Re: AMD768 & GeForce5200: nouveau bug??

[Francisco Jerez <currojerez-sGOZH3hwPm2sTnJN9+BGXg@public.gmane.org>]

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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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