[Intel-xe] [PATCH 2/3] drm/xe: Add dbg messages for LRC WAs

[Matt Roper]

On Tue, Sep 05, 2023 at 07:31:43AM -0700, Lucas De Marchi wrote:
> Just like the GT and engine workarounds, add debug message with the
> final value being written to the register for easy debugging.
> 
> Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>

Matches the existing output style of xe_reg_sr_apply_mmio /
apply_one_mmio.

Reviewed-by: Matt Roper <matthew.d.roper at intel.com>

> ---
>  drivers/gpu/drm/xe/xe_gt.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/gpu/drm/xe/xe_gt.c b/drivers/gpu/drm/xe/xe_gt.c
> index 3d6a7c11bac1..bd307770a620 100644
> --- a/drivers/gpu/drm/xe/xe_gt.c
> +++ b/drivers/gpu/drm/xe/xe_gt.c
> @@ -116,6 +116,7 @@ static int emit_nop_job(struct xe_gt *gt, struct xe_exec_queue *q)
>  
>  static int emit_wa_job(struct xe_gt *gt, struct xe_exec_queue *q)
>  {
> +	struct xe_device *xe = gt_to_xe(gt);
>  	struct xe_reg_sr *sr = &q->hwe->reg_lrc;
>  	struct xe_reg_sr_entry *entry;
>  	unsigned long reg;
> @@ -133,10 +134,14 @@ static int emit_wa_job(struct xe_gt *gt, struct xe_exec_queue *q)
>  		++count;
>  
>  	if (count) {
> +		drm_dbg(&xe->drm, "LRC WA %s save-restore MMIOs\n", sr->name);
> +
>  		bb->cs[bb->len++] = MI_LOAD_REGISTER_IMM(count);
>  		xa_for_each(&sr->xa, reg, entry) {
>  			bb->cs[bb->len++] = reg;
>  			bb->cs[bb->len++] = entry->set_bits;
> +			drm_dbg(&xe->drm, "REG[0x%lx] = 0x%08x", reg,
> +				entry->set_bits);
>  		}
>  	}
>  
> -- 
> 2.40.1
> 

-- 
Matt Roper
Graphics Software Engineer
Linux GPU Platform Enablement
Intel Corporation