Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Core routines and tables shareable across OS platforms. |
| 3 | * |
| 4 | * Copyright (c) 1994-2002 Justin T. Gibbs. |
| 5 | * Copyright (c) 2000-2003 Adaptec Inc. |
| 6 | * All rights reserved. |
| 7 | * |
| 8 | * Redistribution and use in source and binary forms, with or without |
| 9 | * modification, are permitted provided that the following conditions |
| 10 | * are met: |
| 11 | * 1. Redistributions of source code must retain the above copyright |
| 12 | * notice, this list of conditions, and the following disclaimer, |
| 13 | * without modification. |
| 14 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
| 15 | * substantially similar to the "NO WARRANTY" disclaimer below |
| 16 | * ("Disclaimer") and any redistribution must be conditioned upon |
| 17 | * including a substantially similar Disclaimer requirement for further |
| 18 | * binary redistribution. |
| 19 | * 3. Neither the names of the above-listed copyright holders nor the names |
| 20 | * of any contributors may be used to endorse or promote products derived |
| 21 | * from this software without specific prior written permission. |
| 22 | * |
| 23 | * Alternatively, this software may be distributed under the terms of the |
| 24 | * GNU General Public License ("GPL") version 2 as published by the Free |
| 25 | * Software Foundation. |
| 26 | * |
| 27 | * NO WARRANTY |
| 28 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 29 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 30 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
| 31 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 32 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 33 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 34 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 35 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 36 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| 37 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 38 | * POSSIBILITY OF SUCH DAMAGES. |
| 39 | * |
Hannes Reinecke | 53467e6 | 2006-01-24 10:43:26 +0100 | [diff] [blame] | 40 | * $Id: //depot/aic7xxx/aic7xxx/aic79xx.c#250 $ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | */ |
| 42 | |
| 43 | #ifdef __linux__ |
| 44 | #include "aic79xx_osm.h" |
| 45 | #include "aic79xx_inline.h" |
| 46 | #include "aicasm/aicasm_insformat.h" |
| 47 | #else |
| 48 | #include <dev/aic7xxx/aic79xx_osm.h> |
| 49 | #include <dev/aic7xxx/aic79xx_inline.h> |
| 50 | #include <dev/aic7xxx/aicasm/aicasm_insformat.h> |
| 51 | #endif |
| 52 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | |
| 54 | /***************************** Lookup Tables **********************************/ |
| 55 | char *ahd_chip_names[] = |
| 56 | { |
| 57 | "NONE", |
| 58 | "aic7901", |
| 59 | "aic7902", |
| 60 | "aic7901A" |
| 61 | }; |
| 62 | static const u_int num_chip_names = NUM_ELEMENTS(ahd_chip_names); |
| 63 | |
| 64 | /* |
| 65 | * Hardware error codes. |
| 66 | */ |
| 67 | struct ahd_hard_error_entry { |
| 68 | uint8_t errno; |
| 69 | char *errmesg; |
| 70 | }; |
| 71 | |
| 72 | static struct ahd_hard_error_entry ahd_hard_errors[] = { |
| 73 | { DSCTMOUT, "Discard Timer has timed out" }, |
| 74 | { ILLOPCODE, "Illegal Opcode in sequencer program" }, |
| 75 | { SQPARERR, "Sequencer Parity Error" }, |
| 76 | { DPARERR, "Data-path Parity Error" }, |
| 77 | { MPARERR, "Scratch or SCB Memory Parity Error" }, |
| 78 | { CIOPARERR, "CIOBUS Parity Error" }, |
| 79 | }; |
| 80 | static const u_int num_errors = NUM_ELEMENTS(ahd_hard_errors); |
| 81 | |
| 82 | static struct ahd_phase_table_entry ahd_phase_table[] = |
| 83 | { |
| 84 | { P_DATAOUT, MSG_NOOP, "in Data-out phase" }, |
| 85 | { P_DATAIN, MSG_INITIATOR_DET_ERR, "in Data-in phase" }, |
| 86 | { P_DATAOUT_DT, MSG_NOOP, "in DT Data-out phase" }, |
| 87 | { P_DATAIN_DT, MSG_INITIATOR_DET_ERR, "in DT Data-in phase" }, |
| 88 | { P_COMMAND, MSG_NOOP, "in Command phase" }, |
| 89 | { P_MESGOUT, MSG_NOOP, "in Message-out phase" }, |
| 90 | { P_STATUS, MSG_INITIATOR_DET_ERR, "in Status phase" }, |
| 91 | { P_MESGIN, MSG_PARITY_ERROR, "in Message-in phase" }, |
| 92 | { P_BUSFREE, MSG_NOOP, "while idle" }, |
| 93 | { 0, MSG_NOOP, "in unknown phase" } |
| 94 | }; |
| 95 | |
| 96 | /* |
| 97 | * In most cases we only wish to itterate over real phases, so |
| 98 | * exclude the last element from the count. |
| 99 | */ |
| 100 | static const u_int num_phases = NUM_ELEMENTS(ahd_phase_table) - 1; |
| 101 | |
| 102 | /* Our Sequencer Program */ |
| 103 | #include "aic79xx_seq.h" |
| 104 | |
| 105 | /**************************** Function Declarations ***************************/ |
| 106 | static void ahd_handle_transmission_error(struct ahd_softc *ahd); |
| 107 | static void ahd_handle_lqiphase_error(struct ahd_softc *ahd, |
| 108 | u_int lqistat1); |
| 109 | static int ahd_handle_pkt_busfree(struct ahd_softc *ahd, |
| 110 | u_int busfreetime); |
| 111 | static int ahd_handle_nonpkt_busfree(struct ahd_softc *ahd); |
| 112 | static void ahd_handle_proto_violation(struct ahd_softc *ahd); |
| 113 | static void ahd_force_renegotiation(struct ahd_softc *ahd, |
| 114 | struct ahd_devinfo *devinfo); |
| 115 | |
| 116 | static struct ahd_tmode_tstate* |
| 117 | ahd_alloc_tstate(struct ahd_softc *ahd, |
| 118 | u_int scsi_id, char channel); |
| 119 | #ifdef AHD_TARGET_MODE |
| 120 | static void ahd_free_tstate(struct ahd_softc *ahd, |
| 121 | u_int scsi_id, char channel, int force); |
| 122 | #endif |
| 123 | static void ahd_devlimited_syncrate(struct ahd_softc *ahd, |
| 124 | struct ahd_initiator_tinfo *, |
| 125 | u_int *period, |
| 126 | u_int *ppr_options, |
| 127 | role_t role); |
| 128 | static void ahd_update_neg_table(struct ahd_softc *ahd, |
| 129 | struct ahd_devinfo *devinfo, |
| 130 | struct ahd_transinfo *tinfo); |
| 131 | static void ahd_update_pending_scbs(struct ahd_softc *ahd); |
| 132 | static void ahd_fetch_devinfo(struct ahd_softc *ahd, |
| 133 | struct ahd_devinfo *devinfo); |
| 134 | static void ahd_scb_devinfo(struct ahd_softc *ahd, |
| 135 | struct ahd_devinfo *devinfo, |
| 136 | struct scb *scb); |
| 137 | static void ahd_setup_initiator_msgout(struct ahd_softc *ahd, |
| 138 | struct ahd_devinfo *devinfo, |
| 139 | struct scb *scb); |
| 140 | static void ahd_build_transfer_msg(struct ahd_softc *ahd, |
| 141 | struct ahd_devinfo *devinfo); |
| 142 | static void ahd_construct_sdtr(struct ahd_softc *ahd, |
| 143 | struct ahd_devinfo *devinfo, |
| 144 | u_int period, u_int offset); |
| 145 | static void ahd_construct_wdtr(struct ahd_softc *ahd, |
| 146 | struct ahd_devinfo *devinfo, |
| 147 | u_int bus_width); |
| 148 | static void ahd_construct_ppr(struct ahd_softc *ahd, |
| 149 | struct ahd_devinfo *devinfo, |
| 150 | u_int period, u_int offset, |
| 151 | u_int bus_width, u_int ppr_options); |
| 152 | static void ahd_clear_msg_state(struct ahd_softc *ahd); |
| 153 | static void ahd_handle_message_phase(struct ahd_softc *ahd); |
| 154 | typedef enum { |
| 155 | AHDMSG_1B, |
| 156 | AHDMSG_2B, |
| 157 | AHDMSG_EXT |
| 158 | } ahd_msgtype; |
| 159 | static int ahd_sent_msg(struct ahd_softc *ahd, ahd_msgtype type, |
| 160 | u_int msgval, int full); |
| 161 | static int ahd_parse_msg(struct ahd_softc *ahd, |
| 162 | struct ahd_devinfo *devinfo); |
| 163 | static int ahd_handle_msg_reject(struct ahd_softc *ahd, |
| 164 | struct ahd_devinfo *devinfo); |
| 165 | static void ahd_handle_ign_wide_residue(struct ahd_softc *ahd, |
| 166 | struct ahd_devinfo *devinfo); |
| 167 | static void ahd_reinitialize_dataptrs(struct ahd_softc *ahd); |
| 168 | static void ahd_handle_devreset(struct ahd_softc *ahd, |
| 169 | struct ahd_devinfo *devinfo, |
| 170 | u_int lun, cam_status status, |
| 171 | char *message, int verbose_level); |
| 172 | #ifdef AHD_TARGET_MODE |
| 173 | static void ahd_setup_target_msgin(struct ahd_softc *ahd, |
| 174 | struct ahd_devinfo *devinfo, |
| 175 | struct scb *scb); |
| 176 | #endif |
| 177 | |
| 178 | static u_int ahd_sglist_size(struct ahd_softc *ahd); |
| 179 | static u_int ahd_sglist_allocsize(struct ahd_softc *ahd); |
| 180 | static bus_dmamap_callback_t |
| 181 | ahd_dmamap_cb; |
| 182 | static void ahd_initialize_hscbs(struct ahd_softc *ahd); |
| 183 | static int ahd_init_scbdata(struct ahd_softc *ahd); |
| 184 | static void ahd_fini_scbdata(struct ahd_softc *ahd); |
| 185 | static void ahd_setup_iocell_workaround(struct ahd_softc *ahd); |
| 186 | static void ahd_iocell_first_selection(struct ahd_softc *ahd); |
| 187 | static void ahd_add_col_list(struct ahd_softc *ahd, |
| 188 | struct scb *scb, u_int col_idx); |
| 189 | static void ahd_rem_col_list(struct ahd_softc *ahd, |
| 190 | struct scb *scb); |
| 191 | static void ahd_chip_init(struct ahd_softc *ahd); |
| 192 | static void ahd_qinfifo_requeue(struct ahd_softc *ahd, |
| 193 | struct scb *prev_scb, |
| 194 | struct scb *scb); |
| 195 | static int ahd_qinfifo_count(struct ahd_softc *ahd); |
| 196 | static int ahd_search_scb_list(struct ahd_softc *ahd, int target, |
| 197 | char channel, int lun, u_int tag, |
| 198 | role_t role, uint32_t status, |
| 199 | ahd_search_action action, |
Hannes Reinecke | 53467e6 | 2006-01-24 10:43:26 +0100 | [diff] [blame] | 200 | u_int *list_head, u_int *list_tail, |
| 201 | u_int tid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | static void ahd_stitch_tid_list(struct ahd_softc *ahd, |
| 203 | u_int tid_prev, u_int tid_cur, |
| 204 | u_int tid_next); |
| 205 | static void ahd_add_scb_to_free_list(struct ahd_softc *ahd, |
| 206 | u_int scbid); |
| 207 | static u_int ahd_rem_wscb(struct ahd_softc *ahd, u_int scbid, |
| 208 | u_int prev, u_int next, u_int tid); |
| 209 | static void ahd_reset_current_bus(struct ahd_softc *ahd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | static ahd_callback_t ahd_stat_timer; |
| 211 | #ifdef AHD_DUMP_SEQ |
| 212 | static void ahd_dumpseq(struct ahd_softc *ahd); |
| 213 | #endif |
| 214 | static void ahd_loadseq(struct ahd_softc *ahd); |
| 215 | static int ahd_check_patch(struct ahd_softc *ahd, |
| 216 | struct patch **start_patch, |
| 217 | u_int start_instr, u_int *skip_addr); |
| 218 | static u_int ahd_resolve_seqaddr(struct ahd_softc *ahd, |
| 219 | u_int address); |
| 220 | static void ahd_download_instr(struct ahd_softc *ahd, |
| 221 | u_int instrptr, uint8_t *dconsts); |
| 222 | static int ahd_probe_stack_size(struct ahd_softc *ahd); |
| 223 | static int ahd_scb_active_in_fifo(struct ahd_softc *ahd, |
| 224 | struct scb *scb); |
| 225 | static void ahd_run_data_fifo(struct ahd_softc *ahd, |
| 226 | struct scb *scb); |
| 227 | |
| 228 | #ifdef AHD_TARGET_MODE |
| 229 | static void ahd_queue_lstate_event(struct ahd_softc *ahd, |
| 230 | struct ahd_tmode_lstate *lstate, |
| 231 | u_int initiator_id, |
| 232 | u_int event_type, |
| 233 | u_int event_arg); |
| 234 | static void ahd_update_scsiid(struct ahd_softc *ahd, |
| 235 | u_int targid_mask); |
| 236 | static int ahd_handle_target_cmd(struct ahd_softc *ahd, |
| 237 | struct target_cmd *cmd); |
| 238 | #endif |
| 239 | |
| 240 | /******************************** Private Inlines *****************************/ |
| 241 | static __inline void ahd_assert_atn(struct ahd_softc *ahd); |
| 242 | static __inline int ahd_currently_packetized(struct ahd_softc *ahd); |
| 243 | static __inline int ahd_set_active_fifo(struct ahd_softc *ahd); |
| 244 | |
| 245 | static __inline void |
| 246 | ahd_assert_atn(struct ahd_softc *ahd) |
| 247 | { |
| 248 | ahd_outb(ahd, SCSISIGO, ATNO); |
| 249 | } |
| 250 | |
| 251 | /* |
| 252 | * Determine if the current connection has a packetized |
| 253 | * agreement. This does not necessarily mean that we |
| 254 | * are currently in a packetized transfer. We could |
| 255 | * just as easily be sending or receiving a message. |
| 256 | */ |
| 257 | static __inline int |
| 258 | ahd_currently_packetized(struct ahd_softc *ahd) |
| 259 | { |
| 260 | ahd_mode_state saved_modes; |
| 261 | int packetized; |
| 262 | |
| 263 | saved_modes = ahd_save_modes(ahd); |
| 264 | if ((ahd->bugs & AHD_PKTIZED_STATUS_BUG) != 0) { |
| 265 | /* |
| 266 | * The packetized bit refers to the last |
| 267 | * connection, not the current one. Check |
| 268 | * for non-zero LQISTATE instead. |
| 269 | */ |
| 270 | ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG); |
| 271 | packetized = ahd_inb(ahd, LQISTATE) != 0; |
| 272 | } else { |
| 273 | ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); |
| 274 | packetized = ahd_inb(ahd, LQISTAT2) & PACKETIZED; |
| 275 | } |
| 276 | ahd_restore_modes(ahd, saved_modes); |
| 277 | return (packetized); |
| 278 | } |
| 279 | |
| 280 | static __inline int |
| 281 | ahd_set_active_fifo(struct ahd_softc *ahd) |
| 282 | { |
| 283 | u_int active_fifo; |
| 284 | |
| 285 | AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); |
| 286 | active_fifo = ahd_inb(ahd, DFFSTAT) & CURRFIFO; |
| 287 | switch (active_fifo) { |
| 288 | case 0: |
| 289 | case 1: |
| 290 | ahd_set_modes(ahd, active_fifo, active_fifo); |
| 291 | return (1); |
| 292 | default: |
| 293 | return (0); |
| 294 | } |
| 295 | } |
| 296 | |
| 297 | /************************* Sequencer Execution Control ************************/ |
| 298 | /* |
| 299 | * Restart the sequencer program from address zero |
| 300 | */ |
| 301 | void |
| 302 | ahd_restart(struct ahd_softc *ahd) |
| 303 | { |
| 304 | |
| 305 | ahd_pause(ahd); |
| 306 | |
| 307 | ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); |
| 308 | |
| 309 | /* No more pending messages */ |
| 310 | ahd_clear_msg_state(ahd); |
| 311 | ahd_outb(ahd, SCSISIGO, 0); /* De-assert BSY */ |
| 312 | ahd_outb(ahd, MSG_OUT, MSG_NOOP); /* No message to send */ |
| 313 | ahd_outb(ahd, SXFRCTL1, ahd_inb(ahd, SXFRCTL1) & ~BITBUCKET); |
| 314 | ahd_outb(ahd, SEQINTCTL, 0); |
| 315 | ahd_outb(ahd, LASTPHASE, P_BUSFREE); |
| 316 | ahd_outb(ahd, SEQ_FLAGS, 0); |
| 317 | ahd_outb(ahd, SAVED_SCSIID, 0xFF); |
| 318 | ahd_outb(ahd, SAVED_LUN, 0xFF); |
| 319 | |
| 320 | /* |
| 321 | * Ensure that the sequencer's idea of TQINPOS |
| 322 | * matches our own. The sequencer increments TQINPOS |
| 323 | * only after it sees a DMA complete and a reset could |
| 324 | * occur before the increment leaving the kernel to believe |
| 325 | * the command arrived but the sequencer to not. |
| 326 | */ |
| 327 | ahd_outb(ahd, TQINPOS, ahd->tqinfifonext); |
| 328 | |
| 329 | /* Always allow reselection */ |
| 330 | ahd_outb(ahd, SCSISEQ1, |
| 331 | ahd_inb(ahd, SCSISEQ_TEMPLATE) & (ENSELI|ENRSELI|ENAUTOATNP)); |
| 332 | ahd_set_modes(ahd, AHD_MODE_CCHAN, AHD_MODE_CCHAN); |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 333 | |
| 334 | /* |
| 335 | * Clear any pending sequencer interrupt. It is no |
| 336 | * longer relevant since we're resetting the Program |
| 337 | * Counter. |
| 338 | */ |
| 339 | ahd_outb(ahd, CLRINT, CLRSEQINT); |
| 340 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | ahd_outb(ahd, SEQCTL0, FASTMODE|SEQRESET); |
| 342 | ahd_unpause(ahd); |
| 343 | } |
| 344 | |
| 345 | void |
| 346 | ahd_clear_fifo(struct ahd_softc *ahd, u_int fifo) |
| 347 | { |
| 348 | ahd_mode_state saved_modes; |
| 349 | |
| 350 | #ifdef AHD_DEBUG |
| 351 | if ((ahd_debug & AHD_SHOW_FIFOS) != 0) |
| 352 | printf("%s: Clearing FIFO %d\n", ahd_name(ahd), fifo); |
| 353 | #endif |
| 354 | saved_modes = ahd_save_modes(ahd); |
| 355 | ahd_set_modes(ahd, fifo, fifo); |
| 356 | ahd_outb(ahd, DFFSXFRCTL, RSTCHN|CLRSHCNT); |
| 357 | if ((ahd_inb(ahd, SG_STATE) & FETCH_INPROG) != 0) |
| 358 | ahd_outb(ahd, CCSGCTL, CCSGRESET); |
| 359 | ahd_outb(ahd, LONGJMP_ADDR + 1, INVALID_ADDR); |
| 360 | ahd_outb(ahd, SG_STATE, 0); |
| 361 | ahd_restore_modes(ahd, saved_modes); |
| 362 | } |
| 363 | |
| 364 | /************************* Input/Output Queues ********************************/ |
| 365 | /* |
| 366 | * Flush and completed commands that are sitting in the command |
| 367 | * complete queues down on the chip but have yet to be dma'ed back up. |
| 368 | */ |
| 369 | void |
| 370 | ahd_flush_qoutfifo(struct ahd_softc *ahd) |
| 371 | { |
| 372 | struct scb *scb; |
| 373 | ahd_mode_state saved_modes; |
| 374 | u_int saved_scbptr; |
| 375 | u_int ccscbctl; |
| 376 | u_int scbid; |
| 377 | u_int next_scbid; |
| 378 | |
| 379 | saved_modes = ahd_save_modes(ahd); |
| 380 | |
| 381 | /* |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 382 | * Flush the good status FIFO for completed packetized commands. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 383 | */ |
| 384 | ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); |
| 385 | saved_scbptr = ahd_get_scbptr(ahd); |
| 386 | while ((ahd_inb(ahd, LQISTAT2) & LQIGSAVAIL) != 0) { |
| 387 | u_int fifo_mode; |
| 388 | u_int i; |
| 389 | |
Hannes Reinecke | ba62cd2 | 2006-01-12 12:07:02 +0100 | [diff] [blame] | 390 | scbid = ahd_inw(ahd, GSFIFO); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | scb = ahd_lookup_scb(ahd, scbid); |
| 392 | if (scb == NULL) { |
| 393 | printf("%s: Warning - GSFIFO SCB %d invalid\n", |
| 394 | ahd_name(ahd), scbid); |
| 395 | continue; |
| 396 | } |
| 397 | /* |
| 398 | * Determine if this transaction is still active in |
| 399 | * any FIFO. If it is, we must flush that FIFO to |
| 400 | * the host before completing the command. |
| 401 | */ |
| 402 | fifo_mode = 0; |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 403 | rescan_fifos: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | for (i = 0; i < 2; i++) { |
| 405 | /* Toggle to the other mode. */ |
| 406 | fifo_mode ^= 1; |
| 407 | ahd_set_modes(ahd, fifo_mode, fifo_mode); |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 408 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | if (ahd_scb_active_in_fifo(ahd, scb) == 0) |
| 410 | continue; |
| 411 | |
| 412 | ahd_run_data_fifo(ahd, scb); |
| 413 | |
| 414 | /* |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 415 | * Running this FIFO may cause a CFG4DATA for |
| 416 | * this same transaction to assert in the other |
| 417 | * FIFO or a new snapshot SAVEPTRS interrupt |
| 418 | * in this FIFO. Even running a FIFO may not |
| 419 | * clear the transaction if we are still waiting |
| 420 | * for data to drain to the host. We must loop |
| 421 | * until the transaction is not active in either |
| 422 | * FIFO just to be sure. Reset our loop counter |
| 423 | * so we will visit both FIFOs again before |
| 424 | * declaring this transaction finished. We |
| 425 | * also delay a bit so that status has a chance |
| 426 | * to change before we look at this FIFO again. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | */ |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 428 | ahd_delay(200); |
| 429 | goto rescan_fifos; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | } |
| 431 | ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); |
| 432 | ahd_set_scbptr(ahd, scbid); |
| 433 | if ((ahd_inb_scbram(ahd, SCB_SGPTR) & SG_LIST_NULL) == 0 |
| 434 | && ((ahd_inb_scbram(ahd, SCB_SGPTR) & SG_FULL_RESID) != 0 |
| 435 | || (ahd_inb_scbram(ahd, SCB_RESIDUAL_SGPTR) |
| 436 | & SG_LIST_NULL) != 0)) { |
| 437 | u_int comp_head; |
| 438 | |
| 439 | /* |
| 440 | * The transfer completed with a residual. |
| 441 | * Place this SCB on the complete DMA list |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 442 | * so that we update our in-core copy of the |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | * SCB before completing the command. |
| 444 | */ |
| 445 | ahd_outb(ahd, SCB_SCSI_STATUS, 0); |
| 446 | ahd_outb(ahd, SCB_SGPTR, |
| 447 | ahd_inb_scbram(ahd, SCB_SGPTR) |
| 448 | | SG_STATUS_VALID); |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 449 | ahd_outw(ahd, SCB_TAG, scbid); |
| 450 | ahd_outw(ahd, SCB_NEXT_COMPLETE, SCB_LIST_NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | comp_head = ahd_inw(ahd, COMPLETE_DMA_SCB_HEAD); |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 452 | if (SCBID_IS_NULL(comp_head)) { |
| 453 | ahd_outw(ahd, COMPLETE_DMA_SCB_HEAD, scbid); |
| 454 | ahd_outw(ahd, COMPLETE_DMA_SCB_TAIL, scbid); |
| 455 | } else { |
| 456 | u_int tail; |
| 457 | |
| 458 | tail = ahd_inw(ahd, COMPLETE_DMA_SCB_TAIL); |
| 459 | ahd_set_scbptr(ahd, tail); |
| 460 | ahd_outw(ahd, SCB_NEXT_COMPLETE, scbid); |
| 461 | ahd_outw(ahd, COMPLETE_DMA_SCB_TAIL, scbid); |
| 462 | ahd_set_scbptr(ahd, scbid); |
| 463 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | } else |
| 465 | ahd_complete_scb(ahd, scb); |
| 466 | } |
| 467 | ahd_set_scbptr(ahd, saved_scbptr); |
| 468 | |
| 469 | /* |
| 470 | * Setup for command channel portion of flush. |
| 471 | */ |
| 472 | ahd_set_modes(ahd, AHD_MODE_CCHAN, AHD_MODE_CCHAN); |
| 473 | |
| 474 | /* |
| 475 | * Wait for any inprogress DMA to complete and clear DMA state |
| 476 | * if this if for an SCB in the qinfifo. |
| 477 | */ |
| 478 | while (((ccscbctl = ahd_inb(ahd, CCSCBCTL)) & (CCARREN|CCSCBEN)) != 0) { |
| 479 | |
| 480 | if ((ccscbctl & (CCSCBDIR|CCARREN)) == (CCSCBDIR|CCARREN)) { |
| 481 | if ((ccscbctl & ARRDONE) != 0) |
| 482 | break; |
| 483 | } else if ((ccscbctl & CCSCBDONE) != 0) |
| 484 | break; |
| 485 | ahd_delay(200); |
| 486 | } |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 487 | /* |
| 488 | * We leave the sequencer to cleanup in the case of DMA's to |
| 489 | * update the qoutfifo. In all other cases (DMA's to the |
| 490 | * chip or a push of an SCB from the COMPLETE_DMA_SCB list), |
| 491 | * we disable the DMA engine so that the sequencer will not |
| 492 | * attempt to handle the DMA completion. |
| 493 | */ |
| 494 | if ((ccscbctl & CCSCBDIR) != 0 || (ccscbctl & ARRDONE) != 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | ahd_outb(ahd, CCSCBCTL, ccscbctl & ~(CCARREN|CCSCBEN)); |
| 496 | |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 497 | /* |
| 498 | * Complete any SCBs that just finished |
| 499 | * being DMA'ed into the qoutfifo. |
| 500 | */ |
| 501 | ahd_run_qoutfifo(ahd); |
| 502 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | saved_scbptr = ahd_get_scbptr(ahd); |
| 504 | /* |
| 505 | * Manually update/complete any completed SCBs that are waiting to be |
| 506 | * DMA'ed back up to the host. |
| 507 | */ |
| 508 | scbid = ahd_inw(ahd, COMPLETE_DMA_SCB_HEAD); |
| 509 | while (!SCBID_IS_NULL(scbid)) { |
| 510 | uint8_t *hscb_ptr; |
| 511 | u_int i; |
| 512 | |
| 513 | ahd_set_scbptr(ahd, scbid); |
| 514 | next_scbid = ahd_inw_scbram(ahd, SCB_NEXT_COMPLETE); |
| 515 | scb = ahd_lookup_scb(ahd, scbid); |
| 516 | if (scb == NULL) { |
| 517 | printf("%s: Warning - DMA-up and complete " |
| 518 | "SCB %d invalid\n", ahd_name(ahd), scbid); |
| 519 | continue; |
| 520 | } |
| 521 | hscb_ptr = (uint8_t *)scb->hscb; |
| 522 | for (i = 0; i < sizeof(struct hardware_scb); i++) |
| 523 | *hscb_ptr++ = ahd_inb_scbram(ahd, SCB_BASE + i); |
| 524 | |
| 525 | ahd_complete_scb(ahd, scb); |
| 526 | scbid = next_scbid; |
| 527 | } |
| 528 | ahd_outw(ahd, COMPLETE_DMA_SCB_HEAD, SCB_LIST_NULL); |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 529 | ahd_outw(ahd, COMPLETE_DMA_SCB_TAIL, SCB_LIST_NULL); |
| 530 | |
| 531 | scbid = ahd_inw(ahd, COMPLETE_ON_QFREEZE_HEAD); |
| 532 | while (!SCBID_IS_NULL(scbid)) { |
| 533 | |
| 534 | ahd_set_scbptr(ahd, scbid); |
| 535 | next_scbid = ahd_inw_scbram(ahd, SCB_NEXT_COMPLETE); |
| 536 | scb = ahd_lookup_scb(ahd, scbid); |
| 537 | if (scb == NULL) { |
| 538 | printf("%s: Warning - Complete Qfrz SCB %d invalid\n", |
| 539 | ahd_name(ahd), scbid); |
| 540 | continue; |
| 541 | } |
| 542 | |
| 543 | ahd_complete_scb(ahd, scb); |
| 544 | scbid = next_scbid; |
| 545 | } |
| 546 | ahd_outw(ahd, COMPLETE_ON_QFREEZE_HEAD, SCB_LIST_NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | |
| 548 | scbid = ahd_inw(ahd, COMPLETE_SCB_HEAD); |
| 549 | while (!SCBID_IS_NULL(scbid)) { |
| 550 | |
| 551 | ahd_set_scbptr(ahd, scbid); |
| 552 | next_scbid = ahd_inw_scbram(ahd, SCB_NEXT_COMPLETE); |
| 553 | scb = ahd_lookup_scb(ahd, scbid); |
| 554 | if (scb == NULL) { |
| 555 | printf("%s: Warning - Complete SCB %d invalid\n", |
| 556 | ahd_name(ahd), scbid); |
| 557 | continue; |
| 558 | } |
| 559 | |
| 560 | ahd_complete_scb(ahd, scb); |
| 561 | scbid = next_scbid; |
| 562 | } |
| 563 | ahd_outw(ahd, COMPLETE_SCB_HEAD, SCB_LIST_NULL); |
| 564 | |
| 565 | /* |
| 566 | * Restore state. |
| 567 | */ |
| 568 | ahd_set_scbptr(ahd, saved_scbptr); |
| 569 | ahd_restore_modes(ahd, saved_modes); |
| 570 | ahd->flags |= AHD_UPDATE_PEND_CMDS; |
| 571 | } |
| 572 | |
| 573 | /* |
| 574 | * Determine if an SCB for a packetized transaction |
| 575 | * is active in a FIFO. |
| 576 | */ |
| 577 | static int |
| 578 | ahd_scb_active_in_fifo(struct ahd_softc *ahd, struct scb *scb) |
| 579 | { |
| 580 | |
| 581 | /* |
| 582 | * The FIFO is only active for our transaction if |
| 583 | * the SCBPTR matches the SCB's ID and the firmware |
| 584 | * has installed a handler for the FIFO or we have |
| 585 | * a pending SAVEPTRS or CFG4DATA interrupt. |
| 586 | */ |
| 587 | if (ahd_get_scbptr(ahd) != SCB_GET_TAG(scb) |
| 588 | || ((ahd_inb(ahd, LONGJMP_ADDR+1) & INVALID_ADDR) != 0 |
| 589 | && (ahd_inb(ahd, SEQINTSRC) & (CFG4DATA|SAVEPTRS)) == 0)) |
| 590 | return (0); |
| 591 | |
| 592 | return (1); |
| 593 | } |
| 594 | |
| 595 | /* |
| 596 | * Run a data fifo to completion for a transaction we know |
| 597 | * has completed across the SCSI bus (good status has been |
| 598 | * received). We are already set to the correct FIFO mode |
| 599 | * on entry to this routine. |
| 600 | * |
| 601 | * This function attempts to operate exactly as the firmware |
| 602 | * would when running this FIFO. Care must be taken to update |
| 603 | * this routine any time the firmware's FIFO algorithm is |
| 604 | * changed. |
| 605 | */ |
| 606 | static void |
| 607 | ahd_run_data_fifo(struct ahd_softc *ahd, struct scb *scb) |
| 608 | { |
| 609 | u_int seqintsrc; |
| 610 | |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 611 | seqintsrc = ahd_inb(ahd, SEQINTSRC); |
| 612 | if ((seqintsrc & CFG4DATA) != 0) { |
| 613 | uint32_t datacnt; |
| 614 | uint32_t sgptr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 615 | |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 616 | /* |
| 617 | * Clear full residual flag. |
| 618 | */ |
| 619 | sgptr = ahd_inl_scbram(ahd, SCB_SGPTR) & ~SG_FULL_RESID; |
| 620 | ahd_outb(ahd, SCB_SGPTR, sgptr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 621 | |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 622 | /* |
| 623 | * Load datacnt and address. |
| 624 | */ |
| 625 | datacnt = ahd_inl_scbram(ahd, SCB_DATACNT); |
| 626 | if ((datacnt & AHD_DMA_LAST_SEG) != 0) { |
| 627 | sgptr |= LAST_SEG; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 628 | ahd_outb(ahd, SG_STATE, 0); |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 629 | } else |
| 630 | ahd_outb(ahd, SG_STATE, LOADING_NEEDED); |
| 631 | ahd_outq(ahd, HADDR, ahd_inq_scbram(ahd, SCB_DATAPTR)); |
| 632 | ahd_outl(ahd, HCNT, datacnt & AHD_SG_LEN_MASK); |
| 633 | ahd_outb(ahd, SG_CACHE_PRE, sgptr); |
| 634 | ahd_outb(ahd, DFCNTRL, PRELOADEN|SCSIEN|HDMAEN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 635 | |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 636 | /* |
| 637 | * Initialize Residual Fields. |
| 638 | */ |
| 639 | ahd_outb(ahd, SCB_RESIDUAL_DATACNT+3, datacnt >> 24); |
| 640 | ahd_outl(ahd, SCB_RESIDUAL_SGPTR, sgptr & SG_PTR_MASK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 641 | |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 642 | /* |
| 643 | * Mark the SCB as having a FIFO in use. |
| 644 | */ |
| 645 | ahd_outb(ahd, SCB_FIFO_USE_COUNT, |
| 646 | ahd_inb_scbram(ahd, SCB_FIFO_USE_COUNT) + 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 647 | |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 648 | /* |
| 649 | * Install a "fake" handler for this FIFO. |
| 650 | */ |
| 651 | ahd_outw(ahd, LONGJMP_ADDR, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 652 | |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 653 | /* |
| 654 | * Notify the hardware that we have satisfied |
| 655 | * this sequencer interrupt. |
| 656 | */ |
| 657 | ahd_outb(ahd, CLRSEQINTSRC, CLRCFG4DATA); |
| 658 | } else if ((seqintsrc & SAVEPTRS) != 0) { |
| 659 | uint32_t sgptr; |
| 660 | uint32_t resid; |
| 661 | |
| 662 | if ((ahd_inb(ahd, LONGJMP_ADDR+1)&INVALID_ADDR) != 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | /* |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 664 | * Snapshot Save Pointers. All that |
| 665 | * is necessary to clear the snapshot |
| 666 | * is a CLRCHN. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | */ |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 668 | goto clrchn; |
| 669 | } |
| 670 | |
| 671 | /* |
| 672 | * Disable S/G fetch so the DMA engine |
| 673 | * is available to future users. |
| 674 | */ |
| 675 | if ((ahd_inb(ahd, SG_STATE) & FETCH_INPROG) != 0) |
| 676 | ahd_outb(ahd, CCSGCTL, 0); |
| 677 | ahd_outb(ahd, SG_STATE, 0); |
| 678 | |
| 679 | /* |
| 680 | * Flush the data FIFO. Strickly only |
| 681 | * necessary for Rev A parts. |
| 682 | */ |
| 683 | ahd_outb(ahd, DFCNTRL, ahd_inb(ahd, DFCNTRL) | FIFOFLUSH); |
| 684 | |
| 685 | /* |
| 686 | * Calculate residual. |
| 687 | */ |
| 688 | sgptr = ahd_inl_scbram(ahd, SCB_RESIDUAL_SGPTR); |
| 689 | resid = ahd_inl(ahd, SHCNT); |
| 690 | resid |= ahd_inb_scbram(ahd, SCB_RESIDUAL_DATACNT+3) << 24; |
| 691 | ahd_outl(ahd, SCB_RESIDUAL_DATACNT, resid); |
| 692 | if ((ahd_inb(ahd, SG_CACHE_SHADOW) & LAST_SEG) == 0) { |
| 693 | /* |
| 694 | * Must back up to the correct S/G element. |
| 695 | * Typically this just means resetting our |
| 696 | * low byte to the offset in the SG_CACHE, |
| 697 | * but if we wrapped, we have to correct |
| 698 | * the other bytes of the sgptr too. |
| 699 | */ |
| 700 | if ((ahd_inb(ahd, SG_CACHE_SHADOW) & 0x80) != 0 |
| 701 | && (sgptr & 0x80) == 0) |
| 702 | sgptr -= 0x100; |
| 703 | sgptr &= ~0xFF; |
| 704 | sgptr |= ahd_inb(ahd, SG_CACHE_SHADOW) |
| 705 | & SG_ADDR_MASK; |
| 706 | ahd_outl(ahd, SCB_RESIDUAL_SGPTR, sgptr); |
| 707 | ahd_outb(ahd, SCB_RESIDUAL_DATACNT + 3, 0); |
| 708 | } else if ((resid & AHD_SG_LEN_MASK) == 0) { |
| 709 | ahd_outb(ahd, SCB_RESIDUAL_SGPTR, |
| 710 | sgptr | SG_LIST_NULL); |
| 711 | } |
| 712 | /* |
| 713 | * Save Pointers. |
| 714 | */ |
| 715 | ahd_outq(ahd, SCB_DATAPTR, ahd_inq(ahd, SHADDR)); |
| 716 | ahd_outl(ahd, SCB_DATACNT, resid); |
| 717 | ahd_outl(ahd, SCB_SGPTR, sgptr); |
| 718 | ahd_outb(ahd, CLRSEQINTSRC, CLRSAVEPTRS); |
| 719 | ahd_outb(ahd, SEQIMODE, |
| 720 | ahd_inb(ahd, SEQIMODE) | ENSAVEPTRS); |
| 721 | /* |
| 722 | * If the data is to the SCSI bus, we are |
| 723 | * done, otherwise wait for FIFOEMP. |
| 724 | */ |
| 725 | if ((ahd_inb(ahd, DFCNTRL) & DIRECTION) != 0) |
| 726 | goto clrchn; |
| 727 | } else if ((ahd_inb(ahd, SG_STATE) & LOADING_NEEDED) != 0) { |
| 728 | uint32_t sgptr; |
| 729 | uint64_t data_addr; |
| 730 | uint32_t data_len; |
| 731 | u_int dfcntrl; |
| 732 | |
| 733 | /* |
| 734 | * Disable S/G fetch so the DMA engine |
| 735 | * is available to future users. We won't |
| 736 | * be using the DMA engine to load segments. |
| 737 | */ |
| 738 | if ((ahd_inb(ahd, SG_STATE) & FETCH_INPROG) != 0) { |
| 739 | ahd_outb(ahd, CCSGCTL, 0); |
| 740 | ahd_outb(ahd, SG_STATE, LOADING_NEEDED); |
| 741 | } |
| 742 | |
| 743 | /* |
| 744 | * Wait for the DMA engine to notice that the |
| 745 | * host transfer is enabled and that there is |
| 746 | * space in the S/G FIFO for new segments before |
| 747 | * loading more segments. |
| 748 | */ |
| 749 | if ((ahd_inb(ahd, DFSTATUS) & PRELOAD_AVAIL) != 0 |
| 750 | && (ahd_inb(ahd, DFCNTRL) & HDMAENACK) != 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 751 | |
| 752 | /* |
| 753 | * Determine the offset of the next S/G |
| 754 | * element to load. |
| 755 | */ |
| 756 | sgptr = ahd_inl_scbram(ahd, SCB_RESIDUAL_SGPTR); |
| 757 | sgptr &= SG_PTR_MASK; |
| 758 | if ((ahd->flags & AHD_64BIT_ADDRESSING) != 0) { |
| 759 | struct ahd_dma64_seg *sg; |
| 760 | |
| 761 | sg = ahd_sg_bus_to_virt(ahd, scb, sgptr); |
| 762 | data_addr = sg->addr; |
| 763 | data_len = sg->len; |
| 764 | sgptr += sizeof(*sg); |
| 765 | } else { |
| 766 | struct ahd_dma_seg *sg; |
| 767 | |
| 768 | sg = ahd_sg_bus_to_virt(ahd, scb, sgptr); |
| 769 | data_addr = sg->len & AHD_SG_HIGH_ADDR_MASK; |
| 770 | data_addr <<= 8; |
| 771 | data_addr |= sg->addr; |
| 772 | data_len = sg->len; |
| 773 | sgptr += sizeof(*sg); |
| 774 | } |
| 775 | |
| 776 | /* |
| 777 | * Update residual information. |
| 778 | */ |
| 779 | ahd_outb(ahd, SCB_RESIDUAL_DATACNT+3, data_len >> 24); |
| 780 | ahd_outl(ahd, SCB_RESIDUAL_SGPTR, sgptr); |
| 781 | |
| 782 | /* |
| 783 | * Load the S/G. |
| 784 | */ |
| 785 | if (data_len & AHD_DMA_LAST_SEG) { |
| 786 | sgptr |= LAST_SEG; |
| 787 | ahd_outb(ahd, SG_STATE, 0); |
| 788 | } |
| 789 | ahd_outq(ahd, HADDR, data_addr); |
| 790 | ahd_outl(ahd, HCNT, data_len & AHD_SG_LEN_MASK); |
| 791 | ahd_outb(ahd, SG_CACHE_PRE, sgptr & 0xFF); |
| 792 | |
| 793 | /* |
| 794 | * Advertise the segment to the hardware. |
| 795 | */ |
| 796 | dfcntrl = ahd_inb(ahd, DFCNTRL)|PRELOADEN|HDMAEN; |
Hannes Reinecke | ba62cd2 | 2006-01-12 12:07:02 +0100 | [diff] [blame] | 797 | if ((ahd->features & AHD_NEW_DFCNTRL_OPTS) != 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 798 | /* |
| 799 | * Use SCSIENWRDIS so that SCSIEN |
| 800 | * is never modified by this |
| 801 | * operation. |
| 802 | */ |
| 803 | dfcntrl |= SCSIENWRDIS; |
| 804 | } |
| 805 | ahd_outb(ahd, DFCNTRL, dfcntrl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 806 | } |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 807 | } else if ((ahd_inb(ahd, SG_CACHE_SHADOW) & LAST_SEG_DONE) != 0) { |
| 808 | |
| 809 | /* |
| 810 | * Transfer completed to the end of SG list |
| 811 | * and has flushed to the host. |
| 812 | */ |
| 813 | ahd_outb(ahd, SCB_SGPTR, |
| 814 | ahd_inb_scbram(ahd, SCB_SGPTR) | SG_LIST_NULL); |
| 815 | goto clrchn; |
| 816 | } else if ((ahd_inb(ahd, DFSTATUS) & FIFOEMP) != 0) { |
| 817 | clrchn: |
| 818 | /* |
| 819 | * Clear any handler for this FIFO, decrement |
| 820 | * the FIFO use count for the SCB, and release |
| 821 | * the FIFO. |
| 822 | */ |
| 823 | ahd_outb(ahd, LONGJMP_ADDR + 1, INVALID_ADDR); |
| 824 | ahd_outb(ahd, SCB_FIFO_USE_COUNT, |
| 825 | ahd_inb_scbram(ahd, SCB_FIFO_USE_COUNT) - 1); |
| 826 | ahd_outb(ahd, DFFSXFRCTL, CLRCHN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 827 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 828 | } |
| 829 | |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 830 | /* |
| 831 | * Look for entries in the QoutFIFO that have completed. |
| 832 | * The valid_tag completion field indicates the validity |
| 833 | * of the entry - the valid value toggles each time through |
| 834 | * the queue. We use the sg_status field in the completion |
| 835 | * entry to avoid referencing the hscb if the completion |
| 836 | * occurred with no errors and no residual. sg_status is |
| 837 | * a copy of the first byte (little endian) of the sgptr |
| 838 | * hscb field. |
| 839 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 840 | void |
| 841 | ahd_run_qoutfifo(struct ahd_softc *ahd) |
| 842 | { |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 843 | struct ahd_completion *completion; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 844 | struct scb *scb; |
| 845 | u_int scb_index; |
| 846 | |
| 847 | if ((ahd->flags & AHD_RUNNING_QOUTFIFO) != 0) |
| 848 | panic("ahd_run_qoutfifo recursion"); |
| 849 | ahd->flags |= AHD_RUNNING_QOUTFIFO; |
| 850 | ahd_sync_qoutfifo(ahd, BUS_DMASYNC_POSTREAD); |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 851 | for (;;) { |
| 852 | completion = &ahd->qoutfifo[ahd->qoutfifonext]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 853 | |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 854 | if (completion->valid_tag != ahd->qoutfifonext_valid_tag) |
| 855 | break; |
| 856 | |
| 857 | scb_index = ahd_le16toh(completion->tag); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 858 | scb = ahd_lookup_scb(ahd, scb_index); |
| 859 | if (scb == NULL) { |
| 860 | printf("%s: WARNING no command for scb %d " |
| 861 | "(cmdcmplt)\nQOUTPOS = %d\n", |
| 862 | ahd_name(ahd), scb_index, |
| 863 | ahd->qoutfifonext); |
| 864 | ahd_dump_card_state(ahd); |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 865 | } else if ((completion->sg_status & SG_STATUS_VALID) != 0) { |
| 866 | ahd_handle_scb_status(ahd, scb); |
| 867 | } else { |
| 868 | ahd_done(ahd, scb); |
| 869 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 870 | |
| 871 | ahd->qoutfifonext = (ahd->qoutfifonext+1) & (AHD_QOUT_SIZE-1); |
| 872 | if (ahd->qoutfifonext == 0) |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 873 | ahd->qoutfifonext_valid_tag ^= QOUTFIFO_ENTRY_VALID; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 874 | } |
| 875 | ahd->flags &= ~AHD_RUNNING_QOUTFIFO; |
| 876 | } |
| 877 | |
| 878 | /************************* Interrupt Handling *********************************/ |
| 879 | void |
| 880 | ahd_handle_hwerrint(struct ahd_softc *ahd) |
| 881 | { |
| 882 | /* |
| 883 | * Some catastrophic hardware error has occurred. |
| 884 | * Print it for the user and disable the controller. |
| 885 | */ |
| 886 | int i; |
| 887 | int error; |
| 888 | |
| 889 | error = ahd_inb(ahd, ERROR); |
| 890 | for (i = 0; i < num_errors; i++) { |
| 891 | if ((error & ahd_hard_errors[i].errno) != 0) |
| 892 | printf("%s: hwerrint, %s\n", |
| 893 | ahd_name(ahd), ahd_hard_errors[i].errmesg); |
| 894 | } |
| 895 | |
| 896 | ahd_dump_card_state(ahd); |
| 897 | panic("BRKADRINT"); |
| 898 | |
| 899 | /* Tell everyone that this HBA is no longer available */ |
| 900 | ahd_abort_scbs(ahd, CAM_TARGET_WILDCARD, ALL_CHANNELS, |
| 901 | CAM_LUN_WILDCARD, SCB_LIST_NULL, ROLE_UNKNOWN, |
| 902 | CAM_NO_HBA); |
| 903 | |
| 904 | /* Tell the system that this controller has gone away. */ |
| 905 | ahd_free(ahd); |
| 906 | } |
| 907 | |
| 908 | void |
| 909 | ahd_handle_seqint(struct ahd_softc *ahd, u_int intstat) |
| 910 | { |
| 911 | u_int seqintcode; |
| 912 | |
| 913 | /* |
| 914 | * Save the sequencer interrupt code and clear the SEQINT |
| 915 | * bit. We will unpause the sequencer, if appropriate, |
| 916 | * after servicing the request. |
| 917 | */ |
| 918 | seqintcode = ahd_inb(ahd, SEQINTCODE); |
| 919 | ahd_outb(ahd, CLRINT, CLRSEQINT); |
| 920 | if ((ahd->bugs & AHD_INTCOLLISION_BUG) != 0) { |
| 921 | /* |
| 922 | * Unpause the sequencer and let it clear |
| 923 | * SEQINT by writing NO_SEQINT to it. This |
| 924 | * will cause the sequencer to be paused again, |
| 925 | * which is the expected state of this routine. |
| 926 | */ |
| 927 | ahd_unpause(ahd); |
| 928 | while (!ahd_is_paused(ahd)) |
| 929 | ; |
| 930 | ahd_outb(ahd, CLRINT, CLRSEQINT); |
| 931 | } |
| 932 | ahd_update_modes(ahd); |
| 933 | #ifdef AHD_DEBUG |
| 934 | if ((ahd_debug & AHD_SHOW_MISC) != 0) |
| 935 | printf("%s: Handle Seqint Called for code %d\n", |
| 936 | ahd_name(ahd), seqintcode); |
| 937 | #endif |
| 938 | switch (seqintcode) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 939 | case ENTERING_NONPACK: |
| 940 | { |
| 941 | struct scb *scb; |
| 942 | u_int scbid; |
| 943 | |
| 944 | AHD_ASSERT_MODES(ahd, ~(AHD_MODE_UNKNOWN_MSK|AHD_MODE_CFG_MSK), |
| 945 | ~(AHD_MODE_UNKNOWN_MSK|AHD_MODE_CFG_MSK)); |
| 946 | scbid = ahd_get_scbptr(ahd); |
| 947 | scb = ahd_lookup_scb(ahd, scbid); |
| 948 | if (scb == NULL) { |
| 949 | /* |
| 950 | * Somehow need to know if this |
| 951 | * is from a selection or reselection. |
| 952 | * From that, we can determine target |
| 953 | * ID so we at least have an I_T nexus. |
| 954 | */ |
| 955 | } else { |
| 956 | ahd_outb(ahd, SAVED_SCSIID, scb->hscb->scsiid); |
| 957 | ahd_outb(ahd, SAVED_LUN, scb->hscb->lun); |
| 958 | ahd_outb(ahd, SEQ_FLAGS, 0x0); |
| 959 | } |
| 960 | if ((ahd_inb(ahd, LQISTAT2) & LQIPHASE_OUTPKT) != 0 |
| 961 | && (ahd_inb(ahd, SCSISIGO) & ATNO) != 0) { |
| 962 | /* |
| 963 | * Phase change after read stream with |
| 964 | * CRC error with P0 asserted on last |
| 965 | * packet. |
| 966 | */ |
| 967 | #ifdef AHD_DEBUG |
| 968 | if ((ahd_debug & AHD_SHOW_RECOVERY) != 0) |
| 969 | printf("%s: Assuming LQIPHASE_NLQ with " |
| 970 | "P0 assertion\n", ahd_name(ahd)); |
| 971 | #endif |
| 972 | } |
| 973 | #ifdef AHD_DEBUG |
| 974 | if ((ahd_debug & AHD_SHOW_RECOVERY) != 0) |
| 975 | printf("%s: Entering NONPACK\n", ahd_name(ahd)); |
| 976 | #endif |
| 977 | break; |
| 978 | } |
| 979 | case INVALID_SEQINT: |
Hannes Reinecke | 9e691df | 2006-03-08 12:59:03 +0100 | [diff] [blame] | 980 | printf("%s: Invalid Sequencer interrupt occurred, " |
| 981 | "resetting channel.\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 982 | ahd_name(ahd)); |
Hannes Reinecke | 9e691df | 2006-03-08 12:59:03 +0100 | [diff] [blame] | 983 | #ifdef AHD_DEBUG |
| 984 | if ((ahd_debug & AHD_SHOW_RECOVERY) != 0) |
| 985 | ahd_dump_card_state(ahd); |
| 986 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 987 | ahd_reset_channel(ahd, 'A', /*Initiate Reset*/TRUE); |
| 988 | break; |
| 989 | case STATUS_OVERRUN: |
| 990 | { |
| 991 | struct scb *scb; |
| 992 | u_int scbid; |
| 993 | |
| 994 | scbid = ahd_get_scbptr(ahd); |
| 995 | scb = ahd_lookup_scb(ahd, scbid); |
| 996 | if (scb != NULL) |
| 997 | ahd_print_path(ahd, scb); |
| 998 | else |
| 999 | printf("%s: ", ahd_name(ahd)); |
| 1000 | printf("SCB %d Packetized Status Overrun", scbid); |
| 1001 | ahd_dump_card_state(ahd); |
| 1002 | ahd_reset_channel(ahd, 'A', /*Initiate Reset*/TRUE); |
| 1003 | break; |
| 1004 | } |
| 1005 | case CFG4ISTAT_INTR: |
| 1006 | { |
| 1007 | struct scb *scb; |
| 1008 | u_int scbid; |
| 1009 | |
| 1010 | scbid = ahd_get_scbptr(ahd); |
| 1011 | scb = ahd_lookup_scb(ahd, scbid); |
| 1012 | if (scb == NULL) { |
| 1013 | ahd_dump_card_state(ahd); |
| 1014 | printf("CFG4ISTAT: Free SCB %d referenced", scbid); |
| 1015 | panic("For safety"); |
| 1016 | } |
| 1017 | ahd_outq(ahd, HADDR, scb->sense_busaddr); |
| 1018 | ahd_outw(ahd, HCNT, AHD_SENSE_BUFSIZE); |
| 1019 | ahd_outb(ahd, HCNT + 2, 0); |
| 1020 | ahd_outb(ahd, SG_CACHE_PRE, SG_LAST_SEG); |
| 1021 | ahd_outb(ahd, DFCNTRL, PRELOADEN|SCSIEN|HDMAEN); |
| 1022 | break; |
| 1023 | } |
| 1024 | case ILLEGAL_PHASE: |
| 1025 | { |
| 1026 | u_int bus_phase; |
| 1027 | |
| 1028 | bus_phase = ahd_inb(ahd, SCSISIGI) & PHASE_MASK; |
| 1029 | printf("%s: ILLEGAL_PHASE 0x%x\n", |
| 1030 | ahd_name(ahd), bus_phase); |
| 1031 | |
| 1032 | switch (bus_phase) { |
| 1033 | case P_DATAOUT: |
| 1034 | case P_DATAIN: |
| 1035 | case P_DATAOUT_DT: |
| 1036 | case P_DATAIN_DT: |
| 1037 | case P_MESGOUT: |
| 1038 | case P_STATUS: |
| 1039 | case P_MESGIN: |
| 1040 | ahd_reset_channel(ahd, 'A', /*Initiate Reset*/TRUE); |
| 1041 | printf("%s: Issued Bus Reset.\n", ahd_name(ahd)); |
| 1042 | break; |
| 1043 | case P_COMMAND: |
| 1044 | { |
| 1045 | struct ahd_devinfo devinfo; |
| 1046 | struct scb *scb; |
| 1047 | struct ahd_initiator_tinfo *targ_info; |
| 1048 | struct ahd_tmode_tstate *tstate; |
| 1049 | struct ahd_transinfo *tinfo; |
| 1050 | u_int scbid; |
| 1051 | |
| 1052 | /* |
| 1053 | * If a target takes us into the command phase |
| 1054 | * assume that it has been externally reset and |
| 1055 | * has thus lost our previous packetized negotiation |
Hannes Reinecke | b0d2364 | 2006-04-07 13:47:03 +0200 | [diff] [blame] | 1056 | * agreement. |
| 1057 | * Revert to async/narrow transfers until we |
| 1058 | * can renegotiate with the device and notify |
| 1059 | * the OSM about the reset. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1060 | */ |
| 1061 | scbid = ahd_get_scbptr(ahd); |
| 1062 | scb = ahd_lookup_scb(ahd, scbid); |
| 1063 | if (scb == NULL) { |
| 1064 | printf("Invalid phase with no valid SCB. " |
| 1065 | "Resetting bus.\n"); |
| 1066 | ahd_reset_channel(ahd, 'A', |
| 1067 | /*Initiate Reset*/TRUE); |
| 1068 | break; |
| 1069 | } |
| 1070 | ahd_compile_devinfo(&devinfo, SCB_GET_OUR_ID(scb), |
| 1071 | SCB_GET_TARGET(ahd, scb), |
| 1072 | SCB_GET_LUN(scb), |
| 1073 | SCB_GET_CHANNEL(ahd, scb), |
| 1074 | ROLE_INITIATOR); |
| 1075 | targ_info = ahd_fetch_transinfo(ahd, |
| 1076 | devinfo.channel, |
| 1077 | devinfo.our_scsiid, |
| 1078 | devinfo.target, |
| 1079 | &tstate); |
| 1080 | tinfo = &targ_info->curr; |
| 1081 | ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT, |
| 1082 | AHD_TRANS_ACTIVE, /*paused*/TRUE); |
| 1083 | ahd_set_syncrate(ahd, &devinfo, /*period*/0, |
| 1084 | /*offset*/0, /*ppr_options*/0, |
| 1085 | AHD_TRANS_ACTIVE, /*paused*/TRUE); |
Hannes Reinecke | b0d2364 | 2006-04-07 13:47:03 +0200 | [diff] [blame] | 1086 | scb->flags |= SCB_EXTERNAL_RESET; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1087 | ahd_freeze_devq(ahd, scb); |
| 1088 | ahd_set_transaction_status(scb, CAM_REQUEUE_REQ); |
| 1089 | ahd_freeze_scb(scb); |
| 1090 | |
Hannes Reinecke | b0d2364 | 2006-04-07 13:47:03 +0200 | [diff] [blame] | 1091 | /* Notify XPT */ |
| 1092 | ahd_send_async(ahd, devinfo.channel, devinfo.target, |
| 1093 | CAM_LUN_WILDCARD, AC_SENT_BDR, NULL); |
| 1094 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1095 | /* |
| 1096 | * Allow the sequencer to continue with |
| 1097 | * non-pack processing. |
| 1098 | */ |
| 1099 | ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); |
| 1100 | ahd_outb(ahd, CLRLQOINT1, CLRLQOPHACHGINPKT); |
| 1101 | if ((ahd->bugs & AHD_CLRLQO_AUTOCLR_BUG) != 0) { |
| 1102 | ahd_outb(ahd, CLRLQOINT1, 0); |
| 1103 | } |
| 1104 | #ifdef AHD_DEBUG |
| 1105 | if ((ahd_debug & AHD_SHOW_RECOVERY) != 0) { |
| 1106 | ahd_print_path(ahd, scb); |
| 1107 | printf("Unexpected command phase from " |
| 1108 | "packetized target\n"); |
| 1109 | } |
| 1110 | #endif |
| 1111 | break; |
| 1112 | } |
| 1113 | } |
| 1114 | break; |
| 1115 | } |
| 1116 | case CFG4OVERRUN: |
| 1117 | { |
| 1118 | struct scb *scb; |
| 1119 | u_int scb_index; |
| 1120 | |
| 1121 | #ifdef AHD_DEBUG |
| 1122 | if ((ahd_debug & AHD_SHOW_RECOVERY) != 0) { |
| 1123 | printf("%s: CFG4OVERRUN mode = %x\n", ahd_name(ahd), |
| 1124 | ahd_inb(ahd, MODE_PTR)); |
| 1125 | } |
| 1126 | #endif |
| 1127 | scb_index = ahd_get_scbptr(ahd); |
| 1128 | scb = ahd_lookup_scb(ahd, scb_index); |
| 1129 | if (scb == NULL) { |
| 1130 | /* |
| 1131 | * Attempt to transfer to an SCB that is |
| 1132 | * not outstanding. |
| 1133 | */ |
| 1134 | ahd_assert_atn(ahd); |
| 1135 | ahd_outb(ahd, MSG_OUT, HOST_MSG); |
| 1136 | ahd->msgout_buf[0] = MSG_ABORT_TASK; |
| 1137 | ahd->msgout_len = 1; |
| 1138 | ahd->msgout_index = 0; |
| 1139 | ahd->msg_type = MSG_TYPE_INITIATOR_MSGOUT; |
| 1140 | /* |
| 1141 | * Clear status received flag to prevent any |
| 1142 | * attempt to complete this bogus SCB. |
| 1143 | */ |
| 1144 | ahd_outb(ahd, SCB_CONTROL, |
| 1145 | ahd_inb_scbram(ahd, SCB_CONTROL) |
| 1146 | & ~STATUS_RCVD); |
| 1147 | } |
| 1148 | break; |
| 1149 | } |
| 1150 | case DUMP_CARD_STATE: |
| 1151 | { |
| 1152 | ahd_dump_card_state(ahd); |
| 1153 | break; |
| 1154 | } |
| 1155 | case PDATA_REINIT: |
| 1156 | { |
| 1157 | #ifdef AHD_DEBUG |
| 1158 | if ((ahd_debug & AHD_SHOW_RECOVERY) != 0) { |
| 1159 | printf("%s: PDATA_REINIT - DFCNTRL = 0x%x " |
| 1160 | "SG_CACHE_SHADOW = 0x%x\n", |
| 1161 | ahd_name(ahd), ahd_inb(ahd, DFCNTRL), |
| 1162 | ahd_inb(ahd, SG_CACHE_SHADOW)); |
| 1163 | } |
| 1164 | #endif |
| 1165 | ahd_reinitialize_dataptrs(ahd); |
| 1166 | break; |
| 1167 | } |
| 1168 | case HOST_MSG_LOOP: |
| 1169 | { |
| 1170 | struct ahd_devinfo devinfo; |
| 1171 | |
| 1172 | /* |
| 1173 | * The sequencer has encountered a message phase |
| 1174 | * that requires host assistance for completion. |
| 1175 | * While handling the message phase(s), we will be |
| 1176 | * notified by the sequencer after each byte is |
| 1177 | * transfered so we can track bus phase changes. |
| 1178 | * |
| 1179 | * If this is the first time we've seen a HOST_MSG_LOOP |
| 1180 | * interrupt, initialize the state of the host message |
| 1181 | * loop. |
| 1182 | */ |
| 1183 | ahd_fetch_devinfo(ahd, &devinfo); |
| 1184 | if (ahd->msg_type == MSG_TYPE_NONE) { |
| 1185 | struct scb *scb; |
| 1186 | u_int scb_index; |
| 1187 | u_int bus_phase; |
| 1188 | |
| 1189 | bus_phase = ahd_inb(ahd, SCSISIGI) & PHASE_MASK; |
| 1190 | if (bus_phase != P_MESGIN |
| 1191 | && bus_phase != P_MESGOUT) { |
| 1192 | printf("ahd_intr: HOST_MSG_LOOP bad " |
| 1193 | "phase 0x%x\n", bus_phase); |
| 1194 | /* |
| 1195 | * Probably transitioned to bus free before |
| 1196 | * we got here. Just punt the message. |
| 1197 | */ |
| 1198 | ahd_dump_card_state(ahd); |
| 1199 | ahd_clear_intstat(ahd); |
| 1200 | ahd_restart(ahd); |
| 1201 | return; |
| 1202 | } |
| 1203 | |
| 1204 | scb_index = ahd_get_scbptr(ahd); |
| 1205 | scb = ahd_lookup_scb(ahd, scb_index); |
| 1206 | if (devinfo.role == ROLE_INITIATOR) { |
| 1207 | if (bus_phase == P_MESGOUT) |
| 1208 | ahd_setup_initiator_msgout(ahd, |
| 1209 | &devinfo, |
| 1210 | scb); |
| 1211 | else { |
| 1212 | ahd->msg_type = |
| 1213 | MSG_TYPE_INITIATOR_MSGIN; |
| 1214 | ahd->msgin_index = 0; |
| 1215 | } |
| 1216 | } |
| 1217 | #ifdef AHD_TARGET_MODE |
| 1218 | else { |
| 1219 | if (bus_phase == P_MESGOUT) { |
| 1220 | ahd->msg_type = |
| 1221 | MSG_TYPE_TARGET_MSGOUT; |
| 1222 | ahd->msgin_index = 0; |
| 1223 | } |
| 1224 | else |
| 1225 | ahd_setup_target_msgin(ahd, |
| 1226 | &devinfo, |
| 1227 | scb); |
| 1228 | } |
| 1229 | #endif |
| 1230 | } |
| 1231 | |
| 1232 | ahd_handle_message_phase(ahd); |
| 1233 | break; |
| 1234 | } |
| 1235 | case NO_MATCH: |
| 1236 | { |
| 1237 | /* Ensure we don't leave the selection hardware on */ |
| 1238 | AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); |
| 1239 | ahd_outb(ahd, SCSISEQ0, ahd_inb(ahd, SCSISEQ0) & ~ENSELO); |
| 1240 | |
| 1241 | printf("%s:%c:%d: no active SCB for reconnecting " |
| 1242 | "target - issuing BUS DEVICE RESET\n", |
| 1243 | ahd_name(ahd), 'A', ahd_inb(ahd, SELID) >> 4); |
| 1244 | printf("SAVED_SCSIID == 0x%x, SAVED_LUN == 0x%x, " |
| 1245 | "REG0 == 0x%x ACCUM = 0x%x\n", |
| 1246 | ahd_inb(ahd, SAVED_SCSIID), ahd_inb(ahd, SAVED_LUN), |
| 1247 | ahd_inw(ahd, REG0), ahd_inb(ahd, ACCUM)); |
| 1248 | printf("SEQ_FLAGS == 0x%x, SCBPTR == 0x%x, BTT == 0x%x, " |
| 1249 | "SINDEX == 0x%x\n", |
| 1250 | ahd_inb(ahd, SEQ_FLAGS), ahd_get_scbptr(ahd), |
| 1251 | ahd_find_busy_tcl(ahd, |
| 1252 | BUILD_TCL(ahd_inb(ahd, SAVED_SCSIID), |
| 1253 | ahd_inb(ahd, SAVED_LUN))), |
| 1254 | ahd_inw(ahd, SINDEX)); |
| 1255 | printf("SELID == 0x%x, SCB_SCSIID == 0x%x, SCB_LUN == 0x%x, " |
| 1256 | "SCB_CONTROL == 0x%x\n", |
| 1257 | ahd_inb(ahd, SELID), ahd_inb_scbram(ahd, SCB_SCSIID), |
| 1258 | ahd_inb_scbram(ahd, SCB_LUN), |
| 1259 | ahd_inb_scbram(ahd, SCB_CONTROL)); |
| 1260 | printf("SCSIBUS[0] == 0x%x, SCSISIGI == 0x%x\n", |
| 1261 | ahd_inb(ahd, SCSIBUS), ahd_inb(ahd, SCSISIGI)); |
| 1262 | printf("SXFRCTL0 == 0x%x\n", ahd_inb(ahd, SXFRCTL0)); |
| 1263 | printf("SEQCTL0 == 0x%x\n", ahd_inb(ahd, SEQCTL0)); |
| 1264 | ahd_dump_card_state(ahd); |
| 1265 | ahd->msgout_buf[0] = MSG_BUS_DEV_RESET; |
| 1266 | ahd->msgout_len = 1; |
| 1267 | ahd->msgout_index = 0; |
| 1268 | ahd->msg_type = MSG_TYPE_INITIATOR_MSGOUT; |
| 1269 | ahd_outb(ahd, MSG_OUT, HOST_MSG); |
| 1270 | ahd_assert_atn(ahd); |
| 1271 | break; |
| 1272 | } |
| 1273 | case PROTO_VIOLATION: |
| 1274 | { |
| 1275 | ahd_handle_proto_violation(ahd); |
| 1276 | break; |
| 1277 | } |
| 1278 | case IGN_WIDE_RES: |
| 1279 | { |
| 1280 | struct ahd_devinfo devinfo; |
| 1281 | |
| 1282 | ahd_fetch_devinfo(ahd, &devinfo); |
| 1283 | ahd_handle_ign_wide_residue(ahd, &devinfo); |
| 1284 | break; |
| 1285 | } |
| 1286 | case BAD_PHASE: |
| 1287 | { |
| 1288 | u_int lastphase; |
| 1289 | |
| 1290 | lastphase = ahd_inb(ahd, LASTPHASE); |
| 1291 | printf("%s:%c:%d: unknown scsi bus phase %x, " |
| 1292 | "lastphase = 0x%x. Attempting to continue\n", |
| 1293 | ahd_name(ahd), 'A', |
| 1294 | SCSIID_TARGET(ahd, ahd_inb(ahd, SAVED_SCSIID)), |
| 1295 | lastphase, ahd_inb(ahd, SCSISIGI)); |
| 1296 | break; |
| 1297 | } |
| 1298 | case MISSED_BUSFREE: |
| 1299 | { |
| 1300 | u_int lastphase; |
| 1301 | |
| 1302 | lastphase = ahd_inb(ahd, LASTPHASE); |
| 1303 | printf("%s:%c:%d: Missed busfree. " |
| 1304 | "Lastphase = 0x%x, Curphase = 0x%x\n", |
| 1305 | ahd_name(ahd), 'A', |
| 1306 | SCSIID_TARGET(ahd, ahd_inb(ahd, SAVED_SCSIID)), |
| 1307 | lastphase, ahd_inb(ahd, SCSISIGI)); |
| 1308 | ahd_restart(ahd); |
| 1309 | return; |
| 1310 | } |
| 1311 | case DATA_OVERRUN: |
| 1312 | { |
| 1313 | /* |
| 1314 | * When the sequencer detects an overrun, it |
| 1315 | * places the controller in "BITBUCKET" mode |
| 1316 | * and allows the target to complete its transfer. |
| 1317 | * Unfortunately, none of the counters get updated |
| 1318 | * when the controller is in this mode, so we have |
| 1319 | * no way of knowing how large the overrun was. |
| 1320 | */ |
| 1321 | struct scb *scb; |
| 1322 | u_int scbindex; |
| 1323 | #ifdef AHD_DEBUG |
| 1324 | u_int lastphase; |
| 1325 | #endif |
| 1326 | |
| 1327 | scbindex = ahd_get_scbptr(ahd); |
| 1328 | scb = ahd_lookup_scb(ahd, scbindex); |
| 1329 | #ifdef AHD_DEBUG |
| 1330 | lastphase = ahd_inb(ahd, LASTPHASE); |
| 1331 | if ((ahd_debug & AHD_SHOW_RECOVERY) != 0) { |
| 1332 | ahd_print_path(ahd, scb); |
| 1333 | printf("data overrun detected %s. Tag == 0x%x.\n", |
| 1334 | ahd_lookup_phase_entry(lastphase)->phasemsg, |
| 1335 | SCB_GET_TAG(scb)); |
| 1336 | ahd_print_path(ahd, scb); |
| 1337 | printf("%s seen Data Phase. Length = %ld. " |
| 1338 | "NumSGs = %d.\n", |
| 1339 | ahd_inb(ahd, SEQ_FLAGS) & DPHASE |
| 1340 | ? "Have" : "Haven't", |
| 1341 | ahd_get_transfer_length(scb), scb->sg_count); |
| 1342 | ahd_dump_sglist(scb); |
| 1343 | } |
| 1344 | #endif |
| 1345 | |
| 1346 | /* |
| 1347 | * Set this and it will take effect when the |
| 1348 | * target does a command complete. |
| 1349 | */ |
| 1350 | ahd_freeze_devq(ahd, scb); |
| 1351 | ahd_set_transaction_status(scb, CAM_DATA_RUN_ERR); |
| 1352 | ahd_freeze_scb(scb); |
| 1353 | break; |
| 1354 | } |
| 1355 | case MKMSG_FAILED: |
| 1356 | { |
| 1357 | struct ahd_devinfo devinfo; |
| 1358 | struct scb *scb; |
| 1359 | u_int scbid; |
| 1360 | |
| 1361 | ahd_fetch_devinfo(ahd, &devinfo); |
| 1362 | printf("%s:%c:%d:%d: Attempt to issue message failed\n", |
| 1363 | ahd_name(ahd), devinfo.channel, devinfo.target, |
| 1364 | devinfo.lun); |
| 1365 | scbid = ahd_get_scbptr(ahd); |
| 1366 | scb = ahd_lookup_scb(ahd, scbid); |
| 1367 | if (scb != NULL |
| 1368 | && (scb->flags & SCB_RECOVERY_SCB) != 0) |
| 1369 | /* |
| 1370 | * Ensure that we didn't put a second instance of this |
| 1371 | * SCB into the QINFIFO. |
| 1372 | */ |
| 1373 | ahd_search_qinfifo(ahd, SCB_GET_TARGET(ahd, scb), |
| 1374 | SCB_GET_CHANNEL(ahd, scb), |
| 1375 | SCB_GET_LUN(scb), SCB_GET_TAG(scb), |
| 1376 | ROLE_INITIATOR, /*status*/0, |
| 1377 | SEARCH_REMOVE); |
| 1378 | ahd_outb(ahd, SCB_CONTROL, |
| 1379 | ahd_inb_scbram(ahd, SCB_CONTROL) & ~MK_MESSAGE); |
| 1380 | break; |
| 1381 | } |
| 1382 | case TASKMGMT_FUNC_COMPLETE: |
| 1383 | { |
| 1384 | u_int scbid; |
| 1385 | struct scb *scb; |
| 1386 | |
| 1387 | scbid = ahd_get_scbptr(ahd); |
| 1388 | scb = ahd_lookup_scb(ahd, scbid); |
| 1389 | if (scb != NULL) { |
| 1390 | u_int lun; |
| 1391 | u_int tag; |
| 1392 | cam_status error; |
| 1393 | |
| 1394 | ahd_print_path(ahd, scb); |
| 1395 | printf("Task Management Func 0x%x Complete\n", |
| 1396 | scb->hscb->task_management); |
| 1397 | lun = CAM_LUN_WILDCARD; |
| 1398 | tag = SCB_LIST_NULL; |
| 1399 | |
| 1400 | switch (scb->hscb->task_management) { |
| 1401 | case SIU_TASKMGMT_ABORT_TASK: |
| 1402 | tag = SCB_GET_TAG(scb); |
| 1403 | case SIU_TASKMGMT_ABORT_TASK_SET: |
| 1404 | case SIU_TASKMGMT_CLEAR_TASK_SET: |
| 1405 | lun = scb->hscb->lun; |
| 1406 | error = CAM_REQ_ABORTED; |
| 1407 | ahd_abort_scbs(ahd, SCB_GET_TARGET(ahd, scb), |
| 1408 | 'A', lun, tag, ROLE_INITIATOR, |
| 1409 | error); |
| 1410 | break; |
| 1411 | case SIU_TASKMGMT_LUN_RESET: |
| 1412 | lun = scb->hscb->lun; |
| 1413 | case SIU_TASKMGMT_TARGET_RESET: |
| 1414 | { |
| 1415 | struct ahd_devinfo devinfo; |
| 1416 | |
| 1417 | ahd_scb_devinfo(ahd, &devinfo, scb); |
| 1418 | error = CAM_BDR_SENT; |
| 1419 | ahd_handle_devreset(ahd, &devinfo, lun, |
| 1420 | CAM_BDR_SENT, |
| 1421 | lun != CAM_LUN_WILDCARD |
| 1422 | ? "Lun Reset" |
| 1423 | : "Target Reset", |
| 1424 | /*verbose_level*/0); |
| 1425 | break; |
| 1426 | } |
| 1427 | default: |
| 1428 | panic("Unexpected TaskMgmt Func\n"); |
| 1429 | break; |
| 1430 | } |
| 1431 | } |
| 1432 | break; |
| 1433 | } |
| 1434 | case TASKMGMT_CMD_CMPLT_OKAY: |
| 1435 | { |
| 1436 | u_int scbid; |
| 1437 | struct scb *scb; |
| 1438 | |
| 1439 | /* |
| 1440 | * An ABORT TASK TMF failed to be delivered before |
| 1441 | * the targeted command completed normally. |
| 1442 | */ |
| 1443 | scbid = ahd_get_scbptr(ahd); |
| 1444 | scb = ahd_lookup_scb(ahd, scbid); |
| 1445 | if (scb != NULL) { |
| 1446 | /* |
| 1447 | * Remove the second instance of this SCB from |
| 1448 | * the QINFIFO if it is still there. |
| 1449 | */ |
| 1450 | ahd_print_path(ahd, scb); |
| 1451 | printf("SCB completes before TMF\n"); |
| 1452 | /* |
| 1453 | * Handle losing the race. Wait until any |
| 1454 | * current selection completes. We will then |
| 1455 | * set the TMF back to zero in this SCB so that |
| 1456 | * the sequencer doesn't bother to issue another |
| 1457 | * sequencer interrupt for its completion. |
| 1458 | */ |
| 1459 | while ((ahd_inb(ahd, SCSISEQ0) & ENSELO) != 0 |
| 1460 | && (ahd_inb(ahd, SSTAT0) & SELDO) == 0 |
| 1461 | && (ahd_inb(ahd, SSTAT1) & SELTO) == 0) |
| 1462 | ; |
| 1463 | ahd_outb(ahd, SCB_TASK_MANAGEMENT, 0); |
| 1464 | ahd_search_qinfifo(ahd, SCB_GET_TARGET(ahd, scb), |
| 1465 | SCB_GET_CHANNEL(ahd, scb), |
| 1466 | SCB_GET_LUN(scb), SCB_GET_TAG(scb), |
| 1467 | ROLE_INITIATOR, /*status*/0, |
| 1468 | SEARCH_REMOVE); |
| 1469 | } |
| 1470 | break; |
| 1471 | } |
| 1472 | case TRACEPOINT0: |
| 1473 | case TRACEPOINT1: |
| 1474 | case TRACEPOINT2: |
| 1475 | case TRACEPOINT3: |
| 1476 | printf("%s: Tracepoint %d\n", ahd_name(ahd), |
| 1477 | seqintcode - TRACEPOINT0); |
| 1478 | break; |
| 1479 | case NO_SEQINT: |
| 1480 | break; |
| 1481 | case SAW_HWERR: |
| 1482 | ahd_handle_hwerrint(ahd); |
| 1483 | break; |
| 1484 | default: |
| 1485 | printf("%s: Unexpected SEQINTCODE %d\n", ahd_name(ahd), |
| 1486 | seqintcode); |
| 1487 | break; |
| 1488 | } |
| 1489 | /* |
| 1490 | * The sequencer is paused immediately on |
| 1491 | * a SEQINT, so we should restart it when |
| 1492 | * we're done. |
| 1493 | */ |
| 1494 | ahd_unpause(ahd); |
| 1495 | } |
| 1496 | |
| 1497 | void |
| 1498 | ahd_handle_scsiint(struct ahd_softc *ahd, u_int intstat) |
| 1499 | { |
| 1500 | struct scb *scb; |
| 1501 | u_int status0; |
| 1502 | u_int status3; |
| 1503 | u_int status; |
| 1504 | u_int lqistat1; |
| 1505 | u_int lqostat0; |
| 1506 | u_int scbid; |
| 1507 | u_int busfreetime; |
| 1508 | |
| 1509 | ahd_update_modes(ahd); |
| 1510 | ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); |
| 1511 | |
| 1512 | status3 = ahd_inb(ahd, SSTAT3) & (NTRAMPERR|OSRAMPERR); |
| 1513 | status0 = ahd_inb(ahd, SSTAT0) & (IOERR|OVERRUN|SELDI|SELDO); |
| 1514 | status = ahd_inb(ahd, SSTAT1) & (SELTO|SCSIRSTI|BUSFREE|SCSIPERR); |
| 1515 | lqistat1 = ahd_inb(ahd, LQISTAT1); |
| 1516 | lqostat0 = ahd_inb(ahd, LQOSTAT0); |
| 1517 | busfreetime = ahd_inb(ahd, SSTAT2) & BUSFREETIME; |
Hannes Reinecke | f41b5ce | 2006-04-03 08:19:34 +0200 | [diff] [blame] | 1518 | |
| 1519 | /* |
| 1520 | * Ignore external resets after a bus reset. |
| 1521 | */ |
| 1522 | if (((status & SCSIRSTI) != 0) && (ahd->flags & AHD_BUS_RESET_ACTIVE)) |
| 1523 | return; |
| 1524 | |
| 1525 | /* |
| 1526 | * Clear bus reset flag |
| 1527 | */ |
| 1528 | ahd->flags &= ~AHD_BUS_RESET_ACTIVE; |
| 1529 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1530 | if ((status0 & (SELDI|SELDO)) != 0) { |
| 1531 | u_int simode0; |
| 1532 | |
| 1533 | ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG); |
| 1534 | simode0 = ahd_inb(ahd, SIMODE0); |
| 1535 | status0 &= simode0 & (IOERR|OVERRUN|SELDI|SELDO); |
| 1536 | ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); |
| 1537 | } |
| 1538 | scbid = ahd_get_scbptr(ahd); |
| 1539 | scb = ahd_lookup_scb(ahd, scbid); |
| 1540 | if (scb != NULL |
| 1541 | && (ahd_inb(ahd, SEQ_FLAGS) & NOT_IDENTIFIED) != 0) |
| 1542 | scb = NULL; |
| 1543 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1544 | if ((status0 & IOERR) != 0) { |
| 1545 | u_int now_lvd; |
| 1546 | |
| 1547 | now_lvd = ahd_inb(ahd, SBLKCTL) & ENAB40; |
| 1548 | printf("%s: Transceiver State Has Changed to %s mode\n", |
| 1549 | ahd_name(ahd), now_lvd ? "LVD" : "SE"); |
| 1550 | ahd_outb(ahd, CLRSINT0, CLRIOERR); |
| 1551 | /* |
| 1552 | * A change in I/O mode is equivalent to a bus reset. |
| 1553 | */ |
| 1554 | ahd_reset_channel(ahd, 'A', /*Initiate Reset*/TRUE); |
| 1555 | ahd_pause(ahd); |
| 1556 | ahd_setup_iocell_workaround(ahd); |
| 1557 | ahd_unpause(ahd); |
| 1558 | } else if ((status0 & OVERRUN) != 0) { |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 1559 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1560 | printf("%s: SCSI offset overrun detected. Resetting bus.\n", |
| 1561 | ahd_name(ahd)); |
| 1562 | ahd_reset_channel(ahd, 'A', /*Initiate Reset*/TRUE); |
| 1563 | } else if ((status & SCSIRSTI) != 0) { |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 1564 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1565 | printf("%s: Someone reset channel A\n", ahd_name(ahd)); |
| 1566 | ahd_reset_channel(ahd, 'A', /*Initiate Reset*/FALSE); |
| 1567 | } else if ((status & SCSIPERR) != 0) { |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 1568 | |
| 1569 | /* Make sure the sequencer is in a safe location. */ |
| 1570 | ahd_clear_critical_section(ahd); |
| 1571 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1572 | ahd_handle_transmission_error(ahd); |
| 1573 | } else if (lqostat0 != 0) { |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 1574 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1575 | printf("%s: lqostat0 == 0x%x!\n", ahd_name(ahd), lqostat0); |
| 1576 | ahd_outb(ahd, CLRLQOINT0, lqostat0); |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 1577 | if ((ahd->bugs & AHD_CLRLQO_AUTOCLR_BUG) != 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1578 | ahd_outb(ahd, CLRLQOINT1, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1579 | } else if ((status & SELTO) != 0) { |
| 1580 | u_int scbid; |
| 1581 | |
| 1582 | /* Stop the selection */ |
| 1583 | ahd_outb(ahd, SCSISEQ0, 0); |
| 1584 | |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 1585 | /* Make sure the sequencer is in a safe location. */ |
| 1586 | ahd_clear_critical_section(ahd); |
| 1587 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1588 | /* No more pending messages */ |
| 1589 | ahd_clear_msg_state(ahd); |
| 1590 | |
| 1591 | /* Clear interrupt state */ |
| 1592 | ahd_outb(ahd, CLRSINT1, CLRSELTIMEO|CLRBUSFREE|CLRSCSIPERR); |
| 1593 | |
| 1594 | /* |
| 1595 | * Although the driver does not care about the |
| 1596 | * 'Selection in Progress' status bit, the busy |
| 1597 | * LED does. SELINGO is only cleared by a sucessfull |
| 1598 | * selection, so we must manually clear it to insure |
| 1599 | * the LED turns off just incase no future successful |
| 1600 | * selections occur (e.g. no devices on the bus). |
| 1601 | */ |
| 1602 | ahd_outb(ahd, CLRSINT0, CLRSELINGO); |
| 1603 | |
| 1604 | scbid = ahd_inw(ahd, WAITING_TID_HEAD); |
| 1605 | scb = ahd_lookup_scb(ahd, scbid); |
| 1606 | if (scb == NULL) { |
| 1607 | printf("%s: ahd_intr - referenced scb not " |
| 1608 | "valid during SELTO scb(0x%x)\n", |
| 1609 | ahd_name(ahd), scbid); |
| 1610 | ahd_dump_card_state(ahd); |
| 1611 | } else { |
| 1612 | struct ahd_devinfo devinfo; |
| 1613 | #ifdef AHD_DEBUG |
| 1614 | if ((ahd_debug & AHD_SHOW_SELTO) != 0) { |
| 1615 | ahd_print_path(ahd, scb); |
| 1616 | printf("Saw Selection Timeout for SCB 0x%x\n", |
| 1617 | scbid); |
| 1618 | } |
| 1619 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1620 | ahd_scb_devinfo(ahd, &devinfo, scb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1621 | ahd_set_transaction_status(scb, CAM_SEL_TIMEOUT); |
| 1622 | ahd_freeze_devq(ahd, scb); |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 1623 | |
| 1624 | /* |
| 1625 | * Cancel any pending transactions on the device |
| 1626 | * now that it seems to be missing. This will |
| 1627 | * also revert us to async/narrow transfers until |
| 1628 | * we can renegotiate with the device. |
| 1629 | */ |
| 1630 | ahd_handle_devreset(ahd, &devinfo, |
| 1631 | CAM_LUN_WILDCARD, |
| 1632 | CAM_SEL_TIMEOUT, |
| 1633 | "Selection Timeout", |
| 1634 | /*verbose_level*/1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1635 | } |
| 1636 | ahd_outb(ahd, CLRINT, CLRSCSIINT); |
| 1637 | ahd_iocell_first_selection(ahd); |
| 1638 | ahd_unpause(ahd); |
| 1639 | } else if ((status0 & (SELDI|SELDO)) != 0) { |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 1640 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1641 | ahd_iocell_first_selection(ahd); |
| 1642 | ahd_unpause(ahd); |
| 1643 | } else if (status3 != 0) { |
| 1644 | printf("%s: SCSI Cell parity error SSTAT3 == 0x%x\n", |
| 1645 | ahd_name(ahd), status3); |
| 1646 | ahd_outb(ahd, CLRSINT3, status3); |
| 1647 | } else if ((lqistat1 & (LQIPHASE_LQ|LQIPHASE_NLQ)) != 0) { |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 1648 | |
| 1649 | /* Make sure the sequencer is in a safe location. */ |
| 1650 | ahd_clear_critical_section(ahd); |
| 1651 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1652 | ahd_handle_lqiphase_error(ahd, lqistat1); |
| 1653 | } else if ((lqistat1 & LQICRCI_NLQ) != 0) { |
| 1654 | /* |
| 1655 | * This status can be delayed during some |
| 1656 | * streaming operations. The SCSIPHASE |
| 1657 | * handler has already dealt with this case |
| 1658 | * so just clear the error. |
| 1659 | */ |
| 1660 | ahd_outb(ahd, CLRLQIINT1, CLRLQICRCI_NLQ); |
Hannes Reinecke | 53467e6 | 2006-01-24 10:43:26 +0100 | [diff] [blame] | 1661 | } else if ((status & BUSFREE) != 0 |
| 1662 | || (lqistat1 & LQOBUSFREE) != 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1663 | u_int lqostat1; |
| 1664 | int restart; |
| 1665 | int clear_fifo; |
| 1666 | int packetized; |
| 1667 | u_int mode; |
| 1668 | |
| 1669 | /* |
| 1670 | * Clear our selection hardware as soon as possible. |
| 1671 | * We may have an entry in the waiting Q for this target, |
| 1672 | * that is affected by this busfree and we don't want to |
| 1673 | * go about selecting the target while we handle the event. |
| 1674 | */ |
| 1675 | ahd_outb(ahd, SCSISEQ0, 0); |
| 1676 | |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 1677 | /* Make sure the sequencer is in a safe location. */ |
| 1678 | ahd_clear_critical_section(ahd); |
| 1679 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1680 | /* |
| 1681 | * Determine what we were up to at the time of |
| 1682 | * the busfree. |
| 1683 | */ |
| 1684 | mode = AHD_MODE_SCSI; |
| 1685 | busfreetime = ahd_inb(ahd, SSTAT2) & BUSFREETIME; |
| 1686 | lqostat1 = ahd_inb(ahd, LQOSTAT1); |
| 1687 | switch (busfreetime) { |
| 1688 | case BUSFREE_DFF0: |
| 1689 | case BUSFREE_DFF1: |
| 1690 | { |
| 1691 | u_int scbid; |
| 1692 | struct scb *scb; |
| 1693 | |
| 1694 | mode = busfreetime == BUSFREE_DFF0 |
| 1695 | ? AHD_MODE_DFF0 : AHD_MODE_DFF1; |
| 1696 | ahd_set_modes(ahd, mode, mode); |
| 1697 | scbid = ahd_get_scbptr(ahd); |
| 1698 | scb = ahd_lookup_scb(ahd, scbid); |
| 1699 | if (scb == NULL) { |
| 1700 | printf("%s: Invalid SCB %d in DFF%d " |
| 1701 | "during unexpected busfree\n", |
| 1702 | ahd_name(ahd), scbid, mode); |
| 1703 | packetized = 0; |
| 1704 | } else |
| 1705 | packetized = (scb->flags & SCB_PACKETIZED) != 0; |
| 1706 | clear_fifo = 1; |
| 1707 | break; |
| 1708 | } |
| 1709 | case BUSFREE_LQO: |
| 1710 | clear_fifo = 0; |
| 1711 | packetized = 1; |
| 1712 | break; |
| 1713 | default: |
| 1714 | clear_fifo = 0; |
| 1715 | packetized = (lqostat1 & LQOBUSFREE) != 0; |
| 1716 | if (!packetized |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 1717 | && ahd_inb(ahd, LASTPHASE) == P_BUSFREE |
| 1718 | && (ahd_inb(ahd, SSTAT0) & SELDI) == 0 |
| 1719 | && ((ahd_inb(ahd, SSTAT0) & SELDO) == 0 |
| 1720 | || (ahd_inb(ahd, SCSISEQ0) & ENSELO) == 0)) |
| 1721 | /* |
| 1722 | * Assume packetized if we are not |
| 1723 | * on the bus in a non-packetized |
| 1724 | * capacity and any pending selection |
| 1725 | * was a packetized selection. |
| 1726 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1727 | packetized = 1; |
| 1728 | break; |
| 1729 | } |
| 1730 | |
| 1731 | #ifdef AHD_DEBUG |
| 1732 | if ((ahd_debug & AHD_SHOW_MISC) != 0) |
| 1733 | printf("Saw Busfree. Busfreetime = 0x%x.\n", |
| 1734 | busfreetime); |
| 1735 | #endif |
| 1736 | /* |
| 1737 | * Busfrees that occur in non-packetized phases are |
| 1738 | * handled by the nonpkt_busfree handler. |
| 1739 | */ |
| 1740 | if (packetized && ahd_inb(ahd, LASTPHASE) == P_BUSFREE) { |
| 1741 | restart = ahd_handle_pkt_busfree(ahd, busfreetime); |
| 1742 | } else { |
| 1743 | packetized = 0; |
| 1744 | restart = ahd_handle_nonpkt_busfree(ahd); |
| 1745 | } |
| 1746 | /* |
| 1747 | * Clear the busfree interrupt status. The setting of |
| 1748 | * the interrupt is a pulse, so in a perfect world, we |
| 1749 | * would not need to muck with the ENBUSFREE logic. This |
| 1750 | * would ensure that if the bus moves on to another |
| 1751 | * connection, busfree protection is still in force. If |
| 1752 | * BUSFREEREV is broken, however, we must manually clear |
| 1753 | * the ENBUSFREE if the busfree occurred during a non-pack |
| 1754 | * connection so that we don't get false positives during |
| 1755 | * future, packetized, connections. |
| 1756 | */ |
| 1757 | ahd_outb(ahd, CLRSINT1, CLRBUSFREE); |
| 1758 | if (packetized == 0 |
| 1759 | && (ahd->bugs & AHD_BUSFREEREV_BUG) != 0) |
| 1760 | ahd_outb(ahd, SIMODE1, |
| 1761 | ahd_inb(ahd, SIMODE1) & ~ENBUSFREE); |
| 1762 | |
| 1763 | if (clear_fifo) |
| 1764 | ahd_clear_fifo(ahd, mode); |
| 1765 | |
| 1766 | ahd_clear_msg_state(ahd); |
| 1767 | ahd_outb(ahd, CLRINT, CLRSCSIINT); |
| 1768 | if (restart) { |
| 1769 | ahd_restart(ahd); |
| 1770 | } else { |
| 1771 | ahd_unpause(ahd); |
| 1772 | } |
| 1773 | } else { |
| 1774 | printf("%s: Missing case in ahd_handle_scsiint. status = %x\n", |
| 1775 | ahd_name(ahd), status); |
| 1776 | ahd_dump_card_state(ahd); |
| 1777 | ahd_clear_intstat(ahd); |
| 1778 | ahd_unpause(ahd); |
| 1779 | } |
| 1780 | } |
| 1781 | |
| 1782 | static void |
| 1783 | ahd_handle_transmission_error(struct ahd_softc *ahd) |
| 1784 | { |
| 1785 | struct scb *scb; |
| 1786 | u_int scbid; |
| 1787 | u_int lqistat1; |
| 1788 | u_int lqistat2; |
| 1789 | u_int msg_out; |
| 1790 | u_int curphase; |
| 1791 | u_int lastphase; |
| 1792 | u_int perrdiag; |
| 1793 | u_int cur_col; |
| 1794 | int silent; |
| 1795 | |
| 1796 | scb = NULL; |
| 1797 | ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); |
| 1798 | lqistat1 = ahd_inb(ahd, LQISTAT1) & ~(LQIPHASE_LQ|LQIPHASE_NLQ); |
| 1799 | lqistat2 = ahd_inb(ahd, LQISTAT2); |
| 1800 | if ((lqistat1 & (LQICRCI_NLQ|LQICRCI_LQ)) == 0 |
| 1801 | && (ahd->bugs & AHD_NLQICRC_DELAYED_BUG) != 0) { |
| 1802 | u_int lqistate; |
| 1803 | |
| 1804 | ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG); |
| 1805 | lqistate = ahd_inb(ahd, LQISTATE); |
| 1806 | if ((lqistate >= 0x1E && lqistate <= 0x24) |
| 1807 | || (lqistate == 0x29)) { |
| 1808 | #ifdef AHD_DEBUG |
| 1809 | if ((ahd_debug & AHD_SHOW_RECOVERY) != 0) { |
| 1810 | printf("%s: NLQCRC found via LQISTATE\n", |
| 1811 | ahd_name(ahd)); |
| 1812 | } |
| 1813 | #endif |
| 1814 | lqistat1 |= LQICRCI_NLQ; |
| 1815 | } |
| 1816 | ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); |
| 1817 | } |
| 1818 | |
| 1819 | ahd_outb(ahd, CLRLQIINT1, lqistat1); |
| 1820 | lastphase = ahd_inb(ahd, LASTPHASE); |
| 1821 | curphase = ahd_inb(ahd, SCSISIGI) & PHASE_MASK; |
| 1822 | perrdiag = ahd_inb(ahd, PERRDIAG); |
| 1823 | msg_out = MSG_INITIATOR_DET_ERR; |
| 1824 | ahd_outb(ahd, CLRSINT1, CLRSCSIPERR); |
| 1825 | |
| 1826 | /* |
| 1827 | * Try to find the SCB associated with this error. |
| 1828 | */ |
| 1829 | silent = FALSE; |
| 1830 | if (lqistat1 == 0 |
| 1831 | || (lqistat1 & LQICRCI_NLQ) != 0) { |
| 1832 | if ((lqistat1 & (LQICRCI_NLQ|LQIOVERI_NLQ)) != 0) |
| 1833 | ahd_set_active_fifo(ahd); |
| 1834 | scbid = ahd_get_scbptr(ahd); |
| 1835 | scb = ahd_lookup_scb(ahd, scbid); |
| 1836 | if (scb != NULL && SCB_IS_SILENT(scb)) |
| 1837 | silent = TRUE; |
| 1838 | } |
| 1839 | |
| 1840 | cur_col = 0; |
| 1841 | if (silent == FALSE) { |
| 1842 | printf("%s: Transmission error detected\n", ahd_name(ahd)); |
| 1843 | ahd_lqistat1_print(lqistat1, &cur_col, 50); |
| 1844 | ahd_lastphase_print(lastphase, &cur_col, 50); |
| 1845 | ahd_scsisigi_print(curphase, &cur_col, 50); |
| 1846 | ahd_perrdiag_print(perrdiag, &cur_col, 50); |
| 1847 | printf("\n"); |
| 1848 | ahd_dump_card_state(ahd); |
| 1849 | } |
| 1850 | |
| 1851 | if ((lqistat1 & (LQIOVERI_LQ|LQIOVERI_NLQ)) != 0) { |
| 1852 | if (silent == FALSE) { |
| 1853 | printf("%s: Gross protocol error during incoming " |
| 1854 | "packet. lqistat1 == 0x%x. Resetting bus.\n", |
| 1855 | ahd_name(ahd), lqistat1); |
| 1856 | } |
| 1857 | ahd_reset_channel(ahd, 'A', /*Initiate Reset*/TRUE); |
| 1858 | return; |
| 1859 | } else if ((lqistat1 & LQICRCI_LQ) != 0) { |
| 1860 | /* |
| 1861 | * A CRC error has been detected on an incoming LQ. |
| 1862 | * The bus is currently hung on the last ACK. |
| 1863 | * Hit LQIRETRY to release the last ack, and |
| 1864 | * wait for the sequencer to determine that ATNO |
| 1865 | * is asserted while in message out to take us |
| 1866 | * to our host message loop. No NONPACKREQ or |
| 1867 | * LQIPHASE type errors will occur in this |
| 1868 | * scenario. After this first LQIRETRY, the LQI |
| 1869 | * manager will be in ISELO where it will |
| 1870 | * happily sit until another packet phase begins. |
| 1871 | * Unexpected bus free detection is enabled |
| 1872 | * through any phases that occur after we release |
| 1873 | * this last ack until the LQI manager sees a |
| 1874 | * packet phase. This implies we may have to |
| 1875 | * ignore a perfectly valid "unexected busfree" |
| 1876 | * after our "initiator detected error" message is |
| 1877 | * sent. A busfree is the expected response after |
| 1878 | * we tell the target that it's L_Q was corrupted. |
| 1879 | * (SPI4R09 10.7.3.3.3) |
| 1880 | */ |
| 1881 | ahd_outb(ahd, LQCTL2, LQIRETRY); |
| 1882 | printf("LQIRetry for LQICRCI_LQ to release ACK\n"); |
| 1883 | } else if ((lqistat1 & LQICRCI_NLQ) != 0) { |
| 1884 | /* |
| 1885 | * We detected a CRC error in a NON-LQ packet. |
| 1886 | * The hardware has varying behavior in this situation |
| 1887 | * depending on whether this packet was part of a |
| 1888 | * stream or not. |
| 1889 | * |
| 1890 | * PKT by PKT mode: |
| 1891 | * The hardware has already acked the complete packet. |
| 1892 | * If the target honors our outstanding ATN condition, |
| 1893 | * we should be (or soon will be) in MSGOUT phase. |
| 1894 | * This will trigger the LQIPHASE_LQ status bit as the |
| 1895 | * hardware was expecting another LQ. Unexpected |
| 1896 | * busfree detection is enabled. Once LQIPHASE_LQ is |
| 1897 | * true (first entry into host message loop is much |
| 1898 | * the same), we must clear LQIPHASE_LQ and hit |
| 1899 | * LQIRETRY so the hardware is ready to handle |
| 1900 | * a future LQ. NONPACKREQ will not be asserted again |
| 1901 | * once we hit LQIRETRY until another packet is |
| 1902 | * processed. The target may either go busfree |
| 1903 | * or start another packet in response to our message. |
| 1904 | * |
| 1905 | * Read Streaming P0 asserted: |
| 1906 | * If we raise ATN and the target completes the entire |
| 1907 | * stream (P0 asserted during the last packet), the |
| 1908 | * hardware will ack all data and return to the ISTART |
| 1909 | * state. When the target reponds to our ATN condition, |
| 1910 | * LQIPHASE_LQ will be asserted. We should respond to |
| 1911 | * this with an LQIRETRY to prepare for any future |
| 1912 | * packets. NONPACKREQ will not be asserted again |
| 1913 | * once we hit LQIRETRY until another packet is |
| 1914 | * processed. The target may either go busfree or |
| 1915 | * start another packet in response to our message. |
| 1916 | * Busfree detection is enabled. |
| 1917 | * |
| 1918 | * Read Streaming P0 not asserted: |
| 1919 | * If we raise ATN and the target transitions to |
| 1920 | * MSGOUT in or after a packet where P0 is not |
| 1921 | * asserted, the hardware will assert LQIPHASE_NLQ. |
| 1922 | * We should respond to the LQIPHASE_NLQ with an |
| 1923 | * LQIRETRY. Should the target stay in a non-pkt |
| 1924 | * phase after we send our message, the hardware |
| 1925 | * will assert LQIPHASE_LQ. Recovery is then just as |
| 1926 | * listed above for the read streaming with P0 asserted. |
| 1927 | * Busfree detection is enabled. |
| 1928 | */ |
| 1929 | if (silent == FALSE) |
| 1930 | printf("LQICRC_NLQ\n"); |
| 1931 | if (scb == NULL) { |
| 1932 | printf("%s: No SCB valid for LQICRC_NLQ. " |
| 1933 | "Resetting bus\n", ahd_name(ahd)); |
| 1934 | ahd_reset_channel(ahd, 'A', /*Initiate Reset*/TRUE); |
| 1935 | return; |
| 1936 | } |
| 1937 | } else if ((lqistat1 & LQIBADLQI) != 0) { |
| 1938 | printf("Need to handle BADLQI!\n"); |
| 1939 | ahd_reset_channel(ahd, 'A', /*Initiate Reset*/TRUE); |
| 1940 | return; |
| 1941 | } else if ((perrdiag & (PARITYERR|PREVPHASE)) == PARITYERR) { |
| 1942 | if ((curphase & ~P_DATAIN_DT) != 0) { |
| 1943 | /* Ack the byte. So we can continue. */ |
| 1944 | if (silent == FALSE) |
| 1945 | printf("Acking %s to clear perror\n", |
| 1946 | ahd_lookup_phase_entry(curphase)->phasemsg); |
| 1947 | ahd_inb(ahd, SCSIDAT); |
| 1948 | } |
| 1949 | |
| 1950 | if (curphase == P_MESGIN) |
| 1951 | msg_out = MSG_PARITY_ERROR; |
| 1952 | } |
| 1953 | |
| 1954 | /* |
| 1955 | * We've set the hardware to assert ATN if we |
| 1956 | * get a parity error on "in" phases, so all we |
| 1957 | * need to do is stuff the message buffer with |
| 1958 | * the appropriate message. "In" phases have set |
| 1959 | * mesg_out to something other than MSG_NOP. |
| 1960 | */ |
| 1961 | ahd->send_msg_perror = msg_out; |
| 1962 | if (scb != NULL && msg_out == MSG_INITIATOR_DET_ERR) |
| 1963 | scb->flags |= SCB_TRANSMISSION_ERROR; |
| 1964 | ahd_outb(ahd, MSG_OUT, HOST_MSG); |
| 1965 | ahd_outb(ahd, CLRINT, CLRSCSIINT); |
| 1966 | ahd_unpause(ahd); |
| 1967 | } |
| 1968 | |
| 1969 | static void |
| 1970 | ahd_handle_lqiphase_error(struct ahd_softc *ahd, u_int lqistat1) |
| 1971 | { |
| 1972 | /* |
| 1973 | * Clear the sources of the interrupts. |
| 1974 | */ |
| 1975 | ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); |
| 1976 | ahd_outb(ahd, CLRLQIINT1, lqistat1); |
| 1977 | |
| 1978 | /* |
| 1979 | * If the "illegal" phase changes were in response |
| 1980 | * to our ATN to flag a CRC error, AND we ended up |
| 1981 | * on packet boundaries, clear the error, restart the |
| 1982 | * LQI manager as appropriate, and go on our merry |
| 1983 | * way toward sending the message. Otherwise, reset |
| 1984 | * the bus to clear the error. |
| 1985 | */ |
| 1986 | ahd_set_active_fifo(ahd); |
| 1987 | if ((ahd_inb(ahd, SCSISIGO) & ATNO) != 0 |
| 1988 | && (ahd_inb(ahd, MDFFSTAT) & DLZERO) != 0) { |
| 1989 | if ((lqistat1 & LQIPHASE_LQ) != 0) { |
| 1990 | printf("LQIRETRY for LQIPHASE_LQ\n"); |
| 1991 | ahd_outb(ahd, LQCTL2, LQIRETRY); |
| 1992 | } else if ((lqistat1 & LQIPHASE_NLQ) != 0) { |
| 1993 | printf("LQIRETRY for LQIPHASE_NLQ\n"); |
| 1994 | ahd_outb(ahd, LQCTL2, LQIRETRY); |
| 1995 | } else |
| 1996 | panic("ahd_handle_lqiphase_error: No phase errors\n"); |
| 1997 | ahd_dump_card_state(ahd); |
| 1998 | ahd_outb(ahd, CLRINT, CLRSCSIINT); |
| 1999 | ahd_unpause(ahd); |
| 2000 | } else { |
| 2001 | printf("Reseting Channel for LQI Phase error\n"); |
| 2002 | ahd_dump_card_state(ahd); |
| 2003 | ahd_reset_channel(ahd, 'A', /*Initiate Reset*/TRUE); |
| 2004 | } |
| 2005 | } |
| 2006 | |
| 2007 | /* |
| 2008 | * Packetized unexpected or expected busfree. |
| 2009 | * Entered in mode based on busfreetime. |
| 2010 | */ |
| 2011 | static int |
| 2012 | ahd_handle_pkt_busfree(struct ahd_softc *ahd, u_int busfreetime) |
| 2013 | { |
| 2014 | u_int lqostat1; |
| 2015 | |
| 2016 | AHD_ASSERT_MODES(ahd, ~(AHD_MODE_UNKNOWN_MSK|AHD_MODE_CFG_MSK), |
| 2017 | ~(AHD_MODE_UNKNOWN_MSK|AHD_MODE_CFG_MSK)); |
| 2018 | lqostat1 = ahd_inb(ahd, LQOSTAT1); |
| 2019 | if ((lqostat1 & LQOBUSFREE) != 0) { |
| 2020 | struct scb *scb; |
| 2021 | u_int scbid; |
| 2022 | u_int saved_scbptr; |
| 2023 | u_int waiting_h; |
| 2024 | u_int waiting_t; |
| 2025 | u_int next; |
| 2026 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2027 | /* |
| 2028 | * The LQO manager detected an unexpected busfree |
| 2029 | * either: |
| 2030 | * |
| 2031 | * 1) During an outgoing LQ. |
| 2032 | * 2) After an outgoing LQ but before the first |
| 2033 | * REQ of the command packet. |
| 2034 | * 3) During an outgoing command packet. |
| 2035 | * |
| 2036 | * In all cases, CURRSCB is pointing to the |
| 2037 | * SCB that encountered the failure. Clean |
| 2038 | * up the queue, clear SELDO and LQOBUSFREE, |
| 2039 | * and allow the sequencer to restart the select |
| 2040 | * out at its lesure. |
| 2041 | */ |
| 2042 | ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); |
| 2043 | scbid = ahd_inw(ahd, CURRSCB); |
| 2044 | scb = ahd_lookup_scb(ahd, scbid); |
| 2045 | if (scb == NULL) |
| 2046 | panic("SCB not valid during LQOBUSFREE"); |
| 2047 | /* |
| 2048 | * Clear the status. |
| 2049 | */ |
| 2050 | ahd_outb(ahd, CLRLQOINT1, CLRLQOBUSFREE); |
| 2051 | if ((ahd->bugs & AHD_CLRLQO_AUTOCLR_BUG) != 0) |
| 2052 | ahd_outb(ahd, CLRLQOINT1, 0); |
| 2053 | ahd_outb(ahd, SCSISEQ0, ahd_inb(ahd, SCSISEQ0) & ~ENSELO); |
| 2054 | ahd_flush_device_writes(ahd); |
| 2055 | ahd_outb(ahd, CLRSINT0, CLRSELDO); |
| 2056 | |
| 2057 | /* |
| 2058 | * Return the LQO manager to its idle loop. It will |
| 2059 | * not do this automatically if the busfree occurs |
| 2060 | * after the first REQ of either the LQ or command |
| 2061 | * packet or between the LQ and command packet. |
| 2062 | */ |
| 2063 | ahd_outb(ahd, LQCTL2, ahd_inb(ahd, LQCTL2) | LQOTOIDLE); |
| 2064 | |
| 2065 | /* |
| 2066 | * Update the waiting for selection queue so |
| 2067 | * we restart on the correct SCB. |
| 2068 | */ |
| 2069 | waiting_h = ahd_inw(ahd, WAITING_TID_HEAD); |
| 2070 | saved_scbptr = ahd_get_scbptr(ahd); |
| 2071 | if (waiting_h != scbid) { |
| 2072 | |
| 2073 | ahd_outw(ahd, WAITING_TID_HEAD, scbid); |
| 2074 | waiting_t = ahd_inw(ahd, WAITING_TID_TAIL); |
| 2075 | if (waiting_t == waiting_h) { |
| 2076 | ahd_outw(ahd, WAITING_TID_TAIL, scbid); |
| 2077 | next = SCB_LIST_NULL; |
| 2078 | } else { |
| 2079 | ahd_set_scbptr(ahd, waiting_h); |
| 2080 | next = ahd_inw_scbram(ahd, SCB_NEXT2); |
| 2081 | } |
| 2082 | ahd_set_scbptr(ahd, scbid); |
| 2083 | ahd_outw(ahd, SCB_NEXT2, next); |
| 2084 | } |
| 2085 | ahd_set_scbptr(ahd, saved_scbptr); |
| 2086 | if (scb->crc_retry_count < AHD_MAX_LQ_CRC_ERRORS) { |
| 2087 | if (SCB_IS_SILENT(scb) == FALSE) { |
| 2088 | ahd_print_path(ahd, scb); |
| 2089 | printf("Probable outgoing LQ CRC error. " |
| 2090 | "Retrying command\n"); |
| 2091 | } |
| 2092 | scb->crc_retry_count++; |
| 2093 | } else { |
| 2094 | ahd_set_transaction_status(scb, CAM_UNCOR_PARITY); |
| 2095 | ahd_freeze_scb(scb); |
| 2096 | ahd_freeze_devq(ahd, scb); |
| 2097 | } |
| 2098 | /* Return unpausing the sequencer. */ |
| 2099 | return (0); |
| 2100 | } else if ((ahd_inb(ahd, PERRDIAG) & PARITYERR) != 0) { |
| 2101 | /* |
| 2102 | * Ignore what are really parity errors that |
| 2103 | * occur on the last REQ of a free running |
| 2104 | * clock prior to going busfree. Some drives |
| 2105 | * do not properly active negate just before |
| 2106 | * going busfree resulting in a parity glitch. |
| 2107 | */ |
| 2108 | ahd_outb(ahd, CLRSINT1, CLRSCSIPERR|CLRBUSFREE); |
| 2109 | #ifdef AHD_DEBUG |
| 2110 | if ((ahd_debug & AHD_SHOW_MASKED_ERRORS) != 0) |
| 2111 | printf("%s: Parity on last REQ detected " |
| 2112 | "during busfree phase.\n", |
| 2113 | ahd_name(ahd)); |
| 2114 | #endif |
| 2115 | /* Return unpausing the sequencer. */ |
| 2116 | return (0); |
| 2117 | } |
| 2118 | if (ahd->src_mode != AHD_MODE_SCSI) { |
| 2119 | u_int scbid; |
| 2120 | struct scb *scb; |
| 2121 | |
| 2122 | scbid = ahd_get_scbptr(ahd); |
| 2123 | scb = ahd_lookup_scb(ahd, scbid); |
| 2124 | ahd_print_path(ahd, scb); |
| 2125 | printf("Unexpected PKT busfree condition\n"); |
| 2126 | ahd_dump_card_state(ahd); |
| 2127 | ahd_abort_scbs(ahd, SCB_GET_TARGET(ahd, scb), 'A', |
| 2128 | SCB_GET_LUN(scb), SCB_GET_TAG(scb), |
| 2129 | ROLE_INITIATOR, CAM_UNEXP_BUSFREE); |
| 2130 | |
| 2131 | /* Return restarting the sequencer. */ |
| 2132 | return (1); |
| 2133 | } |
| 2134 | printf("%s: Unexpected PKT busfree condition\n", ahd_name(ahd)); |
| 2135 | ahd_dump_card_state(ahd); |
| 2136 | /* Restart the sequencer. */ |
| 2137 | return (1); |
| 2138 | } |
| 2139 | |
| 2140 | /* |
| 2141 | * Non-packetized unexpected or expected busfree. |
| 2142 | */ |
| 2143 | static int |
| 2144 | ahd_handle_nonpkt_busfree(struct ahd_softc *ahd) |
| 2145 | { |
| 2146 | struct ahd_devinfo devinfo; |
| 2147 | struct scb *scb; |
| 2148 | u_int lastphase; |
| 2149 | u_int saved_scsiid; |
| 2150 | u_int saved_lun; |
| 2151 | u_int target; |
| 2152 | u_int initiator_role_id; |
| 2153 | u_int scbid; |
| 2154 | u_int ppr_busfree; |
| 2155 | int printerror; |
| 2156 | |
| 2157 | /* |
| 2158 | * Look at what phase we were last in. If its message out, |
| 2159 | * chances are pretty good that the busfree was in response |
| 2160 | * to one of our abort requests. |
| 2161 | */ |
| 2162 | lastphase = ahd_inb(ahd, LASTPHASE); |
| 2163 | saved_scsiid = ahd_inb(ahd, SAVED_SCSIID); |
| 2164 | saved_lun = ahd_inb(ahd, SAVED_LUN); |
| 2165 | target = SCSIID_TARGET(ahd, saved_scsiid); |
| 2166 | initiator_role_id = SCSIID_OUR_ID(saved_scsiid); |
| 2167 | ahd_compile_devinfo(&devinfo, initiator_role_id, |
| 2168 | target, saved_lun, 'A', ROLE_INITIATOR); |
| 2169 | printerror = 1; |
| 2170 | |
| 2171 | scbid = ahd_get_scbptr(ahd); |
| 2172 | scb = ahd_lookup_scb(ahd, scbid); |
| 2173 | if (scb != NULL |
| 2174 | && (ahd_inb(ahd, SEQ_FLAGS) & NOT_IDENTIFIED) != 0) |
| 2175 | scb = NULL; |
| 2176 | |
| 2177 | ppr_busfree = (ahd->msg_flags & MSG_FLAG_EXPECT_PPR_BUSFREE) != 0; |
| 2178 | if (lastphase == P_MESGOUT) { |
| 2179 | u_int tag; |
| 2180 | |
| 2181 | tag = SCB_LIST_NULL; |
| 2182 | if (ahd_sent_msg(ahd, AHDMSG_1B, MSG_ABORT_TAG, TRUE) |
| 2183 | || ahd_sent_msg(ahd, AHDMSG_1B, MSG_ABORT, TRUE)) { |
| 2184 | int found; |
| 2185 | int sent_msg; |
| 2186 | |
| 2187 | if (scb == NULL) { |
| 2188 | ahd_print_devinfo(ahd, &devinfo); |
| 2189 | printf("Abort for unidentified " |
| 2190 | "connection completed.\n"); |
| 2191 | /* restart the sequencer. */ |
| 2192 | return (1); |
| 2193 | } |
| 2194 | sent_msg = ahd->msgout_buf[ahd->msgout_index - 1]; |
| 2195 | ahd_print_path(ahd, scb); |
| 2196 | printf("SCB %d - Abort%s Completed.\n", |
| 2197 | SCB_GET_TAG(scb), |
| 2198 | sent_msg == MSG_ABORT_TAG ? "" : " Tag"); |
| 2199 | |
| 2200 | if (sent_msg == MSG_ABORT_TAG) |
| 2201 | tag = SCB_GET_TAG(scb); |
| 2202 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2203 | found = ahd_abort_scbs(ahd, target, 'A', saved_lun, |
| 2204 | tag, ROLE_INITIATOR, |
| 2205 | CAM_REQ_ABORTED); |
| 2206 | printf("found == 0x%x\n", found); |
| 2207 | printerror = 0; |
| 2208 | } else if (ahd_sent_msg(ahd, AHDMSG_1B, |
| 2209 | MSG_BUS_DEV_RESET, TRUE)) { |
| 2210 | #ifdef __FreeBSD__ |
| 2211 | /* |
| 2212 | * Don't mark the user's request for this BDR |
| 2213 | * as completing with CAM_BDR_SENT. CAM3 |
| 2214 | * specifies CAM_REQ_CMP. |
| 2215 | */ |
| 2216 | if (scb != NULL |
| 2217 | && scb->io_ctx->ccb_h.func_code== XPT_RESET_DEV |
| 2218 | && ahd_match_scb(ahd, scb, target, 'A', |
| 2219 | CAM_LUN_WILDCARD, SCB_LIST_NULL, |
| 2220 | ROLE_INITIATOR)) |
| 2221 | ahd_set_transaction_status(scb, CAM_REQ_CMP); |
| 2222 | #endif |
| 2223 | ahd_handle_devreset(ahd, &devinfo, CAM_LUN_WILDCARD, |
| 2224 | CAM_BDR_SENT, "Bus Device Reset", |
| 2225 | /*verbose_level*/0); |
| 2226 | printerror = 0; |
| 2227 | } else if (ahd_sent_msg(ahd, AHDMSG_EXT, MSG_EXT_PPR, FALSE) |
| 2228 | && ppr_busfree == 0) { |
| 2229 | struct ahd_initiator_tinfo *tinfo; |
| 2230 | struct ahd_tmode_tstate *tstate; |
| 2231 | |
| 2232 | /* |
Hannes Reinecke | 53467e6 | 2006-01-24 10:43:26 +0100 | [diff] [blame] | 2233 | * PPR Rejected. |
| 2234 | * |
| 2235 | * If the previous negotiation was packetized, |
| 2236 | * this could be because the device has been |
| 2237 | * reset without our knowledge. Force our |
| 2238 | * current negotiation to async and retry the |
| 2239 | * negotiation. Otherwise retry the command |
| 2240 | * with non-ppr negotiation. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2241 | */ |
| 2242 | #ifdef AHD_DEBUG |
| 2243 | if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) |
| 2244 | printf("PPR negotiation rejected busfree.\n"); |
| 2245 | #endif |
| 2246 | tinfo = ahd_fetch_transinfo(ahd, devinfo.channel, |
| 2247 | devinfo.our_scsiid, |
| 2248 | devinfo.target, &tstate); |
Hannes Reinecke | 53467e6 | 2006-01-24 10:43:26 +0100 | [diff] [blame] | 2249 | if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ)!=0) { |
| 2250 | ahd_set_width(ahd, &devinfo, |
| 2251 | MSG_EXT_WDTR_BUS_8_BIT, |
| 2252 | AHD_TRANS_CUR, |
| 2253 | /*paused*/TRUE); |
| 2254 | ahd_set_syncrate(ahd, &devinfo, |
| 2255 | /*period*/0, /*offset*/0, |
| 2256 | /*ppr_options*/0, |
| 2257 | AHD_TRANS_CUR, |
| 2258 | /*paused*/TRUE); |
| 2259 | /* |
| 2260 | * The expect PPR busfree handler below |
| 2261 | * will effect the retry and necessary |
| 2262 | * abort. |
| 2263 | */ |
| 2264 | } else { |
| 2265 | tinfo->curr.transport_version = 2; |
| 2266 | tinfo->goal.transport_version = 2; |
| 2267 | tinfo->goal.ppr_options = 0; |
| 2268 | /* |
| 2269 | * Remove any SCBs in the waiting for selection |
| 2270 | * queue that may also be for this target so |
| 2271 | * that command ordering is preserved. |
| 2272 | */ |
| 2273 | ahd_freeze_devq(ahd, scb); |
| 2274 | ahd_qinfifo_requeue_tail(ahd, scb); |
| 2275 | printerror = 0; |
| 2276 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2277 | } else if (ahd_sent_msg(ahd, AHDMSG_EXT, MSG_EXT_WDTR, FALSE) |
| 2278 | && ppr_busfree == 0) { |
| 2279 | /* |
| 2280 | * Negotiation Rejected. Go-narrow and |
| 2281 | * retry command. |
| 2282 | */ |
| 2283 | #ifdef AHD_DEBUG |
| 2284 | if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) |
| 2285 | printf("WDTR negotiation rejected busfree.\n"); |
| 2286 | #endif |
| 2287 | ahd_set_width(ahd, &devinfo, |
| 2288 | MSG_EXT_WDTR_BUS_8_BIT, |
| 2289 | AHD_TRANS_CUR|AHD_TRANS_GOAL, |
| 2290 | /*paused*/TRUE); |
Hannes Reinecke | 53467e6 | 2006-01-24 10:43:26 +0100 | [diff] [blame] | 2291 | /* |
| 2292 | * Remove any SCBs in the waiting for selection |
| 2293 | * queue that may also be for this target so that |
| 2294 | * command ordering is preserved. |
| 2295 | */ |
| 2296 | ahd_freeze_devq(ahd, scb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2297 | ahd_qinfifo_requeue_tail(ahd, scb); |
| 2298 | printerror = 0; |
| 2299 | } else if (ahd_sent_msg(ahd, AHDMSG_EXT, MSG_EXT_SDTR, FALSE) |
| 2300 | && ppr_busfree == 0) { |
| 2301 | /* |
| 2302 | * Negotiation Rejected. Go-async and |
| 2303 | * retry command. |
| 2304 | */ |
| 2305 | #ifdef AHD_DEBUG |
| 2306 | if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) |
| 2307 | printf("SDTR negotiation rejected busfree.\n"); |
| 2308 | #endif |
| 2309 | ahd_set_syncrate(ahd, &devinfo, |
| 2310 | /*period*/0, /*offset*/0, |
| 2311 | /*ppr_options*/0, |
| 2312 | AHD_TRANS_CUR|AHD_TRANS_GOAL, |
| 2313 | /*paused*/TRUE); |
Hannes Reinecke | 53467e6 | 2006-01-24 10:43:26 +0100 | [diff] [blame] | 2314 | /* |
| 2315 | * Remove any SCBs in the waiting for selection |
| 2316 | * queue that may also be for this target so that |
| 2317 | * command ordering is preserved. |
| 2318 | */ |
| 2319 | ahd_freeze_devq(ahd, scb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2320 | ahd_qinfifo_requeue_tail(ahd, scb); |
| 2321 | printerror = 0; |
| 2322 | } else if ((ahd->msg_flags & MSG_FLAG_EXPECT_IDE_BUSFREE) != 0 |
| 2323 | && ahd_sent_msg(ahd, AHDMSG_1B, |
| 2324 | MSG_INITIATOR_DET_ERR, TRUE)) { |
| 2325 | |
| 2326 | #ifdef AHD_DEBUG |
| 2327 | if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) |
| 2328 | printf("Expected IDE Busfree\n"); |
| 2329 | #endif |
| 2330 | printerror = 0; |
| 2331 | } else if ((ahd->msg_flags & MSG_FLAG_EXPECT_QASREJ_BUSFREE) |
| 2332 | && ahd_sent_msg(ahd, AHDMSG_1B, |
| 2333 | MSG_MESSAGE_REJECT, TRUE)) { |
| 2334 | |
| 2335 | #ifdef AHD_DEBUG |
| 2336 | if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) |
| 2337 | printf("Expected QAS Reject Busfree\n"); |
| 2338 | #endif |
| 2339 | printerror = 0; |
| 2340 | } |
| 2341 | } |
| 2342 | |
| 2343 | /* |
| 2344 | * The busfree required flag is honored at the end of |
| 2345 | * the message phases. We check it last in case we |
| 2346 | * had to send some other message that caused a busfree. |
| 2347 | */ |
| 2348 | if (printerror != 0 |
| 2349 | && (lastphase == P_MESGIN || lastphase == P_MESGOUT) |
| 2350 | && ((ahd->msg_flags & MSG_FLAG_EXPECT_PPR_BUSFREE) != 0)) { |
| 2351 | |
| 2352 | ahd_freeze_devq(ahd, scb); |
| 2353 | ahd_set_transaction_status(scb, CAM_REQUEUE_REQ); |
| 2354 | ahd_freeze_scb(scb); |
| 2355 | if ((ahd->msg_flags & MSG_FLAG_IU_REQ_CHANGED) != 0) { |
| 2356 | ahd_abort_scbs(ahd, SCB_GET_TARGET(ahd, scb), |
| 2357 | SCB_GET_CHANNEL(ahd, scb), |
| 2358 | SCB_GET_LUN(scb), SCB_LIST_NULL, |
| 2359 | ROLE_INITIATOR, CAM_REQ_ABORTED); |
| 2360 | } else { |
| 2361 | #ifdef AHD_DEBUG |
| 2362 | if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) |
| 2363 | printf("PPR Negotiation Busfree.\n"); |
| 2364 | #endif |
| 2365 | ahd_done(ahd, scb); |
| 2366 | } |
| 2367 | printerror = 0; |
| 2368 | } |
| 2369 | if (printerror != 0) { |
| 2370 | int aborted; |
| 2371 | |
| 2372 | aborted = 0; |
| 2373 | if (scb != NULL) { |
| 2374 | u_int tag; |
| 2375 | |
| 2376 | if ((scb->hscb->control & TAG_ENB) != 0) |
| 2377 | tag = SCB_GET_TAG(scb); |
| 2378 | else |
| 2379 | tag = SCB_LIST_NULL; |
| 2380 | ahd_print_path(ahd, scb); |
| 2381 | aborted = ahd_abort_scbs(ahd, target, 'A', |
| 2382 | SCB_GET_LUN(scb), tag, |
| 2383 | ROLE_INITIATOR, |
| 2384 | CAM_UNEXP_BUSFREE); |
| 2385 | } else { |
| 2386 | /* |
| 2387 | * We had not fully identified this connection, |
| 2388 | * so we cannot abort anything. |
| 2389 | */ |
| 2390 | printf("%s: ", ahd_name(ahd)); |
| 2391 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2392 | printf("Unexpected busfree %s, %d SCBs aborted, " |
| 2393 | "PRGMCNT == 0x%x\n", |
| 2394 | ahd_lookup_phase_entry(lastphase)->phasemsg, |
| 2395 | aborted, |
Hannes Reinecke | ba62cd2 | 2006-01-12 12:07:02 +0100 | [diff] [blame] | 2396 | ahd_inw(ahd, PRGMCNT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2397 | ahd_dump_card_state(ahd); |
Hannes Reinecke | 53467e6 | 2006-01-24 10:43:26 +0100 | [diff] [blame] | 2398 | if (lastphase != P_BUSFREE) |
| 2399 | ahd_force_renegotiation(ahd, &devinfo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2400 | } |
| 2401 | /* Always restart the sequencer. */ |
| 2402 | return (1); |
| 2403 | } |
| 2404 | |
| 2405 | static void |
| 2406 | ahd_handle_proto_violation(struct ahd_softc *ahd) |
| 2407 | { |
| 2408 | struct ahd_devinfo devinfo; |
| 2409 | struct scb *scb; |
| 2410 | u_int scbid; |
| 2411 | u_int seq_flags; |
| 2412 | u_int curphase; |
| 2413 | u_int lastphase; |
| 2414 | int found; |
| 2415 | |
| 2416 | ahd_fetch_devinfo(ahd, &devinfo); |
| 2417 | scbid = ahd_get_scbptr(ahd); |
| 2418 | scb = ahd_lookup_scb(ahd, scbid); |
| 2419 | seq_flags = ahd_inb(ahd, SEQ_FLAGS); |
| 2420 | curphase = ahd_inb(ahd, SCSISIGI) & PHASE_MASK; |
| 2421 | lastphase = ahd_inb(ahd, LASTPHASE); |
| 2422 | if ((seq_flags & NOT_IDENTIFIED) != 0) { |
| 2423 | |
| 2424 | /* |
| 2425 | * The reconnecting target either did not send an |
| 2426 | * identify message, or did, but we didn't find an SCB |
| 2427 | * to match. |
| 2428 | */ |
| 2429 | ahd_print_devinfo(ahd, &devinfo); |
| 2430 | printf("Target did not send an IDENTIFY message. " |
| 2431 | "LASTPHASE = 0x%x.\n", lastphase); |
| 2432 | scb = NULL; |
| 2433 | } else if (scb == NULL) { |
| 2434 | /* |
| 2435 | * We don't seem to have an SCB active for this |
| 2436 | * transaction. Print an error and reset the bus. |
| 2437 | */ |
| 2438 | ahd_print_devinfo(ahd, &devinfo); |
| 2439 | printf("No SCB found during protocol violation\n"); |
| 2440 | goto proto_violation_reset; |
| 2441 | } else { |
| 2442 | ahd_set_transaction_status(scb, CAM_SEQUENCE_FAIL); |
| 2443 | if ((seq_flags & NO_CDB_SENT) != 0) { |
| 2444 | ahd_print_path(ahd, scb); |
| 2445 | printf("No or incomplete CDB sent to device.\n"); |
| 2446 | } else if ((ahd_inb_scbram(ahd, SCB_CONTROL) |
| 2447 | & STATUS_RCVD) == 0) { |
| 2448 | /* |
| 2449 | * The target never bothered to provide status to |
| 2450 | * us prior to completing the command. Since we don't |
| 2451 | * know the disposition of this command, we must attempt |
| 2452 | * to abort it. Assert ATN and prepare to send an abort |
| 2453 | * message. |
| 2454 | */ |
| 2455 | ahd_print_path(ahd, scb); |
| 2456 | printf("Completed command without status.\n"); |
| 2457 | } else { |
| 2458 | ahd_print_path(ahd, scb); |
| 2459 | printf("Unknown protocol violation.\n"); |
| 2460 | ahd_dump_card_state(ahd); |
| 2461 | } |
| 2462 | } |
| 2463 | if ((lastphase & ~P_DATAIN_DT) == 0 |
| 2464 | || lastphase == P_COMMAND) { |
| 2465 | proto_violation_reset: |
| 2466 | /* |
| 2467 | * Target either went directly to data |
| 2468 | * phase or didn't respond to our ATN. |
| 2469 | * The only safe thing to do is to blow |
| 2470 | * it away with a bus reset. |
| 2471 | */ |
| 2472 | found = ahd_reset_channel(ahd, 'A', TRUE); |
| 2473 | printf("%s: Issued Channel %c Bus Reset. " |
| 2474 | "%d SCBs aborted\n", ahd_name(ahd), 'A', found); |
| 2475 | } else { |
| 2476 | /* |
| 2477 | * Leave the selection hardware off in case |
| 2478 | * this abort attempt will affect yet to |
| 2479 | * be sent commands. |
| 2480 | */ |
| 2481 | ahd_outb(ahd, SCSISEQ0, |
| 2482 | ahd_inb(ahd, SCSISEQ0) & ~ENSELO); |
| 2483 | ahd_assert_atn(ahd); |
| 2484 | ahd_outb(ahd, MSG_OUT, HOST_MSG); |
| 2485 | if (scb == NULL) { |
| 2486 | ahd_print_devinfo(ahd, &devinfo); |
| 2487 | ahd->msgout_buf[0] = MSG_ABORT_TASK; |
| 2488 | ahd->msgout_len = 1; |
| 2489 | ahd->msgout_index = 0; |
| 2490 | ahd->msg_type = MSG_TYPE_INITIATOR_MSGOUT; |
| 2491 | } else { |
| 2492 | ahd_print_path(ahd, scb); |
| 2493 | scb->flags |= SCB_ABORT; |
| 2494 | } |
| 2495 | printf("Protocol violation %s. Attempting to abort.\n", |
| 2496 | ahd_lookup_phase_entry(curphase)->phasemsg); |
| 2497 | } |
| 2498 | } |
| 2499 | |
| 2500 | /* |
| 2501 | * Force renegotiation to occur the next time we initiate |
| 2502 | * a command to the current device. |
| 2503 | */ |
| 2504 | static void |
| 2505 | ahd_force_renegotiation(struct ahd_softc *ahd, struct ahd_devinfo *devinfo) |
| 2506 | { |
| 2507 | struct ahd_initiator_tinfo *targ_info; |
| 2508 | struct ahd_tmode_tstate *tstate; |
| 2509 | |
| 2510 | #ifdef AHD_DEBUG |
| 2511 | if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) { |
| 2512 | ahd_print_devinfo(ahd, devinfo); |
| 2513 | printf("Forcing renegotiation\n"); |
| 2514 | } |
| 2515 | #endif |
| 2516 | targ_info = ahd_fetch_transinfo(ahd, |
| 2517 | devinfo->channel, |
| 2518 | devinfo->our_scsiid, |
| 2519 | devinfo->target, |
| 2520 | &tstate); |
| 2521 | ahd_update_neg_request(ahd, devinfo, tstate, |
| 2522 | targ_info, AHD_NEG_IF_NON_ASYNC); |
| 2523 | } |
| 2524 | |
| 2525 | #define AHD_MAX_STEPS 2000 |
| 2526 | void |
| 2527 | ahd_clear_critical_section(struct ahd_softc *ahd) |
| 2528 | { |
| 2529 | ahd_mode_state saved_modes; |
| 2530 | int stepping; |
| 2531 | int steps; |
| 2532 | int first_instr; |
| 2533 | u_int simode0; |
| 2534 | u_int simode1; |
| 2535 | u_int simode3; |
| 2536 | u_int lqimode0; |
| 2537 | u_int lqimode1; |
| 2538 | u_int lqomode0; |
| 2539 | u_int lqomode1; |
| 2540 | |
| 2541 | if (ahd->num_critical_sections == 0) |
| 2542 | return; |
| 2543 | |
| 2544 | stepping = FALSE; |
| 2545 | steps = 0; |
| 2546 | first_instr = 0; |
| 2547 | simode0 = 0; |
| 2548 | simode1 = 0; |
| 2549 | simode3 = 0; |
| 2550 | lqimode0 = 0; |
| 2551 | lqimode1 = 0; |
| 2552 | lqomode0 = 0; |
| 2553 | lqomode1 = 0; |
| 2554 | saved_modes = ahd_save_modes(ahd); |
| 2555 | for (;;) { |
| 2556 | struct cs *cs; |
| 2557 | u_int seqaddr; |
| 2558 | u_int i; |
| 2559 | |
| 2560 | ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); |
Hannes Reinecke | ba62cd2 | 2006-01-12 12:07:02 +0100 | [diff] [blame] | 2561 | seqaddr = ahd_inw(ahd, CURADDR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2562 | |
| 2563 | cs = ahd->critical_sections; |
| 2564 | for (i = 0; i < ahd->num_critical_sections; i++, cs++) { |
| 2565 | |
| 2566 | if (cs->begin < seqaddr && cs->end >= seqaddr) |
| 2567 | break; |
| 2568 | } |
| 2569 | |
| 2570 | if (i == ahd->num_critical_sections) |
| 2571 | break; |
| 2572 | |
| 2573 | if (steps > AHD_MAX_STEPS) { |
| 2574 | printf("%s: Infinite loop in critical section\n" |
| 2575 | "%s: First Instruction 0x%x now 0x%x\n", |
| 2576 | ahd_name(ahd), ahd_name(ahd), first_instr, |
| 2577 | seqaddr); |
| 2578 | ahd_dump_card_state(ahd); |
| 2579 | panic("critical section loop"); |
| 2580 | } |
| 2581 | |
| 2582 | steps++; |
| 2583 | #ifdef AHD_DEBUG |
| 2584 | if ((ahd_debug & AHD_SHOW_MISC) != 0) |
| 2585 | printf("%s: Single stepping at 0x%x\n", ahd_name(ahd), |
| 2586 | seqaddr); |
| 2587 | #endif |
| 2588 | if (stepping == FALSE) { |
| 2589 | |
| 2590 | first_instr = seqaddr; |
| 2591 | ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG); |
| 2592 | simode0 = ahd_inb(ahd, SIMODE0); |
| 2593 | simode3 = ahd_inb(ahd, SIMODE3); |
| 2594 | lqimode0 = ahd_inb(ahd, LQIMODE0); |
| 2595 | lqimode1 = ahd_inb(ahd, LQIMODE1); |
| 2596 | lqomode0 = ahd_inb(ahd, LQOMODE0); |
| 2597 | lqomode1 = ahd_inb(ahd, LQOMODE1); |
| 2598 | ahd_outb(ahd, SIMODE0, 0); |
| 2599 | ahd_outb(ahd, SIMODE3, 0); |
| 2600 | ahd_outb(ahd, LQIMODE0, 0); |
| 2601 | ahd_outb(ahd, LQIMODE1, 0); |
| 2602 | ahd_outb(ahd, LQOMODE0, 0); |
| 2603 | ahd_outb(ahd, LQOMODE1, 0); |
| 2604 | ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); |
| 2605 | simode1 = ahd_inb(ahd, SIMODE1); |
| 2606 | /* |
| 2607 | * We don't clear ENBUSFREE. Unfortunately |
| 2608 | * we cannot re-enable busfree detection within |
| 2609 | * the current connection, so we must leave it |
| 2610 | * on while single stepping. |
| 2611 | */ |
| 2612 | ahd_outb(ahd, SIMODE1, simode1 & ENBUSFREE); |
| 2613 | ahd_outb(ahd, SEQCTL0, ahd_inb(ahd, SEQCTL0) | STEP); |
| 2614 | stepping = TRUE; |
| 2615 | } |
| 2616 | ahd_outb(ahd, CLRSINT1, CLRBUSFREE); |
| 2617 | ahd_outb(ahd, CLRINT, CLRSCSIINT); |
| 2618 | ahd_set_modes(ahd, ahd->saved_src_mode, ahd->saved_dst_mode); |
| 2619 | ahd_outb(ahd, HCNTRL, ahd->unpause); |
| 2620 | while (!ahd_is_paused(ahd)) |
| 2621 | ahd_delay(200); |
| 2622 | ahd_update_modes(ahd); |
| 2623 | } |
| 2624 | if (stepping) { |
| 2625 | ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG); |
| 2626 | ahd_outb(ahd, SIMODE0, simode0); |
| 2627 | ahd_outb(ahd, SIMODE3, simode3); |
| 2628 | ahd_outb(ahd, LQIMODE0, lqimode0); |
| 2629 | ahd_outb(ahd, LQIMODE1, lqimode1); |
| 2630 | ahd_outb(ahd, LQOMODE0, lqomode0); |
| 2631 | ahd_outb(ahd, LQOMODE1, lqomode1); |
| 2632 | ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); |
| 2633 | ahd_outb(ahd, SEQCTL0, ahd_inb(ahd, SEQCTL0) & ~STEP); |
| 2634 | ahd_outb(ahd, SIMODE1, simode1); |
| 2635 | /* |
| 2636 | * SCSIINT seems to glitch occassionally when |
| 2637 | * the interrupt masks are restored. Clear SCSIINT |
| 2638 | * one more time so that only persistent errors |
| 2639 | * are seen as a real interrupt. |
| 2640 | */ |
| 2641 | ahd_outb(ahd, CLRINT, CLRSCSIINT); |
| 2642 | } |
| 2643 | ahd_restore_modes(ahd, saved_modes); |
| 2644 | } |
| 2645 | |
| 2646 | /* |
| 2647 | * Clear any pending interrupt status. |
| 2648 | */ |
| 2649 | void |
| 2650 | ahd_clear_intstat(struct ahd_softc *ahd) |
| 2651 | { |
| 2652 | AHD_ASSERT_MODES(ahd, ~(AHD_MODE_UNKNOWN_MSK|AHD_MODE_CFG_MSK), |
| 2653 | ~(AHD_MODE_UNKNOWN_MSK|AHD_MODE_CFG_MSK)); |
| 2654 | /* Clear any interrupt conditions this may have caused */ |
| 2655 | ahd_outb(ahd, CLRLQIINT0, CLRLQIATNQAS|CLRLQICRCT1|CLRLQICRCT2 |
| 2656 | |CLRLQIBADLQT|CLRLQIATNLQ|CLRLQIATNCMD); |
| 2657 | ahd_outb(ahd, CLRLQIINT1, CLRLQIPHASE_LQ|CLRLQIPHASE_NLQ|CLRLIQABORT |
| 2658 | |CLRLQICRCI_LQ|CLRLQICRCI_NLQ|CLRLQIBADLQI |
| 2659 | |CLRLQIOVERI_LQ|CLRLQIOVERI_NLQ|CLRNONPACKREQ); |
| 2660 | ahd_outb(ahd, CLRLQOINT0, CLRLQOTARGSCBPERR|CLRLQOSTOPT2|CLRLQOATNLQ |
| 2661 | |CLRLQOATNPKT|CLRLQOTCRC); |
| 2662 | ahd_outb(ahd, CLRLQOINT1, CLRLQOINITSCBPERR|CLRLQOSTOPI2|CLRLQOBADQAS |
| 2663 | |CLRLQOBUSFREE|CLRLQOPHACHGINPKT); |
| 2664 | if ((ahd->bugs & AHD_CLRLQO_AUTOCLR_BUG) != 0) { |
| 2665 | ahd_outb(ahd, CLRLQOINT0, 0); |
| 2666 | ahd_outb(ahd, CLRLQOINT1, 0); |
| 2667 | } |
| 2668 | ahd_outb(ahd, CLRSINT3, CLRNTRAMPERR|CLROSRAMPERR); |
| 2669 | ahd_outb(ahd, CLRSINT1, CLRSELTIMEO|CLRATNO|CLRSCSIRSTI |
| 2670 | |CLRBUSFREE|CLRSCSIPERR|CLRREQINIT); |
| 2671 | ahd_outb(ahd, CLRSINT0, CLRSELDO|CLRSELDI|CLRSELINGO |
| 2672 | |CLRIOERR|CLROVERRUN); |
| 2673 | ahd_outb(ahd, CLRINT, CLRSCSIINT); |
| 2674 | } |
| 2675 | |
| 2676 | /**************************** Debugging Routines ******************************/ |
| 2677 | #ifdef AHD_DEBUG |
| 2678 | uint32_t ahd_debug = AHD_DEBUG_OPTS; |
| 2679 | #endif |
| 2680 | void |
| 2681 | ahd_print_scb(struct scb *scb) |
| 2682 | { |
| 2683 | struct hardware_scb *hscb; |
| 2684 | int i; |
| 2685 | |
| 2686 | hscb = scb->hscb; |
| 2687 | printf("scb:%p control:0x%x scsiid:0x%x lun:%d cdb_len:%d\n", |
| 2688 | (void *)scb, |
| 2689 | hscb->control, |
| 2690 | hscb->scsiid, |
| 2691 | hscb->lun, |
| 2692 | hscb->cdb_len); |
| 2693 | printf("Shared Data: "); |
| 2694 | for (i = 0; i < sizeof(hscb->shared_data.idata.cdb); i++) |
| 2695 | printf("%#02x", hscb->shared_data.idata.cdb[i]); |
| 2696 | printf(" dataptr:%#x%x datacnt:%#x sgptr:%#x tag:%#x\n", |
| 2697 | (uint32_t)((ahd_le64toh(hscb->dataptr) >> 32) & 0xFFFFFFFF), |
| 2698 | (uint32_t)(ahd_le64toh(hscb->dataptr) & 0xFFFFFFFF), |
| 2699 | ahd_le32toh(hscb->datacnt), |
| 2700 | ahd_le32toh(hscb->sgptr), |
| 2701 | SCB_GET_TAG(scb)); |
| 2702 | ahd_dump_sglist(scb); |
| 2703 | } |
| 2704 | |
| 2705 | void |
| 2706 | ahd_dump_sglist(struct scb *scb) |
| 2707 | { |
| 2708 | int i; |
| 2709 | |
| 2710 | if (scb->sg_count > 0) { |
| 2711 | if ((scb->ahd_softc->flags & AHD_64BIT_ADDRESSING) != 0) { |
| 2712 | struct ahd_dma64_seg *sg_list; |
| 2713 | |
| 2714 | sg_list = (struct ahd_dma64_seg*)scb->sg_list; |
| 2715 | for (i = 0; i < scb->sg_count; i++) { |
| 2716 | uint64_t addr; |
| 2717 | uint32_t len; |
| 2718 | |
| 2719 | addr = ahd_le64toh(sg_list[i].addr); |
| 2720 | len = ahd_le32toh(sg_list[i].len); |
| 2721 | printf("sg[%d] - Addr 0x%x%x : Length %d%s\n", |
| 2722 | i, |
| 2723 | (uint32_t)((addr >> 32) & 0xFFFFFFFF), |
| 2724 | (uint32_t)(addr & 0xFFFFFFFF), |
| 2725 | sg_list[i].len & AHD_SG_LEN_MASK, |
| 2726 | (sg_list[i].len & AHD_DMA_LAST_SEG) |
| 2727 | ? " Last" : ""); |
| 2728 | } |
| 2729 | } else { |
| 2730 | struct ahd_dma_seg *sg_list; |
| 2731 | |
| 2732 | sg_list = (struct ahd_dma_seg*)scb->sg_list; |
| 2733 | for (i = 0; i < scb->sg_count; i++) { |
| 2734 | uint32_t len; |
| 2735 | |
| 2736 | len = ahd_le32toh(sg_list[i].len); |
| 2737 | printf("sg[%d] - Addr 0x%x%x : Length %d%s\n", |
| 2738 | i, |
| 2739 | (len & AHD_SG_HIGH_ADDR_MASK) >> 24, |
| 2740 | ahd_le32toh(sg_list[i].addr), |
| 2741 | len & AHD_SG_LEN_MASK, |
| 2742 | len & AHD_DMA_LAST_SEG ? " Last" : ""); |
| 2743 | } |
| 2744 | } |
| 2745 | } |
| 2746 | } |
| 2747 | |
| 2748 | /************************* Transfer Negotiation *******************************/ |
| 2749 | /* |
| 2750 | * Allocate per target mode instance (ID we respond to as a target) |
| 2751 | * transfer negotiation data structures. |
| 2752 | */ |
| 2753 | static struct ahd_tmode_tstate * |
| 2754 | ahd_alloc_tstate(struct ahd_softc *ahd, u_int scsi_id, char channel) |
| 2755 | { |
| 2756 | struct ahd_tmode_tstate *master_tstate; |
| 2757 | struct ahd_tmode_tstate *tstate; |
| 2758 | int i; |
| 2759 | |
| 2760 | master_tstate = ahd->enabled_targets[ahd->our_id]; |
| 2761 | if (ahd->enabled_targets[scsi_id] != NULL |
| 2762 | && ahd->enabled_targets[scsi_id] != master_tstate) |
| 2763 | panic("%s: ahd_alloc_tstate - Target already allocated", |
| 2764 | ahd_name(ahd)); |
| 2765 | tstate = malloc(sizeof(*tstate), M_DEVBUF, M_NOWAIT); |
| 2766 | if (tstate == NULL) |
| 2767 | return (NULL); |
| 2768 | |
| 2769 | /* |
| 2770 | * If we have allocated a master tstate, copy user settings from |
| 2771 | * the master tstate (taken from SRAM or the EEPROM) for this |
| 2772 | * channel, but reset our current and goal settings to async/narrow |
| 2773 | * until an initiator talks to us. |
| 2774 | */ |
| 2775 | if (master_tstate != NULL) { |
| 2776 | memcpy(tstate, master_tstate, sizeof(*tstate)); |
| 2777 | memset(tstate->enabled_luns, 0, sizeof(tstate->enabled_luns)); |
| 2778 | for (i = 0; i < 16; i++) { |
| 2779 | memset(&tstate->transinfo[i].curr, 0, |
| 2780 | sizeof(tstate->transinfo[i].curr)); |
| 2781 | memset(&tstate->transinfo[i].goal, 0, |
| 2782 | sizeof(tstate->transinfo[i].goal)); |
| 2783 | } |
| 2784 | } else |
| 2785 | memset(tstate, 0, sizeof(*tstate)); |
| 2786 | ahd->enabled_targets[scsi_id] = tstate; |
| 2787 | return (tstate); |
| 2788 | } |
| 2789 | |
| 2790 | #ifdef AHD_TARGET_MODE |
| 2791 | /* |
| 2792 | * Free per target mode instance (ID we respond to as a target) |
| 2793 | * transfer negotiation data structures. |
| 2794 | */ |
| 2795 | static void |
| 2796 | ahd_free_tstate(struct ahd_softc *ahd, u_int scsi_id, char channel, int force) |
| 2797 | { |
| 2798 | struct ahd_tmode_tstate *tstate; |
| 2799 | |
| 2800 | /* |
| 2801 | * Don't clean up our "master" tstate. |
| 2802 | * It has our default user settings. |
| 2803 | */ |
| 2804 | if (scsi_id == ahd->our_id |
| 2805 | && force == FALSE) |
| 2806 | return; |
| 2807 | |
| 2808 | tstate = ahd->enabled_targets[scsi_id]; |
| 2809 | if (tstate != NULL) |
| 2810 | free(tstate, M_DEVBUF); |
| 2811 | ahd->enabled_targets[scsi_id] = NULL; |
| 2812 | } |
| 2813 | #endif |
| 2814 | |
| 2815 | /* |
| 2816 | * Called when we have an active connection to a target on the bus, |
| 2817 | * this function finds the nearest period to the input period limited |
| 2818 | * by the capabilities of the bus connectivity of and sync settings for |
| 2819 | * the target. |
| 2820 | */ |
| 2821 | void |
| 2822 | ahd_devlimited_syncrate(struct ahd_softc *ahd, |
| 2823 | struct ahd_initiator_tinfo *tinfo, |
| 2824 | u_int *period, u_int *ppr_options, role_t role) |
| 2825 | { |
| 2826 | struct ahd_transinfo *transinfo; |
| 2827 | u_int maxsync; |
| 2828 | |
| 2829 | if ((ahd_inb(ahd, SBLKCTL) & ENAB40) != 0 |
| 2830 | && (ahd_inb(ahd, SSTAT2) & EXP_ACTIVE) == 0) { |
| 2831 | maxsync = AHD_SYNCRATE_PACED; |
| 2832 | } else { |
| 2833 | maxsync = AHD_SYNCRATE_ULTRA; |
| 2834 | /* Can't do DT related options on an SE bus */ |
| 2835 | *ppr_options &= MSG_EXT_PPR_QAS_REQ; |
| 2836 | } |
| 2837 | /* |
| 2838 | * Never allow a value higher than our current goal |
| 2839 | * period otherwise we may allow a target initiated |
| 2840 | * negotiation to go above the limit as set by the |
| 2841 | * user. In the case of an initiator initiated |
| 2842 | * sync negotiation, we limit based on the user |
| 2843 | * setting. This allows the system to still accept |
| 2844 | * incoming negotiations even if target initiated |
| 2845 | * negotiation is not performed. |
| 2846 | */ |
| 2847 | if (role == ROLE_TARGET) |
| 2848 | transinfo = &tinfo->user; |
| 2849 | else |
| 2850 | transinfo = &tinfo->goal; |
| 2851 | *ppr_options &= (transinfo->ppr_options|MSG_EXT_PPR_PCOMP_EN); |
| 2852 | if (transinfo->width == MSG_EXT_WDTR_BUS_8_BIT) { |
| 2853 | maxsync = MAX(maxsync, AHD_SYNCRATE_ULTRA2); |
| 2854 | *ppr_options &= ~MSG_EXT_PPR_DT_REQ; |
| 2855 | } |
| 2856 | if (transinfo->period == 0) { |
| 2857 | *period = 0; |
| 2858 | *ppr_options = 0; |
| 2859 | } else { |
| 2860 | *period = MAX(*period, transinfo->period); |
| 2861 | ahd_find_syncrate(ahd, period, ppr_options, maxsync); |
| 2862 | } |
| 2863 | } |
| 2864 | |
| 2865 | /* |
| 2866 | * Look up the valid period to SCSIRATE conversion in our table. |
| 2867 | * Return the period and offset that should be sent to the target |
| 2868 | * if this was the beginning of an SDTR. |
| 2869 | */ |
| 2870 | void |
| 2871 | ahd_find_syncrate(struct ahd_softc *ahd, u_int *period, |
| 2872 | u_int *ppr_options, u_int maxsync) |
| 2873 | { |
| 2874 | if (*period < maxsync) |
| 2875 | *period = maxsync; |
| 2876 | |
| 2877 | if ((*ppr_options & MSG_EXT_PPR_DT_REQ) != 0 |
| 2878 | && *period > AHD_SYNCRATE_MIN_DT) |
| 2879 | *ppr_options &= ~MSG_EXT_PPR_DT_REQ; |
| 2880 | |
| 2881 | if (*period > AHD_SYNCRATE_MIN) |
| 2882 | *period = 0; |
| 2883 | |
| 2884 | /* Honor PPR option conformance rules. */ |
| 2885 | if (*period > AHD_SYNCRATE_PACED) |
| 2886 | *ppr_options &= ~MSG_EXT_PPR_RTI; |
| 2887 | |
| 2888 | if ((*ppr_options & MSG_EXT_PPR_IU_REQ) == 0) |
| 2889 | *ppr_options &= (MSG_EXT_PPR_DT_REQ|MSG_EXT_PPR_QAS_REQ); |
| 2890 | |
| 2891 | if ((*ppr_options & MSG_EXT_PPR_DT_REQ) == 0) |
| 2892 | *ppr_options &= MSG_EXT_PPR_QAS_REQ; |
| 2893 | |
| 2894 | /* Skip all PACED only entries if IU is not available */ |
| 2895 | if ((*ppr_options & MSG_EXT_PPR_IU_REQ) == 0 |
| 2896 | && *period < AHD_SYNCRATE_DT) |
| 2897 | *period = AHD_SYNCRATE_DT; |
| 2898 | |
| 2899 | /* Skip all DT only entries if DT is not available */ |
| 2900 | if ((*ppr_options & MSG_EXT_PPR_DT_REQ) == 0 |
| 2901 | && *period < AHD_SYNCRATE_ULTRA2) |
| 2902 | *period = AHD_SYNCRATE_ULTRA2; |
| 2903 | } |
| 2904 | |
| 2905 | /* |
| 2906 | * Truncate the given synchronous offset to a value the |
| 2907 | * current adapter type and syncrate are capable of. |
| 2908 | */ |
| 2909 | void |
| 2910 | ahd_validate_offset(struct ahd_softc *ahd, |
| 2911 | struct ahd_initiator_tinfo *tinfo, |
| 2912 | u_int period, u_int *offset, int wide, |
| 2913 | role_t role) |
| 2914 | { |
| 2915 | u_int maxoffset; |
| 2916 | |
| 2917 | /* Limit offset to what we can do */ |
| 2918 | if (period == 0) |
| 2919 | maxoffset = 0; |
| 2920 | else if (period <= AHD_SYNCRATE_PACED) { |
| 2921 | if ((ahd->bugs & AHD_PACED_NEGTABLE_BUG) != 0) |
| 2922 | maxoffset = MAX_OFFSET_PACED_BUG; |
| 2923 | else |
| 2924 | maxoffset = MAX_OFFSET_PACED; |
| 2925 | } else |
| 2926 | maxoffset = MAX_OFFSET_NON_PACED; |
| 2927 | *offset = MIN(*offset, maxoffset); |
| 2928 | if (tinfo != NULL) { |
| 2929 | if (role == ROLE_TARGET) |
| 2930 | *offset = MIN(*offset, tinfo->user.offset); |
| 2931 | else |
| 2932 | *offset = MIN(*offset, tinfo->goal.offset); |
| 2933 | } |
| 2934 | } |
| 2935 | |
| 2936 | /* |
| 2937 | * Truncate the given transfer width parameter to a value the |
| 2938 | * current adapter type is capable of. |
| 2939 | */ |
| 2940 | void |
| 2941 | ahd_validate_width(struct ahd_softc *ahd, struct ahd_initiator_tinfo *tinfo, |
| 2942 | u_int *bus_width, role_t role) |
| 2943 | { |
| 2944 | switch (*bus_width) { |
| 2945 | default: |
| 2946 | if (ahd->features & AHD_WIDE) { |
| 2947 | /* Respond Wide */ |
| 2948 | *bus_width = MSG_EXT_WDTR_BUS_16_BIT; |
| 2949 | break; |
| 2950 | } |
| 2951 | /* FALLTHROUGH */ |
| 2952 | case MSG_EXT_WDTR_BUS_8_BIT: |
| 2953 | *bus_width = MSG_EXT_WDTR_BUS_8_BIT; |
| 2954 | break; |
| 2955 | } |
| 2956 | if (tinfo != NULL) { |
| 2957 | if (role == ROLE_TARGET) |
| 2958 | *bus_width = MIN(tinfo->user.width, *bus_width); |
| 2959 | else |
| 2960 | *bus_width = MIN(tinfo->goal.width, *bus_width); |
| 2961 | } |
| 2962 | } |
| 2963 | |
| 2964 | /* |
| 2965 | * Update the bitmask of targets for which the controller should |
| 2966 | * negotiate with at the next convenient oportunity. This currently |
| 2967 | * means the next time we send the initial identify messages for |
| 2968 | * a new transaction. |
| 2969 | */ |
| 2970 | int |
| 2971 | ahd_update_neg_request(struct ahd_softc *ahd, struct ahd_devinfo *devinfo, |
| 2972 | struct ahd_tmode_tstate *tstate, |
| 2973 | struct ahd_initiator_tinfo *tinfo, ahd_neg_type neg_type) |
| 2974 | { |
| 2975 | u_int auto_negotiate_orig; |
| 2976 | |
| 2977 | auto_negotiate_orig = tstate->auto_negotiate; |
| 2978 | if (neg_type == AHD_NEG_ALWAYS) { |
| 2979 | /* |
| 2980 | * Force our "current" settings to be |
| 2981 | * unknown so that unless a bus reset |
| 2982 | * occurs the need to renegotiate is |
| 2983 | * recorded persistently. |
| 2984 | */ |
| 2985 | if ((ahd->features & AHD_WIDE) != 0) |
| 2986 | tinfo->curr.width = AHD_WIDTH_UNKNOWN; |
| 2987 | tinfo->curr.period = AHD_PERIOD_UNKNOWN; |
| 2988 | tinfo->curr.offset = AHD_OFFSET_UNKNOWN; |
| 2989 | } |
| 2990 | if (tinfo->curr.period != tinfo->goal.period |
| 2991 | || tinfo->curr.width != tinfo->goal.width |
| 2992 | || tinfo->curr.offset != tinfo->goal.offset |
| 2993 | || tinfo->curr.ppr_options != tinfo->goal.ppr_options |
| 2994 | || (neg_type == AHD_NEG_IF_NON_ASYNC |
| 2995 | && (tinfo->goal.offset != 0 |
| 2996 | || tinfo->goal.width != MSG_EXT_WDTR_BUS_8_BIT |
| 2997 | || tinfo->goal.ppr_options != 0))) |
| 2998 | tstate->auto_negotiate |= devinfo->target_mask; |
| 2999 | else |
| 3000 | tstate->auto_negotiate &= ~devinfo->target_mask; |
| 3001 | |
| 3002 | return (auto_negotiate_orig != tstate->auto_negotiate); |
| 3003 | } |
| 3004 | |
| 3005 | /* |
| 3006 | * Update the user/goal/curr tables of synchronous negotiation |
| 3007 | * parameters as well as, in the case of a current or active update, |
| 3008 | * any data structures on the host controller. In the case of an |
| 3009 | * active update, the specified target is currently talking to us on |
| 3010 | * the bus, so the transfer parameter update must take effect |
| 3011 | * immediately. |
| 3012 | */ |
| 3013 | void |
| 3014 | ahd_set_syncrate(struct ahd_softc *ahd, struct ahd_devinfo *devinfo, |
| 3015 | u_int period, u_int offset, u_int ppr_options, |
| 3016 | u_int type, int paused) |
| 3017 | { |
| 3018 | struct ahd_initiator_tinfo *tinfo; |
| 3019 | struct ahd_tmode_tstate *tstate; |
| 3020 | u_int old_period; |
| 3021 | u_int old_offset; |
| 3022 | u_int old_ppr; |
| 3023 | int active; |
| 3024 | int update_needed; |
| 3025 | |
| 3026 | active = (type & AHD_TRANS_ACTIVE) == AHD_TRANS_ACTIVE; |
| 3027 | update_needed = 0; |
| 3028 | |
| 3029 | if (period == 0 || offset == 0) { |
| 3030 | period = 0; |
| 3031 | offset = 0; |
| 3032 | } |
| 3033 | |
| 3034 | tinfo = ahd_fetch_transinfo(ahd, devinfo->channel, devinfo->our_scsiid, |
| 3035 | devinfo->target, &tstate); |
| 3036 | |
| 3037 | if ((type & AHD_TRANS_USER) != 0) { |
| 3038 | tinfo->user.period = period; |
| 3039 | tinfo->user.offset = offset; |
| 3040 | tinfo->user.ppr_options = ppr_options; |
| 3041 | } |
| 3042 | |
| 3043 | if ((type & AHD_TRANS_GOAL) != 0) { |
| 3044 | tinfo->goal.period = period; |
| 3045 | tinfo->goal.offset = offset; |
| 3046 | tinfo->goal.ppr_options = ppr_options; |
| 3047 | } |
| 3048 | |
| 3049 | old_period = tinfo->curr.period; |
| 3050 | old_offset = tinfo->curr.offset; |
| 3051 | old_ppr = tinfo->curr.ppr_options; |
| 3052 | |
| 3053 | if ((type & AHD_TRANS_CUR) != 0 |
| 3054 | && (old_period != period |
| 3055 | || old_offset != offset |
| 3056 | || old_ppr != ppr_options)) { |
| 3057 | |
| 3058 | update_needed++; |
| 3059 | |
| 3060 | tinfo->curr.period = period; |
| 3061 | tinfo->curr.offset = offset; |
| 3062 | tinfo->curr.ppr_options = ppr_options; |
| 3063 | |
| 3064 | ahd_send_async(ahd, devinfo->channel, devinfo->target, |
| 3065 | CAM_LUN_WILDCARD, AC_TRANSFER_NEG, NULL); |
| 3066 | if (bootverbose) { |
| 3067 | if (offset != 0) { |
| 3068 | int options; |
| 3069 | |
| 3070 | printf("%s: target %d synchronous with " |
| 3071 | "period = 0x%x, offset = 0x%x", |
| 3072 | ahd_name(ahd), devinfo->target, |
| 3073 | period, offset); |
| 3074 | options = 0; |
| 3075 | if ((ppr_options & MSG_EXT_PPR_RD_STRM) != 0) { |
| 3076 | printf("(RDSTRM"); |
| 3077 | options++; |
| 3078 | } |
| 3079 | if ((ppr_options & MSG_EXT_PPR_DT_REQ) != 0) { |
| 3080 | printf("%s", options ? "|DT" : "(DT"); |
| 3081 | options++; |
| 3082 | } |
| 3083 | if ((ppr_options & MSG_EXT_PPR_IU_REQ) != 0) { |
| 3084 | printf("%s", options ? "|IU" : "(IU"); |
| 3085 | options++; |
| 3086 | } |
| 3087 | if ((ppr_options & MSG_EXT_PPR_RTI) != 0) { |
| 3088 | printf("%s", options ? "|RTI" : "(RTI"); |
| 3089 | options++; |
| 3090 | } |
| 3091 | if ((ppr_options & MSG_EXT_PPR_QAS_REQ) != 0) { |
| 3092 | printf("%s", options ? "|QAS" : "(QAS"); |
| 3093 | options++; |
| 3094 | } |
| 3095 | if (options != 0) |
| 3096 | printf(")\n"); |
| 3097 | else |
| 3098 | printf("\n"); |
| 3099 | } else { |
| 3100 | printf("%s: target %d using " |
| 3101 | "asynchronous transfers%s\n", |
| 3102 | ahd_name(ahd), devinfo->target, |
| 3103 | (ppr_options & MSG_EXT_PPR_QAS_REQ) != 0 |
| 3104 | ? "(QAS)" : ""); |
| 3105 | } |
| 3106 | } |
| 3107 | } |
| 3108 | /* |
| 3109 | * Always refresh the neg-table to handle the case of the |
| 3110 | * sequencer setting the ENATNO bit for a MK_MESSAGE request. |
| 3111 | * We will always renegotiate in that case if this is a |
| 3112 | * packetized request. Also manage the busfree expected flag |
| 3113 | * from this common routine so that we catch changes due to |
| 3114 | * WDTR or SDTR messages. |
| 3115 | */ |
| 3116 | if ((type & AHD_TRANS_CUR) != 0) { |
| 3117 | if (!paused) |
| 3118 | ahd_pause(ahd); |
| 3119 | ahd_update_neg_table(ahd, devinfo, &tinfo->curr); |
| 3120 | if (!paused) |
| 3121 | ahd_unpause(ahd); |
| 3122 | if (ahd->msg_type != MSG_TYPE_NONE) { |
| 3123 | if ((old_ppr & MSG_EXT_PPR_IU_REQ) |
| 3124 | != (ppr_options & MSG_EXT_PPR_IU_REQ)) { |
| 3125 | #ifdef AHD_DEBUG |
| 3126 | if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) { |
| 3127 | ahd_print_devinfo(ahd, devinfo); |
| 3128 | printf("Expecting IU Change busfree\n"); |
| 3129 | } |
| 3130 | #endif |
| 3131 | ahd->msg_flags |= MSG_FLAG_EXPECT_PPR_BUSFREE |
| 3132 | | MSG_FLAG_IU_REQ_CHANGED; |
| 3133 | } |
| 3134 | if ((old_ppr & MSG_EXT_PPR_IU_REQ) != 0) { |
| 3135 | #ifdef AHD_DEBUG |
| 3136 | if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) |
| 3137 | printf("PPR with IU_REQ outstanding\n"); |
| 3138 | #endif |
| 3139 | ahd->msg_flags |= MSG_FLAG_EXPECT_PPR_BUSFREE; |
| 3140 | } |
| 3141 | } |
| 3142 | } |
| 3143 | |
| 3144 | update_needed += ahd_update_neg_request(ahd, devinfo, tstate, |
| 3145 | tinfo, AHD_NEG_TO_GOAL); |
| 3146 | |
| 3147 | if (update_needed && active) |
| 3148 | ahd_update_pending_scbs(ahd); |
| 3149 | } |
| 3150 | |
| 3151 | /* |
| 3152 | * Update the user/goal/curr tables of wide negotiation |
| 3153 | * parameters as well as, in the case of a current or active update, |
| 3154 | * any data structures on the host controller. In the case of an |
| 3155 | * active update, the specified target is currently talking to us on |
| 3156 | * the bus, so the transfer parameter update must take effect |
| 3157 | * immediately. |
| 3158 | */ |
| 3159 | void |
| 3160 | ahd_set_width(struct ahd_softc *ahd, struct ahd_devinfo *devinfo, |
| 3161 | u_int width, u_int type, int paused) |
| 3162 | { |
| 3163 | struct ahd_initiator_tinfo *tinfo; |
| 3164 | struct ahd_tmode_tstate *tstate; |
| 3165 | u_int oldwidth; |
| 3166 | int active; |
| 3167 | int update_needed; |
| 3168 | |
| 3169 | active = (type & AHD_TRANS_ACTIVE) == AHD_TRANS_ACTIVE; |
| 3170 | update_needed = 0; |
| 3171 | tinfo = ahd_fetch_transinfo(ahd, devinfo->channel, devinfo->our_scsiid, |
| 3172 | devinfo->target, &tstate); |
| 3173 | |
| 3174 | if ((type & AHD_TRANS_USER) != 0) |
| 3175 | tinfo->user.width = width; |
| 3176 | |
| 3177 | if ((type & AHD_TRANS_GOAL) != 0) |
| 3178 | tinfo->goal.width = width; |
| 3179 | |
| 3180 | oldwidth = tinfo->curr.width; |
| 3181 | if ((type & AHD_TRANS_CUR) != 0 && oldwidth != width) { |
| 3182 | |
| 3183 | update_needed++; |
| 3184 | |
| 3185 | tinfo->curr.width = width; |
| 3186 | ahd_send_async(ahd, devinfo->channel, devinfo->target, |
| 3187 | CAM_LUN_WILDCARD, AC_TRANSFER_NEG, NULL); |
| 3188 | if (bootverbose) { |
| 3189 | printf("%s: target %d using %dbit transfers\n", |
| 3190 | ahd_name(ahd), devinfo->target, |
| 3191 | 8 * (0x01 << width)); |
| 3192 | } |
| 3193 | } |
| 3194 | |
| 3195 | if ((type & AHD_TRANS_CUR) != 0) { |
| 3196 | if (!paused) |
| 3197 | ahd_pause(ahd); |
| 3198 | ahd_update_neg_table(ahd, devinfo, &tinfo->curr); |
| 3199 | if (!paused) |
| 3200 | ahd_unpause(ahd); |
| 3201 | } |
| 3202 | |
| 3203 | update_needed += ahd_update_neg_request(ahd, devinfo, tstate, |
| 3204 | tinfo, AHD_NEG_TO_GOAL); |
| 3205 | if (update_needed && active) |
| 3206 | ahd_update_pending_scbs(ahd); |
| 3207 | |
| 3208 | } |
| 3209 | |
| 3210 | /* |
| 3211 | * Update the current state of tagged queuing for a given target. |
| 3212 | */ |
| 3213 | void |
| 3214 | ahd_set_tags(struct ahd_softc *ahd, struct ahd_devinfo *devinfo, |
| 3215 | ahd_queue_alg alg) |
| 3216 | { |
| 3217 | ahd_platform_set_tags(ahd, devinfo, alg); |
| 3218 | ahd_send_async(ahd, devinfo->channel, devinfo->target, |
| 3219 | devinfo->lun, AC_TRANSFER_NEG, &alg); |
| 3220 | } |
| 3221 | |
| 3222 | static void |
| 3223 | ahd_update_neg_table(struct ahd_softc *ahd, struct ahd_devinfo *devinfo, |
| 3224 | struct ahd_transinfo *tinfo) |
| 3225 | { |
| 3226 | ahd_mode_state saved_modes; |
| 3227 | u_int period; |
| 3228 | u_int ppr_opts; |
| 3229 | u_int con_opts; |
| 3230 | u_int offset; |
| 3231 | u_int saved_negoaddr; |
| 3232 | uint8_t iocell_opts[sizeof(ahd->iocell_opts)]; |
| 3233 | |
| 3234 | saved_modes = ahd_save_modes(ahd); |
| 3235 | ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); |
| 3236 | |
| 3237 | saved_negoaddr = ahd_inb(ahd, NEGOADDR); |
| 3238 | ahd_outb(ahd, NEGOADDR, devinfo->target); |
| 3239 | period = tinfo->period; |
| 3240 | offset = tinfo->offset; |
| 3241 | memcpy(iocell_opts, ahd->iocell_opts, sizeof(ahd->iocell_opts)); |
| 3242 | ppr_opts = tinfo->ppr_options & (MSG_EXT_PPR_QAS_REQ|MSG_EXT_PPR_DT_REQ |
| 3243 | |MSG_EXT_PPR_IU_REQ|MSG_EXT_PPR_RTI); |
| 3244 | con_opts = 0; |
| 3245 | if (period == 0) |
| 3246 | period = AHD_SYNCRATE_ASYNC; |
| 3247 | if (period == AHD_SYNCRATE_160) { |
| 3248 | |
| 3249 | if ((ahd->bugs & AHD_PACED_NEGTABLE_BUG) != 0) { |
| 3250 | /* |
| 3251 | * When the SPI4 spec was finalized, PACE transfers |
| 3252 | * was not made a configurable option in the PPR |
| 3253 | * message. Instead it is assumed to be enabled for |
| 3254 | * any syncrate faster than 80MHz. Nevertheless, |
| 3255 | * Harpoon2A4 allows this to be configurable. |
| 3256 | * |
| 3257 | * Harpoon2A4 also assumes at most 2 data bytes per |
| 3258 | * negotiated REQ/ACK offset. Paced transfers take |
| 3259 | * 4, so we must adjust our offset. |
| 3260 | */ |
| 3261 | ppr_opts |= PPROPT_PACE; |
| 3262 | offset *= 2; |
| 3263 | |
| 3264 | /* |
| 3265 | * Harpoon2A assumed that there would be a |
| 3266 | * fallback rate between 160MHz and 80Mhz, |
| 3267 | * so 7 is used as the period factor rather |
| 3268 | * than 8 for 160MHz. |
| 3269 | */ |
| 3270 | period = AHD_SYNCRATE_REVA_160; |
| 3271 | } |
| 3272 | if ((tinfo->ppr_options & MSG_EXT_PPR_PCOMP_EN) == 0) |
| 3273 | iocell_opts[AHD_PRECOMP_SLEW_INDEX] &= |
| 3274 | ~AHD_PRECOMP_MASK; |
| 3275 | } else { |
| 3276 | /* |
| 3277 | * Precomp should be disabled for non-paced transfers. |
| 3278 | */ |
| 3279 | iocell_opts[AHD_PRECOMP_SLEW_INDEX] &= ~AHD_PRECOMP_MASK; |
| 3280 | |
| 3281 | if ((ahd->features & AHD_NEW_IOCELL_OPTS) != 0 |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 3282 | && (ppr_opts & MSG_EXT_PPR_DT_REQ) != 0 |
| 3283 | && (ppr_opts & MSG_EXT_PPR_IU_REQ) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3284 | /* |
| 3285 | * Slow down our CRC interval to be |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 3286 | * compatible with non-packetized |
| 3287 | * U160 devices that can't handle a |
| 3288 | * CRC at full speed. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3289 | */ |
| 3290 | con_opts |= ENSLOWCRC; |
| 3291 | } |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 3292 | |
| 3293 | if ((ahd->bugs & AHD_PACED_NEGTABLE_BUG) != 0) { |
| 3294 | /* |
| 3295 | * On H2A4, revert to a slower slewrate |
| 3296 | * on non-paced transfers. |
| 3297 | */ |
| 3298 | iocell_opts[AHD_PRECOMP_SLEW_INDEX] &= |
| 3299 | ~AHD_SLEWRATE_MASK; |
| 3300 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3301 | } |
| 3302 | |
| 3303 | ahd_outb(ahd, ANNEXCOL, AHD_ANNEXCOL_PRECOMP_SLEW); |
| 3304 | ahd_outb(ahd, ANNEXDAT, iocell_opts[AHD_PRECOMP_SLEW_INDEX]); |
| 3305 | ahd_outb(ahd, ANNEXCOL, AHD_ANNEXCOL_AMPLITUDE); |
| 3306 | ahd_outb(ahd, ANNEXDAT, iocell_opts[AHD_AMPLITUDE_INDEX]); |
| 3307 | |
| 3308 | ahd_outb(ahd, NEGPERIOD, period); |
| 3309 | ahd_outb(ahd, NEGPPROPTS, ppr_opts); |
| 3310 | ahd_outb(ahd, NEGOFFSET, offset); |
| 3311 | |
| 3312 | if (tinfo->width == MSG_EXT_WDTR_BUS_16_BIT) |
| 3313 | con_opts |= WIDEXFER; |
| 3314 | |
| 3315 | /* |
Hannes Reinecke | 3fb0861 | 2006-01-24 10:44:38 +0100 | [diff] [blame] | 3316 | * Slow down our CRC interval to be |
| 3317 | * compatible with packetized U320 devices |
| 3318 | * that can't handle a CRC at full speed |
| 3319 | */ |
| 3320 | if (ahd->features & AHD_AIC79XXB_SLOWCRC) { |
| 3321 | con_opts |= ENSLOWCRC; |
| 3322 | } |
| 3323 | |
| 3324 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3325 | * During packetized transfers, the target will |
| 3326 | * give us the oportunity to send command packets |
| 3327 | * without us asserting attention. |
| 3328 | */ |
| 3329 | if ((tinfo->ppr_options & MSG_EXT_PPR_IU_REQ) == 0) |
| 3330 | con_opts |= ENAUTOATNO; |
| 3331 | ahd_outb(ahd, NEGCONOPTS, con_opts); |
| 3332 | ahd_outb(ahd, NEGOADDR, saved_negoaddr); |
| 3333 | ahd_restore_modes(ahd, saved_modes); |
| 3334 | } |
| 3335 | |
| 3336 | /* |
| 3337 | * When the transfer settings for a connection change, setup for |
| 3338 | * negotiation in pending SCBs to effect the change as quickly as |
| 3339 | * possible. We also cancel any negotiations that are scheduled |
| 3340 | * for inflight SCBs that have not been started yet. |
| 3341 | */ |
| 3342 | static void |
| 3343 | ahd_update_pending_scbs(struct ahd_softc *ahd) |
| 3344 | { |
| 3345 | struct scb *pending_scb; |
| 3346 | int pending_scb_count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3347 | int paused; |
| 3348 | u_int saved_scbptr; |
| 3349 | ahd_mode_state saved_modes; |
| 3350 | |
| 3351 | /* |
| 3352 | * Traverse the pending SCB list and ensure that all of the |
| 3353 | * SCBs there have the proper settings. We can only safely |
| 3354 | * clear the negotiation required flag (setting requires the |
| 3355 | * execution queue to be modified) and this is only possible |
| 3356 | * if we are not already attempting to select out for this |
| 3357 | * SCB. For this reason, all callers only call this routine |
| 3358 | * if we are changing the negotiation settings for the currently |
| 3359 | * active transaction on the bus. |
| 3360 | */ |
| 3361 | pending_scb_count = 0; |
| 3362 | LIST_FOREACH(pending_scb, &ahd->pending_scbs, pending_links) { |
| 3363 | struct ahd_devinfo devinfo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3364 | struct ahd_initiator_tinfo *tinfo; |
| 3365 | struct ahd_tmode_tstate *tstate; |
| 3366 | |
| 3367 | ahd_scb_devinfo(ahd, &devinfo, pending_scb); |
| 3368 | tinfo = ahd_fetch_transinfo(ahd, devinfo.channel, |
| 3369 | devinfo.our_scsiid, |
| 3370 | devinfo.target, &tstate); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3371 | if ((tstate->auto_negotiate & devinfo.target_mask) == 0 |
| 3372 | && (pending_scb->flags & SCB_AUTO_NEGOTIATE) != 0) { |
| 3373 | pending_scb->flags &= ~SCB_AUTO_NEGOTIATE; |
Hannes Reinecke | 53467e6 | 2006-01-24 10:43:26 +0100 | [diff] [blame] | 3374 | pending_scb->hscb->control &= ~MK_MESSAGE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3375 | } |
| 3376 | ahd_sync_scb(ahd, pending_scb, |
| 3377 | BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); |
| 3378 | pending_scb_count++; |
| 3379 | } |
| 3380 | |
| 3381 | if (pending_scb_count == 0) |
| 3382 | return; |
| 3383 | |
| 3384 | if (ahd_is_paused(ahd)) { |
| 3385 | paused = 1; |
| 3386 | } else { |
| 3387 | paused = 0; |
| 3388 | ahd_pause(ahd); |
| 3389 | } |
| 3390 | |
| 3391 | /* |
| 3392 | * Force the sequencer to reinitialize the selection for |
| 3393 | * the command at the head of the execution queue if it |
| 3394 | * has already been setup. The negotiation changes may |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 3395 | * effect whether we select-out with ATN. It is only |
| 3396 | * safe to clear ENSELO when the bus is not free and no |
| 3397 | * selection is in progres or completed. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3398 | */ |
| 3399 | saved_modes = ahd_save_modes(ahd); |
| 3400 | ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 3401 | if ((ahd_inb(ahd, SCSISIGI) & BSYI) != 0 |
| 3402 | && (ahd_inb(ahd, SSTAT0) & (SELDO|SELINGO)) == 0) |
| 3403 | ahd_outb(ahd, SCSISEQ0, ahd_inb(ahd, SCSISEQ0) & ~ENSELO); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3404 | saved_scbptr = ahd_get_scbptr(ahd); |
| 3405 | /* Ensure that the hscbs down on the card match the new information */ |
Hannes Reinecke | 53467e6 | 2006-01-24 10:43:26 +0100 | [diff] [blame] | 3406 | LIST_FOREACH(pending_scb, &ahd->pending_scbs, pending_links) { |
| 3407 | u_int scb_tag; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3408 | u_int control; |
| 3409 | |
Hannes Reinecke | 53467e6 | 2006-01-24 10:43:26 +0100 | [diff] [blame] | 3410 | scb_tag = SCB_GET_TAG(pending_scb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3411 | ahd_set_scbptr(ahd, scb_tag); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3412 | control = ahd_inb_scbram(ahd, SCB_CONTROL); |
| 3413 | control &= ~MK_MESSAGE; |
Hannes Reinecke | 53467e6 | 2006-01-24 10:43:26 +0100 | [diff] [blame] | 3414 | control |= pending_scb->hscb->control & MK_MESSAGE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3415 | ahd_outb(ahd, SCB_CONTROL, control); |
| 3416 | } |
| 3417 | ahd_set_scbptr(ahd, saved_scbptr); |
| 3418 | ahd_restore_modes(ahd, saved_modes); |
| 3419 | |
| 3420 | if (paused == 0) |
| 3421 | ahd_unpause(ahd); |
| 3422 | } |
| 3423 | |
| 3424 | /**************************** Pathing Information *****************************/ |
| 3425 | static void |
| 3426 | ahd_fetch_devinfo(struct ahd_softc *ahd, struct ahd_devinfo *devinfo) |
| 3427 | { |
| 3428 | ahd_mode_state saved_modes; |
| 3429 | u_int saved_scsiid; |
| 3430 | role_t role; |
| 3431 | int our_id; |
| 3432 | |
| 3433 | saved_modes = ahd_save_modes(ahd); |
| 3434 | ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); |
| 3435 | |
| 3436 | if (ahd_inb(ahd, SSTAT0) & TARGET) |
| 3437 | role = ROLE_TARGET; |
| 3438 | else |
| 3439 | role = ROLE_INITIATOR; |
| 3440 | |
| 3441 | if (role == ROLE_TARGET |
| 3442 | && (ahd_inb(ahd, SEQ_FLAGS) & CMDPHASE_PENDING) != 0) { |
| 3443 | /* We were selected, so pull our id from TARGIDIN */ |
| 3444 | our_id = ahd_inb(ahd, TARGIDIN) & OID; |
| 3445 | } else if (role == ROLE_TARGET) |
| 3446 | our_id = ahd_inb(ahd, TOWNID); |
| 3447 | else |
| 3448 | our_id = ahd_inb(ahd, IOWNID); |
| 3449 | |
| 3450 | saved_scsiid = ahd_inb(ahd, SAVED_SCSIID); |
| 3451 | ahd_compile_devinfo(devinfo, |
| 3452 | our_id, |
| 3453 | SCSIID_TARGET(ahd, saved_scsiid), |
| 3454 | ahd_inb(ahd, SAVED_LUN), |
| 3455 | SCSIID_CHANNEL(ahd, saved_scsiid), |
| 3456 | role); |
| 3457 | ahd_restore_modes(ahd, saved_modes); |
| 3458 | } |
| 3459 | |
| 3460 | void |
| 3461 | ahd_print_devinfo(struct ahd_softc *ahd, struct ahd_devinfo *devinfo) |
| 3462 | { |
| 3463 | printf("%s:%c:%d:%d: ", ahd_name(ahd), 'A', |
| 3464 | devinfo->target, devinfo->lun); |
| 3465 | } |
| 3466 | |
| 3467 | struct ahd_phase_table_entry* |
| 3468 | ahd_lookup_phase_entry(int phase) |
| 3469 | { |
| 3470 | struct ahd_phase_table_entry *entry; |
| 3471 | struct ahd_phase_table_entry *last_entry; |
| 3472 | |
| 3473 | /* |
| 3474 | * num_phases doesn't include the default entry which |
| 3475 | * will be returned if the phase doesn't match. |
| 3476 | */ |
| 3477 | last_entry = &ahd_phase_table[num_phases]; |
| 3478 | for (entry = ahd_phase_table; entry < last_entry; entry++) { |
| 3479 | if (phase == entry->phase) |
| 3480 | break; |
| 3481 | } |
| 3482 | return (entry); |
| 3483 | } |
| 3484 | |
| 3485 | void |
| 3486 | ahd_compile_devinfo(struct ahd_devinfo *devinfo, u_int our_id, u_int target, |
| 3487 | u_int lun, char channel, role_t role) |
| 3488 | { |
| 3489 | devinfo->our_scsiid = our_id; |
| 3490 | devinfo->target = target; |
| 3491 | devinfo->lun = lun; |
| 3492 | devinfo->target_offset = target; |
| 3493 | devinfo->channel = channel; |
| 3494 | devinfo->role = role; |
| 3495 | if (channel == 'B') |
| 3496 | devinfo->target_offset += 8; |
| 3497 | devinfo->target_mask = (0x01 << devinfo->target_offset); |
| 3498 | } |
| 3499 | |
| 3500 | static void |
| 3501 | ahd_scb_devinfo(struct ahd_softc *ahd, struct ahd_devinfo *devinfo, |
| 3502 | struct scb *scb) |
| 3503 | { |
| 3504 | role_t role; |
| 3505 | int our_id; |
| 3506 | |
| 3507 | our_id = SCSIID_OUR_ID(scb->hscb->scsiid); |
| 3508 | role = ROLE_INITIATOR; |
| 3509 | if ((scb->hscb->control & TARGET_SCB) != 0) |
| 3510 | role = ROLE_TARGET; |
| 3511 | ahd_compile_devinfo(devinfo, our_id, SCB_GET_TARGET(ahd, scb), |
| 3512 | SCB_GET_LUN(scb), SCB_GET_CHANNEL(ahd, scb), role); |
| 3513 | } |
| 3514 | |
| 3515 | |
| 3516 | /************************ Message Phase Processing ****************************/ |
| 3517 | /* |
| 3518 | * When an initiator transaction with the MK_MESSAGE flag either reconnects |
| 3519 | * or enters the initial message out phase, we are interrupted. Fill our |
| 3520 | * outgoing message buffer with the appropriate message and beging handing |
| 3521 | * the message phase(s) manually. |
| 3522 | */ |
| 3523 | static void |
| 3524 | ahd_setup_initiator_msgout(struct ahd_softc *ahd, struct ahd_devinfo *devinfo, |
| 3525 | struct scb *scb) |
| 3526 | { |
| 3527 | /* |
| 3528 | * To facilitate adding multiple messages together, |
| 3529 | * each routine should increment the index and len |
| 3530 | * variables instead of setting them explicitly. |
| 3531 | */ |
| 3532 | ahd->msgout_index = 0; |
| 3533 | ahd->msgout_len = 0; |
| 3534 | |
| 3535 | if (ahd_currently_packetized(ahd)) |
| 3536 | ahd->msg_flags |= MSG_FLAG_PACKETIZED; |
| 3537 | |
| 3538 | if (ahd->send_msg_perror |
| 3539 | && ahd_inb(ahd, MSG_OUT) == HOST_MSG) { |
| 3540 | ahd->msgout_buf[ahd->msgout_index++] = ahd->send_msg_perror; |
| 3541 | ahd->msgout_len++; |
| 3542 | ahd->msg_type = MSG_TYPE_INITIATOR_MSGOUT; |
| 3543 | #ifdef AHD_DEBUG |
| 3544 | if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) |
| 3545 | printf("Setting up for Parity Error delivery\n"); |
| 3546 | #endif |
| 3547 | return; |
| 3548 | } else if (scb == NULL) { |
| 3549 | printf("%s: WARNING. No pending message for " |
| 3550 | "I_T msgin. Issuing NO-OP\n", ahd_name(ahd)); |
| 3551 | ahd->msgout_buf[ahd->msgout_index++] = MSG_NOOP; |
| 3552 | ahd->msgout_len++; |
| 3553 | ahd->msg_type = MSG_TYPE_INITIATOR_MSGOUT; |
| 3554 | return; |
| 3555 | } |
| 3556 | |
| 3557 | if ((scb->flags & SCB_DEVICE_RESET) == 0 |
| 3558 | && (scb->flags & SCB_PACKETIZED) == 0 |
| 3559 | && ahd_inb(ahd, MSG_OUT) == MSG_IDENTIFYFLAG) { |
| 3560 | u_int identify_msg; |
| 3561 | |
| 3562 | identify_msg = MSG_IDENTIFYFLAG | SCB_GET_LUN(scb); |
| 3563 | if ((scb->hscb->control & DISCENB) != 0) |
| 3564 | identify_msg |= MSG_IDENTIFY_DISCFLAG; |
| 3565 | ahd->msgout_buf[ahd->msgout_index++] = identify_msg; |
| 3566 | ahd->msgout_len++; |
| 3567 | |
| 3568 | if ((scb->hscb->control & TAG_ENB) != 0) { |
| 3569 | ahd->msgout_buf[ahd->msgout_index++] = |
| 3570 | scb->hscb->control & (TAG_ENB|SCB_TAG_TYPE); |
| 3571 | ahd->msgout_buf[ahd->msgout_index++] = SCB_GET_TAG(scb); |
| 3572 | ahd->msgout_len += 2; |
| 3573 | } |
| 3574 | } |
| 3575 | |
| 3576 | if (scb->flags & SCB_DEVICE_RESET) { |
| 3577 | ahd->msgout_buf[ahd->msgout_index++] = MSG_BUS_DEV_RESET; |
| 3578 | ahd->msgout_len++; |
| 3579 | ahd_print_path(ahd, scb); |
| 3580 | printf("Bus Device Reset Message Sent\n"); |
| 3581 | /* |
| 3582 | * Clear our selection hardware in advance of |
| 3583 | * the busfree. We may have an entry in the waiting |
| 3584 | * Q for this target, and we don't want to go about |
| 3585 | * selecting while we handle the busfree and blow it |
| 3586 | * away. |
| 3587 | */ |
| 3588 | ahd_outb(ahd, SCSISEQ0, 0); |
| 3589 | } else if ((scb->flags & SCB_ABORT) != 0) { |
| 3590 | |
| 3591 | if ((scb->hscb->control & TAG_ENB) != 0) { |
| 3592 | ahd->msgout_buf[ahd->msgout_index++] = MSG_ABORT_TAG; |
| 3593 | } else { |
| 3594 | ahd->msgout_buf[ahd->msgout_index++] = MSG_ABORT; |
| 3595 | } |
| 3596 | ahd->msgout_len++; |
| 3597 | ahd_print_path(ahd, scb); |
| 3598 | printf("Abort%s Message Sent\n", |
| 3599 | (scb->hscb->control & TAG_ENB) != 0 ? " Tag" : ""); |
| 3600 | /* |
| 3601 | * Clear our selection hardware in advance of |
| 3602 | * the busfree. We may have an entry in the waiting |
| 3603 | * Q for this target, and we don't want to go about |
| 3604 | * selecting while we handle the busfree and blow it |
| 3605 | * away. |
| 3606 | */ |
| 3607 | ahd_outb(ahd, SCSISEQ0, 0); |
| 3608 | } else if ((scb->flags & (SCB_AUTO_NEGOTIATE|SCB_NEGOTIATE)) != 0) { |
| 3609 | ahd_build_transfer_msg(ahd, devinfo); |
| 3610 | /* |
| 3611 | * Clear our selection hardware in advance of potential |
| 3612 | * PPR IU status change busfree. We may have an entry in |
| 3613 | * the waiting Q for this target, and we don't want to go |
| 3614 | * about selecting while we handle the busfree and blow |
| 3615 | * it away. |
| 3616 | */ |
| 3617 | ahd_outb(ahd, SCSISEQ0, 0); |
| 3618 | } else { |
| 3619 | printf("ahd_intr: AWAITING_MSG for an SCB that " |
| 3620 | "does not have a waiting message\n"); |
| 3621 | printf("SCSIID = %x, target_mask = %x\n", scb->hscb->scsiid, |
| 3622 | devinfo->target_mask); |
| 3623 | panic("SCB = %d, SCB Control = %x:%x, MSG_OUT = %x " |
| 3624 | "SCB flags = %x", SCB_GET_TAG(scb), scb->hscb->control, |
| 3625 | ahd_inb_scbram(ahd, SCB_CONTROL), ahd_inb(ahd, MSG_OUT), |
| 3626 | scb->flags); |
| 3627 | } |
| 3628 | |
| 3629 | /* |
| 3630 | * Clear the MK_MESSAGE flag from the SCB so we aren't |
| 3631 | * asked to send this message again. |
| 3632 | */ |
| 3633 | ahd_outb(ahd, SCB_CONTROL, |
| 3634 | ahd_inb_scbram(ahd, SCB_CONTROL) & ~MK_MESSAGE); |
| 3635 | scb->hscb->control &= ~MK_MESSAGE; |
| 3636 | ahd->msgout_index = 0; |
| 3637 | ahd->msg_type = MSG_TYPE_INITIATOR_MSGOUT; |
| 3638 | } |
| 3639 | |
| 3640 | /* |
| 3641 | * Build an appropriate transfer negotiation message for the |
| 3642 | * currently active target. |
| 3643 | */ |
| 3644 | static void |
| 3645 | ahd_build_transfer_msg(struct ahd_softc *ahd, struct ahd_devinfo *devinfo) |
| 3646 | { |
| 3647 | /* |
| 3648 | * We need to initiate transfer negotiations. |
| 3649 | * If our current and goal settings are identical, |
| 3650 | * we want to renegotiate due to a check condition. |
| 3651 | */ |
| 3652 | struct ahd_initiator_tinfo *tinfo; |
| 3653 | struct ahd_tmode_tstate *tstate; |
| 3654 | int dowide; |
| 3655 | int dosync; |
| 3656 | int doppr; |
| 3657 | u_int period; |
| 3658 | u_int ppr_options; |
| 3659 | u_int offset; |
| 3660 | |
| 3661 | tinfo = ahd_fetch_transinfo(ahd, devinfo->channel, devinfo->our_scsiid, |
| 3662 | devinfo->target, &tstate); |
| 3663 | /* |
| 3664 | * Filter our period based on the current connection. |
| 3665 | * If we can't perform DT transfers on this segment (not in LVD |
| 3666 | * mode for instance), then our decision to issue a PPR message |
| 3667 | * may change. |
| 3668 | */ |
| 3669 | period = tinfo->goal.period; |
| 3670 | offset = tinfo->goal.offset; |
| 3671 | ppr_options = tinfo->goal.ppr_options; |
| 3672 | /* Target initiated PPR is not allowed in the SCSI spec */ |
| 3673 | if (devinfo->role == ROLE_TARGET) |
| 3674 | ppr_options = 0; |
| 3675 | ahd_devlimited_syncrate(ahd, tinfo, &period, |
| 3676 | &ppr_options, devinfo->role); |
| 3677 | dowide = tinfo->curr.width != tinfo->goal.width; |
| 3678 | dosync = tinfo->curr.offset != offset || tinfo->curr.period != period; |
| 3679 | /* |
| 3680 | * Only use PPR if we have options that need it, even if the device |
| 3681 | * claims to support it. There might be an expander in the way |
| 3682 | * that doesn't. |
| 3683 | */ |
| 3684 | doppr = ppr_options != 0; |
| 3685 | |
| 3686 | if (!dowide && !dosync && !doppr) { |
| 3687 | dowide = tinfo->goal.width != MSG_EXT_WDTR_BUS_8_BIT; |
| 3688 | dosync = tinfo->goal.offset != 0; |
| 3689 | } |
| 3690 | |
| 3691 | if (!dowide && !dosync && !doppr) { |
| 3692 | /* |
| 3693 | * Force async with a WDTR message if we have a wide bus, |
| 3694 | * or just issue an SDTR with a 0 offset. |
| 3695 | */ |
| 3696 | if ((ahd->features & AHD_WIDE) != 0) |
| 3697 | dowide = 1; |
| 3698 | else |
| 3699 | dosync = 1; |
| 3700 | |
| 3701 | if (bootverbose) { |
| 3702 | ahd_print_devinfo(ahd, devinfo); |
| 3703 | printf("Ensuring async\n"); |
| 3704 | } |
| 3705 | } |
| 3706 | /* Target initiated PPR is not allowed in the SCSI spec */ |
| 3707 | if (devinfo->role == ROLE_TARGET) |
| 3708 | doppr = 0; |
| 3709 | |
| 3710 | /* |
| 3711 | * Both the PPR message and SDTR message require the |
| 3712 | * goal syncrate to be limited to what the target device |
| 3713 | * is capable of handling (based on whether an LVD->SE |
| 3714 | * expander is on the bus), so combine these two cases. |
| 3715 | * Regardless, guarantee that if we are using WDTR and SDTR |
| 3716 | * messages that WDTR comes first. |
| 3717 | */ |
| 3718 | if (doppr || (dosync && !dowide)) { |
| 3719 | |
| 3720 | offset = tinfo->goal.offset; |
| 3721 | ahd_validate_offset(ahd, tinfo, period, &offset, |
| 3722 | doppr ? tinfo->goal.width |
| 3723 | : tinfo->curr.width, |
| 3724 | devinfo->role); |
| 3725 | if (doppr) { |
| 3726 | ahd_construct_ppr(ahd, devinfo, period, offset, |
| 3727 | tinfo->goal.width, ppr_options); |
| 3728 | } else { |
| 3729 | ahd_construct_sdtr(ahd, devinfo, period, offset); |
| 3730 | } |
| 3731 | } else { |
| 3732 | ahd_construct_wdtr(ahd, devinfo, tinfo->goal.width); |
| 3733 | } |
| 3734 | } |
| 3735 | |
| 3736 | /* |
| 3737 | * Build a synchronous negotiation message in our message |
| 3738 | * buffer based on the input parameters. |
| 3739 | */ |
| 3740 | static void |
| 3741 | ahd_construct_sdtr(struct ahd_softc *ahd, struct ahd_devinfo *devinfo, |
| 3742 | u_int period, u_int offset) |
| 3743 | { |
| 3744 | if (offset == 0) |
| 3745 | period = AHD_ASYNC_XFER_PERIOD; |
Matthew Wilcox | 6ea3c0b | 2006-02-07 07:54:46 -0700 | [diff] [blame] | 3746 | ahd->msgout_index += spi_populate_sync_msg( |
| 3747 | ahd->msgout_buf + ahd->msgout_index, period, offset); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3748 | ahd->msgout_len += 5; |
| 3749 | if (bootverbose) { |
| 3750 | printf("(%s:%c:%d:%d): Sending SDTR period %x, offset %x\n", |
| 3751 | ahd_name(ahd), devinfo->channel, devinfo->target, |
| 3752 | devinfo->lun, period, offset); |
| 3753 | } |
| 3754 | } |
| 3755 | |
| 3756 | /* |
| 3757 | * Build a wide negotiateion message in our message |
| 3758 | * buffer based on the input parameters. |
| 3759 | */ |
| 3760 | static void |
| 3761 | ahd_construct_wdtr(struct ahd_softc *ahd, struct ahd_devinfo *devinfo, |
| 3762 | u_int bus_width) |
| 3763 | { |
Matthew Wilcox | 6ea3c0b | 2006-02-07 07:54:46 -0700 | [diff] [blame] | 3764 | ahd->msgout_index += spi_populate_width_msg( |
| 3765 | ahd->msgout_buf + ahd->msgout_index, bus_width); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3766 | ahd->msgout_len += 4; |
| 3767 | if (bootverbose) { |
| 3768 | printf("(%s:%c:%d:%d): Sending WDTR %x\n", |
| 3769 | ahd_name(ahd), devinfo->channel, devinfo->target, |
| 3770 | devinfo->lun, bus_width); |
| 3771 | } |
| 3772 | } |
| 3773 | |
| 3774 | /* |
| 3775 | * Build a parallel protocol request message in our message |
| 3776 | * buffer based on the input parameters. |
| 3777 | */ |
| 3778 | static void |
| 3779 | ahd_construct_ppr(struct ahd_softc *ahd, struct ahd_devinfo *devinfo, |
| 3780 | u_int period, u_int offset, u_int bus_width, |
| 3781 | u_int ppr_options) |
| 3782 | { |
| 3783 | /* |
| 3784 | * Always request precompensation from |
| 3785 | * the other target if we are running |
| 3786 | * at paced syncrates. |
| 3787 | */ |
| 3788 | if (period <= AHD_SYNCRATE_PACED) |
| 3789 | ppr_options |= MSG_EXT_PPR_PCOMP_EN; |
| 3790 | if (offset == 0) |
| 3791 | period = AHD_ASYNC_XFER_PERIOD; |
Matthew Wilcox | 6ea3c0b | 2006-02-07 07:54:46 -0700 | [diff] [blame] | 3792 | ahd->msgout_index += spi_populate_ppr_msg( |
| 3793 | ahd->msgout_buf + ahd->msgout_index, period, offset, |
| 3794 | bus_width, ppr_options); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3795 | ahd->msgout_len += 8; |
| 3796 | if (bootverbose) { |
| 3797 | printf("(%s:%c:%d:%d): Sending PPR bus_width %x, period %x, " |
| 3798 | "offset %x, ppr_options %x\n", ahd_name(ahd), |
| 3799 | devinfo->channel, devinfo->target, devinfo->lun, |
| 3800 | bus_width, period, offset, ppr_options); |
| 3801 | } |
| 3802 | } |
| 3803 | |
| 3804 | /* |
| 3805 | * Clear any active message state. |
| 3806 | */ |
| 3807 | static void |
| 3808 | ahd_clear_msg_state(struct ahd_softc *ahd) |
| 3809 | { |
| 3810 | ahd_mode_state saved_modes; |
| 3811 | |
| 3812 | saved_modes = ahd_save_modes(ahd); |
| 3813 | ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); |
| 3814 | ahd->send_msg_perror = 0; |
| 3815 | ahd->msg_flags = MSG_FLAG_NONE; |
| 3816 | ahd->msgout_len = 0; |
| 3817 | ahd->msgin_index = 0; |
| 3818 | ahd->msg_type = MSG_TYPE_NONE; |
| 3819 | if ((ahd_inb(ahd, SCSISIGO) & ATNO) != 0) { |
| 3820 | /* |
| 3821 | * The target didn't care to respond to our |
| 3822 | * message request, so clear ATN. |
| 3823 | */ |
| 3824 | ahd_outb(ahd, CLRSINT1, CLRATNO); |
| 3825 | } |
| 3826 | ahd_outb(ahd, MSG_OUT, MSG_NOOP); |
| 3827 | ahd_outb(ahd, SEQ_FLAGS2, |
| 3828 | ahd_inb(ahd, SEQ_FLAGS2) & ~TARGET_MSG_PENDING); |
| 3829 | ahd_restore_modes(ahd, saved_modes); |
| 3830 | } |
| 3831 | |
| 3832 | /* |
| 3833 | * Manual message loop handler. |
| 3834 | */ |
| 3835 | static void |
| 3836 | ahd_handle_message_phase(struct ahd_softc *ahd) |
| 3837 | { |
| 3838 | struct ahd_devinfo devinfo; |
| 3839 | u_int bus_phase; |
| 3840 | int end_session; |
| 3841 | |
| 3842 | ahd_fetch_devinfo(ahd, &devinfo); |
| 3843 | end_session = FALSE; |
| 3844 | bus_phase = ahd_inb(ahd, LASTPHASE); |
| 3845 | |
| 3846 | if ((ahd_inb(ahd, LQISTAT2) & LQIPHASE_OUTPKT) != 0) { |
| 3847 | printf("LQIRETRY for LQIPHASE_OUTPKT\n"); |
| 3848 | ahd_outb(ahd, LQCTL2, LQIRETRY); |
| 3849 | } |
| 3850 | reswitch: |
| 3851 | switch (ahd->msg_type) { |
| 3852 | case MSG_TYPE_INITIATOR_MSGOUT: |
| 3853 | { |
| 3854 | int lastbyte; |
| 3855 | int phasemis; |
| 3856 | int msgdone; |
| 3857 | |
| 3858 | if (ahd->msgout_len == 0 && ahd->send_msg_perror == 0) |
| 3859 | panic("HOST_MSG_LOOP interrupt with no active message"); |
| 3860 | |
| 3861 | #ifdef AHD_DEBUG |
| 3862 | if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) { |
| 3863 | ahd_print_devinfo(ahd, &devinfo); |
| 3864 | printf("INITIATOR_MSG_OUT"); |
| 3865 | } |
| 3866 | #endif |
| 3867 | phasemis = bus_phase != P_MESGOUT; |
| 3868 | if (phasemis) { |
| 3869 | #ifdef AHD_DEBUG |
| 3870 | if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) { |
| 3871 | printf(" PHASEMIS %s\n", |
| 3872 | ahd_lookup_phase_entry(bus_phase) |
| 3873 | ->phasemsg); |
| 3874 | } |
| 3875 | #endif |
| 3876 | if (bus_phase == P_MESGIN) { |
| 3877 | /* |
| 3878 | * Change gears and see if |
| 3879 | * this messages is of interest to |
| 3880 | * us or should be passed back to |
| 3881 | * the sequencer. |
| 3882 | */ |
| 3883 | ahd_outb(ahd, CLRSINT1, CLRATNO); |
| 3884 | ahd->send_msg_perror = 0; |
| 3885 | ahd->msg_type = MSG_TYPE_INITIATOR_MSGIN; |
| 3886 | ahd->msgin_index = 0; |
| 3887 | goto reswitch; |
| 3888 | } |
| 3889 | end_session = TRUE; |
| 3890 | break; |
| 3891 | } |
| 3892 | |
| 3893 | if (ahd->send_msg_perror) { |
| 3894 | ahd_outb(ahd, CLRSINT1, CLRATNO); |
| 3895 | ahd_outb(ahd, CLRSINT1, CLRREQINIT); |
| 3896 | #ifdef AHD_DEBUG |
| 3897 | if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) |
| 3898 | printf(" byte 0x%x\n", ahd->send_msg_perror); |
| 3899 | #endif |
| 3900 | /* |
| 3901 | * If we are notifying the target of a CRC error |
| 3902 | * during packetized operations, the target is |
| 3903 | * within its rights to acknowledge our message |
| 3904 | * with a busfree. |
| 3905 | */ |
| 3906 | if ((ahd->msg_flags & MSG_FLAG_PACKETIZED) != 0 |
| 3907 | && ahd->send_msg_perror == MSG_INITIATOR_DET_ERR) |
| 3908 | ahd->msg_flags |= MSG_FLAG_EXPECT_IDE_BUSFREE; |
| 3909 | |
| 3910 | ahd_outb(ahd, RETURN_2, ahd->send_msg_perror); |
| 3911 | ahd_outb(ahd, RETURN_1, CONT_MSG_LOOP_WRITE); |
| 3912 | break; |
| 3913 | } |
| 3914 | |
| 3915 | msgdone = ahd->msgout_index == ahd->msgout_len; |
| 3916 | if (msgdone) { |
| 3917 | /* |
| 3918 | * The target has requested a retry. |
| 3919 | * Re-assert ATN, reset our message index to |
| 3920 | * 0, and try again. |
| 3921 | */ |
| 3922 | ahd->msgout_index = 0; |
| 3923 | ahd_assert_atn(ahd); |
| 3924 | } |
| 3925 | |
| 3926 | lastbyte = ahd->msgout_index == (ahd->msgout_len - 1); |
| 3927 | if (lastbyte) { |
| 3928 | /* Last byte is signified by dropping ATN */ |
| 3929 | ahd_outb(ahd, CLRSINT1, CLRATNO); |
| 3930 | } |
| 3931 | |
| 3932 | /* |
| 3933 | * Clear our interrupt status and present |
| 3934 | * the next byte on the bus. |
| 3935 | */ |
| 3936 | ahd_outb(ahd, CLRSINT1, CLRREQINIT); |
| 3937 | #ifdef AHD_DEBUG |
| 3938 | if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) |
| 3939 | printf(" byte 0x%x\n", |
| 3940 | ahd->msgout_buf[ahd->msgout_index]); |
| 3941 | #endif |
| 3942 | ahd_outb(ahd, RETURN_2, ahd->msgout_buf[ahd->msgout_index++]); |
| 3943 | ahd_outb(ahd, RETURN_1, CONT_MSG_LOOP_WRITE); |
| 3944 | break; |
| 3945 | } |
| 3946 | case MSG_TYPE_INITIATOR_MSGIN: |
| 3947 | { |
| 3948 | int phasemis; |
| 3949 | int message_done; |
| 3950 | |
| 3951 | #ifdef AHD_DEBUG |
| 3952 | if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) { |
| 3953 | ahd_print_devinfo(ahd, &devinfo); |
| 3954 | printf("INITIATOR_MSG_IN"); |
| 3955 | } |
| 3956 | #endif |
| 3957 | phasemis = bus_phase != P_MESGIN; |
| 3958 | if (phasemis) { |
| 3959 | #ifdef AHD_DEBUG |
| 3960 | if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) { |
| 3961 | printf(" PHASEMIS %s\n", |
| 3962 | ahd_lookup_phase_entry(bus_phase) |
| 3963 | ->phasemsg); |
| 3964 | } |
| 3965 | #endif |
| 3966 | ahd->msgin_index = 0; |
| 3967 | if (bus_phase == P_MESGOUT |
| 3968 | && (ahd->send_msg_perror != 0 |
| 3969 | || (ahd->msgout_len != 0 |
| 3970 | && ahd->msgout_index == 0))) { |
| 3971 | ahd->msg_type = MSG_TYPE_INITIATOR_MSGOUT; |
| 3972 | goto reswitch; |
| 3973 | } |
| 3974 | end_session = TRUE; |
| 3975 | break; |
| 3976 | } |
| 3977 | |
| 3978 | /* Pull the byte in without acking it */ |
| 3979 | ahd->msgin_buf[ahd->msgin_index] = ahd_inb(ahd, SCSIBUS); |
| 3980 | #ifdef AHD_DEBUG |
| 3981 | if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) |
| 3982 | printf(" byte 0x%x\n", |
| 3983 | ahd->msgin_buf[ahd->msgin_index]); |
| 3984 | #endif |
| 3985 | |
| 3986 | message_done = ahd_parse_msg(ahd, &devinfo); |
| 3987 | |
| 3988 | if (message_done) { |
| 3989 | /* |
| 3990 | * Clear our incoming message buffer in case there |
| 3991 | * is another message following this one. |
| 3992 | */ |
| 3993 | ahd->msgin_index = 0; |
| 3994 | |
| 3995 | /* |
| 3996 | * If this message illicited a response, |
| 3997 | * assert ATN so the target takes us to the |
| 3998 | * message out phase. |
| 3999 | */ |
| 4000 | if (ahd->msgout_len != 0) { |
| 4001 | #ifdef AHD_DEBUG |
| 4002 | if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) { |
| 4003 | ahd_print_devinfo(ahd, &devinfo); |
| 4004 | printf("Asserting ATN for response\n"); |
| 4005 | } |
| 4006 | #endif |
| 4007 | ahd_assert_atn(ahd); |
| 4008 | } |
| 4009 | } else |
| 4010 | ahd->msgin_index++; |
| 4011 | |
| 4012 | if (message_done == MSGLOOP_TERMINATED) { |
| 4013 | end_session = TRUE; |
| 4014 | } else { |
| 4015 | /* Ack the byte */ |
| 4016 | ahd_outb(ahd, CLRSINT1, CLRREQINIT); |
| 4017 | ahd_outb(ahd, RETURN_1, CONT_MSG_LOOP_READ); |
| 4018 | } |
| 4019 | break; |
| 4020 | } |
| 4021 | case MSG_TYPE_TARGET_MSGIN: |
| 4022 | { |
| 4023 | int msgdone; |
| 4024 | int msgout_request; |
| 4025 | |
| 4026 | /* |
| 4027 | * By default, the message loop will continue. |
| 4028 | */ |
| 4029 | ahd_outb(ahd, RETURN_1, CONT_MSG_LOOP_TARG); |
| 4030 | |
| 4031 | if (ahd->msgout_len == 0) |
| 4032 | panic("Target MSGIN with no active message"); |
| 4033 | |
| 4034 | /* |
| 4035 | * If we interrupted a mesgout session, the initiator |
| 4036 | * will not know this until our first REQ. So, we |
| 4037 | * only honor mesgout requests after we've sent our |
| 4038 | * first byte. |
| 4039 | */ |
| 4040 | if ((ahd_inb(ahd, SCSISIGI) & ATNI) != 0 |
| 4041 | && ahd->msgout_index > 0) |
| 4042 | msgout_request = TRUE; |
| 4043 | else |
| 4044 | msgout_request = FALSE; |
| 4045 | |
| 4046 | if (msgout_request) { |
| 4047 | |
| 4048 | /* |
| 4049 | * Change gears and see if |
| 4050 | * this messages is of interest to |
| 4051 | * us or should be passed back to |
| 4052 | * the sequencer. |
| 4053 | */ |
| 4054 | ahd->msg_type = MSG_TYPE_TARGET_MSGOUT; |
| 4055 | ahd_outb(ahd, SCSISIGO, P_MESGOUT | BSYO); |
| 4056 | ahd->msgin_index = 0; |
| 4057 | /* Dummy read to REQ for first byte */ |
| 4058 | ahd_inb(ahd, SCSIDAT); |
| 4059 | ahd_outb(ahd, SXFRCTL0, |
| 4060 | ahd_inb(ahd, SXFRCTL0) | SPIOEN); |
| 4061 | break; |
| 4062 | } |
| 4063 | |
| 4064 | msgdone = ahd->msgout_index == ahd->msgout_len; |
| 4065 | if (msgdone) { |
| 4066 | ahd_outb(ahd, SXFRCTL0, |
| 4067 | ahd_inb(ahd, SXFRCTL0) & ~SPIOEN); |
| 4068 | end_session = TRUE; |
| 4069 | break; |
| 4070 | } |
| 4071 | |
| 4072 | /* |
| 4073 | * Present the next byte on the bus. |
| 4074 | */ |
| 4075 | ahd_outb(ahd, SXFRCTL0, ahd_inb(ahd, SXFRCTL0) | SPIOEN); |
| 4076 | ahd_outb(ahd, SCSIDAT, ahd->msgout_buf[ahd->msgout_index++]); |
| 4077 | break; |
| 4078 | } |
| 4079 | case MSG_TYPE_TARGET_MSGOUT: |
| 4080 | { |
| 4081 | int lastbyte; |
| 4082 | int msgdone; |
| 4083 | |
| 4084 | /* |
| 4085 | * By default, the message loop will continue. |
| 4086 | */ |
| 4087 | ahd_outb(ahd, RETURN_1, CONT_MSG_LOOP_TARG); |
| 4088 | |
| 4089 | /* |
| 4090 | * The initiator signals that this is |
| 4091 | * the last byte by dropping ATN. |
| 4092 | */ |
| 4093 | lastbyte = (ahd_inb(ahd, SCSISIGI) & ATNI) == 0; |
| 4094 | |
| 4095 | /* |
| 4096 | * Read the latched byte, but turn off SPIOEN first |
| 4097 | * so that we don't inadvertently cause a REQ for the |
| 4098 | * next byte. |
| 4099 | */ |
| 4100 | ahd_outb(ahd, SXFRCTL0, ahd_inb(ahd, SXFRCTL0) & ~SPIOEN); |
| 4101 | ahd->msgin_buf[ahd->msgin_index] = ahd_inb(ahd, SCSIDAT); |
| 4102 | msgdone = ahd_parse_msg(ahd, &devinfo); |
| 4103 | if (msgdone == MSGLOOP_TERMINATED) { |
| 4104 | /* |
| 4105 | * The message is *really* done in that it caused |
| 4106 | * us to go to bus free. The sequencer has already |
| 4107 | * been reset at this point, so pull the ejection |
| 4108 | * handle. |
| 4109 | */ |
| 4110 | return; |
| 4111 | } |
| 4112 | |
| 4113 | ahd->msgin_index++; |
| 4114 | |
| 4115 | /* |
| 4116 | * XXX Read spec about initiator dropping ATN too soon |
| 4117 | * and use msgdone to detect it. |
| 4118 | */ |
| 4119 | if (msgdone == MSGLOOP_MSGCOMPLETE) { |
| 4120 | ahd->msgin_index = 0; |
| 4121 | |
| 4122 | /* |
| 4123 | * If this message illicited a response, transition |
| 4124 | * to the Message in phase and send it. |
| 4125 | */ |
| 4126 | if (ahd->msgout_len != 0) { |
| 4127 | ahd_outb(ahd, SCSISIGO, P_MESGIN | BSYO); |
| 4128 | ahd_outb(ahd, SXFRCTL0, |
| 4129 | ahd_inb(ahd, SXFRCTL0) | SPIOEN); |
| 4130 | ahd->msg_type = MSG_TYPE_TARGET_MSGIN; |
| 4131 | ahd->msgin_index = 0; |
| 4132 | break; |
| 4133 | } |
| 4134 | } |
| 4135 | |
| 4136 | if (lastbyte) |
| 4137 | end_session = TRUE; |
| 4138 | else { |
| 4139 | /* Ask for the next byte. */ |
| 4140 | ahd_outb(ahd, SXFRCTL0, |
| 4141 | ahd_inb(ahd, SXFRCTL0) | SPIOEN); |
| 4142 | } |
| 4143 | |
| 4144 | break; |
| 4145 | } |
| 4146 | default: |
| 4147 | panic("Unknown REQINIT message type"); |
| 4148 | } |
| 4149 | |
| 4150 | if (end_session) { |
| 4151 | if ((ahd->msg_flags & MSG_FLAG_PACKETIZED) != 0) { |
| 4152 | printf("%s: Returning to Idle Loop\n", |
| 4153 | ahd_name(ahd)); |
| 4154 | ahd_clear_msg_state(ahd); |
| 4155 | |
| 4156 | /* |
| 4157 | * Perform the equivalent of a clear_target_state. |
| 4158 | */ |
| 4159 | ahd_outb(ahd, LASTPHASE, P_BUSFREE); |
| 4160 | ahd_outb(ahd, SEQ_FLAGS, NOT_IDENTIFIED|NO_CDB_SENT); |
| 4161 | ahd_outb(ahd, SEQCTL0, FASTMODE|SEQRESET); |
| 4162 | } else { |
| 4163 | ahd_clear_msg_state(ahd); |
| 4164 | ahd_outb(ahd, RETURN_1, EXIT_MSG_LOOP); |
| 4165 | } |
| 4166 | } |
| 4167 | } |
| 4168 | |
| 4169 | /* |
| 4170 | * See if we sent a particular extended message to the target. |
| 4171 | * If "full" is true, return true only if the target saw the full |
| 4172 | * message. If "full" is false, return true if the target saw at |
| 4173 | * least the first byte of the message. |
| 4174 | */ |
| 4175 | static int |
| 4176 | ahd_sent_msg(struct ahd_softc *ahd, ahd_msgtype type, u_int msgval, int full) |
| 4177 | { |
| 4178 | int found; |
| 4179 | u_int index; |
| 4180 | |
| 4181 | found = FALSE; |
| 4182 | index = 0; |
| 4183 | |
| 4184 | while (index < ahd->msgout_len) { |
| 4185 | if (ahd->msgout_buf[index] == MSG_EXTENDED) { |
| 4186 | u_int end_index; |
| 4187 | |
| 4188 | end_index = index + 1 + ahd->msgout_buf[index + 1]; |
| 4189 | if (ahd->msgout_buf[index+2] == msgval |
| 4190 | && type == AHDMSG_EXT) { |
| 4191 | |
| 4192 | if (full) { |
| 4193 | if (ahd->msgout_index > end_index) |
| 4194 | found = TRUE; |
| 4195 | } else if (ahd->msgout_index > index) |
| 4196 | found = TRUE; |
| 4197 | } |
| 4198 | index = end_index; |
| 4199 | } else if (ahd->msgout_buf[index] >= MSG_SIMPLE_TASK |
| 4200 | && ahd->msgout_buf[index] <= MSG_IGN_WIDE_RESIDUE) { |
| 4201 | |
| 4202 | /* Skip tag type and tag id or residue param*/ |
| 4203 | index += 2; |
| 4204 | } else { |
| 4205 | /* Single byte message */ |
| 4206 | if (type == AHDMSG_1B |
| 4207 | && ahd->msgout_index > index |
| 4208 | && (ahd->msgout_buf[index] == msgval |
| 4209 | || ((ahd->msgout_buf[index] & MSG_IDENTIFYFLAG) != 0 |
| 4210 | && msgval == MSG_IDENTIFYFLAG))) |
| 4211 | found = TRUE; |
| 4212 | index++; |
| 4213 | } |
| 4214 | |
| 4215 | if (found) |
| 4216 | break; |
| 4217 | } |
| 4218 | return (found); |
| 4219 | } |
| 4220 | |
| 4221 | /* |
| 4222 | * Wait for a complete incoming message, parse it, and respond accordingly. |
| 4223 | */ |
| 4224 | static int |
| 4225 | ahd_parse_msg(struct ahd_softc *ahd, struct ahd_devinfo *devinfo) |
| 4226 | { |
| 4227 | struct ahd_initiator_tinfo *tinfo; |
| 4228 | struct ahd_tmode_tstate *tstate; |
| 4229 | int reject; |
| 4230 | int done; |
| 4231 | int response; |
| 4232 | |
| 4233 | done = MSGLOOP_IN_PROG; |
| 4234 | response = FALSE; |
| 4235 | reject = FALSE; |
| 4236 | tinfo = ahd_fetch_transinfo(ahd, devinfo->channel, devinfo->our_scsiid, |
| 4237 | devinfo->target, &tstate); |
| 4238 | |
| 4239 | /* |
| 4240 | * Parse as much of the message as is available, |
| 4241 | * rejecting it if we don't support it. When |
| 4242 | * the entire message is available and has been |
| 4243 | * handled, return MSGLOOP_MSGCOMPLETE, indicating |
| 4244 | * that we have parsed an entire message. |
| 4245 | * |
| 4246 | * In the case of extended messages, we accept the length |
| 4247 | * byte outright and perform more checking once we know the |
| 4248 | * extended message type. |
| 4249 | */ |
| 4250 | switch (ahd->msgin_buf[0]) { |
| 4251 | case MSG_DISCONNECT: |
| 4252 | case MSG_SAVEDATAPOINTER: |
| 4253 | case MSG_CMDCOMPLETE: |
| 4254 | case MSG_RESTOREPOINTERS: |
| 4255 | case MSG_IGN_WIDE_RESIDUE: |
| 4256 | /* |
| 4257 | * End our message loop as these are messages |
| 4258 | * the sequencer handles on its own. |
| 4259 | */ |
| 4260 | done = MSGLOOP_TERMINATED; |
| 4261 | break; |
| 4262 | case MSG_MESSAGE_REJECT: |
| 4263 | response = ahd_handle_msg_reject(ahd, devinfo); |
| 4264 | /* FALLTHROUGH */ |
| 4265 | case MSG_NOOP: |
| 4266 | done = MSGLOOP_MSGCOMPLETE; |
| 4267 | break; |
| 4268 | case MSG_EXTENDED: |
| 4269 | { |
| 4270 | /* Wait for enough of the message to begin validation */ |
| 4271 | if (ahd->msgin_index < 2) |
| 4272 | break; |
| 4273 | switch (ahd->msgin_buf[2]) { |
| 4274 | case MSG_EXT_SDTR: |
| 4275 | { |
| 4276 | u_int period; |
| 4277 | u_int ppr_options; |
| 4278 | u_int offset; |
| 4279 | u_int saved_offset; |
| 4280 | |
| 4281 | if (ahd->msgin_buf[1] != MSG_EXT_SDTR_LEN) { |
| 4282 | reject = TRUE; |
| 4283 | break; |
| 4284 | } |
| 4285 | |
| 4286 | /* |
| 4287 | * Wait until we have both args before validating |
| 4288 | * and acting on this message. |
| 4289 | * |
| 4290 | * Add one to MSG_EXT_SDTR_LEN to account for |
| 4291 | * the extended message preamble. |
| 4292 | */ |
| 4293 | if (ahd->msgin_index < (MSG_EXT_SDTR_LEN + 1)) |
| 4294 | break; |
| 4295 | |
| 4296 | period = ahd->msgin_buf[3]; |
| 4297 | ppr_options = 0; |
| 4298 | saved_offset = offset = ahd->msgin_buf[4]; |
| 4299 | ahd_devlimited_syncrate(ahd, tinfo, &period, |
| 4300 | &ppr_options, devinfo->role); |
| 4301 | ahd_validate_offset(ahd, tinfo, period, &offset, |
| 4302 | tinfo->curr.width, devinfo->role); |
| 4303 | if (bootverbose) { |
| 4304 | printf("(%s:%c:%d:%d): Received " |
| 4305 | "SDTR period %x, offset %x\n\t" |
| 4306 | "Filtered to period %x, offset %x\n", |
| 4307 | ahd_name(ahd), devinfo->channel, |
| 4308 | devinfo->target, devinfo->lun, |
| 4309 | ahd->msgin_buf[3], saved_offset, |
| 4310 | period, offset); |
| 4311 | } |
| 4312 | ahd_set_syncrate(ahd, devinfo, period, |
| 4313 | offset, ppr_options, |
| 4314 | AHD_TRANS_ACTIVE|AHD_TRANS_GOAL, |
| 4315 | /*paused*/TRUE); |
| 4316 | |
| 4317 | /* |
| 4318 | * See if we initiated Sync Negotiation |
| 4319 | * and didn't have to fall down to async |
| 4320 | * transfers. |
| 4321 | */ |
| 4322 | if (ahd_sent_msg(ahd, AHDMSG_EXT, MSG_EXT_SDTR, TRUE)) { |
| 4323 | /* We started it */ |
| 4324 | if (saved_offset != offset) { |
| 4325 | /* Went too low - force async */ |
| 4326 | reject = TRUE; |
| 4327 | } |
| 4328 | } else { |
| 4329 | /* |
| 4330 | * Send our own SDTR in reply |
| 4331 | */ |
| 4332 | if (bootverbose |
| 4333 | && devinfo->role == ROLE_INITIATOR) { |
| 4334 | printf("(%s:%c:%d:%d): Target " |
| 4335 | "Initiated SDTR\n", |
| 4336 | ahd_name(ahd), devinfo->channel, |
| 4337 | devinfo->target, devinfo->lun); |
| 4338 | } |
| 4339 | ahd->msgout_index = 0; |
| 4340 | ahd->msgout_len = 0; |
| 4341 | ahd_construct_sdtr(ahd, devinfo, |
| 4342 | period, offset); |
| 4343 | ahd->msgout_index = 0; |
| 4344 | response = TRUE; |
| 4345 | } |
| 4346 | done = MSGLOOP_MSGCOMPLETE; |
| 4347 | break; |
| 4348 | } |
| 4349 | case MSG_EXT_WDTR: |
| 4350 | { |
| 4351 | u_int bus_width; |
| 4352 | u_int saved_width; |
| 4353 | u_int sending_reply; |
| 4354 | |
| 4355 | sending_reply = FALSE; |
| 4356 | if (ahd->msgin_buf[1] != MSG_EXT_WDTR_LEN) { |
| 4357 | reject = TRUE; |
| 4358 | break; |
| 4359 | } |
| 4360 | |
| 4361 | /* |
| 4362 | * Wait until we have our arg before validating |
| 4363 | * and acting on this message. |
| 4364 | * |
| 4365 | * Add one to MSG_EXT_WDTR_LEN to account for |
| 4366 | * the extended message preamble. |
| 4367 | */ |
| 4368 | if (ahd->msgin_index < (MSG_EXT_WDTR_LEN + 1)) |
| 4369 | break; |
| 4370 | |
| 4371 | bus_width = ahd->msgin_buf[3]; |
| 4372 | saved_width = bus_width; |
| 4373 | ahd_validate_width(ahd, tinfo, &bus_width, |
| 4374 | devinfo->role); |
| 4375 | if (bootverbose) { |
| 4376 | printf("(%s:%c:%d:%d): Received WDTR " |
| 4377 | "%x filtered to %x\n", |
| 4378 | ahd_name(ahd), devinfo->channel, |
| 4379 | devinfo->target, devinfo->lun, |
| 4380 | saved_width, bus_width); |
| 4381 | } |
| 4382 | |
| 4383 | if (ahd_sent_msg(ahd, AHDMSG_EXT, MSG_EXT_WDTR, TRUE)) { |
| 4384 | /* |
| 4385 | * Don't send a WDTR back to the |
| 4386 | * target, since we asked first. |
| 4387 | * If the width went higher than our |
| 4388 | * request, reject it. |
| 4389 | */ |
| 4390 | if (saved_width > bus_width) { |
| 4391 | reject = TRUE; |
| 4392 | printf("(%s:%c:%d:%d): requested %dBit " |
| 4393 | "transfers. Rejecting...\n", |
| 4394 | ahd_name(ahd), devinfo->channel, |
| 4395 | devinfo->target, devinfo->lun, |
| 4396 | 8 * (0x01 << bus_width)); |
| 4397 | bus_width = 0; |
| 4398 | } |
| 4399 | } else { |
| 4400 | /* |
| 4401 | * Send our own WDTR in reply |
| 4402 | */ |
| 4403 | if (bootverbose |
| 4404 | && devinfo->role == ROLE_INITIATOR) { |
| 4405 | printf("(%s:%c:%d:%d): Target " |
| 4406 | "Initiated WDTR\n", |
| 4407 | ahd_name(ahd), devinfo->channel, |
| 4408 | devinfo->target, devinfo->lun); |
| 4409 | } |
| 4410 | ahd->msgout_index = 0; |
| 4411 | ahd->msgout_len = 0; |
| 4412 | ahd_construct_wdtr(ahd, devinfo, bus_width); |
| 4413 | ahd->msgout_index = 0; |
| 4414 | response = TRUE; |
| 4415 | sending_reply = TRUE; |
| 4416 | } |
| 4417 | /* |
| 4418 | * After a wide message, we are async, but |
| 4419 | * some devices don't seem to honor this portion |
| 4420 | * of the spec. Force a renegotiation of the |
| 4421 | * sync component of our transfer agreement even |
| 4422 | * if our goal is async. By updating our width |
| 4423 | * after forcing the negotiation, we avoid |
| 4424 | * renegotiating for width. |
| 4425 | */ |
| 4426 | ahd_update_neg_request(ahd, devinfo, tstate, |
| 4427 | tinfo, AHD_NEG_ALWAYS); |
| 4428 | ahd_set_width(ahd, devinfo, bus_width, |
| 4429 | AHD_TRANS_ACTIVE|AHD_TRANS_GOAL, |
| 4430 | /*paused*/TRUE); |
| 4431 | if (sending_reply == FALSE && reject == FALSE) { |
| 4432 | |
| 4433 | /* |
| 4434 | * We will always have an SDTR to send. |
| 4435 | */ |
| 4436 | ahd->msgout_index = 0; |
| 4437 | ahd->msgout_len = 0; |
| 4438 | ahd_build_transfer_msg(ahd, devinfo); |
| 4439 | ahd->msgout_index = 0; |
| 4440 | response = TRUE; |
| 4441 | } |
| 4442 | done = MSGLOOP_MSGCOMPLETE; |
| 4443 | break; |
| 4444 | } |
| 4445 | case MSG_EXT_PPR: |
| 4446 | { |
| 4447 | u_int period; |
| 4448 | u_int offset; |
| 4449 | u_int bus_width; |
| 4450 | u_int ppr_options; |
| 4451 | u_int saved_width; |
| 4452 | u_int saved_offset; |
| 4453 | u_int saved_ppr_options; |
| 4454 | |
| 4455 | if (ahd->msgin_buf[1] != MSG_EXT_PPR_LEN) { |
| 4456 | reject = TRUE; |
| 4457 | break; |
| 4458 | } |
| 4459 | |
| 4460 | /* |
| 4461 | * Wait until we have all args before validating |
| 4462 | * and acting on this message. |
| 4463 | * |
| 4464 | * Add one to MSG_EXT_PPR_LEN to account for |
| 4465 | * the extended message preamble. |
| 4466 | */ |
| 4467 | if (ahd->msgin_index < (MSG_EXT_PPR_LEN + 1)) |
| 4468 | break; |
| 4469 | |
| 4470 | period = ahd->msgin_buf[3]; |
| 4471 | offset = ahd->msgin_buf[5]; |
| 4472 | bus_width = ahd->msgin_buf[6]; |
| 4473 | saved_width = bus_width; |
| 4474 | ppr_options = ahd->msgin_buf[7]; |
| 4475 | /* |
| 4476 | * According to the spec, a DT only |
| 4477 | * period factor with no DT option |
| 4478 | * set implies async. |
| 4479 | */ |
| 4480 | if ((ppr_options & MSG_EXT_PPR_DT_REQ) == 0 |
| 4481 | && period <= 9) |
| 4482 | offset = 0; |
| 4483 | saved_ppr_options = ppr_options; |
| 4484 | saved_offset = offset; |
| 4485 | |
| 4486 | /* |
| 4487 | * Transfer options are only available if we |
| 4488 | * are negotiating wide. |
| 4489 | */ |
| 4490 | if (bus_width == 0) |
| 4491 | ppr_options &= MSG_EXT_PPR_QAS_REQ; |
| 4492 | |
| 4493 | ahd_validate_width(ahd, tinfo, &bus_width, |
| 4494 | devinfo->role); |
| 4495 | ahd_devlimited_syncrate(ahd, tinfo, &period, |
| 4496 | &ppr_options, devinfo->role); |
| 4497 | ahd_validate_offset(ahd, tinfo, period, &offset, |
| 4498 | bus_width, devinfo->role); |
| 4499 | |
| 4500 | if (ahd_sent_msg(ahd, AHDMSG_EXT, MSG_EXT_PPR, TRUE)) { |
| 4501 | /* |
| 4502 | * If we are unable to do any of the |
| 4503 | * requested options (we went too low), |
| 4504 | * then we'll have to reject the message. |
| 4505 | */ |
| 4506 | if (saved_width > bus_width |
| 4507 | || saved_offset != offset |
| 4508 | || saved_ppr_options != ppr_options) { |
| 4509 | reject = TRUE; |
| 4510 | period = 0; |
| 4511 | offset = 0; |
| 4512 | bus_width = 0; |
| 4513 | ppr_options = 0; |
| 4514 | } |
| 4515 | } else { |
| 4516 | if (devinfo->role != ROLE_TARGET) |
| 4517 | printf("(%s:%c:%d:%d): Target " |
| 4518 | "Initiated PPR\n", |
| 4519 | ahd_name(ahd), devinfo->channel, |
| 4520 | devinfo->target, devinfo->lun); |
| 4521 | else |
| 4522 | printf("(%s:%c:%d:%d): Initiator " |
| 4523 | "Initiated PPR\n", |
| 4524 | ahd_name(ahd), devinfo->channel, |
| 4525 | devinfo->target, devinfo->lun); |
| 4526 | ahd->msgout_index = 0; |
| 4527 | ahd->msgout_len = 0; |
| 4528 | ahd_construct_ppr(ahd, devinfo, period, offset, |
| 4529 | bus_width, ppr_options); |
| 4530 | ahd->msgout_index = 0; |
| 4531 | response = TRUE; |
| 4532 | } |
| 4533 | if (bootverbose) { |
| 4534 | printf("(%s:%c:%d:%d): Received PPR width %x, " |
| 4535 | "period %x, offset %x,options %x\n" |
| 4536 | "\tFiltered to width %x, period %x, " |
| 4537 | "offset %x, options %x\n", |
| 4538 | ahd_name(ahd), devinfo->channel, |
| 4539 | devinfo->target, devinfo->lun, |
| 4540 | saved_width, ahd->msgin_buf[3], |
| 4541 | saved_offset, saved_ppr_options, |
| 4542 | bus_width, period, offset, ppr_options); |
| 4543 | } |
| 4544 | ahd_set_width(ahd, devinfo, bus_width, |
| 4545 | AHD_TRANS_ACTIVE|AHD_TRANS_GOAL, |
| 4546 | /*paused*/TRUE); |
| 4547 | ahd_set_syncrate(ahd, devinfo, period, |
| 4548 | offset, ppr_options, |
| 4549 | AHD_TRANS_ACTIVE|AHD_TRANS_GOAL, |
| 4550 | /*paused*/TRUE); |
| 4551 | |
| 4552 | done = MSGLOOP_MSGCOMPLETE; |
| 4553 | break; |
| 4554 | } |
| 4555 | default: |
| 4556 | /* Unknown extended message. Reject it. */ |
| 4557 | reject = TRUE; |
| 4558 | break; |
| 4559 | } |
| 4560 | break; |
| 4561 | } |
| 4562 | #ifdef AHD_TARGET_MODE |
| 4563 | case MSG_BUS_DEV_RESET: |
| 4564 | ahd_handle_devreset(ahd, devinfo, CAM_LUN_WILDCARD, |
| 4565 | CAM_BDR_SENT, |
| 4566 | "Bus Device Reset Received", |
| 4567 | /*verbose_level*/0); |
| 4568 | ahd_restart(ahd); |
| 4569 | done = MSGLOOP_TERMINATED; |
| 4570 | break; |
| 4571 | case MSG_ABORT_TAG: |
| 4572 | case MSG_ABORT: |
| 4573 | case MSG_CLEAR_QUEUE: |
| 4574 | { |
| 4575 | int tag; |
| 4576 | |
| 4577 | /* Target mode messages */ |
| 4578 | if (devinfo->role != ROLE_TARGET) { |
| 4579 | reject = TRUE; |
| 4580 | break; |
| 4581 | } |
| 4582 | tag = SCB_LIST_NULL; |
| 4583 | if (ahd->msgin_buf[0] == MSG_ABORT_TAG) |
| 4584 | tag = ahd_inb(ahd, INITIATOR_TAG); |
| 4585 | ahd_abort_scbs(ahd, devinfo->target, devinfo->channel, |
| 4586 | devinfo->lun, tag, ROLE_TARGET, |
| 4587 | CAM_REQ_ABORTED); |
| 4588 | |
| 4589 | tstate = ahd->enabled_targets[devinfo->our_scsiid]; |
| 4590 | if (tstate != NULL) { |
| 4591 | struct ahd_tmode_lstate* lstate; |
| 4592 | |
| 4593 | lstate = tstate->enabled_luns[devinfo->lun]; |
| 4594 | if (lstate != NULL) { |
| 4595 | ahd_queue_lstate_event(ahd, lstate, |
| 4596 | devinfo->our_scsiid, |
| 4597 | ahd->msgin_buf[0], |
| 4598 | /*arg*/tag); |
| 4599 | ahd_send_lstate_events(ahd, lstate); |
| 4600 | } |
| 4601 | } |
| 4602 | ahd_restart(ahd); |
| 4603 | done = MSGLOOP_TERMINATED; |
| 4604 | break; |
| 4605 | } |
| 4606 | #endif |
| 4607 | case MSG_QAS_REQUEST: |
| 4608 | #ifdef AHD_DEBUG |
| 4609 | if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) |
| 4610 | printf("%s: QAS request. SCSISIGI == 0x%x\n", |
| 4611 | ahd_name(ahd), ahd_inb(ahd, SCSISIGI)); |
| 4612 | #endif |
| 4613 | ahd->msg_flags |= MSG_FLAG_EXPECT_QASREJ_BUSFREE; |
| 4614 | /* FALLTHROUGH */ |
| 4615 | case MSG_TERM_IO_PROC: |
| 4616 | default: |
| 4617 | reject = TRUE; |
| 4618 | break; |
| 4619 | } |
| 4620 | |
| 4621 | if (reject) { |
| 4622 | /* |
| 4623 | * Setup to reject the message. |
| 4624 | */ |
| 4625 | ahd->msgout_index = 0; |
| 4626 | ahd->msgout_len = 1; |
| 4627 | ahd->msgout_buf[0] = MSG_MESSAGE_REJECT; |
| 4628 | done = MSGLOOP_MSGCOMPLETE; |
| 4629 | response = TRUE; |
| 4630 | } |
| 4631 | |
| 4632 | if (done != MSGLOOP_IN_PROG && !response) |
| 4633 | /* Clear the outgoing message buffer */ |
| 4634 | ahd->msgout_len = 0; |
| 4635 | |
| 4636 | return (done); |
| 4637 | } |
| 4638 | |
| 4639 | /* |
| 4640 | * Process a message reject message. |
| 4641 | */ |
| 4642 | static int |
| 4643 | ahd_handle_msg_reject(struct ahd_softc *ahd, struct ahd_devinfo *devinfo) |
| 4644 | { |
| 4645 | /* |
| 4646 | * What we care about here is if we had an |
| 4647 | * outstanding SDTR or WDTR message for this |
| 4648 | * target. If we did, this is a signal that |
| 4649 | * the target is refusing negotiation. |
| 4650 | */ |
| 4651 | struct scb *scb; |
| 4652 | struct ahd_initiator_tinfo *tinfo; |
| 4653 | struct ahd_tmode_tstate *tstate; |
| 4654 | u_int scb_index; |
| 4655 | u_int last_msg; |
| 4656 | int response = 0; |
| 4657 | |
| 4658 | scb_index = ahd_get_scbptr(ahd); |
| 4659 | scb = ahd_lookup_scb(ahd, scb_index); |
| 4660 | tinfo = ahd_fetch_transinfo(ahd, devinfo->channel, |
| 4661 | devinfo->our_scsiid, |
| 4662 | devinfo->target, &tstate); |
| 4663 | /* Might be necessary */ |
| 4664 | last_msg = ahd_inb(ahd, LAST_MSG); |
| 4665 | |
| 4666 | if (ahd_sent_msg(ahd, AHDMSG_EXT, MSG_EXT_PPR, /*full*/FALSE)) { |
| 4667 | if (ahd_sent_msg(ahd, AHDMSG_EXT, MSG_EXT_PPR, /*full*/TRUE) |
| 4668 | && tinfo->goal.period <= AHD_SYNCRATE_PACED) { |
| 4669 | /* |
| 4670 | * Target may not like our SPI-4 PPR Options. |
| 4671 | * Attempt to negotiate 80MHz which will turn |
| 4672 | * off these options. |
| 4673 | */ |
| 4674 | if (bootverbose) { |
| 4675 | printf("(%s:%c:%d:%d): PPR Rejected. " |
| 4676 | "Trying simple U160 PPR\n", |
| 4677 | ahd_name(ahd), devinfo->channel, |
| 4678 | devinfo->target, devinfo->lun); |
| 4679 | } |
| 4680 | tinfo->goal.period = AHD_SYNCRATE_DT; |
| 4681 | tinfo->goal.ppr_options &= MSG_EXT_PPR_IU_REQ |
| 4682 | | MSG_EXT_PPR_QAS_REQ |
| 4683 | | MSG_EXT_PPR_DT_REQ; |
| 4684 | } else { |
| 4685 | /* |
| 4686 | * Target does not support the PPR message. |
| 4687 | * Attempt to negotiate SPI-2 style. |
| 4688 | */ |
| 4689 | if (bootverbose) { |
| 4690 | printf("(%s:%c:%d:%d): PPR Rejected. " |
| 4691 | "Trying WDTR/SDTR\n", |
| 4692 | ahd_name(ahd), devinfo->channel, |
| 4693 | devinfo->target, devinfo->lun); |
| 4694 | } |
| 4695 | tinfo->goal.ppr_options = 0; |
| 4696 | tinfo->curr.transport_version = 2; |
| 4697 | tinfo->goal.transport_version = 2; |
| 4698 | } |
| 4699 | ahd->msgout_index = 0; |
| 4700 | ahd->msgout_len = 0; |
| 4701 | ahd_build_transfer_msg(ahd, devinfo); |
| 4702 | ahd->msgout_index = 0; |
| 4703 | response = 1; |
| 4704 | } else if (ahd_sent_msg(ahd, AHDMSG_EXT, MSG_EXT_WDTR, /*full*/FALSE)) { |
| 4705 | |
| 4706 | /* note 8bit xfers */ |
| 4707 | printf("(%s:%c:%d:%d): refuses WIDE negotiation. Using " |
| 4708 | "8bit transfers\n", ahd_name(ahd), |
| 4709 | devinfo->channel, devinfo->target, devinfo->lun); |
| 4710 | ahd_set_width(ahd, devinfo, MSG_EXT_WDTR_BUS_8_BIT, |
| 4711 | AHD_TRANS_ACTIVE|AHD_TRANS_GOAL, |
| 4712 | /*paused*/TRUE); |
| 4713 | /* |
| 4714 | * No need to clear the sync rate. If the target |
| 4715 | * did not accept the command, our syncrate is |
| 4716 | * unaffected. If the target started the negotiation, |
| 4717 | * but rejected our response, we already cleared the |
| 4718 | * sync rate before sending our WDTR. |
| 4719 | */ |
| 4720 | if (tinfo->goal.offset != tinfo->curr.offset) { |
| 4721 | |
| 4722 | /* Start the sync negotiation */ |
| 4723 | ahd->msgout_index = 0; |
| 4724 | ahd->msgout_len = 0; |
| 4725 | ahd_build_transfer_msg(ahd, devinfo); |
| 4726 | ahd->msgout_index = 0; |
| 4727 | response = 1; |
| 4728 | } |
| 4729 | } else if (ahd_sent_msg(ahd, AHDMSG_EXT, MSG_EXT_SDTR, /*full*/FALSE)) { |
| 4730 | /* note asynch xfers and clear flag */ |
| 4731 | ahd_set_syncrate(ahd, devinfo, /*period*/0, |
| 4732 | /*offset*/0, /*ppr_options*/0, |
| 4733 | AHD_TRANS_ACTIVE|AHD_TRANS_GOAL, |
| 4734 | /*paused*/TRUE); |
| 4735 | printf("(%s:%c:%d:%d): refuses synchronous negotiation. " |
| 4736 | "Using asynchronous transfers\n", |
| 4737 | ahd_name(ahd), devinfo->channel, |
| 4738 | devinfo->target, devinfo->lun); |
| 4739 | } else if ((scb->hscb->control & MSG_SIMPLE_TASK) != 0) { |
| 4740 | int tag_type; |
| 4741 | int mask; |
| 4742 | |
| 4743 | tag_type = (scb->hscb->control & MSG_SIMPLE_TASK); |
| 4744 | |
| 4745 | if (tag_type == MSG_SIMPLE_TASK) { |
| 4746 | printf("(%s:%c:%d:%d): refuses tagged commands. " |
| 4747 | "Performing non-tagged I/O\n", ahd_name(ahd), |
| 4748 | devinfo->channel, devinfo->target, devinfo->lun); |
| 4749 | ahd_set_tags(ahd, devinfo, AHD_QUEUE_NONE); |
| 4750 | mask = ~0x23; |
| 4751 | } else { |
| 4752 | printf("(%s:%c:%d:%d): refuses %s tagged commands. " |
| 4753 | "Performing simple queue tagged I/O only\n", |
| 4754 | ahd_name(ahd), devinfo->channel, devinfo->target, |
| 4755 | devinfo->lun, tag_type == MSG_ORDERED_TASK |
| 4756 | ? "ordered" : "head of queue"); |
| 4757 | ahd_set_tags(ahd, devinfo, AHD_QUEUE_BASIC); |
| 4758 | mask = ~0x03; |
| 4759 | } |
| 4760 | |
| 4761 | /* |
| 4762 | * Resend the identify for this CCB as the target |
| 4763 | * may believe that the selection is invalid otherwise. |
| 4764 | */ |
| 4765 | ahd_outb(ahd, SCB_CONTROL, |
| 4766 | ahd_inb_scbram(ahd, SCB_CONTROL) & mask); |
| 4767 | scb->hscb->control &= mask; |
| 4768 | ahd_set_transaction_tag(scb, /*enabled*/FALSE, |
| 4769 | /*type*/MSG_SIMPLE_TASK); |
| 4770 | ahd_outb(ahd, MSG_OUT, MSG_IDENTIFYFLAG); |
| 4771 | ahd_assert_atn(ahd); |
| 4772 | ahd_busy_tcl(ahd, BUILD_TCL(scb->hscb->scsiid, devinfo->lun), |
| 4773 | SCB_GET_TAG(scb)); |
| 4774 | |
| 4775 | /* |
| 4776 | * Requeue all tagged commands for this target |
| 4777 | * currently in our posession so they can be |
| 4778 | * converted to untagged commands. |
| 4779 | */ |
| 4780 | ahd_search_qinfifo(ahd, SCB_GET_TARGET(ahd, scb), |
| 4781 | SCB_GET_CHANNEL(ahd, scb), |
| 4782 | SCB_GET_LUN(scb), /*tag*/SCB_LIST_NULL, |
| 4783 | ROLE_INITIATOR, CAM_REQUEUE_REQ, |
| 4784 | SEARCH_COMPLETE); |
| 4785 | } else if (ahd_sent_msg(ahd, AHDMSG_1B, MSG_IDENTIFYFLAG, TRUE)) { |
| 4786 | /* |
| 4787 | * Most likely the device believes that we had |
| 4788 | * previously negotiated packetized. |
| 4789 | */ |
| 4790 | ahd->msg_flags |= MSG_FLAG_EXPECT_PPR_BUSFREE |
| 4791 | | MSG_FLAG_IU_REQ_CHANGED; |
| 4792 | |
| 4793 | ahd_force_renegotiation(ahd, devinfo); |
| 4794 | ahd->msgout_index = 0; |
| 4795 | ahd->msgout_len = 0; |
| 4796 | ahd_build_transfer_msg(ahd, devinfo); |
| 4797 | ahd->msgout_index = 0; |
| 4798 | response = 1; |
| 4799 | } else { |
| 4800 | /* |
| 4801 | * Otherwise, we ignore it. |
| 4802 | */ |
| 4803 | printf("%s:%c:%d: Message reject for %x -- ignored\n", |
| 4804 | ahd_name(ahd), devinfo->channel, devinfo->target, |
| 4805 | last_msg); |
| 4806 | } |
| 4807 | return (response); |
| 4808 | } |
| 4809 | |
| 4810 | /* |
| 4811 | * Process an ingnore wide residue message. |
| 4812 | */ |
| 4813 | static void |
| 4814 | ahd_handle_ign_wide_residue(struct ahd_softc *ahd, struct ahd_devinfo *devinfo) |
| 4815 | { |
| 4816 | u_int scb_index; |
| 4817 | struct scb *scb; |
| 4818 | |
| 4819 | scb_index = ahd_get_scbptr(ahd); |
| 4820 | scb = ahd_lookup_scb(ahd, scb_index); |
| 4821 | /* |
| 4822 | * XXX Actually check data direction in the sequencer? |
| 4823 | * Perhaps add datadir to some spare bits in the hscb? |
| 4824 | */ |
| 4825 | if ((ahd_inb(ahd, SEQ_FLAGS) & DPHASE) == 0 |
| 4826 | || ahd_get_transfer_dir(scb) != CAM_DIR_IN) { |
| 4827 | /* |
| 4828 | * Ignore the message if we haven't |
| 4829 | * seen an appropriate data phase yet. |
| 4830 | */ |
| 4831 | } else { |
| 4832 | /* |
| 4833 | * If the residual occurred on the last |
| 4834 | * transfer and the transfer request was |
| 4835 | * expected to end on an odd count, do |
| 4836 | * nothing. Otherwise, subtract a byte |
| 4837 | * and update the residual count accordingly. |
| 4838 | */ |
| 4839 | uint32_t sgptr; |
| 4840 | |
| 4841 | sgptr = ahd_inb_scbram(ahd, SCB_RESIDUAL_SGPTR); |
| 4842 | if ((sgptr & SG_LIST_NULL) != 0 |
| 4843 | && (ahd_inb_scbram(ahd, SCB_TASK_ATTRIBUTE) |
| 4844 | & SCB_XFERLEN_ODD) != 0) { |
| 4845 | /* |
| 4846 | * If the residual occurred on the last |
| 4847 | * transfer and the transfer request was |
| 4848 | * expected to end on an odd count, do |
| 4849 | * nothing. |
| 4850 | */ |
| 4851 | } else { |
| 4852 | uint32_t data_cnt; |
| 4853 | uint64_t data_addr; |
| 4854 | uint32_t sglen; |
| 4855 | |
| 4856 | /* Pull in the rest of the sgptr */ |
| 4857 | sgptr = ahd_inl_scbram(ahd, SCB_RESIDUAL_SGPTR); |
| 4858 | data_cnt = ahd_inl_scbram(ahd, SCB_RESIDUAL_DATACNT); |
| 4859 | if ((sgptr & SG_LIST_NULL) != 0) { |
| 4860 | /* |
| 4861 | * The residual data count is not updated |
| 4862 | * for the command run to completion case. |
| 4863 | * Explicitly zero the count. |
| 4864 | */ |
| 4865 | data_cnt &= ~AHD_SG_LEN_MASK; |
| 4866 | } |
| 4867 | data_addr = ahd_inq(ahd, SHADDR); |
| 4868 | data_cnt += 1; |
| 4869 | data_addr -= 1; |
| 4870 | sgptr &= SG_PTR_MASK; |
| 4871 | if ((ahd->flags & AHD_64BIT_ADDRESSING) != 0) { |
| 4872 | struct ahd_dma64_seg *sg; |
| 4873 | |
| 4874 | sg = ahd_sg_bus_to_virt(ahd, scb, sgptr); |
| 4875 | |
| 4876 | /* |
| 4877 | * The residual sg ptr points to the next S/G |
| 4878 | * to load so we must go back one. |
| 4879 | */ |
| 4880 | sg--; |
| 4881 | sglen = ahd_le32toh(sg->len) & AHD_SG_LEN_MASK; |
| 4882 | if (sg != scb->sg_list |
| 4883 | && sglen < (data_cnt & AHD_SG_LEN_MASK)) { |
| 4884 | |
| 4885 | sg--; |
| 4886 | sglen = ahd_le32toh(sg->len); |
| 4887 | /* |
| 4888 | * Preserve High Address and SG_LIST |
| 4889 | * bits while setting the count to 1. |
| 4890 | */ |
| 4891 | data_cnt = 1|(sglen&(~AHD_SG_LEN_MASK)); |
| 4892 | data_addr = ahd_le64toh(sg->addr) |
| 4893 | + (sglen & AHD_SG_LEN_MASK) |
| 4894 | - 1; |
| 4895 | |
| 4896 | /* |
| 4897 | * Increment sg so it points to the |
| 4898 | * "next" sg. |
| 4899 | */ |
| 4900 | sg++; |
| 4901 | sgptr = ahd_sg_virt_to_bus(ahd, scb, |
| 4902 | sg); |
| 4903 | } |
| 4904 | } else { |
| 4905 | struct ahd_dma_seg *sg; |
| 4906 | |
| 4907 | sg = ahd_sg_bus_to_virt(ahd, scb, sgptr); |
| 4908 | |
| 4909 | /* |
| 4910 | * The residual sg ptr points to the next S/G |
| 4911 | * to load so we must go back one. |
| 4912 | */ |
| 4913 | sg--; |
| 4914 | sglen = ahd_le32toh(sg->len) & AHD_SG_LEN_MASK; |
| 4915 | if (sg != scb->sg_list |
| 4916 | && sglen < (data_cnt & AHD_SG_LEN_MASK)) { |
| 4917 | |
| 4918 | sg--; |
| 4919 | sglen = ahd_le32toh(sg->len); |
| 4920 | /* |
| 4921 | * Preserve High Address and SG_LIST |
| 4922 | * bits while setting the count to 1. |
| 4923 | */ |
| 4924 | data_cnt = 1|(sglen&(~AHD_SG_LEN_MASK)); |
| 4925 | data_addr = ahd_le32toh(sg->addr) |
| 4926 | + (sglen & AHD_SG_LEN_MASK) |
| 4927 | - 1; |
| 4928 | |
| 4929 | /* |
| 4930 | * Increment sg so it points to the |
| 4931 | * "next" sg. |
| 4932 | */ |
| 4933 | sg++; |
| 4934 | sgptr = ahd_sg_virt_to_bus(ahd, scb, |
| 4935 | sg); |
| 4936 | } |
| 4937 | } |
| 4938 | /* |
| 4939 | * Toggle the "oddness" of the transfer length |
| 4940 | * to handle this mid-transfer ignore wide |
| 4941 | * residue. This ensures that the oddness is |
| 4942 | * correct for subsequent data transfers. |
| 4943 | */ |
| 4944 | ahd_outb(ahd, SCB_TASK_ATTRIBUTE, |
| 4945 | ahd_inb_scbram(ahd, SCB_TASK_ATTRIBUTE) |
| 4946 | ^ SCB_XFERLEN_ODD); |
| 4947 | |
| 4948 | ahd_outl(ahd, SCB_RESIDUAL_SGPTR, sgptr); |
| 4949 | ahd_outl(ahd, SCB_RESIDUAL_DATACNT, data_cnt); |
| 4950 | /* |
| 4951 | * The FIFO's pointers will be updated if/when the |
| 4952 | * sequencer re-enters a data phase. |
| 4953 | */ |
| 4954 | } |
| 4955 | } |
| 4956 | } |
| 4957 | |
| 4958 | |
| 4959 | /* |
| 4960 | * Reinitialize the data pointers for the active transfer |
| 4961 | * based on its current residual. |
| 4962 | */ |
| 4963 | static void |
| 4964 | ahd_reinitialize_dataptrs(struct ahd_softc *ahd) |
| 4965 | { |
| 4966 | struct scb *scb; |
| 4967 | ahd_mode_state saved_modes; |
| 4968 | u_int scb_index; |
| 4969 | u_int wait; |
| 4970 | uint32_t sgptr; |
| 4971 | uint32_t resid; |
| 4972 | uint64_t dataptr; |
| 4973 | |
| 4974 | AHD_ASSERT_MODES(ahd, AHD_MODE_DFF0_MSK|AHD_MODE_DFF1_MSK, |
| 4975 | AHD_MODE_DFF0_MSK|AHD_MODE_DFF1_MSK); |
| 4976 | |
| 4977 | scb_index = ahd_get_scbptr(ahd); |
| 4978 | scb = ahd_lookup_scb(ahd, scb_index); |
| 4979 | |
| 4980 | /* |
| 4981 | * Release and reacquire the FIFO so we |
| 4982 | * have a clean slate. |
| 4983 | */ |
| 4984 | ahd_outb(ahd, DFFSXFRCTL, CLRCHN); |
| 4985 | wait = 1000; |
| 4986 | while (--wait && !(ahd_inb(ahd, MDFFSTAT) & FIFOFREE)) |
| 4987 | ahd_delay(100); |
| 4988 | if (wait == 0) { |
| 4989 | ahd_print_path(ahd, scb); |
| 4990 | printf("ahd_reinitialize_dataptrs: Forcing FIFO free.\n"); |
| 4991 | ahd_outb(ahd, DFFSXFRCTL, RSTCHN|CLRSHCNT); |
| 4992 | } |
| 4993 | saved_modes = ahd_save_modes(ahd); |
| 4994 | ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); |
| 4995 | ahd_outb(ahd, DFFSTAT, |
| 4996 | ahd_inb(ahd, DFFSTAT) |
| 4997 | | (saved_modes == 0x11 ? CURRFIFO_1 : CURRFIFO_0)); |
| 4998 | |
| 4999 | /* |
| 5000 | * Determine initial values for data_addr and data_cnt |
| 5001 | * for resuming the data phase. |
| 5002 | */ |
Hannes Reinecke | ba62cd2 | 2006-01-12 12:07:02 +0100 | [diff] [blame] | 5003 | sgptr = ahd_inl_scbram(ahd, SCB_RESIDUAL_SGPTR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5004 | sgptr &= SG_PTR_MASK; |
| 5005 | |
| 5006 | resid = (ahd_inb_scbram(ahd, SCB_RESIDUAL_DATACNT + 2) << 16) |
| 5007 | | (ahd_inb_scbram(ahd, SCB_RESIDUAL_DATACNT + 1) << 8) |
| 5008 | | ahd_inb_scbram(ahd, SCB_RESIDUAL_DATACNT); |
| 5009 | |
| 5010 | if ((ahd->flags & AHD_64BIT_ADDRESSING) != 0) { |
| 5011 | struct ahd_dma64_seg *sg; |
| 5012 | |
| 5013 | sg = ahd_sg_bus_to_virt(ahd, scb, sgptr); |
| 5014 | |
| 5015 | /* The residual sg_ptr always points to the next sg */ |
| 5016 | sg--; |
| 5017 | |
| 5018 | dataptr = ahd_le64toh(sg->addr) |
| 5019 | + (ahd_le32toh(sg->len) & AHD_SG_LEN_MASK) |
| 5020 | - resid; |
Hannes Reinecke | ba62cd2 | 2006-01-12 12:07:02 +0100 | [diff] [blame] | 5021 | ahd_outl(ahd, HADDR + 4, dataptr >> 32); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5022 | } else { |
| 5023 | struct ahd_dma_seg *sg; |
| 5024 | |
| 5025 | sg = ahd_sg_bus_to_virt(ahd, scb, sgptr); |
| 5026 | |
| 5027 | /* The residual sg_ptr always points to the next sg */ |
| 5028 | sg--; |
| 5029 | |
| 5030 | dataptr = ahd_le32toh(sg->addr) |
| 5031 | + (ahd_le32toh(sg->len) & AHD_SG_LEN_MASK) |
| 5032 | - resid; |
| 5033 | ahd_outb(ahd, HADDR + 4, |
| 5034 | (ahd_le32toh(sg->len) & ~AHD_SG_LEN_MASK) >> 24); |
| 5035 | } |
Hannes Reinecke | ba62cd2 | 2006-01-12 12:07:02 +0100 | [diff] [blame] | 5036 | ahd_outl(ahd, HADDR, dataptr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5037 | ahd_outb(ahd, HCNT + 2, resid >> 16); |
| 5038 | ahd_outb(ahd, HCNT + 1, resid >> 8); |
| 5039 | ahd_outb(ahd, HCNT, resid); |
| 5040 | } |
| 5041 | |
| 5042 | /* |
| 5043 | * Handle the effects of issuing a bus device reset message. |
| 5044 | */ |
| 5045 | static void |
| 5046 | ahd_handle_devreset(struct ahd_softc *ahd, struct ahd_devinfo *devinfo, |
| 5047 | u_int lun, cam_status status, char *message, |
| 5048 | int verbose_level) |
| 5049 | { |
| 5050 | #ifdef AHD_TARGET_MODE |
| 5051 | struct ahd_tmode_tstate* tstate; |
| 5052 | #endif |
| 5053 | int found; |
| 5054 | |
| 5055 | found = ahd_abort_scbs(ahd, devinfo->target, devinfo->channel, |
| 5056 | lun, SCB_LIST_NULL, devinfo->role, |
| 5057 | status); |
| 5058 | |
| 5059 | #ifdef AHD_TARGET_MODE |
| 5060 | /* |
| 5061 | * Send an immediate notify ccb to all target mord peripheral |
| 5062 | * drivers affected by this action. |
| 5063 | */ |
| 5064 | tstate = ahd->enabled_targets[devinfo->our_scsiid]; |
| 5065 | if (tstate != NULL) { |
| 5066 | u_int cur_lun; |
| 5067 | u_int max_lun; |
| 5068 | |
| 5069 | if (lun != CAM_LUN_WILDCARD) { |
| 5070 | cur_lun = 0; |
| 5071 | max_lun = AHD_NUM_LUNS - 1; |
| 5072 | } else { |
| 5073 | cur_lun = lun; |
| 5074 | max_lun = lun; |
| 5075 | } |
| 5076 | for (cur_lun <= max_lun; cur_lun++) { |
| 5077 | struct ahd_tmode_lstate* lstate; |
| 5078 | |
| 5079 | lstate = tstate->enabled_luns[cur_lun]; |
| 5080 | if (lstate == NULL) |
| 5081 | continue; |
| 5082 | |
| 5083 | ahd_queue_lstate_event(ahd, lstate, devinfo->our_scsiid, |
| 5084 | MSG_BUS_DEV_RESET, /*arg*/0); |
| 5085 | ahd_send_lstate_events(ahd, lstate); |
| 5086 | } |
| 5087 | } |
| 5088 | #endif |
| 5089 | |
| 5090 | /* |
| 5091 | * Go back to async/narrow transfers and renegotiate. |
| 5092 | */ |
| 5093 | ahd_set_width(ahd, devinfo, MSG_EXT_WDTR_BUS_8_BIT, |
| 5094 | AHD_TRANS_CUR, /*paused*/TRUE); |
| 5095 | ahd_set_syncrate(ahd, devinfo, /*period*/0, /*offset*/0, |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 5096 | /*ppr_options*/0, AHD_TRANS_CUR, |
| 5097 | /*paused*/TRUE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5098 | |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 5099 | if (status != CAM_SEL_TIMEOUT) |
| 5100 | ahd_send_async(ahd, devinfo->channel, devinfo->target, |
| 5101 | CAM_LUN_WILDCARD, AC_SENT_BDR, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5102 | |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 5103 | if (message != NULL && bootverbose) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5104 | printf("%s: %s on %c:%d. %d SCBs aborted\n", ahd_name(ahd), |
| 5105 | message, devinfo->channel, devinfo->target, found); |
| 5106 | } |
| 5107 | |
| 5108 | #ifdef AHD_TARGET_MODE |
| 5109 | static void |
| 5110 | ahd_setup_target_msgin(struct ahd_softc *ahd, struct ahd_devinfo *devinfo, |
| 5111 | struct scb *scb) |
| 5112 | { |
| 5113 | |
| 5114 | /* |
| 5115 | * To facilitate adding multiple messages together, |
| 5116 | * each routine should increment the index and len |
| 5117 | * variables instead of setting them explicitly. |
| 5118 | */ |
| 5119 | ahd->msgout_index = 0; |
| 5120 | ahd->msgout_len = 0; |
| 5121 | |
| 5122 | if (scb != NULL && (scb->flags & SCB_AUTO_NEGOTIATE) != 0) |
| 5123 | ahd_build_transfer_msg(ahd, devinfo); |
| 5124 | else |
| 5125 | panic("ahd_intr: AWAITING target message with no message"); |
| 5126 | |
| 5127 | ahd->msgout_index = 0; |
| 5128 | ahd->msg_type = MSG_TYPE_TARGET_MSGIN; |
| 5129 | } |
| 5130 | #endif |
| 5131 | /**************************** Initialization **********************************/ |
| 5132 | static u_int |
| 5133 | ahd_sglist_size(struct ahd_softc *ahd) |
| 5134 | { |
| 5135 | bus_size_t list_size; |
| 5136 | |
| 5137 | list_size = sizeof(struct ahd_dma_seg) * AHD_NSEG; |
| 5138 | if ((ahd->flags & AHD_64BIT_ADDRESSING) != 0) |
| 5139 | list_size = sizeof(struct ahd_dma64_seg) * AHD_NSEG; |
| 5140 | return (list_size); |
| 5141 | } |
| 5142 | |
| 5143 | /* |
| 5144 | * Calculate the optimum S/G List allocation size. S/G elements used |
| 5145 | * for a given transaction must be physically contiguous. Assume the |
| 5146 | * OS will allocate full pages to us, so it doesn't make sense to request |
| 5147 | * less than a page. |
| 5148 | */ |
| 5149 | static u_int |
| 5150 | ahd_sglist_allocsize(struct ahd_softc *ahd) |
| 5151 | { |
| 5152 | bus_size_t sg_list_increment; |
| 5153 | bus_size_t sg_list_size; |
| 5154 | bus_size_t max_list_size; |
| 5155 | bus_size_t best_list_size; |
| 5156 | |
| 5157 | /* Start out with the minimum required for AHD_NSEG. */ |
| 5158 | sg_list_increment = ahd_sglist_size(ahd); |
| 5159 | sg_list_size = sg_list_increment; |
| 5160 | |
| 5161 | /* Get us as close as possible to a page in size. */ |
| 5162 | while ((sg_list_size + sg_list_increment) <= PAGE_SIZE) |
| 5163 | sg_list_size += sg_list_increment; |
| 5164 | |
| 5165 | /* |
| 5166 | * Try to reduce the amount of wastage by allocating |
| 5167 | * multiple pages. |
| 5168 | */ |
| 5169 | best_list_size = sg_list_size; |
| 5170 | max_list_size = roundup(sg_list_increment, PAGE_SIZE); |
| 5171 | if (max_list_size < 4 * PAGE_SIZE) |
| 5172 | max_list_size = 4 * PAGE_SIZE; |
| 5173 | if (max_list_size > (AHD_SCB_MAX_ALLOC * sg_list_increment)) |
| 5174 | max_list_size = (AHD_SCB_MAX_ALLOC * sg_list_increment); |
| 5175 | while ((sg_list_size + sg_list_increment) <= max_list_size |
| 5176 | && (sg_list_size % PAGE_SIZE) != 0) { |
| 5177 | bus_size_t new_mod; |
| 5178 | bus_size_t best_mod; |
| 5179 | |
| 5180 | sg_list_size += sg_list_increment; |
| 5181 | new_mod = sg_list_size % PAGE_SIZE; |
| 5182 | best_mod = best_list_size % PAGE_SIZE; |
| 5183 | if (new_mod > best_mod || new_mod == 0) { |
| 5184 | best_list_size = sg_list_size; |
| 5185 | } |
| 5186 | } |
| 5187 | return (best_list_size); |
| 5188 | } |
| 5189 | |
| 5190 | /* |
| 5191 | * Allocate a controller structure for a new device |
| 5192 | * and perform initial initializion. |
| 5193 | */ |
| 5194 | struct ahd_softc * |
| 5195 | ahd_alloc(void *platform_arg, char *name) |
| 5196 | { |
| 5197 | struct ahd_softc *ahd; |
| 5198 | |
| 5199 | #ifndef __FreeBSD__ |
| 5200 | ahd = malloc(sizeof(*ahd), M_DEVBUF, M_NOWAIT); |
| 5201 | if (!ahd) { |
| 5202 | printf("aic7xxx: cannot malloc softc!\n"); |
| 5203 | free(name, M_DEVBUF); |
| 5204 | return NULL; |
| 5205 | } |
| 5206 | #else |
| 5207 | ahd = device_get_softc((device_t)platform_arg); |
| 5208 | #endif |
| 5209 | memset(ahd, 0, sizeof(*ahd)); |
| 5210 | ahd->seep_config = malloc(sizeof(*ahd->seep_config), |
| 5211 | M_DEVBUF, M_NOWAIT); |
| 5212 | if (ahd->seep_config == NULL) { |
| 5213 | #ifndef __FreeBSD__ |
| 5214 | free(ahd, M_DEVBUF); |
| 5215 | #endif |
| 5216 | free(name, M_DEVBUF); |
| 5217 | return (NULL); |
| 5218 | } |
| 5219 | LIST_INIT(&ahd->pending_scbs); |
| 5220 | /* We don't know our unit number until the OSM sets it */ |
| 5221 | ahd->name = name; |
| 5222 | ahd->unit = -1; |
| 5223 | ahd->description = NULL; |
| 5224 | ahd->bus_description = NULL; |
| 5225 | ahd->channel = 'A'; |
| 5226 | ahd->chip = AHD_NONE; |
| 5227 | ahd->features = AHD_FENONE; |
| 5228 | ahd->bugs = AHD_BUGNONE; |
| 5229 | ahd->flags = AHD_SPCHK_ENB_A|AHD_RESET_BUS_A|AHD_TERM_ENB_A |
| 5230 | | AHD_EXTENDED_TRANS_A|AHD_STPWLEVEL_A; |
| 5231 | ahd_timer_init(&ahd->reset_timer); |
| 5232 | ahd_timer_init(&ahd->stat_timer); |
| 5233 | ahd->int_coalescing_timer = AHD_INT_COALESCING_TIMER_DEFAULT; |
| 5234 | ahd->int_coalescing_maxcmds = AHD_INT_COALESCING_MAXCMDS_DEFAULT; |
| 5235 | ahd->int_coalescing_mincmds = AHD_INT_COALESCING_MINCMDS_DEFAULT; |
| 5236 | ahd->int_coalescing_threshold = AHD_INT_COALESCING_THRESHOLD_DEFAULT; |
| 5237 | ahd->int_coalescing_stop_threshold = |
| 5238 | AHD_INT_COALESCING_STOP_THRESHOLD_DEFAULT; |
| 5239 | |
| 5240 | if (ahd_platform_alloc(ahd, platform_arg) != 0) { |
| 5241 | ahd_free(ahd); |
| 5242 | ahd = NULL; |
| 5243 | } |
| 5244 | #ifdef AHD_DEBUG |
| 5245 | if ((ahd_debug & AHD_SHOW_MEMORY) != 0) { |
| 5246 | printf("%s: scb size = 0x%x, hscb size = 0x%x\n", |
| 5247 | ahd_name(ahd), (u_int)sizeof(struct scb), |
| 5248 | (u_int)sizeof(struct hardware_scb)); |
| 5249 | } |
| 5250 | #endif |
| 5251 | return (ahd); |
| 5252 | } |
| 5253 | |
| 5254 | int |
| 5255 | ahd_softc_init(struct ahd_softc *ahd) |
| 5256 | { |
| 5257 | |
| 5258 | ahd->unpause = 0; |
| 5259 | ahd->pause = PAUSE; |
| 5260 | return (0); |
| 5261 | } |
| 5262 | |
| 5263 | void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5264 | ahd_set_unit(struct ahd_softc *ahd, int unit) |
| 5265 | { |
| 5266 | ahd->unit = unit; |
| 5267 | } |
| 5268 | |
| 5269 | void |
| 5270 | ahd_set_name(struct ahd_softc *ahd, char *name) |
| 5271 | { |
| 5272 | if (ahd->name != NULL) |
| 5273 | free(ahd->name, M_DEVBUF); |
| 5274 | ahd->name = name; |
| 5275 | } |
| 5276 | |
| 5277 | void |
| 5278 | ahd_free(struct ahd_softc *ahd) |
| 5279 | { |
| 5280 | int i; |
| 5281 | |
| 5282 | switch (ahd->init_level) { |
| 5283 | default: |
| 5284 | case 5: |
| 5285 | ahd_shutdown(ahd); |
| 5286 | /* FALLTHROUGH */ |
| 5287 | case 4: |
| 5288 | ahd_dmamap_unload(ahd, ahd->shared_data_dmat, |
Hannes Reinecke | 66a0683 | 2006-01-12 12:05:46 +0100 | [diff] [blame] | 5289 | ahd->shared_data_map.dmamap); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5290 | /* FALLTHROUGH */ |
| 5291 | case 3: |
| 5292 | ahd_dmamem_free(ahd, ahd->shared_data_dmat, ahd->qoutfifo, |
Hannes Reinecke | 66a0683 | 2006-01-12 12:05:46 +0100 | [diff] [blame] | 5293 | ahd->shared_data_map.dmamap); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5294 | ahd_dmamap_destroy(ahd, ahd->shared_data_dmat, |
Hannes Reinecke | 66a0683 | 2006-01-12 12:05:46 +0100 | [diff] [blame] | 5295 | ahd->shared_data_map.dmamap); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5296 | /* FALLTHROUGH */ |
| 5297 | case 2: |
| 5298 | ahd_dma_tag_destroy(ahd, ahd->shared_data_dmat); |
| 5299 | case 1: |
| 5300 | #ifndef __linux__ |
| 5301 | ahd_dma_tag_destroy(ahd, ahd->buffer_dmat); |
| 5302 | #endif |
| 5303 | break; |
| 5304 | case 0: |
| 5305 | break; |
| 5306 | } |
| 5307 | |
| 5308 | #ifndef __linux__ |
| 5309 | ahd_dma_tag_destroy(ahd, ahd->parent_dmat); |
| 5310 | #endif |
| 5311 | ahd_platform_free(ahd); |
| 5312 | ahd_fini_scbdata(ahd); |
| 5313 | for (i = 0; i < AHD_NUM_TARGETS; i++) { |
| 5314 | struct ahd_tmode_tstate *tstate; |
| 5315 | |
| 5316 | tstate = ahd->enabled_targets[i]; |
| 5317 | if (tstate != NULL) { |
| 5318 | #ifdef AHD_TARGET_MODE |
| 5319 | int j; |
| 5320 | |
| 5321 | for (j = 0; j < AHD_NUM_LUNS; j++) { |
| 5322 | struct ahd_tmode_lstate *lstate; |
| 5323 | |
| 5324 | lstate = tstate->enabled_luns[j]; |
| 5325 | if (lstate != NULL) { |
| 5326 | xpt_free_path(lstate->path); |
| 5327 | free(lstate, M_DEVBUF); |
| 5328 | } |
| 5329 | } |
| 5330 | #endif |
| 5331 | free(tstate, M_DEVBUF); |
| 5332 | } |
| 5333 | } |
| 5334 | #ifdef AHD_TARGET_MODE |
| 5335 | if (ahd->black_hole != NULL) { |
| 5336 | xpt_free_path(ahd->black_hole->path); |
| 5337 | free(ahd->black_hole, M_DEVBUF); |
| 5338 | } |
| 5339 | #endif |
| 5340 | if (ahd->name != NULL) |
| 5341 | free(ahd->name, M_DEVBUF); |
| 5342 | if (ahd->seep_config != NULL) |
| 5343 | free(ahd->seep_config, M_DEVBUF); |
| 5344 | if (ahd->saved_stack != NULL) |
| 5345 | free(ahd->saved_stack, M_DEVBUF); |
| 5346 | #ifndef __FreeBSD__ |
| 5347 | free(ahd, M_DEVBUF); |
| 5348 | #endif |
| 5349 | return; |
| 5350 | } |
| 5351 | |
| 5352 | void |
| 5353 | ahd_shutdown(void *arg) |
| 5354 | { |
| 5355 | struct ahd_softc *ahd; |
| 5356 | |
| 5357 | ahd = (struct ahd_softc *)arg; |
| 5358 | |
| 5359 | /* |
| 5360 | * Stop periodic timer callbacks. |
| 5361 | */ |
| 5362 | ahd_timer_stop(&ahd->reset_timer); |
| 5363 | ahd_timer_stop(&ahd->stat_timer); |
| 5364 | |
| 5365 | /* This will reset most registers to 0, but not all */ |
| 5366 | ahd_reset(ahd, /*reinit*/FALSE); |
| 5367 | } |
| 5368 | |
| 5369 | /* |
| 5370 | * Reset the controller and record some information about it |
| 5371 | * that is only available just after a reset. If "reinit" is |
| 5372 | * non-zero, this reset occured after initial configuration |
| 5373 | * and the caller requests that the chip be fully reinitialized |
| 5374 | * to a runable state. Chip interrupts are *not* enabled after |
| 5375 | * a reinitialization. The caller must enable interrupts via |
| 5376 | * ahd_intr_enable(). |
| 5377 | */ |
| 5378 | int |
| 5379 | ahd_reset(struct ahd_softc *ahd, int reinit) |
| 5380 | { |
| 5381 | u_int sxfrctl1; |
| 5382 | int wait; |
| 5383 | uint32_t cmd; |
| 5384 | |
| 5385 | /* |
| 5386 | * Preserve the value of the SXFRCTL1 register for all channels. |
| 5387 | * It contains settings that affect termination and we don't want |
| 5388 | * to disturb the integrity of the bus. |
| 5389 | */ |
| 5390 | ahd_pause(ahd); |
| 5391 | ahd_update_modes(ahd); |
| 5392 | ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); |
| 5393 | sxfrctl1 = ahd_inb(ahd, SXFRCTL1); |
| 5394 | |
| 5395 | cmd = ahd_pci_read_config(ahd->dev_softc, PCIR_COMMAND, /*bytes*/2); |
| 5396 | if ((ahd->bugs & AHD_PCIX_CHIPRST_BUG) != 0) { |
| 5397 | uint32_t mod_cmd; |
| 5398 | |
| 5399 | /* |
| 5400 | * A4 Razor #632 |
| 5401 | * During the assertion of CHIPRST, the chip |
| 5402 | * does not disable its parity logic prior to |
| 5403 | * the start of the reset. This may cause a |
| 5404 | * parity error to be detected and thus a |
| 5405 | * spurious SERR or PERR assertion. Disble |
| 5406 | * PERR and SERR responses during the CHIPRST. |
| 5407 | */ |
| 5408 | mod_cmd = cmd & ~(PCIM_CMD_PERRESPEN|PCIM_CMD_SERRESPEN); |
| 5409 | ahd_pci_write_config(ahd->dev_softc, PCIR_COMMAND, |
| 5410 | mod_cmd, /*bytes*/2); |
| 5411 | } |
| 5412 | ahd_outb(ahd, HCNTRL, CHIPRST | ahd->pause); |
| 5413 | |
| 5414 | /* |
| 5415 | * Ensure that the reset has finished. We delay 1000us |
| 5416 | * prior to reading the register to make sure the chip |
| 5417 | * has sufficiently completed its reset to handle register |
| 5418 | * accesses. |
| 5419 | */ |
| 5420 | wait = 1000; |
| 5421 | do { |
| 5422 | ahd_delay(1000); |
| 5423 | } while (--wait && !(ahd_inb(ahd, HCNTRL) & CHIPRSTACK)); |
| 5424 | |
| 5425 | if (wait == 0) { |
| 5426 | printf("%s: WARNING - Failed chip reset! " |
| 5427 | "Trying to initialize anyway.\n", ahd_name(ahd)); |
| 5428 | } |
| 5429 | ahd_outb(ahd, HCNTRL, ahd->pause); |
| 5430 | |
| 5431 | if ((ahd->bugs & AHD_PCIX_CHIPRST_BUG) != 0) { |
| 5432 | /* |
| 5433 | * Clear any latched PCI error status and restore |
| 5434 | * previous SERR and PERR response enables. |
| 5435 | */ |
| 5436 | ahd_pci_write_config(ahd->dev_softc, PCIR_STATUS + 1, |
| 5437 | 0xFF, /*bytes*/1); |
| 5438 | ahd_pci_write_config(ahd->dev_softc, PCIR_COMMAND, |
| 5439 | cmd, /*bytes*/2); |
| 5440 | } |
| 5441 | |
| 5442 | /* |
| 5443 | * Mode should be SCSI after a chip reset, but lets |
| 5444 | * set it just to be safe. We touch the MODE_PTR |
| 5445 | * register directly so as to bypass the lazy update |
| 5446 | * code in ahd_set_modes(). |
| 5447 | */ |
| 5448 | ahd_known_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); |
| 5449 | ahd_outb(ahd, MODE_PTR, |
| 5450 | ahd_build_mode_state(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI)); |
| 5451 | |
| 5452 | /* |
| 5453 | * Restore SXFRCTL1. |
| 5454 | * |
| 5455 | * We must always initialize STPWEN to 1 before we |
| 5456 | * restore the saved values. STPWEN is initialized |
| 5457 | * to a tri-state condition which can only be cleared |
| 5458 | * by turning it on. |
| 5459 | */ |
| 5460 | ahd_outb(ahd, SXFRCTL1, sxfrctl1|STPWEN); |
| 5461 | ahd_outb(ahd, SXFRCTL1, sxfrctl1); |
| 5462 | |
| 5463 | /* Determine chip configuration */ |
| 5464 | ahd->features &= ~AHD_WIDE; |
| 5465 | if ((ahd_inb(ahd, SBLKCTL) & SELWIDE) != 0) |
| 5466 | ahd->features |= AHD_WIDE; |
| 5467 | |
| 5468 | /* |
| 5469 | * If a recovery action has forced a chip reset, |
| 5470 | * re-initialize the chip to our liking. |
| 5471 | */ |
| 5472 | if (reinit != 0) |
| 5473 | ahd_chip_init(ahd); |
| 5474 | |
| 5475 | return (0); |
| 5476 | } |
| 5477 | |
| 5478 | /* |
| 5479 | * Determine the number of SCBs available on the controller |
| 5480 | */ |
| 5481 | int |
| 5482 | ahd_probe_scbs(struct ahd_softc *ahd) { |
| 5483 | int i; |
| 5484 | |
| 5485 | AHD_ASSERT_MODES(ahd, ~(AHD_MODE_UNKNOWN_MSK|AHD_MODE_CFG_MSK), |
| 5486 | ~(AHD_MODE_UNKNOWN_MSK|AHD_MODE_CFG_MSK)); |
| 5487 | for (i = 0; i < AHD_SCB_MAX; i++) { |
| 5488 | int j; |
| 5489 | |
| 5490 | ahd_set_scbptr(ahd, i); |
| 5491 | ahd_outw(ahd, SCB_BASE, i); |
| 5492 | for (j = 2; j < 64; j++) |
| 5493 | ahd_outb(ahd, SCB_BASE+j, 0); |
| 5494 | /* Start out life as unallocated (needing an abort) */ |
| 5495 | ahd_outb(ahd, SCB_CONTROL, MK_MESSAGE); |
| 5496 | if (ahd_inw_scbram(ahd, SCB_BASE) != i) |
| 5497 | break; |
| 5498 | ahd_set_scbptr(ahd, 0); |
| 5499 | if (ahd_inw_scbram(ahd, SCB_BASE) != 0) |
| 5500 | break; |
| 5501 | } |
| 5502 | return (i); |
| 5503 | } |
| 5504 | |
| 5505 | static void |
| 5506 | ahd_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error) |
| 5507 | { |
| 5508 | dma_addr_t *baddr; |
| 5509 | |
| 5510 | baddr = (dma_addr_t *)arg; |
| 5511 | *baddr = segs->ds_addr; |
| 5512 | } |
| 5513 | |
| 5514 | static void |
| 5515 | ahd_initialize_hscbs(struct ahd_softc *ahd) |
| 5516 | { |
| 5517 | int i; |
| 5518 | |
| 5519 | for (i = 0; i < ahd->scb_data.maxhscbs; i++) { |
| 5520 | ahd_set_scbptr(ahd, i); |
| 5521 | |
| 5522 | /* Clear the control byte. */ |
| 5523 | ahd_outb(ahd, SCB_CONTROL, 0); |
| 5524 | |
| 5525 | /* Set the next pointer */ |
| 5526 | ahd_outw(ahd, SCB_NEXT, SCB_LIST_NULL); |
| 5527 | } |
| 5528 | } |
| 5529 | |
| 5530 | static int |
| 5531 | ahd_init_scbdata(struct ahd_softc *ahd) |
| 5532 | { |
| 5533 | struct scb_data *scb_data; |
| 5534 | int i; |
| 5535 | |
| 5536 | scb_data = &ahd->scb_data; |
| 5537 | TAILQ_INIT(&scb_data->free_scbs); |
| 5538 | for (i = 0; i < AHD_NUM_TARGETS * AHD_NUM_LUNS_NONPKT; i++) |
| 5539 | LIST_INIT(&scb_data->free_scb_lists[i]); |
| 5540 | LIST_INIT(&scb_data->any_dev_free_scb_list); |
| 5541 | SLIST_INIT(&scb_data->hscb_maps); |
| 5542 | SLIST_INIT(&scb_data->sg_maps); |
| 5543 | SLIST_INIT(&scb_data->sense_maps); |
| 5544 | |
| 5545 | /* Determine the number of hardware SCBs and initialize them */ |
| 5546 | scb_data->maxhscbs = ahd_probe_scbs(ahd); |
| 5547 | if (scb_data->maxhscbs == 0) { |
| 5548 | printf("%s: No SCB space found\n", ahd_name(ahd)); |
| 5549 | return (ENXIO); |
| 5550 | } |
| 5551 | |
| 5552 | ahd_initialize_hscbs(ahd); |
| 5553 | |
| 5554 | /* |
| 5555 | * Create our DMA tags. These tags define the kinds of device |
| 5556 | * accessible memory allocations and memory mappings we will |
| 5557 | * need to perform during normal operation. |
| 5558 | * |
| 5559 | * Unless we need to further restrict the allocation, we rely |
| 5560 | * on the restrictions of the parent dmat, hence the common |
| 5561 | * use of MAXADDR and MAXSIZE. |
| 5562 | */ |
| 5563 | |
| 5564 | /* DMA tag for our hardware scb structures */ |
| 5565 | if (ahd_dma_tag_create(ahd, ahd->parent_dmat, /*alignment*/1, |
| 5566 | /*boundary*/BUS_SPACE_MAXADDR_32BIT + 1, |
| 5567 | /*lowaddr*/BUS_SPACE_MAXADDR_32BIT, |
| 5568 | /*highaddr*/BUS_SPACE_MAXADDR, |
| 5569 | /*filter*/NULL, /*filterarg*/NULL, |
| 5570 | PAGE_SIZE, /*nsegments*/1, |
| 5571 | /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT, |
| 5572 | /*flags*/0, &scb_data->hscb_dmat) != 0) { |
| 5573 | goto error_exit; |
| 5574 | } |
| 5575 | |
| 5576 | scb_data->init_level++; |
| 5577 | |
| 5578 | /* DMA tag for our S/G structures. */ |
| 5579 | if (ahd_dma_tag_create(ahd, ahd->parent_dmat, /*alignment*/8, |
| 5580 | /*boundary*/BUS_SPACE_MAXADDR_32BIT + 1, |
| 5581 | /*lowaddr*/BUS_SPACE_MAXADDR_32BIT, |
| 5582 | /*highaddr*/BUS_SPACE_MAXADDR, |
| 5583 | /*filter*/NULL, /*filterarg*/NULL, |
| 5584 | ahd_sglist_allocsize(ahd), /*nsegments*/1, |
| 5585 | /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT, |
| 5586 | /*flags*/0, &scb_data->sg_dmat) != 0) { |
| 5587 | goto error_exit; |
| 5588 | } |
| 5589 | #ifdef AHD_DEBUG |
| 5590 | if ((ahd_debug & AHD_SHOW_MEMORY) != 0) |
| 5591 | printf("%s: ahd_sglist_allocsize = 0x%x\n", ahd_name(ahd), |
| 5592 | ahd_sglist_allocsize(ahd)); |
| 5593 | #endif |
| 5594 | |
| 5595 | scb_data->init_level++; |
| 5596 | |
| 5597 | /* DMA tag for our sense buffers. We allocate in page sized chunks */ |
| 5598 | if (ahd_dma_tag_create(ahd, ahd->parent_dmat, /*alignment*/1, |
| 5599 | /*boundary*/BUS_SPACE_MAXADDR_32BIT + 1, |
| 5600 | /*lowaddr*/BUS_SPACE_MAXADDR_32BIT, |
| 5601 | /*highaddr*/BUS_SPACE_MAXADDR, |
| 5602 | /*filter*/NULL, /*filterarg*/NULL, |
| 5603 | PAGE_SIZE, /*nsegments*/1, |
| 5604 | /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT, |
| 5605 | /*flags*/0, &scb_data->sense_dmat) != 0) { |
| 5606 | goto error_exit; |
| 5607 | } |
| 5608 | |
| 5609 | scb_data->init_level++; |
| 5610 | |
| 5611 | /* Perform initial CCB allocation */ |
| 5612 | ahd_alloc_scbs(ahd); |
| 5613 | |
| 5614 | if (scb_data->numscbs == 0) { |
| 5615 | printf("%s: ahd_init_scbdata - " |
| 5616 | "Unable to allocate initial scbs\n", |
| 5617 | ahd_name(ahd)); |
| 5618 | goto error_exit; |
| 5619 | } |
| 5620 | |
| 5621 | /* |
| 5622 | * Note that we were successfull |
| 5623 | */ |
| 5624 | return (0); |
| 5625 | |
| 5626 | error_exit: |
| 5627 | |
| 5628 | return (ENOMEM); |
| 5629 | } |
| 5630 | |
| 5631 | static struct scb * |
| 5632 | ahd_find_scb_by_tag(struct ahd_softc *ahd, u_int tag) |
| 5633 | { |
| 5634 | struct scb *scb; |
| 5635 | |
| 5636 | /* |
| 5637 | * Look on the pending list. |
| 5638 | */ |
| 5639 | LIST_FOREACH(scb, &ahd->pending_scbs, pending_links) { |
| 5640 | if (SCB_GET_TAG(scb) == tag) |
| 5641 | return (scb); |
| 5642 | } |
| 5643 | |
| 5644 | /* |
| 5645 | * Then on all of the collision free lists. |
| 5646 | */ |
| 5647 | TAILQ_FOREACH(scb, &ahd->scb_data.free_scbs, links.tqe) { |
| 5648 | struct scb *list_scb; |
| 5649 | |
| 5650 | list_scb = scb; |
| 5651 | do { |
| 5652 | if (SCB_GET_TAG(list_scb) == tag) |
| 5653 | return (list_scb); |
| 5654 | list_scb = LIST_NEXT(list_scb, collision_links); |
| 5655 | } while (list_scb); |
| 5656 | } |
| 5657 | |
| 5658 | /* |
| 5659 | * And finally on the generic free list. |
| 5660 | */ |
| 5661 | LIST_FOREACH(scb, &ahd->scb_data.any_dev_free_scb_list, links.le) { |
| 5662 | if (SCB_GET_TAG(scb) == tag) |
| 5663 | return (scb); |
| 5664 | } |
| 5665 | |
| 5666 | return (NULL); |
| 5667 | } |
| 5668 | |
| 5669 | static void |
| 5670 | ahd_fini_scbdata(struct ahd_softc *ahd) |
| 5671 | { |
| 5672 | struct scb_data *scb_data; |
| 5673 | |
| 5674 | scb_data = &ahd->scb_data; |
| 5675 | if (scb_data == NULL) |
| 5676 | return; |
| 5677 | |
| 5678 | switch (scb_data->init_level) { |
| 5679 | default: |
| 5680 | case 7: |
| 5681 | { |
| 5682 | struct map_node *sns_map; |
| 5683 | |
| 5684 | while ((sns_map = SLIST_FIRST(&scb_data->sense_maps)) != NULL) { |
| 5685 | SLIST_REMOVE_HEAD(&scb_data->sense_maps, links); |
| 5686 | ahd_dmamap_unload(ahd, scb_data->sense_dmat, |
| 5687 | sns_map->dmamap); |
| 5688 | ahd_dmamem_free(ahd, scb_data->sense_dmat, |
| 5689 | sns_map->vaddr, sns_map->dmamap); |
| 5690 | free(sns_map, M_DEVBUF); |
| 5691 | } |
| 5692 | ahd_dma_tag_destroy(ahd, scb_data->sense_dmat); |
| 5693 | /* FALLTHROUGH */ |
| 5694 | } |
| 5695 | case 6: |
| 5696 | { |
| 5697 | struct map_node *sg_map; |
| 5698 | |
| 5699 | while ((sg_map = SLIST_FIRST(&scb_data->sg_maps)) != NULL) { |
| 5700 | SLIST_REMOVE_HEAD(&scb_data->sg_maps, links); |
| 5701 | ahd_dmamap_unload(ahd, scb_data->sg_dmat, |
| 5702 | sg_map->dmamap); |
| 5703 | ahd_dmamem_free(ahd, scb_data->sg_dmat, |
| 5704 | sg_map->vaddr, sg_map->dmamap); |
| 5705 | free(sg_map, M_DEVBUF); |
| 5706 | } |
| 5707 | ahd_dma_tag_destroy(ahd, scb_data->sg_dmat); |
| 5708 | /* FALLTHROUGH */ |
| 5709 | } |
| 5710 | case 5: |
| 5711 | { |
| 5712 | struct map_node *hscb_map; |
| 5713 | |
| 5714 | while ((hscb_map = SLIST_FIRST(&scb_data->hscb_maps)) != NULL) { |
| 5715 | SLIST_REMOVE_HEAD(&scb_data->hscb_maps, links); |
| 5716 | ahd_dmamap_unload(ahd, scb_data->hscb_dmat, |
| 5717 | hscb_map->dmamap); |
| 5718 | ahd_dmamem_free(ahd, scb_data->hscb_dmat, |
| 5719 | hscb_map->vaddr, hscb_map->dmamap); |
| 5720 | free(hscb_map, M_DEVBUF); |
| 5721 | } |
| 5722 | ahd_dma_tag_destroy(ahd, scb_data->hscb_dmat); |
| 5723 | /* FALLTHROUGH */ |
| 5724 | } |
| 5725 | case 4: |
| 5726 | case 3: |
| 5727 | case 2: |
| 5728 | case 1: |
| 5729 | case 0: |
| 5730 | break; |
| 5731 | } |
| 5732 | } |
| 5733 | |
| 5734 | /* |
| 5735 | * DSP filter Bypass must be enabled until the first selection |
| 5736 | * after a change in bus mode (Razor #491 and #493). |
| 5737 | */ |
| 5738 | static void |
| 5739 | ahd_setup_iocell_workaround(struct ahd_softc *ahd) |
| 5740 | { |
| 5741 | ahd_mode_state saved_modes; |
| 5742 | |
| 5743 | saved_modes = ahd_save_modes(ahd); |
| 5744 | ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG); |
| 5745 | ahd_outb(ahd, DSPDATACTL, ahd_inb(ahd, DSPDATACTL) |
| 5746 | | BYPASSENAB | RCVROFFSTDIS | XMITOFFSTDIS); |
| 5747 | ahd_outb(ahd, SIMODE0, ahd_inb(ahd, SIMODE0) | (ENSELDO|ENSELDI)); |
| 5748 | #ifdef AHD_DEBUG |
| 5749 | if ((ahd_debug & AHD_SHOW_MISC) != 0) |
| 5750 | printf("%s: Setting up iocell workaround\n", ahd_name(ahd)); |
| 5751 | #endif |
| 5752 | ahd_restore_modes(ahd, saved_modes); |
| 5753 | ahd->flags &= ~AHD_HAD_FIRST_SEL; |
| 5754 | } |
| 5755 | |
| 5756 | static void |
| 5757 | ahd_iocell_first_selection(struct ahd_softc *ahd) |
| 5758 | { |
| 5759 | ahd_mode_state saved_modes; |
| 5760 | u_int sblkctl; |
| 5761 | |
| 5762 | if ((ahd->flags & AHD_HAD_FIRST_SEL) != 0) |
| 5763 | return; |
| 5764 | saved_modes = ahd_save_modes(ahd); |
| 5765 | ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); |
| 5766 | sblkctl = ahd_inb(ahd, SBLKCTL); |
| 5767 | ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG); |
| 5768 | #ifdef AHD_DEBUG |
| 5769 | if ((ahd_debug & AHD_SHOW_MISC) != 0) |
| 5770 | printf("%s: iocell first selection\n", ahd_name(ahd)); |
| 5771 | #endif |
| 5772 | if ((sblkctl & ENAB40) != 0) { |
| 5773 | ahd_outb(ahd, DSPDATACTL, |
| 5774 | ahd_inb(ahd, DSPDATACTL) & ~BYPASSENAB); |
| 5775 | #ifdef AHD_DEBUG |
| 5776 | if ((ahd_debug & AHD_SHOW_MISC) != 0) |
| 5777 | printf("%s: BYPASS now disabled\n", ahd_name(ahd)); |
| 5778 | #endif |
| 5779 | } |
| 5780 | ahd_outb(ahd, SIMODE0, ahd_inb(ahd, SIMODE0) & ~(ENSELDO|ENSELDI)); |
| 5781 | ahd_outb(ahd, CLRINT, CLRSCSIINT); |
| 5782 | ahd_restore_modes(ahd, saved_modes); |
| 5783 | ahd->flags |= AHD_HAD_FIRST_SEL; |
| 5784 | } |
| 5785 | |
| 5786 | /*************************** SCB Management ***********************************/ |
| 5787 | static void |
| 5788 | ahd_add_col_list(struct ahd_softc *ahd, struct scb *scb, u_int col_idx) |
| 5789 | { |
| 5790 | struct scb_list *free_list; |
| 5791 | struct scb_tailq *free_tailq; |
| 5792 | struct scb *first_scb; |
| 5793 | |
| 5794 | scb->flags |= SCB_ON_COL_LIST; |
| 5795 | AHD_SET_SCB_COL_IDX(scb, col_idx); |
| 5796 | free_list = &ahd->scb_data.free_scb_lists[col_idx]; |
| 5797 | free_tailq = &ahd->scb_data.free_scbs; |
| 5798 | first_scb = LIST_FIRST(free_list); |
| 5799 | if (first_scb != NULL) { |
| 5800 | LIST_INSERT_AFTER(first_scb, scb, collision_links); |
| 5801 | } else { |
| 5802 | LIST_INSERT_HEAD(free_list, scb, collision_links); |
| 5803 | TAILQ_INSERT_TAIL(free_tailq, scb, links.tqe); |
| 5804 | } |
| 5805 | } |
| 5806 | |
| 5807 | static void |
| 5808 | ahd_rem_col_list(struct ahd_softc *ahd, struct scb *scb) |
| 5809 | { |
| 5810 | struct scb_list *free_list; |
| 5811 | struct scb_tailq *free_tailq; |
| 5812 | struct scb *first_scb; |
| 5813 | u_int col_idx; |
| 5814 | |
| 5815 | scb->flags &= ~SCB_ON_COL_LIST; |
| 5816 | col_idx = AHD_GET_SCB_COL_IDX(ahd, scb); |
| 5817 | free_list = &ahd->scb_data.free_scb_lists[col_idx]; |
| 5818 | free_tailq = &ahd->scb_data.free_scbs; |
| 5819 | first_scb = LIST_FIRST(free_list); |
| 5820 | if (first_scb == scb) { |
| 5821 | struct scb *next_scb; |
| 5822 | |
| 5823 | /* |
| 5824 | * Maintain order in the collision free |
| 5825 | * lists for fairness if this device has |
| 5826 | * other colliding tags active. |
| 5827 | */ |
| 5828 | next_scb = LIST_NEXT(scb, collision_links); |
| 5829 | if (next_scb != NULL) { |
| 5830 | TAILQ_INSERT_AFTER(free_tailq, scb, |
| 5831 | next_scb, links.tqe); |
| 5832 | } |
| 5833 | TAILQ_REMOVE(free_tailq, scb, links.tqe); |
| 5834 | } |
| 5835 | LIST_REMOVE(scb, collision_links); |
| 5836 | } |
| 5837 | |
| 5838 | /* |
| 5839 | * Get a free scb. If there are none, see if we can allocate a new SCB. |
| 5840 | */ |
| 5841 | struct scb * |
| 5842 | ahd_get_scb(struct ahd_softc *ahd, u_int col_idx) |
| 5843 | { |
| 5844 | struct scb *scb; |
| 5845 | int tries; |
| 5846 | |
| 5847 | tries = 0; |
| 5848 | look_again: |
| 5849 | TAILQ_FOREACH(scb, &ahd->scb_data.free_scbs, links.tqe) { |
| 5850 | if (AHD_GET_SCB_COL_IDX(ahd, scb) != col_idx) { |
| 5851 | ahd_rem_col_list(ahd, scb); |
| 5852 | goto found; |
| 5853 | } |
| 5854 | } |
| 5855 | if ((scb = LIST_FIRST(&ahd->scb_data.any_dev_free_scb_list)) == NULL) { |
| 5856 | |
| 5857 | if (tries++ != 0) |
| 5858 | return (NULL); |
| 5859 | ahd_alloc_scbs(ahd); |
| 5860 | goto look_again; |
| 5861 | } |
| 5862 | LIST_REMOVE(scb, links.le); |
| 5863 | if (col_idx != AHD_NEVER_COL_IDX |
| 5864 | && (scb->col_scb != NULL) |
| 5865 | && (scb->col_scb->flags & SCB_ACTIVE) == 0) { |
| 5866 | LIST_REMOVE(scb->col_scb, links.le); |
| 5867 | ahd_add_col_list(ahd, scb->col_scb, col_idx); |
| 5868 | } |
| 5869 | found: |
| 5870 | scb->flags |= SCB_ACTIVE; |
| 5871 | return (scb); |
| 5872 | } |
| 5873 | |
| 5874 | /* |
| 5875 | * Return an SCB resource to the free list. |
| 5876 | */ |
| 5877 | void |
| 5878 | ahd_free_scb(struct ahd_softc *ahd, struct scb *scb) |
| 5879 | { |
| 5880 | |
| 5881 | /* Clean up for the next user */ |
| 5882 | scb->flags = SCB_FLAG_NONE; |
| 5883 | scb->hscb->control = 0; |
| 5884 | ahd->scb_data.scbindex[SCB_GET_TAG(scb)] = NULL; |
| 5885 | |
| 5886 | if (scb->col_scb == NULL) { |
| 5887 | |
| 5888 | /* |
| 5889 | * No collision possible. Just free normally. |
| 5890 | */ |
| 5891 | LIST_INSERT_HEAD(&ahd->scb_data.any_dev_free_scb_list, |
| 5892 | scb, links.le); |
| 5893 | } else if ((scb->col_scb->flags & SCB_ON_COL_LIST) != 0) { |
| 5894 | |
| 5895 | /* |
| 5896 | * The SCB we might have collided with is on |
| 5897 | * a free collision list. Put both SCBs on |
| 5898 | * the generic list. |
| 5899 | */ |
| 5900 | ahd_rem_col_list(ahd, scb->col_scb); |
| 5901 | LIST_INSERT_HEAD(&ahd->scb_data.any_dev_free_scb_list, |
| 5902 | scb, links.le); |
| 5903 | LIST_INSERT_HEAD(&ahd->scb_data.any_dev_free_scb_list, |
| 5904 | scb->col_scb, links.le); |
| 5905 | } else if ((scb->col_scb->flags |
| 5906 | & (SCB_PACKETIZED|SCB_ACTIVE)) == SCB_ACTIVE |
| 5907 | && (scb->col_scb->hscb->control & TAG_ENB) != 0) { |
| 5908 | |
| 5909 | /* |
| 5910 | * The SCB we might collide with on the next allocation |
| 5911 | * is still active in a non-packetized, tagged, context. |
| 5912 | * Put us on the SCB collision list. |
| 5913 | */ |
| 5914 | ahd_add_col_list(ahd, scb, |
| 5915 | AHD_GET_SCB_COL_IDX(ahd, scb->col_scb)); |
| 5916 | } else { |
| 5917 | /* |
| 5918 | * The SCB we might collide with on the next allocation |
| 5919 | * is either active in a packetized context, or free. |
| 5920 | * Since we can't collide, put this SCB on the generic |
| 5921 | * free list. |
| 5922 | */ |
| 5923 | LIST_INSERT_HEAD(&ahd->scb_data.any_dev_free_scb_list, |
| 5924 | scb, links.le); |
| 5925 | } |
| 5926 | |
| 5927 | ahd_platform_scb_free(ahd, scb); |
| 5928 | } |
| 5929 | |
| 5930 | void |
| 5931 | ahd_alloc_scbs(struct ahd_softc *ahd) |
| 5932 | { |
| 5933 | struct scb_data *scb_data; |
| 5934 | struct scb *next_scb; |
| 5935 | struct hardware_scb *hscb; |
| 5936 | struct map_node *hscb_map; |
| 5937 | struct map_node *sg_map; |
| 5938 | struct map_node *sense_map; |
| 5939 | uint8_t *segs; |
| 5940 | uint8_t *sense_data; |
| 5941 | dma_addr_t hscb_busaddr; |
| 5942 | dma_addr_t sg_busaddr; |
| 5943 | dma_addr_t sense_busaddr; |
| 5944 | int newcount; |
| 5945 | int i; |
| 5946 | |
| 5947 | scb_data = &ahd->scb_data; |
| 5948 | if (scb_data->numscbs >= AHD_SCB_MAX_ALLOC) |
| 5949 | /* Can't allocate any more */ |
| 5950 | return; |
| 5951 | |
| 5952 | if (scb_data->scbs_left != 0) { |
| 5953 | int offset; |
| 5954 | |
| 5955 | offset = (PAGE_SIZE / sizeof(*hscb)) - scb_data->scbs_left; |
| 5956 | hscb_map = SLIST_FIRST(&scb_data->hscb_maps); |
| 5957 | hscb = &((struct hardware_scb *)hscb_map->vaddr)[offset]; |
| 5958 | hscb_busaddr = hscb_map->physaddr + (offset * sizeof(*hscb)); |
| 5959 | } else { |
| 5960 | hscb_map = malloc(sizeof(*hscb_map), M_DEVBUF, M_NOWAIT); |
| 5961 | |
| 5962 | if (hscb_map == NULL) |
| 5963 | return; |
| 5964 | |
| 5965 | /* Allocate the next batch of hardware SCBs */ |
| 5966 | if (ahd_dmamem_alloc(ahd, scb_data->hscb_dmat, |
| 5967 | (void **)&hscb_map->vaddr, |
| 5968 | BUS_DMA_NOWAIT, &hscb_map->dmamap) != 0) { |
| 5969 | free(hscb_map, M_DEVBUF); |
| 5970 | return; |
| 5971 | } |
| 5972 | |
| 5973 | SLIST_INSERT_HEAD(&scb_data->hscb_maps, hscb_map, links); |
| 5974 | |
| 5975 | ahd_dmamap_load(ahd, scb_data->hscb_dmat, hscb_map->dmamap, |
| 5976 | hscb_map->vaddr, PAGE_SIZE, ahd_dmamap_cb, |
| 5977 | &hscb_map->physaddr, /*flags*/0); |
| 5978 | |
| 5979 | hscb = (struct hardware_scb *)hscb_map->vaddr; |
| 5980 | hscb_busaddr = hscb_map->physaddr; |
| 5981 | scb_data->scbs_left = PAGE_SIZE / sizeof(*hscb); |
| 5982 | } |
| 5983 | |
| 5984 | if (scb_data->sgs_left != 0) { |
| 5985 | int offset; |
| 5986 | |
| 5987 | offset = ((ahd_sglist_allocsize(ahd) / ahd_sglist_size(ahd)) |
| 5988 | - scb_data->sgs_left) * ahd_sglist_size(ahd); |
| 5989 | sg_map = SLIST_FIRST(&scb_data->sg_maps); |
| 5990 | segs = sg_map->vaddr + offset; |
| 5991 | sg_busaddr = sg_map->physaddr + offset; |
| 5992 | } else { |
| 5993 | sg_map = malloc(sizeof(*sg_map), M_DEVBUF, M_NOWAIT); |
| 5994 | |
| 5995 | if (sg_map == NULL) |
| 5996 | return; |
| 5997 | |
| 5998 | /* Allocate the next batch of S/G lists */ |
| 5999 | if (ahd_dmamem_alloc(ahd, scb_data->sg_dmat, |
| 6000 | (void **)&sg_map->vaddr, |
| 6001 | BUS_DMA_NOWAIT, &sg_map->dmamap) != 0) { |
| 6002 | free(sg_map, M_DEVBUF); |
| 6003 | return; |
| 6004 | } |
| 6005 | |
| 6006 | SLIST_INSERT_HEAD(&scb_data->sg_maps, sg_map, links); |
| 6007 | |
| 6008 | ahd_dmamap_load(ahd, scb_data->sg_dmat, sg_map->dmamap, |
| 6009 | sg_map->vaddr, ahd_sglist_allocsize(ahd), |
| 6010 | ahd_dmamap_cb, &sg_map->physaddr, /*flags*/0); |
| 6011 | |
| 6012 | segs = sg_map->vaddr; |
| 6013 | sg_busaddr = sg_map->physaddr; |
| 6014 | scb_data->sgs_left = |
| 6015 | ahd_sglist_allocsize(ahd) / ahd_sglist_size(ahd); |
| 6016 | #ifdef AHD_DEBUG |
| 6017 | if (ahd_debug & AHD_SHOW_MEMORY) |
| 6018 | printf("Mapped SG data\n"); |
| 6019 | #endif |
| 6020 | } |
| 6021 | |
| 6022 | if (scb_data->sense_left != 0) { |
| 6023 | int offset; |
| 6024 | |
| 6025 | offset = PAGE_SIZE - (AHD_SENSE_BUFSIZE * scb_data->sense_left); |
| 6026 | sense_map = SLIST_FIRST(&scb_data->sense_maps); |
| 6027 | sense_data = sense_map->vaddr + offset; |
| 6028 | sense_busaddr = sense_map->physaddr + offset; |
| 6029 | } else { |
| 6030 | sense_map = malloc(sizeof(*sense_map), M_DEVBUF, M_NOWAIT); |
| 6031 | |
| 6032 | if (sense_map == NULL) |
| 6033 | return; |
| 6034 | |
| 6035 | /* Allocate the next batch of sense buffers */ |
| 6036 | if (ahd_dmamem_alloc(ahd, scb_data->sense_dmat, |
| 6037 | (void **)&sense_map->vaddr, |
| 6038 | BUS_DMA_NOWAIT, &sense_map->dmamap) != 0) { |
| 6039 | free(sense_map, M_DEVBUF); |
| 6040 | return; |
| 6041 | } |
| 6042 | |
| 6043 | SLIST_INSERT_HEAD(&scb_data->sense_maps, sense_map, links); |
| 6044 | |
| 6045 | ahd_dmamap_load(ahd, scb_data->sense_dmat, sense_map->dmamap, |
| 6046 | sense_map->vaddr, PAGE_SIZE, ahd_dmamap_cb, |
| 6047 | &sense_map->physaddr, /*flags*/0); |
| 6048 | |
| 6049 | sense_data = sense_map->vaddr; |
| 6050 | sense_busaddr = sense_map->physaddr; |
| 6051 | scb_data->sense_left = PAGE_SIZE / AHD_SENSE_BUFSIZE; |
| 6052 | #ifdef AHD_DEBUG |
| 6053 | if (ahd_debug & AHD_SHOW_MEMORY) |
| 6054 | printf("Mapped sense data\n"); |
| 6055 | #endif |
| 6056 | } |
| 6057 | |
| 6058 | newcount = MIN(scb_data->sense_left, scb_data->scbs_left); |
| 6059 | newcount = MIN(newcount, scb_data->sgs_left); |
| 6060 | newcount = MIN(newcount, (AHD_SCB_MAX_ALLOC - scb_data->numscbs)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6061 | for (i = 0; i < newcount; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6062 | struct scb_platform_data *pdata; |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 6063 | u_int col_tag; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6064 | #ifndef __linux__ |
| 6065 | int error; |
| 6066 | #endif |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 6067 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6068 | next_scb = (struct scb *)malloc(sizeof(*next_scb), |
| 6069 | M_DEVBUF, M_NOWAIT); |
| 6070 | if (next_scb == NULL) |
| 6071 | break; |
| 6072 | |
| 6073 | pdata = (struct scb_platform_data *)malloc(sizeof(*pdata), |
| 6074 | M_DEVBUF, M_NOWAIT); |
| 6075 | if (pdata == NULL) { |
| 6076 | free(next_scb, M_DEVBUF); |
| 6077 | break; |
| 6078 | } |
| 6079 | next_scb->platform_data = pdata; |
| 6080 | next_scb->hscb_map = hscb_map; |
| 6081 | next_scb->sg_map = sg_map; |
| 6082 | next_scb->sense_map = sense_map; |
| 6083 | next_scb->sg_list = segs; |
| 6084 | next_scb->sense_data = sense_data; |
| 6085 | next_scb->sense_busaddr = sense_busaddr; |
| 6086 | memset(hscb, 0, sizeof(*hscb)); |
| 6087 | next_scb->hscb = hscb; |
| 6088 | hscb->hscb_busaddr = ahd_htole32(hscb_busaddr); |
| 6089 | |
| 6090 | /* |
| 6091 | * The sequencer always starts with the second entry. |
| 6092 | * The first entry is embedded in the scb. |
| 6093 | */ |
| 6094 | next_scb->sg_list_busaddr = sg_busaddr; |
| 6095 | if ((ahd->flags & AHD_64BIT_ADDRESSING) != 0) |
| 6096 | next_scb->sg_list_busaddr |
| 6097 | += sizeof(struct ahd_dma64_seg); |
| 6098 | else |
| 6099 | next_scb->sg_list_busaddr += sizeof(struct ahd_dma_seg); |
| 6100 | next_scb->ahd_softc = ahd; |
| 6101 | next_scb->flags = SCB_FLAG_NONE; |
| 6102 | #ifndef __linux__ |
| 6103 | error = ahd_dmamap_create(ahd, ahd->buffer_dmat, /*flags*/0, |
| 6104 | &next_scb->dmamap); |
| 6105 | if (error != 0) { |
| 6106 | free(next_scb, M_DEVBUF); |
| 6107 | free(pdata, M_DEVBUF); |
| 6108 | break; |
| 6109 | } |
| 6110 | #endif |
| 6111 | next_scb->hscb->tag = ahd_htole16(scb_data->numscbs); |
| 6112 | col_tag = scb_data->numscbs ^ 0x100; |
| 6113 | next_scb->col_scb = ahd_find_scb_by_tag(ahd, col_tag); |
| 6114 | if (next_scb->col_scb != NULL) |
| 6115 | next_scb->col_scb->col_scb = next_scb; |
| 6116 | ahd_free_scb(ahd, next_scb); |
| 6117 | hscb++; |
| 6118 | hscb_busaddr += sizeof(*hscb); |
| 6119 | segs += ahd_sglist_size(ahd); |
| 6120 | sg_busaddr += ahd_sglist_size(ahd); |
| 6121 | sense_data += AHD_SENSE_BUFSIZE; |
| 6122 | sense_busaddr += AHD_SENSE_BUFSIZE; |
| 6123 | scb_data->numscbs++; |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 6124 | scb_data->sense_left--; |
| 6125 | scb_data->scbs_left--; |
| 6126 | scb_data->sgs_left--; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6127 | } |
| 6128 | } |
| 6129 | |
| 6130 | void |
| 6131 | ahd_controller_info(struct ahd_softc *ahd, char *buf) |
| 6132 | { |
| 6133 | const char *speed; |
| 6134 | const char *type; |
| 6135 | int len; |
| 6136 | |
| 6137 | len = sprintf(buf, "%s: ", ahd_chip_names[ahd->chip & AHD_CHIPID_MASK]); |
| 6138 | buf += len; |
| 6139 | |
| 6140 | speed = "Ultra320 "; |
| 6141 | if ((ahd->features & AHD_WIDE) != 0) { |
| 6142 | type = "Wide "; |
| 6143 | } else { |
| 6144 | type = "Single "; |
| 6145 | } |
| 6146 | len = sprintf(buf, "%s%sChannel %c, SCSI Id=%d, ", |
| 6147 | speed, type, ahd->channel, ahd->our_id); |
| 6148 | buf += len; |
| 6149 | |
| 6150 | sprintf(buf, "%s, %d SCBs", ahd->bus_description, |
| 6151 | ahd->scb_data.maxhscbs); |
| 6152 | } |
| 6153 | |
| 6154 | static const char *channel_strings[] = { |
| 6155 | "Primary Low", |
| 6156 | "Primary High", |
| 6157 | "Secondary Low", |
| 6158 | "Secondary High" |
| 6159 | }; |
| 6160 | |
| 6161 | static const char *termstat_strings[] = { |
| 6162 | "Terminated Correctly", |
| 6163 | "Over Terminated", |
| 6164 | "Under Terminated", |
| 6165 | "Not Configured" |
| 6166 | }; |
| 6167 | |
| 6168 | /* |
| 6169 | * Start the board, ready for normal operation |
| 6170 | */ |
| 6171 | int |
| 6172 | ahd_init(struct ahd_softc *ahd) |
| 6173 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6174 | uint8_t *next_vaddr; |
| 6175 | dma_addr_t next_baddr; |
| 6176 | size_t driver_data_size; |
| 6177 | int i; |
| 6178 | int error; |
| 6179 | u_int warn_user; |
| 6180 | uint8_t current_sensing; |
| 6181 | uint8_t fstat; |
| 6182 | |
| 6183 | AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); |
| 6184 | |
| 6185 | ahd->stack_size = ahd_probe_stack_size(ahd); |
| 6186 | ahd->saved_stack = malloc(ahd->stack_size * sizeof(uint16_t), |
| 6187 | M_DEVBUF, M_NOWAIT); |
| 6188 | if (ahd->saved_stack == NULL) |
| 6189 | return (ENOMEM); |
| 6190 | |
| 6191 | /* |
| 6192 | * Verify that the compiler hasn't over-agressively |
| 6193 | * padded important structures. |
| 6194 | */ |
| 6195 | if (sizeof(struct hardware_scb) != 64) |
| 6196 | panic("Hardware SCB size is incorrect"); |
| 6197 | |
| 6198 | #ifdef AHD_DEBUG |
| 6199 | if ((ahd_debug & AHD_DEBUG_SEQUENCER) != 0) |
| 6200 | ahd->flags |= AHD_SEQUENCER_DEBUG; |
| 6201 | #endif |
| 6202 | |
| 6203 | /* |
| 6204 | * Default to allowing initiator operations. |
| 6205 | */ |
| 6206 | ahd->flags |= AHD_INITIATORROLE; |
| 6207 | |
| 6208 | /* |
| 6209 | * Only allow target mode features if this unit has them enabled. |
| 6210 | */ |
| 6211 | if ((AHD_TMODE_ENABLE & (0x1 << ahd->unit)) == 0) |
| 6212 | ahd->features &= ~AHD_TARGETMODE; |
| 6213 | |
| 6214 | #ifndef __linux__ |
| 6215 | /* DMA tag for mapping buffers into device visible space. */ |
| 6216 | if (ahd_dma_tag_create(ahd, ahd->parent_dmat, /*alignment*/1, |
| 6217 | /*boundary*/BUS_SPACE_MAXADDR_32BIT + 1, |
| 6218 | /*lowaddr*/ahd->flags & AHD_39BIT_ADDRESSING |
| 6219 | ? (dma_addr_t)0x7FFFFFFFFFULL |
| 6220 | : BUS_SPACE_MAXADDR_32BIT, |
| 6221 | /*highaddr*/BUS_SPACE_MAXADDR, |
| 6222 | /*filter*/NULL, /*filterarg*/NULL, |
| 6223 | /*maxsize*/(AHD_NSEG - 1) * PAGE_SIZE, |
| 6224 | /*nsegments*/AHD_NSEG, |
| 6225 | /*maxsegsz*/AHD_MAXTRANSFER_SIZE, |
| 6226 | /*flags*/BUS_DMA_ALLOCNOW, |
| 6227 | &ahd->buffer_dmat) != 0) { |
| 6228 | return (ENOMEM); |
| 6229 | } |
| 6230 | #endif |
| 6231 | |
| 6232 | ahd->init_level++; |
| 6233 | |
| 6234 | /* |
| 6235 | * DMA tag for our command fifos and other data in system memory |
| 6236 | * the card's sequencer must be able to access. For initiator |
| 6237 | * roles, we need to allocate space for the qoutfifo. When providing |
| 6238 | * for the target mode role, we must additionally provide space for |
| 6239 | * the incoming target command fifo. |
| 6240 | */ |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 6241 | driver_data_size = AHD_SCB_MAX * sizeof(*ahd->qoutfifo) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6242 | + sizeof(struct hardware_scb); |
| 6243 | if ((ahd->features & AHD_TARGETMODE) != 0) |
| 6244 | driver_data_size += AHD_TMODE_CMDS * sizeof(struct target_cmd); |
| 6245 | if ((ahd->bugs & AHD_PKT_BITBUCKET_BUG) != 0) |
| 6246 | driver_data_size += PKT_OVERRUN_BUFSIZE; |
| 6247 | if (ahd_dma_tag_create(ahd, ahd->parent_dmat, /*alignment*/1, |
| 6248 | /*boundary*/BUS_SPACE_MAXADDR_32BIT + 1, |
| 6249 | /*lowaddr*/BUS_SPACE_MAXADDR_32BIT, |
| 6250 | /*highaddr*/BUS_SPACE_MAXADDR, |
| 6251 | /*filter*/NULL, /*filterarg*/NULL, |
| 6252 | driver_data_size, |
| 6253 | /*nsegments*/1, |
| 6254 | /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT, |
| 6255 | /*flags*/0, &ahd->shared_data_dmat) != 0) { |
| 6256 | return (ENOMEM); |
| 6257 | } |
| 6258 | |
| 6259 | ahd->init_level++; |
| 6260 | |
| 6261 | /* Allocation of driver data */ |
| 6262 | if (ahd_dmamem_alloc(ahd, ahd->shared_data_dmat, |
Hannes Reinecke | 66a0683 | 2006-01-12 12:05:46 +0100 | [diff] [blame] | 6263 | (void **)&ahd->shared_data_map.vaddr, |
| 6264 | BUS_DMA_NOWAIT, |
| 6265 | &ahd->shared_data_map.dmamap) != 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6266 | return (ENOMEM); |
| 6267 | } |
| 6268 | |
| 6269 | ahd->init_level++; |
| 6270 | |
| 6271 | /* And permanently map it in */ |
Hannes Reinecke | 66a0683 | 2006-01-12 12:05:46 +0100 | [diff] [blame] | 6272 | ahd_dmamap_load(ahd, ahd->shared_data_dmat, ahd->shared_data_map.dmamap, |
| 6273 | ahd->shared_data_map.vaddr, driver_data_size, |
| 6274 | ahd_dmamap_cb, &ahd->shared_data_map.physaddr, |
| 6275 | /*flags*/0); |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 6276 | ahd->qoutfifo = (struct ahd_completion *)ahd->shared_data_map.vaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6277 | next_vaddr = (uint8_t *)&ahd->qoutfifo[AHD_QOUT_SIZE]; |
Hannes Reinecke | 66a0683 | 2006-01-12 12:05:46 +0100 | [diff] [blame] | 6278 | next_baddr = ahd->shared_data_map.physaddr |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 6279 | + AHD_QOUT_SIZE*sizeof(struct ahd_completion); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6280 | if ((ahd->features & AHD_TARGETMODE) != 0) { |
| 6281 | ahd->targetcmds = (struct target_cmd *)next_vaddr; |
| 6282 | next_vaddr += AHD_TMODE_CMDS * sizeof(struct target_cmd); |
| 6283 | next_baddr += AHD_TMODE_CMDS * sizeof(struct target_cmd); |
| 6284 | } |
| 6285 | |
| 6286 | if ((ahd->bugs & AHD_PKT_BITBUCKET_BUG) != 0) { |
| 6287 | ahd->overrun_buf = next_vaddr; |
| 6288 | next_vaddr += PKT_OVERRUN_BUFSIZE; |
| 6289 | next_baddr += PKT_OVERRUN_BUFSIZE; |
| 6290 | } |
| 6291 | |
| 6292 | /* |
| 6293 | * We need one SCB to serve as the "next SCB". Since the |
| 6294 | * tag identifier in this SCB will never be used, there is |
| 6295 | * no point in using a valid HSCB tag from an SCB pulled from |
| 6296 | * the standard free pool. So, we allocate this "sentinel" |
| 6297 | * specially from the DMA safe memory chunk used for the QOUTFIFO. |
| 6298 | */ |
| 6299 | ahd->next_queued_hscb = (struct hardware_scb *)next_vaddr; |
Hannes Reinecke | 66a0683 | 2006-01-12 12:05:46 +0100 | [diff] [blame] | 6300 | ahd->next_queued_hscb_map = &ahd->shared_data_map; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6301 | ahd->next_queued_hscb->hscb_busaddr = ahd_htole32(next_baddr); |
| 6302 | |
| 6303 | ahd->init_level++; |
| 6304 | |
| 6305 | /* Allocate SCB data now that buffer_dmat is initialized */ |
| 6306 | if (ahd_init_scbdata(ahd) != 0) |
| 6307 | return (ENOMEM); |
| 6308 | |
| 6309 | if ((ahd->flags & AHD_INITIATORROLE) == 0) |
| 6310 | ahd->flags &= ~AHD_RESET_BUS_A; |
| 6311 | |
| 6312 | /* |
| 6313 | * Before committing these settings to the chip, give |
| 6314 | * the OSM one last chance to modify our configuration. |
| 6315 | */ |
| 6316 | ahd_platform_init(ahd); |
| 6317 | |
| 6318 | /* Bring up the chip. */ |
| 6319 | ahd_chip_init(ahd); |
| 6320 | |
| 6321 | AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); |
| 6322 | |
| 6323 | if ((ahd->flags & AHD_CURRENT_SENSING) == 0) |
| 6324 | goto init_done; |
| 6325 | |
| 6326 | /* |
| 6327 | * Verify termination based on current draw and |
| 6328 | * warn user if the bus is over/under terminated. |
| 6329 | */ |
| 6330 | error = ahd_write_flexport(ahd, FLXADDR_ROMSTAT_CURSENSECTL, |
| 6331 | CURSENSE_ENB); |
| 6332 | if (error != 0) { |
| 6333 | printf("%s: current sensing timeout 1\n", ahd_name(ahd)); |
| 6334 | goto init_done; |
| 6335 | } |
| 6336 | for (i = 20, fstat = FLX_FSTAT_BUSY; |
| 6337 | (fstat & FLX_FSTAT_BUSY) != 0 && i; i--) { |
| 6338 | error = ahd_read_flexport(ahd, FLXADDR_FLEXSTAT, &fstat); |
| 6339 | if (error != 0) { |
| 6340 | printf("%s: current sensing timeout 2\n", |
| 6341 | ahd_name(ahd)); |
| 6342 | goto init_done; |
| 6343 | } |
| 6344 | } |
| 6345 | if (i == 0) { |
| 6346 | printf("%s: Timedout during current-sensing test\n", |
| 6347 | ahd_name(ahd)); |
| 6348 | goto init_done; |
| 6349 | } |
| 6350 | |
| 6351 | /* Latch Current Sensing status. */ |
| 6352 | error = ahd_read_flexport(ahd, FLXADDR_CURRENT_STAT, ¤t_sensing); |
| 6353 | if (error != 0) { |
| 6354 | printf("%s: current sensing timeout 3\n", ahd_name(ahd)); |
| 6355 | goto init_done; |
| 6356 | } |
| 6357 | |
| 6358 | /* Diable current sensing. */ |
| 6359 | ahd_write_flexport(ahd, FLXADDR_ROMSTAT_CURSENSECTL, 0); |
| 6360 | |
| 6361 | #ifdef AHD_DEBUG |
| 6362 | if ((ahd_debug & AHD_SHOW_TERMCTL) != 0) { |
| 6363 | printf("%s: current_sensing == 0x%x\n", |
| 6364 | ahd_name(ahd), current_sensing); |
| 6365 | } |
| 6366 | #endif |
| 6367 | warn_user = 0; |
| 6368 | for (i = 0; i < 4; i++, current_sensing >>= FLX_CSTAT_SHIFT) { |
| 6369 | u_int term_stat; |
| 6370 | |
| 6371 | term_stat = (current_sensing & FLX_CSTAT_MASK); |
| 6372 | switch (term_stat) { |
| 6373 | case FLX_CSTAT_OVER: |
| 6374 | case FLX_CSTAT_UNDER: |
| 6375 | warn_user++; |
| 6376 | case FLX_CSTAT_INVALID: |
| 6377 | case FLX_CSTAT_OKAY: |
| 6378 | if (warn_user == 0 && bootverbose == 0) |
| 6379 | break; |
| 6380 | printf("%s: %s Channel %s\n", ahd_name(ahd), |
| 6381 | channel_strings[i], termstat_strings[term_stat]); |
| 6382 | break; |
| 6383 | } |
| 6384 | } |
| 6385 | if (warn_user) { |
| 6386 | printf("%s: WARNING. Termination is not configured correctly.\n" |
| 6387 | "%s: WARNING. SCSI bus operations may FAIL.\n", |
| 6388 | ahd_name(ahd), ahd_name(ahd)); |
| 6389 | } |
| 6390 | init_done: |
| 6391 | ahd_restart(ahd); |
| 6392 | ahd_timer_reset(&ahd->stat_timer, AHD_STAT_UPDATE_US, |
| 6393 | ahd_stat_timer, ahd); |
| 6394 | return (0); |
| 6395 | } |
| 6396 | |
| 6397 | /* |
| 6398 | * (Re)initialize chip state after a chip reset. |
| 6399 | */ |
| 6400 | static void |
| 6401 | ahd_chip_init(struct ahd_softc *ahd) |
| 6402 | { |
| 6403 | uint32_t busaddr; |
| 6404 | u_int sxfrctl1; |
| 6405 | u_int scsiseq_template; |
| 6406 | u_int wait; |
| 6407 | u_int i; |
| 6408 | u_int target; |
| 6409 | |
| 6410 | ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); |
| 6411 | /* |
| 6412 | * Take the LED out of diagnostic mode |
| 6413 | */ |
| 6414 | ahd_outb(ahd, SBLKCTL, ahd_inb(ahd, SBLKCTL) & ~(DIAGLEDEN|DIAGLEDON)); |
| 6415 | |
| 6416 | /* |
| 6417 | * Return HS_MAILBOX to its default value. |
| 6418 | */ |
| 6419 | ahd->hs_mailbox = 0; |
| 6420 | ahd_outb(ahd, HS_MAILBOX, 0); |
| 6421 | |
| 6422 | /* Set the SCSI Id, SXFRCTL0, SXFRCTL1, and SIMODE1. */ |
| 6423 | ahd_outb(ahd, IOWNID, ahd->our_id); |
| 6424 | ahd_outb(ahd, TOWNID, ahd->our_id); |
| 6425 | sxfrctl1 = (ahd->flags & AHD_TERM_ENB_A) != 0 ? STPWEN : 0; |
| 6426 | sxfrctl1 |= (ahd->flags & AHD_SPCHK_ENB_A) != 0 ? ENSPCHK : 0; |
| 6427 | if ((ahd->bugs & AHD_LONG_SETIMO_BUG) |
| 6428 | && (ahd->seltime != STIMESEL_MIN)) { |
| 6429 | /* |
| 6430 | * The selection timer duration is twice as long |
| 6431 | * as it should be. Halve it by adding "1" to |
| 6432 | * the user specified setting. |
| 6433 | */ |
| 6434 | sxfrctl1 |= ahd->seltime + STIMESEL_BUG_ADJ; |
| 6435 | } else { |
| 6436 | sxfrctl1 |= ahd->seltime; |
| 6437 | } |
| 6438 | |
| 6439 | ahd_outb(ahd, SXFRCTL0, DFON); |
| 6440 | ahd_outb(ahd, SXFRCTL1, sxfrctl1|ahd->seltime|ENSTIMER|ACTNEGEN); |
| 6441 | ahd_outb(ahd, SIMODE1, ENSELTIMO|ENSCSIRST|ENSCSIPERR); |
| 6442 | |
| 6443 | /* |
| 6444 | * Now that termination is set, wait for up |
| 6445 | * to 500ms for our transceivers to settle. If |
| 6446 | * the adapter does not have a cable attached, |
| 6447 | * the transceivers may never settle, so don't |
| 6448 | * complain if we fail here. |
| 6449 | */ |
| 6450 | for (wait = 10000; |
| 6451 | (ahd_inb(ahd, SBLKCTL) & (ENAB40|ENAB20)) == 0 && wait; |
| 6452 | wait--) |
| 6453 | ahd_delay(100); |
| 6454 | |
| 6455 | /* Clear any false bus resets due to the transceivers settling */ |
| 6456 | ahd_outb(ahd, CLRSINT1, CLRSCSIRSTI); |
| 6457 | ahd_outb(ahd, CLRINT, CLRSCSIINT); |
| 6458 | |
| 6459 | /* Initialize mode specific S/G state. */ |
| 6460 | for (i = 0; i < 2; i++) { |
| 6461 | ahd_set_modes(ahd, AHD_MODE_DFF0 + i, AHD_MODE_DFF0 + i); |
| 6462 | ahd_outb(ahd, LONGJMP_ADDR + 1, INVALID_ADDR); |
| 6463 | ahd_outb(ahd, SG_STATE, 0); |
| 6464 | ahd_outb(ahd, CLRSEQINTSRC, 0xFF); |
| 6465 | ahd_outb(ahd, SEQIMODE, |
| 6466 | ENSAVEPTRS|ENCFG4DATA|ENCFG4ISTAT |
| 6467 | |ENCFG4TSTAT|ENCFG4ICMD|ENCFG4TCMD); |
| 6468 | } |
| 6469 | |
| 6470 | ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG); |
| 6471 | ahd_outb(ahd, DSCOMMAND0, ahd_inb(ahd, DSCOMMAND0)|MPARCKEN|CACHETHEN); |
| 6472 | ahd_outb(ahd, DFF_THRSH, RD_DFTHRSH_75|WR_DFTHRSH_75); |
| 6473 | ahd_outb(ahd, SIMODE0, ENIOERR|ENOVERRUN); |
| 6474 | ahd_outb(ahd, SIMODE3, ENNTRAMPERR|ENOSRAMPERR); |
| 6475 | if ((ahd->bugs & AHD_BUSFREEREV_BUG) != 0) { |
| 6476 | ahd_outb(ahd, OPTIONMODE, AUTOACKEN|AUTO_MSGOUT_DE); |
| 6477 | } else { |
| 6478 | ahd_outb(ahd, OPTIONMODE, AUTOACKEN|BUSFREEREV|AUTO_MSGOUT_DE); |
| 6479 | } |
| 6480 | ahd_outb(ahd, SCSCHKN, CURRFIFODEF|WIDERESEN|SHVALIDSTDIS); |
| 6481 | if ((ahd->chip & AHD_BUS_MASK) == AHD_PCIX) |
| 6482 | /* |
| 6483 | * Do not issue a target abort when a split completion |
| 6484 | * error occurs. Let our PCIX interrupt handler deal |
| 6485 | * with it instead. H2A4 Razor #625 |
| 6486 | */ |
| 6487 | ahd_outb(ahd, PCIXCTL, ahd_inb(ahd, PCIXCTL) | SPLTSTADIS); |
| 6488 | |
| 6489 | if ((ahd->bugs & AHD_LQOOVERRUN_BUG) != 0) |
| 6490 | ahd_outb(ahd, LQOSCSCTL, LQONOCHKOVER); |
| 6491 | |
| 6492 | /* |
| 6493 | * Tweak IOCELL settings. |
| 6494 | */ |
| 6495 | if ((ahd->flags & AHD_HP_BOARD) != 0) { |
| 6496 | for (i = 0; i < NUMDSPS; i++) { |
| 6497 | ahd_outb(ahd, DSPSELECT, i); |
| 6498 | ahd_outb(ahd, WRTBIASCTL, WRTBIASCTL_HP_DEFAULT); |
| 6499 | } |
| 6500 | #ifdef AHD_DEBUG |
| 6501 | if ((ahd_debug & AHD_SHOW_MISC) != 0) |
| 6502 | printf("%s: WRTBIASCTL now 0x%x\n", ahd_name(ahd), |
| 6503 | WRTBIASCTL_HP_DEFAULT); |
| 6504 | #endif |
| 6505 | } |
| 6506 | ahd_setup_iocell_workaround(ahd); |
| 6507 | |
| 6508 | /* |
| 6509 | * Enable LQI Manager interrupts. |
| 6510 | */ |
| 6511 | ahd_outb(ahd, LQIMODE1, ENLQIPHASE_LQ|ENLQIPHASE_NLQ|ENLIQABORT |
| 6512 | | ENLQICRCI_LQ|ENLQICRCI_NLQ|ENLQIBADLQI |
| 6513 | | ENLQIOVERI_LQ|ENLQIOVERI_NLQ); |
| 6514 | ahd_outb(ahd, LQOMODE0, ENLQOATNLQ|ENLQOATNPKT|ENLQOTCRC); |
| 6515 | /* |
Hannes Reinecke | 53467e6 | 2006-01-24 10:43:26 +0100 | [diff] [blame] | 6516 | * We choose to have the sequencer catch LQOPHCHGINPKT errors |
| 6517 | * manually for the command phase at the start of a packetized |
| 6518 | * selection case. ENLQOBUSFREE should be made redundant by |
| 6519 | * the BUSFREE interrupt, but it seems that some LQOBUSFREE |
| 6520 | * events fail to assert the BUSFREE interrupt so we must |
| 6521 | * also enable LQOBUSFREE interrupts. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6522 | */ |
Hannes Reinecke | 53467e6 | 2006-01-24 10:43:26 +0100 | [diff] [blame] | 6523 | ahd_outb(ahd, LQOMODE1, ENLQOBUSFREE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6524 | |
| 6525 | /* |
| 6526 | * Setup sequencer interrupt handlers. |
| 6527 | */ |
| 6528 | ahd_outw(ahd, INTVEC1_ADDR, ahd_resolve_seqaddr(ahd, LABEL_seq_isr)); |
| 6529 | ahd_outw(ahd, INTVEC2_ADDR, ahd_resolve_seqaddr(ahd, LABEL_timer_isr)); |
| 6530 | |
| 6531 | /* |
| 6532 | * Setup SCB Offset registers. |
| 6533 | */ |
| 6534 | if ((ahd->bugs & AHD_PKT_LUN_BUG) != 0) { |
| 6535 | ahd_outb(ahd, LUNPTR, offsetof(struct hardware_scb, |
| 6536 | pkt_long_lun)); |
| 6537 | } else { |
| 6538 | ahd_outb(ahd, LUNPTR, offsetof(struct hardware_scb, lun)); |
| 6539 | } |
| 6540 | ahd_outb(ahd, CMDLENPTR, offsetof(struct hardware_scb, cdb_len)); |
| 6541 | ahd_outb(ahd, ATTRPTR, offsetof(struct hardware_scb, task_attribute)); |
| 6542 | ahd_outb(ahd, FLAGPTR, offsetof(struct hardware_scb, task_management)); |
| 6543 | ahd_outb(ahd, CMDPTR, offsetof(struct hardware_scb, |
| 6544 | shared_data.idata.cdb)); |
| 6545 | ahd_outb(ahd, QNEXTPTR, |
| 6546 | offsetof(struct hardware_scb, next_hscb_busaddr)); |
| 6547 | ahd_outb(ahd, ABRTBITPTR, MK_MESSAGE_BIT_OFFSET); |
| 6548 | ahd_outb(ahd, ABRTBYTEPTR, offsetof(struct hardware_scb, control)); |
| 6549 | if ((ahd->bugs & AHD_PKT_LUN_BUG) != 0) { |
| 6550 | ahd_outb(ahd, LUNLEN, |
| 6551 | sizeof(ahd->next_queued_hscb->pkt_long_lun) - 1); |
| 6552 | } else { |
| 6553 | ahd_outb(ahd, LUNLEN, LUNLEN_SINGLE_LEVEL_LUN); |
| 6554 | } |
| 6555 | ahd_outb(ahd, CDBLIMIT, SCB_CDB_LEN_PTR - 1); |
| 6556 | ahd_outb(ahd, MAXCMD, 0xFF); |
| 6557 | ahd_outb(ahd, SCBAUTOPTR, |
| 6558 | AUSCBPTR_EN | offsetof(struct hardware_scb, tag)); |
| 6559 | |
| 6560 | /* We haven't been enabled for target mode yet. */ |
| 6561 | ahd_outb(ahd, MULTARGID, 0); |
| 6562 | ahd_outb(ahd, MULTARGID + 1, 0); |
| 6563 | |
| 6564 | ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); |
| 6565 | /* Initialize the negotiation table. */ |
| 6566 | if ((ahd->features & AHD_NEW_IOCELL_OPTS) == 0) { |
| 6567 | /* |
| 6568 | * Clear the spare bytes in the neg table to avoid |
| 6569 | * spurious parity errors. |
| 6570 | */ |
| 6571 | for (target = 0; target < AHD_NUM_TARGETS; target++) { |
| 6572 | ahd_outb(ahd, NEGOADDR, target); |
| 6573 | ahd_outb(ahd, ANNEXCOL, AHD_ANNEXCOL_PER_DEV0); |
| 6574 | for (i = 0; i < AHD_NUM_PER_DEV_ANNEXCOLS; i++) |
| 6575 | ahd_outb(ahd, ANNEXDAT, 0); |
| 6576 | } |
| 6577 | } |
| 6578 | for (target = 0; target < AHD_NUM_TARGETS; target++) { |
| 6579 | struct ahd_devinfo devinfo; |
| 6580 | struct ahd_initiator_tinfo *tinfo; |
| 6581 | struct ahd_tmode_tstate *tstate; |
| 6582 | |
| 6583 | tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, |
| 6584 | target, &tstate); |
| 6585 | ahd_compile_devinfo(&devinfo, ahd->our_id, |
| 6586 | target, CAM_LUN_WILDCARD, |
| 6587 | 'A', ROLE_INITIATOR); |
| 6588 | ahd_update_neg_table(ahd, &devinfo, &tinfo->curr); |
| 6589 | } |
| 6590 | |
| 6591 | ahd_outb(ahd, CLRSINT3, NTRAMPERR|OSRAMPERR); |
| 6592 | ahd_outb(ahd, CLRINT, CLRSCSIINT); |
| 6593 | |
| 6594 | #ifdef NEEDS_MORE_TESTING |
| 6595 | /* |
| 6596 | * Always enable abort on incoming L_Qs if this feature is |
| 6597 | * supported. We use this to catch invalid SCB references. |
| 6598 | */ |
| 6599 | if ((ahd->bugs & AHD_ABORT_LQI_BUG) == 0) |
| 6600 | ahd_outb(ahd, LQCTL1, ABORTPENDING); |
| 6601 | else |
| 6602 | #endif |
| 6603 | ahd_outb(ahd, LQCTL1, 0); |
| 6604 | |
| 6605 | /* All of our queues are empty */ |
| 6606 | ahd->qoutfifonext = 0; |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 6607 | ahd->qoutfifonext_valid_tag = QOUTFIFO_ENTRY_VALID; |
| 6608 | ahd_outb(ahd, QOUTFIFO_ENTRY_VALID_TAG, QOUTFIFO_ENTRY_VALID); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6609 | for (i = 0; i < AHD_QOUT_SIZE; i++) |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 6610 | ahd->qoutfifo[i].valid_tag = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6611 | ahd_sync_qoutfifo(ahd, BUS_DMASYNC_PREREAD); |
| 6612 | |
| 6613 | ahd->qinfifonext = 0; |
| 6614 | for (i = 0; i < AHD_QIN_SIZE; i++) |
| 6615 | ahd->qinfifo[i] = SCB_LIST_NULL; |
| 6616 | |
| 6617 | if ((ahd->features & AHD_TARGETMODE) != 0) { |
| 6618 | /* All target command blocks start out invalid. */ |
| 6619 | for (i = 0; i < AHD_TMODE_CMDS; i++) |
| 6620 | ahd->targetcmds[i].cmd_valid = 0; |
| 6621 | ahd_sync_tqinfifo(ahd, BUS_DMASYNC_PREREAD); |
| 6622 | ahd->tqinfifonext = 1; |
| 6623 | ahd_outb(ahd, KERNEL_TQINPOS, ahd->tqinfifonext - 1); |
| 6624 | ahd_outb(ahd, TQINPOS, ahd->tqinfifonext); |
| 6625 | } |
| 6626 | |
| 6627 | /* Initialize Scratch Ram. */ |
| 6628 | ahd_outb(ahd, SEQ_FLAGS, 0); |
| 6629 | ahd_outb(ahd, SEQ_FLAGS2, 0); |
| 6630 | |
| 6631 | /* We don't have any waiting selections */ |
| 6632 | ahd_outw(ahd, WAITING_TID_HEAD, SCB_LIST_NULL); |
| 6633 | ahd_outw(ahd, WAITING_TID_TAIL, SCB_LIST_NULL); |
Hannes Reinecke | 53467e6 | 2006-01-24 10:43:26 +0100 | [diff] [blame] | 6634 | ahd_outw(ahd, MK_MESSAGE_SCB, SCB_LIST_NULL); |
| 6635 | ahd_outw(ahd, MK_MESSAGE_SCSIID, 0xFF); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6636 | for (i = 0; i < AHD_NUM_TARGETS; i++) |
| 6637 | ahd_outw(ahd, WAITING_SCB_TAILS + (2 * i), SCB_LIST_NULL); |
| 6638 | |
| 6639 | /* |
| 6640 | * Nobody is waiting to be DMAed into the QOUTFIFO. |
| 6641 | */ |
| 6642 | ahd_outw(ahd, COMPLETE_SCB_HEAD, SCB_LIST_NULL); |
| 6643 | ahd_outw(ahd, COMPLETE_SCB_DMAINPROG_HEAD, SCB_LIST_NULL); |
| 6644 | ahd_outw(ahd, COMPLETE_DMA_SCB_HEAD, SCB_LIST_NULL); |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 6645 | ahd_outw(ahd, COMPLETE_DMA_SCB_TAIL, SCB_LIST_NULL); |
| 6646 | ahd_outw(ahd, COMPLETE_ON_QFREEZE_HEAD, SCB_LIST_NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6647 | |
| 6648 | /* |
| 6649 | * The Freeze Count is 0. |
| 6650 | */ |
Hannes Reinecke | 66a0683 | 2006-01-12 12:05:46 +0100 | [diff] [blame] | 6651 | ahd->qfreeze_cnt = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6652 | ahd_outw(ahd, QFREEZE_COUNT, 0); |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 6653 | ahd_outw(ahd, KERNEL_QFREEZE_COUNT, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6654 | |
| 6655 | /* |
| 6656 | * Tell the sequencer where it can find our arrays in memory. |
| 6657 | */ |
Hannes Reinecke | 66a0683 | 2006-01-12 12:05:46 +0100 | [diff] [blame] | 6658 | busaddr = ahd->shared_data_map.physaddr; |
Hannes Reinecke | ba62cd2 | 2006-01-12 12:07:02 +0100 | [diff] [blame] | 6659 | ahd_outl(ahd, SHARED_DATA_ADDR, busaddr); |
| 6660 | ahd_outl(ahd, QOUTFIFO_NEXT_ADDR, busaddr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6661 | |
| 6662 | /* |
| 6663 | * Setup the allowed SCSI Sequences based on operational mode. |
| 6664 | * If we are a target, we'll enable select in operations once |
| 6665 | * we've had a lun enabled. |
| 6666 | */ |
| 6667 | scsiseq_template = ENAUTOATNP; |
| 6668 | if ((ahd->flags & AHD_INITIATORROLE) != 0) |
| 6669 | scsiseq_template |= ENRSELI; |
| 6670 | ahd_outb(ahd, SCSISEQ_TEMPLATE, scsiseq_template); |
| 6671 | |
| 6672 | /* There are no busy SCBs yet. */ |
| 6673 | for (target = 0; target < AHD_NUM_TARGETS; target++) { |
| 6674 | int lun; |
| 6675 | |
| 6676 | for (lun = 0; lun < AHD_NUM_LUNS_NONPKT; lun++) |
| 6677 | ahd_unbusy_tcl(ahd, BUILD_TCL_RAW(target, 'A', lun)); |
| 6678 | } |
| 6679 | |
| 6680 | /* |
| 6681 | * Initialize the group code to command length table. |
| 6682 | * Vendor Unique codes are set to 0 so we only capture |
| 6683 | * the first byte of the cdb. These can be overridden |
| 6684 | * when target mode is enabled. |
| 6685 | */ |
| 6686 | ahd_outb(ahd, CMDSIZE_TABLE, 5); |
| 6687 | ahd_outb(ahd, CMDSIZE_TABLE + 1, 9); |
| 6688 | ahd_outb(ahd, CMDSIZE_TABLE + 2, 9); |
| 6689 | ahd_outb(ahd, CMDSIZE_TABLE + 3, 0); |
| 6690 | ahd_outb(ahd, CMDSIZE_TABLE + 4, 15); |
| 6691 | ahd_outb(ahd, CMDSIZE_TABLE + 5, 11); |
| 6692 | ahd_outb(ahd, CMDSIZE_TABLE + 6, 0); |
| 6693 | ahd_outb(ahd, CMDSIZE_TABLE + 7, 0); |
| 6694 | |
| 6695 | /* Tell the sequencer of our initial queue positions */ |
| 6696 | ahd_set_modes(ahd, AHD_MODE_CCHAN, AHD_MODE_CCHAN); |
| 6697 | ahd_outb(ahd, QOFF_CTLSTA, SCB_QSIZE_512); |
| 6698 | ahd->qinfifonext = 0; |
| 6699 | ahd_set_hnscb_qoff(ahd, ahd->qinfifonext); |
| 6700 | ahd_set_hescb_qoff(ahd, 0); |
| 6701 | ahd_set_snscb_qoff(ahd, 0); |
| 6702 | ahd_set_sescb_qoff(ahd, 0); |
| 6703 | ahd_set_sdscb_qoff(ahd, 0); |
| 6704 | |
| 6705 | /* |
| 6706 | * Tell the sequencer which SCB will be the next one it receives. |
| 6707 | */ |
| 6708 | busaddr = ahd_le32toh(ahd->next_queued_hscb->hscb_busaddr); |
Hannes Reinecke | ba62cd2 | 2006-01-12 12:07:02 +0100 | [diff] [blame] | 6709 | ahd_outl(ahd, NEXT_QUEUED_SCB_ADDR, busaddr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6710 | |
| 6711 | /* |
| 6712 | * Default to coalescing disabled. |
| 6713 | */ |
| 6714 | ahd_outw(ahd, INT_COALESCING_CMDCOUNT, 0); |
| 6715 | ahd_outw(ahd, CMDS_PENDING, 0); |
| 6716 | ahd_update_coalescing_values(ahd, ahd->int_coalescing_timer, |
| 6717 | ahd->int_coalescing_maxcmds, |
| 6718 | ahd->int_coalescing_mincmds); |
| 6719 | ahd_enable_coalescing(ahd, FALSE); |
| 6720 | |
| 6721 | ahd_loadseq(ahd); |
| 6722 | ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); |
Hannes Reinecke | 3fb0861 | 2006-01-24 10:44:38 +0100 | [diff] [blame] | 6723 | |
| 6724 | if (ahd->features & AHD_AIC79XXB_SLOWCRC) { |
| 6725 | u_int negodat3 = ahd_inb(ahd, NEGCONOPTS); |
| 6726 | |
| 6727 | negodat3 |= ENSLOWCRC; |
| 6728 | ahd_outb(ahd, NEGCONOPTS, negodat3); |
| 6729 | negodat3 = ahd_inb(ahd, NEGCONOPTS); |
| 6730 | if (!(negodat3 & ENSLOWCRC)) |
| 6731 | printf("aic79xx: failed to set the SLOWCRC bit\n"); |
| 6732 | else |
| 6733 | printf("aic79xx: SLOWCRC bit set\n"); |
| 6734 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6735 | } |
| 6736 | |
| 6737 | /* |
| 6738 | * Setup default device and controller settings. |
| 6739 | * This should only be called if our probe has |
| 6740 | * determined that no configuration data is available. |
| 6741 | */ |
| 6742 | int |
| 6743 | ahd_default_config(struct ahd_softc *ahd) |
| 6744 | { |
| 6745 | int targ; |
| 6746 | |
| 6747 | ahd->our_id = 7; |
| 6748 | |
| 6749 | /* |
| 6750 | * Allocate a tstate to house information for our |
| 6751 | * initiator presence on the bus as well as the user |
| 6752 | * data for any target mode initiator. |
| 6753 | */ |
| 6754 | if (ahd_alloc_tstate(ahd, ahd->our_id, 'A') == NULL) { |
| 6755 | printf("%s: unable to allocate ahd_tmode_tstate. " |
| 6756 | "Failing attach\n", ahd_name(ahd)); |
| 6757 | return (ENOMEM); |
| 6758 | } |
| 6759 | |
| 6760 | for (targ = 0; targ < AHD_NUM_TARGETS; targ++) { |
| 6761 | struct ahd_devinfo devinfo; |
| 6762 | struct ahd_initiator_tinfo *tinfo; |
| 6763 | struct ahd_tmode_tstate *tstate; |
| 6764 | uint16_t target_mask; |
| 6765 | |
| 6766 | tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, |
| 6767 | targ, &tstate); |
| 6768 | /* |
| 6769 | * We support SPC2 and SPI4. |
| 6770 | */ |
| 6771 | tinfo->user.protocol_version = 4; |
| 6772 | tinfo->user.transport_version = 4; |
| 6773 | |
| 6774 | target_mask = 0x01 << targ; |
| 6775 | ahd->user_discenable |= target_mask; |
| 6776 | tstate->discenable |= target_mask; |
| 6777 | ahd->user_tagenable |= target_mask; |
| 6778 | #ifdef AHD_FORCE_160 |
| 6779 | tinfo->user.period = AHD_SYNCRATE_DT; |
| 6780 | #else |
| 6781 | tinfo->user.period = AHD_SYNCRATE_160; |
| 6782 | #endif |
| 6783 | tinfo->user.offset = MAX_OFFSET; |
| 6784 | tinfo->user.ppr_options = MSG_EXT_PPR_RD_STRM |
| 6785 | | MSG_EXT_PPR_WR_FLOW |
| 6786 | | MSG_EXT_PPR_HOLD_MCS |
| 6787 | | MSG_EXT_PPR_IU_REQ |
| 6788 | | MSG_EXT_PPR_QAS_REQ |
| 6789 | | MSG_EXT_PPR_DT_REQ; |
| 6790 | if ((ahd->features & AHD_RTI) != 0) |
| 6791 | tinfo->user.ppr_options |= MSG_EXT_PPR_RTI; |
| 6792 | |
| 6793 | tinfo->user.width = MSG_EXT_WDTR_BUS_16_BIT; |
| 6794 | |
| 6795 | /* |
| 6796 | * Start out Async/Narrow/Untagged and with |
| 6797 | * conservative protocol support. |
| 6798 | */ |
| 6799 | tinfo->goal.protocol_version = 2; |
| 6800 | tinfo->goal.transport_version = 2; |
| 6801 | tinfo->curr.protocol_version = 2; |
| 6802 | tinfo->curr.transport_version = 2; |
| 6803 | ahd_compile_devinfo(&devinfo, ahd->our_id, |
| 6804 | targ, CAM_LUN_WILDCARD, |
| 6805 | 'A', ROLE_INITIATOR); |
| 6806 | tstate->tagenable &= ~target_mask; |
| 6807 | ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT, |
| 6808 | AHD_TRANS_CUR|AHD_TRANS_GOAL, /*paused*/TRUE); |
| 6809 | ahd_set_syncrate(ahd, &devinfo, /*period*/0, /*offset*/0, |
| 6810 | /*ppr_options*/0, AHD_TRANS_CUR|AHD_TRANS_GOAL, |
| 6811 | /*paused*/TRUE); |
| 6812 | } |
| 6813 | return (0); |
| 6814 | } |
| 6815 | |
| 6816 | /* |
| 6817 | * Parse device configuration information. |
| 6818 | */ |
| 6819 | int |
| 6820 | ahd_parse_cfgdata(struct ahd_softc *ahd, struct seeprom_config *sc) |
| 6821 | { |
| 6822 | int targ; |
| 6823 | int max_targ; |
| 6824 | |
| 6825 | max_targ = sc->max_targets & CFMAXTARG; |
| 6826 | ahd->our_id = sc->brtime_id & CFSCSIID; |
| 6827 | |
| 6828 | /* |
| 6829 | * Allocate a tstate to house information for our |
| 6830 | * initiator presence on the bus as well as the user |
| 6831 | * data for any target mode initiator. |
| 6832 | */ |
| 6833 | if (ahd_alloc_tstate(ahd, ahd->our_id, 'A') == NULL) { |
| 6834 | printf("%s: unable to allocate ahd_tmode_tstate. " |
| 6835 | "Failing attach\n", ahd_name(ahd)); |
| 6836 | return (ENOMEM); |
| 6837 | } |
| 6838 | |
| 6839 | for (targ = 0; targ < max_targ; targ++) { |
| 6840 | struct ahd_devinfo devinfo; |
| 6841 | struct ahd_initiator_tinfo *tinfo; |
| 6842 | struct ahd_transinfo *user_tinfo; |
| 6843 | struct ahd_tmode_tstate *tstate; |
| 6844 | uint16_t target_mask; |
| 6845 | |
| 6846 | tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, |
| 6847 | targ, &tstate); |
| 6848 | user_tinfo = &tinfo->user; |
| 6849 | |
| 6850 | /* |
| 6851 | * We support SPC2 and SPI4. |
| 6852 | */ |
| 6853 | tinfo->user.protocol_version = 4; |
| 6854 | tinfo->user.transport_version = 4; |
| 6855 | |
| 6856 | target_mask = 0x01 << targ; |
| 6857 | ahd->user_discenable &= ~target_mask; |
| 6858 | tstate->discenable &= ~target_mask; |
| 6859 | ahd->user_tagenable &= ~target_mask; |
| 6860 | if (sc->device_flags[targ] & CFDISC) { |
| 6861 | tstate->discenable |= target_mask; |
| 6862 | ahd->user_discenable |= target_mask; |
| 6863 | ahd->user_tagenable |= target_mask; |
| 6864 | } else { |
| 6865 | /* |
| 6866 | * Cannot be packetized without disconnection. |
| 6867 | */ |
| 6868 | sc->device_flags[targ] &= ~CFPACKETIZED; |
| 6869 | } |
| 6870 | |
| 6871 | user_tinfo->ppr_options = 0; |
| 6872 | user_tinfo->period = (sc->device_flags[targ] & CFXFER); |
| 6873 | if (user_tinfo->period < CFXFER_ASYNC) { |
| 6874 | if (user_tinfo->period <= AHD_PERIOD_10MHz) |
| 6875 | user_tinfo->ppr_options |= MSG_EXT_PPR_DT_REQ; |
| 6876 | user_tinfo->offset = MAX_OFFSET; |
| 6877 | } else { |
| 6878 | user_tinfo->offset = 0; |
| 6879 | user_tinfo->period = AHD_ASYNC_XFER_PERIOD; |
| 6880 | } |
| 6881 | #ifdef AHD_FORCE_160 |
| 6882 | if (user_tinfo->period <= AHD_SYNCRATE_160) |
| 6883 | user_tinfo->period = AHD_SYNCRATE_DT; |
| 6884 | #endif |
| 6885 | |
| 6886 | if ((sc->device_flags[targ] & CFPACKETIZED) != 0) { |
| 6887 | user_tinfo->ppr_options |= MSG_EXT_PPR_RD_STRM |
| 6888 | | MSG_EXT_PPR_WR_FLOW |
| 6889 | | MSG_EXT_PPR_HOLD_MCS |
| 6890 | | MSG_EXT_PPR_IU_REQ; |
| 6891 | if ((ahd->features & AHD_RTI) != 0) |
| 6892 | user_tinfo->ppr_options |= MSG_EXT_PPR_RTI; |
| 6893 | } |
| 6894 | |
| 6895 | if ((sc->device_flags[targ] & CFQAS) != 0) |
| 6896 | user_tinfo->ppr_options |= MSG_EXT_PPR_QAS_REQ; |
| 6897 | |
| 6898 | if ((sc->device_flags[targ] & CFWIDEB) != 0) |
| 6899 | user_tinfo->width = MSG_EXT_WDTR_BUS_16_BIT; |
| 6900 | else |
| 6901 | user_tinfo->width = MSG_EXT_WDTR_BUS_8_BIT; |
| 6902 | #ifdef AHD_DEBUG |
| 6903 | if ((ahd_debug & AHD_SHOW_MISC) != 0) |
| 6904 | printf("(%d): %x:%x:%x:%x\n", targ, user_tinfo->width, |
| 6905 | user_tinfo->period, user_tinfo->offset, |
| 6906 | user_tinfo->ppr_options); |
| 6907 | #endif |
| 6908 | /* |
| 6909 | * Start out Async/Narrow/Untagged and with |
| 6910 | * conservative protocol support. |
| 6911 | */ |
| 6912 | tstate->tagenable &= ~target_mask; |
| 6913 | tinfo->goal.protocol_version = 2; |
| 6914 | tinfo->goal.transport_version = 2; |
| 6915 | tinfo->curr.protocol_version = 2; |
| 6916 | tinfo->curr.transport_version = 2; |
| 6917 | ahd_compile_devinfo(&devinfo, ahd->our_id, |
| 6918 | targ, CAM_LUN_WILDCARD, |
| 6919 | 'A', ROLE_INITIATOR); |
| 6920 | ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT, |
| 6921 | AHD_TRANS_CUR|AHD_TRANS_GOAL, /*paused*/TRUE); |
| 6922 | ahd_set_syncrate(ahd, &devinfo, /*period*/0, /*offset*/0, |
| 6923 | /*ppr_options*/0, AHD_TRANS_CUR|AHD_TRANS_GOAL, |
| 6924 | /*paused*/TRUE); |
| 6925 | } |
| 6926 | |
| 6927 | ahd->flags &= ~AHD_SPCHK_ENB_A; |
| 6928 | if (sc->bios_control & CFSPARITY) |
| 6929 | ahd->flags |= AHD_SPCHK_ENB_A; |
| 6930 | |
| 6931 | ahd->flags &= ~AHD_RESET_BUS_A; |
| 6932 | if (sc->bios_control & CFRESETB) |
| 6933 | ahd->flags |= AHD_RESET_BUS_A; |
| 6934 | |
| 6935 | ahd->flags &= ~AHD_EXTENDED_TRANS_A; |
| 6936 | if (sc->bios_control & CFEXTEND) |
| 6937 | ahd->flags |= AHD_EXTENDED_TRANS_A; |
| 6938 | |
| 6939 | ahd->flags &= ~AHD_BIOS_ENABLED; |
| 6940 | if ((sc->bios_control & CFBIOSSTATE) == CFBS_ENABLED) |
| 6941 | ahd->flags |= AHD_BIOS_ENABLED; |
| 6942 | |
| 6943 | ahd->flags &= ~AHD_STPWLEVEL_A; |
| 6944 | if ((sc->adapter_control & CFSTPWLEVEL) != 0) |
| 6945 | ahd->flags |= AHD_STPWLEVEL_A; |
| 6946 | |
| 6947 | return (0); |
| 6948 | } |
| 6949 | |
| 6950 | /* |
| 6951 | * Parse device configuration information. |
| 6952 | */ |
| 6953 | int |
| 6954 | ahd_parse_vpddata(struct ahd_softc *ahd, struct vpd_config *vpd) |
| 6955 | { |
| 6956 | int error; |
| 6957 | |
| 6958 | error = ahd_verify_vpd_cksum(vpd); |
| 6959 | if (error == 0) |
| 6960 | return (EINVAL); |
| 6961 | if ((vpd->bios_flags & VPDBOOTHOST) != 0) |
| 6962 | ahd->flags |= AHD_BOOT_CHANNEL; |
| 6963 | return (0); |
| 6964 | } |
| 6965 | |
| 6966 | void |
| 6967 | ahd_intr_enable(struct ahd_softc *ahd, int enable) |
| 6968 | { |
| 6969 | u_int hcntrl; |
| 6970 | |
| 6971 | hcntrl = ahd_inb(ahd, HCNTRL); |
| 6972 | hcntrl &= ~INTEN; |
| 6973 | ahd->pause &= ~INTEN; |
| 6974 | ahd->unpause &= ~INTEN; |
| 6975 | if (enable) { |
| 6976 | hcntrl |= INTEN; |
| 6977 | ahd->pause |= INTEN; |
| 6978 | ahd->unpause |= INTEN; |
| 6979 | } |
| 6980 | ahd_outb(ahd, HCNTRL, hcntrl); |
| 6981 | } |
| 6982 | |
| 6983 | void |
| 6984 | ahd_update_coalescing_values(struct ahd_softc *ahd, u_int timer, u_int maxcmds, |
| 6985 | u_int mincmds) |
| 6986 | { |
| 6987 | if (timer > AHD_TIMER_MAX_US) |
| 6988 | timer = AHD_TIMER_MAX_US; |
| 6989 | ahd->int_coalescing_timer = timer; |
| 6990 | |
| 6991 | if (maxcmds > AHD_INT_COALESCING_MAXCMDS_MAX) |
| 6992 | maxcmds = AHD_INT_COALESCING_MAXCMDS_MAX; |
| 6993 | if (mincmds > AHD_INT_COALESCING_MINCMDS_MAX) |
| 6994 | mincmds = AHD_INT_COALESCING_MINCMDS_MAX; |
| 6995 | ahd->int_coalescing_maxcmds = maxcmds; |
| 6996 | ahd_outw(ahd, INT_COALESCING_TIMER, timer / AHD_TIMER_US_PER_TICK); |
| 6997 | ahd_outb(ahd, INT_COALESCING_MAXCMDS, -maxcmds); |
| 6998 | ahd_outb(ahd, INT_COALESCING_MINCMDS, -mincmds); |
| 6999 | } |
| 7000 | |
| 7001 | void |
| 7002 | ahd_enable_coalescing(struct ahd_softc *ahd, int enable) |
| 7003 | { |
| 7004 | |
| 7005 | ahd->hs_mailbox &= ~ENINT_COALESCE; |
| 7006 | if (enable) |
| 7007 | ahd->hs_mailbox |= ENINT_COALESCE; |
| 7008 | ahd_outb(ahd, HS_MAILBOX, ahd->hs_mailbox); |
| 7009 | ahd_flush_device_writes(ahd); |
| 7010 | ahd_run_qoutfifo(ahd); |
| 7011 | } |
| 7012 | |
| 7013 | /* |
| 7014 | * Ensure that the card is paused in a location |
| 7015 | * outside of all critical sections and that all |
| 7016 | * pending work is completed prior to returning. |
| 7017 | * This routine should only be called from outside |
| 7018 | * an interrupt context. |
| 7019 | */ |
| 7020 | void |
| 7021 | ahd_pause_and_flushwork(struct ahd_softc *ahd) |
| 7022 | { |
| 7023 | u_int intstat; |
| 7024 | u_int maxloops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7025 | |
| 7026 | maxloops = 1000; |
| 7027 | ahd->flags |= AHD_ALL_INTERRUPTS; |
| 7028 | ahd_pause(ahd); |
| 7029 | /* |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 7030 | * Freeze the outgoing selections. We do this only |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7031 | * until we are safely paused without further selections |
| 7032 | * pending. |
| 7033 | */ |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 7034 | ahd->qfreeze_cnt--; |
| 7035 | ahd_outw(ahd, KERNEL_QFREEZE_COUNT, ahd->qfreeze_cnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7036 | ahd_outb(ahd, SEQ_FLAGS2, ahd_inb(ahd, SEQ_FLAGS2) | SELECTOUT_QFROZEN); |
| 7037 | do { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7038 | |
| 7039 | ahd_unpause(ahd); |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 7040 | /* |
| 7041 | * Give the sequencer some time to service |
| 7042 | * any active selections. |
| 7043 | */ |
| 7044 | ahd_delay(500); |
| 7045 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7046 | ahd_intr(ahd); |
| 7047 | ahd_pause(ahd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7048 | intstat = ahd_inb(ahd, INTSTAT); |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 7049 | if ((intstat & INT_PEND) == 0) { |
| 7050 | ahd_clear_critical_section(ahd); |
| 7051 | intstat = ahd_inb(ahd, INTSTAT); |
| 7052 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7053 | } while (--maxloops |
| 7054 | && (intstat != 0xFF || (ahd->features & AHD_REMOVABLE) == 0) |
| 7055 | && ((intstat & INT_PEND) != 0 |
| 7056 | || (ahd_inb(ahd, SCSISEQ0) & ENSELO) != 0 |
| 7057 | || (ahd_inb(ahd, SSTAT0) & (SELDO|SELINGO)) != 0)); |
| 7058 | |
| 7059 | if (maxloops == 0) { |
| 7060 | printf("Infinite interrupt loop, INTSTAT = %x", |
| 7061 | ahd_inb(ahd, INTSTAT)); |
| 7062 | } |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 7063 | ahd->qfreeze_cnt++; |
| 7064 | ahd_outw(ahd, KERNEL_QFREEZE_COUNT, ahd->qfreeze_cnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7065 | |
| 7066 | ahd_flush_qoutfifo(ahd); |
| 7067 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7068 | ahd->flags &= ~AHD_ALL_INTERRUPTS; |
| 7069 | } |
| 7070 | |
| 7071 | int |
| 7072 | ahd_suspend(struct ahd_softc *ahd) |
| 7073 | { |
| 7074 | |
| 7075 | ahd_pause_and_flushwork(ahd); |
| 7076 | |
| 7077 | if (LIST_FIRST(&ahd->pending_scbs) != NULL) { |
| 7078 | ahd_unpause(ahd); |
| 7079 | return (EBUSY); |
| 7080 | } |
| 7081 | ahd_shutdown(ahd); |
| 7082 | return (0); |
| 7083 | } |
| 7084 | |
| 7085 | int |
| 7086 | ahd_resume(struct ahd_softc *ahd) |
| 7087 | { |
| 7088 | |
| 7089 | ahd_reset(ahd, /*reinit*/TRUE); |
| 7090 | ahd_intr_enable(ahd, TRUE); |
| 7091 | ahd_restart(ahd); |
| 7092 | return (0); |
| 7093 | } |
| 7094 | |
| 7095 | /************************** Busy Target Table *********************************/ |
| 7096 | /* |
| 7097 | * Set SCBPTR to the SCB that contains the busy |
| 7098 | * table entry for TCL. Return the offset into |
| 7099 | * the SCB that contains the entry for TCL. |
| 7100 | * saved_scbid is dereferenced and set to the |
| 7101 | * scbid that should be restored once manipualtion |
| 7102 | * of the TCL entry is complete. |
| 7103 | */ |
| 7104 | static __inline u_int |
| 7105 | ahd_index_busy_tcl(struct ahd_softc *ahd, u_int *saved_scbid, u_int tcl) |
| 7106 | { |
| 7107 | /* |
| 7108 | * Index to the SCB that contains the busy entry. |
| 7109 | */ |
| 7110 | AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); |
| 7111 | *saved_scbid = ahd_get_scbptr(ahd); |
| 7112 | ahd_set_scbptr(ahd, TCL_LUN(tcl) |
| 7113 | | ((TCL_TARGET_OFFSET(tcl) & 0xC) << 4)); |
| 7114 | |
| 7115 | /* |
| 7116 | * And now calculate the SCB offset to the entry. |
| 7117 | * Each entry is 2 bytes wide, hence the |
| 7118 | * multiplication by 2. |
| 7119 | */ |
| 7120 | return (((TCL_TARGET_OFFSET(tcl) & 0x3) << 1) + SCB_DISCONNECTED_LISTS); |
| 7121 | } |
| 7122 | |
| 7123 | /* |
| 7124 | * Return the untagged transaction id for a given target/channel lun. |
| 7125 | */ |
| 7126 | u_int |
| 7127 | ahd_find_busy_tcl(struct ahd_softc *ahd, u_int tcl) |
| 7128 | { |
| 7129 | u_int scbid; |
| 7130 | u_int scb_offset; |
| 7131 | u_int saved_scbptr; |
| 7132 | |
| 7133 | scb_offset = ahd_index_busy_tcl(ahd, &saved_scbptr, tcl); |
| 7134 | scbid = ahd_inw_scbram(ahd, scb_offset); |
| 7135 | ahd_set_scbptr(ahd, saved_scbptr); |
| 7136 | return (scbid); |
| 7137 | } |
| 7138 | |
| 7139 | void |
| 7140 | ahd_busy_tcl(struct ahd_softc *ahd, u_int tcl, u_int scbid) |
| 7141 | { |
| 7142 | u_int scb_offset; |
| 7143 | u_int saved_scbptr; |
| 7144 | |
| 7145 | scb_offset = ahd_index_busy_tcl(ahd, &saved_scbptr, tcl); |
| 7146 | ahd_outw(ahd, scb_offset, scbid); |
| 7147 | ahd_set_scbptr(ahd, saved_scbptr); |
| 7148 | } |
| 7149 | |
| 7150 | /************************** SCB and SCB queue management **********************/ |
| 7151 | int |
| 7152 | ahd_match_scb(struct ahd_softc *ahd, struct scb *scb, int target, |
| 7153 | char channel, int lun, u_int tag, role_t role) |
| 7154 | { |
| 7155 | int targ = SCB_GET_TARGET(ahd, scb); |
| 7156 | char chan = SCB_GET_CHANNEL(ahd, scb); |
| 7157 | int slun = SCB_GET_LUN(scb); |
| 7158 | int match; |
| 7159 | |
| 7160 | match = ((chan == channel) || (channel == ALL_CHANNELS)); |
| 7161 | if (match != 0) |
| 7162 | match = ((targ == target) || (target == CAM_TARGET_WILDCARD)); |
| 7163 | if (match != 0) |
| 7164 | match = ((lun == slun) || (lun == CAM_LUN_WILDCARD)); |
| 7165 | if (match != 0) { |
| 7166 | #ifdef AHD_TARGET_MODE |
| 7167 | int group; |
| 7168 | |
| 7169 | group = XPT_FC_GROUP(scb->io_ctx->ccb_h.func_code); |
| 7170 | if (role == ROLE_INITIATOR) { |
| 7171 | match = (group != XPT_FC_GROUP_TMODE) |
| 7172 | && ((tag == SCB_GET_TAG(scb)) |
| 7173 | || (tag == SCB_LIST_NULL)); |
| 7174 | } else if (role == ROLE_TARGET) { |
| 7175 | match = (group == XPT_FC_GROUP_TMODE) |
| 7176 | && ((tag == scb->io_ctx->csio.tag_id) |
| 7177 | || (tag == SCB_LIST_NULL)); |
| 7178 | } |
| 7179 | #else /* !AHD_TARGET_MODE */ |
| 7180 | match = ((tag == SCB_GET_TAG(scb)) || (tag == SCB_LIST_NULL)); |
| 7181 | #endif /* AHD_TARGET_MODE */ |
| 7182 | } |
| 7183 | |
| 7184 | return match; |
| 7185 | } |
| 7186 | |
| 7187 | void |
| 7188 | ahd_freeze_devq(struct ahd_softc *ahd, struct scb *scb) |
| 7189 | { |
| 7190 | int target; |
| 7191 | char channel; |
| 7192 | int lun; |
| 7193 | |
| 7194 | target = SCB_GET_TARGET(ahd, scb); |
| 7195 | lun = SCB_GET_LUN(scb); |
| 7196 | channel = SCB_GET_CHANNEL(ahd, scb); |
| 7197 | |
| 7198 | ahd_search_qinfifo(ahd, target, channel, lun, |
| 7199 | /*tag*/SCB_LIST_NULL, ROLE_UNKNOWN, |
| 7200 | CAM_REQUEUE_REQ, SEARCH_COMPLETE); |
| 7201 | |
| 7202 | ahd_platform_freeze_devq(ahd, scb); |
| 7203 | } |
| 7204 | |
| 7205 | void |
| 7206 | ahd_qinfifo_requeue_tail(struct ahd_softc *ahd, struct scb *scb) |
| 7207 | { |
| 7208 | struct scb *prev_scb; |
| 7209 | ahd_mode_state saved_modes; |
| 7210 | |
| 7211 | saved_modes = ahd_save_modes(ahd); |
| 7212 | ahd_set_modes(ahd, AHD_MODE_CCHAN, AHD_MODE_CCHAN); |
| 7213 | prev_scb = NULL; |
| 7214 | if (ahd_qinfifo_count(ahd) != 0) { |
| 7215 | u_int prev_tag; |
| 7216 | u_int prev_pos; |
| 7217 | |
| 7218 | prev_pos = AHD_QIN_WRAP(ahd->qinfifonext - 1); |
| 7219 | prev_tag = ahd->qinfifo[prev_pos]; |
| 7220 | prev_scb = ahd_lookup_scb(ahd, prev_tag); |
| 7221 | } |
| 7222 | ahd_qinfifo_requeue(ahd, prev_scb, scb); |
| 7223 | ahd_set_hnscb_qoff(ahd, ahd->qinfifonext); |
| 7224 | ahd_restore_modes(ahd, saved_modes); |
| 7225 | } |
| 7226 | |
| 7227 | static void |
| 7228 | ahd_qinfifo_requeue(struct ahd_softc *ahd, struct scb *prev_scb, |
| 7229 | struct scb *scb) |
| 7230 | { |
| 7231 | if (prev_scb == NULL) { |
| 7232 | uint32_t busaddr; |
| 7233 | |
| 7234 | busaddr = ahd_le32toh(scb->hscb->hscb_busaddr); |
Hannes Reinecke | ba62cd2 | 2006-01-12 12:07:02 +0100 | [diff] [blame] | 7235 | ahd_outl(ahd, NEXT_QUEUED_SCB_ADDR, busaddr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7236 | } else { |
| 7237 | prev_scb->hscb->next_hscb_busaddr = scb->hscb->hscb_busaddr; |
| 7238 | ahd_sync_scb(ahd, prev_scb, |
| 7239 | BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); |
| 7240 | } |
| 7241 | ahd->qinfifo[AHD_QIN_WRAP(ahd->qinfifonext)] = SCB_GET_TAG(scb); |
| 7242 | ahd->qinfifonext++; |
| 7243 | scb->hscb->next_hscb_busaddr = ahd->next_queued_hscb->hscb_busaddr; |
| 7244 | ahd_sync_scb(ahd, scb, BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); |
| 7245 | } |
| 7246 | |
| 7247 | static int |
| 7248 | ahd_qinfifo_count(struct ahd_softc *ahd) |
| 7249 | { |
| 7250 | u_int qinpos; |
| 7251 | u_int wrap_qinpos; |
| 7252 | u_int wrap_qinfifonext; |
| 7253 | |
| 7254 | AHD_ASSERT_MODES(ahd, AHD_MODE_CCHAN_MSK, AHD_MODE_CCHAN_MSK); |
| 7255 | qinpos = ahd_get_snscb_qoff(ahd); |
| 7256 | wrap_qinpos = AHD_QIN_WRAP(qinpos); |
| 7257 | wrap_qinfifonext = AHD_QIN_WRAP(ahd->qinfifonext); |
| 7258 | if (wrap_qinfifonext >= wrap_qinpos) |
| 7259 | return (wrap_qinfifonext - wrap_qinpos); |
| 7260 | else |
| 7261 | return (wrap_qinfifonext |
| 7262 | + NUM_ELEMENTS(ahd->qinfifo) - wrap_qinpos); |
| 7263 | } |
| 7264 | |
| 7265 | void |
| 7266 | ahd_reset_cmds_pending(struct ahd_softc *ahd) |
| 7267 | { |
| 7268 | struct scb *scb; |
| 7269 | ahd_mode_state saved_modes; |
| 7270 | u_int pending_cmds; |
| 7271 | |
| 7272 | saved_modes = ahd_save_modes(ahd); |
| 7273 | ahd_set_modes(ahd, AHD_MODE_CCHAN, AHD_MODE_CCHAN); |
| 7274 | |
| 7275 | /* |
| 7276 | * Don't count any commands as outstanding that the |
| 7277 | * sequencer has already marked for completion. |
| 7278 | */ |
| 7279 | ahd_flush_qoutfifo(ahd); |
| 7280 | |
| 7281 | pending_cmds = 0; |
| 7282 | LIST_FOREACH(scb, &ahd->pending_scbs, pending_links) { |
| 7283 | pending_cmds++; |
| 7284 | } |
| 7285 | ahd_outw(ahd, CMDS_PENDING, pending_cmds - ahd_qinfifo_count(ahd)); |
| 7286 | ahd_restore_modes(ahd, saved_modes); |
| 7287 | ahd->flags &= ~AHD_UPDATE_PEND_CMDS; |
| 7288 | } |
| 7289 | |
Hannes Reinecke | 53467e6 | 2006-01-24 10:43:26 +0100 | [diff] [blame] | 7290 | void |
| 7291 | ahd_done_with_status(struct ahd_softc *ahd, struct scb *scb, uint32_t status) |
| 7292 | { |
| 7293 | cam_status ostat; |
| 7294 | cam_status cstat; |
| 7295 | |
| 7296 | ostat = ahd_get_transaction_status(scb); |
| 7297 | if (ostat == CAM_REQ_INPROG) |
| 7298 | ahd_set_transaction_status(scb, status); |
| 7299 | cstat = ahd_get_transaction_status(scb); |
| 7300 | if (cstat != CAM_REQ_CMP) |
| 7301 | ahd_freeze_scb(scb); |
| 7302 | ahd_done(ahd, scb); |
| 7303 | } |
| 7304 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7305 | int |
| 7306 | ahd_search_qinfifo(struct ahd_softc *ahd, int target, char channel, |
| 7307 | int lun, u_int tag, role_t role, uint32_t status, |
| 7308 | ahd_search_action action) |
| 7309 | { |
| 7310 | struct scb *scb; |
Hannes Reinecke | 53467e6 | 2006-01-24 10:43:26 +0100 | [diff] [blame] | 7311 | struct scb *mk_msg_scb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7312 | struct scb *prev_scb; |
| 7313 | ahd_mode_state saved_modes; |
| 7314 | u_int qinstart; |
| 7315 | u_int qinpos; |
| 7316 | u_int qintail; |
| 7317 | u_int tid_next; |
| 7318 | u_int tid_prev; |
| 7319 | u_int scbid; |
Hannes Reinecke | 53467e6 | 2006-01-24 10:43:26 +0100 | [diff] [blame] | 7320 | u_int seq_flags2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7321 | u_int savedscbptr; |
| 7322 | uint32_t busaddr; |
| 7323 | int found; |
| 7324 | int targets; |
| 7325 | |
| 7326 | /* Must be in CCHAN mode */ |
| 7327 | saved_modes = ahd_save_modes(ahd); |
| 7328 | ahd_set_modes(ahd, AHD_MODE_CCHAN, AHD_MODE_CCHAN); |
| 7329 | |
| 7330 | /* |
| 7331 | * Halt any pending SCB DMA. The sequencer will reinitiate |
| 7332 | * this dma if the qinfifo is not empty once we unpause. |
| 7333 | */ |
| 7334 | if ((ahd_inb(ahd, CCSCBCTL) & (CCARREN|CCSCBEN|CCSCBDIR)) |
| 7335 | == (CCARREN|CCSCBEN|CCSCBDIR)) { |
| 7336 | ahd_outb(ahd, CCSCBCTL, |
| 7337 | ahd_inb(ahd, CCSCBCTL) & ~(CCARREN|CCSCBEN)); |
| 7338 | while ((ahd_inb(ahd, CCSCBCTL) & (CCARREN|CCSCBEN)) != 0) |
| 7339 | ; |
| 7340 | } |
| 7341 | /* Determine sequencer's position in the qinfifo. */ |
| 7342 | qintail = AHD_QIN_WRAP(ahd->qinfifonext); |
| 7343 | qinstart = ahd_get_snscb_qoff(ahd); |
| 7344 | qinpos = AHD_QIN_WRAP(qinstart); |
| 7345 | found = 0; |
| 7346 | prev_scb = NULL; |
| 7347 | |
| 7348 | if (action == SEARCH_PRINT) { |
| 7349 | printf("qinstart = %d qinfifonext = %d\nQINFIFO:", |
| 7350 | qinstart, ahd->qinfifonext); |
| 7351 | } |
| 7352 | |
| 7353 | /* |
| 7354 | * Start with an empty queue. Entries that are not chosen |
| 7355 | * for removal will be re-added to the queue as we go. |
| 7356 | */ |
| 7357 | ahd->qinfifonext = qinstart; |
| 7358 | busaddr = ahd_le32toh(ahd->next_queued_hscb->hscb_busaddr); |
Hannes Reinecke | ba62cd2 | 2006-01-12 12:07:02 +0100 | [diff] [blame] | 7359 | ahd_outl(ahd, NEXT_QUEUED_SCB_ADDR, busaddr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7360 | |
| 7361 | while (qinpos != qintail) { |
| 7362 | scb = ahd_lookup_scb(ahd, ahd->qinfifo[qinpos]); |
| 7363 | if (scb == NULL) { |
| 7364 | printf("qinpos = %d, SCB index = %d\n", |
| 7365 | qinpos, ahd->qinfifo[qinpos]); |
| 7366 | panic("Loop 1\n"); |
| 7367 | } |
| 7368 | |
| 7369 | if (ahd_match_scb(ahd, scb, target, channel, lun, tag, role)) { |
| 7370 | /* |
| 7371 | * We found an scb that needs to be acted on. |
| 7372 | */ |
| 7373 | found++; |
| 7374 | switch (action) { |
| 7375 | case SEARCH_COMPLETE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7376 | if ((scb->flags & SCB_ACTIVE) == 0) |
| 7377 | printf("Inactive SCB in qinfifo\n"); |
Hannes Reinecke | 53467e6 | 2006-01-24 10:43:26 +0100 | [diff] [blame] | 7378 | ahd_done_with_status(ahd, scb, status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7379 | /* FALLTHROUGH */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7380 | case SEARCH_REMOVE: |
| 7381 | break; |
| 7382 | case SEARCH_PRINT: |
| 7383 | printf(" 0x%x", ahd->qinfifo[qinpos]); |
| 7384 | /* FALLTHROUGH */ |
| 7385 | case SEARCH_COUNT: |
| 7386 | ahd_qinfifo_requeue(ahd, prev_scb, scb); |
| 7387 | prev_scb = scb; |
| 7388 | break; |
| 7389 | } |
| 7390 | } else { |
| 7391 | ahd_qinfifo_requeue(ahd, prev_scb, scb); |
| 7392 | prev_scb = scb; |
| 7393 | } |
| 7394 | qinpos = AHD_QIN_WRAP(qinpos+1); |
| 7395 | } |
| 7396 | |
| 7397 | ahd_set_hnscb_qoff(ahd, ahd->qinfifonext); |
| 7398 | |
| 7399 | if (action == SEARCH_PRINT) |
| 7400 | printf("\nWAITING_TID_QUEUES:\n"); |
| 7401 | |
| 7402 | /* |
| 7403 | * Search waiting for selection lists. We traverse the |
| 7404 | * list of "their ids" waiting for selection and, if |
| 7405 | * appropriate, traverse the SCBs of each "their id" |
| 7406 | * looking for matches. |
| 7407 | */ |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 7408 | ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); |
Hannes Reinecke | 53467e6 | 2006-01-24 10:43:26 +0100 | [diff] [blame] | 7409 | seq_flags2 = ahd_inb(ahd, SEQ_FLAGS2); |
| 7410 | if ((seq_flags2 & PENDING_MK_MESSAGE) != 0) { |
| 7411 | scbid = ahd_inw(ahd, MK_MESSAGE_SCB); |
| 7412 | mk_msg_scb = ahd_lookup_scb(ahd, scbid); |
| 7413 | } else |
| 7414 | mk_msg_scb = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7415 | savedscbptr = ahd_get_scbptr(ahd); |
| 7416 | tid_next = ahd_inw(ahd, WAITING_TID_HEAD); |
| 7417 | tid_prev = SCB_LIST_NULL; |
| 7418 | targets = 0; |
| 7419 | for (scbid = tid_next; !SCBID_IS_NULL(scbid); scbid = tid_next) { |
| 7420 | u_int tid_head; |
Hannes Reinecke | 53467e6 | 2006-01-24 10:43:26 +0100 | [diff] [blame] | 7421 | u_int tid_tail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7422 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7423 | targets++; |
Hannes Reinecke | 53467e6 | 2006-01-24 10:43:26 +0100 | [diff] [blame] | 7424 | if (targets > AHD_NUM_TARGETS) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7425 | panic("TID LIST LOOP"); |
Hannes Reinecke | 53467e6 | 2006-01-24 10:43:26 +0100 | [diff] [blame] | 7426 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7427 | if (scbid >= ahd->scb_data.numscbs) { |
| 7428 | printf("%s: Waiting TID List inconsistency. " |
| 7429 | "SCB index == 0x%x, yet numscbs == 0x%x.", |
| 7430 | ahd_name(ahd), scbid, ahd->scb_data.numscbs); |
| 7431 | ahd_dump_card_state(ahd); |
| 7432 | panic("for safety"); |
| 7433 | } |
| 7434 | scb = ahd_lookup_scb(ahd, scbid); |
| 7435 | if (scb == NULL) { |
| 7436 | printf("%s: SCB = 0x%x Not Active!\n", |
| 7437 | ahd_name(ahd), scbid); |
| 7438 | panic("Waiting TID List traversal\n"); |
| 7439 | } |
| 7440 | ahd_set_scbptr(ahd, scbid); |
| 7441 | tid_next = ahd_inw_scbram(ahd, SCB_NEXT2); |
| 7442 | if (ahd_match_scb(ahd, scb, target, channel, CAM_LUN_WILDCARD, |
| 7443 | SCB_LIST_NULL, ROLE_UNKNOWN) == 0) { |
| 7444 | tid_prev = scbid; |
| 7445 | continue; |
| 7446 | } |
| 7447 | |
| 7448 | /* |
| 7449 | * We found a list of scbs that needs to be searched. |
| 7450 | */ |
| 7451 | if (action == SEARCH_PRINT) |
| 7452 | printf(" %d ( ", SCB_GET_TARGET(ahd, scb)); |
| 7453 | tid_head = scbid; |
| 7454 | found += ahd_search_scb_list(ahd, target, channel, |
| 7455 | lun, tag, role, status, |
Hannes Reinecke | 53467e6 | 2006-01-24 10:43:26 +0100 | [diff] [blame] | 7456 | action, &tid_head, &tid_tail, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7457 | SCB_GET_TARGET(ahd, scb)); |
Hannes Reinecke | 53467e6 | 2006-01-24 10:43:26 +0100 | [diff] [blame] | 7458 | /* |
| 7459 | * Check any MK_MESSAGE SCB that is still waiting to |
| 7460 | * enter this target's waiting for selection queue. |
| 7461 | */ |
| 7462 | if (mk_msg_scb != NULL |
| 7463 | && ahd_match_scb(ahd, mk_msg_scb, target, channel, |
| 7464 | lun, tag, role)) { |
| 7465 | |
| 7466 | /* |
| 7467 | * We found an scb that needs to be acted on. |
| 7468 | */ |
| 7469 | found++; |
| 7470 | switch (action) { |
| 7471 | case SEARCH_COMPLETE: |
| 7472 | if ((mk_msg_scb->flags & SCB_ACTIVE) == 0) |
| 7473 | printf("Inactive SCB pending MK_MSG\n"); |
| 7474 | ahd_done_with_status(ahd, mk_msg_scb, status); |
| 7475 | /* FALLTHROUGH */ |
| 7476 | case SEARCH_REMOVE: |
| 7477 | { |
| 7478 | u_int tail_offset; |
| 7479 | |
| 7480 | printf("Removing MK_MSG scb\n"); |
| 7481 | |
| 7482 | /* |
| 7483 | * Reset our tail to the tail of the |
| 7484 | * main per-target list. |
| 7485 | */ |
| 7486 | tail_offset = WAITING_SCB_TAILS |
| 7487 | + (2 * SCB_GET_TARGET(ahd, mk_msg_scb)); |
| 7488 | ahd_outw(ahd, tail_offset, tid_tail); |
| 7489 | |
| 7490 | seq_flags2 &= ~PENDING_MK_MESSAGE; |
| 7491 | ahd_outb(ahd, SEQ_FLAGS2, seq_flags2); |
| 7492 | ahd_outw(ahd, CMDS_PENDING, |
| 7493 | ahd_inw(ahd, CMDS_PENDING)-1); |
| 7494 | mk_msg_scb = NULL; |
| 7495 | break; |
| 7496 | } |
| 7497 | case SEARCH_PRINT: |
| 7498 | printf(" 0x%x", SCB_GET_TAG(scb)); |
| 7499 | /* FALLTHROUGH */ |
| 7500 | case SEARCH_COUNT: |
| 7501 | break; |
| 7502 | } |
| 7503 | } |
| 7504 | |
| 7505 | if (mk_msg_scb != NULL |
| 7506 | && SCBID_IS_NULL(tid_head) |
| 7507 | && ahd_match_scb(ahd, scb, target, channel, CAM_LUN_WILDCARD, |
| 7508 | SCB_LIST_NULL, ROLE_UNKNOWN)) { |
| 7509 | |
| 7510 | /* |
| 7511 | * When removing the last SCB for a target |
| 7512 | * queue with a pending MK_MESSAGE scb, we |
| 7513 | * must queue the MK_MESSAGE scb. |
| 7514 | */ |
| 7515 | printf("Queueing mk_msg_scb\n"); |
| 7516 | tid_head = ahd_inw(ahd, MK_MESSAGE_SCB); |
| 7517 | seq_flags2 &= ~PENDING_MK_MESSAGE; |
| 7518 | ahd_outb(ahd, SEQ_FLAGS2, seq_flags2); |
| 7519 | mk_msg_scb = NULL; |
| 7520 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7521 | if (tid_head != scbid) |
| 7522 | ahd_stitch_tid_list(ahd, tid_prev, tid_head, tid_next); |
| 7523 | if (!SCBID_IS_NULL(tid_head)) |
| 7524 | tid_prev = tid_head; |
| 7525 | if (action == SEARCH_PRINT) |
| 7526 | printf(")\n"); |
| 7527 | } |
Hannes Reinecke | 53467e6 | 2006-01-24 10:43:26 +0100 | [diff] [blame] | 7528 | |
| 7529 | /* Restore saved state. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7530 | ahd_set_scbptr(ahd, savedscbptr); |
| 7531 | ahd_restore_modes(ahd, saved_modes); |
| 7532 | return (found); |
| 7533 | } |
| 7534 | |
| 7535 | static int |
| 7536 | ahd_search_scb_list(struct ahd_softc *ahd, int target, char channel, |
| 7537 | int lun, u_int tag, role_t role, uint32_t status, |
Hannes Reinecke | 53467e6 | 2006-01-24 10:43:26 +0100 | [diff] [blame] | 7538 | ahd_search_action action, u_int *list_head, |
| 7539 | u_int *list_tail, u_int tid) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7540 | { |
| 7541 | struct scb *scb; |
| 7542 | u_int scbid; |
| 7543 | u_int next; |
| 7544 | u_int prev; |
| 7545 | int found; |
| 7546 | |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 7547 | AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7548 | found = 0; |
| 7549 | prev = SCB_LIST_NULL; |
| 7550 | next = *list_head; |
Hannes Reinecke | 53467e6 | 2006-01-24 10:43:26 +0100 | [diff] [blame] | 7551 | *list_tail = SCB_LIST_NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7552 | for (scbid = next; !SCBID_IS_NULL(scbid); scbid = next) { |
| 7553 | if (scbid >= ahd->scb_data.numscbs) { |
| 7554 | printf("%s:SCB List inconsistency. " |
| 7555 | "SCB == 0x%x, yet numscbs == 0x%x.", |
| 7556 | ahd_name(ahd), scbid, ahd->scb_data.numscbs); |
| 7557 | ahd_dump_card_state(ahd); |
| 7558 | panic("for safety"); |
| 7559 | } |
| 7560 | scb = ahd_lookup_scb(ahd, scbid); |
| 7561 | if (scb == NULL) { |
| 7562 | printf("%s: SCB = %d Not Active!\n", |
| 7563 | ahd_name(ahd), scbid); |
| 7564 | panic("Waiting List traversal\n"); |
| 7565 | } |
| 7566 | ahd_set_scbptr(ahd, scbid); |
Hannes Reinecke | 53467e6 | 2006-01-24 10:43:26 +0100 | [diff] [blame] | 7567 | *list_tail = scbid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7568 | next = ahd_inw_scbram(ahd, SCB_NEXT); |
| 7569 | if (ahd_match_scb(ahd, scb, target, channel, |
| 7570 | lun, SCB_LIST_NULL, role) == 0) { |
| 7571 | prev = scbid; |
| 7572 | continue; |
| 7573 | } |
| 7574 | found++; |
| 7575 | switch (action) { |
| 7576 | case SEARCH_COMPLETE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7577 | if ((scb->flags & SCB_ACTIVE) == 0) |
| 7578 | printf("Inactive SCB in Waiting List\n"); |
Hannes Reinecke | 53467e6 | 2006-01-24 10:43:26 +0100 | [diff] [blame] | 7579 | ahd_done_with_status(ahd, scb, status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7580 | /* FALLTHROUGH */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7581 | case SEARCH_REMOVE: |
| 7582 | ahd_rem_wscb(ahd, scbid, prev, next, tid); |
Hannes Reinecke | 53467e6 | 2006-01-24 10:43:26 +0100 | [diff] [blame] | 7583 | *list_tail = prev; |
| 7584 | if (SCBID_IS_NULL(prev)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7585 | *list_head = next; |
| 7586 | break; |
| 7587 | case SEARCH_PRINT: |
| 7588 | printf("0x%x ", scbid); |
| 7589 | case SEARCH_COUNT: |
| 7590 | prev = scbid; |
| 7591 | break; |
| 7592 | } |
| 7593 | if (found > AHD_SCB_MAX) |
| 7594 | panic("SCB LIST LOOP"); |
| 7595 | } |
| 7596 | if (action == SEARCH_COMPLETE |
| 7597 | || action == SEARCH_REMOVE) |
| 7598 | ahd_outw(ahd, CMDS_PENDING, ahd_inw(ahd, CMDS_PENDING) - found); |
| 7599 | return (found); |
| 7600 | } |
| 7601 | |
| 7602 | static void |
| 7603 | ahd_stitch_tid_list(struct ahd_softc *ahd, u_int tid_prev, |
| 7604 | u_int tid_cur, u_int tid_next) |
| 7605 | { |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 7606 | AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7607 | |
| 7608 | if (SCBID_IS_NULL(tid_cur)) { |
| 7609 | |
| 7610 | /* Bypass current TID list */ |
| 7611 | if (SCBID_IS_NULL(tid_prev)) { |
| 7612 | ahd_outw(ahd, WAITING_TID_HEAD, tid_next); |
| 7613 | } else { |
| 7614 | ahd_set_scbptr(ahd, tid_prev); |
| 7615 | ahd_outw(ahd, SCB_NEXT2, tid_next); |
| 7616 | } |
| 7617 | if (SCBID_IS_NULL(tid_next)) |
| 7618 | ahd_outw(ahd, WAITING_TID_TAIL, tid_prev); |
| 7619 | } else { |
| 7620 | |
| 7621 | /* Stitch through tid_cur */ |
| 7622 | if (SCBID_IS_NULL(tid_prev)) { |
| 7623 | ahd_outw(ahd, WAITING_TID_HEAD, tid_cur); |
| 7624 | } else { |
| 7625 | ahd_set_scbptr(ahd, tid_prev); |
| 7626 | ahd_outw(ahd, SCB_NEXT2, tid_cur); |
| 7627 | } |
| 7628 | ahd_set_scbptr(ahd, tid_cur); |
| 7629 | ahd_outw(ahd, SCB_NEXT2, tid_next); |
| 7630 | |
| 7631 | if (SCBID_IS_NULL(tid_next)) |
| 7632 | ahd_outw(ahd, WAITING_TID_TAIL, tid_cur); |
| 7633 | } |
| 7634 | } |
| 7635 | |
| 7636 | /* |
| 7637 | * Manipulate the waiting for selection list and return the |
| 7638 | * scb that follows the one that we remove. |
| 7639 | */ |
| 7640 | static u_int |
| 7641 | ahd_rem_wscb(struct ahd_softc *ahd, u_int scbid, |
| 7642 | u_int prev, u_int next, u_int tid) |
| 7643 | { |
| 7644 | u_int tail_offset; |
| 7645 | |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 7646 | AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7647 | if (!SCBID_IS_NULL(prev)) { |
| 7648 | ahd_set_scbptr(ahd, prev); |
| 7649 | ahd_outw(ahd, SCB_NEXT, next); |
| 7650 | } |
| 7651 | |
| 7652 | /* |
Hannes Reinecke | 53467e6 | 2006-01-24 10:43:26 +0100 | [diff] [blame] | 7653 | * SCBs that have MK_MESSAGE set in them may |
| 7654 | * cause the tail pointer to be updated without |
| 7655 | * setting the next pointer of the previous tail. |
| 7656 | * Only clear the tail if the removed SCB was |
| 7657 | * the tail. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7658 | */ |
| 7659 | tail_offset = WAITING_SCB_TAILS + (2 * tid); |
| 7660 | if (SCBID_IS_NULL(next) |
| 7661 | && ahd_inw(ahd, tail_offset) == scbid) |
| 7662 | ahd_outw(ahd, tail_offset, prev); |
Hannes Reinecke | 53467e6 | 2006-01-24 10:43:26 +0100 | [diff] [blame] | 7663 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7664 | ahd_add_scb_to_free_list(ahd, scbid); |
| 7665 | return (next); |
| 7666 | } |
| 7667 | |
| 7668 | /* |
| 7669 | * Add the SCB as selected by SCBPTR onto the on chip list of |
| 7670 | * free hardware SCBs. This list is empty/unused if we are not |
| 7671 | * performing SCB paging. |
| 7672 | */ |
| 7673 | static void |
| 7674 | ahd_add_scb_to_free_list(struct ahd_softc *ahd, u_int scbid) |
| 7675 | { |
| 7676 | /* XXX Need some other mechanism to designate "free". */ |
| 7677 | /* |
| 7678 | * Invalidate the tag so that our abort |
| 7679 | * routines don't think it's active. |
| 7680 | ahd_outb(ahd, SCB_TAG, SCB_LIST_NULL); |
| 7681 | */ |
| 7682 | } |
| 7683 | |
| 7684 | /******************************** Error Handling ******************************/ |
| 7685 | /* |
| 7686 | * Abort all SCBs that match the given description (target/channel/lun/tag), |
| 7687 | * setting their status to the passed in status if the status has not already |
| 7688 | * been modified from CAM_REQ_INPROG. This routine assumes that the sequencer |
| 7689 | * is paused before it is called. |
| 7690 | */ |
| 7691 | int |
| 7692 | ahd_abort_scbs(struct ahd_softc *ahd, int target, char channel, |
| 7693 | int lun, u_int tag, role_t role, uint32_t status) |
| 7694 | { |
| 7695 | struct scb *scbp; |
| 7696 | struct scb *scbp_next; |
| 7697 | u_int i, j; |
| 7698 | u_int maxtarget; |
| 7699 | u_int minlun; |
| 7700 | u_int maxlun; |
| 7701 | int found; |
| 7702 | ahd_mode_state saved_modes; |
| 7703 | |
| 7704 | /* restore this when we're done */ |
| 7705 | saved_modes = ahd_save_modes(ahd); |
| 7706 | ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); |
| 7707 | |
| 7708 | found = ahd_search_qinfifo(ahd, target, channel, lun, SCB_LIST_NULL, |
| 7709 | role, CAM_REQUEUE_REQ, SEARCH_COMPLETE); |
| 7710 | |
| 7711 | /* |
| 7712 | * Clean out the busy target table for any untagged commands. |
| 7713 | */ |
| 7714 | i = 0; |
| 7715 | maxtarget = 16; |
| 7716 | if (target != CAM_TARGET_WILDCARD) { |
| 7717 | i = target; |
| 7718 | if (channel == 'B') |
| 7719 | i += 8; |
| 7720 | maxtarget = i + 1; |
| 7721 | } |
| 7722 | |
| 7723 | if (lun == CAM_LUN_WILDCARD) { |
| 7724 | minlun = 0; |
| 7725 | maxlun = AHD_NUM_LUNS_NONPKT; |
| 7726 | } else if (lun >= AHD_NUM_LUNS_NONPKT) { |
| 7727 | minlun = maxlun = 0; |
| 7728 | } else { |
| 7729 | minlun = lun; |
| 7730 | maxlun = lun + 1; |
| 7731 | } |
| 7732 | |
| 7733 | if (role != ROLE_TARGET) { |
| 7734 | for (;i < maxtarget; i++) { |
| 7735 | for (j = minlun;j < maxlun; j++) { |
| 7736 | u_int scbid; |
| 7737 | u_int tcl; |
| 7738 | |
| 7739 | tcl = BUILD_TCL_RAW(i, 'A', j); |
| 7740 | scbid = ahd_find_busy_tcl(ahd, tcl); |
| 7741 | scbp = ahd_lookup_scb(ahd, scbid); |
| 7742 | if (scbp == NULL |
| 7743 | || ahd_match_scb(ahd, scbp, target, channel, |
| 7744 | lun, tag, role) == 0) |
| 7745 | continue; |
| 7746 | ahd_unbusy_tcl(ahd, BUILD_TCL_RAW(i, 'A', j)); |
| 7747 | } |
| 7748 | } |
| 7749 | } |
| 7750 | |
| 7751 | /* |
| 7752 | * Don't abort commands that have already completed, |
| 7753 | * but haven't quite made it up to the host yet. |
| 7754 | */ |
| 7755 | ahd_flush_qoutfifo(ahd); |
| 7756 | |
| 7757 | /* |
| 7758 | * Go through the pending CCB list and look for |
| 7759 | * commands for this target that are still active. |
| 7760 | * These are other tagged commands that were |
| 7761 | * disconnected when the reset occurred. |
| 7762 | */ |
| 7763 | scbp_next = LIST_FIRST(&ahd->pending_scbs); |
| 7764 | while (scbp_next != NULL) { |
| 7765 | scbp = scbp_next; |
| 7766 | scbp_next = LIST_NEXT(scbp, pending_links); |
| 7767 | if (ahd_match_scb(ahd, scbp, target, channel, lun, tag, role)) { |
| 7768 | cam_status ostat; |
| 7769 | |
| 7770 | ostat = ahd_get_transaction_status(scbp); |
| 7771 | if (ostat == CAM_REQ_INPROG) |
| 7772 | ahd_set_transaction_status(scbp, status); |
| 7773 | if (ahd_get_transaction_status(scbp) != CAM_REQ_CMP) |
| 7774 | ahd_freeze_scb(scbp); |
| 7775 | if ((scbp->flags & SCB_ACTIVE) == 0) |
| 7776 | printf("Inactive SCB on pending list\n"); |
| 7777 | ahd_done(ahd, scbp); |
| 7778 | found++; |
| 7779 | } |
| 7780 | } |
| 7781 | ahd_restore_modes(ahd, saved_modes); |
| 7782 | ahd_platform_abort_scbs(ahd, target, channel, lun, tag, role, status); |
| 7783 | ahd->flags |= AHD_UPDATE_PEND_CMDS; |
| 7784 | return found; |
| 7785 | } |
| 7786 | |
| 7787 | static void |
| 7788 | ahd_reset_current_bus(struct ahd_softc *ahd) |
| 7789 | { |
| 7790 | uint8_t scsiseq; |
| 7791 | |
| 7792 | AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); |
| 7793 | ahd_outb(ahd, SIMODE1, ahd_inb(ahd, SIMODE1) & ~ENSCSIRST); |
| 7794 | scsiseq = ahd_inb(ahd, SCSISEQ0) & ~(ENSELO|ENARBO|SCSIRSTO); |
| 7795 | ahd_outb(ahd, SCSISEQ0, scsiseq | SCSIRSTO); |
| 7796 | ahd_flush_device_writes(ahd); |
| 7797 | ahd_delay(AHD_BUSRESET_DELAY); |
| 7798 | /* Turn off the bus reset */ |
| 7799 | ahd_outb(ahd, SCSISEQ0, scsiseq); |
| 7800 | ahd_flush_device_writes(ahd); |
| 7801 | ahd_delay(AHD_BUSRESET_DELAY); |
| 7802 | if ((ahd->bugs & AHD_SCSIRST_BUG) != 0) { |
| 7803 | /* |
| 7804 | * 2A Razor #474 |
| 7805 | * Certain chip state is not cleared for |
| 7806 | * SCSI bus resets that we initiate, so |
| 7807 | * we must reset the chip. |
| 7808 | */ |
| 7809 | ahd_reset(ahd, /*reinit*/TRUE); |
| 7810 | ahd_intr_enable(ahd, /*enable*/TRUE); |
| 7811 | AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); |
| 7812 | } |
| 7813 | |
| 7814 | ahd_clear_intstat(ahd); |
| 7815 | } |
| 7816 | |
| 7817 | int |
| 7818 | ahd_reset_channel(struct ahd_softc *ahd, char channel, int initiate_reset) |
| 7819 | { |
| 7820 | struct ahd_devinfo devinfo; |
| 7821 | u_int initiator; |
| 7822 | u_int target; |
| 7823 | u_int max_scsiid; |
| 7824 | int found; |
| 7825 | u_int fifo; |
| 7826 | u_int next_fifo; |
Hannes Reinecke | f41b5ce | 2006-04-03 08:19:34 +0200 | [diff] [blame] | 7827 | uint8_t scsiseq; |
| 7828 | |
| 7829 | /* |
| 7830 | * Check if the last bus reset is cleared |
| 7831 | */ |
| 7832 | if (ahd->flags & AHD_BUS_RESET_ACTIVE) { |
| 7833 | printf("%s: bus reset still active\n", |
| 7834 | ahd_name(ahd)); |
| 7835 | return 0; |
| 7836 | } |
| 7837 | ahd->flags |= AHD_BUS_RESET_ACTIVE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7838 | |
| 7839 | ahd->pending_device = NULL; |
| 7840 | |
| 7841 | ahd_compile_devinfo(&devinfo, |
| 7842 | CAM_TARGET_WILDCARD, |
| 7843 | CAM_TARGET_WILDCARD, |
| 7844 | CAM_LUN_WILDCARD, |
| 7845 | channel, ROLE_UNKNOWN); |
| 7846 | ahd_pause(ahd); |
| 7847 | |
| 7848 | /* Make sure the sequencer is in a safe location. */ |
| 7849 | ahd_clear_critical_section(ahd); |
| 7850 | |
Hannes Reinecke | f41b5ce | 2006-04-03 08:19:34 +0200 | [diff] [blame] | 7851 | /* |
| 7852 | * Run our command complete fifos to ensure that we perform |
| 7853 | * completion processing on any commands that 'completed' |
| 7854 | * before the reset occurred. |
| 7855 | */ |
| 7856 | ahd_run_qoutfifo(ahd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7857 | #ifdef AHD_TARGET_MODE |
| 7858 | if ((ahd->flags & AHD_TARGETROLE) != 0) { |
| 7859 | ahd_run_tqinfifo(ahd, /*paused*/TRUE); |
| 7860 | } |
| 7861 | #endif |
| 7862 | ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); |
| 7863 | |
| 7864 | /* |
| 7865 | * Disable selections so no automatic hardware |
| 7866 | * functions will modify chip state. |
| 7867 | */ |
| 7868 | ahd_outb(ahd, SCSISEQ0, 0); |
| 7869 | ahd_outb(ahd, SCSISEQ1, 0); |
| 7870 | |
| 7871 | /* |
| 7872 | * Safely shut down our DMA engines. Always start with |
| 7873 | * the FIFO that is not currently active (if any are |
| 7874 | * actively connected). |
| 7875 | */ |
| 7876 | next_fifo = fifo = ahd_inb(ahd, DFFSTAT) & CURRFIFO; |
| 7877 | if (next_fifo > CURRFIFO_1) |
| 7878 | /* If disconneced, arbitrarily start with FIFO1. */ |
| 7879 | next_fifo = fifo = 0; |
| 7880 | do { |
| 7881 | next_fifo ^= CURRFIFO_1; |
| 7882 | ahd_set_modes(ahd, next_fifo, next_fifo); |
| 7883 | ahd_outb(ahd, DFCNTRL, |
| 7884 | ahd_inb(ahd, DFCNTRL) & ~(SCSIEN|HDMAEN)); |
| 7885 | while ((ahd_inb(ahd, DFCNTRL) & HDMAENACK) != 0) |
| 7886 | ahd_delay(10); |
| 7887 | /* |
| 7888 | * Set CURRFIFO to the now inactive channel. |
| 7889 | */ |
| 7890 | ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); |
| 7891 | ahd_outb(ahd, DFFSTAT, next_fifo); |
| 7892 | } while (next_fifo != fifo); |
| 7893 | |
| 7894 | /* |
| 7895 | * Reset the bus if we are initiating this reset |
| 7896 | */ |
| 7897 | ahd_clear_msg_state(ahd); |
| 7898 | ahd_outb(ahd, SIMODE1, |
Hannes Reinecke | ba62cd2 | 2006-01-12 12:07:02 +0100 | [diff] [blame] | 7899 | ahd_inb(ahd, SIMODE1) & ~(ENBUSFREE|ENSCSIRST)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7900 | |
| 7901 | if (initiate_reset) |
| 7902 | ahd_reset_current_bus(ahd); |
| 7903 | |
| 7904 | ahd_clear_intstat(ahd); |
| 7905 | |
| 7906 | /* |
| 7907 | * Clean up all the state information for the |
| 7908 | * pending transactions on this bus. |
| 7909 | */ |
| 7910 | found = ahd_abort_scbs(ahd, CAM_TARGET_WILDCARD, channel, |
| 7911 | CAM_LUN_WILDCARD, SCB_LIST_NULL, |
| 7912 | ROLE_UNKNOWN, CAM_SCSI_BUS_RESET); |
| 7913 | |
| 7914 | /* |
| 7915 | * Cleanup anything left in the FIFOs. |
| 7916 | */ |
| 7917 | ahd_clear_fifo(ahd, 0); |
| 7918 | ahd_clear_fifo(ahd, 1); |
| 7919 | |
| 7920 | /* |
Hannes Reinecke | f41b5ce | 2006-04-03 08:19:34 +0200 | [diff] [blame] | 7921 | * Reenable selections |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7922 | */ |
Hannes Reinecke | f41b5ce | 2006-04-03 08:19:34 +0200 | [diff] [blame] | 7923 | ahd_outb(ahd, SIMODE1, ahd_inb(ahd, SIMODE1) | ENSCSIRST); |
| 7924 | scsiseq = ahd_inb(ahd, SCSISEQ_TEMPLATE); |
| 7925 | ahd_outb(ahd, SCSISEQ1, scsiseq & (ENSELI|ENRSELI|ENAUTOATNP)); |
| 7926 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7927 | max_scsiid = (ahd->features & AHD_WIDE) ? 15 : 7; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7928 | #ifdef AHD_TARGET_MODE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7929 | /* |
| 7930 | * Send an immediate notify ccb to all target more peripheral |
| 7931 | * drivers affected by this action. |
| 7932 | */ |
| 7933 | for (target = 0; target <= max_scsiid; target++) { |
| 7934 | struct ahd_tmode_tstate* tstate; |
| 7935 | u_int lun; |
| 7936 | |
| 7937 | tstate = ahd->enabled_targets[target]; |
| 7938 | if (tstate == NULL) |
| 7939 | continue; |
| 7940 | for (lun = 0; lun < AHD_NUM_LUNS; lun++) { |
| 7941 | struct ahd_tmode_lstate* lstate; |
| 7942 | |
| 7943 | lstate = tstate->enabled_luns[lun]; |
| 7944 | if (lstate == NULL) |
| 7945 | continue; |
| 7946 | |
| 7947 | ahd_queue_lstate_event(ahd, lstate, CAM_TARGET_WILDCARD, |
| 7948 | EVENT_TYPE_BUS_RESET, /*arg*/0); |
| 7949 | ahd_send_lstate_events(ahd, lstate); |
| 7950 | } |
| 7951 | } |
| 7952 | #endif |
| 7953 | /* Notify the XPT that a bus reset occurred */ |
| 7954 | ahd_send_async(ahd, devinfo.channel, CAM_TARGET_WILDCARD, |
| 7955 | CAM_LUN_WILDCARD, AC_BUS_RESET, NULL); |
Hannes Reinecke | f41b5ce | 2006-04-03 08:19:34 +0200 | [diff] [blame] | 7956 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7957 | /* |
Hannes Reinecke | f41b5ce | 2006-04-03 08:19:34 +0200 | [diff] [blame] | 7958 | * Revert to async/narrow transfers until we renegotiate. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7959 | */ |
Hannes Reinecke | f41b5ce | 2006-04-03 08:19:34 +0200 | [diff] [blame] | 7960 | for (target = 0; target <= max_scsiid; target++) { |
| 7961 | |
| 7962 | if (ahd->enabled_targets[target] == NULL) |
| 7963 | continue; |
| 7964 | for (initiator = 0; initiator <= max_scsiid; initiator++) { |
| 7965 | struct ahd_devinfo devinfo; |
| 7966 | |
| 7967 | ahd_compile_devinfo(&devinfo, target, initiator, |
| 7968 | CAM_LUN_WILDCARD, |
| 7969 | 'A', ROLE_UNKNOWN); |
| 7970 | ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT, |
| 7971 | AHD_TRANS_CUR, /*paused*/TRUE); |
| 7972 | ahd_set_syncrate(ahd, &devinfo, /*period*/0, |
| 7973 | /*offset*/0, /*ppr_options*/0, |
| 7974 | AHD_TRANS_CUR, /*paused*/TRUE); |
| 7975 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7976 | } |
Hannes Reinecke | f41b5ce | 2006-04-03 08:19:34 +0200 | [diff] [blame] | 7977 | |
| 7978 | ahd_restart(ahd); |
| 7979 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7980 | return (found); |
| 7981 | } |
| 7982 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7983 | /**************************** Statistics Processing ***************************/ |
| 7984 | static void |
| 7985 | ahd_stat_timer(void *arg) |
| 7986 | { |
Christoph Hellwig | 85a4652 | 2005-08-15 13:28:46 +0200 | [diff] [blame] | 7987 | struct ahd_softc *ahd = arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7988 | u_long s; |
| 7989 | int enint_coal; |
| 7990 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7991 | ahd_lock(ahd, &s); |
| 7992 | |
| 7993 | enint_coal = ahd->hs_mailbox & ENINT_COALESCE; |
| 7994 | if (ahd->cmdcmplt_total > ahd->int_coalescing_threshold) |
| 7995 | enint_coal |= ENINT_COALESCE; |
| 7996 | else if (ahd->cmdcmplt_total < ahd->int_coalescing_stop_threshold) |
| 7997 | enint_coal &= ~ENINT_COALESCE; |
| 7998 | |
| 7999 | if (enint_coal != (ahd->hs_mailbox & ENINT_COALESCE)) { |
| 8000 | ahd_enable_coalescing(ahd, enint_coal); |
| 8001 | #ifdef AHD_DEBUG |
| 8002 | if ((ahd_debug & AHD_SHOW_INT_COALESCING) != 0) |
| 8003 | printf("%s: Interrupt coalescing " |
| 8004 | "now %sabled. Cmds %d\n", |
| 8005 | ahd_name(ahd), |
| 8006 | (enint_coal & ENINT_COALESCE) ? "en" : "dis", |
| 8007 | ahd->cmdcmplt_total); |
| 8008 | #endif |
| 8009 | } |
| 8010 | |
| 8011 | ahd->cmdcmplt_bucket = (ahd->cmdcmplt_bucket+1) & (AHD_STAT_BUCKETS-1); |
| 8012 | ahd->cmdcmplt_total -= ahd->cmdcmplt_counts[ahd->cmdcmplt_bucket]; |
| 8013 | ahd->cmdcmplt_counts[ahd->cmdcmplt_bucket] = 0; |
| 8014 | ahd_timer_reset(&ahd->stat_timer, AHD_STAT_UPDATE_US, |
| 8015 | ahd_stat_timer, ahd); |
| 8016 | ahd_unlock(ahd, &s); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8017 | } |
| 8018 | |
| 8019 | /****************************** Status Processing *****************************/ |
| 8020 | void |
| 8021 | ahd_handle_scb_status(struct ahd_softc *ahd, struct scb *scb) |
| 8022 | { |
| 8023 | if (scb->hscb->shared_data.istatus.scsi_status != 0) { |
| 8024 | ahd_handle_scsi_status(ahd, scb); |
| 8025 | } else { |
| 8026 | ahd_calc_residual(ahd, scb); |
| 8027 | ahd_done(ahd, scb); |
| 8028 | } |
| 8029 | } |
| 8030 | |
| 8031 | void |
| 8032 | ahd_handle_scsi_status(struct ahd_softc *ahd, struct scb *scb) |
| 8033 | { |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 8034 | struct hardware_scb *hscb; |
| 8035 | int paused; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8036 | |
| 8037 | /* |
| 8038 | * The sequencer freezes its select-out queue |
| 8039 | * anytime a SCSI status error occurs. We must |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 8040 | * handle the error and increment our qfreeze count |
| 8041 | * to allow the sequencer to continue. We don't |
| 8042 | * bother clearing critical sections here since all |
| 8043 | * operations are on data structures that the sequencer |
| 8044 | * is not touching once the queue is frozen. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8045 | */ |
| 8046 | hscb = scb->hscb; |
| 8047 | |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 8048 | if (ahd_is_paused(ahd)) { |
| 8049 | paused = 1; |
| 8050 | } else { |
| 8051 | paused = 0; |
| 8052 | ahd_pause(ahd); |
| 8053 | } |
| 8054 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8055 | /* Freeze the queue until the client sees the error. */ |
| 8056 | ahd_freeze_devq(ahd, scb); |
| 8057 | ahd_freeze_scb(scb); |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 8058 | ahd->qfreeze_cnt++; |
| 8059 | ahd_outw(ahd, KERNEL_QFREEZE_COUNT, ahd->qfreeze_cnt); |
| 8060 | |
| 8061 | if (paused == 0) |
| 8062 | ahd_unpause(ahd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8063 | |
| 8064 | /* Don't want to clobber the original sense code */ |
| 8065 | if ((scb->flags & SCB_SENSE) != 0) { |
| 8066 | /* |
| 8067 | * Clear the SCB_SENSE Flag and perform |
| 8068 | * a normal command completion. |
| 8069 | */ |
| 8070 | scb->flags &= ~SCB_SENSE; |
| 8071 | ahd_set_transaction_status(scb, CAM_AUTOSENSE_FAIL); |
| 8072 | ahd_done(ahd, scb); |
| 8073 | return; |
| 8074 | } |
| 8075 | ahd_set_transaction_status(scb, CAM_SCSI_STATUS_ERROR); |
| 8076 | ahd_set_scsi_status(scb, hscb->shared_data.istatus.scsi_status); |
| 8077 | switch (hscb->shared_data.istatus.scsi_status) { |
| 8078 | case STATUS_PKT_SENSE: |
| 8079 | { |
| 8080 | struct scsi_status_iu_header *siu; |
| 8081 | |
| 8082 | ahd_sync_sense(ahd, scb, BUS_DMASYNC_POSTREAD); |
| 8083 | siu = (struct scsi_status_iu_header *)scb->sense_data; |
| 8084 | ahd_set_scsi_status(scb, siu->status); |
| 8085 | #ifdef AHD_DEBUG |
| 8086 | if ((ahd_debug & AHD_SHOW_SENSE) != 0) { |
| 8087 | ahd_print_path(ahd, scb); |
| 8088 | printf("SCB 0x%x Received PKT Status of 0x%x\n", |
| 8089 | SCB_GET_TAG(scb), siu->status); |
| 8090 | printf("\tflags = 0x%x, sense len = 0x%x, " |
| 8091 | "pktfail = 0x%x\n", |
| 8092 | siu->flags, scsi_4btoul(siu->sense_length), |
| 8093 | scsi_4btoul(siu->pkt_failures_length)); |
| 8094 | } |
| 8095 | #endif |
| 8096 | if ((siu->flags & SIU_RSPVALID) != 0) { |
| 8097 | ahd_print_path(ahd, scb); |
| 8098 | if (scsi_4btoul(siu->pkt_failures_length) < 4) { |
| 8099 | printf("Unable to parse pkt_failures\n"); |
| 8100 | } else { |
| 8101 | |
| 8102 | switch (SIU_PKTFAIL_CODE(siu)) { |
| 8103 | case SIU_PFC_NONE: |
| 8104 | printf("No packet failure found\n"); |
| 8105 | break; |
| 8106 | case SIU_PFC_CIU_FIELDS_INVALID: |
| 8107 | printf("Invalid Command IU Field\n"); |
| 8108 | break; |
| 8109 | case SIU_PFC_TMF_NOT_SUPPORTED: |
| 8110 | printf("TMF not supportd\n"); |
| 8111 | break; |
| 8112 | case SIU_PFC_TMF_FAILED: |
| 8113 | printf("TMF failed\n"); |
| 8114 | break; |
| 8115 | case SIU_PFC_INVALID_TYPE_CODE: |
| 8116 | printf("Invalid L_Q Type code\n"); |
| 8117 | break; |
| 8118 | case SIU_PFC_ILLEGAL_REQUEST: |
| 8119 | printf("Illegal request\n"); |
| 8120 | default: |
| 8121 | break; |
| 8122 | } |
| 8123 | } |
| 8124 | if (siu->status == SCSI_STATUS_OK) |
| 8125 | ahd_set_transaction_status(scb, |
| 8126 | CAM_REQ_CMP_ERR); |
| 8127 | } |
| 8128 | if ((siu->flags & SIU_SNSVALID) != 0) { |
| 8129 | scb->flags |= SCB_PKT_SENSE; |
| 8130 | #ifdef AHD_DEBUG |
| 8131 | if ((ahd_debug & AHD_SHOW_SENSE) != 0) |
| 8132 | printf("Sense data available\n"); |
| 8133 | #endif |
| 8134 | } |
| 8135 | ahd_done(ahd, scb); |
| 8136 | break; |
| 8137 | } |
| 8138 | case SCSI_STATUS_CMD_TERMINATED: |
| 8139 | case SCSI_STATUS_CHECK_COND: |
| 8140 | { |
| 8141 | struct ahd_devinfo devinfo; |
| 8142 | struct ahd_dma_seg *sg; |
| 8143 | struct scsi_sense *sc; |
| 8144 | struct ahd_initiator_tinfo *targ_info; |
| 8145 | struct ahd_tmode_tstate *tstate; |
| 8146 | struct ahd_transinfo *tinfo; |
| 8147 | #ifdef AHD_DEBUG |
| 8148 | if (ahd_debug & AHD_SHOW_SENSE) { |
| 8149 | ahd_print_path(ahd, scb); |
| 8150 | printf("SCB %d: requests Check Status\n", |
| 8151 | SCB_GET_TAG(scb)); |
| 8152 | } |
| 8153 | #endif |
| 8154 | |
| 8155 | if (ahd_perform_autosense(scb) == 0) |
| 8156 | break; |
| 8157 | |
| 8158 | ahd_compile_devinfo(&devinfo, SCB_GET_OUR_ID(scb), |
| 8159 | SCB_GET_TARGET(ahd, scb), |
| 8160 | SCB_GET_LUN(scb), |
| 8161 | SCB_GET_CHANNEL(ahd, scb), |
| 8162 | ROLE_INITIATOR); |
| 8163 | targ_info = ahd_fetch_transinfo(ahd, |
| 8164 | devinfo.channel, |
| 8165 | devinfo.our_scsiid, |
| 8166 | devinfo.target, |
| 8167 | &tstate); |
| 8168 | tinfo = &targ_info->curr; |
| 8169 | sg = scb->sg_list; |
| 8170 | sc = (struct scsi_sense *)hscb->shared_data.idata.cdb; |
| 8171 | /* |
| 8172 | * Save off the residual if there is one. |
| 8173 | */ |
| 8174 | ahd_update_residual(ahd, scb); |
| 8175 | #ifdef AHD_DEBUG |
| 8176 | if (ahd_debug & AHD_SHOW_SENSE) { |
| 8177 | ahd_print_path(ahd, scb); |
| 8178 | printf("Sending Sense\n"); |
| 8179 | } |
| 8180 | #endif |
| 8181 | scb->sg_count = 0; |
| 8182 | sg = ahd_sg_setup(ahd, scb, sg, ahd_get_sense_bufaddr(ahd, scb), |
| 8183 | ahd_get_sense_bufsize(ahd, scb), |
| 8184 | /*last*/TRUE); |
| 8185 | sc->opcode = REQUEST_SENSE; |
| 8186 | sc->byte2 = 0; |
| 8187 | if (tinfo->protocol_version <= SCSI_REV_2 |
| 8188 | && SCB_GET_LUN(scb) < 8) |
| 8189 | sc->byte2 = SCB_GET_LUN(scb) << 5; |
| 8190 | sc->unused[0] = 0; |
| 8191 | sc->unused[1] = 0; |
| 8192 | sc->length = ahd_get_sense_bufsize(ahd, scb); |
| 8193 | sc->control = 0; |
| 8194 | |
| 8195 | /* |
| 8196 | * We can't allow the target to disconnect. |
| 8197 | * This will be an untagged transaction and |
| 8198 | * having the target disconnect will make this |
| 8199 | * transaction indestinguishable from outstanding |
| 8200 | * tagged transactions. |
| 8201 | */ |
| 8202 | hscb->control = 0; |
| 8203 | |
| 8204 | /* |
| 8205 | * This request sense could be because the |
| 8206 | * the device lost power or in some other |
| 8207 | * way has lost our transfer negotiations. |
| 8208 | * Renegotiate if appropriate. Unit attention |
| 8209 | * errors will be reported before any data |
| 8210 | * phases occur. |
| 8211 | */ |
| 8212 | if (ahd_get_residual(scb) == ahd_get_transfer_length(scb)) { |
| 8213 | ahd_update_neg_request(ahd, &devinfo, |
| 8214 | tstate, targ_info, |
| 8215 | AHD_NEG_IF_NON_ASYNC); |
| 8216 | } |
| 8217 | if (tstate->auto_negotiate & devinfo.target_mask) { |
| 8218 | hscb->control |= MK_MESSAGE; |
| 8219 | scb->flags &= |
| 8220 | ~(SCB_NEGOTIATE|SCB_ABORT|SCB_DEVICE_RESET); |
| 8221 | scb->flags |= SCB_AUTO_NEGOTIATE; |
| 8222 | } |
| 8223 | hscb->cdb_len = sizeof(*sc); |
| 8224 | ahd_setup_data_scb(ahd, scb); |
| 8225 | scb->flags |= SCB_SENSE; |
| 8226 | ahd_queue_scb(ahd, scb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8227 | break; |
| 8228 | } |
| 8229 | case SCSI_STATUS_OK: |
| 8230 | printf("%s: Interrupted for staus of 0???\n", |
| 8231 | ahd_name(ahd)); |
| 8232 | /* FALLTHROUGH */ |
| 8233 | default: |
| 8234 | ahd_done(ahd, scb); |
| 8235 | break; |
| 8236 | } |
| 8237 | } |
| 8238 | |
| 8239 | /* |
| 8240 | * Calculate the residual for a just completed SCB. |
| 8241 | */ |
| 8242 | void |
| 8243 | ahd_calc_residual(struct ahd_softc *ahd, struct scb *scb) |
| 8244 | { |
| 8245 | struct hardware_scb *hscb; |
| 8246 | struct initiator_status *spkt; |
| 8247 | uint32_t sgptr; |
| 8248 | uint32_t resid_sgptr; |
| 8249 | uint32_t resid; |
| 8250 | |
| 8251 | /* |
| 8252 | * 5 cases. |
| 8253 | * 1) No residual. |
| 8254 | * SG_STATUS_VALID clear in sgptr. |
| 8255 | * 2) Transferless command |
| 8256 | * 3) Never performed any transfers. |
| 8257 | * sgptr has SG_FULL_RESID set. |
| 8258 | * 4) No residual but target did not |
| 8259 | * save data pointers after the |
| 8260 | * last transfer, so sgptr was |
| 8261 | * never updated. |
| 8262 | * 5) We have a partial residual. |
| 8263 | * Use residual_sgptr to determine |
| 8264 | * where we are. |
| 8265 | */ |
| 8266 | |
| 8267 | hscb = scb->hscb; |
| 8268 | sgptr = ahd_le32toh(hscb->sgptr); |
| 8269 | if ((sgptr & SG_STATUS_VALID) == 0) |
| 8270 | /* Case 1 */ |
| 8271 | return; |
| 8272 | sgptr &= ~SG_STATUS_VALID; |
| 8273 | |
| 8274 | if ((sgptr & SG_LIST_NULL) != 0) |
| 8275 | /* Case 2 */ |
| 8276 | return; |
| 8277 | |
| 8278 | /* |
| 8279 | * Residual fields are the same in both |
| 8280 | * target and initiator status packets, |
| 8281 | * so we can always use the initiator fields |
| 8282 | * regardless of the role for this SCB. |
| 8283 | */ |
| 8284 | spkt = &hscb->shared_data.istatus; |
| 8285 | resid_sgptr = ahd_le32toh(spkt->residual_sgptr); |
| 8286 | if ((sgptr & SG_FULL_RESID) != 0) { |
| 8287 | /* Case 3 */ |
| 8288 | resid = ahd_get_transfer_length(scb); |
| 8289 | } else if ((resid_sgptr & SG_LIST_NULL) != 0) { |
| 8290 | /* Case 4 */ |
| 8291 | return; |
| 8292 | } else if ((resid_sgptr & SG_OVERRUN_RESID) != 0) { |
| 8293 | ahd_print_path(ahd, scb); |
| 8294 | printf("data overrun detected Tag == 0x%x.\n", |
| 8295 | SCB_GET_TAG(scb)); |
| 8296 | ahd_freeze_devq(ahd, scb); |
| 8297 | ahd_set_transaction_status(scb, CAM_DATA_RUN_ERR); |
| 8298 | ahd_freeze_scb(scb); |
| 8299 | return; |
| 8300 | } else if ((resid_sgptr & ~SG_PTR_MASK) != 0) { |
| 8301 | panic("Bogus resid sgptr value 0x%x\n", resid_sgptr); |
| 8302 | /* NOTREACHED */ |
| 8303 | } else { |
| 8304 | struct ahd_dma_seg *sg; |
| 8305 | |
| 8306 | /* |
| 8307 | * Remainder of the SG where the transfer |
| 8308 | * stopped. |
| 8309 | */ |
| 8310 | resid = ahd_le32toh(spkt->residual_datacnt) & AHD_SG_LEN_MASK; |
| 8311 | sg = ahd_sg_bus_to_virt(ahd, scb, resid_sgptr & SG_PTR_MASK); |
| 8312 | |
| 8313 | /* The residual sg_ptr always points to the next sg */ |
| 8314 | sg--; |
| 8315 | |
| 8316 | /* |
| 8317 | * Add up the contents of all residual |
| 8318 | * SG segments that are after the SG where |
| 8319 | * the transfer stopped. |
| 8320 | */ |
| 8321 | while ((ahd_le32toh(sg->len) & AHD_DMA_LAST_SEG) == 0) { |
| 8322 | sg++; |
| 8323 | resid += ahd_le32toh(sg->len) & AHD_SG_LEN_MASK; |
| 8324 | } |
| 8325 | } |
| 8326 | if ((scb->flags & SCB_SENSE) == 0) |
| 8327 | ahd_set_residual(scb, resid); |
| 8328 | else |
| 8329 | ahd_set_sense_residual(scb, resid); |
| 8330 | |
| 8331 | #ifdef AHD_DEBUG |
| 8332 | if ((ahd_debug & AHD_SHOW_MISC) != 0) { |
| 8333 | ahd_print_path(ahd, scb); |
| 8334 | printf("Handled %sResidual of %d bytes\n", |
| 8335 | (scb->flags & SCB_SENSE) ? "Sense " : "", resid); |
| 8336 | } |
| 8337 | #endif |
| 8338 | } |
| 8339 | |
| 8340 | /******************************* Target Mode **********************************/ |
| 8341 | #ifdef AHD_TARGET_MODE |
| 8342 | /* |
| 8343 | * Add a target mode event to this lun's queue |
| 8344 | */ |
| 8345 | static void |
| 8346 | ahd_queue_lstate_event(struct ahd_softc *ahd, struct ahd_tmode_lstate *lstate, |
| 8347 | u_int initiator_id, u_int event_type, u_int event_arg) |
| 8348 | { |
| 8349 | struct ahd_tmode_event *event; |
| 8350 | int pending; |
| 8351 | |
| 8352 | xpt_freeze_devq(lstate->path, /*count*/1); |
| 8353 | if (lstate->event_w_idx >= lstate->event_r_idx) |
| 8354 | pending = lstate->event_w_idx - lstate->event_r_idx; |
| 8355 | else |
| 8356 | pending = AHD_TMODE_EVENT_BUFFER_SIZE + 1 |
| 8357 | - (lstate->event_r_idx - lstate->event_w_idx); |
| 8358 | |
| 8359 | if (event_type == EVENT_TYPE_BUS_RESET |
| 8360 | || event_type == MSG_BUS_DEV_RESET) { |
| 8361 | /* |
| 8362 | * Any earlier events are irrelevant, so reset our buffer. |
| 8363 | * This has the effect of allowing us to deal with reset |
| 8364 | * floods (an external device holding down the reset line) |
| 8365 | * without losing the event that is really interesting. |
| 8366 | */ |
| 8367 | lstate->event_r_idx = 0; |
| 8368 | lstate->event_w_idx = 0; |
| 8369 | xpt_release_devq(lstate->path, pending, /*runqueue*/FALSE); |
| 8370 | } |
| 8371 | |
| 8372 | if (pending == AHD_TMODE_EVENT_BUFFER_SIZE) { |
| 8373 | xpt_print_path(lstate->path); |
| 8374 | printf("immediate event %x:%x lost\n", |
| 8375 | lstate->event_buffer[lstate->event_r_idx].event_type, |
| 8376 | lstate->event_buffer[lstate->event_r_idx].event_arg); |
| 8377 | lstate->event_r_idx++; |
| 8378 | if (lstate->event_r_idx == AHD_TMODE_EVENT_BUFFER_SIZE) |
| 8379 | lstate->event_r_idx = 0; |
| 8380 | xpt_release_devq(lstate->path, /*count*/1, /*runqueue*/FALSE); |
| 8381 | } |
| 8382 | |
| 8383 | event = &lstate->event_buffer[lstate->event_w_idx]; |
| 8384 | event->initiator_id = initiator_id; |
| 8385 | event->event_type = event_type; |
| 8386 | event->event_arg = event_arg; |
| 8387 | lstate->event_w_idx++; |
| 8388 | if (lstate->event_w_idx == AHD_TMODE_EVENT_BUFFER_SIZE) |
| 8389 | lstate->event_w_idx = 0; |
| 8390 | } |
| 8391 | |
| 8392 | /* |
| 8393 | * Send any target mode events queued up waiting |
| 8394 | * for immediate notify resources. |
| 8395 | */ |
| 8396 | void |
| 8397 | ahd_send_lstate_events(struct ahd_softc *ahd, struct ahd_tmode_lstate *lstate) |
| 8398 | { |
| 8399 | struct ccb_hdr *ccbh; |
| 8400 | struct ccb_immed_notify *inot; |
| 8401 | |
| 8402 | while (lstate->event_r_idx != lstate->event_w_idx |
| 8403 | && (ccbh = SLIST_FIRST(&lstate->immed_notifies)) != NULL) { |
| 8404 | struct ahd_tmode_event *event; |
| 8405 | |
| 8406 | event = &lstate->event_buffer[lstate->event_r_idx]; |
| 8407 | SLIST_REMOVE_HEAD(&lstate->immed_notifies, sim_links.sle); |
| 8408 | inot = (struct ccb_immed_notify *)ccbh; |
| 8409 | switch (event->event_type) { |
| 8410 | case EVENT_TYPE_BUS_RESET: |
| 8411 | ccbh->status = CAM_SCSI_BUS_RESET|CAM_DEV_QFRZN; |
| 8412 | break; |
| 8413 | default: |
| 8414 | ccbh->status = CAM_MESSAGE_RECV|CAM_DEV_QFRZN; |
| 8415 | inot->message_args[0] = event->event_type; |
| 8416 | inot->message_args[1] = event->event_arg; |
| 8417 | break; |
| 8418 | } |
| 8419 | inot->initiator_id = event->initiator_id; |
| 8420 | inot->sense_len = 0; |
| 8421 | xpt_done((union ccb *)inot); |
| 8422 | lstate->event_r_idx++; |
| 8423 | if (lstate->event_r_idx == AHD_TMODE_EVENT_BUFFER_SIZE) |
| 8424 | lstate->event_r_idx = 0; |
| 8425 | } |
| 8426 | } |
| 8427 | #endif |
| 8428 | |
| 8429 | /******************** Sequencer Program Patching/Download *********************/ |
| 8430 | |
| 8431 | #ifdef AHD_DUMP_SEQ |
| 8432 | void |
| 8433 | ahd_dumpseq(struct ahd_softc* ahd) |
| 8434 | { |
| 8435 | int i; |
| 8436 | int max_prog; |
| 8437 | |
| 8438 | max_prog = 2048; |
| 8439 | |
| 8440 | ahd_outb(ahd, SEQCTL0, PERRORDIS|FAILDIS|FASTMODE|LOADRAM); |
Hannes Reinecke | ba62cd2 | 2006-01-12 12:07:02 +0100 | [diff] [blame] | 8441 | ahd_outw(ahd, PRGMCNT, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8442 | for (i = 0; i < max_prog; i++) { |
| 8443 | uint8_t ins_bytes[4]; |
| 8444 | |
| 8445 | ahd_insb(ahd, SEQRAM, ins_bytes, 4); |
| 8446 | printf("0x%08x\n", ins_bytes[0] << 24 |
| 8447 | | ins_bytes[1] << 16 |
| 8448 | | ins_bytes[2] << 8 |
| 8449 | | ins_bytes[3]); |
| 8450 | } |
| 8451 | } |
| 8452 | #endif |
| 8453 | |
| 8454 | static void |
| 8455 | ahd_loadseq(struct ahd_softc *ahd) |
| 8456 | { |
| 8457 | struct cs cs_table[num_critical_sections]; |
| 8458 | u_int begin_set[num_critical_sections]; |
| 8459 | u_int end_set[num_critical_sections]; |
| 8460 | struct patch *cur_patch; |
| 8461 | u_int cs_count; |
| 8462 | u_int cur_cs; |
| 8463 | u_int i; |
| 8464 | int downloaded; |
| 8465 | u_int skip_addr; |
| 8466 | u_int sg_prefetch_cnt; |
| 8467 | u_int sg_prefetch_cnt_limit; |
| 8468 | u_int sg_prefetch_align; |
| 8469 | u_int sg_size; |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 8470 | u_int cacheline_mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8471 | uint8_t download_consts[DOWNLOAD_CONST_COUNT]; |
| 8472 | |
| 8473 | if (bootverbose) |
| 8474 | printf("%s: Downloading Sequencer Program...", |
| 8475 | ahd_name(ahd)); |
| 8476 | |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 8477 | #if DOWNLOAD_CONST_COUNT != 8 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8478 | #error "Download Const Mismatch" |
| 8479 | #endif |
| 8480 | /* |
| 8481 | * Start out with 0 critical sections |
| 8482 | * that apply to this firmware load. |
| 8483 | */ |
| 8484 | cs_count = 0; |
| 8485 | cur_cs = 0; |
| 8486 | memset(begin_set, 0, sizeof(begin_set)); |
| 8487 | memset(end_set, 0, sizeof(end_set)); |
| 8488 | |
| 8489 | /* |
| 8490 | * Setup downloadable constant table. |
| 8491 | * |
| 8492 | * The computation for the S/G prefetch variables is |
| 8493 | * a bit complicated. We would like to always fetch |
| 8494 | * in terms of cachelined sized increments. However, |
| 8495 | * if the cacheline is not an even multiple of the |
| 8496 | * SG element size or is larger than our SG RAM, using |
| 8497 | * just the cache size might leave us with only a portion |
| 8498 | * of an SG element at the tail of a prefetch. If the |
| 8499 | * cacheline is larger than our S/G prefetch buffer less |
| 8500 | * the size of an SG element, we may round down to a cacheline |
| 8501 | * that doesn't contain any or all of the S/G of interest |
| 8502 | * within the bounds of our S/G ram. Provide variables to |
| 8503 | * the sequencer that will allow it to handle these edge |
| 8504 | * cases. |
| 8505 | */ |
| 8506 | /* Start by aligning to the nearest cacheline. */ |
| 8507 | sg_prefetch_align = ahd->pci_cachesize; |
| 8508 | if (sg_prefetch_align == 0) |
| 8509 | sg_prefetch_align = 8; |
| 8510 | /* Round down to the nearest power of 2. */ |
| 8511 | while (powerof2(sg_prefetch_align) == 0) |
| 8512 | sg_prefetch_align--; |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 8513 | |
| 8514 | cacheline_mask = sg_prefetch_align - 1; |
| 8515 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8516 | /* |
| 8517 | * If the cacheline boundary is greater than half our prefetch RAM |
| 8518 | * we risk not being able to fetch even a single complete S/G |
| 8519 | * segment if we align to that boundary. |
| 8520 | */ |
| 8521 | if (sg_prefetch_align > CCSGADDR_MAX/2) |
| 8522 | sg_prefetch_align = CCSGADDR_MAX/2; |
| 8523 | /* Start by fetching a single cacheline. */ |
| 8524 | sg_prefetch_cnt = sg_prefetch_align; |
| 8525 | /* |
| 8526 | * Increment the prefetch count by cachelines until |
| 8527 | * at least one S/G element will fit. |
| 8528 | */ |
| 8529 | sg_size = sizeof(struct ahd_dma_seg); |
| 8530 | if ((ahd->flags & AHD_64BIT_ADDRESSING) != 0) |
| 8531 | sg_size = sizeof(struct ahd_dma64_seg); |
| 8532 | while (sg_prefetch_cnt < sg_size) |
| 8533 | sg_prefetch_cnt += sg_prefetch_align; |
| 8534 | /* |
| 8535 | * If the cacheline is not an even multiple of |
| 8536 | * the S/G size, we may only get a partial S/G when |
| 8537 | * we align. Add a cacheline if this is the case. |
| 8538 | */ |
| 8539 | if ((sg_prefetch_align % sg_size) != 0 |
| 8540 | && (sg_prefetch_cnt < CCSGADDR_MAX)) |
| 8541 | sg_prefetch_cnt += sg_prefetch_align; |
| 8542 | /* |
| 8543 | * Lastly, compute a value that the sequencer can use |
| 8544 | * to determine if the remainder of the CCSGRAM buffer |
| 8545 | * has a full S/G element in it. |
| 8546 | */ |
| 8547 | sg_prefetch_cnt_limit = -(sg_prefetch_cnt - sg_size + 1); |
| 8548 | download_consts[SG_PREFETCH_CNT] = sg_prefetch_cnt; |
| 8549 | download_consts[SG_PREFETCH_CNT_LIMIT] = sg_prefetch_cnt_limit; |
| 8550 | download_consts[SG_PREFETCH_ALIGN_MASK] = ~(sg_prefetch_align - 1); |
| 8551 | download_consts[SG_PREFETCH_ADDR_MASK] = (sg_prefetch_align - 1); |
| 8552 | download_consts[SG_SIZEOF] = sg_size; |
| 8553 | download_consts[PKT_OVERRUN_BUFOFFSET] = |
| 8554 | (ahd->overrun_buf - (uint8_t *)ahd->qoutfifo) / 256; |
| 8555 | download_consts[SCB_TRANSFER_SIZE] = SCB_TRANSFER_SIZE_1BYTE_LUN; |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 8556 | download_consts[CACHELINE_MASK] = cacheline_mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8557 | cur_patch = patches; |
| 8558 | downloaded = 0; |
| 8559 | skip_addr = 0; |
| 8560 | ahd_outb(ahd, SEQCTL0, PERRORDIS|FAILDIS|FASTMODE|LOADRAM); |
Hannes Reinecke | ba62cd2 | 2006-01-12 12:07:02 +0100 | [diff] [blame] | 8561 | ahd_outw(ahd, PRGMCNT, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8562 | |
| 8563 | for (i = 0; i < sizeof(seqprog)/4; i++) { |
| 8564 | if (ahd_check_patch(ahd, &cur_patch, i, &skip_addr) == 0) { |
| 8565 | /* |
| 8566 | * Don't download this instruction as it |
| 8567 | * is in a patch that was removed. |
| 8568 | */ |
| 8569 | continue; |
| 8570 | } |
| 8571 | /* |
| 8572 | * Move through the CS table until we find a CS |
| 8573 | * that might apply to this instruction. |
| 8574 | */ |
| 8575 | for (; cur_cs < num_critical_sections; cur_cs++) { |
| 8576 | if (critical_sections[cur_cs].end <= i) { |
| 8577 | if (begin_set[cs_count] == TRUE |
| 8578 | && end_set[cs_count] == FALSE) { |
| 8579 | cs_table[cs_count].end = downloaded; |
| 8580 | end_set[cs_count] = TRUE; |
| 8581 | cs_count++; |
| 8582 | } |
| 8583 | continue; |
| 8584 | } |
| 8585 | if (critical_sections[cur_cs].begin <= i |
| 8586 | && begin_set[cs_count] == FALSE) { |
| 8587 | cs_table[cs_count].begin = downloaded; |
| 8588 | begin_set[cs_count] = TRUE; |
| 8589 | } |
| 8590 | break; |
| 8591 | } |
| 8592 | ahd_download_instr(ahd, i, download_consts); |
| 8593 | downloaded++; |
| 8594 | } |
| 8595 | |
| 8596 | ahd->num_critical_sections = cs_count; |
| 8597 | if (cs_count != 0) { |
| 8598 | |
| 8599 | cs_count *= sizeof(struct cs); |
| 8600 | ahd->critical_sections = malloc(cs_count, M_DEVBUF, M_NOWAIT); |
| 8601 | if (ahd->critical_sections == NULL) |
| 8602 | panic("ahd_loadseq: Could not malloc"); |
| 8603 | memcpy(ahd->critical_sections, cs_table, cs_count); |
| 8604 | } |
| 8605 | ahd_outb(ahd, SEQCTL0, PERRORDIS|FAILDIS|FASTMODE); |
| 8606 | |
| 8607 | if (bootverbose) { |
| 8608 | printf(" %d instructions downloaded\n", downloaded); |
| 8609 | printf("%s: Features 0x%x, Bugs 0x%x, Flags 0x%x\n", |
| 8610 | ahd_name(ahd), ahd->features, ahd->bugs, ahd->flags); |
| 8611 | } |
| 8612 | } |
| 8613 | |
| 8614 | static int |
| 8615 | ahd_check_patch(struct ahd_softc *ahd, struct patch **start_patch, |
| 8616 | u_int start_instr, u_int *skip_addr) |
| 8617 | { |
| 8618 | struct patch *cur_patch; |
| 8619 | struct patch *last_patch; |
| 8620 | u_int num_patches; |
| 8621 | |
| 8622 | num_patches = sizeof(patches)/sizeof(struct patch); |
| 8623 | last_patch = &patches[num_patches]; |
| 8624 | cur_patch = *start_patch; |
| 8625 | |
| 8626 | while (cur_patch < last_patch && start_instr == cur_patch->begin) { |
| 8627 | |
| 8628 | if (cur_patch->patch_func(ahd) == 0) { |
| 8629 | |
| 8630 | /* Start rejecting code */ |
| 8631 | *skip_addr = start_instr + cur_patch->skip_instr; |
| 8632 | cur_patch += cur_patch->skip_patch; |
| 8633 | } else { |
| 8634 | /* Accepted this patch. Advance to the next |
| 8635 | * one and wait for our intruction pointer to |
| 8636 | * hit this point. |
| 8637 | */ |
| 8638 | cur_patch++; |
| 8639 | } |
| 8640 | } |
| 8641 | |
| 8642 | *start_patch = cur_patch; |
| 8643 | if (start_instr < *skip_addr) |
| 8644 | /* Still skipping */ |
| 8645 | return (0); |
| 8646 | |
| 8647 | return (1); |
| 8648 | } |
| 8649 | |
| 8650 | static u_int |
| 8651 | ahd_resolve_seqaddr(struct ahd_softc *ahd, u_int address) |
| 8652 | { |
| 8653 | struct patch *cur_patch; |
| 8654 | int address_offset; |
| 8655 | u_int skip_addr; |
| 8656 | u_int i; |
| 8657 | |
| 8658 | address_offset = 0; |
| 8659 | cur_patch = patches; |
| 8660 | skip_addr = 0; |
| 8661 | |
| 8662 | for (i = 0; i < address;) { |
| 8663 | |
| 8664 | ahd_check_patch(ahd, &cur_patch, i, &skip_addr); |
| 8665 | |
| 8666 | if (skip_addr > i) { |
| 8667 | int end_addr; |
| 8668 | |
| 8669 | end_addr = MIN(address, skip_addr); |
| 8670 | address_offset += end_addr - i; |
| 8671 | i = skip_addr; |
| 8672 | } else { |
| 8673 | i++; |
| 8674 | } |
| 8675 | } |
| 8676 | return (address - address_offset); |
| 8677 | } |
| 8678 | |
| 8679 | static void |
| 8680 | ahd_download_instr(struct ahd_softc *ahd, u_int instrptr, uint8_t *dconsts) |
| 8681 | { |
| 8682 | union ins_formats instr; |
| 8683 | struct ins_format1 *fmt1_ins; |
| 8684 | struct ins_format3 *fmt3_ins; |
| 8685 | u_int opcode; |
| 8686 | |
| 8687 | /* |
| 8688 | * The firmware is always compiled into a little endian format. |
| 8689 | */ |
| 8690 | instr.integer = ahd_le32toh(*(uint32_t*)&seqprog[instrptr * 4]); |
| 8691 | |
| 8692 | fmt1_ins = &instr.format1; |
| 8693 | fmt3_ins = NULL; |
| 8694 | |
| 8695 | /* Pull the opcode */ |
| 8696 | opcode = instr.format1.opcode; |
| 8697 | switch (opcode) { |
| 8698 | case AIC_OP_JMP: |
| 8699 | case AIC_OP_JC: |
| 8700 | case AIC_OP_JNC: |
| 8701 | case AIC_OP_CALL: |
| 8702 | case AIC_OP_JNE: |
| 8703 | case AIC_OP_JNZ: |
| 8704 | case AIC_OP_JE: |
| 8705 | case AIC_OP_JZ: |
| 8706 | { |
| 8707 | fmt3_ins = &instr.format3; |
| 8708 | fmt3_ins->address = ahd_resolve_seqaddr(ahd, fmt3_ins->address); |
| 8709 | /* FALLTHROUGH */ |
| 8710 | } |
| 8711 | case AIC_OP_OR: |
| 8712 | case AIC_OP_AND: |
| 8713 | case AIC_OP_XOR: |
| 8714 | case AIC_OP_ADD: |
| 8715 | case AIC_OP_ADC: |
| 8716 | case AIC_OP_BMOV: |
| 8717 | if (fmt1_ins->parity != 0) { |
| 8718 | fmt1_ins->immediate = dconsts[fmt1_ins->immediate]; |
| 8719 | } |
| 8720 | fmt1_ins->parity = 0; |
| 8721 | /* FALLTHROUGH */ |
| 8722 | case AIC_OP_ROL: |
| 8723 | { |
| 8724 | int i, count; |
| 8725 | |
| 8726 | /* Calculate odd parity for the instruction */ |
| 8727 | for (i = 0, count = 0; i < 31; i++) { |
| 8728 | uint32_t mask; |
| 8729 | |
| 8730 | mask = 0x01 << i; |
| 8731 | if ((instr.integer & mask) != 0) |
| 8732 | count++; |
| 8733 | } |
| 8734 | if ((count & 0x01) == 0) |
| 8735 | instr.format1.parity = 1; |
| 8736 | |
| 8737 | /* The sequencer is a little endian cpu */ |
| 8738 | instr.integer = ahd_htole32(instr.integer); |
| 8739 | ahd_outsb(ahd, SEQRAM, instr.bytes, 4); |
| 8740 | break; |
| 8741 | } |
| 8742 | default: |
| 8743 | panic("Unknown opcode encountered in seq program"); |
| 8744 | break; |
| 8745 | } |
| 8746 | } |
| 8747 | |
| 8748 | static int |
| 8749 | ahd_probe_stack_size(struct ahd_softc *ahd) |
| 8750 | { |
| 8751 | int last_probe; |
| 8752 | |
| 8753 | last_probe = 0; |
| 8754 | while (1) { |
| 8755 | int i; |
| 8756 | |
| 8757 | /* |
| 8758 | * We avoid using 0 as a pattern to avoid |
| 8759 | * confusion if the stack implementation |
| 8760 | * "back-fills" with zeros when "poping' |
| 8761 | * entries. |
| 8762 | */ |
| 8763 | for (i = 1; i <= last_probe+1; i++) { |
| 8764 | ahd_outb(ahd, STACK, i & 0xFF); |
| 8765 | ahd_outb(ahd, STACK, (i >> 8) & 0xFF); |
| 8766 | } |
| 8767 | |
| 8768 | /* Verify */ |
| 8769 | for (i = last_probe+1; i > 0; i--) { |
| 8770 | u_int stack_entry; |
| 8771 | |
| 8772 | stack_entry = ahd_inb(ahd, STACK) |
| 8773 | |(ahd_inb(ahd, STACK) << 8); |
| 8774 | if (stack_entry != i) |
| 8775 | goto sized; |
| 8776 | } |
| 8777 | last_probe++; |
| 8778 | } |
| 8779 | sized: |
| 8780 | return (last_probe); |
| 8781 | } |
| 8782 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8783 | int |
| 8784 | ahd_print_register(ahd_reg_parse_entry_t *table, u_int num_entries, |
| 8785 | const char *name, u_int address, u_int value, |
| 8786 | u_int *cur_column, u_int wrap_point) |
| 8787 | { |
| 8788 | int printed; |
| 8789 | u_int printed_mask; |
| 8790 | |
| 8791 | if (cur_column != NULL && *cur_column >= wrap_point) { |
| 8792 | printf("\n"); |
| 8793 | *cur_column = 0; |
| 8794 | } |
| 8795 | printed = printf("%s[0x%x]", name, value); |
| 8796 | if (table == NULL) { |
| 8797 | printed += printf(" "); |
| 8798 | *cur_column += printed; |
| 8799 | return (printed); |
| 8800 | } |
| 8801 | printed_mask = 0; |
| 8802 | while (printed_mask != 0xFF) { |
| 8803 | int entry; |
| 8804 | |
| 8805 | for (entry = 0; entry < num_entries; entry++) { |
| 8806 | if (((value & table[entry].mask) |
| 8807 | != table[entry].value) |
| 8808 | || ((printed_mask & table[entry].mask) |
| 8809 | == table[entry].mask)) |
| 8810 | continue; |
| 8811 | |
| 8812 | printed += printf("%s%s", |
| 8813 | printed_mask == 0 ? ":(" : "|", |
| 8814 | table[entry].name); |
| 8815 | printed_mask |= table[entry].mask; |
| 8816 | |
| 8817 | break; |
| 8818 | } |
| 8819 | if (entry >= num_entries) |
| 8820 | break; |
| 8821 | } |
| 8822 | if (printed_mask != 0) |
| 8823 | printed += printf(") "); |
| 8824 | else |
| 8825 | printed += printf(" "); |
| 8826 | if (cur_column != NULL) |
| 8827 | *cur_column += printed; |
| 8828 | return (printed); |
| 8829 | } |
| 8830 | |
| 8831 | void |
| 8832 | ahd_dump_card_state(struct ahd_softc *ahd) |
| 8833 | { |
| 8834 | struct scb *scb; |
| 8835 | ahd_mode_state saved_modes; |
| 8836 | u_int dffstat; |
| 8837 | int paused; |
| 8838 | u_int scb_index; |
| 8839 | u_int saved_scb_index; |
| 8840 | u_int cur_col; |
| 8841 | int i; |
| 8842 | |
| 8843 | if (ahd_is_paused(ahd)) { |
| 8844 | paused = 1; |
| 8845 | } else { |
| 8846 | paused = 0; |
| 8847 | ahd_pause(ahd); |
| 8848 | } |
| 8849 | saved_modes = ahd_save_modes(ahd); |
| 8850 | ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); |
| 8851 | printf(">>>>>>>>>>>>>>>>>> Dump Card State Begins <<<<<<<<<<<<<<<<<\n" |
| 8852 | "%s: Dumping Card State at program address 0x%x Mode 0x%x\n", |
| 8853 | ahd_name(ahd), |
Hannes Reinecke | ba62cd2 | 2006-01-12 12:07:02 +0100 | [diff] [blame] | 8854 | ahd_inw(ahd, CURADDR), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8855 | ahd_build_mode_state(ahd, ahd->saved_src_mode, |
| 8856 | ahd->saved_dst_mode)); |
| 8857 | if (paused) |
| 8858 | printf("Card was paused\n"); |
| 8859 | |
| 8860 | if (ahd_check_cmdcmpltqueues(ahd)) |
| 8861 | printf("Completions are pending\n"); |
| 8862 | |
| 8863 | /* |
| 8864 | * Mode independent registers. |
| 8865 | */ |
| 8866 | cur_col = 0; |
Hannes Reinecke | 53467e6 | 2006-01-24 10:43:26 +0100 | [diff] [blame] | 8867 | ahd_intstat_print(ahd_inb(ahd, INTSTAT), &cur_col, 50); |
| 8868 | ahd_seloid_print(ahd_inb(ahd, SELOID), &cur_col, 50); |
| 8869 | ahd_selid_print(ahd_inb(ahd, SELID), &cur_col, 50); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8870 | ahd_hs_mailbox_print(ahd_inb(ahd, LOCAL_HS_MAILBOX), &cur_col, 50); |
| 8871 | ahd_intctl_print(ahd_inb(ahd, INTCTL), &cur_col, 50); |
| 8872 | ahd_seqintstat_print(ahd_inb(ahd, SEQINTSTAT), &cur_col, 50); |
| 8873 | ahd_saved_mode_print(ahd_inb(ahd, SAVED_MODE), &cur_col, 50); |
| 8874 | ahd_dffstat_print(ahd_inb(ahd, DFFSTAT), &cur_col, 50); |
| 8875 | ahd_scsisigi_print(ahd_inb(ahd, SCSISIGI), &cur_col, 50); |
| 8876 | ahd_scsiphase_print(ahd_inb(ahd, SCSIPHASE), &cur_col, 50); |
| 8877 | ahd_scsibus_print(ahd_inb(ahd, SCSIBUS), &cur_col, 50); |
| 8878 | ahd_lastphase_print(ahd_inb(ahd, LASTPHASE), &cur_col, 50); |
| 8879 | ahd_scsiseq0_print(ahd_inb(ahd, SCSISEQ0), &cur_col, 50); |
| 8880 | ahd_scsiseq1_print(ahd_inb(ahd, SCSISEQ1), &cur_col, 50); |
| 8881 | ahd_seqctl0_print(ahd_inb(ahd, SEQCTL0), &cur_col, 50); |
| 8882 | ahd_seqintctl_print(ahd_inb(ahd, SEQINTCTL), &cur_col, 50); |
| 8883 | ahd_seq_flags_print(ahd_inb(ahd, SEQ_FLAGS), &cur_col, 50); |
| 8884 | ahd_seq_flags2_print(ahd_inb(ahd, SEQ_FLAGS2), &cur_col, 50); |
Hannes Reinecke | 53467e6 | 2006-01-24 10:43:26 +0100 | [diff] [blame] | 8885 | ahd_qfreeze_count_print(ahd_inw(ahd, QFREEZE_COUNT), &cur_col, 50); |
| 8886 | ahd_kernel_qfreeze_count_print(ahd_inw(ahd, KERNEL_QFREEZE_COUNT), |
| 8887 | &cur_col, 50); |
| 8888 | ahd_mk_message_scb_print(ahd_inw(ahd, MK_MESSAGE_SCB), &cur_col, 50); |
| 8889 | ahd_mk_message_scsiid_print(ahd_inb(ahd, MK_MESSAGE_SCSIID), |
| 8890 | &cur_col, 50); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8891 | ahd_sstat0_print(ahd_inb(ahd, SSTAT0), &cur_col, 50); |
| 8892 | ahd_sstat1_print(ahd_inb(ahd, SSTAT1), &cur_col, 50); |
| 8893 | ahd_sstat2_print(ahd_inb(ahd, SSTAT2), &cur_col, 50); |
| 8894 | ahd_sstat3_print(ahd_inb(ahd, SSTAT3), &cur_col, 50); |
| 8895 | ahd_perrdiag_print(ahd_inb(ahd, PERRDIAG), &cur_col, 50); |
| 8896 | ahd_simode1_print(ahd_inb(ahd, SIMODE1), &cur_col, 50); |
| 8897 | ahd_lqistat0_print(ahd_inb(ahd, LQISTAT0), &cur_col, 50); |
| 8898 | ahd_lqistat1_print(ahd_inb(ahd, LQISTAT1), &cur_col, 50); |
| 8899 | ahd_lqistat2_print(ahd_inb(ahd, LQISTAT2), &cur_col, 50); |
| 8900 | ahd_lqostat0_print(ahd_inb(ahd, LQOSTAT0), &cur_col, 50); |
| 8901 | ahd_lqostat1_print(ahd_inb(ahd, LQOSTAT1), &cur_col, 50); |
| 8902 | ahd_lqostat2_print(ahd_inb(ahd, LQOSTAT2), &cur_col, 50); |
| 8903 | printf("\n"); |
| 8904 | printf("\nSCB Count = %d CMDS_PENDING = %d LASTSCB 0x%x " |
| 8905 | "CURRSCB 0x%x NEXTSCB 0x%x\n", |
| 8906 | ahd->scb_data.numscbs, ahd_inw(ahd, CMDS_PENDING), |
| 8907 | ahd_inw(ahd, LASTSCB), ahd_inw(ahd, CURRSCB), |
| 8908 | ahd_inw(ahd, NEXTSCB)); |
| 8909 | cur_col = 0; |
| 8910 | /* QINFIFO */ |
| 8911 | ahd_search_qinfifo(ahd, CAM_TARGET_WILDCARD, ALL_CHANNELS, |
| 8912 | CAM_LUN_WILDCARD, SCB_LIST_NULL, |
| 8913 | ROLE_UNKNOWN, /*status*/0, SEARCH_PRINT); |
| 8914 | saved_scb_index = ahd_get_scbptr(ahd); |
| 8915 | printf("Pending list:"); |
| 8916 | i = 0; |
| 8917 | LIST_FOREACH(scb, &ahd->pending_scbs, pending_links) { |
| 8918 | if (i++ > AHD_SCB_MAX) |
| 8919 | break; |
| 8920 | cur_col = printf("\n%3d FIFO_USE[0x%x] ", SCB_GET_TAG(scb), |
| 8921 | ahd_inb_scbram(ahd, SCB_FIFO_USE_COUNT)); |
| 8922 | ahd_set_scbptr(ahd, SCB_GET_TAG(scb)); |
| 8923 | ahd_scb_control_print(ahd_inb_scbram(ahd, SCB_CONTROL), |
| 8924 | &cur_col, 60); |
| 8925 | ahd_scb_scsiid_print(ahd_inb_scbram(ahd, SCB_SCSIID), |
| 8926 | &cur_col, 60); |
| 8927 | } |
| 8928 | printf("\nTotal %d\n", i); |
| 8929 | |
| 8930 | printf("Kernel Free SCB list: "); |
| 8931 | i = 0; |
| 8932 | TAILQ_FOREACH(scb, &ahd->scb_data.free_scbs, links.tqe) { |
| 8933 | struct scb *list_scb; |
| 8934 | |
| 8935 | list_scb = scb; |
| 8936 | do { |
| 8937 | printf("%d ", SCB_GET_TAG(list_scb)); |
| 8938 | list_scb = LIST_NEXT(list_scb, collision_links); |
| 8939 | } while (list_scb && i++ < AHD_SCB_MAX); |
| 8940 | } |
| 8941 | |
| 8942 | LIST_FOREACH(scb, &ahd->scb_data.any_dev_free_scb_list, links.le) { |
| 8943 | if (i++ > AHD_SCB_MAX) |
| 8944 | break; |
| 8945 | printf("%d ", SCB_GET_TAG(scb)); |
| 8946 | } |
| 8947 | printf("\n"); |
| 8948 | |
| 8949 | printf("Sequencer Complete DMA-inprog list: "); |
| 8950 | scb_index = ahd_inw(ahd, COMPLETE_SCB_DMAINPROG_HEAD); |
| 8951 | i = 0; |
| 8952 | while (!SCBID_IS_NULL(scb_index) && i++ < AHD_SCB_MAX) { |
| 8953 | ahd_set_scbptr(ahd, scb_index); |
| 8954 | printf("%d ", scb_index); |
| 8955 | scb_index = ahd_inw_scbram(ahd, SCB_NEXT_COMPLETE); |
| 8956 | } |
| 8957 | printf("\n"); |
| 8958 | |
| 8959 | printf("Sequencer Complete list: "); |
| 8960 | scb_index = ahd_inw(ahd, COMPLETE_SCB_HEAD); |
| 8961 | i = 0; |
| 8962 | while (!SCBID_IS_NULL(scb_index) && i++ < AHD_SCB_MAX) { |
| 8963 | ahd_set_scbptr(ahd, scb_index); |
| 8964 | printf("%d ", scb_index); |
| 8965 | scb_index = ahd_inw_scbram(ahd, SCB_NEXT_COMPLETE); |
| 8966 | } |
| 8967 | printf("\n"); |
| 8968 | |
| 8969 | |
| 8970 | printf("Sequencer DMA-Up and Complete list: "); |
| 8971 | scb_index = ahd_inw(ahd, COMPLETE_DMA_SCB_HEAD); |
| 8972 | i = 0; |
| 8973 | while (!SCBID_IS_NULL(scb_index) && i++ < AHD_SCB_MAX) { |
| 8974 | ahd_set_scbptr(ahd, scb_index); |
| 8975 | printf("%d ", scb_index); |
| 8976 | scb_index = ahd_inw_scbram(ahd, SCB_NEXT_COMPLETE); |
| 8977 | } |
| 8978 | printf("\n"); |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 8979 | printf("Sequencer On QFreeze and Complete list: "); |
| 8980 | scb_index = ahd_inw(ahd, COMPLETE_ON_QFREEZE_HEAD); |
| 8981 | i = 0; |
| 8982 | while (!SCBID_IS_NULL(scb_index) && i++ < AHD_SCB_MAX) { |
| 8983 | ahd_set_scbptr(ahd, scb_index); |
| 8984 | printf("%d ", scb_index); |
| 8985 | scb_index = ahd_inw_scbram(ahd, SCB_NEXT_COMPLETE); |
| 8986 | } |
| 8987 | printf("\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8988 | ahd_set_scbptr(ahd, saved_scb_index); |
| 8989 | dffstat = ahd_inb(ahd, DFFSTAT); |
| 8990 | for (i = 0; i < 2; i++) { |
| 8991 | #ifdef AHD_DEBUG |
| 8992 | struct scb *fifo_scb; |
| 8993 | #endif |
| 8994 | u_int fifo_scbptr; |
| 8995 | |
| 8996 | ahd_set_modes(ahd, AHD_MODE_DFF0 + i, AHD_MODE_DFF0 + i); |
| 8997 | fifo_scbptr = ahd_get_scbptr(ahd); |
Hannes Reinecke | 53467e6 | 2006-01-24 10:43:26 +0100 | [diff] [blame] | 8998 | printf("\n\n%s: FIFO%d %s, LONGJMP == 0x%x, SCB 0x%x\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8999 | ahd_name(ahd), i, |
| 9000 | (dffstat & (FIFO0FREE << i)) ? "Free" : "Active", |
| 9001 | ahd_inw(ahd, LONGJMP_ADDR), fifo_scbptr); |
| 9002 | cur_col = 0; |
| 9003 | ahd_seqimode_print(ahd_inb(ahd, SEQIMODE), &cur_col, 50); |
| 9004 | ahd_seqintsrc_print(ahd_inb(ahd, SEQINTSRC), &cur_col, 50); |
| 9005 | ahd_dfcntrl_print(ahd_inb(ahd, DFCNTRL), &cur_col, 50); |
| 9006 | ahd_dfstatus_print(ahd_inb(ahd, DFSTATUS), &cur_col, 50); |
| 9007 | ahd_sg_cache_shadow_print(ahd_inb(ahd, SG_CACHE_SHADOW), |
| 9008 | &cur_col, 50); |
| 9009 | ahd_sg_state_print(ahd_inb(ahd, SG_STATE), &cur_col, 50); |
| 9010 | ahd_dffsxfrctl_print(ahd_inb(ahd, DFFSXFRCTL), &cur_col, 50); |
| 9011 | ahd_soffcnt_print(ahd_inb(ahd, SOFFCNT), &cur_col, 50); |
| 9012 | ahd_mdffstat_print(ahd_inb(ahd, MDFFSTAT), &cur_col, 50); |
| 9013 | if (cur_col > 50) { |
| 9014 | printf("\n"); |
| 9015 | cur_col = 0; |
| 9016 | } |
| 9017 | cur_col += printf("SHADDR = 0x%x%x, SHCNT = 0x%x ", |
| 9018 | ahd_inl(ahd, SHADDR+4), |
| 9019 | ahd_inl(ahd, SHADDR), |
| 9020 | (ahd_inb(ahd, SHCNT) |
| 9021 | | (ahd_inb(ahd, SHCNT + 1) << 8) |
| 9022 | | (ahd_inb(ahd, SHCNT + 2) << 16))); |
| 9023 | if (cur_col > 50) { |
| 9024 | printf("\n"); |
| 9025 | cur_col = 0; |
| 9026 | } |
| 9027 | cur_col += printf("HADDR = 0x%x%x, HCNT = 0x%x ", |
| 9028 | ahd_inl(ahd, HADDR+4), |
| 9029 | ahd_inl(ahd, HADDR), |
| 9030 | (ahd_inb(ahd, HCNT) |
| 9031 | | (ahd_inb(ahd, HCNT + 1) << 8) |
| 9032 | | (ahd_inb(ahd, HCNT + 2) << 16))); |
| 9033 | ahd_ccsgctl_print(ahd_inb(ahd, CCSGCTL), &cur_col, 50); |
| 9034 | #ifdef AHD_DEBUG |
| 9035 | if ((ahd_debug & AHD_SHOW_SG) != 0) { |
| 9036 | fifo_scb = ahd_lookup_scb(ahd, fifo_scbptr); |
| 9037 | if (fifo_scb != NULL) |
| 9038 | ahd_dump_sglist(fifo_scb); |
| 9039 | } |
| 9040 | #endif |
| 9041 | } |
| 9042 | printf("\nLQIN: "); |
| 9043 | for (i = 0; i < 20; i++) |
| 9044 | printf("0x%x ", ahd_inb(ahd, LQIN + i)); |
| 9045 | printf("\n"); |
| 9046 | ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG); |
| 9047 | printf("%s: LQISTATE = 0x%x, LQOSTATE = 0x%x, OPTIONMODE = 0x%x\n", |
| 9048 | ahd_name(ahd), ahd_inb(ahd, LQISTATE), ahd_inb(ahd, LQOSTATE), |
| 9049 | ahd_inb(ahd, OPTIONMODE)); |
| 9050 | printf("%s: OS_SPACE_CNT = 0x%x MAXCMDCNT = 0x%x\n", |
| 9051 | ahd_name(ahd), ahd_inb(ahd, OS_SPACE_CNT), |
| 9052 | ahd_inb(ahd, MAXCMDCNT)); |
Hannes Reinecke | 53467e6 | 2006-01-24 10:43:26 +0100 | [diff] [blame] | 9053 | printf("%s: SAVED_SCSIID = 0x%x SAVED_LUN = 0x%x\n", |
| 9054 | ahd_name(ahd), ahd_inb(ahd, SAVED_SCSIID), |
| 9055 | ahd_inb(ahd, SAVED_LUN)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9056 | ahd_simode0_print(ahd_inb(ahd, SIMODE0), &cur_col, 50); |
| 9057 | printf("\n"); |
| 9058 | ahd_set_modes(ahd, AHD_MODE_CCHAN, AHD_MODE_CCHAN); |
| 9059 | cur_col = 0; |
| 9060 | ahd_ccscbctl_print(ahd_inb(ahd, CCSCBCTL), &cur_col, 50); |
| 9061 | printf("\n"); |
| 9062 | ahd_set_modes(ahd, ahd->saved_src_mode, ahd->saved_dst_mode); |
| 9063 | printf("%s: REG0 == 0x%x, SINDEX = 0x%x, DINDEX = 0x%x\n", |
| 9064 | ahd_name(ahd), ahd_inw(ahd, REG0), ahd_inw(ahd, SINDEX), |
| 9065 | ahd_inw(ahd, DINDEX)); |
| 9066 | printf("%s: SCBPTR == 0x%x, SCB_NEXT == 0x%x, SCB_NEXT2 == 0x%x\n", |
| 9067 | ahd_name(ahd), ahd_get_scbptr(ahd), |
| 9068 | ahd_inw_scbram(ahd, SCB_NEXT), |
| 9069 | ahd_inw_scbram(ahd, SCB_NEXT2)); |
| 9070 | printf("CDB %x %x %x %x %x %x\n", |
| 9071 | ahd_inb_scbram(ahd, SCB_CDB_STORE), |
| 9072 | ahd_inb_scbram(ahd, SCB_CDB_STORE+1), |
| 9073 | ahd_inb_scbram(ahd, SCB_CDB_STORE+2), |
| 9074 | ahd_inb_scbram(ahd, SCB_CDB_STORE+3), |
| 9075 | ahd_inb_scbram(ahd, SCB_CDB_STORE+4), |
| 9076 | ahd_inb_scbram(ahd, SCB_CDB_STORE+5)); |
| 9077 | printf("STACK:"); |
| 9078 | for (i = 0; i < ahd->stack_size; i++) { |
| 9079 | ahd->saved_stack[i] = |
| 9080 | ahd_inb(ahd, STACK)|(ahd_inb(ahd, STACK) << 8); |
| 9081 | printf(" 0x%x", ahd->saved_stack[i]); |
| 9082 | } |
| 9083 | for (i = ahd->stack_size-1; i >= 0; i--) { |
| 9084 | ahd_outb(ahd, STACK, ahd->saved_stack[i] & 0xFF); |
| 9085 | ahd_outb(ahd, STACK, (ahd->saved_stack[i] >> 8) & 0xFF); |
| 9086 | } |
| 9087 | printf("\n<<<<<<<<<<<<<<<<< Dump Card State Ends >>>>>>>>>>>>>>>>>>\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9088 | ahd_restore_modes(ahd, saved_modes); |
| 9089 | if (paused == 0) |
| 9090 | ahd_unpause(ahd); |
| 9091 | } |
| 9092 | |
| 9093 | void |
| 9094 | ahd_dump_scbs(struct ahd_softc *ahd) |
| 9095 | { |
| 9096 | ahd_mode_state saved_modes; |
| 9097 | u_int saved_scb_index; |
| 9098 | int i; |
| 9099 | |
| 9100 | saved_modes = ahd_save_modes(ahd); |
| 9101 | ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); |
| 9102 | saved_scb_index = ahd_get_scbptr(ahd); |
| 9103 | for (i = 0; i < AHD_SCB_MAX; i++) { |
| 9104 | ahd_set_scbptr(ahd, i); |
| 9105 | printf("%3d", i); |
| 9106 | printf("(CTRL 0x%x ID 0x%x N 0x%x N2 0x%x SG 0x%x, RSG 0x%x)\n", |
| 9107 | ahd_inb_scbram(ahd, SCB_CONTROL), |
| 9108 | ahd_inb_scbram(ahd, SCB_SCSIID), |
| 9109 | ahd_inw_scbram(ahd, SCB_NEXT), |
| 9110 | ahd_inw_scbram(ahd, SCB_NEXT2), |
| 9111 | ahd_inl_scbram(ahd, SCB_SGPTR), |
| 9112 | ahd_inl_scbram(ahd, SCB_RESIDUAL_SGPTR)); |
| 9113 | } |
| 9114 | printf("\n"); |
| 9115 | ahd_set_scbptr(ahd, saved_scb_index); |
| 9116 | ahd_restore_modes(ahd, saved_modes); |
| 9117 | } |
| 9118 | |
| 9119 | /**************************** Flexport Logic **********************************/ |
| 9120 | /* |
| 9121 | * Read count 16bit words from 16bit word address start_addr from the |
| 9122 | * SEEPROM attached to the controller, into buf, using the controller's |
| 9123 | * SEEPROM reading state machine. Optionally treat the data as a byte |
| 9124 | * stream in terms of byte order. |
| 9125 | */ |
| 9126 | int |
| 9127 | ahd_read_seeprom(struct ahd_softc *ahd, uint16_t *buf, |
| 9128 | u_int start_addr, u_int count, int bytestream) |
| 9129 | { |
| 9130 | u_int cur_addr; |
| 9131 | u_int end_addr; |
| 9132 | int error; |
| 9133 | |
| 9134 | /* |
| 9135 | * If we never make it through the loop even once, |
| 9136 | * we were passed invalid arguments. |
| 9137 | */ |
| 9138 | error = EINVAL; |
| 9139 | AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); |
| 9140 | end_addr = start_addr + count; |
| 9141 | for (cur_addr = start_addr; cur_addr < end_addr; cur_addr++) { |
| 9142 | |
| 9143 | ahd_outb(ahd, SEEADR, cur_addr); |
| 9144 | ahd_outb(ahd, SEECTL, SEEOP_READ | SEESTART); |
| 9145 | |
| 9146 | error = ahd_wait_seeprom(ahd); |
| 9147 | if (error) |
| 9148 | break; |
| 9149 | if (bytestream != 0) { |
| 9150 | uint8_t *bytestream_ptr; |
| 9151 | |
| 9152 | bytestream_ptr = (uint8_t *)buf; |
| 9153 | *bytestream_ptr++ = ahd_inb(ahd, SEEDAT); |
| 9154 | *bytestream_ptr = ahd_inb(ahd, SEEDAT+1); |
| 9155 | } else { |
| 9156 | /* |
| 9157 | * ahd_inw() already handles machine byte order. |
| 9158 | */ |
| 9159 | *buf = ahd_inw(ahd, SEEDAT); |
| 9160 | } |
| 9161 | buf++; |
| 9162 | } |
| 9163 | return (error); |
| 9164 | } |
| 9165 | |
| 9166 | /* |
| 9167 | * Write count 16bit words from buf, into SEEPROM attache to the |
| 9168 | * controller starting at 16bit word address start_addr, using the |
| 9169 | * controller's SEEPROM writing state machine. |
| 9170 | */ |
| 9171 | int |
| 9172 | ahd_write_seeprom(struct ahd_softc *ahd, uint16_t *buf, |
| 9173 | u_int start_addr, u_int count) |
| 9174 | { |
| 9175 | u_int cur_addr; |
| 9176 | u_int end_addr; |
| 9177 | int error; |
| 9178 | int retval; |
| 9179 | |
| 9180 | AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); |
| 9181 | error = ENOENT; |
| 9182 | |
| 9183 | /* Place the chip into write-enable mode */ |
| 9184 | ahd_outb(ahd, SEEADR, SEEOP_EWEN_ADDR); |
| 9185 | ahd_outb(ahd, SEECTL, SEEOP_EWEN | SEESTART); |
| 9186 | error = ahd_wait_seeprom(ahd); |
| 9187 | if (error) |
| 9188 | return (error); |
| 9189 | |
| 9190 | /* |
| 9191 | * Write the data. If we don't get throught the loop at |
| 9192 | * least once, the arguments were invalid. |
| 9193 | */ |
| 9194 | retval = EINVAL; |
| 9195 | end_addr = start_addr + count; |
| 9196 | for (cur_addr = start_addr; cur_addr < end_addr; cur_addr++) { |
| 9197 | ahd_outw(ahd, SEEDAT, *buf++); |
| 9198 | ahd_outb(ahd, SEEADR, cur_addr); |
| 9199 | ahd_outb(ahd, SEECTL, SEEOP_WRITE | SEESTART); |
| 9200 | |
| 9201 | retval = ahd_wait_seeprom(ahd); |
| 9202 | if (retval) |
| 9203 | break; |
| 9204 | } |
| 9205 | |
| 9206 | /* |
| 9207 | * Disable writes. |
| 9208 | */ |
| 9209 | ahd_outb(ahd, SEEADR, SEEOP_EWDS_ADDR); |
| 9210 | ahd_outb(ahd, SEECTL, SEEOP_EWDS | SEESTART); |
| 9211 | error = ahd_wait_seeprom(ahd); |
| 9212 | if (error) |
| 9213 | return (error); |
| 9214 | return (retval); |
| 9215 | } |
| 9216 | |
| 9217 | /* |
| 9218 | * Wait ~100us for the serial eeprom to satisfy our request. |
| 9219 | */ |
| 9220 | int |
| 9221 | ahd_wait_seeprom(struct ahd_softc *ahd) |
| 9222 | { |
| 9223 | int cnt; |
| 9224 | |
Hannes Reinecke | 11668bb | 2006-01-12 12:08:06 +0100 | [diff] [blame] | 9225 | cnt = 5000; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9226 | while ((ahd_inb(ahd, SEESTAT) & (SEEARBACK|SEEBUSY)) != 0 && --cnt) |
| 9227 | ahd_delay(5); |
| 9228 | |
| 9229 | if (cnt == 0) |
| 9230 | return (ETIMEDOUT); |
| 9231 | return (0); |
| 9232 | } |
| 9233 | |
| 9234 | /* |
| 9235 | * Validate the two checksums in the per_channel |
| 9236 | * vital product data struct. |
| 9237 | */ |
| 9238 | int |
| 9239 | ahd_verify_vpd_cksum(struct vpd_config *vpd) |
| 9240 | { |
| 9241 | int i; |
| 9242 | int maxaddr; |
| 9243 | uint32_t checksum; |
| 9244 | uint8_t *vpdarray; |
| 9245 | |
| 9246 | vpdarray = (uint8_t *)vpd; |
| 9247 | maxaddr = offsetof(struct vpd_config, vpd_checksum); |
| 9248 | checksum = 0; |
| 9249 | for (i = offsetof(struct vpd_config, resource_type); i < maxaddr; i++) |
| 9250 | checksum = checksum + vpdarray[i]; |
| 9251 | if (checksum == 0 |
| 9252 | || (-checksum & 0xFF) != vpd->vpd_checksum) |
| 9253 | return (0); |
| 9254 | |
| 9255 | checksum = 0; |
| 9256 | maxaddr = offsetof(struct vpd_config, checksum); |
| 9257 | for (i = offsetof(struct vpd_config, default_target_flags); |
| 9258 | i < maxaddr; i++) |
| 9259 | checksum = checksum + vpdarray[i]; |
| 9260 | if (checksum == 0 |
| 9261 | || (-checksum & 0xFF) != vpd->checksum) |
| 9262 | return (0); |
| 9263 | return (1); |
| 9264 | } |
| 9265 | |
| 9266 | int |
| 9267 | ahd_verify_cksum(struct seeprom_config *sc) |
| 9268 | { |
| 9269 | int i; |
| 9270 | int maxaddr; |
| 9271 | uint32_t checksum; |
| 9272 | uint16_t *scarray; |
| 9273 | |
| 9274 | maxaddr = (sizeof(*sc)/2) - 1; |
| 9275 | checksum = 0; |
| 9276 | scarray = (uint16_t *)sc; |
| 9277 | |
| 9278 | for (i = 0; i < maxaddr; i++) |
| 9279 | checksum = checksum + scarray[i]; |
| 9280 | if (checksum == 0 |
| 9281 | || (checksum & 0xFFFF) != sc->checksum) { |
| 9282 | return (0); |
| 9283 | } else { |
| 9284 | return (1); |
| 9285 | } |
| 9286 | } |
| 9287 | |
| 9288 | int |
| 9289 | ahd_acquire_seeprom(struct ahd_softc *ahd) |
| 9290 | { |
| 9291 | /* |
| 9292 | * We should be able to determine the SEEPROM type |
| 9293 | * from the flexport logic, but unfortunately not |
| 9294 | * all implementations have this logic and there is |
| 9295 | * no programatic method for determining if the logic |
| 9296 | * is present. |
| 9297 | */ |
| 9298 | return (1); |
| 9299 | #if 0 |
| 9300 | uint8_t seetype; |
| 9301 | int error; |
| 9302 | |
| 9303 | error = ahd_read_flexport(ahd, FLXADDR_ROMSTAT_CURSENSECTL, &seetype); |
| 9304 | if (error != 0 |
| 9305 | || ((seetype & FLX_ROMSTAT_SEECFG) == FLX_ROMSTAT_SEE_NONE)) |
| 9306 | return (0); |
| 9307 | return (1); |
| 9308 | #endif |
| 9309 | } |
| 9310 | |
| 9311 | void |
| 9312 | ahd_release_seeprom(struct ahd_softc *ahd) |
| 9313 | { |
| 9314 | /* Currently a no-op */ |
| 9315 | } |
| 9316 | |
| 9317 | int |
| 9318 | ahd_write_flexport(struct ahd_softc *ahd, u_int addr, u_int value) |
| 9319 | { |
| 9320 | int error; |
| 9321 | |
| 9322 | AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); |
| 9323 | if (addr > 7) |
| 9324 | panic("ahd_write_flexport: address out of range"); |
| 9325 | ahd_outb(ahd, BRDCTL, BRDEN|(addr << 3)); |
| 9326 | error = ahd_wait_flexport(ahd); |
| 9327 | if (error != 0) |
| 9328 | return (error); |
| 9329 | ahd_outb(ahd, BRDDAT, value); |
| 9330 | ahd_flush_device_writes(ahd); |
| 9331 | ahd_outb(ahd, BRDCTL, BRDSTB|BRDEN|(addr << 3)); |
| 9332 | ahd_flush_device_writes(ahd); |
| 9333 | ahd_outb(ahd, BRDCTL, BRDEN|(addr << 3)); |
| 9334 | ahd_flush_device_writes(ahd); |
| 9335 | ahd_outb(ahd, BRDCTL, 0); |
| 9336 | ahd_flush_device_writes(ahd); |
| 9337 | return (0); |
| 9338 | } |
| 9339 | |
| 9340 | int |
| 9341 | ahd_read_flexport(struct ahd_softc *ahd, u_int addr, uint8_t *value) |
| 9342 | { |
| 9343 | int error; |
| 9344 | |
| 9345 | AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); |
| 9346 | if (addr > 7) |
| 9347 | panic("ahd_read_flexport: address out of range"); |
| 9348 | ahd_outb(ahd, BRDCTL, BRDRW|BRDEN|(addr << 3)); |
| 9349 | error = ahd_wait_flexport(ahd); |
| 9350 | if (error != 0) |
| 9351 | return (error); |
| 9352 | *value = ahd_inb(ahd, BRDDAT); |
| 9353 | ahd_outb(ahd, BRDCTL, 0); |
| 9354 | ahd_flush_device_writes(ahd); |
| 9355 | return (0); |
| 9356 | } |
| 9357 | |
| 9358 | /* |
| 9359 | * Wait at most 2 seconds for flexport arbitration to succeed. |
| 9360 | */ |
| 9361 | int |
| 9362 | ahd_wait_flexport(struct ahd_softc *ahd) |
| 9363 | { |
| 9364 | int cnt; |
| 9365 | |
| 9366 | AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); |
| 9367 | cnt = 1000000 * 2 / 5; |
| 9368 | while ((ahd_inb(ahd, BRDCTL) & FLXARBACK) == 0 && --cnt) |
| 9369 | ahd_delay(5); |
| 9370 | |
| 9371 | if (cnt == 0) |
| 9372 | return (ETIMEDOUT); |
| 9373 | return (0); |
| 9374 | } |
| 9375 | |
| 9376 | /************************* Target Mode ****************************************/ |
| 9377 | #ifdef AHD_TARGET_MODE |
| 9378 | cam_status |
| 9379 | ahd_find_tmode_devs(struct ahd_softc *ahd, struct cam_sim *sim, union ccb *ccb, |
| 9380 | struct ahd_tmode_tstate **tstate, |
| 9381 | struct ahd_tmode_lstate **lstate, |
| 9382 | int notfound_failure) |
| 9383 | { |
| 9384 | |
| 9385 | if ((ahd->features & AHD_TARGETMODE) == 0) |
| 9386 | return (CAM_REQ_INVALID); |
| 9387 | |
| 9388 | /* |
| 9389 | * Handle the 'black hole' device that sucks up |
| 9390 | * requests to unattached luns on enabled targets. |
| 9391 | */ |
| 9392 | if (ccb->ccb_h.target_id == CAM_TARGET_WILDCARD |
| 9393 | && ccb->ccb_h.target_lun == CAM_LUN_WILDCARD) { |
| 9394 | *tstate = NULL; |
| 9395 | *lstate = ahd->black_hole; |
| 9396 | } else { |
| 9397 | u_int max_id; |
| 9398 | |
| 9399 | max_id = (ahd->features & AHD_WIDE) ? 15 : 7; |
| 9400 | if (ccb->ccb_h.target_id > max_id) |
| 9401 | return (CAM_TID_INVALID); |
| 9402 | |
| 9403 | if (ccb->ccb_h.target_lun >= AHD_NUM_LUNS) |
| 9404 | return (CAM_LUN_INVALID); |
| 9405 | |
| 9406 | *tstate = ahd->enabled_targets[ccb->ccb_h.target_id]; |
| 9407 | *lstate = NULL; |
| 9408 | if (*tstate != NULL) |
| 9409 | *lstate = |
| 9410 | (*tstate)->enabled_luns[ccb->ccb_h.target_lun]; |
| 9411 | } |
| 9412 | |
| 9413 | if (notfound_failure != 0 && *lstate == NULL) |
| 9414 | return (CAM_PATH_INVALID); |
| 9415 | |
| 9416 | return (CAM_REQ_CMP); |
| 9417 | } |
| 9418 | |
| 9419 | void |
| 9420 | ahd_handle_en_lun(struct ahd_softc *ahd, struct cam_sim *sim, union ccb *ccb) |
| 9421 | { |
| 9422 | #if NOT_YET |
| 9423 | struct ahd_tmode_tstate *tstate; |
| 9424 | struct ahd_tmode_lstate *lstate; |
| 9425 | struct ccb_en_lun *cel; |
| 9426 | cam_status status; |
| 9427 | u_int target; |
| 9428 | u_int lun; |
| 9429 | u_int target_mask; |
| 9430 | u_long s; |
| 9431 | char channel; |
| 9432 | |
| 9433 | status = ahd_find_tmode_devs(ahd, sim, ccb, &tstate, &lstate, |
| 9434 | /*notfound_failure*/FALSE); |
| 9435 | |
| 9436 | if (status != CAM_REQ_CMP) { |
| 9437 | ccb->ccb_h.status = status; |
| 9438 | return; |
| 9439 | } |
| 9440 | |
| 9441 | if ((ahd->features & AHD_MULTIROLE) != 0) { |
| 9442 | u_int our_id; |
| 9443 | |
| 9444 | our_id = ahd->our_id; |
| 9445 | if (ccb->ccb_h.target_id != our_id) { |
| 9446 | if ((ahd->features & AHD_MULTI_TID) != 0 |
| 9447 | && (ahd->flags & AHD_INITIATORROLE) != 0) { |
| 9448 | /* |
| 9449 | * Only allow additional targets if |
| 9450 | * the initiator role is disabled. |
| 9451 | * The hardware cannot handle a re-select-in |
| 9452 | * on the initiator id during a re-select-out |
| 9453 | * on a different target id. |
| 9454 | */ |
| 9455 | status = CAM_TID_INVALID; |
| 9456 | } else if ((ahd->flags & AHD_INITIATORROLE) != 0 |
| 9457 | || ahd->enabled_luns > 0) { |
| 9458 | /* |
| 9459 | * Only allow our target id to change |
| 9460 | * if the initiator role is not configured |
| 9461 | * and there are no enabled luns which |
| 9462 | * are attached to the currently registered |
| 9463 | * scsi id. |
| 9464 | */ |
| 9465 | status = CAM_TID_INVALID; |
| 9466 | } |
| 9467 | } |
| 9468 | } |
| 9469 | |
| 9470 | if (status != CAM_REQ_CMP) { |
| 9471 | ccb->ccb_h.status = status; |
| 9472 | return; |
| 9473 | } |
| 9474 | |
| 9475 | /* |
| 9476 | * We now have an id that is valid. |
| 9477 | * If we aren't in target mode, switch modes. |
| 9478 | */ |
| 9479 | if ((ahd->flags & AHD_TARGETROLE) == 0 |
| 9480 | && ccb->ccb_h.target_id != CAM_TARGET_WILDCARD) { |
| 9481 | u_long s; |
| 9482 | |
| 9483 | printf("Configuring Target Mode\n"); |
| 9484 | ahd_lock(ahd, &s); |
| 9485 | if (LIST_FIRST(&ahd->pending_scbs) != NULL) { |
| 9486 | ccb->ccb_h.status = CAM_BUSY; |
| 9487 | ahd_unlock(ahd, &s); |
| 9488 | return; |
| 9489 | } |
| 9490 | ahd->flags |= AHD_TARGETROLE; |
| 9491 | if ((ahd->features & AHD_MULTIROLE) == 0) |
| 9492 | ahd->flags &= ~AHD_INITIATORROLE; |
| 9493 | ahd_pause(ahd); |
| 9494 | ahd_loadseq(ahd); |
| 9495 | ahd_restart(ahd); |
| 9496 | ahd_unlock(ahd, &s); |
| 9497 | } |
| 9498 | cel = &ccb->cel; |
| 9499 | target = ccb->ccb_h.target_id; |
| 9500 | lun = ccb->ccb_h.target_lun; |
| 9501 | channel = SIM_CHANNEL(ahd, sim); |
| 9502 | target_mask = 0x01 << target; |
| 9503 | if (channel == 'B') |
| 9504 | target_mask <<= 8; |
| 9505 | |
| 9506 | if (cel->enable != 0) { |
| 9507 | u_int scsiseq1; |
| 9508 | |
| 9509 | /* Are we already enabled?? */ |
| 9510 | if (lstate != NULL) { |
| 9511 | xpt_print_path(ccb->ccb_h.path); |
| 9512 | printf("Lun already enabled\n"); |
| 9513 | ccb->ccb_h.status = CAM_LUN_ALRDY_ENA; |
| 9514 | return; |
| 9515 | } |
| 9516 | |
| 9517 | if (cel->grp6_len != 0 |
| 9518 | || cel->grp7_len != 0) { |
| 9519 | /* |
| 9520 | * Don't (yet?) support vendor |
| 9521 | * specific commands. |
| 9522 | */ |
| 9523 | ccb->ccb_h.status = CAM_REQ_INVALID; |
| 9524 | printf("Non-zero Group Codes\n"); |
| 9525 | return; |
| 9526 | } |
| 9527 | |
| 9528 | /* |
| 9529 | * Seems to be okay. |
| 9530 | * Setup our data structures. |
| 9531 | */ |
| 9532 | if (target != CAM_TARGET_WILDCARD && tstate == NULL) { |
| 9533 | tstate = ahd_alloc_tstate(ahd, target, channel); |
| 9534 | if (tstate == NULL) { |
| 9535 | xpt_print_path(ccb->ccb_h.path); |
| 9536 | printf("Couldn't allocate tstate\n"); |
| 9537 | ccb->ccb_h.status = CAM_RESRC_UNAVAIL; |
| 9538 | return; |
| 9539 | } |
| 9540 | } |
| 9541 | lstate = malloc(sizeof(*lstate), M_DEVBUF, M_NOWAIT); |
| 9542 | if (lstate == NULL) { |
| 9543 | xpt_print_path(ccb->ccb_h.path); |
| 9544 | printf("Couldn't allocate lstate\n"); |
| 9545 | ccb->ccb_h.status = CAM_RESRC_UNAVAIL; |
| 9546 | return; |
| 9547 | } |
| 9548 | memset(lstate, 0, sizeof(*lstate)); |
| 9549 | status = xpt_create_path(&lstate->path, /*periph*/NULL, |
| 9550 | xpt_path_path_id(ccb->ccb_h.path), |
| 9551 | xpt_path_target_id(ccb->ccb_h.path), |
| 9552 | xpt_path_lun_id(ccb->ccb_h.path)); |
| 9553 | if (status != CAM_REQ_CMP) { |
| 9554 | free(lstate, M_DEVBUF); |
| 9555 | xpt_print_path(ccb->ccb_h.path); |
| 9556 | printf("Couldn't allocate path\n"); |
| 9557 | ccb->ccb_h.status = CAM_RESRC_UNAVAIL; |
| 9558 | return; |
| 9559 | } |
| 9560 | SLIST_INIT(&lstate->accept_tios); |
| 9561 | SLIST_INIT(&lstate->immed_notifies); |
| 9562 | ahd_lock(ahd, &s); |
| 9563 | ahd_pause(ahd); |
| 9564 | if (target != CAM_TARGET_WILDCARD) { |
| 9565 | tstate->enabled_luns[lun] = lstate; |
| 9566 | ahd->enabled_luns++; |
| 9567 | |
| 9568 | if ((ahd->features & AHD_MULTI_TID) != 0) { |
| 9569 | u_int targid_mask; |
| 9570 | |
Hannes Reinecke | ba62cd2 | 2006-01-12 12:07:02 +0100 | [diff] [blame] | 9571 | targid_mask = ahd_inw(ahd, TARGID); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9572 | targid_mask |= target_mask; |
Hannes Reinecke | ba62cd2 | 2006-01-12 12:07:02 +0100 | [diff] [blame] | 9573 | ahd_outw(ahd, TARGID, targid_mask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9574 | ahd_update_scsiid(ahd, targid_mask); |
| 9575 | } else { |
| 9576 | u_int our_id; |
| 9577 | char channel; |
| 9578 | |
| 9579 | channel = SIM_CHANNEL(ahd, sim); |
| 9580 | our_id = SIM_SCSI_ID(ahd, sim); |
| 9581 | |
| 9582 | /* |
| 9583 | * This can only happen if selections |
| 9584 | * are not enabled |
| 9585 | */ |
| 9586 | if (target != our_id) { |
| 9587 | u_int sblkctl; |
| 9588 | char cur_channel; |
| 9589 | int swap; |
| 9590 | |
| 9591 | sblkctl = ahd_inb(ahd, SBLKCTL); |
| 9592 | cur_channel = (sblkctl & SELBUSB) |
| 9593 | ? 'B' : 'A'; |
| 9594 | if ((ahd->features & AHD_TWIN) == 0) |
| 9595 | cur_channel = 'A'; |
| 9596 | swap = cur_channel != channel; |
| 9597 | ahd->our_id = target; |
| 9598 | |
| 9599 | if (swap) |
| 9600 | ahd_outb(ahd, SBLKCTL, |
| 9601 | sblkctl ^ SELBUSB); |
| 9602 | |
| 9603 | ahd_outb(ahd, SCSIID, target); |
| 9604 | |
| 9605 | if (swap) |
| 9606 | ahd_outb(ahd, SBLKCTL, sblkctl); |
| 9607 | } |
| 9608 | } |
| 9609 | } else |
| 9610 | ahd->black_hole = lstate; |
| 9611 | /* Allow select-in operations */ |
| 9612 | if (ahd->black_hole != NULL && ahd->enabled_luns > 0) { |
| 9613 | scsiseq1 = ahd_inb(ahd, SCSISEQ_TEMPLATE); |
| 9614 | scsiseq1 |= ENSELI; |
| 9615 | ahd_outb(ahd, SCSISEQ_TEMPLATE, scsiseq1); |
| 9616 | scsiseq1 = ahd_inb(ahd, SCSISEQ1); |
| 9617 | scsiseq1 |= ENSELI; |
| 9618 | ahd_outb(ahd, SCSISEQ1, scsiseq1); |
| 9619 | } |
| 9620 | ahd_unpause(ahd); |
| 9621 | ahd_unlock(ahd, &s); |
| 9622 | ccb->ccb_h.status = CAM_REQ_CMP; |
| 9623 | xpt_print_path(ccb->ccb_h.path); |
| 9624 | printf("Lun now enabled for target mode\n"); |
| 9625 | } else { |
| 9626 | struct scb *scb; |
| 9627 | int i, empty; |
| 9628 | |
| 9629 | if (lstate == NULL) { |
| 9630 | ccb->ccb_h.status = CAM_LUN_INVALID; |
| 9631 | return; |
| 9632 | } |
| 9633 | |
| 9634 | ahd_lock(ahd, &s); |
| 9635 | |
| 9636 | ccb->ccb_h.status = CAM_REQ_CMP; |
| 9637 | LIST_FOREACH(scb, &ahd->pending_scbs, pending_links) { |
| 9638 | struct ccb_hdr *ccbh; |
| 9639 | |
| 9640 | ccbh = &scb->io_ctx->ccb_h; |
| 9641 | if (ccbh->func_code == XPT_CONT_TARGET_IO |
| 9642 | && !xpt_path_comp(ccbh->path, ccb->ccb_h.path)){ |
| 9643 | printf("CTIO pending\n"); |
| 9644 | ccb->ccb_h.status = CAM_REQ_INVALID; |
| 9645 | ahd_unlock(ahd, &s); |
| 9646 | return; |
| 9647 | } |
| 9648 | } |
| 9649 | |
| 9650 | if (SLIST_FIRST(&lstate->accept_tios) != NULL) { |
| 9651 | printf("ATIOs pending\n"); |
| 9652 | ccb->ccb_h.status = CAM_REQ_INVALID; |
| 9653 | } |
| 9654 | |
| 9655 | if (SLIST_FIRST(&lstate->immed_notifies) != NULL) { |
| 9656 | printf("INOTs pending\n"); |
| 9657 | ccb->ccb_h.status = CAM_REQ_INVALID; |
| 9658 | } |
| 9659 | |
| 9660 | if (ccb->ccb_h.status != CAM_REQ_CMP) { |
| 9661 | ahd_unlock(ahd, &s); |
| 9662 | return; |
| 9663 | } |
| 9664 | |
| 9665 | xpt_print_path(ccb->ccb_h.path); |
| 9666 | printf("Target mode disabled\n"); |
| 9667 | xpt_free_path(lstate->path); |
| 9668 | free(lstate, M_DEVBUF); |
| 9669 | |
| 9670 | ahd_pause(ahd); |
| 9671 | /* Can we clean up the target too? */ |
| 9672 | if (target != CAM_TARGET_WILDCARD) { |
| 9673 | tstate->enabled_luns[lun] = NULL; |
| 9674 | ahd->enabled_luns--; |
| 9675 | for (empty = 1, i = 0; i < 8; i++) |
| 9676 | if (tstate->enabled_luns[i] != NULL) { |
| 9677 | empty = 0; |
| 9678 | break; |
| 9679 | } |
| 9680 | |
| 9681 | if (empty) { |
| 9682 | ahd_free_tstate(ahd, target, channel, |
| 9683 | /*force*/FALSE); |
| 9684 | if (ahd->features & AHD_MULTI_TID) { |
| 9685 | u_int targid_mask; |
| 9686 | |
Hannes Reinecke | ba62cd2 | 2006-01-12 12:07:02 +0100 | [diff] [blame] | 9687 | targid_mask = ahd_inw(ahd, TARGID); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9688 | targid_mask &= ~target_mask; |
Hannes Reinecke | ba62cd2 | 2006-01-12 12:07:02 +0100 | [diff] [blame] | 9689 | ahd_outw(ahd, TARGID, targid_mask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9690 | ahd_update_scsiid(ahd, targid_mask); |
| 9691 | } |
| 9692 | } |
| 9693 | } else { |
| 9694 | |
| 9695 | ahd->black_hole = NULL; |
| 9696 | |
| 9697 | /* |
| 9698 | * We can't allow selections without |
| 9699 | * our black hole device. |
| 9700 | */ |
| 9701 | empty = TRUE; |
| 9702 | } |
| 9703 | if (ahd->enabled_luns == 0) { |
| 9704 | /* Disallow select-in */ |
| 9705 | u_int scsiseq1; |
| 9706 | |
| 9707 | scsiseq1 = ahd_inb(ahd, SCSISEQ_TEMPLATE); |
| 9708 | scsiseq1 &= ~ENSELI; |
| 9709 | ahd_outb(ahd, SCSISEQ_TEMPLATE, scsiseq1); |
| 9710 | scsiseq1 = ahd_inb(ahd, SCSISEQ1); |
| 9711 | scsiseq1 &= ~ENSELI; |
| 9712 | ahd_outb(ahd, SCSISEQ1, scsiseq1); |
| 9713 | |
| 9714 | if ((ahd->features & AHD_MULTIROLE) == 0) { |
| 9715 | printf("Configuring Initiator Mode\n"); |
| 9716 | ahd->flags &= ~AHD_TARGETROLE; |
| 9717 | ahd->flags |= AHD_INITIATORROLE; |
| 9718 | ahd_pause(ahd); |
| 9719 | ahd_loadseq(ahd); |
| 9720 | ahd_restart(ahd); |
| 9721 | /* |
| 9722 | * Unpaused. The extra unpause |
| 9723 | * that follows is harmless. |
| 9724 | */ |
| 9725 | } |
| 9726 | } |
| 9727 | ahd_unpause(ahd); |
| 9728 | ahd_unlock(ahd, &s); |
| 9729 | } |
| 9730 | #endif |
| 9731 | } |
| 9732 | |
| 9733 | static void |
| 9734 | ahd_update_scsiid(struct ahd_softc *ahd, u_int targid_mask) |
| 9735 | { |
| 9736 | #if NOT_YET |
| 9737 | u_int scsiid_mask; |
| 9738 | u_int scsiid; |
| 9739 | |
| 9740 | if ((ahd->features & AHD_MULTI_TID) == 0) |
| 9741 | panic("ahd_update_scsiid called on non-multitid unit\n"); |
| 9742 | |
| 9743 | /* |
| 9744 | * Since we will rely on the TARGID mask |
| 9745 | * for selection enables, ensure that OID |
| 9746 | * in SCSIID is not set to some other ID |
| 9747 | * that we don't want to allow selections on. |
| 9748 | */ |
| 9749 | if ((ahd->features & AHD_ULTRA2) != 0) |
| 9750 | scsiid = ahd_inb(ahd, SCSIID_ULTRA2); |
| 9751 | else |
| 9752 | scsiid = ahd_inb(ahd, SCSIID); |
| 9753 | scsiid_mask = 0x1 << (scsiid & OID); |
| 9754 | if ((targid_mask & scsiid_mask) == 0) { |
| 9755 | u_int our_id; |
| 9756 | |
| 9757 | /* ffs counts from 1 */ |
| 9758 | our_id = ffs(targid_mask); |
| 9759 | if (our_id == 0) |
| 9760 | our_id = ahd->our_id; |
| 9761 | else |
| 9762 | our_id--; |
| 9763 | scsiid &= TID; |
| 9764 | scsiid |= our_id; |
| 9765 | } |
| 9766 | if ((ahd->features & AHD_ULTRA2) != 0) |
| 9767 | ahd_outb(ahd, SCSIID_ULTRA2, scsiid); |
| 9768 | else |
| 9769 | ahd_outb(ahd, SCSIID, scsiid); |
| 9770 | #endif |
| 9771 | } |
| 9772 | |
| 9773 | void |
| 9774 | ahd_run_tqinfifo(struct ahd_softc *ahd, int paused) |
| 9775 | { |
| 9776 | struct target_cmd *cmd; |
| 9777 | |
| 9778 | ahd_sync_tqinfifo(ahd, BUS_DMASYNC_POSTREAD); |
| 9779 | while ((cmd = &ahd->targetcmds[ahd->tqinfifonext])->cmd_valid != 0) { |
| 9780 | |
| 9781 | /* |
| 9782 | * Only advance through the queue if we |
| 9783 | * have the resources to process the command. |
| 9784 | */ |
| 9785 | if (ahd_handle_target_cmd(ahd, cmd) != 0) |
| 9786 | break; |
| 9787 | |
| 9788 | cmd->cmd_valid = 0; |
| 9789 | ahd_dmamap_sync(ahd, ahd->shared_data_dmat, |
Hannes Reinecke | 66a0683 | 2006-01-12 12:05:46 +0100 | [diff] [blame] | 9790 | ahd->shared_data_map.dmamap, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9791 | ahd_targetcmd_offset(ahd, ahd->tqinfifonext), |
| 9792 | sizeof(struct target_cmd), |
| 9793 | BUS_DMASYNC_PREREAD); |
| 9794 | ahd->tqinfifonext++; |
| 9795 | |
| 9796 | /* |
| 9797 | * Lazily update our position in the target mode incoming |
| 9798 | * command queue as seen by the sequencer. |
| 9799 | */ |
| 9800 | if ((ahd->tqinfifonext & (HOST_TQINPOS - 1)) == 1) { |
| 9801 | u_int hs_mailbox; |
| 9802 | |
| 9803 | hs_mailbox = ahd_inb(ahd, HS_MAILBOX); |
| 9804 | hs_mailbox &= ~HOST_TQINPOS; |
| 9805 | hs_mailbox |= ahd->tqinfifonext & HOST_TQINPOS; |
| 9806 | ahd_outb(ahd, HS_MAILBOX, hs_mailbox); |
| 9807 | } |
| 9808 | } |
| 9809 | } |
| 9810 | |
| 9811 | static int |
| 9812 | ahd_handle_target_cmd(struct ahd_softc *ahd, struct target_cmd *cmd) |
| 9813 | { |
| 9814 | struct ahd_tmode_tstate *tstate; |
| 9815 | struct ahd_tmode_lstate *lstate; |
| 9816 | struct ccb_accept_tio *atio; |
| 9817 | uint8_t *byte; |
| 9818 | int initiator; |
| 9819 | int target; |
| 9820 | int lun; |
| 9821 | |
| 9822 | initiator = SCSIID_TARGET(ahd, cmd->scsiid); |
| 9823 | target = SCSIID_OUR_ID(cmd->scsiid); |
| 9824 | lun = (cmd->identify & MSG_IDENTIFY_LUNMASK); |
| 9825 | |
| 9826 | byte = cmd->bytes; |
| 9827 | tstate = ahd->enabled_targets[target]; |
| 9828 | lstate = NULL; |
| 9829 | if (tstate != NULL) |
| 9830 | lstate = tstate->enabled_luns[lun]; |
| 9831 | |
| 9832 | /* |
| 9833 | * Commands for disabled luns go to the black hole driver. |
| 9834 | */ |
| 9835 | if (lstate == NULL) |
| 9836 | lstate = ahd->black_hole; |
| 9837 | |
| 9838 | atio = (struct ccb_accept_tio*)SLIST_FIRST(&lstate->accept_tios); |
| 9839 | if (atio == NULL) { |
| 9840 | ahd->flags |= AHD_TQINFIFO_BLOCKED; |
| 9841 | /* |
| 9842 | * Wait for more ATIOs from the peripheral driver for this lun. |
| 9843 | */ |
| 9844 | return (1); |
| 9845 | } else |
| 9846 | ahd->flags &= ~AHD_TQINFIFO_BLOCKED; |
| 9847 | #ifdef AHD_DEBUG |
| 9848 | if ((ahd_debug & AHD_SHOW_TQIN) != 0) |
| 9849 | printf("Incoming command from %d for %d:%d%s\n", |
| 9850 | initiator, target, lun, |
| 9851 | lstate == ahd->black_hole ? "(Black Holed)" : ""); |
| 9852 | #endif |
| 9853 | SLIST_REMOVE_HEAD(&lstate->accept_tios, sim_links.sle); |
| 9854 | |
| 9855 | if (lstate == ahd->black_hole) { |
| 9856 | /* Fill in the wildcards */ |
| 9857 | atio->ccb_h.target_id = target; |
| 9858 | atio->ccb_h.target_lun = lun; |
| 9859 | } |
| 9860 | |
| 9861 | /* |
| 9862 | * Package it up and send it off to |
| 9863 | * whomever has this lun enabled. |
| 9864 | */ |
| 9865 | atio->sense_len = 0; |
| 9866 | atio->init_id = initiator; |
| 9867 | if (byte[0] != 0xFF) { |
| 9868 | /* Tag was included */ |
| 9869 | atio->tag_action = *byte++; |
| 9870 | atio->tag_id = *byte++; |
| 9871 | atio->ccb_h.flags = CAM_TAG_ACTION_VALID; |
| 9872 | } else { |
| 9873 | atio->ccb_h.flags = 0; |
| 9874 | } |
| 9875 | byte++; |
| 9876 | |
| 9877 | /* Okay. Now determine the cdb size based on the command code */ |
| 9878 | switch (*byte >> CMD_GROUP_CODE_SHIFT) { |
| 9879 | case 0: |
| 9880 | atio->cdb_len = 6; |
| 9881 | break; |
| 9882 | case 1: |
| 9883 | case 2: |
| 9884 | atio->cdb_len = 10; |
| 9885 | break; |
| 9886 | case 4: |
| 9887 | atio->cdb_len = 16; |
| 9888 | break; |
| 9889 | case 5: |
| 9890 | atio->cdb_len = 12; |
| 9891 | break; |
| 9892 | case 3: |
| 9893 | default: |
| 9894 | /* Only copy the opcode. */ |
| 9895 | atio->cdb_len = 1; |
| 9896 | printf("Reserved or VU command code type encountered\n"); |
| 9897 | break; |
| 9898 | } |
| 9899 | |
| 9900 | memcpy(atio->cdb_io.cdb_bytes, byte, atio->cdb_len); |
| 9901 | |
| 9902 | atio->ccb_h.status |= CAM_CDB_RECVD; |
| 9903 | |
| 9904 | if ((cmd->identify & MSG_IDENTIFY_DISCFLAG) == 0) { |
| 9905 | /* |
| 9906 | * We weren't allowed to disconnect. |
| 9907 | * We're hanging on the bus until a |
| 9908 | * continue target I/O comes in response |
| 9909 | * to this accept tio. |
| 9910 | */ |
| 9911 | #ifdef AHD_DEBUG |
| 9912 | if ((ahd_debug & AHD_SHOW_TQIN) != 0) |
| 9913 | printf("Received Immediate Command %d:%d:%d - %p\n", |
| 9914 | initiator, target, lun, ahd->pending_device); |
| 9915 | #endif |
| 9916 | ahd->pending_device = lstate; |
| 9917 | ahd_freeze_ccb((union ccb *)atio); |
| 9918 | atio->ccb_h.flags |= CAM_DIS_DISCONNECT; |
| 9919 | } |
| 9920 | xpt_done((union ccb*)atio); |
| 9921 | return (0); |
| 9922 | } |
| 9923 | |
| 9924 | #endif |