linux-kernel - Re: [PATCH v3 0/7] Add Aspeed SSIF BMC driver

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Date:   Thu, 20 May 2021 21:23:04 +0700
From:   Quan Nguyen <quan@...amperecomputing.com>
To:     minyard@....org
Cc:     Rob Herring <robh+dt@...nel.org>, Joel Stanley <joel@....id.au>,
        Andrew Jeffery <andrew@...id.au>,
        Brendan Higgins <brendanhiggins@...gle.com>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Wolfram Sang <wsa@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        openipmi-developer@...ts.sourceforge.net,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-aspeed@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        linux-i2c@...r.kernel.org,
        Open Source Submission <patches@...erecomputing.com>,
        Phong Vo <phong@...amperecomputing.com>,
        "Thang Q . Nguyen" <thang@...amperecomputing.com>,
        openbmc@...ts.ozlabs.org
Subject: Re: [PATCH v3 0/7] Add Aspeed SSIF BMC driver

On 19/05/2021 19:34, Corey Minyard wrote:
> On Wed, May 19, 2021 at 02:49:27PM +0700, Quan Nguyen wrote:
>> This series add support for the Aspeed specific SSIF BMC driver which
>> is to perform in-band IPMI communication with the host in management
>> (BMC) side.
>>
>> v3:
>>    + Switched binding doc to use DT schema format [Rob]
>>    + Splited into generic ssif_bmc and aspeed-specific [Corey, Joel]
>>    + Removed redundant license info [Joel]
>>    + Switched to use traditional if-else [Joel]
>>    + Removed unused ssif_bmc_ioctl() [Joel]
>>    + Made handle_request()/complete_response() to return void [Joel]
>>    + Refactored send_ssif_bmc_response()/receive_ssif_bmc_request() [Corey]
>>    + Remove mutex [Corey]
>>    + Use spin_lock/unlock_irqsave/restore in callback [Corey]
>>    + Removed the unnecessary memset [Corey]
>>    + Switch to use dev_err() [Corey]
>>    + Combine mask/unmask two interrupts together [Corey]
>>    + Fixed unhandled Tx done with NAK [Quan]
>>    + Late ack'ed Tx done w/wo Ack irq [Quan]
>>    + Use aspeed-specific exported aspeed_set_slave_busy() when slave busy
>> to fix the deadlock [Graeme, Philipp, Quan]
>>    + Clean buffer for last multipart read [Quan]
>>    + Handle unknown incoming command [Quan]
>>
>> v2:
>>    + Fixed compiling error with COMPILE_TEST for arc
>>
>> Quan Nguyen (7):
>>    i2c: i2c-core-smbus: Expose PEC calculate function for generic use
> 
> Note that for this I2C-specific change, I will need acks from the I2C
> maintainers to be able to include this in my tree.
>  >>    ipmi: ssif_bmc: Add SSIF BMC driver
>>    i2c: aspeed: Fix unhandled Tx done with NAK
> 
> For the aspeed changes, they don't really belong here, they belong in
> the aspeed tree.  I see that you need them for the device to work
> correctly, though.  I'll need acks from maintainers to include them.
> 
Thanks for you information.
Will separate these i2c-aspeed's patches into other independent series 
in next version.

>>    i2c: aspeed: Acknowledge Tx done w/wo ACK irq late
>>    i2c: aspeed: Add aspeed_set_slave_busy()
>>    ipmi: ssif_bmc: Add Aspeed SSIF BMC driver
>>    bindings: ipmi: Add binding for Aspeed SSIF BMC driver
>>
>>   .../bindings/ipmi/aspeed-ssif-bmc.yaml        |  33 +
>>   drivers/char/ipmi/Kconfig                     |  22 +
>>   drivers/char/ipmi/Makefile                    |   2 +
>>   drivers/char/ipmi/ssif_bmc.c                  | 605 ++++++++++++++++++
>>   drivers/char/ipmi/ssif_bmc.h                  |  93 +++
>>   drivers/char/ipmi/ssif_bmc_aspeed.c           |  75 +++
>>   drivers/i2c/busses/i2c-aspeed.c               |  51 +-
>>   drivers/i2c/i2c-core-smbus.c                  |  12 +-
>>   include/linux/i2c.h                           |   1 +
>>   9 files changed, 884 insertions(+), 10 deletions(-)
>>   create mode 100644 Documentation/devicetree/bindings/ipmi/aspeed-ssif-bmc.yaml
>>   create mode 100644 drivers/char/ipmi/ssif_bmc.c
>>   create mode 100644 drivers/char/ipmi/ssif_bmc.h
>>   create mode 100644 drivers/char/ipmi/ssif_bmc_aspeed.c
>>
>> -- 
>> 2.28.0
>>