diff options
| -rw-r--r-- | drivers/block/Kconfig | 3 | ||||
| -rw-r--r-- | drivers/block/ub.c | 23 | ||||
| -rw-r--r-- | drivers/usb/Makefile | 1 | ||||
| -rw-r--r-- | drivers/usb/storage/Kconfig | 14 | ||||
| -rw-r--r-- | drivers/usb/storage/Makefile | 4 | ||||
| -rw-r--r-- | drivers/usb/storage/libusual.c | 266 | ||||
| -rw-r--r-- | drivers/usb/storage/protocol.h | 14 | ||||
| -rw-r--r-- | drivers/usb/storage/transport.h | 31 | ||||
| -rw-r--r-- | drivers/usb/storage/unusual_devs.h | 24 | ||||
| -rw-r--r-- | drivers/usb/storage/usb.c | 119 | ||||
| -rw-r--r-- | drivers/usb/storage/usb.h | 31 | ||||
| -rw-r--r-- | include/linux/usb_usual.h | 123 |
12 files changed, 486 insertions, 167 deletions
diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig index 7b1cd93892be..c4b9d2adfc08 100644 --- a/drivers/block/Kconfig +++ b/drivers/block/Kconfig @@ -358,7 +358,8 @@ config BLK_DEV_UB 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 bfb23d543ff7..06d741d58a68 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 @@ static int ub_probe_lun(struct ub_dev *sc, int lnum); /* */ +#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 @@ static int ub_probe(struct usb_interface *intf, 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 @@ static int __init ub_init(void) 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 @@ static void __exit ub_exit(void) 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 a50c2bc506f2..3639c3f8d357 100644 --- a/drivers/usb/Makefile +++ b/drivers/usb/Makefile @@ -22,6 +22,7 @@ obj-$(CONFIG_USB_MIDI) += class/ obj-$(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 c41d64dbb0f0..bdfcb95d9c12 100644 --- a/drivers/usb/storage/Kconfig +++ b/drivers/usb/storage/Kconfig @@ -124,3 +124,17 @@ config USB_STORAGE_ONETOUCH 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 44ab8f9978fe..2d416e9028bb 100644 --- a/drivers/usb/storage/Makefile +++ b/drivers/usb/storage/Makefile @@ -22,3 +22,7 @@ usb-storage-obj-$(CONFIG_USB_STORAGE_ONETOUCH) += onetouch.o 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 000000000000..61f73d8a2c0f --- /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 02bff01ab09c..845bed4b8031 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 0a362cc781ad..633a715850a4 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 f5f47a34b168..76904ad11241 100644 --- a/drivers/usb/storage/unusual_devs.h +++ b/drivers/usb/storage/unusual_devs.h @@ -1134,3 +1134,27 @@ UNUSUAL_DEV( 0x55aa, 0xa103, 0x0000, 0x9999, 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 3847ebed2aa4..c8375aa62723 100644 --- a/drivers/usb/storage/usb.c +++ b/drivers/usb/storage/usb.c @@ -112,49 +112,33 @@ static atomic_t total_threads = ATOMIC_INIT(0); 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 @@ MODULE_DEVICE_TABLE (usb, storage_usb_ids); * 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 @@ MODULE_DEVICE_TABLE (usb, storage_usb_ids); .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 @@ static int associate_dev(struct us_data *us, struct usb_interface *intf) 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 @@ static void get_device_info(struct us_data *us, int id_index) 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 @@ static void get_device_info(struct us_data *us, int id_index) 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 @@ static int storage_probe(struct usb_interface *intf, { 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 @@ static int storage_probe(struct usb_interface *intf, * 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 @@ static int __init usb_stor_init(void) /* 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 @@ static void __exit usb_stor_exit(void) 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 98b09711a739..0cd1eebc4497 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 @@ struct us_unusual_dev { __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 */ diff --git a/include/linux/usb_usual.h b/include/linux/usb_usual.h new file mode 100644 index 000000000000..f9c058f33712 --- /dev/null +++ b/include/linux/usb_usual.h @@ -0,0 +1,123 @@ +/* + * Interface to the libusual. + * + * Copyright (c) 2005 Pete Zaitcev <zaitcev@redhat.com> + * Copyright (c) 1999-2002 Matthew Dharm (mdharm-usb@one-eyed-alien.net) + * Copyright (c) 1999 Michael Gee (michael@linuxspecific.com) + */ + +#ifndef __LINUX_USB_USUAL_H +#define __LINUX_USB_USUAL_H + +#include <linux/config.h> + +/* We should do this for cleanliness... But other usb_foo.h do not do this. */ +/* #include <linux/usb.h> */ + +/* + * The flags field, which we store in usb_device_id.driver_info. + * It is compatible with the old usb-storage flags in lower 24 bits. + */ + +/* + * 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 + +/* + * The bias field for libusual and friends. + */ +#define USB_US_TYPE_NONE 0 +#define USB_US_TYPE_STOR 1 /* usb-storage */ +#define USB_US_TYPE_UB 2 /* ub */ + +#define USB_US_TYPE(flags) (((flags) >> 24) & 0xFF) +#define USB_US_ORIG_FLAGS(flags) ((flags) & 0x00FFFFFF) + +/* + * This is probably not the best place to keep these constants, conceptually. + * But it's the only header included into all places which need them. + */ + +/* 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 */ + +/* 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 */ + +/* + */ +#ifdef CONFIG_USB_LIBUSUAL + +extern struct usb_device_id storage_usb_ids[]; +extern void usb_usual_set_present(int type); +extern void usb_usual_clear_present(int type); +extern int usb_usual_check_type(const struct usb_device_id *, int type); +#else + +#define usb_usual_set_present(t) do { } while(0) +#define usb_usual_clear_present(t) do { } while(0) +#define usb_usual_check_type(id, t) (0) +#endif /* CONFIG_USB_LIBUSUAL */ + +#endif /* __LINUX_USB_USUAL_H */ |