hw/usb/hcd-ehci-sysbus.c


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/*
 * QEMU USB EHCI Emulation
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or(at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

#include "hw/usb/hcd-ehci.h"

static const VMStateDescription vmstate_ehci_sysbus = {
    .name        = "ehci-sysbus",
    .version_id  = 2,
    .minimum_version_id  = 1,
    .fields      = (VMStateField[]) {
        VMSTATE_STRUCT(ehci, EHCISysBusState, 2, vmstate_ehci, EHCIState),
        VMSTATE_END_OF_LIST()
    }
};

static Property ehci_sysbus_properties[] = {
    DEFINE_PROP_UINT32("maxframes", EHCISysBusState, ehci.maxframes, 128),
    DEFINE_PROP_END_OF_LIST(),
};

static void usb_ehci_sysbus_realize(DeviceState *dev, Error **errp)
{
    SysBusDevice *d = SYS_BUS_DEVICE(dev);
    EHCISysBusState *i = SYS_BUS_EHCI(dev);
    EHCIState *s = &i->ehci;

    usb_ehci_realize(s, dev, errp);
    sysbus_init_irq(d, &s->irq);
}

static void ehci_sysbus_init(Object *obj)
{
    SysBusDevice *d = SYS_BUS_DEVICE(obj);
    EHCISysBusState *i = SYS_BUS_EHCI(obj);
    SysBusEHCIClass *sec = SYS_BUS_EHCI_GET_CLASS(obj);
    EHCIState *s = &i->ehci;

    s->capsbase = sec->capsbase;
    s->opregbase = sec->opregbase;
    s->portscbase = sec->portscbase;
    s->portnr = sec->portnr;
    s->as = &address_space_memory;

    usb_ehci_init(s, DEVICE(obj));
    sysbus_init_mmio(d, &s->mem);
}

static void ehci_sysbus_class_init(ObjectClass *klass, void *data)
{
    DeviceClass *dc = DEVICE_CLASS(klass);
    SysBusEHCIClass *sec = SYS_BUS_EHCI_CLASS(klass);

    sec->portscbase = 0x44;
    sec->portnr = NB_PORTS;

    dc->realize = usb_ehci_sysbus_realize;
    dc->vmsd = &vmstate_ehci_sysbus;
    dc->props = ehci_sysbus_properties;
    set_bit(DEVICE_CATEGORY_USB, dc->categories);
}

static const TypeInfo ehci_type_info = {
    .name          = TYPE_SYS_BUS_EHCI,
    .parent        = TYPE_SYS_BUS_DEVICE,
    .instance_size = sizeof(EHCISysBusState),
    .instance_init = ehci_sysbus_init,
    .abstract      = true,
    .class_init    = ehci_sysbus_class_init,
    .class_size    = sizeof(SysBusEHCIClass),
};

static void ehci_xlnx_class_init(ObjectClass *oc, void *data)
{
    SysBusEHCIClass *sec = SYS_BUS_EHCI_CLASS(oc);
    DeviceClass *dc = DEVICE_CLASS(oc);

    set_bit(DEVICE_CATEGORY_USB, dc->categories);
    sec->capsbase = 0x100;
    sec->opregbase = 0x140;
}

static const TypeInfo ehci_xlnx_type_info = {
    .name          = "xlnx,ps7-usb",
    .parent        = TYPE_SYS_BUS_EHCI,
    .class_init    = ehci_xlnx_class_init,
};

static void ehci_exynos4210_class_init(ObjectClass *oc, void *data)
{
    SysBusEHCIClass *sec = SYS_BUS_EHCI_CLASS(oc);
    DeviceClass *dc = DEVICE_CLASS(oc);

    sec->capsbase = 0x0;
    sec->opregbase = 0x10;
    set_bit(DEVICE_CATEGORY_USB, dc->categories);
}

static const TypeInfo ehci_exynos4210_type_info = {
    .name          = TYPE_EXYNOS4210_EHCI,
    .parent        = TYPE_SYS_BUS_EHCI,
    .class_init    = ehci_exynos4210_class_init,
};

static void ehci_tegra2_class_init(ObjectClass *oc, void *data)
{
    SysBusEHCIClass *sec = SYS_BUS_EHCI_CLASS(oc);
    DeviceClass *dc = DEVICE_CLASS(oc);

    sec->capsbase = 0x100;
    sec->opregbase = 0x140;
    set_bit(DEVICE_CATEGORY_USB, dc->categories);
}

static const TypeInfo ehci_tegra2_type_info = {
    .name          = TYPE_TEGRA2_EHCI,
    .parent        = TYPE_SYS_BUS_EHCI,
    .class_init    = ehci_tegra2_class_init,
};

/*
 * Faraday FUSBH200 USB 2.0 EHCI
 */

/**
 * FUSBH200EHCIRegs:
 * @FUSBH200_REG_EOF_ASTR: EOF/Async. Sleep Timer Register
 * @FUSBH200_REG_BMCSR: Bus Monitor Control/Status Register
 */
enum FUSBH200EHCIRegs {
    FUSBH200_REG_EOF_ASTR = 0x34,
    FUSBH200_REG_BMCSR    = 0x40,
};

static uint64_t fusbh200_ehci_read(void *opaque, hwaddr addr, unsigned size)
{
    EHCIState *s = opaque;
    hwaddr off = s->opregbase + s->portscbase + 4 * s->portnr + addr;

    switch (off) {
    case FUSBH200_REG_EOF_ASTR:
        return 0x00000041;
    case FUSBH200_REG_BMCSR:
        /* High-Speed, VBUS valid, interrupt level-high active */
        return (2 << 9) | (1 << 8) | (1 << 3);
    }

    return 0;
}

static void fusbh200_ehci_write(void *opaque, hwaddr addr, uint64_t val,
                                unsigned size)
{
}

static const MemoryRegionOps fusbh200_ehci_mmio_ops = {
    .read = fusbh200_ehci_read,
    .write = fusbh200_ehci_write,
    .valid.min_access_size = 4,
    .valid.max_access_size = 4,
    .endianness = DEVICE_LITTLE_ENDIAN,
};

static void fusbh200_ehci_init(Object *obj)
{
    EHCISysBusState *i = SYS_BUS_EHCI(obj);
    FUSBH200EHCIState *f = FUSBH200_EHCI(obj);
    EHCIState *s = &i->ehci;

    memory_region_init_io(&f->mem_vendor, OBJECT(f), &fusbh200_ehci_mmio_ops, s,
                          "fusbh200", 0x4c);
    memory_region_add_subregion(&s->mem,
                                s->opregbase + s->portscbase + 4 * s->portnr,
                                &f->mem_vendor);
}

static void fusbh200_ehci_class_init(ObjectClass *oc, void *data)
{
    SysBusEHCIClass *sec = SYS_BUS_EHCI_CLASS(oc);
    DeviceClass *dc = DEVICE_CLASS(oc);

    sec->capsbase = 0x0;
    sec->opregbase = 0x10;
    sec->portscbase = 0x20;
    sec->portnr = 1;
    set_bit(DEVICE_CATEGORY_USB, dc->categories);
}

static const TypeInfo ehci_fusbh200_type_info = {
    .name          = TYPE_FUSBH200_EHCI,
    .parent        = TYPE_SYS_BUS_EHCI,
    .instance_size = sizeof(FUSBH200EHCIState),
    .instance_init = fusbh200_ehci_init,
    .class_init    = fusbh200_ehci_class_init,
};

static void ehci_sysbus_register_types(void)
{
    type_register_static(&ehci_type_info);
    type_register_static(&ehci_xlnx_type_info);
    type_register_static(&ehci_exynos4210_type_info);
    type_register_static(&ehci_tegra2_type_info);
    type_register_static(&ehci_fusbh200_type_info);
}

type_init(ehci_sysbus_register_types)
/*
 * Dealloc Visitor
 *
 * Copyright IBM, Corp. 2011
 *
 * Authors:
 *  Michael Roth   <mdroth@linux.vnet.ibm.com>
 *
 * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
 * See the COPYING.LIB file in the top-level directory.
 *
 */

#include "qapi/dealloc-visitor.h"
#include "qemu/queue.h"
#include "qemu-common.h"
#include "qapi/qmp/types.h"
#include "qapi/visitor-impl.h"

typedef struct StackEntry
{
    void *value;
    bool is_list_head;
    QTAILQ_ENTRY(StackEntry) node;
} StackEntry;

struct QapiDeallocVisitor
{
    Visitor visitor;
    QTAILQ_HEAD(, StackEntry) stack;
    bool is_list_head;
};

static QapiDeallocVisitor *to_qov(Visitor *v)
{
    return container_of(v, QapiDeallocVisitor, visitor);
}

static void qapi_dealloc_push(QapiDeallocVisitor *qov, void *value)
{
    StackEntry *e = g_malloc0(sizeof(*e));

    e->value = value;

    /* see if we're just pushing a list head tracker */
    if (value == NULL) {
        e->is_list_head = true;
    }
    QTAILQ_INSERT_HEAD(&qov->stack, e, node);
}

static void *qapi_dealloc_pop(QapiDeallocVisitor *qov)
{
    StackEntry *e = QTAILQ_FIRST(&qov->stack);
    QObject *value;
    QTAILQ_REMOVE(&qov->stack, e, node);
    value = e->value;
    g_free(e);
    return value;
}

static void qapi_dealloc_start_struct(Visitor *v, void **obj, const char *kind,
                                      const char *name, size_t unused,
                                      Error **errp)
{
    QapiDeallocVisitor *qov = to_qov(v);
    qapi_dealloc_push(qov, obj);
}

static void qapi_dealloc_end_struct(Visitor *v, Error **errp)
{
    QapiDeallocVisitor *qov = to_qov(v);
    void **obj = qapi_dealloc_pop(qov);
    if (obj) {
        g_free(*obj);
    }
}

static void qapi_dealloc_start_implicit_struct(Visitor *v,
                                               void **obj,
                                               size_t size,
                                               Error **errp)
{
    QapiDeallocVisitor *qov = to_qov(v);
    qapi_dealloc_push(qov, obj);
}

static void qapi_dealloc_end_implicit_struct(Visitor *v, Error **errp)
{
    QapiDeallocVisitor *qov = to_qov(v);
    void **obj = qapi_dealloc_pop(qov);
    if (obj) {
        g_free(*obj);
    }
}

static void qapi_dealloc_start_list(Visitor *v, const char *name, Error **errp)
{
    QapiDeallocVisitor *qov = to_qov(v);
    qapi_dealloc_push(qov, NULL);
}

static GenericList *qapi_dealloc_next_list(Visitor *v, GenericList **listp,
                                           Error **errp)
{
    GenericList *list = *listp;
    QapiDeallocVisitor *qov = to_qov(v);
    StackEntry *e = QTAILQ_FIRST(&qov->stack);

    if (e && e->is_list_head) {
        e->is_list_head = false;
        return list;
    }

    if (list) {
        list = list->next;
        g_free(*listp);
        return list;
    }

    return NULL;
}

static void qapi_dealloc_end_list(Visitor *v, Error **errp)
{
    QapiDeallocVisitor *qov = to_qov(v);
    void *obj = qapi_dealloc_pop(qov);
    assert(obj == NULL); /* should've been list head tracker with no payload */
}

static void qapi_dealloc_type_str(Visitor *v, char **obj, const char *name,
                                  Error **errp)
{
    if (obj) {
        g_free(*obj);
    }
}

static void qapi_dealloc_type_int(Visitor *v, int64_t *obj, const char *name,
                                  Error **errp)
{
}

static void qapi_dealloc_type_bool(Visitor *v, bool *obj, const char *name,
                                   Error **errp)
{
}

static void qapi_dealloc_type_number(Visitor *v, double *obj, const char *name,
                                     Error **errp)
{
}

static void qapi_dealloc_type_size(Visitor *v, uint64_t *obj, const char *name,
                                   Error **errp)
{
}

static void qapi_dealloc_type_enum(Visitor *v, int *obj, const char *strings[],
                                   const char *kind, const char *name,
                                   Error **errp)
{
}

/* If there's no data present, the dealloc visitor has nothing to free.
 * Thus, indicate to visitor code that the subsequent union fields can
 * be skipped. This is not an error condition, since the cleanup of the
 * rest of an object can continue unhindered, so leave errp unset in
 * these cases.
 *
 * NOTE: In cases where we're attempting to deallocate an object that
 * may have missing fields, the field indicating the union type may
 * be missing. In such a case, it's possible we don't have enough
 * information to differentiate data_present == false from a case where
 * data *is* present but happens to be a scalar with a value of 0.
 * This is okay, since in the case of the dealloc visitor there's no
 * work that needs to done in either situation.
 *
 * The current inability in QAPI code to more thoroughly verify a union
 * type in such cases will likely need to be addressed if we wish to
 * implement this interface for other types of visitors in the future,
 * however.
 */
static bool qapi_dealloc_start_union(Visitor *v, bool data_present,
                                     Error **errp)
{
    return data_present;
}

Visitor *qapi_dealloc_get_visitor(QapiDeallocVisitor *v)
{
    return &v->visitor;
}

void qapi_dealloc_visitor_cleanup(QapiDeallocVisitor *v)
{
    g_free(v);
}

QapiDeallocVisitor *qapi_dealloc_visitor_new(void)
{
    QapiDeallocVisitor *v;

    v = g_malloc0(sizeof(*v));

    v->visitor.start_struct = qapi_dealloc_start_struct;
    v->visitor.end_struct = qapi_dealloc_end_struct;
    v->visitor.start_implicit_struct = qapi_dealloc_start_implicit_struct;
    v->visitor.end_implicit_struct = qapi_dealloc_end_implicit_struct;
    v->visitor.start_list = qapi_dealloc_start_list;
    v->visitor.next_list = qapi_dealloc_next_list;
    v->visitor.end_list = qapi_dealloc_end_list;
    v->visitor.type_enum = qapi_dealloc_type_enum;
    v->visitor.type_int = qapi_dealloc_type_int;
    v->visitor.type_bool = qapi_dealloc_type_bool;
    v->visitor.type_str = qapi_dealloc_type_str;
    v->visitor.type_number = qapi_dealloc_type_number;
    v->visitor.type_size = qapi_dealloc_type_size;
    v->visitor.start_union = qapi_dealloc_start_union;

    QTAILQ_INIT(&v->stack);

    return v;
}