Date: Tue, 28 Mar 2000 21:38:51 +0200 From: "D. Rock" <rock@dead-end.net> To: current@freebsd.org Subject: Resource allocation error in new pnp code Message-ID: <38E10A4B.129A7C27@dead-end.net>
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Hi,
I already mentioned this bug a few months ago but didn't got a reply. Maybe
I'm the only one who is affected by this bug.
I have several PnP cards in my system (see attached output of pnpinfo).
Especially one card requests a resource:
I/O Range 0x100 .. 0x3ff, alignment 0x1, len 0x1
[16-bit addr]
My ISDN controller also requests a resource from this range:
I/O Range 0x100 .. 0x3f0, alignment 0x8, len 0x8
[not 16-bit addr]
Now the following happens:
first card gets assigned:
Mar 28 21:12:00 gate /kernel: unknown10: <EEPROM> at port 0x100 on isa0
and the ISDN card gets assigned:
Mar 28 21:12:00 gate /kernel: isic0: <Sedlbauer WinSpeed> at port 0x101-0x108
irq 11 on isa0
which is wrong since it requests an alignment of 8. The code in
/sys/isa/isa_common.c, which should prevent this is useless, since most
work is done in /sys/kern/subr_rman.c which automatically tries to find
an alternate region, but without honouring any alignment.
Also attached is my (ugly) hack for this problem, but I think the problem
should be addressed elsewhere (in the resource manager), since it may affect
any type of resource allocation which requires different alignment.
--
Daniel
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name="pnpinfo"
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filename="pnpinfo"
Checking for Plug-n-Play devices...
Card assigned CSN #1
Vendor ID AZT3002 (0x02305407), Serial Number 0xffffffff
PnP Version 1.0, Vendor Version 1
Device Description: AZT3002 PnP SOUND DEVICE
Logical Device ID: AZT0500 0x00055407 #0
Device supports I/O Range Check
Device Description: IDE CDROM DISABLED
TAG Start DF
Good Configuration
I/O Range 0x0 .. 0x0, alignment 0x8, len 0x0
[16-bit addr]
I/O Range 0x0 .. 0x0, alignment 0x2, len 0x0
[16-bit addr]
IRQ: IRQ: High true edge sensitive
TAG End DF
Logical Device ID: AZT1004 0x04105407 #1
Device supports I/O Range Check
Device Description: AUDIO
TAG Start DF
Good Configuration
I/O Range 0x220 .. 0x220, alignment 0x10, len 0x10
[16-bit addr]
I/O Range 0x388 .. 0x388, alignment 0x8, len 0x8
[16-bit addr]
I/O Range 0x534 .. 0x534, alignment 0x4, len 0x4
[16-bit addr]
IRQ: 5 IRQ: High true edge sensitive
DMA: channel(s) 1
8-bit, not a bus master, count by byte, , Compatibility mode
DMA: channel(s) 3
8-bit, not a bus master, count by byte, , Compatibility mode
TAG Start DF
I/O Range 0x220 .. 0x240, alignment 0x20, len 0x10
[16-bit addr]
I/O Range 0x388 .. 0x388, alignment 0x8, len 0x8
[16-bit addr]
I/O Range 0x534 .. 0x608, alignment 0xd4, len 0x4
[16-bit addr]
IRQ: 5 9 10 IRQ: High true edge sensitive
DMA: channel(s) 0 1 3
8-bit, not a bus master, count by byte, , Compatibility mode
DMA: channel(s) 0 1 3
8-bit, not a bus master, count by byte, , Compatibility mode
TAG Start DF
I/O Range 0x220 .. 0x240, alignment 0x20, len 0x10
[16-bit addr]
I/O Range 0x388 .. 0x388, alignment 0x8, len 0x8
[16-bit addr]
I/O Range 0xe84 .. 0xf44, alignment 0xc0, len 0x4
[16-bit addr]
IRQ: 5 9 10 IRQ: High true edge sensitive
DMA: channel(s) 0 1 3
8-bit, not a bus master, count by byte, , Compatibility mode
DMA: channel(s) 0 1 3
8-bit, not a bus master, count by byte, , Compatibility mode
TAG Start DF
I/O Range 0x100 .. 0x3f0, alignment 0x10, len 0x10
[16-bit addr]
I/O Range 0x100 .. 0x3f8, alignment 0x8, len 0x8
[16-bit addr]
I/O Range 0x100 .. 0xffc, alignment 0x4, len 0x4
[16-bit addr]
IRQ: 5 9 10 11 15 IRQ: High true edge sensitive
DMA: channel(s) 0 1 3
8-bit, not a bus master, count by byte, , Compatibility mode
DMA: channel(s) 0 1 3
8-bit, not a bus master, count by byte, , Compatibility mode
TAG Start DF
I/O Range 0x100 .. 0x3f0, alignment 0x10, len 0x10
[16-bit addr]
I/O Range 0x100 .. 0x3f8, alignment 0x8, len 0x8
[16-bit addr]
I/O Range 0x100 .. 0xffc, alignment 0x4, len 0x4
[16-bit addr]
IRQ: 5 9 10 11 15 IRQ: High true edge sensitive
DMA: channel(s) 0 1 3
8-bit, not a bus master, count by byte, , Compatibility mode
TAG End DF
Logical Device ID: AZT2001 0x01205407 #2
Device supports I/O Range Check
Device Description: MPU401 MIDI
TAG Start DF
Good Configuration
I/O Range 0x330 .. 0x330, alignment 0x2, len 0x2
[16-bit addr]
IRQ: 9 IRQ: High true edge sensitive
TAG Start DF
I/O Range 0x300 .. 0x330, alignment 0x30, len 0x2
[16-bit addr]
IRQ: 5 9 10 11 15 IRQ: High true edge sensitive
TAG Start DF
I/O Range 0x100 .. 0x3fe, alignment 0x2, len 0x2
[16-bit addr]
IRQ: 5 9 10 11 15 IRQ: High true edge sensitive
TAG End DF
Logical Device ID: AZT3001 0x01305407 #3
Device supports I/O Range Check
Device Description: GAME PORT
TAG Start DF
Good Configuration
I/O Range 0x200 .. 0x200, alignment 0x8, len 0x8
[16-bit addr]
TAG Start DF
I/O Range 0x208 .. 0x208, alignment 0x8, len 0x8
[16-bit addr]
TAG End DF
Logical Device ID: AZT4003 0x03405407 #4
Device supports I/O Range Check
Device Description: MODEM
TAG Start DF
Good Configuration
I/O Range 0x3e8 .. 0x3e8, alignment 0x8, len 0x8
[16-bit addr]
IRQ: 3 4 5 9 10 11 15 IRQ: High true edge sensitive
TAG Start DF
I/O Range 0x2f8 .. 0x2f8, alignment 0x8, len 0x8
[16-bit addr]
IRQ: 3 IRQ: High true edge sensitive
TAG Start DF
I/O Range 0x3f8 .. 0x3f8, alignment 0x8, len 0x8
[16-bit addr]
IRQ: 3 4 5 9 10 11 15 IRQ: High true edge sensitive
TAG Start DF
I/O Range 0x2e8 .. 0x2e8, alignment 0x8, len 0x8
[16-bit addr]
IRQ: 3 4 5 9 10 11 15 IRQ: High true edge sensitive
TAG Start DF
I/O Range 0x100 .. 0x3f8, alignment 0x8, len 0x8
[16-bit addr]
IRQ: 3 4 5 9 10 11 15 IRQ: High true edge sensitive
TAG End DF
Logical Device ID: AZT5001 0x01505407 #5
Device supports I/O Range Check
Device Description: EEPROM
TAG Start DF
Good Configuration
I/O Range 0x100 .. 0x3ff, alignment 0x1, len 0x1
[16-bit addr]
TAG End DF
End Tag
Successfully got 88 resources, 6 logical fdevs
-- card select # 0x0001
CSN AZT3002 (0x02305407), Serial Number 0xffffffff
Logical device #0
IO: 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000
IRQ 0 0
DMA 4 4
IO range check 0x00 activate 0x00
Logical device #1
IO: 0x0388 0x0388 0x0388 0x0388 0x0388 0x0388 0x0388 0x0388
IRQ 5 0
DMA 0 1
IO range check 0x00 activate 0x01
Logical device #2
IO: 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000
IRQ 9 0
DMA 4 4
IO range check 0x00 activate 0x01
Logical device #3
IO: 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000
IRQ 0 0
DMA 4 4
IO range check 0x00 activate 0x01
Logical device #4
IO: 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000
IRQ 10 0
DMA 4 4
IO range check 0x00 activate 0x01
Logical device #5
IO: 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000
IRQ 0 0
DMA 4 4
IO range check 0x00 activate 0x01
Card assigned CSN #2
Vendor ID SAG0001 (0x0100274c), Serial Number 0x050044b0
PnP Version 1.0, Vendor Version 1
Device Description: speed win SEDLBAUER AG
Logical Device ID: SAG0001 0x0100274c #0
Device supports I/O Range Check
TAG Start DF
I/O Range 0x100 .. 0x3f0, alignment 0x8, len 0x8
[not 16-bit addr]
IRQ: 3 4 5 7 10 11 12 13 15 - only one type (true/edge)
TAG Start DF
I/O Range 0x100 .. 0x3f0, alignment 0x8, len 0x8
[not 16-bit addr]
IRQ: 5 - only one type (true/edge)
TAG Start DF
I/O Range 0x100 .. 0x3f0, alignment 0x8, len 0x8
[not 16-bit addr]
IRQ: 7 - only one type (true/edge)
TAG End DF
End Tag
Successfully got 13 resources, 1 logical fdevs
-- card select # 0x0002
CSN SAG0001 (0x0100274c), Serial Number 0x050044b0
Logical device #0
IO: 0x0108 0x0108 0x0108 0x0108 0x0108 0x0108 0x0108 0x0108
IRQ 11 0
DMA 4 0
IO range check 0x00 activate 0x01
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filename="isa_common.diff"
Index: isa_common.c
===================================================================
RCS file: /data/cvs/src/sys/isa/isa_common.c,v
retrieving revision 1.16
diff -u -r1.16 isa_common.c
--- isa_common.c 2000/02/11 04:35:07 1.16
+++ isa_common.c 2000/03/28 19:26:44
@@ -207,6 +207,13 @@
SYS_RES_IOPORT, &i,
0, ~0, 1, 0 /* !RF_ACTIVE */);
if (res[i]) {
+ /* HACK */
+ if(res[i]->r_start != start) {
+ bus_release_resource(child,
+ SYS_RES_IOPORT, i,
+ res[i]);
+ continue;
+ }
result->ic_port[i].ir_start = start;
result->ic_port[i].ir_end = start + size - 1;
result->ic_port[i].ir_size = size;
--------------53A353B57F098AF27051730B--
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