mace.c revision 1.26
1 /* $NetBSD: mace.c,v 1.26 2023/08/03 08:31:06 mrg Exp $ */ 2 3 /* 4 * Copyright (c) 2003 Christopher Sekiya 5 * Copyright (c) 2002,2003 Rafal K. Boni 6 * Copyright (c) 2000 Soren S. Jorvang 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the 20 * NetBSD Project. See http://www.NetBSD.org/ for 21 * information about NetBSD. 22 * 4. The name of the author may not be used to endorse or promote products 23 * derived from this software without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 26 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 27 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 28 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 29 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 30 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 31 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 34 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 35 */ 36 37 /* 38 * O2 MACE 39 * 40 * The MACE is weird -- although it is a 32-bit device, writes only seem to 41 * work properly if they are 64-bit-at-once writes (at least, out in ISA 42 * space and probably MEC space -- the PCI stuff seems to be okay with _4). 43 * Therefore, the _8* routines are used even though the top 32 bits are 44 * thrown away. 45 */ 46 47 #include <sys/cdefs.h> 48 __KERNEL_RCSID(0, "$NetBSD: mace.c,v 1.26 2023/08/03 08:31:06 mrg Exp $"); 49 50 #include <sys/param.h> 51 #include <sys/systm.h> 52 #include <sys/device.h> 53 #include <sys/callout.h> 54 #include <sys/mbuf.h> 55 #include <sys/malloc.h> 56 #include <sys/kernel.h> 57 #include <sys/socket.h> 58 #include <sys/ioctl.h> 59 #include <sys/errno.h> 60 #include <sys/syslog.h> 61 62 #include <uvm/uvm_extern.h> 63 64 #include <sys/bus.h> 65 #include <machine/cpu.h> 66 #include <machine/locore.h> 67 #include <machine/autoconf.h> 68 #include <machine/machtype.h> 69 70 #include <sgimips/mace/macevar.h> 71 #include <sgimips/mace/macereg.h> 72 #include <sgimips/dev/crimevar.h> 73 #include <sgimips/dev/crimereg.h> 74 75 #include "locators.h" 76 77 #define MACE_NINTR 32 /* actually only 8, but interrupts are shared */ 78 79 struct { 80 unsigned int irq; 81 unsigned int intrmask; 82 int (*func)(void *); 83 void *arg; 84 struct evcnt evcnt; 85 char evname[32]; 86 } maceintrtab[MACE_NINTR]; 87 88 struct mace_softc { 89 device_t sc_dev; 90 91 bus_space_tag_t iot; 92 bus_space_handle_t ioh; 93 bus_dma_tag_t dmat; /* 32KB ring buffers, 4KB segments, for ISA */ 94 int nsegs; 95 bus_dma_segment_t seg; 96 bus_dmamap_t map; 97 98 void *isa_ringbuffer; 99 }; 100 101 static int mace_match(device_t, cfdata_t, void *); 102 static void mace_attach(device_t, device_t, void *); 103 static int mace_print(void *, const char *); 104 static int mace_search(device_t, cfdata_t, const int *, void *); 105 106 CFATTACH_DECL_NEW(mace, sizeof(struct mace_softc), 107 mace_match, mace_attach, NULL, NULL); 108 109 static void mace_isa_bus_mem_init(bus_space_tag_t, void *); 110 111 static struct mips_bus_space mace_isa_mbst; 112 bus_space_tag_t mace_isa_memt = NULL; 113 static int mace_isa_init = 0; 114 115 #if defined(BLINK) 116 static callout_t mace_blink_ch; 117 static void mace_blink(void *); 118 #endif 119 120 static int 121 mace_match(device_t parent, struct cfdata *match, void *aux) 122 { 123 124 /* 125 * The MACE is in the O2. 126 */ 127 if (mach_type == MACH_SGI_IP32) 128 return 1; 129 130 return 0; 131 } 132 133 void 134 mace_init_bus(void) 135 { 136 if (mace_isa_init == 1) 137 return; 138 mace_isa_init = 1; 139 mace_isa_bus_mem_init(&mace_isa_mbst, NULL); 140 mace_isa_memt = &mace_isa_mbst; 141 } 142 143 static void 144 mace_attach(device_t parent, device_t self, void *aux) 145 { 146 struct mace_softc *sc = device_private(self); 147 struct mainbus_attach_args *ma = aux; 148 uint32_t scratch; 149 150 sc->sc_dev = self; 151 #ifdef BLINK 152 callout_init(&mace_blink_ch, 0); 153 #endif 154 155 sc->iot = normal_memt; /* for mace registers */ 156 sc->dmat = &sgimips_default_bus_dma_tag; 157 158 if (bus_space_map(sc->iot, ma->ma_addr, 0, 159 BUS_SPACE_MAP_LINEAR, &sc->ioh)) 160 panic("mace_attach: could not allocate memory\n"); 161 162 aprint_normal("\n"); 163 164 aprint_debug("%s: isa sts %#"PRIx64"\n", device_xname(self), 165 bus_space_read_8(sc->iot, sc->ioh, MACE_ISA_INT_STATUS)); 166 aprint_debug("%s: isa msk %#"PRIx64"\n", device_xname(self), 167 bus_space_read_8(sc->iot, sc->ioh, MACE_ISA_INT_MASK)); 168 169 mace_init_bus(); 170 171 /* 172 * Turn on most ISA interrupts. These are actually masked and 173 * registered via the CRIME, as the MACE ISA interrupt mask is 174 * really whacky and nigh on impossible to map to a sane autoconfig 175 * scheme. We do, however, turn off the count/compare timer and RTC 176 * interrupts as they are unused and conflict with the PS/2 177 * keyboard and mouse interrupts. 178 */ 179 180 bus_space_write_8(sc->iot, sc->ioh, MACE_ISA_INT_MASK, 0xffff0aff); 181 bus_space_write_8(sc->iot, sc->ioh, MACE_ISA_INT_STATUS, 0); 182 183 /* set up LED for solid green or blink, if that's your fancy */ 184 scratch = bus_space_read_8(sc->iot, sc->ioh, MACE_ISA_FLASH_NIC_REG); 185 scratch |= MACE_ISA_LED_RED; 186 scratch &= ~(MACE_ISA_LED_GREEN); 187 bus_space_write_8(sc->iot, sc->ioh, MACE_ISA_FLASH_NIC_REG, scratch); 188 189 #if defined(BLINK) 190 mace_blink(sc); 191 #endif 192 193 /* Initialize the maceintr elements to sane values */ 194 for (scratch = 0; scratch < MACE_NINTR; scratch++) { 195 maceintrtab[scratch].func = NULL; 196 maceintrtab[scratch].irq = 0; 197 } 198 199 config_search(self, NULL, 200 CFARGS(.search = mace_search)); 201 } 202 203 204 static int 205 mace_print(void *aux, const char *pnp) 206 { 207 struct mace_attach_args *maa = aux; 208 209 if (pnp != 0) 210 return QUIET; 211 212 if (maa->maa_offset != MACECF_OFFSET_DEFAULT) 213 aprint_normal(" offset 0x%lx", maa->maa_offset); 214 if (maa->maa_intr != MACECF_INTR_DEFAULT) 215 aprint_normal(" intr %d", maa->maa_intr); 216 if (maa->maa_offset != MACECF_INTRMASK_DEFAULT) 217 aprint_normal(" intrmask 0x%x", maa->maa_intrmask); 218 219 return UNCONF; 220 } 221 222 static int 223 mace_search(device_t parent, struct cfdata *cf, const int *ldesc, void *aux) 224 { 225 struct mace_softc *sc = device_private(parent); 226 struct mace_attach_args maa; 227 int tryagain; 228 229 do { 230 maa.maa_offset = cf->cf_loc[MACECF_OFFSET]; 231 maa.maa_intr = cf->cf_loc[MACECF_INTR]; 232 maa.maa_intrmask = cf->cf_loc[MACECF_INTRMASK]; 233 maa.maa_st = normal_memt; 234 maa.maa_sh = sc->ioh; /* XXX */ 235 maa.maa_dmat = &sgimips_default_bus_dma_tag; 236 maa.isa_ringbuffer = sc->isa_ringbuffer; 237 238 tryagain = 0; 239 if (config_probe(parent, cf, &maa)) { 240 config_attach(parent, cf, &maa, mace_print, CFARGS_NONE); 241 tryagain = (cf->cf_fstate == FSTATE_STAR); 242 } 243 244 } while (tryagain); 245 246 return 0; 247 } 248 249 void * 250 mace_intr_establish(int intr, int level, int (*func)(void *), void *arg) 251 { 252 int i; 253 254 if (intr < 0 || intr >= 16) 255 panic("invalid interrupt number"); 256 257 for (i = 0; i < MACE_NINTR; i++) 258 if (maceintrtab[i].func == NULL) { 259 maceintrtab[i].func = func; 260 maceintrtab[i].arg = arg; 261 maceintrtab[i].irq = (1 << intr); 262 maceintrtab[i].intrmask = level; 263 snprintf(maceintrtab[i].evname, 264 sizeof(maceintrtab[i].evname), 265 "intr %d lv 0x%x", intr, level); 266 evcnt_attach_dynamic(&maceintrtab[i].evcnt, 267 EVCNT_TYPE_INTR, NULL, 268 "mace", maceintrtab[i].evname); 269 break; 270 } 271 272 crime_intr_mask(intr); 273 aprint_debug("mace: established interrupt %d (level %x)\n", 274 intr, level); 275 return (void *)&maceintrtab[i]; 276 } 277 278 void 279 mace_intr_disestablish(void *cookie) 280 { 281 int intr = -1, level = 0, irq = 0, i; 282 283 for (i = 0; i < MACE_NINTR; i++) 284 if (&maceintrtab[i] == cookie) { 285 evcnt_detach(&maceintrtab[i].evcnt); 286 for (intr = 0; 287 maceintrtab[i].irq == (1 << intr); intr++); 288 level = maceintrtab[i].intrmask; 289 irq = maceintrtab[i].irq; 290 291 maceintrtab[i].irq = 0; 292 maceintrtab[i].intrmask = 0; 293 maceintrtab[i].func = NULL; 294 maceintrtab[i].arg = NULL; 295 memset(&maceintrtab[i].evcnt, 0, sizeof (struct evcnt)); 296 memset(&maceintrtab[i].evname, 0, 297 sizeof (maceintrtab[i].evname)); 298 break; 299 } 300 if (intr == -1) 301 panic("mace: lost maceintrtab"); 302 303 /* do not do an unmask when irq is shared. */ 304 for (i = 0; i < MACE_NINTR; i++) 305 if (maceintrtab[i].func != NULL && maceintrtab[i].irq == irq) 306 break; 307 if (i == MACE_NINTR) 308 crime_intr_unmask(intr); 309 aprint_debug("mace: disestablished interrupt %d (level %x)\n", 310 intr, level); 311 } 312 313 void 314 mace_intr(int irqs) 315 { 316 uint64_t isa_irq; 317 int i; 318 319 /* irq 4 is the ISA cascade interrupt. Must handle with care. */ 320 if (irqs & (1 << 4)) { 321 isa_irq = mips3_ld(MIPS_PHYS_TO_KSEG1(MACE_BASE 322 + MACE_ISA_INT_STATUS)); 323 for (i = 0; i < MACE_NINTR; i++) { 324 if ((maceintrtab[i].irq == (1 << 4)) && 325 (isa_irq & maceintrtab[i].intrmask)) { 326 (maceintrtab[i].func)(maceintrtab[i].arg); 327 maceintrtab[i].evcnt.ev_count++; 328 } 329 } 330 irqs &= ~(1 << 4); 331 } 332 333 for (i = 0; i < MACE_NINTR; i++) 334 if ((irqs & maceintrtab[i].irq)) { 335 (maceintrtab[i].func)(maceintrtab[i].arg); 336 maceintrtab[i].evcnt.ev_count++; 337 } 338 } 339 340 #if defined(BLINK) 341 static void 342 mace_blink(void *self) 343 { 344 struct mace_softc *sc = device_private(self); 345 register int s; 346 int value; 347 348 s = splhigh(); 349 value = bus_space_read_8(sc->iot, sc->ioh, MACE_ISA_FLASH_NIC_REG); 350 value ^= MACE_ISA_LED_GREEN; 351 bus_space_write_8(sc->iot, sc->ioh, MACE_ISA_FLASH_NIC_REG, value); 352 splx(s); 353 /* 354 * Blink rate is: 355 * full cycle every second if completely idle (loadav = 0) 356 * full cycle every 2 seconds if loadav = 1 357 * full cycle every 3 seconds if loadav = 2 358 * etc. 359 */ 360 s = (((averunnable.ldavg[0] + FSCALE) * hz) >> (FSHIFT + 1)); 361 callout_reset(&mace_blink_ch, s, mace_blink, sc); 362 363 } 364 #endif 365 366 #define CHIP mace_isa 367 #define CHIP_MEM /* defined */ 368 #define CHIP_ALIGN_STRIDE 8 369 #define CHIP_ACCESS_SIZE 8 370 #define CHIP_W1_BUS_START(v) 0x00000000UL 371 #define CHIP_W1_BUS_END(v) 0xffffffffUL 372 #define CHIP_W1_SYS_START(v) 0x00000000UL 373 #define CHIP_W1_SYS_END(v) 0xffffffffUL 374 375 #include <mips/mips/bus_space_alignstride_chipdep.c> 376
Indexes created Sun Sep 28 16:09:52 GMT 2025