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 delay timer values for SGDMA mode */ 123 #define XAXIDMA_DFT_TX_THRESHOLD 24 124 #define XAXIDMA_DFT_TX_USEC 50 125 #define XAXIDMA_DFT_RX_THRESHOLD 1 126 #define XAXIDMA_DFT_RX_USEC 50 127 128 #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 /* Xilinx PCS/PMA PHY register for switching 1000BaseX or SGMII */ 343 #define XLNX_MII_STD_SELECT_REG 0x11 344 #define XLNX_MII_STD_SELECT_SGMII BIT(0) 345 346 /** 347 * struct axidma_bd - Axi Dma buffer descriptor layout 348 * @next: MM2S/S2MM Next Descriptor Pointer 349 * @next_msb: MM2S/S2MM Next Descriptor Pointer (high 32 bits) 350 * @phys: MM2S/S2MM Buffer Address 351 * @phys_msb: MM2S/S2MM Buffer Address (high 32 bits) 352 * @reserved3: Reserved and not used 353 * @reserved4: Reserved and not used 354 * @cntrl: MM2S/S2MM Control value 355 * @status: MM2S/S2MM Status value 356 * @app0: MM2S/S2MM User Application Field 0. 357 * @app1: MM2S/S2MM User Application Field 1. 358 * @app2: MM2S/S2MM User Application Field 2. 359 * @app3: MM2S/S2MM User Application Field 3. 360 * @app4: MM2S/S2MM User Application Field 4. 361 */ 362 struct axidma_bd { 363 u32 next; /* Physical address of next buffer descriptor */ 364 u32 next_msb; /* high 32 bits for IP >= v7.1, reserved on older IP */ 365 u32 phys; 366 u32 phys_msb; /* for IP >= v7.1, reserved for older IP */ 367 u32 reserved3; 368 u32 reserved4; 369 u32 cntrl; 370 u32 status; 371 u32 app0; 372 u32 app1; /* TX start << 16 | insert */ 373 u32 app2; /* TX csum seed */ 374 u32 app3; 375 u32 app4; /* Last field used by HW */ 376 struct sk_buff *skb; 377 } __aligned(XAXIDMA_BD_MINIMUM_ALIGNMENT); 378 379 #define XAE_NUM_MISC_CLOCKS 3 380 381 /** 382 * struct axienet_local - axienet private per device data 383 * @ndev: Pointer for net_device to which it will be attached. 384 * @dev: Pointer to device structure 385 * @phy_node: Pointer to device node structure 386 * @phylink: Pointer to phylink instance 387 * @phylink_config: phylink configuration settings 388 * @pcs_phy: Reference to PCS/PMA PHY if used 389 * @pcs: phylink pcs structure for PCS PHY 390 * @switch_x_sgmii: Whether switchable 1000BaseX/SGMII mode is enabled in the core 391 * @axi_clk: AXI4-Lite bus clock 392 * @misc_clks: Misc ethernet clocks (AXI4-Stream, Ref, MGT clocks) 393 * @mii_bus: Pointer to MII bus structure 394 * @mii_clk_div: MII bus clock divider value 395 * @regs_start: Resource start for axienet device addresses 396 * @regs: Base address for the axienet_local device address space 397 * @dma_regs: Base address for the axidma device address space 398 * @napi_rx: NAPI RX control structure 399 * @rx_dma_cr: Nominal content of RX DMA control register 400 * @rx_bd_v: Virtual address of the RX buffer descriptor ring 401 * @rx_bd_p: Physical address(start address) of the RX buffer descr. ring 402 * @rx_bd_num: Size of RX buffer descriptor ring 403 * @rx_bd_ci: Stores the index of the Rx buffer descriptor in the ring being 404 * accessed currently. 405 * @napi_tx: NAPI TX control structure 406 * @tx_dma_cr: Nominal content of TX DMA control register 407 * @tx_bd_v: Virtual address of the TX buffer descriptor ring 408 * @tx_bd_p: Physical address(start address) of the TX buffer descr. ring 409 * @tx_bd_num: Size of TX buffer descriptor ring 410 * @tx_bd_ci: Stores the next Tx buffer descriptor in the ring that may be 411 * complete. Only updated at runtime by TX NAPI poll. 412 * @tx_bd_tail: Stores the index of the next Tx buffer descriptor in the ring 413 * to be populated. 414 * @dma_err_task: Work structure to process Axi DMA errors 415 * @tx_irq: Axidma TX IRQ number 416 * @rx_irq: Axidma RX IRQ number 417 * @eth_irq: Ethernet core IRQ number 418 * @phy_mode: Phy type to identify between MII/GMII/RGMII/SGMII/1000 Base-X 419 * @options: AxiEthernet option word 420 * @features: Stores the extended features supported by the axienet hw 421 * @max_frm_size: Stores the maximum size of the frame that can be that 422 * Txed/Rxed in the existing hardware. If jumbo option is 423 * supported, the maximum frame size would be 9k. Else it is 424 * 1522 bytes (assuming support for basic VLAN) 425 * @rxmem: Stores rx memory size for jumbo frame handling. 426 * @csum_offload_on_tx_path: Stores the checksum selection on TX side. 427 * @csum_offload_on_rx_path: Stores the checksum selection on RX side. 428 * @coalesce_count_rx: Store the irq coalesce on RX side. 429 * @coalesce_usec_rx: IRQ coalesce delay for RX 430 * @coalesce_count_tx: Store the irq coalesce on TX side. 431 * @coalesce_usec_tx: IRQ coalesce delay for TX 432 */ 433 struct axienet_local { 434 struct net_device *ndev; 435 struct device *dev; 436 437 struct phylink *phylink; 438 struct phylink_config phylink_config; 439 440 struct mdio_device *pcs_phy; 441 struct phylink_pcs pcs; 442 443 bool switch_x_sgmii; 444 445 struct clk *axi_clk; 446 struct clk_bulk_data misc_clks[XAE_NUM_MISC_CLOCKS]; 447 448 struct mii_bus *mii_bus; 449 u8 mii_clk_div; 450 451 resource_size_t regs_start; 452 void __iomem *regs; 453 void __iomem *dma_regs; 454 455 struct napi_struct napi_rx; 456 u32 rx_dma_cr; 457 struct axidma_bd *rx_bd_v; 458 dma_addr_t rx_bd_p; 459 u32 rx_bd_num; 460 u32 rx_bd_ci; 461 462 struct napi_struct napi_tx; 463 u32 tx_dma_cr; 464 struct axidma_bd *tx_bd_v; 465 dma_addr_t tx_bd_p; 466 u32 tx_bd_num; 467 u32 tx_bd_ci; 468 u32 tx_bd_tail; 469 470 struct work_struct dma_err_task; 471 472 int tx_irq; 473 int rx_irq; 474 int eth_irq; 475 phy_interface_t phy_mode; 476 477 u32 options; 478 u32 features; 479 480 u32 max_frm_size; 481 u32 rxmem; 482 483 int csum_offload_on_tx_path; 484 int csum_offload_on_rx_path; 485 486 u32 coalesce_count_rx; 487 u32 coalesce_usec_rx; 488 u32 coalesce_count_tx; 489 u32 coalesce_usec_tx; 490 }; 491 492 /** 493 * struct axiethernet_option - Used to set axi ethernet hardware options 494 * @opt: Option to be set. 495 * @reg: Register offset to be written for setting the option 496 * @m_or: Mask to be ORed for setting the option in the register 497 */ 498 struct axienet_option { 499 u32 opt; 500 u32 reg; 501 u32 m_or; 502 }; 503 504 /** 505 * axienet_ior - Memory mapped Axi Ethernet register read 506 * @lp: Pointer to axienet local structure 507 * @offset: Address offset from the base address of Axi Ethernet core 508 * 509 * Return: The contents of the Axi Ethernet register 510 * 511 * This function returns the contents of the corresponding register. 512 */ 513 static inline u32 axienet_ior(struct axienet_local *lp, off_t offset) 514 { 515 return ioread32(lp->regs + offset); 516 } 517 518 static inline u32 axinet_ior_read_mcr(struct axienet_local *lp) 519 { 520 return axienet_ior(lp, XAE_MDIO_MCR_OFFSET); 521 } 522 523 static inline void axienet_lock_mii(struct axienet_local *lp) 524 { 525 if (lp->mii_bus) 526 mutex_lock(&lp->mii_bus->mdio_lock); 527 } 528 529 static inline void axienet_unlock_mii(struct axienet_local *lp) 530 { 531 if (lp->mii_bus) 532 mutex_unlock(&lp->mii_bus->mdio_lock); 533 } 534 535 /** 536 * axienet_iow - Memory mapped Axi Ethernet register write 537 * @lp: Pointer to axienet local structure 538 * @offset: Address offset from the base address of Axi Ethernet core 539 * @value: Value to be written into the Axi Ethernet register 540 * 541 * This function writes the desired value into the corresponding Axi Ethernet 542 * register. 543 */ 544 static inline void axienet_iow(struct axienet_local *lp, off_t offset, 545 u32 value) 546 { 547 iowrite32(value, lp->regs + offset); 548 } 549 550 /** 551 * axienet_dma_out32 - Memory mapped Axi DMA register write. 552 * @lp: Pointer to axienet local structure 553 * @reg: Address offset from the base address of the Axi DMA core 554 * @value: Value to be written into the Axi DMA register 555 * 556 * This function writes the desired value into the corresponding Axi DMA 557 * register. 558 */ 559 560 static inline void axienet_dma_out32(struct axienet_local *lp, 561 off_t reg, u32 value) 562 { 563 iowrite32(value, lp->dma_regs + reg); 564 } 565 566 #if defined(CONFIG_64BIT) && defined(iowrite64) 567 /** 568 * axienet_dma_out64 - Memory mapped Axi DMA register write. 569 * @lp: Pointer to axienet local structure 570 * @reg: Address offset from the base address of the Axi DMA core 571 * @value: Value to be written into the Axi DMA register 572 * 573 * This function writes the desired value into the corresponding Axi DMA 574 * register. 575 */ 576 static inline void axienet_dma_out64(struct axienet_local *lp, 577 off_t reg, u64 value) 578 { 579 iowrite64(value, lp->dma_regs + reg); 580 } 581 582 static inline void axienet_dma_out_addr(struct axienet_local *lp, off_t reg, 583 dma_addr_t addr) 584 { 585 if (lp->features & XAE_FEATURE_DMA_64BIT) 586 axienet_dma_out64(lp, reg, addr); 587 else 588 axienet_dma_out32(lp, reg, lower_32_bits(addr)); 589 } 590 591 #else /* CONFIG_64BIT */ 592 593 static inline void axienet_dma_out_addr(struct axienet_local *lp, off_t reg, 594 dma_addr_t addr) 595 { 596 axienet_dma_out32(lp, reg, lower_32_bits(addr)); 597 } 598 599 #endif /* CONFIG_64BIT */ 600 601 /* Function prototypes visible in xilinx_axienet_mdio.c for other files */ 602 int axienet_mdio_enable(struct axienet_local *lp); 603 void axienet_mdio_disable(struct axienet_local *lp); 604 int axienet_mdio_setup(struct axienet_local *lp); 605 void axienet_mdio_teardown(struct axienet_local *lp); 606 607 #endif /* XILINX_AXI_ENET_H */ 608