linux-kernel - Re: [PATCH kernel 4/4] pci: Define Integrity and Data Encryption (IDE) extended capability

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Message-ID: <20240208220201.GA975089@bhelgaas>
Date: Thu, 8 Feb 2024 16:02:01 -0600
From: Bjorn Helgaas <helgaas@...nel.org>
To: Alexey Kardashevskiy <aik@....com>
Cc: linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Jonathan Cameron <jonathan.cameron@...wei.com>,
	Lukas Wunner <lukas@...ner.de>
Subject: Re: [PATCH kernel 4/4] pci: Define Integrity and Data Encryption
 (IDE) extended capability

On Thu, Feb 01, 2024 at 05:02:28PM +1100, Alexey Kardashevskiy wrote:
> PCIe 6.0 introduces the "Integrity & Data Encryption (IDE)" feature which
> adds a new capability with id=0x30.
> 
> Add the new id to the list of capabilities.
> 
> Signed-off-by: Alexey Kardashevskiy <aik@....com>
> ---
> 
> This only adds an id. The rest is here:
> https://github.com/aik/pciutils/commit/ide

We can add this #define when we have need for it in Linux, so let's
hold it until that need appears.

> Not sure how much of that we want in the Linux.
> ---
>  include/uapi/linux/pci_regs.h | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/include/uapi/linux/pci_regs.h b/include/uapi/linux/pci_regs.h
> index e60b4df1f7d9..b8d447b2c793 100644
> --- a/include/uapi/linux/pci_regs.h
> +++ b/include/uapi/linux/pci_regs.h
> @@ -743,7 +743,8 @@
>  #define PCI_EXT_CAP_ID_PL_16GT	0x26	/* Physical Layer 16.0 GT/s */
>  #define PCI_EXT_CAP_ID_PL_32GT  0x2A    /* Physical Layer 32.0 GT/s */
>  #define PCI_EXT_CAP_ID_DOE	0x2E	/* Data Object Exchange */
> -#define PCI_EXT_CAP_ID_MAX	PCI_EXT_CAP_ID_DOE
> +#define PCI_EXT_CAP_ID_IDE	0x30	/* Integrity and Data Encryption (IDE) */
> +#define PCI_EXT_CAP_ID_MAX	PCI_EXT_CAP_ID_IDE
>  
>  #define PCI_EXT_CAP_DSN_SIZEOF	12
>  #define PCI_EXT_CAP_MCAST_ENDPOINT_SIZEOF 40
> -- 
> 2.41.0
>