usb_device.h (11932B) - Raw
1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2008-2019 Hans Petter Selasky. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #ifndef _USB_DEVICE_H_ 29 #define _USB_DEVICE_H_ 30 31 #ifndef USB_GLOBAL_INCLUDE_FILE 32 #include <dev/usb/usb_core.h> 33 #include <dev/usb/usb_busdma.h> 34 #include <dev/usb/usb_transfer.h> 35 #endif 36 37 struct usb_bus_methods; 38 struct usb_config_descriptor; 39 struct usb_device; /* linux compat */ 40 struct usb_fs_privdata; 41 struct usb_hw_ep_profile; 42 struct usb_symlink; /* UGEN */ 43 44 #define USB_CTRL_XFER_MAX 2 45 46 /* "usb_config_parse()" commands */ 47 48 #define USB_CFG_ALLOC 0 49 #define USB_CFG_FREE 1 50 #define USB_CFG_INIT 2 51 52 /* "usb_unconfigure()" flags */ 53 54 #define USB_UNCFG_FLAG_NONE 0x00 55 #define USB_UNCFG_FLAG_FREE_EP0 0x02 /* endpoint zero is freed */ 56 57 struct usb_udev_msg { 58 struct usb_proc_msg hdr; 59 struct usb_device *udev; 60 }; 61 62 /* The following four structures makes up a tree, where we have the 63 * leaf structure, "usb_host_endpoint", first, and the root structure, 64 * "usb_device", last. The four structures below mirror the structure 65 * of the USB descriptors belonging to an USB configuration. Please 66 * refer to the USB specification for a definition of "endpoints" and 67 * "interfaces". 68 */ 69 struct usb_host_endpoint { 70 struct usb_endpoint_descriptor desc; 71 TAILQ_HEAD(, urb) bsd_urb_list; 72 struct usb_xfer *bsd_xfer[2]; 73 uint8_t *extra; /* Extra descriptors */ 74 usb_frlength_t fbsd_buf_size; 75 uint16_t extralen; 76 uint8_t bsd_iface_index; 77 } __aligned(USB_HOST_ALIGN); 78 79 struct usb_host_interface { 80 struct usb_interface_descriptor desc; 81 /* the following array has size "desc.bNumEndpoint" */ 82 struct usb_host_endpoint *endpoint; 83 const char *string; /* iInterface string, if present */ 84 uint8_t *extra; /* Extra descriptors */ 85 uint16_t extralen; 86 uint8_t bsd_iface_index; 87 } __aligned(USB_HOST_ALIGN); 88 89 /* 90 * The following structure defines the USB device flags. 91 */ 92 struct usb_device_flags { 93 enum usb_hc_mode usb_mode; /* host or device mode */ 94 uint8_t self_powered:1; /* set if USB device is self powered */ 95 uint8_t no_strings:1; /* set if USB device does not support 96 * strings */ 97 uint8_t remote_wakeup:1; /* set if remote wakeup is enabled */ 98 uint8_t uq_bus_powered:1; /* set if BUS powered quirk is present */ 99 100 /* 101 * NOTE: Although the flags below will reach the same value 102 * over time, but the instant values may differ, and 103 * consequently the flags cannot be merged into one! 104 */ 105 uint8_t peer_suspended:1; /* set if peer is suspended */ 106 uint8_t self_suspended:1; /* set if self is suspended */ 107 }; 108 109 /* 110 * The following structure is used for power-save purposes. The data 111 * in this structure is protected by the USB BUS lock. 112 */ 113 struct usb_power_save { 114 usb_ticks_t last_xfer_time; /* copy of "ticks" */ 115 usb_size_t type_refs[4]; /* transfer reference count */ 116 usb_size_t read_refs; /* data read references */ 117 usb_size_t write_refs; /* data write references */ 118 }; 119 120 /* 121 * The following structure is used when trying to allocate hardware 122 * endpoints for an USB configuration in USB device side mode. 123 */ 124 struct usb_hw_ep_scratch_sub { 125 const struct usb_hw_ep_profile *pf; 126 uint16_t max_frame_size; 127 uint8_t hw_endpoint_out; 128 uint8_t hw_endpoint_in; 129 uint8_t needs_ep_type; 130 uint8_t needs_in:1; 131 uint8_t needs_out:1; 132 }; 133 134 /* 135 * The following structure is used when trying to allocate hardware 136 * endpoints for an USB configuration in USB device side mode. 137 */ 138 struct usb_hw_ep_scratch { 139 struct usb_hw_ep_scratch_sub ep[USB_EP_MAX]; 140 struct usb_hw_ep_scratch_sub *ep_max; 141 struct usb_config_descriptor *cd; 142 struct usb_device *udev; 143 const struct usb_bus_methods *methods; 144 uint8_t bmOutAlloc[(USB_EP_MAX + 15) / 16]; 145 uint8_t bmInAlloc[(USB_EP_MAX + 15) / 16]; 146 }; 147 148 /* 149 * The following structure is used when generating USB descriptors 150 * from USB templates. 151 */ 152 struct usb_temp_setup { 153 void *buf; 154 usb_size_t size; 155 enum usb_dev_speed usb_speed; 156 uint8_t self_powered; 157 uint8_t bNumEndpoints; 158 uint8_t bInterfaceNumber; 159 uint8_t bAlternateSetting; 160 uint8_t bConfigurationValue; 161 usb_error_t err; 162 }; 163 164 /* 165 * The scratch area for USB devices. Access to this structure is 166 * protected by the control SX lock. 167 */ 168 union usb_device_scratch { 169 struct usb_hw_ep_scratch hw_ep_scratch[1]; 170 struct usb_temp_setup temp_setup[1]; 171 struct { 172 struct usb_xfer dummy; 173 struct usb_setup_params parm; 174 } xfer_setup[1]; 175 uint8_t data[255]; 176 }; 177 178 /* 179 * Helper structure to keep track of USB device statistics. 180 */ 181 struct usb_device_statistics { 182 uint32_t uds_requests[4]; 183 }; 184 185 /* 186 * The following structure defines an USB device. There exists one of 187 * these structures for every USB device. 188 */ 189 struct usb_device { 190 /* statistics */ 191 struct usb_device_statistics stats_err; 192 struct usb_device_statistics stats_ok; 193 struct usb_device_statistics stats_cancelled; 194 195 /* generic clear stall message */ 196 struct usb_udev_msg cs_msg[2]; 197 struct sx enum_sx; 198 struct sx sr_sx; 199 struct sx ctrl_sx; 200 struct mtx device_mtx; 201 struct cv ctrlreq_cv; 202 struct cv ref_cv; 203 #if (USB_HAVE_FIXED_IFACE == 0) 204 struct usb_interface *ifaces; 205 #else 206 struct usb_interface ifaces[USB_IFACE_MAX]; 207 #endif 208 struct usb_endpoint ctrl_ep; /* Control Endpoint 0 */ 209 #if (USB_HAVE_FIXED_ENDPOINT == 0) 210 struct usb_endpoint *endpoints; 211 #else 212 struct usb_endpoint endpoints[USB_MAX_EP_UNITS]; 213 #endif 214 struct usb_power_save pwr_save;/* power save data */ 215 struct usb_bus *bus; /* our USB BUS */ 216 device_t parent_dev; /* parent device */ 217 struct usb_device *parent_hub; 218 struct usb_device *parent_hs_hub; /* high-speed parent HUB */ 219 struct usb_config_descriptor *cdesc; /* full config descr */ 220 struct usb_hub *hub; /* only if this is a hub */ 221 struct usb_xfer *ctrl_xfer[USB_CTRL_XFER_MAX]; 222 struct usb_temp_data *usb_template_ptr; 223 struct usb_endpoint *ep_curr; /* current clear stall endpoint */ 224 #if USB_HAVE_UGEN 225 struct usb_fifo *fifo[USB_FIFO_MAX]; 226 struct usb_symlink *ugen_symlink; /* our generic symlink */ 227 struct usb_fs_privdata *ctrl_dev; /* Control Endpoint 0 device node */ 228 LIST_HEAD(,usb_fs_privdata) pd_list; 229 char ugen_name[20]; /* name of ugenX.X device */ 230 #endif 231 usb_ticks_t plugtime; /* copy of "ticks" */ 232 233 enum usb_dev_state state; 234 enum usb_dev_speed speed; 235 uint16_t refcount; 236 #define USB_DEV_REF_MAX 0xffff 237 238 uint16_t power; /* mA the device uses */ 239 uint16_t langid; /* language for strings */ 240 uint16_t autoQuirk[USB_MAX_AUTO_QUIRK]; /* dynamic quirks */ 241 242 uint8_t address; /* device addess */ 243 uint8_t device_index; /* device index in "bus->devices" */ 244 uint8_t controller_slot_id; /* controller specific value */ 245 uint8_t next_config_index; /* used by USB_RE_ENUM_SET_CONFIG */ 246 uint8_t curr_config_index; /* current configuration index */ 247 uint8_t curr_config_no; /* current configuration number */ 248 uint8_t depth; /* distance from root HUB */ 249 uint8_t port_index; /* parent HUB port index */ 250 uint8_t port_no; /* parent HUB port number */ 251 uint8_t hs_hub_addr; /* high-speed HUB address */ 252 uint8_t hs_port_no; /* high-speed HUB port number */ 253 uint8_t driver_added_refcount; /* our driver added generation count */ 254 uint8_t power_mode; /* see USB_POWER_XXX */ 255 uint8_t re_enumerate_wait; /* set if re-enum. is in progress */ 256 #define USB_RE_ENUM_DONE 0 257 #define USB_RE_ENUM_START 1 258 #define USB_RE_ENUM_PWR_OFF 2 259 #define USB_RE_ENUM_SET_CONFIG 3 260 uint8_t ifaces_max; /* number of interfaces present */ 261 uint8_t endpoints_max; /* number of endpoints present */ 262 263 /* the "flags" field is write-protected by "bus->mtx" */ 264 265 struct usb_device_flags flags; 266 267 struct usb_endpoint_descriptor ctrl_ep_desc; /* for endpoint 0 */ 268 struct usb_endpoint_ss_comp_descriptor ctrl_ep_comp_desc; /* for endpoint 0 */ 269 struct usb_device_descriptor ddesc; /* device descriptor */ 270 271 char *serial; /* serial number, can be NULL */ 272 char *manufacturer; /* manufacturer string, can be NULL */ 273 char *product; /* product string, can be NULL */ 274 275 #if USB_HAVE_COMPAT_LINUX 276 /* Linux compat */ 277 struct usb_device_descriptor descriptor; 278 struct usb_host_endpoint ep0; 279 struct usb_interface *linux_iface_start; 280 struct usb_interface *linux_iface_end; 281 struct usb_host_endpoint *linux_endpoint_start; 282 struct usb_host_endpoint *linux_endpoint_end; 283 uint16_t devnum; 284 #endif 285 286 uint32_t clear_stall_errors; /* number of clear-stall failures */ 287 288 union usb_device_scratch scratch; 289 290 #if (USB_HAVE_FIXED_CONFIG != 0) 291 uint32_t config_data[(USB_CONFIG_MAX + 3) / 4]; 292 #endif 293 }; 294 295 /* globals */ 296 297 extern int usb_template; 298 299 /* function prototypes */ 300 301 const char *usb_statestr(enum usb_dev_state state); 302 struct usb_device *usb_alloc_device(device_t parent_dev, struct usb_bus *bus, 303 struct usb_device *parent_hub, uint8_t depth, 304 uint8_t port_index, uint8_t port_no, 305 enum usb_dev_speed speed, enum usb_hc_mode mode); 306 #if USB_HAVE_UGEN 307 struct usb_fs_privdata *usb_make_dev(struct usb_device *, const char *, 308 int, int, int, uid_t, gid_t, int); 309 void usb_destroy_dev(struct usb_fs_privdata *); 310 void usb_destroy_dev_sync(struct usb_fs_privdata *); 311 #endif 312 usb_error_t usb_probe_and_attach(struct usb_device *udev, 313 uint8_t iface_index); 314 void usb_detach_device(struct usb_device *, uint8_t, uint8_t); 315 usb_error_t usb_reset_iface_endpoints(struct usb_device *udev, 316 uint8_t iface_index); 317 usb_error_t usbd_set_config_index(struct usb_device *udev, uint8_t index); 318 usb_error_t usbd_set_endpoint_stall(struct usb_device *udev, 319 struct usb_endpoint *ep, uint8_t do_stall); 320 usb_error_t usb_suspend_resume(struct usb_device *udev, 321 uint8_t do_suspend); 322 void usb_devinfo(struct usb_device *udev, char *dst_ptr, uint16_t dst_len); 323 void usb_free_device(struct usb_device *, uint8_t); 324 void usb_linux_free_device(struct usb_device *dev); 325 uint8_t usb_peer_can_wakeup(struct usb_device *udev); 326 struct usb_endpoint *usb_endpoint_foreach(struct usb_device *udev, struct usb_endpoint *ep); 327 void usb_set_device_state(struct usb_device *, enum usb_dev_state); 328 enum usb_dev_state usb_get_device_state(struct usb_device *); 329 330 void usb_set_device_strings(struct usb_device *); 331 void usb_get_langid(struct usb_device *); 332 333 uint8_t usbd_enum_lock(struct usb_device *); 334 #if USB_HAVE_UGEN 335 uint8_t usbd_enum_lock_sig(struct usb_device *); 336 #endif 337 void usbd_enum_unlock(struct usb_device *); 338 void usbd_sr_lock(struct usb_device *); 339 void usbd_sr_unlock(struct usb_device *); 340 uint8_t usbd_ctrl_lock(struct usb_device *); 341 void usbd_ctrl_unlock(struct usb_device *); 342 uint8_t usbd_enum_is_locked(struct usb_device *); 343 344 #if USB_HAVE_TT_SUPPORT 345 void uhub_tt_buffer_reset_async_locked(struct usb_device *, struct usb_endpoint *); 346 #endif 347 348 uint8_t uhub_count_active_host_ports(struct usb_device *, enum usb_dev_speed); 349 350 #endif /* _USB_DEVICE_H_ */