Re: [PATCH 08/21] hw/dma/zynq-devcfg: Fix register memory

[Edgar E. Iglesias]

On Tue, Mar 18, 2025 at 02:07:59PM +0100, Corvin Köhne wrote:
> From: YannickV <y.vos...@beckhoff.com>
> 
> Registers are always 32 bit aligned. R_MAX is not the maximum
> register address, it is the maximum register number. The memory
> size can be determined by 4 * R_MAX.
> 
> Currently every register with an offset bigger than 0x40 will be
> ignored, because the memory size is set wrong. This effects the
> MCTRL register and makes it useless. This commit restores the
> correct behaviour.
> 
> Signed-off-by: Yannick Voßen <y.vos...@beckhoff.com>

Reviewed-by: Edgar E. Iglesias <edgar.igles...@amd.com>


> ---
>  hw/dma/xlnx-zynq-devcfg.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/hw/dma/xlnx-zynq-devcfg.c b/hw/dma/xlnx-zynq-devcfg.c
> index c595d090fa..24461677ef 100644
> --- a/hw/dma/xlnx-zynq-devcfg.c
> +++ b/hw/dma/xlnx-zynq-devcfg.c
> @@ -400,7 +400,7 @@ static void xlnx_zynq_devcfg_init(Object *obj)
>                                s->regs_info, s->regs,
>                                &xlnx_zynq_devcfg_reg_ops,
>                                XLNX_ZYNQ_DEVCFG_ERR_DEBUG,
> -                              XLNX_ZYNQ_DEVCFG_R_MAX);
> +                              XLNX_ZYNQ_DEVCFG_R_MAX * 4);
>      memory_region_add_subregion(&s->iomem,
>                                  A_CTRL,
>                                  &reg_array->mem);
> -- 
> 2.49.0
>