1 /* SPDX-License-Identifier: GPL-2.0 */
2 /**
3  * encx24j600_hw.h: Register definitions
4  *
5  */
6 
7 #ifndef _ENCX24J600_HW_H
8 #define _ENCX24J600_HW_H
9 
10 struct encx24j600_context {
11 	struct spi_device *spi;
12 	struct regmap *regmap;
13 	struct regmap *phymap;
14 	struct mutex mutex; /* mutex to protect access to regmap */
15 	int bank;
16 };
17 
18 void devm_regmap_init_encx24j600(struct device *dev,
19 				 struct encx24j600_context *ctx);
20 
21 /* Single-byte instructions */
22 #define BANK_SELECT(bank) (0xC0 | ((bank & (BANK_MASK >> BANK_SHIFT)) << 1))
23 #define B0SEL 0xC0		/* Bank 0 Select */
24 #define B1SEL 0xC2		/* Bank 1 Select */
25 #define B2SEL 0xC4		/* Bank 2 Select */
26 #define B3SEL 0xC6		/* Bank 3 Select */
27 #define SETETHRST 0xCA		/* System Reset */
28 #define FCDISABLE 0xE0		/* Flow Control Disable */
29 #define FCSINGLE 0xE2		/* Flow Control Single */
30 #define FCMULTIPLE 0xE4		/* Flow Control Multiple */
31 #define FCCLEAR 0xE6		/* Flow Control Clear */
32 #define SETPKTDEC 0xCC		/* Decrement Packet Counter */
33 #define DMASTOP 0xD2		/* DMA Stop */
34 #define DMACKSUM 0xD8		/* DMA Start Checksum */
35 #define DMACKSUMS 0xDA		/* DMA Start Checksum with Seed */
36 #define DMACOPY 0xDC		/* DMA Start Copy */
37 #define DMACOPYS 0xDE		/* DMA Start Copy and Checksum with Seed */
38 #define SETTXRTS 0xD4		/* Request Packet Transmission */
39 #define ENABLERX 0xE8		/* Enable RX */
40 #define DISABLERX 0xEA		/* Disable RX */
41 #define SETEIE 0xEC		/* Enable Interrupts */
42 #define CLREIE 0xEE		/* Disable Interrupts */
43 
44 /* Two byte instructions */
45 #define RBSEL 0xC8		/* Read Bank Select */
46 
47 /* Three byte instructions */
48 #define WGPRDPT 0x60		/* Write EGPRDPT */
49 #define RGPRDPT 0x62		/* Read EGPRDPT */
50 #define WRXRDPT 0x64		/* Write ERXRDPT */
51 #define RRXRDPT 0x66		/* Read ERXRDPT */
52 #define WUDARDPT 0x68		/* Write EUDARDPT */
53 #define RUDARDPT 0x6A		/* Read EUDARDPT */
54 #define WGPWRPT 0x6C		/* Write EGPWRPT */
55 #define RGPWRPT 0x6E		/* Read EGPWRPT */
56 #define WRXWRPT 0x70		/* Write ERXWRPT */
57 #define RRXWRPT 0x72		/* Read ERXWRPT */
58 #define WUDAWRPT 0x74		/* Write EUDAWRPT */
59 #define RUDAWRPT 0x76		/* Read EUDAWRPT */
60 
61 /* n byte instructions */
62 #define RCRCODE 0x00
63 #define WCRCODE 0x40
64 #define BFSCODE 0x80
65 #define BFCCODE 0xA0
66 #define RCR(addr) (RCRCODE | (addr & ADDR_MASK)) /* Read Control Register */
67 #define WCR(addr) (WCRCODE | (addr & ADDR_MASK)) /* Write Control Register */
68 #define RCRU 0x20		/* Read Control Register Unbanked */
69 #define WCRU 0x22		/* Write Control Register Unbanked */
70 #define BFS(addr) (BFSCODE | (addr & ADDR_MASK)) /* Bit Field Set */
71 #define BFC(addr) (BFCCODE | (addr & ADDR_MASK)) /* Bit Field Clear */
72 #define BFSU 0x24		/* Bit Field Set Unbanked */
73 #define BFCU 0x26		/* Bit Field Clear Unbanked */
74 #define RGPDATA 0x28		/* Read EGPDATA */
75 #define WGPDATA 0x2A		/* Write EGPDATA */
76 #define RRXDATA 0x2C		/* Read ERXDATA */
77 #define WRXDATA 0x2E		/* Write ERXDATA */
78 #define RUDADATA 0x30		/* Read EUDADATA */
79 #define WUDADATA 0x32		/* Write EUDADATA */
80 
81 #define SFR_REG_COUNT	0xA0
82 
83 /* ENC424J600 Control Registers
84  * Control register definitions are a combination of address
85  * and bank number
86  * - Register address (bits 0-4)
87  * - Bank number (bits 5-6)
88  */
89 #define ADDR_MASK 0x1F
90 #define BANK_MASK 0x60
91 #define BANK_SHIFT 5
92 
93 /* All-bank registers */
94 #define EUDAST 0x16
95 #define EUDAND 0x18
96 #define ESTAT 0x1A
97 #define EIR 0x1C
98 #define ECON1 0x1E
99 
100 /* Bank 0 registers */
101 #define ETXST (0x00 | 0x00)
102 #define ETXLEN (0x02 | 0x00)
103 #define ERXST (0x04 | 0x00)
104 #define ERXTAIL (0x06 | 0x00)
105 #define ERXHEAD (0x08 | 0x00)
106 #define EDMAST (0x0A | 0x00)
107 #define EDMALEN (0x0C | 0x00)
108 #define EDMADST (0x0E | 0x00)
109 #define EDMACS (0x10 | 0x00)
110 #define ETXSTAT (0x12 | 0x00)
111 #define ETXWIRE (0x14 | 0x00)
112 
113 /* Bank 1 registers */
114 #define EHT1 (0x00 | 0x20)
115 #define EHT2 (0x02 | 0x20)
116 #define EHT3 (0x04 | 0x20)
117 #define EHT4 (0x06 | 0x20)
118 #define EPMM1 (0x08 | 0x20)
119 #define EPMM2 (0x0A | 0x20)
120 #define EPMM3 (0x0C | 0x20)
121 #define EPMM4 (0x0E | 0x20)
122 #define EPMCS (0x10 | 0x20)
123 #define EPMO (0x12 | 0x20)
124 #define ERXFCON (0x14 | 0x20)
125 
126 /* Bank 2 registers */
127 #define MACON1 (0x00 | 0x40)
128 #define MACON2 (0x02 | 0x40)
129 #define MABBIPG (0x04 | 0x40)
130 #define MAIPG (0x06 | 0x40)
131 #define MACLCON (0x08 | 0x40)
132 #define MAMXFL (0x0A | 0x40)
133 #define MICMD (0x12 | 0x40)
134 #define MIREGADR (0x14 | 0x40)
135 
136 /* Bank 3 registers */
137 #define MAADR3 (0x00 | 0x60)
138 #define MAADR2 (0x02 | 0x60)
139 #define MAADR1 (0x04 | 0x60)
140 #define MIWR (0x06 | 0x60)
141 #define MIRD (0x08 | 0x60)
142 #define MISTAT (0x0A | 0x60)
143 #define EPAUS (0x0C | 0x60)
144 #define ECON2 (0x0E | 0x60)
145 #define ERXWM (0x10 | 0x60)
146 #define EIE (0x12 | 0x60)
147 #define EIDLED (0x14 | 0x60)
148 
149 /* Unbanked registers */
150 #define EGPDATA (0x00 | 0x80)
151 #define ERXDATA (0x02 | 0x80)
152 #define EUDADATA (0x04 | 0x80)
153 #define EGPRDPT (0x06 | 0x80)
154 #define EGPWRPT (0x08 | 0x80)
155 #define ERXRDPT (0x0A | 0x80)
156 #define ERXWRPT (0x0C | 0x80)
157 #define EUDARDPT (0x0E | 0x80)
158 #define EUDAWRPT (0x10 | 0x80)
159 
160 
161 /* Register bit definitions */
162 /* ESTAT */
163 #define INT (1 << 15)
164 #define FCIDLE (1 << 14)
165 #define RXBUSY (1 << 13)
166 #define CLKRDY (1 << 12)
167 #define PHYDPX (1 << 10)
168 #define PHYLNK (1 << 8)
169 
170 /* EIR */
171 #define CRYPTEN (1 << 15)
172 #define MODEXIF (1 << 14)
173 #define HASHIF (1 << 13)
174 #define AESIF (1 << 12)
175 #define LINKIF (1 << 11)
176 #define PKTIF (1 << 6)
177 #define DMAIF (1 << 5)
178 #define TXIF (1 << 3)
179 #define TXABTIF (1 << 2)
180 #define RXABTIF (1 << 1)
181 #define PCFULIF (1 << 0)
182 
183 /* ECON1 */
184 #define MODEXST (1 << 15)
185 #define HASHEN (1 << 14)
186 #define HASHOP (1 << 13)
187 #define HASHLST (1 << 12)
188 #define AESST (1 << 11)
189 #define AESOP1 (1 << 10)
190 #define AESOP0 (1 << 9)
191 #define PKTDEC (1 << 8)
192 #define FCOP1 (1 << 7)
193 #define FCOP0 (1 << 6)
194 #define DMAST (1 << 5)
195 #define DMACPY (1 << 4)
196 #define DMACSSD (1 << 3)
197 #define DMANOCS (1 << 2)
198 #define TXRTS (1 << 1)
199 #define RXEN (1 << 0)
200 
201 /* ETXSTAT */
202 #define LATECOL (1 << 10)
203 #define MAXCOL (1 << 9)
204 #define EXDEFER (1 << 8)
205 #define ETXSTATL_DEFER (1 << 7)
206 #define CRCBAD (1 << 4)
207 #define COLCNT_MASK 0xF
208 
209 /* ERXFCON */
210 #define HTEN (1 << 15)
211 #define MPEN (1 << 14)
212 #define NOTPM (1 << 12)
213 #define PMEN3 (1 << 11)
214 #define PMEN2 (1 << 10)
215 #define PMEN1 (1 << 9)
216 #define PMEN0 (1 << 8)
217 #define CRCEEN (1 << 7)
218 #define CRCEN (1 << 6)
219 #define RUNTEEN (1 << 5)
220 #define RUNTEN (1 << 4)
221 #define UCEN (1 << 3)
222 #define NOTMEEN (1 << 2)
223 #define MCEN (1 << 1)
224 #define BCEN (1 << 0)
225 
226 /* MACON1 */
227 #define LOOPBK (1 << 4)
228 #define RXPAUS (1 << 2)
229 #define PASSALL (1 << 1)
230 
231 /* MACON2 */
232 #define MACON2_DEFER (1 << 14)
233 #define BPEN (1 << 13)
234 #define NOBKOFF (1 << 12)
235 #define PADCFG2 (1 << 7)
236 #define PADCFG1 (1 << 6)
237 #define PADCFG0 (1 << 5)
238 #define TXCRCEN (1 << 4)
239 #define PHDREN (1 << 3)
240 #define HFRMEN (1 << 2)
241 #define MACON2_RSV1 (1 << 1)
242 #define FULDPX (1 << 0)
243 
244 /* MAIPG */
245 /* value of the high byte is given by the reserved bits,
246  * value of the low byte is recomended setting of the
247  * IPG parameter.
248  */
249 #define MAIPGH_VAL 0x0C
250 #define MAIPGL_VAL 0x12
251 
252 /* MIREGADRH */
253 #define MIREGADR_VAL (1 << 8)
254 
255 /* MIREGADRL */
256 #define PHREG_MASK 0x1F
257 
258 /* MICMD */
259 #define MIISCAN (1 << 1)
260 #define MIIRD (1 << 0)
261 
262 /* MISTAT */
263 #define NVALID (1 << 2)
264 #define SCAN (1 << 1)
265 #define BUSY (1 << 0)
266 
267 /* ECON2 */
268 #define ETHEN (1 << 15)
269 #define STRCH (1 << 14)
270 #define TXMAC (1 << 13)
271 #define SHA1MD5 (1 << 12)
272 #define COCON3 (1 << 11)
273 #define COCON2 (1 << 10)
274 #define COCON1 (1 << 9)
275 #define COCON0 (1 << 8)
276 #define AUTOFC (1 << 7)
277 #define TXRST (1 << 6)
278 #define RXRST (1 << 5)
279 #define ETHRST (1 << 4)
280 #define MODLEN1 (1 << 3)
281 #define MODLEN0 (1 << 2)
282 #define AESLEN1 (1 << 1)
283 #define AESLEN0 (1 << 0)
284 
285 /* EIE */
286 #define INTIE (1 << 15)
287 #define MODEXIE (1 << 14)
288 #define HASHIE (1 << 13)
289 #define AESIE (1 << 12)
290 #define LINKIE (1 << 11)
291 #define PKTIE (1 << 6)
292 #define DMAIE (1 << 5)
293 #define TXIE (1 << 3)
294 #define TXABTIE (1 << 2)
295 #define RXABTIE (1 << 1)
296 #define PCFULIE (1 << 0)
297 
298 /* EIDLED */
299 #define LACFG3 (1 << 15)
300 #define LACFG2 (1 << 14)
301 #define LACFG1 (1 << 13)
302 #define LACFG0 (1 << 12)
303 #define LBCFG3 (1 << 11)
304 #define LBCFG2 (1 << 10)
305 #define LBCFG1 (1 << 9)
306 #define LBCFG0 (1 << 8)
307 #define DEVID_SHIFT 5
308 #define DEVID_MASK (0x7 << DEVID_SHIFT)
309 #define REVID_SHIFT 0
310 #define REVID_MASK (0x1F << REVID_SHIFT)
311 
312 /* PHY registers */
313 #define PHCON1 0x00
314 #define PHSTAT1 0x01
315 #define PHANA 0x04
316 #define PHANLPA 0x05
317 #define PHANE 0x06
318 #define PHCON2 0x11
319 #define PHSTAT2 0x1B
320 #define PHSTAT3 0x1F
321 
322 /* PHCON1 */
323 #define PRST (1 << 15)
324 #define PLOOPBK (1 << 14)
325 #define SPD100 (1 << 13)
326 #define ANEN (1 << 12)
327 #define PSLEEP (1 << 11)
328 #define RENEG (1 << 9)
329 #define PFULDPX (1 << 8)
330 
331 /* PHSTAT1 */
332 #define FULL100 (1 << 14)
333 #define HALF100 (1 << 13)
334 #define FULL10 (1 << 12)
335 #define HALF10 (1 << 11)
336 #define ANDONE (1 << 5)
337 #define LRFAULT (1 << 4)
338 #define ANABLE (1 << 3)
339 #define LLSTAT (1 << 2)
340 #define EXTREGS (1 << 0)
341 
342 /* PHSTAT2 */
343 #define PLRITY (1 << 4)
344 
345 /* PHSTAT3 */
346 #define PHY3SPD100 (1 << 3)
347 #define PHY3DPX (1 << 4)
348 #define SPDDPX_SHIFT 2
349 #define SPDDPX_MASK (0x7 << SPDDPX_SHIFT)
350 
351 /* PHANA */
352 /* Default value for PHY initialization*/
353 #define PHANA_DEFAULT 0x05E1
354 
355 /* PHANE */
356 #define PDFLT (1 << 4)
357 #define LPARCD (1 << 1)
358 #define LPANABL (1 << 0)
359 
360 #define EUDAST_TEST_VAL 0x1234
361 
362 #define TSV_SIZE 7
363 
364 #define ENCX24J600_DEV_ID 0x1
365 
366 /* Configuration */
367 
368 /* Led is on when the link is present and driven low
369  * temporarily when packet is TX'd or RX'd
370  */
371 #define LED_A_SETTINGS 0xC
372 
373 /* Led is on if the link is in 100 Mbps mode */
374 #define LED_B_SETTINGS 0x8
375 
376 /* maximum ethernet frame length
377  * Currently not used as a limit anywhere
378  * (we're using the "huge frame enable" feature of
379  * enc424j600).
380  */
381 #define MAX_FRAMELEN 1518
382 
383 /* Size in bytes of the receive buffer in enc424j600.
384  * Must be word aligned (even).
385  */
386 #define RX_BUFFER_SIZE (15 * MAX_FRAMELEN)
387 
388 /* Start of the general purpose area in sram */
389 #define SRAM_GP_START 0x0
390 
391 /* SRAM size */
392 #define SRAM_SIZE 0x6000
393 
394 /* Start of the receive buffer */
395 #define ERXST_VAL (SRAM_SIZE - RX_BUFFER_SIZE)
396 
397 #define RSV_RXLONGEVDROPEV	16
398 #define RSV_CARRIEREV		18
399 #define RSV_CRCERROR		20
400 #define RSV_LENCHECKERR		21
401 #define RSV_LENOUTOFRANGE	22
402 #define RSV_RXOK		23
403 #define RSV_RXMULTICAST		24
404 #define RSV_RXBROADCAST		25
405 #define RSV_DRIBBLENIBBLE	26
406 #define RSV_RXCONTROLFRAME	27
407 #define RSV_RXPAUSEFRAME	28
408 #define RSV_RXUNKNOWNOPCODE	29
409 #define RSV_RXTYPEVLAN		30
410 
411 #define RSV_RUNTFILTERMATCH	31
412 #define RSV_NOTMEFILTERMATCH	32
413 #define RSV_HASHFILTERMATCH	33
414 #define RSV_MAGICPKTFILTERMATCH	34
415 #define RSV_PTRNMTCHFILTERMATCH	35
416 #define RSV_UNICASTFILTERMATCH	36
417 
418 #define RSV_SIZE		8
419 #define RSV_BITMASK(x)		(1 << ((x) - 16))
420 #define RSV_GETBIT(x, y)	(((x) & RSV_BITMASK(y)) ? 1 : 0)
421 
422 struct rsv {
423 	u16 next_packet;
424 	u16 len;
425 	u32 rxstat;
426 };
427 
428 /* Put RX buffer at 0 as suggested by the Errata datasheet */
429 
430 #define RXSTART_INIT		ERXST_VAL
431 #define RXEND_INIT		0x5FFF
432 
433 int regmap_encx24j600_spi_write(void *context, u8 reg, const u8 *data,
434 				size_t count);
435 int regmap_encx24j600_spi_read(void *context, u8 reg, u8 *data, size_t count);
436 
437 
438 #endif
439