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63c6f1ce3c
The variable i82557_config_cmd is never referenced, drop. Cc: Joe Hershberger <joe.hershberger@ni.com> Signed-off-by: Tom Rini <trini@konsulko.com>
936 lines
24 KiB
C
936 lines
24 KiB
C
/*
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* (C) Copyright 2002
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <malloc.h>
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#include <net.h>
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#include <netdev.h>
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#include <asm/io.h>
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#include <pci.h>
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#include <miiphy.h>
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#undef DEBUG
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/* Ethernet chip registers.
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*/
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#define SCBStatus 0 /* Rx/Command Unit Status *Word* */
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#define SCBIntAckByte 1 /* Rx/Command Unit STAT/ACK byte */
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#define SCBCmd 2 /* Rx/Command Unit Command *Word* */
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#define SCBIntrCtlByte 3 /* Rx/Command Unit Intr.Control Byte */
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#define SCBPointer 4 /* General purpose pointer. */
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#define SCBPort 8 /* Misc. commands and operands. */
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#define SCBflash 12 /* Flash memory control. */
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#define SCBeeprom 14 /* EEPROM memory control. */
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#define SCBCtrlMDI 16 /* MDI interface control. */
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#define SCBEarlyRx 20 /* Early receive byte count. */
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#define SCBGenControl 28 /* 82559 General Control Register */
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#define SCBGenStatus 29 /* 82559 General Status register */
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/* 82559 SCB status word defnitions
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*/
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#define SCB_STATUS_CX 0x8000 /* CU finished command (transmit) */
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#define SCB_STATUS_FR 0x4000 /* frame received */
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#define SCB_STATUS_CNA 0x2000 /* CU left active state */
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#define SCB_STATUS_RNR 0x1000 /* receiver left ready state */
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#define SCB_STATUS_MDI 0x0800 /* MDI read/write cycle done */
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#define SCB_STATUS_SWI 0x0400 /* software generated interrupt */
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#define SCB_STATUS_FCP 0x0100 /* flow control pause interrupt */
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#define SCB_INTACK_MASK 0xFD00 /* all the above */
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#define SCB_INTACK_TX (SCB_STATUS_CX | SCB_STATUS_CNA)
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#define SCB_INTACK_RX (SCB_STATUS_FR | SCB_STATUS_RNR)
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/* System control block commands
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*/
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/* CU Commands */
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#define CU_NOP 0x0000
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#define CU_START 0x0010
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#define CU_RESUME 0x0020
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#define CU_STATSADDR 0x0040 /* Load Dump Statistics ctrs addr */
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#define CU_SHOWSTATS 0x0050 /* Dump statistics counters. */
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#define CU_ADDR_LOAD 0x0060 /* Base address to add to CU commands */
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#define CU_DUMPSTATS 0x0070 /* Dump then reset stats counters. */
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/* RUC Commands */
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#define RUC_NOP 0x0000
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#define RUC_START 0x0001
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#define RUC_RESUME 0x0002
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#define RUC_ABORT 0x0004
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#define RUC_ADDR_LOAD 0x0006 /* (seems not to clear on acceptance) */
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#define RUC_RESUMENR 0x0007
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#define CU_CMD_MASK 0x00f0
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#define RU_CMD_MASK 0x0007
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#define SCB_M 0x0100 /* 0 = enable interrupt, 1 = disable */
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#define SCB_SWI 0x0200 /* 1 - cause device to interrupt */
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#define CU_STATUS_MASK 0x00C0
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#define RU_STATUS_MASK 0x003C
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#define RU_STATUS_IDLE (0<<2)
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#define RU_STATUS_SUS (1<<2)
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#define RU_STATUS_NORES (2<<2)
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#define RU_STATUS_READY (4<<2)
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#define RU_STATUS_NO_RBDS_SUS ((1<<2)|(8<<2))
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#define RU_STATUS_NO_RBDS_NORES ((2<<2)|(8<<2))
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#define RU_STATUS_NO_RBDS_READY ((4<<2)|(8<<2))
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/* 82559 Port interface commands.
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*/
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#define I82559_RESET 0x00000000 /* Software reset */
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#define I82559_SELFTEST 0x00000001 /* 82559 Selftest command */
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#define I82559_SELECTIVE_RESET 0x00000002
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#define I82559_DUMP 0x00000003
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#define I82559_DUMP_WAKEUP 0x00000007
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/* 82559 Eeprom interface.
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*/
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#define EE_SHIFT_CLK 0x01 /* EEPROM shift clock. */
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#define EE_CS 0x02 /* EEPROM chip select. */
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#define EE_DATA_WRITE 0x04 /* EEPROM chip data in. */
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#define EE_WRITE_0 0x01
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#define EE_WRITE_1 0x05
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#define EE_DATA_READ 0x08 /* EEPROM chip data out. */
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#define EE_ENB (0x4800 | EE_CS)
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#define EE_CMD_BITS 3
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#define EE_DATA_BITS 16
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/* The EEPROM commands include the alway-set leading bit.
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*/
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#define EE_EWENB_CMD (4 << addr_len)
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#define EE_WRITE_CMD (5 << addr_len)
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#define EE_READ_CMD (6 << addr_len)
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#define EE_ERASE_CMD (7 << addr_len)
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/* Receive frame descriptors.
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*/
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struct RxFD {
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volatile u16 status;
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volatile u16 control;
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volatile u32 link; /* struct RxFD * */
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volatile u32 rx_buf_addr; /* void * */
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volatile u32 count;
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volatile u8 data[PKTSIZE_ALIGN];
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};
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#define RFD_STATUS_C 0x8000 /* completion of received frame */
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#define RFD_STATUS_OK 0x2000 /* frame received with no errors */
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#define RFD_CONTROL_EL 0x8000 /* 1=last RFD in RFA */
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#define RFD_CONTROL_S 0x4000 /* 1=suspend RU after receiving frame */
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#define RFD_CONTROL_H 0x0010 /* 1=RFD is a header RFD */
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#define RFD_CONTROL_SF 0x0008 /* 0=simplified, 1=flexible mode */
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#define RFD_COUNT_MASK 0x3fff
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#define RFD_COUNT_F 0x4000
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#define RFD_COUNT_EOF 0x8000
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#define RFD_RX_CRC 0x0800 /* crc error */
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#define RFD_RX_ALIGNMENT 0x0400 /* alignment error */
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#define RFD_RX_RESOURCE 0x0200 /* out of space, no resources */
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#define RFD_RX_DMA_OVER 0x0100 /* DMA overrun */
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#define RFD_RX_SHORT 0x0080 /* short frame error */
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#define RFD_RX_LENGTH 0x0020
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#define RFD_RX_ERROR 0x0010 /* receive error */
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#define RFD_RX_NO_ADR_MATCH 0x0004 /* no address match */
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#define RFD_RX_IA_MATCH 0x0002 /* individual address does not match */
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#define RFD_RX_TCO 0x0001 /* TCO indication */
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/* Transmit frame descriptors
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*/
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struct TxFD { /* Transmit frame descriptor set. */
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volatile u16 status;
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volatile u16 command;
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volatile u32 link; /* void * */
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volatile u32 tx_desc_addr; /* Always points to the tx_buf_addr element. */
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volatile s32 count;
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volatile u32 tx_buf_addr0; /* void *, frame to be transmitted. */
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volatile s32 tx_buf_size0; /* Length of Tx frame. */
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volatile u32 tx_buf_addr1; /* void *, frame to be transmitted. */
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volatile s32 tx_buf_size1; /* Length of Tx frame. */
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};
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#define TxCB_CMD_TRANSMIT 0x0004 /* transmit command */
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#define TxCB_CMD_SF 0x0008 /* 0=simplified, 1=flexible mode */
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#define TxCB_CMD_NC 0x0010 /* 0=CRC insert by controller */
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#define TxCB_CMD_I 0x2000 /* generate interrupt on completion */
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#define TxCB_CMD_S 0x4000 /* suspend on completion */
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#define TxCB_CMD_EL 0x8000 /* last command block in CBL */
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#define TxCB_COUNT_MASK 0x3fff
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#define TxCB_COUNT_EOF 0x8000
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/* The Speedo3 Rx and Tx frame/buffer descriptors.
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*/
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struct descriptor { /* A generic descriptor. */
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volatile u16 status;
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volatile u16 command;
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volatile u32 link; /* struct descriptor * */
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unsigned char params[0];
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};
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#define CONFIG_SYS_CMD_EL 0x8000
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#define CONFIG_SYS_CMD_SUSPEND 0x4000
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#define CONFIG_SYS_CMD_INT 0x2000
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#define CONFIG_SYS_CMD_IAS 0x0001 /* individual address setup */
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#define CONFIG_SYS_CMD_CONFIGURE 0x0002 /* configure */
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#define CONFIG_SYS_STATUS_C 0x8000
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#define CONFIG_SYS_STATUS_OK 0x2000
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/* Misc.
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*/
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#define NUM_RX_DESC PKTBUFSRX
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#define NUM_TX_DESC 1 /* Number of TX descriptors */
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#define TOUT_LOOP 1000000
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#define ETH_ALEN 6
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static struct RxFD rx_ring[NUM_RX_DESC]; /* RX descriptor ring */
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static struct TxFD tx_ring[NUM_TX_DESC]; /* TX descriptor ring */
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static int rx_next; /* RX descriptor ring pointer */
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static int tx_next; /* TX descriptor ring pointer */
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static int tx_threshold;
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/*
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* The parameters for a CmdConfigure operation.
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* There are so many options that it would be difficult to document
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* each bit. We mostly use the default or recommended settings.
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*/
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static const char i82558_config_cmd[] = {
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22, 0x08, 0, 1, 0, 0, 0x22, 0x03, 1, /* 1=Use MII 0=Use AUI */
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0, 0x2E, 0, 0x60, 0x08, 0x88,
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0x68, 0, 0x40, 0xf2, 0x84, /* Disable FC */
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0x31, 0x05,
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};
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static void init_rx_ring (struct eth_device *dev);
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static void purge_tx_ring (struct eth_device *dev);
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static void read_hw_addr (struct eth_device *dev, bd_t * bis);
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static int eepro100_init (struct eth_device *dev, bd_t * bis);
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static int eepro100_send(struct eth_device *dev, void *packet, int length);
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static int eepro100_recv (struct eth_device *dev);
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static void eepro100_halt (struct eth_device *dev);
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#if defined(CONFIG_E500)
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#define bus_to_phys(a) (a)
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#define phys_to_bus(a) (a)
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#else
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#define bus_to_phys(a) pci_mem_to_phys((pci_dev_t)dev->priv, a)
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#define phys_to_bus(a) pci_phys_to_mem((pci_dev_t)dev->priv, a)
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#endif
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static inline int INW (struct eth_device *dev, u_long addr)
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{
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return le16_to_cpu(*(volatile u16 *)(addr + (u_long)dev->iobase));
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}
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static inline void OUTW (struct eth_device *dev, int command, u_long addr)
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{
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*(volatile u16 *)((addr + (u_long)dev->iobase)) = cpu_to_le16(command);
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}
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static inline void OUTL (struct eth_device *dev, int command, u_long addr)
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{
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*(volatile u32 *)((addr + (u_long)dev->iobase)) = cpu_to_le32(command);
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}
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#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
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static inline int INL (struct eth_device *dev, u_long addr)
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{
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return le32_to_cpu(*(volatile u32 *)(addr + (u_long)dev->iobase));
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}
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static int get_phyreg (struct eth_device *dev, unsigned char addr,
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unsigned char reg, unsigned short *value)
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{
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int cmd;
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int timeout = 50;
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/* read requested data */
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cmd = (2 << 26) | ((addr & 0x1f) << 21) | ((reg & 0x1f) << 16);
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OUTL (dev, cmd, SCBCtrlMDI);
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do {
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udelay(1000);
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cmd = INL (dev, SCBCtrlMDI);
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} while (!(cmd & (1 << 28)) && (--timeout));
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if (timeout == 0)
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return -1;
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*value = (unsigned short) (cmd & 0xffff);
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return 0;
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}
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static int set_phyreg (struct eth_device *dev, unsigned char addr,
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unsigned char reg, unsigned short value)
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{
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int cmd;
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int timeout = 50;
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/* write requested data */
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cmd = (1 << 26) | ((addr & 0x1f) << 21) | ((reg & 0x1f) << 16);
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OUTL (dev, cmd | value, SCBCtrlMDI);
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while (!(INL (dev, SCBCtrlMDI) & (1 << 28)) && (--timeout))
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udelay(1000);
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if (timeout == 0)
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return -1;
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return 0;
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}
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/* Check if given phyaddr is valid, i.e. there is a PHY connected.
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* Do this by checking model value field from ID2 register.
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*/
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static struct eth_device* verify_phyaddr (const char *devname,
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unsigned char addr)
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{
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struct eth_device *dev;
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unsigned short value;
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unsigned char model;
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dev = eth_get_dev_by_name(devname);
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if (dev == NULL) {
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printf("%s: no such device\n", devname);
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return NULL;
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}
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/* read id2 register */
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if (get_phyreg(dev, addr, MII_PHYSID2, &value) != 0) {
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printf("%s: mii read timeout!\n", devname);
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return NULL;
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}
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/* get model */
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model = (unsigned char)((value >> 4) & 0x003f);
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if (model == 0) {
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printf("%s: no PHY at address %d\n", devname, addr);
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return NULL;
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}
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return dev;
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}
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static int eepro100_miiphy_read(struct mii_dev *bus, int addr, int devad,
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int reg)
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{
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unsigned short value = 0;
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struct eth_device *dev;
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dev = verify_phyaddr(bus->name, addr);
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if (dev == NULL)
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return -1;
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if (get_phyreg(dev, addr, reg, &value) != 0) {
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printf("%s: mii read timeout!\n", bus->name);
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return -1;
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}
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return value;
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}
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static int eepro100_miiphy_write(struct mii_dev *bus, int addr, int devad,
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int reg, u16 value)
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{
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struct eth_device *dev;
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dev = verify_phyaddr(bus->name, addr);
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if (dev == NULL)
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return -1;
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if (set_phyreg(dev, addr, reg, value) != 0) {
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printf("%s: mii write timeout!\n", bus->name);
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return -1;
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}
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return 0;
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}
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#endif
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/* Wait for the chip get the command.
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*/
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static int wait_for_eepro100 (struct eth_device *dev)
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{
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int i;
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for (i = 0; INW (dev, SCBCmd) & (CU_CMD_MASK | RU_CMD_MASK); i++) {
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if (i >= TOUT_LOOP) {
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return 0;
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}
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}
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return 1;
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}
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static struct pci_device_id supported[] = {
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{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82557},
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{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82559},
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{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82559ER},
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{}
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};
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int eepro100_initialize (bd_t * bis)
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{
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pci_dev_t devno;
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int card_number = 0;
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struct eth_device *dev;
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u32 iobase, status;
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int idx = 0;
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while (1) {
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/* Find PCI device
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*/
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if ((devno = pci_find_devices (supported, idx++)) < 0) {
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break;
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}
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pci_read_config_dword (devno, PCI_BASE_ADDRESS_0, &iobase);
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iobase &= ~0xf;
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#ifdef DEBUG
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printf ("eepro100: Intel i82559 PCI EtherExpressPro @0x%x\n",
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iobase);
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#endif
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pci_write_config_dword (devno,
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PCI_COMMAND,
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PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
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/* Check if I/O accesses and Bus Mastering are enabled.
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*/
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pci_read_config_dword (devno, PCI_COMMAND, &status);
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if (!(status & PCI_COMMAND_MEMORY)) {
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printf ("Error: Can not enable MEM access.\n");
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continue;
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}
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if (!(status & PCI_COMMAND_MASTER)) {
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printf ("Error: Can not enable Bus Mastering.\n");
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continue;
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}
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dev = (struct eth_device *) malloc (sizeof *dev);
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if (!dev) {
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printf("eepro100: Can not allocate memory\n");
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break;
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}
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memset(dev, 0, sizeof(*dev));
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sprintf (dev->name, "i82559#%d", card_number);
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dev->priv = (void *) devno; /* this have to come before bus_to_phys() */
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dev->iobase = bus_to_phys (iobase);
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dev->init = eepro100_init;
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dev->halt = eepro100_halt;
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dev->send = eepro100_send;
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dev->recv = eepro100_recv;
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eth_register (dev);
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#if defined (CONFIG_MII) || defined(CONFIG_CMD_MII)
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/* register mii command access routines */
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int retval;
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struct mii_dev *mdiodev = mdio_alloc();
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if (!mdiodev)
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return -ENOMEM;
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strncpy(mdiodev->name, dev->name, MDIO_NAME_LEN);
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mdiodev->read = eepro100_miiphy_read;
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mdiodev->write = eepro100_miiphy_write;
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retval = mdio_register(mdiodev);
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if (retval < 0)
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return retval;
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#endif
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card_number++;
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/* Set the latency timer for value.
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*/
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pci_write_config_byte (devno, PCI_LATENCY_TIMER, 0x20);
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udelay (10 * 1000);
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read_hw_addr (dev, bis);
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}
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return card_number;
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}
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static int eepro100_init (struct eth_device *dev, bd_t * bis)
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{
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int i, status = -1;
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int tx_cur;
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struct descriptor *ias_cmd, *cfg_cmd;
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/* Reset the ethernet controller
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*/
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OUTL (dev, I82559_SELECTIVE_RESET, SCBPort);
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udelay (20);
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OUTL (dev, I82559_RESET, SCBPort);
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udelay (20);
|
|
|
|
if (!wait_for_eepro100 (dev)) {
|
|
printf ("Error: Can not reset ethernet controller.\n");
|
|
goto Done;
|
|
}
|
|
OUTL (dev, 0, SCBPointer);
|
|
OUTW (dev, SCB_M | RUC_ADDR_LOAD, SCBCmd);
|
|
|
|
if (!wait_for_eepro100 (dev)) {
|
|
printf ("Error: Can not reset ethernet controller.\n");
|
|
goto Done;
|
|
}
|
|
OUTL (dev, 0, SCBPointer);
|
|
OUTW (dev, SCB_M | CU_ADDR_LOAD, SCBCmd);
|
|
|
|
/* Initialize Rx and Tx rings.
|
|
*/
|
|
init_rx_ring (dev);
|
|
purge_tx_ring (dev);
|
|
|
|
/* Tell the adapter where the RX ring is located.
|
|
*/
|
|
if (!wait_for_eepro100 (dev)) {
|
|
printf ("Error: Can not reset ethernet controller.\n");
|
|
goto Done;
|
|
}
|
|
|
|
OUTL (dev, phys_to_bus ((u32) & rx_ring[rx_next]), SCBPointer);
|
|
OUTW (dev, SCB_M | RUC_START, SCBCmd);
|
|
|
|
/* Send the Configure frame */
|
|
tx_cur = tx_next;
|
|
tx_next = ((tx_next + 1) % NUM_TX_DESC);
|
|
|
|
cfg_cmd = (struct descriptor *) &tx_ring[tx_cur];
|
|
cfg_cmd->command = cpu_to_le16 ((CONFIG_SYS_CMD_SUSPEND | CONFIG_SYS_CMD_CONFIGURE));
|
|
cfg_cmd->status = 0;
|
|
cfg_cmd->link = cpu_to_le32 (phys_to_bus ((u32) & tx_ring[tx_next]));
|
|
|
|
memcpy (cfg_cmd->params, i82558_config_cmd,
|
|
sizeof (i82558_config_cmd));
|
|
|
|
if (!wait_for_eepro100 (dev)) {
|
|
printf ("Error---CONFIG_SYS_CMD_CONFIGURE: Can not reset ethernet controller.\n");
|
|
goto Done;
|
|
}
|
|
|
|
OUTL (dev, phys_to_bus ((u32) & tx_ring[tx_cur]), SCBPointer);
|
|
OUTW (dev, SCB_M | CU_START, SCBCmd);
|
|
|
|
for (i = 0;
|
|
!(le16_to_cpu (tx_ring[tx_cur].status) & CONFIG_SYS_STATUS_C);
|
|
i++) {
|
|
if (i >= TOUT_LOOP) {
|
|
printf ("%s: Tx error buffer not ready\n", dev->name);
|
|
goto Done;
|
|
}
|
|
}
|
|
|
|
if (!(le16_to_cpu (tx_ring[tx_cur].status) & CONFIG_SYS_STATUS_OK)) {
|
|
printf ("TX error status = 0x%08X\n",
|
|
le16_to_cpu (tx_ring[tx_cur].status));
|
|
goto Done;
|
|
}
|
|
|
|
/* Send the Individual Address Setup frame
|
|
*/
|
|
tx_cur = tx_next;
|
|
tx_next = ((tx_next + 1) % NUM_TX_DESC);
|
|
|
|
ias_cmd = (struct descriptor *) &tx_ring[tx_cur];
|
|
ias_cmd->command = cpu_to_le16 ((CONFIG_SYS_CMD_SUSPEND | CONFIG_SYS_CMD_IAS));
|
|
ias_cmd->status = 0;
|
|
ias_cmd->link = cpu_to_le32 (phys_to_bus ((u32) & tx_ring[tx_next]));
|
|
|
|
memcpy (ias_cmd->params, dev->enetaddr, 6);
|
|
|
|
/* Tell the adapter where the TX ring is located.
|
|
*/
|
|
if (!wait_for_eepro100 (dev)) {
|
|
printf ("Error: Can not reset ethernet controller.\n");
|
|
goto Done;
|
|
}
|
|
|
|
OUTL (dev, phys_to_bus ((u32) & tx_ring[tx_cur]), SCBPointer);
|
|
OUTW (dev, SCB_M | CU_START, SCBCmd);
|
|
|
|
for (i = 0; !(le16_to_cpu (tx_ring[tx_cur].status) & CONFIG_SYS_STATUS_C);
|
|
i++) {
|
|
if (i >= TOUT_LOOP) {
|
|
printf ("%s: Tx error buffer not ready\n",
|
|
dev->name);
|
|
goto Done;
|
|
}
|
|
}
|
|
|
|
if (!(le16_to_cpu (tx_ring[tx_cur].status) & CONFIG_SYS_STATUS_OK)) {
|
|
printf ("TX error status = 0x%08X\n",
|
|
le16_to_cpu (tx_ring[tx_cur].status));
|
|
goto Done;
|
|
}
|
|
|
|
status = 0;
|
|
|
|
Done:
|
|
return status;
|
|
}
|
|
|
|
static int eepro100_send(struct eth_device *dev, void *packet, int length)
|
|
{
|
|
int i, status = -1;
|
|
int tx_cur;
|
|
|
|
if (length <= 0) {
|
|
printf ("%s: bad packet size: %d\n", dev->name, length);
|
|
goto Done;
|
|
}
|
|
|
|
tx_cur = tx_next;
|
|
tx_next = (tx_next + 1) % NUM_TX_DESC;
|
|
|
|
tx_ring[tx_cur].command = cpu_to_le16 ( TxCB_CMD_TRANSMIT |
|
|
TxCB_CMD_SF |
|
|
TxCB_CMD_S |
|
|
TxCB_CMD_EL );
|
|
tx_ring[tx_cur].status = 0;
|
|
tx_ring[tx_cur].count = cpu_to_le32 (tx_threshold);
|
|
tx_ring[tx_cur].link =
|
|
cpu_to_le32 (phys_to_bus ((u32) & tx_ring[tx_next]));
|
|
tx_ring[tx_cur].tx_desc_addr =
|
|
cpu_to_le32 (phys_to_bus ((u32) & tx_ring[tx_cur].tx_buf_addr0));
|
|
tx_ring[tx_cur].tx_buf_addr0 =
|
|
cpu_to_le32 (phys_to_bus ((u_long) packet));
|
|
tx_ring[tx_cur].tx_buf_size0 = cpu_to_le32 (length);
|
|
|
|
if (!wait_for_eepro100 (dev)) {
|
|
printf ("%s: Tx error ethernet controller not ready.\n",
|
|
dev->name);
|
|
goto Done;
|
|
}
|
|
|
|
/* Send the packet.
|
|
*/
|
|
OUTL (dev, phys_to_bus ((u32) & tx_ring[tx_cur]), SCBPointer);
|
|
OUTW (dev, SCB_M | CU_START, SCBCmd);
|
|
|
|
for (i = 0; !(le16_to_cpu (tx_ring[tx_cur].status) & CONFIG_SYS_STATUS_C);
|
|
i++) {
|
|
if (i >= TOUT_LOOP) {
|
|
printf ("%s: Tx error buffer not ready\n", dev->name);
|
|
goto Done;
|
|
}
|
|
}
|
|
|
|
if (!(le16_to_cpu (tx_ring[tx_cur].status) & CONFIG_SYS_STATUS_OK)) {
|
|
printf ("TX error status = 0x%08X\n",
|
|
le16_to_cpu (tx_ring[tx_cur].status));
|
|
goto Done;
|
|
}
|
|
|
|
status = length;
|
|
|
|
Done:
|
|
return status;
|
|
}
|
|
|
|
static int eepro100_recv (struct eth_device *dev)
|
|
{
|
|
u16 status, stat;
|
|
int rx_prev, length = 0;
|
|
|
|
stat = INW (dev, SCBStatus);
|
|
OUTW (dev, stat & SCB_STATUS_RNR, SCBStatus);
|
|
|
|
for (;;) {
|
|
status = le16_to_cpu (rx_ring[rx_next].status);
|
|
|
|
if (!(status & RFD_STATUS_C)) {
|
|
break;
|
|
}
|
|
|
|
/* Valid frame status.
|
|
*/
|
|
if ((status & RFD_STATUS_OK)) {
|
|
/* A valid frame received.
|
|
*/
|
|
length = le32_to_cpu (rx_ring[rx_next].count) & 0x3fff;
|
|
|
|
/* Pass the packet up to the protocol
|
|
* layers.
|
|
*/
|
|
net_process_received_packet((u8 *)rx_ring[rx_next].data,
|
|
length);
|
|
} else {
|
|
/* There was an error.
|
|
*/
|
|
printf ("RX error status = 0x%08X\n", status);
|
|
}
|
|
|
|
rx_ring[rx_next].control = cpu_to_le16 (RFD_CONTROL_S);
|
|
rx_ring[rx_next].status = 0;
|
|
rx_ring[rx_next].count = cpu_to_le32 (PKTSIZE_ALIGN << 16);
|
|
|
|
rx_prev = (rx_next + NUM_RX_DESC - 1) % NUM_RX_DESC;
|
|
rx_ring[rx_prev].control = 0;
|
|
|
|
/* Update entry information.
|
|
*/
|
|
rx_next = (rx_next + 1) % NUM_RX_DESC;
|
|
}
|
|
|
|
if (stat & SCB_STATUS_RNR) {
|
|
|
|
printf ("%s: Receiver is not ready, restart it !\n", dev->name);
|
|
|
|
/* Reinitialize Rx ring.
|
|
*/
|
|
init_rx_ring (dev);
|
|
|
|
if (!wait_for_eepro100 (dev)) {
|
|
printf ("Error: Can not restart ethernet controller.\n");
|
|
goto Done;
|
|
}
|
|
|
|
OUTL (dev, phys_to_bus ((u32) & rx_ring[rx_next]), SCBPointer);
|
|
OUTW (dev, SCB_M | RUC_START, SCBCmd);
|
|
}
|
|
|
|
Done:
|
|
return length;
|
|
}
|
|
|
|
static void eepro100_halt (struct eth_device *dev)
|
|
{
|
|
/* Reset the ethernet controller
|
|
*/
|
|
OUTL (dev, I82559_SELECTIVE_RESET, SCBPort);
|
|
udelay (20);
|
|
|
|
OUTL (dev, I82559_RESET, SCBPort);
|
|
udelay (20);
|
|
|
|
if (!wait_for_eepro100 (dev)) {
|
|
printf ("Error: Can not reset ethernet controller.\n");
|
|
goto Done;
|
|
}
|
|
OUTL (dev, 0, SCBPointer);
|
|
OUTW (dev, SCB_M | RUC_ADDR_LOAD, SCBCmd);
|
|
|
|
if (!wait_for_eepro100 (dev)) {
|
|
printf ("Error: Can not reset ethernet controller.\n");
|
|
goto Done;
|
|
}
|
|
OUTL (dev, 0, SCBPointer);
|
|
OUTW (dev, SCB_M | CU_ADDR_LOAD, SCBCmd);
|
|
|
|
Done:
|
|
return;
|
|
}
|
|
|
|
/* SROM Read.
|
|
*/
|
|
static int read_eeprom (struct eth_device *dev, int location, int addr_len)
|
|
{
|
|
unsigned short retval = 0;
|
|
int read_cmd = location | EE_READ_CMD;
|
|
int i;
|
|
|
|
OUTW (dev, EE_ENB & ~EE_CS, SCBeeprom);
|
|
OUTW (dev, EE_ENB, SCBeeprom);
|
|
|
|
/* Shift the read command bits out. */
|
|
for (i = 12; i >= 0; i--) {
|
|
short dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
|
|
|
|
OUTW (dev, EE_ENB | dataval, SCBeeprom);
|
|
udelay (1);
|
|
OUTW (dev, EE_ENB | dataval | EE_SHIFT_CLK, SCBeeprom);
|
|
udelay (1);
|
|
}
|
|
OUTW (dev, EE_ENB, SCBeeprom);
|
|
|
|
for (i = 15; i >= 0; i--) {
|
|
OUTW (dev, EE_ENB | EE_SHIFT_CLK, SCBeeprom);
|
|
udelay (1);
|
|
retval = (retval << 1) |
|
|
((INW (dev, SCBeeprom) & EE_DATA_READ) ? 1 : 0);
|
|
OUTW (dev, EE_ENB, SCBeeprom);
|
|
udelay (1);
|
|
}
|
|
|
|
/* Terminate the EEPROM access. */
|
|
OUTW (dev, EE_ENB & ~EE_CS, SCBeeprom);
|
|
return retval;
|
|
}
|
|
|
|
#ifdef CONFIG_EEPRO100_SROM_WRITE
|
|
int eepro100_write_eeprom (struct eth_device* dev, int location, int addr_len, unsigned short data)
|
|
{
|
|
unsigned short dataval;
|
|
int enable_cmd = 0x3f | EE_EWENB_CMD;
|
|
int write_cmd = location | EE_WRITE_CMD;
|
|
int i;
|
|
unsigned long datalong, tmplong;
|
|
|
|
OUTW(dev, EE_ENB & ~EE_CS, SCBeeprom);
|
|
udelay(1);
|
|
OUTW(dev, EE_ENB, SCBeeprom);
|
|
|
|
/* Shift the enable command bits out. */
|
|
for (i = (addr_len+EE_CMD_BITS-1); i >= 0; i--)
|
|
{
|
|
dataval = (enable_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
|
|
OUTW(dev, EE_ENB | dataval, SCBeeprom);
|
|
udelay(1);
|
|
OUTW(dev, EE_ENB | dataval | EE_SHIFT_CLK, SCBeeprom);
|
|
udelay(1);
|
|
}
|
|
|
|
OUTW(dev, EE_ENB, SCBeeprom);
|
|
udelay(1);
|
|
OUTW(dev, EE_ENB & ~EE_CS, SCBeeprom);
|
|
udelay(1);
|
|
OUTW(dev, EE_ENB, SCBeeprom);
|
|
|
|
|
|
/* Shift the write command bits out. */
|
|
for (i = (addr_len+EE_CMD_BITS-1); i >= 0; i--)
|
|
{
|
|
dataval = (write_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
|
|
OUTW(dev, EE_ENB | dataval, SCBeeprom);
|
|
udelay(1);
|
|
OUTW(dev, EE_ENB | dataval | EE_SHIFT_CLK, SCBeeprom);
|
|
udelay(1);
|
|
}
|
|
|
|
/* Write the data */
|
|
datalong= (unsigned long) ((((data) & 0x00ff) << 8) | ( (data) >> 8));
|
|
|
|
for (i = 0; i< EE_DATA_BITS; i++)
|
|
{
|
|
/* Extract and move data bit to bit DI */
|
|
dataval = ((datalong & 0x8000)>>13) ? EE_DATA_WRITE : 0;
|
|
|
|
OUTW(dev, EE_ENB | dataval, SCBeeprom);
|
|
udelay(1);
|
|
OUTW(dev, EE_ENB | dataval | EE_SHIFT_CLK, SCBeeprom);
|
|
udelay(1);
|
|
OUTW(dev, EE_ENB | dataval, SCBeeprom);
|
|
udelay(1);
|
|
|
|
datalong = datalong << 1; /* Adjust significant data bit*/
|
|
}
|
|
|
|
/* Finish up command (toggle CS) */
|
|
OUTW(dev, EE_ENB & ~EE_CS, SCBeeprom);
|
|
udelay(1); /* delay for more than 250 ns */
|
|
OUTW(dev, EE_ENB, SCBeeprom);
|
|
|
|
/* Wait for programming ready (D0 = 1) */
|
|
tmplong = 10;
|
|
do
|
|
{
|
|
dataval = INW(dev, SCBeeprom);
|
|
if (dataval & EE_DATA_READ)
|
|
break;
|
|
udelay(10000);
|
|
}
|
|
while (-- tmplong);
|
|
|
|
if (tmplong == 0)
|
|
{
|
|
printf ("Write i82559 eeprom timed out (100 ms waiting for data ready.\n");
|
|
return -1;
|
|
}
|
|
|
|
/* Terminate the EEPROM access. */
|
|
OUTW(dev, EE_ENB & ~EE_CS, SCBeeprom);
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static void init_rx_ring (struct eth_device *dev)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < NUM_RX_DESC; i++) {
|
|
rx_ring[i].status = 0;
|
|
rx_ring[i].control =
|
|
(i == NUM_RX_DESC - 1) ? cpu_to_le16 (RFD_CONTROL_S) : 0;
|
|
rx_ring[i].link =
|
|
cpu_to_le32 (phys_to_bus
|
|
((u32) & rx_ring[(i + 1) % NUM_RX_DESC]));
|
|
rx_ring[i].rx_buf_addr = 0xffffffff;
|
|
rx_ring[i].count = cpu_to_le32 (PKTSIZE_ALIGN << 16);
|
|
}
|
|
|
|
rx_next = 0;
|
|
}
|
|
|
|
static void purge_tx_ring (struct eth_device *dev)
|
|
{
|
|
int i;
|
|
|
|
tx_next = 0;
|
|
tx_threshold = 0x01208000;
|
|
|
|
for (i = 0; i < NUM_TX_DESC; i++) {
|
|
tx_ring[i].status = 0;
|
|
tx_ring[i].command = 0;
|
|
tx_ring[i].link = 0;
|
|
tx_ring[i].tx_desc_addr = 0;
|
|
tx_ring[i].count = 0;
|
|
|
|
tx_ring[i].tx_buf_addr0 = 0;
|
|
tx_ring[i].tx_buf_size0 = 0;
|
|
tx_ring[i].tx_buf_addr1 = 0;
|
|
tx_ring[i].tx_buf_size1 = 0;
|
|
}
|
|
}
|
|
|
|
static void read_hw_addr (struct eth_device *dev, bd_t * bis)
|
|
{
|
|
u16 sum = 0;
|
|
int i, j;
|
|
int addr_len = read_eeprom (dev, 0, 6) == 0xffff ? 8 : 6;
|
|
|
|
for (j = 0, i = 0; i < 0x40; i++) {
|
|
u16 value = read_eeprom (dev, i, addr_len);
|
|
|
|
sum += value;
|
|
if (i < 3) {
|
|
dev->enetaddr[j++] = value;
|
|
dev->enetaddr[j++] = value >> 8;
|
|
}
|
|
}
|
|
|
|
if (sum != 0xBABA) {
|
|
memset (dev->enetaddr, 0, ETH_ALEN);
|
|
#ifdef DEBUG
|
|
printf ("%s: Invalid EEPROM checksum %#4.4x, "
|
|
"check settings before activating this device!\n",
|
|
dev->name, sum);
|
|
#endif
|
|
}
|
|
}
|