[PATCH v4 1/2] xe/oa: Fix query mode of operation for OAR/OAC

Dixit, Ashutosh ashutosh.dixit at intel.com
Fri Dec 20 03:47:44 UTC 2024 

On Thu, 19 Dec 2024 16:22:33 -0800, Umesh Nerlige Ramappa wrote:
>

Hi Umesh,

> +static int xe_oa_load_with_lri(struct xe_oa_stream *stream, struct xe_oa_reg *reg_lri, u32 count)
>  {
>	struct dma_fence *fence;
>	struct xe_bb *bb;
>	int err;
>
> -	bb = xe_bb_new(stream->gt, 4 * count, false);
> +	bb = xe_bb_new(stream->gt, 2 * count + 1, false);
>	if (IS_ERR(bb)) {
>		err = PTR_ERR(bb);
>		goto exit;
>	}
>
> -	xe_oa_store_flex(stream, lrc, bb, flex, count);
> +	write_cs_mi_lri(bb, reg_lri, count);
>
> -	fence = xe_oa_submit_bb(stream, XE_OA_SUBMIT_NO_DEPS, bb);
> -	if (IS_ERR(fence)) {
> -		err = PTR_ERR(fence);
> -		goto free_bb;
> -	}
> -	xe_bb_free(bb, fence);
> -	dma_fence_put(fence);
> -
> -	return 0;
> -free_bb:
> -	xe_bb_free(bb, NULL);
> -exit:
> -	return err;
> -}
> -
> -static int xe_oa_load_with_lri(struct xe_oa_stream *stream, struct xe_oa_reg *reg_lri)
> -{
> -	struct dma_fence *fence;
> -	struct xe_bb *bb;
> -	int err;
> -
> -	bb = xe_bb_new(stream->gt, 3, false);
> -	if (IS_ERR(bb)) {
> -		err = PTR_ERR(bb);
> -		goto exit;
> -	}
> -
> -	write_cs_mi_lri(bb, reg_lri, 1);
> -
> -	fence = xe_oa_submit_bb(stream, XE_OA_SUBMIT_NO_DEPS, bb);
> +	fence = xe_oa_submit_bb(stream, XE_OA_SUBMIT_ADD_DEPS, bb);

This looks like a copy-paste error, could you please change this back to
XE_OA_SUBMIT_NO_DEPS as it used to be.


>	if (IS_ERR(fence)) {
>		err = PTR_ERR(fence);
>		goto free_bb;
> @@ -762,71 +732,57 @@ static int xe_oa_load_with_lri(struct xe_oa_stream *stream, struct xe_oa_reg *re
>  static int xe_oa_configure_oar_context(struct xe_oa_stream *stream, bool enable)
>  {
>	const struct xe_oa_format *format = stream->oa_buffer.format;
> -	struct xe_lrc *lrc = stream->exec_q->lrc[0];
> -	u32 regs_offset = xe_lrc_regs_offset(lrc) / sizeof(u32);
>	u32 oacontrol = __format_to_oactrl(format, OAR_OACONTROL_COUNTER_SEL_MASK) |
>		(enable ? OAR_OACONTROL_COUNTER_ENABLE : 0);
>
> -	struct flex regs_context[] = {
> +	struct xe_oa_reg reg_lri[] = {
>		{
>			OACTXCONTROL(stream->hwe->mmio_base),
> -			stream->oa->ctx_oactxctrl_offset[stream->hwe->class] + 1,
>			enable ? OA_COUNTER_RESUME : 0,
>		},
> +		{
> +			OAR_OACONTROL,
> +			oacontrol,
> +		},
>		{
>			RING_CONTEXT_CONTROL(stream->hwe->mmio_base),
> -			regs_offset + CTX_CONTEXT_CONTROL,
> -			_MASKED_BIT_ENABLE(CTX_CTRL_OAC_CONTEXT_ENABLE),
> +			_MASKED_FIELD(CTX_CTRL_OAC_CONTEXT_ENABLE,
> +				      enable ? CTX_CTRL_OAC_CONTEXT_ENABLE : 0)
>		},
>	};
> -	struct xe_oa_reg reg_lri = { OAR_OACONTROL, oacontrol };
> -	int err;
> -
> -	/* Modify stream hwe context image with regs_context */
> -	err = xe_oa_modify_ctx_image(stream, stream->exec_q->lrc[0],
> -				     regs_context, ARRAY_SIZE(regs_context));
> -	if (err)
> -		return err;
>
>	/* Apply reg_lri using LRI */

This comment only made sense when we had xe_oa_modify_ctx_image, maybe
delete it now.

> -	return xe_oa_load_with_lri(stream, &reg_lri);
> +	return xe_oa_load_with_lri(stream, reg_lri, ARRAY_SIZE(reg_lri));
>  }
>
>  static int xe_oa_configure_oac_context(struct xe_oa_stream *stream, bool enable)
>  {
>	const struct xe_oa_format *format = stream->oa_buffer.format;
> -	struct xe_lrc *lrc = stream->exec_q->lrc[0];
> -	u32 regs_offset = xe_lrc_regs_offset(lrc) / sizeof(u32);
>	u32 oacontrol = __format_to_oactrl(format, OAR_OACONTROL_COUNTER_SEL_MASK) |
>		(enable ? OAR_OACONTROL_COUNTER_ENABLE : 0);
> -	struct flex regs_context[] = {
> +	struct xe_oa_reg reg_lri[] = {
>		{
>			OACTXCONTROL(stream->hwe->mmio_base),
> -			stream->oa->ctx_oactxctrl_offset[stream->hwe->class] + 1,
>			enable ? OA_COUNTER_RESUME : 0,
>		},
> +		{
> +			OAC_OACONTROL,
> +			oacontrol
> +		},
>		{
>			RING_CONTEXT_CONTROL(stream->hwe->mmio_base),
> -			regs_offset + CTX_CONTEXT_CONTROL,
> -			_MASKED_BIT_ENABLE(CTX_CTRL_OAC_CONTEXT_ENABLE) |
> +			_MASKED_FIELD(CTX_CTRL_OAC_CONTEXT_ENABLE,
> +				      enable ? CTX_CTRL_OAC_CONTEXT_ENABLE : 0) |
>			_MASKED_FIELD(CTX_CTRL_RUN_ALONE, enable ? CTX_CTRL_RUN_ALONE : 0),
>		},
>	};
> -	struct xe_oa_reg reg_lri = { OAC_OACONTROL, oacontrol };
> -	int err;
>
>	/* Set ccs select to enable programming of OAC_OACONTROL */
>	xe_mmio_write32(&stream->gt->mmio, __oa_regs(stream)->oa_ctrl,
>			__oa_ccs_select(stream));
>
> -	/* Modify stream hwe context image with regs_context */
> -	err = xe_oa_modify_ctx_image(stream, stream->exec_q->lrc[0],
> -				     regs_context, ARRAY_SIZE(regs_context));
> -	if (err)
> -		return err;
> -
>	/* Apply reg_lri using LRI */

Same for this comment.

> -	return xe_oa_load_with_lri(stream, &reg_lri);
> +	return xe_oa_load_with_lri(stream, reg_lri, ARRAY_SIZE(reg_lri));
>  }
>
>  static int xe_oa_configure_oa_context(struct xe_oa_stream *stream, bool enable)
> @@ -2110,8 +2066,8 @@ int xe_oa_stream_open_ioctl(struct drm_device *dev, u64 data, struct drm_file *f
>		if (XE_IOCTL_DBG(oa->xe, !param.exec_q))
>			return -ENOENT;
>
> -		if (param.exec_q->width > 1)
> -			drm_dbg(&oa->xe->drm, "exec_q->width > 1, programming only exec_q->lrc[0]\n");
> +		if (XE_IOCTL_DBG(oa->xe, param.exec_q->width > 1))
> +			return -EOPNOTSUPP;
>	}
>
>	/*
> diff --git a/drivers/gpu/drm/xe/xe_ring_ops.c b/drivers/gpu/drm/xe/xe_ring_ops.c
> index 3a75a08b6be9..c8ab37fa0d19 100644
> --- a/drivers/gpu/drm/xe/xe_ring_ops.c
> +++ b/drivers/gpu/drm/xe/xe_ring_ops.c
> @@ -223,7 +223,10 @@ static int emit_pipe_imm_ggtt(u32 addr, u32 value, bool stall_only, u32 *dw,
>
>  static u32 get_ppgtt_flag(struct xe_sched_job *job)
>  {
> -	return job->q->vm ? BIT(8) : 0;
> +	if (job->q->vm && !job->ggtt)
> +		return BIT(8);
> +
> +	return 0;
>  }
>
>  static int emit_copy_timestamp(struct xe_lrc *lrc, u32 *dw, int i)
> diff --git a/drivers/gpu/drm/xe/xe_sched_job_types.h b/drivers/gpu/drm/xe/xe_sched_job_types.h
> index f13f333f00be..d942b20a9f29 100644
> --- a/drivers/gpu/drm/xe/xe_sched_job_types.h
> +++ b/drivers/gpu/drm/xe/xe_sched_job_types.h
> @@ -56,6 +56,8 @@ struct xe_sched_job {
>	u32 migrate_flush_flags;
>	/** @ring_ops_flush_tlb: The ring ops need to flush TLB before payload. */
>	bool ring_ops_flush_tlb;
> +	/** @ggtt: mapped in ggtt. */
> +	bool ggtt;
>	/** @ptrs: per instance pointers. */
>	struct xe_job_ptrs ptrs[];
>  };
> --
> 2.34.1
>

After making the above changes, this is now:

Reviewed-by: Ashutosh Dixit <ashutosh.dixit at intel.com>

If you don't want to send a new version, I think these changes can just be
made while merging.

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