xref: /linux/drivers/net/ethernet/cadence/macb.h (revision b8265621f4888af9494e1d685620871ec81bc33d)
1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Atmel MACB Ethernet Controller driver
4  *
5  * Copyright (C) 2004-2006 Atmel Corporation
6  */
7 #ifndef _MACB_H
8 #define _MACB_H
9 
10 #include <linux/phylink.h>
11 #include <linux/ptp_clock_kernel.h>
12 #include <linux/net_tstamp.h>
13 #include <linux/interrupt.h>
14 
15 #if defined(CONFIG_ARCH_DMA_ADDR_T_64BIT) || defined(CONFIG_MACB_USE_HWSTAMP)
16 #define MACB_EXT_DESC
17 #endif
18 
19 #define MACB_GREGS_NBR 16
20 #define MACB_GREGS_VERSION 2
21 #define MACB_MAX_QUEUES 8
22 
23 /* MACB register offsets */
24 #define MACB_NCR		0x0000 /* Network Control */
25 #define MACB_NCFGR		0x0004 /* Network Config */
26 #define MACB_NSR		0x0008 /* Network Status */
27 #define MACB_TAR		0x000c /* AT91RM9200 only */
28 #define MACB_TCR		0x0010 /* AT91RM9200 only */
29 #define MACB_TSR		0x0014 /* Transmit Status */
30 #define MACB_RBQP		0x0018 /* RX Q Base Address */
31 #define MACB_TBQP		0x001c /* TX Q Base Address */
32 #define MACB_RSR		0x0020 /* Receive Status */
33 #define MACB_ISR		0x0024 /* Interrupt Status */
34 #define MACB_IER		0x0028 /* Interrupt Enable */
35 #define MACB_IDR		0x002c /* Interrupt Disable */
36 #define MACB_IMR		0x0030 /* Interrupt Mask */
37 #define MACB_MAN		0x0034 /* PHY Maintenance */
38 #define MACB_PTR		0x0038
39 #define MACB_PFR		0x003c
40 #define MACB_FTO		0x0040
41 #define MACB_SCF		0x0044
42 #define MACB_MCF		0x0048
43 #define MACB_FRO		0x004c
44 #define MACB_FCSE		0x0050
45 #define MACB_ALE		0x0054
46 #define MACB_DTF		0x0058
47 #define MACB_LCOL		0x005c
48 #define MACB_EXCOL		0x0060
49 #define MACB_TUND		0x0064
50 #define MACB_CSE		0x0068
51 #define MACB_RRE		0x006c
52 #define MACB_ROVR		0x0070
53 #define MACB_RSE		0x0074
54 #define MACB_ELE		0x0078
55 #define MACB_RJA		0x007c
56 #define MACB_USF		0x0080
57 #define MACB_STE		0x0084
58 #define MACB_RLE		0x0088
59 #define MACB_TPF		0x008c
60 #define MACB_HRB		0x0090
61 #define MACB_HRT		0x0094
62 #define MACB_SA1B		0x0098
63 #define MACB_SA1T		0x009c
64 #define MACB_SA2B		0x00a0
65 #define MACB_SA2T		0x00a4
66 #define MACB_SA3B		0x00a8
67 #define MACB_SA3T		0x00ac
68 #define MACB_SA4B		0x00b0
69 #define MACB_SA4T		0x00b4
70 #define MACB_TID		0x00b8
71 #define MACB_TPQ		0x00bc
72 #define MACB_USRIO		0x00c0
73 #define MACB_WOL		0x00c4
74 #define MACB_MID		0x00fc
75 #define MACB_TBQPH		0x04C8
76 #define MACB_RBQPH		0x04D4
77 
78 /* GEM register offsets. */
79 #define GEM_NCFGR		0x0004 /* Network Config */
80 #define GEM_USRIO		0x000c /* User IO */
81 #define GEM_DMACFG		0x0010 /* DMA Configuration */
82 #define GEM_JML			0x0048 /* Jumbo Max Length */
83 #define GEM_HRB			0x0080 /* Hash Bottom */
84 #define GEM_HRT			0x0084 /* Hash Top */
85 #define GEM_SA1B		0x0088 /* Specific1 Bottom */
86 #define GEM_SA1T		0x008C /* Specific1 Top */
87 #define GEM_SA2B		0x0090 /* Specific2 Bottom */
88 #define GEM_SA2T		0x0094 /* Specific2 Top */
89 #define GEM_SA3B		0x0098 /* Specific3 Bottom */
90 #define GEM_SA3T		0x009C /* Specific3 Top */
91 #define GEM_SA4B		0x00A0 /* Specific4 Bottom */
92 #define GEM_SA4T		0x00A4 /* Specific4 Top */
93 #define GEM_WOL			0x00b8 /* Wake on LAN */
94 #define GEM_EFTSH		0x00e8 /* PTP Event Frame Transmitted Seconds Register 47:32 */
95 #define GEM_EFRSH		0x00ec /* PTP Event Frame Received Seconds Register 47:32 */
96 #define GEM_PEFTSH		0x00f0 /* PTP Peer Event Frame Transmitted Seconds Register 47:32 */
97 #define GEM_PEFRSH		0x00f4 /* PTP Peer Event Frame Received Seconds Register 47:32 */
98 #define GEM_OTX			0x0100 /* Octets transmitted */
99 #define GEM_OCTTXL		0x0100 /* Octets transmitted [31:0] */
100 #define GEM_OCTTXH		0x0104 /* Octets transmitted [47:32] */
101 #define GEM_TXCNT		0x0108 /* Frames Transmitted counter */
102 #define GEM_TXBCCNT		0x010c /* Broadcast Frames counter */
103 #define GEM_TXMCCNT		0x0110 /* Multicast Frames counter */
104 #define GEM_TXPAUSECNT		0x0114 /* Pause Frames Transmitted Counter */
105 #define GEM_TX64CNT		0x0118 /* 64 byte Frames TX counter */
106 #define GEM_TX65CNT		0x011c /* 65-127 byte Frames TX counter */
107 #define GEM_TX128CNT		0x0120 /* 128-255 byte Frames TX counter */
108 #define GEM_TX256CNT		0x0124 /* 256-511 byte Frames TX counter */
109 #define GEM_TX512CNT		0x0128 /* 512-1023 byte Frames TX counter */
110 #define GEM_TX1024CNT		0x012c /* 1024-1518 byte Frames TX counter */
111 #define GEM_TX1519CNT		0x0130 /* 1519+ byte Frames TX counter */
112 #define GEM_TXURUNCNT		0x0134 /* TX under run error counter */
113 #define GEM_SNGLCOLLCNT		0x0138 /* Single Collision Frame Counter */
114 #define GEM_MULTICOLLCNT	0x013c /* Multiple Collision Frame Counter */
115 #define GEM_EXCESSCOLLCNT	0x0140 /* Excessive Collision Frame Counter */
116 #define GEM_LATECOLLCNT		0x0144 /* Late Collision Frame Counter */
117 #define GEM_TXDEFERCNT		0x0148 /* Deferred Transmission Frame Counter */
118 #define GEM_TXCSENSECNT		0x014c /* Carrier Sense Error Counter */
119 #define GEM_ORX			0x0150 /* Octets received */
120 #define GEM_OCTRXL		0x0150 /* Octets received [31:0] */
121 #define GEM_OCTRXH		0x0154 /* Octets received [47:32] */
122 #define GEM_RXCNT		0x0158 /* Frames Received Counter */
123 #define GEM_RXBROADCNT		0x015c /* Broadcast Frames Received Counter */
124 #define GEM_RXMULTICNT		0x0160 /* Multicast Frames Received Counter */
125 #define GEM_RXPAUSECNT		0x0164 /* Pause Frames Received Counter */
126 #define GEM_RX64CNT		0x0168 /* 64 byte Frames RX Counter */
127 #define GEM_RX65CNT		0x016c /* 65-127 byte Frames RX Counter */
128 #define GEM_RX128CNT		0x0170 /* 128-255 byte Frames RX Counter */
129 #define GEM_RX256CNT		0x0174 /* 256-511 byte Frames RX Counter */
130 #define GEM_RX512CNT		0x0178 /* 512-1023 byte Frames RX Counter */
131 #define GEM_RX1024CNT		0x017c /* 1024-1518 byte Frames RX Counter */
132 #define GEM_RX1519CNT		0x0180 /* 1519+ byte Frames RX Counter */
133 #define GEM_RXUNDRCNT		0x0184 /* Undersize Frames Received Counter */
134 #define GEM_RXOVRCNT		0x0188 /* Oversize Frames Received Counter */
135 #define GEM_RXJABCNT		0x018c /* Jabbers Received Counter */
136 #define GEM_RXFCSCNT		0x0190 /* Frame Check Sequence Error Counter */
137 #define GEM_RXLENGTHCNT		0x0194 /* Length Field Error Counter */
138 #define GEM_RXSYMBCNT		0x0198 /* Symbol Error Counter */
139 #define GEM_RXALIGNCNT		0x019c /* Alignment Error Counter */
140 #define GEM_RXRESERRCNT		0x01a0 /* Receive Resource Error Counter */
141 #define GEM_RXORCNT		0x01a4 /* Receive Overrun Counter */
142 #define GEM_RXIPCCNT		0x01a8 /* IP header Checksum Error Counter */
143 #define GEM_RXTCPCCNT		0x01ac /* TCP Checksum Error Counter */
144 #define GEM_RXUDPCCNT		0x01b0 /* UDP Checksum Error Counter */
145 #define GEM_TISUBN		0x01bc /* 1588 Timer Increment Sub-ns */
146 #define GEM_TSH			0x01c0 /* 1588 Timer Seconds High */
147 #define GEM_TSL			0x01d0 /* 1588 Timer Seconds Low */
148 #define GEM_TN			0x01d4 /* 1588 Timer Nanoseconds */
149 #define GEM_TA			0x01d8 /* 1588 Timer Adjust */
150 #define GEM_TI			0x01dc /* 1588 Timer Increment */
151 #define GEM_EFTSL		0x01e0 /* PTP Event Frame Tx Seconds Low */
152 #define GEM_EFTN		0x01e4 /* PTP Event Frame Tx Nanoseconds */
153 #define GEM_EFRSL		0x01e8 /* PTP Event Frame Rx Seconds Low */
154 #define GEM_EFRN		0x01ec /* PTP Event Frame Rx Nanoseconds */
155 #define GEM_PEFTSL		0x01f0 /* PTP Peer Event Frame Tx Secs Low */
156 #define GEM_PEFTN		0x01f4 /* PTP Peer Event Frame Tx Ns */
157 #define GEM_PEFRSL		0x01f8 /* PTP Peer Event Frame Rx Sec Low */
158 #define GEM_PEFRN		0x01fc /* PTP Peer Event Frame Rx Ns */
159 #define GEM_DCFG1		0x0280 /* Design Config 1 */
160 #define GEM_DCFG2		0x0284 /* Design Config 2 */
161 #define GEM_DCFG3		0x0288 /* Design Config 3 */
162 #define GEM_DCFG4		0x028c /* Design Config 4 */
163 #define GEM_DCFG5		0x0290 /* Design Config 5 */
164 #define GEM_DCFG6		0x0294 /* Design Config 6 */
165 #define GEM_DCFG7		0x0298 /* Design Config 7 */
166 #define GEM_DCFG8		0x029C /* Design Config 8 */
167 #define GEM_DCFG10		0x02A4 /* Design Config 10 */
168 
169 #define GEM_TXBDCTRL	0x04cc /* TX Buffer Descriptor control register */
170 #define GEM_RXBDCTRL	0x04d0 /* RX Buffer Descriptor control register */
171 
172 /* Screener Type 2 match registers */
173 #define GEM_SCRT2		0x540
174 
175 /* EtherType registers */
176 #define GEM_ETHT		0x06E0
177 
178 /* Type 2 compare registers */
179 #define GEM_T2CMPW0		0x0700
180 #define GEM_T2CMPW1		0x0704
181 #define T2CMP_OFST(t2idx)	(t2idx * 2)
182 
183 /* type 2 compare registers
184  * each location requires 3 compare regs
185  */
186 #define GEM_IP4SRC_CMP(idx)		(idx * 3)
187 #define GEM_IP4DST_CMP(idx)		(idx * 3 + 1)
188 #define GEM_PORT_CMP(idx)		(idx * 3 + 2)
189 
190 /* Which screening type 2 EtherType register will be used (0 - 7) */
191 #define SCRT2_ETHT		0
192 
193 #define GEM_ISR(hw_q)		(0x0400 + ((hw_q) << 2))
194 #define GEM_TBQP(hw_q)		(0x0440 + ((hw_q) << 2))
195 #define GEM_TBQPH(hw_q)		(0x04C8)
196 #define GEM_RBQP(hw_q)		(0x0480 + ((hw_q) << 2))
197 #define GEM_RBQS(hw_q)		(0x04A0 + ((hw_q) << 2))
198 #define GEM_RBQPH(hw_q)		(0x04D4)
199 #define GEM_IER(hw_q)		(0x0600 + ((hw_q) << 2))
200 #define GEM_IDR(hw_q)		(0x0620 + ((hw_q) << 2))
201 #define GEM_IMR(hw_q)		(0x0640 + ((hw_q) << 2))
202 
203 /* Bitfields in NCR */
204 #define MACB_LB_OFFSET		0 /* reserved */
205 #define MACB_LB_SIZE		1
206 #define MACB_LLB_OFFSET		1 /* Loop back local */
207 #define MACB_LLB_SIZE		1
208 #define MACB_RE_OFFSET		2 /* Receive enable */
209 #define MACB_RE_SIZE		1
210 #define MACB_TE_OFFSET		3 /* Transmit enable */
211 #define MACB_TE_SIZE		1
212 #define MACB_MPE_OFFSET		4 /* Management port enable */
213 #define MACB_MPE_SIZE		1
214 #define MACB_CLRSTAT_OFFSET	5 /* Clear stats regs */
215 #define MACB_CLRSTAT_SIZE	1
216 #define MACB_INCSTAT_OFFSET	6 /* Incremental stats regs */
217 #define MACB_INCSTAT_SIZE	1
218 #define MACB_WESTAT_OFFSET	7 /* Write enable stats regs */
219 #define MACB_WESTAT_SIZE	1
220 #define MACB_BP_OFFSET		8 /* Back pressure */
221 #define MACB_BP_SIZE		1
222 #define MACB_TSTART_OFFSET	9 /* Start transmission */
223 #define MACB_TSTART_SIZE	1
224 #define MACB_THALT_OFFSET	10 /* Transmit halt */
225 #define MACB_THALT_SIZE		1
226 #define MACB_NCR_TPF_OFFSET	11 /* Transmit pause frame */
227 #define MACB_NCR_TPF_SIZE	1
228 #define MACB_TZQ_OFFSET		12 /* Transmit zero quantum pause frame */
229 #define MACB_TZQ_SIZE		1
230 #define MACB_SRTSM_OFFSET	15
231 #define MACB_OSSMODE_OFFSET 24 /* Enable One Step Synchro Mode */
232 #define MACB_OSSMODE_SIZE	1
233 
234 /* Bitfields in NCFGR */
235 #define MACB_SPD_OFFSET		0 /* Speed */
236 #define MACB_SPD_SIZE		1
237 #define MACB_FD_OFFSET		1 /* Full duplex */
238 #define MACB_FD_SIZE		1
239 #define MACB_BIT_RATE_OFFSET	2 /* Discard non-VLAN frames */
240 #define MACB_BIT_RATE_SIZE	1
241 #define MACB_JFRAME_OFFSET	3 /* reserved */
242 #define MACB_JFRAME_SIZE	1
243 #define MACB_CAF_OFFSET		4 /* Copy all frames */
244 #define MACB_CAF_SIZE		1
245 #define MACB_NBC_OFFSET		5 /* No broadcast */
246 #define MACB_NBC_SIZE		1
247 #define MACB_NCFGR_MTI_OFFSET	6 /* Multicast hash enable */
248 #define MACB_NCFGR_MTI_SIZE	1
249 #define MACB_UNI_OFFSET		7 /* Unicast hash enable */
250 #define MACB_UNI_SIZE		1
251 #define MACB_BIG_OFFSET		8 /* Receive 1536 byte frames */
252 #define MACB_BIG_SIZE		1
253 #define MACB_EAE_OFFSET		9 /* External address match enable */
254 #define MACB_EAE_SIZE		1
255 #define MACB_CLK_OFFSET		10
256 #define MACB_CLK_SIZE		2
257 #define MACB_RTY_OFFSET		12 /* Retry test */
258 #define MACB_RTY_SIZE		1
259 #define MACB_PAE_OFFSET		13 /* Pause enable */
260 #define MACB_PAE_SIZE		1
261 #define MACB_RM9200_RMII_OFFSET	13 /* AT91RM9200 only */
262 #define MACB_RM9200_RMII_SIZE	1  /* AT91RM9200 only */
263 #define MACB_RBOF_OFFSET	14 /* Receive buffer offset */
264 #define MACB_RBOF_SIZE		2
265 #define MACB_RLCE_OFFSET	16 /* Length field error frame discard */
266 #define MACB_RLCE_SIZE		1
267 #define MACB_DRFCS_OFFSET	17 /* FCS remove */
268 #define MACB_DRFCS_SIZE		1
269 #define MACB_EFRHD_OFFSET	18
270 #define MACB_EFRHD_SIZE		1
271 #define MACB_IRXFCS_OFFSET	19
272 #define MACB_IRXFCS_SIZE	1
273 
274 /* GEM specific NCFGR bitfields. */
275 #define GEM_GBE_OFFSET		10 /* Gigabit mode enable */
276 #define GEM_GBE_SIZE		1
277 #define GEM_PCSSEL_OFFSET	11
278 #define GEM_PCSSEL_SIZE		1
279 #define GEM_CLK_OFFSET		18 /* MDC clock division */
280 #define GEM_CLK_SIZE		3
281 #define GEM_DBW_OFFSET		21 /* Data bus width */
282 #define GEM_DBW_SIZE		2
283 #define GEM_RXCOEN_OFFSET	24
284 #define GEM_RXCOEN_SIZE		1
285 #define GEM_SGMIIEN_OFFSET	27
286 #define GEM_SGMIIEN_SIZE	1
287 
288 
289 /* Constants for data bus width. */
290 #define GEM_DBW32		0 /* 32 bit AMBA AHB data bus width */
291 #define GEM_DBW64		1 /* 64 bit AMBA AHB data bus width */
292 #define GEM_DBW128		2 /* 128 bit AMBA AHB data bus width */
293 
294 /* Bitfields in DMACFG. */
295 #define GEM_FBLDO_OFFSET	0 /* fixed burst length for DMA */
296 #define GEM_FBLDO_SIZE		5
297 #define GEM_ENDIA_DESC_OFFSET	6 /* endian swap mode for management descriptor access */
298 #define GEM_ENDIA_DESC_SIZE	1
299 #define GEM_ENDIA_PKT_OFFSET	7 /* endian swap mode for packet data access */
300 #define GEM_ENDIA_PKT_SIZE	1
301 #define GEM_RXBMS_OFFSET	8 /* RX packet buffer memory size select */
302 #define GEM_RXBMS_SIZE		2
303 #define GEM_TXPBMS_OFFSET	10 /* TX packet buffer memory size select */
304 #define GEM_TXPBMS_SIZE		1
305 #define GEM_TXCOEN_OFFSET	11 /* TX IP/TCP/UDP checksum gen offload */
306 #define GEM_TXCOEN_SIZE		1
307 #define GEM_RXBS_OFFSET		16 /* DMA receive buffer size */
308 #define GEM_RXBS_SIZE		8
309 #define GEM_DDRP_OFFSET		24 /* disc_when_no_ahb */
310 #define GEM_DDRP_SIZE		1
311 #define GEM_RXEXT_OFFSET	28 /* RX extended Buffer Descriptor mode */
312 #define GEM_RXEXT_SIZE		1
313 #define GEM_TXEXT_OFFSET	29 /* TX extended Buffer Descriptor mode */
314 #define GEM_TXEXT_SIZE		1
315 #define GEM_ADDR64_OFFSET	30 /* Address bus width - 64b or 32b */
316 #define GEM_ADDR64_SIZE		1
317 
318 
319 /* Bitfields in NSR */
320 #define MACB_NSR_LINK_OFFSET	0 /* pcs_link_state */
321 #define MACB_NSR_LINK_SIZE	1
322 #define MACB_MDIO_OFFSET	1 /* status of the mdio_in pin */
323 #define MACB_MDIO_SIZE		1
324 #define MACB_IDLE_OFFSET	2 /* The PHY management logic is idle */
325 #define MACB_IDLE_SIZE		1
326 
327 /* Bitfields in TSR */
328 #define MACB_UBR_OFFSET		0 /* Used bit read */
329 #define MACB_UBR_SIZE		1
330 #define MACB_COL_OFFSET		1 /* Collision occurred */
331 #define MACB_COL_SIZE		1
332 #define MACB_TSR_RLE_OFFSET	2 /* Retry limit exceeded */
333 #define MACB_TSR_RLE_SIZE	1
334 #define MACB_TGO_OFFSET		3 /* Transmit go */
335 #define MACB_TGO_SIZE		1
336 #define MACB_BEX_OFFSET		4 /* TX frame corruption due to AHB error */
337 #define MACB_BEX_SIZE		1
338 #define MACB_RM9200_BNQ_OFFSET	4 /* AT91RM9200 only */
339 #define MACB_RM9200_BNQ_SIZE	1 /* AT91RM9200 only */
340 #define MACB_COMP_OFFSET	5 /* Trnasmit complete */
341 #define MACB_COMP_SIZE		1
342 #define MACB_UND_OFFSET		6 /* Trnasmit under run */
343 #define MACB_UND_SIZE		1
344 
345 /* Bitfields in RSR */
346 #define MACB_BNA_OFFSET		0 /* Buffer not available */
347 #define MACB_BNA_SIZE		1
348 #define MACB_REC_OFFSET		1 /* Frame received */
349 #define MACB_REC_SIZE		1
350 #define MACB_OVR_OFFSET		2 /* Receive overrun */
351 #define MACB_OVR_SIZE		1
352 
353 /* Bitfields in ISR/IER/IDR/IMR */
354 #define MACB_MFD_OFFSET		0 /* Management frame sent */
355 #define MACB_MFD_SIZE		1
356 #define MACB_RCOMP_OFFSET	1 /* Receive complete */
357 #define MACB_RCOMP_SIZE		1
358 #define MACB_RXUBR_OFFSET	2 /* RX used bit read */
359 #define MACB_RXUBR_SIZE		1
360 #define MACB_TXUBR_OFFSET	3 /* TX used bit read */
361 #define MACB_TXUBR_SIZE		1
362 #define MACB_ISR_TUND_OFFSET	4 /* Enable TX buffer under run interrupt */
363 #define MACB_ISR_TUND_SIZE	1
364 #define MACB_ISR_RLE_OFFSET	5 /* EN retry exceeded/late coll interrupt */
365 #define MACB_ISR_RLE_SIZE	1
366 #define MACB_TXERR_OFFSET	6 /* EN TX frame corrupt from error interrupt */
367 #define MACB_TXERR_SIZE		1
368 #define MACB_TCOMP_OFFSET	7 /* Enable transmit complete interrupt */
369 #define MACB_TCOMP_SIZE		1
370 #define MACB_ISR_LINK_OFFSET	9 /* Enable link change interrupt */
371 #define MACB_ISR_LINK_SIZE	1
372 #define MACB_ISR_ROVR_OFFSET	10 /* Enable receive overrun interrupt */
373 #define MACB_ISR_ROVR_SIZE	1
374 #define MACB_HRESP_OFFSET	11 /* Enable hrsep not OK interrupt */
375 #define MACB_HRESP_SIZE		1
376 #define MACB_PFR_OFFSET		12 /* Enable pause frame w/ quantum interrupt */
377 #define MACB_PFR_SIZE		1
378 #define MACB_PTZ_OFFSET		13 /* Enable pause time zero interrupt */
379 #define MACB_PTZ_SIZE		1
380 #define MACB_WOL_OFFSET		14 /* Enable wake-on-lan interrupt */
381 #define MACB_WOL_SIZE		1
382 #define MACB_DRQFR_OFFSET	18 /* PTP Delay Request Frame Received */
383 #define MACB_DRQFR_SIZE		1
384 #define MACB_SFR_OFFSET		19 /* PTP Sync Frame Received */
385 #define MACB_SFR_SIZE		1
386 #define MACB_DRQFT_OFFSET	20 /* PTP Delay Request Frame Transmitted */
387 #define MACB_DRQFT_SIZE		1
388 #define MACB_SFT_OFFSET		21 /* PTP Sync Frame Transmitted */
389 #define MACB_SFT_SIZE		1
390 #define MACB_PDRQFR_OFFSET	22 /* PDelay Request Frame Received */
391 #define MACB_PDRQFR_SIZE	1
392 #define MACB_PDRSFR_OFFSET	23 /* PDelay Response Frame Received */
393 #define MACB_PDRSFR_SIZE	1
394 #define MACB_PDRQFT_OFFSET	24 /* PDelay Request Frame Transmitted */
395 #define MACB_PDRQFT_SIZE	1
396 #define MACB_PDRSFT_OFFSET	25 /* PDelay Response Frame Transmitted */
397 #define MACB_PDRSFT_SIZE	1
398 #define MACB_SRI_OFFSET		26 /* TSU Seconds Register Increment */
399 #define MACB_SRI_SIZE		1
400 #define GEM_WOL_OFFSET		28 /* Enable wake-on-lan interrupt */
401 #define GEM_WOL_SIZE		1
402 
403 /* Timer increment fields */
404 #define MACB_TI_CNS_OFFSET	0
405 #define MACB_TI_CNS_SIZE	8
406 #define MACB_TI_ACNS_OFFSET	8
407 #define MACB_TI_ACNS_SIZE	8
408 #define MACB_TI_NIT_OFFSET	16
409 #define MACB_TI_NIT_SIZE	8
410 
411 /* Bitfields in MAN */
412 #define MACB_DATA_OFFSET	0 /* data */
413 #define MACB_DATA_SIZE		16
414 #define MACB_CODE_OFFSET	16 /* Must be written to 10 */
415 #define MACB_CODE_SIZE		2
416 #define MACB_REGA_OFFSET	18 /* Register address */
417 #define MACB_REGA_SIZE		5
418 #define MACB_PHYA_OFFSET	23 /* PHY address */
419 #define MACB_PHYA_SIZE		5
420 #define MACB_RW_OFFSET		28 /* Operation. 10 is read. 01 is write. */
421 #define MACB_RW_SIZE		2
422 #define MACB_SOF_OFFSET		30 /* Must be written to 1 for Clause 22 */
423 #define MACB_SOF_SIZE		2
424 
425 /* Bitfields in USRIO (AVR32) */
426 #define MACB_MII_OFFSET				0
427 #define MACB_MII_SIZE				1
428 #define MACB_EAM_OFFSET				1
429 #define MACB_EAM_SIZE				1
430 #define MACB_TX_PAUSE_OFFSET			2
431 #define MACB_TX_PAUSE_SIZE			1
432 #define MACB_TX_PAUSE_ZERO_OFFSET		3
433 #define MACB_TX_PAUSE_ZERO_SIZE			1
434 
435 /* Bitfields in USRIO (AT91) */
436 #define MACB_RMII_OFFSET			0
437 #define MACB_RMII_SIZE				1
438 #define GEM_RGMII_OFFSET			0 /* GEM gigabit mode */
439 #define GEM_RGMII_SIZE				1
440 #define MACB_CLKEN_OFFSET			1
441 #define MACB_CLKEN_SIZE				1
442 
443 /* Bitfields in WOL */
444 #define MACB_IP_OFFSET				0
445 #define MACB_IP_SIZE				16
446 #define MACB_MAG_OFFSET				16
447 #define MACB_MAG_SIZE				1
448 #define MACB_ARP_OFFSET				17
449 #define MACB_ARP_SIZE				1
450 #define MACB_SA1_OFFSET				18
451 #define MACB_SA1_SIZE				1
452 #define MACB_WOL_MTI_OFFSET			19
453 #define MACB_WOL_MTI_SIZE			1
454 
455 /* Bitfields in MID */
456 #define MACB_IDNUM_OFFSET			16
457 #define MACB_IDNUM_SIZE				12
458 #define MACB_REV_OFFSET				0
459 #define MACB_REV_SIZE				16
460 
461 /* Bitfields in DCFG1. */
462 #define GEM_IRQCOR_OFFSET			23
463 #define GEM_IRQCOR_SIZE				1
464 #define GEM_DBWDEF_OFFSET			25
465 #define GEM_DBWDEF_SIZE				3
466 
467 /* Bitfields in DCFG2. */
468 #define GEM_RX_PKT_BUFF_OFFSET			20
469 #define GEM_RX_PKT_BUFF_SIZE			1
470 #define GEM_TX_PKT_BUFF_OFFSET			21
471 #define GEM_TX_PKT_BUFF_SIZE			1
472 
473 
474 /* Bitfields in DCFG5. */
475 #define GEM_TSU_OFFSET				8
476 #define GEM_TSU_SIZE				1
477 
478 /* Bitfields in DCFG6. */
479 #define GEM_PBUF_LSO_OFFSET			27
480 #define GEM_PBUF_LSO_SIZE			1
481 #define GEM_DAW64_OFFSET			23
482 #define GEM_DAW64_SIZE				1
483 
484 /* Bitfields in DCFG8. */
485 #define GEM_T1SCR_OFFSET			24
486 #define GEM_T1SCR_SIZE				8
487 #define GEM_T2SCR_OFFSET			16
488 #define GEM_T2SCR_SIZE				8
489 #define GEM_SCR2ETH_OFFSET			8
490 #define GEM_SCR2ETH_SIZE			8
491 #define GEM_SCR2CMP_OFFSET			0
492 #define GEM_SCR2CMP_SIZE			8
493 
494 /* Bitfields in DCFG10 */
495 #define GEM_TXBD_RDBUFF_OFFSET			12
496 #define GEM_TXBD_RDBUFF_SIZE			4
497 #define GEM_RXBD_RDBUFF_OFFSET			8
498 #define GEM_RXBD_RDBUFF_SIZE			4
499 
500 /* Bitfields in TISUBN */
501 #define GEM_SUBNSINCR_OFFSET			0
502 #define GEM_SUBNSINCRL_OFFSET			24
503 #define GEM_SUBNSINCRL_SIZE			8
504 #define GEM_SUBNSINCRH_OFFSET			0
505 #define GEM_SUBNSINCRH_SIZE			16
506 #define GEM_SUBNSINCR_SIZE			24
507 
508 /* Bitfields in TI */
509 #define GEM_NSINCR_OFFSET			0
510 #define GEM_NSINCR_SIZE				8
511 
512 /* Bitfields in TSH */
513 #define GEM_TSH_OFFSET				0 /* TSU timer value (s). MSB [47:32] of seconds timer count */
514 #define GEM_TSH_SIZE				16
515 
516 /* Bitfields in TSL */
517 #define GEM_TSL_OFFSET				0 /* TSU timer value (s). LSB [31:0] of seconds timer count */
518 #define GEM_TSL_SIZE				32
519 
520 /* Bitfields in TN */
521 #define GEM_TN_OFFSET				0 /* TSU timer value (ns) */
522 #define GEM_TN_SIZE					30
523 
524 /* Bitfields in TXBDCTRL */
525 #define GEM_TXTSMODE_OFFSET			4 /* TX Descriptor Timestamp Insertion mode */
526 #define GEM_TXTSMODE_SIZE			2
527 
528 /* Bitfields in RXBDCTRL */
529 #define GEM_RXTSMODE_OFFSET			4 /* RX Descriptor Timestamp Insertion mode */
530 #define GEM_RXTSMODE_SIZE			2
531 
532 /* Bitfields in SCRT2 */
533 #define GEM_QUEUE_OFFSET			0 /* Queue Number */
534 #define GEM_QUEUE_SIZE				4
535 #define GEM_VLANPR_OFFSET			4 /* VLAN Priority */
536 #define GEM_VLANPR_SIZE				3
537 #define GEM_VLANEN_OFFSET			8 /* VLAN Enable */
538 #define GEM_VLANEN_SIZE				1
539 #define GEM_ETHT2IDX_OFFSET			9 /* Index to screener type 2 EtherType register */
540 #define GEM_ETHT2IDX_SIZE			3
541 #define GEM_ETHTEN_OFFSET			12 /* EtherType Enable */
542 #define GEM_ETHTEN_SIZE				1
543 #define GEM_CMPA_OFFSET				13 /* Compare A - Index to screener type 2 Compare register */
544 #define GEM_CMPA_SIZE				5
545 #define GEM_CMPAEN_OFFSET			18 /* Compare A Enable */
546 #define GEM_CMPAEN_SIZE				1
547 #define GEM_CMPB_OFFSET				19 /* Compare B - Index to screener type 2 Compare register */
548 #define GEM_CMPB_SIZE				5
549 #define GEM_CMPBEN_OFFSET			24 /* Compare B Enable */
550 #define GEM_CMPBEN_SIZE				1
551 #define GEM_CMPC_OFFSET				25 /* Compare C - Index to screener type 2 Compare register */
552 #define GEM_CMPC_SIZE				5
553 #define GEM_CMPCEN_OFFSET			30 /* Compare C Enable */
554 #define GEM_CMPCEN_SIZE				1
555 
556 /* Bitfields in ETHT */
557 #define GEM_ETHTCMP_OFFSET			0 /* EtherType compare value */
558 #define GEM_ETHTCMP_SIZE			16
559 
560 /* Bitfields in T2CMPW0 */
561 #define GEM_T2CMP_OFFSET			16 /* 0xFFFF0000 compare value */
562 #define GEM_T2CMP_SIZE				16
563 #define GEM_T2MASK_OFFSET			0 /* 0x0000FFFF compare value or mask */
564 #define GEM_T2MASK_SIZE				16
565 
566 /* Bitfields in T2CMPW1 */
567 #define GEM_T2DISMSK_OFFSET			9 /* disable mask */
568 #define GEM_T2DISMSK_SIZE			1
569 #define GEM_T2CMPOFST_OFFSET			7 /* compare offset */
570 #define GEM_T2CMPOFST_SIZE			2
571 #define GEM_T2OFST_OFFSET			0 /* offset value */
572 #define GEM_T2OFST_SIZE				7
573 
574 /* Offset for screener type 2 compare values (T2CMPOFST).
575  * Note the offset is applied after the specified point,
576  * e.g. GEM_T2COMPOFST_ETYPE denotes the EtherType field, so an offset
577  * of 12 bytes from this would be the source IP address in an IP header
578  */
579 #define GEM_T2COMPOFST_SOF		0
580 #define GEM_T2COMPOFST_ETYPE	1
581 #define GEM_T2COMPOFST_IPHDR	2
582 #define GEM_T2COMPOFST_TCPUDP	3
583 
584 /* offset from EtherType to IP address */
585 #define ETYPE_SRCIP_OFFSET			12
586 #define ETYPE_DSTIP_OFFSET			16
587 
588 /* offset from IP header to port */
589 #define IPHDR_SRCPORT_OFFSET		0
590 #define IPHDR_DSTPORT_OFFSET		2
591 
592 /* Transmit DMA buffer descriptor Word 1 */
593 #define GEM_DMA_TXVALID_OFFSET		23 /* timestamp has been captured in the Buffer Descriptor */
594 #define GEM_DMA_TXVALID_SIZE		1
595 
596 /* Receive DMA buffer descriptor Word 0 */
597 #define GEM_DMA_RXVALID_OFFSET		2 /* indicates a valid timestamp in the Buffer Descriptor */
598 #define GEM_DMA_RXVALID_SIZE		1
599 
600 /* DMA buffer descriptor Word 2 (32 bit addressing) or Word 4 (64 bit addressing) */
601 #define GEM_DMA_SECL_OFFSET			30 /* Timestamp seconds[1:0]  */
602 #define GEM_DMA_SECL_SIZE			2
603 #define GEM_DMA_NSEC_OFFSET			0 /* Timestamp nanosecs [29:0] */
604 #define GEM_DMA_NSEC_SIZE			30
605 
606 /* DMA buffer descriptor Word 3 (32 bit addressing) or Word 5 (64 bit addressing) */
607 
608 /* New hardware supports 12 bit precision of timestamp in DMA buffer descriptor.
609  * Old hardware supports only 6 bit precision but it is enough for PTP.
610  * Less accuracy is used always instead of checking hardware version.
611  */
612 #define GEM_DMA_SECH_OFFSET			0 /* Timestamp seconds[5:2] */
613 #define GEM_DMA_SECH_SIZE			4
614 #define GEM_DMA_SEC_WIDTH			(GEM_DMA_SECH_SIZE + GEM_DMA_SECL_SIZE)
615 #define GEM_DMA_SEC_TOP				(1 << GEM_DMA_SEC_WIDTH)
616 #define GEM_DMA_SEC_MASK			(GEM_DMA_SEC_TOP - 1)
617 
618 /* Bitfields in ADJ */
619 #define GEM_ADDSUB_OFFSET			31
620 #define GEM_ADDSUB_SIZE				1
621 /* Constants for CLK */
622 #define MACB_CLK_DIV8				0
623 #define MACB_CLK_DIV16				1
624 #define MACB_CLK_DIV32				2
625 #define MACB_CLK_DIV64				3
626 
627 /* GEM specific constants for CLK. */
628 #define GEM_CLK_DIV8				0
629 #define GEM_CLK_DIV16				1
630 #define GEM_CLK_DIV32				2
631 #define GEM_CLK_DIV48				3
632 #define GEM_CLK_DIV64				4
633 #define GEM_CLK_DIV96				5
634 
635 /* Constants for MAN register */
636 #define MACB_MAN_C22_SOF			1
637 #define MACB_MAN_C22_WRITE			1
638 #define MACB_MAN_C22_READ			2
639 #define MACB_MAN_C22_CODE			2
640 
641 #define MACB_MAN_C45_SOF			0
642 #define MACB_MAN_C45_ADDR			0
643 #define MACB_MAN_C45_WRITE			1
644 #define MACB_MAN_C45_POST_READ_INCR		2
645 #define MACB_MAN_C45_READ			3
646 #define MACB_MAN_C45_CODE			2
647 
648 /* Capability mask bits */
649 #define MACB_CAPS_ISR_CLEAR_ON_WRITE		0x00000001
650 #define MACB_CAPS_USRIO_HAS_CLKEN		0x00000002
651 #define MACB_CAPS_USRIO_DEFAULT_IS_MII_GMII	0x00000004
652 #define MACB_CAPS_NO_GIGABIT_HALF		0x00000008
653 #define MACB_CAPS_USRIO_DISABLED		0x00000010
654 #define MACB_CAPS_JUMBO				0x00000020
655 #define MACB_CAPS_GEM_HAS_PTP			0x00000040
656 #define MACB_CAPS_BD_RD_PREFETCH		0x00000080
657 #define MACB_CAPS_NEEDS_RSTONUBR		0x00000100
658 #define MACB_CAPS_MACB_IS_EMAC			0x08000000
659 #define MACB_CAPS_FIFO_MODE			0x10000000
660 #define MACB_CAPS_GIGABIT_MODE_AVAILABLE	0x20000000
661 #define MACB_CAPS_SG_DISABLED			0x40000000
662 #define MACB_CAPS_MACB_IS_GEM			0x80000000
663 
664 /* LSO settings */
665 #define MACB_LSO_UFO_ENABLE			0x01
666 #define MACB_LSO_TSO_ENABLE			0x02
667 
668 /* Bit manipulation macros */
669 #define MACB_BIT(name)					\
670 	(1 << MACB_##name##_OFFSET)
671 #define MACB_BF(name,value)				\
672 	(((value) & ((1 << MACB_##name##_SIZE) - 1))	\
673 	 << MACB_##name##_OFFSET)
674 #define MACB_BFEXT(name,value)\
675 	(((value) >> MACB_##name##_OFFSET)		\
676 	 & ((1 << MACB_##name##_SIZE) - 1))
677 #define MACB_BFINS(name,value,old)			\
678 	(((old) & ~(((1 << MACB_##name##_SIZE) - 1)	\
679 		    << MACB_##name##_OFFSET))		\
680 	 | MACB_BF(name,value))
681 
682 #define GEM_BIT(name)					\
683 	(1 << GEM_##name##_OFFSET)
684 #define GEM_BF(name, value)				\
685 	(((value) & ((1 << GEM_##name##_SIZE) - 1))	\
686 	 << GEM_##name##_OFFSET)
687 #define GEM_BFEXT(name, value)\
688 	(((value) >> GEM_##name##_OFFSET)		\
689 	 & ((1 << GEM_##name##_SIZE) - 1))
690 #define GEM_BFINS(name, value, old)			\
691 	(((old) & ~(((1 << GEM_##name##_SIZE) - 1)	\
692 		    << GEM_##name##_OFFSET))		\
693 	 | GEM_BF(name, value))
694 
695 /* Register access macros */
696 #define macb_readl(port, reg)		(port)->macb_reg_readl((port), MACB_##reg)
697 #define macb_writel(port, reg, value)	(port)->macb_reg_writel((port), MACB_##reg, (value))
698 #define gem_readl(port, reg)		(port)->macb_reg_readl((port), GEM_##reg)
699 #define gem_writel(port, reg, value)	(port)->macb_reg_writel((port), GEM_##reg, (value))
700 #define queue_readl(queue, reg)		(queue)->bp->macb_reg_readl((queue)->bp, (queue)->reg)
701 #define queue_writel(queue, reg, value)	(queue)->bp->macb_reg_writel((queue)->bp, (queue)->reg, (value))
702 #define gem_readl_n(port, reg, idx)		(port)->macb_reg_readl((port), GEM_##reg + idx * 4)
703 #define gem_writel_n(port, reg, idx, value)	(port)->macb_reg_writel((port), GEM_##reg + idx * 4, (value))
704 
705 #define PTP_TS_BUFFER_SIZE		128 /* must be power of 2 */
706 
707 /* Conditional GEM/MACB macros.  These perform the operation to the correct
708  * register dependent on whether the device is a GEM or a MACB.  For registers
709  * and bitfields that are common across both devices, use macb_{read,write}l
710  * to avoid the cost of the conditional.
711  */
712 #define macb_or_gem_writel(__bp, __reg, __value) \
713 	({ \
714 		if (macb_is_gem((__bp))) \
715 			gem_writel((__bp), __reg, __value); \
716 		else \
717 			macb_writel((__bp), __reg, __value); \
718 	})
719 
720 #define macb_or_gem_readl(__bp, __reg) \
721 	({ \
722 		u32 __v; \
723 		if (macb_is_gem((__bp))) \
724 			__v = gem_readl((__bp), __reg); \
725 		else \
726 			__v = macb_readl((__bp), __reg); \
727 		__v; \
728 	})
729 
730 #define MACB_READ_NSR(bp)	macb_readl(bp, NSR)
731 
732 /* struct macb_dma_desc - Hardware DMA descriptor
733  * @addr: DMA address of data buffer
734  * @ctrl: Control and status bits
735  */
736 struct macb_dma_desc {
737 	u32	addr;
738 	u32	ctrl;
739 };
740 
741 #ifdef MACB_EXT_DESC
742 #define HW_DMA_CAP_32B		0
743 #define HW_DMA_CAP_64B		(1 << 0)
744 #define HW_DMA_CAP_PTP		(1 << 1)
745 #define HW_DMA_CAP_64B_PTP	(HW_DMA_CAP_64B | HW_DMA_CAP_PTP)
746 
747 struct macb_dma_desc_64 {
748 	u32 addrh;
749 	u32 resvd;
750 };
751 
752 struct macb_dma_desc_ptp {
753 	u32	ts_1;
754 	u32	ts_2;
755 };
756 
757 struct gem_tx_ts {
758 	struct sk_buff *skb;
759 	struct macb_dma_desc_ptp desc_ptp;
760 };
761 #endif
762 
763 /* DMA descriptor bitfields */
764 #define MACB_RX_USED_OFFSET			0
765 #define MACB_RX_USED_SIZE			1
766 #define MACB_RX_WRAP_OFFSET			1
767 #define MACB_RX_WRAP_SIZE			1
768 #define MACB_RX_WADDR_OFFSET			2
769 #define MACB_RX_WADDR_SIZE			30
770 
771 #define MACB_RX_FRMLEN_OFFSET			0
772 #define MACB_RX_FRMLEN_SIZE			12
773 #define MACB_RX_OFFSET_OFFSET			12
774 #define MACB_RX_OFFSET_SIZE			2
775 #define MACB_RX_SOF_OFFSET			14
776 #define MACB_RX_SOF_SIZE			1
777 #define MACB_RX_EOF_OFFSET			15
778 #define MACB_RX_EOF_SIZE			1
779 #define MACB_RX_CFI_OFFSET			16
780 #define MACB_RX_CFI_SIZE			1
781 #define MACB_RX_VLAN_PRI_OFFSET			17
782 #define MACB_RX_VLAN_PRI_SIZE			3
783 #define MACB_RX_PRI_TAG_OFFSET			20
784 #define MACB_RX_PRI_TAG_SIZE			1
785 #define MACB_RX_VLAN_TAG_OFFSET			21
786 #define MACB_RX_VLAN_TAG_SIZE			1
787 #define MACB_RX_TYPEID_MATCH_OFFSET		22
788 #define MACB_RX_TYPEID_MATCH_SIZE		1
789 #define MACB_RX_SA4_MATCH_OFFSET		23
790 #define MACB_RX_SA4_MATCH_SIZE			1
791 #define MACB_RX_SA3_MATCH_OFFSET		24
792 #define MACB_RX_SA3_MATCH_SIZE			1
793 #define MACB_RX_SA2_MATCH_OFFSET		25
794 #define MACB_RX_SA2_MATCH_SIZE			1
795 #define MACB_RX_SA1_MATCH_OFFSET		26
796 #define MACB_RX_SA1_MATCH_SIZE			1
797 #define MACB_RX_EXT_MATCH_OFFSET		28
798 #define MACB_RX_EXT_MATCH_SIZE			1
799 #define MACB_RX_UHASH_MATCH_OFFSET		29
800 #define MACB_RX_UHASH_MATCH_SIZE		1
801 #define MACB_RX_MHASH_MATCH_OFFSET		30
802 #define MACB_RX_MHASH_MATCH_SIZE		1
803 #define MACB_RX_BROADCAST_OFFSET		31
804 #define MACB_RX_BROADCAST_SIZE			1
805 
806 #define MACB_RX_FRMLEN_MASK			0xFFF
807 #define MACB_RX_JFRMLEN_MASK			0x3FFF
808 
809 /* RX checksum offload disabled: bit 24 clear in NCFGR */
810 #define GEM_RX_TYPEID_MATCH_OFFSET		22
811 #define GEM_RX_TYPEID_MATCH_SIZE		2
812 
813 /* RX checksum offload enabled: bit 24 set in NCFGR */
814 #define GEM_RX_CSUM_OFFSET			22
815 #define GEM_RX_CSUM_SIZE			2
816 
817 #define MACB_TX_FRMLEN_OFFSET			0
818 #define MACB_TX_FRMLEN_SIZE			11
819 #define MACB_TX_LAST_OFFSET			15
820 #define MACB_TX_LAST_SIZE			1
821 #define MACB_TX_NOCRC_OFFSET			16
822 #define MACB_TX_NOCRC_SIZE			1
823 #define MACB_MSS_MFS_OFFSET			16
824 #define MACB_MSS_MFS_SIZE			14
825 #define MACB_TX_LSO_OFFSET			17
826 #define MACB_TX_LSO_SIZE			2
827 #define MACB_TX_TCP_SEQ_SRC_OFFSET		19
828 #define MACB_TX_TCP_SEQ_SRC_SIZE		1
829 #define MACB_TX_BUF_EXHAUSTED_OFFSET		27
830 #define MACB_TX_BUF_EXHAUSTED_SIZE		1
831 #define MACB_TX_UNDERRUN_OFFSET			28
832 #define MACB_TX_UNDERRUN_SIZE			1
833 #define MACB_TX_ERROR_OFFSET			29
834 #define MACB_TX_ERROR_SIZE			1
835 #define MACB_TX_WRAP_OFFSET			30
836 #define MACB_TX_WRAP_SIZE			1
837 #define MACB_TX_USED_OFFSET			31
838 #define MACB_TX_USED_SIZE			1
839 
840 #define GEM_TX_FRMLEN_OFFSET			0
841 #define GEM_TX_FRMLEN_SIZE			14
842 
843 /* Buffer descriptor constants */
844 #define GEM_RX_CSUM_NONE			0
845 #define GEM_RX_CSUM_IP_ONLY			1
846 #define GEM_RX_CSUM_IP_TCP			2
847 #define GEM_RX_CSUM_IP_UDP			3
848 
849 /* limit RX checksum offload to TCP and UDP packets */
850 #define GEM_RX_CSUM_CHECKED_MASK		2
851 
852 /* Scaled PPM fraction */
853 #define PPM_FRACTION	16
854 
855 /* struct macb_tx_skb - data about an skb which is being transmitted
856  * @skb: skb currently being transmitted, only set for the last buffer
857  *       of the frame
858  * @mapping: DMA address of the skb's fragment buffer
859  * @size: size of the DMA mapped buffer
860  * @mapped_as_page: true when buffer was mapped with skb_frag_dma_map(),
861  *                  false when buffer was mapped with dma_map_single()
862  */
863 struct macb_tx_skb {
864 	struct sk_buff		*skb;
865 	dma_addr_t		mapping;
866 	size_t			size;
867 	bool			mapped_as_page;
868 };
869 
870 /* Hardware-collected statistics. Used when updating the network
871  * device stats by a periodic timer.
872  */
873 struct macb_stats {
874 	u32	rx_pause_frames;
875 	u32	tx_ok;
876 	u32	tx_single_cols;
877 	u32	tx_multiple_cols;
878 	u32	rx_ok;
879 	u32	rx_fcs_errors;
880 	u32	rx_align_errors;
881 	u32	tx_deferred;
882 	u32	tx_late_cols;
883 	u32	tx_excessive_cols;
884 	u32	tx_underruns;
885 	u32	tx_carrier_errors;
886 	u32	rx_resource_errors;
887 	u32	rx_overruns;
888 	u32	rx_symbol_errors;
889 	u32	rx_oversize_pkts;
890 	u32	rx_jabbers;
891 	u32	rx_undersize_pkts;
892 	u32	sqe_test_errors;
893 	u32	rx_length_mismatch;
894 	u32	tx_pause_frames;
895 };
896 
897 struct gem_stats {
898 	u32	tx_octets_31_0;
899 	u32	tx_octets_47_32;
900 	u32	tx_frames;
901 	u32	tx_broadcast_frames;
902 	u32	tx_multicast_frames;
903 	u32	tx_pause_frames;
904 	u32	tx_64_byte_frames;
905 	u32	tx_65_127_byte_frames;
906 	u32	tx_128_255_byte_frames;
907 	u32	tx_256_511_byte_frames;
908 	u32	tx_512_1023_byte_frames;
909 	u32	tx_1024_1518_byte_frames;
910 	u32	tx_greater_than_1518_byte_frames;
911 	u32	tx_underrun;
912 	u32	tx_single_collision_frames;
913 	u32	tx_multiple_collision_frames;
914 	u32	tx_excessive_collisions;
915 	u32	tx_late_collisions;
916 	u32	tx_deferred_frames;
917 	u32	tx_carrier_sense_errors;
918 	u32	rx_octets_31_0;
919 	u32	rx_octets_47_32;
920 	u32	rx_frames;
921 	u32	rx_broadcast_frames;
922 	u32	rx_multicast_frames;
923 	u32	rx_pause_frames;
924 	u32	rx_64_byte_frames;
925 	u32	rx_65_127_byte_frames;
926 	u32	rx_128_255_byte_frames;
927 	u32	rx_256_511_byte_frames;
928 	u32	rx_512_1023_byte_frames;
929 	u32	rx_1024_1518_byte_frames;
930 	u32	rx_greater_than_1518_byte_frames;
931 	u32	rx_undersized_frames;
932 	u32	rx_oversize_frames;
933 	u32	rx_jabbers;
934 	u32	rx_frame_check_sequence_errors;
935 	u32	rx_length_field_frame_errors;
936 	u32	rx_symbol_errors;
937 	u32	rx_alignment_errors;
938 	u32	rx_resource_errors;
939 	u32	rx_overruns;
940 	u32	rx_ip_header_checksum_errors;
941 	u32	rx_tcp_checksum_errors;
942 	u32	rx_udp_checksum_errors;
943 };
944 
945 /* Describes the name and offset of an individual statistic register, as
946  * returned by `ethtool -S`. Also describes which net_device_stats statistics
947  * this register should contribute to.
948  */
949 struct gem_statistic {
950 	char stat_string[ETH_GSTRING_LEN];
951 	int offset;
952 	u32 stat_bits;
953 };
954 
955 /* Bitfield defs for net_device_stat statistics */
956 #define GEM_NDS_RXERR_OFFSET		0
957 #define GEM_NDS_RXLENERR_OFFSET		1
958 #define GEM_NDS_RXOVERERR_OFFSET	2
959 #define GEM_NDS_RXCRCERR_OFFSET		3
960 #define GEM_NDS_RXFRAMEERR_OFFSET	4
961 #define GEM_NDS_RXFIFOERR_OFFSET	5
962 #define GEM_NDS_TXERR_OFFSET		6
963 #define GEM_NDS_TXABORTEDERR_OFFSET	7
964 #define GEM_NDS_TXCARRIERERR_OFFSET	8
965 #define GEM_NDS_TXFIFOERR_OFFSET	9
966 #define GEM_NDS_COLLISIONS_OFFSET	10
967 
968 #define GEM_STAT_TITLE(name, title) GEM_STAT_TITLE_BITS(name, title, 0)
969 #define GEM_STAT_TITLE_BITS(name, title, bits) {	\
970 	.stat_string = title,				\
971 	.offset = GEM_##name,				\
972 	.stat_bits = bits				\
973 }
974 
975 /* list of gem statistic registers. The names MUST match the
976  * corresponding GEM_* definitions.
977  */
978 static const struct gem_statistic gem_statistics[] = {
979 	GEM_STAT_TITLE(OCTTXL, "tx_octets"), /* OCTTXH combined with OCTTXL */
980 	GEM_STAT_TITLE(TXCNT, "tx_frames"),
981 	GEM_STAT_TITLE(TXBCCNT, "tx_broadcast_frames"),
982 	GEM_STAT_TITLE(TXMCCNT, "tx_multicast_frames"),
983 	GEM_STAT_TITLE(TXPAUSECNT, "tx_pause_frames"),
984 	GEM_STAT_TITLE(TX64CNT, "tx_64_byte_frames"),
985 	GEM_STAT_TITLE(TX65CNT, "tx_65_127_byte_frames"),
986 	GEM_STAT_TITLE(TX128CNT, "tx_128_255_byte_frames"),
987 	GEM_STAT_TITLE(TX256CNT, "tx_256_511_byte_frames"),
988 	GEM_STAT_TITLE(TX512CNT, "tx_512_1023_byte_frames"),
989 	GEM_STAT_TITLE(TX1024CNT, "tx_1024_1518_byte_frames"),
990 	GEM_STAT_TITLE(TX1519CNT, "tx_greater_than_1518_byte_frames"),
991 	GEM_STAT_TITLE_BITS(TXURUNCNT, "tx_underrun",
992 			    GEM_BIT(NDS_TXERR)|GEM_BIT(NDS_TXFIFOERR)),
993 	GEM_STAT_TITLE_BITS(SNGLCOLLCNT, "tx_single_collision_frames",
994 			    GEM_BIT(NDS_TXERR)|GEM_BIT(NDS_COLLISIONS)),
995 	GEM_STAT_TITLE_BITS(MULTICOLLCNT, "tx_multiple_collision_frames",
996 			    GEM_BIT(NDS_TXERR)|GEM_BIT(NDS_COLLISIONS)),
997 	GEM_STAT_TITLE_BITS(EXCESSCOLLCNT, "tx_excessive_collisions",
998 			    GEM_BIT(NDS_TXERR)|
999 			    GEM_BIT(NDS_TXABORTEDERR)|
1000 			    GEM_BIT(NDS_COLLISIONS)),
1001 	GEM_STAT_TITLE_BITS(LATECOLLCNT, "tx_late_collisions",
1002 			    GEM_BIT(NDS_TXERR)|GEM_BIT(NDS_COLLISIONS)),
1003 	GEM_STAT_TITLE(TXDEFERCNT, "tx_deferred_frames"),
1004 	GEM_STAT_TITLE_BITS(TXCSENSECNT, "tx_carrier_sense_errors",
1005 			    GEM_BIT(NDS_TXERR)|GEM_BIT(NDS_COLLISIONS)),
1006 	GEM_STAT_TITLE(OCTRXL, "rx_octets"), /* OCTRXH combined with OCTRXL */
1007 	GEM_STAT_TITLE(RXCNT, "rx_frames"),
1008 	GEM_STAT_TITLE(RXBROADCNT, "rx_broadcast_frames"),
1009 	GEM_STAT_TITLE(RXMULTICNT, "rx_multicast_frames"),
1010 	GEM_STAT_TITLE(RXPAUSECNT, "rx_pause_frames"),
1011 	GEM_STAT_TITLE(RX64CNT, "rx_64_byte_frames"),
1012 	GEM_STAT_TITLE(RX65CNT, "rx_65_127_byte_frames"),
1013 	GEM_STAT_TITLE(RX128CNT, "rx_128_255_byte_frames"),
1014 	GEM_STAT_TITLE(RX256CNT, "rx_256_511_byte_frames"),
1015 	GEM_STAT_TITLE(RX512CNT, "rx_512_1023_byte_frames"),
1016 	GEM_STAT_TITLE(RX1024CNT, "rx_1024_1518_byte_frames"),
1017 	GEM_STAT_TITLE(RX1519CNT, "rx_greater_than_1518_byte_frames"),
1018 	GEM_STAT_TITLE_BITS(RXUNDRCNT, "rx_undersized_frames",
1019 			    GEM_BIT(NDS_RXERR)|GEM_BIT(NDS_RXLENERR)),
1020 	GEM_STAT_TITLE_BITS(RXOVRCNT, "rx_oversize_frames",
1021 			    GEM_BIT(NDS_RXERR)|GEM_BIT(NDS_RXLENERR)),
1022 	GEM_STAT_TITLE_BITS(RXJABCNT, "rx_jabbers",
1023 			    GEM_BIT(NDS_RXERR)|GEM_BIT(NDS_RXLENERR)),
1024 	GEM_STAT_TITLE_BITS(RXFCSCNT, "rx_frame_check_sequence_errors",
1025 			    GEM_BIT(NDS_RXERR)|GEM_BIT(NDS_RXCRCERR)),
1026 	GEM_STAT_TITLE_BITS(RXLENGTHCNT, "rx_length_field_frame_errors",
1027 			    GEM_BIT(NDS_RXERR)),
1028 	GEM_STAT_TITLE_BITS(RXSYMBCNT, "rx_symbol_errors",
1029 			    GEM_BIT(NDS_RXERR)|GEM_BIT(NDS_RXFRAMEERR)),
1030 	GEM_STAT_TITLE_BITS(RXALIGNCNT, "rx_alignment_errors",
1031 			    GEM_BIT(NDS_RXERR)|GEM_BIT(NDS_RXOVERERR)),
1032 	GEM_STAT_TITLE_BITS(RXRESERRCNT, "rx_resource_errors",
1033 			    GEM_BIT(NDS_RXERR)|GEM_BIT(NDS_RXOVERERR)),
1034 	GEM_STAT_TITLE_BITS(RXORCNT, "rx_overruns",
1035 			    GEM_BIT(NDS_RXERR)|GEM_BIT(NDS_RXFIFOERR)),
1036 	GEM_STAT_TITLE_BITS(RXIPCCNT, "rx_ip_header_checksum_errors",
1037 			    GEM_BIT(NDS_RXERR)),
1038 	GEM_STAT_TITLE_BITS(RXTCPCCNT, "rx_tcp_checksum_errors",
1039 			    GEM_BIT(NDS_RXERR)),
1040 	GEM_STAT_TITLE_BITS(RXUDPCCNT, "rx_udp_checksum_errors",
1041 			    GEM_BIT(NDS_RXERR)),
1042 };
1043 
1044 #define GEM_STATS_LEN ARRAY_SIZE(gem_statistics)
1045 
1046 #define QUEUE_STAT_TITLE(title) {	\
1047 	.stat_string = title,			\
1048 }
1049 
1050 /* per queue statistics, each should be unsigned long type */
1051 struct queue_stats {
1052 	union {
1053 		unsigned long first;
1054 		unsigned long rx_packets;
1055 	};
1056 	unsigned long rx_bytes;
1057 	unsigned long rx_dropped;
1058 	unsigned long tx_packets;
1059 	unsigned long tx_bytes;
1060 	unsigned long tx_dropped;
1061 };
1062 
1063 static const struct gem_statistic queue_statistics[] = {
1064 		QUEUE_STAT_TITLE("rx_packets"),
1065 		QUEUE_STAT_TITLE("rx_bytes"),
1066 		QUEUE_STAT_TITLE("rx_dropped"),
1067 		QUEUE_STAT_TITLE("tx_packets"),
1068 		QUEUE_STAT_TITLE("tx_bytes"),
1069 		QUEUE_STAT_TITLE("tx_dropped"),
1070 };
1071 
1072 #define QUEUE_STATS_LEN ARRAY_SIZE(queue_statistics)
1073 
1074 struct macb;
1075 struct macb_queue;
1076 
1077 struct macb_or_gem_ops {
1078 	int	(*mog_alloc_rx_buffers)(struct macb *bp);
1079 	void	(*mog_free_rx_buffers)(struct macb *bp);
1080 	void	(*mog_init_rings)(struct macb *bp);
1081 	int	(*mog_rx)(struct macb_queue *queue, struct napi_struct *napi,
1082 			  int budget);
1083 };
1084 
1085 /* MACB-PTP interface: adapt to platform needs. */
1086 struct macb_ptp_info {
1087 	void (*ptp_init)(struct net_device *ndev);
1088 	void (*ptp_remove)(struct net_device *ndev);
1089 	s32 (*get_ptp_max_adj)(void);
1090 	unsigned int (*get_tsu_rate)(struct macb *bp);
1091 	int (*get_ts_info)(struct net_device *dev,
1092 			   struct ethtool_ts_info *info);
1093 	int (*get_hwtst)(struct net_device *netdev,
1094 			 struct ifreq *ifr);
1095 	int (*set_hwtst)(struct net_device *netdev,
1096 			 struct ifreq *ifr, int cmd);
1097 };
1098 
1099 struct macb_pm_data {
1100 	u32 scrt2;
1101 	u32 usrio;
1102 };
1103 
1104 struct macb_config {
1105 	u32			caps;
1106 	unsigned int		dma_burst_length;
1107 	int	(*clk_init)(struct platform_device *pdev, struct clk **pclk,
1108 			    struct clk **hclk, struct clk **tx_clk,
1109 			    struct clk **rx_clk, struct clk **tsu_clk);
1110 	int	(*init)(struct platform_device *pdev);
1111 	int	jumbo_max_len;
1112 };
1113 
1114 struct tsu_incr {
1115 	u32 sub_ns;
1116 	u32 ns;
1117 };
1118 
1119 struct macb_queue {
1120 	struct macb		*bp;
1121 	int			irq;
1122 
1123 	unsigned int		ISR;
1124 	unsigned int		IER;
1125 	unsigned int		IDR;
1126 	unsigned int		IMR;
1127 	unsigned int		TBQP;
1128 	unsigned int		TBQPH;
1129 	unsigned int		RBQS;
1130 	unsigned int		RBQP;
1131 	unsigned int		RBQPH;
1132 
1133 	unsigned int		tx_head, tx_tail;
1134 	struct macb_dma_desc	*tx_ring;
1135 	struct macb_tx_skb	*tx_skb;
1136 	dma_addr_t		tx_ring_dma;
1137 	struct work_struct	tx_error_task;
1138 
1139 	dma_addr_t		rx_ring_dma;
1140 	dma_addr_t		rx_buffers_dma;
1141 	unsigned int		rx_tail;
1142 	unsigned int		rx_prepared_head;
1143 	struct macb_dma_desc	*rx_ring;
1144 	struct sk_buff		**rx_skbuff;
1145 	void			*rx_buffers;
1146 	struct napi_struct	napi;
1147 	struct queue_stats stats;
1148 
1149 #ifdef CONFIG_MACB_USE_HWSTAMP
1150 	struct work_struct	tx_ts_task;
1151 	unsigned int		tx_ts_head, tx_ts_tail;
1152 	struct gem_tx_ts	tx_timestamps[PTP_TS_BUFFER_SIZE];
1153 #endif
1154 };
1155 
1156 struct ethtool_rx_fs_item {
1157 	struct ethtool_rx_flow_spec fs;
1158 	struct list_head list;
1159 };
1160 
1161 struct ethtool_rx_fs_list {
1162 	struct list_head list;
1163 	unsigned int count;
1164 };
1165 
1166 struct macb {
1167 	void __iomem		*regs;
1168 	bool			native_io;
1169 
1170 	/* hardware IO accessors */
1171 	u32	(*macb_reg_readl)(struct macb *bp, int offset);
1172 	void	(*macb_reg_writel)(struct macb *bp, int offset, u32 value);
1173 
1174 	size_t			rx_buffer_size;
1175 
1176 	unsigned int		rx_ring_size;
1177 	unsigned int		tx_ring_size;
1178 
1179 	unsigned int		num_queues;
1180 	unsigned int		queue_mask;
1181 	struct macb_queue	queues[MACB_MAX_QUEUES];
1182 
1183 	spinlock_t		lock;
1184 	struct platform_device	*pdev;
1185 	struct clk		*pclk;
1186 	struct clk		*hclk;
1187 	struct clk		*tx_clk;
1188 	struct clk		*rx_clk;
1189 	struct clk		*tsu_clk;
1190 	struct net_device	*dev;
1191 	union {
1192 		struct macb_stats	macb;
1193 		struct gem_stats	gem;
1194 	}			hw_stats;
1195 
1196 	struct macb_or_gem_ops	macbgem_ops;
1197 
1198 	struct mii_bus		*mii_bus;
1199 	struct phylink		*phylink;
1200 	struct phylink_config	phylink_config;
1201 
1202 	u32			caps;
1203 	unsigned int		dma_burst_length;
1204 
1205 	phy_interface_t		phy_interface;
1206 
1207 	/* AT91RM9200 transmit */
1208 	struct sk_buff *skb;			/* holds skb until xmit interrupt completes */
1209 	dma_addr_t skb_physaddr;		/* phys addr from pci_map_single */
1210 	int skb_length;				/* saved skb length for pci_unmap_single */
1211 	unsigned int		max_tx_length;
1212 
1213 	u64			ethtool_stats[GEM_STATS_LEN + QUEUE_STATS_LEN * MACB_MAX_QUEUES];
1214 
1215 	unsigned int		rx_frm_len_mask;
1216 	unsigned int		jumbo_max_len;
1217 
1218 	u32			wol;
1219 
1220 	struct macb_ptp_info	*ptp_info;	/* macb-ptp interface */
1221 #ifdef MACB_EXT_DESC
1222 	uint8_t hw_dma_cap;
1223 #endif
1224 	spinlock_t tsu_clk_lock; /* gem tsu clock locking */
1225 	unsigned int tsu_rate;
1226 	struct ptp_clock *ptp_clock;
1227 	struct ptp_clock_info ptp_clock_info;
1228 	struct tsu_incr tsu_incr;
1229 	struct hwtstamp_config tstamp_config;
1230 
1231 	/* RX queue filer rule set*/
1232 	struct ethtool_rx_fs_list rx_fs_list;
1233 	spinlock_t rx_fs_lock;
1234 	unsigned int max_tuples;
1235 
1236 	struct tasklet_struct	hresp_err_tasklet;
1237 
1238 	int	rx_bd_rd_prefetch;
1239 	int	tx_bd_rd_prefetch;
1240 
1241 	u32	rx_intr_mask;
1242 
1243 	struct macb_pm_data pm_data;
1244 };
1245 
1246 #ifdef CONFIG_MACB_USE_HWSTAMP
1247 #define GEM_TSEC_SIZE  (GEM_TSH_SIZE + GEM_TSL_SIZE)
1248 #define TSU_SEC_MAX_VAL (((u64)1 << GEM_TSEC_SIZE) - 1)
1249 #define TSU_NSEC_MAX_VAL ((1 << GEM_TN_SIZE) - 1)
1250 
1251 enum macb_bd_control {
1252 	TSTAMP_DISABLED,
1253 	TSTAMP_FRAME_PTP_EVENT_ONLY,
1254 	TSTAMP_ALL_PTP_FRAMES,
1255 	TSTAMP_ALL_FRAMES,
1256 };
1257 
1258 void gem_ptp_init(struct net_device *ndev);
1259 void gem_ptp_remove(struct net_device *ndev);
1260 int gem_ptp_txstamp(struct macb_queue *queue, struct sk_buff *skb, struct macb_dma_desc *des);
1261 void gem_ptp_rxstamp(struct macb *bp, struct sk_buff *skb, struct macb_dma_desc *desc);
1262 static inline int gem_ptp_do_txstamp(struct macb_queue *queue, struct sk_buff *skb, struct macb_dma_desc *desc)
1263 {
1264 	if (queue->bp->tstamp_config.tx_type == TSTAMP_DISABLED)
1265 		return -ENOTSUPP;
1266 
1267 	return gem_ptp_txstamp(queue, skb, desc);
1268 }
1269 
1270 static inline void gem_ptp_do_rxstamp(struct macb *bp, struct sk_buff *skb, struct macb_dma_desc *desc)
1271 {
1272 	if (bp->tstamp_config.rx_filter == TSTAMP_DISABLED)
1273 		return;
1274 
1275 	gem_ptp_rxstamp(bp, skb, desc);
1276 }
1277 int gem_get_hwtst(struct net_device *dev, struct ifreq *rq);
1278 int gem_set_hwtst(struct net_device *dev, struct ifreq *ifr, int cmd);
1279 #else
1280 static inline void gem_ptp_init(struct net_device *ndev) { }
1281 static inline void gem_ptp_remove(struct net_device *ndev) { }
1282 
1283 static inline int gem_ptp_do_txstamp(struct macb_queue *queue, struct sk_buff *skb, struct macb_dma_desc *desc)
1284 {
1285 	return -1;
1286 }
1287 
1288 static inline void gem_ptp_do_rxstamp(struct macb *bp, struct sk_buff *skb, struct macb_dma_desc *desc) { }
1289 #endif
1290 
1291 static inline bool macb_is_gem(struct macb *bp)
1292 {
1293 	return !!(bp->caps & MACB_CAPS_MACB_IS_GEM);
1294 }
1295 
1296 static inline bool gem_has_ptp(struct macb *bp)
1297 {
1298 	return !!(bp->caps & MACB_CAPS_GEM_HAS_PTP);
1299 }
1300 
1301 #endif /* _MACB_H */
1302