xref: /openbmc/qemu/hw/usb/hcd-ohci.h (revision 4713720a)

/*
 * QEMU USB OHCI Emulation
 * Copyright (c) 2004 Gianni Tedesco
 * Copyright (c) 2006 CodeSourcery
 * Copyright (c) 2006 Openedhand Ltd.
 *
 * 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 2.1 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 Lesser General Public
 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
 */

#ifndef HCD_OHCI_H
#define HCD_OHCI_H

#include "hw/sysbus.h"
#include "sysemu/dma.h"
#include "hw/usb.h"
#include "qom/object.h"

/* Number of Downstream Ports on the root hub: */
#define OHCI_MAX_PORTS 15

typedef struct OHCIPort {
    USBPort port;
    uint32_t ctrl;
} OHCIPort;

typedef struct OHCIState OHCIState;

struct OHCIState {
    USBBus bus;
    qemu_irq irq;
    MemoryRegion mem;
    AddressSpace *as;
    uint32_t num_ports;
    const char *name;

    QEMUTimer *eof_timer;
    int64_t sof_time;

    /* OHCI state */
    /* Control partition */
    uint32_t ctl, status;
    uint32_t intr_status;
    uint32_t intr;

    /* memory pointer partition */
    uint32_t hcca;
    uint32_t ctrl_head, ctrl_cur;
    uint32_t bulk_head, bulk_cur;
    uint32_t per_cur;
    uint32_t done;
    int32_t done_count;

    /* Frame counter partition */
    uint16_t fsmps;
    uint8_t fit;
    uint16_t fi;
    uint8_t frt;
    uint16_t frame_number;
    uint16_t padding;
    uint32_t pstart;
    uint32_t lst;

    /* Root Hub partition */
    uint32_t rhdesc_a, rhdesc_b;
    uint32_t rhstatus;
    OHCIPort rhport[OHCI_MAX_PORTS];

    /* PXA27x Non-OHCI events */
    uint32_t hstatus;
    uint32_t hmask;
    uint32_t hreset;
    uint32_t htest;

    /* SM501 local memory offset */
    dma_addr_t localmem_base;

    /* Active packets.  */
    uint32_t old_ctl;
    USBPacket usb_packet;
    uint8_t usb_buf[8192];
    uint32_t async_td;
    bool async_complete;

    void (*ohci_die)(OHCIState *ohci);
};

#define TYPE_SYSBUS_OHCI "sysbus-ohci"
OBJECT_DECLARE_SIMPLE_TYPE(OHCISysBusState, SYSBUS_OHCI)

struct OHCISysBusState {
    /*< private >*/
    SysBusDevice parent_obj;
    /*< public >*/

    OHCIState ohci;
    char *masterbus;
    uint32_t num_ports;
    uint32_t firstport;
    dma_addr_t dma_offset;
};

extern const VMStateDescription vmstate_ohci_state;

void usb_ohci_init(OHCIState *ohci, DeviceState *dev, uint32_t num_ports,
                   dma_addr_t localmem_base, char *masterbus,
                   uint32_t firstport, AddressSpace *as,
                   void (*ohci_die_fn)(OHCIState *), Error **errp);
void ohci_bus_stop(OHCIState *ohci);
void ohci_stop_endpoints(OHCIState *ohci);
void ohci_hard_reset(OHCIState *ohci);
void ohci_sysbus_die(struct OHCIState *ohci);

#endif