  29         struct rte_mbuf *mbuf;
  30         octtx_wqe_t *wqe = (octtx_wqe_t *)(uintptr_t)work;
  31         rte_prefetch_non_temporal(wqe);
  32
  33         /* Get mbuf from wqe */
  34         mbuf = (struct rte_mbuf *)((uintptr_t)wqe -
  35                         OCTTX_PACKET_WQE_SKIP);
  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 = port_id;
  44         rte_mbuf_refcnt_set(mbuf, 1);
  45         return mbuf;
  46 }
  47
  48 static __rte_always_inline uint16_t
  49 ssows_get_work(struct ssows *ws, struct rte_event *ev)
  50 {
  51         uint64_t get_work0, get_work1;
  52         uint64_t sched_type_queue;
  53
  54         ssovf_load_pair(get_work0, get_work1, ws->getwork);
  55
  56         sched_type_queue = (get_work0 >> 32) & 0xfff;
  57         ws->cur_tt = sched_type_queue & 0x3;
  58         ws->cur_grp = sched_type_queue >> 2;
  59         sched_type_queue = sched_type_queue << 38;
  60         ev->event = sched_type_queue | (get_work0 & 0xffffffff);
  61         if (get_work1 && ev->event_type == RTE_EVENT_TYPE_ETHDEV) {
  62                 ev->mbuf = ssovf_octeontx_wqe_to_pkt(get_work1,
  63                                 (ev->event >> 20) & 0xF);
  64         } else {
  65                 ev->u64 = get_work1;
  66         }
  67
  68         return !!get_work1;
  69 }
  70
  71 static __rte_always_inline void
  72 ssows_add_work(struct ssows *ws, const uint64_t event_ptr, const uint32_t tag,
  73                         const uint8_t new_tt, const uint8_t grp)
  74 {
  75         uint64_t add_work0;
  76
  77         add_work0 = tag | ((uint64_t)(new_tt) << 32);
  78         ssovf_store_pair(add_work0, event_ptr, ws->grps[grp]);
  79 }
  80
  81 static __rte_always_inline void
  82 ssows_swtag_full(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 swtag_full0;
  86
  87         swtag_full0 = tag | ((uint64_t)(new_tt & 0x3) << 32) |
  88                                 ((uint64_t)grp << 34);
  89         ssovf_store_pair(swtag_full0, event_ptr, (ws->base +
  90                                 SSOW_VHWS_OP_SWTAG_FULL0));
  91 }
  92
  93 static __rte_always_inline void
  94 ssows_swtag_desched(struct ssows *ws, uint32_t tag, uint8_t new_tt, uint8_t grp)
  95 {
  96         uint64_t val;
  97
  98         val = tag | ((uint64_t)(new_tt & 0x3) << 32) | ((uint64_t)grp << 34);
  99         ssovf_write64(val, ws->base + SSOW_VHWS_OP_SWTAG_DESCHED);
 100 }
 101
 102 static __rte_always_inline void
 103 ssows_swtag_norm(struct ssows *ws, uint32_t tag, uint8_t new_tt)
 104 {
 105         uint64_t val;
 106
 107         val = tag | ((uint64_t)(new_tt & 0x3) << 32);
 108         ssovf_write64(val, ws->base + SSOW_VHWS_OP_SWTAG_NORM);
 109 }
 110
 111 static __rte_always_inline void
 112 ssows_swtag_untag(struct ssows *ws)
 113 {
 114         ssovf_write64(0, ws->base + SSOW_VHWS_OP_SWTAG_UNTAG);
 115         ws->cur_tt = SSO_SYNC_UNTAGGED;
 116 }
 117
 118 static __rte_always_inline void
 119 ssows_upd_wqp(struct ssows *ws, uint8_t grp, uint64_t event_ptr)
 120 {
 121         ssovf_store_pair((uint64_t)grp << 34, event_ptr, (ws->base +
 122                                 SSOW_VHWS_OP_UPD_WQP_GRP0));
 123 }
 124
 125 static __rte_always_inline void
 126 ssows_desched(struct ssows *ws)
 127 {
 128         ssovf_write64(0, ws->base + SSOW_VHWS_OP_DESCHED);
 129 }
 130
 131 static __rte_always_inline void
 132 ssows_swtag_wait(struct ssows *ws)
 133 {
 134         /* Wait for the SWTAG/SWTAG_FULL operation */
 135         while (ssovf_read64(ws->base + SSOW_VHWS_SWTP))
 136         ;
 137 }