1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Copyright (c) 2014-2015 Hisilicon Limited. 4 */ 5 6 #ifndef __HNAE_H 7 #define __HNAE_H 8 9 /* Names used in this framework: 10 * ae handle (handle): 11 * a set of queues provided by AE 12 * ring buffer queue (rbq): 13 * the channel between upper layer and the AE, can do tx and rx 14 * ring: 15 * a tx or rx channel within a rbq 16 * ring description (desc): 17 * an element in the ring with packet information 18 * buffer: 19 * a memory region referred by desc with the full packet payload 20 * 21 * "num" means a static number set as a parameter, "count" mean a dynamic 22 * number set while running 23 * "cb" means control block 24 */ 25 26 #include <linux/acpi.h> 27 #include <linux/delay.h> 28 #include <linux/device.h> 29 #include <linux/module.h> 30 #include <linux/netdevice.h> 31 #include <linux/notifier.h> 32 #include <linux/phy.h> 33 #include <linux/types.h> 34 35 #define HNAE_DRIVER_VERSION "2.0" 36 #define HNAE_DRIVER_NAME "hns" 37 #define HNAE_COPYRIGHT "Copyright(c) 2015 Huawei Corporation." 38 #define HNAE_DRIVER_STRING "Hisilicon Network Subsystem Driver" 39 #define HNAE_DEFAULT_DEVICE_DESCR "Hisilicon Network Subsystem" 40 41 #ifdef DEBUG 42 43 #ifndef assert 44 #define assert(expr) \ 45 do { \ 46 if (!(expr)) { \ 47 pr_err("Assertion failed! %s, %s, %s, line %d\n", \ 48 #expr, __FILE__, __func__, __LINE__); \ 49 } \ 50 } while (0) 51 #endif 52 53 #else 54 55 #ifndef assert 56 #define assert(expr) 57 #endif 58 59 #endif 60 61 #define AE_VERSION_1 ('6' << 16 | '6' << 8 | '0') 62 #define AE_VERSION_2 ('1' << 24 | '6' << 16 | '1' << 8 | '0') 63 #define AE_IS_VER1(ver) ((ver) == AE_VERSION_1) 64 #define AE_NAME_SIZE 16 65 66 #define BD_SIZE_2048_MAX_MTU 6000 67 68 /* some said the RX and TX RCB format should not be the same in the future. But 69 * it is the same now... 70 */ 71 #define RCB_REG_BASEADDR_L 0x00 /* P660 support only 32bit accessing */ 72 #define RCB_REG_BASEADDR_H 0x04 73 #define RCB_REG_BD_NUM 0x08 74 #define RCB_REG_BD_LEN 0x0C 75 #define RCB_REG_PKTLINE 0x10 76 #define RCB_REG_TAIL 0x18 77 #define RCB_REG_HEAD 0x1C 78 #define RCB_REG_FBDNUM 0x20 79 #define RCB_REG_OFFSET 0x24 /* pkt num to be handled */ 80 #define RCB_REG_PKTNUM_RECORD 0x2C /* total pkt received */ 81 82 #define HNS_RX_HEAD_SIZE 256 83 84 #define HNAE_AE_REGISTER 0x1 85 86 #define RCB_RING_NAME_LEN (IFNAMSIZ + 4) 87 88 #define HNAE_LOWEST_LATENCY_COAL_PARAM 30 89 #define HNAE_LOW_LATENCY_COAL_PARAM 80 90 #define HNAE_BULK_LATENCY_COAL_PARAM 150 91 92 enum hnae_led_state { 93 HNAE_LED_INACTIVE, 94 HNAE_LED_ACTIVE, 95 HNAE_LED_ON, 96 HNAE_LED_OFF 97 }; 98 99 #define HNS_RX_FLAG_VLAN_PRESENT 0x1 100 #define HNS_RX_FLAG_L3ID_IPV4 0x0 101 #define HNS_RX_FLAG_L3ID_IPV6 0x1 102 #define HNS_RX_FLAG_L4ID_UDP 0x0 103 #define HNS_RX_FLAG_L4ID_TCP 0x1 104 #define HNS_RX_FLAG_L4ID_SCTP 0x3 105 106 #define HNS_TXD_ASID_S 0 107 #define HNS_TXD_ASID_M (0xff << HNS_TXD_ASID_S) 108 #define HNS_TXD_BUFNUM_S 8 109 #define HNS_TXD_BUFNUM_M (0x3 << HNS_TXD_BUFNUM_S) 110 #define HNS_TXD_PORTID_S 10 111 #define HNS_TXD_PORTID_M (0x7 << HNS_TXD_PORTID_S) 112 113 #define HNS_TXD_RA_B 8 114 #define HNS_TXD_RI_B 9 115 #define HNS_TXD_L4CS_B 10 116 #define HNS_TXD_L3CS_B 11 117 #define HNS_TXD_FE_B 12 118 #define HNS_TXD_VLD_B 13 119 #define HNS_TXD_IPOFFSET_S 14 120 #define HNS_TXD_IPOFFSET_M (0xff << HNS_TXD_IPOFFSET_S) 121 122 #define HNS_RXD_IPOFFSET_S 0 123 #define HNS_RXD_IPOFFSET_M (0xff << HNS_TXD_IPOFFSET_S) 124 #define HNS_RXD_BUFNUM_S 8 125 #define HNS_RXD_BUFNUM_M (0x3 << HNS_RXD_BUFNUM_S) 126 #define HNS_RXD_PORTID_S 10 127 #define HNS_RXD_PORTID_M (0x7 << HNS_RXD_PORTID_S) 128 #define HNS_RXD_DMAC_S 13 129 #define HNS_RXD_DMAC_M (0x3 << HNS_RXD_DMAC_S) 130 #define HNS_RXD_VLAN_S 15 131 #define HNS_RXD_VLAN_M (0x3 << HNS_RXD_VLAN_S) 132 #define HNS_RXD_L3ID_S 17 133 #define HNS_RXD_L3ID_M (0xf << HNS_RXD_L3ID_S) 134 #define HNS_RXD_L4ID_S 21 135 #define HNS_RXD_L4ID_M (0xf << HNS_RXD_L4ID_S) 136 #define HNS_RXD_FE_B 25 137 #define HNS_RXD_FRAG_B 26 138 #define HNS_RXD_VLD_B 27 139 #define HNS_RXD_L2E_B 28 140 #define HNS_RXD_L3E_B 29 141 #define HNS_RXD_L4E_B 30 142 #define HNS_RXD_DROP_B 31 143 144 #define HNS_RXD_VLANID_S 8 145 #define HNS_RXD_VLANID_M (0xfff << HNS_RXD_VLANID_S) 146 #define HNS_RXD_CFI_B 20 147 #define HNS_RXD_PRI_S 21 148 #define HNS_RXD_PRI_M (0x7 << HNS_RXD_PRI_S) 149 #define HNS_RXD_ASID_S 24 150 #define HNS_RXD_ASID_M (0xff << HNS_RXD_ASID_S) 151 152 #define HNSV2_TXD_BUFNUM_S 0 153 #define HNSV2_TXD_BUFNUM_M (0x7 << HNSV2_TXD_BUFNUM_S) 154 #define HNSV2_TXD_PORTID_S 4 155 #define HNSV2_TXD_PORTID_M (0X7 << HNSV2_TXD_PORTID_S) 156 #define HNSV2_TXD_RI_B 1 157 #define HNSV2_TXD_L4CS_B 2 158 #define HNSV2_TXD_L3CS_B 3 159 #define HNSV2_TXD_FE_B 4 160 #define HNSV2_TXD_VLD_B 5 161 162 #define HNSV2_TXD_TSE_B 0 163 #define HNSV2_TXD_VLAN_EN_B 1 164 #define HNSV2_TXD_SNAP_B 2 165 #define HNSV2_TXD_IPV6_B 3 166 #define HNSV2_TXD_SCTP_B 4 167 168 /* hardware spec ring buffer format */ 169 struct __packed hnae_desc { 170 __le64 addr; 171 union { 172 struct { 173 union { 174 __le16 asid_bufnum_pid; 175 __le16 asid; 176 }; 177 __le16 send_size; 178 union { 179 __le32 flag_ipoffset; 180 struct { 181 __u8 bn_pid; 182 __u8 ra_ri_cs_fe_vld; 183 __u8 ip_offset; 184 __u8 tse_vlan_snap_v6_sctp_nth; 185 }; 186 }; 187 __le16 mss; 188 __u8 l4_len; 189 __u8 reserved1; 190 __le16 paylen; 191 __u8 vmid; 192 __u8 qid; 193 __le32 reserved2[2]; 194 } tx; 195 196 struct { 197 __le32 ipoff_bnum_pid_flag; 198 __le16 pkt_len; 199 __le16 size; 200 union { 201 __le32 vlan_pri_asid; 202 struct { 203 __le16 asid; 204 __le16 vlan_cfi_pri; 205 }; 206 }; 207 __le32 rss_hash; 208 __le32 reserved_1[2]; 209 } rx; 210 }; 211 }; 212 213 struct hnae_desc_cb { 214 dma_addr_t dma; /* dma address of this desc */ 215 void *buf; /* cpu addr for a desc */ 216 217 /* priv data for the desc, e.g. skb when use with ip stack*/ 218 void *priv; 219 u32 page_offset; 220 u32 length; /* length of the buffer */ 221 222 u16 reuse_flag; 223 224 /* desc type, used by the ring user to mark the type of the priv data */ 225 u16 type; 226 }; 227 228 #define setflags(flags, bits) ((flags) |= (bits)) 229 #define unsetflags(flags, bits) ((flags) &= ~(bits)) 230 231 /* hnae_ring->flags fields */ 232 #define RINGF_DIR 0x1 /* TX or RX ring, set if TX */ 233 #define is_tx_ring(ring) ((ring)->flags & RINGF_DIR) 234 #define is_rx_ring(ring) (!is_tx_ring(ring)) 235 #define ring_to_dma_dir(ring) (is_tx_ring(ring) ? \ 236 DMA_TO_DEVICE : DMA_FROM_DEVICE) 237 238 struct ring_stats { 239 u64 io_err_cnt; 240 u64 sw_err_cnt; 241 u64 seg_pkt_cnt; 242 union { 243 struct { 244 u64 tx_pkts; 245 u64 tx_bytes; 246 u64 tx_err_cnt; 247 u64 restart_queue; 248 u64 tx_busy; 249 }; 250 struct { 251 u64 rx_pkts; 252 u64 rx_bytes; 253 u64 rx_err_cnt; 254 u64 reuse_pg_cnt; 255 u64 err_pkt_len; 256 u64 non_vld_descs; 257 u64 err_bd_num; 258 u64 l2_err; 259 u64 l3l4_csum_err; 260 }; 261 }; 262 }; 263 264 struct hnae_queue; 265 266 struct hnae_ring { 267 u8 __iomem *io_base; /* base io address for the ring */ 268 struct hnae_desc *desc; /* dma map address space */ 269 struct hnae_desc_cb *desc_cb; 270 struct hnae_queue *q; 271 int irq; 272 char ring_name[RCB_RING_NAME_LEN]; 273 274 /* statistic */ 275 struct ring_stats stats; 276 277 dma_addr_t desc_dma_addr; 278 u32 buf_size; /* size for hnae_desc->addr, preset by AE */ 279 u16 desc_num; /* total number of desc */ 280 u16 max_desc_num_per_pkt; 281 u16 max_raw_data_sz_per_desc; 282 u16 max_pkt_size; 283 int next_to_use; /* idx of next spare desc */ 284 285 /* idx of lastest sent desc, the ring is empty when equal to 286 * next_to_use 287 */ 288 int next_to_clean; 289 290 int flags; /* ring attribute */ 291 int irq_init_flag; 292 293 /* total rx bytes after last rx rate calucated */ 294 u64 coal_last_rx_bytes; 295 unsigned long coal_last_jiffies; 296 u32 coal_param; 297 u32 coal_rx_rate; /* rx rate in MB */ 298 }; 299 300 #define ring_ptr_move_fw(ring, p) \ 301 ((ring)->p = ((ring)->p + 1) % (ring)->desc_num) 302 #define ring_ptr_move_bw(ring, p) \ 303 ((ring)->p = ((ring)->p - 1 + (ring)->desc_num) % (ring)->desc_num) 304 305 enum hns_desc_type { 306 DESC_TYPE_SKB, 307 DESC_TYPE_PAGE, 308 }; 309 310 #define assert_is_ring_idx(ring, idx) \ 311 assert((idx) >= 0 && (idx) < (ring)->desc_num) 312 313 /* the distance between [begin, end) in a ring buffer 314 * note: there is a unuse slot between the begin and the end 315 */ ring_dist(struct hnae_ring * ring,int begin,int end)316 static inline int ring_dist(struct hnae_ring *ring, int begin, int end) 317 { 318 assert_is_ring_idx(ring, begin); 319 assert_is_ring_idx(ring, end); 320 321 return (end - begin + ring->desc_num) % ring->desc_num; 322 } 323 ring_space(struct hnae_ring * ring)324 static inline int ring_space(struct hnae_ring *ring) 325 { 326 return ring->desc_num - 327 ring_dist(ring, ring->next_to_clean, ring->next_to_use) - 1; 328 } 329 is_ring_empty(struct hnae_ring * ring)330 static inline int is_ring_empty(struct hnae_ring *ring) 331 { 332 assert_is_ring_idx(ring, ring->next_to_use); 333 assert_is_ring_idx(ring, ring->next_to_clean); 334 335 return ring->next_to_use == ring->next_to_clean; 336 } 337 338 #define hnae_buf_size(_ring) ((_ring)->buf_size) 339 #define hnae_page_order(_ring) (get_order(hnae_buf_size(_ring))) 340 #define hnae_page_size(_ring) (PAGE_SIZE << hnae_page_order(_ring)) 341 342 struct hnae_handle; 343 344 /* allocate and dma map space for hnae desc */ 345 struct hnae_buf_ops { 346 int (*alloc_buffer)(struct hnae_ring *ring, struct hnae_desc_cb *cb); 347 void (*free_buffer)(struct hnae_ring *ring, struct hnae_desc_cb *cb); 348 int (*map_buffer)(struct hnae_ring *ring, struct hnae_desc_cb *cb); 349 void (*unmap_buffer)(struct hnae_ring *ring, struct hnae_desc_cb *cb); 350 }; 351 352 struct hnae_queue { 353 u8 __iomem *io_base; 354 phys_addr_t phy_base; 355 struct hnae_ae_dev *dev; /* the device who use this queue */ 356 struct hnae_ring rx_ring ____cacheline_internodealigned_in_smp; 357 struct hnae_ring tx_ring ____cacheline_internodealigned_in_smp; 358 struct hnae_handle *handle; 359 }; 360 361 /*hnae loop mode*/ 362 enum hnae_loop { 363 MAC_INTERNALLOOP_MAC = 0, 364 MAC_INTERNALLOOP_SERDES, 365 MAC_INTERNALLOOP_PHY, 366 MAC_LOOP_PHY_NONE, 367 MAC_LOOP_NONE, 368 }; 369 370 /*hnae port type*/ 371 enum hnae_port_type { 372 HNAE_PORT_SERVICE = 0, 373 HNAE_PORT_DEBUG 374 }; 375 376 /* mac media type */ 377 enum hnae_media_type { 378 HNAE_MEDIA_TYPE_UNKNOWN = 0, 379 HNAE_MEDIA_TYPE_FIBER, 380 HNAE_MEDIA_TYPE_COPPER, 381 HNAE_MEDIA_TYPE_BACKPLANE, 382 }; 383 384 /* This struct defines the operation on the handle. 385 * 386 * get_handle(): (mandatory) 387 * Get a handle from AE according to its name and options. 388 * the AE driver should manage the space used by handle and its queues while 389 * the HNAE framework will allocate desc and desc_cb for all rings in the 390 * queues. 391 * put_handle(): 392 * Release the handle. 393 * start(): 394 * Enable the hardware, include all queues 395 * stop(): 396 * Disable the hardware 397 * set_opts(): (mandatory) 398 * Set options to the AE 399 * get_opts(): (mandatory) 400 * Get options from the AE 401 * get_status(): 402 * Get the carrier state of the back channel of the handle, 1 for ok, 0 for 403 * non-ok 404 * toggle_ring_irq(): (mandatory) 405 * Set the ring irq to be enabled(0) or disable(1) 406 * toggle_queue_status(): (mandatory) 407 * Set the queue to be enabled(1) or disable(0), this will not change the 408 * ring irq state 409 * adjust_link() 410 * adjust link status 411 * set_loopback() 412 * set loopback 413 * get_ring_bdnum_limit() 414 * get ring bd number limit 415 * get_pauseparam() 416 * get tx and rx of pause frame use 417 * set_pauseparam() 418 * set tx and rx of pause frame use 419 * get_coalesce_usecs() 420 * get usecs to delay a TX interrupt after a packet is sent 421 * get_rx_max_coalesced_frames() 422 * get Maximum number of packets to be sent before a TX interrupt. 423 * set_coalesce_usecs() 424 * set usecs to delay a TX interrupt after a packet is sent 425 * set_coalesce_frames() 426 * set Maximum number of packets to be sent before a TX interrupt. 427 * get_ringnum() 428 * get RX/TX ring number 429 * get_max_ringnum() 430 * get RX/TX ring maximum number 431 * get_mac_addr() 432 * get mac address 433 * set_mac_addr() 434 * set mac address 435 * clr_mc_addr() 436 * clear mcast tcam table 437 * set_mc_addr() 438 * set multicast mode 439 * add_uc_addr() 440 * add ucast address 441 * rm_uc_addr() 442 * remove ucast address 443 * set_mtu() 444 * set mtu 445 * update_stats() 446 * update Old network device statistics 447 * get_ethtool_stats() 448 * get ethtool network device statistics 449 * get_strings() 450 * get a set of strings that describe the requested objects 451 * get_sset_count() 452 * get number of strings that @get_strings will write 453 * update_led_status() 454 * update the led status 455 * set_led_id() 456 * set led id 457 * get_regs() 458 * get regs dump 459 * get_regs_len() 460 * get the len of the regs dump 461 */ 462 struct hnae_ae_ops { 463 struct hnae_handle *(*get_handle)(struct hnae_ae_dev *dev, 464 u32 port_id); 465 void (*put_handle)(struct hnae_handle *handle); 466 void (*init_queue)(struct hnae_queue *q); 467 void (*fini_queue)(struct hnae_queue *q); 468 int (*start)(struct hnae_handle *handle); 469 void (*stop)(struct hnae_handle *handle); 470 void (*reset)(struct hnae_handle *handle); 471 int (*set_opts)(struct hnae_handle *handle, int type, void *opts); 472 int (*get_opts)(struct hnae_handle *handle, int type, void **opts); 473 int (*get_status)(struct hnae_handle *handle); 474 int (*get_info)(struct hnae_handle *handle, 475 u8 *auto_neg, u16 *speed, u8 *duplex); 476 void (*toggle_ring_irq)(struct hnae_ring *ring, u32 val); 477 void (*adjust_link)(struct hnae_handle *handle, int speed, int duplex); 478 bool (*need_adjust_link)(struct hnae_handle *handle, 479 int speed, int duplex); 480 int (*set_loopback)(struct hnae_handle *handle, 481 enum hnae_loop loop_mode, int en); 482 void (*get_ring_bdnum_limit)(struct hnae_queue *queue, 483 u32 *uplimit); 484 void (*get_pauseparam)(struct hnae_handle *handle, 485 u32 *auto_neg, u32 *rx_en, u32 *tx_en); 486 int (*set_pauseparam)(struct hnae_handle *handle, 487 u32 auto_neg, u32 rx_en, u32 tx_en); 488 void (*get_coalesce_usecs)(struct hnae_handle *handle, 489 u32 *tx_usecs, u32 *rx_usecs); 490 void (*get_max_coalesced_frames)(struct hnae_handle *handle, 491 u32 *tx_frames, u32 *rx_frames); 492 int (*set_coalesce_usecs)(struct hnae_handle *handle, u32 timeout); 493 int (*set_coalesce_frames)(struct hnae_handle *handle, 494 u32 tx_frames, u32 rx_frames); 495 void (*get_coalesce_range)(struct hnae_handle *handle, 496 u32 *tx_frames_low, u32 *rx_frames_low, 497 u32 *tx_frames_high, u32 *rx_frames_high, 498 u32 *tx_usecs_low, u32 *rx_usecs_low, 499 u32 *tx_usecs_high, u32 *rx_usecs_high); 500 void (*set_promisc_mode)(struct hnae_handle *handle, u32 en); 501 int (*get_mac_addr)(struct hnae_handle *handle, void **p); 502 int (*set_mac_addr)(struct hnae_handle *handle, const void *p); 503 int (*add_uc_addr)(struct hnae_handle *handle, 504 const unsigned char *addr); 505 int (*rm_uc_addr)(struct hnae_handle *handle, 506 const unsigned char *addr); 507 int (*clr_mc_addr)(struct hnae_handle *handle); 508 int (*set_mc_addr)(struct hnae_handle *handle, void *addr); 509 int (*set_mtu)(struct hnae_handle *handle, int new_mtu); 510 void (*set_tso_stats)(struct hnae_handle *handle, int enable); 511 void (*update_stats)(struct hnae_handle *handle, 512 struct net_device_stats *net_stats); 513 void (*get_stats)(struct hnae_handle *handle, u64 *data); 514 void (*get_strings)(struct hnae_handle *handle, 515 u32 stringset, u8 *data); 516 int (*get_sset_count)(struct hnae_handle *handle, int stringset); 517 void (*update_led_status)(struct hnae_handle *handle); 518 int (*set_led_id)(struct hnae_handle *handle, 519 enum hnae_led_state status); 520 void (*get_regs)(struct hnae_handle *handle, void *data); 521 int (*get_regs_len)(struct hnae_handle *handle); 522 u32 (*get_rss_key_size)(struct hnae_handle *handle); 523 u32 (*get_rss_indir_size)(struct hnae_handle *handle); 524 int (*get_rss)(struct hnae_handle *handle, u32 *indir, u8 *key, 525 u8 *hfunc); 526 int (*set_rss)(struct hnae_handle *handle, const u32 *indir, 527 const u8 *key, const u8 hfunc); 528 }; 529 530 struct hnae_ae_dev { 531 struct device cls_dev; /* the class dev */ 532 struct device *dev; /* the presented dev */ 533 struct hnae_ae_ops *ops; 534 struct list_head node; 535 struct module *owner; /* the module who provides this dev */ 536 int id; 537 char name[AE_NAME_SIZE]; 538 struct list_head handle_list; 539 spinlock_t lock; /* lock to protect the handle_list */ 540 }; 541 542 struct hnae_handle { 543 struct device *owner_dev; /* the device which make use of this handle */ 544 struct hnae_ae_dev *dev; /* the device who provides this handle */ 545 struct phy_device *phy_dev; 546 phy_interface_t phy_if; 547 u32 if_support; 548 int q_num; 549 int vf_id; 550 unsigned long coal_last_jiffies; 551 u32 coal_param; /* self adapt coalesce param */ 552 /* the ring index of last ring that set coal param */ 553 u32 coal_ring_idx; 554 u32 eport_id; 555 u32 dport_id; /* v2 tx bd should fill the dport_id */ 556 bool coal_adapt_en; 557 enum hnae_port_type port_type; 558 enum hnae_media_type media_type; 559 struct list_head node; /* list to hnae_ae_dev->handle_list */ 560 struct hnae_buf_ops *bops; /* operation for the buffer */ 561 struct hnae_queue *qs[]; /* flexible array of all queues */ 562 }; 563 564 #define ring_to_dev(ring) ((ring)->q->dev->dev) 565 566 struct hnae_handle *hnae_get_handle(struct device *owner_dev, 567 const struct fwnode_handle *fwnode, 568 u32 port_id, 569 struct hnae_buf_ops *bops); 570 571 void hnae_put_handle(struct hnae_handle *handle); 572 int hnae_ae_register(struct hnae_ae_dev *dev, struct module *owner); 573 void hnae_ae_unregister(struct hnae_ae_dev *dev); 574 575 int hnae_register_notifier(struct notifier_block *nb); 576 void hnae_unregister_notifier(struct notifier_block *nb); 577 int hnae_reinit_handle(struct hnae_handle *handle); 578 579 #define hnae_queue_xmit(q, buf_num) writel_relaxed(buf_num, \ 580 (q)->tx_ring.io_base + RCB_REG_TAIL) 581 582 #ifndef assert 583 #define assert(cond) 584 #endif 585 hnae_reserve_buffer_map(struct hnae_ring * ring,struct hnae_desc_cb * cb)586 static inline int hnae_reserve_buffer_map(struct hnae_ring *ring, 587 struct hnae_desc_cb *cb) 588 { 589 struct hnae_buf_ops *bops = ring->q->handle->bops; 590 int ret; 591 592 ret = bops->alloc_buffer(ring, cb); 593 if (ret) 594 goto out; 595 596 ret = bops->map_buffer(ring, cb); 597 if (ret) 598 goto out_with_buf; 599 600 return 0; 601 602 out_with_buf: 603 bops->free_buffer(ring, cb); 604 out: 605 return ret; 606 } 607 hnae_alloc_buffer_attach(struct hnae_ring * ring,int i)608 static inline int hnae_alloc_buffer_attach(struct hnae_ring *ring, int i) 609 { 610 int ret = hnae_reserve_buffer_map(ring, &ring->desc_cb[i]); 611 612 if (ret) 613 return ret; 614 615 ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma); 616 617 return 0; 618 } 619 hnae_buffer_detach(struct hnae_ring * ring,int i)620 static inline void hnae_buffer_detach(struct hnae_ring *ring, int i) 621 { 622 ring->q->handle->bops->unmap_buffer(ring, &ring->desc_cb[i]); 623 ring->desc[i].addr = 0; 624 } 625 hnae_free_buffer_detach(struct hnae_ring * ring,int i)626 static inline void hnae_free_buffer_detach(struct hnae_ring *ring, int i) 627 { 628 struct hnae_buf_ops *bops = ring->q->handle->bops; 629 struct hnae_desc_cb *cb = &ring->desc_cb[i]; 630 631 if (!ring->desc_cb[i].dma) 632 return; 633 634 hnae_buffer_detach(ring, i); 635 bops->free_buffer(ring, cb); 636 } 637 638 /* detach a in-used buffer and replace with a reserved one */ hnae_replace_buffer(struct hnae_ring * ring,int i,struct hnae_desc_cb * res_cb)639 static inline void hnae_replace_buffer(struct hnae_ring *ring, int i, 640 struct hnae_desc_cb *res_cb) 641 { 642 struct hnae_buf_ops *bops = ring->q->handle->bops; 643 644 bops->unmap_buffer(ring, &ring->desc_cb[i]); 645 ring->desc_cb[i] = *res_cb; 646 ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma); 647 ring->desc[i].rx.ipoff_bnum_pid_flag = 0; 648 } 649 hnae_reuse_buffer(struct hnae_ring * ring,int i)650 static inline void hnae_reuse_buffer(struct hnae_ring *ring, int i) 651 { 652 ring->desc_cb[i].reuse_flag = 0; 653 ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma 654 + ring->desc_cb[i].page_offset); 655 ring->desc[i].rx.ipoff_bnum_pid_flag = 0; 656 } 657 658 /* when reinit buffer size, we should reinit buffer description */ hnae_reinit_all_ring_desc(struct hnae_handle * h)659 static inline void hnae_reinit_all_ring_desc(struct hnae_handle *h) 660 { 661 int i, j; 662 struct hnae_ring *ring; 663 664 for (i = 0; i < h->q_num; i++) { 665 ring = &h->qs[i]->rx_ring; 666 for (j = 0; j < ring->desc_num; j++) 667 ring->desc[j].addr = cpu_to_le64(ring->desc_cb[j].dma); 668 } 669 670 wmb(); /* commit all data before submit */ 671 } 672 673 /* when reinit buffer size, we should reinit page offset */ hnae_reinit_all_ring_page_off(struct hnae_handle * h)674 static inline void hnae_reinit_all_ring_page_off(struct hnae_handle *h) 675 { 676 int i, j; 677 struct hnae_ring *ring; 678 679 for (i = 0; i < h->q_num; i++) { 680 ring = &h->qs[i]->rx_ring; 681 for (j = 0; j < ring->desc_num; j++) { 682 ring->desc_cb[j].page_offset = 0; 683 if (ring->desc[j].addr != 684 cpu_to_le64(ring->desc_cb[j].dma)) 685 ring->desc[j].addr = 686 cpu_to_le64(ring->desc_cb[j].dma); 687 } 688 } 689 690 wmb(); /* commit all data before submit */ 691 } 692 693 #define hnae_set_field(origin, mask, shift, val) \ 694 do { \ 695 (origin) &= (~(mask)); \ 696 (origin) |= ((val) << (shift)) & (mask); \ 697 } while (0) 698 699 #define hnae_set_bit(origin, shift, val) \ 700 hnae_set_field((origin), (0x1 << (shift)), (shift), (val)) 701 702 #define hnae_get_field(origin, mask, shift) (((origin) & (mask)) >> (shift)) 703 704 #define hnae_get_bit(origin, shift) \ 705 hnae_get_field((origin), (0x1 << (shift)), (shift)) 706 707 #endif 708