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提交 d6181702 编写于 作者: M Michal Nazarewicz 提交者： Greg Kroah-Hartman
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USB: g_file_storage: "fsg_" prefix added to some identifiers 

Prefixed some identifiers that were defined in storage_common.c file
with "fsg_".  Not all identifiers were prefixed but the ones that are
most likely to produce conflicts when used with other USB functions.
Signed-off-by: NMichal Nazarewicz <m.nazarewicz@samsung.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
上级 b6058d0f
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Showing with 183 addition and 152 deletion
drivers/usb/gadget/file_storage.c
浏览文件 @ d6181702
......@@ -248,8 +248,6 @@
#include <linux/freezer.h>
#include <linux/utsname.h>
#include <asm/unaligned.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
......@@ -274,8 +272,11 @@
#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");
......@@ -285,8 +286,8 @@ MODULE_LICENSE("Dual BSD/GPL");
*
* 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
/*
......@@ -301,11 +302,11 @@ MODULE_LICENSE("Dual BSD/GPL");
/* 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;
......@@ -332,8 +333,8 @@ static struct {
.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,
};
......@@ -434,7 +435,7 @@ struct fsg_dev {
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;
......@@ -459,7 +460,7 @@ struct fsg_dev {
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;
......@@ -484,8 +485,8 @@ struct fsg_dev {
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 *);
......@@ -549,13 +550,13 @@ device_desc = {
.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,
};
......@@ -567,7 +568,7 @@ config_desc = {
/* 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,
};
......@@ -604,9 +605,9 @@ static int populate_config_buf(struct usb_gadget *gadget,
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))
......@@ -957,7 +958,7 @@ static int standard_setup_req(struct fsg_dev *fsg,
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;
}
......@@ -1122,7 +1123,7 @@ static int sleep_thread(struct fsg_dev *fsg)
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;
......@@ -1248,7 +1249,7 @@ static int do_read(struct fsg_dev *fsg)
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;
......@@ -1437,12 +1438,12 @@ static int do_write(struct fsg_dev *fsg)
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;
......@@ -1451,7 +1452,7 @@ static int do_synchronize_cache(struct fsg_dev *fsg)
/*-------------------------------------------------------------------------*/
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;
......@@ -1463,7 +1464,7 @@ static void invalidate_sub(struct lun *curlun)
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;
......@@ -1496,7 +1497,7 @@ static int do_verify(struct fsg_dev *fsg)
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;
......@@ -1593,7 +1594,7 @@ static int do_inquiry(struct fsg_dev *fsg, struct fsg_buffhd *bh)
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;
......@@ -1647,7 +1648,7 @@ static int do_request_sense(struct fsg_dev *fsg, struct fsg_buffhd *bh)
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;
......@@ -1667,7 +1668,7 @@ static int do_read_capacity(struct fsg_dev *fsg, struct fsg_buffhd *bh)
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;
......@@ -1690,7 +1691,7 @@ static int do_read_header(struct fsg_dev *fsg, struct fsg_buffhd *bh)
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;
......@@ -1718,7 +1719,7 @@ static int do_read_toc(struct fsg_dev *fsg, struct fsg_buffhd *bh)
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;
......@@ -1799,7 +1800,7 @@ static int do_mode_sense(struct fsg_dev *fsg, struct fsg_buffhd *bh)
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) {
......@@ -1829,7 +1830,7 @@ static int do_start_stop(struct fsg_dev *fsg)
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);
}
......@@ -1837,7 +1838,7 @@ static int do_start_stop(struct fsg_dev *fsg)
/* 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;
}
......@@ -1849,7 +1850,7 @@ static int do_start_stop(struct fsg_dev *fsg)
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) {
......@@ -1864,7 +1865,7 @@ static int do_prevent_allow(struct fsg_dev *fsg)
}
if (curlun->prevent_medium_removal && !prevent)
fsync_sub(curlun);
fsg_lun_fsync_sub(curlun);
curlun->prevent_medium_removal = prevent;
return 0;
}
......@@ -1873,7 +1874,7 @@ static int do_prevent_allow(struct fsg_dev *fsg)
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;
......@@ -1890,7 +1891,7 @@ static int do_read_format_capacities(struct fsg_dev *fsg,
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;
......@@ -2133,7 +2134,7 @@ static int finish_reply(struct fsg_dev *fsg)
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;
......@@ -2225,7 +2226,7 @@ static int check_command(struct fsg_dev *fsg, int cmnd_size,
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. */
......@@ -2354,7 +2355,7 @@ static int check_command(struct fsg_dev *fsg, int cmnd_size,
/* 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;
}
......@@ -2609,8 +2610,8 @@ static int do_scsi_command(struct fsg_dev *fsg)
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))
......@@ -2639,7 +2640,7 @@ static int received_cbw(struct fsg_dev *fsg, struct fsg_buffhd *bh)
}
/* 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",
......@@ -2772,7 +2773,7 @@ static int do_set_interface(struct fsg_dev *fsg, int altsetting)
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) {
......@@ -2810,12 +2811,14 @@ static int do_set_interface(struct fsg_dev *fsg, int altsetting)
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;
......@@ -2823,14 +2826,15 @@ static int do_set_interface(struct fsg_dev *fsg, int altsetting)
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)
......@@ -2906,7 +2910,7 @@ static void handle_exception(struct fsg_dev *fsg)
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;
......@@ -2926,7 +2930,7 @@ static void handle_exception(struct fsg_dev *fsg)
/* 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);
......@@ -2937,7 +2941,7 @@ static void handle_exception(struct fsg_dev *fsg)
/* 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;
}
......@@ -2959,7 +2963,7 @@ static void handle_exception(struct fsg_dev *fsg)
* 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;
}
......@@ -3041,7 +3045,7 @@ static void handle_exception(struct fsg_dev *fsg)
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;
......@@ -3132,7 +3136,7 @@ static int fsg_main_thread(void *fsg_)
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);
}
......@@ -3140,13 +3144,13 @@ static ssize_t show_ro(struct device *dev, struct device_attribute *attr, char *
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);
......@@ -3169,7 +3173,7 @@ static ssize_t store_ro(struct device *dev, struct device_attribute *attr,
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;
......@@ -3179,7 +3183,7 @@ static ssize_t store_ro(struct device *dev, struct device_attribute *attr,
/* 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 {
......@@ -3193,11 +3197,11 @@ static ssize_t store_ro(struct device *dev, struct device_attribute *attr,
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"
}
......@@ -3208,14 +3212,14 @@ static ssize_t store_file(struct device *dev, struct device_attribute *attr,
/* 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;
......@@ -3251,7 +3255,7 @@ static void /* __init_or_exit */ fsg_unbind(struct usb_gadget *gadget)
{
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");
......@@ -3263,7 +3267,7 @@ static void /* __init_or_exit */ fsg_unbind(struct usb_gadget *gadget)
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;
}
......@@ -3279,7 +3283,7 @@ static void /* __init_or_exit */ fsg_unbind(struct usb_gadget *gadget)
}
/* 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 */
......@@ -3386,7 +3390,7 @@ static int __init fsg_bind(struct usb_gadget *gadget)
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;
......@@ -3412,7 +3416,7 @@ static int __init fsg_bind(struct usb_gadget *gadget)
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;
......@@ -3420,7 +3424,7 @@ static int __init fsg_bind(struct usb_gadget *gadget)
/* 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;
......@@ -3454,7 +3458,7 @@ static int __init fsg_bind(struct usb_gadget *gadget)
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) {
......@@ -3466,20 +3470,20 @@ static int __init fsg_bind(struct usb_gadget *gadget)
/* 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
......@@ -3493,28 +3497,28 @@ static int __init fsg_bind(struct usb_gadget *gadget)
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;
......@@ -3528,7 +3532,7 @@ static int __init fsg_bind(struct usb_gadget *gadget)
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
......@@ -3539,23 +3543,24 @@ static int __init fsg_bind(struct usb_gadget *gadget)
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,
......@@ -3571,7 +3576,7 @@ static int __init fsg_bind(struct usb_gadget *gadget)
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,
......@@ -3641,7 +3646,7 @@ static struct usb_gadget_driver fsg_driver = {
#else
.speed = USB_SPEED_FULL,
#endif
.function = (char *) longname,
.function = (char *) fsg_string_product,
.bind = fsg_bind,
.unbind = fsg_unbind,
.disconnect = fsg_disconnect,
......@@ -3650,7 +3655,7 @@ static struct usb_gadget_driver fsg_driver = {
.resume = fsg_resume,
.driver = {
.name = (char *) shortname,
.name = DRIVER_NAME,
.owner = THIS_MODULE,
// .release = ...
// .suspend = ...
......
drivers/usb/gadget/storage_common.c
浏览文件 @ d6181702
......@@ -4,9 +4,38 @@
* 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>
/*-------------------------------------------------------------------------*/
......@@ -93,7 +122,7 @@
/* 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
......@@ -191,7 +220,7 @@ struct interrupt_data {
/*-------------------------------------------------------------------------*/
struct lun {
struct fsg_lun {
struct file *filp;
loff_t file_length;
loff_t num_sectors;
......@@ -208,11 +237,11 @@ struct lun {
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);
}
......@@ -221,7 +250,7 @@ static struct lun *dev_to_lun(struct device *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,
......@@ -280,16 +309,18 @@ static inline u32 get_unaligned_be24(u8 *buf)
/*-------------------------------------------------------------------------*/
#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,
......@@ -298,22 +329,22 @@ otg_desc = {
/* 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,
......@@ -323,7 +354,7 @@ fs_bulk_in_desc = {
};
static struct usb_endpoint_descriptor
fs_bulk_out_desc = {
fsg_fs_bulk_out_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
......@@ -333,7 +364,7 @@ fs_bulk_out_desc = {
};
static struct usb_endpoint_descriptor
fs_intr_in_desc = {
fsg_fs_intr_in_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
......@@ -343,15 +374,15 @@ fs_intr_in_desc = {
.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
/*
......@@ -363,7 +394,7 @@ static const struct usb_descriptor_header *fs_function[] = {
* 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,
......@@ -373,7 +404,7 @@ hs_bulk_in_desc = {
};
static struct usb_endpoint_descriptor
hs_bulk_out_desc = {
fsg_hs_bulk_out_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
......@@ -384,7 +415,7 @@ hs_bulk_out_desc = {
};
static struct usb_endpoint_descriptor
hs_intr_in_desc = {
fsg_hs_intr_in_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
......@@ -394,19 +425,19 @@ hs_intr_in_desc = {
.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)
......@@ -415,24 +446,19 @@ ep_desc(struct usb_gadget *g, struct usb_endpoint_descriptor *fs,
}
/* 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,
};
......@@ -441,7 +467,7 @@ static struct usb_gadget_strings stringtab = {
/* 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;
......@@ -525,7 +551,7 @@ static int open_backing_file(struct lun *curlun, const char *filename)
}
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");
......@@ -539,7 +565,7 @@ static void close_backing_file(struct lun *curlun)
/* 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;
......
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