lkml.org 
[lkml]   [1999]   [Dec]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
SubjectRe: 2.2.13 networking: packets delayed by many seconds

On 02-Dec-99 Wolfgang Walter wrote:
> It's probably a bug in tulip 0.91g. It switches of interrupts if it thinks
> there are to many and starts a timer of the card.
>
> But it does not handle the timer interrupt correctly, so interrupts are not
> aktivated again.
>
> There are a lot of other problems, too. But they should be in 0.89H, too :-).
>
> Would be nice if you send me a mail if this was the problem.

The 21143 has interrupt mitigation, so it doesn't use this
mechanism, since the chip does much the same thing internally.

I'm using this patch against .91g:

@@ -365,6 +365,7 @@
HAS_PWRDWN=0x10, MC_HASH_ONLY=0x20, /* Hash-only multicast filter. */
HAS_PNICNWAY=0x80, HAS_NWAY143=0x40, /* Uses internal NWay xcvr. */
HAS_8023X=0x100,
+ HAS_INTR_MITIGATION=0x200,
};
static struct tulip_chip_table {
char *chip_name;
@@ -378,7 +379,7 @@
{ "Digital DS21140 Tulip", 128, 0x0001ebef,
HAS_MII | HAS_MEDIA_TABLE | CSR12_IN_SROM, tulip_timer },
{ "Digital DS21143 Tulip", 128, 0x0801fbff,
- HAS_MII | HAS_MEDIA_TABLE | ALWAYS_CHECK_MII | HAS_PWRDWN | HAS_NWAY143,
+ HAS_MII | HAS_MEDIA_TABLE | ALWAYS_CHECK_MII | HAS_PWRDWN | HAS_NWAY143
| HAS_INTR_MITIGATION,
t21142_timer },
{ "Lite-On 82c168 PNIC", 256, 0x0001ebef,
HAS_MII | HAS_PNICNWAY, pnic_timer },
@@ -2752,9 +2753,13 @@
"csr5=0x%8.8x.\n", dev->name, csr5);
/* Acknowledge all interrupt sources. */
outl(0x8001ffff, ioaddr + CSR5);
- /* Clear all interrupting sources, set timer to
re-enable. */
- outl(((~csr5) & 0x0001ebef) | 0x0800, ioaddr + CSR7);
- outl(12, ioaddr + CSR11);
+ if (tp->flags & HAS_INTR_MITIGATION)
+ outl(0x45240000, ioaddr + CSR11);
+ else {
+ /* Clear all interrupting sources, set timer to
re-enable. */
+ outl(((~csr5) & 0x0001ebef) | 0x0800, ioaddr +
CSR7);
+ outl(12, ioaddr + CSR11);
+ }
break;
}
} while (1);
J

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:55    [W:0.045 / U:0.784 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site