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68ed285428
Since we require C11 now, we can assume many headers exist, and clean up all of the conditional includes. It's not like any of this code actually accounted for the headers not existing, just whether we could include them. The strings.h cleanup is a little nuanced: it isn't in C11, but every use of it in the codebase will include strings.h only if string.h doesn't exist. Since we now assume the C11 string.h exists, we'll never include strings.h, so we can delete it.
307 lines
7.3 KiB
C
307 lines
7.3 KiB
C
/* This file is part of the program psim.
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Copyright (C) 1994-1996, 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 3 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, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _DEVICE_TABLE_C_
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#define _DEVICE_TABLE_C_
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#include "device_table.h"
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#include <stdlib.h>
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#include <ctype.h>
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/* Helper functions */
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/* Go through the devices various reg properties for those that
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specify attach addresses */
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void
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generic_device_init_address(device *me)
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{
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static const char *(reg_property_names[]) = {
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"attach-addresses",
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"assigned-addresses",
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"reg",
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"alternate-reg" ,
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NULL
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};
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const char **reg_property_name;
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int nr_valid_reg_properties = 0;
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for (reg_property_name = reg_property_names;
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*reg_property_name != NULL;
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reg_property_name++) {
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if (device_find_property(me, *reg_property_name) != NULL) {
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reg_property_spec reg;
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int reg_entry;
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for (reg_entry = 0;
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device_find_reg_array_property(me, *reg_property_name, reg_entry,
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®);
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reg_entry++) {
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unsigned_word attach_address;
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int attach_space;
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unsigned attach_size;
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if (!device_address_to_attach_address(device_parent(me),
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®.address,
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&attach_space, &attach_address,
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me))
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continue;
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if (!device_size_to_attach_size(device_parent(me),
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®.size,
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&attach_size, me))
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continue;
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device_attach_address(device_parent(me),
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attach_callback,
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attach_space, attach_address, attach_size,
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access_read_write_exec,
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me);
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nr_valid_reg_properties++;
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}
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/* if first option matches don't try for any others */
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if (reg_property_name == reg_property_names)
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break;
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}
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}
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}
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int
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generic_device_unit_decode(device *bus,
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const char *unit,
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device_unit *phys)
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{
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memset(phys, 0, sizeof(device_unit));
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if (unit == NULL)
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return 0;
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else {
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int nr_cells = 0;
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const int max_nr_cells = device_nr_address_cells(bus);
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while (1) {
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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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int
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generic_device_unit_encode(device *bus,
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const device_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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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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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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/* 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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for (; i < phys->nr_cells; i++) {
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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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error("generic_unit_encode - buffer overflow\n");
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return len;
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}
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int
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generic_device_address_to_attach_address(device *me,
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const device_unit *address,
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int *attach_space,
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unsigned_word *attach_address,
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device *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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if (address->cells[i] != 0)
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device_error(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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int
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generic_device_size_to_attach_size(device *me,
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const device_unit *size,
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unsigned *nr_bytes,
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device *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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if (size->cells[i] != 0)
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device_error(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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void
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passthrough_device_address_attach(device *me,
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attach_type attach,
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int space,
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unsigned_word addr,
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unsigned nr_bytes,
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access_type access,
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device *client) /*callback/default*/
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{
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device_attach_address(device_parent(me), attach,
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space, addr, nr_bytes,
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access,
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client);
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}
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void
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passthrough_device_address_detach(device *me,
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attach_type attach,
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int space,
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unsigned_word addr,
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unsigned nr_bytes,
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access_type access,
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device *client) /*callback/default*/
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{
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device_detach_address(device_parent(me), attach,
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space, addr, nr_bytes, access,
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client);
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}
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unsigned
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passthrough_device_dma_read_buffer(device *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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return device_dma_read_buffer(device_parent(me), dest,
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space, addr, nr_bytes);
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}
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unsigned
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passthrough_device_dma_write_buffer(device *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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return device_dma_write_buffer(device_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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int
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ignore_device_unit_decode(device *me,
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const char *unit,
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device_unit *phys)
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{
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memset(phys, 0, sizeof(device_unit));
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return 0;
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}
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static const device_callbacks passthrough_callbacks = {
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{ NULL, }, /* init */
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{ passthrough_device_address_attach,
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passthrough_device_address_detach, },
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{ NULL, }, /* IO */
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{ passthrough_device_dma_read_buffer, passthrough_device_dma_write_buffer, },
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{ NULL, }, /* interrupt */
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{ generic_device_unit_decode,
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generic_device_unit_encode, },
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};
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static const device_descriptor ob_device_table[] = {
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/* standard OpenBoot devices */
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{ "aliases", NULL, &passthrough_callbacks },
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{ "options", NULL, &passthrough_callbacks },
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{ "chosen", NULL, &passthrough_callbacks },
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{ "packages", NULL, &passthrough_callbacks },
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{ "cpus", NULL, &passthrough_callbacks },
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{ "openprom", NULL, &passthrough_callbacks },
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{ "init", NULL, &passthrough_callbacks },
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{ NULL },
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};
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const device_descriptor *const device_table[] = {
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ob_device_table,
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#include "hw.c"
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NULL,
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};
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#endif /* _DEVICE_TABLE_C_ */
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