Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/mfi/mfivar.h
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1 /*- 2 * Copyright (c) 2006 IronPort Systems 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #ifndef _MFIVAR_H 28 #define _MFIVAR_H 29 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD: releng/6.2/sys/dev/mfi/mfivar.h 163554 2006-10-21 05:28:50Z scottl $"); 32 33 /* 34 * SCSI structures and definitions are used from here, but no linking 35 * requirements are made to CAM. 36 */ 37 #include <cam/scsi/scsi_all.h> 38 39 struct mfi_hwcomms { 40 uint32_t hw_pi; 41 uint32_t hw_ci; 42 uint32_t hw_reply_q[1]; 43 }; 44 45 struct mfi_softc; 46 47 struct mfi_command { 48 TAILQ_ENTRY(mfi_command) cm_link; 49 time_t cm_timestamp; 50 struct mfi_softc *cm_sc; 51 union mfi_frame *cm_frame; 52 uint32_t cm_frame_busaddr; 53 struct mfi_sense *cm_sense; 54 uint32_t cm_sense_busaddr; 55 bus_dmamap_t cm_dmamap; 56 union mfi_sgl *cm_sg; 57 void *cm_data; 58 int cm_len; 59 int cm_total_frame_size; 60 int cm_extra_frames; 61 int cm_flags; 62 #define MFI_CMD_MAPPED (1<<0) 63 #define MFI_CMD_DATAIN (1<<1) 64 #define MFI_CMD_DATAOUT (1<<2) 65 #define MFI_CMD_COMPLETED (1<<3) 66 #define MFI_CMD_POLLED (1<<4) 67 #define MFI_ON_MFIQ_FREE (1<<5) 68 #define MFI_ON_MFIQ_READY (1<<6) 69 #define MFI_ON_MFIQ_BUSY (1<<7) 70 #define MFI_ON_MFIQ_MASK ((1<<5)|(1<<6)|(1<<7)) 71 int cm_aen_abort; 72 void (* cm_complete)(struct mfi_command *cm); 73 void *cm_private; 74 int cm_index; 75 }; 76 77 struct mfi_ld { 78 TAILQ_ENTRY(mfi_ld) ld_link; 79 device_t ld_disk; 80 struct mfi_ld_info *ld_info; 81 int ld_id; 82 }; 83 84 struct mfi_aen { 85 TAILQ_ENTRY(mfi_aen) aen_link; 86 struct proc *p; 87 }; 88 89 struct mfi_softc { 90 device_t mfi_dev; 91 int mfi_flags; 92 #define MFI_FLAGS_SG64 (1<<0) 93 #define MFI_FLAGS_QFRZN (1<<1) 94 #define MFI_FLAGS_OPEN (1<<2) 95 #define MFI_FLAGS_STOP (1<<3) 96 97 struct mfi_hwcomms *mfi_comms; 98 TAILQ_HEAD(,mfi_command) mfi_free; 99 TAILQ_HEAD(,mfi_command) mfi_ready; 100 TAILQ_HEAD(,mfi_command) mfi_busy; 101 struct bio_queue_head mfi_bioq; 102 struct mfi_qstat mfi_qstat[MFIQ_COUNT]; 103 104 struct resource *mfi_regs_resource; 105 bus_space_handle_t mfi_bhandle; 106 bus_space_tag_t mfi_btag; 107 int mfi_regs_rid; 108 109 bus_dma_tag_t mfi_parent_dmat; 110 bus_dma_tag_t mfi_buffer_dmat; 111 112 bus_dma_tag_t mfi_comms_dmat; 113 bus_dmamap_t mfi_comms_dmamap; 114 uint32_t mfi_comms_busaddr; 115 116 bus_dma_tag_t mfi_frames_dmat; 117 bus_dmamap_t mfi_frames_dmamap; 118 uint32_t mfi_frames_busaddr; 119 union mfi_frame *mfi_frames; 120 121 TAILQ_HEAD(,mfi_aen) mfi_aen_pids; 122 struct mfi_command *mfi_aen_cm; 123 uint32_t mfi_aen_triggered; 124 uint32_t mfi_poll_waiting; 125 struct selinfo mfi_select; 126 127 bus_dma_tag_t mfi_sense_dmat; 128 bus_dmamap_t mfi_sense_dmamap; 129 uint32_t mfi_sense_busaddr; 130 struct mfi_sense *mfi_sense; 131 132 struct resource *mfi_irq; 133 void *mfi_intr; 134 int mfi_irq_rid; 135 136 struct intr_config_hook mfi_ich; 137 eventhandler_tag eh; 138 139 /* 140 * Allocation for the command array. Used as an indexable array to 141 * recover completed commands. 142 */ 143 struct mfi_command *mfi_commands; 144 /* 145 * How many commands were actually allocated 146 */ 147 int mfi_total_cmds; 148 /* 149 * How many commands the firmware can handle. Also how big the reply 150 * queue is, minus 1. 151 */ 152 int mfi_max_fw_cmds; 153 /* 154 * How many S/G elements we'll ever actually use 155 */ 156 int mfi_max_sge; 157 /* 158 * How many bytes a compound frame is, including all of the extra frames 159 * that are used for S/G elements. 160 */ 161 int mfi_cmd_size; 162 /* 163 * How large an S/G element is. Used to calculate the number of single 164 * frames in a command. 165 */ 166 int mfi_sge_size; 167 /* 168 * Max number of sectors that the firmware allows 169 */ 170 uint32_t mfi_max_io; 171 172 TAILQ_HEAD(,mfi_ld) mfi_ld_tqh; 173 eventhandler_tag mfi_eh; 174 struct cdev *mfi_cdev; 175 176 struct callout mfi_watchdog_callout; 177 struct mtx mfi_io_lock; 178 }; 179 180 extern int mfi_attach(struct mfi_softc *); 181 extern void mfi_free(struct mfi_softc *); 182 extern int mfi_shutdown(struct mfi_softc *); 183 extern void mfi_startio(struct mfi_softc *); 184 extern void mfi_disk_complete(struct bio *); 185 extern int mfi_dump_blocks(struct mfi_softc *, int id, uint64_t, void *, int); 186 187 #define MFIQ_ADD(sc, qname) \ 188 do { \ 189 struct mfi_qstat *qs; \ 190 \ 191 qs = &(sc)->mfi_qstat[qname]; \ 192 qs->q_length++; \ 193 if (qs->q_length > qs->q_max) \ 194 qs->q_max = qs->q_length; \ 195 } while (0) 196 197 #define MFIQ_REMOVE(sc, qname) (sc)->mfi_qstat[qname].q_length-- 198 199 #define MFIQ_INIT(sc, qname) \ 200 do { \ 201 sc->mfi_qstat[qname].q_length = 0; \ 202 sc->mfi_qstat[qname].q_max = 0; \ 203 } while (0) 204 205 #define MFIQ_COMMAND_QUEUE(name, index) \ 206 static __inline void \ 207 mfi_initq_ ## name (struct mfi_softc *sc) \ 208 { \ 209 TAILQ_INIT(&sc->mfi_ ## name); \ 210 MFIQ_INIT(sc, index); \ 211 } \ 212 static __inline void \ 213 mfi_enqueue_ ## name (struct mfi_command *cm) \ 214 { \ 215 if ((cm->cm_flags & MFI_ON_MFIQ_MASK) != 0) { \ 216 printf("command %p is on another queue, " \ 217 "flags = %#x\n", cm, cm->cm_flags); \ 218 panic("command is on another queue"); \ 219 } \ 220 TAILQ_INSERT_TAIL(&cm->cm_sc->mfi_ ## name, cm, cm_link); \ 221 cm->cm_flags |= MFI_ON_ ## index; \ 222 MFIQ_ADD(cm->cm_sc, index); \ 223 } \ 224 static __inline void \ 225 mfi_requeue_ ## name (struct mfi_command *cm) \ 226 { \ 227 if ((cm->cm_flags & MFI_ON_MFIQ_MASK) != 0) { \ 228 printf("command %p is on another queue, " \ 229 "flags = %#x\n", cm, cm->cm_flags); \ 230 panic("command is on another queue"); \ 231 } \ 232 TAILQ_INSERT_HEAD(&cm->cm_sc->mfi_ ## name, cm, cm_link); \ 233 cm->cm_flags |= MFI_ON_ ## index; \ 234 MFIQ_ADD(cm->cm_sc, index); \ 235 } \ 236 static __inline struct mfi_command * \ 237 mfi_dequeue_ ## name (struct mfi_softc *sc) \ 238 { \ 239 struct mfi_command *cm; \ 240 \ 241 if ((cm = TAILQ_FIRST(&sc->mfi_ ## name)) != NULL) { \ 242 if ((cm->cm_flags & MFI_ON_ ## index) == 0) { \ 243 printf("command %p not in queue, " \ 244 "flags = %#x, bit = %#x\n", cm, \ 245 cm->cm_flags, MFI_ON_ ## index); \ 246 panic("command not in queue"); \ 247 } \ 248 TAILQ_REMOVE(&sc->mfi_ ## name, cm, cm_link); \ 249 cm->cm_flags &= ~MFI_ON_ ## index; \ 250 MFIQ_REMOVE(sc, index); \ 251 } \ 252 return (cm); \ 253 } \ 254 static __inline void \ 255 mfi_remove_ ## name (struct mfi_command *cm) \ 256 { \ 257 if ((cm->cm_flags & MFI_ON_ ## index) == 0) { \ 258 printf("command %p not in queue, flags = %#x, " \ 259 "bit = %#x\n", cm, cm->cm_flags, \ 260 MFI_ON_ ## index); \ 261 panic("command not in queue"); \ 262 } \ 263 TAILQ_REMOVE(&cm->cm_sc->mfi_ ## name, cm, cm_link); \ 264 cm->cm_flags &= ~MFI_ON_ ## index; \ 265 MFIQ_REMOVE(cm->cm_sc, index); \ 266 } \ 267 struct hack 268 269 MFIQ_COMMAND_QUEUE(free, MFIQ_FREE); 270 MFIQ_COMMAND_QUEUE(ready, MFIQ_READY); 271 MFIQ_COMMAND_QUEUE(busy, MFIQ_BUSY); 272 273 static __inline void 274 mfi_initq_bio(struct mfi_softc *sc) 275 { 276 bioq_init(&sc->mfi_bioq); 277 MFIQ_INIT(sc, MFIQ_BIO); 278 } 279 280 static __inline void 281 mfi_enqueue_bio(struct mfi_softc *sc, struct bio *bp) 282 { 283 bioq_insert_tail(&sc->mfi_bioq, bp); 284 MFIQ_ADD(sc, MFIQ_BIO); 285 } 286 287 static __inline struct bio * 288 mfi_dequeue_bio(struct mfi_softc *sc) 289 { 290 struct bio *bp; 291 292 if ((bp = bioq_first(&sc->mfi_bioq)) != NULL) { 293 bioq_remove(&sc->mfi_bioq, bp); 294 MFIQ_REMOVE(sc, MFIQ_BIO); 295 } 296 return (bp); 297 } 298 299 static __inline void 300 mfi_print_sense(struct mfi_softc *sc, void *sense) 301 { 302 int error, key, asc, ascq; 303 304 scsi_extract_sense((struct scsi_sense_data *)sense, 305 &error, &key, &asc, &ascq); 306 device_printf(sc->mfi_dev, "sense error %d, sense_key %d, " 307 "asc %d, ascq %d\n", error, key, asc, ascq); 308 } 309 310 311 #define MFI_WRITE4(sc, reg, val) bus_space_write_4((sc)->mfi_btag, \ 312 sc->mfi_bhandle, (reg), (val)) 313 #define MFI_READ4(sc, reg) bus_space_read_4((sc)->mfi_btag, \ 314 (sc)->mfi_bhandle, (reg)) 315 #define MFI_WRITE2(sc, reg, val) bus_space_write_2((sc)->mfi_btag, \ 316 sc->mfi_bhandle, (reg), (val)) 317 #define MFI_READ2(sc, reg) bus_space_read_2((sc)->mfi_btag, \ 318 (sc)->mfi_bhandle, (reg)) 319 #define MFI_WRITE1(sc, reg, val) bus_space_write_1((sc)->mfi_btag, \ 320 sc->mfi_bhandle, (reg), (val)) 321 #define MFI_READ1(sc, reg) bus_space_read_1((sc)->mfi_btag, \ 322 (sc)->mfi_bhandle, (reg)) 323 324 MALLOC_DECLARE(M_MFIBUF); 325 326 #define MFI_CMD_TIMEOUT 30 327 328 #ifdef MFI_DEBUG 329 extern void mfi_print_cmd(struct mfi_command *cm); 330 extern void mfi_dump_cmds(struct mfi_softc *sc); 331 extern void mfi_validate_sg(struct mfi_softc *, struct mfi_command *, const char *, int ); 332 #define MFI_PRINT_CMD(cm) mfi_print_cmd(cm) 333 #define MFI_DUMP_CMDS(sc) mfi_dump_cmds(sc) 334 #define MFI_VALIDATE_CMD(sc, cm) mfi_validate_sg(sc, cm, __FUNCTION__, __LINE__) 335 #else 336 #define MFI_PRINT_CMD(cm) 337 #define MFI_DUMP_CMDS(sc) 338 #define MFI_VALIDATE_CMD(sc, cm) 339 #endif 340 341 #endif /* _MFIVAR_H */
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