FreeBSD/Linux Kernel Cross Reference
sys/arm/s3c2xx0/s3c2xx0_space.c

     /*      $NetBSD: s3c2xx0_space.c,v 1.7 2005/11/24 13:08:32 yamt Exp $ */
     
     /*
      * Copyright (c) 2002 Fujitsu Component Limited
      * Copyright (c) 2002 Genetec Corporation
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. Neither the name of The Fujitsu Component Limited nor the name of
     *    Genetec corporation may not be used to endorse or promote products
     *    derived from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY FUJITSU COMPONENT LIMITED AND GENETEC
     * CORPORATION ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
     * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     * DISCLAIMED.  IN NO EVENT SHALL FUJITSU COMPONENT LIMITED OR GENETEC
     * CORPORATION BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
     * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
     * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     */
    /* derived from sa11x0_io.c */
    
    /*
     * Copyright (c) 1997 Mark Brinicombe.
     * Copyright (c) 1997 Causality Limited.
     * All rights reserved.
     *
     * This code is derived from software contributed to The NetBSD Foundation
     * by Ichiro FUKUHARA.
     *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by Mark Brinicombe.
     * 4. The name of the company nor the name of the author may be used to
     *    endorse or promote products derived from this software without specific
     *    prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
     * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
     * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     */
    
    /*
     * bus_space functions for Samsung S3C2800/2400/2410.
     */
    
    #include <sys/cdefs.h>
    __FBSDID("$FreeBSD: releng/10.0/sys/arm/s3c2xx0/s3c2xx0_space.c 254172 2013-08-10 00:53:22Z cognet $");
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/bus.h>
    
    #include <vm/vm.h>
    #include <vm/vm_kern.h>
    #include <vm/pmap.h>
    #include <vm/vm_page.h>
    #include <vm/vm_extern.h>
    
    #include <machine/bus.h>
    
    /* Prototypes for all the bus_space structure functions */
    bs_protos(s3c2xx0);
    bs_protos(generic);
    bs_protos(generic_armv4);
    
    struct bus_space s3c2xx0_bs_tag = {
            /* cookie */
            (void *) 0,
    
           /* mapping/unmapping */
           s3c2xx0_bs_map,
           s3c2xx0_bs_unmap,
           s3c2xx0_bs_subregion,
   
           /* allocation/deallocation */
           s3c2xx0_bs_alloc,       /* not implemented */
           s3c2xx0_bs_free,        /* not implemented */
   
           /* barrier */
           s3c2xx0_bs_barrier,
   
           /* read (single) */
           generic_bs_r_1,
           generic_armv4_bs_r_2,
           generic_bs_r_4,
           NULL,
   
           /* read multiple */
           generic_bs_rm_1,
           generic_armv4_bs_rm_2,
           generic_bs_rm_4,
           NULL,
   
           /* read region */
           generic_bs_rr_1,
           generic_armv4_bs_rr_2,
           generic_bs_rr_4,
           NULL,
   
           /* write (single) */
           generic_bs_w_1,
           generic_armv4_bs_w_2,
           generic_bs_w_4,
           NULL,
   
           /* write multiple */
           generic_bs_wm_1,
           generic_armv4_bs_wm_2,
           generic_bs_wm_4,
           NULL,
   
           /* write region */
           generic_bs_wr_1,
           generic_armv4_bs_wr_2,
           generic_bs_wr_4,
           NULL,
   
           /* set multiple */
           NULL,
           NULL,
           NULL,
           NULL,
   
           /* set region */
           generic_bs_sr_1,
           generic_armv4_bs_sr_2,
           NULL,
           NULL,
   
           /* copy */
           NULL,
           generic_armv4_bs_c_2,
           NULL,
           NULL,
   };
   
   int
   s3c2xx0_bs_map(void *t, bus_addr_t bpa, bus_size_t size,
                  int flag, bus_space_handle_t * bshp)
   {
           u_long startpa, endpa, pa;
           vm_offset_t va;
           pt_entry_t *pte;
           const struct pmap_devmap *pd;
   
           if ((pd = pmap_devmap_find_pa(bpa, size)) != NULL) {
                   /* Device was statically mapped. */
                   *bshp = pd->pd_va + (bpa - pd->pd_pa);
                   return 0;
           }
   
           startpa = trunc_page(bpa);
           endpa = round_page(bpa + size);
   
           va = kva_alloc(endpa - startpa);
           if (!va)
                   return (ENOMEM);
   
           *bshp = (bus_space_handle_t) (va + (bpa - startpa));
   
           for (pa = startpa; pa < endpa; pa += PAGE_SIZE, va += PAGE_SIZE) {
                   pmap_kenter(va, pa);
                   pte = vtopte(va);
                   if ((flag & BUS_SPACE_MAP_CACHEABLE) == 0)
                           *pte &= ~L2_S_CACHE_MASK;
           }
           return (0);
   }
   
   void
   s3c2xx0_bs_unmap(void *t, bus_space_handle_t h, bus_size_t size)
   {
           vm_offset_t va, endva, origva;
   
           if (pmap_devmap_find_va((vm_offset_t)h, size) != NULL) {
                   /* Device was statically mapped; nothing to do. */
                   return;
           }
   
           endva = round_page((vm_offset_t)h + size);
           origva = va = trunc_page((vm_offset_t)h);
   
           while (va < endva) {
                   pmap_kremove(va);
                   va += PAGE_SIZE;
           }
           kva_free(origva, endva - origva);
   }
   
   int
   s3c2xx0_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset,
                        bus_size_t size, bus_space_handle_t * nbshp)
   {
   
           *nbshp = bsh + offset;
           return (0);
   }
   
   void
   s3c2xx0_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset,
                      bus_size_t len, int flags)
   {
   
           /* Nothing to do. */
   }
   
   int
   s3c2xx0_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend,
                    bus_size_t size, bus_size_t alignment, bus_size_t boundary,
                    int flags, bus_addr_t * bpap, bus_space_handle_t * bshp)
   {
   
           panic("s3c2xx0_io_bs_alloc(): not implemented\n");
   }
   
   void
   s3c2xx0_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size)
   {
           panic("s3c2xx0_io_bs_free(): not implemented\n");
   }

Cache object: 9e1a7efab1ecf2d414113eed3b90fc47