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Date: Mon, 25 Sep 2000 13:54:20 +0900
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Subject: [FreeBSD-users-jp 55513] Can't use DMA transfer mode with ata driver
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$B=i$a$^$7$F!$@nED$H?=$7$^$9!%(B
$B=5Kv$K:#$^$G(B note PC $B>e$GF0$+$7$F$-$?(B 3.3-RELEASE $B$r(B 4.1-RELEASE$B$K$"(B
$B$2$^$7$?!%2?5$$J$/(B dmesg $B$N=PNO$r8+$F$$$k$H!$$I$&$b(BDMA$B%b!<%I$G$J$/(BPIO
$B%b!<%I$G%O!<%I%G%#%9%/$K%"%/%;%9$7$F$$$k$_$?$$$G$9!%(B3.3-RELEASE$B$G$O(B
wdc $B$K(B flags $B$r;XDj$7$F(BDMA$B%b!<%I$GF0$+$;$F$$$?$H;W$$$^$9(B(4.1$B$r>e=q$-(B
$B%$%s%9%H!<%k$7$F$7$^$C$?$N$G:#$H$J$C$F$O3N>Z$,$"$j$^$;$s$,(B)$B!%(Bsysctl
$B$b<B9T$7$F$_$^$7$?$,JQ2=$O$"$j$^$;$s$G$7$?!%(B
$B$I$J$?$+(Bata $B$G(BDMA$B%b!<%I$r;H$&J}K!$r65$($F$$$?$@$1$J$$$G$7$g$&$+!)(B

$B0J2<$,8=:_$N>u67$G$9!%(B

H/W: IBM ThinkPad535E

o dmesg $B$N=PNO(B($B4X78$N$"$k$H;W$o$l$k$H$3$m$@$1$rH4?h$7$^$7$?(B)
pcib0: <Host to PCI bridge> on motherboard
pci0: <PCI bus> on pcib0
isab0: <Intel 82371FB PCI to ISA bridge> at device 1.0 on pci0
isa0: <ISA bus> on isab0
ata0 at port 0x1f0-0x1f7,0x3f6 irq 14 on isa0
ad0: 4645MB <IBM-DBCA-204860> [10068/15/63] at ata0-master using BIOSPIO
                                                                /^^^^^^^
                                                             $B!J$3$3!K(B
o sysctl $B$N7k2L(B
# sysctl hw.atamodes
hw.atamodes: pio,---,pio,---,
# sysctl -w hw.atamodes=dma,---,pio,---
hw.atamodes: pio,---,pio,---, -> pio,---,pio,---,

o $B5?LdE@(B
$B$[$+$N(BPC$B$N(Bdmesg$B$H8+Hf$Y$F$_$k$H(Bata0$B$,(BISA$B%P%9$K$V$i2<$,$C$F$$$k$N$,JQ(B
$B$G$9!%(BIntel 82371FB$B$G$9$+$i!$(B

-----(Intel 82371FB$B$r;}$D$[$+$N(BPC$B$h$j(B)
atapci0: <Intel PIIX ATA controller> port 0xfcd0-0xfcdf at device 15.1 on pci0
ata0: at 0x1f0 irq 14 on atapci0
-----

$B$H$+$J$C$F!$(Bpci0 -> atapci0 -> ata0 -> ad0 $B$H$J$k$N$,@5$7$$$N$G$O$H(B
$B;W$&$N$G$9$,!%;d$NM}2r$O$I$3$+4V0c$C$F$$$k$G$7$g$&$+!)(B
$B$A$J$_$K!$(B

#device         ata0    at isa? port IO_WD1 irq 14
#device         ata1    at isa? port IO_WD2 irq 15
device          ata

$B$H>e(B2$B9T$r%3%a%s%H%"%&%H$7$?%+!<%M%k$H:n$k$H(B ad0 $B$,8+$D$1$i$l$J$/$F%V(B
$B!<%H$G$-$^$;$s$G$7$?(B($B:#$N4D6-$G$OEv$?$jA0$+(B)

$B0J>eD9$/$J$j$^$7$?$,!$$h$m$7$/$*4j$$$7$^$9!%(B
