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/mutex.h> 8 #include <linux/workqueue.h> 9 10 #include "ionic_if.h" 11 #include "ionic_regs.h" 12 13 #define IONIC_MIN_MTU ETH_MIN_MTU 14 #define IONIC_MAX_MTU 9194 15 #define IONIC_MAX_TX_DESC 8192 16 #define IONIC_MAX_RX_DESC 16384 17 #define IONIC_MIN_TXRX_DESC 16 18 #define IONIC_DEF_TXRX_DESC 4096 19 #define IONIC_LIFS_MAX 1024 20 #define IONIC_WATCHDOG_SECS 5 21 #define IONIC_ITR_COAL_USEC_DEFAULT 64 22 23 #define IONIC_DEV_CMD_REG_VERSION 1 24 #define IONIC_DEV_INFO_REG_COUNT 32 25 #define IONIC_DEV_CMD_REG_COUNT 32 26 27 struct ionic_dev_bar { 28 void __iomem *vaddr; 29 phys_addr_t bus_addr; 30 unsigned long len; 31 int res_index; 32 }; 33 34 /* Registers */ 35 static_assert(sizeof(struct ionic_intr) == 32); 36 37 static_assert(sizeof(struct ionic_doorbell) == 8); 38 static_assert(sizeof(struct ionic_intr_status) == 8); 39 static_assert(sizeof(union ionic_dev_regs) == 4096); 40 static_assert(sizeof(union ionic_dev_info_regs) == 2048); 41 static_assert(sizeof(union ionic_dev_cmd_regs) == 2048); 42 static_assert(sizeof(struct ionic_lif_stats) == 1024); 43 44 static_assert(sizeof(struct ionic_admin_cmd) == 64); 45 static_assert(sizeof(struct ionic_admin_comp) == 16); 46 static_assert(sizeof(struct ionic_nop_cmd) == 64); 47 static_assert(sizeof(struct ionic_nop_comp) == 16); 48 49 /* Device commands */ 50 static_assert(sizeof(struct ionic_dev_identify_cmd) == 64); 51 static_assert(sizeof(struct ionic_dev_identify_comp) == 16); 52 static_assert(sizeof(struct ionic_dev_init_cmd) == 64); 53 static_assert(sizeof(struct ionic_dev_init_comp) == 16); 54 static_assert(sizeof(struct ionic_dev_reset_cmd) == 64); 55 static_assert(sizeof(struct ionic_dev_reset_comp) == 16); 56 static_assert(sizeof(struct ionic_dev_getattr_cmd) == 64); 57 static_assert(sizeof(struct ionic_dev_getattr_comp) == 16); 58 static_assert(sizeof(struct ionic_dev_setattr_cmd) == 64); 59 static_assert(sizeof(struct ionic_dev_setattr_comp) == 16); 60 61 /* Port commands */ 62 static_assert(sizeof(struct ionic_port_identify_cmd) == 64); 63 static_assert(sizeof(struct ionic_port_identify_comp) == 16); 64 static_assert(sizeof(struct ionic_port_init_cmd) == 64); 65 static_assert(sizeof(struct ionic_port_init_comp) == 16); 66 static_assert(sizeof(struct ionic_port_reset_cmd) == 64); 67 static_assert(sizeof(struct ionic_port_reset_comp) == 16); 68 static_assert(sizeof(struct ionic_port_getattr_cmd) == 64); 69 static_assert(sizeof(struct ionic_port_getattr_comp) == 16); 70 static_assert(sizeof(struct ionic_port_setattr_cmd) == 64); 71 static_assert(sizeof(struct ionic_port_setattr_comp) == 16); 72 73 /* LIF commands */ 74 static_assert(sizeof(struct ionic_lif_init_cmd) == 64); 75 static_assert(sizeof(struct ionic_lif_init_comp) == 16); 76 static_assert(sizeof(struct ionic_lif_reset_cmd) == 64); 77 static_assert(sizeof(ionic_lif_reset_comp) == 16); 78 static_assert(sizeof(struct ionic_lif_getattr_cmd) == 64); 79 static_assert(sizeof(struct ionic_lif_getattr_comp) == 16); 80 static_assert(sizeof(struct ionic_lif_setattr_cmd) == 64); 81 static_assert(sizeof(struct ionic_lif_setattr_comp) == 16); 82 83 static_assert(sizeof(struct ionic_q_init_cmd) == 64); 84 static_assert(sizeof(struct ionic_q_init_comp) == 16); 85 static_assert(sizeof(struct ionic_q_control_cmd) == 64); 86 static_assert(sizeof(ionic_q_control_comp) == 16); 87 static_assert(sizeof(struct ionic_q_identify_cmd) == 64); 88 static_assert(sizeof(struct ionic_q_identify_comp) == 16); 89 90 static_assert(sizeof(struct ionic_rx_mode_set_cmd) == 64); 91 static_assert(sizeof(ionic_rx_mode_set_comp) == 16); 92 static_assert(sizeof(struct ionic_rx_filter_add_cmd) == 64); 93 static_assert(sizeof(struct ionic_rx_filter_add_comp) == 16); 94 static_assert(sizeof(struct ionic_rx_filter_del_cmd) == 64); 95 static_assert(sizeof(ionic_rx_filter_del_comp) == 16); 96 97 /* RDMA commands */ 98 static_assert(sizeof(struct ionic_rdma_reset_cmd) == 64); 99 static_assert(sizeof(struct ionic_rdma_queue_cmd) == 64); 100 101 /* Events */ 102 static_assert(sizeof(struct ionic_notifyq_cmd) == 4); 103 static_assert(sizeof(union ionic_notifyq_comp) == 64); 104 static_assert(sizeof(struct ionic_notifyq_event) == 64); 105 static_assert(sizeof(struct ionic_link_change_event) == 64); 106 static_assert(sizeof(struct ionic_reset_event) == 64); 107 static_assert(sizeof(struct ionic_heartbeat_event) == 64); 108 static_assert(sizeof(struct ionic_log_event) == 64); 109 110 /* I/O */ 111 static_assert(sizeof(struct ionic_txq_desc) == 16); 112 static_assert(sizeof(struct ionic_txq_sg_desc) == 128); 113 static_assert(sizeof(struct ionic_txq_comp) == 16); 114 115 static_assert(sizeof(struct ionic_rxq_desc) == 16); 116 static_assert(sizeof(struct ionic_rxq_sg_desc) == 128); 117 static_assert(sizeof(struct ionic_rxq_comp) == 16); 118 119 /* SR/IOV */ 120 static_assert(sizeof(struct ionic_vf_setattr_cmd) == 64); 121 static_assert(sizeof(struct ionic_vf_setattr_comp) == 16); 122 static_assert(sizeof(struct ionic_vf_getattr_cmd) == 64); 123 static_assert(sizeof(struct ionic_vf_getattr_comp) == 16); 124 125 struct ionic_devinfo { 126 u8 asic_type; 127 u8 asic_rev; 128 char fw_version[IONIC_DEVINFO_FWVERS_BUFLEN + 1]; 129 char serial_num[IONIC_DEVINFO_SERIAL_BUFLEN + 1]; 130 }; 131 132 struct ionic_dev { 133 union ionic_dev_info_regs __iomem *dev_info_regs; 134 union ionic_dev_cmd_regs __iomem *dev_cmd_regs; 135 136 unsigned long last_hb_time; 137 u32 last_hb; 138 u8 last_fw_status; 139 140 u64 __iomem *db_pages; 141 dma_addr_t phy_db_pages; 142 143 struct ionic_intr __iomem *intr_ctrl; 144 u64 __iomem *intr_status; 145 146 u32 port_info_sz; 147 struct ionic_port_info *port_info; 148 dma_addr_t port_info_pa; 149 150 struct ionic_devinfo dev_info; 151 }; 152 153 struct ionic_cq_info { 154 void *cq_desc; 155 struct ionic_cq_info *next; 156 unsigned int index; 157 bool last; 158 }; 159 160 struct ionic_queue; 161 struct ionic_qcq; 162 struct ionic_desc_info; 163 164 typedef void (*ionic_desc_cb)(struct ionic_queue *q, 165 struct ionic_desc_info *desc_info, 166 struct ionic_cq_info *cq_info, void *cb_arg); 167 168 struct ionic_page_info { 169 struct page *page; 170 dma_addr_t dma_addr; 171 }; 172 173 struct ionic_desc_info { 174 void *desc; 175 void *sg_desc; 176 struct ionic_desc_info *next; 177 unsigned int index; 178 unsigned int left; 179 unsigned int npages; 180 struct ionic_page_info pages[IONIC_RX_MAX_SG_ELEMS + 1]; 181 ionic_desc_cb cb; 182 void *cb_arg; 183 }; 184 185 #define IONIC_QUEUE_NAME_MAX_SZ 32 186 187 struct ionic_queue { 188 u64 dbell_count; 189 u64 drop; 190 u64 stop; 191 u64 wake; 192 struct ionic_lif *lif; 193 struct ionic_desc_info *info; 194 struct ionic_desc_info *tail; 195 struct ionic_desc_info *head; 196 struct ionic_dev *idev; 197 unsigned int index; 198 unsigned int type; 199 unsigned int hw_index; 200 unsigned int hw_type; 201 u64 dbval; 202 void *base; 203 void *sg_base; 204 dma_addr_t base_pa; 205 dma_addr_t sg_base_pa; 206 unsigned int num_descs; 207 unsigned int desc_size; 208 unsigned int sg_desc_size; 209 unsigned int pid; 210 char name[IONIC_QUEUE_NAME_MAX_SZ]; 211 }; 212 213 #define IONIC_INTR_INDEX_NOT_ASSIGNED -1 214 #define IONIC_INTR_NAME_MAX_SZ 32 215 216 struct ionic_intr_info { 217 char name[IONIC_INTR_NAME_MAX_SZ]; 218 unsigned int index; 219 unsigned int vector; 220 u64 rearm_count; 221 unsigned int cpu; 222 cpumask_t affinity_mask; 223 }; 224 225 struct ionic_cq { 226 void *base; 227 dma_addr_t base_pa; 228 struct ionic_lif *lif; 229 struct ionic_cq_info *info; 230 struct ionic_cq_info *tail; 231 struct ionic_queue *bound_q; 232 struct ionic_intr_info *bound_intr; 233 bool done_color; 234 unsigned int num_descs; 235 u64 compl_count; 236 unsigned int desc_size; 237 }; 238 239 struct ionic; 240 241 static inline void ionic_intr_init(struct ionic_dev *idev, 242 struct ionic_intr_info *intr, 243 unsigned long index) 244 { 245 ionic_intr_clean(idev->intr_ctrl, index); 246 intr->index = index; 247 } 248 249 static inline unsigned int ionic_q_space_avail(struct ionic_queue *q) 250 { 251 unsigned int avail = q->tail->index; 252 253 if (q->head->index >= avail) 254 avail += q->head->left - 1; 255 else 256 avail -= q->head->index + 1; 257 258 return avail; 259 } 260 261 static inline bool ionic_q_has_space(struct ionic_queue *q, unsigned int want) 262 { 263 return ionic_q_space_avail(q) >= want; 264 } 265 266 void ionic_init_devinfo(struct ionic *ionic); 267 int ionic_dev_setup(struct ionic *ionic); 268 void ionic_dev_teardown(struct ionic *ionic); 269 270 void ionic_dev_cmd_go(struct ionic_dev *idev, union ionic_dev_cmd *cmd); 271 u8 ionic_dev_cmd_status(struct ionic_dev *idev); 272 bool ionic_dev_cmd_done(struct ionic_dev *idev); 273 void ionic_dev_cmd_comp(struct ionic_dev *idev, union ionic_dev_cmd_comp *comp); 274 275 void ionic_dev_cmd_identify(struct ionic_dev *idev, u8 ver); 276 void ionic_dev_cmd_init(struct ionic_dev *idev); 277 void ionic_dev_cmd_reset(struct ionic_dev *idev); 278 279 void ionic_dev_cmd_port_identify(struct ionic_dev *idev); 280 void ionic_dev_cmd_port_init(struct ionic_dev *idev); 281 void ionic_dev_cmd_port_reset(struct ionic_dev *idev); 282 void ionic_dev_cmd_port_state(struct ionic_dev *idev, u8 state); 283 void ionic_dev_cmd_port_speed(struct ionic_dev *idev, u32 speed); 284 void ionic_dev_cmd_port_autoneg(struct ionic_dev *idev, u8 an_enable); 285 void ionic_dev_cmd_port_fec(struct ionic_dev *idev, u8 fec_type); 286 void ionic_dev_cmd_port_pause(struct ionic_dev *idev, u8 pause_type); 287 288 int ionic_set_vf_config(struct ionic *ionic, int vf, u8 attr, u8 *data); 289 void ionic_dev_cmd_queue_identify(struct ionic_dev *idev, 290 u16 lif_type, u8 qtype, u8 qver); 291 void ionic_dev_cmd_lif_identify(struct ionic_dev *idev, u8 type, u8 ver); 292 void ionic_dev_cmd_lif_init(struct ionic_dev *idev, u16 lif_index, 293 dma_addr_t addr); 294 void ionic_dev_cmd_lif_reset(struct ionic_dev *idev, u16 lif_index); 295 void ionic_dev_cmd_adminq_init(struct ionic_dev *idev, struct ionic_qcq *qcq, 296 u16 lif_index, u16 intr_index); 297 298 int ionic_db_page_num(struct ionic_lif *lif, int pid); 299 300 int ionic_cq_init(struct ionic_lif *lif, struct ionic_cq *cq, 301 struct ionic_intr_info *intr, 302 unsigned int num_descs, size_t desc_size); 303 void ionic_cq_map(struct ionic_cq *cq, void *base, dma_addr_t base_pa); 304 void ionic_cq_bind(struct ionic_cq *cq, struct ionic_queue *q); 305 typedef bool (*ionic_cq_cb)(struct ionic_cq *cq, struct ionic_cq_info *cq_info); 306 typedef void (*ionic_cq_done_cb)(void *done_arg); 307 unsigned int ionic_cq_service(struct ionic_cq *cq, unsigned int work_to_do, 308 ionic_cq_cb cb, ionic_cq_done_cb done_cb, 309 void *done_arg); 310 311 int ionic_q_init(struct ionic_lif *lif, struct ionic_dev *idev, 312 struct ionic_queue *q, unsigned int index, const char *name, 313 unsigned int num_descs, size_t desc_size, 314 size_t sg_desc_size, unsigned int pid); 315 void ionic_q_map(struct ionic_queue *q, void *base, dma_addr_t base_pa); 316 void ionic_q_sg_map(struct ionic_queue *q, void *base, dma_addr_t base_pa); 317 void ionic_q_post(struct ionic_queue *q, bool ring_doorbell, ionic_desc_cb cb, 318 void *cb_arg); 319 void ionic_q_rewind(struct ionic_queue *q, struct ionic_desc_info *start); 320 void ionic_q_service(struct ionic_queue *q, struct ionic_cq_info *cq_info, 321 unsigned int stop_index); 322 int ionic_heartbeat_check(struct ionic *ionic); 323 324 #endif /* _IONIC_DEV_H_ */ 325