Re: [Qemu-devel] [PATCH v3] qemu-kvm/pci-assign: 64 bits bar emulation

[Gleb Natapov <gleb@redhat.com>]

On Thu, Dec 20, 2012 at 11:07:23AM +0800, Xudong Hao wrote:
> Enable 64 bits bar emulation.
> 
> v3 changes from v2:
> - Leave original error string and drop the leading 016.
> 
> v2 changes from v1:
> - Change 0lx% to 0x%016 when print a 64 bit variable.
> 
> Test pass with the current seabios which already support 64bit pci bars.
> 
> Signed-off-by: Xudong Hao <xudong.hao@intel.com>
Alex, is this OK with you now?

> ---
>  hw/kvm/pci-assign.c |   14 ++++++++++----
>  1 files changed, 10 insertions(+), 4 deletions(-)
> 
> diff --git a/hw/kvm/pci-assign.c b/hw/kvm/pci-assign.c
> index 7a0998c..2271a2e 100644
> --- a/hw/kvm/pci-assign.c
> +++ b/hw/kvm/pci-assign.c
> @@ -46,6 +46,7 @@
>  #define IORESOURCE_IRQ      0x00000400
>  #define IORESOURCE_DMA      0x00000800
>  #define IORESOURCE_PREFETCH 0x00002000  /* No side effects */
> +#define IORESOURCE_MEM_64   0x00100000
>  
>  //#define DEVICE_ASSIGNMENT_DEBUG
>  
> @@ -442,9 +443,13 @@ static int assigned_dev_register_regions(PCIRegion *io_regions,
>  
>          /* handle memory io regions */
>          if (cur_region->type & IORESOURCE_MEM) {
> -            int t = cur_region->type & IORESOURCE_PREFETCH
> -                ? PCI_BASE_ADDRESS_MEM_PREFETCH
> -                : PCI_BASE_ADDRESS_SPACE_MEMORY;
> +            int t = PCI_BASE_ADDRESS_SPACE_MEMORY;
> +            if (cur_region->type & IORESOURCE_PREFETCH) {
> +                t |= PCI_BASE_ADDRESS_MEM_PREFETCH;
> +            }
> +            if (cur_region->type & IORESOURCE_MEM_64) {
> +                t |= PCI_BASE_ADDRESS_MEM_TYPE_64;
> +            }
>  
>              /* map physical memory */
>              pci_dev->v_addrs[i].u.r_virtbase = mmap(NULL, cur_region->size,
> @@ -632,7 +637,8 @@ again:
>          rp->valid = 0;
>          rp->resource_fd = -1;
>          size = end - start + 1;
> -        flags &= IORESOURCE_IO | IORESOURCE_MEM | IORESOURCE_PREFETCH;
> +        flags &= IORESOURCE_IO | IORESOURCE_MEM | IORESOURCE_PREFETCH
> +                 | IORESOURCE_MEM_64;
>          if (size == 0 || (flags & ~IORESOURCE_PREFETCH) == 0) {
>              continue;
>          }
> -- 
> 1.5.5

--
			Gleb.