Re: [PATCH v1 1/2] hw/arm: versal: Add support for the LPD ADMAs

[Luc Michel]

On 2/27/20 4:44 PM, Edgar E. Iglesias wrote:
> From: "Edgar E. Iglesias" <address@hidden>
> 
> Add support for the Versal LPD ADMAs.
> 
> Signed-off-by: Edgar E. Iglesias <address@hidden>

Reviewed-by: Luc Michel <address@hidden>

> ---
>  hw/arm/xlnx-versal.c         | 24 ++++++++++++++++++++++++
>  include/hw/arm/xlnx-versal.h |  6 ++++++
>  2 files changed, 30 insertions(+)
> 
> diff --git a/hw/arm/xlnx-versal.c b/hw/arm/xlnx-versal.c
> index 1cf3daaf4f..f9beba07ed 100644
> --- a/hw/arm/xlnx-versal.c
> +++ b/hw/arm/xlnx-versal.c
> @@ -193,6 +193,29 @@ static void versal_create_gems(Versal *s, qemu_irq *pic)
>      }
>  }
>  
> +static void versal_create_admas(Versal *s, qemu_irq *pic)
> +{
> +    int i;
> +
> +    for (i = 0; i < ARRAY_SIZE(s->lpd.iou.adma); i++) {
> +        char *name = g_strdup_printf("adma%d", i);
> +        DeviceState *dev;
> +        MemoryRegion *mr;
> +
> +        dev = qdev_create(NULL, "xlnx.zdma");
> +        s->lpd.iou.adma[i] = SYS_BUS_DEVICE(dev);
> +        object_property_add_child(OBJECT(s), name, OBJECT(dev), 
> &error_fatal);
> +        qdev_init_nofail(dev);
> +
> +        mr = sysbus_mmio_get_region(s->lpd.iou.adma[i], 0);
> +        memory_region_add_subregion(&s->mr_ps,
> +                                    MM_ADMA_CH0 + i * MM_ADMA_CH0_SIZE, mr);
> +
> +        sysbus_connect_irq(s->lpd.iou.adma[i], 0, pic[VERSAL_ADMA_IRQ_0 + 
> i]);
> +        g_free(name);
> +    }
> +}
> +
>  /* This takes the board allocated linear DDR memory and creates aliases
>   * for each split DDR range/aperture on the Versal address map.
>   */
> @@ -274,6 +297,7 @@ static void versal_realize(DeviceState *dev, Error **errp)
>      versal_create_apu_gic(s, pic);
>      versal_create_uarts(s, pic);
>      versal_create_gems(s, pic);
> +    versal_create_admas(s, pic);
>      versal_map_ddr(s);
>      versal_unimp(s);
>  
> diff --git a/include/hw/arm/xlnx-versal.h b/include/hw/arm/xlnx-versal.h
> index d844c4ffe4..6c0a692b2f 100644
> --- a/include/hw/arm/xlnx-versal.h
> +++ b/include/hw/arm/xlnx-versal.h
> @@ -22,6 +22,7 @@
>  #define XLNX_VERSAL_NR_ACPUS   2
>  #define XLNX_VERSAL_NR_UARTS   2
>  #define XLNX_VERSAL_NR_GEMS    2
> +#define XLNX_VERSAL_NR_ADMAS   8
>  #define XLNX_VERSAL_NR_IRQS    192
>  
>  typedef struct Versal {
> @@ -50,6 +51,7 @@ typedef struct Versal {
>          struct {
>              SysBusDevice *uart[XLNX_VERSAL_NR_UARTS];
>              SysBusDevice *gem[XLNX_VERSAL_NR_GEMS];
> +            SysBusDevice *adma[XLNX_VERSAL_NR_ADMAS];
>          } iou;
>      } lpd;
>  
> @@ -74,6 +76,7 @@ typedef struct Versal {
>  #define VERSAL_GEM0_WAKE_IRQ_0     57
>  #define VERSAL_GEM1_IRQ_0          58
>  #define VERSAL_GEM1_WAKE_IRQ_0     59
> +#define VERSAL_ADMA_IRQ_0          60
>  
>  /* Architecturally reserved IRQs suitable for virtualization.  */
>  #define VERSAL_RSVD_IRQ_FIRST 111
> @@ -96,6 +99,9 @@ typedef struct Versal {
>  #define MM_GEM1                     0xff0d0000U
>  #define MM_GEM1_SIZE                0x10000
>  
> +#define MM_ADMA_CH0                 0xffa80000U
> +#define MM_ADMA_CH0_SIZE            0x10000
> +
>  #define MM_OCM                      0xfffc0000U
>  #define MM_OCM_SIZE                 0x40000
>  
>