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Saves about 50KB of data. Old/new size of all objects: text data bss dec hex filename 563015 80096 130684 773795 bcea3 (TOTALS) 610916 32256 130632 773804 bceac (TOTALS) Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Kurt Van Dijck <kurt.van.dijck@eia.be> (for drivers/net/can/softing/softing_cs.c) Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
1525 lines
45 KiB
C
1525 lines
45 KiB
C
/* ----------------------------------------------------------------------------
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Linux PCMCIA ethernet adapter driver for the New Media Ethernet LAN.
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nmclan_cs.c,v 0.16 1995/07/01 06:42:17 rpao Exp rpao
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The Ethernet LAN uses the Advanced Micro Devices (AMD) Am79C940 Media
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Access Controller for Ethernet (MACE). It is essentially the Am2150
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PCMCIA Ethernet card contained in the Am2150 Demo Kit.
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Written by Roger C. Pao <rpao@paonet.org>
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Copyright 1995 Roger C. Pao
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Linux 2.5 cleanups Copyright Red Hat 2003
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This software may be used and distributed according to the terms of
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the GNU General Public License.
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Ported to Linux 1.3.* network driver environment by
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Matti Aarnio <mea@utu.fi>
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References
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Am2150 Technical Reference Manual, Revision 1.0, August 17, 1993
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Am79C940 (MACE) Data Sheet, 1994
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Am79C90 (C-LANCE) Data Sheet, 1994
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Linux PCMCIA Programmer's Guide v1.17
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/usr/src/linux/net/inet/dev.c, Linux kernel 1.2.8
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Eric Mears, New Media Corporation
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Tom Pollard, New Media Corporation
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Dean Siasoyco, New Media Corporation
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Ken Lesniak, Silicon Graphics, Inc. <lesniak@boston.sgi.com>
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Donald Becker <becker@scyld.com>
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David Hinds <dahinds@users.sourceforge.net>
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The Linux client driver is based on the 3c589_cs.c client driver by
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David Hinds.
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The Linux network driver outline is based on the 3c589_cs.c driver,
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the 8390.c driver, and the example skeleton.c kernel code, which are
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by Donald Becker.
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The Am2150 network driver hardware interface code is based on the
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OS/9000 driver for the New Media Ethernet LAN by Eric Mears.
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Special thanks for testing and help in debugging this driver goes
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to Ken Lesniak.
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-------------------------------------------------------------------------------
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Driver Notes and Issues
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-------------------------------------------------------------------------------
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1. Developed on a Dell 320SLi
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PCMCIA Card Services 2.6.2
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Linux dell 1.2.10 #1 Thu Jun 29 20:23:41 PDT 1995 i386
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2. rc.pcmcia may require loading pcmcia_core with io_speed=300:
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'insmod pcmcia_core.o io_speed=300'.
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This will avoid problems with fast systems which causes rx_framecnt
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to return random values.
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3. If hot extraction does not work for you, use 'ifconfig eth0 down'
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before extraction.
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4. There is a bad slow-down problem in this driver.
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5. Future: Multicast processing. In the meantime, do _not_ compile your
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kernel with multicast ip enabled.
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-------------------------------------------------------------------------------
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History
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-------------------------------------------------------------------------------
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Log: nmclan_cs.c,v
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* 2.5.75-ac1 2003/07/11 Alan Cox <alan@lxorguk.ukuu.org.uk>
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* Fixed hang on card eject as we probe it
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* Cleaned up to use new style locking.
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*
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* Revision 0.16 1995/07/01 06:42:17 rpao
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* Bug fix: nmclan_reset() called CardServices incorrectly.
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*
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* Revision 0.15 1995/05/24 08:09:47 rpao
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* Re-implement MULTI_TX dev->tbusy handling.
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*
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* Revision 0.14 1995/05/23 03:19:30 rpao
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* Added, in nmclan_config(), "tuple.Attributes = 0;".
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* Modified MACE ID check to ignore chip revision level.
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* Avoid tx_free_frames race condition between _start_xmit and _interrupt.
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*
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* Revision 0.13 1995/05/18 05:56:34 rpao
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* Statistics changes.
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* Bug fix: nmclan_reset did not enable TX and RX: call restore_multicast_list.
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* Bug fix: mace_interrupt checks ~MACE_IMR_DEFAULT. Fixes driver lockup.
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*
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* Revision 0.12 1995/05/14 00:12:23 rpao
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* Statistics overhaul.
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*
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95/05/13 rpao V0.10a
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Bug fix: MACE statistics counters used wrong I/O ports.
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Bug fix: mace_interrupt() needed to allow statistics to be
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processed without RX or TX interrupts pending.
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95/05/11 rpao V0.10
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Multiple transmit request processing.
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Modified statistics to use MACE counters where possible.
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95/05/10 rpao V0.09 Bug fix: Must use IO_DATA_PATH_WIDTH_AUTO.
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*Released
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95/05/10 rpao V0.08
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Bug fix: Make all non-exported functions private by using
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static keyword.
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Bug fix: Test IntrCnt _before_ reading MACE_IR.
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95/05/10 rpao V0.07 Statistics.
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95/05/09 rpao V0.06 Fix rx_framecnt problem by addition of PCIC wait states.
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---------------------------------------------------------------------------- */
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#define DRV_NAME "nmclan_cs"
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#define DRV_VERSION "0.16"
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/* ----------------------------------------------------------------------------
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Conditional Compilation Options
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---------------------------------------------------------------------------- */
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#define MULTI_TX 0
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#define RESET_ON_TIMEOUT 1
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#define TX_INTERRUPTABLE 1
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#define RESET_XILINX 0
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/* ----------------------------------------------------------------------------
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Include Files
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---------------------------------------------------------------------------- */
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/ptrace.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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#include <linux/timer.h>
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#include <linux/interrupt.h>
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#include <linux/in.h>
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#include <linux/delay.h>
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#include <linux/ethtool.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/skbuff.h>
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#include <linux/if_arp.h>
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#include <linux/ioport.h>
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#include <linux/bitops.h>
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#include <pcmcia/cisreg.h>
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#include <pcmcia/cistpl.h>
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#include <pcmcia/ds.h>
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#include <asm/uaccess.h>
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#include <asm/io.h>
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#include <asm/system.h>
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/* ----------------------------------------------------------------------------
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Defines
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---------------------------------------------------------------------------- */
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#define ETHER_ADDR_LEN ETH_ALEN
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/* 6 bytes in an Ethernet Address */
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#define MACE_LADRF_LEN 8
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/* 8 bytes in Logical Address Filter */
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/* Loop Control Defines */
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#define MACE_MAX_IR_ITERATIONS 10
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#define MACE_MAX_RX_ITERATIONS 12
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/*
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TBD: Dean brought this up, and I assumed the hardware would
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handle it:
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If MACE_MAX_RX_ITERATIONS is > 1, rx_framecnt may still be
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non-zero when the isr exits. We may not get another interrupt
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to process the remaining packets for some time.
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*/
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/*
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The Am2150 has a Xilinx XC3042 field programmable gate array (FPGA)
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which manages the interface between the MACE and the PCMCIA bus. It
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also includes buffer management for the 32K x 8 SRAM to control up to
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four transmit and 12 receive frames at a time.
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*/
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#define AM2150_MAX_TX_FRAMES 4
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#define AM2150_MAX_RX_FRAMES 12
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/* Am2150 Ethernet Card I/O Mapping */
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#define AM2150_RCV 0x00
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#define AM2150_XMT 0x04
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#define AM2150_XMT_SKIP 0x09
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#define AM2150_RCV_NEXT 0x0A
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#define AM2150_RCV_FRAME_COUNT 0x0B
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#define AM2150_MACE_BANK 0x0C
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#define AM2150_MACE_BASE 0x10
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/* MACE Registers */
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#define MACE_RCVFIFO 0
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#define MACE_XMTFIFO 1
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#define MACE_XMTFC 2
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#define MACE_XMTFS 3
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#define MACE_XMTRC 4
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#define MACE_RCVFC 5
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#define MACE_RCVFS 6
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#define MACE_FIFOFC 7
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#define MACE_IR 8
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#define MACE_IMR 9
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#define MACE_PR 10
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#define MACE_BIUCC 11
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#define MACE_FIFOCC 12
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#define MACE_MACCC 13
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#define MACE_PLSCC 14
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#define MACE_PHYCC 15
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#define MACE_CHIPIDL 16
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#define MACE_CHIPIDH 17
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#define MACE_IAC 18
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/* Reserved */
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#define MACE_LADRF 20
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#define MACE_PADR 21
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/* Reserved */
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/* Reserved */
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#define MACE_MPC 24
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/* Reserved */
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#define MACE_RNTPC 26
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#define MACE_RCVCC 27
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/* Reserved */
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#define MACE_UTR 29
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#define MACE_RTR1 30
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#define MACE_RTR2 31
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/* MACE Bit Masks */
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#define MACE_XMTRC_EXDEF 0x80
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#define MACE_XMTRC_XMTRC 0x0F
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#define MACE_XMTFS_XMTSV 0x80
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#define MACE_XMTFS_UFLO 0x40
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#define MACE_XMTFS_LCOL 0x20
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#define MACE_XMTFS_MORE 0x10
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#define MACE_XMTFS_ONE 0x08
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#define MACE_XMTFS_DEFER 0x04
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#define MACE_XMTFS_LCAR 0x02
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#define MACE_XMTFS_RTRY 0x01
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#define MACE_RCVFS_RCVSTS 0xF000
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#define MACE_RCVFS_OFLO 0x8000
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#define MACE_RCVFS_CLSN 0x4000
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#define MACE_RCVFS_FRAM 0x2000
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#define MACE_RCVFS_FCS 0x1000
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#define MACE_FIFOFC_RCVFC 0xF0
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#define MACE_FIFOFC_XMTFC 0x0F
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#define MACE_IR_JAB 0x80
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#define MACE_IR_BABL 0x40
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#define MACE_IR_CERR 0x20
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#define MACE_IR_RCVCCO 0x10
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#define MACE_IR_RNTPCO 0x08
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#define MACE_IR_MPCO 0x04
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#define MACE_IR_RCVINT 0x02
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#define MACE_IR_XMTINT 0x01
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#define MACE_MACCC_PROM 0x80
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#define MACE_MACCC_DXMT2PD 0x40
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#define MACE_MACCC_EMBA 0x20
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#define MACE_MACCC_RESERVED 0x10
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#define MACE_MACCC_DRCVPA 0x08
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#define MACE_MACCC_DRCVBC 0x04
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#define MACE_MACCC_ENXMT 0x02
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#define MACE_MACCC_ENRCV 0x01
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#define MACE_PHYCC_LNKFL 0x80
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#define MACE_PHYCC_DLNKTST 0x40
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#define MACE_PHYCC_REVPOL 0x20
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#define MACE_PHYCC_DAPC 0x10
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#define MACE_PHYCC_LRT 0x08
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#define MACE_PHYCC_ASEL 0x04
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#define MACE_PHYCC_RWAKE 0x02
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#define MACE_PHYCC_AWAKE 0x01
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#define MACE_IAC_ADDRCHG 0x80
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#define MACE_IAC_PHYADDR 0x04
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#define MACE_IAC_LOGADDR 0x02
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#define MACE_UTR_RTRE 0x80
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#define MACE_UTR_RTRD 0x40
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#define MACE_UTR_RPA 0x20
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#define MACE_UTR_FCOLL 0x10
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#define MACE_UTR_RCVFCSE 0x08
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#define MACE_UTR_LOOP_INCL_MENDEC 0x06
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#define MACE_UTR_LOOP_NO_MENDEC 0x04
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#define MACE_UTR_LOOP_EXTERNAL 0x02
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#define MACE_UTR_LOOP_NONE 0x00
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#define MACE_UTR_RESERVED 0x01
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/* Switch MACE register bank (only 0 and 1 are valid) */
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#define MACEBANK(win_num) outb((win_num), ioaddr + AM2150_MACE_BANK)
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#define MACE_IMR_DEFAULT \
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(0xFF - \
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( \
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MACE_IR_CERR | \
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MACE_IR_RCVCCO | \
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MACE_IR_RNTPCO | \
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MACE_IR_MPCO | \
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MACE_IR_RCVINT | \
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MACE_IR_XMTINT \
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) \
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)
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#undef MACE_IMR_DEFAULT
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#define MACE_IMR_DEFAULT 0x00 /* New statistics handling: grab everything */
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#define TX_TIMEOUT ((400*HZ)/1000)
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/* ----------------------------------------------------------------------------
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Type Definitions
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---------------------------------------------------------------------------- */
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typedef struct _mace_statistics {
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/* MACE_XMTFS */
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int xmtsv;
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int uflo;
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int lcol;
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int more;
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int one;
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int defer;
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int lcar;
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int rtry;
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/* MACE_XMTRC */
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int exdef;
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int xmtrc;
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/* RFS1--Receive Status (RCVSTS) */
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int oflo;
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int clsn;
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int fram;
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int fcs;
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/* RFS2--Runt Packet Count (RNTPC) */
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int rfs_rntpc;
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/* RFS3--Receive Collision Count (RCVCC) */
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int rfs_rcvcc;
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/* MACE_IR */
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int jab;
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int babl;
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int cerr;
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int rcvcco;
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int rntpco;
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int mpco;
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/* MACE_MPC */
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int mpc;
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/* MACE_RNTPC */
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int rntpc;
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/* MACE_RCVCC */
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int rcvcc;
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} mace_statistics;
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typedef struct _mace_private {
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struct pcmcia_device *p_dev;
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struct net_device_stats linux_stats; /* Linux statistics counters */
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mace_statistics mace_stats; /* MACE chip statistics counters */
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/* restore_multicast_list() state variables */
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int multicast_ladrf[MACE_LADRF_LEN]; /* Logical address filter */
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int multicast_num_addrs;
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char tx_free_frames; /* Number of free transmit frame buffers */
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char tx_irq_disabled; /* MACE TX interrupt disabled */
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spinlock_t bank_lock; /* Must be held if you step off bank 0 */
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} mace_private;
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/* ----------------------------------------------------------------------------
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Private Global Variables
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---------------------------------------------------------------------------- */
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static const char *if_names[]={
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"Auto", "10baseT", "BNC",
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};
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/* ----------------------------------------------------------------------------
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Parameters
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These are the parameters that can be set during loading with
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'insmod'.
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---------------------------------------------------------------------------- */
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MODULE_DESCRIPTION("New Media PCMCIA ethernet driver");
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MODULE_LICENSE("GPL");
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#define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
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/* 0=auto, 1=10baseT, 2 = 10base2, default=auto */
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INT_MODULE_PARM(if_port, 0);
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/* ----------------------------------------------------------------------------
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Function Prototypes
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---------------------------------------------------------------------------- */
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static int nmclan_config(struct pcmcia_device *link);
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static void nmclan_release(struct pcmcia_device *link);
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static void nmclan_reset(struct net_device *dev);
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static int mace_config(struct net_device *dev, struct ifmap *map);
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static int mace_open(struct net_device *dev);
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static int mace_close(struct net_device *dev);
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static netdev_tx_t mace_start_xmit(struct sk_buff *skb,
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struct net_device *dev);
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static void mace_tx_timeout(struct net_device *dev);
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static irqreturn_t mace_interrupt(int irq, void *dev_id);
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static struct net_device_stats *mace_get_stats(struct net_device *dev);
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static int mace_rx(struct net_device *dev, unsigned char RxCnt);
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static void restore_multicast_list(struct net_device *dev);
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static void set_multicast_list(struct net_device *dev);
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static const struct ethtool_ops netdev_ethtool_ops;
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static void nmclan_detach(struct pcmcia_device *p_dev);
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static const struct net_device_ops mace_netdev_ops = {
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.ndo_open = mace_open,
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.ndo_stop = mace_close,
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.ndo_start_xmit = mace_start_xmit,
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.ndo_tx_timeout = mace_tx_timeout,
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.ndo_set_config = mace_config,
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.ndo_get_stats = mace_get_stats,
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.ndo_set_multicast_list = set_multicast_list,
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.ndo_change_mtu = eth_change_mtu,
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.ndo_set_mac_address = eth_mac_addr,
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.ndo_validate_addr = eth_validate_addr,
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};
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static int nmclan_probe(struct pcmcia_device *link)
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{
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mace_private *lp;
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struct net_device *dev;
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dev_dbg(&link->dev, "nmclan_attach()\n");
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/* Create new ethernet device */
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dev = alloc_etherdev(sizeof(mace_private));
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if (!dev)
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return -ENOMEM;
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lp = netdev_priv(dev);
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lp->p_dev = link;
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link->priv = dev;
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spin_lock_init(&lp->bank_lock);
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link->resource[0]->end = 32;
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link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
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link->config_flags |= CONF_ENABLE_IRQ;
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link->config_index = 1;
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link->config_regs = PRESENT_OPTION;
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lp->tx_free_frames=AM2150_MAX_TX_FRAMES;
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dev->netdev_ops = &mace_netdev_ops;
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SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
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dev->watchdog_timeo = TX_TIMEOUT;
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return nmclan_config(link);
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} /* nmclan_attach */
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static void nmclan_detach(struct pcmcia_device *link)
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{
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struct net_device *dev = link->priv;
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dev_dbg(&link->dev, "nmclan_detach\n");
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unregister_netdev(dev);
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nmclan_release(link);
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free_netdev(dev);
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} /* nmclan_detach */
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/* ----------------------------------------------------------------------------
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mace_read
|
|
Reads a MACE register. This is bank independent; however, the
|
|
caller must ensure that this call is not interruptable. We are
|
|
assuming that during normal operation, the MACE is always in
|
|
bank 0.
|
|
---------------------------------------------------------------------------- */
|
|
static int mace_read(mace_private *lp, unsigned int ioaddr, int reg)
|
|
{
|
|
int data = 0xFF;
|
|
unsigned long flags;
|
|
|
|
switch (reg >> 4) {
|
|
case 0: /* register 0-15 */
|
|
data = inb(ioaddr + AM2150_MACE_BASE + reg);
|
|
break;
|
|
case 1: /* register 16-31 */
|
|
spin_lock_irqsave(&lp->bank_lock, flags);
|
|
MACEBANK(1);
|
|
data = inb(ioaddr + AM2150_MACE_BASE + (reg & 0x0F));
|
|
MACEBANK(0);
|
|
spin_unlock_irqrestore(&lp->bank_lock, flags);
|
|
break;
|
|
}
|
|
return data & 0xFF;
|
|
} /* mace_read */
|
|
|
|
/* ----------------------------------------------------------------------------
|
|
mace_write
|
|
Writes to a MACE register. This is bank independent; however,
|
|
the caller must ensure that this call is not interruptable. We
|
|
are assuming that during normal operation, the MACE is always in
|
|
bank 0.
|
|
---------------------------------------------------------------------------- */
|
|
static void mace_write(mace_private *lp, unsigned int ioaddr, int reg,
|
|
int data)
|
|
{
|
|
unsigned long flags;
|
|
|
|
switch (reg >> 4) {
|
|
case 0: /* register 0-15 */
|
|
outb(data & 0xFF, ioaddr + AM2150_MACE_BASE + reg);
|
|
break;
|
|
case 1: /* register 16-31 */
|
|
spin_lock_irqsave(&lp->bank_lock, flags);
|
|
MACEBANK(1);
|
|
outb(data & 0xFF, ioaddr + AM2150_MACE_BASE + (reg & 0x0F));
|
|
MACEBANK(0);
|
|
spin_unlock_irqrestore(&lp->bank_lock, flags);
|
|
break;
|
|
}
|
|
} /* mace_write */
|
|
|
|
/* ----------------------------------------------------------------------------
|
|
mace_init
|
|
Resets the MACE chip.
|
|
---------------------------------------------------------------------------- */
|
|
static int mace_init(mace_private *lp, unsigned int ioaddr, char *enet_addr)
|
|
{
|
|
int i;
|
|
int ct = 0;
|
|
|
|
/* MACE Software reset */
|
|
mace_write(lp, ioaddr, MACE_BIUCC, 1);
|
|
while (mace_read(lp, ioaddr, MACE_BIUCC) & 0x01) {
|
|
/* Wait for reset bit to be cleared automatically after <= 200ns */;
|
|
if(++ct > 500)
|
|
{
|
|
pr_err("reset failed, card removed?\n");
|
|
return -1;
|
|
}
|
|
udelay(1);
|
|
}
|
|
mace_write(lp, ioaddr, MACE_BIUCC, 0);
|
|
|
|
/* The Am2150 requires that the MACE FIFOs operate in burst mode. */
|
|
mace_write(lp, ioaddr, MACE_FIFOCC, 0x0F);
|
|
|
|
mace_write(lp,ioaddr, MACE_RCVFC, 0); /* Disable Auto Strip Receive */
|
|
mace_write(lp, ioaddr, MACE_IMR, 0xFF); /* Disable all interrupts until _open */
|
|
|
|
/*
|
|
* Bit 2-1 PORTSEL[1-0] Port Select.
|
|
* 00 AUI/10Base-2
|
|
* 01 10Base-T
|
|
* 10 DAI Port (reserved in Am2150)
|
|
* 11 GPSI
|
|
* For this card, only the first two are valid.
|
|
* So, PLSCC should be set to
|
|
* 0x00 for 10Base-2
|
|
* 0x02 for 10Base-T
|
|
* Or just set ASEL in PHYCC below!
|
|
*/
|
|
switch (if_port) {
|
|
case 1:
|
|
mace_write(lp, ioaddr, MACE_PLSCC, 0x02);
|
|
break;
|
|
case 2:
|
|
mace_write(lp, ioaddr, MACE_PLSCC, 0x00);
|
|
break;
|
|
default:
|
|
mace_write(lp, ioaddr, MACE_PHYCC, /* ASEL */ 4);
|
|
/* ASEL Auto Select. When set, the PORTSEL[1-0] bits are overridden,
|
|
and the MACE device will automatically select the operating media
|
|
interface port. */
|
|
break;
|
|
}
|
|
|
|
mace_write(lp, ioaddr, MACE_IAC, MACE_IAC_ADDRCHG | MACE_IAC_PHYADDR);
|
|
/* Poll ADDRCHG bit */
|
|
ct = 0;
|
|
while (mace_read(lp, ioaddr, MACE_IAC) & MACE_IAC_ADDRCHG)
|
|
{
|
|
if(++ ct > 500)
|
|
{
|
|
pr_err("ADDRCHG timeout, card removed?\n");
|
|
return -1;
|
|
}
|
|
}
|
|
/* Set PADR register */
|
|
for (i = 0; i < ETHER_ADDR_LEN; i++)
|
|
mace_write(lp, ioaddr, MACE_PADR, enet_addr[i]);
|
|
|
|
/* MAC Configuration Control Register should be written last */
|
|
/* Let set_multicast_list set this. */
|
|
/* mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV); */
|
|
mace_write(lp, ioaddr, MACE_MACCC, 0x00);
|
|
return 0;
|
|
} /* mace_init */
|
|
|
|
static int nmclan_config(struct pcmcia_device *link)
|
|
{
|
|
struct net_device *dev = link->priv;
|
|
mace_private *lp = netdev_priv(dev);
|
|
u8 *buf;
|
|
size_t len;
|
|
int i, ret;
|
|
unsigned int ioaddr;
|
|
|
|
dev_dbg(&link->dev, "nmclan_config\n");
|
|
|
|
link->io_lines = 5;
|
|
ret = pcmcia_request_io(link);
|
|
if (ret)
|
|
goto failed;
|
|
ret = pcmcia_request_exclusive_irq(link, mace_interrupt);
|
|
if (ret)
|
|
goto failed;
|
|
ret = pcmcia_enable_device(link);
|
|
if (ret)
|
|
goto failed;
|
|
|
|
dev->irq = link->irq;
|
|
dev->base_addr = link->resource[0]->start;
|
|
|
|
ioaddr = dev->base_addr;
|
|
|
|
/* Read the ethernet address from the CIS. */
|
|
len = pcmcia_get_tuple(link, 0x80, &buf);
|
|
if (!buf || len < ETHER_ADDR_LEN) {
|
|
kfree(buf);
|
|
goto failed;
|
|
}
|
|
memcpy(dev->dev_addr, buf, ETHER_ADDR_LEN);
|
|
kfree(buf);
|
|
|
|
/* Verify configuration by reading the MACE ID. */
|
|
{
|
|
char sig[2];
|
|
|
|
sig[0] = mace_read(lp, ioaddr, MACE_CHIPIDL);
|
|
sig[1] = mace_read(lp, ioaddr, MACE_CHIPIDH);
|
|
if ((sig[0] == 0x40) && ((sig[1] & 0x0F) == 0x09)) {
|
|
dev_dbg(&link->dev, "nmclan_cs configured: mace id=%x %x\n",
|
|
sig[0], sig[1]);
|
|
} else {
|
|
pr_notice("mace id not found: %x %x should be 0x40 0x?9\n",
|
|
sig[0], sig[1]);
|
|
return -ENODEV;
|
|
}
|
|
}
|
|
|
|
if(mace_init(lp, ioaddr, dev->dev_addr) == -1)
|
|
goto failed;
|
|
|
|
/* The if_port symbol can be set when the module is loaded */
|
|
if (if_port <= 2)
|
|
dev->if_port = if_port;
|
|
else
|
|
pr_notice("invalid if_port requested\n");
|
|
|
|
SET_NETDEV_DEV(dev, &link->dev);
|
|
|
|
i = register_netdev(dev);
|
|
if (i != 0) {
|
|
pr_notice("register_netdev() failed\n");
|
|
goto failed;
|
|
}
|
|
|
|
netdev_info(dev, "nmclan: port %#3lx, irq %d, %s port, hw_addr %pM\n",
|
|
dev->base_addr, dev->irq, if_names[dev->if_port], dev->dev_addr);
|
|
return 0;
|
|
|
|
failed:
|
|
nmclan_release(link);
|
|
return -ENODEV;
|
|
} /* nmclan_config */
|
|
|
|
static void nmclan_release(struct pcmcia_device *link)
|
|
{
|
|
dev_dbg(&link->dev, "nmclan_release\n");
|
|
pcmcia_disable_device(link);
|
|
}
|
|
|
|
static int nmclan_suspend(struct pcmcia_device *link)
|
|
{
|
|
struct net_device *dev = link->priv;
|
|
|
|
if (link->open)
|
|
netif_device_detach(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int nmclan_resume(struct pcmcia_device *link)
|
|
{
|
|
struct net_device *dev = link->priv;
|
|
|
|
if (link->open) {
|
|
nmclan_reset(dev);
|
|
netif_device_attach(dev);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* ----------------------------------------------------------------------------
|
|
nmclan_reset
|
|
Reset and restore all of the Xilinx and MACE registers.
|
|
---------------------------------------------------------------------------- */
|
|
static void nmclan_reset(struct net_device *dev)
|
|
{
|
|
mace_private *lp = netdev_priv(dev);
|
|
|
|
#if RESET_XILINX
|
|
struct pcmcia_device *link = &lp->link;
|
|
u8 OrigCorValue;
|
|
|
|
/* Save original COR value */
|
|
pcmcia_read_config_byte(link, CISREG_COR, &OrigCorValue);
|
|
|
|
/* Reset Xilinx */
|
|
dev_dbg(&link->dev, "nmclan_reset: OrigCorValue=0x%x, resetting...\n",
|
|
OrigCorValue);
|
|
pcmcia_write_config_byte(link, CISREG_COR, COR_SOFT_RESET);
|
|
/* Need to wait for 20 ms for PCMCIA to finish reset. */
|
|
|
|
/* Restore original COR configuration index */
|
|
pcmcia_write_config_byte(link, CISREG_COR,
|
|
(COR_LEVEL_REQ | (OrigCorValue & COR_CONFIG_MASK)));
|
|
/* Xilinx is now completely reset along with the MACE chip. */
|
|
lp->tx_free_frames=AM2150_MAX_TX_FRAMES;
|
|
|
|
#endif /* #if RESET_XILINX */
|
|
|
|
/* Xilinx is now completely reset along with the MACE chip. */
|
|
lp->tx_free_frames=AM2150_MAX_TX_FRAMES;
|
|
|
|
/* Reinitialize the MACE chip for operation. */
|
|
mace_init(lp, dev->base_addr, dev->dev_addr);
|
|
mace_write(lp, dev->base_addr, MACE_IMR, MACE_IMR_DEFAULT);
|
|
|
|
/* Restore the multicast list and enable TX and RX. */
|
|
restore_multicast_list(dev);
|
|
} /* nmclan_reset */
|
|
|
|
/* ----------------------------------------------------------------------------
|
|
mace_config
|
|
[Someone tell me what this is supposed to do? Is if_port a defined
|
|
standard? If so, there should be defines to indicate 1=10Base-T,
|
|
2=10Base-2, etc. including limited automatic detection.]
|
|
---------------------------------------------------------------------------- */
|
|
static int mace_config(struct net_device *dev, struct ifmap *map)
|
|
{
|
|
if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
|
|
if (map->port <= 2) {
|
|
dev->if_port = map->port;
|
|
netdev_info(dev, "switched to %s port\n", if_names[dev->if_port]);
|
|
} else
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
} /* mace_config */
|
|
|
|
/* ----------------------------------------------------------------------------
|
|
mace_open
|
|
Open device driver.
|
|
---------------------------------------------------------------------------- */
|
|
static int mace_open(struct net_device *dev)
|
|
{
|
|
unsigned int ioaddr = dev->base_addr;
|
|
mace_private *lp = netdev_priv(dev);
|
|
struct pcmcia_device *link = lp->p_dev;
|
|
|
|
if (!pcmcia_dev_present(link))
|
|
return -ENODEV;
|
|
|
|
link->open++;
|
|
|
|
MACEBANK(0);
|
|
|
|
netif_start_queue(dev);
|
|
nmclan_reset(dev);
|
|
|
|
return 0; /* Always succeed */
|
|
} /* mace_open */
|
|
|
|
/* ----------------------------------------------------------------------------
|
|
mace_close
|
|
Closes device driver.
|
|
---------------------------------------------------------------------------- */
|
|
static int mace_close(struct net_device *dev)
|
|
{
|
|
unsigned int ioaddr = dev->base_addr;
|
|
mace_private *lp = netdev_priv(dev);
|
|
struct pcmcia_device *link = lp->p_dev;
|
|
|
|
dev_dbg(&link->dev, "%s: shutting down ethercard.\n", dev->name);
|
|
|
|
/* Mask off all interrupts from the MACE chip. */
|
|
outb(0xFF, ioaddr + AM2150_MACE_BASE + MACE_IMR);
|
|
|
|
link->open--;
|
|
netif_stop_queue(dev);
|
|
|
|
return 0;
|
|
} /* mace_close */
|
|
|
|
static void netdev_get_drvinfo(struct net_device *dev,
|
|
struct ethtool_drvinfo *info)
|
|
{
|
|
strcpy(info->driver, DRV_NAME);
|
|
strcpy(info->version, DRV_VERSION);
|
|
sprintf(info->bus_info, "PCMCIA 0x%lx", dev->base_addr);
|
|
}
|
|
|
|
static const struct ethtool_ops netdev_ethtool_ops = {
|
|
.get_drvinfo = netdev_get_drvinfo,
|
|
};
|
|
|
|
/* ----------------------------------------------------------------------------
|
|
mace_start_xmit
|
|
This routine begins the packet transmit function. When completed,
|
|
it will generate a transmit interrupt.
|
|
|
|
According to /usr/src/linux/net/inet/dev.c, if _start_xmit
|
|
returns 0, the "packet is now solely the responsibility of the
|
|
driver." If _start_xmit returns non-zero, the "transmission
|
|
failed, put skb back into a list."
|
|
---------------------------------------------------------------------------- */
|
|
|
|
static void mace_tx_timeout(struct net_device *dev)
|
|
{
|
|
mace_private *lp = netdev_priv(dev);
|
|
struct pcmcia_device *link = lp->p_dev;
|
|
|
|
netdev_notice(dev, "transmit timed out -- ");
|
|
#if RESET_ON_TIMEOUT
|
|
pr_cont("resetting card\n");
|
|
pcmcia_reset_card(link->socket);
|
|
#else /* #if RESET_ON_TIMEOUT */
|
|
pr_cont("NOT resetting card\n");
|
|
#endif /* #if RESET_ON_TIMEOUT */
|
|
dev->trans_start = jiffies; /* prevent tx timeout */
|
|
netif_wake_queue(dev);
|
|
}
|
|
|
|
static netdev_tx_t mace_start_xmit(struct sk_buff *skb,
|
|
struct net_device *dev)
|
|
{
|
|
mace_private *lp = netdev_priv(dev);
|
|
unsigned int ioaddr = dev->base_addr;
|
|
|
|
netif_stop_queue(dev);
|
|
|
|
pr_debug("%s: mace_start_xmit(length = %ld) called.\n",
|
|
dev->name, (long)skb->len);
|
|
|
|
#if (!TX_INTERRUPTABLE)
|
|
/* Disable MACE TX interrupts. */
|
|
outb(MACE_IMR_DEFAULT | MACE_IR_XMTINT,
|
|
ioaddr + AM2150_MACE_BASE + MACE_IMR);
|
|
lp->tx_irq_disabled=1;
|
|
#endif /* #if (!TX_INTERRUPTABLE) */
|
|
|
|
{
|
|
/* This block must not be interrupted by another transmit request!
|
|
mace_tx_timeout will take care of timer-based retransmissions from
|
|
the upper layers. The interrupt handler is guaranteed never to
|
|
service a transmit interrupt while we are in here.
|
|
*/
|
|
|
|
lp->linux_stats.tx_bytes += skb->len;
|
|
lp->tx_free_frames--;
|
|
|
|
/* WARNING: Write the _exact_ number of bytes written in the header! */
|
|
/* Put out the word header [must be an outw()] . . . */
|
|
outw(skb->len, ioaddr + AM2150_XMT);
|
|
/* . . . and the packet [may be any combination of outw() and outb()] */
|
|
outsw(ioaddr + AM2150_XMT, skb->data, skb->len >> 1);
|
|
if (skb->len & 1) {
|
|
/* Odd byte transfer */
|
|
outb(skb->data[skb->len-1], ioaddr + AM2150_XMT);
|
|
}
|
|
|
|
#if MULTI_TX
|
|
if (lp->tx_free_frames > 0)
|
|
netif_start_queue(dev);
|
|
#endif /* #if MULTI_TX */
|
|
}
|
|
|
|
#if (!TX_INTERRUPTABLE)
|
|
/* Re-enable MACE TX interrupts. */
|
|
lp->tx_irq_disabled=0;
|
|
outb(MACE_IMR_DEFAULT, ioaddr + AM2150_MACE_BASE + MACE_IMR);
|
|
#endif /* #if (!TX_INTERRUPTABLE) */
|
|
|
|
dev_kfree_skb(skb);
|
|
|
|
return NETDEV_TX_OK;
|
|
} /* mace_start_xmit */
|
|
|
|
/* ----------------------------------------------------------------------------
|
|
mace_interrupt
|
|
The interrupt handler.
|
|
---------------------------------------------------------------------------- */
|
|
static irqreturn_t mace_interrupt(int irq, void *dev_id)
|
|
{
|
|
struct net_device *dev = (struct net_device *) dev_id;
|
|
mace_private *lp = netdev_priv(dev);
|
|
unsigned int ioaddr;
|
|
int status;
|
|
int IntrCnt = MACE_MAX_IR_ITERATIONS;
|
|
|
|
if (dev == NULL) {
|
|
pr_debug("mace_interrupt(): irq 0x%X for unknown device.\n",
|
|
irq);
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
ioaddr = dev->base_addr;
|
|
|
|
if (lp->tx_irq_disabled) {
|
|
const char *msg;
|
|
if (lp->tx_irq_disabled)
|
|
msg = "Interrupt with tx_irq_disabled";
|
|
else
|
|
msg = "Re-entering the interrupt handler";
|
|
netdev_notice(dev, "%s [isr=%02X, imr=%02X]\n",
|
|
msg,
|
|
inb(ioaddr + AM2150_MACE_BASE + MACE_IR),
|
|
inb(ioaddr + AM2150_MACE_BASE + MACE_IMR));
|
|
/* WARNING: MACE_IR has been read! */
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
if (!netif_device_present(dev)) {
|
|
netdev_dbg(dev, "interrupt from dead card\n");
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
do {
|
|
/* WARNING: MACE_IR is a READ/CLEAR port! */
|
|
status = inb(ioaddr + AM2150_MACE_BASE + MACE_IR);
|
|
|
|
pr_debug("mace_interrupt: irq 0x%X status 0x%X.\n", irq, status);
|
|
|
|
if (status & MACE_IR_RCVINT) {
|
|
mace_rx(dev, MACE_MAX_RX_ITERATIONS);
|
|
}
|
|
|
|
if (status & MACE_IR_XMTINT) {
|
|
unsigned char fifofc;
|
|
unsigned char xmtrc;
|
|
unsigned char xmtfs;
|
|
|
|
fifofc = inb(ioaddr + AM2150_MACE_BASE + MACE_FIFOFC);
|
|
if ((fifofc & MACE_FIFOFC_XMTFC)==0) {
|
|
lp->linux_stats.tx_errors++;
|
|
outb(0xFF, ioaddr + AM2150_XMT_SKIP);
|
|
}
|
|
|
|
/* Transmit Retry Count (XMTRC, reg 4) */
|
|
xmtrc = inb(ioaddr + AM2150_MACE_BASE + MACE_XMTRC);
|
|
if (xmtrc & MACE_XMTRC_EXDEF) lp->mace_stats.exdef++;
|
|
lp->mace_stats.xmtrc += (xmtrc & MACE_XMTRC_XMTRC);
|
|
|
|
if (
|
|
(xmtfs = inb(ioaddr + AM2150_MACE_BASE + MACE_XMTFS)) &
|
|
MACE_XMTFS_XMTSV /* Transmit Status Valid */
|
|
) {
|
|
lp->mace_stats.xmtsv++;
|
|
|
|
if (xmtfs & ~MACE_XMTFS_XMTSV) {
|
|
if (xmtfs & MACE_XMTFS_UFLO) {
|
|
/* Underflow. Indicates that the Transmit FIFO emptied before
|
|
the end of frame was reached. */
|
|
lp->mace_stats.uflo++;
|
|
}
|
|
if (xmtfs & MACE_XMTFS_LCOL) {
|
|
/* Late Collision */
|
|
lp->mace_stats.lcol++;
|
|
}
|
|
if (xmtfs & MACE_XMTFS_MORE) {
|
|
/* MORE than one retry was needed */
|
|
lp->mace_stats.more++;
|
|
}
|
|
if (xmtfs & MACE_XMTFS_ONE) {
|
|
/* Exactly ONE retry occurred */
|
|
lp->mace_stats.one++;
|
|
}
|
|
if (xmtfs & MACE_XMTFS_DEFER) {
|
|
/* Transmission was defered */
|
|
lp->mace_stats.defer++;
|
|
}
|
|
if (xmtfs & MACE_XMTFS_LCAR) {
|
|
/* Loss of carrier */
|
|
lp->mace_stats.lcar++;
|
|
}
|
|
if (xmtfs & MACE_XMTFS_RTRY) {
|
|
/* Retry error: transmit aborted after 16 attempts */
|
|
lp->mace_stats.rtry++;
|
|
}
|
|
} /* if (xmtfs & ~MACE_XMTFS_XMTSV) */
|
|
|
|
} /* if (xmtfs & MACE_XMTFS_XMTSV) */
|
|
|
|
lp->linux_stats.tx_packets++;
|
|
lp->tx_free_frames++;
|
|
netif_wake_queue(dev);
|
|
} /* if (status & MACE_IR_XMTINT) */
|
|
|
|
if (status & ~MACE_IMR_DEFAULT & ~MACE_IR_RCVINT & ~MACE_IR_XMTINT) {
|
|
if (status & MACE_IR_JAB) {
|
|
/* Jabber Error. Excessive transmit duration (20-150ms). */
|
|
lp->mace_stats.jab++;
|
|
}
|
|
if (status & MACE_IR_BABL) {
|
|
/* Babble Error. >1518 bytes transmitted. */
|
|
lp->mace_stats.babl++;
|
|
}
|
|
if (status & MACE_IR_CERR) {
|
|
/* Collision Error. CERR indicates the absence of the
|
|
Signal Quality Error Test message after a packet
|
|
transmission. */
|
|
lp->mace_stats.cerr++;
|
|
}
|
|
if (status & MACE_IR_RCVCCO) {
|
|
/* Receive Collision Count Overflow; */
|
|
lp->mace_stats.rcvcco++;
|
|
}
|
|
if (status & MACE_IR_RNTPCO) {
|
|
/* Runt Packet Count Overflow */
|
|
lp->mace_stats.rntpco++;
|
|
}
|
|
if (status & MACE_IR_MPCO) {
|
|
/* Missed Packet Count Overflow */
|
|
lp->mace_stats.mpco++;
|
|
}
|
|
} /* if (status & ~MACE_IMR_DEFAULT & ~MACE_IR_RCVINT & ~MACE_IR_XMTINT) */
|
|
|
|
} while ((status & ~MACE_IMR_DEFAULT) && (--IntrCnt));
|
|
|
|
return IRQ_HANDLED;
|
|
} /* mace_interrupt */
|
|
|
|
/* ----------------------------------------------------------------------------
|
|
mace_rx
|
|
Receives packets.
|
|
---------------------------------------------------------------------------- */
|
|
static int mace_rx(struct net_device *dev, unsigned char RxCnt)
|
|
{
|
|
mace_private *lp = netdev_priv(dev);
|
|
unsigned int ioaddr = dev->base_addr;
|
|
unsigned char rx_framecnt;
|
|
unsigned short rx_status;
|
|
|
|
while (
|
|
((rx_framecnt = inb(ioaddr + AM2150_RCV_FRAME_COUNT)) > 0) &&
|
|
(rx_framecnt <= 12) && /* rx_framecnt==0xFF if card is extracted. */
|
|
(RxCnt--)
|
|
) {
|
|
rx_status = inw(ioaddr + AM2150_RCV);
|
|
|
|
pr_debug("%s: in mace_rx(), framecnt 0x%X, rx_status"
|
|
" 0x%X.\n", dev->name, rx_framecnt, rx_status);
|
|
|
|
if (rx_status & MACE_RCVFS_RCVSTS) { /* Error, update stats. */
|
|
lp->linux_stats.rx_errors++;
|
|
if (rx_status & MACE_RCVFS_OFLO) {
|
|
lp->mace_stats.oflo++;
|
|
}
|
|
if (rx_status & MACE_RCVFS_CLSN) {
|
|
lp->mace_stats.clsn++;
|
|
}
|
|
if (rx_status & MACE_RCVFS_FRAM) {
|
|
lp->mace_stats.fram++;
|
|
}
|
|
if (rx_status & MACE_RCVFS_FCS) {
|
|
lp->mace_stats.fcs++;
|
|
}
|
|
} else {
|
|
short pkt_len = (rx_status & ~MACE_RCVFS_RCVSTS) - 4;
|
|
/* Auto Strip is off, always subtract 4 */
|
|
struct sk_buff *skb;
|
|
|
|
lp->mace_stats.rfs_rntpc += inb(ioaddr + AM2150_RCV);
|
|
/* runt packet count */
|
|
lp->mace_stats.rfs_rcvcc += inb(ioaddr + AM2150_RCV);
|
|
/* rcv collision count */
|
|
|
|
pr_debug(" receiving packet size 0x%X rx_status"
|
|
" 0x%X.\n", pkt_len, rx_status);
|
|
|
|
skb = dev_alloc_skb(pkt_len+2);
|
|
|
|
if (skb != NULL) {
|
|
skb_reserve(skb, 2);
|
|
insw(ioaddr + AM2150_RCV, skb_put(skb, pkt_len), pkt_len>>1);
|
|
if (pkt_len & 1)
|
|
*(skb_tail_pointer(skb) - 1) = inb(ioaddr + AM2150_RCV);
|
|
skb->protocol = eth_type_trans(skb, dev);
|
|
|
|
netif_rx(skb); /* Send the packet to the upper (protocol) layers. */
|
|
|
|
lp->linux_stats.rx_packets++;
|
|
lp->linux_stats.rx_bytes += pkt_len;
|
|
outb(0xFF, ioaddr + AM2150_RCV_NEXT); /* skip to next frame */
|
|
continue;
|
|
} else {
|
|
pr_debug("%s: couldn't allocate a sk_buff of size"
|
|
" %d.\n", dev->name, pkt_len);
|
|
lp->linux_stats.rx_dropped++;
|
|
}
|
|
}
|
|
outb(0xFF, ioaddr + AM2150_RCV_NEXT); /* skip to next frame */
|
|
} /* while */
|
|
|
|
return 0;
|
|
} /* mace_rx */
|
|
|
|
/* ----------------------------------------------------------------------------
|
|
pr_linux_stats
|
|
---------------------------------------------------------------------------- */
|
|
static void pr_linux_stats(struct net_device_stats *pstats)
|
|
{
|
|
pr_debug("pr_linux_stats\n");
|
|
pr_debug(" rx_packets=%-7ld tx_packets=%ld\n",
|
|
(long)pstats->rx_packets, (long)pstats->tx_packets);
|
|
pr_debug(" rx_errors=%-7ld tx_errors=%ld\n",
|
|
(long)pstats->rx_errors, (long)pstats->tx_errors);
|
|
pr_debug(" rx_dropped=%-7ld tx_dropped=%ld\n",
|
|
(long)pstats->rx_dropped, (long)pstats->tx_dropped);
|
|
pr_debug(" multicast=%-7ld collisions=%ld\n",
|
|
(long)pstats->multicast, (long)pstats->collisions);
|
|
|
|
pr_debug(" rx_length_errors=%-7ld rx_over_errors=%ld\n",
|
|
(long)pstats->rx_length_errors, (long)pstats->rx_over_errors);
|
|
pr_debug(" rx_crc_errors=%-7ld rx_frame_errors=%ld\n",
|
|
(long)pstats->rx_crc_errors, (long)pstats->rx_frame_errors);
|
|
pr_debug(" rx_fifo_errors=%-7ld rx_missed_errors=%ld\n",
|
|
(long)pstats->rx_fifo_errors, (long)pstats->rx_missed_errors);
|
|
|
|
pr_debug(" tx_aborted_errors=%-7ld tx_carrier_errors=%ld\n",
|
|
(long)pstats->tx_aborted_errors, (long)pstats->tx_carrier_errors);
|
|
pr_debug(" tx_fifo_errors=%-7ld tx_heartbeat_errors=%ld\n",
|
|
(long)pstats->tx_fifo_errors, (long)pstats->tx_heartbeat_errors);
|
|
pr_debug(" tx_window_errors=%ld\n",
|
|
(long)pstats->tx_window_errors);
|
|
} /* pr_linux_stats */
|
|
|
|
/* ----------------------------------------------------------------------------
|
|
pr_mace_stats
|
|
---------------------------------------------------------------------------- */
|
|
static void pr_mace_stats(mace_statistics *pstats)
|
|
{
|
|
pr_debug("pr_mace_stats\n");
|
|
|
|
pr_debug(" xmtsv=%-7d uflo=%d\n",
|
|
pstats->xmtsv, pstats->uflo);
|
|
pr_debug(" lcol=%-7d more=%d\n",
|
|
pstats->lcol, pstats->more);
|
|
pr_debug(" one=%-7d defer=%d\n",
|
|
pstats->one, pstats->defer);
|
|
pr_debug(" lcar=%-7d rtry=%d\n",
|
|
pstats->lcar, pstats->rtry);
|
|
|
|
/* MACE_XMTRC */
|
|
pr_debug(" exdef=%-7d xmtrc=%d\n",
|
|
pstats->exdef, pstats->xmtrc);
|
|
|
|
/* RFS1--Receive Status (RCVSTS) */
|
|
pr_debug(" oflo=%-7d clsn=%d\n",
|
|
pstats->oflo, pstats->clsn);
|
|
pr_debug(" fram=%-7d fcs=%d\n",
|
|
pstats->fram, pstats->fcs);
|
|
|
|
/* RFS2--Runt Packet Count (RNTPC) */
|
|
/* RFS3--Receive Collision Count (RCVCC) */
|
|
pr_debug(" rfs_rntpc=%-7d rfs_rcvcc=%d\n",
|
|
pstats->rfs_rntpc, pstats->rfs_rcvcc);
|
|
|
|
/* MACE_IR */
|
|
pr_debug(" jab=%-7d babl=%d\n",
|
|
pstats->jab, pstats->babl);
|
|
pr_debug(" cerr=%-7d rcvcco=%d\n",
|
|
pstats->cerr, pstats->rcvcco);
|
|
pr_debug(" rntpco=%-7d mpco=%d\n",
|
|
pstats->rntpco, pstats->mpco);
|
|
|
|
/* MACE_MPC */
|
|
pr_debug(" mpc=%d\n", pstats->mpc);
|
|
|
|
/* MACE_RNTPC */
|
|
pr_debug(" rntpc=%d\n", pstats->rntpc);
|
|
|
|
/* MACE_RCVCC */
|
|
pr_debug(" rcvcc=%d\n", pstats->rcvcc);
|
|
|
|
} /* pr_mace_stats */
|
|
|
|
/* ----------------------------------------------------------------------------
|
|
update_stats
|
|
Update statistics. We change to register window 1, so this
|
|
should be run single-threaded if the device is active. This is
|
|
expected to be a rare operation, and it's simpler for the rest
|
|
of the driver to assume that window 0 is always valid rather
|
|
than use a special window-state variable.
|
|
|
|
oflo & uflo should _never_ occur since it would mean the Xilinx
|
|
was not able to transfer data between the MACE FIFO and the
|
|
card's SRAM fast enough. If this happens, something is
|
|
seriously wrong with the hardware.
|
|
---------------------------------------------------------------------------- */
|
|
static void update_stats(unsigned int ioaddr, struct net_device *dev)
|
|
{
|
|
mace_private *lp = netdev_priv(dev);
|
|
|
|
lp->mace_stats.rcvcc += mace_read(lp, ioaddr, MACE_RCVCC);
|
|
lp->mace_stats.rntpc += mace_read(lp, ioaddr, MACE_RNTPC);
|
|
lp->mace_stats.mpc += mace_read(lp, ioaddr, MACE_MPC);
|
|
/* At this point, mace_stats is fully updated for this call.
|
|
We may now update the linux_stats. */
|
|
|
|
/* The MACE has no equivalent for linux_stats field which are commented
|
|
out. */
|
|
|
|
/* lp->linux_stats.multicast; */
|
|
lp->linux_stats.collisions =
|
|
lp->mace_stats.rcvcco * 256 + lp->mace_stats.rcvcc;
|
|
/* Collision: The MACE may retry sending a packet 15 times
|
|
before giving up. The retry count is in XMTRC.
|
|
Does each retry constitute a collision?
|
|
If so, why doesn't the RCVCC record these collisions? */
|
|
|
|
/* detailed rx_errors: */
|
|
lp->linux_stats.rx_length_errors =
|
|
lp->mace_stats.rntpco * 256 + lp->mace_stats.rntpc;
|
|
/* lp->linux_stats.rx_over_errors */
|
|
lp->linux_stats.rx_crc_errors = lp->mace_stats.fcs;
|
|
lp->linux_stats.rx_frame_errors = lp->mace_stats.fram;
|
|
lp->linux_stats.rx_fifo_errors = lp->mace_stats.oflo;
|
|
lp->linux_stats.rx_missed_errors =
|
|
lp->mace_stats.mpco * 256 + lp->mace_stats.mpc;
|
|
|
|
/* detailed tx_errors */
|
|
lp->linux_stats.tx_aborted_errors = lp->mace_stats.rtry;
|
|
lp->linux_stats.tx_carrier_errors = lp->mace_stats.lcar;
|
|
/* LCAR usually results from bad cabling. */
|
|
lp->linux_stats.tx_fifo_errors = lp->mace_stats.uflo;
|
|
lp->linux_stats.tx_heartbeat_errors = lp->mace_stats.cerr;
|
|
/* lp->linux_stats.tx_window_errors; */
|
|
} /* update_stats */
|
|
|
|
/* ----------------------------------------------------------------------------
|
|
mace_get_stats
|
|
Gathers ethernet statistics from the MACE chip.
|
|
---------------------------------------------------------------------------- */
|
|
static struct net_device_stats *mace_get_stats(struct net_device *dev)
|
|
{
|
|
mace_private *lp = netdev_priv(dev);
|
|
|
|
update_stats(dev->base_addr, dev);
|
|
|
|
pr_debug("%s: updating the statistics.\n", dev->name);
|
|
pr_linux_stats(&lp->linux_stats);
|
|
pr_mace_stats(&lp->mace_stats);
|
|
|
|
return &lp->linux_stats;
|
|
} /* net_device_stats */
|
|
|
|
/* ----------------------------------------------------------------------------
|
|
updateCRC
|
|
Modified from Am79C90 data sheet.
|
|
---------------------------------------------------------------------------- */
|
|
|
|
#ifdef BROKEN_MULTICAST
|
|
|
|
static void updateCRC(int *CRC, int bit)
|
|
{
|
|
static const int poly[]={
|
|
1,1,1,0, 1,1,0,1,
|
|
1,0,1,1, 1,0,0,0,
|
|
1,0,0,0, 0,0,1,1,
|
|
0,0,1,0, 0,0,0,0
|
|
}; /* CRC polynomial. poly[n] = coefficient of the x**n term of the
|
|
CRC generator polynomial. */
|
|
|
|
int j;
|
|
|
|
/* shift CRC and control bit (CRC[32]) */
|
|
for (j = 32; j > 0; j--)
|
|
CRC[j] = CRC[j-1];
|
|
CRC[0] = 0;
|
|
|
|
/* If bit XOR(control bit) = 1, set CRC = CRC XOR polynomial. */
|
|
if (bit ^ CRC[32])
|
|
for (j = 0; j < 32; j++)
|
|
CRC[j] ^= poly[j];
|
|
} /* updateCRC */
|
|
|
|
/* ----------------------------------------------------------------------------
|
|
BuildLAF
|
|
Build logical address filter.
|
|
Modified from Am79C90 data sheet.
|
|
|
|
Input
|
|
ladrf: logical address filter (contents initialized to 0)
|
|
adr: ethernet address
|
|
---------------------------------------------------------------------------- */
|
|
static void BuildLAF(int *ladrf, int *adr)
|
|
{
|
|
int CRC[33]={1}; /* CRC register, 1 word/bit + extra control bit */
|
|
|
|
int i, byte; /* temporary array indices */
|
|
int hashcode; /* the output object */
|
|
|
|
CRC[32]=0;
|
|
|
|
for (byte = 0; byte < 6; byte++)
|
|
for (i = 0; i < 8; i++)
|
|
updateCRC(CRC, (adr[byte] >> i) & 1);
|
|
|
|
hashcode = 0;
|
|
for (i = 0; i < 6; i++)
|
|
hashcode = (hashcode << 1) + CRC[i];
|
|
|
|
byte = hashcode >> 3;
|
|
ladrf[byte] |= (1 << (hashcode & 7));
|
|
|
|
#ifdef PCMCIA_DEBUG
|
|
if (0)
|
|
printk(KERN_DEBUG " adr =%pM\n", adr);
|
|
printk(KERN_DEBUG " hashcode = %d(decimal), ladrf[0:63] =", hashcode);
|
|
for (i = 0; i < 8; i++)
|
|
pr_cont(" %02X", ladrf[i]);
|
|
pr_cont("\n");
|
|
#endif
|
|
} /* BuildLAF */
|
|
|
|
/* ----------------------------------------------------------------------------
|
|
restore_multicast_list
|
|
Restores the multicast filter for MACE chip to the last
|
|
set_multicast_list() call.
|
|
|
|
Input
|
|
multicast_num_addrs
|
|
multicast_ladrf[]
|
|
---------------------------------------------------------------------------- */
|
|
static void restore_multicast_list(struct net_device *dev)
|
|
{
|
|
mace_private *lp = netdev_priv(dev);
|
|
int num_addrs = lp->multicast_num_addrs;
|
|
int *ladrf = lp->multicast_ladrf;
|
|
unsigned int ioaddr = dev->base_addr;
|
|
int i;
|
|
|
|
pr_debug("%s: restoring Rx mode to %d addresses.\n",
|
|
dev->name, num_addrs);
|
|
|
|
if (num_addrs > 0) {
|
|
|
|
pr_debug("Attempt to restore multicast list detected.\n");
|
|
|
|
mace_write(lp, ioaddr, MACE_IAC, MACE_IAC_ADDRCHG | MACE_IAC_LOGADDR);
|
|
/* Poll ADDRCHG bit */
|
|
while (mace_read(lp, ioaddr, MACE_IAC) & MACE_IAC_ADDRCHG)
|
|
;
|
|
/* Set LADRF register */
|
|
for (i = 0; i < MACE_LADRF_LEN; i++)
|
|
mace_write(lp, ioaddr, MACE_LADRF, ladrf[i]);
|
|
|
|
mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_RCVFCSE | MACE_UTR_LOOP_EXTERNAL);
|
|
mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV);
|
|
|
|
} else if (num_addrs < 0) {
|
|
|
|
/* Promiscuous mode: receive all packets */
|
|
mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
|
|
mace_write(lp, ioaddr, MACE_MACCC,
|
|
MACE_MACCC_PROM | MACE_MACCC_ENXMT | MACE_MACCC_ENRCV
|
|
);
|
|
|
|
} else {
|
|
|
|
/* Normal mode */
|
|
mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
|
|
mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV);
|
|
|
|
}
|
|
} /* restore_multicast_list */
|
|
|
|
/* ----------------------------------------------------------------------------
|
|
set_multicast_list
|
|
Set or clear the multicast filter for this adaptor.
|
|
|
|
Input
|
|
num_addrs == -1 Promiscuous mode, receive all packets
|
|
num_addrs == 0 Normal mode, clear multicast list
|
|
num_addrs > 0 Multicast mode, receive normal and MC packets, and do
|
|
best-effort filtering.
|
|
Output
|
|
multicast_num_addrs
|
|
multicast_ladrf[]
|
|
---------------------------------------------------------------------------- */
|
|
|
|
static void set_multicast_list(struct net_device *dev)
|
|
{
|
|
mace_private *lp = netdev_priv(dev);
|
|
int adr[ETHER_ADDR_LEN] = {0}; /* Ethernet address */
|
|
struct netdev_hw_addr *ha;
|
|
|
|
#ifdef PCMCIA_DEBUG
|
|
{
|
|
static int old;
|
|
if (netdev_mc_count(dev) != old) {
|
|
old = netdev_mc_count(dev);
|
|
pr_debug("%s: setting Rx mode to %d addresses.\n",
|
|
dev->name, old);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/* Set multicast_num_addrs. */
|
|
lp->multicast_num_addrs = netdev_mc_count(dev);
|
|
|
|
/* Set multicast_ladrf. */
|
|
if (num_addrs > 0) {
|
|
/* Calculate multicast logical address filter */
|
|
memset(lp->multicast_ladrf, 0, MACE_LADRF_LEN);
|
|
netdev_for_each_mc_addr(ha, dev) {
|
|
memcpy(adr, ha->addr, ETHER_ADDR_LEN);
|
|
BuildLAF(lp->multicast_ladrf, adr);
|
|
}
|
|
}
|
|
|
|
restore_multicast_list(dev);
|
|
|
|
} /* set_multicast_list */
|
|
|
|
#endif /* BROKEN_MULTICAST */
|
|
|
|
static void restore_multicast_list(struct net_device *dev)
|
|
{
|
|
unsigned int ioaddr = dev->base_addr;
|
|
mace_private *lp = netdev_priv(dev);
|
|
|
|
pr_debug("%s: restoring Rx mode to %d addresses.\n", dev->name,
|
|
lp->multicast_num_addrs);
|
|
|
|
if (dev->flags & IFF_PROMISC) {
|
|
/* Promiscuous mode: receive all packets */
|
|
mace_write(lp,ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
|
|
mace_write(lp, ioaddr, MACE_MACCC,
|
|
MACE_MACCC_PROM | MACE_MACCC_ENXMT | MACE_MACCC_ENRCV
|
|
);
|
|
} else {
|
|
/* Normal mode */
|
|
mace_write(lp, ioaddr, MACE_UTR, MACE_UTR_LOOP_EXTERNAL);
|
|
mace_write(lp, ioaddr, MACE_MACCC, MACE_MACCC_ENXMT | MACE_MACCC_ENRCV);
|
|
}
|
|
} /* restore_multicast_list */
|
|
|
|
static void set_multicast_list(struct net_device *dev)
|
|
{
|
|
mace_private *lp = netdev_priv(dev);
|
|
|
|
#ifdef PCMCIA_DEBUG
|
|
{
|
|
static int old;
|
|
if (netdev_mc_count(dev) != old) {
|
|
old = netdev_mc_count(dev);
|
|
pr_debug("%s: setting Rx mode to %d addresses.\n",
|
|
dev->name, old);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
lp->multicast_num_addrs = netdev_mc_count(dev);
|
|
restore_multicast_list(dev);
|
|
|
|
} /* set_multicast_list */
|
|
|
|
static const struct pcmcia_device_id nmclan_ids[] = {
|
|
PCMCIA_DEVICE_PROD_ID12("New Media Corporation", "Ethernet", 0x085a850b, 0x00b2e941),
|
|
PCMCIA_DEVICE_PROD_ID12("Portable Add-ons", "Ethernet+", 0xebf1d60, 0xad673aaf),
|
|
PCMCIA_DEVICE_NULL,
|
|
};
|
|
MODULE_DEVICE_TABLE(pcmcia, nmclan_ids);
|
|
|
|
static struct pcmcia_driver nmclan_cs_driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = "nmclan_cs",
|
|
.probe = nmclan_probe,
|
|
.remove = nmclan_detach,
|
|
.id_table = nmclan_ids,
|
|
.suspend = nmclan_suspend,
|
|
.resume = nmclan_resume,
|
|
};
|
|
|
|
static int __init init_nmclan_cs(void)
|
|
{
|
|
return pcmcia_register_driver(&nmclan_cs_driver);
|
|
}
|
|
|
|
static void __exit exit_nmclan_cs(void)
|
|
{
|
|
pcmcia_unregister_driver(&nmclan_cs_driver);
|
|
}
|
|
|
|
module_init(init_nmclan_cs);
|
|
module_exit(exit_nmclan_cs);
|