[PATCH v5 7/7] Versal: Connect DWC3 controller with virt-versal

[Sai Pavan Boddu]

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

Connect dwc3 controller and usb2-reg module to virt-versal.
Configure it as dual port host controller.

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    | 59 ++++++++++++++++++++++++++++++++++++++++++++
 hw/arm/xlnx-versal.c         | 38 ++++++++++++++++++++++++++++
 include/hw/arm/xlnx-versal.h | 14 +++++++++++
 3 files changed, 111 insertions(+)

diff --git a/hw/arm/xlnx-versal-virt.c b/hw/arm/xlnx-versal-virt.c
index 4b3152e..398693d 100644
--- a/hw/arm/xlnx-versal-virt.c
+++ b/hw/arm/xlnx-versal-virt.c
@@ -39,6 +39,8 @@ typedef 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 +152,60 @@ 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 *usb2name = g_strdup_printf("/usb@ff9d0000");
+    const char dwcCompat[] = "xlnx,versal-dwc3";
+    qemu_fdt_add_subnode(s->fdt, usb2name);
+    qemu_fdt_setprop(s->fdt, usb2name, "compatible",
+                         dwcCompat, sizeof(dwcCompat));
+    qemu_fdt_setprop_sized_cells(s->fdt, usb2name, "reg",
+                                     2, MM_USB2_REGS, 2, 0x100);
+    qemu_fdt_setprop(s->fdt, usb2name, "clock-names",
+                         clocknames, sizeof(clocknames));
+    qemu_fdt_setprop_cells(s->fdt, usb2name, "clocks",
+                               s->phandle.clk_25Mhz, s->phandle.clk_125Mhz);
+    qemu_fdt_setprop(s->fdt, usb2name, "ranges", NULL, 0);
+    qemu_fdt_setprop_cell(s->fdt, usb2name, "#address-cells", 2);
+    qemu_fdt_setprop_cell(s->fdt, usb2name, "#size-cells", 2);
+    qemu_fdt_setprop_cell(s->fdt, usb2name, "phandle", s->phandle.usb);
+    g_free(usb2name);
+
+    {
+        uint64_t addr = MM_USB_XHCI_0;
+        unsigned int irq = VERSAL_USB0_IRQ_0;
+        const char compat[] = "snps,dwc3";
+        const char intName[] = "dwc_usb3";
+        uint32_t frameLen = 0x20;
+
+        char *name = g_strdup_printf("/usb@ff9d0000/dwc3@%" PRIx64, addr);
+        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, addr, 2, MM_USB_XHCI_SIZE_0);
+        qemu_fdt_setprop(s->fdt, name, "interrupt-names",
+                         intName, sizeof(intName));
+        qemu_fdt_setprop_cells(s->fdt, name, "interrupts",
+                                   GIC_FDT_IRQ_TYPE_SPI, irq,
+                                   GIC_FDT_IRQ_FLAGS_LEVEL_HI);
+        qemu_fdt_setprop_cell(s->fdt, name,
+                              "snps,quirk-frame-length-adjustment",
+                               frameLen);
+        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(s->fdt, name, "snps,usb3_lpm_capable", 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 +573,7 @@ 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 e3aa4bd..9b241de 100644
--- a/hw/arm/xlnx-versal.c
+++ b/hw/arm/xlnx-versal.c
@@ -145,6 +145,43 @@ static void versal_create_uarts(Versal *s, qemu_irq *pic)
     }
 }
 
+static void versal_create_usbs(Versal *s, qemu_irq *pic)
+{
+    char *name = g_strdup_printf("dwc3-0");
+    DeviceState *dev, *xhci_dev;
+    MemoryRegion *mr;
+
+    object_initialize_child(OBJECT(s), name, &s->fpd.iou.dwc3,
+                            TYPE_USB_DWC3);
+    dev = DEVICE(&s->fpd.iou.dwc3);
+    xhci_dev = DEVICE(&s->fpd.iou.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 + 0xC100 , 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]);
+    g_free(name);
+
+    name = g_strdup_printf("usb2reg-0");
+    object_initialize_child(OBJECT(s), name, &s->fpd.iou.Usb2Regs,
+                           "xlnx.usb2_regs");
+    dev = DEVICE(&s->fpd.iou.Usb2Regs);
+    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_REGS, mr);
+    g_free(name);
+}
+
 static void versal_create_gems(Versal *s, qemu_irq *pic)
 {
     int i;
@@ -332,6 +369,7 @@ 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 9c9f47b..e19cfd5 100644
--- a/include/hw/arm/xlnx-versal.h
+++ b/include/hw/arm/xlnx-versal.h
@@ -20,6 +20,8 @@
 #include "hw/dma/xlnx-zdma.h"
 #include "hw/net/cadence_gem.h"
 #include "hw/rtc/xlnx-zynqmp-rtc.h"
+#include "hw/usb/hcd-dwc3.h"
+#include "hw/misc/xlnx-versal-usb2-regs.h"
 
 #define TYPE_XLNX_VERSAL "xlnx-versal"
 #define XLNX_VERSAL(obj) OBJECT_CHECK(Versal, (obj), TYPE_XLNX_VERSAL)
@@ -42,6 +44,11 @@ typedef struct Versal {
             ARMCPU cpu[XLNX_VERSAL_NR_ACPUS];
             GICv3State gic;
         } apu;
+
+        struct {
+            USBDWC3 dwc3;
+            XlnxUsb2Regs Usb2Regs;
+        } iou;
     } fpd;
 
     MemoryRegion mr_ps;
@@ -87,6 +94,7 @@ typedef 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
@@ -124,6 +132,12 @@ typedef struct Versal {
 #define MM_OCM                      0xfffc0000U
 #define MM_OCM_SIZE                 0x40000
 
+#define MM_USB2_REGS                0xFF9D0000
+#define MM_USB2_SIZE                0x10000
+
+#define MM_USB_XHCI_0               0xFE200000
+#define MM_USB_XHCI_SIZE_0          0x10000
+
 #define MM_TOP_DDR                  0x0
 #define MM_TOP_DDR_SIZE             0x80000000U
 #define MM_TOP_DDR_2                0x800000000ULL
-- 
2.7.4