Re: [PATCH v3 2/8] tpm: Extend TPMIfClass with get_irqnum() function

[Marc-André Lureau]

On Wed, Jun 17, 2020 at 12:57 AM Stefan Berger
<stefanb@linux.vnet.ibm.com> wrote:
>
> From: Stefan Berger <stefanb@sbct-2.pok.ibm.com>
>
> Implement get_irqnum() as part of the TPMIfClass to get the assigned IRQ
> number or TPM_IRQ_DISABLED (-1) in case IRQs cannot be used.
>
> Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>

Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>

> ---
>  hw/tpm/tpm_tis_isa.c    |  9 +++++++++
>  hw/tpm/tpm_tis_sysbus.c |  9 +++++++++
>  include/sysemu/tpm.h    | 12 ++++++++++++
>  3 files changed, 30 insertions(+)
>
> diff --git a/hw/tpm/tpm_tis_isa.c b/hw/tpm/tpm_tis_isa.c
> index 30ba37079d..ed6d422f05 100644
> --- a/hw/tpm/tpm_tis_isa.c
> +++ b/hw/tpm/tpm_tis_isa.c
> @@ -80,6 +80,14 @@ static enum TPMVersion tpm_tis_isa_get_tpm_version(TPMIf 
> *ti)
>      return tpm_tis_get_tpm_version(s);
>  }
>
> +static int8_t tpm_tis_isa_get_irqnum(TPMIf *ti)
> +{
> +    TPMStateISA *isadev = TPM_TIS_ISA(ti);
> +    TPMState *s = &isadev->state;
> +
> +    return s->irq_num;
> +}
> +
>  static void tpm_tis_isa_reset(DeviceState *dev)
>  {
>      TPMStateISA *isadev = TPM_TIS_ISA(dev);
> @@ -148,6 +156,7 @@ static void tpm_tis_isa_class_init(ObjectClass *klass, 
> void *data)
>      dc->reset = tpm_tis_isa_reset;
>      tc->request_completed = tpm_tis_isa_request_completed;
>      tc->get_version = tpm_tis_isa_get_tpm_version;
> +    tc->get_irqnum = tpm_tis_isa_get_irqnum;
>  }
>
>  static const TypeInfo tpm_tis_isa_info = {
> diff --git a/hw/tpm/tpm_tis_sysbus.c b/hw/tpm/tpm_tis_sysbus.c
> index eced1fc843..86b3988be5 100644
> --- a/hw/tpm/tpm_tis_sysbus.c
> +++ b/hw/tpm/tpm_tis_sysbus.c
> @@ -80,6 +80,14 @@ static enum TPMVersion 
> tpm_tis_sysbus_get_tpm_version(TPMIf *ti)
>      return tpm_tis_get_tpm_version(s);
>  }
>
> +static int8_t tpm_tis_sysbus_get_irqnum(TPMIf *ti)
> +{
> +    TPMStateSysBus *sbdev = TPM_TIS_SYSBUS(ti);
> +    TPMState *s = &sbdev->state;
> +
> +    return s->irq_num;
> +}
> +
>  static void tpm_tis_sysbus_reset(DeviceState *dev)
>  {
>      TPMStateSysBus *sbdev = TPM_TIS_SYSBUS(dev);
> @@ -137,6 +145,7 @@ static void tpm_tis_sysbus_class_init(ObjectClass *klass, 
> void *data)
>      dc->reset = tpm_tis_sysbus_reset;
>      tc->request_completed = tpm_tis_sysbus_request_completed;
>      tc->get_version = tpm_tis_sysbus_get_tpm_version;
> +    tc->get_irqnum = tpm_tis_sysbus_get_irqnum;
>  }
>
>  static const TypeInfo tpm_tis_sysbus_info = {
> diff --git a/include/sysemu/tpm.h b/include/sysemu/tpm.h
> index 03fb25941c..a81fb4e18e 100644
> --- a/include/sysemu/tpm.h
> +++ b/include/sysemu/tpm.h
> @@ -25,6 +25,8 @@ typedef enum TPMVersion {
>      TPM_VERSION_2_0 = 2,
>  } TPMVersion;
>
> +#define TPM_IRQ_DISABLED  -1
> +
>  #define TYPE_TPM_IF "tpm-if"
>  #define TPM_IF_CLASS(klass)                                 \
>      OBJECT_CLASS_CHECK(TPMIfClass, (klass), TYPE_TPM_IF)
> @@ -41,6 +43,7 @@ typedef struct TPMIfClass {
>      enum TpmModel model;
>      void (*request_completed)(TPMIf *obj, int ret);
>      enum TPMVersion (*get_version)(TPMIf *obj);
> +    int8_t (*get_irqnum)(TPMIf *obj);
>  } TPMIfClass;
>
>  #define TYPE_TPM_TIS_ISA            "tpm-tis"
> @@ -74,4 +77,13 @@ static inline TPMVersion tpm_get_version(TPMIf *ti)
>      return TPM_IF_GET_CLASS(ti)->get_version(ti);
>  }
>
> +static inline int8_t tpm_get_irqnum(TPMIf *ti)
> +{
> +    if (!ti || !TPM_IF_GET_CLASS(ti)->get_irqnum) {
> +        return TPM_IRQ_DISABLED;
> +    }
> +
> +    return TPM_IF_GET_CLASS(ti)->get_irqnum(ti);
> +}
> +
>  #endif /* QEMU_TPM_H */
> --
> 2.24.1
>