em4k.c revision 1.4
1 /* $NetBSD: em4k.c,v 1.4 2015/10/02 05:22:49 msaitoh 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 #ifdef PCI_NETBSD_CONFIGURE 80 static void em4k_pci_configure(struct em4k_softc *sc); 81 #endif /* PCI_NETBSD_CONFIGURE */ 82 83 CFATTACH_DECL_NEW(em4k, sizeof(struct em4k_softc), 84 em4k_match, em4k_attach, NULL, NULL); 85 86 static int 87 em4k_match(device_t parent, cfdata_t cf, void *aux) 88 { 89 struct zbus_args *zap; 90 91 zap = aux; 92 93 if (zap->manid != ZORRO_MANID_ELBOX) 94 return 0; 95 96 switch (zap->prodid) { 97 case ZORRO_PRODID_MED4K: 98 case ZORRO_PRODID_MED4KMKII: 99 return 1; 100 } 101 102 return 0; 103 } 104 105 106 static void 107 em4k_attach(device_t parent, device_t self, void *aux) 108 { 109 struct em4k_softc *sc; 110 struct zbus_args *zap; 111 112 volatile char *ba; 113 114 zap = aux; 115 sc = device_private(self); 116 sc->sc_dev = self; 117 ba = zap->va; 118 119 sc->model = zap->prodid; 120 121 switch (sc->model) { 122 case ZORRO_PRODID_MED4K: 123 aprint_normal(": ELBOX Mediator PCI 4000\n"); 124 break; 125 case ZORRO_PRODID_MED4KMKII: 126 aprint_normal(": ELBOX Mediator PCI 4000 MK-II\n"); 127 break; 128 default: 129 aprint_normal(": ELBOX Mediator PCI (unknown)\n"); 130 break; 131 } 132 133 /* Setup bus space mappings. */ 134 sc->pci_conf_area.base = (bus_addr_t) ba + EM4K_CONF_OFF; 135 sc->pci_conf_area.absm = &amiga_bus_stride_1swap; 136 137 sc->pci_io_area.base = (bus_addr_t) ba + EM4K_IO_OFF; 138 sc->pci_io_area.absm = &amiga_bus_stride_1swap; 139 140 sc->setup_area.base = (bus_addr_t) ba + EM4K_SETUP_OFF; 141 sc->setup_area.absm = &amiga_bus_stride_1; 142 143 /* 144 * Defer everything until later, we need to wait for possible 145 * emmem attachments. 146 */ 147 148 config_defer(self, em4k_callback); 149 } 150 151 static void 152 em4k_callback(device_t self) { 153 154 struct em4k_softc *sc; 155 pci_chipset_tag_t pc; 156 struct pcibus_attach_args pba; 157 158 sc = device_private(self); 159 pc = &sc->apc; 160 161 #ifdef EM4K_DEBUG 162 aprint_normal("em4k: mapped setup %x->%x, conf %x->%x, io %x->%x\n", 163 kvtop((void*) sc->setup_area.base), sc->setup_area.base, 164 kvtop((void*) sc->pci_conf_area.base), sc->pci_conf_area.base, 165 kvtop((void*) sc->pci_io_area.base), sc->pci_io_area.base); 166 #endif 167 168 sc->pci_conf_t = &(sc->pci_conf_area); 169 sc->pci_io_t = &(sc->pci_io_area); 170 171 if (bus_space_map(sc->pci_conf_t, 0, EM4K_CONF_SIZE, 0, 172 &sc->pci_conf_h)) 173 aprint_error_dev(self, "couldn't map PCI config space\n"); 174 175 if (bus_space_map(sc->pci_io_t, 0, EM4K_IO_SIZE, 0, 176 &sc->pci_io_h)) 177 aprint_error_dev(self, "couldn't map PCI I/O space\n"); 178 179 sc->apc.pci_conf_datat = sc->pci_conf_t; 180 sc->apc.pci_conf_datah = sc->pci_conf_h; 181 182 sc->setup_area_t = &(sc->setup_area); 183 184 if (bus_space_map(sc->setup_area_t, 0, EM4K_SETUP_SIZE, 0, 185 &sc->setup_area_h)) 186 aprint_error_dev(self, 187 "couldn't map Mediator setup space\n"); 188 189 em4k_find_mem(sc); 190 if (sc->pci_mem_win_size == 0) 191 aprint_error_dev(self, 192 "couldn't find memory space, this shouldn't happen!\n"); 193 194 /* Initialize the PCI chipset tag. */ 195 sc->apc.pc_conf_v = (void*) pc; 196 sc->apc.pc_bus_maxdevs = em4k_pci_bus_maxdevs; 197 sc->apc.pc_make_tag = amiga_pci_make_tag; 198 sc->apc.pc_decompose_tag = amiga_pci_decompose_tag; 199 sc->apc.pc_conf_read = em4k_pci_conf_read; 200 sc->apc.pc_conf_write = em4k_pci_conf_write; 201 sc->apc.pc_attach_hook = em4k_pci_attach_hook; 202 203 sc->apc.pc_intr_map = em4k_pci_intr_map; 204 sc->apc.pc_intr_string = amiga_pci_intr_string; 205 sc->apc.pc_intr_establish = amiga_pci_intr_establish; 206 sc->apc.pc_intr_disestablish = amiga_pci_intr_disestablish; 207 208 sc->apc.pc_conf_hook = em4k_pci_conf_hook; 209 sc->apc.pc_conf_interrupt = amiga_pci_conf_interrupt; 210 211 sc->apc.cookie = sc; 212 213 #ifdef PCI_NETBSD_CONFIGURE 214 em4k_pci_configure(sc); 215 #endif /* PCI_NETBSD_CONFIGURE */ 216 217 pba.pba_iot = &(sc->pci_io_area); 218 pba.pba_dmat = NULL; 219 pba.pba_dmat64 = NULL; 220 pba.pba_pc = pc; 221 pba.pba_flags = PCI_FLAGS_IO_OKAY; 222 223 if (sc->pci_mem_win_size > 0) { 224 pba.pba_memt = &(sc->pci_mem_win); 225 pba.pba_flags |= PCI_FLAGS_MEM_OKAY; 226 } else 227 pba.pba_memt = NULL; 228 229 pba.pba_bus = 0; 230 pba.pba_bridgetag = NULL; 231 232 /* Set correct window position. */ 233 bus_space_write_1(sc->setup_area_t, sc->setup_area_h, 234 EM4K_SETUP_WINDOW_OFF, kvtop((void*) sc->pci_mem_win.base) >> 235 EM4K_WINDOW_SHIFT); 236 237 em4k_intr_enable(sc); 238 239 config_found_ia(self, "pcibus", &pba, pcibusprint); 240 } 241 242 #ifdef PCI_NETBSD_CONFIGURE 243 static void 244 em4k_pci_configure(struct em4k_softc *sc) 245 { 246 struct extent *ioext, *memext; 247 248 /* I/O addresses are relative to I/O space address. */ 249 ioext = extent_create("em4kio", 0, EM4K_IO_SIZE, 250 NULL, 0, EX_NOWAIT); 251 252 /* 253 * Memory space addresses are absolute (and keep in mind that 254 * they are in a separate address space. 255 */ 256 memext = extent_create("em4kmem", kvtop((void*) sc->pci_mem_win.base), 257 kvtop((void*) sc->pci_mem_win.base) + sc->pci_mem_win_size, 258 NULL, 0, EX_NOWAIT); 259 260 pci_configure_bus(&sc->apc, ioext, memext, NULL, 0, CACHELINE_SIZE); 261 262 extent_destroy(ioext); 263 extent_destroy(memext); 264 } 265 #endif /* PCI_NETBSD_CONFIGURE */ 266 267 static void 268 em4k_intr_enable(struct em4k_softc *sc) 269 { 270 bus_space_write_1(sc->setup_area_t, sc->setup_area_h, 271 EM4K_SETUP_INTR_OFF, EMPB_INTR_ENABLE); 272 } 273 274 /* 275 * Try to find a (optional) memory window board. 276 */ 277 static void 278 em4k_find_mem(struct em4k_softc *sc) 279 { 280 device_t memdev; 281 struct emmem_softc *mem_sc; 282 283 memdev = device_find_by_xname("emmem0"); 284 sc->pci_mem_win_size = 0; 285 286 if (memdev == NULL) { 287 return; 288 } 289 290 mem_sc = device_private(memdev); 291 292 sc->pci_mem_win.base = (bus_addr_t) mem_sc->sc_base; 293 sc->pci_mem_win.absm = &amiga_bus_stride_1swap_abs; 294 sc->pci_mem_win_size = mem_sc->sc_size; 295 sc->pci_mem_win_t = &sc->pci_mem_win; 296 297 if (sc->pci_mem_win_size == 512*1024*1024) 298 sc->pci_mem_win_mask = EM4K_WINDOW_MASK_512M; 299 else if (sc->pci_mem_win_size == 256*1024*1024) 300 sc->pci_mem_win_mask = EM4K_WINDOW_MASK_256M; 301 else /* disable anyway */ 302 sc->pci_mem_win_size = 0; 303 304 #ifdef EM4K_DEBUG 305 aprint_normal("em4k: found %x b window at %p, switch mask %x\n", 306 sc->pci_mem_win_size, (void*) sc->pci_mem_win.base, 307 sc->pci_mem_win_mask); 308 #endif /* EM4K_DEBUG */ 309 310 } 311 312 pcireg_t 313 em4k_pci_conf_read(pci_chipset_tag_t pc, pcitag_t tag, int reg) 314 { 315 uint32_t data; 316 uint32_t bus, dev, func; 317 318 if ((unsigned int)reg >= PCI_CONF_SIZE) 319 return (pcireg_t) -1; 320 321 pci_decompose_tag(pc, tag, &bus, &dev, &func); 322 323 data = bus_space_read_4(pc->pci_conf_datat, pc->pci_conf_datah, 324 EMPB_CONF_DEV_STRIDE*dev + EMPB_CONF_FUNC_STRIDE*func + reg); 325 #ifdef EM4K_DEBUG_CONF 326 aprint_normal("em4k conf read va: %lx, bus: %d, dev: %d, " 327 "func: %d, reg: %d -r-> data %x\n", 328 pc->pci_conf_datah, bus, dev, func, reg, data); 329 #endif /* EM4K_DEBUG_CONF */ 330 331 return data; 332 } 333 334 void 335 em4k_pci_conf_write(pci_chipset_tag_t pc, pcitag_t tag, int reg, pcireg_t val) 336 { 337 uint32_t bus, dev, func; 338 339 if ((unsigned int)reg >= PCI_CONF_SIZE) 340 return; 341 342 pci_decompose_tag(pc, tag, &bus, &dev, &func); 343 344 bus_space_write_4(pc->pci_conf_datat, pc->pci_conf_datah, 345 EMPB_CONF_DEV_STRIDE*dev + EMPB_CONF_FUNC_STRIDE*func + reg, val); 346 #ifdef EM4K_DEBUG_CONF 347 aprint_normal("em4k conf write va: %lx, bus: %d, dev: %d, " 348 "func: %d, reg: %d -w-> data %x\n", 349 pc->pci_conf_datah, bus, dev, func, reg, val); 350 #endif /* EM4K_DEBUG_CONF */ 351 } 352 353 int 354 em4k_pci_bus_maxdevs(pci_chipset_tag_t pc, int busno) 355 { 356 return 6; /* no Mediator with more than 6 slots? */ 357 } 358 359 void 360 em4k_pci_attach_hook(device_t parent, device_t self, 361 struct pcibus_attach_args *pba) 362 { 363 } 364 365 int 366 em4k_pci_intr_map(const struct pci_attach_args *pa, pci_intr_handle_t *ihp) 367 { 368 /* TODO: add sanity checking */ 369 370 *ihp = EMPB_INT; 371 return 0; 372 } 373 374 const struct evcnt * 375 em4k_pci_intr_evcnt(pci_chipset_tag_t pc, pci_intr_handle_t ih) 376 { 377 /* TODO: implement */ 378 return NULL; 379 } 380 381 int 382 em4k_pci_conf_hook(pci_chipset_tag_t pct, int bus, int dev, int func, 383 pcireg_t id) 384 { 385 return PCI_CONF_DEFAULT; 386 } 387
Indexes created Thu Oct 02 14:10:14 GMT 2025