On 4/23/2020 11:52 PM, Lad Prabhakar wrote:
> pci_epc_mem_init() internally used page size equal to *PAGE_SIZE* to
> manage the address space so instead just pass the page size as a
> argument to pci_epc_mem_init().
>
> Also make pci_epc_mem_init() as a C function instead of a macro function
> in preparation for adding support for pci-epc-mem core to handle multiple
> windows.
>
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
Acked-by: Kishon Vijay Abraham I <kishon@xxxxxx>
> ---
> drivers/pci/controller/cadence/pcie-cadence-ep.c | 2 +-
> drivers/pci/controller/pcie-rockchip-ep.c | 2 +-
> drivers/pci/endpoint/pci-epc-mem.c | 7 +++++++
> include/linux/pci-epc.h | 5 ++---
> 4 files changed, 11 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/pci/controller/cadence/pcie-cadence-ep.c b/drivers/pci/controller/cadence/pcie-cadence-ep.c
> index 1c173dad67d1..1c15c8352125 100644
> --- a/drivers/pci/controller/cadence/pcie-cadence-ep.c
> +++ b/drivers/pci/controller/cadence/pcie-cadence-ep.c
> @@ -450,7 +450,7 @@ int cdns_pcie_ep_setup(struct cdns_pcie_ep *ep)
> epc->max_functions = 1;
>
> ret = pci_epc_mem_init(epc, pcie->mem_res->start,
> - resource_size(pcie->mem_res));
> + resource_size(pcie->mem_res), PAGE_SIZE);
> if (ret < 0) {
> dev_err(dev, "failed to initialize the memory space\n");
> goto err_init;
> diff --git a/drivers/pci/controller/pcie-rockchip-ep.c b/drivers/pci/controller/pcie-rockchip-ep.c
> index d743b0a48988..5eaf36629a75 100644
> --- a/drivers/pci/controller/pcie-rockchip-ep.c
> +++ b/drivers/pci/controller/pcie-rockchip-ep.c
> @@ -615,7 +615,7 @@ static int rockchip_pcie_ep_probe(struct platform_device *pdev)
> rockchip_pcie_write(rockchip, BIT(0), PCIE_CORE_PHY_FUNC_CFG);
>
> err = pci_epc_mem_init(epc, rockchip->mem_res->start,
> - resource_size(rockchip->mem_res));
> + resource_size(rockchip->mem_res), PAGE_SIZE);
> if (err < 0) {
> dev_err(dev, "failed to initialize the memory space\n");
> goto err_uninit_port;
> diff --git a/drivers/pci/endpoint/pci-epc-mem.c b/drivers/pci/endpoint/pci-epc-mem.c
> index abfac1109a13..cdd1d3821249 100644
> --- a/drivers/pci/endpoint/pci-epc-mem.c
> +++ b/drivers/pci/endpoint/pci-epc-mem.c
> @@ -93,6 +93,13 @@ return ret;
> }
> EXPORT_SYMBOL_GPL(__pci_epc_mem_init);
>
> +int pci_epc_mem_init(struct pci_epc *epc, phys_addr_t base,
> + size_t size, size_t page_size)
> +{
> + return __pci_epc_mem_init(epc, base, size, page_size);
> +}
> +EXPORT_SYMBOL_GPL(pci_epc_mem_init);
> +
> /**
> * pci_epc_mem_exit() - cleanup the pci_epc_mem structure
> * @epc: the EPC device that invoked pci_epc_mem_exit
> diff --git a/include/linux/pci-epc.h b/include/linux/pci-epc.h
> index e0ed9d01f6e5..5bc1de65849e 100644
> --- a/include/linux/pci-epc.h
> +++ b/include/linux/pci-epc.h
> @@ -137,9 +137,6 @@ struct pci_epc_features {
> #define devm_pci_epc_create(dev, ops) \
> __devm_pci_epc_create((dev), (ops), THIS_MODULE)
>
> -#define pci_epc_mem_init(epc, phys_addr, size) \
> - __pci_epc_mem_init((epc), (phys_addr), (size), PAGE_SIZE)
> -
> static inline void epc_set_drvdata(struct pci_epc *epc, void *data)
> {
> dev_set_drvdata(&epc->dev, data);
> @@ -195,6 +192,8 @@ unsigned int pci_epc_get_first_free_bar(const struct pci_epc_features
> struct pci_epc *pci_epc_get(const char *epc_name);
> void pci_epc_put(struct pci_epc *epc);
>
> +int pci_epc_mem_init(struct pci_epc *epc, phys_addr_t base,
> + size_t size, size_t page_size);
> int __pci_epc_mem_init(struct pci_epc *epc, phys_addr_t phys_addr, size_t size,
> size_t page_size);
> void pci_epc_mem_exit(struct pci_epc *epc);
>
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