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kernel/drivers/net/ethernet/xilinx/ll_temac.h

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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef XILINX_LL_TEMAC_H
#define XILINX_LL_TEMAC_H
#include <linux/netdevice.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/spinlock.h>
#ifdef CONFIG_PPC_DCR
#include <asm/dcr.h>
#include <asm/dcr-regs.h>
#endif
/* packet size info */
#define XTE_HDR_SIZE 14 /* size of Ethernet header */
#define XTE_TRL_SIZE 4 /* size of Ethernet trailer (FCS) */
#define XTE_JUMBO_MTU 9000
#define XTE_MAX_JUMBO_FRAME_SIZE (XTE_JUMBO_MTU + XTE_HDR_SIZE + XTE_TRL_SIZE)
/* Configuration options */
/* Accept all incoming packets.
* This option defaults to disabled (cleared)
*/
#define XTE_OPTION_PROMISC (1 << 0)
/* Jumbo frame support for Tx & Rx.
* This option defaults to disabled (cleared)
*/
#define XTE_OPTION_JUMBO (1 << 1)
/* VLAN Rx & Tx frame support.
* This option defaults to disabled (cleared)
*/
#define XTE_OPTION_VLAN (1 << 2)
/* Enable recognition of flow control frames on Rx
* This option defaults to enabled (set)
*/
#define XTE_OPTION_FLOW_CONTROL (1 << 4)
/* Strip FCS and PAD from incoming frames.
* Note: PAD from VLAN frames is not stripped.
* This option defaults to disabled (set)
*/
#define XTE_OPTION_FCS_STRIP (1 << 5)
/* Generate FCS field and add PAD automatically for outgoing frames.
* This option defaults to enabled (set)
*/
#define XTE_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 XTE_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.
* This option defaults to enabled (set)
*/
#define XTE_OPTION_LENTYPE_ERR (1 << 7)
/* Enable the transmitter.
* This option defaults to enabled (set)
*/
#define XTE_OPTION_TXEN (1 << 11)
/* Enable the receiver
* This option defaults to enabled (set)
*/
#define XTE_OPTION_RXEN (1 << 12)
/* Default options set when device is initialized or reset */
#define XTE_OPTION_DEFAULTS \
(XTE_OPTION_TXEN | \
XTE_OPTION_FLOW_CONTROL | \
XTE_OPTION_RXEN)
/* XPS_LL_TEMAC SDMA registers definition */
#define TX_NXTDESC_PTR 0x00 /* r */
#define TX_CURBUF_ADDR 0x01 /* r */
#define TX_CURBUF_LENGTH 0x02 /* r */
#define TX_CURDESC_PTR 0x03 /* rw */
#define TX_TAILDESC_PTR 0x04 /* rw */
#define TX_CHNL_CTRL 0x05 /* rw */
/*
* 0:7 24:31 IRQTimeout
* 8:15 16:23 IRQCount
* 16:20 11:15 Reserved
* 21 10 0
* 22 9 UseIntOnEnd
* 23 8 LdIRQCnt
* 24 7 IRQEn
* 25:28 3:6 Reserved
* 29 2 IrqErrEn
* 30 1 IrqDlyEn
* 31 0 IrqCoalEn
*/
#define CHNL_CTRL_IRQ_IOE (1 << 9)
#define CHNL_CTRL_IRQ_EN (1 << 7)
#define CHNL_CTRL_IRQ_ERR_EN (1 << 2)
#define CHNL_CTRL_IRQ_DLY_EN (1 << 1)
#define CHNL_CTRL_IRQ_COAL_EN (1 << 0)
#define TX_IRQ_REG 0x06 /* rw */
/*
* 0:7 24:31 DltTmrValue
* 8:15 16:23 ClscCntrValue
* 16:17 14:15 Reserved
* 18:21 10:13 ClscCnt
* 22:23 8:9 DlyCnt
* 24:28 3::7 Reserved
* 29 2 ErrIrq
* 30 1 DlyIrq
* 31 0 CoalIrq
*/
#define TX_CHNL_STS 0x07 /* r */
/*
* 0:9 22:31 Reserved
* 10 21 TailPErr
* 11 20 CmpErr
* 12 19 AddrErr
* 13 18 NxtPErr
* 14 17 CurPErr
* 15 16 BsyWr
* 16:23 8:15 Reserved
* 24 7 Error
* 25 6 IOE
* 26 5 SOE
* 27 4 Cmplt
* 28 3 SOP
* 29 2 EOP
* 30 1 EngBusy
* 31 0 Reserved
*/
#define RX_NXTDESC_PTR 0x08 /* r */
#define RX_CURBUF_ADDR 0x09 /* r */
#define RX_CURBUF_LENGTH 0x0a /* r */
#define RX_CURDESC_PTR 0x0b /* rw */
#define RX_TAILDESC_PTR 0x0c /* rw */
#define RX_CHNL_CTRL 0x0d /* rw */
/*
* 0:7 24:31 IRQTimeout
* 8:15 16:23 IRQCount
* 16:20 11:15 Reserved
* 21 10 0
* 22 9 UseIntOnEnd
* 23 8 LdIRQCnt
* 24 7 IRQEn
* 25:28 3:6 Reserved
* 29 2 IrqErrEn
* 30 1 IrqDlyEn
* 31 0 IrqCoalEn
*/
#define RX_IRQ_REG 0x0e /* rw */
#define IRQ_COAL (1 << 0)
#define IRQ_DLY (1 << 1)
#define IRQ_ERR (1 << 2)
#define IRQ_DMAERR (1 << 7) /* this is not documented ??? */
/*
* 0:7 24:31 DltTmrValue
* 8:15 16:23 ClscCntrValue
* 16:17 14:15 Reserved
* 18:21 10:13 ClscCnt
* 22:23 8:9 DlyCnt
* 24:28 3::7 Reserved
*/
#define RX_CHNL_STS 0x0f /* r */
#define CHNL_STS_ENGBUSY (1 << 1)
#define CHNL_STS_EOP (1 << 2)
#define CHNL_STS_SOP (1 << 3)
#define CHNL_STS_CMPLT (1 << 4)
#define CHNL_STS_SOE (1 << 5)
#define CHNL_STS_IOE (1 << 6)
#define CHNL_STS_ERR (1 << 7)
#define CHNL_STS_BSYWR (1 << 16)
#define CHNL_STS_CURPERR (1 << 17)
#define CHNL_STS_NXTPERR (1 << 18)
#define CHNL_STS_ADDRERR (1 << 19)
#define CHNL_STS_CMPERR (1 << 20)
#define CHNL_STS_TAILERR (1 << 21)
/*
* 0:9 22:31 Reserved
* 10 21 TailPErr
* 11 20 CmpErr
* 12 19 AddrErr
* 13 18 NxtPErr
* 14 17 CurPErr
* 15 16 BsyWr
* 16:23 8:15 Reserved
* 24 7 Error
* 25 6 IOE
* 26 5 SOE
* 27 4 Cmplt
* 28 3 SOP
* 29 2 EOP
* 30 1 EngBusy
* 31 0 Reserved
*/
#define DMA_CONTROL_REG 0x10 /* rw */
#define DMA_CONTROL_RST (1 << 0)
#define DMA_TAIL_ENABLE (1 << 2)
/* XPS_LL_TEMAC direct registers definition */
#define XTE_RAF0_OFFSET 0x00
#define RAF0_RST (1 << 0)
#define RAF0_MCSTREJ (1 << 1)
#define RAF0_BCSTREJ (1 << 2)
#define XTE_TPF0_OFFSET 0x04
#define XTE_IFGP0_OFFSET 0x08
#define XTE_ISR0_OFFSET 0x0c
#define ISR0_HARDACSCMPLT (1 << 0)
#define ISR0_AUTONEG (1 << 1)
#define ISR0_RXCMPLT (1 << 2)
#define ISR0_RXREJ (1 << 3)
#define ISR0_RXFIFOOVR (1 << 4)
#define ISR0_TXCMPLT (1 << 5)
#define ISR0_RXDCMLCK (1 << 6)
#define XTE_IPR0_OFFSET 0x10
#define XTE_IER0_OFFSET 0x14
#define XTE_MSW0_OFFSET 0x20
#define XTE_LSW0_OFFSET 0x24
#define XTE_CTL0_OFFSET 0x28
#define XTE_RDY0_OFFSET 0x2c
#define XTE_RSE_MIIM_RR_MASK 0x0002
#define XTE_RSE_MIIM_WR_MASK 0x0004
#define XTE_RSE_CFG_RR_MASK 0x0020
#define XTE_RSE_CFG_WR_MASK 0x0040
#define XTE_RDY0_HARD_ACS_RDY_MASK (0x10000)
/* XPS_LL_TEMAC indirect registers offset definition */
#define XTE_RXC0_OFFSET 0x00000200 /* Rx configuration word 0 */
#define XTE_RXC1_OFFSET 0x00000240 /* Rx configuration word 1 */
#define XTE_RXC1_RXRST_MASK (1 << 31) /* Receiver reset */
#define XTE_RXC1_RXJMBO_MASK (1 << 30) /* Jumbo frame enable */
#define XTE_RXC1_RXFCS_MASK (1 << 29) /* FCS not stripped */
#define XTE_RXC1_RXEN_MASK (1 << 28) /* Receiver enable */
#define XTE_RXC1_RXVLAN_MASK (1 << 27) /* VLAN enable */
#define XTE_RXC1_RXHD_MASK (1 << 26) /* Half duplex */
#define XTE_RXC1_RXLT_MASK (1 << 25) /* Length/type check disable */
#define XTE_TXC_OFFSET 0x00000280 /* Tx configuration */
#define XTE_TXC_TXRST_MASK (1 << 31) /* Transmitter reset */
#define XTE_TXC_TXJMBO_MASK (1 << 30) /* Jumbo frame enable */
#define XTE_TXC_TXFCS_MASK (1 << 29) /* Generate FCS */
#define XTE_TXC_TXEN_MASK (1 << 28) /* Transmitter enable */
#define XTE_TXC_TXVLAN_MASK (1 << 27) /* VLAN enable */
#define XTE_TXC_TXHD_MASK (1 << 26) /* Half duplex */
#define XTE_FCC_OFFSET 0x000002C0 /* Flow control config */
#define XTE_FCC_RXFLO_MASK (1 << 29) /* Rx flow control enable */
#define XTE_FCC_TXFLO_MASK (1 << 30) /* Tx flow control enable */
#define XTE_EMCFG_OFFSET 0x00000300 /* EMAC configuration */
#define XTE_EMCFG_LINKSPD_MASK 0xC0000000 /* Link speed */
#define XTE_EMCFG_HOSTEN_MASK (1 << 26) /* Host interface enable */
#define XTE_EMCFG_LINKSPD_10 0x00000000 /* 10 Mbit LINKSPD_MASK */
#define XTE_EMCFG_LINKSPD_100 (1 << 30) /* 100 Mbit LINKSPD_MASK */
#define XTE_EMCFG_LINKSPD_1000 (1 << 31) /* 1000 Mbit LINKSPD_MASK */
#define XTE_GMIC_OFFSET 0x00000320 /* RGMII/SGMII config */
#define XTE_MC_OFFSET 0x00000340 /* MDIO configuration */
#define XTE_UAW0_OFFSET 0x00000380 /* Unicast address word 0 */
#define XTE_UAW1_OFFSET 0x00000384 /* Unicast address word 1 */
#define XTE_MAW0_OFFSET 0x00000388 /* Multicast addr word 0 */
#define XTE_MAW1_OFFSET 0x0000038C /* Multicast addr word 1 */
#define XTE_AFM_OFFSET 0x00000390 /* Promiscuous mode */
#define XTE_AFM_EPPRM_MASK (1 << 31) /* Promiscuous mode enable */
/* Interrupt Request status */
#define XTE_TIS_OFFSET 0x000003A0
#define TIS_FRIS (1 << 0)
#define TIS_MRIS (1 << 1)
#define TIS_MWIS (1 << 2)
#define TIS_ARIS (1 << 3)
#define TIS_AWIS (1 << 4)
#define TIS_CRIS (1 << 5)
#define TIS_CWIS (1 << 6)
#define XTE_TIE_OFFSET 0x000003A4 /* Interrupt enable */
/* MII Management Control register (MGTCR) */
#define XTE_MGTDR_OFFSET 0x000003B0 /* MII data */
#define XTE_MIIMAI_OFFSET 0x000003B4 /* MII control */
#define CNTLREG_WRITE_ENABLE_MASK 0x8000
#define CNTLREG_EMAC1SEL_MASK 0x0400
#define CNTLREG_ADDRESSCODE_MASK 0x03ff
/* CDMAC descriptor status bit definitions */
#define STS_CTRL_APP0_ERR (1 << 31)
#define STS_CTRL_APP0_IRQONEND (1 << 30)
/* undocumented */
#define STS_CTRL_APP0_STOPONEND (1 << 29)
#define STS_CTRL_APP0_CMPLT (1 << 28)
#define STS_CTRL_APP0_SOP (1 << 27)
#define STS_CTRL_APP0_EOP (1 << 26)
#define STS_CTRL_APP0_ENGBUSY (1 << 25)
/* undocumented */
#define STS_CTRL_APP0_ENGRST (1 << 24)
#define TX_CONTROL_CALC_CSUM_MASK 1
#define MULTICAST_CAM_TABLE_NUM 4
/* TEMAC Synthesis features */
#define TEMAC_FEATURE_RX_CSUM (1 << 0)
#define TEMAC_FEATURE_TX_CSUM (1 << 1)
/* TX/RX CURDESC_PTR points to first descriptor */
/* TX/RX TAILDESC_PTR points to last descriptor in linked list */
/**
* struct cdmac_bd - LocalLink buffer descriptor format
*
* app0 bits:
* 0 Error
* 1 IrqOnEnd generate an interrupt at completion of DMA op
* 2 reserved
* 3 completed Current descriptor completed
* 4 SOP TX - marks first desc/ RX marks first desct
* 5 EOP TX marks last desc/RX marks last desc
* 6 EngBusy DMA is processing
* 7 reserved
* 8:31 application specific
*/
struct cdmac_bd {
u32 next; /* Physical address of next buffer descriptor */
u32 phys;
u32 len;
u32 app0;
u32 app1; /* TX start << 16 | insert */
u32 app2; /* TX csum */
u32 app3;
u32 app4; /* skb for TX length for RX */
};
struct temac_local {
struct net_device *ndev;
struct device *dev;
/* Connection to PHY device */
struct device_node *phy_node;
/* For non-device-tree devices */
char phy_name[MII_BUS_ID_SIZE + 3];
phy_interface_t phy_interface;
/* MDIO bus data */
struct mii_bus *mii_bus; /* MII bus reference */
/* IO registers, dma functions and IRQs */
void __iomem *regs;
void __iomem *sdma_regs;
#ifdef CONFIG_PPC_DCR
dcr_host_t sdma_dcrs;
#endif
u32 (*temac_ior)(struct temac_local *lp, int offset);
void (*temac_iow)(struct temac_local *lp, int offset, u32 value);
u32 (*dma_in)(struct temac_local *lp, int reg);
void (*dma_out)(struct temac_local *lp, int reg, u32 value);
int tx_irq;
int rx_irq;
int emac_num;
struct sk_buff **rx_skb;
spinlock_t rx_lock;
/* For synchronization of indirect register access. Must be
* shared mutex between interfaces in same TEMAC block.
*/
spinlock_t *indirect_lock;
u32 options; /* Current options word */
int last_link;
unsigned int temac_features;
/* Buffer descriptors */
struct cdmac_bd *tx_bd_v;
dma_addr_t tx_bd_p;
u32 tx_bd_num;
struct cdmac_bd *rx_bd_v;
dma_addr_t rx_bd_p;
u32 rx_bd_num;
int tx_bd_ci;
int tx_bd_tail;
int rx_bd_ci;
int rx_bd_tail;
/* DMA channel control setup */
u8 coalesce_count_tx;
u8 coalesce_delay_tx;
u8 coalesce_count_rx;
u8 coalesce_delay_rx;
struct delayed_work restart_work;
};
/* Wrappers for temac_ior()/temac_iow() function pointers above */
#define temac_ior(lp, o) ((lp)->temac_ior(lp, o))
#define temac_iow(lp, o, v) ((lp)->temac_iow(lp, o, v))
/* xilinx_temac.c */
int temac_indirect_busywait(struct temac_local *lp);
u32 temac_indirect_in32(struct temac_local *lp, int reg);
u32 temac_indirect_in32_locked(struct temac_local *lp, int reg);
void temac_indirect_out32(struct temac_local *lp, int reg, u32 value);
void temac_indirect_out32_locked(struct temac_local *lp, int reg, u32 value);
/* xilinx_temac_mdio.c */
int temac_mdio_setup(struct temac_local *lp, struct platform_device *pdev);
void temac_mdio_teardown(struct temac_local *lp);
#endif /* XILINX_LL_TEMAC_H */
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