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[lwip-users] Nios datacashe problem
From: |
Jan Ulvesten |
Subject: |
[lwip-users] Nios datacashe problem |
Date: |
Fri, 7 Apr 2006 09:45:37 +0200 |
The problem is related to an unlucky sequence of machine instructions actually
found in pbuf_header's code (!). Removing the data cache or changing the size
(diff. from 32 bytes) will help. ALtera does oalso provide a fix.
But; the Altera fix didn't help me for some reason which I don't know. I did
remove the cache entirely. If you are able to make thins work after installing
the Altera fix, please inform me.
Jan Ulvesten
Senior Software Engineer
SICOM AS
-----Original Message-----
From: Etienne Lanoy [mailto:address@hidden
Sent: 7. april 2006 08:48
To: Mailing list for lwIP users
Subject: SPAM? [lwip-users] Pbuf assertion failure
Yes I'm using Altera Nios but I have search the patch for the Data cache
bug but
I've not found it.
I'm very desagree because in all my software I do the same action
tcp_write and after
tcp_output. There is no problem. Maybe something is broken in my
software but
I haven't any idea what can produce this assertion failure.
I thank you a lot for your help.
Best regards,
Etienne
Jan Ulvesten a écrit:
>Are you running Altera/Nios II?
>
>If yes, check out Altera website and/or niosforum.com. There is a
>problem with the Nios II data cache. A patch is available (to the IDE).
>
>Jan Ulvesten
>Senior Software Engineer
>SICOM AS
>Tel +47 72 89 56 55
>Fax +47 72 89 56 51
>Mob +47 416 62 033
>
>-----Original Message-----
>From: Etienne Lanoy [mailto:address@hidden
>Sent: 6. april 2006 14:21
>To: address@hidden
>Subject: SPAM? [lwip-users] Pbuf assertion failure
>
>Hello,
>
>I've a problem with an assertion in the file pbuf.c :
>In the function pbuf_free, the assertion
>
>LWIP_ASSERT("pbuf_free: sane flags",
> p->flags == PBUF_FLAG_RAM || p->flags == PBUF_FLAG_ROM ||
> p->flags == PBUF_FLAG_REF || p->flags == PBUF_FLAG_POOL);
>
>occur.
>
>Before that I have done a tcp_write and a tcp_output
>
>I've never see it before. Do you know what's happend ?
>
>I use it all arround my software and in my new piece of code I'm writing
>
>fail this assertion...
>I don't understand.
>
>I thank you a lot.
>
>Etienne
>
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Jan Ulvesten <=