On Wed, Jun 11, 2014 at 02:51:20AM +0800, Murali Karicheri wrote:
> v3.65 version of the designware h/w, requires application space
> registers to be configured to access the remote EP config space.
> To support this, add rd[wr]_other_conf API in the pcie_host_opts
>
> Signed-off-by: Murali Karicheri <m-karicheri2@xxxxxx>
>
> CC: Santosh Shilimkar <santosh.shilimkar@xxxxxx>
> CC: Russell King <linux@xxxxxxxxxxxxxxxx>
> CC: Grant Likely <grant.likely@xxxxxxxxxx>
> CC: Rob Herring <robh+dt@xxxxxxxxxx>
> CC: Mohit Kumar <mohit.kumar@xxxxxx>
> CC: Jingoo Han <jg1.han@xxxxxxxxxxx>
> CC: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
> CC: Pratyush Anand <pratyush.anand@xxxxxx>
> CC: Richard Zhu <r65037@xxxxxxxxxxxxx>
> CC: Kishon Vijay Abraham I <kishon@xxxxxx>
> CC: Marek Vasut <marex@xxxxxxx>
> CC: Arnd Bergmann <arnd@xxxxxxxx>
> CC: Pawel Moll <pawel.moll@xxxxxxx>
> CC: Mark Rutland <mark.rutland@xxxxxxx>
> CC: Ian Campbell <ijc+devicetree@xxxxxxxxxxxxxx>
> CC: Kumar Gala <galak@xxxxxxxxxxxxxx>
> CC: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
> CC: Grant Likely <grant.likely@xxxxxxxxxx>
>
> ---
> drivers/pci/host/pcie-designware.c | 12 ++++++++++--
> drivers/pci/host/pcie-designware.h | 4 ++++
> 2 files changed, 14 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/pci/host/pcie-designware.c b/drivers/pci/host/pcie-designware.c
> index c4e3732..e8f5d8d 100644
> --- a/drivers/pci/host/pcie-designware.c
> +++ b/drivers/pci/host/pcie-designware.c
> @@ -654,7 +654,11 @@ static int dw_pcie_rd_conf(struct pci_bus *bus, u32 devfn, int where,
>
> spin_lock_irqsave(&pp->conf_lock, flags);
> if (bus->number != pp->root_bus_nr)
> - ret = dw_pcie_rd_other_conf(pp, bus, devfn,
> + if (pp->ops->rd_other_conf)
> + ret = pp->ops->rd_other_conf(pp, bus, devfn,
> + where, size, val);
> + else
> + ret = dw_pcie_rd_other_conf(pp, bus, devfn,
> where, size, val);
> else
> ret = dw_pcie_rd_own_conf(pp, where, size, val);
> @@ -680,7 +684,11 @@ static int dw_pcie_wr_conf(struct pci_bus *bus, u32 devfn,
>
> spin_lock_irqsave(&pp->conf_lock, flags);
> if (bus->number != pp->root_bus_nr)
> - ret = dw_pcie_wr_other_conf(pp, bus, devfn,
> + if (pp->ops->wr_other_conf)
> + ret = pp->ops->wr_other_conf(pp, bus, devfn,
> + where, size, val);
> + else
> + ret = dw_pcie_wr_other_conf(pp, bus, devfn,
> where, size, val);
> else
> ret = dw_pcie_wr_own_conf(pp, where, size, val);
> diff --git a/drivers/pci/host/pcie-designware.h b/drivers/pci/host/pcie-designware.h
> index 3063b35..2d6dd66 100644
> --- a/drivers/pci/host/pcie-designware.h
> +++ b/drivers/pci/host/pcie-designware.h
> @@ -62,6 +62,10 @@ struct pcie_host_ops {
> u32 val, void __iomem *dbi_base);
> int (*rd_own_conf)(struct pcie_port *pp, int where, int size, u32 *val);
> int (*wr_own_conf)(struct pcie_port *pp, int where, int size, u32 val);
> + int (*rd_other_conf)(struct pcie_port *pp, struct pci_bus *bus,
> + unsigned int devfn, int where, int size, u32 *val);
> + int (*wr_other_conf)(struct pcie_port *pp, struct pci_bus *bus,
> + unsigned int devfn, int where, int size, u32 val);
> int (*link_up)(struct pcie_port *pp);
> void (*host_init)(struct pcie_port *pp);
> };
Reviewed-by: Pratyush Anand <pratyush.anand@xxxxxx>
> --
> 1.7.9.5
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