Messages in this thread | | | Date | Tue, 05 Feb 2002 11:13:27 +0100 | From | Alessandro Suardi <> | Subject | Re: modular floppy broken in 2.5.3 |
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Gunther Mayer wrote: > > Alan Cox wrote: > > > > It turns out this is due to the new PnPBIOS kernel config option: > > > > > > [asuardi@dolphin asuardi]$ grep PnPBIOS /proc/ioports > > > 03f0-03f1 : PnPBIOS PNP0c01 > > > 0600-067f : PnPBIOS PNP0c01 > > > 0680-06ff : PnPBIOS PNP0c01 > > > 0800-083f : PnPBIOS PNP0c01 > > > 0840-084f : PnPBIOS PNP0c01 > > > 0880-088f : PnPBIOS PNP0c01 > > > f400-f4fe : PnPBIOS PNP0c01 > > > > > > But since modular floppy was working before without setting any > > > ioport parameter I'm not entirely sure this is a "feature". > > > > Its a mix of fp and pnpbios things that need untangling. PnPBIOS should > > register the resource as not in use, floppy should allocate the right > > PNPNIOS is right to reserve PNP0C01 as "used". Else there will be hangs > when drivers poke in io space (e.g. laptops tend to have special > hardware which doesn't like to be touched). > > PNPBIOS should not reserve 3f0/3f1 as a _workaround_ for this BIOS bug. > > The BIOS probably wants to tell you there is a superio chip at 0x3f0 > (try http://home.t-online.de/home/gunther.mayer/lssuperio-0.63.tar.gz).
And here it goes...
lssuperio V0.63 (EXPERIMENTAL)
Winbond Super-IO detection, now testing ports 3F0,370,250,4E,2E ... SMSC Super-IO detection, now testing Ports 2F0, 370, 2E, 4E ... SMSC chip at EFER=0x3f0 key=0x55 id=09 rev=08 oldid=0x00 oldrev=0x00 LDN 0( FDC): io=0x3f0, irq= 6, dma= 1 LDN 1(reserved): Disabled. LDN 2(reserved): Disabled. LDN 3( LPT): io=0x378, irq= 7, dma=No LDN 4( UART_A): io=0x3f8, irq= 4, dma=No LDN 5( UART_B): io=0x3e8, io2=0x290, irq= 4, dma= 3 LDN 6(reserved): io=0x0, irq= 8, dma=No LDN 7( KBC): io=0x0, irq= 1, irq2=12, dma=No LDN 8(reserved): Disabled. LDN 9(Gameport): Disabled. LDN a( PME): Disabled. LDN b( MPU-401): Disabled. LPT mode=ECP FIFO thresh.=7 SMSC chip type 37n958 National Semiconductor Super-IO detection,now testing port 2E,4E,15C,26E,398 ...ITE Super-IO detection testing ports 2E,4E,279,370/371 ... ALI Super-IO detection testing ports 370,398,3F0 ... Intel Super-IO detection testing ports 26E, 398 ...
--alessandro
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