From: "Ling Su" <lingsu@palmmicro.com>
To: "Nick Garnett" <nickg@cygnus.co.uk>
Cc: "Jonathan Larmour" <jlarmour@redhat.com>,
<ecos-discuss@sources.redhat.com>
Subject: Re: [ECOS] How to access PCI memory(HELP)....
Date: Tue, 12 Sep 2000 11:07:00 -0000 [thread overview]
Message-ID: <002801c01ce4$4a3f7d90$0201a8c0@raccoon> (raw)
In-Reply-To: <poog1undfp.fsf@balti.cygnus.co.uk>
>
> I responded to your previous message before I saw this one. As I said
> there, I think that adjusting HAL_PHYSICAL_MEMORY_BASE so that the CPU
> addr ends up at 0xD000_0000 will fix your problem.
>
> I guess HAL_PHYSICAL_MEMORY_BASE is probably misnamed, it should
> really be HAL_PHYSICAL_MEMORY_OFFSET. It only works as a base when the
> PCI memory allocation starts at zero.
>
Hi, Nick,
Yeah, I think I can understand your suggestion, unfortuantely I still met
segment fault. I append my log message in the end, please take a look, I
don't exactly the memory mapping for eCos in vrc4373 board. I guess there is
something wrong on the PCI space and memory space. Could you let me know how
can I trace the SIGSEGV and the segment fault, so that I can figure out
which part is wrong. I don't quiet understand why I can not access
0xD000_0000 at all.
Thanks a lot!
Best Rgds,
-Ling
======================================================
(gdb) cont
Continuing.
Found device on bus 0, devfn 0x10:
Device configuration succeeded
**** Device IO and MEM access enabled
Vendor 0x1688
Device 0x8888
Command 0x0000, Status 0x0280
Class/Rev 0x07800001
Header 0x11FF0F
SubVendor 0x1111, Sub ID 0xFF1A
BAR[0] 0x90000000 / probed size 0xFFF00000 / CPU addr 0xD0000000
BAR[1] 0x00000000 / probed size 0x00000000 / CPU addr 0xFFFFFFFF
BAR[2] 0x00000000 / probed size 0x00000000 / CPU addr 0xFFFFFFFF
BAR[3] 0x00000000 / probed size 0x00000000 / CPU addr 0xFFFFFFFF
BAR[4] 0x00000000 / probed size 0x00000000 / CPU addr 0xFFFFFFFF
BAR[5] 0x00000000 / probed size 0x00000000 / CPU addr 0xFFFFFFFF
Wired to HAL vector 13
Current pci base is D0000000
[New thread 3]
Program received signal SIGSEGV, Segmentation fault.
[Switching to thread 3]
0x80100bb8 in pci_test () at pcitest.c:293
293 (*(pci_base + 0x004)) = 0x0000;
Current language: auto; currently c
(gdb)
next prev parent reply other threads:[~2000-09-12 11:07 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-09-11 21:05 [ECOS] Fw: " Ling Su
2000-09-12 2:56 ` [ECOS] " Nick Garnett
2000-09-12 11:07 ` Ling Su [this message]
2000-09-13 3:09 ` Nick Garnett
2000-09-12 15:52 ` [ECOS] Anyway to access the 7 segment display on NEC vrc4373 board? Ling Su
2000-09-13 11:58 ` [ECOS] " Jonathan Larmour
2000-09-12 18:31 ` [ECOS] Problem on allocate PCI memory space Ling Su
2000-09-13 3:19 ` [ECOS] " Nick Garnett
2000-09-13 12:40 ` Ling Su
2000-09-13 17:41 ` Ling Su
2000-09-14 3:32 ` Nick Garnett
2000-09-14 3:43 ` Andrew Lunn
2000-09-14 14:46 ` Ling Su
2000-09-14 14:51 ` Jonathan Larmour
2000-09-14 17:53 ` Ling Su
2000-09-14 3:08 ` Nick Garnett
-- strict thread matches above, loose matches on Subject: below --
2002-06-13 4:59 [ECOS] How to access PCI memory(HELP) namita chawla
2002-06-13 9:20 ` David N. Welton
2002-06-13 9:28 ` Stephen Polkowski
2000-09-08 11:43 Ling Su
2000-09-10 19:44 ` Jonathan Larmour
2000-09-10 19:48 ` Jonathan Larmour
2000-09-10 20:39 ` Ling Su
2000-09-10 21:29 ` Jonathan Larmour
2000-09-11 3:59 ` Nick Garnett
2000-09-11 11:47 ` Ling Su
2000-09-12 2:33 ` Nick Garnett
2000-09-12 12:10 ` Ling Su
2000-09-12 16:56 ` Ling Su
2000-09-13 3:04 ` Nick Garnett
2000-09-11 11:34 ` Ling Su
2000-09-11 11:38 ` Jonathan Larmour
2000-09-11 11:39 ` Ling Su
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='002801c01ce4$4a3f7d90$0201a8c0@raccoon' \
--to=lingsu@palmmicro.com \
--cc=ecos-discuss@sources.redhat.com \
--cc=jlarmour@redhat.com \
--cc=nickg@cygnus.co.uk \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).