Re: [PATCH v18 04/20] PCI: dwc: Change arguments of dw_pcie_prog_outbound_atu()

[Manivannan Sadhasivam <mani@kernel.org>]

On Fri, Jul 21, 2023 at 04:44:36PM +0900, Yoshihiro Shimoda wrote:
> The __dw_pcie_prog_outbound_atu() currently has 6 arguments.
> To support INTx IRQs in the future, it requires an additional 2
> arguments. For improved code readability, introduce the struct
> dw_pcie_ob_atu_cfg and update the arguments of
> dw_pcie_prog_outbound_atu().
> 
> Consequently, remove __dw_pcie_prog_outbound_atu() and
> dw_pcie_prog_ep_outbound_atu() because there is no longer
> a need.
> 
> No behavior changes.
> 
> Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>

One nit below. With that,

Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>

> Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
> ---
>  .../pci/controller/dwc/pcie-designware-ep.c   | 21 +++++---
>  .../pci/controller/dwc/pcie-designware-host.c | 52 +++++++++++++------
>  drivers/pci/controller/dwc/pcie-designware.c  | 49 ++++++-----------
>  drivers/pci/controller/dwc/pcie-designware.h  | 15 ++++--
>  4 files changed, 77 insertions(+), 60 deletions(-)
> 

[...]

> diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h
> index 3c06e025c905..85de0d8346fa 100644
> --- a/drivers/pci/controller/dwc/pcie-designware.h
> +++ b/drivers/pci/controller/dwc/pcie-designware.h
> @@ -288,6 +288,15 @@ enum dw_pcie_core_rst {
>  	DW_PCIE_NUM_CORE_RSTS
>  };
>  
> +struct dw_pcie_ob_atu_cfg {
> +	int index;
> +	int type;
> +	u8 func_no;
> +	u64 cpu_addr;
> +	u64 pci_addr;
> +	u64 size;

Reorder the members in below order to avoid holes:

u64
int
u8

- Mani

> +};
> +
>  struct dw_pcie_host_ops {
>  	int (*host_init)(struct dw_pcie_rp *pp);
>  	void (*host_deinit)(struct dw_pcie_rp *pp);
> @@ -416,10 +425,8 @@ void dw_pcie_write_dbi2(struct dw_pcie *pci, u32 reg, size_t size, u32 val);
>  int dw_pcie_link_up(struct dw_pcie *pci);
>  void dw_pcie_upconfig_setup(struct dw_pcie *pci);
>  int dw_pcie_wait_for_link(struct dw_pcie *pci);
> -int dw_pcie_prog_outbound_atu(struct dw_pcie *pci, int index, int type,
> -			      u64 cpu_addr, u64 pci_addr, u64 size);
> -int dw_pcie_prog_ep_outbound_atu(struct dw_pcie *pci, u8 func_no, int index,
> -				 int type, u64 cpu_addr, u64 pci_addr, u64 size);
> +int dw_pcie_prog_outbound_atu(struct dw_pcie *pci,
> +			      const struct dw_pcie_ob_atu_cfg *atu);
>  int dw_pcie_prog_inbound_atu(struct dw_pcie *pci, int index, int type,
>  			     u64 cpu_addr, u64 pci_addr, u64 size);
>  int dw_pcie_prog_ep_inbound_atu(struct dw_pcie *pci, u8 func_no, int index,
> -- 
> 2.25.1
> 

-- 
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