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