1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /* drivers/net/ethernet/micrel/ks8851.h
3  *
4  * Copyright 2009 Simtec Electronics
5  *      Ben Dooks <ben@simtec.co.uk>
6  *
7  * KS8851 register definitions
8 */
9 
10 #ifndef __KS8851_H__
11 #define __KS8851_H__
12 
13 #include <linux/eeprom_93cx6.h>
14 
15 #define KS_CCR					0x08
16 #define CCR_LE					(1 << 10)   /* KSZ8851-16MLL */
17 #define CCR_EEPROM				(1 << 9)
18 #define CCR_SPI					(1 << 8)    /* KSZ8851SNL    */
19 #define CCR_8BIT				(1 << 7)    /* KSZ8851-16MLL */
20 #define CCR_16BIT				(1 << 6)    /* KSZ8851-16MLL */
21 #define CCR_32BIT				(1 << 5)    /* KSZ8851-16MLL */
22 #define CCR_SHARED				(1 << 4)    /* KSZ8851-16MLL */
23 #define CCR_48PIN				(1 << 1)    /* KSZ8851-16MLL */
24 #define CCR_32PIN				(1 << 0)    /* KSZ8851SNL    */
25 
26 /* MAC address registers */
27 #define KS_MAR(_m)				(0x14 - (_m))
28 #define KS_MARL					0x10
29 #define KS_MARM					0x12
30 #define KS_MARH					0x14
31 
32 #define KS_OBCR					0x20
33 #define OBCR_ODS_16mA				(1 << 6)
34 
35 #define KS_EEPCR				0x22
36 #define EEPCR_EESRWA				(1 << 5)
37 #define EEPCR_EESA				(1 << 4)
38 #define EEPCR_EESB				(1 << 3)
39 #define EEPCR_EEDO				(1 << 2)
40 #define EEPCR_EESCK				(1 << 1)
41 #define EEPCR_EECS				(1 << 0)
42 
43 #define KS_MBIR					0x24
44 #define MBIR_TXMBF				(1 << 12)
45 #define MBIR_TXMBFA				(1 << 11)
46 #define MBIR_RXMBF				(1 << 4)
47 #define MBIR_RXMBFA				(1 << 3)
48 
49 #define KS_GRR					0x26
50 #define GRR_QMU					(1 << 1)
51 #define GRR_GSR					(1 << 0)
52 
53 #define KS_WFCR					0x2A
54 #define WFCR_MPRXE				(1 << 7)
55 #define WFCR_WF3E				(1 << 3)
56 #define WFCR_WF2E				(1 << 2)
57 #define WFCR_WF1E				(1 << 1)
58 #define WFCR_WF0E				(1 << 0)
59 
60 #define KS_WF0CRC0				0x30
61 #define KS_WF0CRC1				0x32
62 #define KS_WF0BM0				0x34
63 #define KS_WF0BM1				0x36
64 #define KS_WF0BM2				0x38
65 #define KS_WF0BM3				0x3A
66 
67 #define KS_WF1CRC0				0x40
68 #define KS_WF1CRC1				0x42
69 #define KS_WF1BM0				0x44
70 #define KS_WF1BM1				0x46
71 #define KS_WF1BM2				0x48
72 #define KS_WF1BM3				0x4A
73 
74 #define KS_WF2CRC0				0x50
75 #define KS_WF2CRC1				0x52
76 #define KS_WF2BM0				0x54
77 #define KS_WF2BM1				0x56
78 #define KS_WF2BM2				0x58
79 #define KS_WF2BM3				0x5A
80 
81 #define KS_WF3CRC0				0x60
82 #define KS_WF3CRC1				0x62
83 #define KS_WF3BM0				0x64
84 #define KS_WF3BM1				0x66
85 #define KS_WF3BM2				0x68
86 #define KS_WF3BM3				0x6A
87 
88 #define KS_TXCR					0x70
89 #define TXCR_TCGICMP				(1 << 8)
90 #define TXCR_TCGUDP				(1 << 7)
91 #define TXCR_TCGTCP				(1 << 6)
92 #define TXCR_TCGIP				(1 << 5)
93 #define TXCR_FTXQ				(1 << 4)
94 #define TXCR_TXFCE				(1 << 3)
95 #define TXCR_TXPE				(1 << 2)
96 #define TXCR_TXCRC				(1 << 1)
97 #define TXCR_TXE				(1 << 0)
98 
99 #define KS_TXSR					0x72
100 #define TXSR_TXLC				(1 << 13)
101 #define TXSR_TXMC				(1 << 12)
102 #define TXSR_TXFID_MASK				(0x3f << 0)
103 #define TXSR_TXFID_SHIFT			(0)
104 #define TXSR_TXFID_GET(_v)			(((_v) >> 0) & 0x3f)
105 
106 #define KS_RXCR1				0x74
107 #define RXCR1_FRXQ				(1 << 15)
108 #define RXCR1_RXUDPFCC				(1 << 14)
109 #define RXCR1_RXTCPFCC				(1 << 13)
110 #define RXCR1_RXIPFCC				(1 << 12)
111 #define RXCR1_RXPAFMA				(1 << 11)
112 #define RXCR1_RXFCE				(1 << 10)
113 #define RXCR1_RXEFE				(1 << 9)
114 #define RXCR1_RXMAFMA				(1 << 8)
115 #define RXCR1_RXBE				(1 << 7)
116 #define RXCR1_RXME				(1 << 6)
117 #define RXCR1_RXUE				(1 << 5)
118 #define RXCR1_RXAE				(1 << 4)
119 #define RXCR1_RXINVF				(1 << 1)
120 #define RXCR1_RXE				(1 << 0)
121 
122 #define KS_RXCR2				0x76
123 #define RXCR2_SRDBL_MASK			(0x7 << 5)  /* KSZ8851SNL    */
124 #define RXCR2_SRDBL_SHIFT			(5)	    /* KSZ8851SNL    */
125 #define RXCR2_SRDBL_4B				(0x0 << 5)  /* KSZ8851SNL    */
126 #define RXCR2_SRDBL_8B				(0x1 << 5)  /* KSZ8851SNL    */
127 #define RXCR2_SRDBL_16B				(0x2 << 5)  /* KSZ8851SNL    */
128 #define RXCR2_SRDBL_32B				(0x3 << 5)  /* KSZ8851SNL    */
129 #define RXCR2_SRDBL_FRAME			(0x4 << 5)  /* KSZ8851SNL    */
130 #define RXCR2_IUFFP				(1 << 4)
131 #define RXCR2_RXIUFCEZ				(1 << 3)
132 #define RXCR2_UDPLFE				(1 << 2)
133 #define RXCR2_RXICMPFCC				(1 << 1)
134 #define RXCR2_RXSAF				(1 << 0)
135 
136 #define KS_TXMIR				0x78
137 
138 #define KS_RXFHSR				0x7C
139 #define RXFSHR_RXFV				(1 << 15)
140 #define RXFSHR_RXICMPFCS			(1 << 13)
141 #define RXFSHR_RXIPFCS				(1 << 12)
142 #define RXFSHR_RXTCPFCS				(1 << 11)
143 #define RXFSHR_RXUDPFCS				(1 << 10)
144 #define RXFSHR_RXBF				(1 << 7)
145 #define RXFSHR_RXMF				(1 << 6)
146 #define RXFSHR_RXUF				(1 << 5)
147 #define RXFSHR_RXMR				(1 << 4)
148 #define RXFSHR_RXFT				(1 << 3)
149 #define RXFSHR_RXFTL				(1 << 2)
150 #define RXFSHR_RXRF				(1 << 1)
151 #define RXFSHR_RXCE				(1 << 0)
152 
153 #define KS_RXFHBCR				0x7E
154 #define RXFHBCR_CNT_MASK			(0xfff << 0)
155 
156 #define KS_TXQCR				0x80
157 #define TXQCR_AETFE				(1 << 2)    /* KSZ8851SNL    */
158 #define TXQCR_TXQMAM				(1 << 1)
159 #define TXQCR_METFE				(1 << 0)
160 
161 #define KS_RXQCR				0x82
162 #define RXQCR_RXDTTS				(1 << 12)
163 #define RXQCR_RXDBCTS				(1 << 11)
164 #define RXQCR_RXFCTS				(1 << 10)
165 #define RXQCR_RXIPHTOE				(1 << 9)
166 #define RXQCR_RXDTTE				(1 << 7)
167 #define RXQCR_RXDBCTE				(1 << 6)
168 #define RXQCR_RXFCTE				(1 << 5)
169 #define RXQCR_ADRFE				(1 << 4)
170 #define RXQCR_SDA				(1 << 3)
171 #define RXQCR_RRXEF				(1 << 0)
172 
173 #define KS_TXFDPR				0x84
174 #define TXFDPR_TXFPAI				(1 << 14)
175 #define TXFDPR_TXFP_MASK			(0x7ff << 0)
176 #define TXFDPR_TXFP_SHIFT			(0)
177 
178 #define KS_RXFDPR				0x86
179 #define RXFDPR_RXFPAI				(1 << 14)
180 #define RXFDPR_WST				(1 << 12)   /* KSZ8851-16MLL */
181 #define RXFDPR_EMS				(1 << 11)   /* KSZ8851-16MLL */
182 #define RXFDPR_RXFP_MASK			(0x7ff << 0)
183 #define RXFDPR_RXFP_SHIFT			(0)
184 
185 #define KS_RXDTTR				0x8C
186 #define KS_RXDBCTR				0x8E
187 
188 #define KS_IER					0x90
189 #define KS_ISR					0x92
190 #define IRQ_LCI					(1 << 15)
191 #define IRQ_TXI					(1 << 14)
192 #define IRQ_RXI					(1 << 13)
193 #define IRQ_RXOI				(1 << 11)
194 #define IRQ_TXPSI				(1 << 9)
195 #define IRQ_RXPSI				(1 << 8)
196 #define IRQ_TXSAI				(1 << 6)
197 #define IRQ_RXWFDI				(1 << 5)
198 #define IRQ_RXMPDI				(1 << 4)
199 #define IRQ_LDI					(1 << 3)
200 #define IRQ_EDI					(1 << 2)
201 #define IRQ_SPIBEI				(1 << 1)    /* KSZ8851SNL    */
202 #define IRQ_DEDI				(1 << 0)
203 
204 #define KS_RXFCTR				0x9C
205 #define KS_RXFC					0x9D
206 #define RXFCTR_RXFC_MASK			(0xff << 8)
207 #define RXFCTR_RXFC_SHIFT			(8)
208 #define RXFCTR_RXFC_GET(_v)			(((_v) >> 8) & 0xff)
209 #define RXFCTR_RXFCT_MASK			(0xff << 0)
210 #define RXFCTR_RXFCT_SHIFT			(0)
211 
212 #define KS_TXNTFSR				0x9E
213 
214 #define KS_MAHTR0				0xA0
215 #define KS_MAHTR1				0xA2
216 #define KS_MAHTR2				0xA4
217 #define KS_MAHTR3				0xA6
218 
219 #define KS_FCLWR				0xB0
220 #define KS_FCHWR				0xB2
221 #define KS_FCOWR				0xB4
222 
223 #define KS_CIDER				0xC0
224 #define CIDER_ID				0x8870
225 #define CIDER_REV_MASK				(0x7 << 1)
226 #define CIDER_REV_SHIFT				(1)
227 #define CIDER_REV_GET(_v)			(((_v) >> 1) & 0x7)
228 
229 #define KS_CGCR					0xC6
230 
231 #define KS_IACR					0xC8
232 #define IACR_RDEN				(1 << 12)
233 #define IACR_TSEL_MASK				(0x3 << 10)
234 #define IACR_TSEL_SHIFT				(10)
235 #define IACR_TSEL_MIB				(0x3 << 10)
236 #define IACR_ADDR_MASK				(0x1f << 0)
237 #define IACR_ADDR_SHIFT				(0)
238 
239 #define KS_IADLR				0xD0
240 #define KS_IAHDR				0xD2
241 
242 #define KS_PMECR				0xD4
243 #define PMECR_PME_DELAY				(1 << 14)
244 #define PMECR_PME_POL				(1 << 12)
245 #define PMECR_WOL_WAKEUP			(1 << 11)
246 #define PMECR_WOL_MAGICPKT			(1 << 10)
247 #define PMECR_WOL_LINKUP			(1 << 9)
248 #define PMECR_WOL_ENERGY			(1 << 8)
249 #define PMECR_AUTO_WAKE_EN			(1 << 7)
250 #define PMECR_WAKEUP_NORMAL			(1 << 6)
251 #define PMECR_WKEVT_MASK			(0xf << 2)
252 #define PMECR_WKEVT_SHIFT			(2)
253 #define PMECR_WKEVT_GET(_v)			(((_v) >> 2) & 0xf)
254 #define PMECR_WKEVT_ENERGY			(0x1 << 2)
255 #define PMECR_WKEVT_LINK			(0x2 << 2)
256 #define PMECR_WKEVT_MAGICPKT			(0x4 << 2)
257 #define PMECR_WKEVT_FRAME			(0x8 << 2)
258 #define PMECR_PM_MASK				(0x3 << 0)
259 #define PMECR_PM_SHIFT				(0)
260 #define PMECR_PM_NORMAL				(0x0 << 0)
261 #define PMECR_PM_ENERGY				(0x1 << 0)
262 #define PMECR_PM_SOFTDOWN			(0x2 << 0)
263 #define PMECR_PM_POWERSAVE			(0x3 << 0)
264 
265 /* Standard MII PHY data */
266 #define KS_P1MBCR				0xE4
267 #define KS_P1MBSR				0xE6
268 #define KS_PHY1ILR				0xE8
269 #define KS_PHY1IHR				0xEA
270 #define KS_P1ANAR				0xEC
271 #define KS_P1ANLPR				0xEE
272 
273 #define KS_P1SCLMD				0xF4
274 
275 #define KS_P1CR					0xF6
276 #define P1CR_LEDOFF				(1 << 15)
277 #define P1CR_TXIDS				(1 << 14)
278 #define P1CR_RESTARTAN				(1 << 13)
279 #define P1CR_DISAUTOMDIX			(1 << 10)
280 #define P1CR_FORCEMDIX				(1 << 9)
281 #define P1CR_AUTONEGEN				(1 << 7)
282 #define P1CR_FORCE100				(1 << 6)
283 #define P1CR_FORCEFDX				(1 << 5)
284 #define P1CR_ADV_FLOW				(1 << 4)
285 #define P1CR_ADV_100BT_FDX			(1 << 3)
286 #define P1CR_ADV_100BT_HDX			(1 << 2)
287 #define P1CR_ADV_10BT_FDX			(1 << 1)
288 #define P1CR_ADV_10BT_HDX			(1 << 0)
289 
290 #define KS_P1SR					0xF8
291 #define P1SR_HP_MDIX				(1 << 15)
292 #define P1SR_REV_POL				(1 << 13)
293 #define P1SR_OP_100M				(1 << 10)
294 #define P1SR_OP_FDX				(1 << 9)
295 #define P1SR_OP_MDI				(1 << 7)
296 #define P1SR_AN_DONE				(1 << 6)
297 #define P1SR_LINK_GOOD				(1 << 5)
298 #define P1SR_PNTR_FLOW				(1 << 4)
299 #define P1SR_PNTR_100BT_FDX			(1 << 3)
300 #define P1SR_PNTR_100BT_HDX			(1 << 2)
301 #define P1SR_PNTR_10BT_FDX			(1 << 1)
302 #define P1SR_PNTR_10BT_HDX			(1 << 0)
303 
304 /* TX Frame control */
305 #define TXFR_TXIC				(1 << 15)
306 #define TXFR_TXFID_MASK				(0x3f << 0)
307 #define TXFR_TXFID_SHIFT			(0)
308 
309 /**
310  * struct ks8851_rxctrl - KS8851 driver rx control
311  * @mchash: Multicast hash-table data.
312  * @rxcr1: KS_RXCR1 register setting
313  * @rxcr2: KS_RXCR2 register setting
314  *
315  * Representation of the settings needs to control the receive filtering
316  * such as the multicast hash-filter and the receive register settings. This
317  * is used to make the job of working out if the receive settings change and
318  * then issuing the new settings to the worker that will send the necessary
319  * commands.
320  */
321 struct ks8851_rxctrl {
322 	u16	mchash[4];
323 	u16	rxcr1;
324 	u16	rxcr2;
325 };
326 
327 /**
328  * union ks8851_tx_hdr - tx header data
329  * @txb: The header as bytes
330  * @txw: The header as 16bit, little-endian words
331  *
332  * A dual representation of the tx header data to allow
333  * access to individual bytes, and to allow 16bit accesses
334  * with 16bit alignment.
335  */
336 union ks8851_tx_hdr {
337 	u8	txb[6];
338 	__le16	txw[3];
339 };
340 
341 /**
342  * struct ks8851_net - KS8851 driver private data
343  * @netdev: The network device we're bound to
344  * @statelock: Lock on this structure for tx list.
345  * @mii: The MII state information for the mii calls.
346  * @rxctrl: RX settings for @rxctrl_work.
347  * @rxctrl_work: Work queue for updating RX mode and multicast lists
348  * @txq: Queue of packets for transmission.
349  * @txh: Space for generating packet TX header in DMA-able data
350  * @rxd: Space for receiving SPI data, in DMA-able space.
351  * @txd: Space for transmitting SPI data, in DMA-able space.
352  * @msg_enable: The message flags controlling driver output (see ethtool).
353  * @fid: Incrementing frame id tag.
354  * @rc_ier: Cached copy of KS_IER.
355  * @rc_ccr: Cached copy of KS_CCR.
356  * @rc_rxqcr: Cached copy of KS_RXQCR.
357  * @eeprom: 93CX6 EEPROM state for accessing on-board EEPROM.
358  * @vdd_reg:	Optional regulator supplying the chip
359  * @vdd_io: Optional digital power supply for IO
360  * @gpio: Optional reset_n gpio
361  * @mii_bus: Pointer to MII bus structure
362  * @lock: Bus access lock callback
363  * @unlock: Bus access unlock callback
364  * @rdreg16: 16bit register read callback
365  * @wrreg16: 16bit register write callback
366  * @rdfifo: FIFO read callback
367  * @wrfifo: FIFO write callback
368  * @start_xmit: start_xmit() implementation callback
369  * @rx_skb: rx_skb() implementation callback
370  * @flush_tx_work: flush_tx_work() implementation callback
371  *
372  * The @statelock is used to protect information in the structure which may
373  * need to be accessed via several sources, such as the network driver layer
374  * or one of the work queues.
375  *
376  * We align the buffers we may use for rx/tx to ensure that if the SPI driver
377  * wants to DMA map them, it will not have any problems with data the driver
378  * modifies.
379  */
380 struct ks8851_net {
381 	struct net_device	*netdev;
382 	spinlock_t		statelock;
383 
384 	union ks8851_tx_hdr	txh ____cacheline_aligned;
385 	u8			rxd[8];
386 	u8			txd[8];
387 
388 	u32			msg_enable ____cacheline_aligned;
389 	u16			tx_space;
390 	u8			fid;
391 
392 	u16			rc_ier;
393 	u16			rc_rxqcr;
394 	u16			rc_ccr;
395 
396 	struct mii_if_info	mii;
397 	struct ks8851_rxctrl	rxctrl;
398 
399 	struct work_struct	rxctrl_work;
400 
401 	struct sk_buff_head	txq;
402 
403 	struct eeprom_93cx6	eeprom;
404 	struct regulator	*vdd_reg;
405 	struct regulator	*vdd_io;
406 	struct gpio_desc	*gpio;
407 	struct mii_bus		*mii_bus;
408 
409 	void			(*lock)(struct ks8851_net *ks,
410 					unsigned long *flags);
411 	void			(*unlock)(struct ks8851_net *ks,
412 					  unsigned long *flags);
413 	unsigned int		(*rdreg16)(struct ks8851_net *ks,
414 					   unsigned int reg);
415 	void			(*wrreg16)(struct ks8851_net *ks,
416 					   unsigned int reg, unsigned int val);
417 	void			(*rdfifo)(struct ks8851_net *ks, u8 *buff,
418 					  unsigned int len);
419 	void			(*wrfifo)(struct ks8851_net *ks,
420 					  struct sk_buff *txp, bool irq);
421 	netdev_tx_t		(*start_xmit)(struct sk_buff *skb,
422 					      struct net_device *dev);
423 	void			(*rx_skb)(struct ks8851_net *ks,
424 					  struct sk_buff *skb);
425 	void			(*flush_tx_work)(struct ks8851_net *ks);
426 };
427 
428 int ks8851_probe_common(struct net_device *netdev, struct device *dev,
429 			int msg_en);
430 void ks8851_remove_common(struct device *dev);
431 int ks8851_suspend(struct device *dev);
432 int ks8851_resume(struct device *dev);
433 
434 static __maybe_unused SIMPLE_DEV_PM_OPS(ks8851_pm_ops,
435 					ks8851_suspend, ks8851_resume);
436 
437 /**
438  * ks8851_done_tx - update and then free skbuff after transmitting
439  * @ks: The device state
440  * @txb: The buffer transmitted
441  */
ks8851_done_tx(struct ks8851_net * ks,struct sk_buff * txb)442 static void __maybe_unused ks8851_done_tx(struct ks8851_net *ks,
443 					  struct sk_buff *txb)
444 {
445 	struct net_device *dev = ks->netdev;
446 
447 	dev->stats.tx_bytes += txb->len;
448 	dev->stats.tx_packets++;
449 
450 	dev_kfree_skb(txb);
451 }
452 
453 #endif /* __KS8851_H__ */
454