On Tue, Oct 15, 2024 at 06:07:12PM +0900, Damien Le Moal wrote:
> The PCI endpoint controller operation interface for the align_addr()
> operation uses the phys_addr_t type for the PCI address argument and
> return a value using this type. This is not ideal as PCI addresses are
> bus addresses, not regular memory physical addresses. Replace the use of
> phys_addr_t for this operation with the generic u64 type. To be
> consistent with this change the Designware driver implementation of this
> operation (function dw_pcie_ep_align_addr()) as well as the type of PCI
> address fields of struct pci_epc_map are also changed.
>
> Fixes: e98c99e2ccad ("PCI: endpoint: Introduce pci_epc_mem_map()/unmap()")
> Fixes: cb6b7158fdf5 ("PCI: dwc: endpoint: Implement the pci_epc_ops::align_addr() operation")
> Signed-off-by: Damien Le Moal <dlemoal@xxxxxxxxxx>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
- Mani
> ---
> Changes from v1:
> - Also updated the type of the pci_addr and map_pci_addr fields of
> struct pci_epc_map.
>
> drivers/pci/controller/dwc/pcie-designware-ep.c | 6 +++---
> include/linux/pci-epc.h | 8 ++++----
> 2 files changed, 7 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c
> index 0ada60487c25..df1460ed63d9 100644
> --- a/drivers/pci/controller/dwc/pcie-designware-ep.c
> +++ b/drivers/pci/controller/dwc/pcie-designware-ep.c
> @@ -268,12 +268,12 @@ static int dw_pcie_find_index(struct dw_pcie_ep *ep, phys_addr_t addr,
> return -EINVAL;
> }
>
> -static phys_addr_t dw_pcie_ep_align_addr(struct pci_epc *epc,
> - phys_addr_t pci_addr, size_t *pci_size, size_t *offset)
> +static u64 dw_pcie_ep_align_addr(struct pci_epc *epc, u64 pci_addr,
> + size_t *pci_size, size_t *offset)
> {
> struct dw_pcie_ep *ep = epc_get_drvdata(epc);
> struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
> - phys_addr_t mask = pci->region_align - 1;
> + u64 mask = pci->region_align - 1;
> size_t ofst = pci_addr & mask;
>
> *pci_size = ALIGN(ofst + *pci_size, ep->page_size);
> diff --git a/include/linux/pci-epc.h b/include/linux/pci-epc.h
> index f4b8dc37e447..de8cc3658220 100644
> --- a/include/linux/pci-epc.h
> +++ b/include/linux/pci-epc.h
> @@ -49,10 +49,10 @@ pci_epc_interface_string(enum pci_epc_interface_type type)
> * @virt_addr: virtual address at which @pci_addr is mapped
> */
> struct pci_epc_map {
> - phys_addr_t pci_addr;
> + u64 pci_addr;
> size_t pci_size;
>
> - phys_addr_t map_pci_addr;
> + u64 map_pci_addr;
> size_t map_size;
>
> phys_addr_t phys_base;
> @@ -93,8 +93,8 @@ struct pci_epc_ops {
> struct pci_epf_bar *epf_bar);
> void (*clear_bar)(struct pci_epc *epc, u8 func_no, u8 vfunc_no,
> struct pci_epf_bar *epf_bar);
> - phys_addr_t (*align_addr)(struct pci_epc *epc, phys_addr_t pci_addr,
> - size_t *size, size_t *offset);
> + u64 (*align_addr)(struct pci_epc *epc, u64 pci_addr, size_t *size,
> + size_t *offset);
> int (*map_addr)(struct pci_epc *epc, u8 func_no, u8 vfunc_no,
> phys_addr_t addr, u64 pci_addr, size_t size);
> void (*unmap_addr)(struct pci_epc *epc, u8 func_no, u8 vfunc_no,
> --
> 2.47.0
>
--
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