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Date:      Sat, 29 Jul 2000 14:55:45 +0100
From:      Brian Candler <B.Candler@pobox.com>
To:        freebsd-mobile@freebsd.org
Subject:   Ricoh RL5C475 PCI-PCMCIA adaptor and interrupts
Message-ID:  <20000729145545.A856@linnet.org>

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(Posted on -mobile because it's a pccard problem, even though this is a
desktop machine :-)

I have got a Melco Airconnect card (basically a rebadged Wavelan) and am
trying to get it to work with the PCI adaptor which came with it, which has
a single pccard slot. I've tried both 4.0-20000718-STABLE and
5.0-20000728-CURRENT snapshots with the same results.

The PCI card is detected, and so is the pccard, but it gives timeout errors
as soon as it is configured.

[dmesg]
pcic-pci0: <Ricoh RL5C475 PCI-CardBus Bridge> irq 11 at device 8.0 on pci0
...
pcic0: <Intel i82365> at port 0x3e0 iomem 0xd0000 on isa0
pcic0: Polling mode
...
pccardd[47]: Card "MELCO"("WLI-PCM-L11") [Version 01.01] [] matched "MELCO"
("WLI-PCM-L11") [(null)] [(null)]
wi0: <WaveLAN/IEEE 802.11> at port 0x200-0x23f irq 11 slot 0 on pccard0
wi0: Ethernet address: 00:02:2d:00:40:59
pccardd[47]: wi0: MELCO (WLI-PCM-L11) inserted.
pccardd[47]: pccardd started

# wicontrol -i wi0 -f 3
# ifconfig wi0 10.0.0.5 netmask 255.255.255.0
wi0: tx buffer allocation failed
wi0: xmit failed
wi0: device timeout
wi0: tx buffer allocation failed
wi0: xmit failed
wi0: device timeout
wi0: tx buffer allocation failed


Now, I was having similar problems with Linux too, which turned out to be
interrupt related (I could transmit one packet and then it gave timeouts). I
have now got this to work though, by using the latest 3.1.19 version of
pcmcia-cs, and configuring it with

PCIC_OPTS="irq_mode=0 irq_list=11"

Apparently the Ricoh chip has three IRQ modes (PCI, ISA, serial) and you
have to explicitly enable PCI mode.

[Aside: Under FreeBSD, I've also managed to lock up my machine several times
when inserting cards or restarting pccardd :-( I get a 'pccard inserted'
message but from that point on virtual console 1 anything I type is just
echoed. I can swap to the other VCs, but they don't even echo what I type.]

Anyway, I'm not very familiar with the FreeBSD bus model, so if you've got
any suggestions for things I can try to narrow down the problem, please mail
them to me. The output of Linux's "lspci" command is below. Notice that
Linux doesn't correctly identify that the card is on IRQ 11 (so I had to
configure it thus in PCIC_OPTS).

Thanks,

Brian Candler.

# lspci -vvxx
00:08.0 CardBus bridge: Ricoh Co Ltd RL5c475 (rev 80)
	Subsystem: Melco Inc: Unknown device 030a
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
	Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
	Latency: 32 set
	Interrupt: pin A routed to IRQ 0
                                   ^^^^^
	Region 0: Memory at <ignored> (32-bit, non-prefetchable)
	Bus: primary=00, secondary=20, subordinate=22, sec-latency=176
	I/O window 0: 00000000-00000003
	I/O window 1: 00000000-00000003
	BridgeCtl: Parity- SERR- ISA- VGA- MAbort- >Reset- 16bInt+ PostWrite+
	16-bit legacy interface ports at 0001
00: 80 11 75 04 07 00 10 02 80 00 07 06 00 20 02 00
10: 00 00 00 68 dc 00 00 02 00 20 22 b0 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
30: 00 00 00 00 00 00 00 00 00 00 00 00 0b 01 80 07
                                        ^^
40: 54 11 0a 03 01 00 00 00 00 00 00 00 00 00 00 00
50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00


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