octeon_pko.c revision 1.2
1 /* $NetBSD: octeon_pko.c,v 1.2 2020/05/31 06:27:06 simonb 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_pko.c,v 1.2 2020/05/31 06:27:06 simonb Exp $"); 31 32 #include "opt_octeon.h" 33 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/malloc.h> 37 #include <mips/locore.h> 38 #include <mips/cavium/octeonvar.h> 39 #include <mips/cavium/dev/octeon_faureg.h> 40 #include <mips/cavium/dev/octeon_fpavar.h> 41 #include <mips/cavium/dev/octeon_pkoreg.h> 42 #include <mips/cavium/dev/octeon_pkovar.h> 43 44 static inline void octpko_op_store(uint64_t, uint64_t); 45 46 #ifdef CNMAC_DEBUG 47 void octpko_intr_evcnt_attach(struct octpko_softc *); 48 void octpko_intr_rml(void *); 49 #endif 50 51 #define _PKO_RD8(sc, off) \ 52 bus_space_read_8((sc)->sc_regt, (sc)->sc_regh, (off)) 53 #define _PKO_WR8(sc, off, v) \ 54 bus_space_write_8((sc)->sc_regt, (sc)->sc_regh, (off), (v)) 55 56 #ifdef CNMAC_DEBUG 57 struct octpko_softc *__octpko_softc; 58 #endif 59 60 /* ----- gloal functions */ 61 62 /* XXX */ 63 void 64 octpko_init(struct octpko_attach_args *aa, struct octpko_softc **rsc) 65 { 66 struct octpko_softc *sc; 67 int status; 68 69 sc = malloc(sizeof(*sc), M_DEVBUF, M_WAITOK | M_ZERO); 70 if (sc == NULL) 71 panic("can't allocate memory: %s", __func__); 72 73 sc->sc_port = aa->aa_port; 74 sc->sc_regt = aa->aa_regt; 75 sc->sc_cmdptr = aa->aa_cmdptr; 76 sc->sc_cmd_buf_pool = aa->aa_cmd_buf_pool; 77 sc->sc_cmd_buf_size = aa->aa_cmd_buf_size; 78 79 status = bus_space_map(sc->sc_regt, PKO_BASE, PKO_SIZE, 0, 80 &sc->sc_regh); 81 if (status != 0) 82 panic("can't map %s space", "pko register"); 83 84 *rsc = sc; 85 86 #ifdef CNMAC_DEBUG 87 octpko_intr_evcnt_attach(sc); 88 __octpko_softc = sc; 89 #endif 90 } 91 92 int 93 octpko_enable(struct octpko_softc *sc) 94 { 95 uint64_t reg_flags; 96 97 reg_flags = _PKO_RD8(sc, PKO_REG_FLAGS_OFFSET); 98 /* PKO_REG_FLAGS_RESET=0 */ 99 /* PKO_REG_FLAGS_STORE_BE=0 */ 100 SET(reg_flags, PKO_REG_FLAGS_ENA_DWB); 101 SET(reg_flags, PKO_REG_FLAGS_ENA_PKO); 102 /* XXX */ 103 OCTEON_SYNCW; 104 _PKO_WR8(sc, PKO_REG_FLAGS_OFFSET, reg_flags); 105 106 return 0; 107 } 108 109 #if 0 110 void 111 octpko_reset(octpko_softc *sc) 112 { 113 uint64_t reg_flags; 114 115 reg_flags = _PKO_RD8(sc, PKO_REG_FLAGS_OFFSET); 116 SET(reg_flags, PKO_REG_FLAGS_RESET); 117 _PKO_WR8(sc, PKO_REG_FLAGS_OFFSET, reg_flags); 118 } 119 #endif 120 121 void 122 octpko_config(struct octpko_softc *sc) 123 { 124 uint64_t reg_cmd_buf = 0; 125 126 SET(reg_cmd_buf, (sc->sc_cmd_buf_pool << 20) & PKO_REG_CMD_BUF_POOL); 127 SET(reg_cmd_buf, sc->sc_cmd_buf_size & PKO_REG_CMD_BUF_SIZE); 128 _PKO_WR8(sc, PKO_REG_CMD_BUF_OFFSET, reg_cmd_buf); 129 130 #ifdef CNMAC_DEBUG 131 octpko_int_enable(sc, 1); 132 #endif 133 } 134 135 int 136 octpko_port_enable(struct octpko_softc *sc, int enable) 137 { 138 uint64_t reg_read_idx; 139 uint64_t mem_queue_qos; 140 141 reg_read_idx = 0; 142 SET(reg_read_idx, sc->sc_port & PKO_REG_READ_IDX_IDX); 143 144 /* XXX assume one queue maped one port */ 145 /* Enable packet output by enabling all queues for this port */ 146 mem_queue_qos = 0; 147 SET(mem_queue_qos, ((uint64_t)sc->sc_port << 7) & PKO_MEM_QUEUE_QOS_PID); 148 SET(mem_queue_qos, sc->sc_port & PKO_MEM_QUEUE_QOS_QID); 149 SET(mem_queue_qos, ((enable ? 0xffULL : 0x00ULL) << 53) & 150 PKO_MEM_QUEUE_QOS_QOS_MASK); 151 152 _PKO_WR8(sc, PKO_REG_READ_IDX_OFFSET, reg_read_idx); 153 _PKO_WR8(sc, PKO_MEM_QUEUE_QOS_OFFSET, mem_queue_qos); 154 155 return 0; 156 } 157 158 static int pko_queue_map_init[32]; 159 160 int 161 octpko_port_config(struct octpko_softc *sc) 162 { 163 paddr_t buf_ptr = 0; 164 uint64_t mem_queue_ptrs; 165 166 KASSERT(sc->sc_port < 32); 167 168 buf_ptr = octfpa_load(FPA_COMMAND_BUFFER_POOL); 169 if (buf_ptr == 0) 170 return 1; 171 172 KASSERT(buf_ptr != 0); 173 174 /* assume one queue maped one port */ 175 mem_queue_ptrs = 0; 176 SET(mem_queue_ptrs, PKO_MEM_QUEUE_PTRS_TAIL); 177 SET(mem_queue_ptrs, ((uint64_t)0 << 13) & PKO_MEM_QUEUE_PTRS_IDX); 178 SET(mem_queue_ptrs, ((uint64_t)sc->sc_port << 7) & PKO_MEM_QUEUE_PTRS_PID); 179 SET(mem_queue_ptrs, sc->sc_port & PKO_MEM_QUEUE_PTRS_QID); 180 SET(mem_queue_ptrs, ((uint64_t)0xff << 53) & PKO_MEM_QUEUE_PTRS_QOS_MASK); 181 SET(mem_queue_ptrs, ((uint64_t)buf_ptr << 17) & PKO_MEM_QUEUE_PTRS_BUF_PTR); 182 OCTEON_SYNCW; 183 _PKO_WR8(sc, PKO_MEM_QUEUE_PTRS_OFFSET, mem_queue_ptrs); 184 185 /* 186 * Set initial command buffer address and index 187 * for queue. 188 */ 189 sc->sc_cmdptr->cmdptr = (uint64_t)buf_ptr; 190 sc->sc_cmdptr->cmdptr_idx = 0; 191 192 pko_queue_map_init[sc->sc_port] = 1; 193 194 return 0; 195 } 196 197 #ifdef CNMAC_DEBUG 198 int octpko_intr_rml_verbose; 199 struct evcnt octpko_intr_evcnt; 200 201 static const struct octeon_evcnt_entry octpko_intr_evcnt_entries[] = { 202 #define _ENTRY(name, type, parent, descr) \ 203 OCTEON_EVCNT_ENTRY(struct octpko_softc, name, type, parent, descr) 204 _ENTRY(pkoerrdbell, MISC, NULL, "pko doorbell overflow"), 205 _ENTRY(pkoerrparity, MISC, NULL, "pko parity error") 206 #undef _ENTRY 207 }; 208 209 void 210 octpko_intr_evcnt_attach(struct octpko_softc *sc) 211 { 212 OCTEON_EVCNT_ATTACH_EVCNTS(sc, octpko_intr_evcnt_entries, "pko0"); 213 } 214 215 void 216 octpko_intr_rml(void *arg) 217 { 218 struct octpko_softc *sc; 219 uint64_t reg; 220 221 octpko_intr_evcnt.ev_count++; 222 sc = __octpko_softc; 223 KASSERT(sc != NULL); 224 reg = octpko_int_summary(sc); 225 if (octpko_intr_rml_verbose) 226 printf("%s: PKO_REG_ERROR=0x%016" PRIx64 "\n", __func__, reg); 227 if (reg & PKO_REG_ERROR_DOORBELL) 228 OCTEON_EVCNT_INC(sc, pkoerrdbell); 229 if (reg & PKO_REG_ERROR_PARITY) 230 OCTEON_EVCNT_INC(sc, pkoerrparity); 231 } 232 233 void 234 octpko_int_enable(struct octpko_softc *sc, int enable) 235 { 236 uint64_t pko_int_xxx = 0; 237 238 pko_int_xxx = PKO_REG_ERROR_DOORBELL | PKO_REG_ERROR_PARITY; 239 _PKO_WR8(sc, PKO_REG_ERROR_OFFSET, pko_int_xxx); 240 _PKO_WR8(sc, PKO_REG_INT_MASK_OFFSET, enable ? pko_int_xxx : 0); 241 } 242 243 uint64_t 244 octpko_int_summary(struct octpko_softc *sc) 245 { 246 uint64_t summary; 247 248 summary = _PKO_RD8(sc, PKO_REG_ERROR_OFFSET); 249 _PKO_WR8(sc, PKO_REG_ERROR_OFFSET, summary); 250 return summary; 251 } 252 #endif 253
Indexes created Thu Oct 02 14:10:14 GMT 2025