pxa_obio.c revision 226832
1179595Sbenno/*- 2179595Sbenno * Copyright (c) 2006 Benno Rice. All rights reserved. 3179595Sbenno * 4179595Sbenno * Redistribution and use in source and binary forms, with or without 5179595Sbenno * modification, are permitted provided that the following conditions 6179595Sbenno * are met: 7179595Sbenno * 1. Redistributions of source code must retain the above copyright 8179595Sbenno * notice, this list of conditions and the following disclaimer. 9179595Sbenno * 2. Redistributions in binary form must reproduce the above copyright 10179595Sbenno * notice, this list of conditions and the following disclaimer in the 11179595Sbenno * documentation and/or other materials provided with the distribution. 12179595Sbenno * 13179595Sbenno * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 14179595Sbenno * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 15179595Sbenno * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 16179595Sbenno * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 17179595Sbenno * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 18179595Sbenno * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 19179595Sbenno * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 20179595Sbenno * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21179595Sbenno * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 22179595Sbenno * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23179595Sbenno */ 24179595Sbenno 25179595Sbenno#include <sys/cdefs.h> 26179595Sbenno__FBSDID("$FreeBSD: head/sys/arm/xscale/pxa/pxa_obio.c 226832 2011-10-27 10:21:40Z kevlo $"); 27179595Sbenno 28179595Sbenno#include <sys/param.h> 29179595Sbenno#include <sys/systm.h> 30179595Sbenno#include <sys/bus.h> 31179595Sbenno#include <sys/kernel.h> 32179595Sbenno#include <sys/module.h> 33179595Sbenno#include <sys/malloc.h> 34179595Sbenno#include <sys/rman.h> 35179595Sbenno#include <machine/bus.h> 36179595Sbenno#include <machine/intr.h> 37179595Sbenno 38179595Sbenno#include <arm/xscale/pxa/pxavar.h> 39179595Sbenno#include <arm/xscale/pxa/pxareg.h> 40179595Sbenno 41179595Sbennostatic void pxa_identify(driver_t *, device_t); 42179595Sbennostatic int pxa_probe(device_t); 43179595Sbennostatic int pxa_attach(device_t); 44179595Sbenno 45179595Sbennostatic int pxa_print_child(device_t, device_t); 46179595Sbenno 47179595Sbennostatic int pxa_setup_intr(device_t, device_t, struct resource *, int, 48179595Sbenno driver_filter_t *, driver_intr_t *, void *, void **); 49179595Sbennostatic int pxa_read_ivar(device_t, device_t, int, uintptr_t *); 50179595Sbenno 51179595Sbennostatic struct resource_list * pxa_get_resource_list(device_t, device_t); 52179595Sbennostatic struct resource * pxa_alloc_resource(device_t, device_t, int, 53179595Sbenno int *, u_long, u_long, u_long, u_int); 54179595Sbennostatic int pxa_release_resource(device_t, device_t, int, 55179595Sbenno int, struct resource *); 56179595Sbennostatic int pxa_activate_resource(device_t, device_t, 57179595Sbenno int, int, struct resource *); 58179595Sbenno 59179595Sbennostatic struct resource * pxa_alloc_gpio_irq(device_t, device_t, int, 60179595Sbenno int *, u_long, u_long, u_long, u_int); 61179595Sbenno 62179595Sbennostruct obio_device { 63179595Sbenno const char *od_name; 64179595Sbenno u_long od_base; 65179595Sbenno u_long od_size; 66179595Sbenno u_int od_irqs[5]; 67179595Sbenno struct resource_list od_resources; 68179595Sbenno}; 69179595Sbenno 70179595Sbennostatic struct obio_device obio_devices[] = { 71179595Sbenno { "icu", PXA2X0_INTCTL_BASE, PXA2X0_INTCTL_SIZE, { 0 } }, 72179595Sbenno { "timer", PXA2X0_OST_BASE, PXA2X0_OST_SIZE, { PXA2X0_INT_OST0, PXA2X0_INT_OST1, PXA2X0_INT_OST2, PXA2X0_INT_OST3, 0 } }, 73179595Sbenno { "dmac", PXA2X0_DMAC_BASE, PXA2X0_DMAC_SIZE, { PXA2X0_INT_DMA, 0 } }, 74179595Sbenno { "gpio", PXA2X0_GPIO_BASE, PXA250_GPIO_SIZE, { PXA2X0_INT_GPIO0, PXA2X0_INT_GPIO1, PXA2X0_INT_GPION, 0 } }, 75179595Sbenno { "uart", PXA2X0_FFUART_BASE, PXA2X0_FFUART_SIZE, { PXA2X0_INT_FFUART, 0 } }, 76179595Sbenno { "uart", PXA2X0_BTUART_BASE, PXA2X0_BTUART_SIZE, { PXA2X0_INT_BTUART, 0 } }, 77179595Sbenno { "uart", PXA2X0_STUART_BASE, PXA2X0_STUART_SIZE, { PXA2X0_INT_STUART, 0 } }, 78179595Sbenno { "uart", PXA2X0_HWUART_BASE, PXA2X0_HWUART_SIZE, { PXA2X0_INT_HWUART, 0 } }, 79179595Sbenno { "smi", PXA2X0_CS0_START, PXA2X0_CS_SIZE * 6, { 0 } }, 80179595Sbenno { NULL, 0, 0, { 0 } } 81179595Sbenno}; 82179595Sbenno 83179595Sbennovoid 84179595Sbennopxa_identify(driver_t *driver, device_t parent) 85179595Sbenno{ 86179595Sbenno 87179595Sbenno BUS_ADD_CHILD(parent, 0, "pxa", 0); 88179595Sbenno} 89179595Sbenno 90179595Sbennoint 91179595Sbennopxa_probe(device_t dev) 92179595Sbenno{ 93179595Sbenno 94179595Sbenno device_set_desc(dev, "XScale PXA On-board IO"); 95179595Sbenno return (0); 96179595Sbenno} 97179595Sbenno 98179595Sbennoint 99179595Sbennopxa_attach(device_t dev) 100179595Sbenno{ 101179595Sbenno struct obio_softc *sc; 102179595Sbenno struct obio_device *od; 103179595Sbenno int i; 104179595Sbenno device_t child; 105179595Sbenno 106179595Sbenno sc = device_get_softc(dev); 107179595Sbenno 108179595Sbenno sc->obio_bst = obio_tag; 109179595Sbenno 110179595Sbenno sc->obio_mem.rm_type = RMAN_ARRAY; 111179595Sbenno sc->obio_mem.rm_descr = "PXA2X0 OBIO Memory"; 112179595Sbenno if (rman_init(&sc->obio_mem) != 0) 113179595Sbenno panic("pxa_attach: failed to init obio mem rman"); 114179595Sbenno if (rman_manage_region(&sc->obio_mem, 0, PXA250_PERIPH_END) != 0) 115179595Sbenno panic("pxa_attach: failed to set up obio mem rman"); 116179595Sbenno 117179595Sbenno sc->obio_irq.rm_type = RMAN_ARRAY; 118179595Sbenno sc->obio_irq.rm_descr = "PXA2X0 OBIO IRQ"; 119179595Sbenno if (rman_init(&sc->obio_irq) != 0) 120179595Sbenno panic("pxa_attach: failed to init obio irq rman"); 121179595Sbenno if (rman_manage_region(&sc->obio_irq, 0, 31) != 0) 122179595Sbenno panic("pxa_attach: failed to set up obio irq rman (main irqs)"); 123179595Sbenno if (rman_manage_region(&sc->obio_irq, IRQ_GPIO0, IRQ_GPIO_MAX) != 0) 124179595Sbenno panic("pxa_attach: failed to set up obio irq rman (gpio irqs)"); 125179595Sbenno 126179595Sbenno for (od = obio_devices; od->od_name != NULL; od++) { 127179595Sbenno resource_list_init(&od->od_resources); 128179595Sbenno 129179595Sbenno resource_list_add(&od->od_resources, SYS_RES_MEMORY, 0, 130179595Sbenno od->od_base, od->od_base + od->od_size, od->od_size); 131179595Sbenno 132179595Sbenno for (i = 0; od->od_irqs[i] != 0; i++) { 133179595Sbenno resource_list_add(&od->od_resources, SYS_RES_IRQ, i, 134179595Sbenno od->od_irqs[i], od->od_irqs[i], 1); 135179595Sbenno } 136179595Sbenno 137179595Sbenno child = device_add_child(dev, od->od_name, -1); 138179595Sbenno device_set_ivars(child, od); 139179595Sbenno } 140179595Sbenno 141179595Sbenno bus_generic_probe(dev); 142179595Sbenno bus_generic_attach(dev); 143179595Sbenno 144179595Sbenno return (0); 145179595Sbenno} 146179595Sbenno 147179595Sbennostatic int 148179595Sbennopxa_print_child(device_t dev, device_t child) 149179595Sbenno{ 150179595Sbenno struct obio_device *od; 151179595Sbenno int retval; 152179595Sbenno 153179595Sbenno od = (struct obio_device *)device_get_ivars(child); 154179595Sbenno if (od == NULL) 155179595Sbenno panic("Unknown device on pxa0"); 156179595Sbenno 157179595Sbenno retval = 0; 158179595Sbenno 159179595Sbenno retval += bus_print_child_header(dev, child); 160179595Sbenno 161179595Sbenno retval += resource_list_print_type(&od->od_resources, "at mem", 162179595Sbenno SYS_RES_MEMORY, "0x%08lx"); 163179595Sbenno retval += resource_list_print_type(&od->od_resources, "irq", 164179595Sbenno SYS_RES_IRQ, "%ld"); 165179595Sbenno 166179595Sbenno retval += bus_print_child_footer(dev, child); 167179595Sbenno 168179595Sbenno return (retval); 169179595Sbenno} 170179595Sbenno 171179595Sbennostatic int 172179595Sbennopxa_setup_intr(device_t dev, device_t child, struct resource *irq, int flags, 173179595Sbenno driver_filter_t *filter, driver_intr_t *ithread, void *arg, void **cookiep) 174179595Sbenno{ 175179595Sbenno struct obio_softc *sc; 176226832Skevlo int error; 177179595Sbenno 178179595Sbenno sc = (struct obio_softc *)device_get_softc(dev); 179179595Sbenno 180226832Skevlo error = BUS_SETUP_INTR(device_get_parent(dev), child, irq, flags, 181226832Skevlo filter, ithread, arg, cookiep); 182226832Skevlo if (error) 183226832Skevlo return (error); 184179595Sbenno arm_unmask_irq(rman_get_start(irq)); 185179595Sbenno return (0); 186179595Sbenno} 187179595Sbenno 188179595Sbennostatic int 189179701Skevlopxa_teardown_intr(device_t dev, device_t child, struct resource *ires, 190179701Skevlo void *cookie) 191179701Skevlo{ 192179701Skevlo return (BUS_TEARDOWN_INTR(device_get_parent(dev), child, ires, cookie));} 193179701Skevlo 194179701Skevlostatic int 195179595Sbennopxa_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 196179595Sbenno{ 197179595Sbenno struct obio_device *od; 198179595Sbenno 199179595Sbenno od = (struct obio_device *)device_get_ivars(child); 200179595Sbenno 201179595Sbenno switch (which) { 202179595Sbenno case PXA_IVAR_BASE: 203179595Sbenno *((u_long *)result) = od->od_base; 204179595Sbenno break; 205179595Sbenno 206179595Sbenno default: 207179595Sbenno return (ENOENT); 208179595Sbenno } 209179595Sbenno 210179595Sbenno return (0); 211179595Sbenno} 212179595Sbenno 213179595Sbennostatic struct resource_list * 214179595Sbennopxa_get_resource_list(device_t dev, device_t child) 215179595Sbenno{ 216179595Sbenno struct obio_device *od; 217179595Sbenno 218179595Sbenno od = (struct obio_device *)device_get_ivars(child); 219179595Sbenno 220179595Sbenno if (od == NULL) 221179595Sbenno return (NULL); 222179595Sbenno 223179595Sbenno return (&od->od_resources); 224179595Sbenno} 225179595Sbenno 226179595Sbennostatic struct resource * 227179595Sbennopxa_alloc_resource(device_t dev, device_t child, int type, int *rid, 228179595Sbenno u_long start, u_long end, u_long count, u_int flags) 229179595Sbenno{ 230179595Sbenno struct obio_softc *sc; 231179595Sbenno struct obio_device *od; 232179595Sbenno struct resource *rv; 233179595Sbenno struct resource_list *rl; 234179595Sbenno struct resource_list_entry *rle; 235179595Sbenno struct rman *rm; 236179595Sbenno int needactivate; 237179595Sbenno 238179595Sbenno sc = (struct obio_softc *)device_get_softc(dev); 239179595Sbenno od = (struct obio_device *)device_get_ivars(child); 240179595Sbenno rl = &od->od_resources; 241179595Sbenno 242179595Sbenno rle = resource_list_find(rl, type, *rid); 243179595Sbenno if (rle == NULL) { 244179595Sbenno /* We can allocate GPIO-based IRQs lazily. */ 245179595Sbenno if (type == SYS_RES_IRQ) 246179595Sbenno return (pxa_alloc_gpio_irq(dev, child, type, rid, 247179595Sbenno start, end, count, flags)); 248179595Sbenno return (NULL); 249179595Sbenno } 250179595Sbenno if (rle->res != NULL) 251179595Sbenno panic("pxa_alloc_resource: resource is busy"); 252179595Sbenno 253179595Sbenno switch (type) { 254179595Sbenno case SYS_RES_IRQ: 255179595Sbenno rm = &sc->obio_irq; 256179595Sbenno break; 257179595Sbenno 258179595Sbenno case SYS_RES_MEMORY: 259179595Sbenno rm = &sc->obio_mem; 260179595Sbenno break; 261179595Sbenno 262179595Sbenno default: 263179595Sbenno return (NULL); 264179595Sbenno } 265179595Sbenno 266179595Sbenno needactivate = flags & RF_ACTIVE; 267179595Sbenno flags &= ~RF_ACTIVE; 268179595Sbenno rv = rman_reserve_resource(rm, rle->start, rle->end, rle->count, flags, 269179595Sbenno child); 270179595Sbenno if (rv == NULL) 271179595Sbenno return (NULL); 272179595Sbenno rle->res = rv; 273179595Sbenno rman_set_rid(rv, *rid); 274179595Sbenno if (type == SYS_RES_MEMORY) { 275179595Sbenno rman_set_bustag(rv, sc->obio_bst); 276179595Sbenno rman_set_bushandle(rv, rle->start); 277179595Sbenno } 278179595Sbenno 279179595Sbenno if (needactivate) { 280179595Sbenno if (bus_activate_resource(child, type, *rid, rv)) { 281179595Sbenno rman_release_resource(rv); 282179595Sbenno return (NULL); 283179595Sbenno } 284179595Sbenno } 285179595Sbenno 286179595Sbenno return (rv); 287179595Sbenno} 288179595Sbenno 289179595Sbennostatic int 290179595Sbennopxa_release_resource(device_t dev, device_t child, int type, int rid, 291179595Sbenno struct resource *r) 292179595Sbenno{ 293179595Sbenno struct obio_device *od; 294179595Sbenno struct resource_list *rl; 295179595Sbenno struct resource_list_entry *rle; 296179595Sbenno 297179595Sbenno od = (struct obio_device *)device_get_ivars(child); 298179595Sbenno rl = &od->od_resources; 299179595Sbenno 300179595Sbenno if (type == SYS_RES_IOPORT) 301179595Sbenno type = SYS_RES_MEMORY; 302179595Sbenno 303179595Sbenno rle = resource_list_find(rl, type, rid); 304179595Sbenno 305179595Sbenno if (!rle) 306179595Sbenno panic("pxa_release_resource: can't find resource"); 307179595Sbenno if (!rle->res) 308179595Sbenno panic("pxa_release_resource: resource entry is not busy"); 309179595Sbenno 310179595Sbenno rman_release_resource(rle->res); 311179595Sbenno rle->res = NULL; 312179595Sbenno 313179595Sbenno return (0); 314179595Sbenno} 315179595Sbenno 316179595Sbennostatic int 317179595Sbennopxa_activate_resource(device_t dev, device_t child, int type, int rid, 318179595Sbenno struct resource *r) 319179595Sbenno{ 320179595Sbenno 321179595Sbenno return (rman_activate_resource(r)); 322179595Sbenno} 323179595Sbenno 324179595Sbennostatic device_method_t pxa_methods[] = { 325179701Skevlo DEVMETHOD(device_identify, pxa_identify), 326179701Skevlo DEVMETHOD(device_probe, pxa_probe), 327179701Skevlo DEVMETHOD(device_attach, pxa_attach), 328179595Sbenno 329179701Skevlo DEVMETHOD(bus_print_child, pxa_print_child), 330179595Sbenno 331179701Skevlo DEVMETHOD(bus_read_ivar, pxa_read_ivar), 332179701Skevlo DEVMETHOD(bus_setup_intr, pxa_setup_intr), 333179701Skevlo DEVMETHOD(bus_teardown_intr, pxa_teardown_intr), 334179595Sbenno 335179701Skevlo DEVMETHOD(bus_get_resource_list, pxa_get_resource_list), 336179701Skevlo DEVMETHOD(bus_alloc_resource, pxa_alloc_resource), 337179701Skevlo DEVMETHOD(bus_release_resource, pxa_release_resource), 338179701Skevlo DEVMETHOD(bus_activate_resource, pxa_activate_resource), 339179595Sbenno 340179595Sbenno {0, 0} 341179595Sbenno}; 342179595Sbenno 343179595Sbennostatic driver_t pxa_driver = { 344179595Sbenno "pxa", 345179595Sbenno pxa_methods, 346179595Sbenno sizeof(struct obio_softc), 347179595Sbenno}; 348179595Sbenno 349179595Sbennostatic devclass_t pxa_devclass; 350179595Sbenno 351179595SbennoDRIVER_MODULE(pxa, nexus, pxa_driver, pxa_devclass, 0, 0); 352179595Sbenno 353179595Sbennostatic struct resource * 354179595Sbennopxa_alloc_gpio_irq(device_t dev, device_t child, int type, int *rid, 355179595Sbenno u_long start, u_long end, u_long count, u_int flags) 356179595Sbenno{ 357179595Sbenno struct obio_softc *sc; 358179595Sbenno struct obio_device *od; 359179595Sbenno struct resource_list *rl; 360179595Sbenno struct resource_list_entry *rle; 361179595Sbenno struct resource *rv; 362179595Sbenno struct rman *rm; 363179595Sbenno int needactivate; 364179595Sbenno 365179595Sbenno sc = device_get_softc(dev); 366179595Sbenno od = device_get_ivars(child); 367179595Sbenno rl = &od->od_resources; 368179595Sbenno rm = &sc->obio_irq; 369179595Sbenno 370179595Sbenno needactivate = flags & RF_ACTIVE; 371179595Sbenno flags &= ~RF_ACTIVE; 372179595Sbenno rv = rman_reserve_resource(rm, start, end, count, flags, child); 373179595Sbenno if (rv == NULL) 374179595Sbenno return (NULL); 375179595Sbenno 376179595Sbenno resource_list_add(rl, type, *rid, start, end, count); 377179595Sbenno rle = resource_list_find(rl, type, *rid); 378179595Sbenno if (rle == NULL) 379179595Sbenno panic("pxa_alloc_gpio_irq: unexpectedly can't find resource"); 380179595Sbenno 381179595Sbenno rle->res = rv; 382179595Sbenno rle->start = rman_get_start(rv); 383179595Sbenno rle->end = rman_get_end(rv); 384179595Sbenno rle->count = count; 385179595Sbenno 386179595Sbenno if (needactivate) { 387179595Sbenno if (bus_activate_resource(child, type, *rid, rv)) { 388179595Sbenno rman_release_resource(rv); 389179595Sbenno return (NULL); 390179595Sbenno } 391179595Sbenno } 392179595Sbenno 393179595Sbenno if (bootverbose) 394179595Sbenno device_printf(dev, "lazy allocation of irq %ld for %s\n", 395179595Sbenno start, device_get_nameunit(child)); 396179595Sbenno 397179595Sbenno return (rv); 398179595Sbenno} 399