[Qemu-devel] Re: [PATCH 11/23] pci: typedef pcibus_t as uint64_t instead of uint32_t.

[Michael S. Tsirkin]

On Mon, Oct 05, 2009 at 07:06:51PM +0900, Isaku Yamahata wrote:
> This patch is preliminary for 64bit bar.
> For 64bit bar support, change pcibus_t which represents
> pci bus addr/size from uint32_t to uint64_t.
> And also change FMT_pcibus for printf.
> 
> Signed-off-by: Isaku Yamahata <address@hidden>
> ---
>  hw/pci.c |    6 +++++-
>  hw/pci.h |    4 ++--
>  2 files changed, 7 insertions(+), 3 deletions(-)
> 
> diff --git a/hw/pci.c b/hw/pci.c
> index 8d6e8ea..21565f5 100644
> --- a/hw/pci.c
> +++ b/hw/pci.c
> @@ -473,7 +473,11 @@ static void pci_update_mappings(PCIDevice *d)
>                         mappings, we handle specific values as invalid
>                         mappings. */
>                      if (last_addr <= new_addr || new_addr == 0 ||
> -                        last_addr == PCI_BAR_UNMAPPED) {
> +                        last_addr == PCI_BAR_UNMAPPED ||
> +
> +                        /* keep old behaviour
> +                         * without this, PC ide doesn't work well. */
> +                        last_addr >= UINT32_MAX) {
>                          new_addr = PCI_BAR_UNMAPPED;
>                      }
>                  } else {

This change does not seem to be related to either pcibus_t or
FMT_PCIBUS.

> diff --git a/hw/pci.h b/hw/pci.h
> index 359fce1..cbf80c0 100644
> --- a/hw/pci.h
> +++ b/hw/pci.h
> @@ -71,8 +71,8 @@ extern target_phys_addr_t pci_mem_base;
>  #define PCI_DEVICE_ID_VIRTIO_BALLOON     0x1002
>  #define PCI_DEVICE_ID_VIRTIO_CONSOLE     0x1003
>  
> -typedef uint32_t pcibus_t;
> -#define FMT_PCIBUS                      PRIx32
> +typedef uint64_t pcibus_t;
> +#define FMT_PCIBUS                      PRIx64
>  
>  typedef void PCIConfigWriteFunc(PCIDevice *pci_dev,
>                                  uint32_t address, uint32_t data, int len);
> -- 
> 1.6.0.2