usbdivar.h revision 1.109.2.28
1 /* $NetBSD: usbdivar.h,v 1.109.2.28 2017/01/03 12:50:50 skrll Exp $ */ 2 3 /* 4 * Copyright (c) 1998, 2012 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Lennart Augustsson (lennart (at) augustsson.net) at 9 * Carlstedt Research & Technology and Matthew R. Green (mrg (at) eterna.com.au). 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * Discussion about locking in the USB code: 35 * 36 * The host controller presents one lock at IPL_SOFTUSB (aka IPL_SOFTNET). 37 * 38 * List of hardware interface methods, and whether the lock is held 39 * when each is called by this module: 40 * 41 * BUS METHOD LOCK NOTES 42 * ----------------------- ------- ------------------------- 43 * ubm_open - might want to take lock? 44 * ubm_softint x 45 * ubm_dopoll - might want to take lock? 46 * ubm_allocx - 47 * ubm_freex - 48 * ubm_getlock - Called at attach time 49 * ubm_newdev - Will take lock 50 ubm_rhctrl 51 * 52 * PIPE METHOD LOCK NOTES 53 * ----------------------- ------- ------------------------- 54 * upm_transfer - 55 * upm_start - might want to take lock? 56 * upm_abort x 57 * upm_close x 58 * upm_cleartoggle - 59 * upm_done x 60 * 61 * The above semantics are likely to change. Little performance 62 * evaluation has been done on this code and the locking strategy. 63 * 64 * USB functions known to expect the lock taken include (this list is 65 * probably not exhaustive): 66 * usb_transfer_complete() 67 * usb_insert_transfer() 68 * usb_start_next() 69 * 70 */ 71 72 #include <sys/callout.h> 73 #include <sys/mutex.h> 74 #include <sys/bus.h> 75 76 /* From usb_mem.h */ 77 struct usb_dma_block; 78 typedef struct { 79 struct usb_dma_block *udma_block; 80 u_int udma_offs; 81 } usb_dma_t; 82 83 struct usbd_xfer; 84 struct usbd_pipe; 85 struct usbd_port; 86 87 struct usbd_endpoint { 88 usb_endpoint_descriptor_t *ue_edesc; 89 int ue_refcnt; 90 int ue_toggle; 91 }; 92 93 struct usbd_bus_methods { 94 usbd_status (*ubm_open)(struct usbd_pipe *); 95 void (*ubm_softint)(void *); 96 void (*ubm_dopoll)(struct usbd_bus *); 97 struct usbd_xfer *(*ubm_allocx)(struct usbd_bus *, unsigned int); 98 void (*ubm_freex)(struct usbd_bus *, struct usbd_xfer *); 99 void (*ubm_getlock)(struct usbd_bus *, kmutex_t **); 100 usbd_status (*ubm_newdev)(device_t, struct usbd_bus *, int, 101 int, int, struct usbd_port *); 102 103 int (*ubm_rhctrl)(struct usbd_bus *, 104 usb_device_request_t *, void *, int); 105 }; 106 107 struct usbd_pipe_methods { 108 int (*upm_init)(struct usbd_xfer *); 109 void (*upm_fini)(struct usbd_xfer *); 110 usbd_status (*upm_transfer)(struct usbd_xfer *); 111 usbd_status (*upm_start)(struct usbd_xfer *); 112 void (*upm_abort)(struct usbd_xfer *); 113 void (*upm_close)(struct usbd_pipe *); 114 void (*upm_cleartoggle)(struct usbd_pipe *); 115 void (*upm_done)(struct usbd_xfer *); 116 }; 117 118 struct usbd_tt { 119 struct usbd_hub *utt_hub; 120 }; 121 122 struct usbd_port { 123 usb_port_status_t up_status; 124 uint16_t up_power; /* mA of current on port */ 125 uint8_t up_portno; 126 uint8_t up_restartcnt; 127 #define USBD_RESTART_MAX 5 128 uint8_t up_reattach; 129 struct usbd_device *up_dev; /* Connected device */ 130 struct usbd_device *up_parent; /* The ports hub */ 131 struct usbd_tt *up_tt; /* Transaction translator (if any) */ 132 }; 133 134 struct usbd_hub { 135 usbd_status (*uh_explore)(struct usbd_device *hub); 136 void *uh_hubsoftc; 137 usb_hub_descriptor_t uh_hubdesc; 138 struct usbd_port uh_ports[1]; 139 }; 140 141 /*****/ 142 /* 0, root, and 1->127 */ 143 #define USB_ROOTHUB_INDEX 1 144 #define USB_TOTAL_DEVICES (USB_MAX_DEVICES + 1) 145 146 struct usbd_bus { 147 /* Filled by HC driver */ 148 void *ub_hcpriv; 149 int ub_revision; /* USB revision */ 150 #define USBREV_UNKNOWN 0 151 #define USBREV_PRE_1_0 1 152 #define USBREV_1_0 2 153 #define USBREV_1_1 3 154 #define USBREV_2_0 4 155 #define USBREV_3_0 5 156 #define USBREV_STR { "unknown", "pre 1.0", "1.0", "1.1", "2.0", "3.0" } 157 158 const struct usbd_bus_methods 159 *ub_methods; 160 uint32_t ub_pipesize; /* size of a pipe struct */ 161 bool ub_usedma; /* Does this HC support DMA */ 162 int ub_dmaflags; 163 bus_dma_tag_t ub_dmatag; /* DMA tag */ 164 165 /* Filled by usb driver */ 166 kmutex_t *ub_lock; 167 struct usbd_device *ub_roothub; 168 uint8_t ub_rhaddr; /* roothub address */ 169 uint8_t ub_rhconf; /* roothub configuration */ 170 struct usbd_device *ub_devices[USB_TOTAL_DEVICES]; 171 kcondvar_t ub_needsexplore_cv; 172 char ub_needsexplore;/* a hub a signalled a change */ 173 char ub_usepolling; 174 device_t ub_usbctl; 175 struct usb_device_stats ub_stats; 176 177 void *ub_soft; /* soft interrupt cookie */ 178 }; 179 180 struct usbd_device { 181 struct usbd_bus *ud_bus; /* our controller */ 182 struct usbd_pipe *ud_pipe0; /* pipe 0 */ 183 uint8_t ud_addr; /* device addess */ 184 uint8_t ud_config; /* current configuration # */ 185 uint8_t ud_depth; /* distance from root hub */ 186 uint8_t ud_speed; /* low/full/high speed */ 187 uint8_t ud_selfpowered; /* flag for self powered */ 188 uint16_t ud_power; /* mA the device uses */ 189 int16_t ud_langid; /* language for strings */ 190 #define USBD_NOLANG (-1) 191 usb_event_cookie_t ud_cookie; /* unique connection id */ 192 struct usbd_port *ud_powersrc; /* upstream hub port, or 0 */ 193 struct usbd_device *ud_myhub; /* upstream hub */ 194 struct usbd_port *ud_myhsport; /* closest high speed port */ 195 struct usbd_endpoint ud_ep0; /* for pipe 0 */ 196 usb_endpoint_descriptor_t 197 ud_ep0desc; /* for pipe 0 */ 198 struct usbd_interface *ud_ifaces; /* array of all interfaces */ 199 usb_device_descriptor_t ud_ddesc; /* device descriptor */ 200 usb_config_descriptor_t *ud_cdesc; /* full config descr */ 201 usb_bos_descriptor_t *ud_bdesc; /* full BOS descr */ 202 const struct usbd_quirks 203 *ud_quirks; /* device quirks, always set */ 204 struct usbd_hub *ud_hub; /* only if this is a hub */ 205 int ud_subdevlen; /* array length of following */ 206 device_t *ud_subdevs; /* sub-devices */ 207 int ud_nifaces_claimed; /* number of ifaces in use */ 208 void *ud_hcpriv; 209 210 char *ud_serial; /* serial number, can be NULL */ 211 char *ud_vendor; /* vendor string, can be NULL */ 212 char *ud_product; /* product string can be NULL */ 213 }; 214 215 struct usbd_interface { 216 struct usbd_device *ui_dev; 217 usb_interface_descriptor_t 218 *ui_idesc; 219 int ui_index; 220 int ui_altindex; 221 struct usbd_endpoint *ui_endpoints; 222 void *ui_priv; 223 LIST_HEAD(, usbd_pipe) ui_pipes; 224 }; 225 226 struct usbd_pipe { 227 struct usbd_interface *up_iface; 228 struct usbd_device *up_dev; 229 struct usbd_endpoint *up_endpoint; 230 char up_running; 231 char up_aborting; 232 bool up_serialise; 233 SIMPLEQ_HEAD(, usbd_xfer) 234 up_queue; 235 LIST_ENTRY(usbd_pipe) up_next; 236 struct usb_task up_async_task; 237 238 struct usbd_xfer *up_intrxfer; /* used for repeating requests */ 239 char up_repeat; 240 int up_interval; 241 uint8_t up_flags; 242 243 /* Filled by HC driver. */ 244 const struct usbd_pipe_methods 245 *up_methods; 246 }; 247 248 struct usbd_xfer { 249 struct usbd_pipe *ux_pipe; 250 void *ux_priv; 251 void *ux_buffer; 252 kcondvar_t ux_cv; 253 uint32_t ux_length; 254 uint32_t ux_actlen; 255 uint16_t ux_flags; 256 uint32_t ux_timeout; 257 usbd_status ux_status; 258 usbd_callback ux_callback; 259 volatile uint8_t ux_done; 260 uint8_t ux_state; /* used for DIAGNOSTIC */ 261 #define XFER_FREE 0x46 262 #define XFER_BUSY 0x55 263 #define XFER_ONQU 0x9e 264 265 /* For control pipe */ 266 usb_device_request_t ux_request; 267 268 /* For isoc */ 269 uint16_t *ux_frlengths; 270 int ux_nframes; 271 272 const struct usbd_pipe_methods *ux_methods; 273 274 /* For memory allocation and softc */ 275 struct usbd_bus *ux_bus; 276 usb_dma_t ux_dmabuf; 277 void *ux_buf; 278 uint32_t ux_bufsize; 279 280 uint8_t ux_rqflags; 281 #define URQ_REQUEST 0x01 282 283 SIMPLEQ_ENTRY(usbd_xfer) 284 ux_next; 285 286 void *ux_hcpriv; /* private use by the HC driver */ 287 uint8_t ux_hcflags; /* private use by the HC driver */ 288 #define UXFER_ABORTING 0x01 /* xfer is aborting. */ 289 #define UXFER_ABORTWAIT 0x02 /* abort completion is being awaited. */ 290 kcondvar_t ux_hccv; /* private use by the HC driver */ 291 292 struct usb_task ux_aborttask; 293 struct callout ux_callout; 294 }; 295 296 void usbd_init(void); 297 void usbd_finish(void); 298 299 #if defined(USB_DEBUG) 300 void usbd_dump_iface(struct usbd_interface *); 301 void usbd_dump_device(struct usbd_device *); 302 void usbd_dump_endpoint(struct usbd_endpoint *); 303 void usbd_dump_queue(struct usbd_pipe *); 304 void usbd_dump_pipe(struct usbd_pipe *); 305 #endif 306 307 /* Routines from usb_subr.c */ 308 int usbctlprint(void *, const char *); 309 void usbd_get_device_strings(struct usbd_device *); 310 void usb_delay_ms_locked(struct usbd_bus *, u_int, kmutex_t *); 311 void usb_delay_ms(struct usbd_bus *, u_int); 312 void usbd_delay_ms_locked(struct usbd_device *, u_int, kmutex_t *); 313 void usbd_delay_ms(struct usbd_device *, u_int); 314 usbd_status usbd_reset_port(struct usbd_device *, int, usb_port_status_t *); 315 usbd_status usbd_setup_pipe(struct usbd_device *, 316 struct usbd_interface *, 317 struct usbd_endpoint *, int, 318 struct usbd_pipe **); 319 usbd_status usbd_setup_pipe_flags(struct usbd_device *, 320 struct usbd_interface *, 321 struct usbd_endpoint *, int, 322 struct usbd_pipe **, 323 uint8_t); 324 usbd_status usbd_new_device(device_t, struct usbd_bus *, int, int, int, 325 struct usbd_port *); 326 usbd_status usbd_reattach_device(device_t, struct usbd_device *, 327 int, const int *); 328 329 void usbd_remove_device(struct usbd_device *, struct usbd_port *); 330 int usbd_printBCD(char *, size_t, int); 331 usbd_status usbd_fill_iface_data(struct usbd_device *, int, int); 332 void usb_free_device(struct usbd_device *); 333 334 usbd_status usb_insert_transfer(struct usbd_xfer *); 335 void usb_transfer_complete(struct usbd_xfer *); 336 int usb_disconnect_port(struct usbd_port *, device_t, int); 337 338 void usbd_kill_pipe(struct usbd_pipe *); 339 usbd_status usbd_attach_roothub(device_t, struct usbd_device *); 340 usbd_status usbd_probe_and_attach(device_t, struct usbd_device *, int, int); 341 usbd_status usbd_get_initial_ddesc(struct usbd_device *, 342 usb_device_descriptor_t *); 343 344 /* Routines from usb.c */ 345 void usb_needs_explore(struct usbd_device *); 346 void usb_needs_reattach(struct usbd_device *); 347 void usb_schedsoftintr(struct usbd_bus *); 348 349 static inline int 350 usbd_xfer_isread(struct usbd_xfer *xfer) 351 { 352 if (xfer->ux_rqflags & URQ_REQUEST) 353 return xfer->ux_request.bmRequestType & UT_READ; 354 355 return xfer->ux_pipe->up_endpoint->ue_edesc->bEndpointAddress & 356 UE_DIR_IN; 357 } 358 359 static inline size_t 360 usb_addr2dindex(int addr) 361 { 362 363 return USB_ROOTHUB_INDEX + addr; 364 } 365 366 /* 367 * These macros reflect the current locking scheme. They might change. 368 */ 369 370 #define usbd_lock_pipe(p) mutex_enter((p)->up_dev->ud_bus->ub_lock) 371 #define usbd_unlock_pipe(p) mutex_exit((p)->up_dev->ud_bus->ub_lock) 372
Indexes created Wed Oct 01 18:09:54 GMT 2025