net: ax88796c: ASIX AX88796C SPI Ethernet Adapter Driver

ASIX AX88796[1] is a versatile ethernet adapter chip, that can be
connected to a CPU with a 8/16-bit bus or with an SPI. This driver
supports SPI connection.

The driver has been ported from the vendor kernel for ARTIK5[2]
boards. Several changes were made to adapt it to the current kernel
which include:

+ updated DT configuration,
+ clock configuration moved to DT,
+ new timer, ethtool and gpio APIs,
+ dev_* instead of pr_* and custom printk() wrappers,
+ removed awkward vendor power managemtn.
+ introduced ethtool tunable to control SPI compression

[1] https://www.asix.com.tw/products.php?op=pItemdetail&PItemID=104;65;86&PLine=65
[2] https://git.tizen.org/cgit/profile/common/platform/kernel/linux-3.10-artik/

The other ax88796 driver is for NE2000 compatible AX88796L chip. These
chips are not compatible. Hence, two separate drivers are required.

Signed-off-by: Łukasz Stelmach <l.stelmach@samsung.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

1 files changed, 568 insertions, 0 deletions

diff --git a/drivers/net/ethernet/asix/ax88796c_main.h b/drivers/net/ethernet/asix/ax88796c_main.h
new file mode 100644
index 000000000000..80263c3cef75
--- /dev/null
+++ b/drivers/net/ethernet/asix/ax88796c_main.h
@@ -0,0 +1,568 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2010 ASIX Electronics Corporation
+ * Copyright (c) 2020 Samsung Electronics
+ *
+ * ASIX AX88796C SPI Fast Ethernet Linux driver
+ */
+
+#ifndef _AX88796C_MAIN_H
+#define _AX88796C_MAIN_H
+
+#include <linux/netdevice.h>
+#include <linux/mii.h>
+
+#include "ax88796c_spi.h"
+
+/* These identify the driver base version and may not be removed. */
+#define DRV_NAME	"ax88796c"
+#define ADP_NAME	"ASIX AX88796C SPI Ethernet Adapter"
+
+#define TX_QUEUE_HIGH_WATER		45	/* Tx queue high water mark */
+#define TX_QUEUE_LOW_WATER		20	/* Tx queue low water mark */
+
+#define AX88796C_REGDUMP_LEN		256
+#define AX88796C_PHY_REGDUMP_LEN	14
+#define AX88796C_PHY_ID			0x10
+
+#define TX_OVERHEAD			8
+#define TX_EOP_SIZE			4
+
+#define AX_MCAST_FILTER_SIZE		8
+#define AX_MAX_MCAST			64
+#define AX_MAX_CLK                      80000000
+#define TX_HDR_SOP_DICF			0x8000
+#define TX_HDR_SOP_CPHI			0x4000
+#define TX_HDR_SOP_INT			0x2000
+#define TX_HDR_SOP_MDEQ			0x1000
+#define TX_HDR_SOP_PKTLEN		0x07FF
+#define TX_HDR_SOP_SEQNUM		0xF800
+#define TX_HDR_SOP_PKTLENBAR		0x07FF
+
+#define TX_HDR_SEG_FS			0x8000
+#define TX_HDR_SEG_LS			0x4000
+#define TX_HDR_SEG_SEGNUM		0x3800
+#define TX_HDR_SEG_SEGLEN		0x0700
+#define TX_HDR_SEG_EOFST		0xC000
+#define TX_HDR_SEG_SOFST		0x3800
+#define TX_HDR_SEG_SEGLENBAR		0x07FF
+
+#define TX_HDR_EOP_SEQNUM		0xF800
+#define TX_HDR_EOP_PKTLEN		0x07FF
+#define TX_HDR_EOP_SEQNUMBAR		0xF800
+#define TX_HDR_EOP_PKTLENBAR		0x07FF
+
+/* Rx header fields mask */
+#define RX_HDR1_MCBC			0x8000
+#define RX_HDR1_STUFF_PKT		0x4000
+#define RX_HDR1_MII_ERR			0x2000
+#define RX_HDR1_CRC_ERR			0x1000
+#define RX_HDR1_PKT_LEN			0x07FF
+
+#define RX_HDR2_SEQ_NUM			0xF800
+#define RX_HDR2_PKT_LEN_BAR		0x7FFF
+
+#define RX_HDR3_PE			0x8000
+#define RX_HDR3_L3_TYPE_IPV4V6		0x6000
+#define RX_HDR3_L3_TYPE_IP		0x4000
+#define RX_HDR3_L3_TYPE_IPV6		0x2000
+#define RX_HDR3_L4_TYPE_ICMPV6		0x1400
+#define RX_HDR3_L4_TYPE_TCP		0x1000
+#define RX_HDR3_L4_TYPE_IGMP		0x0c00
+#define RX_HDR3_L4_TYPE_ICMP		0x0800
+#define RX_HDR3_L4_TYPE_UDP		0x0400
+#define RX_HDR3_L3_ERR			0x0200
+#define RX_HDR3_L4_ERR			0x0100
+#define RX_HDR3_PRIORITY(x)		((x) << 4)
+#define RX_HDR3_STRIP			0x0008
+#define RX_HDR3_VLAN_ID			0x0007
+
+struct ax88796c_pcpu_stats {
+	u64_stats_t rx_packets;
+	u64_stats_t rx_bytes;
+	u64_stats_t tx_packets;
+	u64_stats_t tx_bytes;
+	struct u64_stats_sync syncp;
+	u32 rx_dropped;
+	u32 tx_dropped;
+	u32 rx_frame_errors;
+	u32 rx_crc_errors;
+};
+
+struct ax88796c_device {
+	struct spi_device	*spi;
+	struct net_device	*ndev;
+	struct ax88796c_pcpu_stats __percpu *stats;
+
+	struct work_struct	ax_work;
+
+	struct mutex		spi_lock; /* device access */
+
+	struct sk_buff_head	tx_wait_q;
+
+	struct axspi_data	ax_spi;
+
+	struct mii_bus		*mdiobus;
+	struct phy_device	*phydev;
+
+	int			msg_enable;
+
+	u16			seq_num;
+
+	u8			multi_filter[AX_MCAST_FILTER_SIZE];
+
+	int			link;
+	int			speed;
+	int			duplex;
+	int			pause;
+	int			asym_pause;
+	int			flowctrl;
+		#define AX_FC_NONE		0
+		#define AX_FC_RX		BIT(0)
+		#define AX_FC_TX		BIT(1)
+		#define AX_FC_ANEG		BIT(2)
+
+	u32			priv_flags;
+		#define AX_CAP_COMP		BIT(0)
+		#define AX_PRIV_FLAGS_MASK	(AX_CAP_COMP)
+
+	unsigned long		flags;
+		#define EVENT_INTR		BIT(0)
+		#define EVENT_TX		BIT(1)
+		#define EVENT_SET_MULTI		BIT(2)
+
+};
+
+#define to_ax88796c_device(ndev) ((struct ax88796c_device *)netdev_priv(ndev))
+
+enum skb_state {
+	illegal = 0,
+	tx_done,
+	rx_done,
+	rx_err,
+};
+
+struct skb_data {
+	enum skb_state state;
+	size_t len;
+};
+
+/* A88796C register definition */
+	/* Definition of PAGE0 */
+#define P0_PSR		(0x00)
+	#define PSR_DEV_READY		BIT(7)
+	#define PSR_RESET		(0 << 15)
+	#define PSR_RESET_CLR		BIT(15)
+#define P0_BOR		(0x02)
+#define P0_FER		(0x04)
+	#define FER_IPALM		BIT(0)
+	#define FER_DCRC		BIT(1)
+	#define FER_RH3M		BIT(2)
+	#define FER_HEADERSWAP		BIT(7)
+	#define FER_WSWAP		BIT(8)
+	#define FER_BSWAP		BIT(9)
+	#define FER_INTHI		BIT(10)
+	#define FER_INTLO		(0 << 10)
+	#define FER_IRQ_PULL		BIT(11)
+	#define FER_RXEN		BIT(14)
+	#define FER_TXEN		BIT(15)
+#define P0_ISR		(0x06)
+	#define ISR_RXPKT		BIT(0)
+	#define ISR_MDQ			BIT(4)
+	#define ISR_TXT			BIT(5)
+	#define ISR_TXPAGES		BIT(6)
+	#define ISR_TXERR		BIT(8)
+	#define ISR_LINK		BIT(9)
+#define P0_IMR		(0x08)
+	#define IMR_RXPKT		BIT(0)
+	#define IMR_MDQ			BIT(4)
+	#define IMR_TXT			BIT(5)
+	#define IMR_TXPAGES		BIT(6)
+	#define IMR_TXERR		BIT(8)
+	#define IMR_LINK		BIT(9)
+	#define IMR_MASKALL		(0xFFFF)
+	#define IMR_DEFAULT		(IMR_TXERR)
+#define P0_WFCR		(0x0A)
+	#define WFCR_PMEIND		BIT(0) /* PME indication */
+	#define WFCR_PMETYPE		BIT(1) /* PME I/O type */
+	#define WFCR_PMEPOL		BIT(2) /* PME polarity */
+	#define WFCR_PMERST		BIT(3) /* Reset PME */
+	#define WFCR_SLEEP		BIT(4) /* Enable sleep mode */
+	#define WFCR_WAKEUP		BIT(5) /* Enable wakeup mode */
+	#define WFCR_WAITEVENT		BIT(6) /* Reserved */
+	#define WFCR_CLRWAKE		BIT(7) /* Clear wakeup */
+	#define WFCR_LINKCH		BIT(8) /* Enable link change */
+	#define WFCR_MAGICP		BIT(9) /* Enable magic packet */
+	#define WFCR_WAKEF		BIT(10) /* Enable wakeup frame */
+	#define WFCR_PMEEN		BIT(11) /* Enable PME pin */
+	#define WFCR_LINKCHS		BIT(12) /* Link change status */
+	#define WFCR_MAGICPS		BIT(13) /* Magic packet status */
+	#define WFCR_WAKEFS		BIT(14) /* Wakeup frame status */
+	#define WFCR_PMES		BIT(15) /* PME pin status */
+#define P0_PSCR		(0x0C)
+	#define PSCR_PS_MASK		(0xFFF0)
+	#define PSCR_PS_D0		(0)
+	#define PSCR_PS_D1		BIT(0)
+	#define PSCR_PS_D2		BIT(1)
+	#define PSCR_FPS		BIT(3) /* Enable fiber mode PS */
+	#define PSCR_SWPS		BIT(4) /* Enable software */
+						 /* PS control */
+	#define PSCR_WOLPS		BIT(5) /* Enable WOL PS */
+	#define PSCR_SWWOL		BIT(6) /* Enable software select */
+						 /* WOL PS */
+	#define PSCR_PHYOSC		BIT(7) /* Internal PHY OSC control */
+	#define PSCR_FOFEF		BIT(8) /* Force PHY generate FEF */
+	#define PSCR_FOF		BIT(9) /* Force PHY in fiber mode */
+	#define PSCR_PHYPD		BIT(10) /* PHY power down. */
+						  /* Active high */
+	#define PSCR_PHYRST		BIT(11) /* PHY reset signal. */
+						  /* Active low */
+	#define PSCR_PHYCSIL		BIT(12) /* PHY cable energy detect */
+	#define PSCR_PHYCOFF		BIT(13) /* PHY cable off */
+	#define PSCR_PHYLINK		BIT(14) /* PHY link status */
+	#define PSCR_EEPOK		BIT(15) /* EEPROM load complete */
+#define P0_MACCR	(0x0E)
+	#define MACCR_RXEN		BIT(0) /* Enable RX */
+	#define MACCR_DUPLEX_FULL	BIT(1) /* 1: Full, 0: Half */
+	#define MACCR_SPEED_100		BIT(2) /* 1: 100Mbps, 0: 10Mbps */
+	#define MACCR_RXFC_ENABLE	BIT(3)
+	#define MACCR_RXFC_MASK		0xFFF7
+	#define MACCR_TXFC_ENABLE	BIT(4)
+	#define MACCR_TXFC_MASK		0xFFEF
+	#define MACCR_PSI		BIT(6) /* Software Cable-Off */
+					       /* Power Saving Interrupt */
+	#define MACCR_PF		BIT(7)
+	#define MACCR_PMM_BITS		8
+	#define MACCR_PMM_MASK		(0x1F00)
+	#define MACCR_PMM_RESET		BIT(8)
+	#define MACCR_PMM_WAIT		(2 << 8)
+	#define MACCR_PMM_READY		(3 << 8)
+	#define MACCR_PMM_D1		(4 << 8)
+	#define MACCR_PMM_D2		(5 << 8)
+	#define MACCR_PMM_WAKE		(7 << 8)
+	#define MACCR_PMM_D1_WAKE	(8 << 8)
+	#define MACCR_PMM_D2_WAKE	(9 << 8)
+	#define MACCR_PMM_SLEEP		(10 << 8)
+	#define MACCR_PMM_PHY_RESET	(11 << 8)
+	#define MACCR_PMM_SOFT_D1	(16 << 8)
+	#define MACCR_PMM_SOFT_D2	(17 << 8)
+#define P0_TFBFCR	(0x10)
+	#define TFBFCR_SCHE_FREE_PAGE	0xE07F
+	#define TFBFCR_FREE_PAGE_BITS	0x07
+	#define TFBFCR_FREE_PAGE_LATCH	BIT(6)
+	#define TFBFCR_SET_FREE_PAGE(x)	(((x) & 0x3F) << TFBFCR_FREE_PAGE_BITS)
+	#define TFBFCR_TX_PAGE_SET	BIT(13)
+	#define TFBFCR_MANU_ENTX	BIT(15)
+	#define TX_FREEBUF_MASK		0x003F
+	#define TX_DPTSTART		0x4000
+
+#define P0_TSNR		(0x12)
+	#define TXNR_TXB_ERR		BIT(5)
+	#define TXNR_TXB_IDLE		BIT(6)
+	#define TSNR_PKT_CNT(x)		(((x) & 0x3F) << 8)
+	#define TXNR_TXB_REINIT		BIT(14)
+	#define TSNR_TXB_START		BIT(15)
+#define P0_RTDPR	(0x14)
+#define P0_RXBCR1	(0x16)
+	#define RXBCR1_RXB_DISCARD	BIT(14)
+	#define RXBCR1_RXB_START	BIT(15)
+#define P0_RXBCR2	(0x18)
+	#define RXBCR2_PKT_MASK		(0xFF)
+	#define RXBCR2_RXPC_MASK	(0x7F)
+	#define RXBCR2_RXB_READY	BIT(13)
+	#define RXBCR2_RXB_IDLE		BIT(14)
+	#define RXBCR2_RXB_REINIT	BIT(15)
+#define P0_RTWCR	(0x1A)
+	#define RTWCR_RXWC_MASK		(0x3FFF)
+	#define RTWCR_RX_LATCH		BIT(15)
+#define P0_RCPHR	(0x1C)
+
+	/* Definition of PAGE1 */
+#define P1_RPPER	(0x22)
+	#define RPPER_RXEN		BIT(0)
+#define P1_MRCR		(0x28)
+#define P1_MDR		(0x2A)
+#define P1_RMPR		(0x2C)
+#define P1_TMPR		(0x2E)
+#define P1_RXBSPCR	(0x30)
+	#define RXBSPCR_STUF_WORD_CNT(x)	(((x) & 0x7000) >> 12)
+	#define RXBSPCR_STUF_ENABLE		BIT(15)
+#define P1_MCR		(0x32)
+	#define MCR_SBP			BIT(8)
+	#define MCR_SM			BIT(9)
+	#define MCR_CRCENLAN		BIT(11)
+	#define MCR_STP			BIT(12)
+	/* Definition of PAGE2 */
+#define P2_CIR		(0x42)
+#define P2_PCR		(0x44)
+	#define PCR_POLL_EN		BIT(0)
+	#define PCR_POLL_FLOWCTRL	BIT(1)
+	#define PCR_POLL_BMCR		BIT(2)
+	#define PCR_PHYID(x)		((x) << 8)
+#define P2_PHYSR	(0x46)
+#define P2_MDIODR	(0x48)
+#define P2_MDIOCR	(0x4A)
+	#define MDIOCR_RADDR(x)		((x) & 0x1F)
+	#define MDIOCR_FADDR(x)		(((x) & 0x1F) << 8)
+	#define MDIOCR_VALID		BIT(13)
+	#define MDIOCR_READ		BIT(14)
+	#define MDIOCR_WRITE		BIT(15)
+#define P2_LCR0		(0x4C)
+	#define LCR_LED0_EN		BIT(0)
+	#define LCR_LED0_100MODE	BIT(1)
+	#define LCR_LED0_DUPLEX		BIT(2)
+	#define LCR_LED0_LINK		BIT(3)
+	#define LCR_LED0_ACT		BIT(4)
+	#define LCR_LED0_COL		BIT(5)
+	#define LCR_LED0_10MODE		BIT(6)
+	#define LCR_LED0_DUPCOL		BIT(7)
+	#define LCR_LED1_EN		BIT(8)
+	#define LCR_LED1_100MODE	BIT(9)
+	#define LCR_LED1_DUPLEX		BIT(10)
+	#define LCR_LED1_LINK		BIT(11)
+	#define LCR_LED1_ACT		BIT(12)
+	#define LCR_LED1_COL		BIT(13)
+	#define LCR_LED1_10MODE		BIT(14)
+	#define LCR_LED1_DUPCOL		BIT(15)
+#define P2_LCR1		(0x4E)
+	#define LCR_LED2_MASK		(0xFF00)
+	#define LCR_LED2_EN		BIT(0)
+	#define LCR_LED2_100MODE	BIT(1)
+	#define LCR_LED2_DUPLEX		BIT(2)
+	#define LCR_LED2_LINK		BIT(3)
+	#define LCR_LED2_ACT		BIT(4)
+	#define LCR_LED2_COL		BIT(5)
+	#define LCR_LED2_10MODE		BIT(6)
+	#define LCR_LED2_DUPCOL		BIT(7)
+#define P2_IPGCR	(0x50)
+#define P2_CRIR		(0x52)
+#define P2_FLHWCR	(0x54)
+#define P2_RXCR		(0x56)
+	#define RXCR_PRO		BIT(0)
+	#define RXCR_AMALL		BIT(1)
+	#define RXCR_SEP		BIT(2)
+	#define RXCR_AB			BIT(3)
+	#define RXCR_AM			BIT(4)
+	#define RXCR_AP			BIT(5)
+	#define RXCR_ARP		BIT(6)
+#define P2_JLCR		(0x58)
+#define P2_MPLR		(0x5C)
+
+	/* Definition of PAGE3 */
+#define P3_MACASR0	(0x62)
+	#define P3_MACASR(x)		(P3_MACASR0 + 2 * (x))
+	#define MACASR_LOWBYTE_MASK	0x00FF
+	#define MACASR_HIGH_BITS	0x08
+#define P3_MACASR1	(0x64)
+#define P3_MACASR2	(0x66)
+#define P3_MFAR01	(0x68)
+#define P3_MFAR_BASE	(0x68)
+	#define P3_MFAR(x)		(P3_MFAR_BASE + 2 * (x))
+
+#define P3_MFAR23	(0x6A)
+#define P3_MFAR45	(0x6C)
+#define P3_MFAR67	(0x6E)
+#define P3_VID0FR	(0x70)
+#define P3_VID1FR	(0x72)
+#define P3_EECSR	(0x74)
+#define P3_EEDR		(0x76)
+#define P3_EECR		(0x78)
+	#define EECR_ADDR_MASK		(0x00FF)
+	#define EECR_READ_ACT		BIT(8)
+	#define EECR_WRITE_ACT		BIT(9)
+	#define EECR_WRITE_DISABLE	BIT(10)
+	#define EECR_WRITE_ENABLE	BIT(11)
+	#define EECR_EE_READY		BIT(13)
+	#define EECR_RELOAD		BIT(14)
+	#define EECR_RESET		BIT(15)
+#define P3_TPCR		(0x7A)
+	#define TPCR_PATT_MASK		(0xFF)
+	#define TPCR_RAND_PKT_EN	BIT(14)
+	#define TPCR_FIXED_PKT_EN	BIT(15)
+#define P3_TPLR		(0x7C)
+	/* Definition of PAGE4 */
+#define P4_SPICR	(0x8A)
+	#define SPICR_RCEN		BIT(0)
+	#define SPICR_QCEN		BIT(1)
+	#define SPICR_RBRE		BIT(3)
+	#define SPICR_PMM		BIT(4)
+	#define SPICR_LOOPBACK		BIT(8)
+	#define SPICR_CORE_RES_CLR	BIT(10)
+	#define SPICR_SPI_RES_CLR	BIT(11)
+#define P4_SPIISMR	(0x8C)
+
+#define P4_COERCR0	(0x92)
+	#define COERCR0_RXIPCE		BIT(0)
+	#define COERCR0_RXIPVE		BIT(1)
+	#define COERCR0_RXV6PE		BIT(2)
+	#define COERCR0_RXTCPE		BIT(3)
+	#define COERCR0_RXUDPE		BIT(4)
+	#define COERCR0_RXICMP		BIT(5)
+	#define COERCR0_RXIGMP		BIT(6)
+	#define COERCR0_RXICV6		BIT(7)
+
+	#define COERCR0_RXTCPV6		BIT(8)
+	#define COERCR0_RXUDPV6		BIT(9)
+	#define COERCR0_RXICMV6		BIT(10)
+	#define COERCR0_RXIGMV6		BIT(11)
+	#define COERCR0_RXICV6V6	BIT(12)
+
+	#define COERCR0_DEFAULT		(COERCR0_RXIPCE | COERCR0_RXV6PE | \
+					 COERCR0_RXTCPE | COERCR0_RXUDPE | \
+					 COERCR0_RXTCPV6 | COERCR0_RXUDPV6)
+#define P4_COERCR1	(0x94)
+	#define COERCR1_IPCEDP		BIT(0)
+	#define COERCR1_IPVEDP		BIT(1)
+	#define COERCR1_V6VEDP		BIT(2)
+	#define COERCR1_TCPEDP		BIT(3)
+	#define COERCR1_UDPEDP		BIT(4)
+	#define COERCR1_ICMPDP		BIT(5)
+	#define COERCR1_IGMPDP		BIT(6)
+	#define COERCR1_ICV6DP		BIT(7)
+	#define COERCR1_RX64TE		BIT(8)
+	#define COERCR1_RXPPPE		BIT(9)
+	#define COERCR1_TCP6DP		BIT(10)
+	#define COERCR1_UDP6DP		BIT(11)
+	#define COERCR1_IC6DP		BIT(12)
+	#define COERCR1_IG6DP		BIT(13)
+	#define COERCR1_ICV66DP		BIT(14)
+	#define COERCR1_RPCE		BIT(15)
+
+	#define COERCR1_DEFAULT		(COERCR1_RXPPPE)
+
+#define P4_COETCR0	(0x96)
+	#define COETCR0_TXIP		BIT(0)
+	#define COETCR0_TXTCP		BIT(1)
+	#define COETCR0_TXUDP		BIT(2)
+	#define COETCR0_TXICMP		BIT(3)
+	#define COETCR0_TXIGMP		BIT(4)
+	#define COETCR0_TXICV6		BIT(5)
+	#define COETCR0_TXTCPV6		BIT(8)
+	#define COETCR0_TXUDPV6		BIT(9)
+	#define COETCR0_TXICMV6		BIT(10)
+	#define COETCR0_TXIGMV6		BIT(11)
+	#define COETCR0_TXICV6V6	BIT(12)
+
+	#define COETCR0_DEFAULT		(COETCR0_TXIP | COETCR0_TXTCP | \
+					 COETCR0_TXUDP | COETCR0_TXTCPV6 | \
+					 COETCR0_TXUDPV6)
+#define P4_COETCR1	(0x98)
+	#define COETCR1_TX64TE		BIT(0)
+	#define COETCR1_TXPPPE		BIT(1)
+
+#define P4_COECEDR	(0x9A)
+#define P4_L2CECR	(0x9C)
+
+	/* Definition of PAGE5 */
+#define P5_WFTR		(0xA2)
+	#define WFTR_2MS		(0x01)
+	#define WFTR_4MS		(0x02)
+	#define WFTR_8MS		(0x03)
+	#define WFTR_16MS		(0x04)
+	#define WFTR_32MS		(0x05)
+	#define WFTR_64MS		(0x06)
+	#define WFTR_128MS		(0x07)
+	#define WFTR_256MS		(0x08)
+	#define WFTR_512MS		(0x09)
+	#define WFTR_1024MS		(0x0A)
+	#define WFTR_2048MS		(0x0B)
+	#define WFTR_4096MS		(0x0C)
+	#define WFTR_8192MS		(0x0D)
+	#define WFTR_16384MS		(0x0E)
+	#define WFTR_32768MS		(0x0F)
+#define P5_WFCCR	(0xA4)
+#define P5_WFCR03	(0xA6)
+	#define WFCR03_F0_EN		BIT(0)
+	#define WFCR03_F1_EN		BIT(4)
+	#define WFCR03_F2_EN		BIT(8)
+	#define WFCR03_F3_EN		BIT(12)
+#define P5_WFCR47	(0xA8)
+	#define WFCR47_F4_EN		BIT(0)
+	#define WFCR47_F5_EN		BIT(4)
+	#define WFCR47_F6_EN		BIT(8)
+	#define WFCR47_F7_EN		BIT(12)
+#define P5_WF0BMR0	(0xAA)
+#define P5_WF0BMR1	(0xAC)
+#define P5_WF0CR	(0xAE)
+#define P5_WF0OBR	(0xB0)
+#define P5_WF1BMR0	(0xB2)
+#define P5_WF1BMR1	(0xB4)
+#define P5_WF1CR	(0xB6)
+#define P5_WF1OBR	(0xB8)
+#define P5_WF2BMR0	(0xBA)
+#define P5_WF2BMR1	(0xBC)
+
+	/* Definition of PAGE6 */
+#define P6_WF2CR	(0xC2)
+#define P6_WF2OBR	(0xC4)
+#define P6_WF3BMR0	(0xC6)
+#define P6_WF3BMR1	(0xC8)
+#define P6_WF3CR	(0xCA)
+#define P6_WF3OBR	(0xCC)
+#define P6_WF4BMR0	(0xCE)
+#define P6_WF4BMR1	(0xD0)
+#define P6_WF4CR	(0xD2)
+#define P6_WF4OBR	(0xD4)
+#define P6_WF5BMR0	(0xD6)
+#define P6_WF5BMR1	(0xD8)
+#define P6_WF5CR	(0xDA)
+#define P6_WF5OBR	(0xDC)
+
+/* Definition of PAGE7 */
+#define P7_WF6BMR0	(0xE2)
+#define P7_WF6BMR1	(0xE4)
+#define P7_WF6CR	(0xE6)
+#define P7_WF6OBR	(0xE8)
+#define P7_WF7BMR0	(0xEA)
+#define P7_WF7BMR1	(0xEC)
+#define P7_WF7CR	(0xEE)
+#define P7_WF7OBR	(0xF0)
+#define P7_WFR01	(0xF2)
+#define P7_WFR23	(0xF4)
+#define P7_WFR45	(0xF6)
+#define P7_WFR67	(0xF8)
+#define P7_WFPC0	(0xFA)
+#define P7_WFPC1	(0xFC)
+
+/* Tx headers structure */
+struct tx_sop_header {
+	/* bit 15-11: flags, bit 10-0: packet length */
+	u16 flags_len;
+	/* bit 15-11: sequence number, bit 11-0: packet length bar */
+	u16 seq_lenbar;
+};
+
+struct tx_segment_header {
+	/* bit 15-14: flags, bit 13-11: segment number */
+	/* bit 10-0: segment length */
+	u16 flags_seqnum_seglen;
+	/* bit 15-14: end offset, bit 13-11: start offset */
+	/* bit 10-0: segment length bar */
+	u16 eo_so_seglenbar;
+};
+
+struct tx_eop_header {
+	/* bit 15-11: sequence number, bit 10-0: packet length */
+	u16 seq_len;
+	/* bit 15-11: sequence number bar, bit 10-0: packet length bar */
+	u16 seqbar_lenbar;
+};
+
+struct tx_pkt_info {
+	struct tx_sop_header sop;
+	struct tx_segment_header seg;
+	struct tx_eop_header eop;
+	u16 pkt_len;
+	u16 seq_num;
+};
+
+/* Rx headers structure */
+struct rx_header {
+	u16 flags_len;
+	u16 seq_lenbar;
+	u16 flags;
+};
+
+extern unsigned long ax88796c_no_regs_mask[];
+
+#endif /* #ifndef _AX88796C_MAIN_H */