drm MSI support

[Matt Dawson]

On Saturday 04 October 2008 16:39:21 Robert Noland wrote:
> When drm loads it will also report that it has enabled MSI.
>
> Please send me reports of what chips do/don't work.

Yep, looking good on an X850XT:

drm0: <ATI Radeon R480 X850 XT> on vgapci0
info: [drm] MSI enabled 1 message(s)
info: [drm] Setting GART location based on new memory map
info: [drm] Loading R400 Microcode
info: [drm] Num pipes: 4
info: [drm] writeback test succeeded in 1 usecs
drm0: [ITHREAD]

Pre-MSI
8800 FPS in texcyl demo
4800 FPS in glxgears
602 FPS in terrain demo
glxs completed OK

With MSI
7450 FPS in texcyl demo
4450 FPS in glxgears
598 FPS in terrain demo
glxs completed OK

vgapci0 at pci0:3:0:0:     class=0x030000 card=0x0b121002 chip=0x5d521002 
rev=0x00 hdr=0x00
    vendor     = 'ATI Technologies Inc'
    device     = 'Radeon X850 Series'
    class      = display
    subclass   = VGA
    cap 01[50] = powerspec 2  supports D0 D1 D2 D3  current D0
    cap 10[58] = PCI-Express 1 endpoint
    cap 05[80] = MSI supports 1 message, 64 bit enabled with 1 message
vgapci1 at pci0:3:0:1:     class=0x038000 card=0x0b131002 chip=0x5d721002 
rev=0x00 hdr=0x00
    vendor     = 'ATI Technologies Inc'
    device     = 'Radeon X850 Series - Secondary'
    class      = display
    cap 01[50] = powerspec 2  supports D0 D1 D2 D3  current D0
    cap 10[58] = PCI-Express 1 endpoint

Interrupt request lines:
    0 (root0)
    1 (atkbd0)
    3 (root0)
    4 (uart0)
    5 (root0)
    6 (fdc0)
    7 (ppc0)
    8 (atrtc0)
    9 (acpi0)
    10-11 (root0)
    12 (psm0)
    13 (root0)
    14 (ata0)
    15 (ata1)
    16-19 (root0)
    20 (atapci2)
    21 (ohci0)
    22 (ehci0)
    23 (atapci1)
    256 (vgapci0)

Anything else needed or is that enough? I've only tried the X850 out of all of 
my cards, as only this machine has a -CURRENT installed. Also hanging around 
are the Xpress 200 (which doesn't show MSI support in pciconf -lvc so I think 
it may be a pointless exercise), a 9200 and a 9700Pro. If you think it's worth 
it, I'll set up a -CURRENT on the AGP box and test these.

Sorry for the delay. I had to set up -CURRENT on this box as it looks like it 
will be handy to test these Radeons from time to time.
-- 
Matt Dawson

matt at chronos.org.uk
MTD15-RIPE