1 /*- 2 * Copyright (c) 2010-2011 Solarflare Communications, Inc. 3 * All rights reserved. 4 * 5 * This software was developed in part by Philip Paeps under contract for 6 * Solarflare Communications, Inc. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD$ 30 */ 31 32 #ifndef _SFXGE_H 33 #define _SFXGE_H 34 35 #include <sys/param.h> 36 #include <sys/kernel.h> 37 #include <sys/condvar.h> 38 #include <sys/socket.h> 39 #include <sys/sysctl.h> 40 #include <sys/sx.h> 41 #include <vm/uma.h> 42 43 #include <net/ethernet.h> 44 #include <net/if.h> 45 #include <net/if_media.h> 46 #include <net/if_types.h> 47 48 /* 49 * Backward-compatibility 50 */ 51 #ifndef CACHE_LINE_SIZE 52 /* This should be right on most machines the driver will be used on, and 53 * we needn't care too much about wasting a few KB per interface. 54 */ 55 #define CACHE_LINE_SIZE 128 56 #endif 57 #ifndef IFCAP_LINKSTATE 58 #define IFCAP_LINKSTATE 0 59 #endif 60 #ifndef IFCAP_VLAN_HWTSO 61 #define IFCAP_VLAN_HWTSO 0 62 #endif 63 #ifndef IFM_10G_T 64 #define IFM_10G_T IFM_UNKNOWN 65 #endif 66 #ifndef IFM_10G_KX4 67 #define IFM_10G_KX4 IFM_10G_CX4 68 #endif 69 #if __FreeBSD_version >= 800054 70 /* Networking core is multiqueue aware. We can manage our own TX 71 * queues and use m_pkthdr.flowid. 72 */ 73 #define SFXGE_HAVE_MQ 74 #endif 75 #if (__FreeBSD_version >= 800501 && __FreeBSD_version < 900000) || \ 76 __FreeBSD_version >= 900003 77 #define SFXGE_HAVE_DESCRIBE_INTR 78 #endif 79 #ifdef IFM_ETH_RXPAUSE 80 #define SFXGE_HAVE_PAUSE_MEDIAOPTS 81 #endif 82 #ifndef CTLTYPE_U64 83 #define CTLTYPE_U64 CTLTYPE_QUAD 84 #endif 85 86 #include "sfxge_rx.h" 87 #include "sfxge_tx.h" 88 89 #define SFXGE_IP_ALIGN 2 90 91 #define SFXGE_ETHERTYPE_LOOPBACK 0x9000 /* Xerox loopback */ 92 93 enum sfxge_evq_state { 94 SFXGE_EVQ_UNINITIALIZED = 0, 95 SFXGE_EVQ_INITIALIZED, 96 SFXGE_EVQ_STARTING, 97 SFXGE_EVQ_STARTED 98 }; 99 100 #define SFXGE_EV_BATCH 16384 101 102 struct sfxge_evq { 103 struct sfxge_softc *sc __aligned(CACHE_LINE_SIZE); 104 struct mtx lock __aligned(CACHE_LINE_SIZE); 105 106 enum sfxge_evq_state init_state; 107 unsigned int index; 108 efsys_mem_t mem; 109 unsigned int buf_base_id; 110 111 boolean_t exception; 112 113 efx_evq_t *common; 114 unsigned int read_ptr; 115 unsigned int rx_done; 116 unsigned int tx_done; 117 118 /* Linked list of TX queues with completions to process */ 119 struct sfxge_txq *txq; 120 struct sfxge_txq **txqs; 121 }; 122 123 #define SFXGE_NEVS 4096 124 #define SFXGE_NDESCS 1024 125 #define SFXGE_MODERATION 30 126 127 enum sfxge_intr_state { 128 SFXGE_INTR_UNINITIALIZED = 0, 129 SFXGE_INTR_INITIALIZED, 130 SFXGE_INTR_TESTING, 131 SFXGE_INTR_STARTED 132 }; 133 134 struct sfxge_intr_hdl { 135 int eih_rid; 136 void *eih_tag; 137 struct resource *eih_res; 138 }; 139 140 struct sfxge_intr { 141 enum sfxge_intr_state state; 142 struct resource *msix_res; 143 struct sfxge_intr_hdl *table; 144 int n_alloc; 145 int type; 146 efsys_mem_t status; 147 uint32_t zero_count; 148 }; 149 150 enum sfxge_mcdi_state { 151 SFXGE_MCDI_UNINITIALIZED = 0, 152 SFXGE_MCDI_INITIALIZED, 153 SFXGE_MCDI_BUSY, 154 SFXGE_MCDI_COMPLETED 155 }; 156 157 struct sfxge_mcdi { 158 struct mtx lock; 159 struct cv cv; 160 enum sfxge_mcdi_state state; 161 efx_mcdi_transport_t transport; 162 }; 163 164 struct sfxge_hw_stats { 165 clock_t update_time; 166 efsys_mem_t dma_buf; 167 void *decode_buf; 168 }; 169 170 enum sfxge_port_state { 171 SFXGE_PORT_UNINITIALIZED = 0, 172 SFXGE_PORT_INITIALIZED, 173 SFXGE_PORT_STARTED 174 }; 175 176 struct sfxge_port { 177 struct sfxge_softc *sc; 178 struct mtx lock; 179 enum sfxge_port_state init_state; 180 #ifndef SFXGE_HAVE_PAUSE_MEDIAOPTS 181 unsigned int wanted_fc; 182 #endif 183 struct sfxge_hw_stats phy_stats; 184 struct sfxge_hw_stats mac_stats; 185 efx_link_mode_t link_mode; 186 }; 187 188 enum sfxge_softc_state { 189 SFXGE_UNINITIALIZED = 0, 190 SFXGE_INITIALIZED, 191 SFXGE_REGISTERED, 192 SFXGE_STARTED 193 }; 194 195 struct sfxge_softc { 196 device_t dev; 197 struct sx softc_lock; 198 enum sfxge_softc_state init_state; 199 struct ifnet *ifnet; 200 unsigned int if_flags; 201 struct sysctl_oid *stats_node; 202 203 struct task task_reset; 204 205 efx_family_t family; 206 caddr_t vpd_data; 207 size_t vpd_size; 208 efx_nic_t *enp; 209 struct mtx enp_lock; 210 211 bus_dma_tag_t parent_dma_tag; 212 efsys_bar_t bar; 213 214 struct sfxge_intr intr; 215 struct sfxge_mcdi mcdi; 216 struct sfxge_port port; 217 uint32_t buffer_table_next; 218 219 struct sfxge_evq *evq[SFXGE_RX_SCALE_MAX]; 220 unsigned int ev_moderation; 221 clock_t ev_stats_update_time; 222 uint64_t ev_stats[EV_NQSTATS]; 223 224 uma_zone_t rxq_cache; 225 struct sfxge_rxq *rxq[SFXGE_RX_SCALE_MAX]; 226 unsigned int rx_indir_table[SFXGE_RX_SCALE_MAX]; 227 228 #ifdef SFXGE_HAVE_MQ 229 struct sfxge_txq *txq[SFXGE_TXQ_NTYPES + SFXGE_RX_SCALE_MAX]; 230 #else 231 struct sfxge_txq *txq[SFXGE_TXQ_NTYPES]; 232 #endif 233 234 struct ifmedia media; 235 236 size_t rx_prefix_size; 237 size_t rx_buffer_size; 238 uma_zone_t rx_buffer_zone; 239 240 #ifndef SFXGE_HAVE_MQ 241 struct mtx tx_lock __aligned(CACHE_LINE_SIZE); 242 #endif 243 }; 244 245 #define SFXGE_LINK_UP(sc) ((sc)->port.link_mode != EFX_LINK_DOWN) 246 #define SFXGE_RUNNING(sc) ((sc)->ifnet->if_drv_flags & IFF_DRV_RUNNING) 247 248 /* 249 * From sfxge.c. 250 */ 251 extern void sfxge_schedule_reset(struct sfxge_softc *sc); 252 extern void sfxge_sram_buf_tbl_alloc(struct sfxge_softc *sc, size_t n, 253 uint32_t *idp); 254 255 /* 256 * From sfxge_dma.c. 257 */ 258 extern int sfxge_dma_init(struct sfxge_softc *sc); 259 extern void sfxge_dma_fini(struct sfxge_softc *sc); 260 extern int sfxge_dma_alloc(struct sfxge_softc *sc, bus_size_t len, 261 efsys_mem_t *esmp); 262 extern void sfxge_dma_free(efsys_mem_t *esmp); 263 extern int sfxge_dma_map_sg_collapse(bus_dma_tag_t tag, bus_dmamap_t map, 264 struct mbuf **mp, bus_dma_segment_t *segs, int *nsegs, int maxsegs); 265 266 /* 267 * From sfxge_ev.c. 268 */ 269 extern int sfxge_ev_init(struct sfxge_softc *sc); 270 extern void sfxge_ev_fini(struct sfxge_softc *sc); 271 extern int sfxge_ev_start(struct sfxge_softc *sc); 272 extern void sfxge_ev_stop(struct sfxge_softc *sc); 273 extern int sfxge_ev_qpoll(struct sfxge_softc *sc, unsigned int index); 274 275 /* 276 * From sfxge_intr.c. 277 */ 278 extern int sfxge_intr_init(struct sfxge_softc *sc); 279 extern void sfxge_intr_fini(struct sfxge_softc *sc); 280 extern int sfxge_intr_start(struct sfxge_softc *sc); 281 extern void sfxge_intr_stop(struct sfxge_softc *sc); 282 283 /* 284 * From sfxge_mcdi.c. 285 */ 286 extern int sfxge_mcdi_init(struct sfxge_softc *sc); 287 extern void sfxge_mcdi_fini(struct sfxge_softc *sc); 288 289 /* 290 * From sfxge_port.c. 291 */ 292 extern int sfxge_port_init(struct sfxge_softc *sc); 293 extern void sfxge_port_fini(struct sfxge_softc *sc); 294 extern int sfxge_port_start(struct sfxge_softc *sc); 295 extern void sfxge_port_stop(struct sfxge_softc *sc); 296 extern void sfxge_mac_link_update(struct sfxge_softc *sc, 297 efx_link_mode_t mode); 298 extern int sfxge_mac_filter_set(struct sfxge_softc *sc); 299 extern int sfxge_port_ifmedia_init(struct sfxge_softc *sc); 300 301 #define SFXGE_MAX_MTU (9 * 1024) 302 303 #endif /* _SFXGE_H */ 304