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/i8134x/i81342_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 i81342 I/O Processor.
   40  */
   41 
   42 #include <sys/cdefs.h>
   43 __FBSDID("$FreeBSD: releng/10.4/sys/arm/xscale/i8134x/i81342_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 #include <sys/malloc.h>
   49 
   50 #include <machine/pcb.h>
   51 
   52 #include <vm/vm.h>
   53 #include <vm/vm_kern.h>
   54 #include <vm/pmap.h>
   55 #include <vm/vm_page.h>
   56 #include <vm/vm_extern.h>
   57 
   58 #include <machine/bus.h>
   59 
   60 #include <arm/xscale/i8134x/i81342reg.h>
   61 #include <arm/xscale/i8134x/i81342var.h>
   62 
   63 /* Prototypes for all the bus_space structure functions */
   64 bs_protos(i81342);
   65 bs_protos(i81342_io);
   66 bs_protos(i81342_mem);
   67 
   68 void
   69 i81342_bs_init(bus_space_tag_t bs, void *cookie)
   70 {
   71 
   72         *bs = *arm_base_bs_tag;
   73         bs->bs_privdata = cookie;
   74 }
   75 
   76 void
   77 i81342_io_bs_init(bus_space_tag_t bs, void *cookie)
   78 {
   79 
   80         *bs = *arm_base_bs_tag;
   81         bs->bs_privdata = cookie;
   82 
   83         bs->bs_map = i81342_io_bs_map;
   84         bs->bs_unmap = i81342_io_bs_unmap;
   85         bs->bs_alloc = i81342_io_bs_alloc;
   86         bs->bs_free = i81342_io_bs_free;
   87 
   88 }
   89 
   90 void
   91 i81342_mem_bs_init(bus_space_tag_t bs, void *cookie)
   92 {
   93 
   94         *bs = *arm_base_bs_tag;
   95         bs->bs_privdata = cookie;
   96 
   97         bs->bs_map = i81342_mem_bs_map;
   98         bs->bs_unmap = i81342_mem_bs_unmap;
   99         bs->bs_alloc = i81342_mem_bs_alloc;
  100         bs->bs_free = i81342_mem_bs_free;
  101 
  102 }
  103 
  104 /* *** Routines shared by i81342, PCI IO, and PCI MEM. *** */
  105 
  106 int
  107 i81342_bs_subregion(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset,
  108     bus_size_t size, bus_space_handle_t *nbshp)
  109 {
  110 
  111         *nbshp = bsh + offset;
  112         return (0);
  113 }
  114 
  115 void
  116 i81342_bs_barrier(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset,
  117     bus_size_t len, int flags)
  118 {
  119 
  120         /* Nothing to do. */
  121 }
  122 
  123 /* *** Routines for PCI IO. *** */
  124 
  125 int
  126 i81342_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 
  130         *bshp = bpa;
  131         return (0);
  132 }
  133 
  134 void
  135 i81342_io_bs_unmap(bus_space_tag_t tag, bus_space_handle_t h, bus_size_t size)
  136 {
  137 
  138         /* Nothing to do. */
  139 }
  140 
  141 int
  142 i81342_io_bs_alloc(bus_space_tag_t tag, bus_addr_t rstart, bus_addr_t rend,
  143     bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags,
  144     bus_addr_t *bpap, bus_space_handle_t *bshp)
  145 {
  146 
  147         panic("i81342_io_bs_alloc(): not implemented");
  148 }
  149 
  150 void
  151 i81342_io_bs_free(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t size)
  152 {
  153 
  154         panic("i81342_io_bs_free(): not implemented");
  155 }
  156 
  157 
  158 /* *** Routines for PCI MEM. *** */
  159 extern int badaddr_read(void *, int, void *);
  160 static vm_offset_t allocable = 0xe1000000;
  161 int
  162 i81342_mem_bs_map(bus_space_tag_t tag, bus_addr_t bpa, bus_size_t size, int flags,
  163     bus_space_handle_t *bshp)
  164 {
  165         struct i81342_pci_softc *sc = (struct i81342_pci_softc *)tag->bs_privdata;
  166         struct i81342_pci_map *tmp;
  167         vm_offset_t addr, endaddr;
  168         vm_paddr_t paddr;
  169 
  170         /* Lookup to see if we already have a mapping at this address. */
  171         tmp = sc->sc_pci_mappings;
  172         while (tmp) {
  173                 if (tmp->paddr <= bpa && tmp->paddr + tmp->size >
  174                     bpa + size) {
  175                         *bshp = bpa - tmp->paddr + tmp->vaddr;
  176                         return (0);
  177                 }
  178                 tmp = tmp->next;
  179         }
  180         addr = allocable;
  181         endaddr = ((addr + size) &~ (0x1000000 - 1)) + 0x1000000;
  182         if (endaddr >= IOP34X_VADDR)
  183                 panic("PCI virtual memory exhausted");
  184         allocable = endaddr;
  185         tmp = malloc(sizeof(*tmp), M_DEVBUF, M_WAITOK);
  186         tmp->next = NULL;
  187         paddr = bpa &~ (0x100000 - 1);
  188         tmp->paddr = paddr;
  189         tmp->vaddr = addr;
  190         tmp->size = 0;
  191         while (addr < endaddr) {
  192                 pmap_kenter_supersection(addr, paddr + (sc->sc_is_atux ?
  193                     IOP34X_PCIX_OMBAR : IOP34X_PCIE_OMBAR), 0);
  194                 addr += 0x1000000;
  195                 paddr += 0x1000000;
  196                 tmp->size += 0x1000000;
  197         }
  198         tmp->next = sc->sc_pci_mappings;
  199         sc->sc_pci_mappings = tmp;
  200         *bshp = bpa - tmp->paddr + tmp->vaddr;
  201         return (0);
  202 }
  203 
  204 void
  205 i81342_mem_bs_unmap(bus_space_tag_t tag, bus_space_handle_t h, bus_size_t size)
  206 {
  207 #if 0
  208         vm_offset_t va, endva;
  209 
  210         va = trunc_page((vm_offset_t)h);
  211         endva = va + round_page(size);
  212 
  213         /* Free the kernel virtual mapping. */
  214         kva_free(va, endva - va);
  215 #endif
  216 }
  217 
  218 int
  219 i81342_mem_bs_alloc(bus_space_tag_t tag, bus_addr_t rstart, bus_addr_t rend,
  220     bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags,
  221     bus_addr_t *bpap, bus_space_handle_t *bshp)
  222 {
  223 
  224         panic("i81342_mem_bs_alloc(): not implemented");
  225 }
  226 
  227 void
  228 i81342_mem_bs_free(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t size)
  229 {
  230 
  231         panic("i81342_mem_bs_free(): not implemented");
  232 }

Cache object: 79b000e1e892723092750fa4e4e0d9b3


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