Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261950AbTEVPeC (ORCPT ); Thu, 22 May 2003 11:34:02 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261969AbTEVPeB (ORCPT ); Thu, 22 May 2003 11:34:01 -0400 Received: from greenie.frogspace.net ([64.6.248.2]:5788 "EHLO greenie.frogspace.net") by vger.kernel.org with ESMTP id S261950AbTEVPd4 (ORCPT ); Thu, 22 May 2003 11:33:56 -0400 Date: Thu, 22 May 2003 08:46:45 -0700 (PDT) From: Peter X-X-Sender: cogwepeter@greenie.frogspace.net To: linux-kernel@vger.kernel.org Subject: DMA gone on ALI 1533 Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 5947 Lines: 168 The 2.5.69 kernel kicks butt -- Debian is now releasing a version in sid and it runs stable on my vpr matrix 205A laptop. What works: nfs, samba, v4l, the nVidia driver (patched), everything I've tested so far. And sound -- the ALSA sound is great (headphone jack still dead). ACPI now detects my battery, and I'm working on software suspend. The ALI chipset (1671 northbridge, 1533 ISA bridge, 5229 IDE interface, 7101 bridge) gives me DMA 33 with 2.4.20: hda: 78140160 sectors (40008 MB) w/1768KiB Cache, CHS=4864/255/63, UDMA(33) but no dma with 2.5.69. Timing buffered disk reads now come in at 3.17MB/s -- in 2.4.20 I get 19.88 MB/sec. hdparm gives part number IC25N040ATCS04-0, a Travelstar 40GN, which I believe supports a 100MHz bus. The "idebus=66" never made a difference afaict. Aside from the slower harddrive (see details below), I've had no issues with this kernel. Is there a workaround for the dma, or something I'm missing? Incidentally, it would be handy to have a bit more information in dmesg, along the lines of the 2.4 kernel -- chipset, dma and bus speed per drive. Cheers, Peter dmesg 2.5.69: Kernel command line: root=/dev/hda5 ro hdc=scsi idebus=66 resume=/dev/hda6 ide_setup: hdc=scsi ide_setup: idebus=66 No local APIC present or hardware disabled PCI: PCI BIOS revision 2.10 entry at 0xfd88e, last bus=1 PCI: Using configuration type 1 PCI: Using ACPI for IRQ routing PCI: if you experience problems, try using option 'pci=noacpi' or even 'acpi=off' Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2 ide: Assuming 66MHz system bus speed for PIO modes hda: IC25N040ATCS04-0, ATA DISK drive hdc: MATSHITACD-RW CW-8121, ATAPI CD/DVD-ROM drive ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 ide1 at 0x170-0x177,0x376 on irq 15 hda: host protected area => 1 hda: 78140160 sectors (40008 MB) w/1768KiB Cache, CHS=77520/16/63 hda: hda1 hda2 < hda5 hda6 hda7 > hda3 hda4 ide-cd: passing drive hdc to ide-scsi emulation. hdparm -i claims to be using dma5: hdparm -i /dev/hda /dev/hda: Model=IC25N040ATCS04-0, FwRev=CA4OA71A, SerialNo=CSH405DCLW5UVB Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs } RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4 BuffType=DualPortCache, BuffSize=1768kB, MaxMultSect=16, MultSect=off CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=78140160 IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120} PIO modes: pio0 pio1 pio2 pio3 pio4 DMA modes: mdma0 mdma1 mdma2 UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5 AdvancedPM=yes: mode=0x80 (128) WriteCache=enabled Drive conforms to: ATA/ATAPI-5 T13 1321D revision 3: 2 3 4 5 In contrast, hdparm /dev/hda claims dma is off: # hdparm /dev/hda /dev/hda: multcount = 0 (off) IO_support = 0 (default 16-bit) unmaskirq = 0 (off) using_dma = 0 (off) keepsettings = 0 (off) readonly = 0 (off) readahead = 256 (on) geometry = 11984/16/63, sectors = 78140160, start = 0 The disk read speed in 2.5.69 indicates dma is off: # hdparm -tT /dev/hda /dev/hda: Timing buffer-cache reads: 128 MB in 0.46 seconds =280.74 MB/sec Timing buffered disk reads: 64 MB in 20.18 seconds = 3.17 MB/sec # cat kernel-2.5.69.config | grep DMA CONFIG_GENERIC_ISA_DMA=y CONFIG_BLK_DEV_IDEDMA_PCI=y # CONFIG_BLK_DEV_IDEDMA_FORCED is not set CONFIG_IDEDMA_PCI_AUTO=y # CONFIG_IDEDMA_ONLYDISK is not set CONFIG_BLK_DEV_IDEDMA=y # CONFIG_IDEDMA_PCI_WIP is not set CONFIG_BLK_DEV_ADMA=y CONFIG_IDEDMA_AUTO=y # CONFIG_IDEDMA_IVB is not set # CONFIG_IEEE1394_SBP2_PHYS_DMA is not set Here's what 2.4.20 produces: Uniform Multi-Platform E-IDE driver Revision: 6.31 ide: Assuming 66MHz system bus speed for PIO modes ALI15X3: IDE controller on PCI bus 00 dev 80 PCI: No IRQ known for interrupt pin A of device 00:10.0. ALI15X3: chipset revision 196 ALI15X3: not 100% native mode: will probe irqs later ide0: BM-DMA at 0x1840-0x1847, BIOS settings: hda:DMA, hdb:pio ide1: BM-DMA at 0x1848-0x184f, BIOS settings: hdc:pio, hdd:pio hda: IC25N040ATCS04-0, ATA DISK drive hdc: MATSHITACD-RW CW-8121, ATAPI CD/DVD-ROM drive ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 ide1 at 0x170-0x177,0x376 on irq 15 blk: queue c0335ee4, I/O limit 4095Mb (mask 0xffffffff) hda: 78140160 sectors (40008 MB) w/1768KiB Cache, CHS=4864/255/63, UDMA(33) Disk information under 2.4.20 -- claims to be using dma2: Model=IC25N040ATCS04-0, FwRev=CA4OA71A, SerialNo=CSH405DCLW5UVB Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs } RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4 BuffType=DualPortCache, BuffSize=1768kB, MaxMultSect=16, MultSect=16 CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=78140160 IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120} PIO modes: pio0 pio1 pio2 pio3 pio4 DMA modes: mdma0 mdma1 mdma2 UDMA modes: udma0 udma1 *udma2 udma3 udma4 udma5 AdvancedPM=yes: mode=0x80 (128) WriteCache=enabled Drive conforms to: ATA/ATAPI-5 T13 1321D revision 3: 2 3 4 5 This fits with the disk read speed: Timing buffer-cache reads: 128 MB in 0.44 seconds =290.91 MB/sec Timing buffered disk reads: 64 MB in 3.22 seconds = 19.88 MB/sec cat kernel-2.4.20-5-5.config | grep DMA CONFIG_BLK_DEV_IDEDMA_PCI=y # CONFIG_BLK_DEV_IDEDMA_FORCED is not set CONFIG_IDEDMA_PCI_AUTO=y # CONFIG_IDEDMA_ONLYDISK is not set CONFIG_BLK_DEV_IDEDMA=y # CONFIG_IDEDMA_PCI_WIP is not set # CONFIG_BLK_DEV_IDEDMA_TIMEOUT is not set # CONFIG_IDEDMA_NEW_DRIVE_LISTINGS is not set CONFIG_BLK_DEV_ADMA=y # CONFIG_HPT34X_AUTODMA is not set CONFIG_IDEDMA_AUTO=y # CONFIG_IDEDMA_IVB is not set # CONFIG_DMA_NONPCI is not set # CONFIG_SCSI_EATA_DMA is not set # CONFIG_IEEE1394_SBP2_PHYS_DMA is not set # CONFIG_SOUND_DMAP is not set - 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/