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