SEO

According to a 3.6 dmesg, this motherboard uses:
pciide0 at pci0 dev 15 function 0 "VIA VT82C571 IDE" rev 0x06

Upon inspection, apparently the MB also has a VT8235, according to:
http://www.biostar-usa.com/mbdetails.asp?model=u8668+d

For some reason this hardware wasn't being detected in pciide.c, in the
apollo_chip_map() function... which in turn was assigning it as regular
DMA, UDMA mode 2.

I made the following change to pciide.c:
--- pciide.c-orig Thu Apr 14 13:26:57 2005
+++ pciide.c Thu Apr 14 13:20:24 2005
@@ -2500,6 +2500,8 @@
sc->sc_wdcdev.UDMA_cap = 6;
break;
case PCI_PRODUCT_VIATECH_VT8235_ISA:
+ /* XXX holy hack batman! */
+ case PCI_PRODUCT_VIATECH_VT82C571:
printf(": ATA133");
sc->sc_wdcdev.UDMA_cap = 6;
break;

I have no idea if this is the correct way to go about doing this, but it
works great.

Here is old bonnie++ output before the fix:

------Sequential Output------ --Sequential Input- --Random-
-Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
300M 17562 22 15708 10 4893 1 14400 20 14998 2 129.8 0
------Sequential Create------ --------Random Create--------
-Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 16163 26 +++++ +++ 6315 5 16925 25 +++++ +++ 18429 22


Here is bonnie++ output after the fix:

------Sequential Output------ --Sequential Input- --Random-
-Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
300M 36191 48 31950 32 6924 1 29278 40 30188 4 139.5 0
------Sequential Create------ --------Random Create--------
-Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 21736 37 +++++ +++ 7187 5 21472 33 +++++ +++ 21704 26


As you can see a huge increase.

Here is a dmesg from another box with the same exact hardware (without
any fixes):

OpenBSD 3.6 (KOZORU) #0: Wed Mar 30 17:17:10 CST 2005
root@pandora.kozoru.com:/usr/src/sys/arch/i386/compile/KOZORU
cpu0: Intel(R) Celeron(R) CPU 2.40GHz ("GenuineIntel" 686-class) 2.41 GHz
cpu0:
FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,P GE,MCA,CMOV,PAT,PSE36,CFLUSH,ACPI,MMX,FXSR,SSE,SSE 2,SS,HTT,TM,SBF,PNI,MWAIT,CNXT-ID
real mem = 1064939520 (1039980K)
avail mem = 965128192 (942508K)
using 4278 buffers containing 53350400 bytes (52100K) of memory
mainbus0 (root)
bios0 at mainbus0: AT/286+(f1) BIOS, date 12/16/04, BIOS32 rev. 0 @ 0xfb350
apm0 at bios0: Power Management spec V1.2
apm0: AC on, battery charge unknown
pcibios0 at bios0: rev 2.1 @ 0xf0000/0xdf44
pcibios0: PCI IRQ Routing Table rev 1.0 @ 0xfdec0/128 (6 entries)
pcibios0: PCI Exclusive IRQs: 10 11 12
pcibios0: PCI Interrupt Router at 000:17:0 ("VIA VT82C596A ISA" rev 0x00)
pcibios0: PCI bus #1 is the last bus
bios0: ROM list: 0xc0000/0xa400 0xcc000/0x1800
cpu0 at mainbus0
pci0 at mainbus0 bus 0: configuration mode 1 (no bios)
pchb0 at pci0 dev 0 function 0 "VIA VT8751 PCI" rev 0x00
ppb0 at pci0 dev 1 function 0 "VIA VT8633 AGP" rev 0x00
pci1 at ppb0 bus 1
vga1 at pci1 dev 0 function 0 "S3 ProSavage DDR" rev 0x00
wsdisplay0 at vga1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
pciide0 at pci0 dev 15 function 0 "VIA VT82C571 IDE" rev 0x06: DMA,
channel 0 configured to compatibility, channel 1 configured to compatibility
wd0 at pciide0 channel 0 drive 0: <SAMSUNG SP0802N>
wd0: 16-sector PIO, LBA48, 76351MB, 156368016 sectors
wd0(pciide0:0:0): using PIO mode 4, DMA mode 2
pciide0: channel 1 disabled (no drives)
pcib0 at pci0 dev 17 function 0 "VIA VT8237 ISA" rev 0x00
vr0 at pci0 dev 18 function 0 "VIA RhineII-2" rev 0x78: irq 11 address
00:11:5b:97:41:67
ukphy0 at vr0 phy 1: Generic IEEE 802.3u media interface
ukphy0: OUI 0x004063, model 0x0032, rev. 8
isa0 at pcib0
isadma0 at isa0
pckbc0 at isa0 port 0x60/5
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pcppi0 at isa0 port 0x61
midi0 at pcppi0: <PC speaker>
sysbeep0 at pcppi0
it0 at isa0 port 0x290/8: IT87
npx0 at isa0 port 0xf0/16: using exception 16
pccom0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
pccom0: console
biomask f7ed netmask ffed ttymask ffef
pctr: user-level cycle counter enabled
dkcsum: wd0 matched BIOS disk 80
root on wd0a
rootdev=0x0 rrootdev=0x300 rawdev=0x302

Any thoughts, feedback, etc is welcome and appriciated...