Add the bus tokens for DOMAIN_BUS_PCI_DEVICE_MSI and
DOMAIN_BUS_PCI_DEVICE_MSIX to the common child init
function and enable the parent mask/unmask static key
in the PCI/MSI core.
Provide the match mask which can be used by parent domain
implementation so the bitmask based child bus token match
works.
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
drivers/irqchip/irq-gic-msi-lib.c | 7 +++++++
drivers/irqchip/irq-gic-msi-lib.h | 6 ++++++
2 files changed, 13 insertions(+)
--- a/drivers/irqchip/irq-gic-msi-lib.c
+++ b/drivers/irqchip/irq-gic-msi-lib.c
@@ -48,6 +48,13 @@ bool gic_msi_lib_init_dev_msi_info(struc
/* Is the target domain bus token supported ? */
switch(info->bus_token) {
+ case DOMAIN_BUS_PCI_DEVICE_MSI:
+ case DOMAIN_BUS_PCI_DEVICE_MSIX:
+ if (WARN_ON_ONCE(!IS_ENABLED(CONFIG_PCI_MSI)))
+ return false;
+
+ pci_device_msi_mask_unmask_parent_enable();
+ break;
default:
/*
* This should never be reached. See
--- a/drivers/irqchip/irq-gic-msi-lib.h
+++ b/drivers/irqchip/irq-gic-msi-lib.h
@@ -9,6 +9,12 @@
#include <linux/irqdomain.h>
#include <linux/msi.h>
+#ifdef CONFIG_PCI_MSI
+#define MATCH_PCI_MSI BIT(DOMAIN_BUS_PCI_MSI)
+#else
+#define MATCH_PCI_MSI (0)
+#endif
+
int gic_msi_lib_irq_domain_select(struct irq_domain *d, struct irq_fwspec *fwspec,
enum irq_domain_bus_token bus_token);
