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/atomic.h>
   8 #include <linux/mutex.h>
   9 #include <linux/workqueue.h>
  10
  11 #include "ionic_if.h"
  12 #include "ionic_regs.h"
  13
  14 #define IONIC_MAX_TX_DESC               8192
  15 #define IONIC_MAX_RX_DESC               16384
  16 #define IONIC_MIN_TXRX_DESC             64
  17 #define IONIC_DEF_TXRX_DESC             4096
  18 #define IONIC_RX_FILL_THRESHOLD         16
  19 #define IONIC_RX_FILL_DIV               8
  20 #define IONIC_LIFS_MAX                  1024
  21 #define IONIC_WATCHDOG_SECS             5
  22 #define IONIC_ITR_COAL_USEC_DEFAULT     64
  23
  24 #define IONIC_DEV_CMD_REG_VERSION       1
  25 #define IONIC_DEV_INFO_REG_COUNT        32
  26 #define IONIC_DEV_CMD_REG_COUNT         32
  27
  28 struct ionic_dev_bar {
  29         void __iomem *vaddr;
  30         phys_addr_t bus_addr;
  31         unsigned long len;
  32         int res_index;
  33 };
  34
  35 #ifndef __CHECKER__
  36 /* Registers */
  37 static_assert(sizeof(struct ionic_intr) == 32);
  38
  39 static_assert(sizeof(struct ionic_doorbell) == 8);
  40 static_assert(sizeof(struct ionic_intr_status) == 8);
  41 static_assert(sizeof(union ionic_dev_regs) == 4096);
  42 static_assert(sizeof(union ionic_dev_info_regs) == 2048);
  43 static_assert(sizeof(union ionic_dev_cmd_regs) == 2048);
  44 static_assert(sizeof(struct ionic_lif_stats) == 1024);
  45
  46 static_assert(sizeof(struct ionic_admin_cmd) == 64);
  47 static_assert(sizeof(struct ionic_admin_comp) == 16);
  48 static_assert(sizeof(struct ionic_nop_cmd) == 64);
  49 static_assert(sizeof(struct ionic_nop_comp) == 16);
  50
  51 /* Device commands */
  52 static_assert(sizeof(struct ionic_dev_identify_cmd) == 64);
  53 static_assert(sizeof(struct ionic_dev_identify_comp) == 16);
  54 static_assert(sizeof(struct ionic_dev_init_cmd) == 64);
  55 static_assert(sizeof(struct ionic_dev_init_comp) == 16);
  56 static_assert(sizeof(struct ionic_dev_reset_cmd) == 64);
  57 static_assert(sizeof(struct ionic_dev_reset_comp) == 16);
  58 static_assert(sizeof(struct ionic_dev_getattr_cmd) == 64);
  59 static_assert(sizeof(struct ionic_dev_getattr_comp) == 16);
  60 static_assert(sizeof(struct ionic_dev_setattr_cmd) == 64);
  61 static_assert(sizeof(struct ionic_dev_setattr_comp) == 16);
  62 static_assert(sizeof(struct ionic_lif_setphc_cmd) == 64);
  63
  64 /* Port commands */
  65 static_assert(sizeof(struct ionic_port_identify_cmd) == 64);
  66 static_assert(sizeof(struct ionic_port_identify_comp) == 16);
  67 static_assert(sizeof(struct ionic_port_init_cmd) == 64);
  68 static_assert(sizeof(struct ionic_port_init_comp) == 16);
  69 static_assert(sizeof(struct ionic_port_reset_cmd) == 64);
  70 static_assert(sizeof(struct ionic_port_reset_comp) == 16);
  71 static_assert(sizeof(struct ionic_port_getattr_cmd) == 64);
  72 static_assert(sizeof(struct ionic_port_getattr_comp) == 16);
  73 static_assert(sizeof(struct ionic_port_setattr_cmd) == 64);
  74 static_assert(sizeof(struct ionic_port_setattr_comp) == 16);
  75
  76 /* LIF commands */
  77 static_assert(sizeof(struct ionic_lif_init_cmd) == 64);
  78 static_assert(sizeof(struct ionic_lif_init_comp) == 16);
  79 static_assert(sizeof(struct ionic_lif_reset_cmd) == 64);
  80 static_assert(sizeof(ionic_lif_reset_comp) == 16);
  81 static_assert(sizeof(struct ionic_lif_getattr_cmd) == 64);
  82 static_assert(sizeof(struct ionic_lif_getattr_comp) == 16);
  83 static_assert(sizeof(struct ionic_lif_setattr_cmd) == 64);
  84 static_assert(sizeof(struct ionic_lif_setattr_comp) == 16);
  85
  86 static_assert(sizeof(struct ionic_q_init_cmd) == 64);
  87 static_assert(sizeof(struct ionic_q_init_comp) == 16);
  88 static_assert(sizeof(struct ionic_q_control_cmd) == 64);
  89 static_assert(sizeof(ionic_q_control_comp) == 16);
  90 static_assert(sizeof(struct ionic_q_identify_cmd) == 64);
  91 static_assert(sizeof(struct ionic_q_identify_comp) == 16);
  92
  93 static_assert(sizeof(struct ionic_rx_mode_set_cmd) == 64);
  94 static_assert(sizeof(ionic_rx_mode_set_comp) == 16);
  95 static_assert(sizeof(struct ionic_rx_filter_add_cmd) == 64);
  96 static_assert(sizeof(struct ionic_rx_filter_add_comp) == 16);
  97 static_assert(sizeof(struct ionic_rx_filter_del_cmd) == 64);
  98 static_assert(sizeof(ionic_rx_filter_del_comp) == 16);
  99
 100 /* RDMA commands */
 101 static_assert(sizeof(struct ionic_rdma_reset_cmd) == 64);
 102 static_assert(sizeof(struct ionic_rdma_queue_cmd) == 64);
 103
 104 /* Events */
 105 static_assert(sizeof(struct ionic_notifyq_cmd) == 4);
 106 static_assert(sizeof(union ionic_notifyq_comp) == 64);
 107 static_assert(sizeof(struct ionic_notifyq_event) == 64);
 108 static_assert(sizeof(struct ionic_link_change_event) == 64);
 109 static_assert(sizeof(struct ionic_reset_event) == 64);
 110 static_assert(sizeof(struct ionic_heartbeat_event) == 64);
 111 static_assert(sizeof(struct ionic_log_event) == 64);
 112
 113 /* I/O */
 114 static_assert(sizeof(struct ionic_txq_desc) == 16);
 115 static_assert(sizeof(struct ionic_txq_sg_desc) == 128);
 116 static_assert(sizeof(struct ionic_txq_comp) == 16);
 117
 118 static_assert(sizeof(struct ionic_rxq_desc) == 16);
 119 static_assert(sizeof(struct ionic_rxq_sg_desc) == 128);
 120 static_assert(sizeof(struct ionic_rxq_comp) == 16);
 121
 122 /* SR/IOV */
 123 static_assert(sizeof(struct ionic_vf_setattr_cmd) == 64);
 124 static_assert(sizeof(struct ionic_vf_setattr_comp) == 16);
 125 static_assert(sizeof(struct ionic_vf_getattr_cmd) == 64);
 126 static_assert(sizeof(struct ionic_vf_getattr_comp) == 16);
 127 #endif /* __CHECKER__ */
 128
 129 struct ionic_devinfo {
 130         u8 asic_type;
 131         u8 asic_rev;
 132         char fw_version[IONIC_DEVINFO_FWVERS_BUFLEN + 1];
 133         char serial_num[IONIC_DEVINFO_SERIAL_BUFLEN + 1];
 134 };
 135
 136 struct ionic_dev {
 137         union ionic_dev_info_regs __iomem *dev_info_regs;
 138         union ionic_dev_cmd_regs __iomem *dev_cmd_regs;
 139         struct ionic_hwstamp_regs __iomem *hwstamp_regs;
 140
 141         atomic_long_t last_check_time;
 142         unsigned long last_hb_time;
 143         u32 last_fw_hb;
 144         bool fw_hb_ready;
 145         bool fw_status_ready;
 146         u8 fw_generation;
 147
 148         u64 __iomem *db_pages;
 149         dma_addr_t phy_db_pages;
 150
 151         struct ionic_intr __iomem *intr_ctrl;
 152         u64 __iomem *intr_status;
 153
 154         u32 port_info_sz;
 155         struct ionic_port_info *port_info;
 156         dma_addr_t port_info_pa;
 157
 158         struct ionic_devinfo dev_info;
 159 };
 160
 161 struct ionic_cq_info {
 162         union {
 163                 void *cq_desc;
 164                 struct ionic_admin_comp *admincq;
 165                 struct ionic_notifyq_event *notifyq;
 166         };
 167 };
 168
 169 struct ionic_queue;
 170 struct ionic_qcq;
 171 struct ionic_desc_info;
 172
 173 typedef void (*ionic_desc_cb)(struct ionic_queue *q,
 174                               struct ionic_desc_info *desc_info,
 175                               struct ionic_cq_info *cq_info, void *cb_arg);
 176
 177 #define IONIC_PAGE_SIZE                         PAGE_SIZE
 178 #define IONIC_PAGE_SPLIT_SZ                     (PAGE_SIZE / 2)
 179 #define IONIC_PAGE_GFP_MASK                     (GFP_ATOMIC | __GFP_NOWARN |\
 180                                                  __GFP_COMP | __GFP_MEMALLOC)
 181
 182 struct ionic_buf_info {
 183         struct page *page;
 184         dma_addr_t dma_addr;
 185         u32 page_offset;
 186         u32 len;
 187 };
 188
 189 #define IONIC_MAX_FRAGS                 (1 + IONIC_TX_MAX_SG_ELEMS_V1)
 190
 191 struct ionic_desc_info {
 192         union {
 193                 void *desc;
 194                 struct ionic_txq_desc *txq_desc;
 195                 struct ionic_rxq_desc *rxq_desc;
 196                 struct ionic_admin_cmd *adminq_desc;
 197         };
 198         union {
 199                 void *sg_desc;
 200                 struct ionic_txq_sg_desc *txq_sg_desc;
 201                 struct ionic_rxq_sg_desc *rxq_sgl_desc;
 202         };
 203         unsigned int bytes;
 204         unsigned int nbufs;
 205         struct ionic_buf_info bufs[IONIC_MAX_FRAGS];
 206         ionic_desc_cb cb;
 207         void *cb_arg;
 208 };
 209
 210 #define IONIC_QUEUE_NAME_MAX_SZ         32
 211
 212 struct ionic_queue {
 213         struct device *dev;
 214         struct ionic_lif *lif;
 215         struct ionic_desc_info *info;
 216         u64 dbval;
 217         u16 head_idx;
 218         u16 tail_idx;
 219         unsigned int index;
 220         unsigned int num_descs;
 221         unsigned int max_sg_elems;
 222         u64 features;
 223         u64 dbell_count;
 224         u64 stop;
 225         u64 wake;
 226         u64 drop;
 227         struct ionic_dev *idev;
 228         unsigned int type;
 229         unsigned int hw_index;
 230         unsigned int hw_type;
 231         union {
 232                 void *base;
 233                 struct ionic_txq_desc *txq;
 234                 struct ionic_rxq_desc *rxq;
 235                 struct ionic_admin_cmd *adminq;
 236         };
 237         union {
 238                 void *sg_base;
 239                 struct ionic_txq_sg_desc *txq_sgl;
 240                 struct ionic_rxq_sg_desc *rxq_sgl;
 241         };
 242         dma_addr_t base_pa;
 243         dma_addr_t sg_base_pa;
 244         unsigned int desc_size;
 245         unsigned int sg_desc_size;
 246         unsigned int pid;
 247         char name[IONIC_QUEUE_NAME_MAX_SZ];
 248 } ____cacheline_aligned_in_smp;
 249
 250 #define IONIC_INTR_INDEX_NOT_ASSIGNED   -1
 251 #define IONIC_INTR_NAME_MAX_SZ          32
 252
 253 struct ionic_intr_info {
 254         char name[IONIC_INTR_NAME_MAX_SZ];
 255         unsigned int index;
 256         unsigned int vector;
 257         u64 rearm_count;
 258         unsigned int cpu;
 259         cpumask_t affinity_mask;
 260         u32 dim_coal_hw;
 261 };
 262
 263 struct ionic_cq {
 264         struct ionic_lif *lif;
 265         struct ionic_cq_info *info;
 266         struct ionic_queue *bound_q;
 267         struct ionic_intr_info *bound_intr;
 268         u16 tail_idx;
 269         bool done_color;
 270         unsigned int num_descs;
 271         unsigned int desc_size;
 272         u64 compl_count;
 273         void *base;
 274         dma_addr_t base_pa;
 275 } ____cacheline_aligned_in_smp;
 276
 277 struct ionic;
 278
 279 static inline void ionic_intr_init(struct ionic_dev *idev,
 280                                    struct ionic_intr_info *intr,
 281                                    unsigned long index)
 282 {
 283         ionic_intr_clean(idev->intr_ctrl, index);
 284         intr->index = index;
 285 }
 286
 287 static inline unsigned int ionic_q_space_avail(struct ionic_queue *q)
 288 {
 289         unsigned int avail = q->tail_idx;
 290
 291         if (q->head_idx >= avail)
 292                 avail += q->num_descs - q->head_idx - 1;
 293         else
 294                 avail -= q->head_idx + 1;
 295
 296         return avail;
 297 }
 298
 299 static inline bool ionic_q_has_space(struct ionic_queue *q, unsigned int want)
 300 {
 301         return ionic_q_space_avail(q) >= want;
 302 }
 303
 304 void ionic_init_devinfo(struct ionic *ionic);
 305 int ionic_dev_setup(struct ionic *ionic);
 306
 307 void ionic_dev_cmd_go(struct ionic_dev *idev, union ionic_dev_cmd *cmd);
 308 u8 ionic_dev_cmd_status(struct ionic_dev *idev);
 309 bool ionic_dev_cmd_done(struct ionic_dev *idev);
 310 void ionic_dev_cmd_comp(struct ionic_dev *idev, union ionic_dev_cmd_comp *comp);
 311
 312 void ionic_dev_cmd_identify(struct ionic_dev *idev, u8 ver);
 313 void ionic_dev_cmd_init(struct ionic_dev *idev);
 314 void ionic_dev_cmd_reset(struct ionic_dev *idev);
 315
 316 void ionic_dev_cmd_port_identify(struct ionic_dev *idev);
 317 void ionic_dev_cmd_port_init(struct ionic_dev *idev);
 318 void ionic_dev_cmd_port_reset(struct ionic_dev *idev);
 319 void ionic_dev_cmd_port_state(struct ionic_dev *idev, u8 state);
 320 void ionic_dev_cmd_port_speed(struct ionic_dev *idev, u32 speed);
 321 void ionic_dev_cmd_port_autoneg(struct ionic_dev *idev, u8 an_enable);
 322 void ionic_dev_cmd_port_fec(struct ionic_dev *idev, u8 fec_type);
 323 void ionic_dev_cmd_port_pause(struct ionic_dev *idev, u8 pause_type);
 324
 325 int ionic_set_vf_config(struct ionic *ionic, int vf, u8 attr, u8 *data);
 326 void ionic_dev_cmd_queue_identify(struct ionic_dev *idev,
 327                                   u16 lif_type, u8 qtype, u8 qver);
 328 void ionic_dev_cmd_lif_identify(struct ionic_dev *idev, u8 type, u8 ver);
 329 void ionic_dev_cmd_lif_init(struct ionic_dev *idev, u16 lif_index,
 330                             dma_addr_t addr);
 331 void ionic_dev_cmd_lif_reset(struct ionic_dev *idev, u16 lif_index);
 332 void ionic_dev_cmd_adminq_init(struct ionic_dev *idev, struct ionic_qcq *qcq,
 333                                u16 lif_index, u16 intr_index);
 334
 335 int ionic_db_page_num(struct ionic_lif *lif, int pid);
 336
 337 int ionic_cq_init(struct ionic_lif *lif, struct ionic_cq *cq,
 338                   struct ionic_intr_info *intr,
 339                   unsigned int num_descs, size_t desc_size);
 340 void ionic_cq_map(struct ionic_cq *cq, void *base, dma_addr_t base_pa);
 341 void ionic_cq_bind(struct ionic_cq *cq, struct ionic_queue *q);
 342 typedef bool (*ionic_cq_cb)(struct ionic_cq *cq, struct ionic_cq_info *cq_info);
 343 typedef void (*ionic_cq_done_cb)(void *done_arg);
 344 unsigned int ionic_cq_service(struct ionic_cq *cq, unsigned int work_to_do,
 345                               ionic_cq_cb cb, ionic_cq_done_cb done_cb,
 346                               void *done_arg);
 347
 348 int ionic_q_init(struct ionic_lif *lif, struct ionic_dev *idev,
 349                  struct ionic_queue *q, unsigned int index, const char *name,
 350                  unsigned int num_descs, size_t desc_size,
 351                  size_t sg_desc_size, unsigned int pid);
 352 void ionic_q_map(struct ionic_queue *q, void *base, dma_addr_t base_pa);
 353 void ionic_q_sg_map(struct ionic_queue *q, void *base, dma_addr_t base_pa);
 354 void ionic_q_post(struct ionic_queue *q, bool ring_doorbell, ionic_desc_cb cb,
 355                   void *cb_arg);
 356 void ionic_q_rewind(struct ionic_queue *q, struct ionic_desc_info *start);
 357 void ionic_q_service(struct ionic_queue *q, struct ionic_cq_info *cq_info,
 358                      unsigned int stop_index);
 359 int ionic_heartbeat_check(struct ionic *ionic);
 360
 361 #endif /* _IONIC_DEV_H_ */