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[/] [openrisc/] [trunk/] [gnu-old/] [gdb-7.1/] [sim/] [ppc/] [hw_core.c] - Rev 828
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/* 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 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_CORE_C_ #define _HW_CORE_C_ #include "device_table.h" #include "corefile.h" /* DEVICE core - root of the device tree DESCRIPTION The core device positioned at the root of the device tree appears to its child devices as a normal device just like every other device in the tree. Internally it is implemented using a core object. Requests to attach (or detach) address spaces are passed to that core object. Requests to transfer (DMA) data are reflected back down the device tree using the core_map data transfer methods. PROPERTIES None. */ static void hw_core_init_address_callback(device *me) { core *memory = (core*)device_data(me); core_init(memory); } static void hw_core_attach_address_callback(device *me, attach_type attach, int space, unsigned_word addr, unsigned nr_bytes, access_type access, device *client) /*callback/default*/ { core *memory = (core*)device_data(me); if (space != 0) error("core_attach_address_callback() invalid address space\n"); core_attach(memory, attach, space, access, addr, nr_bytes, client); } static unsigned hw_core_dma_read_buffer_callback(device *me, void *dest, int space, unsigned_word addr, unsigned nr_bytes) { core *memory = (core*)device_data(me); return core_map_read_buffer(core_readable(memory), dest, addr, nr_bytes); } static unsigned hw_core_dma_write_buffer_callback(device *me, const void *source, int space, unsigned_word addr, unsigned nr_bytes, int violate_read_only_section) { core *memory = (core*)device_data(me); core_map *map = (violate_read_only_section ? core_readable(memory) : core_writeable(memory)); return core_map_write_buffer(map, source, addr, nr_bytes); } static device_callbacks const hw_core_callbacks = { { hw_core_init_address_callback, }, { hw_core_attach_address_callback, }, { NULL, }, /* IO */ { hw_core_dma_read_buffer_callback, hw_core_dma_write_buffer_callback, }, { NULL, }, /* interrupt */ { generic_device_unit_decode, generic_device_unit_encode, generic_device_address_to_attach_address, generic_device_size_to_attach_size, }, }; static void * hw_core_create(const char *name, const device_unit *unit_address, const char *args) { core *memory = core_create(); return memory; } const device_descriptor hw_core_device_descriptor[] = { { "core", hw_core_create, &hw_core_callbacks }, { NULL }, }; #endif /* _HW_CORE_C_ */
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