[PATCH] USB: drivers/usb/storage/libusual
This patch adds a shim driver libusual, which routes devices between
usb-storage and ub according to the common table, based on unusual_devs.h.
The help and example syntax is in Kconfig.
Signed-off-by: Pete Zaitcev <zaitcev@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig
index 7b1cd93..c4b9d2a 100644
--- a/drivers/block/Kconfig
+++ b/drivers/block/Kconfig
@@ -358,7 +358,8 @@
This driver supports certain USB attached storage devices
such as flash keys.
- Warning: Enabling this cripples the usb-storage driver.
+ If you enable this driver, it is recommended to avoid conflicts
+ with usb-storage by enabling USB_LIBUSUAL.
If unsure, say N.
diff --git a/drivers/block/ub.c b/drivers/block/ub.c
index bfb23d5..06d741d 100644
--- a/drivers/block/ub.c
+++ b/drivers/block/ub.c
@@ -29,6 +29,7 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/usb.h>
+#include <linux/usb_usual.h>
#include <linux/blkdev.h>
#include <linux/devfs_fs_kernel.h>
#include <linux/timer.h>
@@ -107,16 +108,6 @@
*/
/*
- * Definitions which have to be scattered once we understand the layout better.
- */
-
-/* Transport (despite PR in the name) */
-#define US_PR_BULK 0x50 /* bulk only */
-
-/* Protocol */
-#define US_SC_SCSI 0x06 /* Transparent */
-
-/*
* This many LUNs per USB device.
* Every one of them takes a host, see UB_MAX_HOSTS.
*/
@@ -422,13 +413,18 @@
/*
*/
+#ifdef CONFIG_USB_LIBUSUAL
+
+#define ub_usb_ids storage_usb_ids
+#else
+
static struct usb_device_id ub_usb_ids[] = {
- // { USB_DEVICE_VER(0x0781, 0x0002, 0x0009, 0x0009) }, /* SDDR-31 */
{ USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, US_SC_SCSI, US_PR_BULK) },
{ }
};
MODULE_DEVICE_TABLE(usb, ub_usb_ids);
+#endif /* CONFIG_USB_LIBUSUAL */
/*
* Find me a way to identify "next free minor" for add_disk(),
@@ -2172,6 +2168,9 @@
int rc;
int i;
+ if (usb_usual_check_type(dev_id, USB_US_TYPE_UB))
+ return -ENXIO;
+
rc = -ENOMEM;
if ((sc = kmalloc(sizeof(struct ub_dev), GFP_KERNEL)) == NULL)
goto err_core;
@@ -2479,6 +2478,7 @@
if ((rc = usb_register(&ub_driver)) != 0)
goto err_register;
+ usb_usual_set_present(USB_US_TYPE_UB);
return 0;
err_register:
@@ -2494,6 +2494,7 @@
devfs_remove(DEVFS_NAME);
unregister_blkdev(UB_MAJOR, DRV_NAME);
+ usb_usual_clear_present(USB_US_TYPE_UB);
}
module_init(ub_init);
diff --git a/drivers/usb/Makefile b/drivers/usb/Makefile
index a50c2bc..3639c3f 100644
--- a/drivers/usb/Makefile
+++ b/drivers/usb/Makefile
@@ -22,6 +22,7 @@
obj-$(CONFIG_USB_PRINTER) += class/
obj-$(CONFIG_USB_STORAGE) += storage/
+obj-$(CONFIG_USB) += storage/
obj-$(CONFIG_USB_AIPTEK) += input/
obj-$(CONFIG_USB_ATI_REMOTE) += input/
diff --git a/drivers/usb/storage/Kconfig b/drivers/usb/storage/Kconfig
index c41d64d..bdfcb95 100644
--- a/drivers/usb/storage/Kconfig
+++ b/drivers/usb/storage/Kconfig
@@ -124,3 +124,17 @@
hard drive's as an input device. An action can be associated with
this input in any keybinding software. (e.g. gnome's keyboard short-
cuts)
+
+config USB_LIBUSUAL
+ bool "The shared table of common (or usual) storage devices"
+ depends on USB
+ help
+ This module contains a table of common (or usual) devices
+ for usb-storage and ub drivers, and allows to switch binding
+ of these devices without rebuilding modules.
+
+ Typical syntax of /etc/modprobe.conf is:
+
+ options libusual bias="ub"
+
+ If unsure, say N.
diff --git a/drivers/usb/storage/Makefile b/drivers/usb/storage/Makefile
index 44ab8f9..2d416e9 100644
--- a/drivers/usb/storage/Makefile
+++ b/drivers/usb/storage/Makefile
@@ -22,3 +22,7 @@
usb-storage-objs := scsiglue.o protocol.o transport.o usb.o \
initializers.o $(usb-storage-obj-y)
+
+ifneq ($(CONFIG_USB_LIBUSUAL),)
+ obj-$(CONFIG_USB) += libusual.o
+endif
diff --git a/drivers/usb/storage/libusual.c b/drivers/usb/storage/libusual.c
new file mode 100644
index 0000000..61f73d8
--- /dev/null
+++ b/drivers/usb/storage/libusual.c
@@ -0,0 +1,266 @@
+/*
+ * libusual
+ *
+ * The libusual contains the table of devices common for ub and usb-storage.
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+#include <linux/usb_usual.h>
+#include <linux/vmalloc.h>
+
+/*
+ */
+#define USU_MOD_FL_THREAD 1 /* Thread is running */
+#define USU_MOD_FL_PRESENT 2 /* The module is loaded */
+
+struct mod_status {
+ unsigned long fls;
+};
+
+static struct mod_status stat[3];
+static DEFINE_SPINLOCK(usu_lock);
+
+/*
+ */
+#define USB_US_DEFAULT_BIAS USB_US_TYPE_STOR
+
+#define BIAS_NAME_SIZE (sizeof("usb-storage"))
+static char bias[BIAS_NAME_SIZE];
+static int usb_usual_bias;
+static const char *bias_names[3] = { "none", "usb-storage", "ub" };
+
+static DECLARE_MUTEX_LOCKED(usu_init_notify);
+static DECLARE_COMPLETION(usu_end_notify);
+static atomic_t total_threads = ATOMIC_INIT(0);
+
+static int usu_probe_thread(void *arg);
+static int parse_bias(const char *bias_s);
+
+/*
+ * The table.
+ */
+#define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \
+ vendorName, productName,useProtocol, useTransport, \
+ initFunction, flags) \
+{ USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin,bcdDeviceMax), \
+ .driver_info = (flags)|(USB_US_TYPE_STOR<<24) }
+
+#define USUAL_DEV(useProto, useTrans, useType) \
+{ USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, useProto, useTrans), \
+ .driver_info = ((useType)<<24) }
+
+struct usb_device_id storage_usb_ids [] = {
+# include "unusual_devs.h"
+ { } /* Terminating entry */
+};
+
+#undef USUAL_DEV
+#undef UNUSUAL_DEV
+
+MODULE_DEVICE_TABLE(usb, storage_usb_ids);
+EXPORT_SYMBOL_GPL(storage_usb_ids);
+
+/*
+ * @type: the module type as an integer
+ */
+void usb_usual_set_present(int type)
+{
+ struct mod_status *st;
+ unsigned long flags;
+
+ if (type <= 0 || type >= 3)
+ return;
+ st = &stat[type];
+ spin_lock_irqsave(&usu_lock, flags);
+ st->fls |= USU_MOD_FL_PRESENT;
+ spin_unlock_irqrestore(&usu_lock, flags);
+}
+EXPORT_SYMBOL_GPL(usb_usual_set_present);
+
+void usb_usual_clear_present(int type)
+{
+ struct mod_status *st;
+ unsigned long flags;
+
+ if (type <= 0 || type >= 3)
+ return;
+ st = &stat[type];
+ spin_lock_irqsave(&usu_lock, flags);
+ st->fls &= ~USU_MOD_FL_PRESENT;
+ spin_unlock_irqrestore(&usu_lock, flags);
+}
+EXPORT_SYMBOL_GPL(usb_usual_clear_present);
+
+/*
+ * Match the calling driver type against the table.
+ * Returns: 0 if the device matches.
+ */
+int usb_usual_check_type(const struct usb_device_id *id, int caller_type)
+{
+ int id_type = USB_US_TYPE(id->driver_info);
+
+ if (caller_type <= 0 || caller_type >= 3)
+ return -EINVAL;
+
+ /* Drivers grab fixed assignment devices */
+ if (id_type == caller_type)
+ return 0;
+ /* Drivers grab devices biased to them */
+ if (id_type == USB_US_TYPE_NONE && caller_type == usb_usual_bias)
+ return 0;
+ return -ENODEV;
+}
+EXPORT_SYMBOL_GPL(usb_usual_check_type);
+
+/*
+ */
+static int usu_probe(struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ int type;
+ int rc;
+ unsigned long flags;
+
+ type = USB_US_TYPE(id->driver_info);
+ if (type == 0)
+ type = usb_usual_bias;
+
+ spin_lock_irqsave(&usu_lock, flags);
+ if ((stat[type].fls & (USU_MOD_FL_THREAD|USU_MOD_FL_PRESENT)) != 0) {
+ spin_unlock_irqrestore(&usu_lock, flags);
+ return -ENXIO;
+ }
+ stat[type].fls |= USU_MOD_FL_THREAD;
+ spin_unlock_irqrestore(&usu_lock, flags);
+
+ rc = kernel_thread(usu_probe_thread, (void*)type, CLONE_VM);
+ if (rc < 0) {
+ printk(KERN_WARNING "libusual: "
+ "Unable to start the thread for %s: %d\n",
+ bias_names[type], rc);
+ spin_lock_irqsave(&usu_lock, flags);
+ stat[type].fls &= ~USU_MOD_FL_THREAD;
+ spin_unlock_irqrestore(&usu_lock, flags);
+ return rc; /* Not being -ENXIO causes a message printed */
+ }
+ atomic_inc(&total_threads);
+
+ return -ENXIO;
+}
+
+static void usu_disconnect(struct usb_interface *intf)
+{
+ ; /* We should not be here. */
+}
+
+static struct usb_driver usu_driver = {
+ .owner = THIS_MODULE,
+ .name = "libusual",
+ .probe = usu_probe,
+ .disconnect = usu_disconnect,
+ .id_table = storage_usb_ids,
+};
+
+/*
+ * A whole new thread for a purpose of request_module seems quite stupid.
+ * The request_module forks once inside again. However, if we attempt
+ * to load a storage module from our own modprobe thread, that module
+ * references our symbols, which cannot be resolved until our module is
+ * initialized. I wish there was a way to wait for the end of initialization.
+ * The module notifier reports MODULE_STATE_COMING only.
+ * So, we wait until module->init ends as the next best thing.
+ */
+static int usu_probe_thread(void *arg)
+{
+ int type = (unsigned long) arg;
+ struct mod_status *st = &stat[type];
+ int rc;
+ unsigned long flags;
+
+ daemonize("libusual_%d", type); /* "usb-storage" is kinda too long */
+
+ /* A completion does not work here because it's counted. */
+ down(&usu_init_notify);
+ up(&usu_init_notify);
+
+ rc = request_module(bias_names[type]);
+ spin_lock_irqsave(&usu_lock, flags);
+ if (rc == 0 && (st->fls & USU_MOD_FL_PRESENT) == 0) {
+ /*
+ * This should not happen, but let us keep tabs on it.
+ */
+ printk(KERN_NOTICE "libusual: "
+ "modprobe for %s succeeded, but module is not present\n",
+ bias_names[type]);
+ }
+ st->fls &= ~USU_MOD_FL_THREAD;
+ spin_unlock_irqrestore(&usu_lock, flags);
+
+ complete_and_exit(&usu_end_notify, 0);
+}
+
+/*
+ */
+static int __init usb_usual_init(void)
+{
+ int rc;
+
+ bias[BIAS_NAME_SIZE-1] = 0;
+ usb_usual_bias = parse_bias(bias);
+
+ rc = usb_register(&usu_driver);
+ up(&usu_init_notify);
+ return rc;
+}
+
+static void __exit usb_usual_exit(void)
+{
+ /*
+ * We do not check for any drivers present, because
+ * they keep us pinned with symbol references.
+ */
+
+ usb_deregister(&usu_driver);
+
+ while (atomic_read(&total_threads) > 0) {
+ wait_for_completion(&usu_end_notify);
+ atomic_dec(&total_threads);
+ }
+}
+
+/*
+ * Validate and accept the bias parameter.
+ * Maybe make an sysfs method later. XXX
+ */
+static int parse_bias(const char *bias_s)
+{
+ int i;
+ int bias_n = 0;
+
+ if (bias_s[0] == 0 || bias_s[0] == ' ') {
+ bias_n = USB_US_DEFAULT_BIAS;
+ } else {
+ for (i = 1; i < 3; i++) {
+ if (strcmp(bias_s, bias_names[i]) == 0) {
+ bias_n = i;
+ break;
+ }
+ }
+ if (bias_n == 0) {
+ bias_n = USB_US_DEFAULT_BIAS;
+ printk(KERN_INFO
+ "libusual: unknown bias \"%s\", using \"%s\"\n",
+ bias_s, bias_names[bias_n]);
+ }
+ }
+ return bias_n;
+}
+
+module_init(usb_usual_init);
+module_exit(usb_usual_exit);
+
+module_param_string(bias, bias, BIAS_NAME_SIZE, S_IRUGO|S_IWUSR);
+MODULE_PARM_DESC(bias, "Bias to usb-storage or ub");
+
+MODULE_LICENSE("GPL");
diff --git a/drivers/usb/storage/protocol.h b/drivers/usb/storage/protocol.h
index 02bff01..845bed4 100644
--- a/drivers/usb/storage/protocol.h
+++ b/drivers/usb/storage/protocol.h
@@ -41,20 +41,6 @@
#ifndef _PROTOCOL_H_
#define _PROTOCOL_H_
-/* Sub Classes */
-
-#define US_SC_RBC 0x01 /* Typically, flash devices */
-#define US_SC_8020 0x02 /* CD-ROM */
-#define US_SC_QIC 0x03 /* QIC-157 Tapes */
-#define US_SC_UFI 0x04 /* Floppy */
-#define US_SC_8070 0x05 /* Removable media */
-#define US_SC_SCSI 0x06 /* Transparent */
-#define US_SC_ISD200 0x07 /* ISD200 ATA */
-#define US_SC_MIN US_SC_RBC
-#define US_SC_MAX US_SC_ISD200
-
-#define US_SC_DEVICE 0xff /* Use device's value */
-
/* Protocol handling routines */
extern void usb_stor_ATAPI_command(struct scsi_cmnd*, struct us_data*);
extern void usb_stor_qic157_command(struct scsi_cmnd*, struct us_data*);
diff --git a/drivers/usb/storage/transport.h b/drivers/usb/storage/transport.h
index 0a362cc..633a715 100644
--- a/drivers/usb/storage/transport.h
+++ b/drivers/usb/storage/transport.h
@@ -41,39 +41,8 @@
#ifndef _TRANSPORT_H_
#define _TRANSPORT_H_
-#include <linux/config.h>
#include <linux/blkdev.h>
-/* Protocols */
-
-#define US_PR_CBI 0x00 /* Control/Bulk/Interrupt */
-#define US_PR_CB 0x01 /* Control/Bulk w/o interrupt */
-#define US_PR_BULK 0x50 /* bulk only */
-#ifdef CONFIG_USB_STORAGE_USBAT
-#define US_PR_USBAT 0x80 /* SCM-ATAPI bridge */
-#endif
-#ifdef CONFIG_USB_STORAGE_SDDR09
-#define US_PR_EUSB_SDDR09 0x81 /* SCM-SCSI bridge for SDDR-09 */
-#endif
-#ifdef CONFIG_USB_STORAGE_SDDR55
-#define US_PR_SDDR55 0x82 /* SDDR-55 (made up) */
-#endif
-#define US_PR_DPCM_USB 0xf0 /* Combination CB/SDDR09 */
-
-#ifdef CONFIG_USB_STORAGE_FREECOM
-#define US_PR_FREECOM 0xf1 /* Freecom */
-#endif
-
-#ifdef CONFIG_USB_STORAGE_DATAFAB
-#define US_PR_DATAFAB 0xf2 /* Datafab chipsets */
-#endif
-
-#ifdef CONFIG_USB_STORAGE_JUMPSHOT
-#define US_PR_JUMPSHOT 0xf3 /* Lexar Jumpshot */
-#endif
-
-#define US_PR_DEVICE 0xff /* Use device's value */
-
/*
* Bulk only data structures
*/
diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h
index f5f47a3..76904ad 100644
--- a/drivers/usb/storage/unusual_devs.h
+++ b/drivers/usb/storage/unusual_devs.h
@@ -1134,3 +1134,27 @@
US_SC_SCSI, US_PR_SDDR55, NULL,
US_FL_SINGLE_LUN),
#endif
+
+/* Control/Bulk transport for all SubClass values */
+USUAL_DEV(US_SC_RBC, US_PR_CB, USB_US_TYPE_STOR),
+USUAL_DEV(US_SC_8020, US_PR_CB, USB_US_TYPE_STOR),
+USUAL_DEV(US_SC_QIC, US_PR_CB, USB_US_TYPE_STOR),
+USUAL_DEV(US_SC_UFI, US_PR_CB, USB_US_TYPE_STOR),
+USUAL_DEV(US_SC_8070, US_PR_CB, USB_US_TYPE_STOR),
+USUAL_DEV(US_SC_SCSI, US_PR_CB, USB_US_TYPE_STOR),
+
+/* Control/Bulk/Interrupt transport for all SubClass values */
+USUAL_DEV(US_SC_RBC, US_PR_CBI, USB_US_TYPE_STOR),
+USUAL_DEV(US_SC_8020, US_PR_CBI, USB_US_TYPE_STOR),
+USUAL_DEV(US_SC_QIC, US_PR_CBI, USB_US_TYPE_STOR),
+USUAL_DEV(US_SC_UFI, US_PR_CBI, USB_US_TYPE_STOR),
+USUAL_DEV(US_SC_8070, US_PR_CBI, USB_US_TYPE_STOR),
+USUAL_DEV(US_SC_SCSI, US_PR_CBI, USB_US_TYPE_STOR),
+
+/* Bulk-only transport for all SubClass values */
+USUAL_DEV(US_SC_RBC, US_PR_BULK, USB_US_TYPE_STOR),
+USUAL_DEV(US_SC_8020, US_PR_BULK, USB_US_TYPE_STOR),
+USUAL_DEV(US_SC_QIC, US_PR_BULK, USB_US_TYPE_STOR),
+USUAL_DEV(US_SC_UFI, US_PR_BULK, USB_US_TYPE_STOR),
+USUAL_DEV(US_SC_8070, US_PR_BULK, USB_US_TYPE_STOR),
+USUAL_DEV(US_SC_SCSI, US_PR_BULK, 0),
diff --git a/drivers/usb/storage/usb.c b/drivers/usb/storage/usb.c
index 3847ebe..c8375aa 100644
--- a/drivers/usb/storage/usb.c
+++ b/drivers/usb/storage/usb.c
@@ -112,49 +112,33 @@
static DECLARE_COMPLETION(threads_gone);
-/* The entries in this table, except for final ones here
- * (USB_MASS_STORAGE_CLASS and the empty entry), correspond,
- * line for line with the entries of us_unsuaul_dev_list[].
+/*
+ * The entries in this table correspond, line for line,
+ * with the entries of us_unusual_dev_list[].
*/
+#ifndef CONFIG_USB_LIBUSUAL
#define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \
vendorName, productName,useProtocol, useTransport, \
initFunction, flags) \
-{ USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin,bcdDeviceMax) }
+{ USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin,bcdDeviceMax), \
+ .driver_info = (flags)|(USB_US_TYPE_STOR<<24) }
+
+#define USUAL_DEV(useProto, useTrans, useType) \
+{ USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, useProto, useTrans), \
+ .driver_info = (USB_US_TYPE_STOR<<24) }
static struct usb_device_id storage_usb_ids [] = {
# include "unusual_devs.h"
#undef UNUSUAL_DEV
- /* Control/Bulk transport for all SubClass values */
- { USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, US_SC_RBC, US_PR_CB) },
- { USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, US_SC_8020, US_PR_CB) },
- { USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, US_SC_QIC, US_PR_CB) },
- { USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, US_SC_UFI, US_PR_CB) },
- { USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, US_SC_8070, US_PR_CB) },
- { USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, US_SC_SCSI, US_PR_CB) },
-
- /* Control/Bulk/Interrupt transport for all SubClass values */
- { USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, US_SC_RBC, US_PR_CBI) },
- { USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, US_SC_8020, US_PR_CBI) },
- { USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, US_SC_QIC, US_PR_CBI) },
- { USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, US_SC_UFI, US_PR_CBI) },
- { USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, US_SC_8070, US_PR_CBI) },
- { USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, US_SC_SCSI, US_PR_CBI) },
-
- /* Bulk-only transport for all SubClass values */
- { USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, US_SC_RBC, US_PR_BULK) },
- { USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, US_SC_8020, US_PR_BULK) },
- { USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, US_SC_QIC, US_PR_BULK) },
- { USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, US_SC_UFI, US_PR_BULK) },
- { USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, US_SC_8070, US_PR_BULK) },
- { USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, US_SC_SCSI, US_PR_BULK) },
-
+#undef USUAL_DEV
/* Terminating entry */
{ }
};
MODULE_DEVICE_TABLE (usb, storage_usb_ids);
+#endif /* CONFIG_USB_LIBUSUAL */
/* This is the list of devices we recognize, along with their flag data */
@@ -167,7 +151,6 @@
* are free to use as many characters as you like.
*/
-#undef UNUSUAL_DEV
#define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \
vendor_name, product_name, use_protocol, use_transport, \
init_function, Flags) \
@@ -177,53 +160,18 @@
.useProtocol = use_protocol, \
.useTransport = use_transport, \
.initFunction = init_function, \
- .flags = Flags, \
+}
+
+#define USUAL_DEV(use_protocol, use_transport, use_type) \
+{ \
+ .useProtocol = use_protocol, \
+ .useTransport = use_transport, \
}
static struct us_unusual_dev us_unusual_dev_list[] = {
# include "unusual_devs.h"
# undef UNUSUAL_DEV
- /* Control/Bulk transport for all SubClass values */
- { .useProtocol = US_SC_RBC,
- .useTransport = US_PR_CB},
- { .useProtocol = US_SC_8020,
- .useTransport = US_PR_CB},
- { .useProtocol = US_SC_QIC,
- .useTransport = US_PR_CB},
- { .useProtocol = US_SC_UFI,
- .useTransport = US_PR_CB},
- { .useProtocol = US_SC_8070,
- .useTransport = US_PR_CB},
- { .useProtocol = US_SC_SCSI,
- .useTransport = US_PR_CB},
-
- /* Control/Bulk/Interrupt transport for all SubClass values */
- { .useProtocol = US_SC_RBC,
- .useTransport = US_PR_CBI},
- { .useProtocol = US_SC_8020,
- .useTransport = US_PR_CBI},
- { .useProtocol = US_SC_QIC,
- .useTransport = US_PR_CBI},
- { .useProtocol = US_SC_UFI,
- .useTransport = US_PR_CBI},
- { .useProtocol = US_SC_8070,
- .useTransport = US_PR_CBI},
- { .useProtocol = US_SC_SCSI,
- .useTransport = US_PR_CBI},
-
- /* Bulk-only transport for all SubClass values */
- { .useProtocol = US_SC_RBC,
- .useTransport = US_PR_BULK},
- { .useProtocol = US_SC_8020,
- .useTransport = US_PR_BULK},
- { .useProtocol = US_SC_QIC,
- .useTransport = US_PR_BULK},
- { .useProtocol = US_SC_UFI,
- .useTransport = US_PR_BULK},
- { .useProtocol = US_SC_8070,
- .useTransport = US_PR_BULK},
- { .useProtocol = US_SC_SCSI,
- .useTransport = US_PR_BULK},
+# undef USUAL_DEV
/* Terminating entry */
{ NULL }
@@ -484,14 +432,20 @@
return 0;
}
+/* Find an unusual_dev descriptor (always succeeds in the current code) */
+static struct us_unusual_dev *find_unusual(const struct usb_device_id *id)
+{
+ const int id_index = id - storage_usb_ids;
+ return &us_unusual_dev_list[id_index];
+}
+
/* Get the unusual_devs entries and the string descriptors */
-static void get_device_info(struct us_data *us, int id_index)
+static void get_device_info(struct us_data *us, const struct usb_device_id *id)
{
struct usb_device *dev = us->pusb_dev;
struct usb_interface_descriptor *idesc =
&us->pusb_intf->cur_altsetting->desc;
- struct us_unusual_dev *unusual_dev = &us_unusual_dev_list[id_index];
- struct usb_device_id *id = &storage_usb_ids[id_index];
+ struct us_unusual_dev *unusual_dev = find_unusual(id);
/* Store the entries */
us->unusual_dev = unusual_dev;
@@ -501,7 +455,7 @@
us->protocol = (unusual_dev->useTransport == US_PR_DEVICE) ?
idesc->bInterfaceProtocol :
unusual_dev->useTransport;
- us->flags = unusual_dev->flags;
+ us->flags = USB_US_ORIG_FLAGS(id->driver_info);
/*
* This flag is only needed when we're in high-speed, so let's
@@ -529,7 +483,7 @@
if (unusual_dev->useTransport != US_PR_DEVICE &&
us->protocol == idesc->bInterfaceProtocol)
msg += 2;
- if (msg >= 0 && !(unusual_dev->flags & US_FL_NEED_OVERRIDE))
+ if (msg >= 0 && !(us->flags & US_FL_NEED_OVERRIDE))
printk(KERN_NOTICE USB_STORAGE "This device "
"(%04x,%04x,%04x S %02x P %02x)"
" has %s in unusual_devs.h\n"
@@ -921,10 +875,12 @@
{
struct Scsi_Host *host;
struct us_data *us;
- const int id_index = id - storage_usb_ids;
int result;
struct task_struct *th;
+ if (usb_usual_check_type(id, USB_US_TYPE_STOR))
+ return -ENXIO;
+
US_DEBUGP("USB Mass Storage device detected\n");
/*
@@ -957,7 +913,7 @@
* of the match from the usb_device_id table, so we can find the
* corresponding entry in the private table.
*/
- get_device_info(us, id_index);
+ get_device_info(us, id);
#ifdef CONFIG_USB_STORAGE_SDDR09
if (us->protocol == US_PR_EUSB_SDDR09 ||
@@ -1062,9 +1018,10 @@
/* register the driver, return usb_register return code if error */
retval = usb_register(&usb_storage_driver);
- if (retval == 0)
+ if (retval == 0) {
printk(KERN_INFO "USB Mass Storage support registered.\n");
-
+ usb_usual_set_present(USB_US_TYPE_STOR);
+ }
return retval;
}
@@ -1088,6 +1045,8 @@
wait_for_completion(&threads_gone);
atomic_dec(&total_threads);
}
+
+ usb_usual_clear_present(USB_US_TYPE_STOR);
}
module_init(usb_stor_init);
diff --git a/drivers/usb/storage/usb.h b/drivers/usb/storage/usb.h
index 98b0971..0cd1eeb 100644
--- a/drivers/usb/storage/usb.h
+++ b/drivers/usb/storage/usb.h
@@ -45,6 +45,7 @@
#define _USB_H_
#include <linux/usb.h>
+#include <linux/usb_usual.h>
#include <linux/blkdev.h>
#include <linux/smp_lock.h>
#include <linux/completion.h>
@@ -63,38 +64,8 @@
__u8 useProtocol;
__u8 useTransport;
int (*initFunction)(struct us_data *);
- unsigned int flags;
};
-/*
- * Static flag definitions. We use this roundabout technique so that the
- * proc_info() routine can automatically display a message for each flag.
- */
-#define US_DO_ALL_FLAGS \
- US_FLAG(SINGLE_LUN, 0x00000001) \
- /* allow access to only LUN 0 */ \
- US_FLAG(NEED_OVERRIDE, 0x00000002) \
- /* unusual_devs entry is necessary */ \
- US_FLAG(SCM_MULT_TARG, 0x00000004) \
- /* supports multiple targets */ \
- US_FLAG(FIX_INQUIRY, 0x00000008) \
- /* INQUIRY response needs faking */ \
- US_FLAG(FIX_CAPACITY, 0x00000010) \
- /* READ CAPACITY response too big */ \
- US_FLAG(IGNORE_RESIDUE, 0x00000020) \
- /* reported residue is wrong */ \
- US_FLAG(BULK32, 0x00000040) \
- /* Uses 32-byte CBW length */ \
- US_FLAG(NOT_LOCKABLE, 0x00000080) \
- /* PREVENT/ALLOW not supported */ \
- US_FLAG(GO_SLOW, 0x00000100) \
- /* Need delay after Command phase */ \
- US_FLAG(NO_WP_DETECT, 0x00000200) \
- /* Don't check for write-protect */ \
-
-#define US_FLAG(name, value) US_FL_##name = value ,
-enum { US_DO_ALL_FLAGS };
-#undef US_FLAG
/* Dynamic flag definitions: used in set_bit() etc. */
#define US_FLIDX_URB_ACTIVE 18 /* 0x00040000 current_urb is in use */