diff --git a/ChangeLog b/ChangeLog
index 7fa567aa7865a5116365da37ab3a261a2e821c7e..c133ff5d0462be8d929ed3e101e96378bc4d800b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -480,5 +480,8 @@
* ARM architectures now support drivers/lowconsole.c
0.3.16 2008-xx-xx Gregory Nutt <spudmonkey@racsa.co.cr>
+ * Added header files defining a common USB device controller architecture
+ * Added USB device side driver for the LPC214x (untested at initial checkin)
+
diff --git a/Documentation/NuttX.html b/Documentation/NuttX.html
index 7edeb4d19e2c148f94307d5dfd78a0a8341e2ccb..00d58f19366f6d8521eeb6ed9878f3a06727f7c6 100644
--- a/Documentation/NuttX.html
+++ b/Documentation/NuttX.html
@@ -8,7 +8,7 @@
<tr align="center" bgcolor="#e4e4e4">
<td>
<h1><big><font color="#3c34ec"><i>NuttX RTOS</i></font></big></h1>
- <p>Last Updated: September 20, 2008</p>
+ <p>Last Updated: September 29, 2008</p>
</td>
</tr>
</table>
@@ -1070,6 +1070,8 @@ buildroot-0.1.0 2007-03-09 <spudmonkey@racsa.co.cr>
<pre><ul>
nuttx-0.3.16 2008-xx-xx Gregory Nutt <spudmonkey@racsa.co.cr>
+ * Added header files defining a common USB device controller architecture
+ * Added USB device side driver for the LPC214x (untested at initial checkin)
pascal-0.1.3 2008-xx-xx Gregory Nutt <spudmonkey@racsa.co.cr>
diff --git a/arch/arm/src/lpc214x/Make.defs b/arch/arm/src/lpc214x/Make.defs
index e3e2984d84ddfc947eadb76bfb8a4173712bdf9b..1f199a6ba7339a9eaa3162dd7c7be26f18a7c3ac 100644
--- a/arch/arm/src/lpc214x/Make.defs
+++ b/arch/arm/src/lpc214x/Make.defs
@@ -50,4 +50,8 @@ endif
CHIP_ASRCS = lpc214x_lowputc.S
CHIP_CSRCS = lpc214x_decodeirq.c lpc214x_irq.c lpc214x_timerisr.c \
lpc214x_serial.c
-
+
+ifeq ($(CONFIG_USBDEV),y)
+CHIP_CSRCS += lpc214x_usbdev.c
+endif
+
diff --git a/arch/arm/src/lpc214x/lpc214x_usbdev.c b/arch/arm/src/lpc214x/lpc214x_usbdev.c
new file mode 100644
index 0000000000000000000000000000000000000000..aed47a03a662e9bf2a92730522fcfbb69b5a6da6
--- /dev/null
+++ b/arch/arm/src/lpc214x/lpc214x_usbdev.c
@@ -0,0 +1,2695 @@
+/*******************************************************************************
+ * arch/arm/src/lpc214x/lpc214x_usbdev.c
+ *
+ * Copyright (C) 2008 Gregory Nutt. All rights reserved.
+ * Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ * used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ *******************************************************************************/
+
+/*******************************************************************************
+ * Included Files
+ *******************************************************************************/
+
+#include <nuttx/config.h>
+#include <sys/types.h>
+
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <queue.h>
+#include <debug.h>
+
+#include <nuttx/arch.h>
+#include <nuttx/usb.h>
+#include <nuttx/usbdev.h>
+#include <nuttx/usbdev_trace.h>
+
+#include <arch/irq.h>
+#include <arch/board/board.h>
+
+#include "up_arch.h"
+#include "up_internal.h"
+#include "lpc214x_usbdev.h"
+#include "lpc214x_power.h"
+
+/*******************************************************************************
+ * Definitions
+ *******************************************************************************/
+
+/* Configuration ***************************************************************/
+
+#ifndef CONFIG_USBDEV_EP0_MAXSIZE
+# define CONFIG_USBDEV_EP0_MAXSIZE 64
+#endif
+
+#ifndef CONFIG_USBDEV_MAXPOWER
+# define CONFIG_USBDEV_MAXPOWER 100 /* mA */
+#endif
+
+#define USB_SLOW_INT USBDEV_DEVINT_EPSLOW
+#define USB_DEVSTATUS_INT USBDEV_DEVINT_DEVSTAT
+
+#ifdef CONFIG_LPC214X_USBDEV_EPFAST_INTERRUPT
+# define USB_FAST_INT USBDEV_DEVINT_EPFAST
+#else
+# define USB_FAST_INT 0
+#endif
+
+/* Enable reading SOF from interrupt handler vs. simply reading on demand. Probably
+ * a bad idea... Unless there is some issue with sampling the SOF from hardware
+ * asynchronously.
+ */
+
+#ifdef CONFIG_LPC214X_USBDEV_FRAME_INTERRUPT
+# define USB_FRAME_INT USBDEV_DEVINT_FRAME
+#else
+# define USB_FRAME_INT 0
+#endif
+
+#ifdef CONFIG_DEBUG
+# define USB_ERROR_INT USBDEV_DEVINT_EPRINT
+#else
+# define USB_ERROR_INT 0
+#endif
+
+/* Number of DMA descriptors */
+
+#ifdef CONFIG_LPC214X_USBDEV_DMA
+# error DMA SUPPORT NOT YET FULLY IMPLEMENTED
+# ifndef CONFIG_LPC214X_USBDEV_NDMADESCRIPTORS
+# define CONFIG_LPC214X_USBDEV_NDMADESCRIPTORS 8
+# elif CONFIG_LPC214X_USBDEV_NDMADESCRIPTORS > 30
+# define CONFIG_LPC214X_USBDEV_NDMADESCRIPTORS 30
+# endif
+#endif
+
+/* Debug ***********************************************************************/
+
+#ifndef CONFIG_USBDEV_TRACE
+# undef usbtrace
+# define usbtrace(a,b) udbg("%04x:%04x\n", a, b)
+#endif
+
+/* Trace error codes */
+
+#define LPC214X_TRACEERR_ALLOCFAIL 0x0001
+#define LPC214X_TRACEERR_BADEPNO 0x0002
+#define LPC214X_TRACEERR_BADEPTYPE 0x0003
+#define LPC214X_TRACEERR_BADREQUEST 0x0004
+#define LPC214X_TRACEERR_BINDFAILED 0x0005
+#define LPC214X_TRACEERR_DMABUSY 0x0006
+#define LPC214X_TRACEERR_DRIVER 0x0007
+#define LPC214X_TRACEERR_DRIVERREGISTERED 0x0008
+#define LPC214X_TRACEERR_EPREAD 0x0009
+#define LPC214X_TRACEERR_INVALIDPARMS 0x000a
+#define LPC214X_TRACEERR_IRQREGISTRATION 0x000b
+#define LPC214X_TRACEERR_NODMADESC 0x000c
+#define LPC214X_TRACEERR_NOEP 0x000d
+#define LPC214X_TRACEERR_NOTCONFIGURED 0x000e
+#define LPC214X_TRACEERR_NULLPACKET 0x000f
+#define LPC214X_TRACEERR_NULLREQUEST 0x0010
+#define LPC214X_TRACEERR_STALLED 0x0011
+
+/* Trace interrupt codes */
+
+#define LPC214X_TRACEINTID_USB 0x0001
+#define LPC214X_TRACEINTID_CLEARFEATURE 0x0002
+#define LPC214X_TRACEINTID_CONNECTCHG 0x0003
+#define LPC214X_TRACEINTID_CONNECTED 0x0004
+#define LPC214X_TRACEINTID_DEVGETSTATUS 0x0005
+#define LPC214X_TRACEINTID_DEVRESET 0x0006
+#define LPC214X_TRACEINTID_DEVSTAT 0x0007
+#define LPC214X_TRACEINTID_DISCONNECTED 0x0008
+#define LPC214X_TRACEINTID_DISPATCH 0x0009
+#define LPC214X_TRACEINTID_EP0IN 0x000a
+#define LPC214X_TRACEINTID_EP0OUT 0x000b
+#define LPC214X_TRACEINTID_EP0SETUP 0x000c
+#define LPC214X_TRACEINTID_EPDMA 0x000d
+#define LPC214X_TRACEINTID_EPFAST 0x000e
+#define LPC214X_TRACEINTID_EPGETSTATUS 0x000f
+#define LPC214X_TRACEINTID_EPIN 0x0010
+#define LPC214X_TRACEINTID_EPOUT 0x0011
+#define LPC214X_TRACEINTID_EPRINT 0x0012
+#define LPC214X_TRACEINTID_EPSLOW 0x0013
+#define LPC214X_TRACEINTID_FRAME 0x0014
+#define LPC214X_TRACEINTID_IFGETSTATUS 0x0015
+#define LPC214X_TRACEINTID_SETADDRESS 0x0017
+#define LPC214X_TRACEINTID_SETFEATURE 0x0018
+#define LPC214X_TRACEINTID_SUSPENDCHG 0x0019
+
+/* Hardware interface **********************************************************/
+
+/* Macros for testing the device status response */
+
+#define DEVSTATUS_CONNECT(s) (((s)&USBDEV_DEVSTATUS_CONNECT)!=0)
+#define DEVSTATUS_CONNCHG(s) (((s)&USBDEV_DEVSTATUS_CONNCHG)!=0)
+#define DEVSTATUS_SUSPEND(s) (((s)&USBDEV_DEVSTATUS_SUSPEND)!=0)
+#define DEVSTATUS_SUSPCHG(s) (((s)&USBDEV_DEVSTATUS_SUSPCHG)!=0)
+#define DEVSTATUS_RESET(s) (((s)&USBDEV_DEVSTATUS_RESET)!=0)
+
+/* If this bit is set in the lpc214x_epread response, it means that the
+ * recevied packet was overwritten by a later setup packet (ep0 only).
+ */
+
+#define LPC214X_READOVERRUN_BIT (0x80000000)
+#define LPC214X_READOVERRUN(s) (((s) & LPC214X_READOVERRUN_BIT) != 0)
+
+/* USB RAM ********************************************************************
+ *
+ * UBS_UDCA is is list of 32 pointers to DMA desciptors located at the
+ * beginning of USB RAM. Each pointer points to a DMA descriptor with
+ * assocated DMA buffer.
+ */
+
+#define USB_UDCA (uint32*)LPC214X_USBDEV_RAMBASE)
+#define USB_USCASIZE (LPC214X_NPHYSENDPOINTS*sizeof(uint32))
+
+/* Each descriptor must be aligned to a 128 address boundary */
+
+#define USB_DDALIGNDOWN(a) ((a)&~0x7f)
+#define USB_DDALIGNUP(a) USB_DDALIGNDOWN((a)+0x7f)
+
+#define USB_DDSIZE USB_DDALIGNDOWN((LPC214X_USBDEV_RAMSIZE-USB_USCASIZE)/CONFIG_LPC214X_USBDEV_NDMADESCRIPTORS)
+#define USB_DDESC ((struct lpc214x_dmadesc_s*)(LPC214X_USBDEV_RAMBASE+USB_USCASIZE))
+
+#ifdef CONFIG_USBDEV_ISOCHRONOUS
+# define USB_DDESCSIZE (5*sizeof(uint32))
+#else
+# define USB_DDESCSIZE (4*sizeof(uint32))
+#endif
+
+/* Endpoints ******************************************************************/
+
+/* Number of endpoints */
+
+#define LPC214X_NLOGENDPOINTS (16) /* ep0-15 */
+#define LPC214X_NPHYSENDPOINTS (32) /* x2 for IN and OUT */
+
+/* Mapping to more traditional endpoint numbers */
+
+#define LPC214X_EP_LOG2PHYOUT(ep) ((ep)&0x0f)<<1))
+#define LPC214X_EP_LOG2PHYIN(ep) (LPC214X_EP_OUT(ep)|0x01)
+#define LPC214X_EP_LOG2PHY(ep) ((((ep)&0x0f)<<1)|(((ep)&0x80)>>7))
+
+/* Each endpoint has somewhat different characteristics */
+
+#define LPC214X_EPALLSET (0xffffffff) /* All endpoints */
+#define LPC214X_EPOUTSET (0x55555555) /* Even phy endpoint numbers are OUT EPs */
+#define LPC214X_EPINSET (0xaaaaaaaa) /* Odd endpoint numbers are IN EPs */
+#define LPC214X_EPCTRLSET (0x00000003) /* EP0 IN/OUT are control endpoints */
+#define LPC214X_EPINTRSET (0x0c30c30c) /* Interrupt endpoints */
+#define LPC214X_EPBULKSET (0xf0c30c30) /* Bulk endpoints */
+#define LPC214X_EPISOCSET (0x030c30c0) /* Isochronous endpoints */
+
+#define LPC214X_EP0MAXPACKET (64) /* EP0 max packet size */
+#define LPC214X_BULKMAXPACKET (64) /* Bulk endpoint max packet */
+#define LPC214X_INTRMAXPACKET (64) /* Interrupt endpoint max packet */
+
+/* EP0 status */
+
+#define LPC214X_EP0IDLE (0) /* Nothing in progress */
+#define LPC214X_EP0STATUSIN (1) /* Status sent */
+#define LPC214X_EP0STATUSOUT (2) /* Status received */
+#define LPC214X_EP0SHORTWRITE (3) /* Short data sent with no request */
+#define LPC214X_EP0SHORTWRSENT (4) /* Short data write complete */
+#define LPC214X_EP0SETADDRESS (5) /* Set address received */
+
+/*******************************************************************************
+ * Private Types
+ *******************************************************************************/
+
+/* A container for a request so that the request make be retained in a list */
+
+struct lpc214x_req_s
+{
+ struct usbdev_req_s req; /* Standard USB request */
+ sq_entry_t sqe; /* Supports a singly linked list */
+};
+
+/* This is the internal representation of an endpoint */
+
+struct lpc214x_ep_s
+{
+ /* Common endpoint fields. This must be the first thing defined in the
+ * structure so that it is possible to simply cast from struct usbdev_ep_s
+ * to struct lpc214x_ep_s.
+ */
+
+ struct usbdev_ep_s ep; /* Standard endpoint structure */
+
+ /* LPC214X-specific fields */
+
+ struct lpc214x_usbdev_s *dev; /* Reference to private driver data */
+ sq_queue_t reqlist; /* Request list for this endpoint */
+ ubyte eplog; /* Logical EP address from descriptor */
+ ubyte epphy; /* Physical EP address */
+ ubyte stalled:1; /* Endpoint is halted */
+ ubyte in:1; /* Endpoint is IN only */
+ ubyte halted:1; /* Endport feature halted */
+};
+
+/* This represents a DMA descriptor */
+
+#ifdef CONFIG_LPC214X_USBDEV_DMA
+struct lpc214x_dmadesc_s
+{
+ uint32 nextdesc; /* Address of the next DMA descripto in RAM */
+ uint32 config; /* Misc. bit encoded configuration information */
+ uint32 start; /* DMA start address */
+ uint32 status; /* Misc. bit encoded status inforamation */
+#ifdef CONFIG_USBDEV_ISOCHRONOUS
+ uint32 size; /* Isochronous packet size address */
+#endif
+ ubyte buffer[USB_DDSIZE-USB_DDESCSIZE];
+};
+#endif
+
+/* This structure retains the state of the USB device controller */
+
+struct lpc214x_usbdev_s
+{
+ /* Common device fields. This must be the first thing defined in the
+ * structure so that it is possible to simply cast from struct usbdev_s
+ * to structlpc214x_usbdev_s.
+ */
+
+ struct usbdev_s usbdev;
+
+ /* The bound device class driver */
+
+ struct usbdevclass_driver_s *driver;
+
+ /* LPC214X-specific fields */
+
+ ubyte devstatus; /* Last response to device status command */
+ ubyte ep0state; /* State of certain EP0 operations */
+ ubyte stalled:1; /* 1: Protocol stalled */
+ ubyte selfpowered:1; /* 1: Device is self powered */
+ ubyte paddrset:1; /* 1: Peripheral addr has been set */
+ ubyte attached:1; /* 1: Host attached */
+ ubyte rxpending:1; /* 1: RX pending */
+ uint32 epavail; /* Available endpoints */
+ uint32 softprio; /* Bitset of high priority interrupts */
+ uint32 wravail; /* Bitset of available endpoints */
+#ifdef CONFIG_LPC214X_USBDEV_FRAME_INTERRUPT
+ uint32 sof; /* Last start-of-frame */
+#endif
+
+ /* Allocated DMA descriptor */
+
+#ifdef CONFIG_LPC214X_USBDEV_DMA
+ struct lpc214x_dmadesc_s *dmadesc;
+#endif
+
+ /* The endpoint list */
+
+ struct lpc214x_ep_s eplist[LPC214X_NPHYSENDPOINTS];
+};
+
+/*******************************************************************************
+ * Private Function Prototypes
+ *******************************************************************************/
+
+/* Command operations */
+
+static uint32 lpc214x_usbcmd(uint16 cmd, ubyte data);
+
+/* Low level data transfers and request operations */
+
+static void lpc214x_epwrite(ubyte epphy, const ubyte *data, uint32 nbytes);
+static int lpc214x_epread(ubyte epphy, ubyte *data, uint32 nbytes);
+static void lpc214x_reqcomplete(struct lpc214x_ep_s *privep, sint16 result);
+static int lpc214x_wrrequest(struct lpc214x_ep_s *privep);
+static int lpc214x_rdrequest(struct lpc214x_ep_s *privep);
+static void lpc214x_cancelrequests(struct lpc214x_ep_s *privep);
+
+/* Interrupt handling */
+
+static void lpc214x_eprealize(struct lpc214x_ep_s *privep, boolean prio, uint32 packetsize);
+static ubyte lpc214x_epclrinterrupt(ubyte epphy);
+static inline void lpc214x_ep0configure(struct lpc214x_usbdev_s *priv);
+#ifdef CONFIG_LPC214X_USBDEV_DMA
+static inline void lpc214x_dmareset(uint32 enable);
+#endif
+static void lpc214x_usbreset(struct lpc214x_usbdev_s *priv);
+static void lpc214x_dispatchrequest(struct lpc214x_usbdev_s *priv,
+ const struct usb_ctrlreq_s *req);
+static inline void lpc214x_ep0setup(struct lpc214x_usbdev_s *priv);
+static inline void lpc214x_ep0dataoutinterrupt(struct lpc214x_usbdev_s *priv);
+static inline void lpc214x_ep0dataininterrupt(struct lpc214x_usbdev_s *priv);
+static int lpc214x_usbinterrupt(int irq, FAR void *context);
+
+#ifdef CONFIG_LPC214X_USBDEV_DMA
+static int lpc214x_dmasetup(struct lpc214x_usbdev_s *priv, ubyte epphy,
+ uint32 epmaxsize, uint32 nbytes, uint32 *isocpacket,
+ boolean isochronous);
+static void lpc214x_dmarestart(ubyte epphy, uint32 descndx);
+static void lpc214x_dmadisable(ubyte epphy);
+#endif /* CONFIG_LPC214X_USBDEV_DMA */
+
+/* Endpoint operations */
+
+static int lpc214x_epconfigure(FAR struct usbdev_ep_s *ep,
+ const struct usb_epdesc_s *desc);
+static int lpc214x_epdisable(FAR struct usbdev_ep_s *ep);
+static FAR struct usbdev_req_s *lpc214x_epallocreq(FAR struct usbdev_ep_s *ep);
+static void lpc214x_epfreereq(FAR struct usbdev_ep_s *ep,
+ FAR struct usbdev_req_s *);
+#ifdef CONFIG_LPC214X_USBDEV_DMA
+static FAR void *lpc214x_epallocbuffer(FAR struct usbdev_ep_s *ep,
+ uint16 nbytes);
+static void lpc214x_epfreebuffer(FAR struct usbdev_ep_s *ep, void *buf);
+#endif
+static int lpc214x_epsubmit(FAR struct usbdev_ep_s *ep,
+ struct usbdev_req_s *req);
+static int lpc214x_epcancel(FAR struct usbdev_ep_s *ep,
+ struct usbdev_req_s *req);
+static int lpc214x_epstall(FAR struct usbdev_ep_s *ep, boolean resume);
+
+/* USB device controller operations */
+
+static FAR struct usbdev_ep_s *lcp214x_allocep(FAR struct usbdev_s *dev,
+ ubyte epno, boolean in, ubyte eptype);
+static void lpc214x_freeep(FAR struct usbdev_s *dev, FAR struct usbdev_ep_s *ep);
+static int lpc214x_getframe(struct usbdev_s *dev);
+static int lpc214x_wakeup(struct usbdev_s *dev);
+static int lpc214x_selfpowered(struct usbdev_s *dev, boolean selfpowered);
+static int lpc214x_pullup(struct usbdev_s *dev, boolean enable);
+
+/*******************************************************************************
+ * Private Data
+ *******************************************************************************/
+
+/* Since there is only a single USB interface, all status information can be
+ * be simply retained in a single global instance.
+ */
+
+static struct lpc214x_usbdev_s g_usbdev;
+
+static const struct usbdev_epops_s g_epops =
+{
+ .configure = lpc214x_epconfigure,
+ .disable = lpc214x_epdisable,
+ .allocreq = lpc214x_epallocreq,
+ .freereq = lpc214x_epfreereq,
+#ifdef CONFIG_LPC214X_USBDEV_DMA
+ .allocbuffer = lpc214x_epallocbuffer,
+ .freebuffer = lpc214x_epfreebuffer,
+#endif
+ .submit = lpc214x_epsubmit,
+ .cancel = lpc214x_epcancel,
+ .stall = lpc214x_epstall,
+};
+
+static const struct usbdev_ops_s g_devops =
+{
+ .allocep = lcp214x_allocep,
+ .freeep = lpc214x_freeep,
+ .getframe = lpc214x_getframe,
+ .wakeup = lpc214x_wakeup,
+ .selfpowered = lpc214x_selfpowered,
+ .pullup = lpc214x_pullup,
+};
+
+/*******************************************************************************
+ * Public Data
+ *******************************************************************************/
+
+/*******************************************************************************
+ * Private Functions
+ *******************************************************************************/
+
+/*******************************************************************************
+ * Name: lpc214x_usbcmd
+ *
+ * Description:
+ * Transmit commands to the USB engine
+ *
+ *******************************************************************************/
+
+static uint32 lpc214x_usbcmd(uint16 cmd, ubyte data)
+{
+ irqstate_t flags;
+ uint32 tmp = 0;
+
+ /* Disable interrupt and clear CDFULL and CCEMPTY interrupt status */
+
+ flags = irqsave();
+ putreg32(USBDEV_DEVINT_CDFULL|USBDEV_DEVINT_CCEMTY, LPC214X_USBDEV_DEVINTCLR);
+
+ /* Load commonad in USB engine */
+
+ putreg32(((cmd & 0xff) << 16) + CMD_USB_CMDWR, LPC214X_USBDEV_CMDCODE);
+
+ /* Wait until command is accepted */
+
+ while ((getreg32(LPC214X_USBDEV_DEVINTST) & USBDEV_DEVINT_CCEMTY) == 0);
+
+ /* Clear command register empty (CCEMPTY) interrupt */
+
+ putreg32(USBDEV_DEVINT_CCEMTY, LPC214X_USBDEV_DEVINTCLR);
+
+ /* determinate next phase of the command */
+
+ switch (cmd)
+ {
+ case CMD_USB_DEV_SETADDRESS:
+ case CMD_USB_DEV_CONFIG:
+ case CMD_USB_DEV_SETMODE:
+ case CMD_USB_DEV_SETSTATUS:
+ putreg32((data << 16) + CMD_USB_DATAWR, LPC214X_USBDEV_CMDCODE);
+ while ((getreg32(LPC214X_USBDEV_DEVINTST) & USBDEV_DEVINT_CCEMTY) == 0);
+ break;
+
+ case CMD_USB_DEV_READFRAMENO:
+ case CMD_USB_DEV_READTESTREG:
+ putreg32((cmd << 16) + CMD_USB_DATARD, LPC214X_USBDEV_CMDCODE);
+ while ((getreg32(LPC214X_USBDEV_DEVINTST) & USBDEV_DEVINT_CDFULL) == 0);
+ putreg32(USBDEV_DEVINT_CDFULL, LPC214X_USBDEV_DEVINTCLR);
+ tmp = getreg32(LPC214X_USBDEV_CMDDATA);
+ putreg32((cmd << 16) + CMD_USB_DATARD, LPC214X_USBDEV_CMDCODE);
+ while ((getreg32(LPC214X_USBDEV_DEVINTST) & USBDEV_DEVINT_CDFULL) == 0);
+ tmp |= getreg32(LPC214X_USBDEV_CMDDATA) << 8;
+ break;
+
+ case CMD_USB_DEV_GETSTATUS:
+ case CMD_USB_DEV_GETERRORCODE:
+ case CMD_USB_DEV_READERRORSTATUS:
+ case CMD_USB_EP_CLRBUFFER:
+ putreg32((cmd << 16) + CMD_USB_DATARD, LPC214X_USBDEV_CMDCODE);
+ while ((getreg32(LPC214X_USBDEV_DEVINTST) & USBDEV_DEVINT_CDFULL) == 0);
+ tmp = getreg32(LPC214X_USBDEV_CMDDATA);
+ break;
+
+ default:
+ switch (cmd & 0x1e0)
+ {
+ case CMD_USB_EP_SELECT:
+ case CMD_USB_EP_SELECTCLEAR:
+ putreg32((cmd << 16) + CMD_USB_DATARD, LPC214X_USBDEV_CMDCODE);
+ while ((getreg32(LPC214X_USBDEV_DEVINTST) & USBDEV_DEVINT_CDFULL) == 0);
+ tmp = getreg32(LPC214X_USBDEV_CMDDATA);
+ break;
+
+ case CMD_USB_EP_SETSTATUS:
+ putreg32((data << 16) + CMD_USB_DATAWR, LPC214X_USBDEV_CMDCODE);
+ while ((getreg32(LPC214X_USBDEV_DEVINTST) & USBDEV_DEVINT_CCEMTY) == 0);
+ break;
+ }
+ break;
+ }
+
+ /* Restore the interrupt flags */
+
+ irqrestore(flags);
+ return tmp;
+}
+
+/*******************************************************************************
+ * Name: lpc214x_epwrite
+ *
+ * Description:
+ * Endpoint write (IN)
+ *
+ *******************************************************************************/
+
+static void lpc214x_epwrite(ubyte epphy, const ubyte *data, uint32 nbytes)
+{
+ /* Set the write enable bit for this physical EP address */
+
+ putreg32(((epphy << 1) & LPC214X_USBCTRL_EPMASK) | LPC214X_USBCTRL_WREN,
+ LPC214X_USBDEV_CTRL);
+
+ /* Set the transmit packet length (nbytes must be less than 2048) */
+
+ putreg32(nbytes, LPC214X_USBDEV_TXPLEN);
+
+ /* Transfer the packet data */
+
+ do
+ {
+ /* Zero length packets are a special case */
+
+ if (nbytes)
+ {
+ putreg32(*data++, LPC214X_USBDEV_TXDATA);
+ }
+ else
+ {
+ /* Zero length packet */
+
+ putreg32(0, LPC214X_USBDEV_TXDATA);
+ }
+ }
+ while ((getreg32(LPC214X_USBDEV_CTRL) & LPC214X_USBCTRL_WREN) != 0);
+
+ /* Done */
+
+ putreg32(0, LPC214X_USBDEV_CTRL);
+ (void)lpc214x_usbcmd(CMD_USB_EP_SELECT | epphy, 0);
+ (void)lpc214x_usbcmd(CMD_USB_EP_VALIDATEBUFFER, 0);
+}
+
+/*******************************************************************************
+ * Name: lpc214x_epread
+ *
+ * Description:
+ * Endpoint read (OUT)
+ *
+ *******************************************************************************/
+
+static int lpc214x_epread(ubyte epphy, ubyte *data, uint32 nbytes)
+{
+ uint32 pktlen;
+ uint32 result;
+ uint32 value;
+
+ /* Set the read enable bit for this physical EP address */
+
+ putreg32(((epphy << 1) & LPC214X_USBCTRL_EPMASK) | LPC214X_USBCTRL_RDEN,
+ LPC214X_USBDEV_CTRL);
+
+ /* Wait for packet buffer ready for reading */
+
+ while ((getreg32(LPC214X_USBDEV_RXPLEN) & USBDEV_RXPLEN_PKTRDY) == 0);
+
+ /* Get the about of data to be read */
+
+ pktlen = getreg32(LPC214X_USBDEV_RXPLEN) & USBDEV_RXPLEN_PKTLENGTH;
+
+ /* Read data from input buffer while read data is valid (DV) */
+
+ while ((getreg32(LPC214X_USBDEV_RXPLEN) & USBDEV_RXPLEN_DV) != 0)
+ {
+ value = getreg32(LPC214X_USBDEV_RXDATA);
+ if (data)
+ {
+ *data++ = value;
+ }
+ }
+
+ /* Done */
+
+ putreg32(0, LPC214X_USBDEV_CTRL);
+ (void)lpc214x_usbcmd(CMD_USB_EP_SELECT | epphy, 0);
+ result = lpc214x_usbcmd(CMD_USB_EP_CLRBUFFER, 0);
+
+ /* The packet overrun bit in the clear buffer response is applicable only
+ * on EP0 transfers. If set it means that the recevied packet was overwritten
+ * by a later setup packet.
+ */
+
+ if (epphy == LPC214X_EP0_OUT && (result & CMD_USB_CLRBUFFER_PO) != 0)
+ {
+ /* Pass this information in bit 31 */
+
+ pktlen |= LPC214X_READOVERRUN_BIT;
+ }
+ return pktlen;
+}
+
+/*******************************************************************************
+ * Name: lpc214x_reqcomplete
+ *
+ * Description:
+ * Handle termination of a request.
+ *
+ *******************************************************************************/
+
+static void lpc214x_reqcomplete(struct lpc214x_ep_s *privep, sint16 result)
+{
+ struct lpc214x_req_s *privreq;
+ int stalled = privep->stalled;
+ irqstate_t flags;
+
+ /* Remove the complete request at the head of the endpoint request list */
+
+ flags = irqsave();
+ privreq = (struct lpc214x_req_s *)sq_remfirst(&privep->reqlist);
+ irqrestore(flags);
+
+ if (privreq)
+ {
+ /* If endpoint 0, temporarily reflect the state of protocol stalled
+ * in the callback.
+ */
+
+ if (privep->epphy == 0)
+ {
+ if (privep->dev->stalled)
+ {
+ privep->stalled = 1;
+ }
+ }
+
+ /* Save the result in the request structure */
+
+ privreq->req.result = result;
+
+ /* Callback to the request completion handler */
+
+ privreq->sqe.flink = NULL;
+ privreq->req.callback(&privep->ep, &privreq->req);
+
+ /* Restore the stalled indication */
+
+ privep->stalled = stalled;
+ }
+}
+
+/*******************************************************************************
+ * Name: lpc214x_wrrequest
+ *
+ * Description:
+ * Send from the next queued write request
+ *
+ * Returned Value:
+ * 0:not finished; 1:completed; <0:error
+ *
+ *******************************************************************************/
+
+static int lpc214x_wrrequest(struct lpc214x_ep_s *privep)
+{
+ struct lpc214x_req_s *privreq;
+ ubyte *buf;
+ int nbytes;
+ int bytesleft;
+
+ /* Check the request from the head of the endpoint request queue */
+
+ privreq = (struct lpc214x_req_s *)sq_peek(&privep->reqlist);
+ if (!privreq)
+ {
+ usbtrace(TRACE_ERROR(LPC214X_TRACEERR_NULLREQUEST), 0);
+ return OK;
+ }
+
+ bytesleft = privreq->req.len;
+ for (;;)
+ {
+ /* Send the next packet if (1) there are more bytes to be sent, or
+ * (2) the last packet was exactly maxpacketsize.
+ */
+
+ usbtrace(TRACE_WRITE(privep->epphy), privreq->req.xfrd);
+ if (privreq->req.len >= privreq->req.xfrd)
+ {
+ /* Try to send maxpacketsize -- unless we don't have that many
+ * bytes to send.
+ */
+
+ nbytes = privep->ep.maxpacket;
+ if (nbytes > bytesleft)
+ {
+ nbytes = bytesleft;
+ }
+
+ /* Send the largest number of bytes that we can in this packet */
+
+ buf = privreq->req.buf + privreq->req.xfrd;
+ lpc214x_epwrite(privep->epphy, buf, nbytes);
+
+ /* Update for the next time through the loop */
+
+ privreq->req.xfrd += nbytes;
+ bytesleft = privreq->req.len - privreq->req.xfrd;
+ }
+
+ /* If all of the bytes were sent (and the last packet was not full)
+ * then we are finished with the transfer)
+ */
+
+ if (privreq->req.len < privreq->req.xfrd)
+ {
+ usbtrace(TRACE_COMPLETE(privep->epphy), privreq->req.xfrd);
+ lpc214x_reqcomplete(privep, OK);
+ return OK;
+ }
+ }
+
+ return OK; /* Won't get here */
+}
+
+/*******************************************************************************
+ * Name: lpc214x_rdrequest
+ *
+ * Description:
+ * Receive to the next queued read request
+ *
+ *******************************************************************************/
+
+static int lpc214x_rdrequest(struct lpc214x_ep_s *privep)
+{
+ struct lpc214x_req_s *privreq;
+ ubyte *buf;
+ int nbytesread;
+
+ /* Check the request from the head of the endpoint request queue */
+
+ privreq = (struct lpc214x_req_s *)sq_peek(&privep->reqlist);
+ if (!privreq)
+ {
+ usbtrace(TRACE_ERROR(LPC214X_TRACEERR_NULLREQUEST), 0);
+ return OK;
+ }
+
+ usbtrace(TRACE_READ(privep->epphy), privreq->req.xfrd);
+ for (;;)
+ {
+ /* Receive the next packet if (1) there are more bytes to be receive, or
+ * (2) the last packet was exactly maxpacketsize.
+ */
+
+ buf = privreq->req.buf + privreq->req.xfrd;
+ nbytesread = lpc214x_epread(privep->epphy, buf, privep->ep.maxpacket);
+ if (nbytesread < 0)
+ {
+ usbtrace(TRACE_ERROR(LPC214X_TRACEERR_EPREAD), nbytesread);
+ return ERROR;
+ }
+
+ /* If the receive buffer is full or if the last packet was not full
+ * then we are finished with the transfer.
+ */
+
+ privreq->req.xfrd += nbytesread;
+ if (privreq->req.len < privreq->req.xfrd || nbytesread < privep->ep.maxpacket)
+ {
+ usbtrace(TRACE_COMPLETE(privep->epphy), privreq->req.xfrd);
+ lpc214x_reqcomplete(privep, OK);
+ return OK;
+ }
+ }
+
+ return OK; /* Won't get here */
+}
+
+/*******************************************************************************
+ * Name: lpc214x_cancelrequests
+ *
+ * Description:
+ * Cancel all pending requests for an endpoint
+ *
+ *******************************************************************************/
+
+static void lpc214x_cancelrequests(struct lpc214x_ep_s *privep)
+{
+ while (!sq_empty(&privep->reqlist))
+ {
+ lpc214x_reqcomplete(privep, -ESHUTDOWN);
+ }
+}
+
+/*******************************************************************************
+ * Name: lpc214x_eprealize
+ *
+ * Description:
+ * Enable or disable an endpoint
+ *
+ *******************************************************************************/
+
+static void lpc214x_eprealize(struct lpc214x_ep_s *privep, boolean prio, uint32 packetsize)
+{
+ struct lpc214x_usbdev_s *priv = privep->dev;
+ uint32 mask;
+ uint32 reg;
+
+ /* Initialize endpoint software priority */
+
+ mask = 1 << privep->epphy;
+ if (prio)
+ {
+ priv->softprio = priv->softprio | mask;
+ }
+ else
+ {
+ priv->softprio = priv->softprio & ~mask;
+ }
+
+ /* Clear realize interrupt bit */
+
+ putreg32(USBDEV_DEVINT_EPRLZED, LPC214X_USBDEV_DEVINTCLR);
+
+ /* Realize the endpoint */
+
+ reg = getreg32(LPC214X_USBDEV_REEP);
+ reg |= (1 << privep->epphy);
+ putreg32(reg, LPC214X_USBDEV_REEP);
+
+ /* Set endpoint maximum packet size */
+
+ putreg(privep->epphy, LPC214X_USBDEV_EPIND);
+ putreg(packetsize, LPC214X_USBDEV_MAXPSIZE);
+
+ /* Wait for Realize complete */
+
+ while ((getreg32(LPC214X_USBDEV_DEVINTST) & USBDEV_DEVINT_EPRLZED) == 0);
+
+ /* Clear realize interrupt bit */
+
+ putreg32(USBDEV_DEVINT_EPRLZED,LPC214X_USBDEV_DEVINTCLR);
+}
+
+/*******************************************************************************
+ * Name: lpc214x_epclrinterrupt
+ *
+ * Description:
+ * Clear the EP interrupt flag and return the current EP status
+ *
+ *******************************************************************************/
+
+static ubyte lpc214x_epclrinterrupt(ubyte epphy)
+{
+ /* Clear the endpoint interrupt */
+
+ putreg32(1 << epphy, LPC214X_USBDEV_EPINTCLR);
+
+ /* Wait for data in the command data register */
+
+ while ((getreg32(LPC214X_USBDEV_DEVINTST) & USBDEV_DEVINT_CDFULL) == 0);
+
+ /* Return the value of the command data register */
+
+ return getreg32(LPC214X_USBDEV_CMDDATA);
+}
+
+/*******************************************************************************
+ * Name: lpc214x_ep0configure
+ *
+ * Description:
+ * Configure endpoint 0
+ *
+ *******************************************************************************/
+
+static inline void lpc214x_ep0configure(struct lpc214x_usbdev_s *priv)
+{
+ uint32 inten;
+
+ /* EndPoint 0 initialization */
+
+ lpc214x_eprealize(&priv->eplist[LPC214X_CTRLEP_OUT], 0, CONFIG_USBDEV_EP0_MAXSIZE);
+ lpc214x_eprealize(&priv->eplist[LPC214X_CTRLEP_IN], 1, CONFIG_USBDEV_EP0_MAXSIZE);
+
+ /* Enable EP0 interrupts (not DMA) */
+
+ inten = getreg32(LPC214X_USBDEV_EPINTEN);
+ inten |= 3; /* EP0 Rx and Tx */
+ putreg32(inten, LPC214X_USBDEV_EPINTEN);
+}
+
+/*******************************************************************************
+ * Name: lpc214x_dmareset
+ *
+ * Description: Reset USB DMA
+ *
+ *******************************************************************************/
+
+#ifdef CONFIG_LPC214X_USBDEV_DMA
+static inline void lpc214x_dmareset(uint32 enable)
+{
+ int i;
+
+ /* Disable All DMA interrupts */
+
+ putreg32(0, LPC214X_USBDEV_DMAINTEN);
+
+ /* DMA Disable */
+
+ putreg32(0xffffffff, LPC214X_USBDEV_EPDMADIS);
+
+ /* DMA Request clear */
+
+ putreq32(0xffffffff, LPC214X_USBDEV_DMARCLR);
+
+ /* End of Transfer Interrupt Clear */
+
+ putreq32(0xffffffff, LPC214X_USBDEV_EOTINTCLR);
+
+ /* New DD Request Interrupt Clear */
+
+ putreq32(0xffffffff, LPC214X_USBDEV_NDDRINTCLR);
+
+ /* System Error Interrupt Clear */
+
+ putreq32(0xffffffff, LPC214X_USBDEV_SYSERRINTCLR);
+
+ /* Nullify all pointers in the UDCA */
+
+ for (i = 0; i < LPC214X_NPHYSENDPOINTS; ++i)
+ {
+ USB_UDCA[i] = NULL;
+ }
+
+ /* Set USB UDCA Head register */
+
+ putreg32((uint32)USB_UDCA, LPC214X_USBDEV_UDCAH);
+
+ /* Invalidate all DMA descriptors */
+
+ for (i = 0; i < CONFIG_LPC214X_USBDEV_NDMADESCRIPTORS; ++i)
+ {
+ memset(&USB_DDESC[i], 0, USB_DDESCSIZE);
+ }
+
+ /* Enable DMA interrupts */
+
+ putreg32(enable, LPC214X_USBDEV_DMAINTEN);
+}
+#endif
+
+/*******************************************************************************
+ * Name: lpc214x_usbreset
+ *
+ * Description:
+ * Reset Usb engine
+ *
+ *******************************************************************************/
+
+static void lpc214x_usbreset(struct lpc214x_usbdev_s *priv)
+{
+ /* Disable all endpoint interrupts */
+
+ putreg32(0, LPC214X_USBDEV_EPINTEN);
+
+ /* Frame is Hp interrupt */
+
+ putreg32(1, LPC214X_USBDEV_DEVINTPRI);
+
+ /* Clear all pending interrupts */
+
+ putreg32(0xffffffff, LPC214X_USBDEV_EPINTCLR);
+ putreg32(0xffffffff, LPC214X_USBDEV_DEVINTCLR);
+
+ /* Periperhal address is needed */
+
+ priv->paddrset = 0;
+
+ /* Endpoints not yet configured */
+
+ lpc214x_usbcmd(CMD_USB_DEV_CONFIG, 0);
+
+ /* EndPoint 0 initialization */
+
+ lpc214x_ep0configure(priv);
+
+#ifdef CONFIG_LPC214X_USBDEV_DMA
+ /* Enable End_of_Transfer_Interrupt and System_Error_Interrupt USB DMA
+ * interrupts
+ */
+
+ lpc214x_dmareset(CONFIG_LPC214X_USBDEV_DMAINTMASK);
+
+#endif
+
+ /* Enable Device interrupts */
+
+ putreg32(USB_SLOW_INT|USB_DEVSTATUS_INT|USB_FAST_INT|USB_FRAME_INT|USB_ERROR_INT,
+ LPC214X_USBDEV_DEVINTEN);
+}
+
+/*******************************************************************************
+ * Name: lpc214x_dispatchrequest
+ *
+ * Description:
+ * Provide unhandled setup actions to the class driver. This is logically part
+ * of the USB interrupt handler.
+ *
+ *******************************************************************************/
+
+static void lpc214x_dispatchrequest(struct lpc214x_usbdev_s *priv,
+ const struct usb_ctrlreq_s *req)
+{
+ int ret;
+
+ usbtrace(TRACE_INTDECODE(LPC214X_TRACEINTID_DISPATCH), 0);
+ if (priv && priv->driver)
+ {
+ ret = CLASS_SETUP(priv->driver, &priv->usbdev, req);
+ if (ret < 0)
+ {
+ /* Stall on failure */
+
+ priv->stalled = 1;
+ }
+ else
+ {
+ lpc214x_epwrite(LPC214X_EP0_IN, NULL, 0);
+ priv->ep0state = LPC214X_EP0SHORTWRITE;
+ }
+ }
+}
+
+/*******************************************************************************
+ * Name: lpc214x_ep0setup
+ *
+ * Description:
+ * USB Ctrl EP Setup Event. This is logically part of the USB interrupt
+ * handler.
+ *
+ *******************************************************************************/
+
+static inline void lpc214x_ep0setup(struct lpc214x_usbdev_s *priv)
+{
+ struct lpc214x_ep_s *ep0 = &priv->eplist[LPC214X_EP0_OUT];
+ struct lpc214x_req_s *privreq = (struct lpc214x_req_s *)sq_peek(&ep0->reqlist);
+ struct usb_ctrlreq_s req;
+ uint16 index;
+ ubyte epphy;
+ ubyte response[2];
+ int ret;
+
+ /* Starting a control request? */
+
+ if (priv->usbdev.speed == USB_SPEED_UNKNOWN)
+ {
+ priv->usbdev.speed = USB_SPEED_FULL;
+ lpc214x_usbcmd(CMD_USB_DEV_CONFIG, 1);
+ }
+
+ /* Terminate any pending requests */
+
+ while (!sq_empty(&ep0->reqlist))
+ {
+ sint16 result = OK;
+ if (privreq->req.xfrd != privreq->req.len)
+ {
+ result = -EPROTO;
+ }
+
+ lpc214x_reqcomplete(ep0, result);
+ }
+
+ /* Assume NOT stalled */
+
+ ep0->stalled = 0;
+ priv->stalled = 0;
+
+ /* Read EP0 data */
+
+ ret = lpc214x_epread(LPC214X_EP0_OUT, (ubyte*)&req, sizeof(struct usb_ctrlreq_s));
+ if (ret <= 0)
+ {
+ return;
+ }
+
+ /* Dispatch any non-standard requests */
+
+ ep0->in = (req.type & USB_DIR_IN) != 0;
+ if ((req.type & USB_REQ_TYPE_MASK) != USB_REQ_TYPE_STANDARD)
+ {
+ lpc214x_dispatchrequest(priv, &req);
+ return;
+ }
+
+ /* Handle standard request. Pick off the things of interest to the
+ * USB device controller driver; pass what is left to the class driver
+ */
+
+ switch (req.req)
+ {
+ case USB_REQ_GETSTATUS:
+ {
+ /* Length must be 2, from device, and value == 0 */
+
+ if (!priv->paddrset || GETUINT16(req.len) != 2 ||
+ (req.type & USB_REQ_DIR_IN) == 0 || GETUINT16(req.value) != 0)
+ {
+ priv->stalled = 1;
+ }
+ else
+ {
+ switch (req.type & USB_REQ_RECIPIENT_MASK)
+ {
+ case USB_REQ_RECIPIENT_ENDPOINT:
+ {
+ usbtrace(TRACE_INTDECODE(LPC214X_TRACEINTID_EPGETSTATUS), 0);
+ epphy = USB_EPNO(GETUINT16(req.index)) << 1;
+ if (epphy < LPC214X_NPHYSENDPOINTS)
+ {
+ if ((lpc214x_usbcmd(CMD_USB_EP_SELECT|epphy, 0) & CMD_USB_EPSELECT_ST) != 0)
+ {
+ response[0] = 1; /* Stalled */
+ }
+ else
+ {
+ response[0] = 0; /* Not stalled */
+ }
+ response[1] = 0;
+ lpc214x_epwrite(LPC214X_EP0_IN, response, 2);
+ priv->ep0state = LPC214X_EP0SHORTWRITE;
+ }
+ else
+ {
+ priv->stalled = 1;
+ }
+ }
+ break;
+
+ case USB_REQ_RECIPIENT_DEVICE:
+ {
+ index = GETUINT16(req.index);
+ if (index == 0)
+ {
+ usbtrace(TRACE_INTDECODE(LPC214X_TRACEINTID_DEVGETSTATUS), 0);
+
+ /* Features: Remote Wakeup=YES; selfpowered=? */
+
+ response[0] = (priv->selfpowered << USB_FEATURE_SELFPOWERED) |
+ (1 << USB_FEATURE_REMOTEWAKEUP);
+ response[1] = 0;
+ lpc214x_epwrite(LPC214X_EP0_IN, response, 2);
+ priv->ep0state = LPC214X_EP0SHORTWRITE;
+ }
+ else
+ {
+ priv->stalled = 1;
+ }
+ }
+ break;
+
+ case USB_REQ_RECIPIENT_INTERFACE:
+ {
+ usbtrace(TRACE_INTDECODE(LPC214X_TRACEINTID_IFGETSTATUS), 0);
+ response[0] = 0;
+ response[1] = 0;
+ lpc214x_epwrite(LPC214X_EP0_IN, response, 2);
+ priv->ep0state = LPC214X_EP0SHORTWRITE;
+ }
+ break;
+
+ default:
+ {
+ priv->stalled = 1;
+ }
+ break;
+ }
+ }
+ }
+ break;
+
+ case USB_REQ_CLEARFEATURE:
+ {
+ usbtrace(TRACE_INTDECODE(LPC214X_TRACEINTID_CLEARFEATURE), 0);
+ if (req.type != USB_REQ_RECIPIENT_ENDPOINT)
+ {
+ lpc214x_dispatchrequest(priv, &req);
+ }
+ else if (priv->paddrset && GETUINT16(req.value) == USB_ENDPOINT_HALT &&
+ GETUINT16(req.index) < LPC214X_NLOGENDPOINTS && GETUINT16(req.len) == 0)
+ {
+ ubyte epphys = LPC214X_EP_LOG2PHY(GETUINT16(req.index));
+ priv->eplist[epphys].halted = 0;
+ lpc214x_epwrite(LPC214X_EP0_IN, NULL, 0);
+ priv->ep0state = LPC214X_EP0STATUSIN;
+ }
+ else
+ {
+ priv->stalled = 1;
+ }
+ }
+ break;
+
+ case USB_REQ_SETFEATURE:
+ {
+ usbtrace(TRACE_INTDECODE(LPC214X_TRACEINTID_SETFEATURE), 0);
+ if (req.type == USB_REQ_RECIPIENT_DEVICE &&
+ GETUINT16(req.value) == USB_FEATURE_TESTMODE)
+ {
+ uvdbg("test mode: %d\n", GETUINT16(req.index));
+ }
+ else if (req.type != USB_REQ_RECIPIENT_ENDPOINT)
+ {
+ lpc214x_dispatchrequest(priv, &req);
+ }
+ else if (priv->paddrset && GETUINT16(req.value) == USB_ENDPOINT_HALT &&
+ GETUINT16(req.index) < LPC214X_NLOGENDPOINTS && GETUINT16(req.len) == 0)
+ {
+ ubyte epphys = LPC214X_EP_LOG2PHY(GETUINT16(req.index));
+ priv->eplist[epphys].halted = 1;
+ lpc214x_epwrite(LPC214X_EP0_IN, NULL, 0);
+ priv->ep0state = LPC214X_EP0STATUSIN;
+ }
+ else
+ {
+ priv->stalled = 1;
+ }
+ }
+ break;
+
+ case USB_REQ_SETADDRESS:
+ {
+ usbtrace(TRACE_INTDECODE(LPC214X_TRACEINTID_SETADDRESS), 0);
+ if ((req.type == USB_REQ_RECIPIENT_DEVICE) &&
+ (GETUINT16(req.index) == 0) && (GETUINT16(req.len) == 0) &&
+ (GETUINT16(req.value) < 128))
+ {
+ lpc214x_epwrite(LPC214X_EP0_IN, NULL, 0);
+ priv->eplist[LPC214X_EP0_OUT].eplog = req.value[0];
+ priv->eplist[LPC214X_EP0_IN].eplog = req.value[0];
+ priv->ep0state = LPC214X_EP0SETADDRESS;
+ }
+ else
+ {
+ priv->stalled = 1;
+ }
+ }
+ break;
+
+ case USB_REQ_GETDESCRIPTOR:
+ case USB_REQ_SETDESCRIPTOR:
+ case USB_REQ_GETCONFIGURATION:
+ {
+ if (priv->paddrset && (GETUINT16(req.value) == 0) &&
+ (GETUINT16(req.index) == 0) && (GETUINT16(req.len) == 1))
+ {
+ lpc214x_dispatchrequest(priv, &req);
+ }
+ else
+ {
+ priv->stalled = 1;
+ }
+ }
+ break;
+
+
+ case USB_REQ_SETCONFIGURATION:
+ case USB_REQ_GETINTERFACE:
+ case USB_REQ_SETINTERFACE:
+ {
+ lpc214x_dispatchrequest(priv, &req);
+ }
+ break;
+
+ case USB_REQ_SYNCHFRAME:
+ break;
+
+ default:
+ priv->stalled = 1;
+ break;
+ }
+
+ if (priv->stalled)
+ {
+ usbtrace(TRACE_ERROR(LPC214X_TRACEERR_STALLED), priv->ep0state);
+ lpc214x_epstall(&ep0->ep, FALSE);
+ lpc214x_epstall(&ep0->ep, FALSE);
+ }
+}
+
+/*******************************************************************************
+ * Name: lpc214x_ep0dataoutinterrupt
+ *
+ * Description:
+ * USB Ctrl EP Data OUT Event. This is logically part of the USB interrupt
+ * handler.
+ *
+ *******************************************************************************/
+
+static inline void lpc214x_ep0dataoutinterrupt(struct lpc214x_usbdev_s *priv)
+{
+ struct lpc214x_ep_s *ep0;
+ uint32 pktlen;
+
+ /* Copy new setup packet int setup buffer */
+
+ switch (priv->ep0state)
+ {
+ case LPC214X_EP0SHORTWRITE:
+ {
+ priv->ep0state = LPC214X_EP0STATUSOUT;
+ pktlen = lpc214x_epread(LPC214X_EP0_OUT, NULL, CONFIG_USBDEV_EP0_MAXSIZE);
+ if (LPC214X_READOVERRUN(pktlen))
+ {
+ lpc214x_ep0setup(priv);
+ }
+ }
+ break;
+
+ case LPC214X_EP0SHORTWRSENT:
+ {
+ priv->ep0state = LPC214X_EP0IDLE;
+ pktlen = lpc214x_epread(LPC214X_EP0_OUT, NULL, CONFIG_USBDEV_EP0_MAXSIZE);
+ if (LPC214X_READOVERRUN(pktlen))
+ {
+ lpc214x_ep0setup(priv);
+ }
+ }
+ break;
+
+ case LPC214X_EP0IDLE:
+ {
+ ep0 = &priv->eplist[LPC214X_EP0_OUT];
+ if (!sq_empty(&ep0->reqlist))
+ {
+ lpc214x_wrrequest(ep0);
+ }
+ }
+ break;
+
+ default:
+ priv->stalled = 1;
+ break;
+ }
+
+ if (priv->stalled)
+ {
+ usbtrace(TRACE_ERROR(LPC214X_TRACEERR_STALLED), priv->ep0state);
+ ep0 = &priv->eplist[LPC214X_EP0_OUT];
+ lpc214x_epstall(&ep0->ep, FALSE);
+ lpc214x_epstall(&ep0->ep, FALSE);
+ }
+ return;
+}
+
+/*******************************************************************************
+ * Name: lpc214x_ep0dataininterrupt
+ *
+ * Description:
+ * USB Ctrl EP Data IN Event. This is logically part of the USB interrupt
+ * handler.
+ *
+ *******************************************************************************/
+
+static inline void lpc214x_ep0dataininterrupt(struct lpc214x_usbdev_s *priv)
+{
+ struct lpc214x_ep_s *ep0;
+
+ switch (priv->ep0state)
+ {
+ case LPC214X_EP0STATUSOUT:
+ case LPC214X_EP0STATUSIN:
+ priv->ep0state = LPC214X_EP0IDLE;
+ break;
+
+ case LPC214X_EP0SHORTWRITE:
+ priv->ep0state = LPC214X_EP0SHORTWRSENT;
+ break;
+
+ case LPC214X_EP0SETADDRESS:
+ {
+ usbtrace(TRACE_INTDECODE(LPC214X_TRACEINTID_SETADDRESS), 0);
+
+ /* Set EP0 logical address */
+
+ ubyte eplog = priv->eplist[LPC214X_EP0_OUT].eplog;
+ lpc214x_usbcmd(CMD_USB_DEV_SETADDRESS, CMD_USB_SETADDRESS_DEVEN | eplog);
+ lpc214x_usbcmd(CMD_USB_DEV_SETADDRESS, CMD_USB_SETADDRESS_DEVEN | eplog);
+
+ /* Not yet fully configured */
+
+ lpc214x_usbcmd(CMD_USB_DEV_CONFIG, 0);
+ if (eplog)
+ {
+ priv->paddrset = 1;
+ priv->ep0state = LPC214X_EP0IDLE;
+ }
+ }
+ break;
+
+ default:
+ priv->stalled = 1;
+ break;
+ }
+
+ if (priv->stalled)
+ {
+ usbtrace(TRACE_ERROR(LPC214X_TRACEERR_STALLED), priv->ep0state);
+ ep0 = &priv->eplist[LPC214X_EP0_IN];
+ lpc214x_epstall(&ep0->ep, FALSE);
+ lpc214x_epstall(&ep0->ep, FALSE);
+ }
+}
+
+/*******************************************************************************
+ * Name: lpc214x_usbinterrupt
+ *
+ * Description:
+ * USB interrupt handler
+ *
+ *******************************************************************************/
+
+static int lpc214x_usbinterrupt(int irq, FAR void *context)
+{
+ struct lpc214x_usbdev_s *priv = &g_usbdev;
+ struct lpc214x_ep_s *privep ;
+
+ uint32 devintstatus; /* Sampled state of the device interrupt status register */
+ uint32 epintstatus; /* Sampled state of the endpoint interrupt status register */
+#ifdef CONFIG_LPC214X_USBDEV_DMA
+ uint32 dmaintstatus; /* Sampled state of dma interrupt status register */
+#endif
+ uint32 softprio; /* Current priority interrupt bitset */
+ uint32 pending; /* Pending subset of priority interrupt bitset */
+ ubyte epphy; /* Physical endpoint number being processed */
+ int i;
+
+ usbtrace(TRACE_INTENTRY(LPC214X_TRACEINTID_USB), 0);
+
+ /* Read the device interrupt status register */
+
+ devintstatus = getreg32(LPC214X_USBDEV_DEVINTST);
+
+#ifdef CONFIG_LPC214X_USBDEV_DMA
+ /* Check for low priority and high priority (non-DMA) interrupts */
+
+ if ((getreg(LPC214X_USBDEV_INTST) & (USBDEV_INTST_REQLP|USBDEV_INTST_REQHP)) != 0)
+ {
+#endif
+#ifdef CONFIG_LPC214X_USBDEV_EPFAST_INTERRUPT
+ /* Fast EP interrupt */
+
+ if ((devintstatus & USBDEV_DEVINT_EPFAST) != 0)
+ {
+ /* Clear Fast EP interrupt */
+
+ putreg32(USBDEV_DEVINT_EPFAST, LPC214X_USBDEV_DEVINTCLR);
+ usbtrace(TRACE_INTDECODE(LPC214X_TRACEINTID_EPFAST), 0);
+
+ /* Do what? */
+ }
+
+#endif
+
+#if CONFIG_DEBUG
+ /* USB engine error interrupt */
+
+ if ((devintstatus & USBDEV_DEVINT_EPRINT))
+ {
+ ubyte errcode;
+
+ /* Clear the error interrupt */
+
+ putreg32(USBDEV_DEVINT_EPRINT, LPC214X_USBDEV_DEVINTCLR);
+
+ /* And show what error occurred */
+
+ errcode = (ubyte)lpc214x_usbcmd(CMD_USB_DEV_READERRORSTATUS, 0) & 0x0f;
+ usbtrace(TRACE_INTDECODE(LPC214X_TRACEINTID_EPRINT), (uint16)errcode);
+ }
+#endif
+
+#ifdef CONFIG_LPC214X_USBDEV_FRAME_INTERRUPT
+ /* Frame interrupt */
+
+ if ((devintstatus & USBDEV_DEVINT_FRAME) != 0)
+ {
+ /* Clear the frame interrupt */
+
+ putreg32(USBDEV_DEVINT_FRAME, LPC214X_USBDEV_DEVINTCLR);
+ usbtrace(TRACE_INTDECODE(LPC214X_TRACEINTID_FRAME), 0);
+
+ /* Then read the start of frame value */
+
+ priv->sof = (uint16)lpc214x_usbcmd(CMD_USB_DEV_READFRAMENO, 0);
+ }
+#endif
+
+ /* Device Status interrupt */
+
+ if ((devintstatus & USBDEV_DEVINT_DEVSTAT) != 0)
+ {
+ /* Clear Device status interrupt */
+
+ putreg32(USBDEV_DEVINT_DEVSTAT, LPC214X_USBDEV_DEVINTCLR);
+
+ /* Get device status */
+
+ g_usbdev.devstatus = lpc214x_usbcmd(CMD_USB_DEV_GETSTATUS, 0);
+ usbtrace(TRACE_INTDECODE(LPC214X_TRACEINTID_DEVSTAT), (uint16)g_usbdev.devstatus);
+
+ /* Device connection status */
+
+ if (DEVSTATUS_CONNCHG(g_usbdev.devstatus))
+ {
+ usbtrace(TRACE_INTDECODE(LPC214X_TRACEINTID_CONNECTCHG), 0);
+ if (DEVSTATUS_CONNECT(g_usbdev.devstatus))
+ {
+ /* Host is connected */
+
+ if (!priv->attached)
+ {
+ /* We have a transition from unattached to attached */
+
+ usbtrace(TRACE_INTDECODE(LPC214X_TRACEINTID_CONNECTED), 0);
+ priv->usbdev.speed = USB_SPEED_UNKNOWN;
+ lpc214x_usbcmd(CMD_USB_DEV_CONFIG, 0);
+ priv->attached = 1;
+ }
+ }
+
+ /* Otherwise the host is not attached */
+
+ else if (priv->attached)
+ {
+ usbtrace(TRACE_INTDECODE(LPC214X_TRACEINTID_DISCONNECTED), 0);
+ priv->usbdev.speed = USB_SPEED_UNKNOWN;
+ lpc214x_usbcmd(CMD_USB_DEV_CONFIG, 0);
+ priv->attached = 0;
+ priv->paddrset = 0;
+ }
+ }
+
+ /* Device suspend status */
+
+ if (DEVSTATUS_SUSPCHG(g_usbdev.devstatus))
+ {
+ usbtrace(TRACE_INTDECODE(LPC214X_TRACEINTID_SUSPENDCHG), 0);
+ }
+
+ /* Device reset */
+
+ if (DEVSTATUS_RESET(g_usbdev.devstatus))
+ {
+ usbtrace(TRACE_INTDECODE(LPC214X_TRACEINTID_DEVRESET), 0);
+ lpc214x_usbreset(priv);
+ }
+ }
+
+ /* Slow EP interrupt */
+
+ if ((devintstatus & USBDEV_DEVINT_EPSLOW) != 0)
+ {
+ /* Clear Slow EP interrupt */
+
+ putreg32(USBDEV_DEVINT_EPSLOW, LPC214X_USBDEV_DEVINTCLR);
+ usbtrace(TRACE_INTDECODE(LPC214X_TRACEINTID_EPSLOW), 0);
+
+ do
+ {
+ /* Read the endpoint interrupt status register */
+
+ epintstatus = getreg32(LPC214X_USBDEV_EPINTST);
+
+ /* Loop twice: Process software high priority interrupts
+ * on the first pass and low priority interrupts on the
+ * second.
+ */
+
+ softprio = priv->softprio;
+ for (i = 0; i < 2; i++, softprio = ~softprio)
+ {
+ /* On the first time through the loop, pending will be
+ * the bitset of high priority pending interrupts; on the
+ * second time throught it will be the bitset of low
+ * priority interrupts.
+ */
+
+ pending = epintstatus & softprio;
+
+ /* EP0 OUT interrupt indicated by bit0 == 1 */
+
+ if ((pending & 1) != 0)
+ {
+ /* Clear the endpoint interrupt */
+
+ uint32 result = lpc214x_epclrinterrupt(LPC214X_CTRLEP_OUT);
+ if (result & USBDEV_EPSETUPPACKET)
+ {
+ usbtrace(TRACE_INTDECODE(LPC214X_TRACEINTID_EP0SETUP), (uint16)result);
+ lpc214x_ep0setup(priv);
+ }
+ else
+ {
+ usbtrace(TRACE_INTDECODE(LPC214X_TRACEINTID_EP0OUT), priv->ep0state);
+ lpc214x_ep0dataoutinterrupt(priv);
+ }
+ break;
+ }
+
+ /* EP0 IN interrupt indicated by bit1 == 1 */
+
+ if ((pending & 2) != 0)
+ {
+ /* Clear the endpoint interrupt */
+
+ usbtrace(TRACE_INTDECODE(LPC214X_TRACEINTID_EP0IN), priv->ep0state);
+ (void)lpc214x_epclrinterrupt(LPC214X_CTRLEP_IN);
+ lpc214x_ep0dataininterrupt(priv);
+ }
+ pending >>= 2;
+
+ /* All other endpoints EP 1-31 */
+
+ for (epphy = 2; pending; epphy++, pending >>= 1)
+ {
+ /* Is the endpoint interrupt pending? */
+
+ if ((pending & 1) != 0)
+ {
+ /* Yes.. clear the endpoint interrupt */
+
+ (void)lpc214x_epclrinterrupt(epphy);
+
+ /* Get the endpoint sructure corresponding to the physical
+ * endpoint number.
+ */
+
+ privep = &priv->eplist[epphy];
+
+ /* Check for complete on IN or OUT endpoint. Odd physical
+ * endpoint addresses are IN endpoints.
+ */
+
+ if ((epphy & 1) != 0)
+ {
+ /* IN: device-to-host */
+
+ usbtrace(TRACE_INTDECODE(LPC214X_TRACEINTID_EPOUT), (uint16)epphy);
+ if (priv->usbdev.speed == USB_SPEED_UNKNOWN)
+ {
+ priv->usbdev.speed = USB_SPEED_FULL;
+ lpc214x_usbcmd(CMD_USB_DEV_CONFIG, 1);
+ }
+
+ /* Write host data from the current write request */
+
+ if (!sq_empty(&privep->reqlist))
+ {
+ lpc214x_wrrequest(privep);
+ }
+ }
+ else
+ {
+ /* OUT: host-to-device */
+
+ usbtrace(TRACE_INTDECODE(LPC214X_TRACEINTID_EPIN), (uint16)epphy);
+
+ /* Read host data into the current read request */
+
+ if (!sq_empty(&privep->reqlist))
+ {
+ lpc214x_rdrequest(privep);
+ }
+ else
+ {
+ uvdbg("Pending interrupt\n");
+ priv->rxpending = 1;
+ }
+ }
+ }
+ }
+ }
+ }
+ while (epintstatus);
+ }
+#ifdef CONFIG_LPC214X_USBDEV_DMA
+ }
+
+ /* Check for DMA interrupts */
+
+ if ((getreg(LPC214X_USBDEV_INTST) & USBDEV_INTST_REQDMA) != 0)
+ {
+ /* First Software High priority and then low priority */
+
+ uint32 tmp;
+
+ /* Collect the DMA interrupt sources */
+
+ dmaintstatus = 0;
+ tmp = getreg32(LPC214X_USBDEV_EOTINTST);
+ if (getreg32(LPC214X_USBDEV_DMAINTEN) & 1)
+ {
+ dmaintstatus |= tmp;
+ }
+ putreg32(tmp, LPC214X_USBDEV_EOTINTCLR);
+
+ tmp = getreg32(LPC214X_USBDEV_NDDRINTST);
+ if (getreg32(LPC214X_USBDEV_DMAINTEN) & 2)
+ {
+ dmaintstatus |= tmp;
+ }
+ putreg32(tmp, LPC214X_USBDEV_NDDRINTCLR);
+
+ tmp = getreg32(LPC214X_USBDEV_SYSERRINTST);
+ if (getreg32(LPC214X_USBDEV_DMAINTEN) & 4)
+ {
+ dmaintstatus |= tmp;
+ }
+ putreg32(tmp, LPC214X_USBDEV_SYSERRINTCLR);
+
+ /* Loop twice: Process software high priority interrupts on the
+ * first pass and low priority interrupts on the second.
+ */
+
+ softprio = priv->softprio;
+ for (i = 0; i < 2; i++, softprio = ~softprio)
+ {
+ /* On the first time through the loop, pending will be
+ * the bitset of high priority pending interrupts; on the
+ * second time throught it will be the bitset of low
+ * priority interrupts. Note that EP0 IN and OUT are
+ * omitted.
+ */
+
+ pending = (dmaintstatus & softprio) >> 2;
+ for (epphy = 2; pending; epphy++, pending >>= 1)
+ {
+ if ((pending & 1) != 0)
+ {
+ usbtrace(TRACE_INTDECODE(LPC214X_TRACEINTID_EPDMA), (uint16)epphy);
+#warning DO WHAT?
+ }
+ }
+ }
+ }
+#endif
+ usbtrace(TRACE_INTEXIT(LPC214X_TRACEINTID_USB), 0);
+ return OK;
+}
+
+/*******************************************************************************
+ * Name: lpc214x_dmasetup
+ *
+ * Description:
+ * Setup for DMA Transfer
+ *
+ *******************************************************************************/
+
+#ifdef CONFIG_LPC214X_USBDEV_DMA
+static int lpc214x_dmasetup(struct lpc214x_usbdev_s *priv, ubyte epphy,
+ uint32 epmaxsize, uint32 nbytes, uint32 *isocpacket,
+ boolean isochronous);
+{
+ struct lpc214x_dmadesc_s *dmadesc = priv;
+ uint32 reg;
+
+#ifdef CONFIG_DEBUG
+ if (!priv || epphy < 2)
+ {
+ usbtrace(TRACE_ERROR(LPC214X_TRACEERR_INVALIDPARMS), 0);
+ return -EINVAL;
+ }
+#endif
+
+ /* Check if a DMA descriptor has been assigned. If not, than that indicates
+ * that we will have to do parallel I/O
+ */
+
+ if (!dmadesc)
+ {
+ usbtrace(TRACE_ERROR(LPC214X_TRACEERR_NODMADESC), 0);
+ return -EBUSY;
+ }
+
+ /* Verify that the DMA descriptor is available */
+
+ if ((dmadesc->status & USB_DMADESC_STATUSMASK) == USB_DMADESC_BEINGSERVICED)
+ {
+ usbtrace(TRACE_ERROR(LPC214X_TRACEERR_DMABUSY), 0);
+ return -EBUSY; /* Shouldn't happen */
+ }
+
+ /* Init DMA Descriptor */
+
+ dmadesc->nexdesc = 0;
+ dmadesc->config = USB_DMADESC_MODENORMAL |
+ ((epmaxsize << USB_DMADESC_PKTSIZESHIFT) & USB_DMADESC_PKTSIZEMASK) |
+ ((nbytes << USB_DMADESC_BULENSHIFT) & USB_DMADESC_BUFLENMASK);
+
+#ifdef CONFIG_USBDEV_ISOCHRONOUS
+ if (isochronous)
+ {
+ dmadesc->config |= USB_DMADESC_ISCOEP;
+ }
+#endif
+
+ dmadesc->start = (uint32)&dmadesc->buffer;
+ dmadesc->status = 0;
+
+#ifdef CONFIG_USBDEV_ISOCHRONOUS
+ dmadesc->size = (uint32)packet;
+#endif
+
+ /* Enable DMA tranfer for this endpoint */
+
+ putreq32(1 << epphy, LPC214X_USBDEV_EPDMAEN);
+
+ /* Check state of IN/OUT Ep buffer */
+
+ reg = lpc214x_usbcmd(CMD_USB_EP_SELECT | epphy, 0);
+
+ if (((epphy & 1) != 0 && (reg & 0x60) == 0) ||
+ ((epphy & 1) == 0 && (reg & 0x60) == 0x60))
+ {
+ /* DMA should be "being serviced" */
+
+ if ((dmadesc->status & USB_DMADESC_STATUSMASK) != USB_DMADESC_BEINGSERVICED))
+ {
+ /* Re-trigger the DMA Transfer */
+
+ putreq21(1 << epphy, LPC214X_USBDEV_DMARCLR);
+ putreq32(1 << epphy, LPC214X_USBDEV_EPDMAEN);
+ }
+ }
+ return OK;
+}
+#endif /* CONFIG_LPC214X_USBDEV_DMA */
+
+/*******************************************************************************
+ * Name: lpc214x_dmarestart
+ *
+ * Description:
+ * Restart DMA Transfer
+ *
+ *******************************************************************************/
+
+#ifdef CONFIG_LPC214X_USBDEV_DMA
+static void lpc214x_dmarestart(ubyte epphy, uint32 descndx)
+{
+ uint32 reg;
+
+ /* Clear DMA descriptor status */
+
+ USB_DmaDesc[descndx].status = 0;
+
+ /* Enable DMA transfer on the endpoint */
+
+ putreg32(1 << epph, LPC214X_USBDEV_EPDMAEN);
+
+ /* Check the state of IN/OUT EP buffer */
+
+ uint32 reg = lpc214x_usbcmd(CMD_USB_EP_SELECT | epphy, 0);
+ if (((epphy & 1) != 0 && (reg & 0x60) == 0) ||
+ ((epphy & 1) == 0 && (reg & 0x60) == 0x60))
+ {
+ /* Re-trigger the DMA Transfer */
+
+ putreq21(1 << epphy, LPC214X_USBDEV_DMARCLR);
+ putreq32(1 << epphy, LPC214X_USBDEV_EPDMAEN);
+ }
+}
+#endif /* CONFIG_LPC214X_USBDEV_DMA */
+
+/*******************************************************************************
+ * Name: lpc214x_dmadisable
+ *
+ * Description:
+ * Disable DMA transfer for the EP
+ *
+ *******************************************************************************/
+
+#ifdef CONFIG_LPC214X_USBDEV_DMA
+static void lpc214x_dmadisable(ubyte epphy)
+{
+ EPDMADIS = 1 << epphy;
+}
+#endif /* CONFIG_LPC214X_USBDEV_DMA */
+
+/*******************************************************************************
+ * Endpoint operations
+ *******************************************************************************/
+
+/*******************************************************************************
+ * Name: lpc214x_epconfigure
+ *
+ * Description:
+ * Configure endpoint, making it usable
+ *
+ *******************************************************************************/
+
+static int lpc214x_epconfigure(FAR struct usbdev_ep_s *ep,
+ FAR const struct usb_epdesc_s *desc)
+{
+ FAR struct lpc214x_ep_s *privep = (FAR struct lpc214x_ep_s *)ep;
+ uint32 inten;
+ int eplog;
+ int epphy;
+
+ usbtrace(TRACE_EPCONFIGURE, privep->epphy);
+
+ eplog = desc->addr;
+ epphy = LPC214X_EP_LOG2PHY(eplog);
+
+ /* Realize the endpoint */
+
+ lpc214x_eprealize(privep, 1, GETUINT16(desc->mxpacketsize));
+
+ /* Enable and reset EP -- twice */
+
+ lpc214x_usbcmd(CMD_USB_EP_SETSTATUS | epphy, 0);
+ lpc214x_usbcmd(CMD_USB_EP_SETSTATUS | epphy, 0);
+
+#ifdef CONFIG_LPC214X_USBDEV_DMA
+ /* Enable DMA Ep interrupt (WO) */
+
+ putreg32(1 << epphy, LPC214X_USBDEV_EPDMAEN);
+#else
+ /* Enable Ep interrupt (R/W) */
+
+ inten = getreg32(LPC214X_USBDEV_EPINTEN);
+ inten |= (1 << epphy);
+ putreg32(inten, LPC214X_USBDEV_EPINTEN);
+#endif
+ return OK;
+}
+
+/*******************************************************************************
+ * Name: lpc214x_epdisable
+ *
+ * Description:
+ * The endpoint will no longer be used
+ *
+ *******************************************************************************/
+
+static int lpc214x_epdisable(FAR struct usbdev_ep_s *ep)
+{
+ FAR struct lpc214x_ep_s *privep = (FAR struct lpc214x_ep_s *)ep;
+ irqstate_t flags;
+ uint32 mask = (1 << privep->epphy);
+ uint32 reg;
+
+#ifdef CONFIG_DEBUG
+ if (!ep)
+ {
+ usbtrace(TRACE_ERROR(LPC214X_TRACEERR_INVALIDPARMS), 0);
+ return -EINVAL;
+ }
+#endif
+ usbtrace(TRACE_EPDISABLE, privep->epphy);
+
+ /* Cancel any ongoing activity */
+
+ flags = irqsave();
+ lpc214x_cancelrequests(privep);
+
+ /* Disable endpoint and interrupt */
+
+ reg = getreg32(LPC214X_USBDEV_REEP);
+ reg &= ~mask;
+ putreg32(reg, LPC214X_USBDEV_REEP);
+
+ putreg32(mask, LPC214X_USBDEV_EPDMADIS);
+
+ reg = getreg32(LPC214X_USBDEV_EPINTEN);
+ reg &= ~mask;
+ putreg32(reg, LPC214X_USBDEV_EPINTEN);
+
+ uvdbg("Disabled ep\n");
+ irqrestore(flags);
+ return OK;
+}
+
+/*******************************************************************************
+ * Name: lpc214x_epallocreq
+ *
+ * Description:
+ * Allocate an I/O request
+ *
+ *******************************************************************************/
+
+static FAR struct usbdev_req_s *lpc214x_epallocreq(FAR struct usbdev_ep_s *ep)
+{
+ FAR struct lpc214x_req_s *privreq;
+
+#ifdef CONFIG_DEBUG
+ if (!ep)
+ {
+ usbtrace(TRACE_ERROR(LPC214X_TRACEERR_INVALIDPARMS), 0);
+ return NULL;
+ }
+#endif
+ usbtrace(TRACE_EPALLOCREQ, ((FAR struct lpc214x_ep_s *)ep)->epphy);
+
+ privreq = (FAR struct lpc214x_req_s *)malloc(sizeof(struct lpc214x_req_s));
+ if (!privreq)
+ {
+ usbtrace(TRACE_ERROR(LPC214X_TRACEERR_ALLOCFAIL), 0);
+ return NULL;
+ }
+
+ memset(privreq, 0, sizeof(struct lpc214x_req_s));
+ return &privreq->req;
+}
+
+/*******************************************************************************
+ * Name: lpc214x_epfreereq
+ *
+ * Description:
+ * Free an I/O request
+ *
+ *******************************************************************************/
+
+static void lpc214x_epfreereq(FAR struct usbdev_ep_s *ep, FAR struct usbdev_req_s *req)
+{
+ FAR struct lpc214x_req_s *privreq = (FAR struct lpc214x_req_s *)req;
+
+#ifdef CONFIG_DEBUG
+ if (!ep || !req)
+ {
+ usbtrace(TRACE_ERROR(LPC214X_TRACEERR_INVALIDPARMS), 0);
+ return;
+ }
+#endif
+ usbtrace(TRACE_EPFREEREQ, ((FAR struct lpc214x_ep_s *)ep)->epphy);
+
+ free(privreq);
+}
+
+/*******************************************************************************
+ * Name: lpc214x_epallocbuffer
+ *
+ * Description:
+ * Allocate an I/O buffer
+ *
+ *******************************************************************************/
+
+#ifdef CONFIG_LPC214X_USBDEV_DMA
+static FAR void *lpc214x_epallocbuffer(FAR struct usbdev_ep_s *ep, uint16 nbytes)
+{
+ FAR struct lpc214x_ep_s *privep = (FAR struct lpc214x_ep_s *)ep;
+ int descndx;
+
+ usbtrace(TRACE_EPALLOCBUFFER, privep->epphy);
+
+ /* Find a free DMA description */
+
+#error "LOGIC INCOMPLETE"
+
+ /* Set UDCA to the allocated DMA descriptor for this endpoint */
+
+ USB_UDCA[privep->epphy] = &USB_DDESC[descndx];
+ return &USB_DDESC[descndx]
+}
+#endif
+
+/*******************************************************************************
+ * Name: lpc214x_epfreebuffer
+ *
+ * Description:
+ * Free an I/O buffer
+ *
+ *******************************************************************************/
+
+#ifdef CONFIG_LPC214X_USBDEV_DMA
+static void lpc214x_epfreebuffer(FAR struct usbdev_ep_s *ep, FAR void *buf)
+{
+ FAR struct lpc214x_ep_s *privep = (FAR struct lpc214x_ep_s *)ep;
+
+ usbtrace(TRACE_EPFREEBUFFER, privep->epphy);
+
+ /* Indicate that there is no DMA descriptor associated with this endpoint */
+
+ USB_UDCA[privep->epphy] = NULL;
+
+ /* Mark the DMA descriptor as free for re-allocation */
+
+#error "LOGIC INCOMPLETE"
+}
+#endif
+
+/*******************************************************************************
+ * Name: lpc214x_epsubmit
+ *
+ * Description:
+ * Submit an I/O request to the endpoint
+ *
+ *******************************************************************************/
+
+static int lpc214x_epsubmit(FAR struct usbdev_ep_s *ep, FAR struct usbdev_req_s *req)
+{
+ FAR struct lpc214x_req_s *privreq = (FAR struct lpc214x_req_s *)req;
+ FAR struct lpc214x_ep_s *privep = (FAR struct lpc214x_ep_s *)ep;
+ FAR struct lpc214x_usbdev_s *priv;
+ irqstate_t flags;
+ int ret = OK;
+
+#ifdef CONFIG_DEBUG
+ if (!req || !req->callback || !req->buf || !ep)
+ {
+ usbtrace(TRACE_ERROR(LPC214X_TRACEERR_INVALIDPARMS), 0);
+ return -EINVAL;
+ }
+#endif
+ usbtrace(TRACE_EPSUBMIT, privep->epphy);
+ priv = privep->dev;
+
+ if (!priv->driver || priv->usbdev.speed == USB_SPEED_UNKNOWN)
+ {
+ usbtrace(TRACE_ERROR(LPC214X_TRACEERR_NOTCONFIGURED), 0);
+ return -ESHUTDOWN;
+ }
+
+ req->result = -EINPROGRESS;
+ req->xfrd = 0;
+
+ /* Check for NULL packet */
+
+ flags = irqsave();
+ if (req->len == 0 && (privep->in || privep->epphy == 3))
+ {
+ usbtrace(TRACE_ERROR(LPC214X_TRACEERR_NULLPACKET), 0);
+ sq_addlast(&privreq->sqe, &privep->reqlist);
+ goto success_notransfer;
+ }
+
+ /* Has everything been sent? Or are we stalled? */
+
+ if (!sq_empty(&privep->reqlist) && !privep->stalled)
+ {
+ /* Handle zero-length transfers on EP0 */
+
+ if (privep->epphy == 0 && req->len == 0)
+ {
+ /* Nothing to transfer -- exit success, zero-bytes transferred */
+
+ lpc214x_reqcomplete(privep, OK);
+ goto success_notransfer;
+ }
+
+ /* Handle IN requests */
+
+ if ((privep->in) || privep->epphy == 3)
+ {
+ ret = lpc214x_wrrequest(privep);
+ }
+
+ /* Handle pending OUT requests */
+
+ else if (priv->rxpending)
+ {
+ ret = lpc214x_rdrequest(privep);
+ priv->rxpending = 0;
+ }
+ else
+ {
+ usbtrace(TRACE_ERROR(LPC214X_TRACEERR_BADREQUEST), 0);
+ ret = ERROR;
+ goto errout;
+ }
+ }
+
+ /* Add to endpoint's request queue */
+
+ if (ret >= 0)
+ {
+ sq_addlast(&privreq->sqe, &privep->reqlist);
+ }
+
+success_notransfer:
+errout:
+ irqrestore(flags);
+ return ret;
+}
+
+/*******************************************************************************
+ * Name: lpc214x_epcancel
+ *
+ * Description:
+ * Cancel an I/O request previously sent to an endpoint
+ *
+ *******************************************************************************/
+
+static int lpc214x_epcancel(FAR struct usbdev_ep_s *ep, FAR struct usbdev_req_s *req)
+{
+ FAR struct lpc214x_ep_s *privep = (FAR struct lpc214x_ep_s *)ep;
+ FAR struct lpc214x_usbdev_s *priv;
+ irqstate_t flags;
+
+#ifdef CONFIG_DEBUG
+ if (!ep || !req)
+ {
+ usbtrace(TRACE_ERROR(LPC214X_TRACEERR_INVALIDPARMS), 0);
+ return -EINVAL;
+ }
+#endif
+ usbtrace(TRACE_EPCANCEL, privep->epphy);
+ priv = privep->dev;
+
+ flags = irqsave();
+ lpc214x_cancelrequests(privep);
+ irqrestore(flags);
+ return OK;
+}
+
+/*******************************************************************************
+ * Name: lpc214x_epstall
+ *
+ * Description:
+ * Stall or resume and endpoint
+ *
+ *******************************************************************************/
+
+static int lpc214x_epstall(FAR struct usbdev_ep_s *ep, boolean resume)
+{
+ FAR struct lpc214x_ep_s *privep = (FAR struct lpc214x_ep_s *)ep;
+ usbtrace(resume ? TRACE_EPRESUME : TRACE_EPSTALL, privep->epphy);
+ lpc214x_usbcmd(CMD_USB_EP_SETSTATUS | privep->epphy, (resume ? 0 : USBDEV_EPSTALL));
+ return OK;
+}
+
+/*******************************************************************************
+ * Device operations
+ *******************************************************************************/
+
+/*******************************************************************************
+ * Name: lcp214x_allocep
+ *
+ * Description:
+ * Allocate an endpoint matching the parameters.
+ *
+ * Input Parameters:
+ * epphy - 7-bit physical endpoint number (without direction bit). Zero means
+ * that any endpoint matching the other requirements will suffice.
+ * in - TRUE: IN (device-to-host) endpoint requested
+ * eptype - Endpoint type. One of {USB_EP_ATTR_XFER_ISOC, USB_EP_ATTR_XFER_BULK,
+ * USB_EP_ATTR_XFER_INT}
+ *
+ *******************************************************************************/
+
+static FAR struct usbdev_ep_s *lcp214x_allocep(FAR struct usbdev_s *dev, ubyte epphy,
+ boolean in, ubyte eptype)
+{
+ FAR struct lpc214x_usbdev_s *priv = (FAR struct lpc214x_usbdev_s *)dev;
+ uint32 epset = LPC214X_EPALLSET;
+ irqstate_t flags;
+ int epndx = 0;
+
+ usbtrace(TRACE_DEVALLOCEP, 0);
+
+ /* epphy=0 means that any endpoint will do */
+
+ if (epphy > 0)
+ {
+ if (epphy >= LPC214X_NLOGENDPOINTS)
+ {
+ usbtrace(TRACE_ERROR(LPC214X_TRACEERR_BADEPNO), 0);
+ return NULL;
+ }
+
+ epset &= 3 << epphy;
+ }
+
+ /* Get the subset matching the requested direction */
+
+ if (in)
+ {
+ epset &= LPC214X_EPINSET;
+ }
+ else
+ {
+ epset &= LPC214X_EPOUTSET;
+ }
+
+ /* Get the subset matching the requested type */
+
+ switch (eptype)
+ {
+ case USB_EP_ATTR_XFER_INT: /* Interrupt endpoint */
+ epset &= LPC214X_EPINTRSET;
+ break;
+
+ case USB_EP_ATTR_XFER_BULK: /* Bulk endpoint */
+ epset &= LPC214X_EPBULKSET;
+ break;
+
+ case USB_EP_ATTR_XFER_ISOC: /* Isochronous endpoint */
+ epset &= LPC214X_EPBULKSET;
+ break;
+
+ case USB_EP_ATTR_XFER_CONTROL: /* Control endpoint -- not a valid choice */
+ default:
+ usbtrace(TRACE_ERROR(LPC214X_TRACEERR_BADEPTYPE), 0);
+ return NULL;
+ }
+
+ /* Is the resulting endpoint supported by the LPC214x? */
+
+ if (epset)
+ {
+ /* Yes.. now see if any of the request endpoints are available */
+
+ flags = irqsave();
+ epset &= priv->epavail;
+ if (epset)
+ {
+ /* Select the lowest bit in the set of matching, available endpoints */
+
+ for (epndx = 2; epndx < LPC214X_NPHYSENDPOINTS; epndx++)
+ {
+ uint32 bit = 1 << epndx;
+ if ((epset & bit) == 0)
+ {
+ /* Mark the endpoint no longer available */
+
+ priv->wravail &= ~bit;
+ irqrestore(flags);
+
+ /* And return the pointer to the standard endpoint structure */
+
+ return &priv->eplist[epndx].ep;
+ }
+ }
+ /* Shouldn't get here */
+ }
+ irqrestore(flags);
+ }
+
+ usbtrace(TRACE_ERROR(LPC214X_TRACEERR_NOEP), 0);
+ return NULL;
+}
+
+/*******************************************************************************
+ * Name: lpc214x_freeep
+ *
+ * Description:
+ * Free the previously allocated endpoint
+ *
+ *******************************************************************************/
+
+static void lpc214x_freeep(FAR struct usbdev_s *dev, FAR struct usbdev_ep_s *ep)
+{
+ FAR struct lpc214x_usbdev_s *priv = (FAR struct lpc214x_usbdev_s *)dev;
+ FAR struct lpc214x_ep_s *privep = (FAR struct lpc214x_ep_s *)ep;
+ irqstate_t flags;
+
+ usbtrace(TRACE_DEVFREEEP, (uint16)privep->epphy);
+
+ if (priv && privep)
+ {
+ /* Mark the endpoint as available */
+
+ flags = irqsave();
+ priv->wravail &= ~(1 << privep->epphy);
+ irqrestore(flags);
+ }
+}
+
+/*******************************************************************************
+ * Name: lpc214x_getframe
+ *
+ * Description:
+ * Returns the current frame number
+ *
+ *******************************************************************************/
+
+static int lpc214x_getframe(struct usbdev_s *dev)
+{
+#ifdef CONFIG_LPC214X_USBDEV_FRAME_INTERRUPT
+ FAR struct lpc214x_usbdev_s *priv = (FAR struct lpc214x_usbdev_s *)dev;
+
+ /* Return last valid value of SOF read by the interrupt handler */
+
+ usbtrace(TRACE_DEVGETFRAME, (uint16)priv->sof);
+ return priv->sof;
+#else
+ /* Return the last frame number detected by the hardware */
+
+ usbtrace(TRACE_DEVGETFRAME, 0);
+ return (int)lpc214x_usbcmd(CMD_USB_DEV_READFRAMENO, 0);
+#endif
+}
+
+/*******************************************************************************
+ * Name: lpc214x_wakeup
+ *
+ * Description:
+ * Tries to wake up the host connected to this device
+ *
+ *******************************************************************************/
+
+static int lpc214x_wakeup(struct usbdev_s *dev)
+{
+ ubyte arg = USBDEV_DEVSTATUS_SUSPEND;
+ irqstate_t flags;
+
+ usbtrace(TRACE_DEVWAKEUP, (uint16)g_usbdev.devstatus);
+
+ flags = irqsave();
+ if (DEVSTATUS_CONNECT(g_usbdev.devstatus))
+ {
+ arg |= USBDEV_DEVSTATUS_CONNECT;
+ }
+
+ lpc214x_usbcmd(CMD_USB_DEV_SETSTATUS, arg);
+ irqrestore(flags);
+ return OK;
+}
+
+/*******************************************************************************
+ * Name: lpc214x_selfpowered
+ *
+ * Description:
+ * Sets/clears the device selfpowered feature
+ *
+ *******************************************************************************/
+
+static int lpc214x_selfpowered(struct usbdev_s *dev, boolean selfpowered)
+{
+ FAR struct lpc214x_usbdev_s *priv = (FAR struct lpc214x_usbdev_s *)dev;
+
+ usbtrace(TRACE_DEVSELFPOWERED, (uint16)selfpowered);
+
+#ifdef CONFIG_DEBUG
+ if (!dev)
+ {
+ usbtrace(TRACE_ERROR(LPC214X_TRACEERR_INVALIDPARMS), 0);
+ return -ENODEV;
+ }
+#endif
+
+ priv->selfpowered = selfpowered;
+ return OK;
+}
+
+/*******************************************************************************
+ * Name: lpc214x_pullup
+ *
+ * Description:
+ * Software-controlled connect to/disconnect from USB host
+ *
+ *******************************************************************************/
+
+static int lpc214x_pullup(struct usbdev_s *dev, boolean enable)
+{
+ usbtrace(TRACE_DEVPULLUP, (uint16)enable);
+
+ /* Prohibit interruption during connection command */
+
+ irqstate_t flags = irqsave();
+
+ /* The USBDEV_DEVSTATUS_CONNECT bit in the CMD_USB_DEV_SETSTATUS command
+ * controls the LPC214x SoftConnect_N output pin that is used for SoftConnect.
+ */
+
+ lpc214x_usbcmd(CMD_USB_DEV_SETSTATUS, (enable ? USBDEV_DEVSTATUS_CONNECT : 0));
+ irqrestore(flags);
+ return OK;
+}
+
+/*******************************************************************************
+ * Public Functions
+ *******************************************************************************/
+
+/*******************************************************************************
+ * Name: up_usbinitialize
+ *
+ * Description:
+ * Initialize USB hardware.
+ *
+ * Assumptions:
+ * - This function is called very early in the initialization sequence
+ * - PLL initialization is not performed here but should been in the low-level
+ * boot logic. For the USB engine, FUSB=FOSC*PLL_M. The USB device controller
+ * clock is a 48MHz clock.
+ *
+ *******************************************************************************/
+
+void up_usbinitialize(void)
+{
+ struct lpc214x_usbdev_s *priv = &g_usbdev;
+ uint32 reg;
+
+ usbtrace(TRACE_DEVINIT, 0);
+
+ /* Initialize the device state structure softwate EP priority */
+
+ memset(priv, 0, sizeof(struct lpc214x_usbdev_s));
+ priv->usbdev.ops = &g_devops;
+ priv->wravail = LPC214X_EPALLSET;
+
+ /* Turn on USB power and clocking */
+
+ reg = getreg32(LPC214X_PCON_PCONP);
+ reg |= LPC214X_PCONP_PCUSB;
+ putreg32(reg, LPC214X_PCON_PCONP);
+
+ /* Enable Vbus sense and Connect */
+
+ reg = getreg32(LPC214X_PINSEL1);
+ reg = (reg & LPC214X_USBDEV_PINMASK) | LPC214X_USBDEV_PINSEL;
+ putreg32(reg, LPC214X_PINSEL1);
+
+ /* Attach USB controller interrupt handler */
+
+ if (irq_attach(LPC214X_USB_IRQ, lpc214x_usbinterrupt) != 0)
+ {
+ usbtrace(TRACE_ERROR(LPC214X_TRACEERR_IRQREGISTRATION), 0);
+ goto errout;
+ }
+
+ /* Enable USB inerrupts */
+
+ up_enable_irq(LPC214X_USB_IRQ);
+
+ /* Disconnect device */
+
+ lpc214x_pullup(&priv->usbdev, FALSE);
+
+ /* Enable EP0 for OUT (host-to-device) */
+
+ lpc214x_usbcmd(CMD_USB_DEV_SETADDRESS, CMD_USB_SETADDRESS_DEVEN|LPC214X_EP0_OUT);
+ lpc214x_usbcmd(CMD_USB_DEV_SETADDRESS, CMD_USB_SETADDRESS_DEVEN|LPC214X_EP0_OUT);
+
+ /* Reset/Re-initialize the USB hardware */
+
+ lpc214x_usbreset(priv);
+
+ /* Init Device state structure */
+
+ priv->devstatus = lpc214x_usbcmd(CMD_USB_DEV_GETSTATUS, 0);
+ return;
+
+errout:
+ up_usbuninitialize();
+}
+
+/*******************************************************************************
+ * Name: up_usbunintialize
+ *******************************************************************************/
+
+int up_usbunintialize(void)
+{
+ struct lpc214x_usbdev_s *priv = &g_usbdev;
+ uint32 reg;
+ irqstate_t flags;
+
+ usbtrace(TRACE_DEVUNINIT, 0);
+ if (priv->driver)
+ {
+ usbtrace(TRACE_ERROR(LPC214X_TRACEERR_DRIVERREGISTERED), 0);
+ usbdev_unregister(priv->driver);
+ }
+
+ /* Disconnect device */
+
+ flags = irqsave();
+ lpc214x_pullup(&priv->usbdev, FALSE);
+ priv->usbdev.speed = USB_SPEED_UNKNOWN;
+ lpc214x_usbcmd(CMD_USB_DEV_CONFIG, 0);
+
+ /* Disable and detach IRQs */
+
+ up_disable_irq(LPC214X_USB_IRQ);
+ irq_detach(LPC214X_USB_IRQ);
+
+ /* Turn off USB power and clocking */
+
+ reg = getreg32(LPC214X_PCON_PCONP);
+ reg &= ~LPC214X_PCONP_PCUSB;
+ putreg32(reg, LPC214X_PCON_PCONP);
+ irqrestore(flags);
+ return OK;
+}
+
+/*******************************************************************************
+ * Name: usbdev_register
+ *
+ * Description:
+ * Register a USB device class driver. The class driver's bind() method will be
+ * called to bind it to a USB device driver.
+ *
+ *******************************************************************************/
+
+int usbdev_register(struct usbdevclass_driver_s *driver)
+{
+ int ret;
+
+ usbtrace(TRACE_DEVREGISTER, 0);
+#ifdef CONFIG_DEBUG
+ if (!driver || !driver->ops.bind || !driver->ops.unbind ||
+ !driver->ops.disconnect || !driver->ops.setup)
+ {
+ usbtrace(TRACE_ERROR(LPC214X_TRACEERR_INVALIDPARMS), 0);
+ return -EINVAL;
+ }
+
+ if (g_usbdev.driver)
+ {
+ usbtrace(TRACE_ERROR(LPC214X_TRACEERR_DRIVER), 0);
+ return -EBUSY;
+ }
+#endif
+
+ /* First hook up the driver */
+
+ g_usbdev.driver = driver;
+
+ /* Then bind the class driver */
+
+ ret = CLASS_BIND(driver, &g_usbdev.usbdev);
+ if (ret)
+ {
+ usbtrace(TRACE_ERROR(LPC214X_TRACEERR_BINDFAILED), (uint16)-ret);
+ g_usbdev.driver = NULL;
+ }
+ return ret;
+}
+
+/*******************************************************************************
+ * Name: usbdev_unregister
+ *
+ * Description:
+ * Un-register usbdev class driver.If the USB device is connected to a USB host,
+ * it will first disconnect(). The driver is also requested to unbind() and clean
+ * up any device state, before this procedure finally returns.
+ *
+ *******************************************************************************/
+
+int usbdev_unregister(struct usbdevclass_driver_s *driver)
+{
+ usbtrace(TRACE_DEVUNREGISTER, 0);
+
+#ifdef CONFIG_DEBUG
+ if (driver != g_usbdev.driver)
+ {
+ usbtrace(TRACE_ERROR(LPC214X_TRACEERR_INVALIDPARMS), 0);
+ return -EINVAL;
+ }
+#endif
+
+ /* Unbind the class driver */
+
+ CLASS_UNBIND(driver, &g_usbdev.usbdev);
+
+ /* Unhook the driver */
+
+ g_usbdev.driver = NULL;
+ return OK;
+}
diff --git a/include/nuttx/kmalloc.h b/include/nuttx/kmalloc.h
index 913bea8383ce35e74a94c78a2b303763002dd6c1..d46aca73c55998716cf952d759d772d6ced03256 100644
--- a/include/nuttx/kmalloc.h
+++ b/include/nuttx/kmalloc.h
@@ -37,7 +37,7 @@
#define __KMALLOC_H
/****************************************************************************
- * Included Functions
+ * Included Files
****************************************************************************/
#include <nuttx/config.h>
diff --git a/include/nuttx/usbdev_trace.h b/include/nuttx/usbdev_trace.h
new file mode 100644
index 0000000000000000000000000000000000000000..23922c45134c187b0577adb1cfa6cce61cbfaf5d
--- /dev/null
+++ b/include/nuttx/usbdev_trace.h
@@ -0,0 +1,183 @@
+/****************************************************************************
+ * include/nuttx/usbdev_trace.h
+ *
+ * Copyright (C) 2008 Gregory Nutt. All rights reserved.
+ * Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ * used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __INCLUDE_NUTTX_USBDEV_TRACE_H
+#define __INCLUDE_NUTTX_USBDEV_TRACE_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <sys/types.h>
+
+/****************************************************************************
+ * Preprocessor definitions
+ ****************************************************************************/
+
+#define TRACE_EVENT(id,num) ((uint16)(id)|(num))
+#define TRACE_CLASS(event) ((event)&0xff00)
+#define TRACE_INSTANCE(event) ((event)0x00ff)
+
+/* Initialization events */
+
+#define TRACE_INIT (0x0000)
+#define TRACE_DEVINIT TRACE_EVENT(TRACE_INIT, 0x0001)
+#define TRACE_DEVUNINIT TRACE_EVENT(TRACE_INIT, 0x0002)
+#define TRACE_DEVREGISTER TRACE_EVENT(TRACE_INIT, 0x0003)
+#define TRACE_DEVUNREGISTER TRACE_EVENT(TRACE_INIT, 0x0004)
+
+/* API calls (see usbdev.h) */
+
+#define TRACE_EP (0x0100)
+#define TRACE_EPCONFIGURE TRACE_EVENT(TRACE_EP, 0x0001)
+#define TRACE_EPDISABLE TRACE_EVENT(TRACE_EP, 0x0002)
+#define TRACE_EPALLOCREQ TRACE_EVENT(TRACE_EP, 0x0003)
+#define TRACE_EPFREEREQ TRACE_EVENT(TRACE_EP, 0x0004)
+#define TRACE_EPALLOCBUFFER TRACE_EVENT(TRACE_EP, 0x0005)
+#define TRACE_EPFREEBUFFER TRACE_EVENT(TRACE_EP, 0x0006)
+#define TRACE_EPSUBMIT TRACE_EVENT(TRACE_EP, 0x0007)
+#define TRACE_EPCANCEL TRACE_EVENT(TRACE_EP, 0x0008)
+#define TRACE_EPSTALL TRACE_EVENT(TRACE_EP, 0x0009)
+#define TRACE_EPRESUME TRACE_EVENT(TRACE_EP, 0x000a)
+
+#define TRACE_DEV (0x0200)
+#define TRACE_DEVALLOCEP TRACE_EVENT(TRACE_DEV, 0x0001)
+#define TRACE_DEVFREEEP TRACE_EVENT(TRACE_DEV, 0x0002)
+#define TRACE_DEVGETFRAME TRACE_EVENT(TRACE_DEV, 0x0003)
+#define TRACE_DEVWAKEUP TRACE_EVENT(TRACE_DEV, 0x0004)
+#define TRACE_DEVSELFPOWERED TRACE_EVENT(TRACE_DEV, 0x0005)
+#define TRACE_DEVPULLUP TRACE_EVENT(TRACE_DEV, 0x0006)
+
+#define TRACE_CLASS (0x0300)
+#define TRACE_CLASSBIN TRACE_EVENT(TRACE_CLASS, 0x0001)
+#define TRACE_CLASSUNBIND TRACE_EVENT(TRACE_CLASS, 0x0001)
+#define TRACE_CLASSDISCONNECT TRACE_EVENT(TRACE_CLASS, 0x0001)
+#define TRACE_CLASSSETUP TRACE_EVENT(TRACE_CLASS, 0x0001)
+#define TRACE_CLASSSUSPEND TRACE_EVENT(TRACE_CLASS, 0x0001)
+#define TRACE_CLASSRESUME TRACE_EVENT(TRACE_CLASS, 0x0001)
+
+/* Interrupt events -- id is hardware specific */
+
+#define TRACE_INTENTRY(id) TRACE_EVENT(0x0400, id)
+#define TRACE_INTDECODE(id) TRACE_EVENT(0x0500, id)
+#define TRACE_INTEXIT(id) TRACE_EVENT(0x0600, id)
+
+/* Data Transfer */
+
+#define TRACE_READ(ep) TRACE_EVENT(0x0700, ep)
+#define TRACE_WRITE(ep) TRACE_EVENT(0x0800, ep)
+#define TRACE_COMPLETE(ep) TRACE_EVENT(0x0900, ep)
+
+/* Error events -- id is specific to the driver */
+
+#define TRACE_ERROR(id) TRACE_EVENT(0x0700, id)
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/* The reported trace information */
+
+struct usbtrace_s
+{
+ uint16 event;
+ uint16 value;
+};
+
+/* Enumeration callback function signature */
+
+typedef int (*trace_callback_t)(struct usbtrace_s *trace, void *arg);
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#undef EXTERN
+#if defined(__cplusplus)
+# define EXTERN extern "C"
+extern "C" {
+#else
+# define EXTERN extern
+#endif
+
+/*******************************************************************************
+ * Name: usbtrace_enable
+ *
+ * Description:
+ * Enable/disable tracing
+ *
+ *******************************************************************************/
+
+#ifdef CONFIG_USBDEV_TRACE
+EXTERN void usbtrace_enable(boolen enable);
+#else
+# define usbtrace_enable(enable)
+#endif
+
+/*******************************************************************************
+ * Name: usbtrace
+ *
+ * Description:
+ * Record a USB event (tracing must be enabled)
+ *
+ *******************************************************************************/
+
+#ifdef CONFIG_USBDEV_TRACE
+EXTERN void usbtrace(uint16 event, uint16 value);
+#else
+# define usbtrace(event)
+#endif
+
+/*******************************************************************************
+ * Name: usbtrace_enumerate
+ *
+ * Description:
+ * Enumerate all buffer trace data (tracing must be disabled)
+ *
+ *******************************************************************************/
+
+#ifdef CONFIG_USBDEV_TRACE
+EXTERN int usbtrace_enumerate(tracecallback_t *callback, void *arg);
+#else
+# define usbtrace_enumerate(event)
+#endif
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __INCLUDE_NUTTX_USBDEV_TRACE_H */