drivers: use SPDX tag for Cavium copyright files
[dpdk.git] / 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 }