1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* Altera Triple-Speed Ethernet MAC driver 3 * Copyright (C) 2008-2014 Altera Corporation. All rights reserved 4 * 5 * Contributors: 6 * Dalon Westergreen 7 * Thomas Chou 8 * Ian Abbott 9 * Yuriy Kozlov 10 * Tobias Klauser 11 * Andriy Smolskyy 12 * Roman Bulgakov 13 * Dmytro Mytarchuk 14 * Matthew Gerlach 15 * 16 * Original driver contributed by SLS. 17 * Major updates contributed by GlobalLogic 18 */ 19 20 #ifndef __ALTERA_TSE_H__ 21 #define __ALTERA_TSE_H__ 22 23 #define ALTERA_TSE_RESOURCE_NAME "altera_tse" 24 25 #include <linux/bitops.h> 26 #include <linux/if_vlan.h> 27 #include <linux/list.h> 28 #include <linux/netdevice.h> 29 #include <linux/phy.h> 30 #include <linux/phylink.h> 31 32 #define ALTERA_TSE_SW_RESET_WATCHDOG_CNTR 10000 33 #define ALTERA_TSE_MAC_FIFO_WIDTH 4 /* TX/RX FIFO width in 34 * bytes 35 */ 36 /* Rx FIFO default settings */ 37 #define ALTERA_TSE_RX_SECTION_EMPTY 16 38 #define ALTERA_TSE_RX_SECTION_FULL 0 39 #define ALTERA_TSE_RX_ALMOST_EMPTY 8 40 #define ALTERA_TSE_RX_ALMOST_FULL 8 41 42 /* Tx FIFO default settings */ 43 #define ALTERA_TSE_TX_SECTION_EMPTY 16 44 #define ALTERA_TSE_TX_SECTION_FULL 0 45 #define ALTERA_TSE_TX_ALMOST_EMPTY 8 46 #define ALTERA_TSE_TX_ALMOST_FULL 3 47 48 /* MAC function configuration default settings */ 49 #define ALTERA_TSE_TX_IPG_LENGTH 12 50 51 #define ALTERA_TSE_PAUSE_QUANTA 0xffff 52 53 #define GET_BIT_VALUE(v, bit) (((v) >> (bit)) & 0x1) 54 55 /* MAC Command_Config Register Bit Definitions 56 */ 57 #define MAC_CMDCFG_TX_ENA BIT(0) 58 #define MAC_CMDCFG_RX_ENA BIT(1) 59 #define MAC_CMDCFG_XON_GEN BIT(2) 60 #define MAC_CMDCFG_ETH_SPEED BIT(3) 61 #define MAC_CMDCFG_PROMIS_EN BIT(4) 62 #define MAC_CMDCFG_PAD_EN BIT(5) 63 #define MAC_CMDCFG_CRC_FWD BIT(6) 64 #define MAC_CMDCFG_PAUSE_FWD BIT(7) 65 #define MAC_CMDCFG_PAUSE_IGNORE BIT(8) 66 #define MAC_CMDCFG_TX_ADDR_INS BIT(9) 67 #define MAC_CMDCFG_HD_ENA BIT(10) 68 #define MAC_CMDCFG_EXCESS_COL BIT(11) 69 #define MAC_CMDCFG_LATE_COL BIT(12) 70 #define MAC_CMDCFG_SW_RESET BIT(13) 71 #define MAC_CMDCFG_MHASH_SEL BIT(14) 72 #define MAC_CMDCFG_LOOP_ENA BIT(15) 73 #define MAC_CMDCFG_TX_ADDR_SEL(v) (((v) & 0x7) << 16) 74 #define MAC_CMDCFG_MAGIC_ENA BIT(19) 75 #define MAC_CMDCFG_SLEEP BIT(20) 76 #define MAC_CMDCFG_WAKEUP BIT(21) 77 #define MAC_CMDCFG_XOFF_GEN BIT(22) 78 #define MAC_CMDCFG_CNTL_FRM_ENA BIT(23) 79 #define MAC_CMDCFG_NO_LGTH_CHECK BIT(24) 80 #define MAC_CMDCFG_ENA_10 BIT(25) 81 #define MAC_CMDCFG_RX_ERR_DISC BIT(26) 82 #define MAC_CMDCFG_DISABLE_READ_TIMEOUT BIT(27) 83 #define MAC_CMDCFG_CNT_RESET BIT(31) 84 85 #define MAC_CMDCFG_TX_ENA_GET(v) GET_BIT_VALUE(v, 0) 86 #define MAC_CMDCFG_RX_ENA_GET(v) GET_BIT_VALUE(v, 1) 87 #define MAC_CMDCFG_XON_GEN_GET(v) GET_BIT_VALUE(v, 2) 88 #define MAC_CMDCFG_ETH_SPEED_GET(v) GET_BIT_VALUE(v, 3) 89 #define MAC_CMDCFG_PROMIS_EN_GET(v) GET_BIT_VALUE(v, 4) 90 #define MAC_CMDCFG_PAD_EN_GET(v) GET_BIT_VALUE(v, 5) 91 #define MAC_CMDCFG_CRC_FWD_GET(v) GET_BIT_VALUE(v, 6) 92 #define MAC_CMDCFG_PAUSE_FWD_GET(v) GET_BIT_VALUE(v, 7) 93 #define MAC_CMDCFG_PAUSE_IGNORE_GET(v) GET_BIT_VALUE(v, 8) 94 #define MAC_CMDCFG_TX_ADDR_INS_GET(v) GET_BIT_VALUE(v, 9) 95 #define MAC_CMDCFG_HD_ENA_GET(v) GET_BIT_VALUE(v, 10) 96 #define MAC_CMDCFG_EXCESS_COL_GET(v) GET_BIT_VALUE(v, 11) 97 #define MAC_CMDCFG_LATE_COL_GET(v) GET_BIT_VALUE(v, 12) 98 #define MAC_CMDCFG_SW_RESET_GET(v) GET_BIT_VALUE(v, 13) 99 #define MAC_CMDCFG_MHASH_SEL_GET(v) GET_BIT_VALUE(v, 14) 100 #define MAC_CMDCFG_LOOP_ENA_GET(v) GET_BIT_VALUE(v, 15) 101 #define MAC_CMDCFG_TX_ADDR_SEL_GET(v) (((v) >> 16) & 0x7) 102 #define MAC_CMDCFG_MAGIC_ENA_GET(v) GET_BIT_VALUE(v, 19) 103 #define MAC_CMDCFG_SLEEP_GET(v) GET_BIT_VALUE(v, 20) 104 #define MAC_CMDCFG_WAKEUP_GET(v) GET_BIT_VALUE(v, 21) 105 #define MAC_CMDCFG_XOFF_GEN_GET(v) GET_BIT_VALUE(v, 22) 106 #define MAC_CMDCFG_CNTL_FRM_ENA_GET(v) GET_BIT_VALUE(v, 23) 107 #define MAC_CMDCFG_NO_LGTH_CHECK_GET(v) GET_BIT_VALUE(v, 24) 108 #define MAC_CMDCFG_ENA_10_GET(v) GET_BIT_VALUE(v, 25) 109 #define MAC_CMDCFG_RX_ERR_DISC_GET(v) GET_BIT_VALUE(v, 26) 110 #define MAC_CMDCFG_DISABLE_READ_TIMEOUT_GET(v) GET_BIT_VALUE(v, 27) 111 #define MAC_CMDCFG_CNT_RESET_GET(v) GET_BIT_VALUE(v, 31) 112 113 /* MDIO registers within MAC register Space 114 */ 115 struct altera_tse_mdio { 116 u32 control; /* PHY device operation control register */ 117 u32 status; /* PHY device operation status register */ 118 u32 phy_id1; /* Bits 31:16 of PHY identifier */ 119 u32 phy_id2; /* Bits 15:0 of PHY identifier */ 120 u32 auto_negotiation_advertisement; /* Auto-negotiation 121 * advertisement 122 * register 123 */ 124 u32 remote_partner_base_page_ability; 125 126 u32 reg6; 127 u32 reg7; 128 u32 reg8; 129 u32 reg9; 130 u32 rega; 131 u32 regb; 132 u32 regc; 133 u32 regd; 134 u32 rege; 135 u32 regf; 136 u32 reg10; 137 u32 reg11; 138 u32 reg12; 139 u32 reg13; 140 u32 reg14; 141 u32 reg15; 142 u32 reg16; 143 u32 reg17; 144 u32 reg18; 145 u32 reg19; 146 u32 reg1a; 147 u32 reg1b; 148 u32 reg1c; 149 u32 reg1d; 150 u32 reg1e; 151 u32 reg1f; 152 }; 153 154 /* MAC register Space. Note that some of these registers may or may not be 155 * present depending upon options chosen by the user when the core was 156 * configured and built. Please consult the Altera Triple Speed Ethernet User 157 * Guide for details. 158 */ 159 struct altera_tse_mac { 160 /* Bits 15:0: MegaCore function revision (0x0800). Bit 31:16: Customer 161 * specific revision 162 */ 163 u32 megacore_revision; 164 /* Provides a memory location for user applications to test the device 165 * memory operation. 166 */ 167 u32 scratch_pad; 168 /* The host processor uses this register to control and configure the 169 * MAC block 170 */ 171 u32 command_config; 172 /* 32-bit primary MAC address word 0 bits 0 to 31 of the primary 173 * MAC address 174 */ 175 u32 mac_addr_0; 176 /* 32-bit primary MAC address word 1 bits 32 to 47 of the primary 177 * MAC address 178 */ 179 u32 mac_addr_1; 180 /* 14-bit maximum frame length. The MAC receive logic */ 181 u32 frm_length; 182 /* The pause quanta is used in each pause frame sent to a remote 183 * Ethernet device, in increments of 512 Ethernet bit times 184 */ 185 u32 pause_quanta; 186 /* 12-bit receive FIFO section-empty threshold */ 187 u32 rx_section_empty; 188 /* 12-bit receive FIFO section-full threshold */ 189 u32 rx_section_full; 190 /* 12-bit transmit FIFO section-empty threshold */ 191 u32 tx_section_empty; 192 /* 12-bit transmit FIFO section-full threshold */ 193 u32 tx_section_full; 194 /* 12-bit receive FIFO almost-empty threshold */ 195 u32 rx_almost_empty; 196 /* 12-bit receive FIFO almost-full threshold */ 197 u32 rx_almost_full; 198 /* 12-bit transmit FIFO almost-empty threshold */ 199 u32 tx_almost_empty; 200 /* 12-bit transmit FIFO almost-full threshold */ 201 u32 tx_almost_full; 202 /* MDIO address of PHY Device 0. Bits 0 to 4 hold a 5-bit PHY address */ 203 u32 mdio_phy0_addr; 204 /* MDIO address of PHY Device 1. Bits 0 to 4 hold a 5-bit PHY address */ 205 u32 mdio_phy1_addr; 206 207 /* Bit[15:0]—16-bit holdoff quanta */ 208 u32 holdoff_quant; 209 210 /* only if 100/1000 BaseX PCS, reserved otherwise */ 211 u32 reserved1[5]; 212 213 /* Minimum IPG between consecutive transmit frame in terms of bytes */ 214 u32 tx_ipg_length; 215 216 /* IEEE 802.3 oEntity Managed Object Support */ 217 218 /* The MAC addresses */ 219 u32 mac_id_1; 220 u32 mac_id_2; 221 222 /* Number of frames transmitted without error including pause frames */ 223 u32 frames_transmitted_ok; 224 /* Number of frames received without error including pause frames */ 225 u32 frames_received_ok; 226 /* Number of frames received with a CRC error */ 227 u32 frames_check_sequence_errors; 228 /* Frame received with an alignment error */ 229 u32 alignment_errors; 230 /* Sum of payload and padding octets of frames transmitted without 231 * error 232 */ 233 u32 octets_transmitted_ok; 234 /* Sum of payload and padding octets of frames received without error */ 235 u32 octets_received_ok; 236 237 /* IEEE 802.3 oPausedEntity Managed Object Support */ 238 239 /* Number of transmitted pause frames */ 240 u32 tx_pause_mac_ctrl_frames; 241 /* Number of Received pause frames */ 242 u32 rx_pause_mac_ctrl_frames; 243 244 /* IETF MIB (MIB-II) Object Support */ 245 246 /* Number of frames received with error */ 247 u32 if_in_errors; 248 /* Number of frames transmitted with error */ 249 u32 if_out_errors; 250 /* Number of valid received unicast frames */ 251 u32 if_in_ucast_pkts; 252 /* Number of valid received multicasts frames (without pause) */ 253 u32 if_in_multicast_pkts; 254 /* Number of valid received broadcast frames */ 255 u32 if_in_broadcast_pkts; 256 u32 if_out_discards; 257 /* The number of valid unicast frames transmitted */ 258 u32 if_out_ucast_pkts; 259 /* The number of valid multicast frames transmitted, 260 * excluding pause frames 261 */ 262 u32 if_out_multicast_pkts; 263 u32 if_out_broadcast_pkts; 264 265 /* IETF RMON MIB Object Support */ 266 267 /* Counts the number of dropped packets due to internal errors 268 * of the MAC client. 269 */ 270 u32 ether_stats_drop_events; 271 /* Total number of bytes received. Good and bad frames. */ 272 u32 ether_stats_octets; 273 /* Total number of packets received. Counts good and bad packets. */ 274 u32 ether_stats_pkts; 275 /* Number of packets received with less than 64 bytes. */ 276 u32 ether_stats_undersize_pkts; 277 /* The number of frames received that are longer than the 278 * value configured in the frm_length register 279 */ 280 u32 ether_stats_oversize_pkts; 281 /* Number of received packet with 64 bytes */ 282 u32 ether_stats_pkts_64_octets; 283 /* Frames (good and bad) with 65 to 127 bytes */ 284 u32 ether_stats_pkts_65to127_octets; 285 /* Frames (good and bad) with 128 to 255 bytes */ 286 u32 ether_stats_pkts_128to255_octets; 287 /* Frames (good and bad) with 256 to 511 bytes */ 288 u32 ether_stats_pkts_256to511_octets; 289 /* Frames (good and bad) with 512 to 1023 bytes */ 290 u32 ether_stats_pkts_512to1023_octets; 291 /* Frames (good and bad) with 1024 to 1518 bytes */ 292 u32 ether_stats_pkts_1024to1518_octets; 293 294 /* Any frame length from 1519 to the maximum length configured in the 295 * frm_length register, if it is greater than 1518 296 */ 297 u32 ether_stats_pkts_1519tox_octets; 298 /* Too long frames with CRC error */ 299 u32 ether_stats_jabbers; 300 /* Too short frames with CRC error */ 301 u32 ether_stats_fragments; 302 303 u32 reserved2; 304 305 /* FIFO control register */ 306 u32 tx_cmd_stat; 307 u32 rx_cmd_stat; 308 309 /* Extended Statistics Counters */ 310 u32 msb_octets_transmitted_ok; 311 u32 msb_octets_received_ok; 312 u32 msb_ether_stats_octets; 313 314 u32 reserved3; 315 316 /* Multicast address resolution table, mapped in the controller address 317 * space 318 */ 319 u32 hash_table[64]; 320 321 /* Registers 0 to 31 within PHY device 0/1 connected to the MDIO PHY 322 * management interface 323 */ 324 struct altera_tse_mdio mdio_phy0; 325 struct altera_tse_mdio mdio_phy1; 326 327 /* 4 Supplemental MAC Addresses */ 328 u32 supp_mac_addr_0_0; 329 u32 supp_mac_addr_0_1; 330 u32 supp_mac_addr_1_0; 331 u32 supp_mac_addr_1_1; 332 u32 supp_mac_addr_2_0; 333 u32 supp_mac_addr_2_1; 334 u32 supp_mac_addr_3_0; 335 u32 supp_mac_addr_3_1; 336 337 u32 reserved4[8]; 338 339 /* IEEE 1588v2 Feature */ 340 u32 tx_period; 341 u32 tx_adjust_fns; 342 u32 tx_adjust_ns; 343 u32 rx_period; 344 u32 rx_adjust_fns; 345 u32 rx_adjust_ns; 346 347 u32 reserved5[42]; 348 }; 349 350 #define tse_csroffs(a) (offsetof(struct altera_tse_mac, a)) 351 352 /* Transmit and Receive Command Registers Bit Definitions 353 */ 354 #define ALTERA_TSE_TX_CMD_STAT_OMIT_CRC BIT(17) 355 #define ALTERA_TSE_TX_CMD_STAT_TX_SHIFT16 BIT(18) 356 #define ALTERA_TSE_RX_CMD_STAT_RX_SHIFT16 BIT(25) 357 358 /* Wrapper around a pointer to a socket buffer, 359 * so a DMA handle can be stored along with the buffer 360 */ 361 struct tse_buffer { 362 struct list_head lh; 363 struct sk_buff *skb; 364 dma_addr_t dma_addr; 365 u32 len; 366 int mapped_as_page; 367 }; 368 369 struct altera_tse_private; 370 371 #define ALTERA_DTYPE_SGDMA 1 372 #define ALTERA_DTYPE_MSGDMA 2 373 374 /* standard DMA interface for SGDMA and MSGDMA */ 375 struct altera_dmaops { 376 int altera_dtype; 377 int dmamask; 378 void (*reset_dma)(struct altera_tse_private *); 379 void (*enable_txirq)(struct altera_tse_private *); 380 void (*enable_rxirq)(struct altera_tse_private *); 381 void (*disable_txirq)(struct altera_tse_private *); 382 void (*disable_rxirq)(struct altera_tse_private *); 383 void (*clear_txirq)(struct altera_tse_private *); 384 void (*clear_rxirq)(struct altera_tse_private *); 385 int (*tx_buffer)(struct altera_tse_private *, struct tse_buffer *); 386 u32 (*tx_completions)(struct altera_tse_private *); 387 void (*add_rx_desc)(struct altera_tse_private *, struct tse_buffer *); 388 u32 (*get_rx_status)(struct altera_tse_private *); 389 int (*init_dma)(struct altera_tse_private *); 390 void (*uninit_dma)(struct altera_tse_private *); 391 void (*start_rxdma)(struct altera_tse_private *); 392 }; 393 394 /* This structure is private to each device. 395 */ 396 struct altera_tse_private { 397 struct net_device *dev; 398 struct device *device; 399 struct napi_struct napi; 400 401 /* MAC address space */ 402 struct altera_tse_mac __iomem *mac_dev; 403 404 /* TSE Revision */ 405 u32 revision; 406 407 /* mSGDMA Rx Dispatcher address space */ 408 void __iomem *rx_dma_csr; 409 void __iomem *rx_dma_desc; 410 void __iomem *rx_dma_resp; 411 412 /* mSGDMA Tx Dispatcher address space */ 413 void __iomem *tx_dma_csr; 414 void __iomem *tx_dma_desc; 415 416 /* SGMII PCS address space */ 417 void __iomem *pcs_base; 418 419 /* Rx buffers queue */ 420 struct tse_buffer *rx_ring; 421 u32 rx_cons; 422 u32 rx_prod; 423 u32 rx_ring_size; 424 u32 rx_dma_buf_sz; 425 426 /* Tx ring buffer */ 427 struct tse_buffer *tx_ring; 428 u32 tx_prod; 429 u32 tx_cons; 430 u32 tx_ring_size; 431 432 /* Interrupts */ 433 u32 tx_irq; 434 u32 rx_irq; 435 436 /* RX/TX MAC FIFO configs */ 437 u32 tx_fifo_depth; 438 u32 rx_fifo_depth; 439 440 /* Hash filter settings */ 441 u32 hash_filter; 442 u32 added_unicast; 443 444 /* Descriptor memory info for managing SGDMA */ 445 u32 txdescmem; 446 u32 rxdescmem; 447 dma_addr_t rxdescmem_busaddr; 448 dma_addr_t txdescmem_busaddr; 449 u32 txctrlreg; 450 u32 rxctrlreg; 451 dma_addr_t rxdescphys; 452 dma_addr_t txdescphys; 453 454 struct list_head txlisthd; 455 struct list_head rxlisthd; 456 457 /* MAC command_config register protection */ 458 spinlock_t mac_cfg_lock; 459 /* Tx path protection */ 460 spinlock_t tx_lock; 461 /* Rx DMA & interrupt control protection */ 462 spinlock_t rxdma_irq_lock; 463 464 /* PHY */ 465 int phy_addr; /* PHY's MDIO address, -1 for autodetection */ 466 phy_interface_t phy_iface; 467 struct mii_bus *mdio; 468 int oldspeed; 469 int oldduplex; 470 int oldlink; 471 472 /* ethtool msglvl option */ 473 u32 msg_enable; 474 475 const struct altera_dmaops *dmaops; 476 477 struct phylink *phylink; 478 struct phylink_config phylink_config; 479 struct phylink_pcs *pcs; 480 }; 481 482 /* Function prototypes 483 */ 484 void altera_tse_set_ethtool_ops(struct net_device *); 485 486 static inline 487 u32 csrrd32(void __iomem *mac, size_t offs) 488 { 489 void __iomem *paddr = (void __iomem *)((uintptr_t)mac + offs); 490 return readl(paddr); 491 } 492 493 static inline 494 u16 csrrd16(void __iomem *mac, size_t offs) 495 { 496 void __iomem *paddr = (void __iomem *)((uintptr_t)mac + offs); 497 return readw(paddr); 498 } 499 500 static inline 501 u8 csrrd8(void __iomem *mac, size_t offs) 502 { 503 void __iomem *paddr = (void __iomem *)((uintptr_t)mac + offs); 504 return readb(paddr); 505 } 506 507 static inline 508 void csrwr32(u32 val, void __iomem *mac, size_t offs) 509 { 510 void __iomem *paddr = (void __iomem *)((uintptr_t)mac + offs); 511 512 writel(val, paddr); 513 } 514 515 static inline 516 void csrwr16(u16 val, void __iomem *mac, size_t offs) 517 { 518 void __iomem *paddr = (void __iomem *)((uintptr_t)mac + offs); 519 520 writew(val, paddr); 521 } 522 523 static inline 524 void csrwr8(u8 val, void __iomem *mac, size_t offs) 525 { 526 void __iomem *paddr = (void __iomem *)((uintptr_t)mac + offs); 527 528 writeb(val, paddr); 529 } 530 531 #endif /* __ALTERA_TSE_H__ */ 532