kernelmágusok! Mitől van valaminek negatív memóriacíme?

Sziasztok!

Mitől lehet egy eszköznek negatív memóriacíme?

lspci -v ezt adja vissza:

0e:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5722 Gigabit Ethernet PCI Express
	Subsystem: Hewlett-Packard Company Device 7051
	Flags: bus master, fast devsel, latency 0, IRQ 28
	Memory at ed000000 (64-bit, non-prefetchable) [=64K]
	Expansion ROM at <ignored> [disabled]
	Capabilities: [48] Power Management version 3
	Capabilities: [50] Vital Product Data <?>
	Capabilities: [58] Vendor Specific Information <?>
	Capabilities: [e8] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable+
	Capabilities: [d0] Express Endpoint, MSI 00
	Capabilities: [100] Advanced Error Reporting <?>
	Capabilities: [13c] Virtual Channel <?>
	Capabilities: [160] Device Serial Number d0-63-e6-fe-ff-46-ce-f4
	Capabilities: [16c] Power Budgeting <?>
	Kernel driver in use: tg3
	Kernel modules: tg3

11:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5704 Gigabit Ethernet (rev 10)
	Subsystem: Broadcom Corporation NetXtreme BCM5704 Gigabit Ethernet
	Flags: 66MHz, medium devsel, IRQ 21
	Memory at ffdffffbed100000 (64-bit, non-prefetchable) [=64K]
	[virtual] Expansion ROM at 80600000 [disabled] [=128K]
	Capabilities: [40] PCI-X non-bridge device
	Capabilities: [48] Power Management version 2
	Capabilities: [50] Vital Product Data <?>
	Capabilities: [58] Message Signalled Interrupts: Mask- 64bit+ Queue=0/3 Enable-
	Kernel modules: tg3

11:00.1 Ethernet controller: Broadcom Corporation NetXtreme BCM5704 Gigabit Ethernet (rev 10)
	Subsystem: Broadcom Corporation NetXtreme BCM5704 Gigabit Ethernet
	Flags: 66MHz, medium devsel, IRQ 22
	Memory at ffffffffed110000 (64-bit, non-prefetchable) [=64K]
	Capabilities: [40] PCI-X non-bridge device
	Capabilities: [48] Power Management version 2
	Capabilities: [50] Vital Product Data <?>
	Capabilities: [58] Message Signalled Interrupts: Mask- 64bit+ Queue=0/3 Enable-
	Kernel modules: tg3

Ami alapján negatív memóriacímet gondoltam az a nagyonnagy hexa szám FF-ekkel kezdődve. (Memory at sorok) Haloványodó digit1 tudásom szerint ami sok 1-essel kezdődik az komplemens-negatív szám.
A gépben van egy alaplapi és egy PCI-os (pci-x?) hálókártya. Az alaplapi működik (első), a másik nem.
Közben meg ilyeneket írogat a dmesg:

[    1.918250] eth0: Tigon3 [partno(N/A) rev a200] (PCI Express) MAC address f4:ce:46:e6:63:d0
[    1.918255] eth0: attached PHY is 5722/5756 (10/100/1000Base-T Ethernet) (WireSpeed[1])
[    1.918259] eth0: RXcsums[1] LinkChgREG[0] MIirq[0] ASF[0] TSOcap[1]
[    1.918261] eth0: dma_rwctrl[76180000] dma_mask[64-bit]
[    1.918298]   alloc irq_desc for 21 on node -1
[    1.918300]   alloc kstat_irqs on node -1
[    1.918308] tg3 0000:11:00.0: PCI INT A -> GSI 21 (level, low) -> IRQ 21
[    1.918330] ioremap: invalid physical address ffdffffbed100000
[    1.918332] ------------[ cut here ]------------
[    1.918340] WARNING: at /build/buildd/linux-2.6.32/arch/x86/mm/ioremap.c:120 __ioremap_caller+0x360/0x3d0()
[    1.918343] Hardware name: ProLiant ML110 G5
[    1.918345] Modules linked in: softcursor usbhid(+) hid vga16fb vgastate tg3(+)
[    1.918356] Pid: 150, comm: modprobe Not tainted 2.6.32-21-server #31-Ubuntu
[    1.918360] Call Trace:
[    1.918366]  [<ffffffff81066d1b>] warn_slowpath_common+0x7b/0xc0
[    1.918370]  [<ffffffff81066d74>] warn_slowpath_null+0x14/0x20
[    1.918374]  [<ffffffff81041360>] __ioremap_caller+0x360/0x3d0
[    1.918381]  [<ffffffff812cabae>] ? pci_ioremap_bar+0x4e/0x80
(....)

[    1.918530]  [<ffffffff810a12af>] sys_init_module+0xdf/0x260
[    1.918536]  [<ffffffff810131b2>] system_call_fastpath+0x16/0x1b
[    1.918539] ---[ end trace 8919ac0495aa88ca ]---
[    1.918541] tg3: Cannot map device registers, aborting.
[    1.918551] tg3 0000:11:00.0: PCI INT A disabled
[    1.918561] tg3: probe of 0000:11:00.0 failed with error -12
[    1.918579]   alloc irq_desc for 22 on node -1
[    1.918581]   alloc kstat_irqs on node -1
[    1.918586] tg3 0000:11:00.1: PCI INT B -> GSI 22 (level, low) -> IRQ 22
[    1.918603] ioremap: invalid physical address ffffffffed110000
[    1.918605] tg3: Cannot map device registers, aborting.
[    1.918612] tg3 0000:11:00.1: PCI INT B disabled
[    1.918616] tg3: probe of 0000:11:00.1 failed with error -12

A gépet béreljük, a hálókártyacsere elég macerás lenne, jobb volna valami szép szoftveres megoldást találni rá. A broadcom support ködösít, ti láttatok már ilyent?

uname -a:

Linux beta 2.6.32-21-server #31-Ubuntu SMP Tue Apr 13 21:43:48 UTC 2010 x86_64 GNU/Linux