linux-kernel - Re: [PATCH net-next v4] net/nfc/nci: Support NCI 2.x initial sequence

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Message-ID: <20201204174828.7f2fec74@kicinski-fedora-pc1c0hjn.DHCP.thefacebook.com>
Date:   Fri, 4 Dec 2020 17:48:28 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Bongsu Jeon <bongsu.jeon2@...il.com>
Cc:     linux-nfc@...ts.01.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, Bongsu Jeon <bongsu.jeon@...sung.com>
Subject: Re: [PATCH net-next v4] net/nfc/nci: Support NCI 2.x initial
 sequence

On Thu,  3 Dec 2020 07:31:47 +0900 Bongsu Jeon wrote:
> From: Bongsu Jeon <bongsu.jeon@...sung.com>
> 
> implement the NCI 2.x initial sequence to support NCI 2.x NFCC.
> Since NCI 2.0, CORE_RESET and CORE_INIT sequence have been changed.
> If NFCEE supports NCI 2.x, then NCI 2.x initial sequence will work.
> 
> In NCI 1.0, Initial sequence and payloads are as below:
> (DH)                     (NFCC)
>  |  -- CORE_RESET_CMD --> |
>  |  <-- CORE_RESET_RSP -- |
>  |  -- CORE_INIT_CMD -->  |
>  |  <-- CORE_INIT_RSP --  |
>  CORE_RESET_RSP payloads are Status, NCI version, Configuration Status.
>  CORE_INIT_CMD payloads are empty.
>  CORE_INIT_RSP payloads are Status, NFCC Features,
>     Number of Supported RF Interfaces, Supported RF Interface,
>     Max Logical Connections, Max Routing table Size,
>     Max Control Packet Payload Size, Max Size for Large Parameters,
>     Manufacturer ID, Manufacturer Specific Information.
> 
> In NCI 2.0, Initial Sequence and Parameters are as below:
> (DH)                     (NFCC)
>  |  -- CORE_RESET_CMD --> |
>  |  <-- CORE_RESET_RSP -- |
>  |  <-- CORE_RESET_NTF -- |
>  |  -- CORE_INIT_CMD -->  |
>  |  <-- CORE_INIT_RSP --  |
>  CORE_RESET_RSP payloads are Status.
>  CORE_RESET_NTF payloads are Reset Trigger,
>     Configuration Status, NCI Version, Manufacturer ID,
>     Manufacturer Specific Information Length,
>     Manufacturer Specific Information.
>  CORE_INIT_CMD payloads are Feature1, Feature2.
>  CORE_INIT_RSP payloads are Status, NFCC Features,
>     Max Logical Connections, Max Routing Table Size,
>     Max Control Packet Payload Size,
>     Max Data Packet Payload Size of the Static HCI Connection,
>     Number of Credits of the Static HCI Connection,
>     Max NFC-V RF Frame Size, Number of Supported RF Interfaces,
>     Supported RF Interfaces.
> 
> Signed-off-by: Bongsu Jeon <bongsu.jeon@...sung.com>

Applied, thanks!