1 /* $NetBSD: acafh.c,v 1.7 2023/12/20 00:40:42 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 2013 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Radoslaw Kujawa. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: acafh.c,v 1.7 2023/12/20 00:40:42 thorpej Exp $"); 34 35 /* 36 * Individual Computers ACA500 driver. 37 */ 38 39 #include <sys/param.h> 40 #include <sys/device.h> 41 #include <sys/socket.h> 42 #include <sys/systm.h> 43 #include <sys/bus.h> 44 #include <sys/types.h> 45 46 #include <uvm/uvm.h> 47 48 #include <machine/cpu.h> 49 50 #include <amiga/amiga/device.h> 51 #include <amiga/amiga/isr.h> 52 53 #include <amiga/dev/zbusvar.h> 54 #include <amiga/dev/acafhvar.h> 55 #include <amiga/dev/acafhreg.h> 56 57 int acafh_match(device_t, cfdata_t , void *); 58 void acafh_attach(device_t, device_t, void *); 59 static int acafh_print(void *, const char *); 60 static uint8_t acafh_reg_read(struct acafh_softc *, uint8_t); 61 static uint8_t acafh_revision(struct acafh_softc *); 62 63 CFATTACH_DECL_NEW(acafh, sizeof(struct acafh_softc), 64 acafh_match, acafh_attach, NULL, NULL); 65 66 /* 67 * Since ACA500 is not an AutoConfig board and current amiga port infrastructure 68 * does not have typical obio attachment, we need to hack in the probe procedure 69 * into mbattach(). This is supposed to be a temporary solution. 70 */ 71 bool 72 acafh_mbattach_probe(void) 73 { 74 vaddr_t aca_rom_vbase; 75 struct bus_space_tag aca_rom_bst; 76 bus_space_tag_t aca_rom_t; 77 bus_space_handle_t aca_rom_h; 78 uint32_t aca_id; 79 bool rv; 80 81 rv = false; 82 83 #ifdef ACAFH_DEBUG 84 aprint_normal("acafh: probing for ACA500\n"); 85 #endif /* ACAFH_DEBUG */ 86 87 /* 88 * Allocate VA to hold one mapped page, which we will use 89 * to access the beginning of ACA500 flash. 90 */ 91 aca_rom_vbase = uvm_km_alloc(kernel_map, 92 PAGE_SIZE, 0, UVM_KMF_VAONLY | UVM_KMF_NOWAIT); 93 94 /* Create the physical to virtual mapping. */ 95 pmap_enter(vm_map_pmap(kernel_map), aca_rom_vbase, ACAFH_ROM_BASE, 96 VM_PROT_READ, PMAP_NOCACHE); 97 pmap_update(vm_map_pmap(kernel_map)); 98 99 aca_rom_bst.base = (bus_addr_t) aca_rom_vbase; 100 aca_rom_bst.absm = &amiga_bus_stride_1; 101 aca_rom_t = &aca_rom_bst; 102 bus_space_map(aca_rom_t, 0, PAGE_SIZE, 0, &aca_rom_h); 103 104 /* Read out the ID. */ 105 aca_id = bus_space_read_4(aca_rom_t, aca_rom_h, ACAFH_ROM_ID_OFFSET); 106 #ifdef ACAFH_DEBUG 107 aprint_normal("acafh: probe read %x from ACA ROM offset %x\n", aca_id, 108 ACAFH_ROM_ID_OFFSET); 109 #endif /* ACAFH_DEBUG */ 110 111 if (aca_id == ACAFH_ROM_ID_VALUE) 112 rv = true; 113 else 114 rv = false; 115 116 #ifdef ACAFH_DEBUG 117 aprint_normal("acafh: clean up after probe\n"); 118 #endif /* ACAFH_DEBUG */ 119 120 pmap_remove(vm_map_pmap(kernel_map), aca_rom_vbase, aca_rom_vbase + PAGE_SIZE); 121 pmap_update(vm_map_pmap(kernel_map)); 122 123 uvm_km_free(kernel_map, aca_rom_vbase, PAGE_SIZE, 124 UVM_KMF_VAONLY | UVM_KMF_NOWAIT); 125 126 return rv; 127 } 128 129 int 130 acafh_match(device_t parent, cfdata_t cf, void *aux) 131 { 132 if (matchname(aux, "acafh") == 0) 133 return(0); 134 return(1); 135 } 136 137 void 138 acafh_attach(device_t parent, device_t self, void *aux) 139 { 140 struct acafh_softc *sc; 141 vaddr_t aca_vbase; 142 int i; 143 struct acafhbus_attach_args aaa_wdc; 144 struct acafhbus_attach_args aaa_cp; 145 146 sc = device_private(self); 147 sc->sc_dev = self; 148 149 /* 150 * Allocate enough kernel memory. 151 * XXX: we should be sure to prepare enough kva during early init... 152 */ 153 aca_vbase = uvm_km_alloc(kernel_map, 154 ACAFH_END - ACAFH_BASE, 0, UVM_KMF_VAONLY | UVM_KMF_NOWAIT); 155 156 if (aca_vbase == 0) { 157 aprint_error_dev(sc->sc_dev, 158 "failed allocating virtual memory\n"); 159 return; 160 } 161 162 /* 163 * Map the ACA500 registers into kernel virutal space. 164 */ 165 for (i = ACAFH_BASE; i < ACAFH_END; i += PAGE_SIZE) 166 pmap_enter(vm_map_pmap(kernel_map), 167 i - ACAFH_BASE + aca_vbase, i, 168 VM_PROT_READ | VM_PROT_WRITE, true); 169 pmap_update(vm_map_pmap(kernel_map)); 170 171 aca_vbase += ACAFH_FIRST_REG_OFF; 172 173 sc->sc_aca_bst.base = (bus_addr_t) aca_vbase; 174 sc->sc_aca_bst.absm = &amiga_bus_stride_1; 175 /* sc->sc_aca_bst.absm = &amiga_bus_stride_0x4000; */ 176 sc->sc_aca_iot = &sc->sc_aca_bst; 177 178 bus_space_map(sc->sc_aca_iot, 0, 0xF, 0, &sc->sc_aca_ioh); 179 180 #ifdef ACAFH_DEBUG 181 aprint_normal_dev(sc->sc_dev, 182 "ACA500 registers mapped to pa %x (va %x)\n", 183 kvtop((void*)sc->sc_aca_ioh), sc->sc_aca_bst.base); 184 aprint_normal_dev(sc->sc_dev, "AUX intr enable %x\n", 185 acafh_reg_read(sc, ACAFH_MEMPROBE_AUXIRQ)); 186 #endif /* ACAFH_DEBUG */ 187 188 aprint_normal(": Individual Computers ACA500 (rev %x)\n", 189 acafh_revision(sc)); 190 191 aprint_normal_dev(sc->sc_dev, "CF cards present: "); 192 if (acafh_reg_read(sc, ACAFH_CF_DETECT_BOOT)) { 193 aprint_normal("BOOT "); 194 } 195 if (acafh_reg_read(sc, ACAFH_CF_DETECT_AUX)) { 196 aprint_normal("AUX "); 197 } 198 aprint_normal("\n"); 199 200 aaa_wdc.aaa_pbase = (bus_addr_t) GAYLE_IDE_BASE + 2; 201 strcpy(aaa_wdc.aaa_name, "wdc_acafh"); 202 config_found(sc->sc_dev, &aaa_wdc, acafh_print, CFARGS_NONE); 203 204 aaa_cp.aaa_pbase = (bus_addr_t) ACAFH_CLOCKPORT_BASE; 205 strcpy(aaa_cp.aaa_name, "gencp_acafh"); 206 config_found(sc->sc_dev, &aaa_cp, acafh_print, CFARGS_NONE); 207 } 208 209 uint8_t 210 acafh_cf_intr_status(struct acafh_softc *sc, uint8_t slot) 211 { 212 uint8_t status; 213 214 if (slot == 0) { 215 status = acafh_reg_read(sc, ACAFH_CF_IRQ_BOOT); 216 } else { 217 status = acafh_reg_read(sc, ACAFH_CF_IRQ_AUX); 218 } 219 220 return status; 221 } 222 223 static uint8_t 224 acafh_revision(struct acafh_softc *sc) 225 { 226 uint8_t revbit0, revbit1, revbit2, revbit3; 227 228 revbit3 = acafh_reg_read(sc, ACAFH_VERSION_BIT3); 229 revbit2 = acafh_reg_read(sc, ACAFH_VERSION_BIT2); 230 revbit1 = acafh_reg_read(sc, ACAFH_VERSION_BIT1); 231 revbit0 = acafh_reg_read(sc, ACAFH_VERSION_BIT0); 232 233 return revbit0 | (revbit1 << 1) | (revbit2 << 2) | (revbit3 << 3); 234 } 235 236 static uint8_t 237 acafh_reg_read(struct acafh_softc *sc, uint8_t reg) 238 { 239 uint16_t val; 240 241 val = bus_space_read_2(sc->sc_aca_iot, sc->sc_aca_ioh, reg * 0x4000); 242 #ifdef ACAFH_DEBUG 243 aprint_normal_dev(sc->sc_dev, "read out reg %x from %lx (%x), val %x\n", 244 reg, sc->sc_aca_ioh + reg, (bus_addr_t) kvtop((void*) 245 ((unsigned) sc->sc_aca_ioh + reg * 0x4000)), val); 246 #endif /* ACAFH_DEBUG */ 247 248 return (val & ACAFH_MSB_MASK) >> ACAFH_MSB_SHIFT; 249 } 250 251 static int 252 acafh_print(void *aux, const char *w) 253 { 254 if (w == NULL) 255 return 0; 256 257 return 0; 258 } 259 260
Indexes created Tue Sep 30 20:09:53 GMT 2025