All of lore.kernel.org
 help / color / mirror / Atom feed
From: "jerry" <jerry.nguyen@serialsystem.com.sg>
To: <linuxppc-embedded@lists.linuxppc.org>
Subject: how to get the physival address
Date: Thu, 5 Apr 2001 12:13:29 +0800	[thread overview]
Message-ID: <001001c0bd86$c54562a0$de0fa8c0@mystore> (raw)
In-Reply-To: 20010404155419.8B369281DB@denx.denx.de


Hi All,

I have a silly question but seem I can not figure out the answer myself. I
try write a driver, in which I define a array like"

file : dummy.o

unsigned  char buffer_array[4096];

....

bdp->cbd_bufaddr  =  __pa(buffer_array);


my problem is: I try to get the physical address of buffer array, but the
_pa did not return correct address.

I try to print out:  buffer_array = 0xC4056220
                        _pa(buffer_array) = 0x4056220

But my RAM only 16M = 0x100000

My question is: how to get the physical address of buffer_array.

Thank for any answer
Jerry


** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/

  reply	other threads:[~2001-04-05  4:13 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-04-04  0:57 gdb load address and KERNELLOAD Wang Yong
2001-04-04  2:05 ` Dan Malek
2001-04-04  6:42   ` Wolfgang Denk
2001-04-04 15:30     ` Dan Malek
2001-04-04 15:54       ` Wolfgang Denk
2001-04-05  4:13         ` jerry [this message]
2001-04-05  5:58           ` how to get the physival address Dan Malek
2001-04-05  6:28             ` jerry
2001-04-05  6:30               ` Dan Malek
2001-04-05  9:16             ` Gabriel Paubert
  -- strict thread matches above, loose matches on Subject: below --
2001-04-05 16:58 Hua Ji

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='001001c0bd86$c54562a0$de0fa8c0@mystore' \
    --to=jerry.nguyen@serialsystem.com.sg \
    --cc=linuxppc-embedded@lists.linuxppc.org \
    /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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.