Re: [PATCH v1 10/11] hw/arm: versal-virt: Add support for SD

[Luc Michel]

On 4/27/20 8:16 PM, Edgar E. Iglesias wrote:
> From: "Edgar E. Iglesias" <address@hidden>
> 
> Add support for SD.
> 
> Signed-off-by: Edgar E. Iglesias <address@hidden>

Reviewed-by: Luc Michel <address@hidden>

> ---
>  hw/arm/xlnx-versal-virt.c | 46 +++++++++++++++++++++++++++++++++++++++
>  1 file changed, 46 insertions(+)
> 
> diff --git a/hw/arm/xlnx-versal-virt.c b/hw/arm/xlnx-versal-virt.c
> index d7be1ad494..0afee48672 100644
> --- a/hw/arm/xlnx-versal-virt.c
> +++ b/hw/arm/xlnx-versal-virt.c
> @@ -20,6 +20,7 @@
>  #include "hw/arm/sysbus-fdt.h"
>  #include "hw/arm/fdt.h"
>  #include "cpu.h"
> +#include "hw/qdev-properties.h"
>  #include "hw/arm/xlnx-versal.h"
>  
>  #define TYPE_XLNX_VERSAL_VIRT_MACHINE MACHINE_TYPE_NAME("xlnx-versal-virt")
> @@ -256,6 +257,32 @@ static void fdt_add_zdma_nodes(VersalVirt *s)
>      }
>  }
>  
> +static void fdt_add_sd_nodes(VersalVirt *s)
> +{
> +    const char clocknames[] = "clk_xin\0clk_ahb";
> +    const char compat[] = "arasan,sdhci-8.9a";
> +    int i;
> +
> +    for (i = ARRAY_SIZE(s->soc.pmc.iou.sd) - 1; i >= 0; i--) {
> +        uint64_t addr = MM_PMC_SD0 + MM_PMC_SD0_SIZE * i;
> +        char *name = g_strdup_printf("/sdhci@%" PRIx64, addr);
> +
> +        qemu_fdt_add_subnode(s->fdt, name);
> +
> +        qemu_fdt_setprop_cells(s->fdt, name, "clocks",
> +                               s->phandle.clk_25Mhz, s->phandle.clk_25Mhz);
> +        qemu_fdt_setprop(s->fdt, name, "clock-names",
> +                         clocknames, sizeof(clocknames));
> +        qemu_fdt_setprop_cells(s->fdt, name, "interrupts",
> +                               GIC_FDT_IRQ_TYPE_SPI, VERSAL_SD0_IRQ_0 + i * 
> 2,
> +                               GIC_FDT_IRQ_FLAGS_LEVEL_HI);
> +        qemu_fdt_setprop_sized_cells(s->fdt, name, "reg",
> +                                     2, addr, 2, MM_PMC_SD0_SIZE);
> +        qemu_fdt_setprop(s->fdt, name, "compatible", compat, sizeof(compat));
> +        g_free(name);
> +    }
> +}
> +
>  static void fdt_nop_memory_nodes(void *fdt, Error **errp)
>  {
>      Error *err = NULL;
> @@ -411,10 +438,23 @@ static void create_virtio_regions(VersalVirt *s)
>      }
>  }
>  
> +static void sd_plugin_card(SDHCIState *sd, DriveInfo *di)
> +{
> +    BlockBackend *blk = di ? blk_by_legacy_dinfo(di) : NULL;
> +    DeviceState *card;
> +
> +    card = qdev_create(qdev_get_child_bus(DEVICE(sd), "sd-bus"), 
> TYPE_SD_CARD);
> +    object_property_add_child(OBJECT(sd), "card[*]", OBJECT(card),
> +                              &error_fatal);
> +    qdev_prop_set_drive(card, "drive", blk, &error_fatal);
> +    object_property_set_bool(OBJECT(card), true, "realized", &error_fatal);
> +}
> +
>  static void versal_virt_init(MachineState *machine)
>  {
>      VersalVirt *s = XLNX_VERSAL_VIRT_MACHINE(machine);
>      int psci_conduit = QEMU_PSCI_CONDUIT_DISABLED;
> +    int i;
>  
>      /*
>       * If the user provides an Operating System to be loaded, we expect them
> @@ -455,6 +495,7 @@ static void versal_virt_init(MachineState *machine)
>      fdt_add_gic_nodes(s);
>      fdt_add_timer_nodes(s);
>      fdt_add_zdma_nodes(s);
> +    fdt_add_sd_nodes(s);
>      fdt_add_cpu_nodes(s, psci_conduit);
>      fdt_add_clk_node(s, "/clk125", 125000000, s->phandle.clk_125Mhz);
>      fdt_add_clk_node(s, "/clk25", 25000000, s->phandle.clk_25Mhz);
> @@ -464,6 +505,11 @@ static void versal_virt_init(MachineState *machine)
>      memory_region_add_subregion_overlap(get_system_memory(),
>                                          0, &s->soc.fpd.apu.mr, 0);
>  
> +    /* Plugin SD cards.  */
> +    for (i = 0; i < ARRAY_SIZE(s->soc.pmc.iou.sd); i++) {
> +        sd_plugin_card(&s->soc.pmc.iou.sd[i], drive_get_next(IF_SD));
> +    }
> +
>      s->binfo.ram_size = machine->ram_size;
>      s->binfo.loader_start = 0x0;
>      s->binfo.get_dtb = versal_virt_get_dtb;
>