Re: [Qemu-devel] [PATCH v4 4/7] Enable fw_cfg DMA interface for ARM

[Laszlo Ersek <lersek@redhat.com>]

On 10/01/15 14:16, Marc Marí wrote:
> Enable the fw_cfg DMA interface for the ARM virt machine.
> 
> Based on Gerd Hoffman's initial implementation.
> 
> Signed-off-by: Marc Marí <markmb@redhat.com>
> Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
> ---
>  hw/arm/virt.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/hw/arm/virt.c b/hw/arm/virt.c
> index 7ae984f..0a39087 100644
> --- a/hw/arm/virt.c
> +++ b/hw/arm/virt.c
> @@ -119,7 +119,7 @@ static const MemMapEntry a15memmap[] = {
>      [VIRT_GIC_REDIST] =         { 0x080A0000, 0x00F60000 },
>      [VIRT_UART] =               { 0x09000000, 0x00001000 },
>      [VIRT_RTC] =                { 0x09010000, 0x00001000 },
> -    [VIRT_FW_CFG] =             { 0x09020000, 0x0000000a },
> +    [VIRT_FW_CFG] =             { 0x09020000, 0x00000018 },
>      [VIRT_MMIO] =               { 0x0a000000, 0x00000200 },
>      /* ...repeating for a total of NUM_VIRTIO_TRANSPORTS, each of that size */
>      [VIRT_PLATFORM_BUS] =       { 0x0c000000, 0x02000000 },
> @@ -677,13 +677,13 @@ static void create_flash(const VirtBoardInfo *vbi)
>      g_free(nodename);
>  }
>  
> -static void create_fw_cfg(const VirtBoardInfo *vbi)
> +static void create_fw_cfg(const VirtBoardInfo *vbi, AddressSpace *as)
>  {
>      hwaddr base = vbi->memmap[VIRT_FW_CFG].base;
>      hwaddr size = vbi->memmap[VIRT_FW_CFG].size;
>      char *nodename;
>  
> -    fw_cfg_init_mem_wide(base + 8, base, 8, 0, NULL);
> +    fw_cfg_init_mem_wide(base + 8, base, 8, base + 16, as);
>  
>      nodename = g_strdup_printf("/fw-cfg@%" PRIx64, base);
>      qemu_fdt_add_subnode(vbi->fdt, nodename);
> @@ -1026,7 +1026,7 @@ static void machvirt_init(MachineState *machine)
>       */
>      create_virtio_devices(vbi, pic);
>  
> -    create_fw_cfg(vbi);
> +    create_fw_cfg(vbi, &address_space_memory);
>      rom_set_fw(fw_cfg_find());
>  
>      guest_info->smp_cpus = smp_cpus;
> 

Reviewed-by: Laszlo Ersek <lersek@redhat.com>