em4k.c revision 1.1
1 /* $NetBSD: em4k.c,v 1.1 2013/01/29 00:49:42 rkujawa 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 /* Elbox Mediator PCI 4000 driver. */ 33 34 #include <sys/types.h> 35 #include <sys/param.h> 36 #include <sys/time.h> 37 #include <sys/systm.h> 38 #include <sys/errno.h> 39 #include <sys/device.h> 40 #include <sys/malloc.h> 41 #include <sys/extent.h> 42 #include <sys/kmem.h> 43 44 #include <uvm/uvm_extern.h> 45 46 #include <machine/bus.h> 47 #include <machine/cpu.h> 48 49 #include <amiga/dev/zbusvar.h> 50 #include <amiga/pci/empbreg.h> 51 #include <amiga/pci/em4kvar.h> 52 #include <amiga/pci/emmemvar.h> 53 54 #include <dev/pci/pciconf.h> 55 56 #include "opt_pci.h" 57 58 static int em4k_match(device_t, cfdata_t, void *); 59 static void em4k_attach(device_t, device_t, void *); 60 static void em4k_callback(device_t); 61 62 static void em4k_find_mem(struct em4k_softc *); 63 static void em4k_intr_enable(struct em4k_softc *); 64 65 pcireg_t em4k_pci_conf_read(pci_chipset_tag_t, pcitag_t, int); 66 void em4k_pci_conf_write(pci_chipset_tag_t, pcitag_t, int, pcireg_t); 67 int em4k_pci_bus_maxdevs(pci_chipset_tag_t, int); 68 void em4k_pci_attach_hook(device_t, device_t, 69 struct pcibus_attach_args *); 70 pcitag_t em4k_pci_make_tag(pci_chipset_tag_t, int, int, int); 71 void em4k_pci_decompose_tag(pci_chipset_tag_t, pcitag_t, 72 int *, int *, int *); 73 int em4k_pci_intr_map(const struct pci_attach_args *, 74 pci_intr_handle_t *); 75 const struct evcnt * em4k_pci_intr_evcnt(pci_chipset_tag_t, 76 pci_intr_handle_t); 77 int em4k_pci_conf_hook(pci_chipset_tag_t, int, int, int, pcireg_t); 78 79 CFATTACH_DECL_NEW(em4k, sizeof(struct em4k_softc), 80 em4k_match, em4k_attach, NULL, NULL); 81 82 static int 83 em4k_match(device_t parent, cfdata_t cf, void *aux) 84 { 85 struct zbus_args *zap; 86 87 zap = aux; 88 89 if (zap->manid != ZORRO_MANID_ELBOX) 90 return 0; 91 92 switch (zap->prodid) { 93 case ZORRO_PRODID_MED4K: 94 case ZORRO_PRODID_MED4KMKII: 95 return 1; 96 } 97 98 return 0; 99 } 100 101 102 static void 103 em4k_attach(device_t parent, device_t self, void *aux) 104 { 105 struct em4k_softc *sc; 106 struct zbus_args *zap; 107 108 volatile char *ba; 109 110 zap = aux; 111 sc = device_private(self); 112 sc->sc_dev = self; 113 ba = zap->va; 114 115 sc->model = zap->prodid; 116 117 switch (sc->model) { 118 case ZORRO_PRODID_MED4K: 119 aprint_normal(": ELBOX Mediator PCI 4000\n"); 120 break; 121 case ZORRO_PRODID_MED4KMKII: 122 aprint_normal(": ELBOX Mediator PCI 4000 MK-II\n"); 123 break; 124 default: 125 aprint_normal(": ELBOX Mediator PCI (unknown)\n"); 126 break; 127 } 128 129 /* Setup bus space mappings. */ 130 sc->pci_conf_area.base = (bus_addr_t) ba + EM4K_CONF_OFF; 131 sc->pci_conf_area.absm = &amiga_bus_stride_1swap; 132 133 sc->pci_io_area.base = (bus_addr_t) ba + EM4K_IO_OFF; 134 sc->pci_io_area.absm = &amiga_bus_stride_1swap; 135 136 sc->setup_area.base = (bus_addr_t) ba + EM4K_SETUP_OFF; 137 sc->setup_area.absm = &amiga_bus_stride_1; 138 139 /* 140 * Defer everything until later, we need to wait for possible 141 * emmem attachments. 142 */ 143 144 config_defer(self, em4k_callback); 145 } 146 147 static void 148 em4k_callback(device_t self) { 149 150 struct em4k_softc *sc; 151 pci_chipset_tag_t pc; 152 struct pcibus_attach_args pba; 153 #ifdef PCI_NETBSD_CONFIGURE 154 /* struct extent *ioext, *memext; */ 155 #endif /* PCI_NETBSD_CONFIGURE */ 156 157 sc = device_private(self); 158 pc = &sc->apc; 159 160 #ifdef EM4K_DEBUG 161 aprint_normal("em4k: mapped setup %x->%x, conf %x->%x, io %x->%x\n", 162 kvtop((void*) sc->setup_area.base), sc->setup_area.base, 163 kvtop((void*) sc->pci_conf_area.base), sc->pci_conf_area.base, 164 kvtop((void*) sc->pci_io_area.base), sc->pci_io_area.base); 165 #endif 166 167 sc->pci_conf_t = &(sc->pci_conf_area); 168 sc->pci_io_t = &(sc->pci_io_area); 169 170 if (bus_space_map(sc->pci_conf_t, 0, EM4K_CONF_SIZE, 0, 171 &sc->pci_conf_h)) 172 aprint_error_dev(self, "couldn't map PCI config space\n"); 173 174 if (bus_space_map(sc->pci_io_t, 0, EM4K_IO_SIZE, 0, 175 &sc->pci_io_h)) 176 aprint_error_dev(self, "couldn't map PCI I/O space\n"); 177 178 sc->apc.pci_conf_datat = sc->pci_conf_t; 179 sc->apc.pci_conf_datah = sc->pci_conf_h; 180 181 sc->setup_area_t = &(sc->setup_area); 182 183 if (bus_space_map(sc->setup_area_t, 0, EM4K_SETUP_SIZE, 0, 184 &sc->setup_area_h)) 185 aprint_error_dev(self, 186 "couldn't map Mediator setup space\n"); 187 188 em4k_find_mem(sc); 189 if (sc->pci_mem_win_size == 0) 190 aprint_error_dev(self, 191 "couldn't find memory space, this shouldn't happen!\n"); 192 193 /* Initialize the PCI chipset tag. */ 194 sc->apc.pc_conf_v = (void*) pc; 195 sc->apc.pc_bus_maxdevs = em4k_pci_bus_maxdevs; 196 sc->apc.pc_make_tag = amiga_pci_make_tag; 197 sc->apc.pc_decompose_tag = amiga_pci_decompose_tag; 198 sc->apc.pc_conf_read = em4k_pci_conf_read; 199 sc->apc.pc_conf_write = em4k_pci_conf_write; 200 sc->apc.pc_attach_hook = em4k_pci_attach_hook; 201 202 sc->apc.pc_intr_map = em4k_pci_intr_map; 203 sc->apc.pc_intr_string = amiga_pci_intr_string; 204 sc->apc.pc_intr_establish = amiga_pci_intr_establish; 205 sc->apc.pc_intr_disestablish = amiga_pci_intr_disestablish; 206 207 sc->apc.pc_conf_hook = em4k_pci_conf_hook; 208 sc->apc.pc_conf_interrupt = amiga_pci_conf_interrupt; 209 210 sc->apc.cookie = sc; 211 212 #ifdef PCI_NETBSD_CONFIGURE 213 /* XXX: not yet 214 ioext = extent_create("em4kio", 0, EMPB_BRIDGE_SIZE, 215 NULL, 0, EX_NOWAIT); 216 217 memext = extent_create("em4kmem", EMPB_MEM_BASE, EMPB_MEM_END, 218 NULL, 0, EX_NOWAIT); 219 220 pci_configure_bus(pc, ioext, memext, NULL, 0, CACHELINE_SIZE); 221 222 extent_destroy(ioext); 223 extent_destroy(memext); 224 */ 225 226 #endif /* PCI_NETBSD_CONFIGURE */ 227 228 pba.pba_iot = &(sc->pci_io_area); 229 pba.pba_dmat = NULL; 230 pba.pba_dmat64 = NULL; 231 pba.pba_pc = pc; 232 pba.pba_flags = PCI_FLAGS_IO_OKAY; 233 234 if (sc->pci_mem_win_size > 0) { 235 pba.pba_memt = &(sc->pci_mem_win); 236 pba.pba_flags |= PCI_FLAGS_MEM_OKAY; 237 } else 238 pba.pba_memt = NULL; 239 240 pba.pba_bus = 0; 241 pba.pba_bridgetag = NULL; 242 243 /* XXX: set correct window pos */ 244 /*bus_space_write_2(sc->setup_area_t, sc->setup_area_h, 245 EMPB_SETUP_WINDOW_OFF, XXX);*/ 246 247 em4k_intr_enable(sc); 248 249 config_found_ia(self, "pcibus", &pba, pcibusprint); 250 } 251 252 static void 253 em4k_intr_enable(struct em4k_softc *sc) 254 { 255 bus_space_write_1(sc->setup_area_t, sc->setup_area_h, 256 EM4K_SETUP_INTR_OFF, EMPB_INTR_ENABLE); 257 } 258 259 /* 260 * Try to find a (optional) memory window board. 261 */ 262 static void 263 em4k_find_mem(struct em4k_softc *sc) 264 { 265 device_t memdev; 266 struct emmem_softc *mem_sc; 267 268 memdev = device_find_by_xname("emmem0"); 269 sc->pci_mem_win_size = 0; 270 271 if (memdev == NULL) { 272 return; 273 } 274 275 mem_sc = device_private(memdev); 276 277 sc->pci_mem_win.base = (bus_addr_t) mem_sc->sc_base; 278 sc->pci_mem_win.absm = &amiga_bus_stride_1swap_abs; 279 sc->pci_mem_win_size = mem_sc->sc_size; 280 sc->pci_mem_win_t = &sc->pci_mem_win; 281 282 if (sc->pci_mem_win_size == 512*1024*1024) 283 sc->pci_mem_win_mask = EM4K_WINDOW_MASK_512M; 284 else if (sc->pci_mem_win_size == 256*1024*1024) 285 sc->pci_mem_win_mask = EM4K_WINDOW_MASK_256M; 286 else /* disable anyway */ 287 sc->pci_mem_win_size = 0; 288 289 #ifdef EM4K_DEBUG 290 aprint_normal("em4k: found %x b window at %p, switch mask %x\n", 291 sc->pci_mem_win_size, (void*) sc->pci_mem_win.base, 292 sc->pci_mem_win_mask); 293 #endif /* EM4K_DEBUG */ 294 295 } 296 297 pcireg_t 298 em4k_pci_conf_read(pci_chipset_tag_t pc, pcitag_t tag, int reg) 299 { 300 uint32_t data; 301 uint32_t bus, dev, func; 302 struct em4k_softc *sc; 303 304 sc = pc->cookie; 305 306 pci_decompose_tag(pc, tag, &bus, &dev, &func); 307 308 data = bus_space_read_4(pc->pci_conf_datat, pc->pci_conf_datah, 309 EMPB_CONF_DEV_STRIDE*dev + EMPB_CONF_FUNC_STRIDE*func + reg); 310 #ifdef EM4K_DEBUG_CONF 311 aprint_normal("em4k conf read va: %lx, bus: %d, dev: %d, " 312 "func: %d, reg: %d -r-> data %x\n", 313 pc->pci_conf_datah, bus, dev, func, reg, data); 314 #endif /* EM4K_DEBUG_CONF */ 315 316 return data; 317 } 318 319 void 320 em4k_pci_conf_write(pci_chipset_tag_t pc, pcitag_t tag, int reg, pcireg_t val) 321 { 322 uint32_t bus, dev, func; 323 struct em4k_softc *sc; 324 325 sc = pc->cookie; 326 327 pci_decompose_tag(pc, tag, &bus, &dev, &func); 328 329 bus_space_write_4(pc->pci_conf_datat, pc->pci_conf_datah, 330 EMPB_CONF_DEV_STRIDE*dev + EMPB_CONF_FUNC_STRIDE*func + reg, val); 331 #ifdef EM4K_DEBUG_CONF 332 aprint_normal("em4k conf write va: %lx, bus: %d, dev: %d, " 333 "func: %d, reg: %d -w-> data %x\n", 334 pc->pci_conf_datah, bus, dev, func, reg, val); 335 #endif /* EM4K_DEBUG_CONF */ 336 } 337 338 int 339 em4k_pci_bus_maxdevs(pci_chipset_tag_t pc, int busno) 340 { 341 return 6; /* no Mediator with more than 6 slots? */ 342 } 343 344 void 345 em4k_pci_attach_hook(device_t parent, device_t self, 346 struct pcibus_attach_args *pba) 347 { 348 } 349 350 int 351 em4k_pci_intr_map(const struct pci_attach_args *pa, pci_intr_handle_t *ihp) 352 { 353 /* TODO: add sanity checking */ 354 355 *ihp = EMPB_INT; 356 return 0; 357 } 358 359 const struct evcnt * 360 em4k_pci_intr_evcnt(pci_chipset_tag_t pc, pci_intr_handle_t ih) 361 { 362 /* TODO: implement */ 363 return NULL; 364 } 365 366 int 367 em4k_pci_conf_hook(pci_chipset_tag_t pct, int bus, int dev, int func, 368 pcireg_t id) 369 { 370 return PCI_CONF_DEFAULT; 371 } 372
Indexes created Thu Oct 02 14:10:14 GMT 2025