3dfx kernel patch

3dfx kernel patch

[Denis]

Hello,
my computer is a beige G3 with a 3dfx 3 2000 card. I cannot boot
correctly on my 3dfx. I have recompiled the kernel 2.4.3 but the text
seems to be mirrored (the top of the character is at the bottom and
vice-versa) and  the color of the console are not correct.  My kernel
arguments are video=tdfx:1024x768-8@60, but I have tried a lot of
configurations.

Is there a patch for the kernel 2.4.x ???


Thanks

Denis Muquardt (Belgium).


     _____  ______       _
    |  __ \|  ____|     (_)
    | |  | | |__   _ __  _ ___
    | |  | |  __| | '_ \| / __|
    | |__| | |____| | | | \__ \
    |_____/|______|_| |_|_|___/


/******************************************/


     +-+-+-+-+-+-+ denis.m@skynet.be
     |e|-|m|a|i|l| denis.muquardt@chello.be
     +-+-+-+-+-+-+ DenisM@mac.com


/******************************************/


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Re: 3dfx kernel patch

[Kaoru Fukui]

From: Denis <denis.muquardt@chello.be>
To: linuxppc-dev@lists.linuxppc.org
Subject: 3dfx kernel patch
Date: Mon, 2 Apr 2001 17:39:31 +0200

>
> Hello,
> my computer is a beige G3 with a 3dfx 3 2000 card. I cannot boot
> correctly on my 3dfx. I have recompiled the kernel 2.4.3 but the text
> seems to be mirrored (the top of the character is at the bottom and
> vice-versa) and  the color of the console are not correct.  My kernel
> arguments are video=tdfx:1024x768-8@60, but I have tried a lot of
> configurations.
>
> Is there a patch for the kernel 2.4.x ???

>video=tdfx:

The name is worng,It's tdfxfb.
But I don't have the card.

Kaoru


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Re: 3dfx kernel patch

[Ani Joshi]

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On Tue, 3 Apr 2001, Kaoru Fukui wrote:

> >video=tdfx:
>
> The name is worng,It's tdfxfb.
> But I don't have the card.

No, the name is correct.  Arguments for the tdfxfb driver use
"video=tdfx:...."

The attatched patch will fix the "mirrored" text, but you *must* boot with
"video=tdfx:noaccel" as this patch doesn't have the character endian
swapping.


ani

[-- Attachment #2: Type: TEXT/PLAIN, Size: 1109 bytes --]

--- tdfxfb.c.orig	Mon Apr  2 03:09:14 2001
+++ tdfxfb.c	Mon Apr  2 03:18:48 2001
@@ -279,6 +279,7 @@
   unsigned long clip1max;
   unsigned long srcbase;
   unsigned long dstbase;
+  unsigned long miscinit0;
 };
 
 struct tdfxfb_par {
@@ -921,6 +922,7 @@
   tdfx_outl(VIDDESKSTART,  reg->startaddr);
   tdfx_outl(VIDPROCCFG,    reg->vidcfg);
   tdfx_outl(VGAINIT1,      reg->vgainit1);  
+  tdfx_outl(MISCINIT0,	   reg->miscinit0);
 
   banshee_make_room(8);
   tdfx_outl(SRCBASE,         reg->srcbase);
@@ -1411,6 +1413,26 @@
 
   reg.screensize = par->width | (par->height << 12);
   reg.vidcfg &= ~VIDCFG_HALF_MODE;
+
+  reg.miscinit0 = tdfx_inl(MISCINIT0);
+
+#if defined(__BIG_ENDIAN)
+  switch (par->bpp) {
+    case 8:
+      reg.miscinit0 &= ~(1 << 30);
+      reg.miscinit0 &= ~(1 << 31);
+      break;
+    case 16:
+      reg.miscinit0 |= (1 << 30);
+      reg.miscinit0 |= (1 << 31);
+      break;
+    case 24:
+    case 32:
+      reg.miscinit0 |= (1 << 30);
+      reg.miscinit0 &= ~(1 << 31);
+      break;
+  }
+#endif
 
   do_write_regs(&reg);
 

Re: 3dfx kernel patch

[Kaoru Fukui]

From: Ani Joshi <ajoshi@shell.unixbox.com>
To: Kaoru Fukui <k_fukui@highway.ne.jp>
Subject: Re: 3dfx kernel patch
Date: Mon, 2 Apr 2001 10:05:35 -0700 (PDT)
cc: Denis <denis.muquardt@chello.be>, <linuxppc-dev@lists.linuxppc.org>

>
>
> On Tue, 3 Apr 2001, Kaoru Fukui wrote:
>
> > >video=tdfx:
> >
> > The name is worng,It's tdfxfb.
> > But I don't have the card.
>
> No, the name is correct.  Arguments for the tdfxfb driver use
> "video=tdfx:...."
>
> The attatched patch will fix the "mirrored" text, but you *must* boot with
> "video=tdfx:noaccel" as this patch doesn't have the character endian
> swapping.

Thanks,Ani for your patch.
I will add the patch next kernel.

Denis  sorry I didn't know that.

Kaoru


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Re: 3dfx kernel patch

[Nicolas Dimitrijevic]

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Hello,

Here is my [big] patch for tdfxfb

added :
- support for PPC with full accel (char, string, cursor) for 8/16/24/32 bpp
- support for 2X DAC mode (for > 1280x1024-75) (PPC/x86)
- bugs corrections, should whork with all framebuffer app's. (PPC/x86)

BUT, I never tested this on x86 :/

--
Nicolas Dimitrijevic
(nicod)

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