From: Dan Murphy <dmurphy@ti.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [RFC] [UBOOT] [PATCH 1/4] USB: Port usb.h file from linux kernel to uBoot
Date: Fri, 21 Jun 2013 13:27:42 -0500 [thread overview]
Message-ID: <1371839265-9894-2-git-send-email-dmurphy@ti.com> (raw)
In-Reply-To: <1371839265-9894-1-git-send-email-dmurphy@ti.com>
Port the usb.h file that defines the USB structures for
the client and the host.
In this patch files are created under the include/linux/usb
directory.
usb-compat.h - Back port from include usb.h
kernel commit 84ebc10294a3d7be4c66f51070b7aedbaa24de9b
linux-compat.h - Linux kernel compatibility definitions that do not
exist in the uBoot. Moved the compatibility definitions from lin_gadget_compat.h
to this file as well.
usb-mod-devicetable.h - Is a partial back port of mod_devicetable.h in the linux kernel
for USB.
kernel commit e5354107e14755991da82e0d2a4791db92908d9d
Already existing header files were modified to pick up the new header files.
Currently musb will not compile.
Signed-off-by: Dan Murphy <dmurphy@ti.com>
---
drivers/usb/musb-new/musb_host.h | 1 +
drivers/usb/musb-new/usb-compat.h | 30 -
include/linux/usb/gadget.h | 184 +++-
include/linux/usb/linux-compat.h | 234 ++++
include/linux/usb/usb-compat.h | 1957 +++++++++++++++++++++++++++++++
include/linux/usb/usb-mod-devicetable.h | 131 ++
include/usb.h | 119 +--
include/usb/lin_gadget_compat.h | 29 +-
8 files changed, 2474 insertions(+), 211 deletions(-)
create mode 100644 include/linux/usb/linux-compat.h
create mode 100644 include/linux/usb/usb-compat.h
create mode 100644 include/linux/usb/usb-mod-devicetable.h
diff --git a/drivers/usb/musb-new/musb_host.h b/drivers/usb/musb-new/musb_host.h
index ebebe0c..49cb094 100644
--- a/drivers/usb/musb-new/musb_host.h
+++ b/drivers/usb/musb-new/musb_host.h
@@ -35,6 +35,7 @@
#ifndef _MUSB_HOST_H
#define _MUSB_HOST_H
#ifdef __UBOOT__
+#include <linux/usb/usb-compat.h>
#include "usb-compat.h"
#endif
diff --git a/drivers/usb/musb-new/usb-compat.h b/drivers/usb/musb-new/usb-compat.h
index 27f656f..bdb5f0e 100644
--- a/drivers/usb/musb-new/usb-compat.h
+++ b/drivers/usb/musb-new/usb-compat.h
@@ -6,13 +6,6 @@
struct usb_hcd {
void *hcd_priv;
};
-
-struct usb_host_endpoint {
- struct usb_endpoint_descriptor desc;
- struct list_head urb_list;
- void *hcpriv;
-};
-
/*
* urb->transfer_flags:
*
@@ -20,29 +13,6 @@ struct usb_host_endpoint {
*/
#define URB_SHORT_NOT_OK 0x0001 /* report short reads as errors */
#define URB_ZERO_PACKET 0x0040 /* Finish bulk OUT with short packet */
-
-struct urb;
-
-typedef void (*usb_complete_t)(struct urb *);
-
-struct urb {
- void *hcpriv; /* private data for host controller */
- struct list_head urb_list; /* list head for use by the urb's
- * current owner */
- struct usb_device *dev; /* (in) pointer to associated device */
- struct usb_host_endpoint *ep; /* (internal) pointer to endpoint */
- unsigned int pipe; /* (in) pipe information */
- int status; /* (return) non-ISO status */
- unsigned int transfer_flags; /* (in) URB_SHORT_NOT_OK | ...*/
- void *transfer_buffer; /* (in) associated data buffer */
- dma_addr_t transfer_dma; /* (in) dma addr for transfer_buffer */
- u32 transfer_buffer_length; /* (in) data buffer length */
- u32 actual_length; /* (return) actual transfer length */
- unsigned char *setup_packet; /* (in) setup packet (control only) */
- int start_frame; /* (modify) start frame (ISO) */
- usb_complete_t complete; /* (in) completion routine */
-};
-
#define usb_hcd_link_urb_to_ep(hcd, urb) ({ \
int ret = 0; \
list_add_tail(&urb->urb_list, &urb->ep->urb_list); \
diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h
index 220d068..f987ff2 100644
--- a/include/linux/usb/gadget.h
+++ b/include/linux/usb/gadget.h
@@ -18,7 +18,11 @@
#ifndef __LINUX_USB_GADGET_H
#define __LINUX_USB_GADGET_H
+#include <common.h>
#include <linux/list.h>
+#include <linux/usb/linux-compat.h>
+
+#define USB_GADGET_DELAYED_STATUS 0x7fff /* Impossibly large value */
struct usb_ep;
@@ -83,6 +87,11 @@ struct usb_request {
unsigned length;
dma_addr_t dma;
+ struct scatterlist *sg;
+ unsigned num_sgs;
+ unsigned num_mapped_sgs;
+
+ unsigned stream_id:16;
unsigned no_interrupt:1;
unsigned zero:1;
unsigned short_not_ok:1;
@@ -119,6 +128,8 @@ struct usb_ep_ops {
int (*dequeue) (struct usb_ep *ep, struct usb_request *req);
int (*set_halt) (struct usb_ep *ep, int value);
+ int (*set_wedge) (struct usb_ep *ep);
+
int (*fifo_status) (struct usb_ep *ep);
void (*fifo_flush) (struct usb_ep *ep);
};
@@ -140,10 +151,17 @@ struct usb_ep_ops {
*/
struct usb_ep {
void *driver_data;
+
const char *name;
const struct usb_ep_ops *ops;
struct list_head ep_list;
unsigned maxpacket:16;
+ unsigned max_streams:16;
+ unsigned mult:2;
+ unsigned maxburst:5;
+ u8 address;
+ const struct usb_endpoint_descriptor *desc;
+ const struct usb_ss_ep_comp_descriptor *comp_desc;
};
/*-------------------------------------------------------------------------*/
@@ -390,10 +408,120 @@ static inline void usb_ep_fifo_flush(struct usb_ep *ep)
ep->ops->fifo_flush(ep);
}
+/*-------------------------------------------------------------------------*/
+
+struct usb_dcd_config_params {
+ __u8 bU1devExitLat; /* U1 Device exit Latency */
+#define USB_DEFAULT_U1_DEV_EXIT_LAT 0x01 /* Less then 1 microsec */
+ __le16 bU2DevExitLat; /* U2 Device exit Latency */
+#define USB_DEFAULT_U2_DEV_EXIT_LAT 0x1F4 /* Less then 500 microsec */
+};
/*-------------------------------------------------------------------------*/
struct usb_gadget;
+struct usb_gadget_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;
+};
+
+struct usb_gadget_string_container {
+ struct list_head list;
+ u8 *stash[0];
+};
+
+/* 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);
+
+/* copy a NULL-terminated vector of descriptors */
+struct usb_descriptor_header **usb_copy_descriptors(
+ struct usb_descriptor_header **);
+
+/**
+ * usb_free_descriptors - free descriptors returned by usb_copy_descriptors()
+ * @v: vector of descriptors
+ */
+static inline void usb_free_descriptors(struct usb_descriptor_header **v)
+{
+ kfree(v);
+}
+
+struct usb_function;
+int usb_assign_descriptors(struct usb_function *f,
+ struct usb_descriptor_header **fs,
+ struct usb_descriptor_header **hs,
+ struct usb_descriptor_header **ss);
+void usb_free_all_descriptors(struct usb_function *f);
+
+/*-------------------------------------------------------------------------*/
+
+/* utility to simplify map/unmap of usb_requests to/from DMA */
+
+extern int usb_gadget_map_request(struct usb_gadget *gadget,
+ struct usb_request *req, int is_in);
+
+extern void usb_gadget_unmap_request(struct usb_gadget *gadget,
+ struct usb_request *req, int is_in);
+
+/*-------------------------------------------------------------------------*/
+
+/* utility to set gadget state properly */
+
+extern void usb_gadget_set_state(struct usb_gadget *gadget,
+ enum usb_device_state state);
+
+/*-------------------------------------------------------------------------*/
+
+/* utility wrapping a simple endpoint selection policy */
+
+extern struct usb_ep *usb_ep_autoconfig(struct usb_gadget *,
+ struct usb_endpoint_descriptor *);
+
+
+extern struct usb_ep *usb_ep_autoconfig_ss(struct usb_gadget *,
+ struct usb_endpoint_descriptor *,
+ struct usb_ss_ep_comp_descriptor *);
+
+extern void usb_ep_autoconfig_reset(struct usb_gadget *);
/* the rest of the api to the controller hardware: device operations,
* which don't involve endpoints (or i/o).
@@ -407,11 +535,11 @@ struct usb_gadget_ops {
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 */
- void *device_data; /* data private to the device */
+ void (*get_config_params)(struct usb_dcd_config_params *);
+ int (*udc_start)(struct usb_gadget *,
+ struct usb_gadget_driver *);
+ int (*udc_stop)(struct usb_gadget *,
+ struct usb_gadget_driver *);
};
/**
@@ -462,6 +590,9 @@ struct usb_gadget {
struct usb_ep *ep0;
struct list_head ep_list; /* of usb_ep */
enum usb_device_speed speed;
+ enum usb_device_speed max_speed;
+ enum usb_device_state state;
+ unsigned sg_supported:1;
unsigned is_dualspeed:1;
unsigned is_otg:1;
unsigned is_a_peripheral:1;
@@ -470,6 +601,9 @@ struct usb_gadget {
unsigned a_alt_hnp_support:1;
const char *name;
struct device dev;
+ unsigned out_epnum;
+ unsigned in_epnum;
+
};
static inline void set_gadget_data(struct usb_gadget *gadget, void *data)
@@ -756,16 +890,22 @@ static inline int usb_gadget_disconnect(struct usb_gadget *gadget)
* power is maintained.
*/
struct usb_gadget_driver {
- enum usb_device_speed speed;
- int (*bind)(struct usb_gadget *);
+ char *function;
+ enum usb_device_speed max_speed;
+ int (*bind)(struct usb_gadget *gadget,
+ struct usb_gadget_driver *driver);
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 *);
-};
+ /* FIXME support safe rmmod */
+ struct device_driver driver;
+ enum usb_device_speed speed;
+
+};
/*-------------------------------------------------------------------------*/
@@ -806,34 +946,6 @@ 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);
diff --git a/include/linux/usb/linux-compat.h b/include/linux/usb/linux-compat.h
new file mode 100644
index 0000000..123cc2e
--- /dev/null
+++ b/include/linux/usb/linux-compat.h
@@ -0,0 +1,234 @@
+/*
+ * linux_compat.h -- linux compatibility header file
+ *
+ * Copyright (C) 2013
+ * Texas Instruments Incorporated.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef __LINUX_COMPAT_H__
+#define __LINUX_COMPAT_H__
+
+#include <malloc.h>
+#include <linux/list.h>
+#include <linux/compat.h>
+#include <asm-generic/errno.h>
+
+#define __init
+#define __devinit
+#define __devinitdata
+#define __devinitconst
+#define __iomem
+
+struct unused {};
+typedef struct unused unused_t;
+
+typedef int irqreturn_t;
+typedef unused_t spinlock_t;
+
+struct work_struct {};
+
+struct timer_list {};
+struct notifier_block {};
+
+typedef unsigned long dmaaddr_t;
+#define BUS_ID_SIZE 20
+
+struct device {
+ struct device *parent;
+ struct class *class;
+ char bus_id[BUS_ID_SIZE]; /* position on parent bus */
+ dev_t devt; /* dev_t, creates the sysfs "dev" */
+ void (*release)(struct device *dev);
+ void *driver_data; /* data private to the driver */
+ void *device_data; /* data private to the device */
+};
+
+/**
+ * struct device_driver - The basic device driver structure
+ * @name: Name of the device driver.
+ * @bus: The bus which the device of this driver belongs to.
+ * @suppress_bind_attrs: Disables bind/unbind via sysfs.
+ *
+ * The device driver-model tracks all of the drivers known to the system.
+ * The main reason for this tracking is to enable the driver core to match
+ * up drivers with new devices. Once drivers are known objects within the
+ * system, however, a number of other things become possible. Device drivers
+ * can export information and configuration variables that are independent
+ * of any specific device.
+ */
+struct device_driver {
+ const char *name;
+ struct bus_type *bus;
+
+ bool suppress_bind_attrs; /* disables bind/unbind via sysfs */
+
+};
+
+/*
+ * Loop over each sg element, following the pointer to a new list if necessary
+ */
+#define for_each_sg(sglist, sg, nr, __i) \
+ for (__i = 0, sg = (sglist); __i < (nr); __i++, sg = sg_next(sg))
+
+/* Errors */
+#define EOPNOTSUPP 95
+
+#define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
+
+#define setup_timer(timer, func, data) do {} while (0)
+#define del_timer_sync(timer) do {} while (0)
+#define schedule_work(work) do {} while (0)
+#define INIT_WORK(work, fun) do {} while (0)
+
+#define cpu_relax() do {} while (0)
+
+#define dev_dbg(dev, fmt, args...) \
+ debug(fmt, ##args)
+#define dev_vdbg(dev, fmt, args...) \
+ debug(fmt, ##args)
+#define dev_info(dev, fmt, args...) \
+ printf(fmt, ##args)
+#define dev_err(dev, fmt, args...) \
+ printf(fmt, ##args)
+#define printk printf
+
+#define WARN(condition, fmt, args...) ({ \
+ int ret_warn = !!condition; \
+ if (ret_warn) \
+ printf(fmt, ##args); \
+ ret_warn; })
+
+#define KERN_DEBUG
+#define KERN_NOTICE
+#define KERN_WARNING
+#define KERN_ERR
+#define WARN_ON_ONCE WARN_ON
+#define BUILD_BUG_ON_NOT_POWER_OF_2(n) (0)
+
+#define kfree(ptr) free(ptr)
+
+/* common */
+#define spin_lock_init(...)
+#define spin_lock(...)
+#define spin_lock_irqsave(lock, flags) do { debug("%lu\n", flags); } while (0)
+#define spin_unlock(...)
+#define spin_unlock_irqrestore(lock, flags) do {flags = 0; } while (0)
+#define disable_irq(...)
+#define enable_irq(...)
+
+#define mutex_init(...)
+#define mutex_lock(...)
+#define mutex_unlock(...)
+
+#define GFP_KERNEL 0
+
+#define IRQ_HANDLED 1
+
+#define EOPNOTSUPP 95
+#define ENOTSUPP 524 /* Operation is not supported */
+
+#define BITS_PER_BYTE 8
+#define BITS_TO_LONGS(nr) \
+ DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(long))
+#define DECLARE_BITMAP(name, bits) \
+ unsigned long name[BITS_TO_LONGS(bits)]
+
+#define small_const_nbits(nbits) \
+ (__builtin_constant_p(nbits) && (nbits) <= BITS_PER_LONG)
+
+/* TODO: Figure out these structs */
+static inline int pm_runtime_get_sync(struct device *dev) { return 0; }
+#define pm_runtime_put(dev) do {} while (0)
+#define pm_runtime_put_sync(dev) do {} while (0)
+#define pm_runtime_use_autosuspend(dev) do {} while (0)
+#define pm_runtime_set_autosuspend_delay(dev, delay) do {} while (0)
+#define pm_runtime_enable(dev) do {} while (0)
+#define pm_runtime_disable(dev) do {} while (0)
+
+#define MODULE_DESCRIPTION(desc)
+#define MODULE_AUTHOR(author)
+#define MODULE_LICENSE(license)
+#define MODULE_ALIAS(alias)
+#define module_param(name, type, perm)
+#define MODULE_PARM_DESC(name, desc)
+#define EXPORT_SYMBOL_GPL(name)
+#define MODULE_DEVICE_TABLE(type, name)
+
+#define writesl(a, d, s) __raw_writesl((unsigned long)a, d, s)
+#define readsl(a, d, s) __raw_readsl((unsigned long)a, d, s)
+#define writesw(a, d, s) __raw_writesw((unsigned long)a, d, s)
+#define readsw(a, d, s) __raw_readsw((unsigned long)a, d, s)
+#define writesb(a, d, s) __raw_writesb((unsigned long)a, d, s)
+#define readsb(a, d, s) __raw_readsb((unsigned long)a, d, s)
+
+/* IRQ */
+#define IRQ_NONE 0
+#define IRQ_WAKE_THREAD 0
+#define IRQF_SHARED 0
+#define IRQF_ONESHOT 0
+#define GFP_KERNEL 0
+
+#define dev_set_drvdata(dev, data) do {} while (0)
+
+#define disable_irq_wake(irq) do {} while (0)
+#define enable_irq_wake(irq) -EINVAL
+#define free_irq(irq, data) do {} while (0)
+#define request_irq(nr, f, flags, nm, data) 0
+
+#define device_init_wakeup(dev, a) do {} while (0)
+
+#define platform_data device_data
+
+#ifndef wmb
+#define wmb() asm volatile ("" : : : "memory")
+#endif
+
+#define msleep(a) udelay(a * 1000)
+
+/*
+ * Map U-Boot config options to Linux ones
+ */
+#ifdef CONFIG_OMAP34XX
+#define CONFIG_SOC_OMAP3430
+#endif
+
+/* TODO: Figure out these structs
+static inline int IS_ENABLED(option) { return option; };*/
+#define lower_32_bits(n) ((u32)(n))
+#define upper_32_bits(n) ((u32)(((n) >> 16) >> 16))
+#define PTR_ALIGN(p, a) ((typeof(p))ALIGN((unsigned long)(p), (a)))
+#define IS_ALIGNED(x, a) (((x) & ((typeof(x))(a) - 1)) == 0)
+#define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
+
+
+static inline void *dma_alloc_coherent(void *dev, size_t size,
+ dma_addr_t *dma_handle, gfp_t gfp)
+{
+ void *p;
+
+ p = malloc(size);
+ *dma_handle = (unsigned long)p;
+ return p;
+}
+
+static inline void dma_free_coherent(struct device *dev, size_t size,
+ void *vaddr, dma_addr_t bus)
+{
+ free(vaddr);
+}
+
+#endif /* __LINUX_COMPAT_H__ */
diff --git a/include/linux/usb/usb-compat.h b/include/linux/usb/usb-compat.h
new file mode 100644
index 0000000..ae040d5
--- /dev/null
+++ b/include/linux/usb/usb-compat.h
@@ -0,0 +1,1957 @@
+/*
+ * Copyright (C) 2013
+ * Texas Instruments Incorporated.
+ *
+ * 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
+ *
+ * Note: This code has been backported from linux source include/linux/usb.h
+ * At the time of the backport the linux source did not contain a license
+ * nor a copyright.
+ *
+ */
+
+#ifndef __LINUX_USB_H
+#define __LINUX_USB_H
+
+#define __UBOOT__
+
+#ifndef __UBOOT__
+#include <linux/mod_devicetable.h>
+#include <linux/usb/ch9.h>
+#include <linux/errno.h> /* for -ENODEV */
+#include <linux/delay.h> /* for mdelay() */
+#include <linux/interrupt.h> /* for in_interrupt() */
+#include <linux/list.h> /* for struct list_head */
+#include <linux/kref.h> /* for struct kref */
+#include <linux/device.h> /* for struct device */
+#include <linux/fs.h> /* for struct file_operations */
+#include <linux/completion.h> /* for struct completion */
+#include <linux/sched.h> /* for current && schedule_timeout */
+#include <linux/mutex.h> /* for struct mutex */
+#include <linux/pm_runtime.h> /* for runtime PM */
+#else
+
+#include <common.h>
+#include <linux/list.h> /* for struct list_head */
+#include <linux/usb/ch9.h>
+#include <linux/usb/linux-compat.h>
+
+#include "usb-mod-devicetable.h"
+
+#endif
+
+#define USB_MAJOR 180
+#define USB_DEVICE_MAJOR 189
+
+struct usb_device;
+struct usb_driver;
+struct wusb_dev;
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * Host-side wrappers for standard USB descriptors ... these are parsed
+ * from the data provided by devices. Parsing turns them from a flat
+ * sequence of descriptors into a hierarchy:
+ *
+ * - devices have one (usually) or more configs;
+ * - configs have one (often) or more interfaces;
+ * - interfaces have one (usually) or more settings;
+ * - each interface setting has zero or (usually) more endpoints.
+ * - a SuperSpeed endpoint has a companion descriptor
+ *
+ * And there might be other descriptors mixed in with those.
+ *
+ * Devices may also have class-specific or vendor-specific descriptors.
+ */
+
+struct ep_device;
+
+/**
+ * struct usb_host_endpoint - host-side endpoint descriptor and queue
+ * @desc: descriptor for this endpoint, wMaxPacketSize in native byteorder
+ * @ss_ep_comp: SuperSpeed companion descriptor for this endpoint
+ * @urb_list: urbs queued to this endpoint; maintained by usbcore
+ * @hcpriv: for use by HCD; typically holds hardware dma queue head (QH)
+ * with one or more transfer descriptors (TDs) per urb
+ * @ep_dev: ep_device for sysfs info
+ * @extra: descriptors following this endpoint in the configuration
+ * @extralen: how many bytes of "extra" are valid
+ * @enabled: URBs may be submitted to this endpoint
+ *
+ * USB requests are always queued to a given endpoint, identified by a
+ * descriptor within an active interface in a given USB configuration.
+ */
+struct usb_host_endpoint {
+ struct usb_endpoint_descriptor desc;
+ struct usb_ss_ep_comp_descriptor ss_ep_comp;
+ struct list_head urb_list;
+ void *hcpriv;
+ struct ep_device *ep_dev; /* For sysfs info */
+
+ unsigned char *extra; /* Extra descriptors */
+ int extralen;
+ int enabled;
+};
+
+/* host-side wrapper for one interface setting's parsed descriptors */
+struct usb_host_interface {
+ struct usb_interface_descriptor desc;
+
+ int extralen;
+ unsigned char *extra; /* Extra descriptors */
+
+ /* array of desc.bNumEndpoint endpoints associated with this
+ * interface setting. these will be in no particular order.
+ */
+ struct usb_host_endpoint *endpoint;
+
+ char *string; /* iInterface string, if present */
+};
+
+enum usb_interface_condition {
+ USB_INTERFACE_UNBOUND = 0,
+ USB_INTERFACE_BINDING,
+ USB_INTERFACE_BOUND,
+ USB_INTERFACE_UNBINDING,
+};
+#ifdef __UBOOT__
+enum {
+ /* Maximum packet size; encoded as 0,1,2,3 = 8,16,32,64 */
+ PACKET_SIZE_8 = 0,
+ PACKET_SIZE_16 = 1,
+ PACKET_SIZE_32 = 2,
+ PACKET_SIZE_64 = 3,
+};
+#endif
+/**
+ * struct usb_interface - what usb device drivers talk to
+ * @altsetting: array of interface structures, one for each alternate
+ * setting that may be selected. Each one includes a set of
+ * endpoint configurations. They will be in no particular order.
+ * @cur_altsetting: the current altsetting.
+ * @num_altsetting: number of altsettings defined.
+ * @intf_assoc: interface association descriptor
+ * @minor: the minor number assigned to this interface, if this
+ * interface is bound to a driver that uses the USB major number.
+ * If this interface does not use the USB major, this field should
+ * be unused. The driver should set this value in the probe()
+ * function of the driver, after it has been assigned a minor
+ * number from the USB core by calling usb_register_dev().
+ * @condition: binding state of the interface: not bound, binding
+ * (in probe()), bound to a driver, or unbinding (in disconnect())
+ * @sysfs_files_created: sysfs attributes exist
+ * @ep_devs_created: endpoint child pseudo-devices exist
+ * @unregistering: flag set when the interface is being unregistered
+ * @needs_remote_wakeup: flag set when the driver requires remote-wakeup
+ * capability during autosuspend.
+ * @needs_altsetting0: flag set when a set-interface request for altsetting 0
+ * has been deferred.
+ * @needs_binding: flag set when the driver should be re-probed or unbound
+ * following a reset or suspend operation it doesn't support.
+ * @dev: driver model's view of this device
+ * @usb_dev: if an interface is bound to the USB major, this will point
+ * to the sysfs representation for that device.
+ * @pm_usage_cnt: PM usage counter for this interface
+ * @reset_ws: Used for scheduling resets from atomic context.
+ * @reset_running: set to 1 if the interface is currently running a
+ * queued reset so that usb_cancel_queued_reset() doesn't try to
+ * remove from the workqueue when running inside the worker
+ * thread. See __usb_queue_reset_device().
+ * @resetting_device: USB core reset the device, so use alt setting 0 as
+ * current; needs bandwidth alloc after reset.
+ *
+ * USB device drivers attach to interfaces on a physical device. Each
+ * interface encapsulates a single high level function, such as feeding
+ * an audio stream to a speaker or reporting a change in a volume control.
+ * Many USB devices only have one interface. The protocol used to talk to
+ * an interface's endpoints can be defined in a usb "class" specification,
+ * or by a product's vendor. The (default) control endpoint is part of
+ * every interface, but is never listed among the interface's descriptors.
+ *
+ * The driver that is bound to the interface can use standard driver model
+ * calls such as dev_get_drvdata() on the dev member of this structure.
+ *
+ * Each interface may have alternate settings. The initial configuration
+ * of a device sets altsetting 0, but the device driver can change
+ * that setting using usb_set_interface(). Alternate settings are often
+ * used to control the use of periodic endpoints, such as by having
+ * different endpoints use different amounts of reserved USB bandwidth.
+ * All standards-conformant USB devices that use isochronous endpoints
+ * will use them in non-default settings.
+ *
+ * The USB specification says that alternate setting numbers must run from
+ * 0 to one less than the total number of alternate settings. But some
+ * devices manage to mess this up, and the structures aren't necessarily
+ * stored in numerical order anyhow. Use usb_altnum_to_altsetting() to
+ * look up an alternate setting in the altsetting array based on its number.
+ */
+struct usb_interface {
+ /* array of alternate settings for this interface,
+ * stored in no particular order */
+ struct usb_host_interface *altsetting;
+
+ struct usb_host_interface *cur_altsetting; /* the currently
+ * active alternate setting */
+ unsigned num_altsetting; /* number of alternate settings */
+
+ /* If there is an interface association descriptor then it will list
+ * the associated interfaces */
+ struct usb_interface_assoc_descriptor *intf_assoc;
+#ifdef __UBOOT__
+#define USB_MAXENDPOINTS 16
+ struct usb_interface_descriptor desc;
+ struct usb_endpoint_descriptor ep_desc[USB_MAXENDPOINTS];
+ unsigned char no_of_ep;
+ unsigned char act_altsetting;
+ struct usb_ss_ep_comp_descriptor ss_ep_comp_desc[USB_MAXENDPOINTS];
+#endif
+ int minor; /* minor number this interface is
+ * bound to */
+ enum usb_interface_condition condition; /* state of binding */
+ unsigned sysfs_files_created:1; /* the sysfs attributes exist */
+ unsigned ep_devs_created:1; /* endpoint "devices" exist */
+ unsigned unregistering:1; /* unregistration is in progress */
+ unsigned needs_remote_wakeup:1; /* driver requires remote wakeup */
+ unsigned needs_altsetting0:1; /* switch to altsetting 0 is pending */
+ unsigned needs_binding:1; /* needs delayed unbind/rebind */
+ unsigned reset_running:1;
+ unsigned resetting_device:1; /* true: bandwidth alloc after reset */
+
+ struct device dev; /* interface specific device info */
+ struct device *usb_dev;
+#ifndef __UBOOT__
+ atomic_t pm_usage_cnt; /* usage counter for autosuspend */
+ struct work_struct reset_ws; /* for resets in atomic context */
+#endif
+};
+#define to_usb_interface(d) container_of(d, struct usb_interface, dev)
+
+static inline void *usb_get_intfdata(struct usb_interface *intf)
+{
+#ifndef __UBOOT__
+ return dev_get_drvdata(&intf->dev);
+#else
+ /* TODO Need to implement this to return the correct pointer */
+ return NULL;
+#endif
+}
+
+static inline void usb_set_intfdata(struct usb_interface *intf, void *data)
+{
+#ifndef __UBOOT__
+ dev_set_drvdata(&intf->dev, data);
+#else
+ /* TODO Need to implement this to return the correct pointer */
+ return;
+#endif
+}
+
+struct usb_interface *usb_get_intf(struct usb_interface *intf);
+void usb_put_intf(struct usb_interface *intf);
+
+/* this maximum is arbitrary */
+#define USB_MAXINTERFACES 32
+#define USB_MAXIADS (USB_MAXINTERFACES/2)
+
+/**
+ * struct usb_interface_cache - long-term representation of a device interface
+ * @num_altsetting: number of altsettings defined.
+ * @ref: reference counter.
+ * @altsetting: variable-length array of interface structures, one for
+ * each alternate setting that may be selected. Each one includes a
+ * set of endpoint configurations. They will be in no particular order.
+ *
+ * These structures persist for the lifetime of a usb_device, unlike
+ * struct usb_interface (which persists only as long as its configuration
+ * is installed). The altsetting arrays can be accessed through these
+ * structures at any time, permitting comparison of configurations and
+ * providing support for the /proc/bus/usb/devices pseudo-file.
+ */
+struct usb_interface_cache {
+ unsigned num_altsetting; /* number of alternate settings */
+#ifndef __UBOOT__
+ struct kref ref; /* reference counter */
+#endif
+
+ /* variable-length array of alternate settings for this interface,
+ * stored in no particular order */
+ struct usb_host_interface altsetting[0];
+};
+#define ref_to_usb_interface_cache(r) \
+ container_of(r, struct usb_interface_cache, ref)
+#define altsetting_to_usb_interface_cache(a) \
+ container_of(a, struct usb_interface_cache, altsetting[0])
+
+#ifdef __UBOOT__
+/* Configuration information.. */
+struct usb_config {
+ struct usb_config_descriptor desc;
+
+ unsigned char no_of_if; /* number of interfaces */
+ struct usb_interface if_desc[USB_MAXINTERFACES];
+} __attribute__ ((packed));
+#endif
+
+/**
+ * struct usb_host_config - representation of a device's configuration
+ * @desc: the device's configuration descriptor.
+ * @string: pointer to the cached version of the iConfiguration string, if
+ * present for this configuration.
+ * @intf_assoc: list of any interface association descriptors in this config
+ * @interface: array of pointers to usb_interface structures, one for each
+ * interface in the configuration. The number of interfaces is stored
+ * in desc.bNumInterfaces. These pointers are valid only while the
+ * the configuration is active.
+ * @intf_cache: array of pointers to usb_interface_cache structures, one
+ * for each interface in the configuration. These structures exist
+ * for the entire life of the device.
+ * @extra: pointer to buffer containing all extra descriptors associated
+ * with this configuration (those preceding the first interface
+ * descriptor).
+ * @extralen: length of the extra descriptors buffer.
+ *
+ * USB devices may have multiple configurations, but only one can be active
+ * at any time. Each encapsulates a different operational environment;
+ * for example, a dual-speed device would have separate configurations for
+ * full-speed and high-speed operation. The number of configurations
+ * available is stored in the device descriptor as bNumConfigurations.
+ *
+ * A configuration can contain multiple interfaces. Each corresponds to
+ * a different function of the USB device, and all are available whenever
+ * the configuration is active. The USB standard says that interfaces
+ * are supposed to be numbered from 0 to desc.bNumInterfaces-1, but a lot
+ * of devices get this wrong. In addition, the interface array is not
+ * guaranteed to be sorted in numerical order. Use usb_ifnum_to_if() to
+ * look up an interface entry based on its number.
+ *
+ * Device drivers should not attempt to activate configurations. The choice
+ * of which configuration to install is a policy decision based on such
+ * considerations as available power, functionality provided, and the user's
+ * desires (expressed through userspace tools). However, drivers can call
+ * usb_reset_configuration() to reinitialize the current configuration and
+ * all its interfaces.
+ */
+struct usb_host_config {
+ struct usb_config_descriptor desc;
+ char *string; /* iConfiguration string, if present */
+
+ /* List of any Interface Association Descriptors in this
+ * configuration. */
+ struct usb_interface_assoc_descriptor *intf_assoc[USB_MAXIADS];
+
+ /* the interfaces associated with this configuration,
+ * stored in no particular order */
+ struct usb_interface *interface[USB_MAXINTERFACES];
+
+ /* Interface information available even when this is not the
+ * active configuration */
+ struct usb_interface_cache *intf_cache[USB_MAXINTERFACES];
+
+ unsigned char *extra; /* Extra descriptors */
+ int extralen;
+};
+
+/* USB2.0 and USB3.0 device BOS descriptor set */
+struct usb_host_bos {
+ struct usb_bos_descriptor *desc;
+
+ /* wireless cap descriptor is handled by wusb */
+ struct usb_ext_cap_descriptor *ext_cap;
+ struct usb_ss_cap_descriptor *ss_cap;
+ struct usb_ss_container_id_descriptor *ss_id;
+};
+
+int __usb_get_extra_descriptor(char *buffer, unsigned size,
+ unsigned char type, void **ptr);
+#define usb_get_extra_descriptor(ifpoint, type, ptr) \
+ __usb_get_extra_descriptor((ifpoint)->extra, \
+ (ifpoint)->extralen, \
+ type, (void **)ptr)
+
+/* ----------------------------------------------------------------------- */
+
+/* USB device number allocation bitmap */
+struct usb_devmap {
+ unsigned long devicemap[128 / (8*sizeof(unsigned long))];
+};
+
+/*
+ * Allocated per bus (tree of devices) we have:
+ */
+struct usb_bus {
+ struct device *controller; /* host/master side hardware */
+ int busnum; /* Bus number (in order of reg) */
+ const char *bus_name; /* stable id (PCI slot_name etc) */
+ u8 uses_dma; /* Does the host controller use DMA? */
+ u8 uses_pio_for_control; /*
+ * Does the host controller use PIO
+ * for control transfers?
+ */
+ u8 otg_port; /* 0, or number of OTG/HNP port */
+ unsigned is_b_host:1; /* true during some HNP roleswitches */
+ unsigned b_hnp_enable:1; /* OTG: did A-Host enable HNP? */
+ unsigned no_stop_on_short:1; /*
+ * Quirk: some controllers don't stop
+ * the ep queue on a short transfer
+ * with the URB_SHORT_NOT_OK flag set.
+ */
+ unsigned sg_tablesize; /* 0 or largest number of sg list entries */
+
+ int devnum_next; /* Next open device number in
+ * round-robin allocation */
+
+ struct usb_devmap devmap; /* device address allocation map */
+ struct usb_device *root_hub; /* Root hub */
+ struct usb_bus *hs_companion; /* Companion EHCI bus, if any */
+ struct list_head bus_list; /* list of busses */
+
+ int bandwidth_allocated; /* on this bus: how much of the time
+ * reserved for periodic (intr/iso)
+ * requests is used, on average?
+ * Units: microseconds/frame.
+ * Limits: Full/low speed reserve 90%,
+ * while high speed reserves 80%.
+ */
+ int bandwidth_int_reqs; /* number of Interrupt requests */
+ int bandwidth_isoc_reqs; /* number of Isoc. requests */
+
+ unsigned resuming_ports; /* bit array: resuming root-hub ports */
+
+#if defined(CONFIG_USB_MON) || defined(CONFIG_USB_MON_MODULE)
+ struct mon_bus *mon_bus; /* non-null when associated */
+ int monitored; /* non-zero when monitored */
+#endif
+};
+
+/* ----------------------------------------------------------------------- */
+
+/* This is arbitrary.
+ * From USB 2.0 spec Table 11-13, offset 7, a hub can
+ * have up to 255 ports. The most yet reported is 10.
+ *
+ * Current Wireless USB host hardware (Intel i1480 for example) allows
+ * up to 22 devices to connect. Upcoming hardware might raise that
+ * limit. Because the arrays need to add a bit for hub status data, we
+ * do 31, so plus one evens out to four bytes.
+ */
+#define USB_MAXCHILDREN (31)
+
+struct usb_tt;
+
+enum usb_device_removable {
+ USB_DEVICE_REMOVABLE_UNKNOWN = 0,
+ USB_DEVICE_REMOVABLE,
+ USB_DEVICE_FIXED,
+};
+
+enum usb_port_connect_type {
+ USB_PORT_CONNECT_TYPE_UNKNOWN = 0,
+ USB_PORT_CONNECT_TYPE_HOT_PLUG,
+ USB_PORT_CONNECT_TYPE_HARD_WIRED,
+ USB_PORT_NOT_USED,
+};
+
+/*
+ * USB 3.0 Link Power Management (LPM) parameters.
+ *
+ * PEL and SEL are USB 3.0 Link PM latencies for device-initiated LPM exit.
+ * MEL is the USB 3.0 Link PM latency for host-initiated LPM exit.
+ * All three are stored in nanoseconds.
+ */
+struct usb3_lpm_parameters {
+ /*
+ * Maximum exit latency (MEL) for the host to send a packet to the
+ * device (either a Ping for isoc endpoints, or a data packet for
+ * interrupt endpoints), the hubs to decode the packet, and for all hubs
+ * in the path to transition the links to U0.
+ */
+ unsigned int mel;
+ /*
+ * Maximum exit latency for a device-initiated LPM transition to bring
+ * all links into U0. Abbreviated as "PEL" in section 9.4.12 of the USB
+ * 3.0 spec, with no explanation of what "P" stands for. "Path"?
+ */
+ unsigned int pel;
+
+ /*
+ * The System Exit Latency (SEL) includes PEL, and three other
+ * latencies. After a device initiates a U0 transition, it will take
+ * some time from when the device sends the ERDY to when it will finally
+ * receive the data packet. Basically, SEL should be the worse-case
+ * latency from when a device starts initiating a U0 transition to when
+ * it will get data.
+ */
+ unsigned int sel;
+ /*
+ * The idle timeout value that is currently programmed into the parent
+ * hub for this device. When the timer counts to zero, the parent hub
+ * will initiate an LPM transition to either U1 or U2.
+ */
+ int timeout;
+};
+
+/**
+ * struct usb_device - kernel's representation of a USB device
+ * @devnum: device number; address on a USB bus
+ * @devpath: device ID string for use in messages (e.g., /port/...)
+ * @route: tree topology hex string for use with xHCI
+ * @state: device state: configured, not attached, etc.
+ * @speed: device speed: high/full/low (or error)
+ * @tt: Transaction Translator info; used with low/full speed dev, highspeed hub
+ * @ttport: device port on that tt hub
+ * @toggle: one bit for each endpoint, with ([0] = IN, [1] = OUT) endpoints
+ * @parent: our hub, unless we're the root
+ * @bus: bus we're part of
+ * @ep0: endpoint 0 data (default control pipe)
+ * @dev: generic device interface
+ * @descriptor: USB device descriptor
+ * @bos: USB device BOS descriptor set
+ * @config: all of the device's configs
+ * @actconfig: the active configuration
+ * @ep_in: array of IN endpoints
+ * @ep_out: array of OUT endpoints
+ * @rawdescriptors: raw descriptors for each config
+ * @bus_mA: Current available from the bus
+ * @portnum: parent port number (origin 1)
+ * @level: number of USB hub ancestors
+ * @can_submit: URBs may be submitted
+ * @persist_enabled: USB_PERSIST enabled for this device
+ * @have_langid: whether string_langid is valid
+ * @authorized: policy has said we can use it;
+ * (user space) policy determines if we authorize this device to be
+ * used or not. By default, wired USB devices are authorized.
+ * WUSB devices are not, until we authorize them from user space.
+ * FIXME -- complete doc
+ * @authenticated: Crypto authentication passed
+ * @wusb: device is Wireless USB
+ * @lpm_capable: device supports LPM
+ * @usb2_hw_lpm_capable: device can perform USB2 hardware LPM
+ * @usb2_hw_lpm_enabled: USB2 hardware LPM enabled
+ * @usb3_lpm_enabled: USB3 hardware LPM enabled
+ * @string_langid: language ID for strings
+ * @product: iProduct string, if present (static)
+ * @manufacturer: iManufacturer string, if present (static)
+ * @serial: iSerialNumber string, if present (static)
+ * @filelist: usbfs files that are open to this device
+ * @maxchild: number of ports if hub
+ * @quirks: quirks of the whole device
+ * @urbnum: number of URBs submitted for the whole device
+ * @active_duration: total time device is not suspended
+ * @connect_time: time device was first connected
+ * @do_remote_wakeup: remote wakeup should be enabled
+ * @reset_resume: needs reset instead of resume
+ * @port_is_suspended: the upstream port is suspended (L2 or U3)
+ * @wusb_dev: if this is a Wireless USB device, link to the WUSB
+ * specific data for the device.
+ * @slot_id: Slot ID assigned by xHCI
+ * @removable: Device can be physically removed from this port
+ * @u1_params: exit latencies for USB3 U1 LPM state, and hub-initiated timeout.
+ * @u2_params: exit latencies for USB3 U2 LPM state, and hub-initiated timeout.
+ * @lpm_disable_count: Ref count used by usb_disable_lpm() and usb_enable_lpm()
+ * to keep track of the number of functions that require USB 3.0 Link Power
+ * Management to be disabled for this usb_device. This count should only
+ * be manipulated by those functions, with the bandwidth_mutex is held.
+ *
+ * Notes:
+ * Usbcore drivers should not set usbdev->state directly. Instead use
+ * usb_set_device_state().
+ */
+struct usb_device {
+ int devnum;
+ char devpath[16];
+#ifdef __UBOOT__
+ /* Legacy uBoot usb_device definitions */
+ char mf[32]; /* manufacturer */
+ char prod[32]; /* product */
+
+ struct usb_device *children[USB_MAXCHILDREN];
+ struct usb_config config; /* config descriptor */
+
+ int epmaxpacketin[16]; /* INput endpoint specific maximums */
+ int epmaxpacketout[16]; /* OUTput endpoint specific maximums */
+ int configno; /* selected config number */
+ int act_len; /* transfered bytes */
+ int portnr;
+ /* Maximum packet size; one of: PACKET_SIZE_* */
+ int maxpacketsize;
+ int irq_act_len; /* transfered bytes */
+ int (*irq_handle)(struct usb_device *dev);
+
+ /* endpoint halts; one bit per endpoint # & direction;
+ * [0] = IN, [1] = OUT
+ */
+ unsigned int halted[2];
+ unsigned long status;
+ unsigned long irq_status;
+
+ void *controller; /* hardware controller private data */
+ void *privptr;
+#endif
+ u32 route;
+ enum usb_device_state state;
+ enum usb_device_speed speed;
+
+ struct usb_tt *tt;
+ int ttport;
+
+ unsigned int toggle[2];
+
+ struct usb_device *parent;
+ struct usb_bus *bus;
+ struct usb_host_endpoint ep0;
+
+ struct device dev;
+
+ struct usb_device_descriptor descriptor;
+ struct usb_host_bos *bos;
+#ifndef __UBOOT__
+ /* This conflicts with legacy uBoot config */
+ struct usb_host_config *config;
+#else
+ struct usb_host_config *host_config;
+#endif
+ struct usb_host_config *actconfig;
+ struct usb_host_endpoint *ep_in[16];
+ struct usb_host_endpoint *ep_out[16];
+
+ char **rawdescriptors;
+
+ unsigned short bus_mA;
+ u8 portnum;
+ u8 level;
+
+ unsigned can_submit:1;
+ unsigned persist_enabled:1;
+ unsigned have_langid:1;
+ unsigned authorized:1;
+ unsigned authenticated:1;
+ unsigned wusb:1;
+ unsigned lpm_capable:1;
+ unsigned usb2_hw_lpm_capable:1;
+ unsigned usb2_hw_lpm_enabled:1;
+ unsigned usb3_lpm_enabled:1;
+ int string_langid;
+
+ /* static strings from the device */
+ char *product;
+ char *manufacturer;
+ char *serial;
+
+ struct list_head filelist;
+
+ int maxchild;
+
+ u32 quirks;
+#ifndef __UBOOT__
+ atomic_t urbnum;
+#endif
+ unsigned long active_duration;
+
+#ifdef CONFIG_PM
+ unsigned long connect_time;
+
+ unsigned do_remote_wakeup:1;
+ unsigned reset_resume:1;
+ unsigned port_is_suspended:1;
+#endif
+ struct wusb_dev *wusb_dev;
+ int slot_id;
+ enum usb_device_removable removable;
+ struct usb3_lpm_parameters u1_params;
+ struct usb3_lpm_parameters u2_params;
+ unsigned lpm_disable_count;
+};
+
+#define to_usb_device(d) container_of(d, struct usb_device, dev)
+static inline struct usb_device *interface_to_usbdev(struct usb_interface *intf)
+{
+ return to_usb_device(intf->dev.parent);
+}
+
+extern struct usb_device *usb_get_dev(struct usb_device *dev);
+extern void usb_put_dev(struct usb_device *dev);
+extern struct usb_device *usb_hub_find_child(struct usb_device *hdev,
+ int port1);
+
+/**
+ * usb_hub_for_each_child - iterate over all child devices on the hub
+ * @hdev: USB device belonging to the usb hub
+ * @port1: portnum associated with child device
+ * @child: child device pointer
+ */
+#define usb_hub_for_each_child(hdev, port1, child) \
+ for (port1 = 1, child = usb_hub_find_child(hdev, port1); \
+ port1 <= hdev->maxchild; \
+ child = usb_hub_find_child(hdev, ++port1)) \
+ if (!child) continue; else
+
+/* USB device locking */
+#define usb_lock_device(udev) device_lock(&(udev)->dev)
+#define usb_unlock_device(udev) device_unlock(&(udev)->dev)
+#define usb_trylock_device(udev) device_trylock(&(udev)->dev)
+extern int usb_lock_device_for_reset(struct usb_device *udev,
+ const struct usb_interface *iface);
+
+/* USB port reset for device reinitialization */
+extern int usb_reset_device(struct usb_device *dev);
+extern void usb_queue_reset_device(struct usb_interface *dev);
+
+#ifdef CONFIG_ACPI
+extern int usb_acpi_set_power_state(struct usb_device *hdev, int index,
+ bool enable);
+extern bool usb_acpi_power_manageable(struct usb_device *hdev, int index);
+#else
+static inline int usb_acpi_set_power_state(struct usb_device *hdev, int index,
+ bool enable) { return 0; }
+static inline bool usb_acpi_power_manageable(struct usb_device *hdev, int index)
+ { return true; }
+#endif
+
+/* USB autosuspend and autoresume */
+#ifdef CONFIG_PM_RUNTIME
+extern void usb_enable_autosuspend(struct usb_device *udev);
+extern void usb_disable_autosuspend(struct usb_device *udev);
+
+extern int usb_autopm_get_interface(struct usb_interface *intf);
+extern void usb_autopm_put_interface(struct usb_interface *intf);
+extern int usb_autopm_get_interface_async(struct usb_interface *intf);
+extern void usb_autopm_put_interface_async(struct usb_interface *intf);
+extern void usb_autopm_get_interface_no_resume(struct usb_interface *intf);
+extern void usb_autopm_put_interface_no_suspend(struct usb_interface *intf);
+
+static inline void usb_mark_last_busy(struct usb_device *udev)
+{
+ pm_runtime_mark_last_busy(&udev->dev);
+}
+
+#else
+
+static inline int usb_enable_autosuspend(struct usb_device *udev)
+{ return 0; }
+static inline int usb_disable_autosuspend(struct usb_device *udev)
+{ return 0; }
+
+static inline int usb_autopm_get_interface(struct usb_interface *intf)
+{ return 0; }
+static inline int usb_autopm_get_interface_async(struct usb_interface *intf)
+{ return 0; }
+
+static inline void usb_autopm_put_interface(struct usb_interface *intf)
+{ }
+static inline void usb_autopm_put_interface_async(struct usb_interface *intf)
+{ }
+static inline void usb_autopm_get_interface_no_resume(
+ struct usb_interface *intf)
+{ }
+static inline void usb_autopm_put_interface_no_suspend(
+ struct usb_interface *intf)
+{ }
+static inline void usb_mark_last_busy(struct usb_device *udev)
+{ }
+#endif
+
+extern int usb_disable_lpm(struct usb_device *udev);
+extern void usb_enable_lpm(struct usb_device *udev);
+/* Same as above, but these functions lock/unlock the bandwidth_mutex. */
+extern int usb_unlocked_disable_lpm(struct usb_device *udev);
+extern void usb_unlocked_enable_lpm(struct usb_device *udev);
+
+extern int usb_disable_ltm(struct usb_device *udev);
+extern void usb_enable_ltm(struct usb_device *udev);
+
+static inline bool usb_device_supports_ltm(struct usb_device *udev)
+{
+ if (udev->speed != USB_SPEED_SUPER || !udev->bos || !udev->bos->ss_cap)
+ return false;
+ return udev->bos->ss_cap->bmAttributes & USB_LTM_SUPPORT;
+}
+
+
+/*-------------------------------------------------------------------------*/
+
+/* for drivers using iso endpoints */
+extern int usb_get_current_frame_number(struct usb_device *usb_dev);
+
+/* Sets up a group of bulk endpoints to support multiple stream IDs. */
+extern int usb_alloc_streams(struct usb_interface *interface,
+ struct usb_host_endpoint **eps, unsigned int num_eps,
+ unsigned int num_streams, gfp_t mem_flags);
+
+/* Reverts a group of bulk endpoints back to not using stream IDs. */
+extern void usb_free_streams(struct usb_interface *interface,
+ struct usb_host_endpoint **eps, unsigned int num_eps,
+ gfp_t mem_flags);
+
+/* used these for multi-interface device registration */
+extern int usb_driver_claim_interface(struct usb_driver *driver,
+ struct usb_interface *iface, void *priv);
+
+/**
+ * usb_interface_claimed - returns true iff an interface is claimed
+ * @iface: the interface being checked
+ *
+ * Returns true (nonzero) iff the interface is claimed, else false (zero).
+ * Callers must own the driver model's usb bus readlock. So driver
+ * probe() entries don't need extra locking, but other call contexts
+ * may need to explicitly claim that lock.
+ *
+ */
+static inline int usb_interface_claimed(struct usb_interface *iface)
+{
+#ifndef __UBOOT__
+ return (iface->dev.driver != NULL);
+#else
+ return true;
+#endif
+}
+
+extern void usb_driver_release_interface(struct usb_driver *driver,
+ struct usb_interface *iface);
+const struct usb_device_id *usb_match_id(struct usb_interface *interface,
+ const struct usb_device_id *id);
+extern int usb_match_one_id(struct usb_interface *interface,
+ const struct usb_device_id *id);
+
+extern struct usb_interface *usb_find_interface(struct usb_driver *drv,
+ int minor);
+extern struct usb_interface *usb_ifnum_to_if(const struct usb_device *dev,
+ unsigned ifnum);
+extern struct usb_host_interface *usb_altnum_to_altsetting(
+ const struct usb_interface *intf, unsigned int altnum);
+extern struct usb_host_interface *usb_find_alt_setting(
+ struct usb_host_config *config,
+ unsigned int iface_num,
+ unsigned int alt_num);
+
+
+/**
+ * usb_make_path - returns stable device path in the usb tree
+ * @dev: the device whose path is being constructed
+ * @buf: where to put the string
+ * @size: how big is "buf"?
+ *
+ * Returns length of the string (> 0) or negative if size was too small.
+ *
+ * This identifier is intended to be "stable", reflecting physical paths in
+ * hardware such as physical bus addresses for host controllers or ports on
+ * USB hubs. That makes it stay the same until systems are physically
+ * reconfigured, by re-cabling a tree of USB devices or by moving USB host
+ * controllers. Adding and removing devices, including virtual root hubs
+ * in host controller driver modules, does not change these path identifiers;
+ * neither does rebooting or re-enumerating. These are more useful identifiers
+ * than changeable ("unstable") ones like bus numbers or device addresses.
+ *
+ * With a partial exception for devices connected to USB 2.0 root hubs, these
+ * identifiers are also predictable. So long as the device tree isn't changed,
+ * plugging any USB device into a given hub port always gives it the same path.
+ * Because of the use of "companion" controllers, devices connected to ports on
+ * USB 2.0 root hubs (EHCI host controllers) will get one path ID if they are
+ * high speed, and a different one if they are full or low speed.
+ */
+static inline int usb_make_path(struct usb_device *dev, char *buf, size_t size)
+{
+ int actual;
+ actual = snprintf(buf, size, "usb-%s-%s", dev->bus->bus_name,
+ dev->devpath);
+ return (actual >= (int)size) ? -1 : actual;
+}
+
+/*-------------------------------------------------------------------------*/
+
+#define USB_DEVICE_ID_MATCH_DEVICE \
+ (USB_DEVICE_ID_MATCH_VENDOR | USB_DEVICE_ID_MATCH_PRODUCT)
+#define USB_DEVICE_ID_MATCH_DEV_RANGE \
+ (USB_DEVICE_ID_MATCH_DEV_LO | USB_DEVICE_ID_MATCH_DEV_HI)
+#define USB_DEVICE_ID_MATCH_DEVICE_AND_VERSION \
+ (USB_DEVICE_ID_MATCH_DEVICE | USB_DEVICE_ID_MATCH_DEV_RANGE)
+#define USB_DEVICE_ID_MATCH_DEV_INFO \
+ (USB_DEVICE_ID_MATCH_DEV_CLASS | \
+ USB_DEVICE_ID_MATCH_DEV_SUBCLASS | \
+ USB_DEVICE_ID_MATCH_DEV_PROTOCOL)
+#define USB_DEVICE_ID_MATCH_INT_INFO \
+ (USB_DEVICE_ID_MATCH_INT_CLASS | \
+ USB_DEVICE_ID_MATCH_INT_SUBCLASS | \
+ USB_DEVICE_ID_MATCH_INT_PROTOCOL)
+
+/**
+ * USB_DEVICE - macro used to describe a specific usb device
+ * @vend: the 16 bit USB Vendor ID
+ * @prod: the 16 bit USB Product ID
+ *
+ * This macro is used to create a struct usb_device_id that matches a
+ * specific device.
+ */
+#define USB_DEVICE(vend, prod) \
+ .match_flags = USB_DEVICE_ID_MATCH_DEVICE, \
+ .idVendor = (vend), \
+ .idProduct = (prod)
+/**
+ * USB_DEVICE_VER - describe a specific usb device with a version range
+ * @vend: the 16 bit USB Vendor ID
+ * @prod: the 16 bit USB Product ID
+ * @lo: the bcdDevice_lo value
+ * @hi: the bcdDevice_hi value
+ *
+ * This macro is used to create a struct usb_device_id that matches a
+ * specific device, with a version range.
+ */
+#define USB_DEVICE_VER(vend, prod, lo, hi) \
+ .match_flags = USB_DEVICE_ID_MATCH_DEVICE_AND_VERSION, \
+ .idVendor = (vend), \
+ .idProduct = (prod), \
+ .bcdDevice_lo = (lo), \
+ .bcdDevice_hi = (hi)
+
+/**
+ * USB_DEVICE_INTERFACE_CLASS - describe a usb device with a specific interface class
+ * @vend: the 16 bit USB Vendor ID
+ * @prod: the 16 bit USB Product ID
+ * @cl: bInterfaceClass value
+ *
+ * This macro is used to create a struct usb_device_id that matches a
+ * specific interface class of devices.
+ */
+#define USB_DEVICE_INTERFACE_CLASS(vend, prod, cl) \
+ .match_flags = USB_DEVICE_ID_MATCH_DEVICE | \
+ USB_DEVICE_ID_MATCH_INT_CLASS, \
+ .idVendor = (vend), \
+ .idProduct = (prod), \
+ .bInterfaceClass = (cl)
+
+/**
+ * USB_DEVICE_INTERFACE_PROTOCOL - describe a usb device with a specific interface protocol
+ * @vend: the 16 bit USB Vendor ID
+ * @prod: the 16 bit USB Product ID
+ * @pr: bInterfaceProtocol value
+ *
+ * This macro is used to create a struct usb_device_id that matches a
+ * specific interface protocol of devices.
+ */
+#define USB_DEVICE_INTERFACE_PROTOCOL(vend, prod, pr) \
+ .match_flags = USB_DEVICE_ID_MATCH_DEVICE | \
+ USB_DEVICE_ID_MATCH_INT_PROTOCOL, \
+ .idVendor = (vend), \
+ .idProduct = (prod), \
+ .bInterfaceProtocol = (pr)
+
+/**
+ * USB_DEVICE_INTERFACE_NUMBER - describe a usb device with a specific interface number
+ * @vend: the 16 bit USB Vendor ID
+ * @prod: the 16 bit USB Product ID
+ * @num: bInterfaceNumber value
+ *
+ * This macro is used to create a struct usb_device_id that matches a
+ * specific interface number of devices.
+ */
+#define USB_DEVICE_INTERFACE_NUMBER(vend, prod, num) \
+ .match_flags = USB_DEVICE_ID_MATCH_DEVICE | \
+ USB_DEVICE_ID_MATCH_INT_NUMBER, \
+ .idVendor = (vend), \
+ .idProduct = (prod), \
+ .bInterfaceNumber = (num)
+
+/**
+ * USB_DEVICE_INFO - macro used to describe a class of usb devices
+ * @cl: bDeviceClass value
+ * @sc: bDeviceSubClass value
+ * @pr: bDeviceProtocol value
+ *
+ * This macro is used to create a struct usb_device_id that matches a
+ * specific class of devices.
+ */
+#define USB_DEVICE_INFO(cl, sc, pr) \
+ .match_flags = USB_DEVICE_ID_MATCH_DEV_INFO, \
+ .bDeviceClass = (cl), \
+ .bDeviceSubClass = (sc), \
+ .bDeviceProtocol = (pr)
+
+/**
+ * USB_INTERFACE_INFO - macro used to describe a class of usb interfaces
+ * @cl: bInterfaceClass value
+ * @sc: bInterfaceSubClass value
+ * @pr: bInterfaceProtocol value
+ *
+ * This macro is used to create a struct usb_device_id that matches a
+ * specific class of interfaces.
+ */
+#define USB_INTERFACE_INFO(cl, sc, pr) \
+ .match_flags = USB_DEVICE_ID_MATCH_INT_INFO, \
+ .bInterfaceClass = (cl), \
+ .bInterfaceSubClass = (sc), \
+ .bInterfaceProtocol = (pr)
+
+/**
+ * USB_DEVICE_AND_INTERFACE_INFO - describe a specific usb device with a class of usb interfaces
+ * @vend: the 16 bit USB Vendor ID
+ * @prod: the 16 bit USB Product ID
+ * @cl: bInterfaceClass value
+ * @sc: bInterfaceSubClass value
+ * @pr: bInterfaceProtocol value
+ *
+ * This macro is used to create a struct usb_device_id that matches a
+ * specific device with a specific class of interfaces.
+ *
+ * This is especially useful when explicitly matching devices that have
+ * vendor specific bDeviceClass values, but standards-compliant interfaces.
+ */
+#define USB_DEVICE_AND_INTERFACE_INFO(vend, prod, cl, sc, pr) \
+ .match_flags = USB_DEVICE_ID_MATCH_INT_INFO \
+ | USB_DEVICE_ID_MATCH_DEVICE, \
+ .idVendor = (vend), \
+ .idProduct = (prod), \
+ .bInterfaceClass = (cl), \
+ .bInterfaceSubClass = (sc), \
+ .bInterfaceProtocol = (pr)
+
+/**
+ * USB_VENDOR_AND_INTERFACE_INFO - describe a specific usb vendor with a class of usb interfaces
+ * @vend: the 16 bit USB Vendor ID
+ * @cl: bInterfaceClass value
+ * @sc: bInterfaceSubClass value
+ * @pr: bInterfaceProtocol value
+ *
+ * This macro is used to create a struct usb_device_id that matches a
+ * specific vendor with a specific class of interfaces.
+ *
+ * This is especially useful when explicitly matching devices that have
+ * vendor specific bDeviceClass values, but standards-compliant interfaces.
+ */
+#define USB_VENDOR_AND_INTERFACE_INFO(vend, cl, sc, pr) \
+ .match_flags = USB_DEVICE_ID_MATCH_INT_INFO \
+ | USB_DEVICE_ID_MATCH_VENDOR, \
+ .idVendor = (vend), \
+ .bInterfaceClass = (cl), \
+ .bInterfaceSubClass = (sc), \
+ .bInterfaceProtocol = (pr)
+
+/* ----------------------------------------------------------------------- */
+
+/* Stuff for dynamic usb ids */
+struct usb_dynids {
+ spinlock_t lock;
+ struct list_head list;
+};
+
+struct usb_dynid {
+ struct list_head node;
+ struct usb_device_id id;
+};
+
+extern ssize_t usb_store_new_id(struct usb_dynids *dynids,
+ struct device_driver *driver,
+ const char *buf, size_t count);
+
+extern ssize_t usb_show_dynids(struct usb_dynids *dynids, char *buf);
+
+/**
+ * struct usbdrv_wrap - wrapper for driver-model structure
+ * @driver: The driver-model core driver structure.
+ * @for_devices: Non-zero for device drivers, 0 for interface drivers.
+ */
+struct usbdrv_wrap {
+ struct device_driver driver;
+ int for_devices;
+};
+
+/**
+ * struct usb_driver - identifies USB interface driver to usbcore
+ * @name: The driver name should be unique among USB drivers,
+ * and should normally be the same as the module name.
+ * @probe: Called to see if the driver is willing to manage a particular
+ * interface on a device. If it is, probe returns zero and uses
+ * usb_set_intfdata() to associate driver-specific data with the
+ * interface. It may also use usb_set_interface() to specify the
+ * appropriate altsetting. If unwilling to manage the interface,
+ * return -ENODEV, if genuine IO errors occurred, an appropriate
+ * negative errno value.
+ * @disconnect: Called when the interface is no longer accessible, usually
+ * because its device has been (or is being) disconnected or the
+ * driver module is being unloaded.
+ * @unlocked_ioctl: Used for drivers that want to talk to userspace through
+ * the "usbfs" filesystem. This lets devices provide ways to
+ * expose information to user space regardless of where they
+ * do (or don't) show up otherwise in the filesystem.
+ * @suspend: Called when the device is going to be suspended by the
+ * system either from system sleep or runtime suspend context. The
+ * return value will be ignored in system sleep context, so do NOT
+ * try to continue using the device if suspend fails in this case.
+ * Instead, let the resume or reset-resume routine recover from
+ * the failure.
+ * @resume: Called when the device is being resumed by the system.
+ * @reset_resume: Called when the suspended device has been reset instead
+ * of being resumed.
+ * @pre_reset: Called by usb_reset_device() when the device is about to be
+ * reset. This routine must not return until the driver has no active
+ * URBs for the device, and no more URBs may be submitted until the
+ * post_reset method is called.
+ * @post_reset: Called by usb_reset_device() after the device
+ * has been reset
+ * @id_table: USB drivers use ID table to support hotplugging.
+ * Export this with MODULE_DEVICE_TABLE(usb,...). This must be set
+ * or your driver's probe function will never get called.
+ * @dynids: used internally to hold the list of dynamically added device
+ * ids for this driver.
+ * @drvwrap: Driver-model core structure wrapper.
+ * @no_dynamic_id: if set to 1, the USB core will not allow dynamic ids to be
+ * added to this driver by preventing the sysfs file from being created.
+ * @supports_autosuspend: if set to 0, the USB core will not allow autosuspend
+ * for interfaces bound to this driver.
+ * @soft_unbind: if set to 1, the USB core will not kill URBs and disable
+ * endpoints before calling the driver's disconnect method.
+ * @disable_hub_initiated_lpm: if set to 0, the USB core will not allow hubs
+ * to initiate lower power link state transitions when an idle timeout
+ * occurs. Device-initiated USB 3.0 link PM will still be allowed.
+ *
+ * USB interface drivers must provide a name, probe() and disconnect()
+ * methods, and an id_table. Other driver fields are optional.
+ *
+ * The id_table is used in hotplugging. It holds a set of descriptors,
+ * and specialized data may be associated with each entry. That table
+ * is used by both user and kernel mode hotplugging support.
+ *
+ * The probe() and disconnect() methods are called in a context where
+ * they can sleep, but they should avoid abusing the privilege. Most
+ * work to connect to a device should be done when the device is opened,
+ * and undone at the last close. The disconnect code needs to address
+ * concurrency issues with respect to open() and close() methods, as
+ * well as forcing all pending I/O requests to complete (by unlinking
+ * them as necessary, and blocking until the unlinks complete).
+ */
+struct usb_driver {
+ const char *name;
+
+ int (*probe) (struct usb_interface *intf,
+ const struct usb_device_id *id);
+
+ void (*disconnect) (struct usb_interface *intf);
+
+ int (*unlocked_ioctl) (struct usb_interface *intf, unsigned int code,
+ void *buf);
+#ifdef CONFIG_PM
+ int (*suspend) (struct usb_interface *intf, pm_message_t message);
+ int (*resume) (struct usb_interface *intf);
+ int (*reset_resume)(struct usb_interface *intf);
+#endif
+ int (*pre_reset)(struct usb_interface *intf);
+ int (*post_reset)(struct usb_interface *intf);
+
+ const struct usb_device_id *id_table;
+
+ struct usb_dynids dynids;
+ struct usbdrv_wrap drvwrap;
+ unsigned int no_dynamic_id:1;
+ unsigned int supports_autosuspend:1;
+ unsigned int disable_hub_initiated_lpm:1;
+ unsigned int soft_unbind:1;
+};
+#define to_usb_driver(d) container_of(d, struct usb_driver, drvwrap.driver)
+
+/**
+ * struct usb_device_driver - identifies USB device driver to usbcore
+ * @name: The driver name should be unique among USB drivers,
+ * and should normally be the same as the module name.
+ * @probe: Called to see if the driver is willing to manage a particular
+ * device. If it is, probe returns zero and uses dev_set_drvdata()
+ * to associate driver-specific data with the device. If unwilling
+ * to manage the device, return a negative errno value.
+ * @disconnect: Called when the device is no longer accessible, usually
+ * because it has been (or is being) disconnected or the driver's
+ * module is being unloaded.
+ * @suspend: Called when the device is going to be suspended by the system.
+ * @resume: Called when the device is being resumed by the system.
+ * @drvwrap: Driver-model core structure wrapper.
+ * @supports_autosuspend: if set to 0, the USB core will not allow autosuspend
+ * for devices bound to this driver.
+ *
+ * USB drivers must provide all the fields listed above except drvwrap.
+ */
+struct usb_device_driver {
+ const char *name;
+
+ int (*probe) (struct usb_device *udev);
+ void (*disconnect) (struct usb_device *udev);
+#ifdef CONFIG_PM
+ int (*suspend) (struct usb_device *udev, pm_message_t message);
+ int (*resume) (struct usb_device *udev, pm_message_t message);
+#endif
+ struct usbdrv_wrap drvwrap;
+ unsigned int supports_autosuspend:1;
+};
+#define to_usb_device_driver(d) container_of(d, struct usb_device_driver, \
+ drvwrap.driver)
+
+extern struct bus_type usb_bus_type;
+
+/**
+ * struct usb_class_driver - identifies a USB driver that wants to use the USB major number
+ * @name: the usb class device name for this driver. Will show up in sysfs.
+ * @devnode: Callback to provide a naming hint for a possible
+ * device node to create.
+ * @fops: pointer to the struct file_operations of this driver.
+ * @minor_base: the start of the minor range for this driver.
+ *
+ * This structure is used for the usb_register_dev() and
+ * usb_unregister_dev() functions, to consolidate a number of the
+ * parameters used for them.
+ */
+struct usb_class_driver {
+ char *name;
+ char *(*devnode)(struct device *dev, umode_t *mode);
+ const struct file_operations *fops;
+ int minor_base;
+};
+#ifndef __UBOOT__
+/*
+ * use these in module_init()/module_exit()
+ * and don't forget MODULE_DEVICE_TABLE(usb, ...)
+ */
+extern int usb_register_driver(struct usb_driver *, struct module *,
+ const char *);
+
+/* use a define to avoid include chaining to get THIS_MODULE & friends */
+#define usb_register(driver) \
+ usb_register_driver(driver, THIS_MODULE, KBUILD_MODNAME)
+
+extern void usb_deregister(struct usb_driver *);
+
+/**
+ * module_usb_driver() - Helper macro for registering a USB driver
+ * @__usb_driver: usb_driver struct
+ *
+ * Helper macro for USB drivers which do not do anything special in module
+ * init/exit. This eliminates a lot of boilerplate. Each module may only
+ * use this macro once, and calling it replaces module_init() and module_exit()
+ */
+#define module_usb_driver(__usb_driver) \
+ module_driver(__usb_driver, usb_register, \
+ usb_deregister)
+
+extern int usb_register_device_driver(struct usb_device_driver *,
+ struct module *);
+extern void usb_deregister_device_driver(struct usb_device_driver *);
+
+extern int usb_register_dev(struct usb_interface *intf,
+ struct usb_class_driver *class_driver);
+extern void usb_deregister_dev(struct usb_interface *intf,
+ struct usb_class_driver *class_driver);
+
+extern int usb_disabled(void);
+#endif /* __UBOOT__ */
+/* ----------------------------------------------------------------------- */
+
+/*
+ * URB support, for asynchronous request completions
+ */
+
+/*
+ * urb->transfer_flags:
+ *
+ * Note: URB_DIR_IN/OUT is automatically set in usb_submit_urb().
+ */
+#define URB_SHORT_NOT_OK 0x0001 /* report short reads as errors */
+#define URB_ISO_ASAP 0x0002 /* iso-only; use the first unexpired
+ * slot in the schedule */
+#define URB_NO_TRANSFER_DMA_MAP 0x0004 /* urb->transfer_dma valid on submit */
+#define URB_NO_FSBR 0x0020 /* UHCI-specific */
+#define URB_ZERO_PACKET 0x0040 /* Finish bulk OUT with short packet */
+#define URB_NO_INTERRUPT 0x0080 /* HINT: no non-error interrupt
+ * needed */
+#define URB_FREE_BUFFER 0x0100 /* Free transfer buffer with the URB */
+
+/* The following flags are used internally by usbcore and HCDs */
+#define URB_DIR_IN 0x0200 /* Transfer from device to host */
+#define URB_DIR_OUT 0
+#define URB_DIR_MASK URB_DIR_IN
+
+#define URB_DMA_MAP_SINGLE 0x00010000 /* Non-scatter-gather mapping */
+#define URB_DMA_MAP_PAGE 0x00020000 /* HCD-unsupported S-G */
+#define URB_DMA_MAP_SG 0x00040000 /* HCD-supported S-G */
+#define URB_MAP_LOCAL 0x00080000 /* HCD-local-memory mapping */
+#define URB_SETUP_MAP_SINGLE 0x00100000 /* Setup packet DMA mapped */
+#define URB_SETUP_MAP_LOCAL 0x00200000 /* HCD-local setup packet */
+#define URB_DMA_SG_COMBINED 0x00400000 /* S-G entries were combined */
+#define URB_ALIGNED_TEMP_BUFFER 0x00800000 /* Temp buffer was alloc'd */
+
+struct usb_iso_packet_descriptor {
+ unsigned int offset;
+ unsigned int length; /* expected length */
+ unsigned int actual_length;
+ int status;
+};
+
+struct urb;
+
+struct usb_anchor {
+ struct list_head urb_list;
+#ifndef __UBOOT__
+ wait_queue_head_t wait;
+#endif
+ spinlock_t lock;
+ unsigned int poisoned:1;
+};
+
+static inline void init_usb_anchor(struct usb_anchor *anchor)
+{
+ INIT_LIST_HEAD(&anchor->urb_list);
+#ifndef __UBOOT__
+ init_waitqueue_head(&anchor->wait);
+#endif
+ spin_lock_init(&anchor->lock);
+}
+
+typedef void (*usb_complete_t)(struct urb *);
+
+/**
+ * struct urb - USB Request Block
+ * @urb_list: For use by current owner of the URB.
+ * @anchor_list: membership in the list of an anchor
+ * @anchor: to anchor URBs to a common mooring
+ * @ep: Points to the endpoint's data structure. Will eventually
+ * replace @pipe.
+ * @pipe: Holds endpoint number, direction, type, and more.
+ * Create these values with the eight macros available;
+ * usb_{snd,rcv}TYPEpipe(dev,endpoint), where the TYPE is "ctrl"
+ * (control), "bulk", "int" (interrupt), or "iso" (isochronous).
+ * For example usb_sndbulkpipe() or usb_rcvintpipe(). Endpoint
+ * numbers range from zero to fifteen. Note that "in" endpoint two
+ * is a different endpoint (and pipe) from "out" endpoint two.
+ * The current configuration controls the existence, type, and
+ * maximum packet size of any given endpoint.
+ * @stream_id: the endpoint's stream ID for bulk streams
+ * @dev: Identifies the USB device to perform the request.
+ * @status: This is read in non-iso completion functions to get the
+ * status of the particular request. ISO requests only use it
+ * to tell whether the URB was unlinked; detailed status for
+ * each frame is in the fields of the iso_frame-desc.
+ * @transfer_flags: A variety of flags may be used to affect how URB
+ * submission, unlinking, or operation are handled. Different
+ * kinds of URB can use different flags.
+ * @transfer_buffer: This identifies the buffer to (or from) which the I/O
+ * request will be performed unless URB_NO_TRANSFER_DMA_MAP is set
+ * (however, do not leave garbage in transfer_buffer even then).
+ * This buffer must be suitable for DMA; allocate it with
+ * kmalloc() or equivalent. For transfers to "in" endpoints, contents
+ * of this buffer will be modified. This buffer is used for the data
+ * stage of control transfers.
+ * @transfer_dma: When transfer_flags includes URB_NO_TRANSFER_DMA_MAP,
+ * the device driver is saying that it provided this DMA address,
+ * which the host controller driver should use in preference to the
+ * transfer_buffer.
+ * @sg: scatter gather buffer list
+ * @num_mapped_sgs: (internal) number of mapped sg entries
+ * @num_sgs: number of entries in the sg list
+ * @transfer_buffer_length: How big is transfer_buffer. The transfer may
+ * be broken up into chunks according to the current maximum packet
+ * size for the endpoint, which is a function of the configuration
+ * and is encoded in the pipe. When the length is zero, neither
+ * transfer_buffer nor transfer_dma is used.
+ * @actual_length: This is read in non-iso completion functions, and
+ * it tells how many bytes (out of transfer_buffer_length) were
+ * transferred. It will normally be the same as requested, unless
+ * either an error was reported or a short read was performed.
+ * The URB_SHORT_NOT_OK transfer flag may be used to make such
+ * short reads be reported as errors.
+ * @setup_packet: Only used for control transfers, this points to eight bytes
+ * of setup data. Control transfers always start by sending this data
+ * to the device. Then transfer_buffer is read or written, if needed.
+ * @setup_dma: DMA pointer for the setup packet. The caller must not use
+ * this field; setup_packet must point to a valid buffer.
+ * @start_frame: Returns the initial frame for isochronous transfers.
+ * @number_of_packets: Lists the number of ISO transfer buffers.
+ * @interval: Specifies the polling interval for interrupt or isochronous
+ * transfers. The units are frames (milliseconds) for full and low
+ * speed devices, and microframes (1/8 millisecond) for highspeed
+ * and SuperSpeed devices.
+ * @error_count: Returns the number of ISO transfers that reported errors.
+ * @context: For use in completion functions. This normally points to
+ * request-specific driver context.
+ * @complete: Completion handler. This URB is passed as the parameter to the
+ * completion function. The completion function may then do what
+ * it likes with the URB, including resubmitting or freeing it.
+ * @iso_frame_desc: Used to provide arrays of ISO transfer buffers and to
+ * collect the transfer status for each buffer.
+ *
+ * This structure identifies USB transfer requests. URBs must be allocated by
+ * calling usb_alloc_urb() and freed with a call to usb_free_urb().
+ * Initialization may be done using various usb_fill_*_urb() functions. URBs
+ * are submitted using usb_submit_urb(), and pending requests may be canceled
+ * using usb_unlink_urb() or usb_kill_urb().
+ *
+ * Data Transfer Buffers:
+ *
+ * Normally drivers provide I/O buffers allocated with kmalloc() or otherwise
+ * taken from the general page pool. That is provided by transfer_buffer
+ * (control requests also use setup_packet), and host controller drivers
+ * perform a dma mapping (and unmapping) for each buffer transferred. Those
+ * mapping operations can be expensive on some platforms (perhaps using a dma
+ * bounce buffer or talking to an IOMMU),
+ * although they're cheap on commodity x86 and ppc hardware.
+ *
+ * Alternatively, drivers may pass the URB_NO_TRANSFER_DMA_MAP transfer flag,
+ * which tells the host controller driver that no such mapping is needed for
+ * the transfer_buffer since
+ * the device driver is DMA-aware. For example, a device driver might
+ * allocate a DMA buffer with usb_alloc_coherent() or call usb_buffer_map().
+ * When this transfer flag is provided, host controller drivers will
+ * attempt to use the dma address found in the transfer_dma
+ * field rather than determining a dma address themselves.
+ *
+ * Note that transfer_buffer must still be set if the controller
+ * does not support DMA (as indicated by bus.uses_dma) and when talking
+ * to root hub. If you have to trasfer between highmem zone and the device
+ * on such controller, create a bounce buffer or bail out with an error.
+ * If transfer_buffer cannot be set (is in highmem) and the controller is DMA
+ * capable, assign NULL to it, so that usbmon knows not to use the value.
+ * The setup_packet must always be set, so it cannot be located in highmem.
+ *
+ * Initialization:
+ *
+ * All URBs submitted must initialize the dev, pipe, transfer_flags (may be
+ * zero), and complete fields. All URBs must also initialize
+ * transfer_buffer and transfer_buffer_length. They may provide the
+ * URB_SHORT_NOT_OK transfer flag, indicating that short reads are
+ * to be treated as errors; that flag is invalid for write requests.
+ *
+ * Bulk URBs may
+ * use the URB_ZERO_PACKET transfer flag, indicating that bulk OUT transfers
+ * should always terminate with a short packet, even if it means adding an
+ * extra zero length packet.
+ *
+ * Control URBs must provide a valid pointer in the setup_packet field.
+ * Unlike the transfer_buffer, the setup_packet may not be mapped for DMA
+ * beforehand.
+ *
+ * Interrupt URBs must provide an interval, saying how often (in milliseconds
+ * or, for highspeed devices, 125 microsecond units)
+ * to poll for transfers. After the URB has been submitted, the interval
+ * field reflects how the transfer was actually scheduled.
+ * The polling interval may be more frequent than requested.
+ * For example, some controllers have a maximum interval of 32 milliseconds,
+ * while others support intervals of up to 1024 milliseconds.
+ * Isochronous URBs also have transfer intervals. (Note that for isochronous
+ * endpoints, as well as high speed interrupt endpoints, the encoding of
+ * the transfer interval in the endpoint descriptor is logarithmic.
+ * Device drivers must convert that value to linear units themselves.)
+ *
+ * If an isochronous endpoint queue isn't already running, the host
+ * controller will schedule a new URB to start as soon as bandwidth
+ * utilization allows. If the queue is running then a new URB will be
+ * scheduled to start in the first transfer slot following the end of the
+ * preceding URB, if that slot has not already expired. If the slot has
+ * expired (which can happen when IRQ delivery is delayed for a long time),
+ * the scheduling behavior depends on the URB_ISO_ASAP flag. If the flag
+ * is clear then the URB will be scheduled to start in the expired slot,
+ * implying that some of its packets will not be transferred; if the flag
+ * is set then the URB will be scheduled in the first unexpired slot,
+ * breaking the queue's synchronization. Upon URB completion, the
+ * start_frame field will be set to the (micro)frame number in which the
+ * transfer was scheduled. Ranges for frame counter values are HC-specific
+ * and can go from as low as 256 to as high as 65536 frames.
+ *
+ * Isochronous URBs have a different data transfer model, in part because
+ * the quality of service is only "best effort". Callers provide specially
+ * allocated URBs, with number_of_packets worth of iso_frame_desc structures
+ * at the end. Each such packet is an individual ISO transfer. Isochronous
+ * URBs are normally queued, submitted by drivers to arrange that
+ * transfers are at least double buffered, and then explicitly resubmitted
+ * in completion handlers, so
+ * that data (such as audio or video) streams at as constant a rate as the
+ * host controller scheduler can support.
+ *
+ * Completion Callbacks:
+ *
+ * The completion callback is made in_interrupt(), and one of the first
+ * things that a completion handler should do is check the status field.
+ * The status field is provided for all URBs. It is used to report
+ * unlinked URBs, and status for all non-ISO transfers. It should not
+ * be examined before the URB is returned to the completion handler.
+ *
+ * The context field is normally used to link URBs back to the relevant
+ * driver or request state.
+ *
+ * When the completion callback is invoked for non-isochronous URBs, the
+ * actual_length field tells how many bytes were transferred. This field
+ * is updated even when the URB terminated with an error or was unlinked.
+ *
+ * ISO transfer status is reported in the status and actual_length fields
+ * of the iso_frame_desc array, and the number of errors is reported in
+ * error_count. Completion callbacks for ISO transfers will normally
+ * (re)submit URBs to ensure a constant transfer rate.
+ *
+ * Note that even fields marked "public" should not be touched by the driver
+ * when the urb is owned by the hcd, that is, since the call to
+ * usb_submit_urb() till the entry into the completion routine.
+ */
+struct urb {
+#ifndef __UBOOT__
+ /* private: usb core and host controller only fields in the urb */
+ struct kref kref; /* reference count of the URB */
+#endif
+ void *hcpriv; /* private data for host controller */
+#ifndef __UBOOT__
+ atomic_t use_count; /* concurrent submissions counter */
+ atomic_t reject; /* submissions will fail */
+#endif
+ int unlinked; /* unlink error code */
+
+ /* public: documented fields in the urb that can be used by drivers */
+ struct list_head urb_list; /* list head for use by the urb's
+ * current owner */
+ struct list_head anchor_list; /* the URB may be anchored */
+
+ struct usb_anchor *anchor;
+ struct usb_device *dev; /* (in) pointer to associated device */
+ struct usb_host_endpoint *ep; /* (internal) pointer to endpoint */
+ unsigned int pipe; /* (in) pipe information */
+ unsigned int stream_id; /* (in) stream ID */
+ int status; /* (return) non-ISO status */
+ unsigned int transfer_flags; /* (in) URB_SHORT_NOT_OK | ...*/
+ void *transfer_buffer; /* (in) associated data buffer */
+ dma_addr_t transfer_dma; /* (in) dma addr for transfer_buffer */
+#ifndef __UBOOT__
+ struct scatterlist *sg; /* (in) scatter gather buffer list */
+#endif
+ int num_mapped_sgs; /* (internal) mapped sg entries */
+ int num_sgs; /* (in) number of entries in the sg list */
+ u32 transfer_buffer_length; /* (in) data buffer length */
+ u32 actual_length; /* (return) actual transfer length */
+ unsigned char *setup_packet; /* (in) setup packet (control only) */
+#ifndef __UBOOT__
+ dma_addr_t setup_dma; /* (in) dma addr for setup_packet */
+#endif
+ int start_frame; /* (modify) start frame (ISO) */
+ int number_of_packets; /* (in) number of ISO packets */
+ int interval; /* (modify) transfer interval
+ * (INT/ISO) */
+ int error_count; /* (return) number of ISO errors */
+ void *context; /* (in) context for completion */
+ usb_complete_t complete; /* (in) completion routine */
+ struct usb_iso_packet_descriptor iso_frame_desc[0];
+ /* (in) ISO ONLY */
+};
+
+/* ----------------------------------------------------------------------- */
+
+/**
+ * usb_fill_control_urb - initializes a control urb
+ * @urb: pointer to the urb to initialize.
+ * @dev: pointer to the struct usb_device for this urb.
+ * @pipe: the endpoint pipe
+ * @setup_packet: pointer to the setup_packet buffer
+ * @transfer_buffer: pointer to the transfer buffer
+ * @buffer_length: length of the transfer buffer
+ * @complete_fn: pointer to the usb_complete_t function
+ * @context: what to set the urb context to.
+ *
+ * Initializes a control urb with the proper information needed to submit
+ * it to a device.
+ */
+static inline void usb_fill_control_urb(struct urb *urb,
+ struct usb_device *dev,
+ unsigned int pipe,
+ unsigned char *setup_packet,
+ void *transfer_buffer,
+ int buffer_length,
+ usb_complete_t complete_fn,
+ void *context)
+{
+ urb->dev = dev;
+ urb->pipe = pipe;
+ urb->setup_packet = setup_packet;
+ urb->transfer_buffer = transfer_buffer;
+ urb->transfer_buffer_length = buffer_length;
+ urb->complete = complete_fn;
+ urb->context = context;
+}
+
+/**
+ * usb_fill_bulk_urb - macro to help initialize a bulk urb
+ * @urb: pointer to the urb to initialize.
+ * @dev: pointer to the struct usb_device for this urb.
+ * @pipe: the endpoint pipe
+ * @transfer_buffer: pointer to the transfer buffer
+ * @buffer_length: length of the transfer buffer
+ * @complete_fn: pointer to the usb_complete_t function
+ * @context: what to set the urb context to.
+ *
+ * Initializes a bulk urb with the proper information needed to submit it
+ * to a device.
+ */
+static inline void usb_fill_bulk_urb(struct urb *urb,
+ struct usb_device *dev,
+ unsigned int pipe,
+ void *transfer_buffer,
+ int buffer_length,
+ usb_complete_t complete_fn,
+ void *context)
+{
+ urb->dev = dev;
+ urb->pipe = pipe;
+ urb->transfer_buffer = transfer_buffer;
+ urb->transfer_buffer_length = buffer_length;
+ urb->complete = complete_fn;
+ urb->context = context;
+}
+
+/**
+ * usb_fill_int_urb - macro to help initialize a interrupt urb
+ * @urb: pointer to the urb to initialize.
+ * @dev: pointer to the struct usb_device for this urb.
+ * @pipe: the endpoint pipe
+ * @transfer_buffer: pointer to the transfer buffer
+ * @buffer_length: length of the transfer buffer
+ * @complete_fn: pointer to the usb_complete_t function
+ * @context: what to set the urb context to.
+ * @interval: what to set the urb interval to, encoded like
+ * the endpoint descriptor's bInterval value.
+ *
+ * Initializes a interrupt urb with the proper information needed to submit
+ * it to a device.
+ *
+ * Note that High Speed and SuperSpeed interrupt endpoints use a logarithmic
+ * encoding of the endpoint interval, and express polling intervals in
+ * microframes (eight per millisecond) rather than in frames (one per
+ * millisecond).
+ *
+ * Wireless USB also uses the logarithmic encoding, but specifies it in units of
+ * 128us instead of 125us. For Wireless USB devices, the interval is passed
+ * through to the host controller, rather than being translated into microframe
+ * units.
+ */
+static inline void usb_fill_int_urb(struct urb *urb,
+ struct usb_device *dev,
+ unsigned int pipe,
+ void *transfer_buffer,
+ int buffer_length,
+ usb_complete_t complete_fn,
+ void *context,
+ int interval)
+{
+ urb->dev = dev;
+ urb->pipe = pipe;
+ urb->transfer_buffer = transfer_buffer;
+ urb->transfer_buffer_length = buffer_length;
+ urb->complete = complete_fn;
+ urb->context = context;
+ if (dev->speed == USB_SPEED_HIGH || dev->speed == USB_SPEED_SUPER)
+ urb->interval = 1 << (interval - 1);
+ else
+ urb->interval = interval;
+ urb->start_frame = -1;
+}
+
+extern void usb_init_urb(struct urb *urb);
+extern struct urb *usb_alloc_urb(int iso_packets, gfp_t mem_flags);
+extern void usb_free_urb(struct urb *urb);
+#define usb_put_urb usb_free_urb
+extern struct urb *usb_get_urb(struct urb *urb);
+extern int usb_submit_urb(struct urb *urb, gfp_t mem_flags);
+extern int usb_unlink_urb(struct urb *urb);
+extern void usb_kill_urb(struct urb *urb);
+extern void usb_poison_urb(struct urb *urb);
+extern void usb_unpoison_urb(struct urb *urb);
+extern void usb_block_urb(struct urb *urb);
+extern void usb_kill_anchored_urbs(struct usb_anchor *anchor);
+extern void usb_poison_anchored_urbs(struct usb_anchor *anchor);
+extern void usb_unpoison_anchored_urbs(struct usb_anchor *anchor);
+extern void usb_unlink_anchored_urbs(struct usb_anchor *anchor);
+extern void usb_anchor_urb(struct urb *urb, struct usb_anchor *anchor);
+extern void usb_unanchor_urb(struct urb *urb);
+extern int usb_wait_anchor_empty_timeout(struct usb_anchor *anchor,
+ unsigned int timeout);
+extern struct urb *usb_get_from_anchor(struct usb_anchor *anchor);
+extern void usb_scuttle_anchored_urbs(struct usb_anchor *anchor);
+extern int usb_anchor_empty(struct usb_anchor *anchor);
+
+#define usb_unblock_urb usb_unpoison_urb
+
+/**
+ * usb_urb_dir_in - check if an URB describes an IN transfer
+ * @urb: URB to be checked
+ *
+ * Returns 1 if @urb describes an IN transfer (device-to-host),
+ * otherwise 0.
+ */
+static inline int usb_urb_dir_in(struct urb *urb)
+{
+ return (urb->transfer_flags & URB_DIR_MASK) == URB_DIR_IN;
+}
+
+/**
+ * usb_urb_dir_out - check if an URB describes an OUT transfer
+ * @urb: URB to be checked
+ *
+ * Returns 1 if @urb describes an OUT transfer (host-to-device),
+ * otherwise 0.
+ */
+static inline int usb_urb_dir_out(struct urb *urb)
+{
+ return (urb->transfer_flags & URB_DIR_MASK) == URB_DIR_OUT;
+}
+
+void *usb_alloc_coherent(struct usb_device *dev, size_t size,
+ gfp_t mem_flags, dma_addr_t *dma);
+void usb_free_coherent(struct usb_device *dev, size_t size,
+ void *addr, dma_addr_t dma);
+
+#if 0
+struct urb *usb_buffer_map(struct urb *urb);
+void usb_buffer_dmasync(struct urb *urb);
+void usb_buffer_unmap(struct urb *urb);
+#endif
+
+struct scatterlist;
+int usb_buffer_map_sg(const struct usb_device *dev, int is_in,
+ struct scatterlist *sg, int nents);
+#if 0
+void usb_buffer_dmasync_sg(const struct usb_device *dev, int is_in,
+ struct scatterlist *sg, int n_hw_ents);
+#endif
+void usb_buffer_unmap_sg(const struct usb_device *dev, int is_in,
+ struct scatterlist *sg, int n_hw_ents);
+
+/*-------------------------------------------------------------------*
+ * SYNCHRONOUS CALL SUPPORT *
+ *-------------------------------------------------------------------*/
+#ifndef __UBOOT__
+extern int usb_control_msg(struct usb_device *dev, unsigned int pipe,
+ __u8 request, __u8 requesttype, __u16 value, __u16 index,
+ void *data, __u16 size, int timeout);
+extern int usb_interrupt_msg(struct usb_device *usb_dev, unsigned int pipe,
+ void *data, int len, int *actual_length, int timeout);
+extern int usb_bulk_msg(struct usb_device *usb_dev, unsigned int pipe,
+ void *data, int len, int *actual_length,
+ int timeout);
+
+
+/* wrappers around usb_control_msg() for the most common standard requests */
+extern int usb_get_descriptor(struct usb_device *dev, unsigned char desctype,
+ unsigned char descindex, void *buf, int size);
+extern int usb_get_status(struct usb_device *dev,
+ int type, int target, void *data);
+extern int usb_string(struct usb_device *dev, int index,
+ char *buf, size_t size);
+
+/* wrappers that also update important state inside usbcore */
+extern int usb_clear_halt(struct usb_device *dev, int pipe);
+extern int usb_reset_configuration(struct usb_device *dev);
+extern int usb_set_interface(struct usb_device *dev, int ifnum, int alternate);
+extern void usb_reset_endpoint(struct usb_device *dev, unsigned int epaddr);
+
+/* this request isn't really synchronous, but it belongs with the others */
+extern int usb_driver_set_configuration(struct usb_device *udev, int config);
+#endif
+/*
+ * timeouts, in milliseconds, used for sending/receiving control messages
+ * they typically complete within a few frames (msec) after they're issued
+ * USB identifies 5 second timeouts, maybe more in a few cases, and a few
+ * slow devices (like some MGE Ellipse UPSes) actually push that limit.
+ */
+#define USB_CTRL_GET_TIMEOUT 5000
+#define USB_CTRL_SET_TIMEOUT 5000
+
+
+/**
+ * struct usb_sg_request - support for scatter/gather I/O
+ * @status: zero indicates success, else negative errno
+ * @bytes: counts bytes transferred.
+ *
+ * These requests are initialized using usb_sg_init(), and then are used
+ * as request handles passed to usb_sg_wait() or usb_sg_cancel(). Most
+ * members of the request object aren't for driver access.
+ *
+ * The status and bytecount values are valid only after usb_sg_wait()
+ * returns. If the status is zero, then the bytecount matches the total
+ * from the request.
+ *
+ * After an error completion, drivers may need to clear a halt condition
+ * on the endpoint.
+ */
+struct usb_sg_request {
+ int status;
+ size_t bytes;
+
+ /* private:
+ * members below are private to usbcore,
+ * and are not provided for driver access!
+ */
+ spinlock_t lock;
+
+ struct usb_device *dev;
+ int pipe;
+
+ int entries;
+ struct urb **urbs;
+
+ int count;
+#ifndef __UBOOT__
+ struct completion complete;
+#endif
+};
+
+int usb_sg_init(
+ struct usb_sg_request *io,
+ struct usb_device *dev,
+ unsigned pipe,
+ unsigned period,
+ struct scatterlist *sg,
+ int nents,
+ size_t length,
+ gfp_t mem_flags
+);
+void usb_sg_cancel(struct usb_sg_request *io);
+void usb_sg_wait(struct usb_sg_request *io);
+
+
+/* ----------------------------------------------------------------------- */
+
+/*
+ * For various legacy reasons, Linux has a small cookie that's paired with
+ * a struct usb_device to identify an endpoint queue. Queue characteristics
+ * are defined by the endpoint's descriptor. This cookie is called a "pipe",
+ * an unsigned int encoded as:
+ *
+ * - direction: bit 7 (0 = Host-to-Device [Out],
+ * 1 = Device-to-Host [In] ...
+ * like endpoint bEndpointAddress)
+ * - device address: bits 8-14 ... bit positions known to uhci-hcd
+ * - endpoint: bits 15-18 ... bit positions known to uhci-hcd
+ * - pipe type: bits 30-31 (00 = isochronous, 01 = interrupt,
+ * 10 = control, 11 = bulk)
+ *
+ * Given the device address and endpoint descriptor, pipes are redundant.
+ */
+
+/* NOTE: these are not the standard USB_ENDPOINT_XFER_* values!! */
+/* (yet ... they're the values used by usbfs) */
+#define PIPE_ISOCHRONOUS 0
+#define PIPE_INTERRUPT 1
+#define PIPE_CONTROL 2
+#define PIPE_BULK 3
+
+#define usb_pipein(pipe) ((pipe) & USB_DIR_IN)
+#define usb_pipeout(pipe) (!usb_pipein(pipe))
+
+#define usb_pipedevice(pipe) (((pipe) >> 8) & 0x7f)
+#define usb_pipeendpoint(pipe) (((pipe) >> 15) & 0xf)
+
+#define usb_pipetype(pipe) (((pipe) >> 30) & 3)
+#define usb_pipeisoc(pipe) (usb_pipetype((pipe)) == PIPE_ISOCHRONOUS)
+#define usb_pipeint(pipe) (usb_pipetype((pipe)) == PIPE_INTERRUPT)
+#define usb_pipecontrol(pipe) (usb_pipetype((pipe)) == PIPE_CONTROL)
+#define usb_pipebulk(pipe) (usb_pipetype((pipe)) == PIPE_BULK)
+
+static inline unsigned int __create_pipe(struct usb_device *dev,
+ unsigned int endpoint)
+{
+ return (dev->devnum << 8) | (endpoint << 15);
+}
+
+/* Create various pipes... */
+#define usb_sndctrlpipe(dev, endpoint) \
+ ((PIPE_CONTROL << 30) | __create_pipe(dev, endpoint))
+#define usb_rcvctrlpipe(dev, endpoint) \
+ ((PIPE_CONTROL << 30) | __create_pipe(dev, endpoint) | USB_DIR_IN)
+#define usb_sndisocpipe(dev, endpoint) \
+ ((PIPE_ISOCHRONOUS << 30) | __create_pipe(dev, endpoint))
+#define usb_rcvisocpipe(dev, endpoint) \
+ ((PIPE_ISOCHRONOUS << 30) | __create_pipe(dev, endpoint) | USB_DIR_IN)
+#define usb_sndbulkpipe(dev, endpoint) \
+ ((PIPE_BULK << 30) | __create_pipe(dev, endpoint))
+#define usb_rcvbulkpipe(dev, endpoint) \
+ ((PIPE_BULK << 30) | __create_pipe(dev, endpoint) | USB_DIR_IN)
+#define usb_sndintpipe(dev, endpoint) \
+ ((PIPE_INTERRUPT << 30) | __create_pipe(dev, endpoint))
+#define usb_rcvintpipe(dev, endpoint) \
+ ((PIPE_INTERRUPT << 30) | __create_pipe(dev, endpoint) | USB_DIR_IN)
+
+static inline struct usb_host_endpoint *
+usb_pipe_endpoint(struct usb_device *dev, unsigned int pipe)
+{
+ struct usb_host_endpoint **eps;
+ eps = usb_pipein(pipe) ? dev->ep_in : dev->ep_out;
+ return eps[usb_pipeendpoint(pipe)];
+}
+
+/*-------------------------------------------------------------------------*/
+#ifndef __UBOOT__
+static inline __u16
+usb_maxpacket(struct usb_device *udev, int pipe, int is_out)
+{
+ struct usb_host_endpoint *ep;
+ unsigned epnum = usb_pipeendpoint(pipe);
+
+ if (is_out) {
+#ifndef __UBOOT__
+ /* Fix this warning */
+ WARN_ON(usb_pipein(pipe));
+#endif
+ ep = udev->ep_out[epnum];
+ } else {
+#ifndef __UBOOT__
+ /* Fix this warning */
+ WARN_ON(usb_pipeout(pipe));
+#endif
+ ep = udev->ep_in[epnum];
+ }
+ if (!ep)
+ return 0;
+
+ /* NOTE: only 0x07ff bits are for packet size... */
+ return usb_endpoint_maxp(&ep->desc);
+}
+#endif
+/* ----------------------------------------------------------------------- */
+
+/* translate USB error codes to codes user space understands */
+static inline int usb_translate_errors(int error_code)
+{
+ switch (error_code) {
+ case 0:
+ case -ENOMEM:
+ case -ENODEV:
+ case -EOPNOTSUPP:
+ return error_code;
+ default:
+ return -EIO;
+ }
+}
+
+/* Events from the usb core */
+#define USB_DEVICE_ADD 0x0001
+#define USB_DEVICE_REMOVE 0x0002
+#define USB_BUS_ADD 0x0003
+#define USB_BUS_REMOVE 0x0004
+extern void usb_register_notify(struct notifier_block *nb);
+extern void usb_unregister_notify(struct notifier_block *nb);
+
+/* debugfs stuff */
+extern struct dentry *usb_debug_root;
+
+#ifdef __UBOOT__
+/* device request (setup) */
+struct devrequest {
+ unsigned char requesttype;
+ unsigned char request;
+ unsigned short value;
+ unsigned short index;
+ unsigned short length;
+} __attribute__ ((packed));
+
+#endif
+
+#endif
diff --git a/include/linux/usb/usb-mod-devicetable.h b/include/linux/usb/usb-mod-devicetable.h
new file mode 100644
index 0000000..c90691c
--- /dev/null
+++ b/include/linux/usb/usb-mod-devicetable.h
@@ -0,0 +1,131 @@
+/*
+ * Copyright (C) 2013
+ * Texas Instruments Incorporated.
+ *
+ * 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
+ *
+ * Note: This part of code has been derived from linux source mod_devicetable.h
+ *
+ */
+
+#ifndef LINUX_MOD_DEVICETABLE_H
+#define LINUX_MOD_DEVICETABLE_H
+
+#define __UBOOT__
+/**
+ * struct usb_device_id - identifies USB devices for probing and hotplugging
+ * @match_flags: Bit mask controlling of the other fields are used to match
+ * against new devices. Any field except for driver_info may be used,
+ * although some only make sense in conjunction with other fields.
+ * This is usually set by a USB_DEVICE_*() macro, which sets all
+ * other fields in this structure except for driver_info.
+ * @idVendor: USB vendor ID for a device; numbers are assigned
+ * by the USB forum to its members.
+ * @idProduct: Vendor-assigned product ID.
+ * @bcdDevice_lo: Low end of range of vendor-assigned product version numbers.
+ * This is also used to identify individual product versions, for
+ * a range consisting of a single device.
+ * @bcdDevice_hi: High end of version number range. The range of product
+ * versions is inclusive.
+ * @bDeviceClass: Class of device; numbers are assigned
+ * by the USB forum. Products may choose to implement classes,
+ * or be vendor-specific. Device classes specify behavior of all
+ * the interfaces on a devices.
+ * @bDeviceSubClass: Subclass of device; associated with bDeviceClass.
+ * @bDeviceProtocol: Protocol of device; associated with bDeviceClass.
+ * @bInterfaceClass: Class of interface; numbers are assigned
+ * by the USB forum. Products may choose to implement classes,
+ * or be vendor-specific. Interface classes specify behavior only
+ * of a given interface; other interfaces may support other classes.
+ * @bInterfaceSubClass: Subclass of interface; associated with bInterfaceClass.
+ * @bInterfaceProtocol: Protocol of interface; associated with bInterfaceClass.
+ * @bInterfaceNumber: Number of interface; composite devices may use
+ * fixed interface numbers to differentiate between vendor-specific
+ * interfaces.
+ * @driver_info: Holds information used by the driver. Usually it holds
+ * a pointer to a descriptor understood by the driver, or perhaps
+ * device flags.
+ *
+ * In most cases, drivers will create a table of device IDs by using
+ * USB_DEVICE(), or similar macros designed for that purpose.
+ * They will then export it to userspace using MODULE_DEVICE_TABLE(),
+ * and provide it to the USB core through their usb_driver structure.
+ *
+ * See the usb_match_id() function for information about how matches are
+ * performed. Briefly, you will normally use one of several macros to help
+ * construct these entries. Each entry you provide will either identify
+ * one or more specific products, or will identify a class of products
+ * which have agreed to behave the same. You should put the more specific
+ * matches towards the beginning of your table, so that driver_info can
+ * record quirks of specific products.
+ */
+struct usb_device_id {
+ /* which fields to match against? */
+ __u16 match_flags;
+
+ /* Used for product specific matches; range is inclusive */
+ __u16 idVendor;
+ __u16 idProduct;
+ __u16 bcdDevice_lo;
+ __u16 bcdDevice_hi;
+
+ /* Used for device class matches */
+ __u8 bDeviceClass;
+ __u8 bDeviceSubClass;
+ __u8 bDeviceProtocol;
+
+ /* Used for interface class matches */
+ __u8 bInterfaceClass;
+ __u8 bInterfaceSubClass;
+ __u8 bInterfaceProtocol;
+
+ /* Used for vendor-specific interface matches */
+ __u8 bInterfaceNumber;
+#ifndef __UBOOT__
+ /* not matched against */
+ kernel_ulong_t driver_info
+ __attribute__((aligned(sizeof(kernel_ulong_t))));
+#endif
+};
+
+/* Some useful macros to use to create struct usb_device_id */
+#define USB_DEVICE_ID_MATCH_VENDOR 0x0001
+#define USB_DEVICE_ID_MATCH_PRODUCT 0x0002
+#define USB_DEVICE_ID_MATCH_DEV_LO 0x0004
+#define USB_DEVICE_ID_MATCH_DEV_HI 0x0008
+#define USB_DEVICE_ID_MATCH_DEV_CLASS 0x0010
+#define USB_DEVICE_ID_MATCH_DEV_SUBCLASS 0x0020
+#define USB_DEVICE_ID_MATCH_DEV_PROTOCOL 0x0040
+#define USB_DEVICE_ID_MATCH_INT_CLASS 0x0080
+#define USB_DEVICE_ID_MATCH_INT_SUBCLASS 0x0100
+#define USB_DEVICE_ID_MATCH_INT_PROTOCOL 0x0200
+#define USB_DEVICE_ID_MATCH_INT_NUMBER 0x0400
+
+#define HID_ANY_ID (~0)
+#define HID_BUS_ANY 0xffff
+#define HID_GROUP_ANY 0x0000
+
+struct hid_device_id {
+ __u16 bus;
+ __u16 group;
+ __u32 vendor;
+ __u32 product;
+#ifndef __UBOOT__
+ kernel_ulong_t driver_data;
+#endif
+};
+
+#endif /* LINUX_MOD_DEVICETABLE_H */
diff --git a/include/usb.h b/include/usb.h
index d7b082d..0598972 100644
--- a/include/usb.h
+++ b/include/usb.h
@@ -28,6 +28,7 @@
#include <usb_defs.h>
#include <linux/usb/ch9.h>
+#include <linux/usb/usb-compat.h>
/*
* The EHCI spec says that we must align to at least 32 bytes. However,
@@ -45,9 +46,7 @@
#define USB_MAX_DEVICE 32
#define USB_MAXCONFIG 8
-#define USB_MAXINTERFACES 8
#define USB_MAXENDPOINTS 16
-#define USB_MAXCHILDREN 8 /* This is arbitrary */
#define USB_MAX_HUB 16
#define USB_CNTL_TIMEOUT 100 /* 100ms timeout */
@@ -58,92 +57,6 @@
*/
#define USB_TIMEOUT_MS(pipe) (usb_pipebulk(pipe) ? 5000 : 1000)
-/* device request (setup) */
-struct devrequest {
- unsigned char requesttype;
- unsigned char request;
- unsigned short value;
- unsigned short index;
- unsigned short length;
-} __attribute__ ((packed));
-
-/* Interface */
-struct usb_interface {
- struct usb_interface_descriptor desc;
-
- unsigned char no_of_ep;
- unsigned char num_altsetting;
- unsigned char act_altsetting;
-
- struct usb_endpoint_descriptor ep_desc[USB_MAXENDPOINTS];
- /*
- * Super Speed Device will have Super Speed Endpoint
- * Companion Descriptor (section 9.6.7 of usb 3.0 spec)
- * Revision 1.0 June 6th 2011
- */
- struct usb_ss_ep_comp_descriptor ss_ep_comp_desc[USB_MAXENDPOINTS];
-} __attribute__ ((packed));
-
-/* Configuration information.. */
-struct usb_config {
- struct usb_config_descriptor desc;
-
- unsigned char no_of_if; /* number of interfaces */
- struct usb_interface if_desc[USB_MAXINTERFACES];
-} __attribute__ ((packed));
-
-enum {
- /* Maximum packet size; encoded as 0,1,2,3 = 8,16,32,64 */
- PACKET_SIZE_8 = 0,
- PACKET_SIZE_16 = 1,
- PACKET_SIZE_32 = 2,
- PACKET_SIZE_64 = 3,
-};
-
-struct usb_device {
- int devnum; /* Device number on USB bus */
- int speed; /* full/low/high */
- char mf[32]; /* manufacturer */
- char prod[32]; /* product */
- char serial[32]; /* serial number */
-
- /* Maximum packet size; one of: PACKET_SIZE_* */
- int maxpacketsize;
- /* one bit for each endpoint ([0] = IN, [1] = OUT) */
- unsigned int toggle[2];
- /* endpoint halts; one bit per endpoint # & direction;
- * [0] = IN, [1] = OUT
- */
- unsigned int halted[2];
- int epmaxpacketin[16]; /* INput endpoint specific maximums */
- int epmaxpacketout[16]; /* OUTput endpoint specific maximums */
-
- int configno; /* selected config number */
- /* Device Descriptor */
- struct usb_device_descriptor descriptor
- __attribute__((aligned(ARCH_DMA_MINALIGN)));
- struct usb_config config; /* config descriptor */
-
- int have_langid; /* whether string_langid is valid yet */
- int string_langid; /* language ID for strings */
- int (*irq_handle)(struct usb_device *dev);
- unsigned long irq_status;
- int irq_act_len; /* transfered bytes */
- void *privptr;
- /*
- * Child devices - if this is a hub device
- * Each instance needs its own set of data structures.
- */
- unsigned long status;
- int act_len; /* transfered bytes */
- int maxchild; /* Number of ports if hub */
- int portnr;
- struct usb_device *parent;
- struct usb_device *children[USB_MAXCHILDREN];
-
- void *controller; /* hardware controller private data */
-};
-
/**********************************************************************
* this is how the lowlevel part communicate with the outer world
*/
@@ -155,7 +68,7 @@ struct usb_device {
defined(CONFIG_USB_OMAP3) || defined(CONFIG_USB_DA8XX) || \
defined(CONFIG_USB_BLACKFIN) || defined(CONFIG_USB_AM35X) || \
defined(CONFIG_USB_MUSB_DSPS) || defined(CONFIG_USB_MUSB_AM35X) || \
- defined(CONFIG_USB_MUSB_OMAP2PLUS)
+ defined(CONFIG_USB_MUSB_OMAP2PLUS) || defined(CONFIG_USB_DWC3)
int usb_lowlevel_init(int index, void **controller);
int usb_lowlevel_stop(int index);
@@ -226,7 +139,6 @@ int usb_bulk_msg(struct usb_device *dev, unsigned int pipe,
int usb_submit_int_msg(struct usb_device *dev, unsigned long pipe,
void *buffer, int transfer_len, int interval);
int usb_disable_asynch(int disable);
-int usb_maxpacket(struct usb_device *dev, unsigned long pipe);
int usb_get_configuration_no(struct usb_device *dev, unsigned char *buffer,
int cfgno);
int usb_get_report(struct usb_device *dev, int ifnum, unsigned char type,
@@ -295,32 +207,7 @@ int usb_set_interface(struct usb_device *dev, int interface, int alternate);
* specification, so that much of the uhci driver can just mask the bits
* appropriately.
*/
-/* Create various pipes... */
-#define create_pipe(dev,endpoint) \
- (((dev)->devnum << 8) | ((endpoint) << 15) | \
- (dev)->maxpacketsize)
#define default_pipe(dev) ((dev)->speed << 26)
-
-#define usb_sndctrlpipe(dev, endpoint) ((PIPE_CONTROL << 30) | \
- create_pipe(dev, endpoint))
-#define usb_rcvctrlpipe(dev, endpoint) ((PIPE_CONTROL << 30) | \
- create_pipe(dev, endpoint) | \
- USB_DIR_IN)
-#define usb_sndisocpipe(dev, endpoint) ((PIPE_ISOCHRONOUS << 30) | \
- create_pipe(dev, endpoint))
-#define usb_rcvisocpipe(dev, endpoint) ((PIPE_ISOCHRONOUS << 30) | \
- create_pipe(dev, endpoint) | \
- USB_DIR_IN)
-#define usb_sndbulkpipe(dev, endpoint) ((PIPE_BULK << 30) | \
- create_pipe(dev, endpoint))
-#define usb_rcvbulkpipe(dev, endpoint) ((PIPE_BULK << 30) | \
- create_pipe(dev, endpoint) | \
- USB_DIR_IN)
-#define usb_sndintpipe(dev, endpoint) ((PIPE_INTERRUPT << 30) | \
- create_pipe(dev, endpoint))
-#define usb_rcvintpipe(dev, endpoint) ((PIPE_INTERRUPT << 30) | \
- create_pipe(dev, endpoint) | \
- USB_DIR_IN)
#define usb_snddefctrl(dev) ((PIPE_CONTROL << 30) | \
default_pipe(dev))
#define usb_rcvdefctrl(dev) ((PIPE_CONTROL << 30) | \
@@ -343,8 +230,6 @@ int usb_set_interface(struct usb_device *dev, int interface, int alternate);
#define usb_packetid(pipe) (((pipe) & USB_DIR_IN) ? USB_PID_IN : \
USB_PID_OUT)
-#define usb_pipeout(pipe) ((((pipe) >> 7) & 1) ^ 1)
-#define usb_pipein(pipe) (((pipe) >> 7) & 1)
#define usb_pipedevice(pipe) (((pipe) >> 8) & 0x7f)
#define usb_pipe_endpdev(pipe) (((pipe) >> 8) & 0x7ff)
#define usb_pipeendpoint(pipe) (((pipe) >> 15) & 0xf)
diff --git a/include/usb/lin_gadget_compat.h b/include/usb/lin_gadget_compat.h
index 5bdcb8d..93305e0 100644
--- a/include/usb/lin_gadget_compat.h
+++ b/include/usb/lin_gadget_compat.h
@@ -24,34 +24,7 @@
#define __LIN_COMPAT_H__
#include <linux/compat.h>
-
-/* common */
-#define spin_lock_init(...)
-#define spin_lock(...)
-#define spin_lock_irqsave(lock, flags) do { debug("%lu\n", flags); } while (0)
-#define spin_unlock(...)
-#define spin_unlock_irqrestore(lock, flags) do {flags = 0; } while (0)
-#define disable_irq(...)
-#define enable_irq(...)
-
-#define mutex_init(...)
-#define mutex_lock(...)
-#define mutex_unlock(...)
-
-#define GFP_KERNEL 0
-
-#define IRQ_HANDLED 1
-
-#define ENOTSUPP 524 /* Operation is not supported */
-
-#define BITS_PER_BYTE 8
-#define BITS_TO_LONGS(nr) \
- DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(long))
-#define DECLARE_BITMAP(name, bits) \
- unsigned long name[BITS_TO_LONGS(bits)]
-
-#define small_const_nbits(nbits) \
- (__builtin_constant_p(nbits) && (nbits) <= BITS_PER_LONG)
+#include <linux/usb/linux-compat.h>
static inline void bitmap_zero(unsigned long *dst, int nbits)
{
--
1.7.5.4
next prev parent reply other threads:[~2013-06-21 18:27 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-21 18:27 [U-Boot] [RFC] [UBOOT] [PATCH 0/4] DWC back port from Linux kernel Dan Murphy
2013-06-21 18:27 ` Dan Murphy [this message]
2013-06-21 18:27 ` [U-Boot] [RFC] [UBOOT] [PATCH 2/4] USB: dwc3: Initial back port of dwc3 code Dan Murphy
2013-06-24 11:24 ` Lukasz Majewski
2013-06-24 12:05 ` Dan Murphy
2013-06-21 18:27 ` [U-Boot] [RFC] [UBOOT] [PATCH 3/4] omap5: usb: Add usb otg clocks and enable Dan Murphy
2013-06-21 18:27 ` [U-Boot] [RFC] [UBOOT] [PATCH 4/4] Makefile: Add the libdwc3 to the main Makefile Dan Murphy
2013-06-21 19:28 ` [U-Boot] [RFC] [UBOOT] [PATCH 0/4] DWC back port from Linux kernel Tom Rini
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