diff options
| -rw-r--r-- | Documentation/devicetree/bindings/interrupt-controller/mips-gic.txt | 7 | ||||
| -rw-r--r-- | drivers/irqchip/irq-mips-gic.c | 12 |
2 files changed, 17 insertions, 2 deletions
diff --git a/Documentation/devicetree/bindings/interrupt-controller/mips-gic.txt b/Documentation/devicetree/bindings/interrupt-controller/mips-gic.txt index aae4c384ee1f..173595305e26 100644 --- a/Documentation/devicetree/bindings/interrupt-controller/mips-gic.txt +++ b/Documentation/devicetree/bindings/interrupt-controller/mips-gic.txt @@ -23,6 +23,12 @@ Optional properties: - mti,reserved-cpu-vectors : Specifies the list of CPU interrupt vectors to which the GIC may not route interrupts. Valid values are 2 - 7. This property is ignored if the CPU is started in EIC mode. +- mti,reserved-ipi-vectors : Specifies the range of GIC interrupts that are + reserved for IPIs. + It accepts 2 values, the 1st is the starting interrupt and the 2nd is the size + of the reserved range. + If not specified, the driver will allocate the last 2 * number of VPEs in the + system. Required properties for timer sub-node: - compatible : Should be "mti,gic-timer". @@ -44,6 +50,7 @@ Example: #interrupt-cells = <3>; mti,reserved-cpu-vectors = <7>; + mti,reserved-ipi-vectors = <40 8>; timer { compatible = "mti,gic-timer"; diff --git a/drivers/irqchip/irq-mips-gic.c b/drivers/irqchip/irq-mips-gic.c index 37831a557bcb..94a30da0cfac 100644 --- a/drivers/irqchip/irq-mips-gic.c +++ b/drivers/irqchip/irq-mips-gic.c @@ -957,6 +957,7 @@ static void __init __gic_init(unsigned long gic_base_addr, struct device_node *node) { unsigned int gicconfig; + unsigned int v[2]; __gic_base_addr = gic_base_addr; @@ -1027,8 +1028,15 @@ static void __init __gic_init(unsigned long gic_base_addr, gic_ipi_domain->bus_token = DOMAIN_BUS_IPI; - /* Make the last 2 * gic_vpes available for IPIs */ - bitmap_set(ipi_resrv, gic_shared_intrs - 2 * gic_vpes, 2 * gic_vpes); + if (node && + !of_property_read_u32_array(node, "mti,reserved-ipi-vectors", v, 2)) { + bitmap_set(ipi_resrv, v[0], v[1]); + } else { + /* Make the last 2 * gic_vpes available for IPIs */ + bitmap_set(ipi_resrv, + gic_shared_intrs - 2 * gic_vpes, + 2 * gic_vpes); + } gic_basic_init(); } |