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/i2o/iopvar.h

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    1 /*      $NetBSD: iopvar.h,v 1.13 2003/12/09 19:43:54 ad Exp $   */
    2 
    3 /*-
    4  * Copyright (c) 2000, 2001, 2002 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.
    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 _I2O_IOPVAR_H_
   40 #define _I2O_IOPVAR_H_
   41 
   42 #include "locators.h"
   43 
   44 /*
   45  * Transfer descriptor.
   46  */
   47 struct iop_xfer {
   48         bus_dmamap_t    ix_map;
   49         u_int           ix_size;
   50         u_int           ix_flags;
   51 };
   52 #define IX_IN                   0x0001  /* Data transfer from IOP */
   53 #define IX_OUT                  0x0002  /* Data transfer to IOP */
   54 
   55 /*
   56  * Message wrapper.
   57  */
   58 struct iop_msg {
   59         SLIST_ENTRY(iop_msg)    im_chain;       /* Next free message */
   60         u_int                   im_flags;       /* Control flags */
   61         u_int                   im_tctx;        /* Transaction context */
   62         void                    *im_dvcontext;  /* Un*x device context */
   63         struct i2o_reply        *im_rb;         /* Reply buffer */
   64         u_int                   im_reqstatus;   /* Status from reply */
   65         u_int                   im_detstatus;   /* Detailed status code */ 
   66         struct iop_xfer         im_xfer[IOP_MAX_MSG_XFERS];
   67 };
   68 #define IM_SYSMASK              0x00ff
   69 #define IM_REPLIED              0x0001  /* Message has been replied to */
   70 #define IM_ALLOCED              0x0002  /* This message wrapper is allocated */
   71 #define IM_SGLOFFADJ            0x0004  /* S/G list offset adjusted */
   72 #define IM_FAIL                 0x0008  /* Transaction error returned */        
   73 
   74 #define IM_USERMASK             0xff00
   75 #define IM_WAIT                 0x0100  /* Wait (sleep) for completion */
   76 #define IM_POLL                 0x0200  /* Wait (poll) for completion */
   77 #define IM_NOSTATUS             0x0400  /* Don't check status if waiting */
   78 #define IM_POLL_INTR            0x0800  /* Do send interrupt when polling */
   79 
   80 struct iop_initiator {
   81         LIST_ENTRY(iop_initiator) ii_list;
   82         LIST_ENTRY(iop_initiator) ii_hash;
   83 
   84         void    (*ii_intr)(struct device *, struct iop_msg *, void *);
   85         int     (*ii_reconfig)(struct device *);
   86         void    (*ii_adjqparam)(struct device *, int);
   87 
   88         struct  device *ii_dv;
   89         int     ii_flags;
   90         int     ii_ictx;                /* Initiator context */
   91         int     ii_tid;
   92 };
   93 #define II_NOTCTX       0x0001  /* No transaction context */
   94 #define II_CONFIGURED   0x0002  /* Already configured */
   95 #define II_UTILITY      0x0004  /* Utility initiator (not a real device) */
   96 
   97 #define IOP_ICTX        0
   98 #define IOP_INIT_CODE   0x80
   99 
  100 /*
  101  * Parameter group op (for async parameter retrievals).
  102  */
  103 struct iop_pgop {
  104         struct  i2o_param_op_list_header olh;
  105         struct  i2o_param_op_all_template oat;
  106 } __attribute__ ((__packed__));
  107 
  108 /*
  109  * Per-IOP context.
  110  */
  111 struct iop_softc {
  112         struct device   sc_dv;          /* Generic device data */
  113         bus_space_handle_t sc_ioh;      /* Bus space handle */
  114         bus_space_tag_t sc_iot;         /* Bus space tag */
  115         bus_dma_tag_t   sc_dmat;        /* Bus DMA tag */
  116         bus_space_handle_t sc_msg_ioh;  /* Message queue bus space handle */
  117         bus_space_tag_t sc_msg_iot;     /* Message queue bus space tag */
  118         void            *sc_ih;         /* Interrupt handler cookie */
  119 
  120         struct iop_msg  *sc_ims;        /* Message wrappers */
  121         SLIST_HEAD(, iop_msg) sc_im_freelist; /* Free wrapper list */
  122 
  123         bus_dmamap_t    sc_rep_dmamap;  /* Reply frames DMA map */
  124         int             sc_rep_size;    /* Reply frames size */
  125         bus_addr_t      sc_rep_phys;    /* Reply frames PA */
  126         caddr_t         sc_rep;         /* Reply frames VA */
  127 
  128         int             sc_maxib;       /* Max inbound (-> IOP) queue depth */
  129         int             sc_maxob;       /* Max outbound (<- IOP) queue depth */
  130         int             sc_curib;       /* Current inbound queue depth */
  131         int             sc_framesize;   /* Max msg frame size in bytes */
  132 
  133         struct i2o_hrt  *sc_hrt;        /* Hardware resource table */
  134         struct iop_tidmap *sc_tidmap;   /* TID map (per-LCT-entry flags) */
  135         struct i2o_lct  *sc_lct;        /* Logical configuration table */
  136         int             sc_nlctent;     /* Number of LCT entries */
  137         int             sc_flags;       /* IOP-wide flags */
  138         u_int32_t       sc_chgind;      /* Configuration change indicator */
  139         struct lock     sc_conflock;    /* Configuration lock */
  140         struct proc     *sc_reconf_proc;/* Auto reconfiguration process */
  141         LIST_HEAD(, iop_initiator) sc_iilist;/* Initiator list */
  142         int             sc_nii;         /* Total number of initiators */
  143         int             sc_nuii;        /* Number of utility initiators */
  144 
  145         struct iop_initiator sc_eventii;/* IOP event handler */
  146         bus_dmamap_t    sc_scr_dmamap;  /* Scratch DMA map */
  147         bus_dma_segment_t sc_scr_seg[1];/* Scratch DMA segment */
  148         caddr_t         sc_scr;         /* Scratch memory VA */
  149 
  150         bus_space_tag_t sc_bus_memt;    /* Parent bus memory tag */
  151         bus_space_tag_t sc_bus_iot;     /* Parent but I/O tag */
  152         bus_addr_t      sc_memaddr;     /* Register window address */
  153         bus_size_t      sc_memsize;     /* Register window size */
  154         int             sc_pcibus;      /* PCI bus number */
  155         int             sc_pcidev;      /* PCI device number */
  156 
  157         struct i2o_status sc_status;    /* Last retrieved status record */
  158 };
  159 #define IOP_OPEN                0x01    /* Device interface open */
  160 #define IOP_HAVESTATUS          0x02    /* Successfully retrieved status */
  161 #define IOP_ONLINE              0x04    /* Can use ioctl interface */
  162 
  163 struct iop_attach_args {
  164         int     ia_class;               /* device class */
  165         int     ia_tid;                 /* target ID */
  166 };
  167 #define iopcf_tid       cf_loc[IOPCF_TID]               /* TID */
  168 
  169 void    iop_init(struct iop_softc *, const char *);
  170 int     iop_intr(void *);
  171 int     iop_lct_get(struct iop_softc *);
  172 int     iop_print_ident(struct iop_softc *, int);
  173 int     iop_post(struct iop_softc *, u_int32_t *);
  174 int     iop_reconfigure(struct iop_softc *, u_int);
  175 int     iop_status_get(struct iop_softc *, int);
  176 int     iop_simple_cmd(struct iop_softc *, int, int, int, int, int);
  177 void    iop_strvis(struct iop_softc *, const char *, int, char *, int);
  178 
  179 void    iop_initiator_register(struct iop_softc *, struct iop_initiator *);
  180 void    iop_initiator_unregister(struct iop_softc *, struct iop_initiator *);
  181 
  182 struct  iop_msg *iop_msg_alloc(struct iop_softc *, int);
  183 void    iop_msg_free(struct iop_softc *, struct iop_msg *);
  184 int     iop_msg_map(struct iop_softc *, struct iop_msg *, u_int32_t *, void *,
  185                     int, int, struct proc *);
  186 int     iop_msg_map_bio(struct iop_softc *, struct iop_msg *, u_int32_t *,
  187                         void *, int, int);
  188 int     iop_msg_post(struct iop_softc *, struct iop_msg *, void *, int);
  189 void    iop_msg_unmap(struct iop_softc *, struct iop_msg *);
  190 
  191 int     iop_field_get_all(struct iop_softc *, int, int, void *, int,
  192                           struct iop_initiator *);
  193 int     iop_field_set(struct iop_softc *, int, int, void *, int, int);
  194 int     iop_table_add_row(struct iop_softc *, int, int, void *, int, int);
  195 int     iop_table_clear(struct iop_softc *, int, int);
  196 int     iop_table_del_row(struct iop_softc *, int, int, int);
  197 int     iop_table_get_row(struct iop_softc *, int, int, void *, int, int);
  198 
  199 int     iop_util_abort(struct iop_softc *, struct iop_initiator *, int, int,
  200                       int);
  201 int     iop_util_claim(struct iop_softc *, struct iop_initiator *, int, int);
  202 int     iop_util_eventreg(struct iop_softc *, struct iop_initiator *, int);
  203 
  204 #endif  /* !_I2O_IOPVAR_H_ */

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