[Intel-xe] [PATCH 0/3] drm/xe: Add sysfs entry to report per gt memory size

[Upadhyay, Tejas]

Initiating discussion on sysfs path for this inline below :

> -----Original Message-----
> From: Upadhyay, Tejas <tejas.upadhyay at intel.com>
> Sent: Thursday, May 4, 2023 4:50 PM
> To: intel-xe at lists.freedesktop.org
> Cc: Upadhyay, Tejas <tejas.upadhyay at intel.com>; Iddamsetty, Aravind
> <aravind.iddamsetty at intel.com>
> Subject: [PATCH 0/3] drm/xe: Add sysfs entry to report per gt memory size
> 
> Add sysfs entry to read per gt physical memory in total including stolen
> memory.
> 
> The sysfs entry added can be read using:
> cat /sys/class/drm/card1/gt/gt0/addr_range
> cat /sys/class/drm/card1/gt/gt1/addr_range

We already have gt#num directory created under device folder, should we create addr_range under that only. I think that would be straight forward to start with.  For example,

/devices/pci0000:a7/0000:a7:01.0/0000:a8:00.0/0000:a9:01.0/0000:aa:00.0/drm/card1/gt0/addr_range

Initiating discussion there to conclude on path on this sysfs entry as well as scheduler interface entries as well as under "engine" folder under card1.

Please provide your inputs.

Thanks,
Tejas
> 
> As it involves drm_class, it required movement in xe_device init flow, patch
> for same is part of this series.
> 
> Actual physical memory per GT was dependent on infra patch from Ruhl,
> Michael J, so I have added it as part of this series to pass through pre-merge.
> Patchwork: https://patchwork.freedesktop.org/series/117126/#rev3
> 
> Cc: Aravind Iddamsetty <aravind.iddamsetty at intel.com>
> Signed-off-by: Tejas Upadhyay <tejas.upadhyay at intel.com>
> 
> Tejas Upadhyay (3):
>   drm/xe: Rework multi tile device memory initialization
>   drm/xe: Register drm device prior to gt init
>   drm/xe: Add sysfs entry to report per gt memory size
> 
>  drivers/gpu/drm/xe/regs/xe_gt_regs.h   |   2 +-
>  drivers/gpu/drm/xe/xe_bo.c             |   8 +-
>  drivers/gpu/drm/xe/xe_bo.h             |   2 +-
>  drivers/gpu/drm/xe/xe_device.c         |   8 +-
>  drivers/gpu/drm/xe/xe_device_types.h   |  20 +-
>  drivers/gpu/drm/xe/xe_gt_sysfs.c       |  74 ++++++-
>  drivers/gpu/drm/xe/xe_gt_sysfs.h       |   1 -
>  drivers/gpu/drm/xe/xe_gt_types.h       |  21 +-
>  drivers/gpu/drm/xe/xe_migrate.c        |   6 +-
>  drivers/gpu/drm/xe/xe_mmio.c           | 279 ++++++++++++++-----------
>  drivers/gpu/drm/xe/xe_mmio.h           |   4 +-
>  drivers/gpu/drm/xe/xe_ttm_stolen_mgr.c |  30 +--
>  12 files changed, 291 insertions(+), 164 deletions(-)
> 
> --
> 2.25.1