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If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner] 6 .TH EHCI 7D "May 13, 2017" 7 .SH NAME 8 ehci \- Enhanced host controller driver 9 .SH SYNOPSIS 10 .LP 11 .nf 12 \fBusb@unit-address\fR 13 .fi 14 15 .SH DESCRIPTION 16 .LP 17 The \fBehci\fR driver is a USBA (Solaris USB Architecture) compliant nexus 18 driver that supports the Enhanced Host Controller Interface Specification 2.0, 19 an industry standard developed by Intel. 20 .sp 21 .LP 22 A USB 2.0 host controller includes one high-speed host controller and zero or 23 more USB 1.1 host controllers. The high-speed host controller implements an 24 EHCI (Enhanced Host Controller Interface) that is used for all high-speed 25 communications to high-speed-mode devices. 26 .sp 27 .LP 28 All USB 2.0 devices connected to the root ports of the USB 2.0 host 29 controller and all devices connected to a high-speed-mode hub should be routed 30 to the EHCI host controller. 31 .sp 32 .LP 33 All full- and low-speed devices connected to the root ports of the USB 2.0 host 34 controller should be routed to the companion USB 1.1 host controllers. (OHCI or 35 UHCI host controller). 36 .sp 37 .LP 38 The \fBehci\fR supports bulk, interrupt, control and iso chronous transfers 39 (on USB1.\fIx\fR devices behind a USB2.0 hub). 40 .SH FILES 41 .ne 2 42 .na 43 \fB\fB/kernel/drv/ehci\fR\fR 44 .ad 45 .RS 28n 46 32-bit ELF 86 kernel module 47 .RE 48 49 .sp 50 .ne 2 51 .na 52 \fB\fB/kernel/drv/sparcv9/ehci\fR\fR 53 .ad 54 .RS 28n 55 64-bit SPARC ELF kernel module 56 .RE 57 58 .sp 59 .ne 2 60 .na 61 \fB\fB/kernel/drv/amd64/ehci\fR\fR 62 .ad 63 .RS 28n 64 64-bit x86 ELF kernel module 65 .RE 66 67 .sp 68 .ne 2 69 .na 70 \fB\fB/kernel/drv/ehci.conf\fR\fR 71 .ad 72 .RS 28n 73 Driver configuration file 74 .RE 75 76 .SH ATTRIBUTES 77 .LP 78 See \fBattributes\fR(5) for descriptions of the following attributes: 79 .sp 80 81 .sp 82 .TS 83 box; 84 c | c 85 l | l . 86 ATTRIBUTE TYPE ATTRIBUTE VALUE 87 _ 88 Architecture SPARC, x86, PCI-based systems 89 .TE 90 91 .SH SEE ALSO 92 .LP 93 \fBadd_drv\fR(1M), \fBprtconf\fR(1M), \fBrem_drv\fR(1M), \fBupdate_drv\fR(1M), 94 \fBattributes\fR(5), \fBhubd\fR(7D), \fBuhci\fR(7D), \fBohci\fR(7D), 95 \fBusba\fR(7D) 96 .sp 97 .LP 98 \fIWriting Device Drivers\fR 99 .sp 100 .LP 101 \fIUniversal Serial Bus Specification 2.0\fR 102 .sp 103 .LP 104 \fIEnhanced Host Controller Interface Specification 1.0\fR 105 .sp 106 .LP 107 \fISystem Administration Guide: Basic Administration\fR 108 .sp 109 .LP 110 \fIhttp://www.usb.org\fR 111 .sp 112 .LP 113 \fIhttp://www.intel.com/technology/usb/ehcispec.htm\fR 114 .SH DIAGNOSTICS 115 .LP 116 In addition to being logged, the following messages may appear on the system 117 console. All messages are formatted in the following manner: 118 .sp 119 .in +2 120 .nf 121 WARNING: <device path> (ehci<instance number>): Message... 122 .fi 123 .in -2 124 .sp 125 126 .sp 127 .ne 2 128 .na 129 \fBUnrecoverable USB hardware error.\fR 130 .ad 131 .sp .6 132 .RS 4n 133 There was an unrecoverable USB hardware error reported by the \fBehci\fR 134 controller. Reboot the system. If this problem persists, contact your system 135 vendor. 136 .RE 137 138 .sp 139 .ne 2 140 .na 141 \fBNo SOF interrupts.\fR 142 .ad 143 .br 144 .na 145 \fB\fR 146 .ad 147 .sp .6 148 .RS 4n 149 No SOF interrupts have been received. This USB EHCI controller is unusable. 150 .RE 151 152 .sp 153 .ne 2 154 .na 155 \fBError recovery failure: Please hotplug the 2.0 hub at <device path>.\fR 156 .ad 157 .sp .6 158 .RS 4n 159 The driver failed to clear 2.0 hub's TT buffer. Remove and reinsert the 160 external USB2.0 hub. 161 .RE 162 163 .sp 164 .ne 2 165 .na 166 \fBRevision<xx> is not supported.\fR 167 .ad 168 .sp .6 169 .RS 4n 170 High speed USB devices prior to revision 0.95 are not supported. 171 .RE 172 173 .sp 174 .LP 175 The following messages may be entered into the system log. They are formatted 176 in the following manner: 177 .sp 178 .in +2 179 .nf 180 <device path> (ehci<instance number>): Message... 181 .fi 182 .in -2 183 .sp 184 185 .sp 186 .ne 2 187 .na 188 \fBUnable to take control from BIOS. Failure is ignored.\fR 189 .ad 190 .sp .6 191 .RS 4n 192 The driver was unable to take control of the EHCI hardware from the system's 193 BIOS. This failure is ignored. To abort the attach on this take-over failure, 194 comment out a property in ehci.conf. (x86 only). 195 .RE 196 197 .sp 198 .ne 2 199 .na 200 \fBUnable to take control from BIOS.\fR 201 .ad 202 .sp .6 203 .RS 4n 204 The driver is unable to take control of the EHCI hardware from the 205 system's BIOS and aborts the attach. High speed (USB 2.0) support is disabled. 206 In this case, all USB devices run at full/low speed. Contact your system vendor 207 or your system administror for possible changes in BIOS settings. You can 208 disable a property in \fBehci.conf\fR to ignore this failure. (x86 only.) 209 .RE 210 211 .sp 212 .ne 2 213 .na 214 \fBLow speed device is not supported.\fR 215 .ad 216 .br 217 .na 218 \fBFull speed device is not supported.\fR 219 .ad 220 .sp .6 221 .RS 4n 222 The driver detected a low or full speed device on its root hub port. Per USB 223 2.0 specification, the device should be routed to a companion host controller 224 (OHCI or UHCI). However, no attached companion host controller appears to be 225 available. Therefore, low and full speed devices are not supported. 226 .RE 227 228 .sp 229 .ne 2 230 .na 231 \fBLow speed endpoint's poll interval of <n> ms is below threshold. Rounding up 232 to 8 ms.\fR 233 .ad 234 .sp .6 235 .RS 4n 236 Low speed endpoints are limited to polling intervals between 8 ms and 255 ms. 237 If a device reports a polling interval that is less than 8 ms, the driver uses 238 8 ms instead. 239 .RE 240 241 .sp 242 .ne 2 243 .na 244 \fBLow speed endpoint's poll interval is greater than 255 ms.\fR 245 .ad 246 .sp .6 247 .RS 4n 248 The low speed device's polling interval is out of range. The host controller 249 does not allocate bandwidth for this device. This device is not usable. 250 .RE 251 252 .sp 253 .ne 2 254 .na 255 \fBFull speed endpoint's poll interval must be between 1 and 255 ms.\fR 256 .ad 257 .sp .6 258 .RS 4n 259 The full speed device's polling interval is out of range. The host controller 260 does not allocate bandwidth for this device. This device is not usable. 261 .RE 262 263 .sp 264 .ne 2 265 .na 266 \fBHigh speed endpoint's poll interval must be between 1 and 16 units.\fR 267 .ad 268 .sp .6 269 .RS 4n 270 The high speed device's polling interval is out of range. The host controller 271 will not allocate bandwidth for this device. This device will not be usable. 272 Refer to the USB specification, revision 2.0 for the unit definition. 273 .RE 274 275 .sp 276 .ne 2 277 .na 278 \fBehci_modify_qh_status_bit: Failed to halt qh=<address>.\fR 279 .ad 280 .sp .6 281 .RS 4n 282 Error recovery failed. Please disconnect and reinsert all devices or reboot. 283 .RE 284 285 .LP 286 Note - 287 .sp 288 .RS 2 289 Due to recently discovered incompatibilities with this USB controller, 290 USB2.\fIx\fR transfer support has been disabled. However, this device continues 291 to function as a USB1.\fIx\fR controller. Information on enabling USB2.x 292 support is provided in this man page. 293 .LP 294 VIA chips may not be compatible with this driver. To bind \fBehci\fR 295 specifically to the chip and eliminate the warnings, and to enable USB2.x 296 support, a new, more specific driver alias (refer to \fBadd_drv\fR(1M) and 297 \fBupdate_drv\fR(1M)) must be specified for \fBehci\fR. By default, the 298 \fBehci\fR alias is 'pciclass,0c0320.' The compatible names in the 299 \fBprtconf\fR(1M) output provides additional aliases. For example: 300 .RE 301 .sp 302 .in +2 303 .nf 304 # prtconf -vp | grep pciclass,0c0320 305 compatible: 'pci1106,3104.1106.3104.2063' + 306 \&'pci1106,3104.1106.3104' + 'pci1106,3104' + 307 pci1106,3104.2063' + 'pci1106,3104' + 'pciclass,0c0320' + 308 \&'pciclass,0c03' 309 .... 310 311 312 A more specific alias is 'pci1106,3104.' Perform the follow- 313 ing step to add this alias, then reboot the system: 314 315 316 # update_drv -a -i '"pci1106,3104"' ehci 317 318 # reboot 319 .fi 320 .in -2 321 322 .sp 323 .LP 324 After you apply the above workaround, the following message is displayed in 325 your system log: 326 .sp 327 .LP 328 Applying VIA workarounds.