From owner-freebsd-scsi  Tue Nov 23 12:38:25 1999
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Date: Tue, 23 Nov 1999 23:02:45 +0100 (MET)
From: Gerard Roudier <groudier@club-internet.fr>
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To: scsi@FreeBSD.org
Subject: NEWS: SYM53C1010 and Ultra3 support
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Hello,

I just got the appropriate cable this evening and started testing ultra3=20
support for the C1010. After a tiny fix in the SYM driver I got the
following:

Nov 23 22:39:58  /T35: (probe0:sym1:0:3:0): nego msgout:: 1-6-4-9-0-3e-1-2.
Nov 23 22:39:58  /T35: (probe0:sym1:0:3:0): ppr msg in: 1-6-4-9-0-1f-1-2.
Nov 23 22:39:58  /T35: (probe0:sym1:0:3:0): ppr: dt=3D2 ofs=3D31 per=3D9 wi=
de=3D1 div=3D0 fak=3D0 chg=3D0.
Nov 23 22:39:58  /T35: da2 at sym1 bus 0 target 3 lun 0
Nov 23 22:39:58  /T35: da2: <QUANTUM ATLAS IV 18 SCA 0808> Fixed Direct Acc=
ess SCSI-3 device=20
Nov 23 22:39:58  /T35: da2: 160.000MB/s transfers (80.000MHz, offset 31, 16=
bit), Tagged Queueing Enabled
Nov 23 22:39:58  /T35: da2: 17522MB (35885168 512 byte sectors: 255H 63S/T =
2233C)

For now, I just tried reads, and they seemed to work reliably.

By the way, the only hack I applied to SCSI is the following (scsi_all.c):

 static struct {
         u_int period_factor;
         u_int period;=09/* in 10ths of ns */
 } scsi_syncrates[] =3D {
+        { 0x09, 125 },
         { 0x0a, 250 },
         { 0x0b, 303 },
         { 0x0c, 500 }
 };

The sync period factor 9 is read by the driver from the controller NVRAM.
I will continue testing the beast.

For the full support of Ultra3, Justin will provide changes in CAM and
SCSI. The cam/scsi hacks I may add with further driver patches are just
minimal things that will be obviously discarded.=20

G=E9rard.



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