Hey, thanks. That's very helpful.
>exca_readb c6807e8 3 40
>exca_writeb c6807e8 3 50
>
>The repeating block (read byte, write byte, 3xwrite word) seems to be the
>end of yenta_clear_maps() which is the last thing done by yenta_init() -
>so I suspect that the yenta_socket() stuff is loading correctly. The last
>two operations seem to be enabling interrupts, and then a short moment
>later, the machine hangs. I suspect that the last call is
>yenta_set_socket() because that is the only explicit exca_writeb() to
>I365_INTCTL.
No, it's "int ti_intctl()", and it's the part that enables PCI
interrupts for the TI yenta controllers. You missed it because it's
hidden in the TI-specific stuff in ti113x.h.
Can you do two things for me?
1) your debug output seems to imply that the thing still has
I365_PC_RESET set. In ti_initctl(), how about making the
new = reg & ~I365_INTR_ENA;
be a
new = reg & ~(I365_INTR_ENA | I365_PC_RESET);
2) do a "lspci -vvvxx" as root, and also do a "dump_pirq" and send it
all by email to me..
Also, does it matter if you have anything plugged in or not?
Linus
-----
#!/usr/bin/perl
#
# dump_pirq 1.20 2000/12/19 19:19:52
#
# A utility to parse the BIOS PCI IRQ Routing Table
#
# Copyright (C) 2000 David A. Hinds -- dahinds@users.sourceforge.net
#
#-----------------------------------------------------------------------
sub dev {
my($devfn) = @_;
sprintf "%02x.%d", ($devfn>>3), ($devfn&7);
}
sub print_mask
{
my($mask) = @_;
printf "0x%04x [", $mask;
for (my $i = 0; $i < 16; $i++) {
next if (!($mask & (1<<$i)));
$mask &= ~(1<<$i);
print (($mask) ? "$i," : "$i");
}
print "]\n";
}
sub row {
my($tag, $link, $mask) = @_;
if ($link != 0) {
printf " INT$tag: link 0x%02x, irq mask ", $link;
print_mask($mask);
}
}
sub class_of
{
my($slot) = @_;
open(IN, "/sbin/lspci -s $slot |");
$_ = <IN>;
close(IN);
return (/^....... ([^:]+):/) ? $1 : "";
}
sub parse_pirq
{
my($buf) = @_;
my($p) = index($buf, "\$PIR");
my($minor,$major,$size,$rbus,$rdev,$mask,$cvd,$mini) =
unpack "CCSCCSLL", substr($buf, $p+4, 16);
printf "Interrupt routing table found at address 0xf%04x:\n", $p;
printf " Version $major.$minor, size 0x%04x\n", $size;
printf " Interrupt router is device %02x:%s\n", $rbus, dev($rdev);
print " PCI exclusive interrupt mask: ";
print_mask($mask);
if ($cvd) {
printf(" Compatible router: vendor 0x%04x device 0x%04x\n",
($cvd & 0xffff), ($cvd >> 16));
}
$ofs = 32;
while ($ofs < $size) {
# Parse a table entry describing a single PCI device
($bus, $devfn, $la, $ma, $lb, $mb, $lc, $mc, $ld, $md, $slot) =
unpack "CCCSCSCSCSC", substr($buf, $p+$ofs, 15);
$s = sprintf "%02x:%s", $bus, dev($devfn);
printf "\nDevice $s (slot $slot): %s\n", class_of($s);
row("A", $la, $ma); row("B", $lb, $mb);
row("C", $lc, $mc); row("D", $ld, $md);
push(@{$dev{$la}}, $s . "1");
push(@{$dev{$lb}}, $s . "2");
push(@{$dev{$lc}}, $s . "3");
push(@{$dev{$ld}}, $s . "4");
$ofs += 16;
}
return ($rbus, $rdev, $cvd);
}
#-----------------------------------------------------------------------
# The link values in the interrupt routing table are implementation
# dependent. Here, we'll try to interpret the link values for some
# known PCI bridge types.
%pIIx = (0x122e8086, "82371FB PIIX",
0x70008086, "82371SB PIIX3",
0x71108086, "82371AB PIIX4/PIIX4E",
0x71988086, "82443MX",
0x24108086, "82801AA ICH",
0x24208086, "82801AB ICH0",
0x24408086, "82801BA ICH2",
0x244c8086, "82801BAM ICH2-M");
%via = (0x05861106, "82C586",
0x05961106, "82C596",
0x06861106, "82C686");
%opti = (0xc7001045, "82C700");
%pico = (0x00021066, "PT86C523");
%ali = (0x153310b9, "Aladdin M1533");
%sis = (0x04961039, "85C496/497",
0x00081039, "85C503");
%cyrix = (0x01001078, "5530");
%all_routers = (%pIIx, %via, %opti, %pico, %ali, %sis, %cyrix);
sub outb
{
my($data,$port) = @_;
open(IO, ">/dev/port") || die;
sysseek(IO, $port, 0) || die;
my $x = pack "C", $data;
syswrite(IO, $x, 1);
close(IO);
}
sub inb
{
my($port) = @_;
my($data);
open(IO, "/dev/port") || die;
sysseek(IO, $port, 0) || die;
sysread(IO, $data, 1);
close(IO);
return unpack "C", $data;
}
sub dump_router
{
my($rbus, $rdev, $cvd) = @_;
my($buf, @p, $i, $irq);
printf "\nInterrupt router at %02x:%s: ", $rbus, dev($rdev);
$rf = sprintf "/proc/bus/pci/%02x/%s", $rbus, dev($rdev);
open(IN, $rf);
if (sysread(IN, $buf, 0x100) != 0x100) {
print "\nCould not read router info from $rf.\n";
exit;
}
close(IN);
my $vd = unpack "L", substr($buf, 0, 4);
if ((defined $pIIx{$vd}) || (defined $pIIx{$cvd})) {
$name = (defined $pIIx{$vd}) ? $pIIx{$vd} : $pIIx{$cvd};
printf "Intel $name PCI-to-ISA bridge\n";
@p = unpack "CCCCC", substr($buf, 0x60, 5);
for ($i = 0; $i < 4; $i++) {
printf " PIRQ%d (link 0x%02x): ", $i+1, 0x60+$i;
print (($p[$i] < 16) ? "irq $p[$i]\n" : "unrouted\n");
}
print " Serial IRQ:";
print (($p[4] & 0x80) ? " [enabled]" : " [disabled]");
print (($p[4] & 0x40) ? " [continuous]" : " [quiet]");
print " [frame=", (($p[4] >> 2) & 15) + 17, "]";
print " [pulse=", (($p[4] & 3) * 4 + 4), "]\n";
print " Level mask: "; print_mask((inb(0x4d1)<<8) + inb(0x4d0));
} elsif ((defined $via{$vd}) || (defined $via{$cvd})) {
$name = (defined $via{$vd}) ? $via{$vd} : $via{$cvd};
printf "VIA $name PCI-to-ISA bridge\n";
$p = unpack "L", substr($buf, 0x55, 4);
%tag = (1, "A", 2, "B", 3, "C", 5, "D");
foreach $link (1,2,3,5) {
$irq = ($p >> ($link * 4)) & 15;
print " PIRQ$tag{$link} (link 0x0$link): ";
print ($irq ? "irq $irq\n" : "unrouted\n");
}
} elsif ((defined $opti{$vd}) || (defined $opti{$cvd})) {
$name = (defined $opti{$vd}) ? $opti{$vd} : $opti{$cvd};
printf "OPTi $name PCI-to-ISA bridge\n";
$p = unpack "S", substr($buf, 0xb8, 2);
for ($i = 0; $i < 4; $i++) {
$irq = ($p >> ($i * 4)) & 15;
printf " PCIRQ$i (link 0x%02x): ", ($i<<4)+0x02;
print ($irq ? "irq $irq\n" : "unrouted\n");
}
} elsif ((defined $pico{$vd} || defined $pico{$cvd})) {
$name = (defined $pico{$vd}) ? $pico{$vd} : $pico{$cvd};
printf "PicoPower $name PCI-to-ISA bridge\n";
outb(0x10, 0x24); $p = inb(0x26);
outb(0x11, 0x24); $p += inb(0x26)<<8;
@tag = ("A", "B", "C", "D");
for ($i = 0; $i < 4; $i++) {
$irq = ($p >> ($i * 4)) & 15;
print " INT$tag[$i] (link 0x0", $i+1, "): ";
print ($irq ? "irq $irq\n" : "unrouted\n");
}
} elsif ((defined $ali{$vd} || defined $ali{$cvd})) {
$name = (defined $ali{$vd}) ? $ali{$vd} : $ali{$cvd};
printf "AcerLabs $name PCI-to-ISA bridge\n";
$p = unpack "L", substr($buf, 0x48, 4);
# This mapping is insane!
@map = (0, 9, 3, 10, 4, 5, 7, 6, 1, 11, 0, 12, 0, 14, 0, 15);
for ($i = 0; $i < 8; $i++) {
$irq = ($p >> ($i*4)) & 15;
print " INT", $i+1, " (link ", $i+1, "): ";
print ($map[$irq] ? "irq $map[$irq]\n" : "unrouted\n");
}
$s = unpack "C", substr($buf, 0x70, 1);
print " Serial IRQ:";
print (($s & 0x80) ? " [enabled]" : " [disabled]");
print (($s & 0x40) ? " [continuous]" : " [quiet]");
print " [frame=", (($s >> 2) & 15) + 17, "]";
print " [pulse=", (($s & 3) * 4 + 4), "]\n";
} elsif ((defined $sis{$vd}) || (defined $sis{$cvd})) {
$name = (defined $sis{$vd}) ? $sis{$vd} : $sis{$cvd};
printf "SiS $name PCI-to-ISA bridge\n";
$base = ($name eq "85C496/497") ? 0xc0 : 0x41;
@p = unpack "CCCC", substr($buf, $base, 4);
@tag = ("A", "B", "C", "D");
for ($i = 0; $i < 4; $i++) {
$irq = ($p[$i] & 0x80) ? 0 : ($p[$i] & 0x0f);
printf " INT$tag[$i] (link 0x%02x): ", $i+$base;
print ($irq ? "irq $irq\n" : "unrouted\n");
}
} elsif ((defined $cyrix{$vd}) || (defined $cyrix{$cvd})) {
$name = (defined $cyrix{$vd}) ? $cyrix{$vd} : $cyrix{$cvd};
printf "CYRIX $name PCI-to-ISA bridge\n";
$p = unpack "S", substr($buf, 0x5c, 2);
%tag = ("A", "B", "C", "D");
for ($i = 0; $i < 4; $i++) {
$irq = ($p >> ($i * 4)) & 15;
printf " PIRQ$tag{$i} (link 0x%02x): ", $i+1;
print ($irq ? "irq $irq\n" : "unrouted\n");
}
} else {
printf("unknown vendor 0x%04x device 0x%04x\n",
($vd & 0xffff), ($vd >> 16));
foreach $k (sort keys %dev) {
next if ($k == 0);
printf " PIRQ? (link 0x%02x): ", $k;
$irq = 0;
foreach $d (@{$dev{$k}}) {
$d =~ /(..):(..)\..(.)/;
($bus,$dev,$pin) = ($1,$2,$3);
for ($fn = 0; $fn < 8; $fn++) {
open(IN, "/proc/bus/pci/$bus/$dev.$fn") || last;
sysread(IN, $buf, 0x100);
close(IN);
($i,$p) = unpack "CC", substr($buf, 0x3c, 2);
$irq = $i if (($p == $pin) && $i && ($i != 255));
}
}
print ($irq ? "irq $irq\n" : "unrouted?\n");
}
}
}
#-----------------------------------------------------------------------
# Grab the BIOS from 0xf0000-0xfffff
open(IN, "/dev/mem") || die "cannot open /dev/mem\n";
sysseek(IN, 0xf0000, 0) || die;
die if (sysread(IN, $buf, 0x10000) != 0x10000);
close(IN);
if (index($buf, "\$PIR") >= 0) {
# Dump the PIRQ table, and the router information
($rbus, $rdev, $cvd) = parse_pirq($buf);
dump_router($rbus, $rdev, $cvd);
} else {
# Scan for any interrupt router device we recognize
print "No PCI interrupt routing table was found.\n";
open(DEV, "/proc/bus/pci/devices");
while (<DEV>) {
($rbus,$rdev,$vd) = /^(..)(..)\s+(........)/;
$rbus = hex($rbus); $rdev = hex($rdev); $vd = hex($vd);
$vd = (($vd & 0xffff0000) >> 16) | (($vd & 0xffff) << 16);
if (defined $all_routers{$vd}) {
dump_router($rbus, $rdev, $vd);
$nr++;
}
}
print "\nNo known PCI interrupt routers were found.\n" if (!$nr);
}
-
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