Re: [Qemu-devel] [PATCH 3/3] spapr_pci: fix "ibm, pe-total-#msi" value

[David Gibson <david@gibson.dropbear.id.au>]

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On Mon, Sep 10, 2018 at 01:02:22PM +0200, Cédric Le Goater wrote:
> The "ibm,pe-total-#msi" property of the sPAPR PHB defines the number
> of allocatable MSI interrupts. This is currently set to XICS_IRQS_SPAPR
> which covers the full IRQ number space of the machine. This is wrong.
> 
> Fix the definition by using the 'nr_msis' attribute of the sPAPRIrq
> class and remove XICS_IRQS_SPAPR which is now unused.
> 
> Signed-off-by: Cédric Le Goater <clg@kaod.org>

Oh.. right.. I think it makes more sense to just merge this into the
first patch.

> ---
>  include/hw/ppc/xics.h | 2 --
>  hw/ppc/spapr_irq.c    | 2 +-
>  hw/ppc/spapr_pci.c    | 5 +++--
>  3 files changed, 4 insertions(+), 5 deletions(-)
> 
> diff --git a/include/hw/ppc/xics.h b/include/hw/ppc/xics.h
> index 9c2916c9b23a..9958443d1984 100644
> --- a/include/hw/ppc/xics.h
> +++ b/include/hw/ppc/xics.h
> @@ -181,8 +181,6 @@ typedef struct XICSFabricClass {
>      ICPState *(*icp_get)(XICSFabric *xi, int server);
>  } XICSFabricClass;
>  
> -#define XICS_IRQS_SPAPR               1024
> -
>  void spapr_dt_xics(int nr_servers, void *fdt, uint32_t phandle);
>  
>  ICPState *xics_icp_get(XICSFabric *xi, int server);
> diff --git a/hw/ppc/spapr_irq.c b/hw/ppc/spapr_irq.c
> index b14d7bce00ea..e77b94cc685e 100644
> --- a/hw/ppc/spapr_irq.c
> +++ b/hw/ppc/spapr_irq.c
> @@ -290,7 +290,7 @@ int spapr_irq_find(sPAPRMachineState *spapr, int num, bool align, Error **errp)
>      return first + ics->offset;
>  }
>  
> -#define SPAPR_IRQ_XICS_LEGACY_NR_IRQS     XICS_IRQS_SPAPR
> +#define SPAPR_IRQ_XICS_LEGACY_NR_IRQS     0x400
>  
>  sPAPRIrq spapr_irq_xics_legacy = {
>      .nr_irqs     = SPAPR_IRQ_XICS_LEGACY_NR_IRQS,
> diff --git a/hw/ppc/spapr_pci.c b/hw/ppc/spapr_pci.c
> index 6bcb4f419b6b..bb736177e76c 100644
> --- a/hw/ppc/spapr_pci.c
> +++ b/hw/ppc/spapr_pci.c
> @@ -2121,6 +2121,7 @@ int spapr_populate_pci_dt(sPAPRPHBState *phb,
>      sPAPRTCETable *tcet;
>      PCIBus *bus = PCI_HOST_BRIDGE(phb)->bus;
>      sPAPRFDT s_fdt;
> +    sPAPRMachineClass *smc = SPAPR_MACHINE_GET_CLASS(qdev_get_machine());
>  
>      /* Start populating the FDT */
>      nodename = g_strdup_printf("pci@%" PRIx64, phb->buid);
> @@ -2138,8 +2139,8 @@ int spapr_populate_pci_dt(sPAPRPHBState *phb,
>      _FDT(fdt_setprop(fdt, bus_off, "ranges", &ranges, sizeof_ranges));
>      _FDT(fdt_setprop(fdt, bus_off, "reg", &bus_reg, sizeof(bus_reg)));
>      _FDT(fdt_setprop_cell(fdt, bus_off, "ibm,pci-config-space-type", 0x1));
> -    /* TODO: fine tune the total count of allocatable MSIs per PHB */
> -    _FDT(fdt_setprop_cell(fdt, bus_off, "ibm,pe-total-#msi", XICS_IRQS_SPAPR));
> +    _FDT(fdt_setprop_cell(fdt, bus_off, "ibm,pe-total-#msi",
> +                          smc->irq->nr_msis));
>  
>      /* Dynamic DMA window */
>      if (phb->ddw_enabled) {

-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson

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