1 /* QLogic qede NIC Driver 2 * Copyright (c) 2015-2017 QLogic Corporation 3 * 4 * This software is available to you under a choice of one of two 5 * licenses. You may choose to be licensed under the terms of the GNU 6 * General Public License (GPL) Version 2, available from the file 7 * COPYING in the main directory of this source tree, or the 8 * OpenIB.org BSD license below: 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions are met: 13 * 14 * - Redistributions of source code must retain the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer. 17 * 18 * - Redistributions in binary form must reproduce the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer in the documentation and /or other materials 21 * provided with the distribution. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30 * SOFTWARE. 31 */ 32 #ifndef _QEDE_H_ 33 #define _QEDE_H_ 34 #include <linux/compiler.h> 35 #include <linux/version.h> 36 #include <linux/workqueue.h> 37 #include <linux/netdevice.h> 38 #include <linux/interrupt.h> 39 #include <linux/bitmap.h> 40 #include <linux/kernel.h> 41 #include <linux/mutex.h> 42 #include <linux/bpf.h> 43 #include <linux/io.h> 44 #include <linux/qed/common_hsi.h> 45 #include <linux/qed/eth_common.h> 46 #include <linux/qed/qed_if.h> 47 #include <linux/qed/qed_chain.h> 48 #include <linux/qed/qed_eth_if.h> 49 50 #define QEDE_MAJOR_VERSION 8 51 #define QEDE_MINOR_VERSION 10 52 #define QEDE_REVISION_VERSION 10 53 #define QEDE_ENGINEERING_VERSION 20 54 #define DRV_MODULE_VERSION __stringify(QEDE_MAJOR_VERSION) "." \ 55 __stringify(QEDE_MINOR_VERSION) "." \ 56 __stringify(QEDE_REVISION_VERSION) "." \ 57 __stringify(QEDE_ENGINEERING_VERSION) 58 59 #define DRV_MODULE_SYM qede 60 61 struct qede_stats { 62 u64 no_buff_discards; 63 u64 packet_too_big_discard; 64 u64 ttl0_discard; 65 u64 rx_ucast_bytes; 66 u64 rx_mcast_bytes; 67 u64 rx_bcast_bytes; 68 u64 rx_ucast_pkts; 69 u64 rx_mcast_pkts; 70 u64 rx_bcast_pkts; 71 u64 mftag_filter_discards; 72 u64 mac_filter_discards; 73 u64 tx_ucast_bytes; 74 u64 tx_mcast_bytes; 75 u64 tx_bcast_bytes; 76 u64 tx_ucast_pkts; 77 u64 tx_mcast_pkts; 78 u64 tx_bcast_pkts; 79 u64 tx_err_drop_pkts; 80 u64 coalesced_pkts; 81 u64 coalesced_events; 82 u64 coalesced_aborts_num; 83 u64 non_coalesced_pkts; 84 u64 coalesced_bytes; 85 86 /* port */ 87 u64 rx_64_byte_packets; 88 u64 rx_65_to_127_byte_packets; 89 u64 rx_128_to_255_byte_packets; 90 u64 rx_256_to_511_byte_packets; 91 u64 rx_512_to_1023_byte_packets; 92 u64 rx_1024_to_1518_byte_packets; 93 u64 rx_1519_to_1522_byte_packets; 94 u64 rx_1519_to_2047_byte_packets; 95 u64 rx_2048_to_4095_byte_packets; 96 u64 rx_4096_to_9216_byte_packets; 97 u64 rx_9217_to_16383_byte_packets; 98 u64 rx_crc_errors; 99 u64 rx_mac_crtl_frames; 100 u64 rx_pause_frames; 101 u64 rx_pfc_frames; 102 u64 rx_align_errors; 103 u64 rx_carrier_errors; 104 u64 rx_oversize_packets; 105 u64 rx_jabbers; 106 u64 rx_undersize_packets; 107 u64 rx_fragments; 108 u64 tx_64_byte_packets; 109 u64 tx_65_to_127_byte_packets; 110 u64 tx_128_to_255_byte_packets; 111 u64 tx_256_to_511_byte_packets; 112 u64 tx_512_to_1023_byte_packets; 113 u64 tx_1024_to_1518_byte_packets; 114 u64 tx_1519_to_2047_byte_packets; 115 u64 tx_2048_to_4095_byte_packets; 116 u64 tx_4096_to_9216_byte_packets; 117 u64 tx_9217_to_16383_byte_packets; 118 u64 tx_pause_frames; 119 u64 tx_pfc_frames; 120 u64 tx_lpi_entry_count; 121 u64 tx_total_collisions; 122 u64 brb_truncates; 123 u64 brb_discards; 124 u64 tx_mac_ctrl_frames; 125 }; 126 127 struct qede_vlan { 128 struct list_head list; 129 u16 vid; 130 bool configured; 131 }; 132 133 struct qede_rdma_dev { 134 struct qedr_dev *qedr_dev; 135 struct list_head entry; 136 struct list_head roce_event_list; 137 struct workqueue_struct *roce_wq; 138 }; 139 140 struct qede_ptp; 141 142 struct qede_dev { 143 struct qed_dev *cdev; 144 struct net_device *ndev; 145 struct pci_dev *pdev; 146 147 u32 dp_module; 148 u8 dp_level; 149 150 u32 flags; 151 #define QEDE_FLAG_IS_VF BIT(0) 152 #define IS_VF(edev) (!!((edev)->flags & QEDE_FLAG_IS_VF)) 153 #define QEDE_TX_TIMESTAMPING_EN BIT(1) 154 155 const struct qed_eth_ops *ops; 156 struct qede_ptp *ptp; 157 158 struct qed_dev_eth_info dev_info; 159 #define QEDE_MAX_RSS_CNT(edev) ((edev)->dev_info.num_queues) 160 #define QEDE_MAX_TSS_CNT(edev) ((edev)->dev_info.num_queues) 161 162 struct qede_fastpath *fp_array; 163 u8 req_num_tx; 164 u8 fp_num_tx; 165 u8 req_num_rx; 166 u8 fp_num_rx; 167 u16 req_queues; 168 u16 num_queues; 169 #define QEDE_QUEUE_CNT(edev) ((edev)->num_queues) 170 #define QEDE_RSS_COUNT(edev) ((edev)->num_queues - (edev)->fp_num_tx) 171 #define QEDE_RX_QUEUE_IDX(edev, i) (i) 172 #define QEDE_TSS_COUNT(edev) ((edev)->num_queues - (edev)->fp_num_rx) 173 174 struct qed_int_info int_info; 175 unsigned char primary_mac[ETH_ALEN]; 176 177 /* Smaller private varaiant of the RTNL lock */ 178 struct mutex qede_lock; 179 u32 state; /* Protected by qede_lock */ 180 u16 rx_buf_size; 181 u32 rx_copybreak; 182 183 /* L2 header size + 2*VLANs (8 bytes) + LLC SNAP (8 bytes) */ 184 #define ETH_OVERHEAD (ETH_HLEN + 8 + 8) 185 /* Max supported alignment is 256 (8 shift) 186 * minimal alignment shift 6 is optimal for 57xxx HW performance 187 */ 188 #define QEDE_RX_ALIGN_SHIFT max(6, min(8, L1_CACHE_SHIFT)) 189 /* We assume skb_build() uses sizeof(struct skb_shared_info) bytes 190 * at the end of skb->data, to avoid wasting a full cache line. 191 * This reduces memory use (skb->truesize). 192 */ 193 #define QEDE_FW_RX_ALIGN_END \ 194 max_t(u64, 1UL << QEDE_RX_ALIGN_SHIFT, \ 195 SKB_DATA_ALIGN(sizeof(struct skb_shared_info))) 196 197 struct qede_stats stats; 198 #define QEDE_RSS_INDIR_INITED BIT(0) 199 #define QEDE_RSS_KEY_INITED BIT(1) 200 #define QEDE_RSS_CAPS_INITED BIT(2) 201 u32 rss_params_inited; /* bit-field to track initialized rss params */ 202 u16 rss_ind_table[128]; 203 u32 rss_key[10]; 204 u8 rss_caps; 205 206 u16 q_num_rx_buffers; /* Must be a power of two */ 207 u16 q_num_tx_buffers; /* Must be a power of two */ 208 209 bool gro_disable; 210 struct list_head vlan_list; 211 u16 configured_vlans; 212 u16 non_configured_vlans; 213 bool accept_any_vlan; 214 struct delayed_work sp_task; 215 unsigned long sp_flags; 216 u16 vxlan_dst_port; 217 u16 geneve_dst_port; 218 219 bool wol_enabled; 220 221 struct qede_rdma_dev rdma_info; 222 223 struct bpf_prog *xdp_prog; 224 }; 225 226 enum QEDE_STATE { 227 QEDE_STATE_CLOSED, 228 QEDE_STATE_OPEN, 229 }; 230 231 #define HILO_U64(hi, lo) ((((u64)(hi)) << 32) + (lo)) 232 233 #define MAX_NUM_TC 8 234 #define MAX_NUM_PRI 8 235 236 /* The driver supports the new build_skb() API: 237 * RX ring buffer contains pointer to kmalloc() data only, 238 * skb are built only after the frame was DMA-ed. 239 */ 240 struct sw_rx_data { 241 struct page *data; 242 dma_addr_t mapping; 243 unsigned int page_offset; 244 }; 245 246 enum qede_agg_state { 247 QEDE_AGG_STATE_NONE = 0, 248 QEDE_AGG_STATE_START = 1, 249 QEDE_AGG_STATE_ERROR = 2 250 }; 251 252 struct qede_agg_info { 253 /* rx_buf is a data buffer that can be placed / consumed from rx bd 254 * chain. It has two purposes: We will preallocate the data buffer 255 * for each aggregation when we open the interface and will place this 256 * buffer on the rx-bd-ring when we receive TPA_START. We don't want 257 * to be in a state where allocation fails, as we can't reuse the 258 * consumer buffer in the rx-chain since FW may still be writing to it 259 * (since header needs to be modified for TPA). 260 * The second purpose is to keep a pointer to the bd buffer during 261 * aggregation. 262 */ 263 struct sw_rx_data buffer; 264 dma_addr_t buffer_mapping; 265 266 struct sk_buff *skb; 267 268 /* We need some structs from the start cookie until termination */ 269 u16 vlan_tag; 270 u16 start_cqe_bd_len; 271 u8 start_cqe_placement_offset; 272 273 u8 state; 274 u8 frag_id; 275 276 u8 tunnel_type; 277 }; 278 279 struct qede_rx_queue { 280 __le16 *hw_cons_ptr; 281 void __iomem *hw_rxq_prod_addr; 282 283 /* Required for the allocation of replacement buffers */ 284 struct device *dev; 285 286 struct bpf_prog *xdp_prog; 287 288 u16 sw_rx_cons; 289 u16 sw_rx_prod; 290 291 u16 filled_buffers; 292 u8 data_direction; 293 u8 rxq_id; 294 295 u32 rx_buf_size; 296 u32 rx_buf_seg_size; 297 298 u64 rcv_pkts; 299 300 struct sw_rx_data *sw_rx_ring; 301 struct qed_chain rx_bd_ring; 302 struct qed_chain rx_comp_ring ____cacheline_aligned; 303 304 /* Used once per each NAPI run */ 305 u16 num_rx_buffers; 306 307 /* GRO */ 308 struct qede_agg_info tpa_info[ETH_TPA_MAX_AGGS_NUM]; 309 310 u64 rx_hw_errors; 311 u64 rx_alloc_errors; 312 u64 rx_ip_frags; 313 314 u64 xdp_no_pass; 315 316 void *handle; 317 }; 318 319 union db_prod { 320 struct eth_db_data data; 321 u32 raw; 322 }; 323 324 struct sw_tx_bd { 325 struct sk_buff *skb; 326 u8 flags; 327 /* Set on the first BD descriptor when there is a split BD */ 328 #define QEDE_TSO_SPLIT_BD BIT(0) 329 }; 330 331 struct qede_tx_queue { 332 u8 is_xdp; 333 bool is_legacy; 334 u16 sw_tx_cons; 335 u16 sw_tx_prod; 336 u16 num_tx_buffers; /* Slowpath only */ 337 338 u64 xmit_pkts; 339 u64 stopped_cnt; 340 341 __le16 *hw_cons_ptr; 342 343 /* Needed for the mapping of packets */ 344 struct device *dev; 345 346 void __iomem *doorbell_addr; 347 union db_prod tx_db; 348 int index; /* Slowpath only */ 349 #define QEDE_TXQ_XDP_TO_IDX(edev, txq) ((txq)->index - \ 350 QEDE_MAX_TSS_CNT(edev)) 351 #define QEDE_TXQ_IDX_TO_XDP(edev, idx) ((idx) + QEDE_MAX_TSS_CNT(edev)) 352 353 /* Regular Tx requires skb + metadata for release purpose, 354 * while XDP requires only the pages themselves. 355 */ 356 union { 357 struct sw_tx_bd *skbs; 358 struct page **pages; 359 } sw_tx_ring; 360 361 struct qed_chain tx_pbl; 362 363 /* Slowpath; Should be kept in end [unless missing padding] */ 364 void *handle; 365 }; 366 367 #define BD_UNMAP_ADDR(bd) HILO_U64(le32_to_cpu((bd)->addr.hi), \ 368 le32_to_cpu((bd)->addr.lo)) 369 #define BD_SET_UNMAP_ADDR_LEN(bd, maddr, len) \ 370 do { \ 371 (bd)->addr.hi = cpu_to_le32(upper_32_bits(maddr)); \ 372 (bd)->addr.lo = cpu_to_le32(lower_32_bits(maddr)); \ 373 (bd)->nbytes = cpu_to_le16(len); \ 374 } while (0) 375 #define BD_UNMAP_LEN(bd) (le16_to_cpu((bd)->nbytes)) 376 377 struct qede_fastpath { 378 struct qede_dev *edev; 379 #define QEDE_FASTPATH_TX BIT(0) 380 #define QEDE_FASTPATH_RX BIT(1) 381 #define QEDE_FASTPATH_XDP BIT(2) 382 #define QEDE_FASTPATH_COMBINED (QEDE_FASTPATH_TX | QEDE_FASTPATH_RX) 383 u8 type; 384 u8 id; 385 u8 xdp_xmit; 386 struct napi_struct napi; 387 struct qed_sb_info *sb_info; 388 struct qede_rx_queue *rxq; 389 struct qede_tx_queue *txq; 390 struct qede_tx_queue *xdp_tx; 391 392 #define VEC_NAME_SIZE (sizeof(((struct net_device *)0)->name) + 8) 393 char name[VEC_NAME_SIZE]; 394 }; 395 396 /* Debug print definitions */ 397 #define DP_NAME(edev) ((edev)->ndev->name) 398 399 #define XMIT_PLAIN 0 400 #define XMIT_L4_CSUM BIT(0) 401 #define XMIT_LSO BIT(1) 402 #define XMIT_ENC BIT(2) 403 #define XMIT_ENC_GSO_L4_CSUM BIT(3) 404 405 #define QEDE_CSUM_ERROR BIT(0) 406 #define QEDE_CSUM_UNNECESSARY BIT(1) 407 #define QEDE_TUNN_CSUM_UNNECESSARY BIT(2) 408 409 #define QEDE_SP_RX_MODE 1 410 #define QEDE_SP_VXLAN_PORT_CONFIG 2 411 #define QEDE_SP_GENEVE_PORT_CONFIG 3 412 413 struct qede_reload_args { 414 void (*func)(struct qede_dev *edev, struct qede_reload_args *args); 415 union { 416 netdev_features_t features; 417 struct bpf_prog *new_prog; 418 u16 mtu; 419 } u; 420 }; 421 422 /* Datapath functions definition */ 423 netdev_tx_t qede_start_xmit(struct sk_buff *skb, struct net_device *ndev); 424 netdev_features_t qede_features_check(struct sk_buff *skb, 425 struct net_device *dev, 426 netdev_features_t features); 427 void qede_tx_log_print(struct qede_dev *edev, struct qede_fastpath *fp); 428 int qede_alloc_rx_buffer(struct qede_rx_queue *rxq, bool allow_lazy); 429 int qede_free_tx_pkt(struct qede_dev *edev, 430 struct qede_tx_queue *txq, int *len); 431 int qede_poll(struct napi_struct *napi, int budget); 432 irqreturn_t qede_msix_fp_int(int irq, void *fp_cookie); 433 434 /* Filtering function definitions */ 435 void qede_force_mac(void *dev, u8 *mac, bool forced); 436 int qede_set_mac_addr(struct net_device *ndev, void *p); 437 438 int qede_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid); 439 int qede_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid); 440 void qede_vlan_mark_nonconfigured(struct qede_dev *edev); 441 int qede_configure_vlan_filters(struct qede_dev *edev); 442 443 int qede_set_features(struct net_device *dev, netdev_features_t features); 444 void qede_set_rx_mode(struct net_device *ndev); 445 void qede_config_rx_mode(struct net_device *ndev); 446 void qede_fill_rss_params(struct qede_dev *edev, 447 struct qed_update_vport_rss_params *rss, u8 *update); 448 449 void qede_udp_tunnel_add(struct net_device *dev, struct udp_tunnel_info *ti); 450 void qede_udp_tunnel_del(struct net_device *dev, struct udp_tunnel_info *ti); 451 452 int qede_xdp(struct net_device *dev, struct netdev_xdp *xdp); 453 454 #ifdef CONFIG_DCB 455 void qede_set_dcbnl_ops(struct net_device *ndev); 456 #endif 457 458 void qede_config_debug(uint debug, u32 *p_dp_module, u8 *p_dp_level); 459 void qede_set_ethtool_ops(struct net_device *netdev); 460 void qede_reload(struct qede_dev *edev, 461 struct qede_reload_args *args, bool is_locked); 462 int qede_change_mtu(struct net_device *dev, int new_mtu); 463 void qede_fill_by_demand_stats(struct qede_dev *edev); 464 void __qede_lock(struct qede_dev *edev); 465 void __qede_unlock(struct qede_dev *edev); 466 bool qede_has_rx_work(struct qede_rx_queue *rxq); 467 int qede_txq_has_work(struct qede_tx_queue *txq); 468 void qede_recycle_rx_bd_ring(struct qede_rx_queue *rxq, u8 count); 469 void qede_update_rx_prod(struct qede_dev *edev, struct qede_rx_queue *rxq); 470 471 #define RX_RING_SIZE_POW 13 472 #define RX_RING_SIZE ((u16)BIT(RX_RING_SIZE_POW)) 473 #define NUM_RX_BDS_MAX (RX_RING_SIZE - 1) 474 #define NUM_RX_BDS_MIN 128 475 #define NUM_RX_BDS_DEF ((u16)BIT(10) - 1) 476 477 #define TX_RING_SIZE_POW 13 478 #define TX_RING_SIZE ((u16)BIT(TX_RING_SIZE_POW)) 479 #define NUM_TX_BDS_MAX (TX_RING_SIZE - 1) 480 #define NUM_TX_BDS_MIN 128 481 #define NUM_TX_BDS_DEF NUM_TX_BDS_MAX 482 483 #define QEDE_MIN_PKT_LEN 64 484 #define QEDE_RX_HDR_SIZE 256 485 #define QEDE_MAX_JUMBO_PACKET_SIZE 9600 486 #define for_each_queue(i) for (i = 0; i < edev->num_queues; i++) 487 488 #endif /* _QEDE_H_ */ 489