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_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 86 static_assert(sizeof(struct ionic_rx_mode_set_cmd) == 64); 87 static_assert(sizeof(ionic_rx_mode_set_comp) == 16); 88 static_assert(sizeof(struct ionic_rx_filter_add_cmd) == 64); 89 static_assert(sizeof(struct ionic_rx_filter_add_comp) == 16); 90 static_assert(sizeof(struct ionic_rx_filter_del_cmd) == 64); 91 static_assert(sizeof(ionic_rx_filter_del_comp) == 16); 92 93 /* RDMA commands */ 94 static_assert(sizeof(struct ionic_rdma_reset_cmd) == 64); 95 static_assert(sizeof(struct ionic_rdma_queue_cmd) == 64); 96 97 /* Events */ 98 static_assert(sizeof(struct ionic_notifyq_cmd) == 4); 99 static_assert(sizeof(union ionic_notifyq_comp) == 64); 100 static_assert(sizeof(struct ionic_notifyq_event) == 64); 101 static_assert(sizeof(struct ionic_link_change_event) == 64); 102 static_assert(sizeof(struct ionic_reset_event) == 64); 103 static_assert(sizeof(struct ionic_heartbeat_event) == 64); 104 static_assert(sizeof(struct ionic_log_event) == 64); 105 106 /* I/O */ 107 static_assert(sizeof(struct ionic_txq_desc) == 16); 108 static_assert(sizeof(struct ionic_txq_sg_desc) == 128); 109 static_assert(sizeof(struct ionic_txq_comp) == 16); 110 111 static_assert(sizeof(struct ionic_rxq_desc) == 16); 112 static_assert(sizeof(struct ionic_rxq_sg_desc) == 128); 113 static_assert(sizeof(struct ionic_rxq_comp) == 16); 114 115 struct ionic_devinfo { 116 u8 asic_type; 117 u8 asic_rev; 118 char fw_version[IONIC_DEVINFO_FWVERS_BUFLEN + 1]; 119 char serial_num[IONIC_DEVINFO_SERIAL_BUFLEN + 1]; 120 }; 121 122 struct ionic_dev { 123 union ionic_dev_info_regs __iomem *dev_info_regs; 124 union ionic_dev_cmd_regs __iomem *dev_cmd_regs; 125 126 u64 __iomem *db_pages; 127 dma_addr_t phy_db_pages; 128 129 struct ionic_intr __iomem *intr_ctrl; 130 u64 __iomem *intr_status; 131 132 u32 port_info_sz; 133 struct ionic_port_info *port_info; 134 dma_addr_t port_info_pa; 135 136 struct ionic_devinfo dev_info; 137 }; 138 139 struct ionic_cq_info { 140 void *cq_desc; 141 struct ionic_cq_info *next; 142 unsigned int index; 143 bool last; 144 }; 145 146 struct ionic_queue; 147 struct ionic_qcq; 148 struct ionic_desc_info; 149 150 typedef void (*ionic_desc_cb)(struct ionic_queue *q, 151 struct ionic_desc_info *desc_info, 152 struct ionic_cq_info *cq_info, void *cb_arg); 153 154 struct ionic_desc_info { 155 void *desc; 156 void *sg_desc; 157 struct ionic_desc_info *next; 158 unsigned int index; 159 unsigned int left; 160 ionic_desc_cb cb; 161 void *cb_arg; 162 }; 163 164 #define QUEUE_NAME_MAX_SZ 32 165 166 struct ionic_queue { 167 u64 dbell_count; 168 u64 drop; 169 u64 stop; 170 u64 wake; 171 struct ionic_lif *lif; 172 struct ionic_desc_info *info; 173 struct ionic_desc_info *tail; 174 struct ionic_desc_info *head; 175 struct ionic_dev *idev; 176 unsigned int index; 177 unsigned int type; 178 unsigned int hw_index; 179 unsigned int hw_type; 180 u64 dbval; 181 void *base; 182 void *sg_base; 183 dma_addr_t base_pa; 184 dma_addr_t sg_base_pa; 185 unsigned int num_descs; 186 unsigned int desc_size; 187 unsigned int sg_desc_size; 188 unsigned int pid; 189 char name[QUEUE_NAME_MAX_SZ]; 190 }; 191 192 #define INTR_INDEX_NOT_ASSIGNED -1 193 #define INTR_NAME_MAX_SZ 32 194 195 struct ionic_intr_info { 196 char name[INTR_NAME_MAX_SZ]; 197 unsigned int index; 198 unsigned int vector; 199 u64 rearm_count; 200 unsigned int cpu; 201 cpumask_t affinity_mask; 202 }; 203 204 struct ionic_cq { 205 void *base; 206 dma_addr_t base_pa; 207 struct ionic_lif *lif; 208 struct ionic_cq_info *info; 209 struct ionic_cq_info *tail; 210 struct ionic_queue *bound_q; 211 struct ionic_intr_info *bound_intr; 212 bool done_color; 213 unsigned int num_descs; 214 u64 compl_count; 215 unsigned int desc_size; 216 }; 217 218 struct ionic; 219 220 static inline void ionic_intr_init(struct ionic_dev *idev, 221 struct ionic_intr_info *intr, 222 unsigned long index) 223 { 224 ionic_intr_clean(idev->intr_ctrl, index); 225 intr->index = index; 226 } 227 228 static inline unsigned int ionic_q_space_avail(struct ionic_queue *q) 229 { 230 unsigned int avail = q->tail->index; 231 232 if (q->head->index >= avail) 233 avail += q->head->left - 1; 234 else 235 avail -= q->head->index + 1; 236 237 return avail; 238 } 239 240 static inline bool ionic_q_has_space(struct ionic_queue *q, unsigned int want) 241 { 242 return ionic_q_space_avail(q) >= want; 243 } 244 245 void ionic_init_devinfo(struct ionic *ionic); 246 int ionic_dev_setup(struct ionic *ionic); 247 void ionic_dev_teardown(struct ionic *ionic); 248 249 void ionic_dev_cmd_go(struct ionic_dev *idev, union ionic_dev_cmd *cmd); 250 u8 ionic_dev_cmd_status(struct ionic_dev *idev); 251 bool ionic_dev_cmd_done(struct ionic_dev *idev); 252 void ionic_dev_cmd_comp(struct ionic_dev *idev, union ionic_dev_cmd_comp *comp); 253 254 void ionic_dev_cmd_identify(struct ionic_dev *idev, u8 ver); 255 void ionic_dev_cmd_init(struct ionic_dev *idev); 256 void ionic_dev_cmd_reset(struct ionic_dev *idev); 257 258 void ionic_dev_cmd_port_identify(struct ionic_dev *idev); 259 void ionic_dev_cmd_port_init(struct ionic_dev *idev); 260 void ionic_dev_cmd_port_reset(struct ionic_dev *idev); 261 void ionic_dev_cmd_port_state(struct ionic_dev *idev, u8 state); 262 void ionic_dev_cmd_port_speed(struct ionic_dev *idev, u32 speed); 263 void ionic_dev_cmd_port_autoneg(struct ionic_dev *idev, u8 an_enable); 264 void ionic_dev_cmd_port_fec(struct ionic_dev *idev, u8 fec_type); 265 void ionic_dev_cmd_port_pause(struct ionic_dev *idev, u8 pause_type); 266 267 void ionic_dev_cmd_lif_identify(struct ionic_dev *idev, u8 type, u8 ver); 268 void ionic_dev_cmd_lif_init(struct ionic_dev *idev, u16 lif_index, 269 dma_addr_t addr); 270 void ionic_dev_cmd_lif_reset(struct ionic_dev *idev, u16 lif_index); 271 void ionic_dev_cmd_adminq_init(struct ionic_dev *idev, struct ionic_qcq *qcq, 272 u16 lif_index, u16 intr_index); 273 274 int ionic_db_page_num(struct ionic_lif *lif, int pid); 275 276 int ionic_cq_init(struct ionic_lif *lif, struct ionic_cq *cq, 277 struct ionic_intr_info *intr, 278 unsigned int num_descs, size_t desc_size); 279 void ionic_cq_map(struct ionic_cq *cq, void *base, dma_addr_t base_pa); 280 void ionic_cq_bind(struct ionic_cq *cq, struct ionic_queue *q); 281 typedef bool (*ionic_cq_cb)(struct ionic_cq *cq, struct ionic_cq_info *cq_info); 282 typedef void (*ionic_cq_done_cb)(void *done_arg); 283 unsigned int ionic_cq_service(struct ionic_cq *cq, unsigned int work_to_do, 284 ionic_cq_cb cb, ionic_cq_done_cb done_cb, 285 void *done_arg); 286 287 int ionic_q_init(struct ionic_lif *lif, struct ionic_dev *idev, 288 struct ionic_queue *q, unsigned int index, const char *name, 289 unsigned int num_descs, size_t desc_size, 290 size_t sg_desc_size, unsigned int pid); 291 void ionic_q_map(struct ionic_queue *q, void *base, dma_addr_t base_pa); 292 void ionic_q_sg_map(struct ionic_queue *q, void *base, dma_addr_t base_pa); 293 void ionic_q_post(struct ionic_queue *q, bool ring_doorbell, ionic_desc_cb cb, 294 void *cb_arg); 295 void ionic_q_rewind(struct ionic_queue *q, struct ionic_desc_info *start); 296 void ionic_q_service(struct ionic_queue *q, struct ionic_cq_info *cq_info, 297 unsigned int stop_index); 298 299 #endif /* _IONIC_DEV_H_ */ 300