Re: [Qemu-devel] [PATCH v2 7/8] ppc/pnv: link the CPUs to the machine XICSFabric

[David Gibson]

On Thu, Mar 16, 2017 at 03:35:11PM +0100, Cédric Le Goater wrote:
> This assigns the ICPState object to the CPU using the PIR number for
> lookups before calling the XICS layer to finish the job.
> 
> Signed-off-by: Cédric Le Goater <address@hidden>

Reviewed-by: David Gibson <address@hidden>

> ---
>  hw/ppc/pnv.c      |  2 ++
>  hw/ppc/pnv_core.c | 20 ++++++++++++++++----
>  2 files changed, 18 insertions(+), 4 deletions(-)
> 
> diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
> index 6ff01c3b84d5..9c239932fb3a 100644
> --- a/hw/ppc/pnv.c
> +++ b/hw/ppc/pnv.c
> @@ -714,6 +714,8 @@ static void pnv_chip_realize(DeviceState *dev, Error 
> **errp)
>          object_property_set_int(OBJECT(pnv_core),
>                                  pcc->core_pir(chip, core_hwid),
>                                  "pir", &error_fatal);
> +        object_property_add_const_link(OBJECT(pnv_core), "xics",
> +                                       qdev_get_machine(), &error_fatal);
>          object_property_set_bool(OBJECT(pnv_core), true, "realized",
>                                   &error_fatal);
>          object_unref(OBJECT(pnv_core));
> diff --git a/hw/ppc/pnv_core.c b/hw/ppc/pnv_core.c
> index d79d530b4881..6ec1c9c0a831 100644
> --- a/hw/ppc/pnv_core.c
> +++ b/hw/ppc/pnv_core.c
> @@ -25,6 +25,7 @@
>  #include "hw/ppc/pnv.h"
>  #include "hw/ppc/pnv_core.h"
>  #include "hw/ppc/pnv_xscom.h"
> +#include "hw/ppc/xics.h"
>  
>  static void powernv_cpu_reset(void *opaque)
>  {
> @@ -43,7 +44,7 @@ static void powernv_cpu_reset(void *opaque)
>      env->msr |= MSR_HVB; /* Hypervisor mode */
>  }
>  
> -static void powernv_cpu_init(PowerPCCPU *cpu, Error **errp)
> +static void powernv_cpu_init(PowerPCCPU *cpu, XICSFabric *xi, Error **errp)
>  {
>      CPUPPCState *env = &cpu->env;
>      int core_pir;
> @@ -63,6 +64,9 @@ static void powernv_cpu_init(PowerPCCPU *cpu, Error **errp)
>      cpu_ppc_tb_init(env, PNV_TIMEBASE_FREQ);
>  
>      qemu_register_reset(powernv_cpu_reset, cpu);
> +
> +    cpu->icp = xics_icp_get(xi, pir->default_value);
> +    xics_cpu_setup(xi, cpu);
>  }
>  
>  /*
> @@ -110,7 +114,7 @@ static const MemoryRegionOps pnv_core_xscom_ops = {
>      .endianness = DEVICE_BIG_ENDIAN,
>  };
>  
> -static void pnv_core_realize_child(Object *child, Error **errp)
> +static void pnv_core_realize_child(Object *child, XICSFabric *xi, Error 
> **errp)
>  {
>      Error *local_err = NULL;
>      CPUState *cs = CPU(child);
> @@ -122,7 +126,7 @@ static void pnv_core_realize_child(Object *child, Error 
> **errp)
>          return;
>      }
>  
> -    powernv_cpu_init(cpu, &local_err);
> +    powernv_cpu_init(cpu, xi, &local_err);
>      if (local_err) {
>          error_propagate(errp, local_err);
>          return;
> @@ -140,6 +144,14 @@ static void pnv_core_realize(DeviceState *dev, Error 
> **errp)
>      void *obj;
>      int i, j;
>      char name[32];
> +    Object *xi;
> +
> +    xi = object_property_get_link(OBJECT(dev), "xics", &local_err);
> +    if (!xi) {
> +        error_setg(errp, "%s: required link 'xics' not found: %s",
> +                   __func__, error_get_pretty(local_err));
> +        return;
> +    }
>  
>      pc->threads = g_malloc0(size * cc->nr_threads);
>      for (i = 0; i < cc->nr_threads; i++) {
> @@ -160,7 +172,7 @@ static void pnv_core_realize(DeviceState *dev, Error 
> **errp)
>      for (j = 0; j < cc->nr_threads; j++) {
>          obj = pc->threads + j * size;
>  
> -        pnv_core_realize_child(obj, &local_err);
> +        pnv_core_realize_child(obj, XICS_FABRIC(xi), &local_err);
>          if (local_err) {
>              goto err;
>          }

-- 
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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