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marcus.erl |
/* depca.c: A DIGITAL DEPCA & EtherWORKS ethernet driver for linux.
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Written 1994, 1995 by David C. Davies.
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Copyright 1994 David C. Davies
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and
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United States Government
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(as represented by the Director, National Security Agency).
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Copyright 1995 Digital Equipment Corporation.
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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, incorporated herein by reference.
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This driver is written for the Digital Equipment Corporation series
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of DEPCA and EtherWORKS ethernet cards:
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DEPCA (the original)
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DE100
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DE101
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DE200 Turbo
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DE201 Turbo
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DE202 Turbo (TP BNC)
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DE210
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DE422 (EISA)
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The driver has been tested on DE100, DE200 and DE202 cards in a
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relatively busy network. The DE422 has been tested a little.
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This driver will NOT work for the DE203, DE204 and DE205 series of
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cards, since they have a new custom ASIC in place of the AMD LANCE
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chip. See the 'ewrk3.c' driver in the Linux source tree for running
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those cards.
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I have benchmarked the driver with a DE100 at 595kB/s to (542kB/s from)
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a DECstation 5000/200.
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The author may be reached at davies@maniac.ultranet.com
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=========================================================================
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The driver was originally based on the 'lance.c' driver from Donald
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Becker which is included with the standard driver distribution for
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linux. V0.4 is a complete re-write with only the kernel interface
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remaining from the original code.
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1) Lance.c code in /linux/drivers/net/
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2) "Ethernet/IEEE 802.3 Family. 1992 World Network Data Book/Handbook",
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AMD, 1992 [(800) 222-9323].
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3) "Am79C90 CMOS Local Area Network Controller for Ethernet (C-LANCE)",
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AMD, Pub. #17881, May 1993.
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4) "Am79C960 PCnet-ISA(tm), Single-Chip Ethernet Controller for ISA",
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AMD, Pub. #16907, May 1992
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5) "DEC EtherWORKS LC Ethernet Controller Owners Manual",
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Digital Equipment corporation, 1990, Pub. #EK-DE100-OM.003
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6) "DEC EtherWORKS Turbo Ethernet Controller Owners Manual",
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Digital Equipment corporation, 1990, Pub. #EK-DE200-OM.003
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7) "DEPCA Hardware Reference Manual", Pub. #EK-DEPCA-PR
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Digital Equipment Corporation, 1989
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8) "DEC EtherWORKS Turbo_(TP BNC) Ethernet Controller Owners Manual",
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Digital Equipment corporation, 1991, Pub. #EK-DE202-OM.001
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Peter Bauer's depca.c (V0.5) was referred to when debugging V0.1 of this
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driver.
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The original DEPCA card requires that the ethernet ROM address counter
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be enabled to count and has an 8 bit NICSR. The ROM counter enabling is
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only done when a 0x08 is read as the first address octet (to minimise
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the chances of writing over some other hardware's I/O register). The
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NICSR accesses have been changed to byte accesses for all the cards
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supported by this driver, since there is only one useful bit in the MSB
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(remote boot timeout) and it is not used. Also, there is a maximum of
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only 48kB network RAM for this card. My thanks to Torbjorn Lindh for
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help debugging all this (and holding my feet to the fire until I got it
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right).
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The DE200 series boards have on-board 64kB RAM for use as a shared
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memory network buffer. Only the DE100 cards make use of a 2kB buffer
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mode which has not been implemented in this driver (only the 32kB and
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64kB modes are supported [16kB/48kB for the original DEPCA]).
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At the most only 2 DEPCA cards can be supported on the ISA bus because
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there is only provision for two I/O base addresses on each card (0x300
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and 0x200). The I/O address is detected by searching for a byte sequence
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in the Ethernet station address PROM at the expected I/O address for the
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Ethernet PROM. The shared memory base address is 'autoprobed' by
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looking for the self test PROM and detecting the card name. When a
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second DEPCA is detected, information is placed in the base_addr
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variable of the next device structure (which is created if necessary),
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thus enabling ethif_probe initialization for the device. More than 2
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EISA cards can be supported, but care will be needed assigning the
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shared memory to ensure that each slot has the correct IRQ, I/O address
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and shared memory address assigned.
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************************************************************************
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NOTE: If you are using two ISA DEPCAs, it is important that you assign
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the base memory addresses correctly. The driver autoprobes I/O 0x300
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then 0x200. The base memory address for the first device must be less
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than that of the second so that the auto probe will correctly assign the
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I/O and memory addresses on the same card. I can't think of a way to do
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this unambiguously at the moment, since there is nothing on the cards to
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tie I/O and memory information together.
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I am unable to test 2 cards together for now, so this code is
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unchecked. All reports, good or bad, are welcome.
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************************************************************************
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The board IRQ setting must be at an unused IRQ which is auto-probed
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using Donald Becker's autoprobe routines. DEPCA and DE100 board IRQs are
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{2,3,4,5,7}, whereas the DE200 is at {5,9,10,11,15}. Note that IRQ2 is
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really IRQ9 in machines with 16 IRQ lines.
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No 16MB memory limitation should exist with this driver as DMA is not
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used and the common memory area is in low memory on the network card (my
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current system has 20MB and I've not had problems yet).
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The ability to load this driver as a loadable module has been added. To
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utilise this ability, you have to do <8 things:
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0) have a copy of the loadable modules code installed on your system.
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1) copy depca.c from the /linux/drivers/net directory to your favourite
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temporary directory.
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2) if you wish, edit the source code near line 1530 to reflect the I/O
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address and IRQ you're using (see also 5).
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3) compile depca.c, but include -DMODULE in the command line to ensure
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that the correct bits are compiled (see end of source code).
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4) if you are wanting to add a new card, goto 5. Otherwise, recompile a
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kernel with the depca configuration turned off and reboot.
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5) insmod depca.o [irq=7] [io=0x200] [mem=0xd0000] [adapter_name=DE100]
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[Alan Cox: Changed the code to allow command line irq/io assignments]
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[Dave Davies: Changed the code to allow command line mem/name
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assignments]
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6) run the net startup bits for your eth?? interface manually
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(usually /etc/rc.inet[12] at boot time).
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7) enjoy!
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Note that autoprobing is not allowed in loadable modules - the system is
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already up and running and you're messing with interrupts.
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To unload a module, turn off the associated interface
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'ifconfig eth?? down' then 'rmmod depca'.
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To assign a base memory address for the shared memory when running as a
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loadable module, see 5 above. To include the adapter name (if you have
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no PROM but know the card name) also see 5 above. Note that this last
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option will not work with kernel built-in depca's.
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The shared memory assignment for a loadable module makes sense to avoid
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the 'memory autoprobe' picking the wrong shared memory (for the case of
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2 depca's in a PC).
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************************************************************************
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Support for MCA EtherWORKS cards added 11-3-98.
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Verified to work with up to 2 DE212 cards in a system (although not
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fully stress-tested).
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Currently known bugs/limitations:
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Note: with the MCA stuff as a module, it trusts the MCA configuration,
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not the command line for IRQ and memory address. You can
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specify them if you want, but it will throw your values out.
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You still have to pass the IO address it was configured as
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though.
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************************************************************************
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TO DO:
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------
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Revision History
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----------------
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Version Date Description
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0.1 25-jan-94 Initial writing.
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0.2 27-jan-94 Added LANCE TX hardware buffer chaining.
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0.3 1-feb-94 Added multiple DEPCA support.
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0.31 4-feb-94 Added DE202 recognition.
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0.32 19-feb-94 Tidy up. Improve multi-DEPCA support.
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0.33 25-feb-94 Fix DEPCA ethernet ROM counter enable.
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Add jabber packet fix from murf@perftech.com
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and becker@super.org
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0.34 7-mar-94 Fix DEPCA max network memory RAM & NICSR access.
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0.35 8-mar-94 Added DE201 recognition. Tidied up.
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0.351 30-apr-94 Added EISA support. Added DE422 recognition.
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0.36 16-may-94 DE422 fix released.
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0.37 22-jul-94 Added MODULE support
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0.38 15-aug-94 Added DBR ROM switch in depca_close().
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Multi DEPCA bug fix.
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0.38axp 15-sep-94 Special version for Alpha AXP Linux V1.0.
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0.381 12-dec-94 Added DE101 recognition, fix multicast bug.
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0.382 9-feb-95 Fix recognition bug reported by <bkm@star.rl.ac.uk>.
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0.383 22-feb-95 Fix for conflict with VESA SCSI reported by
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<stromain@alf.dec.com>
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0.384 17-mar-95 Fix a ring full bug reported by <bkm@star.rl.ac.uk>
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0.385 3-apr-95 Fix a recognition bug reported by
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<ryan.niemi@lastfrontier.com>
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0.386 21-apr-95 Fix the last fix...sorry, must be galloping senility
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0.40 25-May-95 Rewrite for portability & updated.
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ALPHA support from <jestabro@amt.tay1.dec.com>
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0.41 26-Jun-95 Added verify_area() calls in depca_ioctl() from
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suggestion by <heiko@colossus.escape.de>
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0.42 27-Dec-95 Add 'mem' shared memory assignment for loadable
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modules.
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Add 'adapter_name' for loadable modules when no PROM.
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Both above from a suggestion by
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<pchen@woodruffs121.residence.gatech.edu>.
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Add new multicasting code.
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0.421 22-Apr-96 Fix alloc_device() bug <jari@markkus2.fimr.fi>
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0.422 29-Apr-96 Fix depca_hw_init() bug <jari@markkus2.fimr.fi>
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0.423 7-Jun-96 Fix module load bug <kmg@barco.be>
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0.43 16-Aug-96 Update alloc_device() to conform to de4x5.c
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0.44 1-Sep-97 Fix *_probe() to test check_region() first - bug
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reported by <mmogilvi@elbert.uccs.edu>
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0.45 3-Nov-98 Added support for MCA EtherWORKS (DE210/DE212) cards
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by <tymm@computer.org>
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0.451 5-Nov-98 Fixed mca stuff cuz I'm a dummy. <tymm@computer.org>
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0.5 14-Nov-98 Re-spin for 2.1.x kernels.
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0.51 27-Jun-99 Correct received packet length for CRC from
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report by <worm@dkik.dk>
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0.52 16-Oct-00 Fixes for 2.3 io memory accesses
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Fix show-stopper (ints left masked) in depca_interrupt
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by <peterd@pnd-pc.demon.co.uk>
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0.53 12-Jan-01 Release resources on failure, bss tidbits
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by acme@conectiva.com.br
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0.54 08-Nov-01 use library crc32 functions
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by Matt_Domsch@dell.com
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0.55 01-Mar-03 Use EISA/sysfs framework <maz@wild-wind.fr.eu.org>
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=========================================================================
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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/string.h>
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#include <linux/errno.h>
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#include <linux/ioport.h>
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#include <linux/slab.h>
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#include <linux/interrupt.h>
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#include <linux/delay.h>
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#include <linux/init.h>
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#include <linux/crc32.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/time.h>
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#include <linux/types.h>
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#include <linux/unistd.h>
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#include <linux/ctype.h>
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#include <linux/moduleparam.h>
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#include <linux/platform_device.h>
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#include <linux/bitops.h>
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#include <asm/uaccess.h>
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#include <asm/io.h>
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#include <asm/dma.h>
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#ifdef CONFIG_MCA
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#include <linux/mca.h>
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#endif
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#ifdef CONFIG_EISA
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#include <linux/eisa.h>
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#endif
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#include "depca.h"
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static char version[] __initdata = "depca.c:v0.53 2001/1/12 davies@maniac.ultranet.com\n";
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#ifdef DEPCA_DEBUG
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static int depca_debug = DEPCA_DEBUG;
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#else
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static int depca_debug = 1;
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#endif
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#define DEPCA_NDA 0xffe0 /* No Device Address */
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#define TX_TIMEOUT (1*HZ)
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/*
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** Ethernet PROM defines
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*/
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#define PROBE_LENGTH 32
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#define ETH_PROM_SIG 0xAA5500FFUL
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/*
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** Set the number of Tx and Rx buffers. Ensure that the memory requested
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** here is <= to the amount of shared memory set up by the board switches.
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** The number of descriptors MUST BE A POWER OF 2.
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**
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** total_memory = NUM_RX_DESC*(8+RX_BUFF_SZ) + NUM_TX_DESC*(8+TX_BUFF_SZ)
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*/
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#define NUM_RX_DESC 8 /* Number of RX descriptors */
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#define NUM_TX_DESC 8 /* Number of TX descriptors */
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#define RX_BUFF_SZ 1536 /* Buffer size for each Rx buffer */
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#define TX_BUFF_SZ 1536 /* Buffer size for each Tx buffer */
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/*
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** EISA bus defines
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*/
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#define DEPCA_EISA_IO_PORTS 0x0c00 /* I/O port base address, slot 0 */
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/*
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** ISA Bus defines
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*/
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|
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#define DEPCA_RAM_BASE_ADDRESSES {0xc0000,0xd0000,0xe0000,0x00000}
|
| 312 |
|
|
#define DEPCA_TOTAL_SIZE 0x10
|
| 313 |
|
|
|
| 314 |
|
|
static struct {
|
| 315 |
|
|
u_long iobase;
|
| 316 |
|
|
struct platform_device *device;
|
| 317 |
|
|
} depca_io_ports[] = {
|
| 318 |
|
|
{ 0x300, NULL },
|
| 319 |
|
|
{ 0x200, NULL },
|
| 320 |
|
|
{ 0 , NULL },
|
| 321 |
|
|
};
|
| 322 |
|
|
|
| 323 |
|
|
/*
|
| 324 |
|
|
** Name <-> Adapter mapping
|
| 325 |
|
|
*/
|
| 326 |
|
|
#define DEPCA_SIGNATURE {"DEPCA",\
|
| 327 |
|
|
"DE100","DE101",\
|
| 328 |
|
|
"DE200","DE201","DE202",\
|
| 329 |
|
|
"DE210","DE212",\
|
| 330 |
|
|
"DE422",\
|
| 331 |
|
|
""}
|
| 332 |
|
|
|
| 333 |
|
|
static char* __initdata depca_signature[] = DEPCA_SIGNATURE;
|
| 334 |
|
|
|
| 335 |
|
|
enum depca_type {
|
| 336 |
|
|
DEPCA, de100, de101, de200, de201, de202, de210, de212, de422, unknown
|
| 337 |
|
|
};
|
| 338 |
|
|
|
| 339 |
|
|
static char depca_string[] = "depca";
|
| 340 |
|
|
|
| 341 |
|
|
static int depca_device_remove (struct device *device);
|
| 342 |
|
|
|
| 343 |
|
|
#ifdef CONFIG_EISA
|
| 344 |
|
|
static struct eisa_device_id depca_eisa_ids[] = {
|
| 345 |
|
|
{ "DEC4220", de422 },
|
| 346 |
|
|
{ "" }
|
| 347 |
|
|
};
|
| 348 |
|
|
MODULE_DEVICE_TABLE(eisa, depca_eisa_ids);
|
| 349 |
|
|
|
| 350 |
|
|
static int depca_eisa_probe (struct device *device);
|
| 351 |
|
|
|
| 352 |
|
|
static struct eisa_driver depca_eisa_driver = {
|
| 353 |
|
|
.id_table = depca_eisa_ids,
|
| 354 |
|
|
.driver = {
|
| 355 |
|
|
.name = depca_string,
|
| 356 |
|
|
.probe = depca_eisa_probe,
|
| 357 |
|
|
.remove = __devexit_p (depca_device_remove)
|
| 358 |
|
|
}
|
| 359 |
|
|
};
|
| 360 |
|
|
#endif
|
| 361 |
|
|
|
| 362 |
|
|
#ifdef CONFIG_MCA
|
| 363 |
|
|
/*
|
| 364 |
|
|
** Adapter ID for the MCA EtherWORKS DE210/212 adapter
|
| 365 |
|
|
*/
|
| 366 |
|
|
#define DE210_ID 0x628d
|
| 367 |
|
|
#define DE212_ID 0x6def
|
| 368 |
|
|
|
| 369 |
|
|
static short depca_mca_adapter_ids[] = {
|
| 370 |
|
|
DE210_ID,
|
| 371 |
|
|
DE212_ID,
|
| 372 |
|
|
0x0000
|
| 373 |
|
|
};
|
| 374 |
|
|
|
| 375 |
|
|
static char *depca_mca_adapter_name[] = {
|
| 376 |
|
|
"DEC EtherWORKS MC Adapter (DE210)",
|
| 377 |
|
|
"DEC EtherWORKS MC Adapter (DE212)",
|
| 378 |
|
|
NULL
|
| 379 |
|
|
};
|
| 380 |
|
|
|
| 381 |
|
|
static enum depca_type depca_mca_adapter_type[] = {
|
| 382 |
|
|
de210,
|
| 383 |
|
|
de212,
|
| 384 |
|
|
|
| 385 |
|
|
};
|
| 386 |
|
|
|
| 387 |
|
|
static int depca_mca_probe (struct device *);
|
| 388 |
|
|
|
| 389 |
|
|
static struct mca_driver depca_mca_driver = {
|
| 390 |
|
|
.id_table = depca_mca_adapter_ids,
|
| 391 |
|
|
.driver = {
|
| 392 |
|
|
.name = depca_string,
|
| 393 |
|
|
.bus = &mca_bus_type,
|
| 394 |
|
|
.probe = depca_mca_probe,
|
| 395 |
|
|
.remove = __devexit_p(depca_device_remove),
|
| 396 |
|
|
},
|
| 397 |
|
|
};
|
| 398 |
|
|
#endif
|
| 399 |
|
|
|
| 400 |
|
|
static int depca_isa_probe (struct platform_device *);
|
| 401 |
|
|
|
| 402 |
|
|
static int __devexit depca_isa_remove(struct platform_device *pdev)
|
| 403 |
|
|
{
|
| 404 |
|
|
return depca_device_remove(&pdev->dev);
|
| 405 |
|
|
}
|
| 406 |
|
|
|
| 407 |
|
|
static struct platform_driver depca_isa_driver = {
|
| 408 |
|
|
.probe = depca_isa_probe,
|
| 409 |
|
|
.remove = __devexit_p(depca_isa_remove),
|
| 410 |
|
|
.driver = {
|
| 411 |
|
|
.name = depca_string,
|
| 412 |
|
|
},
|
| 413 |
|
|
};
|
| 414 |
|
|
|
| 415 |
|
|
/*
|
| 416 |
|
|
** Miscellaneous info...
|
| 417 |
|
|
*/
|
| 418 |
|
|
#define DEPCA_STRLEN 16
|
| 419 |
|
|
|
| 420 |
|
|
/*
|
| 421 |
|
|
** Memory Alignment. Each descriptor is 4 longwords long. To force a
|
| 422 |
|
|
** particular alignment on the TX descriptor, adjust DESC_SKIP_LEN and
|
| 423 |
|
|
** DESC_ALIGN. DEPCA_ALIGN aligns the start address of the private memory area
|
| 424 |
|
|
** and hence the RX descriptor ring's first entry.
|
| 425 |
|
|
*/
|
| 426 |
|
|
#define DEPCA_ALIGN4 ((u_long)4 - 1) /* 1 longword align */
|
| 427 |
|
|
#define DEPCA_ALIGN8 ((u_long)8 - 1) /* 2 longword (quadword) align */
|
| 428 |
|
|
#define DEPCA_ALIGN DEPCA_ALIGN8 /* Keep the LANCE happy... */
|
| 429 |
|
|
|
| 430 |
|
|
/*
|
| 431 |
|
|
** The DEPCA Rx and Tx ring descriptors.
|
| 432 |
|
|
*/
|
| 433 |
|
|
struct depca_rx_desc {
|
| 434 |
|
|
volatile s32 base;
|
| 435 |
|
|
s16 buf_length; /* This length is negative 2's complement! */
|
| 436 |
|
|
s16 msg_length; /* This length is "normal". */
|
| 437 |
|
|
};
|
| 438 |
|
|
|
| 439 |
|
|
struct depca_tx_desc {
|
| 440 |
|
|
volatile s32 base;
|
| 441 |
|
|
s16 length; /* This length is negative 2's complement! */
|
| 442 |
|
|
s16 misc; /* Errors and TDR info */
|
| 443 |
|
|
};
|
| 444 |
|
|
|
| 445 |
|
|
#define LA_MASK 0x0000ffff /* LANCE address mask for mapping network RAM
|
| 446 |
|
|
to LANCE memory address space */
|
| 447 |
|
|
|
| 448 |
|
|
/*
|
| 449 |
|
|
** The Lance initialization block, described in databook, in common memory.
|
| 450 |
|
|
*/
|
| 451 |
|
|
struct depca_init {
|
| 452 |
|
|
u16 mode; /* Mode register */
|
| 453 |
|
|
u8 phys_addr[ETH_ALEN]; /* Physical ethernet address */
|
| 454 |
|
|
u8 mcast_table[8]; /* Multicast Hash Table. */
|
| 455 |
|
|
u32 rx_ring; /* Rx ring base pointer & ring length */
|
| 456 |
|
|
u32 tx_ring; /* Tx ring base pointer & ring length */
|
| 457 |
|
|
};
|
| 458 |
|
|
|
| 459 |
|
|
#define DEPCA_PKT_STAT_SZ 16
|
| 460 |
|
|
#define DEPCA_PKT_BIN_SZ 128 /* Should be >=100 unless you
|
| 461 |
|
|
increase DEPCA_PKT_STAT_SZ */
|
| 462 |
|
|
struct depca_private {
|
| 463 |
|
|
char adapter_name[DEPCA_STRLEN]; /* /proc/ioports string */
|
| 464 |
|
|
enum depca_type adapter; /* Adapter type */
|
| 465 |
|
|
enum {
|
| 466 |
|
|
DEPCA_BUS_MCA = 1,
|
| 467 |
|
|
DEPCA_BUS_ISA,
|
| 468 |
|
|
DEPCA_BUS_EISA,
|
| 469 |
|
|
} depca_bus; /* type of bus */
|
| 470 |
|
|
struct depca_init init_block; /* Shadow Initialization block */
|
| 471 |
|
|
/* CPU address space fields */
|
| 472 |
|
|
struct depca_rx_desc __iomem *rx_ring; /* Pointer to start of RX descriptor ring */
|
| 473 |
|
|
struct depca_tx_desc __iomem *tx_ring; /* Pointer to start of TX descriptor ring */
|
| 474 |
|
|
void __iomem *rx_buff[NUM_RX_DESC]; /* CPU virt address of sh'd memory buffs */
|
| 475 |
|
|
void __iomem *tx_buff[NUM_TX_DESC]; /* CPU virt address of sh'd memory buffs */
|
| 476 |
|
|
void __iomem *sh_mem; /* CPU mapped virt address of device RAM */
|
| 477 |
|
|
u_long mem_start; /* Bus address of device RAM (before remap) */
|
| 478 |
|
|
u_long mem_len; /* device memory size */
|
| 479 |
|
|
/* Device address space fields */
|
| 480 |
|
|
u_long device_ram_start; /* Start of RAM in device addr space */
|
| 481 |
|
|
/* Offsets used in both address spaces */
|
| 482 |
|
|
u_long rx_ring_offset; /* Offset from start of RAM to rx_ring */
|
| 483 |
|
|
u_long tx_ring_offset; /* Offset from start of RAM to tx_ring */
|
| 484 |
|
|
u_long buffs_offset; /* LANCE Rx and Tx buffers start address. */
|
| 485 |
|
|
/* Kernel-only (not device) fields */
|
| 486 |
|
|
int rx_new, tx_new; /* The next free ring entry */
|
| 487 |
|
|
int rx_old, tx_old; /* The ring entries to be free()ed. */
|
| 488 |
|
|
spinlock_t lock;
|
| 489 |
|
|
struct { /* Private stats counters */
|
| 490 |
|
|
u32 bins[DEPCA_PKT_STAT_SZ];
|
| 491 |
|
|
u32 unicast;
|
| 492 |
|
|
u32 multicast;
|
| 493 |
|
|
u32 broadcast;
|
| 494 |
|
|
u32 excessive_collisions;
|
| 495 |
|
|
u32 tx_underruns;
|
| 496 |
|
|
u32 excessive_underruns;
|
| 497 |
|
|
} pktStats;
|
| 498 |
|
|
int txRingMask; /* TX ring mask */
|
| 499 |
|
|
int rxRingMask; /* RX ring mask */
|
| 500 |
|
|
s32 rx_rlen; /* log2(rxRingMask+1) for the descriptors */
|
| 501 |
|
|
s32 tx_rlen; /* log2(txRingMask+1) for the descriptors */
|
| 502 |
|
|
};
|
| 503 |
|
|
|
| 504 |
|
|
/*
|
| 505 |
|
|
** The transmit ring full condition is described by the tx_old and tx_new
|
| 506 |
|
|
** pointers by:
|
| 507 |
|
|
** tx_old = tx_new Empty ring
|
| 508 |
|
|
** tx_old = tx_new+1 Full ring
|
| 509 |
|
|
** tx_old+txRingMask = tx_new Full ring (wrapped condition)
|
| 510 |
|
|
*/
|
| 511 |
|
|
#define TX_BUFFS_AVAIL ((lp->tx_old<=lp->tx_new)?\
|
| 512 |
|
|
lp->tx_old+lp->txRingMask-lp->tx_new:\
|
| 513 |
|
|
lp->tx_old -lp->tx_new-1)
|
| 514 |
|
|
|
| 515 |
|
|
/*
|
| 516 |
|
|
** Public Functions
|
| 517 |
|
|
*/
|
| 518 |
|
|
static int depca_open(struct net_device *dev);
|
| 519 |
|
|
static int depca_start_xmit(struct sk_buff *skb, struct net_device *dev);
|
| 520 |
|
|
static irqreturn_t depca_interrupt(int irq, void *dev_id);
|
| 521 |
|
|
static int depca_close(struct net_device *dev);
|
| 522 |
|
|
static int depca_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
|
| 523 |
|
|
static void depca_tx_timeout(struct net_device *dev);
|
| 524 |
|
|
static void set_multicast_list(struct net_device *dev);
|
| 525 |
|
|
|
| 526 |
|
|
/*
|
| 527 |
|
|
** Private functions
|
| 528 |
|
|
*/
|
| 529 |
|
|
static void depca_init_ring(struct net_device *dev);
|
| 530 |
|
|
static int depca_rx(struct net_device *dev);
|
| 531 |
|
|
static int depca_tx(struct net_device *dev);
|
| 532 |
|
|
|
| 533 |
|
|
static void LoadCSRs(struct net_device *dev);
|
| 534 |
|
|
static int InitRestartDepca(struct net_device *dev);
|
| 535 |
|
|
static int DepcaSignature(char *name, u_long paddr);
|
| 536 |
|
|
static int DevicePresent(u_long ioaddr);
|
| 537 |
|
|
static int get_hw_addr(struct net_device *dev);
|
| 538 |
|
|
static void SetMulticastFilter(struct net_device *dev);
|
| 539 |
|
|
static int load_packet(struct net_device *dev, struct sk_buff *skb);
|
| 540 |
|
|
static void depca_dbg_open(struct net_device *dev);
|
| 541 |
|
|
|
| 542 |
|
|
static u_char de1xx_irq[] __initdata = { 2, 3, 4, 5, 7, 9, 0 };
|
| 543 |
|
|
static u_char de2xx_irq[] __initdata = { 5, 9, 10, 11, 15, 0 };
|
| 544 |
|
|
static u_char de422_irq[] __initdata = { 5, 9, 10, 11, 0 };
|
| 545 |
|
|
static u_char *depca_irq;
|
| 546 |
|
|
|
| 547 |
|
|
static int irq;
|
| 548 |
|
|
static int io;
|
| 549 |
|
|
static char *adapter_name;
|
| 550 |
|
|
static int mem; /* For loadable module assignment
|
| 551 |
|
|
use insmod mem=0x????? .... */
|
| 552 |
|
|
module_param (irq, int, 0);
|
| 553 |
|
|
module_param (io, int, 0);
|
| 554 |
|
|
module_param (adapter_name, charp, 0);
|
| 555 |
|
|
module_param (mem, int, 0);
|
| 556 |
|
|
MODULE_PARM_DESC(irq, "DEPCA IRQ number");
|
| 557 |
|
|
MODULE_PARM_DESC(io, "DEPCA I/O base address");
|
| 558 |
|
|
MODULE_PARM_DESC(adapter_name, "DEPCA adapter name");
|
| 559 |
|
|
MODULE_PARM_DESC(mem, "DEPCA shared memory address");
|
| 560 |
|
|
MODULE_LICENSE("GPL");
|
| 561 |
|
|
|
| 562 |
|
|
/*
|
| 563 |
|
|
** Miscellaneous defines...
|
| 564 |
|
|
*/
|
| 565 |
|
|
#define STOP_DEPCA \
|
| 566 |
|
|
outw(CSR0, DEPCA_ADDR);\
|
| 567 |
|
|
outw(STOP, DEPCA_DATA)
|
| 568 |
|
|
|
| 569 |
|
|
static int __init depca_hw_init (struct net_device *dev, struct device *device)
|
| 570 |
|
|
{
|
| 571 |
|
|
struct depca_private *lp;
|
| 572 |
|
|
int i, j, offset, netRAM, mem_len, status = 0;
|
| 573 |
|
|
s16 nicsr;
|
| 574 |
|
|
u_long ioaddr;
|
| 575 |
|
|
u_long mem_start;
|
| 576 |
|
|
DECLARE_MAC_BUF(mac);
|
| 577 |
|
|
|
| 578 |
|
|
/*
|
| 579 |
|
|
* We are now supposed to enter this function with the
|
| 580 |
|
|
* following fields filled with proper values :
|
| 581 |
|
|
*
|
| 582 |
|
|
* dev->base_addr
|
| 583 |
|
|
* lp->mem_start
|
| 584 |
|
|
* lp->depca_bus
|
| 585 |
|
|
* lp->adapter
|
| 586 |
|
|
*
|
| 587 |
|
|
* dev->irq can be set if known from device configuration (on
|
| 588 |
|
|
* MCA or EISA) or module option. Otherwise, it will be auto
|
| 589 |
|
|
* detected.
|
| 590 |
|
|
*/
|
| 591 |
|
|
|
| 592 |
|
|
ioaddr = dev->base_addr;
|
| 593 |
|
|
|
| 594 |
|
|
STOP_DEPCA;
|
| 595 |
|
|
|
| 596 |
|
|
nicsr = inb(DEPCA_NICSR);
|
| 597 |
|
|
nicsr = ((nicsr & ~SHE & ~RBE & ~IEN) | IM);
|
| 598 |
|
|
outb(nicsr, DEPCA_NICSR);
|
| 599 |
|
|
|
| 600 |
|
|
if (inw(DEPCA_DATA) != STOP) {
|
| 601 |
|
|
return -ENXIO;
|
| 602 |
|
|
}
|
| 603 |
|
|
|
| 604 |
|
|
lp = (struct depca_private *) dev->priv;
|
| 605 |
|
|
mem_start = lp->mem_start;
|
| 606 |
|
|
|
| 607 |
|
|
if (!mem_start || lp->adapter < DEPCA || lp->adapter >=unknown)
|
| 608 |
|
|
return -ENXIO;
|
| 609 |
|
|
|
| 610 |
|
|
printk ("%s: %s at 0x%04lx",
|
| 611 |
|
|
device->bus_id, depca_signature[lp->adapter], ioaddr);
|
| 612 |
|
|
|
| 613 |
|
|
switch (lp->depca_bus) {
|
| 614 |
|
|
#ifdef CONFIG_MCA
|
| 615 |
|
|
case DEPCA_BUS_MCA:
|
| 616 |
|
|
printk(" (MCA slot %d)", to_mca_device(device)->slot + 1);
|
| 617 |
|
|
break;
|
| 618 |
|
|
#endif
|
| 619 |
|
|
|
| 620 |
|
|
#ifdef CONFIG_EISA
|
| 621 |
|
|
case DEPCA_BUS_EISA:
|
| 622 |
|
|
printk(" (EISA slot %d)", to_eisa_device(device)->slot);
|
| 623 |
|
|
break;
|
| 624 |
|
|
#endif
|
| 625 |
|
|
|
| 626 |
|
|
case DEPCA_BUS_ISA:
|
| 627 |
|
|
break;
|
| 628 |
|
|
|
| 629 |
|
|
default:
|
| 630 |
|
|
printk("Unknown DEPCA bus %d\n", lp->depca_bus);
|
| 631 |
|
|
return -ENXIO;
|
| 632 |
|
|
}
|
| 633 |
|
|
|
| 634 |
|
|
printk(", h/w address ");
|
| 635 |
|
|
status = get_hw_addr(dev);
|
| 636 |
|
|
printk("%s", print_mac(mac, dev->dev_addr));
|
| 637 |
|
|
if (status != 0) {
|
| 638 |
|
|
printk(" which has an Ethernet PROM CRC error.\n");
|
| 639 |
|
|
return -ENXIO;
|
| 640 |
|
|
}
|
| 641 |
|
|
|
| 642 |
|
|
/* Set up the maximum amount of network RAM(kB) */
|
| 643 |
|
|
netRAM = ((lp->adapter != DEPCA) ? 64 : 48);
|
| 644 |
|
|
if ((nicsr & _128KB) && (lp->adapter == de422))
|
| 645 |
|
|
netRAM = 128;
|
| 646 |
|
|
|
| 647 |
|
|
/* Shared Memory Base Address */
|
| 648 |
|
|
if (nicsr & BUF) {
|
| 649 |
|
|
nicsr &= ~BS; /* DEPCA RAM in top 32k */
|
| 650 |
|
|
netRAM -= 32;
|
| 651 |
|
|
|
| 652 |
|
|
/* Only EISA/ISA needs start address to be re-computed */
|
| 653 |
|
|
if (lp->depca_bus != DEPCA_BUS_MCA)
|
| 654 |
|
|
mem_start += 0x8000;
|
| 655 |
|
|
}
|
| 656 |
|
|
|
| 657 |
|
|
if ((mem_len = (NUM_RX_DESC * (sizeof(struct depca_rx_desc) + RX_BUFF_SZ) + NUM_TX_DESC * (sizeof(struct depca_tx_desc) + TX_BUFF_SZ) + sizeof(struct depca_init)))
|
| 658 |
|
|
> (netRAM << 10)) {
|
| 659 |
|
|
printk(",\n requests %dkB RAM: only %dkB is available!\n", (mem_len >> 10), netRAM);
|
| 660 |
|
|
return -ENXIO;
|
| 661 |
|
|
}
|
| 662 |
|
|
|
| 663 |
|
|
printk(",\n has %dkB RAM at 0x%.5lx", netRAM, mem_start);
|
| 664 |
|
|
|
| 665 |
|
|
/* Enable the shadow RAM. */
|
| 666 |
|
|
if (lp->adapter != DEPCA) {
|
| 667 |
|
|
nicsr |= SHE;
|
| 668 |
|
|
outb(nicsr, DEPCA_NICSR);
|
| 669 |
|
|
}
|
| 670 |
|
|
|
| 671 |
|
|
spin_lock_init(&lp->lock);
|
| 672 |
|
|
sprintf(lp->adapter_name, "%s (%s)",
|
| 673 |
|
|
depca_signature[lp->adapter], device->bus_id);
|
| 674 |
|
|
status = -EBUSY;
|
| 675 |
|
|
|
| 676 |
|
|
/* Initialisation Block */
|
| 677 |
|
|
if (!request_mem_region (mem_start, mem_len, lp->adapter_name)) {
|
| 678 |
|
|
printk(KERN_ERR "depca: cannot request ISA memory, aborting\n");
|
| 679 |
|
|
goto out_priv;
|
| 680 |
|
|
}
|
| 681 |
|
|
|
| 682 |
|
|
status = -EIO;
|
| 683 |
|
|
lp->sh_mem = ioremap(mem_start, mem_len);
|
| 684 |
|
|
if (lp->sh_mem == NULL) {
|
| 685 |
|
|
printk(KERN_ERR "depca: cannot remap ISA memory, aborting\n");
|
| 686 |
|
|
goto out1;
|
| 687 |
|
|
}
|
| 688 |
|
|
|
| 689 |
|
|
lp->mem_start = mem_start;
|
| 690 |
|
|
lp->mem_len = mem_len;
|
| 691 |
|
|
lp->device_ram_start = mem_start & LA_MASK;
|
| 692 |
|
|
|
| 693 |
|
|
offset = 0;
|
| 694 |
|
|
offset += sizeof(struct depca_init);
|
| 695 |
|
|
|
| 696 |
|
|
/* Tx & Rx descriptors (aligned to a quadword boundary) */
|
| 697 |
|
|
offset = (offset + DEPCA_ALIGN) & ~DEPCA_ALIGN;
|
| 698 |
|
|
lp->rx_ring = (struct depca_rx_desc __iomem *) (lp->sh_mem + offset);
|
| 699 |
|
|
lp->rx_ring_offset = offset;
|
| 700 |
|
|
|
| 701 |
|
|
offset += (sizeof(struct depca_rx_desc) * NUM_RX_DESC);
|
| 702 |
|
|
lp->tx_ring = (struct depca_tx_desc __iomem *) (lp->sh_mem + offset);
|
| 703 |
|
|
lp->tx_ring_offset = offset;
|
| 704 |
|
|
|
| 705 |
|
|
offset += (sizeof(struct depca_tx_desc) * NUM_TX_DESC);
|
| 706 |
|
|
|
| 707 |
|
|
lp->buffs_offset = offset;
|
| 708 |
|
|
|
| 709 |
|
|
/* Finish initialising the ring information. */
|
| 710 |
|
|
lp->rxRingMask = NUM_RX_DESC - 1;
|
| 711 |
|
|
lp->txRingMask = NUM_TX_DESC - 1;
|
| 712 |
|
|
|
| 713 |
|
|
/* Calculate Tx/Rx RLEN size for the descriptors. */
|
| 714 |
|
|
for (i = 0, j = lp->rxRingMask; j > 0; i++) {
|
| 715 |
|
|
j >>= 1;
|
| 716 |
|
|
}
|
| 717 |
|
|
lp->rx_rlen = (s32) (i << 29);
|
| 718 |
|
|
for (i = 0, j = lp->txRingMask; j > 0; i++) {
|
| 719 |
|
|
j >>= 1;
|
| 720 |
|
|
}
|
| 721 |
|
|
lp->tx_rlen = (s32) (i << 29);
|
| 722 |
|
|
|
| 723 |
|
|
/* Load the initialisation block */
|
| 724 |
|
|
depca_init_ring(dev);
|
| 725 |
|
|
|
| 726 |
|
|
/* Initialise the control and status registers */
|
| 727 |
|
|
LoadCSRs(dev);
|
| 728 |
|
|
|
| 729 |
|
|
/* Enable DEPCA board interrupts for autoprobing */
|
| 730 |
|
|
nicsr = ((nicsr & ~IM) | IEN);
|
| 731 |
|
|
outb(nicsr, DEPCA_NICSR);
|
| 732 |
|
|
|
| 733 |
|
|
/* To auto-IRQ we enable the initialization-done and DMA err,
|
| 734 |
|
|
interrupts. For now we will always get a DMA error. */
|
| 735 |
|
|
if (dev->irq < 2) {
|
| 736 |
|
|
unsigned char irqnum;
|
| 737 |
|
|
unsigned long irq_mask, delay;
|
| 738 |
|
|
|
| 739 |
|
|
irq_mask = probe_irq_on();
|
| 740 |
|
|
|
| 741 |
|
|
/* Assign the correct irq list */
|
| 742 |
|
|
switch (lp->adapter) {
|
| 743 |
|
|
case DEPCA:
|
| 744 |
|
|
case de100:
|
| 745 |
|
|
case de101:
|
| 746 |
|
|
depca_irq = de1xx_irq;
|
| 747 |
|
|
break;
|
| 748 |
|
|
case de200:
|
| 749 |
|
|
case de201:
|
| 750 |
|
|
case de202:
|
| 751 |
|
|
case de210:
|
| 752 |
|
|
case de212:
|
| 753 |
|
|
depca_irq = de2xx_irq;
|
| 754 |
|
|
break;
|
| 755 |
|
|
case de422:
|
| 756 |
|
|
depca_irq = de422_irq;
|
| 757 |
|
|
break;
|
| 758 |
|
|
|
| 759 |
|
|
default:
|
| 760 |
|
|
break; /* Not reached */
|
| 761 |
|
|
}
|
| 762 |
|
|
|
| 763 |
|
|
/* Trigger an initialization just for the interrupt. */
|
| 764 |
|
|
outw(INEA | INIT, DEPCA_DATA);
|
| 765 |
|
|
|
| 766 |
|
|
delay = jiffies + HZ/50;
|
| 767 |
|
|
while (time_before(jiffies, delay))
|
| 768 |
|
|
yield();
|
| 769 |
|
|
|
| 770 |
|
|
irqnum = probe_irq_off(irq_mask);
|
| 771 |
|
|
|
| 772 |
|
|
status = -ENXIO;
|
| 773 |
|
|
if (!irqnum) {
|
| 774 |
|
|
printk(" and failed to detect IRQ line.\n");
|
| 775 |
|
|
goto out2;
|
| 776 |
|
|
} else {
|
| 777 |
|
|
for (dev->irq = 0, i = 0; (depca_irq[i]) && (!dev->irq); i++)
|
| 778 |
|
|
if (irqnum == depca_irq[i]) {
|
| 779 |
|
|
dev->irq = irqnum;
|
| 780 |
|
|
printk(" and uses IRQ%d.\n", dev->irq);
|
| 781 |
|
|
}
|
| 782 |
|
|
|
| 783 |
|
|
if (!dev->irq) {
|
| 784 |
|
|
printk(" but incorrect IRQ line detected.\n");
|
| 785 |
|
|
goto out2;
|
| 786 |
|
|
}
|
| 787 |
|
|
}
|
| 788 |
|
|
} else {
|
| 789 |
|
|
printk(" and assigned IRQ%d.\n", dev->irq);
|
| 790 |
|
|
}
|
| 791 |
|
|
|
| 792 |
|
|
if (depca_debug > 1) {
|
| 793 |
|
|
printk(version);
|
| 794 |
|
|
}
|
| 795 |
|
|
|
| 796 |
|
|
/* The DEPCA-specific entries in the device structure. */
|
| 797 |
|
|
dev->open = &depca_open;
|
| 798 |
|
|
dev->hard_start_xmit = &depca_start_xmit;
|
| 799 |
|
|
dev->stop = &depca_close;
|
| 800 |
|
|
dev->set_multicast_list = &set_multicast_list;
|
| 801 |
|
|
dev->do_ioctl = &depca_ioctl;
|
| 802 |
|
|
dev->tx_timeout = depca_tx_timeout;
|
| 803 |
|
|
dev->watchdog_timeo = TX_TIMEOUT;
|
| 804 |
|
|
|
| 805 |
|
|
dev->mem_start = 0;
|
| 806 |
|
|
|
| 807 |
|
|
device->driver_data = dev;
|
| 808 |
|
|
SET_NETDEV_DEV (dev, device);
|
| 809 |
|
|
|
| 810 |
|
|
status = register_netdev(dev);
|
| 811 |
|
|
if (status == 0)
|
| 812 |
|
|
return 0;
|
| 813 |
|
|
out2:
|
| 814 |
|
|
iounmap(lp->sh_mem);
|
| 815 |
|
|
out1:
|
| 816 |
|
|
release_mem_region (mem_start, mem_len);
|
| 817 |
|
|
out_priv:
|
| 818 |
|
|
return status;
|
| 819 |
|
|
}
|
| 820 |
|
|
|
| 821 |
|
|
|
| 822 |
|
|
static int depca_open(struct net_device *dev)
|
| 823 |
|
|
{
|
| 824 |
|
|
struct depca_private *lp = (struct depca_private *) dev->priv;
|
| 825 |
|
|
u_long ioaddr = dev->base_addr;
|
| 826 |
|
|
s16 nicsr;
|
| 827 |
|
|
int status = 0;
|
| 828 |
|
|
|
| 829 |
|
|
STOP_DEPCA;
|
| 830 |
|
|
nicsr = inb(DEPCA_NICSR);
|
| 831 |
|
|
|
| 832 |
|
|
/* Make sure the shadow RAM is enabled */
|
| 833 |
|
|
if (lp->adapter != DEPCA) {
|
| 834 |
|
|
nicsr |= SHE;
|
| 835 |
|
|
outb(nicsr, DEPCA_NICSR);
|
| 836 |
|
|
}
|
| 837 |
|
|
|
| 838 |
|
|
/* Re-initialize the DEPCA... */
|
| 839 |
|
|
depca_init_ring(dev);
|
| 840 |
|
|
LoadCSRs(dev);
|
| 841 |
|
|
|
| 842 |
|
|
depca_dbg_open(dev);
|
| 843 |
|
|
|
| 844 |
|
|
if (request_irq(dev->irq, &depca_interrupt, 0, lp->adapter_name, dev)) {
|
| 845 |
|
|
printk("depca_open(): Requested IRQ%d is busy\n", dev->irq);
|
| 846 |
|
|
status = -EAGAIN;
|
| 847 |
|
|
} else {
|
| 848 |
|
|
|
| 849 |
|
|
/* Enable DEPCA board interrupts and turn off LED */
|
| 850 |
|
|
nicsr = ((nicsr & ~IM & ~LED) | IEN);
|
| 851 |
|
|
outb(nicsr, DEPCA_NICSR);
|
| 852 |
|
|
outw(CSR0, DEPCA_ADDR);
|
| 853 |
|
|
|
| 854 |
|
|
netif_start_queue(dev);
|
| 855 |
|
|
|
| 856 |
|
|
status = InitRestartDepca(dev);
|
| 857 |
|
|
|
| 858 |
|
|
if (depca_debug > 1) {
|
| 859 |
|
|
printk("CSR0: 0x%4.4x\n", inw(DEPCA_DATA));
|
| 860 |
|
|
printk("nicsr: 0x%02x\n", inb(DEPCA_NICSR));
|
| 861 |
|
|
}
|
| 862 |
|
|
}
|
| 863 |
|
|
return status;
|
| 864 |
|
|
}
|
| 865 |
|
|
|
| 866 |
|
|
/* Initialize the lance Rx and Tx descriptor rings. */
|
| 867 |
|
|
static void depca_init_ring(struct net_device *dev)
|
| 868 |
|
|
{
|
| 869 |
|
|
struct depca_private *lp = (struct depca_private *) dev->priv;
|
| 870 |
|
|
u_int i;
|
| 871 |
|
|
u_long offset;
|
| 872 |
|
|
|
| 873 |
|
|
/* Lock out other processes whilst setting up the hardware */
|
| 874 |
|
|
netif_stop_queue(dev);
|
| 875 |
|
|
|
| 876 |
|
|
lp->rx_new = lp->tx_new = 0;
|
| 877 |
|
|
lp->rx_old = lp->tx_old = 0;
|
| 878 |
|
|
|
| 879 |
|
|
/* Initialize the base address and length of each buffer in the ring */
|
| 880 |
|
|
for (i = 0; i <= lp->rxRingMask; i++) {
|
| 881 |
|
|
offset = lp->buffs_offset + i * RX_BUFF_SZ;
|
| 882 |
|
|
writel((lp->device_ram_start + offset) | R_OWN, &lp->rx_ring[i].base);
|
| 883 |
|
|
writew(-RX_BUFF_SZ, &lp->rx_ring[i].buf_length);
|
| 884 |
|
|
lp->rx_buff[i] = lp->sh_mem + offset;
|
| 885 |
|
|
}
|
| 886 |
|
|
|
| 887 |
|
|
for (i = 0; i <= lp->txRingMask; i++) {
|
| 888 |
|
|
offset = lp->buffs_offset + (i + lp->rxRingMask + 1) * TX_BUFF_SZ;
|
| 889 |
|
|
writel((lp->device_ram_start + offset) & 0x00ffffff, &lp->tx_ring[i].base);
|
| 890 |
|
|
lp->tx_buff[i] = lp->sh_mem + offset;
|
| 891 |
|
|
}
|
| 892 |
|
|
|
| 893 |
|
|
/* Set up the initialization block */
|
| 894 |
|
|
lp->init_block.rx_ring = (lp->device_ram_start + lp->rx_ring_offset) | lp->rx_rlen;
|
| 895 |
|
|
lp->init_block.tx_ring = (lp->device_ram_start + lp->tx_ring_offset) | lp->tx_rlen;
|
| 896 |
|
|
|
| 897 |
|
|
SetMulticastFilter(dev);
|
| 898 |
|
|
|
| 899 |
|
|
for (i = 0; i < ETH_ALEN; i++) {
|
| 900 |
|
|
lp->init_block.phys_addr[i] = dev->dev_addr[i];
|
| 901 |
|
|
}
|
| 902 |
|
|
|
| 903 |
|
|
lp->init_block.mode = 0x0000; /* Enable the Tx and Rx */
|
| 904 |
|
|
}
|
| 905 |
|
|
|
| 906 |
|
|
|
| 907 |
|
|
static void depca_tx_timeout(struct net_device *dev)
|
| 908 |
|
|
{
|
| 909 |
|
|
u_long ioaddr = dev->base_addr;
|
| 910 |
|
|
|
| 911 |
|
|
printk("%s: transmit timed out, status %04x, resetting.\n", dev->name, inw(DEPCA_DATA));
|
| 912 |
|
|
|
| 913 |
|
|
STOP_DEPCA;
|
| 914 |
|
|
depca_init_ring(dev);
|
| 915 |
|
|
LoadCSRs(dev);
|
| 916 |
|
|
dev->trans_start = jiffies;
|
| 917 |
|
|
netif_wake_queue(dev);
|
| 918 |
|
|
InitRestartDepca(dev);
|
| 919 |
|
|
}
|
| 920 |
|
|
|
| 921 |
|
|
|
| 922 |
|
|
/*
|
| 923 |
|
|
** Writes a socket buffer to TX descriptor ring and starts transmission
|
| 924 |
|
|
*/
|
| 925 |
|
|
static int depca_start_xmit(struct sk_buff *skb, struct net_device *dev)
|
| 926 |
|
|
{
|
| 927 |
|
|
struct depca_private *lp = (struct depca_private *) dev->priv;
|
| 928 |
|
|
u_long ioaddr = dev->base_addr;
|
| 929 |
|
|
int status = 0;
|
| 930 |
|
|
|
| 931 |
|
|
/* Transmitter timeout, serious problems. */
|
| 932 |
|
|
if (skb->len < 1)
|
| 933 |
|
|
goto out;
|
| 934 |
|
|
|
| 935 |
|
|
if (skb_padto(skb, ETH_ZLEN))
|
| 936 |
|
|
goto out;
|
| 937 |
|
|
|
| 938 |
|
|
netif_stop_queue(dev);
|
| 939 |
|
|
|
| 940 |
|
|
if (TX_BUFFS_AVAIL) { /* Fill in a Tx ring entry */
|
| 941 |
|
|
status = load_packet(dev, skb);
|
| 942 |
|
|
|
| 943 |
|
|
if (!status) {
|
| 944 |
|
|
/* Trigger an immediate send demand. */
|
| 945 |
|
|
outw(CSR0, DEPCA_ADDR);
|
| 946 |
|
|
outw(INEA | TDMD, DEPCA_DATA);
|
| 947 |
|
|
|
| 948 |
|
|
dev->trans_start = jiffies;
|
| 949 |
|
|
dev_kfree_skb(skb);
|
| 950 |
|
|
}
|
| 951 |
|
|
if (TX_BUFFS_AVAIL)
|
| 952 |
|
|
netif_start_queue(dev);
|
| 953 |
|
|
} else
|
| 954 |
|
|
status = -1;
|
| 955 |
|
|
|
| 956 |
|
|
out:
|
| 957 |
|
|
return status;
|
| 958 |
|
|
}
|
| 959 |
|
|
|
| 960 |
|
|
/*
|
| 961 |
|
|
** The DEPCA interrupt handler.
|
| 962 |
|
|
*/
|
| 963 |
|
|
static irqreturn_t depca_interrupt(int irq, void *dev_id)
|
| 964 |
|
|
{
|
| 965 |
|
|
struct net_device *dev = dev_id;
|
| 966 |
|
|
struct depca_private *lp;
|
| 967 |
|
|
s16 csr0, nicsr;
|
| 968 |
|
|
u_long ioaddr;
|
| 969 |
|
|
|
| 970 |
|
|
if (dev == NULL) {
|
| 971 |
|
|
printk("depca_interrupt(): irq %d for unknown device.\n", irq);
|
| 972 |
|
|
return IRQ_NONE;
|
| 973 |
|
|
}
|
| 974 |
|
|
|
| 975 |
|
|
lp = (struct depca_private *) dev->priv;
|
| 976 |
|
|
ioaddr = dev->base_addr;
|
| 977 |
|
|
|
| 978 |
|
|
spin_lock(&lp->lock);
|
| 979 |
|
|
|
| 980 |
|
|
/* mask the DEPCA board interrupts and turn on the LED */
|
| 981 |
|
|
nicsr = inb(DEPCA_NICSR);
|
| 982 |
|
|
nicsr |= (IM | LED);
|
| 983 |
|
|
outb(nicsr, DEPCA_NICSR);
|
| 984 |
|
|
|
| 985 |
|
|
outw(CSR0, DEPCA_ADDR);
|
| 986 |
|
|
csr0 = inw(DEPCA_DATA);
|
| 987 |
|
|
|
| 988 |
|
|
/* Acknowledge all of the current interrupt sources ASAP. */
|
| 989 |
|
|
outw(csr0 & INTE, DEPCA_DATA);
|
| 990 |
|
|
|
| 991 |
|
|
if (csr0 & RINT) /* Rx interrupt (packet arrived) */
|
| 992 |
|
|
depca_rx(dev);
|
| 993 |
|
|
|
| 994 |
|
|
if (csr0 & TINT) /* Tx interrupt (packet sent) */
|
| 995 |
|
|
depca_tx(dev);
|
| 996 |
|
|
|
| 997 |
|
|
/* Any resources available? */
|
| 998 |
|
|
if ((TX_BUFFS_AVAIL >= 0) && netif_queue_stopped(dev)) {
|
| 999 |
|
|
netif_wake_queue(dev);
|
| 1000 |
|
|
}
|
| 1001 |
|
|
|
| 1002 |
|
|
/* Unmask the DEPCA board interrupts and turn off the LED */
|
| 1003 |
|
|
nicsr = (nicsr & ~IM & ~LED);
|
| 1004 |
|
|
outb(nicsr, DEPCA_NICSR);
|
| 1005 |
|
|
|
| 1006 |
|
|
spin_unlock(&lp->lock);
|
| 1007 |
|
|
return IRQ_HANDLED;
|
| 1008 |
|
|
}
|
| 1009 |
|
|
|
| 1010 |
|
|
/* Called with lp->lock held */
|
| 1011 |
|
|
static int depca_rx(struct net_device *dev)
|
| 1012 |
|
|
{
|
| 1013 |
|
|
struct depca_private *lp = (struct depca_private *) dev->priv;
|
| 1014 |
|
|
int i, entry;
|
| 1015 |
|
|
s32 status;
|
| 1016 |
|
|
|
| 1017 |
|
|
for (entry = lp->rx_new; !(readl(&lp->rx_ring[entry].base) & R_OWN); entry = lp->rx_new) {
|
| 1018 |
|
|
status = readl(&lp->rx_ring[entry].base) >> 16;
|
| 1019 |
|
|
if (status & R_STP) { /* Remember start of frame */
|
| 1020 |
|
|
lp->rx_old = entry;
|
| 1021 |
|
|
}
|
| 1022 |
|
|
if (status & R_ENP) { /* Valid frame status */
|
| 1023 |
|
|
if (status & R_ERR) { /* There was an error. */
|
| 1024 |
|
|
dev->stats.rx_errors++; /* Update the error stats. */
|
| 1025 |
|
|
if (status & R_FRAM)
|
| 1026 |
|
|
dev->stats.rx_frame_errors++;
|
| 1027 |
|
|
if (status & R_OFLO)
|
| 1028 |
|
|
dev->stats.rx_over_errors++;
|
| 1029 |
|
|
if (status & R_CRC)
|
| 1030 |
|
|
dev->stats.rx_crc_errors++;
|
| 1031 |
|
|
if (status & R_BUFF)
|
| 1032 |
|
|
dev->stats.rx_fifo_errors++;
|
| 1033 |
|
|
} else {
|
| 1034 |
|
|
short len, pkt_len = readw(&lp->rx_ring[entry].msg_length) - 4;
|
| 1035 |
|
|
struct sk_buff *skb;
|
| 1036 |
|
|
|
| 1037 |
|
|
skb = dev_alloc_skb(pkt_len + 2);
|
| 1038 |
|
|
if (skb != NULL) {
|
| 1039 |
|
|
unsigned char *buf;
|
| 1040 |
|
|
skb_reserve(skb, 2); /* 16 byte align the IP header */
|
| 1041 |
|
|
buf = skb_put(skb, pkt_len);
|
| 1042 |
|
|
if (entry < lp->rx_old) { /* Wrapped buffer */
|
| 1043 |
|
|
len = (lp->rxRingMask - lp->rx_old + 1) * RX_BUFF_SZ;
|
| 1044 |
|
|
memcpy_fromio(buf, lp->rx_buff[lp->rx_old], len);
|
| 1045 |
|
|
memcpy_fromio(buf + len, lp->rx_buff[0], pkt_len - len);
|
| 1046 |
|
|
} else { /* Linear buffer */
|
| 1047 |
|
|
memcpy_fromio(buf, lp->rx_buff[lp->rx_old], pkt_len);
|
| 1048 |
|
|
}
|
| 1049 |
|
|
|
| 1050 |
|
|
/*
|
| 1051 |
|
|
** Notify the upper protocol layers that there is another
|
| 1052 |
|
|
** packet to handle
|
| 1053 |
|
|
*/
|
| 1054 |
|
|
skb->protocol = eth_type_trans(skb, dev);
|
| 1055 |
|
|
netif_rx(skb);
|
| 1056 |
|
|
|
| 1057 |
|
|
/*
|
| 1058 |
|
|
** Update stats
|
| 1059 |
|
|
*/
|
| 1060 |
|
|
dev->last_rx = jiffies;
|
| 1061 |
|
|
dev->stats.rx_packets++;
|
| 1062 |
|
|
dev->stats.rx_bytes += pkt_len;
|
| 1063 |
|
|
for (i = 1; i < DEPCA_PKT_STAT_SZ - 1; i++) {
|
| 1064 |
|
|
if (pkt_len < (i * DEPCA_PKT_BIN_SZ)) {
|
| 1065 |
|
|
lp->pktStats.bins[i]++;
|
| 1066 |
|
|
i = DEPCA_PKT_STAT_SZ;
|
| 1067 |
|
|
}
|
| 1068 |
|
|
}
|
| 1069 |
|
|
if (buf[0] & 0x01) { /* Multicast/Broadcast */
|
| 1070 |
|
|
if ((*(s16 *) & buf[0] == -1) && (*(s16 *) & buf[2] == -1) && (*(s16 *) & buf[4] == -1)) {
|
| 1071 |
|
|
lp->pktStats.broadcast++;
|
| 1072 |
|
|
} else {
|
| 1073 |
|
|
lp->pktStats.multicast++;
|
| 1074 |
|
|
}
|
| 1075 |
|
|
} else if ((*(s16 *) & buf[0] == *(s16 *) & dev->dev_addr[0]) && (*(s16 *) & buf[2] == *(s16 *) & dev->dev_addr[2]) && (*(s16 *) & buf[4] == *(s16 *) & dev->dev_addr[4])) {
|
| 1076 |
|
|
lp->pktStats.unicast++;
|
| 1077 |
|
|
}
|
| 1078 |
|
|
|
| 1079 |
|
|
lp->pktStats.bins[0]++; /* Duplicates stats.rx_packets */
|
| 1080 |
|
|
if (lp->pktStats.bins[0] == 0) { /* Reset counters */
|
| 1081 |
|
|
memset((char *) &lp->pktStats, 0, sizeof(lp->pktStats));
|
| 1082 |
|
|
}
|
| 1083 |
|
|
} else {
|
| 1084 |
|
|
printk("%s: Memory squeeze, deferring packet.\n", dev->name);
|
| 1085 |
|
|
dev->stats.rx_dropped++; /* Really, deferred. */
|
| 1086 |
|
|
break;
|
| 1087 |
|
|
}
|
| 1088 |
|
|
}
|
| 1089 |
|
|
/* Change buffer ownership for this last frame, back to the adapter */
|
| 1090 |
|
|
for (; lp->rx_old != entry; lp->rx_old = (++lp->rx_old) & lp->rxRingMask) {
|
| 1091 |
|
|
writel(readl(&lp->rx_ring[lp->rx_old].base) | R_OWN, &lp->rx_ring[lp->rx_old].base);
|
| 1092 |
|
|
}
|
| 1093 |
|
|
writel(readl(&lp->rx_ring[entry].base) | R_OWN, &lp->rx_ring[entry].base);
|
| 1094 |
|
|
}
|
| 1095 |
|
|
|
| 1096 |
|
|
/*
|
| 1097 |
|
|
** Update entry information
|
| 1098 |
|
|
*/
|
| 1099 |
|
|
lp->rx_new = (++lp->rx_new) & lp->rxRingMask;
|
| 1100 |
|
|
}
|
| 1101 |
|
|
|
| 1102 |
|
|
return 0;
|
| 1103 |
|
|
}
|
| 1104 |
|
|
|
| 1105 |
|
|
/*
|
| 1106 |
|
|
** Buffer sent - check for buffer errors.
|
| 1107 |
|
|
** Called with lp->lock held
|
| 1108 |
|
|
*/
|
| 1109 |
|
|
static int depca_tx(struct net_device *dev)
|
| 1110 |
|
|
{
|
| 1111 |
|
|
struct depca_private *lp = (struct depca_private *) dev->priv;
|
| 1112 |
|
|
int entry;
|
| 1113 |
|
|
s32 status;
|
| 1114 |
|
|
u_long ioaddr = dev->base_addr;
|
| 1115 |
|
|
|
| 1116 |
|
|
for (entry = lp->tx_old; entry != lp->tx_new; entry = lp->tx_old) {
|
| 1117 |
|
|
status = readl(&lp->tx_ring[entry].base) >> 16;
|
| 1118 |
|
|
|
| 1119 |
|
|
if (status < 0) { /* Packet not yet sent! */
|
| 1120 |
|
|
break;
|
| 1121 |
|
|
} else if (status & T_ERR) { /* An error occurred. */
|
| 1122 |
|
|
status = readl(&lp->tx_ring[entry].misc);
|
| 1123 |
|
|
dev->stats.tx_errors++;
|
| 1124 |
|
|
if (status & TMD3_RTRY)
|
| 1125 |
|
|
dev->stats.tx_aborted_errors++;
|
| 1126 |
|
|
if (status & TMD3_LCAR)
|
| 1127 |
|
|
dev->stats.tx_carrier_errors++;
|
| 1128 |
|
|
if (status & TMD3_LCOL)
|
| 1129 |
|
|
dev->stats.tx_window_errors++;
|
| 1130 |
|
|
if (status & TMD3_UFLO)
|
| 1131 |
|
|
dev->stats.tx_fifo_errors++;
|
| 1132 |
|
|
if (status & (TMD3_BUFF | TMD3_UFLO)) {
|
| 1133 |
|
|
/* Trigger an immediate send demand. */
|
| 1134 |
|
|
outw(CSR0, DEPCA_ADDR);
|
| 1135 |
|
|
outw(INEA | TDMD, DEPCA_DATA);
|
| 1136 |
|
|
}
|
| 1137 |
|
|
} else if (status & (T_MORE | T_ONE)) {
|
| 1138 |
|
|
dev->stats.collisions++;
|
| 1139 |
|
|
} else {
|
| 1140 |
|
|
dev->stats.tx_packets++;
|
| 1141 |
|
|
}
|
| 1142 |
|
|
|
| 1143 |
|
|
/* Update all the pointers */
|
| 1144 |
|
|
lp->tx_old = (++lp->tx_old) & lp->txRingMask;
|
| 1145 |
|
|
}
|
| 1146 |
|
|
|
| 1147 |
|
|
return 0;
|
| 1148 |
|
|
}
|
| 1149 |
|
|
|
| 1150 |
|
|
static int depca_close(struct net_device *dev)
|
| 1151 |
|
|
{
|
| 1152 |
|
|
struct depca_private *lp = (struct depca_private *) dev->priv;
|
| 1153 |
|
|
s16 nicsr;
|
| 1154 |
|
|
u_long ioaddr = dev->base_addr;
|
| 1155 |
|
|
|
| 1156 |
|
|
netif_stop_queue(dev);
|
| 1157 |
|
|
|
| 1158 |
|
|
outw(CSR0, DEPCA_ADDR);
|
| 1159 |
|
|
|
| 1160 |
|
|
if (depca_debug > 1) {
|
| 1161 |
|
|
printk("%s: Shutting down ethercard, status was %2.2x.\n", dev->name, inw(DEPCA_DATA));
|
| 1162 |
|
|
}
|
| 1163 |
|
|
|
| 1164 |
|
|
/*
|
| 1165 |
|
|
** We stop the DEPCA here -- it occasionally polls
|
| 1166 |
|
|
** memory if we don't.
|
| 1167 |
|
|
*/
|
| 1168 |
|
|
outw(STOP, DEPCA_DATA);
|
| 1169 |
|
|
|
| 1170 |
|
|
/*
|
| 1171 |
|
|
** Give back the ROM in case the user wants to go to DOS
|
| 1172 |
|
|
*/
|
| 1173 |
|
|
if (lp->adapter != DEPCA) {
|
| 1174 |
|
|
nicsr = inb(DEPCA_NICSR);
|
| 1175 |
|
|
nicsr &= ~SHE;
|
| 1176 |
|
|
outb(nicsr, DEPCA_NICSR);
|
| 1177 |
|
|
}
|
| 1178 |
|
|
|
| 1179 |
|
|
/*
|
| 1180 |
|
|
** Free the associated irq
|
| 1181 |
|
|
*/
|
| 1182 |
|
|
free_irq(dev->irq, dev);
|
| 1183 |
|
|
return 0;
|
| 1184 |
|
|
}
|
| 1185 |
|
|
|
| 1186 |
|
|
static void LoadCSRs(struct net_device *dev)
|
| 1187 |
|
|
{
|
| 1188 |
|
|
struct depca_private *lp = (struct depca_private *) dev->priv;
|
| 1189 |
|
|
u_long ioaddr = dev->base_addr;
|
| 1190 |
|
|
|
| 1191 |
|
|
outw(CSR1, DEPCA_ADDR); /* initialisation block address LSW */
|
| 1192 |
|
|
outw((u16) lp->device_ram_start, DEPCA_DATA);
|
| 1193 |
|
|
outw(CSR2, DEPCA_ADDR); /* initialisation block address MSW */
|
| 1194 |
|
|
outw((u16) (lp->device_ram_start >> 16), DEPCA_DATA);
|
| 1195 |
|
|
outw(CSR3, DEPCA_ADDR); /* ALE control */
|
| 1196 |
|
|
outw(ACON, DEPCA_DATA);
|
| 1197 |
|
|
|
| 1198 |
|
|
outw(CSR0, DEPCA_ADDR); /* Point back to CSR0 */
|
| 1199 |
|
|
|
| 1200 |
|
|
return;
|
| 1201 |
|
|
}
|
| 1202 |
|
|
|
| 1203 |
|
|
static int InitRestartDepca(struct net_device *dev)
|
| 1204 |
|
|
{
|
| 1205 |
|
|
struct depca_private *lp = (struct depca_private *) dev->priv;
|
| 1206 |
|
|
u_long ioaddr = dev->base_addr;
|
| 1207 |
|
|
int i, status = 0;
|
| 1208 |
|
|
|
| 1209 |
|
|
/* Copy the shadow init_block to shared memory */
|
| 1210 |
|
|
memcpy_toio(lp->sh_mem, &lp->init_block, sizeof(struct depca_init));
|
| 1211 |
|
|
|
| 1212 |
|
|
outw(CSR0, DEPCA_ADDR); /* point back to CSR0 */
|
| 1213 |
|
|
outw(INIT, DEPCA_DATA); /* initialize DEPCA */
|
| 1214 |
|
|
|
| 1215 |
|
|
/* wait for lance to complete initialisation */
|
| 1216 |
|
|
for (i = 0; (i < 100) && !(inw(DEPCA_DATA) & IDON); i++);
|
| 1217 |
|
|
|
| 1218 |
|
|
if (i != 100) {
|
| 1219 |
|
|
/* clear IDON by writing a "1", enable interrupts and start lance */
|
| 1220 |
|
|
outw(IDON | INEA | STRT, DEPCA_DATA);
|
| 1221 |
|
|
if (depca_debug > 2) {
|
| 1222 |
|
|
printk("%s: DEPCA open after %d ticks, init block 0x%08lx csr0 %4.4x.\n", dev->name, i, lp->mem_start, inw(DEPCA_DATA));
|
| 1223 |
|
|
}
|
| 1224 |
|
|
} else {
|
| 1225 |
|
|
printk("%s: DEPCA unopen after %d ticks, init block 0x%08lx csr0 %4.4x.\n", dev->name, i, lp->mem_start, inw(DEPCA_DATA));
|
| 1226 |
|
|
status = -1;
|
| 1227 |
|
|
}
|
| 1228 |
|
|
|
| 1229 |
|
|
return status;
|
| 1230 |
|
|
}
|
| 1231 |
|
|
|
| 1232 |
|
|
/*
|
| 1233 |
|
|
** Set or clear the multicast filter for this adaptor.
|
| 1234 |
|
|
*/
|
| 1235 |
|
|
static void set_multicast_list(struct net_device *dev)
|
| 1236 |
|
|
{
|
| 1237 |
|
|
struct depca_private *lp = (struct depca_private *) dev->priv;
|
| 1238 |
|
|
u_long ioaddr = dev->base_addr;
|
| 1239 |
|
|
|
| 1240 |
|
|
netif_stop_queue(dev);
|
| 1241 |
|
|
while (lp->tx_old != lp->tx_new); /* Wait for the ring to empty */
|
| 1242 |
|
|
|
| 1243 |
|
|
STOP_DEPCA; /* Temporarily stop the depca. */
|
| 1244 |
|
|
depca_init_ring(dev); /* Initialize the descriptor rings */
|
| 1245 |
|
|
|
| 1246 |
|
|
if (dev->flags & IFF_PROMISC) { /* Set promiscuous mode */
|
| 1247 |
|
|
lp->init_block.mode |= PROM;
|
| 1248 |
|
|
} else {
|
| 1249 |
|
|
SetMulticastFilter(dev);
|
| 1250 |
|
|
lp->init_block.mode &= ~PROM; /* Unset promiscuous mode */
|
| 1251 |
|
|
}
|
| 1252 |
|
|
|
| 1253 |
|
|
LoadCSRs(dev); /* Reload CSR3 */
|
| 1254 |
|
|
InitRestartDepca(dev); /* Resume normal operation. */
|
| 1255 |
|
|
netif_start_queue(dev); /* Unlock the TX ring */
|
| 1256 |
|
|
}
|
| 1257 |
|
|
|
| 1258 |
|
|
/*
|
| 1259 |
|
|
** Calculate the hash code and update the logical address filter
|
| 1260 |
|
|
** from a list of ethernet multicast addresses.
|
| 1261 |
|
|
** Big endian crc one liner is mine, all mine, ha ha ha ha!
|
| 1262 |
|
|
** LANCE calculates its hash codes big endian.
|
| 1263 |
|
|
*/
|
| 1264 |
|
|
static void SetMulticastFilter(struct net_device *dev)
|
| 1265 |
|
|
{
|
| 1266 |
|
|
struct depca_private *lp = (struct depca_private *) dev->priv;
|
| 1267 |
|
|
struct dev_mc_list *dmi = dev->mc_list;
|
| 1268 |
|
|
char *addrs;
|
| 1269 |
|
|
int i, j, bit, byte;
|
| 1270 |
|
|
u16 hashcode;
|
| 1271 |
|
|
u32 crc;
|
| 1272 |
|
|
|
| 1273 |
|
|
if (dev->flags & IFF_ALLMULTI) { /* Set all multicast bits */
|
| 1274 |
|
|
for (i = 0; i < (HASH_TABLE_LEN >> 3); i++) {
|
| 1275 |
|
|
lp->init_block.mcast_table[i] = (char) 0xff;
|
| 1276 |
|
|
}
|
| 1277 |
|
|
} else {
|
| 1278 |
|
|
for (i = 0; i < (HASH_TABLE_LEN >> 3); i++) { /* Clear the multicast table */
|
| 1279 |
|
|
lp->init_block.mcast_table[i] = 0;
|
| 1280 |
|
|
}
|
| 1281 |
|
|
/* Add multicast addresses */
|
| 1282 |
|
|
for (i = 0; i < dev->mc_count; i++) { /* for each address in the list */
|
| 1283 |
|
|
addrs = dmi->dmi_addr;
|
| 1284 |
|
|
dmi = dmi->next;
|
| 1285 |
|
|
if ((*addrs & 0x01) == 1) { /* multicast address? */
|
| 1286 |
|
|
crc = ether_crc(ETH_ALEN, addrs);
|
| 1287 |
|
|
hashcode = (crc & 1); /* hashcode is 6 LSb of CRC ... */
|
| 1288 |
|
|
for (j = 0; j < 5; j++) { /* ... in reverse order. */
|
| 1289 |
|
|
hashcode = (hashcode << 1) | ((crc >>= 1) & 1);
|
| 1290 |
|
|
}
|
| 1291 |
|
|
|
| 1292 |
|
|
|
| 1293 |
|
|
byte = hashcode >> 3; /* bit[3-5] -> byte in filter */
|
| 1294 |
|
|
bit = 1 << (hashcode & 0x07); /* bit[0-2] -> bit in byte */
|
| 1295 |
|
|
lp->init_block.mcast_table[byte] |= bit;
|
| 1296 |
|
|
}
|
| 1297 |
|
|
}
|
| 1298 |
|
|
}
|
| 1299 |
|
|
|
| 1300 |
|
|
return;
|
| 1301 |
|
|
}
|
| 1302 |
|
|
|
| 1303 |
|
|
static int __init depca_common_init (u_long ioaddr, struct net_device **devp)
|
| 1304 |
|
|
{
|
| 1305 |
|
|
int status = 0;
|
| 1306 |
|
|
|
| 1307 |
|
|
if (!request_region (ioaddr, DEPCA_TOTAL_SIZE, depca_string)) {
|
| 1308 |
|
|
status = -EBUSY;
|
| 1309 |
|
|
goto out;
|
| 1310 |
|
|
}
|
| 1311 |
|
|
|
| 1312 |
|
|
if (DevicePresent(ioaddr)) {
|
| 1313 |
|
|
status = -ENODEV;
|
| 1314 |
|
|
goto out_release;
|
| 1315 |
|
|
}
|
| 1316 |
|
|
|
| 1317 |
|
|
if (!(*devp = alloc_etherdev (sizeof (struct depca_private)))) {
|
| 1318 |
|
|
status = -ENOMEM;
|
| 1319 |
|
|
goto out_release;
|
| 1320 |
|
|
}
|
| 1321 |
|
|
|
| 1322 |
|
|
return 0;
|
| 1323 |
|
|
|
| 1324 |
|
|
out_release:
|
| 1325 |
|
|
release_region (ioaddr, DEPCA_TOTAL_SIZE);
|
| 1326 |
|
|
out:
|
| 1327 |
|
|
return status;
|
| 1328 |
|
|
}
|
| 1329 |
|
|
|
| 1330 |
|
|
#ifdef CONFIG_MCA
|
| 1331 |
|
|
/*
|
| 1332 |
|
|
** Microchannel bus I/O device probe
|
| 1333 |
|
|
*/
|
| 1334 |
|
|
static int __init depca_mca_probe(struct device *device)
|
| 1335 |
|
|
{
|
| 1336 |
|
|
unsigned char pos[2];
|
| 1337 |
|
|
unsigned char where;
|
| 1338 |
|
|
unsigned long iobase, mem_start;
|
| 1339 |
|
|
int irq, err;
|
| 1340 |
|
|
struct mca_device *mdev = to_mca_device (device);
|
| 1341 |
|
|
struct net_device *dev;
|
| 1342 |
|
|
struct depca_private *lp;
|
| 1343 |
|
|
|
| 1344 |
|
|
/*
|
| 1345 |
|
|
** Search for the adapter. If an address has been given, search
|
| 1346 |
|
|
** specifically for the card at that address. Otherwise find the
|
| 1347 |
|
|
** first card in the system.
|
| 1348 |
|
|
*/
|
| 1349 |
|
|
|
| 1350 |
|
|
pos[0] = mca_device_read_stored_pos(mdev, 2);
|
| 1351 |
|
|
pos[1] = mca_device_read_stored_pos(mdev, 3);
|
| 1352 |
|
|
|
| 1353 |
|
|
/*
|
| 1354 |
|
|
** IO of card is handled by bits 1 and 2 of pos0.
|
| 1355 |
|
|
**
|
| 1356 |
|
|
** bit2 bit1 IO
|
| 1357 |
|
|
** 0 0 0x2c00
|
| 1358 |
|
|
** 0 1 0x2c10
|
| 1359 |
|
|
** 1 0 0x2c20
|
| 1360 |
|
|
** 1 1 0x2c30
|
| 1361 |
|
|
*/
|
| 1362 |
|
|
where = (pos[0] & 6) >> 1;
|
| 1363 |
|
|
iobase = 0x2c00 + (0x10 * where);
|
| 1364 |
|
|
|
| 1365 |
|
|
/*
|
| 1366 |
|
|
** Found the adapter we were looking for. Now start setting it up.
|
| 1367 |
|
|
**
|
| 1368 |
|
|
** First work on decoding the IRQ. It's stored in the lower 4 bits
|
| 1369 |
|
|
** of pos1. Bits are as follows (from the ADF file):
|
| 1370 |
|
|
**
|
| 1371 |
|
|
** Bits
|
| 1372 |
|
|
** 3 2 1 0 IRQ
|
| 1373 |
|
|
** --------------------
|
| 1374 |
|
|
** 0 0 1 0 5
|
| 1375 |
|
|
** 0 0 0 1 9
|
| 1376 |
|
|
** 0 1 0 0 10
|
| 1377 |
|
|
** 1 0 0 0 11
|
| 1378 |
|
|
*/
|
| 1379 |
|
|
where = pos[1] & 0x0f;
|
| 1380 |
|
|
switch (where) {
|
| 1381 |
|
|
case 1:
|
| 1382 |
|
|
irq = 9;
|
| 1383 |
|
|
break;
|
| 1384 |
|
|
case 2:
|
| 1385 |
|
|
irq = 5;
|
| 1386 |
|
|
break;
|
| 1387 |
|
|
case 4:
|
| 1388 |
|
|
irq = 10;
|
| 1389 |
|
|
break;
|
| 1390 |
|
|
case 8:
|
| 1391 |
|
|
irq = 11;
|
| 1392 |
|
|
break;
|
| 1393 |
|
|
default:
|
| 1394 |
|
|
printk("%s: mca_probe IRQ error. You should never get here (%d).\n", mdev->name, where);
|
| 1395 |
|
|
return -EINVAL;
|
| 1396 |
|
|
}
|
| 1397 |
|
|
|
| 1398 |
|
|
/*
|
| 1399 |
|
|
** Shared memory address of adapter is stored in bits 3-5 of pos0.
|
| 1400 |
|
|
** They are mapped as follows:
|
| 1401 |
|
|
**
|
| 1402 |
|
|
** Bit
|
| 1403 |
|
|
** 5 4 3 Memory Addresses
|
| 1404 |
|
|
** 0 0 0 C0000-CFFFF (64K)
|
| 1405 |
|
|
** 1 0 0 C8000-CFFFF (32K)
|
| 1406 |
|
|
** 0 0 1 D0000-DFFFF (64K)
|
| 1407 |
|
|
** 1 0 1 D8000-DFFFF (32K)
|
| 1408 |
|
|
** 0 1 0 E0000-EFFFF (64K)
|
| 1409 |
|
|
** 1 1 0 E8000-EFFFF (32K)
|
| 1410 |
|
|
*/
|
| 1411 |
|
|
where = (pos[0] & 0x18) >> 3;
|
| 1412 |
|
|
mem_start = 0xc0000 + (where * 0x10000);
|
| 1413 |
|
|
if (pos[0] & 0x20) {
|
| 1414 |
|
|
mem_start += 0x8000;
|
| 1415 |
|
|
}
|
| 1416 |
|
|
|
| 1417 |
|
|
/* claim the slot */
|
| 1418 |
|
|
strncpy(mdev->name, depca_mca_adapter_name[mdev->index],
|
| 1419 |
|
|
sizeof(mdev->name));
|
| 1420 |
|
|
mca_device_set_claim(mdev, 1);
|
| 1421 |
|
|
|
| 1422 |
|
|
/*
|
| 1423 |
|
|
** Get everything allocated and initialized... (almost just
|
| 1424 |
|
|
** like the ISA and EISA probes)
|
| 1425 |
|
|
*/
|
| 1426 |
|
|
irq = mca_device_transform_irq(mdev, irq);
|
| 1427 |
|
|
iobase = mca_device_transform_ioport(mdev, iobase);
|
| 1428 |
|
|
|
| 1429 |
|
|
if ((err = depca_common_init (iobase, &dev)))
|
| 1430 |
|
|
goto out_unclaim;
|
| 1431 |
|
|
|
| 1432 |
|
|
dev->irq = irq;
|
| 1433 |
|
|
dev->base_addr = iobase;
|
| 1434 |
|
|
lp = dev->priv;
|
| 1435 |
|
|
lp->depca_bus = DEPCA_BUS_MCA;
|
| 1436 |
|
|
lp->adapter = depca_mca_adapter_type[mdev->index];
|
| 1437 |
|
|
lp->mem_start = mem_start;
|
| 1438 |
|
|
|
| 1439 |
|
|
if ((err = depca_hw_init(dev, device)))
|
| 1440 |
|
|
goto out_free;
|
| 1441 |
|
|
|
| 1442 |
|
|
return 0;
|
| 1443 |
|
|
|
| 1444 |
|
|
out_free:
|
| 1445 |
|
|
free_netdev (dev);
|
| 1446 |
|
|
release_region (iobase, DEPCA_TOTAL_SIZE);
|
| 1447 |
|
|
out_unclaim:
|
| 1448 |
|
|
mca_device_set_claim(mdev, 0);
|
| 1449 |
|
|
|
| 1450 |
|
|
return err;
|
| 1451 |
|
|
}
|
| 1452 |
|
|
#endif
|
| 1453 |
|
|
|
| 1454 |
|
|
/*
|
| 1455 |
|
|
** ISA bus I/O device probe
|
| 1456 |
|
|
*/
|
| 1457 |
|
|
|
| 1458 |
|
|
static void __init depca_platform_probe (void)
|
| 1459 |
|
|
{
|
| 1460 |
|
|
int i;
|
| 1461 |
|
|
struct platform_device *pldev;
|
| 1462 |
|
|
|
| 1463 |
|
|
for (i = 0; depca_io_ports[i].iobase; i++) {
|
| 1464 |
|
|
depca_io_ports[i].device = NULL;
|
| 1465 |
|
|
|
| 1466 |
|
|
/* if an address has been specified on the command
|
| 1467 |
|
|
* line, use it (if valid) */
|
| 1468 |
|
|
if (io && io != depca_io_ports[i].iobase)
|
| 1469 |
|
|
continue;
|
| 1470 |
|
|
|
| 1471 |
|
|
pldev = platform_device_alloc(depca_string, i);
|
| 1472 |
|
|
if (!pldev)
|
| 1473 |
|
|
continue;
|
| 1474 |
|
|
|
| 1475 |
|
|
pldev->dev.platform_data = (void *) depca_io_ports[i].iobase;
|
| 1476 |
|
|
depca_io_ports[i].device = pldev;
|
| 1477 |
|
|
|
| 1478 |
|
|
if (platform_device_add(pldev)) {
|
| 1479 |
|
|
depca_io_ports[i].device = NULL;
|
| 1480 |
|
|
pldev->dev.platform_data = NULL;
|
| 1481 |
|
|
platform_device_put(pldev);
|
| 1482 |
|
|
continue;
|
| 1483 |
|
|
}
|
| 1484 |
|
|
|
| 1485 |
|
|
if (!pldev->dev.driver) {
|
| 1486 |
|
|
/* The driver was not bound to this device, there was
|
| 1487 |
|
|
* no hardware at this address. Unregister it, as the
|
| 1488 |
|
|
* release fuction will take care of freeing the
|
| 1489 |
|
|
* allocated structure */
|
| 1490 |
|
|
|
| 1491 |
|
|
depca_io_ports[i].device = NULL;
|
| 1492 |
|
|
pldev->dev.platform_data = NULL;
|
| 1493 |
|
|
platform_device_unregister (pldev);
|
| 1494 |
|
|
}
|
| 1495 |
|
|
}
|
| 1496 |
|
|
}
|
| 1497 |
|
|
|
| 1498 |
|
|
static enum depca_type __init depca_shmem_probe (ulong *mem_start)
|
| 1499 |
|
|
{
|
| 1500 |
|
|
u_long mem_base[] = DEPCA_RAM_BASE_ADDRESSES;
|
| 1501 |
|
|
enum depca_type adapter = unknown;
|
| 1502 |
|
|
int i;
|
| 1503 |
|
|
|
| 1504 |
|
|
for (i = 0; mem_base[i]; i++) {
|
| 1505 |
|
|
*mem_start = mem ? mem : mem_base[i];
|
| 1506 |
|
|
adapter = DepcaSignature (adapter_name, *mem_start);
|
| 1507 |
|
|
if (adapter != unknown)
|
| 1508 |
|
|
break;
|
| 1509 |
|
|
}
|
| 1510 |
|
|
|
| 1511 |
|
|
return adapter;
|
| 1512 |
|
|
}
|
| 1513 |
|
|
|
| 1514 |
|
|
static int __init depca_isa_probe (struct platform_device *device)
|
| 1515 |
|
|
{
|
| 1516 |
|
|
struct net_device *dev;
|
| 1517 |
|
|
struct depca_private *lp;
|
| 1518 |
|
|
u_long ioaddr, mem_start = 0;
|
| 1519 |
|
|
enum depca_type adapter = unknown;
|
| 1520 |
|
|
int status = 0;
|
| 1521 |
|
|
|
| 1522 |
|
|
ioaddr = (u_long) device->dev.platform_data;
|
| 1523 |
|
|
|
| 1524 |
|
|
if ((status = depca_common_init (ioaddr, &dev)))
|
| 1525 |
|
|
goto out;
|
| 1526 |
|
|
|
| 1527 |
|
|
adapter = depca_shmem_probe (&mem_start);
|
| 1528 |
|
|
|
| 1529 |
|
|
if (adapter == unknown) {
|
| 1530 |
|
|
status = -ENODEV;
|
| 1531 |
|
|
goto out_free;
|
| 1532 |
|
|
}
|
| 1533 |
|
|
|
| 1534 |
|
|
dev->base_addr = ioaddr;
|
| 1535 |
|
|
dev->irq = irq; /* Use whatever value the user gave
|
| 1536 |
|
|
* us, and 0 if he didn't. */
|
| 1537 |
|
|
lp = dev->priv;
|
| 1538 |
|
|
lp->depca_bus = DEPCA_BUS_ISA;
|
| 1539 |
|
|
lp->adapter = adapter;
|
| 1540 |
|
|
lp->mem_start = mem_start;
|
| 1541 |
|
|
|
| 1542 |
|
|
if ((status = depca_hw_init(dev, &device->dev)))
|
| 1543 |
|
|
goto out_free;
|
| 1544 |
|
|
|
| 1545 |
|
|
return 0;
|
| 1546 |
|
|
|
| 1547 |
|
|
out_free:
|
| 1548 |
|
|
free_netdev (dev);
|
| 1549 |
|
|
release_region (ioaddr, DEPCA_TOTAL_SIZE);
|
| 1550 |
|
|
out:
|
| 1551 |
|
|
return status;
|
| 1552 |
|
|
}
|
| 1553 |
|
|
|
| 1554 |
|
|
/*
|
| 1555 |
|
|
** EISA callbacks from sysfs.
|
| 1556 |
|
|
*/
|
| 1557 |
|
|
|
| 1558 |
|
|
#ifdef CONFIG_EISA
|
| 1559 |
|
|
static int __init depca_eisa_probe (struct device *device)
|
| 1560 |
|
|
{
|
| 1561 |
|
|
struct eisa_device *edev;
|
| 1562 |
|
|
struct net_device *dev;
|
| 1563 |
|
|
struct depca_private *lp;
|
| 1564 |
|
|
u_long ioaddr, mem_start;
|
| 1565 |
|
|
int status = 0;
|
| 1566 |
|
|
|
| 1567 |
|
|
edev = to_eisa_device (device);
|
| 1568 |
|
|
ioaddr = edev->base_addr + DEPCA_EISA_IO_PORTS;
|
| 1569 |
|
|
|
| 1570 |
|
|
if ((status = depca_common_init (ioaddr, &dev)))
|
| 1571 |
|
|
goto out;
|
| 1572 |
|
|
|
| 1573 |
|
|
/* It would have been nice to get card configuration from the
|
| 1574 |
|
|
* card. Unfortunately, this register is write-only (shares
|
| 1575 |
|
|
* it's address with the ethernet prom)... As we don't parse
|
| 1576 |
|
|
* the EISA configuration structures (yet... :-), just rely on
|
| 1577 |
|
|
* the ISA probing to sort it out... */
|
| 1578 |
|
|
|
| 1579 |
|
|
depca_shmem_probe (&mem_start);
|
| 1580 |
|
|
|
| 1581 |
|
|
dev->base_addr = ioaddr;
|
| 1582 |
|
|
dev->irq = irq;
|
| 1583 |
|
|
lp = dev->priv;
|
| 1584 |
|
|
lp->depca_bus = DEPCA_BUS_EISA;
|
| 1585 |
|
|
lp->adapter = edev->id.driver_data;
|
| 1586 |
|
|
lp->mem_start = mem_start;
|
| 1587 |
|
|
|
| 1588 |
|
|
if ((status = depca_hw_init(dev, device)))
|
| 1589 |
|
|
goto out_free;
|
| 1590 |
|
|
|
| 1591 |
|
|
return 0;
|
| 1592 |
|
|
|
| 1593 |
|
|
out_free:
|
| 1594 |
|
|
free_netdev (dev);
|
| 1595 |
|
|
release_region (ioaddr, DEPCA_TOTAL_SIZE);
|
| 1596 |
|
|
out:
|
| 1597 |
|
|
return status;
|
| 1598 |
|
|
}
|
| 1599 |
|
|
#endif
|
| 1600 |
|
|
|
| 1601 |
|
|
static int __devexit depca_device_remove (struct device *device)
|
| 1602 |
|
|
{
|
| 1603 |
|
|
struct net_device *dev;
|
| 1604 |
|
|
struct depca_private *lp;
|
| 1605 |
|
|
int bus;
|
| 1606 |
|
|
|
| 1607 |
|
|
dev = device->driver_data;
|
| 1608 |
|
|
lp = dev->priv;
|
| 1609 |
|
|
|
| 1610 |
|
|
unregister_netdev (dev);
|
| 1611 |
|
|
iounmap (lp->sh_mem);
|
| 1612 |
|
|
release_mem_region (lp->mem_start, lp->mem_len);
|
| 1613 |
|
|
release_region (dev->base_addr, DEPCA_TOTAL_SIZE);
|
| 1614 |
|
|
bus = lp->depca_bus;
|
| 1615 |
|
|
free_netdev (dev);
|
| 1616 |
|
|
|
| 1617 |
|
|
return 0;
|
| 1618 |
|
|
}
|
| 1619 |
|
|
|
| 1620 |
|
|
/*
|
| 1621 |
|
|
** Look for a particular board name in the on-board Remote Diagnostics
|
| 1622 |
|
|
** and Boot (readb) ROM. This will also give us a clue to the network RAM
|
| 1623 |
|
|
** base address.
|
| 1624 |
|
|
*/
|
| 1625 |
|
|
static int __init DepcaSignature(char *name, u_long base_addr)
|
| 1626 |
|
|
{
|
| 1627 |
|
|
u_int i, j, k;
|
| 1628 |
|
|
void __iomem *ptr;
|
| 1629 |
|
|
char tmpstr[16];
|
| 1630 |
|
|
u_long prom_addr = base_addr + 0xc000;
|
| 1631 |
|
|
u_long mem_addr = base_addr + 0x8000; /* 32KB */
|
| 1632 |
|
|
|
| 1633 |
|
|
/* Can't reserve the prom region, it is already marked as
|
| 1634 |
|
|
* used, at least on x86. Instead, reserve a memory region a
|
| 1635 |
|
|
* board would certainly use. If it works, go ahead. If not,
|
| 1636 |
|
|
* run like hell... */
|
| 1637 |
|
|
|
| 1638 |
|
|
if (!request_mem_region (mem_addr, 16, depca_string))
|
| 1639 |
|
|
return unknown;
|
| 1640 |
|
|
|
| 1641 |
|
|
/* Copy the first 16 bytes of ROM */
|
| 1642 |
|
|
|
| 1643 |
|
|
ptr = ioremap(prom_addr, 16);
|
| 1644 |
|
|
if (ptr == NULL) {
|
| 1645 |
|
|
printk(KERN_ERR "depca: I/O remap failed at %lx\n", prom_addr);
|
| 1646 |
|
|
return unknown;
|
| 1647 |
|
|
}
|
| 1648 |
|
|
for (i = 0; i < 16; i++) {
|
| 1649 |
|
|
tmpstr[i] = readb(ptr + i);
|
| 1650 |
|
|
}
|
| 1651 |
|
|
iounmap(ptr);
|
| 1652 |
|
|
|
| 1653 |
|
|
release_mem_region (mem_addr, 16);
|
| 1654 |
|
|
|
| 1655 |
|
|
/* Check if PROM contains a valid string */
|
| 1656 |
|
|
for (i = 0; *depca_signature[i] != '\0'; i++) {
|
| 1657 |
|
|
for (j = 0, k = 0; j < 16 && k < strlen(depca_signature[i]); j++) {
|
| 1658 |
|
|
if (depca_signature[i][k] == tmpstr[j]) { /* track signature */
|
| 1659 |
|
|
k++;
|
| 1660 |
|
|
} else { /* lost signature; begin search again */
|
| 1661 |
|
|
k = 0;
|
| 1662 |
|
|
}
|
| 1663 |
|
|
}
|
| 1664 |
|
|
if (k == strlen(depca_signature[i]))
|
| 1665 |
|
|
break;
|
| 1666 |
|
|
}
|
| 1667 |
|
|
|
| 1668 |
|
|
/* Check if name string is valid, provided there's no PROM */
|
| 1669 |
|
|
if (name && *name && (i == unknown)) {
|
| 1670 |
|
|
for (i = 0; *depca_signature[i] != '\0'; i++) {
|
| 1671 |
|
|
if (strcmp(name, depca_signature[i]) == 0)
|
| 1672 |
|
|
break;
|
| 1673 |
|
|
}
|
| 1674 |
|
|
}
|
| 1675 |
|
|
|
| 1676 |
|
|
return i;
|
| 1677 |
|
|
}
|
| 1678 |
|
|
|
| 1679 |
|
|
/*
|
| 1680 |
|
|
** Look for a special sequence in the Ethernet station address PROM that
|
| 1681 |
|
|
** is common across all DEPCA products. Note that the original DEPCA needs
|
| 1682 |
|
|
** its ROM address counter to be initialized and enabled. Only enable
|
| 1683 |
|
|
** if the first address octet is a 0x08 - this minimises the chances of
|
| 1684 |
|
|
** messing around with some other hardware, but it assumes that this DEPCA
|
| 1685 |
|
|
** card initialized itself correctly.
|
| 1686 |
|
|
**
|
| 1687 |
|
|
** Search the Ethernet address ROM for the signature. Since the ROM address
|
| 1688 |
|
|
** counter can start at an arbitrary point, the search must include the entire
|
| 1689 |
|
|
** probe sequence length plus the (length_of_the_signature - 1).
|
| 1690 |
|
|
** Stop the search IMMEDIATELY after the signature is found so that the
|
| 1691 |
|
|
** PROM address counter is correctly positioned at the start of the
|
| 1692 |
|
|
** ethernet address for later read out.
|
| 1693 |
|
|
*/
|
| 1694 |
|
|
static int __init DevicePresent(u_long ioaddr)
|
| 1695 |
|
|
{
|
| 1696 |
|
|
union {
|
| 1697 |
|
|
struct {
|
| 1698 |
|
|
u32 a;
|
| 1699 |
|
|
u32 b;
|
| 1700 |
|
|
} llsig;
|
| 1701 |
|
|
char Sig[sizeof(u32) << 1];
|
| 1702 |
|
|
}
|
| 1703 |
|
|
dev;
|
| 1704 |
|
|
short sigLength = 0;
|
| 1705 |
|
|
s8 data;
|
| 1706 |
|
|
s16 nicsr;
|
| 1707 |
|
|
int i, j, status = 0;
|
| 1708 |
|
|
|
| 1709 |
|
|
data = inb(DEPCA_PROM); /* clear counter on DEPCA */
|
| 1710 |
|
|
data = inb(DEPCA_PROM); /* read data */
|
| 1711 |
|
|
|
| 1712 |
|
|
if (data == 0x08) { /* Enable counter on DEPCA */
|
| 1713 |
|
|
nicsr = inb(DEPCA_NICSR);
|
| 1714 |
|
|
nicsr |= AAC;
|
| 1715 |
|
|
outb(nicsr, DEPCA_NICSR);
|
| 1716 |
|
|
}
|
| 1717 |
|
|
|
| 1718 |
|
|
dev.llsig.a = ETH_PROM_SIG;
|
| 1719 |
|
|
dev.llsig.b = ETH_PROM_SIG;
|
| 1720 |
|
|
sigLength = sizeof(u32) << 1;
|
| 1721 |
|
|
|
| 1722 |
|
|
for (i = 0, j = 0; j < sigLength && i < PROBE_LENGTH + sigLength - 1; i++) {
|
| 1723 |
|
|
data = inb(DEPCA_PROM);
|
| 1724 |
|
|
if (dev.Sig[j] == data) { /* track signature */
|
| 1725 |
|
|
j++;
|
| 1726 |
|
|
} else { /* lost signature; begin search again */
|
| 1727 |
|
|
if (data == dev.Sig[0]) { /* rare case.... */
|
| 1728 |
|
|
j = 1;
|
| 1729 |
|
|
} else {
|
| 1730 |
|
|
j = 0;
|
| 1731 |
|
|
}
|
| 1732 |
|
|
}
|
| 1733 |
|
|
}
|
| 1734 |
|
|
|
| 1735 |
|
|
if (j != sigLength) {
|
| 1736 |
|
|
status = -ENODEV; /* search failed */
|
| 1737 |
|
|
}
|
| 1738 |
|
|
|
| 1739 |
|
|
return status;
|
| 1740 |
|
|
}
|
| 1741 |
|
|
|
| 1742 |
|
|
/*
|
| 1743 |
|
|
** The DE100 and DE101 PROM accesses were made non-standard for some bizarre
|
| 1744 |
|
|
** reason: access the upper half of the PROM with x=0; access the lower half
|
| 1745 |
|
|
** with x=1.
|
| 1746 |
|
|
*/
|
| 1747 |
|
|
static int __init get_hw_addr(struct net_device *dev)
|
| 1748 |
|
|
{
|
| 1749 |
|
|
u_long ioaddr = dev->base_addr;
|
| 1750 |
|
|
struct depca_private *lp = dev->priv;
|
| 1751 |
|
|
int i, k, tmp, status = 0;
|
| 1752 |
|
|
u_short j, x, chksum;
|
| 1753 |
|
|
|
| 1754 |
|
|
x = (((lp->adapter == de100) || (lp->adapter == de101)) ? 1 : 0);
|
| 1755 |
|
|
|
| 1756 |
|
|
for (i = 0, k = 0, j = 0; j < 3; j++) {
|
| 1757 |
|
|
k <<= 1;
|
| 1758 |
|
|
if (k > 0xffff)
|
| 1759 |
|
|
k -= 0xffff;
|
| 1760 |
|
|
|
| 1761 |
|
|
k += (u_char) (tmp = inb(DEPCA_PROM + x));
|
| 1762 |
|
|
dev->dev_addr[i++] = (u_char) tmp;
|
| 1763 |
|
|
k += (u_short) ((tmp = inb(DEPCA_PROM + x)) << 8);
|
| 1764 |
|
|
dev->dev_addr[i++] = (u_char) tmp;
|
| 1765 |
|
|
|
| 1766 |
|
|
if (k > 0xffff)
|
| 1767 |
|
|
k -= 0xffff;
|
| 1768 |
|
|
}
|
| 1769 |
|
|
if (k == 0xffff)
|
| 1770 |
|
|
k = 0;
|
| 1771 |
|
|
|
| 1772 |
|
|
chksum = (u_char) inb(DEPCA_PROM + x);
|
| 1773 |
|
|
chksum |= (u_short) (inb(DEPCA_PROM + x) << 8);
|
| 1774 |
|
|
if (k != chksum)
|
| 1775 |
|
|
status = -1;
|
| 1776 |
|
|
|
| 1777 |
|
|
return status;
|
| 1778 |
|
|
}
|
| 1779 |
|
|
|
| 1780 |
|
|
/*
|
| 1781 |
|
|
** Load a packet into the shared memory
|
| 1782 |
|
|
*/
|
| 1783 |
|
|
static int load_packet(struct net_device *dev, struct sk_buff *skb)
|
| 1784 |
|
|
{
|
| 1785 |
|
|
struct depca_private *lp = (struct depca_private *) dev->priv;
|
| 1786 |
|
|
int i, entry, end, len, status = 0;
|
| 1787 |
|
|
|
| 1788 |
|
|
entry = lp->tx_new; /* Ring around buffer number. */
|
| 1789 |
|
|
end = (entry + (skb->len - 1) / TX_BUFF_SZ) & lp->txRingMask;
|
| 1790 |
|
|
if (!(readl(&lp->tx_ring[end].base) & T_OWN)) { /* Enough room? */
|
| 1791 |
|
|
/*
|
| 1792 |
|
|
** Caution: the write order is important here... don't set up the
|
| 1793 |
|
|
** ownership rights until all the other information is in place.
|
| 1794 |
|
|
*/
|
| 1795 |
|
|
if (end < entry) { /* wrapped buffer */
|
| 1796 |
|
|
len = (lp->txRingMask - entry + 1) * TX_BUFF_SZ;
|
| 1797 |
|
|
memcpy_toio(lp->tx_buff[entry], skb->data, len);
|
| 1798 |
|
|
memcpy_toio(lp->tx_buff[0], skb->data + len, skb->len - len);
|
| 1799 |
|
|
} else { /* linear buffer */
|
| 1800 |
|
|
memcpy_toio(lp->tx_buff[entry], skb->data, skb->len);
|
| 1801 |
|
|
}
|
| 1802 |
|
|
|
| 1803 |
|
|
/* set up the buffer descriptors */
|
| 1804 |
|
|
len = (skb->len < ETH_ZLEN) ? ETH_ZLEN : skb->len;
|
| 1805 |
|
|
for (i = entry; i != end; i = (i+1) & lp->txRingMask) {
|
| 1806 |
|
|
/* clean out flags */
|
| 1807 |
|
|
writel(readl(&lp->tx_ring[i].base) & ~T_FLAGS, &lp->tx_ring[i].base);
|
| 1808 |
|
|
writew(0x0000, &lp->tx_ring[i].misc); /* clears other error flags */
|
| 1809 |
|
|
writew(-TX_BUFF_SZ, &lp->tx_ring[i].length); /* packet length in buffer */
|
| 1810 |
|
|
len -= TX_BUFF_SZ;
|
| 1811 |
|
|
}
|
| 1812 |
|
|
/* clean out flags */
|
| 1813 |
|
|
writel(readl(&lp->tx_ring[end].base) & ~T_FLAGS, &lp->tx_ring[end].base);
|
| 1814 |
|
|
writew(0x0000, &lp->tx_ring[end].misc); /* clears other error flags */
|
| 1815 |
|
|
writew(-len, &lp->tx_ring[end].length); /* packet length in last buff */
|
| 1816 |
|
|
|
| 1817 |
|
|
/* start of packet */
|
| 1818 |
|
|
writel(readl(&lp->tx_ring[entry].base) | T_STP, &lp->tx_ring[entry].base);
|
| 1819 |
|
|
/* end of packet */
|
| 1820 |
|
|
writel(readl(&lp->tx_ring[end].base) | T_ENP, &lp->tx_ring[end].base);
|
| 1821 |
|
|
|
| 1822 |
|
|
for (i = end; i != entry; --i) {
|
| 1823 |
|
|
/* ownership of packet */
|
| 1824 |
|
|
writel(readl(&lp->tx_ring[i].base) | T_OWN, &lp->tx_ring[i].base);
|
| 1825 |
|
|
if (i == 0)
|
| 1826 |
|
|
i = lp->txRingMask + 1;
|
| 1827 |
|
|
}
|
| 1828 |
|
|
writel(readl(&lp->tx_ring[entry].base) | T_OWN, &lp->tx_ring[entry].base);
|
| 1829 |
|
|
|
| 1830 |
|
|
lp->tx_new = (++end) & lp->txRingMask; /* update current pointers */
|
| 1831 |
|
|
} else {
|
| 1832 |
|
|
status = -1;
|
| 1833 |
|
|
}
|
| 1834 |
|
|
|
| 1835 |
|
|
return status;
|
| 1836 |
|
|
}
|
| 1837 |
|
|
|
| 1838 |
|
|
static void depca_dbg_open(struct net_device *dev)
|
| 1839 |
|
|
{
|
| 1840 |
|
|
struct depca_private *lp = (struct depca_private *) dev->priv;
|
| 1841 |
|
|
u_long ioaddr = dev->base_addr;
|
| 1842 |
|
|
struct depca_init *p = &lp->init_block;
|
| 1843 |
|
|
int i;
|
| 1844 |
|
|
DECLARE_MAC_BUF(mac);
|
| 1845 |
|
|
|
| 1846 |
|
|
if (depca_debug > 1) {
|
| 1847 |
|
|
/* Do not copy the shadow init block into shared memory */
|
| 1848 |
|
|
/* Debugging should not affect normal operation! */
|
| 1849 |
|
|
/* The shadow init block will get copied across during InitRestartDepca */
|
| 1850 |
|
|
printk("%s: depca open with irq %d\n", dev->name, dev->irq);
|
| 1851 |
|
|
printk("Descriptor head addresses (CPU):\n");
|
| 1852 |
|
|
printk(" 0x%lx 0x%lx\n", (u_long) lp->rx_ring, (u_long) lp->tx_ring);
|
| 1853 |
|
|
printk("Descriptor addresses (CPU):\nRX: ");
|
| 1854 |
|
|
for (i = 0; i < lp->rxRingMask; i++) {
|
| 1855 |
|
|
if (i < 3) {
|
| 1856 |
|
|
printk("%p ", &lp->rx_ring[i].base);
|
| 1857 |
|
|
}
|
| 1858 |
|
|
}
|
| 1859 |
|
|
printk("...%p\n", &lp->rx_ring[i].base);
|
| 1860 |
|
|
printk("TX: ");
|
| 1861 |
|
|
for (i = 0; i < lp->txRingMask; i++) {
|
| 1862 |
|
|
if (i < 3) {
|
| 1863 |
|
|
printk("%p ", &lp->tx_ring[i].base);
|
| 1864 |
|
|
}
|
| 1865 |
|
|
}
|
| 1866 |
|
|
printk("...%p\n", &lp->tx_ring[i].base);
|
| 1867 |
|
|
printk("\nDescriptor buffers (Device):\nRX: ");
|
| 1868 |
|
|
for (i = 0; i < lp->rxRingMask; i++) {
|
| 1869 |
|
|
if (i < 3) {
|
| 1870 |
|
|
printk("0x%8.8x ", readl(&lp->rx_ring[i].base));
|
| 1871 |
|
|
}
|
| 1872 |
|
|
}
|
| 1873 |
|
|
printk("...0x%8.8x\n", readl(&lp->rx_ring[i].base));
|
| 1874 |
|
|
printk("TX: ");
|
| 1875 |
|
|
for (i = 0; i < lp->txRingMask; i++) {
|
| 1876 |
|
|
if (i < 3) {
|
| 1877 |
|
|
printk("0x%8.8x ", readl(&lp->tx_ring[i].base));
|
| 1878 |
|
|
}
|
| 1879 |
|
|
}
|
| 1880 |
|
|
printk("...0x%8.8x\n", readl(&lp->tx_ring[i].base));
|
| 1881 |
|
|
printk("Initialisation block at 0x%8.8lx(Phys)\n", lp->mem_start);
|
| 1882 |
|
|
printk(" mode: 0x%4.4x\n", p->mode);
|
| 1883 |
|
|
printk(" physical address: %s\n", print_mac(mac, p->phys_addr));
|
| 1884 |
|
|
printk(" multicast hash table: ");
|
| 1885 |
|
|
for (i = 0; i < (HASH_TABLE_LEN >> 3) - 1; i++) {
|
| 1886 |
|
|
printk("%2.2x:", p->mcast_table[i]);
|
| 1887 |
|
|
}
|
| 1888 |
|
|
printk("%2.2x\n", p->mcast_table[i]);
|
| 1889 |
|
|
printk(" rx_ring at: 0x%8.8x\n", p->rx_ring);
|
| 1890 |
|
|
printk(" tx_ring at: 0x%8.8x\n", p->tx_ring);
|
| 1891 |
|
|
printk("buffers (Phys): 0x%8.8lx\n", lp->mem_start + lp->buffs_offset);
|
| 1892 |
|
|
printk("Ring size:\nRX: %d Log2(rxRingMask): 0x%8.8x\n", (int) lp->rxRingMask + 1, lp->rx_rlen);
|
| 1893 |
|
|
printk("TX: %d Log2(txRingMask): 0x%8.8x\n", (int) lp->txRingMask + 1, lp->tx_rlen);
|
| 1894 |
|
|
outw(CSR2, DEPCA_ADDR);
|
| 1895 |
|
|
printk("CSR2&1: 0x%4.4x", inw(DEPCA_DATA));
|
| 1896 |
|
|
outw(CSR1, DEPCA_ADDR);
|
| 1897 |
|
|
printk("%4.4x\n", inw(DEPCA_DATA));
|
| 1898 |
|
|
outw(CSR3, DEPCA_ADDR);
|
| 1899 |
|
|
printk("CSR3: 0x%4.4x\n", inw(DEPCA_DATA));
|
| 1900 |
|
|
}
|
| 1901 |
|
|
|
| 1902 |
|
|
return;
|
| 1903 |
|
|
}
|
| 1904 |
|
|
|
| 1905 |
|
|
/*
|
| 1906 |
|
|
** Perform IOCTL call functions here. Some are privileged operations and the
|
| 1907 |
|
|
** effective uid is checked in those cases.
|
| 1908 |
|
|
** All multicast IOCTLs will not work here and are for testing purposes only.
|
| 1909 |
|
|
*/
|
| 1910 |
|
|
static int depca_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
|
| 1911 |
|
|
{
|
| 1912 |
|
|
struct depca_private *lp = (struct depca_private *) dev->priv;
|
| 1913 |
|
|
struct depca_ioctl *ioc = (struct depca_ioctl *) &rq->ifr_ifru;
|
| 1914 |
|
|
int i, status = 0;
|
| 1915 |
|
|
u_long ioaddr = dev->base_addr;
|
| 1916 |
|
|
union {
|
| 1917 |
|
|
u8 addr[(HASH_TABLE_LEN * ETH_ALEN)];
|
| 1918 |
|
|
u16 sval[(HASH_TABLE_LEN * ETH_ALEN) >> 1];
|
| 1919 |
|
|
u32 lval[(HASH_TABLE_LEN * ETH_ALEN) >> 2];
|
| 1920 |
|
|
} tmp;
|
| 1921 |
|
|
unsigned long flags;
|
| 1922 |
|
|
void *buf;
|
| 1923 |
|
|
|
| 1924 |
|
|
switch (ioc->cmd) {
|
| 1925 |
|
|
case DEPCA_GET_HWADDR: /* Get the hardware address */
|
| 1926 |
|
|
for (i = 0; i < ETH_ALEN; i++) {
|
| 1927 |
|
|
tmp.addr[i] = dev->dev_addr[i];
|
| 1928 |
|
|
}
|
| 1929 |
|
|
ioc->len = ETH_ALEN;
|
| 1930 |
|
|
if (copy_to_user(ioc->data, tmp.addr, ioc->len))
|
| 1931 |
|
|
return -EFAULT;
|
| 1932 |
|
|
break;
|
| 1933 |
|
|
|
| 1934 |
|
|
case DEPCA_SET_HWADDR: /* Set the hardware address */
|
| 1935 |
|
|
if (!capable(CAP_NET_ADMIN))
|
| 1936 |
|
|
return -EPERM;
|
| 1937 |
|
|
if (copy_from_user(tmp.addr, ioc->data, ETH_ALEN))
|
| 1938 |
|
|
return -EFAULT;
|
| 1939 |
|
|
for (i = 0; i < ETH_ALEN; i++) {
|
| 1940 |
|
|
dev->dev_addr[i] = tmp.addr[i];
|
| 1941 |
|
|
}
|
| 1942 |
|
|
netif_stop_queue(dev);
|
| 1943 |
|
|
while (lp->tx_old != lp->tx_new)
|
| 1944 |
|
|
cpu_relax(); /* Wait for the ring to empty */
|
| 1945 |
|
|
|
| 1946 |
|
|
STOP_DEPCA; /* Temporarily stop the depca. */
|
| 1947 |
|
|
depca_init_ring(dev); /* Initialize the descriptor rings */
|
| 1948 |
|
|
LoadCSRs(dev); /* Reload CSR3 */
|
| 1949 |
|
|
InitRestartDepca(dev); /* Resume normal operation. */
|
| 1950 |
|
|
netif_start_queue(dev); /* Unlock the TX ring */
|
| 1951 |
|
|
break;
|
| 1952 |
|
|
|
| 1953 |
|
|
case DEPCA_SET_PROM: /* Set Promiscuous Mode */
|
| 1954 |
|
|
if (!capable(CAP_NET_ADMIN))
|
| 1955 |
|
|
return -EPERM;
|
| 1956 |
|
|
netif_stop_queue(dev);
|
| 1957 |
|
|
while (lp->tx_old != lp->tx_new)
|
| 1958 |
|
|
cpu_relax(); /* Wait for the ring to empty */
|
| 1959 |
|
|
|
| 1960 |
|
|
STOP_DEPCA; /* Temporarily stop the depca. */
|
| 1961 |
|
|
depca_init_ring(dev); /* Initialize the descriptor rings */
|
| 1962 |
|
|
lp->init_block.mode |= PROM; /* Set promiscuous mode */
|
| 1963 |
|
|
|
| 1964 |
|
|
LoadCSRs(dev); /* Reload CSR3 */
|
| 1965 |
|
|
InitRestartDepca(dev); /* Resume normal operation. */
|
| 1966 |
|
|
netif_start_queue(dev); /* Unlock the TX ring */
|
| 1967 |
|
|
break;
|
| 1968 |
|
|
|
| 1969 |
|
|
case DEPCA_CLR_PROM: /* Clear Promiscuous Mode */
|
| 1970 |
|
|
if (!capable(CAP_NET_ADMIN))
|
| 1971 |
|
|
return -EPERM;
|
| 1972 |
|
|
netif_stop_queue(dev);
|
| 1973 |
|
|
while (lp->tx_old != lp->tx_new)
|
| 1974 |
|
|
cpu_relax(); /* Wait for the ring to empty */
|
| 1975 |
|
|
|
| 1976 |
|
|
STOP_DEPCA; /* Temporarily stop the depca. */
|
| 1977 |
|
|
depca_init_ring(dev); /* Initialize the descriptor rings */
|
| 1978 |
|
|
lp->init_block.mode &= ~PROM; /* Clear promiscuous mode */
|
| 1979 |
|
|
|
| 1980 |
|
|
LoadCSRs(dev); /* Reload CSR3 */
|
| 1981 |
|
|
InitRestartDepca(dev); /* Resume normal operation. */
|
| 1982 |
|
|
netif_start_queue(dev); /* Unlock the TX ring */
|
| 1983 |
|
|
break;
|
| 1984 |
|
|
|
| 1985 |
|
|
case DEPCA_SAY_BOO: /* Say "Boo!" to the kernel log file */
|
| 1986 |
|
|
if(!capable(CAP_NET_ADMIN))
|
| 1987 |
|
|
return -EPERM;
|
| 1988 |
|
|
printk("%s: Boo!\n", dev->name);
|
| 1989 |
|
|
break;
|
| 1990 |
|
|
|
| 1991 |
|
|
case DEPCA_GET_MCA: /* Get the multicast address table */
|
| 1992 |
|
|
ioc->len = (HASH_TABLE_LEN >> 3);
|
| 1993 |
|
|
if (copy_to_user(ioc->data, lp->init_block.mcast_table, ioc->len))
|
| 1994 |
|
|
return -EFAULT;
|
| 1995 |
|
|
break;
|
| 1996 |
|
|
|
| 1997 |
|
|
case DEPCA_SET_MCA: /* Set a multicast address */
|
| 1998 |
|
|
if (!capable(CAP_NET_ADMIN))
|
| 1999 |
|
|
return -EPERM;
|
| 2000 |
|
|
if (ioc->len >= HASH_TABLE_LEN)
|
| 2001 |
|
|
return -EINVAL;
|
| 2002 |
|
|
if (copy_from_user(tmp.addr, ioc->data, ETH_ALEN * ioc->len))
|
| 2003 |
|
|
return -EFAULT;
|
| 2004 |
|
|
set_multicast_list(dev);
|
| 2005 |
|
|
break;
|
| 2006 |
|
|
|
| 2007 |
|
|
case DEPCA_CLR_MCA: /* Clear all multicast addresses */
|
| 2008 |
|
|
if (!capable(CAP_NET_ADMIN))
|
| 2009 |
|
|
return -EPERM;
|
| 2010 |
|
|
set_multicast_list(dev);
|
| 2011 |
|
|
break;
|
| 2012 |
|
|
|
| 2013 |
|
|
case DEPCA_MCA_EN: /* Enable pass all multicast addressing */
|
| 2014 |
|
|
if (!capable(CAP_NET_ADMIN))
|
| 2015 |
|
|
return -EPERM;
|
| 2016 |
|
|
set_multicast_list(dev);
|
| 2017 |
|
|
break;
|
| 2018 |
|
|
|
| 2019 |
|
|
case DEPCA_GET_STATS: /* Get the driver statistics */
|
| 2020 |
|
|
ioc->len = sizeof(lp->pktStats);
|
| 2021 |
|
|
buf = kmalloc(ioc->len, GFP_KERNEL);
|
| 2022 |
|
|
if(!buf)
|
| 2023 |
|
|
return -ENOMEM;
|
| 2024 |
|
|
spin_lock_irqsave(&lp->lock, flags);
|
| 2025 |
|
|
memcpy(buf, &lp->pktStats, ioc->len);
|
| 2026 |
|
|
spin_unlock_irqrestore(&lp->lock, flags);
|
| 2027 |
|
|
if (copy_to_user(ioc->data, buf, ioc->len))
|
| 2028 |
|
|
status = -EFAULT;
|
| 2029 |
|
|
kfree(buf);
|
| 2030 |
|
|
break;
|
| 2031 |
|
|
|
| 2032 |
|
|
case DEPCA_CLR_STATS: /* Zero out the driver statistics */
|
| 2033 |
|
|
if (!capable(CAP_NET_ADMIN))
|
| 2034 |
|
|
return -EPERM;
|
| 2035 |
|
|
spin_lock_irqsave(&lp->lock, flags);
|
| 2036 |
|
|
memset(&lp->pktStats, 0, sizeof(lp->pktStats));
|
| 2037 |
|
|
spin_unlock_irqrestore(&lp->lock, flags);
|
| 2038 |
|
|
break;
|
| 2039 |
|
|
|
| 2040 |
|
|
case DEPCA_GET_REG: /* Get the DEPCA Registers */
|
| 2041 |
|
|
i = 0;
|
| 2042 |
|
|
tmp.sval[i++] = inw(DEPCA_NICSR);
|
| 2043 |
|
|
outw(CSR0, DEPCA_ADDR); /* status register */
|
| 2044 |
|
|
tmp.sval[i++] = inw(DEPCA_DATA);
|
| 2045 |
|
|
memcpy(&tmp.sval[i], &lp->init_block, sizeof(struct depca_init));
|
| 2046 |
|
|
ioc->len = i + sizeof(struct depca_init);
|
| 2047 |
|
|
if (copy_to_user(ioc->data, tmp.addr, ioc->len))
|
| 2048 |
|
|
return -EFAULT;
|
| 2049 |
|
|
break;
|
| 2050 |
|
|
|
| 2051 |
|
|
default:
|
| 2052 |
|
|
return -EOPNOTSUPP;
|
| 2053 |
|
|
}
|
| 2054 |
|
|
|
| 2055 |
|
|
return status;
|
| 2056 |
|
|
}
|
| 2057 |
|
|
|
| 2058 |
|
|
static int __init depca_module_init (void)
|
| 2059 |
|
|
{
|
| 2060 |
|
|
int err = 0;
|
| 2061 |
|
|
|
| 2062 |
|
|
#ifdef CONFIG_MCA
|
| 2063 |
|
|
err = mca_register_driver (&depca_mca_driver);
|
| 2064 |
|
|
#endif
|
| 2065 |
|
|
#ifdef CONFIG_EISA
|
| 2066 |
|
|
err |= eisa_driver_register (&depca_eisa_driver);
|
| 2067 |
|
|
#endif
|
| 2068 |
|
|
err |= platform_driver_register (&depca_isa_driver);
|
| 2069 |
|
|
depca_platform_probe ();
|
| 2070 |
|
|
|
| 2071 |
|
|
return err;
|
| 2072 |
|
|
}
|
| 2073 |
|
|
|
| 2074 |
|
|
static void __exit depca_module_exit (void)
|
| 2075 |
|
|
{
|
| 2076 |
|
|
int i;
|
| 2077 |
|
|
#ifdef CONFIG_MCA
|
| 2078 |
|
|
mca_unregister_driver (&depca_mca_driver);
|
| 2079 |
|
|
#endif
|
| 2080 |
|
|
#ifdef CONFIG_EISA
|
| 2081 |
|
|
eisa_driver_unregister (&depca_eisa_driver);
|
| 2082 |
|
|
#endif
|
| 2083 |
|
|
platform_driver_unregister (&depca_isa_driver);
|
| 2084 |
|
|
|
| 2085 |
|
|
for (i = 0; depca_io_ports[i].iobase; i++) {
|
| 2086 |
|
|
if (depca_io_ports[i].device) {
|
| 2087 |
|
|
depca_io_ports[i].device->dev.platform_data = NULL;
|
| 2088 |
|
|
platform_device_unregister (depca_io_ports[i].device);
|
| 2089 |
|
|
depca_io_ports[i].device = NULL;
|
| 2090 |
|
|
}
|
| 2091 |
|
|
}
|
| 2092 |
|
|
}
|
| 2093 |
|
|
|
| 2094 |
|
|
module_init (depca_module_init);
|
| 2095 |
|
|
module_exit (depca_module_exit);
|
