[Qemu-devel] [PULL 16/22] kvm: introduce kvm_arch_msi_data_to_gsi

[Peter Maydell <peter.maydell@linaro.org>]

From: Eric Auger <eric.auger@linaro.org>

On ARM the MSI data corresponds to the shared peripheral interrupt (SPI)
ID. This latter equals to the SPI index + 32. to retrieve the SPI index,
matching the gsi, an architecture specific function is introduced.

Signed-off-by: Eric Auger <eric.auger@linaro.org>
Acked-by: Christoffer Dall <christoffer.dall@linaro.org>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 include/sysemu/kvm.h | 2 ++
 kvm-all.c            | 2 +-
 target-arm/kvm.c     | 5 +++++
 target-i386/kvm.c    | 5 +++++
 target-mips/kvm.c    | 5 +++++
 target-ppc/kvm.c     | 5 +++++
 target-s390x/kvm.c   | 5 +++++
 7 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h
index 4878959..f459fbd 100644
--- a/include/sysemu/kvm.h
+++ b/include/sysemu/kvm.h
@@ -287,6 +287,8 @@ void kvm_arch_init_irq_routing(KVMState *s);
 int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
                              uint64_t address, uint32_t data);
 
+int kvm_arch_msi_data_to_gsi(uint32_t data);
+
 int kvm_set_irq(KVMState *s, int irq, int level);
 int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg);
 
diff --git a/kvm-all.c b/kvm-all.c
index 17a3771..b2b1bc3 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -1228,7 +1228,7 @@ int kvm_irqchip_add_msi_route(KVMState *s, MSIMessage msg)
     int virq;
 
     if (kvm_gsi_direct_mapping()) {
-        return msg.data & 0xffff;
+        return kvm_arch_msi_data_to_gsi(msg.data);
     }
 
     if (!kvm_gsi_routing_enabled()) {
diff --git a/target-arm/kvm.c b/target-arm/kvm.c
index 16abbf1..548bfd7 100644
--- a/target-arm/kvm.c
+++ b/target-arm/kvm.c
@@ -600,3 +600,8 @@ int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
 {
     return 0;
 }
+
+int kvm_arch_msi_data_to_gsi(uint32_t data)
+{
+    return (data - 32) & 0xffff;
+}
diff --git a/target-i386/kvm.c b/target-i386/kvm.c
index a26d25a..ca2da84 100644
--- a/target-i386/kvm.c
+++ b/target-i386/kvm.c
@@ -2766,3 +2766,8 @@ int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
 {
     return 0;
 }
+
+int kvm_arch_msi_data_to_gsi(uint32_t data)
+{
+    abort();
+}
diff --git a/target-mips/kvm.c b/target-mips/kvm.c
index 59eb111..948619f 100644
--- a/target-mips/kvm.c
+++ b/target-mips/kvm.c
@@ -696,3 +696,8 @@ int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
 {
     return 0;
 }
+
+int kvm_arch_msi_data_to_gsi(uint32_t data)
+{
+    abort();
+}
diff --git a/target-ppc/kvm.c b/target-ppc/kvm.c
index 1da9ea8..8f7cee5 100644
--- a/target-ppc/kvm.c
+++ b/target-ppc/kvm.c
@@ -2410,3 +2410,8 @@ int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
 {
     return 0;
 }
+
+int kvm_arch_msi_data_to_gsi(uint32_t data)
+{
+    return data & 0xffff;
+}
diff --git a/target-s390x/kvm.c b/target-s390x/kvm.c
index 6de7759..2740ec4 100644
--- a/target-s390x/kvm.c
+++ b/target-s390x/kvm.c
@@ -2216,3 +2216,8 @@ int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
     route->u.adapter.adapter_id = pbdev->routes.adapter.adapter_id;
     return 0;
 }
+
+int kvm_arch_msi_data_to_gsi(uint32_t data)
+{
+    abort();
+}
-- 
1.9.1