Re: [Qemu-devel] [PATCH 3/3] pc_sysfw: do not make it a device anymore

[Paolo Bonzini <pbonzini@redhat.com>]

Il 03/06/2013 22:46, Jordan Justen ha scritto:
> Could you separate out the isapc_ram_fw part? It seems like a viable
> separate change, and a better way to handle that situation.

I don't think this change is useful enough without the rest.  The real
cleanup comes from differentiating BIOS vs. flash purely based on the
command line.

Paolo

> -Jordan
> 
> On Mon, Jun 3, 2013 at 8:19 AM, Paolo Bonzini <pbonzini@redhat.com> wrote:
>> Move the code to hw/i386, the sole remaining property is available
>> as !pci_enabled.
>>
>> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
>> ---
>>  default-configs/i386-softmmu.mak   |  1 -
>>  default-configs/x86_64-softmmu.mak |  1 -
>>  hw/block/Makefile.objs             |  1 -
>>  hw/i386/Makefile.objs              |  1 +
>>  hw/i386/pc.c                       |  5 ++--
>>  hw/i386/pc_piix.c                  |  7 +-----
>>  hw/i386/pc_q35.c                   |  2 +-
>>  hw/{block => i386}/pc_sysfw.c      | 51 +++-----------------------------------
>>  include/hw/i386/pc.h               |  6 +++--
>>  9 files changed, 13 insertions(+), 62 deletions(-)
>>  rename hw/{block => i386}/pc_sysfw.c (82%)
>>
>> diff --git a/default-configs/i386-softmmu.mak b/default-configs/i386-softmmu.mak
>> index 03deca2..fb84f80 100644
>> --- a/default-configs/i386-softmmu.mak
>> +++ b/default-configs/i386-softmmu.mak
>> @@ -34,7 +34,6 @@ CONFIG_PAM=y
>>  CONFIG_PCI_PIIX=y
>>  CONFIG_PCI_HOTPLUG=y
>>  CONFIG_WDT_IB700=y
>> -CONFIG_PC_SYSFW=y
>>  CONFIG_XEN_I386=$(CONFIG_XEN)
>>  CONFIG_ISA_DEBUG=y
>>  CONFIG_ISA_TESTDEV=y
>> diff --git a/default-configs/x86_64-softmmu.mak b/default-configs/x86_64-softmmu.mak
>> index 599b630..794d986 100644
>> --- a/default-configs/x86_64-softmmu.mak
>> +++ b/default-configs/x86_64-softmmu.mak
>> @@ -34,7 +34,6 @@ CONFIG_PAM=y
>>  CONFIG_PCI_PIIX=y
>>  CONFIG_PCI_HOTPLUG=y
>>  CONFIG_WDT_IB700=y
>> -CONFIG_PC_SYSFW=y
>>  CONFIG_XEN_I386=$(CONFIG_XEN)
>>  CONFIG_ISA_DEBUG=y
>>  CONFIG_ISA_TESTDEV=y
>> diff --git a/hw/block/Makefile.objs b/hw/block/Makefile.objs
>> index e4329a0..94491bf 100644
>> --- a/hw/block/Makefile.objs
>> +++ b/hw/block/Makefile.objs
>> @@ -7,7 +7,6 @@ common-obj-$(CONFIG_PFLASH_CFI02) += pflash_cfi02.o
>>  common-obj-$(CONFIG_XEN_BACKEND) += xen_disk.o
>>  common-obj-$(CONFIG_ECC) += ecc.o
>>  common-obj-$(CONFIG_ONENAND) += onenand.o
>> -common-obj-$(CONFIG_PC_SYSFW) += pc_sysfw.o
>>
>>  obj-$(CONFIG_SH4) += tc58128.o
>>
>> diff --git a/hw/i386/Makefile.objs b/hw/i386/Makefile.objs
>> index 205d22e..45e6165 100644
>> --- a/hw/i386/Makefile.objs
>> +++ b/hw/i386/Makefile.objs
>> @@ -1,6 +1,7 @@
>>  obj-$(CONFIG_KVM) += kvm/
>>  obj-y += multiboot.o smbios.o
>>  obj-y += pc.o pc_piix.o pc_q35.o
>> +obj-y += pc_sysfw.o
>>  obj-$(CONFIG_XEN) += xen_domainbuild.o xen_machine_pv.o
>>
>>  obj-y += kvmvapic.o
>> diff --git a/hw/i386/pc.c b/hw/i386/pc.c
>> index 197d218..db5bc26 100644
>> --- a/hw/i386/pc.c
>> +++ b/hw/i386/pc.c
>> @@ -1019,7 +1019,8 @@ void *pc_memory_init(MemoryRegion *system_memory,
>>                      ram_addr_t below_4g_mem_size,
>>                      ram_addr_t above_4g_mem_size,
>>                      MemoryRegion *rom_memory,
>> -                    MemoryRegion **ram_memory)
>> +                    MemoryRegion **ram_memory,
>> +                    bool isapc_ram_fw)
>>  {
>>      int linux_boot, i;
>>      MemoryRegion *ram, *option_rom_mr;
>> @@ -1051,7 +1052,7 @@ void *pc_memory_init(MemoryRegion *system_memory,
>>
>>
>>      /* Initialize PC system firmware */
>> -    pc_system_firmware_init(rom_memory);
>> +    pc_system_firmware_init(rom_memory, isapc_ram_fw);
>>
>>      option_rom_mr = g_malloc(sizeof(*option_rom_mr));
>>      memory_region_init_ram(option_rom_mr, "pc.rom", PC_ROM_SIZE);
>> diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
>> index 00a729a..4bf5adf 100644
>> --- a/hw/i386/pc_piix.c
>> +++ b/hw/i386/pc_piix.c
>> @@ -124,7 +124,7 @@ static void pc_init1(MemoryRegion *system_memory,
>>          fw_cfg = pc_memory_init(system_memory,
>>                         kernel_filename, kernel_cmdline, initrd_filename,
>>                         below_4g_mem_size, above_4g_mem_size,
>> -                       rom_memory, &ram_memory);
>> +                       rom_memory, &ram_memory, !pci_enabled);
>>      }
>>
>>      gsi_state = g_malloc0(sizeof(*gsi_state));
>> @@ -704,11 +704,6 @@ static QEMUMachine isapc_machine = {
>>      .init = pc_init_isa,
>>      .max_cpus = 1,
>>      .compat_props = (GlobalProperty[]) {
>> -        {
>> -            .driver   = "pc-sysfw",
>> -            .property = "isapc_ram_fw",
>> -            .value    = stringify(1),
>> -        },
>>          { /* end of list */ }
>>      },
>>      DEFAULT_MACHINE_OPTIONS,
>> diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
>> index 7888dfe..eb7bf30 100644
>> --- a/hw/i386/pc_q35.c
>> +++ b/hw/i386/pc_q35.c
>> @@ -109,7 +109,7 @@ static void pc_q35_init(QEMUMachineInitArgs *args)
>>      if (!xen_enabled()) {
>>          pc_memory_init(get_system_memory(), kernel_filename, kernel_cmdline,
>>                         initrd_filename, below_4g_mem_size, above_4g_mem_size,
>> -                       rom_memory, &ram_memory);
>> +                       rom_memory, &ram_memory, false);
>>      }
>>
>>      /* irq lines */
>> diff --git a/hw/block/pc_sysfw.c b/hw/i386/pc_sysfw.c
>> similarity index 82%
>> rename from hw/block/pc_sysfw.c
>> rename to hw/i386/pc_sysfw.c
>> index 651dda8..b007be0 100644
>> --- a/hw/block/pc_sysfw.c
>> +++ b/hw/i386/pc_sysfw.c
>> @@ -165,26 +165,15 @@ static void old_pc_system_rom_init(MemoryRegion *rom_memory, bool isapc_ram_fw)
>>                                  bios);
>>  }
>>
>> -void pc_system_firmware_init(MemoryRegion *rom_memory)
>> +void pc_system_firmware_init(MemoryRegion *rom_memory, bool isapc_ram_fw)
>>  {
>>      DriveInfo *pflash_drv;
>> -    PcSysFwDevice *sysfw_dev;
>> -
>> -    /*
>> -     * TODO This device exists only so that users can switch between
>> -     * use of flash and ROM for the BIOS.  The ability to switch was
>> -     * created because flash doesn't work with KVM.  Once it does, we
>> -     * should drop this device.
>> -     */
>> -    sysfw_dev = (PcSysFwDevice*) qdev_create(NULL, "pc-sysfw");
>> -
>> -    qdev_init_nofail(DEVICE(sysfw_dev));
>>
>>      pflash_drv = drive_get(IF_PFLASH, 0, 0);
>>
>> -    if (sysfw_dev->isapc_ram_fw || pflash_drv == NULL) {
>> +    if (isapc_ram_fw || pflash_drv == NULL) {
>>          /* When a pflash drive is not found, use rom-mode */
>> -        old_pc_system_rom_init(rom_memory, sysfw_dev->isapc_ram_fw);
>> +        old_pc_system_rom_init(rom_memory, isapc_ram_fw);
>>          return;
>>      }
>>
>> @@ -197,37 +186,3 @@ void pc_system_firmware_init(MemoryRegion *rom_memory)
>>
>>      pc_system_flash_init(rom_memory, pflash_drv);
>>  }
>> -
>> -static Property pcsysfw_properties[] = {
>> -    DEFINE_PROP_UINT8("isapc_ram_fw", PcSysFwDevice, isapc_ram_fw, 0),
>> -    DEFINE_PROP_END_OF_LIST(),
>> -};
>> -
>> -static int pcsysfw_init(DeviceState *dev)
>> -{
>> -    return 0;
>> -}
>> -
>> -static void pcsysfw_class_init (ObjectClass *klass, void *data)
>> -{
>> -    DeviceClass *dc = DEVICE_CLASS (klass);
>> -
>> -    dc->desc = "PC System Firmware";
>> -    dc->init = pcsysfw_init;
>> -    dc->props = pcsysfw_properties;
>> -}
>> -
>> -static const TypeInfo pcsysfw_info = {
>> -    .name          = "pc-sysfw",
>> -    .parent        = TYPE_SYS_BUS_DEVICE,
>> -    .instance_size = sizeof (PcSysFwDevice),
>> -    .class_init    = pcsysfw_class_init,
>> -};
>> -
>> -static void pcsysfw_register (void)
>> -{
>> -    type_register_static (&pcsysfw_info);
>> -}
>> -
>> -type_init (pcsysfw_register);
>> -
>> diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
>> index 663426c..983a5b5 100644
>> --- a/include/hw/i386/pc.h
>> +++ b/include/hw/i386/pc.h
>> @@ -87,7 +87,8 @@ void *pc_memory_init(MemoryRegion *system_memory,
>>                      ram_addr_t below_4g_mem_size,
>>                      ram_addr_t above_4g_mem_size,
>>                      MemoryRegion *rom_memory,
>> -                    MemoryRegion **ram_memory);
>> +                    MemoryRegion **ram_memory,
>> +                    bool isapc_ram_fw);
>>  qemu_irq *pc_allocate_cpu_irq(void);
>>  DeviceState *pc_vga_init(ISABus *isa_bus, PCIBus *pci_bus);
>>  void pc_basic_device_init(ISABus *isa_bus, qemu_irq *gsi,
>> @@ -168,7 +169,8 @@ 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);
>> +void pc_system_firmware_init(MemoryRegion *rom_memory,
>> +                             bool isapc_ram_fw);
>>
>>  /* pvpanic.c */
>>  int pvpanic_init(ISABus *bus);
>> --
>> 1.8.1.4
>>
>>
> 
>