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1 | /* |
1 | /* |
2 | * Copyright (C) 2006 Jakub Vana |
2 | * Copyright (C) 2006 Jakub Vana |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
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 |
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. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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 |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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 |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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 |
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. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | /** @addtogroup ia64mm |
29 | /** @addtogroup ia64mm |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
34 | 34 | ||
35 | 35 | ||
36 | #include <arch/mm/vhpt.h> |
36 | #include <arch/mm/vhpt.h> |
37 | #include <mm/frame.h> |
37 | #include <mm/frame.h> |
38 | #include <print.h> |
38 | #include <print.h> |
39 | 39 | ||
40 | 40 | ||
41 | static vhpt_entry_t* vhpt_base; |
41 | static vhpt_entry_t* vhpt_base; |
42 | 42 | ||
43 | __address vhpt_set_up(void) |
43 | __address vhpt_set_up(void) |
44 | { |
44 | { |
45 | vhpt_base=(vhpt_entry_t*) frame_alloc(VHPT_WIDTH-FRAME_WIDTH,FRAME_KA); |
45 | vhpt_base = frame_alloc(VHPT_WIDTH-FRAME_WIDTH,FRAME_KA | FRAME_ATOMIC); |
- | 46 | if(!vhpt_base) |
|
46 | if(!vhpt_base) panic("Kernel configured with VHPT but no memory for table."); |
47 | panic("Kernel configured with VHPT but no memory for table."); |
47 | vhpt_invalidate_all(); |
48 | vhpt_invalidate_all(); |
48 | return (__address) vhpt_base; |
49 | return (__address) vhpt_base; |
49 | } |
50 | } |
50 | 51 | ||
51 | 52 | ||
52 | void vhpt_mapping_insert(__address va, asid_t asid, tlb_entry_t entry) |
53 | void vhpt_mapping_insert(__address va, asid_t asid, tlb_entry_t entry) |
53 | { |
54 | { |
54 | region_register rr_save, rr; |
55 | region_register rr_save, rr; |
55 | index_t vrn; |
56 | index_t vrn; |
56 | rid_t rid; |
57 | rid_t rid; |
57 | __u64 tag; |
58 | __u64 tag; |
58 | 59 | ||
59 | vhpt_entry_t *ventry; |
60 | vhpt_entry_t *ventry; |
60 | 61 | ||
61 | 62 | ||
62 | vrn = va >> VRN_SHIFT; |
63 | vrn = va >> VRN_SHIFT; |
63 | rid = ASID2RID(asid, vrn); |
64 | rid = ASID2RID(asid, vrn); |
64 | 65 | ||
65 | rr_save.word = rr_read(vrn); |
66 | rr_save.word = rr_read(vrn); |
66 | rr.word = rr_save.word; |
67 | rr.word = rr_save.word; |
67 | rr.map.rid = rid; |
68 | rr.map.rid = rid; |
68 | rr_write(vrn, rr.word); |
69 | rr_write(vrn, rr.word); |
69 | srlz_i(); |
70 | srlz_i(); |
70 | 71 | ||
71 | ventry = (vhpt_entry_t *) thash(va); |
72 | ventry = (vhpt_entry_t *) thash(va); |
72 | tag = ttag(va); |
73 | tag = ttag(va); |
73 | rr_write(vrn, rr_save.word); |
74 | rr_write(vrn, rr_save.word); |
74 | srlz_i(); |
75 | srlz_i(); |
75 | srlz_d(); |
76 | srlz_d(); |
76 | 77 | ||
77 | ventry->word[0]=entry.word[0]; |
78 | ventry->word[0]=entry.word[0]; |
78 | ventry->word[1]=entry.word[1]; |
79 | ventry->word[1]=entry.word[1]; |
79 | ventry->present.tag.tag_word = tag; |
80 | ventry->present.tag.tag_word = tag; |
80 | 81 | ||
81 | 82 | ||
82 | } |
83 | } |
83 | 84 | ||
84 | void vhpt_invalidate_all() |
85 | void vhpt_invalidate_all() |
85 | { |
86 | { |
86 | memsetb((__address)vhpt_base,1<<VHPT_WIDTH,0); |
87 | memsetb((__address)vhpt_base,1<<VHPT_WIDTH,0); |
87 | } |
88 | } |
88 | 89 | ||
89 | void vhpt_invalidate_asid(asid_t asid) |
90 | void vhpt_invalidate_asid(asid_t asid) |
90 | { |
91 | { |
91 | vhpt_invalidate_all(); |
92 | vhpt_invalidate_all(); |
92 | } |
93 | } |
93 | 94 | ||
94 | 95 | ||
95 | 96 | ||
96 | /** @} |
97 | /** @} |
97 | */ |
98 | */ |
98 | 99 | ||
99 | 100 |