| 1 | /*
|
|---|
| 2 | * Copyright (c) 2006 Jakub Jermar
|
|---|
| 3 | * All rights reserved.
|
|---|
| 4 | *
|
|---|
| 5 | * Redistribution and use in source and binary forms, with or without
|
|---|
| 6 | * modification, are permitted provided that the following conditions
|
|---|
| 7 | * are met:
|
|---|
| 8 | *
|
|---|
| 9 | * - Redistributions of source code must retain the above copyright
|
|---|
| 10 | * notice, this list of conditions and the following disclaimer.
|
|---|
| 11 | * - Redistributions in binary form must reproduce the above copyright
|
|---|
| 12 | * notice, this list of conditions and the following disclaimer in the
|
|---|
| 13 | * documentation and/or other materials provided with the distribution.
|
|---|
| 14 | * - The name of the author may not be used to endorse or promote products
|
|---|
| 15 | * derived from this software without specific prior written permission.
|
|---|
| 16 | *
|
|---|
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|---|
| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|---|
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|---|
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|---|
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|---|
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|---|
| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|---|
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|---|
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|---|
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|---|
| 27 | */
|
|---|
| 28 |
|
|---|
| 29 | /** @addtogroup ia64mm
|
|---|
| 30 | * @{
|
|---|
| 31 | */
|
|---|
| 32 | /** @file
|
|---|
| 33 | */
|
|---|
| 34 |
|
|---|
| 35 | #include <arch/mm/as.h>
|
|---|
| 36 | #include <arch/mm/asid.h>
|
|---|
| 37 | #include <arch/mm/page.h>
|
|---|
| 38 | #include <genarch/mm/as_ht.h>
|
|---|
| 39 | #include <genarch/mm/page_ht.h>
|
|---|
| 40 | #include <genarch/mm/asid_fifo.h>
|
|---|
| 41 | #include <mm/asid.h>
|
|---|
| 42 | #include <arch/barrier.h>
|
|---|
| 43 |
|
|---|
| 44 | /** Architecture dependent address space init. */
|
|---|
| 45 | void as_arch_init(void)
|
|---|
| 46 | {
|
|---|
| 47 | as_operations = &as_ht_operations;
|
|---|
| 48 | asid_fifo_init();
|
|---|
| 49 | }
|
|---|
| 50 |
|
|---|
| 51 | /** Prepare registers for switching to another address space.
|
|---|
| 52 | *
|
|---|
| 53 | * @param as Address space.
|
|---|
| 54 | */
|
|---|
| 55 | void as_install_arch(as_t *as)
|
|---|
| 56 | {
|
|---|
| 57 | region_register_t rr;
|
|---|
| 58 | int i;
|
|---|
| 59 |
|
|---|
| 60 | ASSERT(as->asid != ASID_INVALID);
|
|---|
| 61 |
|
|---|
| 62 | /*
|
|---|
| 63 | * Load respective ASID (7 consecutive RIDs) to
|
|---|
| 64 | * region registers.
|
|---|
| 65 | */
|
|---|
| 66 | for (i = 0; i < REGION_REGISTERS; i++) {
|
|---|
| 67 | if (i == VRN_KERNEL)
|
|---|
| 68 | continue;
|
|---|
| 69 |
|
|---|
| 70 | rr.word = rr_read(i);
|
|---|
| 71 | rr.map.ve = false; /* disable VHPT walker */
|
|---|
| 72 | rr.map.rid = ASID2RID(as->asid, i);
|
|---|
| 73 | rr.map.ps = PAGE_WIDTH;
|
|---|
| 74 | rr_write(i, rr.word);
|
|---|
| 75 | srlz_d();
|
|---|
| 76 | srlz_i();
|
|---|
| 77 | }
|
|---|
| 78 | }
|
|---|
| 79 |
|
|---|
| 80 | /** @}
|
|---|
| 81 | */
|
|---|
