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SubjectRe: USB storage does not work with 3GB of RAM, but does with 2G of RAM
Date
Hi Andi,

Thanks for the quick reply. I'm at work, so I won't be able to test USB
until I get home in a few hours. I have an ssh connection to the machine,
but that's it for now. Just in case you are wondering what address it's
using for DMA, below it a copy of my lspci -v.

Thanks again for replying.

Jon

00:00.0 Host bridge: nVidia Corporation nForce3 250Gb Host Bridge (rev a1)
Subsystem: Micro-Star International Co., Ltd.: Unknown device 0250
Flags: bus master, 66Mhz, fast devsel, latency 0
Memory at f0000000 (32-bit, prefetchable) [size=128M]
Capabilities: [44] HyperTransport: Slave or Primary Interface
Capabilities: [c0] AGP version 3.0

00:01.0 ISA bridge: nVidia Corporation nForce3 250Gb LPC Bridge (rev a2)
Subsystem: Micro-Star International Co., Ltd.: Unknown device 0250
Flags: bus master, 66Mhz, fast devsel, latency 0

00:01.1 SMBus: nVidia Corporation nForce 250Gb PCI System Management (rev
a1)
Subsystem: Micro-Star International Co., Ltd.: Unknown device 0250
Flags: 66Mhz, fast devsel, IRQ 11
I/O ports at fc00 [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 CK8S USB Controller (rev a1)
(prog-if 10 [OHCI])
Subsystem: Micro-Star International Co., Ltd.: Unknown device 0250
Flags: bus master, 66Mhz, fast devsel, latency 0, IRQ 185
Memory at fe02f000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [44] Power Management version 2

00:02.1 USB Controller: nVidia Corporation CK8S USB Controller (rev a1)
(prog-if 10 [OHCI])
Subsystem: Micro-Star International Co., Ltd.: Unknown device 0250
Flags: bus master, 66Mhz, fast devsel, latency 0, IRQ 193
Memory at fe02e000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [44] Power Management version 2

00:02.2 USB Controller: nVidia Corporation nForce3 EHCI USB 2.0 Controller
(rev a2) (prog-if 20 [EHCI])
Subsystem: Micro-Star International Co., Ltd.: Unknown device 0250
Flags: bus master, 66Mhz, fast devsel, latency 0, IRQ 177
Memory at fe02d000 (32-bit, non-prefetchable) [size=256]
Capabilities: [44] Debug port
Capabilities: [80] Power Management version 2

00:05.0 Bridge: nVidia Corporation CK8S Ethernet Controller (rev a2)
Subsystem: Micro-Star International Co., Ltd.: Unknown device 0250
Flags: bus master, 66Mhz, fast devsel, latency 0, IRQ 193
Memory at fe02c000 (32-bit, non-prefetchable) [size=4K]
I/O ports at f000 [size=8]
Capabilities: [44] Power Management version 2

00:06.0 Multimedia audio controller: nVidia Corporation nForce3 250Gb AC'97
Audio Controller (rev a1)
Subsystem: Micro-Star International Co., Ltd.: Unknown device 7585
Flags: bus master, 66Mhz, fast devsel, latency 0, IRQ 209
I/O ports at ec00 [size=256]
I/O ports at e800 [size=128]
Memory at fe02b000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [44] Power Management version 2

00:08.0 IDE interface: nVidia Corporation CK8S Parallel ATA Controller
(v2.5) (rev a2) (prog-if 8a [Master SecP PriP])
Subsystem: Micro-Star International Co., Ltd.: Unknown device 0250
Flags: bus master, 66Mhz, fast devsel, latency 0
I/O ports at dc00 [size=16]
Capabilities: [44] Power Management version 2

00:09.0 IDE interface: nVidia Corporation CK8S Serial ATA Controller (v2.5)
(rev a2) (prog-if 85 [Master SecO PriO])
Subsystem: Micro-Star International Co., Ltd.: Unknown device 0250
Flags: bus master, 66Mhz, fast devsel, latency 0, IRQ 177
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 c800 [size=16]
I/O ports at c400 [size=128]
Capabilities: [44] Power Management version 2

00:0a.0 IDE interface: nVidia Corporation CK8S Serial ATA Controller (v2.5)
(rev a2) (prog-if 85 [Master SecO PriO])
Subsystem: Micro-Star International Co., Ltd.: Unknown device 0250
Flags: bus master, 66Mhz, fast devsel, latency 0, IRQ 185
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 b000 [size=16]
I/O ports at ac00 [size=128]
Capabilities: [44] Power Management version 2

00:0b.0 PCI bridge: nVidia Corporation nForce3 250Gb AGP Host to PCI Bridge
(rev a2) (prog-if 00 [Normal decode])
Flags: bus master, 66Mhz, medium devsel, latency 16
Bus: primary=00, secondary=01, subordinate=01, sec-latency=10
I/O behind bridge: 00009000-00009fff
Memory behind bridge: fa000000-fcffffff
Prefetchable memory behind bridge: e0000000-efffffff

00:0e.0 PCI bridge: nVidia Corporation nForce3 250Gb PCI-to-PCI Bridge (rev
a2) (prog-if 00 [Normal decode])
Flags: bus master, 66Mhz, fast devsel, latency 0
Bus: primary=00, secondary=02, subordinate=02, sec-latency=128
I/O behind bridge: 00008000-00008fff
Memory behind bridge: fdf00000-fdffffff
Prefetchable memory behind bridge: fde00000-fdefffff

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: nVidia Corporation NV40 [GeForce 6800 GT]
(rev a1) (prog-if 00 [VGA])
Flags: bus master, 66Mhz, medium devsel, latency 248, IRQ 201
Memory at fa000000 (32-bit, non-prefetchable) [size=16M]
Memory at e0000000 (32-bit, prefetchable) [size=256M]
Memory at fb000000 (32-bit, non-prefetchable) [size=16M]
Capabilities: [60] Power Management version 2
Capabilities: [44] AGP version 3.0

02:0a.0 Multimedia video controller: Brooktree Corporation Bt878 Video
Capture (rev 02)
Subsystem: ATI Technologies Inc: Unknown device 0001
Flags: bus master, medium devsel, latency 32, IRQ 217
Memory at fdeff000 (32-bit, prefetchable) [size=4K]

02:0a.1 Multimedia controller: Brooktree Corporation Bt878 Audio Capture
(rev 02)
Subsystem: ATI Technologies Inc TV-Wonder
Flags: bus master, medium devsel, latency 32, IRQ 217
Memory at fdefe000 (32-bit, prefetchable) [size=4K]

02:0c.0 FireWire (IEEE 1394): VIA Technologies, Inc. IEEE 1394 Host
Controller (rev 46) (prog-if 10 [OHCI])
Subsystem: Unknown device 0574:086c
Flags: bus master, stepping, medium devsel, latency 32, IRQ 225
Memory at fdfff000 (32-bit, non-prefetchable) [size=2K]
I/O ports at 8c00 [size=128]
Capabilities: [50] Power Management version 2

02:0d.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8169
Gigabit Ethernet (rev 10)
Subsystem: Micro-Star International Co., Ltd.: Unknown device 025c
Flags: bus master, 66Mhz, medium devsel, latency 32, IRQ 201
I/O ports at 8800 [size=256]
Memory at fdffe000 (32-bit, non-prefetchable) [size=256]
Capabilities: [dc] Power Management version 2



>From: Andi Kleen <ak@suse.de>
>To: "Jon Schindler" <jonschindler@hotmail.com>
>CC: linux-kernel@vger.kernel.org
>Subject: Re: USB storage does not work with 3GB of RAM, but does with 2G of
>RAM
>Date: 08 Jul 2005 21:29:37 +0200
>
>"Jon Schindler" <jonschindler@hotmail.com> writes:
> >
> > This mainly seems to be an issue with USB mass storage devices like
> > USB memory sticks and USB hard drives (I've tried both, and neither is
> > assigned a scsi device properly). I am still able to use my USB mouse
> > when I have 3GB installed. I'm not sure if that makes it a USB 1.1
> > issue or a USB storage issue, but hopefully someone will have some
> > insight after looking at the logs. Thanks in advance for any help.
>
>It sounds like the Nvidia EHCI controller has trouble DMAing to high
>addresses. Would be a bad bug if true.
>
>Does it work when you disable EHCI and only enable OHCI? (this will
>limit you to USB 1.1)
>
>-Andi


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