Re: Kernel DRI support

[Micha Feigin <michf@post.tau.ac.il>]

On Sat, Feb 07, 2004 at 12:32:05AM +0200, Micha Feigin wrote:
> On Fri, Feb 06, 2004 at 10:06:41PM +0000, David Seery wrote:
> > Hello,
> > 
> 
> Try the dri-devel mailing list, you'll probably have more luck with

BTW forgive me, I got this wrong, you should send this to the dri-users
list not the dri-devel list.

> this subject there.
> Look at http://dri.sourceforge.net/cgi-bin/moin.cgi/
> 
> > I have a laptop with a Radeon IGP 320M U1 Mobility graphics card.
> > 
> > I've been looking for information on the bugzilla at XFree86, usenet,
> > various Linux forums and the archives of this and other mailing lists.
> > It's not too difficult to get the thing up and running, at the moment
> > with a patched XFree86 and a patched 2.6.2 kernel.
> > 
> > I have two questions:
> > 
> > 1.  It seems like support for these nasty chipsets went into the kernel
> > around 2.4.22, but it doesn't work out of the box on 2.6.2 and I needed
> > to apply a patch, mostly to drivers/char/drm/radeon_cp.c, to shift the
> > base of the framebuffer.  This comes from http://bugs.xfree86.org/
> > show_bug.cgi?id=314.  The patch didn't apply cleanly so I did it by
> > hand.
> > 
> > Is this correct, or should the radeon agp stuff as is?
> > 
> > 2.  The result is not really any faster than doing it in software.  In
> > particular, it doesn't make any difference if I have mtrr write-
> > combining ranges set up or not, so it seems like the AGP acceleration
> > isn't really being used.
> > 
> 
> Try running glxinfo and look near the top whether dri is enabled (You
> also need to have it enabled in XF86Config).
> I'm afraid that I don't know this card so except for the setup options
> I probably can't help much with that one, sorry.
> 
> > Am I off the mark here, or is this a known problem with support for
> > these IGP devices?
> > 
> > I've been unable to find previous responses about this.  Pardon me if
> > I'm rehashing old ground.
> > 
> > For benchmarking purposes, I get about 450-480 fps with glxgears as
> > compared with 430-450 without DRI.  Or, is there another reason I should
> > be thinking about for poor performance?  (Such as, the inherent badness
> > of the card, perhaps?)
> > 
> > Cheers,
> > 
> > David
> > 
> > Some relevant output:
> > 
> > dmesg | grep -i agp
> > ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.AGPB._PRT]
> > Linux agpgart interface v0.100 (c) Dave Jones
> > agpgart: Detected Ati IGP320/M chipset
> > agpgart: Maximum main memory to use for agp memory: 148M
> > agpgart: AGP aperture is 64M @ 0xd4000000
> > agpgart: Found an AGP 2.0 compliant device at 0000:00:00.0.
> > agpgart: Putting AGP V2 device at 0000:00:00.0 into 4x mode
> > agpgart: Putting AGP V2 device at 0000:01:05.0 into 4x mode
> > 
> > dmesg | grep -i drm
> > [drm] Initialized i830 1.3.2 20021108 on minor 0
> > [drm] Initialized radeon 1.9.0 20020828 on minor 1
> > 
> > cat /proc/mtrr
> > reg00: base=0x00000000 (   0MB), size= 128MB: write-back, count=1
> > reg01: base=0x08000000 ( 128MB), size=  64MB: write-back, count=1
> > reg02: base=0xd4000000 (3392MB), size=  64MB: write-combining, count=2
> > reg03: base=0xe0000000 (3584MB), size=  64MB: write-combining, count=2
> > 
> > grep -i drm /var/log/XFree86.0.log        (trimmed)
> > drmOpenDevice: minor is 0
> > drmOpenDevice: node name is /dev/dri/card0
> > drmOpenDevice: open result is 6, (OK)
> > drmOpenDevice: minor is 0
> > drmOpenDevice: node name is /dev/dri/card0
> > drmOpenDevice: open result is 6, (OK)
> > drmOpenDevice: minor is 0
> > drmOpenDevice: node name is /dev/dri/card0
> > drmOpenDevice: open result is 6, (OK)
> > drmOpenDevice: minor is 1
> > drmOpenDevice: node name is /dev/dri/card1
> > drmOpenDevice: open result is 6, (OK)
> > drmGetBusid returned ''
> > (II) RADEON(0): [drm] created "radeon" driver at busid "PCI:1:5:0"
> > (II) RADEON(0): [drm] added 8192 byte SAREA at 0xcc92b000
> > (II) RADEON(0): [drm] mapped SAREA 0xcc92b000 to 0x44268000
> > (II) RADEON(0): [drm] framebuffer handle = 0xe0000000
> > (II) RADEON(0): [drm] added 1 reserved context for kernel
> > (II) RADEON(0): [drm] register handle = 0xd0100000
> > (II) RADEON(0): [drm] installed DRM signal handler
> > (II) RADEON(0): [drm] Added 32 65536 byte vertex/indirect buffers
> > (II) RADEON(0): [drm] Mapped 32 vertex/indirect buffers
> > (II) RADEON(0): [drm] dma control initialized, using IRQ 9
> > (II) RADEON(0): [drm] Initialized kernel GART heap manager, 5111808
> > 
> > grep -i agp /var/log/XFree86.0.log             (trimmed)
> > (**) RADEON(0): Option "AGPMode" "4"
> > (**) RADEON(0): Option "AGPFastWrite" "true"
> > (II) RADEON(0): AGP card detected
> > (**) RADEON(0): AGP 4x mode is configured
> > (**) RADEON(0): Enabling AGP Fast Write
> > (II) RADEON(0): [agp] Mode 0x0f000214 [AGP 0x1002/0xcab0; Card
> > 0x1002/0x4336]
> > (II) RADEON(0): [agp] 8192 kB allocated with handle 0x00000001
> > (II) RADEON(0): [agp] ring handle = 0xd4000000
> > (II) RADEON(0): [agp] Ring mapped at 0x4426a000
> > (II) RADEON(0): [agp] ring read ptr handle = 0xd4101000
> > (II) RADEON(0): [agp] Ring read ptr mapped at 0x4436b000
> > (II) RADEON(0): [agp] vertex/indirect buffers handle = 0xd4102000
> > (II) RADEON(0): [agp] Vertex/indirect buffers mapped at 0x4436c000
> > (II) RADEON(0): [agp] GART texture map handle = 0xd4302000
> > (II) RADEON(0): [agp] GART Texture map mapped at 0x4456c000
> > 
> > 
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