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: releng/8.3/sys/dev/mfi/mfivar.h 229612 2012-01-05 18:31:08Z jhb $");
   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_stp_len;
   91         int                     cm_total_frame_size;
   92         int                     cm_extra_frames;
   93         int                     cm_flags;
   94 #define MFI_CMD_MAPPED          (1<<0)
   95 #define MFI_CMD_DATAIN          (1<<1)
   96 #define MFI_CMD_DATAOUT         (1<<2)
   97 #define MFI_CMD_COMPLETED       (1<<3)
   98 #define MFI_CMD_POLLED          (1<<4)
   99 #define MFI_ON_MFIQ_FREE        (1<<5)
  100 #define MFI_ON_MFIQ_READY       (1<<6)
  101 #define MFI_ON_MFIQ_BUSY        (1<<7)
  102 #define MFI_ON_MFIQ_MASK        ((1<<5)|(1<<6)|(1<<7))
  103         int                     cm_aen_abort;
  104         void                    (* cm_complete)(struct mfi_command *cm);
  105         void                    *cm_private;
  106         int                     cm_index;
  107         int                     cm_error;
  108 };
  109 
  110 struct mfi_disk {
  111         TAILQ_ENTRY(mfi_disk)   ld_link;
  112         device_t        ld_dev;
  113         int             ld_id;
  114         int             ld_unit;
  115         struct mfi_softc *ld_controller;
  116         struct mfi_ld_info      *ld_info;
  117         struct disk     *ld_disk;
  118         int             ld_flags;
  119 #define MFI_DISK_FLAGS_OPEN     0x01
  120 #define MFI_DISK_FLAGS_DISABLED 0x02
  121 };
  122 
  123 struct mfi_aen {
  124         TAILQ_ENTRY(mfi_aen) aen_link;
  125         struct proc                     *p;
  126 };
  127 
  128 struct mfi_softc {
  129         device_t                        mfi_dev;
  130         int                             mfi_flags;
  131 #define MFI_FLAGS_SG64          (1<<0)
  132 #define MFI_FLAGS_QFRZN         (1<<1)
  133 #define MFI_FLAGS_OPEN          (1<<2)
  134 #define MFI_FLAGS_STOP          (1<<3)
  135 #define MFI_FLAGS_1064R         (1<<4)
  136 #define MFI_FLAGS_1078          (1<<5)
  137 #define MFI_FLAGS_GEN2          (1<<6)
  138 
  139         struct mfi_hwcomms              *mfi_comms;
  140         TAILQ_HEAD(,mfi_command)        mfi_free;
  141         TAILQ_HEAD(,mfi_command)        mfi_ready;
  142         TAILQ_HEAD(,mfi_command)        mfi_busy;
  143         struct bio_queue_head           mfi_bioq;
  144         struct mfi_qstat                mfi_qstat[MFIQ_COUNT];
  145 
  146         struct resource                 *mfi_regs_resource;
  147         bus_space_handle_t              mfi_bhandle;
  148         bus_space_tag_t                 mfi_btag;
  149         int                             mfi_regs_rid;
  150 
  151         bus_dma_tag_t                   mfi_parent_dmat;
  152         bus_dma_tag_t                   mfi_buffer_dmat;
  153 
  154         bus_dma_tag_t                   mfi_comms_dmat;
  155         bus_dmamap_t                    mfi_comms_dmamap;
  156         uint32_t                        mfi_comms_busaddr;
  157 
  158         bus_dma_tag_t                   mfi_frames_dmat;
  159         bus_dmamap_t                    mfi_frames_dmamap;
  160         uint32_t                        mfi_frames_busaddr;
  161         union mfi_frame                 *mfi_frames;
  162 
  163         TAILQ_HEAD(,mfi_aen)            mfi_aen_pids;
  164         struct mfi_command              *mfi_aen_cm;
  165         uint32_t                        mfi_aen_triggered;
  166         uint32_t                        mfi_poll_waiting;
  167         struct selinfo                  mfi_select;
  168         int                             mfi_delete_busy_volumes;
  169         int                             mfi_keep_deleted_volumes;
  170         int                             mfi_detaching;
  171 
  172         bus_dma_tag_t                   mfi_sense_dmat;
  173         bus_dmamap_t                    mfi_sense_dmamap;
  174         uint32_t                        mfi_sense_busaddr;
  175         struct mfi_sense                *mfi_sense;
  176 
  177         struct resource                 *mfi_irq;
  178         void                            *mfi_intr;
  179         int                             mfi_irq_rid;
  180 
  181         struct intr_config_hook         mfi_ich;
  182         eventhandler_tag                eh;
  183 
  184         /*
  185          * Allocation for the command array.  Used as an indexable array to
  186          * recover completed commands.
  187          */
  188         struct mfi_command              *mfi_commands;
  189         /*
  190          * How many commands were actually allocated
  191          */
  192         int                             mfi_total_cmds;
  193         /*
  194          * How many commands the firmware can handle.  Also how big the reply
  195          * queue is, minus 1.
  196          */
  197         int                             mfi_max_fw_cmds;
  198         /*
  199          * How many S/G elements we'll ever actually use 
  200          */
  201         int                             mfi_max_sge;
  202         /*
  203          * How many bytes a compound frame is, including all of the extra frames
  204          * that are used for S/G elements.
  205          */
  206         int                             mfi_cmd_size;
  207         /*
  208          * How large an S/G element is.  Used to calculate the number of single
  209          * frames in a command.
  210          */
  211         int                             mfi_sge_size;
  212         /*
  213          * Max number of sectors that the firmware allows
  214          */
  215         uint32_t                        mfi_max_io;
  216 
  217         TAILQ_HEAD(,mfi_disk)           mfi_ld_tqh;
  218         eventhandler_tag                mfi_eh;
  219         struct cdev                     *mfi_cdev;
  220 
  221         TAILQ_HEAD(, ccb_hdr)           mfi_cam_ccbq;
  222         struct mfi_command *            (* mfi_cam_start)(void *);
  223         struct callout                  mfi_watchdog_callout;
  224         struct mtx                      mfi_io_lock;
  225         struct sx                       mfi_config_lock;
  226 
  227         /* Controller type specific interfaces */
  228         void    (*mfi_enable_intr)(struct mfi_softc *sc);
  229         int32_t (*mfi_read_fw_status)(struct mfi_softc *sc);
  230         int     (*mfi_check_clear_intr)(struct mfi_softc *sc);
  231         void    (*mfi_issue_cmd)(struct mfi_softc *sc,uint32_t bus_add,uint32_t frame_cnt);
  232 };
  233 
  234 extern int mfi_attach(struct mfi_softc *);
  235 extern void mfi_free(struct mfi_softc *);
  236 extern int mfi_shutdown(struct mfi_softc *);
  237 extern void mfi_startio(struct mfi_softc *);
  238 extern void mfi_disk_complete(struct bio *);
  239 extern int mfi_disk_disable(struct mfi_disk *);
  240 extern void mfi_disk_enable(struct mfi_disk *);
  241 extern int mfi_dump_blocks(struct mfi_softc *, int id, uint64_t, void *, int);
  242 
  243 #define MFIQ_ADD(sc, qname)                                     \
  244         do {                                                    \
  245                 struct mfi_qstat *qs;                           \
  246                                                                 \
  247                 qs = &(sc)->mfi_qstat[qname];                   \
  248                 qs->q_length++;                                 \
  249                 if (qs->q_length > qs->q_max)                   \
  250                         qs->q_max = qs->q_length;               \
  251         } while (0)
  252 
  253 #define MFIQ_REMOVE(sc, qname)  (sc)->mfi_qstat[qname].q_length--
  254 
  255 #define MFIQ_INIT(sc, qname)                                    \
  256         do {                                                    \
  257                 sc->mfi_qstat[qname].q_length = 0;              \
  258                 sc->mfi_qstat[qname].q_max = 0;                 \
  259         } while (0)
  260 
  261 #define MFIQ_COMMAND_QUEUE(name, index)                                 \
  262         static __inline void                                            \
  263         mfi_initq_ ## name (struct mfi_softc *sc)                       \
  264         {                                                               \
  265                 TAILQ_INIT(&sc->mfi_ ## name);                          \
  266                 MFIQ_INIT(sc, index);                                   \
  267         }                                                               \
  268         static __inline void                                            \
  269         mfi_enqueue_ ## name (struct mfi_command *cm)                   \
  270         {                                                               \
  271                 if ((cm->cm_flags & MFI_ON_MFIQ_MASK) != 0) {           \
  272                         printf("command %p is on another queue, "       \
  273                             "flags = %#x\n", cm, cm->cm_flags);         \
  274                         panic("command is on another queue");           \
  275                 }                                                       \
  276                 TAILQ_INSERT_TAIL(&cm->cm_sc->mfi_ ## name, cm, cm_link); \
  277                 cm->cm_flags |= MFI_ON_ ## index;                       \
  278                 MFIQ_ADD(cm->cm_sc, index);                             \
  279         }                                                               \
  280         static __inline void                                            \
  281         mfi_requeue_ ## name (struct mfi_command *cm)                   \
  282         {                                                               \
  283                 if ((cm->cm_flags & MFI_ON_MFIQ_MASK) != 0) {           \
  284                         printf("command %p is on another queue, "       \
  285                             "flags = %#x\n", cm, cm->cm_flags);         \
  286                         panic("command is on another queue");           \
  287                 }                                                       \
  288                 TAILQ_INSERT_HEAD(&cm->cm_sc->mfi_ ## name, cm, cm_link); \
  289                 cm->cm_flags |= MFI_ON_ ## index;                       \
  290                 MFIQ_ADD(cm->cm_sc, index);                             \
  291         }                                                               \
  292         static __inline struct mfi_command *                            \
  293         mfi_dequeue_ ## name (struct mfi_softc *sc)                     \
  294         {                                                               \
  295                 struct mfi_command *cm;                                 \
  296                                                                         \
  297                 if ((cm = TAILQ_FIRST(&sc->mfi_ ## name)) != NULL) {    \
  298                         if ((cm->cm_flags & MFI_ON_ ## index) == 0) {   \
  299                                 printf("command %p not in queue, "      \
  300                                     "flags = %#x, bit = %#x\n", cm,     \
  301                                     cm->cm_flags, MFI_ON_ ## index);    \
  302                                 panic("command not in queue");          \
  303                         }                                               \
  304                         TAILQ_REMOVE(&sc->mfi_ ## name, cm, cm_link);   \
  305                         cm->cm_flags &= ~MFI_ON_ ## index;              \
  306                         MFIQ_REMOVE(sc, index);                         \
  307                 }                                                       \
  308                 return (cm);                                            \
  309         }                                                               \
  310         static __inline void                                            \
  311         mfi_remove_ ## name (struct mfi_command *cm)                    \
  312         {                                                               \
  313                 if ((cm->cm_flags & MFI_ON_ ## index) == 0) {           \
  314                         printf("command %p not in queue, flags = %#x, " \
  315                             "bit = %#x\n", cm, cm->cm_flags,            \
  316                             MFI_ON_ ## index);                          \
  317                         panic("command not in queue");                  \
  318                 }                                                       \
  319                 TAILQ_REMOVE(&cm->cm_sc->mfi_ ## name, cm, cm_link);    \
  320                 cm->cm_flags &= ~MFI_ON_ ## index;                      \
  321                 MFIQ_REMOVE(cm->cm_sc, index);                          \
  322         }                                                               \
  323 struct hack
  324 
  325 MFIQ_COMMAND_QUEUE(free, MFIQ_FREE);
  326 MFIQ_COMMAND_QUEUE(ready, MFIQ_READY);
  327 MFIQ_COMMAND_QUEUE(busy, MFIQ_BUSY);
  328 
  329 static __inline void
  330 mfi_initq_bio(struct mfi_softc *sc)
  331 {
  332         bioq_init(&sc->mfi_bioq);
  333         MFIQ_INIT(sc, MFIQ_BIO);
  334 }
  335 
  336 static __inline void
  337 mfi_enqueue_bio(struct mfi_softc *sc, struct bio *bp)
  338 {
  339         bioq_insert_tail(&sc->mfi_bioq, bp);
  340         MFIQ_ADD(sc, MFIQ_BIO);
  341 }
  342 
  343 static __inline struct bio *
  344 mfi_dequeue_bio(struct mfi_softc *sc)
  345 {
  346         struct bio *bp;
  347 
  348         if ((bp = bioq_first(&sc->mfi_bioq)) != NULL) {
  349                 bioq_remove(&sc->mfi_bioq, bp);
  350                 MFIQ_REMOVE(sc, MFIQ_BIO);
  351         }
  352         return (bp);
  353 }
  354 
  355 static __inline void
  356 mfi_print_sense(struct mfi_softc *sc, void *sense)
  357 {
  358         int error, key, asc, ascq;
  359 
  360         scsi_extract_sense((struct scsi_sense_data *)sense,
  361             &error, &key, &asc, &ascq);
  362         device_printf(sc->mfi_dev, "sense error %d, sense_key %d, "
  363             "asc %d, ascq %d\n", error, key, asc, ascq);
  364 }
  365 
  366 
  367 #define MFI_WRITE4(sc, reg, val)        bus_space_write_4((sc)->mfi_btag, \
  368         sc->mfi_bhandle, (reg), (val))
  369 #define MFI_READ4(sc, reg)              bus_space_read_4((sc)->mfi_btag, \
  370         (sc)->mfi_bhandle, (reg))
  371 #define MFI_WRITE2(sc, reg, val)        bus_space_write_2((sc)->mfi_btag, \
  372         sc->mfi_bhandle, (reg), (val))
  373 #define MFI_READ2(sc, reg)              bus_space_read_2((sc)->mfi_btag, \
  374         (sc)->mfi_bhandle, (reg))
  375 #define MFI_WRITE1(sc, reg, val)        bus_space_write_1((sc)->mfi_btag, \
  376         sc->mfi_bhandle, (reg), (val))
  377 #define MFI_READ1(sc, reg)              bus_space_read_1((sc)->mfi_btag, \
  378         (sc)->mfi_bhandle, (reg))
  379 
  380 MALLOC_DECLARE(M_MFIBUF);
  381 SYSCTL_DECL(_hw_mfi);
  382 
  383 #define MFI_CMD_TIMEOUT 30
  384 #define MFI_MAXPHYS (128 * 1024)
  385 
  386 #ifdef MFI_DEBUG
  387 extern void mfi_print_cmd(struct mfi_command *cm);
  388 extern void mfi_dump_cmds(struct mfi_softc *sc);
  389 extern void mfi_validate_sg(struct mfi_softc *, struct mfi_command *, const char *, int );
  390 #define MFI_PRINT_CMD(cm)       mfi_print_cmd(cm)
  391 #define MFI_DUMP_CMDS(sc)       mfi_dump_cmds(sc)
  392 #define MFI_VALIDATE_CMD(sc, cm) mfi_validate_sg(sc, cm, __FUNCTION__, __LINE__)
  393 #else
  394 #define MFI_PRINT_CMD(cm)
  395 #define MFI_DUMP_CMDS(sc)
  396 #define MFI_VALIDATE_CMD(sc, cm)
  397 #endif
  398 
  399 extern void mfi_release_command(struct mfi_command *cm);
  400 
  401 #endif /* _MFIVAR_H */

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