Re: port-alpha/33073 (isp0: unable to load dma (22))

[Michael Haardt <michael%moria.de@localhost>]

> Looks like the instkernel here will have the change:
> 
> 	http://nycdn.netbsd.org/pub/NetBSD-daily/HEAD/202107200810Z/alpha/installation/instkernel/

Thanks, I booted that and installed NetBSD.  With 9.2, ethernet media
auto selection worked.  With HEAD it no longer does:

[ 337.1011682] tlp0: transmit timeout
# ifconfig tlp0
tlp0: flags=0x8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        ec_capabilities=0x1<VLAN_MTU>
        ec_enabled=0
        address: 00:00:f8:76:0e:39
        media: Ethernet autoselect instance 1 (none)
        inet 10.128.0.15/8 broadcast 10.255.255.255 flags 0

Manually configuring it helps:

# ifconfig tlp0 media 100baseTX-FDX
# ifconfig tlp0
tlp0: flags=0x8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        ec_capabilities=0x1<VLAN_MTU>
        ec_enabled=0
        address: 00:00:f8:76:0e:39
        media: Ethernet 100baseTX full-duplex instance 1
        status: active
        inet 10.128.0.15/8 broadcast 10.255.255.255 flags 0x1<TENTATIVE>

I see nothing odd during booting, but wonder if "auto" should have been
propagated from nsphy0 to tlp0:

[   1.0000000] cia0 at mainbus0: DECchip 2117x Core Logic Chipset (Pyxis), pass 2
[   1.0000000] cia0: extended capabilities: 0x1<BWEN>
[   1.0000000] cia0: using BWX for PCI config access
[   1.0000000] pci0 at cia0 bus 0
[   1.0000000] pci0: i/o space, memory space enabled, rd/line, rd/mult, wr/inv ok
[   1.0000000] tlp0 at pci0 dev 3 function 0: DECchip 21143 Ethernet, pass 3.0
[   1.0000000] tlp0: interrupting at dec 550 irq 0
[   1.0000000] tlp0: DEC, Ethernet address 00:00:f8:76:0e:39
[   1.0000000] nsphy0 at tlp0 phy 5: DP83840 10/100 media interface, rev. 1
[   1.0000000] nsphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
[   1.0000000] tlp0: 10baseT, 10baseT-FDX, 10base2, 10base5

The speed during unpacking the sets is only around 250-300 KiB/s.
My switch says:

	Pkts64Octets	550	 	 	 
 	Pkts65to127Octets	43,441	 	 	 
 	Pkts128to255Octets	126,463 <-- only small packets?
 	Pkts256to511Octets	49	 	 	 
 	Pkts512to1023Octets	32	 	 	 
 	Pkts1024to1518Octets	0

During unpacking, I see a flood of "Warning: received processor
correctable error."  Is there any additional information which component
of the system may be causing that?

Anyway: The DMA problems are gone and unpacking the sets to the disk
finishes.  I guess none of the above is related to port-alpha/33073,
but I wanted to mention it nevertheless.  Thanks for fixing this one!

Michael