1 /* $NetBSD: octeon_ipd.c,v 1.8 2021/01/04 17:22:59 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 2007 Internet Initiative Japan, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: octeon_ipd.c,v 1.8 2021/01/04 17:22:59 thorpej Exp $"); 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/kmem.h> 35 #include <sys/mbuf.h> 36 #include <mips/locore.h> 37 #include <mips/cavium/octeonvar.h> 38 #include <mips/cavium/dev/octeon_ciureg.h> 39 #include <mips/cavium/dev/octeon_fpareg.h> 40 #include <mips/cavium/dev/octeon_fpavar.h> 41 #include <mips/cavium/dev/octeon_pipreg.h> 42 #include <mips/cavium/dev/octeon_ipdreg.h> 43 #include <mips/cavium/dev/octeon_ipdvar.h> 44 45 #include <netinet/in.h> 46 #include <netinet/in_systm.h> 47 #include <netinet/ip.h> 48 49 #define IP_OFFSET(data, word2) \ 50 ((uintptr_t)(data) + (uintptr_t)__SHIFTOUT(word2, PIP_WQE_WORD2_IP_OFFSET)) 51 52 /* XXX */ 53 void 54 octipd_init(struct octipd_attach_args *aa, struct octipd_softc **rsc) 55 { 56 struct octipd_softc *sc; 57 int status; 58 59 sc = kmem_zalloc(sizeof(*sc), KM_SLEEP); 60 sc->sc_port = aa->aa_port; 61 sc->sc_regt = aa->aa_regt; 62 sc->sc_first_mbuff_skip = aa->aa_first_mbuff_skip; 63 sc->sc_not_first_mbuff_skip = aa->aa_not_first_mbuff_skip; 64 65 status = bus_space_map(sc->sc_regt, IPD_BASE, IPD_SIZE, 0, 66 &sc->sc_regh); 67 if (status != 0) 68 panic("can't map %s space", "ipd register"); 69 70 *rsc = sc; 71 } 72 73 #define _IPD_RD8(sc, off) \ 74 bus_space_read_8((sc)->sc_regt, (sc)->sc_regh, (off)) 75 #define _IPD_WR8(sc, off, v) \ 76 bus_space_write_8((sc)->sc_regt, (sc)->sc_regh, (off), (v)) 77 78 int 79 octipd_enable(struct octipd_softc *sc) 80 { 81 uint64_t ctl_status; 82 83 ctl_status = _IPD_RD8(sc, IPD_CTL_STATUS_OFFSET); 84 SET(ctl_status, IPD_CTL_STATUS_IPD_EN); 85 _IPD_WR8(sc, IPD_CTL_STATUS_OFFSET, ctl_status); 86 87 return 0; 88 } 89 90 int 91 octipd_config(struct octipd_softc *sc) 92 { 93 uint64_t first_mbuff_skip; 94 uint64_t not_first_mbuff_skip; 95 uint64_t packet_mbuff_size; 96 uint64_t first_next_ptr_back; 97 uint64_t second_next_ptr_back; 98 uint64_t sqe_fpa_queue; 99 uint64_t ctl_status; 100 101 /* XXX XXX XXX */ 102 first_mbuff_skip = 0; 103 SET(first_mbuff_skip, (sc->sc_first_mbuff_skip / 8) & IPD_1ST_MBUFF_SKIP_SZ); 104 _IPD_WR8(sc, IPD_1ST_MBUFF_SKIP_OFFSET, first_mbuff_skip); 105 /* XXX XXX XXX */ 106 107 /* XXX XXX XXX */ 108 not_first_mbuff_skip = 0; 109 SET(not_first_mbuff_skip, (sc->sc_not_first_mbuff_skip / 8) & 110 IPD_NOT_1ST_MBUFF_SKIP_SZ); 111 _IPD_WR8(sc, IPD_NOT_1ST_MBUFF_SKIP_OFFSET, not_first_mbuff_skip); 112 /* XXX XXX XXX */ 113 114 packet_mbuff_size = 0; 115 SET(packet_mbuff_size, (FPA_RECV_PKT_POOL_SIZE / 8) & 116 IPD_PACKET_MBUFF_SIZE_MB_SIZE); 117 _IPD_WR8(sc, IPD_PACKET_MBUFF_SIZE_OFFSET, packet_mbuff_size); 118 119 first_next_ptr_back = 0; 120 SET(first_next_ptr_back, (sc->sc_first_mbuff_skip / 128) & IPD_1ST_NEXT_PTR_BACK_BACK); 121 _IPD_WR8(sc, IPD_1ST_NEXT_PTR_BACK_OFFSET, first_next_ptr_back); 122 123 second_next_ptr_back = 0; 124 SET(second_next_ptr_back, (sc->sc_not_first_mbuff_skip / 128) & 125 IPD_2ND_NEXT_PTR_BACK_BACK); 126 _IPD_WR8(sc, IPD_2ND_NEXT_PTR_BACK_OFFSET, second_next_ptr_back); 127 128 sqe_fpa_queue = 0; 129 SET(sqe_fpa_queue, FPA_WQE_POOL & IPD_WQE_FPA_QUEUE_WQE_QUE); 130 _IPD_WR8(sc, IPD_WQE_FPA_QUEUE_OFFSET, sqe_fpa_queue); 131 132 ctl_status = _IPD_RD8(sc, IPD_CTL_STATUS_OFFSET); 133 CLR(ctl_status, IPD_CTL_STATUS_OPC_MODE); 134 SET(ctl_status, 135 __SHIFTIN(IPD_CTL_STATUS_OPC_MODE_ALL, IPD_CTL_STATUS_OPC_MODE)); 136 SET(ctl_status, IPD_CTL_STATUS_PBP_EN); 137 138 /* 139 * XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 140 * from SDK 141 * SET(ctl_status, IPD_CTL_STATUS_LEN_M8); 142 * XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 143 */ 144 145 _IPD_WR8(sc, IPD_CTL_STATUS_OFFSET, ctl_status); 146 147 return 0; 148 } 149 150 /* 151 * octeon work queue entry offload 152 * L3 error & L4 error 153 */ 154 void 155 octipd_offload(uint64_t word2, void *data, int *rcflags) 156 { 157 int cflags; 158 159 if (ISSET(word2, PIP_WQE_WORD2_IP_NI)) 160 return; 161 162 cflags = 0; 163 164 if (!ISSET(word2, PIP_WQE_WORD2_IP_V6)) 165 SET(cflags, M_CSUM_IPv4); 166 167 if (ISSET(word2, PIP_WQE_WORD2_IP_TU)) { 168 SET(cflags, 169 !ISSET(word2, PIP_WQE_WORD2_IP_V6) ? 170 (M_CSUM_TCPv4 | M_CSUM_UDPv4) : 171 (M_CSUM_TCPv6 | M_CSUM_UDPv6)); 172 } 173 174 /* check L3 (IP) error */ 175 if (ISSET(word2, PIP_WQE_WORD2_IP_IE)) { 176 struct ip *ip; 177 178 switch (word2 & PIP_WQE_WORD2_IP_OPECODE) { 179 case IPD_WQE_L3_V4_CSUM_ERR: 180 /* CN31XX Pass 1.1 Errata */ 181 ip = (struct ip *)(IP_OFFSET(data, word2)); 182 if (ip->ip_hl == 5) 183 SET(cflags, M_CSUM_IPv4_BAD); 184 break; 185 default: 186 break; 187 } 188 } 189 190 /* check L4 (UDP / TCP) error */ 191 if (ISSET(word2, PIP_WQE_WORD2_IP_LE)) { 192 switch (word2 & PIP_WQE_WORD2_IP_OPECODE) { 193 case IPD_WQE_L4_CSUM_ERR: 194 SET(cflags, M_CSUM_TCP_UDP_BAD); 195 break; 196 default: 197 break; 198 } 199 } 200 201 *rcflags = cflags; 202 } 203 204 void 205 octipd_sub_port_fcs(struct octipd_softc *sc, int enable) 206 { 207 uint64_t sub_port_fcs; 208 209 sub_port_fcs = _IPD_RD8(sc, IPD_SUB_PORT_FCS_OFFSET); 210 if (enable == 0) 211 CLR(sub_port_fcs, __BIT(sc->sc_port)); 212 else 213 SET(sub_port_fcs, __BIT(sc->sc_port)); 214 _IPD_WR8(sc, IPD_SUB_PORT_FCS_OFFSET, sub_port_fcs); 215 } 216
Indexes created Tue Sep 23 14:10:03 GMT 2025