* DMA conflicts with soundcard for ide driver via82cxxx
@ 2001-12-28 2:32 Edward Stempel
2001-12-28 9:15 ` Vojtech Pavlik
0 siblings, 1 reply; 10+ messages in thread
From: Edward Stempel @ 2001-12-28 2:32 UTC (permalink / raw)
To: linux-kernel mailinglist; +Cc: Vojtech Pavlik
I have an Asus a7v266 mother board and an Ensoniq sound card in it.
The ide chipset is a VIA VT8233 that is capable of UDMA100. So I built a
kernel with the es1371 sound driver and the via82cxxx ide driver
configured in it. Actually I tried the kernel 2.4.17 first, and the latest
I tried is 4.5.1 with the latest patch (patch-2.5.2-pre3) applied to it.
I also tried the kernel 2.5.1 with Vojtech patch (via-3.33.diff from
his email dated 2001-12-23 23:20:48) applied to it, with the same
(negative) results.
The good thing is that hdparm reports appr. 40 MB/sec when using DMA and
about 6 MB/sec when not using DMA.
Unfortunately using DMA for ide results in some ugly distortion of the
sound from my soundcard whenever some IO to the disk is done. :((
I have assigned different interrupts to the PCI-cards (ide is
on-board) and I even changed the sound card's PCI slot, so it shared
its interrupt with another device (acpi instead of USB). It did not solve
the problem. Because the problem only occurs when switching on using_dma
on the ide driver, I think it is a DMA problem with the ide driver. It may
be the es1371 driver as well off course, but I suspect it is the ide
driver (or chipset).
Reading the list archive from linux-kernel, I discovered there have been
more problems with DMA using this chipset, but I did not find anyone
having the same problem as I have now.
Has someone also dealt with these problems, or can someone help me
solving this problem? Please help!
Below are some outputs using kernel 5.1 with patch-2.5.2-pre3.
Edward
hdparm -vi /dev/hda
/dev/hda:
multcount = 16 (on)
I/O support = 1 (32-bit)
unmaskirq = 1 (on)
using_dma = 1 (on)
keepsettings = 0 (off)
nowerr = 0 (off)
readonly = 0 (off)
readahead = 8 (on)
geometry = 9732/255/63, sectors = 156355584, start = 0
Model=MAXTOR 6L080J4, FwRev=A93.0500, SerialNo=664128115851
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=32256, SectSize=21298, ECCbytes=4
BuffType=DualPortCache, BuffSize=1819kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=-66060037, LBA=yes, LBAsects=156355584
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5 udma6
AdvancedPM=no
Drive Supports : ATA/ATAPI-5 T13 1321D revision 1 : ATA-1 ATA-2 ATA-3
ATA-4 ATA-5
cat /proc/ide/via
----------VIA BusMastering IDE Configuration----------------
Driver Version: 3.33
South Bridge: VIA vt8233
Revision: ISA 0x0 IDE 0x6
Highest DMA rate: UDMA100
BM-DMA base: 0xb800
PCI clock: 33.3MHz
Master Read Cycle IRDY: 0ws
Master Write Cycle IRDY: 0ws
BM IDE Status Register Read Retry: yes
Max DRDY Pulse Width: No limit
-----------------------Primary IDE-------Secondary IDE------
Read DMA FIFO flush: yes yes
End Sector FIFO flush: no no
Prefetch Buffer: yes no
Post Write Buffer: yes no
Enabled: yes yes
Simplex only: no no
Cable Type: 80w 40w
-------------------drive0----drive1----drive2----drive3-----
Transfer Mode: UDMA PIO DMA PIO
Address Setup: 30ns 120ns 30ns 120ns
Cmd Active: 90ns 90ns 90ns 90ns
Cmd Recovery: 30ns 30ns 30ns 30ns
Data Active: 90ns 330ns 90ns 330ns
Data Recovery: 30ns 270ns 30ns 270ns
Cycle Time: 20ns 600ns 120ns 600ns
Transfer Rate: 99.9MB/s 3.3MB/s 16.6MB/s 3.3MB/s
cat /proc/pci
PCI devices found:
Bus 0, device 0, function 0:
Host bridge: VIA Technologies, Inc. VT8367 [KT266] (rev 0).
Prefetchable 32 bit memory at 0xfc000000 [0xfdffffff].
Bus 0, device 1, function 0:
PCI bridge: VIA Technologies, Inc. VT8367 [KT266 AGP] (rev 0).
Master Capable. No bursts. Min Gnt=8.
Bus 0, device 13, function 0:
Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139 (rev
16).
IRQ 11.
Master Capable. Latency=32. Min Gnt=32.Max Lat=64.
I/O at 0xd800 [0xd8ff].
Non-prefetchable 32 bit memory at 0xf8000000 [0xf80000ff].
Bus 0, device 14, function 0:
Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139
(#2) (rev 16).
IRQ 5.
Master Capable. Latency=32. Min Gnt=32.Max Lat=64.
I/O at 0xd400 [0xd4ff].
Non-prefetchable 32 bit memory at 0xf7800000 [0xf78000ff].
Bus 0, device 15, function 0:
Multimedia audio controller: Ensoniq 5880 AudioPCI (rev 2).
IRQ 9.
Master Capable. Latency=32. Min Gnt=12.Max Lat=128.
I/O at 0xd000 [0xd03f].
Bus 0, device 17, function 0:
ISA bridge: VIA Technologies, Inc. VT8233 PCI to ISA Bridge (rev 0).
Bus 0, device 17, function 1:
IDE interface: VIA Technologies, Inc. Bus Master IDE (rev 6).
Master Capable. Latency=32.
I/O at 0xb800 [0xb80f].
Bus 0, device 17, function 2:
USB Controller: VIA Technologies, Inc. UHCI USB (rev 27).
IRQ 10.
Master Capable. Latency=32.
I/O at 0xb400 [0xb41f].
Bus 0, device 17, function 3:
USB Controller: VIA Technologies, Inc. UHCI USB (#2) (rev 27).
IRQ 10.
Master Capable. Latency=32.
I/O at 0xb000 [0xb01f].
Bus 0, device 17, function 4:
USB Controller: VIA Technologies, Inc. UHCI USB (#3) (rev 27).
IRQ 10.
Master Capable. Latency=32.
I/O at 0xa800 [0xa81f].
Bus 1, device 0, function 0:
VGA compatible controller: Matrox Graphics, Inc. MGA G550 AGP (rev 1).
IRQ 11.
Master Capable. Latency=64. Min Gnt=16.Max Lat=32.
Prefetchable 32 bit memory at 0xfa000000 [0xfbffffff].
Non-prefetchable 32 bit memory at 0xf9000000 [0xf9003fff].
Non-prefetchable 32 bit memory at 0xf8800000 [0xf8ffffff].
dmesg:
Linux version 2.5.2-pre3 (edward@snel) (gcc version 2.96 20000731 (Red Hat
Linux 7.1 2.96-98)) #1 Fri Dec 28 01:05:33 CET 2001
BIOS-provided physical RAM map:
BIOS-e820: 0000000000000000 - 000000000009fc00 (usable)
BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved)
BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
BIOS-e820: 0000000000100000 - 000000005ffec000 (usable)
BIOS-e820: 000000005ffec000 - 000000005ffef000 (ACPI data)
BIOS-e820: 000000005ffef000 - 000000005ffff000 (reserved)
BIOS-e820: 000000005ffff000 - 0000000060000000 (ACPI NVS)
BIOS-e820: 00000000ffff0000 - 0000000100000000 (reserved)
639MB HIGHMEM available.
On node 0 totalpages: 393196
zone(0): 4096 pages.
zone(1): 225280 pages.
zone(2): 163820 pages.
Local APIC disabled by BIOS -- reenabling.
Found and enabled local APIC!
Kernel command line: BOOT_IMAGE=linux-2-04 ro root=308
BOOT_FILE=/mnt2/boot/bzImage-2.5.1-snel-04
Initializing CPU#0
Detected 1410.245 MHz processor.
Console: colour VGA+ 80x25
Calibrating delay loop... 2811.49 BogoMIPS
Memory: 1545668k/1572784k available (1242k kernel code, 26728k reserved,
383k data, 216k init, 655280k highmem)
Dentry-cache hash table entries: 262144 (order: 9, 2097152 bytes)
Inode-cache hash table entries: 131072 (order: 8, 1048576 bytes)
Mount-cache hash table entries: 32768 (order: 6, 262144 bytes)
Buffer-cache hash table entries: 131072 (order: 7, 524288 bytes)
Page-cache hash table entries: 524288 (order: 9, 2097152 bytes)
CPU: Before vendor init, caps: 0383fbff c1cbfbff 00000000, vendor = 2
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#0.
CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
CPU: L2 Cache: 256K (64 bytes/line)
CPU: After vendor init, caps: 0383fbff c1cbfbff 00000000 00000000
CPU: After generic, caps: 0383fbff c1cbfbff 00000000 00000000
CPU: Common caps: 0383fbff c1cbfbff 00000000 00000000
CPU: AMD Athlon(tm) Processor stepping 02
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Checking 'hlt' instruction... OK.
POSIX conformance testing by UNIFIX
enabled ExtINT on CPU#0
ESR value before enabling vector: 00000000
ESR value after enabling vector: 00000000
Using local APIC timer interrupts.
calibrating APIC timer ...
..... CPU clock speed is 1410.1515 MHz.
..... host bus clock speed is 268.6001 MHz.
cpu: 0, clocks: 2686001, slice: 1343000
CPU0<T0:2686000,T1:1342992,D:8,S:1343000,C:2686001>
PCI: PCI BIOS revision 2.10 entry at 0xf1780, last bus=1
PCI: Using configuration type 1
PCI: Probing PCI hardware
Unknown bridge resource 0: assuming transparent
PCI: Using IRQ router VIA [1106/3074] at 00:11.0
PCI: Found IRQ 11 for device 00:0d.0
PCI: Sharing IRQ 11 with 01:00.0
isapnp: Scanning for PnP cards...
isapnp: No Plug & Play device found
Linux NET4.0 for Linux 2.4
Based upon Swansea University Computer Society NET3.039
Starting kswapd
highmem bounce pool size: 64 pages
BIO: pool of 256 setup, 14Kb (56 bytes/bio)
biovec: init pool 0, 1 entries, 12 bytes
biovec: init pool 1, 4 entries, 48 bytes
biovec: init pool 2, 16 entries, 192 bytes
biovec: init pool 3, 64 entries, 768 bytes
biovec: init pool 4, 128 entries, 1536 bytes
biovec: init pool 5, 256 entries, 3072 bytes
pty: 256 Unix98 ptys configured
Serial driver version 5.05c (2001-07-08) with MANY_PORTS SHARE_IRQ
SERIAL_PCI enabled
ttyS00 at 0x03f8 (irq = 4) is a 16550A
ttyS01 at 0x02f8 (irq = 3) is a 16550A
kmod: failed to exec /sbin/modprobe -s -k parport_lowlevel, errno = 2
lp: driver loaded but no devices found
block: 256 slots per queue, batch=32
Uniform Multi-Platform E-IDE driver Revision: 6.32
ide: Assuming 33MHz system bus speed for PIO modes; override with
idebus=xx
VP_IDE: IDE controller on PCI slot 00:11.1
VP_IDE: chipset revision 6
VP_IDE: not 100% native mode: will probe irqs later
ide: Assuming 33MHz system bus speed for PIO modes; override with
idebus=xx
VP_IDE: VIA vt8233 (rev 00) IDE UDMA100 controller on pci00:11.1
ide0: BM-DMA at 0xb800-0xb807, BIOS settings: hda:DMA, hdb:pio
ide1: BM-DMA at 0xb808-0xb80f, BIOS settings: hdc:DMA, hdd:pio
hda: MAXTOR 6L080J4, ATA DISK drive
hdc: CD-ROM 52X/AKH, ATAPI CD/DVD-ROM drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15
blk: queue c02ffc64, I/O limit 4095Mb (mask 0xffffffff)
hda: 156355584 sectors (80054 MB) w/1819KiB Cache, CHS=9732/255/63,
UDMA(100)
hdc: ATAPI 52X CD-ROM drive, 192kB Cache, DMA
Uniform CD-ROM driver Revision: 3.12
Partition check:
hda: hda1 hda2 hda3 hda4 < hda5 hda6 hda7 hda8 hda9 >
Floppy drive(s): fd0 is 1.44M
FDC 0 is a post-1991 82077
loop: loaded (max 8 devices)
8139too Fast Ethernet driver 0.9.22
PCI: Enabling device 00:0d.0 (0004 -> 0007)
PCI: Found IRQ 11 for device 00:0d.0
PCI: Sharing IRQ 11 with 01:00.0
eth0: RealTek RTL8139 Fast Ethernet at 0xf8800000, 00:50:fc:3b:4d:69, IRQ
11
eth0: Identified 8139 chip type 'RTL-8139C'
PCI: Enabling device 00:0e.0 (0004 -> 0007)
PCI: Assigned IRQ 5 for device 00:0e.0
eth1: RealTek RTL8139 Fast Ethernet at 0xf8802000, 00:50:fc:44:99:35, IRQ
5
eth1: Identified 8139 chip type 'RTL-8139C'
Linux agpgart interface v0.99 (c) Jeff Hartmann
agpgart: Maximum main memory to use for agp memory: 816M
agpgart: Detected Via Apollo Pro KT266 chipset
agpgart: AGP aperture is 32M @ 0xfc000000
[drm] AGP 0.99 on VIA Apollo KT133 @ 0xfc000000 32MB
[drm] Initialized mga 3.0.2 20010321 on minor 0
es1371: version v0.30 time 01:07:01 Dec 28 2001
PCI: Enabling device 00:0f.0 (0004 -> 0005)
PCI: Assigned IRQ 9 for device 00:0f.0
es1371: found chip, vendor id 0x1274 device id 0x5880 revision 0x02
es1371: found es1371 rev 2 at io 0xd000 irq 9
es1371: features: joystick 0x0
ac97_codec: AC97 codec, id: 0x5452:0x4123 (TriTech TR A5)
Linux Kernel Card Services 3.1.22
options: [pci] [cardbus] [pm]
usb.c: registered new driver hub
uhci.c: USB Universal Host Controller Interface driver v1.1
PCI: Found IRQ 10 for device 00:11.2
PCI: Sharing IRQ 10 with 00:11.3
PCI: Sharing IRQ 10 with 00:11.4
uhci.c: USB UHCI at I/O 0xb400, IRQ 10
usb.c: new USB bus registered, assigned bus number 1
hub.c: USB hub found
hub.c: 2 ports detected
PCI: Found IRQ 10 for device 00:11.3
PCI: Sharing IRQ 10 with 00:11.2
PCI: Sharing IRQ 10 with 00:11.4
uhci.c: USB UHCI at I/O 0xb000, IRQ 10
usb.c: new USB bus registered, assigned bus number 2
hub.c: USB hub found
hub.c: 2 ports detected
PCI: Found IRQ 10 for device 00:11.4
PCI: Sharing IRQ 10 with 00:11.2
PCI: Sharing IRQ 10 with 00:11.3
uhci.c: USB UHCI at I/O 0xa800, IRQ 10
usb.c: new USB bus registered, assigned bus number 3
hub.c: USB hub found
hub.c: 2 ports detected
NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP, IGMP
IP: routing cache hash table of 16384 buckets, 128Kbytes
TCP: Hash tables configured (established 262144 bind 65536)
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
ds: no socket drivers loaded!
VFS: Mounted root (ext2 filesystem) readonly.
Freeing unused kernel memory: 216k freed
Adding Swap: 136512k swap-space (priority -1)
spurious 8259A interrupt: IRQ7.
eth1: Setting 100mbps full-duplex based on auto-negotiated partner ability
41e1.
eth0: Setting half-duplex based on auto-negotiated partner ability 0000.
eth0: Setting half-duplex based on auto-negotiated partner ability 0000.
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: DMA conflicts with soundcard for ide driver via82cxxx
2001-12-28 2:32 DMA conflicts with soundcard for ide driver via82cxxx Edward Stempel
@ 2001-12-28 9:15 ` Vojtech Pavlik
0 siblings, 0 replies; 10+ messages in thread
From: Vojtech Pavlik @ 2001-12-28 9:15 UTC (permalink / raw)
To: Edward Stempel; +Cc: linux-kernel mailinglist
On Fri, Dec 28, 2001 at 03:32:34AM +0100, Edward Stempel wrote:
> I have an Asus a7v266 mother board and an Ensoniq sound card in it.
> The ide chipset is a VIA VT8233 that is capable of UDMA100. So I built a
> kernel with the es1371 sound driver and the via82cxxx ide driver
> configured in it. Actually I tried the kernel 2.4.17 first, and the latest
> I tried is 4.5.1 with the latest patch (patch-2.5.2-pre3) applied to it.
> I also tried the kernel 2.5.1 with Vojtech patch (via-3.33.diff from
> his email dated 2001-12-23 23:20:48) applied to it, with the same
> (negative) results.
>
> The good thing is that hdparm reports appr. 40 MB/sec when using DMA and
> about 6 MB/sec when not using DMA.
> Unfortunately using DMA for ide results in some ugly distortion of the
> sound from my soundcard whenever some IO to the disk is done. :((
>
> I have assigned different interrupts to the PCI-cards (ide is
> on-board) and I even changed the sound card's PCI slot, so it shared
> its interrupt with another device (acpi instead of USB). It did not solve
> the problem. Because the problem only occurs when switching on using_dma
> on the ide driver, I think it is a DMA problem with the ide driver. It may
> be the es1371 driver as well off course, but I suspect it is the ide
> driver (or chipset).
>
> Reading the list archive from linux-kernel, I discovered there have been
> more problems with DMA using this chipset, but I did not find anyone
> having the same problem as I have now.
>
> Has someone also dealt with these problems, or can someone help me
> solving this problem? Please help!
>
> Below are some outputs using kernel 5.1 with patch-2.5.2-pre3.
You may try changing the PCI latency settings on either the IDE
controller or the sound card. Other than that, I don't know how to help.
--
Vojtech Pavlik
SuSE Labs
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: DMA conflicts with soundcard for ide driver via82cxxx
@ 2001-12-28 16:10 Edward Stempel
2002-01-01 17:14 ` Vojtech Pavlik
0 siblings, 1 reply; 10+ messages in thread
From: Edward Stempel @ 2001-12-28 16:10 UTC (permalink / raw)
To: Vojtech Pavlik; +Cc: linux-kernel mailinglist
Excellent! That solved my problem.
Thankx
Edward
Date: Fri, 28 Dec 2001 10:15:05 +0100
From: Vojtech Pavlik <vojtech@suse.cz>
To: Edward Stempel <eazstempel@cal009001.student.utwente.nl>
Cc: linux-kernel mailinglist <linux-kernel@vger.kernel.org>
Subject: Re: DMA conflicts with soundcard for ide driver via82cxxx
On Fri, Dec 28, 2001 at 03:32:34AM +0100, Edward Stempel wrote:
> I have an Asus a7v266 mother board and an Ensoniq sound card in it.
> The ide chipset is a VIA VT8233 that is capable of UDMA100. So I built a
> kernel with the es1371 sound driver and the via82cxxx ide driver
> configured in it. Actually I tried the kernel 2.4.17 first, and the latest
> I tried is 4.5.1 with the latest patch (patch-2.5.2-pre3) applied to it.
> I also tried the kernel 2.5.1 with Vojtech patch (via-3.33.diff from
> his email dated 2001-12-23 23:20:48) applied to it, with the same
> (negative) results.
>
> The good thing is that hdparm reports appr. 40 MB/sec when using DMA and
> about 6 MB/sec when not using DMA.
> Unfortunately using DMA for ide results in some ugly distortion of the
> sound from my soundcard whenever some IO to the disk is done. :((
>
> I have assigned different interrupts to the PCI-cards (ide is
> on-board) and I even changed the sound card's PCI slot, so it shared
> its interrupt with another device (acpi instead of USB). It did not solve
> the problem. Because the problem only occurs when switching on using_dma
> on the ide driver, I think it is a DMA problem with the ide driver. It may
> be the es1371 driver as well off course, but I suspect it is the ide
> driver (or chipset).
>
> Reading the list archive from linux-kernel, I discovered there have been
> more problems with DMA using this chipset, but I did not find anyone
> having the same problem as I have now.
>
> Has someone also dealt with these problems, or can someone help me
> solving this problem? Please help!
>
> Below are some outputs using kernel 5.1 with patch-2.5.2-pre3.
You may try changing the PCI latency settings on either the IDE
controller or the sound card. Other than that, I don't know how to help.
--
Vojtech Pavlik
SuSE Labs
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: DMA conflicts with soundcard for ide driver via82cxxx
2001-12-28 16:10 Edward Stempel
@ 2002-01-01 17:14 ` Vojtech Pavlik
0 siblings, 0 replies; 10+ messages in thread
From: Vojtech Pavlik @ 2002-01-01 17:14 UTC (permalink / raw)
To: Edward Stempel; +Cc: linux-kernel mailinglist
On Fri, Dec 28, 2001 at 05:10:43PM +0100, Edward Stempel wrote:
> Excellent! That solved my problem.
What exactly did you have to change? It might be worth to include the
changing of the latency setting in the kernel.
>
> Thankx
>
> Edward
>
>
>
>
> Date: Fri, 28 Dec 2001 10:15:05 +0100
> From: Vojtech Pavlik <vojtech@suse.cz>
> To: Edward Stempel <eazstempel@cal009001.student.utwente.nl>
> Cc: linux-kernel mailinglist <linux-kernel@vger.kernel.org>
> Subject: Re: DMA conflicts with soundcard for ide driver via82cxxx
>
> On Fri, Dec 28, 2001 at 03:32:34AM +0100, Edward Stempel wrote:
>
> > I have an Asus a7v266 mother board and an Ensoniq sound card in it.
> > The ide chipset is a VIA VT8233 that is capable of UDMA100. So I built a
> > kernel with the es1371 sound driver and the via82cxxx ide driver
> > configured in it. Actually I tried the kernel 2.4.17 first, and the latest
> > I tried is 4.5.1 with the latest patch (patch-2.5.2-pre3) applied to it.
> > I also tried the kernel 2.5.1 with Vojtech patch (via-3.33.diff from
> > his email dated 2001-12-23 23:20:48) applied to it, with the same
> > (negative) results.
> >
> > The good thing is that hdparm reports appr. 40 MB/sec when using DMA and
> > about 6 MB/sec when not using DMA.
> > Unfortunately using DMA for ide results in some ugly distortion of the
> > sound from my soundcard whenever some IO to the disk is done. :((
> >
> > I have assigned different interrupts to the PCI-cards (ide is
> > on-board) and I even changed the sound card's PCI slot, so it shared
> > its interrupt with another device (acpi instead of USB). It did not solve
> > the problem. Because the problem only occurs when switching on using_dma
> > on the ide driver, I think it is a DMA problem with the ide driver. It may
> > be the es1371 driver as well off course, but I suspect it is the ide
> > driver (or chipset).
> >
> > Reading the list archive from linux-kernel, I discovered there have been
> > more problems with DMA using this chipset, but I did not find anyone
> > having the same problem as I have now.
> >
> > Has someone also dealt with these problems, or can someone help me
> > solving this problem? Please help!
> >
> > Below are some outputs using kernel 5.1 with patch-2.5.2-pre3.
>
> You may try changing the PCI latency settings on either the IDE
> controller or the sound card. Other than that, I don't know how to help.
>
> --
> Vojtech Pavlik
> SuSE Labs
--
Vojtech Pavlik
SuSE Labs
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: DMA conflicts with soundcard for ide driver via82cxxx
@ 2002-01-01 22:03 Edward Stempel
2002-01-01 22:20 ` Vojtech Pavlik
0 siblings, 1 reply; 10+ messages in thread
From: Edward Stempel @ 2002-01-01 22:03 UTC (permalink / raw)
To: Vojtech Pavlik; +Cc: linux-kernel mailinglist
In my BIOS-setup there is an option "PCI latency" which defaults to
32. First I changed it to 128. That worked perfect. Later I have decreased
it to 64, 48 and 40. But 40 still gave some problems (a little bit
distortion of my sound). After that I tried 44, but the disk was to slow
with this setting (30 MB/s instead of 40 MB/s). So now I have a PCI
latency of 48. The strange thing is that it seems not to work
directly. After the system boot when I do hdparm -t, I get about 5
MB/s. But then when I switch using_dma off and on again using hdparm, I
get the full 40 MB/s and no distortion of my es1371. Any ideas what might
cause this?
Regards,
Edward
---------- Forwarded message ----------
Date: Tue, 1 Jan 2002 18:14:41 +0100
From: Vojtech Pavlik <vojtech@suse.cz>
To: Edward Stempel <eazstempel@cal009001.student.utwente.nl>
Cc: linux-kernel mailinglist <linux-kernel@vger.kernel.org>
Subject: Re: DMA conflicts with soundcard for ide driver via82cxxx
On Fri, Dec 28, 2001 at 05:10:43PM +0100, Edward Stempel wrote:
> Excellent! That solved my problem.
What exactly did you have to change? It might be worth to include the
changing of the latency setting in the kernel.
>
> Thankx
>
> Edward
>
>
>
>
> Date: Fri, 28 Dec 2001 10:15:05 +0100
> From: Vojtech Pavlik <vojtech@suse.cz>
> To: Edward Stempel <eazstempel@cal009001.student.utwente.nl>
> Cc: linux-kernel mailinglist <linux-kernel@vger.kernel.org>
> Subject: Re: DMA conflicts with soundcard for ide driver via82cxxx
>
> On Fri, Dec 28, 2001 at 03:32:34AM +0100, Edward Stempel wrote:
>
> > I have an Asus a7v266 mother board and an Ensoniq sound card in it.
> > The ide chipset is a VIA VT8233 that is capable of UDMA100. So I built a
> > kernel with the es1371 sound driver and the via82cxxx ide driver
> > configured in it. Actually I tried the kernel 2.4.17 first, and the latest
> > I tried is 4.5.1 with the latest patch (patch-2.5.2-pre3) applied to it.
> > I also tried the kernel 2.5.1 with Vojtech patch (via-3.33.diff from
> > his email dated 2001-12-23 23:20:48) applied to it, with the same
> > (negative) results.
> >
> > The good thing is that hdparm reports appr. 40 MB/sec when using DMA and
> > about 6 MB/sec when not using DMA.
> > Unfortunately using DMA for ide results in some ugly distortion of the
> > sound from my soundcard whenever some IO to the disk is done. :((
> >
> > I have assigned different interrupts to the PCI-cards (ide is
> > on-board) and I even changed the sound card's PCI slot, so it shared
> > its interrupt with another device (acpi instead of USB). It did not solve
> > the problem. Because the problem only occurs when switching on using_dma
> > on the ide driver, I think it is a DMA problem with the ide driver. It may
> > be the es1371 driver as well off course, but I suspect it is the ide
> > driver (or chipset).
> >
> > Reading the list archive from linux-kernel, I discovered there have been
> > more problems with DMA using this chipset, but I did not find anyone
> > having the same problem as I have now.
> >
> > Has someone also dealt with these problems, or can someone help me
> > solving this problem? Please help!
> >
> > Below are some outputs using kernel 5.1 with patch-2.5.2-pre3.
>
> You may try changing the PCI latency settings on either the IDE
> controller or the sound card. Other than that, I don't know how to help.
>
> --
> Vojtech Pavlik
> SuSE Labs
--
Vojtech Pavlik
SuSE Labs
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: DMA conflicts with soundcard for ide driver via82cxxx
2002-01-01 22:03 Edward Stempel
@ 2002-01-01 22:20 ` Vojtech Pavlik
2002-01-05 16:17 ` Edward Stempel
0 siblings, 1 reply; 10+ messages in thread
From: Vojtech Pavlik @ 2002-01-01 22:20 UTC (permalink / raw)
To: Edward Stempel; +Cc: linux-kernel mailinglist
On Tue, Jan 01, 2002 at 11:03:52PM +0100, Edward Stempel wrote:
> In my BIOS-setup there is an option "PCI latency" which defaults to
> 32. First I changed it to 128. That worked perfect. Later I have decreased
> it to 64, 48 and 40. But 40 still gave some problems (a little bit
> distortion of my sound). After that I tried 44, but the disk was to slow
> with this setting (30 MB/s instead of 40 MB/s). So now I have a PCI
> latency of 48. The strange thing is that it seems not to work
> directly. After the system boot when I do hdparm -t, I get about 5
> MB/s. But then when I switch using_dma off and on again using hdparm, I
> get the full 40 MB/s and no distortion of my es1371. Any ideas what might
> cause this?
You'd have to tell me all other settings in your setup first so I can
guess the cause. What options do you use? Is DMA enabled automatically?
Etc, etc ...
>
> Regards,
>
> Edward
>
>
>
>
> ---------- Forwarded message ----------
> Date: Tue, 1 Jan 2002 18:14:41 +0100
> From: Vojtech Pavlik <vojtech@suse.cz>
> To: Edward Stempel <eazstempel@cal009001.student.utwente.nl>
> Cc: linux-kernel mailinglist <linux-kernel@vger.kernel.org>
> Subject: Re: DMA conflicts with soundcard for ide driver via82cxxx
>
> On Fri, Dec 28, 2001 at 05:10:43PM +0100, Edward Stempel wrote:
>
> > Excellent! That solved my problem.
>
> What exactly did you have to change? It might be worth to include the
> changing of the latency setting in the kernel.
>
> >
> > Thankx
> >
> > Edward
> >
> >
> >
> >
> > Date: Fri, 28 Dec 2001 10:15:05 +0100
> > From: Vojtech Pavlik <vojtech@suse.cz>
> > To: Edward Stempel <eazstempel@cal009001.student.utwente.nl>
> > Cc: linux-kernel mailinglist <linux-kernel@vger.kernel.org>
> > Subject: Re: DMA conflicts with soundcard for ide driver via82cxxx
> >
> > On Fri, Dec 28, 2001 at 03:32:34AM +0100, Edward Stempel wrote:
> >
> > > I have an Asus a7v266 mother board and an Ensoniq sound card in it.
> > > The ide chipset is a VIA VT8233 that is capable of UDMA100. So I built a
> > > kernel with the es1371 sound driver and the via82cxxx ide driver
> > > configured in it. Actually I tried the kernel 2.4.17 first, and the latest
> > > I tried is 4.5.1 with the latest patch (patch-2.5.2-pre3) applied to it.
> > > I also tried the kernel 2.5.1 with Vojtech patch (via-3.33.diff from
> > > his email dated 2001-12-23 23:20:48) applied to it, with the same
> > > (negative) results.
> > >
> > > The good thing is that hdparm reports appr. 40 MB/sec when using DMA and
> > > about 6 MB/sec when not using DMA.
> > > Unfortunately using DMA for ide results in some ugly distortion of the
> > > sound from my soundcard whenever some IO to the disk is done. :((
> > >
> > > I have assigned different interrupts to the PCI-cards (ide is
> > > on-board) and I even changed the sound card's PCI slot, so it shared
> > > its interrupt with another device (acpi instead of USB). It did not solve
> > > the problem. Because the problem only occurs when switching on using_dma
> > > on the ide driver, I think it is a DMA problem with the ide driver. It may
> > > be the es1371 driver as well off course, but I suspect it is the ide
> > > driver (or chipset).
> > >
> > > Reading the list archive from linux-kernel, I discovered there have been
> > > more problems with DMA using this chipset, but I did not find anyone
> > > having the same problem as I have now.
> > >
> > > Has someone also dealt with these problems, or can someone help me
> > > solving this problem? Please help!
> > >
> > > Below are some outputs using kernel 5.1 with patch-2.5.2-pre3.
> >
> > You may try changing the PCI latency settings on either the IDE
> > controller or the sound card. Other than that, I don't know how to help.
> >
> > --
> > Vojtech Pavlik
> > SuSE Labs
>
> --
> Vojtech Pavlik
> SuSE Labs
--
Vojtech Pavlik
SuSE Labs
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: DMA conflicts with soundcard for ide driver via82cxxx
2002-01-01 22:20 ` Vojtech Pavlik
@ 2002-01-05 16:17 ` Edward Stempel
2002-01-05 16:23 ` Vojtech Pavlik
0 siblings, 1 reply; 10+ messages in thread
From: Edward Stempel @ 2002-01-05 16:17 UTC (permalink / raw)
To: Vojtech Pavlik; +Cc: Edward Stempel, linux-kernel mailinglist
On Tue, 1 Jan 2002, Vojtech Pavlik wrote:
> On Tue, Jan 01, 2002 at 11:03:52PM +0100, Edward Stempel wrote:
> > In my BIOS-setup there is an option "PCI latency" which defaults to
> > 32. First I changed it to 128. That worked perfect. Later I have decreased
> > it to 64, 48 and 40. But 40 still gave some problems (a little bit
> > distortion of my sound). After that I tried 44, but the disk was to slow
> > with this setting (30 MB/s instead of 40 MB/s). So now I have a PCI
> > latency of 48. The strange thing is that it seems not to work
> > directly. After the system boot when I do hdparm -t, I get about 5
> > MB/s. But then when I switch using_dma off and on again using hdparm, I
> > get the full 40 MB/s and no distortion of my es1371. Any ideas what might
> > cause this?
>
> You'd have to tell me all other settings in your setup first so I can
> guess the cause. What options do you use? Is DMA enabled automatically?
> Etc, etc ...
I am not sure which settings you need. But I compiled a kernel with:
- Generic PCI IDE chipset support
- Sharing PCI IDE interrupt support
- Generic PCI bus-master DMA support
- Use PCI DMA by default when available
- VIA82CXXX chipset support
After booting this kernel hdparm -v reports that I am using dma, but
hdparm -t only reports about 5 MB/s data transfer rate. When I switch the
using of dma off and on with hdparm -d the transfer rate becomes about
40MB/s
The PCI latency is set in the BIOS setup, and according to /proc/pci this
latency is applied to all PCI devices except my matrox G550 video card,
which has a latency of 64.
I hope this explains something.
>
> >
> > Regards,
> >
> > Edward
> >
> >
> >
> >
> > ---------- Forwarded message ----------
> > Date: Tue, 1 Jan 2002 18:14:41 +0100
> > From: Vojtech Pavlik <vojtech@suse.cz>
> > To: Edward Stempel <eazstempel@cal009001.student.utwente.nl>
> > Cc: linux-kernel mailinglist <linux-kernel@vger.kernel.org>
> > Subject: Re: DMA conflicts with soundcard for ide driver via82cxxx
> >
> > On Fri, Dec 28, 2001 at 05:10:43PM +0100, Edward Stempel wrote:
> >
> > > Excellent! That solved my problem.
> >
> > What exactly did you have to change? It might be worth to include the
> > changing of the latency setting in the kernel.
> >
> > >
> > > Thankx
> > >
> > > Edward
> > >
> > >
> > >
> > >
> > > Date: Fri, 28 Dec 2001 10:15:05 +0100
> > > From: Vojtech Pavlik <vojtech@suse.cz>
> > > To: Edward Stempel <eazstempel@cal009001.student.utwente.nl>
> > > Cc: linux-kernel mailinglist <linux-kernel@vger.kernel.org>
> > > Subject: Re: DMA conflicts with soundcard for ide driver via82cxxx
> > >
> > > On Fri, Dec 28, 2001 at 03:32:34AM +0100, Edward Stempel wrote:
> > >
> > > > I have an Asus a7v266 mother board and an Ensoniq sound card in it.
> > > > The ide chipset is a VIA VT8233 that is capable of UDMA100. So I built a
> > > > kernel with the es1371 sound driver and the via82cxxx ide driver
> > > > configured in it. Actually I tried the kernel 2.4.17 first, and the latest
> > > > I tried is 4.5.1 with the latest patch (patch-2.5.2-pre3) applied to it.
> > > > I also tried the kernel 2.5.1 with Vojtech patch (via-3.33.diff from
> > > > his email dated 2001-12-23 23:20:48) applied to it, with the same
> > > > (negative) results.
> > > >
> > > > The good thing is that hdparm reports appr. 40 MB/sec when using DMA and
> > > > about 6 MB/sec when not using DMA.
> > > > Unfortunately using DMA for ide results in some ugly distortion of the
> > > > sound from my soundcard whenever some IO to the disk is done. :((
> > > >
> > > > I have assigned different interrupts to the PCI-cards (ide is
> > > > on-board) and I even changed the sound card's PCI slot, so it shared
> > > > its interrupt with another device (acpi instead of USB). It did not solve
> > > > the problem. Because the problem only occurs when switching on using_dma
> > > > on the ide driver, I think it is a DMA problem with the ide driver. It may
> > > > be the es1371 driver as well off course, but I suspect it is the ide
> > > > driver (or chipset).
> > > >
> > > > Reading the list archive from linux-kernel, I discovered there have been
> > > > more problems with DMA using this chipset, but I did not find anyone
> > > > having the same problem as I have now.
> > > >
> > > > Has someone also dealt with these problems, or can someone help me
> > > > solving this problem? Please help!
> > > >
> > > > Below are some outputs using kernel 5.1 with patch-2.5.2-pre3.
> > >
> > > You may try changing the PCI latency settings on either the IDE
> > > controller or the sound card. Other than that, I don't know how to help.
> > >
> > > --
> > > Vojtech Pavlik
> > > SuSE Labs
> >
> > --
> > Vojtech Pavlik
> > SuSE Labs
>
>
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: DMA conflicts with soundcard for ide driver via82cxxx
2002-01-05 16:17 ` Edward Stempel
@ 2002-01-05 16:23 ` Vojtech Pavlik
2002-01-05 17:03 ` Edward Stempel
0 siblings, 1 reply; 10+ messages in thread
From: Vojtech Pavlik @ 2002-01-05 16:23 UTC (permalink / raw)
To: Edward Stempel; +Cc: linux-kernel mailinglist
On Sat, Jan 05, 2002 at 05:17:28PM +0100, Edward Stempel wrote:
> On Tue, 1 Jan 2002, Vojtech Pavlik wrote:
>
> > On Tue, Jan 01, 2002 at 11:03:52PM +0100, Edward Stempel wrote:
> > > In my BIOS-setup there is an option "PCI latency" which defaults to
> > > 32. First I changed it to 128. That worked perfect. Later I have decreased
> > > it to 64, 48 and 40. But 40 still gave some problems (a little bit
> > > distortion of my sound). After that I tried 44, but the disk was to slow
> > > with this setting (30 MB/s instead of 40 MB/s). So now I have a PCI
> > > latency of 48. The strange thing is that it seems not to work
> > > directly. After the system boot when I do hdparm -t, I get about 5
> > > MB/s. But then when I switch using_dma off and on again using hdparm, I
> > > get the full 40 MB/s and no distortion of my es1371. Any ideas what might
> > > cause this?
> >
> > You'd have to tell me all other settings in your setup first so I can
> > guess the cause. What options do you use? Is DMA enabled automatically?
> > Etc, etc ...
>
> I am not sure which settings you need. But I compiled a kernel with:
> - Generic PCI IDE chipset support
> - Sharing PCI IDE interrupt support
> - Generic PCI bus-master DMA support
> - Use PCI DMA by default when available
> - VIA82CXXX chipset support
>
> After booting this kernel hdparm -v reports that I am using dma, but
> hdparm -t only reports about 5 MB/s data transfer rate. When I switch the
> using of dma off and on with hdparm -d the transfer rate becomes about
> 40MB/s
What does hdparm -i say before and after? Is there any difference (the
asterisk)?
> The PCI latency is set in the BIOS setup, and according to /proc/pci this
> latency is applied to all PCI devices except my matrox G550 video card,
> which has a latency of 64.
>
>
> I hope this explains something.
Not much yet.
>
>
>
> >
> > >
> > > Regards,
> > >
> > > Edward
> > >
> > >
> > >
> > >
> > > ---------- Forwarded message ----------
> > > Date: Tue, 1 Jan 2002 18:14:41 +0100
> > > From: Vojtech Pavlik <vojtech@suse.cz>
> > > To: Edward Stempel <eazstempel@cal009001.student.utwente.nl>
> > > Cc: linux-kernel mailinglist <linux-kernel@vger.kernel.org>
> > > Subject: Re: DMA conflicts with soundcard for ide driver via82cxxx
> > >
> > > On Fri, Dec 28, 2001 at 05:10:43PM +0100, Edward Stempel wrote:
> > >
> > > > Excellent! That solved my problem.
> > >
> > > What exactly did you have to change? It might be worth to include the
> > > changing of the latency setting in the kernel.
> > >
> > > >
> > > > Thankx
> > > >
> > > > Edward
> > > >
> > > >
> > > >
> > > >
> > > > Date: Fri, 28 Dec 2001 10:15:05 +0100
> > > > From: Vojtech Pavlik <vojtech@suse.cz>
> > > > To: Edward Stempel <eazstempel@cal009001.student.utwente.nl>
> > > > Cc: linux-kernel mailinglist <linux-kernel@vger.kernel.org>
> > > > Subject: Re: DMA conflicts with soundcard for ide driver via82cxxx
> > > >
> > > > On Fri, Dec 28, 2001 at 03:32:34AM +0100, Edward Stempel wrote:
> > > >
> > > > > I have an Asus a7v266 mother board and an Ensoniq sound card in it.
> > > > > The ide chipset is a VIA VT8233 that is capable of UDMA100. So I built a
> > > > > kernel with the es1371 sound driver and the via82cxxx ide driver
> > > > > configured in it. Actually I tried the kernel 2.4.17 first, and the latest
> > > > > I tried is 4.5.1 with the latest patch (patch-2.5.2-pre3) applied to it.
> > > > > I also tried the kernel 2.5.1 with Vojtech patch (via-3.33.diff from
> > > > > his email dated 2001-12-23 23:20:48) applied to it, with the same
> > > > > (negative) results.
> > > > >
> > > > > The good thing is that hdparm reports appr. 40 MB/sec when using DMA and
> > > > > about 6 MB/sec when not using DMA.
> > > > > Unfortunately using DMA for ide results in some ugly distortion of the
> > > > > sound from my soundcard whenever some IO to the disk is done. :((
> > > > >
> > > > > I have assigned different interrupts to the PCI-cards (ide is
> > > > > on-board) and I even changed the sound card's PCI slot, so it shared
> > > > > its interrupt with another device (acpi instead of USB). It did not solve
> > > > > the problem. Because the problem only occurs when switching on using_dma
> > > > > on the ide driver, I think it is a DMA problem with the ide driver. It may
> > > > > be the es1371 driver as well off course, but I suspect it is the ide
> > > > > driver (or chipset).
> > > > >
> > > > > Reading the list archive from linux-kernel, I discovered there have been
> > > > > more problems with DMA using this chipset, but I did not find anyone
> > > > > having the same problem as I have now.
> > > > >
> > > > > Has someone also dealt with these problems, or can someone help me
> > > > > solving this problem? Please help!
> > > > >
> > > > > Below are some outputs using kernel 5.1 with patch-2.5.2-pre3.
> > > >
> > > > You may try changing the PCI latency settings on either the IDE
> > > > controller or the sound card. Other than that, I don't know how to help.
> > > >
> > > > --
> > > > Vojtech Pavlik
> > > > SuSE Labs
> > >
> > > --
> > > Vojtech Pavlik
> > > SuSE Labs
> >
> >
>
--
Vojtech Pavlik
SuSE Labs
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: DMA conflicts with soundcard for ide driver via82cxxx
2002-01-05 16:23 ` Vojtech Pavlik
@ 2002-01-05 17:03 ` Edward Stempel
2002-01-05 17:19 ` Vojtech Pavlik
0 siblings, 1 reply; 10+ messages in thread
From: Edward Stempel @ 2002-01-05 17:03 UTC (permalink / raw)
To: Vojtech Pavlik; +Cc: Edward Stempel, linux-kernel mailinglist
On Sat, 5 Jan 2002, Vojtech Pavlik wrote:
> On Sat, Jan 05, 2002 at 05:17:28PM +0100, Edward Stempel wrote:
> > On Tue, 1 Jan 2002, Vojtech Pavlik wrote:
> >
> > > On Tue, Jan 01, 2002 at 11:03:52PM +0100, Edward Stempel wrote:
> > > > In my BIOS-setup there is an option "PCI latency" which defaults to
> > > > 32. First I changed it to 128. That worked perfect. Later I have decreased
> > > > it to 64, 48 and 40. But 40 still gave some problems (a little bit
> > > > distortion of my sound). After that I tried 44, but the disk was to slow
> > > > with this setting (30 MB/s instead of 40 MB/s). So now I have a PCI
> > > > latency of 48. The strange thing is that it seems not to work
> > > > directly. After the system boot when I do hdparm -t, I get about 5
> > > > MB/s. But then when I switch using_dma off and on again using hdparm, I
> > > > get the full 40 MB/s and no distortion of my es1371. Any ideas what might
> > > > cause this?
> > >
> > > You'd have to tell me all other settings in your setup first so I can
> > > guess the cause. What options do you use? Is DMA enabled automatically?
> > > Etc, etc ...
> >
> > I am not sure which settings you need. But I compiled a kernel with:
> > - Generic PCI IDE chipset support
> > - Sharing PCI IDE interrupt support
> > - Generic PCI bus-master DMA support
> > - Use PCI DMA by default when available
> > - VIA82CXXX chipset support
> >
> > After booting this kernel hdparm -v reports that I am using dma, but
> > hdparm -t only reports about 5 MB/s data transfer rate. When I switch the
> > using of dma off and on with hdparm -d the transfer rate becomes about
> > 40MB/s
>
> What does hdparm -i say before and after? Is there any difference (the
> asterisk)?
Sorry, I cannot reproduce this behaviour again. (I just did a reboot) I am
not sure what happened, as I am using the same kernel and bios-setup. Kind
of strange non-deterministic behaviour here. However, as far as can
remember (it has been some days ago) I did not see something different in
hdparm -i before ore after the switching of and on. Both times udma-5 were
reported by hdparm.
As I cannot reproduce this behaviour now, I suggest we forget about
it. Maybe I did something wird when this happened. I will contact you
whenever I notice the same behaviour again.
>
> > The PCI latency is set in the BIOS setup, and according to /proc/pci this
> > latency is applied to all PCI devices except my matrox G550 video card,
> > which has a latency of 64.
> >
> >
> > I hope this explains something.
>
> Not much yet.
>
> >
> >
> >
> > >
> > > >
> > > > Regards,
> > > >
> > > > Edward
> > > >
> > > >
> > > >
> > > >
> > > > ---------- Forwarded message ----------
> > > > Date: Tue, 1 Jan 2002 18:14:41 +0100
> > > > From: Vojtech Pavlik <vojtech@suse.cz>
> > > > To: Edward Stempel <eazstempel@cal009001.student.utwente.nl>
> > > > Cc: linux-kernel mailinglist <linux-kernel@vger.kernel.org>
> > > > Subject: Re: DMA conflicts with soundcard for ide driver via82cxxx
> > > >
> > > > On Fri, Dec 28, 2001 at 05:10:43PM +0100, Edward Stempel wrote:
> > > >
> > > > > Excellent! That solved my problem.
> > > >
> > > > What exactly did you have to change? It might be worth to include the
> > > > changing of the latency setting in the kernel.
> > > >
> > > > >
> > > > > Thankx
> > > > >
> > > > > Edward
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > Date: Fri, 28 Dec 2001 10:15:05 +0100
> > > > > From: Vojtech Pavlik <vojtech@suse.cz>
> > > > > To: Edward Stempel <eazstempel@cal009001.student.utwente.nl>
> > > > > Cc: linux-kernel mailinglist <linux-kernel@vger.kernel.org>
> > > > > Subject: Re: DMA conflicts with soundcard for ide driver via82cxxx
> > > > >
> > > > > On Fri, Dec 28, 2001 at 03:32:34AM +0100, Edward Stempel wrote:
> > > > >
> > > > > > I have an Asus a7v266 mother board and an Ensoniq sound card in it.
> > > > > > The ide chipset is a VIA VT8233 that is capable of UDMA100. So I built a
> > > > > > kernel with the es1371 sound driver and the via82cxxx ide driver
> > > > > > configured in it. Actually I tried the kernel 2.4.17 first, and the latest
> > > > > > I tried is 4.5.1 with the latest patch (patch-2.5.2-pre3) applied to it.
> > > > > > I also tried the kernel 2.5.1 with Vojtech patch (via-3.33.diff from
> > > > > > his email dated 2001-12-23 23:20:48) applied to it, with the same
> > > > > > (negative) results.
> > > > > >
> > > > > > The good thing is that hdparm reports appr. 40 MB/sec when using DMA and
> > > > > > about 6 MB/sec when not using DMA.
> > > > > > Unfortunately using DMA for ide results in some ugly distortion of the
> > > > > > sound from my soundcard whenever some IO to the disk is done. :((
> > > > > >
> > > > > > I have assigned different interrupts to the PCI-cards (ide is
> > > > > > on-board) and I even changed the sound card's PCI slot, so it shared
> > > > > > its interrupt with another device (acpi instead of USB). It did not solve
> > > > > > the problem. Because the problem only occurs when switching on using_dma
> > > > > > on the ide driver, I think it is a DMA problem with the ide driver. It may
> > > > > > be the es1371 driver as well off course, but I suspect it is the ide
> > > > > > driver (or chipset).
> > > > > >
> > > > > > Reading the list archive from linux-kernel, I discovered there have been
> > > > > > more problems with DMA using this chipset, but I did not find anyone
> > > > > > having the same problem as I have now.
> > > > > >
> > > > > > Has someone also dealt with these problems, or can someone help me
> > > > > > solving this problem? Please help!
> > > > > >
> > > > > > Below are some outputs using kernel 5.1 with patch-2.5.2-pre3.
> > > > >
> > > > > You may try changing the PCI latency settings on either the IDE
> > > > > controller or the sound card. Other than that, I don't know how to help.
> > > > >
> > > > > --
> > > > > Vojtech Pavlik
> > > > > SuSE Labs
> > > >
> > > > --
> > > > Vojtech Pavlik
> > > > SuSE Labs
> > >
> > >
> >
>
>
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: DMA conflicts with soundcard for ide driver via82cxxx
2002-01-05 17:03 ` Edward Stempel
@ 2002-01-05 17:19 ` Vojtech Pavlik
0 siblings, 0 replies; 10+ messages in thread
From: Vojtech Pavlik @ 2002-01-05 17:19 UTC (permalink / raw)
To: Edward Stempel; +Cc: linux-kernel mailinglist
On Sat, Jan 05, 2002 at 06:03:59PM +0100, Edward Stempel wrote:
> On Sat, 5 Jan 2002, Vojtech Pavlik wrote:
>
> > On Sat, Jan 05, 2002 at 05:17:28PM +0100, Edward Stempel wrote:
> > > On Tue, 1 Jan 2002, Vojtech Pavlik wrote:
> > >
> > > > On Tue, Jan 01, 2002 at 11:03:52PM +0100, Edward Stempel wrote:
> > > > > In my BIOS-setup there is an option "PCI latency" which defaults to
> > > > > 32. First I changed it to 128. That worked perfect. Later I have decreased
> > > > > it to 64, 48 and 40. But 40 still gave some problems (a little bit
> > > > > distortion of my sound). After that I tried 44, but the disk was to slow
> > > > > with this setting (30 MB/s instead of 40 MB/s). So now I have a PCI
> > > > > latency of 48. The strange thing is that it seems not to work
> > > > > directly. After the system boot when I do hdparm -t, I get about 5
> > > > > MB/s. But then when I switch using_dma off and on again using hdparm, I
> > > > > get the full 40 MB/s and no distortion of my es1371. Any ideas what might
> > > > > cause this?
> > > >
> > > > You'd have to tell me all other settings in your setup first so I can
> > > > guess the cause. What options do you use? Is DMA enabled automatically?
> > > > Etc, etc ...
> > >
> > > I am not sure which settings you need. But I compiled a kernel with:
> > > - Generic PCI IDE chipset support
> > > - Sharing PCI IDE interrupt support
> > > - Generic PCI bus-master DMA support
> > > - Use PCI DMA by default when available
> > > - VIA82CXXX chipset support
> > >
> > > After booting this kernel hdparm -v reports that I am using dma, but
> > > hdparm -t only reports about 5 MB/s data transfer rate. When I switch the
> > > using of dma off and on with hdparm -d the transfer rate becomes about
> > > 40MB/s
> >
> > What does hdparm -i say before and after? Is there any difference (the
> > asterisk)?
>
> Sorry, I cannot reproduce this behaviour again. (I just did a reboot) I am
> not sure what happened, as I am using the same kernel and bios-setup. Kind
> of strange non-deterministic behaviour here. However, as far as can
> remember (it has been some days ago) I did not see something different in
> hdparm -i before ore after the switching of and on. Both times udma-5 were
> reported by hdparm.
>
> As I cannot reproduce this behaviour now, I suggest we forget about
> it. Maybe I did something wird when this happened. I will contact you
> whenever I notice the same behaviour again.
Ok; thanks.
>
>
> >
> > > The PCI latency is set in the BIOS setup, and according to /proc/pci this
> > > latency is applied to all PCI devices except my matrox G550 video card,
> > > which has a latency of 64.
> > >
> > >
> > > I hope this explains something.
> >
> > Not much yet.
> >
> > >
> > >
> > >
> > > >
> > > > >
> > > > > Regards,
> > > > >
> > > > > Edward
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > ---------- Forwarded message ----------
> > > > > Date: Tue, 1 Jan 2002 18:14:41 +0100
> > > > > From: Vojtech Pavlik <vojtech@suse.cz>
> > > > > To: Edward Stempel <eazstempel@cal009001.student.utwente.nl>
> > > > > Cc: linux-kernel mailinglist <linux-kernel@vger.kernel.org>
> > > > > Subject: Re: DMA conflicts with soundcard for ide driver via82cxxx
> > > > >
> > > > > On Fri, Dec 28, 2001 at 05:10:43PM +0100, Edward Stempel wrote:
> > > > >
> > > > > > Excellent! That solved my problem.
> > > > >
> > > > > What exactly did you have to change? It might be worth to include the
> > > > > changing of the latency setting in the kernel.
> > > > >
> > > > > >
> > > > > > Thankx
> > > > > >
> > > > > > Edward
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > Date: Fri, 28 Dec 2001 10:15:05 +0100
> > > > > > From: Vojtech Pavlik <vojtech@suse.cz>
> > > > > > To: Edward Stempel <eazstempel@cal009001.student.utwente.nl>
> > > > > > Cc: linux-kernel mailinglist <linux-kernel@vger.kernel.org>
> > > > > > Subject: Re: DMA conflicts with soundcard for ide driver via82cxxx
> > > > > >
> > > > > > On Fri, Dec 28, 2001 at 03:32:34AM +0100, Edward Stempel wrote:
> > > > > >
> > > > > > > I have an Asus a7v266 mother board and an Ensoniq sound card in it.
> > > > > > > The ide chipset is a VIA VT8233 that is capable of UDMA100. So I built a
> > > > > > > kernel with the es1371 sound driver and the via82cxxx ide driver
> > > > > > > configured in it. Actually I tried the kernel 2.4.17 first, and the latest
> > > > > > > I tried is 4.5.1 with the latest patch (patch-2.5.2-pre3) applied to it.
> > > > > > > I also tried the kernel 2.5.1 with Vojtech patch (via-3.33.diff from
> > > > > > > his email dated 2001-12-23 23:20:48) applied to it, with the same
> > > > > > > (negative) results.
> > > > > > >
> > > > > > > The good thing is that hdparm reports appr. 40 MB/sec when using DMA and
> > > > > > > about 6 MB/sec when not using DMA.
> > > > > > > Unfortunately using DMA for ide results in some ugly distortion of the
> > > > > > > sound from my soundcard whenever some IO to the disk is done. :((
> > > > > > >
> > > > > > > I have assigned different interrupts to the PCI-cards (ide is
> > > > > > > on-board) and I even changed the sound card's PCI slot, so it shared
> > > > > > > its interrupt with another device (acpi instead of USB). It did not solve
> > > > > > > the problem. Because the problem only occurs when switching on using_dma
> > > > > > > on the ide driver, I think it is a DMA problem with the ide driver. It may
> > > > > > > be the es1371 driver as well off course, but I suspect it is the ide
> > > > > > > driver (or chipset).
> > > > > > >
> > > > > > > Reading the list archive from linux-kernel, I discovered there have been
> > > > > > > more problems with DMA using this chipset, but I did not find anyone
> > > > > > > having the same problem as I have now.
> > > > > > >
> > > > > > > Has someone also dealt with these problems, or can someone help me
> > > > > > > solving this problem? Please help!
> > > > > > >
> > > > > > > Below are some outputs using kernel 5.1 with patch-2.5.2-pre3.
> > > > > >
> > > > > > You may try changing the PCI latency settings on either the IDE
> > > > > > controller or the sound card. Other than that, I don't know how to help.
> > > > > >
> > > > > > --
> > > > > > Vojtech Pavlik
> > > > > > SuSE Labs
> > > > >
> > > > > --
> > > > > Vojtech Pavlik
> > > > > SuSE Labs
> > > >
> > > >
> > >
> >
> >
--
Vojtech Pavlik
SuSE Labs
^ permalink raw reply [flat|nested] 10+ messages in thread
end of thread, other threads:[~2002-01-05 17:20 UTC | newest]
Thread overview: 10+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2001-12-28 2:32 DMA conflicts with soundcard for ide driver via82cxxx Edward Stempel
2001-12-28 9:15 ` Vojtech Pavlik
-- strict thread matches above, loose matches on Subject: below --
2001-12-28 16:10 Edward Stempel
2002-01-01 17:14 ` Vojtech Pavlik
2002-01-01 22:03 Edward Stempel
2002-01-01 22:20 ` Vojtech Pavlik
2002-01-05 16:17 ` Edward Stempel
2002-01-05 16:23 ` Vojtech Pavlik
2002-01-05 17:03 ` Edward Stempel
2002-01-05 17:19 ` Vojtech Pavlik
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