#include <linux/freezer.h>
#include <linux/utsname.h>
-#include <asm/unaligned.h>
-
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
#define DRIVER_NAME "g_file_storage"
#define DRIVER_VERSION "20 November 2008"
-static const char longname[] = DRIVER_DESC;
-static const char shortname[] = DRIVER_NAME;
+static char fsg_string_manufacturer[64];
+static const char fsg_string_product[] = DRIVER_DESC;
+static char fsg_string_serial[13];
+static const char fsg_string_config[] = "Self-powered";
+static const char fsg_string_interface[] = "Mass Storage";
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_AUTHOR("Alan Stern");
*
* DO NOT REUSE THESE IDs with any other driver!! Ever!!
* Instead: allocate your own, using normal USB-IF procedures. */
-#define DRIVER_VENDOR_ID 0x0525 // NetChip
-#define DRIVER_PRODUCT_ID 0xa4a5 // Linux-USB File-backed Storage Gadget
+#define FSG_VENDOR_ID 0x0525 // NetChip
+#define FSG_PRODUCT_ID 0xa4a5 // Linux-USB File-backed Storage Gadget
/*
/* Encapsulate the module parameter settings */
-#define MAX_LUNS 8
+#define FSG_MAX_LUNS 8
static struct {
- char *file[MAX_LUNS];
- int ro[MAX_LUNS];
+ char *file[FSG_MAX_LUNS];
+ int ro[FSG_MAX_LUNS];
unsigned int num_filenames;
unsigned int num_ros;
unsigned int nluns;
.removable = 0,
.can_stall = 1,
.cdrom = 0,
- .vendor = DRIVER_VENDOR_ID,
- .product = DRIVER_PRODUCT_ID,
+ .vendor = FSG_VENDOR_ID,
+ .product = FSG_PRODUCT_ID,
.release = 0xffff, // Use controller chip type
.buflen = 16384,
};
int intreq_busy;
struct fsg_buffhd *intr_buffhd;
- unsigned int bulk_out_maxpacket;
+ unsigned int bulk_out_maxpacket;
enum fsg_state state; // For exception handling
unsigned int exception_req_tag;
struct fsg_buffhd *next_buffhd_to_fill;
struct fsg_buffhd *next_buffhd_to_drain;
- struct fsg_buffhd buffhds[NUM_BUFFERS];
+ struct fsg_buffhd buffhds[FSG_NUM_BUFFERS];
int thread_wakeup_needed;
struct completion thread_notifier;
u8 cbbuf_cmnd[MAX_COMMAND_SIZE];
unsigned int nluns;
- struct lun *luns;
- struct lun *curlun;
+ struct fsg_lun *luns;
+ struct fsg_lun *curlun;
};
typedef void (*fsg_routine_t)(struct fsg_dev *);
.bDeviceClass = USB_CLASS_PER_INTERFACE,
/* The next three values can be overridden by module parameters */
- .idVendor = cpu_to_le16(DRIVER_VENDOR_ID),
- .idProduct = cpu_to_le16(DRIVER_PRODUCT_ID),
+ .idVendor = cpu_to_le16(FSG_VENDOR_ID),
+ .idProduct = cpu_to_le16(FSG_PRODUCT_ID),
.bcdDevice = cpu_to_le16(0xffff),
- .iManufacturer = STRING_MANUFACTURER,
- .iProduct = STRING_PRODUCT,
- .iSerialNumber = STRING_SERIAL,
+ .iManufacturer = FSG_STRING_MANUFACTURER,
+ .iProduct = FSG_STRING_PRODUCT,
+ .iSerialNumber = FSG_STRING_SERIAL,
.bNumConfigurations = 1,
};
/* wTotalLength computed by usb_gadget_config_buf() */
.bNumInterfaces = 1,
.bConfigurationValue = CONFIG_VALUE,
- .iConfiguration = STRING_CONFIG,
+ .iConfiguration = FSG_STRING_CONFIG,
.bmAttributes = USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER,
.bMaxPower = CONFIG_USB_GADGET_VBUS_DRAW / 2,
};
if (gadget_is_dualspeed(gadget) && type == USB_DT_OTHER_SPEED_CONFIG)
speed = (USB_SPEED_FULL + USB_SPEED_HIGH) - speed;
if (gadget_is_dualspeed(gadget) && speed == USB_SPEED_HIGH)
- function = hs_function;
+ function = fsg_hs_function;
else
- function = fs_function;
+ function = fsg_fs_function;
/* for now, don't advertise srp-only devices */
if (!gadget_is_otg(gadget))
VDBG(fsg, "get string descriptor\n");
/* wIndex == language code */
- value = usb_gadget_get_string(&stringtab,
+ value = usb_gadget_get_string(&fsg_stringtab,
w_value & 0xff, req->buf);
break;
}
static int do_read(struct fsg_dev *fsg)
{
- struct lun *curlun = fsg->curlun;
+ struct fsg_lun *curlun = fsg->curlun;
u32 lba;
struct fsg_buffhd *bh;
int rc;
static int do_write(struct fsg_dev *fsg)
{
- struct lun *curlun = fsg->curlun;
+ struct fsg_lun *curlun = fsg->curlun;
u32 lba;
struct fsg_buffhd *bh;
int get_some_more;
static int do_synchronize_cache(struct fsg_dev *fsg)
{
- struct lun *curlun = fsg->curlun;
+ struct fsg_lun *curlun = fsg->curlun;
int rc;
/* We ignore the requested LBA and write out all file's
* dirty data buffers. */
- rc = fsync_sub(curlun);
+ rc = fsg_lun_fsync_sub(curlun);
if (rc)
curlun->sense_data = SS_WRITE_ERROR;
return 0;
/*-------------------------------------------------------------------------*/
-static void invalidate_sub(struct lun *curlun)
+static void invalidate_sub(struct fsg_lun *curlun)
{
struct file *filp = curlun->filp;
struct inode *inode = filp->f_path.dentry->d_inode;
static int do_verify(struct fsg_dev *fsg)
{
- struct lun *curlun = fsg->curlun;
+ struct fsg_lun *curlun = fsg->curlun;
u32 lba;
u32 verification_length;
struct fsg_buffhd *bh = fsg->next_buffhd_to_fill;
file_offset = ((loff_t) lba) << 9;
/* Write out all the dirty buffers before invalidating them */
- fsync_sub(curlun);
+ fsg_lun_fsync_sub(curlun);
if (signal_pending(current))
return -EINTR;
static int do_request_sense(struct fsg_dev *fsg, struct fsg_buffhd *bh)
{
- struct lun *curlun = fsg->curlun;
+ struct fsg_lun *curlun = fsg->curlun;
u8 *buf = (u8 *) bh->buf;
u32 sd, sdinfo;
int valid;
static int do_read_capacity(struct fsg_dev *fsg, struct fsg_buffhd *bh)
{
- struct lun *curlun = fsg->curlun;
+ struct fsg_lun *curlun = fsg->curlun;
u32 lba = get_unaligned_be32(&fsg->cmnd[2]);
int pmi = fsg->cmnd[8];
u8 *buf = (u8 *) bh->buf;
static int do_read_header(struct fsg_dev *fsg, struct fsg_buffhd *bh)
{
- struct lun *curlun = fsg->curlun;
+ struct fsg_lun *curlun = fsg->curlun;
int msf = fsg->cmnd[1] & 0x02;
u32 lba = get_unaligned_be32(&fsg->cmnd[2]);
u8 *buf = (u8 *) bh->buf;
static int do_read_toc(struct fsg_dev *fsg, struct fsg_buffhd *bh)
{
- struct lun *curlun = fsg->curlun;
+ struct fsg_lun *curlun = fsg->curlun;
int msf = fsg->cmnd[1] & 0x02;
int start_track = fsg->cmnd[6];
u8 *buf = (u8 *) bh->buf;
static int do_mode_sense(struct fsg_dev *fsg, struct fsg_buffhd *bh)
{
- struct lun *curlun = fsg->curlun;
+ struct fsg_lun *curlun = fsg->curlun;
int mscmnd = fsg->cmnd[0];
u8 *buf = (u8 *) bh->buf;
u8 *buf0 = buf;
static int do_start_stop(struct fsg_dev *fsg)
{
- struct lun *curlun = fsg->curlun;
+ struct fsg_lun *curlun = fsg->curlun;
int loej, start;
if (!mod_data.removable) {
if (loej) { // Simulate an unload/eject
up_read(&fsg->filesem);
down_write(&fsg->filesem);
- close_backing_file(curlun);
+ fsg_lun_close(curlun);
up_write(&fsg->filesem);
down_read(&fsg->filesem);
}
/* Our emulation doesn't support mounting; the medium is
* available for use as soon as it is loaded. */
- if (!backing_file_is_open(curlun)) {
+ if (!fsg_lun_is_open(curlun)) {
curlun->sense_data = SS_MEDIUM_NOT_PRESENT;
return -EINVAL;
}
static int do_prevent_allow(struct fsg_dev *fsg)
{
- struct lun *curlun = fsg->curlun;
+ struct fsg_lun *curlun = fsg->curlun;
int prevent;
if (!mod_data.removable) {
}
if (curlun->prevent_medium_removal && !prevent)
- fsync_sub(curlun);
+ fsg_lun_fsync_sub(curlun);
curlun->prevent_medium_removal = prevent;
return 0;
}
static int do_read_format_capacities(struct fsg_dev *fsg,
struct fsg_buffhd *bh)
{
- struct lun *curlun = fsg->curlun;
+ struct fsg_lun *curlun = fsg->curlun;
u8 *buf = (u8 *) bh->buf;
buf[0] = buf[1] = buf[2] = 0;
static int do_mode_select(struct fsg_dev *fsg, struct fsg_buffhd *bh)
{
- struct lun *curlun = fsg->curlun;
+ struct fsg_lun *curlun = fsg->curlun;
/* We don't support MODE SELECT */
curlun->sense_data = SS_INVALID_COMMAND;
static int send_status(struct fsg_dev *fsg)
{
- struct lun *curlun = fsg->curlun;
+ struct fsg_lun *curlun = fsg->curlun;
struct fsg_buffhd *bh;
int rc;
u8 status = USB_STATUS_PASS;
int lun = fsg->cmnd[1] >> 5;
static const char dirletter[4] = {'u', 'o', 'i', 'n'};
char hdlen[20];
- struct lun *curlun;
+ struct fsg_lun *curlun;
/* Adjust the expected cmnd_size for protocol encapsulation padding.
* Transparent SCSI doesn't pad. */
/* If the medium isn't mounted and the command needs to access
* it, return an error. */
- if (curlun && !backing_file_is_open(curlun) && needs_medium) {
+ if (curlun && !fsg_lun_is_open(curlun) && needs_medium) {
curlun->sense_data = SS_MEDIUM_NOT_PRESENT;
return -EINVAL;
}
static int received_cbw(struct fsg_dev *fsg, struct fsg_buffhd *bh)
{
- struct usb_request *req = bh->outreq;
- struct bulk_cb_wrap *cbw = req->buf;
+ struct usb_request *req = bh->outreq;
+ struct fsg_bulk_cb_wrap *cbw = req->buf;
/* Was this a real packet? Should it be ignored? */
if (req->status || test_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags))
}
/* Is the CBW meaningful? */
- if (cbw->Lun >= MAX_LUNS || cbw->Flags & ~USB_BULK_IN_FLAG ||
+ if (cbw->Lun >= FSG_MAX_LUNS || cbw->Flags & ~USB_BULK_IN_FLAG ||
cbw->Length <= 0 || cbw->Length > MAX_COMMAND_SIZE) {
DBG(fsg, "non-meaningful CBW: lun = %u, flags = 0x%x, "
"cmdlen %u\n",
reset:
/* Deallocate the requests */
- for (i = 0; i < NUM_BUFFERS; ++i) {
+ for (i = 0; i < FSG_NUM_BUFFERS; ++i) {
struct fsg_buffhd *bh = &fsg->buffhds[i];
if (bh->inreq) {
DBG(fsg, "set interface %d\n", altsetting);
/* Enable the endpoints */
- d = ep_desc(fsg->gadget, &fs_bulk_in_desc, &hs_bulk_in_desc);
+ d = fsg_ep_desc(fsg->gadget,
+ &fsg_fs_bulk_in_desc, &fsg_hs_bulk_in_desc);
if ((rc = enable_endpoint(fsg, fsg->bulk_in, d)) != 0)
goto reset;
fsg->bulk_in_enabled = 1;
- d = ep_desc(fsg->gadget, &fs_bulk_out_desc, &hs_bulk_out_desc);
+ d = fsg_ep_desc(fsg->gadget,
+ &fsg_fs_bulk_out_desc, &fsg_hs_bulk_out_desc);
if ((rc = enable_endpoint(fsg, fsg->bulk_out, d)) != 0)
goto reset;
fsg->bulk_out_enabled = 1;
clear_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags);
if (transport_is_cbi()) {
- d = ep_desc(fsg->gadget, &fs_intr_in_desc, &hs_intr_in_desc);
+ d = fsg_ep_desc(fsg->gadget,
+ &fsg_fs_intr_in_desc, &fsg_hs_intr_in_desc);
if ((rc = enable_endpoint(fsg, fsg->intr_in, d)) != 0)
goto reset;
fsg->intr_in_enabled = 1;
}
/* Allocate the requests */
- for (i = 0; i < NUM_BUFFERS; ++i) {
+ for (i = 0; i < FSG_NUM_BUFFERS; ++i) {
struct fsg_buffhd *bh = &fsg->buffhds[i];
if ((rc = alloc_request(fsg, fsg->bulk_in, &bh->inreq)) != 0)
struct fsg_buffhd *bh;
enum fsg_state old_state;
u8 new_config;
- struct lun *curlun;
+ struct fsg_lun *curlun;
unsigned int exception_req_tag;
int rc;
/* Cancel all the pending transfers */
if (fsg->intreq_busy)
usb_ep_dequeue(fsg->intr_in, fsg->intreq);
- for (i = 0; i < NUM_BUFFERS; ++i) {
+ for (i = 0; i < FSG_NUM_BUFFERS; ++i) {
bh = &fsg->buffhds[i];
if (bh->inreq_busy)
usb_ep_dequeue(fsg->bulk_in, bh->inreq);
/* Wait until everything is idle */
for (;;) {
num_active = fsg->intreq_busy;
- for (i = 0; i < NUM_BUFFERS; ++i) {
+ for (i = 0; i < FSG_NUM_BUFFERS; ++i) {
bh = &fsg->buffhds[i];
num_active += bh->inreq_busy + bh->outreq_busy;
}
* state, and the exception. Then invoke the handler. */
spin_lock_irq(&fsg->lock);
- for (i = 0; i < NUM_BUFFERS; ++i) {
+ for (i = 0; i < FSG_NUM_BUFFERS; ++i) {
bh = &fsg->buffhds[i];
bh->state = BUF_STATE_EMPTY;
}
case FSG_STATE_DISCONNECT:
for (i = 0; i < fsg->nluns; ++i)
- fsync_sub(fsg->luns + i);
+ fsg_lun_fsync_sub(fsg->luns + i);
do_set_config(fsg, 0); // Unconfigured state
break;
static ssize_t show_ro(struct device *dev, struct device_attribute *attr, char *buf)
{
- struct lun *curlun = dev_to_lun(dev);
+ struct fsg_lun *curlun = fsg_lun_from_dev(dev);
return sprintf(buf, "%d\n", curlun->ro);
}
static ssize_t show_file(struct device *dev, struct device_attribute *attr,
char *buf)
{
- struct lun *curlun = dev_to_lun(dev);
+ struct fsg_lun *curlun = fsg_lun_from_dev(dev);
struct fsg_dev *fsg = dev_get_drvdata(dev);
char *p;
ssize_t rc;
down_read(&fsg->filesem);
- if (backing_file_is_open(curlun)) { // Get the complete pathname
+ if (fsg_lun_is_open(curlun)) { // Get the complete pathname
p = d_path(&curlun->filp->f_path, buf, PAGE_SIZE - 1);
if (IS_ERR(p))
rc = PTR_ERR(p);
const char *buf, size_t count)
{
ssize_t rc = count;
- struct lun *curlun = dev_to_lun(dev);
+ struct fsg_lun *curlun = fsg_lun_from_dev(dev);
struct fsg_dev *fsg = dev_get_drvdata(dev);
int i;
/* Allow the write-enable status to change only while the backing file
* is closed. */
down_read(&fsg->filesem);
- if (backing_file_is_open(curlun)) {
+ if (fsg_lun_is_open(curlun)) {
LDBG(curlun, "read-only status change prevented\n");
rc = -EBUSY;
} else {
static ssize_t store_file(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct lun *curlun = dev_to_lun(dev);
+ struct fsg_lun *curlun = fsg_lun_from_dev(dev);
struct fsg_dev *fsg = dev_get_drvdata(dev);
int rc = 0;
- if (curlun->prevent_medium_removal && backing_file_is_open(curlun)) {
+ if (curlun->prevent_medium_removal && fsg_lun_is_open(curlun)) {
LDBG(curlun, "eject attempt prevented\n");
return -EBUSY; // "Door is locked"
}
/* Eject current medium */
down_write(&fsg->filesem);
- if (backing_file_is_open(curlun)) {
- close_backing_file(curlun);
+ if (fsg_lun_is_open(curlun)) {
+ fsg_lun_close(curlun);
curlun->unit_attention_data = SS_MEDIUM_NOT_PRESENT;
}
/* Load new medium */
if (count > 0 && buf[0]) {
- rc = open_backing_file(curlun, buf);
+ rc = fsg_lun_open(curlun, buf);
if (rc == 0)
curlun->unit_attention_data =
SS_NOT_READY_TO_READY_TRANSITION;
{
struct fsg_dev *fsg = get_gadget_data(gadget);
int i;
- struct lun *curlun;
+ struct fsg_lun *curlun;
struct usb_request *req = fsg->ep0req;
DBG(fsg, "unbind\n");
if (curlun->registered) {
device_remove_file(&curlun->dev, &dev_attr_ro);
device_remove_file(&curlun->dev, &dev_attr_file);
- close_backing_file(curlun);
+ fsg_lun_close(curlun);
device_unregister(&curlun->dev);
curlun->registered = 0;
}
}
/* Free the data buffers */
- for (i = 0; i < NUM_BUFFERS; ++i)
+ for (i = 0; i < FSG_NUM_BUFFERS; ++i)
kfree(fsg->buffhds[i].buf);
/* Free the request and buffer for endpoint 0 */
struct fsg_dev *fsg = the_fsg;
int rc;
int i;
- struct lun *curlun;
+ struct fsg_lun *curlun;
struct usb_ep *ep;
struct usb_request *req;
char *pathbuf, *p;
i = mod_data.nluns;
if (i == 0)
i = max(mod_data.num_filenames, 1u);
- if (i > MAX_LUNS) {
+ if (i > FSG_MAX_LUNS) {
ERROR(fsg, "invalid number of LUNs: %d\n", i);
rc = -EINVAL;
goto out;
/* Create the LUNs, open their backing files, and register the
* LUN devices in sysfs. */
- fsg->luns = kzalloc(i * sizeof(struct lun), GFP_KERNEL);
+ fsg->luns = kzalloc(i * sizeof(struct fsg_lun), GFP_KERNEL);
if (!fsg->luns) {
rc = -ENOMEM;
goto out;
kref_get(&fsg->ref);
if (mod_data.file[i] && *mod_data.file[i]) {
- if ((rc = open_backing_file(curlun,
+ if ((rc = fsg_lun_open(curlun,
mod_data.file[i])) != 0)
goto out;
} else if (!mod_data.removable) {
/* Find all the endpoints we will use */
usb_ep_autoconfig_reset(gadget);
- ep = usb_ep_autoconfig(gadget, &fs_bulk_in_desc);
+ ep = usb_ep_autoconfig(gadget, &fsg_fs_bulk_in_desc);
if (!ep)
goto autoconf_fail;
ep->driver_data = fsg; // claim the endpoint
fsg->bulk_in = ep;
- ep = usb_ep_autoconfig(gadget, &fs_bulk_out_desc);
+ ep = usb_ep_autoconfig(gadget, &fsg_fs_bulk_out_desc);
if (!ep)
goto autoconf_fail;
ep->driver_data = fsg; // claim the endpoint
fsg->bulk_out = ep;
if (transport_is_cbi()) {
- ep = usb_ep_autoconfig(gadget, &fs_intr_in_desc);
+ ep = usb_ep_autoconfig(gadget, &fsg_fs_intr_in_desc);
if (!ep)
goto autoconf_fail;
ep->driver_data = fsg; // claim the endpoint
device_desc.bcdDevice = cpu_to_le16(mod_data.release);
i = (transport_is_cbi() ? 3 : 2); // Number of endpoints
- intf_desc.bNumEndpoints = i;
- intf_desc.bInterfaceSubClass = mod_data.protocol_type;
- intf_desc.bInterfaceProtocol = mod_data.transport_type;
- fs_function[i + FS_FUNCTION_PRE_EP_ENTRIES] = NULL;
+ fsg_intf_desc.bNumEndpoints = i;
+ fsg_intf_desc.bInterfaceSubClass = mod_data.protocol_type;
+ fsg_intf_desc.bInterfaceProtocol = mod_data.transport_type;
+ fsg_fs_function[i + FSG_FS_FUNCTION_PRE_EP_ENTRIES] = NULL;
if (gadget_is_dualspeed(gadget)) {
- hs_function[i + HS_FUNCTION_PRE_EP_ENTRIES] = NULL;
+ fsg_hs_function[i + FSG_HS_FUNCTION_PRE_EP_ENTRIES] = NULL;
/* Assume ep0 uses the same maxpacket value for both speeds */
dev_qualifier.bMaxPacketSize0 = fsg->ep0->maxpacket;
/* Assume endpoint addresses are the same for both speeds */
- hs_bulk_in_desc.bEndpointAddress =
- fs_bulk_in_desc.bEndpointAddress;
- hs_bulk_out_desc.bEndpointAddress =
- fs_bulk_out_desc.bEndpointAddress;
- hs_intr_in_desc.bEndpointAddress =
- fs_intr_in_desc.bEndpointAddress;
+ fsg_hs_bulk_in_desc.bEndpointAddress =
+ fsg_fs_bulk_in_desc.bEndpointAddress;
+ fsg_hs_bulk_out_desc.bEndpointAddress =
+ fsg_fs_bulk_out_desc.bEndpointAddress;
+ fsg_hs_intr_in_desc.bEndpointAddress =
+ fsg_fs_intr_in_desc.bEndpointAddress;
}
if (gadget_is_otg(gadget))
- otg_desc.bmAttributes |= USB_OTG_HNP;
+ fsg_otg_desc.bmAttributes |= USB_OTG_HNP;
rc = -ENOMEM;
req->complete = ep0_complete;
/* Allocate the data buffers */
- for (i = 0; i < NUM_BUFFERS; ++i) {
+ for (i = 0; i < FSG_NUM_BUFFERS; ++i) {
struct fsg_buffhd *bh = &fsg->buffhds[i];
/* Allocate for the bulk-in endpoint. We assume that
goto out;
bh->next = bh + 1;
}
- fsg->buffhds[NUM_BUFFERS - 1].next = &fsg->buffhds[0];
+ fsg->buffhds[FSG_NUM_BUFFERS - 1].next = &fsg->buffhds[0];
/* This should reflect the actual gadget power source */
usb_gadget_set_selfpowered(gadget);
- snprintf(manufacturer, sizeof manufacturer, "%s %s with %s",
+ snprintf(fsg_string_manufacturer, sizeof fsg_string_manufacturer,
+ "%s %s with %s",
init_utsname()->sysname, init_utsname()->release,
gadget->name);
/* On a real device, serial[] would be loaded from permanent
* storage. We just encode it from the driver version string. */
- for (i = 0; i < sizeof(serial) - 2; i += 2) {
+ for (i = 0; i < sizeof fsg_string_serial - 2; i += 2) {
unsigned char c = DRIVER_VERSION[i / 2];
if (!c)
break;
- sprintf(&serial[i], "%02X", c);
+ sprintf(&fsg_string_serial[i], "%02X", c);
}
fsg->thread_task = kthread_create(fsg_main_thread, fsg,
pathbuf = kmalloc(PATH_MAX, GFP_KERNEL);
for (i = 0; i < fsg->nluns; ++i) {
curlun = &fsg->luns[i];
- if (backing_file_is_open(curlun)) {
+ if (fsg_lun_is_open(curlun)) {
p = NULL;
if (pathbuf) {
p = d_path(&curlun->filp->f_path,
#else
.speed = USB_SPEED_FULL,
#endif
- .function = (char *) longname,
+ .function = (char *) fsg_string_product,
.bind = fsg_bind,
.unbind = fsg_unbind,
.disconnect = fsg_disconnect,
.resume = fsg_resume,
.driver = {
- .name = (char *) shortname,
+ .name = DRIVER_NAME,
.owner = THIS_MODULE,
// .release = ...
// .suspend = ...
* Copyright (C) 2003-2008 Alan Stern
* Copyeight (C) 2009 Samsung Electronics
* Author: Michal Nazarewicz (m.nazarewicz@samsung.com)
+ *
+ * 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
+ */
+
+
+/*
+ * This file requires the following identifiers used in USB strings to
+ * be defined (each of type pointer to char):
+ * - fsg_string_manufacturer -- name of the manufacturer
+ * - fsg_string_product -- name of the product
+ * - fsg_string_serial -- product's serial
+ * - fsg_string_config -- name of the configuration
+ * - fsg_string_interface -- name of the interface
+ * The first four are only needed when FSG_DESCRIPTORS_DEVICE_STRINGS
+ * macro is defined prior to including this file.
*/
+#include <asm/unaligned.h>
+
/*-------------------------------------------------------------------------*/
/* Bulk-only data structures */
/* Command Block Wrapper */
-struct bulk_cb_wrap {
+struct fsg_bulk_cb_wrap {
__le32 Signature; // Contains 'USBC'
u32 Tag; // Unique per command id
__le32 DataTransferLength; // Size of the data
/*-------------------------------------------------------------------------*/
-struct lun {
+struct fsg_lun {
struct file *filp;
loff_t file_length;
loff_t num_sectors;
struct device dev;
};
-#define backing_file_is_open(curlun) ((curlun)->filp != NULL)
+#define fsg_lun_is_open(curlun) ((curlun)->filp != NULL)
-static struct lun *dev_to_lun(struct device *dev)
+static struct fsg_lun *fsg_lun_from_dev(struct device *dev)
{
- return container_of(dev, struct lun, dev);
+ return container_of(dev, struct fsg_lun, dev);
}
#define DELAYED_STATUS (EP0_BUFSIZE + 999) // An impossibly large value
/* Number of buffers we will use. 2 is enough for double-buffering */
-#define NUM_BUFFERS 2
+#define FSG_NUM_BUFFERS 2
enum fsg_buffer_state {
BUF_STATE_EMPTY = 0,
/*-------------------------------------------------------------------------*/
-#define STRING_MANUFACTURER 1
-#define STRING_PRODUCT 2
-#define STRING_SERIAL 3
-#define STRING_CONFIG 4
-#define STRING_INTERFACE 5
+enum {
+ FSG_STRING_MANUFACTURER = 1,
+ FSG_STRING_PRODUCT,
+ FSG_STRING_SERIAL,
+ FSG_STRING_CONFIG,
+ FSG_STRING_INTERFACE
+};
static struct usb_otg_descriptor
-otg_desc = {
- .bLength = sizeof(otg_desc),
+fsg_otg_desc = {
+ .bLength = sizeof fsg_otg_desc,
.bDescriptorType = USB_DT_OTG,
.bmAttributes = USB_OTG_SRP,
/* There is only one interface. */
static struct usb_interface_descriptor
-intf_desc = {
- .bLength = sizeof intf_desc,
+fsg_intf_desc = {
+ .bLength = sizeof fsg_intf_desc,
.bDescriptorType = USB_DT_INTERFACE,
.bNumEndpoints = 2, // Adjusted during fsg_bind()
.bInterfaceClass = USB_CLASS_MASS_STORAGE,
.bInterfaceSubClass = USB_SC_SCSI, // Adjusted during fsg_bind()
.bInterfaceProtocol = USB_PR_BULK, // Adjusted during fsg_bind()
- .iInterface = STRING_INTERFACE,
+ .iInterface = FSG_STRING_INTERFACE,
};
/* Three full-speed endpoint descriptors: bulk-in, bulk-out,
* and interrupt-in. */
static struct usb_endpoint_descriptor
-fs_bulk_in_desc = {
+fsg_fs_bulk_in_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
};
static struct usb_endpoint_descriptor
-fs_bulk_out_desc = {
+fsg_fs_bulk_out_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
};
static struct usb_endpoint_descriptor
-fs_intr_in_desc = {
+fsg_fs_intr_in_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bInterval = 32, // frames -> 32 ms
};
-static const struct usb_descriptor_header *fs_function[] = {
- (struct usb_descriptor_header *) &otg_desc,
- (struct usb_descriptor_header *) &intf_desc,
- (struct usb_descriptor_header *) &fs_bulk_in_desc,
- (struct usb_descriptor_header *) &fs_bulk_out_desc,
- (struct usb_descriptor_header *) &fs_intr_in_desc,
+static const struct usb_descriptor_header *fsg_fs_function[] = {
+ (struct usb_descriptor_header *) &fsg_otg_desc,
+ (struct usb_descriptor_header *) &fsg_intf_desc,
+ (struct usb_descriptor_header *) &fsg_fs_bulk_in_desc,
+ (struct usb_descriptor_header *) &fsg_fs_bulk_out_desc,
+ (struct usb_descriptor_header *) &fsg_fs_intr_in_desc,
NULL,
};
-#define FS_FUNCTION_PRE_EP_ENTRIES 2
+#define FSG_FS_FUNCTION_PRE_EP_ENTRIES 2
/*
* for the config descriptor.
*/
static struct usb_endpoint_descriptor
-hs_bulk_in_desc = {
+fsg_hs_bulk_in_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
};
static struct usb_endpoint_descriptor
-hs_bulk_out_desc = {
+fsg_hs_bulk_out_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
};
static struct usb_endpoint_descriptor
-hs_intr_in_desc = {
+fsg_hs_intr_in_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bInterval = 9, // 2**(9-1) = 256 uframes -> 32 ms
};
-static const struct usb_descriptor_header *hs_function[] = {
- (struct usb_descriptor_header *) &otg_desc,
- (struct usb_descriptor_header *) &intf_desc,
- (struct usb_descriptor_header *) &hs_bulk_in_desc,
- (struct usb_descriptor_header *) &hs_bulk_out_desc,
- (struct usb_descriptor_header *) &hs_intr_in_desc,
+static const struct usb_descriptor_header *fsg_hs_function[] = {
+ (struct usb_descriptor_header *) &fsg_otg_desc,
+ (struct usb_descriptor_header *) &fsg_intf_desc,
+ (struct usb_descriptor_header *) &fsg_hs_bulk_in_desc,
+ (struct usb_descriptor_header *) &fsg_hs_bulk_out_desc,
+ (struct usb_descriptor_header *) &fsg_hs_intr_in_desc,
NULL,
};
-#define HS_FUNCTION_PRE_EP_ENTRIES 2
+#define FSG_HS_FUNCTION_PRE_EP_ENTRIES 2
/* Maxpacket and other transfer characteristics vary by speed. */
static struct usb_endpoint_descriptor *
-ep_desc(struct usb_gadget *g, struct usb_endpoint_descriptor *fs,
+fsg_ep_desc(struct usb_gadget *g, struct usb_endpoint_descriptor *fs,
struct usb_endpoint_descriptor *hs)
{
if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH)
}
-/* The CBI specification limits the serial string to 12 uppercase hexadecimal
- * characters. */
-static char manufacturer[64];
-static char serial[13];
-
/* Static strings, in UTF-8 (for simplicity we use only ASCII characters) */
-static struct usb_string strings[] = {
- {STRING_MANUFACTURER, manufacturer},
- {STRING_PRODUCT, longname},
- {STRING_SERIAL, serial},
- {STRING_CONFIG, "Self-powered"},
- {STRING_INTERFACE, "Mass Storage"},
+static struct usb_string fsg_strings[] = {
+ {FSG_STRING_MANUFACTURER, fsg_string_manufacturer},
+ {FSG_STRING_PRODUCT, fsg_string_product},
+ {FSG_STRING_SERIAL, fsg_string_serial},
+ {FSG_STRING_CONFIG, fsg_string_config},
+ {FSG_STRING_INTERFACE, fsg_string_interface},
{}
};
-static struct usb_gadget_strings stringtab = {
+static struct usb_gadget_strings fsg_stringtab = {
.language = 0x0409, // en-us
- .strings = strings,
+ .strings = fsg_strings,
};
/* If the next two routines are called while the gadget is registered,
* the caller must own fsg->filesem for writing. */
-static int open_backing_file(struct lun *curlun, const char *filename)
+static int fsg_lun_open(struct fsg_lun *curlun, const char *filename)
{
int ro;
struct file *filp = NULL;
}
-static void close_backing_file(struct lun *curlun)
+static void fsg_lun_close(struct fsg_lun *curlun)
{
if (curlun->filp) {
LDBG(curlun, "close backing file\n");
/* Sync the file data, don't bother with the metadata.
* This code was copied from fs/buffer.c:sys_fdatasync(). */
-static int fsync_sub(struct lun *curlun)
+static int fsg_lun_fsync_sub(struct fsg_lun *curlun)
{
struct file *filp = curlun->filp;
projects / mirror_ubuntu-kernels.git / commitdiff