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Diffstat (limited to 'kernel/Documentation/isdn/README.hfc-pci')
| -rw-r--r-- | kernel/Documentation/isdn/README.hfc-pci | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/kernel/Documentation/isdn/README.hfc-pci b/kernel/Documentation/isdn/README.hfc-pci new file mode 100644 index 000000000..e8a4ef022 --- /dev/null +++ b/kernel/Documentation/isdn/README.hfc-pci @@ -0,0 +1,41 @@ +The driver for the HFC-PCI and HFC-PCI-A chips from CCD may be used +for many OEM cards using this chips. +Additionally the driver has a special feature which makes it possible +to read the echo-channel of the isdn bus. So all frames in both directions +may be logged. +When the echo logging feature is used the number of available B-channels +for a HFC-PCI card is reduced to 1. Of course this is only relevant to +the card, not to the isdn line. +To activate the echo mode the following ioctls must be entered: + +hisaxctrl <driver/cardname> 10 1 + +This reduces the available channels to 1. There must not be open connections +through this card when entering the command. +And then: + +hisaxctrl <driver/cardname> 12 1 + +This enables the echo mode. If Hex logging is activated the isdnctrlx +devices show a output with a line beginning of HEX: for the providers +exchange and ECHO: for isdn devices sending to the provider. + +If more than one HFC-PCI cards are installed, a specific card may be selected +at the hisax module load command line. Supply the load command with the desired +IO-address of the desired card. +Example: +There tree cards installed in your machine at IO-base addresses 0xd000, 0xd400 +and 0xdc00 +If you want to use the card at 0xd400 standalone you should supply the insmod +or depmod with type=35 io=0xd400. +If you want to use all three cards, but the order needs to be at 0xdc00,0xd400, +0xd000 you may give the parameters type=35,35,35 io=0xdc00,0xd400,0xd00 +Then the desired card will be the initialised in the desired order. +If the io parameter is used the io addresses of all used cards should be +supplied else the parameter is assumed 0 and a auto search for a free card is +invoked which may not give the wanted result. + +Comments and reports to werner@isdn4linux.de or werner@isdn-development.de + + + |