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 #define HNS_RX_FLAG_L4ID_SCTP 0x3 103 104 105 #define HNS_TXD_ASID_S 0 106 #define HNS_TXD_ASID_M (0xff << HNS_TXD_ASID_S) 107 #define HNS_TXD_BUFNUM_S 8 108 #define HNS_TXD_BUFNUM_M (0x3 << HNS_TXD_BUFNUM_S) 109 #define HNS_TXD_PORTID_S 10 110 #define HNS_TXD_PORTID_M (0x7 << HNS_TXD_PORTID_S) 111 112 #define HNS_TXD_RA_B 8 113 #define HNS_TXD_RI_B 9 114 #define HNS_TXD_L4CS_B 10 115 #define HNS_TXD_L3CS_B 11 116 #define HNS_TXD_FE_B 12 117 #define HNS_TXD_VLD_B 13 118 #define HNS_TXD_IPOFFSET_S 14 119 #define HNS_TXD_IPOFFSET_M (0xff << HNS_TXD_IPOFFSET_S) 120 121 #define HNS_RXD_IPOFFSET_S 0 122 #define HNS_RXD_IPOFFSET_M (0xff << HNS_TXD_IPOFFSET_S) 123 #define HNS_RXD_BUFNUM_S 8 124 #define HNS_RXD_BUFNUM_M (0x3 << HNS_RXD_BUFNUM_S) 125 #define HNS_RXD_PORTID_S 10 126 #define HNS_RXD_PORTID_M (0x7 << HNS_RXD_PORTID_S) 127 #define HNS_RXD_DMAC_S 13 128 #define HNS_RXD_DMAC_M (0x3 << HNS_RXD_DMAC_S) 129 #define HNS_RXD_VLAN_S 15 130 #define HNS_RXD_VLAN_M (0x3 << HNS_RXD_VLAN_S) 131 #define HNS_RXD_L3ID_S 17 132 #define HNS_RXD_L3ID_M (0xf << HNS_RXD_L3ID_S) 133 #define HNS_RXD_L4ID_S 21 134 #define HNS_RXD_L4ID_M (0xf << HNS_RXD_L4ID_S) 135 #define HNS_RXD_FE_B 25 136 #define HNS_RXD_FRAG_B 26 137 #define HNS_RXD_VLD_B 27 138 #define HNS_RXD_L2E_B 28 139 #define HNS_RXD_L3E_B 29 140 #define HNS_RXD_L4E_B 30 141 #define HNS_RXD_DROP_B 31 142 143 #define HNS_RXD_VLANID_S 8 144 #define HNS_RXD_VLANID_M (0xfff << HNS_RXD_VLANID_S) 145 #define HNS_RXD_CFI_B 20 146 #define HNS_RXD_PRI_S 21 147 #define HNS_RXD_PRI_M (0x7 << HNS_RXD_PRI_S) 148 #define HNS_RXD_ASID_S 24 149 #define HNS_RXD_ASID_M (0xff << HNS_RXD_ASID_S) 150 151 #define HNSV2_TXD_BUFNUM_S 0 152 #define HNSV2_TXD_BUFNUM_M (0x7 << HNSV2_TXD_BUFNUM_S) 153 #define HNSV2_TXD_PORTID_S 4 154 #define HNSV2_TXD_PORTID_M (0X7 << HNSV2_TXD_PORTID_S) 155 #define HNSV2_TXD_RI_B 1 156 #define HNSV2_TXD_L4CS_B 2 157 #define HNSV2_TXD_L3CS_B 3 158 #define HNSV2_TXD_FE_B 4 159 #define HNSV2_TXD_VLD_B 5 160 161 #define HNSV2_TXD_TSE_B 0 162 #define HNSV2_TXD_VLAN_EN_B 1 163 #define HNSV2_TXD_SNAP_B 2 164 #define HNSV2_TXD_IPV6_B 3 165 #define HNSV2_TXD_SCTP_B 4 166 167 /* hardware spec ring buffer format */ 168 struct __packed hnae_desc { 169 __le64 addr; 170 union { 171 struct { 172 union { 173 __le16 asid_bufnum_pid; 174 __le16 asid; 175 }; 176 __le16 send_size; 177 union { 178 __le32 flag_ipoffset; 179 struct { 180 __u8 bn_pid; 181 __u8 ra_ri_cs_fe_vld; 182 __u8 ip_offset; 183 __u8 tse_vlan_snap_v6_sctp_nth; 184 }; 185 }; 186 __le16 mss; 187 __u8 l4_len; 188 __u8 reserved1; 189 __le16 paylen; 190 __u8 vmid; 191 __u8 qid; 192 __le32 reserved2[2]; 193 } tx; 194 195 struct { 196 __le32 ipoff_bnum_pid_flag; 197 __le16 pkt_len; 198 __le16 size; 199 union { 200 __le32 vlan_pri_asid; 201 struct { 202 __le16 asid; 203 __le16 vlan_cfi_pri; 204 }; 205 }; 206 __le32 rss_hash; 207 __le32 reserved_1[2]; 208 } rx; 209 }; 210 }; 211 212 struct hnae_desc_cb { 213 dma_addr_t dma; /* dma address of this desc */ 214 void *buf; /* cpu addr for a desc */ 215 216 /* priv data for the desc, e.g. skb when use with ip stack*/ 217 void *priv; 218 u16 page_offset; 219 u16 reuse_flag; 220 221 u16 length; /* length of the buffer */ 222 223 /* desc type, used by the ring user to mark the type of the priv data */ 224 u16 type; 225 }; 226 227 #define setflags(flags, bits) ((flags) |= (bits)) 228 #define unsetflags(flags, bits) ((flags) &= ~(bits)) 229 230 /* hnae_ring->flags fields */ 231 #define RINGF_DIR 0x1 /* TX or RX ring, set if TX */ 232 #define is_tx_ring(ring) ((ring)->flags & RINGF_DIR) 233 #define is_rx_ring(ring) (!is_tx_ring(ring)) 234 #define ring_to_dma_dir(ring) (is_tx_ring(ring) ? \ 235 DMA_TO_DEVICE : DMA_FROM_DEVICE) 236 237 struct ring_stats { 238 u64 io_err_cnt; 239 u64 sw_err_cnt; 240 u64 seg_pkt_cnt; 241 union { 242 struct { 243 u64 tx_pkts; 244 u64 tx_bytes; 245 u64 tx_err_cnt; 246 u64 restart_queue; 247 u64 tx_busy; 248 }; 249 struct { 250 u64 rx_pkts; 251 u64 rx_bytes; 252 u64 rx_err_cnt; 253 u64 reuse_pg_cnt; 254 u64 err_pkt_len; 255 u64 non_vld_descs; 256 u64 err_bd_num; 257 u64 l2_err; 258 u64 l3l4_csum_err; 259 }; 260 }; 261 }; 262 263 struct hnae_queue; 264 265 struct hnae_ring { 266 u8 __iomem *io_base; /* base io address for the ring */ 267 struct hnae_desc *desc; /* dma map address space */ 268 struct hnae_desc_cb *desc_cb; 269 struct hnae_queue *q; 270 int irq; 271 char ring_name[RCB_RING_NAME_LEN]; 272 273 /* statistic */ 274 struct ring_stats stats; 275 276 dma_addr_t desc_dma_addr; 277 u32 buf_size; /* size for hnae_desc->addr, preset by AE */ 278 u16 desc_num; /* total number of desc */ 279 u16 max_desc_num_per_pkt; 280 u16 max_raw_data_sz_per_desc; 281 u16 max_pkt_size; 282 int next_to_use; /* idx of next spare desc */ 283 284 /* idx of lastest sent desc, the ring is empty when equal to 285 * next_to_use 286 */ 287 int next_to_clean; 288 289 int flags; /* ring attribute */ 290 int irq_init_flag; 291 }; 292 293 #define ring_ptr_move_fw(ring, p) \ 294 ((ring)->p = ((ring)->p + 1) % (ring)->desc_num) 295 #define ring_ptr_move_bw(ring, p) \ 296 ((ring)->p = ((ring)->p - 1 + (ring)->desc_num) % (ring)->desc_num) 297 298 enum hns_desc_type { 299 DESC_TYPE_SKB, 300 DESC_TYPE_PAGE, 301 }; 302 303 #define assert_is_ring_idx(ring, idx) \ 304 assert((idx) >= 0 && (idx) < (ring)->desc_num) 305 306 /* the distance between [begin, end) in a ring buffer 307 * note: there is a unuse slot between the begin and the end 308 */ 309 static inline int ring_dist(struct hnae_ring *ring, int begin, int end) 310 { 311 assert_is_ring_idx(ring, begin); 312 assert_is_ring_idx(ring, end); 313 314 return (end - begin + ring->desc_num) % ring->desc_num; 315 } 316 317 static inline int ring_space(struct hnae_ring *ring) 318 { 319 return ring->desc_num - 320 ring_dist(ring, ring->next_to_clean, ring->next_to_use) - 1; 321 } 322 323 static inline int is_ring_empty(struct hnae_ring *ring) 324 { 325 assert_is_ring_idx(ring, ring->next_to_use); 326 assert_is_ring_idx(ring, ring->next_to_clean); 327 328 return ring->next_to_use == ring->next_to_clean; 329 } 330 331 #define hnae_buf_size(_ring) ((_ring)->buf_size) 332 #define hnae_page_order(_ring) (get_order(hnae_buf_size(_ring))) 333 #define hnae_page_size(_ring) (PAGE_SIZE << hnae_page_order(_ring)) 334 335 struct hnae_handle; 336 337 /* allocate and dma map space for hnae desc */ 338 struct hnae_buf_ops { 339 int (*alloc_buffer)(struct hnae_ring *ring, struct hnae_desc_cb *cb); 340 void (*free_buffer)(struct hnae_ring *ring, struct hnae_desc_cb *cb); 341 int (*map_buffer)(struct hnae_ring *ring, struct hnae_desc_cb *cb); 342 void (*unmap_buffer)(struct hnae_ring *ring, struct hnae_desc_cb *cb); 343 }; 344 345 struct hnae_queue { 346 void __iomem *io_base; 347 phys_addr_t phy_base; 348 struct hnae_ae_dev *dev; /* the device who use this queue */ 349 struct hnae_ring rx_ring ____cacheline_internodealigned_in_smp; 350 struct hnae_ring tx_ring ____cacheline_internodealigned_in_smp; 351 struct hnae_handle *handle; 352 }; 353 354 /*hnae loop mode*/ 355 enum hnae_loop { 356 MAC_INTERNALLOOP_MAC = 0, 357 MAC_INTERNALLOOP_SERDES, 358 MAC_INTERNALLOOP_PHY, 359 MAC_LOOP_NONE, 360 }; 361 362 /*hnae port type*/ 363 enum hnae_port_type { 364 HNAE_PORT_SERVICE = 0, 365 HNAE_PORT_DEBUG 366 }; 367 368 /* mac media type */ 369 enum hnae_media_type { 370 HNAE_MEDIA_TYPE_UNKNOWN = 0, 371 HNAE_MEDIA_TYPE_FIBER, 372 HNAE_MEDIA_TYPE_COPPER, 373 HNAE_MEDIA_TYPE_BACKPLANE, 374 }; 375 376 /* This struct defines the operation on the handle. 377 * 378 * get_handle(): (mandatory) 379 * Get a handle from AE according to its name and options. 380 * the AE driver should manage the space used by handle and its queues while 381 * the HNAE framework will allocate desc and desc_cb for all rings in the 382 * queues. 383 * put_handle(): 384 * Release the handle. 385 * start(): 386 * Enable the hardware, include all queues 387 * stop(): 388 * Disable the hardware 389 * set_opts(): (mandatory) 390 * Set options to the AE 391 * get_opts(): (mandatory) 392 * Get options from the AE 393 * get_status(): 394 * Get the carrier state of the back channel of the handle, 1 for ok, 0 for 395 * non-ok 396 * toggle_ring_irq(): (mandatory) 397 * Set the ring irq to be enabled(0) or disable(1) 398 * toggle_queue_status(): (mandatory) 399 * Set the queue to be enabled(1) or disable(0), this will not change the 400 * ring irq state 401 * adjust_link() 402 * adjust link status 403 * set_loopback() 404 * set loopback 405 * get_ring_bdnum_limit() 406 * get ring bd number limit 407 * get_pauseparam() 408 * get tx and rx of pause frame use 409 * set_autoneg() 410 * set auto autonegotiation of pause frame use 411 * get_autoneg() 412 * get auto autonegotiation of pause frame use 413 * set_pauseparam() 414 * set tx and rx of pause frame use 415 * get_coalesce_usecs() 416 * get usecs to delay a TX interrupt after a packet is sent 417 * get_rx_max_coalesced_frames() 418 * get Maximum number of packets to be sent before a TX interrupt. 419 * set_coalesce_usecs() 420 * set usecs to delay a TX interrupt after a packet is sent 421 * set_coalesce_frames() 422 * set Maximum number of packets to be sent before a TX interrupt. 423 * get_ringnum() 424 * get RX/TX ring number 425 * get_max_ringnum() 426 * get RX/TX ring maximum number 427 * get_mac_addr() 428 * get mac address 429 * set_mac_addr() 430 * set mac address 431 * clr_mc_addr() 432 * clear mcast tcam table 433 * set_mc_addr() 434 * set multicast mode 435 * add_uc_addr() 436 * add ucast address 437 * rm_uc_addr() 438 * remove ucast address 439 * set_mtu() 440 * set mtu 441 * update_stats() 442 * update Old network device statistics 443 * get_ethtool_stats() 444 * get ethtool network device statistics 445 * get_strings() 446 * get a set of strings that describe the requested objects 447 * get_sset_count() 448 * get number of strings that @get_strings will write 449 * update_led_status() 450 * update the led status 451 * set_led_id() 452 * set led id 453 * get_regs() 454 * get regs dump 455 * get_regs_len() 456 * get the len of the regs dump 457 */ 458 struct hnae_ae_ops { 459 struct hnae_handle *(*get_handle)(struct hnae_ae_dev *dev, 460 u32 port_id); 461 void (*put_handle)(struct hnae_handle *handle); 462 void (*init_queue)(struct hnae_queue *q); 463 void (*fini_queue)(struct hnae_queue *q); 464 int (*start)(struct hnae_handle *handle); 465 void (*stop)(struct hnae_handle *handle); 466 void (*reset)(struct hnae_handle *handle); 467 int (*set_opts)(struct hnae_handle *handle, int type, void *opts); 468 int (*get_opts)(struct hnae_handle *handle, int type, void **opts); 469 int (*get_status)(struct hnae_handle *handle); 470 int (*get_info)(struct hnae_handle *handle, 471 u8 *auto_neg, u16 *speed, u8 *duplex); 472 void (*toggle_ring_irq)(struct hnae_ring *ring, u32 val); 473 void (*adjust_link)(struct hnae_handle *handle, int speed, int duplex); 474 int (*set_loopback)(struct hnae_handle *handle, 475 enum hnae_loop loop_mode, int en); 476 void (*get_ring_bdnum_limit)(struct hnae_queue *queue, 477 u32 *uplimit); 478 void (*get_pauseparam)(struct hnae_handle *handle, 479 u32 *auto_neg, u32 *rx_en, u32 *tx_en); 480 int (*set_autoneg)(struct hnae_handle *handle, u8 enable); 481 int (*get_autoneg)(struct hnae_handle *handle); 482 int (*set_pauseparam)(struct hnae_handle *handle, 483 u32 auto_neg, u32 rx_en, u32 tx_en); 484 void (*get_coalesce_usecs)(struct hnae_handle *handle, 485 u32 *tx_usecs, u32 *rx_usecs); 486 void (*get_rx_max_coalesced_frames)(struct hnae_handle *handle, 487 u32 *tx_frames, u32 *rx_frames); 488 int (*set_coalesce_usecs)(struct hnae_handle *handle, u32 timeout); 489 int (*set_coalesce_frames)(struct hnae_handle *handle, 490 u32 coalesce_frames); 491 void (*get_coalesce_range)(struct hnae_handle *handle, 492 u32 *tx_frames_low, u32 *rx_frames_low, 493 u32 *tx_frames_high, u32 *rx_frames_high, 494 u32 *tx_usecs_low, u32 *rx_usecs_low, 495 u32 *tx_usecs_high, u32 *rx_usecs_high); 496 void (*set_promisc_mode)(struct hnae_handle *handle, u32 en); 497 int (*get_mac_addr)(struct hnae_handle *handle, void **p); 498 int (*set_mac_addr)(struct hnae_handle *handle, void *p); 499 int (*add_uc_addr)(struct hnae_handle *handle, 500 const unsigned char *addr); 501 int (*rm_uc_addr)(struct hnae_handle *handle, 502 const unsigned char *addr); 503 int (*clr_mc_addr)(struct hnae_handle *handle); 504 int (*set_mc_addr)(struct hnae_handle *handle, void *addr); 505 int (*set_mtu)(struct hnae_handle *handle, int new_mtu); 506 void (*set_tso_stats)(struct hnae_handle *handle, int enable); 507 void (*update_stats)(struct hnae_handle *handle, 508 struct net_device_stats *net_stats); 509 void (*get_stats)(struct hnae_handle *handle, u64 *data); 510 void (*get_strings)(struct hnae_handle *handle, 511 u32 stringset, u8 *data); 512 int (*get_sset_count)(struct hnae_handle *handle, int stringset); 513 void (*update_led_status)(struct hnae_handle *handle); 514 int (*set_led_id)(struct hnae_handle *handle, 515 enum hnae_led_state status); 516 void (*get_regs)(struct hnae_handle *handle, void *data); 517 int (*get_regs_len)(struct hnae_handle *handle); 518 u32 (*get_rss_key_size)(struct hnae_handle *handle); 519 u32 (*get_rss_indir_size)(struct hnae_handle *handle); 520 int (*get_rss)(struct hnae_handle *handle, u32 *indir, u8 *key, 521 u8 *hfunc); 522 int (*set_rss)(struct hnae_handle *handle, const u32 *indir, 523 const u8 *key, const u8 hfunc); 524 }; 525 526 struct hnae_ae_dev { 527 struct device cls_dev; /* the class dev */ 528 struct device *dev; /* the presented dev */ 529 struct hnae_ae_ops *ops; 530 struct list_head node; 531 struct module *owner; /* the module who provides this dev */ 532 int id; 533 char name[AE_NAME_SIZE]; 534 struct list_head handle_list; 535 spinlock_t lock; /* lock to protect the handle_list */ 536 }; 537 538 struct hnae_handle { 539 struct device *owner_dev; /* the device which make use of this handle */ 540 struct hnae_ae_dev *dev; /* the device who provides this handle */ 541 struct phy_device *phy_dev; 542 phy_interface_t phy_if; 543 u32 if_support; 544 int q_num; 545 int vf_id; 546 u32 eport_id; 547 u32 dport_id; /* v2 tx bd should fill the dport_id */ 548 enum hnae_port_type port_type; 549 enum hnae_media_type media_type; 550 struct list_head node; /* list to hnae_ae_dev->handle_list */ 551 struct hnae_buf_ops *bops; /* operation for the buffer */ 552 struct hnae_queue **qs; /* array base of all queues */ 553 }; 554 555 #define ring_to_dev(ring) ((ring)->q->dev->dev) 556 557 struct hnae_handle *hnae_get_handle(struct device *owner_dev, 558 const struct fwnode_handle *fwnode, 559 u32 port_id, 560 struct hnae_buf_ops *bops); 561 562 void hnae_put_handle(struct hnae_handle *handle); 563 int hnae_ae_register(struct hnae_ae_dev *dev, struct module *owner); 564 void hnae_ae_unregister(struct hnae_ae_dev *dev); 565 566 int hnae_register_notifier(struct notifier_block *nb); 567 void hnae_unregister_notifier(struct notifier_block *nb); 568 int hnae_reinit_handle(struct hnae_handle *handle); 569 570 #define hnae_queue_xmit(q, buf_num) writel_relaxed(buf_num, \ 571 (q)->tx_ring.io_base + RCB_REG_TAIL) 572 573 #ifndef assert 574 #define assert(cond) 575 #endif 576 577 static inline int hnae_reserve_buffer_map(struct hnae_ring *ring, 578 struct hnae_desc_cb *cb) 579 { 580 struct hnae_buf_ops *bops = ring->q->handle->bops; 581 int ret; 582 583 ret = bops->alloc_buffer(ring, cb); 584 if (ret) 585 goto out; 586 587 ret = bops->map_buffer(ring, cb); 588 if (ret) 589 goto out_with_buf; 590 591 return 0; 592 593 out_with_buf: 594 bops->free_buffer(ring, cb); 595 out: 596 return ret; 597 } 598 599 static inline int hnae_alloc_buffer_attach(struct hnae_ring *ring, int i) 600 { 601 int ret = hnae_reserve_buffer_map(ring, &ring->desc_cb[i]); 602 603 if (ret) 604 return ret; 605 606 ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma); 607 608 return 0; 609 } 610 611 static inline void hnae_buffer_detach(struct hnae_ring *ring, int i) 612 { 613 ring->q->handle->bops->unmap_buffer(ring, &ring->desc_cb[i]); 614 ring->desc[i].addr = 0; 615 } 616 617 static inline void hnae_free_buffer_detach(struct hnae_ring *ring, int i) 618 { 619 struct hnae_buf_ops *bops = ring->q->handle->bops; 620 struct hnae_desc_cb *cb = &ring->desc_cb[i]; 621 622 if (!ring->desc_cb[i].dma) 623 return; 624 625 hnae_buffer_detach(ring, i); 626 bops->free_buffer(ring, cb); 627 } 628 629 /* detach a in-used buffer and replace with a reserved one */ 630 static inline void hnae_replace_buffer(struct hnae_ring *ring, int i, 631 struct hnae_desc_cb *res_cb) 632 { 633 struct hnae_buf_ops *bops = ring->q->handle->bops; 634 635 bops->unmap_buffer(ring, &ring->desc_cb[i]); 636 ring->desc_cb[i] = *res_cb; 637 ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma); 638 ring->desc[i].rx.ipoff_bnum_pid_flag = 0; 639 } 640 641 static inline void hnae_reuse_buffer(struct hnae_ring *ring, int i) 642 { 643 ring->desc_cb[i].reuse_flag = 0; 644 ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma 645 + ring->desc_cb[i].page_offset); 646 ring->desc[i].rx.ipoff_bnum_pid_flag = 0; 647 } 648 649 #define hnae_set_field(origin, mask, shift, val) \ 650 do { \ 651 (origin) &= (~(mask)); \ 652 (origin) |= ((val) << (shift)) & (mask); \ 653 } while (0) 654 655 #define hnae_set_bit(origin, shift, val) \ 656 hnae_set_field((origin), (0x1 << (shift)), (shift), (val)) 657 658 #define hnae_get_field(origin, mask, shift) (((origin) & (mask)) >> (shift)) 659 660 #define hnae_get_bit(origin, shift) \ 661 hnae_get_field((origin), (0x1 << (shift)), (shift)) 662 663 #endif 664