[12/17] pseries: savevm support for PCI host bridge

From: David Gibson <david@gibson.dropbear.id.au>

This adds the necessary support for saving the state of the PAPR virtual
PCI host bridge (or host bridges).

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
---
 hw/ppc/spapr_pci.c          |   49 +++++++++++++++++++++++++++++++++++++++++++
 include/hw/pci-host/spapr.h |    6 +++---
 2 files changed, 52 insertions(+), 3 deletions(-)

Alexey Kardashevskiy <aik@ozlabs.ru> writes:

> From: David Gibson <david@gibson.dropbear.id.au>
>
> This adds the necessary support for saving the state of the PAPR virtual
> PCI host bridge (or host bridges).
>
> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
> Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>

Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>

Regards,

Anthony Liguori

> ---
>  hw/ppc/spapr_pci.c          |   49 +++++++++++++++++++++++++++++++++++++++++++
>  include/hw/pci-host/spapr.h |    6 +++---
>  2 files changed, 52 insertions(+), 3 deletions(-)
>
> diff --git a/hw/ppc/spapr_pci.c b/hw/ppc/spapr_pci.c
> index c8c12c8..4d8e3cd 100644
> --- a/hw/ppc/spapr_pci.c
> +++ b/hw/ppc/spapr_pci.c
> @@ -696,6 +696,54 @@ static Property spapr_phb_properties[] = {
>      DEFINE_PROP_END_OF_LIST(),
>  };
>  
> +static const VMStateDescription vmstate_spapr_pci_lsi = {
> +    .name = "spapr_pci/lsi",
> +    .version_id = 1,
> +    .minimum_version_id = 1,
> +    .minimum_version_id_old = 1,
> +    .fields      = (VMStateField []) {
> +        VMSTATE_UINT32_EQUAL(irq, struct spapr_pci_lsi),
> +
> +        VMSTATE_END_OF_LIST()
> +    },
> +};
> +
> +static const VMStateDescription vmstate_spapr_pci_msi = {
> +    .name = "spapr_pci/lsi",
> +    .version_id = 1,
> +    .minimum_version_id = 1,
> +    .minimum_version_id_old = 1,
> +    .fields      = (VMStateField []) {
> +        VMSTATE_UINT32(config_addr, struct spapr_pci_msi),
> +        VMSTATE_UINT32(irq, struct spapr_pci_msi),
> +        VMSTATE_UINT32(nvec, struct spapr_pci_msi),
> +
> +        VMSTATE_END_OF_LIST()
> +    },
> +};
> +
> +static const VMStateDescription vmstate_spapr_pci = {
> +    .name = "spapr_pci",
> +    .version_id = 1,
> +    .minimum_version_id = 1,
> +    .minimum_version_id_old = 1,
> +    .fields      = (VMStateField []) {
> +        VMSTATE_UINT64_EQUAL(buid, sPAPRPHBState),
> +        VMSTATE_UINT32_EQUAL(dma_liobn, sPAPRPHBState),
> +        VMSTATE_UINT64_EQUAL(mem_win_addr, sPAPRPHBState),
> +        VMSTATE_UINT64_EQUAL(mem_win_size, sPAPRPHBState),
> +        VMSTATE_UINT64_EQUAL(io_win_addr, sPAPRPHBState),
> +        VMSTATE_UINT64_EQUAL(io_win_size, sPAPRPHBState),
> +        VMSTATE_UINT64_EQUAL(msi_win_addr, sPAPRPHBState),
> +        VMSTATE_STRUCT_ARRAY(lsi_table, sPAPRPHBState, PCI_NUM_PINS, 0,
> +                             vmstate_spapr_pci_lsi, struct spapr_pci_lsi),
> +        VMSTATE_STRUCT_ARRAY(msi_table, sPAPRPHBState, SPAPR_MSIX_MAX_DEVS, 0,
> +                             vmstate_spapr_pci_msi, struct spapr_pci_msi),
> +
> +        VMSTATE_END_OF_LIST()
> +    },
> +};
> +
>  static void spapr_phb_class_init(ObjectClass *klass, void *data)
>  {
>      SysBusDeviceClass *sdc = SYS_BUS_DEVICE_CLASS(klass);
> @@ -704,6 +752,7 @@ static void spapr_phb_class_init(ObjectClass *klass, void *data)
>      sdc->init = spapr_phb_init;
>      dc->props = spapr_phb_properties;
>      dc->reset = spapr_phb_reset;
> +    dc->vmsd = &vmstate_spapr_pci;
>  }
>  
>  static const TypeInfo spapr_phb_info = {
> diff --git a/include/hw/pci-host/spapr.h b/include/hw/pci-host/spapr.h
> index 1e23dbf..93f9511 100644
> --- a/include/hw/pci-host/spapr.h
> +++ b/include/hw/pci-host/spapr.h
> @@ -52,14 +52,14 @@ typedef struct sPAPRPHBState {
>      sPAPRTCETable *tcet;
>      AddressSpace iommu_as;
>  
> -    struct {
> +    struct spapr_pci_lsi {
>          uint32_t irq;
>      } lsi_table[PCI_NUM_PINS];
>  
> -    struct {
> +    struct spapr_pci_msi {
>          uint32_t config_addr;
>          uint32_t irq;
> -        int nvec;
> +        uint32_t nvec;
>      } msi_table[SPAPR_MSIX_MAX_DEVS];
>  
>      QLIST_ENTRY(sPAPRPHBState) list;
> -- 
> 1.7.10.4