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 #endif /* __CHECKER__ */ 128 129 struct ionic_devinfo { 130 u8 asic_type; 131 u8 asic_rev; 132 char fw_version[IONIC_DEVINFO_FWVERS_BUFLEN + 1]; 133 char serial_num[IONIC_DEVINFO_SERIAL_BUFLEN + 1]; 134 }; 135 136 struct ionic_dev { 137 union ionic_dev_info_regs __iomem *dev_info_regs; 138 union ionic_dev_cmd_regs __iomem *dev_cmd_regs; 139 struct ionic_hwstamp_regs __iomem *hwstamp_regs; 140 141 atomic_long_t last_check_time; 142 unsigned long last_hb_time; 143 u32 last_fw_hb; 144 bool fw_hb_ready; 145 bool fw_status_ready; 146 u8 fw_generation; 147 148 u64 __iomem *db_pages; 149 dma_addr_t phy_db_pages; 150 151 struct ionic_intr __iomem *intr_ctrl; 152 u64 __iomem *intr_status; 153 154 u32 port_info_sz; 155 struct ionic_port_info *port_info; 156 dma_addr_t port_info_pa; 157 158 struct ionic_devinfo dev_info; 159 }; 160 161 struct ionic_cq_info { 162 union { 163 void *cq_desc; 164 struct ionic_admin_comp *admincq; 165 struct ionic_notifyq_event *notifyq; 166 }; 167 }; 168 169 struct ionic_queue; 170 struct ionic_qcq; 171 struct ionic_desc_info; 172 173 typedef void (*ionic_desc_cb)(struct ionic_queue *q, 174 struct ionic_desc_info *desc_info, 175 struct ionic_cq_info *cq_info, void *cb_arg); 176 177 #define IONIC_PAGE_SIZE PAGE_SIZE 178 #define IONIC_PAGE_SPLIT_SZ (PAGE_SIZE / 2) 179 #define IONIC_PAGE_GFP_MASK (GFP_ATOMIC | __GFP_NOWARN |\ 180 __GFP_COMP | __GFP_MEMALLOC) 181 182 struct ionic_buf_info { 183 struct page *page; 184 dma_addr_t dma_addr; 185 u32 page_offset; 186 u32 len; 187 }; 188 189 #define IONIC_MAX_FRAGS (1 + IONIC_TX_MAX_SG_ELEMS_V1) 190 191 struct ionic_desc_info { 192 union { 193 void *desc; 194 struct ionic_txq_desc *txq_desc; 195 struct ionic_rxq_desc *rxq_desc; 196 struct ionic_admin_cmd *adminq_desc; 197 }; 198 union { 199 void *sg_desc; 200 struct ionic_txq_sg_desc *txq_sg_desc; 201 struct ionic_rxq_sg_desc *rxq_sgl_desc; 202 }; 203 unsigned int bytes; 204 unsigned int nbufs; 205 struct ionic_buf_info bufs[IONIC_MAX_FRAGS]; 206 ionic_desc_cb cb; 207 void *cb_arg; 208 }; 209 210 #define IONIC_QUEUE_NAME_MAX_SZ 32 211 212 struct ionic_queue { 213 struct device *dev; 214 struct ionic_lif *lif; 215 struct ionic_desc_info *info; 216 u64 dbval; 217 u16 head_idx; 218 u16 tail_idx; 219 unsigned int index; 220 unsigned int num_descs; 221 unsigned int max_sg_elems; 222 u64 features; 223 u64 dbell_count; 224 u64 stop; 225 u64 wake; 226 u64 drop; 227 struct ionic_dev *idev; 228 unsigned int type; 229 unsigned int hw_index; 230 unsigned int hw_type; 231 union { 232 void *base; 233 struct ionic_txq_desc *txq; 234 struct ionic_rxq_desc *rxq; 235 struct ionic_admin_cmd *adminq; 236 }; 237 union { 238 void *sg_base; 239 struct ionic_txq_sg_desc *txq_sgl; 240 struct ionic_rxq_sg_desc *rxq_sgl; 241 }; 242 dma_addr_t base_pa; 243 dma_addr_t sg_base_pa; 244 unsigned int desc_size; 245 unsigned int sg_desc_size; 246 unsigned int pid; 247 char name[IONIC_QUEUE_NAME_MAX_SZ]; 248 } ____cacheline_aligned_in_smp; 249 250 #define IONIC_INTR_INDEX_NOT_ASSIGNED -1 251 #define IONIC_INTR_NAME_MAX_SZ 32 252 253 struct ionic_intr_info { 254 char name[IONIC_INTR_NAME_MAX_SZ]; 255 unsigned int index; 256 unsigned int vector; 257 u64 rearm_count; 258 unsigned int cpu; 259 cpumask_t affinity_mask; 260 u32 dim_coal_hw; 261 }; 262 263 struct ionic_cq { 264 struct ionic_lif *lif; 265 struct ionic_cq_info *info; 266 struct ionic_queue *bound_q; 267 struct ionic_intr_info *bound_intr; 268 u16 tail_idx; 269 bool done_color; 270 unsigned int num_descs; 271 unsigned int desc_size; 272 u64 compl_count; 273 void *base; 274 dma_addr_t base_pa; 275 } ____cacheline_aligned_in_smp; 276 277 struct ionic; 278 279 static inline void ionic_intr_init(struct ionic_dev *idev, 280 struct ionic_intr_info *intr, 281 unsigned long index) 282 { 283 ionic_intr_clean(idev->intr_ctrl, index); 284 intr->index = index; 285 } 286 287 static inline unsigned int ionic_q_space_avail(struct ionic_queue *q) 288 { 289 unsigned int avail = q->tail_idx; 290 291 if (q->head_idx >= avail) 292 avail += q->num_descs - q->head_idx - 1; 293 else 294 avail -= q->head_idx + 1; 295 296 return avail; 297 } 298 299 static inline bool ionic_q_has_space(struct ionic_queue *q, unsigned int want) 300 { 301 return ionic_q_space_avail(q) >= want; 302 } 303 304 void ionic_init_devinfo(struct ionic *ionic); 305 int ionic_dev_setup(struct ionic *ionic); 306 307 void ionic_dev_cmd_go(struct ionic_dev *idev, union ionic_dev_cmd *cmd); 308 u8 ionic_dev_cmd_status(struct ionic_dev *idev); 309 bool ionic_dev_cmd_done(struct ionic_dev *idev); 310 void ionic_dev_cmd_comp(struct ionic_dev *idev, union ionic_dev_cmd_comp *comp); 311 312 void ionic_dev_cmd_identify(struct ionic_dev *idev, u8 ver); 313 void ionic_dev_cmd_init(struct ionic_dev *idev); 314 void ionic_dev_cmd_reset(struct ionic_dev *idev); 315 316 void ionic_dev_cmd_port_identify(struct ionic_dev *idev); 317 void ionic_dev_cmd_port_init(struct ionic_dev *idev); 318 void ionic_dev_cmd_port_reset(struct ionic_dev *idev); 319 void ionic_dev_cmd_port_state(struct ionic_dev *idev, u8 state); 320 void ionic_dev_cmd_port_speed(struct ionic_dev *idev, u32 speed); 321 void ionic_dev_cmd_port_autoneg(struct ionic_dev *idev, u8 an_enable); 322 void ionic_dev_cmd_port_fec(struct ionic_dev *idev, u8 fec_type); 323 void ionic_dev_cmd_port_pause(struct ionic_dev *idev, u8 pause_type); 324 325 int ionic_set_vf_config(struct ionic *ionic, int vf, u8 attr, u8 *data); 326 void ionic_dev_cmd_queue_identify(struct ionic_dev *idev, 327 u16 lif_type, u8 qtype, u8 qver); 328 void ionic_dev_cmd_lif_identify(struct ionic_dev *idev, u8 type, u8 ver); 329 void ionic_dev_cmd_lif_init(struct ionic_dev *idev, u16 lif_index, 330 dma_addr_t addr); 331 void ionic_dev_cmd_lif_reset(struct ionic_dev *idev, u16 lif_index); 332 void ionic_dev_cmd_adminq_init(struct ionic_dev *idev, struct ionic_qcq *qcq, 333 u16 lif_index, u16 intr_index); 334 335 int ionic_db_page_num(struct ionic_lif *lif, int pid); 336 337 int ionic_cq_init(struct ionic_lif *lif, struct ionic_cq *cq, 338 struct ionic_intr_info *intr, 339 unsigned int num_descs, size_t desc_size); 340 void ionic_cq_map(struct ionic_cq *cq, void *base, dma_addr_t base_pa); 341 void ionic_cq_bind(struct ionic_cq *cq, struct ionic_queue *q); 342 typedef bool (*ionic_cq_cb)(struct ionic_cq *cq, struct ionic_cq_info *cq_info); 343 typedef void (*ionic_cq_done_cb)(void *done_arg); 344 unsigned int ionic_cq_service(struct ionic_cq *cq, unsigned int work_to_do, 345 ionic_cq_cb cb, ionic_cq_done_cb done_cb, 346 void *done_arg); 347 348 int ionic_q_init(struct ionic_lif *lif, struct ionic_dev *idev, 349 struct ionic_queue *q, unsigned int index, const char *name, 350 unsigned int num_descs, size_t desc_size, 351 size_t sg_desc_size, unsigned int pid); 352 void ionic_q_map(struct ionic_queue *q, void *base, dma_addr_t base_pa); 353 void ionic_q_sg_map(struct ionic_queue *q, void *base, dma_addr_t base_pa); 354 void ionic_q_post(struct ionic_queue *q, bool ring_doorbell, ionic_desc_cb cb, 355 void *cb_arg); 356 void ionic_q_rewind(struct ionic_queue *q, struct ionic_desc_info *start); 357 void ionic_q_service(struct ionic_queue *q, struct ionic_cq_info *cq_info, 358 unsigned int stop_index); 359 int ionic_heartbeat_check(struct ionic *ionic); 360 361 #endif /* _IONIC_DEV_H_ */ 362