Commit 3ceba1d4 authored by Michal Simek's avatar Michal Simek
Browse files

net: Remove old Xilinx Emac driver


Signed-off-by: default avatarMichal Simek <monstr@monstr.eu>
parent 2fddd444
......@@ -72,7 +72,6 @@ COBJS-$(CONFIG_TSEC_ENET) += tsec.o
COBJS-$(CONFIG_TSI108_ETH) += tsi108_eth.o
COBJS-$(CONFIG_ULI526X) += uli526x.o
COBJS-$(CONFIG_VSC7385_ENET) += vsc7385.o
COBJS-$(CONFIG_XILINX_EMAC) += xilinx_emac.o
COBJS-$(CONFIG_XILINX_EMACLITE) += xilinx_emaclite.o
COBJS := $(COBJS-y)
......
/******************************************************************************
*
* XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS"
* AS A COURTESY TO YOU, SOLELY FOR USE IN DEVELOPING PROGRAMS AND
* SOLUTIONS FOR XILINX DEVICES. BY PROVIDING THIS DESIGN, CODE,
* OR INFORMATION AS ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE,
* APPLICATION OR STANDARD, XILINX IS MAKING NO REPRESENTATION
* THAT THIS IMPLEMENTATION IS FREE FROM ANY CLAIMS OF INFRINGEMENT,
* AND YOU ARE RESPONSIBLE FOR OBTAINING ANY RIGHTS YOU MAY REQUIRE
* FOR YOUR IMPLEMENTATION. XILINX EXPRESSLY DISCLAIMS ANY
* WARRANTY WHATSOEVER WITH RESPECT TO THE ADEQUACY OF THE
* IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OR
* REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM CLAIMS OF
* INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE.
*
* (C) Copyright 2007-2008 Michal Simek
* Michal SIMEK <monstr@monstr.eu>
*
* (c) Copyright 2003 Xilinx Inc.
* All rights reserved.
*
******************************************************************************/
#include <config.h>
#include <common.h>
#include <net.h>
#include <asm/io.h>
#include <asm/asm.h>
#undef DEBUG
typedef struct {
u32 regbaseaddress; /* Base address of registers */
u32 databaseaddress; /* Base address of data for FIFOs */
} xpacketfifov100b;
typedef struct {
u32 baseaddress; /* Base address (of IPIF) */
u32 isstarted; /* Device is currently started 0-no, 1-yes */
xpacketfifov100b recvfifo; /* FIFO used to receive frames */
xpacketfifov100b sendfifo; /* FIFO used to send frames */
} xemac;
#define XIIF_V123B_IISR_OFFSET 32UL /* IP interrupt status register */
#define XIIF_V123B_RESET_MASK 0xAUL
#define XIIF_V123B_RESETR_OFFSET 64UL /* reset register */
/* This constant is used with the Reset Register */
#define XPF_RESET_FIFO_MASK 0x0000000A
#define XPF_COUNT_STATUS_REG_OFFSET 4UL
/* These constants are used with the Occupancy/Vacancy Count Register. This
* register also contains FIFO status */
#define XPF_COUNT_MASK 0x0000FFFF
#define XPF_DEADLOCK_MASK 0x20000000
/* Offset of the MAC registers from the IPIF base address */
#define XEM_REG_OFFSET 0x1100UL
/*
* Register offsets for the Ethernet MAC. Each register is 32 bits.
*/
#define XEM_ECR_OFFSET (XEM_REG_OFFSET + 0x4) /* MAC Control */
#define XEM_SAH_OFFSET (XEM_REG_OFFSET + 0xC) /* Station addr, high */
#define XEM_SAL_OFFSET (XEM_REG_OFFSET + 0x10) /* Station addr, low */
#define XEM_RPLR_OFFSET (XEM_REG_OFFSET + 0x1C) /* Rx packet length */
#define XEM_TPLR_OFFSET (XEM_REG_OFFSET + 0x20) /* Tx packet length */
#define XEM_TSR_OFFSET (XEM_REG_OFFSET + 0x24) /* Tx status */
#define XEM_PFIFO_OFFSET 0x2000UL
/* Tx registers */
#define XEM_PFIFO_TXREG_OFFSET (XEM_PFIFO_OFFSET + 0x0)
/* Rx registers */
#define XEM_PFIFO_RXREG_OFFSET (XEM_PFIFO_OFFSET + 0x10)
/* Tx keyhole */
#define XEM_PFIFO_TXDATA_OFFSET (XEM_PFIFO_OFFSET + 0x100)
/* Rx keyhole */
#define XEM_PFIFO_RXDATA_OFFSET (XEM_PFIFO_OFFSET + 0x200)
/*
* EMAC Interrupt Registers (Status and Enable) masks. These registers are
* part of the IPIF IP Interrupt registers
*/
/* A mask for all transmit interrupts, used in polled mode */
#define XEM_EIR_XMIT_ALL_MASK (XEM_EIR_XMIT_DONE_MASK |\
XEM_EIR_XMIT_ERROR_MASK | \
XEM_EIR_XMIT_SFIFO_EMPTY_MASK |\
XEM_EIR_XMIT_LFIFO_FULL_MASK)
/* Xmit complete */
#define XEM_EIR_XMIT_DONE_MASK 0x00000001UL
/* Recv complete */
#define XEM_EIR_RECV_DONE_MASK 0x00000002UL
/* Xmit error */
#define XEM_EIR_XMIT_ERROR_MASK 0x00000004UL
/* Recv error */
#define XEM_EIR_RECV_ERROR_MASK 0x00000008UL
/* Xmit status fifo empty */
#define XEM_EIR_XMIT_SFIFO_EMPTY_MASK 0x00000010UL
/* Recv length fifo empty */
#define XEM_EIR_RECV_LFIFO_EMPTY_MASK 0x00000020UL
/* Xmit length fifo full */
#define XEM_EIR_XMIT_LFIFO_FULL_MASK 0x00000040UL
/* Recv length fifo overrun */
#define XEM_EIR_RECV_LFIFO_OVER_MASK 0x00000080UL
/* Recv length fifo underrun */
#define XEM_EIR_RECV_LFIFO_UNDER_MASK 0x00000100UL
/* Xmit status fifo overrun */
#define XEM_EIR_XMIT_SFIFO_OVER_MASK 0x00000200UL
/* Transmit status fifo underrun */
#define XEM_EIR_XMIT_SFIFO_UNDER_MASK 0x00000400UL
/* Transmit length fifo overrun */
#define XEM_EIR_XMIT_LFIFO_OVER_MASK 0x00000800UL
/* Transmit length fifo underrun */
#define XEM_EIR_XMIT_LFIFO_UNDER_MASK 0x00001000UL
/* Transmit pause pkt received */
#define XEM_EIR_XMIT_PAUSE_MASK 0x00002000UL
/*
* EMAC Control Register (ECR)
*/
/* Full duplex mode */
#define XEM_ECR_FULL_DUPLEX_MASK 0x80000000UL
/* Reset transmitter */
#define XEM_ECR_XMIT_RESET_MASK 0x40000000UL
/* Enable transmitter */
#define XEM_ECR_XMIT_ENABLE_MASK 0x20000000UL
/* Reset receiver */
#define XEM_ECR_RECV_RESET_MASK 0x10000000UL
/* Enable receiver */
#define XEM_ECR_RECV_ENABLE_MASK 0x08000000UL
/* Enable PHY */
#define XEM_ECR_PHY_ENABLE_MASK 0x04000000UL
/* Enable xmit pad insert */
#define XEM_ECR_XMIT_PAD_ENABLE_MASK 0x02000000UL
/* Enable xmit FCS insert */
#define XEM_ECR_XMIT_FCS_ENABLE_MASK 0x01000000UL
/* Enable unicast addr */
#define XEM_ECR_UNICAST_ENABLE_MASK 0x00020000UL
/* Enable broadcast addr */
#define XEM_ECR_BROAD_ENABLE_MASK 0x00008000UL
/*
* Transmit Status Register (TSR)
*/
/* Transmit excess deferral */
#define XEM_TSR_EXCESS_DEFERRAL_MASK 0x80000000UL
/* Transmit late collision */
#define XEM_TSR_LATE_COLLISION_MASK 0x01000000UL
#define ENET_MAX_MTU PKTSIZE
#define ENET_ADDR_LENGTH 6
static unsigned int etherrxbuff[PKTSIZE_ALIGN/4]; /* Receive buffer */
static u8 emacaddr[ENET_ADDR_LENGTH] = { 0x00, 0x0a, 0x35, 0x00, 0x22, 0x01 };
static xemac emac;
void eth_halt(void)
{
debug ("eth_halt\n");
}
int eth_init(bd_t * bis)
{
uchar enetaddr[6];
u32 helpreg;
debug ("EMAC Initialization Started\n\r");
if (emac.isstarted) {
puts("Emac is started\n");
return 0;
}
memset (&emac, 0, sizeof (xemac));
emac.baseaddress = XILINX_EMAC_BASEADDR;
/* Setting up FIFOs */
emac.recvfifo.regbaseaddress = emac.baseaddress +
XEM_PFIFO_RXREG_OFFSET;
emac.recvfifo.databaseaddress = emac.baseaddress +
XEM_PFIFO_RXDATA_OFFSET;
out_be32 (emac.recvfifo.regbaseaddress, XPF_RESET_FIFO_MASK);
emac.sendfifo.regbaseaddress = emac.baseaddress +
XEM_PFIFO_TXREG_OFFSET;
emac.sendfifo.databaseaddress = emac.baseaddress +
XEM_PFIFO_TXDATA_OFFSET;
out_be32 (emac.sendfifo.regbaseaddress, XPF_RESET_FIFO_MASK);
/* Reset the entire IPIF */
out_be32 (emac.baseaddress + XIIF_V123B_RESETR_OFFSET,
XIIF_V123B_RESET_MASK);
/* Stopping EMAC for setting up MAC */
helpreg = in_be32 (emac.baseaddress + XEM_ECR_OFFSET);
helpreg &= ~(XEM_ECR_XMIT_ENABLE_MASK | XEM_ECR_RECV_ENABLE_MASK);
out_be32 (emac.baseaddress + XEM_ECR_OFFSET, helpreg);
if (!eth_getenv_enetaddr("ethaddr", enetaddr)) {
memcpy(enetaddr, emacaddr, ENET_ADDR_LENGTH);
eth_setenv_enetaddr("ethaddr", enetaddr);
}
/* Set the device station address high and low registers */
helpreg = (enetaddr[0] << 8) | enetaddr[1];
out_be32 (emac.baseaddress + XEM_SAH_OFFSET, helpreg);
helpreg = (enetaddr[2] << 24) | (enetaddr[3] << 16) |
(enetaddr[4] << 8) | enetaddr[5];
out_be32 (emac.baseaddress + XEM_SAL_OFFSET, helpreg);
helpreg = XEM_ECR_UNICAST_ENABLE_MASK | XEM_ECR_BROAD_ENABLE_MASK |
XEM_ECR_FULL_DUPLEX_MASK | XEM_ECR_XMIT_FCS_ENABLE_MASK |
XEM_ECR_XMIT_PAD_ENABLE_MASK | XEM_ECR_PHY_ENABLE_MASK;
out_be32 (emac.baseaddress + XEM_ECR_OFFSET, helpreg);
emac.isstarted = 1;
/* Enable the transmitter, and receiver */
helpreg = in_be32 (emac.baseaddress + XEM_ECR_OFFSET);
helpreg &= ~(XEM_ECR_XMIT_RESET_MASK | XEM_ECR_RECV_RESET_MASK);
helpreg |= (XEM_ECR_XMIT_ENABLE_MASK | XEM_ECR_RECV_ENABLE_MASK);
out_be32 (emac.baseaddress + XEM_ECR_OFFSET, helpreg);
printf("EMAC Initialization complete\n\r");
return 0;
}
int eth_send(volatile void *ptr, int len)
{
u32 intrstatus;
u32 xmitstatus;
u32 fifocount;
u32 wordcount;
u32 extrabytecount;
u32 *wordbuffer = (u32 *) ptr;
if (len > ENET_MAX_MTU)
len = ENET_MAX_MTU;
/*
* Check for overruns and underruns for the transmit status and length
* FIFOs and make sure the send packet FIFO is not deadlocked.
* Any of these conditions is bad enough that we do not want to
* continue. The upper layer software should reset the device to resolve
* the error.
*/
intrstatus = in_be32 ((emac.baseaddress) + XIIF_V123B_IISR_OFFSET);
if (intrstatus & (XEM_EIR_XMIT_SFIFO_OVER_MASK |
XEM_EIR_XMIT_LFIFO_OVER_MASK)) {
debug ("Transmitting overrun error\n");
return 0;
} else if (intrstatus & (XEM_EIR_XMIT_SFIFO_UNDER_MASK |
XEM_EIR_XMIT_LFIFO_UNDER_MASK)) {
debug ("Transmitting underrun error\n");
return 0;
} else if (in_be32 (emac.sendfifo.regbaseaddress +
XPF_COUNT_STATUS_REG_OFFSET) & XPF_DEADLOCK_MASK) {
debug ("Transmitting fifo error\n");
return 0;
}
/*
* Before writing to the data FIFO, make sure the length FIFO is not
* full. The data FIFO might not be full yet even though the length FIFO
* is. This avoids an overrun condition on the length FIFO and keeps the
* FIFOs in sync.
*
* Clear the latched LFIFO_FULL bit so next time around the most
* current status is represented
*/
if (intrstatus & XEM_EIR_XMIT_LFIFO_FULL_MASK) {
out_be32 ((emac.baseaddress) + XIIF_V123B_IISR_OFFSET,
intrstatus & XEM_EIR_XMIT_LFIFO_FULL_MASK);
debug ("Fifo is full\n");
return 0;
}
/* get the count of how many words may be inserted into the FIFO */
fifocount = in_be32 (emac.sendfifo.regbaseaddress +
XPF_COUNT_STATUS_REG_OFFSET) & XPF_COUNT_MASK;
wordcount = len >> 2;
extrabytecount = len & 0x3;
if (fifocount < wordcount) {
debug ("Sending packet is larger then size of FIFO\n");
return 0;
}
for (fifocount = 0; fifocount < wordcount; fifocount++) {
out_be32 (emac.sendfifo.databaseaddress, wordbuffer[fifocount]);
}
if (extrabytecount > 0) {
u32 lastword = 0;
u8 *extrabytesbuffer = (u8 *) (wordbuffer + wordcount);
if (extrabytecount == 1) {
lastword = extrabytesbuffer[0] << 24;
} else if (extrabytecount == 2) {
lastword = extrabytesbuffer[0] << 24 |
extrabytesbuffer[1] << 16;
} else if (extrabytecount == 3) {
lastword = extrabytesbuffer[0] << 24 |
extrabytesbuffer[1] << 16 |
extrabytesbuffer[2] << 8;
}
out_be32 (emac.sendfifo.databaseaddress, lastword);
}
/* Loop on the MAC's status to wait for any pause to complete */
intrstatus = in_be32 ((emac.baseaddress) + XIIF_V123B_IISR_OFFSET);
while ((intrstatus & XEM_EIR_XMIT_PAUSE_MASK) != 0) {
intrstatus = in_be32 ((emac.baseaddress) +
XIIF_V123B_IISR_OFFSET);
/* Clear the pause status from the transmit status register */
out_be32 ((emac.baseaddress) + XIIF_V123B_IISR_OFFSET,
intrstatus & XEM_EIR_XMIT_PAUSE_MASK);
}
/*
* Set the MAC's transmit packet length register to tell it to transmit
*/
out_be32 (emac.baseaddress + XEM_TPLR_OFFSET, len);
/*
* Loop on the MAC's status to wait for the transmit to complete.
* The transmit status is in the FIFO when the XMIT_DONE bit is set.
*/
do {
intrstatus = in_be32 ((emac.baseaddress) +
XIIF_V123B_IISR_OFFSET);
}
while ((intrstatus & XEM_EIR_XMIT_DONE_MASK) == 0);
xmitstatus = in_be32 (emac.baseaddress + XEM_TSR_OFFSET);
if (intrstatus & (XEM_EIR_XMIT_SFIFO_OVER_MASK |
XEM_EIR_XMIT_LFIFO_OVER_MASK)) {
debug ("Transmitting overrun error\n");
return 0;
} else if (intrstatus & (XEM_EIR_XMIT_SFIFO_UNDER_MASK |
XEM_EIR_XMIT_LFIFO_UNDER_MASK)) {
debug ("Transmitting underrun error\n");
return 0;
}
/* Clear the interrupt status register of transmit statuses */
out_be32 ((emac.baseaddress) + XIIF_V123B_IISR_OFFSET,
intrstatus & XEM_EIR_XMIT_ALL_MASK);
/*
* Collision errors are stored in the transmit status register
* instead of the interrupt status register
*/
if ((xmitstatus & XEM_TSR_EXCESS_DEFERRAL_MASK) ||
(xmitstatus & XEM_TSR_LATE_COLLISION_MASK)) {
debug ("Transmitting collision error\n");
return 0;
}
return 1;
}
int eth_rx(void)
{
u32 pktlength;
u32 intrstatus;
u32 fifocount;
u32 wordcount;
u32 extrabytecount;
u32 lastword;
u8 *extrabytesbuffer;
if (in_be32 (emac.recvfifo.regbaseaddress + XPF_COUNT_STATUS_REG_OFFSET)
& XPF_DEADLOCK_MASK) {
out_be32 (emac.recvfifo.regbaseaddress, XPF_RESET_FIFO_MASK);
debug ("Receiving FIFO deadlock\n");
return 0;
}
/*
* Get the interrupt status to know what happened (whether an error
* occurred and/or whether frames have been received successfully).
* When clearing the intr status register, clear only statuses that
* pertain to receive.
*/
intrstatus = in_be32 ((emac.baseaddress) + XIIF_V123B_IISR_OFFSET);
/*
* Before reading from the length FIFO, make sure the length FIFO is not
* empty. We could cause an underrun error if we try to read from an
* empty FIFO.
*/
if (!(intrstatus & XEM_EIR_RECV_DONE_MASK)) {
/* debug ("Receiving FIFO is empty\n"); */
return 0;
}
/*
* Determine, from the MAC, the length of the next packet available
* in the data FIFO (there should be a non-zero length here)
*/
pktlength = in_be32 (emac.baseaddress + XEM_RPLR_OFFSET);
if (!pktlength) {
return 0;
}
/*
* Write the RECV_DONE bit in the status register to clear it. This bit
* indicates the RPLR is non-empty, and we know it's set at this point.
* We clear it so that subsequent entry into this routine will reflect
* the current status. This is done because the non-empty bit is latched
* in the IPIF, which means it may indicate a non-empty condition even
* though there is something in the FIFO.
*/
out_be32 ((emac.baseaddress) + XIIF_V123B_IISR_OFFSET,
XEM_EIR_RECV_DONE_MASK);
fifocount = in_be32 (emac.recvfifo.regbaseaddress +
XPF_COUNT_STATUS_REG_OFFSET) & XPF_COUNT_MASK;
if ((fifocount * 4) < pktlength) {
debug ("Receiving FIFO is smaller than packet size.\n");
return 0;
}
wordcount = pktlength >> 2;
extrabytecount = pktlength & 0x3;
for (fifocount = 0; fifocount < wordcount; fifocount++) {
etherrxbuff[fifocount] =
in_be32 (emac.recvfifo.databaseaddress);
}
/*
* if there are extra bytes to handle, read the last word from the FIFO
* and insert the extra bytes into the buffer
*/
if (extrabytecount > 0) {
extrabytesbuffer = (u8 *) (etherrxbuff + wordcount);
lastword = in_be32 (emac.recvfifo.databaseaddress);
/*
* one extra byte in the last word, put the byte into the next
* location of the buffer, bytes in a word of the FIFO are
* ordered from most significant byte to least
*/
if (extrabytecount == 1) {
extrabytesbuffer[0] = (u8) (lastword >> 24);
} else if (extrabytecount == 2) {
extrabytesbuffer[0] = (u8) (lastword >> 24);
extrabytesbuffer[1] = (u8) (lastword >> 16);
} else if (extrabytecount == 3) {
extrabytesbuffer[0] = (u8) (lastword >> 24);
extrabytesbuffer[1] = (u8) (lastword >> 16);
extrabytesbuffer[2] = (u8) (lastword >> 8);
}
}
NetReceive((uchar *)etherrxbuff, pktlength);
return 1;
}
......@@ -58,10 +58,7 @@
/*#define CONFIG_SYS_RESET_ADDRESS TEXT_BASE*/
/* ethernet */
#ifdef XILINX_EMAC_BASEADDR
#define CONFIG_XILINX_EMAC 1
#define CONFIG_SYS_ENET
#elif XILINX_EMACLITE_BASEADDR
#ifdef XILINX_EMACLITE_BASEADDR
#define CONFIG_XILINX_EMACLITE 1
#define CONFIG_SYS_ENET
#elif XILINX_LLTEMAC_BASEADDR
......
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