Messages in this thread Patch in this message | | | Date | Mon, 3 Mar 2003 18:00:50 -0500 (EST) | From | Pavel Roskin <> | Subject | Errors in i810 DRM driver, 2.4.21-pre5-ac1 |
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Hello!
When I boot 2.4.21-pre5-ac1 on a system with an i810 card and i810 DRM supported in the kernel, following lines are printed continuously to the kernel log:
PCI: Found IRQ 12 for device 00:01.0 [drm:i810_wait_ring] *ERROR* space: 65520 wanted 65528 [drm:i810_wait_ring] *ERROR* lockup mtrr: base(0xd0000000) is not aligned on a size(0x180000) boundary
The same messages were observed with 2.4.21-pre4-ac7. I haven't tried other -ac kernels on that machine.
The system feels significantly slower. I have X and gdm running, the messages are printed on the serial console. The workaround is to stop X by "init 3" - the messages stop and the system becomes more responsive.
The system is Red Hat 8.0, kernel 2.4.21-pre5-ac1, XFree86-4.2.0-72, gdm-2.4.0.7-13 (two later are native from Red Hat). No modules are loaded.
# /sbin/lspci 00:00.0 Host bridge: Intel Corp. 82810E DC-133 GMCH [Graphics Memory Controller Hub] (rev 03) 00:01.0 VGA compatible controller: Intel Corp. 82810E DC-133 CGC [Chipset Graphics Controller] (rev 03) 00:1e.0 PCI bridge: Intel Corp. 82801AA PCI Bridge (rev 02) 00:1f.0 ISA bridge: Intel Corp. 82801AA ISA Bridge (LPC) (rev 02) 00:1f.1 IDE interface: Intel Corp. 82801AA IDE (rev 02) 00:1f.2 USB Controller: Intel Corp. 82801AA USB (rev 02) 00:1f.3 SMBus: Intel Corp. 82801AA SMBus (rev 02) 00:1f.5 Multimedia audio controller: Intel Corp. 82801AA AC'97 Audio (rev 02) 01:00.0 CardBus bridge: Ricoh Co Ltd RL5c476 II (rev 80) 01:00.1 CardBus bridge: Ricoh Co Ltd RL5c476 II (rev 80) 01:01.0 CardBus bridge: Texas Instruments PCI1410 PC card Cardbus Controller (rev 01) 01:07.0 Ethernet controller: Intel Corp. 82557/8/9 [Ethernet Pro 100] (rev 08)
There is an interesting message when compiling i810_dma.c (most likely irrelevant, but I'll report it anyway):
gcc -D__KERNEL__ -I/usr/src/linux/include -Wall -Wstrict-prototypes -Wno-trigraphs -O2 -fno-strict-aliasing -fno-common -pipe -mpreferred-stack-boundary=2 -march=i686 -nostdinc -iwithprefix include -DKBUILD_BASENAME=i810_dma -c -o i810_dma.o i810_dma.c In file included from drmP.h:75, from i810_dma.c:35: drm_os_linux.h:16:2: warning: #warning the author of this code needs to read up on list_entry
This patch fixes the loop, but it's really just a random fix without understanding anything:
=========================== --- linux.orig/drivers/char/drm/i810_dma.c +++ linux/drivers/char/drm/i810_dma.c @@ -309,7 +309,7 @@ static int i810_wait_ring(drm_device_t * end = jiffies + (HZ*3); while (ring->space < n) { ring->head = I810_READ(LP_RING + RING_HEAD) & HEAD_ADDR; - ring->space = ring->head - (ring->tail+8); + ring->space = ring->head - ring->tail; if (ring->space < 0) ring->space += ring->Size;
if (ring->head != last_head) =========================== Still, the following messages are printed 4 times on startup:
mtrr: base(0xd0000000) is not aligned on a size(0x180000) boundary PCI: Found IRQ 12 for device 00:01.0 -- Regards, Pavel Roskin - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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