Pull in preliminary versions of hw instances and handles from ../ppc
This commit is contained in:
Andrew Cagney
parent
48f83b1a2e
commit
451a9c0587
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@ -65,6 +65,10 @@ hw-device.c
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hw-device.h
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hw-events.c
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hw-events.h
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hw-handles.c
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hw-handles.h
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hw-instances.c
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hw-instances.h
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hw-main.h
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hw-ports.c
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hw-ports.h
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@ -0,0 +1,237 @@
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/* This file is part of the program psim.
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Copyright (C) 1994-1995,1997-1998, 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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struct hw_handle_mapping {
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cell_word external;
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struct hw *phandle;
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struct hw_instance *ihandle;
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struct hw_handle_mapping *next;
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};
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struct hw_handle_data {
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int nr_mappings;
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struct hw_handle_mapping *mappings;
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};
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void
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create_hw_handle_data (struct hw *hw)
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{
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if (hw_parent (hw) == NULL)
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{
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hw->handles_of_hw = HW_ZALLOC (hw, struct hw_handle_data);
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}
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else
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{
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hw->handles_of_hw = hw_root (hw)->handles_of_hw;
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}
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}
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void
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delete_hw_handle_data (struct hw *hw)
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{
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/* NULL */
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}
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#if 0
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void
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hw_handle_init (struct hw *hw)
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{
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struct hw_handle_mapping *current_map = db->mappings;
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if (current_map != NULL)
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{
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db->nr_mappings = db->mappings->external;
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/* verify that the mappings that were not removed are in
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sequence down to nr 1 */
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while (current_map->next != NULL)
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{
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if (current_map->external != current_map->next->external + 1)
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error ("hw_handle: hw_handle database possibly corrupt");
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current_map = current_map->next;
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}
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ASSERT (current_map->next == NULL);
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if (current_map->external != 1)
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error ("hw_handle: hw_handle database possibly corrupt");
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}
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else
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{
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db->nr_mappings = 0;
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}
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}
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#endif
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struct hw_instance *
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hw_handle_ihandle2 (struct hw *hw,
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cell_word external)
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{
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struct hw_handle_data *db = hw->handles_of_hw;
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struct hw_handle_mapping *current_map = db->mappings;
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while (current_map != NULL)
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{
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if (current_map->external == external)
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return current_map->ihandle;
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current_map = current_map->next;
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}
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return (void*)0;
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}
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struct hw *
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hw_handle_phandle2 (struct hw *hw,
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cell_word external)
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{
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struct hw_handle_data *db = hw->handles_of_hw;
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struct hw_handle_mapping *current_map = db->mappings;
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while (current_map != NULL)
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{
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if (current_map->external == external)
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return current_map->phandle;
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current_map = current_map->next;
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}
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return (void*)0;
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}
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cell_word
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hw_handle_2ihandle (struct hw *hw,
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struct hw_instance *internal)
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{
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struct hw_handle_data *db = hw->handles_of_hw;
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struct hw_handle_mapping *current_map = db->mappings;
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while (current_map != NULL)
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{
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if (current_map->ihandle == internal)
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return current_map->external;
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current_map = current_map->next;
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}
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return 0;
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}
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cell_word
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hw_handle_2phandle (struct hw *hw,
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struct hw *internal)
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{
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struct hw_handle_data *db = hw->handles_of_hw;
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struct hw_handle_mapping *current_map = db->mappings;
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while (current_map != NULL)
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{
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if (current_map->phandle == internal)
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return current_map->external;
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current_map = current_map->next;
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}
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return 0;
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}
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void
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hw_handle_add_ihandle (struct hw *hw,
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struct hw_instance *internal)
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{
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struct hw_handle_data *db = hw->handles_of_hw;
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if (hw_handle_2ihandle (hw, internal) != NULL)
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{
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hw_abort (hw, "attempting to add an ihandle already in the data base");
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}
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else
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{
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/* insert at the front making things in decending order */
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struct hw_handle_mapping *new_map = ZALLOC (struct hw_handle_mapping);
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new_map->next = db->mappings;
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new_map->ihandle = internal;
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db->nr_mappings += 1;
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new_map->external = db->nr_mappings;
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db->mappings = new_map;
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}
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}
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void
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hw_handle_add_phandle (struct hw *hw,
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struct hw *internal)
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{
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struct hw_handle_data *db = hw->handles_of_hw;
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if (hw_handle_2phandle (hw, internal) != NULL)
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{
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hw_abort (hw, "attempting to add a phandle already in the data base");
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}
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else
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{
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/* insert at the front making things in decending order */
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struct hw_handle_mapping *new_map = ZALLOC (struct hw_handle_mapping);
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new_map->next = db->mappings;
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new_map->phandle = internal;
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db->nr_mappings += 1;
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new_map->external = db->nr_mappings;
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db->mappings = new_map;
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}
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}
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void
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hw_handle_remove_ihandle (struct hw *hw,
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struct hw_instance *internal)
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{
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struct hw_handle_data *db = hw->handles_of_hw;
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struct hw_handle_mapping **current_map = &db->mappings;
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while (*current_map != NULL)
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{
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if ((*current_map)->ihandle == internal)
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{
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struct hw_handle_mapping *delete = *current_map;
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*current_map = delete->next;
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zfree (delete);
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return;
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}
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current_map = &(*current_map)->next;
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}
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hw_abort (hw, "attempt to remove nonexistant ihandle");
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}
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void
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hw_handle_remove_phandle (struct hw *hw,
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struct hw *internal)
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{
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struct hw_handle_data *db = hw->handles_of_hw;
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struct hw_handle_mapping **current_map = &db->mappings;
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while (*current_map != NULL)
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{
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if ((*current_map)->phandle == internal)
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{
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struct hw_handle_mapping *delete = *current_map;
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*current_map = delete->next;
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zfree (delete);
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return;
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}
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current_map = &(*current_map)->next;
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}
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hw_abort (hw, "attempt to remove nonexistant phandle");
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}
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@ -0,0 +1,63 @@
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/* This file is part of the program psim.
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Copyright (C) 1994-1995,1997-1998, 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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#ifndef HW_HANDLES_H
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#define HW_HANDLES_H
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/* Export a capability (handle) data base that maps between internal
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data values and those given to a simulation. */
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cell_word hw_handle_2ihandle
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(struct hw *db,
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struct hw_instance *instance);
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struct hw_instance *hw_handle_ihandle2
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(struct hw *db,
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cell_word external);
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void hw_handle_add_ihandle
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(struct hw *db,
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struct hw_instance *instance);
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void hw_handle_remove_ihandle
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(struct hw *db,
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struct hw_instance *instance);
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cell_word hw_handle_2phandle
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(struct hw *db,
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struct hw *hw);
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struct hw *hw_handle_phandle2
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(struct hw *db,
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cell_word external);
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void hw_handle_add_phandle
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(struct hw *db,
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struct hw *hw);
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void hw_handle_remove_phandle
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(struct hw *db,
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struct hw *hw);
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#endif
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@ -0,0 +1,285 @@
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/* This file is part of the program psim.
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Copyright (C) 1994-1998, 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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#define ASSERT(X)
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struct hw_instance_data {
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hw_finish_instance_method *to_finish;
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struct hw_instance *instances;
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};
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static hw_finish_instance_method abort_hw_finish_instance;
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void
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create_hw_instance_data (struct hw *me)
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{
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me->instances_of_hw = HW_ZALLOC (me, struct hw_instance_data);
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set_hw_finish_instance (me, abort_hw_finish_instance);
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}
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void
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delete_hw_instance_data (struct hw *me)
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{
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/* NOP */
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}
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static void
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abort_hw_finish_instance (struct hw *hw,
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struct hw_instance *instance)
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{
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hw_abort (hw, "no instance finish method");
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}
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void
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set_hw_finish_instance (struct hw *me,
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hw_finish_instance_method *finish)
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{
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me->instances_of_hw->to_finish = finish;
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}
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#if 0
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void
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clean_hw_instances (struct hw *me)
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{
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struct hw_instance **instance = &me->instances;
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while (*instance != NULL)
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{
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struct hw_instance *old_instance = *instance;
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hw_instance_delete (old_instance);
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instance = &me->instances;
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}
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}
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#endif
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void
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hw_instance_delete (struct hw_instance *instance)
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{
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#if 1
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hw_abort (hw_instance_hw (instance), "not implemented");
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#else
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struct hw *me = hw_instance_hw (instance);
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if (instance->to_instance_delete == NULL)
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hw_abort (me, "no delete method");
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instance->method->delete(instance);
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if (instance->args != NULL)
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zfree (instance->args);
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if (instance->path != NULL)
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zfree (instance->path);
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if (instance->child == NULL)
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{
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/* only remove leaf nodes */
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struct hw_instance **curr = &me->instances;
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while (*curr != instance)
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{
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ASSERT (*curr != NULL);
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curr = &(*curr)->next;
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}
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*curr = instance->next;
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}
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else
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{
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/* check it isn't in the instance list */
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struct hw_instance *curr = me->instances;
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while (curr != NULL)
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{
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ASSERT(curr != instance);
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curr = curr->next;
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}
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/* unlink the child */
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ASSERT (instance->child->parent == instance);
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instance->child->parent = NULL;
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}
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cap_remove (me->ihandles, instance);
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zfree (instance);
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#endif
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}
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static int
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panic_hw_instance_read (struct hw_instance *instance,
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void *addr,
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unsigned_word len)
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{
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hw_abort (hw_instance_hw (instance), "no read method");
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return -1;
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}
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static int
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panic_hw_instance_write (struct hw_instance *instance,
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const void *addr,
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unsigned_word len)
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{
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hw_abort (hw_instance_hw (instance), "no write method");
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return -1;
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}
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static int
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panic_hw_instance_seek (struct hw_instance *instance,
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unsigned_word pos_hi,
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unsigned_word pos_lo)
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{
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hw_abort (hw_instance_hw (instance), "no seek method");
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return -1;
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}
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int
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hw_instance_call_method (struct hw_instance *instance,
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const char *method_name,
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int n_stack_args,
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unsigned_cell stack_args[/*n_stack_args*/],
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int n_stack_returns,
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unsigned_cell stack_returns[/*n_stack_args*/])
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{
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#if 1
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hw_abort (hw_instance_hw (instance), "not implemented");
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return -1;
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#else
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struct hw *me = instance->owner;
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const hw_instance_methods *method = instance->method->methods;
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if (method == NULL)
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{
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hw_abort (me, "no methods (want %s)", method_name);
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}
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while (method->name != NULL)
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{
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if (strcmp(method->name, method_name) == 0)
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{
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return method->method (instance,
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n_stack_args, stack_args,
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n_stack_returns, stack_returns);
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}
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method++;
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}
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hw_abort (me, "no %s method", method_name);
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return 0;
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#endif
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}
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#define set_hw_instance_read(instance, method)\
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((instance)->to_instance_read = (method))
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#define set_hw_instance_write(instance, method)\
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((instance)->to_instance_write = (method))
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#define set_hw_instance_seek(instance, method)\
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((instance)->to_instance_seek = (method))
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#if 0
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static void
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set_hw_instance_finish (struct hw *me,
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hw_instance_finish_method *method)
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{
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if (me->instances_of_hw == NULL)
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me->instances_of_hw = HW_ZALLOC (me, struct hw_instance_data);
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me->instances_of_hw->to_finish = method;
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}
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#endif
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struct hw_instance *
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hw_instance_create (struct hw *me,
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struct hw_instance *parent,
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const char *path,
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const char *args)
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{
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struct hw_instance *instance = ZALLOC (struct hw_instance);
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/*instance->unit*/
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/* link this instance into the devices list */
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instance->hw_of_instance = me;
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instance->parent_of_instance = NULL;
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/* link this instance into the front of the devices instance list */
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instance->sibling_of_instance = me->instances_of_hw->instances;
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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
|
||||
}
|
||||
|
|
@ -0,0 +1,157 @@
|
|||
/* 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
|
||||
Loading…
Reference in New Issue