linux-kernel - RE: [Intel-xe] [PATCH v2 0/4] drm/xe/gsc: add initial gsc support

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Date:   Wed, 20 Sep 2023 06:15:51 +0000
From:   "Usyskin, Alexander" <alexander.usyskin@...el.com>
To:     "Vivi, Rodrigo" <rodrigo.vivi@...el.com>
CC:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "De Marchi, Lucas" <lucas.demarchi@...el.com>,
        "Ceraolo Spurio, Daniele" <daniele.ceraolospurio@...el.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "Winkler, Tomas" <tomas.winkler@...el.com>,
        "intel-xe@...ts.freedesktop.org" <intel-xe@...ts.freedesktop.org>
Subject: RE: [Intel-xe] [PATCH v2 0/4] drm/xe/gsc: add initial gsc support



> -----Original Message-----
> From: Vivi, Rodrigo <rodrigo.vivi@...el.com>
> Sent: Monday, September 18, 2023 19:07
> To: Usyskin, Alexander <alexander.usyskin@...el.com>
> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>; De Marchi, Lucas
> <lucas.demarchi@...el.com>; Ceraolo Spurio, Daniele
> <daniele.ceraolospurio@...el.com>; linux-kernel@...r.kernel.org; Winkler,
> Tomas <tomas.winkler@...el.com>; intel-xe@...ts.freedesktop.org
> Subject: Re: [Intel-xe] [PATCH v2 0/4] drm/xe/gsc: add initial gsc support
> 
> On Thu, Sep 14, 2023 at 11:01:34AM +0300, Alexander Usyskin wrote:
> > Add initial GSC support for DG1 and DG2.
> > Create mei-gscfi auxiliary device and add
> > support for device created by Xe to the mei-gsc driver.
> 
> why are we not adding the GSC already? because dependency on the GSC
> engine or something like that?
> 

The DG1 and DG2 have only HECI-GSC routed via mei.
The pure GSC without mei is for later projects.

-- 
Thanks,
Sasha


> >
> > This series intended to be merged intto Xe tree,
> > the only patch that touches char-misc is addition
> > of id and alias in mei-gsc.
> >
> > V2: Added heci_ to struct and APIs
> >     heci_gsc moved under xe_device as GSC is not under GT
> >
> > Signed-off-by: Alexander Usyskin <alexander.usyskin@...el.com>
> >
> > Vitaly Lubart (4):
> >   drm/xe/gsc: add HECI2 register offsets
> >   drm/xe/gsc: add has_heci_gscfi indication to device
> >   drm/xe/gsc: add gsc device support
> >   mei: gsc: add support for auxiliary device created by Xe driver
> >
> >  drivers/gpu/drm/xe/Kconfig           |   1 +
> >  drivers/gpu/drm/xe/Makefile          |   1 +
> >  drivers/gpu/drm/xe/regs/xe_regs.h    |   4 +
> >  drivers/gpu/drm/xe/xe_device.c       |   4 +
> >  drivers/gpu/drm/xe/xe_device_types.h |   7 +
> >  drivers/gpu/drm/xe/xe_heci_gsc.c     | 205
> +++++++++++++++++++++++++++
> >  drivers/gpu/drm/xe/xe_heci_gsc.h     |  35 +++++
> >  drivers/gpu/drm/xe/xe_irq.c          |  14 +-
> >  drivers/gpu/drm/xe/xe_pci.c          |   9 +-
> >  drivers/misc/mei/gsc-me.c            |   5 +
> >  10 files changed, 281 insertions(+), 4 deletions(-)
> >  create mode 100644 drivers/gpu/drm/xe/xe_heci_gsc.c
> >  create mode 100644 drivers/gpu/drm/xe/xe_heci_gsc.h
> >
> > --
> > 2.34.1
> >