[U-Boot] [PATCH 1/3] Integrate USB gadget layer and USB CDC driver layer
Remy Bohmer
linux at bohmer.net
Thu Aug 12 19:36:51 CEST 2010
Derived from Linux kernel 2.6.27
Signed-off-by: Thomas Smits <ts.smits at gmail.com>
Signed-off-by: Remy Bohmer <linux at bohmer.net>
---
drivers/usb/gadget/Makefile | 3 +
drivers/usb/gadget/config.c | 119 +++
drivers/usb/gadget/epautoconf.c | 306 ++++++
drivers/usb/gadget/ether.c | 1947 +++++++++++++++++++++++++++++++++++++
drivers/usb/gadget/gadget_chips.h | 219 +++++
drivers/usb/gadget/usbstring.c | 134 +++
include/linux/usb/cdc.h | 224 +++++
include/linux/usb/ch9.h | 587 +++++++++++
include/linux/usb/gadget.h | 871 +++++++++++++++++
include/net.h | 17 +-
10 files changed, 4425 insertions(+), 2 deletions(-)
create mode 100644 drivers/usb/gadget/config.c
create mode 100644 drivers/usb/gadget/epautoconf.c
create mode 100644 drivers/usb/gadget/ether.c
create mode 100644 drivers/usb/gadget/gadget_chips.h
create mode 100644 drivers/usb/gadget/usbstring.c
create mode 100644 include/linux/usb/cdc.h
create mode 100644 include/linux/usb/ch9.h
create mode 100644 include/linux/usb/gadget.h
diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile
index 1d7362d..9b1b55b 100644
--- a/drivers/usb/gadget/Makefile
+++ b/drivers/usb/gadget/Makefile
@@ -25,6 +25,7 @@ include $(TOPDIR)/config.mk
LIB := $(obj)libusb_gadget.a
+# Devices not related to the new gadget layer depend on CONFIG_USB_DEVICE
ifdef CONFIG_USB_DEVICE
COBJS-y += core.o
COBJS-y += ep0.o
@@ -34,6 +35,8 @@ COBJS-$(CONFIG_MPC885_FAMILY) += mpc8xx_udc.o
COBJS-$(CONFIG_PXA27X) += pxa27x_udc.o
COBJS-$(CONFIG_SPEARUDC) += spr_udc.o
endif
+# new USB gadget layer dependencies
+COBJS-$(CONFIG_USB_ETHER) += ether.o epautoconf.o config.o usbstring.o
COBJS := $(COBJS-y)
SRCS := $(COBJS:.o=.c)
diff --git a/drivers/usb/gadget/config.c b/drivers/usb/gadget/config.c
new file mode 100644
index 0000000..84c90f0
--- /dev/null
+++ b/drivers/usb/gadget/config.c
@@ -0,0 +1,119 @@
+/*
+ * usb/gadget/config.c -- simplify building config descriptors
+ *
+ * Copyright (C) 2003 David Brownell
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Ported to U-boot by: Thomas Smits <ts.smits at gmail.com> and
+ * Remy Bohmer <linux at bohmer.net>
+ */
+
+#include <common.h>
+#include <asm/errno.h>
+#include <linux/list.h>
+#include <linux/string.h>
+
+#include <linux/usb/ch9.h>
+#include <linux/usb/gadget.h>
+
+
+/**
+ * usb_descriptor_fillbuf - fill buffer with descriptors
+ * @buf: Buffer to be filled
+ * @buflen: Size of buf
+ * @src: Array of descriptor pointers, terminated by null pointer.
+ *
+ * Copies descriptors into the buffer, returning the length or a
+ * negative error code if they can't all be copied. Useful when
+ * assembling descriptors for an associated set of interfaces used
+ * as part of configuring a composite device; or in other cases where
+ * sets of descriptors need to be marshaled.
+ */
+int
+usb_descriptor_fillbuf(void *buf, unsigned buflen,
+ const struct usb_descriptor_header **src)
+{
+ u8 *dest = buf;
+
+ if (!src)
+ return -EINVAL;
+
+ /* fill buffer from src[] until null descriptor ptr */
+ for (; NULL != *src; src++) {
+ unsigned len = (*src)->bLength;
+
+ if (len > buflen)
+ return -EINVAL;
+ memcpy(dest, *src, len);
+ buflen -= len;
+ dest += len;
+ }
+ return dest - (u8 *)buf;
+}
+
+
+/**
+ * usb_gadget_config_buf - builts a complete configuration descriptor
+ * @config: Header for the descriptor, including characteristics such
+ * as power requirements and number of interfaces.
+ * @desc: Null-terminated vector of pointers to the descriptors (interface,
+ * endpoint, etc) defining all functions in this device configuration.
+ * @buf: Buffer for the resulting configuration descriptor.
+ * @length: Length of buffer. If this is not big enough to hold the
+ * entire configuration descriptor, an error code will be returned.
+ *
+ * This copies descriptors into the response buffer, building a descriptor
+ * for that configuration. It returns the buffer length or a negative
+ * status code. The config.wTotalLength field is set to match the length
+ * of the result, but other descriptor fields (including power usage and
+ * interface count) must be set by the caller.
+ *
+ * Gadget drivers could use this when constructing a config descriptor
+ * in response to USB_REQ_GET_DESCRIPTOR. They will need to patch the
+ * resulting bDescriptorType value if USB_DT_OTHER_SPEED_CONFIG is needed.
+ */
+int usb_gadget_config_buf(
+ const struct usb_config_descriptor *config,
+ void *buf,
+ unsigned length,
+ const struct usb_descriptor_header **desc
+)
+{
+ struct usb_config_descriptor *cp = buf;
+ int len;
+
+ /* config descriptor first */
+ if (length < USB_DT_CONFIG_SIZE || !desc)
+ return -EINVAL;
+ *cp = *config;
+
+ /* then interface/endpoint/class/vendor/... */
+ len = usb_descriptor_fillbuf(USB_DT_CONFIG_SIZE + (u8*)buf,
+ length - USB_DT_CONFIG_SIZE, desc);
+ if (len < 0)
+ return len;
+ len += USB_DT_CONFIG_SIZE;
+ if (len > 0xffff)
+ return -EINVAL;
+
+ /* patch up the config descriptor */
+ cp->bLength = USB_DT_CONFIG_SIZE;
+ cp->bDescriptorType = USB_DT_CONFIG;
+ cp->wTotalLength = cpu_to_le16(len);
+ cp->bmAttributes |= USB_CONFIG_ATT_ONE;
+ return len;
+}
+
diff --git a/drivers/usb/gadget/epautoconf.c b/drivers/usb/gadget/epautoconf.c
new file mode 100644
index 0000000..c7fad39
--- /dev/null
+++ b/drivers/usb/gadget/epautoconf.c
@@ -0,0 +1,306 @@
+/*
+ * epautoconf.c -- endpoint autoconfiguration for usb gadget drivers
+ *
+ * Copyright (C) 2004 David Brownell
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Ported to U-boot by: Thomas Smits <ts.smits at gmail.com> and
+ * Remy Bohmer <linux at bohmer.net>
+ */
+
+#include <common.h>
+#include <linux/usb/ch9.h>
+#include <asm/errno.h>
+#include <linux/usb/gadget.h>
+#include "gadget_chips.h"
+
+#define isdigit(c) ('0' <= (c) && (c) <= '9')
+
+/* we must assign addresses for configurable endpoints (like net2280) */
+static unsigned epnum;
+
+// #define MANY_ENDPOINTS
+#ifdef MANY_ENDPOINTS
+/* more than 15 configurable endpoints */
+static unsigned in_epnum;
+#endif
+
+
+/*
+ * This should work with endpoints from controller drivers sharing the
+ * same endpoint naming convention. By example:
+ *
+ * - ep1, ep2, ... address is fixed, not direction or type
+ * - ep1in, ep2out, ... address and direction are fixed, not type
+ * - ep1-bulk, ep2-bulk, ... address and type are fixed, not direction
+ * - ep1in-bulk, ep2out-iso, ... all three are fixed
+ * - ep-* ... no functionality restrictions
+ *
+ * Type suffixes are "-bulk", "-iso", or "-int". Numbers are decimal.
+ * Less common restrictions are implied by gadget_is_*().
+ *
+ * NOTE: each endpoint is unidirectional, as specified by its USB
+ * descriptor; and isn't specific to a configuration or altsetting.
+ */
+static int
+ep_matches (
+ struct usb_gadget *gadget,
+ struct usb_ep *ep,
+ struct usb_endpoint_descriptor *desc
+)
+{
+ u8 type;
+ const char *tmp;
+ u16 max;
+
+ /* endpoint already claimed? */
+ if (NULL != ep->driver_data)
+ return 0;
+
+ /* only support ep0 for portable CONTROL traffic */
+ type = desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK;
+ if (USB_ENDPOINT_XFER_CONTROL == type)
+ return 0;
+
+ /* some other naming convention */
+ if ('e' != ep->name[0])
+ return 0;
+
+ /* type-restriction: "-iso", "-bulk", or "-int".
+ * direction-restriction: "in", "out".
+ */
+ if ('-' != ep->name[2]) {
+ tmp = strrchr (ep->name, '-');
+ if (tmp) {
+ switch (type) {
+ case USB_ENDPOINT_XFER_INT:
+ /* bulk endpoints handle interrupt transfers,
+ * except the toggle-quirky iso-synch kind
+ */
+ if ('s' == tmp[2]) // == "-iso"
+ return 0;
+ /* for now, avoid PXA "interrupt-in";
+ * it's documented as never using DATA1.
+ */
+ if (gadget_is_pxa (gadget)
+ && 'i' == tmp [1])
+ return 0;
+ break;
+ case USB_ENDPOINT_XFER_BULK:
+ if ('b' != tmp[1]) // != "-bulk"
+ return 0;
+ break;
+ case USB_ENDPOINT_XFER_ISOC:
+ if ('s' != tmp[2]) // != "-iso"
+ return 0;
+ }
+ } else {
+ tmp = ep->name + strlen (ep->name);
+ }
+
+ /* direction-restriction: "..in-..", "out-.." */
+ tmp--;
+ if (!isdigit (*tmp)) {
+ if (desc->bEndpointAddress & USB_DIR_IN) {
+ if ('n' != *tmp)
+ return 0;
+ } else {
+ if ('t' != *tmp)
+ return 0;
+ }
+ }
+ }
+
+ /* endpoint maxpacket size is an input parameter, except for bulk
+ * where it's an output parameter representing the full speed limit.
+ * the usb spec fixes high speed bulk maxpacket at 512 bytes.
+ */
+ max = 0x7ff & le16_to_cpu(desc->wMaxPacketSize);
+ switch (type) {
+ case USB_ENDPOINT_XFER_INT:
+ /* INT: limit 64 bytes full speed, 1024 high speed */
+ if (!gadget->is_dualspeed && max > 64)
+ return 0;
+ /* FALLTHROUGH */
+
+ case USB_ENDPOINT_XFER_ISOC:
+ /* ISO: limit 1023 bytes full speed, 1024 high speed */
+ if (ep->maxpacket < max)
+ return 0;
+ if (!gadget->is_dualspeed && max > 1023)
+ return 0;
+
+ /* BOTH: "high bandwidth" works only at high speed */
+ if ((desc->wMaxPacketSize & __constant_cpu_to_le16(3<<11))) {
+ if (!gadget->is_dualspeed)
+ return 0;
+ /* configure your hardware with enough buffering!! */
+ }
+ break;
+ }
+
+ /* MATCH!! */
+
+ /* report address */
+ if (isdigit (ep->name [2])) {
+ u8 num = simple_strtol (&ep->name [2], NULL, 10);
+ desc->bEndpointAddress |= num;
+#ifdef MANY_ENDPOINTS
+ } else if (desc->bEndpointAddress & USB_DIR_IN) {
+ if (++in_epnum > 15)
+ return 0;
+ desc->bEndpointAddress = USB_DIR_IN | in_epnum;
+#endif
+ } else {
+ if (++epnum > 15)
+ return 0;
+ desc->bEndpointAddress |= epnum;
+ }
+
+ /* report (variable) full speed bulk maxpacket */
+ if (USB_ENDPOINT_XFER_BULK == type) {
+ int size = ep->maxpacket;
+
+ /* min() doesn't work on bitfields with gcc-3.5 */
+ if (size > 64)
+ size = 64;
+ desc->wMaxPacketSize = cpu_to_le16(size);
+ }
+ return 1;
+}
+
+static struct usb_ep *
+find_ep (struct usb_gadget *gadget, const char *name)
+{
+ struct usb_ep *ep;
+
+ list_for_each_entry (ep, &gadget->ep_list, ep_list) {
+ if (0 == strcmp (ep->name, name))
+ return ep;
+ }
+ return NULL;
+}
+
+/**
+ * usb_ep_autoconfig - choose an endpoint matching the descriptor
+ * @gadget: The device to which the endpoint must belong.
+ * @desc: Endpoint descriptor, with endpoint direction and transfer mode
+ * initialized. For periodic transfers, the maximum packet
+ * size must also be initialized. This is modified on success.
+ *
+ * By choosing an endpoint to use with the specified descriptor, this
+ * routine simplifies writing gadget drivers that work with multiple
+ * USB device controllers. The endpoint would be passed later to
+ * usb_ep_enable(), along with some descriptor.
+ *
+ * That second descriptor won't always be the same as the first one.
+ * For example, isochronous endpoints can be autoconfigured for high
+ * bandwidth, and then used in several lower bandwidth altsettings.
+ * Also, high and full speed descriptors will be different.
+ *
+ * Be sure to examine and test the results of autoconfiguration on your
+ * hardware. This code may not make the best choices about how to use the
+ * USB controller, and it can't know all the restrictions that may apply.
+ * Some combinations of driver and hardware won't be able to autoconfigure.
+ *
+ * On success, this returns an un-claimed usb_ep, and modifies the endpoint
+ * descriptor bEndpointAddress. For bulk endpoints, the wMaxPacket value
+ * is initialized as if the endpoint were used at full speed. To prevent
+ * the endpoint from being returned by a later autoconfig call, claim it
+ * by assigning ep->driver_data to some non-null value.
+ *
+ * On failure, this returns a null endpoint descriptor.
+ */
+struct usb_ep * usb_ep_autoconfig (
+ struct usb_gadget *gadget,
+ struct usb_endpoint_descriptor *desc
+)
+{
+ struct usb_ep *ep;
+ u8 type;
+
+ type = desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK;
+
+ /* First, apply chip-specific "best usage" knowledge.
+ * This might make a good usb_gadget_ops hook ...
+ */
+ if (gadget_is_net2280 (gadget) && type == USB_ENDPOINT_XFER_INT) {
+ /* ep-e, ep-f are PIO with only 64 byte fifos */
+ ep = find_ep (gadget, "ep-e");
+ if (ep && ep_matches (gadget, ep, desc))
+ return ep;
+ ep = find_ep (gadget, "ep-f");
+ if (ep && ep_matches (gadget, ep, desc))
+ return ep;
+
+ } else if (gadget_is_goku (gadget)) {
+ if (USB_ENDPOINT_XFER_INT == type) {
+ /* single buffering is enough */
+ ep = find_ep (gadget, "ep3-bulk");
+ if (ep && ep_matches (gadget, ep, desc))
+ return ep;
+ } else if (USB_ENDPOINT_XFER_BULK == type
+ && (USB_DIR_IN & desc->bEndpointAddress)) {
+ /* DMA may be available */
+ ep = find_ep (gadget, "ep2-bulk");
+ if (ep && ep_matches (gadget, ep, desc))
+ return ep;
+ }
+
+ } else if (gadget_is_sh (gadget) && USB_ENDPOINT_XFER_INT == type) {
+ /* single buffering is enough; maybe 8 byte fifo is too */
+ ep = find_ep (gadget, "ep3in-bulk");
+ if (ep && ep_matches (gadget, ep, desc))
+ return ep;
+
+ } else if (gadget_is_mq11xx (gadget) && USB_ENDPOINT_XFER_INT == type) {
+ ep = find_ep (gadget, "ep1-bulk");
+ if (ep && ep_matches (gadget, ep, desc))
+ return ep;
+ }
+
+ /* Second, look at endpoints until an unclaimed one looks usable */
+ list_for_each_entry (ep, &gadget->ep_list, ep_list) {
+ if (ep_matches (gadget, ep, desc))
+ return ep;
+ }
+
+ /* Fail */
+ return NULL;
+}
+
+/**
+ * usb_ep_autoconfig_reset - reset endpoint autoconfig state
+ * @gadget: device for which autoconfig state will be reset
+ *
+ * Use this for devices where one configuration may need to assign
+ * endpoint resources very differently from the next one. It clears
+ * state such as ep->driver_data and the record of assigned endpoints
+ * used by usb_ep_autoconfig().
+ */
+void usb_ep_autoconfig_reset (struct usb_gadget *gadget)
+{
+ struct usb_ep *ep;
+
+ list_for_each_entry (ep, &gadget->ep_list, ep_list) {
+ ep->driver_data = NULL;
+ }
+#ifdef MANY_ENDPOINTS
+ in_epnum = 0;
+#endif
+ epnum = 0;
+}
+
diff --git a/drivers/usb/gadget/ether.c b/drivers/usb/gadget/ether.c
new file mode 100644
index 0000000..3d871fa
--- /dev/null
+++ b/drivers/usb/gadget/ether.c
@@ -0,0 +1,1947 @@
+/*
+ * ether.c -- Ethernet gadget driver, with CDC and non-CDC options
+ *
+ * Copyright (C) 2003-2005,2008 David Brownell
+ * Copyright (C) 2003-2004 Robert Schwebel, Benedikt Spranger
+ * Copyright (C) 2008 Nokia Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/errno.h>
+#include <linux/usb/ch9.h>
+#include <linux/usb/cdc.h>
+#include <linux/usb/gadget.h>
+#include <net.h>
+#include <linux/ctype.h>
+
+#include "gadget_chips.h"
+
+#define USB_NET_NAME "usb0"
+#define dprintf(x, ...)
+#undef INFO
+#define INFO(x, s...) printf(s)
+#define dev_err(x, stuff...) printf(stuff)
+#define dev_dbg dev_err
+#define dev_warn dev_err
+#define DEBUG dev_err
+#define VDEBUG DEBUG
+#define atomic_read
+extern struct platform_data brd;
+#define spin_lock(x)
+#define spin_unlock(x)
+
+
+unsigned packet_received, packet_sent;
+
+#define DEV_CONFIG_CDC 1
+#define GFP_ATOMIC ((gfp_t) 0)
+#define GFP_KERNEL ((gfp_t) 0)
+
+/*
+ * Ethernet gadget driver -- with CDC and non-CDC options
+ * Builds on hardware support for a full duplex link.
+ *
+ * CDC Ethernet is the standard USB solution for sending Ethernet frames
+ * using USB. Real hardware tends to use the same framing protocol but look
+ * different for control features. This driver strongly prefers to use
+ * this USB-IF standard as its open-systems interoperability solution;
+ * most host side USB stacks (except from Microsoft) support it.
+ *
+ * This is sometimes called "CDC ECM" (Ethernet Control Model) to support
+ * TLA-soup. "CDC ACM" (Abstract Control Model) is for modems, and a new
+ * "CDC EEM" (Ethernet Emulation Model) is starting to spread.
+ *
+ * There's some hardware that can't talk CDC ECM. We make that hardware
+ * implement a "minimalist" vendor-agnostic CDC core: same framing, but
+ * link-level setup only requires activating the configuration. Only the
+ * endpoint descriptors, and product/vendor IDs, are relevant; no control
+ * operations are available. Linux supports it, but other host operating
+ * systems may not. (This is a subset of CDC Ethernet.)
+ *
+ * It turns out that if you add a few descriptors to that "CDC Subset",
+ * (Windows) host side drivers from MCCI can treat it as one submode of
+ * a proprietary scheme called "SAFE" ... without needing to know about
+ * specific product/vendor IDs. So we do that, making it easier to use
+ * those MS-Windows drivers. Those added descriptors make it resemble a
+ * CDC MDLM device, but they don't change device behavior at all. (See
+ * MCCI Engineering report 950198 "SAFE Networking Functions".)
+ *
+ * A third option is also in use. Rather than CDC Ethernet, or something
+ * simpler, Microsoft pushes their own approach: RNDIS. The published
+ * RNDIS specs are ambiguous and appear to be incomplete, and are also
+ * needlessly complex. They borrow more from CDC ACM than CDC ECM.
+ */
+#define ETH_ALEN 6 /* Octets in one ethernet addr */
+#define ETH_HLEN 14 /* Total octets in header. */
+#define ETH_ZLEN 60 /* Min. octets in frame sans FCS */
+#define ETH_DATA_LEN 1500 /* Max. octets in payload */
+#define ETH_FRAME_LEN PKTSIZE_ALIGN /* Max. octets in frame sans FCS */
+#define ETH_FCS_LEN 4 /* Octets in the FCS */
+
+#define DRIVER_DESC "Ethernet Gadget"
+/* Based on linux 2.6.27 version */
+#define DRIVER_VERSION "May Day 2005"
+
+static const char shortname [] = "ether";
+static const char driver_desc [] = DRIVER_DESC;
+
+#define RX_EXTRA 20 /* guard against rx overflows */
+
+/* CDC support the same host-chosen outgoing packet filters. */
+#define DEFAULT_FILTER (USB_CDC_PACKET_TYPE_BROADCAST \
+ |USB_CDC_PACKET_TYPE_ALL_MULTICAST \
+ |USB_CDC_PACKET_TYPE_PROMISCUOUS \
+ |USB_CDC_PACKET_TYPE_DIRECTED)
+
+#define USB_CONNECT_TIMEOUT (3 * CONFIG_SYS_HZ)
+
+/*-------------------------------------------------------------------------*/
+static struct eth_dev l_ethdev;
+static struct eth_device l_netdev;
+static struct usb_gadget_driver eth_driver;
+
+/*-------------------------------------------------------------------------*/
+
+/* "main" config is either CDC, or its simple subset */
+static inline int is_cdc(struct eth_dev *dev)
+{
+#if !defined(DEV_CONFIG_SUBSET)
+ return 1; /* only cdc possible */
+#elif !defined (DEV_CONFIG_CDC)
+ return 0; /* only subset possible */
+#else
+ return dev->cdc; /* depends on what hardware we found */
+#endif
+}
+
+#define subset_active(dev) (!is_cdc(dev))
+#define cdc_active(dev) ( is_cdc(dev))
+
+#define DEFAULT_QLEN 2 /* double buffering by default */
+
+/* peak bulk transfer bits-per-second */
+#define HS_BPS (13 * 512 * 8 * 1000 * 8)
+#define FS_BPS (19 * 64 * 1 * 1000 * 8)
+
+#ifdef CONFIG_USB_GADGET_DUALSPEED
+#define DEVSPEED USB_SPEED_HIGH
+
+/* for dual-speed hardware, use deeper queues at highspeed */
+#define qlen(gadget) \
+ (DEFAULT_QLEN*((gadget->speed == USB_SPEED_HIGH) ? qmult : 1))
+
+static inline int BITRATE(struct usb_gadget *g)
+{
+ return (g->speed == USB_SPEED_HIGH) ? HS_BPS : FS_BPS;
+}
+
+#else /* full speed (low speed doesn't do bulk) */
+
+#define qmult 1
+
+#define DEVSPEED USB_SPEED_FULL
+
+#define qlen(gadget) DEFAULT_QLEN
+
+static inline int BITRATE(struct usb_gadget *g)
+{
+ return FS_BPS;
+}
+#endif
+
+struct eth_dev {
+ struct usb_gadget *gadget;
+ struct usb_request *req; /* for control responses */
+ struct usb_request *stat_req; /* for cdc status */
+
+ u8 config;
+ struct usb_ep *in_ep, *out_ep, *status_ep;
+ const struct usb_endpoint_descriptor
+ *in, *out, *status;
+
+ struct usb_request *tx_req, *rx_req;
+
+ struct eth_device *net;
+ unsigned int tx_qlen;
+
+ unsigned zlp:1;
+ unsigned cdc:1;
+ unsigned suspended:1;
+ unsigned network_started:1;
+ u16 cdc_filter;
+ unsigned long todo;
+ int mtu;
+#define WORK_RX_MEMORY 0
+ u8 host_mac [ETH_ALEN];
+};
+
+/* This version autoconfigures as much as possible at run-time.
+ *
+ * It also ASSUMES a self-powered device, without remote wakeup,
+ * although remote wakeup support would make sense.
+ */
+
+/*-------------------------------------------------------------------------*/
+
+/* DO NOT REUSE THESE IDs with a protocol-incompatible driver!! Ever!!
+ * Instead: allocate your own, using normal USB-IF procedures.
+ */
+
+/* Thanks to NetChip Technologies for donating this product ID.
+ * It's for devices with only CDC Ethernet configurations.
+ */
+#define CDC_VENDOR_NUM 0x0525 /* NetChip */
+#define CDC_PRODUCT_NUM 0xa4a1 /* Linux-USB Ethernet Gadget */
+
+/* For hardware that can't talk CDC, we use the same vendor ID that
+ * ARM Linux has used for ethernet-over-usb, both with sa1100 and
+ * with pxa250. We're protocol-compatible, if the host-side drivers
+ * use the endpoint descriptors. bcdDevice (version) is nonzero, so
+ * drivers that need to hard-wire endpoint numbers have a hook.
+ *
+ * The protocol is a minimal subset of CDC Ether, which works on any bulk
+ * hardware that's not deeply broken ... even on hardware that can't talk
+ * RNDIS (like SA-1100, with no interrupt endpoint, or anything that
+ * doesn't handle control-OUT).
+ */
+#define SIMPLE_VENDOR_NUM 0x049f
+#define SIMPLE_PRODUCT_NUM 0x505a
+
+/* Some systems will want different product identifers published in the
+ * device descriptor, either numbers or strings or both. These string
+ * parameters are in UTF-8 (superset of ASCII's 7 bit characters).
+ */
+
+static ushort bcdDevice;
+#if defined(CONFIG_USBNET_MANUFACTURER)
+static char *iManufacturer = CONFIG_USBNET_MANUFACTURER;
+#else
+static char *iManufacturer = "U-boot";
+#endif
+static char *iProduct;
+static char *iSerialNumber;
+static char dev_addr[18];
+static char host_addr[18];
+
+/*-------------------------------------------------------------------------*/
+
+/* USB DRIVER HOOKUP (to the hardware driver, below us), mostly
+ * ep0 implementation: descriptors, config management, setup().
+ * also optional class-specific notification interrupt transfer.
+ */
+
+/*
+ * DESCRIPTORS ... most are static, but strings and (full) configuration
+ * descriptors are built on demand. For now we do either full CDC, or
+ * our simple subset.
+ */
+
+#define STRING_MANUFACTURER 1
+#define STRING_PRODUCT 2
+#define STRING_ETHADDR 3
+#define STRING_DATA 4
+#define STRING_CONTROL 5
+#define STRING_CDC 7
+#define STRING_SUBSET 8
+#define STRING_SERIALNUMBER 10
+
+/* holds our biggest descriptor */
+#define USB_BUFSIZ 256
+
+/*
+ * This device advertises one configuration, eth_config,
+ * on hardware supporting at least two configs.
+ *
+ * FIXME define some higher-powered configurations to make it easier
+ * to recharge batteries ...
+ */
+
+#define DEV_CONFIG_VALUE 1 /* cdc or subset */
+
+static struct usb_device_descriptor
+device_desc = {
+ .bLength = sizeof device_desc,
+ .bDescriptorType = USB_DT_DEVICE,
+
+ .bcdUSB = __constant_cpu_to_le16 (0x0200),
+
+ .bDeviceClass = USB_CLASS_COMM,
+ .bDeviceSubClass = 0,
+ .bDeviceProtocol = 0,
+
+ .idVendor = __constant_cpu_to_le16 (CDC_VENDOR_NUM),
+ .idProduct = __constant_cpu_to_le16 (CDC_PRODUCT_NUM),
+ .iManufacturer = STRING_MANUFACTURER,
+ .iProduct = STRING_PRODUCT,
+ .bNumConfigurations = 1,
+};
+
+static struct usb_otg_descriptor
+otg_descriptor = {
+ .bLength = sizeof otg_descriptor,
+ .bDescriptorType = USB_DT_OTG,
+
+ .bmAttributes = USB_OTG_SRP,
+};
+
+static struct usb_config_descriptor
+eth_config = {
+ .bLength = sizeof eth_config,
+ .bDescriptorType = USB_DT_CONFIG,
+
+ /* compute wTotalLength on the fly */
+ .bNumInterfaces = 2,
+ .bConfigurationValue = DEV_CONFIG_VALUE,
+ .iConfiguration = STRING_CDC,
+ .bmAttributes = USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER,
+ .bMaxPower = 1,
+};
+
+/*
+ * Compared to the simple CDC subset, the full CDC Ethernet model adds
+ * three class descriptors, two interface descriptors, optional status
+ * endpoint. Both have a "data" interface and two bulk endpoints.
+ * There are also differences in how control requests are handled.
+ */
+
+#ifdef DEV_CONFIG_CDC
+static struct usb_interface_descriptor
+control_intf = {
+ .bLength = sizeof control_intf,
+ .bDescriptorType = USB_DT_INTERFACE,
+
+ .bInterfaceNumber = 0,
+ /* status endpoint is optional; this may be patched later */
+ .bNumEndpoints = 1,
+ .bInterfaceClass = USB_CLASS_COMM,
+ .bInterfaceSubClass = USB_CDC_SUBCLASS_ETHERNET,
+ .bInterfaceProtocol = USB_CDC_PROTO_NONE,
+ .iInterface = STRING_CONTROL,
+};
+#endif
+
+static const struct usb_cdc_header_desc header_desc = {
+ .bLength = sizeof header_desc,
+ .bDescriptorType = USB_DT_CS_INTERFACE,
+ .bDescriptorSubType = USB_CDC_HEADER_TYPE,
+
+ .bcdCDC = __constant_cpu_to_le16 (0x0110),
+};
+
+#if defined(DEV_CONFIG_CDC)
+
+static const struct usb_cdc_union_desc union_desc = {
+ .bLength = sizeof union_desc,
+ .bDescriptorType = USB_DT_CS_INTERFACE,
+ .bDescriptorSubType = USB_CDC_UNION_TYPE,
+
+ .bMasterInterface0 = 0, /* index of control interface */
+ .bSlaveInterface0 = 1, /* index of DATA interface */
+};
+
+#endif /* CDC */
+
+#ifndef DEV_CONFIG_CDC
+
+/* "SAFE" loosely follows CDC WMC MDLM, violating the spec in various
+ * ways: data endpoints live in the control interface, there's no data
+ * interface, and it's not used to talk to a cell phone radio.
+ */
+
+static const struct usb_cdc_mdlm_desc mdlm_desc = {
+ .bLength = sizeof mdlm_desc,
+ .bDescriptorType = USB_DT_CS_INTERFACE,
+ .bDescriptorSubType = USB_CDC_MDLM_TYPE,
+
+ .bcdVersion = __constant_cpu_to_le16(0x0100),
+ .bGUID = {
+ 0x5d, 0x34, 0xcf, 0x66, 0x11, 0x18, 0x11, 0xd6,
+ 0xa2, 0x1a, 0x00, 0x01, 0x02, 0xca, 0x9a, 0x7f,
+ },
+};
+
+/* since "usb_cdc_mdlm_detail_desc" is a variable length structure, we
+ * can't really use its struct. All we do here is say that we're using
+ * the submode of "SAFE" which directly matches the CDC Subset.
+ */
+static const u8 mdlm_detail_desc[] = {
+ 6,
+ USB_DT_CS_INTERFACE,
+ USB_CDC_MDLM_DETAIL_TYPE,
+
+ 0, /* "SAFE" */
+ 0, /* network control capabilities (none) */
+ 0, /* network data capabilities ("raw" encapsulation) */
+};
+
+#endif
+
+
+static const struct usb_cdc_ether_desc ether_desc = {
+ .bLength = sizeof (ether_desc),
+ .bDescriptorType = USB_DT_CS_INTERFACE,
+ .bDescriptorSubType = USB_CDC_ETHERNET_TYPE,
+
+ /* this descriptor actually adds value, surprise! */
+ .iMACAddress = STRING_ETHADDR,
+ .bmEthernetStatistics = __constant_cpu_to_le32 (0), /* no statistics */
+ .wMaxSegmentSize = __constant_cpu_to_le16 (ETH_FRAME_LEN),
+ .wNumberMCFilters = __constant_cpu_to_le16 (0),
+ .bNumberPowerFilters = 0,
+};
+
+
+#if defined(DEV_CONFIG_CDC)
+
+/* include the status endpoint if we can, even where it's optional.
+ * use wMaxPacketSize big enough to fit CDC_NOTIFY_SPEED_CHANGE in one
+ * packet, to simplify cancellation; and a big transfer interval, to
+ * waste less bandwidth.
+ *
+ * some drivers (like Linux 2.4 cdc-ether!) "need" it to exist even
+ * if they ignore the connect/disconnect notifications that real aether
+ * can provide. more advanced cdc configurations might want to support
+ * encapsulated commands (vendor-specific, using control-OUT).
+ */
+
+#define LOG2_STATUS_INTERVAL_MSEC 5 /* 1 << 5 == 32 msec */
+#define STATUS_BYTECOUNT 16 /* 8 byte header + data */
+
+static struct usb_endpoint_descriptor
+fs_status_desc = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+
+ .bEndpointAddress = USB_DIR_IN,
+ .bmAttributes = USB_ENDPOINT_XFER_INT,
+ .wMaxPacketSize = __constant_cpu_to_le16 (STATUS_BYTECOUNT),
+ .bInterval = 1 << LOG2_STATUS_INTERVAL_MSEC,
+};
+#endif
+
+#ifdef DEV_CONFIG_CDC
+
+/* the default data interface has no endpoints ... */
+
+static const struct usb_interface_descriptor
+data_nop_intf = {
+ .bLength = sizeof data_nop_intf,
+ .bDescriptorType = USB_DT_INTERFACE,
+
+ .bInterfaceNumber = 1,
+ .bAlternateSetting = 0,
+ .bNumEndpoints = 0,
+ .bInterfaceClass = USB_CLASS_CDC_DATA,
+ .bInterfaceSubClass = 0,
+ .bInterfaceProtocol = 0,
+};
+
+/* ... but the "real" data interface has two bulk endpoints */
+
+static const struct usb_interface_descriptor
+data_intf = {
+ .bLength = sizeof data_intf,
+ .bDescriptorType = USB_DT_INTERFACE,
+
+ .bInterfaceNumber = 1,
+ .bAlternateSetting = 1,
+ .bNumEndpoints = 2,
+ .bInterfaceClass = USB_CLASS_CDC_DATA,
+ .bInterfaceSubClass = 0,
+ .bInterfaceProtocol = 0,
+ .iInterface = STRING_DATA,
+};
+
+#endif
+
+#ifdef DEV_CONFIG_SUBSET
+
+/*
+ * "Simple" CDC-subset option is a simple vendor-neutral model that most
+ * full speed controllers can handle: one interface, two bulk endpoints.
+ *
+ * To assist host side drivers, we fancy it up a bit, and add descriptors
+ * so some host side drivers will understand it as a "SAFE" variant.
+ */
+
+static const struct usb_interface_descriptor
+subset_data_intf = {
+ .bLength = sizeof subset_data_intf,
+ .bDescriptorType = USB_DT_INTERFACE,
+
+ .bInterfaceNumber = 0,
+ .bAlternateSetting = 0,
+ .bNumEndpoints = 2,
+ .bInterfaceClass = USB_CLASS_COMM,
+ .bInterfaceSubClass = USB_CDC_SUBCLASS_MDLM,
+ .bInterfaceProtocol = 0,
+ .iInterface = STRING_DATA,
+};
+
+#endif /* SUBSET */
+
+
+static struct usb_endpoint_descriptor
+fs_source_desc = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+
+ .bEndpointAddress = USB_DIR_IN,
+ .bmAttributes = USB_ENDPOINT_XFER_BULK,
+};
+
+static struct usb_endpoint_descriptor
+fs_sink_desc = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+
+ .bEndpointAddress = USB_DIR_OUT,
+ .bmAttributes = USB_ENDPOINT_XFER_BULK,
+};
+
+static const struct usb_descriptor_header *fs_eth_function [11] = {
+ (struct usb_descriptor_header *) &otg_descriptor,
+#ifdef DEV_CONFIG_CDC
+ /* "cdc" mode descriptors */
+ (struct usb_descriptor_header *) &control_intf,
+ (struct usb_descriptor_header *) &header_desc,
+ (struct usb_descriptor_header *) &union_desc,
+ (struct usb_descriptor_header *) ðer_desc,
+ /* NOTE: status endpoint may need to be removed */
+ (struct usb_descriptor_header *) &fs_status_desc,
+ /* data interface, with altsetting */
+ (struct usb_descriptor_header *) &data_nop_intf,
+ (struct usb_descriptor_header *) &data_intf,
+ (struct usb_descriptor_header *) &fs_source_desc,
+ (struct usb_descriptor_header *) &fs_sink_desc,
+ NULL,
+#endif /* DEV_CONFIG_CDC */
+};
+
+static inline void fs_subset_descriptors(void)
+{
+#ifdef DEV_CONFIG_SUBSET
+ /* behavior is "CDC Subset"; extra descriptors say "SAFE" */
+ fs_eth_function[1] = (struct usb_descriptor_header *) &subset_data_intf;
+ fs_eth_function[2] = (struct usb_descriptor_header *) &header_desc;
+ fs_eth_function[3] = (struct usb_descriptor_header *) &mdlm_desc;
+ fs_eth_function[4] = (struct usb_descriptor_header *) &mdlm_detail_desc;
+ fs_eth_function[5] = (struct usb_descriptor_header *) ðer_desc;
+ fs_eth_function[6] = (struct usb_descriptor_header *) &fs_source_desc;
+ fs_eth_function[7] = (struct usb_descriptor_header *) &fs_sink_desc;
+ fs_eth_function[8] = NULL;
+#else
+ fs_eth_function[1] = NULL;
+#endif
+}
+
+/*
+ * usb 2.0 devices need to expose both high speed and full speed
+ * descriptors, unless they only run at full speed.
+ */
+
+#if defined(DEV_CONFIG_CDC)
+static struct usb_endpoint_descriptor
+hs_status_desc = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+
+ .bmAttributes = USB_ENDPOINT_XFER_INT,
+ .wMaxPacketSize = __constant_cpu_to_le16 (STATUS_BYTECOUNT),
+ .bInterval = LOG2_STATUS_INTERVAL_MSEC + 4,
+};
+#endif /* DEV_CONFIG_CDC */
+
+static struct usb_endpoint_descriptor
+hs_source_desc = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+
+ .bmAttributes = USB_ENDPOINT_XFER_BULK,
+ .wMaxPacketSize = __constant_cpu_to_le16 (512),
+};
+
+static struct usb_endpoint_descriptor
+hs_sink_desc = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+
+ .bmAttributes = USB_ENDPOINT_XFER_BULK,
+ .wMaxPacketSize = __constant_cpu_to_le16 (512),
+};
+
+static struct usb_qualifier_descriptor
+dev_qualifier = {
+ .bLength = sizeof dev_qualifier,
+ .bDescriptorType = USB_DT_DEVICE_QUALIFIER,
+
+ .bcdUSB = __constant_cpu_to_le16 (0x0200),
+ .bDeviceClass = USB_CLASS_COMM,
+
+ .bNumConfigurations = 1,
+};
+
+static const struct usb_descriptor_header *hs_eth_function [11] = {
+ (struct usb_descriptor_header *) &otg_descriptor,
+#ifdef DEV_CONFIG_CDC
+ /* "cdc" mode descriptors */
+ (struct usb_descriptor_header *) &control_intf,
+ (struct usb_descriptor_header *) &header_desc,
+ (struct usb_descriptor_header *) &union_desc,
+ (struct usb_descriptor_header *) ðer_desc,
+ /* NOTE: status endpoint may need to be removed */
+ (struct usb_descriptor_header *) &hs_status_desc,
+ /* data interface, with altsetting */
+ (struct usb_descriptor_header *) &data_nop_intf,
+ (struct usb_descriptor_header *) &data_intf,
+ (struct usb_descriptor_header *) &hs_source_desc,
+ (struct usb_descriptor_header *) &hs_sink_desc,
+ NULL,
+#endif /* DEV_CONFIG_CDC */
+};
+
+static inline void hs_subset_descriptors(void)
+{
+#ifdef DEV_CONFIG_SUBSET
+ /* behavior is "CDC Subset"; extra descriptors say "SAFE" */
+ hs_eth_function[1] = (struct usb_descriptor_header *) &subset_data_intf;
+ hs_eth_function[2] = (struct usb_descriptor_header *) &header_desc;
+ hs_eth_function[3] = (struct usb_descriptor_header *) &mdlm_desc;
+ hs_eth_function[4] = (struct usb_descriptor_header *) &mdlm_detail_desc;
+ hs_eth_function[5] = (struct usb_descriptor_header *) ðer_desc;
+ hs_eth_function[6] = (struct usb_descriptor_header *) &hs_source_desc;
+ hs_eth_function[7] = (struct usb_descriptor_header *) &hs_sink_desc;
+ hs_eth_function[8] = NULL;
+#else
+ hs_eth_function[1] = NULL;
+#endif
+}
+
+/* maxpacket and other transfer characteristics vary by speed. */
+static inline struct usb_endpoint_descriptor *
+ep_desc(struct usb_gadget *g, struct usb_endpoint_descriptor *hs,
+ struct usb_endpoint_descriptor *fs)
+{
+ if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH)
+ return hs;
+ return fs;
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+/* descriptors that are built on-demand */
+
+static char manufacturer [50];
+static char product_desc [40] = DRIVER_DESC;
+static char serial_number [20];
+
+/* address that the host will use ... usually assigned at random */
+static char ethaddr [2 * ETH_ALEN + 1];
+
+/* static strings, in UTF-8 */
+static struct usb_string strings [] = {
+ { STRING_MANUFACTURER, manufacturer, },
+ { STRING_PRODUCT, product_desc, },
+ { STRING_SERIALNUMBER, serial_number, },
+ { STRING_DATA, "Ethernet Data", },
+ { STRING_ETHADDR, ethaddr, },
+#ifdef DEV_CONFIG_CDC
+ { STRING_CDC, "CDC Ethernet", },
+ { STRING_CONTROL, "CDC Communications Control", },
+#endif
+#ifdef DEV_CONFIG_SUBSET
+ { STRING_SUBSET, "CDC Ethernet Subset", },
+#endif
+ { } /* end of list */
+};
+
+static struct usb_gadget_strings stringtab = {
+ .language = 0x0409, /* en-us */
+ .strings = strings,
+};
+
+
+/*============================================================================*/
+static u8 control_req[USB_BUFSIZ];
+static u8 status_req[STATUS_BYTECOUNT];
+
+
+
+/**
+ * strlcpy - Copy a %NUL terminated string into a sized buffer
+ * @dest: Where to copy the string to
+ * @src: Where to copy the string from
+ * @size: size of destination buffer
+ *
+ * Compatible with *BSD: the result is always a valid
+ * NUL-terminated string that fits in the buffer (unless,
+ * of course, the buffer size is zero). It does not pad
+ * out the result like strncpy() does.
+ */
+size_t strlcpy(char *dest, const char *src, size_t size)
+{
+ size_t ret = strlen(src);
+
+ if (size) {
+ size_t len = (ret >= size) ? size - 1 : ret;
+ memcpy(dest, src, len);
+ dest[len] = '\0';
+ }
+ return ret;
+}
+
+
+/*============================================================================*/
+
+/*
+ * one config, two interfaces: control, data.
+ * complications: class descriptors, and an altsetting.
+ */
+static int
+config_buf(struct usb_gadget *g, u8 *buf, u8 type, unsigned index, int is_otg)
+{
+ int len;
+ const struct usb_config_descriptor *config;
+ const struct usb_descriptor_header **function;
+ int hs = 0;
+
+ if (gadget_is_dualspeed(g)) {
+ hs = (g->speed == USB_SPEED_HIGH);
+ if (type == USB_DT_OTHER_SPEED_CONFIG)
+ hs = !hs;
+ }
+#define which_fn(t) (hs ? hs_ ## t ## _function : fs_ ## t ## _function)
+
+ if (index >= device_desc.bNumConfigurations)
+ return -EINVAL;
+
+ config = ð_config;
+ function = which_fn (eth);
+
+ /* for now, don't advertise srp-only devices */
+ if (!is_otg)
+ function++;
+
+ len = usb_gadget_config_buf (config, buf, USB_BUFSIZ, function);
+ if (len < 0)
+ return len;
+ ((struct usb_config_descriptor *) buf)->bDescriptorType = type;
+ return len;
+}
+
+/*-------------------------------------------------------------------------*/
+
+static int alloc_requests (struct eth_dev *dev, unsigned n, gfp_t gfp_flags);
+
+static int
+set_ether_config (struct eth_dev *dev, gfp_t gfp_flags)
+{
+ int result = 0;
+ struct usb_gadget *gadget = dev->gadget;
+
+#if defined(DEV_CONFIG_CDC)
+ /* status endpoint used for (optionally) CDC */
+ if (!subset_active(dev) && dev->status_ep) {
+ dev->status = ep_desc (gadget, &hs_status_desc,
+ &fs_status_desc);
+ dev->status_ep->driver_data = dev;
+
+ result = usb_ep_enable (dev->status_ep, dev->status);
+ if (result != 0) {
+ printf ("enable %s --> %d\n",
+ dev->status_ep->name, result);
+ goto done;
+ }
+ }
+#endif
+
+ dev->in = ep_desc(gadget, &hs_source_desc, &fs_source_desc);
+ dev->in_ep->driver_data = dev;
+
+ dev->out = ep_desc(gadget, &hs_sink_desc, &fs_sink_desc);
+ dev->out_ep->driver_data = dev;
+
+ /* With CDC, the host isn't allowed to use these two data
+ * endpoints in the default altsetting for the interface.
+ * so we don't activate them yet. Reset from SET_INTERFACE.
+ */
+ if (!cdc_active(dev)) {
+ result = usb_ep_enable (dev->in_ep, dev->in);
+ if (result != 0) {
+ printf ("enable %s --> %d\n",
+ dev->in_ep->name, result);
+ goto done;
+ }
+
+ result = usb_ep_enable (dev->out_ep, dev->out);
+ if (result != 0) {
+ printf ("enable %s --> %d\n",
+ dev->out_ep->name, result);
+ goto done;
+ }
+ }
+
+done:
+ if (result == 0)
+ result = alloc_requests (dev, qlen (gadget), gfp_flags);
+
+ /* on error, disable any endpoints */
+ if (result < 0) {
+ if (!subset_active(dev))
+ (void) usb_ep_disable (dev->status_ep);
+ dev->status = NULL;
+ (void) usb_ep_disable (dev->in_ep);
+ (void) usb_ep_disable (dev->out_ep);
+ dev->in = NULL;
+ dev->out = NULL;
+ }
+
+ /* caller is responsible for cleanup on error */
+ return result;
+}
+
+
+static void eth_reset_config (struct eth_dev *dev)
+{
+ if (dev->config == 0)
+ return;
+
+ /* disable endpoints, forcing (synchronous) completion of
+ * pending i/o. then free the requests.
+ */
+
+ if (dev->in) {
+ usb_ep_disable (dev->in_ep);
+ if (dev->tx_req) {
+ usb_ep_free_request (dev->in_ep, dev->tx_req);
+ dev->tx_req=NULL;
+ }
+ }
+ if (dev->out) {
+ usb_ep_disable (dev->out_ep);
+ if (dev->rx_req) {
+ usb_ep_free_request (dev->in_ep, dev->rx_req);
+ dev->rx_req=NULL;
+ }
+ }
+ if (dev->status) {
+ usb_ep_disable (dev->status_ep);
+ }
+ dev->cdc_filter = 0;
+ dev->config = 0;
+}
+
+/* change our operational config. must agree with the code
+ * that returns config descriptors, and altsetting code.
+ */
+static int eth_set_config (struct eth_dev *dev, unsigned number, gfp_t gfp_flags)
+{
+ int result = 0;
+ struct usb_gadget *gadget = dev->gadget;
+
+ if (gadget_is_sa1100 (gadget)
+ && dev->config
+ && dev->tx_qlen != 0) {
+ /* tx fifo is full, but we can't clear it...*/
+ INFO (dev, "can't change configurations\n");
+ return -ESPIPE;
+ }
+ eth_reset_config (dev);
+
+ switch (number) {
+ case DEV_CONFIG_VALUE:
+ result = set_ether_config (dev, gfp_flags);
+ break;
+ default:
+ result = -EINVAL;
+ /* FALL THROUGH */
+ case 0:
+ break;
+ }
+
+ if (result) {
+ if (number)
+ eth_reset_config (dev);
+ usb_gadget_vbus_draw(dev->gadget,
+ gadget_is_otg(dev->gadget) ? 8 : 100);
+ } else {
+ char *speed;
+ unsigned power;
+
+ power = 2 * eth_config.bMaxPower;
+ usb_gadget_vbus_draw(dev->gadget, power);
+
+ switch (gadget->speed) {
+ case USB_SPEED_FULL: speed = "full"; break;
+#ifdef CONFIG_USB_GADGET_DUALSPEED
+ case USB_SPEED_HIGH: speed = "high"; break;
+#endif
+ default: speed = "?"; break;
+ }
+
+ dev->config = number;
+ INFO (dev, "%s speed config #%d: %d mA, %s, using %s\n",
+ speed, number, power, driver_desc,
+ (cdc_active(dev)? "CDC Ethernet"
+ : "CDC Ethernet Subset"));
+ }
+ return result;
+}
+
+/*-------------------------------------------------------------------------*/
+
+#ifdef DEV_CONFIG_CDC
+
+/* The interrupt endpoint is used in CDC networking models (Ethernet, ATM)
+ * only to notify the host about link status changes (which we support) or
+ * report completion of some encapsulated command. Since
+ * we want this CDC Ethernet code to be vendor-neutral, we don't use that
+ * command mechanism; and only one status request is ever queued.
+ */
+static void eth_status_complete (struct usb_ep *ep, struct usb_request *req)
+{
+ struct usb_cdc_notification *event = req->buf;
+ int value = req->status;
+ struct eth_dev *dev = ep->driver_data;
+
+ /* issue the second notification if host reads the first */
+ if (event->bNotificationType == USB_CDC_NOTIFY_NETWORK_CONNECTION
+ && value == 0) {
+ __le32 *data = req->buf + sizeof *event;
+
+ event->bmRequestType = 0xA1;
+ event->bNotificationType = USB_CDC_NOTIFY_SPEED_CHANGE;
+ event->wValue = __constant_cpu_to_le16 (0);
+ event->wIndex = __constant_cpu_to_le16 (1);
+ event->wLength = __constant_cpu_to_le16 (8);
+
+ /* SPEED_CHANGE data is up/down speeds in bits/sec */
+ data [0] = data [1] = cpu_to_le32 (BITRATE (dev->gadget));
+
+ req->length = STATUS_BYTECOUNT;
+ value = usb_ep_queue (ep, req, GFP_ATOMIC);
+ dprintf ("send SPEED_CHANGE --> %d\n", value);
+ if (value == 0)
+ return;
+ } else if (value != -ECONNRESET) {
+ dprintf("event %02x --> %d\n",
+ event->bNotificationType, value);
+ if (event->bNotificationType==
+ USB_CDC_NOTIFY_SPEED_CHANGE)
+ {
+ l_ethdev.network_started=1;
+ printf("USB network up!\n");
+ }
+ }
+ req->context = NULL;
+}
+
+static void issue_start_status (struct eth_dev *dev)
+{
+ struct usb_request *req = dev->stat_req;
+ struct usb_cdc_notification *event;
+ int value;
+
+ /* flush old status
+ *
+ * FIXME ugly idiom, maybe we'd be better with just
+ * a "cancel the whole queue" primitive since any
+ * unlink-one primitive has way too many error modes.
+ * here, we "know" toggle is already clear...
+ *
+ * FIXME iff req->context != null just dequeue it
+ */
+ usb_ep_disable (dev->status_ep);
+ usb_ep_enable (dev->status_ep, dev->status);
+
+ /* 3.8.1 says to issue first NETWORK_CONNECTION, then
+ * a SPEED_CHANGE. could be useful in some configs.
+ */
+ event = req->buf;
+ event->bmRequestType = 0xA1;
+ event->bNotificationType = USB_CDC_NOTIFY_NETWORK_CONNECTION;
+ event->wValue = __constant_cpu_to_le16 (1); /* connected */
+ event->wIndex = __constant_cpu_to_le16 (1);
+ event->wLength = 0;
+
+ req->length = sizeof *event;
+ req->complete = eth_status_complete;
+ req->context = dev;
+
+ value = usb_ep_queue (dev->status_ep, req, GFP_ATOMIC);
+ if (value < 0)
+ printf ("status buf queue --> %d\n", value);
+}
+
+#endif
+
+/*-------------------------------------------------------------------------*/
+
+static void eth_setup_complete (struct usb_ep *ep, struct usb_request *req)
+{
+ if (req->status || req->actual != req->length)
+ dprintf (/*(struct eth_dev *) ep->driver_data*/
+ "setup complete --> %d, %d/%d\n",
+ req->status, req->actual, req->length);
+}
+
+/*
+ * The setup() callback implements all the ep0 functionality that's not
+ * handled lower down. CDC has a number of less-common features:
+ *
+ * - two interfaces: control, and ethernet data
+ * - Ethernet data interface has two altsettings: default, and active
+ * - class-specific descriptors for the control interface
+ * - class-specific control requests
+ */
+static int
+eth_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
+{
+ struct eth_dev *dev = get_gadget_data (gadget);
+ struct usb_request *req = dev->req;
+ int value = -EOPNOTSUPP;
+ u16 wIndex = le16_to_cpu(ctrl->wIndex);
+ u16 wValue = le16_to_cpu(ctrl->wValue);
+ u16 wLength = le16_to_cpu(ctrl->wLength);
+
+ /* descriptors just go into the pre-allocated ep0 buffer,
+ * while config change events may enable network traffic.
+ */
+
+ dprintf("eth_setup:...\n");
+
+ req->complete = eth_setup_complete;
+ switch (ctrl->bRequest) {
+
+ case USB_REQ_GET_DESCRIPTOR:
+ if (ctrl->bRequestType != USB_DIR_IN)
+ break;
+ switch (wValue >> 8) {
+
+ case USB_DT_DEVICE:
+ value = min (wLength, (u16) sizeof device_desc);
+ memcpy (req->buf, &device_desc, value);
+ break;
+ case USB_DT_DEVICE_QUALIFIER:
+ if (!gadget_is_dualspeed(gadget))
+ break;
+ value = min (wLength, (u16) sizeof dev_qualifier);
+ memcpy (req->buf, &dev_qualifier, value);
+ break;
+
+ case USB_DT_OTHER_SPEED_CONFIG:
+ if (!gadget_is_dualspeed(gadget))
+ break;
+ /* FALLTHROUGH */
+ case USB_DT_CONFIG:
+ value = config_buf(gadget, req->buf,
+ wValue >> 8,
+ wValue & 0xff,
+ gadget_is_otg(gadget));
+ if (value >= 0)
+ value = min (wLength, (u16) value);
+ break;
+
+ case USB_DT_STRING:
+ value = usb_gadget_get_string (&stringtab,
+ wValue & 0xff, req->buf);
+
+ if (value >= 0)
+ value = min (wLength, (u16) value);
+
+ break;
+ }
+ break;
+
+ case USB_REQ_SET_CONFIGURATION:
+ if (ctrl->bRequestType != 0)
+ break;
+ if (gadget->a_hnp_support)
+ DEBUG (dev, "HNP available\n");
+ else if (gadget->a_alt_hnp_support)
+ DEBUG (dev, "HNP needs a different root port\n");
+ value = eth_set_config (dev, wValue, GFP_ATOMIC);
+ break;
+ case USB_REQ_GET_CONFIGURATION:
+ if (ctrl->bRequestType != USB_DIR_IN)
+ break;
+ *(u8 *)req->buf = dev->config;
+ value = min (wLength, (u16) 1);
+ break;
+
+ case USB_REQ_SET_INTERFACE:
+ if (ctrl->bRequestType != USB_RECIP_INTERFACE
+ || !dev->config
+ || wIndex > 1)
+ break;
+ if (!cdc_active(dev) && wIndex != 0)
+ break;
+
+ /* PXA hardware partially handles SET_INTERFACE;
+ * we need to kluge around that interference.
+ */
+ if (gadget_is_pxa (gadget)) {
+ value = eth_set_config (dev, DEV_CONFIG_VALUE,
+ GFP_ATOMIC);
+ goto done_set_intf;
+ }
+
+#ifdef DEV_CONFIG_CDC
+ switch (wIndex) {
+ case 0: /* control/master intf */
+ if (wValue != 0)
+ break;
+ if (dev->status) {
+ usb_ep_disable (dev->status_ep);
+ usb_ep_enable (dev->status_ep, dev->status);
+ }
+ value = 0;
+ break;
+ case 1: /* data intf */
+ if (wValue > 1)
+ break;
+ usb_ep_disable (dev->in_ep);
+ usb_ep_disable (dev->out_ep);
+
+ /* CDC requires the data transfers not be done from
+ * the default interface setting ... also, setting
+ * the non-default interface resets filters etc.
+ */
+ if (wValue == 1) {
+ if (!cdc_active (dev))
+ break;
+ usb_ep_enable (dev->in_ep, dev->in);
+ usb_ep_enable (dev->out_ep, dev->out);
+ dev->cdc_filter = DEFAULT_FILTER;
+ if (dev->status)
+ issue_start_status (dev);
+ }
+
+ value = 0;
+ break;
+ }
+#else
+ /* FIXME this is wrong, as is the assumption that
+ * all non-PXA hardware talks real CDC ...
+ */
+ dev_warn (&gadget->dev, "set_interface ignored!\n");
+#endif /* DEV_CONFIG_CDC */
+
+done_set_intf:
+ break;
+ case USB_REQ_GET_INTERFACE:
+ if (ctrl->bRequestType != (USB_DIR_IN|USB_RECIP_INTERFACE)
+ || !dev->config
+ || wIndex > 1)
+ break;
+ if (!(cdc_active(dev)) && wIndex != 0)
+ break;
+
+ /* for CDC, iff carrier is on, data interface is active. */
+ if (wIndex != 1)
+ *(u8 *)req->buf = 0;
+ else {
+ /* *(u8 *)req->buf = netif_carrier_ok (dev->net) ? 1 : 0; */
+ /* carrier always ok ...*/
+ *(u8 *)req->buf = 1 ;
+ }
+ value = min (wLength, (u16) 1);
+ break;
+
+#ifdef DEV_CONFIG_CDC
+ case USB_CDC_SET_ETHERNET_PACKET_FILTER:
+ /* see 6.2.30: no data, wIndex = interface,
+ * wValue = packet filter bitmap
+ */
+ if (ctrl->bRequestType != (USB_TYPE_CLASS|USB_RECIP_INTERFACE)
+ || !cdc_active(dev)
+ || wLength != 0
+ || wIndex > 1)
+ break;
+ printf ("packet filter %02x\n", wValue);
+ dev->cdc_filter = wValue;
+ value = 0;
+ break;
+
+ /* and potentially:
+ * case USB_CDC_SET_ETHERNET_MULTICAST_FILTERS:
+ * case USB_CDC_SET_ETHERNET_PM_PATTERN_FILTER:
+ * case USB_CDC_GET_ETHERNET_PM_PATTERN_FILTER:
+ * case USB_CDC_GET_ETHERNET_STATISTIC:
+ */
+
+#endif /* DEV_CONFIG_CDC */
+
+ default:
+ printf (
+ "unknown control req%02x.%02x v%04x i%04x l%d\n",
+ ctrl->bRequestType, ctrl->bRequest,
+ wValue, wIndex, wLength);
+ }
+
+ /* respond with data transfer before status phase? */
+ if (value >= 0) {
+ dprintf("respond with data transfer before status phase\n");
+ req->length = value;
+ req->zero = value < wLength
+ && (value % gadget->ep0->maxpacket) == 0;
+ value = usb_ep_queue (gadget->ep0, req, GFP_ATOMIC);
+ if (value < 0) {
+ DEBUG (dev, "ep_queue --> %d\n", value);
+ req->status = 0;
+ eth_setup_complete (gadget->ep0, req);
+ }
+ }
+
+ /* host either stalls (value < 0) or reports success */
+ return value;
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+static void rx_complete (struct usb_ep *ep, struct usb_request *req);
+
+static int rx_submit ( struct eth_dev *dev, struct usb_request *req, \
+ gfp_t gfp_flags)
+{
+ int retval = -ENOMEM;
+ size_t size;
+
+ /* Padding up to RX_EXTRA handles minor disagreements with host.
+ * Normally we use the USB "terminate on short read" convention;
+ * so allow up to (N*maxpacket), since that memory is normally
+ * already allocated. Some hardware doesn't deal well with short
+ * reads (e.g. DMA must be N*maxpacket), so for now don't trim a
+ * byte off the end (to force hardware errors on overflow).
+ */
+
+ dprintf("%s\n", __func__);
+
+ size = (ETHER_HDR_SIZE + dev->mtu + RX_EXTRA);
+ size += dev->out_ep->maxpacket - 1;
+ size -= size % dev->out_ep->maxpacket;
+
+
+ /* Some platforms perform better when IP packets are aligned,
+ * but on at least one, checksumming fails otherwise.
+ */
+
+ req->buf = (u8 *) NetRxPackets[0];
+ req->length = size;
+ req->complete = rx_complete;
+
+ retval = usb_ep_queue (dev->out_ep, req, gfp_flags);
+
+ if (retval) {
+ dprintf ("rx submit --> %d\n", retval);
+ }
+ return retval;
+}
+
+
+static void rx_complete (struct usb_ep *ep, struct usb_request *req)
+{
+ struct eth_dev *dev = ep->driver_data;
+
+ dprintf("%s\n", __func__);
+ dprintf("rx status %d\n", req->status);
+
+ packet_received=1;
+
+ if (req)
+ dev->rx_req=req;
+}
+
+
+static int alloc_requests (struct eth_dev *dev, unsigned n, gfp_t gfp_flags)
+{
+
+ dev->tx_req = usb_ep_alloc_request (dev->in_ep, 0);
+
+ if (!dev->tx_req)
+ goto fail;
+
+ dev->rx_req = usb_ep_alloc_request (dev->out_ep, 0);
+
+ if (!dev->rx_req)
+ goto fail;
+
+ return 0;
+
+fail:
+ DEBUG (dev, "can't alloc requests\n");
+ return -1;
+}
+
+
+static void tx_complete (struct usb_ep *ep, struct usb_request *req)
+{
+ dprintf("%s, status: %s\n", __func__,(req->status) ? "failed":"ok");
+ packet_sent=1;
+}
+
+static inline int eth_is_promisc (struct eth_dev *dev)
+{
+ /* no filters for the CDC subset; always promisc */
+ if (subset_active (dev))
+ return 1;
+ return dev->cdc_filter & USB_CDC_PACKET_TYPE_PROMISCUOUS;
+}
+
+#if 0
+static int eth_start_xmit (struct sk_buff *skb, struct net_device *net)
+{
+ struct eth_dev *dev = netdev_priv(net);
+ int length = skb->len;
+ int retval;
+ struct usb_request *req = NULL;
+ unsigned long flags;
+
+ /* apply outgoing CDC or RNDIS filters */
+ if (!eth_is_promisc (dev)) {
+ u8 *dest = skb->data;
+
+ if (is_multicast_ether_addr(dest)) {
+ u16 type;
+
+ /* ignores USB_CDC_PACKET_TYPE_MULTICAST and host
+ * SET_ETHERNET_MULTICAST_FILTERS requests
+ */
+ if (is_broadcast_ether_addr(dest))
+ type = USB_CDC_PACKET_TYPE_BROADCAST;
+ else
+ type = USB_CDC_PACKET_TYPE_ALL_MULTICAST;
+ if (!(dev->cdc_filter & type)) {
+ dev_kfree_skb_any (skb);
+ return 0;
+ }
+ }
+ /* ignores USB_CDC_PACKET_TYPE_DIRECTED */
+ }
+
+ spin_lock_irqsave(&dev->req_lock, flags);
+ /*
+ * this freelist can be empty if an interrupt triggered disconnect()
+ * and reconfigured the gadget (shutting down this queue) after the
+ * network stack decided to xmit but before we got the spinlock.
+ */
+ if (list_empty(&dev->tx_reqs)) {
+ spin_unlock_irqrestore(&dev->req_lock, flags);
+ return 1;
+ }
+
+ req = container_of (dev->tx_reqs.next, struct usb_request, list);
+ list_del (&req->list);
+
+ /* temporarily stop TX queue when the freelist empties */
+ if (list_empty (&dev->tx_reqs))
+ netif_stop_queue (net);
+ spin_unlock_irqrestore(&dev->req_lock, flags);
+
+ /* no buffer copies needed, unless the network stack did it
+ * or the hardware can't use skb buffers.
+ * or there's not enough space for any RNDIS headers we need
+ */
+ if (rndis_active(dev)) {
+ struct sk_buff *skb_rndis;
+
+ skb_rndis = skb_realloc_headroom (skb,
+ sizeof (struct rndis_packet_msg_type));
+ if (!skb_rndis)
+ goto drop;
+
+ dev_kfree_skb_any (skb);
+ skb = skb_rndis;
+ rndis_add_hdr (skb);
+ length = skb->len;
+ }
+ req->buf = skb->data;
+ req->context = skb;
+ req->complete = tx_complete;
+
+ /* use zlp framing on tx for strict CDC-Ether conformance,
+ * though any robust network rx path ignores extra padding.
+ * and some hardware doesn't like to write zlps.
+ */
+ req->zero = 1;
+ if (!dev->zlp && (length % dev->in_ep->maxpacket) == 0)
+ length++;
+
+ req->length = length;
+
+ /* throttle highspeed IRQ rate back slightly */
+ if (gadget_is_dualspeed(dev->gadget))
+ req->no_interrupt = (dev->gadget->speed == USB_SPEED_HIGH)
+ ? ((atomic_read(&dev->tx_qlen) % qmult) != 0)
+ : 0;
+
+ retval = usb_ep_queue (dev->in_ep, req, GFP_ATOMIC);
+ switch (retval) {
+ default:
+ DEBUG (dev, "tx queue err %d\n", retval);
+ break;
+ case 0:
+ net->trans_start = jiffies;
+ atomic_inc (&dev->tx_qlen);
+ }
+
+ if (retval) {
+drop:
+ dev->stats.tx_dropped++;
+ dev_kfree_skb_any (skb);
+ spin_lock_irqsave(&dev->req_lock, flags);
+ if (list_empty (&dev->tx_reqs))
+ netif_start_queue (net);
+ list_add (&req->list, &dev->tx_reqs);
+ spin_unlock_irqrestore(&dev->req_lock, flags);
+ }
+ return 0;
+}
+
+/*-------------------------------------------------------------------------*/
+#endif
+
+static void eth_unbind (struct usb_gadget *gadget)
+{
+ struct eth_dev *dev = get_gadget_data (gadget);
+
+ printf("eth_unbind:...\n");
+
+ if (dev->stat_req) {
+ usb_ep_free_request (dev->status_ep, dev->stat_req);
+ dev->stat_req = NULL;
+ }
+
+ if (dev->tx_req) {
+ usb_ep_free_request (dev->in_ep, dev->tx_req);
+ dev->tx_req=NULL;
+ }
+
+ if (dev->rx_req) {
+ usb_ep_free_request (dev->in_ep, dev->rx_req);
+ dev->rx_req=NULL;
+ }
+
+/* unregister_netdev (dev->net);*/
+/* free_netdev(dev->net);*/
+
+ set_gadget_data (gadget, NULL);
+}
+
+static void eth_disconnect (struct usb_gadget *gadget)
+{
+ eth_reset_config (get_gadget_data (gadget));
+}
+
+static void eth_suspend (struct usb_gadget *gadget)
+{
+ /* Not used */
+}
+
+static void eth_resume (struct usb_gadget *gadget)
+{
+ /* Not used */
+}
+
+/*-------------------------------------------------------------------------*/
+
+static int is_eth_addr_valid(char *str)
+{
+ if (strlen(str) == 17) {
+ int i;
+ char *p, *q;
+ uchar ea[6];
+
+ /* see if it looks like an ethernet address */
+
+ p = str;
+
+ for (i = 0; i < 6; i++) {
+ char term = (i == 5 ? '\0' : ':');
+
+ ea[i] = simple_strtol(p, &q, 16);
+
+ if ((q - p) != 2 || *q++ != term)
+ break;
+
+ p = q;
+ }
+
+ if (i == 6) /* it looks ok */
+ return 1;
+ }
+ return 0;
+}
+
+static u8 nibble (unsigned char c)
+{
+ if (likely (isdigit (c)))
+ return c - '0';
+ c = toupper (c);
+ if (likely (isxdigit (c)))
+ return 10 + c - 'A';
+ return 0;
+}
+
+static int get_ether_addr(const char *str, u8 *dev_addr)
+{
+ if (str) {
+ unsigned i;
+
+ for (i = 0; i < 6; i++) {
+ unsigned char num;
+
+ if((*str == '.') || (*str == ':'))
+ str++;
+ num = nibble(*str++) << 4;
+ num |= (nibble(*str++));
+ dev_addr [i] = num;
+ }
+ if (is_valid_ether_addr (dev_addr))
+ return 0;
+ }
+ return 1;
+}
+
+static int eth_bind(struct usb_gadget *gadget)
+{
+ struct eth_dev *dev = &l_ethdev;
+ u8 cdc = 1, zlp = 1;
+ struct usb_ep *in_ep, *out_ep, *status_ep = NULL;
+ int gcnum;
+ u8 tmp[7];
+
+ /* these flags are only ever cleared; compiler take note */
+#ifndef DEV_CONFIG_CDC
+ cdc = 0;
+#endif
+ /* Because most host side USB stacks handle CDC Ethernet, that
+ * standard protocol is _strongly_ preferred for interop purposes.
+ * (By everyone except Microsoft.)
+ */
+ if (gadget_is_pxa (gadget)) {
+ /* pxa doesn't support altsettings */
+ cdc = 0;
+ } else if (gadget_is_musbhdrc(gadget)) {
+ /* reduce tx dma overhead by avoiding special cases */
+ zlp = 0;
+ } else if (gadget_is_sh(gadget)) {
+ /* sh doesn't support multiple interfaces or configs */
+ cdc = 0;
+ } else if (gadget_is_sa1100 (gadget)) {
+ /* hardware can't write zlps */
+ zlp = 0;
+ /* sa1100 CAN do CDC, without status endpoint ... we use
+ * non-CDC to be compatible with ARM Linux-2.4 "usb-eth".
+ */
+ cdc = 0;
+ }
+
+ gcnum = usb_gadget_controller_number (gadget);
+ if (gcnum >= 0)
+ device_desc.bcdDevice = cpu_to_le16 (0x0300 + gcnum);
+ else {
+ /* can't assume CDC works. don't want to default to
+ * anything less functional on CDC-capable hardware,
+ * so we fail in this case.
+ */
+ dev_err (&gadget->dev,
+ "controller '%s' not recognized\n",
+ gadget->name);
+ return -ENODEV;
+ }
+
+ /* CDC subset ... recognized by Linux since 2.4.10, but Windows
+ * drivers aren't widely available. (That may be improved by
+ * supporting one submode of the "SAFE" variant of MDLM.)
+ */
+ if (!cdc) {
+ device_desc.idVendor =
+ __constant_cpu_to_le16(SIMPLE_VENDOR_NUM);
+ device_desc.idProduct =
+ __constant_cpu_to_le16(SIMPLE_PRODUCT_NUM);
+ }
+
+ /* support optional vendor/distro customization */
+#if defined(CONFIG_USB_CDC_VENDOR_ID) && defined(CONFIG_USB_CDC_PRODUCT_ID)
+ device_desc.idVendor = cpu_to_le16(CONFIG_USB_CDC_VENDOR_ID);
+ device_desc.idProduct = cpu_to_le16(CONFIG_USB_CDC_PRODUCT_ID);
+#endif
+ if (bcdDevice)
+ device_desc.bcdDevice = cpu_to_le16(bcdDevice);
+ if (iManufacturer)
+ strcpy (manufacturer, iManufacturer);
+ if (iProduct)
+ strcpy (product_desc, iProduct);
+ if (iSerialNumber) {
+ device_desc.iSerialNumber = STRING_SERIALNUMBER,
+ strcpy(serial_number, iSerialNumber);
+ }
+
+ /* all we really need is bulk IN/OUT */
+ usb_ep_autoconfig_reset (gadget);
+ in_ep = usb_ep_autoconfig (gadget, &fs_source_desc);
+ if (!in_ep) {
+autoconf_fail:
+ dev_err (&gadget->dev,
+ "can't autoconfigure on %s\n",
+ gadget->name);
+ return -ENODEV;
+ }
+ in_ep->driver_data = in_ep; /* claim */
+
+ out_ep = usb_ep_autoconfig (gadget, &fs_sink_desc);
+ if (!out_ep)
+ goto autoconf_fail;
+ out_ep->driver_data = out_ep; /* claim */
+
+#if defined(DEV_CONFIG_CDC)
+ /* CDC Ethernet control interface doesn't require a status endpoint.
+ * Since some hosts expect one, try to allocate one anyway.
+ */
+ if (cdc) {
+ status_ep = usb_ep_autoconfig (gadget, &fs_status_desc);
+ if (status_ep) {
+ status_ep->driver_data = status_ep; /* claim */
+ } else if (cdc) {
+ control_intf.bNumEndpoints = 0;
+ /* FIXME remove endpoint from descriptor list */
+ }
+ }
+#endif
+
+ /* one config: cdc, else minimal subset */
+ if (!cdc) {
+ eth_config.bNumInterfaces = 1;
+ eth_config.iConfiguration = STRING_SUBSET;
+
+ /* use functions to set these up, in case we're built to work
+ * with multiple controllers and must override CDC Ethernet.
+ */
+ fs_subset_descriptors();
+ hs_subset_descriptors();
+ }
+
+ device_desc.bMaxPacketSize0 = gadget->ep0->maxpacket;
+ usb_gadget_set_selfpowered (gadget);
+
+ if (gadget_is_dualspeed(gadget)) {
+ if (!cdc)
+ dev_qualifier.bDeviceClass = USB_CLASS_VENDOR_SPEC;
+
+ /* assumes ep0 uses the same value for both speeds ... */
+ dev_qualifier.bMaxPacketSize0 = device_desc.bMaxPacketSize0;
+
+ /* and that all endpoints are dual-speed */
+ hs_source_desc.bEndpointAddress =
+ fs_source_desc.bEndpointAddress;
+ hs_sink_desc.bEndpointAddress =
+ fs_sink_desc.bEndpointAddress;
+#if defined(DEV_CONFIG_CDC)
+ if (status_ep)
+ hs_status_desc.bEndpointAddress =
+ fs_status_desc.bEndpointAddress;
+#endif
+ }
+
+ if (gadget_is_otg(gadget)) {
+ otg_descriptor.bmAttributes |= USB_OTG_HNP,
+ eth_config.bmAttributes |= USB_CONFIG_ATT_WAKEUP;
+ eth_config.bMaxPower = 4;
+ }
+
+ dev->net = &l_netdev;
+ strcpy (dev->net->name, USB_NET_NAME);
+
+ dev->cdc = cdc;
+ dev->zlp = zlp;
+
+ dev->in_ep = in_ep;
+ dev->out_ep = out_ep;
+ dev->status_ep = status_ep;
+
+ /* Module params for these addresses should come from ID proms.
+ * The host side address is used with CDC, and commonly
+ * ends up in a persistent config database. It's not clear if
+ * host side code for the SAFE thing cares -- its original BLAN
+ * thing didn't, Sharp never assigned those addresses on Zaurii.
+ */
+ get_ether_addr(dev_addr, dev->net->enetaddr);
+
+ memset(tmp, 0, sizeof(tmp));
+ memcpy(tmp, dev->net->enetaddr, sizeof(dev->net->enetaddr));
+
+ get_ether_addr(host_addr, dev->host_mac);
+
+ sprintf (ethaddr, "%02X%02X%02X%02X%02X%02X",
+ dev->host_mac [0], dev->host_mac [1],
+ dev->host_mac [2], dev->host_mac [3],
+ dev->host_mac [4], dev->host_mac [5]);
+
+ INFO (dev, "using %s, OUT %s IN %s%s%s\n", gadget->name,
+ out_ep->name, in_ep->name,
+ status_ep ? " STATUS " : "",
+ status_ep ? status_ep->name : ""
+ );
+ INFO (dev, "MAC %02x:%02x:%02x:%02x:%02x:%02x\n",
+ dev->net->enetaddr [0], dev->net->enetaddr [1],
+ dev->net->enetaddr [2], dev->net->enetaddr [3],
+ dev->net->enetaddr [4], dev->net->enetaddr [5]);
+
+ if (cdc) {
+ INFO (dev, "HOST MAC %02x:%02x:%02x:%02x:%02x:%02x\n",
+ dev->host_mac [0], dev->host_mac [1],
+ dev->host_mac [2], dev->host_mac [3],
+ dev->host_mac [4], dev->host_mac [5]);
+ }
+
+ /* use PKTSIZE (or aligned... from u-boot) and set
+ * wMaxSegmentSize accordingly*/
+ dev->mtu = PKTSIZE_ALIGN; /* RNDIS does not like this, only 1514, TODO*/
+
+ /* preallocate control message data and buffer */
+ dev->req = usb_ep_alloc_request (gadget->ep0, GFP_KERNEL);
+ if (!dev->req)
+ goto fail;
+ dev->req->buf = control_req;
+ dev->req->complete = eth_setup_complete;
+
+ /* ... and maybe likewise for status transfer */
+#if defined(DEV_CONFIG_CDC)
+ if (dev->status_ep) {
+ dev->stat_req = usb_ep_alloc_request(gadget->ep0, GFP_KERNEL);
+ dev->stat_req->buf = status_req;
+ if (!dev->stat_req) {
+ dev->stat_req->buf=NULL;
+ usb_ep_free_request (gadget->ep0, dev->req);
+
+ goto fail;
+ }
+ dev->stat_req->context = NULL;
+ }
+#endif
+
+ /* finish hookup to lower layer ... */
+ dev->gadget = gadget;
+ set_gadget_data (gadget, dev);
+ gadget->ep0->driver_data = dev;
+
+ /* two kinds of host-initiated state changes:
+ * - iff DATA transfer is active, carrier is "on"
+ * - tx queueing enabled if open *and* carrier is "on"
+ */
+ return 0;
+
+fail:
+ dev_dbg(&gadget->dev, "register_netdev failed\n");
+ eth_unbind (gadget);
+ return -ENOMEM;
+}
+
+static int usb_eth_init(struct eth_device* netdev, bd_t* bd)
+{
+ struct eth_dev *dev=&l_ethdev;
+ struct usb_gadget *gadget;
+ unsigned long ts;
+ unsigned long timeout = USB_CONNECT_TIMEOUT;
+
+ if (!netdev) {
+ printf("ERROR: received NULL ptr\n");
+ goto fail;
+ }
+
+ dev->network_started = 0;
+ dev->tx_req = NULL;
+ dev->rx_req = NULL;
+
+ packet_received = 0;
+ packet_sent = 0;
+
+ gadget = dev->gadget;
+ usb_gadget_connect(gadget);
+
+ if (getenv("cdc_connect_timeout"))
+ timeout = simple_strtoul(getenv("cdc_connect_timeout"),
+ NULL, 10) * CONFIG_SYS_HZ;
+ ts = get_timer(0);
+ while (!l_ethdev.network_started)
+ {
+ /* Handle control-c and timeouts */
+ if (ctrlc() || (get_timer(ts) > timeout)) {
+ printf("The remote end did not respond in time.\n");
+ goto fail;
+ }
+ usb_gadget_handle_interrupts();
+ }
+
+ rx_submit (dev, dev->rx_req, 0);
+ return 0;
+fail:
+ return -1;
+}
+
+static int usb_eth_send(struct eth_device* netdev, volatile void* packet, int length)
+{
+ int retval;
+ struct usb_request *req = NULL;
+
+ struct eth_dev *dev = &l_ethdev;
+ dprintf("%s:...\n",__func__);
+
+ req = dev->tx_req;
+
+ req->buf = (void *)packet;
+ req->context = NULL;
+ req->complete = tx_complete;
+
+ /* use zlp framing on tx for strict CDC-Ether conformance,
+ * though any robust network rx path ignores extra padding.
+ * and some hardware doesn't like to write zlps.
+ */
+ req->zero = 1;
+ if (!dev->zlp && (length % dev->in_ep->maxpacket) == 0)
+ length++;
+
+ req->length = length;
+#if 0
+ /* throttle highspeed IRQ rate back slightly */
+ if (gadget_is_dualspeed(dev->gadget))
+ req->no_interrupt = (dev->gadget->speed == USB_SPEED_HIGH)
+ ? ((dev->tx_qlen % qmult) != 0) : 0;
+#endif
+ dev->tx_qlen=1;
+
+ retval = usb_ep_queue (dev->in_ep, req, GFP_ATOMIC);
+
+ if (!retval)
+ dprintf("%s: packet queued\n",__func__);
+ while(!packet_sent)
+ {
+ packet_sent=0;
+ }
+
+ return 0;
+}
+
+static int usb_eth_recv(struct eth_device* netdev)
+{
+ struct eth_dev *dev = &l_ethdev;
+
+ usb_gadget_handle_interrupts();
+
+ if (packet_received)
+ {
+ dprintf("%s: packet received \n",__func__);
+ if (dev->rx_req)
+ {
+ NetReceive(NetRxPackets[0],dev->rx_req->length);
+ packet_received=0;
+
+ if (dev->rx_req)
+ rx_submit (dev, dev->rx_req, 0);
+ }
+ else printf("dev->rx_req invalid\n");
+ }
+ return 0;
+}
+
+void usb_eth_halt(struct eth_device* netdev)
+{
+ struct eth_dev *dev =&l_ethdev;
+
+ if (!netdev)
+ {
+ printf("ERROR: received NULL ptr\n");
+ return;
+ }
+
+ usb_gadget_disconnect(dev->gadget);
+}
+
+static struct usb_gadget_driver eth_driver = {
+ .speed = DEVSPEED,
+
+ .bind = eth_bind,
+ .unbind = eth_unbind,
+
+ .setup = eth_setup,
+ .disconnect = eth_disconnect,
+
+ .suspend = eth_suspend,
+ .resume = eth_resume,
+};
+
+int usb_eth_initialize(bd_t *bi)
+{
+ int status = 0;
+ struct eth_device *netdev=&l_netdev;
+
+ sprintf(netdev->name,"usb_ether");
+
+ netdev->init = usb_eth_init;
+ netdev->send = usb_eth_send;
+ netdev->recv = usb_eth_recv;
+ netdev->halt = usb_eth_halt;
+
+#ifdef CONFIG_MCAST_TFTP
+ #error not supported
+#endif
+ /* Configure default mac-addresses for the USB ethernet device */
+#ifdef CONFIG_USBNET_DEV_ADDR
+ strncpy(dev_addr, CONFIG_USBNET_DEV_ADDR, sizeof(dev_addr));
+#endif
+#ifdef CONFIG_USBNET_HOST_ADDR
+ strncpy(host_addr, CONFIG_USBNET_HOST_ADDR, sizeof(host_addr));
+#endif
+ /* Check if the user overruled the MAC addresses */
+ if (getenv("usbnet_devaddr"))
+ strncpy(dev_addr, getenv("usbnet_devaddr"),
+ sizeof(dev_addr));
+
+ if (getenv("usbnet_hostaddr"))
+ strncpy(host_addr, getenv("usbnet_hostaddr"),
+ sizeof(host_addr));
+
+ /* Make sure both strings are terminated */
+ dev_addr[sizeof(dev_addr)-1] = '\0';
+ host_addr[sizeof(host_addr)-1] = '\0';
+
+ if (!is_eth_addr_valid(dev_addr)) {
+ printf("ERROR: Need valid 'usbnet_devaddr' to be set\n");
+ status = -1;
+ }
+ if (!is_eth_addr_valid(host_addr)) {
+ printf("ERROR: Need valid 'usbnet_hostaddr' to be set\n");
+ status = -1;
+ }
+ if (status)
+ goto fail;
+
+ status = usb_gadget_register_driver(ð_driver);
+ if (status < 0)
+ goto fail;
+
+ eth_register(netdev);
+ return 0;
+
+fail:
+ printf("%s failed\n", __func__ );
+ return status;
+}
+
diff --git a/drivers/usb/gadget/gadget_chips.h b/drivers/usb/gadget/gadget_chips.h
new file mode 100644
index 0000000..480bc87
--- /dev/null
+++ b/drivers/usb/gadget/gadget_chips.h
@@ -0,0 +1,219 @@
+/*
+ * USB device controllers have lots of quirks. Use these macros in
+ * gadget drivers or other code that needs to deal with them, and which
+ * autoconfigures instead of using early binding to the hardware.
+ *
+ * This SHOULD eventually work like the ARM mach_is_*() stuff, driven by
+ * some config file that gets updated as new hardware is supported.
+ * (And avoiding all runtime comparisons in typical one-choice configs!)
+ *
+ * NOTE: some of these controller drivers may not be available yet.
+ * Some are available on 2.4 kernels; several are available, but not
+ * yet pushed in the 2.6 mainline tree.
+ *
+ * Ported to U-boot by: Thomas Smits <ts.smits at gmail.com> and
+ * Remy Bohmer <linux at bohmer.net>
+ */
+#ifdef CONFIG_USB_GADGET_NET2280
+#define gadget_is_net2280(g) !strcmp("net2280", (g)->name)
+#else
+#define gadget_is_net2280(g) 0
+#endif
+
+#ifdef CONFIG_USB_GADGET_AMD5536UDC
+#define gadget_is_amd5536udc(g) !strcmp("amd5536udc", (g)->name)
+#else
+#define gadget_is_amd5536udc(g) 0
+#endif
+
+#ifdef CONFIG_USB_GADGET_DUMMY_HCD
+#define gadget_is_dummy(g) !strcmp("dummy_udc", (g)->name)
+#else
+#define gadget_is_dummy(g) 0
+#endif
+
+#ifdef CONFIG_USB_GADGET_PXA2XX
+#define gadget_is_pxa(g) !strcmp("pxa2xx_udc", (g)->name)
+#else
+#define gadget_is_pxa(g) 0
+#endif
+
+#ifdef CONFIG_USB_GADGET_GOKU
+#define gadget_is_goku(g) !strcmp("goku_udc", (g)->name)
+#else
+#define gadget_is_goku(g) 0
+#endif
+
+/* SH3 UDC -- not yet ported 2.4 --> 2.6 */
+#ifdef CONFIG_USB_GADGET_SUPERH
+#define gadget_is_sh(g) !strcmp("sh_udc", (g)->name)
+#else
+#define gadget_is_sh(g) 0
+#endif
+
+/* not yet stable on 2.6 (would help "original Zaurus") */
+#ifdef CONFIG_USB_GADGET_SA1100
+#define gadget_is_sa1100(g) !strcmp("sa1100_udc", (g)->name)
+#else
+#define gadget_is_sa1100(g) 0
+#endif
+
+#ifdef CONFIG_USB_GADGET_LH7A40X
+#define gadget_is_lh7a40x(g) !strcmp("lh7a40x_udc", (g)->name)
+#else
+#define gadget_is_lh7a40x(g) 0
+#endif
+
+/* handhelds.org tree (?) */
+#ifdef CONFIG_USB_GADGET_MQ11XX
+#define gadget_is_mq11xx(g) !strcmp("mq11xx_udc", (g)->name)
+#else
+#define gadget_is_mq11xx(g) 0
+#endif
+
+#ifdef CONFIG_USB_GADGET_OMAP
+#define gadget_is_omap(g) !strcmp("omap_udc", (g)->name)
+#else
+#define gadget_is_omap(g) 0
+#endif
+
+/* not yet ported 2.4 --> 2.6 */
+#ifdef CONFIG_USB_GADGET_N9604
+#define gadget_is_n9604(g) !strcmp("n9604_udc", (g)->name)
+#else
+#define gadget_is_n9604(g) 0
+#endif
+
+/* various unstable versions available */
+#ifdef CONFIG_USB_GADGET_PXA27X
+#define gadget_is_pxa27x(g) !strcmp("pxa27x_udc", (g)->name)
+#else
+#define gadget_is_pxa27x(g) 0
+#endif
+
+#ifdef CONFIG_USB_GADGET_ATMEL_USBA
+#define gadget_is_atmel_usba(g) !strcmp("atmel_usba_udc", (g)->name)
+#else
+#define gadget_is_atmel_usba(g) 0
+#endif
+
+#ifdef CONFIG_USB_GADGET_S3C2410
+#define gadget_is_s3c2410(g) !strcmp("s3c2410_udc", (g)->name)
+#else
+#define gadget_is_s3c2410(g) 0
+#endif
+
+#ifdef CONFIG_USB_GADGET_AT91
+#define gadget_is_at91(g) !strcmp("at91_udc", (g)->name)
+#else
+#define gadget_is_at91(g) 0
+#endif
+
+/* status unclear */
+#ifdef CONFIG_USB_GADGET_IMX
+#define gadget_is_imx(g) !strcmp("imx_udc", (g)->name)
+#else
+#define gadget_is_imx(g) 0
+#endif
+
+#ifdef CONFIG_USB_GADGET_FSL_USB2
+#define gadget_is_fsl_usb2(g) !strcmp("fsl-usb2-udc", (g)->name)
+#else
+#define gadget_is_fsl_usb2(g) 0
+#endif
+
+/* Mentor high speed function controller */
+/* from Montavista kernel (?) */
+#ifdef CONFIG_USB_GADGET_MUSBHSFC
+#define gadget_is_musbhsfc(g) !strcmp("musbhsfc_udc", (g)->name)
+#else
+#define gadget_is_musbhsfc(g) 0
+#endif
+
+/* Mentor high speed "dual role" controller, in peripheral role */
+#ifdef CONFIG_USB_GADGET_MUSB_HDRC
+#define gadget_is_musbhdrc(g) !strcmp("musb_hdrc", (g)->name)
+#else
+#define gadget_is_musbhdrc(g) 0
+#endif
+
+/* from Montavista kernel (?) */
+#ifdef CONFIG_USB_GADGET_MPC8272
+#define gadget_is_mpc8272(g) !strcmp("mpc8272_udc", (g)->name)
+#else
+#define gadget_is_mpc8272(g) 0
+#endif
+
+#ifdef CONFIG_USB_GADGET_M66592
+#define gadget_is_m66592(g) !strcmp("m66592_udc", (g)->name)
+#else
+#define gadget_is_m66592(g) 0
+#endif
+
+
+// CONFIG_USB_GADGET_SX2
+// CONFIG_USB_GADGET_AU1X00
+// ...
+
+
+/**
+ * usb_gadget_controller_number - support bcdDevice id convention
+ * @gadget: the controller being driven
+ *
+ * Return a 2-digit BCD value associated with the peripheral controller,
+ * suitable for use as part of a bcdDevice value, or a negative error code.
+ *
+ * NOTE: this convention is purely optional, and has no meaning in terms of
+ * any USB specification. If you want to use a different convention in your
+ * gadget driver firmware -- maybe a more formal revision ID -- feel free.
+ *
+ * Hosts see these bcdDevice numbers, and are allowed (but not encouraged!)
+ * to change their behavior accordingly. For example it might help avoiding
+ * some chip bug.
+ */
+static inline int usb_gadget_controller_number(struct usb_gadget *gadget)
+{
+ if (gadget_is_net2280(gadget))
+ return 0x01;
+ else if (gadget_is_dummy(gadget))
+ return 0x02;
+ else if (gadget_is_pxa(gadget))
+ return 0x03;
+ else if (gadget_is_sh(gadget))
+ return 0x04;
+ else if (gadget_is_sa1100(gadget))
+ return 0x05;
+ else if (gadget_is_goku(gadget))
+ return 0x06;
+ else if (gadget_is_mq11xx(gadget))
+ return 0x07;
+ else if (gadget_is_omap(gadget))
+ return 0x08;
+ else if (gadget_is_lh7a40x(gadget))
+ return 0x09;
+ else if (gadget_is_n9604(gadget))
+ return 0x10;
+ else if (gadget_is_pxa27x(gadget))
+ return 0x11;
+ else if (gadget_is_s3c2410(gadget))
+ return 0x12;
+ else if (gadget_is_at91(gadget))
+ return 0x13;
+ else if (gadget_is_imx(gadget))
+ return 0x14;
+ else if (gadget_is_musbhsfc(gadget))
+ return 0x15;
+ else if (gadget_is_musbhdrc(gadget))
+ return 0x16;
+ else if (gadget_is_mpc8272(gadget))
+ return 0x17;
+ else if (gadget_is_atmel_usba(gadget))
+ return 0x18;
+ else if (gadget_is_fsl_usb2(gadget))
+ return 0x19;
+ else if (gadget_is_amd5536udc(gadget))
+ return 0x20;
+ else if (gadget_is_m66592(gadget))
+ return 0x21;
+ return -ENOENT;
+}
diff --git a/drivers/usb/gadget/usbstring.c b/drivers/usb/gadget/usbstring.c
new file mode 100644
index 0000000..168f75f
--- /dev/null
+++ b/drivers/usb/gadget/usbstring.c
@@ -0,0 +1,134 @@
+/*
+ * Copyright (C) 2003 David Brownell
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 2.1 of the License, or
+ * (at your option) any later version.
+ *
+ * Ported to U-boot by: Thomas Smits <ts.smits at gmail.com> and
+ * Remy Bohmer <linux at bohmer.net>
+ */
+
+#include <common.h>
+#include <asm/errno.h>
+#include <linux/usb/ch9.h>
+#include <linux/usb/gadget.h>
+
+#include <asm/unaligned.h>
+
+
+static int utf8_to_utf16le(const char *s, __le16 *cp, unsigned len)
+{
+ int count = 0;
+ u8 c;
+ u16 uchar;
+
+ /* this insists on correct encodings, though not minimal ones.
+ * BUT it currently rejects legit 4-byte UTF-8 code points,
+ * which need surrogate pairs. (Unicode 3.1 can use them.)
+ */
+ while (len != 0 && (c = (u8) *s++) != 0) {
+ if ((c & 0x80)) {
+ // 2-byte sequence:
+ // 00000yyyyyxxxxxx = 110yyyyy 10xxxxxx
+ if ((c & 0xe0) == 0xc0) {
+ uchar = (c & 0x1f) << 6;
+
+ c = (u8) *s++;
+ if ((c & 0xc0) != 0x80)
+ goto fail;
+ c &= 0x3f;
+ uchar |= c;
+
+ // 3-byte sequence (most CJKV characters):
+ // zzzzyyyyyyxxxxxx = 1110zzzz 10yyyyyy 10xxxxxx
+ } else if ((c & 0xf0) == 0xe0) {
+ uchar = (c & 0x0f) << 12;
+
+ c = (u8) *s++;
+ if ((c & 0xc0) != 0x80)
+ goto fail;
+ c &= 0x3f;
+ uchar |= c << 6;
+
+ c = (u8) *s++;
+ if ((c & 0xc0) != 0x80)
+ goto fail;
+ c &= 0x3f;
+ uchar |= c;
+
+ /* no bogus surrogates */
+ if (0xd800 <= uchar && uchar <= 0xdfff)
+ goto fail;
+
+ // 4-byte sequence (surrogate pairs, currently rare):
+ // 11101110wwwwzzzzyy + 110111yyyyxxxxxx
+ // = 11110uuu 10uuzzzz 10yyyyyy 10xxxxxx
+ // (uuuuu = wwww + 1)
+ // FIXME accept the surrogate code points (only)
+
+ } else
+ goto fail;
+ } else
+ uchar = c;
+ put_unaligned_le16(uchar, cp++);
+ count++;
+ len--;
+ }
+ return count;
+fail:
+ return -1;
+}
+
+
+/**
+ * usb_gadget_get_string - fill out a string descriptor
+ * @table: of c strings encoded using UTF-8
+ * @id: string id, from low byte of wValue in get string descriptor
+ * @buf: at least 256 bytes
+ *
+ * Finds the UTF-8 string matching the ID, and converts it into a
+ * string descriptor in utf16-le.
+ * Returns length of descriptor (always even) or negative errno
+ *
+ * If your driver needs stings in multiple languages, you'll probably
+ * "switch (wIndex) { ... }" in your ep0 string descriptor logic,
+ * using this routine after choosing which set of UTF-8 strings to use.
+ * Note that US-ASCII is a strict subset of UTF-8; any string bytes with
+ * the eighth bit set will be multibyte UTF-8 characters, not ISO-8859/1
+ * characters (which are also widely used in C strings).
+ */
+int
+usb_gadget_get_string (struct usb_gadget_strings *table, int id, u8 *buf)
+{
+ struct usb_string *s;
+ int len;
+
+ /* descriptor 0 has the language id */
+ if (id == 0) {
+ buf [0] = 4;
+ buf [1] = USB_DT_STRING;
+ buf [2] = (u8) table->language;
+ buf [3] = (u8) (table->language >> 8);
+ return 4;
+ }
+ for (s = table->strings; s && s->s; s++)
+ if (s->id == id)
+ break;
+
+ /* unrecognized: stall. */
+ if (!s || !s->s)
+ return -EINVAL;
+
+ /* string descriptors have length, tag, then UTF16-LE text */
+ len = min ((size_t) 126, strlen (s->s));
+ memset (buf + 2, 0, 2 * len); /* zero all the bytes */
+ len = utf8_to_utf16le(s->s, (__le16 *)&buf[2], len);
+ if (len < 0)
+ return -EINVAL;
+ buf [0] = (len + 1) * 2;
+ buf [1] = USB_DT_STRING;
+ return buf [0];
+}
+
diff --git a/include/linux/usb/cdc.h b/include/linux/usb/cdc.h
new file mode 100644
index 0000000..9b129c9
--- /dev/null
+++ b/include/linux/usb/cdc.h
@@ -0,0 +1,224 @@
+/*
+ * USB Communications Device Class (CDC) definitions
+ *
+ * CDC says how to talk to lots of different types of network adapters,
+ * notably ethernet adapters and various modems. It's used mostly with
+ * firmware based USB peripherals.
+ *
+ * Ported to U-boot by: Thomas Smits <ts.smits at gmail.com> and
+ * Remy Bohmer <linux at bohmer.net>
+ */
+
+
+
+#define USB_CDC_SUBCLASS_ACM 0x02
+#define USB_CDC_SUBCLASS_ETHERNET 0x06
+#define USB_CDC_SUBCLASS_WHCM 0x08
+#define USB_CDC_SUBCLASS_DMM 0x09
+#define USB_CDC_SUBCLASS_MDLM 0x0a
+#define USB_CDC_SUBCLASS_OBEX 0x0b
+
+#define USB_CDC_PROTO_NONE 0
+
+#define USB_CDC_ACM_PROTO_AT_V25TER 1
+#define USB_CDC_ACM_PROTO_AT_PCCA101 2
+#define USB_CDC_ACM_PROTO_AT_PCCA101_WAKE 3
+#define USB_CDC_ACM_PROTO_AT_GSM 4
+#define USB_CDC_ACM_PROTO_AT_3G 5
+#define USB_CDC_ACM_PROTO_AT_CDMA 6
+#define USB_CDC_ACM_PROTO_VENDOR 0xff
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * Class-Specific descriptors ... there are a couple dozen of them
+ */
+
+#define USB_CDC_HEADER_TYPE 0x00 /* header_desc */
+#define USB_CDC_CALL_MANAGEMENT_TYPE 0x01 /* call_mgmt_descriptor */
+#define USB_CDC_ACM_TYPE 0x02 /* acm_descriptor */
+#define USB_CDC_UNION_TYPE 0x06 /* union_desc */
+#define USB_CDC_COUNTRY_TYPE 0x07
+#define USB_CDC_NETWORK_TERMINAL_TYPE 0x0a /* network_terminal_desc */
+#define USB_CDC_ETHERNET_TYPE 0x0f /* ether_desc */
+#define USB_CDC_WHCM_TYPE 0x11
+#define USB_CDC_MDLM_TYPE 0x12 /* mdlm_desc */
+#define USB_CDC_MDLM_DETAIL_TYPE 0x13 /* mdlm_detail_desc */
+#define USB_CDC_DMM_TYPE 0x14
+#define USB_CDC_OBEX_TYPE 0x15
+
+/* "Header Functional Descriptor" from CDC spec 5.2.3.1 */
+struct usb_cdc_header_desc {
+ __u8 bLength;
+ __u8 bDescriptorType;
+ __u8 bDescriptorSubType;
+
+ __le16 bcdCDC;
+} __attribute__ ((packed));
+
+/* "Call Management Descriptor" from CDC spec 5.2.3.2 */
+struct usb_cdc_call_mgmt_descriptor {
+ __u8 bLength;
+ __u8 bDescriptorType;
+ __u8 bDescriptorSubType;
+
+ __u8 bmCapabilities;
+#define USB_CDC_CALL_MGMT_CAP_CALL_MGMT 0x01
+#define USB_CDC_CALL_MGMT_CAP_DATA_INTF 0x02
+
+ __u8 bDataInterface;
+} __attribute__ ((packed));
+
+/* "Abstract Control Management Descriptor" from CDC spec 5.2.3.3 */
+struct usb_cdc_acm_descriptor {
+ __u8 bLength;
+ __u8 bDescriptorType;
+ __u8 bDescriptorSubType;
+
+ __u8 bmCapabilities;
+} __attribute__ ((packed));
+
+/* capabilities from 5.2.3.3 */
+
+#define USB_CDC_COMM_FEATURE 0x01
+#define USB_CDC_CAP_LINE 0x02
+#define USB_CDC_CAP_BRK 0x04
+#define USB_CDC_CAP_NOTIFY 0x08
+
+/* "Union Functional Descriptor" from CDC spec 5.2.3.8 */
+struct usb_cdc_union_desc {
+ __u8 bLength;
+ __u8 bDescriptorType;
+ __u8 bDescriptorSubType;
+
+ __u8 bMasterInterface0;
+ __u8 bSlaveInterface0;
+ /* ... and there could be other slave interfaces */
+} __attribute__ ((packed));
+
+/* "Country Selection Functional Descriptor" from CDC spec 5.2.3.9 */
+struct usb_cdc_country_functional_desc {
+ __u8 bLength;
+ __u8 bDescriptorType;
+ __u8 bDescriptorSubType;
+
+ __u8 iCountryCodeRelDate;
+ __le16 wCountyCode0;
+ /* ... and there can be a lot of country codes */
+} __attribute__ ((packed));
+
+/* "Network Channel Terminal Functional Descriptor" from CDC spec 5.2.3.11 */
+struct usb_cdc_network_terminal_desc {
+ __u8 bLength;
+ __u8 bDescriptorType;
+ __u8 bDescriptorSubType;
+
+ __u8 bEntityId;
+ __u8 iName;
+ __u8 bChannelIndex;
+ __u8 bPhysicalInterface;
+} __attribute__ ((packed));
+
+/* "Ethernet Networking Functional Descriptor" from CDC spec 5.2.3.16 */
+struct usb_cdc_ether_desc {
+ __u8 bLength;
+ __u8 bDescriptorType;
+ __u8 bDescriptorSubType;
+
+ __u8 iMACAddress;
+ __le32 bmEthernetStatistics;
+ __le16 wMaxSegmentSize;
+ __le16 wNumberMCFilters;
+ __u8 bNumberPowerFilters;
+} __attribute__ ((packed));
+
+/* "MDLM Functional Descriptor" from CDC WMC spec 6.7.2.3 */
+struct usb_cdc_mdlm_desc {
+ __u8 bLength;
+ __u8 bDescriptorType;
+ __u8 bDescriptorSubType;
+
+ __le16 bcdVersion;
+ __u8 bGUID[16];
+} __attribute__ ((packed));
+
+/* "MDLM Detail Functional Descriptor" from CDC WMC spec 6.7.2.4 */
+struct usb_cdc_mdlm_detail_desc {
+ __u8 bLength;
+ __u8 bDescriptorType;
+ __u8 bDescriptorSubType;
+
+ /* type is associated with mdlm_desc.bGUID */
+ __u8 bGuidDescriptorType;
+ __u8 bDetailData[0];
+} __attribute__ ((packed));
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * Class-Specific Control Requests (6.2)
+ *
+ * section 3.6.2.1 table 4 has the ACM profile, for modems.
+ * section 3.8.2 table 10 has the ethernet profile.
+ */
+
+#define USB_CDC_SEND_ENCAPSULATED_COMMAND 0x00
+#define USB_CDC_GET_ENCAPSULATED_RESPONSE 0x01
+#define USB_CDC_REQ_SET_LINE_CODING 0x20
+#define USB_CDC_REQ_GET_LINE_CODING 0x21
+#define USB_CDC_REQ_SET_CONTROL_LINE_STATE 0x22
+#define USB_CDC_REQ_SEND_BREAK 0x23
+#define USB_CDC_SET_ETHERNET_MULTICAST_FILTERS 0x40
+#define USB_CDC_SET_ETHERNET_PM_PATTERN_FILTER 0x41
+#define USB_CDC_GET_ETHERNET_PM_PATTERN_FILTER 0x42
+#define USB_CDC_SET_ETHERNET_PACKET_FILTER 0x43
+#define USB_CDC_GET_ETHERNET_STATISTIC 0x44
+
+/* Line Coding Structure from CDC spec 6.2.13 */
+struct usb_cdc_line_coding {
+ __le32 dwDTERate;
+ __u8 bCharFormat;
+#define USB_CDC_1_STOP_BITS 0
+#define USB_CDC_1_5_STOP_BITS 1
+#define USB_CDC_2_STOP_BITS 2
+
+ __u8 bParityType;
+#define USB_CDC_NO_PARITY 0
+#define USB_CDC_ODD_PARITY 1
+#define USB_CDC_EVEN_PARITY 2
+#define USB_CDC_MARK_PARITY 3
+#define USB_CDC_SPACE_PARITY 4
+
+ __u8 bDataBits;
+} __attribute__ ((packed));
+
+/* table 62; bits in multicast filter */
+#define USB_CDC_PACKET_TYPE_PROMISCUOUS (1 << 0)
+#define USB_CDC_PACKET_TYPE_ALL_MULTICAST (1 << 1) /* no filter */
+#define USB_CDC_PACKET_TYPE_DIRECTED (1 << 2)
+#define USB_CDC_PACKET_TYPE_BROADCAST (1 << 3)
+#define USB_CDC_PACKET_TYPE_MULTICAST (1 << 4) /* filtered */
+
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * Class-Specific Notifications (6.3) sent by interrupt transfers
+ *
+ * section 3.8.2 table 11 of the CDC spec lists Ethernet notifications
+ * section 3.6.2.1 table 5 specifies ACM notifications
+ */
+
+#define USB_CDC_NOTIFY_NETWORK_CONNECTION 0x00
+#define USB_CDC_NOTIFY_RESPONSE_AVAILABLE 0x01
+#define USB_CDC_NOTIFY_SERIAL_STATE 0x20
+#define USB_CDC_NOTIFY_SPEED_CHANGE 0x2a
+
+struct usb_cdc_notification {
+ __u8 bmRequestType;
+ __u8 bNotificationType;
+ __le16 wValue;
+ __le16 wIndex;
+ __le16 wLength;
+} __attribute__ ((packed));
+
diff --git a/include/linux/usb/ch9.h b/include/linux/usb/ch9.h
new file mode 100644
index 0000000..1091692
--- /dev/null
+++ b/include/linux/usb/ch9.h
@@ -0,0 +1,587 @@
+/*
+ * This file holds USB constants and structures that are needed for
+ * USB device APIs. These are used by the USB device model, which is
+ * defined in chapter 9 of the USB 2.0 specification and in the
+ * Wireless USB 1.0 (spread around). Linux has several APIs in C that
+ * need these:
+ *
+ * - the master/host side Linux-USB kernel driver API;
+ * - the "usbfs" user space API; and
+ * - the Linux "gadget" slave/device/peripheral side driver API.
+ *
+ * USB 2.0 adds an additional "On The Go" (OTG) mode, which lets systems
+ * act either as a USB master/host or as a USB slave/device. That means
+ * the master and slave side APIs benefit from working well together.
+ *
+ * There's also "Wireless USB", using low power short range radios for
+ * peripheral interconnection but otherwise building on the USB framework.
+ *
+ * Note all descriptors are declared '__attribute__((packed))' so that:
+ *
+ * [a] they never get padded, either internally (USB spec writers
+ * probably handled that) or externally;
+ *
+ * [b] so that accessing bigger-than-a-bytes fields will never
+ * generate bus errors on any platform, even when the location of
+ * its descriptor inside a bundle isn't "naturally aligned", and
+ *
+ * [c] for consistency, removing all doubt even when it appears to
+ * someone that the two other points are non-issues for that
+ * particular descriptor type.
+ *
+ * Ported to U-boot by: Thomas Smits <ts.smits at gmail.com> and
+ * Remy Bohmer <linux at bohmer.net>
+ */
+
+#ifndef __LINUX_USB_CH9_H
+#define __LINUX_USB_CH9_H
+
+#include <linux/types.h> /* __u8 etc */
+
+/*-------------------------------------------------------------------------*/
+
+/* CONTROL REQUEST SUPPORT */
+
+/*
+ * USB directions
+ *
+ * This bit flag is used in endpoint descriptors' bEndpointAddress field.
+ * It's also one of three fields in control requests bRequestType.
+ */
+#define USB_DIR_OUT 0 /* to device */
+#define USB_DIR_IN 0x80 /* to host */
+
+/*
+ * USB types, the second of three bRequestType fields
+ */
+#define USB_TYPE_MASK (0x03 << 5)
+#define USB_TYPE_STANDARD (0x00 << 5)
+#define USB_TYPE_CLASS (0x01 << 5)
+#define USB_TYPE_VENDOR (0x02 << 5)
+#define USB_TYPE_RESERVED (0x03 << 5)
+
+/*
+ * USB recipients, the third of three bRequestType fields
+ */
+#define USB_RECIP_MASK 0x1f
+#define USB_RECIP_DEVICE 0x00
+#define USB_RECIP_INTERFACE 0x01
+#define USB_RECIP_ENDPOINT 0x02
+#define USB_RECIP_OTHER 0x03
+/* From Wireless USB 1.0 */
+#define USB_RECIP_PORT 0x04
+#define USB_RECIP_RPIPE 0x05
+
+/*
+ * Standard requests, for the bRequest field of a SETUP packet.
+ *
+ * These are qualified by the bRequestType field, so that for example
+ * TYPE_CLASS or TYPE_VENDOR specific feature flags could be retrieved
+ * by a GET_STATUS request.
+ */
+#define USB_REQ_GET_STATUS 0x00
+#define USB_REQ_CLEAR_FEATURE 0x01
+#define USB_REQ_SET_FEATURE 0x03
+#define USB_REQ_SET_ADDRESS 0x05
+#define USB_REQ_GET_DESCRIPTOR 0x06
+#define USB_REQ_SET_DESCRIPTOR 0x07
+#define USB_REQ_GET_CONFIGURATION 0x08
+#define USB_REQ_SET_CONFIGURATION 0x09
+#define USB_REQ_GET_INTERFACE 0x0A
+#define USB_REQ_SET_INTERFACE 0x0B
+#define USB_REQ_SYNCH_FRAME 0x0C
+
+#define USB_REQ_SET_ENCRYPTION 0x0D /* Wireless USB */
+#define USB_REQ_GET_ENCRYPTION 0x0E
+#define USB_REQ_RPIPE_ABORT 0x0E
+#define USB_REQ_SET_HANDSHAKE 0x0F
+#define USB_REQ_RPIPE_RESET 0x0F
+#define USB_REQ_GET_HANDSHAKE 0x10
+#define USB_REQ_SET_CONNECTION 0x11
+#define USB_REQ_SET_SECURITY_DATA 0x12
+#define USB_REQ_GET_SECURITY_DATA 0x13
+#define USB_REQ_SET_WUSB_DATA 0x14
+#define USB_REQ_LOOPBACK_DATA_WRITE 0x15
+#define USB_REQ_LOOPBACK_DATA_READ 0x16
+#define USB_REQ_SET_INTERFACE_DS 0x17
+
+/*
+ * USB feature flags are written using USB_REQ_{CLEAR,SET}_FEATURE, and
+ * are read as a bit array returned by USB_REQ_GET_STATUS. (So there
+ * are at most sixteen features of each type.)
+ */
+#define USB_DEVICE_SELF_POWERED 0 /* (read only) */
+#define USB_DEVICE_REMOTE_WAKEUP 1 /* dev may initiate wakeup */
+#define USB_DEVICE_TEST_MODE 2 /* (wired high speed only) */
+#define USB_DEVICE_BATTERY 2 /* (wireless) */
+#define USB_DEVICE_B_HNP_ENABLE 3 /* (otg) dev may initiate HNP */
+#define USB_DEVICE_WUSB_DEVICE 3 /* (wireless)*/
+#define USB_DEVICE_A_HNP_SUPPORT 4 /* (otg) RH port supports HNP */
+#define USB_DEVICE_A_ALT_HNP_SUPPORT 5 /* (otg) other RH port does */
+#define USB_DEVICE_DEBUG_MODE 6 /* (special devices only) */
+
+#define USB_ENDPOINT_HALT 0 /* IN/OUT will STALL */
+
+
+/**
+ * struct usb_ctrlrequest - SETUP data for a USB device control request
+ * @bRequestType: matches the USB bmRequestType field
+ * @bRequest: matches the USB bRequest field
+ * @wValue: matches the USB wValue field (le16 byte order)
+ * @wIndex: matches the USB wIndex field (le16 byte order)
+ * @wLength: matches the USB wLength field (le16 byte order)
+ *
+ * This structure is used to send control requests to a USB device. It matches
+ * the different fields of the USB 2.0 Spec section 9.3, table 9-2. See the
+ * USB spec for a fuller description of the different fields, and what they are
+ * used for.
+ *
+ * Note that the driver for any interface can issue control requests.
+ * For most devices, interfaces don't coordinate with each other, so
+ * such requests may be made at any time.
+ */
+#if defined(__BIG_ENDIAN) || defined(__ARMEB__)
+#error (functionality not verified for big endian targets, todo...)
+#endif
+
+struct usb_ctrlrequest {
+ __u8 bRequestType;
+ __u8 bRequest;
+ __le16 wValue;
+ __le16 wIndex;
+ __le16 wLength;
+} __attribute__ ((packed));
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * STANDARD DESCRIPTORS ... as returned by GET_DESCRIPTOR, or
+ * (rarely) accepted by SET_DESCRIPTOR.
+ *
+ * Note that all multi-byte values here are encoded in little endian
+ * byte order "on the wire". But when exposed through Linux-USB APIs,
+ * they've been converted to cpu byte order.
+ */
+
+/*
+ * Descriptor types ... USB 2.0 spec table 9.5
+ */
+#define USB_DT_DEVICE 0x01
+#define USB_DT_CONFIG 0x02
+#define USB_DT_STRING 0x03
+#define USB_DT_INTERFACE 0x04
+#define USB_DT_ENDPOINT 0x05
+#define USB_DT_DEVICE_QUALIFIER 0x06
+#define USB_DT_OTHER_SPEED_CONFIG 0x07
+#define USB_DT_INTERFACE_POWER 0x08
+/* these are from a minor usb 2.0 revision (ECN) */
+#define USB_DT_OTG 0x09
+#define USB_DT_DEBUG 0x0a
+#define USB_DT_INTERFACE_ASSOCIATION 0x0b
+/* these are from the Wireless USB spec */
+#define USB_DT_SECURITY 0x0c
+#define USB_DT_KEY 0x0d
+#define USB_DT_ENCRYPTION_TYPE 0x0e
+#define USB_DT_BOS 0x0f
+#define USB_DT_DEVICE_CAPABILITY 0x10
+#define USB_DT_WIRELESS_ENDPOINT_COMP 0x11
+#define USB_DT_WIRE_ADAPTER 0x21
+#define USB_DT_RPIPE 0x22
+
+/* Conventional codes for class-specific descriptors. The convention is
+ * defined in the USB "Common Class" Spec (3.11). Individual class specs
+ * are authoritative for their usage, not the "common class" writeup.
+ */
+#define USB_DT_CS_DEVICE (USB_TYPE_CLASS | USB_DT_DEVICE)
+#define USB_DT_CS_CONFIG (USB_TYPE_CLASS | USB_DT_CONFIG)
+#define USB_DT_CS_STRING (USB_TYPE_CLASS | USB_DT_STRING)
+#define USB_DT_CS_INTERFACE (USB_TYPE_CLASS | USB_DT_INTERFACE)
+#define USB_DT_CS_ENDPOINT (USB_TYPE_CLASS | USB_DT_ENDPOINT)
+
+/* All standard descriptors have these 2 fields at the beginning */
+struct usb_descriptor_header {
+ __u8 bLength;
+ __u8 bDescriptorType;
+} __attribute__ ((packed));
+
+
+/*-------------------------------------------------------------------------*/
+
+/* USB_DT_DEVICE: Device descriptor */
+struct usb_device_descriptor {
+ __u8 bLength;
+ __u8 bDescriptorType;
+
+ __le16 bcdUSB;
+ __u8 bDeviceClass;
+ __u8 bDeviceSubClass;
+ __u8 bDeviceProtocol;
+ __u8 bMaxPacketSize0;
+ __le16 idVendor;
+ __le16 idProduct;
+ __le16 bcdDevice;
+ __u8 iManufacturer;
+ __u8 iProduct;
+ __u8 iSerialNumber;
+ __u8 bNumConfigurations;
+} __attribute__ ((packed));
+
+#define USB_DT_DEVICE_SIZE 18
+
+
+/*
+ * Device and/or Interface Class codes
+ * as found in bDeviceClass or bInterfaceClass
+ * and defined by www.usb.org documents
+ */
+#define USB_CLASS_PER_INTERFACE 0 /* for DeviceClass */
+#define USB_CLASS_AUDIO 1
+#define USB_CLASS_COMM 2
+#define USB_CLASS_HID 3
+#define USB_CLASS_PHYSICAL 5
+#define USB_CLASS_STILL_IMAGE 6
+#define USB_CLASS_PRINTER 7
+#define USB_CLASS_MASS_STORAGE 8
+#define USB_CLASS_HUB 9
+#define USB_CLASS_CDC_DATA 0x0a
+#define USB_CLASS_CSCID 0x0b /* chip+ smart card */
+#define USB_CLASS_CONTENT_SEC 0x0d /* content security */
+#define USB_CLASS_VIDEO 0x0e
+#define USB_CLASS_WIRELESS_CONTROLLER 0xe0
+#define USB_CLASS_MISC 0xef
+#define USB_CLASS_APP_SPEC 0xfe
+#define USB_CLASS_VENDOR_SPEC 0xff
+
+/*-------------------------------------------------------------------------*/
+
+/* USB_DT_CONFIG: Configuration descriptor information.
+ *
+ * USB_DT_OTHER_SPEED_CONFIG is the same descriptor, except that the
+ * descriptor type is different. Highspeed-capable devices can look
+ * different depending on what speed they're currently running. Only
+ * devices with a USB_DT_DEVICE_QUALIFIER have any OTHER_SPEED_CONFIG
+ * descriptors.
+ */
+struct usb_config_descriptor {
+ __u8 bLength;
+ __u8 bDescriptorType;
+
+ __le16 wTotalLength;
+ __u8 bNumInterfaces;
+ __u8 bConfigurationValue;
+ __u8 iConfiguration;
+ __u8 bmAttributes;
+ __u8 bMaxPower;
+} __attribute__ ((packed));
+
+#define USB_DT_CONFIG_SIZE 9
+
+/* from config descriptor bmAttributes */
+#define USB_CONFIG_ATT_ONE (1 << 7) /* must be set */
+#define USB_CONFIG_ATT_SELFPOWER (1 << 6) /* self powered */
+#define USB_CONFIG_ATT_WAKEUP (1 << 5) /* can wakeup */
+#define USB_CONFIG_ATT_BATTERY (1 << 4) /* battery powered */
+
+/*-------------------------------------------------------------------------*/
+
+/* USB_DT_STRING: String descriptor */
+struct usb_string_descriptor {
+ __u8 bLength;
+ __u8 bDescriptorType;
+
+ __le16 wData[1]; /* UTF-16LE encoded */
+} __attribute__ ((packed));
+
+/* note that "string" zero is special, it holds language codes that
+ * the device supports, not Unicode characters.
+ */
+
+/*-------------------------------------------------------------------------*/
+
+/* USB_DT_INTERFACE: Interface descriptor */
+struct usb_interface_descriptor {
+ __u8 bLength;
+ __u8 bDescriptorType;
+
+ __u8 bInterfaceNumber;
+ __u8 bAlternateSetting;
+ __u8 bNumEndpoints;
+ __u8 bInterfaceClass;
+ __u8 bInterfaceSubClass;
+ __u8 bInterfaceProtocol;
+ __u8 iInterface;
+} __attribute__ ((packed));
+
+#define USB_DT_INTERFACE_SIZE 9
+
+/*-------------------------------------------------------------------------*/
+
+/* USB_DT_ENDPOINT: Endpoint descriptor */
+struct usb_endpoint_descriptor {
+ __u8 bLength;
+ __u8 bDescriptorType;
+
+ __u8 bEndpointAddress;
+ __u8 bmAttributes;
+ __le16 wMaxPacketSize;
+ __u8 bInterval;
+
+ /* NOTE: these two are _only_ in audio endpoints. */
+ /* use USB_DT_ENDPOINT*_SIZE in bLength, not sizeof. */
+ __u8 bRefresh;
+ __u8 bSynchAddress;
+} __attribute__ ((packed));
+
+#define USB_DT_ENDPOINT_SIZE 7
+#define USB_DT_ENDPOINT_AUDIO_SIZE 9 /* Audio extension */
+
+
+/*
+ * Endpoints
+ */
+#define USB_ENDPOINT_NUMBER_MASK 0x0f /* in bEndpointAddress */
+#define USB_ENDPOINT_DIR_MASK 0x80
+
+#define USB_ENDPOINT_XFERTYPE_MASK 0x03 /* in bmAttributes */
+#define USB_ENDPOINT_XFER_CONTROL 0
+#define USB_ENDPOINT_XFER_ISOC 1
+#define USB_ENDPOINT_XFER_BULK 2
+#define USB_ENDPOINT_XFER_INT 3
+#define USB_ENDPOINT_MAX_ADJUSTABLE 0x80
+
+
+/*-------------------------------------------------------------------------*/
+
+/* USB_DT_DEVICE_QUALIFIER: Device Qualifier descriptor */
+struct usb_qualifier_descriptor {
+ __u8 bLength;
+ __u8 bDescriptorType;
+
+ __le16 bcdUSB;
+ __u8 bDeviceClass;
+ __u8 bDeviceSubClass;
+ __u8 bDeviceProtocol;
+ __u8 bMaxPacketSize0;
+ __u8 bNumConfigurations;
+ __u8 bRESERVED;
+} __attribute__ ((packed));
+
+
+/*-------------------------------------------------------------------------*/
+
+/* USB_DT_OTG (from OTG 1.0a supplement) */
+struct usb_otg_descriptor {
+ __u8 bLength;
+ __u8 bDescriptorType;
+
+ __u8 bmAttributes; /* support for HNP, SRP, etc */
+} __attribute__ ((packed));
+
+/* from usb_otg_descriptor.bmAttributes */
+#define USB_OTG_SRP (1 << 0)
+#define USB_OTG_HNP (1 << 1) /* swap host/device roles */
+
+/*-------------------------------------------------------------------------*/
+
+/* USB_DT_DEBUG: for special highspeed devices, replacing serial console */
+struct usb_debug_descriptor {
+ __u8 bLength;
+ __u8 bDescriptorType;
+
+ /* bulk endpoints with 8 byte maxpacket */
+ __u8 bDebugInEndpoint;
+ __u8 bDebugOutEndpoint;
+} __attribute__((packed));
+
+/*-------------------------------------------------------------------------*/
+
+/* USB_DT_INTERFACE_ASSOCIATION: groups interfaces */
+struct usb_interface_assoc_descriptor {
+ __u8 bLength;
+ __u8 bDescriptorType;
+
+ __u8 bFirstInterface;
+ __u8 bInterfaceCount;
+ __u8 bFunctionClass;
+ __u8 bFunctionSubClass;
+ __u8 bFunctionProtocol;
+ __u8 iFunction;
+} __attribute__ ((packed));
+
+
+/*-------------------------------------------------------------------------*/
+
+/* USB_DT_SECURITY: group of wireless security descriptors, including
+ * encryption types available for setting up a CC/association.
+ */
+struct usb_security_descriptor {
+ __u8 bLength;
+ __u8 bDescriptorType;
+
+ __le16 wTotalLength;
+ __u8 bNumEncryptionTypes;
+} __attribute__((packed));
+
+/*-------------------------------------------------------------------------*/
+
+/* USB_DT_KEY: used with {GET,SET}_SECURITY_DATA; only public keys
+ * may be retrieved.
+ */
+struct usb_key_descriptor {
+ __u8 bLength;
+ __u8 bDescriptorType;
+
+ __u8 tTKID[3];
+ __u8 bReserved;
+ __u8 bKeyData[0];
+} __attribute__((packed));
+
+/*-------------------------------------------------------------------------*/
+
+/* USB_DT_ENCRYPTION_TYPE: bundled in DT_SECURITY groups */
+struct usb_encryption_descriptor {
+ __u8 bLength;
+ __u8 bDescriptorType;
+
+ __u8 bEncryptionType;
+#define USB_ENC_TYPE_UNSECURE 0
+#define USB_ENC_TYPE_WIRED 1 /* non-wireless mode */
+#define USB_ENC_TYPE_CCM_1 2 /* aes128/cbc session */
+#define USB_ENC_TYPE_RSA_1 3 /* rsa3072/sha1 auth */
+ __u8 bEncryptionValue; /* use in SET_ENCRYPTION */
+ __u8 bAuthKeyIndex;
+} __attribute__((packed));
+
+
+/*-------------------------------------------------------------------------*/
+
+/* USB_DT_BOS: group of wireless capabilities */
+struct usb_bos_descriptor {
+ __u8 bLength;
+ __u8 bDescriptorType;
+
+ __le16 wTotalLength;
+ __u8 bNumDeviceCaps;
+} __attribute__((packed));
+
+/*-------------------------------------------------------------------------*/
+
+/* USB_DT_DEVICE_CAPABILITY: grouped with BOS */
+struct usb_dev_cap_header {
+ __u8 bLength;
+ __u8 bDescriptorType;
+ __u8 bDevCapabilityType;
+} __attribute__((packed));
+
+#define USB_CAP_TYPE_WIRELESS_USB 1
+
+struct usb_wireless_cap_descriptor { /* Ultra Wide Band */
+ __u8 bLength;
+ __u8 bDescriptorType;
+ __u8 bDevCapabilityType;
+
+ __u8 bmAttributes;
+#define USB_WIRELESS_P2P_DRD (1 << 1)
+#define USB_WIRELESS_BEACON_MASK (3 << 2)
+#define USB_WIRELESS_BEACON_SELF (1 << 2)
+#define USB_WIRELESS_BEACON_DIRECTED (2 << 2)
+#define USB_WIRELESS_BEACON_NONE (3 << 2)
+ __le16 wPHYRates; /* bit rates, Mbps */
+#define USB_WIRELESS_PHY_53 (1 << 0) /* always set */
+#define USB_WIRELESS_PHY_80 (1 << 1)
+#define USB_WIRELESS_PHY_107 (1 << 2) /* always set */
+#define USB_WIRELESS_PHY_160 (1 << 3)
+#define USB_WIRELESS_PHY_200 (1 << 4) /* always set */
+#define USB_WIRELESS_PHY_320 (1 << 5)
+#define USB_WIRELESS_PHY_400 (1 << 6)
+#define USB_WIRELESS_PHY_480 (1 << 7)
+ __u8 bmTFITXPowerInfo; /* TFI power levels */
+ __u8 bmFFITXPowerInfo; /* FFI power levels */
+ __le16 bmBandGroup;
+ __u8 bReserved;
+} __attribute__((packed));
+
+/*-------------------------------------------------------------------------*/
+
+/* USB_DT_WIRELESS_ENDPOINT_COMP: companion descriptor associated with
+ * each endpoint descriptor for a wireless device
+ */
+struct usb_wireless_ep_comp_descriptor {
+ __u8 bLength;
+ __u8 bDescriptorType;
+
+ __u8 bMaxBurst;
+ __u8 bMaxSequence;
+ __le16 wMaxStreamDelay;
+ __le16 wOverTheAirPacketSize;
+ __u8 bOverTheAirInterval;
+ __u8 bmCompAttributes;
+#define USB_ENDPOINT_SWITCH_MASK 0x03 /* in bmCompAttributes */
+#define USB_ENDPOINT_SWITCH_NO 0
+#define USB_ENDPOINT_SWITCH_SWITCH 1
+#define USB_ENDPOINT_SWITCH_SCALE 2
+} __attribute__((packed));
+
+/*-------------------------------------------------------------------------*/
+
+/* USB_REQ_SET_HANDSHAKE is a four-way handshake used between a wireless
+ * host and a device for connection set up, mutual authentication, and
+ * exchanging short lived session keys. The handshake depends on a CC.
+ */
+struct usb_handshake {
+ __u8 bMessageNumber;
+ __u8 bStatus;
+ __u8 tTKID[3];
+ __u8 bReserved;
+ __u8 CDID[16];
+ __u8 nonce[16];
+ __u8 MIC[8];
+} __attribute__((packed));
+
+/*-------------------------------------------------------------------------*/
+
+/* USB_REQ_SET_CONNECTION modifies or revokes a connection context (CC).
+ * A CC may also be set up using non-wireless secure channels (including
+ * wired USB!), and some devices may support CCs with multiple hosts.
+ */
+struct usb_connection_context {
+ __u8 CHID[16]; /* persistent host id */
+ __u8 CDID[16]; /* device id (unique w/in host context) */
+ __u8 CK[16]; /* connection key */
+} __attribute__((packed));
+
+/*-------------------------------------------------------------------------*/
+
+/* USB 2.0 defines three speeds, here's how Linux identifies them */
+
+enum usb_device_speed {
+ USB_SPEED_UNKNOWN = 0, /* enumerating */
+ USB_SPEED_LOW, USB_SPEED_FULL, /* usb 1.1 */
+ USB_SPEED_HIGH, /* usb 2.0 */
+ USB_SPEED_VARIABLE, /* wireless (usb 2.5) */
+};
+
+enum usb_device_state {
+ /* NOTATTACHED isn't in the USB spec, and this state acts
+ * the same as ATTACHED ... but it's clearer this way.
+ */
+ USB_STATE_NOTATTACHED = 0,
+
+ /* chapter 9 and authentication (wireless) device states */
+ USB_STATE_ATTACHED,
+ USB_STATE_POWERED, /* wired */
+ USB_STATE_UNAUTHENTICATED, /* auth */
+ USB_STATE_RECONNECTING, /* auth */
+ USB_STATE_DEFAULT, /* limited function */
+ USB_STATE_ADDRESS,
+ USB_STATE_CONFIGURED, /* most functions */
+
+ USB_STATE_SUSPENDED
+
+ /* NOTE: there are actually four different SUSPENDED
+ * states, returning to POWERED, DEFAULT, ADDRESS, or
+ * CONFIGURED respectively when SOF tokens flow again.
+ */
+};
+
+#endif /* __LINUX_USB_CH9_H */
diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h
new file mode 100644
index 0000000..344fc78
--- /dev/null
+++ b/include/linux/usb/gadget.h
@@ -0,0 +1,871 @@
+/*
+ * <linux/usb/gadget.h>
+ *
+ * We call the USB code inside a Linux-based peripheral device a "gadget"
+ * driver, except for the hardware-specific bus glue. One USB host can
+ * master many USB gadgets, but the gadgets are only slaved to one host.
+ *
+ *
+ * (C) Copyright 2002-2004 by David Brownell
+ * All Rights Reserved.
+ *
+ * This software is licensed under the GNU GPL version 2.
+ *
+ * Ported to U-boot by: Thomas Smits <ts.smits at gmail.com> and
+ * Remy Bohmer <linux at bohmer.net>
+ */
+
+#ifndef __LINUX_USB_GADGET_H
+#define __LINUX_USB_GADGET_H
+
+#include <linux/list.h>
+
+struct usb_ep;
+
+/**
+ * struct usb_request - describes one i/o request
+ * @buf: Buffer used for data. Always provide this; some controllers
+ * only use PIO, or don't use DMA for some endpoints.
+ * @dma: DMA address corresponding to 'buf'. If you don't set this
+ * field, and the usb controller needs one, it is responsible
+ * for mapping and unmapping the buffer.
+ * @length: Length of that data
+ * @no_interrupt: If true, hints that no completion irq is needed.
+ * Helpful sometimes with deep request queues that are handled
+ * directly by DMA controllers.
+ * @zero: If true, when writing data, makes the last packet be "short"
+ * by adding a zero length packet as needed;
+ * @short_not_ok: When reading data, makes short packets be
+ * treated as errors (queue stops advancing till cleanup).
+ * @complete: Function called when request completes, so this request and
+ * its buffer may be re-used.
+ * Reads terminate with a short packet, or when the buffer fills,
+ * whichever comes first. When writes terminate, some data bytes
+ * will usually still be in flight (often in a hardware fifo).
+ * Errors (for reads or writes) stop the queue from advancing
+ * until the completion function returns, so that any transfers
+ * invalidated by the error may first be dequeued.
+ * @context: For use by the completion callback
+ * @list: For use by the gadget driver.
+ * @status: Reports completion code, zero or a negative errno.
+ * Normally, faults block the transfer queue from advancing until
+ * the completion callback returns.
+ * Code "-ESHUTDOWN" indicates completion caused by device disconnect,
+ * or when the driver disabled the endpoint.
+ * @actual: Reports bytes transferred to/from the buffer. For reads (OUT
+ * transfers) this may be less than the requested length. If the
+ * short_not_ok flag is set, short reads are treated as errors
+ * even when status otherwise indicates successful completion.
+ * Note that for writes (IN transfers) some data bytes may still
+ * reside in a device-side FIFO when the request is reported as
+ * complete.
+ *
+ * These are allocated/freed through the endpoint they're used with. The
+ * hardware's driver can add extra per-request data to the memory it returns,
+ * which often avoids separate memory allocations (potential failures),
+ * later when the request is queued.
+ *
+ * Request flags affect request handling, such as whether a zero length
+ * packet is written (the "zero" flag), whether a short read should be
+ * treated as an error (blocking request queue advance, the "short_not_ok"
+ * flag), or hinting that an interrupt is not required (the "no_interrupt"
+ * flag, for use with deep request queues).
+ *
+ * Bulk endpoints can use any size buffers, and can also be used for interrupt
+ * transfers. interrupt-only endpoints can be much less functional.
+ */
+ // NOTE this is analagous to 'struct urb' on the host side,
+ // except that it's thinner and promotes more pre-allocation.
+
+struct usb_request {
+ void *buf;
+ unsigned length;
+ dma_addr_t dma;
+
+ unsigned no_interrupt:1;
+ unsigned zero:1;
+ unsigned short_not_ok:1;
+
+ void (*complete)(struct usb_ep *ep,
+ struct usb_request *req);
+ void *context;
+ struct list_head list;
+
+ int status;
+ unsigned actual;
+};
+
+/*-------------------------------------------------------------------------*/
+
+/* endpoint-specific parts of the api to the usb controller hardware.
+ * unlike the urb model, (de)multiplexing layers are not required.
+ * (so this api could slash overhead if used on the host side...)
+ *
+ * note that device side usb controllers commonly differ in how many
+ * endpoints they support, as well as their capabilities.
+ */
+struct usb_ep_ops {
+ int (*enable) (struct usb_ep *ep,
+ const struct usb_endpoint_descriptor *desc);
+ int (*disable) (struct usb_ep *ep);
+
+ struct usb_request *(*alloc_request) (struct usb_ep *ep,
+ gfp_t gfp_flags);
+ void (*free_request) (struct usb_ep *ep, struct usb_request *req);
+
+ int (*queue) (struct usb_ep *ep, struct usb_request *req,
+ gfp_t gfp_flags);
+ int (*dequeue) (struct usb_ep *ep, struct usb_request *req);
+
+ int (*set_halt) (struct usb_ep *ep, int value);
+ int (*fifo_status) (struct usb_ep *ep);
+ void (*fifo_flush) (struct usb_ep *ep);
+};
+
+/**
+ * struct usb_ep - device side representation of USB endpoint
+ * @name:identifier for the endpoint, such as "ep-a" or "ep9in-bulk"
+ * @ops: Function pointers used to access hardware-specific operations.
+ * @ep_list:the gadget's ep_list holds all of its endpoints
+ * @maxpacket:The maximum packet size used on this endpoint. The initial
+ * value can sometimes be reduced (hardware allowing), according to
+ * the endpoint descriptor used to configure the endpoint.
+ * @driver_data:for use by the gadget driver. all other fields are
+ * read-only to gadget drivers.
+ *
+ * the bus controller driver lists all the general purpose endpoints in
+ * gadget->ep_list. the control endpoint (gadget->ep0) is not in that list,
+ * and is accessed only in response to a driver setup() callback.
+ */
+struct usb_ep {
+ void *driver_data;
+ const char *name;
+ const struct usb_ep_ops *ops;
+ struct list_head ep_list;
+ unsigned maxpacket:16;
+};
+
+/*-------------------------------------------------------------------------*/
+
+/**
+ * usb_ep_enable - configure endpoint, making it usable
+ * @ep:the endpoint being configured. may not be the endpoint named "ep0".
+ * drivers discover endpoints through the ep_list of a usb_gadget.
+ * @desc:descriptor for desired behavior. caller guarantees this pointer
+ * remains valid until the endpoint is disabled; the data byte order
+ * is little-endian (usb-standard).
+ *
+ * when configurations are set, or when interface settings change, the driver
+ * will enable or disable the relevant endpoints. while it is enabled, an
+ * endpoint may be used for i/o until the driver receives a disconnect() from
+ * the host or until the endpoint is disabled.
+ *
+ * the ep0 implementation (which calls this routine) must ensure that the
+ * hardware capabilities of each endpoint match the descriptor provided
+ * for it. for example, an endpoint named "ep2in-bulk" would be usable
+ * for interrupt transfers as well as bulk, but it likely couldn't be used
+ * for iso transfers or for endpoint 14. some endpoints are fully
+ * configurable, with more generic names like "ep-a". (remember that for
+ * USB, "in" means "towards the USB master".)
+ *
+ * returns zero, or a negative error code.
+ */
+static inline int
+usb_ep_enable (struct usb_ep *ep, const struct usb_endpoint_descriptor *desc)
+{
+ return ep->ops->enable (ep, desc);
+}
+
+/**
+ * usb_ep_disable - endpoint is no longer usable
+ * @ep:the endpoint being unconfigured. may not be the endpoint named "ep0".
+ *
+ * no other task may be using this endpoint when this is called.
+ * any pending and uncompleted requests will complete with status
+ * indicating disconnect (-ESHUTDOWN) before this call returns.
+ * gadget drivers must call usb_ep_enable() again before queueing
+ * requests to the endpoint.
+ *
+ * returns zero, or a negative error code.
+ */
+static inline int
+usb_ep_disable (struct usb_ep *ep)
+{
+ return ep->ops->disable (ep);
+}
+
+/**
+ * usb_ep_alloc_request - allocate a request object to use with this endpoint
+ * @ep:the endpoint to be used with with the request
+ * @gfp_flags:GFP_* flags to use
+ *
+ * Request objects must be allocated with this call, since they normally
+ * need controller-specific setup and may even need endpoint-specific
+ * resources such as allocation of DMA descriptors.
+ * Requests may be submitted with usb_ep_queue(), and receive a single
+ * completion callback. Free requests with usb_ep_free_request(), when
+ * they are no longer needed.
+ *
+ * Returns the request, or null if one could not be allocated.
+ */
+static inline struct usb_request *
+usb_ep_alloc_request (struct usb_ep *ep, gfp_t gfp_flags)
+{
+ return ep->ops->alloc_request (ep, gfp_flags);
+}
+
+/**
+ * usb_ep_free_request - frees a request object
+ * @ep:the endpoint associated with the request
+ * @req:the request being freed
+ *
+ * Reverses the effect of usb_ep_alloc_request().
+ * Caller guarantees the request is not queued, and that it will
+ * no longer be requeued (or otherwise used).
+ */
+static inline void
+usb_ep_free_request (struct usb_ep *ep, struct usb_request *req)
+{
+ ep->ops->free_request (ep, req);
+}
+
+/**
+ * usb_ep_queue - queues (submits) an I/O request to an endpoint.
+ * @ep:the endpoint associated with the request
+ * @req:the request being submitted
+ * @gfp_flags: GFP_* flags to use in case the lower level driver couldn't
+ * pre-allocate all necessary memory with the request.
+ *
+ * This tells the device controller to perform the specified request through
+ * that endpoint (reading or writing a buffer). When the request completes,
+ * including being canceled by usb_ep_dequeue(), the request's completion
+ * routine is called to return the request to the driver. Any endpoint
+ * (except control endpoints like ep0) may have more than one transfer
+ * request queued; they complete in FIFO order. Once a gadget driver
+ * submits a request, that request may not be examined or modified until it
+ * is given back to that driver through the completion callback.
+ *
+ * Each request is turned into one or more packets. The controller driver
+ * never merges adjacent requests into the same packet. OUT transfers
+ * will sometimes use data that's already buffered in the hardware.
+ * Drivers can rely on the fact that the first byte of the request's buffer
+ * always corresponds to the first byte of some USB packet, for both
+ * IN and OUT transfers.
+ *
+ * Bulk endpoints can queue any amount of data; the transfer is packetized
+ * automatically. The last packet will be short if the request doesn't fill it
+ * out completely. Zero length packets (ZLPs) should be avoided in portable
+ * protocols since not all usb hardware can successfully handle zero length
+ * packets. (ZLPs may be explicitly written, and may be implicitly written if
+ * the request 'zero' flag is set.) Bulk endpoints may also be used
+ * for interrupt transfers; but the reverse is not true, and some endpoints
+ * won't support every interrupt transfer. (Such as 768 byte packets.)
+ *
+ * Interrupt-only endpoints are less functional than bulk endpoints, for
+ * example by not supporting queueing or not handling buffers that are
+ * larger than the endpoint's maxpacket size. They may also treat data
+ * toggle differently.
+ *
+ * Control endpoints ... after getting a setup() callback, the driver queues
+ * one response (even if it would be zero length). That enables the
+ * status ack, after transfering data as specified in the response. Setup
+ * functions may return negative error codes to generate protocol stalls.
+ * (Note that some USB device controllers disallow protocol stall responses
+ * in some cases.) When control responses are deferred (the response is
+ * written after the setup callback returns), then usb_ep_set_halt() may be
+ * used on ep0 to trigger protocol stalls.
+ *
+ * For periodic endpoints, like interrupt or isochronous ones, the usb host
+ * arranges to poll once per interval, and the gadget driver usually will
+ * have queued some data to transfer at that time.
+ *
+ * Returns zero, or a negative error code. Endpoints that are not enabled
+ * report errors; errors will also be
+ * reported when the usb peripheral is disconnected.
+ */
+static inline int
+usb_ep_queue (struct usb_ep *ep, struct usb_request *req, gfp_t gfp_flags)
+{
+ return ep->ops->queue (ep, req, gfp_flags);
+}
+
+/**
+ * usb_ep_dequeue - dequeues (cancels, unlinks) an I/O request from an endpoint
+ * @ep:the endpoint associated with the request
+ * @req:the request being canceled
+ *
+ * if the request is still active on the endpoint, it is dequeued and its
+ * completion routine is called (with status -ECONNRESET); else a negative
+ * error code is returned.
+ *
+ * note that some hardware can't clear out write fifos (to unlink the request
+ * at the head of the queue) except as part of disconnecting from usb. such
+ * restrictions prevent drivers from supporting configuration changes,
+ * even to configuration zero (a "chapter 9" requirement).
+ */
+static inline int usb_ep_dequeue (struct usb_ep *ep, struct usb_request *req)
+{
+ return ep->ops->dequeue (ep, req);
+}
+
+/**
+ * usb_ep_set_halt - sets the endpoint halt feature.
+ * @ep: the non-isochronous endpoint being stalled
+ *
+ * Use this to stall an endpoint, perhaps as an error report.
+ * Except for control endpoints,
+ * the endpoint stays halted (will not stream any data) until the host
+ * clears this feature; drivers may need to empty the endpoint's request
+ * queue first, to make sure no inappropriate transfers happen.
+ *
+ * Note that while an endpoint CLEAR_FEATURE will be invisible to the
+ * gadget driver, a SET_INTERFACE will not be. To reset endpoints for the
+ * current altsetting, see usb_ep_clear_halt(). When switching altsettings,
+ * it's simplest to use usb_ep_enable() or usb_ep_disable() for the endpoints.
+ *
+ * Returns zero, or a negative error code. On success, this call sets
+ * underlying hardware state that blocks data transfers.
+ * Attempts to halt IN endpoints will fail (returning -EAGAIN) if any
+ * transfer requests are still queued, or if the controller hardware
+ * (usually a FIFO) still holds bytes that the host hasn't collected.
+ */
+static inline int
+usb_ep_set_halt (struct usb_ep *ep)
+{
+ return ep->ops->set_halt (ep, 1);
+}
+
+/**
+ * usb_ep_clear_halt - clears endpoint halt, and resets toggle
+ * @ep:the bulk or interrupt endpoint being reset
+ *
+ * Use this when responding to the standard usb "set interface" request,
+ * for endpoints that aren't reconfigured, after clearing any other state
+ * in the endpoint's i/o queue.
+ *
+ * Returns zero, or a negative error code. On success, this call clears
+ * the underlying hardware state reflecting endpoint halt and data toggle.
+ * Note that some hardware can't support this request (like pxa2xx_udc),
+ * and accordingly can't correctly implement interface altsettings.
+ */
+static inline int
+usb_ep_clear_halt (struct usb_ep *ep)
+{
+ return ep->ops->set_halt (ep, 0);
+}
+
+/**
+ * usb_ep_fifo_status - returns number of bytes in fifo, or error
+ * @ep: the endpoint whose fifo status is being checked.
+ *
+ * FIFO endpoints may have "unclaimed data" in them in certain cases,
+ * such as after aborted transfers. Hosts may not have collected all
+ * the IN data written by the gadget driver (and reported by a request
+ * completion). The gadget driver may not have collected all the data
+ * written OUT to it by the host. Drivers that need precise handling for
+ * fault reporting or recovery may need to use this call.
+ *
+ * This returns the number of such bytes in the fifo, or a negative
+ * errno if the endpoint doesn't use a FIFO or doesn't support such
+ * precise handling.
+ */
+static inline int
+usb_ep_fifo_status (struct usb_ep *ep)
+{
+ if (ep->ops->fifo_status)
+ return ep->ops->fifo_status (ep);
+ else
+ return -EOPNOTSUPP;
+}
+
+/**
+ * usb_ep_fifo_flush - flushes contents of a fifo
+ * @ep: the endpoint whose fifo is being flushed.
+ *
+ * This call may be used to flush the "unclaimed data" that may exist in
+ * an endpoint fifo after abnormal transaction terminations. The call
+ * must never be used except when endpoint is not being used for any
+ * protocol translation.
+ */
+static inline void
+usb_ep_fifo_flush (struct usb_ep *ep)
+{
+ if (ep->ops->fifo_flush)
+ ep->ops->fifo_flush (ep);
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+struct usb_gadget;
+
+/* the rest of the api to the controller hardware: device operations,
+ * which don't involve endpoints (or i/o).
+ */
+struct usb_gadget_ops {
+ int (*get_frame)(struct usb_gadget *);
+ int (*wakeup)(struct usb_gadget *);
+ int (*set_selfpowered) (struct usb_gadget *, int is_selfpowered);
+ int (*vbus_session) (struct usb_gadget *, int is_active);
+ int (*vbus_draw) (struct usb_gadget *, unsigned mA);
+ int (*pullup) (struct usb_gadget *, int is_on);
+ int (*ioctl)(struct usb_gadget *,
+ unsigned code, unsigned long param);
+};
+
+struct device {
+ void *driver_data; /* data private to the driver */
+};
+
+/**
+ * struct usb_gadget - represents a usb slave device
+ * @ops: Function pointers used to access hardware-specific operations.
+ * @ep0: Endpoint zero, used when reading or writing responses to
+ * driver setup() requests
+ * @ep_list: List of other endpoints supported by the device.
+ * @speed: Speed of current connection to USB host.
+ * @is_dualspeed: True if the controller supports both high and full speed
+ * operation. If it does, the gadget driver must also support both.
+ * @is_otg: True if the USB device port uses a Mini-AB jack, so that the
+ * gadget driver must provide a USB OTG descriptor.
+ * @is_a_peripheral: False unless is_otg, the "A" end of a USB cable
+ * is in the Mini-AB jack, and HNP has been used to switch roles
+ * so that the "A" device currently acts as A-Peripheral, not A-Host.
+ * @a_hnp_support: OTG device feature flag, indicating that the A-Host
+ * supports HNP at this port.
+ * @a_alt_hnp_support: OTG device feature flag, indicating that the A-Host
+ * only supports HNP on a different root port.
+ * @b_hnp_enable: OTG device feature flag, indicating that the A-Host
+ * enabled HNP support.
+ * @name: Identifies the controller hardware type. Used in diagnostics
+ * and sometimes configuration.
+ * @dev: Driver model state for this abstract device.
+ *
+ * Gadgets have a mostly-portable "gadget driver" implementing device
+ * functions, handling all usb configurations and interfaces. Gadget
+ * drivers talk to hardware-specific code indirectly, through ops vectors.
+ * That insulates the gadget driver from hardware details, and packages
+ * the hardware endpoints through generic i/o queues. The "usb_gadget"
+ * and "usb_ep" interfaces provide that insulation from the hardware.
+ *
+ * Except for the driver data, all fields in this structure are
+ * read-only to the gadget driver. That driver data is part of the
+ * "driver model" infrastructure in 2.6 (and later) kernels, and for
+ * earlier systems is grouped in a similar structure that's not known
+ * to the rest of the kernel.
+ *
+ * Values of the three OTG device feature flags are updated before the
+ * setup() call corresponding to USB_REQ_SET_CONFIGURATION, and before
+ * driver suspend() calls. They are valid only when is_otg, and when the
+ * device is acting as a B-Peripheral (so is_a_peripheral is false).
+ */
+struct usb_gadget {
+ /* readonly to gadget driver */
+ const struct usb_gadget_ops *ops;
+ struct usb_ep *ep0;
+ struct list_head ep_list; /* of usb_ep */
+ enum usb_device_speed speed;
+ unsigned is_dualspeed:1;
+ unsigned is_otg:1;
+ unsigned is_a_peripheral:1;
+ unsigned b_hnp_enable:1;
+ unsigned a_hnp_support:1;
+ unsigned a_alt_hnp_support:1;
+ const char *name;
+ struct device dev;
+};
+
+static inline void set_gadget_data (struct usb_gadget *gadget, void *data)
+{
+ gadget->dev.driver_data = data;
+}
+
+static inline void *get_gadget_data (struct usb_gadget *gadget)
+{
+ return gadget->dev.driver_data;
+}
+
+/* iterates the non-control endpoints; 'tmp' is a struct usb_ep pointer */
+#define gadget_for_each_ep(tmp,gadget) \
+ list_for_each_entry(tmp, &(gadget)->ep_list, ep_list)
+
+
+/**
+ * gadget_is_dualspeed - return true iff the hardware handles high speed
+ * @g: controller that might support both high and full speeds
+ */
+static inline int gadget_is_dualspeed(struct usb_gadget *g)
+{
+#ifdef CONFIG_USB_GADGET_DUALSPEED
+ /* runtime test would check "g->is_dualspeed" ... that might be
+ * useful to work around hardware bugs, but is mostly pointless
+ */
+ return 1;
+#else
+ return 0;
+#endif
+}
+
+/**
+ * gadget_is_otg - return true iff the hardware is OTG-ready
+ * @g: controller that might have a Mini-AB connector
+ *
+ * This is a runtime test, since kernels with a USB-OTG stack sometimes
+ * run on boards which only have a Mini-B (or Mini-A) connector.
+ */
+static inline int gadget_is_otg(struct usb_gadget *g)
+{
+#ifdef CONFIG_USB_OTG
+ return g->is_otg;
+#else
+ return 0;
+#endif
+}
+
+
+/**
+ * usb_gadget_frame_number - returns the current frame number
+ * @gadget: controller that reports the frame number
+ *
+ * Returns the usb frame number, normally eleven bits from a SOF packet,
+ * or negative errno if this device doesn't support this capability.
+ */
+static inline int usb_gadget_frame_number (struct usb_gadget *gadget)
+{
+ return gadget->ops->get_frame (gadget);
+}
+
+/**
+ * usb_gadget_wakeup - tries to wake up the host connected to this gadget
+ * @gadget: controller used to wake up the host
+ *
+ * Returns zero on success, else negative error code if the hardware
+ * doesn't support such attempts, or its support has not been enabled
+ * by the usb host. Drivers must return device descriptors that report
+ * their ability to support this, or hosts won't enable it.
+ *
+ * This may also try to use SRP to wake the host and start enumeration,
+ * even if OTG isn't otherwise in use. OTG devices may also start
+ * remote wakeup even when hosts don't explicitly enable it.
+ */
+static inline int usb_gadget_wakeup (struct usb_gadget *gadget)
+{
+ if (!gadget->ops->wakeup)
+ return -EOPNOTSUPP;
+ return gadget->ops->wakeup (gadget);
+}
+
+/**
+ * usb_gadget_set_selfpowered - sets the device selfpowered feature.
+ * @gadget:the device being declared as self-powered
+ *
+ * this affects the device status reported by the hardware driver
+ * to reflect that it now has a local power supply.
+ *
+ * returns zero on success, else negative errno.
+ */
+static inline int
+usb_gadget_set_selfpowered (struct usb_gadget *gadget)
+{
+ if (!gadget->ops->set_selfpowered)
+ return -EOPNOTSUPP;
+ return gadget->ops->set_selfpowered (gadget, 1);
+}
+
+/**
+ * usb_gadget_clear_selfpowered - clear the device selfpowered feature.
+ * @gadget:the device being declared as bus-powered
+ *
+ * this affects the device status reported by the hardware driver.
+ * some hardware may not support bus-powered operation, in which
+ * case this feature's value can never change.
+ *
+ * returns zero on success, else negative errno.
+ */
+static inline int
+usb_gadget_clear_selfpowered (struct usb_gadget *gadget)
+{
+ if (!gadget->ops->set_selfpowered)
+ return -EOPNOTSUPP;
+ return gadget->ops->set_selfpowered (gadget, 0);
+}
+
+/**
+ * usb_gadget_vbus_connect - Notify controller that VBUS is powered
+ * @gadget:The device which now has VBUS power.
+ *
+ * This call is used by a driver for an external transceiver (or GPIO)
+ * that detects a VBUS power session starting. Common responses include
+ * resuming the controller, activating the D+ (or D-) pullup to let the
+ * host detect that a USB device is attached, and starting to draw power
+ * (8mA or possibly more, especially after SET_CONFIGURATION).
+ *
+ * Returns zero on success, else negative errno.
+ */
+static inline int
+usb_gadget_vbus_connect(struct usb_gadget *gadget)
+{
+ if (!gadget->ops->vbus_session)
+ return -EOPNOTSUPP;
+ return gadget->ops->vbus_session (gadget, 1);
+}
+
+/**
+ * usb_gadget_vbus_draw - constrain controller's VBUS power usage
+ * @gadget:The device whose VBUS usage is being described
+ * @mA:How much current to draw, in milliAmperes. This should be twice
+ * the value listed in the configuration descriptor bMaxPower field.
+ *
+ * This call is used by gadget drivers during SET_CONFIGURATION calls,
+ * reporting how much power the device may consume. For example, this
+ * could affect how quickly batteries are recharged.
+ *
+ * Returns zero on success, else negative errno.
+ */
+static inline int
+usb_gadget_vbus_draw(struct usb_gadget *gadget, unsigned mA)
+{
+ if (!gadget->ops->vbus_draw)
+ return -EOPNOTSUPP;
+ return gadget->ops->vbus_draw (gadget, mA);
+}
+
+/**
+ * usb_gadget_vbus_disconnect - notify controller about VBUS session end
+ * @gadget:the device whose VBUS supply is being described
+ *
+ * This call is used by a driver for an external transceiver (or GPIO)
+ * that detects a VBUS power session ending. Common responses include
+ * reversing everything done in usb_gadget_vbus_connect().
+ *
+ * Returns zero on success, else negative errno.
+ */
+static inline int
+usb_gadget_vbus_disconnect(struct usb_gadget *gadget)
+{
+ if (!gadget->ops->vbus_session)
+ return -EOPNOTSUPP;
+ return gadget->ops->vbus_session (gadget, 0);
+}
+
+/**
+ * usb_gadget_connect - software-controlled connect to USB host
+ * @gadget:the peripheral being connected
+ *
+ * Enables the D+ (or potentially D-) pullup. The host will start
+ * enumerating this gadget when the pullup is active and a VBUS session
+ * is active (the link is powered). This pullup is always enabled unless
+ * usb_gadget_disconnect() has been used to disable it.
+ *
+ * Returns zero on success, else negative errno.
+ */
+static inline int
+usb_gadget_connect (struct usb_gadget *gadget)
+{
+ if (!gadget->ops->pullup)
+ return -EOPNOTSUPP;
+ return gadget->ops->pullup (gadget, 1);
+}
+
+/**
+ * usb_gadget_disconnect - software-controlled disconnect from USB host
+ * @gadget:the peripheral being disconnected
+ *
+ * Disables the D+ (or potentially D-) pullup, which the host may see
+ * as a disconnect (when a VBUS session is active). Not all systems
+ * support software pullup controls.
+ *
+ * This routine may be used during the gadget driver bind() call to prevent
+ * the peripheral from ever being visible to the USB host, unless later
+ * usb_gadget_connect() is called. For example, user mode components may
+ * need to be activated before the system can talk to hosts.
+ *
+ * Returns zero on success, else negative errno.
+ */
+static inline int
+usb_gadget_disconnect (struct usb_gadget *gadget)
+{
+ if (!gadget->ops->pullup)
+ return -EOPNOTSUPP;
+ return gadget->ops->pullup (gadget, 0);
+}
+
+
+
+/*-------------------------------------------------------------------------*/
+
+/**
+ * struct usb_gadget_driver - driver for usb 'slave' devices
+ * @speed: Highest speed the driver handles.
+ * @bind: Invoked when the driver is bound to a gadget, usually
+ * after registering the driver.
+ * At that point, ep0 is fully initialized, and ep_list holds
+ * the currently-available endpoints.
+ * Called in a context that permits sleeping.
+ * @setup: Invoked for ep0 control requests that aren't handled by
+ * the hardware level driver. Most calls must be handled by
+ * the gadget driver, including descriptor and configuration
+ * management. The 16 bit members of the setup data are in
+ * USB byte order. Called in_interrupt; this may not sleep. Driver
+ * queues a response to ep0, or returns negative to stall.
+ * @disconnect: Invoked after all transfers have been stopped,
+ * when the host is disconnected. May be called in_interrupt; this
+ * may not sleep. Some devices can't detect disconnect, so this might
+ * not be called except as part of controller shutdown.
+ * @unbind: Invoked when the driver is unbound from a gadget,
+ * usually from rmmod (after a disconnect is reported).
+ * Called in a context that permits sleeping.
+ * @suspend: Invoked on USB suspend. May be called in_interrupt.
+ * @resume: Invoked on USB resume. May be called in_interrupt.
+ *
+ * Devices are disabled till a gadget driver successfully bind()s, which
+ * means the driver will handle setup() requests needed to enumerate (and
+ * meet "chapter 9" requirements) then do some useful work.
+ *
+ * If gadget->is_otg is true, the gadget driver must provide an OTG
+ * descriptor during enumeration, or else fail the bind() call. In such
+ * cases, no USB traffic may flow until both bind() returns without
+ * having called usb_gadget_disconnect(), and the USB host stack has
+ * initialized.
+ *
+ * Drivers use hardware-specific knowledge to configure the usb hardware.
+ * endpoint addressing is only one of several hardware characteristics that
+ * are in descriptors the ep0 implementation returns from setup() calls.
+ *
+ * Except for ep0 implementation, most driver code shouldn't need change to
+ * run on top of different usb controllers. It'll use endpoints set up by
+ * that ep0 implementation.
+ *
+ * The usb controller driver handles a few standard usb requests. Those
+ * include set_address, and feature flags for devices, interfaces, and
+ * endpoints (the get_status, set_feature, and clear_feature requests).
+ *
+ * Accordingly, the driver's setup() callback must always implement all
+ * get_descriptor requests, returning at least a device descriptor and
+ * a configuration descriptor. Drivers must make sure the endpoint
+ * descriptors match any hardware constraints. Some hardware also constrains
+ * other descriptors. (The pxa250 allows only configurations 1, 2, or 3).
+ *
+ * The driver's setup() callback must also implement set_configuration,
+ * and should also implement set_interface, get_configuration, and
+ * get_interface. Setting a configuration (or interface) is where
+ * endpoints should be activated or (config 0) shut down.
+ *
+ * (Note that only the default control endpoint is supported. Neither
+ * hosts nor devices generally support control traffic except to ep0.)
+ *
+ * Most devices will ignore USB suspend/resume operations, and so will
+ * not provide those callbacks. However, some may need to change modes
+ * when the host is not longer directing those activities. For example,
+ * local controls (buttons, dials, etc) may need to be re-enabled since
+ * the (remote) host can't do that any longer; or an error state might
+ * be cleared, to make the device behave identically whether or not
+ * power is maintained.
+ */
+struct usb_gadget_driver {
+ enum usb_device_speed speed;
+ int (*bind)(struct usb_gadget *);
+ void (*unbind)(struct usb_gadget *);
+ int (*setup)(struct usb_gadget *,
+ const struct usb_ctrlrequest *);
+ void (*disconnect)(struct usb_gadget *);
+ void (*suspend)(struct usb_gadget *);
+ void (*resume)(struct usb_gadget *);
+};
+
+
+
+/*-------------------------------------------------------------------------*/
+
+/* driver modules register and unregister, as usual.
+ * these calls must be made in a context that can sleep.
+ *
+ * these will usually be implemented directly by the hardware-dependent
+ * usb bus interface driver, which will only support a single driver.
+ */
+
+/**
+ * usb_gadget_register_driver - register a gadget driver
+ * @driver:the driver being registered
+ *
+ * Call this in your gadget driver's module initialization function,
+ * to tell the underlying usb controller driver about your driver.
+ * The driver's bind() function will be called to bind it to a
+ * gadget before this registration call returns. It's expected that
+ * the bind() functions will be in init sections.
+ * This function must be called in a context that can sleep.
+ */
+int usb_gadget_register_driver (struct usb_gadget_driver *driver);
+
+/**
+ * usb_gadget_unregister_driver - unregister a gadget driver
+ * @driver:the driver being unregistered
+ *
+ * Call this in your gadget driver's module cleanup function,
+ * to tell the underlying usb controller that your driver is
+ * going away. If the controller 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. It's expected that the unbind() functions
+ * will in in exit sections, so may not be linked in some kernels.
+ * This function must be called in a context that can sleep.
+ */
+int usb_gadget_unregister_driver (struct usb_gadget_driver *driver);
+
+/*-------------------------------------------------------------------------*/
+
+/* utility to simplify dealing with string descriptors */
+
+/**
+ * struct usb_string - wraps a C string and its USB id
+ * @id:the (nonzero) ID for this string
+ * @s:the string, in UTF-8 encoding
+ *
+ * If you're using usb_gadget_get_string(), use this to wrap a string
+ * together with its ID.
+ */
+struct usb_string {
+ u8 id;
+ const char *s;
+};
+
+/**
+ * struct usb_gadget_strings - a set of USB strings in a given language
+ * @language:identifies the strings' language (0x0409 for en-us)
+ * @strings:array of strings with their ids
+ *
+ * If you're using usb_gadget_get_string(), use this to wrap all the
+ * strings for a given language.
+ */
+struct usb_gadget_strings {
+ u16 language; /* 0x0409 for en-us */
+ struct usb_string *strings;
+};
+
+/* put descriptor for string with that id into buf (buflen >= 256) */
+int usb_gadget_get_string (struct usb_gadget_strings *table, int id, u8 *buf);
+
+/*-------------------------------------------------------------------------*/
+
+/* utility to simplify managing config descriptors */
+
+/* write vector of descriptors into buffer */
+int usb_descriptor_fillbuf(void *, unsigned,
+ const struct usb_descriptor_header **);
+
+/* build config descriptor from single descriptor vector */
+int usb_gadget_config_buf(const struct usb_config_descriptor *config,
+ void *buf, unsigned buflen, const struct usb_descriptor_header **desc);
+
+/*-------------------------------------------------------------------------*/
+
+/* utility wrapping a simple endpoint selection policy */
+
+extern struct usb_ep *usb_ep_autoconfig (struct usb_gadget *,
+ struct usb_endpoint_descriptor *);
+
+extern void usb_ep_autoconfig_reset (struct usb_gadget *);
+
+extern int usb_gadget_handle_interrupts(void);
+
+#endif /* __LINUX_USB_GADGET_H */
diff --git a/include/net.h b/include/net.h
index ab571eb..a29dafc 100644
--- a/include/net.h
+++ b/include/net.h
@@ -125,8 +125,10 @@ extern int eth_getenv_enetaddr(char *name, uchar *enetaddr);
extern int eth_setenv_enetaddr(char *name, const uchar *enetaddr);
extern int eth_getenv_enetaddr_by_index(int index, uchar *enetaddr);
+extern int usb_eth_initialize(bd_t *bi);
extern int eth_init(bd_t *bis); /* Initialize the device */
extern int eth_send(volatile void *packet, int length); /* Send a packet */
+
#ifdef CONFIG_API
extern int eth_receive(volatile void *packet, int length); /* Receive a packet*/
#endif
@@ -481,7 +483,18 @@ static inline int is_multicast_ether_addr(const u8 *addr)
return (0x01 & addr[0]);
}
-/**
+/*
+ * is_broadcast_ether_addr - Determine if the Ethernet address is broadcast
+ * @addr: Pointer to a six-byte array containing the Ethernet address
+ *
+ * Return true if the address is the broadcast address.
+ */
+static inline int is_broadcast_ether_addr(const u8 *addr)
+{
+ return (addr[0] & addr[1] & addr[2] & addr[3] & addr[4] & addr[5]) == 0xff;
+}
+
+/*
* is_valid_ether_addr - Determine if the given Ethernet address is valid
* @addr: Pointer to a six-byte array containing the Ethernet address
*
@@ -490,7 +503,7 @@ static inline int is_multicast_ether_addr(const u8 *addr)
*
* Return true if the address is valid.
*/
-static inline int is_valid_ether_addr(const u8 * addr)
+static inline int is_valid_ether_addr(const u8 *addr)
{
/* FF:FF:FF:FF:FF:FF is a multicast address so we don't need to
* explicitly check for it here. */
--
1.7.0.4
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