Maybe:
PCI: rcar: Add endpoint mode support
so the important "endpoint mode" part is early and doesn't get chopped
off or wrapped. We already know it's PCIe and rcar-related.
On Wed, Apr 08, 2020 at 04:37:58PM +0100, Lad Prabhakar wrote:
> This patch adds support for R-Car PCIe controller to work in endpoint mode.
s/This patch adds/Add/
> +static int rcar_pcie_ep_set_bar(struct pci_epc *epc, u8 func_no,
> + struct pci_epf_bar *epf_bar)
> +{
> + int flags = epf_bar->flags | LAR_ENABLE | LAM_64BIT;
> + struct rcar_pcie_endpoint *ep = epc_get_drvdata(epc);
> + u64 size = 1ULL << fls64(epf_bar->size - 1);
> + dma_addr_t cpu_addr = epf_bar->phys_addr;
> + enum pci_barno bar = epf_bar->barno;
> + struct rcar_pcie *pcie = &ep->pcie;
> + u32 mask;
> + int idx;
> + int err;
> +
> + idx = find_first_zero_bit(ep->ib_window_map, ep->num_ib_windows);
> + if (idx >= ep->num_ib_windows) {
> + dev_err(pcie->dev, "no free inbound window\n");
> + return -EINVAL;
> + }
> +
> + if ((flags & PCI_BASE_ADDRESS_SPACE) == PCI_BASE_ADDRESS_SPACE_IO)
> + flags |= IO_SPACE;
> +
> + ep->bar_to_atu[bar] = idx;
> + /* use 64 bit bars */
s/64 bit bars/64-bit BARs/
> +static const struct pci_epc_features rcar_pcie_epc_features = {
> + .linkup_notifier = false,
> + .msi_capable = true,
> + .msix_capable = false,
> + /* use 64-bit bars so mark bar1/3/5 as reserved */
s/bar/BAR/g
