/* $NetBSD: ixp425.c,v 1.10 2005/12/11 12:16:51 christos Exp $ */ /* * Copyright (c) 2003 * Ichiro FUKUHARA . * All rights reserved. * * 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Ichiro FUKUHARA. * 4. The name of the company nor the name of the author may be used to * endorse or promote products derived from this software without specific * prior written permission. * * THIS SOFTWARE IS PROVIDED BY ICHIRO FUKUHARA ``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 ICHIRO FUKUHARA OR THE VOICES IN HIS HEAD 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("$FreeBSD$"); #define _ARM32_BUS_DMA_PRIVATE #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include volatile uint32_t intr_enabled; uint32_t intr_steer = 0; struct ixp425_softc *ixp425_softc = NULL; static int ixp425_probe(device_t); static void ixp425_identify(driver_t *, device_t); static int ixp425_attach(device_t); static struct { uint32_t hwbase; uint32_t size; uint32_t vbase; } hwvtrans[] = { { IXP425_IO_HWBASE, IXP425_IO_SIZE, IXP425_IO_VBASE }, { IXP425_EXP_HWBASE, IXP425_EXP_SIZE, IXP425_EXP_VBASE }, { IXP425_PCI_HWBASE, IXP425_PCI_SIZE, IXP425_PCI_VBASE }, { IXP425_PCI_MEM_HWBASE,IXP425_PCI_MEM_SIZE, IXP425_PCI_MEM_VBASE }, #if 0 { IXP425_PCI_IO_HWBASE, IXP425_PCI_IO_SIZE, IXP425_PCI_IO_VBASE }, #endif { IXP425_MCU_HWBASE, IXP425_MCU_SIZE, IXP425_MCU_VBASE }, { IXP425_QMGR_HWBASE, IXP425_QMGR_SIZE, IXP425_QMGR_VBASE }, { IXP425_NPE_A_HWBASE, IXP425_NPE_A_SIZE, IXP425_NPE_A_VBASE }, { IXP425_NPE_B_HWBASE, IXP425_NPE_B_SIZE, IXP425_NPE_B_VBASE }, { IXP425_NPE_C_HWBASE, IXP425_NPE_C_SIZE, IXP425_NPE_C_VBASE }, { IXP425_MAC_A_HWBASE, IXP425_MAC_A_SIZE, IXP425_MAC_A_VBASE }, { IXP425_MAC_B_HWBASE, IXP425_MAC_B_SIZE, IXP425_MAC_B_VBASE }, /* Gateworks Avila IDE/CF is mapped here */ { IXP425_EXP_BUS_CS1_HWBASE, IXP425_EXP_BUS_SIZE, IXP425_EXP_BUS_CS1_VBASE }, { IXP425_EXP_BUS_CS2_HWBASE, IXP425_EXP_BUS_SIZE, IXP425_EXP_BUS_CS2_VBASE }, /* ADI Pronghorn Metro IDE/CF is mapped here */ { IXP425_EXP_BUS_CS3_HWBASE, IXP425_EXP_BUS_SIZE, IXP425_EXP_BUS_CS3_VBASE }, { IXP425_EXP_BUS_CS4_HWBASE, IXP425_EXP_BUS_SIZE, IXP425_EXP_BUS_CS4_VBASE }, }; int getvbase(uint32_t hwbase, uint32_t size, uint32_t *vbase) { int i; for (i = 0; i < sizeof hwvtrans / sizeof *hwvtrans; i++) { if (hwbase >= hwvtrans[i].hwbase && hwbase + size <= hwvtrans[i].hwbase + hwvtrans[i].size) { *vbase = hwbase - hwvtrans[i].hwbase + hwvtrans[i].vbase; return (0); } } return (ENOENT); } struct arm32_dma_range * bus_dma_get_range(void) { return (NULL); } int bus_dma_get_range_nb(void) { return (0); } static __inline u_int32_t ixp425_irq2gpio_bit(int irq) { static const uint8_t int2gpio[32] __attribute__ ((aligned(32))) = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* INT#0 -> INT#5 */ 0x00, 0x01, /* GPIO#0 -> GPIO#1 */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* INT#8 -> INT#13 */ 0xff, 0xff, 0xff, 0xff, 0xff, /* INT#14 -> INT#18 */ 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* GPIO#2 -> GPIO#7 */ 0x08, 0x09, 0x0a, 0x0b, 0x0c, /* GPIO#8 -> GPIO#12 */ 0xff, 0xff /* INT#30 -> INT#31 */ }; return (1U << int2gpio[irq]); } void arm_mask_irq(uintptr_t nb) { intr_enabled &= ~(1 << nb); ixp425_set_intrmask(); /*XXX; If it's a GPIO interrupt, ACK it know. Can it be a problem ?*/ if ((1 << nb) & IXP425_INT_GPIOMASK) IXPREG(IXP425_GPIO_VBASE + IXP425_GPIO_GPISR) = ixp425_irq2gpio_bit(nb); } void arm_unmask_irq(uintptr_t nb) { intr_enabled |= (1 << nb); ixp425_set_intrmask(); } static __inline uint32_t ixp425_irq_read(void) { return IXPREG(IXP425_INT_STATUS) & intr_enabled; } int arm_get_next_irq(void) { int irq; if ((irq = ixp425_irq_read())) return (ffs(irq) - 1); return (-1); } void cpu_reset(void) { bus_space_write_4(&ixp425_bs_tag, IXP425_TIMER_VBASE, IXP425_OST_WDOG_KEY, OST_WDOG_KEY_MAJICK); bus_space_write_4(&ixp425_bs_tag, IXP425_TIMER_VBASE, IXP425_OST_WDOG, 0); bus_space_write_4(&ixp425_bs_tag, IXP425_TIMER_VBASE, IXP425_OST_WDOG_ENAB, OST_WDOG_ENAB_RST_ENA | OST_WDOG_ENAB_CNT_ENA); printf("Reset failed!\n"); for(;;); } static void ixp425_identify(driver_t *driver, device_t parent) { BUS_ADD_CHILD(parent, 0, "ixp", 0); } static int ixp425_probe(device_t dev) { device_set_desc(dev, "Intel IXP425"); return (0); } static int ixp425_attach(device_t dev) { struct ixp425_softc *sc; sc = device_get_softc(dev); sc->sc_iot = &ixp425_bs_tag; KASSERT(ixp425_softc == NULL, ("ixp425_attach called twice?")); ixp425_softc = sc; intr_enabled = 0; ixp425_set_intrmask(); ixp425_set_intrsteer(); if (bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 0xffffffff, 0xff, 0xffffffff, 0, NULL, NULL, &sc->sc_dmat)) panic("couldn't create the IXP425 dma tag !"); sc->sc_irq_rman.rm_type = RMAN_ARRAY; sc->sc_irq_rman.rm_descr = "IXP425 IRQs"; if (rman_init(&sc->sc_irq_rman) != 0 || rman_manage_region(&sc->sc_irq_rman, 0, 31) != 0) panic("ixp425_attach: failed to set up IRQ rman"); sc->sc_mem_rman.rm_type = RMAN_ARRAY; sc->sc_mem_rman.rm_descr = "IXP425 Memory"; if (rman_init(&sc->sc_mem_rman) != 0 || rman_manage_region(&sc->sc_mem_rman, 0, ~0) != 0) panic("ixp425_attach: failed to set up memory rman"); BUS_ADD_CHILD(dev, 0, "pcib", 0); BUS_ADD_CHILD(dev, 0, "ixpclk", 0); BUS_ADD_CHILD(dev, 0, "ixpiic", 0); /* XXX move to hints? */ BUS_ADD_CHILD(dev, 0, "ixpwdog", 0); /* attach wired devices via hints */ bus_enumerate_hinted_children(dev); if (bus_space_map(sc->sc_iot, IXP425_GPIO_HWBASE, IXP425_GPIO_SIZE, 0, &sc->sc_gpio_ioh)) panic("ixp425_attach: unable to map GPIO registers"); if (bus_space_map(sc->sc_iot, IXP425_EXP_HWBASE, IXP425_EXP_SIZE, 0, &sc->sc_exp_ioh)) panic("ixp425_attach: unable to map Expansion Bus registers"); bus_generic_probe(dev); bus_generic_attach(dev); return (0); } static void ixp425_hinted_child(device_t bus, const char *dname, int dunit) { device_t child; struct ixp425_ivar *ivar; child = BUS_ADD_CHILD(bus, 0, dname, dunit); ivar = IXP425_IVAR(child); resource_int_value(dname, dunit, "addr", &ivar->addr); resource_int_value(dname, dunit, "irq", &ivar->irq); } static device_t ixp425_add_child(device_t dev, int order, const char *name, int unit) { device_t child; struct ixp425_ivar *ivar; child = device_add_child_ordered(dev, order, name, unit); if (child == NULL) return NULL; ivar = malloc(sizeof(struct ixp425_ivar), M_DEVBUF, M_NOWAIT); if (ivar == NULL) { device_delete_child(dev, child); return NULL; } ivar->addr = 0; ivar->irq = -1; device_set_ivars(child, ivar); return child; } static int ixp425_read_ivar(device_t bus, device_t child, int which, u_char *result) { struct ixp425_ivar *ivar = IXP425_IVAR(child); switch (which) { case IXP425_IVAR_ADDR: if (ivar->addr != 0) { *(uint32_t *)result = ivar->addr; return 0; } break; case IXP425_IVAR_IRQ: if (ivar->irq != -1) { *(int *)result = ivar->irq; return 0; } break; } return EINVAL; } static struct resource * ixp425_alloc_resource(device_t dev, device_t child, int type, int *rid, u_long start, u_long end, u_long count, u_int flags) { struct ixp425_softc *sc = device_get_softc(dev); struct rman *rmanp; struct resource *rv; uint32_t vbase, addr; int irq; switch (type) { case SYS_RES_IRQ: rmanp = &sc->sc_irq_rman; /* override per hints */ if (BUS_READ_IVAR(dev, child, IXP425_IVAR_IRQ, &irq) == 0) start = end = irq; rv = rman_reserve_resource(rmanp, start, end, count, flags, child); if (rv != NULL) rman_set_rid(rv, *rid); break; case SYS_RES_MEMORY: rmanp = &sc->sc_mem_rman; /* override per hints */ if (BUS_READ_IVAR(dev, child, IXP425_IVAR_ADDR, &addr) == 0) { start = addr; end = start + 0x1000; /* XXX */ } if (getvbase(start, end - start, &vbase)) return NULL; rv = rman_reserve_resource(rmanp, start, end, count, flags, child); if (rv != NULL) { rman_set_rid(rv, *rid); if (strcmp(device_get_name(child), "uart") == 0) rman_set_bustag(rv, &ixp425_a4x_bs_tag); else rman_set_bustag(rv, sc->sc_iot); rman_set_bushandle(rv, vbase); } break; default: rv = NULL; break; } return rv; } static int ixp425_setup_intr(device_t dev, device_t child, struct resource *ires, int flags, driver_filter_t *filt, driver_intr_t *intr, void *arg, void **cookiep) { uint32_t mask; int i; BUS_SETUP_INTR(device_get_parent(dev), child, ires, flags, filt, intr, arg, cookiep); mask = 0; for (i = rman_get_start(ires); i <= rman_get_end(ires); i++) mask |= 1 << i; intr_enabled |= mask; ixp425_set_intrmask(); return (0); } static int ixp425_teardown_intr(device_t dev, device_t child, struct resource *res, void *cookie) { uint32_t mask; int i; mask = 0; for (i = rman_get_start(res); i <= rman_get_end(res); i++) mask |= 1 << i; intr_enabled &= ~mask; ixp425_set_intrmask(); return (BUS_TEARDOWN_INTR(device_get_parent(dev), child, res, cookie)); } static device_method_t ixp425_methods[] = { /* Device interface */ DEVMETHOD(device_probe, ixp425_probe), DEVMETHOD(device_attach, ixp425_attach), DEVMETHOD(device_identify, ixp425_identify), /* Bus interface */ DEVMETHOD(bus_add_child, ixp425_add_child), DEVMETHOD(bus_hinted_child, ixp425_hinted_child), DEVMETHOD(bus_read_ivar, ixp425_read_ivar), DEVMETHOD(bus_alloc_resource, ixp425_alloc_resource), DEVMETHOD(bus_setup_intr, ixp425_setup_intr), DEVMETHOD(bus_teardown_intr, ixp425_teardown_intr), {0, 0}, }; static driver_t ixp425_driver = { "ixp", ixp425_methods, sizeof(struct ixp425_softc), }; static devclass_t ixp425_devclass; DRIVER_MODULE(ixp, nexus, ixp425_driver, ixp425_devclass, 0, 0);