Re: [Qemu-devel] [PATCH 23/23] usb-ohci: convert to MemoryRegion

[Anthony Liguori <anthony@codemonkey.ws>]

On 07/25/2011 09:03 AM, Avi Kivity wrote:
> Signed-off-by: Avi Kivity<avi@redhat.com>

Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>

Regards,

Anthony Liguori

> ---
>   hw/usb-ohci.c |   42 +++++++++++++++++-------------------------
>   1 files changed, 17 insertions(+), 25 deletions(-)
>
> diff --git a/hw/usb-ohci.c b/hw/usb-ohci.c
> index 8491d59..337b250 100644
> --- a/hw/usb-ohci.c
> +++ b/hw/usb-ohci.c
> @@ -62,7 +62,7 @@ typedef struct OHCIPort {
>   typedef struct {
>       USBBus bus;
>       qemu_irq irq;
> -    int mem;
> +    MemoryRegion mem;
>       int num_ports;
>       const char *name;
>
> @@ -1440,13 +1440,13 @@ static void ohci_port_set_status(OHCIState *ohci, int portnum, uint32_t val)
>       return;
>   }
>
> -static uint32_t ohci_mem_read(void *ptr, target_phys_addr_t addr)
> +static uint64_t ohci_mem_read(void *opaque,
> +                              target_phys_addr_t addr,
> +                              unsigned size)
>   {
> -    OHCIState *ohci = ptr;
> +    OHCIState *ohci = opaque;
>       uint32_t retval;
>
> -    addr&= 0xff;
> -
>       /* Only aligned reads are allowed on OHCI */
>       if (addr&  3) {
>           fprintf(stderr, "usb-ohci: Mis-aligned read\n");
> @@ -1563,11 +1563,12 @@ static uint32_t ohci_mem_read(void *ptr, target_phys_addr_t addr)
>       return retval;
>   }
>
> -static void ohci_mem_write(void *ptr, target_phys_addr_t addr, uint32_t val)
> +static void ohci_mem_write(void *opaque,
> +                           target_phys_addr_t addr,
> +                           uint64_t val,
> +                           unsigned size)
>   {
> -    OHCIState *ohci = ptr;
> -
> -    addr&= 0xff;
> +    OHCIState *ohci = opaque;
>
>       /* Only aligned reads are allowed on OHCI */
>       if (addr&  3) {
> @@ -1697,18 +1698,10 @@ static void ohci_async_cancel_device(OHCIState *ohci, USBDevice *dev)
>       }
>   }
>
> -/* Only dword reads are defined on OHCI register space */
> -static CPUReadMemoryFunc * const ohci_readfn[3]={
> -    ohci_mem_read,
> -    ohci_mem_read,
> -    ohci_mem_read
> -};
> -
> -/* Only dword writes are defined on OHCI register space */
> -static CPUWriteMemoryFunc * const ohci_writefn[3]={
> -    ohci_mem_write,
> -    ohci_mem_write,
> -    ohci_mem_write
> +static const MemoryRegionOps ohci_mem_ops = {
> +    .read = ohci_mem_read,
> +    .write = ohci_mem_write,
> +    .endianness = DEVICE_LITTLE_ENDIAN,
>   };
>
>   static USBPortOps ohci_port_ops = {
> @@ -1764,8 +1757,7 @@ static int usb_ohci_init(OHCIState *ohci, DeviceState *dev,
>           }
>       }
>
> -    ohci->mem = cpu_register_io_memory(ohci_readfn, ohci_writefn, ohci,
> -                                       DEVICE_LITTLE_ENDIAN);
> +    memory_region_init_io(&ohci->mem,&ohci_mem_ops, ohci, "ohci", 256);
>       ohci->localmem_base = localmem_base;
>
>       ohci->name = dev->info->name;
> @@ -1799,7 +1791,7 @@ static int usb_ohci_initfn_pci(struct PCIDevice *dev)
>       ohci->state.irq = ohci->pci_dev.irq[0];
>
>       /* TODO: avoid cast below by using dev */
> -    pci_register_bar_simple(&ohci->pci_dev, 0, 256, 0, ohci->state.mem);
> +    pci_register_bar_region(&ohci->pci_dev, 0, 0,&ohci->state.mem);
>       return 0;
>   }
>
> @@ -1822,7 +1814,7 @@ static int ohci_init_pxa(SysBusDevice *dev)
>       /* Cannot fail as we pass NULL for masterbus */
>       usb_ohci_init(&s->ohci,&dev->qdev, s->num_ports, s->dma_offset, NULL, 0);
>       sysbus_init_irq(dev,&s->ohci.irq);
> -    sysbus_init_mmio(dev, 0x1000, s->ohci.mem);
> +    sysbus_init_mmio_region(dev,&s->ohci.mem);
>
>       return 0;
>   }