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/arm/xscale/i80321/i80321_space.c

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    1 /*      $NetBSD: i80321_space.c,v 1.6 2003/10/06 15:43:35 thorpej Exp $ */
    2 
    3 /*-
    4  * Copyright (c) 2001, 2002 Wasabi Systems, Inc.
    5  * All rights reserved.
    6  *
    7  * Written by Jason R. Thorpe for Wasabi Systems, Inc.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  * 3. All advertising materials mentioning features or use of this software
   18  *    must display the following acknowledgement:
   19  *      This product includes software developed for the NetBSD Project by
   20  *      Wasabi Systems, Inc.
   21  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
   22  *    or promote products derived from this software without specific prior
   23  *    written permission.
   24  *
   25  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
   26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
   29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   35  * POSSIBILITY OF SUCH DAMAGE.
   36  */
   37 
   38 /*
   39  * bus_space functions for i80321 I/O Processor.
   40  */
   41 
   42 #include <sys/cdefs.h>
   43 __FBSDID("$FreeBSD: releng/10.3/sys/arm/xscale/i80321/i80321_space.c 278727 2015-02-13 22:32:02Z ian $");
   44 
   45 #include <sys/param.h>
   46 #include <sys/systm.h>
   47 #include <sys/bus.h>
   48 
   49 #include <machine/pcb.h>
   50 
   51 #include <vm/vm.h>
   52 #include <vm/vm_kern.h>
   53 #include <vm/pmap.h>
   54 #include <vm/vm_page.h>
   55 #include <vm/vm_extern.h>
   56 
   57 #include <machine/bus.h>
   58 
   59 #include <arm/xscale/i80321/i80321reg.h>
   60 #include <arm/xscale/i80321/i80321var.h>
   61 
   62 /* Prototypes for all the bus_space structure functions */
   63 bs_protos(i80321);
   64 bs_protos(i80321_io);
   65 bs_protos(i80321_mem);
   66 
   67 void
   68 i80321_bs_init(bus_space_tag_t bs, void *cookie)
   69 {
   70 
   71         *bs = *arm_base_bs_tag;
   72         bs->bs_privdata = cookie;
   73 }
   74 
   75 void
   76 i80321_io_bs_init(bus_space_tag_t bs, void *cookie)
   77 {
   78 
   79         *bs = *arm_base_bs_tag;
   80         bs->bs_privdata = cookie;
   81 
   82         bs->bs_map = i80321_io_bs_map;
   83         bs->bs_unmap = i80321_io_bs_unmap;
   84         bs->bs_alloc = i80321_io_bs_alloc;
   85         bs->bs_free = i80321_io_bs_free;
   86 
   87 }
   88 
   89 void
   90 i80321_mem_bs_init(bus_space_tag_t bs, void *cookie)
   91 {
   92 
   93         *bs = *arm_base_bs_tag;
   94         bs->bs_privdata = cookie;
   95 
   96         bs->bs_map = i80321_mem_bs_map;
   97         bs->bs_unmap = i80321_mem_bs_unmap;
   98         bs->bs_alloc = i80321_mem_bs_alloc;
   99         bs->bs_free = i80321_mem_bs_free;
  100 
  101 }
  102 
  103 /* *** Routines shared by i80321, PCI IO, and PCI MEM. *** */
  104 
  105 int
  106 i80321_bs_subregion(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset,
  107     bus_size_t size, bus_space_handle_t *nbshp)
  108 {
  109 
  110         *nbshp = bsh + offset;
  111         return (0);
  112 }
  113 
  114 void
  115 i80321_bs_barrier(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset,
  116     bus_size_t len, int flags)
  117 {
  118 
  119         /* Nothing to do. */
  120 }
  121 
  122 /* *** Routines for PCI IO. *** */
  123 
  124 extern struct i80321_softc *i80321_softc;
  125 int
  126 i80321_io_bs_map(bus_space_tag_t tag, bus_addr_t bpa, bus_size_t size, int flags,
  127     bus_space_handle_t *bshp)
  128 {
  129         struct i80321_softc *sc = i80321_softc;
  130         vm_offset_t winvaddr;
  131         uint32_t busbase;
  132 
  133         if (bpa >= sc->sc_ioout_xlate &&
  134             bpa < (sc->sc_ioout_xlate + VERDE_OUT_XLATE_IO_WIN_SIZE)) {
  135                 busbase = sc->sc_ioout_xlate;
  136                 winvaddr = sc->sc_iow_vaddr;
  137         } else
  138                 return (EINVAL);
  139 
  140         if ((bpa + size) >= (busbase + VERDE_OUT_XLATE_IO_WIN_SIZE))
  141                 return (EINVAL);
  142 
  143         /*
  144          * Found the window -- PCI I/O space is mapped at a fixed
  145          * virtual address by board-specific code.  Translate the
  146          * bus address to the virtual address.
  147          */
  148         *bshp = winvaddr + (bpa - busbase);
  149 
  150         return (0);
  151 }
  152 
  153 void
  154 i80321_io_bs_unmap(bus_space_tag_t tag, bus_space_handle_t h, bus_size_t size)
  155 {
  156 
  157         /* Nothing to do. */
  158 }
  159 
  160 int
  161 i80321_io_bs_alloc(bus_space_tag_t tag, bus_addr_t rstart, bus_addr_t rend,
  162     bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags,
  163     bus_addr_t *bpap, bus_space_handle_t *bshp)
  164 {
  165 
  166         panic("i80321_io_bs_alloc(): not implemented");
  167 }
  168 
  169 void
  170 i80321_io_bs_free(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t size)
  171 {
  172 
  173         panic("i80321_io_bs_free(): not implemented");
  174 }
  175 
  176 
  177 /* *** Routines for PCI MEM. *** */
  178 extern int badaddr_read(void *, int, void *);
  179 int
  180 i80321_mem_bs_map(bus_space_tag_t tag, bus_addr_t bpa, bus_size_t size, int flags,
  181     bus_space_handle_t *bshp)
  182 {
  183 
  184         *bshp = (vm_offset_t)pmap_mapdev(bpa, size);
  185         return (0);
  186 }
  187 
  188 void
  189 i80321_mem_bs_unmap(bus_space_tag_t tag, bus_space_handle_t h, bus_size_t size)
  190 {
  191 
  192         pmap_unmapdev((vm_offset_t)h, size);
  193 }
  194 
  195 int
  196 i80321_mem_bs_alloc(bus_space_tag_t tag, bus_addr_t rstart, bus_addr_t rend,
  197     bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags,
  198     bus_addr_t *bpap, bus_space_handle_t *bshp)
  199 {
  200 
  201         panic("i80321_mem_bs_alloc(): not implemented");
  202 }
  203 
  204 void
  205 i80321_mem_bs_free(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t size)
  206 {
  207 
  208         panic("i80321_mem_bs_free(): not implemented");
  209 }

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