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nuttx/drivers/usbdev/adb.c
Simon Piriou da70eb5c56 usbdev: adb: fix missing break
2020-11-12 21:35:07 -08:00

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/****************************************************************************
* drivers/usbdev/adb.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <nuttx/nuttx.h>
#include <queue.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/kmalloc.h>
#include <nuttx/usb/usb.h>
#include <nuttx/usb/usbdev.h>
#include <nuttx/usb/usbdev_trace.h>
#include <nuttx/usb/adb.h>
#include <nuttx/fs/fs.h>
#include <fcntl.h>
#include <poll.h>
#ifdef CONFIG_USBADB_COMPOSITE
# include <nuttx/usb/composite.h>
# include "composite.h"
#endif
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* FIXME use minor for char device npath */
#define USBADB_CHARDEV_PATH "/dev/adb0"
/* USB Controller */
#ifdef CONFIG_USBDEV_SELFPOWERED
# define USBADB_SELFPOWERED USB_CONFIG_ATTR_SELFPOWER
#else
# define USBADB_SELFPOWERED (0)
#endif
#ifdef CONFIG_USBDEV_REMOTEWAKEUP
# define USBADB_REMOTEWAKEUP USB_CONFIG_ATTR_WAKEUP
#else
# define USBADB_REMOTEWAKEUP (0)
#endif
/* Buffer big enough for any of our descriptors (the config descriptor is the
* biggest).
*/
#define USBADB_MXDESCLEN (64)
#define USBADB_MAXSTRLEN (USBADB_MXDESCLEN-2)
/* Device descriptor values */
#define USBADB_VERSIONNO (0x0101) /* Device version number 1.1 (BCD) */
/* String language */
#define USBADB_STR_LANGUAGE (0x0409) /* en-us */
/* Descriptor strings. If there serial device is part of a composite device
* then the manufacturer, product, and serial number strings will be provided
* by the composite logic.
*/
#ifndef CONFIG_USBADB_COMPOSITE
# define USBADB_MANUFACTURERSTRID (1)
# define USBADB_PRODUCTSTRID (2)
# define USBADB_SERIALSTRID (3)
# define USBADB_CONFIGSTRID (4)
# define USBADB_INTERFACESTRID (5)
#else
# define USBADB_INTERFACESTRID (1)
# define USBADB_NSTRIDS (1)
#endif
#define USBADB_NCONFIGS (1)
#define USBADB_CONFIGID (1)
#define USBADB_CONFIGIDNONE (0)
/* Length of ADB descriptor */
#define USBADB_DESC_TOTALLEN 32
/****************************************************************************
* Private Types
****************************************************************************/
/* Manage char device non blocking io */
typedef struct adb_char_waiter_sem_s
{
sem_t sem;
FAR struct adb_char_waiter_sem_s *next;
} adb_char_waiter_sem_t;
/* Container to support a list of requests */
struct usbadb_wrreq_s
{
FAR sq_entry_t node; /* Implements a singly linked list */
FAR struct usbdev_req_s *req; /* The contained request */
};
struct usbadb_rdreq_s
{
FAR sq_entry_t node; /* Implements a singly linked list */
FAR struct usbdev_req_s *req; /* The contained request */
uint16_t offset; /* Offset to valid data in the RX request */
};
/* This structure describes the internal state of the driver */
struct usbdev_adb_s
{
FAR struct usbdev_s *usbdev; /* usbdev driver pointer */
#ifdef CONFIG_USBADB_COMPOSITE
struct usbdev_devinfo_s devinfo;
#endif
FAR struct usbdev_ep_s *epbulkin; /* Bulk IN endpoint structure */
FAR struct usbdev_ep_s *epbulkout; /* Bulk OUT endpoint structure */
FAR struct usbdev_req_s *ctrlreq; /* Preallocated control request */
uint8_t config; /* USB Configuration number */
struct sq_queue_s txfree; /* Available write request containers */
struct sq_queue_s rxpending; /* Pending read request containers */
/* Pre-allocated request containers. The write requests will be
* linked in a free list (txfree), and used to send requests to
* EPBULKIN; Read requests will be queued in the EBULKOUT.
*/
struct usbadb_wrreq_s wrreqs[CONFIG_USBADB_NWRREQS];
struct usbadb_rdreq_s rdreqs[CONFIG_USBADB_NRDREQS];
/* Char device driver */
sem_t exclsem; /* Enforces device exclusive access */
adb_char_waiter_sem_t *rdsems; /* List of blocking readers */
adb_char_waiter_sem_t *wrsems; /* List of blocking writers */
uint8_t crefs; /* Count of opened instances */
FAR struct pollfd *fds[CONFIG_USBADB_NPOLLWAITERS];
};
struct adb_driver_s
{
struct usbdevclass_driver_s drvr;
struct usbdev_adb_s dev;
};
struct adb_cfgdesc_s
{
#ifndef CONFIG_USBADB_COMPOSITE
struct usb_cfgdesc_s cfgdesc; /* Configuration descriptor */
#endif
struct usb_ifdesc_s ifdesc; /* ADB interface descriptor */
};
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
/* USB class device *********************************************************/
static int usbclass_bind(FAR struct usbdevclass_driver_s *driver,
FAR struct usbdev_s *dev);
static void usbclass_unbind(FAR struct usbdevclass_driver_s *driver,
FAR struct usbdev_s *dev);
static int usbclass_setup(FAR struct usbdevclass_driver_s *driver,
FAR struct usbdev_s *dev,
FAR const struct usb_ctrlreq_s *ctrl, FAR uint8_t *dataout,
size_t outlen);
static void usbclass_disconnect(FAR struct usbdevclass_driver_s *driver,
FAR struct usbdev_s *dev);
static void usbclass_suspend(FAR struct usbdevclass_driver_s *driver,
FAR struct usbdev_s *dev);
static void usbclass_resume(FAR struct usbdevclass_driver_s *driver,
FAR struct usbdev_s *dev);
static FAR struct usbdev_req_s *usbclass_allocreq(FAR struct usbdev_ep_s *ep,
uint16_t len);
/* Char device Operations ***************************************************/
static int adb_char_open(FAR struct file *filep);
static int adb_char_close(FAR struct file *filep);
static ssize_t adb_char_read(FAR struct file *filep, FAR char *buffer,
size_t len);
static ssize_t adb_char_write(FAR struct file *filep,
FAR const char *buffer, size_t len);
static int adb_char_ioctl(FAR struct file *filep, int cmd,
unsigned long arg);
static int adb_char_poll(FAR struct file *filep, FAR struct pollfd *fds,
bool setup);
static void adb_char_notify_readers(FAR struct usbdev_adb_s *priv);
static void adb_char_pollnotify(FAR struct usbdev_adb_s *dev,
pollevent_t eventset);
static void adb_char_on_connect(FAR struct usbdev_adb_s *priv, int connect);
/****************************************************************************
* Private Data
****************************************************************************/
/* USB class device *********************************************************/
static const struct usbdevclass_driverops_s g_adb_driverops =
{
usbclass_bind, /* bind */
usbclass_unbind, /* unbind */
usbclass_setup, /* setup */
usbclass_disconnect, /* disconnect */
usbclass_suspend, /* suspend */
usbclass_resume /* resume */
};
/* Char device **************************************************************/
static const struct file_operations g_adb_fops =
{
adb_char_open, /* open */
adb_char_close, /* close */
adb_char_read, /* read */
adb_char_write, /* write */
0, /* seek */
adb_char_ioctl, /* ioctl */
adb_char_poll /* poll */
};
/* USB descriptor ***********************************************************/
#ifndef CONFIG_USBADB_COMPOSITE
static const struct usb_devdesc_s g_adb_devdesc =
{
.len = USB_SIZEOF_DEVDESC, /* Descriptor length */
.type = USB_DESC_TYPE_DEVICE, /* Descriptor type */
.usb = /* USB version */
{
LSBYTE(0x0200),
MSBYTE(0x0200)
},
.classid = 0, /* Device class */
.subclass = 0, /* Device sub-class */
.protocol = 0, /* Device protocol */
.mxpacketsize = CONFIG_USBADB_EP0MAXPACKET, /* Max packet size (ep0) */
.vendor = /* Vendor ID */
{
LSBYTE(CONFIG_USBADB_VENDORID),
MSBYTE(CONFIG_USBADB_VENDORID)
},
.product = /* Product ID */
{ LSBYTE(CONFIG_USBADB_PRODUCTID),
MSBYTE(CONFIG_USBADB_PRODUCTID)
},
.device = /* Device ID */
{ LSBYTE(USBADB_VERSIONNO),
MSBYTE(USBADB_VERSIONNO)
},
.imfgr = USBADB_MANUFACTURERSTRID, /* Manufacturer */
.iproduct = USBADB_PRODUCTSTRID, /* Product */
.serno = USBADB_SERIALSTRID, /* Serial number */
.nconfigs = 1 /* Number of configurations */
};
#endif
static const struct adb_cfgdesc_s g_adb_cfgdesc =
{
#ifndef CONFIG_USBADB_COMPOSITE
{
.len = USB_SIZEOF_CFGDESC, /* Descriptor length */
.type = USB_DESC_TYPE_CONFIG, /* Descriptor type */
.totallen =
{
LSBYTE(USBADB_DESC_TOTALLEN), /* LS Total length */
MSBYTE(USBADB_DESC_TOTALLEN) /* MS Total length */
},
.ninterfaces = 1, /* Number of interfaces */
.cfgvalue = 1, /* Configuration value */
.icfg = USBADB_CONFIGSTRID, /* Configuration */
.attr = USB_CONFIG_ATTR_ONE |
USBADB_SELFPOWERED |
USBADB_REMOTEWAKEUP, /* Attributes */
.mxpower = (CONFIG_USBDEV_MAXPOWER + 1) / 2 /* Max power (mA/2) */
},
#endif
{
.len = USB_SIZEOF_IFDESC,
.type = USB_DESC_TYPE_INTERFACE,
.ifno = 0,
.alt = 0,
.neps = 2,
.classid = USB_CLASS_VENDOR_SPEC,
.subclass = 0x42,
.protocol = 0x01,
.iif = USBADB_INTERFACESTRID
}
};
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: usbclass_allocreq
*
* Description:
* Allocate request buffer for a specified endpoint.
*
****************************************************************************/
static FAR struct usbdev_req_s *usbclass_allocreq(FAR struct usbdev_ep_s *ep,
uint16_t len)
{
FAR struct usbdev_req_s *req;
req = EP_ALLOCREQ(ep);
if (req != NULL)
{
req->len = len;
req->buf = EP_ALLOCBUFFER(ep, len);
if (req->buf == NULL)
{
EP_FREEREQ(ep, req);
req = NULL;
}
}
return req;
}
/****************************************************************************
* Name: usbclass_copy_epdesc
*
* Description:
* Copies the requested Endpoint Description into the buffer given.
* Returns the number of Bytes filled in ( sizeof(struct usb_epdesc_s) ).
*
****************************************************************************/
static int usbclass_copy_epdesc(int epid, FAR struct usb_epdesc_s *epdesc,
FAR struct usbdev_devinfo_s *devinfo,
bool hispeed)
{
#ifndef CONFIG_USBDEV_DUALSPEED
UNUSED(hispeed);
#endif
epdesc->len = USB_SIZEOF_EPDESC; /* Descriptor length */
epdesc->type = USB_DESC_TYPE_ENDPOINT; /* Descriptor type */
epdesc->attr = USB_EP_ATTR_XFER_BULK | /* Endpoint attributes */
USB_EP_ATTR_NO_SYNC |
USB_EP_ATTR_USAGE_DATA;
epdesc->interval = 0; /* Interval */
if (epid == USBADB_EP_BULKIN_IDX) /* Bulk IN endpoint */
{
/* Endpoint address */
#ifdef CONFIG_USBADB_COMPOSITE
epdesc->addr = USB_EPIN(devinfo->epno[USBADB_EP_BULKIN_IDX]);
#else
epdesc->addr = USB_EPIN(CONFIG_USBADB_EPBULKIN);
#endif
#ifdef CONFIG_USBDEV_DUALSPEED
if (hispeed)
{
/* Maximum packet size (high speed) */
epdesc->mxpacketsize[0] = LSBYTE(CONFIG_USBADB_EPBULKIN_HSSIZE);
epdesc->mxpacketsize[1] = MSBYTE(CONFIG_USBADB_EPBULKIN_HSSIZE);
}
else
#endif
{
/* Maximum packet size (full speed) */
epdesc->mxpacketsize[0] = LSBYTE(CONFIG_USBADB_EPBULKIN_FSSIZE);
epdesc->mxpacketsize[1] = MSBYTE(CONFIG_USBADB_EPBULKIN_FSSIZE);
}
}
else /* USBADB_EP_BULKOUT_IDX: Bulk OUT endpoint */
{
/* Endpoint address */
#ifdef CONFIG_USBADB_COMPOSITE
epdesc->addr = USB_EPOUT(devinfo->epno[USBADB_EP_BULKOUT_IDX]);
#else
epdesc->addr = USB_EPOUT(CONFIG_USBADB_EPBULKOUT);
#endif
#ifdef CONFIG_USBDEV_DUALSPEED
if (hispeed)
{
/* Maximum packet size (high speed) */
epdesc->mxpacketsize[0] = LSBYTE(CONFIG_USBADB_EPBULKOUT_HSSIZE);
epdesc->mxpacketsize[1] = MSBYTE(CONFIG_USBADB_EPBULKOUT_HSSIZE);
}
else
#endif
{
/* Maximum packet size (full speed) */
epdesc->mxpacketsize[0] = LSBYTE(CONFIG_USBADB_EPBULKOUT_FSSIZE);
epdesc->mxpacketsize[1] = MSBYTE(CONFIG_USBADB_EPBULKOUT_FSSIZE);
}
}
return sizeof(struct usb_epdesc_s);
}
/****************************************************************************
* Name: usb_adb_submit_rdreq
*
* Description:
* Submits the bulk OUT read request. Takes care not to submit the request
* when the RX packet buffer is already in use.
*
* Input Parameters:
* priv: pointer to ADB device driver structure
*
* Returned Value:
* The return value of the EP_SUBMIT operation
*
****************************************************************************/
static int usb_adb_submit_rdreq(FAR struct usbdev_adb_s *priv,
FAR struct usbadb_rdreq_s *rdcontainer)
{
FAR struct usbdev_req_s *req;
FAR struct usbdev_ep_s *ep;
int ret;
DEBUGASSERT(priv != NULL && rdcontainer != NULL);
req = rdcontainer->req;
DEBUGASSERT(req != NULL);
/* Requeue the read request */
ep = priv->epbulkout;
req->len = ep->maxpacket;
ret = EP_SUBMIT(ep, req);
if (ret != OK)
{
usbtrace(TRACE_CLSERROR(USBSER_TRACEERR_RDSUBMIT),
(uint16_t)-req->result);
}
return ret;
}
/****************************************************************************
* Name: usb_adb_wrcomplete
*
* Description:
* Handle completion of write request. This function probably executes
* in the context of an interrupt handler.
*
****************************************************************************/
static void usb_adb_wrcomplete(FAR struct usbdev_ep_s *ep,
FAR struct usbdev_req_s *req)
{
FAR struct usbadb_wrreq_s *wrcontainer;
FAR struct usbdev_adb_s *priv;
irqstate_t flags;
/* Sanity check */
#ifdef CONFIG_DEBUG_FEATURES
if (!ep || !ep->priv || !req || !req->priv)
{
usbtrace(TRACE_CLSERROR(USBSER_TRACEERR_INVALIDARG), 0);
return;
}
#endif
/* Extract references to private data */
priv = (FAR struct usbdev_adb_s *)ep->priv;
wrcontainer = (FAR struct usbadb_wrreq_s *)req->priv;
/* Return the write request to the free list */
flags = enter_critical_section();
sq_addlast(&wrcontainer->node, &priv->txfree);
/* Check for termination condition */
switch (req->result)
{
case OK: /* Normal completion */
{
usbtrace(TRACE_CLASSWRCOMPLETE, priv->nwrq);
/* Notify all waiting writers that write req is available */
adb_char_waiter_sem_t *cur_sem = priv->wrsems;
while (cur_sem != NULL)
{
nxsem_post(&cur_sem->sem);
cur_sem = cur_sem->next;
}
priv->wrsems = NULL;
/* Notify all poll/select waiters */
adb_char_pollnotify(priv, POLLOUT);
}
break;
case -ESHUTDOWN: /* Disconnection */
{
usbtrace(TRACE_CLSERROR(USBSER_TRACEERR_WRSHUTDOWN), priv->nwrq);
}
break;
default: /* Some other error occurred */
{
usbtrace(TRACE_CLSERROR(USBSER_TRACEERR_WRUNEXPECTED),
(uint16_t)-req->result);
}
break;
}
leave_critical_section(flags);
}
/****************************************************************************
* Name: usb_adb_rdcomplete
*
* Description:
* Handle completion of read request on the bulk OUT endpoint.
*
****************************************************************************/
static void usb_adb_rdcomplete(FAR struct usbdev_ep_s *ep,
FAR struct usbdev_req_s *req)
{
FAR struct usbadb_rdreq_s *rdcontainer;
FAR struct usbdev_adb_s *priv;
irqstate_t flags;
/* Sanity check */
#ifdef CONFIG_DEBUG_FEATURES
if (!ep || !ep->priv || !req)
{
usbtrace(TRACE_CLSERROR(USBSER_TRACEERR_INVALIDARG), 0);
return;
}
#endif
/* Extract references to private data */
priv = (FAR struct usbdev_adb_s *)ep->priv;
rdcontainer = (FAR struct usbadb_rdreq_s *)req->priv;
/* Process the received data unless this is some unusual condition */
switch (req->result)
{
case 0: /* Normal completion */
usbtrace(TRACE_CLASSRDCOMPLETE, priv->nrdq);
/* Restart request due to either no reader or
* empty frame received.
*/
if (priv->crefs == 0)
{
uwarn("drop frame\n");
goto restart_req;
}
if (req->xfrd <= 0)
{
goto restart_req;
}
/* Queue request and notify readers */
flags = enter_critical_section();
/* Put request on RX pending queue */
rdcontainer->offset = 0;
sq_addlast(&rdcontainer->node, &priv->rxpending);
adb_char_notify_readers(priv);
leave_critical_section(flags);
return;
case -ESHUTDOWN: /* Disconnection */
usbtrace(TRACE_CLSERROR(USBSER_TRACEERR_RDSHUTDOWN), 0);
return;
default: /* Some other error occurred */
usbtrace(TRACE_CLSERROR(USBSER_TRACEERR_RDUNEXPECTED),
(uint16_t)-req->result);
goto restart_req;
};
restart_req:
/* Restart request */
usb_adb_submit_rdreq(priv, rdcontainer);
}
/****************************************************************************
* Name: usbclass_resetconfig
*
* Description:
* Mark the device as not configured and disable all endpoints.
*
****************************************************************************/
static void usbclass_resetconfig(FAR struct usbdev_adb_s *priv)
{
/* Are we configured? */
if (priv->config != USBADB_CONFIGIDNONE)
{
/* Yes.. but not anymore */
adb_char_on_connect(priv, 0);
/* Disable endpoints. This should force completion of all pending
* transfers.
*/
EP_DISABLE(priv->epbulkin);
EP_DISABLE(priv->epbulkout);
}
priv->config = USBADB_CONFIGIDNONE;
}
/****************************************************************************
* Name: usbclass_setconfig
*
* Description:
* Set the device configuration by allocating and configuring endpoints and
* by allocating and queue read and write requests.
*
****************************************************************************/
static int usbclass_setconfig(FAR struct usbdev_adb_s *priv, uint8_t config)
{
struct usb_epdesc_s epdesc;
bool hispeed = false;
int i;
int ret = 0;
#ifdef CONFIG_DEBUG_FEATURES
if (priv == NULL)
{
usbtrace(TRACE_CLSERROR(USBSER_TRACEERR_INVALIDARG), 0);
return -EIO;
}
#endif
#ifdef CONFIG_USBDEV_DUALSPEED
hispeed = (priv->usbdev->speed == USB_SPEED_HIGH);
#endif
if (config == priv->config)
{
/* Already configured -- Do nothing */
usbtrace(TRACE_CLSERROR(USBSER_TRACEERR_ALREADYCONFIGURED), 0);
return 0;
}
/* Discard the previous configuration data */
usbclass_resetconfig(priv);
/* Was this a request to simply discard the current configuration? */
if (config == USBADB_CONFIGIDNONE)
{
usbtrace(TRACE_CLSERROR(USBSER_TRACEERR_CONFIGNONE), 0);
return 0;
}
/* We only accept one configuration */
if (config != USBADB_CONFIGID)
{
usbtrace(TRACE_CLSERROR(USBSER_TRACEERR_CONFIGIDBAD), 0);
return -EINVAL;
}
/* Configure the IN bulk endpoint */
#ifdef CONFIG_USBADB_COMPOSITE
usbclass_copy_epdesc(USBADB_EP_BULKIN_IDX, &epdesc,
&priv->devinfo, hispeed);
#else
usbclass_copy_epdesc(USBADB_EP_BULKIN_IDX, &epdesc, NULL, hispeed);
#endif
ret = EP_CONFIGURE(priv->epbulkin, &epdesc, false);
if (ret < 0)
{
usbtrace(TRACE_CLSERROR(USBSER_TRACEERR_EPBULKINCONFIGFAIL), 0);
goto errout;
}
priv->epbulkin->priv = priv;
/* Configure the OUT bulk endpoint */
#ifdef CONFIG_USBADB_COMPOSITE
usbclass_copy_epdesc(USBADB_EP_BULKOUT_IDX, &epdesc,
&priv->devinfo, hispeed);
#else
usbclass_copy_epdesc(USBADB_EP_BULKOUT_IDX, &epdesc, NULL, hispeed);
#endif
ret = EP_CONFIGURE(priv->epbulkout, &epdesc, true);
if (ret < 0)
{
usbtrace(TRACE_CLSERROR(USBSER_TRACEERR_EPBULKOUTCONFIGFAIL), 0);
goto errout;
}
priv->epbulkout->priv = priv;
/* Queue read requests in the bulk OUT endpoint */
for (i = 0; i < CONFIG_USBADB_NRDREQS; i++)
{
priv->rdreqs[i].req->callback = usb_adb_rdcomplete;
ret = usb_adb_submit_rdreq(priv, &priv->rdreqs[i]);
if (ret != OK)
{
/* TODO cancel submitted requests */
goto errout;
}
}
/* We are successfully configured. Char device is now active */
priv->config = config;
adb_char_on_connect(priv, 1);
return OK;
errout:
usbclass_resetconfig(priv);
return ret;
}
/****************************************************************************
* Name: usbclass_ep0incomplete
*
* Description:
* Handle completion of EP0 control operations
*
****************************************************************************/
static void usbclass_ep0incomplete(FAR struct usbdev_ep_s *ep,
FAR struct usbdev_req_s *req)
{
if (req->result || req->xfrd != req->len)
{
usbtrace(TRACE_CLSERROR(USBSER_TRACEERR_REQRESULT),
(uint16_t)-req->result);
}
}
#ifdef CONFIG_USBDEV_DUALSPEED
static int16_t usbclass_mkcfgdesc(FAR uint8_t *buf,
FAR struct usbdev_devinfo_s *devinfo,
uint8_t speed, uint8_t type);
#else
static int16_t usbclass_mkcfgdesc(FAR uint8_t *buf,
FAR struct usbdev_devinfo_s *devinfo)
#endif
{
bool hispeed = false;
FAR struct usb_epdesc_s *epdesc;
FAR struct adb_cfgdesc_s *dest;
#ifdef CONFIG_USBDEV_DUALSPEED
hispeed = (speed == USB_SPEED_HIGH);
/* Check for switches between high and full speed */
if (type == USB_DESC_TYPE_OTHERSPEEDCONFIG)
{
hispeed = !hispeed;
}
#endif
dest = (FAR struct adb_cfgdesc_s *)buf;
epdesc = (FAR struct usb_epdesc_s *)(buf + sizeof(g_adb_cfgdesc));
memcpy(dest, &g_adb_cfgdesc, sizeof(g_adb_cfgdesc));
#ifdef CONFIG_USBADB_COMPOSITE
usbclass_copy_epdesc(USBADB_EP_BULKIN_IDX, &epdesc[0], devinfo, hispeed);
usbclass_copy_epdesc(USBADB_EP_BULKOUT_IDX, &epdesc[1], devinfo, hispeed);
#else
usbclass_copy_epdesc(USBADB_EP_BULKIN_IDX, &epdesc[0], NULL, hispeed);
usbclass_copy_epdesc(USBADB_EP_BULKOUT_IDX, &epdesc[1], NULL, hispeed);
#endif
#ifdef CONFIG_USBADB_COMPOSITE
/* For composite device, apply possible offset to the interface numbers */
dest->ifdesc.ifno = devinfo->ifnobase;
dest->ifdesc.iif = devinfo->strbase + USBADB_INTERFACESTRID;
#endif
return sizeof(g_adb_cfgdesc)+2*USB_SIZEOF_EPDESC;
}
static int usbclass_mkstrdesc(uint8_t id, FAR struct usb_strdesc_s *strdesc)
{
FAR const char *str;
int len;
int ndata;
int i;
switch (id)
{
#ifndef CONFIG_USBADB_COMPOSITE
case 0:
{
/* Descriptor 0 is the language id */
strdesc->len = 4;
strdesc->type = USB_DESC_TYPE_STRING;
strdesc->data[0] = LSBYTE(USBADB_STR_LANGUAGE);
strdesc->data[1] = MSBYTE(USBADB_STR_LANGUAGE);
return 4;
}
case USBADB_MANUFACTURERSTRID:
str = CONFIG_USBADB_VENDORSTR;
break;
case USBADB_PRODUCTSTRID:
str = CONFIG_USBADB_PRODUCTSTR;
break;
case USBADB_SERIALSTRID:
str = CONFIG_USBADB_SERIALSTR;
break;
case USBADB_CONFIGSTRID:
str = CONFIG_USBADB_CONFIGSTR;
break;
#endif
/* Composite driver removes offset before calling mkstrdesc() */
case USBADB_INTERFACESTRID:
str = CONFIG_USBADB_INTERFACESTR;
break;
default:
return -EINVAL;
}
/* The string is utf16-le. The poor man's utf-8 to utf16-le
* conversion below will only handle 7-bit en-us ascii
*/
len = strlen(str);
if (len > (USBADB_MAXSTRLEN / 2))
{
len = (USBADB_MAXSTRLEN / 2);
}
for (i = 0, ndata = 0; i < len; i++, ndata += 2)
{
strdesc->data[ndata] = str[i];
strdesc->data[ndata + 1] = 0;
}
strdesc->len = ndata + 2;
strdesc->type = USB_DESC_TYPE_STRING;
return strdesc->len;
}
/****************************************************************************
* USB Class Driver Methods
****************************************************************************/
/****************************************************************************
* Name: usbclass_bind
*
* Description:
* Invoked when the driver is bound to a USB device driver
*
****************************************************************************/
static int usbclass_bind(FAR struct usbdevclass_driver_s *driver,
FAR struct usbdev_s *dev)
{
int ret;
int i;
uint16_t reqlen;
irqstate_t flags;
FAR struct usbdev_adb_s *priv = &((FAR struct adb_driver_s *)driver)->dev;
usbtrace(TRACE_CLASSBIND, 0);
priv->ctrlreq = usbclass_allocreq(dev->ep0, USBADB_MXDESCLEN);
if (priv->ctrlreq == NULL)
{
usbtrace(TRACE_CLSERROR(USBSER_TRACEERR_ALLOCCTRLREQ), 0);
return -ENOMEM;
}
priv->ctrlreq->callback = usbclass_ep0incomplete;
/* Pre-allocate all endpoints... the endpoints will not be functional
* until the SET CONFIGURATION request is processed in usbclass_setconfig.
* This is done here because there may be calls to kmm_malloc and the SET
* CONFIGURATION processing probably occurs within interrupt handling
* logic where kmm_malloc calls will fail.
*/
/* Pre-allocate the IN bulk endpoint */
priv->epbulkin = DEV_ALLOCEP(dev,
#ifdef CONFIG_USBADB_COMPOSITE
USB_EPIN(priv->devinfo.epno[USBADB_EP_BULKIN_IDX]),
#else
USB_EPIN(CONFIG_USBADB_EPBULKIN),
#endif
true,
USB_EP_ATTR_XFER_BULK);
if (!priv->epbulkin)
{
usbtrace(TRACE_CLSERROR(USBSER_TRACEERR_EPBULKINALLOCFAIL), 0);
ret = -ENODEV;
goto errout;
}
priv->epbulkin->priv = priv;
/* Pre-allocate the OUT bulk endpoint */
priv->epbulkout = DEV_ALLOCEP(dev,
#ifdef CONFIG_USBADB_COMPOSITE
USB_EPOUT(priv->devinfo.epno[USBADB_EP_BULKOUT_IDX]),
#else
USB_EPOUT(CONFIG_USBADB_EPBULKOUT),
#endif
false,
USB_EP_ATTR_XFER_BULK);
if (!priv->epbulkout)
{
usbtrace(TRACE_CLSERROR(USBSER_TRACEERR_EPBULKOUTALLOCFAIL), 0);
ret = -ENODEV;
goto errout;
}
priv->epbulkout->priv = priv;
/* Pre-allocate read requests. The buffer size is one full packet. */
#ifdef CONFIG_USBDEV_DUALSPEED
reqlen = CONFIG_USBADB_EPBULKOUT_HSSIZE;
#else
reqlen = CONFIG_USBADB_EPBULKOUT_FSSIZE;
#endif
for (i = 0; i < CONFIG_USBADB_NRDREQS; i++)
{
FAR struct usbadb_rdreq_s *rdcontainer;
rdcontainer = &priv->rdreqs[i];
rdcontainer->req = usbclass_allocreq(priv->epbulkout, reqlen);
if (rdcontainer->req == NULL)
{
usbtrace(TRACE_CLSERROR(USBSER_TRACEERR_RDALLOCREQ), -ENOMEM);
ret = -ENOMEM;
goto errout;
}
rdcontainer->offset = 0;
rdcontainer->req->priv = rdcontainer;
rdcontainer->req->callback = usb_adb_rdcomplete;
}
/* Pre-allocate write requests. The buffer size is one full packet. */
#ifdef CONFIG_USBDEV_DUALSPEED
reqlen = CONFIG_USBADB_EPBULKIN_HSSIZE;
#else
reqlen = CONFIG_USBADB_EPBULKIN_FSSIZE;
#endif
for (i = 0; i < CONFIG_USBADB_NWRREQS; i++)
{
FAR struct usbadb_wrreq_s *wrcontainer;
wrcontainer = &priv->wrreqs[i];
wrcontainer->req = usbclass_allocreq(priv->epbulkin, reqlen);
if (wrcontainer->req == NULL)
{
usbtrace(TRACE_CLSERROR(USBSER_TRACEERR_WRALLOCREQ), -ENOMEM);
ret = -ENOMEM;
goto errout;
}
wrcontainer->req->priv = wrcontainer;
wrcontainer->req->callback = usb_adb_wrcomplete;
flags = enter_critical_section();
sq_addlast(&wrcontainer->node, &priv->txfree);
leave_critical_section(flags);
}
/* Report if we are selfpowered (unless we are part of a
* composite device)
*/
#ifndef CONFIG_USBADB_COMPOSITE
#ifdef CONFIG_USBDEV_SELFPOWERED
DEV_SETSELFPOWERED(dev);
#endif
/* And pull-up the data line for the soft connect function (unless we are
* part of a composite device)
*/
DEV_CONNECT(dev);
#endif
return OK;
errout:
usbclass_unbind(driver, dev);
return ret;
}
/****************************************************************************
* Name: usbclass_unbind
*
* Description:
* Invoked when the driver is unbound from a USB device driver
*
****************************************************************************/
static void usbclass_unbind(FAR struct usbdevclass_driver_s *driver,
FAR struct usbdev_s *dev)
{
usbtrace(TRACE_CLASSUNBIND, 0);
#warning Missing logic
}
/****************************************************************************
* Name: usbclass_setup
*
* Description:
* Invoked for ep0 control requests. This function probably executes
* in the context of an interrupt handler.
*
****************************************************************************/
static int usbclass_setup(FAR struct usbdevclass_driver_s *driver,
FAR struct usbdev_s *dev,
FAR const struct usb_ctrlreq_s *ctrl,
FAR uint8_t *dataout, size_t outlen)
{
uint16_t value;
uint16_t len;
int ret = -EOPNOTSUPP;
FAR struct usbdev_adb_s *priv;
FAR struct usbdev_req_s *ctrlreq;
#ifdef CONFIG_DEBUG_FEATURES
if (!driver || !dev || !dev->ep0 || !ctrl)
{
usbtrace(TRACE_CLSERROR(USBSER_TRACEERR_INVALIDARG), 0);
return -EIO;
}
#endif
/* Extract reference to private data */
usbtrace(TRACE_CLASSSETUP, ctrl->req);
priv = &((FAR struct adb_driver_s *)driver)->dev;
#ifdef CONFIG_DEBUG_FEATURES
if (!priv || !priv->ctrlreq)
{
usbtrace(TRACE_CLSERROR(USBSER_TRACEERR_EP0NOTBOUND), 0);
return -ENODEV;
}
#endif
ctrlreq = priv->ctrlreq;
/* Extract the little-endian 16-bit values to host order */
value = GETUINT16(ctrl->value);
len = GETUINT16(ctrl->len);
uinfo("type=%02x req=%02x value=%04x index=%04x len=%04x\n",
ctrl->type, ctrl->req, value, index, len);
switch (ctrl->type & USB_REQ_TYPE_MASK)
{
case USB_REQ_TYPE_STANDARD:
{
switch (ctrl->req)
{
#ifndef CONFIG_USBADB_COMPOSITE
case USB_REQ_GETDESCRIPTOR:
{
/* The value field specifies the descriptor type in the
* MS byte and the descriptor index in the LS byte
* (order is little endian)
*/
switch (ctrl->value[1])
{
/* If the device is used in as part of a composite
* device, then the device descriptor is provided by logic
* in the composite device implementation.
*/
case USB_DESC_TYPE_DEVICE:
{
ret = USB_SIZEOF_DEVDESC;
memcpy(ctrlreq->buf, &g_adb_devdesc, ret);
}
break;
case USB_DESC_TYPE_DEVICEQUALIFIER:
break;
case USB_DESC_TYPE_OTHERSPEEDCONFIG:
break;
/* If the serial device is used in as part of a composite
* device, then the configuration descriptor is provided by
* logic in the composite device implementation.
*/
case USB_DESC_TYPE_CONFIG:
{
ret = usbclass_mkcfgdesc(ctrlreq->buf, NULL);
}
break;
/* If the serial device is used in as part of a composite
* device, then the language string descriptor is provided
* by logic in the composite device implementation.
*/
case USB_DESC_TYPE_STRING:
{
/* index == language code. */
ret =
usbclass_mkstrdesc(ctrl->value[0],
(FAR struct usb_strdesc_s *)
ctrlreq->buf);
}
break;
default:
{
usbtrace(
TRACE_CLSERROR(USBSER_TRACEERR_GETUNKNOWNDESC),
value);
}
break;
}
}
break;
/* If the serial device is used in as part of a composite device,
* then the overall composite class configuration is managed by
* logic in the composite device implementation.
*/
case USB_REQ_GETCONFIGURATION:
{
if (ctrl->type == USB_DIR_IN)
{
*(FAR uint8_t *)ctrlreq->buf = priv->config;
ret = 1;
}
}
break;
#endif /* !CONFIG_USBADB_COMPOSITE */
case USB_REQ_SETCONFIGURATION:
{
if (ctrl->type == 0)
{
ret = usbclass_setconfig(priv, value);
}
}
break;
default:
usbtrace(TRACE_CLSERROR(USBSER_TRACEERR_UNSUPPORTEDSTDREQ),
ctrl->req);
break;
}
}
case USB_REQ_TYPE_CLASS:
{
/* ADB-Specific Requests */
usbtrace(TRACE_CLSERROR(USBSER_TRACEERR_UNSUPPORTEDCLASSREQ),
ctrl->req);
break;
}
default:
{
usbtrace(
TRACE_CLSERROR(USBSER_TRACEERR_UNSUPPORTEDTYPE),
ctrl->type);
}
}
#ifndef CONFIG_USBADB_COMPOSITE
/* Respond to the setup command if data was returned. On an error return
* value (ret < 0), the USB driver will stall.
*/
if (ret >= 0)
{
ctrlreq->len = (len < ret) ? len : ret;
ctrlreq->flags = USBDEV_REQFLAGS_NULLPKT;
/* Send the response -- either directly to the USB controller or
* indirectly in the case where this class is a member of a composite
* device.
*/
ret = EP_SUBMIT(dev->ep0, ctrlreq);
if (ret < 0)
{
usbtrace(TRACE_CLSERROR(USBSER_TRACEERR_EPRESPQ), (uint16_t)-ret);
ctrlreq->result = OK;
usbclass_ep0incomplete(dev->ep0, ctrlreq);
}
}
#else
/* Composite should send only one resquest for USB_REQ_SETCONFIGURATION.
* Hence ADB driver cannot submit to ep0; composite has to handle it.
*/
#warning composite_ep0submit() seems broken so skip it in case of composite
#endif /* !CONFIG_USBADB_COMPOSITE */
/* Returning a negative value will cause a STALL */
return ret;
}
/****************************************************************************
* Name: usbclass_disconnect
*
* Description:
* Invoked after all transfers have been stopped, when the host is
* disconnected. This function is probably called from the context of an
* interrupt handler.
*
****************************************************************************/
static void usbclass_disconnect(FAR struct usbdevclass_driver_s *driver,
FAR struct usbdev_s *dev)
{
FAR struct usbdev_adb_s *priv;
irqstate_t flags;
usbtrace(TRACE_CLASSDISCONNECT, 0);
#ifdef CONFIG_DEBUG_FEATURES
if (!driver || !dev || !dev->ep0)
{
usbtrace(TRACE_CLSERROR(USBSER_TRACEERR_INVALIDARG), 0);
return;
}
#endif
/* Extract reference to private data */
priv = &((FAR struct adb_driver_s *)driver)->dev;
#ifdef CONFIG_DEBUG_FEATURES
if (!priv)
{
usbtrace(TRACE_CLSERROR(USBSER_TRACEERR_EP0NOTBOUND), 0);
return;
}
#endif
/* FIXME do we have to lock interrupts here ? */
flags = enter_critical_section();
/* Reset the configuration */
usbclass_resetconfig(priv);
leave_critical_section(flags);
/* Perform the soft connect function so that we will we can be
* re-enumerated (unless we are part of a composite device)
*/
#ifndef CONFIG_USBDEV_COMPOSITE
DEV_CONNECT(dev);
#endif
}
/****************************************************************************
* Name: usbclass_suspend
*
* Description:
* Handle the USB suspend event.
*
****************************************************************************/
static void usbclass_suspend(FAR struct usbdevclass_driver_s *driver,
FAR struct usbdev_s *dev)
{
FAR struct usbdev_adb_s *priv = &((FAR struct adb_driver_s *)driver)->dev;
usbtrace(TRACE_CLASSSUSPEND, 0);
if (priv->config != USBADB_CONFIGIDNONE)
{
adb_char_on_connect(priv, 0);
}
}
/****************************************************************************
* Name: usbclass_resume
*
* Description:
* Handle the USB resume event.
*
****************************************************************************/
static void usbclass_resume(FAR struct usbdevclass_driver_s *driver,
FAR struct usbdev_s *dev)
{
FAR struct usbdev_adb_s *priv = &((FAR struct adb_driver_s *)driver)->dev;
usbtrace(TRACE_CLASSRESUME, 0);
if (priv->config != USBADB_CONFIGIDNONE)
{
adb_char_on_connect(priv, 1);
}
}
/****************************************************************************
* Name: usbclass_classobject
*
* Description:
* Register USB driver and return the class object.
*
* Returned Value:
* 0 on success, negative error code on failure.
*
****************************************************************************/
static int usbclass_classobject(int minor,
FAR struct usbdev_devinfo_s *devinfo,
FAR struct usbdevclass_driver_s **classdev)
{
int ret;
FAR struct adb_driver_s *alloc;
alloc = (FAR struct adb_driver_s *)
kmm_zalloc(sizeof(struct adb_driver_s));
if (!alloc)
{
usbtrace(TRACE_CLSERROR(USBSER_TRACEERR_ALLOCDEVSTRUCT), 0);
return -ENOMEM;
}
/* Initialize the USB class driver structure */
#ifdef CONFIG_USBDEV_DUALSPEED
alloc->drvr.speed = USB_SPEED_HIGH;
#else
alloc->drvr.speed = USB_SPEED_FULL;
#endif
alloc->drvr.ops = &g_adb_driverops;
sq_init(&alloc->dev.rxpending);
sq_init(&alloc->dev.txfree);
#ifdef CONFIG_USBADB_COMPOSITE
/* Save the caller provided device description (composite only) */
memcpy(&alloc->dev.devinfo, devinfo,
sizeof(struct usbdev_devinfo_s));
#endif
/* Initialize the char device structure */
nxsem_init(&alloc->dev.exclsem, 0, 1);
alloc->dev.crefs = 0;
/* Register char device driver */
/* FIXME use minor in device name */
ret = register_driver(USBADB_CHARDEV_PATH, &g_adb_fops, 0666, &alloc->dev);
if (ret < 0)
{
uerr("Failed to register char device");
goto exit_free_driver;
}
*classdev = &alloc->drvr;
return OK;
exit_free_driver:
kmm_free(alloc);
return ret;
}
/****************************************************************************
* Name: usbclass_uninitialize
*
* Description:
* Free allocated memory
*
* Returned Value:
* 0 on success, negative error code on failure.
*
****************************************************************************/
static void usbclass_uninitialize(FAR struct usbdevclass_driver_s *classdev)
{
FAR struct adb_driver_s *alloc = container_of(
classdev, FAR struct adb_driver_s, drvr);
#warning FIXME Maybe missing logic here
unregister_driver(USBADB_CHARDEV_PATH);
kmm_free(alloc);
}
/****************************************************************************
* Char Device Driver Methods
****************************************************************************/
/****************************************************************************
* Name: adb_char_notify_readers
*
* Description:
* Notify threads waiting to read device. This function must be called
* with interrupt disabled.
*
****************************************************************************/
static void adb_char_notify_readers(FAR struct usbdev_adb_s *priv)
{
/* Notify all of the waiting readers */
adb_char_waiter_sem_t *cur_sem = priv->rdsems;
while (cur_sem != NULL)
{
nxsem_post(&cur_sem->sem);
cur_sem = cur_sem->next;
}
priv->rdsems = NULL;
/* Notify all poll/select waiters */
adb_char_pollnotify(priv, POLLIN);
}
/****************************************************************************
* Name: adb_char_pollnotify
*
* Description:
* Notify threads waiting for device event. This function must be called
* with interrupt disabled.
*
****************************************************************************/
static void adb_char_pollnotify(FAR struct usbdev_adb_s *dev,
pollevent_t eventset)
{
FAR struct pollfd *fds;
int i;
for (i = 0; i < CONFIG_USBADB_NPOLLWAITERS; i++)
{
fds = dev->fds[i];
if (fds)
{
fds->revents |= eventset & (fds->events | POLLERR | POLLHUP);
if (fds->revents != 0)
{
nxsem_post(fds->sem);
}
}
}
}
/****************************************************************************
* Name: adb_char_open
*
* Description:
* Open adb device. Only one open() instance is supported.
*
****************************************************************************/
static int adb_char_open(FAR struct file *filep)
{
FAR struct inode *inode = filep->f_inode;
FAR struct usbdev_adb_s *priv = inode->i_private;
int ret;
/* Get exclusive access to the device structures */
ret = nxsem_wait(&priv->exclsem);
if (ret < 0)
{
return ret;
}
finfo("entry: <%s> %d\n", inode->i_name, priv->crefs);
priv->crefs += 1;
assert(priv->crefs != 0);
nxsem_post(&priv->exclsem);
return ret;
}
/****************************************************************************
* Name: adb_char_close
*
* Description:
* Close adb device.
*
****************************************************************************/
static int adb_char_close(FAR struct file *filep)
{
int ret;
FAR struct inode *inode = filep->f_inode;
FAR struct usbdev_adb_s *priv = inode->i_private;
/* Get exclusive access to the device structures */
ret = nxsem_wait(&priv->exclsem);
if (ret < 0)
{
return ret;
}
finfo("entry: <%s> %d\n", inode->i_name, priv->crefs);
priv->crefs -= 1;
assert(priv->crefs >= 0);
nxsem_post(&priv->exclsem);
return OK;
}
/****************************************************************************
* Name: adb_char_blocking_io
*
* Description:
* Handle read/write blocking io.
*
****************************************************************************/
static int adb_char_blocking_io(FAR struct usbdev_adb_s *priv,
FAR adb_char_waiter_sem_t *sem,
FAR adb_char_waiter_sem_t **slist,
FAR struct sq_queue_s *queue)
{
int ret;
irqstate_t flags;
flags = enter_critical_section();
if (!sq_empty(queue))
{
/* Queue not empty after all */
leave_critical_section(flags);
return 0;
}
/* Register waiter semaphore */
sem->next = *slist;
*slist = sem;
leave_critical_section(flags);
nxsem_post(&priv->exclsem);
/* Wait for USB device to notify */
ret = nxsem_wait(&sem->sem);
if (ret < 0)
{
/* Interrupted wait, unregister semaphore
* TODO ensure that exclsem wait does not fail (ECANCELED)
*/
nxsem_wait_uninterruptible(&priv->exclsem);
flags = enter_critical_section();
adb_char_waiter_sem_t *cur_sem = *slist;
if (cur_sem == sem)
{
*slist = sem->next;
}
else
{
while (cur_sem)
{
if (cur_sem->next == sem)
{
cur_sem->next = sem->next;
break;
}
}
}
leave_critical_section(flags);
nxsem_post(&priv->exclsem);
return ret;
}
return nxsem_wait(&priv->exclsem);
}
/****************************************************************************
* Name: adb_char_read
*
* Description:
* Read adb device.
*
****************************************************************************/
static ssize_t adb_char_read(FAR struct file *filep, FAR char *buffer,
size_t len)
{
FAR struct inode *inode = filep->f_inode;
FAR struct usbdev_adb_s *priv = inode->i_private;
ssize_t ret;
size_t retlen;
irqstate_t flags;
assert(len > 0 && buffer != NULL);
if (priv->config == USBADB_CONFIGIDNONE)
{
/* USB device not connected */
return -EPIPE;
}
ret = nxsem_wait(&priv->exclsem);
if (ret < 0)
{
return ret;
}
/* Check for available data */
if (sq_empty(&priv->rxpending))
{
if (filep->f_oflags & O_NONBLOCK)
{
nxsem_post(&priv->exclsem);
return -EAGAIN;
}
adb_char_waiter_sem_t sem;
nxsem_init(&sem.sem, 0, 0);
nxsem_set_protocol(&sem.sem, SEM_PRIO_NONE);
do
{
/* RX queue seems empty. Check again with interrupts disabled */
ret = adb_char_blocking_io(
priv, &sem, &priv->rdsems, &priv->rxpending);
if (ret < 0)
{
nxsem_destroy(&sem.sem);
return ret;
}
}
while (sq_empty(&priv->rxpending));
/* RX queue not empty and exclsem locked so we are the only reader */
nxsem_destroy(&sem.sem);
}
/* Device ready for read */
retlen = 0;
while (!sq_empty(&priv->rxpending) && len > 0)
{
FAR struct usbadb_rdreq_s *rdcontainer;
uint16_t reqlen;
/* Process each packet in the priv->rxpending list */
rdcontainer = container_of(
sq_peek(&priv->rxpending),
struct usbadb_rdreq_s,
node);
reqlen = rdcontainer->req->xfrd - rdcontainer->offset;
if (reqlen > len)
{
/* Output buffer full */
memcpy(&buffer[retlen],
&rdcontainer->req->buf[rdcontainer->offset],
len);
rdcontainer->offset += len;
retlen += len;
break;
}
memcpy(&buffer[retlen],
&rdcontainer->req->buf[rdcontainer->offset],
reqlen);
retlen += reqlen;
len -= reqlen;
/* The entire packet was processed and may be removed from the
* pending RX list.
*/
/* FIXME use atomic queue primitives ? */
flags = enter_critical_section();
sq_remfirst(&priv->rxpending);
leave_critical_section(flags);
ret = usb_adb_submit_rdreq(priv, rdcontainer);
if (ret != OK)
{
/* TODO handle error */
PANIC();
}
}
nxsem_post(&priv->exclsem);
return retlen;
}
/****************************************************************************
* Name: adb_char_write
*
* Description:
* Write adb device.
*
****************************************************************************/
static ssize_t adb_char_write(FAR struct file *filep,
FAR const char *buffer, size_t len)
{
int ret;
int wlen;
FAR struct usbdev_req_s *req;
FAR struct usbadb_wrreq_s *wrcontainer;
FAR struct inode *inode = filep->f_inode;
FAR struct usbdev_adb_s *priv = inode->i_private;
irqstate_t flags;
if (priv->config == USBADB_CONFIGIDNONE)
{
/* USB device not connected */
return -EPIPE;
}
ret = nxsem_wait(&priv->exclsem);
if (ret < 0)
{
return ret;
}
/* Check for available write request */
if (sq_empty(&priv->txfree))
{
if (filep->f_oflags & O_NONBLOCK)
{
ret = -EAGAIN;
goto errout;
}
adb_char_waiter_sem_t sem;
nxsem_init(&sem.sem, 0, 0);
nxsem_set_protocol(&sem.sem, SEM_PRIO_NONE);
do
{
/* TX queue seems empty. Check again with interrupts disabled */
ret = adb_char_blocking_io(
priv, &sem, &priv->wrsems, &priv->txfree);
if (ret < 0)
{
nxsem_destroy(&sem.sem);
return ret;
}
}
while (sq_empty(&priv->txfree));
nxsem_destroy(&sem.sem);
}
/* Device ready for write */
wlen = 0;
while (len > 0 && !sq_empty(&priv->txfree))
{
int cur_len;
/* Get available TX request slot */
flags = enter_critical_section();
wrcontainer = container_of(
sq_remfirst(&priv->txfree),
struct usbadb_wrreq_s,
node);
leave_critical_section(flags);
req = wrcontainer->req;
/* Fill the request with data */
if (len > priv->epbulkin->maxpacket)
{
cur_len = priv->epbulkin->maxpacket;
}
else
{
cur_len = len;
}
memcpy(req->buf, &buffer[wlen], cur_len);
/* Then submit the request to the endpoint */
req->len = cur_len;
req->flags = 0;
req->priv = wrcontainer;
ret = EP_SUBMIT(priv->epbulkin, req);
if (ret != OK)
{
/* TODO add tx request back in txfree queue */
usbtrace(TRACE_CLSERROR(USBSER_TRACEERR_SUBMITFAIL),
(uint16_t)-ret);
PANIC();
break;
}
wlen += cur_len;
len -= cur_len;
}
assert(wlen > 0);
ret = wlen;
errout:
nxsem_post(&priv->exclsem);
return ret;
}
static int adb_char_ioctl(FAR struct file *filep, int cmd,
unsigned long arg)
{
return -EINVAL;
}
static int adb_char_poll(FAR struct file *filep, FAR struct pollfd *fds,
bool setup)
{
FAR struct inode *inode = filep->f_inode;
FAR struct usbdev_adb_s *priv = inode->i_private;
int ret;
int i;
pollevent_t eventset;
irqstate_t flags;
ret = nxsem_wait(&priv->exclsem);
if (ret < 0)
{
return ret;
}
ret = OK;
if (!setup)
{
/* This is a request to tear down the poll. */
FAR struct pollfd **slot = (FAR struct pollfd **)fds->priv;
/* Remove all memory of the poll setup */
*slot = NULL;
fds->priv = NULL;
goto errout;
}
/* FIXME only parts of this function required interrupt disabled */
flags = enter_critical_section();
/* This is a request to set up the poll. Find an available
* slot for the poll structure reference
*/
for (i = 0; i < CONFIG_USBADB_NPOLLWAITERS; i++)
{
/* Find an available slot */
if (!priv->fds[i])
{
/* Bind the poll structure and this slot */
priv->fds[i] = fds;
fds->priv = &priv->fds[i];
break;
}
}
if (i >= CONFIG_USBADB_NPOLLWAITERS)
{
fds->priv = NULL;
ret = -EBUSY;
goto exit_leave_critical;
}
eventset = 0;
/* Notify the POLLOUT event if at least one request is available */
if (!sq_empty(&priv->txfree))
{
eventset |= POLLOUT;
}
/* Notify the POLLIN event if at least one read request is pending */
if (!sq_empty(&priv->rxpending))
{
eventset |= POLLIN;
}
if (eventset)
{
adb_char_pollnotify(priv, eventset);
}
exit_leave_critical:
leave_critical_section(flags);
errout:
nxsem_post(&priv->exclsem);
return ret;
}
static void adb_char_on_connect(FAR struct usbdev_adb_s *priv, int connect)
{
irqstate_t flags;
adb_char_waiter_sem_t *cur_sem;
flags = enter_critical_section();
if (connect)
{
/* Notify poll/select with POLLIN */
adb_char_pollnotify(priv, POLLIN);
}
else
{
/* Notify all of the char device waiting readers */
cur_sem = priv->rdsems;
while (cur_sem != NULL)
{
nxsem_post(&cur_sem->sem);
cur_sem = cur_sem->next;
}
priv->rdsems = NULL;
/* Notify all of the char device waiting writers */
cur_sem = priv->wrsems;
while (cur_sem != NULL)
{
nxsem_post(&cur_sem->sem);
cur_sem = cur_sem->next;
}
priv->wrsems = NULL;
/* Notify all poll/select waiters that a hangup occurred */
adb_char_pollnotify(priv, (POLLERR | POLLHUP));
}
leave_critical_section(flags);
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: usbdev_adb_initialize
*
* Description:
* Initialize the Android Debug Bridge USB device driver.
*
* Returned Value:
* 0 on success, -errno on failure
*
****************************************************************************/
#ifndef CONFIG_USBADB_COMPOSITE
int usbdev_adb_initialize(void)
{
int ret;
FAR struct usbdevclass_driver_s *classdev;
FAR struct adb_driver_s *drvr;
ret = usbclass_classobject(0, NULL, &classdev);
if (ret)
{
nerr("usbclass_classobject failed: %d\n", ret);
return ret;
}
drvr = (FAR struct adb_driver_s *)classdev;
ret = usbdev_register(&drvr->drvr);
if (ret)
{
nerr("usbdev_register failed: %d\n", ret);
usbtrace(TRACE_CLSERROR(USBSER_TRACEERR_DEVREGISTER), (uint16_t)-ret);
usbclass_uninitialize(classdev);
return ret;
}
return OK;
}
#endif
/****************************************************************************
* Name: usbdev_adb_get_composite_devdesc
*
* Description:
* Helper function to fill in some constants into the composite
* configuration struct.
*
* Input Parameters:
* dev - Pointer to the configuration struct we should fill
*
* Returned Value:
* None
*
****************************************************************************/
#if defined(CONFIG_USBDEV_COMPOSITE) && defined(CONFIG_USBADB_COMPOSITE)
void usbdev_adb_get_composite_devdesc(struct composite_devdesc_s *dev)
{
memset(dev, 0, sizeof(struct composite_devdesc_s));
dev->mkconfdesc = usbclass_mkcfgdesc;
dev->mkstrdesc = usbclass_mkstrdesc;
dev->classobject = usbclass_classobject;
dev->uninitialize = usbclass_uninitialize;
dev->nconfigs = USBADB_NCONFIGS;
dev->configid = 1;
dev->cfgdescsize = sizeof(g_adb_cfgdesc)+2*USB_SIZEOF_EPDESC;
dev->devinfo.ninterfaces = 1;
dev->devinfo.nstrings = USBADB_NSTRIDS;
dev->devinfo.nendpoints = USBADB_NUM_EPS;
}
#endif
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