| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* |
| * Definitions for Xilinx Axi Ethernet device driver. |
| * |
| * Copyright (c) 2009 Secret Lab Technologies, Ltd. |
| * Copyright (c) 2010 - 2012 Xilinx, Inc. All rights reserved. |
| */ |
| |
| #ifndef XILINX_AXIENET_H |
| #define XILINX_AXIENET_H |
| |
| #include <linux/netdevice.h> |
| #include <linux/spinlock.h> |
| #include <linux/interrupt.h> |
| #include <linux/if_vlan.h> |
| #include <linux/phylink.h> |
| #include <linux/skbuff.h> |
| |
| /* Packet size info */ |
| #define XAE_HDR_SIZE 14 /* Size of Ethernet header */ |
| #define XAE_TRL_SIZE 4 /* Size of Ethernet trailer (FCS) */ |
| #define XAE_MTU 1500 /* Max MTU of an Ethernet frame */ |
| #define XAE_JUMBO_MTU 9000 /* Max MTU of a jumbo Eth. frame */ |
| |
| #define XAE_MAX_FRAME_SIZE (XAE_MTU + XAE_HDR_SIZE + XAE_TRL_SIZE) |
| #define XAE_MAX_VLAN_FRAME_SIZE (XAE_MTU + VLAN_ETH_HLEN + XAE_TRL_SIZE) |
| #define XAE_MAX_JUMBO_FRAME_SIZE (XAE_JUMBO_MTU + XAE_HDR_SIZE + XAE_TRL_SIZE) |
| |
| /* Configuration options */ |
| |
| /* Accept all incoming packets. Default: disabled (cleared) */ |
| #define XAE_OPTION_PROMISC (1 << 0) |
| |
| /* Jumbo frame support for Tx & Rx. Default: disabled (cleared) */ |
| #define XAE_OPTION_JUMBO (1 << 1) |
| |
| /* VLAN Rx & Tx frame support. Default: disabled (cleared) */ |
| #define XAE_OPTION_VLAN (1 << 2) |
| |
| /* Enable recognition of flow control frames on Rx. Default: enabled (set) */ |
| #define XAE_OPTION_FLOW_CONTROL (1 << 4) |
| |
| /* Strip FCS and PAD from incoming frames. Note: PAD from VLAN frames is not |
| * stripped. Default: disabled (set) |
| */ |
| #define XAE_OPTION_FCS_STRIP (1 << 5) |
| |
| /* Generate FCS field and add PAD automatically for outgoing frames. |
| * Default: enabled (set) |
| */ |
| #define XAE_OPTION_FCS_INSERT (1 << 6) |
| |
| /* Enable Length/Type error checking for incoming frames. When this option is |
| * set, the MAC will filter frames that have a mismatched type/length field |
| * and if XAE_OPTION_REPORT_RXERR is set, the user is notified when these |
| * types of frames are encountered. When this option is cleared, the MAC will |
| * allow these types of frames to be received. Default: enabled (set) |
| */ |
| #define XAE_OPTION_LENTYPE_ERR (1 << 7) |
| |
| /* Enable the transmitter. Default: enabled (set) */ |
| #define XAE_OPTION_TXEN (1 << 11) |
| |
| /* Enable the receiver. Default: enabled (set) */ |
| #define XAE_OPTION_RXEN (1 << 12) |
| |
| /* Default options set when device is initialized or reset */ |
| #define XAE_OPTION_DEFAULTS \ |
| (XAE_OPTION_TXEN | \ |
| XAE_OPTION_FLOW_CONTROL | \ |
| XAE_OPTION_RXEN) |
| |
| /* Axi DMA Register definitions */ |
| |
| #define XAXIDMA_TX_CR_OFFSET 0x00000000 /* Channel control */ |
| #define XAXIDMA_TX_SR_OFFSET 0x00000004 /* Status */ |
| #define XAXIDMA_TX_CDESC_OFFSET 0x00000008 /* Current descriptor pointer */ |
| #define XAXIDMA_TX_TDESC_OFFSET 0x00000010 /* Tail descriptor pointer */ |
| |
| #define XAXIDMA_RX_CR_OFFSET 0x00000030 /* Channel control */ |
| #define XAXIDMA_RX_SR_OFFSET 0x00000034 /* Status */ |
| #define XAXIDMA_RX_CDESC_OFFSET 0x00000038 /* Current descriptor pointer */ |
| #define XAXIDMA_RX_TDESC_OFFSET 0x00000040 /* Tail descriptor pointer */ |
| |
| #define XAXIDMA_CR_RUNSTOP_MASK 0x00000001 /* Start/stop DMA channel */ |
| #define XAXIDMA_CR_RESET_MASK 0x00000004 /* Reset DMA engine */ |
| |
| #define XAXIDMA_SR_HALT_MASK 0x00000001 /* Indicates DMA channel halted */ |
| |
| #define XAXIDMA_BD_NDESC_OFFSET 0x00 /* Next descriptor pointer */ |
| #define XAXIDMA_BD_BUFA_OFFSET 0x08 /* Buffer address */ |
| #define XAXIDMA_BD_CTRL_LEN_OFFSET 0x18 /* Control/buffer length */ |
| #define XAXIDMA_BD_STS_OFFSET 0x1C /* Status */ |
| #define XAXIDMA_BD_USR0_OFFSET 0x20 /* User IP specific word0 */ |
| #define XAXIDMA_BD_USR1_OFFSET 0x24 /* User IP specific word1 */ |
| #define XAXIDMA_BD_USR2_OFFSET 0x28 /* User IP specific word2 */ |
| #define XAXIDMA_BD_USR3_OFFSET 0x2C /* User IP specific word3 */ |
| #define XAXIDMA_BD_USR4_OFFSET 0x30 /* User IP specific word4 */ |
| #define XAXIDMA_BD_ID_OFFSET 0x34 /* Sw ID */ |
| #define XAXIDMA_BD_HAS_STSCNTRL_OFFSET 0x38 /* Whether has stscntrl strm */ |
| #define XAXIDMA_BD_HAS_DRE_OFFSET 0x3C /* Whether has DRE */ |
| |
| #define XAXIDMA_BD_HAS_DRE_SHIFT 8 /* Whether has DRE shift */ |
| #define XAXIDMA_BD_HAS_DRE_MASK 0xF00 /* Whether has DRE mask */ |
| #define XAXIDMA_BD_WORDLEN_MASK 0xFF /* Whether has DRE mask */ |
| |
| #define XAXIDMA_BD_CTRL_LENGTH_MASK 0x007FFFFF /* Requested len */ |
| #define XAXIDMA_BD_CTRL_TXSOF_MASK 0x08000000 /* First tx packet */ |
| #define XAXIDMA_BD_CTRL_TXEOF_MASK 0x04000000 /* Last tx packet */ |
| #define XAXIDMA_BD_CTRL_ALL_MASK 0x0C000000 /* All control bits */ |
| |
| #define XAXIDMA_DELAY_MASK 0xFF000000 /* Delay timeout counter */ |
| #define XAXIDMA_COALESCE_MASK 0x00FF0000 /* Coalesce counter */ |
| |
| #define XAXIDMA_DELAY_SHIFT 24 |
| #define XAXIDMA_COALESCE_SHIFT 16 |
| |
| #define XAXIDMA_IRQ_IOC_MASK 0x00001000 /* Completion intr */ |
| #define XAXIDMA_IRQ_DELAY_MASK 0x00002000 /* Delay interrupt */ |
| #define XAXIDMA_IRQ_ERROR_MASK 0x00004000 /* Error interrupt */ |
| #define XAXIDMA_IRQ_ALL_MASK 0x00007000 /* All interrupts */ |
| |
| /* Default TX/RX Threshold and delay timer values for SGDMA mode */ |
| #define XAXIDMA_DFT_TX_THRESHOLD 24 |
| #define XAXIDMA_DFT_TX_USEC 50 |
| #define XAXIDMA_DFT_RX_THRESHOLD 1 |
| #define XAXIDMA_DFT_RX_USEC 50 |
| |
| #define XAXIDMA_BD_CTRL_TXSOF_MASK 0x08000000 /* First tx packet */ |
| #define XAXIDMA_BD_CTRL_TXEOF_MASK 0x04000000 /* Last tx packet */ |
| #define XAXIDMA_BD_CTRL_ALL_MASK 0x0C000000 /* All control bits */ |
| |
| #define XAXIDMA_BD_STS_ACTUAL_LEN_MASK 0x007FFFFF /* Actual len */ |
| #define XAXIDMA_BD_STS_COMPLETE_MASK 0x80000000 /* Completed */ |
| #define XAXIDMA_BD_STS_DEC_ERR_MASK 0x40000000 /* Decode error */ |
| #define XAXIDMA_BD_STS_SLV_ERR_MASK 0x20000000 /* Slave error */ |
| #define XAXIDMA_BD_STS_INT_ERR_MASK 0x10000000 /* Internal err */ |
| #define XAXIDMA_BD_STS_ALL_ERR_MASK 0x70000000 /* All errors */ |
| #define XAXIDMA_BD_STS_RXSOF_MASK 0x08000000 /* First rx pkt */ |
| #define XAXIDMA_BD_STS_RXEOF_MASK 0x04000000 /* Last rx pkt */ |
| #define XAXIDMA_BD_STS_ALL_MASK 0xFC000000 /* All status bits */ |
| |
| #define XAXIDMA_BD_MINIMUM_ALIGNMENT 0x40 |
| |
| /* Axi Ethernet registers definition */ |
| #define XAE_RAF_OFFSET 0x00000000 /* Reset and Address filter */ |
| #define XAE_TPF_OFFSET 0x00000004 /* Tx Pause Frame */ |
| #define XAE_IFGP_OFFSET 0x00000008 /* Tx Inter-frame gap adjustment*/ |
| #define XAE_IS_OFFSET 0x0000000C /* Interrupt status */ |
| #define XAE_IP_OFFSET 0x00000010 /* Interrupt pending */ |
| #define XAE_IE_OFFSET 0x00000014 /* Interrupt enable */ |
| #define XAE_TTAG_OFFSET 0x00000018 /* Tx VLAN TAG */ |
| #define XAE_RTAG_OFFSET 0x0000001C /* Rx VLAN TAG */ |
| #define XAE_UAWL_OFFSET 0x00000020 /* Unicast address word lower */ |
| #define XAE_UAWU_OFFSET 0x00000024 /* Unicast address word upper */ |
| #define XAE_TPID0_OFFSET 0x00000028 /* VLAN TPID0 register */ |
| #define XAE_TPID1_OFFSET 0x0000002C /* VLAN TPID1 register */ |
| #define XAE_PPST_OFFSET 0x00000030 /* PCS PMA Soft Temac Status Reg */ |
| #define XAE_RCW0_OFFSET 0x00000400 /* Rx Configuration Word 0 */ |
| #define XAE_RCW1_OFFSET 0x00000404 /* Rx Configuration Word 1 */ |
| #define XAE_TC_OFFSET 0x00000408 /* Tx Configuration */ |
| #define XAE_FCC_OFFSET 0x0000040C /* Flow Control Configuration */ |
| #define XAE_EMMC_OFFSET 0x00000410 /* EMAC mode configuration */ |
| #define XAE_PHYC_OFFSET 0x00000414 /* RGMII/SGMII configuration */ |
| #define XAE_ID_OFFSET 0x000004F8 /* Identification register */ |
| #define XAE_MDIO_MC_OFFSET 0x00000500 /* MII Management Config */ |
| #define XAE_MDIO_MCR_OFFSET 0x00000504 /* MII Management Control */ |
| #define XAE_MDIO_MWD_OFFSET 0x00000508 /* MII Management Write Data */ |
| #define XAE_MDIO_MRD_OFFSET 0x0000050C /* MII Management Read Data */ |
| #define XAE_UAW0_OFFSET 0x00000700 /* Unicast address word 0 */ |
| #define XAE_UAW1_OFFSET 0x00000704 /* Unicast address word 1 */ |
| #define XAE_FMI_OFFSET 0x00000708 /* Filter Mask Index */ |
| #define XAE_AF0_OFFSET 0x00000710 /* Address Filter 0 */ |
| #define XAE_AF1_OFFSET 0x00000714 /* Address Filter 1 */ |
| |
| #define XAE_TX_VLAN_DATA_OFFSET 0x00004000 /* TX VLAN data table address */ |
| #define XAE_RX_VLAN_DATA_OFFSET 0x00008000 /* RX VLAN data table address */ |
| #define XAE_MCAST_TABLE_OFFSET 0x00020000 /* Multicast table address */ |
| |
| /* Bit Masks for Axi Ethernet RAF register */ |
| /* Reject receive multicast destination address */ |
| #define XAE_RAF_MCSTREJ_MASK 0x00000002 |
| /* Reject receive broadcast destination address */ |
| #define XAE_RAF_BCSTREJ_MASK 0x00000004 |
| #define XAE_RAF_TXVTAGMODE_MASK 0x00000018 /* Tx VLAN TAG mode */ |
| #define XAE_RAF_RXVTAGMODE_MASK 0x00000060 /* Rx VLAN TAG mode */ |
| #define XAE_RAF_TXVSTRPMODE_MASK 0x00000180 /* Tx VLAN STRIP mode */ |
| #define XAE_RAF_RXVSTRPMODE_MASK 0x00000600 /* Rx VLAN STRIP mode */ |
| #define XAE_RAF_NEWFNCENBL_MASK 0x00000800 /* New function mode */ |
| /* Extended Multicast Filtering mode */ |
| #define XAE_RAF_EMULTIFLTRENBL_MASK 0x00001000 |
| #define XAE_RAF_STATSRST_MASK 0x00002000 /* Stats. Counter Reset */ |
| #define XAE_RAF_RXBADFRMEN_MASK 0x00004000 /* Recv Bad Frame Enable */ |
| #define XAE_RAF_TXVTAGMODE_SHIFT 3 /* Tx Tag mode shift bits */ |
| #define XAE_RAF_RXVTAGMODE_SHIFT 5 /* Rx Tag mode shift bits */ |
| #define XAE_RAF_TXVSTRPMODE_SHIFT 7 /* Tx strip mode shift bits*/ |
| #define XAE_RAF_RXVSTRPMODE_SHIFT 9 /* Rx Strip mode shift bits*/ |
| |
| /* Bit Masks for Axi Ethernet TPF and IFGP registers */ |
| #define XAE_TPF_TPFV_MASK 0x0000FFFF /* Tx pause frame value */ |
| /* Transmit inter-frame gap adjustment value */ |
| #define XAE_IFGP0_IFGP_MASK 0x0000007F |
| |
| /* Bit Masks for Axi Ethernet IS, IE and IP registers, Same masks apply |
| * for all 3 registers. |
| */ |
| /* Hard register access complete */ |
| #define XAE_INT_HARDACSCMPLT_MASK 0x00000001 |
| /* Auto negotiation complete */ |
| #define XAE_INT_AUTONEG_MASK 0x00000002 |
| #define XAE_INT_RXCMPIT_MASK 0x00000004 /* Rx complete */ |
| #define XAE_INT_RXRJECT_MASK 0x00000008 /* Rx frame rejected */ |
| #define XAE_INT_RXFIFOOVR_MASK 0x00000010 /* Rx fifo overrun */ |
| #define XAE_INT_TXCMPIT_MASK 0x00000020 /* Tx complete */ |
| #define XAE_INT_RXDCMLOCK_MASK 0x00000040 /* Rx Dcm Lock */ |
| #define XAE_INT_MGTRDY_MASK 0x00000080 /* MGT clock Lock */ |
| #define XAE_INT_PHYRSTCMPLT_MASK 0x00000100 /* Phy Reset complete */ |
| #define XAE_INT_ALL_MASK 0x0000003F /* All the ints */ |
| |
| /* INT bits that indicate receive errors */ |
| #define XAE_INT_RECV_ERROR_MASK \ |
| (XAE_INT_RXRJECT_MASK | XAE_INT_RXFIFOOVR_MASK) |
| |
| /* Bit masks for Axi Ethernet VLAN TPID Word 0 register */ |
| #define XAE_TPID_0_MASK 0x0000FFFF /* TPID 0 */ |
| #define XAE_TPID_1_MASK 0xFFFF0000 /* TPID 1 */ |
| |
| /* Bit masks for Axi Ethernet VLAN TPID Word 1 register */ |
| #define XAE_TPID_2_MASK 0x0000FFFF /* TPID 0 */ |
| #define XAE_TPID_3_MASK 0xFFFF0000 /* TPID 1 */ |
| |
| /* Bit masks for Axi Ethernet RCW1 register */ |
| #define XAE_RCW1_RST_MASK 0x80000000 /* Reset */ |
| #define XAE_RCW1_JUM_MASK 0x40000000 /* Jumbo frame enable */ |
| /* In-Band FCS enable (FCS not stripped) */ |
| #define XAE_RCW1_FCS_MASK 0x20000000 |
| #define XAE_RCW1_RX_MASK 0x10000000 /* Receiver enable */ |
| #define XAE_RCW1_VLAN_MASK 0x08000000 /* VLAN frame enable */ |
| /* Length/type field valid check disable */ |
| #define XAE_RCW1_LT_DIS_MASK 0x02000000 |
| /* Control frame Length check disable */ |
| #define XAE_RCW1_CL_DIS_MASK 0x01000000 |
| /* Pause frame source address bits [47:32]. Bits [31:0] are |
| * stored in register RCW0 |
| */ |
| #define XAE_RCW1_PAUSEADDR_MASK 0x0000FFFF |
| |
| /* Bit masks for Axi Ethernet TC register */ |
| #define XAE_TC_RST_MASK 0x80000000 /* Reset */ |
| #define XAE_TC_JUM_MASK 0x40000000 /* Jumbo frame enable */ |
| /* In-Band FCS enable (FCS not generated) */ |
| #define XAE_TC_FCS_MASK 0x20000000 |
| #define XAE_TC_TX_MASK 0x10000000 /* Transmitter enable */ |
| #define XAE_TC_VLAN_MASK 0x08000000 /* VLAN frame enable */ |
| /* Inter-frame gap adjustment enable */ |
| #define XAE_TC_IFG_MASK 0x02000000 |
| |
| /* Bit masks for Axi Ethernet FCC register */ |
| #define XAE_FCC_FCRX_MASK 0x20000000 /* Rx flow control enable */ |
| #define XAE_FCC_FCTX_MASK 0x40000000 /* Tx flow control enable */ |
| |
| /* Bit masks for Axi Ethernet EMMC register */ |
| #define XAE_EMMC_LINKSPEED_MASK 0xC0000000 /* Link speed */ |
| #define XAE_EMMC_RGMII_MASK 0x20000000 /* RGMII mode enable */ |
| #define XAE_EMMC_SGMII_MASK 0x10000000 /* SGMII mode enable */ |
| #define XAE_EMMC_GPCS_MASK 0x08000000 /* 1000BaseX mode enable */ |
| #define XAE_EMMC_HOST_MASK 0x04000000 /* Host interface enable */ |
| #define XAE_EMMC_TX16BIT 0x02000000 /* 16 bit Tx client enable */ |
| #define XAE_EMMC_RX16BIT 0x01000000 /* 16 bit Rx client enable */ |
| #define XAE_EMMC_LINKSPD_10 0x00000000 /* Link Speed mask for 10 Mbit */ |
| #define XAE_EMMC_LINKSPD_100 0x40000000 /* Link Speed mask for 100 Mbit */ |
| #define XAE_EMMC_LINKSPD_1000 0x80000000 /* Link Speed mask for 1000 Mbit */ |
| |
| /* Bit masks for Axi Ethernet PHYC register */ |
| #define XAE_PHYC_SGMIILINKSPEED_MASK 0xC0000000 /* SGMII link speed mask*/ |
| #define XAE_PHYC_RGMIILINKSPEED_MASK 0x0000000C /* RGMII link speed */ |
| #define XAE_PHYC_RGMIIHD_MASK 0x00000002 /* RGMII Half-duplex */ |
| #define XAE_PHYC_RGMIILINK_MASK 0x00000001 /* RGMII link status */ |
| #define XAE_PHYC_RGLINKSPD_10 0x00000000 /* RGMII link 10 Mbit */ |
| #define XAE_PHYC_RGLINKSPD_100 0x00000004 /* RGMII link 100 Mbit */ |
| #define XAE_PHYC_RGLINKSPD_1000 0x00000008 /* RGMII link 1000 Mbit */ |
| #define XAE_PHYC_SGLINKSPD_10 0x00000000 /* SGMII link 10 Mbit */ |
| #define XAE_PHYC_SGLINKSPD_100 0x40000000 /* SGMII link 100 Mbit */ |
| #define XAE_PHYC_SGLINKSPD_1000 0x80000000 /* SGMII link 1000 Mbit */ |
| |
| /* Bit masks for Axi Ethernet MDIO interface MC register */ |
| #define XAE_MDIO_MC_MDIOEN_MASK 0x00000040 /* MII management enable */ |
| #define XAE_MDIO_MC_CLOCK_DIVIDE_MAX 0x3F /* Maximum MDIO divisor */ |
| |
| /* Bit masks for Axi Ethernet MDIO interface MCR register */ |
| #define XAE_MDIO_MCR_PHYAD_MASK 0x1F000000 /* Phy Address Mask */ |
| #define XAE_MDIO_MCR_PHYAD_SHIFT 24 /* Phy Address Shift */ |
| #define XAE_MDIO_MCR_REGAD_MASK 0x001F0000 /* Reg Address Mask */ |
| #define XAE_MDIO_MCR_REGAD_SHIFT 16 /* Reg Address Shift */ |
| #define XAE_MDIO_MCR_OP_MASK 0x0000C000 /* Operation Code Mask */ |
| #define XAE_MDIO_MCR_OP_SHIFT 13 /* Operation Code Shift */ |
| #define XAE_MDIO_MCR_OP_READ_MASK 0x00008000 /* Op Code Read Mask */ |
| #define XAE_MDIO_MCR_OP_WRITE_MASK 0x00004000 /* Op Code Write Mask */ |
| #define XAE_MDIO_MCR_INITIATE_MASK 0x00000800 /* Ready Mask */ |
| #define XAE_MDIO_MCR_READY_MASK 0x00000080 /* Ready Mask */ |
| |
| /* Bit masks for Axi Ethernet MDIO interface MIS, MIP, MIE, MIC registers */ |
| #define XAE_MDIO_INT_MIIM_RDY_MASK 0x00000001 /* MIIM Interrupt */ |
| |
| /* Bit masks for Axi Ethernet UAW1 register */ |
| /* Station address bits [47:32]; Station address |
| * bits [31:0] are stored in register UAW0 |
| */ |
| #define XAE_UAW1_UNICASTADDR_MASK 0x0000FFFF |
| |
| /* Bit masks for Axi Ethernet FMI register */ |
| #define XAE_FMI_PM_MASK 0x80000000 /* Promis. mode enable */ |
| #define XAE_FMI_IND_MASK 0x00000003 /* Index Mask */ |
| |
| #define XAE_MDIO_DIV_DFT 29 /* Default MDIO clock divisor */ |
| |
| /* Defines for different options for C_PHY_TYPE parameter in Axi Ethernet IP */ |
| #define XAE_PHY_TYPE_MII 0 |
| #define XAE_PHY_TYPE_GMII 1 |
| #define XAE_PHY_TYPE_RGMII_1_3 2 |
| #define XAE_PHY_TYPE_RGMII_2_0 3 |
| #define XAE_PHY_TYPE_SGMII 4 |
| #define XAE_PHY_TYPE_1000BASE_X 5 |
| |
| /* Total number of entries in the hardware multicast table. */ |
| #define XAE_MULTICAST_CAM_TABLE_NUM 4 |
| |
| /* Axi Ethernet Synthesis features */ |
| #define XAE_FEATURE_PARTIAL_RX_CSUM (1 << 0) |
| #define XAE_FEATURE_PARTIAL_TX_CSUM (1 << 1) |
| #define XAE_FEATURE_FULL_RX_CSUM (1 << 2) |
| #define XAE_FEATURE_FULL_TX_CSUM (1 << 3) |
| #define XAE_FEATURE_DMA_64BIT (1 << 4) |
| |
| #define XAE_NO_CSUM_OFFLOAD 0 |
| |
| #define XAE_FULL_CSUM_STATUS_MASK 0x00000038 |
| #define XAE_IP_UDP_CSUM_VALIDATED 0x00000003 |
| #define XAE_IP_TCP_CSUM_VALIDATED 0x00000002 |
| |
| #define DELAY_OF_ONE_MILLISEC 1000 |
| |
| /* Xilinx PCS/PMA PHY register for switching 1000BaseX or SGMII */ |
| #define XLNX_MII_STD_SELECT_REG 0x11 |
| #define XLNX_MII_STD_SELECT_SGMII BIT(0) |
| |
| /** |
| * struct axidma_bd - Axi Dma buffer descriptor layout |
| * @next: MM2S/S2MM Next Descriptor Pointer |
| * @next_msb: MM2S/S2MM Next Descriptor Pointer (high 32 bits) |
| * @phys: MM2S/S2MM Buffer Address |
| * @phys_msb: MM2S/S2MM Buffer Address (high 32 bits) |
| * @reserved3: Reserved and not used |
| * @reserved4: Reserved and not used |
| * @cntrl: MM2S/S2MM Control value |
| * @status: MM2S/S2MM Status value |
| * @app0: MM2S/S2MM User Application Field 0. |
| * @app1: MM2S/S2MM User Application Field 1. |
| * @app2: MM2S/S2MM User Application Field 2. |
| * @app3: MM2S/S2MM User Application Field 3. |
| * @app4: MM2S/S2MM User Application Field 4. |
| */ |
| struct axidma_bd { |
| u32 next; /* Physical address of next buffer descriptor */ |
| u32 next_msb; /* high 32 bits for IP >= v7.1, reserved on older IP */ |
| u32 phys; |
| u32 phys_msb; /* for IP >= v7.1, reserved for older IP */ |
| u32 reserved3; |
| u32 reserved4; |
| u32 cntrl; |
| u32 status; |
| u32 app0; |
| u32 app1; /* TX start << 16 | insert */ |
| u32 app2; /* TX csum seed */ |
| u32 app3; |
| u32 app4; /* Last field used by HW */ |
| struct sk_buff *skb; |
| } __aligned(XAXIDMA_BD_MINIMUM_ALIGNMENT); |
| |
| #define XAE_NUM_MISC_CLOCKS 3 |
| |
| /** |
| * struct skbuf_dma_descriptor - skb for each dma descriptor |
| * @sgl: Pointer for sglist. |
| * @desc: Pointer to dma descriptor. |
| * @dma_address: dma address of sglist. |
| * @skb: Pointer to SKB transferred using DMA |
| * @sg_len: number of entries in the sglist. |
| */ |
| struct skbuf_dma_descriptor { |
| struct scatterlist sgl[MAX_SKB_FRAGS + 1]; |
| struct dma_async_tx_descriptor *desc; |
| dma_addr_t dma_address; |
| struct sk_buff *skb; |
| int sg_len; |
| }; |
| |
| /** |
| * struct axienet_local - axienet private per device data |
| * @ndev: Pointer for net_device to which it will be attached. |
| * @dev: Pointer to device structure |
| * @phy_node: Pointer to device node structure |
| * @phylink: Pointer to phylink instance |
| * @phylink_config: phylink configuration settings |
| * @pcs_phy: Reference to PCS/PMA PHY if used |
| * @pcs: phylink pcs structure for PCS PHY |
| * @switch_x_sgmii: Whether switchable 1000BaseX/SGMII mode is enabled in the core |
| * @axi_clk: AXI4-Lite bus clock |
| * @misc_clks: Misc ethernet clocks (AXI4-Stream, Ref, MGT clocks) |
| * @mii_bus: Pointer to MII bus structure |
| * @mii_clk_div: MII bus clock divider value |
| * @regs_start: Resource start for axienet device addresses |
| * @regs: Base address for the axienet_local device address space |
| * @dma_regs: Base address for the axidma device address space |
| * @napi_rx: NAPI RX control structure |
| * @rx_dma_cr: Nominal content of RX DMA control register |
| * @rx_bd_v: Virtual address of the RX buffer descriptor ring |
| * @rx_bd_p: Physical address(start address) of the RX buffer descr. ring |
| * @rx_bd_num: Size of RX buffer descriptor ring |
| * @rx_bd_ci: Stores the index of the Rx buffer descriptor in the ring being |
| * accessed currently. |
| * @rx_packets: RX packet count for statistics |
| * @rx_bytes: RX byte count for statistics |
| * @rx_stat_sync: Synchronization object for RX stats |
| * @napi_tx: NAPI TX control structure |
| * @tx_dma_cr: Nominal content of TX DMA control register |
| * @tx_bd_v: Virtual address of the TX buffer descriptor ring |
| * @tx_bd_p: Physical address(start address) of the TX buffer descr. ring |
| * @tx_bd_num: Size of TX buffer descriptor ring |
| * @tx_bd_ci: Stores the next Tx buffer descriptor in the ring that may be |
| * complete. Only updated at runtime by TX NAPI poll. |
| * @tx_bd_tail: Stores the index of the next Tx buffer descriptor in the ring |
| * to be populated. |
| * @tx_packets: TX packet count for statistics |
| * @tx_bytes: TX byte count for statistics |
| * @tx_stat_sync: Synchronization object for TX stats |
| * @dma_err_task: Work structure to process Axi DMA errors |
| * @tx_irq: Axidma TX IRQ number |
| * @rx_irq: Axidma RX IRQ number |
| * @eth_irq: Ethernet core IRQ number |
| * @phy_mode: Phy type to identify between MII/GMII/RGMII/SGMII/1000 Base-X |
| * @options: AxiEthernet option word |
| * @features: Stores the extended features supported by the axienet hw |
| * @max_frm_size: Stores the maximum size of the frame that can be that |
| * Txed/Rxed in the existing hardware. If jumbo option is |
| * supported, the maximum frame size would be 9k. Else it is |
| * 1522 bytes (assuming support for basic VLAN) |
| * @rxmem: Stores rx memory size for jumbo frame handling. |
| * @csum_offload_on_tx_path: Stores the checksum selection on TX side. |
| * @csum_offload_on_rx_path: Stores the checksum selection on RX side. |
| * @coalesce_count_rx: Store the irq coalesce on RX side. |
| * @coalesce_usec_rx: IRQ coalesce delay for RX |
| * @coalesce_count_tx: Store the irq coalesce on TX side. |
| * @coalesce_usec_tx: IRQ coalesce delay for TX |
| * @use_dmaengine: flag to check dmaengine framework usage. |
| * @tx_chan: TX DMA channel. |
| * @rx_chan: RX DMA channel. |
| * @tx_skb_ring: Pointer to TX skb ring buffer array. |
| * @rx_skb_ring: Pointer to RX skb ring buffer array. |
| * @tx_ring_head: TX skb ring buffer head index. |
| * @tx_ring_tail: TX skb ring buffer tail index. |
| * @rx_ring_head: RX skb ring buffer head index. |
| * @rx_ring_tail: RX skb ring buffer tail index. |
| */ |
| struct axienet_local { |
| struct net_device *ndev; |
| struct device *dev; |
| |
| struct phylink *phylink; |
| struct phylink_config phylink_config; |
| |
| struct mdio_device *pcs_phy; |
| struct phylink_pcs pcs; |
| |
| bool switch_x_sgmii; |
| |
| struct clk *axi_clk; |
| struct clk_bulk_data misc_clks[XAE_NUM_MISC_CLOCKS]; |
| |
| struct mii_bus *mii_bus; |
| u8 mii_clk_div; |
| |
| resource_size_t regs_start; |
| void __iomem *regs; |
| void __iomem *dma_regs; |
| |
| struct napi_struct napi_rx; |
| u32 rx_dma_cr; |
| struct axidma_bd *rx_bd_v; |
| dma_addr_t rx_bd_p; |
| u32 rx_bd_num; |
| u32 rx_bd_ci; |
| u64_stats_t rx_packets; |
| u64_stats_t rx_bytes; |
| struct u64_stats_sync rx_stat_sync; |
| |
| struct napi_struct napi_tx; |
| u32 tx_dma_cr; |
| struct axidma_bd *tx_bd_v; |
| dma_addr_t tx_bd_p; |
| u32 tx_bd_num; |
| u32 tx_bd_ci; |
| u32 tx_bd_tail; |
| u64_stats_t tx_packets; |
| u64_stats_t tx_bytes; |
| struct u64_stats_sync tx_stat_sync; |
| |
| struct work_struct dma_err_task; |
| |
| int tx_irq; |
| int rx_irq; |
| int eth_irq; |
| phy_interface_t phy_mode; |
| |
| u32 options; |
| u32 features; |
| |
| u32 max_frm_size; |
| u32 rxmem; |
| |
| int csum_offload_on_tx_path; |
| int csum_offload_on_rx_path; |
| |
| u32 coalesce_count_rx; |
| u32 coalesce_usec_rx; |
| u32 coalesce_count_tx; |
| u32 coalesce_usec_tx; |
| u8 use_dmaengine; |
| struct dma_chan *tx_chan; |
| struct dma_chan *rx_chan; |
| struct skbuf_dma_descriptor **tx_skb_ring; |
| struct skbuf_dma_descriptor **rx_skb_ring; |
| int tx_ring_head; |
| int tx_ring_tail; |
| int rx_ring_head; |
| int rx_ring_tail; |
| }; |
| |
| /** |
| * struct axiethernet_option - Used to set axi ethernet hardware options |
| * @opt: Option to be set. |
| * @reg: Register offset to be written for setting the option |
| * @m_or: Mask to be ORed for setting the option in the register |
| */ |
| struct axienet_option { |
| u32 opt; |
| u32 reg; |
| u32 m_or; |
| }; |
| |
| /** |
| * axienet_ior - Memory mapped Axi Ethernet register read |
| * @lp: Pointer to axienet local structure |
| * @offset: Address offset from the base address of Axi Ethernet core |
| * |
| * Return: The contents of the Axi Ethernet register |
| * |
| * This function returns the contents of the corresponding register. |
| */ |
| static inline u32 axienet_ior(struct axienet_local *lp, off_t offset) |
| { |
| return ioread32(lp->regs + offset); |
| } |
| |
| static inline u32 axinet_ior_read_mcr(struct axienet_local *lp) |
| { |
| return axienet_ior(lp, XAE_MDIO_MCR_OFFSET); |
| } |
| |
| static inline void axienet_lock_mii(struct axienet_local *lp) |
| { |
| if (lp->mii_bus) |
| mutex_lock(&lp->mii_bus->mdio_lock); |
| } |
| |
| static inline void axienet_unlock_mii(struct axienet_local *lp) |
| { |
| if (lp->mii_bus) |
| mutex_unlock(&lp->mii_bus->mdio_lock); |
| } |
| |
| /** |
| * axienet_iow - Memory mapped Axi Ethernet register write |
| * @lp: Pointer to axienet local structure |
| * @offset: Address offset from the base address of Axi Ethernet core |
| * @value: Value to be written into the Axi Ethernet register |
| * |
| * This function writes the desired value into the corresponding Axi Ethernet |
| * register. |
| */ |
| static inline void axienet_iow(struct axienet_local *lp, off_t offset, |
| u32 value) |
| { |
| iowrite32(value, lp->regs + offset); |
| } |
| |
| /** |
| * axienet_dma_out32 - Memory mapped Axi DMA register write. |
| * @lp: Pointer to axienet local structure |
| * @reg: Address offset from the base address of the Axi DMA core |
| * @value: Value to be written into the Axi DMA register |
| * |
| * This function writes the desired value into the corresponding Axi DMA |
| * register. |
| */ |
| |
| static inline void axienet_dma_out32(struct axienet_local *lp, |
| off_t reg, u32 value) |
| { |
| iowrite32(value, lp->dma_regs + reg); |
| } |
| |
| #if defined(CONFIG_64BIT) && defined(iowrite64) |
| /** |
| * axienet_dma_out64 - Memory mapped Axi DMA register write. |
| * @lp: Pointer to axienet local structure |
| * @reg: Address offset from the base address of the Axi DMA core |
| * @value: Value to be written into the Axi DMA register |
| * |
| * This function writes the desired value into the corresponding Axi DMA |
| * register. |
| */ |
| static inline void axienet_dma_out64(struct axienet_local *lp, |
| off_t reg, u64 value) |
| { |
| iowrite64(value, lp->dma_regs + reg); |
| } |
| |
| static inline void axienet_dma_out_addr(struct axienet_local *lp, off_t reg, |
| dma_addr_t addr) |
| { |
| if (lp->features & XAE_FEATURE_DMA_64BIT) |
| axienet_dma_out64(lp, reg, addr); |
| else |
| axienet_dma_out32(lp, reg, lower_32_bits(addr)); |
| } |
| |
| #else /* CONFIG_64BIT */ |
| |
| static inline void axienet_dma_out_addr(struct axienet_local *lp, off_t reg, |
| dma_addr_t addr) |
| { |
| axienet_dma_out32(lp, reg, lower_32_bits(addr)); |
| } |
| |
| #endif /* CONFIG_64BIT */ |
| |
| /* Function prototypes visible in xilinx_axienet_mdio.c for other files */ |
| int axienet_mdio_setup(struct axienet_local *lp); |
| void axienet_mdio_teardown(struct axienet_local *lp); |
| |
| #endif /* XILINX_AXI_ENET_H */ |
