hw/usb/hcd-xhci-sysbus.c

   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
  19 static void 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
  26 void xhci_sysbus_reset(DeviceState *dev)
  27 {
  28     XHCISysbusState *s = XHCI_SYSBUS(dev);
  29
  30     device_legacy_reset(DEVICE(&s->xhci));
  31 }
  32
  33 static void xhci_sysbus_realize(DeviceState *dev, Error **errp)
  34 {
  35     XHCISysbusState *s = XHCI_SYSBUS(dev);
  36     Error *err = NULL;
  37
  38     object_property_set_link(OBJECT(&s->xhci), "host", OBJECT(s), NULL);
  39     object_property_set_bool(OBJECT(&s->xhci), "realized", true, &err);
  40     if (err) {
  41         error_propagate(errp, err);
  42         return;
  43     }
  44     s->irq = g_new0(qemu_irq, s->xhci.numintrs);
  45     qdev_init_gpio_out_named(dev, s->irq, SYSBUS_DEVICE_GPIO_IRQ,
  46                              s->xhci.numintrs);
  47     if (s->xhci.dma_mr) {
  48         s->xhci.as =  g_malloc0(sizeof(AddressSpace));
  49         address_space_init(s->xhci.as, s->xhci.dma_mr, NULL);
  50     } else {
  51         s->xhci.as = &address_space_memory;
  52     }
  53
  54     sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->xhci.mem);
  55 }
  56
  57 static void xhci_sysbus_instance_init(Object *obj)
  58 {
  59     XHCISysbusState *s = XHCI_SYSBUS(obj);
  60
  61     object_initialize_child(obj, "xhci-core", &s->xhci, TYPE_XHCI);
  62     qdev_alias_all_properties(DEVICE(&s->xhci), obj);
  63
  64     object_property_add_link(obj, "dma", TYPE_MEMORY_REGION,
  65                              (Object **)&s->xhci.dma_mr,
  66                              qdev_prop_allow_set_link_before_realize,
  67                              OBJ_PROP_LINK_STRONG);
  68     s->xhci.intr_update = NULL;
  69     s->xhci.intr_raise = xhci_sysbus_intr_raise;
  70 }
  71
  72 void xhci_sysbus_build_aml(Aml *scope, uint32_t mmio, unsigned int irq)
  73 {
  74     Aml *dev = aml_device("XHCI");
  75     Aml *crs = aml_resource_template();
  76
  77     aml_append(crs, aml_memory32_fixed(mmio, XHCI_LEN_REGS, AML_READ_WRITE));
  78     aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
  79                                   AML_EXCLUSIVE, &irq, 1));
  80
  81     aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0D10")));
  82     aml_append(dev, aml_name_decl("_CRS", crs));
  83     aml_append(scope, dev);
  84 }
  85
  86 static Property xhci_sysbus_props[] = {
  87     DEFINE_PROP_UINT32("intrs", XHCISysbusState, xhci.numintrs, XHCI_MAXINTRS),
  88     DEFINE_PROP_UINT32("slots", XHCISysbusState, xhci.numslots, XHCI_MAXSLOTS),
  89     DEFINE_PROP_END_OF_LIST(),
  90 };
  91
  92 static const VMStateDescription vmstate_xhci_sysbus = {
  93     .name = "xhci-sysbus",
  94     .version_id = 1,
  95     .fields = (VMStateField[]) {
  96         VMSTATE_STRUCT(xhci, XHCISysbusState, 1, vmstate_xhci, XHCIState),
  97         VMSTATE_END_OF_LIST()
  98     }
  99 };
 100
 101 static void xhci_sysbus_class_init(ObjectClass *klass, void *data)
 102 {
 103     DeviceClass *dc = DEVICE_CLASS(klass);
 104
 105     dc->reset = xhci_sysbus_reset;
 106     dc->realize = xhci_sysbus_realize;
 107     dc->vmsd = &vmstate_xhci_sysbus;
 108     device_class_set_props(dc, xhci_sysbus_props);
 109 }
 110
 111 static const TypeInfo xhci_sysbus_info = {
 112     .name          = TYPE_XHCI_SYSBUS,
 113     .parent        = TYPE_SYS_BUS_DEVICE,
 114     .instance_size = sizeof(XHCISysbusState),
 115     .class_init    = xhci_sysbus_class_init,
 116     .instance_init = xhci_sysbus_instance_init
 117 };
 118
 119 static void xhci_sysbus_register_types(void)
 120 {
 121     type_register_static(&xhci_sysbus_info);
 122 }
 123
 124 type_init(xhci_sysbus_register_types);