Re: [Qemu-devel] [PATCH] pci_register_bar: cleanup

[Paolo Bonzini <pbonzini@redhat.com>]

On 25/03/2016 07:49, Cao jin wrote:
> place relevant code tegother, make the code easier to read
> 
> Signed-off-by: Cao jin <caoj.fnst@cn.fujitsu.com>
> ---
>  hw/pci/pci.c | 16 ++++++++--------
>  1 file changed, 8 insertions(+), 8 deletions(-)
> 
> diff --git a/hw/pci/pci.c b/hw/pci/pci.c
> index e67664d..f0f41dc 100644
> --- a/hw/pci/pci.c
> +++ b/hw/pci/pci.c
> @@ -974,7 +974,7 @@ void pci_register_bar(PCIDevice *pci_dev, int region_num,
>                        uint8_t type, MemoryRegion *memory)
>  {
>      PCIIORegion *r;
> -    uint32_t addr;
> +    uint32_t addr; /* offset in pci config space */
>      uint64_t wmask;
>      pcibus_t size = memory_region_size(memory);
>  
> @@ -990,15 +990,20 @@ void pci_register_bar(PCIDevice *pci_dev, int region_num,
>      r->addr = PCI_BAR_UNMAPPED;
>      r->size = size;
>      r->type = type;
> -    r->memory = NULL;
> +    r->memory = memory;
> +    r->address_space = type & PCI_BASE_ADDRESS_SPACE_IO
> +                        ? pci_dev->bus->address_space_io
> +                        : pci_dev->bus->address_space_mem;
>  
>      wmask = ~(size - 1);
> -    addr = pci_bar(pci_dev, region_num);
>      if (region_num == PCI_ROM_SLOT) {
>          /* ROM enable bit is writable */
>          wmask |= PCI_ROM_ADDRESS_ENABLE;
>      }
> +
> +    addr = pci_bar(pci_dev, region_num);
>      pci_set_long(pci_dev->config + addr, type);
> +
>      if (!(r->type & PCI_BASE_ADDRESS_SPACE_IO) &&
>          r->type & PCI_BASE_ADDRESS_MEM_TYPE_64) {
>          pci_set_quad(pci_dev->wmask + addr, wmask);
> @@ -1007,11 +1012,6 @@ void pci_register_bar(PCIDevice *pci_dev, int region_num,
>          pci_set_long(pci_dev->wmask + addr, wmask & 0xffffffff);
>          pci_set_long(pci_dev->cmask + addr, 0xffffffff);
>      }
> -    pci_dev->io_regions[region_num].memory = memory;
> -    pci_dev->io_regions[region_num].address_space
> -        = type & PCI_BASE_ADDRESS_SPACE_IO
> -        ? pci_dev->bus->address_space_io
> -        : pci_dev->bus->address_space_mem;
>  }
>  
>  static void pci_update_vga(PCIDevice *pci_dev)
> 

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>