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arch: aarch64: Add GICv3-ITS on AArch64

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GICv3-ITS is needed for MSI handling.

Signed-off-by: Michael Zhao <michael.zhao@arm.com>
This commit is contained in:
Michael Zhao
2020-06-02 16:57:55 +08:00
committed by Rob Bradford
parent 17057a0dd9
commit 598bcf1459
7 changed files with 182 additions and 21 deletions
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arch/src/aarch64/fdt.rs
+15 -1
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@@ -23,8 +23,11 @@ use vm_memory::{Address, Bytes, GuestAddress, GuestMemory, GuestMemoryError, Gue
// This is a value for uniquely identifying the FDT node declaring the interrupt controller.
const GIC_PHANDLE: u32 = 1;
// This is a value for uniquely identifying the FDT node declaring the MSI controller.
const MSI_PHANDLE: u32 = 2;
// This is a value for uniquely identifying the FDT node containing the clock definition.
const CLOCK_PHANDLE: u32 = 2;
const CLOCK_PHANDLE: u32 = 3;
// Read the documentation specified when appending the root node to the FDT.
const ADDRESS_CELLS: u32 = 0x2;
const SIZE_CELLS: u32 = 0x2;
@@ -389,6 +392,17 @@ fn create_gic_node(fdt: &mut Vec<u8>, gic_device: &Box<dyn GICDevice>) -> Result
let gic_intr_prop = generate_prop32(&gic_intr);
append_property(fdt, "interrupts", &gic_intr_prop)?;
if gic_device.msi_compatible() {
append_begin_node(fdt, "msic")?;
append_property_string(fdt, "compatible", gic_device.msi_compatiblility())?;
append_property_null(fdt, "msi-controller")?;
append_property_u32(fdt, "phandle", MSI_PHANDLE)?;
let msi_reg_prop = generate_prop64(gic_device.msi_properties());
append_property(fdt, "reg", &msi_reg_prop)?;
append_end_node(fdt)?;
}
append_end_node(fdt)?;
Ok(())