linux-kernel - Re: [PATCH V12 01/12] PCI: Add #defines for some of PCIe spec r4.0 features

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Message-ID: <66d8af45-66f5-b597-0ea8-39e8662df5e6@nvidia.com>
Date:   Fri, 5 Jul 2019 19:16:22 +0530
From:   Vidya Sagar <vidyas@...dia.com>
To:     <bhelgaas@...gle.com>
CC:     <lorenzo.pieralisi@....com>, <robh+dt@...nel.org>,
        <mark.rutland@....com>, <thierry.reding@...il.com>,
        <jonathanh@...dia.com>, <kishon@...com>, <catalin.marinas@....com>,
        <will.deacon@....com>, <jingoohan1@...il.com>,
        <gustavo.pimentel@...opsys.com>, <digetx@...il.com>,
        <mperttunen@...dia.com>, <linux-pci@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-tegra@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <kthota@...dia.com>,
        <mmaddireddy@...dia.com>, <sagar.tv@...il.com>
Subject: Re: [PATCH V12 01/12] PCI: Add #defines for some of PCIe spec r4.0
 features

On 7/1/2019 6:09 PM, Vidya Sagar wrote:
Bjorn,
Can you please provide Ack for this patch?

Thanks,
Vidya Sagar

> Add #defines only for the Data Link Feature and Physical Layer 16.0 GT/s
> features.
> 
> Signed-off-by: Vidya Sagar <vidyas@...dia.com>
> Reviewed-by: Thierry Reding <treding@...dia.com>
> ---
> Changes since [v11]:
> * None
> 
> Changes since [v10]:
> * None
> 
> Changes since [v9]:
> * None
> 
> Changes since [v8]:
> * None
> 
> Changes since [v7]:
> * None
> 
> Changes since [v6]:
> * None
> 
> Changes since [v5]:
> * None
> 
> Changes since [v4]:
> * None
> 
> Changes since [v3]:
> * None
> 
> Changes since [v2]:
> * Updated commit message and description to explicitly mention that defines are
>    added only for some of the features and not all.
> 
> Changes since [v1]:
> * None
> 
>   include/uapi/linux/pci_regs.h | 22 +++++++++++++++++++++-
>   1 file changed, 21 insertions(+), 1 deletion(-)
> 
> diff --git a/include/uapi/linux/pci_regs.h b/include/uapi/linux/pci_regs.h
> index f28e562d7ca8..1c79f6a097d2 100644
> --- a/include/uapi/linux/pci_regs.h
> +++ b/include/uapi/linux/pci_regs.h
> @@ -713,7 +713,9 @@
>   #define PCI_EXT_CAP_ID_DPC	0x1D	/* Downstream Port Containment */
>   #define PCI_EXT_CAP_ID_L1SS	0x1E	/* L1 PM Substates */
>   #define PCI_EXT_CAP_ID_PTM	0x1F	/* Precision Time Measurement */
> -#define PCI_EXT_CAP_ID_MAX	PCI_EXT_CAP_ID_PTM
> +#define PCI_EXT_CAP_ID_DLF	0x25	/* Data Link Feature */
> +#define PCI_EXT_CAP_ID_PL	0x26	/* Physical Layer 16.0 GT/s */
> +#define PCI_EXT_CAP_ID_MAX	PCI_EXT_CAP_ID_PL
>   
>   #define PCI_EXT_CAP_DSN_SIZEOF	12
>   #define PCI_EXT_CAP_MCAST_ENDPOINT_SIZEOF 40
> @@ -1053,4 +1055,22 @@
>   #define  PCI_L1SS_CTL1_LTR_L12_TH_SCALE	0xe0000000  /* LTR_L1.2_THRESHOLD_Scale */
>   #define PCI_L1SS_CTL2		0x0c	/* Control 2 Register */
>   
> +/* Data Link Feature */
> +#define PCI_DLF_CAP		0x04	/* Capabilities Register */
> +#define  PCI_DLF_LOCAL_DLF_SUP_MASK	0x007fffff  /* Local Data Link Feature Supported */
> +#define  PCI_DLF_EXCHANGE_ENABLE	0x80000000  /* Data Link Feature Exchange Enable */
> +#define PCI_DLF_STS		0x08	/* Status Register */
> +#define  PCI_DLF_REMOTE_DLF_SUP_MASK	0x007fffff  /* Remote Data Link Feature Supported */
> +#define  PCI_DLF_REMOTE_DLF_SUP_VALID	0x80000000  /* Remote Data Link Feature Support Valid */
> +
> +/* Physical Layer 16.0 GT/s */
> +#define PCI_PL_16GT_CAP		0x04	/* Capabilities Register */
> +#define PCI_PL_16GT_CTRL	0x08	/* Control Register */
> +#define PCI_PL_16GT_STS		0x0c	/* Status Register */
> +#define PCI_PL_16GT_LDPM_STS	0x10	/* Local Data Parity Mismatch Status Register */
> +#define PCI_PL_16GT_FRDPM_STS	0x14	/* First Retimer Data Parity Mismatch Status Register */
> +#define PCI_PL_16GT_SRDPM_STS	0x18	/* Second Retimer Data Parity Mismatch Status Register */
> +#define PCI_PL_16GT_RSVD	0x1C	/* Reserved */
> +#define PCI_PL_16GT_LE_CTRL	0x20	/* Lane Equalization Control Register */
> +
>   #endif /* LINUX_PCI_REGS_H */
>