linux-kernel - Re: [PATCH 20/33] iris: vidc: hfi: add helpers for handling shared queues

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Date:   Fri, 28 Jul 2023 19:58:50 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Vikash Garodia <quic_vgarodia@...cinc.com>,
        stanimir.k.varbanov@...il.com, agross@...nel.org,
        andersson@...nel.org, mchehab@...nel.org, hans.verkuil@...co.com,
        linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
        linux-arm-msm@...r.kernel.org
Cc:     quic_dikshita@...cinc.com
Subject: Re: [PATCH 20/33] iris: vidc: hfi: add helpers for handling shared
 queues

On 28.07.2023 15:23, Vikash Garodia wrote:
> This implements functions to allocate and update the shared memory
> used for sending commands to firmware and receiving messages from
> firmware.
> 
> Signed-off-by: Dikshita Agarwal <quic_dikshita@...cinc.com>
> Signed-off-by: Vikash Garodia <quic_vgarodia@...cinc.com>
> ---
>  .../platform/qcom/iris/vidc/inc/venus_hfi_queue.h  |  89 ++++
>  .../platform/qcom/iris/vidc/src/venus_hfi_queue.c  | 537 +++++++++++++++++++++
>  2 files changed, 626 insertions(+)
>  create mode 100644 drivers/media/platform/qcom/iris/vidc/inc/venus_hfi_queue.h
>  create mode 100644 drivers/media/platform/qcom/iris/vidc/src/venus_hfi_queue.c
> 
> diff --git a/drivers/media/platform/qcom/iris/vidc/inc/venus_hfi_queue.h b/drivers/media/platform/qcom/iris/vidc/inc/venus_hfi_queue.h
> new file mode 100644
> index 0000000..f533811
> --- /dev/null
> +++ b/drivers/media/platform/qcom/iris/vidc/inc/venus_hfi_queue.h
> @@ -0,0 +1,89 @@
> +/* SPDX-License-Identifier: GPL-2.0-only */
> +/*
> + * Copyright (c) 2020-2022, The Linux Foundation. All rights reserved.
> + * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
> + */
> +
> +#ifndef _VENUS_HFI_QUEUE_H_
> +#define _VENUS_HFI_QUEUE_H_
> +
> +#include <linux/types.h>
> +
> +#include "msm_vidc_internal.h"
> +
> +#define HFI_MASK_QHDR_TX_TYPE			0xff000000
> +#define HFI_MASK_QHDR_RX_TYPE			0x00ff0000
> +#define HFI_MASK_QHDR_PRI_TYPE			0x0000ff00
> +#define HFI_MASK_QHDR_Q_ID_TYPE			0x000000ff
> +#define HFI_Q_ID_HOST_TO_CTRL_CMD_Q		0
> +#define HFI_Q_ID_CTRL_TO_HOST_MSG_Q		1
> +#define HFI_Q_ID_CTRL_TO_HOST_DEBUG_Q		2
> +#define HFI_MASK_QHDR_STATUS			0x000000ff
GENMASK, BIT()..

Konrad