Date: Thu, 18 May 2000 13:22:36 +0800 From: dudin@np.nk.nornik.ru To: FreeBSD-gnats-submit@freebsd.org Subject: kern/18639: [PATCH] le driver doesn't work with DEPCA Message-ID: <200005180522.NAA25798@np.nk.nornik.ru>
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>Number: 18639
>Category: kern
>Synopsis: [PATCH] le driver doesn't work with DEPCA
>Confidential: no
>Severity: serious
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Wed May 17 22:30:00 PDT 2000
>Closed-Date:
>Last-Modified:
>Originator: Eugene A. Doudine
>Release: FreeBSD 3.2-RELEASE i386
>Organization:
Institute "Norilskproject"
>Environment:
FreeBSD mom.np.nk.nornik.ru 3.2-RELEASE FreeBSD 3.2-RELEASE #25: Wed May 17 00:31:35 KRAST 2000 root@mom.np.nk.nornik.ru:/usr/src/sys/compile/MOM i386
Digital DEPCA rev.E NIC
>Description:
DEPCA is not detected by driver.
(it can be sometimes detected, if other drivers probe DEPCA's
base address earlier in the boot process but doesn't work anyway)
The author of driver states, that driver has been tested only with
DE200 and later cards (/usr/src/sys/i386/isa/README.le), so this
behaviour is somewhat expected.
Unlike DE200 and later cards DEPCA has 8 bit NICSR, not 16 bit
as driver assumes, so OUTW/INW do not work with DEPCA. The higher
byte of NICSR is not used by driver, so I changed OUTW/INW to
OUTB/INB. This solved problem with detecting the board on boot.
The other problem was that board could transmit only several
packets and then transmission stopped.
DEPCA is based on AM7990 LANCE chip, which, unlike AM79C96,
restricts the sizes of descriptor rings to powers of 2.
So I added the check for this for DEPCA. I'm not sure which chip
DE100 and DE101 use, probably they need this fix as well.
Now driver works with DEPCA, but I have no chance to check
if it still works with other cards.
>How-To-Repeat:
100% reproducible ( if DEPCA fits into your computer case,
that is :-) )
>Fix:
--- i386/isa/if_le.c.orig Sun May 14 01:12:52 2000
+++ i386/isa/if_le.c Wed May 17 00:29:56 2000
@@ -1377,8 +1377,8 @@
#define DEPCA_NICSR_SHE 0x0080 /* Shared RAM Enabled (ie hide ROM) */
#define DEPCA_NICSR_BOOTTMO 0x0100 /* Remote Boot Timeout (ignored) */
-#define DEPCA_RDNICSR(sc) (LE_INW(sc, DEPCA_REG_NICSR))
-#define DEPCA_WRNICSR(sc, val) (LE_OUTW(sc, DEPCA_REG_NICSR, val))
+#define DEPCA_RDNICSR(sc) (LE_INB(sc, DEPCA_REG_NICSR))
+#define DEPCA_WRNICSR(sc, val) (LE_OUTB(sc, DEPCA_REG_NICSR, val))
#define DEPCA_IDSTR_OFFSET 0xC006 /* ID String Offset */
@@ -1546,10 +1546,17 @@
sc->lance_rxbufsize *= rxdescs / LN_DESC_MAX;
rxdescs = LN_DESC_MAX;
}
- txdescs = sc->lance_ramsize / LN_TXDESC_RATIO;
- if (txdescs > LN_DESC_MAX)
- txdescs = LN_DESC_MAX;
-
+ if (!strcmp(sc->le_prodname,"DEPCA")) {
+ txdescs = 1;
+ while (txdescs <= sc->lance_ramsize / LN_TXDESC_RATIO &&
+ txdescs <= LN_DESC_MAX)
+ txdescs *= 2;
+ txdescs /= 2;
+ } else {
+ txdescs = sc->lance_ramsize / LN_TXDESC_RATIO;
+ if (txdescs > LN_DESC_MAX)
+ txdescs = LN_DESC_MAX;
+ }
/*
* Now calculate where everything goes in memory
*/
>Release-Note:
>Audit-Trail:
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