Re: G400 behavior different, 2.2.18->2.4.0

Re: G400 behavior different, 2.2.18->2.4.0

[Petr Vandrovec]

On 16 Jan 01 at 17:16, Chad Miller wrote:

(added mj@suse.cz, as he may be interested in one range behind bridge 
overlapping both forwarding ranges...)

> #00:01.0 PCI bridge: VIA Technologies, Inc. VT8371 [KX133 AGP]  (prog-if \
> #00 [Normal decode])
> #   Flags: bus master, 66Mhz, medium devsel, latency 0
> #   Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
> #   Memory behind bridge: d4000000-d6ffffff
> #   Prefetchable memory behind bridge: d7000000-d8ffffff
> #   Capabilities: [80] Power Management version 2
> #01:00.0 VGA compatible controller: Matrox Graphics, Inc. MGA G400 AGP \
> #(rev 05) (prog-if 00 [VGA])
> #   Subsystem: Matrox Graphics, Inc. Millennium G400 MAX/Dual Head 32Mb
> #   Flags: bus master, VGA palette snoop, medium devsel, latency 32, IRQ 10
> #   Memory at d6000000 (32-bit, prefetchable)
> #   Memory at d4000000 (32-bit, non-prefetchable)
> #   Memory at d5000000 (32-bit, non-prefetchable)
> #   Capabilities: [dc] Power Management version 2
> #   Capabilities: [f0] AGP version 2.0

Please, add your BIOS into list of broken BIOSes and stop complaining ;-)

Your BIOS splitted 32MB G400 range into 16MB non-prefetchable d600-d6ff 
and 16MB prefetchable (d700-d7ff) range. Probably BIOS though that it
is setting G400 framebuffer at D7000000 for 32MB, but as D7000000 is not
multiple of 32MB, it cannot work.

You should try upgrading BIOS. If it does not help... you can try
kernel resources assigning code, but as it skips VGA adapters currently,
it is long way to go.

BTW, correct BIOS should put G400's resource #1 at D4000000, #2 at D4800000,
and #0 at D6000000. Programming non-prefetchable range for D400-D4FF,
and prefetchable as D600-D7FF... Leaving D5xx unused. 
                                    Sorry for bad news,
                                                Petr Vandrovec
                                                vandrove@vc.cvut.cz
                                                
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
Please read the FAQ at http://www.tux.org/lkml/

Re: G400 behavior different, 2.2.18->2.4.0

[Chad Miller]

On Tue, Jan 16, 2001 at 10:40:51PM +0000, Petr Vandrovec wrote:
> [X] Output under 2.2.x is correct: '/25' for 32MB range. I have no idea
> why X complains about region D6000000-D7FFFFFF - can you look at
> '... regions behind bridge' when you boot 2.2.x (they are on 0:01.0
> device, AFAIK) ? Under 2.4.x you showed that prefetchable region is 
> D6000000-D8FFFFFF, which correctly covers 2.2.x framebuffer address
> (although it is not power of 2, but who knows...).

Here's the full 2.2 output of 'lspci -v':

#00:00.0 Host bridge: VIA Technologies, Inc. VT8371 [KX133] (rev 02)
#	Flags: bus master, medium devsel, latency 0
#	Memory at d0000000 (32-bit, prefetchable)
#	Capabilities: [a0] AGP version 2.0
#
#00:01.0 PCI bridge: VIA Technologies, Inc. VT8371 [KX133 AGP]  (prog-if \
#00 [Normal decode])
#	Flags: bus master, 66Mhz, medium devsel, latency 0
#	Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
#	Memory behind bridge: d4000000-d6ffffff
#	Prefetchable memory behind bridge: d7000000-d8ffffff
#	Capabilities: [80] Power Management version 2
#
#00:07.0 ISA bridge: VIA Technologies, Inc. VT82C686 [Apollo Super South] \
#(rev 22)
#	Subsystem: VIA Technologies, Inc. VT82C686/A PCI to ISA Bridge
#	Flags: bus master, stepping, medium devsel, latency 0
#
#00:07.1 IDE interface: VIA Technologies, Inc. Bus Master IDE (rev 10) \
#(prog-if 8a [Master SecP PriP])
#	Flags: bus master, medium devsel, latency 32
#	I/O ports at e000
#	Capabilities: [c0] Power Management version 2
#
#00:07.4 Host bridge: VIA Technologies, Inc. VT82C686 [Apollo Super ACPI] \
#(rev 30)
#	Flags: medium devsel
#	Capabilities: [68] Power Management version 2
#
#00:09.0 Ethernet controller: Intel Corporation 82557 [Ethernet Pro 100] \
#(rev 08)
#	Subsystem: Intel Corporation EtherExpress PRO/100+ Management Adapter
#	Flags: bus master, medium devsel, latency 32, IRQ 11
#	Memory at da100000 (32-bit, non-prefetchable)
#	I/O ports at ec00
#	Memory at da000000 (32-bit, non-prefetchable)
#	Capabilities: [dc] Power Management version 2
#
#01:00.0 VGA compatible controller: Matrox Graphics, Inc. MGA G400 AGP \
#(rev 05) (prog-if 00 [VGA])
#	Subsystem: Matrox Graphics, Inc. Millennium G400 MAX/Dual Head 32Mb
#	Flags: bus master, VGA palette snoop, medium devsel, latency 32, IRQ 10
#	Memory at d6000000 (32-bit, prefetchable)
#	Memory at d4000000 (32-bit, non-prefetchable)
#	Memory at d5000000 (32-bit, non-prefetchable)
#	Capabilities: [dc] Power Management version 2
#	Capabilities: [f0] AGP version 2.0


The diff from above 2.2.18 to 2.4.0:
3,4c3,4
< 	Memory at d0000000 (32-bit, prefetchable)
< 	Capabilities: [a0] AGP version 2.0
---
> 	Memory at d0000000 (32-bit, prefetchable) [size=64M]
> 	Capabilities: <available only to root>
11c11
< 	Capabilities: [80] Power Management version 2
---
> 	Capabilities: <available only to root>
19,20c19,20
< 	I/O ports at e000
< 	Capabilities: [c0] Power Management version 2
---
> 	I/O ports at e000 [size=16]
> 	Capabilities: <available only to root>
24c24
< 	Capabilities: [68] Power Management version 2
---
> 	Capabilities: <available only to root>
29,32c29,33
< 	Memory at da100000 (32-bit, non-prefetchable)
< 	I/O ports at ec00
< 	Memory at da000000 (32-bit, non-prefetchable)
< 	Capabilities: [dc] Power Management version 2
---
> 	Memory at da100000 (32-bit, non-prefetchable) [size=4K]
> 	I/O ports at ec00 [size=64]
> 	Memory at da000000 (32-bit, non-prefetchable) [size=1M]
> 	Expansion ROM at <unassigned> [disabled] [size=1M]
> 	Capabilities: <available only to root>
36,41c37,42
< 	Flags: bus master, VGA palette snoop, medium devsel, latency 32, IRQ 10
< 	Memory at d6000000 (32-bit, prefetchable)
< 	Memory at d4000000 (32-bit, non-prefetchable)
< 	Memory at d5000000 (32-bit, non-prefetchable)
< 	Capabilities: [dc] Power Management version 2
< 	Capabilities: [f0] AGP version 2.0
---
> 	Flags: bus master, VGA palette snoop, medium devsel, latency 64, IRQ 10
> 	Memory at d8000000 (32-bit, prefetchable) [size=16M]
> 	Memory at d4000000 (32-bit, non-prefetchable) [size=16K]
> 	Memory at d5000000 (32-bit, non-prefetchable) [size=8M]
> 	Expansion ROM at <unassigned> [disabled] [size=64K]
> 	Capabilities: <available only to root>
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
Please read the FAQ at http://www.tux.org/lkml/