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 ROUNDUP_POW_OF_TWO(_n) (1ULL << flsl((_n) - 1)) 91 92 #define SFXGE_IP_ALIGN 2 93 94 #define SFXGE_ETHERTYPE_LOOPBACK 0x9000 /* Xerox loopback */ 95 96 enum sfxge_evq_state { 97 SFXGE_EVQ_UNINITIALIZED = 0, 98 SFXGE_EVQ_INITIALIZED, 99 SFXGE_EVQ_STARTING, 100 SFXGE_EVQ_STARTED 101 }; 102 103 #define SFXGE_EV_BATCH 16384 104 105 struct sfxge_evq { 106 struct sfxge_softc *sc __aligned(CACHE_LINE_SIZE); 107 struct mtx lock __aligned(CACHE_LINE_SIZE); 108 109 enum sfxge_evq_state init_state; 110 unsigned int index; 111 unsigned int entries; 112 efsys_mem_t mem; 113 unsigned int buf_base_id; 114 115 boolean_t exception; 116 117 efx_evq_t *common; 118 unsigned int read_ptr; 119 unsigned int rx_done; 120 unsigned int tx_done; 121 122 /* Linked list of TX queues with completions to process */ 123 struct sfxge_txq *txq; 124 struct sfxge_txq **txqs; 125 }; 126 127 #define SFXGE_NDESCS 1024 128 #define SFXGE_MODERATION 30 129 130 enum sfxge_intr_state { 131 SFXGE_INTR_UNINITIALIZED = 0, 132 SFXGE_INTR_INITIALIZED, 133 SFXGE_INTR_TESTING, 134 SFXGE_INTR_STARTED 135 }; 136 137 struct sfxge_intr_hdl { 138 int eih_rid; 139 void *eih_tag; 140 struct resource *eih_res; 141 }; 142 143 struct sfxge_intr { 144 enum sfxge_intr_state state; 145 struct resource *msix_res; 146 struct sfxge_intr_hdl *table; 147 int n_alloc; 148 int type; 149 efsys_mem_t status; 150 uint32_t zero_count; 151 }; 152 153 enum sfxge_mcdi_state { 154 SFXGE_MCDI_UNINITIALIZED = 0, 155 SFXGE_MCDI_INITIALIZED, 156 SFXGE_MCDI_BUSY, 157 SFXGE_MCDI_COMPLETED 158 }; 159 160 struct sfxge_mcdi { 161 struct mtx lock; 162 struct cv cv; 163 enum sfxge_mcdi_state state; 164 efx_mcdi_transport_t transport; 165 }; 166 167 struct sfxge_hw_stats { 168 clock_t update_time; 169 efsys_mem_t dma_buf; 170 void *decode_buf; 171 }; 172 173 enum sfxge_port_state { 174 SFXGE_PORT_UNINITIALIZED = 0, 175 SFXGE_PORT_INITIALIZED, 176 SFXGE_PORT_STARTED 177 }; 178 179 struct sfxge_port { 180 struct sfxge_softc *sc; 181 struct mtx lock; 182 enum sfxge_port_state init_state; 183 #ifndef SFXGE_HAVE_PAUSE_MEDIAOPTS 184 unsigned int wanted_fc; 185 #endif 186 struct sfxge_hw_stats phy_stats; 187 struct sfxge_hw_stats mac_stats; 188 efx_link_mode_t link_mode; 189 }; 190 191 enum sfxge_softc_state { 192 SFXGE_UNINITIALIZED = 0, 193 SFXGE_INITIALIZED, 194 SFXGE_REGISTERED, 195 SFXGE_STARTED 196 }; 197 198 struct sfxge_softc { 199 device_t dev; 200 struct sx softc_lock; 201 enum sfxge_softc_state init_state; 202 struct ifnet *ifnet; 203 unsigned int if_flags; 204 struct sysctl_oid *stats_node; 205 struct sysctl_oid *txqs_node; 206 207 struct task task_reset; 208 209 efx_family_t family; 210 caddr_t vpd_data; 211 size_t vpd_size; 212 efx_nic_t *enp; 213 struct mtx enp_lock; 214 215 unsigned int rxq_entries; 216 unsigned int txq_entries; 217 218 bus_dma_tag_t parent_dma_tag; 219 efsys_bar_t bar; 220 221 struct sfxge_intr intr; 222 struct sfxge_mcdi mcdi; 223 struct sfxge_port port; 224 uint32_t buffer_table_next; 225 226 struct sfxge_evq *evq[SFXGE_RX_SCALE_MAX]; 227 unsigned int ev_moderation; 228 clock_t ev_stats_update_time; 229 uint64_t ev_stats[EV_NQSTATS]; 230 231 uma_zone_t rxq_cache; 232 struct sfxge_rxq *rxq[SFXGE_RX_SCALE_MAX]; 233 unsigned int rx_indir_table[SFXGE_RX_SCALE_MAX]; 234 235 #ifdef SFXGE_HAVE_MQ 236 struct sfxge_txq *txq[SFXGE_TXQ_NTYPES + SFXGE_RX_SCALE_MAX]; 237 #else 238 struct sfxge_txq *txq[SFXGE_TXQ_NTYPES]; 239 #endif 240 241 struct ifmedia media; 242 243 size_t rx_prefix_size; 244 size_t rx_buffer_size; 245 uma_zone_t rx_buffer_zone; 246 247 #ifndef SFXGE_HAVE_MQ 248 struct mtx tx_lock __aligned(CACHE_LINE_SIZE); 249 #endif 250 }; 251 252 #define SFXGE_LINK_UP(sc) ((sc)->port.link_mode != EFX_LINK_DOWN) 253 #define SFXGE_RUNNING(sc) ((sc)->ifnet->if_drv_flags & IFF_DRV_RUNNING) 254 255 #define SFXGE_PARAM(_name) "hw.sfxge." #_name 256 257 SYSCTL_DECL(_hw_sfxge); 258 259 /* 260 * From sfxge.c. 261 */ 262 extern void sfxge_schedule_reset(struct sfxge_softc *sc); 263 extern void sfxge_sram_buf_tbl_alloc(struct sfxge_softc *sc, size_t n, 264 uint32_t *idp); 265 266 /* 267 * From sfxge_dma.c. 268 */ 269 extern int sfxge_dma_init(struct sfxge_softc *sc); 270 extern void sfxge_dma_fini(struct sfxge_softc *sc); 271 extern int sfxge_dma_alloc(struct sfxge_softc *sc, bus_size_t len, 272 efsys_mem_t *esmp); 273 extern void sfxge_dma_free(efsys_mem_t *esmp); 274 extern int sfxge_dma_map_sg_collapse(bus_dma_tag_t tag, bus_dmamap_t map, 275 struct mbuf **mp, bus_dma_segment_t *segs, int *nsegs, int maxsegs); 276 277 /* 278 * From sfxge_ev.c. 279 */ 280 extern int sfxge_ev_init(struct sfxge_softc *sc); 281 extern void sfxge_ev_fini(struct sfxge_softc *sc); 282 extern int sfxge_ev_start(struct sfxge_softc *sc); 283 extern void sfxge_ev_stop(struct sfxge_softc *sc); 284 extern int sfxge_ev_qpoll(struct sfxge_softc *sc, unsigned int index); 285 286 /* 287 * From sfxge_intr.c. 288 */ 289 extern int sfxge_intr_init(struct sfxge_softc *sc); 290 extern void sfxge_intr_fini(struct sfxge_softc *sc); 291 extern int sfxge_intr_start(struct sfxge_softc *sc); 292 extern void sfxge_intr_stop(struct sfxge_softc *sc); 293 294 /* 295 * From sfxge_mcdi.c. 296 */ 297 extern int sfxge_mcdi_init(struct sfxge_softc *sc); 298 extern void sfxge_mcdi_fini(struct sfxge_softc *sc); 299 300 /* 301 * From sfxge_port.c. 302 */ 303 extern int sfxge_port_init(struct sfxge_softc *sc); 304 extern void sfxge_port_fini(struct sfxge_softc *sc); 305 extern int sfxge_port_start(struct sfxge_softc *sc); 306 extern void sfxge_port_stop(struct sfxge_softc *sc); 307 extern void sfxge_mac_link_update(struct sfxge_softc *sc, 308 efx_link_mode_t mode); 309 extern int sfxge_mac_filter_set(struct sfxge_softc *sc); 310 extern int sfxge_port_ifmedia_init(struct sfxge_softc *sc); 311 312 #define SFXGE_MAX_MTU (9 * 1024) 313 314 #endif /* _SFXGE_H */ 315