The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/dev/hptrr/ldm.h

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    1 /*
    2  * Copyright (c) HighPoint Technologies, Inc.
    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  * $FreeBSD: stable/9/sys/dev/hptrr/ldm.h 176939 2008-03-08 18:06:48Z scottl $
   27  */
   28 #include <dev/hptrr/hptrr_config.h>
   29 /*
   30  * $Id: ldm.h,v 1.69 2007/11/22 07:31:55 gmm Exp $
   31  * Copyright (C) 2004-2005 HighPoint Technologies, Inc. All rights reserved.
   32  */
   33 #ifndef _HPT_LDM_H_
   34 #define _HPT_LDM_H_
   35 
   36 #define VERMAGIC_LDM 69
   37 
   38 #if defined(__cplusplus)
   39 extern "C" {
   40 #endif
   41 
   42 
   43 #define __hpt_set_ver(x, v1, v2, v3, v4, v5) x ## _R_ ## v1 ## _ ## v2 ## _ ## v3 ## _ ## v4 ## _ ## v5
   44 #define _hpt_set_ver(x, v1, v2, v3, v4, v5)  __hpt_set_ver(x, v1, v2, v3, v4, v5)
   45 #define hpt_set_ver(x)               _hpt_set_ver(x, VERMAGIC_OSM, VERMAGIC_HIM, VERMAGIC_LDM, VERMAGIC_ARRAY, MAX_MEMBERS)
   46 
   47 #define ldm_register_him        hpt_set_ver(ldm_register_him)
   48 #define ldm_register_vdev_class hpt_set_ver(ldm_register_vdev_class)
   49 #define ldm_alloc_cmds          hpt_set_ver(ldm_alloc_cmds)
   50 
   51 
   52 #ifndef HPT_INTERFACE_VERSION
   53 #define HPT_INTERFACE_VERSION 0x02000001
   54 #endif
   55 
   56 #define MAX_PARTITIONS_PER_DISK 4
   57 #if defined(__MAX_PARTITIONS_PER_DISK) && MAX_PARTITIONS_PER_DISK > __MAX_PARTITIONS_PER_DISK
   58 #error "Please redefine MAX_PARTITIONS_PER_DISK!!!"
   59 #endif
   60 
   61 #define MAX(a,b) (((a)>(b))?(a):(b))
   62 #define MIN(a,b) (((a)<(b))?(a):(b))
   63 
   64 
   65 typedef char check_HPT_TIME_is_unsigned[ (HPT_TIME)(-1) > 0 ? 1 : -1 ];
   66 
   67 #define hpt_time_after_eq(a, b) ((long)(a) - (long)(b) >= 0)
   68 #define hpt_time_after(a, b) ((long)(a) - (long)(b) > 0)
   69 
   70 
   71 
   72 struct freelist {
   73         int dma;
   74         HPT_UINT alignment;
   75         HPT_UINT count;
   76         HPT_UINT size;
   77         void * head;
   78         struct freelist *next;
   79 #if DBG
   80         char *tag;
   81         HPT_UINT reserved_count; 
   82         #define freelist_debug_tag(list, _tag) (list)->tag = _tag
   83 #else 
   84         #define freelist_debug_tag(list, _tag)
   85 #endif
   86 };
   87 
   88 
   89 void freelist_reserve(struct freelist *list, void *osext, HPT_UINT size, HPT_UINT count);
   90 
   91 void *freelist_get(struct freelist *);
   92 void freelist_put(struct freelist *, void *p);
   93 
   94 void freelist_reserve_dma(struct freelist *list, void *osext, HPT_UINT size, HPT_UINT alignment, HPT_UINT count);
   95 void *freelist_get_dma(struct freelist *, BUS_ADDRESS *busaddr);
   96 void freelist_put_dma(struct freelist *, void *p, BUS_ADDRESS busaddr);
   97 
   98 
   99 #define freelist_reserve_with_tag(list, osext, size, count) \
  100         do {\
  101                 freelist_debug_tag(list, #list  " at " __FILE__);\
  102                 freelist_reserve(list, osext, size, count);\
  103         }while(0)
  104 
  105 #define freelist_reserve_dma_with_tag(list, osext, size, alignment, count) \
  106         do {\
  107                 freelist_debug_tag(list, #list " at " __FILE__);\
  108                 freelist_reserve_dma(list, osext, size, alignment, count);\
  109         }while(0)
  110 
  111 struct lock_request {
  112         HPT_U64 start, end;
  113         struct lock_request *next;
  114         struct list_head waiters; /* blocked commands */
  115         struct tq_item callback;
  116         int lock_cc;
  117 };
  118 
  119 #define INIT_LOCK_REQUEST(req, _start, _end, _cb, _arg, _cc) \
  120         do {\
  121                 (req)->next = 0;\
  122                 (req)->start = _start;\
  123                 (req)->end = _end;\
  124                 INIT_TQ_ITEM(&(req)->callback, _cb, _arg);\
  125                 INIT_LIST_HEAD(&(req)->waiters);\
  126                 (req)->lock_cc = _cc;\
  127         } while (0)
  128 
  129 struct task_queue {
  130         struct tq_item *head, *tail;
  131 };
  132 
  133 #define TQ_EMPTY(tq) ((tq)->head==0)
  134 
  135 struct dmapool_order {
  136         HPT_UINT npages;
  137         struct tq_item wakeup_fn;
  138         struct dmapool_order *next;
  139 };
  140 
  141 struct dmapool_client {
  142         void * handle;
  143         HPT_UINT (*shrink)(void *handle, HPT_UINT npages);
  144         int (*resume)(void *handle);
  145         struct dmapool_client *next;
  146 };
  147 
  148 typedef struct _VBUS * PVBUS;
  149 typedef struct _VDEV * PVDEV;
  150 
  151 
  152 void dmapool_register_client(PVBUS vbus, struct dmapool_client *client);
  153 
  154 
  155 void dmapool_active(PVBUS vbus);
  156 
  157 /* return 0 if the request is immediately satisfied, non-zero otherwise. */
  158 int dmapool_make_order(PVBUS vbus, struct dmapool_order *order);
  159 
  160 
  161 void *dmapool_get_page(PVBUS vbus, BUS_ADDRESS *busaddr);
  162 void *dmapool_get_page_at(PVBUS vbus, void *p, BUS_ADDRESS *busaddr);
  163 void dmapool_put_page(PVBUS vbus, void *p, BUS_ADDRESS busaddr);
  164 void dmapool_init(PVBUS vbus);
  165 HPT_UINT dmapool_max_class_pages(PVBUS vbus);
  166 
  167 
  168 struct timer_call {
  169         HPT_U32 interval; /*microseconds*/
  170         HPT_TIME expire_time; /*microseconds*/
  171         void (*proc)(void * arg);
  172         void * arg;
  173         struct timer_call ** pprev;
  174         struct timer_call * next;
  175 };
  176 
  177 #define ldm_init_timer(timer) do { (timer)->next=0; (timer)->pprev=0; } while (0)
  178 
  179 #define INIT_TIMER_CALL(timer, _interval, _proc, _arg) \
  180         do { \
  181                 HPT_ASSERT((timer)->next==0 && (timer)->pprev==0);\
  182                 (timer)->interval = _interval;\
  183                 (timer)->proc = _proc;\
  184                 (timer)->arg = _arg;\
  185         } while(0)
  186 
  187 void ldm_request_timer(PVBUS vbus, struct timer_call * tc);
  188 void ldm_remove_timer(PVBUS vbus, struct timer_call * tc);
  189 void ldm_on_timer(PVBUS vbus);
  190 
  191 
  192 typedef struct _LDM_ADAPTER
  193 {
  194         struct _LDM_ADAPTER *next;
  195         HIM  *him;
  196         void *him_handle;
  197         PVBUS vbus;
  198         struct freelist freelist_dev;
  199         struct freelist freelist_plugged_dpc;
  200         HPT_BOOL master;
  201 }
  202 LDM_ADAPTER, *PLDM_ADAPTER;
  203 
  204 typedef struct _IOCTL_ARG
  205 {
  206         struct list_head link;
  207         PVBUS vbus;
  208         HPT_U32 dwIoControlCode;
  209         HPT_U32 nInBufferSize;
  210         HPT_U32 nOutBufferSize;
  211         void *  lpInBuffer;
  212         void *  lpOutBuffer;
  213         HPT_U32 *lpBytesReturned;
  214         void *  ioctl_cmnd;
  215         void (* done)(struct _IOCTL_ARG *);
  216         int     result; /* HPT_IOCTL_RESULT_ */
  217         struct tq_item dpc;
  218 } IOCTL_ARG;
  219 
  220 #define HPT_IOCTL_RESULT_OK          0
  221 #define HPT_IOCTL_RESULT_FAILED     (-1)
  222 #define HPT_IOCTL_RESULT_INVALID    (-2)
  223 #define HPT_IOCTL_RESULT_RETRY      (-3)
  224 #define HPT_IOCTL_RESULT_WRONG_VBUS (-4)
  225 
  226 void ldm_ioctl( PVBUS vbus,     IOCTL_ARG *IAPnt);
  227 HPT_U32 ldm_get_device_id(PVDEV vd); /* for ioctl */
  228 void ldm_set_rebuild_priority(PVBUS vbus, int priority);
  229 void ldm_set_autorebuild(PVBUS vbus, int enable);
  230 void ldm_set_spindown_disks_timeout(PVBUS vbus, HPT_U8 timeout);
  231 
  232 #ifndef __HPT_RAW_LBA
  233 #define __HPT_RAW_LBA HPT_RAW_LBA
  234 #endif
  235 
  236 #include <dev/hptrr/array.h>
  237 
  238 typedef struct hpt_raw_disk
  239 {
  240 #ifdef SUPPORT_ARRAY
  241         PRAW_PARTITION raw_part_list;
  242         __HPT_RAW_LBA max_available_capacity; 
  243         __HPT_RAW_LBA total_available_capacity;
  244 #endif
  245         __HPT_RAW_LBA real_capacity;
  246         __HPT_RAW_LBA head_position;
  247 
  248         HPT_U16 max_sectors_per_cmd;
  249         HPT_U8  max_queue_depth;
  250         HPT_U8  user_select_mode;
  251 
  252         HPT_UINT  uninitialized : 1;
  253         HPT_UINT  legacy_disk : 1;
  254         HPT_UINT  is_spare : 1;
  255         HPT_UINT  v3_format : 1;
  256         HPT_UINT  need_sync : 1;
  257         HPT_UINT  temp_spare : 1;
  258         HPT_UINT  need_check_array : 1;
  259         HPT_UINT  df_user_mode_set: 1;
  260 
  261         HPT_UINT  df_read_ahead_set: 1;
  262         HPT_UINT  enable_read_ahead : 1;
  263         HPT_UINT  df_write_cache_set: 1;
  264         HPT_UINT  enable_write_cache : 1;
  265         HPT_UINT  df_tcq_set: 1;
  266         HPT_UINT  enable_tcq : 1;
  267         HPT_UINT  df_ncq_set: 1;
  268         HPT_UINT  enable_ncq : 1;
  269 
  270         HIM  *                          him;
  271         int                             index;
  272         PLDM_ADAPTER            adapter;
  273         void *                          phy_dev;
  274         PIDENTIFY_DATA2         identify_data;
  275         char    model[40];
  276 
  277         struct tq_item reset_dpc;
  278         int reset_pending;
  279 
  280         struct tq_item fail_dpc;
  281         int fail_pending;
  282 }
  283 HPT_RAW_DISK, *PHPT_RAW_DISK;
  284 
  285 struct vdev_class
  286 {
  287         struct vdev_class *next;
  288 
  289         HPT_U8   __type;
  290         HPT_U8   stripped;        /* RAID0,3,5,6 */
  291         HPT_U8   redundancy;      /* RAID1-1, RAID3/5-1, RAID6-2 */
  292         HPT_U8   must_init;       /* RAID3,5,6 */
  293         HPT_U8   docache;
  294 
  295         HPT_UINT vbus_ext_size;
  296         HPT_UINT vbus_ext_offset; /* used by LDM */
  297         HPT_UINT dev_ext_size;
  298         HPT_UINT cmd_ext_size;
  299 
  300         
  301         void (*get_mem_info)(PVBUS vbus, void *osext, int phydev_count);
  302         void (*queue_cmd)(PCOMMAND cmd);
  303         void (*member_failed)(struct _VDEV * vd); 
  304 
  305         
  306         void (*initialize)(PVBUS vbus);
  307         void (*release)(PVBUS vbus); 
  308         int  (*add)(PVDEV vd); 
  309         void (*remove)(PVDEV vd); 
  310         void (*reset)(PVDEV vd); 
  311         void (*sync_stamp)(PVDEV vd);
  312         int  (*support_type)(int type);
  313 };
  314 
  315 
  316 #define VDEV_CLASS_CONSTRUCTOR(type, prefix) { \
  317         0, \
  318         type, \
  319         prefix ## _stripped, \
  320         prefix ## _redundancy, \
  321         prefix ## _must_init, \
  322         0, \
  323         prefix ## _vbus_ext_size, \
  324         0, \
  325         prefix ## _dev_ext_size, \
  326         prefix ## _cmd_ext_size, \
  327         prefix ## _get_mem_info, \
  328         prefix ## _queue_cmd, \
  329         prefix ## _member_failed, \
  330         prefix ## _initialize, \
  331         prefix ## _release, \
  332         prefix ## _add, \
  333         prefix ## _remove, \
  334         prefix ## _reset, \
  335         prefix ## _sync_stamp, \
  336         0 \
  337 }
  338 
  339 #define VD_RAW       1
  340 #define VD_PARTITION 4
  341 
  342 #define mIsArray(vdev_type) ((vdev_type)>VD_PARTITION)
  343 
  344 #define VD_RAID0     5
  345 #define VD_RAID1     6
  346 #define VD_JBOD      7
  347 #define VD_RAID5     8
  348 #define VD_RAID6     9
  349 #define VD_RAID3     10
  350 #define VD_RAID4     11
  351 #define VD_RAID1E    12
  352 
  353 #define MAX_VD_TYPE_ID  12
  354 
  355 struct vdev_class *ldm_find_vdev_class(HPT_U8 type);
  356 
  357 typedef struct _VDEV {
  358         PVBUS vbus;
  359         struct vdev_class *Class;
  360         HPT_U8 type;
  361         PVDEV parent;
  362         void * ext;
  363         HPT_U64 capacity;
  364         int     target_id;
  365         HPT_UINT cmds_per_request;
  366 
  367         union {
  368 #ifdef SUPPORT_ARRAY
  369                 HPT_ARRAY array;
  370                 HPT_PARTITION partition;
  371 #endif
  372                 HPT_RAW_DISK raw;
  373         } u;
  374 
  375         HPT_U8 vf_online : 1;
  376         HPT_U8 vf_bootmark : 1;
  377         HPT_U8 vf_bootable : 1;
  378         HPT_U8 vf_resetting: 1;
  379         HPT_U8 vf_quiesced: 1;
  380         HPT_U8 vf_clslock: 1;
  381 
  382         HPT_U8 cache_policy; /* see CACHE_POLICY_* */
  383 
  384         HPT_UINT cq_len;
  385         HPT_UINT cmds_sent;
  386 
  387         struct list_head link;
  388         struct list_head cq_wait_send;
  389         struct list_head cq_sent;
  390 
  391         int cq_priority;
  392         struct list_head cq_wait_lock;
  393         struct lock_request *locks_granted;
  394         struct lock_request *locks_wait;
  395         HPT_U32 ioctl_id; 
  396         void * cc_ext;
  397 }
  398 VDEV;
  399 
  400 #define CACHE_POLICY_NONE 0
  401 #define CACHE_POLICY_WRITE_THROUGH 1
  402 #define CACHE_POLICY_WRITE_BACK 2
  403 
  404 
  405 extern HIM *him_list;
  406 
  407 
  408 void ldm_register_him(PHIM him);
  409 
  410 
  411 void ldm_register_vdev_class(struct vdev_class *Class);
  412 
  413 
  414 HPT_BOOL ldm_register_adapter(PLDM_ADAPTER adapter);
  415 
  416 
  417 int init_config(void);
  418 
  419 HPT_UINT ldm_get_vbus_size(void);
  420 
  421 
  422 void ldm_create_vbus(PVBUS vbus, void *osext);
  423 
  424 
  425 void ldm_get_mem_info(PVBUS vbus, void *osext);
  426 
  427 
  428 void *ldm_get_vbus_ext(PVBUS vbus, struct vdev_class *Class);
  429 
  430 
  431 PVBUS ldm_get_next_vbus(PVBUS vbus, void **posext);
  432 
  433 #define ldm_for_each_vbus(vbus, vbus_ext) \
  434         for (vbus = ldm_get_next_vbus(0, (void **)(void *)&vbus_ext); vbus; \
  435                 vbus = ldm_get_next_vbus(vbus, (void **)(void *)&vbus_ext))
  436 
  437 
  438 void ldm_initialize_vbus_async(PVBUS vbus, PLDM_ADAPTER master_adapter, void (*done)(void *osext));
  439 
  440 /* ldm_initialize_vbus is deprecated since it will hold the CPU too long. */
  441 #define ldm_initialize_vbus(vbus, adapter) ldm_initialize_vbus_async(vbus, adapter, 0)
  442 
  443 
  444 void ldm_release_vbus(PVBUS vbus);
  445 
  446 PVDEV ldm_create_vdev(PVBUS vbus, HPT_U8 type);
  447 void ldm_release_vdev(PVDEV vd);
  448 
  449 PVDEV ldm_find_target(PVBUS vbus, int id);
  450 PVDEV ldm_find_stamp(PVBUS vbus, HPT_U32 stamp, int seq);
  451 
  452 
  453 PCOMMAND ldm_alloc_cmds(PVBUS vbus, HPT_UINT cnt);
  454 void ldm_free_cmds(PCOMMAND cmd);
  455 
  456 HPT_UINT ldm_get_cmd_size(void);
  457 PCOMMAND ldm_alloc_cmds_from_list(PVBUS vbus, struct freelist *list, HPT_UINT cnt);
  458 void ldm_free_cmds_to_list(struct freelist *list, PCOMMAND cmd);
  459 
  460 
  461 PCOMMAND __ldm_alloc_cmd(struct freelist *list);
  462 
  463 #ifdef OS_SUPPORT_TASK
  464 #define CMD_SET_PRIORITY(cmd, pri) cmd->priority = (pri)
  465 #else 
  466 #define CMD_SET_PRIORITY(cmd, pri)
  467 #endif
  468 
  469 
  470 #define CMD_GROUP_GET(grp, cmd) \
  471         do {\
  472                 grp->grplist->count++;\
  473                 cmd = __ldm_alloc_cmd(grp->grplist);\
  474                 cmd->vbus = grp->vbus;\
  475                 cmd->grplist = grp->grplist;\
  476                 CMD_SET_PRIORITY(cmd, grp->priority);\
  477         } while(0)
  478 
  479 #define CMD_GROUP_PUT(grp, cmd) \
  480         do {\
  481                 freelist_put(grp->grplist, cmd);\
  482                 grp->grplist->count--;\
  483         } while (0)
  484 
  485 
  486 
  487 
  488 void ldm_queue_cmd(PCOMMAND cmd);
  489 void vdev_queue_cmd(PCOMMAND cmd);
  490 void ldm_finish_cmd(PCOMMAND cmd);
  491 
  492 
  493 int  ldm_acquire_lock(PVDEV vd, struct lock_request *req);
  494 void ldm_release_lock(PVDEV vd, struct lock_request *req);
  495 
  496 void ldm_queue_task(struct task_queue *tq, struct tq_item *t);
  497 void ldm_queue_vbus_dpc(PVBUS vbus, struct tq_item *t);
  498 
  499 HPT_BOOL ldm_intr(PVBUS vbus);
  500 void ldm_run(PVBUS vbus);
  501 int ldm_idle(PVBUS vbus);
  502 
  503 
  504 int ldm_reset_vbus(PVBUS vbus);
  505 
  506 
  507 void ldm_suspend(PVBUS vbus);
  508 void ldm_resume(PVBUS vbus);
  509 void ldm_shutdown(PVBUS vbus);/*shutdown all the controllers*/
  510 
  511 
  512 #define HIM_EVENT_DEVICE_REMOVED 1
  513 #define HIM_EVENT_DEVICE_PLUGGED 2
  514 #define HIM_EVENT_DEVICE_ERROR   3
  515 #define HIM_EVENT_RESET_REQUIRED 4
  516 #define HIM_EVENT_QUIESCE_DEVICE 5
  517 #define HIM_EVENT_UNQUIESCE_DEVICE 6
  518 #define HIM_EVENT_CONFIG_CHANGED 7
  519 
  520 void ldm_event_notify(HPT_U32 event, void *arg1, void *arg2);
  521 
  522 void log_sector_repair(PVDEV vd, int success, HPT_LBA lba, HPT_U16 nsectors);
  523 
  524 void ldm_register_device(PVDEV vd);
  525 void ldm_unregister_device(PVDEV vd);
  526 
  527 PVBUS him_handle_to_vbus(void * him_handle);
  528 void ldm_ide_fixstring (HPT_U8 *s, const int bytecount);
  529 #if defined(__cplusplus)
  530 }
  531 #endif
  532 #endif

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