1/* SPDX-License-Identifier: GPL-2.0 */ 2/* 3 * Definitions for Xilinx Axi Ethernet device driver. 4 * 5 * Copyright (c) 2009 Secret Lab Technologies, Ltd. 6 * Copyright (c) 2010 - 2012 Xilinx, Inc. All rights reserved. 7 */ 8 9#ifndef XILINX_AXIENET_H 10#define XILINX_AXIENET_H 11 12#include <linux/netdevice.h> 13#include <linux/spinlock.h> 14#include <linux/interrupt.h> 15#include <linux/if_vlan.h> 16#include <linux/phylink.h> 17 18/* Packet size info */ 19#define XAE_HDR_SIZE 14 /* Size of Ethernet header */ 20#define XAE_TRL_SIZE 4 /* Size of Ethernet trailer (FCS) */ 21#define XAE_MTU 1500 /* Max MTU of an Ethernet frame */ 22#define XAE_JUMBO_MTU 9000 /* Max MTU of a jumbo Eth. frame */ 23 24#define XAE_MAX_FRAME_SIZE (XAE_MTU + XAE_HDR_SIZE + XAE_TRL_SIZE) 25#define XAE_MAX_VLAN_FRAME_SIZE (XAE_MTU + VLAN_ETH_HLEN + XAE_TRL_SIZE) 26#define XAE_MAX_JUMBO_FRAME_SIZE (XAE_JUMBO_MTU + XAE_HDR_SIZE + XAE_TRL_SIZE) 27 28/* Configuration options */ 29 30/* Accept all incoming packets. Default: disabled (cleared) */ 31#define XAE_OPTION_PROMISC (1 << 0) 32 33/* Jumbo frame support for Tx & Rx. Default: disabled (cleared) */ 34#define XAE_OPTION_JUMBO (1 << 1) 35 36/* VLAN Rx & Tx frame support. Default: disabled (cleared) */ 37#define XAE_OPTION_VLAN (1 << 2) 38 39/* Enable recognition of flow control frames on Rx. Default: enabled (set) */ 40#define XAE_OPTION_FLOW_CONTROL (1 << 4) 41 42/* Strip FCS and PAD from incoming frames. Note: PAD from VLAN frames is not 43 * stripped. Default: disabled (set) 44 */ 45#define XAE_OPTION_FCS_STRIP (1 << 5) 46 47/* Generate FCS field and add PAD automatically for outgoing frames. 48 * Default: enabled (set) 49 */ 50#define XAE_OPTION_FCS_INSERT (1 << 6) 51 52/* Enable Length/Type error checking for incoming frames. When this option is 53 * set, the MAC will filter frames that have a mismatched type/length field 54 * and if XAE_OPTION_REPORT_RXERR is set, the user is notified when these 55 * types of frames are encountered. When this option is cleared, the MAC will 56 * allow these types of frames to be received. Default: enabled (set) 57 */ 58#define XAE_OPTION_LENTYPE_ERR (1 << 7) 59 60/* Enable the transmitter. Default: enabled (set) */ 61#define XAE_OPTION_TXEN (1 << 11) 62 63/* Enable the receiver. Default: enabled (set) */ 64#define XAE_OPTION_RXEN (1 << 12) 65 66/* Default options set when device is initialized or reset */ 67#define XAE_OPTION_DEFAULTS \ 68 (XAE_OPTION_TXEN | \ 69 XAE_OPTION_FLOW_CONTROL | \ 70 XAE_OPTION_RXEN) 71 72/* Axi DMA Register definitions */ 73 74#define XAXIDMA_TX_CR_OFFSET 0x00000000 /* Channel control */ 75#define XAXIDMA_TX_SR_OFFSET 0x00000004 /* Status */ 76#define XAXIDMA_TX_CDESC_OFFSET 0x00000008 /* Current descriptor pointer */ 77#define XAXIDMA_TX_TDESC_OFFSET 0x00000010 /* Tail descriptor pointer */ 78 79#define XAXIDMA_RX_CR_OFFSET 0x00000030 /* Channel control */ 80#define XAXIDMA_RX_SR_OFFSET 0x00000034 /* Status */ 81#define XAXIDMA_RX_CDESC_OFFSET 0x00000038 /* Current descriptor pointer */ 82#define XAXIDMA_RX_TDESC_OFFSET 0x00000040 /* Tail descriptor pointer */ 83 84#define XAXIDMA_CR_RUNSTOP_MASK 0x00000001 /* Start/stop DMA channel */ 85#define XAXIDMA_CR_RESET_MASK 0x00000004 /* Reset DMA engine */ 86 87#define XAXIDMA_SR_HALT_MASK 0x00000001 /* Indicates DMA channel halted */ 88 89#define XAXIDMA_BD_NDESC_OFFSET 0x00 /* Next descriptor pointer */ 90#define XAXIDMA_BD_BUFA_OFFSET 0x08 /* Buffer address */ 91#define XAXIDMA_BD_CTRL_LEN_OFFSET 0x18 /* Control/buffer length */ 92#define XAXIDMA_BD_STS_OFFSET 0x1C /* Status */ 93#define XAXIDMA_BD_USR0_OFFSET 0x20 /* User IP specific word0 */ 94#define XAXIDMA_BD_USR1_OFFSET 0x24 /* User IP specific word1 */ 95#define XAXIDMA_BD_USR2_OFFSET 0x28 /* User IP specific word2 */ 96#define XAXIDMA_BD_USR3_OFFSET 0x2C /* User IP specific word3 */ 97#define XAXIDMA_BD_USR4_OFFSET 0x30 /* User IP specific word4 */ 98#define XAXIDMA_BD_ID_OFFSET 0x34 /* Sw ID */ 99#define XAXIDMA_BD_HAS_STSCNTRL_OFFSET 0x38 /* Whether has stscntrl strm */ 100#define XAXIDMA_BD_HAS_DRE_OFFSET 0x3C /* Whether has DRE */ 101 102#define XAXIDMA_BD_HAS_DRE_SHIFT 8 /* Whether has DRE shift */ 103#define XAXIDMA_BD_HAS_DRE_MASK 0xF00 /* Whether has DRE mask */ 104#define XAXIDMA_BD_WORDLEN_MASK 0xFF /* Whether has DRE mask */ 105 106#define XAXIDMA_BD_CTRL_LENGTH_MASK 0x007FFFFF /* Requested len */ 107#define XAXIDMA_BD_CTRL_TXSOF_MASK 0x08000000 /* First tx packet */ 108#define XAXIDMA_BD_CTRL_TXEOF_MASK 0x04000000 /* Last tx packet */ 109#define XAXIDMA_BD_CTRL_ALL_MASK 0x0C000000 /* All control bits */ 110 111#define XAXIDMA_DELAY_MASK 0xFF000000 /* Delay timeout counter */ 112#define XAXIDMA_COALESCE_MASK 0x00FF0000 /* Coalesce counter */ 113 114#define XAXIDMA_DELAY_SHIFT 24 115#define XAXIDMA_COALESCE_SHIFT 16 116 117#define XAXIDMA_IRQ_IOC_MASK 0x00001000 /* Completion intr */ 118#define XAXIDMA_IRQ_DELAY_MASK 0x00002000 /* Delay interrupt */ 119#define XAXIDMA_IRQ_ERROR_MASK 0x00004000 /* Error interrupt */ 120#define XAXIDMA_IRQ_ALL_MASK 0x00007000 /* All interrupts */ 121 122/* Default TX/RX Threshold and waitbound values for SGDMA mode */ 123#define XAXIDMA_DFT_TX_THRESHOLD 24 124#define XAXIDMA_DFT_TX_WAITBOUND 254 125#define XAXIDMA_DFT_RX_THRESHOLD 24 126#define XAXIDMA_DFT_RX_WAITBOUND 254 127 128#define XAXIDMA_BD_CTRL_TXSOF_MASK 0x08000000 /* First tx packet */ 129#define XAXIDMA_BD_CTRL_TXEOF_MASK 0x04000000 /* Last tx packet */ 130#define XAXIDMA_BD_CTRL_ALL_MASK 0x0C000000 /* All control bits */ 131 132#define XAXIDMA_BD_STS_ACTUAL_LEN_MASK 0x007FFFFF /* Actual len */ 133#define XAXIDMA_BD_STS_COMPLETE_MASK 0x80000000 /* Completed */ 134#define XAXIDMA_BD_STS_DEC_ERR_MASK 0x40000000 /* Decode error */ 135#define XAXIDMA_BD_STS_SLV_ERR_MASK 0x20000000 /* Slave error */ 136#define XAXIDMA_BD_STS_INT_ERR_MASK 0x10000000 /* Internal err */ 137#define XAXIDMA_BD_STS_ALL_ERR_MASK 0x70000000 /* All errors */ 138#define XAXIDMA_BD_STS_RXSOF_MASK 0x08000000 /* First rx pkt */ 139#define XAXIDMA_BD_STS_RXEOF_MASK 0x04000000 /* Last rx pkt */ 140#define XAXIDMA_BD_STS_ALL_MASK 0xFC000000 /* All status bits */ 141 142#define XAXIDMA_BD_MINIMUM_ALIGNMENT 0x40 143 144/* Axi Ethernet registers definition */ 145#define XAE_RAF_OFFSET 0x00000000 /* Reset and Address filter */ 146#define XAE_TPF_OFFSET 0x00000004 /* Tx Pause Frame */ 147#define XAE_IFGP_OFFSET 0x00000008 /* Tx Inter-frame gap adjustment*/ 148#define XAE_IS_OFFSET 0x0000000C /* Interrupt status */ 149#define XAE_IP_OFFSET 0x00000010 /* Interrupt pending */ 150#define XAE_IE_OFFSET 0x00000014 /* Interrupt enable */ 151#define XAE_TTAG_OFFSET 0x00000018 /* Tx VLAN TAG */ 152#define XAE_RTAG_OFFSET 0x0000001C /* Rx VLAN TAG */ 153#define XAE_UAWL_OFFSET 0x00000020 /* Unicast address word lower */ 154#define XAE_UAWU_OFFSET 0x00000024 /* Unicast address word upper */ 155#define XAE_TPID0_OFFSET 0x00000028 /* VLAN TPID0 register */ 156#define XAE_TPID1_OFFSET 0x0000002C /* VLAN TPID1 register */ 157#define XAE_PPST_OFFSET 0x00000030 /* PCS PMA Soft Temac Status Reg */ 158#define XAE_RCW0_OFFSET 0x00000400 /* Rx Configuration Word 0 */ 159#define XAE_RCW1_OFFSET 0x00000404 /* Rx Configuration Word 1 */ 160#define XAE_TC_OFFSET 0x00000408 /* Tx Configuration */ 161#define XAE_FCC_OFFSET 0x0000040C /* Flow Control Configuration */ 162#define XAE_EMMC_OFFSET 0x00000410 /* EMAC mode configuration */ 163#define XAE_PHYC_OFFSET 0x00000414 /* RGMII/SGMII configuration */ 164#define XAE_ID_OFFSET 0x000004F8 /* Identification register */ 165#define XAE_MDIO_MC_OFFSET 0x00000500 /* MII Management Config */ 166#define XAE_MDIO_MCR_OFFSET 0x00000504 /* MII Management Control */ 167#define XAE_MDIO_MWD_OFFSET 0x00000508 /* MII Management Write Data */ 168#define XAE_MDIO_MRD_OFFSET 0x0000050C /* MII Management Read Data */ 169#define XAE_UAW0_OFFSET 0x00000700 /* Unicast address word 0 */ 170#define XAE_UAW1_OFFSET 0x00000704 /* Unicast address word 1 */ 171#define XAE_FMI_OFFSET 0x00000708 /* Filter Mask Index */ 172#define XAE_AF0_OFFSET 0x00000710 /* Address Filter 0 */ 173#define XAE_AF1_OFFSET 0x00000714 /* Address Filter 1 */ 174 175#define XAE_TX_VLAN_DATA_OFFSET 0x00004000 /* TX VLAN data table address */ 176#define XAE_RX_VLAN_DATA_OFFSET 0x00008000 /* RX VLAN data table address */ 177#define XAE_MCAST_TABLE_OFFSET 0x00020000 /* Multicast table address */ 178 179/* Bit Masks for Axi Ethernet RAF register */ 180/* Reject receive multicast destination address */ 181#define XAE_RAF_MCSTREJ_MASK 0x00000002 182/* Reject receive broadcast destination address */ 183#define XAE_RAF_BCSTREJ_MASK 0x00000004 184#define XAE_RAF_TXVTAGMODE_MASK 0x00000018 /* Tx VLAN TAG mode */ 185#define XAE_RAF_RXVTAGMODE_MASK 0x00000060 /* Rx VLAN TAG mode */ 186#define XAE_RAF_TXVSTRPMODE_MASK 0x00000180 /* Tx VLAN STRIP mode */ 187#define XAE_RAF_RXVSTRPMODE_MASK 0x00000600 /* Rx VLAN STRIP mode */ 188#define XAE_RAF_NEWFNCENBL_MASK 0x00000800 /* New function mode */ 189/* Extended Multicast Filtering mode */ 190#define XAE_RAF_EMULTIFLTRENBL_MASK 0x00001000 191#define XAE_RAF_STATSRST_MASK 0x00002000 /* Stats. Counter Reset */ 192#define XAE_RAF_RXBADFRMEN_MASK 0x00004000 /* Recv Bad Frame Enable */ 193#define XAE_RAF_TXVTAGMODE_SHIFT 3 /* Tx Tag mode shift bits */ 194#define XAE_RAF_RXVTAGMODE_SHIFT 5 /* Rx Tag mode shift bits */ 195#define XAE_RAF_TXVSTRPMODE_SHIFT 7 /* Tx strip mode shift bits*/ 196#define XAE_RAF_RXVSTRPMODE_SHIFT 9 /* Rx Strip mode shift bits*/ 197 198/* Bit Masks for Axi Ethernet TPF and IFGP registers */ 199#define XAE_TPF_TPFV_MASK 0x0000FFFF /* Tx pause frame value */ 200/* Transmit inter-frame gap adjustment value */ 201#define XAE_IFGP0_IFGP_MASK 0x0000007F 202 203/* Bit Masks for Axi Ethernet IS, IE and IP registers, Same masks apply 204 * for all 3 registers. 205 */ 206/* Hard register access complete */ 207#define XAE_INT_HARDACSCMPLT_MASK 0x00000001 208/* Auto negotiation complete */ 209#define XAE_INT_AUTONEG_MASK 0x00000002 210#define XAE_INT_RXCMPIT_MASK 0x00000004 /* Rx complete */ 211#define XAE_INT_RXRJECT_MASK 0x00000008 /* Rx frame rejected */ 212#define XAE_INT_RXFIFOOVR_MASK 0x00000010 /* Rx fifo overrun */ 213#define XAE_INT_TXCMPIT_MASK 0x00000020 /* Tx complete */ 214#define XAE_INT_RXDCMLOCK_MASK 0x00000040 /* Rx Dcm Lock */ 215#define XAE_INT_MGTRDY_MASK 0x00000080 /* MGT clock Lock */ 216#define XAE_INT_PHYRSTCMPLT_MASK 0x00000100 /* Phy Reset complete */ 217#define XAE_INT_ALL_MASK 0x0000003F /* All the ints */ 218 219/* INT bits that indicate receive errors */ 220#define XAE_INT_RECV_ERROR_MASK \ 221 (XAE_INT_RXRJECT_MASK | XAE_INT_RXFIFOOVR_MASK) 222 223/* Bit masks for Axi Ethernet VLAN TPID Word 0 register */ 224#define XAE_TPID_0_MASK 0x0000FFFF /* TPID 0 */ 225#define XAE_TPID_1_MASK 0xFFFF0000 /* TPID 1 */ 226 227/* Bit masks for Axi Ethernet VLAN TPID Word 1 register */ 228#define XAE_TPID_2_MASK 0x0000FFFF /* TPID 0 */ 229#define XAE_TPID_3_MASK 0xFFFF0000 /* TPID 1 */ 230 231/* Bit masks for Axi Ethernet RCW1 register */ 232#define XAE_RCW1_RST_MASK 0x80000000 /* Reset */ 233#define XAE_RCW1_JUM_MASK 0x40000000 /* Jumbo frame enable */ 234/* In-Band FCS enable (FCS not stripped) */ 235#define XAE_RCW1_FCS_MASK 0x20000000 236#define XAE_RCW1_RX_MASK 0x10000000 /* Receiver enable */ 237#define XAE_RCW1_VLAN_MASK 0x08000000 /* VLAN frame enable */ 238/* Length/type field valid check disable */ 239#define XAE_RCW1_LT_DIS_MASK 0x02000000 240/* Control frame Length check disable */ 241#define XAE_RCW1_CL_DIS_MASK 0x01000000 242/* Pause frame source address bits [47:32]. Bits [31:0] are 243 * stored in register RCW0 244 */ 245#define XAE_RCW1_PAUSEADDR_MASK 0x0000FFFF 246 247/* Bit masks for Axi Ethernet TC register */ 248#define XAE_TC_RST_MASK 0x80000000 /* Reset */ 249#define XAE_TC_JUM_MASK 0x40000000 /* Jumbo frame enable */ 250/* In-Band FCS enable (FCS not generated) */ 251#define XAE_TC_FCS_MASK 0x20000000 252#define XAE_TC_TX_MASK 0x10000000 /* Transmitter enable */ 253#define XAE_TC_VLAN_MASK 0x08000000 /* VLAN frame enable */ 254/* Inter-frame gap adjustment enable */ 255#define XAE_TC_IFG_MASK 0x02000000 256 257/* Bit masks for Axi Ethernet FCC register */ 258#define XAE_FCC_FCRX_MASK 0x20000000 /* Rx flow control enable */ 259#define XAE_FCC_FCTX_MASK 0x40000000 /* Tx flow control enable */ 260 261/* Bit masks for Axi Ethernet EMMC register */ 262#define XAE_EMMC_LINKSPEED_MASK 0xC0000000 /* Link speed */ 263#define XAE_EMMC_RGMII_MASK 0x20000000 /* RGMII mode enable */ 264#define XAE_EMMC_SGMII_MASK 0x10000000 /* SGMII mode enable */ 265#define XAE_EMMC_GPCS_MASK 0x08000000 /* 1000BaseX mode enable */ 266#define XAE_EMMC_HOST_MASK 0x04000000 /* Host interface enable */ 267#define XAE_EMMC_TX16BIT 0x02000000 /* 16 bit Tx client enable */ 268#define XAE_EMMC_RX16BIT 0x01000000 /* 16 bit Rx client enable */ 269#define XAE_EMMC_LINKSPD_10 0x00000000 /* Link Speed mask for 10 Mbit */ 270#define XAE_EMMC_LINKSPD_100 0x40000000 /* Link Speed mask for 100 Mbit */ 271#define XAE_EMMC_LINKSPD_1000 0x80000000 /* Link Speed mask for 1000 Mbit */ 272 273/* Bit masks for Axi Ethernet PHYC register */ 274#define XAE_PHYC_SGMIILINKSPEED_MASK 0xC0000000 /* SGMII link speed mask*/ 275#define XAE_PHYC_RGMIILINKSPEED_MASK 0x0000000C /* RGMII link speed */ 276#define XAE_PHYC_RGMIIHD_MASK 0x00000002 /* RGMII Half-duplex */ 277#define XAE_PHYC_RGMIILINK_MASK 0x00000001 /* RGMII link status */ 278#define XAE_PHYC_RGLINKSPD_10 0x00000000 /* RGMII link 10 Mbit */ 279#define XAE_PHYC_RGLINKSPD_100 0x00000004 /* RGMII link 100 Mbit */ 280#define XAE_PHYC_RGLINKSPD_1000 0x00000008 /* RGMII link 1000 Mbit */ 281#define XAE_PHYC_SGLINKSPD_10 0x00000000 /* SGMII link 10 Mbit */ 282#define XAE_PHYC_SGLINKSPD_100 0x40000000 /* SGMII link 100 Mbit */ 283#define XAE_PHYC_SGLINKSPD_1000 0x80000000 /* SGMII link 1000 Mbit */ 284 285/* Bit masks for Axi Ethernet MDIO interface MC register */ 286#define XAE_MDIO_MC_MDIOEN_MASK 0x00000040 /* MII management enable */ 287#define XAE_MDIO_MC_CLOCK_DIVIDE_MAX 0x3F /* Maximum MDIO divisor */ 288 289/* Bit masks for Axi Ethernet MDIO interface MCR register */ 290#define XAE_MDIO_MCR_PHYAD_MASK 0x1F000000 /* Phy Address Mask */ 291#define XAE_MDIO_MCR_PHYAD_SHIFT 24 /* Phy Address Shift */ 292#define XAE_MDIO_MCR_REGAD_MASK 0x001F0000 /* Reg Address Mask */ 293#define XAE_MDIO_MCR_REGAD_SHIFT 16 /* Reg Address Shift */ 294#define XAE_MDIO_MCR_OP_MASK 0x0000C000 /* Operation Code Mask */ 295#define XAE_MDIO_MCR_OP_SHIFT 13 /* Operation Code Shift */ 296#define XAE_MDIO_MCR_OP_READ_MASK 0x00008000 /* Op Code Read Mask */ 297#define XAE_MDIO_MCR_OP_WRITE_MASK 0x00004000 /* Op Code Write Mask */ 298#define XAE_MDIO_MCR_INITIATE_MASK 0x00000800 /* Ready Mask */ 299#define XAE_MDIO_MCR_READY_MASK 0x00000080 /* Ready Mask */ 300 301/* Bit masks for Axi Ethernet MDIO interface MIS, MIP, MIE, MIC registers */ 302#define XAE_MDIO_INT_MIIM_RDY_MASK 0x00000001 /* MIIM Interrupt */ 303 304/* Bit masks for Axi Ethernet UAW1 register */ 305/* Station address bits [47:32]; Station address 306 * bits [31:0] are stored in register UAW0 307 */ 308#define XAE_UAW1_UNICASTADDR_MASK 0x0000FFFF 309 310/* Bit masks for Axi Ethernet FMI register */ 311#define XAE_FMI_PM_MASK 0x80000000 /* Promis. mode enable */ 312#define XAE_FMI_IND_MASK 0x00000003 /* Index Mask */ 313 314#define XAE_MDIO_DIV_DFT 29 /* Default MDIO clock divisor */ 315 316/* Defines for different options for C_PHY_TYPE parameter in Axi Ethernet IP */ 317#define XAE_PHY_TYPE_MII 0 318#define XAE_PHY_TYPE_GMII 1 319#define XAE_PHY_TYPE_RGMII_1_3 2 320#define XAE_PHY_TYPE_RGMII_2_0 3 321#define XAE_PHY_TYPE_SGMII 4 322#define XAE_PHY_TYPE_1000BASE_X 5 323 324 /* Total number of entries in the hardware multicast table. */ 325#define XAE_MULTICAST_CAM_TABLE_NUM 4 326 327/* Axi Ethernet Synthesis features */ 328#define XAE_FEATURE_PARTIAL_RX_CSUM (1 << 0) 329#define XAE_FEATURE_PARTIAL_TX_CSUM (1 << 1) 330#define XAE_FEATURE_FULL_RX_CSUM (1 << 2) 331#define XAE_FEATURE_FULL_TX_CSUM (1 << 3) 332#define XAE_FEATURE_DMA_64BIT (1 << 4) 333 334#define XAE_NO_CSUM_OFFLOAD 0 335 336#define XAE_FULL_CSUM_STATUS_MASK 0x00000038 337#define XAE_IP_UDP_CSUM_VALIDATED 0x00000003 338#define XAE_IP_TCP_CSUM_VALIDATED 0x00000002 339 340#define DELAY_OF_ONE_MILLISEC 1000 341 342/** 343 * struct axidma_bd - Axi Dma buffer descriptor layout 344 * @next: MM2S/S2MM Next Descriptor Pointer 345 * @next_msb: MM2S/S2MM Next Descriptor Pointer (high 32 bits) 346 * @phys: MM2S/S2MM Buffer Address 347 * @phys_msb: MM2S/S2MM Buffer Address (high 32 bits) 348 * @reserved3: Reserved and not used 349 * @reserved4: Reserved and not used 350 * @cntrl: MM2S/S2MM Control value 351 * @status: MM2S/S2MM Status value 352 * @app0: MM2S/S2MM User Application Field 0. 353 * @app1: MM2S/S2MM User Application Field 1. 354 * @app2: MM2S/S2MM User Application Field 2. 355 * @app3: MM2S/S2MM User Application Field 3. 356 * @app4: MM2S/S2MM User Application Field 4. 357 */ 358struct axidma_bd { 359 u32 next; /* Physical address of next buffer descriptor */ 360 u32 next_msb; /* high 32 bits for IP >= v7.1, reserved on older IP */ 361 u32 phys; 362 u32 phys_msb; /* for IP >= v7.1, reserved for older IP */ 363 u32 reserved3; 364 u32 reserved4; 365 u32 cntrl; 366 u32 status; 367 u32 app0; 368 u32 app1; /* TX start << 16 | insert */ 369 u32 app2; /* TX csum seed */ 370 u32 app3; 371 u32 app4; /* Last field used by HW */ 372 struct sk_buff *skb; 373} __aligned(XAXIDMA_BD_MINIMUM_ALIGNMENT); 374 375/** 376 * struct axienet_local - axienet private per device data 377 * @ndev: Pointer for net_device to which it will be attached. 378 * @dev: Pointer to device structure 379 * @phy_node: Pointer to device node structure 380 * @mii_bus: Pointer to MII bus structure 381 * @regs_start: Resource start for axienet device addresses 382 * @regs: Base address for the axienet_local device address space 383 * @dma_regs: Base address for the axidma device address space 384 * @dma_err_tasklet: Tasklet structure to process Axi DMA errors 385 * @tx_irq: Axidma TX IRQ number 386 * @rx_irq: Axidma RX IRQ number 387 * @phy_mode: Phy type to identify between MII/GMII/RGMII/SGMII/1000 Base-X 388 * @options: AxiEthernet option word 389 * @last_link: Phy link state in which the PHY was negotiated earlier 390 * @features: Stores the extended features supported by the axienet hw 391 * @tx_bd_v: Virtual address of the TX buffer descriptor ring 392 * @tx_bd_p: Physical address(start address) of the TX buffer descr. ring 393 * @rx_bd_v: Virtual address of the RX buffer descriptor ring 394 * @rx_bd_p: Physical address(start address) of the RX buffer descr. ring 395 * @tx_bd_ci: Stores the index of the Tx buffer descriptor in the ring being 396 * accessed currently. Used while alloc. BDs before a TX starts 397 * @tx_bd_tail: Stores the index of the Tx buffer descriptor in the ring being 398 * accessed currently. Used while processing BDs after the TX 399 * completed. 400 * @rx_bd_ci: Stores the index of the Rx buffer descriptor in the ring being 401 * accessed currently. 402 * @max_frm_size: Stores the maximum size of the frame that can be that 403 * Txed/Rxed in the existing hardware. If jumbo option is 404 * supported, the maximum frame size would be 9k. Else it is 405 * 1522 bytes (assuming support for basic VLAN) 406 * @rxmem: Stores rx memory size for jumbo frame handling. 407 * @csum_offload_on_tx_path: Stores the checksum selection on TX side. 408 * @csum_offload_on_rx_path: Stores the checksum selection on RX side. 409 * @coalesce_count_rx: Store the irq coalesce on RX side. 410 * @coalesce_count_tx: Store the irq coalesce on TX side. 411 */ 412struct axienet_local { 413 struct net_device *ndev; 414 struct device *dev; 415 416 /* Connection to PHY device */ 417 struct device_node *phy_node; 418 419 struct phylink *phylink; 420 struct phylink_config phylink_config; 421 422 /* Reference to PCS/PMA PHY if used */ 423 struct mdio_device *pcs_phy; 424 425 /* Clock for AXI bus */ 426 struct clk *clk; 427 428 /* MDIO bus data */ 429 struct mii_bus *mii_bus; /* MII bus reference */ 430 431 /* IO registers, dma functions and IRQs */ 432 resource_size_t regs_start; 433 void __iomem *regs; 434 void __iomem *dma_regs; 435 436 struct work_struct dma_err_task; 437 438 int tx_irq; 439 int rx_irq; 440 int eth_irq; 441 phy_interface_t phy_mode; 442 443 u32 options; /* Current options word */ 444 u32 features; 445 446 /* Buffer descriptors */ 447 struct axidma_bd *tx_bd_v; 448 dma_addr_t tx_bd_p; 449 u32 tx_bd_num; 450 struct axidma_bd *rx_bd_v; 451 dma_addr_t rx_bd_p; 452 u32 rx_bd_num; 453 u32 tx_bd_ci; 454 u32 tx_bd_tail; 455 u32 rx_bd_ci; 456 457 u32 max_frm_size; 458 u32 rxmem; 459 460 int csum_offload_on_tx_path; 461 int csum_offload_on_rx_path; 462 463 u32 coalesce_count_rx; 464 u32 coalesce_count_tx; 465}; 466 467/** 468 * struct axiethernet_option - Used to set axi ethernet hardware options 469 * @opt: Option to be set. 470 * @reg: Register offset to be written for setting the option 471 * @m_or: Mask to be ORed for setting the option in the register 472 */ 473struct axienet_option { 474 u32 opt; 475 u32 reg; 476 u32 m_or; 477}; 478 479/** 480 * axienet_ior - Memory mapped Axi Ethernet register read 481 * @lp: Pointer to axienet local structure 482 * @offset: Address offset from the base address of Axi Ethernet core 483 * 484 * Return: The contents of the Axi Ethernet register 485 * 486 * This function returns the contents of the corresponding register. 487 */ 488static inline u32 axienet_ior(struct axienet_local *lp, off_t offset) 489{ 490 return ioread32(lp->regs + offset); 491} 492 493static inline u32 axinet_ior_read_mcr(struct axienet_local *lp) 494{ 495 return axienet_ior(lp, XAE_MDIO_MCR_OFFSET); 496} 497 498/** 499 * axienet_iow - Memory mapped Axi Ethernet register write 500 * @lp: Pointer to axienet local structure 501 * @offset: Address offset from the base address of Axi Ethernet core 502 * @value: Value to be written into the Axi Ethernet register 503 * 504 * This function writes the desired value into the corresponding Axi Ethernet 505 * register. 506 */ 507static inline void axienet_iow(struct axienet_local *lp, off_t offset, 508 u32 value) 509{ 510 iowrite32(value, lp->regs + offset); 511} 512 513/* Function prototypes visible in xilinx_axienet_mdio.c for other files */ 514int axienet_mdio_enable(struct axienet_local *lp); 515void axienet_mdio_disable(struct axienet_local *lp); 516int axienet_mdio_setup(struct axienet_local *lp); 517void axienet_mdio_teardown(struct axienet_local *lp); 518 519#endif /* XILINX_AXI_ENET_H */ 520