Subversion Repositories HelenOS-historic

Rev

Rev 895 | Rev 898 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 895 Rev 897
Line 107... Line 107...
107 
   
 107 
   
108 
    tlb_invalidate_all();
 108 
    tlb_invalidate_all();
109 
 
 109 
 
110 
    dmmu_enable();
 110 
    dmmu_enable();
111 
    immu_enable();
 111 
    immu_enable();
112 
   
 112 
}
113 
    /*
 - 
 
114 
     * Quick hack: map frame buffer
 - 
 
115 
     */
 - 
 
116 
    fr.address = FB_PHYS_ADDRESS;
 - 
 
117 
    pg.address = FB_VIRT_ADDRESS;
 - 
 
118 
 
 - 
 
119 
    tag.value = ASID_KERNEL;
 - 
 
120 
    tag.vpn = pg.vpn;
 - 
 
121 
 
 - 
 
122 
    dtlb_tag_access_write(tag.value);
 - 
 
123 
 
 113 
 
124 
    data.value = 0;
 114 
/** Insert privileged mapping into DMMU TLB.
125 
    data.v = true;
 115 
 *
126 
    data.size = PAGESIZE_4M;
 116 
 * @param page Virtual page address.
127 
    data.pfn = fr.pfn;
 117 
 * @param frame Physical frame address.
128 
    data.l = true;
 118 
 * @param pagesize Page size.
- 
 
 119 
 * @param locked True for permanent mappings, false otherwise.
- 
 
 120 
 * @param cacheable True if the mapping is cacheable, false otherwise.
129 
    data.cp = 0;
 121 
 */
- 
 
 122 
void dtlb_insert_mapping(__address page, __address frame, int pagesize, bool locked, bool cacheable)
- 
 
 123 
{
130 
    data.cv = 0;
 124 
    tlb_tag_access_reg_t tag;
131 
    data.p = true;
 125 
    tlb_data_t data;
132 
    data.w = true;
 126 
    page_address_t pg;
133 
    data.g = true;
 127 
    frame_address_t fr;
134 
 
 128 
 
135 
    dtlb_data_in_write(data.value);
 - 
 
136 
   
 - 
 
137 
    /*
 - 
 
138 
     * Quick hack: map keyboard
 - 
 
139 
     */
 - 
 
140 
    fr.address = KBD_PHYS_ADDRESS;
 129 
    pg.address = page;
141 
    pg.address = KBD_VIRT_ADDRESS;
 130 
    fr.address = frame;
142 
 
 131 
 
143 
    tag.value = ASID_KERNEL;
 132 
    tag.value = ASID_KERNEL;
144 
    tag.vpn = pg.vpn;
 133 
    tag.vpn = pg.vpn;
145 
 
 134 
 
146 
    dtlb_tag_access_write(tag.value);
 135 
    dtlb_tag_access_write(tag.value);
147 
 
 136 
 
148 
    data.value = 0;
 137 
    data.value = 0;
149 
    data.v = true;
 138 
    data.v = true;
150 
    data.size = PAGESIZE_8K;
 139 
    data.size = pagesize;
151 
    data.pfn = fr.pfn;
 140 
    data.pfn = fr.pfn;
152 
    data.l = true;
 141 
    data.l = locked;
153 
    data.cp = 0;
 142 
    data.cp = cacheable;
154 
    data.cv = 0;
 143 
    data.cv = cacheable;
155 
    data.p = true;
 144 
    data.p = true;
156 
    data.w = true;
 145 
    data.w = true;
157 
    data.g = true;
 146 
    data.g = true;
158 
 
 147 
 
159 
    dtlb_data_in_write(data.value);
 148 
    dtlb_data_in_write(data.value);
Line 167... Line 156...
167 
 
 156 
 
168 
/** DTLB miss handler. */
 157 
/** DTLB miss handler. */
169 
void fast_data_access_mmu_miss(void)
 158 
void fast_data_access_mmu_miss(void)
170 
{
 159 
{
171 
    tlb_tag_access_reg_t tag;
 160 
    tlb_tag_access_reg_t tag;
172 
    tlb_data_t data;
 - 
 
173 
    __address tpc;
 161 
    __address tpc;
174 
    char *tpc_str;
 162 
    char *tpc_str;
175 
 
 163 
 
176 
    tag.value = dtlb_tag_access_read();
 164 
    tag.value = dtlb_tag_access_read();
177 
    if (tag.context != ASID_KERNEL || tag.vpn == 0) {
 165 
    if (tag.context != ASID_KERNEL || tag.vpn == 0) {
Line 184... Line 172...
184 
    }
 172 
    }
185 
 
 173 
 
186 
    /*
 174 
    /*
187 
     * Identity map piece of faulting kernel address space.
 175 
     * Identity map piece of faulting kernel address space.
188 
     */
 176 
     */
189 
    data.value = 0;
 - 
 
190 
    data.v = true;
 - 
 
191 
    data.size = PAGESIZE_8K;
 - 
 
192 
    data.pfn = tag.vpn;
 - 
 
193 
    data.l = false;
 - 
 
194 
    data.cp = 1;
 - 
 
195 
    data.cv = 1;
 - 
 
196 
    data.p = true;
 - 
 
197 
    data.w = true;
 - 
 
198 
    data.g = true;
 - 
 
199 
 
 - 
 
200 
    dtlb_data_in_write(data.value);
 177 
    dtlb_insert_mapping(tag.vpn * PAGE_SIZE, tag.vpn * FRAME_SIZE, PAGESIZE_8K, false, true);
201 
}
 178 
}
202 
 
 179 
 
203 
/** DTLB protection fault handler. */
 180 
/** DTLB protection fault handler. */
204 
void fast_data_access_protection(void)
 181 
void fast_data_access_protection(void)
205 
{
 182 
{