[PATCH 6/6] drm/xe/xe3lpm: Add new "instance0" steering table

[Taylor, Clinton A]

Reviewed-by: Clint Taylor <Clinton.A.Taylor at intel.com>

-Clint

On Fri, 2024-10-04 at 15:05 -0700, Matt Atwood wrote:
> From: Matt Roper <matthew.d.roper at intel.com>
> 
> MCR steering on Xe3 media IP is almost the same as it was on Xe2,
> except
> for one new range (0x38D0D0 - 0x38D0FF) which has changed to an MCR
> "MEDIAINF" range on Xe3.  Since we can always steer to to grpid /
> instanceid 0 for MEDIAINF ranges, define a new "INSTANCE0" steering
> table for Xe3 media.  Xe3 can continue to use the same OADDRM/GPMXMT
> table as Xe2.
> 
> Bspec: 74298
> Signed-off-by: Matt Roper <matthew.d.roper at intel.com>
> Signed-off-by: Matt Atwood <matthew.s.atwood at intel.com>
> ---
>  drivers/gpu/drm/xe/xe_gt_mcr.c | 17 ++++++++++++++++-
>  1 file changed, 16 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/xe/xe_gt_mcr.c
> b/drivers/gpu/drm/xe/xe_gt_mcr.c
> index 4c0767403881..2f2fb84b4e58 100644
> --- a/drivers/gpu/drm/xe/xe_gt_mcr.c
> +++ b/drivers/gpu/drm/xe/xe_gt_mcr.c
> @@ -237,6 +237,18 @@ static const struct xe_mmio_range
> xe2lpm_instance0_steering_table[] = {
>         {},
>  };
>  
> +static const struct xe_mmio_range xe3lpm_instance0_steering_table[]
> = {
> +       { 0x384000, 0x3847DF },         /* GAM, rsvd, GAM */
> +       { 0x384900, 0x384AFF },         /* GAM */
> +       { 0x389560, 0x3895FF },         /* MEDIAINF */
> +       { 0x38B600, 0x38B8FF },         /* L3BANK */
> +       { 0x38C800, 0x38D07F },         /* GAM, MEDIAINF */
> +       { 0x38D0D0, 0x38D0FF },         /* MEDIAINF */
> +       { 0x38F000, 0x38F0FF },         /* GAM */
> +       { 0x393C00, 0x393C7F },         /* MEDIAINF */
> +       {},
> +};
> +
>  static void init_steering_l3bank(struct xe_gt *gt)
>  {
>         struct xe_mmio *mmio = &gt->mmio;
> @@ -441,7 +453,10 @@ void xe_gt_mcr_init(struct xe_gt *gt)
>         if (gt->info.type == XE_GT_TYPE_MEDIA) {
>                 drm_WARN_ON(&xe->drm, MEDIA_VER(xe) < 13);
>  
> -               if (MEDIA_VERx100(xe) >= 1301) {
> +               if (MEDIA_VER(xe) >= 30) {
> +                       gt->steering[OADDRM].ranges =
> xe2lpm_gpmxmt_steering_table;
> +                       gt->steering[INSTANCE0].ranges =
> xe3lpm_instance0_steering_table;
> +               } else if (MEDIA_VERx100(xe) >= 1301) {
>                         gt->steering[OADDRM].ranges =
> xe2lpm_gpmxmt_steering_table;
>                         gt->steering[INSTANCE0].ranges =
> xe2lpm_instance0_steering_table;
>                 } else {