1 /* 2 * Copyright (c) 2014-2015 Hisilicon Limited. 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License as published by 6 * the Free Software Foundation; either version 2 of the License, or 7 * (at your option) any later version. 8 */ 9 10 #ifndef __HNAE_H 11 #define __HNAE_H 12 13 /* Names used in this framework: 14 * ae handle (handle): 15 * a set of queues provided by AE 16 * ring buffer queue (rbq): 17 * the channel between upper layer and the AE, can do tx and rx 18 * ring: 19 * a tx or rx channel within a rbq 20 * ring description (desc): 21 * an element in the ring with packet information 22 * buffer: 23 * a memory region referred by desc with the full packet payload 24 * 25 * "num" means a static number set as a parameter, "count" mean a dynamic 26 * number set while running 27 * "cb" means control block 28 */ 29 30 #include <linux/acpi.h> 31 #include <linux/delay.h> 32 #include <linux/device.h> 33 #include <linux/module.h> 34 #include <linux/netdevice.h> 35 #include <linux/notifier.h> 36 #include <linux/phy.h> 37 #include <linux/types.h> 38 39 #define HNAE_DRIVER_VERSION "2.0" 40 #define HNAE_DRIVER_NAME "hns" 41 #define HNAE_COPYRIGHT "Copyright(c) 2015 Huawei Corporation." 42 #define HNAE_DRIVER_STRING "Hisilicon Network Subsystem Driver" 43 #define HNAE_DEFAULT_DEVICE_DESCR "Hisilicon Network Subsystem" 44 45 #ifdef DEBUG 46 47 #ifndef assert 48 #define assert(expr) \ 49 do { \ 50 if (!(expr)) { \ 51 pr_err("Assertion failed! %s, %s, %s, line %d\n", \ 52 #expr, __FILE__, __func__, __LINE__); \ 53 } \ 54 } while (0) 55 #endif 56 57 #else 58 59 #ifndef assert 60 #define assert(expr) 61 #endif 62 63 #endif 64 65 #define AE_VERSION_1 ('6' << 16 | '6' << 8 | '0') 66 #define AE_VERSION_2 ('1' << 24 | '6' << 16 | '1' << 8 | '0') 67 #define AE_IS_VER1(ver) ((ver) == AE_VERSION_1) 68 #define AE_NAME_SIZE 16 69 70 /* some said the RX and TX RCB format should not be the same in the future. But 71 * it is the same now... 72 */ 73 #define RCB_REG_BASEADDR_L 0x00 /* P660 support only 32bit accessing */ 74 #define RCB_REG_BASEADDR_H 0x04 75 #define RCB_REG_BD_NUM 0x08 76 #define RCB_REG_BD_LEN 0x0C 77 #define RCB_REG_PKTLINE 0x10 78 #define RCB_REG_TAIL 0x18 79 #define RCB_REG_HEAD 0x1C 80 #define RCB_REG_FBDNUM 0x20 81 #define RCB_REG_OFFSET 0x24 /* pkt num to be handled */ 82 #define RCB_REG_PKTNUM_RECORD 0x2C /* total pkt received */ 83 84 #define HNS_RX_HEAD_SIZE 256 85 86 #define HNAE_AE_REGISTER 0x1 87 88 #define RCB_RING_NAME_LEN 16 89 90 enum hnae_led_state { 91 HNAE_LED_INACTIVE, 92 HNAE_LED_ACTIVE, 93 HNAE_LED_ON, 94 HNAE_LED_OFF 95 }; 96 97 #define HNS_RX_FLAG_VLAN_PRESENT 0x1 98 #define HNS_RX_FLAG_L3ID_IPV4 0x0 99 #define HNS_RX_FLAG_L3ID_IPV6 0x1 100 #define HNS_RX_FLAG_L4ID_UDP 0x0 101 #define HNS_RX_FLAG_L4ID_TCP 0x1 102 103 #define HNS_TXD_ASID_S 0 104 #define HNS_TXD_ASID_M (0xff << HNS_TXD_ASID_S) 105 #define HNS_TXD_BUFNUM_S 8 106 #define HNS_TXD_BUFNUM_M (0x3 << HNS_TXD_BUFNUM_S) 107 #define HNS_TXD_PORTID_S 10 108 #define HNS_TXD_PORTID_M (0x7 << HNS_TXD_PORTID_S) 109 110 #define HNS_TXD_RA_B 8 111 #define HNS_TXD_RI_B 9 112 #define HNS_TXD_L4CS_B 10 113 #define HNS_TXD_L3CS_B 11 114 #define HNS_TXD_FE_B 12 115 #define HNS_TXD_VLD_B 13 116 #define HNS_TXD_IPOFFSET_S 14 117 #define HNS_TXD_IPOFFSET_M (0xff << HNS_TXD_IPOFFSET_S) 118 119 #define HNS_RXD_IPOFFSET_S 0 120 #define HNS_RXD_IPOFFSET_M (0xff << HNS_TXD_IPOFFSET_S) 121 #define HNS_RXD_BUFNUM_S 8 122 #define HNS_RXD_BUFNUM_M (0x3 << HNS_RXD_BUFNUM_S) 123 #define HNS_RXD_PORTID_S 10 124 #define HNS_RXD_PORTID_M (0x7 << HNS_RXD_PORTID_S) 125 #define HNS_RXD_DMAC_S 13 126 #define HNS_RXD_DMAC_M (0x3 << HNS_RXD_DMAC_S) 127 #define HNS_RXD_VLAN_S 15 128 #define HNS_RXD_VLAN_M (0x3 << HNS_RXD_VLAN_S) 129 #define HNS_RXD_L3ID_S 17 130 #define HNS_RXD_L3ID_M (0xf << HNS_RXD_L3ID_S) 131 #define HNS_RXD_L4ID_S 21 132 #define HNS_RXD_L4ID_M (0xf << HNS_RXD_L4ID_S) 133 #define HNS_RXD_FE_B 25 134 #define HNS_RXD_FRAG_B 26 135 #define HNS_RXD_VLD_B 27 136 #define HNS_RXD_L2E_B 28 137 #define HNS_RXD_L3E_B 29 138 #define HNS_RXD_L4E_B 30 139 #define HNS_RXD_DROP_B 31 140 141 #define HNS_RXD_VLANID_S 8 142 #define HNS_RXD_VLANID_M (0xfff << HNS_RXD_VLANID_S) 143 #define HNS_RXD_CFI_B 20 144 #define HNS_RXD_PRI_S 21 145 #define HNS_RXD_PRI_M (0x7 << HNS_RXD_PRI_S) 146 #define HNS_RXD_ASID_S 24 147 #define HNS_RXD_ASID_M (0xff << HNS_RXD_ASID_S) 148 149 #define HNSV2_TXD_BUFNUM_S 0 150 #define HNSV2_TXD_BUFNUM_M (0x7 << HNSV2_TXD_BUFNUM_S) 151 #define HNSV2_TXD_PORTID_S 4 152 #define HNSV2_TXD_PORTID_M (0X7 << HNSV2_TXD_PORTID_S) 153 #define HNSV2_TXD_RI_B 1 154 #define HNSV2_TXD_L4CS_B 2 155 #define HNSV2_TXD_L3CS_B 3 156 #define HNSV2_TXD_FE_B 4 157 #define HNSV2_TXD_VLD_B 5 158 159 #define HNSV2_TXD_TSE_B 0 160 #define HNSV2_TXD_VLAN_EN_B 1 161 #define HNSV2_TXD_SNAP_B 2 162 #define HNSV2_TXD_IPV6_B 3 163 #define HNSV2_TXD_SCTP_B 4 164 165 /* hardware spec ring buffer format */ 166 struct __packed hnae_desc { 167 __le64 addr; 168 union { 169 struct { 170 union { 171 __le16 asid_bufnum_pid; 172 __le16 asid; 173 }; 174 __le16 send_size; 175 union { 176 __le32 flag_ipoffset; 177 struct { 178 __u8 bn_pid; 179 __u8 ra_ri_cs_fe_vld; 180 __u8 ip_offset; 181 __u8 tse_vlan_snap_v6_sctp_nth; 182 }; 183 }; 184 __le16 mss; 185 __u8 l4_len; 186 __u8 reserved1; 187 __le16 paylen; 188 __u8 vmid; 189 __u8 qid; 190 __le32 reserved2[2]; 191 } tx; 192 193 struct { 194 __le32 ipoff_bnum_pid_flag; 195 __le16 pkt_len; 196 __le16 size; 197 union { 198 __le32 vlan_pri_asid; 199 struct { 200 __le16 asid; 201 __le16 vlan_cfi_pri; 202 }; 203 }; 204 __le32 rss_hash; 205 __le32 reserved_1[2]; 206 } rx; 207 }; 208 }; 209 210 struct hnae_desc_cb { 211 dma_addr_t dma; /* dma address of this desc */ 212 void *buf; /* cpu addr for a desc */ 213 214 /* priv data for the desc, e.g. skb when use with ip stack*/ 215 void *priv; 216 u16 page_offset; 217 u16 reuse_flag; 218 219 u16 length; /* length of the buffer */ 220 221 /* desc type, used by the ring user to mark the type of the priv data */ 222 u16 type; 223 }; 224 225 #define setflags(flags, bits) ((flags) |= (bits)) 226 #define unsetflags(flags, bits) ((flags) &= ~(bits)) 227 228 /* hnae_ring->flags fields */ 229 #define RINGF_DIR 0x1 /* TX or RX ring, set if TX */ 230 #define is_tx_ring(ring) ((ring)->flags & RINGF_DIR) 231 #define is_rx_ring(ring) (!is_tx_ring(ring)) 232 #define ring_to_dma_dir(ring) (is_tx_ring(ring) ? \ 233 DMA_TO_DEVICE : DMA_FROM_DEVICE) 234 235 struct ring_stats { 236 u64 io_err_cnt; 237 u64 sw_err_cnt; 238 u64 seg_pkt_cnt; 239 union { 240 struct { 241 u64 tx_pkts; 242 u64 tx_bytes; 243 u64 tx_err_cnt; 244 u64 restart_queue; 245 u64 tx_busy; 246 }; 247 struct { 248 u64 rx_pkts; 249 u64 rx_bytes; 250 u64 rx_err_cnt; 251 u64 reuse_pg_cnt; 252 u64 err_pkt_len; 253 u64 non_vld_descs; 254 u64 err_bd_num; 255 u64 l2_err; 256 u64 l3l4_csum_err; 257 }; 258 }; 259 }; 260 261 struct hnae_queue; 262 263 struct hnae_ring { 264 u8 __iomem *io_base; /* base io address for the ring */ 265 struct hnae_desc *desc; /* dma map address space */ 266 struct hnae_desc_cb *desc_cb; 267 struct hnae_queue *q; 268 int irq; 269 char ring_name[RCB_RING_NAME_LEN]; 270 271 /* statistic */ 272 struct ring_stats stats; 273 274 dma_addr_t desc_dma_addr; 275 u32 buf_size; /* size for hnae_desc->addr, preset by AE */ 276 u16 desc_num; /* total number of desc */ 277 u16 max_desc_num_per_pkt; 278 u16 max_raw_data_sz_per_desc; 279 u16 max_pkt_size; 280 int next_to_use; /* idx of next spare desc */ 281 282 /* idx of lastest sent desc, the ring is empty when equal to 283 * next_to_use 284 */ 285 int next_to_clean; 286 287 int flags; /* ring attribute */ 288 int irq_init_flag; 289 }; 290 291 #define ring_ptr_move_fw(ring, p) \ 292 ((ring)->p = ((ring)->p + 1) % (ring)->desc_num) 293 #define ring_ptr_move_bw(ring, p) \ 294 ((ring)->p = ((ring)->p - 1 + (ring)->desc_num) % (ring)->desc_num) 295 296 enum hns_desc_type { 297 DESC_TYPE_SKB, 298 DESC_TYPE_PAGE, 299 }; 300 301 #define assert_is_ring_idx(ring, idx) \ 302 assert((idx) >= 0 && (idx) < (ring)->desc_num) 303 304 /* the distance between [begin, end) in a ring buffer 305 * note: there is a unuse slot between the begin and the end 306 */ 307 static inline int ring_dist(struct hnae_ring *ring, int begin, int end) 308 { 309 assert_is_ring_idx(ring, begin); 310 assert_is_ring_idx(ring, end); 311 312 return (end - begin + ring->desc_num) % ring->desc_num; 313 } 314 315 static inline int ring_space(struct hnae_ring *ring) 316 { 317 return ring->desc_num - 318 ring_dist(ring, ring->next_to_clean, ring->next_to_use) - 1; 319 } 320 321 static inline int is_ring_empty(struct hnae_ring *ring) 322 { 323 assert_is_ring_idx(ring, ring->next_to_use); 324 assert_is_ring_idx(ring, ring->next_to_clean); 325 326 return ring->next_to_use == ring->next_to_clean; 327 } 328 329 #define hnae_buf_size(_ring) ((_ring)->buf_size) 330 #define hnae_page_order(_ring) (get_order(hnae_buf_size(_ring))) 331 #define hnae_page_size(_ring) (PAGE_SIZE << hnae_page_order(_ring)) 332 333 struct hnae_handle; 334 335 /* allocate and dma map space for hnae desc */ 336 struct hnae_buf_ops { 337 int (*alloc_buffer)(struct hnae_ring *ring, struct hnae_desc_cb *cb); 338 void (*free_buffer)(struct hnae_ring *ring, struct hnae_desc_cb *cb); 339 int (*map_buffer)(struct hnae_ring *ring, struct hnae_desc_cb *cb); 340 void (*unmap_buffer)(struct hnae_ring *ring, struct hnae_desc_cb *cb); 341 }; 342 343 struct hnae_queue { 344 void __iomem *io_base; 345 phys_addr_t phy_base; 346 struct hnae_ae_dev *dev; /* the device who use this queue */ 347 struct hnae_ring rx_ring ____cacheline_internodealigned_in_smp; 348 struct hnae_ring tx_ring ____cacheline_internodealigned_in_smp; 349 struct hnae_handle *handle; 350 }; 351 352 /*hnae loop mode*/ 353 enum hnae_loop { 354 MAC_INTERNALLOOP_MAC = 0, 355 MAC_INTERNALLOOP_SERDES, 356 MAC_INTERNALLOOP_PHY, 357 MAC_LOOP_NONE, 358 }; 359 360 /*hnae port type*/ 361 enum hnae_port_type { 362 HNAE_PORT_SERVICE = 0, 363 HNAE_PORT_DEBUG 364 }; 365 366 /* mac media type */ 367 enum hnae_media_type { 368 HNAE_MEDIA_TYPE_UNKNOWN = 0, 369 HNAE_MEDIA_TYPE_FIBER, 370 HNAE_MEDIA_TYPE_COPPER, 371 HNAE_MEDIA_TYPE_BACKPLANE, 372 }; 373 374 /* This struct defines the operation on the handle. 375 * 376 * get_handle(): (mandatory) 377 * Get a handle from AE according to its name and options. 378 * the AE driver should manage the space used by handle and its queues while 379 * the HNAE framework will allocate desc and desc_cb for all rings in the 380 * queues. 381 * put_handle(): 382 * Release the handle. 383 * start(): 384 * Enable the hardware, include all queues 385 * stop(): 386 * Disable the hardware 387 * set_opts(): (mandatory) 388 * Set options to the AE 389 * get_opts(): (mandatory) 390 * Get options from the AE 391 * get_status(): 392 * Get the carrier state of the back channel of the handle, 1 for ok, 0 for 393 * non-ok 394 * toggle_ring_irq(): (mandatory) 395 * Set the ring irq to be enabled(0) or disable(1) 396 * toggle_queue_status(): (mandatory) 397 * Set the queue to be enabled(1) or disable(0), this will not change the 398 * ring irq state 399 * adjust_link() 400 * adjust link status 401 * set_loopback() 402 * set loopback 403 * get_ring_bdnum_limit() 404 * get ring bd number limit 405 * get_pauseparam() 406 * get tx and rx of pause frame use 407 * set_autoneg() 408 * set auto autonegotiation of pause frame use 409 * get_autoneg() 410 * get auto autonegotiation of pause frame use 411 * set_pauseparam() 412 * set tx and rx of pause frame use 413 * get_coalesce_usecs() 414 * get usecs to delay a TX interrupt after a packet is sent 415 * get_rx_max_coalesced_frames() 416 * get Maximum number of packets to be sent before a TX interrupt. 417 * set_coalesce_usecs() 418 * set usecs to delay a TX interrupt after a packet is sent 419 * set_coalesce_frames() 420 * set Maximum number of packets to be sent before a TX interrupt. 421 * get_ringnum() 422 * get RX/TX ring number 423 * get_max_ringnum() 424 * get RX/TX ring maximum number 425 * get_mac_addr() 426 * get mac address 427 * set_mac_addr() 428 * set mac address 429 * clr_mc_addr() 430 * clear mcast tcam table 431 * set_mc_addr() 432 * set multicast mode 433 * set_mtu() 434 * set mtu 435 * update_stats() 436 * update Old network device statistics 437 * get_ethtool_stats() 438 * get ethtool network device statistics 439 * get_strings() 440 * get a set of strings that describe the requested objects 441 * get_sset_count() 442 * get number of strings that @get_strings will write 443 * update_led_status() 444 * update the led status 445 * set_led_id() 446 * set led id 447 * get_regs() 448 * get regs dump 449 * get_regs_len() 450 * get the len of the regs dump 451 */ 452 struct hnae_ae_ops { 453 struct hnae_handle *(*get_handle)(struct hnae_ae_dev *dev, 454 u32 port_id); 455 void (*put_handle)(struct hnae_handle *handle); 456 void (*init_queue)(struct hnae_queue *q); 457 void (*fini_queue)(struct hnae_queue *q); 458 int (*start)(struct hnae_handle *handle); 459 void (*stop)(struct hnae_handle *handle); 460 void (*reset)(struct hnae_handle *handle); 461 int (*set_opts)(struct hnae_handle *handle, int type, void *opts); 462 int (*get_opts)(struct hnae_handle *handle, int type, void **opts); 463 int (*get_status)(struct hnae_handle *handle); 464 int (*get_info)(struct hnae_handle *handle, 465 u8 *auto_neg, u16 *speed, u8 *duplex); 466 void (*toggle_ring_irq)(struct hnae_ring *ring, u32 val); 467 void (*adjust_link)(struct hnae_handle *handle, int speed, int duplex); 468 int (*set_loopback)(struct hnae_handle *handle, 469 enum hnae_loop loop_mode, int en); 470 void (*get_ring_bdnum_limit)(struct hnae_queue *queue, 471 u32 *uplimit); 472 void (*get_pauseparam)(struct hnae_handle *handle, 473 u32 *auto_neg, u32 *rx_en, u32 *tx_en); 474 int (*set_autoneg)(struct hnae_handle *handle, u8 enable); 475 int (*get_autoneg)(struct hnae_handle *handle); 476 int (*set_pauseparam)(struct hnae_handle *handle, 477 u32 auto_neg, u32 rx_en, u32 tx_en); 478 void (*get_coalesce_usecs)(struct hnae_handle *handle, 479 u32 *tx_usecs, u32 *rx_usecs); 480 void (*get_rx_max_coalesced_frames)(struct hnae_handle *handle, 481 u32 *tx_frames, u32 *rx_frames); 482 int (*set_coalesce_usecs)(struct hnae_handle *handle, u32 timeout); 483 int (*set_coalesce_frames)(struct hnae_handle *handle, 484 u32 coalesce_frames); 485 void (*get_coalesce_range)(struct hnae_handle *handle, 486 u32 *tx_frames_low, u32 *rx_frames_low, 487 u32 *tx_frames_high, u32 *rx_frames_high, 488 u32 *tx_usecs_low, u32 *rx_usecs_low, 489 u32 *tx_usecs_high, u32 *rx_usecs_high); 490 void (*set_promisc_mode)(struct hnae_handle *handle, u32 en); 491 int (*get_mac_addr)(struct hnae_handle *handle, void **p); 492 int (*set_mac_addr)(struct hnae_handle *handle, void *p); 493 int (*clr_mc_addr)(struct hnae_handle *handle); 494 int (*set_mc_addr)(struct hnae_handle *handle, void *addr); 495 int (*set_mtu)(struct hnae_handle *handle, int new_mtu); 496 void (*set_tso_stats)(struct hnae_handle *handle, int enable); 497 void (*update_stats)(struct hnae_handle *handle, 498 struct net_device_stats *net_stats); 499 void (*get_stats)(struct hnae_handle *handle, u64 *data); 500 void (*get_strings)(struct hnae_handle *handle, 501 u32 stringset, u8 *data); 502 int (*get_sset_count)(struct hnae_handle *handle, int stringset); 503 void (*update_led_status)(struct hnae_handle *handle); 504 int (*set_led_id)(struct hnae_handle *handle, 505 enum hnae_led_state status); 506 void (*get_regs)(struct hnae_handle *handle, void *data); 507 int (*get_regs_len)(struct hnae_handle *handle); 508 u32 (*get_rss_key_size)(struct hnae_handle *handle); 509 u32 (*get_rss_indir_size)(struct hnae_handle *handle); 510 int (*get_rss)(struct hnae_handle *handle, u32 *indir, u8 *key, 511 u8 *hfunc); 512 int (*set_rss)(struct hnae_handle *handle, const u32 *indir, 513 const u8 *key, const u8 hfunc); 514 }; 515 516 struct hnae_ae_dev { 517 struct device cls_dev; /* the class dev */ 518 struct device *dev; /* the presented dev */ 519 struct hnae_ae_ops *ops; 520 struct list_head node; 521 struct module *owner; /* the module who provides this dev */ 522 int id; 523 char name[AE_NAME_SIZE]; 524 struct list_head handle_list; 525 spinlock_t lock; /* lock to protect the handle_list */ 526 }; 527 528 struct hnae_handle { 529 struct device *owner_dev; /* the device which make use of this handle */ 530 struct hnae_ae_dev *dev; /* the device who provides this handle */ 531 struct phy_device *phy_dev; 532 phy_interface_t phy_if; 533 u32 if_support; 534 int q_num; 535 int vf_id; 536 u32 eport_id; 537 u32 dport_id; /* v2 tx bd should fill the dport_id */ 538 enum hnae_port_type port_type; 539 enum hnae_media_type media_type; 540 struct list_head node; /* list to hnae_ae_dev->handle_list */ 541 struct hnae_buf_ops *bops; /* operation for the buffer */ 542 struct hnae_queue **qs; /* array base of all queues */ 543 }; 544 545 #define ring_to_dev(ring) ((ring)->q->dev->dev) 546 547 struct hnae_handle *hnae_get_handle(struct device *owner_dev, 548 const struct fwnode_handle *fwnode, 549 u32 port_id, 550 struct hnae_buf_ops *bops); 551 552 void hnae_put_handle(struct hnae_handle *handle); 553 int hnae_ae_register(struct hnae_ae_dev *dev, struct module *owner); 554 void hnae_ae_unregister(struct hnae_ae_dev *dev); 555 556 int hnae_register_notifier(struct notifier_block *nb); 557 void hnae_unregister_notifier(struct notifier_block *nb); 558 int hnae_reinit_handle(struct hnae_handle *handle); 559 560 #define hnae_queue_xmit(q, buf_num) writel_relaxed(buf_num, \ 561 (q)->tx_ring.io_base + RCB_REG_TAIL) 562 563 #ifndef assert 564 #define assert(cond) 565 #endif 566 567 static inline int hnae_reserve_buffer_map(struct hnae_ring *ring, 568 struct hnae_desc_cb *cb) 569 { 570 struct hnae_buf_ops *bops = ring->q->handle->bops; 571 int ret; 572 573 ret = bops->alloc_buffer(ring, cb); 574 if (ret) 575 goto out; 576 577 ret = bops->map_buffer(ring, cb); 578 if (ret) 579 goto out_with_buf; 580 581 return 0; 582 583 out_with_buf: 584 bops->free_buffer(ring, cb); 585 out: 586 return ret; 587 } 588 589 static inline int hnae_alloc_buffer_attach(struct hnae_ring *ring, int i) 590 { 591 int ret = hnae_reserve_buffer_map(ring, &ring->desc_cb[i]); 592 593 if (ret) 594 return ret; 595 596 ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma); 597 598 return 0; 599 } 600 601 static inline void hnae_buffer_detach(struct hnae_ring *ring, int i) 602 { 603 ring->q->handle->bops->unmap_buffer(ring, &ring->desc_cb[i]); 604 ring->desc[i].addr = 0; 605 } 606 607 static inline void hnae_free_buffer_detach(struct hnae_ring *ring, int i) 608 { 609 struct hnae_buf_ops *bops = ring->q->handle->bops; 610 struct hnae_desc_cb *cb = &ring->desc_cb[i]; 611 612 if (!ring->desc_cb[i].dma) 613 return; 614 615 hnae_buffer_detach(ring, i); 616 bops->free_buffer(ring, cb); 617 } 618 619 /* detach a in-used buffer and replace with a reserved one */ 620 static inline void hnae_replace_buffer(struct hnae_ring *ring, int i, 621 struct hnae_desc_cb *res_cb) 622 { 623 struct hnae_buf_ops *bops = ring->q->handle->bops; 624 625 bops->unmap_buffer(ring, &ring->desc_cb[i]); 626 ring->desc_cb[i] = *res_cb; 627 ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma); 628 ring->desc[i].rx.ipoff_bnum_pid_flag = 0; 629 } 630 631 static inline void hnae_reuse_buffer(struct hnae_ring *ring, int i) 632 { 633 ring->desc_cb[i].reuse_flag = 0; 634 ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma 635 + ring->desc_cb[i].page_offset); 636 ring->desc[i].rx.ipoff_bnum_pid_flag = 0; 637 } 638 639 #define hnae_set_field(origin, mask, shift, val) \ 640 do { \ 641 (origin) &= (~(mask)); \ 642 (origin) |= ((val) << (shift)) & (mask); \ 643 } while (0) 644 645 #define hnae_set_bit(origin, shift, val) \ 646 hnae_set_field((origin), (0x1 << (shift)), (shift), (val)) 647 648 #define hnae_get_field(origin, mask, shift) (((origin) & (mask)) >> (shift)) 649 650 #define hnae_get_bit(origin, shift) \ 651 hnae_get_field((origin), (0x1 << (shift)), (shift)) 652 653 #endif 654