hw-device.h
hw-events.c
hw-events.h
+hw-handles.c
+hw-handles.h
+hw-instances.c
+hw-instances.h
hw-main.h
hw-ports.c
hw-ports.h
--- /dev/null
+/* This file is part of the program psim.
+
+ Copyright (C) 1994-1995,1997-1998, 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 2 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, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+ */
+
+
+#include "hw-main.h"
+#include "hw-base.h"
+
+
+struct hw_handle_mapping {
+ cell_word external;
+ struct hw *phandle;
+ struct hw_instance *ihandle;
+ struct hw_handle_mapping *next;
+};
+
+
+struct hw_handle_data {
+ int nr_mappings;
+ struct hw_handle_mapping *mappings;
+};
+
+void
+create_hw_handle_data (struct hw *hw)
+{
+ if (hw_parent (hw) == NULL)
+ {
+ hw->handles_of_hw = HW_ZALLOC (hw, struct hw_handle_data);
+ }
+ else
+ {
+ hw->handles_of_hw = hw_root (hw)->handles_of_hw;
+ }
+}
+
+void
+delete_hw_handle_data (struct hw *hw)
+{
+ /* NULL */
+}
+
+
+
+#if 0
+void
+hw_handle_init (struct hw *hw)
+{
+ struct hw_handle_mapping *current_map = db->mappings;
+ if (current_map != NULL)
+ {
+ db->nr_mappings = db->mappings->external;
+ /* verify that the mappings that were not removed are in
+ sequence down to nr 1 */
+ while (current_map->next != NULL)
+ {
+ if (current_map->external != current_map->next->external + 1)
+ error ("hw_handle: hw_handle database possibly corrupt");
+ current_map = current_map->next;
+ }
+ ASSERT (current_map->next == NULL);
+ if (current_map->external != 1)
+ error ("hw_handle: hw_handle database possibly corrupt");
+ }
+ else
+ {
+ db->nr_mappings = 0;
+ }
+}
+#endif
+
+
+struct hw_instance *
+hw_handle_ihandle2 (struct hw *hw,
+ cell_word external)
+{
+ struct hw_handle_data *db = hw->handles_of_hw;
+ struct hw_handle_mapping *current_map = db->mappings;
+ while (current_map != NULL)
+ {
+ if (current_map->external == external)
+ return current_map->ihandle;
+ current_map = current_map->next;
+ }
+ return (void*)0;
+}
+
+
+struct hw *
+hw_handle_phandle2 (struct hw *hw,
+ cell_word external)
+{
+ struct hw_handle_data *db = hw->handles_of_hw;
+ struct hw_handle_mapping *current_map = db->mappings;
+ while (current_map != NULL)
+ {
+ if (current_map->external == external)
+ return current_map->phandle;
+ current_map = current_map->next;
+ }
+ return (void*)0;
+}
+
+
+cell_word
+hw_handle_2ihandle (struct hw *hw,
+ struct hw_instance *internal)
+{
+ struct hw_handle_data *db = hw->handles_of_hw;
+ struct hw_handle_mapping *current_map = db->mappings;
+ while (current_map != NULL)
+ {
+ if (current_map->ihandle == internal)
+ return current_map->external;
+ current_map = current_map->next;
+ }
+ return 0;
+}
+
+
+cell_word
+hw_handle_2phandle (struct hw *hw,
+ struct hw *internal)
+{
+ struct hw_handle_data *db = hw->handles_of_hw;
+ struct hw_handle_mapping *current_map = db->mappings;
+ while (current_map != NULL)
+ {
+ if (current_map->phandle == internal)
+ return current_map->external;
+ current_map = current_map->next;
+ }
+ return 0;
+}
+
+
+void
+hw_handle_add_ihandle (struct hw *hw,
+ struct hw_instance *internal)
+{
+ struct hw_handle_data *db = hw->handles_of_hw;
+ if (hw_handle_2ihandle (hw, internal) != NULL)
+ {
+ hw_abort (hw, "attempting to add an ihandle already in the data base");
+ }
+ else
+ {
+ /* insert at the front making things in decending order */
+ struct hw_handle_mapping *new_map = ZALLOC (struct hw_handle_mapping);
+ new_map->next = db->mappings;
+ new_map->ihandle = internal;
+ db->nr_mappings += 1;
+ new_map->external = db->nr_mappings;
+ db->mappings = new_map;
+ }
+}
+
+
+void
+hw_handle_add_phandle (struct hw *hw,
+ struct hw *internal)
+{
+ struct hw_handle_data *db = hw->handles_of_hw;
+ if (hw_handle_2phandle (hw, internal) != NULL)
+ {
+ hw_abort (hw, "attempting to add a phandle already in the data base");
+ }
+ else
+ {
+ /* insert at the front making things in decending order */
+ struct hw_handle_mapping *new_map = ZALLOC (struct hw_handle_mapping);
+ new_map->next = db->mappings;
+ new_map->phandle = internal;
+ db->nr_mappings += 1;
+ new_map->external = db->nr_mappings;
+ db->mappings = new_map;
+ }
+}
+
+
+void
+hw_handle_remove_ihandle (struct hw *hw,
+ struct hw_instance *internal)
+{
+ struct hw_handle_data *db = hw->handles_of_hw;
+ struct hw_handle_mapping **current_map = &db->mappings;
+ while (*current_map != NULL)
+ {
+ if ((*current_map)->ihandle == internal)
+ {
+ struct hw_handle_mapping *delete = *current_map;
+ *current_map = delete->next;
+ zfree (delete);
+ return;
+ }
+ current_map = &(*current_map)->next;
+ }
+ hw_abort (hw, "attempt to remove nonexistant ihandle");
+}
+
+
+void
+hw_handle_remove_phandle (struct hw *hw,
+ struct hw *internal)
+{
+ struct hw_handle_data *db = hw->handles_of_hw;
+ struct hw_handle_mapping **current_map = &db->mappings;
+ while (*current_map != NULL)
+ {
+ if ((*current_map)->phandle == internal)
+ {
+ struct hw_handle_mapping *delete = *current_map;
+ *current_map = delete->next;
+ zfree (delete);
+ return;
+ }
+ current_map = &(*current_map)->next;
+ }
+ hw_abort (hw, "attempt to remove nonexistant phandle");
+}
+
+
--- /dev/null
+/* This file is part of the program psim.
+
+ Copyright (C) 1994-1995,1997-1998, 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 2 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, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+ */
+
+
+#ifndef HW_HANDLES_H
+#define HW_HANDLES_H
+
+
+/* Export a capability (handle) data base that maps between internal
+ data values and those given to a simulation. */
+
+
+cell_word hw_handle_2ihandle
+(struct hw *db,
+ struct hw_instance *instance);
+
+struct hw_instance *hw_handle_ihandle2
+(struct hw *db,
+ cell_word external);
+
+void hw_handle_add_ihandle
+(struct hw *db,
+ struct hw_instance *instance);
+
+void hw_handle_remove_ihandle
+(struct hw *db,
+ struct hw_instance *instance);
+
+
+cell_word hw_handle_2phandle
+(struct hw *db,
+ struct hw *hw);
+
+struct hw *hw_handle_phandle2
+(struct hw *db,
+ cell_word external);
+
+void hw_handle_add_phandle
+(struct hw *db,
+ struct hw *hw);
+
+void hw_handle_remove_phandle
+(struct hw *db,
+ struct hw *hw);
+
+#endif
--- /dev/null
+/* This file is part of the program psim.
+
+ Copyright (C) 1994-1998, 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 2 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, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+ */
+
+
+#include "hw-main.h"
+#include "hw-base.h"
+
+#define ASSERT(X)
+
+struct hw_instance_data {
+ hw_finish_instance_method *to_finish;
+ struct hw_instance *instances;
+};
+
+static hw_finish_instance_method abort_hw_finish_instance;
+
+void
+create_hw_instance_data (struct hw *me)
+{
+ me->instances_of_hw = HW_ZALLOC (me, struct hw_instance_data);
+ set_hw_finish_instance (me, abort_hw_finish_instance);
+}
+
+void
+delete_hw_instance_data (struct hw *me)
+{
+ /* NOP */
+}
+
+
+static void
+abort_hw_finish_instance (struct hw *hw,
+ struct hw_instance *instance)
+{
+ hw_abort (hw, "no instance finish method");
+}
+
+void
+set_hw_finish_instance (struct hw *me,
+ hw_finish_instance_method *finish)
+{
+ me->instances_of_hw->to_finish = finish;
+}
+
+
+#if 0
+void
+clean_hw_instances (struct hw *me)
+{
+ struct hw_instance **instance = &me->instances;
+ while (*instance != NULL)
+ {
+ struct hw_instance *old_instance = *instance;
+ hw_instance_delete (old_instance);
+ instance = &me->instances;
+ }
+}
+#endif
+
+
+void
+hw_instance_delete (struct hw_instance *instance)
+{
+#if 1
+ hw_abort (hw_instance_hw (instance), "not implemented");
+#else
+ struct hw *me = hw_instance_hw (instance);
+ if (instance->to_instance_delete == NULL)
+ hw_abort (me, "no delete method");
+ instance->method->delete(instance);
+ if (instance->args != NULL)
+ zfree (instance->args);
+ if (instance->path != NULL)
+ zfree (instance->path);
+ if (instance->child == NULL)
+ {
+ /* only remove leaf nodes */
+ struct hw_instance **curr = &me->instances;
+ while (*curr != instance)
+ {
+ ASSERT (*curr != NULL);
+ curr = &(*curr)->next;
+ }
+ *curr = instance->next;
+ }
+ else
+ {
+ /* check it isn't in the instance list */
+ struct hw_instance *curr = me->instances;
+ while (curr != NULL)
+ {
+ ASSERT(curr != instance);
+ curr = curr->next;
+ }
+ /* unlink the child */
+ ASSERT (instance->child->parent == instance);
+ instance->child->parent = NULL;
+ }
+ cap_remove (me->ihandles, instance);
+ zfree (instance);
+#endif
+}
+
+
+static int
+panic_hw_instance_read (struct hw_instance *instance,
+ void *addr,
+ unsigned_word len)
+{
+ hw_abort (hw_instance_hw (instance), "no read method");
+ return -1;
+}
+
+
+
+static int
+panic_hw_instance_write (struct hw_instance *instance,
+ const void *addr,
+ unsigned_word len)
+{
+ hw_abort (hw_instance_hw (instance), "no write method");
+ return -1;
+}
+
+
+static int
+panic_hw_instance_seek (struct hw_instance *instance,
+ unsigned_word pos_hi,
+ unsigned_word pos_lo)
+{
+ hw_abort (hw_instance_hw (instance), "no seek method");
+ return -1;
+}
+
+
+int
+hw_instance_call_method (struct hw_instance *instance,
+ const char *method_name,
+ int n_stack_args,
+ unsigned_cell stack_args[/*n_stack_args*/],
+ int n_stack_returns,
+ unsigned_cell stack_returns[/*n_stack_args*/])
+{
+#if 1
+ hw_abort (hw_instance_hw (instance), "not implemented");
+ return -1;
+#else
+ struct hw *me = instance->owner;
+ const hw_instance_methods *method = instance->method->methods;
+ if (method == NULL)
+ {
+ hw_abort (me, "no methods (want %s)", method_name);
+ }
+ while (method->name != NULL)
+ {
+ if (strcmp(method->name, method_name) == 0)
+ {
+ return method->method (instance,
+ n_stack_args, stack_args,
+ n_stack_returns, stack_returns);
+ }
+ method++;
+ }
+ hw_abort (me, "no %s method", method_name);
+ return 0;
+#endif
+}
+
+
+#define set_hw_instance_read(instance, method)\
+((instance)->to_instance_read = (method))
+
+#define set_hw_instance_write(instance, method)\
+((instance)->to_instance_write = (method))
+
+#define set_hw_instance_seek(instance, method)\
+((instance)->to_instance_seek = (method))
+
+
+#if 0
+static void
+set_hw_instance_finish (struct hw *me,
+ hw_instance_finish_method *method)
+{
+ if (me->instances_of_hw == NULL)
+ me->instances_of_hw = HW_ZALLOC (me, struct hw_instance_data);
+ me->instances_of_hw->to_finish = method;
+}
+#endif
+
+
+struct hw_instance *
+hw_instance_create (struct hw *me,
+ struct hw_instance *parent,
+ const char *path,
+ const char *args)
+{
+ struct hw_instance *instance = ZALLOC (struct hw_instance);
+ /*instance->unit*/
+ /* link this instance into the devices list */
+ instance->hw_of_instance = me;
+ instance->parent_of_instance = NULL;
+ /* link this instance into the front of the devices instance list */
+ instance->sibling_of_instance = me->instances_of_hw->instances;
+ me->instances_of_hw->instances = instance;
+ if (parent != NULL)
+ {
+ ASSERT (parent->child_of_instance == NULL);
+ parent->child_of_instance = instance;
+ instance->parent_of_instance = parent;
+ }
+ instance->args_of_instance = hw_strdup (me, args);
+ instance->path_of_instance = hw_strdup (me, path);
+ set_hw_instance_read (instance, panic_hw_instance_read);
+ set_hw_instance_write (instance, panic_hw_instance_write);
+ set_hw_instance_seek (instance, panic_hw_instance_seek);
+ hw_handle_add_ihandle (me, instance);
+ me->instances_of_hw->to_finish (me, instance);
+ return instance;
+}
+
+
+struct hw_instance *
+hw_instance_interceed (struct hw_instance *parent,
+ const char *path,
+ const char *args)
+{
+#if 1
+ return NULL;
+#else
+ struct hw_instance *instance = ZALLOC (struct hw_instance);
+ /*instance->unit*/
+ /* link this instance into the devices list */
+ if (me != NULL)
+ {
+ ASSERT (parent == NULL);
+ instance->hw_of_instance = me;
+ instance->parent_of_instance = NULL;
+ /* link this instance into the front of the devices instance list */
+ instance->sibling_of_instance = me->instances_of_hw->instances;
+ me->instances_of_hw->instances = instance;
+ }
+ if (parent != NULL)
+ {
+ struct hw_instance **previous;
+ ASSERT (parent->child_of_instance == NULL);
+ parent->child_of_instance = instance;
+ instance->owner = parent->owner;
+ instance->parent_of_instance = parent;
+ /* in the devices instance list replace the parent instance with
+ this one */
+ instance->next = parent->next;
+ /* replace parent with this new node */
+ previous = &instance->owner->instances;
+ while (*previous != parent)
+ {
+ ASSERT (*previous != NULL);
+ previous = &(*previous)->next;
+ }
+ *previous = instance;
+ }
+ instance->data = data;
+ instance->args = (args == NULL ? NULL : (char *) strdup(args));
+ instance->path = (path == NULL ? NULL : (char *) strdup(path));
+ cap_add (instance->owner->ihandles, instance);
+ return instance;
+#endif
+}
--- /dev/null
+/* This file is part of the program psim.
+
+ Copyright (C) 1994-1998, 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 2 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, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+ */
+
+
+#ifndef HW_INSTANCES_H
+#define HW_INSTANCES_H
+
+/* Instances:
+
+ As with IEEE1275, a device can be opened, creating an instance.
+ Instances provide more abstract interfaces to the underlying
+ hardware. For example, the instance methods for a disk may include
+ code that is able to interpret file systems found on disks. Such
+ methods would there for allow the manipulation of files on the
+ disks file system. The operations would be implemented using the
+ basic block I/O model provided by the disk.
+
+ This model includes methods that faciliate the creation of device
+ instance and (should a given device support it) standard operations
+ on those instances.
+
+ */
+
+
+struct hw_instance;
+
+
+typedef void (hw_finish_instance_method)
+ (struct hw *hw,
+ struct hw_instance *);
+
+extern void set_hw_finish_instance
+(struct hw *hw,
+ hw_finish_instance_method *method);
+
+
+/* construct an instance of the hardware */
+
+struct hw_instance *hw_instance_create
+(struct hw *hw,
+ struct hw_instance *parent,
+ const char *path,
+ const char *args);
+
+struct hw_instance *hw_instance_interceed
+(struct hw_instance *parent,
+ const char *path,
+ const char *args);
+
+void hw_instance_delete
+(struct hw_instance *instance);
+
+
+/* methods applied to an instance of the hw */
+
+typedef int (hw_instance_read_method)
+ (struct hw_instance *instance,
+ void *addr,
+ unsigned_cell len);
+
+#define hw_instance_read(instance, addr, len) \
+((instance)->to_instance_read ((instance), (addr), (len)))
+
+#define set_hw_instance_read(instance, method) \
+((instance)->to_instance_read = (method))
+
+
+typedef int (hw_instance_write_method)
+ (struct hw_instance *instance,
+ const void *addr,
+ unsigned_cell len);
+
+#define hw_instance_write(instance, addr, len) \
+((instance)->to_instance_write ((instance), (addr), (len)))
+
+#define set_hw_instance_write(instance, method) \
+((instance)->to_instance_write = (method))
+
+
+typedef int (hw_instance_seek_method)
+ (struct hw_instance *instance,
+ unsigned_cell pos_hi,
+ unsigned_cell pos_lo);
+
+#define hw_instance_seek(instance, pos_hi, pos_lo) \
+((instance)->to_instance_seek ((instance), (pos_hi), (pos_lo)));
+
+#define set_hw_instance_seek(instance, method) \
+((instance)->to_instance_seek = (method))
+
+
+int hw_instance_call_method
+(struct hw_instance *instance,
+ const char *method,
+ int n_stack_args,
+ unsigned_cell stack_args[/*n_stack_args + 1(NULL)*/],
+ int n_stack_returns,
+ unsigned_cell stack_returns[/*n_stack_returns + 1(NULL)*/]);
+
+
+
+/* the definition of the instance */
+
+#define hw_instance_hw(instance) ((instance)->hw_of_instance + 0)
+
+#define hw_instance_path(instance) ((instance)->path_of_instance + 0)
+
+#define hw_instance_args(instance) ((instance)->args_of_instance)
+
+#define hw_instance_data(instance) ((instance)->data_of_instance)
+
+#define hw_instance_system(instance) (hw_system (hw_instance_hw (instance)))
+
+
+
+/* Finally an instance of a hardware device - keep your grubby little
+ mits off of these internals! :-) */
+
+struct hw_instance {
+
+ void *data_of_instance;
+ char *args_of_instance;
+ char *path_of_instance;
+
+ /* the device that owns the instance */
+ struct hw *hw_of_instance;
+ struct hw_instance *sibling_of_instance;
+
+ /* interposed instance */
+ struct hw_instance *parent_of_instance;
+ struct hw_instance *child_of_instance;
+
+ /* methods */
+ hw_instance_read_method *to_instance_read;
+ hw_instance_write_method *to_instance_write;
+ hw_instance_seek_method *to_instance_seek;
+
+};
+
+#endif
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