Re: [PATCH] hisax/sportster dependency error

[Kai Germaschewski]

On Sat, 6 Jan 2001, Daniel Stodden wrote:

> --- linux-2.4/drivers/isdn/hisax/Makefile.orig  Sat Jan  6 02:47:31 2001
> +++ linux-2.4/drivers/isdn/hisax/Makefile       Sat Jan  6 02:21:22 2001
> @@ -34,7 +34,7 @@
>  hisax-objs-$(CONFIG_HISAX_ASUSCOM) += asuscom.o isac.o arcofi.o hscx.o
>  hisax-objs-$(CONFIG_HISAX_TELEINT) += teleint.o isac.o arcofi.o hfc_2bs0.o
>  hisax-objs-$(CONFIG_HISAX_SEDLBAUER) += sedlbauer.o isac.o arcofi.o hscx.o isar.o
> -hisax-objs-$(CONFIG_HISAX_SPORTSTER) += sportster.o isac.o arcofi.o hfc_2bs0.o
> +hisax-objs-$(CONFIG_HISAX_SPORTSTER) += sportster.o isac.o arcofi.o hfc_2bs0.o hscx.o
>  hisax-objs-$(CONFIG_HISAX_MIC) += mic.o isac.o arcofi.o hfc_2bs0.o
>  hisax-objs-$(CONFIG_HISAX_NETJET) += nj_s.o netjet.o isac.o arcofi.o
>  hisax-objs-$(CONFIG_HISAX_NETJET_U) += nj_u.o netjet.o icc.o

Thanks, I'll put that into the next ISDN update.

> question: something which i missed to ask for about year now:
>
> bitch[3]:~$ cat /proc/ioports
> 0000-001f : dma1
> 0020-003f : pic1
> 0040-005f : timer
> 0060-006f : keyboard
> 0070-007f : rtc
> 0080-008f : dma page reg
> 00a0-00bf : pic2
> 00c0-00df : dma2
> 00f0-00ff : fpu
> 0170-0177 : ide1
> 0220-022f : soundblaster
> 0268-026f : sportster
> 02f8-02ff : serial(set)
> 0330-0333 : MPU-401 UART
> 0376-0376 : ide1
> 0378-037a : parport0
> 03c0-03df : vga+
>   03c0-03df : matrox
> 03f8-03ff : serial(set)
> 0668-066f : sportster
> 0a68-0a6f : sportster
> 0cf8-0cff : PCI conf1
> 0e68-0e6f : sportster
> 1268-126f : sportster
> [...]
>
> could anyone explain this behaviour?
>
> the card is at io=0x268 irq=7
>
> according to sportster.c:get_io_range, this appears to be perfectly
> intentional, request_regioning 64x8 byte from 0x268 in 1024byte-steps.

AFAIK, this is because the hardware is stupid and does decode the higher
address lines. Therefore, the IO ports are mirrored every 1024 bytes and
should be reserved to avoid potential conflicts with other devices.

--Kai