projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| c906108c SS |
1 | /* This file is part of the program psim. |
| 2 | ||
| 3 | Copyright (C) 1994-1996, Andrew Cagney <cagney@highland.com.au> | |
| 4 | ||
| 5 | This program is free software; you can redistribute it and/or modify | |
| 6 | it under the terms of the GNU General Public License as published by | |
| 3fd725ef | 7 | the Free Software Foundation; either version 3 of the License, or |
| c906108c SS |
8 | (at your option) any later version. |
| 9 | ||
| 10 | This program is distributed in the hope that it will be useful, | |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 | GNU General Public License for more details. | |
| 14 | ||
| 15 | You should have received a copy of the GNU General Public License | |
| 51b318de | 16 | along with this program; if not, see <http://www.gnu.org/licenses/>. |
| c906108c SS |
17 | |
| 18 | */ | |
| 19 | ||
| 20 | ||
| 21 | #ifndef _HW_IOBUS_C_ | |
| 22 | #define _HW_IOBUS_C_ | |
| 23 | ||
| 24 | #ifndef STATIC_INLINE_HW_IOBUS | |
| 25 | #define STATIC_INLINE_HW_IOBUS STATIC_INLINE | |
| 26 | #endif | |
| 27 | ||
| 28 | #include "device_table.h" | |
| 29 | ||
| 30 | ||
| 31 | /* DEVICE | |
| 32 | ||
| 33 | iobus - simple bus for attaching devices | |
| 34 | ||
| 35 | DESCRIPTION | |
| 36 | ||
| 37 | IOBUS provides a simple `local' bus for attaching (hanging) | |
| 38 | programmed IO devices from. All child devices are directly mapped | |
| 39 | into this devices parent address space (after checking that the | |
| 40 | attach address lies within the <<iobus>> address range. address). | |
| 41 | ||
| 42 | PROPERTIES | |
| 43 | ||
| 44 | None. | |
| 45 | ||
| 46 | */ | |
| 47 | ||
| 48 | static void | |
| 49 | hw_iobus_attach_address_callback(device *me, | |
| 50 | attach_type type, | |
| 51 | int space, | |
| 52 | unsigned_word addr, | |
| 53 | unsigned nr_bytes, | |
| 54 | access_type access, | |
| 55 | device *client) /*callback/default*/ | |
| 56 | { | |
| 57 | int attach_space; | |
| 58 | unsigned_word attach_address; | |
| 59 | /* sanity check */ | |
| 60 | if (space != 0) | |
| 61 | device_error(me, "invalid space (%d) specified by %s", | |
| 62 | space, device_path(client)); | |
| 63 | /* get the bus address */ | |
| 64 | device_address_to_attach_address(device_parent(me), | |
| 65 | device_unit_address(me), | |
| 66 | &attach_space, | |
| 67 | &attach_address, | |
| 68 | me); | |
| 69 | if (addr < attach_address) | |
| 70 | device_error(me, "Invalid attach address 0x%lx", (unsigned long)addr); | |
| 71 | device_attach_address(device_parent(me), | |
| 72 | type, | |
| 73 | attach_space, | |
| 74 | addr, | |
| 75 | nr_bytes, | |
| 76 | access, | |
| 77 | client); | |
| 78 | } | |
| 79 | ||
| 80 | ||
| 81 | static device_callbacks const hw_iobus_callbacks = { | |
| 82 | { NULL, }, | |
| 83 | { hw_iobus_attach_address_callback, }, | |
| 84 | { NULL, }, /* IO */ | |
| 85 | { NULL, }, /* DMA */ | |
| 86 | { NULL, }, /* interrupt */ | |
| 87 | { generic_device_unit_decode, | |
| 88 | generic_device_unit_encode, | |
| 89 | generic_device_address_to_attach_address, | |
| 90 | generic_device_size_to_attach_size } | |
| 91 | }; | |
| 92 | ||
| 93 | ||
| 94 | const device_descriptor hw_iobus_device_descriptor[] = { | |
| 95 | { "iobus", NULL, &hw_iobus_callbacks }, | |
| 96 | { NULL, }, | |
| 97 | }; | |
| 98 | ||
| 99 | #endif /* _HW_IOBUS_ */ |