Re: [Qemu-devel] [PATCH v2] net: rtl8139: do not use old_mmio accesses

[Jason Wang <jasowang@redhat.com>]

On 2017年08月16日 04:06, Matt Parker wrote:
> Both io and memory use the same mmio functions in the rtl8139 device.
> This patch removes the separate MemoryRegionOps and old_mmio accessors
> for memory, and replaces it with an alias to the io memory region.
>
> Signed-off-by: Matt Parker <mtparkr@gmail.com>
> ---
>   hw/net/rtl8139.c | 53 +++--------------------------------------------------
>   1 file changed, 3 insertions(+), 50 deletions(-)
>
> diff --git a/hw/net/rtl8139.c b/hw/net/rtl8139.c
> index 671c7e48c6..3be24bbee7 100644
> --- a/hw/net/rtl8139.c
> +++ b/hw/net/rtl8139.c
> @@ -3132,38 +3132,6 @@ static uint32_t rtl8139_io_readl(void *opaque, uint8_t addr)
>   
>   /* */
>   
> -static void rtl8139_mmio_writeb(void *opaque, hwaddr addr, uint32_t val)
> -{
> -    rtl8139_io_writeb(opaque, addr & 0xFF, val);
> -}
> -
> -static void rtl8139_mmio_writew(void *opaque, hwaddr addr, uint32_t val)
> -{
> -    rtl8139_io_writew(opaque, addr & 0xFF, val);
> -}
> -
> -static void rtl8139_mmio_writel(void *opaque, hwaddr addr, uint32_t val)
> -{
> -    rtl8139_io_writel(opaque, addr & 0xFF, val);
> -}
> -
> -static uint32_t rtl8139_mmio_readb(void *opaque, hwaddr addr)
> -{
> -    return rtl8139_io_readb(opaque, addr & 0xFF);
> -}
> -
> -static uint32_t rtl8139_mmio_readw(void *opaque, hwaddr addr)
> -{
> -    uint32_t val = rtl8139_io_readw(opaque, addr & 0xFF);
> -    return val;
> -}
> -
> -static uint32_t rtl8139_mmio_readl(void *opaque, hwaddr addr)
> -{
> -    uint32_t val = rtl8139_io_readl(opaque, addr & 0xFF);
> -    return val;
> -}
> -
>   static int rtl8139_post_load(void *opaque, int version_id)
>   {
>       RTL8139State* s = opaque;
> @@ -3344,22 +3312,6 @@ static const MemoryRegionOps rtl8139_io_ops = {
>       .endianness = DEVICE_LITTLE_ENDIAN,
>   };
>   
> -static const MemoryRegionOps rtl8139_mmio_ops = {
> -    .old_mmio = {
> -        .read = {
> -            rtl8139_mmio_readb,
> -            rtl8139_mmio_readw,
> -            rtl8139_mmio_readl,
> -        },
> -        .write = {
> -            rtl8139_mmio_writeb,
> -            rtl8139_mmio_writew,
> -            rtl8139_mmio_writel,
> -        },
> -    },
> -    .endianness = DEVICE_LITTLE_ENDIAN,
> -};
> -
>   static void rtl8139_timer(void *opaque)
>   {
>       RTL8139State *s = opaque;
> @@ -3422,8 +3374,9 @@ static void pci_rtl8139_realize(PCIDevice *dev, Error **errp)
>   
>       memory_region_init_io(&s->bar_io, OBJECT(s), &rtl8139_io_ops, s,
>                             "rtl8139", 0x100);
> -    memory_region_init_io(&s->bar_mem, OBJECT(s), &rtl8139_mmio_ops, s,
> -                          "rtl8139", 0x100);
> +    memory_region_init_alias(&s->bar_mem, OBJECT(s), "rtl8139-mem", &s->bar_io,
> +                             0, 0x100);
> +
>       pci_register_bar(dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &s->bar_io);
>       pci_register_bar(dev, 1, PCI_BASE_ADDRESS_SPACE_MEMORY, &s->bar_mem);
>   

Applied.

Thanks