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-rw-r--r--arch/sparc64/kernel/itlb_miss.S4
-rw-r--r--arch/sparc64/kernel/ktlb.S12
-rw-r--r--arch/sparc64/kernel/setup.c274
-rw-r--r--arch/sparc64/kernel/sun4v_tlb_miss.S3
-rw-r--r--arch/sparc64/kernel/tsb.S9
-rw-r--r--arch/sparc64/lib/clear_page.S8
-rw-r--r--arch/sparc64/lib/copy_page.S7
-rw-r--r--arch/sparc64/mm/fault.c2
-rw-r--r--arch/sparc64/mm/generic.c40
-rw-r--r--arch/sparc64/mm/init.c703
-rw-r--r--arch/sparc64/mm/tsb.c12
11 files changed, 645 insertions, 429 deletions
diff --git a/arch/sparc64/kernel/itlb_miss.S b/arch/sparc64/kernel/itlb_miss.S
index 97facce27aad..730caa4a1506 100644
--- a/arch/sparc64/kernel/itlb_miss.S
+++ b/arch/sparc64/kernel/itlb_miss.S
@@ -6,9 +6,10 @@
6 nop ! Delay slot (fill me) 6 nop ! Delay slot (fill me)
7 TSB_LOAD_QUAD(%g1, %g4) ! Load TSB entry 7 TSB_LOAD_QUAD(%g1, %g4) ! Load TSB entry
8 cmp %g4, %g6 ! Compare TAG 8 cmp %g4, %g6 ! Compare TAG
9 sethi %hi(_PAGE_EXEC), %g4 ! Setup exec check 9 sethi %hi(PAGE_EXEC), %g4 ! Setup exec check
10 10
11/* ITLB ** ICACHE line 2: TSB compare and TLB load */ 11/* ITLB ** ICACHE line 2: TSB compare and TLB load */
12 ldx [%g4 + %lo(PAGE_EXEC)], %g4
12 bne,pn %xcc, tsb_miss_itlb ! Miss 13 bne,pn %xcc, tsb_miss_itlb ! Miss
13 mov FAULT_CODE_ITLB, %g3 14 mov FAULT_CODE_ITLB, %g3
14 andcc %g5, %g4, %g0 ! Executable? 15 andcc %g5, %g4, %g0 ! Executable?
@@ -16,7 +17,6 @@
16 nop ! Delay slot, fill me 17 nop ! Delay slot, fill me
17 stxa %g5, [%g0] ASI_ITLB_DATA_IN ! Load TLB 18 stxa %g5, [%g0] ASI_ITLB_DATA_IN ! Load TLB
18 retry ! Trap done 19 retry ! Trap done
19 nop
20 20
21/* ITLB ** ICACHE line 3: */ 21/* ITLB ** ICACHE line 3: */
22 nop 22 nop
diff --git a/arch/sparc64/kernel/ktlb.S b/arch/sparc64/kernel/ktlb.S
index 2d333ab4b91b..47dfd45971e8 100644
--- a/arch/sparc64/kernel/ktlb.S
+++ b/arch/sparc64/kernel/ktlb.S
@@ -131,16 +131,8 @@ kvmap_dtlb_4v:
131 brgez,pn %g4, kvmap_dtlb_nonlinear 131 brgez,pn %g4, kvmap_dtlb_nonlinear
132 nop 132 nop
133 133
134#define KERN_HIGHBITS ((_PAGE_VALID|_PAGE_SZ4MB)^0xfffff80000000000) 134 sethi %hi(kern_linear_pte_xor), %g2
135#define KERN_LOWBITS (_PAGE_CP | _PAGE_CV | _PAGE_P | _PAGE_W) 135 ldx [%g2 + %lo(kern_linear_pte_xor)], %g2
136
137 sethi %uhi(KERN_HIGHBITS), %g2
138 or %g2, %ulo(KERN_HIGHBITS), %g2
139 sllx %g2, 32, %g2
140 or %g2, KERN_LOWBITS, %g2
141
142#undef KERN_HIGHBITS
143#undef KERN_LOWBITS
144 136
145 .globl kvmap_linear_patch 137 .globl kvmap_linear_patch
146kvmap_linear_patch: 138kvmap_linear_patch:
diff --git a/arch/sparc64/kernel/setup.c b/arch/sparc64/kernel/setup.c
index f36b257b2e44..ca75f3b26a37 100644
--- a/arch/sparc64/kernel/setup.c
+++ b/arch/sparc64/kernel/setup.c
@@ -64,12 +64,6 @@ struct screen_info screen_info = {
64 16 /* orig-video-points */ 64 16 /* orig-video-points */
65}; 65};
66 66
67/* Typing sync at the prom prompt calls the function pointed to by
68 * the sync callback which I set to the following function.
69 * This should sync all filesystems and return, for now it just
70 * prints out pretty messages and returns.
71 */
72
73void (*prom_palette)(int); 67void (*prom_palette)(int);
74void (*prom_keyboard)(void); 68void (*prom_keyboard)(void);
75 69
@@ -79,263 +73,6 @@ prom_console_write(struct console *con, const char *s, unsigned n)
79 prom_write(s, n); 73 prom_write(s, n);
80} 74}
81 75
82static struct console prom_console = {
83 .name = "prom",
84 .write = prom_console_write,
85 .flags = CON_CONSDEV | CON_ENABLED,
86 .index = -1,
87};
88
89#define PROM_TRUE -1
90#define PROM_FALSE 0
91
92/* Pretty sick eh? */
93int prom_callback(long *args)
94{
95 struct console *cons, *saved_console = NULL;
96 unsigned long flags;
97 char *cmd;
98 extern spinlock_t prom_entry_lock;
99
100 if (!args)
101 return -1;
102 if (!(cmd = (char *)args[0]))
103 return -1;
104
105 /*
106 * The callback can be invoked on the cpu that first dropped
107 * into prom_cmdline after taking the serial interrupt, or on
108 * a slave processor that was smp_captured() if the
109 * administrator has done a switch-cpu inside obp. In either
110 * case, the cpu is marked as in-interrupt. Drop IRQ locks.
111 */
112 irq_exit();
113
114 /* XXX Revisit the locking here someday. This is a debugging
115 * XXX feature so it isnt all that critical. -DaveM
116 */
117 local_irq_save(flags);
118
119 spin_unlock(&prom_entry_lock);
120 cons = console_drivers;
121 while (cons) {
122 unregister_console(cons);
123 cons->flags &= ~(CON_PRINTBUFFER);
124 cons->next = saved_console;
125 saved_console = cons;
126 cons = console_drivers;
127 }
128 register_console(&prom_console);
129 if (!strcmp(cmd, "sync")) {
130 prom_printf("PROM `%s' command...\n", cmd);
131 show_free_areas();
132 if (current->pid != 0) {
133 local_irq_enable();
134 sys_sync();
135 local_irq_disable();
136 }
137 args[2] = 0;
138 args[args[1] + 3] = -1;
139 prom_printf("Returning to PROM\n");
140 } else if (!strcmp(cmd, "va>tte-data")) {
141 unsigned long ctx, va;
142 unsigned long tte = 0;
143 long res = PROM_FALSE;
144
145 ctx = args[3];
146 va = args[4];
147 if (ctx) {
148 /*
149 * Find process owning ctx, lookup mapping.
150 */
151 struct task_struct *p;
152 struct mm_struct *mm = NULL;
153 pgd_t *pgdp;
154 pud_t *pudp;
155 pmd_t *pmdp;
156 pte_t *ptep;
157 pte_t pte;
158
159 for_each_process(p) {
160 mm = p->mm;
161 if (CTX_NRBITS(mm->context) == ctx)
162 break;
163 }
164 if (!mm ||
165 CTX_NRBITS(mm->context) != ctx)
166 goto done;
167
168 pgdp = pgd_offset(mm, va);
169 if (pgd_none(*pgdp))
170 goto done;
171 pudp = pud_offset(pgdp, va);
172 if (pud_none(*pudp))
173 goto done;
174 pmdp = pmd_offset(pudp, va);
175 if (pmd_none(*pmdp))
176 goto done;
177
178 /* Preemption implicitly disabled by virtue of
179 * being called from inside OBP.
180 */
181 ptep = pte_offset_map(pmdp, va);
182 pte = *ptep;
183 if (pte_present(pte)) {
184 tte = pte_val(pte);
185 res = PROM_TRUE;
186 }
187 pte_unmap(ptep);
188 goto done;
189 }
190
191 if ((va >= KERNBASE) && (va < (KERNBASE + (4 * 1024 * 1024)))) {
192 if (tlb_type == spitfire) {
193 extern unsigned long sparc64_kern_pri_context;
194
195 /* Spitfire Errata #32 workaround */
196 __asm__ __volatile__(
197 "stxa %0, [%1] %2\n\t"
198 "flush %%g6"
199 : /* No outputs */
200 : "r" (sparc64_kern_pri_context),
201 "r" (PRIMARY_CONTEXT),
202 "i" (ASI_DMMU));
203 }
204
205 /*
206 * Locked down tlb entry.
207 */
208
209 if (tlb_type == spitfire) {
210 tte = spitfire_get_dtlb_data(SPITFIRE_HIGHEST_LOCKED_TLBENT);
211 res = PROM_TRUE;
212 } else if (tlb_type == cheetah || tlb_type == cheetah_plus) {
213 tte = cheetah_get_ldtlb_data(CHEETAH_HIGHEST_LOCKED_TLBENT);
214 res = PROM_TRUE;
215 }
216 goto done;
217 }
218
219 if (va < PGDIR_SIZE) {
220 /*
221 * vmalloc or prom_inherited mapping.
222 */
223 pgd_t *pgdp;
224 pud_t *pudp;
225 pmd_t *pmdp;
226 pte_t *ptep;
227 pte_t pte;
228 int error;
229
230 if ((va >= LOW_OBP_ADDRESS) && (va < HI_OBP_ADDRESS)) {
231 tte = prom_virt_to_phys(va, &error);
232 if (!error)
233 res = PROM_TRUE;
234 goto done;
235 }
236 pgdp = pgd_offset_k(va);
237 if (pgd_none(*pgdp))
238 goto done;
239 pudp = pud_offset(pgdp, va);
240 if (pud_none(*pudp))
241 goto done;
242 pmdp = pmd_offset(pudp, va);
243 if (pmd_none(*pmdp))
244 goto done;
245
246 /* Preemption implicitly disabled by virtue of
247 * being called from inside OBP.
248 */
249 ptep = pte_offset_kernel(pmdp, va);
250 pte = *ptep;
251 if (pte_present(pte)) {
252 tte = pte_val(pte);
253 res = PROM_TRUE;
254 }
255 goto done;
256 }
257
258 if (va < PAGE_OFFSET) {
259 /*
260 * No mappings here.
261 */
262 goto done;
263 }
264
265 if (va & (1UL << 40)) {
266 /*
267 * I/O page.
268 */
269
270 tte = (__pa(va) & _PAGE_PADDR) |
271 _PAGE_VALID | _PAGE_SZ4MB |
272 _PAGE_E | _PAGE_P | _PAGE_W;
273 res = PROM_TRUE;
274 goto done;
275 }
276
277 /*
278 * Normal page.
279 */
280 tte = (__pa(va) & _PAGE_PADDR) |
281 _PAGE_VALID | _PAGE_SZ4MB |
282 _PAGE_CP | _PAGE_CV | _PAGE_P | _PAGE_W;
283 res = PROM_TRUE;
284
285 done:
286 if (res == PROM_TRUE) {
287 args[2] = 3;
288 args[args[1] + 3] = 0;
289 args[args[1] + 4] = res;
290 args[args[1] + 5] = tte;
291 } else {
292 args[2] = 2;
293 args[args[1] + 3] = 0;
294 args[args[1] + 4] = res;
295 }
296 } else if (!strcmp(cmd, ".soft1")) {
297 unsigned long tte;
298
299 tte = args[3];
300 prom_printf("%lx:\"%s%s%s%s%s\" ",
301 (tte & _PAGE_SOFT) >> 7,
302 tte & _PAGE_MODIFIED ? "M" : "-",
303 tte & _PAGE_ACCESSED ? "A" : "-",
304 tte & _PAGE_READ ? "W" : "-",
305 tte & _PAGE_WRITE ? "R" : "-",
306 tte & _PAGE_PRESENT ? "P" : "-");
307
308 args[2] = 2;
309 args[args[1] + 3] = 0;
310 args[args[1] + 4] = PROM_TRUE;
311 } else if (!strcmp(cmd, ".soft2")) {
312 unsigned long tte;
313
314 tte = args[3];
315 prom_printf("%lx ", (tte & 0x07FC000000000000UL) >> 50);
316
317 args[2] = 2;
318 args[args[1] + 3] = 0;
319 args[args[1] + 4] = PROM_TRUE;
320 } else {
321 prom_printf("unknown PROM `%s' command...\n", cmd);
322 }
323 unregister_console(&prom_console);
324 while (saved_console) {
325 cons = saved_console;
326 saved_console = cons->next;
327 register_console(cons);
328 }
329 spin_lock(&prom_entry_lock);
330 local_irq_restore(flags);
331
332 /*
333 * Restore in-interrupt status for a resume from obp.
334 */
335 irq_enter();
336 return 0;
337}
338
339unsigned int boot_flags = 0; 76unsigned int boot_flags = 0;
340#define BOOTME_DEBUG 0x1 77#define BOOTME_DEBUG 0x1
341#define BOOTME_SINGLE 0x2 78#define BOOTME_SINGLE 0x2
@@ -483,17 +220,6 @@ char reboot_command[COMMAND_LINE_SIZE];
483 220
484static struct pt_regs fake_swapper_regs = { { 0, }, 0, 0, 0, 0 }; 221static struct pt_regs fake_swapper_regs = { { 0, }, 0, 0, 0, 0 };
485 222
486void register_prom_callbacks(void)
487{
488 prom_setcallback(prom_callback);
489 prom_feval(": linux-va>tte-data 2 \" va>tte-data\" $callback drop ; "
490 "' linux-va>tte-data to va>tte-data");
491 prom_feval(": linux-.soft1 1 \" .soft1\" $callback 2drop ; "
492 "' linux-.soft1 to .soft1");
493 prom_feval(": linux-.soft2 1 \" .soft2\" $callback 2drop ; "
494 "' linux-.soft2 to .soft2");
495}
496
497static void __init per_cpu_patch(void) 223static void __init per_cpu_patch(void)
498{ 224{
499#ifdef CONFIG_SMP 225#ifdef CONFIG_SMP
diff --git a/arch/sparc64/kernel/sun4v_tlb_miss.S b/arch/sparc64/kernel/sun4v_tlb_miss.S
index 597359ced233..950ca74b4a58 100644
--- a/arch/sparc64/kernel/sun4v_tlb_miss.S
+++ b/arch/sparc64/kernel/sun4v_tlb_miss.S
@@ -59,7 +59,8 @@ sun4v_itlb_miss:
59 /* Load TSB tag/pte into %g2/%g3 and compare the tag. */ 59 /* Load TSB tag/pte into %g2/%g3 and compare the tag. */
60 ldda [%g1] ASI_QUAD_LDD_PHYS, %g2 60 ldda [%g1] ASI_QUAD_LDD_PHYS, %g2
61 cmp %g2, %g6 61 cmp %g2, %g6
62 sethi %hi(_PAGE_EXEC), %g7 62 sethi %hi(PAGE_EXEC), %g7
63 ldx [%g7 + %lo(PAGE_EXEC)], %g7
63 bne,a,pn %xcc, tsb_miss_page_table_walk 64 bne,a,pn %xcc, tsb_miss_page_table_walk
64 mov FAULT_CODE_ITLB, %g3 65 mov FAULT_CODE_ITLB, %g3
65 andcc %g3, %g7, %g0 66 andcc %g3, %g7, %g0
diff --git a/arch/sparc64/kernel/tsb.S b/arch/sparc64/kernel/tsb.S
index 667dcb077be7..be8f0892d721 100644
--- a/arch/sparc64/kernel/tsb.S
+++ b/arch/sparc64/kernel/tsb.S
@@ -56,10 +56,11 @@ tsb_reload:
56 /* If it is larger than the base page size, don't 56 /* If it is larger than the base page size, don't
57 * bother putting it into the TSB. 57 * bother putting it into the TSB.
58 */ 58 */
59 srlx %g5, 32, %g2 59 sethi %hi(_PAGE_ALL_SZ_BITS), %g7
60 sethi %hi(_PAGE_ALL_SZ_BITS >> 32), %g7 60 ldx [%g7 + %lo(_PAGE_ALL_SZ_BITS)], %g7
61 and %g2, %g7, %g2 61 and %g5, %g7, %g2
62 sethi %hi(_PAGE_SZBITS >> 32), %g7 62 sethi %hi(_PAGE_SZBITS), %g7
63 ldx [%g7 + %lo(_PAGE_SZBITS)], %g7
63 cmp %g2, %g7 64 cmp %g2, %g7
64 bne,a,pn %xcc, tsb_tlb_reload 65 bne,a,pn %xcc, tsb_tlb_reload
65 TSB_STORE(%g1, %g0) 66 TSB_STORE(%g1, %g0)
diff --git a/arch/sparc64/lib/clear_page.S b/arch/sparc64/lib/clear_page.S
index cdc634bceba0..77e531f6c2a7 100644
--- a/arch/sparc64/lib/clear_page.S
+++ b/arch/sparc64/lib/clear_page.S
@@ -23,9 +23,6 @@
23 * disable preemption during the clear. 23 * disable preemption during the clear.
24 */ 24 */
25 25
26#define TTE_BITS_TOP (_PAGE_VALID | _PAGE_SZBITS)
27#define TTE_BITS_BOTTOM (_PAGE_CP | _PAGE_CV | _PAGE_P | _PAGE_L | _PAGE_W)
28
29 .text 26 .text
30 27
31 .globl _clear_page 28 .globl _clear_page
@@ -44,12 +41,11 @@ clear_user_page: /* %o0=dest, %o1=vaddr */
44 sethi %hi(PAGE_SIZE), %o4 41 sethi %hi(PAGE_SIZE), %o4
45 42
46 sllx %g2, 32, %g2 43 sllx %g2, 32, %g2
47 sethi %uhi(TTE_BITS_TOP), %g3 44 sethi %hi(PAGE_KERNEL_LOCKED), %g3
48 45
49 sllx %g3, 32, %g3 46 ldx [%g3 + %lo(PAGE_KERNEL_LOCKED)], %g3
50 sub %o0, %g2, %g1 ! paddr 47 sub %o0, %g2, %g1 ! paddr
51 48
52 or %g3, TTE_BITS_BOTTOM, %g3
53 and %o1, %o4, %o0 ! vaddr D-cache alias bit 49 and %o1, %o4, %o0 ! vaddr D-cache alias bit
54 50
55 or %g1, %g3, %g1 ! TTE data 51 or %g1, %g3, %g1 ! TTE data
diff --git a/arch/sparc64/lib/copy_page.S b/arch/sparc64/lib/copy_page.S
index feebb14fd27a..37460666a5c3 100644
--- a/arch/sparc64/lib/copy_page.S
+++ b/arch/sparc64/lib/copy_page.S
@@ -23,8 +23,6 @@
23 * disable preemption during the clear. 23 * disable preemption during the clear.
24 */ 24 */
25 25
26#define TTE_BITS_TOP (_PAGE_VALID | _PAGE_SZBITS)
27#define TTE_BITS_BOTTOM (_PAGE_CP | _PAGE_CV | _PAGE_P | _PAGE_L | _PAGE_W)
28#define DCACHE_SIZE (PAGE_SIZE * 2) 26#define DCACHE_SIZE (PAGE_SIZE * 2)
29 27
30#if (PAGE_SHIFT == 13) || (PAGE_SHIFT == 19) 28#if (PAGE_SHIFT == 13) || (PAGE_SHIFT == 19)
@@ -52,13 +50,12 @@ copy_user_page: /* %o0=dest, %o1=src, %o2=vaddr */
52 sethi %hi(PAGE_SIZE), %o3 50 sethi %hi(PAGE_SIZE), %o3
53 51
54 sllx %g2, 32, %g2 52 sllx %g2, 32, %g2
55 sethi %uhi(TTE_BITS_TOP), %g3 53 sethi %hi(PAGE_KERNEL_LOCKED), %g3
56 54
57 sllx %g3, 32, %g3 55 ldx [%g3 + %lo(PAGE_KERNEL_LOCKED)], %g3
58 sub %o0, %g2, %g1 ! dest paddr 56 sub %o0, %g2, %g1 ! dest paddr
59 57
60 sub %o1, %g2, %g2 ! src paddr 58 sub %o1, %g2, %g2 ! src paddr
61 or %g3, TTE_BITS_BOTTOM, %g3
62 59
63 and %o2, %o3, %o0 ! vaddr D-cache alias bit 60 and %o2, %o3, %o0 ! vaddr D-cache alias bit
64 or %g1, %g3, %g1 ! dest TTE data 61 or %g1, %g3, %g1 ! dest TTE data
diff --git a/arch/sparc64/mm/fault.c b/arch/sparc64/mm/fault.c
index 6f0539aa44d0..439a53c1e560 100644
--- a/arch/sparc64/mm/fault.c
+++ b/arch/sparc64/mm/fault.c
@@ -137,7 +137,7 @@ static unsigned int get_user_insn(unsigned long tpc)
137 if (!pte_present(pte)) 137 if (!pte_present(pte))
138 goto out; 138 goto out;
139 139
140 pa = (pte_val(pte) & _PAGE_PADDR); 140 pa = (pte_pfn(pte) << PAGE_SHIFT);
141 pa += (tpc & ~PAGE_MASK); 141 pa += (tpc & ~PAGE_MASK);
142 142
143 /* Use phys bypass so we don't pollute dtlb/dcache. */ 143 /* Use phys bypass so we don't pollute dtlb/dcache. */
diff --git a/arch/sparc64/mm/generic.c b/arch/sparc64/mm/generic.c
index 580b63da836b..5fc5c579e35e 100644
--- a/arch/sparc64/mm/generic.c
+++ b/arch/sparc64/mm/generic.c
@@ -15,15 +15,6 @@
15#include <asm/page.h> 15#include <asm/page.h>
16#include <asm/tlbflush.h> 16#include <asm/tlbflush.h>
17 17
18static inline pte_t mk_pte_io(unsigned long page, pgprot_t prot, int space)
19{
20 pte_t pte;
21 pte_val(pte) = (((page) | pgprot_val(prot) | _PAGE_E) &
22 ~(unsigned long)_PAGE_CACHE);
23 pte_val(pte) |= (((unsigned long)space) << 32);
24 return pte;
25}
26
27/* Remap IO memory, the same way as remap_pfn_range(), but use 18/* Remap IO memory, the same way as remap_pfn_range(), but use
28 * the obio memory space. 19 * the obio memory space.
29 * 20 *
@@ -48,24 +39,29 @@ static inline void io_remap_pte_range(struct mm_struct *mm, pte_t * pte,
48 pte_t entry; 39 pte_t entry;
49 unsigned long curend = address + PAGE_SIZE; 40 unsigned long curend = address + PAGE_SIZE;
50 41
51 entry = mk_pte_io(offset, prot, space); 42 entry = mk_pte_io(offset, prot, space, PAGE_SIZE);
52 if (!(address & 0xffff)) { 43 if (!(address & 0xffff)) {
53 if (!(address & 0x3fffff) && !(offset & 0x3ffffe) && end >= address + 0x400000) { 44 if (PAGE_SIZE < (4 * 1024 * 1024) &&
54 entry = mk_pte_io(offset, 45 !(address & 0x3fffff) &&
55 __pgprot(pgprot_val (prot) | _PAGE_SZ4MB), 46 !(offset & 0x3ffffe) &&
56 space); 47 end >= address + 0x400000) {
48 entry = mk_pte_io(offset, prot, space,
49 4 * 1024 * 1024);
57 curend = address + 0x400000; 50 curend = address + 0x400000;
58 offset += 0x400000; 51 offset += 0x400000;
59 } else if (!(address & 0x7ffff) && !(offset & 0x7fffe) && end >= address + 0x80000) { 52 } else if (PAGE_SIZE < (512 * 1024) &&
60 entry = mk_pte_io(offset, 53 !(address & 0x7ffff) &&
61 __pgprot(pgprot_val (prot) | _PAGE_SZ512K), 54 !(offset & 0x7fffe) &&
62 space); 55 end >= address + 0x80000) {
56 entry = mk_pte_io(offset, prot, space,
57 512 * 1024 * 1024);
63 curend = address + 0x80000; 58 curend = address + 0x80000;
64 offset += 0x80000; 59 offset += 0x80000;
65 } else if (!(offset & 0xfffe) && end >= address + 0x10000) { 60 } else if (PAGE_SIZE < (64 * 1024) &&
66 entry = mk_pte_io(offset, 61 !(offset & 0xfffe) &&
67 __pgprot(pgprot_val (prot) | _PAGE_SZ64K), 62 end >= address + 0x10000) {
68 space); 63 entry = mk_pte_io(offset, prot, space,
64 64 * 1024);
69 curend = address + 0x10000; 65 curend = address + 0x10000;
70 offset += 0x10000; 66 offset += 0x10000;
71 } else 67 } else
diff --git a/arch/sparc64/mm/init.c b/arch/sparc64/mm/init.c
index 92756da273bd..9c2fc239f3ee 100644
--- a/arch/sparc64/mm/init.c
+++ b/arch/sparc64/mm/init.c
@@ -6,6 +6,7 @@
6 */ 6 */
7 7
8#include <linux/config.h> 8#include <linux/config.h>
9#include <linux/module.h>
9#include <linux/kernel.h> 10#include <linux/kernel.h>
10#include <linux/sched.h> 11#include <linux/sched.h>
11#include <linux/string.h> 12#include <linux/string.h>
@@ -118,6 +119,7 @@ unsigned long phys_base __read_mostly;
118unsigned long kern_base __read_mostly; 119unsigned long kern_base __read_mostly;
119unsigned long kern_size __read_mostly; 120unsigned long kern_size __read_mostly;
120unsigned long pfn_base __read_mostly; 121unsigned long pfn_base __read_mostly;
122unsigned long kern_linear_pte_xor __read_mostly;
121 123
122/* get_new_mmu_context() uses "cache + 1". */ 124/* get_new_mmu_context() uses "cache + 1". */
123DEFINE_SPINLOCK(ctx_alloc_lock); 125DEFINE_SPINLOCK(ctx_alloc_lock);
@@ -256,6 +258,9 @@ static inline void tsb_insert(struct tsb *ent, unsigned long tag, unsigned long
256 __tsb_insert(tsb_addr, tag, pte); 258 __tsb_insert(tsb_addr, tag, pte);
257} 259}
258 260
261unsigned long _PAGE_ALL_SZ_BITS __read_mostly;
262unsigned long _PAGE_SZBITS __read_mostly;
263
259void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t pte) 264void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t pte)
260{ 265{
261 struct mm_struct *mm; 266 struct mm_struct *mm;
@@ -398,39 +403,9 @@ struct linux_prom_translation {
398struct linux_prom_translation prom_trans[512] __read_mostly; 403struct linux_prom_translation prom_trans[512] __read_mostly;
399unsigned int prom_trans_ents __read_mostly; 404unsigned int prom_trans_ents __read_mostly;
400 405
401extern unsigned long prom_boot_page;
402extern void prom_remap(unsigned long physpage, unsigned long virtpage, int mmu_ihandle);
403extern int prom_get_mmu_ihandle(void);
404extern void register_prom_callbacks(void);
405
406/* Exported for SMP bootup purposes. */ 406/* Exported for SMP bootup purposes. */
407unsigned long kern_locked_tte_data; 407unsigned long kern_locked_tte_data;
408 408
409/*
410 * Translate PROM's mapping we capture at boot time into physical address.
411 * The second parameter is only set from prom_callback() invocations.
412 */
413unsigned long prom_virt_to_phys(unsigned long promva, int *error)
414{
415 int i;
416
417 for (i = 0; i < prom_trans_ents; i++) {
418 struct linux_prom_translation *p = &prom_trans[i];
419
420 if (promva >= p->virt &&
421 promva < (p->virt + p->size)) {
422 unsigned long base = p->data & _PAGE_PADDR;
423
424 if (error)
425 *error = 0;
426 return base + (promva & (8192 - 1));
427 }
428 }
429 if (error)
430 *error = 1;
431 return 0UL;
432}
433
434/* The obp translations are saved based on 8k pagesize, since obp can 409/* The obp translations are saved based on 8k pagesize, since obp can
435 * use a mixture of pagesizes. Misses to the LOW_OBP_ADDRESS -> 410 * use a mixture of pagesizes. Misses to the LOW_OBP_ADDRESS ->
436 * HI_OBP_ADDRESS range are handled in ktlb.S. 411 * HI_OBP_ADDRESS range are handled in ktlb.S.
@@ -537,6 +512,8 @@ static void __init hypervisor_tlb_lock(unsigned long vaddr,
537 "3" (arg2), "4" (arg3)); 512 "3" (arg2), "4" (arg3));
538} 513}
539 514
515static unsigned long kern_large_tte(unsigned long paddr);
516
540static void __init remap_kernel(void) 517static void __init remap_kernel(void)
541{ 518{
542 unsigned long phys_page, tte_vaddr, tte_data; 519 unsigned long phys_page, tte_vaddr, tte_data;
@@ -544,9 +521,7 @@ static void __init remap_kernel(void)
544 521
545 tte_vaddr = (unsigned long) KERNBASE; 522 tte_vaddr = (unsigned long) KERNBASE;
546 phys_page = (prom_boot_mapping_phys_low >> 22UL) << 22UL; 523 phys_page = (prom_boot_mapping_phys_low >> 22UL) << 22UL;
547 tte_data = (phys_page | (_PAGE_VALID | _PAGE_SZ4MB | 524 tte_data = kern_large_tte(phys_page);
548 _PAGE_CP | _PAGE_CV | _PAGE_P |
549 _PAGE_L | _PAGE_W));
550 525
551 kern_locked_tte_data = tte_data; 526 kern_locked_tte_data = tte_data;
552 527
@@ -591,10 +566,6 @@ static void __init inherit_prom_mappings(void)
591 prom_printf("Remapping the kernel... "); 566 prom_printf("Remapping the kernel... ");
592 remap_kernel(); 567 remap_kernel();
593 prom_printf("done.\n"); 568 prom_printf("done.\n");
594
595 prom_printf("Registering callbacks... ");
596 register_prom_callbacks();
597 prom_printf("done.\n");
598} 569}
599 570
600void prom_world(int enter) 571void prom_world(int enter)
@@ -631,63 +602,6 @@ void __flush_dcache_range(unsigned long start, unsigned long end)
631} 602}
632#endif /* DCACHE_ALIASING_POSSIBLE */ 603#endif /* DCACHE_ALIASING_POSSIBLE */
633 604
634/* If not locked, zap it. */
635void __flush_tlb_all(void)
636{
637 unsigned long pstate;
638 int i;
639
640 __asm__ __volatile__("flushw\n\t"
641 "rdpr %%pstate, %0\n\t"
642 "wrpr %0, %1, %%pstate"
643 : "=r" (pstate)
644 : "i" (PSTATE_IE));
645 if (tlb_type == spitfire) {
646 for (i = 0; i < 64; i++) {
647 /* Spitfire Errata #32 workaround */
648 /* NOTE: Always runs on spitfire, so no
649 * cheetah+ page size encodings.
650 */
651 __asm__ __volatile__("stxa %0, [%1] %2\n\t"
652 "flush %%g6"
653 : /* No outputs */
654 : "r" (0),
655 "r" (PRIMARY_CONTEXT), "i" (ASI_DMMU));
656
657 if (!(spitfire_get_dtlb_data(i) & _PAGE_L)) {
658 __asm__ __volatile__("stxa %%g0, [%0] %1\n\t"
659 "membar #Sync"
660 : /* no outputs */
661 : "r" (TLB_TAG_ACCESS), "i" (ASI_DMMU));
662 spitfire_put_dtlb_data(i, 0x0UL);
663 }
664
665 /* Spitfire Errata #32 workaround */
666 /* NOTE: Always runs on spitfire, so no
667 * cheetah+ page size encodings.
668 */
669 __asm__ __volatile__("stxa %0, [%1] %2\n\t"
670 "flush %%g6"
671 : /* No outputs */
672 : "r" (0),
673 "r" (PRIMARY_CONTEXT), "i" (ASI_DMMU));
674
675 if (!(spitfire_get_itlb_data(i) & _PAGE_L)) {
676 __asm__ __volatile__("stxa %%g0, [%0] %1\n\t"
677 "membar #Sync"
678 : /* no outputs */
679 : "r" (TLB_TAG_ACCESS), "i" (ASI_IMMU));
680 spitfire_put_itlb_data(i, 0x0UL);
681 }
682 }
683 } else if (tlb_type == cheetah || tlb_type == cheetah_plus) {
684 cheetah_flush_dtlb_all();
685 cheetah_flush_itlb_all();
686 }
687 __asm__ __volatile__("wrpr %0, 0, %%pstate"
688 : : "r" (pstate));
689}
690
691/* Caller does TLB context flushing on local CPU if necessary. 605/* Caller does TLB context flushing on local CPU if necessary.
692 * The caller also ensures that CTX_VALID(mm->context) is false. 606 * The caller also ensures that CTX_VALID(mm->context) is false.
693 * 607 *
@@ -1180,6 +1094,9 @@ extern void sun4v_patch_tlb_handlers(void);
1180static unsigned long last_valid_pfn; 1094static unsigned long last_valid_pfn;
1181pgd_t swapper_pg_dir[2048]; 1095pgd_t swapper_pg_dir[2048];
1182 1096
1097static void sun4u_pgprot_init(void);
1098static void sun4v_pgprot_init(void);
1099
1183void __init paging_init(void) 1100void __init paging_init(void)
1184{ 1101{
1185 unsigned long end_pfn, pages_avail, shift; 1102 unsigned long end_pfn, pages_avail, shift;
@@ -1188,6 +1105,11 @@ void __init paging_init(void)
1188 kern_base = (prom_boot_mapping_phys_low >> 22UL) << 22UL; 1105 kern_base = (prom_boot_mapping_phys_low >> 22UL) << 22UL;
1189 kern_size = (unsigned long)&_end - (unsigned long)KERNBASE; 1106 kern_size = (unsigned long)&_end - (unsigned long)KERNBASE;
1190 1107
1108 if (tlb_type == hypervisor)
1109 sun4v_pgprot_init();
1110 else
1111 sun4u_pgprot_init();
1112
1191 if (tlb_type == cheetah_plus || 1113 if (tlb_type == cheetah_plus ||
1192 tlb_type == hypervisor) 1114 tlb_type == hypervisor)
1193 tsb_phys_patch(); 1115 tsb_phys_patch();
@@ -1411,3 +1333,596 @@ void free_initrd_mem(unsigned long start, unsigned long end)
1411 } 1333 }
1412} 1334}
1413#endif 1335#endif
1336
1337/* SUN4U pte bits... */
1338#define _PAGE_SZ4MB_4U 0x6000000000000000 /* 4MB Page */
1339#define _PAGE_SZ512K_4U 0x4000000000000000 /* 512K Page */
1340#define _PAGE_SZ64K_4U 0x2000000000000000 /* 64K Page */
1341#define _PAGE_SZ8K_4U 0x0000000000000000 /* 8K Page */
1342#define _PAGE_NFO_4U 0x1000000000000000 /* No Fault Only */
1343#define _PAGE_IE_4U 0x0800000000000000 /* Invert Endianness */
1344#define _PAGE_SOFT2_4U 0x07FC000000000000 /* Software bits, set 2 */
1345#define _PAGE_RES1_4U 0x0002000000000000 /* Reserved */
1346#define _PAGE_SZ32MB_4U 0x0001000000000000 /* (Panther) 32MB page */
1347#define _PAGE_SZ256MB_4U 0x2001000000000000 /* (Panther) 256MB page */
1348#define _PAGE_SN_4U 0x0000800000000000 /* (Cheetah) Snoop */
1349#define _PAGE_RES2_4U 0x0000780000000000 /* Reserved */
1350#define _PAGE_PADDR_4U 0x000007FFFFFFE000 /* (Cheetah) paddr[42:13] */
1351#define _PAGE_SOFT_4U 0x0000000000001F80 /* Software bits: */
1352#define _PAGE_EXEC_4U 0x0000000000001000 /* Executable SW bit */
1353#define _PAGE_MODIFIED_4U 0x0000000000000800 /* Modified (dirty) */
1354#define _PAGE_FILE_4U 0x0000000000000800 /* Pagecache page */
1355#define _PAGE_ACCESSED_4U 0x0000000000000400 /* Accessed (ref'd) */
1356#define _PAGE_READ_4U 0x0000000000000200 /* Readable SW Bit */
1357#define _PAGE_WRITE_4U 0x0000000000000100 /* Writable SW Bit */
1358#define _PAGE_PRESENT_4U 0x0000000000000080 /* Present */
1359#define _PAGE_L_4U 0x0000000000000040 /* Locked TTE */
1360#define _PAGE_CP_4U 0x0000000000000020 /* Cacheable in P-Cache */
1361#define _PAGE_CV_4U 0x0000000000000010 /* Cacheable in V-Cache */
1362#define _PAGE_E_4U 0x0000000000000008 /* side-Effect */
1363#define _PAGE_P_4U 0x0000000000000004 /* Privileged Page */
1364#define _PAGE_W_4U 0x0000000000000002 /* Writable */
1365
1366/* SUN4V pte bits... */
1367#define _PAGE_NFO_4V 0x4000000000000000 /* No Fault Only */
1368#define _PAGE_SOFT2_4V 0x3F00000000000000 /* Software bits, set 2 */
1369#define _PAGE_MODIFIED_4V 0x2000000000000000 /* Modified (dirty) */
1370#define _PAGE_ACCESSED_4V 0x1000000000000000 /* Accessed (ref'd) */
1371#define _PAGE_READ_4V 0x0800000000000000 /* Readable SW Bit */
1372#define _PAGE_WRITE_4V 0x0400000000000000 /* Writable SW Bit */
1373#define _PAGE_PADDR_4V 0x00FFFFFFFFFFE000 /* paddr[55:13] */
1374#define _PAGE_IE_4V 0x0000000000001000 /* Invert Endianness */
1375#define _PAGE_E_4V 0x0000000000000800 /* side-Effect */
1376#define _PAGE_CP_4V 0x0000000000000400 /* Cacheable in P-Cache */
1377#define _PAGE_CV_4V 0x0000000000000200 /* Cacheable in V-Cache */
1378#define _PAGE_P_4V 0x0000000000000100 /* Privileged Page */
1379#define _PAGE_EXEC_4V 0x0000000000000080 /* Executable Page */
1380#define _PAGE_W_4V 0x0000000000000040 /* Writable */
1381#define _PAGE_SOFT_4V 0x0000000000000030 /* Software bits */
1382#define _PAGE_FILE_4V 0x0000000000000020 /* Pagecache page */
1383#define _PAGE_PRESENT_4V 0x0000000000000010 /* Present */
1384#define _PAGE_RESV_4V 0x0000000000000008 /* Reserved */
1385#define _PAGE_SZ16GB_4V 0x0000000000000007 /* 16GB Page */
1386#define _PAGE_SZ2GB_4V 0x0000000000000006 /* 2GB Page */
1387#define _PAGE_SZ256MB_4V 0x0000000000000005 /* 256MB Page */
1388#define _PAGE_SZ32MB_4V 0x0000000000000004 /* 32MB Page */
1389#define _PAGE_SZ4MB_4V 0x0000000000000003 /* 4MB Page */
1390#define _PAGE_SZ512K_4V 0x0000000000000002 /* 512K Page */
1391#define _PAGE_SZ64K_4V 0x0000000000000001 /* 64K Page */
1392#define _PAGE_SZ8K_4V 0x0000000000000000 /* 8K Page */
1393
1394#if PAGE_SHIFT == 13
1395#define _PAGE_SZBITS_4U _PAGE_SZ8K_4U
1396#define _PAGE_SZBITS_4V _PAGE_SZ8K_4V
1397#elif PAGE_SHIFT == 16
1398#define _PAGE_SZBITS_4U _PAGE_SZ64K_4U
1399#define _PAGE_SZBITS_4V _PAGE_SZ64K_4V
1400#elif PAGE_SHIFT == 19
1401#define _PAGE_SZBITS_4U _PAGE_SZ512K_4U
1402#define _PAGE_SZBITS_4V _PAGE_SZ512K_4V
1403#elif PAGE_SHIFT == 22
1404#define _PAGE_SZBITS_4U _PAGE_SZ4MB_4U
1405#define _PAGE_SZBITS_4V _PAGE_SZ4MB_4V
1406#else
1407#error Wrong PAGE_SHIFT specified
1408#endif
1409
1410#if defined(CONFIG_HUGETLB_PAGE_SIZE_4MB)
1411#define _PAGE_SZHUGE_4U _PAGE_SZ4MB_4U
1412#define _PAGE_SZHUGE_4V _PAGE_SZ4MB_4V
1413#elif defined(CONFIG_HUGETLB_PAGE_SIZE_512K)
1414#define _PAGE_SZHUGE_4U _PAGE_SZ512K_4U
1415#define _PAGE_SZHUGE_4V _PAGE_SZ512K_4V
1416#elif defined(CONFIG_HUGETLB_PAGE_SIZE_64K)
1417#define _PAGE_SZHUGE_4U _PAGE_SZ64K_4U
1418#define _PAGE_SZHUGE_4V _PAGE_SZ64K_4V
1419#endif
1420
1421#define _PAGE_CACHE_4U (_PAGE_CP_4U | _PAGE_CV_4U)
1422#define _PAGE_CACHE_4V (_PAGE_CP_4V | _PAGE_CV_4V)
1423#define __DIRTY_BITS_4U (_PAGE_MODIFIED_4U | _PAGE_WRITE_4U | _PAGE_W_4U)
1424#define __DIRTY_BITS_4V (_PAGE_MODIFIED_4V | _PAGE_WRITE_4V | _PAGE_W_4V)
1425#define __ACCESS_BITS_4U (_PAGE_ACCESSED_4U | _PAGE_READ_4U | _PAGE_R)
1426#define __ACCESS_BITS_4V (_PAGE_ACCESSED_4V | _PAGE_READ_4V | _PAGE_R)
1427
1428pgprot_t PAGE_KERNEL __read_mostly;
1429EXPORT_SYMBOL(PAGE_KERNEL);
1430
1431pgprot_t PAGE_KERNEL_LOCKED __read_mostly;
1432pgprot_t PAGE_COPY __read_mostly;
1433pgprot_t PAGE_EXEC __read_mostly;
1434unsigned long pg_iobits __read_mostly;
1435
1436unsigned long _PAGE_IE __read_mostly;
1437unsigned long _PAGE_E __read_mostly;
1438unsigned long _PAGE_CACHE __read_mostly;
1439
1440static void prot_init_common(unsigned long page_none,
1441 unsigned long page_shared,
1442 unsigned long page_copy,
1443 unsigned long page_readonly,
1444 unsigned long page_exec_bit)
1445{
1446 PAGE_COPY = __pgprot(page_copy);
1447
1448 protection_map[0x0] = __pgprot(page_none);
1449 protection_map[0x1] = __pgprot(page_readonly & ~page_exec_bit);
1450 protection_map[0x2] = __pgprot(page_copy & ~page_exec_bit);
1451 protection_map[0x3] = __pgprot(page_copy & ~page_exec_bit);
1452 protection_map[0x4] = __pgprot(page_readonly);
1453 protection_map[0x5] = __pgprot(page_readonly);
1454 protection_map[0x6] = __pgprot(page_copy);
1455 protection_map[0x7] = __pgprot(page_copy);
1456 protection_map[0x8] = __pgprot(page_none);
1457 protection_map[0x9] = __pgprot(page_readonly & ~page_exec_bit);
1458 protection_map[0xa] = __pgprot(page_shared & ~page_exec_bit);
1459 protection_map[0xb] = __pgprot(page_shared & ~page_exec_bit);
1460 protection_map[0xc] = __pgprot(page_readonly);
1461 protection_map[0xd] = __pgprot(page_readonly);
1462 protection_map[0xe] = __pgprot(page_shared);
1463 protection_map[0xf] = __pgprot(page_shared);
1464}
1465
1466static void __init sun4u_pgprot_init(void)
1467{
1468 unsigned long page_none, page_shared, page_copy, page_readonly;
1469 unsigned long page_exec_bit;
1470
1471 PAGE_KERNEL = __pgprot (_PAGE_PRESENT_4U | _PAGE_VALID |
1472 _PAGE_CACHE_4U | _PAGE_P_4U |
1473 __ACCESS_BITS_4U | __DIRTY_BITS_4U |
1474 _PAGE_EXEC_4U);
1475 PAGE_KERNEL_LOCKED = __pgprot (_PAGE_PRESENT_4U | _PAGE_VALID |
1476 _PAGE_CACHE_4U | _PAGE_P_4U |
1477 __ACCESS_BITS_4U | __DIRTY_BITS_4U |
1478 _PAGE_EXEC_4U | _PAGE_L_4U);
1479 PAGE_EXEC = __pgprot(_PAGE_EXEC_4U);
1480
1481 _PAGE_IE = _PAGE_IE_4U;
1482 _PAGE_E = _PAGE_E_4U;
1483 _PAGE_CACHE = _PAGE_CACHE_4U;
1484
1485 pg_iobits = (_PAGE_VALID | _PAGE_PRESENT_4U | __DIRTY_BITS_4U |
1486 __ACCESS_BITS_4U | _PAGE_E_4U);
1487
1488 kern_linear_pte_xor = (_PAGE_VALID | _PAGE_SZ4MB_4U) ^
1489 0xfffff80000000000;
1490 kern_linear_pte_xor |= (_PAGE_CP_4U | _PAGE_CV_4U |
1491 _PAGE_P_4U | _PAGE_W_4U);
1492
1493 _PAGE_SZBITS = _PAGE_SZBITS_4U;
1494 _PAGE_ALL_SZ_BITS = (_PAGE_SZ4MB_4U | _PAGE_SZ512K_4U |
1495 _PAGE_SZ64K_4U | _PAGE_SZ8K_4U |
1496 _PAGE_SZ32MB_4U | _PAGE_SZ256MB_4U);
1497
1498
1499 page_none = _PAGE_PRESENT_4U | _PAGE_ACCESSED_4U | _PAGE_CACHE_4U;
1500 page_shared = (_PAGE_VALID | _PAGE_PRESENT_4U | _PAGE_CACHE_4U |
1501 __ACCESS_BITS_4U | _PAGE_WRITE_4U | _PAGE_EXEC_4U);
1502 page_copy = (_PAGE_VALID | _PAGE_PRESENT_4U | _PAGE_CACHE_4U |
1503 __ACCESS_BITS_4U | _PAGE_EXEC_4U);
1504 page_readonly = (_PAGE_VALID | _PAGE_PRESENT_4U | _PAGE_CACHE_4U |
1505 __ACCESS_BITS_4U | _PAGE_EXEC_4U);
1506
1507 page_exec_bit = _PAGE_EXEC_4U;
1508
1509 prot_init_common(page_none, page_shared, page_copy, page_readonly,
1510 page_exec_bit);
1511}
1512
1513static void __init sun4v_pgprot_init(void)
1514{
1515 unsigned long page_none, page_shared, page_copy, page_readonly;
1516 unsigned long page_exec_bit;
1517
1518 PAGE_KERNEL = __pgprot (_PAGE_PRESENT_4V | _PAGE_VALID |
1519 _PAGE_CACHE_4V | _PAGE_P_4V |
1520 __ACCESS_BITS_4V | __DIRTY_BITS_4V |
1521 _PAGE_EXEC_4V);
1522 PAGE_KERNEL_LOCKED = PAGE_KERNEL;
1523 PAGE_EXEC = __pgprot(_PAGE_EXEC_4V);
1524
1525 _PAGE_IE = _PAGE_IE_4V;
1526 _PAGE_E = _PAGE_E_4V;
1527 _PAGE_CACHE = _PAGE_CACHE_4V;
1528
1529 kern_linear_pte_xor = (_PAGE_VALID | _PAGE_SZ4MB_4V) ^
1530 0xfffff80000000000;
1531 kern_linear_pte_xor |= (_PAGE_CP_4V | _PAGE_CV_4V |
1532 _PAGE_P_4V | _PAGE_W_4V);
1533
1534 pg_iobits = (_PAGE_VALID | _PAGE_PRESENT_4V | __DIRTY_BITS_4V |
1535 __ACCESS_BITS_4V | _PAGE_E_4V);
1536
1537 _PAGE_SZBITS = _PAGE_SZBITS_4V;
1538 _PAGE_ALL_SZ_BITS = (_PAGE_SZ16GB_4V | _PAGE_SZ2GB_4V |
1539 _PAGE_SZ256MB_4V | _PAGE_SZ32MB_4V |
1540 _PAGE_SZ4MB_4V | _PAGE_SZ512K_4V |
1541 _PAGE_SZ64K_4V | _PAGE_SZ8K_4V);
1542
1543 page_none = _PAGE_PRESENT_4V | _PAGE_ACCESSED_4V | _PAGE_CACHE_4V;
1544 page_shared = (_PAGE_VALID | _PAGE_PRESENT_4V | _PAGE_CACHE_4V |
1545 __ACCESS_BITS_4V | _PAGE_WRITE_4V | _PAGE_EXEC_4V);
1546 page_copy = (_PAGE_VALID | _PAGE_PRESENT_4V | _PAGE_CACHE_4V |
1547 __ACCESS_BITS_4V | _PAGE_EXEC_4V);
1548 page_readonly = (_PAGE_VALID | _PAGE_PRESENT_4V | _PAGE_CACHE_4V |
1549 __ACCESS_BITS_4V | _PAGE_EXEC_4V);
1550
1551 page_exec_bit = _PAGE_EXEC_4V;
1552
1553 prot_init_common(page_none, page_shared, page_copy, page_readonly,
1554 page_exec_bit);
1555}
1556
1557unsigned long pte_sz_bits(unsigned long sz)
1558{
1559 if (tlb_type == hypervisor) {
1560 switch (sz) {
1561 case 8 * 1024:
1562 default:
1563 return _PAGE_SZ8K_4V;
1564 case 64 * 1024:
1565 return _PAGE_SZ64K_4V;
1566 case 512 * 1024:
1567 return _PAGE_SZ512K_4V;
1568 case 4 * 1024 * 1024:
1569 return _PAGE_SZ4MB_4V;
1570 };
1571 } else {
1572 switch (sz) {
1573 case 8 * 1024:
1574 default:
1575 return _PAGE_SZ8K_4U;
1576 case 64 * 1024:
1577 return _PAGE_SZ64K_4U;
1578 case 512 * 1024:
1579 return _PAGE_SZ512K_4U;
1580 case 4 * 1024 * 1024:
1581 return _PAGE_SZ4MB_4U;
1582 };
1583 }
1584}
1585
1586pte_t mk_pte_io(unsigned long page, pgprot_t prot, int space, unsigned long page_size)
1587{
1588 pte_t pte;
1589 if (tlb_type == hypervisor) {
1590 pte_val(pte) = (((page) | pgprot_val(prot) | _PAGE_E_4V) &
1591 ~(unsigned long)_PAGE_CACHE_4V);
1592 } else {
1593 pte_val(pte) = (((page) | pgprot_val(prot) | _PAGE_E_4U) &
1594 ~(unsigned long)_PAGE_CACHE_4U);
1595 }
1596 pte_val(pte) |= (((unsigned long)space) << 32);
1597 pte_val(pte) |= pte_sz_bits(page_size);
1598 return pte;
1599}
1600
1601unsigned long pte_present(pte_t pte)
1602{
1603 return (pte_val(pte) &
1604 ((tlb_type == hypervisor) ?
1605 _PAGE_PRESENT_4V : _PAGE_PRESENT_4U));
1606}
1607
1608unsigned long pte_file(pte_t pte)
1609{
1610 return (pte_val(pte) &
1611 ((tlb_type == hypervisor) ?
1612 _PAGE_FILE_4V : _PAGE_FILE_4U));
1613}
1614
1615unsigned long pte_read(pte_t pte)
1616{
1617 return (pte_val(pte) &
1618 ((tlb_type == hypervisor) ?
1619 _PAGE_READ_4V : _PAGE_READ_4U));
1620}
1621
1622unsigned long pte_exec(pte_t pte)
1623{
1624 return (pte_val(pte) &
1625 ((tlb_type == hypervisor) ?
1626 _PAGE_EXEC_4V : _PAGE_EXEC_4U));
1627}
1628
1629unsigned long pte_write(pte_t pte)
1630{
1631 return (pte_val(pte) &
1632 ((tlb_type == hypervisor) ?
1633 _PAGE_WRITE_4V : _PAGE_WRITE_4U));
1634}
1635
1636unsigned long pte_dirty(pte_t pte)
1637{
1638 return (pte_val(pte) &
1639 ((tlb_type == hypervisor) ?
1640 _PAGE_MODIFIED_4V : _PAGE_MODIFIED_4U));
1641}
1642
1643unsigned long pte_young(pte_t pte)
1644{
1645 return (pte_val(pte) &
1646 ((tlb_type == hypervisor) ?
1647 _PAGE_ACCESSED_4V : _PAGE_ACCESSED_4U));
1648}
1649
1650pte_t pte_wrprotect(pte_t pte)
1651{
1652 unsigned long mask = _PAGE_WRITE_4U | _PAGE_W_4U;
1653
1654 if (tlb_type == hypervisor)
1655 mask = _PAGE_WRITE_4V | _PAGE_W_4V;
1656
1657 return __pte(pte_val(pte) & ~mask);
1658}
1659
1660pte_t pte_rdprotect(pte_t pte)
1661{
1662 unsigned long mask = _PAGE_R | _PAGE_READ_4U;
1663
1664 if (tlb_type == hypervisor)
1665 mask = _PAGE_R | _PAGE_READ_4V;
1666
1667 return __pte(pte_val(pte) & ~mask);
1668}
1669
1670pte_t pte_mkclean(pte_t pte)
1671{
1672 unsigned long mask = _PAGE_MODIFIED_4U | _PAGE_W_4U;
1673
1674 if (tlb_type == hypervisor)
1675 mask = _PAGE_MODIFIED_4V | _PAGE_W_4V;
1676
1677 return __pte(pte_val(pte) & ~mask);
1678}
1679
1680pte_t pte_mkold(pte_t pte)
1681{
1682 unsigned long mask = _PAGE_R | _PAGE_ACCESSED_4U;
1683
1684 if (tlb_type == hypervisor)
1685 mask = _PAGE_R | _PAGE_ACCESSED_4V;
1686
1687 return __pte(pte_val(pte) & ~mask);
1688}
1689
1690pte_t pte_mkyoung(pte_t pte)
1691{
1692 unsigned long mask = _PAGE_R | _PAGE_ACCESSED_4U;
1693
1694 if (tlb_type == hypervisor)
1695 mask = _PAGE_R | _PAGE_ACCESSED_4V;
1696
1697 return __pte(pte_val(pte) | mask);
1698}
1699
1700pte_t pte_mkwrite(pte_t pte)
1701{
1702 unsigned long mask = _PAGE_WRITE_4U;
1703
1704 if (tlb_type == hypervisor)
1705 mask = _PAGE_WRITE_4V;
1706
1707 return __pte(pte_val(pte) | mask);
1708}
1709
1710pte_t pte_mkdirty(pte_t pte)
1711{
1712 unsigned long mask = _PAGE_MODIFIED_4U | _PAGE_W_4U;
1713
1714 if (tlb_type == hypervisor)
1715 mask = _PAGE_MODIFIED_4V | _PAGE_W_4V;
1716
1717 return __pte(pte_val(pte) | mask);
1718}
1719
1720pte_t pte_mkhuge(pte_t pte)
1721{
1722 unsigned long mask = _PAGE_SZHUGE_4U;
1723
1724 if (tlb_type == hypervisor)
1725 mask = _PAGE_SZHUGE_4V;
1726
1727 return __pte(pte_val(pte) | mask);
1728}
1729
1730pte_t pgoff_to_pte(unsigned long off)
1731{
1732 unsigned long bit = _PAGE_FILE_4U;
1733
1734 if (tlb_type == hypervisor)
1735 bit = _PAGE_FILE_4V;
1736
1737 return __pte((off << PAGE_SHIFT) | bit);
1738}
1739
1740pgprot_t pgprot_noncached(pgprot_t prot)
1741{
1742 unsigned long val = pgprot_val(prot);
1743 unsigned long off = _PAGE_CP_4U | _PAGE_CV_4U;
1744 unsigned long on = _PAGE_E_4U;
1745
1746 if (tlb_type == hypervisor) {
1747 off = _PAGE_CP_4V | _PAGE_CV_4V;
1748 on = _PAGE_E_4V;
1749 }
1750
1751 return __pgprot((val & ~off) | on);
1752}
1753
1754pte_t pfn_pte(unsigned long pfn, pgprot_t prot)
1755{
1756 unsigned long sz_bits = _PAGE_SZBITS_4U;
1757
1758 if (tlb_type == hypervisor)
1759 sz_bits = _PAGE_SZBITS_4V;
1760
1761 return __pte((pfn << PAGE_SHIFT) | pgprot_val(prot) | sz_bits);
1762}
1763
1764unsigned long pte_pfn(pte_t pte)
1765{
1766 unsigned long mask = _PAGE_PADDR_4U;
1767
1768 if (tlb_type == hypervisor)
1769 mask = _PAGE_PADDR_4V;
1770
1771 return (pte_val(pte) & mask) >> PAGE_SHIFT;
1772}
1773
1774pte_t pte_modify(pte_t orig_pte, pgprot_t new_prot)
1775{
1776 unsigned long preserve_mask;
1777 unsigned long val;
1778
1779 preserve_mask = (_PAGE_PADDR_4U |
1780 _PAGE_MODIFIED_4U |
1781 _PAGE_ACCESSED_4U |
1782 _PAGE_CP_4U |
1783 _PAGE_CV_4U |
1784 _PAGE_E_4U |
1785 _PAGE_PRESENT_4U |
1786 _PAGE_SZBITS_4U);
1787 if (tlb_type == hypervisor)
1788 preserve_mask = (_PAGE_PADDR_4V |
1789 _PAGE_MODIFIED_4V |
1790 _PAGE_ACCESSED_4V |
1791 _PAGE_CP_4V |
1792 _PAGE_CV_4V |
1793 _PAGE_E_4V |
1794 _PAGE_PRESENT_4V |
1795 _PAGE_SZBITS_4V);
1796
1797 val = (pte_val(orig_pte) & preserve_mask);
1798
1799 return __pte(val | (pgprot_val(new_prot) & ~preserve_mask));
1800}
1801
1802static unsigned long kern_large_tte(unsigned long paddr)
1803{
1804 unsigned long val;
1805
1806 val = (_PAGE_VALID | _PAGE_SZ4MB_4U |
1807 _PAGE_CP_4U | _PAGE_CV_4U | _PAGE_P_4U |
1808 _PAGE_EXEC_4U | _PAGE_L_4U | _PAGE_W_4U);
1809 if (tlb_type == hypervisor)
1810 val = (_PAGE_VALID | _PAGE_SZ4MB_4V |
1811 _PAGE_CP_4V | _PAGE_CV_4V | _PAGE_P_4V |
1812 _PAGE_EXEC_4V | _PAGE_W_4V);
1813
1814 return val | paddr;
1815}
1816
1817/*
1818 * Translate PROM's mapping we capture at boot time into physical address.
1819 * The second parameter is only set from prom_callback() invocations.
1820 */
1821unsigned long prom_virt_to_phys(unsigned long promva, int *error)
1822{
1823 unsigned long mask;
1824 int i;
1825
1826 mask = _PAGE_PADDR_4U;
1827 if (tlb_type == hypervisor)
1828 mask = _PAGE_PADDR_4V;
1829
1830 for (i = 0; i < prom_trans_ents; i++) {
1831 struct linux_prom_translation *p = &prom_trans[i];
1832
1833 if (promva >= p->virt &&
1834 promva < (p->virt + p->size)) {
1835 unsigned long base = p->data & mask;
1836
1837 if (error)
1838 *error = 0;
1839 return base + (promva & (8192 - 1));
1840 }
1841 }
1842 if (error)
1843 *error = 1;
1844 return 0UL;
1845}
1846
1847/* XXX We should kill off this ugly thing at so me point. XXX */
1848unsigned long sun4u_get_pte(unsigned long addr)
1849{
1850 pgd_t *pgdp;
1851 pud_t *pudp;
1852 pmd_t *pmdp;
1853 pte_t *ptep;
1854 unsigned long mask = _PAGE_PADDR_4U;
1855
1856 if (tlb_type == hypervisor)
1857 mask = _PAGE_PADDR_4V;
1858
1859 if (addr >= PAGE_OFFSET)
1860 return addr & mask;
1861
1862 if ((addr >= LOW_OBP_ADDRESS) && (addr < HI_OBP_ADDRESS))
1863 return prom_virt_to_phys(addr, NULL);
1864
1865 pgdp = pgd_offset_k(addr);
1866 pudp = pud_offset(pgdp, addr);
1867 pmdp = pmd_offset(pudp, addr);
1868 ptep = pte_offset_kernel(pmdp, addr);
1869
1870 return pte_val(*ptep) & mask;
1871}
1872
1873/* If not locked, zap it. */
1874void __flush_tlb_all(void)
1875{
1876 unsigned long pstate;
1877 int i;
1878
1879 __asm__ __volatile__("flushw\n\t"
1880 "rdpr %%pstate, %0\n\t"
1881 "wrpr %0, %1, %%pstate"
1882 : "=r" (pstate)
1883 : "i" (PSTATE_IE));
1884 if (tlb_type == spitfire) {
1885 for (i = 0; i < 64; i++) {
1886 /* Spitfire Errata #32 workaround */
1887 /* NOTE: Always runs on spitfire, so no
1888 * cheetah+ page size encodings.
1889 */
1890 __asm__ __volatile__("stxa %0, [%1] %2\n\t"
1891 "flush %%g6"
1892 : /* No outputs */
1893 : "r" (0),
1894 "r" (PRIMARY_CONTEXT), "i" (ASI_DMMU));
1895
1896 if (!(spitfire_get_dtlb_data(i) & _PAGE_L_4U)) {
1897 __asm__ __volatile__("stxa %%g0, [%0] %1\n\t"
1898 "membar #Sync"
1899 : /* no outputs */
1900 : "r" (TLB_TAG_ACCESS), "i" (ASI_DMMU));
1901 spitfire_put_dtlb_data(i, 0x0UL);
1902 }
1903
1904 /* Spitfire Errata #32 workaround */
1905 /* NOTE: Always runs on spitfire, so no
1906 * cheetah+ page size encodings.
1907 */
1908 __asm__ __volatile__("stxa %0, [%1] %2\n\t"
1909 "flush %%g6"
1910 : /* No outputs */
1911 : "r" (0),
1912 "r" (PRIMARY_CONTEXT), "i" (ASI_DMMU));
1913
1914 if (!(spitfire_get_itlb_data(i) & _PAGE_L_4U)) {
1915 __asm__ __volatile__("stxa %%g0, [%0] %1\n\t"
1916 "membar #Sync"
1917 : /* no outputs */
1918 : "r" (TLB_TAG_ACCESS), "i" (ASI_IMMU));
1919 spitfire_put_itlb_data(i, 0x0UL);
1920 }
1921 }
1922 } else if (tlb_type == cheetah || tlb_type == cheetah_plus) {
1923 cheetah_flush_dtlb_all();
1924 cheetah_flush_itlb_all();
1925 }
1926 __asm__ __volatile__("wrpr %0, 0, %%pstate"
1927 : : "r" (pstate));
1928}
diff --git a/arch/sparc64/mm/tsb.c b/arch/sparc64/mm/tsb.c
index c5dc4b0cc1c5..975242ab88ee 100644
--- a/arch/sparc64/mm/tsb.c
+++ b/arch/sparc64/mm/tsb.c
@@ -85,8 +85,7 @@ static void setup_tsb_params(struct mm_struct *mm, unsigned long tsb_bytes)
85 mm->context.tsb_nentries = tsb_bytes / sizeof(struct tsb); 85 mm->context.tsb_nentries = tsb_bytes / sizeof(struct tsb);
86 86
87 base = TSBMAP_BASE; 87 base = TSBMAP_BASE;
88 tte = (_PAGE_VALID | _PAGE_L | _PAGE_CP | 88 tte = pgprot_val(PAGE_KERNEL_LOCKED);
89 _PAGE_CV | _PAGE_P | _PAGE_W);
90 tsb_paddr = __pa(mm->context.tsb); 89 tsb_paddr = __pa(mm->context.tsb);
91 BUG_ON(tsb_paddr & (tsb_bytes - 1UL)); 90 BUG_ON(tsb_paddr & (tsb_bytes - 1UL));
92 91
@@ -99,55 +98,48 @@ static void setup_tsb_params(struct mm_struct *mm, unsigned long tsb_bytes)
99#ifdef DCACHE_ALIASING_POSSIBLE 98#ifdef DCACHE_ALIASING_POSSIBLE
100 base += (tsb_paddr & 8192); 99 base += (tsb_paddr & 8192);
101#endif 100#endif
102 tte |= _PAGE_SZ8K;
103 page_sz = 8192; 101 page_sz = 8192;
104 break; 102 break;
105 103
106 case 8192 << 1: 104 case 8192 << 1:
107 tsb_reg = 0x1UL; 105 tsb_reg = 0x1UL;
108 tte |= _PAGE_SZ64K;
109 page_sz = 64 * 1024; 106 page_sz = 64 * 1024;
110 break; 107 break;
111 108
112 case 8192 << 2: 109 case 8192 << 2:
113 tsb_reg = 0x2UL; 110 tsb_reg = 0x2UL;
114 tte |= _PAGE_SZ64K;
115 page_sz = 64 * 1024; 111 page_sz = 64 * 1024;
116 break; 112 break;
117 113
118 case 8192 << 3: 114 case 8192 << 3:
119 tsb_reg = 0x3UL; 115 tsb_reg = 0x3UL;
120 tte |= _PAGE_SZ64K;
121 page_sz = 64 * 1024; 116 page_sz = 64 * 1024;
122 break; 117 break;
123 118
124 case 8192 << 4: 119 case 8192 << 4:
125 tsb_reg = 0x4UL; 120 tsb_reg = 0x4UL;
126 tte |= _PAGE_SZ512K;
127 page_sz = 512 * 1024; 121 page_sz = 512 * 1024;
128 break; 122 break;
129 123
130 case 8192 << 5: 124 case 8192 << 5:
131 tsb_reg = 0x5UL; 125 tsb_reg = 0x5UL;
132 tte |= _PAGE_SZ512K;
133 page_sz = 512 * 1024; 126 page_sz = 512 * 1024;
134 break; 127 break;
135 128
136 case 8192 << 6: 129 case 8192 << 6:
137 tsb_reg = 0x6UL; 130 tsb_reg = 0x6UL;
138 tte |= _PAGE_SZ512K;
139 page_sz = 512 * 1024; 131 page_sz = 512 * 1024;
140 break; 132 break;
141 133
142 case 8192 << 7: 134 case 8192 << 7:
143 tsb_reg = 0x7UL; 135 tsb_reg = 0x7UL;
144 tte |= _PAGE_SZ4MB;
145 page_sz = 4 * 1024 * 1024; 136 page_sz = 4 * 1024 * 1024;
146 break; 137 break;
147 138
148 default: 139 default:
149 BUG(); 140 BUG();
150 }; 141 };
142 tte |= pte_sz_bits(page_sz);
151 143
152 if (tlb_type == cheetah_plus || tlb_type == hypervisor) { 144 if (tlb_type == cheetah_plus || tlb_type == hypervisor) {
153 /* Physical mapping, no locked TLB entry for TSB. */ 145 /* Physical mapping, no locked TLB entry for TSB. */
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-19 05:11:52 -0500