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