On Nov 20, 2008, at 6:35 PM, David Gibson wrote:
On Thu, Nov 20, 2008 at 01:07:11PM -0600, Milton Miller wrote:
David Gibson wrote at 2008-11-18 00:28:28:
On Mon, Nov 17, 2008 at 01:41:24PM -0600, Timur Tabi wrote:
On Thu, Oct 23, 2008 at 9:54 PM, David Gibson
<[EMAIL PROTECTED]> wrote:
This
On Nov 21, 2008, at 10:13 AM, Timur Tabi wrote:
Milton Miller wrote:
We want the last console= parameter on the command line to win. So if
that implys the last call to add_preferred_console wins, then you have
code overriding the command line.
Hmm, good point. However, how likely is it that
Milton Miller wrote:
> We want the last console= parameter on the command line to win. So if
> that implys the last call to add_preferred_console wins, then you have
> code overriding the command line.
Hmm, good point. However, how likely is it that we'll have more than one
console driver? A
On Nov 20, 2008, at 1:16 PM, Timur Tabi wrote:
Milton Miller wrote:
Stated differently, if your routine (1) fundamently works one
character
at a time and (2) is not interrupt driven, and (3) only supports one
channel, what avantage is there to an explicit hvc driver?
I think it's because H
On Thu, Nov 20, 2008 at 01:07:11PM -0600, Milton Miller wrote:
> [I'm going to reply to several points in this thread in one reply. I
> have restored context that was trimmed in later replys when I wanted to
> speak to.]
>
> David Gibson wrote at 2008-11-18 00:28:28:
>> On Mon, Nov 17, 2008 at
On Thu, Nov 20, 2008 at 01:16:27PM -0600, Timur Tabi wrote:
> Milton Miller wrote:
>
> > Stated differently, if your routine (1) fundamently works one character
> > at a time and (2) is not interrupt driven, and (3) only supports one
> > channel, what avantage is there to an explicit hvc drive
Milton Miller wrote:
> Stated differently, if your routine (1) fundamently works one character
> at a time and (2) is not interrupt driven, and (3) only supports one
> channel, what avantage is there to an explicit hvc driver?
I think it's because HVC has the ability to use HVC client drivers
[I'm going to reply to several points in this thread in one reply. I
have restored context that was trimmed in later replys when I wanted to
speak to.]
David Gibson wrote at 2008-11-18 00:28:28:
On Mon, Nov 17, 2008 at 01:41:24PM -0600, Timur Tabi wrote:
On Thu, Oct 23, 2008 at 9:54 PM, Da
David Gibson wrote:
> Um.. yeah.. I'm a bit baffled by this.. all the existing backends
> are listed after hvc_console, I just added hvc_udbg to the end. I
> didn't really understand the rationale in that commit, but then I
> haven't had time to look at it very much yet.
No, some are before:
ob
On Tue, Nov 18, 2008 at 09:06:17AM -0600, Timur Tabi wrote:
> David Gibson wrote:
>
> > Given the variety of strange I/O configurations in prototype and
> > embedded platforms, I can't imagine this was a unique situation. So
> > I've pushed my patch out, so anyone else in a similar situation can
David Gibson wrote:
> Given the variety of strange I/O configurations in prototype and
> embedded platforms, I can't imagine this was a unique situation. So
> I've pushed my patch out, so anyone else in a similar situation can
> immediately turn their little udbg methods for whatever strange I/O
On Mon, Nov 17, 2008 at 10:42:46PM -0600, Timur Tabi wrote:
> On Mon, Nov 17, 2008 at 6:40 PM, David Gibson
> <[EMAIL PROTECTED]> wrote:
>
> > Because the udbg console works for kernel messages, but doesn't
> > support a full tty interface, so you can't run userspace with only a
> > udbg console.
On Mon, Nov 17, 2008 at 6:40 PM, David Gibson
<[EMAIL PROTECTED]> wrote:
> Because the udbg console works for kernel messages, but doesn't
> support a full tty interface, so you can't run userspace with only a
> udbg console.
I still don't understand the point of your driver. You're just
routing
On Mon, Nov 17, 2008 at 02:04:38PM -0600, Timur Tabi wrote:
> On Thu, Oct 23, 2008 at 9:54 PM, David Gibson
> <[EMAIL PROTECTED]> wrote:
>
> > This can be used to quickly implement a userspace usable console while
> > you're working on a proper driver for whatever console I/O device the
> > hardwa
On Mon, Nov 17, 2008 at 01:41:24PM -0600, Timur Tabi wrote:
> On Thu, Oct 23, 2008 at 9:54 PM, David Gibson
> <[EMAIL PROTECTED]> wrote:
> > This patch adds a new backend for the hvc console based on the
> > low-level udbg callbacks. This effectively implements a working
> > runtime console in ter
On Thu, Oct 23, 2008 at 9:54 PM, David Gibson
<[EMAIL PROTECTED]> wrote:
One other thing ...
> --- working-2.6.orig/drivers/char/Makefile 2008-10-22 15:50:59.0
> +1100
> +++ working-2.6/drivers/char/Makefile 2008-10-24 14:22:59.0 +1100
> @@ -50,6 +50,7 @@ obj-$(CONFIG_HVC_
On Thu, Oct 23, 2008 at 9:54 PM, David Gibson
<[EMAIL PROTECTED]> wrote:
> This can be used to quickly implement a userspace usable console while
> you're working on a proper driver for whatever console I/O device the
> hardware has. Or, it can be used to avoid writing a full blown
> tty/console
On Thu, Oct 23, 2008 at 9:54 PM, David Gibson
<[EMAIL PROTECTED]> wrote:
> This patch adds a new backend for the hvc console based on the
> low-level udbg callbacks. This effectively implements a working
> runtime console in terms of the simple udbg primitives. This is kind
> of a hack - since ud
dn't the Kconfig option depend on
> PPC?
Ah.. yes, yes it should. Forgot that hvconsole was used on
non-powerpc as well. Corrected patch below.
powerpc: udbg based backend for hvc_console
This patch adds a new backend for the hvc console based on the
low-level udbg callbacks. This effect
David Gibson writes:
> This patch adds a new backend for the hvc console based on the
> low-level udbg callbacks. This effectively implements a working
> runtime console in terms of the simple udbg primitives. This is kind
> of a hack - since udbg isn't something you really want to be using
> ro
This patch adds a new backend for the hvc console based on the
low-level udbg callbacks. This effectively implements a working
runtime console in terms of the simple udbg primitives. This is kind
of a hack - since udbg isn't something you really want to be using
routinely - but it's really useful
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