1 // SPDX-License-Identifier: (GPL-2.0 OR MIT) 2 /* 3 * Driver for Microsemi VSC85xx PHYs - MACsec support 4 * 5 * Author: Antoine Tenart 6 * License: Dual MIT/GPL 7 * Copyright (c) 2020 Microsemi Corporation 8 */ 9 10 #include <linux/phy.h> 11 #include <dt-bindings/net/mscc-phy-vsc8531.h> 12 13 #include <crypto/aes.h> 14 15 #include <net/macsec.h> 16 17 #include "mscc.h" 18 #include "mscc_mac.h" 19 #include "mscc_macsec.h" 20 #include "mscc_fc_buffer.h" 21 22 static u32 vsc8584_macsec_phy_read(struct phy_device *phydev, 23 enum macsec_bank bank, u32 reg) 24 { 25 u32 val, val_l = 0, val_h = 0; 26 unsigned long deadline; 27 int rc; 28 29 rc = phy_select_page(phydev, MSCC_PHY_PAGE_MACSEC); 30 if (rc < 0) 31 goto failed; 32 33 __phy_write(phydev, MSCC_EXT_PAGE_MACSEC_20, 34 MSCC_PHY_MACSEC_20_TARGET(bank >> 2)); 35 36 if (bank >> 2 == 0x1) 37 /* non-MACsec access */ 38 bank &= 0x3; 39 else 40 bank = 0; 41 42 __phy_write(phydev, MSCC_EXT_PAGE_MACSEC_19, 43 MSCC_PHY_MACSEC_19_CMD | MSCC_PHY_MACSEC_19_READ | 44 MSCC_PHY_MACSEC_19_REG_ADDR(reg) | 45 MSCC_PHY_MACSEC_19_TARGET(bank)); 46 47 deadline = jiffies + msecs_to_jiffies(PROC_CMD_NCOMPLETED_TIMEOUT_MS); 48 do { 49 val = __phy_read(phydev, MSCC_EXT_PAGE_MACSEC_19); 50 } while (time_before(jiffies, deadline) && !(val & MSCC_PHY_MACSEC_19_CMD)); 51 52 val_l = __phy_read(phydev, MSCC_EXT_PAGE_MACSEC_17); 53 val_h = __phy_read(phydev, MSCC_EXT_PAGE_MACSEC_18); 54 55 failed: 56 phy_restore_page(phydev, rc, rc); 57 58 return (val_h << 16) | val_l; 59 } 60 61 static void vsc8584_macsec_phy_write(struct phy_device *phydev, 62 enum macsec_bank bank, u32 reg, u32 val) 63 { 64 unsigned long deadline; 65 int rc; 66 67 rc = phy_select_page(phydev, MSCC_PHY_PAGE_MACSEC); 68 if (rc < 0) 69 goto failed; 70 71 __phy_write(phydev, MSCC_EXT_PAGE_MACSEC_20, 72 MSCC_PHY_MACSEC_20_TARGET(bank >> 2)); 73 74 if ((bank >> 2 == 0x1) || (bank >> 2 == 0x3)) 75 bank &= 0x3; 76 else 77 /* MACsec access */ 78 bank = 0; 79 80 __phy_write(phydev, MSCC_EXT_PAGE_MACSEC_17, (u16)val); 81 __phy_write(phydev, MSCC_EXT_PAGE_MACSEC_18, (u16)(val >> 16)); 82 83 __phy_write(phydev, MSCC_EXT_PAGE_MACSEC_19, 84 MSCC_PHY_MACSEC_19_CMD | MSCC_PHY_MACSEC_19_REG_ADDR(reg) | 85 MSCC_PHY_MACSEC_19_TARGET(bank)); 86 87 deadline = jiffies + msecs_to_jiffies(PROC_CMD_NCOMPLETED_TIMEOUT_MS); 88 do { 89 val = __phy_read(phydev, MSCC_EXT_PAGE_MACSEC_19); 90 } while (time_before(jiffies, deadline) && !(val & MSCC_PHY_MACSEC_19_CMD)); 91 92 failed: 93 phy_restore_page(phydev, rc, rc); 94 } 95 96 static void vsc8584_macsec_classification(struct phy_device *phydev, 97 enum macsec_bank bank) 98 { 99 /* enable VLAN tag parsing */ 100 vsc8584_macsec_phy_write(phydev, bank, MSCC_MS_SAM_CP_TAG, 101 MSCC_MS_SAM_CP_TAG_PARSE_STAG | 102 MSCC_MS_SAM_CP_TAG_PARSE_QTAG | 103 MSCC_MS_SAM_CP_TAG_PARSE_QINQ); 104 } 105 106 static void vsc8584_macsec_flow_default_action(struct phy_device *phydev, 107 enum macsec_bank bank, 108 bool block) 109 { 110 u32 port = (bank == MACSEC_INGR) ? 111 MSCC_MS_PORT_UNCONTROLLED : MSCC_MS_PORT_COMMON; 112 u32 action = MSCC_MS_FLOW_BYPASS; 113 114 if (block) 115 action = MSCC_MS_FLOW_DROP; 116 117 vsc8584_macsec_phy_write(phydev, bank, MSCC_MS_SAM_NM_FLOW_NCP, 118 /* MACsec untagged */ 119 MSCC_MS_SAM_NM_FLOW_NCP_UNTAGGED_FLOW_TYPE(action) | 120 MSCC_MS_SAM_NM_FLOW_NCP_UNTAGGED_DROP_ACTION(MSCC_MS_ACTION_DROP) | 121 MSCC_MS_SAM_NM_FLOW_NCP_UNTAGGED_DEST_PORT(port) | 122 /* MACsec tagged */ 123 MSCC_MS_SAM_NM_FLOW_NCP_TAGGED_FLOW_TYPE(action) | 124 MSCC_MS_SAM_NM_FLOW_NCP_TAGGED_DROP_ACTION(MSCC_MS_ACTION_DROP) | 125 MSCC_MS_SAM_NM_FLOW_NCP_TAGGED_DEST_PORT(port) | 126 /* Bad tag */ 127 MSCC_MS_SAM_NM_FLOW_NCP_BADTAG_FLOW_TYPE(action) | 128 MSCC_MS_SAM_NM_FLOW_NCP_BADTAG_DROP_ACTION(MSCC_MS_ACTION_DROP) | 129 MSCC_MS_SAM_NM_FLOW_NCP_BADTAG_DEST_PORT(port) | 130 /* Kay tag */ 131 MSCC_MS_SAM_NM_FLOW_NCP_KAY_FLOW_TYPE(action) | 132 MSCC_MS_SAM_NM_FLOW_NCP_KAY_DROP_ACTION(MSCC_MS_ACTION_DROP) | 133 MSCC_MS_SAM_NM_FLOW_NCP_KAY_DEST_PORT(port)); 134 vsc8584_macsec_phy_write(phydev, bank, MSCC_MS_SAM_NM_FLOW_CP, 135 /* MACsec untagged */ 136 MSCC_MS_SAM_NM_FLOW_NCP_UNTAGGED_FLOW_TYPE(action) | 137 MSCC_MS_SAM_NM_FLOW_CP_UNTAGGED_DROP_ACTION(MSCC_MS_ACTION_DROP) | 138 MSCC_MS_SAM_NM_FLOW_CP_UNTAGGED_DEST_PORT(port) | 139 /* MACsec tagged */ 140 MSCC_MS_SAM_NM_FLOW_NCP_TAGGED_FLOW_TYPE(action) | 141 MSCC_MS_SAM_NM_FLOW_CP_TAGGED_DROP_ACTION(MSCC_MS_ACTION_DROP) | 142 MSCC_MS_SAM_NM_FLOW_CP_TAGGED_DEST_PORT(port) | 143 /* Bad tag */ 144 MSCC_MS_SAM_NM_FLOW_NCP_BADTAG_FLOW_TYPE(action) | 145 MSCC_MS_SAM_NM_FLOW_CP_BADTAG_DROP_ACTION(MSCC_MS_ACTION_DROP) | 146 MSCC_MS_SAM_NM_FLOW_CP_BADTAG_DEST_PORT(port) | 147 /* Kay tag */ 148 MSCC_MS_SAM_NM_FLOW_NCP_KAY_FLOW_TYPE(action) | 149 MSCC_MS_SAM_NM_FLOW_CP_KAY_DROP_ACTION(MSCC_MS_ACTION_DROP) | 150 MSCC_MS_SAM_NM_FLOW_CP_KAY_DEST_PORT(port)); 151 } 152 153 static void vsc8584_macsec_integrity_checks(struct phy_device *phydev, 154 enum macsec_bank bank) 155 { 156 u32 val; 157 158 if (bank != MACSEC_INGR) 159 return; 160 161 /* Set default rules to pass unmatched frames */ 162 val = vsc8584_macsec_phy_read(phydev, bank, 163 MSCC_MS_PARAMS2_IG_CC_CONTROL); 164 val |= MSCC_MS_PARAMS2_IG_CC_CONTROL_NON_MATCH_CTRL_ACT | 165 MSCC_MS_PARAMS2_IG_CC_CONTROL_NON_MATCH_ACT; 166 vsc8584_macsec_phy_write(phydev, bank, MSCC_MS_PARAMS2_IG_CC_CONTROL, 167 val); 168 169 vsc8584_macsec_phy_write(phydev, bank, MSCC_MS_PARAMS2_IG_CP_TAG, 170 MSCC_MS_PARAMS2_IG_CP_TAG_PARSE_STAG | 171 MSCC_MS_PARAMS2_IG_CP_TAG_PARSE_QTAG | 172 MSCC_MS_PARAMS2_IG_CP_TAG_PARSE_QINQ); 173 } 174 175 static void vsc8584_macsec_block_init(struct phy_device *phydev, 176 enum macsec_bank bank) 177 { 178 u32 val; 179 int i; 180 181 vsc8584_macsec_phy_write(phydev, bank, MSCC_MS_ENA_CFG, 182 MSCC_MS_ENA_CFG_SW_RST | 183 MSCC_MS_ENA_CFG_MACSEC_BYPASS_ENA); 184 185 /* Set the MACsec block out of s/w reset and enable clocks */ 186 vsc8584_macsec_phy_write(phydev, bank, MSCC_MS_ENA_CFG, 187 MSCC_MS_ENA_CFG_CLK_ENA); 188 189 vsc8584_macsec_phy_write(phydev, bank, MSCC_MS_STATUS_CONTEXT_CTRL, 190 bank == MACSEC_INGR ? 0xe5880214 : 0xe5880218); 191 vsc8584_macsec_phy_write(phydev, bank, MSCC_MS_MISC_CONTROL, 192 MSCC_MS_MISC_CONTROL_MC_LATENCY_FIX(bank == MACSEC_INGR ? 57 : 40) | 193 MSCC_MS_MISC_CONTROL_XFORM_REC_SIZE(bank == MACSEC_INGR ? 1 : 2)); 194 195 /* Clear the counters */ 196 val = vsc8584_macsec_phy_read(phydev, bank, MSCC_MS_COUNT_CONTROL); 197 val |= MSCC_MS_COUNT_CONTROL_AUTO_CNTR_RESET; 198 vsc8584_macsec_phy_write(phydev, bank, MSCC_MS_COUNT_CONTROL, val); 199 200 /* Enable octet increment mode */ 201 vsc8584_macsec_phy_write(phydev, bank, MSCC_MS_PP_CTRL, 202 MSCC_MS_PP_CTRL_MACSEC_OCTET_INCR_MODE); 203 204 vsc8584_macsec_phy_write(phydev, bank, MSCC_MS_BLOCK_CTX_UPDATE, 0x3); 205 206 val = vsc8584_macsec_phy_read(phydev, bank, MSCC_MS_COUNT_CONTROL); 207 val |= MSCC_MS_COUNT_CONTROL_RESET_ALL; 208 vsc8584_macsec_phy_write(phydev, bank, MSCC_MS_COUNT_CONTROL, val); 209 210 /* Set the MTU */ 211 vsc8584_macsec_phy_write(phydev, bank, MSCC_MS_NON_VLAN_MTU_CHECK, 212 MSCC_MS_NON_VLAN_MTU_CHECK_NV_MTU_COMPARE(32761) | 213 MSCC_MS_NON_VLAN_MTU_CHECK_NV_MTU_COMP_DROP); 214 215 for (i = 0; i < 8; i++) 216 vsc8584_macsec_phy_write(phydev, bank, MSCC_MS_VLAN_MTU_CHECK(i), 217 MSCC_MS_VLAN_MTU_CHECK_MTU_COMPARE(32761) | 218 MSCC_MS_VLAN_MTU_CHECK_MTU_COMP_DROP); 219 220 if (bank == MACSEC_EGR) { 221 val = vsc8584_macsec_phy_read(phydev, bank, MSCC_MS_INTR_CTRL_STATUS); 222 val &= ~MSCC_MS_INTR_CTRL_STATUS_INTR_ENABLE_M; 223 vsc8584_macsec_phy_write(phydev, bank, MSCC_MS_INTR_CTRL_STATUS, val); 224 225 vsc8584_macsec_phy_write(phydev, bank, MSCC_MS_FC_CFG, 226 MSCC_MS_FC_CFG_FCBUF_ENA | 227 MSCC_MS_FC_CFG_LOW_THRESH(0x1) | 228 MSCC_MS_FC_CFG_HIGH_THRESH(0x4) | 229 MSCC_MS_FC_CFG_LOW_BYTES_VAL(0x4) | 230 MSCC_MS_FC_CFG_HIGH_BYTES_VAL(0x6)); 231 } 232 233 vsc8584_macsec_classification(phydev, bank); 234 vsc8584_macsec_flow_default_action(phydev, bank, false); 235 vsc8584_macsec_integrity_checks(phydev, bank); 236 237 /* Enable the MACsec block */ 238 vsc8584_macsec_phy_write(phydev, bank, MSCC_MS_ENA_CFG, 239 MSCC_MS_ENA_CFG_CLK_ENA | 240 MSCC_MS_ENA_CFG_MACSEC_ENA | 241 MSCC_MS_ENA_CFG_MACSEC_SPEED_MODE(0x5)); 242 } 243 244 static void vsc8584_macsec_mac_init(struct phy_device *phydev, 245 enum macsec_bank bank) 246 { 247 u32 val; 248 int i; 249 250 /* Clear host & line stats */ 251 for (i = 0; i < 36; i++) 252 vsc8584_macsec_phy_write(phydev, bank, 0x1c + i, 0); 253 254 val = vsc8584_macsec_phy_read(phydev, bank, 255 MSCC_MAC_PAUSE_CFG_TX_FRAME_CTRL); 256 val &= ~MSCC_MAC_PAUSE_CFG_TX_FRAME_CTRL_PAUSE_MODE_M; 257 val |= MSCC_MAC_PAUSE_CFG_TX_FRAME_CTRL_PAUSE_MODE(2) | 258 MSCC_MAC_PAUSE_CFG_TX_FRAME_CTRL_PAUSE_VALUE(0xffff); 259 vsc8584_macsec_phy_write(phydev, bank, 260 MSCC_MAC_PAUSE_CFG_TX_FRAME_CTRL, val); 261 262 val = vsc8584_macsec_phy_read(phydev, bank, 263 MSCC_MAC_PAUSE_CFG_TX_FRAME_CTRL_2); 264 val |= 0xffff; 265 vsc8584_macsec_phy_write(phydev, bank, 266 MSCC_MAC_PAUSE_CFG_TX_FRAME_CTRL_2, val); 267 268 val = vsc8584_macsec_phy_read(phydev, bank, 269 MSCC_MAC_PAUSE_CFG_RX_FRAME_CTRL); 270 if (bank == HOST_MAC) 271 val |= MSCC_MAC_PAUSE_CFG_RX_FRAME_CTRL_PAUSE_TIMER_ENA | 272 MSCC_MAC_PAUSE_CFG_RX_FRAME_CTRL_PAUSE_FRAME_DROP_ENA; 273 else 274 val |= MSCC_MAC_PAUSE_CFG_RX_FRAME_CTRL_PAUSE_REACT_ENA | 275 MSCC_MAC_PAUSE_CFG_RX_FRAME_CTRL_PAUSE_FRAME_DROP_ENA | 276 MSCC_MAC_PAUSE_CFG_RX_FRAME_CTRL_PAUSE_MODE | 277 MSCC_MAC_PAUSE_CFG_RX_FRAME_CTRL_EARLY_PAUSE_DETECT_ENA; 278 vsc8584_macsec_phy_write(phydev, bank, 279 MSCC_MAC_PAUSE_CFG_RX_FRAME_CTRL, val); 280 281 vsc8584_macsec_phy_write(phydev, bank, MSCC_MAC_CFG_PKTINF_CFG, 282 MSCC_MAC_CFG_PKTINF_CFG_STRIP_FCS_ENA | 283 MSCC_MAC_CFG_PKTINF_CFG_INSERT_FCS_ENA | 284 MSCC_MAC_CFG_PKTINF_CFG_LPI_RELAY_ENA | 285 MSCC_MAC_CFG_PKTINF_CFG_STRIP_PREAMBLE_ENA | 286 MSCC_MAC_CFG_PKTINF_CFG_INSERT_PREAMBLE_ENA | 287 (bank == HOST_MAC ? 288 MSCC_MAC_CFG_PKTINF_CFG_ENABLE_TX_PADDING : 0) | 289 (IS_ENABLED(CONFIG_NETWORK_PHY_TIMESTAMPING) ? 290 MSCC_MAC_CFG_PKTINF_CFG_MACSEC_BYPASS_NUM_PTP_STALL_CLKS(0x8) : 0)); 291 292 val = vsc8584_macsec_phy_read(phydev, bank, MSCC_MAC_CFG_MODE_CFG); 293 val &= ~MSCC_MAC_CFG_MODE_CFG_DISABLE_DIC; 294 vsc8584_macsec_phy_write(phydev, bank, MSCC_MAC_CFG_MODE_CFG, val); 295 296 val = vsc8584_macsec_phy_read(phydev, bank, MSCC_MAC_CFG_MAXLEN_CFG); 297 val &= ~MSCC_MAC_CFG_MAXLEN_CFG_MAX_LEN_M; 298 val |= MSCC_MAC_CFG_MAXLEN_CFG_MAX_LEN(10240); 299 vsc8584_macsec_phy_write(phydev, bank, MSCC_MAC_CFG_MAXLEN_CFG, val); 300 301 vsc8584_macsec_phy_write(phydev, bank, MSCC_MAC_CFG_ADV_CHK_CFG, 302 MSCC_MAC_CFG_ADV_CHK_CFG_SFD_CHK_ENA | 303 MSCC_MAC_CFG_ADV_CHK_CFG_PRM_CHK_ENA | 304 MSCC_MAC_CFG_ADV_CHK_CFG_OOR_ERR_ENA | 305 MSCC_MAC_CFG_ADV_CHK_CFG_INR_ERR_ENA); 306 307 val = vsc8584_macsec_phy_read(phydev, bank, MSCC_MAC_CFG_LFS_CFG); 308 val &= ~MSCC_MAC_CFG_LFS_CFG_LFS_MODE_ENA; 309 vsc8584_macsec_phy_write(phydev, bank, MSCC_MAC_CFG_LFS_CFG, val); 310 311 vsc8584_macsec_phy_write(phydev, bank, MSCC_MAC_CFG_ENA_CFG, 312 MSCC_MAC_CFG_ENA_CFG_RX_CLK_ENA | 313 MSCC_MAC_CFG_ENA_CFG_TX_CLK_ENA | 314 MSCC_MAC_CFG_ENA_CFG_RX_ENA | 315 MSCC_MAC_CFG_ENA_CFG_TX_ENA); 316 } 317 318 /* Must be called with mdio_lock taken */ 319 static int __vsc8584_macsec_init(struct phy_device *phydev) 320 { 321 struct vsc8531_private *priv = phydev->priv; 322 enum macsec_bank proc_bank; 323 u32 val; 324 325 vsc8584_macsec_block_init(phydev, MACSEC_INGR); 326 vsc8584_macsec_block_init(phydev, MACSEC_EGR); 327 vsc8584_macsec_mac_init(phydev, HOST_MAC); 328 vsc8584_macsec_mac_init(phydev, LINE_MAC); 329 330 vsc8584_macsec_phy_write(phydev, FC_BUFFER, 331 MSCC_FCBUF_FC_READ_THRESH_CFG, 332 MSCC_FCBUF_FC_READ_THRESH_CFG_TX_THRESH(4) | 333 MSCC_FCBUF_FC_READ_THRESH_CFG_RX_THRESH(5)); 334 335 val = vsc8584_macsec_phy_read(phydev, FC_BUFFER, MSCC_FCBUF_MODE_CFG); 336 val |= MSCC_FCBUF_MODE_CFG_PAUSE_GEN_ENA | 337 MSCC_FCBUF_MODE_CFG_RX_PPM_RATE_ADAPT_ENA | 338 MSCC_FCBUF_MODE_CFG_TX_PPM_RATE_ADAPT_ENA; 339 vsc8584_macsec_phy_write(phydev, FC_BUFFER, MSCC_FCBUF_MODE_CFG, val); 340 341 vsc8584_macsec_phy_write(phydev, FC_BUFFER, MSCC_FCBUF_PPM_RATE_ADAPT_THRESH_CFG, 342 MSCC_FCBUF_PPM_RATE_ADAPT_THRESH_CFG_TX_THRESH(8) | 343 MSCC_FCBUF_PPM_RATE_ADAPT_THRESH_CFG_TX_OFFSET(9)); 344 345 val = vsc8584_macsec_phy_read(phydev, FC_BUFFER, 346 MSCC_FCBUF_TX_DATA_QUEUE_CFG); 347 val &= ~(MSCC_FCBUF_TX_DATA_QUEUE_CFG_START_M | 348 MSCC_FCBUF_TX_DATA_QUEUE_CFG_END_M); 349 val |= MSCC_FCBUF_TX_DATA_QUEUE_CFG_START(0) | 350 MSCC_FCBUF_TX_DATA_QUEUE_CFG_END(5119); 351 vsc8584_macsec_phy_write(phydev, FC_BUFFER, 352 MSCC_FCBUF_TX_DATA_QUEUE_CFG, val); 353 354 val = vsc8584_macsec_phy_read(phydev, FC_BUFFER, MSCC_FCBUF_ENA_CFG); 355 val |= MSCC_FCBUF_ENA_CFG_TX_ENA | MSCC_FCBUF_ENA_CFG_RX_ENA; 356 vsc8584_macsec_phy_write(phydev, FC_BUFFER, MSCC_FCBUF_ENA_CFG, val); 357 358 proc_bank = (priv->addr < 2) ? PROC_0 : PROC_2; 359 360 val = vsc8584_macsec_phy_read(phydev, proc_bank, 361 MSCC_PROC_IP_1588_TOP_CFG_STAT_MODE_CTL); 362 val &= ~MSCC_PROC_IP_1588_TOP_CFG_STAT_MODE_CTL_PROTOCOL_MODE_M; 363 val |= MSCC_PROC_IP_1588_TOP_CFG_STAT_MODE_CTL_PROTOCOL_MODE(4); 364 vsc8584_macsec_phy_write(phydev, proc_bank, 365 MSCC_PROC_IP_1588_TOP_CFG_STAT_MODE_CTL, val); 366 367 return 0; 368 } 369 370 static void vsc8584_macsec_flow(struct phy_device *phydev, 371 struct macsec_flow *flow) 372 { 373 struct vsc8531_private *priv = phydev->priv; 374 enum macsec_bank bank = flow->bank; 375 u32 val, match = 0, mask = 0, action = 0, idx = flow->index; 376 377 if (flow->match.tagged) 378 match |= MSCC_MS_SAM_MISC_MATCH_TAGGED; 379 if (flow->match.untagged) 380 match |= MSCC_MS_SAM_MISC_MATCH_UNTAGGED; 381 382 if (bank == MACSEC_INGR && flow->assoc_num >= 0) { 383 match |= MSCC_MS_SAM_MISC_MATCH_AN(flow->assoc_num); 384 mask |= MSCC_MS_SAM_MASK_AN_MASK(0x3); 385 } 386 387 if (bank == MACSEC_INGR && flow->match.sci && flow->rx_sa->sc->sci) { 388 u64 sci = (__force u64)flow->rx_sa->sc->sci; 389 390 match |= MSCC_MS_SAM_MISC_MATCH_TCI(BIT(3)); 391 mask |= MSCC_MS_SAM_MASK_TCI_MASK(BIT(3)) | 392 MSCC_MS_SAM_MASK_SCI_MASK; 393 394 vsc8584_macsec_phy_write(phydev, bank, MSCC_MS_SAM_MATCH_SCI_LO(idx), 395 lower_32_bits(sci)); 396 vsc8584_macsec_phy_write(phydev, bank, MSCC_MS_SAM_MATCH_SCI_HI(idx), 397 upper_32_bits(sci)); 398 } 399 400 if (flow->match.etype) { 401 mask |= MSCC_MS_SAM_MASK_MAC_ETYPE_MASK; 402 403 vsc8584_macsec_phy_write(phydev, bank, MSCC_MS_SAM_MAC_SA_MATCH_HI(idx), 404 MSCC_MS_SAM_MAC_SA_MATCH_HI_ETYPE((__force u32)htons(flow->etype))); 405 } 406 407 match |= MSCC_MS_SAM_MISC_MATCH_PRIORITY(flow->priority); 408 409 vsc8584_macsec_phy_write(phydev, bank, MSCC_MS_SAM_MISC_MATCH(idx), match); 410 vsc8584_macsec_phy_write(phydev, bank, MSCC_MS_SAM_MASK(idx), mask); 411 412 /* Action for matching packets */ 413 if (flow->action.drop) 414 action = MSCC_MS_FLOW_DROP; 415 else if (flow->action.bypass || flow->port == MSCC_MS_PORT_UNCONTROLLED) 416 action = MSCC_MS_FLOW_BYPASS; 417 else 418 action = (bank == MACSEC_INGR) ? 419 MSCC_MS_FLOW_INGRESS : MSCC_MS_FLOW_EGRESS; 420 421 val = MSCC_MS_SAM_FLOW_CTRL_FLOW_TYPE(action) | 422 MSCC_MS_SAM_FLOW_CTRL_DROP_ACTION(MSCC_MS_ACTION_DROP) | 423 MSCC_MS_SAM_FLOW_CTRL_DEST_PORT(flow->port); 424 425 if (action == MSCC_MS_FLOW_BYPASS) 426 goto write_ctrl; 427 428 if (bank == MACSEC_INGR) { 429 if (priv->secy->replay_protect) 430 val |= MSCC_MS_SAM_FLOW_CTRL_REPLAY_PROTECT; 431 if (priv->secy->validate_frames == MACSEC_VALIDATE_STRICT) 432 val |= MSCC_MS_SAM_FLOW_CTRL_VALIDATE_FRAMES(MSCC_MS_VALIDATE_STRICT); 433 else if (priv->secy->validate_frames == MACSEC_VALIDATE_CHECK) 434 val |= MSCC_MS_SAM_FLOW_CTRL_VALIDATE_FRAMES(MSCC_MS_VALIDATE_CHECK); 435 } else if (bank == MACSEC_EGR) { 436 if (priv->secy->protect_frames) 437 val |= MSCC_MS_SAM_FLOW_CTRL_PROTECT_FRAME; 438 if (priv->secy->tx_sc.encrypt) 439 val |= MSCC_MS_SAM_FLOW_CTRL_CONF_PROTECT; 440 if (priv->secy->tx_sc.send_sci) 441 val |= MSCC_MS_SAM_FLOW_CTRL_INCLUDE_SCI; 442 } 443 444 write_ctrl: 445 vsc8584_macsec_phy_write(phydev, bank, MSCC_MS_SAM_FLOW_CTRL(idx), val); 446 } 447 448 static struct macsec_flow *vsc8584_macsec_find_flow(struct macsec_context *ctx, 449 enum macsec_bank bank) 450 { 451 struct vsc8531_private *priv = ctx->phydev->priv; 452 struct macsec_flow *pos, *tmp; 453 454 list_for_each_entry_safe(pos, tmp, &priv->macsec_flows, list) 455 if (pos->assoc_num == ctx->sa.assoc_num && pos->bank == bank) 456 return pos; 457 458 return ERR_PTR(-ENOENT); 459 } 460 461 static void vsc8584_macsec_flow_enable(struct phy_device *phydev, 462 struct macsec_flow *flow) 463 { 464 enum macsec_bank bank = flow->bank; 465 u32 val, idx = flow->index; 466 467 if ((flow->bank == MACSEC_INGR && flow->rx_sa && !flow->rx_sa->active) || 468 (flow->bank == MACSEC_EGR && flow->tx_sa && !flow->tx_sa->active)) 469 return; 470 471 /* Enable */ 472 vsc8584_macsec_phy_write(phydev, bank, MSCC_MS_SAM_ENTRY_SET1, BIT(idx)); 473 474 /* Set in-use */ 475 val = vsc8584_macsec_phy_read(phydev, bank, MSCC_MS_SAM_FLOW_CTRL(idx)); 476 val |= MSCC_MS_SAM_FLOW_CTRL_SA_IN_USE; 477 vsc8584_macsec_phy_write(phydev, bank, MSCC_MS_SAM_FLOW_CTRL(idx), val); 478 } 479 480 static void vsc8584_macsec_flow_disable(struct phy_device *phydev, 481 struct macsec_flow *flow) 482 { 483 enum macsec_bank bank = flow->bank; 484 u32 val, idx = flow->index; 485 486 /* Disable */ 487 vsc8584_macsec_phy_write(phydev, bank, MSCC_MS_SAM_ENTRY_CLEAR1, BIT(idx)); 488 489 /* Clear in-use */ 490 val = vsc8584_macsec_phy_read(phydev, bank, MSCC_MS_SAM_FLOW_CTRL(idx)); 491 val &= ~MSCC_MS_SAM_FLOW_CTRL_SA_IN_USE; 492 vsc8584_macsec_phy_write(phydev, bank, MSCC_MS_SAM_FLOW_CTRL(idx), val); 493 } 494 495 static u32 vsc8584_macsec_flow_context_id(struct macsec_flow *flow) 496 { 497 if (flow->bank == MACSEC_INGR) 498 return flow->index + MSCC_MS_MAX_FLOWS; 499 500 return flow->index; 501 } 502 503 /* Derive the AES key to get a key for the hash autentication */ 504 static int vsc8584_macsec_derive_key(const u8 key[MACSEC_KEYID_LEN], 505 u16 key_len, u8 hkey[16]) 506 { 507 const u8 input[AES_BLOCK_SIZE] = {0}; 508 struct crypto_aes_ctx ctx; 509 int ret; 510 511 ret = aes_expandkey(&ctx, key, key_len); 512 if (ret) 513 return ret; 514 515 aes_encrypt(&ctx, hkey, input); 516 memzero_explicit(&ctx, sizeof(ctx)); 517 return 0; 518 } 519 520 static int vsc8584_macsec_transformation(struct phy_device *phydev, 521 struct macsec_flow *flow) 522 { 523 struct vsc8531_private *priv = phydev->priv; 524 enum macsec_bank bank = flow->bank; 525 int i, ret, index = flow->index; 526 u32 rec = 0, control = 0; 527 u8 hkey[16]; 528 u64 sci; 529 530 ret = vsc8584_macsec_derive_key(flow->key, priv->secy->key_len, hkey); 531 if (ret) 532 return ret; 533 534 switch (priv->secy->key_len) { 535 case 16: 536 control |= CONTROL_CRYPTO_ALG(CTRYPTO_ALG_AES_CTR_128); 537 break; 538 case 32: 539 control |= CONTROL_CRYPTO_ALG(CTRYPTO_ALG_AES_CTR_256); 540 break; 541 default: 542 return -EINVAL; 543 } 544 545 control |= (bank == MACSEC_EGR) ? 546 (CONTROL_TYPE_EGRESS | CONTROL_AN(priv->secy->tx_sc.encoding_sa)) : 547 (CONTROL_TYPE_INGRESS | CONTROL_SEQ_MASK); 548 549 control |= CONTROL_UPDATE_SEQ | CONTROL_ENCRYPT_AUTH | CONTROL_KEY_IN_CTX | 550 CONTROL_IV0 | CONTROL_IV1 | CONTROL_IV_IN_SEQ | 551 CONTROL_DIGEST_TYPE(0x2) | CONTROL_SEQ_TYPE(0x1) | 552 CONTROL_AUTH_ALG(AUTH_ALG_AES_GHAS) | CONTROL_CONTEXT_ID; 553 554 /* Set the control word */ 555 vsc8584_macsec_phy_write(phydev, bank, MSCC_MS_XFORM_REC(index, rec++), 556 control); 557 558 /* Set the context ID. Must be unique. */ 559 vsc8584_macsec_phy_write(phydev, bank, MSCC_MS_XFORM_REC(index, rec++), 560 vsc8584_macsec_flow_context_id(flow)); 561 562 /* Set the encryption/decryption key */ 563 for (i = 0; i < priv->secy->key_len / sizeof(u32); i++) 564 vsc8584_macsec_phy_write(phydev, bank, 565 MSCC_MS_XFORM_REC(index, rec++), 566 ((u32 *)flow->key)[i]); 567 568 /* Set the authentication key */ 569 for (i = 0; i < 4; i++) 570 vsc8584_macsec_phy_write(phydev, bank, 571 MSCC_MS_XFORM_REC(index, rec++), 572 ((u32 *)hkey)[i]); 573 574 /* Initial sequence number */ 575 vsc8584_macsec_phy_write(phydev, bank, MSCC_MS_XFORM_REC(index, rec++), 576 bank == MACSEC_INGR ? 577 flow->rx_sa->next_pn : flow->tx_sa->next_pn); 578 579 if (bank == MACSEC_INGR) 580 /* Set the mask (replay window size) */ 581 vsc8584_macsec_phy_write(phydev, bank, 582 MSCC_MS_XFORM_REC(index, rec++), 583 priv->secy->replay_window); 584 585 /* Set the input vectors */ 586 sci = (__force u64)(bank == MACSEC_INGR ? flow->rx_sa->sc->sci : priv->secy->sci); 587 vsc8584_macsec_phy_write(phydev, bank, MSCC_MS_XFORM_REC(index, rec++), 588 lower_32_bits(sci)); 589 vsc8584_macsec_phy_write(phydev, bank, MSCC_MS_XFORM_REC(index, rec++), 590 upper_32_bits(sci)); 591 592 while (rec < 20) 593 vsc8584_macsec_phy_write(phydev, bank, MSCC_MS_XFORM_REC(index, rec++), 594 0); 595 596 flow->has_transformation = true; 597 return 0; 598 } 599 600 static struct macsec_flow *vsc8584_macsec_alloc_flow(struct vsc8531_private *priv, 601 enum macsec_bank bank) 602 { 603 unsigned long *bitmap = bank == MACSEC_INGR ? 604 &priv->ingr_flows : &priv->egr_flows; 605 struct macsec_flow *flow; 606 int index; 607 608 index = find_first_zero_bit(bitmap, MSCC_MS_MAX_FLOWS); 609 610 if (index == MSCC_MS_MAX_FLOWS) 611 return ERR_PTR(-ENOMEM); 612 613 flow = kzalloc(sizeof(*flow), GFP_KERNEL); 614 if (!flow) 615 return ERR_PTR(-ENOMEM); 616 617 set_bit(index, bitmap); 618 flow->index = index; 619 flow->bank = bank; 620 flow->priority = 8; 621 flow->assoc_num = -1; 622 623 list_add_tail(&flow->list, &priv->macsec_flows); 624 return flow; 625 } 626 627 static void vsc8584_macsec_free_flow(struct vsc8531_private *priv, 628 struct macsec_flow *flow) 629 { 630 unsigned long *bitmap = flow->bank == MACSEC_INGR ? 631 &priv->ingr_flows : &priv->egr_flows; 632 633 list_del(&flow->list); 634 clear_bit(flow->index, bitmap); 635 kfree(flow); 636 } 637 638 static int vsc8584_macsec_add_flow(struct phy_device *phydev, 639 struct macsec_flow *flow, bool update) 640 { 641 int ret; 642 643 flow->port = MSCC_MS_PORT_CONTROLLED; 644 vsc8584_macsec_flow(phydev, flow); 645 646 if (update) 647 return 0; 648 649 ret = vsc8584_macsec_transformation(phydev, flow); 650 if (ret) { 651 vsc8584_macsec_free_flow(phydev->priv, flow); 652 return ret; 653 } 654 655 return 0; 656 } 657 658 static int vsc8584_macsec_default_flows(struct phy_device *phydev) 659 { 660 struct macsec_flow *flow; 661 662 /* Add a rule to let the MKA traffic go through, ingress */ 663 flow = vsc8584_macsec_alloc_flow(phydev->priv, MACSEC_INGR); 664 if (IS_ERR(flow)) 665 return PTR_ERR(flow); 666 667 flow->priority = 15; 668 flow->port = MSCC_MS_PORT_UNCONTROLLED; 669 flow->match.tagged = 1; 670 flow->match.untagged = 1; 671 flow->match.etype = 1; 672 flow->etype = ETH_P_PAE; 673 flow->action.bypass = 1; 674 675 vsc8584_macsec_flow(phydev, flow); 676 vsc8584_macsec_flow_enable(phydev, flow); 677 678 /* Add a rule to let the MKA traffic go through, egress */ 679 flow = vsc8584_macsec_alloc_flow(phydev->priv, MACSEC_EGR); 680 if (IS_ERR(flow)) 681 return PTR_ERR(flow); 682 683 flow->priority = 15; 684 flow->port = MSCC_MS_PORT_COMMON; 685 flow->match.untagged = 1; 686 flow->match.etype = 1; 687 flow->etype = ETH_P_PAE; 688 flow->action.bypass = 1; 689 690 vsc8584_macsec_flow(phydev, flow); 691 vsc8584_macsec_flow_enable(phydev, flow); 692 693 return 0; 694 } 695 696 static void vsc8584_macsec_del_flow(struct phy_device *phydev, 697 struct macsec_flow *flow) 698 { 699 vsc8584_macsec_flow_disable(phydev, flow); 700 vsc8584_macsec_free_flow(phydev->priv, flow); 701 } 702 703 static int __vsc8584_macsec_add_rxsa(struct macsec_context *ctx, 704 struct macsec_flow *flow, bool update) 705 { 706 struct phy_device *phydev = ctx->phydev; 707 struct vsc8531_private *priv = phydev->priv; 708 709 if (!flow) { 710 flow = vsc8584_macsec_alloc_flow(priv, MACSEC_INGR); 711 if (IS_ERR(flow)) 712 return PTR_ERR(flow); 713 714 memcpy(flow->key, ctx->sa.key, priv->secy->key_len); 715 } 716 717 flow->assoc_num = ctx->sa.assoc_num; 718 flow->rx_sa = ctx->sa.rx_sa; 719 720 /* Always match tagged packets on ingress */ 721 flow->match.tagged = 1; 722 flow->match.sci = 1; 723 724 if (priv->secy->validate_frames != MACSEC_VALIDATE_DISABLED) 725 flow->match.untagged = 1; 726 727 return vsc8584_macsec_add_flow(phydev, flow, update); 728 } 729 730 static int __vsc8584_macsec_add_txsa(struct macsec_context *ctx, 731 struct macsec_flow *flow, bool update) 732 { 733 struct phy_device *phydev = ctx->phydev; 734 struct vsc8531_private *priv = phydev->priv; 735 736 if (!flow) { 737 flow = vsc8584_macsec_alloc_flow(priv, MACSEC_EGR); 738 if (IS_ERR(flow)) 739 return PTR_ERR(flow); 740 741 memcpy(flow->key, ctx->sa.key, priv->secy->key_len); 742 } 743 744 flow->assoc_num = ctx->sa.assoc_num; 745 flow->tx_sa = ctx->sa.tx_sa; 746 747 /* Always match untagged packets on egress */ 748 flow->match.untagged = 1; 749 750 return vsc8584_macsec_add_flow(phydev, flow, update); 751 } 752 753 static int vsc8584_macsec_dev_open(struct macsec_context *ctx) 754 { 755 struct vsc8531_private *priv = ctx->phydev->priv; 756 struct macsec_flow *flow, *tmp; 757 758 /* No operation to perform before the commit step */ 759 if (ctx->prepare) 760 return 0; 761 762 list_for_each_entry_safe(flow, tmp, &priv->macsec_flows, list) 763 vsc8584_macsec_flow_enable(ctx->phydev, flow); 764 765 return 0; 766 } 767 768 static int vsc8584_macsec_dev_stop(struct macsec_context *ctx) 769 { 770 struct vsc8531_private *priv = ctx->phydev->priv; 771 struct macsec_flow *flow, *tmp; 772 773 /* No operation to perform before the commit step */ 774 if (ctx->prepare) 775 return 0; 776 777 list_for_each_entry_safe(flow, tmp, &priv->macsec_flows, list) 778 vsc8584_macsec_flow_disable(ctx->phydev, flow); 779 780 return 0; 781 } 782 783 static int vsc8584_macsec_add_secy(struct macsec_context *ctx) 784 { 785 struct vsc8531_private *priv = ctx->phydev->priv; 786 struct macsec_secy *secy = ctx->secy; 787 788 if (ctx->prepare) { 789 if (priv->secy) 790 return -EEXIST; 791 792 return 0; 793 } 794 795 priv->secy = secy; 796 797 vsc8584_macsec_flow_default_action(ctx->phydev, MACSEC_EGR, 798 secy->validate_frames != MACSEC_VALIDATE_DISABLED); 799 vsc8584_macsec_flow_default_action(ctx->phydev, MACSEC_INGR, 800 secy->validate_frames != MACSEC_VALIDATE_DISABLED); 801 802 return vsc8584_macsec_default_flows(ctx->phydev); 803 } 804 805 static int vsc8584_macsec_del_secy(struct macsec_context *ctx) 806 { 807 struct vsc8531_private *priv = ctx->phydev->priv; 808 struct macsec_flow *flow, *tmp; 809 810 /* No operation to perform before the commit step */ 811 if (ctx->prepare) 812 return 0; 813 814 list_for_each_entry_safe(flow, tmp, &priv->macsec_flows, list) 815 vsc8584_macsec_del_flow(ctx->phydev, flow); 816 817 vsc8584_macsec_flow_default_action(ctx->phydev, MACSEC_EGR, false); 818 vsc8584_macsec_flow_default_action(ctx->phydev, MACSEC_INGR, false); 819 820 priv->secy = NULL; 821 return 0; 822 } 823 824 static int vsc8584_macsec_upd_secy(struct macsec_context *ctx) 825 { 826 /* No operation to perform before the commit step */ 827 if (ctx->prepare) 828 return 0; 829 830 vsc8584_macsec_del_secy(ctx); 831 return vsc8584_macsec_add_secy(ctx); 832 } 833 834 static int vsc8584_macsec_add_rxsc(struct macsec_context *ctx) 835 { 836 /* Nothing to do */ 837 return 0; 838 } 839 840 static int vsc8584_macsec_upd_rxsc(struct macsec_context *ctx) 841 { 842 return -EOPNOTSUPP; 843 } 844 845 static int vsc8584_macsec_del_rxsc(struct macsec_context *ctx) 846 { 847 struct vsc8531_private *priv = ctx->phydev->priv; 848 struct macsec_flow *flow, *tmp; 849 850 /* No operation to perform before the commit step */ 851 if (ctx->prepare) 852 return 0; 853 854 list_for_each_entry_safe(flow, tmp, &priv->macsec_flows, list) { 855 if (flow->bank == MACSEC_INGR && flow->rx_sa && 856 flow->rx_sa->sc->sci == ctx->rx_sc->sci) 857 vsc8584_macsec_del_flow(ctx->phydev, flow); 858 } 859 860 return 0; 861 } 862 863 static int vsc8584_macsec_add_rxsa(struct macsec_context *ctx) 864 { 865 struct macsec_flow *flow = NULL; 866 867 if (ctx->prepare) 868 return __vsc8584_macsec_add_rxsa(ctx, flow, false); 869 870 flow = vsc8584_macsec_find_flow(ctx, MACSEC_INGR); 871 if (IS_ERR(flow)) 872 return PTR_ERR(flow); 873 874 vsc8584_macsec_flow_enable(ctx->phydev, flow); 875 return 0; 876 } 877 878 static int vsc8584_macsec_upd_rxsa(struct macsec_context *ctx) 879 { 880 struct macsec_flow *flow; 881 882 flow = vsc8584_macsec_find_flow(ctx, MACSEC_INGR); 883 if (IS_ERR(flow)) 884 return PTR_ERR(flow); 885 886 if (ctx->prepare) { 887 /* Make sure the flow is disabled before updating it */ 888 vsc8584_macsec_flow_disable(ctx->phydev, flow); 889 890 return __vsc8584_macsec_add_rxsa(ctx, flow, true); 891 } 892 893 vsc8584_macsec_flow_enable(ctx->phydev, flow); 894 return 0; 895 } 896 897 static int vsc8584_macsec_del_rxsa(struct macsec_context *ctx) 898 { 899 struct macsec_flow *flow; 900 901 flow = vsc8584_macsec_find_flow(ctx, MACSEC_INGR); 902 903 if (IS_ERR(flow)) 904 return PTR_ERR(flow); 905 if (ctx->prepare) 906 return 0; 907 908 vsc8584_macsec_del_flow(ctx->phydev, flow); 909 return 0; 910 } 911 912 static int vsc8584_macsec_add_txsa(struct macsec_context *ctx) 913 { 914 struct macsec_flow *flow = NULL; 915 916 if (ctx->prepare) 917 return __vsc8584_macsec_add_txsa(ctx, flow, false); 918 919 flow = vsc8584_macsec_find_flow(ctx, MACSEC_EGR); 920 if (IS_ERR(flow)) 921 return PTR_ERR(flow); 922 923 vsc8584_macsec_flow_enable(ctx->phydev, flow); 924 return 0; 925 } 926 927 static int vsc8584_macsec_upd_txsa(struct macsec_context *ctx) 928 { 929 struct macsec_flow *flow; 930 931 flow = vsc8584_macsec_find_flow(ctx, MACSEC_EGR); 932 if (IS_ERR(flow)) 933 return PTR_ERR(flow); 934 935 if (ctx->prepare) { 936 /* Make sure the flow is disabled before updating it */ 937 vsc8584_macsec_flow_disable(ctx->phydev, flow); 938 939 return __vsc8584_macsec_add_txsa(ctx, flow, true); 940 } 941 942 vsc8584_macsec_flow_enable(ctx->phydev, flow); 943 return 0; 944 } 945 946 static int vsc8584_macsec_del_txsa(struct macsec_context *ctx) 947 { 948 struct macsec_flow *flow; 949 950 flow = vsc8584_macsec_find_flow(ctx, MACSEC_EGR); 951 952 if (IS_ERR(flow)) 953 return PTR_ERR(flow); 954 if (ctx->prepare) 955 return 0; 956 957 vsc8584_macsec_del_flow(ctx->phydev, flow); 958 return 0; 959 } 960 961 static struct macsec_ops vsc8584_macsec_ops = { 962 .mdo_dev_open = vsc8584_macsec_dev_open, 963 .mdo_dev_stop = vsc8584_macsec_dev_stop, 964 .mdo_add_secy = vsc8584_macsec_add_secy, 965 .mdo_upd_secy = vsc8584_macsec_upd_secy, 966 .mdo_del_secy = vsc8584_macsec_del_secy, 967 .mdo_add_rxsc = vsc8584_macsec_add_rxsc, 968 .mdo_upd_rxsc = vsc8584_macsec_upd_rxsc, 969 .mdo_del_rxsc = vsc8584_macsec_del_rxsc, 970 .mdo_add_rxsa = vsc8584_macsec_add_rxsa, 971 .mdo_upd_rxsa = vsc8584_macsec_upd_rxsa, 972 .mdo_del_rxsa = vsc8584_macsec_del_rxsa, 973 .mdo_add_txsa = vsc8584_macsec_add_txsa, 974 .mdo_upd_txsa = vsc8584_macsec_upd_txsa, 975 .mdo_del_txsa = vsc8584_macsec_del_txsa, 976 }; 977 978 int vsc8584_macsec_init(struct phy_device *phydev) 979 { 980 struct vsc8531_private *vsc8531 = phydev->priv; 981 982 switch (phydev->phy_id & phydev->drv->phy_id_mask) { 983 case PHY_ID_VSC856X: 984 case PHY_ID_VSC8575: 985 case PHY_ID_VSC8582: 986 case PHY_ID_VSC8584: 987 INIT_LIST_HEAD(&vsc8531->macsec_flows); 988 vsc8531->secy = NULL; 989 990 phydev->macsec_ops = &vsc8584_macsec_ops; 991 992 return __vsc8584_macsec_init(phydev); 993 } 994 995 return 0; 996 } 997 998 void vsc8584_handle_macsec_interrupt(struct phy_device *phydev) 999 { 1000 struct vsc8531_private *priv = phydev->priv; 1001 struct macsec_flow *flow, *tmp; 1002 u32 cause, rec; 1003 1004 /* Check MACsec PN rollover */ 1005 cause = vsc8584_macsec_phy_read(phydev, MACSEC_EGR, 1006 MSCC_MS_INTR_CTRL_STATUS); 1007 cause &= MSCC_MS_INTR_CTRL_STATUS_INTR_CLR_STATUS_M; 1008 if (!(cause & MACSEC_INTR_CTRL_STATUS_ROLLOVER)) 1009 return; 1010 1011 rec = 6 + priv->secy->key_len / sizeof(u32); 1012 list_for_each_entry_safe(flow, tmp, &priv->macsec_flows, list) { 1013 u32 val; 1014 1015 if (flow->bank != MACSEC_EGR || !flow->has_transformation) 1016 continue; 1017 1018 val = vsc8584_macsec_phy_read(phydev, MACSEC_EGR, 1019 MSCC_MS_XFORM_REC(flow->index, rec)); 1020 if (val == 0xffffffff) { 1021 vsc8584_macsec_flow_disable(phydev, flow); 1022 macsec_pn_wrapped(priv->secy, flow->tx_sa); 1023 return; 1024 } 1025 } 1026 } 1027 1028 void vsc8584_config_macsec_intr(struct phy_device *phydev) 1029 { 1030 phy_write(phydev, MSCC_EXT_PAGE_ACCESS, MSCC_PHY_PAGE_EXTENDED_2); 1031 phy_write(phydev, MSCC_PHY_EXTENDED_INT, MSCC_PHY_EXTENDED_INT_MS_EGR); 1032 phy_write(phydev, MSCC_EXT_PAGE_ACCESS, MSCC_PHY_PAGE_STANDARD); 1033 1034 vsc8584_macsec_phy_write(phydev, MACSEC_EGR, MSCC_MS_AIC_CTRL, 0xf); 1035 vsc8584_macsec_phy_write(phydev, MACSEC_EGR, MSCC_MS_INTR_CTRL_STATUS, 1036 MSCC_MS_INTR_CTRL_STATUS_INTR_ENABLE(MACSEC_INTR_CTRL_STATUS_ROLLOVER)); 1037 } 1038