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