Archipelago » qemu

/*

 * QEMU USB API

 *

 * Copyright (c) 2005 Fabrice Bellard

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to deal

 * in the Software without restriction, including without limitation the rights

 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

 * copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL

 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

 * THE SOFTWARE.

 */

#include "block.h"

#include "qdev.h"

#include "qemu-queue.h"

/* Constants related to the USB / PCI interaction */

#define USB_SBRN    0x60 /* Serial Bus Release Number Register */

#define USB_RELEASE_1  0x10 /* USB 1.0 */

#define USB_RELEASE_2  0x20 /* USB 2.0 */

#define USB_RELEASE_3  0x30 /* USB 3.0 */

#define USB_TOKEN_SETUP 0x2d

#define USB_TOKEN_IN    0x69 /* device -> host */

#define USB_TOKEN_OUT   0xe1 /* host -> device */

/* specific usb messages, also sent in the 'pid' parameter */

#define USB_MSG_ATTACH   0x100

#define USB_MSG_DETACH   0x101

#define USB_MSG_RESET    0x102

#define USB_RET_NODEV  (-1)

#define USB_RET_NAK    (-2)

#define USB_RET_STALL  (-3)

#define USB_RET_BABBLE (-4)

#define USB_RET_ASYNC  (-5)

#define USB_SPEED_LOW   0

#define USB_SPEED_FULL  1

#define USB_SPEED_HIGH  2

#define USB_SPEED_SUPER 3

#define USB_SPEED_MASK_LOW   (1 << USB_SPEED_LOW)

#define USB_SPEED_MASK_FULL  (1 << USB_SPEED_FULL)

#define USB_SPEED_MASK_HIGH  (1 << USB_SPEED_HIGH)

#define USB_SPEED_MASK_SUPER (1 << USB_SPEED_SUPER)

#define USB_STATE_NOTATTACHED 0

#define USB_STATE_ATTACHED    1

//#define USB_STATE_POWERED     2

#define USB_STATE_DEFAULT     3

//#define USB_STATE_ADDRESS     4

//#define        USB_STATE_CONFIGURED  5

#define USB_STATE_SUSPENDED   6

#define USB_CLASS_AUDIO                        1

#define USB_CLASS_COMM                        2

#define USB_CLASS_HID                        3

#define USB_CLASS_PHYSICAL                5

#define USB_CLASS_STILL_IMAGE                6

#define USB_CLASS_PRINTER                7

#define USB_CLASS_MASS_STORAGE                8

#define USB_CLASS_HUB                        9

#define USB_CLASS_CDC_DATA                0x0a

#define USB_CLASS_CSCID                        0x0b

#define USB_CLASS_CONTENT_SEC                0x0d

#define USB_CLASS_APP_SPEC                0xfe

#define USB_CLASS_VENDOR_SPEC                0xff

#define USB_DIR_OUT                        0

#define USB_DIR_IN                        0x80

#define USB_TYPE_MASK                        (0x03 << 5)

#define USB_TYPE_STANDARD                (0x00 << 5)

#define USB_TYPE_CLASS                        (0x01 << 5)

#define USB_TYPE_VENDOR                        (0x02 << 5)

#define USB_TYPE_RESERVED                (0x03 << 5)

#define USB_RECIP_MASK                        0x1f

#define USB_RECIP_DEVICE                0x00

#define USB_RECIP_INTERFACE                0x01

#define USB_RECIP_ENDPOINT                0x02

#define USB_RECIP_OTHER                        0x03

#define DeviceRequest ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_DEVICE)<<8)

#define DeviceOutRequest ((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_DEVICE)<<8)

#define InterfaceRequest \

        ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8)

#define InterfaceOutRequest \

        ((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8)

#define EndpointRequest ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_ENDPOINT)<<8)

#define EndpointOutRequest \

        ((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_ENDPOINT)<<8)

#define ClassInterfaceRequest \

        ((USB_DIR_IN|USB_TYPE_CLASS|USB_RECIP_INTERFACE)<<8)

#define ClassInterfaceOutRequest \

        ((USB_DIR_OUT|USB_TYPE_CLASS|USB_RECIP_INTERFACE)<<8)

#define USB_REQ_GET_STATUS                0x00

#define USB_REQ_CLEAR_FEATURE                0x01

#define USB_REQ_SET_FEATURE                0x03

#define USB_REQ_SET_ADDRESS                0x05

#define USB_REQ_GET_DESCRIPTOR                0x06

#define USB_REQ_SET_DESCRIPTOR                0x07

#define USB_REQ_GET_CONFIGURATION        0x08

#define USB_REQ_SET_CONFIGURATION        0x09

#define USB_REQ_GET_INTERFACE                0x0A

#define USB_REQ_SET_INTERFACE                0x0B

#define USB_REQ_SYNCH_FRAME                0x0C

#define USB_DEVICE_SELF_POWERED                0

#define USB_DEVICE_REMOTE_WAKEUP        1

#define USB_DT_DEVICE                        0x01

#define USB_DT_CONFIG                        0x02

#define USB_DT_STRING                        0x03

#define USB_DT_INTERFACE                0x04

#define USB_DT_ENDPOINT                        0x05

#define USB_DT_DEVICE_QUALIFIER         0x06

#define USB_DT_OTHER_SPEED_CONFIG       0x07

#define USB_DT_DEBUG                    0x0A

#define USB_DT_INTERFACE_ASSOC          0x0B

#define USB_ENDPOINT_XFER_CONTROL        0

#define USB_ENDPOINT_XFER_ISOC                1

#define USB_ENDPOINT_XFER_BULK                2

#define USB_ENDPOINT_XFER_INT                3

typedef struct USBBus USBBus;

typedef struct USBBusOps USBBusOps;

typedef struct USBPort USBPort;

typedef struct USBDevice USBDevice;

typedef struct USBDeviceInfo USBDeviceInfo;

typedef struct USBPacket USBPacket;

typedef struct USBDesc USBDesc;

typedef struct USBDescID USBDescID;

typedef struct USBDescDevice USBDescDevice;

typedef struct USBDescConfig USBDescConfig;

typedef struct USBDescIfaceAssoc USBDescIfaceAssoc;

typedef struct USBDescIface USBDescIface;

typedef struct USBDescEndpoint USBDescEndpoint;

typedef struct USBDescOther USBDescOther;

typedef struct USBDescString USBDescString;

struct USBDescString {

    uint8_t index;

    char *str;

    QLIST_ENTRY(USBDescString) next;

};

/* definition of a USB device */

struct USBDevice {

    DeviceState qdev;

    USBDeviceInfo *info;

    USBPort *port;

    char *port_path;

    void *opaque;

    /* Actual connected speed */

    int speed;

    /* Supported speeds, not in info because it may be variable (hostdevs) */

    int speedmask;

    uint8_t addr;

    char product_desc[32];

    int auto_attach;

    int attached;

    int32_t state;

    uint8_t setup_buf[8];

    uint8_t data_buf[4096];

    int32_t remote_wakeup;

    int32_t setup_state;

    int32_t setup_len;

    int32_t setup_index;

    QLIST_HEAD(, USBDescString) strings;

    const USBDescDevice *device;

    const USBDescConfig *config;

};

struct USBDeviceInfo {

    DeviceInfo qdev;

    int (*init)(USBDevice *dev);

    /*

     * Process USB packet.

     * Called by the HC (Host Controller).

     *

     * Returns length of the transaction

     * or one of the USB_RET_XXX codes.

     */

    int (*handle_packet)(USBDevice *dev, USBPacket *p);

    /*

     * Called when a packet is canceled.

     */

    void (*cancel_packet)(USBDevice *dev, USBPacket *p);

    /*

     * Called when device is destroyed.

     */

    void (*handle_destroy)(USBDevice *dev);

    /*

     * Attach the device

     */

    void (*handle_attach)(USBDevice *dev);

    /*

     * Reset the device

     */

    void (*handle_reset)(USBDevice *dev);

    /*

     * Process control request.

     * Called from handle_packet().

     *

     * Returns length or one of the USB_RET_ codes.

     */

    int (*handle_control)(USBDevice *dev, USBPacket *p, int request, int value,

                          int index, int length, uint8_t *data);

    /*

     * Process data transfers (both BULK and ISOC).

     * Called from handle_packet().

     *

     * Returns length or one of the USB_RET_ codes.

     */

    int (*handle_data)(USBDevice *dev, USBPacket *p);

    const char *product_desc;

    const USBDesc *usb_desc;

    /* handle legacy -usbdevice command line options */

    const char *usbdevice_name;

    USBDevice *(*usbdevice_init)(const char *params);

};

typedef struct USBPortOps {

    void (*attach)(USBPort *port);

    void (*detach)(USBPort *port);

    /*

     * This gets called when a device downstream from the device attached to

     * the port (iow attached through a hub) gets detached.

     */

    void (*child_detach)(USBPort *port, USBDevice *child);

    void (*wakeup)(USBPort *port);

    /*

     * Note that port->dev will be different then the device from which

     * the packet originated when a hub is involved, if you want the orginating

     * device use p->owner

     */

    void (*complete)(USBPort *port, USBPacket *p);

} USBPortOps;

/* USB port on which a device can be connected */

struct USBPort {

    USBDevice *dev;

    int speedmask;

    char path[16];

    USBPortOps *ops;

    void *opaque;

    int index; /* internal port index, may be used with the opaque */

    QTAILQ_ENTRY(USBPort) next;

};

typedef void USBCallback(USBPacket * packet, void *opaque);

/* Structure used to hold information about an active USB packet.  */

struct USBPacket {

    /* Data fields for use by the driver.  */

    int pid;

    uint8_t devaddr;

    uint8_t devep;

    QEMUIOVector iov;

    int result; /* transfer length or USB_RET_* status code */

    /* Internal use by the USB layer.  */

    USBDevice *owner;

};

void usb_packet_init(USBPacket *p);

void usb_packet_setup(USBPacket *p, int pid, uint8_t addr, uint8_t ep);

void usb_packet_addbuf(USBPacket *p, void *ptr, size_t len);

int usb_packet_map(USBPacket *p, QEMUSGList *sgl);

void usb_packet_unmap(USBPacket *p);

void usb_packet_copy(USBPacket *p, void *ptr, size_t bytes);

void usb_packet_skip(USBPacket *p, size_t bytes);

void usb_packet_cleanup(USBPacket *p);

int usb_handle_packet(USBDevice *dev, USBPacket *p);

void usb_packet_complete(USBDevice *dev, USBPacket *p);

void usb_cancel_packet(USBPacket * p);

void usb_attach(USBPort *port, USBDevice *dev);

void usb_wakeup(USBDevice *dev);

int usb_generic_handle_packet(USBDevice *s, USBPacket *p);

void usb_generic_async_ctrl_complete(USBDevice *s, USBPacket *p);

int set_usb_string(uint8_t *buf, const char *str);

void usb_send_msg(USBDevice *dev, int msg);

/* usb-linux.c */

USBDevice *usb_host_device_open(const char *devname);

int usb_host_device_close(const char *devname);

void usb_host_info(Monitor *mon);

/* usb-bt.c */

USBDevice *usb_bt_init(HCIInfo *hci);

/* usb ports of the VM */

#define VM_USB_HUB_SIZE 8

/* usb-musb.c */

enum musb_irq_source_e {

    musb_irq_suspend = 0,

    musb_irq_resume,

    musb_irq_rst_babble,

    musb_irq_sof,

    musb_irq_connect,

    musb_irq_disconnect,

    musb_irq_vbus_request,

    musb_irq_vbus_error,

    musb_irq_rx,

    musb_irq_tx,

    musb_set_vbus,

    musb_set_session,

    __musb_irq_max,

};

typedef struct MUSBState MUSBState;

MUSBState *musb_init(qemu_irq *irqs);

uint32_t musb_core_intr_get(MUSBState *s);

void musb_core_intr_clear(MUSBState *s, uint32_t mask);

void musb_set_size(MUSBState *s, int epnum, int size, int is_tx);

/* usb-bus.c */

struct USBBus {

    BusState qbus;

    USBBusOps *ops;

    int busnr;

    int nfree;

    int nused;

    QTAILQ_HEAD(, USBPort) free;

    QTAILQ_HEAD(, USBPort) used;

    QTAILQ_ENTRY(USBBus) next;

};

struct USBBusOps {

    int (*register_companion)(USBBus *bus, USBPort *ports[],

                              uint32_t portcount, uint32_t firstport);

};

void usb_bus_new(USBBus *bus, USBBusOps *ops, DeviceState *host);

USBBus *usb_bus_find(int busnr);

void usb_qdev_register(USBDeviceInfo *info);

void usb_qdev_register_many(USBDeviceInfo *info);

USBDevice *usb_create(USBBus *bus, const char *name);

USBDevice *usb_create_simple(USBBus *bus, const char *name);

USBDevice *usbdevice_create(const char *cmdline);

void usb_register_port(USBBus *bus, USBPort *port, void *opaque, int index,

                       USBPortOps *ops, int speedmask);

int usb_register_companion(const char *masterbus, USBPort *ports[],

                           uint32_t portcount, uint32_t firstport,

                           void *opaque, USBPortOps *ops, int speedmask);

void usb_port_location(USBPort *downstream, USBPort *upstream, int portnr);

void usb_unregister_port(USBBus *bus, USBPort *port);

int usb_device_attach(USBDevice *dev);

int usb_device_detach(USBDevice *dev);

int usb_device_delete_addr(int busnr, int addr);

static inline USBBus *usb_bus_from_device(USBDevice *d)

{

    return DO_UPCAST(USBBus, qbus, d->qdev.parent_bus);

}