Subject: Cobalt Raq: DMA mode
To: None <>
From: Sergey Sysoev <>
List: port-cobalt
Date: 07/21/2003 10:05:49

Now I can confirm that the DMA mode is the reason of install's fault on
on Cobalt Raq, in case of a normal (1st) recover cd by Dennis.   

I've rebuilt kernel from the 1.6.1 cvs and it works only with disabled
DMA (kernel 0x0ffc mode). So... :(


Cobalt Raq (RM5230-Q150)
Built Mon Aug 24 14:44:00 PDT 1998

NetBSD 1.6.1 (COBALT-RM5230) #0: Mon Jul 21 03:37:18 UTC 2003
49152 KB memory, 43224 KB free, 2560 KB in 640 buffers
mainbus0 (root)
com0 at mainbus0 addr 0x1c800000 level 3: st16650a, working fifo
com0: console
cpu0 at mainbus0: QED RM5200 CPU (0x2810) Rev. 1.0 with built-in FPU Rev. 1.0
cpu0: 16KB/32B 2-way set-associative L1 Instruction cache, 48 TLB entries
cpu0: 16KB/32B 2-way set-associative write-back L1 Data cache

pciide0 at pci0 dev 9 function 1: VIA Technologies VT82C586 (Apollo VP) ATA33 controller
pciide0: bus-master DMA support present
pciide0: primary channel configured to compatibility mode
wd0 at pciide0 channel 0 drive 0: <QUANTUM FIREBALL EL2.5A>
wd0: drive supports 16-sector PIO transfers, LBA addressing
wd0: 2445 MB, 5300 cyl, 15 head, 63 sec, 512 bytes/sect x 5008500 sectors
wd0: 32-bit data port
wd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 2 (Ultra/33)
pciide0: primary channel interrupting at irq 14
wd0(pciide0:0:0): using PIO mode 4
pciide0: secondary channel configured to compatibility mode
pciide0: secondary channel ignored (disabled)

Best regards, Sergey

SS> I  want  to say thanks to all and especially to Dennis for his install
SS> disk  image.  NoDMA  image  works  fine  on Cobalt Raq1.


SS> It  seems that 1st image with DMA has some problems with Raq1 but I am
SS> not sure 100% and will try after a while.