Messages in this thread | | | Date | Wed, 22 Sep 1999 13:20:54 +0200 (CEST) | From | Michael Leodolter <> | Subject | Re: aic-5.1.19 AHA-3985W |
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On Mon, 20 Sep 1999, Doug Ledford wrote:
> Michael Leodolter wrote: > > > > -----BEGIN PGP SIGNED MESSAGE----- > > > > Hi Doug! > > > > We have a Adaptec 3985W (PCI_DEVICE_ID_ADAPTEC_7873) board with 9 4.5Gb > > disks, 3 on each channel - > > and were still running linux-2.0.33/aic7xxx-4.1.1 - > > > > Now did upgrade to 2.2.12 with aic7xxx-5.1.19: > > After lots of problems I looked into the old driver from 2.0.33 and saw: > > > > The external SCB RAM on the 3985W does not work and was disabled by > > #ifdef AIC7XXX_USE_EXT_SCBRAM. > > > > With the following patch to linux-2.2.12/aic7xxx.c-5.1.19 everything works > > fine. > > > > Maybe this is needed only for > > temp_p->device_id == PCI_DEVICE_ID_ADAPTEC_7873. > > > > - --- cut here --- > > - --- aic7xxx.c.orig Mon Sep 13 10:13:58 1999 > > +++ aic7xxx.c Mon Sep 13 14:26:47 1999 > > @@ -9966,12 +9966,14 @@ > > devconfig |= EXTSCBPEN; > > } > > } > > +#ifdef AIC7XXX_USE_EXT_SCBRAM > > else if (devconfig & RAMPSM) > > { > > devconfig &= ~SCBRAMSEL; > > devconfig |= EXTSCBPEN; > > temp_p->flags |= AHC_EXTERNAL_SRAM; > > } > > +#endif > > #if LINUX_VERSION_CODE > KERNEL_VERSION(2,1,92) > > pci_write_config_dword(pdev, DEVCONFIG, devconfig); > > #else > > > Hmmm....a 3985W that uses the 7883 device ID should never get there. The You are right! (it's a 7873 on a 3985W - and never gets there !!!). > switch statement that enloses that code says: > > switch(temp_p->chip & AHC_CHIPID_MASK) > { > default: > break; > case AHC_AIC7895: > case AHC_AIC7896: > case AHC_AIC7899: > ..... > } > > So, as you can see, the change you made shouldn't make a difference. Now, if > you have one of the later model 3985 cards that uses the 7895 chipset, then > this all makes perfect sense. In any case, I've modified the current driver > with the following: > > /* > * On some machines, enabling the external SCB RAM isn't reliable yet. I > * haven't had time to make test patches for things like changing the > * timing mode on that external RAM either. Some of those changes may > * fix the problem. Until then though, we default to external SCB RAM > * off and give a command line option to enable it. > */ > static int aic7xxx_scbram = 0; Please revert ! > > > and I modified the code inside the switch statement to honor this global > variable that the setup code can modify. That should solve your problem and > will be in the next official release. Sorry! Our problem was solved by setting
CONFIG_AIC7XXX_CMDS_PER_DEVICE=8
in the kernel .config file.
(we have 4 3year old Quantum XP34300W (Atlas I 4.5Gb) disks)
michael -------------------------------------------------------- - Michael Leodolter Brain Research Lab (BRL) - - Inst. of Psychology Univ. of Vienna - - EMail: Michael.Leodolter@univie.ac.at - - Tel: ++43-1-4277-478-28 Fax: ++43-1-4277-478-59 - --------------------------------------------------------
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