Re: [Qemu-devel] [PATCH 1/2] kvm: introduce kvm_arch_msi_data_to_gsi

[Paolo Bonzini <pbonzini@redhat.com>]

On 09/04/2015 17:20, Eric Auger wrote:
> 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>
> ---
>  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 +++++

Please abort on i386/mips/s390x, as they do not set
kvm_gsi_direct_mapping(); ok with this change.

Paolo

>  7 files changed, 28 insertions(+), 1 deletion(-)
> 
> diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h
> index 197e6c0..ebd8b17 100644
> --- a/include/sysemu/kvm.h
> +++ b/include/sysemu/kvm.h
> @@ -286,6 +286,8 @@ 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 dd44f8c..3e9675e 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 fdd9ba3..05d5634 100644
> --- a/target-arm/kvm.c
> +++ b/target-arm/kvm.c
> @@ -598,3 +598,8 @@ 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 41d09e5..7c648e7 100644
> --- a/target-i386/kvm.c
> +++ b/target-i386/kvm.c
> @@ -2764,3 +2764,8 @@ 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-mips/kvm.c b/target-mips/kvm.c
> index 4d1f7ea..e53e059 100644
> --- a/target-mips/kvm.c
> +++ b/target-mips/kvm.c
> @@ -694,3 +694,8 @@ 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-ppc/kvm.c b/target-ppc/kvm.c
> index 12328a4..53569f6 100644
> --- a/target-ppc/kvm.c
> +++ b/target-ppc/kvm.c
> @@ -2408,3 +2408,8 @@ 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 b48c643..6509aff 100644
> --- a/target-s390x/kvm.c
> +++ b/target-s390x/kvm.c
> @@ -1940,3 +1940,8 @@ 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)
> +{
> +    return data & 0xffff;
> +}
>