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 u8 last_fw_status; 136 137 u64 __iomem *db_pages; 138 dma_addr_t phy_db_pages; 139 140 struct ionic_intr __iomem *intr_ctrl; 141 u64 __iomem *intr_status; 142 143 u32 port_info_sz; 144 struct ionic_port_info *port_info; 145 dma_addr_t port_info_pa; 146 147 struct ionic_devinfo dev_info; 148 }; 149 150 struct ionic_cq_info { 151 void *cq_desc; 152 struct ionic_cq_info *next; 153 unsigned int index; 154 bool last; 155 }; 156 157 struct ionic_queue; 158 struct ionic_qcq; 159 struct ionic_desc_info; 160 161 typedef void (*ionic_desc_cb)(struct ionic_queue *q, 162 struct ionic_desc_info *desc_info, 163 struct ionic_cq_info *cq_info, void *cb_arg); 164 165 struct ionic_page_info { 166 struct page *page; 167 dma_addr_t dma_addr; 168 }; 169 170 struct ionic_desc_info { 171 void *desc; 172 void *sg_desc; 173 struct ionic_desc_info *next; 174 unsigned int index; 175 unsigned int left; 176 unsigned int npages; 177 struct ionic_page_info pages[IONIC_RX_MAX_SG_ELEMS + 1]; 178 ionic_desc_cb cb; 179 void *cb_arg; 180 }; 181 182 #define QUEUE_NAME_MAX_SZ 32 183 184 struct ionic_queue { 185 u64 dbell_count; 186 u64 drop; 187 u64 stop; 188 u64 wake; 189 struct ionic_lif *lif; 190 struct ionic_desc_info *info; 191 struct ionic_desc_info *tail; 192 struct ionic_desc_info *head; 193 struct ionic_dev *idev; 194 unsigned int index; 195 unsigned int type; 196 unsigned int hw_index; 197 unsigned int hw_type; 198 u64 dbval; 199 void *base; 200 void *sg_base; 201 dma_addr_t base_pa; 202 dma_addr_t sg_base_pa; 203 unsigned int num_descs; 204 unsigned int desc_size; 205 unsigned int sg_desc_size; 206 unsigned int pid; 207 char name[QUEUE_NAME_MAX_SZ]; 208 }; 209 210 #define INTR_INDEX_NOT_ASSIGNED -1 211 #define INTR_NAME_MAX_SZ 32 212 213 struct ionic_intr_info { 214 char name[INTR_NAME_MAX_SZ]; 215 unsigned int index; 216 unsigned int vector; 217 u64 rearm_count; 218 unsigned int cpu; 219 cpumask_t affinity_mask; 220 }; 221 222 struct ionic_cq { 223 void *base; 224 dma_addr_t base_pa; 225 struct ionic_lif *lif; 226 struct ionic_cq_info *info; 227 struct ionic_cq_info *tail; 228 struct ionic_queue *bound_q; 229 struct ionic_intr_info *bound_intr; 230 bool done_color; 231 unsigned int num_descs; 232 u64 compl_count; 233 unsigned int desc_size; 234 }; 235 236 struct ionic; 237 238 static inline void ionic_intr_init(struct ionic_dev *idev, 239 struct ionic_intr_info *intr, 240 unsigned long index) 241 { 242 ionic_intr_clean(idev->intr_ctrl, index); 243 intr->index = index; 244 } 245 246 static inline unsigned int ionic_q_space_avail(struct ionic_queue *q) 247 { 248 unsigned int avail = q->tail->index; 249 250 if (q->head->index >= avail) 251 avail += q->head->left - 1; 252 else 253 avail -= q->head->index + 1; 254 255 return avail; 256 } 257 258 static inline bool ionic_q_has_space(struct ionic_queue *q, unsigned int want) 259 { 260 return ionic_q_space_avail(q) >= want; 261 } 262 263 void ionic_init_devinfo(struct ionic *ionic); 264 int ionic_dev_setup(struct ionic *ionic); 265 void ionic_dev_teardown(struct ionic *ionic); 266 267 void ionic_dev_cmd_go(struct ionic_dev *idev, union ionic_dev_cmd *cmd); 268 u8 ionic_dev_cmd_status(struct ionic_dev *idev); 269 bool ionic_dev_cmd_done(struct ionic_dev *idev); 270 void ionic_dev_cmd_comp(struct ionic_dev *idev, union ionic_dev_cmd_comp *comp); 271 272 void ionic_dev_cmd_identify(struct ionic_dev *idev, u8 ver); 273 void ionic_dev_cmd_init(struct ionic_dev *idev); 274 void ionic_dev_cmd_reset(struct ionic_dev *idev); 275 276 void ionic_dev_cmd_port_identify(struct ionic_dev *idev); 277 void ionic_dev_cmd_port_init(struct ionic_dev *idev); 278 void ionic_dev_cmd_port_reset(struct ionic_dev *idev); 279 void ionic_dev_cmd_port_state(struct ionic_dev *idev, u8 state); 280 void ionic_dev_cmd_port_speed(struct ionic_dev *idev, u32 speed); 281 void ionic_dev_cmd_port_autoneg(struct ionic_dev *idev, u8 an_enable); 282 void ionic_dev_cmd_port_fec(struct ionic_dev *idev, u8 fec_type); 283 void ionic_dev_cmd_port_pause(struct ionic_dev *idev, u8 pause_type); 284 285 int ionic_set_vf_config(struct ionic *ionic, int vf, u8 attr, u8 *data); 286 void ionic_dev_cmd_lif_identify(struct ionic_dev *idev, u8 type, u8 ver); 287 void ionic_dev_cmd_lif_init(struct ionic_dev *idev, u16 lif_index, 288 dma_addr_t addr); 289 void ionic_dev_cmd_lif_reset(struct ionic_dev *idev, u16 lif_index); 290 void ionic_dev_cmd_adminq_init(struct ionic_dev *idev, struct ionic_qcq *qcq, 291 u16 lif_index, u16 intr_index); 292 293 int ionic_db_page_num(struct ionic_lif *lif, int pid); 294 295 int ionic_cq_init(struct ionic_lif *lif, struct ionic_cq *cq, 296 struct ionic_intr_info *intr, 297 unsigned int num_descs, size_t desc_size); 298 void ionic_cq_map(struct ionic_cq *cq, void *base, dma_addr_t base_pa); 299 void ionic_cq_bind(struct ionic_cq *cq, struct ionic_queue *q); 300 typedef bool (*ionic_cq_cb)(struct ionic_cq *cq, struct ionic_cq_info *cq_info); 301 typedef void (*ionic_cq_done_cb)(void *done_arg); 302 unsigned int ionic_cq_service(struct ionic_cq *cq, unsigned int work_to_do, 303 ionic_cq_cb cb, ionic_cq_done_cb done_cb, 304 void *done_arg); 305 306 int ionic_q_init(struct ionic_lif *lif, struct ionic_dev *idev, 307 struct ionic_queue *q, unsigned int index, const char *name, 308 unsigned int num_descs, size_t desc_size, 309 size_t sg_desc_size, unsigned int pid); 310 void ionic_q_map(struct ionic_queue *q, void *base, dma_addr_t base_pa); 311 void ionic_q_sg_map(struct ionic_queue *q, void *base, dma_addr_t base_pa); 312 void ionic_q_post(struct ionic_queue *q, bool ring_doorbell, ionic_desc_cb cb, 313 void *cb_arg); 314 void ionic_q_rewind(struct ionic_queue *q, struct ionic_desc_info *start); 315 void ionic_q_service(struct ionic_queue *q, struct ionic_cq_info *cq_info, 316 unsigned int stop_index); 317 int ionic_heartbeat_check(struct ionic *ionic); 318 319 #endif /* _IONIC_DEV_H_ */ 320