On 10/27/20, 4:03 AM, Vidya Sagar wrote:
>
> Adds pcie_is_ecrc_enabled() API to let other sub-systems (like DesignWare)
> to query if ECRC policy is enabled and perform any configuration
> required in those respective sub-systems.
>
> Signed-off-by: Vidya Sagar <vid...@nvidia.com>
Reviewed-by: Jingoo Han <jingooh...@gmail.com>
Best regards,
Jingoo Han
> ---
> V2:
> * None from V1
>
> drivers/pci/pci.h | 2 ++
> drivers/pci/pcie/aer.c | 11 +++++++++++
> 2 files changed, 13 insertions(+)
>
> diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
> index fa12f7cbc1a0..325fdbf91dde 100644
> --- a/drivers/pci/pci.h
> +++ b/drivers/pci/pci.h
> @@ -575,9 +575,11 @@ static inline void
> pcie_aspm_powersave_config_link(struct pci_dev *pdev) { }
> #ifdef CONFIG_PCIE_ECRC
> void pcie_set_ecrc_checking(struct pci_dev *dev);
> void pcie_ecrc_get_policy(char *str);
> +bool pcie_is_ecrc_enabled(void);
> #else
> static inline void pcie_set_ecrc_checking(struct pci_dev *dev) { }
> static inline void pcie_ecrc_get_policy(char *str) { }
> +static inline bool pcie_is_ecrc_enabled(void) { return false; }
> #endif
>
> #ifdef CONFIG_PCIE_PTM
> diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c
> index 65dff5f3457a..24363c895aba 100644
> --- a/drivers/pci/pcie/aer.c
> +++ b/drivers/pci/pcie/aer.c
> @@ -207,6 +207,17 @@ void pcie_ecrc_get_policy(char *str)
>
> ecrc_policy = i;
> }
> +
> +/**
> + * pcie_is_ecrc_enabled - returns if ECRC is enabled in the system or not
> + *
> + * Returns 1 if ECRC policy is enabled and 0 otherwise
> + */
> +bool pcie_is_ecrc_enabled(void)
> +{
> + return ecrc_policy == ECRC_POLICY_ON;
> +}
> +EXPORT_SYMBOL(pcie_is_ecrc_enabled);
> #endif /* CONFIG_PCIE_ECRC */
>
> #define PCI_EXP_AER_FLAGS (PCI_EXP_DEVCTL_CERE |
> PCI_EXP_DEVCTL_NFERE | \
> --
> 2.17.1
