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Re: [Qemu-devel] [V15 1/4] hw/pci: Prepare for AMD IOMMU
From: |
Peter Xu |
Subject: |
Re: [Qemu-devel] [V15 1/4] hw/pci: Prepare for AMD IOMMU |
Date: |
Mon, 8 Aug 2016 17:01:11 +0800 |
User-agent: |
Mutt/1.5.24 (2015-08-30) |
On Tue, Aug 02, 2016 at 11:39:04AM +0300, David Kiarie wrote:
> Introduce PCI macros from for use by AMD IOMMU
>
> Signed-off-by: David Kiarie <address@hidden>
> ---
> include/hw/pci/pci.h | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h
> index 929ec2f..d47e0e6 100644
> --- a/include/hw/pci/pci.h
> +++ b/include/hw/pci/pci.h
> @@ -11,11 +11,14 @@
> #include "hw/pci/pcie.h"
>
> /* PCI bus */
> -
> +#define PCI_BDF(bus, devfn) ((((uint16_t)(bus)) << 8) | (devfn))
Seems the same as PCI_BUILD_BDF() below?
> #define PCI_DEVFN(slot, func) ((((slot) & 0x1f) << 3) | ((func) & 0x07))
> +#define PCI_BUS_NUM(x) (((x) >> 8) & 0xff)
> #define PCI_SLOT(devfn) (((devfn) >> 3) & 0x1f)
> #define PCI_FUNC(devfn) ((devfn) & 0x07)
> #define PCI_BUILD_BDF(bus, devfn) ((bus << 8) | (devfn))
> +#define PCI_BUS_MAX 256
> +#define PCI_DEVFN_MAX 256
> #define PCI_SLOT_MAX 32
> #define PCI_FUNC_MAX 8
>
> --
> 2.1.4
>
-- peterx