1 /* SPDX-License-Identifier: (GPL-2.0 OR MIT) */
2 /*
3  * Driver for Microsemi VSC85xx PHYs
4  *
5  * Copyright (c) 2020 Microsemi Corporation
6  */
7 
8 #ifndef _MSCC_PHY_MACSEC_H_
9 #define _MSCC_PHY_MACSEC_H_
10 
11 #include <net/macsec.h>
12 
13 #define MSCC_MS_MAX_FLOWS		16
14 
15 #define CONTROL_TYPE_EGRESS		0x6
16 #define CONTROL_TYPE_INGRESS		0xf
17 #define CONTROL_IV0			BIT(5)
18 #define CONTROL_IV1			BIT(6)
19 #define CONTROL_IV2			BIT(7)
20 #define CONTROL_UPDATE_SEQ		BIT(13)
21 #define CONTROL_IV_IN_SEQ		BIT(14)
22 #define CONTROL_ENCRYPT_AUTH		BIT(15)
23 #define CONTROL_KEY_IN_CTX		BIT(16)
24 #define CONTROL_CRYPTO_ALG(x)		((x) << 17)
25 #define     CTRYPTO_ALG_AES_CTR_128	0x5
26 #define     CTRYPTO_ALG_AES_CTR_192	0x6
27 #define     CTRYPTO_ALG_AES_CTR_256	0x7
28 #define CONTROL_DIGEST_TYPE(x)		((x) << 21)
29 #define CONTROL_AUTH_ALG(x)		((x) << 23)
30 #define     AUTH_ALG_AES_GHAS		0x4
31 #define CONTROL_AN(x)			((x) << 26)
32 #define CONTROL_SEQ_TYPE(x)		((x) << 28)
33 #define CONTROL_SEQ_MASK		BIT(30)
34 #define CONTROL_CONTEXT_ID		BIT(31)
35 
36 enum mscc_macsec_destination_ports {
37 	MSCC_MS_PORT_COMMON		= 0,
38 	MSCC_MS_PORT_RSVD		= 1,
39 	MSCC_MS_PORT_CONTROLLED		= 2,
40 	MSCC_MS_PORT_UNCONTROLLED	= 3,
41 };
42 
43 enum mscc_macsec_drop_actions {
44 	MSCC_MS_ACTION_BYPASS_CRC	= 0,
45 	MSCC_MS_ACTION_BYPASS_BAD	= 1,
46 	MSCC_MS_ACTION_DROP		= 2,
47 	MSCC_MS_ACTION_BYPASS		= 3,
48 };
49 
50 enum mscc_macsec_flow_types {
51 	MSCC_MS_FLOW_BYPASS		= 0,
52 	MSCC_MS_FLOW_DROP		= 1,
53 	MSCC_MS_FLOW_INGRESS		= 2,
54 	MSCC_MS_FLOW_EGRESS		= 3,
55 };
56 
57 enum mscc_macsec_validate_levels {
58 	MSCC_MS_VALIDATE_DISABLED	= 0,
59 	MSCC_MS_VALIDATE_CHECK		= 1,
60 	MSCC_MS_VALIDATE_STRICT		= 2,
61 };
62 
63 enum macsec_bank {
64 	FC_BUFFER   = 0x04,
65 	HOST_MAC    = 0x05,
66 	LINE_MAC    = 0x06,
67 	PROC_0      = 0x0e,
68 	PROC_2      = 0x0f,
69 	MACSEC_INGR = 0x38,
70 	MACSEC_EGR  = 0x3c,
71 };
72 
73 struct macsec_flow {
74 	struct list_head list;
75 	enum mscc_macsec_destination_ports port;
76 	enum macsec_bank bank;
77 	u32 index;
78 	int assoc_num;
79 	bool has_transformation;
80 
81 	/* Highest takes precedence [0..15] */
82 	u8 priority;
83 
84 	u8 key[MACSEC_MAX_KEY_LEN];
85 
86 	union {
87 		struct macsec_rx_sa *rx_sa;
88 		struct macsec_tx_sa *tx_sa;
89 	};
90 
91 	/* Matching */
92 	struct {
93 		u8 sci:1;
94 		u8 tagged:1;
95 		u8 untagged:1;
96 		u8 etype:1;
97 	} match;
98 
99 	u16 etype;
100 
101 	/* Action */
102 	struct {
103 		u8 bypass:1;
104 		u8 drop:1;
105 	} action;
106 };
107 
108 #define MSCC_EXT_PAGE_MACSEC_17		17
109 #define MSCC_EXT_PAGE_MACSEC_18		18
110 
111 #define MSCC_EXT_PAGE_MACSEC_19		19
112 #define MSCC_PHY_MACSEC_19_REG_ADDR(x)	(x)
113 #define MSCC_PHY_MACSEC_19_TARGET(x)	((x) << 12)
114 #define MSCC_PHY_MACSEC_19_READ		BIT(14)
115 #define MSCC_PHY_MACSEC_19_CMD		BIT(15)
116 
117 #define MSCC_EXT_PAGE_MACSEC_20		20
118 #define MSCC_PHY_MACSEC_20_TARGET(x)	(x)
119 
120 #define MSCC_MS_XFORM_REC(x, y)		(((x) << 5) + (y))
121 #define MSCC_MS_ENA_CFG			0x800
122 #define MSCC_MS_FC_CFG			0x804
123 #define MSCC_MS_SAM_MAC_SA_MATCH_LO(x)	(0x1000 + ((x) << 4))
124 #define MSCC_MS_SAM_MAC_SA_MATCH_HI(x)	(0x1001 + ((x) << 4))
125 #define MSCC_MS_SAM_MISC_MATCH(x)	(0x1004 + ((x) << 4))
126 #define MSCC_MS_SAM_MATCH_SCI_LO(x)	(0x1005 + ((x) << 4))
127 #define MSCC_MS_SAM_MATCH_SCI_HI(x)	(0x1006 + ((x) << 4))
128 #define MSCC_MS_SAM_MASK(x)		(0x1007 + ((x) << 4))
129 #define MSCC_MS_SAM_ENTRY_SET1		0x1808
130 #define MSCC_MS_SAM_ENTRY_CLEAR1	0x180c
131 #define MSCC_MS_SAM_FLOW_CTRL(x)	(0x1c00 + (x))
132 #define MSCC_MS_SAM_CP_TAG		0x1e40
133 #define MSCC_MS_SAM_NM_FLOW_NCP		0x1e51
134 #define MSCC_MS_SAM_NM_FLOW_CP		0x1e52
135 #define MSCC_MS_MISC_CONTROL		0x1e5f
136 #define MSCC_MS_COUNT_CONTROL		0x3204
137 #define MSCC_MS_PARAMS2_IG_CC_CONTROL	0x3a10
138 #define MSCC_MS_PARAMS2_IG_CP_TAG	0x3a14
139 #define MSCC_MS_VLAN_MTU_CHECK(x)	(0x3c40 + (x))
140 #define MSCC_MS_NON_VLAN_MTU_CHECK	0x3c48
141 #define MSCC_MS_PP_CTRL			0x3c4b
142 #define MSCC_MS_STATUS_CONTEXT_CTRL	0x3d02
143 #define MSCC_MS_INTR_CTRL_STATUS	0x3d04
144 #define MSCC_MS_BLOCK_CTX_UPDATE	0x3d0c
145 #define MSCC_MS_AIC_CTRL		0x3e02
146 
147 /* MACSEC_ENA_CFG */
148 #define MSCC_MS_ENA_CFG_CLK_ENA				BIT(0)
149 #define MSCC_MS_ENA_CFG_SW_RST				BIT(1)
150 #define MSCC_MS_ENA_CFG_MACSEC_BYPASS_ENA		BIT(8)
151 #define MSCC_MS_ENA_CFG_MACSEC_ENA			BIT(9)
152 #define MSCC_MS_ENA_CFG_MACSEC_SPEED_MODE(x)		((x) << 10)
153 #define MSCC_MS_ENA_CFG_MACSEC_SPEED_MODE_M		GENMASK(12, 10)
154 
155 /* MACSEC_FC_CFG */
156 #define MSCC_MS_FC_CFG_FCBUF_ENA			BIT(0)
157 #define MSCC_MS_FC_CFG_USE_PKT_EXPANSION_INDICATION	BIT(1)
158 #define MSCC_MS_FC_CFG_LOW_THRESH(x)			((x) << 4)
159 #define MSCC_MS_FC_CFG_LOW_THRESH_M			GENMASK(7, 4)
160 #define MSCC_MS_FC_CFG_HIGH_THRESH(x)			((x) << 8)
161 #define MSCC_MS_FC_CFG_HIGH_THRESH_M			GENMASK(11, 8)
162 #define MSCC_MS_FC_CFG_LOW_BYTES_VAL(x)			((x) << 12)
163 #define MSCC_MS_FC_CFG_LOW_BYTES_VAL_M			GENMASK(14, 12)
164 #define MSCC_MS_FC_CFG_HIGH_BYTES_VAL(x)		((x) << 16)
165 #define MSCC_MS_FC_CFG_HIGH_BYTES_VAL_M			GENMASK(18, 16)
166 
167 /* MSCC_MS_SAM_MAC_SA_MATCH_HI */
168 #define MSCC_MS_SAM_MAC_SA_MATCH_HI_ETYPE(x)		((x) << 16)
169 #define MSCC_MS_SAM_MAC_SA_MATCH_HI_ETYPE_M		GENMASK(31, 16)
170 
171 /* MACSEC_SAM_MISC_MATCH */
172 #define MSCC_MS_SAM_MISC_MATCH_VLAN_VALID		BIT(0)
173 #define MSCC_MS_SAM_MISC_MATCH_QINQ_FOUND		BIT(1)
174 #define MSCC_MS_SAM_MISC_MATCH_STAG_VALID		BIT(2)
175 #define MSCC_MS_SAM_MISC_MATCH_QTAG_VALID		BIT(3)
176 #define MSCC_MS_SAM_MISC_MATCH_VLAN_UP(x)		((x) << 4)
177 #define MSCC_MS_SAM_MISC_MATCH_VLAN_UP_M		GENMASK(6, 4)
178 #define MSCC_MS_SAM_MISC_MATCH_CONTROL_PACKET		BIT(7)
179 #define MSCC_MS_SAM_MISC_MATCH_UNTAGGED			BIT(8)
180 #define MSCC_MS_SAM_MISC_MATCH_TAGGED			BIT(9)
181 #define MSCC_MS_SAM_MISC_MATCH_BAD_TAG			BIT(10)
182 #define MSCC_MS_SAM_MISC_MATCH_KAY_TAG			BIT(11)
183 #define MSCC_MS_SAM_MISC_MATCH_SOURCE_PORT(x)		((x) << 12)
184 #define MSCC_MS_SAM_MISC_MATCH_SOURCE_PORT_M		GENMASK(13, 12)
185 #define MSCC_MS_SAM_MISC_MATCH_PRIORITY(x)		((x) << 16)
186 #define MSCC_MS_SAM_MISC_MATCH_PRIORITY_M		GENMASK(19, 16)
187 #define MSCC_MS_SAM_MISC_MATCH_AN(x)			((x) << 24)
188 #define MSCC_MS_SAM_MISC_MATCH_TCI(x)			((x) << 26)
189 
190 /* MACSEC_SAM_MASK */
191 #define MSCC_MS_SAM_MASK_MAC_SA_MASK(x)			(x)
192 #define MSCC_MS_SAM_MASK_MAC_SA_MASK_M			GENMASK(5, 0)
193 #define MSCC_MS_SAM_MASK_MAC_DA_MASK(x)			((x) << 6)
194 #define MSCC_MS_SAM_MASK_MAC_DA_MASK_M			GENMASK(11, 6)
195 #define MSCC_MS_SAM_MASK_MAC_ETYPE_MASK			BIT(12)
196 #define MSCC_MS_SAM_MASK_VLAN_VLD_MASK			BIT(13)
197 #define MSCC_MS_SAM_MASK_QINQ_FOUND_MASK		BIT(14)
198 #define MSCC_MS_SAM_MASK_STAG_VLD_MASK			BIT(15)
199 #define MSCC_MS_SAM_MASK_QTAG_VLD_MASK			BIT(16)
200 #define MSCC_MS_SAM_MASK_VLAN_UP_MASK			BIT(17)
201 #define MSCC_MS_SAM_MASK_VLAN_ID_MASK			BIT(18)
202 #define MSCC_MS_SAM_MASK_SOURCE_PORT_MASK		BIT(19)
203 #define MSCC_MS_SAM_MASK_CTL_PACKET_MASK		BIT(20)
204 #define MSCC_MS_SAM_MASK_VLAN_UP_INNER_MASK		BIT(21)
205 #define MSCC_MS_SAM_MASK_VLAN_ID_INNER_MASK		BIT(22)
206 #define MSCC_MS_SAM_MASK_SCI_MASK			BIT(23)
207 #define MSCC_MS_SAM_MASK_AN_MASK(x)			((x) << 24)
208 #define MSCC_MS_SAM_MASK_TCI_MASK(x)			((x) << 26)
209 
210 /* MACSEC_SAM_FLOW_CTRL_EGR */
211 #define MSCC_MS_SAM_FLOW_CTRL_FLOW_TYPE(x)		(x)
212 #define MSCC_MS_SAM_FLOW_CTRL_FLOW_TYPE_M		GENMASK(1, 0)
213 #define MSCC_MS_SAM_FLOW_CTRL_DEST_PORT(x)		((x) << 2)
214 #define MSCC_MS_SAM_FLOW_CTRL_DEST_PORT_M		GENMASK(3, 2)
215 #define MSCC_MS_SAM_FLOW_CTRL_RESV_4			BIT(4)
216 #define MSCC_MS_SAM_FLOW_CTRL_FLOW_CRYPT_AUTH		BIT(5)
217 #define MSCC_MS_SAM_FLOW_CTRL_DROP_ACTION(x)		((x) << 6)
218 #define MSCC_MS_SAM_FLOW_CTRL_DROP_ACTION_M		GENMASK(7, 6)
219 #define MSCC_MS_SAM_FLOW_CTRL_RESV_15_TO_8(x)		((x) << 8)
220 #define MSCC_MS_SAM_FLOW_CTRL_RESV_15_TO_8_M		GENMASK(15, 8)
221 #define MSCC_MS_SAM_FLOW_CTRL_PROTECT_FRAME		BIT(16)
222 #define MSCC_MS_SAM_FLOW_CTRL_REPLAY_PROTECT		BIT(16)
223 #define MSCC_MS_SAM_FLOW_CTRL_SA_IN_USE			BIT(17)
224 #define MSCC_MS_SAM_FLOW_CTRL_INCLUDE_SCI		BIT(18)
225 #define MSCC_MS_SAM_FLOW_CTRL_USE_ES			BIT(19)
226 #define MSCC_MS_SAM_FLOW_CTRL_USE_SCB			BIT(20)
227 #define MSCC_MS_SAM_FLOW_CTRL_VALIDATE_FRAMES(x)	((x) << 19)
228 #define MSCC_MS_SAM_FLOW_CTRL_TAG_BYPASS_SIZE(x)	((x) << 21)
229 #define MSCC_MS_SAM_FLOW_CTRL_TAG_BYPASS_SIZE_M		GENMASK(22, 21)
230 #define MSCC_MS_SAM_FLOW_CTRL_RESV_23			BIT(23)
231 #define MSCC_MS_SAM_FLOW_CTRL_CONFIDENTIALITY_OFFSET(x)	((x) << 24)
232 #define MSCC_MS_SAM_FLOW_CTRL_CONFIDENTIALITY_OFFSET_M	GENMASK(30, 24)
233 #define MSCC_MS_SAM_FLOW_CTRL_CONF_PROTECT		BIT(31)
234 
235 /* MACSEC_SAM_CP_TAG */
236 #define MSCC_MS_SAM_CP_TAG_MAP_TBL(x)			(x)
237 #define MSCC_MS_SAM_CP_TAG_MAP_TBL_M			GENMASK(23, 0)
238 #define MSCC_MS_SAM_CP_TAG_DEF_UP(x)			((x) << 24)
239 #define MSCC_MS_SAM_CP_TAG_DEF_UP_M			GENMASK(26, 24)
240 #define MSCC_MS_SAM_CP_TAG_STAG_UP_EN			BIT(27)
241 #define MSCC_MS_SAM_CP_TAG_QTAG_UP_EN			BIT(28)
242 #define MSCC_MS_SAM_CP_TAG_PARSE_QINQ			BIT(29)
243 #define MSCC_MS_SAM_CP_TAG_PARSE_STAG			BIT(30)
244 #define MSCC_MS_SAM_CP_TAG_PARSE_QTAG			BIT(31)
245 
246 /* MACSEC_SAM_NM_FLOW_NCP */
247 #define MSCC_MS_SAM_NM_FLOW_NCP_UNTAGGED_FLOW_TYPE(x)	(x)
248 #define MSCC_MS_SAM_NM_FLOW_NCP_UNTAGGED_DEST_PORT(x)	((x) << 2)
249 #define MSCC_MS_SAM_NM_FLOW_NCP_UNTAGGED_DROP_ACTION(x)	((x) << 6)
250 #define MSCC_MS_SAM_NM_FLOW_NCP_TAGGED_FLOW_TYPE(x)	((x) << 8)
251 #define MSCC_MS_SAM_NM_FLOW_NCP_TAGGED_DEST_PORT(x)	((x) << 10)
252 #define MSCC_MS_SAM_NM_FLOW_NCP_TAGGED_DROP_ACTION(x)	((x) << 14)
253 #define MSCC_MS_SAM_NM_FLOW_NCP_BADTAG_FLOW_TYPE(x)	((x) << 16)
254 #define MSCC_MS_SAM_NM_FLOW_NCP_BADTAG_DEST_PORT(x)	((x) << 18)
255 #define MSCC_MS_SAM_NM_FLOW_NCP_BADTAG_DROP_ACTION(x)	((x) << 22)
256 #define MSCC_MS_SAM_NM_FLOW_NCP_KAY_FLOW_TYPE(x)	((x) << 24)
257 #define MSCC_MS_SAM_NM_FLOW_NCP_KAY_DEST_PORT(x)	((x) << 26)
258 #define MSCC_MS_SAM_NM_FLOW_NCP_KAY_DROP_ACTION(x)	((x) << 30)
259 
260 /* MACSEC_SAM_NM_FLOW_CP */
261 #define MSCC_MS_SAM_NM_FLOW_CP_UNTAGGED_FLOW_TYPE(x)	(x)
262 #define MSCC_MS_SAM_NM_FLOW_CP_UNTAGGED_DEST_PORT(x)	((x) << 2)
263 #define MSCC_MS_SAM_NM_FLOW_CP_UNTAGGED_DROP_ACTION(x)	((x) << 6)
264 #define MSCC_MS_SAM_NM_FLOW_CP_TAGGED_FLOW_TYPE(x)	((x) << 8)
265 #define MSCC_MS_SAM_NM_FLOW_CP_TAGGED_DEST_PORT(x)	((x) << 10)
266 #define MSCC_MS_SAM_NM_FLOW_CP_TAGGED_DROP_ACTION(x)	((x) << 14)
267 #define MSCC_MS_SAM_NM_FLOW_CP_BADTAG_FLOW_TYPE(x)	((x) << 16)
268 #define MSCC_MS_SAM_NM_FLOW_CP_BADTAG_DEST_PORT(x)	((x) << 18)
269 #define MSCC_MS_SAM_NM_FLOW_CP_BADTAG_DROP_ACTION(x)	((x) << 22)
270 #define MSCC_MS_SAM_NM_FLOW_CP_KAY_FLOW_TYPE(x)		((x) << 24)
271 #define MSCC_MS_SAM_NM_FLOW_CP_KAY_DEST_PORT(x)		((x) << 26)
272 #define MSCC_MS_SAM_NM_FLOW_CP_KAY_DROP_ACTION(x)	((x) << 30)
273 
274 /* MACSEC_MISC_CONTROL */
275 #define MSCC_MS_MISC_CONTROL_MC_LATENCY_FIX(x)		(x)
276 #define MSCC_MS_MISC_CONTROL_MC_LATENCY_FIX_M		GENMASK(5, 0)
277 #define MSCC_MS_MISC_CONTROL_STATIC_BYPASS		BIT(8)
278 #define MSCC_MS_MISC_CONTROL_NM_MACSEC_EN		BIT(9)
279 #define MSCC_MS_MISC_CONTROL_VALIDATE_FRAMES(x)		((x) << 10)
280 #define MSCC_MS_MISC_CONTROL_VALIDATE_FRAMES_M		GENMASK(11, 10)
281 #define MSCC_MS_MISC_CONTROL_XFORM_REC_SIZE(x)		((x) << 24)
282 #define MSCC_MS_MISC_CONTROL_XFORM_REC_SIZE_M		GENMASK(25, 24)
283 
284 /* MACSEC_COUNT_CONTROL */
285 #define MSCC_MS_COUNT_CONTROL_RESET_ALL			BIT(0)
286 #define MSCC_MS_COUNT_CONTROL_DEBUG_ACCESS		BIT(1)
287 #define MSCC_MS_COUNT_CONTROL_SATURATE_CNTRS		BIT(2)
288 #define MSCC_MS_COUNT_CONTROL_AUTO_CNTR_RESET		BIT(3)
289 
290 /* MACSEC_PARAMS2_IG_CC_CONTROL */
291 #define MSCC_MS_PARAMS2_IG_CC_CONTROL_NON_MATCH_CTRL_ACT	BIT(14)
292 #define MSCC_MS_PARAMS2_IG_CC_CONTROL_NON_MATCH_ACT	BIT(15)
293 
294 /* MACSEC_PARAMS2_IG_CP_TAG */
295 #define MSCC_MS_PARAMS2_IG_CP_TAG_MAP_TBL(x)		(x)
296 #define MSCC_MS_PARAMS2_IG_CP_TAG_MAP_TBL_M		GENMASK(23, 0)
297 #define MSCC_MS_PARAMS2_IG_CP_TAG_DEF_UP(x)		((x) << 24)
298 #define MSCC_MS_PARAMS2_IG_CP_TAG_DEF_UP_M		GENMASK(26, 24)
299 #define MSCC_MS_PARAMS2_IG_CP_TAG_STAG_UP_EN		BIT(27)
300 #define MSCC_MS_PARAMS2_IG_CP_TAG_QTAG_UP_EN		BIT(28)
301 #define MSCC_MS_PARAMS2_IG_CP_TAG_PARSE_QINQ		BIT(29)
302 #define MSCC_MS_PARAMS2_IG_CP_TAG_PARSE_STAG		BIT(30)
303 #define MSCC_MS_PARAMS2_IG_CP_TAG_PARSE_QTAG		BIT(31)
304 
305 /* MACSEC_VLAN_MTU_CHECK */
306 #define MSCC_MS_VLAN_MTU_CHECK_MTU_COMPARE(x)		(x)
307 #define MSCC_MS_VLAN_MTU_CHECK_MTU_COMPARE_M		GENMASK(14, 0)
308 #define MSCC_MS_VLAN_MTU_CHECK_MTU_COMP_DROP		BIT(15)
309 
310 /* MACSEC_NON_VLAN_MTU_CHECK */
311 #define MSCC_MS_NON_VLAN_MTU_CHECK_NV_MTU_COMPARE(x)	(x)
312 #define MSCC_MS_NON_VLAN_MTU_CHECK_NV_MTU_COMPARE_M	GENMASK(14, 0)
313 #define MSCC_MS_NON_VLAN_MTU_CHECK_NV_MTU_COMP_DROP	BIT(15)
314 
315 /* MACSEC_PP_CTRL */
316 #define MSCC_MS_PP_CTRL_MACSEC_OCTET_INCR_MODE		BIT(0)
317 
318 /* MACSEC_INTR_CTRL_STATUS */
319 #define MSCC_MS_INTR_CTRL_STATUS_INTR_CLR_STATUS(x)	(x)
320 #define MSCC_MS_INTR_CTRL_STATUS_INTR_CLR_STATUS_M	GENMASK(15, 0)
321 #define MSCC_MS_INTR_CTRL_STATUS_INTR_ENABLE(x)		((x) << 16)
322 #define MSCC_MS_INTR_CTRL_STATUS_INTR_ENABLE_M		GENMASK(31, 16)
323 #define MACSEC_INTR_CTRL_STATUS_ROLLOVER		BIT(5)
324 
325 #endif /* _MSCC_PHY_MACSEC_H_ */
326