| 1 | /*- |
| 2 | * Copyright (c) 1992, 1993, University of Vermont and State |
| 3 | * Agricultural College. |
| 4 | * Copyright (c) 1992, 1993, Garrett A. Wollman. |
| 5 | * |
| 6 | * Portions: |
| 7 | * Copyright (c) 1990, 1991, William F. Jolitz |
| 8 | * Copyright (c) 1990, The Regents of the University of California |
| 9 | * |
| 10 | * 3Com 3C507 support: |
| 11 | * Copyright (c) 1993, 1994, Charles M. Hannum |
| 12 | * |
| 13 | * EtherExpress 16 support: |
| 14 | * Copyright (c) 1993, 1994, 1995, Rodney W. Grimes |
| 15 | * Copyright (c) 1997, Aaron C. Smith |
| 16 | * |
| 17 | * All rights reserved. |
| 18 | * |
| 19 | * Redistribution and use in source and binary forms, with or without |
| 20 | * modification, are permitted provided that the following conditions |
| 21 | * are met: |
| 22 | * 1. Redistributions of source code must retain the above copyright |
| 23 | * notice, this list of conditions and the following disclaimer. |
| 24 | * 2. Redistributions in binary form must reproduce the above copyright |
| 25 | * notice, this list of conditions and the following disclaimer in the |
| 26 | * documentation and/or other materials provided with the distribution. |
| 27 | * 3. All advertising materials mentioning features or use of this software |
| 28 | * must display the following acknowledgement: |
| 29 | * This product includes software developed by the University of |
| 30 | * Vermont and State Agricultural College and Garrett A. Wollman, by |
| 31 | * William F. Jolitz, by the University of California, Berkeley, |
| 32 | * Lawrence Berkeley Laboratory, and their contributors, by |
| 33 | * Charles M. Hannum, by Rodney W. Grimes, and by Aaron C. Smith. |
| 34 | * 4. Neither the names of the Universities nor the names of the authors |
| 35 | * may be used to endorse or promote products derived from this software |
| 36 | * without specific prior written permission. |
| 37 | * |
| 38 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 39 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 40 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 41 | * ARE DISCLAIMED. IN NO EVENT SHALL THE UNIVERSITY OR AUTHORS BE LIABLE |
| 42 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 43 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 44 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 45 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 46 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 47 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 48 | * SUCH DAMAGE. |
| 49 | * |
| 50 | * $FreeBSD: src/sys/dev/ie/if_ie.c,v 1.72.2.4 2003/03/27 21:01:49 mdodd Exp $ |
| 51 | * $DragonFly: src/sys/dev/netif/ie/if_ie.c,v 1.34 2008/08/02 01:14:42 dillon Exp $ |
| 52 | */ |
| 53 | |
| 54 | /* |
| 55 | * Intel 82586 Ethernet chip |
| 56 | * Register, bit, and structure definitions. |
| 57 | * |
| 58 | * Written by GAW with reference to the Clarkson Packet Driver code for this |
| 59 | * chip written by Russ Nelson and others. |
| 60 | * |
| 61 | * Intel EtherExpress 16 support from if_ix.c, written by Rodney W. Grimes. |
| 62 | */ |
| 63 | |
| 64 | /* |
| 65 | * The i82586 is a very versatile chip, found in many implementations. |
| 66 | * Programming this chip is mostly the same, but certain details differ |
| 67 | * from card to card. This driver is written so that different cards |
| 68 | * can be automatically detected at run-time. |
| 69 | */ |
| 70 | |
| 71 | /* |
| 72 | Mode of operation: |
| 73 | |
| 74 | We run the 82586 in a standard Ethernet mode. We keep NFRAMES received |
| 75 | frame descriptors around for the receiver to use, and NRXBUFS associated |
| 76 | receive buffer descriptors, both in a circular list. Whenever a frame is |
| 77 | received, we rotate both lists as necessary. (The 586 treats both lists |
| 78 | as a simple queue.) We also keep a transmit command around so that packets |
| 79 | can be sent off quickly. |
| 80 | |
| 81 | We configure the adapter in AL-LOC = 1 mode, which means that the |
| 82 | Ethernet/802.3 MAC header is placed at the beginning of the receive buffer |
| 83 | rather than being split off into various fields in the RFD. This also |
| 84 | means that we must include this header in the transmit buffer as well. |
| 85 | |
| 86 | By convention, all transmit commands, and only transmit commands, shall |
| 87 | have the I (IE_CMD_INTR) bit set in the command. This way, when an |
| 88 | interrupt arrives at ieintr(), it is immediately possible to tell |
| 89 | what precisely caused it. ANY OTHER command-sending routines should |
| 90 | run at splimp(), and should post an acknowledgement to every interrupt |
| 91 | they generate. |
| 92 | |
| 93 | The 82586 has a 24-bit address space internally, and the adaptor's memory |
| 94 | is located at the top of this region. However, the value we are given in |
| 95 | configuration is normally the *bottom* of the adaptor RAM. So, we must go |
| 96 | through a few gyrations to come up with a kernel virtual address which |
| 97 | represents the actual beginning of the 586 address space. First, we |
| 98 | autosize the RAM by running through several possible sizes and trying to |
| 99 | initialize the adapter under the assumption that the selected size is |
| 100 | correct. Then, knowing the correct RAM size, we set up our pointers in |
| 101 | ie_softc[unit]. `iomem' represents the computed base of the 586 address |
| 102 | space. `iomembot' represents the actual configured base of adapter RAM. |
| 103 | Finally, `iosize' represents the calculated size of 586 RAM. Then, when |
| 104 | laying out commands, we use the interval [iomembot, iomembot + iosize); to |
| 105 | make 24-pointers, we subtract iomem, and to make 16-pointers, we subtract |
| 106 | iomem and and with 0xffff. |
| 107 | |
| 108 | */ |
| 109 | |
| 110 | #include "use_ie.h" |
| 111 | #include "opt_inet.h" |
| 112 | #include "opt_ipx.h" |
| 113 | |
| 114 | #include <sys/param.h> |
| 115 | #include <sys/systm.h> |
| 116 | #include <sys/eventhandler.h> |
| 117 | #include <sys/kernel.h> |
| 118 | #include <sys/malloc.h> |
| 119 | #include <sys/conf.h> |
| 120 | #include <sys/mbuf.h> |
| 121 | #include <sys/socket.h> |
| 122 | #include <sys/sockio.h> |
| 123 | #include <sys/syslog.h> |
| 124 | #include <sys/thread2.h> |
| 125 | |
| 126 | #include <net/ethernet.h> |
| 127 | #include <net/if.h> |
| 128 | #include <net/ifq_var.h> |
| 129 | #include <net/if_types.h> |
| 130 | #include <net/if_dl.h> |
| 131 | |
| 132 | #include <netinet/in.h> |
| 133 | #include <netinet/if_ether.h> |
| 134 | |
| 135 | #include <machine/clock.h> |
| 136 | #include <machine/md_var.h> |
| 137 | |
| 138 | #include <bus/isa/isa_device.h> |
| 139 | #include <machine_base/isa/ic/i82586.h> |
| 140 | #include <machine_base/icu/icu.h> |
| 141 | #include "if_iereg.h" |
| 142 | #include "if_ie507.h" |
| 143 | #include "if_iee16.h" |
| 144 | #include "../elink_layer/elink.h" |
| 145 | |
| 146 | #include <net/bpf.h> |
| 147 | |
| 148 | #ifdef DEBUG |
| 149 | #define IED_RINT 0x01 |
| 150 | #define IED_TINT 0x02 |
| 151 | #define IED_RNR 0x04 |
| 152 | #define IED_CNA 0x08 |
| 153 | #define IED_READFRAME 0x10 |
| 154 | static int ie_debug = IED_RNR; |
| 155 | |
| 156 | #endif |
| 157 | |
| 158 | DECLARE_DUMMY_MODULE(if_ie); |
| 159 | |
| 160 | #define IE_BUF_LEN ETHER_MAX_LEN /* length of transmit buffer */ |
| 161 | |
| 162 | /* Forward declaration */ |
| 163 | struct ie_softc; |
| 164 | |
| 165 | static int ieprobe(struct isa_device * dvp); |
| 166 | static int ieattach(struct isa_device * dvp); |
| 167 | static void ieintr(void *); |
| 168 | static int sl_probe(struct isa_device * dvp); |
| 169 | static int el_probe(struct isa_device * dvp); |
| 170 | static int ni_probe(struct isa_device * dvp); |
| 171 | static int ee16_probe(struct isa_device * dvp); |
| 172 | |
| 173 | static int check_ie_present(int unit, caddr_t where, unsigned size); |
| 174 | static void ieinit(void *); |
| 175 | static void ie_stop(int unit); |
| 176 | static int ieioctl(struct ifnet * ifp, u_long command, caddr_t data, |
| 177 | struct ucred *); |
| 178 | static void iestart(struct ifnet * ifp); |
| 179 | |
| 180 | static void el_reset_586(int unit); |
| 181 | static void el_chan_attn(int unit); |
| 182 | |
| 183 | static void sl_reset_586(int unit); |
| 184 | static void sl_chan_attn(int unit); |
| 185 | |
| 186 | static void ee16_reset_586(int unit); |
| 187 | static void ee16_chan_attn(int unit); |
| 188 | static __inline void ee16_interrupt_enable(struct ie_softc * ie); |
| 189 | static void ee16_eeprom_outbits(struct ie_softc * ie, int edata, int cnt); |
| 190 | static void ee16_eeprom_clock(struct ie_softc * ie, int state); |
| 191 | static u_short ee16_read_eeprom(struct ie_softc * ie, int location); |
| 192 | static int ee16_eeprom_inbits(struct ie_softc * ie); |
| 193 | static void ee16_shutdown(void *sc, int howto); |
| 194 | |
| 195 | static void iereset(int unit); |
| 196 | static void ie_readframe(int unit, struct ie_softc * ie, int bufno); |
| 197 | static void ie_drop_packet_buffer(int unit, struct ie_softc * ie); |
| 198 | static void sl_read_ether(int unit, unsigned char addr[6]); |
| 199 | static void find_ie_mem_size(int unit); |
| 200 | static int command_and_wait(int unit, int command, |
| 201 | void volatile * pcmd, int); |
| 202 | static void run_tdr(int unit, volatile struct ie_tdr_cmd * cmd); |
| 203 | static int ierint(int unit, struct ie_softc * ie); |
| 204 | static int ietint(int unit, struct ie_softc * ie); |
| 205 | static int iernr(int unit, struct ie_softc * ie); |
| 206 | static void start_receiver(int unit); |
| 207 | static __inline int ieget(int, struct ie_softc *, struct mbuf **); |
| 208 | static v_caddr_t setup_rfa(v_caddr_t ptr, struct ie_softc * ie); |
| 209 | static int mc_setup(int, v_caddr_t, volatile struct ie_sys_ctl_block *); |
| 210 | static void ie_mc_reset(int unit); |
| 211 | |
| 212 | #ifdef DEBUG |
| 213 | static void print_rbd(volatile struct ie_recv_buf_desc * rbd); |
| 214 | |
| 215 | static int in_ierint = 0; |
| 216 | static int in_ietint = 0; |
| 217 | |
| 218 | #endif |
| 219 | |
| 220 | /* |
| 221 | * This tells the autoconf code how to set us up. |
| 222 | */ |
| 223 | struct isa_driver iedriver = { |
| 224 | ieprobe, ieattach, "ie", |
| 225 | }; |
| 226 | |
| 227 | enum ie_hardware { |
| 228 | IE_STARLAN10, |
| 229 | IE_EN100, |
| 230 | IE_SLFIBER, |
| 231 | IE_3C507, |
| 232 | IE_NI5210, |
| 233 | IE_EE16, |
| 234 | IE_UNKNOWN |
| 235 | }; |
| 236 | |
| 237 | static const char *ie_hardware_names[] = { |
| 238 | "StarLAN 10", |
| 239 | "EN100", |
| 240 | "StarLAN Fiber", |
| 241 | "3C507", |
| 242 | "NI5210", |
| 243 | "EtherExpress 16", |
| 244 | "Unknown" |
| 245 | }; |
| 246 | |
| 247 | /* |
| 248 | sizeof(iscp) == 1+1+2+4 == 8 |
| 249 | sizeof(scb) == 2+2+2+2+2+2+2+2 == 16 |
| 250 | NFRAMES * sizeof(rfd) == NFRAMES*(2+2+2+2+6+6+2+2) == NFRAMES*24 == 384 |
| 251 | sizeof(xmit_cmd) == 2+2+2+2+6+2 == 18 |
| 252 | sizeof(transmit buffer) == 1512 |
| 253 | sizeof(transmit buffer desc) == 8 |
| 254 | ----- |
| 255 | 1946 |
| 256 | |
| 257 | NRXBUFS * sizeof(rbd) == NRXBUFS*(2+2+4+2+2) == NRXBUFS*12 |
| 258 | NRXBUFS * IE_RBUF_SIZE == NRXBUFS*256 |
| 259 | |
| 260 | NRXBUFS should be (16384 - 1946) / (256 + 12) == 14438 / 268 == 53 |
| 261 | |
| 262 | With NRXBUFS == 48, this leaves us 1574 bytes for another command or |
| 263 | more buffers. Another transmit command would be 18+8+1512 == 1538 |
| 264 | ---just barely fits! |
| 265 | |
| 266 | Obviously all these would have to be reduced for smaller memory sizes. |
| 267 | With a larger memory, it would be possible to roughly double the number of |
| 268 | both transmit and receive buffers. |
| 269 | */ |
| 270 | |
| 271 | #define NFRAMES 8 /* number of receive frames */ |
| 272 | #define NRXBUFS 48 /* number of buffers to allocate */ |
| 273 | #define IE_RBUF_SIZE 256 /* size of each buffer, MUST BE POWER OF TWO */ |
| 274 | #define NTXBUFS 2 /* number of transmit commands */ |
| 275 | #define IE_TBUF_SIZE ETHER_MAX_LEN /* size of transmit buffer */ |
| 276 | |
| 277 | /* |
| 278 | * Ethernet status, per interface. |
| 279 | */ |
| 280 | static struct ie_softc { |
| 281 | struct arpcom arpcom; |
| 282 | void (*ie_reset_586) (int); |
| 283 | void (*ie_chan_attn) (int); |
| 284 | enum ie_hardware hard_type; |
| 285 | int hard_vers; |
| 286 | int unit; |
| 287 | |
| 288 | u_short port; /* i/o base address for this interface */ |
| 289 | caddr_t iomem; /* memory size */ |
| 290 | caddr_t iomembot; /* memory base address */ |
| 291 | unsigned iosize; |
| 292 | int bus_use; /* 0 means 16bit, 1 means 8 bit adapter */ |
| 293 | |
| 294 | int want_mcsetup; |
| 295 | int promisc; |
| 296 | int nframes; |
| 297 | int nrxbufs; |
| 298 | int ntxbufs; |
| 299 | volatile struct ie_int_sys_conf_ptr *iscp; |
| 300 | volatile struct ie_sys_ctl_block *scb; |
| 301 | volatile struct ie_recv_frame_desc **rframes; /* nframes worth */ |
| 302 | volatile struct ie_recv_buf_desc **rbuffs; /* nrxbufs worth */ |
| 303 | volatile u_char **cbuffs; /* nrxbufs worth */ |
| 304 | int rfhead, rftail, rbhead, rbtail; |
| 305 | |
| 306 | volatile struct ie_xmit_cmd **xmit_cmds; /* ntxbufs worth */ |
| 307 | volatile struct ie_xmit_buf **xmit_buffs; /* ntxbufs worth */ |
| 308 | volatile u_char **xmit_cbuffs; /* ntxbufs worth */ |
| 309 | int xmit_count; |
| 310 | |
| 311 | struct ie_en_addr mcast_addrs[MAXMCAST + 1]; |
| 312 | int mcast_count; |
| 313 | |
| 314 | u_short irq_encoded; /* encoded interrupt on IEE16 */ |
| 315 | } ie_softc[NIE]; |
| 316 | |
| 317 | #define MK_24(base, ptr) ((caddr_t)((uintptr_t)ptr - (uintptr_t)base)) |
| 318 | #define MK_16(base, ptr) ((u_short)(uintptr_t)MK_24(base, ptr)) |
| 319 | |
| 320 | #define PORT ie_softc[unit].port |
| 321 | #define MEM ie_softc[unit].iomem |
| 322 | |
| 323 | int |
| 324 | ieprobe(struct isa_device *dvp) |
| 325 | { |
| 326 | int ret; |
| 327 | |
| 328 | ret = sl_probe(dvp); |
| 329 | if (!ret) |
| 330 | ret = el_probe(dvp); |
| 331 | if (!ret) |
| 332 | ret = ni_probe(dvp); |
| 333 | if (!ret) |
| 334 | ret = ee16_probe(dvp); |
| 335 | |
| 336 | return (ret); |
| 337 | } |
| 338 | |
| 339 | static int |
| 340 | sl_probe(struct isa_device *dvp) |
| 341 | { |
| 342 | int unit = dvp->id_unit; |
| 343 | u_char c; |
| 344 | |
| 345 | ie_softc[unit].port = dvp->id_iobase; |
| 346 | ie_softc[unit].iomembot = dvp->id_maddr; |
| 347 | ie_softc[unit].iomem = 0; |
| 348 | ie_softc[unit].bus_use = 0; |
| 349 | |
| 350 | c = inb(PORT + IEATT_REVISION); |
| 351 | switch (SL_BOARD(c)) { |
| 352 | case SL10_BOARD: |
| 353 | ie_softc[unit].hard_type = IE_STARLAN10; |
| 354 | ie_softc[unit].ie_reset_586 = sl_reset_586; |
| 355 | ie_softc[unit].ie_chan_attn = sl_chan_attn; |
| 356 | break; |
| 357 | case EN100_BOARD: |
| 358 | ie_softc[unit].hard_type = IE_EN100; |
| 359 | ie_softc[unit].ie_reset_586 = sl_reset_586; |
| 360 | ie_softc[unit].ie_chan_attn = sl_chan_attn; |
| 361 | break; |
| 362 | case SLFIBER_BOARD: |
| 363 | ie_softc[unit].hard_type = IE_SLFIBER; |
| 364 | ie_softc[unit].ie_reset_586 = sl_reset_586; |
| 365 | ie_softc[unit].ie_chan_attn = sl_chan_attn; |
| 366 | break; |
| 367 | |
| 368 | /* |
| 369 | * Anything else is not recognized or cannot be used. |
| 370 | */ |
| 371 | default: |
| 372 | return (0); |
| 373 | } |
| 374 | |
| 375 | ie_softc[unit].hard_vers = SL_REV(c); |
| 376 | |
| 377 | /* |
| 378 | * Divine memory size on-board the card. Ususally 16k. |
| 379 | */ |
| 380 | find_ie_mem_size(unit); |
| 381 | |
| 382 | if (!ie_softc[unit].iosize) { |
| 383 | return (0); |
| 384 | } |
| 385 | dvp->id_msize = ie_softc[unit].iosize; |
| 386 | |
| 387 | switch (ie_softc[unit].hard_type) { |
| 388 | case IE_EN100: |
| 389 | case IE_STARLAN10: |
| 390 | case IE_SLFIBER: |
| 391 | sl_read_ether(unit, ie_softc[unit].arpcom.ac_enaddr); |
| 392 | break; |
| 393 | |
| 394 | default: |
| 395 | if (bootverbose) |
| 396 | kprintf("ie%d: unknown AT&T board type code %d\n", unit, |
| 397 | ie_softc[unit].hard_type); |
| 398 | return (0); |
| 399 | } |
| 400 | |
| 401 | return (1); |
| 402 | } |
| 403 | |
| 404 | |
| 405 | static int |
| 406 | el_probe(struct isa_device *dvp) |
| 407 | { |
| 408 | struct ie_softc *sc = &ie_softc[dvp->id_unit]; |
| 409 | u_char c; |
| 410 | int i; |
| 411 | u_char signature[] = "*3COM*"; |
| 412 | int unit = dvp->id_unit; |
| 413 | |
| 414 | sc->unit = unit; |
| 415 | sc->port = dvp->id_iobase; |
| 416 | sc->iomembot = dvp->id_maddr; |
| 417 | sc->bus_use = 0; |
| 418 | |
| 419 | /* Need this for part of the probe. */ |
| 420 | sc->ie_reset_586 = el_reset_586; |
| 421 | sc->ie_chan_attn = el_chan_attn; |
| 422 | |
| 423 | /* Reset and put card in CONFIG state without changing address. */ |
| 424 | elink_reset(); |
| 425 | outb(ELINK_ID_PORT, 0x00); |
| 426 | elink_idseq(ELINK_507_POLY); |
| 427 | elink_idseq(ELINK_507_POLY); |
| 428 | outb(ELINK_ID_PORT, 0xff); |
| 429 | |
| 430 | c = inb(PORT + IE507_MADDR); |
| 431 | if (c & 0x20) { |
| 432 | #ifdef DEBUG |
| 433 | kprintf("ie%d: can't map 3C507 RAM in high memory\n", unit); |
| 434 | #endif |
| 435 | return (0); |
| 436 | } |
| 437 | /* go to RUN state */ |
| 438 | outb(ELINK_ID_PORT, 0x00); |
| 439 | elink_idseq(ELINK_507_POLY); |
| 440 | outb(ELINK_ID_PORT, 0x00); |
| 441 | |
| 442 | outb(PORT + IE507_CTRL, EL_CTRL_NRST); |
| 443 | |
| 444 | for (i = 0; i < 6; i++) |
| 445 | if (inb(PORT + i) != signature[i]) |
| 446 | return (0); |
| 447 | |
| 448 | c = inb(PORT + IE507_IRQ) & 0x0f; |
| 449 | |
| 450 | if (dvp->id_irq != (1 << c)) { |
| 451 | kprintf("ie%d: kernel configured irq %d " |
| 452 | "doesn't match board configured irq %d\n", |
| 453 | unit, ffs(dvp->id_irq) - 1, c); |
| 454 | return (0); |
| 455 | } |
| 456 | c = (inb(PORT + IE507_MADDR) & 0x1c) + 0xc0; |
| 457 | |
| 458 | if (kvtop(dvp->id_maddr) != ((int) c << 12)) { |
| 459 | kprintf("ie%d: kernel configured maddr %llx " |
| 460 | "doesn't match board configured maddr %x\n", |
| 461 | unit, kvtop(dvp->id_maddr), (int) c << 12); |
| 462 | return (0); |
| 463 | } |
| 464 | outb(PORT + IE507_CTRL, EL_CTRL_NORMAL); |
| 465 | |
| 466 | sc->hard_type = IE_3C507; |
| 467 | sc->hard_vers = 0; /* 3C507 has no version number. */ |
| 468 | |
| 469 | /* |
| 470 | * Divine memory size on-board the card. |
| 471 | */ |
| 472 | find_ie_mem_size(unit); |
| 473 | |
| 474 | if (!sc->iosize) { |
| 475 | kprintf("ie%d: can't find shared memory\n", unit); |
| 476 | outb(PORT + IE507_CTRL, EL_CTRL_NRST); |
| 477 | return (0); |
| 478 | } |
| 479 | if (!dvp->id_msize) |
| 480 | dvp->id_msize = sc->iosize; |
| 481 | else if (dvp->id_msize != sc->iosize) { |
| 482 | kprintf("ie%d: kernel configured msize %d " |
| 483 | "doesn't match board configured msize %d\n", |
| 484 | unit, dvp->id_msize, sc->iosize); |
| 485 | outb(PORT + IE507_CTRL, EL_CTRL_NRST); |
| 486 | return (0); |
| 487 | } |
| 488 | sl_read_ether(unit, ie_softc[unit].arpcom.ac_enaddr); |
| 489 | |
| 490 | /* Clear the interrupt latch just in case. */ |
| 491 | outb(PORT + IE507_ICTRL, 1); |
| 492 | |
| 493 | return (16); |
| 494 | } |
| 495 | |
| 496 | |
| 497 | static int |
| 498 | ni_probe(struct isa_device *dvp) |
| 499 | { |
| 500 | int unit = dvp->id_unit; |
| 501 | int boardtype, c; |
| 502 | |
| 503 | ie_softc[unit].port = dvp->id_iobase; |
| 504 | ie_softc[unit].iomembot = dvp->id_maddr; |
| 505 | ie_softc[unit].iomem = 0; |
| 506 | ie_softc[unit].bus_use = 1; |
| 507 | |
| 508 | boardtype = inb(PORT + IEATT_REVISION); |
| 509 | c = inb(PORT + IEATT_REVISION + 1); |
| 510 | boardtype = boardtype + (c << 8); |
| 511 | switch (boardtype) { |
| 512 | case 0x5500: /* This is the magic cookie for the NI5210 */ |
| 513 | ie_softc[unit].hard_type = IE_NI5210; |
| 514 | ie_softc[unit].ie_reset_586 = sl_reset_586; |
| 515 | ie_softc[unit].ie_chan_attn = sl_chan_attn; |
| 516 | break; |
| 517 | |
| 518 | /* |
| 519 | * Anything else is not recognized or cannot be used. |
| 520 | */ |
| 521 | default: |
| 522 | return (0); |
| 523 | } |
| 524 | |
| 525 | ie_softc[unit].hard_vers = 0; |
| 526 | |
| 527 | /* |
| 528 | * Divine memory size on-board the card. Either 8 or 16k. |
| 529 | */ |
| 530 | find_ie_mem_size(unit); |
| 531 | |
| 532 | if (!ie_softc[unit].iosize) { |
| 533 | return (0); |
| 534 | } |
| 535 | if (!dvp->id_msize) |
| 536 | dvp->id_msize = ie_softc[unit].iosize; |
| 537 | else if (dvp->id_msize != ie_softc[unit].iosize) { |
| 538 | kprintf("ie%d: kernel configured msize %d " |
| 539 | "doesn't match board configured msize %d\n", |
| 540 | unit, dvp->id_msize, ie_softc[unit].iosize); |
| 541 | return (0); |
| 542 | } |
| 543 | sl_read_ether(unit, ie_softc[unit].arpcom.ac_enaddr); |
| 544 | |
| 545 | return (8); |
| 546 | |
| 547 | } |
| 548 | |
| 549 | |
| 550 | static void |
| 551 | ee16_shutdown(void *sc, int howto) |
| 552 | { |
| 553 | struct ie_softc *ie = (struct ie_softc *)sc; |
| 554 | int unit = ie - &ie_softc[0]; |
| 555 | |
| 556 | ee16_reset_586(unit); |
| 557 | outb(PORT + IEE16_ECTRL, IEE16_RESET_ASIC); |
| 558 | outb(PORT + IEE16_ECTRL, 0); |
| 559 | } |
| 560 | |
| 561 | |
| 562 | /* Taken almost exactly from Rod's if_ix.c. */ |
| 563 | |
| 564 | int |
| 565 | ee16_probe(struct isa_device *dvp) |
| 566 | { |
| 567 | struct ie_softc *sc = &ie_softc[dvp->id_unit]; |
| 568 | |
| 569 | int i; |
| 570 | int unit = dvp->id_unit; |
| 571 | u_short board_id, id_var1, id_var2, checksum = 0; |
| 572 | u_short eaddrtemp, irq; |
| 573 | u_short pg, adjust, decode, edecode; |
| 574 | u_char bart_config; |
| 575 | u_long bd_maddr; |
| 576 | |
| 577 | short irq_translate[] = {0, 1 << ICU_IRQ9, 1 << ICU_IRQ3, |
| 578 | 1 << ICU_IRQ4, 1 << ICU_IRQ5, |
| 579 | 1 << ICU_IRQ10, 1 << ICU_IRQ11, 0}; |
| 580 | char irq_encode[] = {0, 0, 0, 2, 3, 4, 0, 0, 0, 1, 5, 6, 0, 0, 0, 0}; |
| 581 | |
| 582 | /* Need this for part of the probe. */ |
| 583 | sc->ie_reset_586 = ee16_reset_586; |
| 584 | sc->ie_chan_attn = ee16_chan_attn; |
| 585 | |
| 586 | /* unsure if this is necessary */ |
| 587 | sc->bus_use = 0; |
| 588 | |
| 589 | /* reset any ee16 at the current iobase */ |
| 590 | outb(dvp->id_iobase + IEE16_ECTRL, IEE16_RESET_ASIC); |
| 591 | outb(dvp->id_iobase + IEE16_ECTRL, 0); |
| 592 | DELAY(240); |
| 593 | |
| 594 | /* now look for ee16. */ |
| 595 | board_id = id_var1 = id_var2 = 0; |
| 596 | for (i = 0; i < 4; i++) { |
| 597 | id_var1 = inb(dvp->id_iobase + IEE16_ID_PORT); |
| 598 | id_var2 = ((id_var1 & 0x03) << 2); |
| 599 | board_id |= ((id_var1 >> 4) << id_var2); |
| 600 | } |
| 601 | |
| 602 | if (board_id != IEE16_ID) { |
| 603 | if (bootverbose) |
| 604 | kprintf("ie%d: unknown board_id: %x\n", unit, board_id); |
| 605 | return (0); |
| 606 | } |
| 607 | /* need sc->port for ee16_read_eeprom */ |
| 608 | sc->port = dvp->id_iobase; |
| 609 | sc->hard_type = IE_EE16; |
| 610 | |
| 611 | /* |
| 612 | * The shared RAM location on the EE16 is encoded into bits 3-7 of |
| 613 | * EEPROM location 6. We zero the upper byte, and shift the 5 bits |
| 614 | * right 3. The resulting number tells us the RAM location. |
| 615 | * Because the EE16 supports either 16k or 32k of shared RAM, we |
| 616 | * only worry about the 32k locations. |
| 617 | * |
| 618 | * NOTE: if a 64k EE16 exists, it should be added to this switch. then |
| 619 | * the ia->ia_msize would need to be set per case statement. |
| 620 | * |
| 621 | * value msize location ===== ===== ======== 0x03 0x8000 |
| 622 | * 0xCC000 0x06 0x8000 0xD0000 0x0C 0x8000 0xD4000 0x18 |
| 623 | * 0x8000 0xD8000 |
| 624 | * |
| 625 | */ |
| 626 | |
| 627 | bd_maddr = 0; |
| 628 | i = (ee16_read_eeprom(sc, 6) & 0x00ff) >> 3; |
| 629 | switch (i) { |
| 630 | case 0x03: |
| 631 | bd_maddr = 0xCC000; |
| 632 | break; |
| 633 | case 0x06: |
| 634 | bd_maddr = 0xD0000; |
| 635 | break; |
| 636 | case 0x0c: |
| 637 | bd_maddr = 0xD4000; |
| 638 | break; |
| 639 | case 0x18: |
| 640 | bd_maddr = 0xD8000; |
| 641 | break; |
| 642 | default: |
| 643 | bd_maddr = 0; |
| 644 | break; |
| 645 | } |
| 646 | dvp->id_msize = 0x8000; |
| 647 | if (kvtop(dvp->id_maddr) != bd_maddr) { |
| 648 | kprintf("ie%d: kernel configured maddr %llx " |
| 649 | "doesn't match board configured maddr %lx\n", |
| 650 | unit, kvtop(dvp->id_maddr), bd_maddr); |
| 651 | } |
| 652 | sc->iomembot = dvp->id_maddr; |
| 653 | sc->iomem = 0; /* XXX some probes set this and some don't */ |
| 654 | sc->iosize = dvp->id_msize; |
| 655 | |
| 656 | /* need to put the 586 in RESET while we access the eeprom. */ |
| 657 | outb(PORT + IEE16_ECTRL, IEE16_RESET_586); |
| 658 | |
| 659 | /* read the eeprom and checksum it, should == IEE16_ID */ |
| 660 | for (i = 0; i < 0x40; i++) |
| 661 | checksum += ee16_read_eeprom(sc, i); |
| 662 | |
| 663 | if (checksum != IEE16_ID) { |
| 664 | kprintf("ie%d: invalid eeprom checksum: %x\n", unit, checksum); |
| 665 | return (0); |
| 666 | } |
| 667 | /* |
| 668 | * Size and test the memory on the board. The size of the memory |
| 669 | * can be one of 16k, 32k, 48k or 64k. It can be located in the |
| 670 | * address range 0xC0000 to 0xEFFFF on 16k boundaries. |
| 671 | * |
| 672 | * If the size does not match the passed in memory allocation size |
| 673 | * issue a warning, but continue with the minimum of the two sizes. |
| 674 | */ |
| 675 | |
| 676 | switch (dvp->id_msize) { |
| 677 | case 65536: |
| 678 | case 32768: /* XXX Only support 32k and 64k right now */ |
| 679 | break; |
| 680 | case 16384: |
| 681 | case 49512: |
| 682 | default: |
| 683 | kprintf("ie%d: mapped memory size %d not supported\n", unit, |
| 684 | dvp->id_msize); |
| 685 | return (0); |
| 686 | break; /* NOTREACHED */ |
| 687 | } |
| 688 | |
| 689 | if ((kvtop(dvp->id_maddr) < 0xC0000) || |
| 690 | (kvtop(dvp->id_maddr) + sc->iosize > 0xF0000)) { |
| 691 | kprintf("ie%d: mapped memory location %p out of range\n", unit, |
| 692 | (void *)dvp->id_maddr); |
| 693 | return (0); |
| 694 | } |
| 695 | pg = (kvtop(dvp->id_maddr) & 0x3C000) >> 14; |
| 696 | adjust = IEE16_MCTRL_FMCS16 | (pg & 0x3) << 2; |
| 697 | decode = ((1 << (sc->iosize / 16384)) - 1) << pg; |
| 698 | edecode = ((~decode >> 4) & 0xF0) | (decode >> 8); |
| 699 | |
| 700 | /* ZZZ This should be checked against eeprom location 6, low byte */ |
| 701 | outb(PORT + IEE16_MEMDEC, decode & 0xFF); |
| 702 | /* ZZZ This should be checked against eeprom location 1, low byte */ |
| 703 | outb(PORT + IEE16_MCTRL, adjust); |
| 704 | /* ZZZ Now if I could find this one I would have it made */ |
| 705 | outb(PORT + IEE16_MPCTRL, (~decode & 0xFF)); |
| 706 | /* ZZZ I think this is location 6, high byte */ |
| 707 | outb(PORT + IEE16_MECTRL, edecode); /* XXX disable Exxx */ |
| 708 | |
| 709 | kvtop(dvp->id_maddr); |
| 710 | |
| 711 | /* |
| 712 | * first prime the stupid bart DRAM controller so that it works, |
| 713 | * then zero out all of memory. |
| 714 | */ |
| 715 | bzero(sc->iomembot, 32); |
| 716 | bzero(sc->iomembot, sc->iosize); |
| 717 | |
| 718 | /* |
| 719 | * Get the encoded interrupt number from the EEPROM, check it |
| 720 | * against the passed in IRQ. Issue a warning if they do not match. |
| 721 | * Always use the passed in IRQ, not the one in the EEPROM. |
| 722 | */ |
| 723 | irq = ee16_read_eeprom(sc, IEE16_EEPROM_CONFIG1); |
| 724 | irq = (irq & IEE16_EEPROM_IRQ) >> IEE16_EEPROM_IRQ_SHIFT; |
| 725 | irq = irq_translate[irq]; |
| 726 | if (dvp->id_irq > 0) { |
| 727 | if (irq != dvp->id_irq) { |
| 728 | kprintf("ie%d: WARNING: board configured " |
| 729 | "at irq %u, using %u\n", |
| 730 | dvp->id_unit, dvp->id_irq, irq); |
| 731 | irq = dvp->id_unit; |
| 732 | } |
| 733 | } else { |
| 734 | dvp->id_irq = irq; |
| 735 | } |
| 736 | sc->irq_encoded = irq_encode[ffs(irq) - 1]; |
| 737 | |
| 738 | /* |
| 739 | * Get the hardware ethernet address from the EEPROM and save it in |
| 740 | * the softc for use by the 586 setup code. |
| 741 | */ |
| 742 | eaddrtemp = ee16_read_eeprom(sc, IEE16_EEPROM_ENET_HIGH); |
| 743 | sc->arpcom.ac_enaddr[1] = eaddrtemp & 0xFF; |
| 744 | sc->arpcom.ac_enaddr[0] = eaddrtemp >> 8; |
| 745 | eaddrtemp = ee16_read_eeprom(sc, IEE16_EEPROM_ENET_MID); |
| 746 | sc->arpcom.ac_enaddr[3] = eaddrtemp & 0xFF; |
| 747 | sc->arpcom.ac_enaddr[2] = eaddrtemp >> 8; |
| 748 | eaddrtemp = ee16_read_eeprom(sc, IEE16_EEPROM_ENET_LOW); |
| 749 | sc->arpcom.ac_enaddr[5] = eaddrtemp & 0xFF; |
| 750 | sc->arpcom.ac_enaddr[4] = eaddrtemp >> 8; |
| 751 | |
| 752 | /* disable the board interrupts */ |
| 753 | outb(PORT + IEE16_IRQ, sc->irq_encoded); |
| 754 | |
| 755 | /* enable loopback to keep bad packets off the wire */ |
| 756 | if (sc->hard_type == IE_EE16) { |
| 757 | bart_config = inb(PORT + IEE16_CONFIG); |
| 758 | bart_config |= IEE16_BART_LOOPBACK; |
| 759 | bart_config |= IEE16_BART_MCS16_TEST;/* inb doesn't get bit! */ |
| 760 | outb(PORT + IEE16_CONFIG, bart_config); |
| 761 | bart_config = inb(PORT + IEE16_CONFIG); |
| 762 | } |
| 763 | /* take the board out of reset state */ |
| 764 | outb(PORT + IEE16_ECTRL, 0); |
| 765 | DELAY(100); |
| 766 | |
| 767 | if (!check_ie_present(unit, dvp->id_maddr, sc->iosize)) |
| 768 | return (0); |
| 769 | |
| 770 | return (16); /* return the number of I/O ports */ |
| 771 | } |
| 772 | |
| 773 | /* |
| 774 | * Taken almost exactly from Bill's if_is.c, then modified beyond recognition. |
| 775 | */ |
| 776 | int |
| 777 | ieattach(struct isa_device *dvp) |
| 778 | { |
| 779 | int factor; |
| 780 | int unit = dvp->id_unit; |
| 781 | struct ie_softc *ie = &ie_softc[unit]; |
| 782 | struct ifnet *ifp = &ie->arpcom.ac_if; |
| 783 | size_t allocsize; |
| 784 | |
| 785 | dvp->id_intr = (inthand2_t *)ieintr; |
| 786 | |
| 787 | /* |
| 788 | * based on the amount of memory we have, allocate our tx and rx |
| 789 | * resources. |
| 790 | */ |
| 791 | factor = dvp->id_msize / 16384; |
| 792 | ie->nframes = factor * NFRAMES; |
| 793 | ie->nrxbufs = factor * NRXBUFS; |
| 794 | ie->ntxbufs = factor * NTXBUFS; |
| 795 | |
| 796 | /* |
| 797 | * Since all of these guys are arrays of pointers, allocate as one |
| 798 | * big chunk and dole out accordingly. |
| 799 | */ |
| 800 | allocsize = sizeof(void *) * (ie->nframes |
| 801 | + (ie->nrxbufs * 2) |
| 802 | + (ie->ntxbufs * 3)); |
| 803 | ie->rframes = kmalloc(allocsize, M_DEVBUF, M_WAITOK); |
| 804 | ie->rbuffs = |
| 805 | (volatile struct ie_recv_buf_desc **)&ie->rframes[ie->nframes]; |
| 806 | ie->cbuffs = (volatile u_char **)&ie->rbuffs[ie->nrxbufs]; |
| 807 | ie->xmit_cmds = |
| 808 | (volatile struct ie_xmit_cmd **)&ie->cbuffs[ie->nrxbufs]; |
| 809 | ie->xmit_buffs = |
| 810 | (volatile struct ie_xmit_buf **)&ie->xmit_cmds[ie->ntxbufs]; |
| 811 | ie->xmit_cbuffs = (volatile u_char **)&ie->xmit_buffs[ie->ntxbufs]; |
| 812 | |
| 813 | ifp->if_softc = ie; |
| 814 | if_initname(ifp, iedriver.name, unit); |
| 815 | ifp->if_mtu = ETHERMTU; |
| 816 | if_printf(ifp, "<%s R%d>", ie_hardware_names[ie->hard_type], |
| 817 | ie->hard_vers + 1); |
| 818 | |
| 819 | ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; |
| 820 | ifp->if_start = iestart; |
| 821 | ifp->if_ioctl = ieioctl; |
| 822 | ifp->if_init = ieinit; |
| 823 | ifp->if_type = IFT_ETHER; |
| 824 | ifp->if_addrlen = 6; |
| 825 | ifp->if_hdrlen = 14; |
| 826 | ifq_set_maxlen(&ifp->if_snd, IFQ_MAXLEN); |
| 827 | ifq_set_ready(&ifp->if_snd); |
| 828 | |
| 829 | if (ie->hard_type == IE_EE16) |
| 830 | EVENTHANDLER_REGISTER(shutdown_post_sync, ee16_shutdown, |
| 831 | ie, SHUTDOWN_PRI_DRIVER); |
| 832 | |
| 833 | ether_ifattach(ifp, ie->arpcom.ac_enaddr, NULL); |
| 834 | return (1); |
| 835 | } |
| 836 | |
| 837 | /* |
| 838 | * What to do upon receipt of an interrupt. |
| 839 | */ |
| 840 | static void |
| 841 | ieintr(void *arg) |
| 842 | { |
| 843 | int unit = (int)arg; |
| 844 | struct ie_softc *ie = &ie_softc[unit]; |
| 845 | u_short status; |
| 846 | |
| 847 | lwkt_serialize_enter(ie->arpcom.ac_if.if_serializer); |
| 848 | |
| 849 | /* Clear the interrupt latch on the 3C507. */ |
| 850 | if (ie->hard_type == IE_3C507 |
| 851 | && (inb(PORT + IE507_CTRL) & EL_CTRL_INTL)) |
| 852 | outb(PORT + IE507_ICTRL, 1); |
| 853 | |
| 854 | /* disable interrupts on the EE16. */ |
| 855 | if (ie->hard_type == IE_EE16) |
| 856 | outb(PORT + IEE16_IRQ, ie->irq_encoded); |
| 857 | |
| 858 | status = ie->scb->ie_status; |
| 859 | |
| 860 | loop: |
| 861 | |
| 862 | /* Don't ack interrupts which we didn't receive */ |
| 863 | ie_ack(ie->scb, IE_ST_WHENCE & status, unit, ie->ie_chan_attn); |
| 864 | |
| 865 | if (status & (IE_ST_RECV | IE_ST_RNR)) { |
| 866 | #ifdef DEBUG |
| 867 | in_ierint++; |
| 868 | if (ie_debug & IED_RINT) |
| 869 | kprintf("ie%d: rint\n", unit); |
| 870 | #endif |
| 871 | ierint(unit, ie); |
| 872 | #ifdef DEBUG |
| 873 | in_ierint--; |
| 874 | #endif |
| 875 | } |
| 876 | if (status & IE_ST_DONE) { |
| 877 | #ifdef DEBUG |
| 878 | in_ietint++; |
| 879 | if (ie_debug & IED_TINT) |
| 880 | kprintf("ie%d: tint\n", unit); |
| 881 | #endif |
| 882 | ietint(unit, ie); |
| 883 | #ifdef DEBUG |
| 884 | in_ietint--; |
| 885 | #endif |
| 886 | } |
| 887 | if (status & IE_ST_RNR) { |
| 888 | #ifdef DEBUG |
| 889 | if (ie_debug & IED_RNR) |
| 890 | kprintf("ie%d: rnr\n", unit); |
| 891 | #endif |
| 892 | iernr(unit, ie); |
| 893 | } |
| 894 | #ifdef DEBUG |
| 895 | if ((status & IE_ST_ALLDONE) |
| 896 | && (ie_debug & IED_CNA)) |
| 897 | kprintf("ie%d: cna\n", unit); |
| 898 | #endif |
| 899 | |
| 900 | if ((status = ie->scb->ie_status) & IE_ST_WHENCE) |
| 901 | goto loop; |
| 902 | |
| 903 | /* Clear the interrupt latch on the 3C507. */ |
| 904 | if (ie->hard_type == IE_3C507) |
| 905 | outb(PORT + IE507_ICTRL, 1); |
| 906 | |
| 907 | /* enable interrupts on the EE16. */ |
| 908 | if (ie->hard_type == IE_EE16) |
| 909 | outb(PORT + IEE16_IRQ, ie->irq_encoded | IEE16_IRQ_ENABLE); |
| 910 | |
| 911 | lwkt_serialize_exit(ie->arpcom.ac_if.if_serializer); |
| 912 | } |
| 913 | |
| 914 | /* |
| 915 | * Process a received-frame interrupt. |
| 916 | */ |
| 917 | static int |
| 918 | ierint(int unit, struct ie_softc *ie) |
| 919 | { |
| 920 | int i, status; |
| 921 | static int timesthru = 1024; |
| 922 | |
| 923 | i = ie->rfhead; |
| 924 | while (1) { |
| 925 | status = ie->rframes[i]->ie_fd_status; |
| 926 | |
| 927 | if ((status & IE_FD_COMPLETE) && (status & IE_FD_OK)) { |
| 928 | ie->arpcom.ac_if.if_ipackets++; |
| 929 | if (!--timesthru) { |
| 930 | ie->arpcom.ac_if.if_ierrors += |
| 931 | ie->scb->ie_err_crc + |
| 932 | ie->scb->ie_err_align + |
| 933 | ie->scb->ie_err_resource + |
| 934 | ie->scb->ie_err_overrun; |
| 935 | ie->scb->ie_err_crc = 0; |
| 936 | ie->scb->ie_err_align = 0; |
| 937 | ie->scb->ie_err_resource = 0; |
| 938 | ie->scb->ie_err_overrun = 0; |
| 939 | timesthru = 1024; |
| 940 | } |
| 941 | ie_readframe(unit, ie, i); |
| 942 | } else { |
| 943 | if (status & IE_FD_RNR) { |
| 944 | if (!(ie->scb->ie_status & IE_RU_READY)) { |
| 945 | ie->rframes[0]->ie_fd_next = |
| 946 | MK_16(MEM, ie->rbuffs[0]); |
| 947 | ie->scb->ie_recv_list = |
| 948 | MK_16(MEM, ie->rframes[0]); |
| 949 | command_and_wait(unit, IE_RU_START, |
| 950 | 0, 0); |
| 951 | } |
| 952 | } |
| 953 | break; |
| 954 | } |
| 955 | i = (i + 1) % ie->nframes; |
| 956 | } |
| 957 | return (0); |
| 958 | } |
| 959 | |
| 960 | /* |
| 961 | * Process a command-complete interrupt. These are only generated by |
| 962 | * the transmission of frames. This routine is deceptively simple, since |
| 963 | * most of the real work is done by iestart(). |
| 964 | */ |
| 965 | static int |
| 966 | ietint(int unit, struct ie_softc *ie) |
| 967 | { |
| 968 | int status; |
| 969 | int i; |
| 970 | |
| 971 | ie->arpcom.ac_if.if_timer = 0; |
| 972 | ie->arpcom.ac_if.if_flags &= ~IFF_OACTIVE; |
| 973 | |
| 974 | for (i = 0; i < ie->xmit_count; i++) { |
| 975 | status = ie->xmit_cmds[i]->ie_xmit_status; |
| 976 | |
| 977 | if (status & IE_XS_LATECOLL) { |
| 978 | kprintf("ie%d: late collision\n", unit); |
| 979 | ie->arpcom.ac_if.if_collisions++; |
| 980 | ie->arpcom.ac_if.if_oerrors++; |
| 981 | } else if (status & IE_XS_NOCARRIER) { |
| 982 | kprintf("ie%d: no carrier\n", unit); |
| 983 | ie->arpcom.ac_if.if_oerrors++; |
| 984 | } else if (status & IE_XS_LOSTCTS) { |
| 985 | kprintf("ie%d: lost CTS\n", unit); |
| 986 | ie->arpcom.ac_if.if_oerrors++; |
| 987 | } else if (status & IE_XS_UNDERRUN) { |
| 988 | kprintf("ie%d: DMA underrun\n", unit); |
| 989 | ie->arpcom.ac_if.if_oerrors++; |
| 990 | } else if (status & IE_XS_EXCMAX) { |
| 991 | kprintf("ie%d: too many collisions\n", unit); |
| 992 | ie->arpcom.ac_if.if_collisions += 16; |
| 993 | ie->arpcom.ac_if.if_oerrors++; |
| 994 | } else { |
| 995 | ie->arpcom.ac_if.if_opackets++; |
| 996 | ie->arpcom.ac_if.if_collisions += status & IE_XS_MAXCOLL; |
| 997 | } |
| 998 | } |
| 999 | ie->xmit_count = 0; |
| 1000 | |
| 1001 | /* |
| 1002 | * If multicast addresses were added or deleted while we were |
| 1003 | * transmitting, ie_mc_reset() set the want_mcsetup flag indicating |
| 1004 | * that we should do it. |
| 1005 | */ |
| 1006 | if (ie->want_mcsetup) { |
| 1007 | mc_setup(unit, (v_caddr_t) ie->xmit_cbuffs[0], ie->scb); |
| 1008 | ie->want_mcsetup = 0; |
| 1009 | } |
| 1010 | /* Wish I knew why this seems to be necessary... */ |
| 1011 | ie->xmit_cmds[0]->ie_xmit_status |= IE_STAT_COMPL; |
| 1012 | |
| 1013 | if_devstart(&ie->arpcom.ac_if); |
| 1014 | return (0); /* shouldn't be necessary */ |
| 1015 | } |
| 1016 | |
| 1017 | /* |
| 1018 | * Process a receiver-not-ready interrupt. I believe that we get these |
| 1019 | * when there aren't enough buffers to go around. For now (FIXME), we |
| 1020 | * just restart the receiver, and hope everything's ok. |
| 1021 | */ |
| 1022 | static int |
| 1023 | iernr(int unit, struct ie_softc *ie) |
| 1024 | { |
| 1025 | #ifdef doesnt_work |
| 1026 | setup_rfa((v_caddr_t) ie->rframes[0], ie); |
| 1027 | |
| 1028 | ie->scb->ie_recv_list = MK_16(MEM, ie_softc[unit].rframes[0]); |
| 1029 | command_and_wait(unit, IE_RU_START, 0, 0); |
| 1030 | #else |
| 1031 | /* This doesn't work either, but it doesn't hang either. */ |
| 1032 | command_and_wait(unit, IE_RU_DISABLE, 0, 0); /* just in case */ |
| 1033 | setup_rfa((v_caddr_t) ie->rframes[0], ie); /* ignore cast-qual */ |
| 1034 | |
| 1035 | ie->scb->ie_recv_list = MK_16(MEM, ie_softc[unit].rframes[0]); |
| 1036 | command_and_wait(unit, IE_RU_START, 0, 0); /* was ENABLE */ |
| 1037 | |
| 1038 | #endif |
| 1039 | ie_ack(ie->scb, IE_ST_WHENCE, unit, ie->ie_chan_attn); |
| 1040 | |
| 1041 | ie->arpcom.ac_if.if_ierrors++; |
| 1042 | return (0); |
| 1043 | } |
| 1044 | |
| 1045 | /* |
| 1046 | * Compare two Ether/802 addresses for equality, inlined and |
| 1047 | * unrolled for speed. I'd love to have an inline assembler |
| 1048 | * version of this... |
| 1049 | */ |
| 1050 | static __inline int |
| 1051 | ether_equal(u_char * one, u_char * two) |
| 1052 | { |
| 1053 | if (one[0] != two[0]) |
| 1054 | return (0); |
| 1055 | if (one[1] != two[1]) |
| 1056 | return (0); |
| 1057 | if (one[2] != two[2]) |
| 1058 | return (0); |
| 1059 | if (one[3] != two[3]) |
| 1060 | return (0); |
| 1061 | if (one[4] != two[4]) |
| 1062 | return (0); |
| 1063 | if (one[5] != two[5]) |
| 1064 | return (0); |
| 1065 | return 1; |
| 1066 | } |
| 1067 | |
| 1068 | /* |
| 1069 | * Determine quickly whether we should bother reading in this packet. |
| 1070 | * This depends on whether BPF and/or bridging is enabled, whether we |
| 1071 | * are receiving multicast address, and whether promiscuous mode is enabled. |
| 1072 | * We assume that if IFF_PROMISC is set, then *somebody* wants to see |
| 1073 | * all incoming packets. |
| 1074 | */ |
| 1075 | static __inline int |
| 1076 | check_eh(struct ie_softc *ie, struct ether_header *eh) |
| 1077 | { |
| 1078 | /* Optimize the common case: normal operation. We've received |
| 1079 | either a unicast with our dest or a multicast packet. */ |
| 1080 | if (ie->promisc == 0) { |
| 1081 | int i; |
| 1082 | |
| 1083 | /* If not multicast, it's definitely for us */ |
| 1084 | if ((eh->ether_dhost[0] & 1) == 0) |
| 1085 | return (1); |
| 1086 | |
| 1087 | /* Accept broadcasts (loose but fast check) */ |
| 1088 | if (eh->ether_dhost[0] == 0xff) |
| 1089 | return (1); |
| 1090 | |
| 1091 | /* Compare against our multicast addresses */ |
| 1092 | for (i = 0; i < ie->mcast_count; i++) { |
| 1093 | if (ether_equal(eh->ether_dhost, |
| 1094 | (u_char *)&ie->mcast_addrs[i])) |
| 1095 | return (1); |
| 1096 | } |
| 1097 | return (0); |
| 1098 | } |
| 1099 | |
| 1100 | /* Always accept packets when in promiscuous mode */ |
| 1101 | if ((ie->promisc & IFF_PROMISC) != 0) |
| 1102 | return (1); |
| 1103 | |
| 1104 | /* Always accept packets directed at us */ |
| 1105 | if (ether_equal(eh->ether_dhost, ie->arpcom.ac_enaddr)) |
| 1106 | return (1); |
| 1107 | |
| 1108 | /* Must have IFF_ALLMULTI but not IFF_PROMISC set. The chip is |
| 1109 | actually in promiscuous mode, so discard unicast packets. */ |
| 1110 | return((eh->ether_dhost[0] & 1) != 0); |
| 1111 | } |
| 1112 | |
| 1113 | /* |
| 1114 | * We want to isolate the bits that have meaning... This assumes that |
| 1115 | * IE_RBUF_SIZE is an even power of two. If somehow the act_len exceeds |
| 1116 | * the size of the buffer, then we are screwed anyway. |
| 1117 | */ |
| 1118 | static __inline int |
| 1119 | ie_buflen(struct ie_softc * ie, int head) |
| 1120 | { |
| 1121 | return (ie->rbuffs[head]->ie_rbd_actual |
| 1122 | & (IE_RBUF_SIZE | (IE_RBUF_SIZE - 1))); |
| 1123 | } |
| 1124 | |
| 1125 | static __inline int |
| 1126 | ie_packet_len(int unit, struct ie_softc * ie) |
| 1127 | { |
| 1128 | int i; |
| 1129 | int head = ie->rbhead; |
| 1130 | int acc = 0; |
| 1131 | |
| 1132 | do { |
| 1133 | if (!(ie->rbuffs[ie->rbhead]->ie_rbd_actual & IE_RBD_USED)) { |
| 1134 | #ifdef DEBUG |
| 1135 | print_rbd(ie->rbuffs[ie->rbhead]); |
| 1136 | #endif |
| 1137 | log(LOG_ERR, |
| 1138 | "ie%d: receive descriptors out of sync at %d\n", |
| 1139 | unit, ie->rbhead); |
| 1140 | iereset(unit); |
| 1141 | return (-1); |
| 1142 | } |
| 1143 | i = ie->rbuffs[head]->ie_rbd_actual & IE_RBD_LAST; |
| 1144 | |
| 1145 | acc += ie_buflen(ie, head); |
| 1146 | head = (head + 1) % ie->nrxbufs; |
| 1147 | } while (!i); |
| 1148 | |
| 1149 | return (acc); |
| 1150 | } |
| 1151 | |
| 1152 | /* |
| 1153 | * Read data off the interface, and turn it into an mbuf chain. |
| 1154 | * |
| 1155 | * This code is DRAMATICALLY different from the previous version; this |
| 1156 | * version tries to allocate the entire mbuf chain up front, given the |
| 1157 | * length of the data available. This enables us to allocate mbuf |
| 1158 | * clusters in many situations where before we would have had a long |
| 1159 | * chain of partially-full mbufs. This should help to speed up the |
| 1160 | * operation considerably. (Provided that it works, of course.) |
| 1161 | */ |
| 1162 | static __inline int |
| 1163 | ieget(int unit, struct ie_softc *ie, struct mbuf **mp) |
| 1164 | { |
| 1165 | struct mbuf *m, *top, **mymp; |
| 1166 | struct ether_header eh; |
| 1167 | int i; |
| 1168 | int offset; |
| 1169 | int totlen, resid; |
| 1170 | int thismboff; |
| 1171 | int head; |
| 1172 | |
| 1173 | totlen = ie_packet_len(unit, ie); |
| 1174 | if (totlen <= 0) |
| 1175 | return (-1); |
| 1176 | |
| 1177 | i = ie->rbhead; |
| 1178 | |
| 1179 | /* |
| 1180 | * Snarf the Ethernet header. |
| 1181 | */ |
| 1182 | bcopy((v_caddr_t) ie->cbuffs[i], (caddr_t) &eh, sizeof eh); |
| 1183 | /* ignore cast-qual warning here */ |
| 1184 | |
| 1185 | /* |
| 1186 | * As quickly as possible, check if this packet is for us. If not, |
| 1187 | * don't waste a single cycle copying the rest of the packet in. |
| 1188 | * This is only a consideration when FILTER is defined; i.e., when |
| 1189 | * we are either running BPF or doing multicasting. |
| 1190 | */ |
| 1191 | if (!check_eh(ie, &eh)) { |
| 1192 | ie_drop_packet_buffer(unit, ie); |
| 1193 | ie->arpcom.ac_if.if_ierrors--; /* just this case, it's not an |
| 1194 | * error |
| 1195 | */ |
| 1196 | return (-1); |
| 1197 | } |
| 1198 | offset = 0; |
| 1199 | |
| 1200 | MGETHDR(*mp, MB_DONTWAIT, MT_DATA); |
| 1201 | if (!*mp) { |
| 1202 | ie_drop_packet_buffer(unit, ie); |
| 1203 | return (-1); |
| 1204 | } |
| 1205 | m = *mp; |
| 1206 | m->m_len = MHLEN; |
| 1207 | resid = m->m_pkthdr.len = totlen; |
| 1208 | top = 0; |
| 1209 | mymp = ⊤ |
| 1210 | |
| 1211 | /* |
| 1212 | * This loop goes through and allocates mbufs for all the data we |
| 1213 | * will be copying in. It does not actually do the copying yet. |
| 1214 | */ |
| 1215 | do { /* while(resid > 0) */ |
| 1216 | /* |
| 1217 | * Try to allocate an mbuf to hold the data that we have. |
| 1218 | * If we already allocated one, just get another one and |
| 1219 | * stick it on the end (eventually). If we don't already |
| 1220 | * have one, try to allocate an mbuf cluster big enough to |
| 1221 | * hold the whole packet, if we think it's reasonable, or a |
| 1222 | * single mbuf which may or may not be big enough. Got that? |
| 1223 | */ |
| 1224 | if (top) { |
| 1225 | MGET(m, MB_DONTWAIT, MT_DATA); |
| 1226 | if (!m) { |
| 1227 | m_freem(top); |
| 1228 | ie_drop_packet_buffer(unit, ie); |
| 1229 | return (-1); |
| 1230 | } |
| 1231 | m->m_len = MLEN; |
| 1232 | } |
| 1233 | if (resid >= MINCLSIZE) { |
| 1234 | MCLGET(m, MB_DONTWAIT); |
| 1235 | if (m->m_flags & M_EXT) |
| 1236 | m->m_len = min(resid, MCLBYTES); |
| 1237 | } else { |
| 1238 | if (resid < m->m_len) { |
| 1239 | if (!top && resid + max_linkhdr <= m->m_len) |
| 1240 | m->m_data += max_linkhdr; |
| 1241 | m->m_len = resid; |
| 1242 | } |
| 1243 | } |
| 1244 | resid -= m->m_len; |
| 1245 | *mymp = m; |
| 1246 | mymp = &m->m_next; |
| 1247 | } while (resid > 0); |
| 1248 | |
| 1249 | resid = totlen; |
| 1250 | m = top; |
| 1251 | thismboff = 0; |
| 1252 | head = ie->rbhead; |
| 1253 | |
| 1254 | /* |
| 1255 | * Now we take the mbuf chain (hopefully only one mbuf most of the |
| 1256 | * time) and stuff the data into it. There are no possible failures |
| 1257 | * at or after this point. |
| 1258 | */ |
| 1259 | while (resid > 0) { /* while there's stuff left */ |
| 1260 | int thislen = ie_buflen(ie, head) - offset; |
| 1261 | |
| 1262 | /* |
| 1263 | * If too much data for the current mbuf, then fill the |
| 1264 | * current one up, go to the next one, and try again. |
| 1265 | */ |
| 1266 | if (thislen > m->m_len - thismboff) { |
| 1267 | int newlen = m->m_len - thismboff; |
| 1268 | |
| 1269 | bcopy((v_caddr_t) (ie->cbuffs[head] + offset), |
| 1270 | mtod(m, v_caddr_t) +thismboff, (unsigned) newlen); |
| 1271 | /* ignore cast-qual warning */ |
| 1272 | m = m->m_next; |
| 1273 | thismboff = 0; /* new mbuf, so no offset */ |
| 1274 | offset += newlen; /* we are now this far into |
| 1275 | * the packet */ |
| 1276 | resid -= newlen; /* so there is this much left |
| 1277 | * to get */ |
| 1278 | continue; |
| 1279 | } |
| 1280 | /* |
| 1281 | * If there is more than enough space in the mbuf to hold |
| 1282 | * the contents of this buffer, copy everything in, advance |
| 1283 | * pointers, and so on. |
| 1284 | */ |
| 1285 | if (thislen < m->m_len - thismboff) { |
| 1286 | bcopy((v_caddr_t) (ie->cbuffs[head] + offset), |
| 1287 | mtod(m, caddr_t) +thismboff, (unsigned) thislen); |
| 1288 | thismboff += thislen; /* we are this far into the |
| 1289 | * mbuf */ |
| 1290 | resid -= thislen; /* and this much is left */ |
| 1291 | goto nextbuf; |
| 1292 | } |
| 1293 | /* |
| 1294 | * Otherwise, there is exactly enough space to put this |
| 1295 | * buffer's contents into the current mbuf. Do the |
| 1296 | * combination of the above actions. |
| 1297 | */ |
| 1298 | bcopy((v_caddr_t) (ie->cbuffs[head] + offset), |
| 1299 | mtod(m, caddr_t) + thismboff, (unsigned) thislen); |
| 1300 | m = m->m_next; |
| 1301 | thismboff = 0; /* new mbuf, start at the beginning */ |
| 1302 | resid -= thislen; /* and we are this far through */ |
| 1303 | |
| 1304 | /* |
| 1305 | * Advance all the pointers. We can get here from either of |
| 1306 | * the last two cases, but never the first. |
| 1307 | */ |
| 1308 | nextbuf: |
| 1309 | offset = 0; |
| 1310 | ie->rbuffs[head]->ie_rbd_actual = 0; |
| 1311 | ie->rbuffs[head]->ie_rbd_length |= IE_RBD_LAST; |
| 1312 | ie->rbhead = head = (head + 1) % ie->nrxbufs; |
| 1313 | ie->rbuffs[ie->rbtail]->ie_rbd_length &= ~IE_RBD_LAST; |
| 1314 | ie->rbtail = (ie->rbtail + 1) % ie->nrxbufs; |
| 1315 | } |
| 1316 | |
| 1317 | /* |
| 1318 | * Unless something changed strangely while we were doing the copy, |
| 1319 | * we have now copied everything in from the shared memory. This |
| 1320 | * means that we are done. |
| 1321 | */ |
| 1322 | return (0); |
| 1323 | } |
| 1324 | |
| 1325 | /* |
| 1326 | * Read frame NUM from unit UNIT (pre-cached as IE). |
| 1327 | * |
| 1328 | * This routine reads the RFD at NUM, and copies in the buffers from |
| 1329 | * the list of RBD, then rotates the RBD and RFD lists so that the receiver |
| 1330 | * doesn't start complaining. Trailers are DROPPED---there's no point |
| 1331 | * in wasting time on confusing code to deal with them. Hopefully, |
| 1332 | * this machine will never ARP for trailers anyway. |
| 1333 | */ |
| 1334 | static void |
| 1335 | ie_readframe(int unit, struct ie_softc *ie, int num/* frame number to read */) |
| 1336 | { |
| 1337 | struct ie_recv_frame_desc rfd; |
| 1338 | struct mbuf *m = NULL; |
| 1339 | |
| 1340 | bcopy((v_caddr_t) (ie->rframes[num]), &rfd, |
| 1341 | sizeof(struct ie_recv_frame_desc)); |
| 1342 | |
| 1343 | /* |
| 1344 | * Immediately advance the RFD list, since we we have copied ours |
| 1345 | * now. |
| 1346 | */ |
| 1347 | ie->rframes[num]->ie_fd_status = 0; |
| 1348 | ie->rframes[num]->ie_fd_last |= IE_FD_LAST; |
| 1349 | ie->rframes[ie->rftail]->ie_fd_last &= ~IE_FD_LAST; |
| 1350 | ie->rftail = (ie->rftail + 1) % ie->nframes; |
| 1351 | ie->rfhead = (ie->rfhead + 1) % ie->nframes; |
| 1352 | |
| 1353 | if (rfd.ie_fd_status & IE_FD_OK) { |
| 1354 | if (ieget(unit, ie, &m)) { |
| 1355 | ie->arpcom.ac_if.if_ierrors++; /* this counts as an |
| 1356 | * error */ |
| 1357 | return; |
| 1358 | } |
| 1359 | } |
| 1360 | |
| 1361 | if (!m) |
| 1362 | return; |
| 1363 | |
| 1364 | /* |
| 1365 | * Finally pass this packet up to higher layers. |
| 1366 | */ |
| 1367 | ie->arpcom.ac_if.if_input(&ie->arpcom.ac_if, m); |
| 1368 | } |
| 1369 | |
| 1370 | static void |
| 1371 | ie_drop_packet_buffer(int unit, struct ie_softc * ie) |
| 1372 | { |
| 1373 | int i; |
| 1374 | |
| 1375 | do { |
| 1376 | /* |
| 1377 | * This means we are somehow out of sync. So, we reset the |
| 1378 | * adapter. |
| 1379 | */ |
| 1380 | if (!(ie->rbuffs[ie->rbhead]->ie_rbd_actual & IE_RBD_USED)) { |
| 1381 | #ifdef DEBUG |
| 1382 | print_rbd(ie->rbuffs[ie->rbhead]); |
| 1383 | #endif |
| 1384 | log(LOG_ERR, "ie%d: receive descriptors out of sync at %d\n", |
| 1385 | unit, ie->rbhead); |
| 1386 | iereset(unit); |
| 1387 | return; |
| 1388 | } |
| 1389 | i = ie->rbuffs[ie->rbhead]->ie_rbd_actual & IE_RBD_LAST; |
| 1390 | |
| 1391 | ie->rbuffs[ie->rbhead]->ie_rbd_length |= IE_RBD_LAST; |
| 1392 | ie->rbuffs[ie->rbhead]->ie_rbd_actual = 0; |
| 1393 | ie->rbhead = (ie->rbhead + 1) % ie->nrxbufs; |
| 1394 | ie->rbuffs[ie->rbtail]->ie_rbd_length &= ~IE_RBD_LAST; |
| 1395 | ie->rbtail = (ie->rbtail + 1) % ie->nrxbufs; |
| 1396 | } while (!i); |
| 1397 | } |
| 1398 | |
| 1399 | |
| 1400 | /* |
| 1401 | * Start transmission on an interface. |
| 1402 | */ |
| 1403 | static void |
| 1404 | iestart(struct ifnet *ifp) |
| 1405 | { |
| 1406 | struct ie_softc *ie = ifp->if_softc; |
| 1407 | struct mbuf *m0, *m; |
| 1408 | volatile unsigned char *buffer; |
| 1409 | u_short len; |
| 1410 | |
| 1411 | /* |
| 1412 | * This is not really volatile, in this routine, but it makes gcc |
| 1413 | * happy. |
| 1414 | */ |
| 1415 | volatile u_short *bptr = &ie->scb->ie_command_list; |
| 1416 | |
| 1417 | if (!(ifp->if_flags & IFF_RUNNING)) |
| 1418 | return; |
| 1419 | if (ifp->if_flags & IFF_OACTIVE) |
| 1420 | return; |
| 1421 | |
| 1422 | do { |
| 1423 | m = ifq_dequeue(&ie->arpcom.ac_if.if_snd, NULL); |
| 1424 | if (m == NULL) |
| 1425 | break; |
| 1426 | |
| 1427 | buffer = ie->xmit_cbuffs[ie->xmit_count]; |
| 1428 | len = 0; |
| 1429 | |
| 1430 | for (m0 = m; m && len < IE_BUF_LEN; m = m->m_next) { |
| 1431 | bcopy(mtod(m, caddr_t), buffer, m->m_len); |
| 1432 | buffer += m->m_len; |
| 1433 | len += m->m_len; |
| 1434 | } |
| 1435 | |
| 1436 | m_freem(m0); |
| 1437 | len = max(len, ETHER_MIN_LEN); |
| 1438 | |
| 1439 | /* |
| 1440 | * See if bpf is listening on this interface, let it see the |
| 1441 | * packet before we commit it to the wire. |
| 1442 | */ |
| 1443 | BPF_TAP(&ie->arpcom.ac_if, |
| 1444 | __DEVOLATILE(u_char *, ie->xmit_cbuffs[ie->xmit_count]), |
| 1445 | len); |
| 1446 | |
| 1447 | ie->xmit_buffs[ie->xmit_count]->ie_xmit_flags = |
| 1448 | IE_XMIT_LAST|len; |
| 1449 | ie->xmit_buffs[ie->xmit_count]->ie_xmit_next = 0xffff; |
| 1450 | ie->xmit_buffs[ie->xmit_count]->ie_xmit_buf = |
| 1451 | MK_24(ie->iomem, ie->xmit_cbuffs[ie->xmit_count]); |
| 1452 | |
| 1453 | ie->xmit_cmds[ie->xmit_count]->com.ie_cmd_cmd = IE_CMD_XMIT; |
| 1454 | ie->xmit_cmds[ie->xmit_count]->ie_xmit_status = 0; |
| 1455 | ie->xmit_cmds[ie->xmit_count]->ie_xmit_desc = |
| 1456 | MK_16(ie->iomem, ie->xmit_buffs[ie->xmit_count]); |
| 1457 | |
| 1458 | *bptr = MK_16(ie->iomem, ie->xmit_cmds[ie->xmit_count]); |
| 1459 | bptr = &ie->xmit_cmds[ie->xmit_count]->com.ie_cmd_link; |
| 1460 | ie->xmit_count++; |
| 1461 | } while (ie->xmit_count < ie->ntxbufs); |
| 1462 | |
| 1463 | /* |
| 1464 | * If we queued up anything for transmission, send it. |
| 1465 | */ |
| 1466 | if (ie->xmit_count) { |
| 1467 | ie->xmit_cmds[ie->xmit_count - 1]->com.ie_cmd_cmd |= |
| 1468 | IE_CMD_LAST | IE_CMD_INTR; |
| 1469 | |
| 1470 | /* |
| 1471 | * By passing the command pointer as a null, we tell |
| 1472 | * command_and_wait() to pretend that this isn't an action |
| 1473 | * command. I wish I understood what was happening here. |
| 1474 | */ |
| 1475 | command_and_wait(ifp->if_dunit, IE_CU_START, 0, 0); |
| 1476 | ifp->if_flags |= IFF_OACTIVE; |
| 1477 | } |
| 1478 | return; |
| 1479 | } |
| 1480 | |
| 1481 | /* |
| 1482 | * Check to see if there's an 82586 out there. |
| 1483 | */ |
| 1484 | static int |
| 1485 | check_ie_present(int unit, caddr_t where, unsigned size) |
| 1486 | { |
| 1487 | volatile struct ie_sys_conf_ptr *scp; |
| 1488 | volatile struct ie_int_sys_conf_ptr *iscp; |
| 1489 | volatile struct ie_sys_ctl_block *scb; |
| 1490 | u_long realbase; |
| 1491 | |
| 1492 | realbase = (uintptr_t) where + size - (1 << 24); |
| 1493 | |
| 1494 | scp = (volatile struct ie_sys_conf_ptr *) (uintptr_t) |
| 1495 | (realbase + IE_SCP_ADDR); |
| 1496 | bzero((volatile char *) scp, sizeof *scp); |
| 1497 | |
| 1498 | /* |
| 1499 | * First we put the ISCP at the bottom of memory; this tests to make |
| 1500 | * sure that our idea of the size of memory is the same as the |
| 1501 | * controller's. This is NOT where the ISCP will be in normal |
| 1502 | * operation. |
| 1503 | */ |
| 1504 | iscp = (volatile struct ie_int_sys_conf_ptr *) where; |
| 1505 | bzero((volatile char *)iscp, sizeof *iscp); |
| 1506 | |
| 1507 | scb = (volatile struct ie_sys_ctl_block *) where; |
| 1508 | bzero((volatile char *)scb, sizeof *scb); |
| 1509 | |
| 1510 | scp->ie_bus_use = ie_softc[unit].bus_use; /* 8-bit or 16-bit */ |
| 1511 | scp->ie_iscp_ptr = (caddr_t) (uintptr_t) |
| 1512 | ((volatile char *) iscp - (volatile char *) (uintptr_t) realbase); |
| 1513 | |
| 1514 | iscp->ie_busy = 1; |
| 1515 | iscp->ie_scb_offset = MK_16(realbase, scb) + 256; |
| 1516 | |
| 1517 | (*ie_softc[unit].ie_reset_586) (unit); |
| 1518 | (*ie_softc[unit].ie_chan_attn) (unit); |
| 1519 | |
| 1520 | DELAY(100); /* wait a while... */ |
| 1521 | |
| 1522 | if (iscp->ie_busy) { |
| 1523 | return (0); |
| 1524 | } |
| 1525 | /* |
| 1526 | * Now relocate the ISCP to its real home, and reset the controller |
| 1527 | * again. |
| 1528 | */ |
| 1529 | iscp = (void *) Align((caddr_t) (uintptr_t) |
| 1530 | (realbase + IE_SCP_ADDR - |
| 1531 | sizeof(struct ie_int_sys_conf_ptr))); |
| 1532 | bzero((volatile char *) iscp, sizeof *iscp); /* ignore cast-qual */ |
| 1533 | |
| 1534 | scp->ie_iscp_ptr = (caddr_t) (uintptr_t) |
| 1535 | ((volatile char *) iscp - (volatile char *) (uintptr_t) realbase); |
| 1536 | |
| 1537 | iscp->ie_busy = 1; |
| 1538 | iscp->ie_scb_offset = MK_16(realbase, scb); |
| 1539 | |
| 1540 | (*ie_softc[unit].ie_reset_586) (unit); |
| 1541 | (*ie_softc[unit].ie_chan_attn) (unit); |
| 1542 | |
| 1543 | DELAY(100); |
| 1544 | |
| 1545 | if (iscp->ie_busy) { |
| 1546 | return (0); |
| 1547 | } |
| 1548 | ie_softc[unit].iosize = size; |
| 1549 | ie_softc[unit].iomem = (caddr_t) (uintptr_t) realbase; |
| 1550 | |
| 1551 | ie_softc[unit].iscp = iscp; |
| 1552 | ie_softc[unit].scb = scb; |
| 1553 | |
| 1554 | /* |
| 1555 | * Acknowledge any interrupts we may have caused... |
| 1556 | */ |
| 1557 | ie_ack(scb, IE_ST_WHENCE, unit, ie_softc[unit].ie_chan_attn); |
| 1558 | |
| 1559 | return (1); |
| 1560 | } |
| 1561 | |
| 1562 | /* |
| 1563 | * Divine the memory size of ie board UNIT. |
| 1564 | * Better hope there's nothing important hiding just below the ie card... |
| 1565 | */ |
| 1566 | static void |
| 1567 | find_ie_mem_size(int unit) |
| 1568 | { |
| 1569 | unsigned size; |
| 1570 | |
| 1571 | ie_softc[unit].iosize = 0; |
| 1572 | |
| 1573 | for (size = 65536; size >= 8192; size -= 8192) { |
| 1574 | if (check_ie_present(unit, ie_softc[unit].iomembot, size)) { |
| 1575 | return; |
| 1576 | } |
| 1577 | } |
| 1578 | |
| 1579 | return; |
| 1580 | } |
| 1581 | |
| 1582 | void |
| 1583 | el_reset_586(int unit) |
| 1584 | { |
| 1585 | outb(PORT + IE507_CTRL, EL_CTRL_RESET); |
| 1586 | DELAY(100); |
| 1587 | outb(PORT + IE507_CTRL, EL_CTRL_NORMAL); |
| 1588 | DELAY(100); |
| 1589 | } |
| 1590 | |
| 1591 | void |
| 1592 | sl_reset_586(int unit) |
| 1593 | { |
| 1594 | outb(PORT + IEATT_RESET, 0); |
| 1595 | } |
| 1596 | |
| 1597 | void |
| 1598 | ee16_reset_586(int unit) |
| 1599 | { |
| 1600 | outb(PORT + IEE16_ECTRL, IEE16_RESET_586); |
| 1601 | DELAY(100); |
| 1602 | outb(PORT + IEE16_ECTRL, 0); |
| 1603 | DELAY(100); |
| 1604 | } |
| 1605 | |
| 1606 | void |
| 1607 | el_chan_attn(int unit) |
| 1608 | { |
| 1609 | outb(PORT + IE507_ATTN, 1); |
| 1610 | } |
| 1611 | |
| 1612 | void |
| 1613 | sl_chan_attn(int unit) |
| 1614 | { |
| 1615 | outb(PORT + IEATT_ATTN, 0); |
| 1616 | } |
| 1617 | |
| 1618 | void |
| 1619 | ee16_chan_attn(int unit) |
| 1620 | { |
| 1621 | outb(PORT + IEE16_ATTN, 0); |
| 1622 | } |
| 1623 | |
| 1624 | u_short |
| 1625 | ee16_read_eeprom(struct ie_softc *sc, int location) |
| 1626 | { |
| 1627 | int ectrl, edata; |
| 1628 | |
| 1629 | ectrl = inb(sc->port + IEE16_ECTRL); |
| 1630 | ectrl &= IEE16_ECTRL_MASK; |
| 1631 | ectrl |= IEE16_ECTRL_EECS; |
| 1632 | outb(sc->port + IEE16_ECTRL, ectrl); |
| 1633 | |
| 1634 | ee16_eeprom_outbits(sc, IEE16_EEPROM_READ, IEE16_EEPROM_OPSIZE1); |
| 1635 | ee16_eeprom_outbits(sc, location, IEE16_EEPROM_ADDR_SIZE); |
| 1636 | edata = ee16_eeprom_inbits(sc); |
| 1637 | ectrl = inb(sc->port + IEE16_ECTRL); |
| 1638 | ectrl &= ~(IEE16_RESET_ASIC | IEE16_ECTRL_EEDI | IEE16_ECTRL_EECS); |
| 1639 | outb(sc->port + IEE16_ECTRL, ectrl); |
| 1640 | ee16_eeprom_clock(sc, 1); |
| 1641 | ee16_eeprom_clock(sc, 0); |
| 1642 | return edata; |
| 1643 | } |
| 1644 | |
| 1645 | void |
| 1646 | ee16_eeprom_outbits(struct ie_softc *sc, int edata, int count) |
| 1647 | { |
| 1648 | int ectrl, i; |
| 1649 | |
| 1650 | ectrl = inb(sc->port + IEE16_ECTRL); |
| 1651 | ectrl &= ~IEE16_RESET_ASIC; |
| 1652 | for (i = count - 1; i >= 0; i--) { |
| 1653 | ectrl &= ~IEE16_ECTRL_EEDI; |
| 1654 | if (edata & (1 << i)) { |
| 1655 | ectrl |= IEE16_ECTRL_EEDI; |
| 1656 | } |
| 1657 | outb(sc->port + IEE16_ECTRL, ectrl); |
| 1658 | DELAY(1); /* eeprom data must be setup for 0.4 uSec */ |
| 1659 | ee16_eeprom_clock(sc, 1); |
| 1660 | ee16_eeprom_clock(sc, 0); |
| 1661 | } |
| 1662 | ectrl &= ~IEE16_ECTRL_EEDI; |
| 1663 | outb(sc->port + IEE16_ECTRL, ectrl); |
| 1664 | DELAY(1); /* eeprom data must be held for 0.4 uSec */ |
| 1665 | } |
| 1666 | |
| 1667 | int |
| 1668 | ee16_eeprom_inbits(struct ie_softc *sc) |
| 1669 | { |
| 1670 | int ectrl, edata, i; |
| 1671 | |
| 1672 | ectrl = inb(sc->port + IEE16_ECTRL); |
| 1673 | ectrl &= ~IEE16_RESET_ASIC; |
| 1674 | for (edata = 0, i = 0; i < 16; i++) { |
| 1675 | edata = edata << 1; |
| 1676 | ee16_eeprom_clock(sc, 1); |
| 1677 | ectrl = inb(sc->port + IEE16_ECTRL); |
| 1678 | if (ectrl & IEE16_ECTRL_EEDO) { |
| 1679 | edata |= 1; |
| 1680 | } |
| 1681 | ee16_eeprom_clock(sc, 0); |
| 1682 | } |
| 1683 | return (edata); |
| 1684 | } |
| 1685 | |
| 1686 | void |
| 1687 | ee16_eeprom_clock(struct ie_softc *sc, int state) |
| 1688 | { |
| 1689 | int ectrl; |
| 1690 | |
| 1691 | ectrl = inb(sc->port + IEE16_ECTRL); |
| 1692 | ectrl &= ~(IEE16_RESET_ASIC | IEE16_ECTRL_EESK); |
| 1693 | if (state) { |
| 1694 | ectrl |= IEE16_ECTRL_EESK; |
| 1695 | } |
| 1696 | outb(sc->port + IEE16_ECTRL, ectrl); |
| 1697 | DELAY(9); /* EESK must be stable for 8.38 uSec */ |
| 1698 | } |
| 1699 | |
| 1700 | static __inline void |
| 1701 | ee16_interrupt_enable(struct ie_softc *sc) |
| 1702 | { |
| 1703 | DELAY(100); |
| 1704 | outb(sc->port + IEE16_IRQ, sc->irq_encoded | IEE16_IRQ_ENABLE); |
| 1705 | DELAY(100); |
| 1706 | } |
| 1707 | |
| 1708 | void |
| 1709 | sl_read_ether(int unit, unsigned char addr[6]) |
| 1710 | { |
| 1711 | int i; |
| 1712 | |
| 1713 | for (i = 0; i < 6; i++) |
| 1714 | addr[i] = inb(PORT + i); |
| 1715 | } |
| 1716 | |
| 1717 | |
| 1718 | static void |
| 1719 | iereset(int unit) |
| 1720 | { |
| 1721 | if (unit >= NIE) { |
| 1722 | return; |
| 1723 | } |
| 1724 | kprintf("ie%d: reset\n", unit); |
| 1725 | ie_softc[unit].arpcom.ac_if.if_flags &= ~IFF_UP; |
| 1726 | ieioctl(&ie_softc[unit].arpcom.ac_if, SIOCSIFFLAGS, 0, NULL); |
| 1727 | |
| 1728 | /* |
| 1729 | * Stop i82586 dead in its tracks. |
| 1730 | */ |
| 1731 | if (command_and_wait(unit, IE_RU_ABORT | IE_CU_ABORT, 0, 0)) |
| 1732 | kprintf("ie%d: abort commands timed out\n", unit); |
| 1733 | |
| 1734 | if (command_and_wait(unit, IE_RU_DISABLE | IE_CU_STOP, 0, 0)) |
| 1735 | kprintf("ie%d: disable commands timed out\n", unit); |
| 1736 | |
| 1737 | #ifdef notdef |
| 1738 | if (!check_ie_present(unit, ie_softc[unit].iomembot, |
| 1739 | e_softc[unit].iosize)) |
| 1740 | panic("ie disappeared!"); |
| 1741 | #endif |
| 1742 | |
| 1743 | ie_softc[unit].arpcom.ac_if.if_flags |= IFF_UP; |
| 1744 | ieioctl(&ie_softc[unit].arpcom.ac_if, SIOCSIFFLAGS, 0, NULL); |
| 1745 | } |
| 1746 | |
| 1747 | /* |
| 1748 | * Send a command to the controller and wait for it to either |
| 1749 | * complete or be accepted, depending on the command. If the |
| 1750 | * command pointer is null, then pretend that the command is |
| 1751 | * not an action command. If the command pointer is not null, |
| 1752 | * and the command is an action command, wait for |
| 1753 | * ((volatile struct ie_cmd_common *)pcmd)->ie_cmd_status & MASK |
| 1754 | * to become true. |
| 1755 | */ |
| 1756 | static int |
| 1757 | command_and_wait(int unit, int cmd, volatile void *pcmd, int mask) |
| 1758 | { |
| 1759 | volatile struct ie_cmd_common *cc = pcmd; |
| 1760 | |
| 1761 | ie_softc[unit].scb->ie_command = (u_short) cmd; |
| 1762 | |
| 1763 | if (IE_ACTION_COMMAND(cmd) && pcmd) { |
| 1764 | /* |
| 1765 | * According to the packet driver, the minimum timeout |
| 1766 | * should be .369 seconds. |
| 1767 | */ |
| 1768 | int timer = 370; |
| 1769 | |
| 1770 | (*ie_softc[unit].ie_chan_attn) (unit); |
| 1771 | |
| 1772 | /* |
| 1773 | * Now spin-lock waiting for status. This is not a very |
| 1774 | * nice thing to do, but I haven't figured out how, or |
| 1775 | * indeed if, we can put the process waiting for action to |
| 1776 | * sleep. (We may be getting called through some other |
| 1777 | * timeout running in the kernel.) |
| 1778 | */ |
| 1779 | while (--timer > 0) { |
| 1780 | if (cc->ie_cmd_status & mask) |
| 1781 | break; |
| 1782 | DELAY(1000); |
| 1783 | } |
| 1784 | if (timer == 0) |
| 1785 | return(1); |
| 1786 | else |
| 1787 | return(0); |
| 1788 | } else { |
| 1789 | |
| 1790 | /* |
| 1791 | * Otherwise, just wait for the command to be accepted. |
| 1792 | */ |
| 1793 | (*ie_softc[unit].ie_chan_attn) (unit); |
| 1794 | |
| 1795 | while (ie_softc[unit].scb->ie_command); /* spin lock */ |
| 1796 | |
| 1797 | return (0); |
| 1798 | } |
| 1799 | } |
| 1800 | |
| 1801 | /* |
| 1802 | * Run the time-domain reflectometer... |
| 1803 | */ |
| 1804 | static void |
| 1805 | run_tdr(int unit, volatile struct ie_tdr_cmd *cmd) |
| 1806 | { |
| 1807 | int result; |
| 1808 | |
| 1809 | cmd->com.ie_cmd_status = 0; |
| 1810 | cmd->com.ie_cmd_cmd = IE_CMD_TDR | IE_CMD_LAST; |
| 1811 | cmd->com.ie_cmd_link = 0xffff; |
| 1812 | cmd->ie_tdr_time = 0; |
| 1813 | |
| 1814 | ie_softc[unit].scb->ie_command_list = MK_16(MEM, cmd); |
| 1815 | cmd->ie_tdr_time = 0; |
| 1816 | |
| 1817 | if (command_and_wait(unit, IE_CU_START, cmd, IE_STAT_COMPL)) |
| 1818 | result = 0x2000; |
| 1819 | else |
| 1820 | result = cmd->ie_tdr_time; |
| 1821 | |
| 1822 | ie_ack(ie_softc[unit].scb, IE_ST_WHENCE, unit, |
| 1823 | ie_softc[unit].ie_chan_attn); |
| 1824 | |
| 1825 | if (result & IE_TDR_SUCCESS) |
| 1826 | return; |
| 1827 | |
| 1828 | if (result & IE_TDR_XCVR) { |
| 1829 | kprintf("ie%d: transceiver problem\n", unit); |
| 1830 | } else if (result & IE_TDR_OPEN) { |
| 1831 | kprintf("ie%d: TDR detected an open %d clocks away\n", unit, |
| 1832 | result & IE_TDR_TIME); |
| 1833 | } else if (result & IE_TDR_SHORT) { |
| 1834 | kprintf("ie%d: TDR detected a short %d clocks away\n", unit, |
| 1835 | result & IE_TDR_TIME); |
| 1836 | } else { |
| 1837 | kprintf("ie%d: TDR returned unknown status %x\n", unit, result); |
| 1838 | } |
| 1839 | } |
| 1840 | |
| 1841 | static void |
| 1842 | start_receiver(int unit) |
| 1843 | { |
| 1844 | ie_softc[unit].scb->ie_recv_list = MK_16(MEM, ie_softc[unit].rframes[0]); |
| 1845 | command_and_wait(unit, IE_RU_START, 0, 0); |
| 1846 | |
| 1847 | ie_ack(ie_softc[unit].scb, IE_ST_WHENCE, unit, ie_softc[unit].ie_chan_attn); |
| 1848 | } |
| 1849 | |
| 1850 | /* |
| 1851 | * Here is a helper routine for iernr() and ieinit(). This sets up |
| 1852 | * the RFA. |
| 1853 | */ |
| 1854 | static v_caddr_t |
| 1855 | setup_rfa(v_caddr_t ptr, struct ie_softc * ie) |
| 1856 | { |
| 1857 | volatile struct ie_recv_frame_desc *rfd = (volatile void *)ptr; |
| 1858 | volatile struct ie_recv_buf_desc *rbd; |
| 1859 | int i; |
| 1860 | int unit = ie - &ie_softc[0]; |
| 1861 | |
| 1862 | /* First lay them out */ |
| 1863 | for (i = 0; i < ie->nframes; i++) { |
| 1864 | ie->rframes[i] = rfd; |
| 1865 | bzero((volatile char *) rfd, sizeof *rfd); /* ignore cast-qual */ |
| 1866 | rfd++; |
| 1867 | } |
| 1868 | |
| 1869 | ptr = Alignvol(rfd); /* ignore cast-qual */ |
| 1870 | |
| 1871 | /* Now link them together */ |
| 1872 | for (i = 0; i < ie->nframes; i++) { |
| 1873 | ie->rframes[i]->ie_fd_next = |
| 1874 | MK_16(MEM, ie->rframes[(i + 1) % ie->nframes]); |
| 1875 | } |
| 1876 | |
| 1877 | /* Finally, set the EOL bit on the last one. */ |
| 1878 | ie->rframes[ie->nframes - 1]->ie_fd_last |= IE_FD_LAST; |
| 1879 | |
| 1880 | /* |
| 1881 | * Now lay out some buffers for the incoming frames. Note that we |
| 1882 | * set aside a bit of slop in each buffer, to make sure that we have |
| 1883 | * enough space to hold a single frame in every buffer. |
| 1884 | */ |
| 1885 | rbd = (volatile void *) ptr; |
| 1886 | |
| 1887 | for (i = 0; i < ie->nrxbufs; i++) { |
| 1888 | ie->rbuffs[i] = rbd; |
| 1889 | bzero((volatile char *)rbd, sizeof *rbd); |
| 1890 | ptr = Alignvol(ptr + sizeof *rbd); |
| 1891 | rbd->ie_rbd_length = IE_RBUF_SIZE; |
| 1892 | rbd->ie_rbd_buffer = MK_24(MEM, ptr); |
| 1893 | ie->cbuffs[i] = (volatile void *) ptr; |
| 1894 | ptr += IE_RBUF_SIZE; |
| 1895 | rbd = (volatile void *) ptr; |
| 1896 | } |
| 1897 | |
| 1898 | /* Now link them together */ |
| 1899 | for (i = 0; i < ie->nrxbufs; i++) { |
| 1900 | ie->rbuffs[i]->ie_rbd_next = |
| 1901 | MK_16(MEM, ie->rbuffs[(i + 1) % ie->nrxbufs]); |
| 1902 | } |
| 1903 | |
| 1904 | /* Tag EOF on the last one */ |
| 1905 | ie->rbuffs[ie->nrxbufs - 1]->ie_rbd_length |= IE_RBD_LAST; |
| 1906 | |
| 1907 | /* |
| 1908 | * We use the head and tail pointers on receive to keep track of the |
| 1909 | * order in which RFDs and RBDs are used. |
| 1910 | */ |
| 1911 | ie->rfhead = 0; |
| 1912 | ie->rftail = ie->nframes - 1; |
| 1913 | ie->rbhead = 0; |
| 1914 | ie->rbtail = ie->nrxbufs - 1; |
| 1915 | |
| 1916 | ie->scb->ie_recv_list = MK_16(MEM, ie->rframes[0]); |
| 1917 | ie->rframes[0]->ie_fd_buf_desc = MK_16(MEM, ie->rbuffs[0]); |
| 1918 | |
| 1919 | ptr = Alignvol(ptr); |
| 1920 | return (ptr); |
| 1921 | } |
| 1922 | |
| 1923 | /* |
| 1924 | * Run the multicast setup command. |
| 1925 | */ |
| 1926 | static int |
| 1927 | mc_setup(int unit, v_caddr_t ptr, |
| 1928 | volatile struct ie_sys_ctl_block * scb) |
| 1929 | { |
| 1930 | struct ie_softc *ie = &ie_softc[unit]; |
| 1931 | volatile struct ie_mcast_cmd *cmd = (volatile void *) ptr; |
| 1932 | |
| 1933 | cmd->com.ie_cmd_status = 0; |
| 1934 | cmd->com.ie_cmd_cmd = IE_CMD_MCAST | IE_CMD_LAST; |
| 1935 | cmd->com.ie_cmd_link = 0xffff; |
| 1936 | |
| 1937 | /* ignore cast-qual */ |
| 1938 | bcopy((v_caddr_t) ie->mcast_addrs, (v_caddr_t) cmd->ie_mcast_addrs, |
| 1939 | ie->mcast_count * sizeof *ie->mcast_addrs); |
| 1940 | |
| 1941 | cmd->ie_mcast_bytes = ie->mcast_count * 6; /* grrr... */ |
| 1942 | |
| 1943 | scb->ie_command_list = MK_16(MEM, cmd); |
| 1944 | if (command_and_wait(unit, IE_CU_START, cmd, IE_STAT_COMPL) |
| 1945 | || !(cmd->com.ie_cmd_status & IE_STAT_OK)) { |
| 1946 | kprintf("ie%d: multicast address setup command failed\n", unit); |
| 1947 | return (0); |
| 1948 | } |
| 1949 | return (1); |
| 1950 | } |
| 1951 | |
| 1952 | /* |
| 1953 | * This routine takes the environment generated by check_ie_present() |
| 1954 | * and adds to it all the other structures we need to operate the adapter. |
| 1955 | * This includes executing the CONFIGURE, IA-SETUP, and MC-SETUP commands, |
| 1956 | * starting the receiver unit, and clearing interrupts. |
| 1957 | */ |
| 1958 | static void |
| 1959 | ieinit(void *xsc) |
| 1960 | { |
| 1961 | struct ie_softc *ie = xsc; |
| 1962 | volatile struct ie_sys_ctl_block *scb = ie->scb; |
| 1963 | v_caddr_t ptr; |
| 1964 | int i; |
| 1965 | int unit = ie->unit; |
| 1966 | |
| 1967 | ptr = Alignvol((volatile char *) scb + sizeof *scb); |
| 1968 | |
| 1969 | /* |
| 1970 | * Send the configure command first. |
| 1971 | */ |
| 1972 | { |
| 1973 | volatile struct ie_config_cmd *cmd = (volatile void *) ptr; |
| 1974 | |
| 1975 | ie_setup_config(cmd, ie->promisc, |
| 1976 | ie->hard_type == IE_STARLAN10); |
| 1977 | cmd->com.ie_cmd_status = 0; |
| 1978 | cmd->com.ie_cmd_cmd = IE_CMD_CONFIG | IE_CMD_LAST; |
| 1979 | cmd->com.ie_cmd_link = 0xffff; |
| 1980 | |
| 1981 | scb->ie_command_list = MK_16(MEM, cmd); |
| 1982 | |
| 1983 | if (command_and_wait(unit, IE_CU_START, cmd, IE_STAT_COMPL) |
| 1984 | || !(cmd->com.ie_cmd_status & IE_STAT_OK)) { |
| 1985 | kprintf("ie%d: configure command failed\n", unit); |
| 1986 | return; |
| 1987 | } |
| 1988 | } |
| 1989 | /* |
| 1990 | * Now send the Individual Address Setup command. |
| 1991 | */ |
| 1992 | { |
| 1993 | volatile struct ie_iasetup_cmd *cmd = (volatile void *) ptr; |
| 1994 | |
| 1995 | cmd->com.ie_cmd_status = 0; |
| 1996 | cmd->com.ie_cmd_cmd = IE_CMD_IASETUP | IE_CMD_LAST; |
| 1997 | cmd->com.ie_cmd_link = 0xffff; |
| 1998 | |
| 1999 | bcopy((volatile char *)ie_softc[unit].arpcom.ac_enaddr, |
| 2000 | (volatile char *)&cmd->ie_address, sizeof cmd->ie_address); |
| 2001 | scb->ie_command_list = MK_16(MEM, cmd); |
| 2002 | if (command_and_wait(unit, IE_CU_START, cmd, IE_STAT_COMPL) |
| 2003 | || !(cmd->com.ie_cmd_status & IE_STAT_OK)) { |
| 2004 | kprintf("ie%d: individual address " |
| 2005 | "setup command failed\n", unit); |
| 2006 | return; |
| 2007 | } |
| 2008 | } |
| 2009 | |
| 2010 | /* |
| 2011 | * Now run the time-domain reflectometer. |
| 2012 | */ |
| 2013 | run_tdr(unit, (volatile void *) ptr); |
| 2014 | |
| 2015 | /* |
| 2016 | * Acknowledge any interrupts we have generated thus far. |
| 2017 | */ |
| 2018 | ie_ack(ie->scb, IE_ST_WHENCE, unit, ie->ie_chan_attn); |
| 2019 | |
| 2020 | /* |
| 2021 | * Set up the RFA. |
| 2022 | */ |
| 2023 | ptr = setup_rfa(ptr, ie); |
| 2024 | |
| 2025 | /* |
| 2026 | * Finally, the transmit command and buffer are the last little bit |
| 2027 | * of work. |
| 2028 | */ |
| 2029 | |
| 2030 | /* transmit command buffers */ |
| 2031 | for (i = 0; i < ie->ntxbufs; i++) { |
| 2032 | ie->xmit_cmds[i] = (volatile void *) ptr; |
| 2033 | ptr += sizeof *ie->xmit_cmds[i]; |
| 2034 | ptr = Alignvol(ptr); |
| 2035 | ie->xmit_buffs[i] = (volatile void *)ptr; |
| 2036 | ptr += sizeof *ie->xmit_buffs[i]; |
| 2037 | ptr = Alignvol(ptr); |
| 2038 | } |
| 2039 | |
| 2040 | /* transmit buffers */ |
| 2041 | for (i = 0; i < ie->ntxbufs - 1; i++) { |
| 2042 | ie->xmit_cbuffs[i] = (volatile void *)ptr; |
| 2043 | ptr += IE_BUF_LEN; |
| 2044 | ptr = Alignvol(ptr); |
| 2045 | } |
| 2046 | ie->xmit_cbuffs[ie->ntxbufs - 1] = (volatile void *) ptr; |
| 2047 | |
| 2048 | for (i = 1; i < ie->ntxbufs; i++) { |
| 2049 | bzero((v_caddr_t) ie->xmit_cmds[i], sizeof *ie->xmit_cmds[i]); |
| 2050 | bzero((v_caddr_t) ie->xmit_buffs[i], sizeof *ie->xmit_buffs[i]); |
| 2051 | } |
| 2052 | |
| 2053 | /* |
| 2054 | * This must be coordinated with iestart() and ietint(). |
| 2055 | */ |
| 2056 | ie->xmit_cmds[0]->ie_xmit_status = IE_STAT_COMPL; |
| 2057 | |
| 2058 | /* take the ee16 out of loopback */ |
| 2059 | if (ie->hard_type == IE_EE16) { |
| 2060 | u_int8_t bart_config; |
| 2061 | |
| 2062 | bart_config = inb(PORT + IEE16_CONFIG); |
| 2063 | bart_config &= ~IEE16_BART_LOOPBACK; |
| 2064 | /* inb doesn't get bit! */ |
| 2065 | bart_config |= IEE16_BART_MCS16_TEST; |
| 2066 | outb(PORT + IEE16_CONFIG, bart_config); |
| 2067 | ee16_interrupt_enable(ie); |
| 2068 | ee16_chan_attn(unit); |
| 2069 | } |
| 2070 | ie->arpcom.ac_if.if_flags |= IFF_RUNNING; /* tell higher levels |
| 2071 | * we're here */ |
| 2072 | start_receiver(unit); |
| 2073 | } |
| 2074 | |
| 2075 | static void |
| 2076 | ie_stop(int unit) |
| 2077 | { |
| 2078 | command_and_wait(unit, IE_RU_DISABLE, 0, 0); |
| 2079 | } |
| 2080 | |
| 2081 | static int |
| 2082 | ieioctl(struct ifnet *ifp, u_long command, caddr_t data, struct ucred *cr) |
| 2083 | { |
| 2084 | int error = 0; |
| 2085 | |
| 2086 | switch (command) { |
| 2087 | case SIOCSIFFLAGS: |
| 2088 | /* |
| 2089 | * Note that this device doesn't have an "all multicast" |
| 2090 | * mode, so we must turn on promiscuous mode and do the |
| 2091 | * filtering manually. |
| 2092 | */ |
| 2093 | if ((ifp->if_flags & IFF_UP) == 0 && |
| 2094 | (ifp->if_flags & IFF_RUNNING)) { |
| 2095 | ifp->if_flags &= ~IFF_RUNNING; |
| 2096 | ie_stop(ifp->if_dunit); |
| 2097 | } else if ((ifp->if_flags & IFF_UP) && |
| 2098 | (ifp->if_flags & IFF_RUNNING) == 0) { |
| 2099 | ie_softc[ifp->if_dunit].promisc = |
| 2100 | ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI); |
| 2101 | ieinit(ifp->if_softc); |
| 2102 | } else if (ie_softc[ifp->if_dunit].promisc ^ |
| 2103 | (ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI))) { |
| 2104 | ie_softc[ifp->if_dunit].promisc = |
| 2105 | ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI); |
| 2106 | ieinit(ifp->if_softc); |
| 2107 | } |
| 2108 | break; |
| 2109 | |
| 2110 | case SIOCADDMULTI: |
| 2111 | case SIOCDELMULTI: |
| 2112 | /* |
| 2113 | * Update multicast listeners |
| 2114 | */ |
| 2115 | /* reset multicast filtering */ |
| 2116 | ie_mc_reset(ifp->if_dunit); |
| 2117 | error = 0; |
| 2118 | break; |
| 2119 | |
| 2120 | default: |
| 2121 | error = ether_ioctl(ifp, command, data); |
| 2122 | break; |
| 2123 | } |
| 2124 | return (error); |
| 2125 | } |
| 2126 | |
| 2127 | static void |
| 2128 | ie_mc_reset(int unit) |
| 2129 | { |
| 2130 | struct ie_softc *ie = &ie_softc[unit]; |
| 2131 | struct ifmultiaddr *ifma; |
| 2132 | |
| 2133 | /* |
| 2134 | * Step through the list of addresses. |
| 2135 | */ |
| 2136 | ie->mcast_count = 0; |
| 2137 | TAILQ_FOREACH(ifma, &ie->arpcom.ac_if.if_multiaddrs, ifma_link) { |
| 2138 | if (ifma->ifma_addr->sa_family != AF_LINK) |
| 2139 | continue; |
| 2140 | |
| 2141 | /* XXX - this is broken... */ |
| 2142 | if (ie->mcast_count >= MAXMCAST) { |
| 2143 | ie->arpcom.ac_if.if_flags |= IFF_ALLMULTI; |
| 2144 | ieioctl(&ie->arpcom.ac_if, SIOCSIFFLAGS, NULL, |
| 2145 | NULL); |
| 2146 | goto setflag; |
| 2147 | } |
| 2148 | bcopy(LLADDR((struct sockaddr_dl *) ifma->ifma_addr), |
| 2149 | &(ie->mcast_addrs[ie->mcast_count]), 6); |
| 2150 | ie->mcast_count++; |
| 2151 | } |
| 2152 | |
| 2153 | setflag: |
| 2154 | ie->want_mcsetup = 1; |
| 2155 | } |
| 2156 | |
| 2157 | |
| 2158 | #ifdef DEBUG |
| 2159 | static void |
| 2160 | print_rbd(volatile struct ie_recv_buf_desc * rbd) |
| 2161 | { |
| 2162 | kprintf("RBD at %p:\n" |
| 2163 | "actual %04x, next %04x, buffer %p\n" |
| 2164 | "length %04x, mbz %04x\n", |
| 2165 | (volatile void *) rbd, |
| 2166 | rbd->ie_rbd_actual, rbd->ie_rbd_next, |
| 2167 | (void *) rbd->ie_rbd_buffer, |
| 2168 | rbd->ie_rbd_length, rbd->mbz); |
| 2169 | } |
| 2170 | |
| 2171 | #endif /* DEBUG */ |