[Xen-devel] [RFC PATCH v3 14/18] xen/arm: ITS: Initialize physical ITS

[vijay.kilari@xxxxxxxxx]

From: Vijaya Kumar K <Vijaya.Kumar@xxxxxxxxxxxxxxxxxx>

Initialize physical ITS driver from GIC v3 driver
if LPIs are supported by hardware

Signed-off-by: Vijaya Kumar K <Vijaya.Kumar@xxxxxxxxxxxxxxxxxx>
---
 xen/arch/arm/gic-v3.c         |    7 +++++++
 xen/include/asm-arm/gic-its.h |    2 ++
 2 files changed, 9 insertions(+)

diff --git a/xen/arch/arm/gic-v3.c b/xen/arch/arm/gic-v3.c
index 793f2f0..18971ed 100644
--- a/xen/arch/arm/gic-v3.c
+++ b/xen/arch/arm/gic-v3.c
@@ -700,6 +700,10 @@ static int __cpuinit gicv3_cpu_init(void)
     if ( gicv3_enable_redist() )
         return -ENODEV;
 
+        /* Give LPIs a spin */
+    if ( gicv3_info.lpi_supported )
+        its_cpu_init();
+
     /* Set priority on PPI and SGI interrupts */
     priority = (GIC_PRI_IPI << 24 | GIC_PRI_IPI << 16 | GIC_PRI_IPI << 8 |
                 GIC_PRI_IPI);
@@ -1327,6 +1331,9 @@ static int __init gicv3_init(void)
     else
         gicv3_info.lpi_supported = 0;
 
+    if ( gicv3_info.lpi_supported )
+        its_init(&gicv3.rdist_data);
+
     gicv3_dist_init();
     res = gicv3_cpu_init();
     gicv3_hyp_init();
diff --git a/xen/include/asm-arm/gic-its.h b/xen/include/asm-arm/gic-its.h
index f34a207..c674b3f 100644
--- a/xen/include/asm-arm/gic-its.h
+++ b/xen/include/asm-arm/gic-its.h
@@ -274,6 +274,8 @@ static inline uint32_t its_decode_devid(struct domain *d, 
its_cmd_block *cmd)
     return (cmd->raw_cmd[0] >> 32);  
 }
 
+int its_cpu_init(void);
+int its_init(struct rdist_prop *rdist);
 void its_set_affinity(struct irq_desc *desc, int cpu);
 void lpi_set_config(struct irq_desc *desc, int enable);
 uint8_t vgic_its_get_priority(struct vcpu *v, uint32_t pid);
-- 
1.7.9.5


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