415 lines
14 KiB
C
415 lines
14 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef XILINX_LL_TEMAC_H
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#define XILINX_LL_TEMAC_H
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#include <linux/netdevice.h>
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#include <linux/of.h>
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#include <linux/spinlock.h>
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#ifdef CONFIG_PPC_DCR
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#include <asm/dcr.h>
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#include <asm/dcr-regs.h>
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#endif
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/* packet size info */
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#define XTE_HDR_SIZE 14 /* size of Ethernet header */
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#define XTE_TRL_SIZE 4 /* size of Ethernet trailer (FCS) */
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#define XTE_JUMBO_MTU 9000
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#define XTE_MAX_JUMBO_FRAME_SIZE (XTE_JUMBO_MTU + XTE_HDR_SIZE + XTE_TRL_SIZE)
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/* Configuration options */
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/* Accept all incoming packets.
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* This option defaults to disabled (cleared)
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*/
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#define XTE_OPTION_PROMISC (1 << 0)
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/* Jumbo frame support for Tx & Rx.
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* This option defaults to disabled (cleared)
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*/
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#define XTE_OPTION_JUMBO (1 << 1)
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/* VLAN Rx & Tx frame support.
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* This option defaults to disabled (cleared)
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*/
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#define XTE_OPTION_VLAN (1 << 2)
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/* Enable recognition of flow control frames on Rx
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* This option defaults to enabled (set)
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*/
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#define XTE_OPTION_FLOW_CONTROL (1 << 4)
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/* Strip FCS and PAD from incoming frames.
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* Note: PAD from VLAN frames is not stripped.
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* This option defaults to disabled (set)
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*/
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#define XTE_OPTION_FCS_STRIP (1 << 5)
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/* Generate FCS field and add PAD automatically for outgoing frames.
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* This option defaults to enabled (set)
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*/
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#define XTE_OPTION_FCS_INSERT (1 << 6)
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/* Enable Length/Type error checking for incoming frames. When this option is
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* set, the MAC will filter frames that have a mismatched type/length field
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* and if XTE_OPTION_REPORT_RXERR is set, the user is notified when these
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* types of frames are encountered. When this option is cleared, the MAC will
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* allow these types of frames to be received.
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* This option defaults to enabled (set)
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*/
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#define XTE_OPTION_LENTYPE_ERR (1 << 7)
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/* Enable the transmitter.
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* This option defaults to enabled (set)
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*/
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#define XTE_OPTION_TXEN (1 << 11)
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/* Enable the receiver
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* This option defaults to enabled (set)
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*/
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#define XTE_OPTION_RXEN (1 << 12)
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/* Default options set when device is initialized or reset */
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#define XTE_OPTION_DEFAULTS \
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(XTE_OPTION_TXEN | \
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XTE_OPTION_FLOW_CONTROL | \
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XTE_OPTION_RXEN)
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/* XPS_LL_TEMAC SDMA registers definition */
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#define TX_NXTDESC_PTR 0x00 /* r */
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#define TX_CURBUF_ADDR 0x01 /* r */
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#define TX_CURBUF_LENGTH 0x02 /* r */
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#define TX_CURDESC_PTR 0x03 /* rw */
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#define TX_TAILDESC_PTR 0x04 /* rw */
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#define TX_CHNL_CTRL 0x05 /* rw */
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/*
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* 0:7 24:31 IRQTimeout
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* 8:15 16:23 IRQCount
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* 16:20 11:15 Reserved
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* 21 10 0
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* 22 9 UseIntOnEnd
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* 23 8 LdIRQCnt
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* 24 7 IRQEn
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* 25:28 3:6 Reserved
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* 29 2 IrqErrEn
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* 30 1 IrqDlyEn
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* 31 0 IrqCoalEn
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*/
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#define CHNL_CTRL_IRQ_IOE (1 << 9)
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#define CHNL_CTRL_IRQ_EN (1 << 7)
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#define CHNL_CTRL_IRQ_ERR_EN (1 << 2)
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#define CHNL_CTRL_IRQ_DLY_EN (1 << 1)
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#define CHNL_CTRL_IRQ_COAL_EN (1 << 0)
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#define TX_IRQ_REG 0x06 /* rw */
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/*
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* 0:7 24:31 DltTmrValue
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* 8:15 16:23 ClscCntrValue
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* 16:17 14:15 Reserved
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* 18:21 10:13 ClscCnt
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* 22:23 8:9 DlyCnt
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* 24:28 3::7 Reserved
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* 29 2 ErrIrq
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* 30 1 DlyIrq
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* 31 0 CoalIrq
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*/
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#define TX_CHNL_STS 0x07 /* r */
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/*
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* 0:9 22:31 Reserved
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* 10 21 TailPErr
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* 11 20 CmpErr
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* 12 19 AddrErr
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* 13 18 NxtPErr
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* 14 17 CurPErr
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* 15 16 BsyWr
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* 16:23 8:15 Reserved
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* 24 7 Error
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* 25 6 IOE
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* 26 5 SOE
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* 27 4 Cmplt
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* 28 3 SOP
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* 29 2 EOP
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* 30 1 EngBusy
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* 31 0 Reserved
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*/
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#define RX_NXTDESC_PTR 0x08 /* r */
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#define RX_CURBUF_ADDR 0x09 /* r */
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#define RX_CURBUF_LENGTH 0x0a /* r */
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#define RX_CURDESC_PTR 0x0b /* rw */
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#define RX_TAILDESC_PTR 0x0c /* rw */
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#define RX_CHNL_CTRL 0x0d /* rw */
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/*
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* 0:7 24:31 IRQTimeout
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* 8:15 16:23 IRQCount
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* 16:20 11:15 Reserved
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* 21 10 0
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* 22 9 UseIntOnEnd
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* 23 8 LdIRQCnt
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* 24 7 IRQEn
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* 25:28 3:6 Reserved
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* 29 2 IrqErrEn
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* 30 1 IrqDlyEn
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* 31 0 IrqCoalEn
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*/
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#define RX_IRQ_REG 0x0e /* rw */
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#define IRQ_COAL (1 << 0)
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#define IRQ_DLY (1 << 1)
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#define IRQ_ERR (1 << 2)
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#define IRQ_DMAERR (1 << 7) /* this is not documented ??? */
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/*
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* 0:7 24:31 DltTmrValue
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* 8:15 16:23 ClscCntrValue
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* 16:17 14:15 Reserved
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* 18:21 10:13 ClscCnt
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* 22:23 8:9 DlyCnt
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* 24:28 3::7 Reserved
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*/
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#define RX_CHNL_STS 0x0f /* r */
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#define CHNL_STS_ENGBUSY (1 << 1)
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#define CHNL_STS_EOP (1 << 2)
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#define CHNL_STS_SOP (1 << 3)
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#define CHNL_STS_CMPLT (1 << 4)
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#define CHNL_STS_SOE (1 << 5)
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#define CHNL_STS_IOE (1 << 6)
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#define CHNL_STS_ERR (1 << 7)
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#define CHNL_STS_BSYWR (1 << 16)
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#define CHNL_STS_CURPERR (1 << 17)
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#define CHNL_STS_NXTPERR (1 << 18)
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#define CHNL_STS_ADDRERR (1 << 19)
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#define CHNL_STS_CMPERR (1 << 20)
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#define CHNL_STS_TAILERR (1 << 21)
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/*
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* 0:9 22:31 Reserved
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* 10 21 TailPErr
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* 11 20 CmpErr
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* 12 19 AddrErr
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* 13 18 NxtPErr
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* 14 17 CurPErr
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* 15 16 BsyWr
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* 16:23 8:15 Reserved
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* 24 7 Error
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* 25 6 IOE
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* 26 5 SOE
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* 27 4 Cmplt
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* 28 3 SOP
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* 29 2 EOP
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* 30 1 EngBusy
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* 31 0 Reserved
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*/
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#define DMA_CONTROL_REG 0x10 /* rw */
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#define DMA_CONTROL_RST (1 << 0)
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#define DMA_TAIL_ENABLE (1 << 2)
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/* XPS_LL_TEMAC direct registers definition */
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#define XTE_RAF0_OFFSET 0x00
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#define RAF0_RST (1 << 0)
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#define RAF0_MCSTREJ (1 << 1)
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#define RAF0_BCSTREJ (1 << 2)
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#define XTE_TPF0_OFFSET 0x04
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#define XTE_IFGP0_OFFSET 0x08
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#define XTE_ISR0_OFFSET 0x0c
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#define ISR0_HARDACSCMPLT (1 << 0)
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#define ISR0_AUTONEG (1 << 1)
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#define ISR0_RXCMPLT (1 << 2)
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#define ISR0_RXREJ (1 << 3)
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#define ISR0_RXFIFOOVR (1 << 4)
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#define ISR0_TXCMPLT (1 << 5)
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#define ISR0_RXDCMLCK (1 << 6)
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#define XTE_IPR0_OFFSET 0x10
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#define XTE_IER0_OFFSET 0x14
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#define XTE_MSW0_OFFSET 0x20
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#define XTE_LSW0_OFFSET 0x24
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#define XTE_CTL0_OFFSET 0x28
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#define XTE_RDY0_OFFSET 0x2c
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#define XTE_RSE_MIIM_RR_MASK 0x0002
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#define XTE_RSE_MIIM_WR_MASK 0x0004
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#define XTE_RSE_CFG_RR_MASK 0x0020
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#define XTE_RSE_CFG_WR_MASK 0x0040
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#define XTE_RDY0_HARD_ACS_RDY_MASK (0x10000)
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/* XPS_LL_TEMAC indirect registers offset definition */
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#define XTE_RXC0_OFFSET 0x00000200 /* Rx configuration word 0 */
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#define XTE_RXC1_OFFSET 0x00000240 /* Rx configuration word 1 */
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#define XTE_RXC1_RXRST_MASK (1 << 31) /* Receiver reset */
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#define XTE_RXC1_RXJMBO_MASK (1 << 30) /* Jumbo frame enable */
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#define XTE_RXC1_RXFCS_MASK (1 << 29) /* FCS not stripped */
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#define XTE_RXC1_RXEN_MASK (1 << 28) /* Receiver enable */
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#define XTE_RXC1_RXVLAN_MASK (1 << 27) /* VLAN enable */
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#define XTE_RXC1_RXHD_MASK (1 << 26) /* Half duplex */
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#define XTE_RXC1_RXLT_MASK (1 << 25) /* Length/type check disable */
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#define XTE_TXC_OFFSET 0x00000280 /* Tx configuration */
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#define XTE_TXC_TXRST_MASK (1 << 31) /* Transmitter reset */
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#define XTE_TXC_TXJMBO_MASK (1 << 30) /* Jumbo frame enable */
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#define XTE_TXC_TXFCS_MASK (1 << 29) /* Generate FCS */
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#define XTE_TXC_TXEN_MASK (1 << 28) /* Transmitter enable */
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#define XTE_TXC_TXVLAN_MASK (1 << 27) /* VLAN enable */
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#define XTE_TXC_TXHD_MASK (1 << 26) /* Half duplex */
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#define XTE_FCC_OFFSET 0x000002C0 /* Flow control config */
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#define XTE_FCC_RXFLO_MASK (1 << 29) /* Rx flow control enable */
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#define XTE_FCC_TXFLO_MASK (1 << 30) /* Tx flow control enable */
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#define XTE_EMCFG_OFFSET 0x00000300 /* EMAC configuration */
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#define XTE_EMCFG_LINKSPD_MASK 0xC0000000 /* Link speed */
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#define XTE_EMCFG_HOSTEN_MASK (1 << 26) /* Host interface enable */
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#define XTE_EMCFG_LINKSPD_10 0x00000000 /* 10 Mbit LINKSPD_MASK */
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#define XTE_EMCFG_LINKSPD_100 (1 << 30) /* 100 Mbit LINKSPD_MASK */
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#define XTE_EMCFG_LINKSPD_1000 (1 << 31) /* 1000 Mbit LINKSPD_MASK */
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#define XTE_GMIC_OFFSET 0x00000320 /* RGMII/SGMII config */
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#define XTE_MC_OFFSET 0x00000340 /* MDIO configuration */
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#define XTE_UAW0_OFFSET 0x00000380 /* Unicast address word 0 */
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#define XTE_UAW1_OFFSET 0x00000384 /* Unicast address word 1 */
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#define XTE_MAW0_OFFSET 0x00000388 /* Multicast addr word 0 */
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#define XTE_MAW1_OFFSET 0x0000038C /* Multicast addr word 1 */
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#define XTE_AFM_OFFSET 0x00000390 /* Promiscuous mode */
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#define XTE_AFM_EPPRM_MASK (1 << 31) /* Promiscuous mode enable */
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/* Interrupt Request status */
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#define XTE_TIS_OFFSET 0x000003A0
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#define TIS_FRIS (1 << 0)
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#define TIS_MRIS (1 << 1)
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#define TIS_MWIS (1 << 2)
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#define TIS_ARIS (1 << 3)
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#define TIS_AWIS (1 << 4)
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#define TIS_CRIS (1 << 5)
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#define TIS_CWIS (1 << 6)
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#define XTE_TIE_OFFSET 0x000003A4 /* Interrupt enable */
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/* MII Management Control register (MGTCR) */
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#define XTE_MGTDR_OFFSET 0x000003B0 /* MII data */
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#define XTE_MIIMAI_OFFSET 0x000003B4 /* MII control */
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#define CNTLREG_WRITE_ENABLE_MASK 0x8000
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#define CNTLREG_EMAC1SEL_MASK 0x0400
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#define CNTLREG_ADDRESSCODE_MASK 0x03ff
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/* CDMAC descriptor status bit definitions */
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#define STS_CTRL_APP0_ERR (1 << 31)
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#define STS_CTRL_APP0_IRQONEND (1 << 30)
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/* undocumented */
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#define STS_CTRL_APP0_STOPONEND (1 << 29)
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#define STS_CTRL_APP0_CMPLT (1 << 28)
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#define STS_CTRL_APP0_SOP (1 << 27)
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#define STS_CTRL_APP0_EOP (1 << 26)
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#define STS_CTRL_APP0_ENGBUSY (1 << 25)
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/* undocumented */
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#define STS_CTRL_APP0_ENGRST (1 << 24)
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#define TX_CONTROL_CALC_CSUM_MASK 1
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#define MULTICAST_CAM_TABLE_NUM 4
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/* TEMAC Synthesis features */
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#define TEMAC_FEATURE_RX_CSUM (1 << 0)
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#define TEMAC_FEATURE_TX_CSUM (1 << 1)
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/* TX/RX CURDESC_PTR points to first descriptor */
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/* TX/RX TAILDESC_PTR points to last descriptor in linked list */
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/**
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* struct cdmac_bd - LocalLink buffer descriptor format
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*
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* app0 bits:
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* 0 Error
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* 1 IrqOnEnd generate an interrupt at completion of DMA op
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* 2 reserved
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* 3 completed Current descriptor completed
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* 4 SOP TX - marks first desc/ RX marks first desct
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* 5 EOP TX marks last desc/RX marks last desc
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* 6 EngBusy DMA is processing
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* 7 reserved
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* 8:31 application specific
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*/
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struct cdmac_bd {
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u32 next; /* Physical address of next buffer descriptor */
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u32 phys;
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u32 len;
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u32 app0;
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u32 app1; /* TX start << 16 | insert */
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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 */
|