306 lines
7.3 KiB
C
306 lines
7.3 KiB
C
/* This file is part of the program psim.
|
|
|
|
Copyright (C) 1994-1996, Andrew Cagney <cagney@highland.com.au>
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, see <http://www.gnu.org/licenses/>.
|
|
|
|
*/
|
|
|
|
|
|
#ifndef _DEVICE_TABLE_C_
|
|
#define _DEVICE_TABLE_C_
|
|
|
|
#include "device_table.h"
|
|
|
|
#include <stdlib.h>
|
|
#include <ctype.h>
|
|
|
|
|
|
/* Helper functions */
|
|
|
|
|
|
/* Go through the devices various reg properties for those that
|
|
specify attach addresses */
|
|
|
|
|
|
void
|
|
generic_device_init_address(device *me)
|
|
{
|
|
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 (device_find_property(me, *reg_property_name) != NULL) {
|
|
reg_property_spec reg;
|
|
int reg_entry;
|
|
for (reg_entry = 0;
|
|
device_find_reg_array_property(me, *reg_property_name, reg_entry,
|
|
®);
|
|
reg_entry++) {
|
|
unsigned_word attach_address;
|
|
int attach_space;
|
|
unsigned attach_size;
|
|
if (!device_address_to_attach_address(device_parent(me),
|
|
®.address,
|
|
&attach_space, &attach_address,
|
|
me))
|
|
continue;
|
|
if (!device_size_to_attach_size(device_parent(me),
|
|
®.size,
|
|
&attach_size, me))
|
|
continue;
|
|
device_attach_address(device_parent(me),
|
|
attach_callback,
|
|
attach_space, attach_address, attach_size,
|
|
access_read_write_exec,
|
|
me);
|
|
nr_valid_reg_properties++;
|
|
}
|
|
/* if first option matches don't try for any others */
|
|
if (reg_property_name == reg_property_names)
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
int
|
|
generic_device_unit_decode(device *bus,
|
|
const char *unit,
|
|
device_unit *phys)
|
|
{
|
|
memset(phys, 0, sizeof(device_unit));
|
|
if (unit == NULL)
|
|
return 0;
|
|
else {
|
|
int nr_cells = 0;
|
|
const int max_nr_cells = device_nr_address_cells(bus);
|
|
while (1) {
|
|
char *end = NULL;
|
|
unsigned long val;
|
|
val = strtoul(unit, &end, 0);
|
|
/* parse error? */
|
|
if (unit == end)
|
|
return -1;
|
|
/* two many cells? */
|
|
if (nr_cells >= max_nr_cells)
|
|
return -1;
|
|
/* save it */
|
|
phys->cells[nr_cells] = val;
|
|
nr_cells++;
|
|
unit = end;
|
|
/* more to follow? */
|
|
if (isspace(*unit) || *unit == '\0')
|
|
break;
|
|
if (*unit != ',')
|
|
return -1;
|
|
unit++;
|
|
}
|
|
if (nr_cells < max_nr_cells) {
|
|
/* shift everything to correct position */
|
|
int i;
|
|
for (i = 1; i <= nr_cells; i++)
|
|
phys->cells[max_nr_cells - i] = phys->cells[nr_cells - i];
|
|
for (i = 0; i < (max_nr_cells - nr_cells); i++)
|
|
phys->cells[i] = 0;
|
|
}
|
|
phys->nr_cells = max_nr_cells;
|
|
return max_nr_cells;
|
|
}
|
|
}
|
|
|
|
int
|
|
generic_device_unit_encode(device *bus,
|
|
const device_unit *phys,
|
|
char *buf,
|
|
int sizeof_buf)
|
|
{
|
|
int i;
|
|
int len;
|
|
char *pos = buf;
|
|
/* skip leading zero's */
|
|
for (i = 0; i < phys->nr_cells; i++) {
|
|
if (phys->cells[i] != 0)
|
|
break;
|
|
}
|
|
/* don't output anything if empty */
|
|
if (phys->nr_cells == 0) {
|
|
strcpy(pos, "");
|
|
len = 0;
|
|
}
|
|
else if (i == phys->nr_cells) {
|
|
/* all zero */
|
|
strcpy(pos, "0");
|
|
len = 1;
|
|
}
|
|
else {
|
|
for (; i < phys->nr_cells; i++) {
|
|
if (pos != buf) {
|
|
strcat(pos, ",");
|
|
pos = strchr(pos, '\0');
|
|
}
|
|
if (phys->cells[i] < 10)
|
|
sprintf(pos, "%ld", (unsigned long)phys->cells[i]);
|
|
else
|
|
sprintf(pos, "0x%lx", (unsigned long)phys->cells[i]);
|
|
pos = strchr(pos, '\0');
|
|
}
|
|
len = pos - buf;
|
|
}
|
|
if (len >= sizeof_buf)
|
|
error("generic_unit_encode - buffer overflow\n");
|
|
return len;
|
|
}
|
|
|
|
int
|
|
generic_device_address_to_attach_address(device *me,
|
|
const device_unit *address,
|
|
int *attach_space,
|
|
unsigned_word *attach_address,
|
|
device *client)
|
|
{
|
|
int i;
|
|
for (i = 0; i < address->nr_cells - 2; i++) {
|
|
if (address->cells[i] != 0)
|
|
device_error(me, "Only 32bit addresses supported");
|
|
}
|
|
if (address->nr_cells >= 2)
|
|
*attach_space = address->cells[address->nr_cells - 2];
|
|
else
|
|
*attach_space = 0;
|
|
*attach_address = address->cells[address->nr_cells - 1];
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
generic_device_size_to_attach_size(device *me,
|
|
const device_unit *size,
|
|
unsigned *nr_bytes,
|
|
device *client)
|
|
{
|
|
int i;
|
|
for (i = 0; i < size->nr_cells - 1; i++) {
|
|
if (size->cells[i] != 0)
|
|
device_error(me, "Only 32bit sizes supported");
|
|
}
|
|
*nr_bytes = size->cells[0];
|
|
return *nr_bytes;
|
|
}
|
|
|
|
|
|
/* ignore/passthrough versions of each function */
|
|
|
|
void
|
|
passthrough_device_address_attach(device *me,
|
|
attach_type attach,
|
|
int space,
|
|
unsigned_word addr,
|
|
unsigned nr_bytes,
|
|
access_type access,
|
|
device *client) /*callback/default*/
|
|
{
|
|
device_attach_address(device_parent(me), attach,
|
|
space, addr, nr_bytes,
|
|
access,
|
|
client);
|
|
}
|
|
|
|
void
|
|
passthrough_device_address_detach(device *me,
|
|
attach_type attach,
|
|
int space,
|
|
unsigned_word addr,
|
|
unsigned nr_bytes,
|
|
access_type access,
|
|
device *client) /*callback/default*/
|
|
{
|
|
device_detach_address(device_parent(me), attach,
|
|
space, addr, nr_bytes, access,
|
|
client);
|
|
}
|
|
|
|
unsigned
|
|
passthrough_device_dma_read_buffer(device *me,
|
|
void *dest,
|
|
int space,
|
|
unsigned_word addr,
|
|
unsigned nr_bytes)
|
|
{
|
|
return device_dma_read_buffer(device_parent(me), dest,
|
|
space, addr, nr_bytes);
|
|
}
|
|
|
|
unsigned
|
|
passthrough_device_dma_write_buffer(device *me,
|
|
const void *source,
|
|
int space,
|
|
unsigned_word addr,
|
|
unsigned nr_bytes,
|
|
int violate_read_only_section)
|
|
{
|
|
return device_dma_write_buffer(device_parent(me), source,
|
|
space, addr,
|
|
nr_bytes,
|
|
violate_read_only_section);
|
|
}
|
|
|
|
int
|
|
ignore_device_unit_decode(device *me,
|
|
const char *unit,
|
|
device_unit *phys)
|
|
{
|
|
memset(phys, 0, sizeof(device_unit));
|
|
return 0;
|
|
}
|
|
|
|
|
|
static const device_callbacks passthrough_callbacks = {
|
|
{ NULL, }, /* init */
|
|
{ passthrough_device_address_attach,
|
|
passthrough_device_address_detach, },
|
|
{ NULL, }, /* IO */
|
|
{ passthrough_device_dma_read_buffer, passthrough_device_dma_write_buffer, },
|
|
{ NULL, }, /* interrupt */
|
|
{ generic_device_unit_decode,
|
|
generic_device_unit_encode, },
|
|
};
|
|
|
|
|
|
static const device_descriptor ob_device_table[] = {
|
|
/* standard OpenBoot devices */
|
|
{ "aliases", NULL, &passthrough_callbacks },
|
|
{ "options", NULL, &passthrough_callbacks },
|
|
{ "chosen", NULL, &passthrough_callbacks },
|
|
{ "packages", NULL, &passthrough_callbacks },
|
|
{ "cpus", NULL, &passthrough_callbacks },
|
|
{ "openprom", NULL, &passthrough_callbacks },
|
|
{ "init", NULL, &passthrough_callbacks },
|
|
{ NULL },
|
|
};
|
|
|
|
const device_descriptor *const device_table[] = {
|
|
ob_device_table,
|
|
#include "hw.c"
|
|
NULL,
|
|
};
|
|
|
|
|
|
#endif /* _DEVICE_TABLE_C_ */
|