CINXE.COM

<?xml version="1.0" encoding="UTF-8" standalone="yes"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>LKML: Ochal Christophe: Re: Possible bug in amd64-agp (agpgart module)</title><link href="/css/message.css" rel="stylesheet" type="text/css" /><link href="/css/wrap.css" rel="alternate stylesheet" type="text/css" title="wrap" /><link href="/css/nowrap.css" rel="stylesheet" type="text/css" title="nowrap" /><link href="/favicon.ico" rel="shortcut icon" /><script src="/js/simple-calendar.js" type="text/javascript"></script><script src="/js/styleswitcher.js" type="text/javascript"></script><link rel="alternate" type="application/rss+xml" title="lkml.org : last 100 messages" href="/rss.php" /><link rel="alternate" type="application/rss+xml" title="lkml.org : last messages by Ochal Christophe" href="/groupie.php?aid=31112" /><script> var _paq = window._paq = window._paq || []; /* tracker methods like "setCustomDimension" should be called before "trackPageView" */ _paq.push(["setDoNotTrack", true]); _paq.push(["disableCookies"]); _paq.push(['trackPageView']); _paq.push(['enableLinkTracking']); (function() { var u="//m.lkml.org/"; _paq.push(['setTrackerUrl', u+'matomo.php']); _paq.push(['setSiteId', '1']); var d=document, g=d.createElement('script'), s=d.getElementsByTagName('script')[0]; g.async=true; g.src=u+'matomo.js'; s.parentNode.insertBefore(g,s); })(); </script></head><body onload="es.jasper.simpleCalendar.init();" itemscope="itemscope" itemtype="http://schema.org/BlogPosting"><table border="0" cellpadding="0" cellspacing="0"><tr><td width="180" align="center"><a href="/"><img style="border:0;width:135px;height:32px" src="/images/toprowlk.gif" alt="lkml.org" /></a></td><td width="32">聽</td><td class="nb"><div><a class="nb" href="/lkml"> [lkml]</a> 聽 <a class="nb" href="/lkml/2005"> [2005]</a> 聽 <a class="nb" href="/lkml/2005/12"> [Dec]</a> 聽 <a class="nb" href="/lkml/2005/12/31"> [31]</a> 聽 <a class="nb" href="/lkml/last100"> [last100]</a> 聽 <a href="/rss.php"><img src="/images/rss-or.gif" border="0" alt="RSS Feed" /></a></div><div>Views: <a href="#" class="nowrap" onclick="setActiveStyleSheet('wrap');return false;">[wrap]</a><a href="#" class="wrap" onclick="setActiveStyleSheet('nowrap');return false;">[no wrap]</a> 聽 <a class="nb" href="/lkml/mheaders/2005/12/31/88" onclick="this.href='/lkml/headers'+'/2005/12/31/88';">[headers]</a>聽 <a href="/lkml/bounce/2005/12/31/88">[forward]</a>聽 </div></td><td width="32">聽</td></tr><tr><td valign="top"><div class="es-jasper-simpleCalendar" baseurl="/lkml/"></div><div class="threadlist">Messages in this thread</div><ul class="threadlist"><li class="root"><a href="/lkml/2005/12/30/42">First message in thread</a></li><li><a href="/lkml/2005/12/30/42">Ochal Christophe</a><ul><li class="origin"><a href="">Ochal Christophe</a></li></ul></li></ul></td><td width="32" rowspan="2" class="c" valign="top"><img src="/images/icornerl.gif" width="32" height="32" alt="/" /></td><td class="c" rowspan="2" valign="top" style="padding-top: 1em"><table><tr><td><table><tr><td class="lp">Date</td><td class="rp" itemprop="datePublished">Sat, 31 Dec 2005 18:13:43 +0100</td></tr><tr><td class="lp">From</td><td class="rp" itemprop="author">Ochal Christophe <></td></tr><tr><td class="lp">Subject</td><td class="rp" itemprop="name">Re: Possible bug in amd64-agp (agpgart module)</td></tr></table></td><td></td></tr></table><pre itemprop="articleBody">Hi all, Some more info regarding my uphill battle with my machine :) Ochal Christophe wrote: > Hi all, > > Sorry for the intrusion, but i think i've stumbled across a bug in the > linux kernel. > On an Asus KV8-S XE motherboard, the agpgart module is unable to > properly determine the AGP aperture size, regardless of bios options > (AGP 8x mode & AGP 4x mode), this *might* also be related to possible > hangs in X11 when using DRI. > > Bug was seen on the following config: > > Asus K8V-S XE motherboard, 512MB ram with AMD Sempron 3200 (Athlon64 > core) > Witnessed with an ATI Radeon 9700 Pro card and with an Asus Radeon > 9200 SE. > > I'll try & test this config with some more gfx cards to see if the gfx > card has any influence on the detection, but i'm not sure i have any > nVidia cards available. > > This phenomenon has been found in atleast the following kernel versions: > > linux 2.6.12-r9 > linux 2.6.14-r4 > linux 2.6.14-r5 > linux 2.6.14-r7 > > The reported aperture size is always 32M, more details can be > provided, just ask what you need to know. Some more info, might be worthwhile for the people in the know: Motherboard: Asus K8V-X SE lspci: 00:00.0 Host bridge: VIA Technologies, Inc. K8T800Pro Host Bridge 00:00.1 Host bridge: VIA Technologies, Inc. K8T800Pro Host Bridge 00:00.2 Host bridge: VIA Technologies, Inc. K8T800Pro Host Bridge 00:00.3 Host bridge: VIA Technologies, Inc. K8T800Pro Host Bridge 00:00.4 Host bridge: VIA Technologies, Inc. K8T800Pro Host Bridge 00:00.7 Host bridge: VIA Technologies, Inc. K8T800Pro Host Bridge 00:01.0 PCI bridge: VIA Technologies, Inc. VT8237 PCI bridge [K8T800/K8T890 South] 00:0f.0 RAID bus controller: VIA Technologies, Inc. VIA VT6420 SATA RAID Controller (rev 80) 00:0f.1 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06) 00:10.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 81) 00:10.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 81) 00:10.2 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 81) 00:10.3 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 81) 00:10.4 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 86) 00:11.0 ISA bridge: VIA Technologies, Inc. VT8237 ISA bridge [KT600/K8T800/K8T890 South] 00:11.5 Multimedia audio controller: VIA Technologies, Inc. VT8233/A/8235/8237 AC97 Audio Controller (rev 60) 00:12.0 Ethernet controller: VIA Technologies, Inc. VT6102 [Rhine-II] (rev 78) 00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration 00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map 00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller 00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control 01:00.0 VGA compatible controller: ATI Technologies Inc Radeon R300 ND [Radeon 9700 Pro] 01:00.1 Display controller: ATI Technologies Inc Radeon R300 [Radeon 9700 Pro] (Secondary) Distribution: Gentoo with kernel: 2.6.13-gentoo-r5 Problem witnessed with multiple kernels (see prior post), regardless of BIOS settings. Test results of testgart.c: localhost ochal # ./test version: 0.101 bridge id: 0x2821106 agp_mode: 0x1f000a1b aper_base: 0xe4000000 aper_size: 32 pg_total: 112384 pg_system: 112384 pg_used: 0 entry.key : 0 entry.key : 1 Allocated 8 megs of GART memory MemoryBenchmark: 8 mb/s MemoryBenchmark: 8 mb/s MemoryBenchmark: 9 mb/s Average speed: 8 mb/s Testing data integrity (1st pass): failed on first pass! Testing data integrity (2nd pass): failed on second pass! dmesg: Linux agpgart interface v0.101 (c) Dave Jones fglrx: module license 'Proprietary. (C) 2002 - ATI Technologies, Starnberg, GERMANY' taints kernel. [fglrx] Maximum main memory to use for locked dma buffers: 430 MBytes. ACPI: PCI Interrupt 0000:01:00.0[A] -> GSI 16 (level, low) -> IRQ 201 [fglrx] module loaded - fglrx 8.20.8 [Dec 6 2005] on minor 0 [fglrx] ACPI power management is initialized. Fire GL agpgart support fglrx_agp is probing for an AGP device Device found = 1106 failed pci_module_init Unloading fglrx_agp firegl_agp_probe failed [fglrx] Failed to load fglrx_agp module [fglrx] Error code 256 [fglrx] Failed to load ATI module agpgart [fglrx] Fallback to internal agpgart module Fire GL built-in AGP-support Based on agpgart interface v0.99 (c) Jeff Hartmann agpgart: Maximum main memory to use for agp memory: 439M agpgart: Unsupported Via chipset (device id: 0282), you might want to try agp_try_unsupported=1. agpgart: no supported devices found. [fglrx] Initialization of built-in AGP-support failed (ret=-19). [fglrx:firegl_unlock] *ERROR* Process 5366 using kernel context 0 scsi: unknown opcode 0xe9 scsi: unknown opcode 0xed scsi: unknown opcode 0x01 scsi: unknown opcode 0xf5 hda: packet command error: status=0x51 { DriveReady SeekComplete Error } hda: packet command error: error=0x54 { AbortedCommand LastFailedSense=0x05 } ide: failed opcode was: unknown hda: packet command error: status=0x51 { DriveReady SeekComplete Error } hda: packet command error: error=0x54 { AbortedCommand LastFailedSense=0x05 } ide: failed opcode was: unknown agpgart: Detected AGP bridge 0 agpgart: AGP aperture is 32M @ 0xe4000000 agpgart: Found an AGP 3.0 compliant device at 0000:00:00.0. agpgart: test tried to set rate=x12. Setting to AGP3 x8 mode. agpgart: Putting AGP V3 device at 0000:00:00.0 into 8x mode agpgart: Putting AGP V3 device at 0000:01:00.0 into 8x mode agpgart: Found an AGP 3.0 compliant device at 0000:00:00.0. agpgart: test tried to set rate=x12. Setting to AGP3 x8 mode. agpgart: Putting AGP V3 device at 0000:00:00.0 into 8x mode agpgart: Putting AGP V3 device at 0000:01:00.0 into 8x mode The testgart.c code: /* * * Test program for AGPGART module under Linux * * Copyright (C) 1999 Jeff Hartmann, * Precision Insight, Inc., Xi Graphics, Inc. * */ #include <stdio.h> #include <unistd.h> #include <sys/ioctl.h> #include <fcntl.h> #include <sys/mman.h> #include <sys/time.h> #include <linux/types.h> #include <linux/agpgart.h> #include <asm/mtrr.h> #include <errno.h> unsigned char *gart; int gartfd; int mtrr; int usec( void ) { struct timeval tv; struct timezone tz; gettimeofday( &tv, &tz ); return (tv.tv_sec & 2047) * 1000000 + tv.tv_usec; } int MemoryBenchmark( void *buffer, int dwords ) { int i; int start, end; int mb; int *base; base = (int *)buffer; start = usec(); for ( i = 0 ; i < dwords ; i += 8 ) { base[i] = base[i+1] = base[i+2] = base[i+3] = base[i+4] = base[i+5] = base[i+6] = base[i+7] = 0x15151515; /* dmapad nops */ } end = usec(); mb = ( (float)dwords / 0x40000 ) * 1000000 / (end - start); printf("MemoryBenchmark: %i mb/s\n", mb ); return mb; } int insert_gart(int page, int size) { agp_allocate entry; agp_bind bind; entry.type = 0; entry.pg_count = size; #ifdef DEBUG printf("Using AGPIOC_ALLOCATE\n"); #endif if(ioctl(gartfd, AGPIOC_ALLOCATE, &entry) != 0) { perror("ioctl(AGPIOC_ALLOCATE)"); exit(1); } bind.key = entry.key; bind.pg_start = page; #ifdef DEBUG printf("Using AGPIOC_BIND\n"); #endif if(ioctl(gartfd, AGPIOC_BIND, &bind)) { perror("ioctl(AGPIOC_BIND)"); exit(1); } printf("entry.key : %i\n", entry.key); return(entry.key); } int unbind_gart(int key) { agp_unbind unbind; unbind.key = key; #ifdef DEBUG printf("Using AGPIOC_UNBIND\n"); #endif if(ioctl(gartfd, AGPIOC_UNBIND, &unbind) != 0) { perror("ioctl(AGPIOC_UNBIND)"); exit(1); } return(0); } int bind_gart(int key, int page) { agp_bind bind; bind.key = key; bind.pg_start = page; #ifdef DEBUG printf("Using AGPIOC_BIND\n"); #endif if(ioctl(gartfd, AGPIOC_BIND, &bind) != 0) { perror("ioctl(AGPIOC_BIND)"); exit(1); } return(0); } int remove_gart(int key) { #ifdef DEBUG printf("Using AGPIOC_DEALLOCATE\n"); #endif if(ioctl(gartfd, AGPIOC_DEALLOCATE, key) != 0) { perror("ioctl(GARTIOCREMOVE)"); exit(1); } return(0); } void openmtrr(void) { if ((mtrr = open("/proc/mtrr", O_WRONLY, 0)) == -1) { if (errno == ENOENT) { perror("/proc/mtrr not found: MTRR not enabled\n"); } else { perror("Error opening /proc/mtrr:"); perror("MTRR not enabled\n"); exit(1); } return; } } int CoverRangeWithMTRR( int base, int range, int type ) { int count; /* set it if we aren't just checking the number */ if ( type != -1 ) { struct mtrr_sentry sentry; sentry.base = base; sentry.size = range; sentry.type = type; if ( ioctl(mtrr, MTRRIOC_ADD_ENTRY, &sentry) == -1 ) { perror("mtrr"); exit(1); } } } int init_agp(void) { agp_info info; agp_setup setup; #ifdef DEBUG printf("Using AGPIOC_ACQUIRE\n"); #endif if(ioctl(gartfd, AGPIOC_ACQUIRE) != 0) { perror("ioctl(AGPIOC_ACQUIRE)"); exit(1); } #ifdef DEBUG printf("Using AGPIOC_INFO\n"); #endif if(ioctl(gartfd, AGPIOC_INFO, &info) != 0) { perror("ioctl(AGPIOC_INFO)"); exit(1); } printf("version: %i.%i\n", info.version.major, info.version.minor); printf("bridge id: 0x%lx\n", info.bridge_id); printf("agp_mode: 0x%lx\n", info.agp_mode); printf("aper_base: 0x%lx\n", info.aper_base); printf("aper_size: %i\n", info.aper_size); printf("pg_total: %i\n", info.pg_total); printf("pg_system: %i\n", info.pg_system); printf("pg_used: %i\n", info.pg_used); openmtrr(); if (mtrr != -1) { CoverRangeWithMTRR(info.aper_base, info.aper_size * 0x100000, MTRR_TYPE_WRCOMB); } gart = mmap(NULL, info.aper_size * 0x100000, PROT_READ | PROT_WRITE, MAP_SHARED, gartfd, 0); if(gart == (unsigned char *) 0xffffffff) { perror("mmap"); close(gartfd); exit(1); } setup.agp_mode = info.agp_mode; #ifdef DEBUG printf("Using AGPIOC_SETUP\n"); #endif if(ioctl(gartfd, AGPIOC_SETUP, &setup) != 0) { perror("ioctl(AGPIOC_SETUP)"); exit(1); } return(0); } int xchangeDummy; void FlushWriteCombining( void ) { __asm__ volatile( " push %%eax ; xchg %%eax, %0 ; pop %%eax" : : "m" (xchangeDummy)); __asm__ volatile( " push %%eax ; push %%ebx ; push %%ecx ; push %%edx ; movl $0,%%eax ; cpuid ; pop %%edx ; pop %%ecx ; pop %%ebx ; pop %%eax" : /* no outputs */ : /* no inputs */ ); } void BenchMark() { int i, worked = 1; i = MemoryBenchmark(gart, (1024 * 1024 * 4) / 4) + MemoryBenchmark(gart, (1024 * 1024 * 4) / 4) + MemoryBenchmark(gart, (1024 * 1024 * 4) / 4); printf("Average speed: %i mb/s\n", i /3); printf("Testing data integrity (1st pass): "); fflush(stdout); FlushWriteCombining(); for (i=0; i < 8 * 0x100000; i++) { gart[i] = i % 256; } FlushWriteCombining(); for (i=0; i < 8 * 0x100000; i++) { if(!(gart[i] == i % 256)) { #ifdef DEBUG printf("failed on %i, gart[i] = %i\n", i, gart[i]); #endif worked = 0; } } if (!worked) printf("failed on first pass!\n"); else printf("passed on first pass.\n"); unbind_gart(0); unbind_gart(1); bind_gart(0, 0); bind_gart(1, 1024); worked = 1; printf("Testing data integrity (2nd pass): "); fflush(stdout); for (i=0; i < 8 * 0x100000; i++) { if(!(gart[i] == i % 256)) { #ifdef DEBUG printf("failed on %i, gart[i] = %i\n", i, gart[i]); #endif worked = 0; } } if (!worked) printf("failed on second pass!\n"); else printf("passed on second pass.\n"); } int main() { int i; int key; int key2; agp_info info; gartfd = open("/dev/agpgart", O_RDWR); if (gartfd == -1) { perror("open"); exit(1); } init_agp(); key = insert_gart(0, 1024); key2 = insert_gart(1024, 1024); #ifdef DEBUG printf("Using AGPIOC_INFO\n"); if(ioctl(gartfd, AGPIOC_INFO, &info) != 0) { perror("ioctl(AGPIOC_INFO)"); exit(1); } printf("version: %i.%i\n", info.version.major, info.version.minor); printf("bridge id: 0x%lx\n", info.bridge_id); printf("agp_mode: 0x%lx\n", info.agp_mode); printf("aper_base: 0x%lx\n", info.aper_base); printf("aper_size: %i\n", info.aper_size); printf("pg_total: %i\n", info.pg_total); printf("pg_system: %i\n", info.pg_system); printf("pg_used: %i\n", info.pg_used); #endif printf("Allocated 8 megs of GART memory\n"); BenchMark(); remove_gart(key); remove_gart(key2); #ifdef DEBUG printf("Using AGPIOC_RELEASE\n"); #endif if(ioctl(gartfd, AGPIOC_RELEASE) != 0) { perror("ioctl(AGPIOC_RELEASE)"); exit(1); } close(gartfd); } I don't know how correct this test program is, i'm willing to test the hell out of this. - 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 <a href="http://vger.kernel.org/majordomo-info.html">http://vger.kernel.org/majordomo-info.html</a> Please read the FAQ at <a href="http://www.tux.org/lkml/">http://www.tux.org/lkml/</a> </pre></td><td width="32" rowspan="2" class="c" valign="top"><img src="/images/icornerr.gif" width="32" height="32" alt="\" /></td></tr><tr><td align="right" valign="bottom"> 聽 </td></tr><tr><td align="right" valign="bottom">聽</td><td class="c" valign="bottom" style="padding-bottom: 0px"><img src="/images/bcornerl.gif" width="32" height="32" alt="\" /></td><td class="c">聽</td><td class="c" valign="bottom" style="padding-bottom: 0px"><img src="/images/bcornerr.gif" width="32" height="32" alt="/" /></td></tr><tr><td align="right" valign="top" colspan="2"> 聽 </td><td class="lm">Last update: 2005-12-31 17:16 聽聽 [from the cache] 漏2003-2020 <a href="http://blog.jasper.es/">Jasper Spaans</a>|hosted at <a href="https://www.digitalocean.com/?refcode=9a8e99d24cf9">Digital Ocean</a> and my Meterkast|<a href="http://blog.jasper.es/categories.html#lkml-ref">Read the blog</a></td><td>聽</td></tr></table><script language="javascript" src="/js/styleswitcher.js" type="text/javascript"></script></body></html>