From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from [140.186.70.92] (port=52940 helo=eggs.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.43) id 1PM3bs-0006zt-Qk
	for qemu-devel@nongnu.org; Fri, 26 Nov 2010 14:05:31 -0500
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <blauwirbel@gmail.com>) id 1PM3bp-0006AI-Cu
	for qemu-devel@nongnu.org; Fri, 26 Nov 2010 14:05:28 -0500
Received: from mail-pw0-f45.google.com ([209.85.160.45]:37619)
	by eggs.gnu.org with esmtp (Exim 4.71)
	(envelope-from <blauwirbel@gmail.com>) id 1PM3bo-0006A0-TR
	for qemu-devel@nongnu.org; Fri, 26 Nov 2010 14:05:25 -0500
Received: by pwj6 with SMTP id 6so506739pwj.4
	for <qemu-devel@nongnu.org>; Fri, 26 Nov 2010 11:05:23 -0800 (PST)
MIME-Version: 1.0
In-Reply-To: <1290702170-3775-2-git-send-email-alevy@redhat.com>
References: <1290702170-3775-1-git-send-email-alevy@redhat.com>
	<1290702170-3775-2-git-send-email-alevy@redhat.com>
From: Blue Swirl <blauwirbel@gmail.com>
Date: Fri, 26 Nov 2010 19:05:02 +0000
Message-ID: <AANLkTimYLHeTv4gX80XHf5EOzOyJ4dmNem_ypCje0vS2@mail.gmail.com>
Subject: Re: [Qemu-devel] [PATCH 1/6] usb-ccid: add CCID bus
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: quoted-printable
List-Id: qemu-devel.nongnu.org
List-Unsubscribe: <http://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>
List-Archive: <http://lists.nongnu.org/archive/html/qemu-devel>
List-Post: <mailto:qemu-devel@nongnu.org>
List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help>
List-Subscribe: <http://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=subscribe>
To: Alon Levy <alevy@redhat.com>
Cc: qemu-devel@nongnu.org

On Thu, Nov 25, 2010 at 4:22 PM, Alon Levy <alevy@redhat.com> wrote:
> A CCID device is a smart card reader. It is a USB device, defined at [1].
> This patch introduces the usb-ccid device that is a ccid bus. Next patche=
s will
> introduce two card types to use it, a passthru card and an emulated card.
>
> =C2=A0[1] http://www.usb.org/developers/devclass_docs/DWG_Smart-Card_CCID=
_Rev110.
>
> Signed-off-by: Alon Levy <alevy@redhat.com>
> ---
> =C2=A0Makefile.objs | =C2=A0 =C2=A01 +
> =C2=A0configure =C2=A0 =C2=A0 | =C2=A0 12 +
> =C2=A0hw/ccid.h =C2=A0 =C2=A0 | =C2=A0 34 ++
> =C2=A0hw/usb-ccid.c | 1342 ++++++++++++++++++++++++++++++++++++++++++++++=
+++++++++++
> =C2=A04 files changed, 1389 insertions(+), 0 deletions(-)
> =C2=A0create mode 100644 hw/ccid.h
> =C2=A0create mode 100644 hw/usb-ccid.c
>
> diff --git a/Makefile.objs b/Makefile.objs
> index 23b17ce..713131f 100644
> --- a/Makefile.objs
> +++ b/Makefile.objs
> @@ -183,6 +183,7 @@ hw-obj-$(CONFIG_FDC) +=3D fdc.o
> =C2=A0hw-obj-$(CONFIG_ACPI) +=3D acpi.o acpi_piix4.o
> =C2=A0hw-obj-$(CONFIG_APM) +=3D pm_smbus.o apm.o
> =C2=A0hw-obj-$(CONFIG_DMA) +=3D dma.o
> +hw-obj-$(CONFIG_SMARTCARD) +=3D usb-ccid.o
>
> =C2=A0# PPC devices
> =C2=A0hw-obj-$(CONFIG_OPENPIC) +=3D openpic.o
> diff --git a/configure b/configure
> index 2917874..fb9eac2 100755
> --- a/configure
> +++ b/configure
> @@ -332,6 +332,7 @@ zero_malloc=3D""
> =C2=A0trace_backend=3D"nop"
> =C2=A0trace_file=3D"trace"
> =C2=A0spice=3D""
> +smartcard=3D"no"
>
> =C2=A0# OS specific
> =C2=A0if check_define __linux__ ; then
> @@ -739,6 +740,10 @@ for opt do
> =C2=A0 ;;
> =C2=A0 --enable-vhost-net) vhost_net=3D"yes"
> =C2=A0 ;;
> + =C2=A0--disable-smartcard) smartcard=3D"no"
> + =C2=A0;;
> + =C2=A0--enable-smartcard) smartcard=3D"yes"
> + =C2=A0;;
> =C2=A0 --*dir)
> =C2=A0 ;;
> =C2=A0 *) echo "ERROR: unknown option $opt"; show_help=3D"yes"
> @@ -934,6 +939,8 @@ echo " =C2=A0--trace-file=3DNAME =C2=A0 =C2=A0 =C2=A0=
 =C2=A0Full PATH,NAME of file to store traces"
> =C2=A0echo " =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Default:trace-<pid>"
> =C2=A0echo " =C2=A0--disable-spice =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0disa=
ble spice"
> =C2=A0echo " =C2=A0--enable-spice =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 enab=
le spice"
> +echo " =C2=A0--disable-smartcard =C2=A0 =C2=A0 =C2=A0disable smartcard s=
upport"
> +echo " =C2=A0--enable-smartcard =C2=A0 =C2=A0 =C2=A0 enable smartcard su=
pport"
> =C2=A0echo ""
> =C2=A0echo "NOTE: The object files are built at the place where configure=
 is launched"
> =C2=A0exit 1
> @@ -2354,6 +2361,7 @@ echo "vhost-net support $vhost_net"
> =C2=A0echo "Trace backend =C2=A0 =C2=A0 $trace_backend"
> =C2=A0echo "Trace output file $trace_file-<pid>"
> =C2=A0echo "spice support =C2=A0 =C2=A0 $spice"
> +echo "smartcard support $smartcard"
>
> =C2=A0if test $sdl_too_old =3D "yes"; then
> =C2=A0echo "-> Your SDL version is too old - please upgrade to have SDL s=
upport"
> @@ -2617,6 +2625,10 @@ if test "$spice" =3D "yes" ; then
> =C2=A0 echo "CONFIG_SPICE=3Dy" >> $config_host_mak
> =C2=A0fi
>
> +if test "$smartcard" =3D "yes" ; then
> + =C2=A0echo "CONFIG_SMARTCARD=3Dy" >> $config_host_mak
> +fi
> +
> =C2=A0# XXX: suppress that
> =C2=A0if [ "$bsd" =3D "yes" ] ; then
> =C2=A0 echo "CONFIG_BSD=3Dy" >> $config_host_mak
> diff --git a/hw/ccid.h b/hw/ccid.h
> new file mode 100644
> index 0000000..a38f971
> --- /dev/null
> +++ b/hw/ccid.h
> @@ -0,0 +1,34 @@
> +#ifndef __CCID_H__
> +#define __CCID_H__
> +
> +#include "qdev.h"
> +
> +typedef struct CCIDCardState CCIDCardState;
> +typedef struct CCIDCardInfo CCIDCardInfo;
> +
> +struct CCIDCardState {
> + =C2=A0 =C2=A0DeviceState qdev;
> +};
> +
> +struct CCIDCardInfo {
> + =C2=A0 =C2=A0DeviceInfo qdev;
> + =C2=A0 =C2=A0void (*print)(Monitor *mon, CCIDCardState *card, int inden=
t);
> + =C2=A0 =C2=A0const uint8_t *(*get_atr)(CCIDCardState *card, uint32_t *l=
en);
> + =C2=A0 =C2=A0void (*apdu_from_guest)(CCIDCardState *card, const uint8_t=
 *apdu, uint32_t len);
> + =C2=A0 =C2=A0int (*exitfn)(CCIDCardState *card);
> + =C2=A0 =C2=A0int (*initfn)(CCIDCardState *card);
> +};
> +
> +void ccid_card_send_apdu_to_guest(CCIDCardState *card, uint8_t* apdu, ui=
nt32_t len);
> +void ccid_card_card_removed(CCIDCardState *card);
> +void ccid_card_card_inserted(CCIDCardState *card);
> +void ccid_card_card_error(CCIDCardState *card, uint64_t error);
> +void ccid_card_qdev_register(CCIDCardInfo *card);
> +
> +/* support guest visible insertion/removal of ccid devices based on actu=
al
> + * devices connected/removed. Called by card implementation (passthru, l=
ocal) */
> +int ccid_card_ccid_attach(CCIDCardState *card);
> +void ccid_card_ccid_detach(CCIDCardState *card);
> +
> +#endif // __CCID_H__
> +
> diff --git a/hw/usb-ccid.c b/hw/usb-ccid.c
> new file mode 100644
> index 0000000..66c1dba
> --- /dev/null
> +++ b/hw/usb-ccid.c
> @@ -0,0 +1,1342 @@
> +/*
> + * CCID Device emulation
> + *
> + * Based on usb-serial.c:
> + * Copyright (c) 2006 CodeSourcery.
> + * Copyright (c) 2008 Samuel Thibault <samuel.thibault@ens-lyon.org>
> + * Written by Paul Brook, reused for FTDI by Samuel Thibault,
> + * Reused for CCID by Alon Levy.
> + * Contributed to by Robert Relyea
> + * Copyright (c) 2010 Red Hat.
> + *
> + * This code is licenced under the LGPL.
> + */
> +
> +/* References:
> + *
> + * CCID Specification Revision 1.1 April 22nd 2005
> + * =C2=A0"Universal Serial Bus, Device Class: Smart Card"
> + * =C2=A0Specification for Integrated Circuit(s) Cards Interface Devices
> + *
> + * KNOWN BUGS
> + * 1. remove/insert can sometimes result in removed state instead of ins=
erted.
> + * This is a result of the following:
> + * =C2=A0symptom: dmesg shows ERMOTEIO (-121), pcscd shows -99. This hap=
pens
> + * =C2=A0when we send a too short packet, seen in uhci-usb.c, resulting =
from
> + * =C2=A0a urb requesting SPD and us returning a smaller packet.
> + * =C2=A0Not sure which messages trigger this.
> + *
> + */
> +
> +#include "qemu-common.h"
> +#include "qemu-error.h"
> +#include "usb.h"
> +#include "monitor.h"
> +
> +#include "hw/ccid.h"
> +
> +//#define DEBUG_CCID
> +
> +#define DPRINTF(s, lvl, fmt, ...) \
> +do { if (lvl <=3D s->debug) { printf("usb-ccid: " fmt , ## __VA_ARGS__);=
 } } while (0)
> +
> +#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 =C2=A0 =C2=A0((USB_DIR_OUT|USB_TYPE_CLASS|USB_=
RECIP_INTERFACE)<<8)
> +#define InterfaceInClass =C2=A0 =C2=A0 ((USB_DIR_IN |USB_TYPE_CLASS|USB_=
RECIP_INTERFACE)<<8)
> +
> +#define CCID_CONTROL_ABORT =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A00x1
> +#define CCID_CONTROL_GET_CLOCK_FREQUENCIES =C2=A00x2
> +#define CCID_CONTROL_GET_DATA_RATES =C2=A0 =C2=A0 =C2=A0 =C2=A0 0x3
> +
> +#define CCID_PRODUCT_DESCRIPTION =C2=A0 =C2=A0 =C2=A0 =C2=A0"QEMU USB CC=
ID"
> +#define CCID_VENDOR_DESCRIPTION =C2=A0 =C2=A0 =C2=A0 =C2=A0 "QEMU " QEMU=
_VERSION
> +#define CCID_INTERFACE_NAME =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 "C=
CID Interface"
> +#define CCID_SERIAL_NUMBER_STRING =C2=A0 =C2=A0 =C2=A0 "1"
> +/* Using Gemplus Vendor and Product id
> + =C2=A0Effect on various drivers:
> + =C2=A0* usbccid.sys (winxp, others untested) is a class driver so it do=
esn't care.
> + =C2=A0* linux has a number of class drivers, but openct filters based o=
n
> + =C2=A0 =C2=A0vendor/product (/etc/openct.conf under fedora), hence Gemp=
lus.
> + */
> +#define CCID_VENDOR_ID =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A00x08e6
> +#define CCID_PRODUCT_ID =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 0x4433
> +#define CCID_DEVICE_VERSION =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 0x=
0000
> +
> +/* BULK_OUT messages from PC to Reader
> + =C2=A0 Defined in CCID Rev 1.1 6.1 (page 26)
> + */
> +#define CCID_MESSAGE_TYPE_PC_to_RDR_IccPowerOn =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A00x62
> +#define CCID_MESSAGE_TYPE_PC_to_RDR_IccPowerOff =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 0x63
> +#define CCID_MESSAGE_TYPE_PC_to_RDR_GetSlotStatus =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 0x65
> +#define CCID_MESSAGE_TYPE_PC_to_RDR_XfrBlock =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A00x6f
> +#define CCID_MESSAGE_TYPE_PC_to_RDR_GetParameters =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 0x6c
> +#define CCID_MESSAGE_TYPE_PC_to_RDR_ResetParameters =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 0x6d
> +#define CCID_MESSAGE_TYPE_PC_to_RDR_SetParameters =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 0x61
> +#define CCID_MESSAGE_TYPE_PC_to_RDR_Escape =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A00x6b
> +#define CCID_MESSAGE_TYPE_PC_to_RDR_IccClock =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A00x6e
> +#define CCID_MESSAGE_TYPE_PC_to_RDR_T0APDU =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A00x6a
> +#define CCID_MESSAGE_TYPE_PC_to_RDR_Secure =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A00x69
> +#define CCID_MESSAGE_TYPE_PC_to_RDR_Mechanical =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A00x71
> +#define CCID_MESSAGE_TYPE_PC_to_RDR_Abort =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 0x72
> +#define CCID_MESSAGE_TYPE_PC_to_RDR_SetDataRateAndClockFrequency 0x73
> +
> +/* BULK_IN messages from Reader to PC
> + =C2=A0 Defined in CCID Rev 1.1 6.2 (page 48)
> + */
> +#define CCID_MESSAGE_TYPE_RDR_to_PC_DataBlock =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 0x80
> +#define CCID_MESSAGE_TYPE_RDR_to_PC_SlotStatus =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A00x81
> +#define CCID_MESSAGE_TYPE_RDR_to_PC_Parameters =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A00x82
> +#define CCID_MESSAGE_TYPE_RDR_to_PC_Escape =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A00x83
> +#define CCID_MESSAGE_TYPE_RDR_to_PC_DataRateAndClockFrequency 0x84
> +
> +/* INTERRUPT_IN messages from Reader to PC
> + =C2=A0 Defined in CCID Rev 1.1 6.3 (page 56)
> + */
> +#define CCID_MESSAGE_TYPE_RDR_to_PC_NotifySlotChange =C2=A0 =C2=A0 =C2=
=A0 =C2=A00x50
> +#define CCID_MESSAGE_TYPE_RDR_to_PC_HardwareError =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 0x51
> +
> +/* Endpoints for CCID - addresses are up to us to decide.
> + =C2=A0 To support slot insertion and removal we must have an interrupt =
in ep
> + =C2=A0 in addition we need a bulk in and bulk out ep
> + =C2=A0 5.2, page 20
> + */
> +#define CCID_INT_IN_EP =C2=A0 =C2=A0 =C2=A0 1
> +#define CCID_BULK_IN_EP =C2=A0 =C2=A0 =C2=A02
> +#define CCID_BULK_OUT_EP =C2=A0 =C2=A0 3
> +
> +/* bmSlotICCState masks */
> +#define SLOT_0_STATE_MASK =C2=A0 =C2=A01
> +#define SLOT_0_CHANGED_MASK =C2=A02
> +
> +/* Status codes that go in bStatus (see 6.2.6) */
> +enum {
> + =C2=A0 =C2=A0ICC_STATUS_PRESENT_ACTIVE =3D 0,
> + =C2=A0 =C2=A0ICC_STATUS_PRESENT_INACTIVE,
> + =C2=A0 =C2=A0ICC_STATUS_NOT_PRESENT
> +};
> +
> +enum {
> + =C2=A0 =C2=A0COMMAND_STATUS_NO_ERROR =3D 0,
> + =C2=A0 =C2=A0COMMAND_STATUS_FAILED,
> + =C2=A0 =C2=A0COMMAND_STATUS_TIME_EXTENSION_REQUIRED
> +};
> +
> +/* Error codes that go in bError (see 6.2.6)
> + */
> +enum {
> + =C2=A0 =C2=A0ERROR_CMD_NOT_SUPPORTED =3D 0,
> + =C2=A0 =C2=A0ERROR_CMD_ABORTED =C2=A0 =C2=A0 =C2=A0 =3D -1,
> + =C2=A0 =C2=A0ERROR_ICC_MUTE =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=3D -2,
> + =C2=A0 =C2=A0ERROR_XFR_PARITY_ERROR =C2=A0=3D -3,
> + =C2=A0 =C2=A0ERROR_XFR_OVERRUN =C2=A0 =C2=A0 =C2=A0 =3D -4,
> + =C2=A0 =C2=A0ERROR_HW_ERROR =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=3D -5,
> +};
> +
> +/* 6.2.6 RDR_to_PC_SlotStatus definitions */
> +enum {
> + =C2=A0 =C2=A0CLOCK_STATUS_RUNNING =3D 0,
> + =C2=A0 =C2=A0/* 0 - Clock Running, 1 - Clock stopped in State L, 2 - H,
> + =C2=A0 =C2=A0 =C2=A0 3 - unkonwn state. rest are RFU
> + =C2=A0 =C2=A0 */
> +};
> +
> +typedef struct __attribute__ ((__packed__)) {

Please don't use anonymous structs.

> + =C2=A0 =C2=A0uint8_t =C2=A0 =C2=A0 bMessageType;

Why aHungarian nNotation? It's not QEMU style.

> + =C2=A0 =C2=A0uint32_t =C2=A0 =C2=A0dwLength;
> + =C2=A0 =C2=A0uint8_t =C2=A0 =C2=A0 bSlot;
> + =C2=A0 =C2=A0uint8_t =C2=A0 =C2=A0 bSeq;
> +} CCID_Header;

Packed structure with unaligned fields. Will this work?

> +
> +typedef struct __attribute__ ((__packed__)) {
> + =C2=A0 =C2=A0CCID_Header hdr;
> + =C2=A0 =C2=A0uint8_t =C2=A0 =C2=A0 bStatus; =C2=A0 =C2=A0 =C2=A0 =C2=A0=
/* Only used in BULK_IN */
> + =C2=A0 =C2=A0uint8_t =C2=A0 =C2=A0 bError; =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
/* Only used in BULK_IN */
> +} CCID_BULK_IN;
> +
> +typedef struct __attribute__ ((__packed__)) {
> + =C2=A0 =C2=A0CCID_BULK_IN b;
> + =C2=A0 =C2=A0uint8_t =C2=A0 =C2=A0 bClockStatus;
> +} CCID_SlotStatus;
> +
> +typedef struct __attribute__ ((__packed__)) {
> + =C2=A0 =C2=A0CCID_BULK_IN b;
> + =C2=A0 =C2=A0uint8_t =C2=A0 =C2=A0 bProtocolNum;
> + =C2=A0 =C2=A0uint8_t =C2=A0 =C2=A0 abProtocolDataStructure[0];
> +} CCID_Parameter;
> +
> +typedef struct __attribute__ ((__packed__)) {
> + =C2=A0 =C2=A0CCID_BULK_IN b;
> + =C2=A0 =C2=A0uint8_t =C2=A0 =C2=A0 =C2=A0bChainParameter;
> + =C2=A0 =C2=A0uint8_t =C2=A0 =C2=A0 =C2=A0abData[0];
> +} CCID_DataBlock;
> +
> +/* 6.1.4 PC_to_RDR_XfrBlock */
> +typedef struct __attribute__ ((__packed__)) {
> + =C2=A0 =C2=A0CCID_Header =C2=A0hdr;
> + =C2=A0 =C2=A0uint8_t =C2=A0 =C2=A0 =C2=A0bBWI; /* Block Waiting Timeout=
 */
> + =C2=A0 =C2=A0uint16_t =C2=A0 =C2=A0 wLevelParameter;
> + =C2=A0 =C2=A0uint8_t =C2=A0 =C2=A0 =C2=A0abData[0];
> +} CCID_XferBlock;
> +
> +typedef struct __attribute__ ((__packed__)) {
> + =C2=A0 =C2=A0CCID_Header hdr;
> + =C2=A0 =C2=A0uint8_t =C2=A0 =C2=A0 bPowerSelect;
> + =C2=A0 =C2=A0uint16_t =C2=A0 =C2=A0abRFU;
> +} CCID_IccPowerOn;
> +
> +typedef struct __attribute__ ((__packed__)) {
> + =C2=A0 =C2=A0CCID_Header hdr;
> + =C2=A0 =C2=A0uint16_t =C2=A0 =C2=A0abRFU;
> +} CCID_IccPowerOff;
> +
> +typedef struct __attribute__ ((__packed__)) {
> + =C2=A0 =C2=A0CCID_Header hdr;
> + =C2=A0 =C2=A0uint8_t =C2=A0 =C2=A0 bProtocolNum;
> + =C2=A0 =C2=A0uint8_t =C2=A0 =C2=A0abProtocolDataStructure[0];
> +} CCID_SetParameter;
> +
> +typedef struct {
> + =C2=A0 =C2=A0uint8_t =C2=A0 =C2=A0 bMessageType; /* CCID_MESSAGE_TYPE_R=
DR_to_PC_NotifySlotChange */
> + =C2=A0 =C2=A0uint8_t =C2=A0 =C2=A0 bmSlotICCState;
> +} CCID_Notify_Slot_Change;
> +
> +/* used for DataBlock response to XferBlock */
> +typedef struct answer_t {
> + =C2=A0 =C2=A0uint8_t slot;
> + =C2=A0 =C2=A0uint8_t seq;
> +} answer_t;
> +

answer_t is not in line with CODING_STYLE.

> +/* pending BULK_IN messages */
> +typedef struct bulk_in_t {
> + =C2=A0 =C2=A0uint8_t =C2=A0data[BULK_IN_BUF_SIZE];
> + =C2=A0 =C2=A0uint32_t len;
> + =C2=A0 =C2=A0uint32_t pos;
> +} bulk_in_t;

Neither is this.

> +
> +enum {
> + =C2=A0 =C2=A0MIGRATION_NONE,
> + =C2=A0 =C2=A0MIGRATION_MIGRATED,
> +};
> +
> +typedef struct CCIDBus CCIDBus;
> +typedef struct USBCCIDState USBCCIDState;
> +
> +#define MAX_PROTOCOL_SIZE =C2=A0 7
> +
> +/**
> + * powered - defaults to true, changed by PowerOn/PowerOff messages
> + */
> +struct USBCCIDState {
> + =C2=A0 =C2=A0USBDevice dev;
> + =C2=A0 =C2=A0CCIDBus *bus;
> + =C2=A0 =C2=A0CCIDCardState *card;
> + =C2=A0 =C2=A0CCIDCardInfo *cardinfo; /* caching the info pointer */
> + =C2=A0 =C2=A0uint8_t =C2=A0debug;
> + =C2=A0 =C2=A0uint8_t =C2=A0auto_attach;
> + =C2=A0 =C2=A0bulk_in_t bulk_in_pending[BULK_IN_PENDING_NUM]; /* circula=
r */
> + =C2=A0 =C2=A0uint32_t bulk_in_pending_start;
> + =C2=A0 =C2=A0uint32_t bulk_in_pending_end; /* first free */
> + =C2=A0 =C2=A0uint32_t bulk_in_pending_num;
> + =C2=A0 =C2=A0bulk_in_t *current_bulk_in;
> + =C2=A0 =C2=A0uint8_t =C2=A0bulk_out_data[BULK_OUT_DATA_SIZE];
> + =C2=A0 =C2=A0uint32_t bulk_out_pos;
> + =C2=A0 =C2=A0uint8_t =C2=A0bmSlotICCState;
> + =C2=A0 =C2=A0uint8_t =C2=A0powered;
> + =C2=A0 =C2=A0uint8_t =C2=A0notify_slot_change;
> + =C2=A0 =C2=A0uint64_t last_answer_error;
> + =C2=A0 =C2=A0answer_t pending_answers[PENDING_ANSWERS_NUM];
> + =C2=A0 =C2=A0uint32_t pending_answers_start;
> + =C2=A0 =C2=A0uint32_t pending_answers_end;
> + =C2=A0 =C2=A0uint32_t pending_answers_num;
> + =C2=A0 =C2=A0uint8_t =C2=A0bError;
> + =C2=A0 =C2=A0uint8_t =C2=A0bmCommandStatus;
> + =C2=A0 =C2=A0uint8_t =C2=A0bProtocolNum;
> + =C2=A0 =C2=A0uint8_t =C2=A0abProtocolDataStructure[MAX_PROTOCOL_SIZE];
> + =C2=A0 =C2=A0uint32_t ulProtocolDataStructureSize;
> + =C2=A0 =C2=A0uint8_t =C2=A0attached_vmstate;
> + =C2=A0 =C2=A0uint32_t state_vmstate;
> + =C2=A0 =C2=A0uint8_t =C2=A0migration_state;
> + =C2=A0 =C2=A0uint32_t migration_target_ip;
> + =C2=A0 =C2=A0uint16_t migration_target_port;
> +};
> +
> +/* Slot specific variables. We emulate a single slot card reader.
> + */
> +
> +
> +/* CCID Spec chapter 4: CCID uses a standard device descriptor per Chapt=
er 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 Ca=
rd
> + * Reader as reference:
> + * =C2=A0 0dc3:1004 Athena Smartcard Solutions, Inc.
> + */
> +
> +static const uint8_t qemu_ccid_dev_descriptor[] =3D {
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x12, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 bLeng=
th; */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0USB_DT_DEVICE, /* =C2=A0u8 bDescriptorType; =
Device */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x10, 0x01, /* =C2=A0u16 bcdUSB; v1.1 */
> +
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x00, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0bDeviceClass; */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x00, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0bDeviceSubClass; */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x00, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0bDeviceProtocol; [ low/full speeds only ] */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x40, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0bMaxPacketSize0; 8 Bytes (valid: 8,16,32,64) */
> +
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0/* Vendor and product id are arbitrary. =C2=
=A0*/
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0/*=
 =C2=A0u16 idVendor =C2=A0*/
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0CCID_VENDOR_ID & 0xff, CCID_VENDOR_ID >> 8,
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0/*=
 =C2=A0u16 idProduct */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0CCID_PRODUCT_ID & 0xff, CCID_PRODUCT_ID >> 8=
,
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0/*=
 =C2=A0u16 bcdDevice */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0CCID_DEVICE_VERSION & 0xff, CCID_DEVICE_VERS=
ION >> 8,
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x01, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0iManufacturer; */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x02, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0iProduct; */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x03, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0iSerialNumber; */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x01, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0bNumConfigurations; */
> +};
> +
> +static const uint8_t qemu_ccid_config_descriptor[] =3D {
> +
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0/* one configuration */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x09, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0bLength; */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0USB_DT_CONFIG, /* =C2=A0u8 =C2=A0bDescriptor=
Type; Configuration */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x5d, 0x00, /* =C2=A0u16 wTotalLength; 9+9+5=
4+7+7+7 */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x01, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0bNumInterfaces; (1) */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x01, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0bConfigurationValue; */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x00, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0iConfiguration; */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00xe0, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0bmAttributes;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Bit 7: must be set,
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 6: Self-powered,
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 5: Remote wakeup,
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 4..0: resvd */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0100/2, =C2=A0 =C2=A0 =C2=A0/* =C2=A0u8 =C2=
=A0MaxPower; 50 =3D=3D 100mA */
> +
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0/* one interface */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x09, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0if_bLength; */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0USB_DT_INTERFACE, /* =C2=A0u8 =C2=A0if_bDesc=
riptorType; Interface */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x00, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0if_bInterfaceNumber; */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x00, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0if_bAlternateSetting; */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x03, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0if_bNumEndpoints; */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x0b, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0if_bInterfaceClass; Smart Card Device Class */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x00, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0if_bInterfaceSubClass; Subclass code */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x00, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0if_bInterfaceProtocol; Protocol code */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x04, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0if_iInterface; Index of string descriptor */
> +
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0/* Smart Card Device Class Descriptor */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x36, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0bLength; */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x21, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0bDescriptorType; Functional */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x10, 0x01, /* =C2=A0u16 bcdCCID; CCID Speci=
fication Release Number. */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x00, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0bMaxSlotIndex; The index of the highest available
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0slot on this device. All slots are consecutive starting
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0at 00h. */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x07, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0bVoltageSupport; 01h - 5.0v, 02h - 3.0, 03 - 1.8 */
> +
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x03, 0x00, /* =C2=A0u32 dwProtocols; RRRR P=
PPP. RRRR =3D 0000h.*/
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x00, 0x00, /* =C2=A0PPPP: 0001h =3D Protoco=
l T=3D0, 0002h =3D Protocol T=3D1 */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0/*=
 =C2=A0u32 dwDefaultClock; in kHZ (0x0fa0 is 4 MHz) */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00xa0, 0x0f, 0x00, 0x00,
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0/*=
 =C2=A0u32 dwMaximumClock; */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x00, 0x00, 0x01, 0x00,
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x00, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 bNumC=
lockSupported; 0 means just the default and max. */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0/*=
 =C2=A0u32 dwDataRate ;bps. 9600 =3D=3D 00002580h */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x80, 0x25, 0x00, 0x00,
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0/*=
 =C2=A0u32 dwMaxDataRate ; 11520 bps =3D=3D 0001C200h */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x00, 0xC2, 0x01, 0x00,
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x00, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0bNumDataRatesSupported; 00 means all rates between
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 *=
 =C2=A0 =C2=A0 =C2=A0default and max */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0/*=
 =C2=A0u32 dwMaxIFSD; maximum IFSD supported by CCID for protocol
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 *=
 =C2=A0 =C2=A0 =C2=A0T=3D1 (Maximum seen from various cards) */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00xfe, 0x00, 0x00, 0x00,
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0/*=
 =C2=A0u32 dwSyncProtocols; 1 - 2-wire, 2 - 3-wire, 4 - I2C */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x00, 0x00, 0x00, 0x00,
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0/*=
 =C2=A0u32 dwMechanical; =C2=A00 - no special characteristics. */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x00, 0x00, 0x00, 0x00,
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0/*=
 =C2=A0u32 dwFeatures;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 *=
 =C2=A00 - No special characteristics
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 *=
 =C2=A0+ 2 Automatic parameter configuration based on ATR data
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 *=
 =C2=A0+ 4 Automatic activation of ICC on inserting
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 *=
 =C2=A0+ 8 Automatic ICC voltage selection
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 *=
 =C2=A0+ 10 Automatic ICC clock frequency change
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 *=
 =C2=A0+ 20 Automatic baud rate change
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 *=
 =C2=A0+ 40 Automatic parameters negotiation made by the CCID
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 *=
 =C2=A0+ 80 automatic PPS made by the CCID
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 *=
 =C2=A0100 CCID can set ICC in clock stop mode
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 *=
 =C2=A0200 NAD value other then 00 accepted (T=3D1 protocol)
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 *=
 =C2=A0+ 400 Automatic IFSD exchange as first exchange (T=3D1)
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 *=
 =C2=A0One of the following only:
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 *=
 =C2=A0+ 10000 TPDU level exchanges with CCID
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 *=
 =C2=A020000 Short APDU level exchange with CCID
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 *=
 =C2=A040000 Short and Extended APDU level exchange with CCID
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 *
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 *=
 =C2=A0+ 100000 USB Wake up signaling supported on card insertion
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 *=
 =C2=A0and removal. Must set bit 5 in bmAttributes in Configuration
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 *=
 =C2=A0descriptor if 100000 is set.*/
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00xfe, 0x04, 0x11, 0x00,
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0/*=
 =C2=A0u32 dwMaxCCIDMessageLength; For extended APDU in [261 + 10
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 *=
 =C2=A0, 65544 + 10]. Otherwise the minimum is wMaxPacketSize of
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 *=
 =C2=A0the Bulk-OUT endpoint */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x12, 0x00, 0x01, 0x00,
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00xFF, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0bClassGetResponse; Significant only for CCID that
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 *=
 =C2=A0offers an APDU level for exchanges. Indicates the default
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 *=
 =C2=A0class value used by the CCID when it sends a Get Response
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 *=
 =C2=A0command to perform the transportation of an APDU by T=3D0
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 *=
 =C2=A0protocol
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 *=
 =C2=A0FFh indicates that the CCID echos the class of the APDU.
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 *=
/
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00xFF, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0bClassEnvelope; EAPDU only. Envelope command for T=3D0 */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x00, 0x00, /* =C2=A0u16 wLcdLayout; XXYY Nu=
mber of lines (XX) and chars per
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 *=
 =C2=A0line for LCD display used for PIN entry. 0000 - no LCD */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x01, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0bPINSupport; 01h PIN Verification,
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 *=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 02h PIN Mod=
ification */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x01, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0bMaxCCIDBusySlots; */
> +
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0/* Interrupt-IN endpoint */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x07, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0ep_bLength; */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0/*=
 =C2=A0u8 =C2=A0ep_bDescriptorType; Endpoint */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0USB_DT_ENDPOINT,
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0/*=
 =C2=A0u8 =C2=A0ep_bEndpointAddress; IN Endpoint 1 */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x80 | CCID_INT_IN_EP,
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x03, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0ep_bmAttributes; Interrupt */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x40, 0x00, /* =C2=A0u16 ep_wMaxPacketSize; =
*/
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00xff, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0ep_bInterval; */
> +
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0/* Bulk-In endpoint */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x07, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0ep_bLength; */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0/*=
 =C2=A0u8 =C2=A0ep_bDescriptorType; Endpoint */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0USB_DT_ENDPOINT,
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0/*=
 =C2=A0u8 =C2=A0ep_bEndpointAddress; IN Endpoint 2 */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x80 | CCID_BULK_IN_EP,
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x02, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0ep_bmAttributes; Bulk */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x40, 0x00, /* =C2=A0u16 ep_wMaxPacketSize; =
*/
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x00, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0ep_bInterval; */
> +
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0/* Bulk-Out endpoint */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x07, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0ep_bLength; */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0/*=
 =C2=A0u8 =C2=A0ep_bDescriptorType; Endpoint */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0USB_DT_ENDPOINT,
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0/*=
 =C2=A0u8 =C2=A0ep_bEndpointAddress; OUT Endpoint 3 */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0CCID_BULK_OUT_EP,
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x02, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0ep_bmAttributes; Bulk */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x40, 0x00, /* =C2=A0u16 ep_wMaxPacketSize; =
*/
> + =C2=A0 =C2=A0 =C2=A0 =C2=A00x00, =C2=A0 =C2=A0 =C2=A0 /* =C2=A0u8 =C2=
=A0ep_bInterval; */
> +
> +};
> +
> +static bool ccid_has_pending_answers(USBCCIDState *s)
> +{
> + =C2=A0 =C2=A0return s->pending_answers_num > 0;
> +}
> +
> +static void ccid_clear_pending_answers(USBCCIDState *s)
> +{
> + =C2=A0 =C2=A0s->pending_answers_num =3D 0;
> + =C2=A0 =C2=A0s->pending_answers_start =3D 0;
> + =C2=A0 =C2=A0s->pending_answers_end =3D 0;
> +}
> +
> +static void ccid_print_pending_answers(USBCCIDState *s)
> +{
> +#ifdef DEBUG_CCID
> + =C2=A0 =C2=A0answer_t *answer;
> + =C2=A0 =C2=A0int i, count;
> +
> + =C2=A0 =C2=A0printf("usb-ccid: pending answers:");
> + =C2=A0 =C2=A0if (!ccid_has_pending_answers(s)) {
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0printf(" empty\n");
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0return;
> + =C2=A0 =C2=A0}
> + =C2=A0 =C2=A0for (i =3D s->pending_answers_start, count=3Ds->pending_an=
swers_num ;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 count > 0; count--, i++) {
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0answer =3D &s->pending_answers[i % PENDING_A=
NSWERS_NUM];
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0if (count =3D=3D 1) {
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0printf("%d:%d\n", answer->slot=
, answer->seq);
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0} else {
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0printf("%d:%d,", answer->slot,=
 answer->seq);
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0}
> + =C2=A0 =C2=A0}
> +#endif
> +}
> +
> +static void ccid_add_pending_answer(USBCCIDState *s, CCID_Header *hdr)
> +{
> + =C2=A0 =C2=A0answer_t* answer;
> +
> + =C2=A0 =C2=A0assert(s->pending_answers_num++ < PENDING_ANSWERS_NUM);
> + =C2=A0 =C2=A0answer =3D &s->pending_answers[(s->pending_answers_end++) =
% PENDING_ANSWERS_NUM];
> + =C2=A0 =C2=A0answer->slot =3D hdr->bSlot;
> + =C2=A0 =C2=A0answer->seq =3D hdr->bSeq;
> + =C2=A0 =C2=A0ccid_print_pending_answers(s);
> +}
> +
> +static void ccid_remove_pending_answer(USBCCIDState *s,
> + =C2=A0 =C2=A0uint8_t *slot, uint8_t *seq)
> +{
> + =C2=A0 =C2=A0answer_t *answer;
> +
> + =C2=A0 =C2=A0assert(s->pending_answers_num-- > 0);
> + =C2=A0 =C2=A0answer =3D &s->pending_answers[(s->pending_answers_start++=
) % PENDING_ANSWERS_NUM];
> + =C2=A0 =C2=A0*slot =3D answer->slot;
> + =C2=A0 =C2=A0*seq =3D answer->seq;
> + =C2=A0 =C2=A0ccid_print_pending_answers(s);
> +}
> +
> +static void ccid_bulk_in_clear(USBCCIDState *s)
> +{
> + =C2=A0 =C2=A0s->bulk_in_pending_start =3D 0;
> + =C2=A0 =C2=A0s->bulk_in_pending_end =3D 0;
> + =C2=A0 =C2=A0s->bulk_in_pending_num =3D 0;
> +}
> +
> +static void ccid_bulk_in_release(USBCCIDState *s)
> +{
> + =C2=A0 =C2=A0assert(s->current_bulk_in !=3D NULL);
> + =C2=A0 =C2=A0s->current_bulk_in->pos =3D 0;
> + =C2=A0 =C2=A0s->current_bulk_in =3D NULL;
> +}
> +
> +static void ccid_bulk_in_get(USBCCIDState *s)
> +{
> + =C2=A0 =C2=A0if (s->current_bulk_in !=3D NULL || s->bulk_in_pending_num=
 =3D=3D 0) {
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0return;
> + =C2=A0 =C2=A0}
> + =C2=A0 =C2=A0assert(s->bulk_in_pending_num > 0);
> + =C2=A0 =C2=A0s->bulk_in_pending_num--;
> + =C2=A0 =C2=A0s->current_bulk_in =3D &s->bulk_in_pending[
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0(s->bulk_in_pending_start++) % BULK_IN_PENDI=
NG_NUM];
> +}
> +
> +static void* ccid_reserve_recv_buf(USBCCIDState* s, uint16_t len)
> +{
> + =C2=A0 =C2=A0bulk_in_t* bulk_in;
> +
> + =C2=A0 =C2=A0DPRINTF(s, 4, "%s: QUEUE: reserve %d bytes\n", __func__, l=
en);
> +
> + =C2=A0 =C2=A0/* look for an existing element */
> + =C2=A0 =C2=A0if (len > BULK_IN_BUF_SIZE) {
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0printf("usb-ccid.c: %s: len larger then max =
(%d>%d). discarding message.\n",
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0__func__, len, BULK_IN_BUF_SIZ=
E);
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0return NULL;
> + =C2=A0 =C2=A0}
> + =C2=A0 =C2=A0if (s->bulk_in_pending_num >=3D BULK_IN_PENDING_NUM) {
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0printf("usb-ccid.c: %s: No free bulk_in buff=
ers. discarding message.\n",
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0__func__);
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0return NULL;
> + =C2=A0 =C2=A0}
> + =C2=A0 =C2=A0bulk_in =3D &s->bulk_in_pending[(s->bulk_in_pending_end++)=
 % BULK_IN_PENDING_NUM];
> + =C2=A0 =C2=A0s->bulk_in_pending_num++;
> + =C2=A0 =C2=A0bulk_in->len =3D len;
> + =C2=A0 =C2=A0return bulk_in->data;
> +}
> +
> +static void ccid_reset(USBCCIDState *s)
> +{
> + =C2=A0 =C2=A0ccid_bulk_in_clear(s);
> + =C2=A0 =C2=A0ccid_clear_pending_answers(s);
> +}
> +
> +static void ccid_detach(USBCCIDState *s)
> +{
> + =C2=A0 =C2=A0ccid_reset(s);
> + =C2=A0 =C2=A0if (s->auto_attach =3D=3D 0 && s->dev.attached) {
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0usb_device_detach(&s->dev);
> + =C2=A0 =C2=A0}
> +}
> +
> +static void ccid_handle_reset(USBDevice *dev)
> +{
> + =C2=A0 =C2=A0USBCCIDState *s =3D DO_UPCAST(USBCCIDState, dev, dev);
> +
> + =C2=A0 =C2=A0DPRINTF(s, 1, "Reset\n");
> +
> + =C2=A0 =C2=A0ccid_reset(s);
> +}
> +
> +static int ccid_handle_control(USBDevice *dev, int request, int value,
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0int index, int length, uint=
8_t *data)
> +{
> + =C2=A0 =C2=A0USBCCIDState *s =3D DO_UPCAST(USBCCIDState, dev, dev);
> + =C2=A0 =C2=A0int ret =3D 0;
> +
> + =C2=A0 =C2=A0DPRINTF(s, 1, "got control %x, value %x\n",request, value)=
;
> + =C2=A0 =C2=A0switch (request) {
> + =C2=A0 =C2=A0case DeviceRequest | USB_REQ_GET_STATUS:
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0data[0] =3D (0 << USB_DEVICE_SELF_POWERED) |
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0(dev->remote_wakeup << USB_DEV=
ICE_REMOTE_WAKEUP);
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0data[1] =3D 0x00;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0ret =3D 2;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0break;
> + =C2=A0 =C2=A0case DeviceOutRequest | USB_REQ_CLEAR_FEATURE:
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0if (value =3D=3D USB_DEVICE_REMOTE_WAKEUP) {
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0dev->remote_wakeup =3D 0;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0} else {
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0goto fail;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0}
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0ret =3D 0;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0break;
> + =C2=A0 =C2=A0case DeviceOutRequest | USB_REQ_SET_FEATURE:
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0if (value =3D=3D USB_DEVICE_REMOTE_WAKEUP) {
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0dev->remote_wakeup =3D 1;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0} else {
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0goto fail;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0}
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0ret =3D 0;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0break;
> + =C2=A0 =C2=A0case DeviceOutRequest | USB_REQ_SET_ADDRESS:
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0dev->addr =3D value;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0ret =3D 0;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0break;
> + =C2=A0 =C2=A0case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0switch(value >> 8) {
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0case USB_DT_DEVICE:
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0memcpy(data, qemu_ccid_dev_des=
criptor,
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 sizeof(q=
emu_ccid_dev_descriptor));
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0ret =3D sizeof(qemu_ccid_dev_d=
escriptor);
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0break;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0case USB_DT_CONFIG:
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0memcpy(data, qemu_ccid_config_=
descriptor,
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 sizeof(q=
emu_ccid_config_descriptor));
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0ret =3D sizeof(qemu_ccid_confi=
g_descriptor);
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0break;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0case USB_DT_STRING:
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0switch(value & 0xff) {
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0case 0:
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0/* language ids =
*/
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0data[0] =3D 4;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0data[1] =3D 3;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0data[2] =3D 0x09=
;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0data[3] =3D 0x04=
;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0ret =3D 4;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0break;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0case 1:
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0/* vendor descri=
ption */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0ret =3D set_usb_=
string(data, CCID_VENDOR_DESCRIPTION);
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0break;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0case 2:
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0/* product descr=
iption */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0ret =3D set_usb_=
string(data, CCID_PRODUCT_DESCRIPTION);
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0break;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0case 3:
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0/* serial number=
 */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0ret =3D set_usb_=
string(data, CCID_SERIAL_NUMBER_STRING);
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0break;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0case 4:
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0/* interface nam=
e */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0ret =3D set_usb_=
string(data, CCID_INTERFACE_NAME);
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0break;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0default:
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0goto fail;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0}
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0break;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0default:
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0goto fail;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0}
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0break;
> + =C2=A0 =C2=A0case DeviceRequest | USB_REQ_GET_CONFIGURATION:
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0data[0] =3D 1;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0ret =3D 1;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0break;
> + =C2=A0 =C2=A0case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0/* Only one configuration - we just ignore t=
he request */
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0ret =3D 0;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0break;
> + =C2=A0 =C2=A0case DeviceRequest | USB_REQ_GET_INTERFACE:
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0data[0] =3D 0;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0ret =3D 1;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0break;
> + =C2=A0 =C2=A0case InterfaceOutRequest | USB_REQ_SET_INTERFACE:
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0ret =3D 0;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0break;
> + =C2=A0 =C2=A0case EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0ret =3D 0;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0break;
> +
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0/* Class specific requests. =C2=A0*/
> + =C2=A0 =C2=A0case InterfaceOutClass | CCID_CONTROL_ABORT:
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0DPRINTF(s, 1, "ccid_control abort UNIMPLEMEN=
TED\n");
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0ret =3D USB_RET_STALL;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0break;
> + =C2=A0 =C2=A0case InterfaceInClass | CCID_CONTROL_GET_CLOCK_FREQUENCIES=
:
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0DPRINTF(s, 1, "ccid_control get clock freque=
ncies UNIMPLEMENTED\n");
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0ret =3D USB_RET_STALL;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0break;
> + =C2=A0 =C2=A0case InterfaceInClass | CCID_CONTROL_GET_DATA_RATES:
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0DPRINTF(s, 1, "ccid_control get data rates U=
NIMPLEMENTED\n");
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0ret =3D USB_RET_STALL;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0break;
> + =C2=A0 =C2=A0default:
> + =C2=A0 =C2=A0fail:
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0DPRINTF(s, 1, "got unsupported/bogus control=
 %x, value %x\n", request, value);
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0ret =3D USB_RET_STALL;
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0break;
> + =C2=A0 =C2=A0}
> + =C2=A0 =C2=A0return ret;
> +}
> +
> +static bool ccid_card_inserted(USBCCIDState *s)
> +{
> + =C2=A0 =C2=A0return s->bmSlotICCState & SLOT_0_STATE_MASK;
> +}
> +
> +static uint8_t ccid_card_status(USBCCIDState *s)
> +{
> + =C2=A0 =C2=A0return ccid_card_inserted(s)
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0? (s->powered ?
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0ICC_STATUS_PRESE=
NT_ACTIVE
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0: ICC_STATUS_PRESENT_IN=
ACTIVE
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0)
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0: ICC_STATUS_NOT_PRESENT;
> +}
> +
> +static uint8_t ccid_calc_status(USBCCIDState *s)
> +{
> + =C2=A0 =C2=A0/* page 55, 6.2.6, calculation of bStatus from bmICCStatus=
 and
> + =C2=A0 =C2=A0 =C2=A0 bmCommandStatus
> + =C2=A0 =C2=A0 */
> + =C2=A0 =C2=A0uint8_t ret =3D ccid_card_status(s) | (s->bmCommandStatus =
<< 6);
> + =C2=A0 =C2=A0DPRINTF(s, 4, "status =3D %d\n", ret);
> + =C2=A0 =C2=A0return ret;
> +}
> +
> +static void ccid_reset_error_status(USBCCIDState* s)
> +{
> + =C2=A0 =C2=A0s->bError =3D ERROR_CMD_NOT_SUPPORTED;
> + =C2=A0 =C2=A0s->bmCommandStatus =3D COMMAND_STATUS_NO_ERROR;
> +}
> +
> +static void ccid_write_slot_status(USBCCIDState* s, CCID_Header* recv)
> +{
> + =C2=A0 =C2=A0CCID_SlotStatus *h =3D ccid_reserve_recv_buf(s, sizeof(CCI=
D_SlotStatus));
> + =C2=A0 =C2=A0if (h =3D=3D NULL) {
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0return;
> + =C2=A0 =C2=A0}
> + =C2=A0 =C2=A0h->b.hdr.bMessageType =3D CCID_MESSAGE_TYPE_RDR_to_PC_Slot=
Status;
> + =C2=A0 =C2=A0h->b.hdr.dwLength =3D 0;
> + =C2=A0 =C2=A0h->b.hdr.bSlot =3D recv->bSlot;
> + =C2=A0 =C2=A0h->b.hdr.bSeq =3D recv->bSeq;
> + =C2=A0 =C2=A0h->b.bStatus =3D ccid_calc_status(s);
> + =C2=A0 =C2=A0h->b.bError =3D s->bError;
> + =C2=A0 =C2=A0h->bClockStatus =3D CLOCK_STATUS_RUNNING;
> + =C2=A0 =C2=A0ccid_reset_error_status(s);
> +}
> +
> +static void ccid_write_parameters(USBCCIDState* s, CCID_Header* recv)
> +{
> + =C2=A0 =C2=A0CCID_Parameter *h;
> + =C2=A0 =C2=A0uint32_t len =3D s->ulProtocolDataStructureSize;
> +
> + =C2=A0 =C2=A0h =3D ccid_reserve_recv_buf(s, sizeof(CCID_Parameter) + le=
n);
> + =C2=A0 =C2=A0if (h =3D=3D NULL) {
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0return;
> + =C2=A0 =C2=A0}
> + =C2=A0 =C2=A0h->b.hdr.bMessageType =3D CCID_MESSAGE_TYPE_RDR_to_PC_Para=
meters;
> + =C2=A0 =C2=A0h->b.hdr.dwLength =3D 0;
> + =C2=A0 =C2=A0h->b.hdr.bSlot =3D recv->bSlot;
> + =C2=A0 =C2=A0h->b.hdr.bSeq =3D recv->bSeq;
> + =C2=A0 =C2=A0h->b.bStatus =3D ccid_calc_status(s);
> + =C2=A0 =C2=A0h->b.bError =3D s->bError;
> + =C2=A0 =C2=A0h->bProtocolNum =3D s->bProtocolNum;
> + =C2=A0 =C2=A0memcpy(h->abProtocolDataStructure, s->abProtocolDataStruct=
ure, len);
> + =C2=A0 =C2=A0ccid_reset_error_status(s);
> +}
> +
> +static void ccid_write_data_block(
> + =C2=A0 =C2=A0USBCCIDState* s, uint8_t slot, uint8_t seq,
> + =C2=A0 =C2=A0const uint8_t* data, uint32_t len)
> +{
> + =C2=A0 =C2=A0CCID_DataBlock *p =3D ccid_reserve_recv_buf(s, sizeof(*p) =
+ len);
> +
> + =C2=A0 =C2=A0if (p =3D=3D NULL) {
> + =C2=A0 =C2=A0 =C2=A0 =C2=A0return;
> + =C2=A0 =C2=A0}
> + =C2=A0 =C2=A0p->b.hdr.bMessageType =3D CCID_MESSAGE_TYPE_RDR_to_PC_Data=
Block;
> + =C2=A0 =C2=A0p->b.hdr.dwLength =3D len;

This assumes that host endianess happens to match what USB uses.