Re: [Qemu-devel] [PATCH v17 5/6] pvpanic: create pvpanic device by default

[Paolo Bonzini <pbonzini@redhat.com>]

Il 05/04/2013 08:36, Hu Tao ha scritto:
> Also parse command line options for ioport and set
> it accordingly.

This does not do the correct thing for versioned machine types like "-M
pc-1.4".  Also, adding stuff to vl.c is really something you cannot do.
 Please don't be afraid to ask!

See the attached patch, untested.  Feel free to take it with my S-o-b line.

Patches 1-4 and 6 are okay.

Paolo

> Signed-off-by: Hu Tao <hutao@cn.fujitsu.com>
> ---
>  hw/i386/pc_piix.c |  2 ++
>  hw/i386/pc_q35.c  |  1 +
>  hw/pc.h           |  4 ++++
>  hw/pvpanic.c      | 42 ++++++++++++++++++++++++++++++++++++++++++
>  vl.c              |  2 ++
>  5 files changed, 51 insertions(+)
> 
> diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
> index 0abc9f1..897254a 100644
> --- a/hw/i386/pc_piix.c
> +++ b/hw/i386/pc_piix.c
> @@ -217,6 +217,8 @@ static void pc_init1(MemoryRegion *system_memory,
>      if (pci_enabled) {
>          pc_pci_device_init(pci_bus);
>      }
> +
> +    pvpanic_init(isa_bus);
>  }
>  
>  static void pc_init_pci(QEMUMachineInitArgs *args)
> diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
> index 4f5f347..fd9ab01 100644
> --- a/hw/i386/pc_q35.c
> +++ b/hw/i386/pc_q35.c
> @@ -204,6 +204,7 @@ static void pc_q35_init(QEMUMachineInitArgs *args)
>      pc_vga_init(isa_bus, host_bus);
>      audio_init(isa_bus, host_bus);
>      pc_nic_init(isa_bus, host_bus);
> +    pvpanic_init(isa_bus);
>      if (pci_enabled) {
>          pc_pci_device_init(host_bus);
>      }
> diff --git a/hw/pc.h b/hw/pc.h
> index 8e1dd4c..1311037 100644
> --- a/hw/pc.h
> +++ b/hw/pc.h
> @@ -178,6 +178,10 @@ static inline bool isa_ne2000_init(ISABus *bus, int base, int irq, NICInfo *nd)
>  /* pc_sysfw.c */
>  void pc_system_firmware_init(MemoryRegion *rom_memory);
>  
> +/* pvpanic.c */
> +int pvpanic_init(ISABus *bus);
> +int pvpanic_ioport(QemuOpts *opts, void *opaque);
> +
>  /* e820 types */
>  #define E820_RAM        1
>  #define E820_RESERVED   2
> diff --git a/hw/pvpanic.c b/hw/pvpanic.c
> index b3d10e2..2e237a4 100644
> --- a/hw/pvpanic.c
> +++ b/hw/pvpanic.c
> @@ -19,6 +19,8 @@
>  #include <sysemu/kvm.h>
>  
>  #include "hw/fw_cfg.h"
> +#include "hw/pc.h"
> +#include "qapi/string-input-visitor.h"
>  
>  /* The bit of supported pv event */
>  #define PVPANIC_F_PANICKED      0
> @@ -57,6 +59,36 @@ typedef struct PVPanicState {
>      uint16_t ioport;
>  } PVPanicState;
>  
> +static uint16_t ioport;
> +
> +static int set_ioport(const char *name, const char *value, void *opaque)
> +{
> +    StringInputVisitor *mi;
> +
> +    if (strcmp(name, "ioport") == 0) {
> +        mi = string_input_visitor_new(value);
> +        visit_type_uint16(string_input_get_visitor(mi), &ioport, "ioport",
> +                          NULL);
> +        string_input_visitor_cleanup(mi);
> +    }
> +
> +    return 0;
> +}
> +
> +int pvpanic_ioport(QemuOpts *opts, void *opaque)
> +{
> +    const char *driver;
> +
> +    driver = qemu_opt_get(opts, "driver");
> +    if (!driver || strcmp(driver, "pvpanic")) {
> +        return 0;
> +    }
> +
> +    qemu_opt_foreach(opts, set_ioport, NULL, 0);
> +
> +    return 0;
> +}
> +
>  /* return supported events on read */
>  static uint64_t pvpanic_ioport_read(void *opaque, hwaddr addr, unsigned size)
>  {
> @@ -84,6 +116,10 @@ static int pvpanic_isa_initfn(ISADevice *dev)
>      static bool port_configured;
>      void *fw_cfg;
>  
> +    if (ioport) {
> +        s->ioport = ioport;
> +    }
> +
>      memory_region_init_io(&s->io, &pvpanic_ops, s, "pvpanic", 1);
>      isa_register_ioport(dev, &s->io, s->ioport);
>  
> @@ -115,6 +151,12 @@ static void pvpanic_isa_class_init(ObjectClass *klass, void *data)
>      dc->props = pvpanic_isa_properties;
>  }
>  
> +int pvpanic_init(ISABus *bus)
> +{
> +    isa_create_simple(bus, TYPE_ISA_PVPANIC_DEVICE);
> +    return 0;
> +}
> +
>  static TypeInfo pvpanic_isa_info = {
>      .name          = TYPE_ISA_PVPANIC_DEVICE,
>      .parent        = TYPE_ISA_DEVICE,
> diff --git a/vl.c b/vl.c
> index c91fd4e..1a3ffa2 100644
> --- a/vl.c
> +++ b/vl.c
> @@ -4302,6 +4302,8 @@ int main(int argc, char **argv, char **envp)
>              exit (i == 1 ? 1 : 0);
>      }
>  
> +    qemu_opts_foreach(qemu_find_opts("device"), pvpanic_ioport, NULL, 0);
> +
>      if (machine->compat_props) {
>          qdev_prop_register_global_list(machine->compat_props);
>      }
>