[PATCH 3/6] drm/xe/pcode: add struct drm_device based interface

[Rodrigo Vivi]

On Thu, Jun 05, 2025 at 01:29:35PM +0300, Jani Nikula wrote:
> In preparation for dropping the dependency on struct intel_uncore or
> struct xe_tile from display code, add a struct drm_device based
> interface to pcode.

great idea!

Reviewed-by: Rodrigo Vivi <rodrigo.vivi at intel.com>

> 
> Cc: Lucas De Marchi <lucas.demarchi at intel.com>
> Cc: Rodrigo Vivi <rodrigo.vivi at intel.com>
> Signed-off-by: Jani Nikula <jani.nikula at intel.com>
> ---
>  drivers/gpu/drm/xe/xe_pcode.c | 26 ++++++++++++++++++++++++++
>  drivers/gpu/drm/xe/xe_pcode.h | 12 +++++++++++-
>  2 files changed, 37 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/xe/xe_pcode.c b/drivers/gpu/drm/xe/xe_pcode.c
> index 9189117fe825..87323ad0cbbb 100644
> --- a/drivers/gpu/drm/xe/xe_pcode.c
> +++ b/drivers/gpu/drm/xe/xe_pcode.c
> @@ -336,3 +336,29 @@ int xe_pcode_probe_early(struct xe_device *xe)
>  	return xe_pcode_ready(xe, false);
>  }
>  ALLOW_ERROR_INJECTION(xe_pcode_probe_early, ERRNO); /* See xe_pci_probe */
> +
> +/* Helpers with drm device */
> +int intel_pcode_read(struct drm_device *drm, u32 mbox, u32 *val, u32 *val1)
> +{
> +	struct xe_device *xe = to_xe_device(drm);
> +	struct xe_tile *tile = xe_device_get_root_tile(xe);
> +
> +	return xe_pcode_read(tile, mbox, val, val1);
> +}
> +
> +int intel_pcode_write_timeout(struct drm_device *drm, u32 mbox, u32 val, int timeout_ms)
> +{
> +	struct xe_device *xe = to_xe_device(drm);
> +	struct xe_tile *tile = xe_device_get_root_tile(xe);
> +
> +	return xe_pcode_write_timeout(tile, mbox, val, timeout_ms);
> +}
> +
> +int intel_pcode_request(struct drm_device *drm, u32 mbox, u32 request,
> +			u32 reply_mask, u32 reply, int timeout_base_ms)
> +{
> +	struct xe_device *xe = to_xe_device(drm);
> +	struct xe_tile *tile = xe_device_get_root_tile(xe);
> +
> +	return xe_pcode_request(tile, mbox, request, reply_mask, reply, timeout_base_ms);
> +}
> diff --git a/drivers/gpu/drm/xe/xe_pcode.h b/drivers/gpu/drm/xe/xe_pcode.h
> index de38f44f3201..a5584c1c75f9 100644
> --- a/drivers/gpu/drm/xe/xe_pcode.h
> +++ b/drivers/gpu/drm/xe/xe_pcode.h
> @@ -7,8 +7,10 @@
>  #define _XE_PCODE_H_
>  
>  #include <linux/types.h>
> -struct xe_tile;
> +
> +struct drm_device;
>  struct xe_device;
> +struct xe_tile;
>  
>  void xe_pcode_init(struct xe_tile *tile);
>  int xe_pcode_probe_early(struct xe_device *xe);
> @@ -32,4 +34,12 @@ int xe_pcode_request(struct xe_tile *tile, u32 mbox, u32 request,
>  	| FIELD_PREP(PCODE_MB_PARAM1, param1)\
>  	| FIELD_PREP(PCODE_MB_PARAM2, param2))
>  
> +/* Helpers with drm device */
> +int intel_pcode_read(struct drm_device *drm, u32 mbox, u32 *val, u32 *val1);
> +int intel_pcode_write_timeout(struct drm_device *drm, u32 mbox, u32 val, int timeout_ms);
> +#define intel_pcode_write(drm, mbox, val) \
> +	intel_pcode_write_timeout((drm), (mbox), (val), 1)
> +int intel_pcode_request(struct drm_device *drm, u32 mbox, u32 request,
> +			u32 reply_mask, u32 reply, int timeout_base_ms);
> +
>  #endif
> -- 
> 2.39.5
>