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[Qemu-devel] Re: [PATCH 1/3] pci: replace the magic, 256, for the maximu
From: |
Michael S. Tsirkin |
Subject: |
[Qemu-devel] Re: [PATCH 1/3] pci: replace the magic, 256, for the maximum of devfn |
Date: |
Wed, 26 Jan 2011 15:37:44 +0200 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Wed, Jan 26, 2011 at 06:45:18PM +0900, Isaku Yamahata wrote:
> Introduce symbol PCI_DEVFN_MAX for the maximum of devfn
> and replace the magic, 256.
>
> Signed-off-by: Isaku Yamahata <address@hidden>
> ---
> hw/pci.h | 2 ++
> hw/pci_internals.h | 2 +-
> 2 files changed, 3 insertions(+), 1 deletions(-)
>
> diff --git a/hw/pci.h b/hw/pci.h
> index 0d2753f..ffb04e8 100644
> --- a/hw/pci.h
> +++ b/hw/pci.h
> @@ -16,7 +16,9 @@
> #define PCI_DEVFN(slot, func) ((((slot) & 0x1f) << 3) | ((func) & 0x07))
> #define PCI_SLOT(devfn) (((devfn) >> 3) & 0x1f)
> #define PCI_FUNC(devfn) ((devfn) & 0x07)
> +#define PCI_SLOT_MAX 32
> #define PCI_FUNC_MAX 8
> +#define PCI_DEVFN_MAX (PCI_SLOT_MAX * PCI_FUNC_MAX)
SLOT_MAX makes sense. I'd prefer open-coding PCI_DEVFN_MAX
if there's only one user.
>
> /* Class, Vendor and Device IDs from Linux's pci_ids.h */
> #include "pci_ids.h"
> diff --git a/hw/pci_internals.h b/hw/pci_internals.h
> index e3c93a3..f17e681 100644
> --- a/hw/pci_internals.h
> +++ b/hw/pci_internals.h
> @@ -22,7 +22,7 @@ struct PCIBus {
> pci_hotplug_fn hotplug;
> DeviceState *hotplug_qdev;
> void *irq_opaque;
> - PCIDevice *devices[256];
> + PCIDevice *devices[PCI_DEVFN_MAX];
> PCIDevice *parent_dev;
> target_phys_addr_t mem_base;
>
> --
> 1.7.1.1
- [Qemu-devel] [PATCH 0/3] pci/pcie: implement ARI enable bit correctly, Isaku Yamahata, 2011/01/26
- [Qemu-devel] [PATCH 1/3] pci: replace the magic, 256, for the maximum of devfn, Isaku Yamahata, 2011/01/26
- [Qemu-devel] Re: [PATCH 1/3] pci: replace the magic, 256, for the maximum of devfn,
Michael S. Tsirkin <=
- [Qemu-devel] [PATCH 3/3] pci/pcie: make pci_find_device() ARI aware., Isaku Yamahata, 2011/01/26
- [Qemu-devel] [PATCH 2/3] pci: use devfn for pci_find_device() instead of (slot, fn) pair, Isaku Yamahata, 2011/01/26