Re: [Xen-devel] [PATCH V13 4/9] pci.c: Add opaque argument to pci_for_each_device.

["Michael S. Tsirkin" <mst@xxxxxxxxxx>]

On Thu, Jun 14, 2012 at 06:01:44PM +0100, Anthony PERARD wrote:
> The purpose is to have a more generic pci_for_each_device by passing an extra
> argument to the function called on every device.
> 
> This patch will be used in a next patch.
> 
> Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
> Acked-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>

Acked-by: Michael S. Tsirkin <mst@xxxxxxxxxx>

> ---
>  hw/pci.c          |   11 +++++++----
>  hw/pci.h          |    4 +++-
>  hw/xen_platform.c |    8 ++++----
>  3 files changed, 14 insertions(+), 9 deletions(-)
> 
> diff --git a/hw/pci.c b/hw/pci.c
> index 127b7ac..d6537e3 100644
> --- a/hw/pci.c
> +++ b/hw/pci.c
> @@ -1127,7 +1127,9 @@ static const pci_class_desc pci_class_descriptions[] =
>  };
>  
>  static void pci_for_each_device_under_bus(PCIBus *bus,
> -                                          void (*fn)(PCIBus *b, PCIDevice 
> *d))
> +                                          void (*fn)(PCIBus *b, PCIDevice *d,
> +                                                     void *opaque),
> +                                          void *opaque)
>  {
>      PCIDevice *d;
>      int devfn;
> @@ -1135,18 +1137,19 @@ static void pci_for_each_device_under_bus(PCIBus *bus,
>      for(devfn = 0; devfn < ARRAY_SIZE(bus->devices); devfn++) {
>          d = bus->devices[devfn];
>          if (d) {
> -            fn(bus, d);
> +            fn(bus, d, opaque);
>          }
>      }
>  }
>  
>  void pci_for_each_device(PCIBus *bus, int bus_num,
> -                         void (*fn)(PCIBus *b, PCIDevice *d))
> +                         void (*fn)(PCIBus *b, PCIDevice *d, void *opaque),
> +                         void *opaque)
>  {
>      bus = pci_find_bus_nr(bus, bus_num);
>  
>      if (bus) {
> -        pci_for_each_device_under_bus(bus, fn);
> +        pci_for_each_device_under_bus(bus, fn, opaque);
>      }
>  }
>  
> diff --git a/hw/pci.h b/hw/pci.h
> index 7f223c0..95b608c 100644
> --- a/hw/pci.h
> +++ b/hw/pci.h
> @@ -312,7 +312,9 @@ PCIDevice *pci_nic_init(NICInfo *nd, const char 
> *default_model,
>  PCIDevice *pci_nic_init_nofail(NICInfo *nd, const char *default_model,
>                                 const char *default_devaddr);
>  int pci_bus_num(PCIBus *s);
> -void pci_for_each_device(PCIBus *bus, int bus_num, void (*fn)(PCIBus *bus, 
> PCIDevice *d));
> +void pci_for_each_device(PCIBus *bus, int bus_num,
> +                         void (*fn)(PCIBus *bus, PCIDevice *d, void *opaque),
> +                         void *opaque);
>  PCIBus *pci_find_root_bus(int domain);
>  int pci_find_domain(const PCIBus *bus);
>  PCIDevice *pci_find_device(PCIBus *bus, int bus_num, uint8_t devfn);
> diff --git a/hw/xen_platform.c b/hw/xen_platform.c
> index 0214f37..c1fe984 100644
> --- a/hw/xen_platform.c
> +++ b/hw/xen_platform.c
> @@ -83,7 +83,7 @@ static void log_writeb(PCIXenPlatformState *s, char val)
>  #define UNPLUG_ALL_NICS 2
>  #define UNPLUG_AUX_IDE_DISKS 4
>  
> -static void unplug_nic(PCIBus *b, PCIDevice *d)
> +static void unplug_nic(PCIBus *b, PCIDevice *d, void *o)
>  {
>      if (pci_get_word(d->config + PCI_CLASS_DEVICE) ==
>              PCI_CLASS_NETWORK_ETHERNET) {
> @@ -96,10 +96,10 @@ static void unplug_nic(PCIBus *b, PCIDevice *d)
>  
>  static void pci_unplug_nics(PCIBus *bus)
>  {
> -    pci_for_each_device(bus, 0, unplug_nic);
> +    pci_for_each_device(bus, 0, unplug_nic, NULL);
>  }
>  
> -static void unplug_disks(PCIBus *b, PCIDevice *d)
> +static void unplug_disks(PCIBus *b, PCIDevice *d, void *o)
>  {
>      if (pci_get_word(d->config + PCI_CLASS_DEVICE) ==
>              PCI_CLASS_STORAGE_IDE) {
> @@ -109,7 +109,7 @@ static void unplug_disks(PCIBus *b, PCIDevice *d)
>  
>  static void pci_unplug_disks(PCIBus *bus)
>  {
> -    pci_for_each_device(bus, 0, unplug_disks);
> +    pci_for_each_device(bus, 0, unplug_disks, NULL);
>  }
>  
>  static void platform_fixed_ioport_writew(void *opaque, uint32_t addr, 
> uint32_t val)
> -- 
> Anthony PERARD

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