ehci_pci.c revision 184610
1274955Ssvnmir/*- 2274955Ssvnmir * Copyright (c) 1998 The NetBSD Foundation, Inc. 3274955Ssvnmir * All rights reserved. 4274955Ssvnmir * 5274955Ssvnmir * This code is derived from software contributed to The NetBSD Foundation 6274955Ssvnmir * by Lennart Augustsson (augustss@carlstedt.se) at 7274955Ssvnmir * Carlstedt Research & Technology. 8274955Ssvnmir * 9274955Ssvnmir * Redistribution and use in source and binary forms, with or without 10274955Ssvnmir * modification, are permitted provided that the following conditions 11274955Ssvnmir * are met: 12280031Sdim * 1. Redistributions of source code must retain the above copyright 13288943Sdim * notice, this list of conditions and the following disclaimer. 14280031Sdim * 2. Redistributions in binary form must reproduce the above copyright 15274955Ssvnmir * notice, this list of conditions and the following disclaimer in the 16274955Ssvnmir * documentation and/or other materials provided with the distribution. 17274955Ssvnmir * 3. All advertising materials mentioning features or use of this software 18274955Ssvnmir * must display the following acknowledgement: 19274955Ssvnmir * This product includes software developed by the NetBSD 20274955Ssvnmir * Foundation, Inc. and its contributors. 21274955Ssvnmir * 4. Neither the name of The NetBSD Foundation nor the names of its 22274955Ssvnmir * contributors may be used to endorse or promote products derived 23274955Ssvnmir * from this software without specific prior written permission. 24274955Ssvnmir * 25274955Ssvnmir * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 26274955Ssvnmir * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27274955Ssvnmir * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28274955Ssvnmir * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 29274955Ssvnmir * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30274955Ssvnmir * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31274955Ssvnmir * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32274955Ssvnmir * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33274955Ssvnmir * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34288943Sdim * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35274955Ssvnmir * POSSIBILITY OF SUCH DAMAGE. 36288943Sdim */ 37274955Ssvnmir 38274955Ssvnmir#include <sys/cdefs.h> 39274955Ssvnmir__FBSDID("$FreeBSD: head/sys/dev/usb2/controller/ehci2_pci.c 184610 2008-11-04 02:31:03Z alfred $"); 40274955Ssvnmir 41274955Ssvnmir/* 42274955Ssvnmir * USB Enhanced Host Controller Driver, a.k.a. USB 2.0 controller. 43274955Ssvnmir * 44274955Ssvnmir * The EHCI 1.0 spec can be found at 45274955Ssvnmir * http://developer.intel.com/technology/usb/download/ehci-r10.pdf 46274955Ssvnmir * and the USB 2.0 spec at 47274955Ssvnmir * http://www.usb.org/developers/docs/usb_20.zip 48274955Ssvnmir */ 49274955Ssvnmir 50274955Ssvnmir/* The low level controller code for EHCI has been split into 51274955Ssvnmir * PCI probes and EHCI specific code. This was done to facilitate the 52274955Ssvnmir * sharing of code between *BSD's 53274955Ssvnmir */ 54274955Ssvnmir 55274955Ssvnmir#include <dev/usb2/include/usb2_mfunc.h> 56274955Ssvnmir#include <dev/usb2/include/usb2_defs.h> 57274955Ssvnmir#include <dev/usb2/include/usb2_standard.h> 58274955Ssvnmir 59274955Ssvnmir#include <dev/usb2/core/usb2_core.h> 60274955Ssvnmir#include <dev/usb2/core/usb2_busdma.h> 61274955Ssvnmir#include <dev/usb2/core/usb2_process.h> 62274955Ssvnmir#include <dev/usb2/core/usb2_config_td.h> 63274955Ssvnmir#include <dev/usb2/core/usb2_sw_transfer.h> 64274955Ssvnmir#include <dev/usb2/core/usb2_util.h> 65274955Ssvnmir 66274955Ssvnmir#include <dev/usb2/controller/usb2_controller.h> 67274955Ssvnmir#include <dev/usb2/controller/usb2_bus.h> 68274955Ssvnmir#include <dev/usb2/controller/usb2_pci.h> 69274955Ssvnmir#include <dev/usb2/controller/ehci2.h> 70274955Ssvnmir 71274955Ssvnmir#define PCI_EHCI_VENDORID_ACERLABS 0x10b9 72274955Ssvnmir#define PCI_EHCI_VENDORID_AMD 0x1022 73274955Ssvnmir#define PCI_EHCI_VENDORID_APPLE 0x106b 74274955Ssvnmir#define PCI_EHCI_VENDORID_ATI 0x1002 75274955Ssvnmir#define PCI_EHCI_VENDORID_CMDTECH 0x1095 76274955Ssvnmir#define PCI_EHCI_VENDORID_INTEL 0x8086 77274955Ssvnmir#define PCI_EHCI_VENDORID_NEC 0x1033 78274955Ssvnmir#define PCI_EHCI_VENDORID_OPTI 0x1045 79274955Ssvnmir#define PCI_EHCI_VENDORID_PHILIPS 0x1131 80274955Ssvnmir#define PCI_EHCI_VENDORID_SIS 0x1039 81274955Ssvnmir#define PCI_EHCI_VENDORID_NVIDIA 0x12D2 82274955Ssvnmir#define PCI_EHCI_VENDORID_NVIDIA2 0x10DE 83274955Ssvnmir#define PCI_EHCI_VENDORID_VIA 0x1106 84274955Ssvnmir 85274955Ssvnmir#define PCI_EHCI_BASE_REG 0x10 86274955Ssvnmir 87274955Ssvnmirstatic void ehci_pci_takecontroller(device_t self); 88274955Ssvnmir 89274955Ssvnmirstatic device_probe_t ehci_pci_probe; 90274955Ssvnmirstatic device_attach_t ehci_pci_attach; 91274955Ssvnmirstatic device_detach_t ehci_pci_detach; 92274955Ssvnmirstatic device_suspend_t ehci_pci_suspend; 93296417Sdimstatic device_resume_t ehci_pci_resume; 94296417Sdimstatic device_shutdown_t ehci_pci_shutdown; 95296417Sdim 96296417Sdimstatic int 97296417Sdimehci_pci_suspend(device_t self) 98274955Ssvnmir{ 99274955Ssvnmir ehci_softc_t *sc = device_get_softc(self); 100274955Ssvnmir int err; 101274955Ssvnmir 102274955Ssvnmir err = bus_generic_suspend(self); 103274955Ssvnmir if (err) 104274955Ssvnmir return (err); 105274955Ssvnmir ehci_suspend(sc); 106274955Ssvnmir return (0); 107274955Ssvnmir} 108274955Ssvnmir 109274955Ssvnmirstatic int 110274955Ssvnmirehci_pci_resume(device_t self) 111274955Ssvnmir{ 112274955Ssvnmir ehci_softc_t *sc = device_get_softc(self); 113274955Ssvnmir 114274955Ssvnmir ehci_pci_takecontroller(self); 115274955Ssvnmir ehci_resume(sc); 116274955Ssvnmir 117288943Sdim bus_generic_resume(self); 118288943Sdim 119288943Sdim return (0); 120288943Sdim} 121288943Sdim 122288943Sdimstatic int 123288943Sdimehci_pci_shutdown(device_t self) 124288943Sdim{ 125288943Sdim ehci_softc_t *sc = device_get_softc(self); 126288943Sdim int err; 127288943Sdim 128288943Sdim err = bus_generic_shutdown(self); 129288943Sdim if (err) 130288943Sdim return (err); 131288943Sdim ehci_shutdown(sc); 132288943Sdim 133288943Sdim return (0); 134288943Sdim} 135288943Sdim 136288943Sdimstatic const char * 137288943Sdimehci_pci_match(device_t self) 138288943Sdim{ 139288943Sdim uint32_t device_id = pci_get_devid(self); 140288943Sdim 141288943Sdim switch (device_id) { 142288943Sdim case 0x268c8086: 143288943Sdim return ("Intel 63XXESB USB 2.0 controller"); 144288943Sdim 145288943Sdim case 0x523910b9: 146274955Ssvnmir return "ALi M5239 USB 2.0 controller"; 147274955Ssvnmir 148274955Ssvnmir case 0x10227463: 149274955Ssvnmir return "AMD 8111 USB 2.0 controller"; 150274955Ssvnmir 151274955Ssvnmir case 0x20951022: 152274955Ssvnmir return ("AMD CS5536 (Geode) USB 2.0 controller"); 153274955Ssvnmir 154274955Ssvnmir case 0x43451002: 155274955Ssvnmir return "ATI SB200 USB 2.0 controller"; 156274955Ssvnmir case 0x43731002: 157288943Sdim return "ATI SB400 USB 2.0 controller"; 158274955Ssvnmir 159274955Ssvnmir case 0x25ad8086: 160274955Ssvnmir return "Intel 6300ESB USB 2.0 controller"; 161274955Ssvnmir case 0x24cd8086: 162274955Ssvnmir return "Intel 82801DB/L/M (ICH4) USB 2.0 controller"; 163274955Ssvnmir case 0x24dd8086: 164274955Ssvnmir return "Intel 82801EB/R (ICH5) USB 2.0 controller"; 165274955Ssvnmir case 0x265c8086: 166274955Ssvnmir return "Intel 82801FB (ICH6) USB 2.0 controller"; 167274955Ssvnmir case 0x27cc8086: 168274955Ssvnmir return "Intel 82801GB/R (ICH7) USB 2.0 controller"; 169274955Ssvnmir 170274955Ssvnmir case 0x28368086: 171274955Ssvnmir return "Intel 82801H (ICH8) USB 2.0 controller USB2-A"; 172274955Ssvnmir case 0x283a8086: 173274955Ssvnmir return "Intel 82801H (ICH8) USB 2.0 controller USB2-B"; 174274955Ssvnmir case 0x293a8086: 175296417Sdim return "Intel 82801I (ICH9) USB 2.0 controller"; 176296417Sdim case 0x293c8086: 177296417Sdim return "Intel 82801I (ICH9) USB 2.0 controller"; 178296417Sdim 179296417Sdim case 0x00e01033: 180274955Ssvnmir return ("NEC uPD 720100 USB 2.0 controller"); 181274955Ssvnmir 182274955Ssvnmir case 0x006810de: 183274955Ssvnmir return "NVIDIA nForce2 USB 2.0 controller"; 184274955Ssvnmir case 0x008810de: 185274955Ssvnmir return "NVIDIA nForce2 Ultra 400 USB 2.0 controller"; 186296417Sdim case 0x00d810de: 187296417Sdim return "NVIDIA nForce3 USB 2.0 controller"; 188274955Ssvnmir case 0x00e810de: 189274955Ssvnmir return "NVIDIA nForce3 250 USB 2.0 controller"; 190274955Ssvnmir case 0x005b10de: 191274955Ssvnmir return "NVIDIA nForce4 USB 2.0 controller"; 192296417Sdim 193296417Sdim case 0x15621131: 194274955Ssvnmir return "Philips ISP156x USB 2.0 controller"; 195274955Ssvnmir 196274955Ssvnmir case 0x31041106: 197274955Ssvnmir return ("VIA VT6202 USB 2.0 controller"); 198274955Ssvnmir 199274955Ssvnmir default: 200274955Ssvnmir break; 201274955Ssvnmir } 202274955Ssvnmir 203274955Ssvnmir if ((pci_get_class(self) == PCIC_SERIALBUS) 204274955Ssvnmir && (pci_get_subclass(self) == PCIS_SERIALBUS_USB) 205296417Sdim && (pci_get_progif(self) == PCI_INTERFACE_EHCI)) { 206296417Sdim return ("EHCI (generic) USB 2.0 controller"); 207296417Sdim } 208274955Ssvnmir return (NULL); /* dunno */ 209274955Ssvnmir} 210274955Ssvnmir 211274955Ssvnmirstatic int 212274955Ssvnmirehci_pci_probe(device_t self) 213274955Ssvnmir{ 214288943Sdim const char *desc = ehci_pci_match(self); 215274955Ssvnmir 216274955Ssvnmir if (desc) { 217288943Sdim device_set_desc(self, desc); 218274955Ssvnmir return (0); 219274955Ssvnmir } else { 220274955Ssvnmir return (ENXIO); 221274955Ssvnmir } 222274955Ssvnmir} 223274955Ssvnmir 224288943Sdimstatic int 225274955Ssvnmirehci_pci_attach(device_t self) 226274955Ssvnmir{ 227274955Ssvnmir ehci_softc_t *sc = device_get_softc(self); 228274955Ssvnmir int err; 229274955Ssvnmir int rid; 230274955Ssvnmir 231288943Sdim if (sc == NULL) { 232288943Sdim device_printf(self, "Could not allocate sc\n"); 233274955Ssvnmir return (ENXIO); 234274955Ssvnmir } 235296417Sdim /* get all DMA memory */ 236274955Ssvnmir 237296417Sdim if (usb2_bus_mem_alloc_all(&sc->sc_bus, 238296417Sdim USB_GET_DMA_TAG(self), &ehci_iterate_hw_softc)) { 239296417Sdim return ENOMEM; 240296417Sdim } 241274955Ssvnmir sc->sc_dev = self; 242274955Ssvnmir 243296417Sdim pci_enable_busmaster(self); 244296417Sdim 245296417Sdim switch (pci_read_config(self, PCI_USBREV, 1) & PCI_USB_REV_MASK) { 246296417Sdim case PCI_USB_REV_PRE_1_0: 247296417Sdim case PCI_USB_REV_1_0: 248296417Sdim case PCI_USB_REV_1_1: 249274955Ssvnmir /* 250274955Ssvnmir * NOTE: some EHCI USB controllers have the wrong USB 251274955Ssvnmir * revision number. It appears those controllers are 252274955Ssvnmir * fully compliant so we just ignore this value in 253274955Ssvnmir * some common cases. 254274955Ssvnmir */ 255274955Ssvnmir device_printf(self, "pre-2.0 USB revision (ignored)\n"); 256296417Sdim /* fallthrough */ 257296417Sdim case PCI_USB_REV_2_0: 258274955Ssvnmir sc->sc_bus.usbrev = USB_REV_2_0; 259274955Ssvnmir break; 260274955Ssvnmir default: 261296417Sdim sc->sc_bus.usbrev = USB_REV_UNKNOWN; 262296417Sdim break; 263296417Sdim } 264296417Sdim 265274955Ssvnmir rid = PCI_CBMEM; 266274955Ssvnmir sc->sc_io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &rid, 267274955Ssvnmir RF_ACTIVE); 268296417Sdim if (!sc->sc_io_res) { 269296417Sdim device_printf(self, "Could not map memory\n"); 270274955Ssvnmir goto error; 271296417Sdim } 272296417Sdim sc->sc_io_tag = rman_get_bustag(sc->sc_io_res); 273296417Sdim sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res); 274296417Sdim sc->sc_io_size = rman_get_size(sc->sc_io_res); 275296417Sdim 276274955Ssvnmir rid = 0; 277288943Sdim sc->sc_irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid, 278288943Sdim RF_SHAREABLE | RF_ACTIVE); 279288943Sdim if (sc->sc_irq_res == NULL) { 280288943Sdim device_printf(self, "Could not allocate irq\n"); 281288943Sdim goto error; 282288943Sdim } 283274955Ssvnmir sc->sc_bus.bdev = device_add_child(self, "usbus", -1); 284274955Ssvnmir if (!sc->sc_bus.bdev) { 285274955Ssvnmir device_printf(self, "Could not add USB device\n"); 286274955Ssvnmir goto error; 287274955Ssvnmir } 288288943Sdim device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus); 289288943Sdim 290274955Ssvnmir /* 291288943Sdim * ehci_pci_match will never return NULL if ehci_pci_probe 292274955Ssvnmir * succeeded 293274955Ssvnmir */ 294274955Ssvnmir device_set_desc(sc->sc_bus.bdev, ehci_pci_match(self)); 295288943Sdim switch (pci_get_vendor(self)) { 296288943Sdim case PCI_EHCI_VENDORID_ACERLABS: 297274955Ssvnmir sprintf(sc->sc_vendor, "AcerLabs"); 298288943Sdim break; 299288943Sdim case PCI_EHCI_VENDORID_AMD: 300288943Sdim sprintf(sc->sc_vendor, "AMD"); 301288943Sdim break; 302288943Sdim case PCI_EHCI_VENDORID_APPLE: 303288943Sdim sprintf(sc->sc_vendor, "Apple"); 304288943Sdim break; 305288943Sdim case PCI_EHCI_VENDORID_ATI: 306288943Sdim sprintf(sc->sc_vendor, "ATI"); 307288943Sdim break; 308274955Ssvnmir case PCI_EHCI_VENDORID_CMDTECH: 309274955Ssvnmir sprintf(sc->sc_vendor, "CMDTECH"); 310274955Ssvnmir break; 311274955Ssvnmir case PCI_EHCI_VENDORID_INTEL: 312274955Ssvnmir sprintf(sc->sc_vendor, "Intel"); 313274955Ssvnmir break; 314274955Ssvnmir case PCI_EHCI_VENDORID_NEC: 315288943Sdim sprintf(sc->sc_vendor, "NEC"); 316274955Ssvnmir break; 317274955Ssvnmir case PCI_EHCI_VENDORID_OPTI: 318274955Ssvnmir sprintf(sc->sc_vendor, "OPTi"); 319274955Ssvnmir break; 320274955Ssvnmir case PCI_EHCI_VENDORID_PHILIPS: 321274955Ssvnmir sprintf(sc->sc_vendor, "Philips"); 322274955Ssvnmir break; 323274955Ssvnmir case PCI_EHCI_VENDORID_SIS: 324288943Sdim sprintf(sc->sc_vendor, "SiS"); 325296417Sdim break; 326296417Sdim case PCI_EHCI_VENDORID_NVIDIA: 327296417Sdim case PCI_EHCI_VENDORID_NVIDIA2: 328296417Sdim sprintf(sc->sc_vendor, "nVidia"); 329296417Sdim break; 330296417Sdim case PCI_EHCI_VENDORID_VIA: 331288943Sdim sprintf(sc->sc_vendor, "VIA"); 332274955Ssvnmir break; 333274955Ssvnmir default: 334274955Ssvnmir if (bootverbose) 335274955Ssvnmir device_printf(self, "(New EHCI DeviceId=0x%08x)\n", 336274955Ssvnmir pci_get_devid(self)); 337274955Ssvnmir sprintf(sc->sc_vendor, "(0x%04x)", pci_get_vendor(self)); 338274955Ssvnmir } 339274955Ssvnmir 340274955Ssvnmir err = usb2_config_td_setup(&sc->sc_config_td, sc, &sc->sc_bus.mtx, 341274955Ssvnmir NULL, 0, 4); 342274955Ssvnmir if (err) { 343274955Ssvnmir device_printf(self, "could not setup config thread!\n"); 344274955Ssvnmir goto error; 345274955Ssvnmir } 346274955Ssvnmir#if (__FreeBSD_version >= 700031) 347274955Ssvnmir err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE, 348288943Sdim NULL, (void *)(void *)ehci_interrupt, sc, &sc->sc_intr_hdl); 349274955Ssvnmir#else 350274955Ssvnmir err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE, 351288943Sdim (void *)(void *)ehci_interrupt, sc, &sc->sc_intr_hdl); 352288943Sdim#endif 353288943Sdim if (err) { 354274955Ssvnmir device_printf(self, "Could not setup irq, %d\n", err); 355296417Sdim sc->sc_intr_hdl = NULL; 356296417Sdim goto error; 357274955Ssvnmir } 358274955Ssvnmir ehci_pci_takecontroller(self); 359274955Ssvnmir err = ehci_init(sc); 360296417Sdim if (!err) { 361296417Sdim err = device_probe_and_attach(sc->sc_bus.bdev); 362274955Ssvnmir } 363274955Ssvnmir if (err) { 364288943Sdim device_printf(self, "USB init failed err=%d\n", err); 365288943Sdim goto error; 366288943Sdim } 367274955Ssvnmir return (0); 368274955Ssvnmir 369274955Ssvnmirerror: 370274955Ssvnmir ehci_pci_detach(self); 371274955Ssvnmir return (ENXIO); 372274955Ssvnmir} 373288943Sdim 374274955Ssvnmirstatic int 375288943Sdimehci_pci_detach(device_t self) 376274955Ssvnmir{ 377274955Ssvnmir ehci_softc_t *sc = device_get_softc(self); 378274955Ssvnmir device_t bdev; 379274955Ssvnmir 380274955Ssvnmir usb2_config_td_drain(&sc->sc_config_td); 381296417Sdim 382274955Ssvnmir if (sc->sc_bus.bdev) { 383274955Ssvnmir bdev = sc->sc_bus.bdev; 384296417Sdim device_detach(bdev); 385274955Ssvnmir device_delete_child(self, bdev); 386274955Ssvnmir } 387274955Ssvnmir /* during module unload there are lots of children leftover */ 388274955Ssvnmir device_delete_all_children(self); 389274955Ssvnmir 390274955Ssvnmir pci_disable_busmaster(self); 391274955Ssvnmir 392274955Ssvnmir /* 393274955Ssvnmir * disable interrupts that might have been switched on in ehci_init 394274955Ssvnmir */ 395274955Ssvnmir if (sc->sc_io_res) { 396274955Ssvnmir EWRITE4(sc, EHCI_USBINTR, 0); 397274955Ssvnmir } 398274955Ssvnmir if (sc->sc_irq_res && sc->sc_intr_hdl) { 399288943Sdim /* 400288943Sdim * only call ehci_detach() after ehci_init() 401288943Sdim */ 402274955Ssvnmir ehci_detach(sc); 403274955Ssvnmir 404274955Ssvnmir int err = bus_teardown_intr(self, sc->sc_irq_res, sc->sc_intr_hdl); 405274955Ssvnmir 406288943Sdim if (err) 407274955Ssvnmir /* XXX or should we panic? */ 408274955Ssvnmir device_printf(self, "Could not tear down irq, %d\n", 409274955Ssvnmir err); 410274955Ssvnmir sc->sc_intr_hdl = NULL; 411274955Ssvnmir } 412274955Ssvnmir if (sc->sc_irq_res) { 413274955Ssvnmir bus_release_resource(self, SYS_RES_IRQ, 0, sc->sc_irq_res); 414274955Ssvnmir sc->sc_irq_res = NULL; 415274955Ssvnmir } 416274955Ssvnmir if (sc->sc_io_res) { 417274955Ssvnmir bus_release_resource(self, SYS_RES_MEMORY, PCI_CBMEM, 418274955Ssvnmir sc->sc_io_res); 419274955Ssvnmir sc->sc_io_res = NULL; 420288943Sdim } 421288943Sdim usb2_config_td_unsetup(&sc->sc_config_td); 422288943Sdim 423274955Ssvnmir usb2_bus_mem_free_all(&sc->sc_bus, &ehci_iterate_hw_softc); 424274955Ssvnmir 425288943Sdim return (0); 426288943Sdim} 427288943Sdim 428274955Ssvnmirstatic void 429274955Ssvnmirehci_pci_takecontroller(device_t self) 430274955Ssvnmir{ 431274955Ssvnmir ehci_softc_t *sc = device_get_softc(self); 432 uint32_t cparams; 433 uint32_t eec; 434 uint16_t to; 435 uint8_t eecp; 436 uint8_t bios_sem; 437 438 cparams = EREAD4(sc, EHCI_HCCPARAMS); 439 440 /* Synchronise with the BIOS if it owns the controller. */ 441 for (eecp = EHCI_HCC_EECP(cparams); eecp != 0; 442 eecp = EHCI_EECP_NEXT(eec)) { 443 eec = pci_read_config(self, eecp, 4); 444 if (EHCI_EECP_ID(eec) != EHCI_EC_LEGSUP) { 445 continue; 446 } 447 bios_sem = pci_read_config(self, eecp + 448 EHCI_LEGSUP_BIOS_SEM, 1); 449 if (bios_sem == 0) { 450 continue; 451 } 452 device_printf(sc->sc_bus.bdev, "waiting for BIOS " 453 "to give up control\n"); 454 pci_write_config(self, eecp + 455 EHCI_LEGSUP_OS_SEM, 1, 1); 456 to = 500; 457 while (1) { 458 bios_sem = pci_read_config(self, eecp + 459 EHCI_LEGSUP_BIOS_SEM, 1); 460 if (bios_sem == 0) 461 break; 462 463 if (--to == 0) { 464 device_printf(sc->sc_bus.bdev, 465 "timed out waiting for BIOS\n"); 466 break; 467 } 468 usb2_pause_mtx(NULL, 10); /* wait 10ms */ 469 } 470 } 471 return; 472} 473 474static driver_t ehci_driver = 475{ 476 .name = "ehci", 477 .methods = (device_method_t[]){ 478 /* device interface */ 479 DEVMETHOD(device_probe, ehci_pci_probe), 480 DEVMETHOD(device_attach, ehci_pci_attach), 481 DEVMETHOD(device_detach, ehci_pci_detach), 482 DEVMETHOD(device_suspend, ehci_pci_suspend), 483 DEVMETHOD(device_resume, ehci_pci_resume), 484 DEVMETHOD(device_shutdown, ehci_pci_shutdown), 485 /* bus interface */ 486 DEVMETHOD(bus_print_child, bus_generic_print_child), 487 488 {0, 0} 489 }, 490 .size = sizeof(struct ehci_softc), 491}; 492 493static devclass_t ehci_devclass; 494 495DRIVER_MODULE(ehci, pci, ehci_driver, ehci_devclass, 0, 0); 496DRIVER_MODULE(ehci, cardbus, ehci_driver, ehci_devclass, 0, 0); 497MODULE_DEPEND(ehci, usb2_controller, 1, 1, 1); 498MODULE_DEPEND(ehci, usb2_core, 1, 1, 1); 499