Subversion Repositories HelenOS

Rev

Rev 3675 | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 3675 Rev 4377
Line 1... Line 1...
1 
/*
 1 
/*
2 
 * Copyright (c) 2005 Jakub Jermar
 2 
 * Copyright (c) 2009 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:
Line 24... Line 24...
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 
 
Line 40... Line 40...
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 
    }
 - 
 
83 
}
 50 
}
84 
 
 51 
 
85 
/** Map memory-mapped device into virtual memory.
 52 
/** Map memory-mapped device into virtual memory.
86 
 *
 53 
 *
87 
 * So far, only DTLB is used to map devices into memory. Chances are that there
 54 
 * We are currently using identity mapping for mapping device registers.
88 
 * will be only a limited amount of devices that the kernel itself needs to
 - 
 
89 
 * lock in DTLB.
 - 
 
90 
 *
 55 
 *
91 
 * @param physaddr Physical address of the page where the device is located.
 56 
 * @param physaddr Physical address of the page where the device is
92 
 *  Must be at least page-aligned.
 57 
 *                 located.
93 
 * @param size Size of the device's registers. Must not exceed 4M and must
 58 
 * @param size     Size of the device's registers.
94 
 *  include extra space caused by the alignment.
 - 
 
95 
 *
 59 
 *
96 
 * @return Virtual address of the page where the device is mapped.
 60 
 * @return Virtual address of the page where the device is mapped.
- 
 
 61 
 *
97 
 */
 62 
 */
98 
uintptr_t hw_map(uintptr_t physaddr, size_t size)
 63 
uintptr_t hw_map(uintptr_t physaddr, size_t size)
99 
{
 64 
{
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;
 65 
    return PA2KA(physaddr);
165 
}
 66 
}
166 
 
 67 
 
167 
/** @}
 68 
/** @}
168 
 */
 69 
 */
169 
 
 -