asc.c revision 1.1.2.2
1 1.1.2.2 bouyer /* $NetBSD: asc.c,v 1.1.2.2 2001/01/05 17:33:57 bouyer Exp $ */ 2 1.1.2.2 bouyer /* $OpenBSD: asc.c,v 1.9 1998/03/16 09:38:39 pefo Exp $ */ 3 1.1.2.2 bouyer /* NetBSD: asc.c,v 1.10 1994/12/05 19:11:12 dean Exp */ 4 1.1.2.2 bouyer 5 1.1.2.2 bouyer /*- 6 1.1.2.2 bouyer * Copyright (c) 1992, 1993 7 1.1.2.2 bouyer * The Regents of the University of California. All rights reserved. 8 1.1.2.2 bouyer * 9 1.1.2.2 bouyer * This code is derived from software contributed to Berkeley by 10 1.1.2.2 bouyer * Ralph Campbell and Rick Macklem. 11 1.1.2.2 bouyer * 12 1.1.2.2 bouyer * Redistribution and use in source and binary forms, with or without 13 1.1.2.2 bouyer * modification, are permitted provided that the following conditions 14 1.1.2.2 bouyer * are met: 15 1.1.2.2 bouyer * 1. Redistributions of source code must retain the above copyright 16 1.1.2.2 bouyer * notice, this list of conditions and the following disclaimer. 17 1.1.2.2 bouyer * 2. Redistributions in binary form must reproduce the above copyright 18 1.1.2.2 bouyer * notice, this list of conditions and the following disclaimer in the 19 1.1.2.2 bouyer * documentation and/or other materials provided with the distribution. 20 1.1.2.2 bouyer * 3. All advertising materials mentioning features or use of this software 21 1.1.2.2 bouyer * must display the following acknowledgement: 22 1.1.2.2 bouyer * This product includes software developed by the University of 23 1.1.2.2 bouyer * California, Berkeley and its contributors. 24 1.1.2.2 bouyer * 4. Neither the name of the University nor the names of its contributors 25 1.1.2.2 bouyer * may be used to endorse or promote products derived from this software 26 1.1.2.2 bouyer * without specific prior written permission. 27 1.1.2.2 bouyer * 28 1.1.2.2 bouyer * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 1.1.2.2 bouyer * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 1.1.2.2 bouyer * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 1.1.2.2 bouyer * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 1.1.2.2 bouyer * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 1.1.2.2 bouyer * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 1.1.2.2 bouyer * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 1.1.2.2 bouyer * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 1.1.2.2 bouyer * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 1.1.2.2 bouyer * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 1.1.2.2 bouyer * SUCH DAMAGE. 39 1.1.2.2 bouyer * 40 1.1.2.2 bouyer * @(#)asc.c 8.3 (Berkeley) 7/3/94 41 1.1.2.2 bouyer */ 42 1.1.2.2 bouyer 43 1.1.2.2 bouyer /* 44 1.1.2.2 bouyer * Mach Operating System 45 1.1.2.2 bouyer * Copyright (c) 1991,1990,1989 Carnegie Mellon University 46 1.1.2.2 bouyer * All Rights Reserved. 47 1.1.2.2 bouyer * 48 1.1.2.2 bouyer * Permission to use, copy, modify and distribute this software and its 49 1.1.2.2 bouyer * documentation is hereby granted, provided that both the copyright 50 1.1.2.2 bouyer * notice and this permission notice appear in all copies of the 51 1.1.2.2 bouyer * software, derivative works or modified versions, and any portions 52 1.1.2.2 bouyer * thereof, and that both notices appear in supporting documentation. 53 1.1.2.2 bouyer * 54 1.1.2.2 bouyer * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 55 1.1.2.2 bouyer * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 56 1.1.2.2 bouyer * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 57 1.1.2.2 bouyer * 58 1.1.2.2 bouyer * Carnegie Mellon requests users of this software to return to 59 1.1.2.2 bouyer * 60 1.1.2.2 bouyer * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 61 1.1.2.2 bouyer * School of Computer Science 62 1.1.2.2 bouyer * Carnegie Mellon University 63 1.1.2.2 bouyer * Pittsburgh PA 15213-3890 64 1.1.2.2 bouyer * 65 1.1.2.2 bouyer * any improvements or extensions that they make and grant Carnegie the 66 1.1.2.2 bouyer * rights to redistribute these changes. 67 1.1.2.2 bouyer */ 68 1.1.2.2 bouyer 69 1.1.2.2 bouyer /* 70 1.1.2.2 bouyer * HISTORY 71 1.1.2.2 bouyer * Log: scsi_53C94_hdw.c,v 72 1.1.2.2 bouyer * Revision 2.5 91/02/05 17:45:07 mrt 73 1.1.2.2 bouyer * Added author notices 74 1.1.2.2 bouyer * [91/02/04 11:18:43 mrt] 75 1.1.2.2 bouyer * 76 1.1.2.2 bouyer * Changed to use new Mach copyright 77 1.1.2.2 bouyer * [91/02/02 12:17:20 mrt] 78 1.1.2.2 bouyer * 79 1.1.2.2 bouyer * Revision 2.4 91/01/08 15:48:24 rpd 80 1.1.2.2 bouyer * Added continuation argument to thread_block. 81 1.1.2.2 bouyer * [90/12/27 rpd] 82 1.1.2.2 bouyer * 83 1.1.2.2 bouyer * Revision 2.3 90/12/05 23:34:48 af 84 1.1.2.2 bouyer * Recovered from pmax merge.. and from the destruction of a disk. 85 1.1.2.2 bouyer * [90/12/03 23:40:40 af] 86 1.1.2.2 bouyer * 87 1.1.2.2 bouyer * Revision 2.1.1.1 90/11/01 03:39:09 af 88 1.1.2.2 bouyer * Created, from the DEC specs: 89 1.1.2.2 bouyer * "PMAZ-AA TURBOchannel SCSI Module Functional Specification" 90 1.1.2.2 bouyer * Workstation Systems Engineering, Palo Alto, CA. Aug 27, 1990. 91 1.1.2.2 bouyer * And from the NCR data sheets 92 1.1.2.2 bouyer * "NCR 53C94, 53C95, 53C96 Advances SCSI Controller" 93 1.1.2.2 bouyer * [90/09/03 af] 94 1.1.2.2 bouyer */ 95 1.1.2.2 bouyer 96 1.1.2.2 bouyer /* 97 1.1.2.2 bouyer * File: scsi_53C94_hdw.h 98 1.1.2.2 bouyer * Author: Alessandro Forin, Carnegie Mellon University 99 1.1.2.2 bouyer * Date: 9/90 100 1.1.2.2 bouyer * 101 1.1.2.2 bouyer * Bottom layer of the SCSI driver: chip-dependent functions 102 1.1.2.2 bouyer * 103 1.1.2.2 bouyer * This file contains the code that is specific to the NCR 53C94 104 1.1.2.2 bouyer * SCSI chip (Host Bus Adapter in SCSI parlance): probing, start 105 1.1.2.2 bouyer * operation, and interrupt routine. 106 1.1.2.2 bouyer */ 107 1.1.2.2 bouyer 108 1.1.2.2 bouyer /* 109 1.1.2.2 bouyer * This layer works based on small simple 'scripts' that are installed 110 1.1.2.2 bouyer * at the start of the command and drive the chip to completion. 111 1.1.2.2 bouyer * The idea comes from the specs of the NCR 53C700 'script' processor. 112 1.1.2.2 bouyer * 113 1.1.2.2 bouyer * There are various reasons for this, mainly 114 1.1.2.2 bouyer * - Performance: identify the common (successful) path, and follow it; 115 1.1.2.2 bouyer * at interrupt time no code is needed to find the current status 116 1.1.2.2 bouyer * - Code size: it should be easy to compact common operations 117 1.1.2.2 bouyer * - Adaptability: the code skeleton should adapt to different chips without 118 1.1.2.2 bouyer * terrible complications. 119 1.1.2.2 bouyer * - Error handling: and it is easy to modify the actions performed 120 1.1.2.2 bouyer * by the scripts to cope with strange but well identified sequences 121 1.1.2.2 bouyer * 122 1.1.2.2 bouyer */ 123 1.1.2.2 bouyer 124 1.1.2.2 bouyer #include <sys/param.h> 125 1.1.2.2 bouyer #include <sys/systm.h> 126 1.1.2.2 bouyer #include <sys/dkstat.h> 127 1.1.2.2 bouyer #include <sys/buf.h> 128 1.1.2.2 bouyer #include <sys/proc.h> 129 1.1.2.2 bouyer #include <sys/conf.h> 130 1.1.2.2 bouyer #include <sys/errno.h> 131 1.1.2.2 bouyer #include <sys/device.h> 132 1.1.2.2 bouyer #include <uvm/uvm_extern.h> 133 1.1.2.2 bouyer 134 1.1.2.2 bouyer #include <dev/scsipi/scsi_all.h> 135 1.1.2.2 bouyer #include <dev/scsipi/scsipi_all.h> 136 1.1.2.2 bouyer #include <dev/scsipi/scsiconf.h> 137 1.1.2.2 bouyer 138 1.1.2.2 bouyer #include <mips/locore.h> /* for mips3_HitFlushDCache() */ 139 1.1.2.2 bouyer #include <machine/cpu.h> 140 1.1.2.2 bouyer #include <machine/autoconf.h> 141 1.1.2.2 bouyer #include <machine/bus.h> 142 1.1.2.2 bouyer 143 1.1.2.2 bouyer #include <arc/jazz/jazziovar.h> 144 1.1.2.2 bouyer #include <arc/jazz/jazzdmatlbreg.h> 145 1.1.2.2 bouyer #include <arc/jazz/dma.h> 146 1.1.2.2 bouyer #include <arc/jazz/scsi.h> 147 1.1.2.2 bouyer #include <arc/jazz/ascreg.h> 148 1.1.2.2 bouyer 149 1.1.2.2 bouyer #include <arc/jazz/pica.h> 150 1.1.2.2 bouyer #include <arc/arc/arctype.h> 151 1.1.2.2 bouyer 152 1.1.2.2 bouyer 153 1.1.2.2 bouyer #define readback(a) { register int foo; foo = (a); } 154 1.1.2.2 bouyer 155 1.1.2.2 bouyer /* 156 1.1.2.2 bouyer * In 4ns ticks. 157 1.1.2.2 bouyer */ 158 1.1.2.2 bouyer int asc_to_scsi_period[] = { 159 1.1.2.2 bouyer 32, 160 1.1.2.2 bouyer 33, 161 1.1.2.2 bouyer 34, 162 1.1.2.2 bouyer 35, 163 1.1.2.2 bouyer 5, 164 1.1.2.2 bouyer 5, 165 1.1.2.2 bouyer 6, 166 1.1.2.2 bouyer 7, 167 1.1.2.2 bouyer 8, 168 1.1.2.2 bouyer 9, 169 1.1.2.2 bouyer 10, 170 1.1.2.2 bouyer 11, 171 1.1.2.2 bouyer 12, 172 1.1.2.2 bouyer 13, 173 1.1.2.2 bouyer 14, 174 1.1.2.2 bouyer 15, 175 1.1.2.2 bouyer 16, 176 1.1.2.2 bouyer 17, 177 1.1.2.2 bouyer 18, 178 1.1.2.2 bouyer 19, 179 1.1.2.2 bouyer 20, 180 1.1.2.2 bouyer 21, 181 1.1.2.2 bouyer 22, 182 1.1.2.2 bouyer 23, 183 1.1.2.2 bouyer 24, 184 1.1.2.2 bouyer 25, 185 1.1.2.2 bouyer 26, 186 1.1.2.2 bouyer 27, 187 1.1.2.2 bouyer 28, 188 1.1.2.2 bouyer 29, 189 1.1.2.2 bouyer 30, 190 1.1.2.2 bouyer 31, 191 1.1.2.2 bouyer }; 192 1.1.2.2 bouyer 193 1.1.2.2 bouyer /* 194 1.1.2.2 bouyer * Internal forward declarations. 195 1.1.2.2 bouyer */ 196 1.1.2.2 bouyer struct asc_softc; 197 1.1.2.2 bouyer static void asc_reset __P((struct asc_softc *, asc_regmap_t *)); 198 1.1.2.2 bouyer static void asc_startcmd __P((struct asc_softc *, int)); 199 1.1.2.2 bouyer 200 1.1.2.2 bouyer #ifdef DEBUG 201 1.1.2.2 bouyer int asc_debug = 1; 202 1.1.2.2 bouyer int asc_debug_cmd; 203 1.1.2.2 bouyer int asc_debug_bn; 204 1.1.2.2 bouyer int asc_debug_sz; 205 1.1.2.2 bouyer #define NLOG 16 206 1.1.2.2 bouyer struct asc_log { 207 1.1.2.2 bouyer u_int status; 208 1.1.2.2 bouyer u_char state; 209 1.1.2.2 bouyer u_char msg; 210 1.1.2.2 bouyer int target; 211 1.1.2.2 bouyer int resid; 212 1.1.2.2 bouyer } asc_log[NLOG], *asc_logp = asc_log; 213 1.1.2.2 bouyer #define PACK(unit, status, ss, ir) \ 214 1.1.2.2 bouyer ((unit << 24) | (status << 16) | (ss << 8) | ir) 215 1.1.2.2 bouyer #endif 216 1.1.2.2 bouyer 217 1.1.2.2 bouyer /* 218 1.1.2.2 bouyer * Scripts are entries in a state machine table. 219 1.1.2.2 bouyer * A script has four parts: a pre-condition, an action, a command to the chip, 220 1.1.2.2 bouyer * and an index into asc_scripts for the next state. The first triggers error 221 1.1.2.2 bouyer * handling if not satisfied and in our case it is formed by the 222 1.1.2.2 bouyer * values of the interrupt register and status register, this 223 1.1.2.2 bouyer * basically captures the phase of the bus and the TC and BS 224 1.1.2.2 bouyer * bits. The action part is just a function pointer, and the 225 1.1.2.2 bouyer * command is what the 53C94 should be told to do at the end 226 1.1.2.2 bouyer * of the action processing. This command is only issued and the 227 1.1.2.2 bouyer * script proceeds if the action routine returns TRUE. 228 1.1.2.2 bouyer * See asc_intr() for how and where this is all done. 229 1.1.2.2 bouyer */ 230 1.1.2.2 bouyer typedef struct script { 231 1.1.2.2 bouyer int condition; /* expected state at interrupt time */ 232 1.1.2.2 bouyer int (*action)(struct asc_softc *, int, int, int); 233 1.1.2.2 bouyer /* extra operations */ 234 1.1.2.2 bouyer int command; /* command to the chip */ 235 1.1.2.2 bouyer struct script *next; /* index into asc_scripts for next state */ 236 1.1.2.2 bouyer } script_t; 237 1.1.2.2 bouyer 238 1.1.2.2 bouyer /* Matching on the condition value */ 239 1.1.2.2 bouyer #define SCRIPT_MATCH(ir, csr) ((ir) | (((csr) & 0x67) << 8)) 240 1.1.2.2 bouyer 241 1.1.2.2 bouyer 242 1.1.2.2 bouyer /* forward decls of script actions */ 243 1.1.2.2 bouyer /* when nothing needed */ 244 1.1.2.2 bouyer static int script_nop __P((struct asc_softc *, int, int, int)); 245 1.1.2.2 bouyer /* all come to an end */ 246 1.1.2.2 bouyer static int asc_end __P((struct asc_softc *, int, int, int)); 247 1.1.2.2 bouyer /* get status from target */ 248 1.1.2.2 bouyer static int asc_get_status __P((struct asc_softc *, int, int, int)); 249 1.1.2.2 bouyer /* start reading data from target */ 250 1.1.2.2 bouyer static int asc_dma_in __P((struct asc_softc *, int, int, int)); 251 1.1.2.2 bouyer /* cleanup after all data is read */ 252 1.1.2.2 bouyer static int asc_last_dma_in __P((struct asc_softc *, int, int, int)); 253 1.1.2.2 bouyer /* resume data in after a message */ 254 1.1.2.2 bouyer static int asc_resume_in __P((struct asc_softc *, int, int, int)); 255 1.1.2.2 bouyer /* resume DMA after a disconnect */ 256 1.1.2.2 bouyer static int asc_resume_dma_in __P((struct asc_softc *, int, int, int)); 257 1.1.2.2 bouyer /* send data to target via dma */ 258 1.1.2.2 bouyer static int asc_dma_out __P((struct asc_softc *, int, int, int)); 259 1.1.2.2 bouyer /* cleanup after all data is written */ 260 1.1.2.2 bouyer static int asc_last_dma_out __P((struct asc_softc *, int, int, int)); 261 1.1.2.2 bouyer /* resume data out after a message */ 262 1.1.2.2 bouyer static int asc_resume_out __P((struct asc_softc *, int, int, int)); 263 1.1.2.2 bouyer /* resume DMA after a disconnect */ 264 1.1.2.2 bouyer static int asc_resume_dma_out __P((struct asc_softc *, int, int, int)); 265 1.1.2.2 bouyer /* negotiate sync xfer */ 266 1.1.2.2 bouyer static int asc_sendsync __P((struct asc_softc *, int, int, int)); 267 1.1.2.2 bouyer /* negotiate sync xfer */ 268 1.1.2.2 bouyer static int asc_replysync __P((struct asc_softc *, int, int, int)); 269 1.1.2.2 bouyer /* process a message byte */ 270 1.1.2.2 bouyer static int asc_msg_in __P((struct asc_softc *, int, int, int)); 271 1.1.2.2 bouyer /* process an expected disconnect */ 272 1.1.2.2 bouyer static int asc_disconnect __P((struct asc_softc *, int, int, int)); 273 1.1.2.2 bouyer 274 1.1.2.2 bouyer /* Define the index into asc_scripts for various state transitions */ 275 1.1.2.2 bouyer #define SCRIPT_DATA_IN 0 276 1.1.2.2 bouyer #define SCRIPT_CONTINUE_IN 2 277 1.1.2.2 bouyer #define SCRIPT_DATA_OUT 3 278 1.1.2.2 bouyer #define SCRIPT_CONTINUE_OUT 5 279 1.1.2.2 bouyer #define SCRIPT_SIMPLE 6 280 1.1.2.2 bouyer #define SCRIPT_GET_STATUS 7 281 1.1.2.2 bouyer #define SCRIPT_DONE 8 282 1.1.2.2 bouyer #define SCRIPT_MSG_IN 9 283 1.1.2.2 bouyer #define SCRIPT_REPLY_SYNC 11 284 1.1.2.2 bouyer #define SCRIPT_TRY_SYNC 12 285 1.1.2.2 bouyer #define SCRIPT_DISCONNECT 15 286 1.1.2.2 bouyer #define SCRIPT_RESEL 16 287 1.1.2.2 bouyer #define SCRIPT_RESUME_IN 17 288 1.1.2.2 bouyer #define SCRIPT_RESUME_DMA_IN 18 289 1.1.2.2 bouyer #define SCRIPT_RESUME_OUT 19 290 1.1.2.2 bouyer #define SCRIPT_RESUME_DMA_OUT 20 291 1.1.2.2 bouyer #define SCRIPT_RESUME_NO_DATA 21 292 1.1.2.2 bouyer 293 1.1.2.2 bouyer /* 294 1.1.2.2 bouyer * Scripts 295 1.1.2.2 bouyer */ 296 1.1.2.2 bouyer script_t asc_scripts[] = { 297 1.1.2.2 bouyer /* start data in */ 298 1.1.2.2 bouyer {SCRIPT_MATCH(ASC_INT_FC | ASC_INT_BS, ASC_PHASE_DATAI), /* 0 */ 299 1.1.2.2 bouyer asc_dma_in, ASC_CMD_XFER_INFO | ASC_CMD_DMA, 300 1.1.2.2 bouyer &asc_scripts[SCRIPT_DATA_IN + 1]}, 301 1.1.2.2 bouyer {SCRIPT_MATCH(ASC_INT_BS, ASC_PHASE_STATUS), /* 1 */ 302 1.1.2.2 bouyer asc_last_dma_in, ASC_CMD_I_COMPLETE, 303 1.1.2.2 bouyer &asc_scripts[SCRIPT_GET_STATUS]}, 304 1.1.2.2 bouyer 305 1.1.2.2 bouyer /* continue data in after a chunk is finished */ 306 1.1.2.2 bouyer {SCRIPT_MATCH(ASC_INT_BS, ASC_PHASE_DATAI), /* 2 */ 307 1.1.2.2 bouyer asc_dma_in, ASC_CMD_XFER_INFO | ASC_CMD_DMA, 308 1.1.2.2 bouyer &asc_scripts[SCRIPT_DATA_IN + 1]}, 309 1.1.2.2 bouyer 310 1.1.2.2 bouyer /* start data out */ 311 1.1.2.2 bouyer {SCRIPT_MATCH(ASC_INT_FC | ASC_INT_BS, ASC_PHASE_DATAO), /* 3 */ 312 1.1.2.2 bouyer asc_dma_out, ASC_CMD_XFER_INFO | ASC_CMD_DMA, 313 1.1.2.2 bouyer &asc_scripts[SCRIPT_DATA_OUT + 1]}, 314 1.1.2.2 bouyer {SCRIPT_MATCH(ASC_INT_BS, ASC_PHASE_STATUS), /* 4 */ 315 1.1.2.2 bouyer asc_last_dma_out, ASC_CMD_I_COMPLETE, 316 1.1.2.2 bouyer &asc_scripts[SCRIPT_GET_STATUS]}, 317 1.1.2.2 bouyer 318 1.1.2.2 bouyer /* continue data out after a chunk is finished */ 319 1.1.2.2 bouyer {SCRIPT_MATCH(ASC_INT_BS, ASC_PHASE_DATAO), /* 5 */ 320 1.1.2.2 bouyer asc_dma_out, ASC_CMD_XFER_INFO | ASC_CMD_DMA, 321 1.1.2.2 bouyer &asc_scripts[SCRIPT_DATA_OUT + 1]}, 322 1.1.2.2 bouyer 323 1.1.2.2 bouyer /* simple command with no data transfer */ 324 1.1.2.2 bouyer {SCRIPT_MATCH(ASC_INT_FC | ASC_INT_BS, ASC_PHASE_STATUS), /* 6 */ 325 1.1.2.2 bouyer script_nop, ASC_CMD_I_COMPLETE, 326 1.1.2.2 bouyer &asc_scripts[SCRIPT_GET_STATUS]}, 327 1.1.2.2 bouyer 328 1.1.2.2 bouyer /* get status and finish command */ 329 1.1.2.2 bouyer {SCRIPT_MATCH(ASC_INT_FC, ASC_PHASE_MSG_IN), /* 7 */ 330 1.1.2.2 bouyer asc_get_status, ASC_CMD_MSG_ACPT, 331 1.1.2.2 bouyer &asc_scripts[SCRIPT_DONE]}, 332 1.1.2.2 bouyer {SCRIPT_MATCH(ASC_INT_DISC, 0), /* 8 */ 333 1.1.2.2 bouyer asc_end, ASC_CMD_NOP, 334 1.1.2.2 bouyer &asc_scripts[SCRIPT_DONE]}, 335 1.1.2.2 bouyer 336 1.1.2.2 bouyer /* message in */ 337 1.1.2.2 bouyer {SCRIPT_MATCH(ASC_INT_FC, ASC_PHASE_MSG_IN), /* 9 */ 338 1.1.2.2 bouyer asc_msg_in, ASC_CMD_MSG_ACPT, 339 1.1.2.2 bouyer &asc_scripts[SCRIPT_MSG_IN + 1]}, 340 1.1.2.2 bouyer {SCRIPT_MATCH(ASC_INT_BS, ASC_PHASE_MSG_IN), /* 10 */ 341 1.1.2.2 bouyer script_nop, ASC_CMD_XFER_INFO, 342 1.1.2.2 bouyer &asc_scripts[SCRIPT_MSG_IN]}, 343 1.1.2.2 bouyer 344 1.1.2.2 bouyer /* send synchonous negotiation reply */ 345 1.1.2.2 bouyer {SCRIPT_MATCH(ASC_INT_BS, ASC_PHASE_MSG_OUT), /* 11 */ 346 1.1.2.2 bouyer asc_replysync, ASC_CMD_XFER_INFO, 347 1.1.2.2 bouyer &asc_scripts[SCRIPT_REPLY_SYNC]}, 348 1.1.2.2 bouyer 349 1.1.2.2 bouyer /* try to negotiate synchonous transfer parameters */ 350 1.1.2.2 bouyer {SCRIPT_MATCH(ASC_INT_FC | ASC_INT_BS, ASC_PHASE_MSG_OUT), /* 12 */ 351 1.1.2.2 bouyer asc_sendsync, ASC_CMD_XFER_INFO, 352 1.1.2.2 bouyer &asc_scripts[SCRIPT_TRY_SYNC + 1]}, 353 1.1.2.2 bouyer {SCRIPT_MATCH(ASC_INT_BS, ASC_PHASE_MSG_IN), /* 13 */ 354 1.1.2.2 bouyer script_nop, ASC_CMD_XFER_INFO, 355 1.1.2.2 bouyer &asc_scripts[SCRIPT_MSG_IN]}, 356 1.1.2.2 bouyer {SCRIPT_MATCH(ASC_INT_BS, ASC_PHASE_COMMAND), /* 14 */ 357 1.1.2.2 bouyer script_nop, ASC_CMD_XFER_INFO | ASC_CMD_DMA, 358 1.1.2.2 bouyer &asc_scripts[SCRIPT_RESUME_NO_DATA]}, 359 1.1.2.2 bouyer 360 1.1.2.2 bouyer /* handle a disconnect */ 361 1.1.2.2 bouyer {SCRIPT_MATCH(ASC_INT_DISC, ASC_PHASE_DATAO), /* 15 */ 362 1.1.2.2 bouyer asc_disconnect, ASC_CMD_ENABLE_SEL, 363 1.1.2.2 bouyer &asc_scripts[SCRIPT_RESEL]}, 364 1.1.2.2 bouyer 365 1.1.2.2 bouyer /* reselect sequence: this is just a placeholder so match fails */ 366 1.1.2.2 bouyer {SCRIPT_MATCH(0, ASC_PHASE_MSG_IN), /* 16 */ 367 1.1.2.2 bouyer script_nop, ASC_CMD_MSG_ACPT, 368 1.1.2.2 bouyer &asc_scripts[SCRIPT_RESEL]}, 369 1.1.2.2 bouyer 370 1.1.2.2 bouyer /* resume data in after a message */ 371 1.1.2.2 bouyer {SCRIPT_MATCH(ASC_INT_BS, ASC_PHASE_DATAI), /* 17 */ 372 1.1.2.2 bouyer asc_resume_in, ASC_CMD_XFER_INFO | ASC_CMD_DMA, 373 1.1.2.2 bouyer &asc_scripts[SCRIPT_DATA_IN + 1]}, 374 1.1.2.2 bouyer 375 1.1.2.2 bouyer /* resume partial DMA data in after a message */ 376 1.1.2.2 bouyer {SCRIPT_MATCH(ASC_INT_BS, ASC_PHASE_DATAI), /* 18 */ 377 1.1.2.2 bouyer asc_resume_dma_in, ASC_CMD_XFER_INFO | ASC_CMD_DMA, 378 1.1.2.2 bouyer &asc_scripts[SCRIPT_DATA_IN + 1]}, 379 1.1.2.2 bouyer 380 1.1.2.2 bouyer /* resume data out after a message */ 381 1.1.2.2 bouyer {SCRIPT_MATCH(ASC_INT_BS, ASC_PHASE_DATAO), /* 19 */ 382 1.1.2.2 bouyer asc_resume_out, ASC_CMD_XFER_INFO | ASC_CMD_DMA, 383 1.1.2.2 bouyer &asc_scripts[SCRIPT_DATA_OUT + 1]}, 384 1.1.2.2 bouyer 385 1.1.2.2 bouyer /* resume partial DMA data out after a message */ 386 1.1.2.2 bouyer {SCRIPT_MATCH(ASC_INT_BS, ASC_PHASE_DATAO), /* 20 */ 387 1.1.2.2 bouyer asc_resume_dma_out, ASC_CMD_XFER_INFO | ASC_CMD_DMA, 388 1.1.2.2 bouyer &asc_scripts[SCRIPT_DATA_OUT + 1]}, 389 1.1.2.2 bouyer 390 1.1.2.2 bouyer /* resume after a message when there is no more data */ 391 1.1.2.2 bouyer {SCRIPT_MATCH(ASC_INT_BS, ASC_PHASE_STATUS), /* 21 */ 392 1.1.2.2 bouyer script_nop, ASC_CMD_I_COMPLETE, 393 1.1.2.2 bouyer &asc_scripts[SCRIPT_GET_STATUS]}, 394 1.1.2.2 bouyer }; 395 1.1.2.2 bouyer 396 1.1.2.2 bouyer /* 397 1.1.2.2 bouyer * State kept for each active SCSI device. 398 1.1.2.2 bouyer */ 399 1.1.2.2 bouyer typedef struct scsi_state { 400 1.1.2.2 bouyer script_t *script; /* saved script while processing error */ 401 1.1.2.2 bouyer struct scsi_generic cmd;/* storage for scsi command */ 402 1.1.2.2 bouyer int statusByte; /* status byte returned during STATUS_PHASE */ 403 1.1.2.2 bouyer u_int dmaBufSize; /* DMA buffer size */ 404 1.1.2.2 bouyer int dmalen; /* amount to transfer in this chunk */ 405 1.1.2.2 bouyer int dmaresid; /* amount not transfered if chunk suspended */ 406 1.1.2.2 bouyer int cmdlen; /* length of command in cmd */ 407 1.1.2.2 bouyer int buflen; /* total remaining amount of data to transfer */ 408 1.1.2.2 bouyer vaddr_t buf; /* current pointer within scsicmd->buf */ 409 1.1.2.2 bouyer int flags; /* see below */ 410 1.1.2.2 bouyer int msglen; /* number of message bytes to read */ 411 1.1.2.2 bouyer int msgcnt; /* number of message bytes received */ 412 1.1.2.2 bouyer u_char sync_period; /* DMA synchronous period */ 413 1.1.2.2 bouyer u_char sync_offset; /* DMA synchronous xfer offset or 0 if async */ 414 1.1.2.2 bouyer u_char msg_out; /* next MSG_OUT byte to send */ 415 1.1.2.2 bouyer u_char msg_in[16]; /* buffer for multibyte messages */ 416 1.1.2.2 bouyer } State; 417 1.1.2.2 bouyer 418 1.1.2.2 bouyer /* state flags */ 419 1.1.2.2 bouyer #define DISCONN 0x001 /* true if currently disconnected from bus */ 420 1.1.2.2 bouyer #define DMA_IN_PROGRESS 0x002 /* true if data DMA started */ 421 1.1.2.2 bouyer #define DMA_IN 0x004 /* true if reading from SCSI device */ 422 1.1.2.2 bouyer #define DMA_OUT 0x010 /* true if writing to SCSI device */ 423 1.1.2.2 bouyer #define DID_SYNC 0x020 /* true if synchronous offset was negotiated */ 424 1.1.2.2 bouyer #define TRY_SYNC 0x040 /* true if try neg. synchronous offset */ 425 1.1.2.2 bouyer #define PARITY_ERR 0x080 /* true if parity error seen */ 426 1.1.2.2 bouyer #define CHECK_SENSE 0x100 /* true if doing sense command */ 427 1.1.2.2 bouyer 428 1.1.2.2 bouyer /* 429 1.1.2.2 bouyer * State kept for each active SCSI host interface (53C94). 430 1.1.2.2 bouyer */ 431 1.1.2.2 bouyer struct asc_softc { 432 1.1.2.2 bouyer struct device sc_dev; /* use as a device */ 433 1.1.2.2 bouyer asc_regmap_t *regs; /* chip address */ 434 1.1.2.2 bouyer dma_softc_t __dma; /* stupid macro..... */ 435 1.1.2.2 bouyer dma_softc_t *dma; /* dma control structure */ 436 1.1.2.2 bouyer int sc_id; /* SCSI ID of this interface */ 437 1.1.2.2 bouyer int myidmask; /* ~(1 << myid) */ 438 1.1.2.2 bouyer int state; /* current SCSI connection state */ 439 1.1.2.2 bouyer int target; /* target SCSI ID if busy */ 440 1.1.2.2 bouyer script_t *script; /* next expected interrupt & action */ 441 1.1.2.2 bouyer struct scsipi_xfer *cmdq[ASC_NCMD];/* Pointer to queued commands */ 442 1.1.2.2 bouyer struct scsipi_xfer *cmd[ASC_NCMD];/* Pointer to current active command */ 443 1.1.2.2 bouyer State st[ASC_NCMD]; /* state info for each active command */ 444 1.1.2.2 bouyer int min_period; /* Min transfer period clk/byte */ 445 1.1.2.2 bouyer int max_period; /* Max transfer period clk/byte */ 446 1.1.2.2 bouyer int ccf; /* CCF, whatever that really is? */ 447 1.1.2.2 bouyer int timeout_250; /* 250ms timeout */ 448 1.1.2.2 bouyer int tb_ticks; /* 4ns. ticks/tb channel ticks */ 449 1.1.2.2 bouyer int is24bit; /* if 53CF94/96-2, 24bit address */ 450 1.1.2.2 bouyer struct scsipi_link sc_link; /* scsipi link struct */ 451 1.1.2.2 bouyer struct scsipi_adapter sc_adapter; 452 1.1.2.2 bouyer }; 453 1.1.2.2 bouyer 454 1.1.2.2 bouyer #define ASC_STATE_IDLE 0 /* idle state */ 455 1.1.2.2 bouyer #define ASC_STATE_BUSY 1 /* selecting or currently connected */ 456 1.1.2.2 bouyer #define ASC_STATE_TARGET 2 /* currently selected as target */ 457 1.1.2.2 bouyer #define ASC_STATE_RESEL 3 /* currently waiting for reselect */ 458 1.1.2.2 bouyer 459 1.1.2.2 bouyer typedef struct asc_softc *asc_softc_t; 460 1.1.2.2 bouyer 461 1.1.2.2 bouyer /* 462 1.1.2.2 bouyer * Autoconfiguration data for config. 463 1.1.2.2 bouyer */ 464 1.1.2.2 bouyer int ascmatch __P((struct device *, struct cfdata *, void *)); 465 1.1.2.2 bouyer void ascattach __P((struct device *, struct device *, void *)); 466 1.1.2.2 bouyer 467 1.1.2.2 bouyer int asc_doprobe __P((void *, int, int, struct device *)); 468 1.1.2.2 bouyer 469 1.1.2.2 bouyer struct cfattach asc_ca = { 470 1.1.2.2 bouyer sizeof(struct asc_softc), ascmatch, ascattach 471 1.1.2.2 bouyer }; 472 1.1.2.2 bouyer 473 1.1.2.2 bouyer /* 474 1.1.2.2 bouyer * Glue to the machine dependent scsi 475 1.1.2.2 bouyer */ 476 1.1.2.2 bouyer int asc_scsi_cmd __P((struct scsipi_xfer *)); 477 1.1.2.2 bouyer void asc_minphys __P((struct buf *)); 478 1.1.2.2 bouyer 479 1.1.2.2 bouyer struct scsipi_device asc_dev = { 480 1.1.2.2 bouyer /*XXX*/ NULL, /* Use default error handler */ 481 1.1.2.2 bouyer /*XXX*/ NULL, /* have a queue, served by this */ 482 1.1.2.2 bouyer /*XXX*/ NULL, /* have no async handler */ 483 1.1.2.2 bouyer /*XXX*/ NULL, /* Use default 'done' routine */ 484 1.1.2.2 bouyer }; 485 1.1.2.2 bouyer 486 1.1.2.2 bouyer static int asc_intr __P((void *)); 487 1.1.2.2 bouyer static int asc_poll __P((struct asc_softc *, int)); 488 1.1.2.2 bouyer #ifdef DEBUG 489 1.1.2.2 bouyer static void asc_DumpLog __P((char *)); 490 1.1.2.2 bouyer #endif 491 1.1.2.2 bouyer 492 1.1.2.2 bouyer /* 493 1.1.2.2 bouyer * Match driver based on name 494 1.1.2.2 bouyer */ 495 1.1.2.2 bouyer int 496 1.1.2.2 bouyer ascmatch(parent, match, aux) 497 1.1.2.2 bouyer struct device *parent; 498 1.1.2.2 bouyer struct cfdata *match; 499 1.1.2.2 bouyer void *aux; 500 1.1.2.2 bouyer { 501 1.1.2.2 bouyer struct jazzio_attach_args *ja = aux; 502 1.1.2.2 bouyer 503 1.1.2.2 bouyer if(strcmp(ja->ja_name, "asc") != 0) 504 1.1.2.2 bouyer return (0); 505 1.1.2.2 bouyer return (1); 506 1.1.2.2 bouyer } 507 1.1.2.2 bouyer 508 1.1.2.2 bouyer void 509 1.1.2.2 bouyer ascattach(parent, self, aux) 510 1.1.2.2 bouyer struct device *parent; 511 1.1.2.2 bouyer struct device *self; 512 1.1.2.2 bouyer void *aux; 513 1.1.2.2 bouyer { 514 1.1.2.2 bouyer struct jazzio_attach_args *ja = aux; 515 1.1.2.2 bouyer asc_softc_t asc = (void *)self; 516 1.1.2.2 bouyer asc_regmap_t *regs; 517 1.1.2.2 bouyer int id, s, i; 518 1.1.2.2 bouyer int bufsiz; 519 1.1.2.2 bouyer 520 1.1.2.2 bouyer /* 521 1.1.2.2 bouyer * Initialize hw descriptor, cache some pointers 522 1.1.2.2 bouyer */ 523 1.1.2.2 bouyer asc->regs = (asc_regmap_t *)ja->ja_addr; /* XXX */ 524 1.1.2.2 bouyer 525 1.1.2.2 bouyer /* 526 1.1.2.2 bouyer * Set up machine dependencies. 527 1.1.2.2 bouyer * 1) how to do dma 528 1.1.2.2 bouyer * 2) timing based on chip clock frequency 529 1.1.2.2 bouyer */ 530 1.1.2.2 bouyer switch (cputype) { 531 1.1.2.2 bouyer case ACER_PICA_61: 532 1.1.2.2 bouyer case MAGNUM: 533 1.1.2.2 bouyer bufsiz = 63 * 1024; /*XXX check if code handles 0 as 64k */ 534 1.1.2.2 bouyer asc->dma = &asc->__dma; 535 1.1.2.2 bouyer asc_dma_init(asc->dma); 536 1.1.2.2 bouyer break; 537 1.1.2.2 bouyer default: 538 1.1.2.2 bouyer bufsiz = 64 * 1024; 539 1.1.2.2 bouyer }; 540 1.1.2.2 bouyer /* 541 1.1.2.2 bouyer * Now for timing. The pica has a 25Mhz, NEC M403 has a 40MHz. 542 1.1.2.2 bouyer */ 543 1.1.2.2 bouyer switch (cputype) { 544 1.1.2.2 bouyer case MAGNUM: /* XXX - NEC M403 */ 545 1.1.2.2 bouyer asc->min_period = ASC_MIN_PERIOD40; 546 1.1.2.2 bouyer asc->max_period = ASC_MAX_PERIOD40; 547 1.1.2.2 bouyer asc->ccf = ASC_CCF(40); 548 1.1.2.2 bouyer asc->timeout_250 = ASC_TIMEOUT_250(40, 549 1.1.2.2 bouyer asc->ccf != 0 ? asc->ccf : 8); 550 1.1.2.2 bouyer asc->tb_ticks = 6; /* 6.25 */ 551 1.1.2.2 bouyer break; 552 1.1.2.2 bouyer case ACER_PICA_61: 553 1.1.2.2 bouyer asc->min_period = ASC_MIN_PERIOD25; 554 1.1.2.2 bouyer asc->max_period = ASC_MAX_PERIOD25; 555 1.1.2.2 bouyer asc->ccf = ASC_CCF(25); 556 1.1.2.2 bouyer asc->timeout_250 = ASC_TIMEOUT_250(25, asc->ccf); 557 1.1.2.2 bouyer asc->tb_ticks = 10; 558 1.1.2.2 bouyer break; 559 1.1.2.2 bouyer default: 560 1.1.2.2 bouyer asc->min_period = ASC_MIN_PERIOD12; 561 1.1.2.2 bouyer asc->max_period = ASC_MAX_PERIOD12; 562 1.1.2.2 bouyer asc->ccf = ASC_CCF(13); 563 1.1.2.2 bouyer asc->timeout_250 = ASC_TIMEOUT_250(13, asc->ccf); 564 1.1.2.2 bouyer asc->tb_ticks = 20; 565 1.1.2.2 bouyer break; 566 1.1.2.2 bouyer }; 567 1.1.2.2 bouyer 568 1.1.2.2 bouyer asc->state = ASC_STATE_IDLE; 569 1.1.2.2 bouyer asc->target = -1; 570 1.1.2.2 bouyer 571 1.1.2.2 bouyer regs = asc->regs; 572 1.1.2.2 bouyer 573 1.1.2.2 bouyer /* 574 1.1.2.2 bouyer * Reset chip, fully. Note that interrupts are already enabled. 575 1.1.2.2 bouyer */ 576 1.1.2.2 bouyer s = splbio(); 577 1.1.2.2 bouyer 578 1.1.2.2 bouyer /* preserve our ID for now */ 579 1.1.2.2 bouyer asc->sc_id = regs->asc_cnfg1 & ASC_CNFG1_MY_BUS_ID; 580 1.1.2.2 bouyer asc->myidmask = ~(1 << asc->sc_id); 581 1.1.2.2 bouyer 582 1.1.2.2 bouyer /* identify 53CF9x-2 or not */ 583 1.1.2.2 bouyer regs->asc_cmd = ASC_CMD_RESET; 584 1.1.2.2 bouyer wbflush(); DELAY(25); 585 1.1.2.2 bouyer regs->asc_cmd = ASC_CMD_DMA | ASC_CMD_NOP; 586 1.1.2.2 bouyer wbflush(); DELAY(25); 587 1.1.2.2 bouyer regs->asc_cnfg2 = ASC_CNFG2_FE; 588 1.1.2.2 bouyer wbflush(); DELAY(25); 589 1.1.2.2 bouyer regs->asc_cmd = ASC_CMD_DMA | ASC_CMD_NOP; 590 1.1.2.2 bouyer wbflush(); DELAY(25); 591 1.1.2.2 bouyer asc->is24bit = regs->asc_id == ASC_ID_53CF94; 592 1.1.2.2 bouyer 593 1.1.2.2 bouyer asc_reset(asc, regs); 594 1.1.2.2 bouyer 595 1.1.2.2 bouyer /* 596 1.1.2.2 bouyer * Our SCSI id on the bus. 597 1.1.2.2 bouyer * The user can set this via the prom on 3maxen/picaen. 598 1.1.2.2 bouyer * If this changes it is easy to fix: make a default that 599 1.1.2.2 bouyer * can be changed as boot arg. 600 1.1.2.2 bouyer */ 601 1.1.2.2 bouyer #ifdef unneeded 602 1.1.2.2 bouyer regs->asc_cnfg1 = (regs->asc_cnfg1 & ~ASC_CNFG1_MY_BUS_ID) | 603 1.1.2.2 bouyer (scsi_initiator_id[unit] & 0x7); 604 1.1.2.2 bouyer asc->sc_id = regs->asc_cnfg1 & ASC_CNFG1_MY_BUS_ID; 605 1.1.2.2 bouyer #endif 606 1.1.2.2 bouyer id = asc->sc_id; 607 1.1.2.2 bouyer splx(s); 608 1.1.2.2 bouyer 609 1.1.2.2 bouyer /* 610 1.1.2.2 bouyer * Give each target its DMA buffer region. 611 1.1.2.2 bouyer * The buffer address is the same for all targets, 612 1.1.2.2 bouyer * the allocated dma viritual scatter/gather space. 613 1.1.2.2 bouyer */ 614 1.1.2.2 bouyer for (i = 0; i < ASC_NCMD; i++) { 615 1.1.2.2 bouyer asc->st[i].dmaBufSize = bufsiz; 616 1.1.2.2 bouyer } 617 1.1.2.2 bouyer 618 1.1.2.2 bouyer /* 619 1.1.2.2 bouyer * Set up interrupt handler. 620 1.1.2.2 bouyer */ 621 1.1.2.2 bouyer jazzio_intr_establish(ja->ja_intr, asc_intr, (void *)asc); 622 1.1.2.2 bouyer 623 1.1.2.2 bouyer printf(": %s, target %d\n", asc->is24bit ? "NCR53CF9X-2" : "NCR53C94", 624 1.1.2.2 bouyer id); 625 1.1.2.2 bouyer 626 1.1.2.2 bouyer /* 627 1.1.2.2 bouyer * Fill in the adapter. 628 1.1.2.2 bouyer */ 629 1.1.2.2 bouyer asc->sc_adapter.scsipi_cmd = asc_scsi_cmd; 630 1.1.2.2 bouyer asc->sc_adapter.scsipi_minphys = asc_minphys; 631 1.1.2.2 bouyer 632 1.1.2.2 bouyer /* 633 1.1.2.2 bouyer * Fill in the prototype scsipi link. 634 1.1.2.2 bouyer */ 635 1.1.2.2 bouyer asc->sc_link.scsipi_scsi.channel = SCSI_CHANNEL_ONLY_ONE; 636 1.1.2.2 bouyer asc->sc_link.adapter_softc = asc; 637 1.1.2.2 bouyer asc->sc_link.scsipi_scsi.adapter_target = asc->sc_id; 638 1.1.2.2 bouyer asc->sc_link.adapter = &asc->sc_adapter; 639 1.1.2.2 bouyer asc->sc_link.device = &asc_dev; 640 1.1.2.2 bouyer asc->sc_link.openings = 2; 641 1.1.2.2 bouyer asc->sc_link.scsipi_scsi.max_target = 7; 642 1.1.2.2 bouyer asc->sc_link.scsipi_scsi.max_lun = 7; 643 1.1.2.2 bouyer asc->sc_link.type = BUS_SCSI; 644 1.1.2.2 bouyer 645 1.1.2.2 bouyer /* 646 1.1.2.2 bouyer * Now try to attach all the sub devices. 647 1.1.2.2 bouyer */ 648 1.1.2.2 bouyer config_found(self, &asc->sc_link, scsiprint); 649 1.1.2.2 bouyer } 650 1.1.2.2 bouyer 651 1.1.2.2 bouyer /* 652 1.1.2.2 bouyer * Driver breaks down request transfer size. 653 1.1.2.2 bouyer */ 654 1.1.2.2 bouyer void 655 1.1.2.2 bouyer asc_minphys(bp) 656 1.1.2.2 bouyer struct buf *bp; 657 1.1.2.2 bouyer { 658 1.1.2.2 bouyer minphys(bp); 659 1.1.2.2 bouyer } 660 1.1.2.2 bouyer 661 1.1.2.2 bouyer /* 662 1.1.2.2 bouyer * Start activity on a SCSI device. 663 1.1.2.2 bouyer * We maintain information on each device separately since devices can 664 1.1.2.2 bouyer * connect/disconnect during an operation. 665 1.1.2.2 bouyer */ 666 1.1.2.2 bouyer int 667 1.1.2.2 bouyer asc_scsi_cmd(xs) 668 1.1.2.2 bouyer struct scsipi_xfer *xs; 669 1.1.2.2 bouyer { 670 1.1.2.2 bouyer struct scsipi_link *sc_link = xs->sc_link; 671 1.1.2.2 bouyer struct asc_softc *asc = sc_link->adapter_softc; 672 1.1.2.2 bouyer 673 1.1.2.2 bouyer int dontqueue = xs->xs_control & XS_CTL_POLL; 674 1.1.2.2 bouyer int s; 675 1.1.2.2 bouyer 676 1.1.2.2 bouyer /* 677 1.1.2.2 bouyer * Flush caches for any data buffer 678 1.1.2.2 bouyer */ 679 1.1.2.2 bouyer if(xs->datalen != 0) { 680 1.1.2.2 bouyer mips3_HitFlushDCache((vaddr_t)xs->data, xs->datalen); 681 1.1.2.2 bouyer } 682 1.1.2.2 bouyer /* 683 1.1.2.2 bouyer * The hack on the next few lines are to avoid buffers 684 1.1.2.2 bouyer * mapped to UADDR. Realloc to the kva uarea address. 685 1.1.2.2 bouyer */ 686 1.1.2.2 bouyer if((u_int)(xs->data) >= UADDR) { 687 1.1.2.2 bouyer xs->data = ((u_int)(xs->data) & ~UADDR) + (u_char *)(curproc->p_addr); 688 1.1.2.2 bouyer } 689 1.1.2.2 bouyer 690 1.1.2.2 bouyer /* 691 1.1.2.2 bouyer * Check if another command is already in progress. 692 1.1.2.2 bouyer * We may have to change this if we allow SCSI devices with 693 1.1.2.2 bouyer * separate LUNs. 694 1.1.2.2 bouyer */ 695 1.1.2.2 bouyer s = splbio(); 696 1.1.2.2 bouyer if (asc->cmd[sc_link->scsipi_scsi.target]) { 697 1.1.2.2 bouyer if (asc->cmdq[sc_link->scsipi_scsi.target]) { 698 1.1.2.2 bouyer splx(s); 699 1.1.2.2 bouyer printf("asc_scsi_cmd: called when target busy"); 700 1.1.2.2 bouyer xs->error = XS_DRIVER_STUFFUP; 701 1.1.2.2 bouyer return TRY_AGAIN_LATER; 702 1.1.2.2 bouyer } 703 1.1.2.2 bouyer asc->cmdq[sc_link->scsipi_scsi.target] = xs; 704 1.1.2.2 bouyer splx(s); 705 1.1.2.2 bouyer return SUCCESSFULLY_QUEUED; 706 1.1.2.2 bouyer } 707 1.1.2.2 bouyer asc->cmd[sc_link->scsipi_scsi.target] = xs; 708 1.1.2.2 bouyer 709 1.1.2.2 bouyer /* 710 1.1.2.2 bouyer * Going to launch. 711 1.1.2.2 bouyer * Make a local copy of the command and some pointers. 712 1.1.2.2 bouyer */ 713 1.1.2.2 bouyer asc_startcmd(asc, sc_link->scsipi_scsi.target); 714 1.1.2.2 bouyer 715 1.1.2.2 bouyer /* 716 1.1.2.2 bouyer * If in startup, interrupts not usable yet. 717 1.1.2.2 bouyer */ 718 1.1.2.2 bouyer if(dontqueue) { 719 1.1.2.2 bouyer return(asc_poll(asc,sc_link->scsipi_scsi.target)); 720 1.1.2.2 bouyer } 721 1.1.2.2 bouyer splx(s); 722 1.1.2.2 bouyer return SUCCESSFULLY_QUEUED; 723 1.1.2.2 bouyer } 724 1.1.2.2 bouyer 725 1.1.2.2 bouyer int 726 1.1.2.2 bouyer asc_poll(asc, target) 727 1.1.2.2 bouyer struct asc_softc *asc; 728 1.1.2.2 bouyer int target; 729 1.1.2.2 bouyer { 730 1.1.2.2 bouyer struct scsipi_xfer *scsicmd = asc->cmd[target]; 731 1.1.2.2 bouyer int count = scsicmd->timeout * 10; 732 1.1.2.2 bouyer 733 1.1.2.2 bouyer while(count) { 734 1.1.2.2 bouyer if(asc->regs->asc_status &ASC_CSR_INT) { 735 1.1.2.2 bouyer asc_intr(asc); 736 1.1.2.2 bouyer } 737 1.1.2.2 bouyer if(scsicmd->xs_status & XS_STS_DONE) 738 1.1.2.2 bouyer break; 739 1.1.2.2 bouyer DELAY(5); 740 1.1.2.2 bouyer count--; 741 1.1.2.2 bouyer } 742 1.1.2.2 bouyer if(count == 0) { 743 1.1.2.2 bouyer scsicmd->error = XS_TIMEOUT; 744 1.1.2.2 bouyer asc_end(asc, 0, 0, 0); 745 1.1.2.2 bouyer } 746 1.1.2.2 bouyer return COMPLETE; 747 1.1.2.2 bouyer } 748 1.1.2.2 bouyer 749 1.1.2.2 bouyer static void 750 1.1.2.2 bouyer asc_reset(asc, regs) 751 1.1.2.2 bouyer asc_softc_t asc; 752 1.1.2.2 bouyer asc_regmap_t *regs; 753 1.1.2.2 bouyer { 754 1.1.2.2 bouyer 755 1.1.2.2 bouyer /* 756 1.1.2.2 bouyer * Reset chip and wait till done 757 1.1.2.2 bouyer */ 758 1.1.2.2 bouyer regs->asc_cmd = ASC_CMD_RESET; 759 1.1.2.2 bouyer wbflush(); DELAY(25); 760 1.1.2.2 bouyer 761 1.1.2.2 bouyer /* spec says this is needed after reset */ 762 1.1.2.2 bouyer regs->asc_cmd = ASC_CMD_NOP; 763 1.1.2.2 bouyer wbflush(); DELAY(25); 764 1.1.2.2 bouyer 765 1.1.2.2 bouyer /* 766 1.1.2.2 bouyer * Set up various chip parameters 767 1.1.2.2 bouyer */ 768 1.1.2.2 bouyer regs->asc_ccf = asc->ccf; 769 1.1.2.2 bouyer wbflush(); DELAY(25); 770 1.1.2.2 bouyer regs->asc_sel_timo = asc->timeout_250; 771 1.1.2.2 bouyer /* restore our ID */ 772 1.1.2.2 bouyer regs->asc_cnfg1 = asc->sc_id | ASC_CNFG1_P_CHECK; 773 1.1.2.2 bouyer /* include ASC_CNFG2_SCSI2 if you want to allow SCSI II commands */ 774 1.1.2.2 bouyer regs->asc_cnfg2 = /* ASC_CNFG2_RFB | ASC_CNFG2_SCSI2 | */ ASC_CNFG2_EPL; 775 1.1.2.2 bouyer switch (cputype) { 776 1.1.2.2 bouyer case MAGNUM: /* XXX - NEC M403 */ 777 1.1.2.2 bouyer /* only if EPL is FE (Feature Enable bit for 53CF94) */ 778 1.1.2.2 bouyer regs->asc_cnfg3 = ASC_CNFG3_FCLK; /* clock 40MHz */ 779 1.1.2.2 bouyer break; 780 1.1.2.2 bouyer default: 781 1.1.2.2 bouyer regs->asc_cnfg3 = 0; 782 1.1.2.2 bouyer break; 783 1.1.2.2 bouyer } 784 1.1.2.2 bouyer /* zero anything else */ 785 1.1.2.2 bouyer ASC_TC_PUT(regs, 0, asc->is24bit); 786 1.1.2.2 bouyer regs->asc_syn_p = asc->min_period; 787 1.1.2.2 bouyer regs->asc_syn_o = 0; /* async for now */ 788 1.1.2.2 bouyer wbflush(); 789 1.1.2.2 bouyer } 790 1.1.2.2 bouyer 791 1.1.2.2 bouyer /* 792 1.1.2.2 bouyer * Start a SCSI command on a target. 793 1.1.2.2 bouyer */ 794 1.1.2.2 bouyer static void 795 1.1.2.2 bouyer asc_startcmd(asc, target) 796 1.1.2.2 bouyer asc_softc_t asc; 797 1.1.2.2 bouyer int target; 798 1.1.2.2 bouyer { 799 1.1.2.2 bouyer asc_regmap_t *regs; 800 1.1.2.2 bouyer State *state; 801 1.1.2.2 bouyer struct scsipi_xfer *scsicmd; 802 1.1.2.2 bouyer int i, len; 803 1.1.2.2 bouyer 804 1.1.2.2 bouyer /* 805 1.1.2.2 bouyer * See if another target is currently selected on this SCSI bus. 806 1.1.2.2 bouyer */ 807 1.1.2.2 bouyer if (asc->target >= 0) 808 1.1.2.2 bouyer return; 809 1.1.2.2 bouyer 810 1.1.2.2 bouyer regs = asc->regs; 811 1.1.2.2 bouyer 812 1.1.2.2 bouyer /* 813 1.1.2.2 bouyer * If a reselection is in progress, it is Ok to ignore it since 814 1.1.2.2 bouyer * the ASC will automatically cancel the command and flush 815 1.1.2.2 bouyer * the FIFO if the ASC is reselected before the command starts. 816 1.1.2.2 bouyer * If we try to use ASC_CMD_DISABLE_SEL, we can hang the system if 817 1.1.2.2 bouyer * a reselect occurs before starting the command. 818 1.1.2.2 bouyer */ 819 1.1.2.2 bouyer 820 1.1.2.2 bouyer asc->state = ASC_STATE_BUSY; 821 1.1.2.2 bouyer asc->target = target; 822 1.1.2.2 bouyer 823 1.1.2.2 bouyer /* cache some pointers */ 824 1.1.2.2 bouyer scsicmd = asc->cmd[target]; 825 1.1.2.2 bouyer state = &asc->st[target]; 826 1.1.2.2 bouyer 827 1.1.2.2 bouyer /* 828 1.1.2.2 bouyer * Init the chip and target state. 829 1.1.2.2 bouyer */ 830 1.1.2.2 bouyer state->flags = state->flags & (DID_SYNC | CHECK_SENSE); 831 1.1.2.2 bouyer state->script = (script_t *)0; 832 1.1.2.2 bouyer state->msg_out = SCSI_NO_OP; 833 1.1.2.2 bouyer 834 1.1.2.2 bouyer /* 835 1.1.2.2 bouyer * Set up for DMA of command output. Also need to flush cache. 836 1.1.2.2 bouyer */ 837 1.1.2.2 bouyer if(!(state->flags & CHECK_SENSE)) { 838 1.1.2.2 bouyer bcopy(scsicmd->cmd, &state->cmd, scsicmd->cmdlen); 839 1.1.2.2 bouyer state->cmdlen = scsicmd->cmdlen; 840 1.1.2.2 bouyer state->buf = (vaddr_t)scsicmd->data; 841 1.1.2.2 bouyer state->buflen = scsicmd->datalen; 842 1.1.2.2 bouyer } 843 1.1.2.2 bouyer len = state->cmdlen; 844 1.1.2.2 bouyer state->dmalen = len; 845 1.1.2.2 bouyer 846 1.1.2.2 bouyer #ifdef DEBUG 847 1.1.2.2 bouyer if (asc_debug > 1) { 848 1.1.2.2 bouyer printf("asc_startcmd: %s target %d cmd %x len %d\n", 849 1.1.2.2 bouyer asc->sc_dev.dv_xname, target, 850 1.1.2.2 bouyer state->cmd.opcode, state->buflen); 851 1.1.2.2 bouyer } 852 1.1.2.2 bouyer #endif 853 1.1.2.2 bouyer 854 1.1.2.2 bouyer /* check for simple SCSI command with no data transfer */ 855 1.1.2.2 bouyer if(state->flags & CHECK_SENSE) { 856 1.1.2.2 bouyer asc->script = &asc_scripts[SCRIPT_DATA_IN]; 857 1.1.2.2 bouyer state->flags |= DMA_IN; 858 1.1.2.2 bouyer } 859 1.1.2.2 bouyer else if (scsicmd->xs_control & XS_CTL_DATA_OUT) { 860 1.1.2.2 bouyer asc->script = &asc_scripts[SCRIPT_DATA_OUT]; 861 1.1.2.2 bouyer state->flags |= DMA_OUT; 862 1.1.2.2 bouyer } 863 1.1.2.2 bouyer else if (scsicmd->xs_control & XS_CTL_DATA_IN) { 864 1.1.2.2 bouyer asc->script = &asc_scripts[SCRIPT_DATA_IN]; 865 1.1.2.2 bouyer state->flags |= DMA_IN; 866 1.1.2.2 bouyer } 867 1.1.2.2 bouyer else if (state->buflen == 0) { 868 1.1.2.2 bouyer /* check for sync negotiation */ 869 1.1.2.2 bouyer if ((scsicmd->xs_status & /* SCSICMD_USE_SYNC */ 0) && 870 1.1.2.2 bouyer !(state->flags & DID_SYNC)) { 871 1.1.2.2 bouyer asc->script = &asc_scripts[SCRIPT_TRY_SYNC]; 872 1.1.2.2 bouyer state->flags |= TRY_SYNC; 873 1.1.2.2 bouyer } else 874 1.1.2.2 bouyer asc->script = &asc_scripts[SCRIPT_SIMPLE]; 875 1.1.2.2 bouyer state->buf = (vaddr_t)0; 876 1.1.2.2 bouyer } 877 1.1.2.2 bouyer 878 1.1.2.2 bouyer #ifdef DEBUG 879 1.1.2.2 bouyer asc_debug_cmd = state->cmd.opcode; 880 1.1.2.2 bouyer if (state->cmd.opcode == SCSI_READ_EXT) { 881 1.1.2.2 bouyer asc_debug_bn = (state->cmd.bytes[1] << 24) | 882 1.1.2.2 bouyer (state->cmd.bytes[2] << 16) | 883 1.1.2.2 bouyer (state->cmd.bytes[3] << 8) | 884 1.1.2.2 bouyer state->cmd.bytes[4]; 885 1.1.2.2 bouyer asc_debug_sz = (state->cmd.bytes[6] << 8) | state->cmd.bytes[7]; 886 1.1.2.2 bouyer } 887 1.1.2.2 bouyer asc_logp->status = PACK(asc->sc_dev.dv_unit, 0, 0, asc_debug_cmd); 888 1.1.2.2 bouyer asc_logp->target = asc->target; 889 1.1.2.2 bouyer asc_logp->state = asc->script - asc_scripts; 890 1.1.2.2 bouyer asc_logp->msg = SCSI_DIS_REC_IDENTIFY; 891 1.1.2.2 bouyer asc_logp->resid = scsicmd->datalen; 892 1.1.2.2 bouyer if (++asc_logp >= &asc_log[NLOG]) 893 1.1.2.2 bouyer asc_logp = asc_log; 894 1.1.2.2 bouyer #endif 895 1.1.2.2 bouyer 896 1.1.2.2 bouyer /* preload the FIFO with the message and command to be sent */ 897 1.1.2.2 bouyer regs->asc_fifo = SCSI_DIS_REC_IDENTIFY | 898 1.1.2.2 bouyer (scsicmd->sc_link->scsipi_scsi.lun & 0x07); 899 1.1.2.2 bouyer 900 1.1.2.2 bouyer for( i = 0; i < len; i++ ) { 901 1.1.2.2 bouyer regs->asc_fifo = ((caddr_t)&state->cmd)[i]; 902 1.1.2.2 bouyer } 903 1.1.2.2 bouyer ASC_TC_PUT(regs, 0, asc->is24bit); 904 1.1.2.2 bouyer readback(regs->asc_cmd); 905 1.1.2.2 bouyer regs->asc_cmd = ASC_CMD_DMA; 906 1.1.2.2 bouyer readback(regs->asc_cmd); 907 1.1.2.2 bouyer 908 1.1.2.2 bouyer regs->asc_dbus_id = target; 909 1.1.2.2 bouyer readback(regs->asc_dbus_id); 910 1.1.2.2 bouyer regs->asc_syn_p = state->sync_period; 911 1.1.2.2 bouyer readback(regs->asc_syn_p); 912 1.1.2.2 bouyer regs->asc_syn_o = state->sync_offset; 913 1.1.2.2 bouyer readback(regs->asc_syn_o); 914 1.1.2.2 bouyer 915 1.1.2.2 bouyer /*XXX PEFO */ 916 1.1.2.2 bouyer /* we are not using sync transfer now, need to check this if we will */ 917 1.1.2.2 bouyer 918 1.1.2.2 bouyer if (state->flags & TRY_SYNC) 919 1.1.2.2 bouyer regs->asc_cmd = ASC_CMD_SEL_ATN_STOP; 920 1.1.2.2 bouyer else 921 1.1.2.2 bouyer regs->asc_cmd = ASC_CMD_SEL_ATN; 922 1.1.2.2 bouyer readback(regs->asc_cmd); 923 1.1.2.2 bouyer } 924 1.1.2.2 bouyer 925 1.1.2.2 bouyer /* 926 1.1.2.2 bouyer * Interrupt routine 927 1.1.2.2 bouyer * Take interrupts from the chip 928 1.1.2.2 bouyer * 929 1.1.2.2 bouyer * Implementation: 930 1.1.2.2 bouyer * Move along the current command's script if 931 1.1.2.2 bouyer * all is well, invoke error handler if not. 932 1.1.2.2 bouyer */ 933 1.1.2.2 bouyer int 934 1.1.2.2 bouyer asc_intr(sc) 935 1.1.2.2 bouyer void *sc; 936 1.1.2.2 bouyer { 937 1.1.2.2 bouyer asc_softc_t asc = sc; 938 1.1.2.2 bouyer asc_regmap_t *regs = asc->regs; 939 1.1.2.2 bouyer State *state; 940 1.1.2.2 bouyer script_t *scpt; 941 1.1.2.2 bouyer int ss, ir, status; 942 1.1.2.2 bouyer 943 1.1.2.2 bouyer /* collect ephemeral information */ 944 1.1.2.2 bouyer status = regs->asc_status; 945 1.1.2.2 bouyer ss = regs->asc_ss; 946 1.1.2.2 bouyer 947 1.1.2.2 bouyer if ((status & ASC_CSR_INT) == 0) /* Make shure it's a real interrupt */ 948 1.1.2.2 bouyer return(0); 949 1.1.2.2 bouyer 950 1.1.2.2 bouyer ir = regs->asc_intr; /* this resets the previous two */ 951 1.1.2.2 bouyer scpt = asc->script; 952 1.1.2.2 bouyer 953 1.1.2.2 bouyer #ifdef DEBUG 954 1.1.2.2 bouyer asc_logp->status = PACK(asc->sc_dev.dv_unit, status, ss, ir); 955 1.1.2.2 bouyer asc_logp->target = (asc->state == ASC_STATE_BUSY) ? asc->target : -1; 956 1.1.2.2 bouyer asc_logp->state = scpt - asc_scripts; 957 1.1.2.2 bouyer asc_logp->msg = -1; 958 1.1.2.2 bouyer asc_logp->resid = 0; 959 1.1.2.2 bouyer if (++asc_logp >= &asc_log[NLOG]) 960 1.1.2.2 bouyer asc_logp = asc_log; 961 1.1.2.2 bouyer if (asc_debug > 2) 962 1.1.2.2 bouyer printf("asc_intr: status %x ss %x ir %x cond %d:%x\n", 963 1.1.2.2 bouyer status, ss, ir, scpt - asc_scripts, scpt->condition); 964 1.1.2.2 bouyer #endif 965 1.1.2.2 bouyer 966 1.1.2.2 bouyer /* check the expected state */ 967 1.1.2.2 bouyer if (SCRIPT_MATCH(ir, status) == scpt->condition) { 968 1.1.2.2 bouyer /* 969 1.1.2.2 bouyer * Perform the appropriate operation, then proceed. 970 1.1.2.2 bouyer */ 971 1.1.2.2 bouyer if ((*scpt->action)(asc, status, ss, ir)) { 972 1.1.2.2 bouyer regs->asc_cmd = scpt->command; 973 1.1.2.2 bouyer readback(regs->asc_cmd); 974 1.1.2.2 bouyer asc->script = scpt->next; 975 1.1.2.2 bouyer } 976 1.1.2.2 bouyer goto done; 977 1.1.2.2 bouyer } 978 1.1.2.2 bouyer 979 1.1.2.2 bouyer /* 980 1.1.2.2 bouyer * Check for parity error. 981 1.1.2.2 bouyer * Hardware will automatically set ATN 982 1.1.2.2 bouyer * to request the device for a MSG_OUT phase. 983 1.1.2.2 bouyer */ 984 1.1.2.2 bouyer if (status & ASC_CSR_PE) { 985 1.1.2.2 bouyer printf("%s: SCSI device %d: incomming parity error seen\n", 986 1.1.2.2 bouyer asc->sc_dev.dv_xname, asc->target); 987 1.1.2.2 bouyer asc->st[asc->target].flags |= PARITY_ERR; 988 1.1.2.2 bouyer } 989 1.1.2.2 bouyer 990 1.1.2.2 bouyer /* 991 1.1.2.2 bouyer * Check for gross error. 992 1.1.2.2 bouyer * Probably a bug in a device driver. 993 1.1.2.2 bouyer */ 994 1.1.2.2 bouyer if (status & ASC_CSR_GE) { 995 1.1.2.2 bouyer printf("%s: SCSI device %d: gross error\n", 996 1.1.2.2 bouyer asc->sc_dev.dv_xname, asc->target); 997 1.1.2.2 bouyer goto abort; 998 1.1.2.2 bouyer } 999 1.1.2.2 bouyer 1000 1.1.2.2 bouyer /* check for message in or out */ 1001 1.1.2.2 bouyer if ((ir & ~ASC_INT_FC) == ASC_INT_BS) { 1002 1.1.2.2 bouyer register int len, fifo; 1003 1.1.2.2 bouyer 1004 1.1.2.2 bouyer state = &asc->st[asc->target]; 1005 1.1.2.2 bouyer switch (ASC_PHASE(status)) { 1006 1.1.2.2 bouyer case ASC_PHASE_DATAI: 1007 1.1.2.2 bouyer case ASC_PHASE_DATAO: 1008 1.1.2.2 bouyer ASC_TC_GET(regs, len); 1009 1.1.2.2 bouyer fifo = regs->asc_flags & ASC_FLAGS_FIFO_CNT; 1010 1.1.2.2 bouyer printf("asc_intr: data overrun: buflen %d dmalen %d tc %d fifo %d\n", 1011 1.1.2.2 bouyer state->buflen, state->dmalen, len, fifo); 1012 1.1.2.2 bouyer goto abort; 1013 1.1.2.2 bouyer 1014 1.1.2.2 bouyer case ASC_PHASE_MSG_IN: 1015 1.1.2.2 bouyer break; 1016 1.1.2.2 bouyer 1017 1.1.2.2 bouyer case ASC_PHASE_MSG_OUT: 1018 1.1.2.2 bouyer /* 1019 1.1.2.2 bouyer * Check for parity error. 1020 1.1.2.2 bouyer * Hardware will automatically set ATN 1021 1.1.2.2 bouyer * to request the device for a MSG_OUT phase. 1022 1.1.2.2 bouyer */ 1023 1.1.2.2 bouyer if (state->flags & PARITY_ERR) { 1024 1.1.2.2 bouyer state->flags &= ~PARITY_ERR; 1025 1.1.2.2 bouyer state->msg_out = SCSI_MESSAGE_PARITY_ERROR; 1026 1.1.2.2 bouyer /* reset message in counter */ 1027 1.1.2.2 bouyer state->msglen = 0; 1028 1.1.2.2 bouyer } else 1029 1.1.2.2 bouyer state->msg_out = SCSI_NO_OP; 1030 1.1.2.2 bouyer regs->asc_fifo = state->msg_out; 1031 1.1.2.2 bouyer regs->asc_cmd = ASC_CMD_XFER_INFO; 1032 1.1.2.2 bouyer readback(regs->asc_cmd); 1033 1.1.2.2 bouyer goto done; 1034 1.1.2.2 bouyer 1035 1.1.2.2 bouyer case ASC_PHASE_STATUS: 1036 1.1.2.2 bouyer /* probably an error in the SCSI command */ 1037 1.1.2.2 bouyer asc->script = &asc_scripts[SCRIPT_GET_STATUS]; 1038 1.1.2.2 bouyer regs->asc_cmd = ASC_CMD_I_COMPLETE; 1039 1.1.2.2 bouyer readback(regs->asc_cmd); 1040 1.1.2.2 bouyer goto done; 1041 1.1.2.2 bouyer 1042 1.1.2.2 bouyer default: 1043 1.1.2.2 bouyer goto abort; 1044 1.1.2.2 bouyer } 1045 1.1.2.2 bouyer 1046 1.1.2.2 bouyer if (state->script) 1047 1.1.2.2 bouyer goto abort; 1048 1.1.2.2 bouyer 1049 1.1.2.2 bouyer /* 1050 1.1.2.2 bouyer * OK, message coming in clean up whatever is going on. 1051 1.1.2.2 bouyer * Get number of bytes left to transfered from byte counter 1052 1.1.2.2 bouyer * counter decrements when data is trf on the SCSI bus 1053 1.1.2.2 bouyer */ 1054 1.1.2.2 bouyer ASC_TC_GET(regs, len); 1055 1.1.2.2 bouyer fifo = regs->asc_flags & ASC_FLAGS_FIFO_CNT; 1056 1.1.2.2 bouyer /* flush any data in the FIFO */ 1057 1.1.2.2 bouyer if (fifo && !(state->flags & DMA_IN_PROGRESS)) { 1058 1.1.2.2 bouyer printf("asc_intr: fifo flush %d len %d fifo %x\n", fifo, len, regs->asc_fifo); 1059 1.1.2.2 bouyer regs->asc_cmd = ASC_CMD_FLUSH; 1060 1.1.2.2 bouyer readback(regs->asc_cmd); 1061 1.1.2.2 bouyer DELAY(2); 1062 1.1.2.2 bouyer } 1063 1.1.2.2 bouyer else if (fifo && state->flags & DMA_IN_PROGRESS) { 1064 1.1.2.2 bouyer if (state->flags & DMA_OUT) { 1065 1.1.2.2 bouyer len += fifo; /* Bytes dma'ed but not sent */ 1066 1.1.2.2 bouyer } 1067 1.1.2.2 bouyer else if (state->flags & DMA_IN) { 1068 1.1.2.2 bouyer printf("asc_intr: IN: dmalen %d len %d fifo %d\n", 1069 1.1.2.2 bouyer state->dmalen, len, fifo); /* XXX */ 1070 1.1.2.2 bouyer } 1071 1.1.2.2 bouyer regs->asc_cmd = ASC_CMD_FLUSH; 1072 1.1.2.2 bouyer readback(regs->asc_cmd); 1073 1.1.2.2 bouyer DELAY(2); 1074 1.1.2.2 bouyer } 1075 1.1.2.2 bouyer if (len && (state->flags & DMA_IN_PROGRESS)) { 1076 1.1.2.2 bouyer /* save number of bytes still to be sent or received */ 1077 1.1.2.2 bouyer state->dmaresid = len; 1078 1.1.2.2 bouyer state->flags &= ~DMA_IN_PROGRESS; 1079 1.1.2.2 bouyer ASC_TC_PUT(regs, 0, asc->is24bit); 1080 1.1.2.2 bouyer #ifdef DEBUG 1081 1.1.2.2 bouyer if (asc_logp == asc_log) 1082 1.1.2.2 bouyer asc_log[NLOG - 1].resid = len; 1083 1.1.2.2 bouyer else 1084 1.1.2.2 bouyer asc_logp[-1].resid = len; 1085 1.1.2.2 bouyer #endif 1086 1.1.2.2 bouyer /* setup state to resume to */ 1087 1.1.2.2 bouyer if (state->flags & DMA_IN) { 1088 1.1.2.2 bouyer /* 1089 1.1.2.2 bouyer * Since the ASC_CNFG3_SRB bit of the 1090 1.1.2.2 bouyer * cnfg3 register bit is not set, 1091 1.1.2.2 bouyer * we just transferred an extra byte. 1092 1.1.2.2 bouyer * Since we can't resume on an odd byte 1093 1.1.2.2 bouyer * boundary, we copy the valid data out 1094 1.1.2.2 bouyer * and resume DMA at the start address. 1095 1.1.2.2 bouyer */ 1096 1.1.2.2 bouyer if (len & 1) { 1097 1.1.2.2 bouyer printf("asc_intr: msg in len %d (fifo %d)\n", 1098 1.1.2.2 bouyer len, fifo); /* XXX */ 1099 1.1.2.2 bouyer len = state->dmalen - len; 1100 1.1.2.2 bouyer goto do_in; 1101 1.1.2.2 bouyer } 1102 1.1.2.2 bouyer state->script = 1103 1.1.2.2 bouyer &asc_scripts[SCRIPT_RESUME_DMA_IN]; 1104 1.1.2.2 bouyer } else if (state->flags & DMA_OUT) 1105 1.1.2.2 bouyer state->script = 1106 1.1.2.2 bouyer &asc_scripts[SCRIPT_RESUME_DMA_OUT]; 1107 1.1.2.2 bouyer else 1108 1.1.2.2 bouyer state->script = asc->script; 1109 1.1.2.2 bouyer } else if (state->flags & DMA_IN) { 1110 1.1.2.2 bouyer if (len) { 1111 1.1.2.2 bouyer #ifdef DEBUG 1112 1.1.2.2 bouyer printf("asc_intr: 1: bn %d len %d (fifo %d)\n", 1113 1.1.2.2 bouyer asc_debug_bn, len, fifo); /* XXX */ 1114 1.1.2.2 bouyer #endif 1115 1.1.2.2 bouyer goto abort; 1116 1.1.2.2 bouyer } 1117 1.1.2.2 bouyer /* setup state to resume to */ 1118 1.1.2.2 bouyer if (state->flags & DMA_IN_PROGRESS) { 1119 1.1.2.2 bouyer len = state->dmalen; 1120 1.1.2.2 bouyer state->flags &= ~DMA_IN_PROGRESS; 1121 1.1.2.2 bouyer do_in: 1122 1.1.2.2 bouyer DMA_END(asc->dma); 1123 1.1.2.2 bouyer state->buf += len; 1124 1.1.2.2 bouyer state->buflen -= len; 1125 1.1.2.2 bouyer } 1126 1.1.2.2 bouyer if (state->buflen) 1127 1.1.2.2 bouyer state->script = 1128 1.1.2.2 bouyer &asc_scripts[SCRIPT_RESUME_IN]; 1129 1.1.2.2 bouyer else 1130 1.1.2.2 bouyer state->script = 1131 1.1.2.2 bouyer &asc_scripts[SCRIPT_RESUME_NO_DATA]; 1132 1.1.2.2 bouyer } else if (state->flags & DMA_OUT) { 1133 1.1.2.2 bouyer if (len) { 1134 1.1.2.2 bouyer printf("asc_intr: 2: len %d (fifo %d)\n", len, 1135 1.1.2.2 bouyer fifo); /* XXX */ 1136 1.1.2.2 bouyer /* XXX THEO */ 1137 1.1.2.2 bouyer #if 1 1138 1.1.2.2 bouyer regs->asc_cmd = ASC_CMD_FLUSH; 1139 1.1.2.2 bouyer readback(regs->asc_cmd); 1140 1.1.2.2 bouyer DELAY(2); 1141 1.1.2.2 bouyer len = 0; 1142 1.1.2.2 bouyer #else 1143 1.1.2.2 bouyer goto abort; 1144 1.1.2.2 bouyer #endif 1145 1.1.2.2 bouyer } 1146 1.1.2.2 bouyer /* 1147 1.1.2.2 bouyer * If this is the last chunk, the next expected 1148 1.1.2.2 bouyer * state is to get status. 1149 1.1.2.2 bouyer */ 1150 1.1.2.2 bouyer if (state->flags & DMA_IN_PROGRESS) { 1151 1.1.2.2 bouyer state->flags &= ~DMA_IN_PROGRESS; 1152 1.1.2.2 bouyer DMA_END(asc->dma); 1153 1.1.2.2 bouyer len = state->dmalen; 1154 1.1.2.2 bouyer state->buf += len; 1155 1.1.2.2 bouyer state->buflen -= len; 1156 1.1.2.2 bouyer } 1157 1.1.2.2 bouyer if (state->buflen) 1158 1.1.2.2 bouyer state->script = 1159 1.1.2.2 bouyer &asc_scripts[SCRIPT_RESUME_OUT]; 1160 1.1.2.2 bouyer else 1161 1.1.2.2 bouyer state->script = 1162 1.1.2.2 bouyer &asc_scripts[SCRIPT_RESUME_NO_DATA]; 1163 1.1.2.2 bouyer } else if (asc->script == &asc_scripts[SCRIPT_SIMPLE]) 1164 1.1.2.2 bouyer state->script = &asc_scripts[SCRIPT_RESUME_NO_DATA]; 1165 1.1.2.2 bouyer else 1166 1.1.2.2 bouyer state->script = asc->script; 1167 1.1.2.2 bouyer 1168 1.1.2.2 bouyer /* setup to receive a message */ 1169 1.1.2.2 bouyer asc->script = &asc_scripts[SCRIPT_MSG_IN]; 1170 1.1.2.2 bouyer state->msglen = 0; 1171 1.1.2.2 bouyer regs->asc_cmd = ASC_CMD_XFER_INFO; 1172 1.1.2.2 bouyer readback(regs->asc_cmd); 1173 1.1.2.2 bouyer goto done; 1174 1.1.2.2 bouyer } 1175 1.1.2.2 bouyer 1176 1.1.2.2 bouyer /* check for SCSI bus reset */ 1177 1.1.2.2 bouyer if (ir & ASC_INT_RESET) { 1178 1.1.2.2 bouyer register int i; 1179 1.1.2.2 bouyer 1180 1.1.2.2 bouyer printf("%s: SCSI bus reset!!\n", asc->sc_dev.dv_xname); 1181 1.1.2.2 bouyer /* need to flush any pending commands */ 1182 1.1.2.2 bouyer for (i = 0; i < ASC_NCMD; i++) { 1183 1.1.2.2 bouyer if (!asc->cmd[i]) 1184 1.1.2.2 bouyer continue; 1185 1.1.2.2 bouyer asc->cmd[i]->error = XS_DRIVER_STUFFUP; 1186 1.1.2.2 bouyer asc_end(asc, 0, 0, 0); 1187 1.1.2.2 bouyer } 1188 1.1.2.2 bouyer /* rearbitrate synchronous offset */ 1189 1.1.2.2 bouyer for (i = 0; i < ASC_NCMD; i++) { 1190 1.1.2.2 bouyer asc->st[i].sync_offset = 0; 1191 1.1.2.2 bouyer asc->st[i].flags = 0; 1192 1.1.2.2 bouyer } 1193 1.1.2.2 bouyer asc->target = -1; 1194 1.1.2.2 bouyer return(1); 1195 1.1.2.2 bouyer } 1196 1.1.2.2 bouyer 1197 1.1.2.2 bouyer /* check for command errors */ 1198 1.1.2.2 bouyer if (ir & ASC_INT_ILL) 1199 1.1.2.2 bouyer goto abort; 1200 1.1.2.2 bouyer 1201 1.1.2.2 bouyer /* check for disconnect */ 1202 1.1.2.2 bouyer if (ir & ASC_INT_DISC) { 1203 1.1.2.2 bouyer state = &asc->st[asc->target]; 1204 1.1.2.2 bouyer switch (asc->script - asc_scripts) { 1205 1.1.2.2 bouyer case SCRIPT_DONE: 1206 1.1.2.2 bouyer case SCRIPT_DISCONNECT: 1207 1.1.2.2 bouyer /* 1208 1.1.2.2 bouyer * Disconnects can happen normally when the 1209 1.1.2.2 bouyer * command is complete with the phase being 1210 1.1.2.2 bouyer * either ASC_PHASE_DATAO or ASC_PHASE_MSG_IN. 1211 1.1.2.2 bouyer * The SCRIPT_MATCH() only checks for one phase 1212 1.1.2.2 bouyer * so we can wind up here. 1213 1.1.2.2 bouyer * Perform the appropriate operation, then proceed. 1214 1.1.2.2 bouyer */ 1215 1.1.2.2 bouyer if ((*scpt->action)(asc, status, ss, ir)) { 1216 1.1.2.2 bouyer regs->asc_cmd = scpt->command; 1217 1.1.2.2 bouyer readback(regs->asc_cmd); 1218 1.1.2.2 bouyer asc->script = scpt->next; 1219 1.1.2.2 bouyer } 1220 1.1.2.2 bouyer goto done; 1221 1.1.2.2 bouyer 1222 1.1.2.2 bouyer case SCRIPT_TRY_SYNC: 1223 1.1.2.2 bouyer case SCRIPT_SIMPLE: 1224 1.1.2.2 bouyer case SCRIPT_DATA_IN: 1225 1.1.2.2 bouyer case SCRIPT_DATA_OUT: /* one of the starting scripts */ 1226 1.1.2.2 bouyer if (ASC_SS(ss) == 0) { 1227 1.1.2.2 bouyer /* device did not respond */ 1228 1.1.2.2 bouyer if (regs->asc_flags & ASC_FLAGS_FIFO_CNT) { 1229 1.1.2.2 bouyer regs->asc_cmd = ASC_CMD_FLUSH; 1230 1.1.2.2 bouyer readback(regs->asc_cmd); 1231 1.1.2.2 bouyer } 1232 1.1.2.2 bouyer asc->cmd[asc->target]->error = XS_DRIVER_STUFFUP; 1233 1.1.2.2 bouyer asc_end(asc, status, ss, ir); 1234 1.1.2.2 bouyer return(1); 1235 1.1.2.2 bouyer } 1236 1.1.2.2 bouyer /* FALLTHROUGH */ 1237 1.1.2.2 bouyer 1238 1.1.2.2 bouyer default: 1239 1.1.2.2 bouyer printf("%s: SCSI device %d: unexpected disconnect\n", 1240 1.1.2.2 bouyer asc->sc_dev.dv_xname, asc->target); 1241 1.1.2.2 bouyer #ifdef DEBUG 1242 1.1.2.2 bouyer asc_DumpLog("asc_disc"); 1243 1.1.2.2 bouyer #endif 1244 1.1.2.2 bouyer /* 1245 1.1.2.2 bouyer * On rare occasions my RZ24 does a disconnect during 1246 1.1.2.2 bouyer * data in phase and the following seems to keep it 1247 1.1.2.2 bouyer * happy. 1248 1.1.2.2 bouyer * XXX Should a scsi disk ever do this?? 1249 1.1.2.2 bouyer */ 1250 1.1.2.2 bouyer asc->script = &asc_scripts[SCRIPT_RESEL]; 1251 1.1.2.2 bouyer asc->state = ASC_STATE_RESEL; 1252 1.1.2.2 bouyer state->flags |= DISCONN; 1253 1.1.2.2 bouyer regs->asc_cmd = ASC_CMD_ENABLE_SEL; 1254 1.1.2.2 bouyer readback(regs->asc_cmd); 1255 1.1.2.2 bouyer return(1); 1256 1.1.2.2 bouyer } 1257 1.1.2.2 bouyer } 1258 1.1.2.2 bouyer 1259 1.1.2.2 bouyer /* check for reselect */ 1260 1.1.2.2 bouyer if (ir & ASC_INT_RESEL) { 1261 1.1.2.2 bouyer unsigned fifo, id, msg; 1262 1.1.2.2 bouyer 1263 1.1.2.2 bouyer fifo = regs->asc_flags & ASC_FLAGS_FIFO_CNT; 1264 1.1.2.2 bouyer if (fifo < 2) 1265 1.1.2.2 bouyer goto abort; 1266 1.1.2.2 bouyer /* read unencoded SCSI ID and convert to binary */ 1267 1.1.2.2 bouyer msg = regs->asc_fifo & asc->myidmask; 1268 1.1.2.2 bouyer for (id = 0; (msg & 1) == 0; id++) 1269 1.1.2.2 bouyer msg >>= 1; 1270 1.1.2.2 bouyer /* read identify message */ 1271 1.1.2.2 bouyer msg = regs->asc_fifo; 1272 1.1.2.2 bouyer #ifdef DEBUG 1273 1.1.2.2 bouyer if (asc_logp == asc_log) 1274 1.1.2.2 bouyer asc_log[NLOG - 1].msg = msg; 1275 1.1.2.2 bouyer else 1276 1.1.2.2 bouyer asc_logp[-1].msg = msg; 1277 1.1.2.2 bouyer #endif 1278 1.1.2.2 bouyer asc->state = ASC_STATE_BUSY; 1279 1.1.2.2 bouyer asc->target = id; 1280 1.1.2.2 bouyer state = &asc->st[id]; 1281 1.1.2.2 bouyer asc->script = state->script; 1282 1.1.2.2 bouyer state->script = (script_t *)0; 1283 1.1.2.2 bouyer if (!(state->flags & DISCONN)) 1284 1.1.2.2 bouyer goto abort; 1285 1.1.2.2 bouyer state->flags &= ~DISCONN; 1286 1.1.2.2 bouyer regs->asc_syn_p = state->sync_period; 1287 1.1.2.2 bouyer regs->asc_syn_o = state->sync_offset; 1288 1.1.2.2 bouyer regs->asc_cmd = ASC_CMD_MSG_ACPT; 1289 1.1.2.2 bouyer readback(regs->asc_cmd); 1290 1.1.2.2 bouyer goto done; 1291 1.1.2.2 bouyer } 1292 1.1.2.2 bouyer 1293 1.1.2.2 bouyer /* check if we are being selected as a target */ 1294 1.1.2.2 bouyer if (ir & (ASC_INT_SEL | ASC_INT_SEL_ATN)) 1295 1.1.2.2 bouyer goto abort; 1296 1.1.2.2 bouyer 1297 1.1.2.2 bouyer /* 1298 1.1.2.2 bouyer * 'ir' must be just ASC_INT_FC. 1299 1.1.2.2 bouyer * This is normal if canceling an ASC_ENABLE_SEL. 1300 1.1.2.2 bouyer */ 1301 1.1.2.2 bouyer 1302 1.1.2.2 bouyer done: 1303 1.1.2.2 bouyer wbflush(); 1304 1.1.2.2 bouyer /* 1305 1.1.2.2 bouyer * If the next interrupt comes in immediatly the interrupt 1306 1.1.2.2 bouyer * dispatcher (which we are returning to) will catch it 1307 1.1.2.2 bouyer * before returning to the interrupted code. 1308 1.1.2.2 bouyer */ 1309 1.1.2.2 bouyer return(1); 1310 1.1.2.2 bouyer 1311 1.1.2.2 bouyer abort: 1312 1.1.2.2 bouyer #ifdef DEBUG 1313 1.1.2.2 bouyer asc_DumpLog("asc_intr"); 1314 1.1.2.2 bouyer #endif 1315 1.1.2.2 bouyer panic("asc_intr"); 1316 1.1.2.2 bouyer return(1); 1317 1.1.2.2 bouyer } 1318 1.1.2.2 bouyer 1319 1.1.2.2 bouyer /* 1320 1.1.2.2 bouyer * All the many little things that the interrupt 1321 1.1.2.2 bouyer * routine might switch to. 1322 1.1.2.2 bouyer */ 1323 1.1.2.2 bouyer 1324 1.1.2.2 bouyer /* ARGSUSED */ 1325 1.1.2.2 bouyer static int 1326 1.1.2.2 bouyer script_nop(asc, status, ss, ir) 1327 1.1.2.2 bouyer asc_softc_t asc; 1328 1.1.2.2 bouyer int status, ss, ir; 1329 1.1.2.2 bouyer { 1330 1.1.2.2 bouyer return (1); 1331 1.1.2.2 bouyer } 1332 1.1.2.2 bouyer 1333 1.1.2.2 bouyer /* ARGSUSED */ 1334 1.1.2.2 bouyer static int 1335 1.1.2.2 bouyer asc_get_status(asc, status, ss, ir) 1336 1.1.2.2 bouyer register asc_softc_t asc; 1337 1.1.2.2 bouyer register int status, ss, ir; 1338 1.1.2.2 bouyer { 1339 1.1.2.2 bouyer register asc_regmap_t *regs = asc->regs; 1340 1.1.2.2 bouyer register int data; 1341 1.1.2.2 bouyer 1342 1.1.2.2 bouyer /* 1343 1.1.2.2 bouyer * Get the last two bytes in the FIFO. 1344 1.1.2.2 bouyer */ 1345 1.1.2.2 bouyer if ((data = regs->asc_flags & ASC_FLAGS_FIFO_CNT) != 2) { 1346 1.1.2.2 bouyer printf("asc_get_status: cmdreg %x, fifo cnt %d\n", 1347 1.1.2.2 bouyer regs->asc_cmd, data); /* XXX */ 1348 1.1.2.2 bouyer #ifdef DEBUG 1349 1.1.2.2 bouyer asc_DumpLog("get_status"); /* XXX */ 1350 1.1.2.2 bouyer #endif 1351 1.1.2.2 bouyer if (data < 2) { 1352 1.1.2.2 bouyer asc->regs->asc_cmd = ASC_CMD_MSG_ACPT; 1353 1.1.2.2 bouyer readback(asc->regs->asc_cmd); 1354 1.1.2.2 bouyer return (0); 1355 1.1.2.2 bouyer } 1356 1.1.2.2 bouyer do { 1357 1.1.2.2 bouyer data = regs->asc_fifo; 1358 1.1.2.2 bouyer } while ((regs->asc_flags & ASC_FLAGS_FIFO_CNT) > 2); 1359 1.1.2.2 bouyer } 1360 1.1.2.2 bouyer 1361 1.1.2.2 bouyer /* save the status byte */ 1362 1.1.2.2 bouyer asc->st[asc->target].statusByte = data = regs->asc_fifo; 1363 1.1.2.2 bouyer #ifdef DEBUG 1364 1.1.2.2 bouyer if (asc_logp == asc_log) 1365 1.1.2.2 bouyer asc_log[NLOG - 1].msg = data; 1366 1.1.2.2 bouyer else 1367 1.1.2.2 bouyer asc_logp[-1].msg = data; 1368 1.1.2.2 bouyer #endif 1369 1.1.2.2 bouyer 1370 1.1.2.2 bouyer /* get the (presumed) command_complete message */ 1371 1.1.2.2 bouyer if ((data = regs->asc_fifo) == SCSI_COMMAND_COMPLETE) 1372 1.1.2.2 bouyer return (1); 1373 1.1.2.2 bouyer 1374 1.1.2.2 bouyer #ifdef DEBUG 1375 1.1.2.2 bouyer printf("asc_get_status: status %x cmd %x\n", 1376 1.1.2.2 bouyer asc->st[asc->target].statusByte, data); 1377 1.1.2.2 bouyer asc_DumpLog("asc_get_status"); 1378 1.1.2.2 bouyer #endif 1379 1.1.2.2 bouyer return (0); 1380 1.1.2.2 bouyer } 1381 1.1.2.2 bouyer 1382 1.1.2.2 bouyer /* ARGSUSED */ 1383 1.1.2.2 bouyer static int 1384 1.1.2.2 bouyer asc_end(asc, status, ss, ir) 1385 1.1.2.2 bouyer asc_softc_t asc; 1386 1.1.2.2 bouyer int status, ss, ir; 1387 1.1.2.2 bouyer { 1388 1.1.2.2 bouyer struct scsipi_xfer *scsicmd; 1389 1.1.2.2 bouyer struct scsipi_link *sc_link; 1390 1.1.2.2 bouyer State *state; 1391 1.1.2.2 bouyer int i, target; 1392 1.1.2.2 bouyer 1393 1.1.2.2 bouyer asc->state = ASC_STATE_IDLE; 1394 1.1.2.2 bouyer target = asc->target; 1395 1.1.2.2 bouyer asc->target = -1; 1396 1.1.2.2 bouyer scsicmd = asc->cmd[target]; 1397 1.1.2.2 bouyer sc_link = scsicmd->sc_link; 1398 1.1.2.2 bouyer asc->cmd[target] = (struct scsipi_xfer *)0; 1399 1.1.2.2 bouyer state = &asc->st[target]; 1400 1.1.2.2 bouyer 1401 1.1.2.2 bouyer #ifdef DEBUG 1402 1.1.2.2 bouyer if (asc_debug > 1) { 1403 1.1.2.2 bouyer printf("asc_end: %s target %d cmd %x err %d resid %d\n", 1404 1.1.2.2 bouyer asc->sc_dev.dv_xname, target, 1405 1.1.2.2 bouyer state->cmd.opcode, scsicmd->error, state->buflen); 1406 1.1.2.2 bouyer } 1407 1.1.2.2 bouyer #endif 1408 1.1.2.2 bouyer #ifdef DIAGNOSTIC 1409 1.1.2.2 bouyer if (target < 0 || !scsicmd) 1410 1.1.2.2 bouyer panic("asc_end"); 1411 1.1.2.2 bouyer #endif 1412 1.1.2.2 bouyer 1413 1.1.2.2 bouyer /* look for disconnected devices */ 1414 1.1.2.2 bouyer for (i = 0; i < ASC_NCMD; i++) { 1415 1.1.2.2 bouyer if (!asc->cmd[i] || !(asc->st[i].flags & DISCONN)) 1416 1.1.2.2 bouyer continue; 1417 1.1.2.2 bouyer asc->regs->asc_cmd = ASC_CMD_ENABLE_SEL; 1418 1.1.2.2 bouyer readback(asc->regs->asc_cmd); 1419 1.1.2.2 bouyer asc->state = ASC_STATE_RESEL; 1420 1.1.2.2 bouyer asc->script = &asc_scripts[SCRIPT_RESEL]; 1421 1.1.2.2 bouyer break; 1422 1.1.2.2 bouyer } 1423 1.1.2.2 bouyer 1424 1.1.2.2 bouyer if(scsicmd->error == XS_NOERROR && !(state->flags & CHECK_SENSE)) { 1425 1.1.2.2 bouyer if((state->statusByte & ST_MASK) == SCSI_CHECK) { 1426 1.1.2.2 bouyer struct scsipi_sense *ss = (void *)&state->cmd; 1427 1.1.2.2 bouyer /* Save return values */ 1428 1.1.2.2 bouyer scsicmd->resid = state->buflen; 1429 1.1.2.2 bouyer scsicmd->status = state->statusByte; 1430 1.1.2.2 bouyer /* Set up sense request command */ 1431 1.1.2.2 bouyer bzero(ss, sizeof(*ss)); 1432 1.1.2.2 bouyer ss->opcode = REQUEST_SENSE; 1433 1.1.2.2 bouyer ss->byte2 = sc_link->scsipi_scsi.lun << 5; 1434 1.1.2.2 bouyer ss->length = sizeof(struct scsipi_sense_data); 1435 1.1.2.2 bouyer state->cmdlen = sizeof(*ss); 1436 1.1.2.2 bouyer state->buf = (vaddr_t)&scsicmd->sense.scsi_sense; 1437 1.1.2.2 bouyer state->buflen = sizeof(struct scsipi_sense_data); 1438 1.1.2.2 bouyer state->flags |= CHECK_SENSE; 1439 1.1.2.2 bouyer mips3_HitFlushDCache(state->buf, state->buflen); 1440 1.1.2.2 bouyer asc->cmd[target] = scsicmd; 1441 1.1.2.2 bouyer asc_startcmd(asc, target); 1442 1.1.2.2 bouyer return(0); 1443 1.1.2.2 bouyer } 1444 1.1.2.2 bouyer } 1445 1.1.2.2 bouyer 1446 1.1.2.2 bouyer if(scsicmd->error == XS_NOERROR && (state->flags & CHECK_SENSE)) { 1447 1.1.2.2 bouyer scsicmd->error = XS_SENSE; 1448 1.1.2.2 bouyer } 1449 1.1.2.2 bouyer else { 1450 1.1.2.2 bouyer scsicmd->resid = state->buflen; 1451 1.1.2.2 bouyer } 1452 1.1.2.2 bouyer state->flags &= ~CHECK_SENSE; 1453 1.1.2.2 bouyer 1454 1.1.2.2 bouyer /* 1455 1.1.2.2 bouyer * Look for another device that is ready. 1456 1.1.2.2 bouyer * May want to keep last one started and increment for fairness 1457 1.1.2.2 bouyer * rather than always starting at zero. 1458 1.1.2.2 bouyer */ 1459 1.1.2.2 bouyer for (i = 0; i < ASC_NCMD; i++) { 1460 1.1.2.2 bouyer if (asc->cmd[i] == 0 && asc->cmdq[i] != 0) { 1461 1.1.2.2 bouyer asc->cmd[i] = asc->cmdq[i]; 1462 1.1.2.2 bouyer asc->cmdq[i] = 0; 1463 1.1.2.2 bouyer } 1464 1.1.2.2 bouyer } 1465 1.1.2.2 bouyer for (i = 0; i < ASC_NCMD; i++) { 1466 1.1.2.2 bouyer /* don't restart a disconnected command */ 1467 1.1.2.2 bouyer if (!asc->cmd[i] || (asc->st[i].flags & DISCONN)) 1468 1.1.2.2 bouyer continue; 1469 1.1.2.2 bouyer asc_startcmd(asc, i); 1470 1.1.2.2 bouyer break; 1471 1.1.2.2 bouyer } 1472 1.1.2.2 bouyer 1473 1.1.2.2 bouyer /* signal device driver that the command is done */ 1474 1.1.2.2 bouyer scsicmd->xs_status |= XS_STS_DONE; 1475 1.1.2.2 bouyer scsipi_done(scsicmd); 1476 1.1.2.2 bouyer 1477 1.1.2.2 bouyer return (0); 1478 1.1.2.2 bouyer } 1479 1.1.2.2 bouyer 1480 1.1.2.2 bouyer /* ARGSUSED */ 1481 1.1.2.2 bouyer static int 1482 1.1.2.2 bouyer asc_dma_in(asc, status, ss, ir) 1483 1.1.2.2 bouyer register asc_softc_t asc; 1484 1.1.2.2 bouyer register int status, ss, ir; 1485 1.1.2.2 bouyer { 1486 1.1.2.2 bouyer register asc_regmap_t *regs = asc->regs; 1487 1.1.2.2 bouyer register State *state = &asc->st[asc->target]; 1488 1.1.2.2 bouyer register int len; 1489 1.1.2.2 bouyer 1490 1.1.2.2 bouyer /* check for previous chunk in buffer */ 1491 1.1.2.2 bouyer if (state->flags & DMA_IN_PROGRESS) { 1492 1.1.2.2 bouyer /* 1493 1.1.2.2 bouyer * Only count bytes that have been copied to memory. 1494 1.1.2.2 bouyer * There may be some bytes in the FIFO if synchonous transfers 1495 1.1.2.2 bouyer * are in progress. 1496 1.1.2.2 bouyer */ 1497 1.1.2.2 bouyer DMA_END(asc->dma); 1498 1.1.2.2 bouyer ASC_TC_GET(regs, len); 1499 1.1.2.2 bouyer len = state->dmalen - len; 1500 1.1.2.2 bouyer state->buf += len; 1501 1.1.2.2 bouyer state->buflen -= len; 1502 1.1.2.2 bouyer } 1503 1.1.2.2 bouyer 1504 1.1.2.2 bouyer /* setup to start reading the next chunk */ 1505 1.1.2.2 bouyer len = state->buflen; 1506 1.1.2.2 bouyer #ifdef DEBUG 1507 1.1.2.2 bouyer if (asc_logp == asc_log) 1508 1.1.2.2 bouyer asc_log[NLOG - 1].resid = len; 1509 1.1.2.2 bouyer else 1510 1.1.2.2 bouyer asc_logp[-1].resid = len; 1511 1.1.2.2 bouyer #endif 1512 1.1.2.2 bouyer if (len > state->dmaBufSize) 1513 1.1.2.2 bouyer len = state->dmaBufSize; 1514 1.1.2.2 bouyer state->dmalen = len; 1515 1.1.2.2 bouyer DMA_START(asc->dma, (caddr_t)state->buf, len, DMA_FROM_DEV); 1516 1.1.2.2 bouyer ASC_TC_PUT(regs, len, asc->is24bit); 1517 1.1.2.2 bouyer #ifdef DEBUG 1518 1.1.2.2 bouyer if (asc_debug > 2) 1519 1.1.2.2 bouyer printf("asc_dma_in: buflen %d, len %d\n", state->buflen, len); 1520 1.1.2.2 bouyer #endif 1521 1.1.2.2 bouyer 1522 1.1.2.2 bouyer /* check for next chunk */ 1523 1.1.2.2 bouyer state->flags |= DMA_IN_PROGRESS; 1524 1.1.2.2 bouyer if (len != state->buflen) { 1525 1.1.2.2 bouyer regs->asc_cmd = ASC_CMD_XFER_INFO | ASC_CMD_DMA; 1526 1.1.2.2 bouyer readback(regs->asc_cmd); 1527 1.1.2.2 bouyer asc->script = &asc_scripts[SCRIPT_CONTINUE_IN]; 1528 1.1.2.2 bouyer return (0); 1529 1.1.2.2 bouyer } 1530 1.1.2.2 bouyer return (1); 1531 1.1.2.2 bouyer } 1532 1.1.2.2 bouyer 1533 1.1.2.2 bouyer /* ARGSUSED */ 1534 1.1.2.2 bouyer static int 1535 1.1.2.2 bouyer asc_last_dma_in(asc, status, ss, ir) 1536 1.1.2.2 bouyer register asc_softc_t asc; 1537 1.1.2.2 bouyer register int status, ss, ir; 1538 1.1.2.2 bouyer { 1539 1.1.2.2 bouyer register asc_regmap_t *regs = asc->regs; 1540 1.1.2.2 bouyer register State *state = &asc->st[asc->target]; 1541 1.1.2.2 bouyer register int len, fifo; 1542 1.1.2.2 bouyer 1543 1.1.2.2 bouyer DMA_END(asc->dma); 1544 1.1.2.2 bouyer ASC_TC_GET(regs, len); 1545 1.1.2.2 bouyer fifo = regs->asc_flags & ASC_FLAGS_FIFO_CNT; 1546 1.1.2.2 bouyer #ifdef DEBUG 1547 1.1.2.2 bouyer if (asc_debug > 2) 1548 1.1.2.2 bouyer printf("asc_last_dma_in: buflen %d dmalen %d tc %d fifo %d\n", 1549 1.1.2.2 bouyer state->buflen, state->dmalen, len, fifo); 1550 1.1.2.2 bouyer #endif 1551 1.1.2.2 bouyer if (fifo) { 1552 1.1.2.2 bouyer /* device must be trying to send more than we expect */ 1553 1.1.2.2 bouyer regs->asc_cmd = ASC_CMD_FLUSH; 1554 1.1.2.2 bouyer readback(regs->asc_cmd); 1555 1.1.2.2 bouyer } 1556 1.1.2.2 bouyer state->flags &= ~DMA_IN_PROGRESS; 1557 1.1.2.2 bouyer len = state->dmalen - len; 1558 1.1.2.2 bouyer state->buflen -= len; 1559 1.1.2.2 bouyer 1560 1.1.2.2 bouyer return (1); 1561 1.1.2.2 bouyer } 1562 1.1.2.2 bouyer 1563 1.1.2.2 bouyer /* ARGSUSED */ 1564 1.1.2.2 bouyer static int 1565 1.1.2.2 bouyer asc_resume_in(asc, status, ss, ir) 1566 1.1.2.2 bouyer register asc_softc_t asc; 1567 1.1.2.2 bouyer register int status, ss, ir; 1568 1.1.2.2 bouyer { 1569 1.1.2.2 bouyer register asc_regmap_t *regs = asc->regs; 1570 1.1.2.2 bouyer register State *state = &asc->st[asc->target]; 1571 1.1.2.2 bouyer register int len; 1572 1.1.2.2 bouyer 1573 1.1.2.2 bouyer /* setup to start reading the next chunk */ 1574 1.1.2.2 bouyer len = state->buflen; 1575 1.1.2.2 bouyer #ifdef DEBUG 1576 1.1.2.2 bouyer if (asc_logp == asc_log) 1577 1.1.2.2 bouyer asc_log[NLOG - 1].resid = len; 1578 1.1.2.2 bouyer else 1579 1.1.2.2 bouyer asc_logp[-1].resid = len; 1580 1.1.2.2 bouyer #endif 1581 1.1.2.2 bouyer if (len > state->dmaBufSize) 1582 1.1.2.2 bouyer len = state->dmaBufSize; 1583 1.1.2.2 bouyer state->dmalen = len; 1584 1.1.2.2 bouyer #ifdef DEBUG 1585 1.1.2.2 bouyer if (asc_logp == asc_log) 1586 1.1.2.2 bouyer asc_log[NLOG - 1].resid = len; 1587 1.1.2.2 bouyer else 1588 1.1.2.2 bouyer asc_logp[-1].resid = len; 1589 1.1.2.2 bouyer #endif 1590 1.1.2.2 bouyer DMA_START(asc->dma, (caddr_t)state->buf, len, DMA_FROM_DEV); 1591 1.1.2.2 bouyer ASC_TC_PUT(regs, len, asc->is24bit); 1592 1.1.2.2 bouyer #ifdef DEBUG 1593 1.1.2.2 bouyer if (asc_debug > 2) 1594 1.1.2.2 bouyer printf("asc_resume_in: buflen %d, len %d\n", state->buflen, 1595 1.1.2.2 bouyer len); 1596 1.1.2.2 bouyer #endif 1597 1.1.2.2 bouyer 1598 1.1.2.2 bouyer /* check for next chunk */ 1599 1.1.2.2 bouyer state->flags |= DMA_IN_PROGRESS; 1600 1.1.2.2 bouyer if (len != state->buflen) { 1601 1.1.2.2 bouyer regs->asc_cmd = ASC_CMD_XFER_INFO | ASC_CMD_DMA; 1602 1.1.2.2 bouyer readback(regs->asc_cmd); 1603 1.1.2.2 bouyer asc->script = &asc_scripts[SCRIPT_CONTINUE_IN]; 1604 1.1.2.2 bouyer return (0); 1605 1.1.2.2 bouyer } 1606 1.1.2.2 bouyer return (1); 1607 1.1.2.2 bouyer } 1608 1.1.2.2 bouyer 1609 1.1.2.2 bouyer /* ARGSUSED */ 1610 1.1.2.2 bouyer static int 1611 1.1.2.2 bouyer asc_resume_dma_in(asc, status, ss, ir) 1612 1.1.2.2 bouyer register asc_softc_t asc; 1613 1.1.2.2 bouyer register int status, ss, ir; 1614 1.1.2.2 bouyer { 1615 1.1.2.2 bouyer register asc_regmap_t *regs = asc->regs; 1616 1.1.2.2 bouyer register State *state = &asc->st[asc->target]; 1617 1.1.2.2 bouyer register int len, off; 1618 1.1.2.2 bouyer 1619 1.1.2.2 bouyer /* setup to finish reading the current chunk */ 1620 1.1.2.2 bouyer len = state->dmaresid; 1621 1.1.2.2 bouyer off = state->dmalen - len; 1622 1.1.2.2 bouyer if ((off & 1) && state->sync_offset) { 1623 1.1.2.2 bouyer printf("asc_resume_dma_in: odd xfer dmalen %d len %d off %d\n", 1624 1.1.2.2 bouyer state->dmalen, len, off); /* XXX */ 1625 1.1.2.2 bouyer regs->asc_res_fifo = ((u_char *)state->buf)[off]; 1626 1.1.2.2 bouyer /*XXX Need to flush cache ? */ 1627 1.1.2.2 bouyer } 1628 1.1.2.2 bouyer DMA_START(asc->dma, (caddr_t)state->buf + off, len, DMA_FROM_DEV); 1629 1.1.2.2 bouyer ASC_TC_PUT(regs, len, asc->is24bit); 1630 1.1.2.2 bouyer #ifdef DEBUG 1631 1.1.2.2 bouyer if (asc_debug > 2) 1632 1.1.2.2 bouyer printf("asc_resume_dma_in: buflen %d dmalen %d len %d off %d\n", 1633 1.1.2.2 bouyer state->dmalen, state->buflen, len, off); 1634 1.1.2.2 bouyer #endif 1635 1.1.2.2 bouyer 1636 1.1.2.2 bouyer /* check for next chunk */ 1637 1.1.2.2 bouyer state->flags |= DMA_IN_PROGRESS; 1638 1.1.2.2 bouyer if (state->dmalen != state->buflen) { 1639 1.1.2.2 bouyer regs->asc_cmd = ASC_CMD_XFER_INFO | ASC_CMD_DMA; 1640 1.1.2.2 bouyer readback(regs->asc_cmd); 1641 1.1.2.2 bouyer asc->script = &asc_scripts[SCRIPT_CONTINUE_IN]; 1642 1.1.2.2 bouyer return (0); 1643 1.1.2.2 bouyer } 1644 1.1.2.2 bouyer return (1); 1645 1.1.2.2 bouyer } 1646 1.1.2.2 bouyer 1647 1.1.2.2 bouyer /* ARGSUSED */ 1648 1.1.2.2 bouyer static int 1649 1.1.2.2 bouyer asc_dma_out(asc, status, ss, ir) 1650 1.1.2.2 bouyer register asc_softc_t asc; 1651 1.1.2.2 bouyer register int status, ss, ir; 1652 1.1.2.2 bouyer { 1653 1.1.2.2 bouyer register asc_regmap_t *regs = asc->regs; 1654 1.1.2.2 bouyer register State *state = &asc->st[asc->target]; 1655 1.1.2.2 bouyer register int len, fifo; 1656 1.1.2.2 bouyer 1657 1.1.2.2 bouyer if (state->flags & DMA_IN_PROGRESS) { 1658 1.1.2.2 bouyer /* check to be sure previous chunk was finished */ 1659 1.1.2.2 bouyer ASC_TC_GET(regs, len); 1660 1.1.2.2 bouyer fifo = regs->asc_flags & ASC_FLAGS_FIFO_CNT; 1661 1.1.2.2 bouyer if (len || fifo) 1662 1.1.2.2 bouyer printf("asc_dma_out: buflen %d dmalen %d tc %d fifo %d\n", 1663 1.1.2.2 bouyer state->buflen, state->dmalen, len, fifo); /* XXX */ 1664 1.1.2.2 bouyer len += fifo; 1665 1.1.2.2 bouyer len = state->dmalen - len; 1666 1.1.2.2 bouyer state->buf += len; 1667 1.1.2.2 bouyer state->buflen -= len; 1668 1.1.2.2 bouyer } 1669 1.1.2.2 bouyer 1670 1.1.2.2 bouyer /* setup for this chunk */ 1671 1.1.2.2 bouyer len = state->buflen; 1672 1.1.2.2 bouyer #ifdef DEBUG 1673 1.1.2.2 bouyer if (asc_logp == asc_log) 1674 1.1.2.2 bouyer asc_log[NLOG - 1].resid = len; 1675 1.1.2.2 bouyer else 1676 1.1.2.2 bouyer asc_logp[-1].resid = len; 1677 1.1.2.2 bouyer #endif 1678 1.1.2.2 bouyer if (len > state->dmaBufSize) 1679 1.1.2.2 bouyer len = state->dmaBufSize; 1680 1.1.2.2 bouyer state->dmalen = len; 1681 1.1.2.2 bouyer DMA_START(asc->dma, (caddr_t)state->buf, len, DMA_TO_DEV); 1682 1.1.2.2 bouyer ASC_TC_PUT(regs, len, asc->is24bit); 1683 1.1.2.2 bouyer #ifdef DEBUG 1684 1.1.2.2 bouyer if (asc_debug > 2) 1685 1.1.2.2 bouyer printf("asc_dma_out: buflen %d, len %d\n", state->buflen, len); 1686 1.1.2.2 bouyer #endif 1687 1.1.2.2 bouyer 1688 1.1.2.2 bouyer /* check for next chunk */ 1689 1.1.2.2 bouyer state->flags |= DMA_IN_PROGRESS; 1690 1.1.2.2 bouyer if (len != state->buflen) { 1691 1.1.2.2 bouyer regs->asc_cmd = ASC_CMD_XFER_INFO | ASC_CMD_DMA; 1692 1.1.2.2 bouyer readback(regs->asc_cmd); 1693 1.1.2.2 bouyer asc->script = &asc_scripts[SCRIPT_CONTINUE_OUT]; 1694 1.1.2.2 bouyer return (0); 1695 1.1.2.2 bouyer } 1696 1.1.2.2 bouyer return (1); 1697 1.1.2.2 bouyer } 1698 1.1.2.2 bouyer 1699 1.1.2.2 bouyer /* ARGSUSED */ 1700 1.1.2.2 bouyer static int 1701 1.1.2.2 bouyer asc_last_dma_out(asc, status, ss, ir) 1702 1.1.2.2 bouyer register asc_softc_t asc; 1703 1.1.2.2 bouyer register int status, ss, ir; 1704 1.1.2.2 bouyer { 1705 1.1.2.2 bouyer register asc_regmap_t *regs = asc->regs; 1706 1.1.2.2 bouyer register State *state = &asc->st[asc->target]; 1707 1.1.2.2 bouyer register int len, fifo; 1708 1.1.2.2 bouyer 1709 1.1.2.2 bouyer ASC_TC_GET(regs, len); 1710 1.1.2.2 bouyer fifo = regs->asc_flags & ASC_FLAGS_FIFO_CNT; 1711 1.1.2.2 bouyer #ifdef DEBUG 1712 1.1.2.2 bouyer if (asc_debug > 2) 1713 1.1.2.2 bouyer printf("asc_last_dma_out: buflen %d dmalen %d tc %d fifo %d\n", 1714 1.1.2.2 bouyer state->buflen, state->dmalen, len, fifo); 1715 1.1.2.2 bouyer #endif 1716 1.1.2.2 bouyer if (fifo) { 1717 1.1.2.2 bouyer len += fifo; 1718 1.1.2.2 bouyer regs->asc_cmd = ASC_CMD_FLUSH; 1719 1.1.2.2 bouyer readback(regs->asc_cmd); 1720 1.1.2.2 bouyer } 1721 1.1.2.2 bouyer state->flags &= ~DMA_IN_PROGRESS; 1722 1.1.2.2 bouyer len = state->dmalen - len; 1723 1.1.2.2 bouyer state->buflen -= len; 1724 1.1.2.2 bouyer return (1); 1725 1.1.2.2 bouyer } 1726 1.1.2.2 bouyer 1727 1.1.2.2 bouyer /* ARGSUSED */ 1728 1.1.2.2 bouyer static int 1729 1.1.2.2 bouyer asc_resume_out(asc, status, ss, ir) 1730 1.1.2.2 bouyer register asc_softc_t asc; 1731 1.1.2.2 bouyer register int status, ss, ir; 1732 1.1.2.2 bouyer { 1733 1.1.2.2 bouyer register asc_regmap_t *regs = asc->regs; 1734 1.1.2.2 bouyer register State *state = &asc->st[asc->target]; 1735 1.1.2.2 bouyer register int len; 1736 1.1.2.2 bouyer 1737 1.1.2.2 bouyer /* setup for this chunk */ 1738 1.1.2.2 bouyer len = state->buflen; 1739 1.1.2.2 bouyer #ifdef DEBUG 1740 1.1.2.2 bouyer if (asc_logp == asc_log) 1741 1.1.2.2 bouyer asc_log[NLOG - 1].resid = len; 1742 1.1.2.2 bouyer else 1743 1.1.2.2 bouyer asc_logp[-1].resid = len; 1744 1.1.2.2 bouyer #endif 1745 1.1.2.2 bouyer if (len > state->dmaBufSize) 1746 1.1.2.2 bouyer len = state->dmaBufSize; 1747 1.1.2.2 bouyer state->dmalen = len; 1748 1.1.2.2 bouyer #ifdef DEBUG 1749 1.1.2.2 bouyer if (asc_logp == asc_log) 1750 1.1.2.2 bouyer asc_log[NLOG - 1].resid = len; 1751 1.1.2.2 bouyer else 1752 1.1.2.2 bouyer asc_logp[-1].resid = len; 1753 1.1.2.2 bouyer #endif 1754 1.1.2.2 bouyer DMA_START(asc->dma, (caddr_t)state->buf, len, DMA_TO_DEV); 1755 1.1.2.2 bouyer ASC_TC_PUT(regs, len, asc->is24bit); 1756 1.1.2.2 bouyer #ifdef DEBUG 1757 1.1.2.2 bouyer if (asc_debug > 2) 1758 1.1.2.2 bouyer printf("asc_resume_out: buflen %d, len %d\n", state->buflen, 1759 1.1.2.2 bouyer len); 1760 1.1.2.2 bouyer #endif 1761 1.1.2.2 bouyer 1762 1.1.2.2 bouyer /* check for next chunk */ 1763 1.1.2.2 bouyer state->flags |= DMA_IN_PROGRESS; 1764 1.1.2.2 bouyer if (len != state->buflen) { 1765 1.1.2.2 bouyer regs->asc_cmd = ASC_CMD_XFER_INFO | ASC_CMD_DMA; 1766 1.1.2.2 bouyer readback(regs->asc_cmd); 1767 1.1.2.2 bouyer asc->script = &asc_scripts[SCRIPT_CONTINUE_OUT]; 1768 1.1.2.2 bouyer return (0); 1769 1.1.2.2 bouyer } 1770 1.1.2.2 bouyer return (1); 1771 1.1.2.2 bouyer } 1772 1.1.2.2 bouyer 1773 1.1.2.2 bouyer /* ARGSUSED */ 1774 1.1.2.2 bouyer static int 1775 1.1.2.2 bouyer asc_resume_dma_out(asc, status, ss, ir) 1776 1.1.2.2 bouyer register asc_softc_t asc; 1777 1.1.2.2 bouyer register int status, ss, ir; 1778 1.1.2.2 bouyer { 1779 1.1.2.2 bouyer register asc_regmap_t *regs = asc->regs; 1780 1.1.2.2 bouyer register State *state = &asc->st[asc->target]; 1781 1.1.2.2 bouyer register int len, off; 1782 1.1.2.2 bouyer 1783 1.1.2.2 bouyer /* setup to finish writing this chunk */ 1784 1.1.2.2 bouyer len = state->dmaresid; 1785 1.1.2.2 bouyer off = state->dmalen - len; 1786 1.1.2.2 bouyer if (off & 1) { 1787 1.1.2.2 bouyer printf("asc_resume_dma_out: odd xfer dmalen %d len %d off %d\n", 1788 1.1.2.2 bouyer state->dmalen, len, off); /* XXX */ 1789 1.1.2.2 bouyer regs->asc_fifo = ((u_char *)state->buf)[off]; 1790 1.1.2.2 bouyer /*XXX Need to flush Cache ? */ 1791 1.1.2.2 bouyer off++; 1792 1.1.2.2 bouyer len--; 1793 1.1.2.2 bouyer } 1794 1.1.2.2 bouyer DMA_START(asc->dma, (caddr_t)state->buf + off, len, DMA_TO_DEV); 1795 1.1.2.2 bouyer ASC_TC_PUT(regs, len, asc->is24bit); 1796 1.1.2.2 bouyer #ifdef DEBUG 1797 1.1.2.2 bouyer if (asc_debug > 2) 1798 1.1.2.2 bouyer printf("asc_resume_dma_out: buflen %d dmalen %d len %d off %d\n", 1799 1.1.2.2 bouyer state->dmalen, state->buflen, len, off); 1800 1.1.2.2 bouyer #endif 1801 1.1.2.2 bouyer 1802 1.1.2.2 bouyer /* check for next chunk */ 1803 1.1.2.2 bouyer state->flags |= DMA_IN_PROGRESS; 1804 1.1.2.2 bouyer if (state->dmalen != state->buflen) { 1805 1.1.2.2 bouyer regs->asc_cmd = ASC_CMD_XFER_INFO | ASC_CMD_DMA; 1806 1.1.2.2 bouyer readback(regs->asc_cmd); 1807 1.1.2.2 bouyer asc->script = &asc_scripts[SCRIPT_CONTINUE_OUT]; 1808 1.1.2.2 bouyer return (0); 1809 1.1.2.2 bouyer } 1810 1.1.2.2 bouyer return (1); 1811 1.1.2.2 bouyer } 1812 1.1.2.2 bouyer 1813 1.1.2.2 bouyer /* ARGSUSED */ 1814 1.1.2.2 bouyer static int 1815 1.1.2.2 bouyer asc_sendsync(asc, status, ss, ir) 1816 1.1.2.2 bouyer register asc_softc_t asc; 1817 1.1.2.2 bouyer register int status, ss, ir; 1818 1.1.2.2 bouyer { 1819 1.1.2.2 bouyer register asc_regmap_t *regs = asc->regs; 1820 1.1.2.2 bouyer register State *state = &asc->st[asc->target]; 1821 1.1.2.2 bouyer 1822 1.1.2.2 bouyer /* send the extended synchronous negotiation message */ 1823 1.1.2.2 bouyer regs->asc_fifo = SCSI_EXTENDED_MSG; 1824 1.1.2.2 bouyer wbflush(); 1825 1.1.2.2 bouyer regs->asc_fifo = 3; 1826 1.1.2.2 bouyer wbflush(); 1827 1.1.2.2 bouyer regs->asc_fifo = SCSI_SYNCHRONOUS_XFER; 1828 1.1.2.2 bouyer wbflush(); 1829 1.1.2.2 bouyer regs->asc_fifo = SCSI_MIN_PERIOD; 1830 1.1.2.2 bouyer wbflush(); 1831 1.1.2.2 bouyer regs->asc_fifo = ASC_MAX_OFFSET; 1832 1.1.2.2 bouyer /* state to resume after we see the sync reply message */ 1833 1.1.2.2 bouyer state->script = asc->script + 2; 1834 1.1.2.2 bouyer state->msglen = 0; 1835 1.1.2.2 bouyer return (1); 1836 1.1.2.2 bouyer } 1837 1.1.2.2 bouyer 1838 1.1.2.2 bouyer /* ARGSUSED */ 1839 1.1.2.2 bouyer static int 1840 1.1.2.2 bouyer asc_replysync(asc, status, ss, ir) 1841 1.1.2.2 bouyer register asc_softc_t asc; 1842 1.1.2.2 bouyer register int status, ss, ir; 1843 1.1.2.2 bouyer { 1844 1.1.2.2 bouyer register asc_regmap_t *regs = asc->regs; 1845 1.1.2.2 bouyer register State *state = &asc->st[asc->target]; 1846 1.1.2.2 bouyer 1847 1.1.2.2 bouyer #ifdef DEBUG 1848 1.1.2.2 bouyer if (asc_debug > 2) 1849 1.1.2.2 bouyer printf("asc_replysync: %x %x\n", 1850 1.1.2.2 bouyer asc_to_scsi_period[state->sync_period] * asc->tb_ticks, 1851 1.1.2.2 bouyer state->sync_offset); 1852 1.1.2.2 bouyer #endif 1853 1.1.2.2 bouyer /* send synchronous transfer in response to a request */ 1854 1.1.2.2 bouyer regs->asc_fifo = SCSI_EXTENDED_MSG; 1855 1.1.2.2 bouyer wbflush(); 1856 1.1.2.2 bouyer regs->asc_fifo = 3; 1857 1.1.2.2 bouyer wbflush(); 1858 1.1.2.2 bouyer regs->asc_fifo = SCSI_SYNCHRONOUS_XFER; 1859 1.1.2.2 bouyer wbflush(); 1860 1.1.2.2 bouyer regs->asc_fifo = asc_to_scsi_period[state->sync_period] * asc->tb_ticks; 1861 1.1.2.2 bouyer wbflush(); 1862 1.1.2.2 bouyer regs->asc_fifo = state->sync_offset; 1863 1.1.2.2 bouyer regs->asc_cmd = ASC_CMD_XFER_INFO; 1864 1.1.2.2 bouyer readback(regs->asc_cmd); 1865 1.1.2.2 bouyer 1866 1.1.2.2 bouyer /* return to the appropriate script */ 1867 1.1.2.2 bouyer if (!state->script) { 1868 1.1.2.2 bouyer #ifdef DEBUG 1869 1.1.2.2 bouyer asc_DumpLog("asc_replsync"); 1870 1.1.2.2 bouyer #endif 1871 1.1.2.2 bouyer panic("asc_replysync"); 1872 1.1.2.2 bouyer } 1873 1.1.2.2 bouyer asc->script = state->script; 1874 1.1.2.2 bouyer state->script = (script_t *)0; 1875 1.1.2.2 bouyer return (0); 1876 1.1.2.2 bouyer } 1877 1.1.2.2 bouyer 1878 1.1.2.2 bouyer /* ARGSUSED */ 1879 1.1.2.2 bouyer static int 1880 1.1.2.2 bouyer asc_msg_in(asc, status, ss, ir) 1881 1.1.2.2 bouyer register asc_softc_t asc; 1882 1.1.2.2 bouyer register int status, ss, ir; 1883 1.1.2.2 bouyer { 1884 1.1.2.2 bouyer register asc_regmap_t *regs = asc->regs; 1885 1.1.2.2 bouyer register State *state = &asc->st[asc->target]; 1886 1.1.2.2 bouyer register int msg; 1887 1.1.2.2 bouyer int i; 1888 1.1.2.2 bouyer 1889 1.1.2.2 bouyer /* read one message byte */ 1890 1.1.2.2 bouyer msg = regs->asc_fifo; 1891 1.1.2.2 bouyer #ifdef DEBUG 1892 1.1.2.2 bouyer if (asc_logp == asc_log) 1893 1.1.2.2 bouyer asc_log[NLOG - 1].msg = msg; 1894 1.1.2.2 bouyer else 1895 1.1.2.2 bouyer asc_logp[-1].msg = msg; 1896 1.1.2.2 bouyer #endif 1897 1.1.2.2 bouyer 1898 1.1.2.2 bouyer /* check for multi-byte message */ 1899 1.1.2.2 bouyer if (state->msglen != 0) { 1900 1.1.2.2 bouyer /* first byte is the message length */ 1901 1.1.2.2 bouyer if (state->msglen < 0) { 1902 1.1.2.2 bouyer state->msglen = msg; 1903 1.1.2.2 bouyer return (1); 1904 1.1.2.2 bouyer } 1905 1.1.2.2 bouyer if (state->msgcnt >= state->msglen) 1906 1.1.2.2 bouyer goto abort; 1907 1.1.2.2 bouyer state->msg_in[state->msgcnt++] = msg; 1908 1.1.2.2 bouyer 1909 1.1.2.2 bouyer /* did we just read the last byte of the message? */ 1910 1.1.2.2 bouyer if (state->msgcnt != state->msglen) 1911 1.1.2.2 bouyer return (1); 1912 1.1.2.2 bouyer 1913 1.1.2.2 bouyer /* process an extended message */ 1914 1.1.2.2 bouyer #ifdef DEBUG 1915 1.1.2.2 bouyer if (asc_debug > 2) 1916 1.1.2.2 bouyer printf("asc_msg_in: msg %x %x %x\n", 1917 1.1.2.2 bouyer state->msg_in[0], 1918 1.1.2.2 bouyer state->msg_in[1], 1919 1.1.2.2 bouyer state->msg_in[2]); 1920 1.1.2.2 bouyer #endif 1921 1.1.2.2 bouyer switch (state->msg_in[0]) { 1922 1.1.2.2 bouyer case SCSI_SYNCHRONOUS_XFER: 1923 1.1.2.2 bouyer state->flags |= DID_SYNC; 1924 1.1.2.2 bouyer state->sync_offset = state->msg_in[2]; 1925 1.1.2.2 bouyer 1926 1.1.2.2 bouyer /* convert SCSI period to ASC period */ 1927 1.1.2.2 bouyer i = state->msg_in[1] / asc->tb_ticks; 1928 1.1.2.2 bouyer if (i < asc->min_period) 1929 1.1.2.2 bouyer i = asc->min_period; 1930 1.1.2.2 bouyer else if (i >= asc->max_period) { 1931 1.1.2.2 bouyer /* can't do sync transfer, period too long */ 1932 1.1.2.2 bouyer printf("%s: SCSI device %d: sync xfer period too long (%d)\n", 1933 1.1.2.2 bouyer asc->sc_dev.dv_xname, asc->target, i); 1934 1.1.2.2 bouyer i = asc->max_period; 1935 1.1.2.2 bouyer state->sync_offset = 0; 1936 1.1.2.2 bouyer } 1937 1.1.2.2 bouyer if ((i * asc->tb_ticks) != state->msg_in[1]) 1938 1.1.2.2 bouyer i++; 1939 1.1.2.2 bouyer state->sync_period = i & 0x1F; 1940 1.1.2.2 bouyer 1941 1.1.2.2 bouyer /* 1942 1.1.2.2 bouyer * If this is a request, check minimums and 1943 1.1.2.2 bouyer * send back an acknowledge. 1944 1.1.2.2 bouyer */ 1945 1.1.2.2 bouyer if (!(state->flags & TRY_SYNC)) { 1946 1.1.2.2 bouyer regs->asc_cmd = ASC_CMD_SET_ATN; 1947 1.1.2.2 bouyer readback(regs->asc_cmd); 1948 1.1.2.2 bouyer 1949 1.1.2.2 bouyer if (state->sync_period < asc->min_period) 1950 1.1.2.2 bouyer state->sync_period = 1951 1.1.2.2 bouyer asc->min_period; 1952 1.1.2.2 bouyer if (state->sync_offset > ASC_MAX_OFFSET) 1953 1.1.2.2 bouyer state->sync_offset = 1954 1.1.2.2 bouyer ASC_MAX_OFFSET; 1955 1.1.2.2 bouyer asc->script = &asc_scripts[SCRIPT_REPLY_SYNC]; 1956 1.1.2.2 bouyer regs->asc_syn_p = state->sync_period; 1957 1.1.2.2 bouyer readback(regs->asc_syn_p); 1958 1.1.2.2 bouyer regs->asc_syn_o = state->sync_offset; 1959 1.1.2.2 bouyer readback(regs->asc_syn_o); 1960 1.1.2.2 bouyer regs->asc_cmd = ASC_CMD_MSG_ACPT; 1961 1.1.2.2 bouyer readback(regs->asc_cmd); 1962 1.1.2.2 bouyer return (0); 1963 1.1.2.2 bouyer } 1964 1.1.2.2 bouyer 1965 1.1.2.2 bouyer regs->asc_syn_p = state->sync_period; 1966 1.1.2.2 bouyer readback(regs->asc_syn_p); 1967 1.1.2.2 bouyer regs->asc_syn_o = state->sync_offset; 1968 1.1.2.2 bouyer readback(regs->asc_syn_o); 1969 1.1.2.2 bouyer goto done; 1970 1.1.2.2 bouyer 1971 1.1.2.2 bouyer default: 1972 1.1.2.2 bouyer printf("%s: SCSI device %d: rejecting extended message 0x%x\n", 1973 1.1.2.2 bouyer asc->sc_dev.dv_xname, asc->target, 1974 1.1.2.2 bouyer state->msg_in[0]); 1975 1.1.2.2 bouyer goto reject; 1976 1.1.2.2 bouyer } 1977 1.1.2.2 bouyer } 1978 1.1.2.2 bouyer 1979 1.1.2.2 bouyer /* process first byte of a message */ 1980 1.1.2.2 bouyer #ifdef DEBUG 1981 1.1.2.2 bouyer if (asc_debug > 2) 1982 1.1.2.2 bouyer printf("asc_msg_in: msg %x\n", msg); 1983 1.1.2.2 bouyer #endif 1984 1.1.2.2 bouyer switch (msg) { 1985 1.1.2.2 bouyer #if 0 1986 1.1.2.2 bouyer case SCSI_MESSAGE_REJECT: 1987 1.1.2.2 bouyer printf(" did not like SYNCH xfer "); /* XXX */ 1988 1.1.2.2 bouyer state->flags |= DID_SYNC; 1989 1.1.2.2 bouyer regs->asc_cmd = ASC_CMD_MSG_ACPT; 1990 1.1.2.2 bouyer readback(regs->asc_cmd); 1991 1.1.2.2 bouyer status = asc_wait(regs, ASC_CSR_INT); 1992 1.1.2.2 bouyer ir = regs->asc_intr; 1993 1.1.2.2 bouyer /* some just break out here, some dont */ 1994 1.1.2.2 bouyer if (ASC_PHASE(status) == ASC_PHASE_MSG_OUT) { 1995 1.1.2.2 bouyer regs->asc_fifo = SCSI_ABORT; 1996 1.1.2.2 bouyer regs->asc_cmd = ASC_CMD_XFER_INFO; 1997 1.1.2.2 bouyer readback(regs->asc_cmd); 1998 1.1.2.2 bouyer status = asc_wait(regs, ASC_CSR_INT); 1999 1.1.2.2 bouyer ir = regs->asc_intr; 2000 1.1.2.2 bouyer } 2001 1.1.2.2 bouyer if (ir & ASC_INT_DISC) { 2002 1.1.2.2 bouyer asc_end(asc, status, 0, ir); 2003 1.1.2.2 bouyer return (0); 2004 1.1.2.2 bouyer } 2005 1.1.2.2 bouyer goto status; 2006 1.1.2.2 bouyer #endif /* 0 */ 2007 1.1.2.2 bouyer 2008 1.1.2.2 bouyer case SCSI_EXTENDED_MSG: /* read an extended message */ 2009 1.1.2.2 bouyer /* setup to read message length next */ 2010 1.1.2.2 bouyer state->msglen = -1; 2011 1.1.2.2 bouyer state->msgcnt = 0; 2012 1.1.2.2 bouyer return (1); 2013 1.1.2.2 bouyer 2014 1.1.2.2 bouyer case SCSI_NO_OP: 2015 1.1.2.2 bouyer break; 2016 1.1.2.2 bouyer 2017 1.1.2.2 bouyer case SCSI_SAVE_DATA_POINTER: 2018 1.1.2.2 bouyer /* expect another message */ 2019 1.1.2.2 bouyer return (1); 2020 1.1.2.2 bouyer 2021 1.1.2.2 bouyer case SCSI_RESTORE_POINTERS: 2022 1.1.2.2 bouyer /* 2023 1.1.2.2 bouyer * Need to do the following if resuming synchonous data in 2024 1.1.2.2 bouyer * on an odd byte boundary. 2025 1.1.2.2 bouyer regs->asc_cnfg2 |= ASC_CNFG2_RFB; 2026 1.1.2.2 bouyer */ 2027 1.1.2.2 bouyer break; 2028 1.1.2.2 bouyer 2029 1.1.2.2 bouyer case SCSI_DISCONNECT: 2030 1.1.2.2 bouyer if (state->flags & DISCONN) 2031 1.1.2.2 bouyer goto abort; 2032 1.1.2.2 bouyer state->flags |= DISCONN; 2033 1.1.2.2 bouyer regs->asc_cmd = ASC_CMD_MSG_ACPT; 2034 1.1.2.2 bouyer readback(regs->asc_cmd); 2035 1.1.2.2 bouyer asc->script = &asc_scripts[SCRIPT_DISCONNECT]; 2036 1.1.2.2 bouyer return (0); 2037 1.1.2.2 bouyer 2038 1.1.2.2 bouyer default: 2039 1.1.2.2 bouyer printf("%s: SCSI device %d: rejecting message 0x%x\n", 2040 1.1.2.2 bouyer asc->sc_dev.dv_xname, asc->target, msg); 2041 1.1.2.2 bouyer reject: 2042 1.1.2.2 bouyer /* request a message out before acknowledging this message */ 2043 1.1.2.2 bouyer state->msg_out = SCSI_MESSAGE_REJECT; 2044 1.1.2.2 bouyer regs->asc_cmd = ASC_CMD_SET_ATN; 2045 1.1.2.2 bouyer readback(regs->asc_cmd); 2046 1.1.2.2 bouyer } 2047 1.1.2.2 bouyer 2048 1.1.2.2 bouyer done: 2049 1.1.2.2 bouyer /* return to original script */ 2050 1.1.2.2 bouyer regs->asc_cmd = ASC_CMD_MSG_ACPT; 2051 1.1.2.2 bouyer readback(regs->asc_cmd); 2052 1.1.2.2 bouyer if (!state->script) { 2053 1.1.2.2 bouyer abort: 2054 1.1.2.2 bouyer #ifdef DEBUG 2055 1.1.2.2 bouyer asc_DumpLog("asc_msg_in"); 2056 1.1.2.2 bouyer #endif 2057 1.1.2.2 bouyer panic("asc_msg_in"); 2058 1.1.2.2 bouyer } 2059 1.1.2.2 bouyer asc->script = state->script; 2060 1.1.2.2 bouyer state->script = (script_t *)0; 2061 1.1.2.2 bouyer return (0); 2062 1.1.2.2 bouyer } 2063 1.1.2.2 bouyer 2064 1.1.2.2 bouyer /* ARGSUSED */ 2065 1.1.2.2 bouyer static int 2066 1.1.2.2 bouyer asc_disconnect(asc, status, ss, ir) 2067 1.1.2.2 bouyer asc_softc_t asc; 2068 1.1.2.2 bouyer int status, ss, ir; 2069 1.1.2.2 bouyer { 2070 1.1.2.2 bouyer State *state = &asc->st[asc->target]; 2071 1.1.2.2 bouyer 2072 1.1.2.2 bouyer #ifdef DIAGNOSTIC 2073 1.1.2.2 bouyer if (!(state->flags & DISCONN)) { 2074 1.1.2.2 bouyer printf("asc_disconnect: device %d: DISCONN not set!\n", 2075 1.1.2.2 bouyer asc->target); 2076 1.1.2.2 bouyer } 2077 1.1.2.2 bouyer #endif /* DIAGNOSTIC */ 2078 1.1.2.2 bouyer asc->target = -1; 2079 1.1.2.2 bouyer asc->state = ASC_STATE_RESEL; 2080 1.1.2.2 bouyer return (1); 2081 1.1.2.2 bouyer } 2082 1.1.2.2 bouyer 2083 1.1.2.2 bouyer #ifdef DEBUG 2084 1.1.2.2 bouyer /* 2085 1.1.2.2 bouyer * Dump the log buffer. 2086 1.1.2.2 bouyer */ 2087 1.1.2.2 bouyer static void 2088 1.1.2.2 bouyer asc_DumpLog(str) 2089 1.1.2.2 bouyer char *str; 2090 1.1.2.2 bouyer { 2091 1.1.2.2 bouyer register struct asc_log *lp; 2092 1.1.2.2 bouyer register u_int status; 2093 1.1.2.2 bouyer 2094 1.1.2.2 bouyer printf("asc: %s: cmd %x bn %d cnt %d\n", str, asc_debug_cmd, 2095 1.1.2.2 bouyer asc_debug_bn, asc_debug_sz); 2096 1.1.2.2 bouyer lp = asc_logp; 2097 1.1.2.2 bouyer do { 2098 1.1.2.2 bouyer status = lp->status; 2099 1.1.2.2 bouyer printf("asc%d tgt %d status %x ss %x ir %x cond %d:%x msg %x resid %d\n", 2100 1.1.2.2 bouyer status >> 24, 2101 1.1.2.2 bouyer lp->target, 2102 1.1.2.2 bouyer (status >> 16) & 0xFF, 2103 1.1.2.2 bouyer (status >> 8) & 0xFF, 2104 1.1.2.2 bouyer status & 0XFF, 2105 1.1.2.2 bouyer lp->state, 2106 1.1.2.2 bouyer asc_scripts[lp->state].condition, 2107 1.1.2.2 bouyer lp->msg, lp->resid); 2108 1.1.2.2 bouyer if (++lp >= &asc_log[NLOG]) 2109 1.1.2.2 bouyer lp = asc_log; 2110 1.1.2.2 bouyer } while (lp != asc_logp); 2111 1.1.2.2 bouyer } 2112 1.1.2.2 bouyer #endif /* DEBUG */ 2113
Indexes created Fri Oct 31 04:09:52 GMT 2025