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  * Copyright (c) 2007 LSI Corp.
   28  * Copyright (c) 2007 Rajesh Prabhakaran.
   29  * All rights reserved.
   30  *
   31  * Redistribution and use in source and binary forms, with or without
   32  * modification, are permitted provided that the following conditions
   33  * are met:
   34  * 1. Redistributions of source code must retain the above copyright
   35  *    notice, this list of conditions and the following disclaimer.
   36  * 2. Redistributions in binary form must reproduce the above copyright
   37  *    notice, this list of conditions and the following disclaimer in the
   38  *    documentation and/or other materials provided with the distribution.
   39  *
   40  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   41  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   42  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   43  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   44  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   45  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   46  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   48  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   49  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   50  * SUCH DAMAGE.
   51  */
   52 
   53 #ifndef _MFIVAR_H
   54 #define _MFIVAR_H
   55 
   56 #include <sys/cdefs.h>
   57 __FBSDID("$FreeBSD$");
   58 
   59 #include <sys/lock.h>
   60 #include <sys/sx.h>
   61 
   62 /*
   63  * SCSI structures and definitions are used from here, but no linking
   64  * requirements are made to CAM.
   65  */
   66 #include <cam/scsi/scsi_all.h>
   67 
   68 struct mfi_hwcomms {
   69         uint32_t                hw_pi;
   70         uint32_t                hw_ci;
   71         uint32_t                hw_reply_q[1];
   72 };
   73 
   74 struct mfi_softc;
   75 struct disk;
   76 struct ccb_hdr;
   77 
   78 struct mfi_command {
   79         TAILQ_ENTRY(mfi_command) cm_link;
   80         time_t                  cm_timestamp;
   81         struct mfi_softc        *cm_sc;
   82         union mfi_frame         *cm_frame;
   83         uint32_t                cm_frame_busaddr;
   84         struct mfi_sense        *cm_sense;
   85         uint32_t                cm_sense_busaddr;
   86         bus_dmamap_t            cm_dmamap;
   87         union mfi_sgl           *cm_sg;
   88         void                    *cm_data;
   89         int                     cm_len;
   90         int                     cm_total_frame_size;
   91         int                     cm_extra_frames;
   92         int                     cm_flags;
   93 #define MFI_CMD_MAPPED          (1<<0)
   94 #define MFI_CMD_DATAIN          (1<<1)
   95 #define MFI_CMD_DATAOUT         (1<<2)
   96 #define MFI_CMD_COMPLETED       (1<<3)
   97 #define MFI_CMD_POLLED          (1<<4)
   98 #define MFI_ON_MFIQ_FREE        (1<<5)
   99 #define MFI_ON_MFIQ_READY       (1<<6)
  100 #define MFI_ON_MFIQ_BUSY        (1<<7)
  101 #define MFI_ON_MFIQ_MASK        ((1<<5)|(1<<6)|(1<<7))
  102         int                     cm_aen_abort;
  103         void                    (* cm_complete)(struct mfi_command *cm);
  104         void                    *cm_private;
  105         int                     cm_index;
  106         int                     cm_error;
  107 };
  108 
  109 struct mfi_disk {
  110         TAILQ_ENTRY(mfi_disk)   ld_link;
  111         device_t        ld_dev;
  112         int             ld_id;
  113         int             ld_unit;
  114         struct mfi_softc *ld_controller;
  115         struct mfi_ld_info      *ld_info;
  116         struct disk     *ld_disk;
  117         int             ld_flags;
  118 #define MFI_DISK_FLAGS_OPEN     0x01
  119 #define MFI_DISK_FLAGS_DISABLED 0x02
  120 };
  121 
  122 struct mfi_aen {
  123         TAILQ_ENTRY(mfi_aen) aen_link;
  124         struct proc                     *p;
  125 };
  126 
  127 struct mfi_softc {
  128         device_t                        mfi_dev;
  129         int                             mfi_flags;
  130 #define MFI_FLAGS_SG64          (1<<0)
  131 #define MFI_FLAGS_QFRZN         (1<<1)
  132 #define MFI_FLAGS_OPEN          (1<<2)
  133 #define MFI_FLAGS_STOP          (1<<3)
  134 #define MFI_FLAGS_1064R         (1<<4)
  135 #define MFI_FLAGS_1078          (1<<5)
  136 #define MFI_FLAGS_GEN2          (1<<6)
  137 
  138         struct mfi_hwcomms              *mfi_comms;
  139         TAILQ_HEAD(,mfi_command)        mfi_free;
  140         TAILQ_HEAD(,mfi_command)        mfi_ready;
  141         TAILQ_HEAD(,mfi_command)        mfi_busy;
  142         struct bio_queue_head           mfi_bioq;
  143         struct mfi_qstat                mfi_qstat[MFIQ_COUNT];
  144 
  145         struct resource                 *mfi_regs_resource;
  146         bus_space_handle_t              mfi_bhandle;
  147         bus_space_tag_t                 mfi_btag;
  148         int                             mfi_regs_rid;
  149 
  150         bus_dma_tag_t                   mfi_parent_dmat;
  151         bus_dma_tag_t                   mfi_buffer_dmat;
  152 
  153         bus_dma_tag_t                   mfi_comms_dmat;
  154         bus_dmamap_t                    mfi_comms_dmamap;
  155         uint32_t                        mfi_comms_busaddr;
  156 
  157         bus_dma_tag_t                   mfi_frames_dmat;
  158         bus_dmamap_t                    mfi_frames_dmamap;
  159         uint32_t                        mfi_frames_busaddr;
  160         union mfi_frame                 *mfi_frames;
  161 
  162         TAILQ_HEAD(,mfi_aen)            mfi_aen_pids;
  163         struct mfi_command              *mfi_aen_cm;
  164         uint32_t                        mfi_aen_triggered;
  165         uint32_t                        mfi_poll_waiting;
  166         struct selinfo                  mfi_select;
  167         int                             mfi_delete_busy_volumes;
  168         int                             mfi_keep_deleted_volumes;
  169         int                             mfi_detaching;
  170 
  171         bus_dma_tag_t                   mfi_sense_dmat;
  172         bus_dmamap_t                    mfi_sense_dmamap;
  173         uint32_t                        mfi_sense_busaddr;
  174         struct mfi_sense                *mfi_sense;
  175 
  176         struct resource                 *mfi_irq;
  177         void                            *mfi_intr;
  178         int                             mfi_irq_rid;
  179 
  180         struct intr_config_hook         mfi_ich;
  181         eventhandler_tag                eh;
  182 
  183         /*
  184          * Allocation for the command array.  Used as an indexable array to
  185          * recover completed commands.
  186          */
  187         struct mfi_command              *mfi_commands;
  188         /*
  189          * How many commands were actually allocated
  190          */
  191         int                             mfi_total_cmds;
  192         /*
  193          * How many commands the firmware can handle.  Also how big the reply
  194          * queue is, minus 1.
  195          */
  196         int                             mfi_max_fw_cmds;
  197         /*
  198          * How many S/G elements we'll ever actually use 
  199          */
  200         int                             mfi_max_sge;
  201         /*
  202          * How many bytes a compound frame is, including all of the extra frames
  203          * that are used for S/G elements.
  204          */
  205         int                             mfi_cmd_size;
  206         /*
  207          * How large an S/G element is.  Used to calculate the number of single
  208          * frames in a command.
  209          */
  210         int                             mfi_sge_size;
  211         /*
  212          * Max number of sectors that the firmware allows
  213          */
  214         uint32_t                        mfi_max_io;
  215 
  216         TAILQ_HEAD(,mfi_disk)           mfi_ld_tqh;
  217         eventhandler_tag                mfi_eh;
  218         struct cdev                     *mfi_cdev;
  219 
  220         TAILQ_HEAD(, ccb_hdr)           mfi_cam_ccbq;
  221         struct mfi_command *            (* mfi_cam_start)(void *);
  222         struct callout                  mfi_watchdog_callout;
  223         struct mtx                      mfi_io_lock;
  224         struct sx                       mfi_config_lock;
  225 
  226         /* Controller type specific interfaces */
  227         void    (*mfi_enable_intr)(struct mfi_softc *sc);
  228         int32_t (*mfi_read_fw_status)(struct mfi_softc *sc);
  229         int     (*mfi_check_clear_intr)(struct mfi_softc *sc);
  230         void    (*mfi_issue_cmd)(struct mfi_softc *sc,uint32_t bus_add,uint32_t frame_cnt);
  231 };
  232 
  233 extern int mfi_attach(struct mfi_softc *);
  234 extern void mfi_free(struct mfi_softc *);
  235 extern int mfi_shutdown(struct mfi_softc *);
  236 extern void mfi_startio(struct mfi_softc *);
  237 extern void mfi_disk_complete(struct bio *);
  238 extern int mfi_disk_disable(struct mfi_disk *);
  239 extern void mfi_disk_enable(struct mfi_disk *);
  240 extern int mfi_dump_blocks(struct mfi_softc *, int id, uint64_t, void *, int);
  241 
  242 #define MFIQ_ADD(sc, qname)                                     \
  243         do {                                                    \
  244                 struct mfi_qstat *qs;                           \
  245                                                                 \
  246                 qs = &(sc)->mfi_qstat[qname];                   \
  247                 qs->q_length++;                                 \
  248                 if (qs->q_length > qs->q_max)                   \
  249                         qs->q_max = qs->q_length;               \
  250         } while (0)
  251 
  252 #define MFIQ_REMOVE(sc, qname)  (sc)->mfi_qstat[qname].q_length--
  253 
  254 #define MFIQ_INIT(sc, qname)                                    \
  255         do {                                                    \
  256                 sc->mfi_qstat[qname].q_length = 0;              \
  257                 sc->mfi_qstat[qname].q_max = 0;                 \
  258         } while (0)
  259 
  260 #define MFIQ_COMMAND_QUEUE(name, index)                                 \
  261         static __inline void                                            \
  262         mfi_initq_ ## name (struct mfi_softc *sc)                       \
  263         {                                                               \
  264                 TAILQ_INIT(&sc->mfi_ ## name);                          \
  265                 MFIQ_INIT(sc, index);                                   \
  266         }                                                               \
  267         static __inline void                                            \
  268         mfi_enqueue_ ## name (struct mfi_command *cm)                   \
  269         {                                                               \
  270                 if ((cm->cm_flags & MFI_ON_MFIQ_MASK) != 0) {           \
  271                         printf("command %p is on another queue, "       \
  272                             "flags = %#x\n", cm, cm->cm_flags);         \
  273                         panic("command is on another queue");           \
  274                 }                                                       \
  275                 TAILQ_INSERT_TAIL(&cm->cm_sc->mfi_ ## name, cm, cm_link); \
  276                 cm->cm_flags |= MFI_ON_ ## index;                       \
  277                 MFIQ_ADD(cm->cm_sc, index);                             \
  278         }                                                               \
  279         static __inline void                                            \
  280         mfi_requeue_ ## name (struct mfi_command *cm)                   \
  281         {                                                               \
  282                 if ((cm->cm_flags & MFI_ON_MFIQ_MASK) != 0) {           \
  283                         printf("command %p is on another queue, "       \
  284                             "flags = %#x\n", cm, cm->cm_flags);         \
  285                         panic("command is on another queue");           \
  286                 }                                                       \
  287                 TAILQ_INSERT_HEAD(&cm->cm_sc->mfi_ ## name, cm, cm_link); \
  288                 cm->cm_flags |= MFI_ON_ ## index;                       \
  289                 MFIQ_ADD(cm->cm_sc, index);                             \
  290         }                                                               \
  291         static __inline struct mfi_command *                            \
  292         mfi_dequeue_ ## name (struct mfi_softc *sc)                     \
  293         {                                                               \
  294                 struct mfi_command *cm;                                 \
  295                                                                         \
  296                 if ((cm = TAILQ_FIRST(&sc->mfi_ ## name)) != NULL) {    \
  297                         if ((cm->cm_flags & MFI_ON_ ## index) == 0) {   \
  298                                 printf("command %p not in queue, "      \
  299                                     "flags = %#x, bit = %#x\n", cm,     \
  300                                     cm->cm_flags, MFI_ON_ ## index);    \
  301                                 panic("command not in queue");          \
  302                         }                                               \
  303                         TAILQ_REMOVE(&sc->mfi_ ## name, cm, cm_link);   \
  304                         cm->cm_flags &= ~MFI_ON_ ## index;              \
  305                         MFIQ_REMOVE(sc, index);                         \
  306                 }                                                       \
  307                 return (cm);                                            \
  308         }                                                               \
  309         static __inline void                                            \
  310         mfi_remove_ ## name (struct mfi_command *cm)                    \
  311         {                                                               \
  312                 if ((cm->cm_flags & MFI_ON_ ## index) == 0) {           \
  313                         printf("command %p not in queue, flags = %#x, " \
  314                             "bit = %#x\n", cm, cm->cm_flags,            \
  315                             MFI_ON_ ## index);                          \
  316                         panic("command not in queue");                  \
  317                 }                                                       \
  318                 TAILQ_REMOVE(&cm->cm_sc->mfi_ ## name, cm, cm_link);    \
  319                 cm->cm_flags &= ~MFI_ON_ ## index;                      \
  320                 MFIQ_REMOVE(cm->cm_sc, index);                          \
  321         }                                                               \
  322 struct hack
  323 
  324 MFIQ_COMMAND_QUEUE(free, MFIQ_FREE);
  325 MFIQ_COMMAND_QUEUE(ready, MFIQ_READY);
  326 MFIQ_COMMAND_QUEUE(busy, MFIQ_BUSY);
  327 
  328 static __inline void
  329 mfi_initq_bio(struct mfi_softc *sc)
  330 {
  331         bioq_init(&sc->mfi_bioq);
  332         MFIQ_INIT(sc, MFIQ_BIO);
  333 }
  334 
  335 static __inline void
  336 mfi_enqueue_bio(struct mfi_softc *sc, struct bio *bp)
  337 {
  338         bioq_insert_tail(&sc->mfi_bioq, bp);
  339         MFIQ_ADD(sc, MFIQ_BIO);
  340 }
  341 
  342 static __inline struct bio *
  343 mfi_dequeue_bio(struct mfi_softc *sc)
  344 {
  345         struct bio *bp;
  346 
  347         if ((bp = bioq_first(&sc->mfi_bioq)) != NULL) {
  348                 bioq_remove(&sc->mfi_bioq, bp);
  349                 MFIQ_REMOVE(sc, MFIQ_BIO);
  350         }
  351         return (bp);
  352 }
  353 
  354 static __inline void
  355 mfi_print_sense(struct mfi_softc *sc, void *sense)
  356 {
  357         int error, key, asc, ascq;
  358 
  359         scsi_extract_sense((struct scsi_sense_data *)sense,
  360             &error, &key, &asc, &ascq);
  361         device_printf(sc->mfi_dev, "sense error %d, sense_key %d, "
  362             "asc %d, ascq %d\n", error, key, asc, ascq);
  363 }
  364 
  365 
  366 #define MFI_WRITE4(sc, reg, val)        bus_space_write_4((sc)->mfi_btag, \
  367         sc->mfi_bhandle, (reg), (val))
  368 #define MFI_READ4(sc, reg)              bus_space_read_4((sc)->mfi_btag, \
  369         (sc)->mfi_bhandle, (reg))
  370 #define MFI_WRITE2(sc, reg, val)        bus_space_write_2((sc)->mfi_btag, \
  371         sc->mfi_bhandle, (reg), (val))
  372 #define MFI_READ2(sc, reg)              bus_space_read_2((sc)->mfi_btag, \
  373         (sc)->mfi_bhandle, (reg))
  374 #define MFI_WRITE1(sc, reg, val)        bus_space_write_1((sc)->mfi_btag, \
  375         sc->mfi_bhandle, (reg), (val))
  376 #define MFI_READ1(sc, reg)              bus_space_read_1((sc)->mfi_btag, \
  377         (sc)->mfi_bhandle, (reg))
  378 
  379 MALLOC_DECLARE(M_MFIBUF);
  380 
  381 #define MFI_CMD_TIMEOUT 30
  382 
  383 #ifdef MFI_DEBUG
  384 extern void mfi_print_cmd(struct mfi_command *cm);
  385 extern void mfi_dump_cmds(struct mfi_softc *sc);
  386 extern void mfi_validate_sg(struct mfi_softc *, struct mfi_command *, const char *, int );
  387 #define MFI_PRINT_CMD(cm)       mfi_print_cmd(cm)
  388 #define MFI_DUMP_CMDS(sc)       mfi_dump_cmds(sc)
  389 #define MFI_VALIDATE_CMD(sc, cm) mfi_validate_sg(sc, cm, __FUNCTION__, __LINE__)
  390 #else
  391 #define MFI_PRINT_CMD(cm)
  392 #define MFI_DUMP_CMDS(sc)
  393 #define MFI_VALIDATE_CMD(sc, cm)
  394 #endif
  395 
  396 extern void mfi_release_command(struct mfi_command *cm);
  397 
  398 #endif /* _MFIVAR_H */

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