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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 | |||
1705 | cejka | 29 | /** @addtogroup ia64mm |
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> |
903 | jermar | 36 | #include <arch/mm/asid.h> |
37 | #include <arch/mm/page.h> |
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756 | jermar | 38 | #include <genarch/mm/as_ht.h> |
830 | jermar | 39 | #include <genarch/mm/asid_fifo.h> |
903 | jermar | 40 | #include <mm/asid.h> |
41 | #include <arch.h> |
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42 | #include <arch/barrier.h> |
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43 | #include <synch/spinlock.h> |
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756 | jermar | 44 | |
45 | /** Architecture dependent address space init. */ |
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46 | void as_arch_init(void) |
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47 | { |
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48 | as_operations = &as_ht_operations; |
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830 | jermar | 49 | asid_fifo_init(); |
756 | jermar | 50 | } |
903 | jermar | 51 | |
52 | /** Prepare registers for switching to another address space. |
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53 | * |
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54 | * @param as Address space. |
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55 | */ |
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56 | void as_install_arch(as_t *as) |
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57 | { |
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58 | ipl_t ipl; |
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59 | region_register rr; |
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60 | int i; |
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61 | |||
62 | ipl = interrupts_disable(); |
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63 | spinlock_lock(&as->lock); |
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64 | |||
65 | ASSERT(as->asid != ASID_INVALID); |
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66 | |||
67 | /* |
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68 | * Load respective ASID (7 consecutive RIDs) to |
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69 | * region registers. |
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70 | */ |
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71 | for (i = 0; i < REGION_REGISTERS; i++) { |
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72 | if (i == VRN_KERNEL) |
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73 | continue; |
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74 | |||
75 | rr.word = rr_read(i); |
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76 | rr.map.ve = false; /* disable VHPT walker */ |
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77 | rr.map.rid = ASID2RID(as->asid, i); |
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78 | rr.map.ps = PAGE_WIDTH; |
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79 | rr_write(i, rr.word); |
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80 | } |
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81 | srlz_d(); |
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82 | srlz_i(); |
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83 | |||
84 | spinlock_unlock(&as->lock); |
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85 | interrupts_restore(ipl); |
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86 | } |
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1702 | cejka | 87 | |
88 | /** @} |
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89 | */ |
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90 |