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-rw-r--r--drivers/usb/gadget/Kconfig34
-rw-r--r--drivers/usb/gadget/Makefile5
-rw-r--r--drivers/usb/gadget/acm_ms.c125
-rw-r--r--drivers/usb/gadget/amd5536udc.c2
-rw-r--r--drivers/usb/gadget/composite.c2
-rw-r--r--drivers/usb/gadget/configfs.c10
-rw-r--r--drivers/usb/gadget/configfs.h6
-rw-r--r--drivers/usb/gadget/dummy_hcd.c6
-rw-r--r--drivers/usb/gadget/f_mass_storage.c1254
-rw-r--r--drivers/usb/gadget/f_mass_storage.h166
-rw-r--r--drivers/usb/gadget/g_ffs.c2
-rw-r--r--drivers/usb/gadget/goku_udc.c3
-rw-r--r--drivers/usb/gadget/mass_storage.c125
-rw-r--r--drivers/usb/gadget/multi.c247
-rw-r--r--drivers/usb/gadget/mv_u3d_core.c4
-rw-r--r--drivers/usb/gadget/net2280.c5
-rw-r--r--drivers/usb/gadget/pch_udc.c1
-rw-r--r--drivers/usb/gadget/rndis.c2
-rw-r--r--drivers/usb/gadget/s3c-hsotg.c167
-rw-r--r--drivers/usb/gadget/storage_common.c430
-rw-r--r--drivers/usb/gadget/storage_common.h229
-rw-r--r--drivers/usb/gadget/tcm_usb_gadget.c4
-rw-r--r--drivers/usb/gadget/udc-core.c3
-rw-r--r--drivers/usb/gadget/zero.c25
24 files changed, 2050 insertions, 807 deletions
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index 48cddf3cd6b8..a91e6422f930 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -58,6 +58,20 @@ config USB_GADGET_DEBUG
trying to track down. Never enable these messages for a
production build.
+config USB_GADGET_VERBOSE
+ bool "Verbose debugging Messages (DEVELOPMENT)"
+ depends on USB_GADGET_DEBUG
+ help
+ Many controller and gadget drivers will print verbose debugging
+ messages if you use this option to ask for those messages.
+
+ Avoid enabling these messages, even if you're actively
+ debugging such a driver. Many drivers will emit so many
+ messages that the driver timings are affected, which will
+ either create new failure modes or remove the one you're
+ trying to track down. Never enable these messages for a
+ production build.
+
config USB_GADGET_DEBUG_FILES
boolean "Debugging information files (DEVELOPMENT)"
depends on PROC_FS
@@ -525,6 +539,9 @@ config USB_F_SUBSET
config USB_F_RNDIS
tristate
+config USB_F_MASS_STORAGE
+ tristate
+
choice
tristate "USB Gadget Drivers"
default USB_ETH
@@ -662,6 +679,16 @@ config USB_CONFIGFS_PHONET
help
The Phonet protocol implementation for USB device.
+config USB_CONFIGFS_MASS_STORAGE
+ boolean "Mass storage"
+ depends on USB_CONFIGFS
+ select USB_F_MASS_STORAGE
+ help
+ The Mass Storage Gadget acts as a USB Mass Storage disk drive.
+ As its storage repository it can use a regular file or a block
+ device (in much the same way as the "loop" device driver),
+ specified as a module parameter or sysfs option.
+
config USB_ZERO
tristate "Gadget Zero (DEVELOPMENT)"
select USB_LIBCOMPOSITE
@@ -878,6 +905,7 @@ config USB_MASS_STORAGE
tristate "Mass Storage Gadget"
depends on BLOCK
select USB_LIBCOMPOSITE
+ select USB_F_MASS_STORAGE
help
The Mass Storage Gadget acts as a USB Mass Storage disk drive.
As its storage repository it can use a regular file or a block
@@ -1001,6 +1029,7 @@ config USB_G_ACM_MS
select USB_LIBCOMPOSITE
select USB_U_SERIAL
select USB_F_ACM
+ select USB_F_MASS_STORAGE
help
This driver provides two functions in one configuration:
a mass storage, and a CDC ACM (serial port) link.
@@ -1015,8 +1044,8 @@ config USB_G_MULTI
select USB_LIBCOMPOSITE
select USB_U_SERIAL
select USB_U_ETHER
- select USB_U_RNDIS
select USB_F_ACM
+ select USB_F_MASS_STORAGE
help
The Multifunction Composite Gadget provides Ethernet (RNDIS
and/or CDC Ethernet), mass storage and ACM serial link
@@ -1035,6 +1064,8 @@ config USB_G_MULTI
config USB_G_MULTI_RNDIS
bool "RNDIS + CDC Serial + Storage configuration"
depends on USB_G_MULTI
+ select USB_U_RNDIS
+ select USB_F_RNDIS
default y
help
This option enables a configuration with RNDIS, CDC Serial and
@@ -1048,6 +1079,7 @@ config USB_G_MULTI_CDC
bool "CDC Ethernet + CDC Serial + Storage configuration"
depends on USB_G_MULTI
default n
+ select USB_F_ECM
help
This option enables a configuration with CDC Ethernet (ECM), CDC
Serial and Mass Storage functions available in the Multifunction
diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile
index 386db9daf1d9..f1af39603d4d 100644
--- a/drivers/usb/gadget/Makefile
+++ b/drivers/usb/gadget/Makefile
@@ -1,7 +1,8 @@
#
# USB peripheral controller drivers
#
-ccflags-$(CONFIG_USB_GADGET_DEBUG) := -DDEBUG
+ccflags-$(CONFIG_USB_GADGET_DEBUG) := -DDEBUG
+ccflags-$(CONFIG_USB_GADGET_VERBOSE) += -DVERBOSE_DEBUG
obj-$(CONFIG_USB_GADGET) += udc-core.o
obj-$(CONFIG_USB_LIBCOMPOSITE) += libcomposite.o
@@ -60,6 +61,8 @@ usb_f_ecm_subset-y := f_subset.o
obj-$(CONFIG_USB_F_SUBSET) += usb_f_ecm_subset.o
usb_f_rndis-y := f_rndis.o
obj-$(CONFIG_USB_F_RNDIS) += usb_f_rndis.o
+usb_f_mass_storage-y := f_mass_storage.o storage_common.o
+obj-$(CONFIG_USB_F_MASS_STORAGE)+= usb_f_mass_storage.o
#
# USB gadget drivers
diff --git a/drivers/usb/gadget/acm_ms.c b/drivers/usb/gadget/acm_ms.c
index 4b947bb50f62..7bfa134fe0e3 100644
--- a/drivers/usb/gadget/acm_ms.c
+++ b/drivers/usb/gadget/acm_ms.c
@@ -31,16 +31,7 @@
#define ACM_MS_VENDOR_NUM 0x1d6b /* Linux Foundation */
#define ACM_MS_PRODUCT_NUM 0x0106 /* Composite Gadget: ACM + MS*/
-/*-------------------------------------------------------------------------*/
-
-/*
- * Kbuild is not very cooperative with respect to linking separately
- * compiled library objects into one module. So for now we won't use
- * separate compilation ... ensuring init/exit sections work to shrink
- * the runtime footprint, and giving us at least some parts of what
- * a "gcc --combine ... part1.c part2.c part3.c ... " build would.
- */
-#include "f_mass_storage.c"
+#include "f_mass_storage.h"
/*-------------------------------------------------------------------------*/
USB_GADGET_COMPOSITE_OPTIONS();
@@ -104,18 +95,35 @@ static struct usb_gadget_strings *dev_strings[] = {
/****************************** Configurations ******************************/
static struct fsg_module_parameters fsg_mod_data = { .stall = 1 };
-FSG_MODULE_PARAMETERS(/* no prefix */, fsg_mod_data);
+#ifdef CONFIG_USB_GADGET_DEBUG_FILES
-static struct fsg_common fsg_common;
+static unsigned int fsg_num_buffers = CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS;
+
+#else
+
+/*
+ * Number of buffers we will use.
+ * 2 is usually enough for good buffering pipeline
+ */
+#define fsg_num_buffers CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS
+
+#endif /* CONFIG_USB_DEBUG */
+
+FSG_MODULE_PARAMETERS(/* no prefix */, fsg_mod_data);
/*-------------------------------------------------------------------------*/
static struct usb_function *f_acm;
static struct usb_function_instance *f_acm_inst;
+
+static struct usb_function_instance *fi_msg;
+static struct usb_function *f_msg;
+
/*
* We _always_ have both ACM and mass storage functions.
*/
static int __init acm_ms_do_config(struct usb_configuration *c)
{
+ struct fsg_opts *opts;
int status;
if (gadget_is_otg(c->cdev->gadget)) {
@@ -123,31 +131,37 @@ static int __init acm_ms_do_config(struct usb_configuration *c)
c->bmAttributes |= USB_CONFIG_ATT_WAKEUP;
}
- f_acm_inst = usb_get_function_instance("acm");
- if (IS_ERR(f_acm_inst))
- return PTR_ERR(f_acm_inst);
+ opts = fsg_opts_from_func_inst(fi_msg);
f_acm = usb_get_function(f_acm_inst);
- if (IS_ERR(f_acm)) {
- status = PTR_ERR(f_acm);
- goto err_func;
+ if (IS_ERR(f_acm))
+ return PTR_ERR(f_acm);
+
+ f_msg = usb_get_function(fi_msg);
+ if (IS_ERR(f_msg)) {
+ status = PTR_ERR(f_msg);
+ goto put_acm;
}
status = usb_add_function(c, f_acm);
if (status < 0)
- goto err_conf;
+ goto put_msg;
- status = fsg_bind_config(c->cdev, c, &fsg_common);
- if (status < 0)
- goto err_fsg;
+ status = fsg_common_run_thread(opts->common);
+ if (status)
+ goto remove_acm;
+
+ status = usb_add_function(c, f_msg);
+ if (status)
+ goto remove_acm;
return 0;
-err_fsg:
+remove_acm:
usb_remove_function(c, f_acm);
-err_conf:
+put_msg:
+ usb_put_function(f_msg);
+put_acm:
usb_put_function(f_acm);
-err_func:
- usb_put_function_instance(f_acm_inst);
return status;
}
@@ -163,45 +177,82 @@ static struct usb_configuration acm_ms_config_driver = {
static int __init acm_ms_bind(struct usb_composite_dev *cdev)
{
struct usb_gadget *gadget = cdev->gadget;
+ struct fsg_opts *opts;
+ struct fsg_config config;
int status;
- void *retp;
- /* set up mass storage function */
- retp = fsg_common_from_params(&fsg_common, cdev, &fsg_mod_data);
- if (IS_ERR(retp)) {
- status = PTR_ERR(retp);
- return PTR_ERR(retp);
+ f_acm_inst = usb_get_function_instance("acm");
+ if (IS_ERR(f_acm_inst))
+ return PTR_ERR(f_acm_inst);
+
+ fi_msg = usb_get_function_instance("mass_storage");
+ if (IS_ERR(fi_msg)) {
+ status = PTR_ERR(fi_msg);
+ goto fail_get_msg;
}
+ /* set up mass storage function */
+ fsg_config_from_params(&config, &fsg_mod_data, fsg_num_buffers);
+ opts = fsg_opts_from_func_inst(fi_msg);
+
+ opts->no_configfs = true;
+ status = fsg_common_set_num_buffers(opts->common, fsg_num_buffers);
+ if (status)
+ goto fail;
+
+ status = fsg_common_set_nluns(opts->common, config.nluns);
+ if (status)
+ goto fail_set_nluns;
+
+ status = fsg_common_set_cdev(opts->common, cdev, config.can_stall);
+ if (status)
+ goto fail_set_cdev;
+
+ fsg_common_set_sysfs(opts->common, true);
+ status = fsg_common_create_luns(opts->common, &config);
+ if (status)
+ goto fail_set_cdev;
+
+ fsg_common_set_inquiry_string(opts->common, config.vendor_name,
+ config.product_name);
/*
* Allocate string descriptor numbers ... note that string
* contents can be overridden by the composite_dev glue.
*/
status = usb_string_ids_tab(cdev, strings_dev);
if (status < 0)
- goto fail1;
+ goto fail_string_ids;
device_desc.iManufacturer = strings_dev[USB_GADGET_MANUFACTURER_IDX].id;
device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id;
/* register our configuration */
status = usb_add_config(cdev, &acm_ms_config_driver, acm_ms_do_config);
if (status < 0)
- goto fail1;
+ goto fail_string_ids;
usb_composite_overwrite_options(cdev, &coverwrite);
dev_info(&gadget->dev, "%s, version: " DRIVER_VERSION "\n",
DRIVER_DESC);
- fsg_common_put(&fsg_common);
return 0;
/* error recovery */
-fail1:
- fsg_common_put(&fsg_common);
+fail_string_ids:
+ fsg_common_remove_luns(opts->common);
+fail_set_cdev:
+ fsg_common_free_luns(opts->common);
+fail_set_nluns:
+ fsg_common_free_buffers(opts->common);
+fail:
+ usb_put_function_instance(fi_msg);
+fail_get_msg:
+ usb_put_function_instance(f_acm_inst);
return status;
}
static int __exit acm_ms_unbind(struct usb_composite_dev *cdev)
{
+ usb_put_function(f_msg);
+ usb_put_function_instance(fi_msg);
usb_put_function(f_acm);
usb_put_function_instance(f_acm_inst);
return 0;
diff --git a/drivers/usb/gadget/amd5536udc.c b/drivers/usb/gadget/amd5536udc.c
index a9a4346c83aa..54a1e2954cea 100644
--- a/drivers/usb/gadget/amd5536udc.c
+++ b/drivers/usb/gadget/amd5536udc.c
@@ -3078,8 +3078,6 @@ static void udc_pci_remove(struct pci_dev *pdev)
if (dev->active)
pci_disable_device(pdev);
- pci_set_drvdata(pdev, NULL);
-
udc_remove(dev);
}
diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index d4f0f3305759..3e7ae707f691 100644
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -354,7 +354,7 @@ static u8 encode_bMaxPower(enum usb_device_speed speed,
return DIV_ROUND_UP(val, 8);
default:
return DIV_ROUND_UP(val, 2);
- };
+ }
}
static int config_buf(struct usb_configuration *config,
diff --git a/drivers/usb/gadget/configfs.c b/drivers/usb/gadget/configfs.c
index 8f0d6141e5e6..25885112fa35 100644
--- a/drivers/usb/gadget/configfs.c
+++ b/drivers/usb/gadget/configfs.c
@@ -557,7 +557,7 @@ static struct config_group *function_make(
fi = usb_get_function_instance(func_name);
if (IS_ERR(fi))
- return ERR_PTR(PTR_ERR(fi));
+ return ERR_CAST(fi);
ret = config_item_set_name(&fi->group.cg_item, name);
if (ret) {
@@ -991,6 +991,14 @@ static struct configfs_subsystem gadget_subsys = {
.su_mutex = __MUTEX_INITIALIZER(gadget_subsys.su_mutex),
};
+void unregister_gadget_item(struct config_item *item)
+{
+ struct gadget_info *gi = to_gadget_info(item);
+
+ unregister_gadget(gi);
+}
+EXPORT_SYMBOL(unregister_gadget_item);
+
static int __init gadget_cfs_init(void)
{
int ret;
diff --git a/drivers/usb/gadget/configfs.h b/drivers/usb/gadget/configfs.h
new file mode 100644
index 000000000000..a7b564a913d1
--- /dev/null
+++ b/drivers/usb/gadget/configfs.h
@@ -0,0 +1,6 @@
+#ifndef USB__GADGET__CONFIGFS__H
+#define USB__GADGET__CONFIGFS__H
+
+void unregister_gadget_item(struct config_item *item);
+
+#endif /* USB__GADGET__CONFIGFS__H */
diff --git a/drivers/usb/gadget/dummy_hcd.c b/drivers/usb/gadget/dummy_hcd.c
index b8a2376971a4..8f4dae310923 100644
--- a/drivers/usb/gadget/dummy_hcd.c
+++ b/drivers/usb/gadget/dummy_hcd.c
@@ -544,7 +544,7 @@ static int dummy_enable(struct usb_ep *_ep,
default:
val = "ctrl";
break;
- }; val; }),
+ } val; }),
max, ep->stream_en ? "enabled" : "disabled");
/* at this point real hardware should be NAKing transfers
@@ -2271,7 +2271,7 @@ static inline ssize_t show_urb(char *buf, size_t size, struct urb *urb)
default:
s = "?";
break;
- }; s; }),
+ } s; }),
ep, ep ? (usb_pipein(urb->pipe) ? "in" : "out") : "",
({ char *s; \
switch (usb_pipetype(urb->pipe)) { \
@@ -2287,7 +2287,7 @@ static inline ssize_t show_urb(char *buf, size_t size, struct urb *urb)
default: \
s = "-iso"; \
break; \
- }; s; }),
+ } s; }),
urb->actual_length, urb->transfer_buffer_length);
}
diff --git a/drivers/usb/gadget/f_mass_storage.c b/drivers/usb/gadget/f_mass_storage.c
index a01d7d38c016..a03ba2c83589 100644
--- a/drivers/usb/gadget/f_mass_storage.c
+++ b/drivers/usb/gadget/f_mass_storage.c
@@ -213,12 +213,14 @@
#include <linux/spinlock.h>
#include <linux/string.h>
#include <linux/freezer.h>
+#include <linux/module.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
#include <linux/usb/composite.h>
#include "gadget_chips.h"
+#include "configfs.h"
/*------------------------------------------------------------------------*/
@@ -228,26 +230,30 @@
static const char fsg_string_interface[] = "Mass Storage";
-#include "storage_common.c"
+#include "storage_common.h"
+#include "f_mass_storage.h"
+/* Static strings, in UTF-8 (for simplicity we use only ASCII characters) */
+static struct usb_string fsg_strings[] = {
+ {FSG_STRING_INTERFACE, fsg_string_interface},
+ {}
+};
+
+static struct usb_gadget_strings fsg_stringtab = {
+ .language = 0x0409, /* en-us */
+ .strings = fsg_strings,
+};
+
+static struct usb_gadget_strings *fsg_strings_array[] = {
+ &fsg_stringtab,
+ NULL,
+};
/*-------------------------------------------------------------------------*/
struct fsg_dev;
struct fsg_common;
-/* FSF callback functions */
-struct fsg_operations {
- /*
- * Callback function to call when thread exits. If no
- * callback is set or it returns value lower then zero MSF
- * will force eject all LUNs it operates on (including those
- * marked as non-removable or with prevent_medium_removal flag
- * set).
- */
- int (*thread_exits)(struct fsg_common *common);
-};
-
/* Data shared by all the FSG instances. */
struct fsg_common {
struct usb_gadget *gadget;
@@ -268,13 +274,14 @@ struct fsg_common {
struct fsg_buffhd *next_buffhd_to_fill;
struct fsg_buffhd *next_buffhd_to_drain;
struct fsg_buffhd *buffhds;
+ unsigned int fsg_num_buffers;
int cmnd_size;
u8 cmnd[MAX_COMMAND_SIZE];
unsigned int nluns;
unsigned int lun;
- struct fsg_lun *luns;
+ struct fsg_lun **luns;
struct fsg_lun *curlun;
unsigned int bulk_out_maxpacket;
@@ -294,6 +301,7 @@ struct fsg_common {
unsigned int short_packet_received:1;
unsigned int bad_lun_okay:1;
unsigned int running:1;
+ unsigned int sysfs:1;
int thread_wakeup_needed;
struct completion thread_notifier;
@@ -313,27 +321,6 @@ struct fsg_common {
struct kref ref;
};
-struct fsg_config {
- unsigned nluns;
- struct fsg_lun_config {
- const char *filename;
- char ro;
- char removable;
- char cdrom;
- char nofua;
- } luns[FSG_MAX_LUNS];
-
- /* Callback functions. */
- const struct fsg_operations *ops;
- /* Gadget's private data. */
- void *private_data;
-
- const char *vendor_name; /* 8 characters or less */
- const char *product_name; /* 16 characters or less */
-
- char can_stall;
-};
-
struct fsg_dev {
struct usb_function function;
struct usb_gadget *gadget; /* Copy of cdev->gadget */
@@ -2172,7 +2159,7 @@ static int received_cbw(struct fsg_dev *fsg, struct fsg_buffhd *bh)
common->data_dir = DATA_DIR_NONE;
common->lun = cbw->Lun;
if (common->lun < common->nluns)
- common->curlun = &common->luns[common->lun];
+ common->curlun = common->luns[common->lun];
else
common->curlun = NULL;
common->tag = cbw->Tag;
@@ -2244,7 +2231,7 @@ reset:
if (common->fsg) {
fsg = common->fsg;
- for (i = 0; i < fsg_num_buffers; ++i) {
+ for (i = 0; i < common->fsg_num_buffers; ++i) {
struct fsg_buffhd *bh = &common->buffhds[i];
if (bh->inreq) {
@@ -2303,7 +2290,7 @@ reset:
clear_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags);
/* Allocate the requests */
- for (i = 0; i < fsg_num_buffers; ++i) {
+ for (i = 0; i < common->fsg_num_buffers; ++i) {
struct fsg_buffhd *bh = &common->buffhds[i];
rc = alloc_request(common, fsg->bulk_in, &bh->inreq);
@@ -2320,7 +2307,9 @@ reset:
common->running = 1;
for (i = 0; i < common->nluns; ++i)
- common->luns[i].unit_attention_data = SS_RESET_OCCURRED;
+ if (common->luns[i])
+ common->luns[i]->unit_attention_data =
+ SS_RESET_OCCURRED;
return rc;
}
@@ -2372,7 +2361,7 @@ static void handle_exception(struct fsg_common *common)
/* Cancel all the pending transfers */
if (likely(common->fsg)) {
- for (i = 0; i < fsg_num_buffers; ++i) {
+ for (i = 0; i < common->fsg_num_buffers; ++i) {
bh = &common->buffhds[i];
if (bh->inreq_busy)
usb_ep_dequeue(common->fsg->bulk_in, bh->inreq);
@@ -2384,7 +2373,7 @@ static void handle_exception(struct fsg_common *common)
/* Wait until everything is idle */
for (;;) {
int num_active = 0;
- for (i = 0; i < fsg_num_buffers; ++i) {
+ for (i = 0; i < common->fsg_num_buffers; ++i) {
bh = &common->buffhds[i];
num_active += bh->inreq_busy + bh->outreq_busy;
}
@@ -2407,7 +2396,7 @@ static void handle_exception(struct fsg_common *common)
*/
spin_lock_irq(&common->lock);
- for (i = 0; i < fsg_num_buffers; ++i) {
+ for (i = 0; i < common->fsg_num_buffers; ++i) {
bh = &common->buffhds[i];
bh->state = BUF_STATE_EMPTY;
}
@@ -2420,7 +2409,9 @@ static void handle_exception(struct fsg_common *common)
common->state = FSG_STATE_STATUS_PHASE;
else {
for (i = 0; i < common->nluns; ++i) {
- curlun = &common->luns[i];
+ curlun = common->luns[i];
+ if (!curlun)
+ continue;
curlun->prevent_medium_removal = 0;
curlun->sense_data = SS_NO_SENSE;
curlun->unit_attention_data = SS_NO_SENSE;
@@ -2462,8 +2453,9 @@ static void handle_exception(struct fsg_common *common)
* CONFIG_CHANGE cases.
*/
/* for (i = 0; i < common->nluns; ++i) */
- /* common->luns[i].unit_attention_data = */
- /* SS_RESET_OCCURRED; */
+ /* if (common->luns[i]) */
+ /* common->luns[i]->unit_attention_data = */
+ /* SS_RESET_OCCURRED; */
break;
case FSG_STATE_CONFIG_CHANGE:
@@ -2559,12 +2551,13 @@ static int fsg_main_thread(void *common_)
if (!common->ops || !common->ops->thread_exits
|| common->ops->thread_exits(common) < 0) {
- struct fsg_lun *curlun = common->luns;
+ struct fsg_lun **curlun_it = common->luns;
unsigned i = common->nluns;
down_write(&common->filesem);
- for (; i--; ++curlun) {
- if (!fsg_lun_is_open(curlun))
+ for (; i--; ++curlun_it) {
+ struct fsg_lun *curlun = *curlun_it;
+ if (!curlun || !fsg_lun_is_open(curlun))
continue;
fsg_lun_close(curlun);
@@ -2580,6 +2573,56 @@ static int fsg_main_thread(void *common_)
/*************************** DEVICE ATTRIBUTES ***************************/
+static ssize_t ro_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct fsg_lun *curlun = fsg_lun_from_dev(dev);
+
+ return fsg_show_ro(curlun, buf);
+}
+
+static ssize_t nofua_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct fsg_lun *curlun = fsg_lun_from_dev(dev);
+
+ return fsg_show_nofua(curlun, buf);
+}
+
+static ssize_t file_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct fsg_lun *curlun = fsg_lun_from_dev(dev);
+ struct rw_semaphore *filesem = dev_get_drvdata(dev);
+
+ return fsg_show_file(curlun, filesem, buf);
+}
+
+static ssize_t ro_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct fsg_lun *curlun = fsg_lun_from_dev(dev);
+ struct rw_semaphore *filesem = dev_get_drvdata(dev);
+
+ return fsg_store_ro(curlun, filesem, buf, count);
+}
+
+static ssize_t nofua_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct fsg_lun *curlun = fsg_lun_from_dev(dev);
+
+ return fsg_store_nofua(curlun, buf, count);
+}
+
+static ssize_t file_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct fsg_lun *curlun = fsg_lun_from_dev(dev);
+ struct rw_semaphore *filesem = dev_get_drvdata(dev);
+
+ return fsg_store_file(curlun, filesem, buf, count);
+}
+
static DEVICE_ATTR_RW(ro);
static DEVICE_ATTR_RW(nofua);
static DEVICE_ATTR_RW(file);
@@ -2597,221 +2640,422 @@ static void fsg_lun_release(struct device *dev)
/* Nothing needs to be done */
}
-static inline void fsg_common_get(struct fsg_common *common)
+void fsg_common_get(struct fsg_common *common)
{
kref_get(&common->ref);
}
+EXPORT_SYMBOL_GPL(fsg_common_get);
-static inline void fsg_common_put(struct fsg_common *common)
+void fsg_common_put(struct fsg_common *common)
{
kref_put(&common->ref, fsg_common_release);
}
+EXPORT_SYMBOL_GPL(fsg_common_put);
-static struct fsg_common *fsg_common_init(struct fsg_common *common,
- struct usb_composite_dev *cdev,
- struct fsg_config *cfg)
+/* check if fsg_num_buffers is within a valid range */
+static inline int fsg_num_buffers_validate(unsigned int fsg_num_buffers)
{
- struct usb_gadget *gadget = cdev->gadget;
- struct fsg_buffhd *bh;
- struct fsg_lun *curlun;
- struct fsg_lun_config *lcfg;
- int nluns, i, rc;
- char *pathbuf;
-
- rc = fsg_num_buffers_validate();
- if (rc != 0)
- return ERR_PTR(rc);
-
- /* Find out how many LUNs there should be */
- nluns = cfg->nluns;
- if (nluns < 1 || nluns > FSG_MAX_LUNS) {
- dev_err(&gadget->dev, "invalid number of LUNs: %u\n", nluns);
- return ERR_PTR(-EINVAL);
- }
+ if (fsg_num_buffers >= 2 && fsg_num_buffers <= 4)
+ return 0;
+ pr_err("fsg_num_buffers %u is out of range (%d to %d)\n",
+ fsg_num_buffers, 2, 4);
+ return -EINVAL;
+}
- /* Allocate? */
+static struct fsg_common *fsg_common_setup(struct fsg_common *common)
+{
if (!common) {
- common = kzalloc(sizeof *common, GFP_KERNEL);
+ common = kzalloc(sizeof(*common), GFP_KERNEL);
if (!common)
return ERR_PTR(-ENOMEM);
common->free_storage_on_release = 1;
} else {
- memset(common, 0, sizeof *common);
common->free_storage_on_release = 0;
}
+ init_rwsem(&common->filesem);
+ spin_lock_init(&common->lock);
+ kref_init(&common->ref);
+ init_completion(&common->thread_notifier);
+ init_waitqueue_head(&common->fsg_wait);
+ common->state = FSG_STATE_TERMINATED;
- common->buffhds = kcalloc(fsg_num_buffers,
- sizeof *(common->buffhds), GFP_KERNEL);
- if (!common->buffhds) {
- if (common->free_storage_on_release)
- kfree(common);
- return ERR_PTR(-ENOMEM);
+ return common;
+}
+
+void fsg_common_set_sysfs(struct fsg_common *common, bool sysfs)
+{
+ common->sysfs = sysfs;
+}
+EXPORT_SYMBOL_GPL(fsg_common_set_sysfs);
+
+static void _fsg_common_free_buffers(struct fsg_buffhd *buffhds, unsigned n)
+{
+ if (buffhds) {
+ struct fsg_buffhd *bh = buffhds;
+ while (n--) {
+ kfree(bh->buf);
+ ++bh;
+ }
+ kfree(buffhds);
}
+}
- common->ops = cfg->ops;
- common->private_data = cfg->private_data;
+int fsg_common_set_num_buffers(struct fsg_common *common, unsigned int n)
+{
+ struct fsg_buffhd *bh, *buffhds;
+ int i, rc;
- common->gadget = gadget;
- common->ep0 = gadget->ep0;
- common->ep0req = cdev->req;
- common->cdev = cdev;
+ rc = fsg_num_buffers_validate(n);
+ if (rc != 0)
+ return rc;
+
+ buffhds = kcalloc(n, sizeof(*buffhds), GFP_KERNEL);
+ if (!buffhds)
+ return -ENOMEM;
- /* Maybe allocate device-global string IDs, and patch descriptors */
- if (fsg_strings[FSG_STRING_INTERFACE].id == 0) {
- rc = usb_string_id(cdev);
- if (unlikely(rc < 0))
+ /* Data buffers cyclic list */
+ bh = buffhds;
+ i = n;
+ goto buffhds_first_it;
+ do {
+ bh->next = bh + 1;
+ ++bh;
+buffhds_first_it:
+ bh->buf = kmalloc(FSG_BUFLEN, GFP_KERNEL);
+ if (unlikely(!bh->buf))
goto error_release;
- fsg_strings[FSG_STRING_INTERFACE].id = rc;
- fsg_intf_desc.iInterface = rc;
- }
+ } while (--i);
+ bh->next = buffhds;
+ _fsg_common_free_buffers(common->buffhds, common->fsg_num_buffers);
+ common->fsg_num_buffers = n;
+ common->buffhds = buffhds;
+
+ return 0;
+
+error_release:
/*
- * Create the LUNs, open their backing files, and register the
- * LUN devices in sysfs.
+ * "buf"s pointed to by heads after n - i are NULL
+ * so releasing them won't hurt
*/
- curlun = kcalloc(nluns, sizeof(*curlun), GFP_KERNEL);
- if (unlikely(!curlun)) {
- rc = -ENOMEM;
- goto error_release;
+ _fsg_common_free_buffers(buffhds, n);
+
+ return -ENOMEM;
+}
+EXPORT_SYMBOL_GPL(fsg_common_set_num_buffers);
+
+static inline void fsg_common_remove_sysfs(struct fsg_lun *lun)
+{
+ device_remove_file(&lun->dev, &dev_attr_nofua);
+ /*
+ * device_remove_file() =>
+ *
+ * here the attr (e.g. dev_attr_ro) is only used to be passed to:
+ *
+ * sysfs_remove_file() =>
+ *
+ * here e.g. both dev_attr_ro_cdrom and dev_attr_ro are in
+ * the same namespace and
+ * from here only attr->name is passed to:
+ *
+ * sysfs_hash_and_remove()
+ *
+ * attr->name is the same for dev_attr_ro_cdrom and
+ * dev_attr_ro
+ * attr->name is the same for dev_attr_file and
+ * dev_attr_file_nonremovable
+ *
+ * so we don't differentiate between removing e.g. dev_attr_ro_cdrom
+ * and dev_attr_ro
+ */
+ device_remove_file(&lun->dev, &dev_attr_ro);
+ device_remove_file(&lun->dev, &dev_attr_file);
+}
+
+void fsg_common_remove_lun(struct fsg_lun *lun, bool sysfs)
+{
+ if (sysfs) {
+ fsg_common_remove_sysfs(lun);
+ device_unregister(&lun->dev);
}
- common->luns = curlun;
+ fsg_lun_close(lun);
+ kfree(lun);
+}
+EXPORT_SYMBOL_GPL(fsg_common_remove_lun);
- init_rwsem(&common->filesem);
+static void _fsg_common_remove_luns(struct fsg_common *common, int n)
+{
+ int i;
- for (i = 0, lcfg = cfg->luns; i < nluns; ++i, ++curlun, ++lcfg) {
- curlun->cdrom = !!lcfg->cdrom;
- curlun->ro = lcfg->cdrom || lcfg->ro;
- curlun->initially_ro = curlun->ro;
- curlun->removable = lcfg->removable;
- curlun->dev.release = fsg_lun_release;
- curlun->dev.parent = &gadget->dev;
- /* curlun->dev.driver = &fsg_driver.driver; XXX */
- dev_set_drvdata(&curlun->dev, &common->filesem);
- dev_set_name(&curlun->dev, "lun%d", i);
-
- rc = device_register(&curlun->dev);
- if (rc) {
- INFO(common, "failed to register LUN%d: %d\n", i, rc);
- common->nluns = i;
- put_device(&curlun->dev);
- goto error_release;
+ for (i = 0; i < n; ++i)
+ if (common->luns[i]) {
+ fsg_common_remove_lun(common->luns[i], common->sysfs);
+ common->luns[i] = NULL;
}
+}
+EXPORT_SYMBOL_GPL(fsg_common_remove_luns);
- rc = device_create_file(&curlun->dev,
- curlun->cdrom
- ? &dev_attr_ro_cdrom
- : &dev_attr_ro);
- if (rc)
- goto error_luns;
- rc = device_create_file(&curlun->dev,
- curlun->removable
- ? &dev_attr_file
- : &dev_attr_file_nonremovable);
- if (rc)
- goto error_luns;
- rc = device_create_file(&curlun->dev, &dev_attr_nofua);
- if (rc)
- goto error_luns;
+void fsg_common_remove_luns(struct fsg_common *common)
+{
+ _fsg_common_remove_luns(common, common->nluns);
+}
- if (lcfg->filename) {
- rc = fsg_lun_open(curlun, lcfg->filename);
- if (rc)
- goto error_luns;
- } else if (!curlun->removable) {
- ERROR(common, "no file given for LUN%d\n", i);
- rc = -EINVAL;
- goto error_luns;
- }
+void fsg_common_free_luns(struct fsg_common *common)
+{
+ fsg_common_remove_luns(common);
+ kfree(common->luns);
+ common->luns = NULL;
+}
+EXPORT_SYMBOL_GPL(fsg_common_free_luns);
+
+int fsg_common_set_nluns(struct fsg_common *common, int nluns)
+{
+ struct fsg_lun **curlun;
+
+ /* Find out how many LUNs there should be */
+ if (nluns < 1 || nluns > FSG_MAX_LUNS) {
+ pr_err("invalid number of LUNs: %u\n", nluns);
+ return -EINVAL;
}
+
+ curlun = kcalloc(nluns, sizeof(*curlun), GFP_KERNEL);
+ if (unlikely(!curlun))
+ return -ENOMEM;
+
+ if (common->luns)
+ fsg_common_free_luns(common);
+
+ common->luns = curlun;
common->nluns = nluns;
- /* Data buffers cyclic list */
- bh = common->buffhds;
- i = fsg_num_buffers;
- goto buffhds_first_it;
- do {
- bh->next = bh + 1;
- ++bh;
-buffhds_first_it:
- bh->buf = kmalloc(FSG_BUFLEN, GFP_KERNEL);
- if (unlikely(!bh->buf)) {
- rc = -ENOMEM;
- goto error_release;
- }
- } while (--i);
- bh->next = common->buffhds;
+ pr_info("Number of LUNs=%d\n", common->nluns);
- /* Prepare inquiryString */
- i = get_default_bcdDevice();
- snprintf(common->inquiry_string, sizeof common->inquiry_string,
- "%-8s%-16s%04x", cfg->vendor_name ?: "Linux",
- /* Assume product name dependent on the first LUN */
- cfg->product_name ?: (common->luns->cdrom
- ? "File-CD Gadget"
- : "File-Stor Gadget"),
- i);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(fsg_common_set_nluns);
+
+void fsg_common_set_ops(struct fsg_common *common,
+ const struct fsg_operations *ops)
+{
+ common->ops = ops;
+}
+EXPORT_SYMBOL_GPL(fsg_common_set_ops);
+
+void fsg_common_free_buffers(struct fsg_common *common)
+{
+ _fsg_common_free_buffers(common->buffhds, common->fsg_num_buffers);
+ common->buffhds = NULL;
+}
+EXPORT_SYMBOL_GPL(fsg_common_free_buffers);
+
+int fsg_common_set_cdev(struct fsg_common *common,
+ struct usb_composite_dev *cdev, bool can_stall)
+{
+ struct usb_string *us;
+
+ common->gadget = cdev->gadget;
+ common->ep0 = cdev->gadget->ep0;
+ common->ep0req = cdev->req;
+ common->cdev = cdev;
+
+ us = usb_gstrings_attach(cdev, fsg_strings_array,
+ ARRAY_SIZE(fsg_strings));
+ if (IS_ERR(us))
+ return PTR_ERR(us);
+
+ fsg_intf_desc.iInterface = us[FSG_STRING_INTERFACE].id;
/*
* Some peripheral controllers are known not to be able to
* halt bulk endpoints correctly. If one of them is present,
* disable stalls.
*/
- common->can_stall = cfg->can_stall &&
- !(gadget_is_at91(common->gadget));
+ common->can_stall = can_stall && !(gadget_is_at91(common->gadget));
- spin_lock_init(&common->lock);
- kref_init(&common->ref);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(fsg_common_set_cdev);
- /* Tell the thread to start working */
- common->thread_task =
- kthread_create(fsg_main_thread, common, "file-storage");
- if (IS_ERR(common->thread_task)) {
- rc = PTR_ERR(common->thread_task);
- goto error_release;
+static inline int fsg_common_add_sysfs(struct fsg_common *common,
+ struct fsg_lun *lun)
+{
+ int rc;
+
+ rc = device_register(&lun->dev);
+ if (rc) {
+ put_device(&lun->dev);
+ return rc;
}
- init_completion(&common->thread_notifier);
- init_waitqueue_head(&common->fsg_wait);
- /* Information */
- INFO(common, FSG_DRIVER_DESC ", version: " FSG_DRIVER_VERSION "\n");
- INFO(common, "Number of LUNs=%d\n", common->nluns);
+ rc = device_create_file(&lun->dev,
+ lun->cdrom
+ ? &dev_attr_ro_cdrom
+ : &dev_attr_ro);
+ if (rc)
+ goto error;
+ rc = device_create_file(&lun->dev,
+ lun->removable
+ ? &dev_attr_file
+ : &dev_attr_file_nonremovable);
+ if (rc)
+ goto error;
+ rc = device_create_file(&lun->dev, &dev_attr_nofua);
+ if (rc)
+ goto error;
+
+ return 0;
+
+error:
+ /* removing nonexistent files is a no-op */
+ fsg_common_remove_sysfs(lun);
+ device_unregister(&lun->dev);
+ return rc;
+}
+
+int fsg_common_create_lun(struct fsg_common *common, struct fsg_lun_config *cfg,
+ unsigned int id, const char *name,
+ const char **name_pfx)
+{
+ struct fsg_lun *lun;
+ char *pathbuf, *p;
+ int rc = -ENOMEM;
+
+ if (!common->nluns || !common->luns)
+ return -ENODEV;
+
+ if (common->luns[id])
+ return -EBUSY;
+
+ if (!cfg->filename && !cfg->removable) {
+ pr_err("no file given for LUN%d\n", id);
+ return -EINVAL;
+ }
+
+ lun = kzalloc(sizeof(*lun), GFP_KERNEL);
+ if (!lun)
+ return -ENOMEM;
+
+ lun->name_pfx = name_pfx;
+
+ lun->cdrom = !!cfg->cdrom;
+ lun->ro = cfg->cdrom || cfg->ro;
+ lun->initially_ro = lun->ro;
+ lun->removable = !!cfg->removable;
+
+ if (!common->sysfs) {
+ /* we DON'T own the name!*/
+ lun->name = name;
+ } else {
+ lun->dev.release = fsg_lun_release;
+ lun->dev.parent = &common->gadget->dev;
+ dev_set_drvdata(&lun->dev, &common->filesem);
+ dev_set_name(&lun->dev, "%s", name);
+ lun->name = dev_name(&lun->dev);
+
+ rc = fsg_common_add_sysfs(common, lun);
+ if (rc) {
+ pr_info("failed to register LUN%d: %d\n", id, rc);
+ goto error_sysfs;
+ }
+ }
+
+ common->luns[id] = lun;
+
+ if (cfg->filename) {
+ rc = fsg_lun_open(lun, cfg->filename);
+ if (rc)
+ goto error_lun;
+ }
pathbuf = kmalloc(PATH_MAX, GFP_KERNEL);
- for (i = 0, nluns = common->nluns, curlun = common->luns;
- i < nluns;
- ++curlun, ++i) {
- char *p = "(no medium)";
- if (fsg_lun_is_open(curlun)) {
- p = "(error)";
- if (pathbuf) {
- p = d_path(&curlun->filp->f_path,
- pathbuf, PATH_MAX);
- if (IS_ERR(p))
- p = "(error)";
- }
+ p = "(no medium)";
+ if (fsg_lun_is_open(lun)) {
+ p = "(error)";
+ if (pathbuf) {
+ p = d_path(&lun->filp->f_path, pathbuf, PATH_MAX);
+ if (IS_ERR(p))
+ p = "(error)";
}
- LINFO(curlun, "LUN: %s%s%sfile: %s\n",
- curlun->removable ? "removable " : "",
- curlun->ro ? "read only " : "",
- curlun->cdrom ? "CD-ROM " : "",
- p);
}
+ pr_info("LUN: %s%s%sfile: %s\n",
+ lun->removable ? "removable " : "",
+ lun->ro ? "read only " : "",
+ lun->cdrom ? "CD-ROM " : "",
+ p);
kfree(pathbuf);
+ return 0;
+
+error_lun:
+ if (common->sysfs) {
+ fsg_common_remove_sysfs(lun);
+ device_unregister(&lun->dev);
+ }
+ fsg_lun_close(lun);
+ common->luns[id] = NULL;
+error_sysfs:
+ kfree(lun);
+ return rc;
+}
+EXPORT_SYMBOL_GPL(fsg_common_create_lun);
+
+int fsg_common_create_luns(struct fsg_common *common, struct fsg_config *cfg)
+{
+ char buf[8]; /* enough for 100000000 different numbers, decimal */
+ int i, rc;
+
+ for (i = 0; i < common->nluns; ++i) {
+ snprintf(buf, sizeof(buf), "lun%d", i);
+ rc = fsg_common_create_lun(common, &cfg->luns[i], i, buf, NULL);
+ if (rc)
+ goto fail;
+ }
+
+ pr_info("Number of LUNs=%d\n", common->nluns);
+
+ return 0;
+
+fail:
+ _fsg_common_remove_luns(common, i);
+ return rc;
+}
+EXPORT_SYMBOL_GPL(fsg_common_create_luns);
+
+void fsg_common_set_inquiry_string(struct fsg_common *common, const char *vn,
+ const char *pn)
+{
+ int i;
+
+ /* Prepare inquiryString */
+ i = get_default_bcdDevice();
+ snprintf(common->inquiry_string, sizeof(common->inquiry_string),
+ "%-8s%-16s%04x", vn ?: "Linux",
+ /* Assume product name dependent on the first LUN */
+ pn ?: ((*common->luns)->cdrom
+ ? "File-CD Gadget"
+ : "File-Stor Gadget"),
+ i);
+}
+EXPORT_SYMBOL_GPL(fsg_common_set_inquiry_string);
+
+int fsg_common_run_thread(struct fsg_common *common)
+{
+ common->state = FSG_STATE_IDLE;
+ /* Tell the thread to start working */
+ common->thread_task =
+ kthread_create(fsg_main_thread, common, "file-storage");
+ if (IS_ERR(common->thread_task)) {
+ common->state = FSG_STATE_TERMINATED;
+ return PTR_ERR(common->thread_task);
+ }
+
DBG(common, "I/O thread pid: %d\n", task_pid_nr(common->thread_task));
wake_up_process(common->thread_task);
- return common;
-
-error_luns:
- common->nluns = i + 1;
-error_release:
- common->state = FSG_STATE_TERMINATED; /* The thread is dead */
- /* Call fsg_common_release() directly, ref might be not initialised. */
- fsg_common_release(&common->ref);
- return ERR_PTR(rc);
+ return 0;
}
+EXPORT_SYMBOL_GPL(fsg_common_run_thread);
static void fsg_common_release(struct kref *ref)
{
@@ -2824,36 +3068,26 @@ static void fsg_common_release(struct kref *ref)
}
if (likely(common->luns)) {
- struct fsg_lun *lun = common->luns;
+ struct fsg_lun **lun_it = common->luns;
unsigned i = common->nluns;
/* In error recovery common->nluns may be zero. */
- for (; i; --i, ++lun) {
- device_remove_file(&lun->dev, &dev_attr_nofua);
- device_remove_file(&lun->dev,
- lun->cdrom
- ? &dev_attr_ro_cdrom
- : &dev_attr_ro);
- device_remove_file(&lun->dev,
- lun->removable
- ? &dev_attr_file
- : &dev_attr_file_nonremovable);
+ for (; i; --i, ++lun_it) {
+ struct fsg_lun *lun = *lun_it;
+ if (!lun)
+ continue;
+ if (common->sysfs)
+ fsg_common_remove_sysfs(lun);
fsg_lun_close(lun);
- device_unregister(&lun->dev);
+ if (common->sysfs)
+ device_unregister(&lun->dev);
+ kfree(lun);
}
kfree(common->luns);
}
- {
- struct fsg_buffhd *bh = common->buffhds;
- unsigned i = fsg_num_buffers;
- do {
- kfree(bh->buf);
- } while (++bh, --i);
- }
-
- kfree(common->buffhds);
+ _fsg_common_free_buffers(common->buffhds, common->fsg_num_buffers);
if (common->free_storage_on_release)
kfree(common);
}
@@ -2861,24 +3095,6 @@ static void fsg_common_release(struct kref *ref)
/*-------------------------------------------------------------------------*/
-static void fsg_unbind(struct usb_configuration *c, struct usb_function *f)
-{
- struct fsg_dev *fsg = fsg_from_func(f);
- struct fsg_common *common = fsg->common;
-
- DBG(fsg, "unbind\n");
- if (fsg->common->fsg == fsg) {
- fsg->common->new_fsg = NULL;
- raise_exception(fsg->common, FSG_STATE_CONFIG_CHANGE);
- /* FIXME: make interruptible or killable somehow? */
- wait_event(common->fsg_wait, common->fsg != fsg);
- }
-
- fsg_common_put(common);
- usb_free_all_descriptors(&fsg->function);
- kfree(fsg);
-}
-
static int fsg_bind(struct usb_configuration *c, struct usb_function *f)
{
struct fsg_dev *fsg = fsg_from_func(f);
@@ -2887,6 +3103,19 @@ static int fsg_bind(struct usb_configuration *c, struct usb_function *f)
struct usb_ep *ep;
unsigned max_burst;
int ret;
+ struct fsg_opts *opts;
+
+ opts = fsg_opts_from_func_inst(f->fi);
+ if (!opts->no_configfs) {
+ ret = fsg_common_set_cdev(fsg->common, c->cdev,
+ fsg->common->can_stall);
+ if (ret)
+ return ret;
+ fsg_common_set_inquiry_string(fsg->common, 0, 0);
+ ret = fsg_common_run_thread(fsg->common);
+ if (ret)
+ return ret;
+ }
fsg->gadget = gadget;
@@ -2939,95 +3168,472 @@ autoconf_fail:
return -ENOTSUPP;
}
-/****************************** ADD FUNCTION ******************************/
+/****************************** ALLOCATE FUNCTION *************************/
-static struct usb_gadget_strings *fsg_strings_array[] = {
- &fsg_stringtab,
+static void fsg_unbind(struct usb_configuration *c, struct usb_function *f)
+{
+ struct fsg_dev *fsg = fsg_from_func(f);
+ struct fsg_common *common = fsg->common;
+
+ DBG(fsg, "unbind\n");
+ if (fsg->common->fsg == fsg) {
+ fsg->common->new_fsg = NULL;
+ raise_exception(fsg->common, FSG_STATE_CONFIG_CHANGE);
+ /* FIXME: make interruptible or killable somehow? */
+ wait_event(common->fsg_wait, common->fsg != fsg);
+ }
+
+ usb_free_all_descriptors(&fsg->function);
+}
+
+static inline struct fsg_lun_opts *to_fsg_lun_opts(struct config_item *item)
+{
+ return container_of(to_config_group(item), struct fsg_lun_opts, group);
+}
+
+static inline struct fsg_opts *to_fsg_opts(struct config_item *item)
+{
+ return container_of(to_config_group(item), struct fsg_opts,
+ func_inst.group);
+}
+
+CONFIGFS_ATTR_STRUCT(fsg_lun_opts);
+CONFIGFS_ATTR_OPS(fsg_lun_opts);
+
+static void fsg_lun_attr_release(struct config_item *item)
+{
+ struct fsg_lun_opts *lun_opts;
+
+ lun_opts = to_fsg_lun_opts(item);
+ kfree(lun_opts);
+}
+
+static struct configfs_item_operations fsg_lun_item_ops = {
+ .release = fsg_lun_attr_release,
+ .show_attribute = fsg_lun_opts_attr_show,
+ .store_attribute = fsg_lun_opts_attr_store,
+};
+
+static ssize_t fsg_lun_opts_file_show(struct fsg_lun_opts *opts, char *page)
+{
+ struct fsg_opts *fsg_opts;
+
+ fsg_opts = to_fsg_opts(opts->group.cg_item.ci_parent);
+
+ return fsg_show_file(opts->lun, &fsg_opts->common->filesem, page);
+}
+
+static ssize_t fsg_lun_opts_file_store(struct fsg_lun_opts *opts,
+ const char *page, size_t len)
+{
+ struct fsg_opts *fsg_opts;
+
+ fsg_opts = to_fsg_opts(opts->group.cg_item.ci_parent);
+
+ return fsg_store_file(opts->lun, &fsg_opts->common->filesem, page, len);
+}
+
+static struct fsg_lun_opts_attribute fsg_lun_opts_file =
+ __CONFIGFS_ATTR(file, S_IRUGO | S_IWUSR, fsg_lun_opts_file_show,
+ fsg_lun_opts_file_store);
+
+static ssize_t fsg_lun_opts_ro_show(struct fsg_lun_opts *opts, char *page)
+{
+ return fsg_show_ro(opts->lun, page);
+}
+
+static ssize_t fsg_lun_opts_ro_store(struct fsg_lun_opts *opts,
+ const char *page, size_t len)
+{
+ struct fsg_opts *fsg_opts;
+
+ fsg_opts = to_fsg_opts(opts->group.cg_item.ci_parent);
+
+ return fsg_store_ro(opts->lun, &fsg_opts->common->filesem, page, len);
+}
+
+static struct fsg_lun_opts_attribute fsg_lun_opts_ro =
+ __CONFIGFS_ATTR(ro, S_IRUGO | S_IWUSR, fsg_lun_opts_ro_show,
+ fsg_lun_opts_ro_store);
+
+static ssize_t fsg_lun_opts_removable_show(struct fsg_lun_opts *opts,
+ char *page)
+{
+ return fsg_show_removable(opts->lun, page);
+}
+
+static ssize_t fsg_lun_opts_removable_store(struct fsg_lun_opts *opts,
+ const char *page, size_t len)
+{
+ return fsg_store_removable(opts->lun, page, len);
+}
+
+static struct fsg_lun_opts_attribute fsg_lun_opts_removable =
+ __CONFIGFS_ATTR(removable, S_IRUGO | S_IWUSR,
+ fsg_lun_opts_removable_show,
+ fsg_lun_opts_removable_store);
+
+static ssize_t fsg_lun_opts_cdrom_show(struct fsg_lun_opts *opts, char *page)
+{
+ return fsg_show_cdrom(opts->lun, page);
+}
+
+static ssize_t fsg_lun_opts_cdrom_store(struct fsg_lun_opts *opts,
+ const char *page, size_t len)
+{
+ struct fsg_opts *fsg_opts;
+
+ fsg_opts = to_fsg_opts(opts->group.cg_item.ci_parent);
+
+ return fsg_store_cdrom(opts->lun, &fsg_opts->common->filesem, page,
+ len);
+}
+
+static struct fsg_lun_opts_attribute fsg_lun_opts_cdrom =
+ __CONFIGFS_ATTR(cdrom, S_IRUGO | S_IWUSR, fsg_lun_opts_cdrom_show,
+ fsg_lun_opts_cdrom_store);
+
+static ssize_t fsg_lun_opts_nofua_show(struct fsg_lun_opts *opts, char *page)
+{
+ return fsg_show_nofua(opts->lun, page);
+}
+
+static ssize_t fsg_lun_opts_nofua_store(struct fsg_lun_opts *opts,
+ const char *page, size_t len)
+{
+ return fsg_store_nofua(opts->lun, page, len);
+}
+
+static struct fsg_lun_opts_attribute fsg_lun_opts_nofua =
+ __CONFIGFS_ATTR(nofua, S_IRUGO | S_IWUSR, fsg_lun_opts_nofua_show,
+ fsg_lun_opts_nofua_store);
+
+static struct configfs_attribute *fsg_lun_attrs[] = {
+ &fsg_lun_opts_file.attr,
+ &fsg_lun_opts_ro.attr,
+ &fsg_lun_opts_removable.attr,
+ &fsg_lun_opts_cdrom.attr,
+ &fsg_lun_opts_nofua.attr,
NULL,
};
-static int fsg_bind_config(struct usb_composite_dev *cdev,
- struct usb_configuration *c,
- struct fsg_common *common)
+static struct config_item_type fsg_lun_type = {
+ .ct_item_ops = &fsg_lun_item_ops,
+ .ct_attrs = fsg_lun_attrs,
+ .ct_owner = THIS_MODULE,
+};
+
+static struct config_group *fsg_lun_make(struct config_group *group,
+ const char *name)
{
- struct fsg_dev *fsg;
+ struct fsg_lun_opts *opts;
+ struct fsg_opts *fsg_opts;
+ struct fsg_lun_config config;
+ char *num_str;
+ u8 num;
+ int ret;
+
+ num_str = strchr(name, '.');
+ if (!num_str) {
+ pr_err("Unable to locate . in LUN.NUMBER\n");
+ return ERR_PTR(-EINVAL);
+ }
+ num_str++;
+
+ ret = kstrtou8(num_str, 0, &num);
+ if (ret)
+ return ERR_PTR(ret);
+
+ fsg_opts = to_fsg_opts(&group->cg_item);
+ if (num >= FSG_MAX_LUNS)
+ return ERR_PTR(-ERANGE);
+
+ mutex_lock(&fsg_opts->lock);
+ if (fsg_opts->refcnt || fsg_opts->common->luns[num]) {
+ ret = -EBUSY;
+ goto out;
+ }
+
+ opts = kzalloc(sizeof(*opts), GFP_KERNEL);
+ if (!opts) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ memset(&config, 0, sizeof(config));
+ config.removable = true;
+
+ ret = fsg_common_create_lun(fsg_opts->common, &config, num, name,
+ (const char **)&group->cg_item.ci_name);
+ if (ret) {
+ kfree(opts);
+ goto out;
+ }
+ opts->lun = fsg_opts->common->luns[num];
+ opts->lun_id = num;
+ mutex_unlock(&fsg_opts->lock);
+
+ config_group_init_type_name(&opts->group, name, &fsg_lun_type);
+
+ return &opts->group;
+out:
+ mutex_unlock(&fsg_opts->lock);
+ return ERR_PTR(ret);
+}
+
+static void fsg_lun_drop(struct config_group *group, struct config_item *item)
+{
+ struct fsg_lun_opts *lun_opts;
+ struct fsg_opts *fsg_opts;
+
+ lun_opts = to_fsg_lun_opts(item);
+ fsg_opts = to_fsg_opts(&group->cg_item);
+
+ mutex_lock(&fsg_opts->lock);
+ if (fsg_opts->refcnt) {
+ struct config_item *gadget;
+
+ gadget = group->cg_item.ci_parent->ci_parent;
+ unregister_gadget_item(gadget);
+ }
+
+ fsg_common_remove_lun(lun_opts->lun, fsg_opts->common->sysfs);
+ fsg_opts->common->luns[lun_opts->lun_id] = NULL;
+ lun_opts->lun_id = 0;
+ mutex_unlock(&fsg_opts->lock);
+
+ config_item_put(item);
+}
+
+CONFIGFS_ATTR_STRUCT(fsg_opts);
+CONFIGFS_ATTR_OPS(fsg_opts);
+
+static void fsg_attr_release(struct config_item *item)
+{
+ struct fsg_opts *opts = to_fsg_opts(item);
+
+ usb_put_function_instance(&opts->func_inst);
+}
+
+static struct configfs_item_operations fsg_item_ops = {
+ .release = fsg_attr_release,
+ .show_attribute = fsg_opts_attr_show,
+ .store_attribute = fsg_opts_attr_store,
+};
+
+static ssize_t fsg_opts_stall_show(struct fsg_opts *opts, char *page)
+{
+ int result;
+
+ mutex_lock(&opts->lock);
+ result = sprintf(page, "%d", opts->common->can_stall);
+ mutex_unlock(&opts->lock);
+
+ return result;
+}
+
+static ssize_t fsg_opts_stall_store(struct fsg_opts *opts, const char *page,
+ size_t len)
+{
+ int ret;
+ bool stall;
+
+ mutex_lock(&opts->lock);
+
+ if (opts->refcnt) {
+ mutex_unlock(&opts->lock);
+ return -EBUSY;
+ }
+
+ ret = strtobool(page, &stall);
+ if (!ret) {
+ opts->common->can_stall = stall;
+ ret = len;
+ }
+
+ mutex_unlock(&opts->lock);
+
+ return ret;
+}
+
+static struct fsg_opts_attribute fsg_opts_stall =
+ __CONFIGFS_ATTR(stall, S_IRUGO | S_IWUSR, fsg_opts_stall_show,
+ fsg_opts_stall_store);
+
+#ifdef CONFIG_USB_GADGET_DEBUG_FILES
+static ssize_t fsg_opts_num_buffers_show(struct fsg_opts *opts, char *page)
+{
+ int result;
+
+ mutex_lock(&opts->lock);
+ result = sprintf(page, "%d", opts->common->fsg_num_buffers);
+ mutex_unlock(&opts->lock);
+
+ return result;
+}
+
+static ssize_t fsg_opts_num_buffers_store(struct fsg_opts *opts,
+ const char *page, size_t len)
+{
+ int ret;
+ u8 num;
+
+ mutex_lock(&opts->lock);
+ if (opts->refcnt) {
+ ret = -EBUSY;
+ goto end;
+ }
+ ret = kstrtou8(page, 0, &num);
+ if (ret)
+ goto end;
+
+ ret = fsg_num_buffers_validate(num);
+ if (ret)
+ goto end;
+
+ fsg_common_set_num_buffers(opts->common, num);
+ ret = len;
+
+end:
+ mutex_unlock(&opts->lock);
+ return ret;
+}
+
+static struct fsg_opts_attribute fsg_opts_num_buffers =
+ __CONFIGFS_ATTR(num_buffers, S_IRUGO | S_IWUSR,
+ fsg_opts_num_buffers_show,
+ fsg_opts_num_buffers_store);
+
+#endif
+
+static struct configfs_attribute *fsg_attrs[] = {
+ &fsg_opts_stall.attr,
+#ifdef CONFIG_USB_GADGET_DEBUG_FILES
+ &fsg_opts_num_buffers.attr,
+#endif
+ NULL,
+};
+
+static struct configfs_group_operations fsg_group_ops = {
+ .make_group = fsg_lun_make,
+ .drop_item = fsg_lun_drop,
+};
+
+static struct config_item_type fsg_func_type = {
+ .ct_item_ops = &fsg_item_ops,
+ .ct_group_ops = &fsg_group_ops,
+ .ct_attrs = fsg_attrs,
+ .ct_owner = THIS_MODULE,
+};
+
+static void fsg_free_inst(struct usb_function_instance *fi)
+{
+ struct fsg_opts *opts;
+
+ opts = fsg_opts_from_func_inst(fi);
+ fsg_common_put(opts->common);
+ kfree(opts);
+}
+
+static struct usb_function_instance *fsg_alloc_inst(void)
+{
+ struct fsg_opts *opts;
+ struct fsg_lun_config config;
int rc;
- fsg = kzalloc(sizeof *fsg, GFP_KERNEL);
+ opts = kzalloc(sizeof(*opts), GFP_KERNEL);
+ if (!opts)
+ return ERR_PTR(-ENOMEM);
+ mutex_init(&opts->lock);
+ opts->func_inst.free_func_inst = fsg_free_inst;
+ opts->common = fsg_common_setup(opts->common);
+ if (IS_ERR(opts->common)) {
+ rc = PTR_ERR(opts->common);
+ goto release_opts;
+ }
+ rc = fsg_common_set_nluns(opts->common, FSG_MAX_LUNS);
+ if (rc)
+ goto release_opts;
+
+ rc = fsg_common_set_num_buffers(opts->common,
+ CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS);
+ if (rc)
+ goto release_luns;
+
+ pr_info(FSG_DRIVER_DESC ", version: " FSG_DRIVER_VERSION "\n");
+
+ memset(&config, 0, sizeof(config));
+ config.removable = true;
+ rc = fsg_common_create_lun(opts->common, &config, 0, "lun.0",
+ (const char **)&opts->func_inst.group.cg_item.ci_name);
+ opts->lun0.lun = opts->common->luns[0];
+ opts->lun0.lun_id = 0;
+ config_group_init_type_name(&opts->lun0.group, "lun.0", &fsg_lun_type);
+ opts->default_groups[0] = &opts->lun0.group;
+ opts->func_inst.group.default_groups = opts->default_groups;
+
+ config_group_init_type_name(&opts->func_inst.group, "", &fsg_func_type);
+
+ return &opts->func_inst;
+
+release_luns:
+ kfree(opts->common->luns);
+release_opts:
+ kfree(opts);
+ return ERR_PTR(rc);
+}
+
+static void fsg_free(struct usb_function *f)
+{
+ struct fsg_dev *fsg;
+ struct fsg_opts *opts;
+
+ fsg = container_of(f, struct fsg_dev, function);
+ opts = container_of(f->fi, struct fsg_opts, func_inst);
+
+ mutex_lock(&opts->lock);
+ opts->refcnt--;
+ mutex_unlock(&opts->lock);
+
+ kfree(fsg);
+}
+
+static struct usb_function *fsg_alloc(struct usb_function_instance *fi)
+{
+ struct fsg_opts *opts = fsg_opts_from_func_inst(fi);
+ struct fsg_common *common = opts->common;
+ struct fsg_dev *fsg;
+
+ fsg = kzalloc(sizeof(*fsg), GFP_KERNEL);
if (unlikely(!fsg))
- return -ENOMEM;
+ return ERR_PTR(-ENOMEM);
- fsg->function.name = FSG_DRIVER_DESC;
- fsg->function.strings = fsg_strings_array;
- fsg->function.bind = fsg_bind;
- fsg->function.unbind = fsg_unbind;
- fsg->function.setup = fsg_setup;
- fsg->function.set_alt = fsg_set_alt;
- fsg->function.disable = fsg_disable;
+ mutex_lock(&opts->lock);
+ opts->refcnt++;
+ mutex_unlock(&opts->lock);
+ fsg->function.name = FSG_DRIVER_DESC;
+ fsg->function.bind = fsg_bind;
+ fsg->function.unbind = fsg_unbind;
+ fsg->function.setup = fsg_setup;
+ fsg->function.set_alt = fsg_set_alt;
+ fsg->function.disable = fsg_disable;
+ fsg->function.free_func = fsg_free;
fsg->common = common;
- /*
- * Our caller holds a reference to common structure so we
- * don't have to be worry about it being freed until we return
- * from this function. So instead of incrementing counter now
- * and decrement in error recovery we increment it only when
- * call to usb_add_function() was successful.
- */
- rc = usb_add_function(c, &fsg->function);
- if (unlikely(rc))
- kfree(fsg);
- else
- fsg_common_get(fsg->common);
- return rc;
+ return &fsg->function;
}
+DECLARE_USB_FUNCTION_INIT(mass_storage, fsg_alloc_inst, fsg_alloc);
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Michal Nazarewicz");
/************************* Module parameters *************************/
-struct fsg_module_parameters {
- char *file[FSG_MAX_LUNS];
- bool ro[FSG_MAX_LUNS];
- bool removable[FSG_MAX_LUNS];
- bool cdrom[FSG_MAX_LUNS];
- bool nofua[FSG_MAX_LUNS];
-
- unsigned int file_count, ro_count, removable_count, cdrom_count;
- unsigned int nofua_count;
- unsigned int luns; /* nluns */
- bool stall; /* can_stall */
-};
-#define _FSG_MODULE_PARAM_ARRAY(prefix, params, name, type, desc) \
- module_param_array_named(prefix ## name, params.name, type, \
- &prefix ## params.name ## _count, \
- S_IRUGO); \
- MODULE_PARM_DESC(prefix ## name, desc)
-
-#define _FSG_MODULE_PARAM(prefix, params, name, type, desc) \
- module_param_named(prefix ## name, params.name, type, \
- S_IRUGO); \
- MODULE_PARM_DESC(prefix ## name, desc)
-
-#define FSG_MODULE_PARAMETERS(prefix, params) \
- _FSG_MODULE_PARAM_ARRAY(prefix, params, file, charp, \
- "names of backing files or devices"); \
- _FSG_MODULE_PARAM_ARRAY(prefix, params, ro, bool, \
- "true to force read-only"); \
- _FSG_MODULE_PARAM_ARRAY(prefix, params, removable, bool, \
- "true to simulate removable media"); \
- _FSG_MODULE_PARAM_ARRAY(prefix, params, cdrom, bool, \
- "true to simulate CD-ROM instead of disk"); \
- _FSG_MODULE_PARAM_ARRAY(prefix, params, nofua, bool, \
- "true to ignore SCSI WRITE(10,12) FUA bit"); \
- _FSG_MODULE_PARAM(prefix, params, luns, uint, \
- "number of LUNs"); \
- _FSG_MODULE_PARAM(prefix, params, stall, bool, \
- "false to prevent bulk stalls")
-
-static void
-fsg_config_from_params(struct fsg_config *cfg,
- const struct fsg_module_parameters *params)
+void fsg_config_from_params(struct fsg_config *cfg,
+ const struct fsg_module_parameters *params,
+ unsigned int fsg_num_buffers)
{
struct fsg_lun_config *lun;
unsigned i;
@@ -3055,19 +3661,7 @@ fsg_config_from_params(struct fsg_config *cfg,
/* Finalise */
cfg->can_stall = params->stall;
+ cfg->fsg_num_buffers = fsg_num_buffers;
}
+EXPORT_SYMBOL_GPL(fsg_config_from_params);
-static inline struct fsg_common *
-fsg_common_from_params(struct fsg_common *common,
- struct usb_composite_dev *cdev,
- const struct fsg_module_parameters *params)
- __attribute__((unused));
-static inline struct fsg_common *
-fsg_common_from_params(struct fsg_common *common,
- struct usb_composite_dev *cdev,
- const struct fsg_module_parameters *params)
-{
- struct fsg_config cfg;
- fsg_config_from_params(&cfg, params);
- return fsg_common_init(common, cdev, &cfg);
-}
diff --git a/drivers/usb/gadget/f_mass_storage.h b/drivers/usb/gadget/f_mass_storage.h
new file mode 100644
index 000000000000..b4866fcef30b
--- /dev/null
+++ b/drivers/usb/gadget/f_mass_storage.h
@@ -0,0 +1,166 @@
+#ifndef USB_F_MASS_STORAGE_H
+#define USB_F_MASS_STORAGE_H
+
+#include <linux/usb/composite.h>
+#include "storage_common.h"
+
+struct fsg_module_parameters {
+ char *file[FSG_MAX_LUNS];
+ bool ro[FSG_MAX_LUNS];
+ bool removable[FSG_MAX_LUNS];
+ bool cdrom[FSG_MAX_LUNS];
+ bool nofua[FSG_MAX_LUNS];
+
+ unsigned int file_count, ro_count, removable_count, cdrom_count;
+ unsigned int nofua_count;
+ unsigned int luns; /* nluns */
+ bool stall; /* can_stall */
+};
+
+#define _FSG_MODULE_PARAM_ARRAY(prefix, params, name, type, desc) \
+ module_param_array_named(prefix ## name, params.name, type, \
+ &prefix ## params.name ## _count, \
+ S_IRUGO); \
+ MODULE_PARM_DESC(prefix ## name, desc)
+
+#define _FSG_MODULE_PARAM(prefix, params, name, type, desc) \
+ module_param_named(prefix ## name, params.name, type, \
+ S_IRUGO); \
+ MODULE_PARM_DESC(prefix ## name, desc)
+
+#define __FSG_MODULE_PARAMETERS(prefix, params) \
+ _FSG_MODULE_PARAM_ARRAY(prefix, params, file, charp, \
+ "names of backing files or devices"); \
+ _FSG_MODULE_PARAM_ARRAY(prefix, params, ro, bool, \
+ "true to force read-only"); \
+ _FSG_MODULE_PARAM_ARRAY(prefix, params, removable, bool, \
+ "true to simulate removable media"); \
+ _FSG_MODULE_PARAM_ARRAY(prefix, params, cdrom, bool, \
+ "true to simulate CD-ROM instead of disk"); \
+ _FSG_MODULE_PARAM_ARRAY(prefix, params, nofua, bool, \
+ "true to ignore SCSI WRITE(10,12) FUA bit"); \
+ _FSG_MODULE_PARAM(prefix, params, luns, uint, \
+ "number of LUNs"); \
+ _FSG_MODULE_PARAM(prefix, params, stall, bool, \
+ "false to prevent bulk stalls")
+
+#ifdef CONFIG_USB_GADGET_DEBUG_FILES
+
+#define FSG_MODULE_PARAMETERS(prefix, params) \
+ __FSG_MODULE_PARAMETERS(prefix, params); \
+ module_param_named(num_buffers, fsg_num_buffers, uint, S_IRUGO);\
+ MODULE_PARM_DESC(num_buffers, "Number of pipeline buffers")
+#else
+
+#define FSG_MODULE_PARAMETERS(prefix, params) \
+ __FSG_MODULE_PARAMETERS(prefix, params)
+
+#endif
+
+struct fsg_common;
+
+/* FSF callback functions */
+struct fsg_operations {
+ /*
+ * Callback function to call when thread exits. If no
+ * callback is set or it returns value lower then zero MSF
+ * will force eject all LUNs it operates on (including those
+ * marked as non-removable or with prevent_medium_removal flag
+ * set).
+ */
+ int (*thread_exits)(struct fsg_common *common);
+};
+
+struct fsg_lun_opts {
+ struct config_group group;
+ struct fsg_lun *lun;
+ int lun_id;
+};
+
+struct fsg_opts {
+ struct fsg_common *common;
+ struct usb_function_instance func_inst;
+ struct fsg_lun_opts lun0;
+ struct config_group *default_groups[2];
+ bool no_configfs; /* for legacy gadgets */
+
+ /*
+ * Read/write access to configfs attributes is handled by configfs.
+ *
+ * This is to protect the data from concurrent access by read/write
+ * and create symlink/remove symlink.
+ */
+ struct mutex lock;
+ int refcnt;
+};
+
+struct fsg_lun_config {
+ const char *filename;
+ char ro;
+ char removable;
+ char cdrom;
+ char nofua;
+};
+
+struct fsg_config {
+ unsigned nluns;
+ struct fsg_lun_config luns[FSG_MAX_LUNS];
+
+ /* Callback functions. */
+ const struct fsg_operations *ops;
+ /* Gadget's private data. */
+ void *private_data;
+
+ const char *vendor_name; /* 8 characters or less */
+ const char *product_name; /* 16 characters or less */
+
+ char can_stall;
+ unsigned int fsg_num_buffers;
+};
+
+static inline struct fsg_opts *
+fsg_opts_from_func_inst(const struct usb_function_instance *fi)
+{
+ return container_of(fi, struct fsg_opts, func_inst);
+}
+
+void fsg_common_get(struct fsg_common *common);
+
+void fsg_common_put(struct fsg_common *common);
+
+void fsg_common_set_sysfs(struct fsg_common *common, bool sysfs);
+
+int fsg_common_set_num_buffers(struct fsg_common *common, unsigned int n);
+
+void fsg_common_free_buffers(struct fsg_common *common);
+
+int fsg_common_set_cdev(struct fsg_common *common,
+ struct usb_composite_dev *cdev, bool can_stall);
+
+void fsg_common_remove_lun(struct fsg_lun *lun, bool sysfs);
+
+void fsg_common_remove_luns(struct fsg_common *common);
+
+void fsg_common_free_luns(struct fsg_common *common);
+
+int fsg_common_set_nluns(struct fsg_common *common, int nluns);
+
+void fsg_common_set_ops(struct fsg_common *common,
+ const struct fsg_operations *ops);
+
+int fsg_common_create_lun(struct fsg_common *common, struct fsg_lun_config *cfg,
+ unsigned int id, const char *name,
+ const char **name_pfx);
+
+int fsg_common_create_luns(struct fsg_common *common, struct fsg_config *cfg);
+
+void fsg_common_set_inquiry_string(struct fsg_common *common, const char *vn,
+ const char *pn);
+
+int fsg_common_run_thread(struct fsg_common *common);
+
+void fsg_config_from_params(struct fsg_config *cfg,
+ const struct fsg_module_parameters *params,
+ unsigned int fsg_num_buffers);
+
+#endif /* USB_F_MASS_STORAGE_H */
diff --git a/drivers/usb/gadget/g_ffs.c b/drivers/usb/gadget/g_ffs.c
index 5327c82472ed..2344efe4f4ce 100644
--- a/drivers/usb/gadget/g_ffs.c
+++ b/drivers/usb/gadget/g_ffs.c
@@ -76,7 +76,9 @@ struct gfs_ffs_obj {
USB_GADGET_COMPOSITE_OPTIONS();
+#if defined CONFIG_USB_FUNCTIONFS_ETH || defined CONFIG_USB_FUNCTIONFS_RNDIS
USB_ETHERNET_MODULE_PARAMETERS();
+#endif
static struct usb_device_descriptor gfs_dev_desc = {
.bLength = sizeof gfs_dev_desc,
diff --git a/drivers/usb/gadget/goku_udc.c b/drivers/usb/gadget/goku_udc.c
index c64deb9e3d62..f82768015715 100644
--- a/drivers/usb/gadget/goku_udc.c
+++ b/drivers/usb/gadget/goku_udc.c
@@ -1165,7 +1165,7 @@ static int udc_proc_read(struct seq_file *m, void *v)
s = "invalid"; break;
default:
s = "?"; break;
- }; s; }),
+ } s; }),
(tmp & EPxSTATUS_TOGGLE) ? "data1" : "data0",
(tmp & EPxSTATUS_SUSPEND) ? " suspend" : "",
(tmp & EPxSTATUS_FIFO_DISABLE) ? " disable" : "",
@@ -1701,7 +1701,6 @@ static void goku_remove(struct pci_dev *pdev)
if (dev->enabled)
pci_disable_device(pdev);
- pci_set_drvdata(pdev, NULL);
dev->regs = NULL;
INFO(dev, "unbind\n");
diff --git a/drivers/usb/gadget/mass_storage.c b/drivers/usb/gadget/mass_storage.c
index 080e577773d5..8e27a8c96444 100644
--- a/drivers/usb/gadget/mass_storage.c
+++ b/drivers/usb/gadget/mass_storage.c
@@ -37,16 +37,16 @@
#define DRIVER_DESC "Mass Storage Gadget"
#define DRIVER_VERSION "2009/09/11"
-/*-------------------------------------------------------------------------*/
-
/*
- * kbuild is not very cooperative with respect to linking separately
- * compiled library objects into one module. So for now we won't use
- * separate compilation ... ensuring init/exit sections work to shrink
- * the runtime footprint, and giving us at least some parts of what
- * a "gcc --combine ... part1.c part2.c part3.c ... " build would.
+ * Thanks to NetChip Technologies for donating this product ID.
+ *
+ * DO NOT REUSE THESE IDs with any other driver!! Ever!!
+ * Instead: allocate your own, using normal USB-IF procedures.
*/
-#include "f_mass_storage.c"
+#define FSG_VENDOR_ID 0x0525 /* NetChip */
+#define FSG_PRODUCT_ID 0xa4a5 /* Linux-USB File-backed Storage Gadget */
+
+#include "f_mass_storage.h"
/*-------------------------------------------------------------------------*/
USB_GADGET_COMPOSITE_OPTIONS();
@@ -97,11 +97,28 @@ static struct usb_gadget_strings *dev_strings[] = {
NULL,
};
+static struct usb_function_instance *fi_msg;
+static struct usb_function *f_msg;
+
/****************************** Configurations ******************************/
static struct fsg_module_parameters mod_data = {
.stall = 1
};
+#ifdef CONFIG_USB_GADGET_DEBUG_FILES
+
+static unsigned int fsg_num_buffers = CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS;
+
+#else
+
+/*
+ * Number of buffers we will use.
+ * 2 is usually enough for good buffering pipeline
+ */
+#define fsg_num_buffers CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS
+
+#endif /* CONFIG_USB_GADGET_DEBUG_FILES */
+
FSG_MODULE_PARAMETERS(/* no prefix */, mod_data);
static unsigned long msg_registered;
@@ -115,13 +132,7 @@ static int msg_thread_exits(struct fsg_common *common)
static int __init msg_do_config(struct usb_configuration *c)
{
- static const struct fsg_operations ops = {
- .thread_exits = msg_thread_exits,
- };
- static struct fsg_common common;
-
- struct fsg_common *retp;
- struct fsg_config config;
+ struct fsg_opts *opts;
int ret;
if (gadget_is_otg(c->cdev->gadget)) {
@@ -129,15 +140,24 @@ static int __init msg_do_config(struct usb_configuration *c)
c->bmAttributes |= USB_CONFIG_ATT_WAKEUP;
}
- fsg_config_from_params(&config, &mod_data);
- config.ops = &ops;
+ opts = fsg_opts_from_func_inst(fi_msg);
+
+ f_msg = usb_get_function(fi_msg);
+ if (IS_ERR(f_msg))
+ return PTR_ERR(f_msg);
+
+ ret = fsg_common_run_thread(opts->common);
+ if (ret)
+ goto put_func;
+
+ ret = usb_add_function(c, f_msg);
+ if (ret)
+ goto put_func;
- retp = fsg_common_init(&common, c->cdev, &config);
- if (IS_ERR(retp))
- return PTR_ERR(retp);
+ return 0;
- ret = fsg_bind_config(c->cdev, c, &common);
- fsg_common_put(&common);
+put_func:
+ usb_put_function(f_msg);
return ret;
}
@@ -152,23 +172,79 @@ static struct usb_configuration msg_config_driver = {
static int __init msg_bind(struct usb_composite_dev *cdev)
{
+ static const struct fsg_operations ops = {
+ .thread_exits = msg_thread_exits,
+ };
+ struct fsg_opts *opts;
+ struct fsg_config config;
int status;
+ fi_msg = usb_get_function_instance("mass_storage");
+ if (IS_ERR(fi_msg))
+ return PTR_ERR(fi_msg);
+
+ fsg_config_from_params(&config, &mod_data, fsg_num_buffers);
+ opts = fsg_opts_from_func_inst(fi_msg);
+
+ opts->no_configfs = true;
+ status = fsg_common_set_num_buffers(opts->common, fsg_num_buffers);
+ if (status)
+ goto fail;
+
+ status = fsg_common_set_nluns(opts->common, config.nluns);
+ if (status)
+ goto fail_set_nluns;
+
+ fsg_common_set_ops(opts->common, &ops);
+
+ status = fsg_common_set_cdev(opts->common, cdev, config.can_stall);
+ if (status)
+ goto fail_set_cdev;
+
+ fsg_common_set_sysfs(opts->common, true);
+ status = fsg_common_create_luns(opts->common, &config);
+ if (status)
+ goto fail_set_cdev;
+
+ fsg_common_set_inquiry_string(opts->common, config.vendor_name,
+ config.product_name);
+
status = usb_string_ids_tab(cdev, strings_dev);
if (status < 0)
- return status;
+ goto fail_string_ids;
msg_device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id;
status = usb_add_config(cdev, &msg_config_driver, msg_do_config);
if (status < 0)
- return status;
+ goto fail_string_ids;
+
usb_composite_overwrite_options(cdev, &coverwrite);
dev_info(&cdev->gadget->dev,
DRIVER_DESC ", version: " DRIVER_VERSION "\n");
set_bit(0, &msg_registered);
return 0;
+
+fail_string_ids:
+ fsg_common_remove_luns(opts->common);
+fail_set_cdev:
+ fsg_common_free_luns(opts->common);
+fail_set_nluns:
+ fsg_common_free_buffers(opts->common);
+fail:
+ usb_put_function_instance(fi_msg);
+ return status;
}
+static int msg_unbind(struct usb_composite_dev *cdev)
+{
+ if (!IS_ERR(f_msg))
+ usb_put_function(f_msg);
+
+ if (!IS_ERR(fi_msg))
+ usb_put_function_instance(fi_msg);
+
+ return 0;
+}
/****************************** Some noise ******************************/
@@ -179,6 +255,7 @@ static __refdata struct usb_composite_driver msg_driver = {
.needs_serial = 1,
.strings = dev_strings,
.bind = msg_bind,
+ .unbind = msg_unbind,
};
MODULE_DESCRIPTION(DRIVER_DESC);
diff --git a/drivers/usb/gadget/multi.c b/drivers/usb/gadget/multi.c
index 23393254a8a3..4fdaa54a2a2a 100644
--- a/drivers/usb/gadget/multi.c
+++ b/drivers/usb/gadget/multi.c
@@ -15,6 +15,7 @@
#include <linux/kernel.h>
#include <linux/module.h>
+#include <linux/netdevice.h>
#include "u_serial.h"
#if defined USB_ETH_RNDIS
@@ -32,22 +33,11 @@ MODULE_AUTHOR("Michal Nazarewicz");
MODULE_LICENSE("GPL");
-/***************************** All the files... *****************************/
+#include "f_mass_storage.h"
-/*
- * kbuild is not very cooperative with respect to linking separately
- * compiled library objects into one module. So for now we won't use
- * separate compilation ... ensuring init/exit sections work to shrink
- * the runtime footprint, and giving us at least some parts of what
- * a "gcc --combine ... part1.c part2.c part3.c ... " build would.
- */
-#include "f_mass_storage.c"
-
-#define USBF_ECM_INCLUDED
-#include "f_ecm.c"
+#include "u_ecm.h"
#ifdef USB_ETH_RNDIS
-# define USB_FRNDIS_INCLUDED
-# include "f_rndis.c"
+# include "u_rndis.h"
# include "rndis.h"
#endif
#include "u_ether.h"
@@ -132,22 +122,36 @@ static struct usb_gadget_strings *dev_strings[] = {
/****************************** Configurations ******************************/
static struct fsg_module_parameters fsg_mod_data = { .stall = 1 };
-FSG_MODULE_PARAMETERS(/* no prefix */, fsg_mod_data);
+#ifdef CONFIG_USB_GADGET_DEBUG_FILES
+
+static unsigned int fsg_num_buffers = CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS;
-static struct fsg_common fsg_common;
+#else
+
+/*
+ * Number of buffers we will use.
+ * 2 is usually enough for good buffering pipeline
+ */
+#define fsg_num_buffers CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS
-static u8 host_mac[ETH_ALEN];
+#endif /* CONFIG_USB_DEBUG */
+
+FSG_MODULE_PARAMETERS(/* no prefix */, fsg_mod_data);
static struct usb_function_instance *fi_acm;
-static struct eth_dev *the_dev;
+static struct usb_function_instance *fi_msg;
/********** RNDIS **********/
#ifdef USB_ETH_RNDIS
+static struct usb_function_instance *fi_rndis;
static struct usb_function *f_acm_rndis;
+static struct usb_function *f_rndis;
+static struct usb_function *f_msg_rndis;
static __init int rndis_do_config(struct usb_configuration *c)
{
+ struct fsg_opts *fsg_opts;
int ret;
if (gadget_is_otg(c->cdev->gadget)) {
@@ -155,27 +159,50 @@ static __init int rndis_do_config(struct usb_configuration *c)
c->bmAttributes |= USB_CONFIG_ATT_WAKEUP;
}
- ret = rndis_bind_config(c, host_mac, the_dev);
+ f_rndis = usb_get_function(fi_rndis);
+ if (IS_ERR(f_rndis))
+ return PTR_ERR(f_rndis);
+
+ ret = usb_add_function(c, f_rndis);
if (ret < 0)
- return ret;
+ goto err_func_rndis;
f_acm_rndis = usb_get_function(fi_acm);
- if (IS_ERR(f_acm_rndis))
- return PTR_ERR(f_acm_rndis);
+ if (IS_ERR(f_acm_rndis)) {
+ ret = PTR_ERR(f_acm_rndis);
+ goto err_func_acm;
+ }
ret = usb_add_function(c, f_acm_rndis);
if (ret)
goto err_conf;
- ret = fsg_bind_config(c->cdev, c, &fsg_common);
- if (ret < 0)
+ f_msg_rndis = usb_get_function(fi_msg);
+ if (IS_ERR(f_msg_rndis)) {
+ ret = PTR_ERR(f_msg_rndis);
goto err_fsg;
+ }
+
+ fsg_opts = fsg_opts_from_func_inst(fi_msg);
+ ret = fsg_common_run_thread(fsg_opts->common);
+ if (ret)
+ goto err_run;
+
+ ret = usb_add_function(c, f_msg_rndis);
+ if (ret)
+ goto err_run;
return 0;
+err_run:
+ usb_put_function(f_msg_rndis);
err_fsg:
usb_remove_function(c, f_acm_rndis);
err_conf:
usb_put_function(f_acm_rndis);
+err_func_acm:
+ usb_remove_function(c, f_rndis);
+err_func_rndis:
+ usb_put_function(f_rndis);
return ret;
}
@@ -205,10 +232,14 @@ static __ref int rndis_config_register(struct usb_composite_dev *cdev)
/********** CDC ECM **********/
#ifdef CONFIG_USB_G_MULTI_CDC
+static struct usb_function_instance *fi_ecm;
static struct usb_function *f_acm_multi;
+static struct usb_function *f_ecm;
+static struct usb_function *f_msg_multi;
static __init int cdc_do_config(struct usb_configuration *c)
{
+ struct fsg_opts *fsg_opts;
int ret;
if (gadget_is_otg(c->cdev->gadget)) {
@@ -216,28 +247,51 @@ static __init int cdc_do_config(struct usb_configuration *c)
c->bmAttributes |= USB_CONFIG_ATT_WAKEUP;
}
- ret = ecm_bind_config(c, host_mac, the_dev);
+ f_ecm = usb_get_function(fi_ecm);
+ if (IS_ERR(f_ecm))
+ return PTR_ERR(f_ecm);
+
+ ret = usb_add_function(c, f_ecm);
if (ret < 0)
- return ret;
+ goto err_func_ecm;
/* implicit port_num is zero */
f_acm_multi = usb_get_function(fi_acm);
- if (IS_ERR(f_acm_multi))
- return PTR_ERR(f_acm_multi);
+ if (IS_ERR(f_acm_multi)) {
+ ret = PTR_ERR(f_acm_multi);
+ goto err_func_acm;
+ }
ret = usb_add_function(c, f_acm_multi);
if (ret)
goto err_conf;
- ret = fsg_bind_config(c->cdev, c, &fsg_common);
- if (ret < 0)
+ f_msg_multi = usb_get_function(fi_msg);
+ if (IS_ERR(f_msg_multi)) {
+ ret = PTR_ERR(f_msg_multi);
goto err_fsg;
+ }
+
+ fsg_opts = fsg_opts_from_func_inst(fi_msg);
+ ret = fsg_common_run_thread(fsg_opts->common);
+ if (ret)
+ goto err_run;
+
+ ret = usb_add_function(c, f_msg_multi);
+ if (ret)
+ goto err_run;
return 0;
+err_run:
+ usb_put_function(f_msg_multi);
err_fsg:
usb_remove_function(c, f_acm_multi);
err_conf:
usb_put_function(f_acm_multi);
+err_func_acm:
+ usb_remove_function(c, f_ecm);
+err_func_ecm:
+ usb_put_function(f_ecm);
return ret;
}
@@ -270,19 +324,67 @@ static __ref int cdc_config_register(struct usb_composite_dev *cdev)
static int __ref multi_bind(struct usb_composite_dev *cdev)
{
struct usb_gadget *gadget = cdev->gadget;
+#ifdef CONFIG_USB_G_MULTI_CDC
+ struct f_ecm_opts *ecm_opts;
+#endif
+#ifdef USB_ETH_RNDIS
+ struct f_rndis_opts *rndis_opts;
+#endif
+ struct fsg_opts *fsg_opts;
+ struct fsg_config config;
int status;
if (!can_support_ecm(cdev->gadget)) {
dev_err(&gadget->dev, "controller '%s' not usable\n",
- gadget->name);
+ gadget->name);
return -EINVAL;
}
- /* set up network link layer */
- the_dev = gether_setup(cdev->gadget, dev_addr, host_addr, host_mac,
- qmult);
- if (IS_ERR(the_dev))
- return PTR_ERR(the_dev);
+#ifdef CONFIG_USB_G_MULTI_CDC
+ fi_ecm = usb_get_function_instance("ecm");
+ if (IS_ERR(fi_ecm))
+ return PTR_ERR(fi_ecm);
+
+ ecm_opts = container_of(fi_ecm, struct f_ecm_opts, func_inst);
+
+ gether_set_qmult(ecm_opts->net, qmult);
+ if (!gether_set_host_addr(ecm_opts->net, host_addr))
+ pr_info("using host ethernet address: %s", host_addr);
+ if (!gether_set_dev_addr(ecm_opts->net, dev_addr))
+ pr_info("using self ethernet address: %s", dev_addr);
+#endif
+
+#ifdef USB_ETH_RNDIS
+ fi_rndis = usb_get_function_instance("rndis");
+ if (IS_ERR(fi_rndis)) {
+ status = PTR_ERR(fi_rndis);
+ goto fail;
+ }
+
+ rndis_opts = container_of(fi_rndis, struct f_rndis_opts, func_inst);
+
+ gether_set_qmult(rndis_opts->net, qmult);
+ if (!gether_set_host_addr(rndis_opts->net, host_addr))
+ pr_info("using host ethernet address: %s", host_addr);
+ if (!gether_set_dev_addr(rndis_opts->net, dev_addr))
+ pr_info("using self ethernet address: %s", dev_addr);
+#endif
+
+#if (defined CONFIG_USB_G_MULTI_CDC && defined USB_ETH_RNDIS)
+ /*
+ * If both ecm and rndis are selected then:
+ * 1) rndis borrows the net interface from ecm
+ * 2) since the interface is shared it must not be bound
+ * twice - in ecm's _and_ rndis' binds, so do it here.
+ */
+ gether_set_gadget(ecm_opts->net, cdev->gadget);
+ status = gether_register_netdev(ecm_opts->net);
+ if (status)
+ goto fail0;
+
+ rndis_borrow_net(fi_rndis, ecm_opts->net);
+ ecm_opts->bound = true;
+#endif
/* set up serial link layer */
fi_acm = usb_get_function_instance("acm");
@@ -292,57 +394,102 @@ static int __ref multi_bind(struct usb_composite_dev *cdev)
}
/* set up mass storage function */
- {
- void *retp;
- retp = fsg_common_from_params(&fsg_common, cdev, &fsg_mod_data);
- if (IS_ERR(retp)) {
- status = PTR_ERR(retp);
- goto fail1;
- }
+ fi_msg = usb_get_function_instance("mass_storage");
+ if (IS_ERR(fi_msg)) {
+ status = PTR_ERR(fi_msg);
+ goto fail1;
}
+ fsg_config_from_params(&config, &fsg_mod_data, fsg_num_buffers);
+ fsg_opts = fsg_opts_from_func_inst(fi_msg);
+
+ fsg_opts->no_configfs = true;
+ status = fsg_common_set_num_buffers(fsg_opts->common, fsg_num_buffers);
+ if (status)
+ goto fail2;
+
+ status = fsg_common_set_nluns(fsg_opts->common, config.nluns);
+ if (status)
+ goto fail_set_nluns;
+
+ status = fsg_common_set_cdev(fsg_opts->common, cdev, config.can_stall);
+ if (status)
+ goto fail_set_cdev;
+
+ fsg_common_set_sysfs(fsg_opts->common, true);
+ status = fsg_common_create_luns(fsg_opts->common, &config);
+ if (status)
+ goto fail_set_cdev;
+
+ fsg_common_set_inquiry_string(fsg_opts->common, config.vendor_name,
+ config.product_name);
/* allocate string IDs */
status = usb_string_ids_tab(cdev, strings_dev);
if (unlikely(status < 0))
- goto fail2;
+ goto fail_string_ids;
device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id;
/* register configurations */
status = rndis_config_register(cdev);
if (unlikely(status < 0))
- goto fail2;
+ goto fail_string_ids;
status = cdc_config_register(cdev);
if (unlikely(status < 0))
- goto fail2;
+ goto fail_string_ids;
usb_composite_overwrite_options(cdev, &coverwrite);
/* we're done */
dev_info(&gadget->dev, DRIVER_DESC "\n");
- fsg_common_put(&fsg_common);
return 0;
/* error recovery */
+fail_string_ids:
+ fsg_common_remove_luns(fsg_opts->common);
+fail_set_cdev:
+ fsg_common_free_luns(fsg_opts->common);
+fail_set_nluns:
+ fsg_common_free_buffers(fsg_opts->common);
fail2:
- fsg_common_put(&fsg_common);
+ usb_put_function_instance(fi_msg);
fail1:
usb_put_function_instance(fi_acm);
fail0:
- gether_cleanup(the_dev);
+#ifdef USB_ETH_RNDIS
+ usb_put_function_instance(fi_rndis);
+fail:
+#endif
+#ifdef CONFIG_USB_G_MULTI_CDC
+ usb_put_function_instance(fi_ecm);
+#endif
return status;
}
static int __exit multi_unbind(struct usb_composite_dev *cdev)
{
#ifdef CONFIG_USB_G_MULTI_CDC
+ usb_put_function(f_msg_multi);
+#endif
+#ifdef USB_ETH_RNDIS
+ usb_put_function(f_msg_rndis);
+#endif
+ usb_put_function_instance(fi_msg);
+#ifdef CONFIG_USB_G_MULTI_CDC
usb_put_function(f_acm_multi);
#endif
#ifdef USB_ETH_RNDIS
usb_put_function(f_acm_rndis);
#endif
usb_put_function_instance(fi_acm);
- gether_cleanup(the_dev);
+#ifdef USB_ETH_RNDIS
+ usb_put_function(f_rndis);
+ usb_put_function_instance(fi_rndis);
+#endif
+#ifdef CONFIG_USB_G_MULTI_CDC
+ usb_put_function(f_ecm);
+ usb_put_function_instance(fi_ecm);
+#endif
return 0;
}
diff --git a/drivers/usb/gadget/mv_u3d_core.c b/drivers/usb/gadget/mv_u3d_core.c
index 561b30efb8ee..234711eabea1 100644
--- a/drivers/usb/gadget/mv_u3d_core.c
+++ b/drivers/usb/gadget/mv_u3d_core.c
@@ -310,6 +310,7 @@ static struct mv_u3d_trb *mv_u3d_build_trb_one(struct mv_u3d_req *req,
*/
trb_hw = dma_pool_alloc(u3d->trb_pool, GFP_ATOMIC, dma);
if (!trb_hw) {
+ kfree(trb);
dev_err(u3d->dev,
"%s, dma_pool_alloc fail\n", __func__);
return NULL;
@@ -454,6 +455,7 @@ static int mv_u3d_req_to_trb(struct mv_u3d_req *req)
trb_hw = kcalloc(trb_num, sizeof(*trb_hw), GFP_ATOMIC);
if (!trb_hw) {
+ kfree(trb);
dev_err(u3d->dev,
"%s, trb_hw alloc fail\n", __func__);
return -ENOMEM;
@@ -1936,7 +1938,7 @@ static int mv_u3d_probe(struct platform_device *dev)
}
u3d->irq = r->start;
if (request_irq(u3d->irq, mv_u3d_irq,
- IRQF_DISABLED | IRQF_SHARED, driver_name, u3d)) {
+ IRQF_SHARED, driver_name, u3d)) {
u3d->irq = 0;
dev_err(&dev->dev, "Request irq %d for u3d failed\n",
u3d->irq);
diff --git a/drivers/usb/gadget/net2280.c b/drivers/usb/gadget/net2280.c
index 0781bff70015..fc852177c087 100644
--- a/drivers/usb/gadget/net2280.c
+++ b/drivers/usb/gadget/net2280.c
@@ -129,7 +129,7 @@ static char *type_string (u8 bmAttributes)
case USB_ENDPOINT_XFER_BULK: return "bulk";
case USB_ENDPOINT_XFER_ISOC: return "iso";
case USB_ENDPOINT_XFER_INT: return "intr";
- };
+ }
return "control";
}
#endif
@@ -1630,7 +1630,7 @@ static ssize_t queues_show(struct device *_dev, struct device_attribute *attr,
val = "intr"; break;
default:
val = "iso"; break;
- }; val; }),
+ } val; }),
usb_endpoint_maxp (d) & 0x1fff,
ep->dma ? "dma" : "pio", ep->fifo_size
);
@@ -2680,7 +2680,6 @@ static void net2280_remove (struct pci_dev *pdev)
if (dev->enabled)
pci_disable_device (pdev);
device_remove_file (&pdev->dev, &dev_attr_registers);
- pci_set_drvdata (pdev, NULL);
INFO (dev, "unbind\n");
}
diff --git a/drivers/usb/gadget/pch_udc.c b/drivers/usb/gadget/pch_udc.c
index 24174e1d1564..32d5e923750b 100644
--- a/drivers/usb/gadget/pch_udc.c
+++ b/drivers/usb/gadget/pch_udc.c
@@ -3080,7 +3080,6 @@ static void pch_udc_remove(struct pci_dev *pdev)
if (dev->active)
pci_disable_device(pdev);
kfree(dev);
- pci_set_drvdata(pdev, NULL);
}
#ifdef CONFIG_PM
diff --git a/drivers/usb/gadget/rndis.c b/drivers/usb/gadget/rndis.c
index 9575085ded81..a3ad732bc812 100644
--- a/drivers/usb/gadget/rndis.c
+++ b/drivers/usb/gadget/rndis.c
@@ -1068,7 +1068,7 @@ static int rndis_proc_show(struct seq_file *m, void *v)
s = "RNDIS_INITIALIZED"; break;
case RNDIS_DATA_INITIALIZED:
s = "RNDIS_DATA_INITIALIZED"; break;
- }; s; }),
+ } s; }),
param->medium,
(param->media_state) ? 0 : param->speed*100,
(param->media_state) ? "disconnected" : "connected",
diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c
index a8a99e4748d5..9875d9c0823f 100644
--- a/drivers/usb/gadget/s3c-hsotg.c
+++ b/drivers/usb/gadget/s3c-hsotg.c
@@ -83,9 +83,12 @@ struct s3c_hsotg_req;
* @dir_in: Set to true if this endpoint is of the IN direction, which
* means that it is sending data to the Host.
* @index: The index for the endpoint registers.
+ * @mc: Multi Count - number of transactions per microframe
+ * @interval - Interval for periodic endpoints
* @name: The name array passed to the USB core.
* @halted: Set if the endpoint has been halted.
* @periodic: Set if this is a periodic ep, such as Interrupt
+ * @isochronous: Set if this is a isochronous ep
* @sent_zlp: Set if we've sent a zero-length packet.
* @total_data: The total number of data bytes done.
* @fifo_size: The size of the FIFO (for periodic IN endpoints)
@@ -121,9 +124,12 @@ struct s3c_hsotg_ep {
unsigned char dir_in;
unsigned char index;
+ unsigned char mc;
+ unsigned char interval;
unsigned int halted:1;
unsigned int periodic:1;
+ unsigned int isochronous:1;
unsigned int sent_zlp:1;
char name[10];
@@ -468,6 +474,7 @@ static int s3c_hsotg_write_fifo(struct s3c_hsotg *hsotg,
void *data;
int can_write;
int pkt_round;
+ int max_transfer;
to_write -= (buf_pos - hs_ep->last_load);
@@ -535,8 +542,10 @@ static int s3c_hsotg_write_fifo(struct s3c_hsotg *hsotg,
can_write *= 4; /* fifo size is in 32bit quantities. */
}
- dev_dbg(hsotg->dev, "%s: GNPTXSTS=%08x, can=%d, to=%d, mps %d\n",
- __func__, gnptxsts, can_write, to_write, hs_ep->ep.maxpacket);
+ max_transfer = hs_ep->ep.maxpacket * hs_ep->mc;
+
+ dev_dbg(hsotg->dev, "%s: GNPTXSTS=%08x, can=%d, to=%d, max_transfer %d\n",
+ __func__, gnptxsts, can_write, to_write, max_transfer);
/*
* limit to 512 bytes of data, it seems at least on the non-periodic
@@ -551,19 +560,21 @@ static int s3c_hsotg_write_fifo(struct s3c_hsotg *hsotg,
* the transfer to return that it did not run out of fifo space
* doing it.
*/
- if (to_write > hs_ep->ep.maxpacket) {
- to_write = hs_ep->ep.maxpacket;
+ if (to_write > max_transfer) {
+ to_write = max_transfer;
- s3c_hsotg_en_gsint(hsotg,
- periodic ? GINTSTS_PTxFEmp :
- GINTSTS_NPTxFEmp);
+ /* it's needed only when we do not use dedicated fifos */
+ if (!hsotg->dedicated_fifos)
+ s3c_hsotg_en_gsint(hsotg,
+ periodic ? GINTSTS_PTxFEmp :
+ GINTSTS_NPTxFEmp);
}
/* see if we can write data */
if (to_write > can_write) {
to_write = can_write;
- pkt_round = to_write % hs_ep->ep.maxpacket;
+ pkt_round = to_write % max_transfer;
/*
* Round the write down to an
@@ -581,9 +592,11 @@ static int s3c_hsotg_write_fifo(struct s3c_hsotg *hsotg,
* is more room left.
*/
- s3c_hsotg_en_gsint(hsotg,
- periodic ? GINTSTS_PTxFEmp :
- GINTSTS_NPTxFEmp);
+ /* it's needed only when we do not use dedicated fifos */
+ if (!hsotg->dedicated_fifos)
+ s3c_hsotg_en_gsint(hsotg,
+ periodic ? GINTSTS_PTxFEmp :
+ GINTSTS_NPTxFEmp);
}
dev_dbg(hsotg->dev, "write %d/%d, can_write %d, done %d\n",
@@ -727,8 +740,16 @@ static void s3c_hsotg_start_req(struct s3c_hsotg *hsotg,
else
packets = 1; /* send one packet if length is zero. */
+ if (hs_ep->isochronous && length > (hs_ep->mc * hs_ep->ep.maxpacket)) {
+ dev_err(hsotg->dev, "req length > maxpacket*mc\n");
+ return;
+ }
+
if (dir_in && index != 0)
- epsize = DxEPTSIZ_MC(1);
+ if (hs_ep->isochronous)
+ epsize = DxEPTSIZ_MC(packets);
+ else
+ epsize = DxEPTSIZ_MC(1);
else
epsize = 0;
@@ -820,6 +841,9 @@ static void s3c_hsotg_start_req(struct s3c_hsotg *hsotg,
dev_dbg(hsotg->dev, "%s: DxEPCTL=0x%08x\n",
__func__, readl(hsotg->regs + epctrl_reg));
+
+ /* enable ep interrupts */
+ s3c_hsotg_ctrl_epint(hsotg, hs_ep->index, hs_ep->dir_in, 1);
}
/**
@@ -1091,6 +1115,7 @@ static int s3c_hsotg_process_req_feature(struct s3c_hsotg *hsotg,
bool set = (ctrl->bRequest == USB_REQ_SET_FEATURE);
struct s3c_hsotg_ep *ep;
int ret;
+ bool halted;
dev_dbg(hsotg->dev, "%s: %s_FEATURE\n",
__func__, set ? "SET" : "CLEAR");
@@ -1105,6 +1130,8 @@ static int s3c_hsotg_process_req_feature(struct s3c_hsotg *hsotg,
switch (le16_to_cpu(ctrl->wValue)) {
case USB_ENDPOINT_HALT:
+ halted = ep->halted;
+
s3c_hsotg_ep_sethalt(&ep->ep, set);
ret = s3c_hsotg_send_reply(hsotg, ep0, NULL, 0);
@@ -1114,7 +1141,12 @@ static int s3c_hsotg_process_req_feature(struct s3c_hsotg *hsotg,
return ret;
}
- if (!set) {
+ /*
+ * we have to complete all requests for ep if it was
+ * halted, and the halt was cleared by CLEAR_FEATURE
+ */
+
+ if (!set && halted) {
/*
* If we have request in progress,
* then complete it
@@ -1147,6 +1179,8 @@ static int s3c_hsotg_process_req_feature(struct s3c_hsotg *hsotg,
return 1;
}
+static void s3c_hsotg_enqueue_setup(struct s3c_hsotg *hsotg);
+
/**
* s3c_hsotg_process_control - process a control request
* @hsotg: The device state
@@ -1246,11 +1280,15 @@ static void s3c_hsotg_process_control(struct s3c_hsotg *hsotg,
* don't believe we need to anything more to get the EP
* to reply with a STALL packet
*/
+
+ /*
+ * complete won't be called, so we enqueue
+ * setup request here
+ */
+ s3c_hsotg_enqueue_setup(hsotg);
}
}
-static void s3c_hsotg_enqueue_setup(struct s3c_hsotg *hsotg);
-
/**
* s3c_hsotg_complete_setup - completion of a setup transfer
* @ep: The endpoint the request was on.
@@ -1698,6 +1736,7 @@ static void s3c_hsotg_set_ep_maxpacket(struct s3c_hsotg *hsotg,
struct s3c_hsotg_ep *hs_ep = &hsotg->eps[ep];
void __iomem *regs = hsotg->regs;
u32 mpsval;
+ u32 mcval;
u32 reg;
if (ep == 0) {
@@ -1705,15 +1744,19 @@ static void s3c_hsotg_set_ep_maxpacket(struct s3c_hsotg *hsotg,
mpsval = s3c_hsotg_ep0_mps(mps);
if (mpsval > 3)
goto bad_mps;
+ hs_ep->ep.maxpacket = mps;
+ hs_ep->mc = 1;
} else {
- if (mps >= DxEPCTL_MPS_LIMIT+1)
+ mpsval = mps & DxEPCTL_MPS_MASK;
+ if (mpsval > 1024)
goto bad_mps;
-
- mpsval = mps;
+ mcval = ((mps >> 11) & 0x3) + 1;
+ hs_ep->mc = mcval;
+ if (mcval > 3)
+ goto bad_mps;
+ hs_ep->ep.maxpacket = mpsval;
}
- hs_ep->ep.maxpacket = mps;
-
/*
* update both the in and out endpoint controldir_ registers, even
* if one of the directions may not be in use.
@@ -1782,8 +1825,16 @@ static int s3c_hsotg_trytx(struct s3c_hsotg *hsotg,
{
struct s3c_hsotg_req *hs_req = hs_ep->req;
- if (!hs_ep->dir_in || !hs_req)
+ if (!hs_ep->dir_in || !hs_req) {
+ /**
+ * if request is not enqueued, we disable interrupts
+ * for endpoints, excepting ep0
+ */
+ if (hs_ep->index != 0)
+ s3c_hsotg_ctrl_epint(hsotg, hs_ep->index,
+ hs_ep->dir_in, 0);
return 0;
+ }
if (hs_req->req.actual < hs_req->req.length) {
dev_dbg(hsotg->dev, "trying to write more for ep%d\n",
@@ -1887,8 +1938,10 @@ static void s3c_hsotg_epint(struct s3c_hsotg *hsotg, unsigned int idx,
u32 epctl_reg = dir_in ? DIEPCTL(idx) : DOEPCTL(idx);
u32 epsiz_reg = dir_in ? DIEPTSIZ(idx) : DOEPTSIZ(idx);
u32 ints;
+ u32 ctrl;
ints = readl(hsotg->regs + epint_reg);
+ ctrl = readl(hsotg->regs + epctl_reg);
/* Clear endpoint interrupts */
writel(ints, hsotg->regs + epint_reg);
@@ -1897,6 +1950,14 @@ static void s3c_hsotg_epint(struct s3c_hsotg *hsotg, unsigned int idx,
__func__, idx, dir_in ? "in" : "out", ints);
if (ints & DxEPINT_XferCompl) {
+ if (hs_ep->isochronous && hs_ep->interval == 1) {
+ if (ctrl & DxEPCTL_EOFrNum)
+ ctrl |= DxEPCTL_SetEvenFr;
+ else
+ ctrl |= DxEPCTL_SetOddFr;
+ writel(ctrl, hsotg->regs + epctl_reg);
+ }
+
dev_dbg(hsotg->dev,
"%s: XferCompl: DxEPCTL=0x%08x, DxEPTSIZ=%08x\n",
__func__, readl(hsotg->regs + epctl_reg),
@@ -1963,7 +2024,7 @@ static void s3c_hsotg_epint(struct s3c_hsotg *hsotg, unsigned int idx,
if (ints & DxEPINT_Back2BackSetup)
dev_dbg(hsotg->dev, "%s: B2BSetup/INEPNakEff\n", __func__);
- if (dir_in) {
+ if (dir_in && !hs_ep->isochronous) {
/* not sure if this is important, but we'll clear it anyway */
if (ints & DIEPMSK_INTknTXFEmpMsk) {
dev_dbg(hsotg->dev, "%s: ep%d: INTknTXFEmpMsk\n",
@@ -2092,12 +2153,14 @@ static void kill_all_requests(struct s3c_hsotg *hsotg,
}
#define call_gadget(_hs, _entry) \
+do { \
if ((_hs)->gadget.speed != USB_SPEED_UNKNOWN && \
(_hs)->driver && (_hs)->driver->_entry) { \
spin_unlock(&_hs->lock); \
(_hs)->driver->_entry(&(_hs)->gadget); \
spin_lock(&_hs->lock); \
- }
+ } \
+} while (0)
/**
* s3c_hsotg_disconnect - disconnect service
@@ -2241,15 +2304,19 @@ static void s3c_hsotg_core_init(struct s3c_hsotg *hsotg)
GAHBCFG_HBstLen_Incr4,
hsotg->regs + GAHBCFG);
else
- writel(GAHBCFG_GlblIntrEn, hsotg->regs + GAHBCFG);
+ writel(((hsotg->dedicated_fifos) ? (GAHBCFG_NPTxFEmpLvl |
+ GAHBCFG_PTxFEmpLvl) : 0) |
+ GAHBCFG_GlblIntrEn,
+ hsotg->regs + GAHBCFG);
/*
- * Enabling INTknTXFEmpMsk here seems to be a big mistake, we end
- * up being flooded with interrupts if the host is polling the
- * endpoint to try and read data.
+ * If INTknTXFEmpMsk is enabled, it's important to disable ep interrupts
+ * when we have no data to transfer. Otherwise we get being flooded by
+ * interrupts.
*/
- writel(((hsotg->dedicated_fifos) ? DIEPMSK_TxFIFOEmpty : 0) |
+ writel(((hsotg->dedicated_fifos) ? DIEPMSK_TxFIFOEmpty |
+ DIEPMSK_INTknTXFEmpMsk : 0) |
DIEPMSK_EPDisbldMsk | DIEPMSK_XferComplMsk |
DIEPMSK_TimeOUTMsk | DIEPMSK_AHBErrMsk |
DIEPMSK_INTknEPMisMsk,
@@ -2378,10 +2445,14 @@ irq_retry:
if (gintsts & (GINTSTS_OEPInt | GINTSTS_IEPInt)) {
u32 daint = readl(hsotg->regs + DAINT);
- u32 daint_out = daint >> DAINT_OutEP_SHIFT;
- u32 daint_in = daint & ~(daint_out << DAINT_OutEP_SHIFT);
+ u32 daintmsk = readl(hsotg->regs + DAINTMSK);
+ u32 daint_out, daint_in;
int ep;
+ daint &= daintmsk;
+ daint_out = daint >> DAINT_OutEP_SHIFT;
+ daint_in = daint & ~(daint_out << DAINT_OutEP_SHIFT);
+
dev_dbg(hsotg->dev, "%s: daint=%08x\n", __func__, daint);
for (ep = 0; ep < 15 && daint_out; ep++, daint_out >>= 1) {
@@ -2577,16 +2648,25 @@ static int s3c_hsotg_ep_enable(struct usb_ep *ep,
epctrl |= DxEPCTL_SNAK;
/* update the endpoint state */
- hs_ep->ep.maxpacket = mps;
+ s3c_hsotg_set_ep_maxpacket(hsotg, hs_ep->index, mps);
/* default, set to non-periodic */
+ hs_ep->isochronous = 0;
hs_ep->periodic = 0;
+ hs_ep->halted = 0;
+ hs_ep->interval = desc->bInterval;
+
+ if (hs_ep->interval > 1 && hs_ep->mc > 1)
+ dev_err(hsotg->dev, "MC > 1 when interval is not 1\n");
switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
case USB_ENDPOINT_XFER_ISOC:
- dev_err(hsotg->dev, "no current ISOC support\n");
- ret = -EINVAL;
- goto out;
+ epctrl |= DxEPCTL_EPType_Iso;
+ epctrl |= DxEPCTL_SetEvenFr;
+ hs_ep->isochronous = 1;
+ if (dir_in)
+ hs_ep->periodic = 1;
+ break;
case USB_ENDPOINT_XFER_BULK:
epctrl |= DxEPCTL_EPType_Bulk;
@@ -2634,7 +2714,6 @@ static int s3c_hsotg_ep_enable(struct usb_ep *ep,
/* enable the endpoint interrupt */
s3c_hsotg_ctrl_epint(hsotg, index, dir_in, 1);
-out:
spin_unlock_irqrestore(&hsotg->lock, flags);
return ret;
}
@@ -2776,6 +2855,8 @@ static int s3c_hsotg_ep_sethalt(struct usb_ep *ep, int value)
writel(epctl, hs->regs + epreg);
+ hs_ep->halted = value;
+
return 0;
}
@@ -2903,7 +2984,7 @@ static int s3c_hsotg_udc_start(struct usb_gadget *gadget,
int ret;
if (!hsotg) {
- printk(KERN_ERR "%s: called with no device\n", __func__);
+ pr_err("%s: called with no device\n", __func__);
return -ENODEV;
}
@@ -3066,7 +3147,7 @@ static void s3c_hsotg_initep(struct s3c_hsotg *hsotg,
hs_ep->parent = hsotg;
hs_ep->ep.name = hs_ep->name;
- hs_ep->ep.maxpacket = epnum ? 512 : EP0_MPS_LIMIT;
+ hs_ep->ep.maxpacket = epnum ? 1024 : EP0_MPS_LIMIT;
hs_ep->ep.ops = &s3c_hsotg_ep_ops;
/*
@@ -3200,7 +3281,7 @@ static int state_show(struct seq_file *seq, void *v)
readl(regs + GNPTXSTS),
readl(regs + GRXSTSR));
- seq_printf(seq, "\nEndpoint status:\n");
+ seq_puts(seq, "\nEndpoint status:\n");
for (idx = 0; idx < 15; idx++) {
u32 in, out;
@@ -3217,7 +3298,7 @@ static int state_show(struct seq_file *seq, void *v)
seq_printf(seq, ", DIEPTSIZ=0x%08x, DOEPTSIZ=0x%08x",
in, out);
- seq_printf(seq, "\n");
+ seq_puts(seq, "\n");
}
return 0;
@@ -3251,7 +3332,7 @@ static int fifo_show(struct seq_file *seq, void *v)
u32 val;
int idx;
- seq_printf(seq, "Non-periodic FIFOs:\n");
+ seq_puts(seq, "Non-periodic FIFOs:\n");
seq_printf(seq, "RXFIFO: Size %d\n", readl(regs + GRXFSIZ));
val = readl(regs + GNPTXFSIZ);
@@ -3259,7 +3340,7 @@ static int fifo_show(struct seq_file *seq, void *v)
val >> GNPTXFSIZ_NPTxFDep_SHIFT,
val & GNPTXFSIZ_NPTxFStAddr_MASK);
- seq_printf(seq, "\nPeriodic TXFIFOs:\n");
+ seq_puts(seq, "\nPeriodic TXFIFOs:\n");
for (idx = 1; idx <= 15; idx++) {
val = readl(regs + DPTXFSIZn(idx));
@@ -3330,7 +3411,7 @@ static int ep_show(struct seq_file *seq, void *v)
readl(regs + DIEPTSIZ(index)),
readl(regs + DOEPTSIZ(index)));
- seq_printf(seq, "\n");
+ seq_puts(seq, "\n");
seq_printf(seq, "mps %d\n", ep->ep.maxpacket);
seq_printf(seq, "total_data=%ld\n", ep->total_data);
@@ -3341,7 +3422,7 @@ static int ep_show(struct seq_file *seq, void *v)
list_for_each_entry(req, &ep->queue, queue) {
if (--show_limit < 0) {
- seq_printf(seq, "not showing more requests...\n");
+ seq_puts(seq, "not showing more requests...\n");
break;
}
diff --git a/drivers/usb/gadget/storage_common.c b/drivers/usb/gadget/storage_common.c
index 08a1a3210a21..ec20a1f50c2d 100644
--- a/drivers/usb/gadget/storage_common.c
+++ b/drivers/usb/gadget/storage_common.c
@@ -23,242 +23,17 @@
* The valid range of num_buffers is: num >= 2 && num <= 4.
*/
+#include <linux/module.h>
+#include <linux/blkdev.h>
+#include <linux/file.h>
+#include <linux/fs.h>
+#include <linux/usb/composite.h>
-#include <linux/usb/storage.h>
-#include <scsi/scsi.h>
-#include <asm/unaligned.h>
-
-
-/*
- * Thanks to NetChip Technologies for donating this product ID.
- *
- * DO NOT REUSE THESE IDs with any other driver!! Ever!!
- * Instead: allocate your own, using normal USB-IF procedures.
- */
-#define FSG_VENDOR_ID 0x0525 /* NetChip */
-#define FSG_PRODUCT_ID 0xa4a5 /* Linux-USB File-backed Storage Gadget */
-
-
-/*-------------------------------------------------------------------------*/
-
-
-#ifndef DEBUG
-#undef VERBOSE_DEBUG
-#undef DUMP_MSGS
-#endif /* !DEBUG */
-
-#ifdef VERBOSE_DEBUG
-#define VLDBG LDBG
-#else
-#define VLDBG(lun, fmt, args...) do { } while (0)
-#endif /* VERBOSE_DEBUG */
-
-#define LDBG(lun, fmt, args...) dev_dbg (&(lun)->dev, fmt, ## args)
-#define LERROR(lun, fmt, args...) dev_err (&(lun)->dev, fmt, ## args)
-#define LWARN(lun, fmt, args...) dev_warn(&(lun)->dev, fmt, ## args)
-#define LINFO(lun, fmt, args...) dev_info(&(lun)->dev, fmt, ## args)
-
-
-#ifdef DUMP_MSGS
-
-# define dump_msg(fsg, /* const char * */ label, \
- /* const u8 * */ buf, /* unsigned */ length) do { \
- if (length < 512) { \
- DBG(fsg, "%s, length %u:\n", label, length); \
- print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, \
- 16, 1, buf, length, 0); \
- } \
-} while (0)
-
-# define dump_cdb(fsg) do { } while (0)
-
-#else
-
-# define dump_msg(fsg, /* const char * */ label, \
- /* const u8 * */ buf, /* unsigned */ length) do { } while (0)
-
-# ifdef VERBOSE_DEBUG
-
-# define dump_cdb(fsg) \
- print_hex_dump(KERN_DEBUG, "SCSI CDB: ", DUMP_PREFIX_NONE, \
- 16, 1, (fsg)->cmnd, (fsg)->cmnd_size, 0) \
-
-# else
-
-# define dump_cdb(fsg) do { } while (0)
-
-# endif /* VERBOSE_DEBUG */
-
-#endif /* DUMP_MSGS */
-
-/*-------------------------------------------------------------------------*/
-
-/* Length of a SCSI Command Data Block */
-#define MAX_COMMAND_SIZE 16
-
-/* SCSI Sense Key/Additional Sense Code/ASC Qualifier values */
-#define SS_NO_SENSE 0
-#define SS_COMMUNICATION_FAILURE 0x040800
-#define SS_INVALID_COMMAND 0x052000
-#define SS_INVALID_FIELD_IN_CDB 0x052400
-#define SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE 0x052100
-#define SS_LOGICAL_UNIT_NOT_SUPPORTED 0x052500
-#define SS_MEDIUM_NOT_PRESENT 0x023a00
-#define SS_MEDIUM_REMOVAL_PREVENTED 0x055302
-#define SS_NOT_READY_TO_READY_TRANSITION 0x062800
-#define SS_RESET_OCCURRED 0x062900
-#define SS_SAVING_PARAMETERS_NOT_SUPPORTED 0x053900
-#define SS_UNRECOVERED_READ_ERROR 0x031100
-#define SS_WRITE_ERROR 0x030c02
-#define SS_WRITE_PROTECTED 0x072700
-
-#define SK(x) ((u8) ((x) >> 16)) /* Sense Key byte, etc. */
-#define ASC(x) ((u8) ((x) >> 8))
-#define ASCQ(x) ((u8) (x))
-
-
-/*-------------------------------------------------------------------------*/
-
-
-struct fsg_lun {
- struct file *filp;
- loff_t file_length;
- loff_t num_sectors;
-
- unsigned int initially_ro:1;
- unsigned int ro:1;
- unsigned int removable:1;
- unsigned int cdrom:1;
- unsigned int prevent_medium_removal:1;
- unsigned int registered:1;
- unsigned int info_valid:1;
- unsigned int nofua:1;
-
- u32 sense_data;
- u32 sense_data_info;
- u32 unit_attention_data;
-
- unsigned int blkbits; /* Bits of logical block size of bound block device */
- unsigned int blksize; /* logical block size of bound block device */
- struct device dev;
-};
-
-static inline bool fsg_lun_is_open(struct fsg_lun *curlun)
-{
- return curlun->filp != NULL;
-}
-
-static inline struct fsg_lun *fsg_lun_from_dev(struct device *dev)
-{
- return container_of(dev, struct fsg_lun, dev);
-}
-
-
-/* Big enough to hold our biggest descriptor */
-#define EP0_BUFSIZE 256
-#define DELAYED_STATUS (EP0_BUFSIZE + 999) /* An impossibly large value */
-
-#ifdef CONFIG_USB_GADGET_DEBUG_FILES
-
-static unsigned int fsg_num_buffers = CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS;
-module_param_named(num_buffers, fsg_num_buffers, uint, S_IRUGO);
-MODULE_PARM_DESC(num_buffers, "Number of pipeline buffers");
-
-#else
-
-/*
- * Number of buffers we will use.
- * 2 is usually enough for good buffering pipeline
- */
-#define fsg_num_buffers CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS
-
-#endif /* CONFIG_USB_GADGET_DEBUG_FILES */
-
-/* check if fsg_num_buffers is within a valid range */
-static inline int fsg_num_buffers_validate(void)
-{
- if (fsg_num_buffers >= 2 && fsg_num_buffers <= 4)
- return 0;
- pr_err("fsg_num_buffers %u is out of range (%d to %d)\n",
- fsg_num_buffers, 2 ,4);
- return -EINVAL;
-}
-
-/* Default size of buffer length. */
-#define FSG_BUFLEN ((u32)16384)
-
-/* Maximal number of LUNs supported in mass storage function */
-#define FSG_MAX_LUNS 8
-
-enum fsg_buffer_state {
- BUF_STATE_EMPTY = 0,
- BUF_STATE_FULL,
- BUF_STATE_BUSY
-};
-
-struct fsg_buffhd {
- void *buf;
- enum fsg_buffer_state state;
- struct fsg_buffhd *next;
-
- /*
- * The NetChip 2280 is faster, and handles some protocol faults
- * better, if we don't submit any short bulk-out read requests.
- * So we will record the intended request length here.
- */
- unsigned int bulk_out_intended_length;
-
- struct usb_request *inreq;
- int inreq_busy;
- struct usb_request *outreq;
- int outreq_busy;
-};
-
-enum fsg_state {
- /* This one isn't used anywhere */
- FSG_STATE_COMMAND_PHASE = -10,
- FSG_STATE_DATA_PHASE,
- FSG_STATE_STATUS_PHASE,
-
- FSG_STATE_IDLE = 0,
- FSG_STATE_ABORT_BULK_OUT,
- FSG_STATE_RESET,
- FSG_STATE_INTERFACE_CHANGE,
- FSG_STATE_CONFIG_CHANGE,
- FSG_STATE_DISCONNECT,
- FSG_STATE_EXIT,
- FSG_STATE_TERMINATED
-};
-
-enum data_direction {
- DATA_DIR_UNKNOWN = 0,
- DATA_DIR_FROM_HOST,
- DATA_DIR_TO_HOST,
- DATA_DIR_NONE
-};
-
-
-/*-------------------------------------------------------------------------*/
-
-
-static inline u32 get_unaligned_be24(u8 *buf)
-{
- return 0xffffff & (u32) get_unaligned_be32(buf - 1);
-}
-
-
-/*-------------------------------------------------------------------------*/
-
-
-enum {
- FSG_STRING_INTERFACE
-};
-
+#include "storage_common.h"
/* There is only one interface. */
-static struct usb_interface_descriptor
-fsg_intf_desc = {
+struct usb_interface_descriptor fsg_intf_desc = {
.bLength = sizeof fsg_intf_desc,
.bDescriptorType = USB_DT_INTERFACE,
@@ -268,14 +43,14 @@ fsg_intf_desc = {
.bInterfaceProtocol = USB_PR_BULK, /* Adjusted during fsg_bind() */
.iInterface = FSG_STRING_INTERFACE,
};
+EXPORT_SYMBOL(fsg_intf_desc);
/*
* Three full-speed endpoint descriptors: bulk-in, bulk-out, and
* interrupt-in.
*/
-static struct usb_endpoint_descriptor
-fsg_fs_bulk_in_desc = {
+struct usb_endpoint_descriptor fsg_fs_bulk_in_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
@@ -283,9 +58,9 @@ fsg_fs_bulk_in_desc = {
.bmAttributes = USB_ENDPOINT_XFER_BULK,
/* wMaxPacketSize set by autoconfiguration */
};
+EXPORT_SYMBOL(fsg_fs_bulk_in_desc);
-static struct usb_endpoint_descriptor
-fsg_fs_bulk_out_desc = {
+struct usb_endpoint_descriptor fsg_fs_bulk_out_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
@@ -293,13 +68,15 @@ fsg_fs_bulk_out_desc = {
.bmAttributes = USB_ENDPOINT_XFER_BULK,
/* wMaxPacketSize set by autoconfiguration */
};
+EXPORT_SYMBOL(fsg_fs_bulk_out_desc);
-static struct usb_descriptor_header *fsg_fs_function[] = {
+struct usb_descriptor_header *fsg_fs_function[] = {
(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,
NULL,
};
+EXPORT_SYMBOL(fsg_fs_function);
/*
@@ -310,8 +87,7 @@ static struct usb_descriptor_header *fsg_fs_function[] = {
* and a "device qualifier" ... plus more construction options
* for the configuration descriptor.
*/
-static struct usb_endpoint_descriptor
-fsg_hs_bulk_in_desc = {
+struct usb_endpoint_descriptor fsg_hs_bulk_in_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
@@ -319,9 +95,9 @@ fsg_hs_bulk_in_desc = {
.bmAttributes = USB_ENDPOINT_XFER_BULK,
.wMaxPacketSize = cpu_to_le16(512),
};
+EXPORT_SYMBOL(fsg_hs_bulk_in_desc);
-static struct usb_endpoint_descriptor
-fsg_hs_bulk_out_desc = {
+struct usb_endpoint_descriptor fsg_hs_bulk_out_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
@@ -330,17 +106,18 @@ fsg_hs_bulk_out_desc = {
.wMaxPacketSize = cpu_to_le16(512),
.bInterval = 1, /* NAK every 1 uframe */
};
+EXPORT_SYMBOL(fsg_hs_bulk_out_desc);
-static struct usb_descriptor_header *fsg_hs_function[] = {
+struct usb_descriptor_header *fsg_hs_function[] = {
(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,
NULL,
};
+EXPORT_SYMBOL(fsg_hs_function);
-static struct usb_endpoint_descriptor
-fsg_ss_bulk_in_desc = {
+struct usb_endpoint_descriptor fsg_ss_bulk_in_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
@@ -348,16 +125,17 @@ fsg_ss_bulk_in_desc = {
.bmAttributes = USB_ENDPOINT_XFER_BULK,
.wMaxPacketSize = cpu_to_le16(1024),
};
+EXPORT_SYMBOL(fsg_ss_bulk_in_desc);
-static struct usb_ss_ep_comp_descriptor fsg_ss_bulk_in_comp_desc = {
+struct usb_ss_ep_comp_descriptor fsg_ss_bulk_in_comp_desc = {
.bLength = sizeof(fsg_ss_bulk_in_comp_desc),
.bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
/*.bMaxBurst = DYNAMIC, */
};
+EXPORT_SYMBOL(fsg_ss_bulk_in_comp_desc);
-static struct usb_endpoint_descriptor
-fsg_ss_bulk_out_desc = {
+struct usb_endpoint_descriptor fsg_ss_bulk_out_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
@@ -365,15 +143,17 @@ fsg_ss_bulk_out_desc = {
.bmAttributes = USB_ENDPOINT_XFER_BULK,
.wMaxPacketSize = cpu_to_le16(1024),
};
+EXPORT_SYMBOL(fsg_ss_bulk_out_desc);
-static struct usb_ss_ep_comp_descriptor fsg_ss_bulk_out_comp_desc = {
+struct usb_ss_ep_comp_descriptor fsg_ss_bulk_out_comp_desc = {
.bLength = sizeof(fsg_ss_bulk_in_comp_desc),
.bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
/*.bMaxBurst = DYNAMIC, */
};
+EXPORT_SYMBOL(fsg_ss_bulk_out_comp_desc);
-static struct usb_descriptor_header *fsg_ss_function[] = {
+struct usb_descriptor_header *fsg_ss_function[] = {
(struct usb_descriptor_header *) &fsg_intf_desc,
(struct usb_descriptor_header *) &fsg_ss_bulk_in_desc,
(struct usb_descriptor_header *) &fsg_ss_bulk_in_comp_desc,
@@ -381,17 +161,7 @@ static struct usb_descriptor_header *fsg_ss_function[] = {
(struct usb_descriptor_header *) &fsg_ss_bulk_out_comp_desc,
NULL,
};
-
-/* Static strings, in UTF-8 (for simplicity we use only ASCII characters) */
-static struct usb_string fsg_strings[] = {
- {FSG_STRING_INTERFACE, fsg_string_interface},
- {}
-};
-
-static struct usb_gadget_strings fsg_stringtab = {
- .language = 0x0409, /* en-us */
- .strings = fsg_strings,
-};
+EXPORT_SYMBOL(fsg_ss_function);
/*-------------------------------------------------------------------------*/
@@ -401,7 +171,7 @@ static struct usb_gadget_strings fsg_stringtab = {
* the caller must own fsg->filesem for writing.
*/
-static void fsg_lun_close(struct fsg_lun *curlun)
+void fsg_lun_close(struct fsg_lun *curlun)
{
if (curlun->filp) {
LDBG(curlun, "close backing file\n");
@@ -409,9 +179,9 @@ static void fsg_lun_close(struct fsg_lun *curlun)
curlun->filp = NULL;
}
}
+EXPORT_SYMBOL(fsg_lun_close);
-
-static int fsg_lun_open(struct fsg_lun *curlun, const char *filename)
+int fsg_lun_open(struct fsg_lun *curlun, const char *filename)
{
int ro;
struct file *filp = NULL;
@@ -508,6 +278,7 @@ out:
fput(filp);
return rc;
}
+EXPORT_SYMBOL(fsg_lun_open);
/*-------------------------------------------------------------------------*/
@@ -516,7 +287,7 @@ out:
* Sync the file data, don't bother with the metadata.
* This code was copied from fs/buffer.c:sys_fdatasync().
*/
-static int fsg_lun_fsync_sub(struct fsg_lun *curlun)
+int fsg_lun_fsync_sub(struct fsg_lun *curlun)
{
struct file *filp = curlun->filp;
@@ -524,8 +295,9 @@ static int fsg_lun_fsync_sub(struct fsg_lun *curlun)
return 0;
return vfs_fsync(filp, 1);
}
+EXPORT_SYMBOL(fsg_lun_fsync_sub);
-static void store_cdrom_address(u8 *dest, int msf, u32 addr)
+void store_cdrom_address(u8 *dest, int msf, u32 addr)
{
if (msf) {
/* Convert to Minutes-Seconds-Frames */
@@ -542,34 +314,28 @@ static void store_cdrom_address(u8 *dest, int msf, u32 addr)
put_unaligned_be32(addr, dest);
}
}
-
+EXPORT_SYMBOL(store_cdrom_address);
/*-------------------------------------------------------------------------*/
-static ssize_t ro_show(struct device *dev, struct device_attribute *attr,
- char *buf)
+ssize_t fsg_show_ro(struct fsg_lun *curlun, char *buf)
{
- struct fsg_lun *curlun = fsg_lun_from_dev(dev);
-
return sprintf(buf, "%d\n", fsg_lun_is_open(curlun)
? curlun->ro
: curlun->initially_ro);
}
+EXPORT_SYMBOL(fsg_show_ro);
-static ssize_t nofua_show(struct device *dev, struct device_attribute *attr,
- char *buf)
+ssize_t fsg_show_nofua(struct fsg_lun *curlun, char *buf)
{
- struct fsg_lun *curlun = fsg_lun_from_dev(dev);
-
return sprintf(buf, "%u\n", curlun->nofua);
}
+EXPORT_SYMBOL(fsg_show_nofua);
-static ssize_t file_show(struct device *dev, struct device_attribute *attr,
- char *buf)
+ssize_t fsg_show_file(struct fsg_lun *curlun, struct rw_semaphore *filesem,
+ char *buf)
{
- struct fsg_lun *curlun = fsg_lun_from_dev(dev);
- struct rw_semaphore *filesem = dev_get_drvdata(dev);
char *p;
ssize_t rc;
@@ -591,17 +357,44 @@ static ssize_t file_show(struct device *dev, struct device_attribute *attr,
up_read(filesem);
return rc;
}
+EXPORT_SYMBOL(fsg_show_file);
+ssize_t fsg_show_cdrom(struct fsg_lun *curlun, char *buf)
+{
+ return sprintf(buf, "%u\n", curlun->cdrom);
+}
+EXPORT_SYMBOL(fsg_show_cdrom);
-static ssize_t ro_store(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t count)
+ssize_t fsg_show_removable(struct fsg_lun *curlun, char *buf)
+{
+ return sprintf(buf, "%u\n", curlun->removable);
+}
+EXPORT_SYMBOL(fsg_show_removable);
+
+/*
+ * The caller must hold fsg->filesem for reading when calling this function.
+ */
+static ssize_t _fsg_store_ro(struct fsg_lun *curlun, bool ro)
+{
+ if (fsg_lun_is_open(curlun)) {
+ LDBG(curlun, "read-only status change prevented\n");
+ return -EBUSY;
+ }
+
+ curlun->ro = ro;
+ curlun->initially_ro = ro;
+ LDBG(curlun, "read-only status set to %d\n", curlun->ro);
+
+ return 0;
+}
+
+ssize_t fsg_store_ro(struct fsg_lun *curlun, struct rw_semaphore *filesem,
+ const char *buf, size_t count)
{
ssize_t rc;
- struct fsg_lun *curlun = fsg_lun_from_dev(dev);
- struct rw_semaphore *filesem = dev_get_drvdata(dev);
- unsigned ro;
+ bool ro;
- rc = kstrtouint(buf, 2, &ro);
+ rc = strtobool(buf, &ro);
if (rc)
return rc;
@@ -610,27 +403,21 @@ static ssize_t ro_store(struct device *dev, struct device_attribute *attr,
* backing file is closed.
*/
down_read(filesem);
- if (fsg_lun_is_open(curlun)) {
- LDBG(curlun, "read-only status change prevented\n");
- rc = -EBUSY;
- } else {
- curlun->ro = ro;
- curlun->initially_ro = ro;
- LDBG(curlun, "read-only status set to %d\n", curlun->ro);
+ rc = _fsg_store_ro(curlun, ro);
+ if (!rc)
rc = count;
- }
up_read(filesem);
+
return rc;
}
+EXPORT_SYMBOL(fsg_store_ro);
-static ssize_t nofua_store(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t count)
+ssize_t fsg_store_nofua(struct fsg_lun *curlun, const char *buf, size_t count)
{
- struct fsg_lun *curlun = fsg_lun_from_dev(dev);
- unsigned nofua;
+ bool nofua;
int ret;
- ret = kstrtouint(buf, 2, &nofua);
+ ret = strtobool(buf, &nofua);
if (ret)
return ret;
@@ -642,12 +429,11 @@ static ssize_t nofua_store(struct device *dev, struct device_attribute *attr,
return count;
}
+EXPORT_SYMBOL(fsg_store_nofua);
-static ssize_t file_store(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t count)
+ssize_t fsg_store_file(struct fsg_lun *curlun, struct rw_semaphore *filesem,
+ const char *buf, size_t count)
{
- struct fsg_lun *curlun = fsg_lun_from_dev(dev);
- struct rw_semaphore *filesem = dev_get_drvdata(dev);
int rc = 0;
if (curlun->prevent_medium_removal && fsg_lun_is_open(curlun)) {
@@ -674,3 +460,45 @@ static ssize_t file_store(struct device *dev, struct device_attribute *attr,
up_write(filesem);
return (rc < 0 ? rc : count);
}
+EXPORT_SYMBOL(fsg_store_file);
+
+ssize_t fsg_store_cdrom(struct fsg_lun *curlun, struct rw_semaphore *filesem,
+ const char *buf, size_t count)
+{
+ bool cdrom;
+ int ret;
+
+ ret = strtobool(buf, &cdrom);
+ if (ret)
+ return ret;
+
+ down_read(filesem);
+ ret = cdrom ? _fsg_store_ro(curlun, true) : 0;
+
+ if (!ret) {
+ curlun->cdrom = cdrom;
+ ret = count;
+ }
+ up_read(filesem);
+
+ return ret;
+}
+EXPORT_SYMBOL(fsg_store_cdrom);
+
+ssize_t fsg_store_removable(struct fsg_lun *curlun, const char *buf,
+ size_t count)
+{
+ bool removable;
+ int ret;
+
+ ret = strtobool(buf, &removable);
+ if (ret)
+ return ret;
+
+ curlun->removable = removable;
+
+ return count;
+}
+EXPORT_SYMBOL(fsg_store_removable);
+
+MODULE_LICENSE("GPL");
diff --git a/drivers/usb/gadget/storage_common.h b/drivers/usb/gadget/storage_common.h
new file mode 100644
index 000000000000..c74c2fdbd56e
--- /dev/null
+++ b/drivers/usb/gadget/storage_common.h
@@ -0,0 +1,229 @@
+#ifndef USB_STORAGE_COMMON_H
+#define USB_STORAGE_COMMON_H
+
+#include <linux/device.h>
+#include <linux/usb/storage.h>
+#include <scsi/scsi.h>
+#include <asm/unaligned.h>
+
+#ifndef DEBUG
+#undef VERBOSE_DEBUG
+#undef DUMP_MSGS
+#endif /* !DEBUG */
+
+#ifdef VERBOSE_DEBUG
+#define VLDBG LDBG
+#else
+#define VLDBG(lun, fmt, args...) do { } while (0)
+#endif /* VERBOSE_DEBUG */
+
+#define _LMSG(func, lun, fmt, args...) \
+ do { \
+ if ((lun)->name_pfx && *(lun)->name_pfx) \
+ func("%s/%s: " fmt, *(lun)->name_pfx, \
+ (lun)->name, ## args); \
+ else \
+ func("%s: " fmt, (lun)->name, ## args); \
+ } while (0)
+
+#define LDBG(lun, fmt, args...) _LMSG(pr_debug, lun, fmt, ## args)
+#define LERROR(lun, fmt, args...) _LMSG(pr_err, lun, fmt, ## args)
+#define LWARN(lun, fmt, args...) _LMSG(pr_warn, lun, fmt, ## args)
+#define LINFO(lun, fmt, args...) _LMSG(pr_info, lun, fmt, ## args)
+
+
+#ifdef DUMP_MSGS
+
+# define dump_msg(fsg, /* const char * */ label, \
+ /* const u8 * */ buf, /* unsigned */ length) \
+do { \
+ if (length < 512) { \
+ DBG(fsg, "%s, length %u:\n", label, length); \
+ print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, \
+ 16, 1, buf, length, 0); \
+ } \
+} while (0)
+
+# define dump_cdb(fsg) do { } while (0)
+
+#else
+
+# define dump_msg(fsg, /* const char * */ label, \
+ /* const u8 * */ buf, /* unsigned */ length) do { } while (0)
+
+# ifdef VERBOSE_DEBUG
+
+# define dump_cdb(fsg) \
+ print_hex_dump(KERN_DEBUG, "SCSI CDB: ", DUMP_PREFIX_NONE, \
+ 16, 1, (fsg)->cmnd, (fsg)->cmnd_size, 0) \
+
+# else
+
+# define dump_cdb(fsg) do { } while (0)
+
+# endif /* VERBOSE_DEBUG */
+
+#endif /* DUMP_MSGS */
+
+/* Length of a SCSI Command Data Block */
+#define MAX_COMMAND_SIZE 16
+
+/* SCSI Sense Key/Additional Sense Code/ASC Qualifier values */
+#define SS_NO_SENSE 0
+#define SS_COMMUNICATION_FAILURE 0x040800
+#define SS_INVALID_COMMAND 0x052000
+#define SS_INVALID_FIELD_IN_CDB 0x052400
+#define SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE 0x052100
+#define SS_LOGICAL_UNIT_NOT_SUPPORTED 0x052500
+#define SS_MEDIUM_NOT_PRESENT 0x023a00
+#define SS_MEDIUM_REMOVAL_PREVENTED 0x055302
+#define SS_NOT_READY_TO_READY_TRANSITION 0x062800
+#define SS_RESET_OCCURRED 0x062900
+#define SS_SAVING_PARAMETERS_NOT_SUPPORTED 0x053900
+#define SS_UNRECOVERED_READ_ERROR 0x031100
+#define SS_WRITE_ERROR 0x030c02
+#define SS_WRITE_PROTECTED 0x072700
+
+#define SK(x) ((u8) ((x) >> 16)) /* Sense Key byte, etc. */
+#define ASC(x) ((u8) ((x) >> 8))
+#define ASCQ(x) ((u8) (x))
+
+struct fsg_lun {
+ struct file *filp;
+ loff_t file_length;
+ loff_t num_sectors;
+
+ unsigned int initially_ro:1;
+ unsigned int ro:1;
+ unsigned int removable:1;
+ unsigned int cdrom:1;
+ unsigned int prevent_medium_removal:1;
+ unsigned int registered:1;
+ unsigned int info_valid:1;
+ unsigned int nofua:1;
+
+ u32 sense_data;
+ u32 sense_data_info;
+ u32 unit_attention_data;
+
+ unsigned int blkbits; /* Bits of logical block size
+ of bound block device */
+ unsigned int blksize; /* logical block size of bound block device */
+ struct device dev;
+ const char *name; /* "lun.name" */
+ const char **name_pfx; /* "function.name" */
+};
+
+static inline bool fsg_lun_is_open(struct fsg_lun *curlun)
+{
+ return curlun->filp != NULL;
+}
+
+/* Big enough to hold our biggest descriptor */
+#define EP0_BUFSIZE 256
+#define DELAYED_STATUS (EP0_BUFSIZE + 999) /* An impossibly large value */
+
+/* Default size of buffer length. */
+#define FSG_BUFLEN ((u32)16384)
+
+/* Maximal number of LUNs supported in mass storage function */
+#define FSG_MAX_LUNS 8
+
+enum fsg_buffer_state {
+ BUF_STATE_EMPTY = 0,
+ BUF_STATE_FULL,
+ BUF_STATE_BUSY
+};
+
+struct fsg_buffhd {
+ void *buf;
+ enum fsg_buffer_state state;
+ struct fsg_buffhd *next;
+
+ /*
+ * The NetChip 2280 is faster, and handles some protocol faults
+ * better, if we don't submit any short bulk-out read requests.
+ * So we will record the intended request length here.
+ */
+ unsigned int bulk_out_intended_length;
+
+ struct usb_request *inreq;
+ int inreq_busy;
+ struct usb_request *outreq;
+ int outreq_busy;
+};
+
+enum fsg_state {
+ /* This one isn't used anywhere */
+ FSG_STATE_COMMAND_PHASE = -10,
+ FSG_STATE_DATA_PHASE,
+ FSG_STATE_STATUS_PHASE,
+
+ FSG_STATE_IDLE = 0,
+ FSG_STATE_ABORT_BULK_OUT,
+ FSG_STATE_RESET,
+ FSG_STATE_INTERFACE_CHANGE,
+ FSG_STATE_CONFIG_CHANGE,
+ FSG_STATE_DISCONNECT,
+ FSG_STATE_EXIT,
+ FSG_STATE_TERMINATED
+};
+
+enum data_direction {
+ DATA_DIR_UNKNOWN = 0,
+ DATA_DIR_FROM_HOST,
+ DATA_DIR_TO_HOST,
+ DATA_DIR_NONE
+};
+
+static inline u32 get_unaligned_be24(u8 *buf)
+{
+ return 0xffffff & (u32) get_unaligned_be32(buf - 1);
+}
+
+static inline struct fsg_lun *fsg_lun_from_dev(struct device *dev)
+{
+ return container_of(dev, struct fsg_lun, dev);
+}
+
+enum {
+ FSG_STRING_INTERFACE
+};
+
+extern struct usb_interface_descriptor fsg_intf_desc;
+
+extern struct usb_endpoint_descriptor fsg_fs_bulk_in_desc;
+extern struct usb_endpoint_descriptor fsg_fs_bulk_out_desc;
+extern struct usb_descriptor_header *fsg_fs_function[];
+
+extern struct usb_endpoint_descriptor fsg_hs_bulk_in_desc;
+extern struct usb_endpoint_descriptor fsg_hs_bulk_out_desc;
+extern struct usb_descriptor_header *fsg_hs_function[];
+
+extern struct usb_endpoint_descriptor fsg_ss_bulk_in_desc;
+extern struct usb_ss_ep_comp_descriptor fsg_ss_bulk_in_comp_desc;
+extern struct usb_endpoint_descriptor fsg_ss_bulk_out_desc;
+extern struct usb_ss_ep_comp_descriptor fsg_ss_bulk_out_comp_desc;
+extern struct usb_descriptor_header *fsg_ss_function[];
+
+void fsg_lun_close(struct fsg_lun *curlun);
+int fsg_lun_open(struct fsg_lun *curlun, const char *filename);
+int fsg_lun_fsync_sub(struct fsg_lun *curlun);
+void store_cdrom_address(u8 *dest, int msf, u32 addr);
+ssize_t fsg_show_ro(struct fsg_lun *curlun, char *buf);
+ssize_t fsg_show_nofua(struct fsg_lun *curlun, char *buf);
+ssize_t fsg_show_file(struct fsg_lun *curlun, struct rw_semaphore *filesem,
+ char *buf);
+ssize_t fsg_show_cdrom(struct fsg_lun *curlun, char *buf);
+ssize_t fsg_show_removable(struct fsg_lun *curlun, char *buf);
+ssize_t fsg_store_ro(struct fsg_lun *curlun, struct rw_semaphore *filesem,
+ const char *buf, size_t count);
+ssize_t fsg_store_nofua(struct fsg_lun *curlun, const char *buf, size_t count);
+ssize_t fsg_store_file(struct fsg_lun *curlun, struct rw_semaphore *filesem,
+ const char *buf, size_t count);
+ssize_t fsg_store_cdrom(struct fsg_lun *curlun, struct rw_semaphore *filesem,
+ const char *buf, size_t count);
+ssize_t fsg_store_removable(struct fsg_lun *curlun, const char *buf,
+ size_t count);
+
+#endif /* USB_STORAGE_COMMON_H */
diff --git a/drivers/usb/gadget/tcm_usb_gadget.c b/drivers/usb/gadget/tcm_usb_gadget.c
index 0ff33396eef3..eccea1df702d 100644
--- a/drivers/usb/gadget/tcm_usb_gadget.c
+++ b/drivers/usb/gadget/tcm_usb_gadget.c
@@ -472,7 +472,7 @@ static int usbg_bot_setup(struct usb_function *f,
bot_enqueue_cmd_cbw(fu);
return 0;
break;
- };
+ }
return -ENOTSUPP;
}
@@ -617,7 +617,7 @@ static void uasp_status_data_cmpl(struct usb_ep *ep, struct usb_request *req)
default:
BUG();
- };
+ }
return;
cleanup:
diff --git a/drivers/usb/gadget/udc-core.c b/drivers/usb/gadget/udc-core.c
index 59891b1c48fc..27768a7d986a 100644
--- a/drivers/usb/gadget/udc-core.c
+++ b/drivers/usb/gadget/udc-core.c
@@ -356,7 +356,8 @@ static int udc_bind_to_driver(struct usb_udc *udc, struct usb_gadget_driver *dri
kobject_uevent(&udc->dev.kobj, KOBJ_CHANGE);
return 0;
err1:
- dev_err(&udc->dev, "failed to start %s: %d\n",
+ if (ret != -EISNAM)
+ dev_err(&udc->dev, "failed to start %s: %d\n",
udc->driver->function, ret);
udc->driver = NULL;
udc->dev.driver = NULL;
diff --git a/drivers/usb/gadget/zero.c b/drivers/usb/gadget/zero.c
index 0deb9d6cde26..0dd07ae1555d 100644
--- a/drivers/usb/gadget/zero.c
+++ b/drivers/usb/gadget/zero.c
@@ -95,6 +95,18 @@ unsigned autoresume = DEFAULT_AUTORESUME;
module_param(autoresume, uint, S_IRUGO);
MODULE_PARM_DESC(autoresume, "zero, or seconds before remote wakeup");
+/* Maximum Autoresume time */
+unsigned max_autoresume;
+module_param(max_autoresume, uint, S_IRUGO);
+MODULE_PARM_DESC(max_autoresume, "maximum seconds before remote wakeup");
+
+/* Interval between two remote wakeups */
+unsigned autoresume_interval_ms;
+module_param(autoresume_interval_ms, uint, S_IRUGO);
+MODULE_PARM_DESC(autoresume_interval_ms,
+ "milliseconds to increase successive wakeup delays");
+
+static unsigned autoresume_step_ms;
/*-------------------------------------------------------------------------*/
static struct usb_device_descriptor device_desc = {
@@ -183,8 +195,16 @@ static void zero_suspend(struct usb_composite_dev *cdev)
return;
if (autoresume) {
- mod_timer(&autoresume_timer, jiffies + (HZ * autoresume));
- DBG(cdev, "suspend, wakeup in %d seconds\n", autoresume);
+ if (max_autoresume &&
+ (autoresume_step_ms > max_autoresume * 1000))
+ autoresume_step_ms = autoresume * 1000;
+
+ mod_timer(&autoresume_timer, jiffies +
+ msecs_to_jiffies(autoresume_step_ms));
+ DBG(cdev, "suspend, wakeup in %d milliseconds\n",
+ autoresume_step_ms);
+
+ autoresume_step_ms += autoresume_interval_ms;
} else
DBG(cdev, "%s\n", __func__);
}
@@ -316,6 +336,7 @@ static int __init zero_bind(struct usb_composite_dev *cdev)
if (autoresume) {
sourcesink_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP;
loopback_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP;
+ autoresume_step_ms = autoresume * 1000;
}
/* support OTG systems */