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Date:   Sun, 01 Oct 2023 14:15:16 +0900
From:   "Takashi Sakamoto" <o-takashi@sakamocchi.jp>
To:     "Jiri Slaby" <jirislaby@kernel.org>, linux-kernel@vger.kernel.org
Subject: Re: [GIT PULL] firewire updates for 6.5-rc1
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Hi Jiri,

Just now I installed openSUSE Tumbleweed, however I found no issue on my 1394 OHCI
hardware. I would like to ask your current opinion for the issue?

~> uname -r
6.5.4-1-default

~> cat /etc/os-release 
NAME="openSUSE Tumbleweed"
# VERSION="20230929"
ID="opensuse-tumbleweed"
ID_LIKE="opensuse suse"
VERSION_ID="20230929"
PRETTY_NAME="openSUSE Tumbleweed"
ANSI_COLOR="0;32"
CPE_NAME="cpe:/o:opensuse:tumbleweed:20230929"
BUG_REPORT_URL="https://bugzilla.opensuse.org"
SUPPORT_URL="https://bugs.opensuse.org"
HOME_URL="https://www.opensuse.org"
DOCUMENTATION_URL="https://en.opensuse.org/Portal:Tumbleweed"
LOGO="distributor-logo-Tumbleweed"

->sudo lspci -v
...
01:00.0 PCI bridge: Texas Instruments XIO2213A/B/XIO2221 PCI Express to PCI Bridge [Cheetah Express] (rev 01) (prog-if 00 [Normal decode])
        Subsystem: Device 3412:7856
        Flags: bus master, fast devsel, latency 0, IOMMU group 8
        Memory at fce00000 (32-bit, non-prefetchable) [size=4K]
        Bus: primary=01, secondary=02, subordinate=02, sec-latency=32
        I/O behind bridge: [disabled] [32-bit]
        Memory behind bridge: fcd00000-fcdfffff [size=1M] [32-bit]
        Prefetchable memory behind bridge: [disabled] [64-bit]
        Capabilities: [50] Power Management version 3
        Capabilities: [60] MSI: Enable- Count=1/16 Maskable- 64bit+
        Capabilities: [80] Subsystem: Device 3412:7856
        Capabilities: [90] Express PCI-Express to PCI/PCI-X Bridge, MSI 00
        Capabilities: [100] Advanced Error Reporting

02:00.0 FireWire (IEEE 1394): Texas Instruments XIO2213A/B/XIO2221 IEEE-1394b OHCI Controller [Cheetah Express] (rev 01) (prog-if 10 [OHCI])
        Subsystem: Device 3412:7856
        Flags: bus master, 66MHz, medium devsel, latency 32, IRQ 39, IOMMU group 8
        Memory at fcd04000 (32-bit, non-prefetchable) [size=2K]
        Memory at fcd00000 (32-bit, non-prefetchable) [size=16K]
        Capabilities: [44] Power Management version 3
        Kernel driver in use: firewire_ohci
        Kernel modules: firewire_ohci
...

$ udevadm info -e
...
P: /devices/pci0000:00/0000:00:01.1/0000:01:00.0
M: 0000:01:00.0
R: 0
U: pci
E: DEVPATH=/devices/pci0000:00/0000:00:01.1/0000:01:00.0
E: SUBSYSTEM=pci
E: PCI_CLASS=60400
E: PCI_ID=104C:823E
E: PCI_SUBSYS_ID=3412:7856
E: PCI_SLOT_NAME=0000:01:00.0
E: MODALIAS=pci:v0000104Cd0000823Esv00003412sd00007856bc06sc04i00
E: USEC_INITIALIZED=11023840
E: ID_PCI_CLASS_FROM_DATABASE=Bridge
E: ID_PCI_SUBCLASS_FROM_DATABASE=PCI bridge
E: ID_PCI_INTERFACE_FROM_DATABASE=Normal decode
E: ID_VENDOR_FROM_DATABASE=Texas Instruments
E: ID_MODEL_FROM_DATABASE=XIO2213A/B/XIO2221 PCI Express to PCI Bridge [Cheetah Express]
E: ID_PATH=pci-0000:01:00.0
E: ID_PATH_TAG=pci-0000_01_00_0

P: /devices/pci0000:00/0000:00:01.1/0000:01:00.0/0000:02:00.0
M: 0000:02:00.0
R: 0
U: pci
V: firewire_ohci
E: DEVPATH=/devices/pci0000:00/0000:00:01.1/0000:01:00.0/0000:02:00.0
E: SUBSYSTEM=pci
E: DRIVER=firewire_ohci
E: PCI_CLASS=C0010
E: PCI_ID=104C:823F
E: PCI_SUBSYS_ID=3412:7856
E: PCI_SLOT_NAME=0000:02:00.0
E: MODALIAS=pci:v0000104Cd0000823Fsv00003412sd00007856bc0Csc00i10
E: USEC_INITIALIZED=11023930
E: ID_PCI_CLASS_FROM_DATABASE=Serial bus controller
E: ID_PCI_SUBCLASS_FROM_DATABASE=FireWire (IEEE 1394)
E: ID_PCI_INTERFACE_FROM_DATABASE=OHCI
E: ID_VENDOR_FROM_DATABASE=Texas Instruments
E: ID_MODEL_FROM_DATABASE=XIO2213A/B/XIO2221 IEEE-1394b OHCI Controller [Cheetah Express]
E: ID_PATH=pci-0000:02:00.0
E: ID_PATH_TAG=pci-0000_02_00_0

P: /devices/pci0000:00/0000:00:01.1/0000:01:00.0/0000:02:00.0/fw0
M: fw0
R: 0
U: firewire
D: c 244:0
N: fw0
L: 0
E: DEVPATH=/devices/pci0000:00/0000:00:01.1/0000:01:00.0/0000:02:00.0/fw0
E: SUBSYSTEM=firewire
E: DEVNAME=/dev/fw0
E: MAJOR=244
E: MINOR=0
...

When I plugged in my sound device (Tascam Fireone) and load ALSA OXFW driver, it works as expected. It means that both 1394 Asynchronous/Isochronous communications are established as expected.


Regards

Takashi Sakamoto