Subject: Re: kern/33742: Multiple bktr cards and changing PCI latency.
To: None <kern-bug-people@netbsd.org, gnats-admin@netbsd.org,>
From: Scott Presnell <srp@tworoads.net>
List: netbsd-bugs
Date: 06/15/2006 21:30:02
The following reply was made to PR kern/33742; it has been noted by GNATS.
From: Scott Presnell <srp@tworoads.net>
To: gnats-bugs@NetBSD.org
Cc:
Subject: Re: kern/33742: Multiple bktr cards and changing PCI latency.
Date: Thu, 15 Jun 2006 12:52:33 -0700
Christos Zoulas wrote:
> The following reply was made to PR kern/33742; it has been noted by GNATS.
>
> From: christos@zoulas.com (Christos Zoulas)
> To: gnats-bugs@NetBSD.org, kern-bug-people@netbsd.org,
> gnats-admin@netbsd.org, netbsd-bugs@netbsd.org
> Cc:
> Subject: Re: kern/33742: Multiple bktr cards and changing PCI latency.
> Date: Thu, 15 Jun 2006 15:36:52 -0400
>
> On Jun 15, 7:25pm, srp@tworoads.net (srp@tworoads.net) wrote:
> -- Subject: kern/33742: Multiple bktr cards and changing PCI latency.
>
>
> What are the valid values of latency? Shouldn't the driver check for those?
>
> christos
>
(I am at the edge of my understanding).
To the best of my knowledge the driver does not check except for the
case of !latency.
pcictl shows the following for a similar card but in a very different
machine. (can't get to the machine in question at this time)
PCI configuration registers:
Common header:
0x00: 0x036e109e 0x02800106 0x04000002 0x00804000
Vendor Name: Brooktree (0x109e)
Device Name: Bt878 Video Capture (0x036e)
Command register: 0x0106
I/O space accesses: off
Memory space accesses: on
Bus mastering: on
Special cycles: off
MWI transactions: off
Palette snooping: off
Parity error checking: off
Address/data stepping: off
System error (SERR): on
Fast back-to-back transactions: off
Status register: 0x0280
Capability List support: off
66 MHz capable: off
User Definable Features (UDF) support: off
Fast back-to-back capable: on
Data parity error detected: off
DEVSEL timing: medium (0x1)
Slave signaled Target Abort: off
Master received Target Abort: off
Master received Master Abort: off
Asserted System Error (SERR): off
Parity error detected: off
Class Name: multimedia (0x04)
Subclass Name: video (0x00)
Interface: 0x00
Revision ID: 0x02
BIST: 0x00
Header Type: 0x00+multifunction (0x80)
Latency Timer: 0x40
Cache Line Size: 0x00
Type 0 ("normal" device) header:
0x10: 0xf2001008 0x00000000 0x00000000 0x00000000
0x20: 0x00000000 0x00000000 0x00000000 0x13eb0070
0x30: 0x00000000 0x00000000 0x00000000 0x2810010a
Base address register at 0x10
type: 32-bit prefetchable memory
base: 0xf2001000, not sized
Base address register at 0x14
not implemented(?)
Base address register at 0x18
not implemented(?)
Base address register at 0x1c
not implemented(?)
Base address register at 0x20
not implemented(?)
Base address register at 0x24
not implemented(?)
Cardbus CIS Pointer: 0x00000000
Subsystem vendor ID: 0x0070
Subsystem ID: 0x13eb
Expansion ROM Base Address: 0x00000000
Reserved @ 0x34: 0x00000000
Reserved @ 0x38: 0x00000000
Maximum Latency: 0x28
Minimum Grant: 0x10
Interrupt pin: 0x01 (pin A)
Interrupt line: 0x0a
Device-dependent header:
0x40: 0x00000000 0x00000000 0x00000000 0x00000000
0x50: 0x00000000 0x00000000 0x00000000 0x00000000
0x60: 0x00000000 0x00000000 0x00000000 0x00000000
0x70: 0x00000000 0x00000000 0x00000000 0x00000000
0x80: 0x00000000 0x00000000 0x00000000 0x00000000
0x90: 0x00000000 0x00000000 0x00000000 0x00000000
0xa0: 0x00000000 0x00000000 0x00000000 0x00000000
0xb0: 0x00000000 0x00000000 0x00000000 0x00000000
0xc0: 0x00000000 0x00000000 0x00000000 0x00000000
0xd0: 0x00000000 0x00000000 0x00000000 0x00000000
0xe0: 0x00000000 0x00000000 0x00000000 0x00000000
0xf0: 0x00000000 0x00000000 0x00000000 0x00000000