Re: Voodoo 3 bug on 2.3.99pre3

Re: Voodoo 3 bug on 2.3.99pre3

[Michel D?nzer]

--- sabotage <kcz84@dial.pipex.com> wrote:

>  I have a voodoo 3 2000 PCI card on my UMAX s900 SMP and i was trying to
> get the SMP and the Voodoo to work with linux I decided to start with the
> graphics card i got a 2.3.99pre3 kernel via ftp from kernel.org and
> compiled it with voodoo support but NO ati card support (since i dont have
> ati -- well i do but i dont use it and it failed to compile when i had ATI
> checked anyway) thus i it compiled booted but the whoole console display
was
> completely messed up sorta reversed with weird colors etc basically a
> complete mess.

Sounds like the usual endianness problems ...

What depth?


>  So i was just wondering if anyone had any ideas on getting it to work or
> am i wasting my time.....

AFAIK Kostas has the 3Dfx fbdev working.


Michel


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Re: Voodoo 3 bug on 2.3.99pre3

[Kostas Gewrgiou]

[-- Attachment #1: Type: TEXT/PLAIN, Size: 923 bytes --]

On Tue, 28 Mar 2000, Michel D?nzer wrote:

> Sounds like the usual endianness problems ...
>
> What depth?

  Right the accelerated functions aren't big endian friendly,
it also needs to switch the framebuffer to the right byteswapping
for the depth in big endian machines.

> >  So i was just wondering if anyone had any ideas on getting it to work or
> > am i wasting my time.....
>
> AFAIK Kostas has the 3Dfx fbdev working.
>

I am attaching the patch that i use (which is far from perfect at the
moment) i did so i could work in fbdev support in the xfree tdfx driver.

Text accel is disabled, i also use a 32mb mapping for the registers
to include the 3D registers (needed by the xserver).
The xserver also needs a fb mapping with twice the ram size (for tiled
memory accesses also needed by the Xserver) unfortunately this has the side
affect that the reported memory from tdfxfb is twice the normal size.

  Kostas

[-- Attachment #2: Type: TEXT/PLAIN, Size: 6755 bytes --]

--- cvs/linux-pmac-devel/drivers/video/tdfxfb.c	Fri Jan  7 03:52:48 2000
+++ linux_2.3.99-pre3/drivers/video/tdfxfb.c	Tue Mar 28 18:02:22 2000
@@ -295,6 +295,7 @@
   unsigned long clip1max;
   unsigned long srcbase;
   unsigned long dstbase;
+  unsigned long miscinit0;
 };
 
 struct tdfxfb_par {
@@ -579,12 +580,16 @@
 
 static struct fb_info_tdfx fb_info;
 
+#if defined(CONFIG_PPC)           
+static int  noaccel = 1;          /* accel is broken in ppc */
+#else
 static int  noaccel = 0;
+#endif
+static int  nohwcursor = 1;       /* disable hwcursor for now */
 static int  nopan   = 0;
 static int  nowrap  = 1;      // not implemented (yet)
 static int  inverse = 0;
 static int  nomtrr = 0;
-static int  nohwcursor = 0;
 static char __initdata fontname[40] = { 0 };
 static const char *mode_option __initdata = NULL;
 
@@ -721,7 +726,7 @@
 static void do_pan_var(struct fb_var_screeninfo* var, struct fb_info_tdfx *i)
 {
     u32 addr;
-    addr = var->yoffset*i->current_par.lpitch;
+    addr = var->yoffset*i->current_par.lpitch + var->xoffset * ((var->bits_per_pixel+7)>>3);
     banshee_make_room(1);
     tdfx_outl(VIDDESKSTART, addr);
 }
@@ -1008,7 +1013,7 @@
   tdfx_outl(VIDPROCCFG,    reg->vidcfg);
   tdfx_outl(VGAINIT1,      reg->vgainit1);  
 
-  banshee_make_room(8);
+  banshee_make_room(9);
   tdfx_outl(SRCBASE,         reg->srcbase);
   tdfx_outl(DSTBASE,         reg->dstbase);
   tdfx_outl(COMMANDEXTRA_2D, 0);
@@ -1017,6 +1022,7 @@
   tdfx_outl(CLIP1MIN,        0);
   tdfx_outl(CLIP1MAX,        0x0fff0fff);
   tdfx_outl(SRCXY, 0);
+  tdfx_outl(MISCINIT0, (tdfx_inl(MISCINIT0) & ~0xc0000000) | reg->miscinit0);
 
   banshee_wait_idle();
 }
@@ -1353,6 +1359,17 @@
   vbs = vd;
   vbe = vt;
   
+#if defined(__BIG_ENDIAN)
+  switch(par->bpp) {
+    case 32: reg.miscinit0 = 0x40000000; break;
+    case 16: reg.miscinit0 = 0xc0000000; break;
+    default: reg.miscinit0 = 0x00000000; break;
+  }
+  /* XXX what can be done for 24bpp ?? */
+#elif
+  reg.miscinit0 = 0x00000000;
+#endif
+
   /* this is all pretty standard VGA register stuffing */
   reg.misc[0x00] = 
     0x0f |
@@ -1468,7 +1485,7 @@
   fb_info.cursor.enable=reg.vidcfg | VIDCFG_HWCURSOR_ENABLE;
   fb_info.cursor.disable=reg.vidcfg;
    
-  reg.stride    = par->width*cpp;
+  reg.stride    = par->width_virt*cpp;
   reg.cursloc   = 0;
    
   reg.cursc0    = 0; 
@@ -1523,13 +1540,8 @@
     return -EINVAL;
   }
 
-  if(var->xoffset) {
-    DPRINTK("xoffset not supported\n");
-    return -EINVAL;
-  }
-
-  if(var->xres != var->xres_virtual) {
-    DPRINTK("virtual x resolution != physical x resolution not supported\n");
+  if(var->xres > var->xres_virtual) {
+    DPRINTK("virtual x resolution < physical x resolution not supported\n");
     return -EINVAL;
   }
 
@@ -1550,12 +1562,12 @@
   case PCI_DEVICE_ID_3DFX_BANSHEE:
   case PCI_DEVICE_ID_3DFX_VOODOO3:
     par->width       = (var->xres + 15) & ~15; /* could sometimes be 8 */
-    par->width_virt  = par->width;
+    par->width_virt  = var->xres_virtual;
     par->height      = var->yres;
     par->height_virt = var->yres_virtual;
     par->bpp         = var->bits_per_pixel;
     par->ppitch      = var->bits_per_pixel;
-    par->lpitch      = par->width* ((par->ppitch+7)>>3);
+    par->lpitch      = par->width_virt* ((par->ppitch+7)>>3);
     par->cmap_len    = (par->bpp == 8) ? 256 : 16;
      
     par->baseline = 0;
@@ -1645,6 +1657,7 @@
     v.green.offset=8;
     v.blue.offset=0;
     v.red.length = v.green.length = v.blue.length = 8;
+    break;
   case 32:
     v.red.offset   = 16;
     v.green.offset = 8;
@@ -1708,7 +1721,7 @@
                        ? FB_VISUAL_PSEUDOCOLOR
                        : FB_VISUAL_DIRECTCOLOR;
 
-    fix->xpanstep    = 0; 
+    fix->xpanstep    = nopan ? 0 : 8;
     fix->ypanstep    = nopan ? 0 : 1;
     fix->ywrapstep   = nowrap ? 0 : 1;
 
@@ -1882,7 +1895,7 @@
   struct fb_info_tdfx* i = (struct fb_info_tdfx*)fb;
 
   if(nopan)                return -EINVAL;
-  if(var->xoffset)         return -EINVAL;
+  if(var->xoffset + var->xres > var->xres_virtual) return -EINVAL;
   if(var->yoffset > var->yres_virtual)   return -EINVAL;
   if(nowrap && 
      (var->yoffset + var->yres > var->yres_virtual)) return -EINVAL;
@@ -1962,6 +1975,7 @@
 #endif
   struct pci_dev *pdev = NULL;
   struct fb_var_screeninfo var;
+  unsigned short cmd;
   
 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,3,1)
   if(!pcibios_present()) return;
@@ -1983,18 +1997,23 @@
 	? BANSHEE_MAX_PIXCLOCK
 	: VOODOO3_MAX_PIXCLOCK;
 
+      /* Enable IO and MEM (not enabled in ppc by OF) */
+      pci_read_config_word( pdev, PCI_COMMAND, &cmd );
+      cmd |= (PCI_COMMAND_MEMORY | PCI_COMMAND_IO);
+      pci_write_config_word( pdev, PCI_COMMAND, cmd );
+
 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,3,1)
       fb_info.regbase_phys = pdev->base_address[0] & PCI_BASE_ADDRESS_MEM_MASK;
-      fb_info.regbase_size = 1 << 24;
+      fb_info.regbase_size = 1 << 25;
       fb_info.regbase_virt = 
-	(u32)ioremap_nocache(fb_info.regbase_phys, 1 << 24);
+	(u32)ioremap_nocache(fb_info.regbase_phys, 1 << 25);
       if(!fb_info.regbase_virt) {
 	printk("fb: Can't remap %s register area.\n", name);
 	return;
       }
 
       fb_info.bufbase_phys = pdev->base_address[1] & PCI_BASE_ADDRESS_MEM_MASK;
-      if(!(fb_info.bufbase_size = do_lfb_size())) {
+      if(!(fb_info.bufbase_size = 2*do_lfb_size())) {
 	printk("fb: Can't count %s memory.\n", name);
 	iounmap((void*)fb_info.regbase_virt);
 	return;
@@ -2010,16 +2029,16 @@
       fb_info.iobase = pdev->base_address[2] & PCI_BASE_ADDRESS_IO_MASK;
 #else
       fb_info.regbase_phys = pdev->resource[0].start;
-      fb_info.regbase_size = 1 << 24;
+      fb_info.regbase_size = 1 << 25;
       fb_info.regbase_virt = 
-	(u32)ioremap_nocache(fb_info.regbase_phys, 1 << 24);
+	(u32)ioremap_nocache(fb_info.regbase_phys, 1 << 25);
       if(!fb_info.regbase_virt) {
 	printk("fb: Can't remap %s register area.\n", name);
 	return -ENXIO;
       }
       
       fb_info.bufbase_phys = pdev->resource[1].start;
-      if(!(fb_info.bufbase_size = do_lfb_size())) {
+      if(!(fb_info.bufbase_size = 2*do_lfb_size())) {
 	iounmap((void*)fb_info.regbase_virt);
 	printk("fb: Can't count %s memory.\n", name);
 	return -ENXIO;
@@ -2443,7 +2462,7 @@
    fb_info.bufbase_size=start; 
    fb_info.cursor.cursorimage=fb_info.bufbase_size;
    printk("tdfxfb: reserving 1024 bytes for the hwcursor at 0x%08lx\n",
-	  fb_info.regbase_virt+fb_info.cursor.cursorimage);
+	  fb_info.bufbase_virt+fb_info.cursor.cursorimage);
 }
 
  

Re: Voodoo 3 bug on 2.3.99pre3

[phandel]

On Wed, 29 Mar 2000, sabotage wrote:

>  I have a voodoo 3 2000 PCI card on my UMAX s900 SMP and i was trying to get

You can try the _experimental_ kernel & XFree86 3.9.16 rpm from Kostas:

ftp://idd-01.imbc.gr/pub/voodoo3

NOTE: XFree86 4.0 REQUIRES a very different /etc/X11/XF86Config file from
XFree86 3.x.  I have some different XF86Config files at:

http://www.cise.ufl.edu/~phandel/linux/sample/

Also, you *may* need to change the BusID number based on what slot your
Voodoo3 is in (BusID "PCI:0:15:0" for me) if commenting it out doesn't
work.

3.9.16 runs well, although not as fast as 4.0.  I've put a comparison of
the Rage128-x86, TNT2, and Voodoo3 XF86 3.9.16 & 4.0 on my web page:

http://www.cise.ufl.edu/~phandel/linux/txt/r128_tnt2_v3.txt

I believe these were all done at 1024x768 16bpp.


Thanks,
Peter

[btw- you can also copy the tdfxfb.c from 2.3.x to a 2.2.14 tree and apply
Kostas' tdfxfb patch, which is what I'm running]


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Voodoo 3 bug on 2.3.99pre3

[sabotage]

hello all...

ok i dont know weather i am writing to the right people but here goes.

 I have a voodoo 3 2000 PCI card on my UMAX s900 SMP and i was trying to get
the SMP and the Voodoo to work with linux I decided to start with the
graphics card i got a 2.3.99pre3 kernel via ftp from kernel.org and compiled
it with voodoo support but NO ati card support (since i dont have ati --
well i do but i dont use it and it failed to compile when i had ATI checked
anyway) thus i it compiled booted but the whoole console display was
completely messed up sorta reversed with weird colors etc basically a
complete mess.

 So i was just wondering if anyone had any ideas on getting it to work or am
i wasting my time.....

thanks =)

PS talk about a weird/unsupported setup eh....


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