qemu/hw/usb/hcd-xhci-sysbus.c
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   1/*
   2 * USB xHCI controller for system-bus interface
   3 * Based on hcd-echi-sysbus.c
   4
   5 * SPDX-FileCopyrightText: 2020 Xilinx
   6 * SPDX-FileContributor: Author: Sai Pavan Boddu <sai.pavan.boddu@xilinx.com>
   7 *
   8 * SPDX-License-Identifier: GPL-2.0-or-later
   9 */
  10#include "qemu/osdep.h"
  11#include "hw/qdev-properties.h"
  12#include "migration/vmstate.h"
  13#include "trace.h"
  14#include "qapi/error.h"
  15#include "hcd-xhci-sysbus.h"
  16#include "hw/acpi/aml-build.h"
  17#include "hw/irq.h"
  18
  19static bool xhci_sysbus_intr_raise(XHCIState *xhci, int n, bool level)
  20{
  21    XHCISysbusState *s = container_of(xhci, XHCISysbusState, xhci);
  22
  23    qemu_set_irq(s->irq[n], level);
  24
  25    return false;
  26}
  27
  28void xhci_sysbus_reset(DeviceState *dev)
  29{
  30    XHCISysbusState *s = XHCI_SYSBUS(dev);
  31
  32    device_cold_reset(DEVICE(&s->xhci));
  33}
  34
  35static void xhci_sysbus_realize(DeviceState *dev, Error **errp)
  36{
  37    XHCISysbusState *s = XHCI_SYSBUS(dev);
  38
  39    object_property_set_link(OBJECT(&s->xhci), "host", OBJECT(s), NULL);
  40    if (!qdev_realize(DEVICE(&s->xhci), NULL, errp)) {
  41        return;
  42    }
  43    s->irq = g_new0(qemu_irq, s->xhci.numintrs);
  44    qdev_init_gpio_out_named(dev, s->irq, SYSBUS_DEVICE_GPIO_IRQ,
  45                             s->xhci.numintrs);
  46    if (s->xhci.dma_mr) {
  47        s->xhci.as =  g_malloc0(sizeof(AddressSpace));
  48        address_space_init(s->xhci.as, s->xhci.dma_mr, NULL);
  49    } else {
  50        s->xhci.as = &address_space_memory;
  51    }
  52
  53    sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->xhci.mem);
  54}
  55
  56static void xhci_sysbus_instance_init(Object *obj)
  57{
  58    XHCISysbusState *s = XHCI_SYSBUS(obj);
  59
  60    object_initialize_child(obj, "xhci-core", &s->xhci, TYPE_XHCI);
  61    qdev_alias_all_properties(DEVICE(&s->xhci), obj);
  62
  63    object_property_add_link(obj, "dma", TYPE_MEMORY_REGION,
  64                             (Object **)&s->xhci.dma_mr,
  65                             qdev_prop_allow_set_link_before_realize,
  66                             OBJ_PROP_LINK_STRONG);
  67    s->xhci.intr_update = NULL;
  68    s->xhci.intr_raise = xhci_sysbus_intr_raise;
  69}
  70
  71void xhci_sysbus_build_aml(Aml *scope, uint32_t mmio, unsigned int irq)
  72{
  73    Aml *dev = aml_device("XHCI");
  74    Aml *crs = aml_resource_template();
  75
  76    aml_append(crs, aml_memory32_fixed(mmio, XHCI_LEN_REGS, AML_READ_WRITE));
  77    aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
  78                                  AML_EXCLUSIVE, &irq, 1));
  79
  80    aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0D10")));
  81    aml_append(dev, aml_name_decl("_CRS", crs));
  82    aml_append(scope, dev);
  83}
  84
  85static Property xhci_sysbus_props[] = {
  86    DEFINE_PROP_UINT32("intrs", XHCISysbusState, xhci.numintrs, XHCI_MAXINTRS),
  87    DEFINE_PROP_UINT32("slots", XHCISysbusState, xhci.numslots, XHCI_MAXSLOTS),
  88    DEFINE_PROP_END_OF_LIST(),
  89};
  90
  91static const VMStateDescription vmstate_xhci_sysbus = {
  92    .name = "xhci-sysbus",
  93    .version_id = 1,
  94    .fields = (VMStateField[]) {
  95        VMSTATE_STRUCT(xhci, XHCISysbusState, 1, vmstate_xhci, XHCIState),
  96        VMSTATE_END_OF_LIST()
  97    }
  98};
  99
 100static void xhci_sysbus_class_init(ObjectClass *klass, void *data)
 101{
 102    DeviceClass *dc = DEVICE_CLASS(klass);
 103
 104    dc->reset = xhci_sysbus_reset;
 105    dc->realize = xhci_sysbus_realize;
 106    dc->vmsd = &vmstate_xhci_sysbus;
 107    device_class_set_props(dc, xhci_sysbus_props);
 108}
 109
 110static const TypeInfo xhci_sysbus_info = {
 111    .name          = TYPE_XHCI_SYSBUS,
 112    .parent        = TYPE_SYS_BUS_DEVICE,
 113    .instance_size = sizeof(XHCISysbusState),
 114    .class_init    = xhci_sysbus_class_init,
 115    .instance_init = xhci_sysbus_instance_init
 116};
 117
 118static void xhci_sysbus_register_types(void)
 119{
 120    type_register_static(&xhci_sysbus_info);
 121}
 122
 123type_init(xhci_sysbus_register_types);
 124