diff options
Diffstat (limited to 'drivers/net/ethernet/xilinx/ll_temac.h')
| -rw-r--r-- | drivers/net/ethernet/xilinx/ll_temac.h | 414 |
1 files changed, 414 insertions, 0 deletions
diff --git a/drivers/net/ethernet/xilinx/ll_temac.h b/drivers/net/ethernet/xilinx/ll_temac.h new file mode 100644 index 000000000..6668d1b76 --- /dev/null +++ b/drivers/net/ethernet/xilinx/ll_temac.h @@ -0,0 +1,414 @@ +/* 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/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 */ |