[請教] adaptec scsi card on pci slot is operate at 16bit?

[vinsonho19820306]

os: debian 3.1r4
kernel: 2.6.8-12-em64t-p4-smp

motherboard: intel 945GNTL
cpu: intel pentinum d 805
ram: total 2GB (dual channel)
scsi card: adaptec 29320ALP-R


my question is:

as the pci slot of the motherboard is running 32bit / 32MHz (not
PCI-X), the adaptec scsi card should operate at 32bit, but i found that
the card is running 16bit, how can i solve this problem.

***** /var/log/syslog *****
Dec 23 09:54:31 web00 kernel: scsi0 : Adaptec AIC79XX PCI-X SCSI HBA
DRIVER, Rev 1.3.11
Dec 23 09:54:31 web00 kernel: <Adaptec 29320ALP Ultra320 SCSI
adapter>
Dec 23 09:54:31 web00 kernel: aic7901: Ultra320 Wide Channel A,
SCSI Id=7, PCI 33 or 66Mhz, 512 SCBs
Dec 23 09:54:31 web00 kernel:
Dec 23 09:54:31 web00 kernel: Using anticipatory io scheduler
Dec 23 09:54:31 web00 kernel: (scsi0:A:0): 320.000MB/s transfers
(160.000MHz RDSTRM|DT|IU|RTI|QAS, 16bit)



***** lspci command result *****
0000:00:00.0 Host bridge: Intel Corporation 82945G/GZ/P/PL Memory Controller Hub (rev 02)
0000:00:02.0 VGA compatible controller: Intel Corporation 82945G/GZ Integrated G raphics Controller (rev 02)
0000:00:1c.0 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 1 (rev 01)
0000:00:1c.2 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 3 (rev 01)
0000:00:1c.3 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 4 (rev 01)
0000:00:1d.0 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI #1 (rev 01)
0000:00:1d.1 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI #2 (rev 01)
0000:00:1d.2 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI #3 (rev 01)
0000:00:1d.3 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI #4 (rev 01)
0000:00:1d.7 USB Controller: Intel Corporation 82801G (ICH7 Family) USB2 EHCI Co ntroller (rev 01)
0000:00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev e1)
0000:00:1f.0 ISA bridge: Intel Corporation 82801GB/GR (ICH7 Family) LPC Interfac e Bridge (rev 01)
0000:00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controlle r (rev 01)
0000:00:1f.2 IDE interface: Intel Corporation 82801GB/GR/GH (ICH7 Family) Serial ATA Storage Controller IDE (rev 01)
0000:00:1f.3 SMBus: Intel Corporation 82801G (ICH7 Family) SMBus Controller (rev 01)
0000:04:00.0 SCSI storage controller: Adaptec ASC-29320ALP U320 (rev 10)
0000:04:02.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8029(AS)
0000:04:08.0 Ethernet controller: Intel Corporation 82801G (ICH7 Family) LAN Con troller (rev 01)

[阿信]

你看到的那個16bit是scsi bus width而不是PCI。U320的bus width本來就是16bit

[vinsonho19820306]

this help me a lot, thanks for your sharing