1 /* 2 * Definitions for Xilinx Axi Ethernet device driver. 3 * 4 * Copyright (c) 2009 Secret Lab Technologies, Ltd. 5 * Copyright (c) 2010 - 2012 Xilinx, Inc. All rights reserved. 6 */ 7 8 #ifndef XILINX_AXIENET_H 9 #define XILINX_AXIENET_H 10 11 #include <linux/netdevice.h> 12 #include <linux/spinlock.h> 13 #include <linux/interrupt.h> 14 15 /* Packet size info */ 16 #define XAE_HDR_SIZE 14 /* Size of Ethernet header */ 17 #define XAE_HDR_VLAN_SIZE 18 /* Size of an Ethernet hdr + VLAN */ 18 #define XAE_TRL_SIZE 4 /* Size of Ethernet trailer (FCS) */ 19 #define XAE_MTU 1500 /* Max MTU of an Ethernet frame */ 20 #define XAE_JUMBO_MTU 9000 /* Max MTU of a jumbo Eth. frame */ 21 22 #define XAE_MAX_FRAME_SIZE (XAE_MTU + XAE_HDR_SIZE + XAE_TRL_SIZE) 23 #define XAE_MAX_VLAN_FRAME_SIZE (XAE_MTU + XAE_HDR_VLAN_SIZE + XAE_TRL_SIZE) 24 #define XAE_MAX_JUMBO_FRAME_SIZE (XAE_JUMBO_MTU + XAE_HDR_SIZE + XAE_TRL_SIZE) 25 26 /* Configuration options */ 27 28 /* Accept all incoming packets. Default: disabled (cleared) */ 29 #define XAE_OPTION_PROMISC (1 << 0) 30 31 /* Jumbo frame support for Tx & Rx. Default: disabled (cleared) */ 32 #define XAE_OPTION_JUMBO (1 << 1) 33 34 /* VLAN Rx & Tx frame support. Default: disabled (cleared) */ 35 #define XAE_OPTION_VLAN (1 << 2) 36 37 /* Enable recognition of flow control frames on Rx. Default: enabled (set) */ 38 #define XAE_OPTION_FLOW_CONTROL (1 << 4) 39 40 /* Strip FCS and PAD from incoming frames. Note: PAD from VLAN frames is not 41 * stripped. Default: disabled (set) */ 42 #define XAE_OPTION_FCS_STRIP (1 << 5) 43 44 /* Generate FCS field and add PAD automatically for outgoing frames. 45 * Default: enabled (set) */ 46 #define XAE_OPTION_FCS_INSERT (1 << 6) 47 48 /* Enable Length/Type error checking for incoming frames. When this option is 49 * set, the MAC will filter frames that have a mismatched type/length field 50 * and if XAE_OPTION_REPORT_RXERR is set, the user is notified when these 51 * types of frames are encountered. When this option is cleared, the MAC will 52 * allow these types of frames to be received. Default: enabled (set) */ 53 #define XAE_OPTION_LENTYPE_ERR (1 << 7) 54 55 /* Enable the transmitter. Default: enabled (set) */ 56 #define XAE_OPTION_TXEN (1 << 11) 57 58 /* Enable the receiver. Default: enabled (set) */ 59 #define XAE_OPTION_RXEN (1 << 12) 60 61 /* Default options set when device is initialized or reset */ 62 #define XAE_OPTION_DEFAULTS \ 63 (XAE_OPTION_TXEN | \ 64 XAE_OPTION_FLOW_CONTROL | \ 65 XAE_OPTION_RXEN) 66 67 /* Axi DMA Register definitions */ 68 69 #define XAXIDMA_TX_CR_OFFSET 0x00000000 /* Channel control */ 70 #define XAXIDMA_TX_SR_OFFSET 0x00000004 /* Status */ 71 #define XAXIDMA_TX_CDESC_OFFSET 0x00000008 /* Current descriptor pointer */ 72 #define XAXIDMA_TX_TDESC_OFFSET 0x00000010 /* Tail descriptor pointer */ 73 74 #define XAXIDMA_RX_CR_OFFSET 0x00000030 /* Channel control */ 75 #define XAXIDMA_RX_SR_OFFSET 0x00000034 /* Status */ 76 #define XAXIDMA_RX_CDESC_OFFSET 0x00000038 /* Current descriptor pointer */ 77 #define XAXIDMA_RX_TDESC_OFFSET 0x00000040 /* Tail descriptor pointer */ 78 79 #define XAXIDMA_CR_RUNSTOP_MASK 0x00000001 /* Start/stop DMA channel */ 80 #define XAXIDMA_CR_RESET_MASK 0x00000004 /* Reset DMA engine */ 81 82 #define XAXIDMA_BD_NDESC_OFFSET 0x00 /* Next descriptor pointer */ 83 #define XAXIDMA_BD_BUFA_OFFSET 0x08 /* Buffer address */ 84 #define XAXIDMA_BD_CTRL_LEN_OFFSET 0x18 /* Control/buffer length */ 85 #define XAXIDMA_BD_STS_OFFSET 0x1C /* Status */ 86 #define XAXIDMA_BD_USR0_OFFSET 0x20 /* User IP specific word0 */ 87 #define XAXIDMA_BD_USR1_OFFSET 0x24 /* User IP specific word1 */ 88 #define XAXIDMA_BD_USR2_OFFSET 0x28 /* User IP specific word2 */ 89 #define XAXIDMA_BD_USR3_OFFSET 0x2C /* User IP specific word3 */ 90 #define XAXIDMA_BD_USR4_OFFSET 0x30 /* User IP specific word4 */ 91 #define XAXIDMA_BD_ID_OFFSET 0x34 /* Sw ID */ 92 #define XAXIDMA_BD_HAS_STSCNTRL_OFFSET 0x38 /* Whether has stscntrl strm */ 93 #define XAXIDMA_BD_HAS_DRE_OFFSET 0x3C /* Whether has DRE */ 94 95 #define XAXIDMA_BD_HAS_DRE_SHIFT 8 /* Whether has DRE shift */ 96 #define XAXIDMA_BD_HAS_DRE_MASK 0xF00 /* Whether has DRE mask */ 97 #define XAXIDMA_BD_WORDLEN_MASK 0xFF /* Whether has DRE mask */ 98 99 #define XAXIDMA_BD_CTRL_LENGTH_MASK 0x007FFFFF /* Requested len */ 100 #define XAXIDMA_BD_CTRL_TXSOF_MASK 0x08000000 /* First tx packet */ 101 #define XAXIDMA_BD_CTRL_TXEOF_MASK 0x04000000 /* Last tx packet */ 102 #define XAXIDMA_BD_CTRL_ALL_MASK 0x0C000000 /* All control bits */ 103 104 #define XAXIDMA_DELAY_MASK 0xFF000000 /* Delay timeout counter */ 105 #define XAXIDMA_COALESCE_MASK 0x00FF0000 /* Coalesce counter */ 106 107 #define XAXIDMA_DELAY_SHIFT 24 108 #define XAXIDMA_COALESCE_SHIFT 16 109 110 #define XAXIDMA_IRQ_IOC_MASK 0x00001000 /* Completion intr */ 111 #define XAXIDMA_IRQ_DELAY_MASK 0x00002000 /* Delay interrupt */ 112 #define XAXIDMA_IRQ_ERROR_MASK 0x00004000 /* Error interrupt */ 113 #define XAXIDMA_IRQ_ALL_MASK 0x00007000 /* All interrupts */ 114 115 /* Default TX/RX Threshold and waitbound values for SGDMA mode */ 116 #define XAXIDMA_DFT_TX_THRESHOLD 24 117 #define XAXIDMA_DFT_TX_WAITBOUND 254 118 #define XAXIDMA_DFT_RX_THRESHOLD 24 119 #define XAXIDMA_DFT_RX_WAITBOUND 254 120 121 #define XAXIDMA_BD_CTRL_TXSOF_MASK 0x08000000 /* First tx packet */ 122 #define XAXIDMA_BD_CTRL_TXEOF_MASK 0x04000000 /* Last tx packet */ 123 #define XAXIDMA_BD_CTRL_ALL_MASK 0x0C000000 /* All control bits */ 124 125 #define XAXIDMA_BD_STS_ACTUAL_LEN_MASK 0x007FFFFF /* Actual len */ 126 #define XAXIDMA_BD_STS_COMPLETE_MASK 0x80000000 /* Completed */ 127 #define XAXIDMA_BD_STS_DEC_ERR_MASK 0x40000000 /* Decode error */ 128 #define XAXIDMA_BD_STS_SLV_ERR_MASK 0x20000000 /* Slave error */ 129 #define XAXIDMA_BD_STS_INT_ERR_MASK 0x10000000 /* Internal err */ 130 #define XAXIDMA_BD_STS_ALL_ERR_MASK 0x70000000 /* All errors */ 131 #define XAXIDMA_BD_STS_RXSOF_MASK 0x08000000 /* First rx pkt */ 132 #define XAXIDMA_BD_STS_RXEOF_MASK 0x04000000 /* Last rx pkt */ 133 #define XAXIDMA_BD_STS_ALL_MASK 0xFC000000 /* All status bits */ 134 135 #define XAXIDMA_BD_MINIMUM_ALIGNMENT 0x40 136 137 /* Axi Ethernet registers definition */ 138 #define XAE_RAF_OFFSET 0x00000000 /* Reset and Address filter */ 139 #define XAE_TPF_OFFSET 0x00000004 /* Tx Pause Frame */ 140 #define XAE_IFGP_OFFSET 0x00000008 /* Tx Inter-frame gap adjustment*/ 141 #define XAE_IS_OFFSET 0x0000000C /* Interrupt status */ 142 #define XAE_IP_OFFSET 0x00000010 /* Interrupt pending */ 143 #define XAE_IE_OFFSET 0x00000014 /* Interrupt enable */ 144 #define XAE_TTAG_OFFSET 0x00000018 /* Tx VLAN TAG */ 145 #define XAE_RTAG_OFFSET 0x0000001C /* Rx VLAN TAG */ 146 #define XAE_UAWL_OFFSET 0x00000020 /* Unicast address word lower */ 147 #define XAE_UAWU_OFFSET 0x00000024 /* Unicast address word upper */ 148 #define XAE_TPID0_OFFSET 0x00000028 /* VLAN TPID0 register */ 149 #define XAE_TPID1_OFFSET 0x0000002C /* VLAN TPID1 register */ 150 #define XAE_PPST_OFFSET 0x00000030 /* PCS PMA Soft Temac Status Reg */ 151 #define XAE_RCW0_OFFSET 0x00000400 /* Rx Configuration Word 0 */ 152 #define XAE_RCW1_OFFSET 0x00000404 /* Rx Configuration Word 1 */ 153 #define XAE_TC_OFFSET 0x00000408 /* Tx Configuration */ 154 #define XAE_FCC_OFFSET 0x0000040C /* Flow Control Configuration */ 155 #define XAE_EMMC_OFFSET 0x00000410 /* EMAC mode configuration */ 156 #define XAE_PHYC_OFFSET 0x00000414 /* RGMII/SGMII configuration */ 157 #define XAE_MDIO_MC_OFFSET 0x00000500 /* MII Management Config */ 158 #define XAE_MDIO_MCR_OFFSET 0x00000504 /* MII Management Control */ 159 #define XAE_MDIO_MWD_OFFSET 0x00000508 /* MII Management Write Data */ 160 #define XAE_MDIO_MRD_OFFSET 0x0000050C /* MII Management Read Data */ 161 #define XAE_MDIO_MIS_OFFSET 0x00000600 /* MII Management Interrupt Status */ 162 #define XAE_MDIO_MIP_OFFSET 0x00000620 /* MII Mgmt Interrupt Pending 163 * register offset */ 164 #define XAE_MDIO_MIE_OFFSET 0x00000640 /* MII Management Interrupt Enable 165 * register offset */ 166 #define XAE_MDIO_MIC_OFFSET 0x00000660 /* MII Management Interrupt Clear 167 * register offset. */ 168 #define XAE_UAW0_OFFSET 0x00000700 /* Unicast address word 0 */ 169 #define XAE_UAW1_OFFSET 0x00000704 /* Unicast address word 1 */ 170 #define XAE_FMI_OFFSET 0x00000708 /* Filter Mask Index */ 171 #define XAE_AF0_OFFSET 0x00000710 /* Address Filter 0 */ 172 #define XAE_AF1_OFFSET 0x00000714 /* Address Filter 1 */ 173 174 #define XAE_TX_VLAN_DATA_OFFSET 0x00004000 /* TX VLAN data table address */ 175 #define XAE_RX_VLAN_DATA_OFFSET 0x00008000 /* RX VLAN data table address */ 176 #define XAE_MCAST_TABLE_OFFSET 0x00020000 /* Multicast table address */ 177 178 /* Bit Masks for Axi Ethernet RAF register */ 179 #define XAE_RAF_MCSTREJ_MASK 0x00000002 /* Reject receive multicast 180 * destination address */ 181 #define XAE_RAF_BCSTREJ_MASK 0x00000004 /* Reject receive broadcast 182 * destination address */ 183 #define XAE_RAF_TXVTAGMODE_MASK 0x00000018 /* Tx VLAN TAG mode */ 184 #define XAE_RAF_RXVTAGMODE_MASK 0x00000060 /* Rx VLAN TAG mode */ 185 #define XAE_RAF_TXVSTRPMODE_MASK 0x00000180 /* Tx VLAN STRIP mode */ 186 #define XAE_RAF_RXVSTRPMODE_MASK 0x00000600 /* Rx VLAN STRIP mode */ 187 #define XAE_RAF_NEWFNCENBL_MASK 0x00000800 /* New function mode */ 188 #define XAE_RAF_EMULTIFLTRENBL_MASK 0x00001000 /* Exteneded Multicast 189 * Filtering mode 190 */ 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 #define XAE_IFGP0_IFGP_MASK 0x0000007F /* Transmit inter-frame 201 * gap adjustment value */ 202 203 /* Bit Masks for Axi Ethernet IS, IE and IP registers, Same masks apply 204 * for all 3 registers. */ 205 #define XAE_INT_HARDACSCMPLT_MASK 0x00000001 /* Hard register access 206 * complete */ 207 #define XAE_INT_AUTONEG_MASK 0x00000002 /* Auto negotiation 208 * complete */ 209 #define XAE_INT_RXCMPIT_MASK 0x00000004 /* Rx complete */ 210 #define XAE_INT_RXRJECT_MASK 0x00000008 /* Rx frame rejected */ 211 #define XAE_INT_RXFIFOOVR_MASK 0x00000010 /* Rx fifo overrun */ 212 #define XAE_INT_TXCMPIT_MASK 0x00000020 /* Tx complete */ 213 #define XAE_INT_RXDCMLOCK_MASK 0x00000040 /* Rx Dcm Lock */ 214 #define XAE_INT_MGTRDY_MASK 0x00000080 /* MGT clock Lock */ 215 #define XAE_INT_PHYRSTCMPLT_MASK 0x00000100 /* Phy Reset complete */ 216 #define XAE_INT_ALL_MASK 0x0000003F /* All the ints */ 217 218 #define XAE_INT_RECV_ERROR_MASK \ 219 (XAE_INT_RXRJECT_MASK | XAE_INT_RXFIFOOVR_MASK) /* INT bits that 220 * indicate receive 221 * errors */ 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 #define XAE_RCW1_FCS_MASK 0x20000000 /* In-Band FCS enable 235 * (FCS not stripped) */ 236 #define XAE_RCW1_RX_MASK 0x10000000 /* Receiver enable */ 237 #define XAE_RCW1_VLAN_MASK 0x08000000 /* VLAN frame enable */ 238 #define XAE_RCW1_LT_DIS_MASK 0x02000000 /* Length/type field valid check 239 * disable */ 240 #define XAE_RCW1_CL_DIS_MASK 0x01000000 /* Control frame Length check 241 * disable */ 242 #define XAE_RCW1_PAUSEADDR_MASK 0x0000FFFF /* Pause frame source address 243 * bits [47:32]. Bits [31:0] are 244 * stored in register RCW0 */ 245 246 /* Bit masks for Axi Ethernet TC register */ 247 #define XAE_TC_RST_MASK 0x80000000 /* Reset */ 248 #define XAE_TC_JUM_MASK 0x40000000 /* Jumbo frame enable */ 249 #define XAE_TC_FCS_MASK 0x20000000 /* In-Band FCS enable 250 * (FCS not generated) */ 251 #define XAE_TC_TX_MASK 0x10000000 /* Transmitter enable */ 252 #define XAE_TC_VLAN_MASK 0x08000000 /* VLAN frame enable */ 253 #define XAE_TC_IFG_MASK 0x02000000 /* Inter-frame gap adjustment 254 * enable */ 255 256 /* Bit masks for Axi Ethernet FCC register */ 257 #define XAE_FCC_FCRX_MASK 0x20000000 /* Rx flow control enable */ 258 #define XAE_FCC_FCTX_MASK 0x40000000 /* Tx flow control enable */ 259 260 /* Bit masks for Axi Ethernet EMMC register */ 261 #define XAE_EMMC_LINKSPEED_MASK 0xC0000000 /* Link speed */ 262 #define XAE_EMMC_RGMII_MASK 0x20000000 /* RGMII mode enable */ 263 #define XAE_EMMC_SGMII_MASK 0x10000000 /* SGMII mode enable */ 264 #define XAE_EMMC_GPCS_MASK 0x08000000 /* 1000BaseX mode enable */ 265 #define XAE_EMMC_HOST_MASK 0x04000000 /* Host interface enable */ 266 #define XAE_EMMC_TX16BIT 0x02000000 /* 16 bit Tx client enable */ 267 #define XAE_EMMC_RX16BIT 0x01000000 /* 16 bit Rx client enable */ 268 #define XAE_EMMC_LINKSPD_10 0x00000000 /* Link Speed mask for 10 Mbit */ 269 #define XAE_EMMC_LINKSPD_100 0x40000000 /* Link Speed mask for 100 Mbit */ 270 #define XAE_EMMC_LINKSPD_1000 0x80000000 /* Link Speed mask for 1000 Mbit */ 271 272 /* Bit masks for Axi Ethernet PHYC register */ 273 #define XAE_PHYC_SGMIILINKSPEED_MASK 0xC0000000 /* SGMII link speed mask*/ 274 #define XAE_PHYC_RGMIILINKSPEED_MASK 0x0000000C /* RGMII link speed */ 275 #define XAE_PHYC_RGMIIHD_MASK 0x00000002 /* RGMII Half-duplex */ 276 #define XAE_PHYC_RGMIILINK_MASK 0x00000001 /* RGMII link status */ 277 #define XAE_PHYC_RGLINKSPD_10 0x00000000 /* RGMII link 10 Mbit */ 278 #define XAE_PHYC_RGLINKSPD_100 0x00000004 /* RGMII link 100 Mbit */ 279 #define XAE_PHYC_RGLINKSPD_1000 0x00000008 /* RGMII link 1000 Mbit */ 280 #define XAE_PHYC_SGLINKSPD_10 0x00000000 /* SGMII link 10 Mbit */ 281 #define XAE_PHYC_SGLINKSPD_100 0x40000000 /* SGMII link 100 Mbit */ 282 #define XAE_PHYC_SGLINKSPD_1000 0x80000000 /* SGMII link 1000 Mbit */ 283 284 /* Bit masks for Axi Ethernet MDIO interface MC register */ 285 #define XAE_MDIO_MC_MDIOEN_MASK 0x00000040 /* MII management enable */ 286 #define XAE_MDIO_MC_CLOCK_DIVIDE_MAX 0x3F /* Maximum MDIO divisor */ 287 288 /* Bit masks for Axi Ethernet MDIO interface MCR register */ 289 #define XAE_MDIO_MCR_PHYAD_MASK 0x1F000000 /* Phy Address Mask */ 290 #define XAE_MDIO_MCR_PHYAD_SHIFT 24 /* Phy Address Shift */ 291 #define XAE_MDIO_MCR_REGAD_MASK 0x001F0000 /* Reg Address Mask */ 292 #define XAE_MDIO_MCR_REGAD_SHIFT 16 /* Reg Address Shift */ 293 #define XAE_MDIO_MCR_OP_MASK 0x0000C000 /* Operation Code Mask */ 294 #define XAE_MDIO_MCR_OP_SHIFT 13 /* Operation Code Shift */ 295 #define XAE_MDIO_MCR_OP_READ_MASK 0x00008000 /* Op Code Read Mask */ 296 #define XAE_MDIO_MCR_OP_WRITE_MASK 0x00004000 /* Op Code Write Mask */ 297 #define XAE_MDIO_MCR_INITIATE_MASK 0x00000800 /* Ready Mask */ 298 #define XAE_MDIO_MCR_READY_MASK 0x00000080 /* Ready Mask */ 299 300 /* Bit masks for Axi Ethernet MDIO interface MIS, MIP, MIE, MIC registers */ 301 #define XAE_MDIO_INT_MIIM_RDY_MASK 0x00000001 /* MIIM Interrupt */ 302 303 /* Bit masks for Axi Ethernet UAW1 register */ 304 #define XAE_UAW1_UNICASTADDR_MASK 0x0000FFFF /* Station address bits 305 * [47:32]; Station address 306 * bits [31:0] are stored in 307 * register UAW0 */ 308 309 /* Bit masks for Axi Ethernet FMI register */ 310 #define XAE_FMI_PM_MASK 0x80000000 /* Promis. mode enable */ 311 #define XAE_FMI_IND_MASK 0x00000003 /* Index Mask */ 312 313 #define XAE_MDIO_DIV_DFT 29 /* Default MDIO clock divisor */ 314 315 /* Defines for different options for C_PHY_TYPE parameter in Axi Ethernet IP */ 316 #define XAE_PHY_TYPE_MII 0 317 #define XAE_PHY_TYPE_GMII 1 318 #define XAE_PHY_TYPE_RGMII_1_3 2 319 #define XAE_PHY_TYPE_RGMII_2_0 3 320 #define XAE_PHY_TYPE_SGMII 4 321 #define XAE_PHY_TYPE_1000BASE_X 5 322 323 #define XAE_MULTICAST_CAM_TABLE_NUM 4 /* Total number of entries in the 324 * hardware multicast table. */ 325 326 /* Axi Ethernet Synthesis features */ 327 #define XAE_FEATURE_PARTIAL_RX_CSUM (1 << 0) 328 #define XAE_FEATURE_PARTIAL_TX_CSUM (1 << 1) 329 #define XAE_FEATURE_FULL_RX_CSUM (1 << 2) 330 #define XAE_FEATURE_FULL_TX_CSUM (1 << 3) 331 332 #define XAE_NO_CSUM_OFFLOAD 0 333 334 #define XAE_FULL_CSUM_STATUS_MASK 0x00000038 335 #define XAE_IP_UDP_CSUM_VALIDATED 0x00000003 336 #define XAE_IP_TCP_CSUM_VALIDATED 0x00000002 337 338 #define DELAY_OF_ONE_MILLISEC 1000 339 340 /** 341 * struct axidma_bd - Axi Dma buffer descriptor layout 342 * @next: MM2S/S2MM Next Descriptor Pointer 343 * @reserved1: Reserved and not used 344 * @phys: MM2S/S2MM Buffer Address 345 * @reserved2: Reserved and not used 346 * @reserved3: Reserved and not used 347 * @reserved4: Reserved and not used 348 * @cntrl: MM2S/S2MM Control value 349 * @status: MM2S/S2MM Status value 350 * @app0: MM2S/S2MM User Application Field 0. 351 * @app1: MM2S/S2MM User Application Field 1. 352 * @app2: MM2S/S2MM User Application Field 2. 353 * @app3: MM2S/S2MM User Application Field 3. 354 * @app4: MM2S/S2MM User Application Field 4. 355 * @sw_id_offset: MM2S/S2MM Sw ID 356 * @reserved5: Reserved and not used 357 * @reserved6: Reserved and not used 358 */ 359 struct axidma_bd { 360 u32 next; /* Physical address of next buffer descriptor */ 361 u32 reserved1; 362 u32 phys; 363 u32 reserved2; 364 u32 reserved3; 365 u32 reserved4; 366 u32 cntrl; 367 u32 status; 368 u32 app0; 369 u32 app1; /* TX start << 16 | insert */ 370 u32 app2; /* TX csum seed */ 371 u32 app3; 372 u32 app4; 373 u32 sw_id_offset; 374 u32 reserved5; 375 u32 reserved6; 376 }; 377 378 /** 379 * struct axienet_local - axienet private per device data 380 * @ndev: Pointer for net_device to which it will be attached. 381 * @dev: Pointer to device structure 382 * @phy_dev: Pointer to PHY device structure attached to the axienet_local 383 * @phy_node: Pointer to device node structure 384 * @mii_bus: Pointer to MII bus structure 385 * @mdio_irqs: IRQs table for MDIO bus required in mii_bus structure 386 * @regs: Base address for the axienet_local device address space 387 * @dma_regs: Base address for the axidma device address space 388 * @dma_err_tasklet: Tasklet structure to process Axi DMA errors 389 * @tx_irq: Axidma TX IRQ number 390 * @rx_irq: Axidma RX IRQ number 391 * @phy_type: Phy type to identify between MII/GMII/RGMII/SGMII/1000 Base-X 392 * @options: AxiEthernet option word 393 * @last_link: Phy link state in which the PHY was negotiated earlier 394 * @features: Stores the extended features supported by the axienet hw 395 * @tx_bd_v: Virtual address of the TX buffer descriptor ring 396 * @tx_bd_p: Physical address(start address) of the TX buffer descr. ring 397 * @rx_bd_v: Virtual address of the RX buffer descriptor ring 398 * @rx_bd_p: Physical address(start address) of the RX buffer descr. ring 399 * @tx_bd_ci: Stores the index of the Tx buffer descriptor in the ring being 400 * accessed currently. Used while alloc. BDs before a TX starts 401 * @tx_bd_tail: Stores the index of the Tx buffer descriptor in the ring being 402 * accessed currently. Used while processing BDs after the TX 403 * completed. 404 * @rx_bd_ci: Stores the index of the Rx buffer descriptor in the ring being 405 * accessed currently. 406 * @max_frm_size: Stores the maximum size of the frame that can be that 407 * Txed/Rxed in the existing hardware. If jumbo option is 408 * supported, the maximum frame size would be 9k. Else it is 409 * 1522 bytes (assuming support for basic VLAN) 410 * @jumbo_support: Stores hardware configuration for jumbo support. If hardware 411 * can handle jumbo packets, this entry will be 1, else 0. 412 */ 413 struct axienet_local { 414 struct net_device *ndev; 415 struct device *dev; 416 417 /* Connection to PHY device */ 418 struct phy_device *phy_dev; /* Pointer to PHY device */ 419 struct device_node *phy_node; 420 421 /* MDIO bus data */ 422 struct mii_bus *mii_bus; /* MII bus reference */ 423 int mdio_irqs[PHY_MAX_ADDR]; /* IRQs table for MDIO bus */ 424 425 /* IO registers, dma functions and IRQs */ 426 void __iomem *regs; 427 void __iomem *dma_regs; 428 429 struct tasklet_struct dma_err_tasklet; 430 431 int tx_irq; 432 int rx_irq; 433 u32 phy_type; 434 435 u32 options; /* Current options word */ 436 u32 last_link; 437 u32 features; 438 439 /* Buffer descriptors */ 440 struct axidma_bd *tx_bd_v; 441 dma_addr_t tx_bd_p; 442 struct axidma_bd *rx_bd_v; 443 dma_addr_t rx_bd_p; 444 u32 tx_bd_ci; 445 u32 tx_bd_tail; 446 u32 rx_bd_ci; 447 448 u32 max_frm_size; 449 u32 jumbo_support; 450 451 int csum_offload_on_tx_path; 452 int csum_offload_on_rx_path; 453 454 u32 coalesce_count_rx; 455 u32 coalesce_count_tx; 456 }; 457 458 /** 459 * struct axiethernet_option - Used to set axi ethernet hardware options 460 * @opt: Option to be set. 461 * @reg: Register offset to be written for setting the option 462 * @m_or: Mask to be ORed for setting the option in the register 463 */ 464 struct axienet_option { 465 u32 opt; 466 u32 reg; 467 u32 m_or; 468 }; 469 470 /** 471 * axienet_ior - Memory mapped Axi Ethernet register read 472 * @lp: Pointer to axienet local structure 473 * @offset: Address offset from the base address of Axi Ethernet core 474 * 475 * returns: The contents of the Axi Ethernet register 476 * 477 * This function returns the contents of the corresponding register. 478 */ 479 static inline u32 axienet_ior(struct axienet_local *lp, off_t offset) 480 { 481 return in_be32(lp->regs + offset); 482 } 483 484 /** 485 * axienet_iow - Memory mapped Axi Ethernet register write 486 * @lp: Pointer to axienet local structure 487 * @offset: Address offset from the base address of Axi Ethernet core 488 * @value: Value to be written into the Axi Ethernet register 489 * 490 * This function writes the desired value into the corresponding Axi Ethernet 491 * register. 492 */ 493 static inline void axienet_iow(struct axienet_local *lp, off_t offset, 494 u32 value) 495 { 496 out_be32((lp->regs + offset), value); 497 } 498 499 /* Function prototypes visible in xilinx_axienet_mdio.c for other files */ 500 int axienet_mdio_setup(struct axienet_local *lp, struct device_node *np); 501 int axienet_mdio_wait_until_ready(struct axienet_local *lp); 502 void axienet_mdio_teardown(struct axienet_local *lp); 503 504 #endif /* XILINX_AXI_ENET_H */ 505