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1 | /* |
1 | /* |
2 | * Copyright (C) 2005 Jakub Jermar |
2 | * Copyright (C) 2005 Jakub Jermar |
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 sparc64mm |
29 | /** @addtogroup sparc64mm |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
34 | 34 | ||
35 | #include <arch/mm/page.h> |
35 | #include <arch/mm/page.h> |
36 | #include <arch/mm/tlb.h> |
36 | #include <arch/mm/tlb.h> |
37 | #include <genarch/mm/page_ht.h> |
37 | #include <genarch/mm/page_ht.h> |
38 | #include <mm/frame.h> |
38 | #include <mm/frame.h> |
39 | #include <arch/mm/frame.h> |
39 | #include <arch/mm/frame.h> |
40 | #include <bitops.h> |
40 | #include <bitops.h> |
41 | #include <debug.h> |
41 | #include <debug.h> |
42 | #include <align.h> |
42 | #include <align.h> |
- | 43 | #include <config.h> |
|
43 | 44 | ||
- | 45 | #ifdef CONFIG_SMP |
|
- | 46 | /** Entries locked in DTLB of BSP. |
|
- | 47 | * |
|
- | 48 | * Application processors need to have the same locked entries |
|
- | 49 | * in their DTLBs as the bootstrap processor. |
|
- | 50 | */ |
|
- | 51 | static struct { |
|
- | 52 | uintptr_t virt_page; |
|
- | 53 | uintptr_t phys_page; |
|
- | 54 | int pagesize_code; |
|
- | 55 | } bsp_locked_dtlb_entry[DTLB_ENTRY_COUNT]; |
|
- | 56 | ||
- | 57 | /** Number of entries in bsp_locked_dtlb_entry array. */ |
|
- | 58 | static count_t bsp_locked_dtlb_entries = 0; |
|
- | 59 | #endif /* CONFIG_SMP */ |
|
- | 60 | ||
- | 61 | /** Perform sparc64 specific initialization of paging. */ |
|
44 | void page_arch_init(void) |
62 | void page_arch_init(void) |
45 | { |
63 | { |
- | 64 | if (config.cpu_active == 1) { |
|
46 | page_mapping_operations = &ht_mapping_operations; |
65 | page_mapping_operations = &ht_mapping_operations; |
- | 66 | } else { |
|
- | 67 | ||
- | 68 | #ifdef CONFIG_SMP |
|
- | 69 | int i; |
|
- | 70 | ||
- | 71 | /* |
|
- | 72 | * Copy locked DTLB entries from the BSP. |
|
- | 73 | */ |
|
- | 74 | for (i = 0; i < bsp_locked_dtlb_entries; i++) { |
|
- | 75 | dtlb_insert_mapping(bsp_locked_dtlb_entry[i].virt_page, |
|
- | 76 | bsp_locked_dtlb_entry[i].phys_page, bsp_locked_dtlb_entry[i].pagesize_code, |
|
- | 77 | true, false); |
|
- | 78 | } |
|
- | 79 | #endif |
|
- | 80 | ||
- | 81 | } |
|
47 | } |
82 | } |
48 | 83 | ||
49 | /** Map memory-mapped device into virtual memory. |
84 | /** Map memory-mapped device into virtual memory. |
50 | * |
85 | * |
51 | * So far, only DTLB is used to map devices into memory. |
86 | * So far, only DTLB is used to map devices into memory. |
52 | * Chances are that there will be only a limited amount of |
87 | * Chances are that there will be only a limited amount of |
53 | * devices that the kernel itself needs to lock in DTLB. |
88 | * devices that the kernel itself needs to lock in DTLB. |
54 | * |
89 | * |
55 | * @param physaddr Physical address of the page where the |
90 | * @param physaddr Physical address of the page where the |
56 | * device is located. Must be at least |
91 | * device is located. Must be at least |
57 | * page-aligned. |
92 | * page-aligned. |
58 | * @param size Size of the device's registers. Must not |
93 | * @param size Size of the device's registers. Must not |
59 | * exceed 4M and must include extra space |
94 | * exceed 4M and must include extra space |
60 | * caused by the alignment. |
95 | * caused by the alignment. |
61 | * |
96 | * |
62 | * @return Virtual address of the page where the device is |
97 | * @return Virtual address of the page where the device is |
63 | * mapped. |
98 | * mapped. |
64 | */ |
99 | */ |
65 | uintptr_t hw_map(uintptr_t physaddr, size_t size) |
100 | uintptr_t hw_map(uintptr_t physaddr, size_t size) |
66 | { |
101 | { |
67 | unsigned int order; |
102 | unsigned int order; |
68 | int i; |
103 | int i; |
69 | 104 | ||
- | 105 | ASSERT(config.cpu_active == 1); |
|
- | 106 | ||
70 | struct { |
107 | struct { |
71 | int pagesize; |
108 | int pagesize_code; |
72 | size_t increment; |
109 | size_t increment; |
73 | count_t count; |
110 | count_t count; |
74 | } sizemap[] = { |
111 | } sizemap[] = { |
75 | { PAGESIZE_8K, 0, 1 }, /* 8K */ |
112 | { PAGESIZE_8K, 0, 1 }, /* 8K */ |
76 | { PAGESIZE_8K, PAGE_SIZE, 2 }, /* 16K */ |
113 | { PAGESIZE_8K, PAGE_SIZE, 2 }, /* 16K */ |
77 | { PAGESIZE_8K, PAGE_SIZE, 4 }, /* 32K */ |
114 | { PAGESIZE_8K, PAGE_SIZE, 4 }, /* 32K */ |
78 | { PAGESIZE_64K, 0, 1}, /* 64K */ |
115 | { PAGESIZE_64K, 0, 1}, /* 64K */ |
79 | { PAGESIZE_64K, 8*PAGE_SIZE, 2 }, /* 128K */ |
116 | { PAGESIZE_64K, 8*PAGE_SIZE, 2 }, /* 128K */ |
80 | { PAGESIZE_64K, 8*PAGE_SIZE, 4 }, /* 256K */ |
117 | { PAGESIZE_64K, 8*PAGE_SIZE, 4 }, /* 256K */ |
81 | { PAGESIZE_512K, 0, 1 }, /* 512K */ |
118 | { PAGESIZE_512K, 0, 1 }, /* 512K */ |
82 | { PAGESIZE_512K, 64*PAGE_SIZE, 2 }, /* 1M */ |
119 | { PAGESIZE_512K, 64*PAGE_SIZE, 2 }, /* 1M */ |
83 | { PAGESIZE_512K, 64*PAGE_SIZE, 4 }, /* 2M */ |
120 | { PAGESIZE_512K, 64*PAGE_SIZE, 4 }, /* 2M */ |
84 | { PAGESIZE_4M, 0, 1 } /* 4M */ |
121 | { PAGESIZE_4M, 0, 1 } /* 4M */ |
85 | }; |
122 | }; |
86 | 123 | ||
87 | ASSERT(ALIGN_UP(physaddr, PAGE_SIZE) == physaddr); |
124 | ASSERT(ALIGN_UP(physaddr, PAGE_SIZE) == physaddr); |
88 | ASSERT(size <= 4*1024*1024); |
125 | ASSERT(size <= 4*1024*1024); |
89 | 126 | ||
90 | if (size <= FRAME_SIZE) |
127 | if (size <= FRAME_SIZE) |
91 | order = 0; |
128 | order = 0; |
92 | else |
129 | else |
93 | order = (fnzb64(size - 1) + 1) - FRAME_WIDTH; |
130 | order = (fnzb64(size - 1) + 1) - FRAME_WIDTH; |
94 | 131 | ||
95 | /* |
132 | /* |
96 | * Use virtual addresses that are beyond the limit of physical memory. |
133 | * Use virtual addresses that are beyond the limit of physical memory. |
97 | * Thus, the physical address space will not be wasted by holes created |
134 | * Thus, the physical address space will not be wasted by holes created |
98 | * by frame_alloc(). |
135 | * by frame_alloc(). |
99 | */ |
136 | */ |
100 | ASSERT(last_frame); |
137 | ASSERT(last_frame); |
101 | uintptr_t virtaddr = ALIGN_UP(last_frame, 1<<(order + FRAME_WIDTH)); |
138 | uintptr_t virtaddr = ALIGN_UP(last_frame, 1<<(order + FRAME_WIDTH)); |
102 | last_frame = ALIGN_UP(virtaddr + size, 1<<(order + FRAME_WIDTH)); |
139 | last_frame = ALIGN_UP(virtaddr + size, 1<<(order + FRAME_WIDTH)); |
103 | 140 | ||
104 | for (i = 0; i < sizemap[order].count; i++) |
141 | for (i = 0; i < sizemap[order].count; i++) { |
- | 142 | /* |
|
- | 143 | * First, insert the mapping into DTLB. |
|
- | 144 | */ |
|
105 | dtlb_insert_mapping(virtaddr + i*sizemap[order].increment, |
145 | dtlb_insert_mapping(virtaddr + i*sizemap[order].increment, |
106 | physaddr + i*sizemap[order].increment, |
146 | physaddr + i*sizemap[order].increment, |
107 | sizemap[order].pagesize, true, false); |
147 | sizemap[order].pagesize_code, true, false); |
- | 148 | ||
- | 149 | #ifdef CONFIG_SMP |
|
- | 150 | /* |
|
- | 151 | * Second, save the information about the mapping for APs. |
|
- | 152 | */ |
|
- | 153 | bsp_locked_dtlb_entry[bsp_locked_dtlb_entries].virt_page = virtaddr + i*sizemap[order].increment; |
|
- | 154 | bsp_locked_dtlb_entry[bsp_locked_dtlb_entries].phys_page = physaddr + i*sizemap[order].increment; |
|
- | 155 | bsp_locked_dtlb_entry[bsp_locked_dtlb_entries].pagesize_code = sizemap[order].pagesize_code; |
|
- | 156 | bsp_locked_dtlb_entries++; |
|
- | 157 | #endif |
|
- | 158 | } |
|
108 | 159 | ||
109 | return virtaddr; |
160 | return virtaddr; |
110 | } |
161 | } |
111 | 162 | ||
112 | /** @} |
163 | /** @} |
113 | */ |
164 | */ |
114 | 165 |