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| Rev | Author | Line No. | Line |
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| 1191 | jermar | 1 | /* |
| 3674 | svoboda | 2 | * Copyright (c) 2006 Jakub Jermar, Jakub vana |
| 1191 | jermar | 3 | * All rights reserved. |
| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * |
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| 9 | * - Redistributions of source code must retain the above copyright |
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| 10 | * notice, this list of conditions and the following disclaimer. |
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| 11 | * - Redistributions in binary form must reproduce the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer in the |
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| 13 | * documentation and/or other materials provided with the distribution. |
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| 14 | * - The name of the author may not be used to endorse or promote products |
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| 15 | * derived from this software without specific prior written permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 27 | */ |
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| 28 | |||
| 1731 | jermar | 29 | /** @addtogroup ia64ddi |
| 1702 | cejka | 30 | * @{ |
| 31 | */ |
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| 32 | /** @file |
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| 33 | */ |
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| 34 | |||
| 1191 | jermar | 35 | #include <ddi/ddi.h> |
| 36 | #include <proc/task.h> |
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| 37 | #include <arch/types.h> |
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| 3674 | svoboda | 38 | #include <mm/slab.h> |
| 39 | #include <errno.h> |
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| 1191 | jermar | 40 | |
| 3674 | svoboda | 41 | #define IO_MEMMAP_PAGES 16384 |
| 42 | #define PORTS_PER_PAGE 4 |
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| 43 | |||
| 1191 | jermar | 44 | /** Enable I/O space range for task. |
| 45 | * |
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| 46 | * Interrupts are disabled and task is locked. |
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| 47 | * |
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| 48 | * @param task Task. |
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| 49 | * @param ioaddr Startign I/O space address. |
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| 50 | * @param size Size of the enabled I/O range. |
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| 51 | * |
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| 52 | * @return 0 on success or an error code from errno.h. |
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| 53 | */ |
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| 1780 | jermar | 54 | int ddi_iospace_enable_arch(task_t *task, uintptr_t ioaddr, size_t size) |
| 1191 | jermar | 55 | { |
| 3674 | svoboda | 56 | |
| 57 | if(!task->arch.iomap) |
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| 58 | { |
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| 59 | uint8_t *map; |
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| 60 | task->arch.iomap=malloc(sizeof(bitmap_t),0); |
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| 61 | map=malloc(BITS2BYTES(IO_MEMMAP_PAGES),0); |
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| 62 | if(!map) |
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| 63 | return ENOMEM; |
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| 64 | bitmap_initialize(task->arch.iomap,map,IO_MEMMAP_PAGES); |
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| 65 | bitmap_clear_range(task->arch.iomap,0,IO_MEMMAP_PAGES); |
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| 66 | } |
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| 67 | |||
| 68 | uintptr_t iopage = ioaddr / PORTS_PER_PAGE; |
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| 69 | size = ALIGN_UP (size+ioaddr-4*iopage,PORTS_PER_PAGE); |
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| 70 | bitmap_set_range(task->arch.iomap,iopage,size/4); |
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| 71 | |||
| 72 | |||
| 1191 | jermar | 73 | return 0; |
| 74 | } |
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| 1702 | cejka | 75 | |
| 1731 | jermar | 76 | /** @} |
| 1702 | cejka | 77 | */ |