pxa2x0_ohci.c revision 1.8
1 /* $NetBSD: pxa2x0_ohci.c,v 1.8 2011/07/01 20:32:51 dyoung Exp $ */ 2 /* $OpenBSD: pxa2x0_ohci.c,v 1.19 2005/04/08 02:32:54 dlg Exp $ */ 3 4 /* 5 * Copyright (c) 2005 David Gwynne <dlg (at) openbsd.org> 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 #include <sys/param.h> 21 #include <sys/systm.h> 22 #include <sys/device.h> 23 #include <sys/kernel.h> 24 25 #include <machine/intr.h> 26 #include <sys/bus.h> 27 28 #include <dev/usb/usb.h> 29 #include <dev/usb/usbdi.h> 30 #include <dev/usb/usbdivar.h> 31 #include <dev/usb/usb_mem.h> 32 33 #include <dev/usb/ohcireg.h> 34 #include <dev/usb/ohcivar.h> 35 36 #include <arm/xscale/pxa2x0cpu.h> 37 #include <arm/xscale/pxa2x0reg.h> 38 #include <arm/xscale/pxa2x0var.h> 39 #include <arm/xscale/pxa2x0_gpio.h> 40 41 struct pxaohci_softc { 42 ohci_softc_t sc; 43 44 void *sc_ih; 45 }; 46 47 #if 0 48 static void pxaohci_power(int, void *); 49 #endif 50 static void pxaohci_enable(struct pxaohci_softc *); 51 static void pxaohci_disable(struct pxaohci_softc *); 52 53 #define HREAD4(sc,r) bus_space_read_4((sc)->sc.iot, (sc)->sc.ioh, (r)) 54 #define HWRITE4(sc,r,v) bus_space_write_4((sc)->sc.iot, (sc)->sc.ioh, (r), (v)) 55 56 static int 57 pxaohci_match(device_t parent, struct cfdata *cf, void *aux) 58 { 59 struct pxaip_attach_args *pxa = aux; 60 61 if (CPU_IS_PXA270 && strcmp(pxa->pxa_name, cf->cf_name) == 0) { 62 pxa->pxa_size = PXA2X0_USBHC_SIZE; 63 return 1; 64 } 65 return 0; 66 } 67 68 static void 69 pxaohci_attach(device_t parent, device_t self, void *aux) 70 { 71 struct pxaohci_softc *sc = device_private(self); 72 struct pxaip_attach_args *pxa = aux; 73 usbd_status r; 74 75 #ifdef USB_DEBUG 76 { 77 //extern int ohcidebug; 78 //ohcidebug = 16; 79 } 80 #endif 81 82 sc->sc.iot = pxa->pxa_iot; 83 sc->sc.sc_bus.dmatag = pxa->pxa_dmat; 84 sc->sc.sc_size = 0; 85 sc->sc_ih = NULL; 86 sc->sc.sc_dev = self; 87 sc->sc.sc_bus.hci_private = sc; 88 89 aprint_normal("\n"); 90 aprint_naive("\n"); 91 92 /* Map I/O space */ 93 if (bus_space_map(sc->sc.iot, pxa->pxa_addr, pxa->pxa_size, 0, 94 &sc->sc.ioh)) { 95 aprint_error_dev(sc->sc.sc_dev, "couldn't map memory space\n"); 96 return; 97 } 98 sc->sc.sc_size = pxa->pxa_size; 99 100 /* XXX copied from ohci_pci.c. needed? */ 101 bus_space_barrier(sc->sc.iot, sc->sc.ioh, 0, sc->sc.sc_size, 102 BUS_SPACE_BARRIER_READ|BUS_SPACE_BARRIER_WRITE); 103 104 /* start the usb clock */ 105 pxa2x0_clkman_config(CKEN_USBHC, 1); 106 pxaohci_enable(sc); 107 108 /* Disable interrupts, so we don't get any spurious ones. */ 109 bus_space_write_4(sc->sc.iot, sc->sc.ioh, OHCI_INTERRUPT_DISABLE, 110 OHCI_MIE); 111 112 sc->sc_ih = pxa2x0_intr_establish(PXA2X0_INT_USBH1, IPL_USB, 113 ohci_intr, &sc->sc); 114 if (sc->sc_ih == NULL) { 115 aprint_error_dev(sc->sc.sc_dev, 116 "unable to establish interrupt\n"); 117 goto free_map; 118 } 119 120 strlcpy(sc->sc.sc_vendor, "PXA27x", sizeof(sc->sc.sc_vendor)); 121 r = ohci_init(&sc->sc); 122 if (r != USBD_NORMAL_COMPLETION) { 123 aprint_error_dev(sc->sc.sc_dev, "init failed, error=%d\n", r); 124 goto free_intr; 125 } 126 127 #if 0 128 sc->sc.sc_powerhook = powerhook_establish(sc->sc.sc_bus.bdev.dv_xname, 129 pxaohci_power, sc); 130 if (sc->sc.sc_powerhook == NULL) { 131 aprint_error("%s: cannot establish powerhook\n", 132 sc->sc.sc_dev->sc_bus.bdev.dv_xname); 133 } 134 #endif 135 136 sc->sc.sc_child = config_found(self, &sc->sc.sc_bus, usbctlprint); 137 138 return; 139 140 free_intr: 141 pxa2x0_intr_disestablish(sc->sc_ih); 142 sc->sc_ih = NULL; 143 free_map: 144 pxaohci_disable(sc); 145 pxa2x0_clkman_config(CKEN_USBHC, 0); 146 bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size); 147 sc->sc.sc_size = 0; 148 } 149 150 static int 151 pxaohci_detach(device_t self, int flags) 152 { 153 struct pxaohci_softc *sc = device_private(self); 154 int error; 155 156 error = ohci_detach(&sc->sc, flags); 157 if (error) 158 return error; 159 160 #if 0 161 if (sc->sc.sc_powerhook) { 162 powerhook_disestablish(sc->sc.sc_powerhook); 163 sc->sc.sc_powerhook = NULL; 164 } 165 #endif 166 167 if (sc->sc_ih) { 168 pxa2x0_intr_disestablish(sc->sc_ih); 169 sc->sc_ih = NULL; 170 } 171 172 pxaohci_disable(sc); 173 174 /* stop clock */ 175 pxa2x0_clkman_config(CKEN_USBHC, 0); 176 177 if (sc->sc.sc_size) { 178 bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size); 179 sc->sc.sc_size = 0; 180 } 181 182 return 0; 183 } 184 185 #if 0 186 static void 187 pxaohci_power(int why, void *arg) 188 { 189 struct pxaohci_softc *sc = (struct pxaohci_softc *)arg; 190 int s; 191 192 s = splhardusb(); 193 sc->sc.sc_bus.use_polling++; 194 switch (why) { 195 case PWR_STANDBY: 196 case PWR_SUSPEND: 197 #if 0 198 ohci_power(why, &sc->sc); 199 #endif 200 pxa2x0_clkman_config(CKEN_USBHC, 0); 201 break; 202 203 case PWR_RESUME: 204 pxa2x0_clkman_config(CKEN_USBHC, 1); 205 pxaohci_enable(sc); 206 #if 0 207 ohci_power(why, &sc->sc); 208 #endif 209 break; 210 } 211 sc->sc.sc_bus.use_polling--; 212 splx(s); 213 } 214 #endif 215 216 static void 217 pxaohci_enable(struct pxaohci_softc *sc) 218 { 219 uint32_t hr; 220 221 /* Full host reset */ 222 hr = HREAD4(sc, USBHC_HR); 223 HWRITE4(sc, USBHC_HR, (hr & USBHC_HR_MASK) | USBHC_HR_FHR); 224 225 DELAY(USBHC_RST_WAIT); 226 227 hr = HREAD4(sc, USBHC_HR); 228 HWRITE4(sc, USBHC_HR, (hr & USBHC_HR_MASK) & ~(USBHC_HR_FHR)); 229 230 /* Force system bus interface reset */ 231 hr = HREAD4(sc, USBHC_HR); 232 HWRITE4(sc, USBHC_HR, (hr & USBHC_HR_MASK) | USBHC_HR_FSBIR); 233 234 while (HREAD4(sc, USBHC_HR) & USBHC_HR_FSBIR) 235 DELAY(3); 236 237 /* Enable the ports (physically only one, only enable that one?) */ 238 hr = HREAD4(sc, USBHC_HR); 239 HWRITE4(sc, USBHC_HR, (hr & USBHC_HR_MASK) & ~(USBHC_HR_SSE)); 240 hr = HREAD4(sc, USBHC_HR); 241 HWRITE4(sc, USBHC_HR, (hr & USBHC_HR_MASK) & 242 ~(USBHC_HR_SSEP1 | USBHC_HR_SSEP2 | USBHC_HR_SSEP3)); 243 HWRITE4(sc, USBHC_HIE, USBHC_HIE_RWIE | USBHC_HIE_UPRIE); 244 245 hr = HREAD4(sc, USBHC_UHCRHDA); 246 } 247 248 static void 249 pxaohci_disable(struct pxaohci_softc *sc) 250 { 251 uint32_t hr; 252 253 /* Full host reset */ 254 hr = HREAD4(sc, USBHC_HR); 255 HWRITE4(sc, USBHC_HR, (hr & USBHC_HR_MASK) | USBHC_HR_FHR); 256 257 DELAY(USBHC_RST_WAIT); 258 259 hr = HREAD4(sc, USBHC_HR); 260 HWRITE4(sc, USBHC_HR, (hr & USBHC_HR_MASK) & ~(USBHC_HR_FHR)); 261 } 262 263 264 CFATTACH_DECL2_NEW(pxaohci, sizeof(struct pxaohci_softc), 265 pxaohci_match, pxaohci_attach, pxaohci_detach, ohci_activate, NULL, 266 ohci_childdet); 267 268 269
Indexes created Tue Oct 21 16:10:11 GMT 2025