From mboxrd@z Thu Jan  1 00:00:00 1970
From: daniel.redway85@gmail.com (Daniel Redway)
Date: Sat, 11 Jun 2011 10:58:51 +0300
Subject: writing pci device driver
Message-ID: <BANLkTinx7KgA=-apjjFeSZeQpReE+t3dWg@mail.gmail.com>
To: kernelnewbies@lists.kernelnewbies.org
List-Id: kernelnewbies.lists.kernelnewbies.org

Hi
I have some question about writing device driver.
I am reading some books and text.

1) I have device which have memory space 1 mb. and I mapped this memory
using pci_iomap function.
I read some text and they said if device need access mapped memory, you set
the command register in configuration space.
But which bit will ve set? only is enough only bit set
PCI_COMMAND_MEMORY<http://lxr.linux.no/linux+*/+code=PCI_COMMAND_MEMORY>
?

2) I dont want to use dma first step. Maybe next time I will be use.
PCI_COMMAND_MASTER <http://lxr.linux.no/linux+*/+code=PCI_COMMAND_MASTER>
this command  bit is only set when I use dma ? is it true?


thanks.
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