usb: the big rename

Reorganize usb source files.  Create a new hw/usb/ directory and move
all usb source code to that place.  Also make filenames a bit more
descriptive.  Host adapters are prefixed with "hch-" now, usb device
emulations are prefixed with "dev-".  Fixup paths Makefile and include
paths to make it compile.  No code changes.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

1 files changed, 1365 insertions, 0 deletions

diff --git a/hw/usb/dev-smartcard-reader.c b/hw/usb/dev-smartcard-reader.c
new file mode 100644
index 0000000000..8e66675d86
--- /dev/null
+++ b/hw/usb/dev-smartcard-reader.c
@@ -0,0 +1,1365 @@
+/*
+ * Copyright (C) 2011 Red Hat, Inc.
+ *
+ * CCID Device emulation
+ *
+ * Written by Alon Levy, with contributions from Robert Relyea.
+ *
+ * Based on usb-serial.c, see its copyright and attributions below.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2.1 or later.
+ * See the COPYING file in the top-level directory.
+ * ------- (original copyright & attribution for usb-serial.c below) --------
+ * Copyright (c) 2006 CodeSourcery.
+ * Copyright (c) 2008 Samuel Thibault <samuel.thibault@ens-lyon.org>
+ * Written by Paul Brook, reused for FTDI by Samuel Thibault,
+ */
+
+/*
+ * References:
+ *
+ * CCID Specification Revision 1.1 April 22nd 2005
+ *  "Universal Serial Bus, Device Class: Smart Card"
+ *  Specification for Integrated Circuit(s) Cards Interface Devices
+ *
+ * Endianness note: from the spec (1.3)
+ *  "Fields that are larger than a byte are stored in little endian"
+ *
+ * KNOWN BUGS
+ * 1. remove/insert can sometimes result in removed state instead of inserted.
+ * This is a result of the following:
+ *  symptom: dmesg shows ERMOTEIO (-121), pcscd shows -99. This can happen
+ *  when a short packet is sent, as seen in uhci-usb.c, resulting from a urb
+ *  from the guest requesting SPD and us returning a smaller packet.
+ *  Not sure which messages trigger this.
+ */
+
+#include "qemu-common.h"
+#include "qemu-error.h"
+#include "hw/usb.h"
+#include "hw/usb/desc.h"
+#include "monitor.h"
+
+#include "hw/ccid.h"
+
+#define DPRINTF(s, lvl, fmt, ...) \
+do { \
+    if (lvl <= s->debug) { \
+        printf("usb-ccid: " fmt , ## __VA_ARGS__); \
+    } \
+} while (0)
+
+#define D_WARN 1
+#define D_INFO 2
+#define D_MORE_INFO 3
+#define D_VERBOSE 4
+
+#define CCID_DEV_NAME "usb-ccid"
+
+/*
+ * The two options for variable sized buffers:
+ * make them constant size, for large enough constant,
+ * or handle the migration complexity - VMState doesn't handle this case.
+ * sizes are expected never to be exceeded, unless guest misbehaves.
+ */
+#define BULK_OUT_DATA_SIZE 65536
+#define PENDING_ANSWERS_NUM 128
+
+#define BULK_IN_BUF_SIZE 384
+#define BULK_IN_PENDING_NUM 8
+
+#define InterfaceOutClass \
+    ((USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE)<<8)
+
+#define InterfaceInClass  \
+    ((USB_DIR_IN  | USB_TYPE_CLASS | USB_RECIP_INTERFACE)<<8)
+
+#define CCID_MAX_PACKET_SIZE                64
+
+#define CCID_CONTROL_ABORT                  0x1
+#define CCID_CONTROL_GET_CLOCK_FREQUENCIES  0x2
+#define CCID_CONTROL_GET_DATA_RATES         0x3
+
+#define CCID_PRODUCT_DESCRIPTION        "QEMU USB CCID"
+#define CCID_VENDOR_DESCRIPTION         "QEMU " QEMU_VERSION
+#define CCID_INTERFACE_NAME             "CCID Interface"
+#define CCID_SERIAL_NUMBER_STRING       "1"
+/*
+ * Using Gemplus Vendor and Product id
+ * Effect on various drivers:
+ *  usbccid.sys (winxp, others untested) is a class driver so it doesn't care.
+ *  linux has a number of class drivers, but openct filters based on
+ *   vendor/product (/etc/openct.conf under fedora), hence Gemplus.
+ */
+#define CCID_VENDOR_ID                  0x08e6
+#define CCID_PRODUCT_ID                 0x4433
+#define CCID_DEVICE_VERSION             0x0000
+
+/*
+ * BULK_OUT messages from PC to Reader
+ * Defined in CCID Rev 1.1 6.1 (page 26)
+ */
+#define CCID_MESSAGE_TYPE_PC_to_RDR_IccPowerOn              0x62
+#define CCID_MESSAGE_TYPE_PC_to_RDR_IccPowerOff             0x63
+#define CCID_MESSAGE_TYPE_PC_to_RDR_GetSlotStatus           0x65
+#define CCID_MESSAGE_TYPE_PC_to_RDR_XfrBlock                0x6f
+#define CCID_MESSAGE_TYPE_PC_to_RDR_GetParameters           0x6c
+#define CCID_MESSAGE_TYPE_PC_to_RDR_ResetParameters         0x6d
+#define CCID_MESSAGE_TYPE_PC_to_RDR_SetParameters           0x61
+#define CCID_MESSAGE_TYPE_PC_to_RDR_Escape                  0x6b
+#define CCID_MESSAGE_TYPE_PC_to_RDR_IccClock                0x6e
+#define CCID_MESSAGE_TYPE_PC_to_RDR_T0APDU                  0x6a
+#define CCID_MESSAGE_TYPE_PC_to_RDR_Secure                  0x69
+#define CCID_MESSAGE_TYPE_PC_to_RDR_Mechanical              0x71
+#define CCID_MESSAGE_TYPE_PC_to_RDR_Abort                   0x72
+#define CCID_MESSAGE_TYPE_PC_to_RDR_SetDataRateAndClockFrequency 0x73
+
+/*
+ * BULK_IN messages from Reader to PC
+ * Defined in CCID Rev 1.1 6.2 (page 48)
+ */
+#define CCID_MESSAGE_TYPE_RDR_to_PC_DataBlock               0x80
+#define CCID_MESSAGE_TYPE_RDR_to_PC_SlotStatus              0x81
+#define CCID_MESSAGE_TYPE_RDR_to_PC_Parameters              0x82
+#define CCID_MESSAGE_TYPE_RDR_to_PC_Escape                  0x83
+#define CCID_MESSAGE_TYPE_RDR_to_PC_DataRateAndClockFrequency 0x84
+
+/*
+ * INTERRUPT_IN messages from Reader to PC
+ * Defined in CCID Rev 1.1 6.3 (page 56)
+ */
+#define CCID_MESSAGE_TYPE_RDR_to_PC_NotifySlotChange        0x50
+#define CCID_MESSAGE_TYPE_RDR_to_PC_HardwareError           0x51
+
+/*
+ * Endpoints for CCID - addresses are up to us to decide.
+ * To support slot insertion and removal we must have an interrupt in ep
+ * in addition we need a bulk in and bulk out ep
+ * 5.2, page 20
+ */
+#define CCID_INT_IN_EP       1
+#define CCID_BULK_IN_EP      2
+#define CCID_BULK_OUT_EP     3
+
+/* bmSlotICCState masks */
+#define SLOT_0_STATE_MASK    1
+#define SLOT_0_CHANGED_MASK  2
+
+/* Status codes that go in bStatus (see 6.2.6) */
+enum {
+    ICC_STATUS_PRESENT_ACTIVE = 0,
+    ICC_STATUS_PRESENT_INACTIVE,
+    ICC_STATUS_NOT_PRESENT
+};
+
+enum {
+    COMMAND_STATUS_NO_ERROR = 0,
+    COMMAND_STATUS_FAILED,
+    COMMAND_STATUS_TIME_EXTENSION_REQUIRED
+};
+
+/* Error codes that go in bError (see 6.2.6) */
+enum {
+    ERROR_CMD_NOT_SUPPORTED = 0,
+    ERROR_CMD_ABORTED       = -1,
+    ERROR_ICC_MUTE          = -2,
+    ERROR_XFR_PARITY_ERROR  = -3,
+    ERROR_XFR_OVERRUN       = -4,
+    ERROR_HW_ERROR          = -5,
+};
+
+/* 6.2.6 RDR_to_PC_SlotStatus definitions */
+enum {
+    CLOCK_STATUS_RUNNING = 0,
+    /*
+     * 0 - Clock Running, 1 - Clock stopped in State L, 2 - H,
+     * 3 - unknown state. rest are RFU
+     */
+};
+
+typedef struct QEMU_PACKED CCID_Header {
+    uint8_t     bMessageType;
+    uint32_t    dwLength;
+    uint8_t     bSlot;
+    uint8_t     bSeq;
+} CCID_Header;
+
+typedef struct QEMU_PACKED CCID_BULK_IN {
+    CCID_Header hdr;
+    uint8_t     bStatus;        /* Only used in BULK_IN */
+    uint8_t     bError;         /* Only used in BULK_IN */
+} CCID_BULK_IN;
+
+typedef struct QEMU_PACKED CCID_SlotStatus {
+    CCID_BULK_IN b;
+    uint8_t     bClockStatus;
+} CCID_SlotStatus;
+
+typedef struct QEMU_PACKED CCID_Parameter {
+    CCID_BULK_IN b;
+    uint8_t     bProtocolNum;
+    uint8_t     abProtocolDataStructure[0];
+} CCID_Parameter;
+
+typedef struct QEMU_PACKED CCID_DataBlock {
+    CCID_BULK_IN b;
+    uint8_t      bChainParameter;
+    uint8_t      abData[0];
+} CCID_DataBlock;
+
+/* 6.1.4 PC_to_RDR_XfrBlock */
+typedef struct QEMU_PACKED CCID_XferBlock {
+    CCID_Header  hdr;
+    uint8_t      bBWI; /* Block Waiting Timeout */
+    uint16_t     wLevelParameter; /* XXX currently unused */
+    uint8_t      abData[0];
+} CCID_XferBlock;
+
+typedef struct QEMU_PACKED CCID_IccPowerOn {
+    CCID_Header hdr;
+    uint8_t     bPowerSelect;
+    uint16_t    abRFU;
+} CCID_IccPowerOn;
+
+typedef struct QEMU_PACKED CCID_IccPowerOff {
+    CCID_Header hdr;
+    uint16_t    abRFU;
+} CCID_IccPowerOff;
+
+typedef struct QEMU_PACKED CCID_SetParameters {
+    CCID_Header hdr;
+    uint8_t     bProtocolNum;
+    uint16_t   abRFU;
+    uint8_t    abProtocolDataStructure[0];
+} CCID_SetParameters;
+
+typedef struct CCID_Notify_Slot_Change {
+    uint8_t     bMessageType; /* CCID_MESSAGE_TYPE_RDR_to_PC_NotifySlotChange */
+    uint8_t     bmSlotICCState;
+} CCID_Notify_Slot_Change;
+
+/* used for DataBlock response to XferBlock */
+typedef struct Answer {
+    uint8_t slot;
+    uint8_t seq;
+} Answer;
+
+/* pending BULK_IN messages */
+typedef struct BulkIn {
+    uint8_t  data[BULK_IN_BUF_SIZE];
+    uint32_t len;
+    uint32_t pos;
+} BulkIn;
+
+enum {
+    MIGRATION_NONE,
+    MIGRATION_MIGRATED,
+};
+
+typedef struct CCIDBus {
+    BusState qbus;
+} CCIDBus;
+
+#define MAX_PROTOCOL_SIZE   7
+
+/*
+ * powered - defaults to true, changed by PowerOn/PowerOff messages
+ */
+typedef struct USBCCIDState {
+    USBDevice dev;
+    USBEndpoint *intr;
+    CCIDBus bus;
+    CCIDCardState *card;
+    BulkIn bulk_in_pending[BULK_IN_PENDING_NUM]; /* circular */
+    uint32_t bulk_in_pending_start;
+    uint32_t bulk_in_pending_end; /* first free */
+    uint32_t bulk_in_pending_num;
+    BulkIn *current_bulk_in;
+    uint8_t  bulk_out_data[BULK_OUT_DATA_SIZE];
+    uint32_t bulk_out_pos;
+    uint64_t last_answer_error;
+    Answer pending_answers[PENDING_ANSWERS_NUM];
+    uint32_t pending_answers_start;
+    uint32_t pending_answers_end;
+    uint32_t pending_answers_num;
+    uint8_t  bError;
+    uint8_t  bmCommandStatus;
+    uint8_t  bProtocolNum;
+    uint8_t  abProtocolDataStructure[MAX_PROTOCOL_SIZE];
+    uint32_t ulProtocolDataStructureSize;
+    uint32_t state_vmstate;
+    uint32_t migration_target_ip;
+    uint16_t migration_target_port;
+    uint8_t  migration_state;
+    uint8_t  bmSlotICCState;
+    uint8_t  powered;
+    uint8_t  notify_slot_change;
+    uint8_t  debug;
+} USBCCIDState;
+
+/*
+ * CCID Spec chapter 4: CCID uses a standard device descriptor per Chapter 9,
+ * "USB Device Framework", section 9.6.1, in the Universal Serial Bus
+ * Specification.
+ *
+ * This device implemented based on the spec and with an Athena Smart Card
+ * Reader as reference:
+ *   0dc3:1004 Athena Smartcard Solutions, Inc.
+ */
+
+static const uint8_t qemu_ccid_descriptor[] = {
+        /* Smart Card Device Class Descriptor */
+        0x36,       /* u8  bLength; */
+        0x21,       /* u8  bDescriptorType; Functional */
+        0x10, 0x01, /* u16 bcdCCID; CCID Specification Release Number. */
+        0x00,       /*
+                     * u8  bMaxSlotIndex; The index of the highest available
+                     * slot on this device. All slots are consecutive starting
+                     * at 00h.
+                     */
+        0x07,       /* u8  bVoltageSupport; 01h - 5.0v, 02h - 3.0, 03 - 1.8 */
+
+        0x03, 0x00, /* u32 dwProtocols; RRRR PPPP. RRRR = 0000h.*/
+        0x00, 0x00, /* PPPP: 0001h = Protocol T=0, 0002h = Protocol T=1 */
+                    /* u32 dwDefaultClock; in kHZ (0x0fa0 is 4 MHz) */
+        0xa0, 0x0f, 0x00, 0x00,
+                    /* u32 dwMaximumClock; */
+        0x00, 0x00, 0x01, 0x00,
+        0x00,       /* u8 bNumClockSupported;                 *
+                     *    0 means just the default and max.   */
+                    /* u32 dwDataRate ;bps. 9600 == 00002580h */
+        0x80, 0x25, 0x00, 0x00,
+                    /* u32 dwMaxDataRate ; 11520 bps == 0001C200h */
+        0x00, 0xC2, 0x01, 0x00,
+        0x00,       /* u8  bNumDataRatesSupported; 00 means all rates between
+                     *     default and max */
+                    /* u32 dwMaxIFSD;                                  *
+                     *     maximum IFSD supported by CCID for protocol *
+                     *     T=1 (Maximum seen from various cards)       */
+        0xfe, 0x00, 0x00, 0x00,
+                    /* u32 dwSyncProtocols; 1 - 2-wire, 2 - 3-wire, 4 - I2C */
+        0x00, 0x00, 0x00, 0x00,
+                    /* u32 dwMechanical;  0 - no special characteristics. */
+        0x00, 0x00, 0x00, 0x00,
+                    /*
+                     * u32 dwFeatures;
+                     * 0 - No special characteristics
+                     * + 2 Automatic parameter configuration based on ATR data
+                     * + 4 Automatic activation of ICC on inserting
+                     * + 8 Automatic ICC voltage selection
+                     * + 10 Automatic ICC clock frequency change
+                     * + 20 Automatic baud rate change
+                     * + 40 Automatic parameters negotiation made by the CCID
+                     * + 80 automatic PPS made by the CCID
+                     * 100 CCID can set ICC in clock stop mode
+                     * 200 NAD value other then 00 accepted (T=1 protocol)
+                     * + 400 Automatic IFSD exchange as first exchange (T=1)
+                     * One of the following only:
+                     * + 10000 TPDU level exchanges with CCID
+                     * 20000 Short APDU level exchange with CCID
+                     * 40000 Short and Extended APDU level exchange with CCID
+                     *
+                     * + 100000 USB Wake up signaling supported on card
+                     * insertion and removal. Must set bit 5 in bmAttributes
+                     * in Configuration descriptor if 100000 is set.
+                     */
+        0xfe, 0x04, 0x11, 0x00,
+                    /*
+                     * u32 dwMaxCCIDMessageLength; For extended APDU in
+                     * [261 + 10 , 65544 + 10]. Otherwise the minimum is
+                     * wMaxPacketSize of the Bulk-OUT endpoint
+                     */
+        0x12, 0x00, 0x01, 0x00,
+        0xFF,       /*
+                     * u8  bClassGetResponse; Significant only for CCID that
+                     * offers an APDU level for exchanges. Indicates the
+                     * default class value used by the CCID when it sends a
+                     * Get Response command to perform the transportation of
+                     * an APDU by T=0 protocol
+                     * FFh indicates that the CCID echos the class of the APDU.
+                     */
+        0xFF,       /*
+                     * u8  bClassEnvelope; EAPDU only. Envelope command for
+                     * T=0
+                     */
+        0x00, 0x00, /*
+                     * u16 wLcdLayout; XXYY Number of lines (XX) and chars per
+                     * line for LCD display used for PIN entry. 0000 - no LCD
+                     */
+        0x01,       /*
+                     * u8  bPINSupport; 01h PIN Verification,
+                     *                  02h PIN Modification
+                     */
+        0x01,       /* u8  bMaxCCIDBusySlots; */
+};
+
+enum {
+    STR_MANUFACTURER = 1,
+    STR_PRODUCT,
+    STR_SERIALNUMBER,
+    STR_INTERFACE,
+};
+
+static const USBDescStrings desc_strings = {
+    [STR_MANUFACTURER]  = "QEMU " QEMU_VERSION,
+    [STR_PRODUCT]       = "QEMU USB CCID",
+    [STR_SERIALNUMBER]  = "1",
+    [STR_INTERFACE]     = "CCID Interface",
+};
+
+static const USBDescIface desc_iface0 = {
+    .bInterfaceNumber              = 0,
+    .bNumEndpoints                 = 3,
+    .bInterfaceClass               = 0x0b,
+    .bInterfaceSubClass            = 0x00,
+    .bInterfaceProtocol            = 0x00,
+    .iInterface                    = STR_INTERFACE,
+    .ndesc                         = 1,
+    .descs = (USBDescOther[]) {
+        {
+            /* smartcard descriptor */
+            .data = qemu_ccid_descriptor,
+        },
+    },
+    .eps = (USBDescEndpoint[]) {
+        {
+            .bEndpointAddress      = USB_DIR_IN | CCID_INT_IN_EP,
+            .bmAttributes          = USB_ENDPOINT_XFER_INT,
+            .bInterval             = 255,
+            .wMaxPacketSize        = 64,
+        },{
+            .bEndpointAddress      = USB_DIR_IN | CCID_BULK_IN_EP,
+            .bmAttributes          = USB_ENDPOINT_XFER_BULK,
+            .wMaxPacketSize        = 64,
+        },{
+            .bEndpointAddress      = USB_DIR_OUT | CCID_BULK_OUT_EP,
+            .bmAttributes          = USB_ENDPOINT_XFER_BULK,
+            .wMaxPacketSize        = 64,
+        },
+    }
+};
+
+static const USBDescDevice desc_device = {
+    .bcdUSB                        = 0x0110,
+    .bMaxPacketSize0               = 64,
+    .bNumConfigurations            = 1,
+    .confs = (USBDescConfig[]) {
+        {
+            .bNumInterfaces        = 1,
+            .bConfigurationValue   = 1,
+            .bmAttributes          = 0xe0,
+            .bMaxPower             = 50,
+            .nif = 1,
+            .ifs = &desc_iface0,
+        },
+    },
+};
+
+static const USBDesc desc_ccid = {
+    .id = {
+        .idVendor          = CCID_VENDOR_ID,
+        .idProduct         = CCID_PRODUCT_ID,
+        .bcdDevice         = CCID_DEVICE_VERSION,
+        .iManufacturer     = STR_MANUFACTURER,
+        .iProduct          = STR_PRODUCT,
+        .iSerialNumber     = STR_SERIALNUMBER,
+    },
+    .full = &desc_device,
+    .str  = desc_strings,
+};
+
+static const uint8_t *ccid_card_get_atr(CCIDCardState *card, uint32_t *len)
+{
+    CCIDCardClass *cc = CCID_CARD_GET_CLASS(card);
+    if (cc->get_atr) {
+        return cc->get_atr(card, len);
+    }
+    return NULL;
+}
+
+static void ccid_card_apdu_from_guest(CCIDCardState *card,
+                                      const uint8_t *apdu,
+                                      uint32_t len)
+{
+    CCIDCardClass *cc = CCID_CARD_GET_CLASS(card);
+    if (cc->apdu_from_guest) {
+        cc->apdu_from_guest(card, apdu, len);
+    }
+}
+
+static int ccid_card_exitfn(CCIDCardState *card)
+{
+    CCIDCardClass *cc = CCID_CARD_GET_CLASS(card);
+    if (cc->exitfn) {
+        return cc->exitfn(card);
+    }
+    return 0;
+}
+
+static int ccid_card_initfn(CCIDCardState *card)
+{
+    CCIDCardClass *cc = CCID_CARD_GET_CLASS(card);
+    if (cc->initfn) {
+        return cc->initfn(card);
+    }
+    return 0;
+}
+
+static bool ccid_has_pending_answers(USBCCIDState *s)
+{
+    return s->pending_answers_num > 0;
+}
+
+static void ccid_clear_pending_answers(USBCCIDState *s)
+{
+    s->pending_answers_num = 0;
+    s->pending_answers_start = 0;
+    s->pending_answers_end = 0;
+}
+
+static void ccid_print_pending_answers(USBCCIDState *s)
+{
+    Answer *answer;
+    int i, count;
+
+    DPRINTF(s, D_VERBOSE, "usb-ccid: pending answers:");
+    if (!ccid_has_pending_answers(s)) {
+        DPRINTF(s, D_VERBOSE, " empty\n");
+        return;
+    }
+    for (i = s->pending_answers_start, count = s->pending_answers_num ;
+         count > 0; count--, i++) {
+        answer = &s->pending_answers[i % PENDING_ANSWERS_NUM];
+        if (count == 1) {
+            DPRINTF(s, D_VERBOSE, "%d:%d\n", answer->slot, answer->seq);
+        } else {
+            DPRINTF(s, D_VERBOSE, "%d:%d,", answer->slot, answer->seq);
+        }
+    }
+}
+
+static void ccid_add_pending_answer(USBCCIDState *s, CCID_Header *hdr)
+{
+    Answer *answer;
+
+    assert(s->pending_answers_num < PENDING_ANSWERS_NUM);
+    s->pending_answers_num++;
+    answer =
+        &s->pending_answers[(s->pending_answers_end++) % PENDING_ANSWERS_NUM];
+    answer->slot = hdr->bSlot;
+    answer->seq = hdr->bSeq;
+    ccid_print_pending_answers(s);
+}
+
+static void ccid_remove_pending_answer(USBCCIDState *s,
+    uint8_t *slot, uint8_t *seq)
+{
+    Answer *answer;
+
+    assert(s->pending_answers_num > 0);
+    s->pending_answers_num--;
+    answer =
+        &s->pending_answers[(s->pending_answers_start++) % PENDING_ANSWERS_NUM];
+    *slot = answer->slot;
+    *seq = answer->seq;
+    ccid_print_pending_answers(s);
+}
+
+static void ccid_bulk_in_clear(USBCCIDState *s)
+{
+    s->bulk_in_pending_start = 0;
+    s->bulk_in_pending_end = 0;
+    s->bulk_in_pending_num = 0;
+}
+
+static void ccid_bulk_in_release(USBCCIDState *s)
+{
+    assert(s->current_bulk_in != NULL);
+    s->current_bulk_in->pos = 0;
+    s->current_bulk_in = NULL;
+}
+
+static void ccid_bulk_in_get(USBCCIDState *s)
+{
+    if (s->current_bulk_in != NULL || s->bulk_in_pending_num == 0) {
+        return;
+    }
+    assert(s->bulk_in_pending_num > 0);
+    s->bulk_in_pending_num--;
+    s->current_bulk_in =
+        &s->bulk_in_pending[(s->bulk_in_pending_start++) % BULK_IN_PENDING_NUM];
+}
+
+static void *ccid_reserve_recv_buf(USBCCIDState *s, uint16_t len)
+{
+    BulkIn *bulk_in;
+
+    DPRINTF(s, D_VERBOSE, "%s: QUEUE: reserve %d bytes\n", __func__, len);
+
+    /* look for an existing element */
+    if (len > BULK_IN_BUF_SIZE) {
+        DPRINTF(s, D_WARN, "usb-ccid.c: %s: len larger then max (%d>%d). "
+                           "discarding message.\n",
+                           __func__, len, BULK_IN_BUF_SIZE);
+        return NULL;
+    }
+    if (s->bulk_in_pending_num >= BULK_IN_PENDING_NUM) {
+        DPRINTF(s, D_WARN, "usb-ccid.c: %s: No free bulk_in buffers. "
+                           "discarding message.\n", __func__);
+        return NULL;
+    }
+    bulk_in =
+        &s->bulk_in_pending[(s->bulk_in_pending_end++) % BULK_IN_PENDING_NUM];
+    s->bulk_in_pending_num++;
+    bulk_in->len = len;
+    return bulk_in->data;
+}
+
+static void ccid_reset(USBCCIDState *s)
+{
+    ccid_bulk_in_clear(s);
+    ccid_clear_pending_answers(s);
+}
+
+static void ccid_detach(USBCCIDState *s)
+{
+    ccid_reset(s);
+}
+
+static void ccid_handle_reset(USBDevice *dev)
+{
+    USBCCIDState *s = DO_UPCAST(USBCCIDState, dev, dev);
+
+    DPRINTF(s, 1, "Reset\n");
+
+    ccid_reset(s);
+}
+
+static int ccid_handle_control(USBDevice *dev, USBPacket *p, int request,
+                               int value, int index, int length, uint8_t *data)
+{
+    USBCCIDState *s = DO_UPCAST(USBCCIDState, dev, dev);
+    int ret = 0;
+
+    DPRINTF(s, 1, "got control %x, value %x\n", request, value);
+    ret = usb_desc_handle_control(dev, p, request, value, index, length, data);
+    if (ret >= 0) {
+        return ret;
+    }
+
+    switch (request) {
+        /* Class specific requests.  */
+    case InterfaceOutClass | CCID_CONTROL_ABORT:
+        DPRINTF(s, 1, "ccid_control abort UNIMPLEMENTED\n");
+        ret = USB_RET_STALL;
+        break;
+    case InterfaceInClass | CCID_CONTROL_GET_CLOCK_FREQUENCIES:
+        DPRINTF(s, 1, "ccid_control get clock frequencies UNIMPLEMENTED\n");
+        ret = USB_RET_STALL;
+        break;
+    case InterfaceInClass | CCID_CONTROL_GET_DATA_RATES:
+        DPRINTF(s, 1, "ccid_control get data rates UNIMPLEMENTED\n");
+        ret = USB_RET_STALL;
+        break;
+    default:
+        DPRINTF(s, 1, "got unsupported/bogus control %x, value %x\n",
+                request, value);
+        ret = USB_RET_STALL;
+        break;
+    }
+    return ret;
+}
+
+static bool ccid_card_inserted(USBCCIDState *s)
+{
+    return s->bmSlotICCState & SLOT_0_STATE_MASK;
+}
+
+static uint8_t ccid_card_status(USBCCIDState *s)
+{
+    return ccid_card_inserted(s)
+            ? (s->powered ?
+                ICC_STATUS_PRESENT_ACTIVE
+              : ICC_STATUS_PRESENT_INACTIVE
+              )
+            : ICC_STATUS_NOT_PRESENT;
+}
+
+static uint8_t ccid_calc_status(USBCCIDState *s)
+{
+    /*
+     * page 55, 6.2.6, calculation of bStatus from bmICCStatus and
+     * bmCommandStatus
+     */
+    uint8_t ret = ccid_card_status(s) | (s->bmCommandStatus << 6);
+    DPRINTF(s, D_VERBOSE, "status = %d\n", ret);
+    return ret;
+}
+
+static void ccid_reset_error_status(USBCCIDState *s)
+{
+    s->bError = ERROR_CMD_NOT_SUPPORTED;
+    s->bmCommandStatus = COMMAND_STATUS_NO_ERROR;
+}
+
+static void ccid_write_slot_status(USBCCIDState *s, CCID_Header *recv)
+{
+    CCID_SlotStatus *h = ccid_reserve_recv_buf(s, sizeof(CCID_SlotStatus));
+    if (h == NULL) {
+        return;
+    }
+    h->b.hdr.bMessageType = CCID_MESSAGE_TYPE_RDR_to_PC_SlotStatus;
+    h->b.hdr.dwLength = 0;
+    h->b.hdr.bSlot = recv->bSlot;
+    h->b.hdr.bSeq = recv->bSeq;
+    h->b.bStatus = ccid_calc_status(s);
+    h->b.bError = s->bError;
+    h->bClockStatus = CLOCK_STATUS_RUNNING;
+    ccid_reset_error_status(s);
+}
+
+static void ccid_write_parameters(USBCCIDState *s, CCID_Header *recv)
+{
+    CCID_Parameter *h;
+    uint32_t len = s->ulProtocolDataStructureSize;
+
+    h = ccid_reserve_recv_buf(s, sizeof(CCID_Parameter) + len);
+    if (h == NULL) {
+        return;
+    }
+    h->b.hdr.bMessageType = CCID_MESSAGE_TYPE_RDR_to_PC_Parameters;
+    h->b.hdr.dwLength = 0;
+    h->b.hdr.bSlot = recv->bSlot;
+    h->b.hdr.bSeq = recv->bSeq;
+    h->b.bStatus = ccid_calc_status(s);
+    h->b.bError = s->bError;
+    h->bProtocolNum = s->bProtocolNum;
+    memcpy(h->abProtocolDataStructure, s->abProtocolDataStructure, len);
+    ccid_reset_error_status(s);
+}
+
+static void ccid_write_data_block(USBCCIDState *s, uint8_t slot, uint8_t seq,
+                                  const uint8_t *data, uint32_t len)
+{
+    CCID_DataBlock *p = ccid_reserve_recv_buf(s, sizeof(*p) + len);
+
+    if (p == NULL) {
+        return;
+    }
+    p->b.hdr.bMessageType = CCID_MESSAGE_TYPE_RDR_to_PC_DataBlock;
+    p->b.hdr.dwLength = cpu_to_le32(len);
+    p->b.hdr.bSlot = slot;
+    p->b.hdr.bSeq = seq;
+    p->b.bStatus = ccid_calc_status(s);
+    p->b.bError = s->bError;
+    if (p->b.bError) {
+        DPRINTF(s, D_VERBOSE, "error %d", p->b.bError);
+    }
+    memcpy(p->abData, data, len);
+    ccid_reset_error_status(s);
+}
+
+static void ccid_write_data_block_answer(USBCCIDState *s,
+    const uint8_t *data, uint32_t len)
+{
+    uint8_t seq;
+    uint8_t slot;
+
+    if (!ccid_has_pending_answers(s)) {
+        abort();
+    }
+    ccid_remove_pending_answer(s, &slot, &seq);
+    ccid_write_data_block(s, slot, seq, data, len);
+}
+
+static void ccid_write_data_block_atr(USBCCIDState *s, CCID_Header *recv)
+{
+    const uint8_t *atr = NULL;
+    uint32_t len = 0;
+
+    if (s->card) {
+        atr = ccid_card_get_atr(s->card, &len);
+    }
+    ccid_write_data_block(s, recv->bSlot, recv->bSeq, atr, len);
+}
+
+static void ccid_set_parameters(USBCCIDState *s, CCID_Header *recv)
+{
+    CCID_SetParameters *ph = (CCID_SetParameters *) recv;
+    uint32_t len = 0;
+    if ((ph->bProtocolNum & 3) == 0) {
+        len = 5;
+    }
+    if ((ph->bProtocolNum & 3) == 1) {
+        len = 7;
+    }
+    if (len == 0) {
+        s->bmCommandStatus = COMMAND_STATUS_FAILED;
+        s->bError = 7; /* Protocol invalid or not supported */
+        return;
+    }
+    s->bProtocolNum = ph->bProtocolNum;
+    memcpy(s->abProtocolDataStructure, ph->abProtocolDataStructure, len);
+    s->ulProtocolDataStructureSize = len;
+    DPRINTF(s, 1, "%s: using len %d\n", __func__, len);
+}
+
+/*
+ * must be 5 bytes for T=0, 7 bytes for T=1
+ * See page 52
+ */
+static const uint8_t abDefaultProtocolDataStructure[7] = {
+    0x77, 0x00, 0x00, 0x00, 0x00, 0xfe /*IFSC*/, 0x00 /*NAD*/ };
+
+static void ccid_reset_parameters(USBCCIDState *s)
+{
+   uint32_t len = sizeof(abDefaultProtocolDataStructure);
+
+   s->bProtocolNum = 1; /* T=1 */
+   s->ulProtocolDataStructureSize = len;
+   memcpy(s->abProtocolDataStructure, abDefaultProtocolDataStructure, len);
+}
+
+static void ccid_report_error_failed(USBCCIDState *s, uint8_t error)
+{
+    s->bmCommandStatus = COMMAND_STATUS_FAILED;
+    s->bError = error;
+}
+
+/* NOTE: only a single slot is supported (SLOT_0) */
+static void ccid_on_slot_change(USBCCIDState *s, bool full)
+{
+    /* RDR_to_PC_NotifySlotChange, 6.3.1 page 56 */
+    uint8_t current = s->bmSlotICCState;
+    if (full) {
+        s->bmSlotICCState |= SLOT_0_STATE_MASK;
+    } else {
+        s->bmSlotICCState &= ~SLOT_0_STATE_MASK;
+    }
+    if (current != s->bmSlotICCState) {
+        s->bmSlotICCState |= SLOT_0_CHANGED_MASK;
+    }
+    s->notify_slot_change = true;
+    usb_wakeup(s->intr);
+}
+
+static void ccid_write_data_block_error(
+    USBCCIDState *s, uint8_t slot, uint8_t seq)
+{
+    ccid_write_data_block(s, slot, seq, NULL, 0);
+}
+
+static void ccid_on_apdu_from_guest(USBCCIDState *s, CCID_XferBlock *recv)
+{
+    uint32_t len;
+
+    if (ccid_card_status(s) != ICC_STATUS_PRESENT_ACTIVE) {
+        DPRINTF(s, 1,
+                "usb-ccid: not sending apdu to client, no card connected\n");
+        ccid_write_data_block_error(s, recv->hdr.bSlot, recv->hdr.bSeq);
+        return;
+    }
+    len = le32_to_cpu(recv->hdr.dwLength);
+    DPRINTF(s, 1, "%s: seq %d, len %d\n", __func__,
+                recv->hdr.bSeq, len);
+    ccid_add_pending_answer(s, (CCID_Header *)recv);
+    if (s->card) {
+        ccid_card_apdu_from_guest(s->card, recv->abData, len);
+    } else {
+        DPRINTF(s, D_WARN, "warning: discarded apdu\n");
+    }
+}
+
+/*
+ * Handle a single USB_TOKEN_OUT, return value returned to guest.
+ * Return value:
+ *  0             - all ok
+ *  USB_RET_STALL - failed to handle packet
+ */
+static int ccid_handle_bulk_out(USBCCIDState *s, USBPacket *p)
+{
+    CCID_Header *ccid_header;
+
+    if (p->iov.size + s->bulk_out_pos > BULK_OUT_DATA_SIZE) {
+        return USB_RET_STALL;
+    }
+    ccid_header = (CCID_Header *)s->bulk_out_data;
+    usb_packet_copy(p, s->bulk_out_data + s->bulk_out_pos, p->iov.size);
+    s->bulk_out_pos += p->iov.size;
+    if (p->iov.size == CCID_MAX_PACKET_SIZE) {
+        DPRINTF(s, D_VERBOSE,
+            "usb-ccid: bulk_in: expecting more packets (%zd/%d)\n",
+            p->iov.size, ccid_header->dwLength);
+        return 0;
+    }
+    if (s->bulk_out_pos < 10) {
+        DPRINTF(s, 1,
+                "%s: bad USB_TOKEN_OUT length, should be at least 10 bytes\n",
+                __func__);
+    } else {
+        DPRINTF(s, D_MORE_INFO, "%s %x\n", __func__, ccid_header->bMessageType);
+        switch (ccid_header->bMessageType) {
+        case CCID_MESSAGE_TYPE_PC_to_RDR_GetSlotStatus:
+            ccid_write_slot_status(s, ccid_header);
+            break;
+        case CCID_MESSAGE_TYPE_PC_to_RDR_IccPowerOn:
+            DPRINTF(s, 1, "PowerOn: %d\n",
+                ((CCID_IccPowerOn *)(ccid_header))->bPowerSelect);
+            s->powered = true;
+            if (!ccid_card_inserted(s)) {
+                ccid_report_error_failed(s, ERROR_ICC_MUTE);
+            }
+            /* atr is written regardless of error. */
+            ccid_write_data_block_atr(s, ccid_header);
+            break;
+        case CCID_MESSAGE_TYPE_PC_to_RDR_IccPowerOff:
+            DPRINTF(s, 1, "PowerOff\n");
+            ccid_reset_error_status(s);
+            s->powered = false;
+            ccid_write_slot_status(s, ccid_header);
+            break;
+        case CCID_MESSAGE_TYPE_PC_to_RDR_XfrBlock:
+            ccid_on_apdu_from_guest(s, (CCID_XferBlock *)s->bulk_out_data);
+            break;
+        case CCID_MESSAGE_TYPE_PC_to_RDR_SetParameters:
+            ccid_reset_error_status(s);
+            ccid_set_parameters(s, ccid_header);
+            ccid_write_parameters(s, ccid_header);
+            break;
+        case CCID_MESSAGE_TYPE_PC_to_RDR_ResetParameters:
+            ccid_reset_error_status(s);
+            ccid_reset_parameters(s);
+            ccid_write_parameters(s, ccid_header);
+            break;
+        case CCID_MESSAGE_TYPE_PC_to_RDR_GetParameters:
+            ccid_reset_error_status(s);
+            ccid_write_parameters(s, ccid_header);
+            break;
+        default:
+            DPRINTF(s, 1,
+                "handle_data: ERROR: unhandled message type %Xh\n",
+                ccid_header->bMessageType);
+            /*
+             * The caller is expecting the device to respond, tell it we
+             * don't support the operation.
+             */
+            ccid_report_error_failed(s, ERROR_CMD_NOT_SUPPORTED);
+            ccid_write_slot_status(s, ccid_header);
+            break;
+        }
+    }
+    s->bulk_out_pos = 0;
+    return 0;
+}
+
+static int ccid_bulk_in_copy_to_guest(USBCCIDState *s, USBPacket *p)
+{
+    int ret = 0;
+
+    assert(p->iov.size > 0);
+    ccid_bulk_in_get(s);
+    if (s->current_bulk_in != NULL) {
+        ret = MIN(s->current_bulk_in->len - s->current_bulk_in->pos,
+                  p->iov.size);
+        usb_packet_copy(p, s->current_bulk_in->data +
+                        s->current_bulk_in->pos, ret);
+        s->current_bulk_in->pos += ret;
+        if (s->current_bulk_in->pos == s->current_bulk_in->len) {
+            ccid_bulk_in_release(s);
+        }
+    } else {
+        /* return when device has no data - usb 2.0 spec Table 8-4 */
+        ret = USB_RET_NAK;
+    }
+    if (ret > 0) {
+        DPRINTF(s, D_MORE_INFO,
+                "%s: %zd/%d req/act to guest (BULK_IN)\n",
+                __func__, p->iov.size, ret);
+    }
+    if (ret != USB_RET_NAK && ret < p->iov.size) {
+        DPRINTF(s, 1,
+                "%s: returning short (EREMOTEIO) %d < %zd\n",
+                __func__, ret, p->iov.size);
+    }
+    return ret;
+}
+
+static int ccid_handle_data(USBDevice *dev, USBPacket *p)
+{
+    USBCCIDState *s = DO_UPCAST(USBCCIDState, dev, dev);
+    int ret = 0;
+    uint8_t buf[2];
+
+    switch (p->pid) {
+    case USB_TOKEN_OUT:
+        ret = ccid_handle_bulk_out(s, p);
+        break;
+
+    case USB_TOKEN_IN:
+        switch (p->ep->nr) {
+        case CCID_BULK_IN_EP:
+            if (!p->iov.size) {
+                ret = USB_RET_NAK;
+            } else {
+                ret = ccid_bulk_in_copy_to_guest(s, p);
+            }
+            break;
+        case CCID_INT_IN_EP:
+            if (s->notify_slot_change) {
+                /* page 56, RDR_to_PC_NotifySlotChange */
+                buf[0] = CCID_MESSAGE_TYPE_RDR_to_PC_NotifySlotChange;
+                buf[1] = s->bmSlotICCState;
+                usb_packet_copy(p, buf, 2);
+                ret = 2;
+                s->notify_slot_change = false;
+                s->bmSlotICCState &= ~SLOT_0_CHANGED_MASK;
+                DPRINTF(s, D_INFO,
+                        "handle_data: int_in: notify_slot_change %X, "
+                        "requested len %zd\n",
+                        s->bmSlotICCState, p->iov.size);
+            }
+            break;
+        default:
+            DPRINTF(s, 1, "Bad endpoint\n");
+            ret = USB_RET_STALL;
+            break;
+        }
+        break;
+    default:
+        DPRINTF(s, 1, "Bad token\n");
+        ret = USB_RET_STALL;
+        break;
+    }
+
+    return ret;
+}
+
+static void ccid_handle_destroy(USBDevice *dev)
+{
+    USBCCIDState *s = DO_UPCAST(USBCCIDState, dev, dev);
+
+    ccid_bulk_in_clear(s);
+}
+
+static void ccid_flush_pending_answers(USBCCIDState *s)
+{
+    while (ccid_has_pending_answers(s)) {
+        ccid_write_data_block_answer(s, NULL, 0);
+    }
+}
+
+static Answer *ccid_peek_next_answer(USBCCIDState *s)
+{
+    return s->pending_answers_num == 0
+        ? NULL
+        : &s->pending_answers[s->pending_answers_start % PENDING_ANSWERS_NUM];
+}
+
+static struct BusInfo ccid_bus_info = {
+    .name = "ccid-bus",
+    .size = sizeof(CCIDBus),
+    .props = (Property[]) {
+        DEFINE_PROP_UINT32("slot", struct CCIDCardState, slot, 0),
+        DEFINE_PROP_END_OF_LIST(),
+    }
+};
+
+void ccid_card_send_apdu_to_guest(CCIDCardState *card,
+                                  uint8_t *apdu, uint32_t len)
+{
+    USBCCIDState *s = DO_UPCAST(USBCCIDState, dev.qdev,
+                                card->qdev.parent_bus->parent);
+    Answer *answer;
+
+    if (!ccid_has_pending_answers(s)) {
+        DPRINTF(s, 1, "CCID ERROR: got an APDU without pending answers\n");
+        return;
+    }
+    s->bmCommandStatus = COMMAND_STATUS_NO_ERROR;
+    answer = ccid_peek_next_answer(s);
+    if (answer == NULL) {
+        abort();
+    }
+    DPRINTF(s, 1, "APDU returned to guest %d (answer seq %d, slot %d)\n",
+        len, answer->seq, answer->slot);
+    ccid_write_data_block_answer(s, apdu, len);
+}
+
+void ccid_card_card_removed(CCIDCardState *card)
+{
+    USBCCIDState *s =
+        DO_UPCAST(USBCCIDState, dev.qdev, card->qdev.parent_bus->parent);
+
+    ccid_on_slot_change(s, false);
+    ccid_flush_pending_answers(s);
+    ccid_reset(s);
+}
+
+int ccid_card_ccid_attach(CCIDCardState *card)
+{
+    USBCCIDState *s =
+        DO_UPCAST(USBCCIDState, dev.qdev, card->qdev.parent_bus->parent);
+
+    DPRINTF(s, 1, "CCID Attach\n");
+    if (s->migration_state == MIGRATION_MIGRATED) {
+        s->migration_state = MIGRATION_NONE;
+    }
+    return 0;
+}
+
+void ccid_card_ccid_detach(CCIDCardState *card)
+{
+    USBCCIDState *s =
+        DO_UPCAST(USBCCIDState, dev.qdev, card->qdev.parent_bus->parent);
+
+    DPRINTF(s, 1, "CCID Detach\n");
+    if (ccid_card_inserted(s)) {
+        ccid_on_slot_change(s, false);
+    }
+    ccid_detach(s);
+}
+
+void ccid_card_card_error(CCIDCardState *card, uint64_t error)
+{
+    USBCCIDState *s =
+        DO_UPCAST(USBCCIDState, dev.qdev, card->qdev.parent_bus->parent);
+
+    s->bmCommandStatus = COMMAND_STATUS_FAILED;
+    s->last_answer_error = error;
+    DPRINTF(s, 1, "VSC_Error: %" PRIX64 "\n", s->last_answer_error);
+    /* TODO: these errors should be more verbose and propagated to the guest.*/
+    /*
+     * We flush all pending answers on CardRemove message in ccid-card-passthru,
+     * so check that first to not trigger abort
+     */
+    if (ccid_has_pending_answers(s)) {
+        ccid_write_data_block_answer(s, NULL, 0);
+    }
+}
+
+void ccid_card_card_inserted(CCIDCardState *card)
+{
+    USBCCIDState *s =
+        DO_UPCAST(USBCCIDState, dev.qdev, card->qdev.parent_bus->parent);
+
+    s->bmCommandStatus = COMMAND_STATUS_NO_ERROR;
+    ccid_flush_pending_answers(s);
+    ccid_on_slot_change(s, true);
+}
+
+static int ccid_card_exit(DeviceState *qdev)
+{
+    int ret = 0;
+    CCIDCardState *card = CCID_CARD(qdev);
+    USBCCIDState *s =
+        DO_UPCAST(USBCCIDState, dev.qdev, card->qdev.parent_bus->parent);
+
+    if (ccid_card_inserted(s)) {
+        ccid_card_card_removed(card);
+    }
+    ret = ccid_card_exitfn(card);
+    s->card = NULL;
+    return ret;
+}
+
+static int ccid_card_init(DeviceState *qdev)
+{
+    CCIDCardState *card = CCID_CARD(qdev);
+    USBCCIDState *s =
+        DO_UPCAST(USBCCIDState, dev.qdev, card->qdev.parent_bus->parent);
+    int ret = 0;
+
+    if (card->slot != 0) {
+        error_report("Warning: usb-ccid supports one slot, can't add %d",
+                card->slot);
+        return -1;
+    }
+    if (s->card != NULL) {
+        error_report("Warning: usb-ccid card already full, not adding");
+        return -1;
+    }
+    ret = ccid_card_initfn(card);
+    if (ret == 0) {
+        s->card = card;
+    }
+    return ret;
+}
+
+static int ccid_initfn(USBDevice *dev)
+{
+    USBCCIDState *s = DO_UPCAST(USBCCIDState, dev, dev);
+
+    usb_desc_init(dev);
+    qbus_create_inplace(&s->bus.qbus, &ccid_bus_info, &dev->qdev, NULL);
+    s->intr = usb_ep_get(dev, USB_TOKEN_IN, CCID_INT_IN_EP);
+    s->bus.qbus.allow_hotplug = 1;
+    s->card = NULL;
+    s->migration_state = MIGRATION_NONE;
+    s->migration_target_ip = 0;
+    s->migration_target_port = 0;
+    s->dev.speed = USB_SPEED_FULL;
+    s->dev.speedmask = USB_SPEED_MASK_FULL;
+    s->notify_slot_change = false;
+    s->powered = true;
+    s->pending_answers_num = 0;
+    s->last_answer_error = 0;
+    s->bulk_in_pending_start = 0;
+    s->bulk_in_pending_end = 0;
+    s->current_bulk_in = NULL;
+    ccid_reset_error_status(s);
+    s->bulk_out_pos = 0;
+    ccid_reset_parameters(s);
+    ccid_reset(s);
+    return 0;
+}
+
+static int ccid_post_load(void *opaque, int version_id)
+{
+    USBCCIDState *s = opaque;
+
+    /*
+     * This must be done after usb_device_attach, which sets state to ATTACHED,
+     * while it must be DEFAULT in order to accept packets (like it is after
+     * reset, but reset will reset our addr and call our reset handler which
+     * may change state, and we don't want to do that when migrating).
+     */
+    s->dev.state = s->state_vmstate;
+    return 0;
+}
+
+static void ccid_pre_save(void *opaque)
+{
+    USBCCIDState *s = opaque;
+
+    s->state_vmstate = s->dev.state;
+    if (s->dev.attached) {
+        /*
+         * Migrating an open device, ignore reconnection CHR_EVENT to avoid an
+         * erroneous detach.
+         */
+        s->migration_state = MIGRATION_MIGRATED;
+    }
+}
+
+static VMStateDescription bulk_in_vmstate = {
+    .name = "CCID BulkIn state",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .fields = (VMStateField[]) {
+        VMSTATE_BUFFER(data, BulkIn),
+        VMSTATE_UINT32(len, BulkIn),
+        VMSTATE_UINT32(pos, BulkIn),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
+static VMStateDescription answer_vmstate = {
+    .name = "CCID Answer state",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .fields = (VMStateField[]) {
+        VMSTATE_UINT8(slot, Answer),
+        VMSTATE_UINT8(seq, Answer),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
+static VMStateDescription usb_device_vmstate = {
+    .name = "usb_device",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .fields = (VMStateField[]) {
+        VMSTATE_UINT8(addr, USBDevice),
+        VMSTATE_BUFFER(setup_buf, USBDevice),
+        VMSTATE_BUFFER(data_buf, USBDevice),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
+static VMStateDescription ccid_vmstate = {
+    .name = CCID_DEV_NAME,
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .post_load = ccid_post_load,
+    .pre_save = ccid_pre_save,
+    .fields = (VMStateField[]) {
+        VMSTATE_STRUCT(dev, USBCCIDState, 1, usb_device_vmstate, USBDevice),
+        VMSTATE_UINT8(debug, USBCCIDState),
+        VMSTATE_BUFFER(bulk_out_data, USBCCIDState),
+        VMSTATE_UINT32(bulk_out_pos, USBCCIDState),
+        VMSTATE_UINT8(bmSlotICCState, USBCCIDState),
+        VMSTATE_UINT8(powered, USBCCIDState),
+        VMSTATE_UINT8(notify_slot_change, USBCCIDState),
+        VMSTATE_UINT64(last_answer_error, USBCCIDState),
+        VMSTATE_UINT8(bError, USBCCIDState),
+        VMSTATE_UINT8(bmCommandStatus, USBCCIDState),
+        VMSTATE_UINT8(bProtocolNum, USBCCIDState),
+        VMSTATE_BUFFER(abProtocolDataStructure, USBCCIDState),
+        VMSTATE_UINT32(ulProtocolDataStructureSize, USBCCIDState),
+        VMSTATE_STRUCT_ARRAY(bulk_in_pending, USBCCIDState,
+                       BULK_IN_PENDING_NUM, 1, bulk_in_vmstate, BulkIn),
+        VMSTATE_UINT32(bulk_in_pending_start, USBCCIDState),
+        VMSTATE_UINT32(bulk_in_pending_end, USBCCIDState),
+        VMSTATE_STRUCT_ARRAY(pending_answers, USBCCIDState,
+                        PENDING_ANSWERS_NUM, 1, answer_vmstate, Answer),
+        VMSTATE_UINT32(pending_answers_num, USBCCIDState),
+        VMSTATE_UINT8(migration_state, USBCCIDState),
+        VMSTATE_UINT32(state_vmstate, USBCCIDState),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
+static Property ccid_properties[] = {
+    DEFINE_PROP_UINT8("debug", USBCCIDState, debug, 0),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
+static void ccid_class_initfn(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
+
+    uc->init           = ccid_initfn;
+    uc->product_desc   = "QEMU USB CCID";
+    uc->usb_desc       = &desc_ccid;
+    uc->handle_reset   = ccid_handle_reset;
+    uc->handle_control = ccid_handle_control;
+    uc->handle_data    = ccid_handle_data;
+    uc->handle_destroy = ccid_handle_destroy;
+    dc->desc = "CCID Rev 1.1 smartcard reader";
+    dc->vmsd = &ccid_vmstate;
+    dc->props = ccid_properties;
+}
+
+static TypeInfo ccid_info = {
+    .name          = CCID_DEV_NAME,
+    .parent        = TYPE_USB_DEVICE,
+    .instance_size = sizeof(USBCCIDState),
+    .class_init    = ccid_class_initfn,
+};
+
+static void ccid_card_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *k = DEVICE_CLASS(klass);
+    k->bus_info = &ccid_bus_info;
+    k->init = ccid_card_init;
+    k->exit = ccid_card_exit;
+}
+
+static TypeInfo ccid_card_type_info = {
+    .name = TYPE_CCID_CARD,
+    .parent = TYPE_DEVICE,
+    .instance_size = sizeof(CCIDCardState),
+    .abstract = true,
+    .class_size = sizeof(CCIDCardClass),
+    .class_init = ccid_card_class_init,
+};
+
+static void ccid_register_types(void)
+{
+    type_register_static(&ccid_card_type_info);
+    type_register_static(&ccid_info);
+    usb_legacy_register(CCID_DEV_NAME, "ccid", NULL);
+}
+
+type_init(ccid_register_types)