1 /* 2 * Copyright (c) 2014-2017 Broadcom 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License version 2 as 6 * published by the Free Software Foundation. 7 */ 8 9 #ifndef __BCMGENET_H__ 10 #define __BCMGENET_H__ 11 12 #include <linux/skbuff.h> 13 #include <linux/netdevice.h> 14 #include <linux/spinlock.h> 15 #include <linux/clk.h> 16 #include <linux/mii.h> 17 #include <linux/if_vlan.h> 18 #include <linux/phy.h> 19 20 /* total number of Buffer Descriptors, same for Rx/Tx */ 21 #define TOTAL_DESC 256 22 23 /* which ring is descriptor based */ 24 #define DESC_INDEX 16 25 26 /* Body(1500) + EH_SIZE(14) + VLANTAG(4) + BRCMTAG(6) + FCS(4) = 1528. 27 * 1536 is multiple of 256 bytes 28 */ 29 #define ENET_BRCM_TAG_LEN 6 30 #define ENET_PAD 8 31 #define ENET_MAX_MTU_SIZE (ETH_DATA_LEN + ETH_HLEN + VLAN_HLEN + \ 32 ENET_BRCM_TAG_LEN + ETH_FCS_LEN + ENET_PAD) 33 #define DMA_MAX_BURST_LENGTH 0x10 34 35 /* misc. configuration */ 36 #define CLEAR_ALL_HFB 0xFF 37 #define DMA_FC_THRESH_HI (TOTAL_DESC >> 4) 38 #define DMA_FC_THRESH_LO 5 39 40 /* 64B receive/transmit status block */ 41 struct status_64 { 42 u32 length_status; /* length and peripheral status */ 43 u32 ext_status; /* Extended status*/ 44 u32 rx_csum; /* partial rx checksum */ 45 u32 unused1[9]; /* unused */ 46 u32 tx_csum_info; /* Tx checksum info. */ 47 u32 unused2[3]; /* unused */ 48 }; 49 50 /* Rx status bits */ 51 #define STATUS_RX_EXT_MASK 0x1FFFFF 52 #define STATUS_RX_CSUM_MASK 0xFFFF 53 #define STATUS_RX_CSUM_OK 0x10000 54 #define STATUS_RX_CSUM_FR 0x20000 55 #define STATUS_RX_PROTO_TCP 0 56 #define STATUS_RX_PROTO_UDP 1 57 #define STATUS_RX_PROTO_ICMP 2 58 #define STATUS_RX_PROTO_OTHER 3 59 #define STATUS_RX_PROTO_MASK 3 60 #define STATUS_RX_PROTO_SHIFT 18 61 #define STATUS_FILTER_INDEX_MASK 0xFFFF 62 /* Tx status bits */ 63 #define STATUS_TX_CSUM_START_MASK 0X7FFF 64 #define STATUS_TX_CSUM_START_SHIFT 16 65 #define STATUS_TX_CSUM_PROTO_UDP 0x8000 66 #define STATUS_TX_CSUM_OFFSET_MASK 0x7FFF 67 #define STATUS_TX_CSUM_LV 0x80000000 68 69 /* DMA Descriptor */ 70 #define DMA_DESC_LENGTH_STATUS 0x00 /* in bytes of data in buffer */ 71 #define DMA_DESC_ADDRESS_LO 0x04 /* lower bits of PA */ 72 #define DMA_DESC_ADDRESS_HI 0x08 /* upper 32 bits of PA, GENETv4+ */ 73 74 /* Rx/Tx common counter group */ 75 struct bcmgenet_pkt_counters { 76 u32 cnt_64; /* RO Received/Transmited 64 bytes packet */ 77 u32 cnt_127; /* RO Rx/Tx 127 bytes packet */ 78 u32 cnt_255; /* RO Rx/Tx 65-255 bytes packet */ 79 u32 cnt_511; /* RO Rx/Tx 256-511 bytes packet */ 80 u32 cnt_1023; /* RO Rx/Tx 512-1023 bytes packet */ 81 u32 cnt_1518; /* RO Rx/Tx 1024-1518 bytes packet */ 82 u32 cnt_mgv; /* RO Rx/Tx 1519-1522 good VLAN packet */ 83 u32 cnt_2047; /* RO Rx/Tx 1522-2047 bytes packet*/ 84 u32 cnt_4095; /* RO Rx/Tx 2048-4095 bytes packet*/ 85 u32 cnt_9216; /* RO Rx/Tx 4096-9216 bytes packet*/ 86 }; 87 88 /* RSV, Receive Status Vector */ 89 struct bcmgenet_rx_counters { 90 struct bcmgenet_pkt_counters pkt_cnt; 91 u32 pkt; /* RO (0x428) Received pkt count*/ 92 u32 bytes; /* RO Received byte count */ 93 u32 mca; /* RO # of Received multicast pkt */ 94 u32 bca; /* RO # of Receive broadcast pkt */ 95 u32 fcs; /* RO # of Received FCS error */ 96 u32 cf; /* RO # of Received control frame pkt*/ 97 u32 pf; /* RO # of Received pause frame pkt */ 98 u32 uo; /* RO # of unknown op code pkt */ 99 u32 aln; /* RO # of alignment error count */ 100 u32 flr; /* RO # of frame length out of range count */ 101 u32 cde; /* RO # of code error pkt */ 102 u32 fcr; /* RO # of carrier sense error pkt */ 103 u32 ovr; /* RO # of oversize pkt*/ 104 u32 jbr; /* RO # of jabber count */ 105 u32 mtue; /* RO # of MTU error pkt*/ 106 u32 pok; /* RO # of Received good pkt */ 107 u32 uc; /* RO # of unicast pkt */ 108 u32 ppp; /* RO # of PPP pkt */ 109 u32 rcrc; /* RO (0x470),# of CRC match pkt */ 110 }; 111 112 /* TSV, Transmit Status Vector */ 113 struct bcmgenet_tx_counters { 114 struct bcmgenet_pkt_counters pkt_cnt; 115 u32 pkts; /* RO (0x4a8) Transmited pkt */ 116 u32 mca; /* RO # of xmited multicast pkt */ 117 u32 bca; /* RO # of xmited broadcast pkt */ 118 u32 pf; /* RO # of xmited pause frame count */ 119 u32 cf; /* RO # of xmited control frame count */ 120 u32 fcs; /* RO # of xmited FCS error count */ 121 u32 ovr; /* RO # of xmited oversize pkt */ 122 u32 drf; /* RO # of xmited deferral pkt */ 123 u32 edf; /* RO # of xmited Excessive deferral pkt*/ 124 u32 scl; /* RO # of xmited single collision pkt */ 125 u32 mcl; /* RO # of xmited multiple collision pkt*/ 126 u32 lcl; /* RO # of xmited late collision pkt */ 127 u32 ecl; /* RO # of xmited excessive collision pkt*/ 128 u32 frg; /* RO # of xmited fragments pkt*/ 129 u32 ncl; /* RO # of xmited total collision count */ 130 u32 jbr; /* RO # of xmited jabber count*/ 131 u32 bytes; /* RO # of xmited byte count */ 132 u32 pok; /* RO # of xmited good pkt */ 133 u32 uc; /* RO (0x0x4f0)# of xmited unitcast pkt */ 134 }; 135 136 struct bcmgenet_mib_counters { 137 struct bcmgenet_rx_counters rx; 138 struct bcmgenet_tx_counters tx; 139 u32 rx_runt_cnt; 140 u32 rx_runt_fcs; 141 u32 rx_runt_fcs_align; 142 u32 rx_runt_bytes; 143 u32 rbuf_ovflow_cnt; 144 u32 rbuf_err_cnt; 145 u32 mdf_err_cnt; 146 u32 alloc_rx_buff_failed; 147 u32 rx_dma_failed; 148 u32 tx_dma_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) 256 257 #define RBUF_ENERGY_CTRL 0x9c 258 #define RBUF_EEE_EN (1 << 0) 259 #define RBUF_PM_EN (1 << 1) 260 261 #define RBUF_TBUF_SIZE_CTRL 0xb4 262 263 #define RBUF_HFB_CTRL_V1 0x38 264 #define RBUF_HFB_FILTER_EN_SHIFT 16 265 #define RBUF_HFB_FILTER_EN_MASK 0xffff0000 266 #define RBUF_HFB_EN (1 << 0) 267 #define RBUF_HFB_256B (1 << 1) 268 #define RBUF_ACPI_EN (1 << 2) 269 270 #define RBUF_HFB_LEN_V1 0x3C 271 #define RBUF_FLTR_LEN_MASK 0xFF 272 #define RBUF_FLTR_LEN_SHIFT 8 273 274 #define TBUF_CTRL 0x00 275 #define TBUF_BP_MC 0x0C 276 #define TBUF_ENERGY_CTRL 0x14 277 #define TBUF_EEE_EN (1 << 0) 278 #define TBUF_PM_EN (1 << 1) 279 280 #define TBUF_CTRL_V1 0x80 281 #define TBUF_BP_MC_V1 0xA0 282 283 #define HFB_CTRL 0x00 284 #define HFB_FLT_ENABLE_V3PLUS 0x04 285 #define HFB_FLT_LEN_V2 0x04 286 #define HFB_FLT_LEN_V3PLUS 0x1C 287 288 /* uniMac intrl2 registers */ 289 #define INTRL2_CPU_STAT 0x00 290 #define INTRL2_CPU_SET 0x04 291 #define INTRL2_CPU_CLEAR 0x08 292 #define INTRL2_CPU_MASK_STATUS 0x0C 293 #define INTRL2_CPU_MASK_SET 0x10 294 #define INTRL2_CPU_MASK_CLEAR 0x14 295 296 /* INTRL2 instance 0 definitions */ 297 #define UMAC_IRQ_SCB (1 << 0) 298 #define UMAC_IRQ_EPHY (1 << 1) 299 #define UMAC_IRQ_PHY_DET_R (1 << 2) 300 #define UMAC_IRQ_PHY_DET_F (1 << 3) 301 #define UMAC_IRQ_LINK_UP (1 << 4) 302 #define UMAC_IRQ_LINK_DOWN (1 << 5) 303 #define UMAC_IRQ_LINK_EVENT (UMAC_IRQ_LINK_UP | UMAC_IRQ_LINK_DOWN) 304 #define UMAC_IRQ_UMAC (1 << 6) 305 #define UMAC_IRQ_UMAC_TSV (1 << 7) 306 #define UMAC_IRQ_TBUF_UNDERRUN (1 << 8) 307 #define UMAC_IRQ_RBUF_OVERFLOW (1 << 9) 308 #define UMAC_IRQ_HFB_SM (1 << 10) 309 #define UMAC_IRQ_HFB_MM (1 << 11) 310 #define UMAC_IRQ_MPD_R (1 << 12) 311 #define UMAC_IRQ_RXDMA_MBDONE (1 << 13) 312 #define UMAC_IRQ_RXDMA_PDONE (1 << 14) 313 #define UMAC_IRQ_RXDMA_BDONE (1 << 15) 314 #define UMAC_IRQ_RXDMA_DONE UMAC_IRQ_RXDMA_MBDONE 315 #define UMAC_IRQ_TXDMA_MBDONE (1 << 16) 316 #define UMAC_IRQ_TXDMA_PDONE (1 << 17) 317 #define UMAC_IRQ_TXDMA_BDONE (1 << 18) 318 #define UMAC_IRQ_TXDMA_DONE UMAC_IRQ_TXDMA_MBDONE 319 320 /* Only valid for GENETv3+ */ 321 #define UMAC_IRQ_MDIO_DONE (1 << 23) 322 #define UMAC_IRQ_MDIO_ERROR (1 << 24) 323 324 /* INTRL2 instance 1 definitions */ 325 #define UMAC_IRQ1_TX_INTR_MASK 0xFFFF 326 #define UMAC_IRQ1_RX_INTR_MASK 0xFFFF 327 #define UMAC_IRQ1_RX_INTR_SHIFT 16 328 329 /* Register block offsets */ 330 #define GENET_SYS_OFF 0x0000 331 #define GENET_GR_BRIDGE_OFF 0x0040 332 #define GENET_EXT_OFF 0x0080 333 #define GENET_INTRL2_0_OFF 0x0200 334 #define GENET_INTRL2_1_OFF 0x0240 335 #define GENET_RBUF_OFF 0x0300 336 #define GENET_UMAC_OFF 0x0800 337 338 /* SYS block offsets and register definitions */ 339 #define SYS_REV_CTRL 0x00 340 #define SYS_PORT_CTRL 0x04 341 #define PORT_MODE_INT_EPHY 0 342 #define PORT_MODE_INT_GPHY 1 343 #define PORT_MODE_EXT_EPHY 2 344 #define PORT_MODE_EXT_GPHY 3 345 #define PORT_MODE_EXT_RVMII_25 (4 | BIT(4)) 346 #define PORT_MODE_EXT_RVMII_50 4 347 #define LED_ACT_SOURCE_MAC (1 << 9) 348 349 #define SYS_RBUF_FLUSH_CTRL 0x08 350 #define SYS_TBUF_FLUSH_CTRL 0x0C 351 #define RBUF_FLUSH_CTRL_V1 0x04 352 353 /* Ext block register offsets and definitions */ 354 #define EXT_EXT_PWR_MGMT 0x00 355 #define EXT_PWR_DOWN_BIAS (1 << 0) 356 #define EXT_PWR_DOWN_DLL (1 << 1) 357 #define EXT_PWR_DOWN_PHY (1 << 2) 358 #define EXT_PWR_DN_EN_LD (1 << 3) 359 #define EXT_ENERGY_DET (1 << 4) 360 #define EXT_IDDQ_FROM_PHY (1 << 5) 361 #define EXT_PHY_RESET (1 << 8) 362 #define EXT_ENERGY_DET_MASK (1 << 12) 363 364 #define EXT_RGMII_OOB_CTRL 0x0C 365 #define RGMII_MODE_EN_V123 (1 << 0) 366 #define RGMII_LINK (1 << 4) 367 #define OOB_DISABLE (1 << 5) 368 #define RGMII_MODE_EN (1 << 6) 369 #define ID_MODE_DIS (1 << 16) 370 371 #define EXT_GPHY_CTRL 0x1C 372 #define EXT_CFG_IDDQ_BIAS (1 << 0) 373 #define EXT_CFG_PWR_DOWN (1 << 1) 374 #define EXT_CK25_DIS (1 << 4) 375 #define EXT_GPHY_RESET (1 << 5) 376 377 /* DMA rings size */ 378 #define DMA_RING_SIZE (0x40) 379 #define DMA_RINGS_SIZE (DMA_RING_SIZE * (DESC_INDEX + 1)) 380 381 /* DMA registers common definitions */ 382 #define DMA_RW_POINTER_MASK 0x1FF 383 #define DMA_P_INDEX_DISCARD_CNT_MASK 0xFFFF 384 #define DMA_P_INDEX_DISCARD_CNT_SHIFT 16 385 #define DMA_BUFFER_DONE_CNT_MASK 0xFFFF 386 #define DMA_BUFFER_DONE_CNT_SHIFT 16 387 #define DMA_P_INDEX_MASK 0xFFFF 388 #define DMA_C_INDEX_MASK 0xFFFF 389 390 /* DMA ring size register */ 391 #define DMA_RING_SIZE_MASK 0xFFFF 392 #define DMA_RING_SIZE_SHIFT 16 393 #define DMA_RING_BUFFER_SIZE_MASK 0xFFFF 394 395 /* DMA interrupt threshold register */ 396 #define DMA_INTR_THRESHOLD_MASK 0x01FF 397 398 /* DMA XON/XOFF register */ 399 #define DMA_XON_THREHOLD_MASK 0xFFFF 400 #define DMA_XOFF_THRESHOLD_MASK 0xFFFF 401 #define DMA_XOFF_THRESHOLD_SHIFT 16 402 403 /* DMA flow period register */ 404 #define DMA_FLOW_PERIOD_MASK 0xFFFF 405 #define DMA_MAX_PKT_SIZE_MASK 0xFFFF 406 #define DMA_MAX_PKT_SIZE_SHIFT 16 407 408 409 /* DMA control register */ 410 #define DMA_EN (1 << 0) 411 #define DMA_RING_BUF_EN_SHIFT 0x01 412 #define DMA_RING_BUF_EN_MASK 0xFFFF 413 #define DMA_TSB_SWAP_EN (1 << 20) 414 415 /* DMA status register */ 416 #define DMA_DISABLED (1 << 0) 417 #define DMA_DESC_RAM_INIT_BUSY (1 << 1) 418 419 /* DMA SCB burst size register */ 420 #define DMA_SCB_BURST_SIZE_MASK 0x1F 421 422 /* DMA activity vector register */ 423 #define DMA_ACTIVITY_VECTOR_MASK 0x1FFFF 424 425 /* DMA backpressure mask register */ 426 #define DMA_BACKPRESSURE_MASK 0x1FFFF 427 #define DMA_PFC_ENABLE (1 << 31) 428 429 /* DMA backpressure status register */ 430 #define DMA_BACKPRESSURE_STATUS_MASK 0x1FFFF 431 432 /* DMA override register */ 433 #define DMA_LITTLE_ENDIAN_MODE (1 << 0) 434 #define DMA_REGISTER_MODE (1 << 1) 435 436 /* DMA timeout register */ 437 #define DMA_TIMEOUT_MASK 0xFFFF 438 #define DMA_TIMEOUT_VAL 5000 /* micro seconds */ 439 440 /* TDMA rate limiting control register */ 441 #define DMA_RATE_LIMIT_EN_MASK 0xFFFF 442 443 /* TDMA arbitration control register */ 444 #define DMA_ARBITER_MODE_MASK 0x03 445 #define DMA_RING_BUF_PRIORITY_MASK 0x1F 446 #define DMA_RING_BUF_PRIORITY_SHIFT 5 447 #define DMA_PRIO_REG_INDEX(q) ((q) / 6) 448 #define DMA_PRIO_REG_SHIFT(q) (((q) % 6) * DMA_RING_BUF_PRIORITY_SHIFT) 449 #define DMA_RATE_ADJ_MASK 0xFF 450 451 /* Tx/Rx Dma Descriptor common bits*/ 452 #define DMA_BUFLENGTH_MASK 0x0fff 453 #define DMA_BUFLENGTH_SHIFT 16 454 #define DMA_OWN 0x8000 455 #define DMA_EOP 0x4000 456 #define DMA_SOP 0x2000 457 #define DMA_WRAP 0x1000 458 /* Tx specific Dma descriptor bits */ 459 #define DMA_TX_UNDERRUN 0x0200 460 #define DMA_TX_APPEND_CRC 0x0040 461 #define DMA_TX_OW_CRC 0x0020 462 #define DMA_TX_DO_CSUM 0x0010 463 #define DMA_TX_QTAG_SHIFT 7 464 465 /* Rx Specific Dma descriptor bits */ 466 #define DMA_RX_CHK_V3PLUS 0x8000 467 #define DMA_RX_CHK_V12 0x1000 468 #define DMA_RX_BRDCAST 0x0040 469 #define DMA_RX_MULT 0x0020 470 #define DMA_RX_LG 0x0010 471 #define DMA_RX_NO 0x0008 472 #define DMA_RX_RXER 0x0004 473 #define DMA_RX_CRC_ERROR 0x0002 474 #define DMA_RX_OV 0x0001 475 #define DMA_RX_FI_MASK 0x001F 476 #define DMA_RX_FI_SHIFT 0x0007 477 #define DMA_DESC_ALLOC_MASK 0x00FF 478 479 #define DMA_ARBITER_RR 0x00 480 #define DMA_ARBITER_WRR 0x01 481 #define DMA_ARBITER_SP 0x02 482 483 struct enet_cb { 484 struct sk_buff *skb; 485 void __iomem *bd_addr; 486 DEFINE_DMA_UNMAP_ADDR(dma_addr); 487 DEFINE_DMA_UNMAP_LEN(dma_len); 488 }; 489 490 /* power management mode */ 491 enum bcmgenet_power_mode { 492 GENET_POWER_CABLE_SENSE = 0, 493 GENET_POWER_PASSIVE, 494 GENET_POWER_WOL_MAGIC, 495 }; 496 497 struct bcmgenet_priv; 498 499 /* We support both runtime GENET detection and compile-time 500 * to optimize code-paths for a given hardware 501 */ 502 enum bcmgenet_version { 503 GENET_V1 = 1, 504 GENET_V2, 505 GENET_V3, 506 GENET_V4 507 }; 508 509 #define GENET_IS_V1(p) ((p)->version == GENET_V1) 510 #define GENET_IS_V2(p) ((p)->version == GENET_V2) 511 #define GENET_IS_V3(p) ((p)->version == GENET_V3) 512 #define GENET_IS_V4(p) ((p)->version == GENET_V4) 513 514 /* Hardware flags */ 515 #define GENET_HAS_40BITS (1 << 0) 516 #define GENET_HAS_EXT (1 << 1) 517 #define GENET_HAS_MDIO_INTR (1 << 2) 518 #define GENET_HAS_MOCA_LINK_DET (1 << 3) 519 520 /* BCMGENET hardware parameters, keep this structure nicely aligned 521 * since it is going to be used in hot paths 522 */ 523 struct bcmgenet_hw_params { 524 u8 tx_queues; 525 u8 tx_bds_per_q; 526 u8 rx_queues; 527 u8 rx_bds_per_q; 528 u8 bp_in_en_shift; 529 u32 bp_in_mask; 530 u8 hfb_filter_cnt; 531 u8 hfb_filter_size; 532 u8 qtag_mask; 533 u16 tbuf_offset; 534 u32 hfb_offset; 535 u32 hfb_reg_offset; 536 u32 rdma_offset; 537 u32 tdma_offset; 538 u32 words_per_bd; 539 u32 flags; 540 }; 541 542 struct bcmgenet_tx_ring { 543 spinlock_t lock; /* ring lock */ 544 struct napi_struct napi; /* NAPI per tx queue */ 545 unsigned int index; /* ring index */ 546 unsigned int queue; /* queue index */ 547 struct enet_cb *cbs; /* tx ring buffer control block*/ 548 unsigned int size; /* size of each tx ring */ 549 unsigned int clean_ptr; /* Tx ring clean pointer */ 550 unsigned int c_index; /* last consumer index of each ring*/ 551 unsigned int free_bds; /* # of free bds for each ring */ 552 unsigned int write_ptr; /* Tx ring write pointer SW copy */ 553 unsigned int prod_index; /* Tx ring producer index SW copy */ 554 unsigned int cb_ptr; /* Tx ring initial CB ptr */ 555 unsigned int end_ptr; /* Tx ring end CB ptr */ 556 void (*int_enable)(struct bcmgenet_tx_ring *); 557 void (*int_disable)(struct bcmgenet_tx_ring *); 558 struct bcmgenet_priv *priv; 559 }; 560 561 struct bcmgenet_rx_ring { 562 struct napi_struct napi; /* Rx NAPI struct */ 563 unsigned int index; /* Rx ring index */ 564 struct enet_cb *cbs; /* Rx ring buffer control block */ 565 unsigned int size; /* Rx ring size */ 566 unsigned int c_index; /* Rx last consumer index */ 567 unsigned int read_ptr; /* Rx ring read pointer */ 568 unsigned int cb_ptr; /* Rx ring initial CB ptr */ 569 unsigned int end_ptr; /* Rx ring end CB ptr */ 570 unsigned int old_discards; 571 void (*int_enable)(struct bcmgenet_rx_ring *); 572 void (*int_disable)(struct bcmgenet_rx_ring *); 573 struct bcmgenet_priv *priv; 574 }; 575 576 /* device context */ 577 struct bcmgenet_priv { 578 void __iomem *base; 579 enum bcmgenet_version version; 580 struct net_device *dev; 581 582 /* transmit variables */ 583 void __iomem *tx_bds; 584 struct enet_cb *tx_cbs; 585 unsigned int num_tx_bds; 586 587 struct bcmgenet_tx_ring tx_rings[DESC_INDEX + 1]; 588 589 /* receive variables */ 590 void __iomem *rx_bds; 591 struct enet_cb *rx_cbs; 592 unsigned int num_rx_bds; 593 unsigned int rx_buf_len; 594 595 struct bcmgenet_rx_ring rx_rings[DESC_INDEX + 1]; 596 597 /* other misc variables */ 598 struct bcmgenet_hw_params *hw_params; 599 600 /* MDIO bus variables */ 601 wait_queue_head_t wq; 602 struct phy_device *phydev; 603 bool internal_phy; 604 struct device_node *phy_dn; 605 struct device_node *mdio_dn; 606 struct mii_bus *mii_bus; 607 u16 gphy_rev; 608 struct clk *clk_eee; 609 bool clk_eee_enabled; 610 611 /* PHY device variables */ 612 int old_link; 613 int old_speed; 614 int old_duplex; 615 int old_pause; 616 phy_interface_t phy_interface; 617 int phy_addr; 618 int ext_phy; 619 620 /* Interrupt variables */ 621 struct work_struct bcmgenet_irq_work; 622 int irq0; 623 int irq1; 624 unsigned int irq0_stat; 625 unsigned int irq1_stat; 626 int wol_irq; 627 bool wol_irq_disabled; 628 629 /* HW descriptors/checksum variables */ 630 bool desc_64b_en; 631 bool desc_rxchk_en; 632 bool crc_fwd_en; 633 634 unsigned int dma_rx_chk_bit; 635 636 u32 msg_enable; 637 638 struct clk *clk; 639 struct platform_device *pdev; 640 641 /* WOL */ 642 struct clk *clk_wol; 643 u32 wolopts; 644 645 struct bcmgenet_mib_counters mib; 646 647 struct ethtool_eee eee; 648 }; 649 650 #define GENET_IO_MACRO(name, offset) \ 651 static inline u32 bcmgenet_##name##_readl(struct bcmgenet_priv *priv, \ 652 u32 off) \ 653 { \ 654 return __raw_readl(priv->base + offset + off); \ 655 } \ 656 static inline void bcmgenet_##name##_writel(struct bcmgenet_priv *priv, \ 657 u32 val, u32 off) \ 658 { \ 659 __raw_writel(val, priv->base + offset + off); \ 660 } 661 662 GENET_IO_MACRO(ext, GENET_EXT_OFF); 663 GENET_IO_MACRO(umac, GENET_UMAC_OFF); 664 GENET_IO_MACRO(sys, GENET_SYS_OFF); 665 666 /* interrupt l2 registers accessors */ 667 GENET_IO_MACRO(intrl2_0, GENET_INTRL2_0_OFF); 668 GENET_IO_MACRO(intrl2_1, GENET_INTRL2_1_OFF); 669 670 /* HFB register accessors */ 671 GENET_IO_MACRO(hfb, priv->hw_params->hfb_offset); 672 673 /* GENET v2+ HFB control and filter len helpers */ 674 GENET_IO_MACRO(hfb_reg, priv->hw_params->hfb_reg_offset); 675 676 /* RBUF register accessors */ 677 GENET_IO_MACRO(rbuf, GENET_RBUF_OFF); 678 679 /* MDIO routines */ 680 int bcmgenet_mii_init(struct net_device *dev); 681 int bcmgenet_mii_config(struct net_device *dev); 682 int bcmgenet_mii_probe(struct net_device *dev); 683 void bcmgenet_mii_exit(struct net_device *dev); 684 void bcmgenet_mii_reset(struct net_device *dev); 685 void bcmgenet_phy_power_set(struct net_device *dev, bool enable); 686 void bcmgenet_mii_setup(struct net_device *dev); 687 688 /* Wake-on-LAN routines */ 689 void bcmgenet_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol); 690 int bcmgenet_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol); 691 int bcmgenet_wol_power_down_cfg(struct bcmgenet_priv *priv, 692 enum bcmgenet_power_mode mode); 693 void bcmgenet_wol_power_up_cfg(struct bcmgenet_priv *priv, 694 enum bcmgenet_power_mode mode); 695 696 #endif /* __BCMGENET_H__ */ 697