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Re: [Qemu-ppc] [PATCH 11/21] ppc/pnv: scan ISA bus to populate device tr


From: Cédric Le Goater
Subject: Re: [Qemu-ppc] [PATCH 11/21] ppc/pnv: scan ISA bus to populate device tree
Date: Mon, 10 Apr 2017 15:21:19 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0

On 04/10/2017 03:16 PM, Greg Kurz wrote:
> On Wed,  5 Apr 2017 14:41:36 +0200
> Cédric Le Goater <address@hidden> wrote:
> 
>> This is an empty shell that we will use to include nodes in the device
>> tree for ISA devices. We expect RTC, UART and IPMI BT devices.
>>
>> Signed-off-by: Cédric Le Goater <address@hidden>
>> ---
>>  hw/ppc/pnv.c | 32 ++++++++++++++++++++++++++++++++
>>  1 file changed, 32 insertions(+)
>>
>> diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
>> index 493c7eed7980..a3c8f6594d10 100644
>> --- a/hw/ppc/pnv.c
>> +++ b/hw/ppc/pnv.c
>> @@ -281,6 +281,36 @@ static void powernv_populate_chip(PnvChip *chip, void 
>> *fdt)
>>      g_free(typename);
>>  }
>>  
>> +typedef struct ForeachPopulateArgs {
>> +    void *fdt;
>> +    int offset;
>> +} ForeachPopulateArgs;
>> +
>> +static int powernv_populate_isa_device(DeviceState *dev, void *opaque)
>> +{
>> +    return 0;
>> +}
>> +
>> +static void powernv_populate_isa(ISABus *bus, void *fdt)
>> +{
>> +    int lpc_offset;
>> +    ForeachPopulateArgs args;
>> +
>> +    lpc_offset = fdt_node_offset_by_compatible(fdt, -1, "ibm,lpc");
>> +    if (lpc_offset < 0) {
>> +        error_report("Could find the lpc node !?");
> 
> s/Could find/Could not find ?

yes. I will fix that.  

Thanks,

C. 

> 
>> +        return;
>> +    }
>> +
>> +    args.fdt = fdt;
>> +    args.offset = lpc_offset;
>> +
>> +    /* ISA devices are not necessarily parented to the ISA bus so we
>> +     * can not use object_child_foreach() */
>> +    qbus_walk_children(BUS(bus), powernv_populate_isa_device,
>> +                       NULL, NULL, NULL, &args);
>> +}
>> +
>>  static void *powernv_create_fdt(MachineState *machine)
>>  {
>>      const char plat_compat[] = "qemu,powernv\0ibm,powernv";
>> @@ -328,6 +358,8 @@ static void *powernv_create_fdt(MachineState *machine)
>>      for (i = 0; i < pnv->num_chips; i++) {
>>          powernv_populate_chip(pnv->chips[i], fdt);
>>      }
>> +
>> +    powernv_populate_isa(pnv->isa_bus, fdt);
>>      return fdt;
>>  }
>>  
> 




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