Quelle xilinx_axienet.h
Sprache: C
/* 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/dim.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 BIT(0 )
/* Jumbo frame support for Tx & Rx. Default: disabled (cleared) */
#define XAE_OPTION_JUMBO BIT(1 )
/* VLAN Rx & Tx frame support. Default: disabled (cleared) */
#define XAE_OPTION_VLAN BIT(2 )
/* Enable recognition of flow control frames on Rx. Default: enabled (set) */
#define XAE_OPTION_FLOW_CONTROL BIT(4 )
/* Strip FCS and PAD from incoming frames. Note: PAD from VLAN frames is not
* stripped . Default : disabled ( set )
*/
#define XAE_OPTION_FCS_STRIP BIT(5 )
/* Generate FCS field and add PAD automatically for outgoing frames.
* Default : enabled ( set )
*/
#define XAE_OPTION_FCS_INSERT BIT(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 BIT(7 )
/* Enable the transmitter. Default: enabled (set) */
#define XAE_OPTION_TXEN BIT(11 )
/* Enable the receiver. Default: enabled (set) */
#define XAE_OPTION_RXEN BIT(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 0 x00000000 /* Channel control */
#define XAXIDMA_TX_SR_OFFSET 0 x00000004 /* Status */
#define XAXIDMA_TX_CDESC_OFFSET 0 x00000008 /* Current descriptor pointer */
#define XAXIDMA_TX_TDESC_OFFSET 0 x00000010 /* Tail descriptor pointer */
#define XAXIDMA_RX_CR_OFFSET 0 x00000030 /* Channel control */
#define XAXIDMA_RX_SR_OFFSET 0 x00000034 /* Status */
#define XAXIDMA_RX_CDESC_OFFSET 0 x00000038 /* Current descriptor pointer */
#define XAXIDMA_RX_TDESC_OFFSET 0 x00000040 /* Tail descriptor pointer */
#define XAXIDMA_CR_RUNSTOP_MASK 0 x00000001 /* Start/stop DMA channel */
#define XAXIDMA_CR_RESET_MASK 0 x00000004 /* Reset DMA engine */
#define XAXIDMA_SR_HALT_MASK 0 x00000001 /* Indicates DMA channel halted */
#define XAXIDMA_BD_NDESC_OFFSET 0 x00 /* Next descriptor pointer */
#define XAXIDMA_BD_BUFA_OFFSET 0 x08 /* Buffer address */
#define XAXIDMA_BD_CTRL_LEN_OFFSET 0 x18 /* Control/buffer length */
#define XAXIDMA_BD_STS_OFFSET 0 x1C /* Status */
#define XAXIDMA_BD_USR0_OFFSET 0 x20 /* User IP specific word0 */
#define XAXIDMA_BD_USR1_OFFSET 0 x24 /* User IP specific word1 */
#define XAXIDMA_BD_USR2_OFFSET 0 x28 /* User IP specific word2 */
#define XAXIDMA_BD_USR3_OFFSET 0 x2C /* User IP specific word3 */
#define XAXIDMA_BD_USR4_OFFSET 0 x30 /* User IP specific word4 */
#define XAXIDMA_BD_ID_OFFSET 0 x34 /* Sw ID */
#define XAXIDMA_BD_HAS_STSCNTRL_OFFSET 0 x38 /* Whether has stscntrl strm */
#define XAXIDMA_BD_HAS_DRE_OFFSET 0 x3C /* Whether has DRE */
#define XAXIDMA_BD_HAS_DRE_SHIFT 8 /* Whether has DRE shift */
#define XAXIDMA_BD_HAS_DRE_MASK 0 xF00 /* Whether has DRE mask */
#define XAXIDMA_BD_WORDLEN_MASK 0 xFF /* Whether has DRE mask */
#define XAXIDMA_BD_CTRL_LENGTH_MASK 0 x007FFFFF /* Requested len */
#define XAXIDMA_BD_CTRL_TXSOF_MASK 0 x08000000 /* First tx packet */
#define XAXIDMA_BD_CTRL_TXEOF_MASK 0 x04000000 /* Last tx packet */
#define XAXIDMA_BD_CTRL_ALL_MASK 0 x0C000000 /* All control bits */
#define XAXIDMA_DELAY_MASK 0 xFF000000 /* Delay timeout counter */
#define XAXIDMA_COALESCE_MASK 0 x00FF0000 /* Coalesce counter */
#define XAXIDMA_IRQ_IOC_MASK 0 x00001000 /* Completion intr */
#define XAXIDMA_IRQ_DELAY_MASK 0 x00002000 /* Delay interrupt */
#define XAXIDMA_IRQ_ERROR_MASK 0 x00004000 /* Error interrupt */
#define XAXIDMA_IRQ_ALL_MASK 0 x00007000 /* All interrupts */
/* Constant to convert delay counts to microseconds */
#define XAXIDMA_DELAY_SCALE (125 ULL * USEC_PER_SEC)
/* 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_USEC 16
#define XAXIDMA_BD_CTRL_TXSOF_MASK 0 x08000000 /* First tx packet */
#define XAXIDMA_BD_CTRL_TXEOF_MASK 0 x04000000 /* Last tx packet */
#define XAXIDMA_BD_CTRL_ALL_MASK 0 x0C000000 /* All control bits */
#define XAXIDMA_BD_STS_ACTUAL_LEN_MASK 0 x007FFFFF /* Actual len */
#define XAXIDMA_BD_STS_COMPLETE_MASK 0 x80000000 /* Completed */
#define XAXIDMA_BD_STS_DEC_ERR_MASK 0 x40000000 /* Decode error */
#define XAXIDMA_BD_STS_SLV_ERR_MASK 0 x20000000 /* Slave error */
#define XAXIDMA_BD_STS_INT_ERR_MASK 0 x10000000 /* Internal err */
#define XAXIDMA_BD_STS_ALL_ERR_MASK 0 x70000000 /* All errors */
#define XAXIDMA_BD_STS_RXSOF_MASK 0 x08000000 /* First rx pkt */
#define XAXIDMA_BD_STS_RXEOF_MASK 0 x04000000 /* Last rx pkt */
#define XAXIDMA_BD_STS_ALL_MASK 0 xFC000000 /* All status bits */
#define XAXIDMA_BD_MINIMUM_ALIGNMENT 0 x40
/* Axi Ethernet registers definition */
#define XAE_RAF_OFFSET 0 x00000000 /* Reset and Address filter */
#define XAE_TPF_OFFSET 0 x00000004 /* Tx Pause Frame */
#define XAE_IFGP_OFFSET 0 x00000008 /* Tx Inter-frame gap adjustment*/
#define XAE_IS_OFFSET 0 x0000000C /* Interrupt status */
#define XAE_IP_OFFSET 0 x00000010 /* Interrupt pending */
#define XAE_IE_OFFSET 0 x00000014 /* Interrupt enable */
#define XAE_TTAG_OFFSET 0 x00000018 /* Tx VLAN TAG */
#define XAE_RTAG_OFFSET 0 x0000001C /* Rx VLAN TAG */
#define XAE_UAWL_OFFSET 0 x00000020 /* Unicast address word lower */
#define XAE_UAWU_OFFSET 0 x00000024 /* Unicast address word upper */
#define XAE_TPID0_OFFSET 0 x00000028 /* VLAN TPID0 register */
#define XAE_TPID1_OFFSET 0 x0000002C /* VLAN TPID1 register */
#define XAE_PPST_OFFSET 0 x00000030 /* PCS PMA Soft Temac Status Reg */
#define XAE_STATS_OFFSET 0 x00000200 /* Statistics counters */
#define XAE_RCW0_OFFSET 0 x00000400 /* Rx Configuration Word 0 */
#define XAE_RCW1_OFFSET 0 x00000404 /* Rx Configuration Word 1 */
#define XAE_TC_OFFSET 0 x00000408 /* Tx Configuration */
#define XAE_FCC_OFFSET 0 x0000040C /* Flow Control Configuration */
#define XAE_EMMC_OFFSET 0 x00000410 /* MAC speed configuration */
#define XAE_PHYC_OFFSET 0 x00000414 /* RX Max Frame Configuration */
#define XAE_ID_OFFSET 0 x000004F8 /* Identification register */
#define XAE_ABILITY_OFFSET 0 x000004FC /* Ability Register offset */
#define XAE_MDIO_MC_OFFSET 0 x00000500 /* MDIO Setup */
#define XAE_MDIO_MCR_OFFSET 0 x00000504 /* MDIO Control */
#define XAE_MDIO_MWD_OFFSET 0 x00000508 /* MDIO Write Data */
#define XAE_MDIO_MRD_OFFSET 0 x0000050C /* MDIO Read Data */
#define XAE_UAW0_OFFSET 0 x00000700 /* Unicast address word 0 */
#define XAE_UAW1_OFFSET 0 x00000704 /* Unicast address word 1 */
#define XAE_FMI_OFFSET 0 x00000708 /* Frame Filter Control */
#define XAE_FFE_OFFSET 0 x0000070C /* Frame Filter Enable */
#define XAE_AF0_OFFSET 0 x00000710 /* Address Filter 0 */
#define XAE_AF1_OFFSET 0 x00000714 /* Address Filter 1 */
#define XAE_AM0_OFFSET 0 x00000750 /* Frame Filter Mask Value Bytes 3-0 */
#define XAE_AM1_OFFSET 0 x00000754 /* Frame Filter Mask Value Bytes 7-4 */
#define XAE_TX_VLAN_DATA_OFFSET 0 x00004000 /* TX VLAN data table address */
#define XAE_RX_VLAN_DATA_OFFSET 0 x00008000 /* RX VLAN data table address */
#define XAE_MCAST_TABLE_OFFSET 0 x00020000 /* Multicast table address */
/* Bit Masks for Axi Ethernet RAF register */
/* Reject receive multicast destination address */
#define XAE_RAF_MCSTREJ_MASK 0 x00000002
/* Reject receive broadcast destination address */
#define XAE_RAF_BCSTREJ_MASK 0 x00000004
#define XAE_RAF_TXVTAGMODE_MASK 0 x00000018 /* Tx VLAN TAG mode */
#define XAE_RAF_RXVTAGMODE_MASK 0 x00000060 /* Rx VLAN TAG mode */
#define XAE_RAF_TXVSTRPMODE_MASK 0 x00000180 /* Tx VLAN STRIP mode */
#define XAE_RAF_RXVSTRPMODE_MASK 0 x00000600 /* Rx VLAN STRIP mode */
#define XAE_RAF_NEWFNCENBL_MASK 0 x00000800 /* New function mode */
/* Extended Multicast Filtering mode */
#define XAE_RAF_EMULTIFLTRENBL_MASK 0 x00001000
#define XAE_RAF_STATSRST_MASK 0 x00002000 /* Stats. Counter Reset */
#define XAE_RAF_RXBADFRMEN_MASK 0 x00004000 /* 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 0 x0000FFFF /* Tx pause frame value */
/* Transmit inter-frame gap adjustment value */
#define XAE_IFGP0_IFGP_MASK 0 x0000007F
/* 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 0 x00000001
/* Auto negotiation complete */
#define XAE_INT_AUTONEG_MASK 0 x00000002
#define XAE_INT_RXCMPIT_MASK 0 x00000004 /* Rx complete */
#define XAE_INT_RXRJECT_MASK 0 x00000008 /* Rx frame rejected */
#define XAE_INT_RXFIFOOVR_MASK 0 x00000010 /* Rx fifo overrun */
#define XAE_INT_TXCMPIT_MASK 0 x00000020 /* Tx complete */
#define XAE_INT_RXDCMLOCK_MASK 0 x00000040 /* Rx Dcm Lock */
#define XAE_INT_MGTRDY_MASK 0 x00000080 /* MGT clock Lock */
#define XAE_INT_PHYRSTCMPLT_MASK 0 x00000100 /* Phy Reset complete */
#define XAE_INT_ALL_MASK 0 x0000003F /* 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 0 x0000FFFF /* TPID 0 */
#define XAE_TPID_1_MASK 0 xFFFF0000 /* TPID 1 */
/* Bit masks for Axi Ethernet VLAN TPID Word 1 register */
#define XAE_TPID_2_MASK 0 x0000FFFF /* TPID 0 */
#define XAE_TPID_3_MASK 0 xFFFF0000 /* TPID 1 */
/* Bit masks for Axi Ethernet RCW1 register */
#define XAE_RCW1_RST_MASK 0 x80000000 /* Reset */
#define XAE_RCW1_JUM_MASK 0 x40000000 /* Jumbo frame enable */
/* In-Band FCS enable (FCS not stripped) */
#define XAE_RCW1_FCS_MASK 0 x20000000
#define XAE_RCW1_RX_MASK 0 x10000000 /* Receiver enable */
#define XAE_RCW1_VLAN_MASK 0 x08000000 /* VLAN frame enable */
/* Length/type field valid check disable */
#define XAE_RCW1_LT_DIS_MASK 0 x02000000
/* Control frame Length check disable */
#define XAE_RCW1_CL_DIS_MASK 0 x01000000
/* Pause frame source address bits [47:32]. Bits [31:0] are
* stored in register RCW0
*/
#define XAE_RCW1_PAUSEADDR_MASK 0 x0000FFFF
/* Bit masks for Axi Ethernet TC register */
#define XAE_TC_RST_MASK 0 x80000000 /* Reset */
#define XAE_TC_JUM_MASK 0 x40000000 /* Jumbo frame enable */
/* In-Band FCS enable (FCS not generated) */
#define XAE_TC_FCS_MASK 0 x20000000
#define XAE_TC_TX_MASK 0 x10000000 /* Transmitter enable */
#define XAE_TC_VLAN_MASK 0 x08000000 /* VLAN frame enable */
/* Inter-frame gap adjustment enable */
#define XAE_TC_IFG_MASK 0 x02000000
/* Bit masks for Axi Ethernet FCC register */
#define XAE_FCC_FCRX_MASK 0 x20000000 /* Rx flow control enable */
#define XAE_FCC_FCTX_MASK 0 x40000000 /* Tx flow control enable */
/* Bit masks for Axi Ethernet EMMC register */
#define XAE_EMMC_LINKSPEED_MASK 0 xC0000000 /* Link speed */
#define XAE_EMMC_RGMII_MASK 0 x20000000 /* RGMII mode enable */
#define XAE_EMMC_SGMII_MASK 0 x10000000 /* SGMII mode enable */
#define XAE_EMMC_GPCS_MASK 0 x08000000 /* 1000BaseX mode enable */
#define XAE_EMMC_HOST_MASK 0 x04000000 /* Host interface enable */
#define XAE_EMMC_TX16BIT 0 x02000000 /* 16 bit Tx client enable */
#define XAE_EMMC_RX16BIT 0 x01000000 /* 16 bit Rx client enable */
#define XAE_EMMC_LINKSPD_10 0 x00000000 /* Link Speed mask for 10 Mbit */
#define XAE_EMMC_LINKSPD_100 0 x40000000 /* Link Speed mask for 100 Mbit */
#define XAE_EMMC_LINKSPD_1000 0 x80000000 /* Link Speed mask for 1000 Mbit */
/* Bit masks for Axi Ethernet PHYC register */
#define XAE_PHYC_SGMIILINKSPEED_MASK 0 xC0000000 /* SGMII link speed mask*/
#define XAE_PHYC_RGMIILINKSPEED_MASK 0 x0000000C /* RGMII link speed */
#define XAE_PHYC_RGMIIHD_MASK 0 x00000002 /* RGMII Half-duplex */
#define XAE_PHYC_RGMIILINK_MASK 0 x00000001 /* RGMII link status */
#define XAE_PHYC_RGLINKSPD_10 0 x00000000 /* RGMII link 10 Mbit */
#define XAE_PHYC_RGLINKSPD_100 0 x00000004 /* RGMII link 100 Mbit */
#define XAE_PHYC_RGLINKSPD_1000 0 x00000008 /* RGMII link 1000 Mbit */
#define XAE_PHYC_SGLINKSPD_10 0 x00000000 /* SGMII link 10 Mbit */
#define XAE_PHYC_SGLINKSPD_100 0 x40000000 /* SGMII link 100 Mbit */
#define XAE_PHYC_SGLINKSPD_1000 0 x80000000 /* SGMII link 1000 Mbit */
/* Bit masks for Axi Ethernet ability register */
#define XAE_ABILITY_PFC BIT(16 )
#define XAE_ABILITY_FRAME_FILTER BIT(10 )
#define XAE_ABILITY_HALF_DUPLEX BIT(9 )
#define XAE_ABILITY_STATS BIT(8 )
#define XAE_ABILITY_2_5G BIT(3 )
#define XAE_ABILITY_1G BIT(2 )
#define XAE_ABILITY_100M BIT(1 )
#define XAE_ABILITY_10M BIT(0 )
/* Bit masks for Axi Ethernet MDIO interface MC register */
#define XAE_MDIO_MC_MDIOEN_MASK 0 x00000040 /* MII management enable */
#define XAE_MDIO_MC_CLOCK_DIVIDE_MAX 0 x3F /* Maximum MDIO divisor */
/* Bit masks for Axi Ethernet MDIO interface MCR register */
#define XAE_MDIO_MCR_PHYAD_MASK 0 x1F000000 /* Phy Address Mask */
#define XAE_MDIO_MCR_PHYAD_SHIFT 24 /* Phy Address Shift */
#define XAE_MDIO_MCR_REGAD_MASK 0 x001F0000 /* Reg Address Mask */
#define XAE_MDIO_MCR_REGAD_SHIFT 16 /* Reg Address Shift */
#define XAE_MDIO_MCR_OP_MASK 0 x0000C000 /* Operation Code Mask */
#define XAE_MDIO_MCR_OP_SHIFT 13 /* Operation Code Shift */
#define XAE_MDIO_MCR_OP_READ_MASK 0 x00008000 /* Op Code Read Mask */
#define XAE_MDIO_MCR_OP_WRITE_MASK 0 x00004000 /* Op Code Write Mask */
#define XAE_MDIO_MCR_INITIATE_MASK 0 x00000800 /* Ready Mask */
#define XAE_MDIO_MCR_READY_MASK 0 x00000080 /* Ready Mask */
/* Bit masks for Axi Ethernet MDIO interface MIS, MIP, MIE, MIC registers */
#define XAE_MDIO_INT_MIIM_RDY_MASK 0 x00000001 /* 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 0 x0000FFFF
/* Bit masks for Axi Ethernet FMC register */
#define XAE_FMI_PM_MASK 0 x80000000 /* Promis. mode enable */
#define XAE_FMI_IND_MASK 0 x00000003 /* 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 BIT(0 )
#define XAE_FEATURE_PARTIAL_TX_CSUM BIT(1 )
#define XAE_FEATURE_FULL_RX_CSUM BIT(2 )
#define XAE_FEATURE_FULL_TX_CSUM BIT(3 )
#define XAE_FEATURE_DMA_64BIT BIT(4 )
#define XAE_FEATURE_STATS BIT(5 )
#define XAE_NO_CSUM_OFFLOAD 0
#define XAE_FULL_CSUM_STATUS_MASK 0 x00000038
#define XAE_IP_UDP_CSUM_VALIDATED 0 x00000003
#define XAE_IP_TCP_CSUM_VALIDATED 0 x00000002
#define DELAY_OF_ONE_MILLISEC 1000
/* Xilinx PCS/PMA PHY register for switching 1000BaseX or SGMII */
#define XLNX_MII_STD_SELECT_REG 0 x11
#define XLNX_MII_STD_SELECT_SGMII BIT(0 )
/* enum temac_stat - TEMAC statistics counters
*
* Index of statistics counters within the TEMAC . This must match the
* order / offset of hardware registers exactly .
*/
enum temac_stat {
STAT_RX_BYTES = 0 ,
STAT_TX_BYTES,
STAT_UNDERSIZE_FRAMES,
STAT_FRAGMENT_FRAMES,
STAT_RX_64_BYTE_FRAMES,
STAT_RX_65_127_BYTE_FRAMES,
STAT_RX_128_255_BYTE_FRAMES,
STAT_RX_256_511_BYTE_FRAMES,
STAT_RX_512_1023_BYTE_FRAMES,
STAT_RX_1024_MAX_BYTE_FRAMES,
STAT_RX_OVERSIZE_FRAMES,
STAT_TX_64_BYTE_FRAMES,
STAT_TX_65_127_BYTE_FRAMES,
STAT_TX_128_255_BYTE_FRAMES,
STAT_TX_256_511_BYTE_FRAMES,
STAT_TX_512_1023_BYTE_FRAMES,
STAT_TX_1024_MAX_BYTE_FRAMES,
STAT_TX_OVERSIZE_FRAMES,
STAT_RX_GOOD_FRAMES,
STAT_RX_FCS_ERRORS,
STAT_RX_BROADCAST_FRAMES,
STAT_RX_MULTICAST_FRAMES,
STAT_RX_CONTROL_FRAMES,
STAT_RX_LENGTH_ERRORS,
STAT_RX_VLAN_FRAMES,
STAT_RX_PAUSE_FRAMES,
STAT_RX_CONTROL_OPCODE_ERRORS,
STAT_TX_GOOD_FRAMES,
STAT_TX_BROADCAST_FRAMES,
STAT_TX_MULTICAST_FRAMES,
STAT_TX_UNDERRUN_ERRORS,
STAT_TX_CONTROL_FRAMES,
STAT_TX_VLAN_FRAMES,
STAT_TX_PAUSE_FRAMES,
STAT_TX_SINGLE_COLLISION_FRAMES,
STAT_TX_MULTIPLE_COLLISION_FRAMES,
STAT_TX_DEFERRED_FRAMES,
STAT_TX_LATE_COLLISIONS,
STAT_TX_EXCESS_COLLISIONS,
STAT_TX_EXCESS_DEFERRAL,
STAT_RX_ALIGNMENT_ERRORS,
STAT_TX_PFC_FRAMES,
STAT_RX_PFC_FRAMES,
STAT_USER_DEFINED0,
STAT_USER_DEFINED1,
STAT_USER_DEFINED2,
STAT_COUNT,
};
/**
* 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 .
* @ skb : Pointer to SKB transferred using DMA
*/
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
* @ 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 1000 BaseX / 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_dim : DIM state for the receive queue
* @ rx_dim_enabled : Whether DIM is enabled or not
* @ rx_irqs : Number of interrupts
* @ rx_cr_lock : Lock protecting @ rx_dma_cr , its register , and @ rx_dma_started
* @ rx_dma_cr : Nominal content of RX DMA control register
* @ rx_dma_started : Set when RX DMA is started
* @ 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_cr_lock : Lock protecting @ tx_dma_cr , its register , and @ tx_dma_started
* @ tx_dma_cr : Nominal content of TX DMA control register
* @ tx_dma_started : Set when TX DMA is started
* @ 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
* @ hw_stat_base : Base offset for statistics counters . This may be nonzero if
* the statistics counteres were reset or wrapped around .
* @ hw_last_counter : Last - seen value of each statistic counter
* @ reset_in_progress : Set while we are performing a reset and statistics
* counters may be invalid
* @ hw_stats_seqcount : Sequence counter for @ hw_stat_base , @ hw_last_counter ,
* and @ reset_in_progress .
* @ stats_lock : Lock for @ hw_stats_seqcount
* @ stats_work : Work for reading the hardware statistics counters often enough
* to catch overflows .
* @ dma_err_task : Work structure to process Axi DMA errors
* @ stopping : Set when @ dma_err_task shouldn ' t do anything because we are
* about to stop the device .
* @ 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 9 k . Else it is
* 1522 bytes ( assuming support for basic VLAN )
* @ rxmem : Stores rx memory size for jumbo frame handling .
* @ 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;
struct dim rx_dim;
bool rx_dim_enabled;
u16 rx_irqs;
spinlock_t rx_cr_lock;
u32 rx_dma_cr;
bool rx_dma_started;
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;
spinlock_t tx_cr_lock;
u32 tx_dma_cr;
bool tx_dma_started;
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;
u64 hw_stat_base[STAT_COUNT];
u32 hw_last_counter[STAT_COUNT];
seqcount_mutex_t hw_stats_seqcount;
struct mutex stats_lock;
struct delayed_work stats_work;
bool reset_in_progress;
struct work_struct dma_err_task;
bool stopping;
int tx_irq;
int rx_irq;
int eth_irq;
phy_interface_t phy_mode;
u32 options;
u32 features;
u32 max_frm_size;
u32 rxmem;
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 axienet_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 */
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