Re: [Qemu-devel] Re: [Qemu-commits] [COMMIT ee6847d] qdev: rework device properties.

[Filip Navara <filip.navara@gmail.com>]

On Fri, Jul 17, 2009 at 11:39 AM, Blue Swirl<blauwirbel@gmail.com> wrote:
> On Fri, Jul 17, 2009 at 2:12 AM, Anthony Liguori<aliguori@us.ibm.com> wrote:
>> From: Gerd Hoffmann <kraxel@redhat.com>
>>
>> This patch is a major overhaul of the device properties.  The properties
>> are saved directly in the device state struct now, the linked list of
>> property values is gone.
>
>>     .qdev.name  = "fdc",
>>     .qdev.size  = sizeof(fdctrl_t),
>> -    .qdev.props = (DevicePropList[]) {
>> -        {.name = "io_base", .type = PROP_TYPE_INT},
>> -        {.name = "strict_io", .type = PROP_TYPE_INT},
>> -        {.name = "mem_mapped", .type = PROP_TYPE_INT},
>> -        {.name = "sun4m", .type = PROP_TYPE_INT},
>> -        {.name = NULL}
>> +    .qdev.props = (Property[]) {
>> +        {
>> +            .name = "io_base",
>> +            .info = &qdev_prop_uint32,
>> +            .offset = offsetof(fdctrl_t, io_base),
>> +        },
>
> This is broken, on SS-600MP, SS-10 and SS-20 fdc is located above 4G.
> The correct type is target_phys_addr_t. I'll fix this.
>
>> +typedef struct RamDevice
>> +{
>> +    SysBusDevice busdev;
>> +    uint32_t size;
>> +} RamDevice;
>> +
>>  /* System RAM */
>>  static void ram_init1(SysBusDevice *dev)
>>  {
>>     ram_addr_t RAM_size, ram_offset;
>> +    RamDevice *d = FROM_SYSBUS(RamDevice, dev);
>>
>> -    RAM_size = qdev_get_prop_int(&dev->qdev, "size", 0);
>> +    RAM_size = d->size;
>>
>>     ram_offset = qemu_ram_alloc(RAM_size);
>>     sysbus_init_mmio(dev, RAM_size, ram_offset);
>> @@ -496,6 +499,7 @@ static void ram_init(target_phys_addr_t addr, ram_addr_t RAM_size,
>>  {
>>     DeviceState *dev;
>>     SysBusDevice *s;
>> +    RamDevice *d;
>>
>>     /* allocate RAM */
>>     if ((uint64_t)RAM_size > max_mem) {
>> @@ -506,20 +510,26 @@ static void ram_init(target_phys_addr_t addr, ram_addr_t RAM_size,
>>         exit(1);
>>     }
>>     dev = qdev_create(NULL, "memory");
>> -    qdev_set_prop_int(dev, "size", RAM_size);
>>     qdev_init(dev);
>>     s = sysbus_from_qdev(dev);
>>
>> +    d = FROM_SYSBUS(RamDevice, s);
>> +    d->size = RAM_size;
>> +
>>     sysbus_mmio_map(s, 0, addr);
>>  }
>
> This is completely hosed because of the wrong order of setting
> d->size. Now qemu_ram_alloc gets passed a zero.

Move the qdev_init(dev); call after the setting of d->size.

F.