linux-kernel - Re: [PATCH v7 10/15] mei: mkhi: add memory ready command

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Message-ID: <bcdba86f-45ca-3e6f-e03c-5c991fd08235@intel.com>
Date:   Thu, 1 Sep 2022 13:56:10 -0700
From:   "Ceraolo Spurio, Daniele" <daniele.ceraolospurio@...el.com>
To:     Tomas Winkler <tomas.winkler@...el.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>
CC:     Jani Nikula <jani.nikula@...ux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>,
        <intel-gfx@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>,
        "Alexander Usyskin" <alexander.usyskin@...el.com>,
        Vitaly Lubart <vitaly.lubart@...el.com>
Subject: Re: [PATCH v7 10/15] mei: mkhi: add memory ready command



On 8/6/2022 5:26 AM, Tomas Winkler wrote:
> Add GSC memory ready command.
> The command indicates to the firmware that extend operation
> memory was setup and the firmware may enter PXP mode.
>
> CC: Daniele Ceraolo Spurio <daniele.ceraolospurio@...el.com>
> Signed-off-by: Tomas Winkler <tomas.winkler@...el.com>
> Signed-off-by: Alexander Usyskin <alexander.usyskin@...el.com>

Copyright date aside, this is:

Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@...el.com>

Daniele

> ---
>   drivers/misc/mei/mkhi.h | 14 +++++++++++++-
>   1 file changed, 13 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/misc/mei/mkhi.h b/drivers/misc/mei/mkhi.h
> index 27a9b476904e..056b76e73d40 100644
> --- a/drivers/misc/mei/mkhi.h
> +++ b/drivers/misc/mei/mkhi.h
> @@ -1,6 +1,6 @@
>   /* SPDX-License-Identifier: GPL-2.0 */
>   /*
> - * Copyright (c) 2003-2020, Intel Corporation. All rights reserved.
> + * Copyright (c) 2003-2021, Intel Corporation. All rights reserved.
>    * Intel Management Engine Interface (Intel MEI) Linux driver
>    */
>   
> @@ -18,6 +18,13 @@
>   
>   #define MCHI_GROUP_ID  0xA
>   
> +#define MKHI_GROUP_ID_GFX              0x30
> +#define MKHI_GFX_RESET_WARN_CMD_REQ    0x0
> +#define MKHI_GFX_MEMORY_READY_CMD_REQ  0x1
> +
> +/* Allow transition to PXP mode without approval */
> +#define MKHI_GFX_MEM_READY_PXP_ALLOWED  0x1
> +
>   struct mkhi_rule_id {
>   	__le16 rule_type;
>   	u8 feature_id;
> @@ -42,4 +49,9 @@ struct mkhi_msg {
>   	u8 data[];
>   } __packed;
>   
> +struct mkhi_gfx_mem_ready {
> +	struct mkhi_msg_hdr hdr;
> +	u32    flags;
> +} __packed;
> +
>   #endif /* _MEI_MKHI_H_ */