Messages in this thread |  | | | From | Denis Vlasenko <> | | Subject | Re: Athlon Optimization Problem | | Date | Tue, 5 Feb 2002 10:56:20 -0200 |
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On 5 February 2002 01:22, Serguei Miridonov wrote: > Just as followup... I was trying to find a minimum deviation > from BIOS settigns to make Soyo Dragon Plus stable: > > In KT266A northbridge 1106:3099: > > Reg[0x75] = 0x07; // this was set to 0x01 by BIOS > Reg[0x76] = 0x00; // this was 0x10 > Without this change I had filesystem corruptions during > kernel compilation...
[MODEL]=VT8366 (KT266) Athlon NB [VID]=1106:VIA [DID]=3099:Host to PCI Bridge
[75:7]=Arbitration Mode 0=REQ-based 1=Frame-based (75:6)=CPU Latency Timer read only (75:5)=(same as above) (75:4)=(same as above) [75:3]=(Reserved) [75:2]=PCI Master Bus Time-Out 000=Disable [75:1]=001=1x32 PCICLKs 010=2x32 PCICLKs [75:0]=011=3x32 PCICLKs ... 111=7x32 PCICLKs
Note: other doc I have (for KT266A) says 75.3 is used for PCI Master Bus Time-Out too (thus max timeout is 1111 = 15x32 PCICLKs) [76:7]=I/O Port 22 Enable [76:6]=(Reserved) [76:5]=Master Priority Rotation 0x=every PCI master grant [76:4]=10=after every 2 PCI 11=after every 3 PCI [76:3]=REQn# to REQ4# Mapping 00=REQ4# 01=REQ0# [76:2]=10=REQ1# 11=REQ2# [76:1]=(Reserved) [76:0]=REQ4# Is High Priority 0=disable 1=enable
KT266A doc says: 76.5-4: Master Priority Rotation: 00 disable 01 every PCI master grant 10 every 2 PCI master grant 11 every 3 PCI master grant -- vda - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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