GICv3: Introduce power management APIs for Redistributor
Some GICv3 implementations have provision for power management
operations at Redistributor level. This patch introduces and provides
place-holders for Redistributor power management. The default
implementations are empty stubs, but are weakly bound so as to enable
implementation-specific drivers to override them.
Change-Id: I4fec1358693d3603ca5dce242a2f7f0e730516d8
Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>
diff --git a/drivers/arm/gic/v3/gicv3_main.c b/drivers/arm/gic/v3/gicv3_main.c
index ac43372..5abaa1c 100644
--- a/drivers/arm/gic/v3/gicv3_main.c
+++ b/drivers/arm/gic/v3/gicv3_main.c
@@ -40,6 +40,13 @@
static const gicv3_driver_data_t *driver_data;
static unsigned int gicv2_compat;
+/*
+ * Redistributor power operations are weakly bound so that they can be
+ * overridden
+ */
+#pragma weak gicv3_rdistif_off
+#pragma weak gicv3_rdistif_on
+
/*******************************************************************************
* This function initialises the ARM GICv3 driver in EL3 with provided platform
* inputs.
@@ -188,6 +195,9 @@
assert(IS_IN_EL3());
+ /* Power on redistributor */
+ gicv3_rdistif_on(proc_num);
+
gicr_base = driver_data->rdistif_base_addrs[proc_num];
/* Set the default attribute of all SGIs and PPIs */
@@ -211,6 +221,19 @@
}
/*******************************************************************************
+ * Functions to perform power operations on GIC Redistributor
+ ******************************************************************************/
+void gicv3_rdistif_off(unsigned int proc_num)
+{
+ return;
+}
+
+void gicv3_rdistif_on(unsigned int proc_num)
+{
+ return;
+}
+
+/*******************************************************************************
* This function enables the GIC CPU interface of the calling CPU using only
* system register accesses.
******************************************************************************/