Fwd: [Swsusp-devel] Kernel 2.6 pm_send_all() issues.

Fwd: [Swsusp-devel] Kernel 2.6 pm_send_all() issues.

[Michael Frank]

This question is probably better suited for LKML.

----------  Forwarded Message  ----------

Subject: [Swsusp-devel] Kernel 2.6 pm_send_all() issues.
Date: Tuesday 10 February 2004 04:06
From: Wolfgang Glas <wolfgang.glas@ev-i.at>
To: swsusp-devel@lists.sourceforge.net

Coming back to an earlier post, which states, that NVidia suspend/resume under 
2.6.x could be resurrected, if  drivers_suspend() and drivers_resume() in 
swsusp.c are tuned in a way, that pm_send_all() is called, I want to direct 
the following question to more eligible persons in this list:

  I inspected NVidia's driver and I found out, that it's implemented as a 
character device and hence does not implement the suspend/resume kernel 
driver interface, which has been introduced in linux-2.6. But nevertheless 
this driver has the ability to register its own power management handler 
through pm_register(), an interface already present in linux-2.4 and still 
used in some 20 drivers present in the linux-2.6.1 code base, most notable 
some audio driver and some irda drivers.

  Diving further into the code, I recognized, that the kernel function 
ppm_send_all(), which calls all handlers registered through pm_register() is 
never called inside of swsusp2.c

  So, what I want to ask is, whether the pm_register/pm_send/pm_send_all 
interface is simply deprecated and the NVidia driver (and other drivers, 
which use pm_register) should be reeingineered in order to use the 
resume/suspend interface of linux-2.6. Or should we try to modify swsusp2.c 
in a way, that it additionally calls  pm_send_all for these drivers?

   TIA,

      Wolfgang


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Re: Fwd: [Swsusp-devel] Kernel 2.6 pm_send_all() issues.

[Benjamin Herrenschmidt]

On Wed, 2004-02-11 at 02:43, Michael Frank wrote:
> This question is probably better suited for LKML.

Get nVidia to fix their drivers. pm_send_all() stuff is deprecated
and isn't called on purpose. Some of the handlers for these old-style
calls were doing weird stuff I'd rather not do again ;)

Ben.

Re: Fwd: [Swsusp-devel] Kernel 2.6 pm_send_all() issues.

[Stephen Hemminger]

Michael Frank wrote:

> This question is probably better suited for LKML.
> 
> ----------  Forwarded Message  ----------
> 
> Subject: [Swsusp-devel] Kernel 2.6 pm_send_all() issues.
> Date: Tuesday 10 February 2004 04:06
> From: Wolfgang Glas <wolfgang.glas@ev-i.at>
> To: swsusp-devel@lists.sourceforge.net
> 
> Coming back to an earlier post, which states, that NVidia suspend/resume under 
> 2.6.x could be resurrected, if  drivers_suspend() and drivers_resume() in 
> swsusp.c are tuned in a way, that pm_send_all() is called, I want to direct 
> the following question to more eligible persons in this list:
> 
>   I inspected NVidia's driver and I found out, that it's implemented as a 
> character device and hence does not implement the suspend/resume kernel 
> driver interface, which has been introduced in linux-2.6. But nevertheless 
> this driver has the ability to register its own power management handler 
> through pm_register(), an interface already present in linux-2.4 and still 
> used in some 20 drivers present in the linux-2.6.1 code base, most notable 
> some audio driver and some irda drivers.
> 
>   Diving further into the code, I recognized, that the kernel function 
> ppm_send_all(), which calls all handlers registered through pm_register() is 
> never called inside of swsusp2.c
> 
>   So, what I want to ask is, whether the pm_register/pm_send/pm_send_all 
> interface is simply deprecated and the NVidia driver (and other drivers, 
> which use pm_register) should be reeingineered in order to use the 
> resume/suspend interface of linux-2.6. Or should we try to modify swsusp2.c 
> in a way, that it additionally calls  pm_send_all for these drivers?
> 
>    TIA,
> 
>       Wolfgang

I sent them a patch that converts the PCI device to the device model and
uses suspend/resume hooks.  But they didn't seem to put it in the 
current version

Re: Fwd: [Swsusp-devel] Kernel 2.6 pm_send_all() issues.

[Nils Rennebarth]

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Stephen Hemminger wrote:
> I sent them a patch that converts the PCI device to the device model and
> uses suspend/resume hooks.  But they didn't seem to put it in the 
> current version
Could you make the patch publicly available somewhere?

I'm currently using swsusp on 2.6.2 with the XFree86 4.3.0 nv driver
which sort of works, but it lacks 3D of course.


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