[PATCH 1/2] hw/arm/sbsa-ref: add ITS support in SBSA GIC

[Marcin Juszkiewicz]

From: Shashi Mallela <shashi.mallela@linaro.org>

Included creation of ITS as part of SBSA platform GIC
initialization.

Signed-off-by: Shashi Mallela <shashi.mallela@linaro.org>

---
 hw/arm/sbsa-ref.c | 26 ++++++++++++++++++++++++--
 1 file changed, 24 insertions(+), 2 deletions(-)

diff --git a/hw/arm/sbsa-ref.c b/hw/arm/sbsa-ref.c
index de21200ff9..1520cd598c 100644
--- a/hw/arm/sbsa-ref.c
+++ b/hw/arm/sbsa-ref.c
@@ -65,6 +65,7 @@ enum {
     SBSA_CPUPERIPHS,
     SBSA_GIC_DIST,
     SBSA_GIC_REDIST,
+    SBSA_GIC_ITS,
     SBSA_SECURE_EC,
     SBSA_GWDT_WS0,
     SBSA_GWDT_REFRESH,
@@ -108,6 +109,7 @@ static const MemMapEntry sbsa_ref_memmap[] = {
     [SBSA_CPUPERIPHS] =         { 0x40000000, 0x00040000 },
     [SBSA_GIC_DIST] =           { 0x40060000, 0x00010000 },
     [SBSA_GIC_REDIST] =         { 0x40080000, 0x04000000 },
+    [SBSA_GIC_ITS] =            { 0x44081000, 0x00020000 },
     [SBSA_SECURE_EC] =          { 0x50000000, 0x00001000 },
     [SBSA_GWDT_REFRESH] =       { 0x50010000, 0x00001000 },
     [SBSA_GWDT_CONTROL] =       { 0x50011000, 0x00001000 },
@@ -409,7 +411,20 @@ static void create_secure_ram(SBSAMachineState *sms,
     memory_region_add_subregion(secure_sysmem, base, secram);
 }
 
-static void create_gic(SBSAMachineState *sms)
+static void create_its(SBSAMachineState *sms)
+{
+    const char *itsclass = its_class_name();
+    DeviceState *dev;
+
+    dev = qdev_new(itsclass);
+
+    object_property_set_link(OBJECT(dev), "parent-gicv3", OBJECT(sms->gic),
+                             &error_abort);
+    sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
+    sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, 
sbsa_ref_memmap[SBSA_GIC_ITS].base);
+}
+
+static void create_gic(SBSAMachineState *sms, MemoryRegion *mem)
 {
     unsigned int smp_cpus = MACHINE(sms)->smp.cpus;
     SysBusDevice *gicbusdev;
@@ -436,6 +451,12 @@ static void create_gic(SBSAMachineState *sms)
     qdev_prop_set_uint32(sms->gic, "len-redist-region-count", 1);
     qdev_prop_set_uint32(sms->gic, "redist-region-count[0]", redist0_count);
 
+    if (!kvm_irqchip_in_kernel()) {
+        object_property_set_link(OBJECT(sms->gic), "sysmem",
+                                OBJECT(mem), &error_fatal);
+        qdev_prop_set_bit(sms->gic, "has-lpi", true);
+    }
+
     gicbusdev = SYS_BUS_DEVICE(sms->gic);
     sysbus_realize_and_unref(gicbusdev, &error_fatal);
     sysbus_mmio_map(gicbusdev, 0, sbsa_ref_memmap[SBSA_GIC_DIST].base);
@@ -482,6 +503,7 @@ static void create_gic(SBSAMachineState *sms)
         sysbus_connect_irq(gicbusdev, i + 3 * smp_cpus,
                            qdev_get_gpio_in(cpudev, ARM_CPU_VFIQ));
     }
+    create_its(sms);
 }
 
 static void create_uart(const SBSAMachineState *sms, int uart,
@@ -788,7 +810,7 @@ static void sbsa_ref_init(MachineState *machine)
 
     create_secure_ram(sms, secure_sysmem);
 
-    create_gic(sms);
+    create_gic(sms, sysmem);
 
     create_uart(sms, SBSA_UART, sysmem, serial_hd(0));
     create_uart(sms, SBSA_SECURE_UART, secure_sysmem, serial_hd(1));
-- 
2.40.1