AMD768 & GeForce5200: nouveau bug??

AMD768 & GeForce5200: nouveau bug??

[Grzesiek Sójka]

Hi there,

	Im using ASUS A7M266-D mainboard based on AMD768 chipset and Nvidia
GeForce FX5200 dual DVI graphics adapter. I'm forced to switch from
binary Nvidia drivers to nouveau but the problem is that nouveau.ko
would not load with AGP support turned on. Is it a nouveau/kernel bug??
	To build the kernel I used the kernel tree downloaded from the nouveau
repository about a week ago. The dmesg output with/without the AGP
support you can find at:
http://yen.ipipan.waw.pl/~gs159090/tmp/withAGP.txt.gz
http://yen.ipipan.waw.pl/~gs159090/tmp/withoutAGP.txt.gz
And here is lspci -vv output
http://yen.ipipan.waw.pl/~gs159090/tmp/lspci-vv.txt.gz

Thanks in advance for any help.

Regards
Greg

Re: AMD768 & GeForce5200: nouveau bug??

[Francisco Jerez]

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Grzesiek Sójka <pld-t9zbU3WrWHI@public.gmane.org> writes:

> Hi there,
>
> 	Im using ASUS A7M266-D mainboard based on AMD768 chipset and Nvidia
> GeForce FX5200 dual DVI graphics adapter. I'm forced to switch from
> binary Nvidia drivers to nouveau but the problem is that nouveau.ko
> would not load with AGP support turned on. Is it a nouveau/kernel bug??
> 	To build the kernel I used the kernel tree downloaded from the nouveau
> repository about a week ago. The dmesg output with/without the AGP
> support you can find at:
> http://yen.ipipan.waw.pl/~gs159090/tmp/withAGP.txt.gz
> http://yen.ipipan.waw.pl/~gs159090/tmp/withoutAGP.txt.gz
> And here is lspci -vv output
> http://yen.ipipan.waw.pl/~gs159090/tmp/lspci-vv.txt.gz
>
> Thanks in advance for any help.

That looks like a bug in the amdk7 agp driver, can you give this patch a
try?

>
> Regards
> Greg
> _______________________________________________
> Nouveau mailing list
> Nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
> http://lists.freedesktop.org/mailman/listinfo/nouveau


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diff --git a/drivers/char/agp/amd-k7-agp.c b/drivers/char/agp/amd-k7-agp.c
index b6b1568..82e5189 100644
--- a/drivers/char/agp/amd-k7-agp.c
+++ b/drivers/char/agp/amd-k7-agp.c
@@ -303,13 +303,15 @@ static void amd_irongate_tlbflush(struct agp_memory *temp)
 
 static int amd_insert_memory(struct agp_memory *mem, off_t pg_start, int type)
 {
+	struct agp_bridge_data *bridge = mem->bridge;
 	int i, j, num_entries;
 	unsigned long __iomem *cur_gatt;
 	unsigned long addr;
 
 	num_entries = A_SIZE_LVL2(agp_bridge->current_size)->num_entries;
 
-	if (type != 0 || mem->type != 0)
+	if (!bridge || type != mem->type ||
+	    bridge->driver->agp_type_to_mask_type(bridge, type))
 		return -EINVAL;
 
 	if ((pg_start + mem->page_count) > num_entries)

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Re: AMD768 & GeForce5200: nouveau bug??

[Grzesiek Sójka]

On 09/24/10 22:27, Francisco Jerez wrote:
> Grzesiek Sójka<pld-t9zbU3WrWHI@public.gmane.org>  writes:
>
>> Hi there,
>>
>> 	Im using ASUS A7M266-D mainboard based on AMD768 chipset and Nvidia
>> GeForce FX5200 dual DVI graphics adapter. I'm forced to switch from
>> binary Nvidia drivers to nouveau but the problem is that nouveau.ko
>> would not load with AGP support turned on. Is it a nouveau/kernel bug??
>> 	To build the kernel I used the kernel tree downloaded from the nouveau
>> repository about a week ago. The dmesg output with/without the AGP
>> support you can find at:
>> http://yen.ipipan.waw.pl/~gs159090/tmp/withAGP.txt.gz
>> http://yen.ipipan.waw.pl/~gs159090/tmp/withoutAGP.txt.gz
>> And here is lspci -vv output
>> http://yen.ipipan.waw.pl/~gs159090/tmp/lspci-vv.txt.gz
>>
>> Thanks in advance for any help.
>
> That looks like a bug in the amdk7 agp driver, can you give this patch a
> try?
The patch from Francisco Jerez works fine for me so I was wondering what 
to do next. It would be nice to apply it to the official kernel tree. 
Should I open a bug?? Write to someone??