Vesafb and mtrr confusion

From: Niel Lambrechts
Date: Thu Jun 24 2004 - 14:32:30 EST

Hi,

I am using intel-agp for Intel 855PM chipset on a Thinkpad R50P, fglrx
for FireGL T2-128 graphics and vesafb for my console using kernel
2.6.7-rc3-mm1 on SuSE 9.1.

(I am trying to configure ATI's fglrx driver, and although my error-logs
are clean, 3d still does not work)

vesafb seems to confuse /proc/mtrr:
AT STARTUP:
>cat /proc/mtrr
reg00: base=0x00000000 (   0MB), size= 512MB: write-back, count=1
reg01: base=0x1ff80000 ( 511MB), size= 512KB: uncachable, count=1
reg02: base=0xe0000000 (3584MB), size= 2MB: write-combining, count=1

If my info is correct, reg02 represents the video card memory - and some
posts speculate this field to be wrong, as the FireGL T2 has 128 MB of
video memory, not 2 MB:
> cat /var/log/XFree86.0.log|grep ATI|grep PCI   
#illustrate videocard mem. address
(--) PCI:*(1:0:0) ATI Technologies Inc unknown chipset (0x4e54) rev 128,
Mem @ 0xe0000000/27, 0xc0100000/16, I/O @ 0x3000/8

FIX:
> echo "disable=2" >| /proc/mtrr
> echo "base=0xe0000000 size=0x8000000 type=write-combining" >|
/proc/mtrr

#0x8000000 = 128MB

AFTER STARTING X (are these values ok?):
>cat /proc/mtrr
reg00: base=0x00000000 (   0MB), size= 512MB: write-back, count=1
reg01: base=0x1ff80000 ( 511MB), size= 512KB: uncachable, count=1
reg02: base=0xe0000000 (3584MB), size= 128MB: write-combining, count=1
reg03: base=0xd0000000 (3328MB), size= 256MB: write-combining, count=1

#reg00 = ?
#reg01 = ?
#reg02 = video card
#reg03 = AGP I think

Maybe this is significant?
1. dmesg when I quit X:
 -----------------------------------------
| mtrr: no MTRR for e0000000,400000 found |
| mtrr: no MTRR for e0400000,200000 found |
| mtrr: no MTRR for e0600000,100000 found |
 -----------------------------------------

Other symptoms:
- glxinfo shows "Direct Rendering = no", although DRI loads ok in the X
log.
- fgl_glxgears and glxgears runs at measly rates (+-220FPS)
- lsmod shows fglrx usage count = 7, intel-agp usage count = 1. (seems
too low!)

To me, it does not seem as if the fglrx driver is using intel-agp, could
the /proc/mtrr have any role in this? (intel-agp usage count stays 1 all
the time)

Any info would be appreciated, I have wasted days on this, also tried
2.6.5-7.75-default from SuSE with similar results....

Regards,
Niel

Other info:
RPM Packages used:
fglrx-3.9.0-2.1
km_fglrx-3.9.0-2.1

> lspci -v
0000:00:00.0 Host bridge: Intel Corp. 82855PM Processor to I/O
Controller (rev 03)
    Subsystem: IBM: Unknown device 0529
    Flags: bus master, fast devsel, latency 0
    Memory at d0000000 (32-bit, prefetchable)
    Capabilities: [e4] #09 [4104]
    Capabilities: [a0] AGP version 2.0

0000:00:01.0 PCI bridge: Intel Corp. 82855PM Processor to AGP Controller
(rev 03) (prog-if 00 [Normal decode])
    Flags: bus master, 66Mhz, fast devsel, latency 96
    Bus: primary=00, secondary=01, subordinate=01, sec-latency=64
    I/O behind bridge: 00003000-00003fff
    Memory behind bridge: c0100000-c01fffff
    Prefetchable memory behind bridge: e0000000-e7ffffff
    Expansion ROM at 00003000 [disabled] [size=4K]

0000:00:1d.0 USB Controller: Intel Corp. 82801DB USB (Hub #1) (rev 01)
(prog-if 00 [UHCI])
    Subsystem: IBM: Unknown device 052d
    Flags: bus master, medium devsel, latency 0, IRQ 11
    I/O ports at 1800 [size=32]

0000:00:1d.1 USB Controller: Intel Corp. 82801DB USB (Hub #2) (rev 01)
(prog-if 00 [UHCI])
    Subsystem: IBM: Unknown device 052d
    Flags: bus master, medium devsel, latency 0, IRQ 11
    I/O ports at 1820 [size=32]

0000:00:1d.2 USB Controller: Intel Corp. 82801DB USB (Hub #3) (rev 01)
(prog-if 00 [UHCI])
    Subsystem: IBM: Unknown device 052d
    Flags: bus master, medium devsel, latency 0, IRQ 11
    I/O ports at 1840 [size=32]

0000:00:1d.7 USB Controller: Intel Corp. 82801DB USB2 (rev 01) (prog-if
20 [EHCI])
    Subsystem: IBM: Unknown device 052e
    Flags: bus master, medium devsel, latency 0, IRQ 11
    Memory at c0000000 (32-bit, non-prefetchable)
    Capabilities: [50] Power Management version 2
    Capabilities: [58] #0a [2080]

0000:00:1e.0 PCI bridge: Intel Corp. 82801BAM/CAM PCI Bridge (rev 81)
(prog-if 00 [Normal decode])
    Flags: bus master, fast devsel, latency 0
    Bus: primary=00, secondary=02, subordinate=08, sec-latency=168
    I/O behind bridge: 00004000-00008fff
    Memory behind bridge: c0200000-cfffffff
    Prefetchable memory behind bridge: e8000000-efffffff

0000:00:1f.0 ISA bridge: Intel Corp. 82801DBM LPC Interface Controller
(rev 01)
    Flags: bus master, medium devsel, latency 0

0000:00:1f.1 IDE interface: Intel Corp. 82801DBM Ultra ATA Storage
Controller (rev 01) (prog-if 8a [Master SecP PriP])
    Subsystem: IBM: Unknown device 052d
    Flags: bus master, medium devsel, latency 0, IRQ 11
    I/O ports at <unassigned>
    I/O ports at <unassigned>
    I/O ports at <unassigned>
    I/O ports at <unassigned>
    I/O ports at 1860 [size=16]
    Memory at 20000000 (32-bit, non-prefetchable) [size=1K]

0000:00:1f.3 SMBus: Intel Corp. 82801DB/DBM SMBus Controller (rev 01)
    Subsystem: IBM: Unknown device 052d
    Flags: medium devsel, IRQ 5
    I/O ports at 1880 [size=32]

0000:00:1f.5 Multimedia audio controller: Intel Corp. 82801DB AC'97
Audio Controller (rev 01)
    Subsystem: IBM: Unknown device 0554
    Flags: bus master, medium devsel, latency 0, IRQ 5
    I/O ports at 1c00
    I/O ports at 18c0 [size=64]
    Memory at c0000c00 (32-bit, non-prefetchable) [size=512]
    Memory at c0000800 (32-bit, non-prefetchable) [size=256]
    Capabilities: [50] Power Management version 2

0000:00:1f.6 Modem: Intel Corp. 82801DB AC'97 Modem Controller (rev 01)
(prog-if 00 [Generic])
    Subsystem: IBM: Unknown device 0525
    Flags: medium devsel, IRQ 5
    I/O ports at 2400
    I/O ports at 2000 [size=128]
    Capabilities: [50] Power Management version 2

0000:01:00.0 VGA compatible controller: ATI Technologies Inc: Unknown
device 4e54 (rev 80) (prog-if 00 [VGA])
    Subsystem: IBM: Unknown device 054f
    Flags: bus master, fast Back2Back, 66Mhz, medium devsel, latency 66,
IRQ 11
    Memory at e0000000 (32-bit, prefetchable)
    I/O ports at 3000 [size=256]
    Memory at c0100000 (32-bit, non-prefetchable) [size=64K]
    Capabilities: [58] AGP version 2.0
    Capabilities: [50] Power Management version 2

0000:02:00.0 CardBus bridge: Texas Instruments: Unknown device ac46 (rev
01)
    Subsystem: IBM: Unknown device 0552
    Flags: bus master, medium devsel, latency 168, IRQ 11
    Memory at b0000000 (32-bit, non-prefetchable)
    Bus: primary=02, secondary=03, subordinate=06, sec-latency=176
    Memory window 0: 20400000-207ff000 (prefetchable)
    Memory window 1: 20800000-20bff000
    I/O window 0: 00004000-000040ff
    I/O window 1: 00004400-000044ff
    16-bit legacy interface ports at 03e1

0000:02:00.1 CardBus bridge: Texas Instruments: Unknown device ac46 (rev
01)
    Subsystem: IBM: Unknown device 0552
    Flags: bus master, medium devsel, latency 168, IRQ 5
    Memory at b1000000 (32-bit, non-prefetchable)
    Bus: primary=02, secondary=07, subordinate=0a, sec-latency=176
    Memory window 0: 20c00000-20fff000 (prefetchable)
    Memory window 1: 21000000-213ff000
    I/O window 0: 00004800-000048ff
    I/O window 1: 00004c00-00004cff
    16-bit legacy interface ports at 03e1

0000:02:01.0 Ethernet controller: Intel Corp. 82540EP Gigabit Ethernet
Controller (Mobile) (rev 03)
    Subsystem: IBM: Unknown device 0549
    Flags: bus master, 66Mhz, medium devsel, latency 64, IRQ 11
    Memory at c0220000 (32-bit, non-prefetchable)
    Memory at c0200000 (32-bit, non-prefetchable) [size=64K]
    I/O ports at 8000 [size=64]
    Capabilities: [dc] Power Management version 2
    Capabilities: [f0] Message Signalled Interrupts: 64bit+ Queue=0/0
Enable-

0000:02:02.0 Ethernet controller: Unknown device 168c:1014 (rev 01)
    Subsystem: Unknown device 17ab:8331
    Flags: bus master, medium devsel, latency 80, IRQ 11
    Memory at c0210000 (32-bit, non-prefetchable)
    Capabilities: [44] Power Management version 2

VesaFB:
vesafb: framebuffer at 0xe0000000, mapped to 0xe0808000, size 3072k
vesafb: mode is 1024x768x16, linelength=2048, pages=84
vesafb: protected mode interface info at c000:59f1
vesafb: scrolling: redraw
vesafb: directcolor: size=0:5:6:5, shift=0:11:5:0
fb0: VESA VGA frame buffer device

AGP:
Linux agpgart interface v0.100 (c) Dave Jones
agpgart: Detected an Intel 855PM Chipset.
agpgart: Maximum main memory to use for agp memory: 439M
agpgart: AGP aperture is 256M @ 0xd0000000
[fglrx] AGP detected, AgpState   = 0x1f000217 (hardware caps of chipset)

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 0000:01:00.0 into 4x mode
[fglrx] AGP enabled,  AgpCommand = 0x1f000314 (selected caps)
[fglrx] free  AGP = 252440576
[fglrx] max   AGP = 252440576
[fglrx] free  LFB = 116391936
[fglrx] max   LFB = 116391936
[fglrx] total FB  = 0
[fglrx] total AGP = 65536
mtrr: no MTRR for e0000000,400000 found    #this comes up when I quit X.

mtrr: no MTRR for e0400000,200000 found
mtrr: no MTRR for e0600000,100000 found





-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/