On Tue, Feb 9, 2016 at 5:56 PM, Duc Dang <dhdang@xxxxxxx> wrote:
> This patch makes pci-xgene-msi driver ACPI-aware and provides
> MSI capability for X-Gene v1 PCIe controllers in ACPI boot mode.
Hi Bjorn,
Are you planning to take this patch into your tree?
Regards,
Duc Dang.
>
> Signed-off-by: Duc Dang <dhdang@xxxxxxx>
> ---
> drivers/pci/host/pci-xgene-msi.c | 35 ++++++++++++++++++++++++++++++++---
> 1 file changed, 32 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/pci/host/pci-xgene-msi.c b/drivers/pci/host/pci-xgene-msi.c
> index a6456b5..466aa93 100644
> --- a/drivers/pci/host/pci-xgene-msi.c
> +++ b/drivers/pci/host/pci-xgene-msi.c
> @@ -24,6 +24,7 @@
> #include <linux/pci.h>
> #include <linux/platform_device.h>
> #include <linux/of_pci.h>
> +#include <linux/acpi.h>
>
> #define MSI_IR0 0x000000
> #define MSI_INT0 0x800000
> @@ -39,7 +40,7 @@ struct xgene_msi_group {
> };
>
> struct xgene_msi {
> - struct device_node *node;
> + struct fwnode_handle *fwnode;
> struct irq_domain *inner_domain;
> struct irq_domain *msi_domain;
> u64 msi_addr;
> @@ -249,6 +250,13 @@ static const struct irq_domain_ops msi_domain_ops = {
> .free = xgene_irq_domain_free,
> };
>
> +#ifdef CONFIG_ACPI
> +static struct fwnode_handle *xgene_msi_get_fwnode(struct device *dev)
> +{
> + return xgene_msi_ctrl.fwnode;
> +}
> +#endif
> +
> static int xgene_allocate_domains(struct xgene_msi *msi)
> {
> msi->inner_domain = irq_domain_add_linear(NULL, NR_MSI_VEC,
> @@ -256,7 +264,7 @@ static int xgene_allocate_domains(struct xgene_msi *msi)
> if (!msi->inner_domain)
> return -ENOMEM;
>
> - msi->msi_domain = pci_msi_create_irq_domain(of_node_to_fwnode(msi->node),
> + msi->msi_domain = pci_msi_create_irq_domain(msi->fwnode,
> &xgene_msi_domain_info,
> msi->inner_domain);
>
> @@ -265,6 +273,9 @@ static int xgene_allocate_domains(struct xgene_msi *msi)
> return -ENOMEM;
> }
>
> +#ifdef CONFIG_ACPI
> + pci_msi_register_fwnode_provider(&xgene_msi_get_fwnode);
> +#endif
> return 0;
> }
>
> @@ -473,6 +484,13 @@ static const struct of_device_id xgene_msi_match_table[] = {
> {},
> };
>
> +#ifdef CONFIG_ACPI
> +static const struct acpi_device_id xgene_msi_acpi_ids[] = {
> + {"APMC0D0E", 0},
> + { },
> +};
> +#endif
> +
> static int xgene_msi_probe(struct platform_device *pdev)
> {
> struct resource *res;
> @@ -494,7 +512,17 @@ static int xgene_msi_probe(struct platform_device *pdev)
> goto error;
> }
> xgene_msi->msi_addr = res->start;
> - xgene_msi->node = pdev->dev.of_node;
> +
> + xgene_msi->fwnode = of_node_to_fwnode(pdev->dev.of_node);
> + if (!xgene_msi->fwnode) {
> + xgene_msi->fwnode = irq_domain_alloc_fwnode(NULL);
> + if (!xgene_msi->fwnode) {
> + dev_err(&pdev->dev, "Failed to create fwnode\n");
> + rc = ENOMEM;
> + goto error;
> + }
> + }
> +
> xgene_msi->num_cpus = num_possible_cpus();
>
> rc = xgene_msi_init_allocator(xgene_msi);
> @@ -571,6 +599,7 @@ static struct platform_driver xgene_msi_driver = {
> .driver = {
> .name = "xgene-msi",
> .of_match_table = xgene_msi_match_table,
> + .acpi_match_table = ACPI_PTR(xgene_msi_acpi_ids),
> },
> .probe = xgene_msi_probe,
> .remove = xgene_msi_remove,
> --
> 1.9.1
>
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