drivers/net/ethernet/pensando/ionic/ionic_dev.h

   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 #ifndef __CHECKER__
  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 static_assert(sizeof(struct ionic_q_identify_cmd) == 64);
  87 static_assert(sizeof(struct ionic_q_identify_comp) == 16);
  88
  89 static_assert(sizeof(struct ionic_rx_mode_set_cmd) == 64);
  90 static_assert(sizeof(ionic_rx_mode_set_comp) == 16);
  91 static_assert(sizeof(struct ionic_rx_filter_add_cmd) == 64);
  92 static_assert(sizeof(struct ionic_rx_filter_add_comp) == 16);
  93 static_assert(sizeof(struct ionic_rx_filter_del_cmd) == 64);
  94 static_assert(sizeof(ionic_rx_filter_del_comp) == 16);
  95
  96 /* RDMA commands */
  97 static_assert(sizeof(struct ionic_rdma_reset_cmd) == 64);
  98 static_assert(sizeof(struct ionic_rdma_queue_cmd) == 64);
  99
 100 /* Events */
 101 static_assert(sizeof(struct ionic_notifyq_cmd) == 4);
 102 static_assert(sizeof(union ionic_notifyq_comp) == 64);
 103 static_assert(sizeof(struct ionic_notifyq_event) == 64);
 104 static_assert(sizeof(struct ionic_link_change_event) == 64);
 105 static_assert(sizeof(struct ionic_reset_event) == 64);
 106 static_assert(sizeof(struct ionic_heartbeat_event) == 64);
 107 static_assert(sizeof(struct ionic_log_event) == 64);
 108
 109 /* I/O */
 110 static_assert(sizeof(struct ionic_txq_desc) == 16);
 111 static_assert(sizeof(struct ionic_txq_sg_desc) == 128);
 112 static_assert(sizeof(struct ionic_txq_comp) == 16);
 113
 114 static_assert(sizeof(struct ionic_rxq_desc) == 16);
 115 static_assert(sizeof(struct ionic_rxq_sg_desc) == 128);
 116 static_assert(sizeof(struct ionic_rxq_comp) == 16);
 117
 118 /* SR/IOV */
 119 static_assert(sizeof(struct ionic_vf_setattr_cmd) == 64);
 120 static_assert(sizeof(struct ionic_vf_setattr_comp) == 16);
 121 static_assert(sizeof(struct ionic_vf_getattr_cmd) == 64);
 122 static_assert(sizeof(struct ionic_vf_getattr_comp) == 16);
 123 #endif /* __CHECKER__ */
 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         union {
 155                 void *cq_desc;
 156                 struct ionic_txq_comp *txcq;
 157                 struct ionic_rxq_comp *rxcq;
 158                 struct ionic_admin_comp *admincq;
 159                 struct ionic_notifyq_event *notifyq;
 160         };
 161 };
 162
 163 struct ionic_queue;
 164 struct ionic_qcq;
 165 struct ionic_desc_info;
 166
 167 typedef void (*ionic_desc_cb)(struct ionic_queue *q,
 168                               struct ionic_desc_info *desc_info,
 169                               struct ionic_cq_info *cq_info, void *cb_arg);
 170
 171 struct ionic_page_info {
 172         struct page *page;
 173         dma_addr_t dma_addr;
 174 };
 175
 176 struct ionic_desc_info {
 177         union {
 178                 void *desc;
 179                 struct ionic_txq_desc *txq_desc;
 180                 struct ionic_rxq_desc *rxq_desc;
 181                 struct ionic_admin_cmd *adminq_desc;
 182         };
 183         union {
 184                 void *sg_desc;
 185                 struct ionic_txq_sg_desc *txq_sg_desc;
 186                 struct ionic_rxq_sg_desc *rxq_sgl_desc;
 187         };
 188         unsigned int npages;
 189         struct ionic_page_info pages[IONIC_RX_MAX_SG_ELEMS + 1];
 190         ionic_desc_cb cb;
 191         void *cb_arg;
 192 };
 193
 194 #define IONIC_QUEUE_NAME_MAX_SZ         32
 195
 196 struct ionic_queue {
 197         struct device *dev;
 198         struct ionic_lif *lif;
 199         struct ionic_desc_info *info;
 200         u16 head_idx;
 201         u16 tail_idx;
 202         unsigned int index;
 203         unsigned int num_descs;
 204         u64 dbell_count;
 205         u64 stop;
 206         u64 wake;
 207         u64 drop;
 208         struct ionic_dev *idev;
 209         unsigned int type;
 210         unsigned int hw_index;
 211         unsigned int hw_type;
 212         u64 dbval;
 213         union {
 214                 void *base;
 215                 struct ionic_txq_desc *txq;
 216                 struct ionic_rxq_desc *rxq;
 217                 struct ionic_admin_cmd *adminq;
 218         };
 219         union {
 220                 void *sg_base;
 221                 struct ionic_txq_sg_desc *txq_sgl;
 222                 struct ionic_rxq_sg_desc *rxq_sgl;
 223         };
 224         dma_addr_t base_pa;
 225         dma_addr_t sg_base_pa;
 226         unsigned int desc_size;
 227         unsigned int sg_desc_size;
 228         unsigned int pid;
 229         char name[IONIC_QUEUE_NAME_MAX_SZ];
 230 };
 231
 232 #define IONIC_INTR_INDEX_NOT_ASSIGNED   -1
 233 #define IONIC_INTR_NAME_MAX_SZ          32
 234
 235 struct ionic_intr_info {
 236         char name[IONIC_INTR_NAME_MAX_SZ];
 237         unsigned int index;
 238         unsigned int vector;
 239         u64 rearm_count;
 240         unsigned int cpu;
 241         cpumask_t affinity_mask;
 242         u32 dim_coal_hw;
 243 };
 244
 245 struct ionic_cq {
 246         struct ionic_lif *lif;
 247         struct ionic_cq_info *info;
 248         struct ionic_queue *bound_q;
 249         struct ionic_intr_info *bound_intr;
 250         u16 tail_idx;
 251         bool done_color;
 252         unsigned int num_descs;
 253         unsigned int desc_size;
 254         u64 compl_count;
 255         void *base;
 256         dma_addr_t base_pa;
 257 };
 258
 259 struct ionic;
 260
 261 static inline void ionic_intr_init(struct ionic_dev *idev,
 262                                    struct ionic_intr_info *intr,
 263                                    unsigned long index)
 264 {
 265         ionic_intr_clean(idev->intr_ctrl, index);
 266         intr->index = index;
 267 }
 268
 269 static inline unsigned int ionic_q_space_avail(struct ionic_queue *q)
 270 {
 271         unsigned int avail = q->tail_idx;
 272
 273         if (q->head_idx >= avail)
 274                 avail += q->num_descs - q->head_idx - 1;
 275         else
 276                 avail -= q->head_idx + 1;
 277
 278         return avail;
 279 }
 280
 281 static inline bool ionic_q_has_space(struct ionic_queue *q, unsigned int want)
 282 {
 283         return ionic_q_space_avail(q) >= want;
 284 }
 285
 286 void ionic_init_devinfo(struct ionic *ionic);
 287 int ionic_dev_setup(struct ionic *ionic);
 288
 289 void ionic_dev_cmd_go(struct ionic_dev *idev, union ionic_dev_cmd *cmd);
 290 u8 ionic_dev_cmd_status(struct ionic_dev *idev);
 291 bool ionic_dev_cmd_done(struct ionic_dev *idev);
 292 void ionic_dev_cmd_comp(struct ionic_dev *idev, union ionic_dev_cmd_comp *comp);
 293
 294 void ionic_dev_cmd_identify(struct ionic_dev *idev, u8 ver);
 295 void ionic_dev_cmd_init(struct ionic_dev *idev);
 296 void ionic_dev_cmd_reset(struct ionic_dev *idev);
 297
 298 void ionic_dev_cmd_port_identify(struct ionic_dev *idev);
 299 void ionic_dev_cmd_port_init(struct ionic_dev *idev);
 300 void ionic_dev_cmd_port_reset(struct ionic_dev *idev);
 301 void ionic_dev_cmd_port_state(struct ionic_dev *idev, u8 state);
 302 void ionic_dev_cmd_port_speed(struct ionic_dev *idev, u32 speed);
 303 void ionic_dev_cmd_port_autoneg(struct ionic_dev *idev, u8 an_enable);
 304 void ionic_dev_cmd_port_fec(struct ionic_dev *idev, u8 fec_type);
 305 void ionic_dev_cmd_port_pause(struct ionic_dev *idev, u8 pause_type);
 306
 307 int ionic_set_vf_config(struct ionic *ionic, int vf, u8 attr, u8 *data);
 308 void ionic_dev_cmd_queue_identify(struct ionic_dev *idev,
 309                                   u16 lif_type, u8 qtype, u8 qver);
 310 void ionic_dev_cmd_lif_identify(struct ionic_dev *idev, u8 type, u8 ver);
 311 void ionic_dev_cmd_lif_init(struct ionic_dev *idev, u16 lif_index,
 312                             dma_addr_t addr);
 313 void ionic_dev_cmd_lif_reset(struct ionic_dev *idev, u16 lif_index);
 314 void ionic_dev_cmd_adminq_init(struct ionic_dev *idev, struct ionic_qcq *qcq,
 315                                u16 lif_index, u16 intr_index);
 316
 317 int ionic_db_page_num(struct ionic_lif *lif, int pid);
 318
 319 int ionic_cq_init(struct ionic_lif *lif, struct ionic_cq *cq,
 320                   struct ionic_intr_info *intr,
 321                   unsigned int num_descs, size_t desc_size);
 322 void ionic_cq_map(struct ionic_cq *cq, void *base, dma_addr_t base_pa);
 323 void ionic_cq_bind(struct ionic_cq *cq, struct ionic_queue *q);
 324 typedef bool (*ionic_cq_cb)(struct ionic_cq *cq, struct ionic_cq_info *cq_info);
 325 typedef void (*ionic_cq_done_cb)(void *done_arg);
 326 unsigned int ionic_cq_service(struct ionic_cq *cq, unsigned int work_to_do,
 327                               ionic_cq_cb cb, ionic_cq_done_cb done_cb,
 328                               void *done_arg);
 329
 330 int ionic_q_init(struct ionic_lif *lif, struct ionic_dev *idev,
 331                  struct ionic_queue *q, unsigned int index, const char *name,
 332                  unsigned int num_descs, size_t desc_size,
 333                  size_t sg_desc_size, unsigned int pid);
 334 void ionic_q_map(struct ionic_queue *q, void *base, dma_addr_t base_pa);
 335 void ionic_q_sg_map(struct ionic_queue *q, void *base, dma_addr_t base_pa);
 336 void ionic_q_post(struct ionic_queue *q, bool ring_doorbell, ionic_desc_cb cb,
 337                   void *cb_arg);
 338 void ionic_q_rewind(struct ionic_queue *q, struct ionic_desc_info *start);
 339 void ionic_q_service(struct ionic_queue *q, struct ionic_cq_info *cq_info,
 340                      unsigned int stop_index);
 341 int ionic_heartbeat_check(struct ionic *ionic);
 342
 343 #endif /* _IONIC_DEV_H_ */