sys/arch/arm/xscale/becc_space.c

   1 /*      $NetBSD: becc_space.c,v 1.2.2.3 2004/09/21 13:13:42 skrll 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 the ADI Engineering Big Endian Companion Chip.
  40  */
  41
  42 #include <sys/cdefs.h>
  43 __KERNEL_RCSID(0, "$NetBSD: becc_space.c,v 1.2.2.3 2004/09/21 13:13:42 skrll Exp $");
  44
  45 #include <sys/param.h>
  46 #include <sys/systm.h>
  47
  48 #include <uvm/uvm_extern.h>
  49
  50 #include <machine/bus.h>
  51
  52 #include <arm/xscale/beccreg.h>
  53 #include <arm/xscale/beccvar.h>
  54
  55 /* Prototypes for all the bus_space structure functions */
  56 bs_protos(becc);
  57 bs_protos(becc_io);
  58 bs_protos(becc_mem);
  59 bs_protos(becc_pci);
  60 bs_protos(bs_notimpl);
  61
  62 /*
  63  * Template bus_space -- copied, and the bits that are NULL are
  64  * filled in.
  65  */
  66 const struct bus_space becc_bs_tag_template = {
  67         /* cookie */
  68         (void *) 0,
  69
  70         /* mapping/unmapping */
  71         NULL,
  72         NULL,
  73         becc_bs_subregion,
  74
  75         /* allocation/deallocation */
  76         NULL,
  77         NULL,
  78
  79         /* get kernel virtual address */
  80         becc_bs_vaddr,
  81
  82         /* mmap */
  83         becc_bs_mmap,
  84
  85         /* barrier */
  86         becc_bs_barrier,
  87
  88         /* read (single) */
  89         becc_pci_bs_r_1,
  90         becc_pci_bs_r_2,
  91         becc_pci_bs_r_4,
  92         bs_notimpl_bs_r_8,
  93
  94         /* read multiple */
  95         bs_notimpl_bs_rm_1,
  96         bs_notimpl_bs_rm_2,
  97         bs_notimpl_bs_rm_4,
  98         bs_notimpl_bs_rm_8,
  99
 100         /* read region */
 101         bs_notimpl_bs_rr_1,
 102         bs_notimpl_bs_rr_2,
 103         bs_notimpl_bs_rr_4,
 104         bs_notimpl_bs_rr_8,
 105
 106         /* write (single) */
 107         becc_pci_bs_w_1,
 108         becc_pci_bs_w_2,
 109         becc_pci_bs_w_4,
 110         bs_notimpl_bs_w_8,
 111
 112         /* write multiple */
 113         bs_notimpl_bs_wm_1,
 114         bs_notimpl_bs_wm_2,
 115         bs_notimpl_bs_wm_4,
 116         bs_notimpl_bs_wm_8,
 117
 118         /* write region */
 119         bs_notimpl_bs_wr_1,
 120         bs_notimpl_bs_wr_2,
 121         bs_notimpl_bs_wr_4,
 122         bs_notimpl_bs_wr_8,
 123
 124         /* set multiple */
 125         bs_notimpl_bs_sm_1,
 126         bs_notimpl_bs_sm_2,
 127         bs_notimpl_bs_sm_4,
 128         bs_notimpl_bs_sm_8,
 129
 130         /* set region */
 131         bs_notimpl_bs_sr_1,
 132         bs_notimpl_bs_sr_2,
 133         bs_notimpl_bs_sr_4,
 134         bs_notimpl_bs_sr_8,
 135
 136         /* copy */
 137         bs_notimpl_bs_c_1,
 138         bs_notimpl_bs_c_2,
 139         bs_notimpl_bs_c_4,
 140         bs_notimpl_bs_c_8,
 141 };
 142
 143 void
 144 becc_io_bs_init(bus_space_tag_t bs, void *cookie)
 145 {
 146
 147         *bs = becc_bs_tag_template;
 148         bs->bs_cookie = cookie;
 149
 150         bs->bs_map = becc_io_bs_map;
 151         bs->bs_unmap = becc_io_bs_unmap;
 152         bs->bs_alloc = becc_io_bs_alloc;
 153         bs->bs_free = becc_io_bs_free;
 154
 155         bs->bs_vaddr = becc_io_bs_vaddr;
 156 }
 157
 158 void
 159 becc_mem_bs_init(bus_space_tag_t bs, void *cookie)
 160 {
 161
 162         *bs = becc_bs_tag_template;
 163         bs->bs_cookie = cookie;
 164
 165         bs->bs_map = becc_mem_bs_map;
 166         bs->bs_unmap = becc_mem_bs_unmap;
 167         bs->bs_alloc = becc_mem_bs_alloc;
 168         bs->bs_free = becc_mem_bs_free;
 169
 170         bs->bs_mmap = becc_mem_bs_mmap;
 171 }
 172
 173 /* *** Routines shared by becc, PCI IO, and PCI MEM. *** */
 174
 175 int
 176 becc_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset,
 177     bus_size_t size, bus_space_handle_t *nbshp)
 178 {
 179
 180         *nbshp = bsh + offset;
 181         return (0);
 182 }
 183
 184 void
 185 becc_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset,
 186     bus_size_t len, int flags)
 187 {
 188
 189         /* Nothing to do. */
 190 }
 191
 192 void *
 193 becc_bs_vaddr(void *t, bus_space_handle_t bsh)
 194 {
 195
 196         return ((void *)bsh);
 197 }
 198
 199 paddr_t
 200 becc_bs_mmap(void *t, bus_addr_t addr, off_t off, int prot, int flags)
 201 {
 202
 203         /* Not supported. */
 204         return (-1);
 205 }
 206
 207 /* *** Routines for PCI IO. *** */
 208
 209 int
 210 becc_io_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags,
 211     bus_space_handle_t *bshp)
 212 {
 213         struct becc_softc *sc = t;
 214         vaddr_t winvaddr;
 215         uint32_t busbase;
 216
 217         if (bpa >= sc->sc_ioout_xlate &&
 218             bpa < (sc->sc_ioout_xlate + (64 * 1024))) {
 219                 busbase = sc->sc_ioout_xlate;
 220                 winvaddr = sc->sc_pci_io_base;
 221         } else
 222                 return (EINVAL);
 223
 224         if ((bpa + size) >= (busbase + (64 * 1024)))
 225                 return (EINVAL);
 226
 227         /*
 228          * Found the window -- PCI I/O space is mapped at a fixed
 229          * virtual address by board-specific code.  Translate the
 230          * bus address to the virtual address.
 231          */
 232         *bshp = winvaddr + (bpa - busbase);
 233
 234         return (0);
 235 }
 236
 237 void
 238 becc_io_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size)
 239 {
 240
 241         /* Nothing to do. */
 242 }
 243
 244 int
 245 becc_io_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend,
 246     bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags,
 247     bus_addr_t *bpap, bus_space_handle_t *bshp)
 248 {
 249
 250         panic("becc_io_bs_alloc(): not implemented\n");
 251 }
 252
 253 void
 254 becc_io_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size)
 255 {
 256
 257         panic("becc_io_bs_free(): not implemented\n");
 258 }
 259
 260 void *
 261 becc_io_bs_vaddr(void *t, bus_space_handle_t bsh)
 262 {
 263
 264         /* Not supported. */
 265         return (NULL);
 266 }
 267
 268 /* *** Routines for PCI MEM. *** */
 269
 270 int
 271 becc_mem_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags,
 272     bus_space_handle_t *bshp)
 273 {
 274
 275         struct becc_softc *sc = t;
 276         vaddr_t winvaddr;
 277         uint32_t busbase;
 278
 279         /*
 280          * The two memory windows have been configured to the same
 281          * PCI base by board-specific code, so we only need to look
 282          * at the first one.
 283          */
 284
 285         if (bpa >= sc->sc_owin_xlate[0] &&
 286             bpa < (sc->sc_owin_xlate[0] + BECC_PCI_MEM1_SIZE)) {
 287                 busbase = sc->sc_owin_xlate[0];
 288                 winvaddr = sc->sc_pci_mem_base[0];
 289         } else
 290                 return (EINVAL);
 291
 292         if ((bpa + size) >= (busbase + BECC_PCI_MEM1_SIZE))
 293                 return (EINVAL);
 294
 295         /*
 296          * Found the window -- PCI MEM space is mapped at a fixed
 297          * virtual address by board-specific code.  Translate the
 298          * bus address to the virtual address.
 299          */
 300         *bshp = winvaddr + (bpa - busbase);
 301
 302         return (0);
 303 }
 304
 305 void
 306 becc_mem_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size)
 307 {
 308
 309         /* Nothing to do. */
 310 }
 311
 312 int
 313 becc_mem_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend,
 314     bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags,
 315     bus_addr_t *bpap, bus_space_handle_t *bshp)
 316 {
 317
 318         panic("becc_mem_bs_alloc(): not implemented\n");
 319 }
 320
 321 void
 322 becc_mem_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size)
 323 {
 324
 325         panic("becc_mem_bs_free(): not implemented\n");
 326 }
 327
 328 paddr_t
 329 becc_mem_bs_mmap(void *t, bus_addr_t addr, off_t off, int prot, int flags)
 330 {
 331
 332         /* XXX */
 333         return (-1);
 334 }