sys/arch/arm/footbridge/footbridge_com_io.c

   1 /*      $NetBSD: footbridge_com_io.c,v 1.5 2003/03/23 14:12:25 chris Exp $      */
   2
   3 /*
   4  * Copyright (c) 1997 Mark Brinicombe.
   5  * Copyright (c) 1997 Causality Limited.
   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  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed by Mark Brinicombe
  19  *      for the NetBSD Project.
  20  * 4. The name of the company nor the name of the author may be used to
  21  *    endorse or promote products derived from this software without specific
  22  *    prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
  25  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  26  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  27  * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
  28  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  29  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  30  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  */
  36
  37 /*
  38  * This file provides the bus space tag for the footbridge serial console
  39  */
  40
  41 /*
  42  * bus_space I/O functions for mainbus
  43  */
  44
  45 #include <sys/cdefs.h>
  46 __KERNEL_RCSID(0, "$NetBSD: footbridge_com_io.c,v 1.5 2003/03/23 14:12:25 chris Exp $");
  47
  48 #include <sys/param.h>
  49 #include <sys/systm.h>
  50 #include <machine/bus.h>
  51
  52 /* Proto types for all the bus_space structure functions */
  53
  54 bs_protos(fcomcons);
  55 bs_protos(generic);
  56 bs_protos(bs_notimpl);
  57
  58 /* Declare the fcomcons bus space tag */
  59
  60 struct bus_space fcomcons_bs_tag = {
  61         /* cookie */
  62         NULL,
  63
  64         /* mapping/unmapping */
  65         fcomcons_bs_map,
  66         fcomcons_bs_unmap,
  67         fcomcons_bs_subregion,
  68
  69         /* allocation/deallocation */
  70         fcomcons_bs_alloc,
  71         fcomcons_bs_free,
  72
  73         /* get kernel virtual address */
  74         0, /* never used */
  75
  76         /* Mmap bus space for user */
  77         bs_notimpl_bs_mmap,
  78
  79         /* barrier */
  80         fcomcons_bs_barrier,
  81
  82         /* read (single) */
  83         bs_notimpl_bs_r_1,
  84         bs_notimpl_bs_r_2,
  85         generic_bs_r_4,
  86         bs_notimpl_bs_r_8,
  87
  88         /* read multiple */
  89         bs_notimpl_bs_rm_1,
  90         bs_notimpl_bs_rm_2,
  91         bs_notimpl_bs_rm_4,
  92         bs_notimpl_bs_rm_8,
  93
  94         /* read region */
  95         bs_notimpl_bs_rr_1,
  96         bs_notimpl_bs_rr_2,
  97         bs_notimpl_bs_rr_4,
  98         bs_notimpl_bs_rr_8,
  99
 100         /* write (single) */
 101         bs_notimpl_bs_w_1,
 102         bs_notimpl_bs_w_2,
 103         generic_bs_w_4,
 104         bs_notimpl_bs_w_8,
 105
 106         /* write multiple */
 107         bs_notimpl_bs_wm_1,
 108         bs_notimpl_bs_wm_2,
 109         bs_notimpl_bs_wm_4,
 110         bs_notimpl_bs_wm_8,
 111
 112         /* write region */
 113         bs_notimpl_bs_wr_1,
 114         bs_notimpl_bs_wr_2,
 115         bs_notimpl_bs_wr_4,
 116         bs_notimpl_bs_wr_8,
 117
 118         bs_notimpl_bs_sm_1,
 119         bs_notimpl_bs_sm_2,
 120         bs_notimpl_bs_sm_4,
 121         bs_notimpl_bs_sm_8,
 122
 123         /* set region */
 124         bs_notimpl_bs_sr_1,
 125         bs_notimpl_bs_sr_2,
 126         bs_notimpl_bs_sr_4,
 127         bs_notimpl_bs_sr_8,
 128
 129         /* copy */
 130         bs_notimpl_bs_c_1,
 131         bs_notimpl_bs_c_2,
 132         bs_notimpl_bs_c_4,
 133         bs_notimpl_bs_c_8,
 134 };
 135
 136 /* bus space functions */
 137
 138 int
 139 fcomcons_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int cacheable, bus_space_handle_t *bshp)
 140 {
 141         /*
 142          * Temporary implementation as all I/O is already mapped etc.
 143          *
 144          * Eventually this function will do the mapping check for multiple maps
 145          */
 146         *bshp = bpa;
 147         return(0);
 148         }
 149
 150 int
 151 fcomcons_bs_alloc(t, rstart, rend, size, alignment, boundary, cacheable,
 152     bpap, bshp)
 153         void *t;
 154         bus_addr_t rstart, rend;
 155         bus_size_t size, alignment, boundary;
 156         int cacheable;
 157         bus_addr_t *bpap;
 158         bus_space_handle_t *bshp;
 159 {
 160         panic("fcomcons_alloc(): Help!");
 161 }
 162
 163
 164 void
 165 fcomcons_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size)
 166 {
 167         /*
 168          * Temporary implementation
 169          */
 170 }
 171
 172 void
 173 fcomcons_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size)
 174 {
 175
 176         panic("fcomcons_free(): Help!");
 177         /* fcomcons_unmap() does all that we need to do. */
 178 /*      fcomcons_unmap(t, bsh, size);*/
 179 }
 180
 181 int
 182 fcomcons_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset, bus_size_t size, bus_space_handle_t *nbshp)
 183 {
 184
 185         *nbshp = bsh + offset;
 186         return (0);
 187 }
 188
 189 void
 190 fcomcons_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset, bus_size_t len, int flags)
 191 {
 192 }
 193
 194 /* End of footbridge_com_io.c */