1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (c) 2018-2019, Vladimir Oltean <olteanv@gmail.com>
3 */
4 #include "sja1105.h"
5
6 /* In the dynamic configuration interface, the switch exposes a register-like
7 * view of some of the static configuration tables.
8 * Many times the field organization of the dynamic tables is abbreviated (not
9 * all fields are dynamically reconfigurable) and different from the static
10 * ones, but the key reason for having it is that we can spare a switch reset
11 * for settings that can be changed dynamically.
12 *
13 * This file creates a per-switch-family abstraction called
14 * struct sja1105_dynamic_table_ops and two operations that work with it:
15 * - sja1105_dynamic_config_write
16 * - sja1105_dynamic_config_read
17 *
18 * Compared to the struct sja1105_table_ops from sja1105_static_config.c,
19 * the dynamic accessors work with a compound buffer:
20 *
21 * packed_buf
22 *
23 * |
24 * V
25 * +-----------------------------------------+------------------+
26 * | ENTRY BUFFER | COMMAND BUFFER |
27 * +-----------------------------------------+------------------+
28 *
29 * <----------------------- packed_size ------------------------>
30 *
31 * The ENTRY BUFFER may or may not have the same layout, or size, as its static
32 * configuration table entry counterpart. When it does, the same packing
33 * function is reused (bar exceptional cases - see
34 * sja1105pqrs_dyn_l2_lookup_entry_packing).
35 *
36 * The reason for the COMMAND BUFFER being at the end is to be able to send
37 * a dynamic write command through a single SPI burst. By the time the switch
38 * reacts to the command, the ENTRY BUFFER is already populated with the data
39 * sent by the core.
40 *
41 * The COMMAND BUFFER is always SJA1105_SIZE_DYN_CMD bytes (one 32-bit word) in
42 * size.
43 *
44 * Sometimes the ENTRY BUFFER does not really exist (when the number of fields
45 * that can be reconfigured is small), then the switch repurposes some of the
46 * unused 32 bits of the COMMAND BUFFER to hold ENTRY data.
47 *
48 * The key members of struct sja1105_dynamic_table_ops are:
49 * - .entry_packing: A function that deals with packing an ENTRY structure
50 * into an SPI buffer, or retrieving an ENTRY structure
51 * from one.
52 * The @packed_buf pointer it's given does always point to
53 * the ENTRY portion of the buffer.
54 * - .cmd_packing: A function that deals with packing/unpacking the COMMAND
55 * structure to/from the SPI buffer.
56 * It is given the same @packed_buf pointer as .entry_packing,
57 * so most of the time, the @packed_buf points *behind* the
58 * COMMAND offset inside the buffer.
59 * To access the COMMAND portion of the buffer, the function
60 * knows its correct offset.
61 * Giving both functions the same pointer is handy because in
62 * extreme cases (see sja1105pqrs_dyn_l2_lookup_entry_packing)
63 * the .entry_packing is able to jump to the COMMAND portion,
64 * or vice-versa (sja1105pqrs_l2_lookup_cmd_packing).
65 * - .access: A bitmap of:
66 * OP_READ: Set if the hardware manual marks the ENTRY portion of the
67 * dynamic configuration table buffer as R (readable) after
68 * an SPI read command (the switch will populate the buffer).
69 * OP_WRITE: Set if the manual marks the ENTRY portion of the dynamic
70 * table buffer as W (writable) after an SPI write command
71 * (the switch will read the fields provided in the buffer).
72 * OP_DEL: Set if the manual says the VALIDENT bit is supported in the
73 * COMMAND portion of this dynamic config buffer (i.e. the
74 * specified entry can be invalidated through a SPI write
75 * command).
76 * OP_SEARCH: Set if the manual says that the index of an entry can
77 * be retrieved in the COMMAND portion of the buffer based
78 * on its ENTRY portion, as a result of a SPI write command.
79 * Only the TCAM-based FDB table on SJA1105 P/Q/R/S supports
80 * this.
81 * OP_VALID_ANYWAY: Reading some tables through the dynamic config
82 * interface is possible even if the VALIDENT bit is not
83 * set in the writeback. So don't error out in that case.
84 * - .max_entry_count: The number of entries, counting from zero, that can be
85 * reconfigured through the dynamic interface. If a static
86 * table can be reconfigured at all dynamically, this
87 * number always matches the maximum number of supported
88 * static entries.
89 * - .packed_size: The length in bytes of the compound ENTRY + COMMAND BUFFER.
90 * Note that sometimes the compound buffer may contain holes in
91 * it (see sja1105_vlan_lookup_cmd_packing). The @packed_buf is
92 * contiguous however, so @packed_size includes any unused
93 * bytes.
94 * - .addr: The base SPI address at which the buffer must be written to the
95 * switch's memory. When looking at the hardware manual, this must
96 * always match the lowest documented address for the ENTRY, and not
97 * that of the COMMAND, since the other 32-bit words will follow along
98 * at the correct addresses.
99 */
100
101 #define SJA1105_SIZE_DYN_CMD 4
102
103 #define SJA1105ET_SIZE_VL_LOOKUP_DYN_CMD \
104 SJA1105_SIZE_DYN_CMD
105
106 #define SJA1105PQRS_SIZE_VL_LOOKUP_DYN_CMD \
107 (SJA1105_SIZE_DYN_CMD + SJA1105_SIZE_VL_LOOKUP_ENTRY)
108
109 #define SJA1110_SIZE_VL_POLICING_DYN_CMD \
110 (SJA1105_SIZE_DYN_CMD + SJA1105_SIZE_VL_POLICING_ENTRY)
111
112 #define SJA1105ET_SIZE_MAC_CONFIG_DYN_ENTRY \
113 SJA1105_SIZE_DYN_CMD
114
115 #define SJA1105ET_SIZE_L2_LOOKUP_DYN_CMD \
116 (SJA1105_SIZE_DYN_CMD + SJA1105ET_SIZE_L2_LOOKUP_ENTRY)
117
118 #define SJA1105PQRS_SIZE_L2_LOOKUP_DYN_CMD \
119 (SJA1105_SIZE_DYN_CMD + SJA1105PQRS_SIZE_L2_LOOKUP_ENTRY)
120
121 #define SJA1110_SIZE_L2_LOOKUP_DYN_CMD \
122 (SJA1105_SIZE_DYN_CMD + SJA1110_SIZE_L2_LOOKUP_ENTRY)
123
124 #define SJA1105_SIZE_VLAN_LOOKUP_DYN_CMD \
125 (SJA1105_SIZE_DYN_CMD + 4 + SJA1105_SIZE_VLAN_LOOKUP_ENTRY)
126
127 #define SJA1110_SIZE_VLAN_LOOKUP_DYN_CMD \
128 (SJA1105_SIZE_DYN_CMD + SJA1110_SIZE_VLAN_LOOKUP_ENTRY)
129
130 #define SJA1105_SIZE_L2_FORWARDING_DYN_CMD \
131 (SJA1105_SIZE_DYN_CMD + SJA1105_SIZE_L2_FORWARDING_ENTRY)
132
133 #define SJA1105ET_SIZE_MAC_CONFIG_DYN_CMD \
134 (SJA1105_SIZE_DYN_CMD + SJA1105ET_SIZE_MAC_CONFIG_DYN_ENTRY)
135
136 #define SJA1105PQRS_SIZE_MAC_CONFIG_DYN_CMD \
137 (SJA1105_SIZE_DYN_CMD + SJA1105PQRS_SIZE_MAC_CONFIG_ENTRY)
138
139 #define SJA1105ET_SIZE_L2_LOOKUP_PARAMS_DYN_CMD \
140 SJA1105_SIZE_DYN_CMD
141
142 #define SJA1105PQRS_SIZE_L2_LOOKUP_PARAMS_DYN_CMD \
143 (SJA1105_SIZE_DYN_CMD + SJA1105PQRS_SIZE_L2_LOOKUP_PARAMS_ENTRY)
144
145 #define SJA1110_SIZE_L2_LOOKUP_PARAMS_DYN_CMD \
146 (SJA1105_SIZE_DYN_CMD + SJA1110_SIZE_L2_LOOKUP_PARAMS_ENTRY)
147
148 #define SJA1105ET_SIZE_GENERAL_PARAMS_DYN_CMD \
149 SJA1105_SIZE_DYN_CMD
150
151 #define SJA1105PQRS_SIZE_GENERAL_PARAMS_DYN_CMD \
152 (SJA1105_SIZE_DYN_CMD + SJA1105PQRS_SIZE_GENERAL_PARAMS_ENTRY)
153
154 #define SJA1110_SIZE_GENERAL_PARAMS_DYN_CMD \
155 (SJA1105_SIZE_DYN_CMD + SJA1110_SIZE_GENERAL_PARAMS_ENTRY)
156
157 #define SJA1105PQRS_SIZE_AVB_PARAMS_DYN_CMD \
158 (SJA1105_SIZE_DYN_CMD + SJA1105PQRS_SIZE_AVB_PARAMS_ENTRY)
159
160 #define SJA1105_SIZE_RETAGGING_DYN_CMD \
161 (SJA1105_SIZE_DYN_CMD + SJA1105_SIZE_RETAGGING_ENTRY)
162
163 #define SJA1105ET_SIZE_CBS_DYN_CMD \
164 (SJA1105_SIZE_DYN_CMD + SJA1105ET_SIZE_CBS_ENTRY)
165
166 #define SJA1105PQRS_SIZE_CBS_DYN_CMD \
167 (SJA1105_SIZE_DYN_CMD + SJA1105PQRS_SIZE_CBS_ENTRY)
168
169 #define SJA1110_SIZE_XMII_PARAMS_DYN_CMD \
170 SJA1110_SIZE_XMII_PARAMS_ENTRY
171
172 #define SJA1110_SIZE_L2_POLICING_DYN_CMD \
173 (SJA1105_SIZE_DYN_CMD + SJA1105_SIZE_L2_POLICING_ENTRY)
174
175 #define SJA1110_SIZE_L2_FORWARDING_PARAMS_DYN_CMD \
176 SJA1105_SIZE_L2_FORWARDING_PARAMS_ENTRY
177
178 #define SJA1105_MAX_DYN_CMD_SIZE \
179 SJA1110_SIZE_GENERAL_PARAMS_DYN_CMD
180
181 struct sja1105_dyn_cmd {
182 bool search;
183 u64 valid;
184 u64 rdwrset;
185 u64 errors;
186 u64 valident;
187 u64 index;
188 };
189
190 enum sja1105_hostcmd {
191 SJA1105_HOSTCMD_SEARCH = 1,
192 SJA1105_HOSTCMD_READ = 2,
193 SJA1105_HOSTCMD_WRITE = 3,
194 SJA1105_HOSTCMD_INVALIDATE = 4,
195 };
196
197 /* Command and entry overlap */
198 static void
sja1105et_vl_lookup_cmd_packing(void * buf,struct sja1105_dyn_cmd * cmd,enum packing_op op)199 sja1105et_vl_lookup_cmd_packing(void *buf, struct sja1105_dyn_cmd *cmd,
200 enum packing_op op)
201 {
202 const int size = SJA1105_SIZE_DYN_CMD;
203
204 sja1105_packing(buf, &cmd->valid, 31, 31, size, op);
205 sja1105_packing(buf, &cmd->errors, 30, 30, size, op);
206 sja1105_packing(buf, &cmd->rdwrset, 29, 29, size, op);
207 sja1105_packing(buf, &cmd->index, 9, 0, size, op);
208 }
209
210 /* Command and entry are separate */
211 static void
sja1105pqrs_vl_lookup_cmd_packing(void * buf,struct sja1105_dyn_cmd * cmd,enum packing_op op)212 sja1105pqrs_vl_lookup_cmd_packing(void *buf, struct sja1105_dyn_cmd *cmd,
213 enum packing_op op)
214 {
215 u8 *p = buf + SJA1105_SIZE_VL_LOOKUP_ENTRY;
216 const int size = SJA1105_SIZE_DYN_CMD;
217
218 sja1105_packing(p, &cmd->valid, 31, 31, size, op);
219 sja1105_packing(p, &cmd->errors, 30, 30, size, op);
220 sja1105_packing(p, &cmd->rdwrset, 29, 29, size, op);
221 sja1105_packing(p, &cmd->index, 9, 0, size, op);
222 }
223
224 static void
sja1110_vl_lookup_cmd_packing(void * buf,struct sja1105_dyn_cmd * cmd,enum packing_op op)225 sja1110_vl_lookup_cmd_packing(void *buf, struct sja1105_dyn_cmd *cmd,
226 enum packing_op op)
227 {
228 u8 *p = buf + SJA1105PQRS_SIZE_L2_LOOKUP_ENTRY;
229 const int size = SJA1105_SIZE_DYN_CMD;
230
231 sja1105_packing(p, &cmd->valid, 31, 31, size, op);
232 sja1105_packing(p, &cmd->rdwrset, 30, 30, size, op);
233 sja1105_packing(p, &cmd->errors, 29, 29, size, op);
234 sja1105_packing(p, &cmd->index, 11, 0, size, op);
235 }
236
sja1105et_vl_lookup_entry_packing(void * buf,void * entry_ptr,enum packing_op op)237 static size_t sja1105et_vl_lookup_entry_packing(void *buf, void *entry_ptr,
238 enum packing_op op)
239 {
240 struct sja1105_vl_lookup_entry *entry = entry_ptr;
241 const int size = SJA1105ET_SIZE_VL_LOOKUP_DYN_CMD;
242
243 sja1105_packing(buf, &entry->egrmirr, 21, 17, size, op);
244 sja1105_packing(buf, &entry->ingrmirr, 16, 16, size, op);
245 return size;
246 }
247
248 static void
sja1110_vl_policing_cmd_packing(void * buf,struct sja1105_dyn_cmd * cmd,enum packing_op op)249 sja1110_vl_policing_cmd_packing(void *buf, struct sja1105_dyn_cmd *cmd,
250 enum packing_op op)
251 {
252 u8 *p = buf + SJA1105_SIZE_VL_LOOKUP_ENTRY;
253 const int size = SJA1105_SIZE_DYN_CMD;
254
255 sja1105_packing(p, &cmd->valid, 31, 31, size, op);
256 sja1105_packing(p, &cmd->rdwrset, 30, 30, size, op);
257 sja1105_packing(p, &cmd->index, 11, 0, size, op);
258 }
259
260 static void
sja1105pqrs_common_l2_lookup_cmd_packing(void * buf,struct sja1105_dyn_cmd * cmd,enum packing_op op,int entry_size)261 sja1105pqrs_common_l2_lookup_cmd_packing(void *buf, struct sja1105_dyn_cmd *cmd,
262 enum packing_op op, int entry_size)
263 {
264 const int size = SJA1105_SIZE_DYN_CMD;
265 u8 *p = buf + entry_size;
266 u64 hostcmd;
267
268 sja1105_packing(p, &cmd->valid, 31, 31, size, op);
269 sja1105_packing(p, &cmd->rdwrset, 30, 30, size, op);
270 sja1105_packing(p, &cmd->errors, 29, 29, size, op);
271 sja1105_packing(p, &cmd->valident, 27, 27, size, op);
272
273 /* VALIDENT is supposed to indicate "keep or not", but in SJA1105 E/T,
274 * using it to delete a management route was unsupported. UM10944
275 * said about it:
276 *
277 * In case of a write access with the MGMTROUTE flag set,
278 * the flag will be ignored. It will always be found cleared
279 * for read accesses with the MGMTROUTE flag set.
280 *
281 * SJA1105 P/Q/R/S keeps the same behavior w.r.t. VALIDENT, but there
282 * is now another flag called HOSTCMD which does more stuff (quoting
283 * from UM11040):
284 *
285 * A write request is accepted only when HOSTCMD is set to write host
286 * or invalid. A read request is accepted only when HOSTCMD is set to
287 * search host or read host.
288 *
289 * So it is possible to translate a RDWRSET/VALIDENT combination into
290 * HOSTCMD so that we keep the dynamic command API in place, and
291 * at the same time achieve compatibility with the management route
292 * command structure.
293 */
294 if (cmd->rdwrset == SPI_READ) {
295 if (cmd->search)
296 hostcmd = SJA1105_HOSTCMD_SEARCH;
297 else
298 hostcmd = SJA1105_HOSTCMD_READ;
299 } else {
300 /* SPI_WRITE */
301 if (cmd->valident)
302 hostcmd = SJA1105_HOSTCMD_WRITE;
303 else
304 hostcmd = SJA1105_HOSTCMD_INVALIDATE;
305 }
306 sja1105_packing(p, &hostcmd, 25, 23, size, op);
307 }
308
309 static void
sja1105pqrs_l2_lookup_cmd_packing(void * buf,struct sja1105_dyn_cmd * cmd,enum packing_op op)310 sja1105pqrs_l2_lookup_cmd_packing(void *buf, struct sja1105_dyn_cmd *cmd,
311 enum packing_op op)
312 {
313 int entry_size = SJA1105PQRS_SIZE_L2_LOOKUP_ENTRY;
314
315 sja1105pqrs_common_l2_lookup_cmd_packing(buf, cmd, op, entry_size);
316
317 /* Hack - The hardware takes the 'index' field within
318 * struct sja1105_l2_lookup_entry as the index on which this command
319 * will operate. However it will ignore everything else, so 'index'
320 * is logically part of command but physically part of entry.
321 * Populate the 'index' entry field from within the command callback,
322 * such that our API doesn't need to ask for a full-blown entry
323 * structure when e.g. a delete is requested.
324 */
325 sja1105_packing(buf, &cmd->index, 15, 6, entry_size, op);
326 }
327
328 static void
sja1110_l2_lookup_cmd_packing(void * buf,struct sja1105_dyn_cmd * cmd,enum packing_op op)329 sja1110_l2_lookup_cmd_packing(void *buf, struct sja1105_dyn_cmd *cmd,
330 enum packing_op op)
331 {
332 int entry_size = SJA1110_SIZE_L2_LOOKUP_ENTRY;
333
334 sja1105pqrs_common_l2_lookup_cmd_packing(buf, cmd, op, entry_size);
335
336 sja1105_packing(buf, &cmd->index, 10, 1, entry_size, op);
337 }
338
339 /* The switch is so retarded that it makes our command/entry abstraction
340 * crumble apart.
341 *
342 * On P/Q/R/S, the switch tries to say whether a FDB entry
343 * is statically programmed or dynamically learned via a flag called LOCKEDS.
344 * The hardware manual says about this fiels:
345 *
346 * On write will specify the format of ENTRY.
347 * On read the flag will be found cleared at times the VALID flag is found
348 * set. The flag will also be found cleared in response to a read having the
349 * MGMTROUTE flag set. In response to a read with the MGMTROUTE flag
350 * cleared, the flag be set if the most recent access operated on an entry
351 * that was either loaded by configuration or through dynamic reconfiguration
352 * (as opposed to automatically learned entries).
353 *
354 * The trouble with this flag is that it's part of the *command* to access the
355 * dynamic interface, and not part of the *entry* retrieved from it.
356 * Otherwise said, for a sja1105_dynamic_config_read, LOCKEDS is supposed to be
357 * an output from the switch into the command buffer, and for a
358 * sja1105_dynamic_config_write, the switch treats LOCKEDS as an input
359 * (hence we can write either static, or automatically learned entries, from
360 * the core).
361 * But the manual contradicts itself in the last phrase where it says that on
362 * read, LOCKEDS will be set to 1 for all FDB entries written through the
363 * dynamic interface (therefore, the value of LOCKEDS from the
364 * sja1105_dynamic_config_write is not really used for anything, it'll store a
365 * 1 anyway).
366 * This means you can't really write a FDB entry with LOCKEDS=0 (automatically
367 * learned) into the switch, which kind of makes sense.
368 * As for reading through the dynamic interface, it doesn't make too much sense
369 * to put LOCKEDS into the command, since the switch will inevitably have to
370 * ignore it (otherwise a command would be like "read the FDB entry 123, but
371 * only if it's dynamically learned" <- well how am I supposed to know?) and
372 * just use it as an output buffer for its findings. But guess what... that's
373 * what the entry buffer is for!
374 * Unfortunately, what really breaks this abstraction is the fact that it
375 * wasn't designed having the fact in mind that the switch can output
376 * entry-related data as writeback through the command buffer.
377 * However, whether a FDB entry is statically or dynamically learned *is* part
378 * of the entry and not the command data, no matter what the switch thinks.
379 * In order to do that, we'll need to wrap around the
380 * sja1105pqrs_l2_lookup_entry_packing from sja1105_static_config.c, and take
381 * a peek outside of the caller-supplied @buf (the entry buffer), to reach the
382 * command buffer.
383 */
384 static size_t
sja1105pqrs_dyn_l2_lookup_entry_packing(void * buf,void * entry_ptr,enum packing_op op)385 sja1105pqrs_dyn_l2_lookup_entry_packing(void *buf, void *entry_ptr,
386 enum packing_op op)
387 {
388 struct sja1105_l2_lookup_entry *entry = entry_ptr;
389 u8 *cmd = buf + SJA1105PQRS_SIZE_L2_LOOKUP_ENTRY;
390 const int size = SJA1105_SIZE_DYN_CMD;
391
392 sja1105_packing(cmd, &entry->lockeds, 28, 28, size, op);
393
394 return sja1105pqrs_l2_lookup_entry_packing(buf, entry_ptr, op);
395 }
396
sja1110_dyn_l2_lookup_entry_packing(void * buf,void * entry_ptr,enum packing_op op)397 static size_t sja1110_dyn_l2_lookup_entry_packing(void *buf, void *entry_ptr,
398 enum packing_op op)
399 {
400 struct sja1105_l2_lookup_entry *entry = entry_ptr;
401 u8 *cmd = buf + SJA1110_SIZE_L2_LOOKUP_ENTRY;
402 const int size = SJA1105_SIZE_DYN_CMD;
403
404 sja1105_packing(cmd, &entry->lockeds, 28, 28, size, op);
405
406 return sja1110_l2_lookup_entry_packing(buf, entry_ptr, op);
407 }
408
409 static void
sja1105et_l2_lookup_cmd_packing(void * buf,struct sja1105_dyn_cmd * cmd,enum packing_op op)410 sja1105et_l2_lookup_cmd_packing(void *buf, struct sja1105_dyn_cmd *cmd,
411 enum packing_op op)
412 {
413 u8 *p = buf + SJA1105ET_SIZE_L2_LOOKUP_ENTRY;
414 const int size = SJA1105_SIZE_DYN_CMD;
415
416 sja1105_packing(p, &cmd->valid, 31, 31, size, op);
417 sja1105_packing(p, &cmd->rdwrset, 30, 30, size, op);
418 sja1105_packing(p, &cmd->errors, 29, 29, size, op);
419 sja1105_packing(p, &cmd->valident, 27, 27, size, op);
420 /* Hack - see comments above. */
421 sja1105_packing(buf, &cmd->index, 29, 20,
422 SJA1105ET_SIZE_L2_LOOKUP_ENTRY, op);
423 }
424
sja1105et_dyn_l2_lookup_entry_packing(void * buf,void * entry_ptr,enum packing_op op)425 static size_t sja1105et_dyn_l2_lookup_entry_packing(void *buf, void *entry_ptr,
426 enum packing_op op)
427 {
428 struct sja1105_l2_lookup_entry *entry = entry_ptr;
429 u8 *cmd = buf + SJA1105ET_SIZE_L2_LOOKUP_ENTRY;
430 const int size = SJA1105_SIZE_DYN_CMD;
431
432 sja1105_packing(cmd, &entry->lockeds, 28, 28, size, op);
433
434 return sja1105et_l2_lookup_entry_packing(buf, entry_ptr, op);
435 }
436
437 static void
sja1105et_mgmt_route_cmd_packing(void * buf,struct sja1105_dyn_cmd * cmd,enum packing_op op)438 sja1105et_mgmt_route_cmd_packing(void *buf, struct sja1105_dyn_cmd *cmd,
439 enum packing_op op)
440 {
441 u8 *p = buf + SJA1105ET_SIZE_L2_LOOKUP_ENTRY;
442 u64 mgmtroute = 1;
443
444 sja1105et_l2_lookup_cmd_packing(buf, cmd, op);
445 if (op == PACK)
446 sja1105_pack(p, &mgmtroute, 26, 26, SJA1105_SIZE_DYN_CMD);
447 }
448
sja1105et_mgmt_route_entry_packing(void * buf,void * entry_ptr,enum packing_op op)449 static size_t sja1105et_mgmt_route_entry_packing(void *buf, void *entry_ptr,
450 enum packing_op op)
451 {
452 struct sja1105_mgmt_entry *entry = entry_ptr;
453 const size_t size = SJA1105ET_SIZE_L2_LOOKUP_ENTRY;
454
455 /* UM10944: To specify if a PTP egress timestamp shall be captured on
456 * each port upon transmission of the frame, the LSB of VLANID in the
457 * ENTRY field provided by the host must be set.
458 * Bit 1 of VLANID then specifies the register where the timestamp for
459 * this port is stored in.
460 */
461 sja1105_packing(buf, &entry->tsreg, 85, 85, size, op);
462 sja1105_packing(buf, &entry->takets, 84, 84, size, op);
463 sja1105_packing(buf, &entry->macaddr, 83, 36, size, op);
464 sja1105_packing(buf, &entry->destports, 35, 31, size, op);
465 sja1105_packing(buf, &entry->enfport, 30, 30, size, op);
466 return size;
467 }
468
469 static void
sja1105pqrs_mgmt_route_cmd_packing(void * buf,struct sja1105_dyn_cmd * cmd,enum packing_op op)470 sja1105pqrs_mgmt_route_cmd_packing(void *buf, struct sja1105_dyn_cmd *cmd,
471 enum packing_op op)
472 {
473 u8 *p = buf + SJA1105PQRS_SIZE_L2_LOOKUP_ENTRY;
474 u64 mgmtroute = 1;
475
476 sja1105pqrs_l2_lookup_cmd_packing(buf, cmd, op);
477 if (op == PACK)
478 sja1105_pack(p, &mgmtroute, 26, 26, SJA1105_SIZE_DYN_CMD);
479 }
480
sja1105pqrs_mgmt_route_entry_packing(void * buf,void * entry_ptr,enum packing_op op)481 static size_t sja1105pqrs_mgmt_route_entry_packing(void *buf, void *entry_ptr,
482 enum packing_op op)
483 {
484 const size_t size = SJA1105PQRS_SIZE_L2_LOOKUP_ENTRY;
485 struct sja1105_mgmt_entry *entry = entry_ptr;
486
487 /* In P/Q/R/S, enfport got renamed to mgmtvalid, but its purpose
488 * is the same (driver uses it to confirm that frame was sent).
489 * So just keep the name from E/T.
490 */
491 sja1105_packing(buf, &entry->tsreg, 71, 71, size, op);
492 sja1105_packing(buf, &entry->takets, 70, 70, size, op);
493 sja1105_packing(buf, &entry->macaddr, 69, 22, size, op);
494 sja1105_packing(buf, &entry->destports, 21, 17, size, op);
495 sja1105_packing(buf, &entry->enfport, 16, 16, size, op);
496 return size;
497 }
498
499 /* In E/T, entry is at addresses 0x27-0x28. There is a 4 byte gap at 0x29,
500 * and command is at 0x2a. Similarly in P/Q/R/S there is a 1 register gap
501 * between entry (0x2d, 0x2e) and command (0x30).
502 */
503 static void
sja1105_vlan_lookup_cmd_packing(void * buf,struct sja1105_dyn_cmd * cmd,enum packing_op op)504 sja1105_vlan_lookup_cmd_packing(void *buf, struct sja1105_dyn_cmd *cmd,
505 enum packing_op op)
506 {
507 u8 *p = buf + SJA1105_SIZE_VLAN_LOOKUP_ENTRY + 4;
508 const int size = SJA1105_SIZE_DYN_CMD;
509
510 sja1105_packing(p, &cmd->valid, 31, 31, size, op);
511 sja1105_packing(p, &cmd->rdwrset, 30, 30, size, op);
512 sja1105_packing(p, &cmd->valident, 27, 27, size, op);
513 /* Hack - see comments above, applied for 'vlanid' field of
514 * struct sja1105_vlan_lookup_entry.
515 */
516 sja1105_packing(buf, &cmd->index, 38, 27,
517 SJA1105_SIZE_VLAN_LOOKUP_ENTRY, op);
518 }
519
520 /* In SJA1110 there is no gap between the command and the data, yay... */
521 static void
sja1110_vlan_lookup_cmd_packing(void * buf,struct sja1105_dyn_cmd * cmd,enum packing_op op)522 sja1110_vlan_lookup_cmd_packing(void *buf, struct sja1105_dyn_cmd *cmd,
523 enum packing_op op)
524 {
525 u8 *p = buf + SJA1110_SIZE_VLAN_LOOKUP_ENTRY;
526 const int size = SJA1105_SIZE_DYN_CMD;
527 u64 type_entry = 0;
528
529 sja1105_packing(p, &cmd->valid, 31, 31, size, op);
530 sja1105_packing(p, &cmd->rdwrset, 30, 30, size, op);
531 sja1105_packing(p, &cmd->errors, 29, 29, size, op);
532 /* Hack: treat 'vlanid' field of struct sja1105_vlan_lookup_entry as
533 * cmd->index.
534 */
535 sja1105_packing(buf, &cmd->index, 38, 27,
536 SJA1110_SIZE_VLAN_LOOKUP_ENTRY, op);
537
538 /* But the VALIDENT bit has disappeared, now we are supposed to
539 * invalidate an entry through the TYPE_ENTRY field of the entry..
540 * This is a hack to transform the non-zero quality of the TYPE_ENTRY
541 * field into a VALIDENT bit.
542 */
543 if (op == PACK && !cmd->valident) {
544 sja1105_packing(buf, &type_entry, 40, 39,
545 SJA1110_SIZE_VLAN_LOOKUP_ENTRY, PACK);
546 } else if (op == UNPACK) {
547 sja1105_packing(buf, &type_entry, 40, 39,
548 SJA1110_SIZE_VLAN_LOOKUP_ENTRY, UNPACK);
549 cmd->valident = !!type_entry;
550 }
551 }
552
553 static void
sja1105_l2_forwarding_cmd_packing(void * buf,struct sja1105_dyn_cmd * cmd,enum packing_op op)554 sja1105_l2_forwarding_cmd_packing(void *buf, struct sja1105_dyn_cmd *cmd,
555 enum packing_op op)
556 {
557 u8 *p = buf + SJA1105_SIZE_L2_FORWARDING_ENTRY;
558 const int size = SJA1105_SIZE_DYN_CMD;
559
560 sja1105_packing(p, &cmd->valid, 31, 31, size, op);
561 sja1105_packing(p, &cmd->errors, 30, 30, size, op);
562 sja1105_packing(p, &cmd->rdwrset, 29, 29, size, op);
563 sja1105_packing(p, &cmd->index, 4, 0, size, op);
564 }
565
566 static void
sja1110_l2_forwarding_cmd_packing(void * buf,struct sja1105_dyn_cmd * cmd,enum packing_op op)567 sja1110_l2_forwarding_cmd_packing(void *buf, struct sja1105_dyn_cmd *cmd,
568 enum packing_op op)
569 {
570 u8 *p = buf + SJA1105_SIZE_L2_FORWARDING_ENTRY;
571 const int size = SJA1105_SIZE_DYN_CMD;
572
573 sja1105_packing(p, &cmd->valid, 31, 31, size, op);
574 sja1105_packing(p, &cmd->rdwrset, 30, 30, size, op);
575 sja1105_packing(p, &cmd->errors, 29, 29, size, op);
576 sja1105_packing(p, &cmd->index, 4, 0, size, op);
577 }
578
579 static void
sja1105et_mac_config_cmd_packing(void * buf,struct sja1105_dyn_cmd * cmd,enum packing_op op)580 sja1105et_mac_config_cmd_packing(void *buf, struct sja1105_dyn_cmd *cmd,
581 enum packing_op op)
582 {
583 const int size = SJA1105_SIZE_DYN_CMD;
584 /* Yup, user manual definitions are reversed */
585 u8 *reg1 = buf + 4;
586
587 sja1105_packing(reg1, &cmd->valid, 31, 31, size, op);
588 sja1105_packing(reg1, &cmd->index, 26, 24, size, op);
589 }
590
sja1105et_mac_config_entry_packing(void * buf,void * entry_ptr,enum packing_op op)591 static size_t sja1105et_mac_config_entry_packing(void *buf, void *entry_ptr,
592 enum packing_op op)
593 {
594 const int size = SJA1105ET_SIZE_MAC_CONFIG_DYN_ENTRY;
595 struct sja1105_mac_config_entry *entry = entry_ptr;
596 /* Yup, user manual definitions are reversed */
597 u8 *reg1 = buf + 4;
598 u8 *reg2 = buf;
599
600 sja1105_packing(reg1, &entry->speed, 30, 29, size, op);
601 sja1105_packing(reg1, &entry->drpdtag, 23, 23, size, op);
602 sja1105_packing(reg1, &entry->drpuntag, 22, 22, size, op);
603 sja1105_packing(reg1, &entry->retag, 21, 21, size, op);
604 sja1105_packing(reg1, &entry->dyn_learn, 20, 20, size, op);
605 sja1105_packing(reg1, &entry->egress, 19, 19, size, op);
606 sja1105_packing(reg1, &entry->ingress, 18, 18, size, op);
607 sja1105_packing(reg1, &entry->ing_mirr, 17, 17, size, op);
608 sja1105_packing(reg1, &entry->egr_mirr, 16, 16, size, op);
609 sja1105_packing(reg1, &entry->vlanprio, 14, 12, size, op);
610 sja1105_packing(reg1, &entry->vlanid, 11, 0, size, op);
611 sja1105_packing(reg2, &entry->tp_delin, 31, 16, size, op);
612 sja1105_packing(reg2, &entry->tp_delout, 15, 0, size, op);
613 /* MAC configuration table entries which can't be reconfigured:
614 * top, base, enabled, ifg, maxage, drpnona664
615 */
616 /* Bogus return value, not used anywhere */
617 return 0;
618 }
619
620 static void
sja1105pqrs_mac_config_cmd_packing(void * buf,struct sja1105_dyn_cmd * cmd,enum packing_op op)621 sja1105pqrs_mac_config_cmd_packing(void *buf, struct sja1105_dyn_cmd *cmd,
622 enum packing_op op)
623 {
624 const int size = SJA1105ET_SIZE_MAC_CONFIG_DYN_ENTRY;
625 u8 *p = buf + SJA1105PQRS_SIZE_MAC_CONFIG_ENTRY;
626
627 sja1105_packing(p, &cmd->valid, 31, 31, size, op);
628 sja1105_packing(p, &cmd->errors, 30, 30, size, op);
629 sja1105_packing(p, &cmd->rdwrset, 29, 29, size, op);
630 sja1105_packing(p, &cmd->index, 2, 0, size, op);
631 }
632
633 static void
sja1110_mac_config_cmd_packing(void * buf,struct sja1105_dyn_cmd * cmd,enum packing_op op)634 sja1110_mac_config_cmd_packing(void *buf, struct sja1105_dyn_cmd *cmd,
635 enum packing_op op)
636 {
637 u8 *p = buf + SJA1105PQRS_SIZE_MAC_CONFIG_ENTRY;
638 const int size = SJA1105_SIZE_DYN_CMD;
639
640 sja1105_packing(p, &cmd->valid, 31, 31, size, op);
641 sja1105_packing(p, &cmd->rdwrset, 30, 30, size, op);
642 sja1105_packing(p, &cmd->errors, 29, 29, size, op);
643 sja1105_packing(p, &cmd->index, 3, 0, size, op);
644 }
645
646 static void
sja1105et_l2_lookup_params_cmd_packing(void * buf,struct sja1105_dyn_cmd * cmd,enum packing_op op)647 sja1105et_l2_lookup_params_cmd_packing(void *buf, struct sja1105_dyn_cmd *cmd,
648 enum packing_op op)
649 {
650 sja1105_packing(buf, &cmd->valid, 31, 31,
651 SJA1105ET_SIZE_L2_LOOKUP_PARAMS_DYN_CMD, op);
652 }
653
654 static size_t
sja1105et_l2_lookup_params_entry_packing(void * buf,void * entry_ptr,enum packing_op op)655 sja1105et_l2_lookup_params_entry_packing(void *buf, void *entry_ptr,
656 enum packing_op op)
657 {
658 struct sja1105_l2_lookup_params_entry *entry = entry_ptr;
659
660 sja1105_packing(buf, &entry->poly, 7, 0,
661 SJA1105ET_SIZE_L2_LOOKUP_PARAMS_DYN_CMD, op);
662 /* Bogus return value, not used anywhere */
663 return 0;
664 }
665
666 static void
sja1105pqrs_l2_lookup_params_cmd_packing(void * buf,struct sja1105_dyn_cmd * cmd,enum packing_op op)667 sja1105pqrs_l2_lookup_params_cmd_packing(void *buf,
668 struct sja1105_dyn_cmd *cmd,
669 enum packing_op op)
670 {
671 u8 *p = buf + SJA1105PQRS_SIZE_L2_LOOKUP_PARAMS_ENTRY;
672 const int size = SJA1105_SIZE_DYN_CMD;
673
674 sja1105_packing(p, &cmd->valid, 31, 31, size, op);
675 sja1105_packing(p, &cmd->rdwrset, 30, 30, size, op);
676 }
677
678 static void
sja1110_l2_lookup_params_cmd_packing(void * buf,struct sja1105_dyn_cmd * cmd,enum packing_op op)679 sja1110_l2_lookup_params_cmd_packing(void *buf, struct sja1105_dyn_cmd *cmd,
680 enum packing_op op)
681 {
682 u8 *p = buf + SJA1110_SIZE_L2_LOOKUP_PARAMS_ENTRY;
683 const int size = SJA1105_SIZE_DYN_CMD;
684
685 sja1105_packing(p, &cmd->valid, 31, 31, size, op);
686 sja1105_packing(p, &cmd->rdwrset, 30, 30, size, op);
687 sja1105_packing(p, &cmd->errors, 29, 29, size, op);
688 }
689
690 static void
sja1105et_general_params_cmd_packing(void * buf,struct sja1105_dyn_cmd * cmd,enum packing_op op)691 sja1105et_general_params_cmd_packing(void *buf, struct sja1105_dyn_cmd *cmd,
692 enum packing_op op)
693 {
694 const int size = SJA1105ET_SIZE_GENERAL_PARAMS_DYN_CMD;
695
696 sja1105_packing(buf, &cmd->valid, 31, 31, size, op);
697 sja1105_packing(buf, &cmd->errors, 30, 30, size, op);
698 }
699
700 static size_t
sja1105et_general_params_entry_packing(void * buf,void * entry_ptr,enum packing_op op)701 sja1105et_general_params_entry_packing(void *buf, void *entry_ptr,
702 enum packing_op op)
703 {
704 struct sja1105_general_params_entry *entry = entry_ptr;
705 const int size = SJA1105ET_SIZE_GENERAL_PARAMS_DYN_CMD;
706
707 sja1105_packing(buf, &entry->mirr_port, 2, 0, size, op);
708 /* Bogus return value, not used anywhere */
709 return 0;
710 }
711
712 static void
sja1105pqrs_general_params_cmd_packing(void * buf,struct sja1105_dyn_cmd * cmd,enum packing_op op)713 sja1105pqrs_general_params_cmd_packing(void *buf, struct sja1105_dyn_cmd *cmd,
714 enum packing_op op)
715 {
716 u8 *p = buf + SJA1105PQRS_SIZE_GENERAL_PARAMS_ENTRY;
717 const int size = SJA1105_SIZE_DYN_CMD;
718
719 sja1105_packing(p, &cmd->valid, 31, 31, size, op);
720 sja1105_packing(p, &cmd->errors, 30, 30, size, op);
721 sja1105_packing(p, &cmd->rdwrset, 28, 28, size, op);
722 }
723
724 static void
sja1110_general_params_cmd_packing(void * buf,struct sja1105_dyn_cmd * cmd,enum packing_op op)725 sja1110_general_params_cmd_packing(void *buf, struct sja1105_dyn_cmd *cmd,
726 enum packing_op op)
727 {
728 u8 *p = buf + SJA1110_SIZE_GENERAL_PARAMS_ENTRY;
729 const int size = SJA1105_SIZE_DYN_CMD;
730
731 sja1105_packing(p, &cmd->valid, 31, 31, size, op);
732 sja1105_packing(p, &cmd->rdwrset, 30, 30, size, op);
733 sja1105_packing(p, &cmd->errors, 29, 29, size, op);
734 }
735
736 static void
sja1105pqrs_avb_params_cmd_packing(void * buf,struct sja1105_dyn_cmd * cmd,enum packing_op op)737 sja1105pqrs_avb_params_cmd_packing(void *buf, struct sja1105_dyn_cmd *cmd,
738 enum packing_op op)
739 {
740 u8 *p = buf + SJA1105PQRS_SIZE_AVB_PARAMS_ENTRY;
741 const int size = SJA1105_SIZE_DYN_CMD;
742
743 sja1105_packing(p, &cmd->valid, 31, 31, size, op);
744 sja1105_packing(p, &cmd->errors, 30, 30, size, op);
745 sja1105_packing(p, &cmd->rdwrset, 29, 29, size, op);
746 }
747
748 static void
sja1105_retagging_cmd_packing(void * buf,struct sja1105_dyn_cmd * cmd,enum packing_op op)749 sja1105_retagging_cmd_packing(void *buf, struct sja1105_dyn_cmd *cmd,
750 enum packing_op op)
751 {
752 u8 *p = buf + SJA1105_SIZE_RETAGGING_ENTRY;
753 const int size = SJA1105_SIZE_DYN_CMD;
754
755 sja1105_packing(p, &cmd->valid, 31, 31, size, op);
756 sja1105_packing(p, &cmd->errors, 30, 30, size, op);
757 sja1105_packing(p, &cmd->valident, 29, 29, size, op);
758 sja1105_packing(p, &cmd->rdwrset, 28, 28, size, op);
759 sja1105_packing(p, &cmd->index, 5, 0, size, op);
760 }
761
762 static void
sja1110_retagging_cmd_packing(void * buf,struct sja1105_dyn_cmd * cmd,enum packing_op op)763 sja1110_retagging_cmd_packing(void *buf, struct sja1105_dyn_cmd *cmd,
764 enum packing_op op)
765 {
766 u8 *p = buf + SJA1105_SIZE_RETAGGING_ENTRY;
767 const int size = SJA1105_SIZE_DYN_CMD;
768
769 sja1105_packing(p, &cmd->valid, 31, 31, size, op);
770 sja1105_packing(p, &cmd->rdwrset, 30, 30, size, op);
771 sja1105_packing(p, &cmd->errors, 29, 29, size, op);
772 sja1105_packing(p, &cmd->valident, 28, 28, size, op);
773 sja1105_packing(p, &cmd->index, 4, 0, size, op);
774 }
775
sja1105et_cbs_cmd_packing(void * buf,struct sja1105_dyn_cmd * cmd,enum packing_op op)776 static void sja1105et_cbs_cmd_packing(void *buf, struct sja1105_dyn_cmd *cmd,
777 enum packing_op op)
778 {
779 u8 *p = buf + SJA1105ET_SIZE_CBS_ENTRY;
780 const int size = SJA1105_SIZE_DYN_CMD;
781
782 sja1105_packing(p, &cmd->valid, 31, 31, size, op);
783 sja1105_packing(p, &cmd->index, 19, 16, size, op);
784 }
785
sja1105et_cbs_entry_packing(void * buf,void * entry_ptr,enum packing_op op)786 static size_t sja1105et_cbs_entry_packing(void *buf, void *entry_ptr,
787 enum packing_op op)
788 {
789 const size_t size = SJA1105ET_SIZE_CBS_ENTRY;
790 struct sja1105_cbs_entry *entry = entry_ptr;
791 u8 *cmd = buf + size;
792 u32 *p = buf;
793
794 sja1105_packing(cmd, &entry->port, 5, 3, SJA1105_SIZE_DYN_CMD, op);
795 sja1105_packing(cmd, &entry->prio, 2, 0, SJA1105_SIZE_DYN_CMD, op);
796 sja1105_packing(p + 3, &entry->credit_lo, 31, 0, size, op);
797 sja1105_packing(p + 2, &entry->credit_hi, 31, 0, size, op);
798 sja1105_packing(p + 1, &entry->send_slope, 31, 0, size, op);
799 sja1105_packing(p + 0, &entry->idle_slope, 31, 0, size, op);
800 return size;
801 }
802
sja1105pqrs_cbs_cmd_packing(void * buf,struct sja1105_dyn_cmd * cmd,enum packing_op op)803 static void sja1105pqrs_cbs_cmd_packing(void *buf, struct sja1105_dyn_cmd *cmd,
804 enum packing_op op)
805 {
806 u8 *p = buf + SJA1105PQRS_SIZE_CBS_ENTRY;
807 const int size = SJA1105_SIZE_DYN_CMD;
808
809 sja1105_packing(p, &cmd->valid, 31, 31, size, op);
810 sja1105_packing(p, &cmd->rdwrset, 30, 30, size, op);
811 sja1105_packing(p, &cmd->errors, 29, 29, size, op);
812 sja1105_packing(p, &cmd->index, 3, 0, size, op);
813 }
814
sja1110_cbs_cmd_packing(void * buf,struct sja1105_dyn_cmd * cmd,enum packing_op op)815 static void sja1110_cbs_cmd_packing(void *buf, struct sja1105_dyn_cmd *cmd,
816 enum packing_op op)
817 {
818 u8 *p = buf + SJA1105PQRS_SIZE_CBS_ENTRY;
819 const int size = SJA1105_SIZE_DYN_CMD;
820
821 sja1105_packing(p, &cmd->valid, 31, 31, size, op);
822 sja1105_packing(p, &cmd->rdwrset, 30, 30, size, op);
823 sja1105_packing(p, &cmd->errors, 29, 29, size, op);
824 sja1105_packing(p, &cmd->index, 7, 0, size, op);
825 }
826
sja1105pqrs_cbs_entry_packing(void * buf,void * entry_ptr,enum packing_op op)827 static size_t sja1105pqrs_cbs_entry_packing(void *buf, void *entry_ptr,
828 enum packing_op op)
829 {
830 const size_t size = SJA1105PQRS_SIZE_CBS_ENTRY;
831 struct sja1105_cbs_entry *entry = entry_ptr;
832
833 sja1105_packing(buf, &entry->port, 159, 157, size, op);
834 sja1105_packing(buf, &entry->prio, 156, 154, size, op);
835 sja1105_packing(buf, &entry->credit_lo, 153, 122, size, op);
836 sja1105_packing(buf, &entry->credit_hi, 121, 90, size, op);
837 sja1105_packing(buf, &entry->send_slope, 89, 58, size, op);
838 sja1105_packing(buf, &entry->idle_slope, 57, 26, size, op);
839 return size;
840 }
841
sja1110_cbs_entry_packing(void * buf,void * entry_ptr,enum packing_op op)842 static size_t sja1110_cbs_entry_packing(void *buf, void *entry_ptr,
843 enum packing_op op)
844 {
845 const size_t size = SJA1105PQRS_SIZE_CBS_ENTRY;
846 struct sja1105_cbs_entry *entry = entry_ptr;
847 u64 entry_type = SJA1110_CBS_SHAPER;
848
849 sja1105_packing(buf, &entry_type, 159, 159, size, op);
850 sja1105_packing(buf, &entry->credit_lo, 151, 120, size, op);
851 sja1105_packing(buf, &entry->credit_hi, 119, 88, size, op);
852 sja1105_packing(buf, &entry->send_slope, 87, 56, size, op);
853 sja1105_packing(buf, &entry->idle_slope, 55, 24, size, op);
854 return size;
855 }
856
sja1110_dummy_cmd_packing(void * buf,struct sja1105_dyn_cmd * cmd,enum packing_op op)857 static void sja1110_dummy_cmd_packing(void *buf, struct sja1105_dyn_cmd *cmd,
858 enum packing_op op)
859 {
860 }
861
862 static void
sja1110_l2_policing_cmd_packing(void * buf,struct sja1105_dyn_cmd * cmd,enum packing_op op)863 sja1110_l2_policing_cmd_packing(void *buf, struct sja1105_dyn_cmd *cmd,
864 enum packing_op op)
865 {
866 u8 *p = buf + SJA1105_SIZE_L2_POLICING_ENTRY;
867 const int size = SJA1105_SIZE_DYN_CMD;
868
869 sja1105_packing(p, &cmd->valid, 31, 31, size, op);
870 sja1105_packing(p, &cmd->rdwrset, 30, 30, size, op);
871 sja1105_packing(p, &cmd->errors, 29, 29, size, op);
872 sja1105_packing(p, &cmd->index, 6, 0, size, op);
873 }
874
875 #define OP_READ BIT(0)
876 #define OP_WRITE BIT(1)
877 #define OP_DEL BIT(2)
878 #define OP_SEARCH BIT(3)
879 #define OP_VALID_ANYWAY BIT(4)
880
881 /* SJA1105E/T: First generation */
882 const struct sja1105_dynamic_table_ops sja1105et_dyn_ops[BLK_IDX_MAX_DYN] = {
883 [BLK_IDX_VL_LOOKUP] = {
884 .entry_packing = sja1105et_vl_lookup_entry_packing,
885 .cmd_packing = sja1105et_vl_lookup_cmd_packing,
886 .access = OP_WRITE,
887 .max_entry_count = SJA1105_MAX_VL_LOOKUP_COUNT,
888 .packed_size = SJA1105ET_SIZE_VL_LOOKUP_DYN_CMD,
889 .addr = 0x35,
890 },
891 [BLK_IDX_L2_LOOKUP] = {
892 .entry_packing = sja1105et_dyn_l2_lookup_entry_packing,
893 .cmd_packing = sja1105et_l2_lookup_cmd_packing,
894 .access = (OP_READ | OP_WRITE | OP_DEL),
895 .max_entry_count = SJA1105_MAX_L2_LOOKUP_COUNT,
896 .packed_size = SJA1105ET_SIZE_L2_LOOKUP_DYN_CMD,
897 .addr = 0x20,
898 },
899 [BLK_IDX_MGMT_ROUTE] = {
900 .entry_packing = sja1105et_mgmt_route_entry_packing,
901 .cmd_packing = sja1105et_mgmt_route_cmd_packing,
902 .access = (OP_READ | OP_WRITE | OP_VALID_ANYWAY),
903 .max_entry_count = SJA1105_NUM_PORTS,
904 .packed_size = SJA1105ET_SIZE_L2_LOOKUP_DYN_CMD,
905 .addr = 0x20,
906 },
907 [BLK_IDX_VLAN_LOOKUP] = {
908 .entry_packing = sja1105_vlan_lookup_entry_packing,
909 .cmd_packing = sja1105_vlan_lookup_cmd_packing,
910 .access = (OP_WRITE | OP_DEL),
911 .max_entry_count = SJA1105_MAX_VLAN_LOOKUP_COUNT,
912 .packed_size = SJA1105_SIZE_VLAN_LOOKUP_DYN_CMD,
913 .addr = 0x27,
914 },
915 [BLK_IDX_L2_FORWARDING] = {
916 .entry_packing = sja1105_l2_forwarding_entry_packing,
917 .cmd_packing = sja1105_l2_forwarding_cmd_packing,
918 .max_entry_count = SJA1105_MAX_L2_FORWARDING_COUNT,
919 .access = OP_WRITE,
920 .packed_size = SJA1105_SIZE_L2_FORWARDING_DYN_CMD,
921 .addr = 0x24,
922 },
923 [BLK_IDX_MAC_CONFIG] = {
924 .entry_packing = sja1105et_mac_config_entry_packing,
925 .cmd_packing = sja1105et_mac_config_cmd_packing,
926 .max_entry_count = SJA1105_MAX_MAC_CONFIG_COUNT,
927 .access = OP_WRITE,
928 .packed_size = SJA1105ET_SIZE_MAC_CONFIG_DYN_CMD,
929 .addr = 0x36,
930 },
931 [BLK_IDX_L2_LOOKUP_PARAMS] = {
932 .entry_packing = sja1105et_l2_lookup_params_entry_packing,
933 .cmd_packing = sja1105et_l2_lookup_params_cmd_packing,
934 .max_entry_count = SJA1105_MAX_L2_LOOKUP_PARAMS_COUNT,
935 .access = OP_WRITE,
936 .packed_size = SJA1105ET_SIZE_L2_LOOKUP_PARAMS_DYN_CMD,
937 .addr = 0x38,
938 },
939 [BLK_IDX_GENERAL_PARAMS] = {
940 .entry_packing = sja1105et_general_params_entry_packing,
941 .cmd_packing = sja1105et_general_params_cmd_packing,
942 .max_entry_count = SJA1105_MAX_GENERAL_PARAMS_COUNT,
943 .access = OP_WRITE,
944 .packed_size = SJA1105ET_SIZE_GENERAL_PARAMS_DYN_CMD,
945 .addr = 0x34,
946 },
947 [BLK_IDX_RETAGGING] = {
948 .entry_packing = sja1105_retagging_entry_packing,
949 .cmd_packing = sja1105_retagging_cmd_packing,
950 .max_entry_count = SJA1105_MAX_RETAGGING_COUNT,
951 .access = (OP_WRITE | OP_DEL),
952 .packed_size = SJA1105_SIZE_RETAGGING_DYN_CMD,
953 .addr = 0x31,
954 },
955 [BLK_IDX_CBS] = {
956 .entry_packing = sja1105et_cbs_entry_packing,
957 .cmd_packing = sja1105et_cbs_cmd_packing,
958 .max_entry_count = SJA1105ET_MAX_CBS_COUNT,
959 .access = OP_WRITE,
960 .packed_size = SJA1105ET_SIZE_CBS_DYN_CMD,
961 .addr = 0x2c,
962 },
963 };
964
965 /* SJA1105P/Q/R/S: Second generation */
966 const struct sja1105_dynamic_table_ops sja1105pqrs_dyn_ops[BLK_IDX_MAX_DYN] = {
967 [BLK_IDX_VL_LOOKUP] = {
968 .entry_packing = sja1105_vl_lookup_entry_packing,
969 .cmd_packing = sja1105pqrs_vl_lookup_cmd_packing,
970 .access = (OP_READ | OP_WRITE),
971 .max_entry_count = SJA1105_MAX_VL_LOOKUP_COUNT,
972 .packed_size = SJA1105PQRS_SIZE_VL_LOOKUP_DYN_CMD,
973 .addr = 0x47,
974 },
975 [BLK_IDX_L2_LOOKUP] = {
976 .entry_packing = sja1105pqrs_dyn_l2_lookup_entry_packing,
977 .cmd_packing = sja1105pqrs_l2_lookup_cmd_packing,
978 .access = (OP_READ | OP_WRITE | OP_DEL | OP_SEARCH),
979 .max_entry_count = SJA1105_MAX_L2_LOOKUP_COUNT,
980 .packed_size = SJA1105PQRS_SIZE_L2_LOOKUP_DYN_CMD,
981 .addr = 0x24,
982 },
983 [BLK_IDX_MGMT_ROUTE] = {
984 .entry_packing = sja1105pqrs_mgmt_route_entry_packing,
985 .cmd_packing = sja1105pqrs_mgmt_route_cmd_packing,
986 .access = (OP_READ | OP_WRITE | OP_DEL | OP_SEARCH | OP_VALID_ANYWAY),
987 .max_entry_count = SJA1105_NUM_PORTS,
988 .packed_size = SJA1105PQRS_SIZE_L2_LOOKUP_DYN_CMD,
989 .addr = 0x24,
990 },
991 [BLK_IDX_VLAN_LOOKUP] = {
992 .entry_packing = sja1105_vlan_lookup_entry_packing,
993 .cmd_packing = sja1105_vlan_lookup_cmd_packing,
994 .access = (OP_READ | OP_WRITE | OP_DEL),
995 .max_entry_count = SJA1105_MAX_VLAN_LOOKUP_COUNT,
996 .packed_size = SJA1105_SIZE_VLAN_LOOKUP_DYN_CMD,
997 .addr = 0x2D,
998 },
999 [BLK_IDX_L2_FORWARDING] = {
1000 .entry_packing = sja1105_l2_forwarding_entry_packing,
1001 .cmd_packing = sja1105_l2_forwarding_cmd_packing,
1002 .max_entry_count = SJA1105_MAX_L2_FORWARDING_COUNT,
1003 .access = OP_WRITE,
1004 .packed_size = SJA1105_SIZE_L2_FORWARDING_DYN_CMD,
1005 .addr = 0x2A,
1006 },
1007 [BLK_IDX_MAC_CONFIG] = {
1008 .entry_packing = sja1105pqrs_mac_config_entry_packing,
1009 .cmd_packing = sja1105pqrs_mac_config_cmd_packing,
1010 .max_entry_count = SJA1105_MAX_MAC_CONFIG_COUNT,
1011 .access = (OP_READ | OP_WRITE),
1012 .packed_size = SJA1105PQRS_SIZE_MAC_CONFIG_DYN_CMD,
1013 .addr = 0x4B,
1014 },
1015 [BLK_IDX_L2_LOOKUP_PARAMS] = {
1016 .entry_packing = sja1105pqrs_l2_lookup_params_entry_packing,
1017 .cmd_packing = sja1105pqrs_l2_lookup_params_cmd_packing,
1018 .max_entry_count = SJA1105_MAX_L2_LOOKUP_PARAMS_COUNT,
1019 .access = (OP_READ | OP_WRITE),
1020 .packed_size = SJA1105PQRS_SIZE_L2_LOOKUP_PARAMS_DYN_CMD,
1021 .addr = 0x54,
1022 },
1023 [BLK_IDX_AVB_PARAMS] = {
1024 .entry_packing = sja1105pqrs_avb_params_entry_packing,
1025 .cmd_packing = sja1105pqrs_avb_params_cmd_packing,
1026 .max_entry_count = SJA1105_MAX_AVB_PARAMS_COUNT,
1027 .access = (OP_READ | OP_WRITE),
1028 .packed_size = SJA1105PQRS_SIZE_AVB_PARAMS_DYN_CMD,
1029 .addr = 0x8003,
1030 },
1031 [BLK_IDX_GENERAL_PARAMS] = {
1032 .entry_packing = sja1105pqrs_general_params_entry_packing,
1033 .cmd_packing = sja1105pqrs_general_params_cmd_packing,
1034 .max_entry_count = SJA1105_MAX_GENERAL_PARAMS_COUNT,
1035 .access = (OP_READ | OP_WRITE),
1036 .packed_size = SJA1105PQRS_SIZE_GENERAL_PARAMS_DYN_CMD,
1037 .addr = 0x3B,
1038 },
1039 [BLK_IDX_RETAGGING] = {
1040 .entry_packing = sja1105_retagging_entry_packing,
1041 .cmd_packing = sja1105_retagging_cmd_packing,
1042 .max_entry_count = SJA1105_MAX_RETAGGING_COUNT,
1043 .access = (OP_READ | OP_WRITE | OP_DEL),
1044 .packed_size = SJA1105_SIZE_RETAGGING_DYN_CMD,
1045 .addr = 0x38,
1046 },
1047 [BLK_IDX_CBS] = {
1048 .entry_packing = sja1105pqrs_cbs_entry_packing,
1049 .cmd_packing = sja1105pqrs_cbs_cmd_packing,
1050 .max_entry_count = SJA1105PQRS_MAX_CBS_COUNT,
1051 .access = OP_WRITE,
1052 .packed_size = SJA1105PQRS_SIZE_CBS_DYN_CMD,
1053 .addr = 0x32,
1054 },
1055 };
1056
1057 /* SJA1110: Third generation */
1058 const struct sja1105_dynamic_table_ops sja1110_dyn_ops[BLK_IDX_MAX_DYN] = {
1059 [BLK_IDX_VL_LOOKUP] = {
1060 .entry_packing = sja1110_vl_lookup_entry_packing,
1061 .cmd_packing = sja1110_vl_lookup_cmd_packing,
1062 .access = (OP_READ | OP_WRITE | OP_VALID_ANYWAY),
1063 .max_entry_count = SJA1110_MAX_VL_LOOKUP_COUNT,
1064 .packed_size = SJA1105PQRS_SIZE_VL_LOOKUP_DYN_CMD,
1065 .addr = SJA1110_SPI_ADDR(0x124),
1066 },
1067 [BLK_IDX_VL_POLICING] = {
1068 .entry_packing = sja1110_vl_policing_entry_packing,
1069 .cmd_packing = sja1110_vl_policing_cmd_packing,
1070 .access = (OP_READ | OP_WRITE | OP_VALID_ANYWAY),
1071 .max_entry_count = SJA1110_MAX_VL_POLICING_COUNT,
1072 .packed_size = SJA1110_SIZE_VL_POLICING_DYN_CMD,
1073 .addr = SJA1110_SPI_ADDR(0x310),
1074 },
1075 [BLK_IDX_L2_LOOKUP] = {
1076 .entry_packing = sja1110_dyn_l2_lookup_entry_packing,
1077 .cmd_packing = sja1110_l2_lookup_cmd_packing,
1078 .access = (OP_READ | OP_WRITE | OP_DEL | OP_SEARCH),
1079 .max_entry_count = SJA1105_MAX_L2_LOOKUP_COUNT,
1080 .packed_size = SJA1110_SIZE_L2_LOOKUP_DYN_CMD,
1081 .addr = SJA1110_SPI_ADDR(0x8c),
1082 },
1083 [BLK_IDX_VLAN_LOOKUP] = {
1084 .entry_packing = sja1110_vlan_lookup_entry_packing,
1085 .cmd_packing = sja1110_vlan_lookup_cmd_packing,
1086 .access = (OP_READ | OP_WRITE | OP_DEL),
1087 .max_entry_count = SJA1105_MAX_VLAN_LOOKUP_COUNT,
1088 .packed_size = SJA1110_SIZE_VLAN_LOOKUP_DYN_CMD,
1089 .addr = SJA1110_SPI_ADDR(0xb4),
1090 },
1091 [BLK_IDX_L2_FORWARDING] = {
1092 .entry_packing = sja1110_l2_forwarding_entry_packing,
1093 .cmd_packing = sja1110_l2_forwarding_cmd_packing,
1094 .max_entry_count = SJA1110_MAX_L2_FORWARDING_COUNT,
1095 .access = (OP_READ | OP_WRITE | OP_VALID_ANYWAY),
1096 .packed_size = SJA1105_SIZE_L2_FORWARDING_DYN_CMD,
1097 .addr = SJA1110_SPI_ADDR(0xa8),
1098 },
1099 [BLK_IDX_MAC_CONFIG] = {
1100 .entry_packing = sja1110_mac_config_entry_packing,
1101 .cmd_packing = sja1110_mac_config_cmd_packing,
1102 .max_entry_count = SJA1110_MAX_MAC_CONFIG_COUNT,
1103 .access = (OP_READ | OP_WRITE | OP_VALID_ANYWAY),
1104 .packed_size = SJA1105PQRS_SIZE_MAC_CONFIG_DYN_CMD,
1105 .addr = SJA1110_SPI_ADDR(0x134),
1106 },
1107 [BLK_IDX_L2_LOOKUP_PARAMS] = {
1108 .entry_packing = sja1110_l2_lookup_params_entry_packing,
1109 .cmd_packing = sja1110_l2_lookup_params_cmd_packing,
1110 .max_entry_count = SJA1105_MAX_L2_LOOKUP_PARAMS_COUNT,
1111 .access = (OP_READ | OP_WRITE | OP_VALID_ANYWAY),
1112 .packed_size = SJA1110_SIZE_L2_LOOKUP_PARAMS_DYN_CMD,
1113 .addr = SJA1110_SPI_ADDR(0x158),
1114 },
1115 [BLK_IDX_AVB_PARAMS] = {
1116 .entry_packing = sja1105pqrs_avb_params_entry_packing,
1117 .cmd_packing = sja1105pqrs_avb_params_cmd_packing,
1118 .max_entry_count = SJA1105_MAX_AVB_PARAMS_COUNT,
1119 .access = (OP_READ | OP_WRITE | OP_VALID_ANYWAY),
1120 .packed_size = SJA1105PQRS_SIZE_AVB_PARAMS_DYN_CMD,
1121 .addr = SJA1110_SPI_ADDR(0x2000C),
1122 },
1123 [BLK_IDX_GENERAL_PARAMS] = {
1124 .entry_packing = sja1110_general_params_entry_packing,
1125 .cmd_packing = sja1110_general_params_cmd_packing,
1126 .max_entry_count = SJA1105_MAX_GENERAL_PARAMS_COUNT,
1127 .access = (OP_READ | OP_WRITE | OP_VALID_ANYWAY),
1128 .packed_size = SJA1110_SIZE_GENERAL_PARAMS_DYN_CMD,
1129 .addr = SJA1110_SPI_ADDR(0xe8),
1130 },
1131 [BLK_IDX_RETAGGING] = {
1132 .entry_packing = sja1110_retagging_entry_packing,
1133 .cmd_packing = sja1110_retagging_cmd_packing,
1134 .max_entry_count = SJA1105_MAX_RETAGGING_COUNT,
1135 .access = (OP_READ | OP_WRITE | OP_DEL),
1136 .packed_size = SJA1105_SIZE_RETAGGING_DYN_CMD,
1137 .addr = SJA1110_SPI_ADDR(0xdc),
1138 },
1139 [BLK_IDX_CBS] = {
1140 .entry_packing = sja1110_cbs_entry_packing,
1141 .cmd_packing = sja1110_cbs_cmd_packing,
1142 .max_entry_count = SJA1110_MAX_CBS_COUNT,
1143 .access = (OP_READ | OP_WRITE | OP_VALID_ANYWAY),
1144 .packed_size = SJA1105PQRS_SIZE_CBS_DYN_CMD,
1145 .addr = SJA1110_SPI_ADDR(0xc4),
1146 },
1147 [BLK_IDX_XMII_PARAMS] = {
1148 .entry_packing = sja1110_xmii_params_entry_packing,
1149 .cmd_packing = sja1110_dummy_cmd_packing,
1150 .max_entry_count = SJA1105_MAX_XMII_PARAMS_COUNT,
1151 .access = (OP_READ | OP_VALID_ANYWAY),
1152 .packed_size = SJA1110_SIZE_XMII_PARAMS_DYN_CMD,
1153 .addr = SJA1110_SPI_ADDR(0x3c),
1154 },
1155 [BLK_IDX_L2_POLICING] = {
1156 .entry_packing = sja1110_l2_policing_entry_packing,
1157 .cmd_packing = sja1110_l2_policing_cmd_packing,
1158 .max_entry_count = SJA1110_MAX_L2_POLICING_COUNT,
1159 .access = (OP_READ | OP_WRITE | OP_VALID_ANYWAY),
1160 .packed_size = SJA1110_SIZE_L2_POLICING_DYN_CMD,
1161 .addr = SJA1110_SPI_ADDR(0x2fc),
1162 },
1163 [BLK_IDX_L2_FORWARDING_PARAMS] = {
1164 .entry_packing = sja1110_l2_forwarding_params_entry_packing,
1165 .cmd_packing = sja1110_dummy_cmd_packing,
1166 .max_entry_count = SJA1105_MAX_L2_FORWARDING_PARAMS_COUNT,
1167 .access = (OP_READ | OP_VALID_ANYWAY),
1168 .packed_size = SJA1110_SIZE_L2_FORWARDING_PARAMS_DYN_CMD,
1169 .addr = SJA1110_SPI_ADDR(0x20000),
1170 },
1171 };
1172
1173 #define SJA1105_DYNAMIC_CONFIG_SLEEP_US 10
1174 #define SJA1105_DYNAMIC_CONFIG_TIMEOUT_US 100000
1175
1176 static int
sja1105_dynamic_config_poll_valid(struct sja1105_private * priv,const struct sja1105_dynamic_table_ops * ops,void * entry,bool check_valident,bool check_errors)1177 sja1105_dynamic_config_poll_valid(struct sja1105_private *priv,
1178 const struct sja1105_dynamic_table_ops *ops,
1179 void *entry, bool check_valident,
1180 bool check_errors)
1181 {
1182 u8 packed_buf[SJA1105_MAX_DYN_CMD_SIZE] = {};
1183 struct sja1105_dyn_cmd cmd = {};
1184 int rc;
1185
1186 /* Read back the whole entry + command structure. */
1187 rc = sja1105_xfer_buf(priv, SPI_READ, ops->addr, packed_buf,
1188 ops->packed_size);
1189 if (rc)
1190 return rc;
1191
1192 /* Unpack the command structure, and return it to the caller in case it
1193 * needs to perform further checks on it (VALIDENT).
1194 */
1195 ops->cmd_packing(packed_buf, &cmd, UNPACK);
1196
1197 /* Hardware hasn't cleared VALID => still working on it */
1198 if (cmd.valid)
1199 return -EAGAIN;
1200
1201 if (check_valident && !cmd.valident && !(ops->access & OP_VALID_ANYWAY))
1202 return -ENOENT;
1203
1204 if (check_errors && cmd.errors)
1205 return -EINVAL;
1206
1207 /* Don't dereference possibly NULL pointer - maybe caller
1208 * only wanted to see whether the entry existed or not.
1209 */
1210 if (entry)
1211 ops->entry_packing(packed_buf, entry, UNPACK);
1212
1213 return 0;
1214 }
1215
1216 /* Poll the dynamic config entry's control area until the hardware has
1217 * cleared the VALID bit, which means we have confirmation that it has
1218 * finished processing the command.
1219 */
1220 static int
sja1105_dynamic_config_wait_complete(struct sja1105_private * priv,const struct sja1105_dynamic_table_ops * ops,void * entry,bool check_valident,bool check_errors)1221 sja1105_dynamic_config_wait_complete(struct sja1105_private *priv,
1222 const struct sja1105_dynamic_table_ops *ops,
1223 void *entry, bool check_valident,
1224 bool check_errors)
1225 {
1226 int err, rc;
1227
1228 err = read_poll_timeout(sja1105_dynamic_config_poll_valid,
1229 rc, rc != -EAGAIN,
1230 SJA1105_DYNAMIC_CONFIG_SLEEP_US,
1231 SJA1105_DYNAMIC_CONFIG_TIMEOUT_US,
1232 false, priv, ops, entry, check_valident,
1233 check_errors);
1234 return err < 0 ? err : rc;
1235 }
1236
1237 /* Provides read access to the settings through the dynamic interface
1238 * of the switch.
1239 * @blk_idx is used as key to select from the sja1105_dynamic_table_ops.
1240 * The selection is limited by the hardware in respect to which
1241 * configuration blocks can be read through the dynamic interface.
1242 * @index is used to retrieve a particular table entry. If negative,
1243 * (and if the @blk_idx supports the searching operation) a search
1244 * is performed by the @entry parameter.
1245 * @entry Type-casted to an unpacked structure that holds a table entry
1246 * of the type specified in @blk_idx.
1247 * Usually an output argument. If @index is negative, then this
1248 * argument is used as input/output: it should be pre-populated
1249 * with the element to search for. Entries which support the
1250 * search operation will have an "index" field (not the @index
1251 * argument to this function) and that is where the found index
1252 * will be returned (or left unmodified - thus negative - if not
1253 * found).
1254 */
sja1105_dynamic_config_read(struct sja1105_private * priv,enum sja1105_blk_idx blk_idx,int index,void * entry)1255 int sja1105_dynamic_config_read(struct sja1105_private *priv,
1256 enum sja1105_blk_idx blk_idx,
1257 int index, void *entry)
1258 {
1259 const struct sja1105_dynamic_table_ops *ops;
1260 struct sja1105_dyn_cmd cmd = {0};
1261 /* SPI payload buffer */
1262 u8 packed_buf[SJA1105_MAX_DYN_CMD_SIZE] = {0};
1263 int rc;
1264
1265 if (blk_idx >= BLK_IDX_MAX_DYN)
1266 return -ERANGE;
1267
1268 ops = &priv->info->dyn_ops[blk_idx];
1269
1270 if (index >= 0 && index >= ops->max_entry_count)
1271 return -ERANGE;
1272 if (index < 0 && !(ops->access & OP_SEARCH))
1273 return -EOPNOTSUPP;
1274 if (!(ops->access & OP_READ))
1275 return -EOPNOTSUPP;
1276 if (ops->packed_size > SJA1105_MAX_DYN_CMD_SIZE)
1277 return -ERANGE;
1278 if (!ops->cmd_packing)
1279 return -EOPNOTSUPP;
1280 if (!ops->entry_packing)
1281 return -EOPNOTSUPP;
1282
1283 cmd.valid = true; /* Trigger action on table entry */
1284 cmd.rdwrset = SPI_READ; /* Action is read */
1285 if (index < 0) {
1286 /* Avoid copying a signed negative number to an u64 */
1287 cmd.index = 0;
1288 cmd.search = true;
1289 } else {
1290 cmd.index = index;
1291 cmd.search = false;
1292 }
1293 cmd.valident = true;
1294 ops->cmd_packing(packed_buf, &cmd, PACK);
1295
1296 if (cmd.search)
1297 ops->entry_packing(packed_buf, entry, PACK);
1298
1299 /* Send SPI write operation: read config table entry */
1300 mutex_lock(&priv->dynamic_config_lock);
1301 rc = sja1105_xfer_buf(priv, SPI_WRITE, ops->addr, packed_buf,
1302 ops->packed_size);
1303 if (rc < 0)
1304 goto out;
1305
1306 rc = sja1105_dynamic_config_wait_complete(priv, ops, entry, true, false);
1307 out:
1308 mutex_unlock(&priv->dynamic_config_lock);
1309
1310 return rc;
1311 }
1312
sja1105_dynamic_config_write(struct sja1105_private * priv,enum sja1105_blk_idx blk_idx,int index,void * entry,bool keep)1313 int sja1105_dynamic_config_write(struct sja1105_private *priv,
1314 enum sja1105_blk_idx blk_idx,
1315 int index, void *entry, bool keep)
1316 {
1317 const struct sja1105_dynamic_table_ops *ops;
1318 struct sja1105_dyn_cmd cmd = {0};
1319 /* SPI payload buffer */
1320 u8 packed_buf[SJA1105_MAX_DYN_CMD_SIZE] = {0};
1321 int rc;
1322
1323 if (blk_idx >= BLK_IDX_MAX_DYN)
1324 return -ERANGE;
1325
1326 ops = &priv->info->dyn_ops[blk_idx];
1327
1328 if (index >= ops->max_entry_count)
1329 return -ERANGE;
1330 if (index < 0)
1331 return -ERANGE;
1332 if (!(ops->access & OP_WRITE))
1333 return -EOPNOTSUPP;
1334 if (!keep && !(ops->access & OP_DEL))
1335 return -EOPNOTSUPP;
1336 if (ops->packed_size > SJA1105_MAX_DYN_CMD_SIZE)
1337 return -ERANGE;
1338
1339 cmd.valident = keep; /* If false, deletes entry */
1340 cmd.valid = true; /* Trigger action on table entry */
1341 cmd.rdwrset = SPI_WRITE; /* Action is write */
1342 cmd.index = index;
1343
1344 if (!ops->cmd_packing)
1345 return -EOPNOTSUPP;
1346 ops->cmd_packing(packed_buf, &cmd, PACK);
1347
1348 if (!ops->entry_packing)
1349 return -EOPNOTSUPP;
1350 /* Don't dereference potentially NULL pointer if just
1351 * deleting a table entry is what was requested. For cases
1352 * where 'index' field is physically part of entry structure,
1353 * and needed here, we deal with that in the cmd_packing callback.
1354 */
1355 if (keep)
1356 ops->entry_packing(packed_buf, entry, PACK);
1357
1358 /* Send SPI write operation: read config table entry */
1359 mutex_lock(&priv->dynamic_config_lock);
1360 rc = sja1105_xfer_buf(priv, SPI_WRITE, ops->addr, packed_buf,
1361 ops->packed_size);
1362 if (rc < 0)
1363 goto out;
1364
1365 rc = sja1105_dynamic_config_wait_complete(priv, ops, NULL, false, true);
1366 out:
1367 mutex_unlock(&priv->dynamic_config_lock);
1368
1369 return rc;
1370 }
1371
sja1105_crc8_add(u8 crc,u8 byte,u8 poly)1372 static u8 sja1105_crc8_add(u8 crc, u8 byte, u8 poly)
1373 {
1374 int i;
1375
1376 for (i = 0; i < 8; i++) {
1377 if ((crc ^ byte) & (1 << 7)) {
1378 crc <<= 1;
1379 crc ^= poly;
1380 } else {
1381 crc <<= 1;
1382 }
1383 byte <<= 1;
1384 }
1385 return crc;
1386 }
1387
1388 /* CRC8 algorithm with non-reversed input, non-reversed output,
1389 * no input xor and no output xor. Code customized for receiving
1390 * the SJA1105 E/T FDB keys (vlanid, macaddr) as input. CRC polynomial
1391 * is also received as argument in the Koopman notation that the switch
1392 * hardware stores it in.
1393 */
sja1105et_fdb_hash(struct sja1105_private * priv,const u8 * addr,u16 vid)1394 u8 sja1105et_fdb_hash(struct sja1105_private *priv, const u8 *addr, u16 vid)
1395 {
1396 struct sja1105_l2_lookup_params_entry *l2_lookup_params =
1397 priv->static_config.tables[BLK_IDX_L2_LOOKUP_PARAMS].entries;
1398 u64 input, poly_koopman = l2_lookup_params->poly;
1399 /* Convert polynomial from Koopman to 'normal' notation */
1400 u8 poly = (u8)(1 + (poly_koopman << 1));
1401 u8 crc = 0; /* seed */
1402 int i;
1403
1404 input = ((u64)vid << 48) | ether_addr_to_u64(addr);
1405
1406 /* Mask the eight bytes starting from MSB one at a time */
1407 for (i = 56; i >= 0; i -= 8) {
1408 u8 byte = (input & (0xffull << i)) >> i;
1409
1410 crc = sja1105_crc8_add(crc, byte, poly);
1411 }
1412 return crc;
1413 }
1414