/* $NetBSD: acafh.c,v 1.3 2013/12/26 20:38:11 rkujawa Exp $ */ /*- * Copyright (c) 2013 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Radoslaw Kujawa. * * 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 THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``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 THE FOUNDATION OR CONTRIBUTORS * 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 __KERNEL_RCSID(0, "$NetBSD: acafh.c,v 1.3 2013/12/26 20:38:11 rkujawa Exp $"); /* * Individual Computers ACA500 driver. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include int acafh_match(device_t, cfdata_t , void *); void acafh_attach(device_t, device_t, void *); static int acafh_print(void *, const char *); static uint8_t acafh_reg_read(struct acafh_softc *, uint8_t); static uint8_t acafh_revision(struct acafh_softc *); CFATTACH_DECL_NEW(acafh, sizeof(struct acafh_softc), acafh_match, acafh_attach, NULL, NULL); /* * Since ACA500 is not an AutoConfig board and current amiga port infrastructure * does not have typical obio attachment, we need to hack in the probe procedure * into mbattach(). This is supposed to be a temporary solution. */ bool acafh_mbattach_probe(void) { vaddr_t aca_rom_vbase; struct bus_space_tag aca_rom_bst; bus_space_tag_t aca_rom_t; bus_space_handle_t aca_rom_h; uint32_t aca_id; bool rv; rv = false; #ifdef ACAFH_DEBUG aprint_normal("acafh: probing for ACA500\n"); #endif /* ACAFH_DEBUG */ /* * Allocate VA to hold one mapped page, which we will use * to access the beginning of ACA500 flash. */ aca_rom_vbase = uvm_km_alloc(kernel_map, PAGE_SIZE, 0, UVM_KMF_VAONLY | UVM_KMF_NOWAIT); /* Create the physical to virtual mapping. */ pmap_enter(vm_map_pmap(kernel_map), aca_rom_vbase, ACAFH_ROM_BASE, VM_PROT_READ, PMAP_NOCACHE); pmap_update(vm_map_pmap(kernel_map)); aca_rom_bst.base = (bus_addr_t) aca_rom_vbase; aca_rom_bst.absm = &amiga_bus_stride_1; aca_rom_t = &aca_rom_bst; bus_space_map(aca_rom_t, 0, PAGE_SIZE, 0, &aca_rom_h); /* Read out the ID. */ aca_id = bus_space_read_4(aca_rom_t, aca_rom_h, ACAFH_ROM_ID_OFFSET); #ifdef ACAFH_DEBUG aprint_normal("acafh: probe read %x from ACA ROM offset %x\n", aca_id, ACAFH_ROM_ID_OFFSET); #endif /* ACAFH_DEBUG */ if (aca_id == ACAFH_ROM_ID_VALUE) rv = true; else rv = false; #ifdef ACAFH_DEBUG aprint_normal("acafh: clean up after probe\n"); #endif /* ACAFH_DEBUG */ pmap_remove(vm_map_pmap(kernel_map), aca_rom_vbase, aca_rom_vbase + PAGE_SIZE); pmap_update(vm_map_pmap(kernel_map)); uvm_km_free(kernel_map, aca_rom_vbase, PAGE_SIZE, UVM_KMF_VAONLY | UVM_KMF_NOWAIT); return rv; } int acafh_match(device_t parent, cfdata_t cf, void *aux) { if (matchname(aux, "acafh") == 0) return(0); return(1); } void acafh_attach(device_t parent, device_t self, void *aux) { struct acafh_softc *sc; vaddr_t aca_vbase; int i; struct acafhbus_attach_args aaa_wdc; struct acafhbus_attach_args aaa_cp; sc = device_private(self); sc->sc_dev = self; /* * Allocate enough kernel memory. * XXX: we should be sure to prepare enough kva during early init... */ aca_vbase = uvm_km_alloc(kernel_map, ACAFH_END - ACAFH_BASE, 0, UVM_KMF_VAONLY | UVM_KMF_NOWAIT); if (aca_vbase == 0) { aprint_error_dev(sc->sc_dev, "failed allocating virtual memory\n"); return; } /* * Map the ACA500 registers into kernel virutal space. */ for (i = ACAFH_BASE; i < ACAFH_END; i += PAGE_SIZE) pmap_enter(vm_map_pmap(kernel_map), i - ACAFH_BASE + aca_vbase, i, VM_PROT_READ | VM_PROT_WRITE, true); pmap_update(vm_map_pmap(kernel_map)); aca_vbase += ACAFH_FIRST_REG_OFF; sc->sc_aca_bst.base = (bus_addr_t) aca_vbase; sc->sc_aca_bst.absm = &amiga_bus_stride_1; /* sc->sc_aca_bst.absm = &amiga_bus_stride_0x4000; */ sc->sc_aca_iot = &sc->sc_aca_bst; bus_space_map(sc->sc_aca_iot, 0, 0xF, 0, &sc->sc_aca_ioh); #ifdef ACAFH_DEBUG aprint_normal_dev(sc->sc_dev, "ACA500 registers mapped to pa %x (va %x)\n", kvtop((void*)sc->sc_aca_ioh), sc->sc_aca_bst.base); aprint_normal_dev(sc->sc_dev, "AUX intr enable %x\n", acafh_reg_read(sc, ACAFH_MEMPROBE_AUXIRQ)); #endif /* ACAFH_DEBUG */ aprint_normal(": Individual Computers ACA500 (rev %x)\n", acafh_revision(sc)); aprint_normal_dev(sc->sc_dev, "CF cards present: "); if (acafh_reg_read(sc, ACAFH_CF_DETECT_BOOT)) { aprint_normal("BOOT "); } if (acafh_reg_read(sc, ACAFH_CF_DETECT_AUX)) { aprint_normal("AUX "); } aprint_normal("\n"); aaa_wdc.aaa_pbase = (bus_addr_t) GAYLE_IDE_BASE + 2; strcpy(aaa_wdc.aaa_name, "wdc_acafh"); config_found_ia(sc->sc_dev, "acafhbus", &aaa_wdc, acafh_print); aaa_cp.aaa_pbase = (bus_addr_t) ACAFH_CLOCKPORT_BASE; strcpy(aaa_cp.aaa_name, "gencp_acafh"); config_found_ia(sc->sc_dev, "acafhbus", &aaa_cp, acafh_print); } uint8_t acafh_cf_intr_status(struct acafh_softc *sc, uint8_t slot) { uint8_t status; if (slot == 0) { status = acafh_reg_read(sc, ACAFH_CF_IRQ_BOOT); } else { status = acafh_reg_read(sc, ACAFH_CF_IRQ_AUX); } return status; } static uint8_t acafh_revision(struct acafh_softc *sc) { uint8_t revbit0, revbit1, revbit2, revbit3; revbit3 = acafh_reg_read(sc, ACAFH_VERSION_BIT3); revbit2 = acafh_reg_read(sc, ACAFH_VERSION_BIT2); revbit1 = acafh_reg_read(sc, ACAFH_VERSION_BIT1); revbit0 = acafh_reg_read(sc, ACAFH_VERSION_BIT0); return revbit0 | (revbit1 << 1) | (revbit2 << 2) | (revbit3 << 3); } static uint8_t acafh_reg_read(struct acafh_softc *sc, uint8_t reg) { uint16_t val; val = bus_space_read_2(sc->sc_aca_iot, sc->sc_aca_ioh, reg * 0x4000); #ifdef ACAFH_DEBUG aprint_normal_dev(sc->sc_dev, "read out reg %x from %lx (%x), val %x\n", reg, sc->sc_aca_ioh + reg, (bus_addr_t) kvtop((void*) ((unsigned) sc->sc_aca_ioh + reg * 0x4000)), val); #endif /* ACAFH_DEBUG */ return (val & ACAFH_MSB_MASK) >> ACAFH_MSB_SHIFT; } static int acafh_print(void *aux, const char *w) { if (w == NULL) return 0; return 0; }