drivers/net/ethernet/sfc/mcdi.h

   1 /****************************************************************************
   2  * Driver for Solarflare network controllers and boards
   3  * Copyright 2008-2013 Solarflare Communications Inc.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 as published
   7  * by the Free Software Foundation, incorporated herein by reference.
   8  */
   9
  10 #ifndef EFX_MCDI_H
  11 #define EFX_MCDI_H
  12
  13 /**
  14  * enum efx_mcdi_state - MCDI request handling state
  15  * @MCDI_STATE_QUIESCENT: No pending MCDI requests. If the caller holds the
  16  *      mcdi @iface_lock then they are able to move to %MCDI_STATE_RUNNING
  17  * @MCDI_STATE_RUNNING_SYNC: There is a synchronous MCDI request pending.
  18  *      Only the thread that moved into this state is allowed to move out of it.
  19  * @MCDI_STATE_RUNNING_ASYNC: There is an asynchronous MCDI request pending.
  20  * @MCDI_STATE_COMPLETED: An MCDI request has completed, but the owning thread
  21  *      has not yet consumed the result. For all other threads, equivalent to
  22  *      %MCDI_STATE_RUNNING.
  23  */
  24 enum efx_mcdi_state {
  25         MCDI_STATE_QUIESCENT,
  26         MCDI_STATE_RUNNING_SYNC,
  27         MCDI_STATE_RUNNING_ASYNC,
  28         MCDI_STATE_COMPLETED,
  29 };
  30
  31 enum efx_mcdi_mode {
  32         MCDI_MODE_POLL,
  33         MCDI_MODE_EVENTS,
  34 };
  35
  36 /**
  37  * struct efx_mcdi_iface - MCDI protocol context
  38  * @efx: The associated NIC.
  39  * @state: Request handling state. Waited for by @wq.
  40  * @mode: Poll for mcdi completion, or wait for an mcdi_event.
  41  * @wq: Wait queue for threads waiting for @state != %MCDI_STATE_RUNNING
  42  * @new_epoch: Indicates start of day or start of MC reboot recovery
  43  * @iface_lock: Serialises access to @seqno, @credits and response metadata
  44  * @seqno: The next sequence number to use for mcdi requests.
  45  * @credits: Number of spurious MCDI completion events allowed before we
  46  *     trigger a fatal error
  47  * @resprc: Response error/success code (Linux numbering)
  48  * @resp_hdr_len: Response header length
  49  * @resp_data_len: Response data (SDU or error) length
  50  * @async_lock: Serialises access to @async_list while event processing is
  51  *      enabled
  52  * @async_list: Queue of asynchronous requests
  53  * @async_timer: Timer for asynchronous request timeout
  54  */
  55 struct efx_mcdi_iface {
  56         struct efx_nic *efx;
  57         enum efx_mcdi_state state;
  58         enum efx_mcdi_mode mode;
  59         wait_queue_head_t wq;
  60         spinlock_t iface_lock;
  61         bool new_epoch;
  62         unsigned int credits;
  63         unsigned int seqno;
  64         int resprc;
  65         size_t resp_hdr_len;
  66         size_t resp_data_len;
  67         spinlock_t async_lock;
  68         struct list_head async_list;
  69         struct timer_list async_timer;
  70 };
  71
  72 struct efx_mcdi_mon {
  73         struct efx_buffer dma_buf;
  74         struct mutex update_lock;
  75         unsigned long last_update;
  76         struct device *device;
  77         struct efx_mcdi_mon_attribute *attrs;
  78         unsigned int n_attrs;
  79 };
  80
  81 struct efx_mcdi_mtd_partition {
  82         struct efx_mtd_partition common;
  83         bool updating;
  84         u16 nvram_type;
  85         u16 fw_subtype;
  86 };
  87
  88 #define to_efx_mcdi_mtd_partition(mtd)                          \
  89         container_of(mtd, struct efx_mcdi_mtd_partition, common.mtd)
  90
  91 /**
  92  * struct efx_mcdi_data - extra state for NICs that implement MCDI
  93  * @iface: Interface/protocol state
  94  * @hwmon: Hardware monitor state
  95  */
  96 struct efx_mcdi_data {
  97         struct efx_mcdi_iface iface;
  98 #ifdef CONFIG_SFC_MCDI_MON
  99         struct efx_mcdi_mon hwmon;
 100 #endif
 101 };
 102
 103 #ifdef CONFIG_SFC_MCDI_MON
 104 static inline struct efx_mcdi_mon *efx_mcdi_mon(struct efx_nic *efx)
 105 {
 106         EFX_BUG_ON_PARANOID(!efx->mcdi);
 107         return &efx->mcdi->hwmon;
 108 }
 109 #endif
 110
 111 extern int efx_mcdi_init(struct efx_nic *efx);
 112 extern void efx_mcdi_fini(struct efx_nic *efx);
 113
 114 extern int efx_mcdi_rpc(struct efx_nic *efx, unsigned cmd,
 115                         const efx_dword_t *inbuf, size_t inlen,
 116                         efx_dword_t *outbuf, size_t outlen,
 117                         size_t *outlen_actual);
 118
 119 extern int efx_mcdi_rpc_start(struct efx_nic *efx, unsigned cmd,
 120                               const efx_dword_t *inbuf, size_t inlen);
 121 extern int efx_mcdi_rpc_finish(struct efx_nic *efx, unsigned cmd, size_t inlen,
 122                                efx_dword_t *outbuf, size_t outlen,
 123                                size_t *outlen_actual);
 124
 125 typedef void efx_mcdi_async_completer(struct efx_nic *efx,
 126                                       unsigned long cookie, int rc,
 127                                       efx_dword_t *outbuf,
 128                                       size_t outlen_actual);
 129 extern int efx_mcdi_rpc_async(struct efx_nic *efx, unsigned int cmd,
 130                               const efx_dword_t *inbuf, size_t inlen,
 131                               size_t outlen,
 132                               efx_mcdi_async_completer *complete,
 133                               unsigned long cookie);
 134
 135 extern int efx_mcdi_poll_reboot(struct efx_nic *efx);
 136 extern void efx_mcdi_mode_poll(struct efx_nic *efx);
 137 extern void efx_mcdi_mode_event(struct efx_nic *efx);
 138 extern void efx_mcdi_flush_async(struct efx_nic *efx);
 139
 140 extern void efx_mcdi_process_event(struct efx_channel *channel,
 141                                    efx_qword_t *event);
 142 extern void efx_mcdi_sensor_event(struct efx_nic *efx, efx_qword_t *ev);
 143
 144 /* We expect that 16- and 32-bit fields in MCDI requests and responses
 145  * are appropriately aligned, but 64-bit fields are only
 146  * 32-bit-aligned.  Also, on Siena we must copy to the MC shared
 147  * memory strictly 32 bits at a time, so add any necessary padding.
 148  */
 149 #define MCDI_DECLARE_BUF(_name, _len)                                   \
 150         efx_dword_t _name[DIV_ROUND_UP(_len, 4)]
 151 #define _MCDI_PTR(_buf, _offset)                                        \
 152         ((u8 *)(_buf) + (_offset))
 153 #define MCDI_PTR(_buf, _field)                                          \
 154         _MCDI_PTR(_buf, MC_CMD_ ## _field ## _OFST)
 155 #define _MCDI_CHECK_ALIGN(_ofst, _align)                                \
 156         ((_ofst) + BUILD_BUG_ON_ZERO((_ofst) & (_align - 1)))
 157 #define _MCDI_DWORD(_buf, _field)                                       \
 158         ((_buf) + (_MCDI_CHECK_ALIGN(MC_CMD_ ## _field ## _OFST, 4) >> 2))
 159
 160 #define MCDI_WORD(_buf, _field)                                         \
 161         ((u16)BUILD_BUG_ON_ZERO(MC_CMD_ ## _field ## _LEN != 2) +       \
 162          le16_to_cpu(*(__force const __le16 *)MCDI_PTR(_buf, _field)))
 163 #define MCDI_SET_DWORD(_buf, _field, _value)                            \
 164         EFX_POPULATE_DWORD_1(*_MCDI_DWORD(_buf, _field), EFX_DWORD_0, _value)
 165 #define MCDI_DWORD(_buf, _field)                                        \
 166         EFX_DWORD_FIELD(*_MCDI_DWORD(_buf, _field), EFX_DWORD_0)
 167 #define MCDI_POPULATE_DWORD_1(_buf, _field, _name1, _value1)            \
 168         EFX_POPULATE_DWORD_1(*_MCDI_DWORD(_buf, _field),                \
 169                              MC_CMD_ ## _name1, _value1)
 170 #define MCDI_POPULATE_DWORD_2(_buf, _field, _name1, _value1,            \
 171                               _name2, _value2)                          \
 172         EFX_POPULATE_DWORD_2(*_MCDI_DWORD(_buf, _field),                \
 173                              MC_CMD_ ## _name1, _value1,                \
 174                              MC_CMD_ ## _name2, _value2)
 175 #define MCDI_POPULATE_DWORD_3(_buf, _field, _name1, _value1,            \
 176                               _name2, _value2, _name3, _value3)         \
 177         EFX_POPULATE_DWORD_3(*_MCDI_DWORD(_buf, _field),                \
 178                              MC_CMD_ ## _name1, _value1,                \
 179                              MC_CMD_ ## _name2, _value2,                \
 180                              MC_CMD_ ## _name3, _value3)
 181 #define MCDI_POPULATE_DWORD_4(_buf, _field, _name1, _value1,            \
 182                               _name2, _value2, _name3, _value3,         \
 183                               _name4, _value4)                          \
 184         EFX_POPULATE_DWORD_4(*_MCDI_DWORD(_buf, _field),                \
 185                              MC_CMD_ ## _name1, _value1,                \
 186                              MC_CMD_ ## _name2, _value2,                \
 187                              MC_CMD_ ## _name3, _value3,                \
 188                              MC_CMD_ ## _name4, _value4)
 189 #define MCDI_POPULATE_DWORD_5(_buf, _field, _name1, _value1,            \
 190                               _name2, _value2, _name3, _value3,         \
 191                               _name4, _value4, _name5, _value5)         \
 192         EFX_POPULATE_DWORD_5(*_MCDI_DWORD(_buf, _field),                \
 193                              MC_CMD_ ## _name1, _value1,                \
 194                              MC_CMD_ ## _name2, _value2,                \
 195                              MC_CMD_ ## _name3, _value3,                \
 196                              MC_CMD_ ## _name4, _value4,                \
 197                              MC_CMD_ ## _name5, _value5)
 198 #define MCDI_POPULATE_DWORD_6(_buf, _field, _name1, _value1,            \
 199                               _name2, _value2, _name3, _value3,         \
 200                               _name4, _value4, _name5, _value5,         \
 201                               _name6, _value6)                          \
 202         EFX_POPULATE_DWORD_6(*_MCDI_DWORD(_buf, _field),                \
 203                              MC_CMD_ ## _name1, _value1,                \
 204                              MC_CMD_ ## _name2, _value2,                \
 205                              MC_CMD_ ## _name3, _value3,                \
 206                              MC_CMD_ ## _name4, _value4,                \
 207                              MC_CMD_ ## _name5, _value5,                \
 208                              MC_CMD_ ## _name6, _value6)
 209 #define MCDI_POPULATE_DWORD_7(_buf, _field, _name1, _value1,            \
 210                               _name2, _value2, _name3, _value3,         \
 211                               _name4, _value4, _name5, _value5,         \
 212                               _name6, _value6, _name7, _value7)         \
 213         EFX_POPULATE_DWORD_7(*_MCDI_DWORD(_buf, _field),                \
 214                              MC_CMD_ ## _name1, _value1,                \
 215                              MC_CMD_ ## _name2, _value2,                \
 216                              MC_CMD_ ## _name3, _value3,                \
 217                              MC_CMD_ ## _name4, _value4,                \
 218                              MC_CMD_ ## _name5, _value5,                \
 219                              MC_CMD_ ## _name6, _value6,                \
 220                              MC_CMD_ ## _name7, _value7)
 221 #define MCDI_SET_QWORD(_buf, _field, _value)                            \
 222         do {                                                            \
 223                 EFX_POPULATE_DWORD_1(_MCDI_DWORD(_buf, _field)[0],      \
 224                                      EFX_DWORD_0, (u32)(_value));       \
 225                 EFX_POPULATE_DWORD_1(_MCDI_DWORD(_buf, _field)[1],      \
 226                                      EFX_DWORD_0, (u64)(_value) >> 32); \
 227         } while (0)
 228 #define MCDI_QWORD(_buf, _field)                                        \
 229         (EFX_DWORD_FIELD(_MCDI_DWORD(_buf, _field)[0], EFX_DWORD_0) |   \
 230         (u64)EFX_DWORD_FIELD(_MCDI_DWORD(_buf, _field)[1], EFX_DWORD_0) << 32)
 231 #define MCDI_FIELD(_ptr, _type, _field)                                 \
 232         EFX_EXTRACT_DWORD(                                              \
 233                 *(efx_dword_t *)                                        \
 234                 _MCDI_PTR(_ptr, MC_CMD_ ## _type ## _ ## _field ## _OFST & ~3),\
 235                 MC_CMD_ ## _type ## _ ## _field ## _LBN & 0x1f, \
 236                 (MC_CMD_ ## _type ## _ ## _field ## _LBN & 0x1f) +      \
 237                 MC_CMD_ ## _type ## _ ## _field ## _WIDTH - 1)
 238
 239 #define _MCDI_ARRAY_PTR(_buf, _field, _index, _align)                   \
 240         (_MCDI_PTR(_buf, _MCDI_CHECK_ALIGN(MC_CMD_ ## _field ## _OFST, _align))\
 241          + (_index) * _MCDI_CHECK_ALIGN(MC_CMD_ ## _field ## _LEN, _align))
 242 #define MCDI_DECLARE_STRUCT_PTR(_name)                                  \
 243         efx_dword_t *_name
 244 #define MCDI_ARRAY_STRUCT_PTR(_buf, _field, _index)                     \
 245         ((efx_dword_t *)_MCDI_ARRAY_PTR(_buf, _field, _index, 4))
 246 #define MCDI_VAR_ARRAY_LEN(_len, _field)                                \
 247         min_t(size_t, MC_CMD_ ## _field ## _MAXNUM,                     \
 248               ((_len) - MC_CMD_ ## _field ## _OFST) / MC_CMD_ ## _field ## _LEN)
 249 #define MCDI_ARRAY_WORD(_buf, _field, _index)                           \
 250         (BUILD_BUG_ON_ZERO(MC_CMD_ ## _field ## _LEN != 2) +            \
 251          le16_to_cpu(*(__force const __le16 *)                          \
 252                      _MCDI_ARRAY_PTR(_buf, _field, _index, 2)))
 253 #define _MCDI_ARRAY_DWORD(_buf, _field, _index)                         \
 254         (BUILD_BUG_ON_ZERO(MC_CMD_ ## _field ## _LEN != 4) +            \
 255          (efx_dword_t *)_MCDI_ARRAY_PTR(_buf, _field, _index, 4))
 256 #define MCDI_SET_ARRAY_DWORD(_buf, _field, _index, _value)              \
 257         EFX_SET_DWORD_FIELD(*_MCDI_ARRAY_DWORD(_buf, _field, _index),   \
 258                             EFX_DWORD_0, _value)
 259 #define MCDI_ARRAY_DWORD(_buf, _field, _index)                          \
 260         EFX_DWORD_FIELD(*_MCDI_ARRAY_DWORD(_buf, _field, _index), EFX_DWORD_0)
 261 #define _MCDI_ARRAY_QWORD(_buf, _field, _index)                         \
 262         (BUILD_BUG_ON_ZERO(MC_CMD_ ## _field ## _LEN != 8) +            \
 263          (efx_dword_t *)_MCDI_ARRAY_PTR(_buf, _field, _index, 4))
 264 #define MCDI_SET_ARRAY_QWORD(_buf, _field, _index, _value)              \
 265         do {                                                            \
 266                 EFX_SET_DWORD_FIELD(_MCDI_ARRAY_QWORD(_buf, _field, _index)[0],\
 267                                     EFX_DWORD_0, (u32)(_value));        \
 268                 EFX_SET_DWORD_FIELD(_MCDI_ARRAY_QWORD(_buf, _field, _index)[1],\
 269                                     EFX_DWORD_0, (u64)(_value) >> 32);  \
 270         } while (0)
 271 #define MCDI_ARRAY_FIELD(_buf, _field1, _type, _index, _field2)         \
 272         MCDI_FIELD(MCDI_ARRAY_STRUCT_PTR(_buf, _field1, _index),        \
 273                    _type ## _TYPEDEF, _field2)
 274
 275 #define MCDI_EVENT_FIELD(_ev, _field)                   \
 276         EFX_QWORD_FIELD(_ev, MCDI_EVENT_ ## _field)
 277
 278 extern void efx_mcdi_print_fwver(struct efx_nic *efx, char *buf, size_t len);
 279 extern int efx_mcdi_get_board_cfg(struct efx_nic *efx, u8 *mac_address,
 280                                   u16 *fw_subtype_list, u32 *capabilities);
 281 extern int efx_mcdi_log_ctrl(struct efx_nic *efx, bool evq, bool uart,
 282                              u32 dest_evq);
 283 extern int efx_mcdi_nvram_types(struct efx_nic *efx, u32 *nvram_types_out);
 284 extern int efx_mcdi_nvram_info(struct efx_nic *efx, unsigned int type,
 285                                size_t *size_out, size_t *erase_size_out,
 286                                bool *protected_out);
 287 extern int efx_mcdi_nvram_test_all(struct efx_nic *efx);
 288 extern int efx_mcdi_handle_assertion(struct efx_nic *efx);
 289 extern void efx_mcdi_set_id_led(struct efx_nic *efx, enum efx_led_mode mode);
 290 extern int efx_mcdi_wol_filter_set_magic(struct efx_nic *efx,
 291                                          const u8 *mac, int *id_out);
 292 extern int efx_mcdi_wol_filter_get_magic(struct efx_nic *efx, int *id_out);
 293 extern int efx_mcdi_wol_filter_remove(struct efx_nic *efx, int id);
 294 extern int efx_mcdi_wol_filter_reset(struct efx_nic *efx);
 295 extern int efx_mcdi_flush_rxqs(struct efx_nic *efx);
 296 extern int efx_mcdi_port_probe(struct efx_nic *efx);
 297 extern void efx_mcdi_port_remove(struct efx_nic *efx);
 298 extern int efx_mcdi_port_reconfigure(struct efx_nic *efx);
 299 extern int efx_mcdi_port_get_number(struct efx_nic *efx);
 300 extern u32 efx_mcdi_phy_get_caps(struct efx_nic *efx);
 301 extern void efx_mcdi_process_link_change(struct efx_nic *efx, efx_qword_t *ev);
 302 extern int efx_mcdi_set_mac(struct efx_nic *efx);
 303 #define EFX_MC_STATS_GENERATION_INVALID ((__force __le64)(-1))
 304 extern void efx_mcdi_mac_start_stats(struct efx_nic *efx);
 305 extern void efx_mcdi_mac_stop_stats(struct efx_nic *efx);
 306 extern bool efx_mcdi_mac_check_fault(struct efx_nic *efx);
 307 extern enum reset_type efx_mcdi_map_reset_reason(enum reset_type reason);
 308 extern int efx_mcdi_reset(struct efx_nic *efx, enum reset_type method);
 309 extern int efx_mcdi_set_workaround(struct efx_nic *efx, u32 type, bool enabled);
 310
 311 #ifdef CONFIG_SFC_MCDI_MON
 312 extern int efx_mcdi_mon_probe(struct efx_nic *efx);
 313 extern void efx_mcdi_mon_remove(struct efx_nic *efx);
 314 #else
 315 static inline int efx_mcdi_mon_probe(struct efx_nic *efx) { return 0; }
 316 static inline void efx_mcdi_mon_remove(struct efx_nic *efx) {}
 317 #endif
 318
 319 #ifdef CONFIG_SFC_MTD
 320 extern int efx_mcdi_mtd_read(struct mtd_info *mtd, loff_t start,
 321                              size_t len, size_t *retlen, u8 *buffer);
 322 extern int efx_mcdi_mtd_erase(struct mtd_info *mtd, loff_t start, size_t len);
 323 extern int efx_mcdi_mtd_write(struct mtd_info *mtd, loff_t start,
 324                               size_t len, size_t *retlen, const u8 *buffer);
 325 extern int efx_mcdi_mtd_sync(struct mtd_info *mtd);
 326 extern void efx_mcdi_mtd_rename(struct efx_mtd_partition *part);
 327 #endif
 328
 329 #endif /* EFX_MCDI_H */