Felipe Balbi | f0183a3 | 2016-04-18 13:09:11 +0300 | [diff] [blame] | 1 | /* |
| 2 | * Driver for USB Mass Storage compliant devices |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * Current development and maintenance by: |
| 5 | * (c) 1999-2003 Matthew Dharm (mdharm-usb@one-eyed-alien.net) |
| 6 | * |
| 7 | * Developed with the assistance of: |
| 8 | * (c) 2000 David L. Brown, Jr. (usb-storage@davidb.org) |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 9 | * (c) 2003-2009 Alan Stern (stern@rowland.harvard.edu) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | * |
| 11 | * Initial work by: |
| 12 | * (c) 1999 Michael Gee (michael@linuxspecific.com) |
| 13 | * |
| 14 | * usb_device_id support by Adam J. Richter (adam@yggdrasil.com): |
| 15 | * (c) 2000 Yggdrasil Computing, Inc. |
| 16 | * |
| 17 | * This driver is based on the 'USB Mass Storage Class' document. This |
| 18 | * describes in detail the protocol used to communicate with such |
| 19 | * devices. Clearly, the designers had SCSI and ATAPI commands in |
| 20 | * mind when they created this document. The commands are all very |
| 21 | * similar to commands in the SCSI-II and ATAPI specifications. |
| 22 | * |
| 23 | * It is important to note that in a number of cases this class |
| 24 | * exhibits class-specific exemptions from the USB specification. |
| 25 | * Notably the usage of NAK, STALL and ACK differs from the norm, in |
| 26 | * that they are used to communicate wait, failed and OK on commands. |
| 27 | * |
| 28 | * Also, for certain devices, the interrupt endpoint is used to convey |
| 29 | * status of a command. |
| 30 | * |
| 31 | * Please see http://www.one-eyed-alien.net/~mdharm/linux-usb for more |
| 32 | * information about this driver. |
| 33 | * |
| 34 | * This program is free software; you can redistribute it and/or modify it |
| 35 | * under the terms of the GNU General Public License as published by the |
| 36 | * Free Software Foundation; either version 2, or (at your option) any |
| 37 | * later version. |
| 38 | * |
| 39 | * This program is distributed in the hope that it will be useful, but |
| 40 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 41 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 42 | * General Public License for more details. |
| 43 | * |
| 44 | * You should have received a copy of the GNU General Public License along |
| 45 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 46 | * 675 Mass Ave, Cambridge, MA 02139, USA. |
| 47 | */ |
| 48 | |
Matthew Wilcox | 9eb66f7 | 2009-09-24 16:19:49 -0600 | [diff] [blame] | 49 | #ifdef CONFIG_USB_STORAGE_DEBUG |
| 50 | #define DEBUG |
| 51 | #endif |
| 52 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | #include <linux/sched.h> |
| 54 | #include <linux/errno.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | #include <linux/module.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | #include <linux/slab.h> |
Alan Stern | 3f13e66 | 2005-10-23 19:43:36 -0700 | [diff] [blame] | 57 | #include <linux/kthread.h> |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 58 | #include <linux/mutex.h> |
Sam Ravnborg | 00f8b0c1 | 2007-03-05 00:30:55 -0800 | [diff] [blame] | 59 | #include <linux/utsname.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | |
| 61 | #include <scsi/scsi.h> |
| 62 | #include <scsi/scsi_cmnd.h> |
| 63 | #include <scsi/scsi_device.h> |
| 64 | |
| 65 | #include "usb.h" |
| 66 | #include "scsiglue.h" |
| 67 | #include "transport.h" |
| 68 | #include "protocol.h" |
| 69 | #include "debug.h" |
| 70 | #include "initializers.h" |
| 71 | |
Kevin Lloyd | 32fe5e3 | 2008-07-10 14:14:57 -0700 | [diff] [blame] | 72 | #include "sierra_ms.h" |
Dan Williams | 281b064 | 2008-12-14 12:39:22 -0500 | [diff] [blame] | 73 | #include "option_ms.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | |
Hans de Goede | 5bfd5b5 | 2013-10-21 09:40:48 +0100 | [diff] [blame] | 75 | #if IS_ENABLED(CONFIG_USB_UAS) |
| 76 | #include "uas-detect.h" |
| 77 | #endif |
| 78 | |
Akinobu Mita | aa519be | 2015-05-06 18:24:21 +0900 | [diff] [blame] | 79 | #define DRV_NAME "usb-storage" |
| 80 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | /* Some informational data */ |
| 82 | MODULE_AUTHOR("Matthew Dharm <mdharm-usb@one-eyed-alien.net>"); |
| 83 | MODULE_DESCRIPTION("USB Mass Storage driver for Linux"); |
| 84 | MODULE_LICENSE("GPL"); |
| 85 | |
Linus Torvalds | a4a47bc | 2010-02-26 10:03:22 -0800 | [diff] [blame] | 86 | static unsigned int delay_use = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | module_param(delay_use, uint, S_IRUGO | S_IWUSR); |
| 88 | MODULE_PARM_DESC(delay_use, "seconds to delay before using a new device"); |
| 89 | |
Alan Stern | c838ea4 | 2008-12-15 10:40:06 -0500 | [diff] [blame] | 90 | static char quirks[128]; |
| 91 | module_param_string(quirks, quirks, sizeof(quirks), S_IRUGO | S_IWUSR); |
Alan Stern | d4f373e | 2008-11-10 14:07:45 -0500 | [diff] [blame] | 92 | MODULE_PARM_DESC(quirks, "supplemental list of device IDs and their quirks"); |
| 93 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | |
Pete Zaitcev | a00828e | 2005-10-22 20:15:09 -0700 | [diff] [blame] | 95 | /* |
| 96 | * The entries in this table correspond, line for line, |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 97 | * with the entries in usb_storage_usb_ids[], defined in usual-tables.c. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | |
Felipe Balbi | f0183a3 | 2016-04-18 13:09:11 +0300 | [diff] [blame] | 100 | /* |
| 101 | *The vendor name should be kept at eight characters or less, and |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | * the product name should be kept at 16 characters or less. If a device |
| 103 | * has the US_FL_FIX_INQUIRY flag, then the vendor and product names |
Mickael Maison | a6cd244 | 2014-09-18 11:25:04 +0200 | [diff] [blame] | 104 | * normally generated by a device through the INQUIRY response will be |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | * taken from this list, and this is the reason for the above size |
| 106 | * restriction. However, if the flag is not present, then you |
| 107 | * are free to use as many characters as you like. |
| 108 | */ |
| 109 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | #define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \ |
| 111 | vendor_name, product_name, use_protocol, use_transport, \ |
| 112 | init_function, Flags) \ |
| 113 | { \ |
| 114 | .vendorName = vendor_name, \ |
| 115 | .productName = product_name, \ |
| 116 | .useProtocol = use_protocol, \ |
| 117 | .useTransport = use_transport, \ |
| 118 | .initFunction = init_function, \ |
Pete Zaitcev | a00828e | 2005-10-22 20:15:09 -0700 | [diff] [blame] | 119 | } |
| 120 | |
Alan Stern | 25ff1c3 | 2008-12-15 12:43:41 -0500 | [diff] [blame] | 121 | #define COMPLIANT_DEV UNUSUAL_DEV |
| 122 | |
Sebastian Andrzej Siewior | f61870e | 2012-08-28 22:37:13 +0200 | [diff] [blame] | 123 | #define USUAL_DEV(use_protocol, use_transport) \ |
Pete Zaitcev | a00828e | 2005-10-22 20:15:09 -0700 | [diff] [blame] | 124 | { \ |
| 125 | .useProtocol = use_protocol, \ |
| 126 | .useTransport = use_transport, \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | } |
| 128 | |
fangxiaozhi | 07c7be3 | 2013-02-04 15:14:46 +0800 | [diff] [blame] | 129 | #define UNUSUAL_VENDOR_INTF(idVendor, cl, sc, pr, \ |
| 130 | vendor_name, product_name, use_protocol, use_transport, \ |
| 131 | init_function, Flags) \ |
| 132 | { \ |
| 133 | .vendorName = vendor_name, \ |
| 134 | .productName = product_name, \ |
| 135 | .useProtocol = use_protocol, \ |
| 136 | .useTransport = use_transport, \ |
| 137 | .initFunction = init_function, \ |
| 138 | } |
| 139 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | static struct us_unusual_dev us_unusual_dev_list[] = { |
Jeffrin Jose | a163106 | 2012-05-17 00:33:36 +0530 | [diff] [blame] | 141 | # include "unusual_devs.h" |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 142 | { } /* Terminating entry */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | }; |
| 144 | |
Huajun Li | fd7ff36 | 2012-01-14 10:16:40 +0800 | [diff] [blame] | 145 | static struct us_unusual_dev for_dynamic_ids = |
Sebastian Andrzej Siewior | f61870e | 2012-08-28 22:37:13 +0200 | [diff] [blame] | 146 | USUAL_DEV(USB_SC_SCSI, USB_PR_BULK); |
Huajun Li | fd7ff36 | 2012-01-14 10:16:40 +0800 | [diff] [blame] | 147 | |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 148 | #undef UNUSUAL_DEV |
| 149 | #undef COMPLIANT_DEV |
| 150 | #undef USUAL_DEV |
fangxiaozhi | 07c7be3 | 2013-02-04 15:14:46 +0800 | [diff] [blame] | 151 | #undef UNUSUAL_VENDOR_INTF |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 152 | |
Ming Lei | c825bab | 2012-03-19 15:20:57 +0800 | [diff] [blame] | 153 | #ifdef CONFIG_LOCKDEP |
| 154 | |
| 155 | static struct lock_class_key us_interface_key[USB_MAXINTERFACES]; |
| 156 | |
| 157 | static void us_set_lock_class(struct mutex *mutex, |
| 158 | struct usb_interface *intf) |
| 159 | { |
| 160 | struct usb_device *udev = interface_to_usbdev(intf); |
| 161 | struct usb_host_config *config = udev->actconfig; |
| 162 | int i; |
| 163 | |
| 164 | for (i = 0; i < config->desc.bNumInterfaces; i++) { |
| 165 | if (config->interface[i] == intf) |
| 166 | break; |
| 167 | } |
| 168 | |
| 169 | BUG_ON(i == config->desc.bNumInterfaces); |
| 170 | |
| 171 | lockdep_set_class(mutex, &us_interface_key[i]); |
| 172 | } |
| 173 | |
| 174 | #else |
| 175 | |
| 176 | static void us_set_lock_class(struct mutex *mutex, |
| 177 | struct usb_interface *intf) |
| 178 | { |
| 179 | } |
| 180 | |
| 181 | #endif |
Alan Stern | ce2596d | 2005-10-23 19:41:39 -0700 | [diff] [blame] | 182 | |
| 183 | #ifdef CONFIG_PM /* Minimal support for suspend and resume */ |
| 184 | |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 185 | int usb_stor_suspend(struct usb_interface *iface, pm_message_t message) |
Alan Stern | ce2596d | 2005-10-23 19:41:39 -0700 | [diff] [blame] | 186 | { |
| 187 | struct us_data *us = usb_get_intfdata(iface); |
| 188 | |
| 189 | /* Wait until no command is running */ |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 190 | mutex_lock(&us->dev_mutex); |
Alan Stern | ce2596d | 2005-10-23 19:41:39 -0700 | [diff] [blame] | 191 | |
Matthew Dharm | 7931e1c | 2005-12-04 21:56:51 -0800 | [diff] [blame] | 192 | if (us->suspend_resume_hook) |
| 193 | (us->suspend_resume_hook)(us, US_SUSPEND); |
Alan Stern | ce2596d | 2005-10-23 19:41:39 -0700 | [diff] [blame] | 194 | |
Felipe Balbi | f0183a3 | 2016-04-18 13:09:11 +0300 | [diff] [blame] | 195 | /* |
| 196 | * When runtime PM is working, we'll set a flag to indicate |
| 197 | * whether we should autoresume when a SCSI request arrives. |
| 198 | */ |
Greg Kroah-Hartman | d526875 | 2007-09-13 06:01:24 -0700 | [diff] [blame] | 199 | |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 200 | mutex_unlock(&us->dev_mutex); |
Alan Stern | ce2596d | 2005-10-23 19:41:39 -0700 | [diff] [blame] | 201 | return 0; |
| 202 | } |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 203 | EXPORT_SYMBOL_GPL(usb_stor_suspend); |
Alan Stern | ce2596d | 2005-10-23 19:41:39 -0700 | [diff] [blame] | 204 | |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 205 | int usb_stor_resume(struct usb_interface *iface) |
Alan Stern | ce2596d | 2005-10-23 19:41:39 -0700 | [diff] [blame] | 206 | { |
| 207 | struct us_data *us = usb_get_intfdata(iface); |
| 208 | |
Greg Kroah-Hartman | d526875 | 2007-09-13 06:01:24 -0700 | [diff] [blame] | 209 | mutex_lock(&us->dev_mutex); |
Alan Stern | 8dfe4b1 | 2007-07-06 14:24:27 -0400 | [diff] [blame] | 210 | |
Matthew Dharm | 7931e1c | 2005-12-04 21:56:51 -0800 | [diff] [blame] | 211 | if (us->suspend_resume_hook) |
| 212 | (us->suspend_resume_hook)(us, US_RESUME); |
Alan Stern | ce2596d | 2005-10-23 19:41:39 -0700 | [diff] [blame] | 213 | |
Greg Kroah-Hartman | d526875 | 2007-09-13 06:01:24 -0700 | [diff] [blame] | 214 | mutex_unlock(&us->dev_mutex); |
Alan Stern | ce2596d | 2005-10-23 19:41:39 -0700 | [diff] [blame] | 215 | return 0; |
| 216 | } |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 217 | EXPORT_SYMBOL_GPL(usb_stor_resume); |
Alan Stern | ce2596d | 2005-10-23 19:41:39 -0700 | [diff] [blame] | 218 | |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 219 | int usb_stor_reset_resume(struct usb_interface *iface) |
Alan Stern | f07600c | 2007-05-30 15:38:16 -0400 | [diff] [blame] | 220 | { |
| 221 | struct us_data *us = usb_get_intfdata(iface); |
| 222 | |
Alan Stern | f07600c | 2007-05-30 15:38:16 -0400 | [diff] [blame] | 223 | /* Report the reset to the SCSI core */ |
| 224 | usb_stor_report_bus_reset(us); |
| 225 | |
Felipe Balbi | f0183a3 | 2016-04-18 13:09:11 +0300 | [diff] [blame] | 226 | /* |
| 227 | * FIXME: Notify the subdrivers that they need to reinitialize |
| 228 | * the device |
| 229 | */ |
Alan Stern | f07600c | 2007-05-30 15:38:16 -0400 | [diff] [blame] | 230 | return 0; |
| 231 | } |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 232 | EXPORT_SYMBOL_GPL(usb_stor_reset_resume); |
Alan Stern | f07600c | 2007-05-30 15:38:16 -0400 | [diff] [blame] | 233 | |
Alan Stern | ce2596d | 2005-10-23 19:41:39 -0700 | [diff] [blame] | 234 | #endif /* CONFIG_PM */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | |
| 236 | /* |
Alan Stern | 47104b0 | 2006-06-01 13:52:56 -0400 | [diff] [blame] | 237 | * The next two routines get called just before and just after |
| 238 | * a USB port reset, whether from this driver or a different one. |
| 239 | */ |
| 240 | |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 241 | int usb_stor_pre_reset(struct usb_interface *iface) |
Alan Stern | 47104b0 | 2006-06-01 13:52:56 -0400 | [diff] [blame] | 242 | { |
| 243 | struct us_data *us = usb_get_intfdata(iface); |
| 244 | |
Alan Stern | 47104b0 | 2006-06-01 13:52:56 -0400 | [diff] [blame] | 245 | /* Make sure no command runs during the reset */ |
| 246 | mutex_lock(&us->dev_mutex); |
Alan Stern | f07600c | 2007-05-30 15:38:16 -0400 | [diff] [blame] | 247 | return 0; |
Alan Stern | 47104b0 | 2006-06-01 13:52:56 -0400 | [diff] [blame] | 248 | } |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 249 | EXPORT_SYMBOL_GPL(usb_stor_pre_reset); |
Alan Stern | 47104b0 | 2006-06-01 13:52:56 -0400 | [diff] [blame] | 250 | |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 251 | int usb_stor_post_reset(struct usb_interface *iface) |
Alan Stern | 47104b0 | 2006-06-01 13:52:56 -0400 | [diff] [blame] | 252 | { |
| 253 | struct us_data *us = usb_get_intfdata(iface); |
| 254 | |
Alan Stern | 47104b0 | 2006-06-01 13:52:56 -0400 | [diff] [blame] | 255 | /* Report the reset to the SCSI core */ |
Alan Stern | 47104b0 | 2006-06-01 13:52:56 -0400 | [diff] [blame] | 256 | usb_stor_report_bus_reset(us); |
Alan Stern | 47104b0 | 2006-06-01 13:52:56 -0400 | [diff] [blame] | 257 | |
Felipe Balbi | f0183a3 | 2016-04-18 13:09:11 +0300 | [diff] [blame] | 258 | /* |
| 259 | * FIXME: Notify the subdrivers that they need to reinitialize |
| 260 | * the device |
| 261 | */ |
Alan Stern | 0458d5b | 2007-05-04 11:52:20 -0400 | [diff] [blame] | 262 | |
Alan Stern | f07600c | 2007-05-30 15:38:16 -0400 | [diff] [blame] | 263 | mutex_unlock(&us->dev_mutex); |
| 264 | return 0; |
Alan Stern | 47104b0 | 2006-06-01 13:52:56 -0400 | [diff] [blame] | 265 | } |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 266 | EXPORT_SYMBOL_GPL(usb_stor_post_reset); |
Alan Stern | 47104b0 | 2006-06-01 13:52:56 -0400 | [diff] [blame] | 267 | |
| 268 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | * fill_inquiry_response takes an unsigned char array (which must |
| 270 | * be at least 36 characters) and populates the vendor name, |
| 271 | * product name, and revision fields. Then the array is copied |
| 272 | * into the SCSI command's response buffer (oddly enough |
| 273 | * called request_buffer). data_len contains the length of the |
| 274 | * data array, which again must be at least 36. |
| 275 | */ |
| 276 | |
| 277 | void fill_inquiry_response(struct us_data *us, unsigned char *data, |
| 278 | unsigned int data_len) |
| 279 | { |
Jeffrin Jose | a163106 | 2012-05-17 00:33:36 +0530 | [diff] [blame] | 280 | if (data_len < 36) /* You lose. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | return; |
| 282 | |
Alan Stern | f3f6faa | 2009-12-07 16:47:43 -0500 | [diff] [blame] | 283 | memset(data+8, ' ', 28); |
Felipe Balbi | f0183a3 | 2016-04-18 13:09:11 +0300 | [diff] [blame] | 284 | if (data[0]&0x20) { /* |
| 285 | * USB device currently not connected. Return |
| 286 | * peripheral qualifier 001b ("...however, the |
| 287 | * physical device is not currently connected |
| 288 | * to this logical unit") and leave vendor and |
| 289 | * product identification empty. ("If the target |
| 290 | * does store some of the INQUIRY data on the |
| 291 | * device, it may return zeros or ASCII spaces |
| 292 | * (20h) in those fields until the data is |
| 293 | * available from the device."). |
| 294 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | } else { |
| 296 | u16 bcdDevice = le16_to_cpu(us->pusb_dev->descriptor.bcdDevice); |
Alan Stern | f3f6faa | 2009-12-07 16:47:43 -0500 | [diff] [blame] | 297 | int n; |
| 298 | |
| 299 | n = strlen(us->unusual_dev->vendorName); |
| 300 | memcpy(data+8, us->unusual_dev->vendorName, min(8, n)); |
| 301 | n = strlen(us->unusual_dev->productName); |
| 302 | memcpy(data+16, us->unusual_dev->productName, min(16, n)); |
| 303 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | data[32] = 0x30 + ((bcdDevice>>12) & 0x0F); |
| 305 | data[33] = 0x30 + ((bcdDevice>>8) & 0x0F); |
| 306 | data[34] = 0x30 + ((bcdDevice>>4) & 0x0F); |
| 307 | data[35] = 0x30 + ((bcdDevice) & 0x0F); |
| 308 | } |
| 309 | |
| 310 | usb_stor_set_xfer_buf(data, data_len, us->srb); |
| 311 | } |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 312 | EXPORT_SYMBOL_GPL(fill_inquiry_response); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | |
| 314 | static int usb_stor_control_thread(void * __us) |
| 315 | { |
| 316 | struct us_data *us = (struct us_data *)__us; |
| 317 | struct Scsi_Host *host = us_to_host(us); |
Alan Stern | 8b52291 | 2017-07-26 11:49:19 -0400 | [diff] [blame] | 318 | struct scsi_cmnd *srb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 319 | |
Jeffrin Jose | db2c862 | 2012-05-17 00:34:28 +0530 | [diff] [blame] | 320 | for (;;) { |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 321 | usb_stor_dbg(us, "*** thread sleeping\n"); |
Alan Stern | 7119e3c | 2008-05-01 15:36:13 -0400 | [diff] [blame] | 322 | if (wait_for_completion_interruptible(&us->cmnd_ready)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | break; |
Alan Stern | 7119e3c | 2008-05-01 15:36:13 -0400 | [diff] [blame] | 324 | |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 325 | usb_stor_dbg(us, "*** thread awakened\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | |
| 327 | /* lock the device pointers */ |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 328 | mutex_lock(&(us->dev_mutex)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 329 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | /* lock access to the state */ |
| 331 | scsi_lock(host); |
| 332 | |
Alan Stern | 543f781 | 2008-05-08 11:55:59 -0400 | [diff] [blame] | 333 | /* When we are called with no command pending, we're done */ |
Alan Stern | 8b52291 | 2017-07-26 11:49:19 -0400 | [diff] [blame] | 334 | srb = us->srb; |
Alan Stern | 543f781 | 2008-05-08 11:55:59 -0400 | [diff] [blame] | 335 | if (us->srb == NULL) { |
| 336 | scsi_unlock(host); |
| 337 | mutex_unlock(&us->dev_mutex); |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 338 | usb_stor_dbg(us, "-- exiting\n"); |
Alan Stern | 543f781 | 2008-05-08 11:55:59 -0400 | [diff] [blame] | 339 | break; |
| 340 | } |
| 341 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | /* has the command timed out *already* ? */ |
Alan Stern | 7e4d6c3 | 2008-05-01 15:35:18 -0400 | [diff] [blame] | 343 | if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | us->srb->result = DID_ABORT << 16; |
| 345 | goto SkipForAbort; |
| 346 | } |
| 347 | |
| 348 | scsi_unlock(host); |
| 349 | |
Felipe Balbi | f0183a3 | 2016-04-18 13:09:11 +0300 | [diff] [blame] | 350 | /* |
| 351 | * reject the command if the direction indicator |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | * is UNKNOWN |
| 353 | */ |
| 354 | if (us->srb->sc_data_direction == DMA_BIDIRECTIONAL) { |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 355 | usb_stor_dbg(us, "UNKNOWN data direction\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | us->srb->result = DID_ERROR << 16; |
| 357 | } |
| 358 | |
Felipe Balbi | f0183a3 | 2016-04-18 13:09:11 +0300 | [diff] [blame] | 359 | /* |
| 360 | * reject if target != 0 or if LUN is higher than |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | * the maximum known LUN |
| 362 | */ |
Jeffrin Jose | a163106 | 2012-05-17 00:33:36 +0530 | [diff] [blame] | 363 | else if (us->srb->device->id && |
Alan Stern | 7e4d6c3 | 2008-05-01 15:35:18 -0400 | [diff] [blame] | 364 | !(us->fflags & US_FL_SCM_MULT_TARG)) { |
Hannes Reinecke | 9cb78c1 | 2014-06-25 15:27:36 +0200 | [diff] [blame] | 365 | usb_stor_dbg(us, "Bad target number (%d:%llu)\n", |
| 366 | us->srb->device->id, |
| 367 | us->srb->device->lun); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | us->srb->result = DID_BAD_TARGET << 16; |
| 369 | } |
| 370 | |
| 371 | else if (us->srb->device->lun > us->max_lun) { |
Hannes Reinecke | 9cb78c1 | 2014-06-25 15:27:36 +0200 | [diff] [blame] | 372 | usb_stor_dbg(us, "Bad LUN (%d:%llu)\n", |
| 373 | us->srb->device->id, |
| 374 | us->srb->device->lun); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | us->srb->result = DID_BAD_TARGET << 16; |
| 376 | } |
| 377 | |
Felipe Balbi | f0183a3 | 2016-04-18 13:09:11 +0300 | [diff] [blame] | 378 | /* |
| 379 | * Handle those devices which need us to fake |
| 380 | * their inquiry data |
| 381 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | else if ((us->srb->cmnd[0] == INQUIRY) && |
Alan Stern | 7e4d6c3 | 2008-05-01 15:35:18 -0400 | [diff] [blame] | 383 | (us->fflags & US_FL_FIX_INQUIRY)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | unsigned char data_ptr[36] = { |
| 385 | 0x00, 0x80, 0x02, 0x02, |
| 386 | 0x1F, 0x00, 0x00, 0x00}; |
| 387 | |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 388 | usb_stor_dbg(us, "Faking INQUIRY command\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | fill_inquiry_response(us, data_ptr, 36); |
| 390 | us->srb->result = SAM_STAT_GOOD; |
| 391 | } |
| 392 | |
| 393 | /* we've got a command, let's do it! */ |
| 394 | else { |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 395 | US_DEBUG(usb_stor_show_command(us, us->srb)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | us->proto_handler(us->srb, us); |
Alan Stern | f283925 | 2010-07-28 17:12:39 -0400 | [diff] [blame] | 397 | usb_mark_last_busy(us->pusb_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | } |
| 399 | |
| 400 | /* lock access to the state */ |
| 401 | scsi_lock(host); |
| 402 | |
Alan Stern | 8b52291 | 2017-07-26 11:49:19 -0400 | [diff] [blame] | 403 | /* was the command aborted? */ |
| 404 | if (us->srb->result == DID_ABORT << 16) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 405 | SkipForAbort: |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 406 | usb_stor_dbg(us, "scsi command aborted\n"); |
Alan Stern | 8b52291 | 2017-07-26 11:49:19 -0400 | [diff] [blame] | 407 | srb = NULL; /* Don't call srb->scsi_done() */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | } |
| 409 | |
Felipe Balbi | f0183a3 | 2016-04-18 13:09:11 +0300 | [diff] [blame] | 410 | /* |
| 411 | * If an abort request was received we need to signal that |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | * the abort has finished. The proper test for this is |
| 413 | * the TIMED_OUT flag, not srb->result == DID_ABORT, because |
Matthew Dharm | 226173e | 2005-08-25 20:03:50 -0700 | [diff] [blame] | 414 | * the timeout might have occurred after the command had |
Felipe Balbi | f0183a3 | 2016-04-18 13:09:11 +0300 | [diff] [blame] | 415 | * already completed with a different result code. |
| 416 | */ |
Alan Stern | 7e4d6c3 | 2008-05-01 15:35:18 -0400 | [diff] [blame] | 417 | if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | complete(&(us->notify)); |
| 419 | |
Matthew Dharm | 226173e | 2005-08-25 20:03:50 -0700 | [diff] [blame] | 420 | /* Allow USB transfers to resume */ |
Alan Stern | 7e4d6c3 | 2008-05-01 15:35:18 -0400 | [diff] [blame] | 421 | clear_bit(US_FLIDX_ABORTING, &us->dflags); |
| 422 | clear_bit(US_FLIDX_TIMED_OUT, &us->dflags); |
Matthew Dharm | 226173e | 2005-08-25 20:03:50 -0700 | [diff] [blame] | 423 | } |
| 424 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | /* finished working on this command */ |
| 426 | us->srb = NULL; |
| 427 | scsi_unlock(host); |
| 428 | |
| 429 | /* unlock the device pointers */ |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 430 | mutex_unlock(&us->dev_mutex); |
Alan Stern | 8b52291 | 2017-07-26 11:49:19 -0400 | [diff] [blame] | 431 | |
| 432 | /* now that the locks are released, notify the SCSI core */ |
| 433 | if (srb) { |
| 434 | usb_stor_dbg(us, "scsi cmd done, result=0x%x\n", |
| 435 | srb->result); |
| 436 | srb->scsi_done(srb); |
| 437 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | } /* for (;;) */ |
| 439 | |
Alan Stern | ed76cac | 2007-06-07 17:12:25 -0400 | [diff] [blame] | 440 | /* Wait until we are told to stop */ |
| 441 | for (;;) { |
| 442 | set_current_state(TASK_INTERRUPTIBLE); |
| 443 | if (kthread_should_stop()) |
| 444 | break; |
| 445 | schedule(); |
| 446 | } |
| 447 | __set_current_state(TASK_RUNNING); |
| 448 | return 0; |
Jeffrin Jose | a163106 | 2012-05-17 00:33:36 +0530 | [diff] [blame] | 449 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 450 | |
| 451 | /*********************************************************************** |
| 452 | * Device probing and disconnecting |
| 453 | ***********************************************************************/ |
| 454 | |
| 455 | /* Associate our private data with the USB device */ |
| 456 | static int associate_dev(struct us_data *us, struct usb_interface *intf) |
| 457 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | /* Fill in the device-related fields */ |
| 459 | us->pusb_dev = interface_to_usbdev(intf); |
| 460 | us->pusb_intf = intf; |
| 461 | us->ifnum = intf->cur_altsetting->desc.bInterfaceNumber; |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 462 | usb_stor_dbg(us, "Vendor: 0x%04x, Product: 0x%04x, Revision: 0x%04x\n", |
| 463 | le16_to_cpu(us->pusb_dev->descriptor.idVendor), |
| 464 | le16_to_cpu(us->pusb_dev->descriptor.idProduct), |
| 465 | le16_to_cpu(us->pusb_dev->descriptor.bcdDevice)); |
| 466 | usb_stor_dbg(us, "Interface Subclass: 0x%02x, Protocol: 0x%02x\n", |
| 467 | intf->cur_altsetting->desc.bInterfaceSubClass, |
| 468 | intf->cur_altsetting->desc.bInterfaceProtocol); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | |
| 470 | /* Store our private data in the interface */ |
| 471 | usb_set_intfdata(intf, us); |
| 472 | |
Alan Stern | 0ede76f | 2010-03-05 15:10:17 -0500 | [diff] [blame] | 473 | /* Allocate the control/setup and DMA-mapped buffers */ |
| 474 | us->cr = kmalloc(sizeof(*us->cr), GFP_KERNEL); |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 475 | if (!us->cr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | |
Daniel Mack | 997ea58 | 2010-04-12 13:17:25 +0200 | [diff] [blame] | 478 | us->iobuf = usb_alloc_coherent(us->pusb_dev, US_IOBUF_SIZE, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 479 | GFP_KERNEL, &us->iobuf_dma); |
| 480 | if (!us->iobuf) { |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 481 | usb_stor_dbg(us, "I/O buffer allocation failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 482 | return -ENOMEM; |
| 483 | } |
| 484 | return 0; |
| 485 | } |
| 486 | |
Alan Stern | c838ea4 | 2008-12-15 10:40:06 -0500 | [diff] [blame] | 487 | /* Works only for digits and letters, but small and fast */ |
| 488 | #define TOLOWER(x) ((x) | 0x20) |
| 489 | |
Alan Stern | d4f373e | 2008-11-10 14:07:45 -0500 | [diff] [blame] | 490 | /* Adjust device flags based on the "quirks=" module parameter */ |
Hans de Goede | d24d481 | 2013-11-16 12:09:39 +0100 | [diff] [blame] | 491 | void usb_stor_adjust_quirks(struct usb_device *udev, unsigned long *fflags) |
Alan Stern | d4f373e | 2008-11-10 14:07:45 -0500 | [diff] [blame] | 492 | { |
Alan Stern | c838ea4 | 2008-12-15 10:40:06 -0500 | [diff] [blame] | 493 | char *p; |
Hans de Goede | d24d481 | 2013-11-16 12:09:39 +0100 | [diff] [blame] | 494 | u16 vid = le16_to_cpu(udev->descriptor.idVendor); |
| 495 | u16 pid = le16_to_cpu(udev->descriptor.idProduct); |
Alan Stern | c838ea4 | 2008-12-15 10:40:06 -0500 | [diff] [blame] | 496 | unsigned f = 0; |
Alan Stern | a91b593 | 2009-12-22 23:16:32 -0500 | [diff] [blame] | 497 | unsigned int mask = (US_FL_SANE_SENSE | US_FL_BAD_SENSE | |
Hans de Goede | d24d481 | 2013-11-16 12:09:39 +0100 | [diff] [blame] | 498 | US_FL_FIX_CAPACITY | US_FL_IGNORE_UAS | |
Alan Stern | c838ea4 | 2008-12-15 10:40:06 -0500 | [diff] [blame] | 499 | US_FL_CAPACITY_HEURISTICS | US_FL_IGNORE_DEVICE | |
Alan Stern | d4f373e | 2008-11-10 14:07:45 -0500 | [diff] [blame] | 500 | US_FL_NOT_LOCKABLE | US_FL_MAX_SECTORS_64 | |
Alan Stern | c838ea4 | 2008-12-15 10:40:06 -0500 | [diff] [blame] | 501 | US_FL_CAPACITY_OK | US_FL_IGNORE_RESIDUE | |
Karl Relton | 5116901 | 2011-05-18 21:42:34 +0100 | [diff] [blame] | 502 | US_FL_SINGLE_LUN | US_FL_NO_WP_DETECT | |
Alan Stern | 21c13a4 | 2011-06-07 11:35:52 -0400 | [diff] [blame] | 503 | US_FL_NO_READ_DISC_INFO | US_FL_NO_READ_CAPACITY_16 | |
Hans de Goede | 5930785 | 2014-09-15 16:04:12 +0200 | [diff] [blame] | 504 | US_FL_INITIAL_READ10 | US_FL_WRITE_CACHE | |
Hans de Goede | ee136af | 2015-04-21 11:20:31 +0200 | [diff] [blame] | 505 | US_FL_NO_ATA_1X | US_FL_NO_REPORT_OPCODES | |
Oliver Neukum | 050bc4e | 2016-09-12 15:19:41 +0200 | [diff] [blame] | 506 | US_FL_MAX_SECTORS_240 | US_FL_NO_REPORT_LUNS | |
| 507 | US_FL_ALWAYS_SYNC); |
Alan Stern | d4f373e | 2008-11-10 14:07:45 -0500 | [diff] [blame] | 508 | |
Alan Stern | c838ea4 | 2008-12-15 10:40:06 -0500 | [diff] [blame] | 509 | p = quirks; |
| 510 | while (*p) { |
| 511 | /* Each entry consists of VID:PID:flags */ |
| 512 | if (vid == simple_strtoul(p, &p, 16) && |
| 513 | *p == ':' && |
| 514 | pid == simple_strtoul(p+1, &p, 16) && |
| 515 | *p == ':') |
Alan Stern | d4f373e | 2008-11-10 14:07:45 -0500 | [diff] [blame] | 516 | break; |
Alan Stern | c838ea4 | 2008-12-15 10:40:06 -0500 | [diff] [blame] | 517 | |
| 518 | /* Move forward to the next entry */ |
| 519 | while (*p) { |
| 520 | if (*p++ == ',') |
| 521 | break; |
Alan Stern | d4f373e | 2008-11-10 14:07:45 -0500 | [diff] [blame] | 522 | } |
| 523 | } |
Alan Stern | c838ea4 | 2008-12-15 10:40:06 -0500 | [diff] [blame] | 524 | if (!*p) /* No match */ |
| 525 | return; |
| 526 | |
| 527 | /* Collect the flags */ |
| 528 | while (*++p && *p != ',') { |
| 529 | switch (TOLOWER(*p)) { |
| 530 | case 'a': |
| 531 | f |= US_FL_SANE_SENSE; |
| 532 | break; |
Alan Stern | a0bb108 | 2009-12-07 16:39:16 -0500 | [diff] [blame] | 533 | case 'b': |
| 534 | f |= US_FL_BAD_SENSE; |
| 535 | break; |
Alan Stern | c838ea4 | 2008-12-15 10:40:06 -0500 | [diff] [blame] | 536 | case 'c': |
| 537 | f |= US_FL_FIX_CAPACITY; |
| 538 | break; |
Karl Relton | 5116901 | 2011-05-18 21:42:34 +0100 | [diff] [blame] | 539 | case 'd': |
| 540 | f |= US_FL_NO_READ_DISC_INFO; |
| 541 | break; |
| 542 | case 'e': |
| 543 | f |= US_FL_NO_READ_CAPACITY_16; |
| 544 | break; |
Hans de Goede | 734016b | 2014-09-16 18:36:52 +0200 | [diff] [blame] | 545 | case 'f': |
| 546 | f |= US_FL_NO_REPORT_OPCODES; |
| 547 | break; |
Hans de Goede | ee136af | 2015-04-21 11:20:31 +0200 | [diff] [blame] | 548 | case 'g': |
| 549 | f |= US_FL_MAX_SECTORS_240; |
| 550 | break; |
Alan Stern | c838ea4 | 2008-12-15 10:40:06 -0500 | [diff] [blame] | 551 | case 'h': |
| 552 | f |= US_FL_CAPACITY_HEURISTICS; |
| 553 | break; |
| 554 | case 'i': |
| 555 | f |= US_FL_IGNORE_DEVICE; |
| 556 | break; |
Hans de Goede | 1363074 | 2016-04-12 12:27:09 +0200 | [diff] [blame] | 557 | case 'j': |
| 558 | f |= US_FL_NO_REPORT_LUNS; |
| 559 | break; |
Alan Stern | c838ea4 | 2008-12-15 10:40:06 -0500 | [diff] [blame] | 560 | case 'l': |
| 561 | f |= US_FL_NOT_LOCKABLE; |
| 562 | break; |
| 563 | case 'm': |
| 564 | f |= US_FL_MAX_SECTORS_64; |
| 565 | break; |
Alan Stern | 21c13a4 | 2011-06-07 11:35:52 -0400 | [diff] [blame] | 566 | case 'n': |
| 567 | f |= US_FL_INITIAL_READ10; |
| 568 | break; |
Alan Stern | c838ea4 | 2008-12-15 10:40:06 -0500 | [diff] [blame] | 569 | case 'o': |
| 570 | f |= US_FL_CAPACITY_OK; |
| 571 | break; |
Namjae Jeon | eaa05df | 2012-07-07 23:05:28 -0400 | [diff] [blame] | 572 | case 'p': |
| 573 | f |= US_FL_WRITE_CACHE; |
| 574 | break; |
Alan Stern | c838ea4 | 2008-12-15 10:40:06 -0500 | [diff] [blame] | 575 | case 'r': |
| 576 | f |= US_FL_IGNORE_RESIDUE; |
| 577 | break; |
| 578 | case 's': |
| 579 | f |= US_FL_SINGLE_LUN; |
| 580 | break; |
Hans de Goede | 5930785 | 2014-09-15 16:04:12 +0200 | [diff] [blame] | 581 | case 't': |
| 582 | f |= US_FL_NO_ATA_1X; |
| 583 | break; |
Hans de Goede | d24d481 | 2013-11-16 12:09:39 +0100 | [diff] [blame] | 584 | case 'u': |
| 585 | f |= US_FL_IGNORE_UAS; |
| 586 | break; |
Alan Stern | c838ea4 | 2008-12-15 10:40:06 -0500 | [diff] [blame] | 587 | case 'w': |
| 588 | f |= US_FL_NO_WP_DETECT; |
| 589 | break; |
Oliver Neukum | 050bc4e | 2016-09-12 15:19:41 +0200 | [diff] [blame] | 590 | case 'y': |
| 591 | f |= US_FL_ALWAYS_SYNC; |
| 592 | break; |
Alan Stern | c838ea4 | 2008-12-15 10:40:06 -0500 | [diff] [blame] | 593 | /* Ignore unrecognized flag characters */ |
| 594 | } |
| 595 | } |
Hans de Goede | d24d481 | 2013-11-16 12:09:39 +0100 | [diff] [blame] | 596 | *fflags = (*fflags & ~mask) | f; |
Alan Stern | d4f373e | 2008-11-10 14:07:45 -0500 | [diff] [blame] | 597 | } |
Hans de Goede | d24d481 | 2013-11-16 12:09:39 +0100 | [diff] [blame] | 598 | EXPORT_SYMBOL_GPL(usb_stor_adjust_quirks); |
Alan Stern | d4f373e | 2008-11-10 14:07:45 -0500 | [diff] [blame] | 599 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | /* Get the unusual_devs entries and the string descriptors */ |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 601 | static int get_device_info(struct us_data *us, const struct usb_device_id *id, |
| 602 | struct us_unusual_dev *unusual_dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 603 | { |
| 604 | struct usb_device *dev = us->pusb_dev; |
| 605 | struct usb_interface_descriptor *idesc = |
| 606 | &us->pusb_intf->cur_altsetting->desc; |
Felipe Contreras | cbd3af5 | 2010-05-16 23:31:06 +0300 | [diff] [blame] | 607 | struct device *pdev = &us->pusb_intf->dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | |
| 609 | /* Store the entries */ |
| 610 | us->unusual_dev = unusual_dev; |
Michal Nazarewicz | 8fa7fd7 | 2010-10-07 13:05:21 +0200 | [diff] [blame] | 611 | us->subclass = (unusual_dev->useProtocol == USB_SC_DEVICE) ? |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | idesc->bInterfaceSubClass : |
| 613 | unusual_dev->useProtocol; |
Michal Nazarewicz | 8fa7fd7 | 2010-10-07 13:05:21 +0200 | [diff] [blame] | 614 | us->protocol = (unusual_dev->useTransport == USB_PR_DEVICE) ? |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 615 | idesc->bInterfaceProtocol : |
| 616 | unusual_dev->useTransport; |
Sebastian Andrzej Siewior | f61870e | 2012-08-28 22:37:13 +0200 | [diff] [blame] | 617 | us->fflags = id->driver_info; |
Hans de Goede | d24d481 | 2013-11-16 12:09:39 +0100 | [diff] [blame] | 618 | usb_stor_adjust_quirks(us->pusb_dev, &us->fflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 619 | |
Alan Stern | 7e4d6c3 | 2008-05-01 15:35:18 -0400 | [diff] [blame] | 620 | if (us->fflags & US_FL_IGNORE_DEVICE) { |
Felipe Contreras | cbd3af5 | 2010-05-16 23:31:06 +0300 | [diff] [blame] | 621 | dev_info(pdev, "device ignored\n"); |
Daniel Drake | 3c33242 | 2006-07-26 13:59:23 +0100 | [diff] [blame] | 622 | return -ENODEV; |
| 623 | } |
| 624 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | /* |
| 626 | * This flag is only needed when we're in high-speed, so let's |
| 627 | * disable it if we're in full-speed |
| 628 | */ |
| 629 | if (dev->speed != USB_SPEED_HIGH) |
Alan Stern | 7e4d6c3 | 2008-05-01 15:35:18 -0400 | [diff] [blame] | 630 | us->fflags &= ~US_FL_GO_SLOW; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 631 | |
Felipe Contreras | 39f2f08 | 2010-05-16 23:31:07 +0300 | [diff] [blame] | 632 | if (us->fflags) |
| 633 | dev_info(pdev, "Quirks match for vid %04x pid %04x: %lx\n", |
| 634 | le16_to_cpu(dev->descriptor.idVendor), |
| 635 | le16_to_cpu(dev->descriptor.idProduct), |
| 636 | us->fflags); |
| 637 | |
Felipe Balbi | f0183a3 | 2016-04-18 13:09:11 +0300 | [diff] [blame] | 638 | /* |
| 639 | * Log a message if a non-generic unusual_dev entry contains an |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 640 | * unnecessary subclass or protocol override. This may stimulate |
| 641 | * reports from users that will help us remove unneeded entries |
| 642 | * from the unusual_devs.h table. |
| 643 | */ |
| 644 | if (id->idVendor || id->idProduct) { |
Arjan van de Ven | 4c4c943 | 2005-11-29 09:43:42 +0100 | [diff] [blame] | 645 | static const char *msgs[3] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 646 | "an unneeded SubClass entry", |
| 647 | "an unneeded Protocol entry", |
| 648 | "unneeded SubClass and Protocol entries"}; |
| 649 | struct usb_device_descriptor *ddesc = &dev->descriptor; |
| 650 | int msg = -1; |
| 651 | |
Michal Nazarewicz | 8fa7fd7 | 2010-10-07 13:05:21 +0200 | [diff] [blame] | 652 | if (unusual_dev->useProtocol != USB_SC_DEVICE && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | us->subclass == idesc->bInterfaceSubClass) |
| 654 | msg += 1; |
Michal Nazarewicz | 8fa7fd7 | 2010-10-07 13:05:21 +0200 | [diff] [blame] | 655 | if (unusual_dev->useTransport != USB_PR_DEVICE && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 656 | us->protocol == idesc->bInterfaceProtocol) |
| 657 | msg += 2; |
Alan Stern | 7e4d6c3 | 2008-05-01 15:35:18 -0400 | [diff] [blame] | 658 | if (msg >= 0 && !(us->fflags & US_FL_NEED_OVERRIDE)) |
Felipe Contreras | cbd3af5 | 2010-05-16 23:31:06 +0300 | [diff] [blame] | 659 | dev_notice(pdev, "This device " |
| 660 | "(%04x,%04x,%04x S %02x P %02x)" |
| 661 | " has %s in unusual_devs.h (kernel" |
| 662 | " %s)\n" |
| 663 | " Please send a copy of this message to " |
| 664 | "<linux-usb@vger.kernel.org> and " |
| 665 | "<usb-storage@lists.one-eyed-alien.net>\n", |
| 666 | le16_to_cpu(ddesc->idVendor), |
| 667 | le16_to_cpu(ddesc->idProduct), |
| 668 | le16_to_cpu(ddesc->bcdDevice), |
| 669 | idesc->bInterfaceSubClass, |
| 670 | idesc->bInterfaceProtocol, |
| 671 | msgs[msg], |
| 672 | utsname()->release); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 673 | } |
Daniel Drake | 3c33242 | 2006-07-26 13:59:23 +0100 | [diff] [blame] | 674 | |
| 675 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 676 | } |
| 677 | |
| 678 | /* Get the transport settings */ |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 679 | static void get_transport(struct us_data *us) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 680 | { |
| 681 | switch (us->protocol) { |
Michal Nazarewicz | 8fa7fd7 | 2010-10-07 13:05:21 +0200 | [diff] [blame] | 682 | case USB_PR_CB: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 683 | us->transport_name = "Control/Bulk"; |
| 684 | us->transport = usb_stor_CB_transport; |
| 685 | us->transport_reset = usb_stor_CB_reset; |
| 686 | us->max_lun = 7; |
| 687 | break; |
| 688 | |
Michal Nazarewicz | 8fa7fd7 | 2010-10-07 13:05:21 +0200 | [diff] [blame] | 689 | case USB_PR_CBI: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 690 | us->transport_name = "Control/Bulk/Interrupt"; |
Alan Stern | 64648a9 | 2008-11-20 14:20:03 -0500 | [diff] [blame] | 691 | us->transport = usb_stor_CB_transport; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 692 | us->transport_reset = usb_stor_CB_reset; |
| 693 | us->max_lun = 7; |
| 694 | break; |
| 695 | |
Michal Nazarewicz | 8fa7fd7 | 2010-10-07 13:05:21 +0200 | [diff] [blame] | 696 | case USB_PR_BULK: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 697 | us->transport_name = "Bulk"; |
| 698 | us->transport = usb_stor_Bulk_transport; |
| 699 | us->transport_reset = usb_stor_Bulk_reset; |
| 700 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 701 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 702 | } |
| 703 | |
| 704 | /* Get the protocol settings */ |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 705 | static void get_protocol(struct us_data *us) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 706 | { |
| 707 | switch (us->subclass) { |
Michal Nazarewicz | 8fa7fd7 | 2010-10-07 13:05:21 +0200 | [diff] [blame] | 708 | case USB_SC_RBC: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 709 | us->protocol_name = "Reduced Block Commands (RBC)"; |
| 710 | us->proto_handler = usb_stor_transparent_scsi_command; |
| 711 | break; |
| 712 | |
Michal Nazarewicz | 8fa7fd7 | 2010-10-07 13:05:21 +0200 | [diff] [blame] | 713 | case USB_SC_8020: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 714 | us->protocol_name = "8020i"; |
Alan Stern | 3dae534 | 2008-11-20 14:22:18 -0500 | [diff] [blame] | 715 | us->proto_handler = usb_stor_pad12_command; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 716 | us->max_lun = 0; |
| 717 | break; |
| 718 | |
Michal Nazarewicz | 8fa7fd7 | 2010-10-07 13:05:21 +0200 | [diff] [blame] | 719 | case USB_SC_QIC: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 720 | us->protocol_name = "QIC-157"; |
Alan Stern | 3dae534 | 2008-11-20 14:22:18 -0500 | [diff] [blame] | 721 | us->proto_handler = usb_stor_pad12_command; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 722 | us->max_lun = 0; |
| 723 | break; |
| 724 | |
Michal Nazarewicz | 8fa7fd7 | 2010-10-07 13:05:21 +0200 | [diff] [blame] | 725 | case USB_SC_8070: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 726 | us->protocol_name = "8070i"; |
Alan Stern | 3dae534 | 2008-11-20 14:22:18 -0500 | [diff] [blame] | 727 | us->proto_handler = usb_stor_pad12_command; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 728 | us->max_lun = 0; |
| 729 | break; |
| 730 | |
Michal Nazarewicz | 8fa7fd7 | 2010-10-07 13:05:21 +0200 | [diff] [blame] | 731 | case USB_SC_SCSI: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 732 | us->protocol_name = "Transparent SCSI"; |
| 733 | us->proto_handler = usb_stor_transparent_scsi_command; |
| 734 | break; |
| 735 | |
Michal Nazarewicz | 8fa7fd7 | 2010-10-07 13:05:21 +0200 | [diff] [blame] | 736 | case USB_SC_UFI: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 737 | us->protocol_name = "Uniform Floppy Interface (UFI)"; |
| 738 | us->proto_handler = usb_stor_ufi_command; |
| 739 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 740 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | } |
| 742 | |
| 743 | /* Get the pipe settings */ |
| 744 | static int get_pipes(struct us_data *us) |
| 745 | { |
Johan Hovold | 80070a4 | 2017-03-17 11:35:49 +0100 | [diff] [blame] | 746 | struct usb_host_interface *alt = us->pusb_intf->cur_altsetting; |
| 747 | struct usb_endpoint_descriptor *ep_in; |
| 748 | struct usb_endpoint_descriptor *ep_out; |
| 749 | struct usb_endpoint_descriptor *ep_int; |
| 750 | int res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 751 | |
| 752 | /* |
Alan Stern | 1096f78 | 2007-01-22 11:58:34 -0500 | [diff] [blame] | 753 | * Find the first endpoint of each type we need. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 754 | * We are expecting a minimum of 2 endpoints - in and out (bulk). |
Alan Stern | 1096f78 | 2007-01-22 11:58:34 -0500 | [diff] [blame] | 755 | * An optional interrupt-in is OK (necessary for CBI protocol). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 756 | * We will ignore any others. |
| 757 | */ |
Johan Hovold | 80070a4 | 2017-03-17 11:35:49 +0100 | [diff] [blame] | 758 | res = usb_find_common_endpoints(alt, &ep_in, &ep_out, NULL, NULL); |
| 759 | if (res) { |
| 760 | usb_stor_dbg(us, "bulk endpoints not found\n"); |
| 761 | return res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 762 | } |
| 763 | |
Johan Hovold | 80070a4 | 2017-03-17 11:35:49 +0100 | [diff] [blame] | 764 | res = usb_find_int_in_endpoint(alt, &ep_int); |
| 765 | if (res && us->protocol == USB_PR_CBI) { |
| 766 | usb_stor_dbg(us, "interrupt endpoint not found\n"); |
| 767 | return res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 768 | } |
| 769 | |
| 770 | /* Calculate and store the pipe values */ |
| 771 | us->send_ctrl_pipe = usb_sndctrlpipe(us->pusb_dev, 0); |
| 772 | us->recv_ctrl_pipe = usb_rcvctrlpipe(us->pusb_dev, 0); |
| 773 | us->send_bulk_pipe = usb_sndbulkpipe(us->pusb_dev, |
Julia Lawall | 2e0fe70 | 2008-12-29 11:22:14 +0100 | [diff] [blame] | 774 | usb_endpoint_num(ep_out)); |
Jeffrin Jose | a163106 | 2012-05-17 00:33:36 +0530 | [diff] [blame] | 775 | us->recv_bulk_pipe = usb_rcvbulkpipe(us->pusb_dev, |
Julia Lawall | 2e0fe70 | 2008-12-29 11:22:14 +0100 | [diff] [blame] | 776 | usb_endpoint_num(ep_in)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 777 | if (ep_int) { |
| 778 | us->recv_intr_pipe = usb_rcvintpipe(us->pusb_dev, |
Julia Lawall | 2e0fe70 | 2008-12-29 11:22:14 +0100 | [diff] [blame] | 779 | usb_endpoint_num(ep_int)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 780 | us->ep_bInterval = ep_int->bInterval; |
| 781 | } |
| 782 | return 0; |
| 783 | } |
| 784 | |
| 785 | /* Initialize all the dynamic resources we need */ |
| 786 | static int usb_stor_acquire_resources(struct us_data *us) |
| 787 | { |
| 788 | int p; |
Alan Stern | 3f13e66 | 2005-10-23 19:43:36 -0700 | [diff] [blame] | 789 | struct task_struct *th; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 790 | |
| 791 | us->current_urb = usb_alloc_urb(0, GFP_KERNEL); |
Wolfram Sang | 792f94f | 2016-08-11 23:14:46 +0200 | [diff] [blame] | 792 | if (!us->current_urb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 793 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 794 | |
Felipe Balbi | f0183a3 | 2016-04-18 13:09:11 +0300 | [diff] [blame] | 795 | /* |
| 796 | * Just before we start our control thread, initialize |
| 797 | * the device if it needs initialization |
| 798 | */ |
Alan Stern | b876aef | 2005-10-23 19:38:56 -0700 | [diff] [blame] | 799 | if (us->unusual_dev->initFunction) { |
| 800 | p = us->unusual_dev->initFunction(us); |
| 801 | if (p) |
| 802 | return p; |
| 803 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 804 | |
| 805 | /* Start up our control thread */ |
Alan Stern | ed76cac | 2007-06-07 17:12:25 -0400 | [diff] [blame] | 806 | th = kthread_run(usb_stor_control_thread, us, "usb-storage"); |
Alan Stern | 3f13e66 | 2005-10-23 19:43:36 -0700 | [diff] [blame] | 807 | if (IS_ERR(th)) { |
Felipe Contreras | cbd3af5 | 2010-05-16 23:31:06 +0300 | [diff] [blame] | 808 | dev_warn(&us->pusb_intf->dev, |
| 809 | "Unable to start control thread\n"); |
Alan Stern | 3f13e66 | 2005-10-23 19:43:36 -0700 | [diff] [blame] | 810 | return PTR_ERR(th); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 811 | } |
Alan Stern | ed76cac | 2007-06-07 17:12:25 -0400 | [diff] [blame] | 812 | us->ctl_thread = th; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 813 | |
| 814 | return 0; |
| 815 | } |
| 816 | |
| 817 | /* Release all our dynamic resources */ |
| 818 | static void usb_stor_release_resources(struct us_data *us) |
| 819 | { |
Felipe Balbi | f0183a3 | 2016-04-18 13:09:11 +0300 | [diff] [blame] | 820 | /* |
| 821 | * Tell the control thread to exit. The SCSI host must |
Alan Stern | 543f781 | 2008-05-08 11:55:59 -0400 | [diff] [blame] | 822 | * already have been removed and the DISCONNECTING flag set |
| 823 | * so that we won't accept any more commands. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 824 | */ |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 825 | usb_stor_dbg(us, "-- sending exit command to thread\n"); |
Alan Stern | 7119e3c | 2008-05-01 15:36:13 -0400 | [diff] [blame] | 826 | complete(&us->cmnd_ready); |
Alan Stern | ed76cac | 2007-06-07 17:12:25 -0400 | [diff] [blame] | 827 | if (us->ctl_thread) |
| 828 | kthread_stop(us->ctl_thread); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 829 | |
| 830 | /* Call the destructor routine, if it exists */ |
| 831 | if (us->extra_destructor) { |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 832 | usb_stor_dbg(us, "-- calling extra_destructor()\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 833 | us->extra_destructor(us->extra); |
| 834 | } |
| 835 | |
| 836 | /* Free the extra data and the URB */ |
| 837 | kfree(us->extra); |
| 838 | usb_free_urb(us->current_urb); |
| 839 | } |
| 840 | |
| 841 | /* Dissociate from the USB device */ |
| 842 | static void dissociate_dev(struct us_data *us) |
| 843 | { |
Alan Stern | 0ede76f | 2010-03-05 15:10:17 -0500 | [diff] [blame] | 844 | /* Free the buffers */ |
| 845 | kfree(us->cr); |
Daniel Mack | 997ea58 | 2010-04-12 13:17:25 +0200 | [diff] [blame] | 846 | usb_free_coherent(us->pusb_dev, US_IOBUF_SIZE, us->iobuf, us->iobuf_dma); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 847 | |
| 848 | /* Remove our private data from the interface */ |
| 849 | usb_set_intfdata(us->pusb_intf, NULL); |
| 850 | } |
| 851 | |
Felipe Balbi | f0183a3 | 2016-04-18 13:09:11 +0300 | [diff] [blame] | 852 | /* |
| 853 | * First stage of disconnect processing: stop SCSI scanning, |
Alan Stern | 543f781 | 2008-05-08 11:55:59 -0400 | [diff] [blame] | 854 | * remove the host, and stop accepting new commands |
| 855 | */ |
Matthew Dharm | 77f4632 | 2005-07-28 14:44:29 -0700 | [diff] [blame] | 856 | static void quiesce_and_remove_host(struct us_data *us) |
| 857 | { |
Alan Stern | eecd11e | 2006-06-19 14:50:15 -0400 | [diff] [blame] | 858 | struct Scsi_Host *host = us_to_host(us); |
| 859 | |
Alan Stern | 543f781 | 2008-05-08 11:55:59 -0400 | [diff] [blame] | 860 | /* If the device is really gone, cut short reset delays */ |
Alan Stern | bb94a40 | 2012-02-21 13:16:32 -0500 | [diff] [blame] | 861 | if (us->pusb_dev->state == USB_STATE_NOTATTACHED) { |
Alan Stern | 543f781 | 2008-05-08 11:55:59 -0400 | [diff] [blame] | 862 | set_bit(US_FLIDX_DISCONNECTING, &us->dflags); |
Alan Stern | bb94a40 | 2012-02-21 13:16:32 -0500 | [diff] [blame] | 863 | wake_up(&us->delay_wait); |
| 864 | } |
Alan Stern | 543f781 | 2008-05-08 11:55:59 -0400 | [diff] [blame] | 865 | |
Felipe Balbi | f0183a3 | 2016-04-18 13:09:11 +0300 | [diff] [blame] | 866 | /* |
| 867 | * Prevent SCSI scanning (if it hasn't started yet) |
Alan Stern | bb94a40 | 2012-02-21 13:16:32 -0500 | [diff] [blame] | 868 | * or wait for the SCSI-scanning routine to stop. |
Alan Stern | 543f781 | 2008-05-08 11:55:59 -0400 | [diff] [blame] | 869 | */ |
Alan Stern | bb94a40 | 2012-02-21 13:16:32 -0500 | [diff] [blame] | 870 | cancel_delayed_work_sync(&us->scan_dwork); |
| 871 | |
| 872 | /* Balance autopm calls if scanning was cancelled */ |
| 873 | if (test_bit(US_FLIDX_SCAN_PENDING, &us->dflags)) |
| 874 | usb_autopm_put_interface_no_suspend(us->pusb_intf); |
Alan Stern | 543f781 | 2008-05-08 11:55:59 -0400 | [diff] [blame] | 875 | |
Felipe Balbi | f0183a3 | 2016-04-18 13:09:11 +0300 | [diff] [blame] | 876 | /* |
| 877 | * Removing the host will perform an orderly shutdown: caches |
Alan Stern | 543f781 | 2008-05-08 11:55:59 -0400 | [diff] [blame] | 878 | * synchronized, disks spun down, etc. |
| 879 | */ |
| 880 | scsi_remove_host(host); |
| 881 | |
Felipe Balbi | f0183a3 | 2016-04-18 13:09:11 +0300 | [diff] [blame] | 882 | /* |
| 883 | * Prevent any new commands from being accepted and cut short |
Alan Stern | 543f781 | 2008-05-08 11:55:59 -0400 | [diff] [blame] | 884 | * reset delays. |
| 885 | */ |
Alan Stern | eecd11e | 2006-06-19 14:50:15 -0400 | [diff] [blame] | 886 | scsi_lock(host); |
Alan Stern | 7e4d6c3 | 2008-05-01 15:35:18 -0400 | [diff] [blame] | 887 | set_bit(US_FLIDX_DISCONNECTING, &us->dflags); |
Alan Stern | eecd11e | 2006-06-19 14:50:15 -0400 | [diff] [blame] | 888 | scsi_unlock(host); |
Matthew Dharm | 77f4632 | 2005-07-28 14:44:29 -0700 | [diff] [blame] | 889 | wake_up(&us->delay_wait); |
Matthew Dharm | 77f4632 | 2005-07-28 14:44:29 -0700 | [diff] [blame] | 890 | } |
| 891 | |
| 892 | /* Second stage of disconnect processing: deallocate all resources */ |
| 893 | static void release_everything(struct us_data *us) |
| 894 | { |
| 895 | usb_stor_release_resources(us); |
| 896 | dissociate_dev(us); |
| 897 | |
Felipe Balbi | f0183a3 | 2016-04-18 13:09:11 +0300 | [diff] [blame] | 898 | /* |
| 899 | * Drop our reference to the host; the SCSI core will free it |
| 900 | * (and "us" along with it) when the refcount becomes 0. |
| 901 | */ |
Matthew Dharm | 77f4632 | 2005-07-28 14:44:29 -0700 | [diff] [blame] | 902 | scsi_host_put(us_to_host(us)); |
| 903 | } |
| 904 | |
Alan Stern | bb94a40 | 2012-02-21 13:16:32 -0500 | [diff] [blame] | 905 | /* Delayed-work routine to carry out SCSI-device scanning */ |
| 906 | static void usb_stor_scan_dwork(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 907 | { |
Alan Stern | bb94a40 | 2012-02-21 13:16:32 -0500 | [diff] [blame] | 908 | struct us_data *us = container_of(work, struct us_data, |
| 909 | scan_dwork.work); |
Felipe Contreras | cbd3af5 | 2010-05-16 23:31:06 +0300 | [diff] [blame] | 910 | struct device *dev = &us->pusb_intf->dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 911 | |
Alan Stern | bb94a40 | 2012-02-21 13:16:32 -0500 | [diff] [blame] | 912 | dev_dbg(dev, "starting scan\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 913 | |
Alan Stern | bb94a40 | 2012-02-21 13:16:32 -0500 | [diff] [blame] | 914 | /* For bulk-only devices, determine the max LUN value */ |
Mark Knibbs | 646a384 | 2014-11-08 21:39:55 +0000 | [diff] [blame] | 915 | if (us->protocol == USB_PR_BULK && |
| 916 | !(us->fflags & US_FL_SINGLE_LUN) && |
| 917 | !(us->fflags & US_FL_SCM_MULT_TARG)) { |
Alan Stern | bb94a40 | 2012-02-21 13:16:32 -0500 | [diff] [blame] | 918 | mutex_lock(&us->dev_mutex); |
| 919 | us->max_lun = usb_stor_Bulk_max_lun(us); |
Oliver Neukum | ec37132 | 2015-02-10 09:27:59 +0100 | [diff] [blame] | 920 | /* |
| 921 | * Allow proper scanning of devices that present more than 8 LUNs |
Felipe Balbi | f0183a3 | 2016-04-18 13:09:11 +0300 | [diff] [blame] | 922 | * While not affecting other devices that may need the previous |
| 923 | * behavior |
Oliver Neukum | ec37132 | 2015-02-10 09:27:59 +0100 | [diff] [blame] | 924 | */ |
| 925 | if (us->max_lun >= 8) |
| 926 | us_to_host(us)->max_lun = us->max_lun+1; |
Alan Stern | bb94a40 | 2012-02-21 13:16:32 -0500 | [diff] [blame] | 927 | mutex_unlock(&us->dev_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 928 | } |
Alan Stern | bb94a40 | 2012-02-21 13:16:32 -0500 | [diff] [blame] | 929 | scsi_scan_host(us_to_host(us)); |
| 930 | dev_dbg(dev, "scan complete\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 931 | |
Alan Stern | bb94a40 | 2012-02-21 13:16:32 -0500 | [diff] [blame] | 932 | /* Should we unbind if no devices were detected? */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 933 | |
Alan Stern | f283925 | 2010-07-28 17:12:39 -0400 | [diff] [blame] | 934 | usb_autopm_put_interface(us->pusb_intf); |
Alan Stern | bb94a40 | 2012-02-21 13:16:32 -0500 | [diff] [blame] | 935 | clear_bit(US_FLIDX_SCAN_PENDING, &us->dflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 936 | } |
| 937 | |
David Vrabel | 4c1bd3d | 2009-08-24 14:44:30 +0100 | [diff] [blame] | 938 | static unsigned int usb_stor_sg_tablesize(struct usb_interface *intf) |
| 939 | { |
| 940 | struct usb_device *usb_dev = interface_to_usbdev(intf); |
| 941 | |
| 942 | if (usb_dev->bus->sg_tablesize) { |
| 943 | return usb_dev->bus->sg_tablesize; |
| 944 | } |
| 945 | return SG_ALL; |
| 946 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 947 | |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 948 | /* First part of general USB mass-storage probing */ |
| 949 | int usb_stor_probe1(struct us_data **pus, |
| 950 | struct usb_interface *intf, |
| 951 | const struct usb_device_id *id, |
Akinobu Mita | aa519be | 2015-05-06 18:24:21 +0900 | [diff] [blame] | 952 | struct us_unusual_dev *unusual_dev, |
| 953 | struct scsi_host_template *sht) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 954 | { |
| 955 | struct Scsi_Host *host; |
| 956 | struct us_data *us; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 957 | int result; |
Pete Zaitcev | a00828e | 2005-10-22 20:15:09 -0700 | [diff] [blame] | 958 | |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 959 | dev_info(&intf->dev, "USB Mass Storage device detected\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 960 | |
| 961 | /* |
| 962 | * Ask the SCSI layer to allocate a host structure, with extra |
| 963 | * space at the end for our private us_data structure. |
| 964 | */ |
Akinobu Mita | aa519be | 2015-05-06 18:24:21 +0900 | [diff] [blame] | 965 | host = scsi_host_alloc(sht, sizeof(*us)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 966 | if (!host) { |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 967 | dev_warn(&intf->dev, "Unable to allocate the scsi host\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 968 | return -ENOMEM; |
| 969 | } |
| 970 | |
Richard Sharpe | 17f06022 | 2007-10-10 10:56:28 -0700 | [diff] [blame] | 971 | /* |
| 972 | * Allow 16-byte CDBs and thus > 2TB |
| 973 | */ |
| 974 | host->max_cmd_len = 16; |
David Vrabel | 4c1bd3d | 2009-08-24 14:44:30 +0100 | [diff] [blame] | 975 | host->sg_tablesize = usb_stor_sg_tablesize(intf); |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 976 | *pus = us = host_to_us(host); |
Arjan van de Ven | 4186ecf | 2006-01-11 15:55:29 +0100 | [diff] [blame] | 977 | mutex_init(&(us->dev_mutex)); |
Ming Lei | c825bab | 2012-03-19 15:20:57 +0800 | [diff] [blame] | 978 | us_set_lock_class(&us->dev_mutex, intf); |
Alan Stern | 7119e3c | 2008-05-01 15:36:13 -0400 | [diff] [blame] | 979 | init_completion(&us->cmnd_ready); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 980 | init_completion(&(us->notify)); |
| 981 | init_waitqueue_head(&us->delay_wait); |
Alan Stern | bb94a40 | 2012-02-21 13:16:32 -0500 | [diff] [blame] | 982 | INIT_DELAYED_WORK(&us->scan_dwork, usb_stor_scan_dwork); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 983 | |
| 984 | /* Associate the us_data structure with the USB device */ |
| 985 | result = associate_dev(us, intf); |
| 986 | if (result) |
| 987 | goto BadDevice; |
| 988 | |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 989 | /* Get the unusual_devs entries and the descriptors */ |
| 990 | result = get_device_info(us, id, unusual_dev); |
Daniel Drake | 3c33242 | 2006-07-26 13:59:23 +0100 | [diff] [blame] | 991 | if (result) |
| 992 | goto BadDevice; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 993 | |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 994 | /* Get standard transport and protocol settings */ |
| 995 | get_transport(us); |
| 996 | get_protocol(us); |
| 997 | |
Felipe Balbi | f0183a3 | 2016-04-18 13:09:11 +0300 | [diff] [blame] | 998 | /* |
| 999 | * Give the caller a chance to fill in specialized transport |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 1000 | * or protocol settings. |
| 1001 | */ |
| 1002 | return 0; |
| 1003 | |
| 1004 | BadDevice: |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 1005 | usb_stor_dbg(us, "storage_probe() failed\n"); |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 1006 | release_everything(us); |
| 1007 | return result; |
| 1008 | } |
| 1009 | EXPORT_SYMBOL_GPL(usb_stor_probe1); |
| 1010 | |
| 1011 | /* Second part of general USB mass-storage probing */ |
| 1012 | int usb_stor_probe2(struct us_data *us) |
| 1013 | { |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 1014 | int result; |
Felipe Contreras | cbd3af5 | 2010-05-16 23:31:06 +0300 | [diff] [blame] | 1015 | struct device *dev = &us->pusb_intf->dev; |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 1016 | |
| 1017 | /* Make sure the transport and protocol have both been set */ |
| 1018 | if (!us->transport || !us->proto_handler) { |
| 1019 | result = -ENXIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1020 | goto BadDevice; |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 1021 | } |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 1022 | usb_stor_dbg(us, "Transport: %s\n", us->transport_name); |
| 1023 | usb_stor_dbg(us, "Protocol: %s\n", us->protocol_name); |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 1024 | |
Mark Knibbs | 646a384 | 2014-11-08 21:39:55 +0000 | [diff] [blame] | 1025 | if (us->fflags & US_FL_SCM_MULT_TARG) { |
| 1026 | /* |
| 1027 | * SCM eUSCSI bridge devices can have different numbers |
| 1028 | * of LUNs on different targets; allow all to be probed. |
| 1029 | */ |
| 1030 | us->max_lun = 7; |
| 1031 | /* The eUSCSI itself has ID 7, so avoid scanning that */ |
| 1032 | us_to_host(us)->this_id = 7; |
| 1033 | /* max_id is 8 initially, so no need to set it here */ |
| 1034 | } else { |
| 1035 | /* In the normal case there is only a single target */ |
| 1036 | us_to_host(us)->max_id = 1; |
| 1037 | /* |
| 1038 | * Like Windows, we won't store the LUN bits in CDB[1] for |
| 1039 | * SCSI-2 devices using the Bulk-Only transport (even though |
| 1040 | * this violates the SCSI spec). |
| 1041 | */ |
| 1042 | if (us->transport == usb_stor_Bulk_transport) |
| 1043 | us_to_host(us)->no_scsi2_lun_in_cdb = 1; |
| 1044 | } |
| 1045 | |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 1046 | /* fix for single-lun devices */ |
| 1047 | if (us->fflags & US_FL_SINGLE_LUN) |
| 1048 | us->max_lun = 0; |
| 1049 | |
| 1050 | /* Find the endpoints and calculate pipe values */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1051 | result = get_pipes(us); |
| 1052 | if (result) |
| 1053 | goto BadDevice; |
| 1054 | |
Alan Stern | 21c13a4 | 2011-06-07 11:35:52 -0400 | [diff] [blame] | 1055 | /* |
| 1056 | * If the device returns invalid data for the first READ(10) |
| 1057 | * command, indicate the command should be retried. |
| 1058 | */ |
| 1059 | if (us->fflags & US_FL_INITIAL_READ10) |
| 1060 | set_bit(US_FLIDX_REDO_READ10, &us->dflags); |
| 1061 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1062 | /* Acquire all the other resources and add the host */ |
| 1063 | result = usb_stor_acquire_resources(us); |
| 1064 | if (result) |
| 1065 | goto BadDevice; |
Heiner Kallweit | a094760 | 2016-08-03 21:46:47 +0200 | [diff] [blame] | 1066 | usb_autopm_get_interface_no_resume(us->pusb_intf); |
Matthew Wilcox | 00fa43e | 2009-09-24 16:19:11 -0600 | [diff] [blame] | 1067 | snprintf(us->scsi_name, sizeof(us->scsi_name), "usb-storage %s", |
| 1068 | dev_name(&us->pusb_intf->dev)); |
Felipe Contreras | cbd3af5 | 2010-05-16 23:31:06 +0300 | [diff] [blame] | 1069 | result = scsi_add_host(us_to_host(us), dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1070 | if (result) { |
Felipe Contreras | cbd3af5 | 2010-05-16 23:31:06 +0300 | [diff] [blame] | 1071 | dev_warn(dev, |
| 1072 | "Unable to add the scsi host\n"); |
Heiner Kallweit | a094760 | 2016-08-03 21:46:47 +0200 | [diff] [blame] | 1073 | goto HostAddErr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1074 | } |
| 1075 | |
Alan Stern | bb94a40 | 2012-02-21 13:16:32 -0500 | [diff] [blame] | 1076 | /* Submit the delayed_work for SCSI-device scanning */ |
Alan Stern | bb94a40 | 2012-02-21 13:16:32 -0500 | [diff] [blame] | 1077 | set_bit(US_FLIDX_SCAN_PENDING, &us->dflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1078 | |
Alan Stern | bb94a40 | 2012-02-21 13:16:32 -0500 | [diff] [blame] | 1079 | if (delay_use > 0) |
| 1080 | dev_dbg(dev, "waiting for device to settle before scanning\n"); |
| 1081 | queue_delayed_work(system_freezable_wq, &us->scan_dwork, |
| 1082 | delay_use * HZ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1083 | return 0; |
| 1084 | |
| 1085 | /* We come here if there are any problems */ |
Heiner Kallweit | a094760 | 2016-08-03 21:46:47 +0200 | [diff] [blame] | 1086 | HostAddErr: |
| 1087 | usb_autopm_put_interface_no_suspend(us->pusb_intf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1088 | BadDevice: |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 1089 | usb_stor_dbg(us, "storage_probe() failed\n"); |
Matthew Dharm | 77f4632 | 2005-07-28 14:44:29 -0700 | [diff] [blame] | 1090 | release_everything(us); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1091 | return result; |
| 1092 | } |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 1093 | EXPORT_SYMBOL_GPL(usb_stor_probe2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1094 | |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 1095 | /* Handle a USB mass-storage disconnect */ |
| 1096 | void usb_stor_disconnect(struct usb_interface *intf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1097 | { |
| 1098 | struct us_data *us = usb_get_intfdata(intf); |
| 1099 | |
Matthew Dharm | 77f4632 | 2005-07-28 14:44:29 -0700 | [diff] [blame] | 1100 | quiesce_and_remove_host(us); |
| 1101 | release_everything(us); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1102 | } |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 1103 | EXPORT_SYMBOL_GPL(usb_stor_disconnect); |
| 1104 | |
Akinobu Mita | aa519be | 2015-05-06 18:24:21 +0900 | [diff] [blame] | 1105 | static struct scsi_host_template usb_stor_host_template; |
| 1106 | |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 1107 | /* The main probe routine for standard devices */ |
| 1108 | static int storage_probe(struct usb_interface *intf, |
| 1109 | const struct usb_device_id *id) |
| 1110 | { |
Huajun Li | fd7ff36 | 2012-01-14 10:16:40 +0800 | [diff] [blame] | 1111 | struct us_unusual_dev *unusual_dev; |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 1112 | struct us_data *us; |
| 1113 | int result; |
Huajun Li | fd7ff36 | 2012-01-14 10:16:40 +0800 | [diff] [blame] | 1114 | int size; |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 1115 | |
Hans de Goede | 5bfd5b5 | 2013-10-21 09:40:48 +0100 | [diff] [blame] | 1116 | /* If uas is enabled and this device can do uas then ignore it. */ |
| 1117 | #if IS_ENABLED(CONFIG_USB_UAS) |
Hans de Goede | a5011d4 | 2015-04-21 11:20:30 +0200 | [diff] [blame] | 1118 | if (uas_use_uas_driver(intf, id, NULL)) |
Hans de Goede | 5bfd5b5 | 2013-10-21 09:40:48 +0100 | [diff] [blame] | 1119 | return -ENXIO; |
| 1120 | #endif |
| 1121 | |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 1122 | /* |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 1123 | * If the device isn't standard (is handled by a subdriver |
| 1124 | * module) then don't accept it. |
| 1125 | */ |
Sebastian Andrzej Siewior | f61870e | 2012-08-28 22:37:13 +0200 | [diff] [blame] | 1126 | if (usb_usual_ignore_device(intf)) |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 1127 | return -ENXIO; |
| 1128 | |
| 1129 | /* |
| 1130 | * Call the general probe procedures. |
| 1131 | * |
| 1132 | * The unusual_dev_list array is parallel to the usb_storage_usb_ids |
| 1133 | * table, so we use the index of the id entry to find the |
| 1134 | * corresponding unusual_devs entry. |
| 1135 | */ |
Huajun Li | fd7ff36 | 2012-01-14 10:16:40 +0800 | [diff] [blame] | 1136 | |
| 1137 | size = ARRAY_SIZE(us_unusual_dev_list); |
| 1138 | if (id >= usb_storage_usb_ids && id < usb_storage_usb_ids + size) { |
| 1139 | unusual_dev = (id - usb_storage_usb_ids) + us_unusual_dev_list; |
| 1140 | } else { |
| 1141 | unusual_dev = &for_dynamic_ids; |
| 1142 | |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 1143 | dev_dbg(&intf->dev, "Use Bulk-Only transport with the Transparent SCSI protocol for dynamic id: 0x%04x 0x%04x\n", |
Huajun Li | fd7ff36 | 2012-01-14 10:16:40 +0800 | [diff] [blame] | 1144 | id->idVendor, id->idProduct); |
| 1145 | } |
| 1146 | |
Akinobu Mita | aa519be | 2015-05-06 18:24:21 +0900 | [diff] [blame] | 1147 | result = usb_stor_probe1(&us, intf, id, unusual_dev, |
| 1148 | &usb_stor_host_template); |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 1149 | if (result) |
| 1150 | return result; |
| 1151 | |
| 1152 | /* No special transport or protocol settings in the main module */ |
| 1153 | |
| 1154 | result = usb_stor_probe2(us); |
| 1155 | return result; |
| 1156 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1157 | |
Alan Stern | ce2596d | 2005-10-23 19:41:39 -0700 | [diff] [blame] | 1158 | static struct usb_driver usb_storage_driver = { |
Akinobu Mita | aa519be | 2015-05-06 18:24:21 +0900 | [diff] [blame] | 1159 | .name = DRV_NAME, |
Alan Stern | ce2596d | 2005-10-23 19:41:39 -0700 | [diff] [blame] | 1160 | .probe = storage_probe, |
Alan Stern | e6e244b | 2009-02-12 14:47:44 -0500 | [diff] [blame] | 1161 | .disconnect = usb_stor_disconnect, |
| 1162 | .suspend = usb_stor_suspend, |
| 1163 | .resume = usb_stor_resume, |
| 1164 | .reset_resume = usb_stor_reset_resume, |
| 1165 | .pre_reset = usb_stor_pre_reset, |
| 1166 | .post_reset = usb_stor_post_reset, |
| 1167 | .id_table = usb_storage_usb_ids, |
Alan Stern | f283925 | 2010-07-28 17:12:39 -0400 | [diff] [blame] | 1168 | .supports_autosuspend = 1, |
Alan Stern | 543f781 | 2008-05-08 11:55:59 -0400 | [diff] [blame] | 1169 | .soft_unbind = 1, |
Alan Stern | ce2596d | 2005-10-23 19:41:39 -0700 | [diff] [blame] | 1170 | }; |
| 1171 | |
Akinobu Mita | aa519be | 2015-05-06 18:24:21 +0900 | [diff] [blame] | 1172 | module_usb_stor_driver(usb_storage_driver, usb_stor_host_template, DRV_NAME); |