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| Rev | Author | Line No. | Line |
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| 756 | jermar | 1 | /* |
| 2 | * Copyright (C) 2006 Jakub Jermar |
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| 3 | * All rights reserved. |
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| 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 | |||
| 1726 | decky | 29 | /** @addtogroup ppc32mm |
| 1702 | cejka | 30 | * @{ |
| 31 | */ |
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| 32 | /** @file |
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| 33 | */ |
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| 34 | |||
| 756 | jermar | 35 | #include <arch/mm/as.h> |
| 36 | #include <genarch/mm/as_pt.h> |
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| 1730 | decky | 37 | #include <genarch/mm/asid_fifo.h> |
| 38 | #include <arch.h> |
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| 756 | jermar | 39 | |
| 40 | /** Architecture dependent address space init. */ |
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| 41 | void as_arch_init(void) |
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| 42 | { |
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| 43 | as_operations = &as_pt_operations; |
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| 1730 | decky | 44 | asid_fifo_init(); |
| 756 | jermar | 45 | } |
| 1702 | cejka | 46 | |
| 1730 | decky | 47 | /** Install address space. |
| 48 | * |
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| 49 | * Install ASID. |
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| 50 | * |
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| 51 | * @param as Address space structure. |
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| 52 | * |
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| 53 | */ |
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| 54 | void as_install_arch(as_t *as) |
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| 55 | { |
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| 56 | asid_t asid; |
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| 57 | ipl_t ipl; |
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| 1780 | jermar | 58 | uint32_t sr; |
| 1730 | decky | 59 | |
| 60 | ipl = interrupts_disable(); |
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| 61 | spinlock_lock(&as->lock); |
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| 62 | |||
| 63 | asid = as->asid; |
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| 64 | |||
| 65 | /* Lower 2 GB, user and supervisor access */ |
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| 66 | for (sr = 0; sr < 8; sr++) { |
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| 67 | asm volatile ( |
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| 68 | "mtsrin %0, %1\n" |
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| 69 | : |
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| 1733 | decky | 70 | : "r" ((0x6000 << 16) + (asid << 4) + sr), "r" (sr << 28) |
| 1730 | decky | 71 | ); |
| 72 | } |
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| 73 | |||
| 74 | /* Upper 2 GB, only supervisor access */ |
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| 75 | for (sr = 8; sr < 16; sr++) { |
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| 76 | asm volatile ( |
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| 77 | "mtsrin %0, %1\n" |
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| 78 | : |
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| 1733 | decky | 79 | : "r" ((0x4000 << 16) + (asid << 4) + sr), "r" (sr << 28) |
| 1730 | decky | 80 | ); |
| 81 | } |
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| 82 | |||
| 83 | spinlock_unlock(&as->lock); |
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| 84 | interrupts_restore(ipl); |
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| 85 | } |
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| 86 | |||
| 1726 | decky | 87 | /** @} |
| 1702 | cejka | 88 | */ |