GIC: Add API to set/clear interrupt pending
API documentation updated.
Change-Id: I14e33cfc7dfa93257c82d76fae186b17a1b6d266
Co-authored-by: Yousuf A <yousuf.sait@arm.com>
Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>
diff --git a/drivers/arm/gic/v2/gicv2_main.c b/drivers/arm/gic/v2/gicv2_main.c
index f0b902c..eab4c3b 100644
--- a/drivers/arm/gic/v2/gicv2_main.c
+++ b/drivers/arm/gic/v2/gicv2_main.c
@@ -438,3 +438,41 @@
gicd_set_itargetsr(driver_data->gicd_base, id, target);
}
+
+/*******************************************************************************
+ * This function clears the pending status of an interrupt identified by id.
+ ******************************************************************************/
+void gicv2_clear_interrupt_pending(unsigned int id)
+{
+ assert(driver_data);
+ assert(driver_data->gicd_base);
+
+ /* SGIs can't be cleared pending */
+ assert(id >= MIN_PPI_ID);
+
+ /*
+ * Clear pending interrupt, and ensure that any shared variable updates
+ * depending on out of band interrupt trigger are observed afterwards.
+ */
+ gicd_set_icpendr(driver_data->gicd_base, id);
+ dsbishst();
+}
+
+/*******************************************************************************
+ * This function sets the pending status of an interrupt identified by id.
+ ******************************************************************************/
+void gicv2_set_interrupt_pending(unsigned int id)
+{
+ assert(driver_data);
+ assert(driver_data->gicd_base);
+
+ /* SGIs can't be cleared pending */
+ assert(id >= MIN_PPI_ID);
+
+ /*
+ * Ensure that any shared variable updates depending on out of band
+ * interrupt trigger are observed before setting interrupt pending.
+ */
+ dsbishst();
+ gicd_set_ispendr(driver_data->gicd_base, id);
+}