1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /****************************************************************************
3 * Driver for Solarflare network controllers and boards
4 * Copyright 2008-2013 Solarflare Communications Inc.
11 * enum efx_mcdi_state - MCDI request handling state
12 * @MCDI_STATE_QUIESCENT: No pending MCDI requests. If the caller holds the
13 * mcdi @iface_lock then they are able to move to %MCDI_STATE_RUNNING
14 * @MCDI_STATE_RUNNING_SYNC: There is a synchronous MCDI request pending.
15 * Only the thread that moved into this state is allowed to move out of it.
16 * @MCDI_STATE_RUNNING_ASYNC: There is an asynchronous MCDI request pending.
17 * @MCDI_STATE_PROXY_WAIT: An MCDI request has completed with a response that
18 * indicates we must wait for a proxy try again message.
19 * @MCDI_STATE_COMPLETED: An MCDI request has completed, but the owning thread
20 * has not yet consumed the result. For all other threads, equivalent to
21 * %MCDI_STATE_RUNNING.
25 MCDI_STATE_RUNNING_SYNC,
26 MCDI_STATE_RUNNING_ASYNC,
27 MCDI_STATE_PROXY_WAIT,
32 * enum efx_mcdi_mode - MCDI transaction mode
33 * @MCDI_MODE_POLL: poll for MCDI completion, until timeout
34 * @MCDI_MODE_EVENTS: wait for an mcdi_event. On timeout, poll once
35 * @MCDI_MODE_FAIL: we think MCDI is dead, so fail-fast all calls
44 * struct efx_mcdi_iface - MCDI protocol context
45 * @efx: The associated NIC.
46 * @state: Request handling state. Waited for by @wq.
47 * @mode: Poll for mcdi completion, or wait for an mcdi_event.
48 * @wq: Wait queue for threads waiting for @state != %MCDI_STATE_RUNNING
49 * @new_epoch: Indicates start of day or start of MC reboot recovery
50 * @iface_lock: Serialises access to @seqno, @credits and response metadata
51 * @seqno: The next sequence number to use for mcdi requests.
52 * @credits: Number of spurious MCDI completion events allowed before we
53 * trigger a fatal error
54 * @resprc: Response error/success code (Linux numbering)
55 * @resp_hdr_len: Response header length
56 * @resp_data_len: Response data (SDU or error) length
57 * @async_lock: Serialises access to @async_list while event processing is
59 * @async_list: Queue of asynchronous requests
60 * @async_timer: Timer for asynchronous request timeout
61 * @logging_buffer: buffer that may be used to build MCDI tracing messages
62 * @logging_enabled: whether to trace MCDI
63 * @proxy_rx_handle: Most recently received proxy authorisation handle
64 * @proxy_rx_status: Status of most recent proxy authorisation
65 * @proxy_rx_wq: Wait queue for updates to proxy_rx_handle
67 struct efx_mcdi_iface {
69 enum efx_mcdi_state state;
70 enum efx_mcdi_mode mode;
72 spinlock_t iface_lock;
80 spinlock_t async_lock;
81 struct list_head async_list;
82 struct timer_list async_timer;
83 #ifdef CONFIG_SFC_MCDI_LOGGING
87 unsigned int proxy_rx_handle;
89 wait_queue_head_t proxy_rx_wq;
93 struct efx_buffer dma_buf;
94 struct mutex update_lock;
95 unsigned long last_update;
96 struct device *device;
97 struct efx_mcdi_mon_attribute *attrs;
98 struct attribute_group group;
99 const struct attribute_group *groups[2];
100 unsigned int n_attrs;
103 struct efx_mcdi_mtd_partition {
104 struct efx_mtd_partition common;
110 #define to_efx_mcdi_mtd_partition(mtd) \
111 container_of(mtd, struct efx_mcdi_mtd_partition, common.mtd)
114 * struct efx_mcdi_data - extra state for NICs that implement MCDI
115 * @iface: Interface/protocol state
116 * @hwmon: Hardware monitor state
117 * @fn_flags: Flags for this function, as returned by %MC_CMD_DRV_ATTACH.
119 struct efx_mcdi_data {
120 struct efx_mcdi_iface iface;
121 #ifdef CONFIG_SFC_MCDI_MON
122 struct efx_mcdi_mon hwmon;
127 static inline struct efx_mcdi_iface *efx_mcdi(struct efx_nic *efx)
129 EFX_WARN_ON_PARANOID(!efx->mcdi);
130 return &efx->mcdi->iface;
133 #ifdef CONFIG_SFC_MCDI_MON
134 static inline struct efx_mcdi_mon *efx_mcdi_mon(struct efx_nic *efx)
136 EFX_WARN_ON_PARANOID(!efx->mcdi);
137 return &efx->mcdi->hwmon;
141 int efx_mcdi_init(struct efx_nic *efx);
142 void efx_mcdi_detach(struct efx_nic *efx);
143 void efx_mcdi_fini(struct efx_nic *efx);
145 int efx_mcdi_rpc(struct efx_nic *efx, unsigned cmd, const efx_dword_t *inbuf,
146 size_t inlen, efx_dword_t *outbuf, size_t outlen,
147 size_t *outlen_actual);
148 int efx_mcdi_rpc_quiet(struct efx_nic *efx, unsigned cmd,
149 const efx_dword_t *inbuf, size_t inlen,
150 efx_dword_t *outbuf, size_t outlen,
151 size_t *outlen_actual);
153 int efx_mcdi_rpc_start(struct efx_nic *efx, unsigned cmd,
154 const efx_dword_t *inbuf, size_t inlen);
155 int efx_mcdi_rpc_finish(struct efx_nic *efx, unsigned cmd, size_t inlen,
156 efx_dword_t *outbuf, size_t outlen,
157 size_t *outlen_actual);
158 int efx_mcdi_rpc_finish_quiet(struct efx_nic *efx, unsigned cmd,
159 size_t inlen, efx_dword_t *outbuf,
160 size_t outlen, size_t *outlen_actual);
162 typedef void efx_mcdi_async_completer(struct efx_nic *efx,
163 unsigned long cookie, int rc,
165 size_t outlen_actual);
166 int efx_mcdi_rpc_async(struct efx_nic *efx, unsigned int cmd,
167 const efx_dword_t *inbuf, size_t inlen, size_t outlen,
168 efx_mcdi_async_completer *complete,
169 unsigned long cookie);
170 int efx_mcdi_rpc_async_quiet(struct efx_nic *efx, unsigned int cmd,
171 const efx_dword_t *inbuf, size_t inlen,
173 efx_mcdi_async_completer *complete,
174 unsigned long cookie);
176 void efx_mcdi_display_error(struct efx_nic *efx, unsigned cmd,
177 size_t inlen, efx_dword_t *outbuf,
178 size_t outlen, int rc);
180 int efx_mcdi_poll_reboot(struct efx_nic *efx);
181 void efx_mcdi_mode_poll(struct efx_nic *efx);
182 void efx_mcdi_mode_event(struct efx_nic *efx);
183 void efx_mcdi_flush_async(struct efx_nic *efx);
185 void efx_mcdi_process_event(struct efx_channel *channel, efx_qword_t *event);
186 void efx_mcdi_sensor_event(struct efx_nic *efx, efx_qword_t *ev);
188 /* We expect that 16- and 32-bit fields in MCDI requests and responses
189 * are appropriately aligned, but 64-bit fields are only
190 * 32-bit-aligned. Also, on Siena we must copy to the MC shared
191 * memory strictly 32 bits at a time, so add any necessary padding.
193 #define MCDI_TX_BUF_LEN(_len) DIV_ROUND_UP((_len), 4)
194 #define _MCDI_DECLARE_BUF(_name, _len) \
195 efx_dword_t _name[DIV_ROUND_UP(_len, 4)]
196 #define MCDI_DECLARE_BUF(_name, _len) \
197 _MCDI_DECLARE_BUF(_name, _len) = {{{0}}}
198 #define MCDI_DECLARE_BUF_ERR(_name) \
199 MCDI_DECLARE_BUF(_name, 8)
200 #define _MCDI_PTR(_buf, _offset) \
201 ((u8 *)(_buf) + (_offset))
202 #define MCDI_PTR(_buf, _field) \
203 _MCDI_PTR(_buf, MC_CMD_ ## _field ## _OFST)
204 #define _MCDI_CHECK_ALIGN(_ofst, _align) \
205 ((_ofst) + BUILD_BUG_ON_ZERO((_ofst) & (_align - 1)))
206 #define _MCDI_DWORD(_buf, _field) \
207 ((_buf) + (_MCDI_CHECK_ALIGN(MC_CMD_ ## _field ## _OFST, 4) >> 2))
208 #define _MCDI_STRUCT_DWORD(_buf, _field) \
209 ((_buf) + (_MCDI_CHECK_ALIGN(_field ## _OFST, 4) >> 2))
211 #define MCDI_BYTE(_buf, _field) \
212 ((void)BUILD_BUG_ON_ZERO(MC_CMD_ ## _field ## _LEN != 1), \
213 *MCDI_PTR(_buf, _field))
214 #define MCDI_WORD(_buf, _field) \
215 ((u16)BUILD_BUG_ON_ZERO(MC_CMD_ ## _field ## _LEN != 2) + \
216 le16_to_cpu(*(__force const __le16 *)MCDI_PTR(_buf, _field)))
217 #define MCDI_SET_DWORD(_buf, _field, _value) \
218 EFX_POPULATE_DWORD_1(*_MCDI_DWORD(_buf, _field), EFX_DWORD_0, _value)
219 #define MCDI_STRUCT_SET_DWORD(_buf, _field, _value) \
220 EFX_POPULATE_DWORD_1(*_MCDI_STRUCT_DWORD(_buf, _field), EFX_DWORD_0, _value)
221 #define MCDI_DWORD(_buf, _field) \
222 EFX_DWORD_FIELD(*_MCDI_DWORD(_buf, _field), EFX_DWORD_0)
223 #define MCDI_POPULATE_DWORD_1(_buf, _field, _name1, _value1) \
224 EFX_POPULATE_DWORD_1(*_MCDI_DWORD(_buf, _field), \
225 MC_CMD_ ## _name1, _value1)
226 #define MCDI_POPULATE_DWORD_2(_buf, _field, _name1, _value1, \
228 EFX_POPULATE_DWORD_2(*_MCDI_DWORD(_buf, _field), \
229 MC_CMD_ ## _name1, _value1, \
230 MC_CMD_ ## _name2, _value2)
231 #define MCDI_POPULATE_DWORD_3(_buf, _field, _name1, _value1, \
232 _name2, _value2, _name3, _value3) \
233 EFX_POPULATE_DWORD_3(*_MCDI_DWORD(_buf, _field), \
234 MC_CMD_ ## _name1, _value1, \
235 MC_CMD_ ## _name2, _value2, \
236 MC_CMD_ ## _name3, _value3)
237 #define MCDI_POPULATE_DWORD_4(_buf, _field, _name1, _value1, \
238 _name2, _value2, _name3, _value3, \
240 EFX_POPULATE_DWORD_4(*_MCDI_DWORD(_buf, _field), \
241 MC_CMD_ ## _name1, _value1, \
242 MC_CMD_ ## _name2, _value2, \
243 MC_CMD_ ## _name3, _value3, \
244 MC_CMD_ ## _name4, _value4)
245 #define MCDI_POPULATE_DWORD_5(_buf, _field, _name1, _value1, \
246 _name2, _value2, _name3, _value3, \
247 _name4, _value4, _name5, _value5) \
248 EFX_POPULATE_DWORD_5(*_MCDI_DWORD(_buf, _field), \
249 MC_CMD_ ## _name1, _value1, \
250 MC_CMD_ ## _name2, _value2, \
251 MC_CMD_ ## _name3, _value3, \
252 MC_CMD_ ## _name4, _value4, \
253 MC_CMD_ ## _name5, _value5)
254 #define MCDI_POPULATE_DWORD_6(_buf, _field, _name1, _value1, \
255 _name2, _value2, _name3, _value3, \
256 _name4, _value4, _name5, _value5, \
258 EFX_POPULATE_DWORD_6(*_MCDI_DWORD(_buf, _field), \
259 MC_CMD_ ## _name1, _value1, \
260 MC_CMD_ ## _name2, _value2, \
261 MC_CMD_ ## _name3, _value3, \
262 MC_CMD_ ## _name4, _value4, \
263 MC_CMD_ ## _name5, _value5, \
264 MC_CMD_ ## _name6, _value6)
265 #define MCDI_POPULATE_DWORD_7(_buf, _field, _name1, _value1, \
266 _name2, _value2, _name3, _value3, \
267 _name4, _value4, _name5, _value5, \
268 _name6, _value6, _name7, _value7) \
269 EFX_POPULATE_DWORD_7(*_MCDI_DWORD(_buf, _field), \
270 MC_CMD_ ## _name1, _value1, \
271 MC_CMD_ ## _name2, _value2, \
272 MC_CMD_ ## _name3, _value3, \
273 MC_CMD_ ## _name4, _value4, \
274 MC_CMD_ ## _name5, _value5, \
275 MC_CMD_ ## _name6, _value6, \
276 MC_CMD_ ## _name7, _value7)
277 #define MCDI_SET_QWORD(_buf, _field, _value) \
279 EFX_POPULATE_DWORD_1(_MCDI_DWORD(_buf, _field)[0], \
280 EFX_DWORD_0, (u32)(_value)); \
281 EFX_POPULATE_DWORD_1(_MCDI_DWORD(_buf, _field)[1], \
282 EFX_DWORD_0, (u64)(_value) >> 32); \
284 #define MCDI_QWORD(_buf, _field) \
285 (EFX_DWORD_FIELD(_MCDI_DWORD(_buf, _field)[0], EFX_DWORD_0) | \
286 (u64)EFX_DWORD_FIELD(_MCDI_DWORD(_buf, _field)[1], EFX_DWORD_0) << 32)
287 #define MCDI_FIELD(_ptr, _type, _field) \
290 _MCDI_PTR(_ptr, MC_CMD_ ## _type ## _ ## _field ## _OFST & ~3),\
291 MC_CMD_ ## _type ## _ ## _field ## _LBN & 0x1f, \
292 (MC_CMD_ ## _type ## _ ## _field ## _LBN & 0x1f) + \
293 MC_CMD_ ## _type ## _ ## _field ## _WIDTH - 1)
295 #define _MCDI_ARRAY_PTR(_buf, _field, _index, _align) \
296 (_MCDI_PTR(_buf, _MCDI_CHECK_ALIGN(MC_CMD_ ## _field ## _OFST, _align))\
297 + (_index) * _MCDI_CHECK_ALIGN(MC_CMD_ ## _field ## _LEN, _align))
298 #define MCDI_DECLARE_STRUCT_PTR(_name) \
300 #define MCDI_ARRAY_STRUCT_PTR(_buf, _field, _index) \
301 ((efx_dword_t *)_MCDI_ARRAY_PTR(_buf, _field, _index, 4))
302 #define MCDI_VAR_ARRAY_LEN(_len, _field) \
303 min_t(size_t, MC_CMD_ ## _field ## _MAXNUM, \
304 ((_len) - MC_CMD_ ## _field ## _OFST) / MC_CMD_ ## _field ## _LEN)
305 #define MCDI_ARRAY_WORD(_buf, _field, _index) \
306 (BUILD_BUG_ON_ZERO(MC_CMD_ ## _field ## _LEN != 2) + \
307 le16_to_cpu(*(__force const __le16 *) \
308 _MCDI_ARRAY_PTR(_buf, _field, _index, 2)))
309 #define _MCDI_ARRAY_DWORD(_buf, _field, _index) \
310 (BUILD_BUG_ON_ZERO(MC_CMD_ ## _field ## _LEN != 4) + \
311 (efx_dword_t *)_MCDI_ARRAY_PTR(_buf, _field, _index, 4))
312 #define MCDI_SET_ARRAY_DWORD(_buf, _field, _index, _value) \
313 EFX_SET_DWORD_FIELD(*_MCDI_ARRAY_DWORD(_buf, _field, _index), \
315 #define MCDI_ARRAY_DWORD(_buf, _field, _index) \
316 EFX_DWORD_FIELD(*_MCDI_ARRAY_DWORD(_buf, _field, _index), EFX_DWORD_0)
317 #define _MCDI_ARRAY_QWORD(_buf, _field, _index) \
318 (BUILD_BUG_ON_ZERO(MC_CMD_ ## _field ## _LEN != 8) + \
319 (efx_dword_t *)_MCDI_ARRAY_PTR(_buf, _field, _index, 4))
320 #define MCDI_SET_ARRAY_QWORD(_buf, _field, _index, _value) \
322 EFX_SET_DWORD_FIELD(_MCDI_ARRAY_QWORD(_buf, _field, _index)[0],\
323 EFX_DWORD_0, (u32)(_value)); \
324 EFX_SET_DWORD_FIELD(_MCDI_ARRAY_QWORD(_buf, _field, _index)[1],\
325 EFX_DWORD_0, (u64)(_value) >> 32); \
327 #define MCDI_ARRAY_FIELD(_buf, _field1, _type, _index, _field2) \
328 MCDI_FIELD(MCDI_ARRAY_STRUCT_PTR(_buf, _field1, _index), \
329 _type ## _TYPEDEF, _field2)
331 #define MCDI_EVENT_FIELD(_ev, _field) \
332 EFX_QWORD_FIELD(_ev, MCDI_EVENT_ ## _field)
334 #define MCDI_CAPABILITY(field) \
335 MC_CMD_GET_CAPABILITIES_V8_OUT_ ## field ## _LBN
337 #define MCDI_CAPABILITY_OFST(field) \
338 MC_CMD_GET_CAPABILITIES_V8_OUT_ ## field ## _OFST
340 #define efx_has_cap(efx, field) \
341 efx->type->check_caps(efx, \
342 MCDI_CAPABILITY(field), \
343 MCDI_CAPABILITY_OFST(field))
345 void efx_mcdi_print_fwver(struct efx_nic *efx, char *buf, size_t len);
346 int efx_mcdi_get_board_cfg(struct efx_nic *efx, u8 *mac_address,
347 u16 *fw_subtype_list, u32 *capabilities);
348 int efx_mcdi_log_ctrl(struct efx_nic *efx, bool evq, bool uart, u32 dest_evq);
349 int efx_mcdi_nvram_types(struct efx_nic *efx, u32 *nvram_types_out);
350 int efx_mcdi_nvram_info(struct efx_nic *efx, unsigned int type,
351 size_t *size_out, size_t *erase_size_out,
352 bool *protected_out);
353 int efx_new_mcdi_nvram_test_all(struct efx_nic *efx);
354 int efx_mcdi_nvram_test_all(struct efx_nic *efx);
355 int efx_mcdi_handle_assertion(struct efx_nic *efx);
356 int efx_mcdi_set_id_led(struct efx_nic *efx, enum efx_led_mode mode);
357 int efx_mcdi_wol_filter_set_magic(struct efx_nic *efx, const u8 *mac,
359 int efx_mcdi_wol_filter_get_magic(struct efx_nic *efx, int *id_out);
360 int efx_mcdi_wol_filter_remove(struct efx_nic *efx, int id);
361 int efx_mcdi_wol_filter_reset(struct efx_nic *efx);
362 int efx_mcdi_flush_rxqs(struct efx_nic *efx);
363 void efx_mcdi_process_link_change(struct efx_nic *efx, efx_qword_t *ev);
364 void efx_mcdi_mac_start_stats(struct efx_nic *efx);
365 void efx_mcdi_mac_stop_stats(struct efx_nic *efx);
366 void efx_mcdi_mac_pull_stats(struct efx_nic *efx);
367 enum reset_type efx_mcdi_map_reset_reason(enum reset_type reason);
368 int efx_mcdi_reset(struct efx_nic *efx, enum reset_type method);
369 int efx_mcdi_set_workaround(struct efx_nic *efx, u32 type, bool enabled,
370 unsigned int *flags);
371 int efx_mcdi_get_workarounds(struct efx_nic *efx, unsigned int *impl_out,
372 unsigned int *enabled_out);
373 int efx_mcdi_get_privilege_mask(struct efx_nic *efx, u32 *mask);
375 #ifdef CONFIG_SFC_MCDI_MON
376 int efx_mcdi_mon_probe(struct efx_nic *efx);
377 void efx_mcdi_mon_remove(struct efx_nic *efx);
379 static inline int efx_mcdi_mon_probe(struct efx_nic *efx) { return 0; }
380 static inline void efx_mcdi_mon_remove(struct efx_nic *efx) {}
383 #ifdef CONFIG_SFC_MTD
384 int efx_mcdi_mtd_read(struct mtd_info *mtd, loff_t start, size_t len,
385 size_t *retlen, u8 *buffer);
386 int efx_mcdi_mtd_erase(struct mtd_info *mtd, loff_t start, size_t len);
387 int efx_mcdi_mtd_write(struct mtd_info *mtd, loff_t start, size_t len,
388 size_t *retlen, const u8 *buffer);
389 int efx_mcdi_mtd_sync(struct mtd_info *mtd);
390 void efx_mcdi_mtd_rename(struct efx_mtd_partition *part);
393 #endif /* EFX_MCDI_H */