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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 | #include <config.h> |
44 | 44 | ||
45 | #ifdef CONFIG_SMP |
- | |
46 | /** Entries locked in DTLB of BSP. |
- | |
47 | * |
- | |
48 | * Application processors need to have the same locked entries in their DTLBs as |
- | |
49 | * 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_MAX_LOCKED_ENTRIES]; |
- | |
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. */ |
45 | /** Perform sparc64 specific initialization of paging. */ |
62 | void page_arch_init(void) |
46 | void page_arch_init(void) |
63 | { |
47 | { |
64 | if (config.cpu_active == 1) { |
48 | if (config.cpu_active == 1) { |
65 | page_mapping_operations = &ht_mapping_operations; |
49 | page_mapping_operations = &ht_mapping_operations; |
66 | } else { |
- | |
67 | - | ||
68 | #ifdef CONFIG_SMP |
- | |
69 | unsigned 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, |
- | |
77 | bsp_locked_dtlb_entry[i].pagesize_code, true, |
- | |
78 | false); |
- | |
79 | } |
- | |
80 | #endif |
- | |
81 | - | ||
82 | } |
50 | } |
83 | } |
51 | } |
84 | 52 | ||
85 | /** Map memory-mapped device into virtual memory. |
53 | /** Map memory-mapped device into virtual memory. |
86 | * |
54 | * |
Line 95... | Line 63... | ||
95 | * |
63 | * |
96 | * @return Virtual address of the page where the device is mapped. |
64 | * @return Virtual address of the page where the device is mapped. |
97 | */ |
65 | */ |
98 | uintptr_t hw_map(uintptr_t physaddr, size_t size) |
66 | uintptr_t hw_map(uintptr_t physaddr, size_t size) |
99 | { |
67 | { |
100 | unsigned int order; |
- | |
101 | unsigned int i; |
- | |
102 | - | ||
103 | ASSERT(config.cpu_active == 1); |
- | |
104 | - | ||
105 | struct { |
- | |
106 | int pagesize_code; |
- | |
107 | size_t increment; |
- | |
108 | count_t count; |
- | |
109 | } sizemap[] = { |
- | |
110 | { PAGESIZE_8K, 0, 1 }, /* 8K */ |
- | |
111 | { PAGESIZE_8K, MMU_PAGE_SIZE, 2 }, /* 16K */ |
- | |
112 | { PAGESIZE_8K, MMU_PAGE_SIZE, 4 }, /* 32K */ |
- | |
113 | { PAGESIZE_64K, 0, 1}, /* 64K */ |
- | |
114 | { PAGESIZE_64K, 8 * MMU_PAGE_SIZE, 2 }, /* 128K */ |
- | |
115 | { PAGESIZE_64K, 8 * MMU_PAGE_SIZE, 4 }, /* 256K */ |
- | |
116 | { PAGESIZE_512K, 0, 1 }, /* 512K */ |
- | |
117 | { PAGESIZE_512K, 64 * MMU_PAGE_SIZE, 2 }, /* 1M */ |
- | |
118 | { PAGESIZE_512K, 64 * MMU_PAGE_SIZE, 4 }, /* 2M */ |
- | |
119 | { PAGESIZE_4M, 0, 1 }, /* 4M */ |
- | |
120 | { PAGESIZE_4M, 512 * MMU_PAGE_SIZE, 2 } /* 8M */ |
- | |
121 | }; |
- | |
122 | - | ||
123 | ASSERT(ALIGN_UP(physaddr, MMU_PAGE_SIZE) == physaddr); |
- | |
124 | ASSERT(size <= 8 * 1024 * 1024); |
- | |
125 | - | ||
126 | if (size <= MMU_FRAME_SIZE) |
- | |
127 | order = 0; |
- | |
128 | else |
- | |
129 | order = (fnzb64(size - 1) + 1) - MMU_FRAME_WIDTH; |
- | |
130 | - | ||
131 | /* |
- | |
132 | * Use virtual addresses that are beyond the limit of physical memory. |
- | |
133 | * Thus, the physical address space will not be wasted by holes created |
- | |
134 | * by frame_alloc(). |
- | |
135 | */ |
- | |
136 | ASSERT(PA2KA(last_frame)); |
- | |
137 | uintptr_t virtaddr = ALIGN_UP(PA2KA(last_frame), |
- | |
138 | 1 << (order + FRAME_WIDTH)); |
- | |
139 | last_frame = ALIGN_UP(KA2PA(virtaddr) + size, |
- | |
140 | 1 << (order + FRAME_WIDTH)); |
- | |
141 | - | ||
142 | for (i = 0; i < sizemap[order].count; i++) { |
- | |
143 | /* |
- | |
144 | * First, insert the mapping into DTLB. |
- | |
145 | */ |
- | |
146 | dtlb_insert_mapping(virtaddr + i * sizemap[order].increment, |
- | |
147 | physaddr + i * sizemap[order].increment, |
- | |
148 | sizemap[order].pagesize_code, true, false); |
- | |
149 | - | ||
150 | #ifdef CONFIG_SMP |
- | |
151 | /* |
- | |
152 | * Second, save the information about the mapping for APs. |
- | |
153 | */ |
- | |
154 | bsp_locked_dtlb_entry[bsp_locked_dtlb_entries].virt_page = |
- | |
155 | virtaddr + i * sizemap[order].increment; |
- | |
156 | bsp_locked_dtlb_entry[bsp_locked_dtlb_entries].phys_page = |
- | |
157 | physaddr + i * sizemap[order].increment; |
- | |
158 | bsp_locked_dtlb_entry[bsp_locked_dtlb_entries].pagesize_code = |
- | |
159 | sizemap[order].pagesize_code; |
- | |
160 | bsp_locked_dtlb_entries++; |
- | |
161 | #endif |
- | |
162 | } |
- | |
163 | - | ||
164 | return virtaddr; |
68 | return PA2KA(physaddr); |
165 | } |
69 | } |
166 | 70 | ||
167 | /** @} |
71 | /** @} |
168 | */ |
72 | */ |