[Xen-devel] [PATCH v3 5/5] ARM: ITS: Expose ITS in the MADT table

[mjaggi@xxxxxxxxxxxxxxxxxx]

From: Manish Jaggi <mjaggi@xxxxxxxxxx>

Add gicv3_its_make_hwdom_madt to update hwdom MADT ITS information.

Signed-off-by: Manish Jaggi <mjaggi@xxxxxxxxxx>
---
 xen/arch/arm/gic-v3-its.c        | 23 +++++++++++++++++++++++
 xen/arch/arm/gic-v3.c            |  1 +
 xen/include/asm-arm/gic_v3_its.h |  8 ++++++++
 3 files changed, 32 insertions(+)

diff --git a/xen/arch/arm/gic-v3-its.c b/xen/arch/arm/gic-v3-its.c
index 0ab1466..bf84db8 100644
--- a/xen/arch/arm/gic-v3-its.c
+++ b/xen/arch/arm/gic-v3-its.c
@@ -1064,6 +1064,29 @@ void gicv3_its_acpi_init(void)
     acpi_table_parse_madt(ACPI_MADT_TYPE_GENERIC_TRANSLATOR,
                                   gicv3_its_acpi_probe, 0);
 }
+
+unsigned long gicv3_its_make_hwdom_madt(const struct domain *d, u8 *base_ptr,
+                                        unsigned long offset)
+{
+    unsigned long i;
+    struct acpi_madt_generic_translator *fw_its;
+    struct acpi_madt_generic_translator *hwdom_its;
+
+    hwdom_its = (struct acpi_madt_generic_translator *)(base_ptr
+                   + offset);
+
+    for ( i = 0; i < vgic_v3_its_count(d); i++ )
+    {
+        fw_its = (struct acpi_madt_generic_translator *)
+                    acpi_table_get_entry_madt(
+                        ACPI_MADT_TYPE_GENERIC_TRANSLATOR, i);
+        memcpy(hwdom_its, fw_its, sizeof(struct acpi_madt_generic_translator));
+        hwdom_its++;
+    }
+
+    return (offset + sizeof(struct acpi_madt_generic_translator)
+                               * vgic_v3_its_count(d));
+}
 #endif
 
 /*
diff --git a/xen/arch/arm/gic-v3.c b/xen/arch/arm/gic-v3.c
index 3eb67f2..0392795 100644
--- a/xen/arch/arm/gic-v3.c
+++ b/xen/arch/arm/gic-v3.c
@@ -1403,6 +1403,7 @@ static int gicv3_make_hwdom_madt(const struct domain *d, 
u32 offset)
         table_len += size;
     }
 
+    table_len = gicv3_its_make_hwdom_madt(d, base_ptr, table_len);
     return table_len;
 }
 
diff --git a/xen/include/asm-arm/gic_v3_its.h b/xen/include/asm-arm/gic_v3_its.h
index 9cf18da..ae8a494 100644
--- a/xen/include/asm-arm/gic_v3_its.h
+++ b/xen/include/asm-arm/gic_v3_its.h
@@ -137,6 +137,8 @@ void gicv3_its_dt_init(const struct dt_device_node *node);
 
 #ifdef CONFIG_ACPI
 void gicv3_its_acpi_init(void);
+unsigned long gicv3_its_make_hwdom_madt(const struct domain *d, u8 *base_ptr,
+                                        unsigned long offset);
 #endif
 
 /* Deny iomem access for its */
@@ -207,6 +209,12 @@ static inline void gicv3_its_dt_init(const struct 
dt_device_node *node)
 static inline void gicv3_its_acpi_init(void)
 {
 }
+
+unsigned long gicv3_its_make_hwdom_madt(struct domain *d, u8 *base_ptr,
+                                        unsigned long offset)
+{
+    return 0;
+}
 #endif
 
 static inline int gicv3_its_deny_access(const struct domain *d)
-- 
2.7.4


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