The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/icpvar.h

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    1 /*      $NetBSD: icpvar.h,v 1.3 2003/06/13 05:57:31 thorpej Exp $       */
    2 
    3 /*-
    4  * Copyright (c) 2002, 2003 The NetBSD Foundation, Inc.
    5  * All rights reserved.
    6  *
    7  * This code is derived from software contributed to The NetBSD Foundation
    8  * by Andrew Doran, and by Jason R. Thorpe of Wasabi Systems, Inc.
    9  *
   10  * Redistribution and use in source and binary forms, with or without
   11  * modification, are permitted provided that the following conditions
   12  * are met:
   13  * 1. Redistributions of source code must retain the above copyright
   14  *    notice, this list of conditions and the following disclaimer.
   15  * 2. Redistributions in binary form must reproduce the above copyright
   16  *    notice, this list of conditions and the following disclaimer in the
   17  *    documentation and/or other materials provided with the distribution.
   18  * 3. All advertising materials mentioning features or use of this software
   19  *    must display the following acknowledgement:
   20  *        This product includes software developed by the NetBSD
   21  *        Foundation, Inc. and its contributors.
   22  * 4. Neither the name of The NetBSD Foundation nor the names of its
   23  *    contributors may be used to endorse or promote products derived
   24  *    from this software without specific prior written permission.
   25  *
   26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   36  * POSSIBILITY OF SUCH DAMAGE.
   37  */
   38 
   39 #ifndef _IC_ICPVAR_H_
   40 #define _IC_ICPVAR_H_
   41 
   42 #include "locators.h"
   43 
   44 #include <dev/ic/icp_ioctl.h>
   45 
   46 /*
   47  * Miscellaneous constants.
   48  */
   49 #define ICP_RETRIES             6
   50 #define ICP_WATCHDOG_FREQ       5
   51 #define ICP_BUSY_WAIT_MS        2500
   52 #define ICP_MAX_XFER            65536           
   53 #define ICP_UCMD_SCRATCH_SIZE   4096
   54 #define ICP_SCRATCH_SIZE        (8192 + ICP_UCMD_SCRATCH_SIZE)
   55 #define ICP_SCRATCH_SENSE \
   56     (ICP_SCRATCH_SIZE - sizeof(struct scsipi_sense_data) * ICP_NCCBS)
   57 #define ICP_SCRATCH_UCMD        (ICP_SCRATCH_SENSE - ICP_UCMD_SCRATCH_SIZE)
   58 
   59 #define ICP_NCCBS               ICP_MAX_CMDS
   60 #define ICP_NCCB_RESERVE        4
   61 
   62 /*
   63  * Context structure for interrupt service.
   64  */
   65 struct icp_intr_ctx {
   66         u_int32_t       info;
   67         u_int32_t       info2;
   68         u_int16_t       cmd_status;
   69         u_int16_t       service;
   70         u_int8_t        istatus;
   71 };
   72 
   73 /*
   74  * Command control block.
   75  */
   76 struct icp_ccb {
   77         SIMPLEQ_ENTRY(icp_ccb) ic_chain;
   78         u_int           ic_service;
   79         u_int           ic_flags;
   80         u_int           ic_status;
   81         u_int           ic_ident;
   82         u_int           ic_nsgent;
   83         u_int           ic_cmdlen;
   84         u_int           ic_xfer_size;
   85         bus_dmamap_t    ic_xfer_map;
   86         struct icp_sg   *ic_sg;
   87         struct device   *ic_dv;
   88         void            *ic_context;
   89         void            (*ic_intr)(struct icp_ccb *);
   90         struct icp_cmd  ic_cmd;
   91 };
   92 #define IC_XFER_IN      0x01    /* Map describes inbound xfer */
   93 #define IC_XFER_OUT     0x02    /* Map describes outbound xfer */
   94 #define IC_WAITING      0x04    /* We have waiters */
   95 #define IC_COMPLETE     0x08    /* Command completed */
   96 #define IC_ALLOCED      0x10    /* CCB allocated */
   97 #define IC_UCMD         0x20    /* user ioctl */
   98 
   99 /*
  100  * Logical drive information.
  101  */
  102 struct icp_cachedrv {
  103         u_int           cd_size;
  104         u_int           cd_type;
  105 };
  106 
  107 /*
  108  * Call-backs into the service back-ends (ld for cache service,
  109  * icpsp for raw service).
  110  */
  111 struct icp_servicecb {
  112         void    (*iscb_openings)(struct device *, int);
  113 };
  114 
  115 /*
  116  * Per-controller context.
  117  */
  118 struct icp_softc {
  119         struct device           icp_dv;
  120         void                    *icp_ih;
  121         bus_dma_tag_t           icp_dmat;
  122         bus_space_tag_t         icp_dpmemt;
  123         bus_space_handle_t      icp_dpmemh;
  124         bus_addr_t              icp_dpmembase;
  125         bus_space_tag_t         icp_iot;
  126         bus_space_handle_t      icp_ioh;
  127         bus_addr_t              icp_iobase;
  128 
  129         int                     icp_class;
  130         u_int16_t               icp_fw_vers;
  131         u_int16_t               icp_ic_all_size;
  132         u_int8_t                icp_bus_cnt;
  133         u_int8_t                icp_bus_id[ICP_MAXBUS];
  134         struct icp_cachedrv     icp_cdr[ICP_MAX_HDRIVES];
  135         const struct icp_servicecb *icp_servicecb[ICP_MAX_HDRIVES + ICP_MAXBUS];
  136         struct device           *icp_children[ICP_MAX_HDRIVES + ICP_MAXBUS];
  137         int                     icp_ndevs;
  138         int                     icp_openings;
  139         int                     icp_features;
  140         int                     icp_nchan;
  141 
  142         u_int32_t               icp_info;
  143         u_int32_t               icp_info2;
  144         u_int16_t               icp_status;
  145         u_int16_t               icp_service;
  146 
  147         bus_dmamap_t            icp_scr_dmamap;
  148         bus_dma_segment_t       icp_scr_seg[1];
  149         caddr_t                 icp_scr;
  150 
  151         struct icp_ccb          *icp_ccbs;
  152         u_int                   icp_nccbs;
  153         u_int                   icp_flags;
  154         u_int                   icp_qfreeze;
  155         u_int                   icp_running;
  156         SIMPLEQ_HEAD(,icp_ccb)  icp_ccb_freelist;
  157         SIMPLEQ_HEAD(,icp_ccb)  icp_ccb_queue;
  158         SIMPLEQ_HEAD(,icp_ccb)  icp_ucmd_queue;
  159         struct callout          icp_wdog_callout;
  160 
  161         struct icp_ccb          *icp_ucmd_ccb;
  162 
  163         /* Temporary buffer for event data. */
  164         gdt_evt_data            icp_evt;
  165 
  166         void            (*icp_copy_cmd)(struct icp_softc *, struct icp_ccb *);
  167         u_int8_t        (*icp_get_status)(struct icp_softc *);
  168         void            (*icp_intr)(struct icp_softc *, struct icp_intr_ctx *);
  169         void            (*icp_release_event)(struct icp_softc *,
  170                                              struct icp_ccb *);
  171         void            (*icp_set_sema0)(struct icp_softc *);
  172         int             (*icp_test_busy)(struct icp_softc *);
  173 
  174         /*
  175          * This info is needed by the user ioctl interface needed to
  176          * support the ICP configuration tools.
  177          */
  178         int                     icp_pci_bus;
  179         int                     icp_pci_device;
  180         int                     icp_pci_device_id;
  181         int                     icp_pci_subdevice_id;
  182 };
  183 
  184 /* icp_features */
  185 #define ICP_FEAT_CACHESERVICE   0x01    /* cache service usable */
  186 #define ICP_FEAT_RAWSERVICE     0x02    /* raw service usable */
  187 
  188 /* icp_flags */
  189 #define ICP_F_WAIT_CCB          0x01    /* someone waiting for CCBs */
  190 #define ICP_F_WAIT_FREEZE       0x02    /* someone waiting for qfreeze */
  191 
  192 #define ICP_HAS_WORK(icp)                                               \
  193         (! SIMPLEQ_EMPTY(&(icp)->icp_ccb_queue) ||                      \
  194          ! SIMPLEQ_EMPTY(&(icp)->icp_ucmd_queue))
  195 
  196 #define ICP_STAT_INCR(icp, x)                                           \
  197 do {                                                                    \
  198         /* XXX Globals, for now. XXX */                                 \
  199         icp_stats. ## x ## _act++;                                      \
  200         if (icp_stats. ## x ## _act > icp_stats. ## x ## _max)          \
  201                 icp_stats. ## x ## _max = icp_stats. ## x ## _act;      \
  202 } while (/*CONSTCOND*/0)
  203 
  204 #define ICP_STAT_SET(icp, x, v)                                         \
  205 do {                                                                    \
  206         /* XXX Globals, for now. XXX */                                 \
  207         icp_stats. ## x ## _act = (v);                                  \
  208         if (icp_stats. ## x ## _act > icp_stats. ## x ## _max)          \
  209                 icp_stats. ## x ## _max = icp_stats. ## x ## _act;      \
  210 } while (/*CONSTCOND*/0)
  211 
  212 #define ICP_STAT_DECR(icp, x)                                           \
  213 do {                                                                    \
  214         /* XXX Globals, for now. XXX */                                 \
  215         icp_stats. ## x ## _act--;                                      \
  216 } while (/*CONSTCOND*/0)
  217 
  218 #define ICP_ISA         0x01
  219 #define ICP_EISA        0x02
  220 #define ICP_PCI         0x03
  221 #define ICP_PCINEW      0x04
  222 #define ICP_MPR         0x05
  223 #define ICP_CLASS_MASK  0x07
  224 #define ICP_FC          0x10
  225 #define ICP_CLASS(icp)  ((icp)->icp_class & ICP_CLASS_MASK)
  226 
  227 int     icp_init(struct icp_softc *, const char *);
  228 int     icp_intr(void *);
  229 
  230 extern int icp_count;
  231 extern gdt_statist_t icp_stats;
  232 
  233 /*
  234  * Consumer interface.
  235  */
  236 struct icp_attach_args {
  237         int             icpa_unit;
  238 };
  239 
  240 #define icpacf_unit     cf_loc[ICPCF_UNIT]
  241 
  242 #define ICPA_UNIT_SCSI  100
  243 
  244 struct icp_ccb  *icp_ccb_alloc(struct icp_softc *);
  245 struct icp_ccb  *icp_ccb_alloc_wait(struct icp_softc *);
  246 void    icp_ccb_enqueue(struct icp_softc *, struct icp_ccb *);
  247 void    icp_ccb_free(struct icp_softc *, struct icp_ccb *);
  248 int     icp_ccb_map(struct icp_softc *, struct icp_ccb *, void *, int, int);
  249 int     icp_ccb_poll(struct icp_softc *, struct icp_ccb *, int);
  250 void    icp_ccb_unmap(struct icp_softc *, struct icp_ccb *);
  251 int     icp_ccb_wait(struct icp_softc *, struct icp_ccb *, int);
  252 int     icp_ccb_wait_user(struct icp_softc *, struct icp_ccb *, int);
  253 int     icp_cmd(struct icp_softc *, u_int8_t, u_int16_t, u_int32_t, u_int32_t,
  254                 u_int32_t);
  255 int     icp_ucmd(struct icp_softc *, gdt_ucmd_t *);
  256 int     icp_freeze(struct icp_softc *);
  257 void    icp_unfreeze(struct icp_softc *);
  258 
  259 void    icp_rescan(struct icp_softc *, int);
  260 void    icp_rescan_all(struct icp_softc *);
  261 
  262 void    icp_register_servicecb(struct icp_softc *, int,
  263             const struct icp_servicecb *);
  264 
  265 gdt_evt_str *icp_store_event(struct icp_softc *, u_int16_t, u_int16_t,
  266             gdt_evt_data *);
  267 int     icp_read_event(struct icp_softc *, int, gdt_evt_str *);
  268 void    icp_readapp_event(struct icp_softc *, u_int8_t, gdt_evt_str *);
  269 void    icp_clear_events(struct icp_softc *);
  270 
  271 #endif  /* !_IC_ICPVAR_H_ */

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