1999-04-16 01:35:26 +00:00
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/* This file is part of the program psim.
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Copyright (C) 1994-1996, 1998, Andrew Cagney <cagney@highland.com.au>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "hw-main.h"
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#include "hw-base.h"
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#ifdef HAVE_STRING_H
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#include <string.h>
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#else
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#ifdef HAVE_STRINGS_H
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#include <strings.h>
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#endif
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#endif
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#if HAVE_STDLIB_H
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#include <stdlib.h>
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#endif
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#include <ctype.h>
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#include "hw-config.h"
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struct hw_base_data {
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int finished_p;
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const struct hw_descriptor *descriptor;
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hw_delete_callback *to_delete;
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};
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static int
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generic_hw_unit_decode (struct hw *bus,
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const char *unit,
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hw_unit *phys)
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{
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memset (phys, 0, sizeof (*phys));
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if (unit == NULL)
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return 0;
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else
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{
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int nr_cells = 0;
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const int max_nr_cells = hw_unit_nr_address_cells (bus);
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while (1)
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{
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char *end = NULL;
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unsigned long val;
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val = strtoul (unit, &end, 0);
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/* parse error? */
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if (unit == end)
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return -1;
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/* two many cells? */
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if (nr_cells >= max_nr_cells)
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return -1;
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/* save it */
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phys->cells[nr_cells] = val;
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nr_cells++;
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unit = end;
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/* more to follow? */
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if (isspace (*unit) || *unit == '\0')
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break;
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if (*unit != ',')
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return -1;
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unit++;
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}
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if (nr_cells < max_nr_cells) {
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/* shift everything to correct position */
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int i;
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for (i = 1; i <= nr_cells; i++)
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phys->cells[max_nr_cells - i] = phys->cells[nr_cells - i];
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for (i = 0; i < (max_nr_cells - nr_cells); i++)
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phys->cells[i] = 0;
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}
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phys->nr_cells = max_nr_cells;
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return max_nr_cells;
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}
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}
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static int
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generic_hw_unit_encode (struct hw *bus,
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const hw_unit *phys,
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char *buf,
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int sizeof_buf)
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{
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int i;
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int len;
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char *pos = buf;
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/* skip leading zero's */
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for (i = 0; i < phys->nr_cells; i++)
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{
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if (phys->cells[i] != 0)
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break;
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}
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/* don't output anything if empty */
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if (phys->nr_cells == 0)
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{
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strcpy(pos, "");
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len = 0;
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}
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else if (i == phys->nr_cells)
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{
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/* all zero */
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strcpy(pos, "0");
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len = 1;
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}
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else
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{
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for (; i < phys->nr_cells; i++)
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{
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if (pos != buf) {
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strcat(pos, ",");
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pos = strchr(pos, '\0');
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}
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if (phys->cells[i] < 10)
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sprintf (pos, "%ld", (unsigned long)phys->cells[i]);
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else
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sprintf (pos, "0x%lx", (unsigned long)phys->cells[i]);
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pos = strchr(pos, '\0');
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}
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len = pos - buf;
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}
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if (len >= sizeof_buf)
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hw_abort (NULL, "generic_unit_encode - buffer overflow\n");
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return len;
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}
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static int
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generic_hw_unit_address_to_attach_address (struct hw *me,
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const hw_unit *address,
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int *attach_space,
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unsigned_word *attach_address,
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struct hw *client)
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{
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int i;
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for (i = 0; i < address->nr_cells - 2; i++)
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{
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if (address->cells[i] != 0)
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hw_abort (me, "Only 32bit addresses supported");
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}
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if (address->nr_cells >= 2)
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*attach_space = address->cells[address->nr_cells - 2];
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else
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*attach_space = 0;
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*attach_address = address->cells[address->nr_cells - 1];
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return 1;
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}
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static int
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generic_hw_unit_size_to_attach_size (struct hw *me,
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const hw_unit *size,
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unsigned *nr_bytes,
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struct hw *client)
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{
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int i;
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for (i = 0; i < size->nr_cells - 1; i++)
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{
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if (size->cells[i] != 0)
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hw_abort (me, "Only 32bit sizes supported");
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}
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*nr_bytes = size->cells[0];
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return *nr_bytes;
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}
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/* ignore/passthrough versions of each function */
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static void
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passthrough_hw_attach_address (struct hw *me,
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int level,
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int space,
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address_word addr,
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address_word nr_bytes,
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struct hw *client) /*callback/default*/
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{
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if (hw_parent (me) == NULL)
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hw_abort (client, "hw_attach_address: no parent attach method");
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hw_attach_address (hw_parent (me), level,
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space, addr, nr_bytes,
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client);
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}
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static void
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passthrough_hw_detach_address (struct hw *me,
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int level,
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int space,
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address_word addr,
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address_word nr_bytes,
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struct hw *client) /*callback/default*/
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{
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if (hw_parent (me) == NULL)
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hw_abort (client, "hw_attach_address: no parent attach method");
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hw_detach_address (hw_parent (me), level,
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space, addr, nr_bytes,
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client);
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}
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static unsigned
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panic_hw_io_read_buffer (struct hw *me,
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void *dest,
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int space,
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unsigned_word addr,
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unsigned nr_bytes)
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{
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hw_abort (me, "no io-read method");
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return 0;
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}
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static unsigned
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panic_hw_io_write_buffer (struct hw *me,
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const void *source,
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int space,
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unsigned_word addr,
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unsigned nr_bytes)
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{
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hw_abort (me, "no io-write method");
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return 0;
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}
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static unsigned
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passthrough_hw_dma_read_buffer (struct hw *me,
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void *dest,
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int space,
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unsigned_word addr,
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unsigned nr_bytes)
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{
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if (hw_parent (me) == NULL)
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hw_abort (me, "no parent dma-read method");
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return hw_dma_read_buffer (hw_parent (me), dest,
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space, addr, nr_bytes);
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}
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static unsigned
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passthrough_hw_dma_write_buffer (struct hw *me,
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const void *source,
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int space,
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unsigned_word addr,
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unsigned nr_bytes,
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int violate_read_only_section)
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{
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if (hw_parent (me) == NULL)
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hw_abort (me, "no parent dma-write method");
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return hw_dma_write_buffer (hw_parent (me), source,
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space, addr,
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nr_bytes,
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violate_read_only_section);
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}
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static void
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ignore_hw_delete (struct hw *me)
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{
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/* NOP */
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}
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static const char *
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full_name_of_hw (struct hw *leaf,
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char *buf,
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unsigned sizeof_buf)
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{
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/* get a buffer */
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char full_name[1024];
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if (buf == (char*)0)
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{
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buf = full_name;
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sizeof_buf = sizeof (full_name);
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}
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/* use head recursion to construct the path */
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if (hw_parent (leaf) == NULL)
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/* root */
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{
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if (sizeof_buf < 1)
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hw_abort (leaf, "buffer overflow");
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*buf = '\0';
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}
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else
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/* sub node */
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{
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char unit[1024];
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full_name_of_hw (hw_parent (leaf), buf, sizeof_buf);
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if (hw_unit_encode (hw_parent (leaf),
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hw_unit_address (leaf),
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unit + 1,
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sizeof (unit) - 1)
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> 0)
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unit[0] = '@';
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else
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unit[0] = '\0';
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if (strlen (buf) + strlen ("/") + strlen (hw_name (leaf)) + strlen (unit)
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>= sizeof_buf)
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hw_abort (leaf, "buffer overflow");
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strcat (buf, "/");
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strcat (buf, hw_name (leaf));
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strcat (buf, unit);
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}
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/* return it usefully */
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if (buf == full_name)
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buf = hw_strdup (leaf, full_name);
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return buf;
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}
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struct hw *
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hw_create (struct sim_state *sd,
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struct hw *parent,
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const char *family,
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const char *name,
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const char *unit,
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const char *args)
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{
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/* NOTE: HW must be allocated using ZALLOC, others use HW_ZALLOC */
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struct hw *hw = ZALLOC (struct hw);
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/* our identity */
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hw->family_of_hw = hw_strdup (hw, family);
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hw->name_of_hw = hw_strdup (hw, name);
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hw->args_of_hw = hw_strdup (hw, args);
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/* a hook into the system */
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if (sd != NULL)
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hw->system_of_hw = sd;
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else if (parent != NULL)
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hw->system_of_hw = hw_system (parent);
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else
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hw_abort (parent, "No system found");
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/* in a tree */
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if (parent != NULL)
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{
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struct hw **sibling = &parent->child_of_hw;
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while ((*sibling) != NULL)
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sibling = &(*sibling)->sibling_of_hw;
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*sibling = hw;
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hw->parent_of_hw = parent;
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}
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/* top of tree */
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if (parent != NULL)
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{
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struct hw *root = parent;
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while (root->parent_of_hw != NULL)
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root = root->parent_of_hw;
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hw->root_of_hw = root;
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}
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/* a unique identifier for the device on the parents bus */
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if (parent != NULL)
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{
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hw_unit_decode (parent, unit, &hw->unit_address_of_hw);
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}
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/* Determine our path */
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if (parent != NULL)
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hw->path_of_hw = full_name_of_hw (hw, NULL, 0);
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else
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hw->path_of_hw = "/";
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/* create our base type */
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hw->base_of_hw = HW_ZALLOC (hw, struct hw_base_data);
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hw->base_of_hw->finished_p = 0;
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/* our callbacks */
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set_hw_io_read_buffer (hw, panic_hw_io_read_buffer);
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set_hw_io_write_buffer (hw, panic_hw_io_write_buffer);
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set_hw_dma_read_buffer (hw, passthrough_hw_dma_read_buffer);
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set_hw_dma_write_buffer (hw, passthrough_hw_dma_write_buffer);
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set_hw_unit_decode (hw, generic_hw_unit_decode);
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set_hw_unit_encode (hw, generic_hw_unit_encode);
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set_hw_unit_address_to_attach_address (hw, generic_hw_unit_address_to_attach_address);
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set_hw_unit_size_to_attach_size (hw, generic_hw_unit_size_to_attach_size);
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set_hw_attach_address (hw, passthrough_hw_attach_address);
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set_hw_detach_address (hw, passthrough_hw_detach_address);
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set_hw_delete (hw, ignore_hw_delete);
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/* locate a descriptor */
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{
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const struct hw_descriptor **table;
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for (table = hw_descriptors;
|
|
|
|
*table != NULL;
|
|
|
|
table++)
|
|
|
|
{
|
|
|
|
const struct hw_descriptor *entry;
|
|
|
|
for (entry = *table;
|
|
|
|
entry->family != NULL;
|
|
|
|
entry++)
|
|
|
|
{
|
|
|
|
if (strcmp (family, entry->family) == 0)
|
|
|
|
{
|
|
|
|
hw->base_of_hw->descriptor = entry;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (hw->base_of_hw->descriptor == NULL)
|
|
|
|
{
|
|
|
|
hw_abort (parent, "Unknown device `%s'", family);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Attach dummy ports */
|
|
|
|
create_hw_alloc_data (hw);
|
|
|
|
create_hw_property_data (hw);
|
|
|
|
create_hw_port_data (hw);
|
|
|
|
create_hw_event_data (hw);
|
|
|
|
create_hw_handle_data (hw);
|
|
|
|
create_hw_instance_data (hw);
|
|
|
|
|
|
|
|
return hw;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
int
|
|
|
|
hw_finished_p (struct hw *me)
|
|
|
|
{
|
|
|
|
return (me->base_of_hw->finished_p);
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
hw_finish (struct hw *me)
|
|
|
|
{
|
|
|
|
if (hw_finished_p (me))
|
|
|
|
hw_abort (me, "Attempt to finish finished device");
|
|
|
|
|
|
|
|
/* Fill in the (hopefully) defined address/size cells values */
|
|
|
|
if (hw_find_property (me, "#address-cells") != NULL)
|
|
|
|
me->nr_address_cells_of_hw_unit =
|
|
|
|
hw_find_integer_property (me, "#address-cells");
|
|
|
|
else
|
|
|
|
me->nr_address_cells_of_hw_unit = 2;
|
|
|
|
if (hw_find_property (me, "#size-cells") != NULL)
|
|
|
|
me->nr_size_cells_of_hw_unit =
|
|
|
|
hw_find_integer_property (me, "#size-cells");
|
|
|
|
else
|
|
|
|
me->nr_size_cells_of_hw_unit = 1;
|
|
|
|
|
|
|
|
/* Fill in the (hopefully) defined trace variable */
|
|
|
|
if (hw_find_property (me, "trace?") != NULL)
|
|
|
|
me->trace_of_hw_p = hw_find_boolean_property (me, "trace?");
|
|
|
|
/* allow global variable to define default tracing */
|
|
|
|
else if (! hw_trace_p (me)
|
|
|
|
&& hw_find_property (hw_root (me), "global-trace?") != NULL
|
|
|
|
&& hw_find_boolean_property (hw_root (me), "global-trace?"))
|
|
|
|
me->trace_of_hw_p = 1;
|
|
|
|
|
|
|
|
|
|
|
|
/* Allow the real device to override any methods */
|
|
|
|
me->base_of_hw->descriptor->to_finish (me);
|
|
|
|
me->base_of_hw->finished_p = 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
hw_delete (struct hw *me)
|
|
|
|
{
|
|
|
|
/* give the object a chance to tidy up */
|
|
|
|
me->base_of_hw->to_delete (me);
|
|
|
|
|
|
|
|
delete_hw_instance_data (me);
|
|
|
|
delete_hw_handle_data (me);
|
|
|
|
delete_hw_event_data (me);
|
|
|
|
delete_hw_port_data (me);
|
|
|
|
delete_hw_property_data (me);
|
|
|
|
|
|
|
|
/* now unlink us from the tree */
|
|
|
|
if (hw_parent (me))
|
|
|
|
{
|
|
|
|
struct hw **sibling = &hw_parent (me)->child_of_hw;
|
|
|
|
while (*sibling != NULL)
|
|
|
|
{
|
|
|
|
if (*sibling == me)
|
|
|
|
{
|
|
|
|
*sibling = me->sibling_of_hw;
|
|
|
|
me->sibling_of_hw = NULL;
|
|
|
|
me->parent_of_hw = NULL;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* some sanity checks */
|
|
|
|
if (hw_child (me) != NULL)
|
|
|
|
{
|
|
|
|
hw_abort (me, "attempt to delete device with children");
|
|
|
|
}
|
|
|
|
if (hw_sibling (me) != NULL)
|
|
|
|
{
|
|
|
|
hw_abort (me, "attempt to delete device with siblings");
|
|
|
|
}
|
|
|
|
|
|
|
|
/* blow away all memory belonging to the device */
|
|
|
|
delete_hw_alloc_data (me);
|
|
|
|
|
|
|
|
/* finally */
|
|
|
|
zfree (me);
|
|
|
|
}
|
|
|
|
|
2000-11-25 09:18:52 +00:00
|
|
|
void
|
|
|
|
set_hw_delete (struct hw *hw, hw_delete_callback method)
|
|
|
|
{
|
|
|
|
hw->base_of_hw->to_delete = method;
|
|
|
|
}
|
|
|
|
|
1999-04-16 01:35:26 +00:00
|
|
|
|
|
|
|
/* Go through the devices various reg properties for those that
|
|
|
|
specify attach addresses */
|
|
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
do_hw_attach_regs (struct hw *hw)
|
|
|
|
{
|
|
|
|
static const char *(reg_property_names[]) = {
|
|
|
|
"attach-addresses",
|
|
|
|
"assigned-addresses",
|
|
|
|
"reg",
|
|
|
|
"alternate-reg" ,
|
|
|
|
NULL
|
|
|
|
};
|
|
|
|
const char **reg_property_name;
|
|
|
|
int nr_valid_reg_properties = 0;
|
|
|
|
for (reg_property_name = reg_property_names;
|
|
|
|
*reg_property_name != NULL;
|
|
|
|
reg_property_name++)
|
|
|
|
{
|
|
|
|
if (hw_find_property (hw, *reg_property_name) != NULL)
|
|
|
|
{
|
|
|
|
reg_property_spec reg;
|
|
|
|
int reg_entry;
|
|
|
|
for (reg_entry = 0;
|
|
|
|
hw_find_reg_array_property (hw, *reg_property_name, reg_entry,
|
|
|
|
®);
|
|
|
|
reg_entry++)
|
|
|
|
{
|
|
|
|
unsigned_word attach_address;
|
|
|
|
int attach_space;
|
|
|
|
unsigned attach_size;
|
|
|
|
if (!hw_unit_address_to_attach_address (hw_parent (hw),
|
|
|
|
®.address,
|
|
|
|
&attach_space,
|
|
|
|
&attach_address,
|
|
|
|
hw))
|
|
|
|
continue;
|
|
|
|
if (!hw_unit_size_to_attach_size (hw_parent (hw),
|
|
|
|
®.size,
|
|
|
|
&attach_size, hw))
|
|
|
|
continue;
|
|
|
|
hw_attach_address (hw_parent (hw),
|
|
|
|
0,
|
|
|
|
attach_space, attach_address, attach_size,
|
|
|
|
hw);
|
|
|
|
nr_valid_reg_properties++;
|
|
|
|
}
|
|
|
|
/* if first option matches don't try for any others */
|
|
|
|
if (reg_property_name == reg_property_names)
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|