1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* Copyright(c) 2017 - 2019 Pensando Systems, Inc */ 3 4 #ifndef _IONIC_DEV_H_ 5 #define _IONIC_DEV_H_ 6 7 #include <linux/atomic.h> 8 #include <linux/mutex.h> 9 #include <linux/workqueue.h> 10 #include <linux/skbuff.h> 11 #include <linux/bpf_trace.h> 12 13 #include "ionic_if.h" 14 #include "ionic_regs.h" 15 16 #define IONIC_MAX_TX_DESC 8192 17 #define IONIC_MAX_RX_DESC 16384 18 #define IONIC_MIN_TXRX_DESC 64 19 #define IONIC_DEF_TXRX_DESC 1024 20 #define IONIC_RX_FILL_THRESHOLD 16 21 #define IONIC_RX_FILL_DIV 8 22 #define IONIC_TSO_DESCS_NEEDED 44 /* 64K TSO @1500B */ 23 #define IONIC_LIFS_MAX 1024 24 #define IONIC_WATCHDOG_SECS 5 25 #define IONIC_ITR_COAL_USEC_DEFAULT 64 26 27 #define IONIC_DEV_CMD_REG_VERSION 1 28 #define IONIC_DEV_INFO_REG_COUNT 32 29 #define IONIC_DEV_CMD_REG_COUNT 32 30 31 #define IONIC_NAPI_DEADLINE (HZ) /* 1 sec */ 32 #define IONIC_ADMIN_DOORBELL_DEADLINE (HZ / 2) /* 500ms */ 33 #define IONIC_TX_DOORBELL_DEADLINE (HZ / 100) /* 10ms */ 34 #define IONIC_RX_MIN_DOORBELL_DEADLINE (HZ / 100) /* 10ms */ 35 #define IONIC_RX_MAX_DOORBELL_DEADLINE (HZ * 5) /* 5s */ 36 37 struct ionic_dev_bar { 38 void __iomem *vaddr; 39 phys_addr_t bus_addr; 40 unsigned long len; 41 int res_index; 42 }; 43 44 #ifndef __CHECKER__ 45 /* Registers */ 46 static_assert(sizeof(struct ionic_intr) == 32); 47 48 static_assert(sizeof(struct ionic_doorbell) == 8); 49 static_assert(sizeof(struct ionic_intr_status) == 8); 50 static_assert(sizeof(union ionic_dev_regs) == 4096); 51 static_assert(sizeof(union ionic_dev_info_regs) == 2048); 52 static_assert(sizeof(union ionic_dev_cmd_regs) == 2048); 53 static_assert(sizeof(struct ionic_lif_stats) == 1024); 54 55 static_assert(sizeof(struct ionic_admin_cmd) == 64); 56 static_assert(sizeof(struct ionic_admin_comp) == 16); 57 static_assert(sizeof(struct ionic_nop_cmd) == 64); 58 static_assert(sizeof(struct ionic_nop_comp) == 16); 59 60 /* Device commands */ 61 static_assert(sizeof(struct ionic_dev_identify_cmd) == 64); 62 static_assert(sizeof(struct ionic_dev_identify_comp) == 16); 63 static_assert(sizeof(struct ionic_dev_init_cmd) == 64); 64 static_assert(sizeof(struct ionic_dev_init_comp) == 16); 65 static_assert(sizeof(struct ionic_dev_reset_cmd) == 64); 66 static_assert(sizeof(struct ionic_dev_reset_comp) == 16); 67 static_assert(sizeof(struct ionic_dev_getattr_cmd) == 64); 68 static_assert(sizeof(struct ionic_dev_getattr_comp) == 16); 69 static_assert(sizeof(struct ionic_dev_setattr_cmd) == 64); 70 static_assert(sizeof(struct ionic_dev_setattr_comp) == 16); 71 static_assert(sizeof(struct ionic_lif_setphc_cmd) == 64); 72 73 /* Port commands */ 74 static_assert(sizeof(struct ionic_port_identify_cmd) == 64); 75 static_assert(sizeof(struct ionic_port_identify_comp) == 16); 76 static_assert(sizeof(struct ionic_port_init_cmd) == 64); 77 static_assert(sizeof(struct ionic_port_init_comp) == 16); 78 static_assert(sizeof(struct ionic_port_reset_cmd) == 64); 79 static_assert(sizeof(struct ionic_port_reset_comp) == 16); 80 static_assert(sizeof(struct ionic_port_getattr_cmd) == 64); 81 static_assert(sizeof(struct ionic_port_getattr_comp) == 16); 82 static_assert(sizeof(struct ionic_port_setattr_cmd) == 64); 83 static_assert(sizeof(struct ionic_port_setattr_comp) == 16); 84 85 /* LIF commands */ 86 static_assert(sizeof(struct ionic_lif_init_cmd) == 64); 87 static_assert(sizeof(struct ionic_lif_init_comp) == 16); 88 static_assert(sizeof(struct ionic_lif_reset_cmd) == 64); 89 static_assert(sizeof(ionic_lif_reset_comp) == 16); 90 static_assert(sizeof(struct ionic_lif_getattr_cmd) == 64); 91 static_assert(sizeof(struct ionic_lif_getattr_comp) == 16); 92 static_assert(sizeof(struct ionic_lif_setattr_cmd) == 64); 93 static_assert(sizeof(struct ionic_lif_setattr_comp) == 16); 94 95 static_assert(sizeof(struct ionic_q_init_cmd) == 64); 96 static_assert(sizeof(struct ionic_q_init_comp) == 16); 97 static_assert(sizeof(struct ionic_q_control_cmd) == 64); 98 static_assert(sizeof(ionic_q_control_comp) == 16); 99 static_assert(sizeof(struct ionic_q_identify_cmd) == 64); 100 static_assert(sizeof(struct ionic_q_identify_comp) == 16); 101 102 static_assert(sizeof(struct ionic_rx_mode_set_cmd) == 64); 103 static_assert(sizeof(ionic_rx_mode_set_comp) == 16); 104 static_assert(sizeof(struct ionic_rx_filter_add_cmd) == 64); 105 static_assert(sizeof(struct ionic_rx_filter_add_comp) == 16); 106 static_assert(sizeof(struct ionic_rx_filter_del_cmd) == 64); 107 static_assert(sizeof(ionic_rx_filter_del_comp) == 16); 108 109 /* RDMA commands */ 110 static_assert(sizeof(struct ionic_rdma_reset_cmd) == 64); 111 static_assert(sizeof(struct ionic_rdma_queue_cmd) == 64); 112 113 /* Events */ 114 static_assert(sizeof(struct ionic_notifyq_cmd) == 4); 115 static_assert(sizeof(union ionic_notifyq_comp) == 64); 116 static_assert(sizeof(struct ionic_notifyq_event) == 64); 117 static_assert(sizeof(struct ionic_link_change_event) == 64); 118 static_assert(sizeof(struct ionic_reset_event) == 64); 119 static_assert(sizeof(struct ionic_heartbeat_event) == 64); 120 static_assert(sizeof(struct ionic_log_event) == 64); 121 122 /* I/O */ 123 static_assert(sizeof(struct ionic_txq_desc) == 16); 124 static_assert(sizeof(struct ionic_txq_sg_desc) == 128); 125 static_assert(sizeof(struct ionic_txq_sg_desc_v1) == 256); 126 static_assert(sizeof(struct ionic_txq_comp) == 16); 127 128 static_assert(sizeof(struct ionic_rxq_desc) == 16); 129 static_assert(sizeof(struct ionic_rxq_sg_desc) == 128); 130 static_assert(sizeof(struct ionic_rxq_comp) == 16); 131 static_assert(sizeof(struct ionic_rxq_comp) == sizeof(struct ionic_txq_comp)); 132 133 /* SR/IOV */ 134 static_assert(sizeof(struct ionic_vf_setattr_cmd) == 64); 135 static_assert(sizeof(struct ionic_vf_setattr_comp) == 16); 136 static_assert(sizeof(struct ionic_vf_getattr_cmd) == 64); 137 static_assert(sizeof(struct ionic_vf_getattr_comp) == 16); 138 static_assert(sizeof(struct ionic_vf_ctrl_cmd) == 64); 139 static_assert(sizeof(struct ionic_vf_ctrl_comp) == 16); 140 #endif /* __CHECKER__ */ 141 142 struct ionic_devinfo { 143 u8 asic_type; 144 u8 asic_rev; 145 char fw_version[IONIC_DEVINFO_FWVERS_BUFLEN + 1]; 146 char serial_num[IONIC_DEVINFO_SERIAL_BUFLEN + 1]; 147 }; 148 149 struct ionic_dev { 150 union ionic_dev_info_regs __iomem *dev_info_regs; 151 union ionic_dev_cmd_regs __iomem *dev_cmd_regs; 152 struct ionic_hwstamp_regs __iomem *hwstamp_regs; 153 154 atomic_long_t last_check_time; 155 unsigned long last_hb_time; 156 u32 last_fw_hb; 157 bool fw_hb_ready; 158 bool fw_status_ready; 159 u8 fw_generation; 160 u8 opcode; 161 162 u64 __iomem *db_pages; 163 dma_addr_t phy_db_pages; 164 165 struct ionic_intr __iomem *intr_ctrl; 166 u64 __iomem *intr_status; 167 168 struct mutex cmb_inuse_lock; /* for cmb_inuse */ 169 unsigned long *cmb_inuse; 170 dma_addr_t phy_cmb_pages; 171 u32 cmb_npages; 172 173 u32 port_info_sz; 174 struct ionic_port_info *port_info; 175 dma_addr_t port_info_pa; 176 177 struct ionic_devinfo dev_info; 178 }; 179 180 struct ionic_queue; 181 struct ionic_qcq; 182 183 #define IONIC_MAX_BUF_LEN ((u16)-1) 184 #define IONIC_PAGE_SIZE PAGE_SIZE 185 #define IONIC_PAGE_SPLIT_SZ (PAGE_SIZE / 2) 186 #define IONIC_PAGE_GFP_MASK (GFP_ATOMIC | __GFP_NOWARN |\ 187 __GFP_COMP | __GFP_MEMALLOC) 188 189 #define IONIC_XDP_MAX_LINEAR_MTU (IONIC_PAGE_SIZE - \ 190 (VLAN_ETH_HLEN + \ 191 XDP_PACKET_HEADROOM + \ 192 SKB_DATA_ALIGN(sizeof(struct skb_shared_info)))) 193 194 struct ionic_buf_info { 195 struct page *page; 196 dma_addr_t dma_addr; 197 u32 page_offset; 198 u32 len; 199 }; 200 201 #define IONIC_TX_MAX_FRAGS (1 + IONIC_TX_MAX_SG_ELEMS_V1) 202 #define IONIC_RX_MAX_FRAGS (1 + IONIC_RX_MAX_SG_ELEMS) 203 204 struct ionic_tx_desc_info { 205 unsigned int bytes; 206 unsigned int nbufs; 207 struct sk_buff *skb; 208 struct xdp_frame *xdpf; 209 enum xdp_action act; 210 struct ionic_buf_info bufs[MAX_SKB_FRAGS + 1]; 211 }; 212 213 struct ionic_rx_desc_info { 214 unsigned int nbufs; 215 struct ionic_buf_info bufs[IONIC_RX_MAX_FRAGS]; 216 }; 217 218 struct ionic_admin_desc_info { 219 void *ctx; 220 }; 221 222 #define IONIC_QUEUE_NAME_MAX_SZ 16 223 224 struct ionic_queue { 225 struct device *dev; 226 struct ionic_lif *lif; 227 union { 228 void *info; 229 struct ionic_tx_desc_info *tx_info; 230 struct ionic_rx_desc_info *rx_info; 231 struct ionic_admin_desc_info *admin_info; 232 }; 233 u64 dbval; 234 unsigned long dbell_deadline; 235 unsigned long dbell_jiffies; 236 u16 head_idx; 237 u16 tail_idx; 238 unsigned int index; 239 unsigned int num_descs; 240 unsigned int max_sg_elems; 241 u64 features; 242 unsigned int type; 243 unsigned int hw_index; 244 unsigned int hw_type; 245 bool xdp_flush; 246 union { 247 void *base; 248 struct ionic_txq_desc *txq; 249 struct ionic_rxq_desc *rxq; 250 struct ionic_admin_cmd *adminq; 251 }; 252 union { 253 void __iomem *cmb_base; 254 struct ionic_txq_desc __iomem *cmb_txq; 255 struct ionic_rxq_desc __iomem *cmb_rxq; 256 }; 257 union { 258 void *sg_base; 259 struct ionic_txq_sg_desc *txq_sgl; 260 struct ionic_txq_sg_desc_v1 *txq_sgl_v1; 261 struct ionic_rxq_sg_desc *rxq_sgl; 262 }; 263 struct xdp_rxq_info *xdp_rxq_info; 264 struct ionic_queue *partner; 265 dma_addr_t base_pa; 266 dma_addr_t cmb_base_pa; 267 dma_addr_t sg_base_pa; 268 u64 drop; 269 unsigned int desc_size; 270 unsigned int sg_desc_size; 271 unsigned int pid; 272 char name[IONIC_QUEUE_NAME_MAX_SZ]; 273 } ____cacheline_aligned_in_smp; 274 275 #define IONIC_INTR_INDEX_NOT_ASSIGNED -1 276 #define IONIC_INTR_NAME_MAX_SZ 32 277 278 struct ionic_intr_info { 279 char name[IONIC_INTR_NAME_MAX_SZ]; 280 u64 rearm_count; 281 unsigned int index; 282 unsigned int vector; 283 u32 dim_coal_hw; 284 cpumask_var_t *affinity_mask; 285 struct irq_affinity_notify aff_notify; 286 }; 287 288 struct ionic_cq { 289 struct ionic_lif *lif; 290 struct ionic_queue *bound_q; 291 struct ionic_intr_info *bound_intr; 292 u16 tail_idx; 293 bool done_color; 294 unsigned int num_descs; 295 unsigned int desc_size; 296 void *base; 297 dma_addr_t base_pa; 298 struct ionic_dev *idev; 299 } ____cacheline_aligned_in_smp; 300 301 struct ionic; 302 303 static inline void ionic_intr_init(struct ionic_dev *idev, 304 struct ionic_intr_info *intr, 305 unsigned long index) 306 { 307 ionic_intr_clean(idev->intr_ctrl, index); 308 intr->index = index; 309 } 310 311 static inline unsigned int ionic_q_space_avail(struct ionic_queue *q) 312 { 313 unsigned int avail = q->tail_idx; 314 315 if (q->head_idx >= avail) 316 avail += q->num_descs - q->head_idx - 1; 317 else 318 avail -= q->head_idx + 1; 319 320 return avail; 321 } 322 323 static inline bool ionic_q_has_space(struct ionic_queue *q, unsigned int want) 324 { 325 return ionic_q_space_avail(q) >= want; 326 } 327 328 void ionic_init_devinfo(struct ionic *ionic); 329 int ionic_dev_setup(struct ionic *ionic); 330 void ionic_dev_teardown(struct ionic *ionic); 331 332 void ionic_dev_cmd_go(struct ionic_dev *idev, union ionic_dev_cmd *cmd); 333 u8 ionic_dev_cmd_status(struct ionic_dev *idev); 334 bool ionic_dev_cmd_done(struct ionic_dev *idev); 335 void ionic_dev_cmd_comp(struct ionic_dev *idev, union ionic_dev_cmd_comp *comp); 336 337 void ionic_dev_cmd_identify(struct ionic_dev *idev, u8 ver); 338 void ionic_dev_cmd_init(struct ionic_dev *idev); 339 void ionic_dev_cmd_reset(struct ionic_dev *idev); 340 341 void ionic_dev_cmd_port_identify(struct ionic_dev *idev); 342 void ionic_dev_cmd_port_init(struct ionic_dev *idev); 343 void ionic_dev_cmd_port_reset(struct ionic_dev *idev); 344 void ionic_dev_cmd_port_state(struct ionic_dev *idev, u8 state); 345 void ionic_dev_cmd_port_speed(struct ionic_dev *idev, u32 speed); 346 void ionic_dev_cmd_port_autoneg(struct ionic_dev *idev, u8 an_enable); 347 void ionic_dev_cmd_port_fec(struct ionic_dev *idev, u8 fec_type); 348 void ionic_dev_cmd_port_pause(struct ionic_dev *idev, u8 pause_type); 349 350 int ionic_set_vf_config(struct ionic *ionic, int vf, 351 struct ionic_vf_setattr_cmd *vfc); 352 353 void ionic_dev_cmd_queue_identify(struct ionic_dev *idev, 354 u16 lif_type, u8 qtype, u8 qver); 355 void ionic_vf_start(struct ionic *ionic); 356 void ionic_dev_cmd_lif_identify(struct ionic_dev *idev, u8 type, u8 ver); 357 void ionic_dev_cmd_lif_init(struct ionic_dev *idev, u16 lif_index, 358 dma_addr_t addr); 359 void ionic_dev_cmd_lif_reset(struct ionic_dev *idev, u16 lif_index); 360 void ionic_dev_cmd_adminq_init(struct ionic_dev *idev, struct ionic_qcq *qcq, 361 u16 lif_index, u16 intr_index); 362 363 int ionic_db_page_num(struct ionic_lif *lif, int pid); 364 365 int ionic_get_cmb(struct ionic_lif *lif, u32 *pgid, phys_addr_t *pgaddr, int order); 366 void ionic_put_cmb(struct ionic_lif *lif, u32 pgid, int order); 367 368 int ionic_cq_init(struct ionic_lif *lif, struct ionic_cq *cq, 369 struct ionic_intr_info *intr, 370 unsigned int num_descs, size_t desc_size); 371 void ionic_cq_map(struct ionic_cq *cq, void *base, dma_addr_t base_pa); 372 void ionic_cq_bind(struct ionic_cq *cq, struct ionic_queue *q); 373 typedef bool (*ionic_cq_cb)(struct ionic_cq *cq); 374 typedef void (*ionic_cq_done_cb)(void *done_arg); 375 unsigned int ionic_cq_service(struct ionic_cq *cq, unsigned int work_to_do, 376 ionic_cq_cb cb, ionic_cq_done_cb done_cb, 377 void *done_arg); 378 unsigned int ionic_tx_cq_service(struct ionic_cq *cq, 379 unsigned int work_to_do, 380 bool in_napi); 381 382 int ionic_q_init(struct ionic_lif *lif, struct ionic_dev *idev, 383 struct ionic_queue *q, unsigned int index, const char *name, 384 unsigned int num_descs, size_t desc_size, 385 size_t sg_desc_size, unsigned int pid); 386 void ionic_q_post(struct ionic_queue *q, bool ring_doorbell); 387 bool ionic_q_is_posted(struct ionic_queue *q, unsigned int pos); 388 389 int ionic_heartbeat_check(struct ionic *ionic); 390 bool ionic_is_fw_running(struct ionic_dev *idev); 391 void ionic_doorbell_napi_work(struct work_struct *work); 392 void ionic_queue_doorbell_check(struct ionic *ionic, int delay); 393 394 bool ionic_adminq_poke_doorbell(struct ionic_queue *q); 395 bool ionic_txq_poke_doorbell(struct ionic_queue *q); 396 bool ionic_rxq_poke_doorbell(struct ionic_queue *q); 397 398 #endif /* _IONIC_DEV_H_ */ 399