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| Rev 3618 | Rev 3742 | ||
|---|---|---|---|
| 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 *t, index_t index, bool ro); |
57 | static void dtlb_pte_copy(pte_t *, index_t, bool); |
| 58 | static void itlb_pte_copy(pte_t *t, index_t index); |
58 | static void itlb_pte_copy(pte_t *, index_t); |
| 59 | static void do_fast_instruction_access_mmu_miss_fault(istate_t *istate, |
59 | static void do_fast_instruction_access_mmu_miss_fault(istate_t *, const char *); |
| 60 | const char *str); |
- | |
| 61 | static void do_fast_data_access_mmu_miss_fault(istate_t *istate, |
60 | static void do_fast_data_access_mmu_miss_fault(istate_t *, tlb_tag_access_reg_t, |
| 62 | tlb_tag_access_reg_t tag, const char *str); |
61 | const char *); |
| 63 | static void do_fast_data_access_protection_fault(istate_t *istate, |
62 | static void do_fast_data_access_protection_fault(istate_t *, |
| 64 | tlb_tag_access_reg_t tag, const char *str); |
63 | tlb_tag_access_reg_t, const char *); |
| 65 | 64 | ||
| 66 | char *context_encoding[] = { |
65 | char *context_encoding[] = { |
| 67 | "Primary", |
66 | "Primary", |
| 68 | "Secondary", |
67 | "Secondary", |
| 69 | "Nucleus", |
68 | "Nucleus", |
| Line 126... | Line 125... | ||
| 126 | 125 | ||
| 127 | /** Copy PTE to TLB. |
126 | /** Copy PTE to TLB. |
| 128 | * |
127 | * |
| 129 | * @param t Page Table Entry to be copied. |
128 | * @param t Page Table Entry to be copied. |
| 130 | * @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. |
| 131 | * @param ro If true, the entry will be created read-only, regardless of its |
130 | * @param ro If true, the entry will be created read-only, regardless |
| 132 | * w field. |
131 | * of its w field. |
| 133 | */ |
132 | */ |
| 134 | void dtlb_pte_copy(pte_t *t, index_t index, bool ro) |
133 | void dtlb_pte_copy(pte_t *t, index_t index, bool ro) |
| 135 | { |
134 | { |
| 136 | tlb_tag_access_reg_t tag; |
135 | tlb_tag_access_reg_t tag; |
| 137 | tlb_data_t data; |
136 | tlb_data_t data; |
| Line 233... | Line 232... | ||
| 233 | /** DTLB miss handler. |
232 | /** DTLB miss handler. |
| 234 | * |
233 | * |
| 235 | * Note that some faults (e.g. kernel faults) were already resolved by the |
234 | * Note that some faults (e.g. kernel faults) were already resolved by the |
| 236 | * low-level, assembly language part of the fast_data_access_mmu_miss handler. |
235 | * low-level, assembly language part of the fast_data_access_mmu_miss handler. |
| 237 | * |
236 | * |
| 238 | * @param tag Content of the TLB Tag Access register as it existed when the |
237 | * @param tag Content of the TLB Tag Access register as it existed |
| 239 | * trap happened. This is to prevent confusion created by clobbered |
238 | * when the trap happened. This is to prevent confusion |
| 240 | * Tag Access register during a nested DTLB miss. |
239 | * created by clobbered Tag Access register during a nested |
| - | 240 | * DTLB miss. |
|
| 241 | * @param istate Interrupted state saved on the stack. |
241 | * @param istate Interrupted state saved on the stack. |
| 242 | */ |
242 | */ |
| 243 | void fast_data_access_mmu_miss(tlb_tag_access_reg_t tag, istate_t *istate) |
243 | void fast_data_access_mmu_miss(tlb_tag_access_reg_t tag, istate_t *istate) |
| 244 | { |
244 | { |
| 245 | uintptr_t va; |
245 | uintptr_t va; |
| Line 285... | Line 285... | ||
| 285 | } |
285 | } |
| 286 | } |
286 | } |
| 287 | 287 | ||
| 288 | /** DTLB protection fault handler. |
288 | /** DTLB protection fault handler. |
| 289 | * |
289 | * |
| 290 | * @param tag Content of the TLB Tag Access register as it existed when the |
290 | * @param tag Content of the TLB Tag Access register as it existed |
| 291 | * trap happened. This is to prevent confusion created by clobbered |
291 | * when the trap happened. This is to prevent confusion |
| 292 | * Tag Access register during a nested DTLB miss. |
292 | * created by clobbered Tag Access register during a nested |
| - | 293 | * DTLB miss. |
|
| 293 | * @param istate Interrupted state saved on the stack. |
294 | * @param istate Interrupted state saved on the stack. |
| 294 | */ |
295 | */ |
| 295 | void fast_data_access_protection(tlb_tag_access_reg_t tag, istate_t *istate) |
296 | void fast_data_access_protection(tlb_tag_access_reg_t tag, istate_t *istate) |
| 296 | { |
297 | { |
| 297 | uintptr_t va; |
298 | uintptr_t va; |
| Line 483... | Line 484... | ||
| 483 | } |
484 | } |
| 484 | 485 | ||
| 485 | #if defined (US3) |
486 | #if defined (US3) |
| 486 | /** Invalidates given TLB entry if and only if it is non-locked or global. |
487 | /** Invalidates given TLB entry if and only if it is non-locked or global. |
| 487 | * |
488 | * |
| 488 | * @param tlb |
- | |
| 489 | * TLB number (one of TLB_DSMALL, TLB_DBIG_0, TLB_DBIG_1, |
489 | * @param tlb TLB number (one of TLB_DSMALL, TLB_DBIG_0, TLB_DBIG_1, |
| 490 | * TLB_ISMALL, TLB_IBIG) |
490 | * TLB_ISMALL, TLB_IBIG). |
| 491 | * @param entry entry index within the given TLB |
491 | * @param entry Entry index within the given TLB. |
| 492 | */ |
492 | */ |
| 493 | static void tlb_invalidate_entry(int tlb, index_t entry) |
493 | static void tlb_invalidate_entry(int tlb, index_t entry) |
| 494 | { |
494 | { |
| 495 | tlb_data_t d; |
495 | tlb_data_t d; |
| 496 | tlb_tag_read_reg_t t; |
496 | tlb_tag_read_reg_t t; |