[PATCH 1/2] drm/xe/vf: Read VF configuration prior to GGTT initialization

[Michał Winiarski]

On Fri, May 24, 2024 at 01:37:13PM +0200, Michal Wajdeczko wrote:
> Each VF will be assigned with only a limited range of the GGTT
> address space. Make sure that VF driver will read its own GGTT
> configuration before starting any GGTT initialization.
> 
> Signed-off-by: Michal Wajdeczko <michal.wajdeczko at intel.com>

Reviewed-by: Michał Winiarski <michal.winiarski at intel.com>

-Michał

> ---
>  drivers/gpu/drm/xe/xe_device.c | 11 +++++++++++
>  1 file changed, 11 insertions(+)
> 
> diff --git a/drivers/gpu/drm/xe/xe_device.c b/drivers/gpu/drm/xe/xe_device.c
> index 5acf2c92789f..f04b11e45c2d 100644
> --- a/drivers/gpu/drm/xe/xe_device.c
> +++ b/drivers/gpu/drm/xe/xe_device.c
> @@ -35,6 +35,8 @@
>  #include "xe_gt.h"
>  #include "xe_gt_mcr.h"
>  #include "xe_gt_printk.h"
> +#include "xe_gt_sriov_vf.h"
> +#include "xe_guc.h"
>  #include "xe_hwmon.h"
>  #include "xe_irq.h"
>  #include "xe_memirq.h"
> @@ -569,6 +571,15 @@ int xe_device_probe(struct xe_device *xe)
>  	}
>  
>  	for_each_tile(tile, xe, id) {
> +		if (IS_SRIOV_VF(xe)) {
> +			xe_guc_comm_init_early(&tile->primary_gt->uc.guc);
> +			err = xe_gt_sriov_vf_bootstrap(tile->primary_gt);
> +			if (err)
> +				return err;
> +			err = xe_gt_sriov_vf_query_config(tile->primary_gt);
> +			if (err)
> +				return err;
> +		}
>  		err = xe_ggtt_init_early(tile->mem.ggtt);
>  		if (err)
>  			return err;
> -- 
> 2.43.0
>