Hi Gustavo,
On Friday 29 December 2017 07:51 PM, Gustavo Pimentel wrote:
> Adds a IRQ chained API to pcie-designware, that aims to replace the current
> IRQ domain hierarchy API implemented.
>
> Although the IRQ domain hierarchy API is still available, pcie-designware
> will use now the IRQ chained API.
>
> Signed-off-by: Gustavo Pimentel <gustavo.pimentel@xxxxxxxxxxxx>
> ---
> Change v1->v2:
> - num_vectors is now not configurable by the Device Tree. Now it is 32 by
> default and can be overridden by any specific SoC driver.
> Change v2->v3:
> - Nothing changed, just to follow the patch set version.
> Change v3->v4:
> - Moved Kishon's fixes (PCI end point error and a dra7xx warning) from
> v3-0007 patch file to here.
> - Undo the change of the function signature to be more coherent with the
> host mode specific functions (Thanks Kishon).
> - Refactor the added functions in order to used host_data so that getting
> pp again back from pci could be avoided. (Thanks Kishon)
> - Changed summary line to match the drivers/PCI convention and changelog to
> maintain the consistency (thanks Bjorn).
>
> drivers/pci/dwc/pcie-designware-host.c | 291 +++++++++++++++++++++++++++++----
> drivers/pci/dwc/pcie-designware.h | 18 ++
> 2 files changed, 281 insertions(+), 28 deletions(-)
>
> diff --git a/drivers/pci/dwc/pcie-designware-host.c b/drivers/pci/dwc/pcie-designware-host.c
> index bf558df..631d665 100644
> --- a/drivers/pci/dwc/pcie-designware-host.c
> +++ b/drivers/pci/dwc/pcie-designware-host.c
> @@ -11,6 +11,7 @@
> * published by the Free Software Foundation.
> */
>
> +#include <linux/irqchip/chained_irq.h>
> #include <linux/irqdomain.h>
> #include <linux/of_address.h>
> #include <linux/of_pci.h>
> @@ -53,6 +54,42 @@ static struct irq_chip dw_msi_irq_chip = {
> .irq_unmask = pci_msi_unmask_irq,
> };
>
> +static void dw_pci_ack_irq(struct irq_data *d)
> +{
> + struct msi_desc *msi = irq_data_get_msi_desc(d);
> + struct pcie_port *pp;
> +
> + pp = (struct pcie_port *) msi_desc_to_pci_sysdata(msi);
> +
> + if (pp->ops->msi_irq_ack)
> + pp->ops->msi_irq_ack(d->irq, pp);
just like below pass hwirq here..
Thanks
Kishon
