get_prom function was used __attriute__ , but it is not enable. ax88796.o does not do link besides ne2000.o. When ld is carried out, get_prom function of ax88796.c is ignored. This problem is a thing by specifications of ld. I checked and test this patch on SuperH and MIPS. Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com> Signed-off-by: Ben Warren <biggerbadderben@gmail.com>master
Nobuhiro Iwamatsu
17 years ago
committed by
Ben Warren
parent
b3ed233198
commit
702c85b0e8
@ -0,0 +1,757 @@ |
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/*
|
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Ported to U-Boot by Christian Pellegrin <chri@ascensit.com> |
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|
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Based on sources from the Linux kernel (pcnet_cs.c, 8390.h) and |
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eCOS(if_dp83902a.c, if_dp83902a.h). Both of these 2 wonderful world |
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are GPL, so this is, of course, GPL. |
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|
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========================================================================== |
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|
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dev/if_dp83902a.c |
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|
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Ethernet device driver for NS DP83902a ethernet controller |
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|
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========================================================================== |
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####ECOSGPLCOPYRIGHTBEGIN#### |
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------------------------------------------- |
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This file is part of eCos, the Embedded Configurable Operating System. |
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Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc. |
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|
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eCos is free software; you can redistribute it and/or modify it under |
||||
the terms of the GNU General Public License as published by the Free |
||||
Software Foundation; either version 2 or (at your option) any later version. |
||||
|
||||
eCos is distributed in the hope that it will be useful, but WITHOUT ANY |
||||
WARRANTY; without even the implied warranty of MERCHANTABILITY or |
||||
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
||||
for more details. |
||||
|
||||
You should have received a copy of the GNU General Public License along |
||||
with eCos; if not, write to the Free Software Foundation, Inc., |
||||
59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. |
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|
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As a special exception, if other files instantiate templates or use macros |
||||
or inline functions from this file, or you compile this file and link it |
||||
with other works to produce a work based on this file, this file does not |
||||
by itself cause the resulting work to be covered by the GNU General Public |
||||
License. However the source code for this file must still be made available |
||||
in accordance with section (3) of the GNU General Public License. |
||||
|
||||
This exception does not invalidate any other reasons why a work based on |
||||
this file might be covered by the GNU General Public License. |
||||
|
||||
Alternative licenses for eCos may be arranged by contacting Red Hat, Inc. |
||||
at http://sources.redhat.com/ecos/ecos-license/
|
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------------------------------------------- |
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####ECOSGPLCOPYRIGHTEND#### |
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####BSDCOPYRIGHTBEGIN#### |
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|
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------------------------------------------- |
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|
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Portions of this software may have been derived from OpenBSD or other sources, |
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and are covered by the appropriate copyright disclaimers included herein. |
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|
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------------------------------------------- |
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|
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####BSDCOPYRIGHTEND#### |
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========================================================================== |
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#####DESCRIPTIONBEGIN#### |
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|
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Author(s): gthomas |
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Contributors: gthomas, jskov, rsandifo |
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Date: 2001-06-13 |
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Purpose: |
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Description: |
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|
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FIXME: Will fail if pinged with large packets (1520 bytes) |
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Add promisc config |
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Add SNMP |
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|
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####DESCRIPTIONEND#### |
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|
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========================================================================== |
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*/ |
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|
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#include <common.h> |
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#include <command.h> |
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#include <net.h> |
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#include <malloc.h> |
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|
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#define mdelay(n) udelay((n)*1000) |
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/* forward definition of function used for the uboot interface */ |
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void uboot_push_packet_len(int len); |
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void uboot_push_tx_done(int key, int val); |
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|
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/* NE2000 base header file */ |
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#include "ne2000_base.h" |
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|
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#if defined(CONFIG_DRIVER_AX88796L) |
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/* AX88796L support */ |
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#include "ax88796.h" |
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#else |
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/* Basic NE2000 chip support */ |
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#include "ne2000.h" |
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#endif |
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|
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static dp83902a_priv_data_t nic; /* just one instance of the card supported */ |
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static bool |
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dp83902a_init(void) |
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{ |
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dp83902a_priv_data_t *dp = &nic; |
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u8* base; |
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#if defined(NE2000_BASIC_INIT) |
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int i; |
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#endif |
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|
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DEBUG_FUNCTION(); |
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|
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base = dp->base; |
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if (!base) |
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return false; /* No device found */ |
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|
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DEBUG_LINE(); |
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|
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#if defined(NE2000_BASIC_INIT) |
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/* AX88796L doesn't need */ |
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/* Prepare ESA */ |
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DP_OUT(base, DP_CR, DP_CR_NODMA | DP_CR_PAGE1); /* Select page 1 */ |
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/* Use the address from the serial EEPROM */ |
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for (i = 0; i < 6; i++) |
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DP_IN(base, DP_P1_PAR0+i, dp->esa[i]); |
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DP_OUT(base, DP_CR, DP_CR_NODMA | DP_CR_PAGE0); /* Select page 0 */ |
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|
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printf("NE2000 - %s ESA: %02x:%02x:%02x:%02x:%02x:%02x\n", |
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"eeprom", |
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dp->esa[0], |
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dp->esa[1], |
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dp->esa[2], |
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dp->esa[3], |
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dp->esa[4], |
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dp->esa[5] ); |
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|
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#endif /* NE2000_BASIC_INIT */ |
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return true; |
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} |
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|
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static void |
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dp83902a_stop(void) |
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{ |
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dp83902a_priv_data_t *dp = &nic; |
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u8 *base = dp->base; |
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|
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DEBUG_FUNCTION(); |
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|
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DP_OUT(base, DP_CR, DP_CR_PAGE0 | DP_CR_NODMA | DP_CR_STOP); /* Brutal */ |
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DP_OUT(base, DP_ISR, 0xFF); /* Clear any pending interrupts */ |
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DP_OUT(base, DP_IMR, 0x00); /* Disable all interrupts */ |
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dp->running = false; |
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} |
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|
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/*
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* This function is called to "start up" the interface. It may be called |
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* multiple times, even when the hardware is already running. It will be |
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* called whenever something "hardware oriented" changes and should leave |
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* the hardware ready to send/receive packets. |
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*/ |
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static void |
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dp83902a_start(u8 * enaddr) |
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{ |
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dp83902a_priv_data_t *dp = &nic; |
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u8 *base = dp->base; |
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int i; |
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DEBUG_FUNCTION(); |
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|
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DP_OUT(base, DP_CR, DP_CR_PAGE0 | DP_CR_NODMA | DP_CR_STOP); /* Brutal */ |
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DP_OUT(base, DP_DCR, DP_DCR_INIT); |
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DP_OUT(base, DP_RBCH, 0); /* Remote byte count */ |
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DP_OUT(base, DP_RBCL, 0); |
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DP_OUT(base, DP_RCR, DP_RCR_MON); /* Accept no packets */ |
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DP_OUT(base, DP_TCR, DP_TCR_LOCAL); /* Transmitter [virtually] off */ |
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DP_OUT(base, DP_TPSR, dp->tx_buf1); /* Transmitter start page */ |
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dp->tx1 = dp->tx2 = 0; |
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dp->tx_next = dp->tx_buf1; |
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dp->tx_started = false; |
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dp->running = true; |
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DP_OUT(base, DP_PSTART, dp->rx_buf_start); /* Receive ring start page */ |
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DP_OUT(base, DP_BNDRY, dp->rx_buf_end - 1); /* Receive ring boundary */ |
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DP_OUT(base, DP_PSTOP, dp->rx_buf_end); /* Receive ring end page */ |
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dp->rx_next = dp->rx_buf_start - 1; |
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dp->running = true; |
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DP_OUT(base, DP_ISR, 0xFF); /* Clear any pending interrupts */ |
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DP_OUT(base, DP_IMR, DP_IMR_All); /* Enable all interrupts */ |
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DP_OUT(base, DP_CR, DP_CR_NODMA | DP_CR_PAGE1 | DP_CR_STOP); /* Select page 1 */ |
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DP_OUT(base, DP_P1_CURP, dp->rx_buf_start); /* Current page - next free page for Rx */ |
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dp->running = true; |
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for (i = 0; i < ETHER_ADDR_LEN; i++) { |
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/* FIXME */ |
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/*((vu_short*)( base + ((DP_P1_PAR0 + i) * 2) +
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* 0x1400)) = enaddr[i];*/ |
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DP_OUT(base, DP_P1_PAR0+i, enaddr[i]); |
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} |
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/* Enable and start device */ |
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DP_OUT(base, DP_CR, DP_CR_PAGE0 | DP_CR_NODMA | DP_CR_START); |
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DP_OUT(base, DP_TCR, DP_TCR_NORMAL); /* Normal transmit operations */ |
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DP_OUT(base, DP_RCR, DP_RCR_AB); /* Accept broadcast, no errors, no multicast */ |
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dp->running = true; |
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} |
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|
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/*
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* This routine is called to start the transmitter. It is split out from the |
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* data handling routine so it may be called either when data becomes first |
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* available or when an Tx interrupt occurs |
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*/ |
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static void |
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dp83902a_start_xmit(int start_page, int len) |
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{ |
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dp83902a_priv_data_t *dp = (dp83902a_priv_data_t *) &nic; |
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u8 *base = dp->base; |
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DEBUG_FUNCTION(); |
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#if DEBUG & 1 |
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printf("Tx pkt %d len %d\n", start_page, len); |
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if (dp->tx_started) |
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printf("TX already started?!?\n"); |
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#endif |
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|
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DP_OUT(base, DP_ISR, (DP_ISR_TxP | DP_ISR_TxE)); |
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DP_OUT(base, DP_CR, DP_CR_PAGE0 | DP_CR_NODMA | DP_CR_START); |
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DP_OUT(base, DP_TBCL, len & 0xFF); |
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DP_OUT(base, DP_TBCH, len >> 8); |
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DP_OUT(base, DP_TPSR, start_page); |
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DP_OUT(base, DP_CR, DP_CR_NODMA | DP_CR_TXPKT | DP_CR_START); |
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dp->tx_started = true; |
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} |
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/*
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* This routine is called to send data to the hardware. It is known a-priori |
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* that there is free buffer space (dp->tx_next). |
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*/ |
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static void |
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dp83902a_send(u8 *data, int total_len, u32 key) |
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{ |
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struct dp83902a_priv_data *dp = (struct dp83902a_priv_data *) &nic; |
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u8 *base = dp->base; |
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int len, start_page, pkt_len, i, isr; |
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#if DEBUG & 4 |
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int dx; |
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#endif |
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DEBUG_FUNCTION(); |
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len = pkt_len = total_len; |
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if (pkt_len < IEEE_8023_MIN_FRAME) |
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pkt_len = IEEE_8023_MIN_FRAME; |
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start_page = dp->tx_next; |
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if (dp->tx_next == dp->tx_buf1) { |
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dp->tx1 = start_page; |
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dp->tx1_len = pkt_len; |
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dp->tx1_key = key; |
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dp->tx_next = dp->tx_buf2; |
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} else { |
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dp->tx2 = start_page; |
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dp->tx2_len = pkt_len; |
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dp->tx2_key = key; |
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dp->tx_next = dp->tx_buf1; |
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} |
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|
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#if DEBUG & 5 |
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printf("TX prep page %d len %d\n", start_page, pkt_len); |
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#endif |
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DP_OUT(base, DP_ISR, DP_ISR_RDC); /* Clear end of DMA */ |
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{ |
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/*
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* Dummy read. The manual sez something slightly different, |
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* but the code is extended a bit to do what Hitachi's monitor |
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* does (i.e., also read data). |
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*/ |
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u16 tmp; |
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int len = 1; |
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DP_OUT(base, DP_RSAL, 0x100 - len); |
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DP_OUT(base, DP_RSAH, (start_page - 1) & 0xff); |
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DP_OUT(base, DP_RBCL, len); |
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DP_OUT(base, DP_RBCH, 0); |
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DP_OUT(base, DP_CR, DP_CR_PAGE0 | DP_CR_RDMA | DP_CR_START); |
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DP_IN_DATA(dp->data, tmp); |
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} |
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#ifdef CYGHWR_NS_DP83902A_PLF_BROKEN_TX_DMA |
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/*
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* Stall for a bit before continuing to work around random data |
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* corruption problems on some platforms. |
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*/ |
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CYGACC_CALL_IF_DELAY_US(1); |
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#endif |
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|
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/* Send data to device buffer(s) */ |
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DP_OUT(base, DP_RSAL, 0); |
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DP_OUT(base, DP_RSAH, start_page); |
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DP_OUT(base, DP_RBCL, pkt_len & 0xFF); |
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DP_OUT(base, DP_RBCH, pkt_len >> 8); |
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DP_OUT(base, DP_CR, DP_CR_WDMA | DP_CR_START); |
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|
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/* Put data into buffer */ |
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#if DEBUG & 4 |
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printf(" sg buf %08lx len %08x\n ", (u32)data, len); |
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dx = 0; |
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#endif |
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while (len > 0) { |
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#if DEBUG & 4 |
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printf(" %02x", *data); |
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if (0 == (++dx % 16)) printf("\n "); |
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#endif |
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|
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DP_OUT_DATA(dp->data, *data++); |
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len--; |
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} |
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#if DEBUG & 4 |
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printf("\n"); |
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#endif |
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if (total_len < pkt_len) { |
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#if DEBUG & 4 |
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printf(" + %d bytes of padding\n", pkt_len - total_len); |
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#endif |
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/* Padding to 802.3 length was required */ |
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for (i = total_len; i < pkt_len;) { |
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i++; |
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DP_OUT_DATA(dp->data, 0); |
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} |
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} |
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|
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#ifdef CYGHWR_NS_DP83902A_PLF_BROKEN_TX_DMA |
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/*
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* After last data write, delay for a bit before accessing the |
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* device again, or we may get random data corruption in the last |
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* datum (on some platforms). |
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*/ |
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CYGACC_CALL_IF_DELAY_US(1); |
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#endif |
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|
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/* Wait for DMA to complete */ |
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do { |
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DP_IN(base, DP_ISR, isr); |
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} while ((isr & DP_ISR_RDC) == 0); |
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|
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/* Then disable DMA */ |
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DP_OUT(base, DP_CR, DP_CR_PAGE0 | DP_CR_NODMA | DP_CR_START); |
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|
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/* Start transmit if not already going */ |
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if (!dp->tx_started) { |
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if (start_page == dp->tx1) { |
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dp->tx_int = 1; /* Expecting interrupt from BUF1 */ |
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} else { |
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dp->tx_int = 2; /* Expecting interrupt from BUF2 */ |
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} |
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dp83902a_start_xmit(start_page, pkt_len); |
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} |
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} |
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|
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/*
|
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* This function is called when a packet has been received. It's job is |
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* to prepare to unload the packet from the hardware. Once the length of |
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* the packet is known, the upper layer of the driver can be told. When |
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* the upper layer is ready to unload the packet, the internal function |
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* 'dp83902a_recv' will be called to actually fetch it from the hardware. |
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*/ |
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static void |
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dp83902a_RxEvent(void) |
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{ |
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struct dp83902a_priv_data *dp = (struct dp83902a_priv_data *) &nic; |
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u8 *base = dp->base; |
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u8 rsr; |
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u8 rcv_hdr[4]; |
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int i, len, pkt, cur; |
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|
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DEBUG_FUNCTION(); |
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|
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DP_IN(base, DP_RSR, rsr); |
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while (true) { |
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/* Read incoming packet header */ |
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DP_OUT(base, DP_CR, DP_CR_PAGE1 | DP_CR_NODMA | DP_CR_START); |
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DP_IN(base, DP_P1_CURP, cur); |
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DP_OUT(base, DP_P1_CR, DP_CR_PAGE0 | DP_CR_NODMA | DP_CR_START); |
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DP_IN(base, DP_BNDRY, pkt); |
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|
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pkt += 1; |
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if (pkt == dp->rx_buf_end) |
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pkt = dp->rx_buf_start; |
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|
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if (pkt == cur) { |
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break; |
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} |
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DP_OUT(base, DP_RBCL, sizeof(rcv_hdr)); |
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DP_OUT(base, DP_RBCH, 0); |
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DP_OUT(base, DP_RSAL, 0); |
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DP_OUT(base, DP_RSAH, pkt); |
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if (dp->rx_next == pkt) { |
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if (cur == dp->rx_buf_start) |
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DP_OUT(base, DP_BNDRY, dp->rx_buf_end - 1); |
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else |
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DP_OUT(base, DP_BNDRY, cur - 1); /* Update pointer */ |
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return; |
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} |
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dp->rx_next = pkt; |
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DP_OUT(base, DP_ISR, DP_ISR_RDC); /* Clear end of DMA */ |
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DP_OUT(base, DP_CR, DP_CR_RDMA | DP_CR_START); |
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#ifdef CYGHWR_NS_DP83902A_PLF_BROKEN_RX_DMA |
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CYGACC_CALL_IF_DELAY_US(10); |
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#endif |
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|
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/* read header (get data size)*/ |
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for (i = 0; i < sizeof(rcv_hdr);) { |
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DP_IN_DATA(dp->data, rcv_hdr[i++]); |
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} |
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|
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#if DEBUG & 5 |
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printf("rx hdr %02x %02x %02x %02x\n", |
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rcv_hdr[0], rcv_hdr[1], rcv_hdr[2], rcv_hdr[3]); |
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#endif |
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len = ((rcv_hdr[3] << 8) | rcv_hdr[2]) - sizeof(rcv_hdr); |
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|
||||
/* data read */ |
||||
uboot_push_packet_len(len); |
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|
||||
if (rcv_hdr[1] == dp->rx_buf_start) |
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DP_OUT(base, DP_BNDRY, dp->rx_buf_end - 1); |
||||
else |
||||
DP_OUT(base, DP_BNDRY, rcv_hdr[1] - 1); /* Update pointer */ |
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} |
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} |
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|
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/*
|
||||
* This function is called as a result of the "eth_drv_recv()" call above. |
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* It's job is to actually fetch data for a packet from the hardware once |
||||
* memory buffers have been allocated for the packet. Note that the buffers |
||||
* may come in pieces, using a scatter-gather list. This allows for more |
||||
* efficient processing in the upper layers of the stack. |
||||
*/ |
||||
static void |
||||
dp83902a_recv(u8 *data, int len) |
||||
{ |
||||
struct dp83902a_priv_data *dp = (struct dp83902a_priv_data *) &nic; |
||||
u8 *base = dp->base; |
||||
int i, mlen; |
||||
u8 saved_char = 0; |
||||
bool saved; |
||||
#if DEBUG & 4 |
||||
int dx; |
||||
#endif |
||||
|
||||
DEBUG_FUNCTION(); |
||||
|
||||
#if DEBUG & 5 |
||||
printf("Rx packet %d length %d\n", dp->rx_next, len); |
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#endif |
||||
|
||||
/* Read incoming packet data */ |
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DP_OUT(base, DP_CR, DP_CR_PAGE0 | DP_CR_NODMA | DP_CR_START); |
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DP_OUT(base, DP_RBCL, len & 0xFF); |
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DP_OUT(base, DP_RBCH, len >> 8); |
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DP_OUT(base, DP_RSAL, 4); /* Past header */ |
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DP_OUT(base, DP_RSAH, dp->rx_next); |
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DP_OUT(base, DP_ISR, DP_ISR_RDC); /* Clear end of DMA */ |
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DP_OUT(base, DP_CR, DP_CR_RDMA | DP_CR_START); |
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#ifdef CYGHWR_NS_DP83902A_PLF_BROKEN_RX_DMA |
||||
CYGACC_CALL_IF_DELAY_US(10); |
||||
#endif |
||||
|
||||
saved = false; |
||||
for (i = 0; i < 1; i++) { |
||||
if (data) { |
||||
mlen = len; |
||||
#if DEBUG & 4 |
||||
printf(" sg buf %08lx len %08x \n", (u32) data, mlen); |
||||
dx = 0; |
||||
#endif |
||||
while (0 < mlen) { |
||||
/* Saved byte from previous loop? */ |
||||
if (saved) { |
||||
*data++ = saved_char; |
||||
mlen--; |
||||
saved = false; |
||||
continue; |
||||
} |
||||
|
||||
{ |
||||
u8 tmp; |
||||
DP_IN_DATA(dp->data, tmp); |
||||
#if DEBUG & 4 |
||||
printf(" %02x", tmp); |
||||
if (0 == (++dx % 16)) printf("\n "); |
||||
#endif |
||||
*data++ = tmp;; |
||||
mlen--; |
||||
} |
||||
} |
||||
#if DEBUG & 4 |
||||
printf("\n"); |
||||
#endif |
||||
} |
||||
} |
||||
} |
||||
|
||||
static void |
||||
dp83902a_TxEvent(void) |
||||
{ |
||||
struct dp83902a_priv_data *dp = (struct dp83902a_priv_data *) &nic; |
||||
u8 *base = dp->base; |
||||
u8 tsr; |
||||
u32 key; |
||||
|
||||
DEBUG_FUNCTION(); |
||||
|
||||
DP_IN(base, DP_TSR, tsr); |
||||
if (dp->tx_int == 1) { |
||||
key = dp->tx1_key; |
||||
dp->tx1 = 0; |
||||
} else { |
||||
key = dp->tx2_key; |
||||
dp->tx2 = 0; |
||||
} |
||||
/* Start next packet if one is ready */ |
||||
dp->tx_started = false; |
||||
if (dp->tx1) { |
||||
dp83902a_start_xmit(dp->tx1, dp->tx1_len); |
||||
dp->tx_int = 1; |
||||
} else if (dp->tx2) { |
||||
dp83902a_start_xmit(dp->tx2, dp->tx2_len); |
||||
dp->tx_int = 2; |
||||
} else { |
||||
dp->tx_int = 0; |
||||
} |
||||
/* Tell higher level we sent this packet */ |
||||
uboot_push_tx_done(key, 0); |
||||
} |
||||
|
||||
/*
|
||||
* Read the tally counters to clear them. Called in response to a CNT |
||||
* interrupt. |
||||
*/ |
||||
static void |
||||
dp83902a_ClearCounters(void) |
||||
{ |
||||
struct dp83902a_priv_data *dp = (struct dp83902a_priv_data *) &nic; |
||||
u8 *base = dp->base; |
||||
u8 cnt1, cnt2, cnt3; |
||||
|
||||
DP_IN(base, DP_FER, cnt1); |
||||
DP_IN(base, DP_CER, cnt2); |
||||
DP_IN(base, DP_MISSED, cnt3); |
||||
DP_OUT(base, DP_ISR, DP_ISR_CNT); |
||||
} |
||||
|
||||
/*
|
||||
* Deal with an overflow condition. This code follows the procedure set |
||||
* out in section 7.0 of the datasheet. |
||||
*/ |
||||
static void |
||||
dp83902a_Overflow(void) |
||||
{ |
||||
struct dp83902a_priv_data *dp = (struct dp83902a_priv_data *)&nic; |
||||
u8 *base = dp->base; |
||||
u8 isr; |
||||
|
||||
/* Issue a stop command and wait 1.6ms for it to complete. */ |
||||
DP_OUT(base, DP_CR, DP_CR_STOP | DP_CR_NODMA); |
||||
CYGACC_CALL_IF_DELAY_US(1600); |
||||
|
||||
/* Clear the remote byte counter registers. */ |
||||
DP_OUT(base, DP_RBCL, 0); |
||||
DP_OUT(base, DP_RBCH, 0); |
||||
|
||||
/* Enter loopback mode while we clear the buffer. */ |
||||
DP_OUT(base, DP_TCR, DP_TCR_LOCAL); |
||||
DP_OUT(base, DP_CR, DP_CR_START | DP_CR_NODMA); |
||||
|
||||
/*
|
||||
* Read in as many packets as we can and acknowledge any and receive |
||||
* interrupts. Since the buffer has overflowed, a receive event of |
||||
* some kind will have occured. |
||||
*/ |
||||
dp83902a_RxEvent(); |
||||
DP_OUT(base, DP_ISR, DP_ISR_RxP|DP_ISR_RxE); |
||||
|
||||
/* Clear the overflow condition and leave loopback mode. */ |
||||
DP_OUT(base, DP_ISR, DP_ISR_OFLW); |
||||
DP_OUT(base, DP_TCR, DP_TCR_NORMAL); |
||||
|
||||
/*
|
||||
* If a transmit command was issued, but no transmit event has occured, |
||||
* restart it here. |
||||
*/ |
||||
DP_IN(base, DP_ISR, isr); |
||||
if (dp->tx_started && !(isr & (DP_ISR_TxP|DP_ISR_TxE))) { |
||||
DP_OUT(base, DP_CR, DP_CR_NODMA | DP_CR_TXPKT | DP_CR_START); |
||||
} |
||||
} |
||||
|
||||
static void |
||||
dp83902a_poll(void) |
||||
{ |
||||
struct dp83902a_priv_data *dp = (struct dp83902a_priv_data *) &nic; |
||||
u8 *base = dp->base; |
||||
u8 isr; |
||||
|
||||
DP_OUT(base, DP_CR, DP_CR_NODMA | DP_CR_PAGE0 | DP_CR_START); |
||||
DP_IN(base, DP_ISR, isr); |
||||
while (0 != isr) { |
||||
/*
|
||||
* The CNT interrupt triggers when the MSB of one of the error |
||||
* counters is set. We don't much care about these counters, but |
||||
* we should read their values to reset them. |
||||
*/ |
||||
if (isr & DP_ISR_CNT) { |
||||
dp83902a_ClearCounters(); |
||||
} |
||||
/*
|
||||
* Check for overflow. It's a special case, since there's a |
||||
* particular procedure that must be followed to get back into |
||||
* a running state.a |
||||
*/ |
||||
if (isr & DP_ISR_OFLW) { |
||||
dp83902a_Overflow(); |
||||
} else { |
||||
/*
|
||||
* Other kinds of interrupts can be acknowledged simply by |
||||
* clearing the relevant bits of the ISR. Do that now, then |
||||
* handle the interrupts we care about. |
||||
*/ |
||||
DP_OUT(base, DP_ISR, isr); /* Clear set bits */ |
||||
if (!dp->running) break; /* Is this necessary? */ |
||||
/*
|
||||
* Check for tx_started on TX event since these may happen |
||||
* spuriously it seems. |
||||
*/ |
||||
if (isr & (DP_ISR_TxP|DP_ISR_TxE) && dp->tx_started) { |
||||
dp83902a_TxEvent(); |
||||
} |
||||
if (isr & (DP_ISR_RxP|DP_ISR_RxE)) { |
||||
dp83902a_RxEvent(); |
||||
} |
||||
} |
||||
DP_IN(base, DP_ISR, isr); |
||||
} |
||||
} |
||||
|
||||
|
||||
/* U-boot specific routines */ |
||||
static u8 *pbuf = NULL; |
||||
|
||||
static int pkey = -1; |
||||
static int initialized = 0; |
||||
|
||||
void uboot_push_packet_len(int len) { |
||||
PRINTK("pushed len = %d\n", len); |
||||
if (len >= 2000) { |
||||
printf("NE2000: packet too big\n"); |
||||
return; |
||||
} |
||||
dp83902a_recv(&pbuf[0], len); |
||||
|
||||
/*Just pass it to the upper layer*/ |
||||
NetReceive(&pbuf[0], len); |
||||
} |
||||
|
||||
void uboot_push_tx_done(int key, int val) { |
||||
PRINTK("pushed key = %d\n", key); |
||||
pkey = key; |
||||
} |
||||
|
||||
int eth_init(bd_t *bd) { |
||||
int r; |
||||
u8 dev_addr[6]; |
||||
char ethaddr[20]; |
||||
|
||||
PRINTK("### eth_init\n"); |
||||
|
||||
if (!pbuf) { |
||||
pbuf = malloc(2000); |
||||
if (!pbuf) { |
||||
printf("Cannot allocate rx buffer\n"); |
||||
return -1; |
||||
} |
||||
} |
||||
|
||||
#ifdef CONFIG_DRIVER_NE2000_CCR |
||||
{ |
||||
vu_char *p = (vu_char *) CONFIG_DRIVER_NE2000_CCR; |
||||
|
||||
PRINTK("CCR before is %x\n", *p); |
||||
*p = CONFIG_DRIVER_NE2000_VAL; |
||||
PRINTK("CCR after is %x\n", *p); |
||||
} |
||||
#endif |
||||
|
||||
nic.base = (u8 *) CONFIG_DRIVER_NE2000_BASE; |
||||
|
||||
r = get_prom(dev_addr, nic.base); |
||||
if (!r) |
||||
return -1; |
||||
|
||||
sprintf (ethaddr, "%02X:%02X:%02X:%02X:%02X:%02X", |
||||
dev_addr[0], dev_addr[1], |
||||
dev_addr[2], dev_addr[3], |
||||
dev_addr[4], dev_addr[5]) ; |
||||
PRINTK("Set environment from HW MAC addr = \"%s\"\n", ethaddr); |
||||
setenv ("ethaddr", ethaddr); |
||||
|
||||
nic.data = nic.base + DP_DATA; |
||||
nic.tx_buf1 = START_PG; |
||||
nic.tx_buf2 = START_PG2; |
||||
nic.rx_buf_start = RX_START; |
||||
nic.rx_buf_end = RX_END; |
||||
|
||||
if (dp83902a_init() == false) |
||||
return -1; |
||||
|
||||
dp83902a_start(dev_addr); |
||||
initialized = 1; |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
void eth_halt() { |
||||
|
||||
PRINTK("### eth_halt\n"); |
||||
if(initialized) |
||||
dp83902a_stop(); |
||||
initialized = 0; |
||||
} |
||||
|
||||
int eth_rx() { |
||||
dp83902a_poll(); |
||||
return 1; |
||||
} |
||||
|
||||
int eth_send(volatile void *packet, int length) { |
||||
int tmo; |
||||
|
||||
PRINTK("### eth_send\n"); |
||||
|
||||
pkey = -1; |
||||
|
||||
dp83902a_send((u8 *) packet, length, 666); |
||||
tmo = get_timer (0) + TOUT * CFG_HZ; |
||||
while(1) { |
||||
dp83902a_poll(); |
||||
if (pkey != -1) { |
||||
PRINTK("Packet sucesfully sent\n"); |
||||
return 0; |
||||
} |
||||
if (get_timer (0) >= tmo) { |
||||
printf("transmission error (timoeut)\n"); |
||||
return 0; |
||||
} |
||||
|
||||
} |
||||
return 0; |
||||
} |
||||
Loading…
Reference in new issue