1/* The common simulator framework for GDB, the GNU Debugger. 2 3 Copyright 2002, 2007 Free Software Foundation, Inc. 4 5 Contributed by Andrew Cagney and Red Hat. 6 7 This file is part of GDB. 8 9 This program is free software; you can redistribute it and/or modify 10 it under the terms of the GNU General Public License as published by 11 the Free Software Foundation; either version 3 of the License, or 12 (at your option) any later version. 13 14 This program is distributed in the hope that it will be useful, 15 but WITHOUT ANY WARRANTY; without even the implied warranty of 16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 GNU General Public License for more details. 18 19 You should have received a copy of the GNU General Public License 20 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 21 22 23#include "sim-main.h" 24#include "hw-main.h" 25 26/* DEVICE 27 28 core - root of the device tree 29 30 DESCRIPTION 31 32 The core device, positioned at the root of the device tree appears 33 to its child devices as a normal device just like every other 34 device in the tree. 35 36 Internally it is implemented using a core object. Requests to 37 attach (or detach) address spaces are passed to that core object. 38 Requests to transfer (DMA) data are reflected back down the device 39 tree using the core_map data transfer methods. 40 41 PROPERTIES 42 43 None. 44 45 */ 46 47 48static void 49dv_core_attach_address_callback (struct hw *me, 50 int level, 51 int space, 52 address_word addr, 53 address_word nr_bytes, 54 struct hw *client) 55{ 56 HW_TRACE ((me, "attach - level=%d, space=%d, addr=0x%lx, nr_bytes=%ld, client=%s", 57 level, space, (unsigned long) addr, (unsigned long) nr_bytes, hw_path (client))); 58 /* NOTE: At preset the space is assumed to be zero. Perhaphs the 59 space should be mapped onto something for instance: space0 - 60 unified memory; space1 - IO memory; ... */ 61 sim_core_attach (hw_system (me), 62 NULL, /*cpu*/ 63 level, 64 access_read_write_exec, 65 space, addr, 66 nr_bytes, 67 0, /* modulo */ 68 client, 69 NULL); 70} 71 72 73static unsigned 74dv_core_dma_read_buffer_callback (struct hw *me, 75 void *dest, 76 int space, 77 unsigned_word addr, 78 unsigned nr_bytes) 79{ 80 return sim_core_read_buffer (hw_system (me), 81 NULL, /*CPU*/ 82 space, /*???*/ 83 dest, 84 addr, 85 nr_bytes); 86} 87 88 89static unsigned 90dv_core_dma_write_buffer_callback (struct hw *me, 91 const void *source, 92 int space, 93 unsigned_word addr, 94 unsigned nr_bytes, 95 int violate_read_only_section) 96{ 97 return sim_core_write_buffer (hw_system (me), 98 NULL, /*cpu*/ 99 space, /*???*/ 100 source, 101 addr, 102 nr_bytes); 103} 104 105 106static void 107dv_core_finish (struct hw *me) 108{ 109 set_hw_attach_address (me, dv_core_attach_address_callback); 110 set_hw_dma_write_buffer (me, dv_core_dma_write_buffer_callback); 111 set_hw_dma_read_buffer (me, dv_core_dma_read_buffer_callback); 112} 113 114const struct hw_descriptor dv_core_descriptor[] = { 115 { "core", dv_core_finish, }, 116 { NULL }, 117}; 118