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1/* SPDX-License-Identifier: GPL-2.0-only */
2/****************************************************************************
3 * Driver for Solarflare network controllers and boards
4 * Copyright 2008-2013 Solarflare Communications Inc.
5 */
6
7#ifndef EFX_MCDI_H
8#define EFX_MCDI_H
9
10/**
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.
22 */
23enum efx_mcdi_state {
24 MCDI_STATE_QUIESCENT,
25 MCDI_STATE_RUNNING_SYNC,
26 MCDI_STATE_RUNNING_ASYNC,
27 MCDI_STATE_PROXY_WAIT,
28 MCDI_STATE_COMPLETED,
29};
30
31/**
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
36 */
37enum efx_mcdi_mode {
38 MCDI_MODE_POLL,
39 MCDI_MODE_EVENTS,
40 MCDI_MODE_FAIL,
41};
42
43/**
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
58 * enabled
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
66 */
67struct efx_mcdi_iface {
68 struct efx_nic *efx;
69 enum efx_mcdi_state state;
70 enum efx_mcdi_mode mode;
71 wait_queue_head_t wq;
72 spinlock_t iface_lock;
73 bool new_epoch;
74 unsigned int credits;
75 unsigned int seqno;
76 int resprc;
77 int resprc_raw;
78 size_t resp_hdr_len;
79 size_t resp_data_len;
80 spinlock_t async_lock;
81 struct list_head async_list;
82 struct timer_list async_timer;
83#ifdef CONFIG_SFC_MCDI_LOGGING
84 char *logging_buffer;
85 bool logging_enabled;
86#endif
87 unsigned int proxy_rx_handle;
88 int proxy_rx_status;
89 wait_queue_head_t proxy_rx_wq;
90};
91
92struct efx_mcdi_mon {
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;
101};
102
103struct efx_mcdi_mtd_partition {
104 struct efx_mtd_partition common;
105 bool updating;
106 u16 nvram_type;
107 u16 fw_subtype;
108};
109
110#define to_efx_mcdi_mtd_partition(mtd) \
111 container_of(mtd, struct efx_mcdi_mtd_partition, common.mtd)
112
113/**
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.
118 */
119struct efx_mcdi_data {
120 struct efx_mcdi_iface iface;
121#ifdef CONFIG_SFC_MCDI_MON
122 struct efx_mcdi_mon hwmon;
123#endif
124 u32 fn_flags;
125};
126
127static inline struct efx_mcdi_iface *efx_mcdi(struct efx_nic *efx)
128{
129 EFX_WARN_ON_PARANOID(!efx->mcdi);
130 return &efx->mcdi->iface;
131}
132
133#ifdef CONFIG_SFC_MCDI_MON
134static inline struct efx_mcdi_mon *efx_mcdi_mon(struct efx_nic *efx)
135{
136 EFX_WARN_ON_PARANOID(!efx->mcdi);
137 return &efx->mcdi->hwmon;
138}
139#endif
140
141int efx_mcdi_init(struct efx_nic *efx);
142void efx_mcdi_detach(struct efx_nic *efx);
143void efx_mcdi_fini(struct efx_nic *efx);
144
145int 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);
148int 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);
152
153int efx_mcdi_rpc_start(struct efx_nic *efx, unsigned cmd,
154 const efx_dword_t *inbuf, size_t inlen);
155int 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);
158int 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);
161
162typedef void efx_mcdi_async_completer(struct efx_nic *efx,
163 unsigned long cookie, int rc,
164 efx_dword_t *outbuf,
165 size_t outlen_actual);
166int 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);
170int efx_mcdi_rpc_async_quiet(struct efx_nic *efx, unsigned int cmd,
171 const efx_dword_t *inbuf, size_t inlen,
172 size_t outlen,
173 efx_mcdi_async_completer *complete,
174 unsigned long cookie);
175
176void efx_mcdi_display_error(struct efx_nic *efx, unsigned cmd,
177 size_t inlen, efx_dword_t *outbuf,
178 size_t outlen, int rc);
179
180int efx_mcdi_poll_reboot(struct efx_nic *efx);
181void efx_mcdi_mode_poll(struct efx_nic *efx);
182void efx_mcdi_mode_event(struct efx_nic *efx);
183void efx_mcdi_flush_async(struct efx_nic *efx);
184
185void efx_mcdi_process_event(struct efx_channel *channel, efx_qword_t *event);
186void efx_mcdi_sensor_event(struct efx_nic *efx, efx_qword_t *ev);
187
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.
192 */
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/* Use MCDI_STRUCT_ functions to access members of MCDI structuredefs.
205 * _buf should point to the start of the structure, typically obtained with
206 * MCDI_DECLARE_STRUCT_PTR(structure) = _MCDI_DWORD(mcdi_buf, FIELD_WHICH_IS_STRUCT);
207 */
208#define MCDI_STRUCT_PTR(_buf, _field) \
209 _MCDI_PTR(_buf, _field ## _OFST)
210#define _MCDI_CHECK_ALIGN(_ofst, _align) \
211 ((_ofst) + BUILD_BUG_ON_ZERO((_ofst) & (_align - 1)))
212#define _MCDI_DWORD(_buf, _field) \
213 ((_buf) + (_MCDI_CHECK_ALIGN(MC_CMD_ ## _field ## _OFST, 4) >> 2))
214#define _MCDI_STRUCT_DWORD(_buf, _field) \
215 ((_buf) + (_MCDI_CHECK_ALIGN(_field ## _OFST, 4) >> 2))
216
217#define MCDI_STRUCT_SET_BYTE(_buf, _field, _value) do { \
218 BUILD_BUG_ON(_field ## _LEN != 1); \
219 *(u8 *)MCDI_STRUCT_PTR(_buf, _field) = _value; \
220 } while (0)
221#define MCDI_STRUCT_POPULATE_BYTE_1(_buf, _field, _name, _value) do { \
222 efx_dword_t _temp; \
223 EFX_POPULATE_DWORD_1(_temp, _name, _value); \
224 MCDI_STRUCT_SET_BYTE(_buf, _field, \
225 EFX_DWORD_FIELD(_temp, EFX_BYTE_0)); \
226 } while (0)
227#define MCDI_BYTE(_buf, _field) \
228 ((void)BUILD_BUG_ON_ZERO(MC_CMD_ ## _field ## _LEN != 1), \
229 *MCDI_PTR(_buf, _field))
230#define MCDI_STRUCT_BYTE(_buf, _field) \
231 ((void)BUILD_BUG_ON_ZERO(_field ## _LEN != 1), \
232 *MCDI_STRUCT_PTR(_buf, _field))
233#define MCDI_SET_WORD(_buf, _field, _value) do { \
234 BUILD_BUG_ON(MC_CMD_ ## _field ## _LEN != 2); \
235 BUILD_BUG_ON(MC_CMD_ ## _field ## _OFST & 1); \
236 *(__force __le16 *)MCDI_PTR(_buf, _field) = cpu_to_le16(_value);\
237 } while (0)
238#define MCDI_STRUCT_SET_WORD(_buf, _field, _value) do { \
239 BUILD_BUG_ON(_field ## _LEN != 2); \
240 BUILD_BUG_ON(_field ## _OFST & 1); \
241 *(__force __le16 *)MCDI_STRUCT_PTR(_buf, _field) = cpu_to_le16(_value);\
242 } while (0)
243#define MCDI_WORD(_buf, _field) \
244 ((u16)BUILD_BUG_ON_ZERO(MC_CMD_ ## _field ## _LEN != 2) + \
245 le16_to_cpu(*(__force const __le16 *)MCDI_PTR(_buf, _field)))
246#define MCDI_STRUCT_WORD(_buf, _field) \
247 ((void)BUILD_BUG_ON_ZERO(_field ## _LEN != 2), \
248 le16_to_cpu(*(__force const __le16 *)MCDI_STRUCT_PTR(_buf, _field)))
249/* Write a 16-bit field defined in the protocol as being big-endian. */
250#define MCDI_SET_WORD_BE(_buf, _field, _value) do { \
251 BUILD_BUG_ON(MC_CMD_ ## _field ## _LEN != 2); \
252 BUILD_BUG_ON(MC_CMD_ ## _field ## _OFST & 1); \
253 *(__force __be16 *)MCDI_PTR(_buf, _field) = (_value); \
254 } while (0)
255#define MCDI_STRUCT_SET_WORD_BE(_buf, _field, _value) do { \
256 BUILD_BUG_ON(_field ## _LEN != 2); \
257 BUILD_BUG_ON(_field ## _OFST & 1); \
258 *(__force __be16 *)MCDI_STRUCT_PTR(_buf, _field) = (_value); \
259 } while (0)
260#define MCDI_SET_DWORD(_buf, _field, _value) \
261 EFX_POPULATE_DWORD_1(*_MCDI_DWORD(_buf, _field), EFX_DWORD_0, _value)
262#define MCDI_STRUCT_SET_DWORD(_buf, _field, _value) \
263 EFX_POPULATE_DWORD_1(*_MCDI_STRUCT_DWORD(_buf, _field), EFX_DWORD_0, _value)
264#define MCDI_DWORD(_buf, _field) \
265 EFX_DWORD_FIELD(*_MCDI_DWORD(_buf, _field), EFX_DWORD_0)
266#define MCDI_STRUCT_DWORD(_buf, _field) \
267 EFX_DWORD_FIELD(*_MCDI_STRUCT_DWORD(_buf, _field), EFX_DWORD_0)
268/* Write a 32-bit field defined in the protocol as being big-endian. */
269#define MCDI_STRUCT_SET_DWORD_BE(_buf, _field, _value) do { \
270 BUILD_BUG_ON(_field ## _LEN != 4); \
271 BUILD_BUG_ON(_field ## _OFST & 3); \
272 *(__force __be32 *)MCDI_STRUCT_PTR(_buf, _field) = (_value); \
273 } while (0)
274#define MCDI_POPULATE_DWORD_1(_buf, _field, _name1, _value1) \
275 EFX_POPULATE_DWORD_1(*_MCDI_DWORD(_buf, _field), \
276 MC_CMD_ ## _name1, _value1)
277#define MCDI_POPULATE_DWORD_2(_buf, _field, _name1, _value1, \
278 _name2, _value2) \
279 EFX_POPULATE_DWORD_2(*_MCDI_DWORD(_buf, _field), \
280 MC_CMD_ ## _name1, _value1, \
281 MC_CMD_ ## _name2, _value2)
282#define MCDI_POPULATE_DWORD_3(_buf, _field, _name1, _value1, \
283 _name2, _value2, _name3, _value3) \
284 EFX_POPULATE_DWORD_3(*_MCDI_DWORD(_buf, _field), \
285 MC_CMD_ ## _name1, _value1, \
286 MC_CMD_ ## _name2, _value2, \
287 MC_CMD_ ## _name3, _value3)
288#define MCDI_POPULATE_DWORD_4(_buf, _field, _name1, _value1, \
289 _name2, _value2, _name3, _value3, \
290 _name4, _value4) \
291 EFX_POPULATE_DWORD_4(*_MCDI_DWORD(_buf, _field), \
292 MC_CMD_ ## _name1, _value1, \
293 MC_CMD_ ## _name2, _value2, \
294 MC_CMD_ ## _name3, _value3, \
295 MC_CMD_ ## _name4, _value4)
296#define MCDI_POPULATE_DWORD_5(_buf, _field, _name1, _value1, \
297 _name2, _value2, _name3, _value3, \
298 _name4, _value4, _name5, _value5) \
299 EFX_POPULATE_DWORD_5(*_MCDI_DWORD(_buf, _field), \
300 MC_CMD_ ## _name1, _value1, \
301 MC_CMD_ ## _name2, _value2, \
302 MC_CMD_ ## _name3, _value3, \
303 MC_CMD_ ## _name4, _value4, \
304 MC_CMD_ ## _name5, _value5)
305#define MCDI_POPULATE_DWORD_6(_buf, _field, _name1, _value1, \
306 _name2, _value2, _name3, _value3, \
307 _name4, _value4, _name5, _value5, \
308 _name6, _value6) \
309 EFX_POPULATE_DWORD_6(*_MCDI_DWORD(_buf, _field), \
310 MC_CMD_ ## _name1, _value1, \
311 MC_CMD_ ## _name2, _value2, \
312 MC_CMD_ ## _name3, _value3, \
313 MC_CMD_ ## _name4, _value4, \
314 MC_CMD_ ## _name5, _value5, \
315 MC_CMD_ ## _name6, _value6)
316#define MCDI_POPULATE_DWORD_7(_buf, _field, _name1, _value1, \
317 _name2, _value2, _name3, _value3, \
318 _name4, _value4, _name5, _value5, \
319 _name6, _value6, _name7, _value7) \
320 EFX_POPULATE_DWORD_7(*_MCDI_DWORD(_buf, _field), \
321 MC_CMD_ ## _name1, _value1, \
322 MC_CMD_ ## _name2, _value2, \
323 MC_CMD_ ## _name3, _value3, \
324 MC_CMD_ ## _name4, _value4, \
325 MC_CMD_ ## _name5, _value5, \
326 MC_CMD_ ## _name6, _value6, \
327 MC_CMD_ ## _name7, _value7)
328#define MCDI_SET_QWORD(_buf, _field, _value) \
329 do { \
330 EFX_POPULATE_DWORD_1(_MCDI_DWORD(_buf, _field)[0], \
331 EFX_DWORD_0, (u32)(_value)); \
332 EFX_POPULATE_DWORD_1(_MCDI_DWORD(_buf, _field)[1], \
333 EFX_DWORD_0, (u64)(_value) >> 32); \
334 } while (0)
335#define MCDI_QWORD(_buf, _field) \
336 (EFX_DWORD_FIELD(_MCDI_DWORD(_buf, _field)[0], EFX_DWORD_0) | \
337 (u64)EFX_DWORD_FIELD(_MCDI_DWORD(_buf, _field)[1], EFX_DWORD_0) << 32)
338#define MCDI_FIELD(_ptr, _type, _field) \
339 EFX_EXTRACT_DWORD( \
340 *(efx_dword_t *) \
341 _MCDI_PTR(_ptr, MC_CMD_ ## _type ## _ ## _field ## _OFST & ~3),\
342 MC_CMD_ ## _type ## _ ## _field ## _LBN & 0x1f, \
343 (MC_CMD_ ## _type ## _ ## _field ## _LBN & 0x1f) + \
344 MC_CMD_ ## _type ## _ ## _field ## _WIDTH - 1)
345
346#define _MCDI_ARRAY_PTR(_buf, _field, _index, _align) \
347 (_MCDI_PTR(_buf, _MCDI_CHECK_ALIGN(MC_CMD_ ## _field ## _OFST, _align))\
348 + (_index) * _MCDI_CHECK_ALIGN(MC_CMD_ ## _field ## _LEN, _align))
349#define MCDI_DECLARE_STRUCT_PTR(_name) \
350 efx_dword_t *_name
351#define MCDI_ARRAY_STRUCT_PTR(_buf, _field, _index) \
352 ((efx_dword_t *)_MCDI_ARRAY_PTR(_buf, _field, _index, 4))
353#define MCDI_VAR_ARRAY_LEN(_len, _field) \
354 min_t(size_t, MC_CMD_ ## _field ## _MAXNUM, \
355 ((_len) - MC_CMD_ ## _field ## _OFST) / MC_CMD_ ## _field ## _LEN)
356#define MCDI_ARRAY_WORD(_buf, _field, _index) \
357 (BUILD_BUG_ON_ZERO(MC_CMD_ ## _field ## _LEN != 2) + \
358 le16_to_cpu(*(__force const __le16 *) \
359 _MCDI_ARRAY_PTR(_buf, _field, _index, 2)))
360#define _MCDI_ARRAY_DWORD(_buf, _field, _index) \
361 (BUILD_BUG_ON_ZERO(MC_CMD_ ## _field ## _LEN != 4) + \
362 (efx_dword_t *)_MCDI_ARRAY_PTR(_buf, _field, _index, 4))
363#define MCDI_SET_ARRAY_DWORD(_buf, _field, _index, _value) \
364 EFX_SET_DWORD_FIELD(*_MCDI_ARRAY_DWORD(_buf, _field, _index), \
365 EFX_DWORD_0, _value)
366#define MCDI_ARRAY_DWORD(_buf, _field, _index) \
367 EFX_DWORD_FIELD(*_MCDI_ARRAY_DWORD(_buf, _field, _index), EFX_DWORD_0)
368#define _MCDI_ARRAY_QWORD(_buf, _field, _index) \
369 (BUILD_BUG_ON_ZERO(MC_CMD_ ## _field ## _LEN != 8) + \
370 (efx_dword_t *)_MCDI_ARRAY_PTR(_buf, _field, _index, 4))
371#define MCDI_SET_ARRAY_QWORD(_buf, _field, _index, _value) \
372 do { \
373 EFX_SET_DWORD_FIELD(_MCDI_ARRAY_QWORD(_buf, _field, _index)[0],\
374 EFX_DWORD_0, (u32)(_value)); \
375 EFX_SET_DWORD_FIELD(_MCDI_ARRAY_QWORD(_buf, _field, _index)[1],\
376 EFX_DWORD_0, (u64)(_value) >> 32); \
377 } while (0)
378#define MCDI_ARRAY_FIELD(_buf, _field1, _type, _index, _field2) \
379 MCDI_FIELD(MCDI_ARRAY_STRUCT_PTR(_buf, _field1, _index), \
380 _type ## _TYPEDEF, _field2)
381
382#define MCDI_EVENT_FIELD(_ev, _field) \
383 EFX_QWORD_FIELD(_ev, MCDI_EVENT_ ## _field)
384
385#define MCDI_CAPABILITY(field) \
386 MC_CMD_GET_CAPABILITIES_V8_OUT_ ## field ## _LBN
387
388#define MCDI_CAPABILITY_OFST(field) \
389 MC_CMD_GET_CAPABILITIES_V8_OUT_ ## field ## _OFST
390
391#define efx_has_cap(efx, field) \
392 efx->type->check_caps(efx, \
393 MCDI_CAPABILITY(field), \
394 MCDI_CAPABILITY_OFST(field))
395
396void efx_mcdi_print_fwver(struct efx_nic *efx, char *buf, size_t len);
397int efx_mcdi_get_board_cfg(struct efx_nic *efx, u8 *mac_address,
398 u16 *fw_subtype_list, u32 *capabilities);
399int efx_mcdi_log_ctrl(struct efx_nic *efx, bool evq, bool uart, u32 dest_evq);
400int efx_mcdi_nvram_types(struct efx_nic *efx, u32 *nvram_types_out);
401int efx_mcdi_nvram_info(struct efx_nic *efx, unsigned int type,
402 size_t *size_out, size_t *erase_size_out,
403 bool *protected_out);
404int efx_new_mcdi_nvram_test_all(struct efx_nic *efx);
405int efx_mcdi_nvram_metadata(struct efx_nic *efx, unsigned int type,
406 u32 *subtype, u16 version[4], char *desc,
407 size_t descsize);
408int efx_mcdi_nvram_test_all(struct efx_nic *efx);
409int efx_mcdi_handle_assertion(struct efx_nic *efx);
410int efx_mcdi_set_id_led(struct efx_nic *efx, enum efx_led_mode mode);
411int efx_mcdi_wol_filter_set_magic(struct efx_nic *efx, const u8 *mac,
412 int *id_out);
413int efx_mcdi_wol_filter_get_magic(struct efx_nic *efx, int *id_out);
414int efx_mcdi_wol_filter_remove(struct efx_nic *efx, int id);
415int efx_mcdi_wol_filter_reset(struct efx_nic *efx);
416int efx_mcdi_flush_rxqs(struct efx_nic *efx);
417void efx_mcdi_process_link_change(struct efx_nic *efx, efx_qword_t *ev);
418void efx_mcdi_mac_start_stats(struct efx_nic *efx);
419void efx_mcdi_mac_stop_stats(struct efx_nic *efx);
420void efx_mcdi_mac_pull_stats(struct efx_nic *efx);
421enum reset_type efx_mcdi_map_reset_reason(enum reset_type reason);
422int efx_mcdi_reset(struct efx_nic *efx, enum reset_type method);
423int efx_mcdi_set_workaround(struct efx_nic *efx, u32 type, bool enabled,
424 unsigned int *flags);
425int efx_mcdi_get_workarounds(struct efx_nic *efx, unsigned int *impl_out,
426 unsigned int *enabled_out);
427int efx_mcdi_get_privilege_mask(struct efx_nic *efx, u32 *mask);
428
429#ifdef CONFIG_SFC_MCDI_MON
430int efx_mcdi_mon_probe(struct efx_nic *efx);
431void efx_mcdi_mon_remove(struct efx_nic *efx);
432#else
433static inline int efx_mcdi_mon_probe(struct efx_nic *efx) { return 0; }
434static inline void efx_mcdi_mon_remove(struct efx_nic *efx) {}
435#endif
436
437#ifdef CONFIG_SFC_MTD
438int efx_mcdi_mtd_read(struct mtd_info *mtd, loff_t start, size_t len,
439 size_t *retlen, u8 *buffer);
440int efx_mcdi_mtd_erase(struct mtd_info *mtd, loff_t start, size_t len);
441int efx_mcdi_mtd_write(struct mtd_info *mtd, loff_t start, size_t len,
442 size_t *retlen, const u8 *buffer);
443int efx_mcdi_mtd_sync(struct mtd_info *mtd);
444void efx_mcdi_mtd_rename(struct efx_mtd_partition *part);
445#endif
446
447#endif /* EFX_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_PROXY_WAIT: An MCDI request has completed with a response that
21 * indicates we must wait for a proxy try again message.
22 * @MCDI_STATE_COMPLETED: An MCDI request has completed, but the owning thread
23 * has not yet consumed the result. For all other threads, equivalent to
24 * %MCDI_STATE_RUNNING.
25 */
26enum efx_mcdi_state {
27 MCDI_STATE_QUIESCENT,
28 MCDI_STATE_RUNNING_SYNC,
29 MCDI_STATE_RUNNING_ASYNC,
30 MCDI_STATE_PROXY_WAIT,
31 MCDI_STATE_COMPLETED,
32};
33
34/**
35 * enum efx_mcdi_mode - MCDI transaction mode
36 * @MCDI_MODE_POLL: poll for MCDI completion, until timeout
37 * @MCDI_MODE_EVENTS: wait for an mcdi_event. On timeout, poll once
38 * @MCDI_MODE_FAIL: we think MCDI is dead, so fail-fast all calls
39 */
40enum efx_mcdi_mode {
41 MCDI_MODE_POLL,
42 MCDI_MODE_EVENTS,
43 MCDI_MODE_FAIL,
44};
45
46/**
47 * struct efx_mcdi_iface - MCDI protocol context
48 * @efx: The associated NIC.
49 * @state: Request handling state. Waited for by @wq.
50 * @mode: Poll for mcdi completion, or wait for an mcdi_event.
51 * @wq: Wait queue for threads waiting for @state != %MCDI_STATE_RUNNING
52 * @new_epoch: Indicates start of day or start of MC reboot recovery
53 * @iface_lock: Serialises access to @seqno, @credits and response metadata
54 * @seqno: The next sequence number to use for mcdi requests.
55 * @credits: Number of spurious MCDI completion events allowed before we
56 * trigger a fatal error
57 * @resprc: Response error/success code (Linux numbering)
58 * @resp_hdr_len: Response header length
59 * @resp_data_len: Response data (SDU or error) length
60 * @async_lock: Serialises access to @async_list while event processing is
61 * enabled
62 * @async_list: Queue of asynchronous requests
63 * @async_timer: Timer for asynchronous request timeout
64 * @logging_buffer: buffer that may be used to build MCDI tracing messages
65 * @logging_enabled: whether to trace MCDI
66 * @proxy_rx_handle: Most recently received proxy authorisation handle
67 * @proxy_rx_status: Status of most recent proxy authorisation
68 * @proxy_rx_wq: Wait queue for updates to proxy_rx_handle
69 */
70struct efx_mcdi_iface {
71 struct efx_nic *efx;
72 enum efx_mcdi_state state;
73 enum efx_mcdi_mode mode;
74 wait_queue_head_t wq;
75 spinlock_t iface_lock;
76 bool new_epoch;
77 unsigned int credits;
78 unsigned int seqno;
79 int resprc;
80 int resprc_raw;
81 size_t resp_hdr_len;
82 size_t resp_data_len;
83 spinlock_t async_lock;
84 struct list_head async_list;
85 struct timer_list async_timer;
86#ifdef CONFIG_SFC_MCDI_LOGGING
87 char *logging_buffer;
88 bool logging_enabled;
89#endif
90 unsigned int proxy_rx_handle;
91 int proxy_rx_status;
92 wait_queue_head_t proxy_rx_wq;
93};
94
95struct efx_mcdi_mon {
96 struct efx_buffer dma_buf;
97 struct mutex update_lock;
98 unsigned long last_update;
99 struct device *device;
100 struct efx_mcdi_mon_attribute *attrs;
101 struct attribute_group group;
102 const struct attribute_group *groups[2];
103 unsigned int n_attrs;
104};
105
106struct efx_mcdi_mtd_partition {
107 struct efx_mtd_partition common;
108 bool updating;
109 u16 nvram_type;
110 u16 fw_subtype;
111};
112
113#define to_efx_mcdi_mtd_partition(mtd) \
114 container_of(mtd, struct efx_mcdi_mtd_partition, common.mtd)
115
116/**
117 * struct efx_mcdi_data - extra state for NICs that implement MCDI
118 * @iface: Interface/protocol state
119 * @hwmon: Hardware monitor state
120 * @fn_flags: Flags for this function, as returned by %MC_CMD_DRV_ATTACH.
121 */
122struct efx_mcdi_data {
123 struct efx_mcdi_iface iface;
124#ifdef CONFIG_SFC_MCDI_MON
125 struct efx_mcdi_mon hwmon;
126#endif
127 u32 fn_flags;
128};
129
130static inline struct efx_mcdi_iface *efx_mcdi(struct efx_nic *efx)
131{
132 EFX_WARN_ON_PARANOID(!efx->mcdi);
133 return &efx->mcdi->iface;
134}
135
136#ifdef CONFIG_SFC_MCDI_MON
137static inline struct efx_mcdi_mon *efx_mcdi_mon(struct efx_nic *efx)
138{
139 EFX_WARN_ON_PARANOID(!efx->mcdi);
140 return &efx->mcdi->hwmon;
141}
142#endif
143
144int efx_mcdi_init(struct efx_nic *efx);
145void efx_mcdi_detach(struct efx_nic *efx);
146void efx_mcdi_fini(struct efx_nic *efx);
147
148int efx_mcdi_rpc(struct efx_nic *efx, unsigned cmd, const efx_dword_t *inbuf,
149 size_t inlen, efx_dword_t *outbuf, size_t outlen,
150 size_t *outlen_actual);
151int efx_mcdi_rpc_quiet(struct efx_nic *efx, unsigned cmd,
152 const efx_dword_t *inbuf, size_t inlen,
153 efx_dword_t *outbuf, size_t outlen,
154 size_t *outlen_actual);
155
156int efx_mcdi_rpc_start(struct efx_nic *efx, unsigned cmd,
157 const efx_dword_t *inbuf, size_t inlen);
158int efx_mcdi_rpc_finish(struct efx_nic *efx, unsigned cmd, size_t inlen,
159 efx_dword_t *outbuf, size_t outlen,
160 size_t *outlen_actual);
161int efx_mcdi_rpc_finish_quiet(struct efx_nic *efx, unsigned cmd,
162 size_t inlen, efx_dword_t *outbuf,
163 size_t outlen, size_t *outlen_actual);
164
165typedef void efx_mcdi_async_completer(struct efx_nic *efx,
166 unsigned long cookie, int rc,
167 efx_dword_t *outbuf,
168 size_t outlen_actual);
169int efx_mcdi_rpc_async(struct efx_nic *efx, unsigned int cmd,
170 const efx_dword_t *inbuf, size_t inlen, size_t outlen,
171 efx_mcdi_async_completer *complete,
172 unsigned long cookie);
173int efx_mcdi_rpc_async_quiet(struct efx_nic *efx, unsigned int cmd,
174 const efx_dword_t *inbuf, size_t inlen,
175 size_t outlen,
176 efx_mcdi_async_completer *complete,
177 unsigned long cookie);
178
179void efx_mcdi_display_error(struct efx_nic *efx, unsigned cmd,
180 size_t inlen, efx_dword_t *outbuf,
181 size_t outlen, int rc);
182
183int efx_mcdi_poll_reboot(struct efx_nic *efx);
184void efx_mcdi_mode_poll(struct efx_nic *efx);
185void efx_mcdi_mode_event(struct efx_nic *efx);
186void efx_mcdi_flush_async(struct efx_nic *efx);
187
188void efx_mcdi_process_event(struct efx_channel *channel, efx_qword_t *event);
189void efx_mcdi_sensor_event(struct efx_nic *efx, efx_qword_t *ev);
190
191/* We expect that 16- and 32-bit fields in MCDI requests and responses
192 * are appropriately aligned, but 64-bit fields are only
193 * 32-bit-aligned. Also, on Siena we must copy to the MC shared
194 * memory strictly 32 bits at a time, so add any necessary padding.
195 */
196#define _MCDI_DECLARE_BUF(_name, _len) \
197 efx_dword_t _name[DIV_ROUND_UP(_len, 4)]
198#define MCDI_DECLARE_BUF(_name, _len) \
199 _MCDI_DECLARE_BUF(_name, _len) = {{{0}}}
200#define MCDI_DECLARE_BUF_ERR(_name) \
201 MCDI_DECLARE_BUF(_name, 8)
202#define _MCDI_PTR(_buf, _offset) \
203 ((u8 *)(_buf) + (_offset))
204#define MCDI_PTR(_buf, _field) \
205 _MCDI_PTR(_buf, MC_CMD_ ## _field ## _OFST)
206#define _MCDI_CHECK_ALIGN(_ofst, _align) \
207 ((_ofst) + BUILD_BUG_ON_ZERO((_ofst) & (_align - 1)))
208#define _MCDI_DWORD(_buf, _field) \
209 ((_buf) + (_MCDI_CHECK_ALIGN(MC_CMD_ ## _field ## _OFST, 4) >> 2))
210
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_DWORD(_buf, _field) \
220 EFX_DWORD_FIELD(*_MCDI_DWORD(_buf, _field), EFX_DWORD_0)
221#define MCDI_POPULATE_DWORD_1(_buf, _field, _name1, _value1) \
222 EFX_POPULATE_DWORD_1(*_MCDI_DWORD(_buf, _field), \
223 MC_CMD_ ## _name1, _value1)
224#define MCDI_POPULATE_DWORD_2(_buf, _field, _name1, _value1, \
225 _name2, _value2) \
226 EFX_POPULATE_DWORD_2(*_MCDI_DWORD(_buf, _field), \
227 MC_CMD_ ## _name1, _value1, \
228 MC_CMD_ ## _name2, _value2)
229#define MCDI_POPULATE_DWORD_3(_buf, _field, _name1, _value1, \
230 _name2, _value2, _name3, _value3) \
231 EFX_POPULATE_DWORD_3(*_MCDI_DWORD(_buf, _field), \
232 MC_CMD_ ## _name1, _value1, \
233 MC_CMD_ ## _name2, _value2, \
234 MC_CMD_ ## _name3, _value3)
235#define MCDI_POPULATE_DWORD_4(_buf, _field, _name1, _value1, \
236 _name2, _value2, _name3, _value3, \
237 _name4, _value4) \
238 EFX_POPULATE_DWORD_4(*_MCDI_DWORD(_buf, _field), \
239 MC_CMD_ ## _name1, _value1, \
240 MC_CMD_ ## _name2, _value2, \
241 MC_CMD_ ## _name3, _value3, \
242 MC_CMD_ ## _name4, _value4)
243#define MCDI_POPULATE_DWORD_5(_buf, _field, _name1, _value1, \
244 _name2, _value2, _name3, _value3, \
245 _name4, _value4, _name5, _value5) \
246 EFX_POPULATE_DWORD_5(*_MCDI_DWORD(_buf, _field), \
247 MC_CMD_ ## _name1, _value1, \
248 MC_CMD_ ## _name2, _value2, \
249 MC_CMD_ ## _name3, _value3, \
250 MC_CMD_ ## _name4, _value4, \
251 MC_CMD_ ## _name5, _value5)
252#define MCDI_POPULATE_DWORD_6(_buf, _field, _name1, _value1, \
253 _name2, _value2, _name3, _value3, \
254 _name4, _value4, _name5, _value5, \
255 _name6, _value6) \
256 EFX_POPULATE_DWORD_6(*_MCDI_DWORD(_buf, _field), \
257 MC_CMD_ ## _name1, _value1, \
258 MC_CMD_ ## _name2, _value2, \
259 MC_CMD_ ## _name3, _value3, \
260 MC_CMD_ ## _name4, _value4, \
261 MC_CMD_ ## _name5, _value5, \
262 MC_CMD_ ## _name6, _value6)
263#define MCDI_POPULATE_DWORD_7(_buf, _field, _name1, _value1, \
264 _name2, _value2, _name3, _value3, \
265 _name4, _value4, _name5, _value5, \
266 _name6, _value6, _name7, _value7) \
267 EFX_POPULATE_DWORD_7(*_MCDI_DWORD(_buf, _field), \
268 MC_CMD_ ## _name1, _value1, \
269 MC_CMD_ ## _name2, _value2, \
270 MC_CMD_ ## _name3, _value3, \
271 MC_CMD_ ## _name4, _value4, \
272 MC_CMD_ ## _name5, _value5, \
273 MC_CMD_ ## _name6, _value6, \
274 MC_CMD_ ## _name7, _value7)
275#define MCDI_SET_QWORD(_buf, _field, _value) \
276 do { \
277 EFX_POPULATE_DWORD_1(_MCDI_DWORD(_buf, _field)[0], \
278 EFX_DWORD_0, (u32)(_value)); \
279 EFX_POPULATE_DWORD_1(_MCDI_DWORD(_buf, _field)[1], \
280 EFX_DWORD_0, (u64)(_value) >> 32); \
281 } while (0)
282#define MCDI_QWORD(_buf, _field) \
283 (EFX_DWORD_FIELD(_MCDI_DWORD(_buf, _field)[0], EFX_DWORD_0) | \
284 (u64)EFX_DWORD_FIELD(_MCDI_DWORD(_buf, _field)[1], EFX_DWORD_0) << 32)
285#define MCDI_FIELD(_ptr, _type, _field) \
286 EFX_EXTRACT_DWORD( \
287 *(efx_dword_t *) \
288 _MCDI_PTR(_ptr, MC_CMD_ ## _type ## _ ## _field ## _OFST & ~3),\
289 MC_CMD_ ## _type ## _ ## _field ## _LBN & 0x1f, \
290 (MC_CMD_ ## _type ## _ ## _field ## _LBN & 0x1f) + \
291 MC_CMD_ ## _type ## _ ## _field ## _WIDTH - 1)
292
293#define _MCDI_ARRAY_PTR(_buf, _field, _index, _align) \
294 (_MCDI_PTR(_buf, _MCDI_CHECK_ALIGN(MC_CMD_ ## _field ## _OFST, _align))\
295 + (_index) * _MCDI_CHECK_ALIGN(MC_CMD_ ## _field ## _LEN, _align))
296#define MCDI_DECLARE_STRUCT_PTR(_name) \
297 efx_dword_t *_name
298#define MCDI_ARRAY_STRUCT_PTR(_buf, _field, _index) \
299 ((efx_dword_t *)_MCDI_ARRAY_PTR(_buf, _field, _index, 4))
300#define MCDI_VAR_ARRAY_LEN(_len, _field) \
301 min_t(size_t, MC_CMD_ ## _field ## _MAXNUM, \
302 ((_len) - MC_CMD_ ## _field ## _OFST) / MC_CMD_ ## _field ## _LEN)
303#define MCDI_ARRAY_WORD(_buf, _field, _index) \
304 (BUILD_BUG_ON_ZERO(MC_CMD_ ## _field ## _LEN != 2) + \
305 le16_to_cpu(*(__force const __le16 *) \
306 _MCDI_ARRAY_PTR(_buf, _field, _index, 2)))
307#define _MCDI_ARRAY_DWORD(_buf, _field, _index) \
308 (BUILD_BUG_ON_ZERO(MC_CMD_ ## _field ## _LEN != 4) + \
309 (efx_dword_t *)_MCDI_ARRAY_PTR(_buf, _field, _index, 4))
310#define MCDI_SET_ARRAY_DWORD(_buf, _field, _index, _value) \
311 EFX_SET_DWORD_FIELD(*_MCDI_ARRAY_DWORD(_buf, _field, _index), \
312 EFX_DWORD_0, _value)
313#define MCDI_ARRAY_DWORD(_buf, _field, _index) \
314 EFX_DWORD_FIELD(*_MCDI_ARRAY_DWORD(_buf, _field, _index), EFX_DWORD_0)
315#define _MCDI_ARRAY_QWORD(_buf, _field, _index) \
316 (BUILD_BUG_ON_ZERO(MC_CMD_ ## _field ## _LEN != 8) + \
317 (efx_dword_t *)_MCDI_ARRAY_PTR(_buf, _field, _index, 4))
318#define MCDI_SET_ARRAY_QWORD(_buf, _field, _index, _value) \
319 do { \
320 EFX_SET_DWORD_FIELD(_MCDI_ARRAY_QWORD(_buf, _field, _index)[0],\
321 EFX_DWORD_0, (u32)(_value)); \
322 EFX_SET_DWORD_FIELD(_MCDI_ARRAY_QWORD(_buf, _field, _index)[1],\
323 EFX_DWORD_0, (u64)(_value) >> 32); \
324 } while (0)
325#define MCDI_ARRAY_FIELD(_buf, _field1, _type, _index, _field2) \
326 MCDI_FIELD(MCDI_ARRAY_STRUCT_PTR(_buf, _field1, _index), \
327 _type ## _TYPEDEF, _field2)
328
329#define MCDI_EVENT_FIELD(_ev, _field) \
330 EFX_QWORD_FIELD(_ev, MCDI_EVENT_ ## _field)
331
332void efx_mcdi_print_fwver(struct efx_nic *efx, char *buf, size_t len);
333int efx_mcdi_get_board_cfg(struct efx_nic *efx, u8 *mac_address,
334 u16 *fw_subtype_list, u32 *capabilities);
335int efx_mcdi_log_ctrl(struct efx_nic *efx, bool evq, bool uart, u32 dest_evq);
336int efx_mcdi_nvram_types(struct efx_nic *efx, u32 *nvram_types_out);
337int efx_mcdi_nvram_info(struct efx_nic *efx, unsigned int type,
338 size_t *size_out, size_t *erase_size_out,
339 bool *protected_out);
340int efx_mcdi_nvram_test_all(struct efx_nic *efx);
341int efx_mcdi_handle_assertion(struct efx_nic *efx);
342void efx_mcdi_set_id_led(struct efx_nic *efx, enum efx_led_mode mode);
343int efx_mcdi_wol_filter_set_magic(struct efx_nic *efx, const u8 *mac,
344 int *id_out);
345int efx_mcdi_wol_filter_get_magic(struct efx_nic *efx, int *id_out);
346int efx_mcdi_wol_filter_remove(struct efx_nic *efx, int id);
347int efx_mcdi_wol_filter_reset(struct efx_nic *efx);
348int efx_mcdi_flush_rxqs(struct efx_nic *efx);
349int efx_mcdi_port_probe(struct efx_nic *efx);
350void efx_mcdi_port_remove(struct efx_nic *efx);
351int efx_mcdi_port_reconfigure(struct efx_nic *efx);
352int efx_mcdi_port_get_number(struct efx_nic *efx);
353u32 efx_mcdi_phy_get_caps(struct efx_nic *efx);
354void efx_mcdi_process_link_change(struct efx_nic *efx, efx_qword_t *ev);
355int efx_mcdi_set_mac(struct efx_nic *efx);
356#define EFX_MC_STATS_GENERATION_INVALID ((__force __le64)(-1))
357void efx_mcdi_mac_start_stats(struct efx_nic *efx);
358void efx_mcdi_mac_stop_stats(struct efx_nic *efx);
359void efx_mcdi_mac_pull_stats(struct efx_nic *efx);
360bool efx_mcdi_mac_check_fault(struct efx_nic *efx);
361enum reset_type efx_mcdi_map_reset_reason(enum reset_type reason);
362int efx_mcdi_reset(struct efx_nic *efx, enum reset_type method);
363int efx_mcdi_set_workaround(struct efx_nic *efx, u32 type, bool enabled,
364 unsigned int *flags);
365int efx_mcdi_get_workarounds(struct efx_nic *efx, unsigned int *impl_out,
366 unsigned int *enabled_out);
367
368#ifdef CONFIG_SFC_MCDI_MON
369int efx_mcdi_mon_probe(struct efx_nic *efx);
370void efx_mcdi_mon_remove(struct efx_nic *efx);
371#else
372static inline int efx_mcdi_mon_probe(struct efx_nic *efx) { return 0; }
373static inline void efx_mcdi_mon_remove(struct efx_nic *efx) {}
374#endif
375
376#ifdef CONFIG_SFC_MTD
377int efx_mcdi_mtd_read(struct mtd_info *mtd, loff_t start, size_t len,
378 size_t *retlen, u8 *buffer);
379int efx_mcdi_mtd_erase(struct mtd_info *mtd, loff_t start, size_t len);
380int efx_mcdi_mtd_write(struct mtd_info *mtd, loff_t start, size_t len,
381 size_t *retlen, const u8 *buffer);
382int efx_mcdi_mtd_sync(struct mtd_info *mtd);
383void efx_mcdi_mtd_rename(struct efx_mtd_partition *part);
384#endif
385
386#endif /* EFX_MCDI_H */