Subversion Repositories HelenOS

Rev

Rev 4420 | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 4420 Rev 4537
Line 52... Line 52...
52
 
52
 
53
#ifdef CONFIG_TSB
53
#ifdef CONFIG_TSB
54
#include <arch/mm/tsb.h>
54
#include <arch/mm/tsb.h>
55
#endif
55
#endif
56
 
56
 
57
static void dtlb_pte_copy(pte_t *, index_t, bool);
57
static void dtlb_pte_copy(pte_t *, size_t, bool);
58
static void itlb_pte_copy(pte_t *, index_t);
58
static void itlb_pte_copy(pte_t *, size_t);
59
static void do_fast_instruction_access_mmu_miss_fault(istate_t *, const char *);
59
static void do_fast_instruction_access_mmu_miss_fault(istate_t *, const char *);
60
static void do_fast_data_access_mmu_miss_fault(istate_t *, tlb_tag_access_reg_t,
60
static void do_fast_data_access_mmu_miss_fault(istate_t *, tlb_tag_access_reg_t,
61
    const char *);
61
    const char *);
62
static void do_fast_data_access_protection_fault(istate_t *,
62
static void do_fast_data_access_protection_fault(istate_t *,
63
    tlb_tag_access_reg_t, const char *);
63
    tlb_tag_access_reg_t, const char *);
Line 128... Line 128...
128
 * @param t         Page Table Entry to be copied.
128
 * @param t         Page Table Entry to be copied.
129
 * @param index     Zero if lower 8K-subpage, one if higher 8K-subpage.
129
 * @param index     Zero if lower 8K-subpage, one if higher 8K-subpage.
130
 * @param ro        If true, the entry will be created read-only, regardless
130
 * @param ro        If true, the entry will be created read-only, regardless
131
 *          of its w field.
131
 *          of its w field.
132
 */
132
 */
133
void dtlb_pte_copy(pte_t *t, index_t index, bool ro)
133
void dtlb_pte_copy(pte_t *t, size_t index, bool ro)
134
{
134
{
135
    tlb_tag_access_reg_t tag;
135
    tlb_tag_access_reg_t tag;
136
    tlb_data_t data;
136
    tlb_data_t data;
137
    page_address_t pg;
137
    page_address_t pg;
138
    frame_address_t fr;
138
    frame_address_t fr;
Line 165... Line 165...
165
/** Copy PTE to ITLB.
165
/** Copy PTE to ITLB.
166
 *
166
 *
167
 * @param t     Page Table Entry to be copied.
167
 * @param t     Page Table Entry to be copied.
168
 * @param index     Zero if lower 8K-subpage, one if higher 8K-subpage.
168
 * @param index     Zero if lower 8K-subpage, one if higher 8K-subpage.
169
 */
169
 */
170
void itlb_pte_copy(pte_t *t, index_t index)
170
void itlb_pte_copy(pte_t *t, size_t index)
171
{
171
{
172
    tlb_tag_access_reg_t tag;
172
    tlb_tag_access_reg_t tag;
173
    tlb_data_t data;
173
    tlb_data_t data;
174
    page_address_t pg;
174
    page_address_t pg;
175
    frame_address_t fr;
175
    frame_address_t fr;
Line 198... Line 198...
198
 
198
 
199
/** ITLB miss handler. */
199
/** ITLB miss handler. */
200
void fast_instruction_access_mmu_miss(unative_t unused, istate_t *istate)
200
void fast_instruction_access_mmu_miss(unative_t unused, istate_t *istate)
201
{
201
{
202
    uintptr_t page_16k = ALIGN_DOWN(istate->tpc, PAGE_SIZE);
202
    uintptr_t page_16k = ALIGN_DOWN(istate->tpc, PAGE_SIZE);
203
    index_t index = (istate->tpc >> MMU_PAGE_WIDTH) % MMU_PAGES_PER_PAGE;
203
    size_t index = (istate->tpc >> MMU_PAGE_WIDTH) % MMU_PAGES_PER_PAGE;
204
    pte_t *t;
204
    pte_t *t;
205
 
205
 
206
    page_table_lock(AS, true);
206
    page_table_lock(AS, true);
207
    t = page_mapping_find(AS, page_16k);
207
    t = page_mapping_find(AS, page_16k);
208
    if (t && PTE_EXECUTABLE(t)) {
208
    if (t && PTE_EXECUTABLE(t)) {
Line 243... Line 243...
243
 */
243
 */
244
void fast_data_access_mmu_miss(tlb_tag_access_reg_t tag, istate_t *istate)
244
void fast_data_access_mmu_miss(tlb_tag_access_reg_t tag, istate_t *istate)
245
{
245
{
246
    uintptr_t page_8k;
246
    uintptr_t page_8k;
247
    uintptr_t page_16k;
247
    uintptr_t page_16k;
248
    index_t index;
248
    size_t index;
249
    pte_t *t;
249
    pte_t *t;
250
 
250
 
251
    page_8k = (uint64_t) tag.vpn << MMU_PAGE_WIDTH;
251
    page_8k = (uint64_t) tag.vpn << MMU_PAGE_WIDTH;
252
    page_16k = ALIGN_DOWN(page_8k, PAGE_SIZE);
252
    page_16k = ALIGN_DOWN(page_8k, PAGE_SIZE);
253
    index = tag.vpn % MMU_PAGES_PER_PAGE;
253
    index = tag.vpn % MMU_PAGES_PER_PAGE;
Line 307... Line 307...
307
 * @param istate    Interrupted state saved on the stack.
307
 * @param istate    Interrupted state saved on the stack.
308
 */
308
 */
309
void fast_data_access_protection(tlb_tag_access_reg_t tag, istate_t *istate)
309
void fast_data_access_protection(tlb_tag_access_reg_t tag, istate_t *istate)
310
{
310
{
311
    uintptr_t page_16k;
311
    uintptr_t page_16k;
312
    index_t index;
312
    size_t index;
313
    pte_t *t;
313
    pte_t *t;
314
 
314
 
315
    page_16k = ALIGN_DOWN((uint64_t) tag.vpn << MMU_PAGE_WIDTH, PAGE_SIZE);
315
    page_16k = ALIGN_DOWN((uint64_t) tag.vpn << MMU_PAGE_WIDTH, PAGE_SIZE);
316
    index = tag.vpn % MMU_PAGES_PER_PAGE;   /* 16K-page emulation */
316
    index = tag.vpn % MMU_PAGES_PER_PAGE;   /* 16K-page emulation */
317
 
317
 
Line 577... Line 577...
577
 *
577
 *
578
 * @param asid      Address Space ID.
578
 * @param asid      Address Space ID.
579
 * @param page      First page which to sweep out from ITLB and DTLB.
579
 * @param page      First page which to sweep out from ITLB and DTLB.
580
 * @param cnt       Number of ITLB and DTLB entries to invalidate.
580
 * @param cnt       Number of ITLB and DTLB entries to invalidate.
581
 */
581
 */
582
void tlb_invalidate_pages(asid_t asid, uintptr_t page, count_t cnt)
582
void tlb_invalidate_pages(asid_t asid, uintptr_t page, size_t cnt)
583
{
583
{
584
    unsigned int i;
584
    unsigned int i;
585
    tlb_context_reg_t pc_save, ctx;
585
    tlb_context_reg_t pc_save, ctx;
586
   
586
   
587
    /* switch to nucleus because we are mapped by the primary context */
587
    /* switch to nucleus because we are mapped by the primary context */