gb225_pcic.c revision 1.10
1 /* 2 * Copyright (c) 2002, 2003, 2005 Genetec corp. All rights reserved. 3 * 4 * PCMCIA/CF support for TWINTAIL (G4255EB) 5 * Written by Hiroyuki Bessho for Genetec corp. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of Genetec corp. may not be used to endorse 16 * or promote products derived from this software without specific prior 17 * written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY GENETEC CORP. ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GENETEC CORP. 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/types.h> 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/device.h> 36 #include <sys/callout.h> 37 #include <sys/kernel.h> 38 #include <sys/kthread.h> 39 #include <sys/malloc.h> 40 #include <uvm/uvm.h> 41 42 #include <machine/bus.h> 43 #include <machine/intr.h> 44 45 #include <dev/pcmcia/pcmciareg.h> 46 #include <dev/pcmcia/pcmciavar.h> 47 #include <dev/pcmcia/pcmciachip.h> 48 49 #include <arch/arm/xscale/pxa2x0var.h> 50 #include <arch/arm/xscale/pxa2x0reg.h> 51 #include <arch/arm/sa11x0/sa11xx_pcicvar.h> 52 #include <arch/evbarm/g42xxeb/g42xxeb_reg.h> 53 #include <arch/evbarm/g42xxeb/g42xxeb_var.h> 54 #include <arch/evbarm/g42xxeb/gb225reg.h> 55 #include <arch/evbarm/g42xxeb/gb225var.h> 56 57 58 //#define DONT_USE_CARD_DETECT_INTR 59 60 #define PCMCIA_INT G42XXEB_INT_EXT1 61 #define CF_INT G42XXEB_INT_EXT0 62 63 #ifdef DEBUG 64 #define DPRINTF(arg) printf arg 65 #else 66 #define DPRINTF(arg) 67 #endif 68 69 struct opcic_softc; 70 71 struct opcic_socket { 72 struct sapcic_socket ss; /* inherit socket for sa11x0 pcic */ 73 74 #if 0 75 int voltage; /* card power voltage selected by 76 upper layer */ 77 #endif 78 }; 79 80 struct opcic_softc { 81 struct sapcic_softc sc_pc; /* inherit SA11xx pcic */ 82 83 struct opcic_socket sc_socket[2]; 84 int sc_cards; 85 bus_space_handle_t sc_memctl_ioh; 86 }; 87 88 static int opcic_match(struct device *, struct cfdata *, void *); 89 static void opcic_attach(struct device *, struct device *, void *); 90 static int opcic_print(void *, const char *); 91 92 static int opcic_read(struct sapcic_socket *, int); 93 static void opcic_write(struct sapcic_socket *, int, int); 94 static void opcic_set_power(struct sapcic_socket *, int); 95 static void opcic_clear_intr(int); 96 static void *opcic_intr_establish(struct sapcic_socket *, int, 97 int (*)(void *), void *); 98 static void opcic_intr_disestablish(struct sapcic_socket *, void *); 99 #ifndef DONT_USE_CARD_DETECT_INTR 100 static int opcic_card_detect(void *, int); 101 #endif 102 103 CFATTACH_DECL(opcic, sizeof(struct opcic_softc), 104 opcic_match, opcic_attach, NULL, NULL); 105 106 static struct sapcic_tag opcic_tag = { 107 opcic_read, 108 opcic_write, 109 opcic_set_power, 110 opcic_clear_intr, 111 opcic_intr_establish, 112 opcic_intr_disestablish, 113 }; 114 115 116 #define HAVE_CARD(r) (((r)&CARDDET_DET)==0) 117 118 static inline uint8_t 119 opcic_read_card_status(struct opcic_socket *so) 120 { 121 struct opcic_softc *sc = (struct opcic_softc *)(so->ss.sc); 122 struct opio_softc *osc = 123 device_private(device_parent(sc->sc_pc.sc_dev)); 124 125 return bus_space_read_1(osc->sc_iot, osc->sc_ioh, 126 GB225_CFDET + 2 * so->ss.socket); 127 128 } 129 130 static int 131 opcic_match(struct device *parent, struct cfdata *cf, void *aux) 132 { 133 return 1; 134 } 135 136 static void 137 opcic_attach(struct device *parent, struct device *self, void *aux) 138 { 139 int i; 140 struct pcmciabus_attach_args paa; 141 struct opcic_softc *sc = (struct opcic_softc *)self; 142 struct opio_softc *psc = (struct opio_softc *)parent; 143 struct obio_softc *bsd = (struct obio_softc *)device_parent(parent); 144 bus_space_handle_t memctl_ioh = bsd->sc_memctl_ioh; 145 bus_space_tag_t iot = psc->sc_iot; 146 147 printf("\n"); 148 149 /* tell PXA2X0 that we have two sockets */ 150 #if 0 151 bus_space_write_4(iot, memctl_ioh, MEMCTL_MECR, MECR_NOS); 152 #else 153 bus_space_write_4(iot, memctl_ioh, MEMCTL_MECR, MECR_CIT|MECR_NOS); 154 #endif 155 sc->sc_pc.sc_iot = psc->sc_iot; 156 sc->sc_memctl_ioh = memctl_ioh; 157 158 sc->sc_cards = 0; 159 160 for(i = 0; i < 2; i++) { 161 sc->sc_socket[i].ss.sc = &sc->sc_pc; 162 sc->sc_socket[i].ss.socket = i; 163 sc->sc_socket[i].ss.pcictag_cookie = NULL; 164 sc->sc_socket[i].ss.pcictag = &opcic_tag; 165 sc->sc_socket[i].ss.event_thread = NULL; 166 sc->sc_socket[i].ss.event = 0; 167 sc->sc_socket[i].ss.laststatus = CARDDET_NOCARD; 168 sc->sc_socket[i].ss.shutdown = 0; 169 170 sc->sc_socket[i].ss.power_capability = 171 (SAPCIC_POWER_5V|SAPCIC_POWER_3V); 172 173 bus_space_write_4(iot, memctl_ioh, MEMCTL_MCIO(i), 174 MC_TIMING_VAL(1,1,1)); 175 #if 0 176 bus_space_write_4(iot, memctl_ioh, MEMCTL_MCATT(i), 177 MC_TIMING_VAL(31,31,31)); 178 #endif 179 180 paa.paa_busname = "pcmcia"; 181 paa.pct = (pcmcia_chipset_tag_t)&sa11x0_pcmcia_functions; 182 paa.pch = (pcmcia_chipset_handle_t)&sc->sc_socket[i].ss; 183 paa.iobase = 0; 184 paa.iosize = 0x4000000; 185 186 sc->sc_socket[i].ss.pcmcia = 187 config_found_ia(sc->sc_pc.sc_dev, 188 "pcmciabus", &paa, opcic_print); 189 190 #ifndef DONT_USE_CARD_DETECT_INTR 191 /* interrupt for card insertion/removal */ 192 opio_intr_establish(psc, 193 i==0 ? OPIO_INTR_CF_INSERT : OPIO_INTR_PCMCIA_INSERT, 194 IPL_BIO, opcic_card_detect, &sc->sc_socket[i]); 195 #else 196 bus_space_write_4(iot, ioh, MEMCTL_MECR, MECR_NOS | MECR_CIT); 197 198 #endif 199 200 /* schedule kthread creation */ 201 sapcic_kthread_create(&sc->sc_socket[i].ss); 202 } 203 204 } 205 206 static int 207 opcic_print(void *aux, const char *name) 208 { 209 return (UNCONF); 210 } 211 212 #ifndef DONT_USE_CARD_DETECT_INTR 213 static int 214 opcic_card_detect(void *arg, int val) 215 { 216 struct opcic_socket *socket = arg; 217 struct opcic_softc *sc = (struct opcic_softc *)socket->ss.sc; 218 bus_space_tag_t iot = sc->sc_pc.sc_iot; 219 bus_space_handle_t memctl_ioh = sc->sc_memctl_ioh; 220 int sock_no = socket->ss.socket; 221 int last, s; 222 223 s = splbio(); 224 last = sc->sc_cards; 225 if (HAVE_CARD(val)) { 226 sc->sc_cards |= 1<<sock_no; 227 /* if it is the first card, turn on expansion memory 228 * control. */ 229 if (last == 0) 230 bus_space_write_4(iot, memctl_ioh, MEMCTL_MECR, 231 MECR_NOS | MECR_CIT); 232 } 233 else { 234 sc->sc_cards &= ~(1<<sock_no); 235 /* if we loast all cards, turn off expansion memory 236 * control. */ 237 #if 0 238 if (sc->sc_cards == 0) 239 bus_space_write_4(iot, memctl_ioh, 240 MEMCTL_MECR, MECR_NOS); 241 #endif 242 } 243 splx(s); 244 245 DPRINTF(("%s: card %d %s\n", device_xname(sc->sc_pc.sc_dev), sock_no, 246 HAVE_CARD(val) ? "inserted" : "removed")); 247 248 sapcic_intr(arg); 249 250 return 1; 251 } 252 #endif /* DONT_USE_CARD_DETECT_INTR */ 253 254 static int 255 opcic_read(struct sapcic_socket *__so, int which) 256 { 257 struct opcic_socket *so = (struct opcic_socket *)__so; 258 uint8_t reg; 259 260 reg = opcic_read_card_status(so); 261 262 switch (which) { 263 case SAPCIC_STATUS_CARD: 264 return HAVE_CARD(reg) ? 265 SAPCIC_CARD_VALID : SAPCIC_CARD_INVALID; 266 267 case SAPCIC_STATUS_VS1: 268 return (reg & CARDDET_NVS1) == 0; 269 270 case SAPCIC_STATUS_VS2: 271 return (reg & CARDDET_NVS2) == 0; 272 273 case SAPCIC_STATUS_READY: 274 return 1; 275 276 default: 277 panic("%s: bogus register", __func__); 278 } 279 } 280 281 static void 282 opcic_write(struct sapcic_socket *__so, int which, int arg) 283 { 284 struct opcic_socket *so = (struct opcic_socket *)__so; 285 struct opcic_softc *sc = (struct opcic_softc *)so->ss.sc; 286 struct opio_softc *psc = 287 device_private(device_parent(sc->sc_pc.sc_dev)); 288 struct obio_softc *bsc = 289 device_private(device_parent(psc->sc_dev)); 290 291 switch (which) { 292 case SAPCIC_CONTROL_RESET: 293 obio_peripheral_reset(bsc, so->ss.socket, arg); 294 delay(500*1000); 295 break; 296 297 case SAPCIC_CONTROL_LINEENABLE: 298 break; 299 300 case SAPCIC_CONTROL_WAITENABLE: 301 break; 302 303 case SAPCIC_CONTROL_POWERSELECT: 304 #if 0 305 so->voltage = arg; 306 #endif 307 break; 308 309 default: 310 panic("%s: bogus register", __func__); 311 } 312 } 313 314 static void 315 opcic_set_power(struct sapcic_socket *__so, int arg) 316 { 317 struct opcic_socket *so = (struct opcic_socket *)__so; 318 struct opcic_softc *sc = (struct opcic_softc *)so->ss.sc; 319 struct opio_softc *psc = 320 device_private(device_parent(sc->sc_pc.sc_dev)); 321 int shift, save; 322 volatile uint8_t *p; 323 324 if( arg < 0 || SAPCIC_POWER_5V < arg ) 325 panic("sacpcic_set_power: bogus arg\n"); 326 327 DPRINTF(("card %d: DET=%x\n", 328 so->ss.socket, 329 bus_space_read_1(psc->sc_iot, psc->sc_ioh, 330 GB225_CFDET + 2*so->ss.socket))); 331 332 p = (volatile uint8_t *)bus_space_vaddr(psc->sc_iot, psc->sc_ioh) 333 + GB225_CARDPOW; 334 335 shift = 4 * !so->ss.socket; 336 337 save = disable_interrupts(I32_bit); 338 *p = (*p & ~(0x0f << shift)) | ((CARDPOW_VPPVCC | (arg<<2)) << shift); 339 restore_interrupts(save); 340 341 DPRINTF(("card %d power: %x\n", so->ss.socket, *p)); 342 } 343 344 static void 345 opcic_clear_intr(int arg) 346 { 347 } 348 349 static void * 350 opcic_intr_establish(struct sapcic_socket *so, int level, 351 int (* ih_fun)(void *), void *ih_arg) 352 { 353 struct opcic_softc *sc = (struct opcic_softc *)so->sc; 354 struct opio_softc *psc = 355 device_private(device_parent(sc->sc_pc.sc_dev)); 356 struct obio_softc *bsc = 357 device_private(device_parent(psc->sc_dev)); 358 int irq; 359 360 DPRINTF(("opcic_intr_establish %d\n", so->socket)); 361 362 irq = so->socket ? PCMCIA_INT : CF_INT; 363 return obio_intr_establish(bsc, irq, level, IST_EDGE_FALLING, 364 ih_fun, ih_arg); 365 } 366 367 static void 368 opcic_intr_disestablish(struct sapcic_socket *so, void *ih) 369 { 370 struct opcic_softc *sc = (struct opcic_softc *)so->sc; 371 struct opio_softc *psc = 372 device_private(device_parent(sc->sc_pc.sc_dev)); 373 struct obio_softc *bsc = 374 (struct obio_softc *) device_parent(psc->sc_dev); 375 int (* func)(void *) = ((struct obio_handler *)ih)->func; 376 377 int irq = so->socket ? PCMCIA_INT : CF_INT; 378 379 obio_intr_disestablish(bsc, irq, func); 380 } 381
Indexes created Wed Oct 01 15:09:59 GMT 2025