From: "Gupta, Nipun" <nipun.gupta@amd.com>
To: gregkh@linuxfoundation.org, maz@kernel.org, tglx@linutronix.de,
jgg@ziepe.ca, linux-kernel@vger.kernel.org
Cc: git@amd.com, harpreet.anand@amd.com,
pieter.jansen-van-vuuren@amd.com, nikhil.agarwal@amd.com,
michal.simek@amd.com, abhijit.gangurde@amd.com,
srivatsa@csail.mit.edu
Subject: Re: [PATCH v4] cdx: add MSI support for CDX bus
Date: Tue, 26 Sep 2023 15:18:58 +0530 [thread overview]
Message-ID: <6127727d-cb4e-7729-5216-83c93fbb22ee@amd.com> (raw)
In-Reply-To: <20230911135259.14046-1-nipun.gupta@amd.com>
Hi Greg,
On 9/11/2023 7:22 PM, Nipun Gupta wrote:
> Add CDX-MSI domain per CDX controller with gic-its domain as
> a parent, to support MSI for CDX devices. CDX devices allocate
> MSIs from the CDX domain. Also, introduce APIs to alloc and free
> IRQs for CDX domain.
>
> In CDX subsystem firmware is a controller for all devices and
> their configuration. CDX bus controller sends all the write_msi_msg
> commands to firmware running on RPU and the firmware interfaces with
> actual devices to pass this information to devices
>
> Since, CDX controller is the only way to communicate with the Firmware
> for MSI write info, CDX domain per controller required in contrast to
> having a CDX domain per device.
>
> Co-developed-by: Nikhil Agarwal <nikhil.agarwal@amd.com>
> Signed-off-by: Nikhil Agarwal <nikhil.agarwal@amd.com>
> Co-developed-by: Abhijit Gangurde <abhijit.gangurde@amd.com>
> Signed-off-by: Abhijit Gangurde <abhijit.gangurde@amd.com>
> Signed-off-by: Nipun Gupta <nipun.gupta@amd.com>
> Reviewed-by: Pieter Jansen van Vuuren <pieter.jansen-van-vuuren@amd.com>
> Tested-by: Nikhil Agarwal <nikhil.agarwal@amd.com>
Please help in making progress on this patch. Is there anything that
needs to be updated in this patch for CDX bus?
Thanks,
Nipun
next prev parent reply other threads:[~2023-09-26 9:49 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-11 13:52 [PATCH v4] cdx: add MSI support for CDX bus Nipun Gupta
2023-09-26 9:48 ` Gupta, Nipun [this message]
2023-09-26 9:55 ` Greg KH
2023-09-26 13:06 ` Gupta, Nipun
2023-09-26 13:10 ` Gupta, Nipun
2023-10-05 10:24 ` Greg KH
2023-10-05 13:46 ` Thomas Gleixner
2023-10-05 14:00 ` Greg KH
2023-10-05 14:37 ` Gupta, Nipun
2023-10-05 14:54 ` Greg KH
2023-10-05 15:05 ` Gupta, Nipun
2023-10-07 8:43 ` Gupta, Nipun
2023-10-07 8:51 ` Greg KH
2023-10-09 4:53 ` Gupta, Nipun
2023-10-17 11:24 ` Gangurde, Abhijit
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