Xfree86 4.0 (mach stuff)

Xfree86 4.0 (mach stuff)

[James B. Parker]

I noticed plenty of people working on getting rage128 hardware working with
4.0, so where is the support for earlier hardware (rage pro, rage ++,
whatever)?  I am sure not everyone running LinuxPPC has a rage 128 setup.
Or am I just missing something (like the same config file works for both)?

If I knew what the heck to do with the 4.0 config file to get it working
with my ATI rage pro chip, I certainly would give it a try.
Any suggestions?
James


** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/

Re: Xfree86 4.0 (mach stuff)

[Morningstar]

On Fri, 17 Mar 2000, James B. Parker wrote:

>
> I noticed plenty of people working on getting rage128 hardware working with
> 4.0, so where is the support for earlier hardware (rage pro, rage ++,
> whatever)?  I am sure not everyone running LinuxPPC has a rage 128 setup.
> Or am I just missing something (like the same config file works for both)?

	If I recall looking at the docs, Rage Pro and the rest are already
 supported by 4.0. I'ts the 128's that need the tweaking. I've got a Rage
 Pro built in video (I use a Nexus 128 PCI) and X4.0 had no trouble with
 it or finding the drivers for it. Still don't have X up though, working
 on the 'no screens' problem...



                                                         -Morningstar

                    * We dance where angels fear to tread *

              * I seek a lover whose kiss is like an open wound *

--
Webmaster
Antioch College
Yellow Springs, OH 45387
webmaster@antioch-college.edu


** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/

Re: Xfree86 4.0 (mach stuff)

[Michael Schmitz]

>
> That is exactly the issue I am having! No screens!
> Ok, I believe you are correct about 4.0 supporting the rage pro chip.
> So, what exactly does 'no screens' mean?  Where should I start poking around
> to work on this issue?

What does the contents of /var/log/XFree86.0.log tell you?

I'll send my config by PM for reference. Please note that X crashed for
me, but at least my config apparently gets accepted :-)

	Michael


** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/

Re: Xfree86 4.0 (mach stuff)

[Michel Dänzer]

"James B. Parker" wrote:
>
> I noticed plenty of people working on getting rage128 hardware working with
> 4.0, so where is the support for earlier hardware (rage pro, rage ++,
> whatever)?

The ati driver is for them (although not very well accelerated yet), but I
doubt it works on PPC yet due to the usual problems (endianness, endianness
and endianness, ... :)

Kostas Gewrgiou, me and maybe others are working on a general solution to make
most drivers work with only minor changes or no changes at all.


> I am sure not everyone running LinuxPPC has a rage 128 setup.
> Or am I just missing something (like the same config file works for both)?

No, the Rage128 uses the r128 driver.


> If I knew what the heck to do with the 4.0 config file to get it working
> with my ATI rage pro chip, I certainly would give it a try.
> Any suggestions?

Look at the XF86Config manpage, the format of the file has changed.


Michel


** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/

Re: Xfree86 4.0 (mach stuff)

[Michael Schmitz]

> > Beige G3 (rev 2) Rage Pro chip (onboard) w/6mb vram
>
> So it isn't only a Lombard issue *sigh*

Apparently not. But let's wait for his lspci log.

I've done a bit more homework and located the spots inside atyfb where the
kernel crashes when running XFree86 without -probeonly. Code snippets
below, the bottom line: the first register access on the card fails.
(My interpretation of the xmon output and the disassembly is more than
only part lucky guess but it's been confirmed with trace messages from the
kernel). The machine drops into xmon and I could perhaps poke around in
the PCI bridge if someone could explain how exactly to do that from xmon.
The test was made without the busid option set, but the X server
apparently managed to mangle the PCI setup anyway - the whole colormap and
cursor color functions were just fine up to the moment where X
switches the console and starts up.

The source:

static void
aty_set_cursor_color(struct fb_info_aty *fb, u8 *pixel,
                     u8 *red, u8 *green, u8 *blue)
{
        struct aty_cursor *c = fb->cursor;
	int i;

        if (!c)
                return;

#ifdef __sparc__
        if (fb->mmaped && (!fb->fb_info.display_fg
            || fb->fb_info.display_fg->vc_num == fb->vtconsole))
		return;
#endif

        for (i = 0; i < 2; i++) {
		c->color[i] =  (u32)red[i] << 24;
      		c->color[i] |= (u32)green[i] << 16;
                c->color[i] |= (u32)blue[i] <<  8;
       		c->color[i] |= (u32)pixel[i];
	}

	wait_for_fifo(2, fb);				<----- in here
        printk("aty_set_cursor_color: write regs\n");
 	aty_st_le32(CUR_CLR0, c->color[0], fb);
		  aty_st_le32(CUR_CLR1, c->color[1], fb);
}


static int atyfb_setcolreg(u_int regno, u_int red, u_int green, u_int
blue,
                           u_int transp, struct fb_info *fb)
{
    struct fb_info_aty *info = (struct fb_info_aty *)fb;
    int i, scale;

    if (regno > 255)
        return 1;
    red >>= 8;
    green >>= 8;
    blue >>= 8;
    info->palette[regno].red = red;
    info->palette[regno].green = green;
    info->palette[regno].blue = blue;
    i = aty_ld_8(DAC_CNTL, info) & 0xfc;		<--- here
    if (Gx == GT_CHIP_ID || Gx == GU_CHIP_ID || Gx == GV_CHIP_ID ||
        Gx == GW_CHIP_ID || Gx == GZ_CHIP_ID || Gx == LG_CHIP_ID ||
        Gx == GB_CHIP_ID || Gx == GD_CHIP_ID || Gx == GI_CHIP_ID ||
        Gx == GP_CHIP_ID || Gx == GQ_CHIP_ID)
        i |= 0x2;       /*DAC_CNTL|0x2 turns off the extra brightness for gt*/
    printk("atyfb_setcolreg: write DAC_CNTL\n");
    aty_st_8(DAC_CNTL, i, info);
    aty_st_8(DAC_MASK, 0xff, info);
    scale = ((Gx != GX_CHIP_ID) && (Gx != CX_CHIP_ID) &&
             (info->current_par.crtc.bpp == 16)) ? 3 : 0;
    printk("atyfb_setcolreg: write lut regs\n");
    info->aty_cmap_regs->windex = regno << scale;
    eieio();
    info->aty_cmap_regs->lut = red;
    eieio();
    info->aty_cmap_regs->lut = green;
    eieio();
    info->aty_cmap_regs->lut = blue;
    eieio();

    [...]


> > Well, the build took its usual length of time but I don't think everything
> > was built.  Major bin files seem to be missing.  My x86 installation is
> > based on the Redhat 6.0 install from Summer.
>
> Which has 3.3.x I suppose. Lots of things have changes in 4.0, maybe those
> bin files aren't needed anymore or are somewhere else? Which ones are you
> referring to?

And did you just install the new xfree over the old files, instead of into
a new directory? I kept my 3.3.x installation untouched (except for 4.0
trampling over /etc/X11/) for good reason :-)

	Michael


** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/