drivers/event/octeontx2/otx2_worker_dual.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(C) 2019 Marvell International Ltd.
   3  */
   4
   5 #ifndef __OTX2_WORKER_DUAL_H__
   6 #define __OTX2_WORKER_DUAL_H__
   7
   8 #include <rte_branch_prediction.h>
   9 #include <rte_common.h>
  10
  11 #include <otx2_common.h>
  12 #include "otx2_evdev.h"
  13
  14 /* SSO Operations */
  15 static __rte_always_inline uint16_t
  16 otx2_ssogws_dual_get_work(struct otx2_ssogws_state *ws,
  17                           struct otx2_ssogws_state *ws_pair,
  18                           struct rte_event *ev, const uint32_t flags,
  19                           const void * const lookup_mem)
  20 {
  21         const uint64_t set_gw = BIT_ULL(16) | 1;
  22         union otx2_sso_event event;
  23         uint64_t get_work1;
  24         uint64_t mbuf;
  25
  26         if (flags & NIX_RX_OFFLOAD_PTYPE_F)
  27                 rte_prefetch_non_temporal(lookup_mem);
  28 #ifdef RTE_ARCH_ARM64
  29         asm volatile(
  30                         "        ldr %[tag], [%[tag_loc]]    \n"
  31                         "        ldr %[wqp], [%[wqp_loc]]    \n"
  32                         "        tbz %[tag], 63, done%=      \n"
  33                         "        sevl                        \n"
  34                         "rty%=:  wfe                         \n"
  35                         "        ldr %[tag], [%[tag_loc]]    \n"
  36                         "        ldr %[wqp], [%[wqp_loc]]    \n"
  37                         "        tbnz %[tag], 63, rty%=      \n"
  38                         "done%=: str %[gw], [%[pong]]        \n"
  39                         "        dmb ld                      \n"
  40                         "        prfm pldl1keep, [%[wqp], #8]\n"
  41                         "        sub %[mbuf], %[wqp], #0x80  \n"
  42                         "        prfm pldl1keep, [%[mbuf]]   \n"
  43                         : [tag] "=&r" (event.get_work0),
  44                           [wqp] "=&r" (get_work1),
  45                           [mbuf] "=&r" (mbuf)
  46                         : [tag_loc] "r" (ws->tag_op),
  47                           [wqp_loc] "r" (ws->wqp_op),
  48                           [gw] "r" (set_gw),
  49                           [pong] "r" (ws_pair->getwrk_op)
  50                         );
  51 #else
  52         event.get_work0 = otx2_read64(ws->tag_op);
  53         while ((BIT_ULL(63)) & event.get_work0)
  54                 event.get_work0 = otx2_read64(ws->tag_op);
  55         get_work1 = otx2_read64(ws->wqp_op);
  56         otx2_write64(set_gw, ws_pair->getwrk_op);
  57
  58         rte_prefetch0((const void *)get_work1);
  59         mbuf = (uint64_t)((char *)get_work1 - sizeof(struct rte_mbuf));
  60         rte_prefetch0((const void *)mbuf);
  61 #endif
  62         event.get_work0 = (event.get_work0 & (0x3ull << 32)) << 6 |
  63                 (event.get_work0 & (0x3FFull << 36)) << 4 |
  64                 (event.get_work0 & 0xffffffff);
  65         ws->cur_tt = event.sched_type;
  66         ws->cur_grp = event.queue_id;
  67
  68         if (event.sched_type != SSO_TT_EMPTY &&
  69             event.event_type == RTE_EVENT_TYPE_ETHDEV) {
  70                 otx2_wqe_to_mbuf(get_work1, mbuf, event.sub_event_type,
  71                                  (uint32_t) event.get_work0, flags, lookup_mem);
  72                 get_work1 = mbuf;
  73         }
  74
  75         ev->event = event.get_work0;
  76         ev->u64 = get_work1;
  77
  78         return !!get_work1;
  79 }
  80
  81 static __rte_always_inline void
  82 otx2_ssogws_dual_add_work(struct otx2_ssogws_dual *ws, const uint64_t event_ptr,
  83                           const uint32_t tag, const uint8_t new_tt,
  84                           const uint16_t grp)
  85 {
  86         uint64_t add_work0;
  87
  88         add_work0 = tag | ((uint64_t)(new_tt) << 32);
  89         otx2_store_pair(add_work0, event_ptr, ws->grps_base[grp]);
  90 }
  91
  92 #endif