1 /* This program is free software; you can redistribute it and/or modify 2 * it under the terms of the GNU General Public License as published by 3 * the Free Software Foundation; version 2 of the License 4 * 5 * This program is distributed in the hope that it will be useful, 6 * but WITHOUT ANY WARRANTY; without even the implied warranty of 7 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 8 * GNU General Public License for more details. 9 * 10 * Copyright (C) 2009-2016 John Crispin <blogic@openwrt.org> 11 * Copyright (C) 2009-2016 Felix Fietkau <nbd@openwrt.org> 12 * Copyright (C) 2013-2016 Michael Lee <igvtee@gmail.com> 13 */ 14 15 #ifndef MTK_ETH_H 16 #define MTK_ETH_H 17 18 #define MTK_QDMA_PAGE_SIZE 2048 19 #define MTK_MAX_RX_LENGTH 1536 20 #define MTK_TX_DMA_BUF_LEN 0x3fff 21 #define MTK_DMA_SIZE 256 22 #define MTK_NAPI_WEIGHT 64 23 #define MTK_MAC_COUNT 2 24 #define MTK_RX_ETH_HLEN (VLAN_ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN) 25 #define MTK_RX_HLEN (NET_SKB_PAD + MTK_RX_ETH_HLEN + NET_IP_ALIGN) 26 #define MTK_DMA_DUMMY_DESC 0xffffffff 27 #define MTK_DEFAULT_MSG_ENABLE (NETIF_MSG_DRV | \ 28 NETIF_MSG_PROBE | \ 29 NETIF_MSG_LINK | \ 30 NETIF_MSG_TIMER | \ 31 NETIF_MSG_IFDOWN | \ 32 NETIF_MSG_IFUP | \ 33 NETIF_MSG_RX_ERR | \ 34 NETIF_MSG_TX_ERR) 35 #define MTK_HW_FEATURES (NETIF_F_IP_CSUM | \ 36 NETIF_F_RXCSUM | \ 37 NETIF_F_HW_VLAN_CTAG_TX | \ 38 NETIF_F_HW_VLAN_CTAG_RX | \ 39 NETIF_F_SG | NETIF_F_TSO | \ 40 NETIF_F_TSO6 | \ 41 NETIF_F_IPV6_CSUM) 42 #define NEXT_RX_DESP_IDX(X, Y) (((X) + 1) & ((Y) - 1)) 43 44 #define MTK_MAX_RX_RING_NUM 4 45 #define MTK_HW_LRO_DMA_SIZE 8 46 47 #define MTK_MAX_LRO_RX_LENGTH (4096 * 3) 48 #define MTK_MAX_LRO_IP_CNT 2 49 #define MTK_HW_LRO_TIMER_UNIT 1 /* 20 us */ 50 #define MTK_HW_LRO_REFRESH_TIME 50000 /* 1 sec. */ 51 #define MTK_HW_LRO_AGG_TIME 10 /* 200us */ 52 #define MTK_HW_LRO_AGE_TIME 50 /* 1ms */ 53 #define MTK_HW_LRO_MAX_AGG_CNT 64 54 #define MTK_HW_LRO_BW_THRE 3000 55 #define MTK_HW_LRO_REPLACE_DELTA 1000 56 #define MTK_HW_LRO_SDL_REMAIN_ROOM 1522 57 58 /* Frame Engine Global Reset Register */ 59 #define MTK_RST_GL 0x04 60 #define RST_GL_PSE BIT(0) 61 62 /* Frame Engine Interrupt Status Register */ 63 #define MTK_INT_STATUS2 0x08 64 #define MTK_GDM1_AF BIT(28) 65 #define MTK_GDM2_AF BIT(29) 66 67 /* PDMA HW LRO Alter Flow Timer Register */ 68 #define MTK_PDMA_LRO_ALT_REFRESH_TIMER 0x1c 69 70 /* Frame Engine Interrupt Grouping Register */ 71 #define MTK_FE_INT_GRP 0x20 72 73 /* CDMP Exgress Control Register */ 74 #define MTK_CDMP_EG_CTRL 0x404 75 76 /* GDM Exgress Control Register */ 77 #define MTK_GDMA_FWD_CFG(x) (0x500 + (x * 0x1000)) 78 #define MTK_GDMA_ICS_EN BIT(22) 79 #define MTK_GDMA_TCS_EN BIT(21) 80 #define MTK_GDMA_UCS_EN BIT(20) 81 82 /* Unicast Filter MAC Address Register - Low */ 83 #define MTK_GDMA_MAC_ADRL(x) (0x508 + (x * 0x1000)) 84 85 /* Unicast Filter MAC Address Register - High */ 86 #define MTK_GDMA_MAC_ADRH(x) (0x50C + (x * 0x1000)) 87 88 /* PDMA RX Base Pointer Register */ 89 #define MTK_PRX_BASE_PTR0 0x900 90 #define MTK_PRX_BASE_PTR_CFG(x) (MTK_PRX_BASE_PTR0 + (x * 0x10)) 91 92 /* PDMA RX Maximum Count Register */ 93 #define MTK_PRX_MAX_CNT0 0x904 94 #define MTK_PRX_MAX_CNT_CFG(x) (MTK_PRX_MAX_CNT0 + (x * 0x10)) 95 96 /* PDMA RX CPU Pointer Register */ 97 #define MTK_PRX_CRX_IDX0 0x908 98 #define MTK_PRX_CRX_IDX_CFG(x) (MTK_PRX_CRX_IDX0 + (x * 0x10)) 99 100 /* PDMA HW LRO Control Registers */ 101 #define MTK_PDMA_LRO_CTRL_DW0 0x980 102 #define MTK_LRO_EN BIT(0) 103 #define MTK_L3_CKS_UPD_EN BIT(7) 104 #define MTK_LRO_ALT_PKT_CNT_MODE BIT(21) 105 #define MTK_LRO_RING_RELINQUISH_REQ (0x7 << 26) 106 #define MTK_LRO_RING_RELINQUISH_DONE (0x7 << 29) 107 108 #define MTK_PDMA_LRO_CTRL_DW1 0x984 109 #define MTK_PDMA_LRO_CTRL_DW2 0x988 110 #define MTK_PDMA_LRO_CTRL_DW3 0x98c 111 #define MTK_ADMA_MODE BIT(15) 112 #define MTK_LRO_MIN_RXD_SDL (MTK_HW_LRO_SDL_REMAIN_ROOM << 16) 113 114 /* PDMA Global Configuration Register */ 115 #define MTK_PDMA_GLO_CFG 0xa04 116 #define MTK_MULTI_EN BIT(10) 117 118 /* PDMA Reset Index Register */ 119 #define MTK_PDMA_RST_IDX 0xa08 120 #define MTK_PST_DRX_IDX0 BIT(16) 121 #define MTK_PST_DRX_IDX_CFG(x) (MTK_PST_DRX_IDX0 << (x)) 122 123 /* PDMA Delay Interrupt Register */ 124 #define MTK_PDMA_DELAY_INT 0xa0c 125 126 /* PDMA Interrupt Status Register */ 127 #define MTK_PDMA_INT_STATUS 0xa20 128 129 /* PDMA Interrupt Mask Register */ 130 #define MTK_PDMA_INT_MASK 0xa28 131 132 /* PDMA HW LRO Alter Flow Delta Register */ 133 #define MTK_PDMA_LRO_ALT_SCORE_DELTA 0xa4c 134 135 /* PDMA Interrupt grouping registers */ 136 #define MTK_PDMA_INT_GRP1 0xa50 137 #define MTK_PDMA_INT_GRP2 0xa54 138 139 /* PDMA HW LRO IP Setting Registers */ 140 #define MTK_LRO_RX_RING0_DIP_DW0 0xb04 141 #define MTK_LRO_DIP_DW0_CFG(x) (MTK_LRO_RX_RING0_DIP_DW0 + (x * 0x40)) 142 #define MTK_RING_MYIP_VLD BIT(9) 143 144 /* PDMA HW LRO Ring Control Registers */ 145 #define MTK_LRO_RX_RING0_CTRL_DW1 0xb28 146 #define MTK_LRO_RX_RING0_CTRL_DW2 0xb2c 147 #define MTK_LRO_RX_RING0_CTRL_DW3 0xb30 148 #define MTK_LRO_CTRL_DW1_CFG(x) (MTK_LRO_RX_RING0_CTRL_DW1 + (x * 0x40)) 149 #define MTK_LRO_CTRL_DW2_CFG(x) (MTK_LRO_RX_RING0_CTRL_DW2 + (x * 0x40)) 150 #define MTK_LRO_CTRL_DW3_CFG(x) (MTK_LRO_RX_RING0_CTRL_DW3 + (x * 0x40)) 151 #define MTK_RING_AGE_TIME_L ((MTK_HW_LRO_AGE_TIME & 0x3ff) << 22) 152 #define MTK_RING_AGE_TIME_H ((MTK_HW_LRO_AGE_TIME >> 10) & 0x3f) 153 #define MTK_RING_AUTO_LERAN_MODE (3 << 6) 154 #define MTK_RING_VLD BIT(8) 155 #define MTK_RING_MAX_AGG_TIME ((MTK_HW_LRO_AGG_TIME & 0xffff) << 10) 156 #define MTK_RING_MAX_AGG_CNT_L ((MTK_HW_LRO_MAX_AGG_CNT & 0x3f) << 26) 157 #define MTK_RING_MAX_AGG_CNT_H ((MTK_HW_LRO_MAX_AGG_CNT >> 6) & 0x3) 158 159 /* QDMA TX Queue Configuration Registers */ 160 #define MTK_QTX_CFG(x) (0x1800 + (x * 0x10)) 161 #define QDMA_RES_THRES 4 162 163 /* QDMA TX Queue Scheduler Registers */ 164 #define MTK_QTX_SCH(x) (0x1804 + (x * 0x10)) 165 166 /* QDMA RX Base Pointer Register */ 167 #define MTK_QRX_BASE_PTR0 0x1900 168 169 /* QDMA RX Maximum Count Register */ 170 #define MTK_QRX_MAX_CNT0 0x1904 171 172 /* QDMA RX CPU Pointer Register */ 173 #define MTK_QRX_CRX_IDX0 0x1908 174 175 /* QDMA RX DMA Pointer Register */ 176 #define MTK_QRX_DRX_IDX0 0x190C 177 178 /* QDMA Global Configuration Register */ 179 #define MTK_QDMA_GLO_CFG 0x1A04 180 #define MTK_RX_2B_OFFSET BIT(31) 181 #define MTK_RX_BT_32DWORDS (3 << 11) 182 #define MTK_NDP_CO_PRO BIT(10) 183 #define MTK_TX_WB_DDONE BIT(6) 184 #define MTK_DMA_SIZE_16DWORDS (2 << 4) 185 #define MTK_RX_DMA_BUSY BIT(3) 186 #define MTK_TX_DMA_BUSY BIT(1) 187 #define MTK_RX_DMA_EN BIT(2) 188 #define MTK_TX_DMA_EN BIT(0) 189 #define MTK_DMA_BUSY_TIMEOUT HZ 190 191 /* QDMA Reset Index Register */ 192 #define MTK_QDMA_RST_IDX 0x1A08 193 194 /* QDMA Delay Interrupt Register */ 195 #define MTK_QDMA_DELAY_INT 0x1A0C 196 197 /* QDMA Flow Control Register */ 198 #define MTK_QDMA_FC_THRES 0x1A10 199 #define FC_THRES_DROP_MODE BIT(20) 200 #define FC_THRES_DROP_EN (7 << 16) 201 #define FC_THRES_MIN 0x4444 202 203 /* QDMA Interrupt Status Register */ 204 #define MTK_QMTK_INT_STATUS 0x1A18 205 #define MTK_RX_DONE_INT3 BIT(19) 206 #define MTK_RX_DONE_INT2 BIT(18) 207 #define MTK_RX_DONE_INT1 BIT(17) 208 #define MTK_RX_DONE_INT0 BIT(16) 209 #define MTK_TX_DONE_INT3 BIT(3) 210 #define MTK_TX_DONE_INT2 BIT(2) 211 #define MTK_TX_DONE_INT1 BIT(1) 212 #define MTK_TX_DONE_INT0 BIT(0) 213 #define MTK_RX_DONE_INT (MTK_RX_DONE_INT0 | MTK_RX_DONE_INT1 | \ 214 MTK_RX_DONE_INT2 | MTK_RX_DONE_INT3) 215 #define MTK_TX_DONE_INT (MTK_TX_DONE_INT0 | MTK_TX_DONE_INT1 | \ 216 MTK_TX_DONE_INT2 | MTK_TX_DONE_INT3) 217 218 /* QDMA Interrupt grouping registers */ 219 #define MTK_QDMA_INT_GRP1 0x1a20 220 #define MTK_QDMA_INT_GRP2 0x1a24 221 #define MTK_RLS_DONE_INT BIT(0) 222 223 /* QDMA Interrupt Status Register */ 224 #define MTK_QDMA_INT_MASK 0x1A1C 225 226 /* QDMA Interrupt Mask Register */ 227 #define MTK_QDMA_HRED2 0x1A44 228 229 /* QDMA TX Forward CPU Pointer Register */ 230 #define MTK_QTX_CTX_PTR 0x1B00 231 232 /* QDMA TX Forward DMA Pointer Register */ 233 #define MTK_QTX_DTX_PTR 0x1B04 234 235 /* QDMA TX Release CPU Pointer Register */ 236 #define MTK_QTX_CRX_PTR 0x1B10 237 238 /* QDMA TX Release DMA Pointer Register */ 239 #define MTK_QTX_DRX_PTR 0x1B14 240 241 /* QDMA FQ Head Pointer Register */ 242 #define MTK_QDMA_FQ_HEAD 0x1B20 243 244 /* QDMA FQ Head Pointer Register */ 245 #define MTK_QDMA_FQ_TAIL 0x1B24 246 247 /* QDMA FQ Free Page Counter Register */ 248 #define MTK_QDMA_FQ_CNT 0x1B28 249 250 /* QDMA FQ Free Page Buffer Length Register */ 251 #define MTK_QDMA_FQ_BLEN 0x1B2C 252 253 /* GMA1 Received Good Byte Count Register */ 254 #define MTK_GDM1_TX_GBCNT 0x2400 255 #define MTK_STAT_OFFSET 0x40 256 257 /* QDMA descriptor txd4 */ 258 #define TX_DMA_CHKSUM (0x7 << 29) 259 #define TX_DMA_TSO BIT(28) 260 #define TX_DMA_FPORT_SHIFT 25 261 #define TX_DMA_FPORT_MASK 0x7 262 #define TX_DMA_INS_VLAN BIT(16) 263 264 /* QDMA descriptor txd3 */ 265 #define TX_DMA_OWNER_CPU BIT(31) 266 #define TX_DMA_LS0 BIT(30) 267 #define TX_DMA_PLEN0(_x) (((_x) & MTK_TX_DMA_BUF_LEN) << 16) 268 #define TX_DMA_SWC BIT(14) 269 #define TX_DMA_SDL(_x) (((_x) & 0x3fff) << 16) 270 271 /* QDMA descriptor rxd2 */ 272 #define RX_DMA_DONE BIT(31) 273 #define RX_DMA_PLEN0(_x) (((_x) & 0x3fff) << 16) 274 #define RX_DMA_GET_PLEN0(_x) (((_x) >> 16) & 0x3fff) 275 276 /* QDMA descriptor rxd3 */ 277 #define RX_DMA_VID(_x) ((_x) & 0xfff) 278 279 /* QDMA descriptor rxd4 */ 280 #define RX_DMA_L4_VALID BIT(24) 281 #define RX_DMA_FPORT_SHIFT 19 282 #define RX_DMA_FPORT_MASK 0x7 283 284 /* PHY Indirect Access Control registers */ 285 #define MTK_PHY_IAC 0x10004 286 #define PHY_IAC_ACCESS BIT(31) 287 #define PHY_IAC_READ BIT(19) 288 #define PHY_IAC_WRITE BIT(18) 289 #define PHY_IAC_START BIT(16) 290 #define PHY_IAC_ADDR_SHIFT 20 291 #define PHY_IAC_REG_SHIFT 25 292 #define PHY_IAC_TIMEOUT HZ 293 294 /* Mac control registers */ 295 #define MTK_MAC_MCR(x) (0x10100 + (x * 0x100)) 296 #define MAC_MCR_MAX_RX_1536 BIT(24) 297 #define MAC_MCR_IPG_CFG (BIT(18) | BIT(16)) 298 #define MAC_MCR_FORCE_MODE BIT(15) 299 #define MAC_MCR_TX_EN BIT(14) 300 #define MAC_MCR_RX_EN BIT(13) 301 #define MAC_MCR_BACKOFF_EN BIT(9) 302 #define MAC_MCR_BACKPR_EN BIT(8) 303 #define MAC_MCR_FORCE_RX_FC BIT(5) 304 #define MAC_MCR_FORCE_TX_FC BIT(4) 305 #define MAC_MCR_SPEED_1000 BIT(3) 306 #define MAC_MCR_SPEED_100 BIT(2) 307 #define MAC_MCR_FORCE_DPX BIT(1) 308 #define MAC_MCR_FORCE_LINK BIT(0) 309 #define MAC_MCR_FIXED_LINK (MAC_MCR_MAX_RX_1536 | MAC_MCR_IPG_CFG | \ 310 MAC_MCR_FORCE_MODE | MAC_MCR_TX_EN | \ 311 MAC_MCR_RX_EN | MAC_MCR_BACKOFF_EN | \ 312 MAC_MCR_BACKPR_EN | MAC_MCR_FORCE_RX_FC | \ 313 MAC_MCR_FORCE_TX_FC | MAC_MCR_SPEED_1000 | \ 314 MAC_MCR_FORCE_DPX | MAC_MCR_FORCE_LINK) 315 316 /* TRGMII RXC control register */ 317 #define TRGMII_RCK_CTRL 0x10300 318 #define DQSI0(x) ((x << 0) & GENMASK(6, 0)) 319 #define DQSI1(x) ((x << 8) & GENMASK(14, 8)) 320 #define RXCTL_DMWTLAT(x) ((x << 16) & GENMASK(18, 16)) 321 #define RXC_DQSISEL BIT(30) 322 #define RCK_CTRL_RGMII_1000 (RXC_DQSISEL | RXCTL_DMWTLAT(2) | DQSI1(16)) 323 #define RCK_CTRL_RGMII_10_100 RXCTL_DMWTLAT(2) 324 325 /* TRGMII RXC control register */ 326 #define TRGMII_TCK_CTRL 0x10340 327 #define TXCTL_DMWTLAT(x) ((x << 16) & GENMASK(18, 16)) 328 #define TXC_INV BIT(30) 329 #define TCK_CTRL_RGMII_1000 TXCTL_DMWTLAT(2) 330 #define TCK_CTRL_RGMII_10_100 (TXC_INV | TXCTL_DMWTLAT(2)) 331 332 /* TRGMII Interface mode register */ 333 #define INTF_MODE 0x10390 334 #define TRGMII_INTF_DIS BIT(0) 335 #define TRGMII_MODE BIT(1) 336 #define TRGMII_CENTRAL_ALIGNED BIT(2) 337 #define INTF_MODE_RGMII_1000 (TRGMII_MODE | TRGMII_CENTRAL_ALIGNED) 338 #define INTF_MODE_RGMII_10_100 0 339 340 /* GPIO port control registers for GMAC 2*/ 341 #define GPIO_OD33_CTRL8 0x4c0 342 #define GPIO_BIAS_CTRL 0xed0 343 #define GPIO_DRV_SEL10 0xf00 344 345 /* ethernet subsystem chip id register */ 346 #define ETHSYS_CHIPID0_3 0x0 347 #define ETHSYS_CHIPID4_7 0x4 348 #define MT7623_ETH 7623 349 350 /* ethernet subsystem config register */ 351 #define ETHSYS_SYSCFG0 0x14 352 #define SYSCFG0_GE_MASK 0x3 353 #define SYSCFG0_GE_MODE(x, y) (x << (12 + (y * 2))) 354 355 /* ethernet subsystem clock register */ 356 #define ETHSYS_CLKCFG0 0x2c 357 #define ETHSYS_TRGMII_CLK_SEL362_5 BIT(11) 358 359 /* ethernet reset control register */ 360 #define ETHSYS_RSTCTRL 0x34 361 #define RSTCTRL_FE BIT(6) 362 #define RSTCTRL_PPE BIT(31) 363 364 struct mtk_rx_dma { 365 unsigned int rxd1; 366 unsigned int rxd2; 367 unsigned int rxd3; 368 unsigned int rxd4; 369 } __packed __aligned(4); 370 371 struct mtk_tx_dma { 372 unsigned int txd1; 373 unsigned int txd2; 374 unsigned int txd3; 375 unsigned int txd4; 376 } __packed __aligned(4); 377 378 struct mtk_eth; 379 struct mtk_mac; 380 381 /* struct mtk_hw_stats - the structure that holds the traffic statistics. 382 * @stats_lock: make sure that stats operations are atomic 383 * @reg_offset: the status register offset of the SoC 384 * @syncp: the refcount 385 * 386 * All of the supported SoCs have hardware counters for traffic statistics. 387 * Whenever the status IRQ triggers we can read the latest stats from these 388 * counters and store them in this struct. 389 */ 390 struct mtk_hw_stats { 391 u64 tx_bytes; 392 u64 tx_packets; 393 u64 tx_skip; 394 u64 tx_collisions; 395 u64 rx_bytes; 396 u64 rx_packets; 397 u64 rx_overflow; 398 u64 rx_fcs_errors; 399 u64 rx_short_errors; 400 u64 rx_long_errors; 401 u64 rx_checksum_errors; 402 u64 rx_flow_control_packets; 403 404 spinlock_t stats_lock; 405 u32 reg_offset; 406 struct u64_stats_sync syncp; 407 }; 408 409 /* PDMA descriptor can point at 1-2 segments. This enum allows us to track how 410 * memory was allocated so that it can be freed properly 411 */ 412 enum mtk_tx_flags { 413 MTK_TX_FLAGS_SINGLE0 = 0x01, 414 MTK_TX_FLAGS_PAGE0 = 0x02, 415 }; 416 417 /* This enum allows us to identify how the clock is defined on the array of the 418 * clock in the order 419 */ 420 enum mtk_clks_map { 421 MTK_CLK_ETHIF, 422 MTK_CLK_ESW, 423 MTK_CLK_GP1, 424 MTK_CLK_GP2, 425 MTK_CLK_TRGPLL, 426 MTK_CLK_MAX 427 }; 428 429 enum mtk_dev_state { 430 MTK_HW_INIT, 431 MTK_RESETTING 432 }; 433 434 /* struct mtk_tx_buf - This struct holds the pointers to the memory pointed at 435 * by the TX descriptor s 436 * @skb: The SKB pointer of the packet being sent 437 * @dma_addr0: The base addr of the first segment 438 * @dma_len0: The length of the first segment 439 * @dma_addr1: The base addr of the second segment 440 * @dma_len1: The length of the second segment 441 */ 442 struct mtk_tx_buf { 443 struct sk_buff *skb; 444 u32 flags; 445 DEFINE_DMA_UNMAP_ADDR(dma_addr0); 446 DEFINE_DMA_UNMAP_LEN(dma_len0); 447 DEFINE_DMA_UNMAP_ADDR(dma_addr1); 448 DEFINE_DMA_UNMAP_LEN(dma_len1); 449 }; 450 451 /* struct mtk_tx_ring - This struct holds info describing a TX ring 452 * @dma: The descriptor ring 453 * @buf: The memory pointed at by the ring 454 * @phys: The physical addr of tx_buf 455 * @next_free: Pointer to the next free descriptor 456 * @last_free: Pointer to the last free descriptor 457 * @thresh: The threshold of minimum amount of free descriptors 458 * @free_count: QDMA uses a linked list. Track how many free descriptors 459 * are present 460 */ 461 struct mtk_tx_ring { 462 struct mtk_tx_dma *dma; 463 struct mtk_tx_buf *buf; 464 dma_addr_t phys; 465 struct mtk_tx_dma *next_free; 466 struct mtk_tx_dma *last_free; 467 u16 thresh; 468 atomic_t free_count; 469 }; 470 471 /* PDMA rx ring mode */ 472 enum mtk_rx_flags { 473 MTK_RX_FLAGS_NORMAL = 0, 474 MTK_RX_FLAGS_HWLRO, 475 }; 476 477 /* struct mtk_rx_ring - This struct holds info describing a RX ring 478 * @dma: The descriptor ring 479 * @data: The memory pointed at by the ring 480 * @phys: The physical addr of rx_buf 481 * @frag_size: How big can each fragment be 482 * @buf_size: The size of each packet buffer 483 * @calc_idx: The current head of ring 484 */ 485 struct mtk_rx_ring { 486 struct mtk_rx_dma *dma; 487 u8 **data; 488 dma_addr_t phys; 489 u16 frag_size; 490 u16 buf_size; 491 u16 dma_size; 492 bool calc_idx_update; 493 u16 calc_idx; 494 u32 crx_idx_reg; 495 }; 496 497 /* currently no SoC has more than 2 macs */ 498 #define MTK_MAX_DEVS 2 499 500 /* struct mtk_eth - This is the main datasructure for holding the state 501 * of the driver 502 * @dev: The device pointer 503 * @base: The mapped register i/o base 504 * @page_lock: Make sure that register operations are atomic 505 * @dummy_dev: we run 2 netdevs on 1 physical DMA ring and need a 506 * dummy for NAPI to work 507 * @netdev: The netdev instances 508 * @mac: Each netdev is linked to a physical MAC 509 * @irq: The IRQ that we are using 510 * @msg_enable: Ethtool msg level 511 * @ethsys: The register map pointing at the range used to setup 512 * MII modes 513 * @pctl: The register map pointing at the range used to setup 514 * GMAC port drive/slew values 515 * @dma_refcnt: track how many netdevs are using the DMA engine 516 * @tx_ring: Pointer to the memore holding info about the TX ring 517 * @rx_ring: Pointer to the memore holding info about the RX ring 518 * @tx_napi: The TX NAPI struct 519 * @rx_napi: The RX NAPI struct 520 * @scratch_ring: Newer SoCs need memory for a second HW managed TX ring 521 * @phy_scratch_ring: physical address of scratch_ring 522 * @scratch_head: The scratch memory that scratch_ring points to. 523 * @clks: clock array for all clocks required 524 * @mii_bus: If there is a bus we need to create an instance for it 525 * @pending_work: The workqueue used to reset the dma ring 526 * @state Initialization and runtime state of the device. 527 */ 528 529 struct mtk_eth { 530 struct device *dev; 531 void __iomem *base; 532 spinlock_t page_lock; 533 spinlock_t irq_lock; 534 struct net_device dummy_dev; 535 struct net_device *netdev[MTK_MAX_DEVS]; 536 struct mtk_mac *mac[MTK_MAX_DEVS]; 537 int irq[3]; 538 u32 msg_enable; 539 unsigned long sysclk; 540 struct regmap *ethsys; 541 struct regmap *pctl; 542 u32 chip_id; 543 bool hwlro; 544 atomic_t dma_refcnt; 545 struct mtk_tx_ring tx_ring; 546 struct mtk_rx_ring rx_ring[MTK_MAX_RX_RING_NUM]; 547 struct napi_struct tx_napi; 548 struct napi_struct rx_napi; 549 struct mtk_tx_dma *scratch_ring; 550 dma_addr_t phy_scratch_ring; 551 void *scratch_head; 552 struct clk *clks[MTK_CLK_MAX]; 553 554 struct mii_bus *mii_bus; 555 struct work_struct pending_work; 556 unsigned long state; 557 }; 558 559 /* struct mtk_mac - the structure that holds the info about the MACs of the 560 * SoC 561 * @id: The number of the MAC 562 * @ge_mode: Interface mode kept for setup restoring 563 * @of_node: Our devicetree node 564 * @hw: Backpointer to our main datastruture 565 * @hw_stats: Packet statistics counter 566 * @trgmii Indicate if the MAC uses TRGMII connected to internal 567 switch 568 */ 569 struct mtk_mac { 570 int id; 571 int ge_mode; 572 struct device_node *of_node; 573 struct mtk_eth *hw; 574 struct mtk_hw_stats *hw_stats; 575 __be32 hwlro_ip[MTK_MAX_LRO_IP_CNT]; 576 int hwlro_ip_cnt; 577 bool trgmii; 578 }; 579 580 /* the struct describing the SoC. these are declared in the soc_xyz.c files */ 581 extern const struct of_device_id of_mtk_match[]; 582 583 /* read the hardware status register */ 584 void mtk_stats_update_mac(struct mtk_mac *mac); 585 586 void mtk_w32(struct mtk_eth *eth, u32 val, unsigned reg); 587 u32 mtk_r32(struct mtk_eth *eth, unsigned reg); 588 589 #endif /* MTK_ETH_H */ 590