[v1] hw/riscv/virt: device tree reg cleanups

[PATCH 11/13] hw/riscv/virt: Use setprop_sized_cells for iommu

Posted by Joel Stanley 6 months, 2 weeks ago

The current device tree property uses two cells for the address (and for
the size), but assumes the they are less than 32 bits by hard coding the
high cell to zero.

Use qemu_fdt_setprop_sized_cells to do the job of splitting the upper
and lower 32 bits across cells.

Signed-off-by: Joel Stanley <joel@jms.id.au>
---
 hw/riscv/virt.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c
index 823ef7cbe447..f8943f81790c 100644
--- a/hw/riscv/virt.c
+++ b/hw/riscv/virt.c
@@ -1088,8 +1088,7 @@ static void create_fdt_iommu_sys(RISCVVirtState *s, uint32_t irq_chip,
     qemu_fdt_setprop_cell(fdt, iommu_node, "#iommu-cells", 1);
     qemu_fdt_setprop_cell(fdt, iommu_node, "phandle", iommu_phandle);
 
-    qemu_fdt_setprop_cells(fdt, iommu_node, "reg",
-                           addr >> 32, addr, size >> 32, size);
+    qemu_fdt_setprop_sized_cells(fdt, iommu_node, "reg", 2, addr, 2, size);
     qemu_fdt_setprop_cell(fdt, iommu_node, "interrupt-parent", irq_chip);
 
     qemu_fdt_setprop_cells(fdt, iommu_node, "interrupts",
-- 
2.47.2

Re: [PATCH 11/13] hw/riscv/virt: Use setprop_sized_cells for iommu

Posted by Daniel Henrique Barboza 6 months, 2 weeks ago


On 4/29/25 3:12 AM, Joel Stanley wrote:
> The current device tree property uses two cells for the address (and for
> the size), but assumes the they are less than 32 bits by hard coding the
> high cell to zero.
> 
> Use qemu_fdt_setprop_sized_cells to do the job of splitting the upper
> and lower 32 bits across cells.
> 
> Signed-off-by: Joel Stanley <joel@jms.id.au>
> ---

Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>

>   hw/riscv/virt.c | 3 +--
>   1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c
> index 823ef7cbe447..f8943f81790c 100644
> --- a/hw/riscv/virt.c
> +++ b/hw/riscv/virt.c
> @@ -1088,8 +1088,7 @@ static void create_fdt_iommu_sys(RISCVVirtState *s, uint32_t irq_chip,
>       qemu_fdt_setprop_cell(fdt, iommu_node, "#iommu-cells", 1);
>       qemu_fdt_setprop_cell(fdt, iommu_node, "phandle", iommu_phandle);
>   
> -    qemu_fdt_setprop_cells(fdt, iommu_node, "reg",
> -                           addr >> 32, addr, size >> 32, size);
> +    qemu_fdt_setprop_sized_cells(fdt, iommu_node, "reg", 2, addr, 2, size);
>       qemu_fdt_setprop_cell(fdt, iommu_node, "interrupt-parent", irq_chip);
>   
>       qemu_fdt_setprop_cells(fdt, iommu_node, "interrupts",