/* $NetBSD: i80321_mainbus.c,v 1.13 2003/12/17 22:03:24 abs Exp $ */ /*- * Copyright (c) 2001, 2002 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed for the NetBSD Project by * Wasabi Systems, Inc. * 4. The name of Wasabi Systems, Inc. may not be used to endorse * or promote products derived from this software without specific prior * written permission. * * 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. */ /* * IQ80321 front-end for the i80321 I/O Processor. We take care * of setting up the i80321 memory map, PCI interrupt routing, etc., * which are all specific to the board the i80321 is wired up to. */ #include __FBSDID("$FreeBSD$"); #define _ARM32_BUS_DMA_PRIVATE #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include int iq80321_probe(device_t); void iq80321_identify(driver_t *, device_t); int iq80321_attach(device_t); int iq80321_probe(device_t dev) { device_set_desc(dev, "Intel 80321"); return (0); } void iq80321_identify(driver_t *driver, device_t parent) { BUS_ADD_CHILD(parent, 0, "iq", 0); } static struct arm32_dma_range i80321_dr; static int dma_range_init = 0; struct arm32_dma_range * bus_dma_get_range(void) { if (dma_range_init == 0) return (NULL); return (&i80321_dr); } int bus_dma_get_range_nb(void) { if (dma_range_init == 0) return (0); return (1); } #define PCI_MAPREG_MEM_PREFETCHABLE_MASK 0x00000008 #define PCI_MAPREG_MEM_TYPE_64BIT 0x00000004 int iq80321_attach(device_t dev) { struct i80321_softc *sc = device_get_softc(dev); int b0u, b0l, b1u, b1l; vm_paddr_t memstart = 0; vm_size_t memsize = 0; int busno; /* * Fill in the space tag for the i80321's own devices, * and hand-craft the space handle for it (the device * was mapped during early bootstrap). */ i80321_bs_init(&i80321_bs_tag, sc); sc->sc_st = &i80321_bs_tag; sc->sc_sh = IQ80321_80321_VBASE; sc->dev = dev; sc->sc_is_host = 1; /* * Slice off a subregion for the Memory Controller -- we need it * here in order read the memory size. */ if (bus_space_subregion(sc->sc_st, sc->sc_sh, VERDE_MCU_BASE, VERDE_MCU_SIZE, &sc->sc_mcu_sh)) panic("%s: unable to subregion MCU registers", device_get_name(dev)); if (bus_space_subregion(sc->sc_st, sc->sc_sh, VERDE_ATU_BASE, VERDE_ATU_SIZE, &sc->sc_atu_sh)) panic("%s: unable to subregion ATU registers", device_get_name(dev)); /* * We have mapped the the PCI I/O windows in the early * bootstrap phase. */ sc->sc_iow_vaddr = IQ80321_IOW_VBASE; /* * Check the configuration of the ATU to see if another BIOS * has configured us. If a PC BIOS didn't configure us, then: * IQ80321: BAR0 00000000.0000000c BAR1 is 00000000.8000000c. * IQ31244: BAR0 00000000.00000004 BAR1 is 00000000.0000000c. * If a BIOS has configured us, at least one of those should be * different. This is pretty fragile, but it's not clear what * would work better. */ b0l = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, PCIR_BARS+0x0); b0u = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, PCIR_BARS+0x4); b1l = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, PCIR_BARS+0x8); b1u = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, PCIR_BARS+0xc); #define PCI_MAPREG_MEM_ADDR_MASK 0xfffffff0 b0l &= PCI_MAPREG_MEM_ADDR_MASK; b0u &= PCI_MAPREG_MEM_ADDR_MASK; b1l &= PCI_MAPREG_MEM_ADDR_MASK; b1u &= PCI_MAPREG_MEM_ADDR_MASK; if ((b0u != b1u) || (b0l != 0) || ((b1l & ~0x80000000U) != 0)) sc->sc_is_host = 0; else sc->sc_is_host = 1; i80321_sdram_bounds(sc->sc_st, sc->sc_mcu_sh, &memstart, &memsize); /* * We set up the Inbound Windows as follows: * * 0 Access to i80321 PMMRs * * 1 Reserve space for private devices * * 2 RAM access * * 3 Unused. * * This chunk needs to be customized for each IOP321 application. */ #if 0 sc->sc_iwin[0].iwin_base_lo = VERDE_PMMR_BASE; sc->sc_iwin[0].iwin_base_hi = 0; sc->sc_iwin[0].iwin_xlate = VERDE_PMMR_BASE; sc->sc_iwin[0].iwin_size = VERDE_PMMR_SIZE; #endif if (sc->sc_is_host) { /* Map PCI:Local 1:1. */ sc->sc_iwin[1].iwin_base_lo = VERDE_OUT_XLATE_MEM_WIN0_BASE | PCI_MAPREG_MEM_PREFETCHABLE_MASK | PCI_MAPREG_MEM_TYPE_64BIT; sc->sc_iwin[1].iwin_base_hi = 0; } else { sc->sc_iwin[1].iwin_base_lo = 0; sc->sc_iwin[1].iwin_base_hi = 0; } sc->sc_iwin[1].iwin_xlate = VERDE_OUT_XLATE_MEM_WIN0_BASE; sc->sc_iwin[1].iwin_size = VERDE_OUT_XLATE_MEM_WIN_SIZE; if (sc->sc_is_host) { sc->sc_iwin[2].iwin_base_lo = memstart | PCI_MAPREG_MEM_PREFETCHABLE_MASK | PCI_MAPREG_MEM_TYPE_64BIT; sc->sc_iwin[2].iwin_base_hi = 0; } else { sc->sc_iwin[2].iwin_base_lo = 0; sc->sc_iwin[2].iwin_base_hi = 0; } sc->sc_iwin[2].iwin_xlate = memstart; sc->sc_iwin[2].iwin_size = memsize; if (sc->sc_is_host) { sc->sc_iwin[3].iwin_base_lo = 0 | PCI_MAPREG_MEM_PREFETCHABLE_MASK | PCI_MAPREG_MEM_TYPE_64BIT; } else { sc->sc_iwin[3].iwin_base_lo = 0; } sc->sc_iwin[3].iwin_base_hi = 0; sc->sc_iwin[3].iwin_xlate = 0; sc->sc_iwin[3].iwin_size = 0; /* * We set up the Outbound Windows as follows: * * 0 Access to private PCI space. * * 1 Unused. */ #define PCI_MAPREG_MEM_ADDR(x) ((x) & 0xfffffff0) sc->sc_owin[0].owin_xlate_lo = PCI_MAPREG_MEM_ADDR(sc->sc_iwin[1].iwin_base_lo); sc->sc_owin[0].owin_xlate_hi = sc->sc_iwin[1].iwin_base_hi; /* * Set the Secondary Outbound I/O window to map * to PCI address 0 for all 64K of the I/O space. */ sc->sc_ioout_xlate = 0; i80321_attach(sc); i80321_dr.dr_sysbase = sc->sc_iwin[2].iwin_xlate; i80321_dr.dr_busbase = PCI_MAPREG_MEM_ADDR(sc->sc_iwin[2].iwin_base_lo); i80321_dr.dr_len = sc->sc_iwin[2].iwin_size; dma_range_init = 1; busno = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_PCIXSR); busno = PCIXSR_BUSNO(busno); if (busno == 0xff) busno = 0; sc->sc_irq_rman.rm_type = RMAN_ARRAY; sc->sc_irq_rman.rm_descr = "i80321 IRQs"; if (rman_init(&sc->sc_irq_rman) != 0 || rman_manage_region(&sc->sc_irq_rman, 0, 25) != 0) panic("i80321_attach: failed to set up IRQ rman"); device_add_child(dev, "obio", 0); device_add_child(dev, "itimer", 0); device_add_child(dev, "iopwdog", 0); device_add_child(dev, "iqseg", 0); device_add_child(dev, "pcib", busno); device_add_child(dev, "i80321_dma", 0); device_add_child(dev, "i80321_dma", 1); device_add_child(dev, "i80321_aau", 0); bus_generic_probe(dev); bus_generic_attach(dev); return (0); } void arm_mask_irq(uintptr_t nb) { intr_enabled &= ~(1 << nb); i80321_set_intrmask(); } void arm_unmask_irq(uintptr_t nb) { intr_enabled |= (1 << nb); i80321_set_intrmask(); } void cpu_reset() { (void) disable_interrupts(I32_bit|F32_bit); *(__volatile uint32_t *)(IQ80321_80321_VBASE + VERDE_ATU_BASE + ATU_PCSR) = PCSR_RIB | PCSR_RPB; printf("Reset failed :'(\n"); for(;;); } static struct resource * iq80321_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 i80321_softc *sc = device_get_softc(dev); struct resource *rv; if (type == SYS_RES_IRQ) { rv = rman_reserve_resource(&sc->sc_irq_rman, start, end, count, flags, child); if (rv != NULL) rman_set_rid(rv, *rid); return (rv); } return (NULL); } static int iq80321_setup_intr(device_t dev, device_t child, struct resource *ires, int flags, driver_intr_t *intr, void *arg, void **cookiep) { BUS_SETUP_INTR(device_get_parent(dev), child, ires, flags, intr, arg, cookiep); intr_enabled |= 1 << rman_get_start(ires); i80321_set_intrmask(); return (0); } static int iq80321_teardown_intr(device_t dev, device_t child, struct resource *res, void *cookie) { return (BUS_TEARDOWN_INTR(device_get_parent(dev), child, res, cookie)); } static device_method_t iq80321_methods[] = { DEVMETHOD(device_probe, iq80321_probe), DEVMETHOD(device_attach, iq80321_attach), DEVMETHOD(device_identify, iq80321_identify), DEVMETHOD(bus_alloc_resource, iq80321_alloc_resource), DEVMETHOD(bus_setup_intr, iq80321_setup_intr), DEVMETHOD(bus_teardown_intr, iq80321_teardown_intr), {0, 0}, }; static driver_t iq80321_driver = { "iq", iq80321_methods, sizeof(struct i80321_softc), }; static devclass_t iq80321_devclass; DRIVER_MODULE(iq, nexus, iq80321_driver, iq80321_devclass, 0, 0);