/* $NetBSD: obio.c,v 1.11 2003/07/15 00:25:05 lukem Exp $ */ /*- * Copyright (c) 2001, 2002, 2003 Wasabi Systems, Inc. * All rights reserved. * * Written by Jason R. Thorpe for Wasabi Systems, Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include /* MIPS HW interrupts of IRQ/FIQ respectively */ #define RT305X_INTR 0 #define RT305X_FAST_INTR 1 /* Interrupt levels */ #define INTR_IRQ 0 #define INTR_FIQ 1 int irq_priorities[NIRQS] = { INTR_IRQ, /* SYSCTL */ INTR_FIQ, /* TIMER0 */ INTR_FIQ, /* WDTIMER */ INTR_IRQ, /* Illegal Access */ INTR_IRQ, /* PCM */ INTR_IRQ, /* UART */ INTR_IRQ, /* GPIO */ INTR_FIQ, /* GDMA */ INTR_IRQ, /* NAND */ INTR_IRQ, /* Perfomance Counter */ INTR_IRQ, /* I2S */ INTR_IRQ, /* unknown */ INTR_IRQ, /* UARTLITE */ INTR_IRQ, /* unknown */ INTR_IRQ, /* unknown */ INTR_IRQ, /* unknown */ INTR_IRQ, /* unknown */ INTR_IRQ, /* EtherNet Switch */ INTR_FIQ, /* OTG */ INTR_IRQ, /* unknown */ INTR_IRQ, /* unknown */ INTR_IRQ, /* unknown */ INTR_IRQ, /* unknown */ INTR_IRQ, /* unknown */ INTR_IRQ, /* unknown */ INTR_IRQ, /* unknown */ INTR_IRQ, /* unknown */ INTR_IRQ, /* unknown */ INTR_IRQ, /* unknown */ INTR_IRQ, /* unknown */ INTR_IRQ, /* unknown */ INTR_IRQ, /* unknown */ }; #define REG_READ(o) *((volatile uint32_t *)MIPS_PHYS_TO_KSEG1(INTCTL_BASE + (o))) #define REG_WRITE(o,v) (REG_READ(o)) = (v) static int obio_activate_resource(device_t, device_t, int, int, struct resource *); static device_t obio_add_child(device_t, u_int, const char *, int); static struct resource * obio_alloc_resource(device_t, device_t, int, int *, rman_res_t, rman_res_t, rman_res_t, u_int); static int obio_attach(device_t); static int obio_deactivate_resource(device_t, device_t, int, int, struct resource *); static struct resource_list * obio_get_resource_list(device_t, device_t); static void obio_add_res_child(device_t, const char *, int, long, int, int); static void obio_hinted_child(device_t, const char *, int); static int obio_intr(void *); static int obio_probe(device_t); static int obio_release_resource(device_t, device_t, int, int, struct resource *); static int obio_setup_intr(device_t, device_t, struct resource *, int, driver_filter_t *, driver_intr_t *, void *, void **); static int obio_teardown_intr(device_t, device_t, struct resource *, void *); static void obio_mask_irq(void *source) { int irq; uint32_t irqmask; irq = (int)source; irqmask = 1 << irq; /* disable IRQ */ rt305x_ic_set(IC_INT_DIS, irqmask); } static void obio_unmask_irq(void *source) { int irq; uint32_t irqmask; irq = (int)source; irqmask = 1 << irq; /* enable IRQ */ rt305x_ic_set(IC_INT_ENA, irqmask); } static int obio_probe(device_t dev) { return (BUS_PROBE_NOWILDCARD); } static int obio_attach(device_t dev) { struct obio_softc *sc = device_get_softc(dev); int rid; sc->oba_mem_rman.rm_type = RMAN_ARRAY; sc->oba_mem_rman.rm_descr = "OBIO memory"; if (rman_init(&sc->oba_mem_rman) != 0 || rman_manage_region(&sc->oba_mem_rman, OBIO_MEM_START, OBIO_MEM_END) != 0) panic("obio_attach: failed to set up I/O rman"); sc->oba_irq_rman.rm_type = RMAN_ARRAY; sc->oba_irq_rman.rm_descr = "OBIO IRQ"; if (rman_init(&sc->oba_irq_rman) != 0 || rman_manage_region(&sc->oba_irq_rman, 0, NIRQS-1) != 0) panic("obio_attach: failed to set up IRQ rman"); /* Hook up our interrupt handler. */ if ((sc->sc_irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, RT305X_INTR, RT305X_INTR, 1, RF_SHAREABLE | RF_ACTIVE)) == NULL) { device_printf(dev, "unable to allocate IRQ resource\n"); return (ENXIO); } if ((bus_setup_intr(dev, sc->sc_irq, INTR_TYPE_MISC, obio_intr, NULL, sc, &sc->sc_ih))) { device_printf(dev, "WARNING: unable to register interrupt handler\n"); return (ENXIO); } /* Hook up our FAST interrupt handler. */ if ((sc->sc_fast_irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, RT305X_FAST_INTR, RT305X_FAST_INTR, 1, RF_SHAREABLE | RF_ACTIVE)) == NULL) { device_printf(dev, "unable to allocate IRQ resource\n"); return (ENXIO); } if ((bus_setup_intr(dev, sc->sc_fast_irq, INTR_TYPE_MISC, obio_intr, NULL, sc, &sc->sc_fast_ih))) { device_printf(dev, "WARNING: unable to register interrupt handler\n"); return (ENXIO); } /* disable all interrupts */ rt305x_ic_set(IC_INT_DIS, IC_INT_MASK|IC_LINE_GLOBAL); bus_generic_probe(dev); obio_add_res_child(dev, "rt305x_sysctl", 0, SYSCTL_BASE, (SYSCTL_END - SYSCTL_BASE + 1), IC_SYSCTL); obio_add_res_child(dev, "rt305x_ic", 0, INTCTL_BASE, (INTCTL_END - INTCTL_BASE + 1), -1); #ifdef notyet obio_add_res_child(dev, "timer",0, TIMER_BASE, (TIMER_END - TIMER_BASE + 1), IC_TIMER0); obio_add_res_child(dev, "rt305x_memc", 0, MEMCTRL_BASE, (MEMCTRL_END - MEMCTRL_BASE + 1), -1); obio_add_res_child(dev, "pcm", 0, PCM_BASE, (PCM_END - PCM_BASE + 1), IC_PCM); #endif obio_add_res_child(dev, "uart", 0, UART_BASE, (UART_END - UART_BASE + 1), IC_UART); obio_add_res_child(dev, "gpio", 0, PIO_BASE, (PIO_END - PIO_BASE + 1), IC_PIO); #ifdef notyet obio_add_res_child(dev, "rt305x_dma", 0, GDMA_BASE, (GDMA_END - GDMA_BASE + 1), IC_DMA); obio_add_res_child(dev, "rt305x_nandc", 0, NANDFC_BASE, (NANDFC_END - NANDFC_BASE + 1), IC_NAND); obio_add_res_child(dev, "i2c", 0, I2C_BASE, (I2C_END - I2C_BASE + 1), -1); obio_add_res_child(dev, "i2s", 0, I2S_BASE, (I2S_END - I2S_BASE + 1), IC_I2S); #endif obio_add_res_child(dev, "spi", 0, SPI_BASE, (SPI_END - SPI_BASE + 1), -1); obio_add_res_child(dev, "uart", 1, UARTLITE_BASE, (UARTLITE_END - UARTLITE_BASE + 1), IC_UARTLITE); #if !defined(RT5350) && !defined(MT7620) obio_add_res_child(dev, "cfi", 0, FLASH_BASE, (FLASH_END - FLASH_BASE + 1), -1); obio_add_res_child(dev, "dwcotg", 0, USB_OTG_BASE, (USB_OTG_END - USB_OTG_BASE + 1), IC_OTG); #else obio_add_res_child(dev, "ehci", 0, USB_OTG_BASE, (USB_OTG_END - USB_OTG_BASE + 1), IC_OTG); obio_add_res_child(dev, "ohci", 0, USB_OHCI_BASE, (USB_OHCI_END - USB_OHCI_BASE + 1), IC_OTG); #endif obio_add_res_child(dev, "switch", 0, ETHSW_BASE, (ETHSW_END - ETHSW_BASE + 1), IC_ETHSW); bus_enumerate_hinted_children(dev); bus_generic_attach(dev); /* enable IC */ rt305x_ic_set(IC_INT_ENA, IC_LINE_GLOBAL); return (0); } static struct resource * obio_alloc_resource(device_t bus, device_t child, int type, int *rid, rman_res_t start, rman_res_t end, rman_res_t count, u_int flags) { struct obio_softc *sc = device_get_softc(bus); struct obio_ivar *ivar = device_get_ivars(child); struct resource *rv; struct resource_list_entry *rle; struct rman *rm; int isdefault, needactivate, passthrough; isdefault = (RMAN_IS_DEFAULT_RANGE(start, end) && count == 1); needactivate = flags & RF_ACTIVE; passthrough = (device_get_parent(child) != bus); rle = NULL; if (passthrough) return (BUS_ALLOC_RESOURCE(device_get_parent(bus), child, type, rid, start, end, count, flags)); /* * If this is an allocation of the "default" range for a given RID, * and we know what the resources for this device are (ie. they aren't * maintained by a child bus), then work out the start/end values. */ if (isdefault) { rle = resource_list_find(&ivar->resources, type, *rid); if (rle == NULL) return (NULL); if (rle->res != NULL) { panic("%s: resource entry is busy", __func__); } start = rle->start; end = rle->end; count = rle->count; } switch (type) { case SYS_RES_IRQ: rm = &sc->oba_irq_rman; break; case SYS_RES_MEMORY: rm = &sc->oba_mem_rman; break; default: printf("%s: unknown resource type %d\n", __func__, type); return (0); } rv = rman_reserve_resource(rm, start, end, count, flags, child); if (rv == NULL) { printf("%s: could not reserve resource\n", __func__); return (0); } rman_set_rid(rv, *rid); if (needactivate) { if (bus_activate_resource(child, type, *rid, rv)) { printf("%s: could not activate resource\n", __func__); rman_release_resource(rv); return (0); } } return (rv); } static int obio_activate_resource(device_t bus, device_t child, int type, int rid, struct resource *r) { /* * If this is a memory resource, track the direct mapping * in the uncached MIPS KSEG1 segment. */ if (type == SYS_RES_MEMORY) { void *vaddr; vaddr = (void *)MIPS_PHYS_TO_KSEG1((intptr_t)rman_get_start(r)); rman_set_virtual(r, vaddr); rman_set_bustag(r, mips_bus_space_generic); rman_set_bushandle(r, (bus_space_handle_t)vaddr); } return (rman_activate_resource(r)); } static int obio_deactivate_resource(device_t bus, device_t child, int type, int rid, struct resource *r) { return (rman_deactivate_resource(r)); } static int obio_release_resource(device_t dev, device_t child, int type, int rid, struct resource *r) { struct resource_list *rl; struct resource_list_entry *rle; rl = obio_get_resource_list(dev, child); if (rl == NULL) return (EINVAL); rle = resource_list_find(rl, type, rid); if (rle == NULL) return (EINVAL); rman_release_resource(r); rle->res = NULL; return (0); } static int obio_setup_intr(device_t dev, device_t child, struct resource *ires, int flags, driver_filter_t *filt, driver_intr_t *handler, void *arg, void **cookiep) { struct obio_softc *sc = device_get_softc(dev); struct intr_event *event; int irq, error, priority; uint32_t irqmask; irq = rman_get_start(ires); if (irq >= NIRQS) panic("%s: bad irq %d", __func__, irq); event = sc->sc_eventstab[irq]; if (event == NULL) { error = intr_event_create(&event, (void *)irq, 0, irq, obio_mask_irq, obio_unmask_irq, NULL, NULL, "obio intr%d:", irq); sc->sc_eventstab[irq] = event; } else panic("obio: Can't share IRQs"); intr_event_add_handler(event, device_get_nameunit(child), filt, handler, arg, intr_priority(flags), flags, cookiep); irqmask = 1 << irq; priority = irq_priorities[irq]; if (priority == INTR_FIQ) rt305x_ic_set(IC_INTTYPE, rt305x_ic_get(IC_INTTYPE) | irqmask); else rt305x_ic_set(IC_INTTYPE, rt305x_ic_get(IC_INTTYPE) & ~irqmask); /* enable */ obio_unmask_irq((void*)irq); return (0); } static int obio_teardown_intr(device_t dev, device_t child, struct resource *ires, void *cookie) { struct obio_softc *sc = device_get_softc(dev); int irq, result, priority; uint32_t irqmask; irq = rman_get_start(ires); if (irq >= NIRQS) panic("%s: bad irq %d", __func__, irq); if (sc->sc_eventstab[irq] == NULL) panic("Trying to teardown unoccupied IRQ"); irqmask = (1 << irq); priority = irq_priorities[irq]; if (priority == INTR_FIQ) rt305x_ic_set(IC_INTTYPE, rt305x_ic_get(IC_INTTYPE) & ~irqmask); else rt305x_ic_set(IC_INTTYPE, rt305x_ic_get(IC_INTTYPE) | irqmask); /* disable */ obio_mask_irq((void*)irq); result = intr_event_remove_handler(cookie); if (!result) { sc->sc_eventstab[irq] = NULL; } return (result); } static int obio_intr(void *arg) { struct obio_softc *sc = arg; struct intr_event *event; uint32_t irqstat; int irq; irqstat = rt305x_ic_get(IC_IRQ0STAT); irqstat |= rt305x_ic_get(IC_IRQ1STAT); irq = 0; while (irqstat != 0) { if ((irqstat & 1) == 1) { event = sc->sc_eventstab[irq]; if (!event || TAILQ_EMPTY(&event->ie_handlers)) continue; /* TODO: pass frame as an argument*/ /* TODO: log stray interrupt */ intr_event_handle(event, NULL); } irq++; irqstat >>= 1; } return (FILTER_HANDLED); } static void obio_add_res_child(device_t bus, const char *dname, int dunit, long maddr, int msize, int irq) { device_t child; int result; child = BUS_ADD_CHILD(bus, 0, dname, dunit); result = bus_set_resource(child, SYS_RES_MEMORY, 0, maddr, msize); if (result != 0) device_printf(bus, "warning: bus_set_resource() failed\n"); if (irq != -1) { result = bus_set_resource(child, SYS_RES_IRQ, 0, irq, 1); if (result != 0) device_printf(bus, "warning: bus_set_resource() failed\n"); } } static void obio_hinted_child(device_t bus, const char *dname, int dunit) { long maddr; int msize; int irq; /* * Set hard-wired resources for hinted child using * specific RIDs. */ resource_long_value(dname, dunit, "maddr", &maddr); resource_int_value(dname, dunit, "msize", &msize); if (resource_int_value(dname, dunit, "irq", &irq) == 0) irq = -1; obio_add_res_child(bus, dname, dunit, maddr, msize, irq); } static device_t obio_add_child(device_t bus, u_int order, const char *name, int unit) { device_t child; struct obio_ivar *ivar; ivar = malloc(sizeof(struct obio_ivar), M_DEVBUF, M_WAITOK | M_ZERO); resource_list_init(&ivar->resources); child = device_add_child_ordered(bus, order, name, unit); if (child == NULL) { printf("Can't add child %s%d ordered\n", name, unit); return (0); } device_set_ivars(child, ivar); return (child); } /* * Helper routine for bus_generic_rl_get_resource/bus_generic_rl_set_resource * Provides pointer to resource_list for these routines */ static struct resource_list * obio_get_resource_list(device_t dev, device_t child) { struct obio_ivar *ivar; ivar = device_get_ivars(child); return (&(ivar->resources)); } static int obio_print_all_resources(device_t dev) { struct obio_ivar *ivar = device_get_ivars(dev); struct resource_list *rl = &ivar->resources; int retval = 0; if (STAILQ_FIRST(rl)) retval += printf(" at"); retval += resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#jx"); retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%jd"); return (retval); } static int obio_print_child(device_t bus, device_t child) { int retval = 0; retval += bus_print_child_header(bus, child); retval += obio_print_all_resources(child); if (device_get_flags(child)) retval += printf(" flags %#x", device_get_flags(child)); retval += printf(" on %s\n", device_get_nameunit(bus)); return (retval); } static device_method_t obio_methods[] = { DEVMETHOD(bus_activate_resource, obio_activate_resource), DEVMETHOD(bus_add_child, obio_add_child), DEVMETHOD(bus_alloc_resource, obio_alloc_resource), DEVMETHOD(bus_deactivate_resource, obio_deactivate_resource), DEVMETHOD(bus_get_resource_list, obio_get_resource_list), DEVMETHOD(bus_hinted_child, obio_hinted_child), DEVMETHOD(bus_print_child, obio_print_child), DEVMETHOD(bus_release_resource, obio_release_resource), DEVMETHOD(bus_setup_intr, obio_setup_intr), DEVMETHOD(bus_teardown_intr, obio_teardown_intr), DEVMETHOD(device_attach, obio_attach), DEVMETHOD(device_probe, obio_probe), DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource), DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource), {0, 0}, }; static driver_t obio_driver = { "obio", obio_methods, sizeof(struct obio_softc), }; static devclass_t obio_devclass; DRIVER_MODULE(obio, nexus, obio_driver, obio_devclass, 0, 0);