Hi,
since upgrading to kernel 2.6.20 my pata disk, using new pata driver, is
initialized maximum in DMA33 mode (and obviously performances drop
consequently), as you can see from:
pata_amd 0000:00:06.0: version 0.2.7
PCI: Setting latency timer of device 0000:00:06.0 to 64
ata5: PATA max UDMA/133 cmd 0x1F0 ctl 0x3F6 bmdma 0xF000 irq 14
ata6: PATA max UDMA/133 cmd 0x170 ctl 0x376 bmdma 0xF008 irq 15
scsi4 : pata_amd
ata5.00: ATA-7, max UDMA/100, 156368016 sectors: LBA48
ata5.00: ata5: dev 0 multi count 1
ata5.00: configured for UDMA/33
scsi5 : pata_amd
ata6.00: ATAPI, max UDMA/33
ata6.00: configured for UDMA/33
scsi 4:0:0:0: Direct-Access ATA SAMSUNG SP0822N WA10 PQ: 0 ANSI:
5
SCSI device sdc: 156368016 512-byte hdwr sectors (80060 MB)
sdc: Write Protect is off
sdc: Mode Sense: 00 3a 00 00
SCSI device sdc: write cache: enabled, read cache: enabled, doesn't
support DPO
or FUA
SCSI device sdc: 156368016 512-byte hdwr sectors (80060 MB)
sdc: Write Protect is off
sdc: Mode Sense: 00 3a 00 00
SCSI device sdc: write cache: enabled, read cache: enabled, doesn't
support DPO
or FUA
sdc: sdc1 sdc2 sdc3
sd 4:0:0:0: Attached scsi disk sdc
while with kernel 2.6.19.X it was initialized correctly in DMA100 mode:
pata_amd 0000:00:06.0: version 0.2.4
PCI: Setting latency timer of device 0000:00:06.0 to 64
ata5: PATA max UDMA/133 cmd 0x1F0 ctl 0x3F6 bmdma 0xF000 irq 14
ata6: PATA max UDMA/133 cmd 0x170 ctl 0x376 bmdma 0xF008 irq 15
scsi4 : pata_amd
ata5.00: ATA-7, max UDMA/100, 156368016 sectors: LBA48
ata5.00: ata5: dev 0 multi count 1
ata5.00: configured for UDMA/100
scsi5 : pata_amd
ata6.00: ATAPI, max UDMA/33
ata6.00: configured for UDMA/33
scsi 4:0:0:0: Direct-Access ATA SAMSUNG SP0822N WA10 PQ: 0 ANSI: 5
SCSI device sdc: 156368016 512-byte hdwr sectors (80060 MB)
sdc: Write Protect is off
sdc: Mode Sense: 00 3a 00 00
SCSI device sdc: drive cache: write back
SCSI device sdc: 156368016 512-byte hdwr sectors (80060 MB)
sdc: Write Protect is off
sdc: Mode Sense: 00 3a 00 00
SCSI device sdc: drive cache: write back
sdc: sdc1 sdc2 sdc3
sd 4:0:0:0: Attached scsi disk sdc
I have other 2 sata disks on this system, and I have no problems with
them. I Wonder if this is due to some controller/disk problem triggered
just by 2.6.20 kernel (I saw there are a lot of changes into eh code),
while 2.6.19.X and previous sees everything OK.
Also forf the sata disks, in fact, I see this "doesn't support DPO or FUA"
warning, but I have to admit I do not know which features it is referred to.
This system is an Athlon64 X2 3800+ with an nvidia2 IDE controller
here is the lspci -v
00:00.0 Memory controller: nVidia Corporation CK804 Memory Controller (rev
a3)
Subsystem: ASUSTeK Computer Inc. Unknown device 815a
Flags: bus master, 66MHz, fast devsel, latency 0
Capabilities: [44] HyperTransport: Slave or Primary Interface
Capabilities: [e0] HyperTransport: MSI Mapping
00:01.0 ISA bridge: nVidia Corporation CK804 ISA Bridge (rev a3)
Subsystem: ASUSTeK Computer Inc. K8N4-E Mainboard
Flags: bus master, 66MHz, fast devsel, latency 0
00:01.1 SMBus: nVidia Corporation CK804 SMBus (rev a2)
Subsystem: ASUSTeK Computer Inc. K8N4-E Mainboard
Flags: 66MHz, fast devsel, IRQ 10
I/O ports at e400 [size=32]
I/O ports at 4c00 [size=64]
I/O ports at 4c40 [size=64]
Capabilities: [44] Power Management version 2
00:02.0 USB Controller: nVidia Corporation CK804 USB Controller (rev a2)
(prog-if 10 [OHCI])
Subsystem: ASUSTeK Computer Inc. K8N4-E Mainboard
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 20
Memory at d4004000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [44] Power Management version 2
00:02.1 USB Controller: nVidia Corporation CK804 USB Controller (rev a3)
(prog-if 20 [EHCI])
Subsystem: ASUSTeK Computer Inc. K8N4-E Mainboard
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 22
Memory at d4005000 (32-bit, non-prefetchable) [size=256]
Capabilities: [44] Debug port
Capabilities: [80] Power Management version 2
00:04.0 Multimedia audio controller: nVidia Corporation CK804 AC'97 Audio
Controller (rev a2)
Subsystem: ASUSTeK Computer Inc. Unknown device 8166
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 23
I/O ports at dc00 [size=256]
I/O ports at e000 [size=256]
Memory at d4003000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [44] Power Management version 2
00:06.0 IDE interface: nVidia Corporation CK804 IDE (rev f2) (prog-if 8a
[Master SecP PriP])
Subsystem: Unknown device f043:815a
Flags: bus master, 66MHz, fast devsel, latency 0
[virtual] Memory at 000001f0 (32-bit, non-prefetchable) [disabled]
[size=8]
[virtual] Memory at 000003f0 (type 3, non-prefetchable) [disabled]
[size=1]
[virtual] Memory at 00000170 (32-bit, non-prefetchable) [disabled]
[size=8]
[virtual] Memory at 00000370 (type 3, non-prefetchable) [disabled]
[size=1]
I/O ports at f000 [size=16]
Capabilities: [44] Power Management version 2
00:07.0 IDE interface: nVidia Corporation CK804 Serial ATA Controller (rev
f3) (prog-if 85 [Master SecO PriO])
Subsystem: ASUSTeK Computer Inc. Unknown device 815a
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 23
I/O ports at 09f0 [size=8]
I/O ports at 0bf0 [size=4]
I/O ports at 0970 [size=8]
I/O ports at 0b70 [size=4]
I/O ports at d800 [size=16]
Memory at d4002000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [44] Power Management version 2
00:08.0 IDE interface: nVidia Corporation CK804 Serial ATA Controller (rev
f3) (prog-if 85 [Master SecO PriO])
Subsystem: ASUSTeK Computer Inc. K8N4-E Mainboard
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 22
I/O ports at 09e0 [size=8]
I/O ports at 0be0 [size=4]
I/O ports at 0960 [size=8]
I/O ports at 0b60 [size=4]
I/O ports at c400 [size=16]
Memory at d4001000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [44] Power Management version 2
00:09.0 PCI bridge: nVidia Corporation CK804 PCI Bridge (rev a2) (prog-if
01 [Subtractive decode])
Flags: bus master, 66MHz, fast devsel, latency 0
Bus: primary=00, secondary=05, subordinate=05, sec-latency=128
I/O behind bridge: 0000a000-0000afff
Memory behind bridge: d2000000-d3ffffff
Prefetchable memory behind bridge: 88000000-880fffff
00:0a.0 Bridge: nVidia Corporation CK804 Ethernet Controller (rev a3)
Subsystem: ASUSTeK Computer Inc. Unknown device 816a
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 21
Memory at d4000000 (32-bit, non-prefetchable) [size=4K]
I/O ports at b000 [size=8]
Capabilities: [44] Power Management version 2
00:0b.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev a3) (prog-if
00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=04, subordinate=04, sec-latency=0
Capabilities: [40] Power Management version 2
Capabilities: [48] Message Signalled Interrupts: 64bit+ Queue=0/1
Enable+
Capabilities: [58] HyperTransport: MSI Mapping
Capabilities: [80] Express Root Port (Slot+) IRQ 0
Capabilities: [100] Virtual Channel
00:0c.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev a3) (prog-if
00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
Capabilities: [40] Power Management version 2
Capabilities: [48] Message Signalled Interrupts: 64bit+ Queue=0/1
Enable+
Capabilities: [58] HyperTransport: MSI Mapping
Capabilities: [80] Express Root Port (Slot+) IRQ 0
Capabilities: [100] Virtual Channel
00:0d.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev a3) (prog-if
00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
Capabilities: [40] Power Management version 2
Capabilities: [48] Message Signalled Interrupts: 64bit+ Queue=0/1
Enable+
Capabilities: [58] HyperTransport: MSI Mapping
Capabilities: [80] Express Root Port (Slot+) IRQ 0
Capabilities: [100] Virtual Channel
00:0e.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev a3) (prog-if
00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
I/O behind bridge: 00009000-00009fff
Memory behind bridge: d0000000-d1ffffff
Prefetchable memory behind bridge:
00000000c0000000-00000000cff00000
Capabilities: [40] Power Management version 2
Capabilities: [48] Message Signalled Interrupts: 64bit+ Queue=0/1
Enable+
Capabilities: [58] HyperTransport: MSI Mapping
Capabilities: [80] Express Root Port (Slot+) IRQ 0
Capabilities: [100] Virtual Channel
00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron]
HyperTransport Technology Configuration
Flags: fast devsel
Capabilities: [80] HyperTransport: Host or Secondary Interface
00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron]
Address
Map
Flags: fast devsel
00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron]
DRAM Controller
Flags: fast devsel
00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron]
Miscellaneous Control
Flags: fast devsel
01:00.0 VGA compatible controller: ATI Technologies Inc RV370 5B60 [Radeon
X300
(PCIE)] (prog-if 00 [VGA])
Subsystem: PC Partner Limited Unknown device 1490
Flags: bus master, fast devsel, latency 0, IRQ 3
Memory at c0000000 (32-bit, prefetchable) [size=256M]
I/O ports at 9000 [size=256]
Memory at d1000000 (32-bit, non-prefetchable) [size=64K]
[virtual] Expansion ROM at d0000000 [disabled] [size=128K]
Capabilities: [50] Power Management version 2
Capabilities: [58] Express Endpoint IRQ 0
Capabilities: [80] Message Signalled Interrupts: 64bit+ Queue=0/0
Enable-
Capabilities: [100] Advanced Error Reporting
01:00.1 Display controller: ATI Technologies Inc RV370 [Radeon X300SE]
Subsystem: PC Partner Limited Unknown device 1491
Flags: fast devsel
Memory at d1010000 (32-bit, non-prefetchable) [disabled]
[size=64K]
Capabilities: [50] Power Management version 2
Capabilities: [58] Express Endpoint IRQ 0
05:02.0 FireWire (IEEE 1394): VIA Technologies, Inc. IEEE 1394 Host
Controller (rev 80) (prog-if 10 [OHCI])
Subsystem: ASUSTeK Computer Inc. A8V Deluxe
Flags: bus master, stepping, medium devsel, latency 32, IRQ 19
Memory at d3001000 (32-bit, non-prefetchable) [size=2K]
I/O ports at a000 [size=128]
Capabilities: [50] Power Management version 2
05:04.0 Ethernet controller: 3Com Corporation 3c905C-TX/TX-M [Tornado]
(rev 78)
Subsystem: 3Com Corporation 3C905C-TX Fast Etherlink for PC
Management NIC
Flags: bus master, medium devsel, latency 32, IRQ 17
I/O ports at a400 [size=128]
Memory at d3000000 (32-bit, non-prefetchable) [size=128]
[virtual] Expansion ROM at 88000000 [disabled] [size=128K]
Capabilities: [dc] Power Management version 2
Willing to test any patch.
thanx
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