Re: [Qemu-devel] [PATCH v3 5/6] hw/arm/virt: new add_fdt_*_node functions

[Paolo Bonzini <pbonzini@redhat.com>]

Il 09/09/2014 09:54, Eric Auger ha scritto:
> Create new functions:
> - add_fdt_uart_node
> - add_fdt_rtc_node
> - add_fdt_virtio_nodes

Actually they are fdt_add_uart_node etc.

> They will be used for dynamic sysbus instantiation.
> 
> Signed-off-by: Eric Auger <eric.auger@linaro.org>
> 
> ---
> 
> v2 -> v3:
> reword title to avoid content violation
> ---
>  hw/arm/virt.c | 67 +++++++++++++++++++++++++++++++++++++++--------------------
>  1 file changed, 44 insertions(+), 23 deletions(-)
> 
> diff --git a/hw/arm/virt.c b/hw/arm/virt.c
> index d6fffc7..9085b88 100644
> --- a/hw/arm/virt.c
> +++ b/hw/arm/virt.c
> @@ -351,18 +351,15 @@ static void create_gic(const VirtBoardInfo *vbi, qemu_irq *pic)
>      fdt_add_gic_node(vbi);
>  }
>  
> -static void create_uart(const VirtBoardInfo *vbi, qemu_irq *pic)
> +static void fdt_add_uart_node(const VirtBoardInfo *vbi)
>  {
> -    char *nodename;
>      hwaddr base = vbi->memmap[VIRT_UART].base;
>      hwaddr size = vbi->memmap[VIRT_UART].size;
>      int irq = vbi->irqmap[VIRT_UART];
>      const char compat[] = "arm,pl011\0arm,primecell";
>      const char clocknames[] = "uartclk\0apb_pclk";
> +    char *nodename = g_strdup_printf("/pl011@%" PRIx64, base);
>  
> -    sysbus_create_simple("pl011", base, pic[irq]);
> -
> -    nodename = g_strdup_printf("/pl011@%" PRIx64, base);
>      qemu_fdt_add_subnode(vbi->fdt, nodename);
>      /* Note that we can't use setprop_string because of the embedded NUL */
>      qemu_fdt_setprop(vbi->fdt, nodename, "compatible",
> @@ -379,17 +376,23 @@ static void create_uart(const VirtBoardInfo *vbi, qemu_irq *pic)
>      g_free(nodename);
>  }
>  
> -static void create_rtc(const VirtBoardInfo *vbi, qemu_irq *pic)
> +static void create_uart(const VirtBoardInfo *vbi, qemu_irq *pic)
> +{
> +    hwaddr base = vbi->memmap[VIRT_UART].base;
> +    int irq = vbi->irqmap[VIRT_UART];
> +
> +    sysbus_create_simple("pl011", base, pic[irq]);
> +    fdt_add_uart_node(vbi);
> +}
> +
> +static void fdt_add_rtc_node(const VirtBoardInfo *vbi)
>  {
> -    char *nodename;
>      hwaddr base = vbi->memmap[VIRT_RTC].base;
>      hwaddr size = vbi->memmap[VIRT_RTC].size;
>      int irq = vbi->irqmap[VIRT_RTC];
>      const char compat[] = "arm,pl031\0arm,primecell";
> +    char *nodename = g_strdup_printf("/pl031@%" PRIx64, base);
>  
> -    sysbus_create_simple("pl031", base, pic[irq]);
> -
> -    nodename = g_strdup_printf("/pl031@%" PRIx64, base);
>      qemu_fdt_add_subnode(vbi->fdt, nodename);
>      qemu_fdt_setprop(vbi->fdt, nodename, "compatible", compat, sizeof(compat));
>      qemu_fdt_setprop_sized_cells(vbi->fdt, nodename, "reg",
> @@ -402,22 +405,20 @@ static void create_rtc(const VirtBoardInfo *vbi, qemu_irq *pic)
>      g_free(nodename);
>  }
>  
> -static void create_virtio_devices(const VirtBoardInfo *vbi, qemu_irq *pic)
> +static void create_rtc(const VirtBoardInfo *vbi, qemu_irq *pic)
>  {
> -    int i;
> -    hwaddr size = vbi->memmap[VIRT_MMIO].size;
> +    hwaddr base = vbi->memmap[VIRT_RTC].base;
> +    int irq = vbi->irqmap[VIRT_RTC];
>  
> -    /* Note that we have to create the transports in forwards order
> -     * so that command line devices are inserted lowest address first,
> -     * and then add dtb nodes in reverse order so that they appear in
> -     * the finished device tree lowest address first.
> -     */
> -    for (i = 0; i < NUM_VIRTIO_TRANSPORTS; i++) {
> -        int irq = vbi->irqmap[VIRT_MMIO] + i;
> -        hwaddr base = vbi->memmap[VIRT_MMIO].base + i * size;
> +    sysbus_create_simple("pl031", base, pic[irq]);
>  
> -        sysbus_create_simple("virtio-mmio", base, pic[irq]);
> -    }
> +    fdt_add_rtc_node(vbi);
> +}
> +
> +static void fdt_add_virtio_nodes(const VirtBoardInfo *vbi)
> +{
> +    int i;
> +    hwaddr size = vbi->memmap[VIRT_MMIO].size;
>  
>      for (i = NUM_VIRTIO_TRANSPORTS - 1; i >= 0; i--) {
>          char *nodename;
> @@ -437,6 +438,26 @@ static void create_virtio_devices(const VirtBoardInfo *vbi, qemu_irq *pic)
>      }
>  }
>  
> +static void create_virtio_devices(const VirtBoardInfo *vbi, qemu_irq *pic)
> +{
> +    int i;
> +    hwaddr size = vbi->memmap[VIRT_MMIO].size;
> +
> +    /* Note that we have to create the transports in forwards order
> +     * so that command line devices are inserted lowest address first,
> +     * and then add dtb nodes in reverse order so that they appear in
> +     * the finished device tree lowest address first.
> +     */
> +    for (i = 0; i < NUM_VIRTIO_TRANSPORTS; i++) {
> +        int irq = vbi->irqmap[VIRT_MMIO] + i;
> +        hwaddr base = vbi->memmap[VIRT_MMIO].base + i * size;
> +
> +        sysbus_create_simple("virtio-mmio", base, pic[irq]);
> +    }
> +
> +    fdt_add_virtio_nodes(vbi);
> +}
> +
>  static void *machvirt_dtb(const struct arm_boot_info *binfo, int *fdt_size)
>  {
>      const VirtBoardInfo *board = (const VirtBoardInfo *)binfo;
>