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 /* 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 static_assert(sizeof(struct ionic_q_identify_cmd) == 64);
  86 static_assert(sizeof(struct ionic_q_identify_comp) == 16);
  87
  88 static_assert(sizeof(struct ionic_rx_mode_set_cmd) == 64);
  89 static_assert(sizeof(ionic_rx_mode_set_comp) == 16);
  90 static_assert(sizeof(struct ionic_rx_filter_add_cmd) == 64);
  91 static_assert(sizeof(struct ionic_rx_filter_add_comp) == 16);
  92 static_assert(sizeof(struct ionic_rx_filter_del_cmd) == 64);
  93 static_assert(sizeof(ionic_rx_filter_del_comp) == 16);
  94
  95 /* RDMA commands */
  96 static_assert(sizeof(struct ionic_rdma_reset_cmd) == 64);
  97 static_assert(sizeof(struct ionic_rdma_queue_cmd) == 64);
  98
  99 /* Events */
 100 static_assert(sizeof(struct ionic_notifyq_cmd) == 4);
 101 static_assert(sizeof(union ionic_notifyq_comp) == 64);
 102 static_assert(sizeof(struct ionic_notifyq_event) == 64);
 103 static_assert(sizeof(struct ionic_link_change_event) == 64);
 104 static_assert(sizeof(struct ionic_reset_event) == 64);
 105 static_assert(sizeof(struct ionic_heartbeat_event) == 64);
 106 static_assert(sizeof(struct ionic_log_event) == 64);
 107
 108 /* I/O */
 109 static_assert(sizeof(struct ionic_txq_desc) == 16);
 110 static_assert(sizeof(struct ionic_txq_sg_desc) == 128);
 111 static_assert(sizeof(struct ionic_txq_comp) == 16);
 112
 113 static_assert(sizeof(struct ionic_rxq_desc) == 16);
 114 static_assert(sizeof(struct ionic_rxq_sg_desc) == 128);
 115 static_assert(sizeof(struct ionic_rxq_comp) == 16);
 116
 117 /* SR/IOV */
 118 static_assert(sizeof(struct ionic_vf_setattr_cmd) == 64);
 119 static_assert(sizeof(struct ionic_vf_setattr_comp) == 16);
 120 static_assert(sizeof(struct ionic_vf_getattr_cmd) == 64);
 121 static_assert(sizeof(struct ionic_vf_getattr_comp) == 16);
 122
 123 struct ionic_devinfo {
 124         u8 asic_type;
 125         u8 asic_rev;
 126         char fw_version[IONIC_DEVINFO_FWVERS_BUFLEN + 1];
 127         char serial_num[IONIC_DEVINFO_SERIAL_BUFLEN + 1];
 128 };
 129
 130 struct ionic_dev {
 131         union ionic_dev_info_regs __iomem *dev_info_regs;
 132         union ionic_dev_cmd_regs __iomem *dev_cmd_regs;
 133
 134         unsigned long last_hb_time;
 135         u32 last_hb;
 136         u8 last_fw_status;
 137
 138         u64 __iomem *db_pages;
 139         dma_addr_t phy_db_pages;
 140
 141         struct ionic_intr __iomem *intr_ctrl;
 142         u64 __iomem *intr_status;
 143
 144         u32 port_info_sz;
 145         struct ionic_port_info *port_info;
 146         dma_addr_t port_info_pa;
 147
 148         struct ionic_devinfo dev_info;
 149 };
 150
 151 struct ionic_cq_info {
 152         void *cq_desc;
 153         struct ionic_cq_info *next;
 154         unsigned int index;
 155         bool last;
 156 };
 157
 158 struct ionic_queue;
 159 struct ionic_qcq;
 160 struct ionic_desc_info;
 161
 162 typedef void (*ionic_desc_cb)(struct ionic_queue *q,
 163                               struct ionic_desc_info *desc_info,
 164                               struct ionic_cq_info *cq_info, void *cb_arg);
 165
 166 struct ionic_page_info {
 167         struct page *page;
 168         dma_addr_t dma_addr;
 169 };
 170
 171 struct ionic_desc_info {
 172         void *desc;
 173         void *sg_desc;
 174         struct ionic_desc_info *next;
 175         unsigned int index;
 176         unsigned int left;
 177         unsigned int npages;
 178         struct ionic_page_info pages[IONIC_RX_MAX_SG_ELEMS + 1];
 179         ionic_desc_cb cb;
 180         void *cb_arg;
 181 };
 182
 183 #define IONIC_QUEUE_NAME_MAX_SZ         32
 184
 185 struct ionic_queue {
 186         u64 dbell_count;
 187         u64 drop;
 188         u64 stop;
 189         u64 wake;
 190         struct ionic_lif *lif;
 191         struct ionic_desc_info *info;
 192         struct ionic_desc_info *tail;
 193         struct ionic_desc_info *head;
 194         struct ionic_dev *idev;
 195         unsigned int index;
 196         unsigned int type;
 197         unsigned int hw_index;
 198         unsigned int hw_type;
 199         u64 dbval;
 200         void *base;
 201         void *sg_base;
 202         dma_addr_t base_pa;
 203         dma_addr_t sg_base_pa;
 204         unsigned int num_descs;
 205         unsigned int desc_size;
 206         unsigned int sg_desc_size;
 207         unsigned int pid;
 208         char name[IONIC_QUEUE_NAME_MAX_SZ];
 209 };
 210
 211 #define IONIC_INTR_INDEX_NOT_ASSIGNED   -1
 212 #define IONIC_INTR_NAME_MAX_SZ          32
 213
 214 struct ionic_intr_info {
 215         char name[IONIC_INTR_NAME_MAX_SZ];
 216         unsigned int index;
 217         unsigned int vector;
 218         u64 rearm_count;
 219         unsigned int cpu;
 220         cpumask_t affinity_mask;
 221 };
 222
 223 struct ionic_cq {
 224         void *base;
 225         dma_addr_t base_pa;
 226         struct ionic_lif *lif;
 227         struct ionic_cq_info *info;
 228         struct ionic_cq_info *tail;
 229         struct ionic_queue *bound_q;
 230         struct ionic_intr_info *bound_intr;
 231         bool done_color;
 232         unsigned int num_descs;
 233         u64 compl_count;
 234         unsigned int desc_size;
 235 };
 236
 237 struct ionic;
 238
 239 static inline void ionic_intr_init(struct ionic_dev *idev,
 240                                    struct ionic_intr_info *intr,
 241                                    unsigned long index)
 242 {
 243         ionic_intr_clean(idev->intr_ctrl, index);
 244         intr->index = index;
 245 }
 246
 247 static inline unsigned int ionic_q_space_avail(struct ionic_queue *q)
 248 {
 249         unsigned int avail = q->tail->index;
 250
 251         if (q->head->index >= avail)
 252                 avail += q->head->left - 1;
 253         else
 254                 avail -= q->head->index + 1;
 255
 256         return avail;
 257 }
 258
 259 static inline bool ionic_q_has_space(struct ionic_queue *q, unsigned int want)
 260 {
 261         return ionic_q_space_avail(q) >= want;
 262 }
 263
 264 void ionic_init_devinfo(struct ionic *ionic);
 265 int ionic_dev_setup(struct ionic *ionic);
 266 void ionic_dev_teardown(struct ionic *ionic);
 267
 268 void ionic_dev_cmd_go(struct ionic_dev *idev, union ionic_dev_cmd *cmd);
 269 u8 ionic_dev_cmd_status(struct ionic_dev *idev);
 270 bool ionic_dev_cmd_done(struct ionic_dev *idev);
 271 void ionic_dev_cmd_comp(struct ionic_dev *idev, union ionic_dev_cmd_comp *comp);
 272
 273 void ionic_dev_cmd_identify(struct ionic_dev *idev, u8 ver);
 274 void ionic_dev_cmd_init(struct ionic_dev *idev);
 275 void ionic_dev_cmd_reset(struct ionic_dev *idev);
 276
 277 void ionic_dev_cmd_port_identify(struct ionic_dev *idev);
 278 void ionic_dev_cmd_port_init(struct ionic_dev *idev);
 279 void ionic_dev_cmd_port_reset(struct ionic_dev *idev);
 280 void ionic_dev_cmd_port_state(struct ionic_dev *idev, u8 state);
 281 void ionic_dev_cmd_port_speed(struct ionic_dev *idev, u32 speed);
 282 void ionic_dev_cmd_port_autoneg(struct ionic_dev *idev, u8 an_enable);
 283 void ionic_dev_cmd_port_fec(struct ionic_dev *idev, u8 fec_type);
 284 void ionic_dev_cmd_port_pause(struct ionic_dev *idev, u8 pause_type);
 285
 286 int ionic_set_vf_config(struct ionic *ionic, int vf, u8 attr, u8 *data);
 287 void ionic_dev_cmd_queue_identify(struct ionic_dev *idev,
 288                                   u16 lif_type, u8 qtype, u8 qver);
 289 void ionic_dev_cmd_lif_identify(struct ionic_dev *idev, u8 type, u8 ver);
 290 void ionic_dev_cmd_lif_init(struct ionic_dev *idev, u16 lif_index,
 291                             dma_addr_t addr);
 292 void ionic_dev_cmd_lif_reset(struct ionic_dev *idev, u16 lif_index);
 293 void ionic_dev_cmd_adminq_init(struct ionic_dev *idev, struct ionic_qcq *qcq,
 294                                u16 lif_index, u16 intr_index);
 295
 296 int ionic_db_page_num(struct ionic_lif *lif, int pid);
 297
 298 int ionic_cq_init(struct ionic_lif *lif, struct ionic_cq *cq,
 299                   struct ionic_intr_info *intr,
 300                   unsigned int num_descs, size_t desc_size);
 301 void ionic_cq_map(struct ionic_cq *cq, void *base, dma_addr_t base_pa);
 302 void ionic_cq_bind(struct ionic_cq *cq, struct ionic_queue *q);
 303 typedef bool (*ionic_cq_cb)(struct ionic_cq *cq, struct ionic_cq_info *cq_info);
 304 typedef void (*ionic_cq_done_cb)(void *done_arg);
 305 unsigned int ionic_cq_service(struct ionic_cq *cq, unsigned int work_to_do,
 306                               ionic_cq_cb cb, ionic_cq_done_cb done_cb,
 307                               void *done_arg);
 308
 309 int ionic_q_init(struct ionic_lif *lif, struct ionic_dev *idev,
 310                  struct ionic_queue *q, unsigned int index, const char *name,
 311                  unsigned int num_descs, size_t desc_size,
 312                  size_t sg_desc_size, unsigned int pid);
 313 void ionic_q_map(struct ionic_queue *q, void *base, dma_addr_t base_pa);
 314 void ionic_q_sg_map(struct ionic_queue *q, void *base, dma_addr_t base_pa);
 315 void ionic_q_post(struct ionic_queue *q, bool ring_doorbell, ionic_desc_cb cb,
 316                   void *cb_arg);
 317 void ionic_q_rewind(struct ionic_queue *q, struct ionic_desc_info *start);
 318 void ionic_q_service(struct ionic_queue *q, struct ionic_cq_info *cq_info,
 319                      unsigned int stop_index);
 320 int ionic_heartbeat_check(struct ionic *ionic);
 321
 322 #endif /* _IONIC_DEV_H_ */