drivers/scsi/aic7xxx/aic79xx_inline.h

   1 /*
   2  * Inline routines shareable across OS platforms.
   3  *
   4  * Copyright (c) 1994-2001 Justin T. Gibbs.
   5  * Copyright (c) 2000-2003 Adaptec Inc.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions, and the following disclaimer,
  13  *    without modification.
  14  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  15  *    substantially similar to the "NO WARRANTY" disclaimer below
  16  *    ("Disclaimer") and any redistribution must be conditioned upon
  17  *    including a substantially similar Disclaimer requirement for further
  18  *    binary redistribution.
  19  * 3. Neither the names of the above-listed copyright holders nor the names
  20  *    of any contributors may be used to endorse or promote products derived
  21  *    from this software without specific prior written permission.
  22  *
  23  * Alternatively, this software may be distributed under the terms of the
  24  * GNU General Public License ("GPL") version 2 as published by the Free
  25  * Software Foundation.
  26  *
  27  * NO WARRANTY
  28  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  29  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  30  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  31  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  32  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  33  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  34  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  35  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  36  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  37  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  38  * POSSIBILITY OF SUCH DAMAGES.
  39  *
  40  * $Id: //depot/aic7xxx/aic7xxx/aic79xx_inline.h#59 $
  41  *
  42  * $FreeBSD$
  43  */
  44
  45 #ifndef _AIC79XX_INLINE_H_
  46 #define _AIC79XX_INLINE_H_
  47
  48 /******************************** Debugging ***********************************/
  49 static inline char *ahd_name(struct ahd_softc *ahd);
  50
  51 static inline char *ahd_name(struct ahd_softc *ahd)
  52 {
  53         return (ahd->name);
  54 }
  55
  56 /************************ Sequencer Execution Control *************************/
  57 static inline void ahd_known_modes(struct ahd_softc *ahd,
  58                                      ahd_mode src, ahd_mode dst);
  59 static inline ahd_mode_state ahd_build_mode_state(struct ahd_softc *ahd,
  60                                                     ahd_mode src,
  61                                                     ahd_mode dst);
  62 static inline void ahd_extract_mode_state(struct ahd_softc *ahd,
  63                                             ahd_mode_state state,
  64                                             ahd_mode *src, ahd_mode *dst);
  65
  66 void ahd_set_modes(struct ahd_softc *ahd, ahd_mode src,
  67                    ahd_mode dst);
  68 ahd_mode_state ahd_save_modes(struct ahd_softc *ahd);
  69 void ahd_restore_modes(struct ahd_softc *ahd,
  70                        ahd_mode_state state);
  71 int  ahd_is_paused(struct ahd_softc *ahd);
  72 void ahd_pause(struct ahd_softc *ahd);
  73 void ahd_unpause(struct ahd_softc *ahd);
  74
  75 static inline void
  76 ahd_known_modes(struct ahd_softc *ahd, ahd_mode src, ahd_mode dst)
  77 {
  78         ahd->src_mode = src;
  79         ahd->dst_mode = dst;
  80         ahd->saved_src_mode = src;
  81         ahd->saved_dst_mode = dst;
  82 }
  83
  84 static inline ahd_mode_state
  85 ahd_build_mode_state(struct ahd_softc *ahd, ahd_mode src, ahd_mode dst)
  86 {
  87         return ((src << SRC_MODE_SHIFT) | (dst << DST_MODE_SHIFT));
  88 }
  89
  90 static inline void
  91 ahd_extract_mode_state(struct ahd_softc *ahd, ahd_mode_state state,
  92                        ahd_mode *src, ahd_mode *dst)
  93 {
  94         *src = (state & SRC_MODE) >> SRC_MODE_SHIFT;
  95         *dst = (state & DST_MODE) >> DST_MODE_SHIFT;
  96 }
  97
  98 /*********************** Scatter Gather List Handling *************************/
  99 void    *ahd_sg_setup(struct ahd_softc *ahd, struct scb *scb,
 100                       void *sgptr, dma_addr_t addr,
 101                       bus_size_t len, int last);
 102
 103 /************************** Memory mapping routines ***************************/
 104 static inline size_t    ahd_sg_size(struct ahd_softc *ahd);
 105
 106 void    ahd_sync_sglist(struct ahd_softc *ahd,
 107                         struct scb *scb, int op);
 108
 109 static inline size_t ahd_sg_size(struct ahd_softc *ahd)
 110 {
 111         if ((ahd->flags & AHD_64BIT_ADDRESSING) != 0)
 112                 return (sizeof(struct ahd_dma64_seg));
 113         return (sizeof(struct ahd_dma_seg));
 114 }
 115
 116 /*********************** Miscellaneous Support Functions ***********************/
 117 struct ahd_initiator_tinfo *
 118         ahd_fetch_transinfo(struct ahd_softc *ahd,
 119                             char channel, u_int our_id,
 120                             u_int remote_id,
 121                             struct ahd_tmode_tstate **tstate);
 122 uint16_t
 123         ahd_inw(struct ahd_softc *ahd, u_int port);
 124 void    ahd_outw(struct ahd_softc *ahd, u_int port,
 125                  u_int value);
 126 uint32_t
 127         ahd_inl(struct ahd_softc *ahd, u_int port);
 128 void    ahd_outl(struct ahd_softc *ahd, u_int port,
 129                  uint32_t value);
 130 uint64_t
 131         ahd_inq(struct ahd_softc *ahd, u_int port);
 132 void    ahd_outq(struct ahd_softc *ahd, u_int port,
 133                  uint64_t value);
 134 u_int   ahd_get_scbptr(struct ahd_softc *ahd);
 135 void    ahd_set_scbptr(struct ahd_softc *ahd, u_int scbptr);
 136 u_int   ahd_inb_scbram(struct ahd_softc *ahd, u_int offset);
 137 u_int   ahd_inw_scbram(struct ahd_softc *ahd, u_int offset);
 138 struct scb *
 139         ahd_lookup_scb(struct ahd_softc *ahd, u_int tag);
 140 void    ahd_queue_scb(struct ahd_softc *ahd, struct scb *scb);
 141
 142 static inline uint8_t *ahd_get_sense_buf(struct ahd_softc *ahd,
 143                                           struct scb *scb);
 144 static inline uint32_t ahd_get_sense_bufaddr(struct ahd_softc *ahd,
 145                                               struct scb *scb);
 146
 147 #if 0 /* unused */
 148
 149 #define AHD_COPY_COL_IDX(dst, src)                              \
 150 do {                                                            \
 151         dst->hscb->scsiid = src->hscb->scsiid;                  \
 152         dst->hscb->lun = src->hscb->lun;                        \
 153 } while (0)
 154
 155 #endif
 156
 157 static inline uint8_t *
 158 ahd_get_sense_buf(struct ahd_softc *ahd, struct scb *scb)
 159 {
 160         return (scb->sense_data);
 161 }
 162
 163 static inline uint32_t
 164 ahd_get_sense_bufaddr(struct ahd_softc *ahd, struct scb *scb)
 165 {
 166         return (scb->sense_busaddr);
 167 }
 168
 169 /************************** Interrupt Processing ******************************/
 170 int     ahd_intr(struct ahd_softc *ahd);
 171
 172 #endif  /* _AIC79XX_INLINE_H_ */