1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (c) 2014-2017 Broadcom 4 */ 5 6 #ifndef __BCMGENET_H__ 7 #define __BCMGENET_H__ 8 9 #include <linux/skbuff.h> 10 #include <linux/netdevice.h> 11 #include <linux/spinlock.h> 12 #include <linux/clk.h> 13 #include <linux/mii.h> 14 #include <linux/if_vlan.h> 15 #include <linux/phy.h> 16 #include <linux/dim.h> 17 18 /* total number of Buffer Descriptors, same for Rx/Tx */ 19 #define TOTAL_DESC 256 20 21 /* which ring is descriptor based */ 22 #define DESC_INDEX 16 23 24 /* Body(1500) + EH_SIZE(14) + VLANTAG(4) + BRCMTAG(6) + FCS(4) = 1528. 25 * 1536 is multiple of 256 bytes 26 */ 27 #define ENET_BRCM_TAG_LEN 6 28 #define ENET_PAD 8 29 #define ENET_MAX_MTU_SIZE (ETH_DATA_LEN + ETH_HLEN + VLAN_HLEN + \ 30 ENET_BRCM_TAG_LEN + ETH_FCS_LEN + ENET_PAD) 31 #define DMA_MAX_BURST_LENGTH 0x10 32 33 /* misc. configuration */ 34 #define CLEAR_ALL_HFB 0xFF 35 #define DMA_FC_THRESH_HI (TOTAL_DESC >> 4) 36 #define DMA_FC_THRESH_LO 5 37 38 /* 64B receive/transmit status block */ 39 struct status_64 { 40 u32 length_status; /* length and peripheral status */ 41 u32 ext_status; /* Extended status*/ 42 u32 rx_csum; /* partial rx checksum */ 43 u32 unused1[9]; /* unused */ 44 u32 tx_csum_info; /* Tx checksum info. */ 45 u32 unused2[3]; /* unused */ 46 }; 47 48 /* Rx status bits */ 49 #define STATUS_RX_EXT_MASK 0x1FFFFF 50 #define STATUS_RX_CSUM_MASK 0xFFFF 51 #define STATUS_RX_CSUM_OK 0x10000 52 #define STATUS_RX_CSUM_FR 0x20000 53 #define STATUS_RX_PROTO_TCP 0 54 #define STATUS_RX_PROTO_UDP 1 55 #define STATUS_RX_PROTO_ICMP 2 56 #define STATUS_RX_PROTO_OTHER 3 57 #define STATUS_RX_PROTO_MASK 3 58 #define STATUS_RX_PROTO_SHIFT 18 59 #define STATUS_FILTER_INDEX_MASK 0xFFFF 60 /* Tx status bits */ 61 #define STATUS_TX_CSUM_START_MASK 0X7FFF 62 #define STATUS_TX_CSUM_START_SHIFT 16 63 #define STATUS_TX_CSUM_PROTO_UDP 0x8000 64 #define STATUS_TX_CSUM_OFFSET_MASK 0x7FFF 65 #define STATUS_TX_CSUM_LV 0x80000000 66 67 /* DMA Descriptor */ 68 #define DMA_DESC_LENGTH_STATUS 0x00 /* in bytes of data in buffer */ 69 #define DMA_DESC_ADDRESS_LO 0x04 /* lower bits of PA */ 70 #define DMA_DESC_ADDRESS_HI 0x08 /* upper 32 bits of PA, GENETv4+ */ 71 72 /* Rx/Tx common counter group */ 73 struct bcmgenet_pkt_counters { 74 u32 cnt_64; /* RO Received/Transmited 64 bytes packet */ 75 u32 cnt_127; /* RO Rx/Tx 127 bytes packet */ 76 u32 cnt_255; /* RO Rx/Tx 65-255 bytes packet */ 77 u32 cnt_511; /* RO Rx/Tx 256-511 bytes packet */ 78 u32 cnt_1023; /* RO Rx/Tx 512-1023 bytes packet */ 79 u32 cnt_1518; /* RO Rx/Tx 1024-1518 bytes packet */ 80 u32 cnt_mgv; /* RO Rx/Tx 1519-1522 good VLAN packet */ 81 u32 cnt_2047; /* RO Rx/Tx 1522-2047 bytes packet*/ 82 u32 cnt_4095; /* RO Rx/Tx 2048-4095 bytes packet*/ 83 u32 cnt_9216; /* RO Rx/Tx 4096-9216 bytes packet*/ 84 }; 85 86 /* RSV, Receive Status Vector */ 87 struct bcmgenet_rx_counters { 88 struct bcmgenet_pkt_counters pkt_cnt; 89 u32 pkt; /* RO (0x428) Received pkt count*/ 90 u32 bytes; /* RO Received byte count */ 91 u32 mca; /* RO # of Received multicast pkt */ 92 u32 bca; /* RO # of Receive broadcast pkt */ 93 u32 fcs; /* RO # of Received FCS error */ 94 u32 cf; /* RO # of Received control frame pkt*/ 95 u32 pf; /* RO # of Received pause frame pkt */ 96 u32 uo; /* RO # of unknown op code pkt */ 97 u32 aln; /* RO # of alignment error count */ 98 u32 flr; /* RO # of frame length out of range count */ 99 u32 cde; /* RO # of code error pkt */ 100 u32 fcr; /* RO # of carrier sense error pkt */ 101 u32 ovr; /* RO # of oversize pkt*/ 102 u32 jbr; /* RO # of jabber count */ 103 u32 mtue; /* RO # of MTU error pkt*/ 104 u32 pok; /* RO # of Received good pkt */ 105 u32 uc; /* RO # of unicast pkt */ 106 u32 ppp; /* RO # of PPP pkt */ 107 u32 rcrc; /* RO (0x470),# of CRC match pkt */ 108 }; 109 110 /* TSV, Transmit Status Vector */ 111 struct bcmgenet_tx_counters { 112 struct bcmgenet_pkt_counters pkt_cnt; 113 u32 pkts; /* RO (0x4a8) Transmited pkt */ 114 u32 mca; /* RO # of xmited multicast pkt */ 115 u32 bca; /* RO # of xmited broadcast pkt */ 116 u32 pf; /* RO # of xmited pause frame count */ 117 u32 cf; /* RO # of xmited control frame count */ 118 u32 fcs; /* RO # of xmited FCS error count */ 119 u32 ovr; /* RO # of xmited oversize pkt */ 120 u32 drf; /* RO # of xmited deferral pkt */ 121 u32 edf; /* RO # of xmited Excessive deferral pkt*/ 122 u32 scl; /* RO # of xmited single collision pkt */ 123 u32 mcl; /* RO # of xmited multiple collision pkt*/ 124 u32 lcl; /* RO # of xmited late collision pkt */ 125 u32 ecl; /* RO # of xmited excessive collision pkt*/ 126 u32 frg; /* RO # of xmited fragments pkt*/ 127 u32 ncl; /* RO # of xmited total collision count */ 128 u32 jbr; /* RO # of xmited jabber count*/ 129 u32 bytes; /* RO # of xmited byte count */ 130 u32 pok; /* RO # of xmited good pkt */ 131 u32 uc; /* RO (0x0x4f0)# of xmited unitcast pkt */ 132 }; 133 134 struct bcmgenet_mib_counters { 135 struct bcmgenet_rx_counters rx; 136 struct bcmgenet_tx_counters tx; 137 u32 rx_runt_cnt; 138 u32 rx_runt_fcs; 139 u32 rx_runt_fcs_align; 140 u32 rx_runt_bytes; 141 u32 rbuf_ovflow_cnt; 142 u32 rbuf_err_cnt; 143 u32 mdf_err_cnt; 144 u32 alloc_rx_buff_failed; 145 u32 rx_dma_failed; 146 u32 tx_dma_failed; 147 u32 tx_realloc_tsb; 148 u32 tx_realloc_tsb_failed; 149 }; 150 151 #define UMAC_HD_BKP_CTRL 0x004 152 #define HD_FC_EN (1 << 0) 153 #define HD_FC_BKOFF_OK (1 << 1) 154 #define IPG_CONFIG_RX_SHIFT 2 155 #define IPG_CONFIG_RX_MASK 0x1F 156 157 #define UMAC_CMD 0x008 158 #define CMD_TX_EN (1 << 0) 159 #define CMD_RX_EN (1 << 1) 160 #define UMAC_SPEED_10 0 161 #define UMAC_SPEED_100 1 162 #define UMAC_SPEED_1000 2 163 #define UMAC_SPEED_2500 3 164 #define CMD_SPEED_SHIFT 2 165 #define CMD_SPEED_MASK 3 166 #define CMD_PROMISC (1 << 4) 167 #define CMD_PAD_EN (1 << 5) 168 #define CMD_CRC_FWD (1 << 6) 169 #define CMD_PAUSE_FWD (1 << 7) 170 #define CMD_RX_PAUSE_IGNORE (1 << 8) 171 #define CMD_TX_ADDR_INS (1 << 9) 172 #define CMD_HD_EN (1 << 10) 173 #define CMD_SW_RESET (1 << 13) 174 #define CMD_LCL_LOOP_EN (1 << 15) 175 #define CMD_AUTO_CONFIG (1 << 22) 176 #define CMD_CNTL_FRM_EN (1 << 23) 177 #define CMD_NO_LEN_CHK (1 << 24) 178 #define CMD_RMT_LOOP_EN (1 << 25) 179 #define CMD_PRBL_EN (1 << 27) 180 #define CMD_TX_PAUSE_IGNORE (1 << 28) 181 #define CMD_TX_RX_EN (1 << 29) 182 #define CMD_RUNT_FILTER_DIS (1 << 30) 183 184 #define UMAC_MAC0 0x00C 185 #define UMAC_MAC1 0x010 186 #define UMAC_MAX_FRAME_LEN 0x014 187 188 #define UMAC_MODE 0x44 189 #define MODE_LINK_STATUS (1 << 5) 190 191 #define UMAC_EEE_CTRL 0x064 192 #define EN_LPI_RX_PAUSE (1 << 0) 193 #define EN_LPI_TX_PFC (1 << 1) 194 #define EN_LPI_TX_PAUSE (1 << 2) 195 #define EEE_EN (1 << 3) 196 #define RX_FIFO_CHECK (1 << 4) 197 #define EEE_TX_CLK_DIS (1 << 5) 198 #define DIS_EEE_10M (1 << 6) 199 #define LP_IDLE_PREDICTION_MODE (1 << 7) 200 201 #define UMAC_EEE_LPI_TIMER 0x068 202 #define UMAC_EEE_WAKE_TIMER 0x06C 203 #define UMAC_EEE_REF_COUNT 0x070 204 #define EEE_REFERENCE_COUNT_MASK 0xffff 205 206 #define UMAC_TX_FLUSH 0x334 207 208 #define UMAC_MIB_START 0x400 209 210 #define UMAC_MDIO_CMD 0x614 211 #define MDIO_START_BUSY (1 << 29) 212 #define MDIO_READ_FAIL (1 << 28) 213 #define MDIO_RD (2 << 26) 214 #define MDIO_WR (1 << 26) 215 #define MDIO_PMD_SHIFT 21 216 #define MDIO_PMD_MASK 0x1F 217 #define MDIO_REG_SHIFT 16 218 #define MDIO_REG_MASK 0x1F 219 220 #define UMAC_RBUF_OVFL_CNT_V1 0x61C 221 #define RBUF_OVFL_CNT_V2 0x80 222 #define RBUF_OVFL_CNT_V3PLUS 0x94 223 224 #define UMAC_MPD_CTRL 0x620 225 #define MPD_EN (1 << 0) 226 #define MPD_PW_EN (1 << 27) 227 #define MPD_MSEQ_LEN_SHIFT 16 228 #define MPD_MSEQ_LEN_MASK 0xFF 229 230 #define UMAC_MPD_PW_MS 0x624 231 #define UMAC_MPD_PW_LS 0x628 232 #define UMAC_RBUF_ERR_CNT_V1 0x634 233 #define RBUF_ERR_CNT_V2 0x84 234 #define RBUF_ERR_CNT_V3PLUS 0x98 235 #define UMAC_MDF_ERR_CNT 0x638 236 #define UMAC_MDF_CTRL 0x650 237 #define UMAC_MDF_ADDR 0x654 238 #define UMAC_MIB_CTRL 0x580 239 #define MIB_RESET_RX (1 << 0) 240 #define MIB_RESET_RUNT (1 << 1) 241 #define MIB_RESET_TX (1 << 2) 242 243 #define RBUF_CTRL 0x00 244 #define RBUF_64B_EN (1 << 0) 245 #define RBUF_ALIGN_2B (1 << 1) 246 #define RBUF_BAD_DIS (1 << 2) 247 248 #define RBUF_STATUS 0x0C 249 #define RBUF_STATUS_WOL (1 << 0) 250 #define RBUF_STATUS_MPD_INTR_ACTIVE (1 << 1) 251 #define RBUF_STATUS_ACPI_INTR_ACTIVE (1 << 2) 252 253 #define RBUF_CHK_CTRL 0x14 254 #define RBUF_RXCHK_EN (1 << 0) 255 #define RBUF_SKIP_FCS (1 << 4) 256 #define RBUF_L3_PARSE_DIS (1 << 5) 257 258 #define RBUF_ENERGY_CTRL 0x9c 259 #define RBUF_EEE_EN (1 << 0) 260 #define RBUF_PM_EN (1 << 1) 261 262 #define RBUF_TBUF_SIZE_CTRL 0xb4 263 264 #define RBUF_HFB_CTRL_V1 0x38 265 #define RBUF_HFB_FILTER_EN_SHIFT 16 266 #define RBUF_HFB_FILTER_EN_MASK 0xffff0000 267 #define RBUF_HFB_EN (1 << 0) 268 #define RBUF_HFB_256B (1 << 1) 269 #define RBUF_ACPI_EN (1 << 2) 270 271 #define RBUF_HFB_LEN_V1 0x3C 272 #define RBUF_FLTR_LEN_MASK 0xFF 273 #define RBUF_FLTR_LEN_SHIFT 8 274 275 #define TBUF_CTRL 0x00 276 #define TBUF_BP_MC 0x0C 277 #define TBUF_ENERGY_CTRL 0x14 278 #define TBUF_EEE_EN (1 << 0) 279 #define TBUF_PM_EN (1 << 1) 280 281 #define TBUF_CTRL_V1 0x80 282 #define TBUF_BP_MC_V1 0xA0 283 284 #define HFB_CTRL 0x00 285 #define HFB_FLT_ENABLE_V3PLUS 0x04 286 #define HFB_FLT_LEN_V2 0x04 287 #define HFB_FLT_LEN_V3PLUS 0x1C 288 289 /* uniMac intrl2 registers */ 290 #define INTRL2_CPU_STAT 0x00 291 #define INTRL2_CPU_SET 0x04 292 #define INTRL2_CPU_CLEAR 0x08 293 #define INTRL2_CPU_MASK_STATUS 0x0C 294 #define INTRL2_CPU_MASK_SET 0x10 295 #define INTRL2_CPU_MASK_CLEAR 0x14 296 297 /* INTRL2 instance 0 definitions */ 298 #define UMAC_IRQ_SCB (1 << 0) 299 #define UMAC_IRQ_EPHY (1 << 1) 300 #define UMAC_IRQ_PHY_DET_R (1 << 2) 301 #define UMAC_IRQ_PHY_DET_F (1 << 3) 302 #define UMAC_IRQ_LINK_UP (1 << 4) 303 #define UMAC_IRQ_LINK_DOWN (1 << 5) 304 #define UMAC_IRQ_LINK_EVENT (UMAC_IRQ_LINK_UP | UMAC_IRQ_LINK_DOWN) 305 #define UMAC_IRQ_UMAC (1 << 6) 306 #define UMAC_IRQ_UMAC_TSV (1 << 7) 307 #define UMAC_IRQ_TBUF_UNDERRUN (1 << 8) 308 #define UMAC_IRQ_RBUF_OVERFLOW (1 << 9) 309 #define UMAC_IRQ_HFB_SM (1 << 10) 310 #define UMAC_IRQ_HFB_MM (1 << 11) 311 #define UMAC_IRQ_MPD_R (1 << 12) 312 #define UMAC_IRQ_RXDMA_MBDONE (1 << 13) 313 #define UMAC_IRQ_RXDMA_PDONE (1 << 14) 314 #define UMAC_IRQ_RXDMA_BDONE (1 << 15) 315 #define UMAC_IRQ_RXDMA_DONE UMAC_IRQ_RXDMA_MBDONE 316 #define UMAC_IRQ_TXDMA_MBDONE (1 << 16) 317 #define UMAC_IRQ_TXDMA_PDONE (1 << 17) 318 #define UMAC_IRQ_TXDMA_BDONE (1 << 18) 319 #define UMAC_IRQ_TXDMA_DONE UMAC_IRQ_TXDMA_MBDONE 320 321 /* Only valid for GENETv3+ */ 322 #define UMAC_IRQ_MDIO_DONE (1 << 23) 323 #define UMAC_IRQ_MDIO_ERROR (1 << 24) 324 325 /* INTRL2 instance 1 definitions */ 326 #define UMAC_IRQ1_TX_INTR_MASK 0xFFFF 327 #define UMAC_IRQ1_RX_INTR_MASK 0xFFFF 328 #define UMAC_IRQ1_RX_INTR_SHIFT 16 329 330 /* Register block offsets */ 331 #define GENET_SYS_OFF 0x0000 332 #define GENET_GR_BRIDGE_OFF 0x0040 333 #define GENET_EXT_OFF 0x0080 334 #define GENET_INTRL2_0_OFF 0x0200 335 #define GENET_INTRL2_1_OFF 0x0240 336 #define GENET_RBUF_OFF 0x0300 337 #define GENET_UMAC_OFF 0x0800 338 339 /* SYS block offsets and register definitions */ 340 #define SYS_REV_CTRL 0x00 341 #define SYS_PORT_CTRL 0x04 342 #define PORT_MODE_INT_EPHY 0 343 #define PORT_MODE_INT_GPHY 1 344 #define PORT_MODE_EXT_EPHY 2 345 #define PORT_MODE_EXT_GPHY 3 346 #define PORT_MODE_EXT_RVMII_25 (4 | BIT(4)) 347 #define PORT_MODE_EXT_RVMII_50 4 348 #define LED_ACT_SOURCE_MAC (1 << 9) 349 350 #define SYS_RBUF_FLUSH_CTRL 0x08 351 #define SYS_TBUF_FLUSH_CTRL 0x0C 352 #define RBUF_FLUSH_CTRL_V1 0x04 353 354 /* Ext block register offsets and definitions */ 355 #define EXT_EXT_PWR_MGMT 0x00 356 #define EXT_PWR_DOWN_BIAS (1 << 0) 357 #define EXT_PWR_DOWN_DLL (1 << 1) 358 #define EXT_PWR_DOWN_PHY (1 << 2) 359 #define EXT_PWR_DN_EN_LD (1 << 3) 360 #define EXT_ENERGY_DET (1 << 4) 361 #define EXT_IDDQ_FROM_PHY (1 << 5) 362 #define EXT_IDDQ_GLBL_PWR (1 << 7) 363 #define EXT_PHY_RESET (1 << 8) 364 #define EXT_ENERGY_DET_MASK (1 << 12) 365 #define EXT_PWR_DOWN_PHY_TX (1 << 16) 366 #define EXT_PWR_DOWN_PHY_RX (1 << 17) 367 #define EXT_PWR_DOWN_PHY_SD (1 << 18) 368 #define EXT_PWR_DOWN_PHY_RD (1 << 19) 369 #define EXT_PWR_DOWN_PHY_EN (1 << 20) 370 371 #define EXT_RGMII_OOB_CTRL 0x0C 372 #define RGMII_MODE_EN_V123 (1 << 0) 373 #define RGMII_LINK (1 << 4) 374 #define OOB_DISABLE (1 << 5) 375 #define RGMII_MODE_EN (1 << 6) 376 #define ID_MODE_DIS (1 << 16) 377 378 #define EXT_GPHY_CTRL 0x1C 379 #define EXT_CFG_IDDQ_BIAS (1 << 0) 380 #define EXT_CFG_PWR_DOWN (1 << 1) 381 #define EXT_CK25_DIS (1 << 4) 382 #define EXT_GPHY_RESET (1 << 5) 383 384 /* DMA rings size */ 385 #define DMA_RING_SIZE (0x40) 386 #define DMA_RINGS_SIZE (DMA_RING_SIZE * (DESC_INDEX + 1)) 387 388 /* DMA registers common definitions */ 389 #define DMA_RW_POINTER_MASK 0x1FF 390 #define DMA_P_INDEX_DISCARD_CNT_MASK 0xFFFF 391 #define DMA_P_INDEX_DISCARD_CNT_SHIFT 16 392 #define DMA_BUFFER_DONE_CNT_MASK 0xFFFF 393 #define DMA_BUFFER_DONE_CNT_SHIFT 16 394 #define DMA_P_INDEX_MASK 0xFFFF 395 #define DMA_C_INDEX_MASK 0xFFFF 396 397 /* DMA ring size register */ 398 #define DMA_RING_SIZE_MASK 0xFFFF 399 #define DMA_RING_SIZE_SHIFT 16 400 #define DMA_RING_BUFFER_SIZE_MASK 0xFFFF 401 402 /* DMA interrupt threshold register */ 403 #define DMA_INTR_THRESHOLD_MASK 0x01FF 404 405 /* DMA XON/XOFF register */ 406 #define DMA_XON_THREHOLD_MASK 0xFFFF 407 #define DMA_XOFF_THRESHOLD_MASK 0xFFFF 408 #define DMA_XOFF_THRESHOLD_SHIFT 16 409 410 /* DMA flow period register */ 411 #define DMA_FLOW_PERIOD_MASK 0xFFFF 412 #define DMA_MAX_PKT_SIZE_MASK 0xFFFF 413 #define DMA_MAX_PKT_SIZE_SHIFT 16 414 415 416 /* DMA control register */ 417 #define DMA_EN (1 << 0) 418 #define DMA_RING_BUF_EN_SHIFT 0x01 419 #define DMA_RING_BUF_EN_MASK 0xFFFF 420 #define DMA_TSB_SWAP_EN (1 << 20) 421 422 /* DMA status register */ 423 #define DMA_DISABLED (1 << 0) 424 #define DMA_DESC_RAM_INIT_BUSY (1 << 1) 425 426 /* DMA SCB burst size register */ 427 #define DMA_SCB_BURST_SIZE_MASK 0x1F 428 429 /* DMA activity vector register */ 430 #define DMA_ACTIVITY_VECTOR_MASK 0x1FFFF 431 432 /* DMA backpressure mask register */ 433 #define DMA_BACKPRESSURE_MASK 0x1FFFF 434 #define DMA_PFC_ENABLE (1 << 31) 435 436 /* DMA backpressure status register */ 437 #define DMA_BACKPRESSURE_STATUS_MASK 0x1FFFF 438 439 /* DMA override register */ 440 #define DMA_LITTLE_ENDIAN_MODE (1 << 0) 441 #define DMA_REGISTER_MODE (1 << 1) 442 443 /* DMA timeout register */ 444 #define DMA_TIMEOUT_MASK 0xFFFF 445 #define DMA_TIMEOUT_VAL 5000 /* micro seconds */ 446 447 /* TDMA rate limiting control register */ 448 #define DMA_RATE_LIMIT_EN_MASK 0xFFFF 449 450 /* TDMA arbitration control register */ 451 #define DMA_ARBITER_MODE_MASK 0x03 452 #define DMA_RING_BUF_PRIORITY_MASK 0x1F 453 #define DMA_RING_BUF_PRIORITY_SHIFT 5 454 #define DMA_PRIO_REG_INDEX(q) ((q) / 6) 455 #define DMA_PRIO_REG_SHIFT(q) (((q) % 6) * DMA_RING_BUF_PRIORITY_SHIFT) 456 #define DMA_RATE_ADJ_MASK 0xFF 457 458 /* Tx/Rx Dma Descriptor common bits*/ 459 #define DMA_BUFLENGTH_MASK 0x0fff 460 #define DMA_BUFLENGTH_SHIFT 16 461 #define DMA_OWN 0x8000 462 #define DMA_EOP 0x4000 463 #define DMA_SOP 0x2000 464 #define DMA_WRAP 0x1000 465 /* Tx specific Dma descriptor bits */ 466 #define DMA_TX_UNDERRUN 0x0200 467 #define DMA_TX_APPEND_CRC 0x0040 468 #define DMA_TX_OW_CRC 0x0020 469 #define DMA_TX_DO_CSUM 0x0010 470 #define DMA_TX_QTAG_SHIFT 7 471 472 /* Rx Specific Dma descriptor bits */ 473 #define DMA_RX_CHK_V3PLUS 0x8000 474 #define DMA_RX_CHK_V12 0x1000 475 #define DMA_RX_BRDCAST 0x0040 476 #define DMA_RX_MULT 0x0020 477 #define DMA_RX_LG 0x0010 478 #define DMA_RX_NO 0x0008 479 #define DMA_RX_RXER 0x0004 480 #define DMA_RX_CRC_ERROR 0x0002 481 #define DMA_RX_OV 0x0001 482 #define DMA_RX_FI_MASK 0x001F 483 #define DMA_RX_FI_SHIFT 0x0007 484 #define DMA_DESC_ALLOC_MASK 0x00FF 485 486 #define DMA_ARBITER_RR 0x00 487 #define DMA_ARBITER_WRR 0x01 488 #define DMA_ARBITER_SP 0x02 489 490 struct enet_cb { 491 struct sk_buff *skb; 492 void __iomem *bd_addr; 493 DEFINE_DMA_UNMAP_ADDR(dma_addr); 494 DEFINE_DMA_UNMAP_LEN(dma_len); 495 }; 496 497 /* power management mode */ 498 enum bcmgenet_power_mode { 499 GENET_POWER_CABLE_SENSE = 0, 500 GENET_POWER_PASSIVE, 501 GENET_POWER_WOL_MAGIC, 502 }; 503 504 struct bcmgenet_priv; 505 506 /* We support both runtime GENET detection and compile-time 507 * to optimize code-paths for a given hardware 508 */ 509 enum bcmgenet_version { 510 GENET_V1 = 1, 511 GENET_V2, 512 GENET_V3, 513 GENET_V4, 514 GENET_V5 515 }; 516 517 #define GENET_IS_V1(p) ((p)->version == GENET_V1) 518 #define GENET_IS_V2(p) ((p)->version == GENET_V2) 519 #define GENET_IS_V3(p) ((p)->version == GENET_V3) 520 #define GENET_IS_V4(p) ((p)->version == GENET_V4) 521 #define GENET_IS_V5(p) ((p)->version == GENET_V5) 522 523 /* Hardware flags */ 524 #define GENET_HAS_40BITS (1 << 0) 525 #define GENET_HAS_EXT (1 << 1) 526 #define GENET_HAS_MDIO_INTR (1 << 2) 527 #define GENET_HAS_MOCA_LINK_DET (1 << 3) 528 529 /* BCMGENET hardware parameters, keep this structure nicely aligned 530 * since it is going to be used in hot paths 531 */ 532 struct bcmgenet_hw_params { 533 u8 tx_queues; 534 u8 tx_bds_per_q; 535 u8 rx_queues; 536 u8 rx_bds_per_q; 537 u8 bp_in_en_shift; 538 u32 bp_in_mask; 539 u8 hfb_filter_cnt; 540 u8 hfb_filter_size; 541 u8 qtag_mask; 542 u16 tbuf_offset; 543 u32 hfb_offset; 544 u32 hfb_reg_offset; 545 u32 rdma_offset; 546 u32 tdma_offset; 547 u32 words_per_bd; 548 u32 flags; 549 }; 550 551 struct bcmgenet_skb_cb { 552 struct enet_cb *first_cb; /* First control block of SKB */ 553 struct enet_cb *last_cb; /* Last control block of SKB */ 554 unsigned int bytes_sent; /* bytes on the wire (no TSB) */ 555 }; 556 557 #define GENET_CB(skb) ((struct bcmgenet_skb_cb *)((skb)->cb)) 558 559 struct bcmgenet_tx_ring { 560 spinlock_t lock; /* ring lock */ 561 struct napi_struct napi; /* NAPI per tx queue */ 562 unsigned long packets; 563 unsigned long bytes; 564 unsigned int index; /* ring index */ 565 unsigned int queue; /* queue index */ 566 struct enet_cb *cbs; /* tx ring buffer control block*/ 567 unsigned int size; /* size of each tx ring */ 568 unsigned int clean_ptr; /* Tx ring clean pointer */ 569 unsigned int c_index; /* last consumer index of each ring*/ 570 unsigned int free_bds; /* # of free bds for each ring */ 571 unsigned int write_ptr; /* Tx ring write pointer SW copy */ 572 unsigned int prod_index; /* Tx ring producer index SW copy */ 573 unsigned int cb_ptr; /* Tx ring initial CB ptr */ 574 unsigned int end_ptr; /* Tx ring end CB ptr */ 575 void (*int_enable)(struct bcmgenet_tx_ring *); 576 void (*int_disable)(struct bcmgenet_tx_ring *); 577 struct bcmgenet_priv *priv; 578 }; 579 580 struct bcmgenet_net_dim { 581 u16 use_dim; 582 u16 event_ctr; 583 unsigned long packets; 584 unsigned long bytes; 585 struct dim dim; 586 }; 587 588 struct bcmgenet_rx_ring { 589 struct napi_struct napi; /* Rx NAPI struct */ 590 unsigned long bytes; 591 unsigned long packets; 592 unsigned long errors; 593 unsigned long dropped; 594 unsigned int index; /* Rx ring index */ 595 struct enet_cb *cbs; /* Rx ring buffer control block */ 596 unsigned int size; /* Rx ring size */ 597 unsigned int c_index; /* Rx last consumer index */ 598 unsigned int read_ptr; /* Rx ring read pointer */ 599 unsigned int cb_ptr; /* Rx ring initial CB ptr */ 600 unsigned int end_ptr; /* Rx ring end CB ptr */ 601 unsigned int old_discards; 602 struct bcmgenet_net_dim dim; 603 u32 rx_max_coalesced_frames; 604 u32 rx_coalesce_usecs; 605 void (*int_enable)(struct bcmgenet_rx_ring *); 606 void (*int_disable)(struct bcmgenet_rx_ring *); 607 struct bcmgenet_priv *priv; 608 }; 609 610 /* device context */ 611 struct bcmgenet_priv { 612 void __iomem *base; 613 enum bcmgenet_version version; 614 struct net_device *dev; 615 616 /* transmit variables */ 617 void __iomem *tx_bds; 618 struct enet_cb *tx_cbs; 619 unsigned int num_tx_bds; 620 621 struct bcmgenet_tx_ring tx_rings[DESC_INDEX + 1]; 622 623 /* receive variables */ 624 void __iomem *rx_bds; 625 struct enet_cb *rx_cbs; 626 unsigned int num_rx_bds; 627 unsigned int rx_buf_len; 628 629 struct bcmgenet_rx_ring rx_rings[DESC_INDEX + 1]; 630 631 /* other misc variables */ 632 struct bcmgenet_hw_params *hw_params; 633 634 /* MDIO bus variables */ 635 wait_queue_head_t wq; 636 bool internal_phy; 637 struct device_node *phy_dn; 638 struct device_node *mdio_dn; 639 struct mii_bus *mii_bus; 640 u16 gphy_rev; 641 struct clk *clk_eee; 642 bool clk_eee_enabled; 643 644 /* PHY device variables */ 645 int old_link; 646 int old_speed; 647 int old_duplex; 648 int old_pause; 649 phy_interface_t phy_interface; 650 int phy_addr; 651 int ext_phy; 652 653 /* Interrupt variables */ 654 struct work_struct bcmgenet_irq_work; 655 int irq0; 656 int irq1; 657 int wol_irq; 658 bool wol_irq_disabled; 659 660 /* shared status */ 661 spinlock_t lock; 662 unsigned int irq0_stat; 663 664 /* HW descriptors/checksum variables */ 665 bool desc_64b_en; 666 bool desc_rxchk_en; 667 bool crc_fwd_en; 668 669 u32 dma_max_burst_length; 670 671 u32 msg_enable; 672 673 struct clk *clk; 674 struct platform_device *pdev; 675 struct platform_device *mii_pdev; 676 677 /* WOL */ 678 struct clk *clk_wol; 679 u32 wolopts; 680 681 struct bcmgenet_mib_counters mib; 682 683 struct ethtool_eee eee; 684 }; 685 686 #define GENET_IO_MACRO(name, offset) \ 687 static inline u32 bcmgenet_##name##_readl(struct bcmgenet_priv *priv, \ 688 u32 off) \ 689 { \ 690 /* MIPS chips strapped for BE will automagically configure the \ 691 * peripheral registers for CPU-native byte order. \ 692 */ \ 693 if (IS_ENABLED(CONFIG_MIPS) && IS_ENABLED(CONFIG_CPU_BIG_ENDIAN)) \ 694 return __raw_readl(priv->base + offset + off); \ 695 else \ 696 return readl_relaxed(priv->base + offset + off); \ 697 } \ 698 static inline void bcmgenet_##name##_writel(struct bcmgenet_priv *priv, \ 699 u32 val, u32 off) \ 700 { \ 701 if (IS_ENABLED(CONFIG_MIPS) && IS_ENABLED(CONFIG_CPU_BIG_ENDIAN)) \ 702 __raw_writel(val, priv->base + offset + off); \ 703 else \ 704 writel_relaxed(val, priv->base + offset + off); \ 705 } 706 707 GENET_IO_MACRO(ext, GENET_EXT_OFF); 708 GENET_IO_MACRO(umac, GENET_UMAC_OFF); 709 GENET_IO_MACRO(sys, GENET_SYS_OFF); 710 711 /* interrupt l2 registers accessors */ 712 GENET_IO_MACRO(intrl2_0, GENET_INTRL2_0_OFF); 713 GENET_IO_MACRO(intrl2_1, GENET_INTRL2_1_OFF); 714 715 /* HFB register accessors */ 716 GENET_IO_MACRO(hfb, priv->hw_params->hfb_offset); 717 718 /* GENET v2+ HFB control and filter len helpers */ 719 GENET_IO_MACRO(hfb_reg, priv->hw_params->hfb_reg_offset); 720 721 /* RBUF register accessors */ 722 GENET_IO_MACRO(rbuf, GENET_RBUF_OFF); 723 724 /* MDIO routines */ 725 int bcmgenet_mii_init(struct net_device *dev); 726 int bcmgenet_mii_config(struct net_device *dev, bool init); 727 int bcmgenet_mii_probe(struct net_device *dev); 728 void bcmgenet_mii_exit(struct net_device *dev); 729 void bcmgenet_phy_power_set(struct net_device *dev, bool enable); 730 void bcmgenet_mii_setup(struct net_device *dev); 731 732 /* Wake-on-LAN routines */ 733 void bcmgenet_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol); 734 int bcmgenet_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol); 735 int bcmgenet_wol_power_down_cfg(struct bcmgenet_priv *priv, 736 enum bcmgenet_power_mode mode); 737 void bcmgenet_wol_power_up_cfg(struct bcmgenet_priv *priv, 738 enum bcmgenet_power_mode mode); 739 740 #endif /* __BCMGENET_H__ */ 741