Re: [Qemu-devel] [PATCH] initialize unit id of IDE bus

[Markus Armbruster]

Gleb Natapov <address@hidden> writes:

> Without this patch both buses on PIIX3_IDE device have the same unit id.

Are you sure that's wrong?

As far as I can see, IDEBus member unit is the currently active unit,
set by write to port 6 (in ide_ioport_write()) and cleared on reset (in
ide_bus_reset()).

> Signed-off-by: Gleb Natapov <address@hidden>
> diff --git a/hw/ide/cmd646.c b/hw/ide/cmd646.c
> index ff80dd5..b2cbdbc 100644
> --- a/hw/ide/cmd646.c
> +++ b/hw/ide/cmd646.c
> @@ -257,8 +257,8 @@ static int pci_cmd646_ide_initfn(PCIDevice *dev)
>      pci_conf[PCI_INTERRUPT_PIN] = 0x01; // interrupt on pin 1
>  
>      irq = qemu_allocate_irqs(cmd646_set_irq, d, 2);
> -    ide_bus_new(&d->bus[0], &d->dev.qdev);
> -    ide_bus_new(&d->bus[1], &d->dev.qdev);
> +    ide_bus_new(&d->bus[0], &d->dev.qdev, 0);
> +    ide_bus_new(&d->bus[1], &d->dev.qdev, 1);
>      ide_init2(&d->bus[0], irq[0]);
>      ide_init2(&d->bus[1], irq[1]);
>  
> diff --git a/hw/ide/internal.h b/hw/ide/internal.h
> index 4165543..3da93df 100644
> --- a/hw/ide/internal.h
> +++ b/hw/ide/internal.h
> @@ -564,7 +564,7 @@ void ide_init2_with_non_qdev_drives(IDEBus *bus, 
> DriveInfo *hd0,
>  void ide_init_ioport(IDEBus *bus, int iobase, int iobase2);
>  
>  /* hw/ide/qdev.c */
> -void ide_bus_new(IDEBus *idebus, DeviceState *dev);
> +void ide_bus_new(IDEBus *idebus, DeviceState *dev, uint8_t unit);
>  IDEDevice *ide_create_drive(IDEBus *bus, int unit, DriveInfo *drive);
>  
>  #endif /* HW_IDE_INTERNAL_H */
> diff --git a/hw/ide/isa.c b/hw/ide/isa.c
> index 163ffba..907d862 100644
> --- a/hw/ide/isa.c
> +++ b/hw/ide/isa.c
> @@ -67,7 +67,7 @@ static int isa_ide_initfn(ISADevice *dev)
>  {
>      ISAIDEState *s = DO_UPCAST(ISAIDEState, dev, dev);
>  
> -    ide_bus_new(&s->bus, &s->dev.qdev);
> +    ide_bus_new(&s->bus, &s->dev.qdev, 0);
>      ide_init_ioport(&s->bus, s->iobase, s->iobase2);
>      isa_init_irq(dev, &s->irq, s->isairq);
>      isa_init_ioport_range(dev, s->iobase, 8);
> diff --git a/hw/ide/piix.c b/hw/ide/piix.c
> index 07483e8..d0b04a3 100644
> --- a/hw/ide/piix.c
> +++ b/hw/ide/piix.c
> @@ -129,8 +129,8 @@ static int pci_piix_ide_initfn(PCIIDEState *d)
>  
>      vmstate_register(&d->dev.qdev, 0, &vmstate_ide_pci, d);
>  
> -    ide_bus_new(&d->bus[0], &d->dev.qdev);
> -    ide_bus_new(&d->bus[1], &d->dev.qdev);
> +    ide_bus_new(&d->bus[0], &d->dev.qdev, 0);
> +    ide_bus_new(&d->bus[1], &d->dev.qdev, 1);
>      ide_init_ioport(&d->bus[0], 0x1f0, 0x3f6);
>      ide_init_ioport(&d->bus[1], 0x170, 0x376);
>  
> diff --git a/hw/ide/qdev.c b/hw/ide/qdev.c
> index 0808760..1705a12 100644
> --- a/hw/ide/qdev.c
> +++ b/hw/ide/qdev.c
> @@ -29,9 +29,10 @@ static struct BusInfo ide_bus_info = {
>      .size  = sizeof(IDEBus),
>  };
>  
> -void ide_bus_new(IDEBus *idebus, DeviceState *dev)
> +void ide_bus_new(IDEBus *idebus, DeviceState *dev, uint8_t unit)
>  {
>      qbus_create_inplace(&idebus->qbus, &ide_bus_info, dev, NULL);
> +    idebus->unit = unit;
>  }
>  
>  static int ide_qdev_init(DeviceState *qdev, DeviceInfo *base)
> diff --git a/hw/ide/via.c b/hw/ide/via.c
> index b2c7cad..cc48b2b 100644
> --- a/hw/ide/via.c
> +++ b/hw/ide/via.c
> @@ -158,8 +158,8 @@ static int vt82c686b_ide_initfn(PCIDevice *dev)
>  
>      vmstate_register(&dev->qdev, 0, &vmstate_ide_pci, d);
>  
> -    ide_bus_new(&d->bus[0], &d->dev.qdev);
> -    ide_bus_new(&d->bus[1], &d->dev.qdev);
> +    ide_bus_new(&d->bus[0], &d->dev.qdev, 0);
> +    ide_bus_new(&d->bus[1], &d->dev.qdev, 1);
>      ide_init2(&d->bus[0], isa_reserve_irq(14));
>      ide_init2(&d->bus[1], isa_reserve_irq(15));
>      ide_init_ioport(&d->bus[0], 0x1f0, 0x3f6);
> --
>                       Gleb.