[PATCH v12 3/3] Versal: Connect DWC3 controller with virt-versal

[Sai Pavan Boddu <sai.pavan.boddu@xilinx.com>]

From: Vikram Garhwal <fnu.vikram@xilinx.com>

Connect dwc3 controller and usb2-reg module to xlnx-versal SOC, its placed
in iou of lpd domain and configure it as dual port host controller. Add the
respective guest dts nodes for "xlnx-versal-virt" machine.

Signed-off-by: Vikram Garhwal <fnu.vikram@xilinx.com>
Signed-off-by: Sai Pavan Boddu <sai.pavan.boddu@xilinx.com>
---
 hw/arm/xlnx-versal-virt.c    | 58 ++++++++++++++++++++++++++++++++++++++++++++
 hw/arm/xlnx-versal.c         | 34 ++++++++++++++++++++++++++
 include/hw/arm/xlnx-versal.h | 14 +++++++++++
 3 files changed, 106 insertions(+)

diff --git a/hw/arm/xlnx-versal-virt.c b/hw/arm/xlnx-versal-virt.c
index 03e2320..f0ac5ba 100644
--- a/hw/arm/xlnx-versal-virt.c
+++ b/hw/arm/xlnx-versal-virt.c
@@ -39,6 +39,8 @@ struct VersalVirt {
         uint32_t ethernet_phy[2];
         uint32_t clk_125Mhz;
         uint32_t clk_25Mhz;
+        uint32_t usb;
+        uint32_t dwc;
     } phandle;
     struct arm_boot_info binfo;
 
@@ -66,6 +68,8 @@ static void fdt_create(VersalVirt *s)
     s->phandle.clk_25Mhz = qemu_fdt_alloc_phandle(s->fdt);
     s->phandle.clk_125Mhz = qemu_fdt_alloc_phandle(s->fdt);
 
+    s->phandle.usb = qemu_fdt_alloc_phandle(s->fdt);
+    s->phandle.dwc = qemu_fdt_alloc_phandle(s->fdt);
     /* Create /chosen node for load_dtb.  */
     qemu_fdt_add_subnode(s->fdt, "/chosen");
 
@@ -148,6 +152,59 @@ static void fdt_add_timer_nodes(VersalVirt *s)
                      compat, sizeof(compat));
 }
 
+static void fdt_add_usb_xhci_nodes(VersalVirt *s)
+{
+    const char clocknames[] = "bus_clk\0ref_clk";
+    char *name = g_strdup_printf("/usb@%" PRIx32, MM_USB2_CTRL_REGS);
+    const char compat[] = "xlnx,versal-dwc3";
+
+    qemu_fdt_add_subnode(s->fdt, name);
+    qemu_fdt_setprop(s->fdt, name, "compatible",
+                         compat, sizeof(compat));
+    qemu_fdt_setprop_sized_cells(s->fdt, name, "reg",
+                                 2, MM_USB2_CTRL_REGS,
+                                 2, MM_USB2_CTRL_REGS_SIZE);
+    qemu_fdt_setprop(s->fdt, name, "clock-names",
+                         clocknames, sizeof(clocknames));
+    qemu_fdt_setprop_cells(s->fdt, name, "clocks",
+                               s->phandle.clk_25Mhz, s->phandle.clk_125Mhz);
+    qemu_fdt_setprop(s->fdt, name, "ranges", NULL, 0);
+    qemu_fdt_setprop_cell(s->fdt, name, "#address-cells", 2);
+    qemu_fdt_setprop_cell(s->fdt, name, "#size-cells", 2);
+    qemu_fdt_setprop_cell(s->fdt, name, "phandle", s->phandle.usb);
+    g_free(name);
+
+    {
+        const char irq_name[] = "dwc_usb3";
+        const char compat[] = "snps,dwc3";
+
+        name = g_strdup_printf("/usb@%" PRIx32 "/dwc3@%" PRIx32,
+                               MM_USB2_CTRL_REGS, MM_USB_XHCI_0);
+        qemu_fdt_add_subnode(s->fdt, name);
+        qemu_fdt_setprop(s->fdt, name, "compatible",
+                         compat, sizeof(compat));
+        qemu_fdt_setprop_sized_cells(s->fdt, name, "reg",
+                                     2, MM_USB_XHCI_0, 2, MM_USB_XHCI_0_SIZE);
+        qemu_fdt_setprop(s->fdt, name, "interrupt-names",
+                         irq_name, sizeof(irq_name));
+        qemu_fdt_setprop_cells(s->fdt, name, "interrupts",
+                                   GIC_FDT_IRQ_TYPE_SPI, VERSAL_USB0_IRQ_0,
+                                   GIC_FDT_IRQ_FLAGS_LEVEL_HI);
+        qemu_fdt_setprop_cell(s->fdt, name,
+                              "snps,quirk-frame-length-adjustment", 0x20);
+        qemu_fdt_setprop_cells(s->fdt, name, "#stream-id-cells", 1);
+        qemu_fdt_setprop_string(s->fdt, name, "dr_mode", "host");
+        qemu_fdt_setprop_string(s->fdt, name, "phy-names", "usb3-phy");
+        qemu_fdt_setprop(s->fdt, name, "snps,dis_u2_susphy_quirk", NULL, 0);
+        qemu_fdt_setprop(s->fdt, name, "snps,dis_u3_susphy_quirk", NULL, 0);
+        qemu_fdt_setprop(s->fdt, name, "snps,refclk_fladj", NULL, 0);
+        qemu_fdt_setprop(s->fdt, name, "snps,mask_phy_reset", NULL, 0);
+        qemu_fdt_setprop_cell(s->fdt, name, "phandle", s->phandle.dwc);
+        qemu_fdt_setprop_string(s->fdt, name, "maximum-speed", "high-speed");
+        g_free(name);
+    }
+}
+
 static void fdt_add_uart_nodes(VersalVirt *s)
 {
     uint64_t addrs[] = { MM_UART1, MM_UART0 };
@@ -515,6 +572,7 @@ static void versal_virt_init(MachineState *machine)
     fdt_add_gic_nodes(s);
     fdt_add_timer_nodes(s);
     fdt_add_zdma_nodes(s);
+    fdt_add_usb_xhci_nodes(s);
     fdt_add_sd_nodes(s);
     fdt_add_rtc_node(s);
     fdt_add_cpu_nodes(s, psci_conduit);
diff --git a/hw/arm/xlnx-versal.c b/hw/arm/xlnx-versal.c
index 12ba6c4..ddf43db 100644
--- a/hw/arm/xlnx-versal.c
+++ b/hw/arm/xlnx-versal.c
@@ -145,6 +145,39 @@ static void versal_create_uarts(Versal *s, qemu_irq *pic)
     }
 }
 
+static void versal_create_usbs(Versal *s, qemu_irq *pic)
+{
+    DeviceState *dev, *xhci_dev;
+    MemoryRegion *mr;
+
+    object_initialize_child(OBJECT(s), "dwc3-0", &s->lpd.iou.usb.dwc3,
+                            TYPE_USB_DWC3);
+    dev = DEVICE(&s->lpd.iou.usb.dwc3);
+    xhci_dev = DEVICE(&s->lpd.iou.usb.dwc3.sysbus_xhci);
+
+    object_property_set_link(OBJECT(xhci_dev), "dma", OBJECT(&s->mr_ps),
+                             &error_abort);
+    qdev_prop_set_uint32(xhci_dev, "intrs", 1);
+    qdev_prop_set_uint32(xhci_dev, "slots", 2);
+
+    sysbus_realize(SYS_BUS_DEVICE(dev), &error_fatal);
+
+    mr = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0);
+    memory_region_add_subregion(&s->mr_ps, MM_USB_XHCI_0_DWC3_GLOBAL, mr);
+    mr = sysbus_mmio_get_region(SYS_BUS_DEVICE(xhci_dev), 0);
+    memory_region_add_subregion(&s->mr_ps, MM_USB_XHCI_0, mr);
+
+    sysbus_connect_irq(SYS_BUS_DEVICE(xhci_dev), 0, pic[VERSAL_USB0_IRQ_0]);
+
+    object_initialize_child(OBJECT(s), "usb2ctrl-0", &s->lpd.iou.usb.ctrl,
+                           TYPE_XILINX_VERSAL_USB2_CTRL_REGS);
+    dev = DEVICE(&s->lpd.iou.usb.ctrl);
+    sysbus_realize(SYS_BUS_DEVICE(dev), &error_fatal);
+
+    mr = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0);
+    memory_region_add_subregion(&s->mr_ps, MM_USB2_CTRL_REGS, mr);
+}
+
 static void versal_create_gems(Versal *s, qemu_irq *pic)
 {
     int i;
@@ -333,6 +366,7 @@ static void versal_realize(DeviceState *dev, Error **errp)
     versal_create_apu_cpus(s);
     versal_create_apu_gic(s, pic);
     versal_create_uarts(s, pic);
+    versal_create_usbs(s, pic);
     versal_create_gems(s, pic);
     versal_create_admas(s, pic);
     versal_create_sds(s, pic);
diff --git a/include/hw/arm/xlnx-versal.h b/include/hw/arm/xlnx-versal.h
index 8ce8e63..e0a6c66 100644
--- a/include/hw/arm/xlnx-versal.h
+++ b/include/hw/arm/xlnx-versal.h
@@ -21,6 +21,8 @@
 #include "hw/net/cadence_gem.h"
 #include "hw/rtc/xlnx-zynqmp-rtc.h"
 #include "qom/object.h"
+#include "hw/usb/hcd-dwc3.h"
+#include "hw/misc/xlnx-versal-usb2-ctrl-regs.h"
 
 #define TYPE_XLNX_VERSAL "xlnx-versal"
 OBJECT_DECLARE_SIMPLE_TYPE(Versal, XLNX_VERSAL)
@@ -59,6 +61,10 @@ struct Versal {
             PL011State uart[XLNX_VERSAL_NR_UARTS];
             CadenceGEMState gem[XLNX_VERSAL_NR_GEMS];
             XlnxZDMA adma[XLNX_VERSAL_NR_ADMAS];
+            struct {
+                USBDWC3 dwc3;
+                VersalUsb2CtrlRegs ctrl;
+            } usb;
         } iou;
     } lpd;
 
@@ -88,6 +94,7 @@ struct Versal {
 
 #define VERSAL_UART0_IRQ_0         18
 #define VERSAL_UART1_IRQ_0         19
+#define VERSAL_USB0_IRQ_0          22
 #define VERSAL_GEM0_IRQ_0          56
 #define VERSAL_GEM0_WAKE_IRQ_0     57
 #define VERSAL_GEM1_IRQ_0          58
@@ -125,6 +132,13 @@ struct Versal {
 #define MM_OCM                      0xfffc0000U
 #define MM_OCM_SIZE                 0x40000
 
+#define MM_USB2_CTRL_REGS           0xFF9D0000
+#define MM_USB2_CTRL_REGS_SIZE      0x10000
+
+#define MM_USB_XHCI_0               0xFE200000
+#define MM_USB_XHCI_0_SIZE          0x10000
+#define MM_USB_XHCI_0_DWC3_GLOBAL   (MM_USB_XHCI_0 + 0xC100)
+
 #define MM_TOP_DDR                  0x0
 #define MM_TOP_DDR_SIZE             0x80000000U
 #define MM_TOP_DDR_2                0x800000000ULL
-- 
2.7.4