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_var.h> 46 #include <net/if_media.h> 47 #include <net/if_types.h> 48 49 /* 50 * Backward-compatibility 51 */ 52 #ifndef CACHE_LINE_SIZE 53 /* This should be right on most machines the driver will be used on, and 54 * we needn't care too much about wasting a few KB per interface. 55 */ 56 #define CACHE_LINE_SIZE 128 57 #endif 58 #ifndef IFCAP_LINKSTATE 59 #define IFCAP_LINKSTATE 0 60 #endif 61 #ifndef IFCAP_VLAN_HWTSO 62 #define IFCAP_VLAN_HWTSO 0 63 #endif 64 #ifndef IFM_10G_T 65 #define IFM_10G_T IFM_UNKNOWN 66 #endif 67 #ifndef IFM_10G_KX4 68 #define IFM_10G_KX4 IFM_10G_CX4 69 #endif 70 #if __FreeBSD_version >= 800054 71 /* Networking core is multiqueue aware. We can manage our own TX 72 * queues and use m_pkthdr.flowid. 73 */ 74 #define SFXGE_HAVE_MQ 75 #endif 76 #if (__FreeBSD_version >= 800501 && __FreeBSD_version < 900000) || \ 77 __FreeBSD_version >= 900003 78 #define SFXGE_HAVE_DESCRIBE_INTR 79 #endif 80 #ifdef IFM_ETH_RXPAUSE 81 #define SFXGE_HAVE_PAUSE_MEDIAOPTS 82 #endif 83 #ifndef CTLTYPE_U64 84 #define CTLTYPE_U64 CTLTYPE_QUAD 85 #endif 86 87 #include "sfxge_rx.h" 88 #include "sfxge_tx.h" 89 90 #define SFXGE_IP_ALIGN 2 91 92 #define SFXGE_ETHERTYPE_LOOPBACK 0x9000 /* Xerox loopback */ 93 94 enum sfxge_evq_state { 95 SFXGE_EVQ_UNINITIALIZED = 0, 96 SFXGE_EVQ_INITIALIZED, 97 SFXGE_EVQ_STARTING, 98 SFXGE_EVQ_STARTED 99 }; 100 101 #define SFXGE_EV_BATCH 16384 102 103 struct sfxge_evq { 104 struct sfxge_softc *sc __aligned(CACHE_LINE_SIZE); 105 struct mtx lock __aligned(CACHE_LINE_SIZE); 106 107 enum sfxge_evq_state init_state; 108 unsigned int index; 109 efsys_mem_t mem; 110 unsigned int buf_base_id; 111 112 boolean_t exception; 113 114 efx_evq_t *common; 115 unsigned int read_ptr; 116 unsigned int rx_done; 117 unsigned int tx_done; 118 119 /* Linked list of TX queues with completions to process */ 120 struct sfxge_txq *txq; 121 struct sfxge_txq **txqs; 122 }; 123 124 #define SFXGE_NEVS 4096 125 #define SFXGE_NDESCS 1024 126 #define SFXGE_MODERATION 30 127 128 enum sfxge_intr_state { 129 SFXGE_INTR_UNINITIALIZED = 0, 130 SFXGE_INTR_INITIALIZED, 131 SFXGE_INTR_TESTING, 132 SFXGE_INTR_STARTED 133 }; 134 135 struct sfxge_intr_hdl { 136 int eih_rid; 137 void *eih_tag; 138 struct resource *eih_res; 139 }; 140 141 struct sfxge_intr { 142 enum sfxge_intr_state state; 143 struct resource *msix_res; 144 struct sfxge_intr_hdl *table; 145 int n_alloc; 146 int type; 147 efsys_mem_t status; 148 uint32_t zero_count; 149 }; 150 151 enum sfxge_mcdi_state { 152 SFXGE_MCDI_UNINITIALIZED = 0, 153 SFXGE_MCDI_INITIALIZED, 154 SFXGE_MCDI_BUSY, 155 SFXGE_MCDI_COMPLETED 156 }; 157 158 struct sfxge_mcdi { 159 struct mtx lock; 160 struct cv cv; 161 enum sfxge_mcdi_state state; 162 efx_mcdi_transport_t transport; 163 }; 164 165 struct sfxge_hw_stats { 166 clock_t update_time; 167 efsys_mem_t dma_buf; 168 void *decode_buf; 169 }; 170 171 enum sfxge_port_state { 172 SFXGE_PORT_UNINITIALIZED = 0, 173 SFXGE_PORT_INITIALIZED, 174 SFXGE_PORT_STARTED 175 }; 176 177 struct sfxge_port { 178 struct sfxge_softc *sc; 179 struct mtx lock; 180 enum sfxge_port_state init_state; 181 #ifndef SFXGE_HAVE_PAUSE_MEDIAOPTS 182 unsigned int wanted_fc; 183 #endif 184 struct sfxge_hw_stats phy_stats; 185 struct sfxge_hw_stats mac_stats; 186 efx_link_mode_t link_mode; 187 }; 188 189 enum sfxge_softc_state { 190 SFXGE_UNINITIALIZED = 0, 191 SFXGE_INITIALIZED, 192 SFXGE_REGISTERED, 193 SFXGE_STARTED 194 }; 195 196 struct sfxge_softc { 197 device_t dev; 198 struct sx softc_lock; 199 enum sfxge_softc_state init_state; 200 struct ifnet *ifnet; 201 unsigned int if_flags; 202 struct sysctl_oid *stats_node; 203 204 struct task task_reset; 205 206 efx_family_t family; 207 caddr_t vpd_data; 208 size_t vpd_size; 209 efx_nic_t *enp; 210 struct mtx enp_lock; 211 212 bus_dma_tag_t parent_dma_tag; 213 efsys_bar_t bar; 214 215 struct sfxge_intr intr; 216 struct sfxge_mcdi mcdi; 217 struct sfxge_port port; 218 uint32_t buffer_table_next; 219 220 struct sfxge_evq *evq[SFXGE_RX_SCALE_MAX]; 221 unsigned int ev_moderation; 222 clock_t ev_stats_update_time; 223 uint64_t ev_stats[EV_NQSTATS]; 224 225 uma_zone_t rxq_cache; 226 struct sfxge_rxq *rxq[SFXGE_RX_SCALE_MAX]; 227 unsigned int rx_indir_table[SFXGE_RX_SCALE_MAX]; 228 229 #ifdef SFXGE_HAVE_MQ 230 struct sfxge_txq *txq[SFXGE_TXQ_NTYPES + SFXGE_RX_SCALE_MAX]; 231 #else 232 struct sfxge_txq *txq[SFXGE_TXQ_NTYPES]; 233 #endif 234 235 struct ifmedia media; 236 237 size_t rx_prefix_size; 238 size_t rx_buffer_size; 239 uma_zone_t rx_buffer_zone; 240 241 #ifndef SFXGE_HAVE_MQ 242 struct mtx tx_lock __aligned(CACHE_LINE_SIZE); 243 #endif 244 }; 245 246 #define SFXGE_LINK_UP(sc) ((sc)->port.link_mode != EFX_LINK_DOWN) 247 #define SFXGE_RUNNING(sc) ((sc)->ifnet->if_drv_flags & IFF_DRV_RUNNING) 248 249 /* 250 * From sfxge.c. 251 */ 252 extern void sfxge_schedule_reset(struct sfxge_softc *sc); 253 extern void sfxge_sram_buf_tbl_alloc(struct sfxge_softc *sc, size_t n, 254 uint32_t *idp); 255 256 /* 257 * From sfxge_dma.c. 258 */ 259 extern int sfxge_dma_init(struct sfxge_softc *sc); 260 extern void sfxge_dma_fini(struct sfxge_softc *sc); 261 extern int sfxge_dma_alloc(struct sfxge_softc *sc, bus_size_t len, 262 efsys_mem_t *esmp); 263 extern void sfxge_dma_free(efsys_mem_t *esmp); 264 extern int sfxge_dma_map_sg_collapse(bus_dma_tag_t tag, bus_dmamap_t map, 265 struct mbuf **mp, bus_dma_segment_t *segs, int *nsegs, int maxsegs); 266 267 /* 268 * From sfxge_ev.c. 269 */ 270 extern int sfxge_ev_init(struct sfxge_softc *sc); 271 extern void sfxge_ev_fini(struct sfxge_softc *sc); 272 extern int sfxge_ev_start(struct sfxge_softc *sc); 273 extern void sfxge_ev_stop(struct sfxge_softc *sc); 274 extern int sfxge_ev_qpoll(struct sfxge_softc *sc, unsigned int index); 275 276 /* 277 * From sfxge_intr.c. 278 */ 279 extern int sfxge_intr_init(struct sfxge_softc *sc); 280 extern void sfxge_intr_fini(struct sfxge_softc *sc); 281 extern int sfxge_intr_start(struct sfxge_softc *sc); 282 extern void sfxge_intr_stop(struct sfxge_softc *sc); 283 284 /* 285 * From sfxge_mcdi.c. 286 */ 287 extern int sfxge_mcdi_init(struct sfxge_softc *sc); 288 extern void sfxge_mcdi_fini(struct sfxge_softc *sc); 289 290 /* 291 * From sfxge_port.c. 292 */ 293 extern int sfxge_port_init(struct sfxge_softc *sc); 294 extern void sfxge_port_fini(struct sfxge_softc *sc); 295 extern int sfxge_port_start(struct sfxge_softc *sc); 296 extern void sfxge_port_stop(struct sfxge_softc *sc); 297 extern void sfxge_mac_link_update(struct sfxge_softc *sc, 298 efx_link_mode_t mode); 299 extern int sfxge_mac_filter_set(struct sfxge_softc *sc); 300 extern int sfxge_port_ifmedia_init(struct sfxge_softc *sc); 301 302 #define SFXGE_MAX_MTU (9 * 1024) 303 304 #endif /* _SFXGE_H */ 305