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[Qemu-devel] Re: [PATCH 1/4] PCI: define PCIBUS_MAX_DEVICES and PCI_FUNC
From: |
Michael S. Tsirkin |
Subject: |
[Qemu-devel] Re: [PATCH 1/4] PCI: define PCIBUS_MAX_DEVICES and PCI_FUNCTIONS_PER_DEVICE in pci.h |
Date: |
Tue, 7 Sep 2010 20:16:33 +0300 |
User-agent: |
Mutt/1.5.20 (2009-12-10) |
On Tue, Aug 24, 2010 at 09:25:26PM +0800, Ken CC wrote:
> And update the max function number used in struct PCIBus{} to
> PCIBUS_MAX_FUNCTIONS = PCI_FUNCTIONS_PER_DEVICE * PCIBUS_MAX_DEVICES
>
> TODO:
> according to Avi Kivity, PCIBus.devices[] should be renamed to functions[]
>
> Signed-off-by: Ken CC <address@hidden>
> ---
> hw/pci.c | 2 +-
> hw/pci.h | 2 ++
> 2 files changed, 3 insertions(+), 1 deletions(-)
>
> diff --git a/hw/pci.c b/hw/pci.c
> index 70dbace..9234fe3 100644
> --- a/hw/pci.c
> +++ b/hw/pci.c
> @@ -47,7 +47,7 @@ struct PCIBus {
> pci_hotplug_fn hotplug;
> DeviceState *hotplug_qdev;
> void *irq_opaque;
> - PCIDevice *devices[256];
> + PCIDevice *devices[PCIBUS_MAX_DEVICES * PCI_FUNCTIONS_PER_DEVICE];
> PCIDevice *parent_dev;
> target_phys_addr_t mem_base;
>
> diff --git a/hw/pci.h b/hw/pci.h
> index ccb99d0..eb97b76 100644
> --- a/hw/pci.h
> +++ b/hw/pci.h
> @@ -17,6 +17,8 @@ struct kvm_irq_routing_entry;
> #define PCI_SLOT(devfn) (((devfn) >> 3) & 0x1f)
> #define PCI_FUNC(devfn) ((devfn) & 0x07)
> #define PCI_FUNC_MAX 8
> +#define PCI_FUNCTIONS_PER_DEVICE 8
> +#define PCIBUS_MAX_DEVICES 32
PCI_FUNCTIONS_PER_DEVICE is same as PCI_FUNC_MAX. Why do we need another
macro?
> /* Class, Vendor and Device IDs from Linux's pci_ids.h */
> #include "pci_ids.h"
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