Date: Fri, 15 Jul 2011 15:07:31 -0700 From: "Mark McConnell" <markmcconnell@iinet.com> To: freebsd-stable@freebsd.org Subject: disable 64-bit dma for one PCI slot only? Message-ID: <4E20BA23.13717.66C6F57@markmcconnell.iinet.com>
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Dear folks,
I have two LSI raid cards, one of which (SCSI 320-I) supports
64-bit DMA when 4GB+ of DDR is present and another which
does not (SATA 150-D) . Consquently I've disabled 64-bit
addressing for amr devices.
I would like to disable 64-bit addressing for the SATA card, but
permit it for the SCSI card. Is this possible?
----------------
# grep amr /boot/loader.conf
hw.amr.force_sg32=1
---------------
# grep "amr.: <LSILogic" /var/log/dmesg.yesterday
amr0: <LSILogic MegaRAID 1.53> mem 0xff4f0000-0xff4fffff irq 27 at device 3.0 on pci2
amr0: <LSILogic MegaRAID SATA 150-6D> Firmware 713S, BIOS G121, 64MB RAM
amr1: <LSILogic MegaRAID 1.53> mem 0xff5f0000-0xff5fffff irq 28 at device 3.0 on pci3
amr1: <LSILogic MegaRAID SCSI 320-1> Firmware 1L45, BIOS G121, 128MB RAM
----------------
# uname -a
FreeBSD dasftp.das.local 8.2-RELEASE-p1 FreeBSD 8.2-RELEASE-p1 #0:
Mon Apr 25 23:11:34 PDT 2011
root@dasftp.das.local:/usr/obj/usr/src/sys/GENERIC
amd64
----------------
# dmesg -a | grep "CPU:"
CPU: AMD Opteron(tm) Processor 242 (1593.43-MHz K8-class CPU)
----------------
# sysctl hw | grep mem
root@dasftp Fri Jul 15 2011
hw.physmem: 8508891136
hw.usermem: 6397407232
hw.realmem: 8589934592
--
hw.pci.host_mem_start: 2147483648
----------------
# megarc -getxferrate -a0 -chall
**********************************************************************
Transfer Rate of Adapter-0 Channel-8 is 160M
**********************************************************************
# megarc -getxferrate -a1 -chall
**********************************************************************
Transfer Rate of Adapter-1 Channel-8 is 320M
**********************************************************************
----------------
# pciconf -lv | grep -A 4 "amr[01]"
amr0@pci0:2:3:0: class=0x010400 card=0x05231000 chip=0x19601000 rev=0x01 hdr=0x00
vendor = 'LSI Logic (Was: Symbios Logic, NCR)'
device = 'MegaRAID'
class = mass storage
subclass = RAID
--
amr1@pci0:3:3:0: class=0x010400 card=0x05201000 chip=0x19601000 rev=0x01 hdr=0x00
vendor = 'LSI Logic (Was: Symbios Logic, NCR)'
device = 'MegaRAID'
class = mass storage
subclass = RAID
Many thanks in advance.
Mark
--
--
Mark McConnell
markmc@dataabstractsolutions.com
Data Abstract Solutions - Support
12209 N.E. Fourth Plain Suite DD,
Vancouver WA 98682
ph: 360-573-5131 - fax: 360 573-0907
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