nop ! Delay slot (fill me)
TSB_LOAD_QUAD(%g1, %g4) ! Load TSB entry
cmp %g4, %g6 ! Compare TAG
- sethi %hi(_PAGE_EXEC), %g4 ! Setup exec check
+ sethi %hi(PAGE_EXEC), %g4 ! Setup exec check
/* ITLB ** ICACHE line 2: TSB compare and TLB load */
+ ldx [%g4 + %lo(PAGE_EXEC)], %g4
bne,pn %xcc, tsb_miss_itlb ! Miss
mov FAULT_CODE_ITLB, %g3
andcc %g5, %g4, %g0 ! Executable?
nop ! Delay slot, fill me
stxa %g5, [%g0] ASI_ITLB_DATA_IN ! Load TLB
retry ! Trap done
- nop
/* ITLB ** ICACHE line 3: */
nop
brgez,pn %g4, kvmap_dtlb_nonlinear
nop
-#define KERN_HIGHBITS ((_PAGE_VALID|_PAGE_SZ4MB)^0xfffff80000000000)
-#define KERN_LOWBITS (_PAGE_CP | _PAGE_CV | _PAGE_P | _PAGE_W)
-
- sethi %uhi(KERN_HIGHBITS), %g2
- or %g2, %ulo(KERN_HIGHBITS), %g2
- sllx %g2, 32, %g2
- or %g2, KERN_LOWBITS, %g2
-
-#undef KERN_HIGHBITS
-#undef KERN_LOWBITS
+ sethi %hi(kern_linear_pte_xor), %g2
+ ldx [%g2 + %lo(kern_linear_pte_xor)], %g2
.globl kvmap_linear_patch
kvmap_linear_patch:
16 /* orig-video-points */
};
-/* Typing sync at the prom prompt calls the function pointed to by
- * the sync callback which I set to the following function.
- * This should sync all filesystems and return, for now it just
- * prints out pretty messages and returns.
- */
-
void (*prom_palette)(int);
void (*prom_keyboard)(void);
prom_write(s, n);
}
-static struct console prom_console = {
- .name = "prom",
- .write = prom_console_write,
- .flags = CON_CONSDEV | CON_ENABLED,
- .index = -1,
-};
-
-#define PROM_TRUE -1
-#define PROM_FALSE 0
-
-/* Pretty sick eh? */
-int prom_callback(long *args)
-{
- struct console *cons, *saved_console = NULL;
- unsigned long flags;
- char *cmd;
- extern spinlock_t prom_entry_lock;
-
- if (!args)
- return -1;
- if (!(cmd = (char *)args[0]))
- return -1;
-
- /*
- * The callback can be invoked on the cpu that first dropped
- * into prom_cmdline after taking the serial interrupt, or on
- * a slave processor that was smp_captured() if the
- * administrator has done a switch-cpu inside obp. In either
- * case, the cpu is marked as in-interrupt. Drop IRQ locks.
- */
- irq_exit();
-
- /* XXX Revisit the locking here someday. This is a debugging
- * XXX feature so it isnt all that critical. -DaveM
- */
- local_irq_save(flags);
-
- spin_unlock(&prom_entry_lock);
- cons = console_drivers;
- while (cons) {
- unregister_console(cons);
- cons->flags &= ~(CON_PRINTBUFFER);
- cons->next = saved_console;
- saved_console = cons;
- cons = console_drivers;
- }
- register_console(&prom_console);
- if (!strcmp(cmd, "sync")) {
- prom_printf("PROM `%s' command...\n", cmd);
- show_free_areas();
- if (current->pid != 0) {
- local_irq_enable();
- sys_sync();
- local_irq_disable();
- }
- args[2] = 0;
- args[args[1] + 3] = -1;
- prom_printf("Returning to PROM\n");
- } else if (!strcmp(cmd, "va>tte-data")) {
- unsigned long ctx, va;
- unsigned long tte = 0;
- long res = PROM_FALSE;
-
- ctx = args[3];
- va = args[4];
- if (ctx) {
- /*
- * Find process owning ctx, lookup mapping.
- */
- struct task_struct *p;
- struct mm_struct *mm = NULL;
- pgd_t *pgdp;
- pud_t *pudp;
- pmd_t *pmdp;
- pte_t *ptep;
- pte_t pte;
-
- for_each_process(p) {
- mm = p->mm;
- if (CTX_NRBITS(mm->context) == ctx)
- break;
- }
- if (!mm ||
- CTX_NRBITS(mm->context) != ctx)
- goto done;
-
- pgdp = pgd_offset(mm, va);
- if (pgd_none(*pgdp))
- goto done;
- pudp = pud_offset(pgdp, va);
- if (pud_none(*pudp))
- goto done;
- pmdp = pmd_offset(pudp, va);
- if (pmd_none(*pmdp))
- goto done;
-
- /* Preemption implicitly disabled by virtue of
- * being called from inside OBP.
- */
- ptep = pte_offset_map(pmdp, va);
- pte = *ptep;
- if (pte_present(pte)) {
- tte = pte_val(pte);
- res = PROM_TRUE;
- }
- pte_unmap(ptep);
- goto done;
- }
-
- if ((va >= KERNBASE) && (va < (KERNBASE + (4 * 1024 * 1024)))) {
- if (tlb_type == spitfire) {
- extern unsigned long sparc64_kern_pri_context;
-
- /* Spitfire Errata #32 workaround */
- __asm__ __volatile__(
- "stxa %0, [%1] %2\n\t"
- "flush %%g6"
- : /* No outputs */
- : "r" (sparc64_kern_pri_context),
- "r" (PRIMARY_CONTEXT),
- "i" (ASI_DMMU));
- }
-
- /*
- * Locked down tlb entry.
- */
-
- if (tlb_type == spitfire) {
- tte = spitfire_get_dtlb_data(SPITFIRE_HIGHEST_LOCKED_TLBENT);
- res = PROM_TRUE;
- } else if (tlb_type == cheetah || tlb_type == cheetah_plus) {
- tte = cheetah_get_ldtlb_data(CHEETAH_HIGHEST_LOCKED_TLBENT);
- res = PROM_TRUE;
- }
- goto done;
- }
-
- if (va < PGDIR_SIZE) {
- /*
- * vmalloc or prom_inherited mapping.
- */
- pgd_t *pgdp;
- pud_t *pudp;
- pmd_t *pmdp;
- pte_t *ptep;
- pte_t pte;
- int error;
-
- if ((va >= LOW_OBP_ADDRESS) && (va < HI_OBP_ADDRESS)) {
- tte = prom_virt_to_phys(va, &error);
- if (!error)
- res = PROM_TRUE;
- goto done;
- }
- pgdp = pgd_offset_k(va);
- if (pgd_none(*pgdp))
- goto done;
- pudp = pud_offset(pgdp, va);
- if (pud_none(*pudp))
- goto done;
- pmdp = pmd_offset(pudp, va);
- if (pmd_none(*pmdp))
- goto done;
-
- /* Preemption implicitly disabled by virtue of
- * being called from inside OBP.
- */
- ptep = pte_offset_kernel(pmdp, va);
- pte = *ptep;
- if (pte_present(pte)) {
- tte = pte_val(pte);
- res = PROM_TRUE;
- }
- goto done;
- }
-
- if (va < PAGE_OFFSET) {
- /*
- * No mappings here.
- */
- goto done;
- }
-
- if (va & (1UL << 40)) {
- /*
- * I/O page.
- */
-
- tte = (__pa(va) & _PAGE_PADDR) |
- _PAGE_VALID | _PAGE_SZ4MB |
- _PAGE_E | _PAGE_P | _PAGE_W;
- res = PROM_TRUE;
- goto done;
- }
-
- /*
- * Normal page.
- */
- tte = (__pa(va) & _PAGE_PADDR) |
- _PAGE_VALID | _PAGE_SZ4MB |
- _PAGE_CP | _PAGE_CV | _PAGE_P | _PAGE_W;
- res = PROM_TRUE;
-
- done:
- if (res == PROM_TRUE) {
- args[2] = 3;
- args[args[1] + 3] = 0;
- args[args[1] + 4] = res;
- args[args[1] + 5] = tte;
- } else {
- args[2] = 2;
- args[args[1] + 3] = 0;
- args[args[1] + 4] = res;
- }
- } else if (!strcmp(cmd, ".soft1")) {
- unsigned long tte;
-
- tte = args[3];
- prom_printf("%lx:\"%s%s%s%s%s\" ",
- (tte & _PAGE_SOFT) >> 7,
- tte & _PAGE_MODIFIED ? "M" : "-",
- tte & _PAGE_ACCESSED ? "A" : "-",
- tte & _PAGE_READ ? "W" : "-",
- tte & _PAGE_WRITE ? "R" : "-",
- tte & _PAGE_PRESENT ? "P" : "-");
-
- args[2] = 2;
- args[args[1] + 3] = 0;
- args[args[1] + 4] = PROM_TRUE;
- } else if (!strcmp(cmd, ".soft2")) {
- unsigned long tte;
-
- tte = args[3];
- prom_printf("%lx ", (tte & 0x07FC000000000000UL) >> 50);
-
- args[2] = 2;
- args[args[1] + 3] = 0;
- args[args[1] + 4] = PROM_TRUE;
- } else {
- prom_printf("unknown PROM `%s' command...\n", cmd);
- }
- unregister_console(&prom_console);
- while (saved_console) {
- cons = saved_console;
- saved_console = cons->next;
- register_console(cons);
- }
- spin_lock(&prom_entry_lock);
- local_irq_restore(flags);
-
- /*
- * Restore in-interrupt status for a resume from obp.
- */
- irq_enter();
- return 0;
-}
-
unsigned int boot_flags = 0;
#define BOOTME_DEBUG 0x1
#define BOOTME_SINGLE 0x2
static struct pt_regs fake_swapper_regs = { { 0, }, 0, 0, 0, 0 };
-void register_prom_callbacks(void)
-{
- prom_setcallback(prom_callback);
- prom_feval(": linux-va>tte-data 2 \" va>tte-data\" $callback drop ; "
- "' linux-va>tte-data to va>tte-data");
- prom_feval(": linux-.soft1 1 \" .soft1\" $callback 2drop ; "
- "' linux-.soft1 to .soft1");
- prom_feval(": linux-.soft2 1 \" .soft2\" $callback 2drop ; "
- "' linux-.soft2 to .soft2");
-}
-
static void __init per_cpu_patch(void)
{
#ifdef CONFIG_SMP
/* Load TSB tag/pte into %g2/%g3 and compare the tag. */
ldda [%g1] ASI_QUAD_LDD_PHYS, %g2
cmp %g2, %g6
- sethi %hi(_PAGE_EXEC), %g7
+ sethi %hi(PAGE_EXEC), %g7
+ ldx [%g7 + %lo(PAGE_EXEC)], %g7
bne,a,pn %xcc, tsb_miss_page_table_walk
mov FAULT_CODE_ITLB, %g3
andcc %g3, %g7, %g0
/* If it is larger than the base page size, don't
* bother putting it into the TSB.
*/
- srlx %g5, 32, %g2
- sethi %hi(_PAGE_ALL_SZ_BITS >> 32), %g7
- and %g2, %g7, %g2
- sethi %hi(_PAGE_SZBITS >> 32), %g7
+ sethi %hi(_PAGE_ALL_SZ_BITS), %g7
+ ldx [%g7 + %lo(_PAGE_ALL_SZ_BITS)], %g7
+ and %g5, %g7, %g2
+ sethi %hi(_PAGE_SZBITS), %g7
+ ldx [%g7 + %lo(_PAGE_SZBITS)], %g7
cmp %g2, %g7
bne,a,pn %xcc, tsb_tlb_reload
TSB_STORE(%g1, %g0)
* disable preemption during the clear.
*/
-#define TTE_BITS_TOP (_PAGE_VALID | _PAGE_SZBITS)
-#define TTE_BITS_BOTTOM (_PAGE_CP | _PAGE_CV | _PAGE_P | _PAGE_L | _PAGE_W)
-
.text
.globl _clear_page
sethi %hi(PAGE_SIZE), %o4
sllx %g2, 32, %g2
- sethi %uhi(TTE_BITS_TOP), %g3
+ sethi %hi(PAGE_KERNEL_LOCKED), %g3
- sllx %g3, 32, %g3
+ ldx [%g3 + %lo(PAGE_KERNEL_LOCKED)], %g3
sub %o0, %g2, %g1 ! paddr
- or %g3, TTE_BITS_BOTTOM, %g3
and %o1, %o4, %o0 ! vaddr D-cache alias bit
or %g1, %g3, %g1 ! TTE data
* disable preemption during the clear.
*/
-#define TTE_BITS_TOP (_PAGE_VALID | _PAGE_SZBITS)
-#define TTE_BITS_BOTTOM (_PAGE_CP | _PAGE_CV | _PAGE_P | _PAGE_L | _PAGE_W)
#define DCACHE_SIZE (PAGE_SIZE * 2)
#if (PAGE_SHIFT == 13) || (PAGE_SHIFT == 19)
sethi %hi(PAGE_SIZE), %o3
sllx %g2, 32, %g2
- sethi %uhi(TTE_BITS_TOP), %g3
+ sethi %hi(PAGE_KERNEL_LOCKED), %g3
- sllx %g3, 32, %g3
+ ldx [%g3 + %lo(PAGE_KERNEL_LOCKED)], %g3
sub %o0, %g2, %g1 ! dest paddr
sub %o1, %g2, %g2 ! src paddr
- or %g3, TTE_BITS_BOTTOM, %g3
and %o2, %o3, %o0 ! vaddr D-cache alias bit
or %g1, %g3, %g1 ! dest TTE data
if (!pte_present(pte))
goto out;
- pa = (pte_val(pte) & _PAGE_PADDR);
+ pa = (pte_pfn(pte) << PAGE_SHIFT);
pa += (tpc & ~PAGE_MASK);
/* Use phys bypass so we don't pollute dtlb/dcache. */
#include <asm/page.h>
#include <asm/tlbflush.h>
-static inline pte_t mk_pte_io(unsigned long page, pgprot_t prot, int space)
-{
- pte_t pte;
- pte_val(pte) = (((page) | pgprot_val(prot) | _PAGE_E) &
- ~(unsigned long)_PAGE_CACHE);
- pte_val(pte) |= (((unsigned long)space) << 32);
- return pte;
-}
-
/* Remap IO memory, the same way as remap_pfn_range(), but use
* the obio memory space.
*
pte_t entry;
unsigned long curend = address + PAGE_SIZE;
- entry = mk_pte_io(offset, prot, space);
+ entry = mk_pte_io(offset, prot, space, PAGE_SIZE);
if (!(address & 0xffff)) {
- if (!(address & 0x3fffff) && !(offset & 0x3ffffe) && end >= address + 0x400000) {
- entry = mk_pte_io(offset,
- __pgprot(pgprot_val (prot) | _PAGE_SZ4MB),
- space);
+ if (PAGE_SIZE < (4 * 1024 * 1024) &&
+ !(address & 0x3fffff) &&
+ !(offset & 0x3ffffe) &&
+ end >= address + 0x400000) {
+ entry = mk_pte_io(offset, prot, space,
+ 4 * 1024 * 1024);
curend = address + 0x400000;
offset += 0x400000;
- } else if (!(address & 0x7ffff) && !(offset & 0x7fffe) && end >= address + 0x80000) {
- entry = mk_pte_io(offset,
- __pgprot(pgprot_val (prot) | _PAGE_SZ512K),
- space);
+ } else if (PAGE_SIZE < (512 * 1024) &&
+ !(address & 0x7ffff) &&
+ !(offset & 0x7fffe) &&
+ end >= address + 0x80000) {
+ entry = mk_pte_io(offset, prot, space,
+ 512 * 1024 * 1024);
curend = address + 0x80000;
offset += 0x80000;
- } else if (!(offset & 0xfffe) && end >= address + 0x10000) {
- entry = mk_pte_io(offset,
- __pgprot(pgprot_val (prot) | _PAGE_SZ64K),
- space);
+ } else if (PAGE_SIZE < (64 * 1024) &&
+ !(offset & 0xfffe) &&
+ end >= address + 0x10000) {
+ entry = mk_pte_io(offset, prot, space,
+ 64 * 1024);
curend = address + 0x10000;
offset += 0x10000;
} else
*/
#include <linux/config.h>
+#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/string.h>
unsigned long kern_base __read_mostly;
unsigned long kern_size __read_mostly;
unsigned long pfn_base __read_mostly;
+unsigned long kern_linear_pte_xor __read_mostly;
/* get_new_mmu_context() uses "cache + 1". */
DEFINE_SPINLOCK(ctx_alloc_lock);
__tsb_insert(tsb_addr, tag, pte);
}
+unsigned long _PAGE_ALL_SZ_BITS __read_mostly;
+unsigned long _PAGE_SZBITS __read_mostly;
+
void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t pte)
{
struct mm_struct *mm;
struct linux_prom_translation prom_trans[512] __read_mostly;
unsigned int prom_trans_ents __read_mostly;
-extern unsigned long prom_boot_page;
-extern void prom_remap(unsigned long physpage, unsigned long virtpage, int mmu_ihandle);
-extern int prom_get_mmu_ihandle(void);
-extern void register_prom_callbacks(void);
-
/* Exported for SMP bootup purposes. */
unsigned long kern_locked_tte_data;
-/*
- * Translate PROM's mapping we capture at boot time into physical address.
- * The second parameter is only set from prom_callback() invocations.
- */
-unsigned long prom_virt_to_phys(unsigned long promva, int *error)
-{
- int i;
-
- for (i = 0; i < prom_trans_ents; i++) {
- struct linux_prom_translation *p = &prom_trans[i];
-
- if (promva >= p->virt &&
- promva < (p->virt + p->size)) {
- unsigned long base = p->data & _PAGE_PADDR;
-
- if (error)
- *error = 0;
- return base + (promva & (8192 - 1));
- }
- }
- if (error)
- *error = 1;
- return 0UL;
-}
-
/* The obp translations are saved based on 8k pagesize, since obp can
* use a mixture of pagesizes. Misses to the LOW_OBP_ADDRESS ->
* HI_OBP_ADDRESS range are handled in ktlb.S.
"3" (arg2), "4" (arg3));
}
+static unsigned long kern_large_tte(unsigned long paddr);
+
static void __init remap_kernel(void)
{
unsigned long phys_page, tte_vaddr, tte_data;
tte_vaddr = (unsigned long) KERNBASE;
phys_page = (prom_boot_mapping_phys_low >> 22UL) << 22UL;
- tte_data = (phys_page | (_PAGE_VALID | _PAGE_SZ4MB |
- _PAGE_CP | _PAGE_CV | _PAGE_P |
- _PAGE_L | _PAGE_W));
+ tte_data = kern_large_tte(phys_page);
kern_locked_tte_data = tte_data;
prom_printf("Remapping the kernel... ");
remap_kernel();
prom_printf("done.\n");
-
- prom_printf("Registering callbacks... ");
- register_prom_callbacks();
- prom_printf("done.\n");
}
void prom_world(int enter)
}
#endif /* DCACHE_ALIASING_POSSIBLE */
-/* If not locked, zap it. */
-void __flush_tlb_all(void)
-{
- unsigned long pstate;
- int i;
-
- __asm__ __volatile__("flushw\n\t"
- "rdpr %%pstate, %0\n\t"
- "wrpr %0, %1, %%pstate"
- : "=r" (pstate)
- : "i" (PSTATE_IE));
- if (tlb_type == spitfire) {
- for (i = 0; i < 64; i++) {
- /* Spitfire Errata #32 workaround */
- /* NOTE: Always runs on spitfire, so no
- * cheetah+ page size encodings.
- */
- __asm__ __volatile__("stxa %0, [%1] %2\n\t"
- "flush %%g6"
- : /* No outputs */
- : "r" (0),
- "r" (PRIMARY_CONTEXT), "i" (ASI_DMMU));
-
- if (!(spitfire_get_dtlb_data(i) & _PAGE_L)) {
- __asm__ __volatile__("stxa %%g0, [%0] %1\n\t"
- "membar #Sync"
- : /* no outputs */
- : "r" (TLB_TAG_ACCESS), "i" (ASI_DMMU));
- spitfire_put_dtlb_data(i, 0x0UL);
- }
-
- /* Spitfire Errata #32 workaround */
- /* NOTE: Always runs on spitfire, so no
- * cheetah+ page size encodings.
- */
- __asm__ __volatile__("stxa %0, [%1] %2\n\t"
- "flush %%g6"
- : /* No outputs */
- : "r" (0),
- "r" (PRIMARY_CONTEXT), "i" (ASI_DMMU));
-
- if (!(spitfire_get_itlb_data(i) & _PAGE_L)) {
- __asm__ __volatile__("stxa %%g0, [%0] %1\n\t"
- "membar #Sync"
- : /* no outputs */
- : "r" (TLB_TAG_ACCESS), "i" (ASI_IMMU));
- spitfire_put_itlb_data(i, 0x0UL);
- }
- }
- } else if (tlb_type == cheetah || tlb_type == cheetah_plus) {
- cheetah_flush_dtlb_all();
- cheetah_flush_itlb_all();
- }
- __asm__ __volatile__("wrpr %0, 0, %%pstate"
- : : "r" (pstate));
-}
-
/* Caller does TLB context flushing on local CPU if necessary.
* The caller also ensures that CTX_VALID(mm->context) is false.
*
static unsigned long last_valid_pfn;
pgd_t swapper_pg_dir[2048];
+static void sun4u_pgprot_init(void);
+static void sun4v_pgprot_init(void);
+
void __init paging_init(void)
{
unsigned long end_pfn, pages_avail, shift;
kern_base = (prom_boot_mapping_phys_low >> 22UL) << 22UL;
kern_size = (unsigned long)&_end - (unsigned long)KERNBASE;
+ if (tlb_type == hypervisor)
+ sun4v_pgprot_init();
+ else
+ sun4u_pgprot_init();
+
if (tlb_type == cheetah_plus ||
tlb_type == hypervisor)
tsb_phys_patch();
}
}
#endif
+
+/* SUN4U pte bits... */
+#define _PAGE_SZ4MB_4U 0x6000000000000000 /* 4MB Page */
+#define _PAGE_SZ512K_4U 0x4000000000000000 /* 512K Page */
+#define _PAGE_SZ64K_4U 0x2000000000000000 /* 64K Page */
+#define _PAGE_SZ8K_4U 0x0000000000000000 /* 8K Page */
+#define _PAGE_NFO_4U 0x1000000000000000 /* No Fault Only */
+#define _PAGE_IE_4U 0x0800000000000000 /* Invert Endianness */
+#define _PAGE_SOFT2_4U 0x07FC000000000000 /* Software bits, set 2 */
+#define _PAGE_RES1_4U 0x0002000000000000 /* Reserved */
+#define _PAGE_SZ32MB_4U 0x0001000000000000 /* (Panther) 32MB page */
+#define _PAGE_SZ256MB_4U 0x2001000000000000 /* (Panther) 256MB page */
+#define _PAGE_SN_4U 0x0000800000000000 /* (Cheetah) Snoop */
+#define _PAGE_RES2_4U 0x0000780000000000 /* Reserved */
+#define _PAGE_PADDR_4U 0x000007FFFFFFE000 /* (Cheetah) paddr[42:13] */
+#define _PAGE_SOFT_4U 0x0000000000001F80 /* Software bits: */
+#define _PAGE_EXEC_4U 0x0000000000001000 /* Executable SW bit */
+#define _PAGE_MODIFIED_4U 0x0000000000000800 /* Modified (dirty) */
+#define _PAGE_FILE_4U 0x0000000000000800 /* Pagecache page */
+#define _PAGE_ACCESSED_4U 0x0000000000000400 /* Accessed (ref'd) */
+#define _PAGE_READ_4U 0x0000000000000200 /* Readable SW Bit */
+#define _PAGE_WRITE_4U 0x0000000000000100 /* Writable SW Bit */
+#define _PAGE_PRESENT_4U 0x0000000000000080 /* Present */
+#define _PAGE_L_4U 0x0000000000000040 /* Locked TTE */
+#define _PAGE_CP_4U 0x0000000000000020 /* Cacheable in P-Cache */
+#define _PAGE_CV_4U 0x0000000000000010 /* Cacheable in V-Cache */
+#define _PAGE_E_4U 0x0000000000000008 /* side-Effect */
+#define _PAGE_P_4U 0x0000000000000004 /* Privileged Page */
+#define _PAGE_W_4U 0x0000000000000002 /* Writable */
+
+/* SUN4V pte bits... */
+#define _PAGE_NFO_4V 0x4000000000000000 /* No Fault Only */
+#define _PAGE_SOFT2_4V 0x3F00000000000000 /* Software bits, set 2 */
+#define _PAGE_MODIFIED_4V 0x2000000000000000 /* Modified (dirty) */
+#define _PAGE_ACCESSED_4V 0x1000000000000000 /* Accessed (ref'd) */
+#define _PAGE_READ_4V 0x0800000000000000 /* Readable SW Bit */
+#define _PAGE_WRITE_4V 0x0400000000000000 /* Writable SW Bit */
+#define _PAGE_PADDR_4V 0x00FFFFFFFFFFE000 /* paddr[55:13] */
+#define _PAGE_IE_4V 0x0000000000001000 /* Invert Endianness */
+#define _PAGE_E_4V 0x0000000000000800 /* side-Effect */
+#define _PAGE_CP_4V 0x0000000000000400 /* Cacheable in P-Cache */
+#define _PAGE_CV_4V 0x0000000000000200 /* Cacheable in V-Cache */
+#define _PAGE_P_4V 0x0000000000000100 /* Privileged Page */
+#define _PAGE_EXEC_4V 0x0000000000000080 /* Executable Page */
+#define _PAGE_W_4V 0x0000000000000040 /* Writable */
+#define _PAGE_SOFT_4V 0x0000000000000030 /* Software bits */
+#define _PAGE_FILE_4V 0x0000000000000020 /* Pagecache page */
+#define _PAGE_PRESENT_4V 0x0000000000000010 /* Present */
+#define _PAGE_RESV_4V 0x0000000000000008 /* Reserved */
+#define _PAGE_SZ16GB_4V 0x0000000000000007 /* 16GB Page */
+#define _PAGE_SZ2GB_4V 0x0000000000000006 /* 2GB Page */
+#define _PAGE_SZ256MB_4V 0x0000000000000005 /* 256MB Page */
+#define _PAGE_SZ32MB_4V 0x0000000000000004 /* 32MB Page */
+#define _PAGE_SZ4MB_4V 0x0000000000000003 /* 4MB Page */
+#define _PAGE_SZ512K_4V 0x0000000000000002 /* 512K Page */
+#define _PAGE_SZ64K_4V 0x0000000000000001 /* 64K Page */
+#define _PAGE_SZ8K_4V 0x0000000000000000 /* 8K Page */
+
+#if PAGE_SHIFT == 13
+#define _PAGE_SZBITS_4U _PAGE_SZ8K_4U
+#define _PAGE_SZBITS_4V _PAGE_SZ8K_4V
+#elif PAGE_SHIFT == 16
+#define _PAGE_SZBITS_4U _PAGE_SZ64K_4U
+#define _PAGE_SZBITS_4V _PAGE_SZ64K_4V
+#elif PAGE_SHIFT == 19
+#define _PAGE_SZBITS_4U _PAGE_SZ512K_4U
+#define _PAGE_SZBITS_4V _PAGE_SZ512K_4V
+#elif PAGE_SHIFT == 22
+#define _PAGE_SZBITS_4U _PAGE_SZ4MB_4U
+#define _PAGE_SZBITS_4V _PAGE_SZ4MB_4V
+#else
+#error Wrong PAGE_SHIFT specified
+#endif
+
+#if defined(CONFIG_HUGETLB_PAGE_SIZE_4MB)
+#define _PAGE_SZHUGE_4U _PAGE_SZ4MB_4U
+#define _PAGE_SZHUGE_4V _PAGE_SZ4MB_4V
+#elif defined(CONFIG_HUGETLB_PAGE_SIZE_512K)
+#define _PAGE_SZHUGE_4U _PAGE_SZ512K_4U
+#define _PAGE_SZHUGE_4V _PAGE_SZ512K_4V
+#elif defined(CONFIG_HUGETLB_PAGE_SIZE_64K)
+#define _PAGE_SZHUGE_4U _PAGE_SZ64K_4U
+#define _PAGE_SZHUGE_4V _PAGE_SZ64K_4V
+#endif
+
+#define _PAGE_CACHE_4U (_PAGE_CP_4U | _PAGE_CV_4U)
+#define _PAGE_CACHE_4V (_PAGE_CP_4V | _PAGE_CV_4V)
+#define __DIRTY_BITS_4U (_PAGE_MODIFIED_4U | _PAGE_WRITE_4U | _PAGE_W_4U)
+#define __DIRTY_BITS_4V (_PAGE_MODIFIED_4V | _PAGE_WRITE_4V | _PAGE_W_4V)
+#define __ACCESS_BITS_4U (_PAGE_ACCESSED_4U | _PAGE_READ_4U | _PAGE_R)
+#define __ACCESS_BITS_4V (_PAGE_ACCESSED_4V | _PAGE_READ_4V | _PAGE_R)
+
+pgprot_t PAGE_KERNEL __read_mostly;
+EXPORT_SYMBOL(PAGE_KERNEL);
+
+pgprot_t PAGE_KERNEL_LOCKED __read_mostly;
+pgprot_t PAGE_COPY __read_mostly;
+pgprot_t PAGE_EXEC __read_mostly;
+unsigned long pg_iobits __read_mostly;
+
+unsigned long _PAGE_IE __read_mostly;
+unsigned long _PAGE_E __read_mostly;
+unsigned long _PAGE_CACHE __read_mostly;
+
+static void prot_init_common(unsigned long page_none,
+ unsigned long page_shared,
+ unsigned long page_copy,
+ unsigned long page_readonly,
+ unsigned long page_exec_bit)
+{
+ PAGE_COPY = __pgprot(page_copy);
+
+ protection_map[0x0] = __pgprot(page_none);
+ protection_map[0x1] = __pgprot(page_readonly & ~page_exec_bit);
+ protection_map[0x2] = __pgprot(page_copy & ~page_exec_bit);
+ protection_map[0x3] = __pgprot(page_copy & ~page_exec_bit);
+ protection_map[0x4] = __pgprot(page_readonly);
+ protection_map[0x5] = __pgprot(page_readonly);
+ protection_map[0x6] = __pgprot(page_copy);
+ protection_map[0x7] = __pgprot(page_copy);
+ protection_map[0x8] = __pgprot(page_none);
+ protection_map[0x9] = __pgprot(page_readonly & ~page_exec_bit);
+ protection_map[0xa] = __pgprot(page_shared & ~page_exec_bit);
+ protection_map[0xb] = __pgprot(page_shared & ~page_exec_bit);
+ protection_map[0xc] = __pgprot(page_readonly);
+ protection_map[0xd] = __pgprot(page_readonly);
+ protection_map[0xe] = __pgprot(page_shared);
+ protection_map[0xf] = __pgprot(page_shared);
+}
+
+static void __init sun4u_pgprot_init(void)
+{
+ unsigned long page_none, page_shared, page_copy, page_readonly;
+ unsigned long page_exec_bit;
+
+ PAGE_KERNEL = __pgprot (_PAGE_PRESENT_4U | _PAGE_VALID |
+ _PAGE_CACHE_4U | _PAGE_P_4U |
+ __ACCESS_BITS_4U | __DIRTY_BITS_4U |
+ _PAGE_EXEC_4U);
+ PAGE_KERNEL_LOCKED = __pgprot (_PAGE_PRESENT_4U | _PAGE_VALID |
+ _PAGE_CACHE_4U | _PAGE_P_4U |
+ __ACCESS_BITS_4U | __DIRTY_BITS_4U |
+ _PAGE_EXEC_4U | _PAGE_L_4U);
+ PAGE_EXEC = __pgprot(_PAGE_EXEC_4U);
+
+ _PAGE_IE = _PAGE_IE_4U;
+ _PAGE_E = _PAGE_E_4U;
+ _PAGE_CACHE = _PAGE_CACHE_4U;
+
+ pg_iobits = (_PAGE_VALID | _PAGE_PRESENT_4U | __DIRTY_BITS_4U |
+ __ACCESS_BITS_4U | _PAGE_E_4U);
+
+ kern_linear_pte_xor = (_PAGE_VALID | _PAGE_SZ4MB_4U) ^
+ 0xfffff80000000000;
+ kern_linear_pte_xor |= (_PAGE_CP_4U | _PAGE_CV_4U |
+ _PAGE_P_4U | _PAGE_W_4U);
+
+ _PAGE_SZBITS = _PAGE_SZBITS_4U;
+ _PAGE_ALL_SZ_BITS = (_PAGE_SZ4MB_4U | _PAGE_SZ512K_4U |
+ _PAGE_SZ64K_4U | _PAGE_SZ8K_4U |
+ _PAGE_SZ32MB_4U | _PAGE_SZ256MB_4U);
+
+
+ page_none = _PAGE_PRESENT_4U | _PAGE_ACCESSED_4U | _PAGE_CACHE_4U;
+ page_shared = (_PAGE_VALID | _PAGE_PRESENT_4U | _PAGE_CACHE_4U |
+ __ACCESS_BITS_4U | _PAGE_WRITE_4U | _PAGE_EXEC_4U);
+ page_copy = (_PAGE_VALID | _PAGE_PRESENT_4U | _PAGE_CACHE_4U |
+ __ACCESS_BITS_4U | _PAGE_EXEC_4U);
+ page_readonly = (_PAGE_VALID | _PAGE_PRESENT_4U | _PAGE_CACHE_4U |
+ __ACCESS_BITS_4U | _PAGE_EXEC_4U);
+
+ page_exec_bit = _PAGE_EXEC_4U;
+
+ prot_init_common(page_none, page_shared, page_copy, page_readonly,
+ page_exec_bit);
+}
+
+static void __init sun4v_pgprot_init(void)
+{
+ unsigned long page_none, page_shared, page_copy, page_readonly;
+ unsigned long page_exec_bit;
+
+ PAGE_KERNEL = __pgprot (_PAGE_PRESENT_4V | _PAGE_VALID |
+ _PAGE_CACHE_4V | _PAGE_P_4V |
+ __ACCESS_BITS_4V | __DIRTY_BITS_4V |
+ _PAGE_EXEC_4V);
+ PAGE_KERNEL_LOCKED = PAGE_KERNEL;
+ PAGE_EXEC = __pgprot(_PAGE_EXEC_4V);
+
+ _PAGE_IE = _PAGE_IE_4V;
+ _PAGE_E = _PAGE_E_4V;
+ _PAGE_CACHE = _PAGE_CACHE_4V;
+
+ kern_linear_pte_xor = (_PAGE_VALID | _PAGE_SZ4MB_4V) ^
+ 0xfffff80000000000;
+ kern_linear_pte_xor |= (_PAGE_CP_4V | _PAGE_CV_4V |
+ _PAGE_P_4V | _PAGE_W_4V);
+
+ pg_iobits = (_PAGE_VALID | _PAGE_PRESENT_4V | __DIRTY_BITS_4V |
+ __ACCESS_BITS_4V | _PAGE_E_4V);
+
+ _PAGE_SZBITS = _PAGE_SZBITS_4V;
+ _PAGE_ALL_SZ_BITS = (_PAGE_SZ16GB_4V | _PAGE_SZ2GB_4V |
+ _PAGE_SZ256MB_4V | _PAGE_SZ32MB_4V |
+ _PAGE_SZ4MB_4V | _PAGE_SZ512K_4V |
+ _PAGE_SZ64K_4V | _PAGE_SZ8K_4V);
+
+ page_none = _PAGE_PRESENT_4V | _PAGE_ACCESSED_4V | _PAGE_CACHE_4V;
+ page_shared = (_PAGE_VALID | _PAGE_PRESENT_4V | _PAGE_CACHE_4V |
+ __ACCESS_BITS_4V | _PAGE_WRITE_4V | _PAGE_EXEC_4V);
+ page_copy = (_PAGE_VALID | _PAGE_PRESENT_4V | _PAGE_CACHE_4V |
+ __ACCESS_BITS_4V | _PAGE_EXEC_4V);
+ page_readonly = (_PAGE_VALID | _PAGE_PRESENT_4V | _PAGE_CACHE_4V |
+ __ACCESS_BITS_4V | _PAGE_EXEC_4V);
+
+ page_exec_bit = _PAGE_EXEC_4V;
+
+ prot_init_common(page_none, page_shared, page_copy, page_readonly,
+ page_exec_bit);
+}
+
+unsigned long pte_sz_bits(unsigned long sz)
+{
+ if (tlb_type == hypervisor) {
+ switch (sz) {
+ case 8 * 1024:
+ default:
+ return _PAGE_SZ8K_4V;
+ case 64 * 1024:
+ return _PAGE_SZ64K_4V;
+ case 512 * 1024:
+ return _PAGE_SZ512K_4V;
+ case 4 * 1024 * 1024:
+ return _PAGE_SZ4MB_4V;
+ };
+ } else {
+ switch (sz) {
+ case 8 * 1024:
+ default:
+ return _PAGE_SZ8K_4U;
+ case 64 * 1024:
+ return _PAGE_SZ64K_4U;
+ case 512 * 1024:
+ return _PAGE_SZ512K_4U;
+ case 4 * 1024 * 1024:
+ return _PAGE_SZ4MB_4U;
+ };
+ }
+}
+
+pte_t mk_pte_io(unsigned long page, pgprot_t prot, int space, unsigned long page_size)
+{
+ pte_t pte;
+ if (tlb_type == hypervisor) {
+ pte_val(pte) = (((page) | pgprot_val(prot) | _PAGE_E_4V) &
+ ~(unsigned long)_PAGE_CACHE_4V);
+ } else {
+ pte_val(pte) = (((page) | pgprot_val(prot) | _PAGE_E_4U) &
+ ~(unsigned long)_PAGE_CACHE_4U);
+ }
+ pte_val(pte) |= (((unsigned long)space) << 32);
+ pte_val(pte) |= pte_sz_bits(page_size);
+ return pte;
+}
+
+unsigned long pte_present(pte_t pte)
+{
+ return (pte_val(pte) &
+ ((tlb_type == hypervisor) ?
+ _PAGE_PRESENT_4V : _PAGE_PRESENT_4U));
+}
+
+unsigned long pte_file(pte_t pte)
+{
+ return (pte_val(pte) &
+ ((tlb_type == hypervisor) ?
+ _PAGE_FILE_4V : _PAGE_FILE_4U));
+}
+
+unsigned long pte_read(pte_t pte)
+{
+ return (pte_val(pte) &
+ ((tlb_type == hypervisor) ?
+ _PAGE_READ_4V : _PAGE_READ_4U));
+}
+
+unsigned long pte_exec(pte_t pte)
+{
+ return (pte_val(pte) &
+ ((tlb_type == hypervisor) ?
+ _PAGE_EXEC_4V : _PAGE_EXEC_4U));
+}
+
+unsigned long pte_write(pte_t pte)
+{
+ return (pte_val(pte) &
+ ((tlb_type == hypervisor) ?
+ _PAGE_WRITE_4V : _PAGE_WRITE_4U));
+}
+
+unsigned long pte_dirty(pte_t pte)
+{
+ return (pte_val(pte) &
+ ((tlb_type == hypervisor) ?
+ _PAGE_MODIFIED_4V : _PAGE_MODIFIED_4U));
+}
+
+unsigned long pte_young(pte_t pte)
+{
+ return (pte_val(pte) &
+ ((tlb_type == hypervisor) ?
+ _PAGE_ACCESSED_4V : _PAGE_ACCESSED_4U));
+}
+
+pte_t pte_wrprotect(pte_t pte)
+{
+ unsigned long mask = _PAGE_WRITE_4U | _PAGE_W_4U;
+
+ if (tlb_type == hypervisor)
+ mask = _PAGE_WRITE_4V | _PAGE_W_4V;
+
+ return __pte(pte_val(pte) & ~mask);
+}
+
+pte_t pte_rdprotect(pte_t pte)
+{
+ unsigned long mask = _PAGE_R | _PAGE_READ_4U;
+
+ if (tlb_type == hypervisor)
+ mask = _PAGE_R | _PAGE_READ_4V;
+
+ return __pte(pte_val(pte) & ~mask);
+}
+
+pte_t pte_mkclean(pte_t pte)
+{
+ unsigned long mask = _PAGE_MODIFIED_4U | _PAGE_W_4U;
+
+ if (tlb_type == hypervisor)
+ mask = _PAGE_MODIFIED_4V | _PAGE_W_4V;
+
+ return __pte(pte_val(pte) & ~mask);
+}
+
+pte_t pte_mkold(pte_t pte)
+{
+ unsigned long mask = _PAGE_R | _PAGE_ACCESSED_4U;
+
+ if (tlb_type == hypervisor)
+ mask = _PAGE_R | _PAGE_ACCESSED_4V;
+
+ return __pte(pte_val(pte) & ~mask);
+}
+
+pte_t pte_mkyoung(pte_t pte)
+{
+ unsigned long mask = _PAGE_R | _PAGE_ACCESSED_4U;
+
+ if (tlb_type == hypervisor)
+ mask = _PAGE_R | _PAGE_ACCESSED_4V;
+
+ return __pte(pte_val(pte) | mask);
+}
+
+pte_t pte_mkwrite(pte_t pte)
+{
+ unsigned long mask = _PAGE_WRITE_4U;
+
+ if (tlb_type == hypervisor)
+ mask = _PAGE_WRITE_4V;
+
+ return __pte(pte_val(pte) | mask);
+}
+
+pte_t pte_mkdirty(pte_t pte)
+{
+ unsigned long mask = _PAGE_MODIFIED_4U | _PAGE_W_4U;
+
+ if (tlb_type == hypervisor)
+ mask = _PAGE_MODIFIED_4V | _PAGE_W_4V;
+
+ return __pte(pte_val(pte) | mask);
+}
+
+pte_t pte_mkhuge(pte_t pte)
+{
+ unsigned long mask = _PAGE_SZHUGE_4U;
+
+ if (tlb_type == hypervisor)
+ mask = _PAGE_SZHUGE_4V;
+
+ return __pte(pte_val(pte) | mask);
+}
+
+pte_t pgoff_to_pte(unsigned long off)
+{
+ unsigned long bit = _PAGE_FILE_4U;
+
+ if (tlb_type == hypervisor)
+ bit = _PAGE_FILE_4V;
+
+ return __pte((off << PAGE_SHIFT) | bit);
+}
+
+pgprot_t pgprot_noncached(pgprot_t prot)
+{
+ unsigned long val = pgprot_val(prot);
+ unsigned long off = _PAGE_CP_4U | _PAGE_CV_4U;
+ unsigned long on = _PAGE_E_4U;
+
+ if (tlb_type == hypervisor) {
+ off = _PAGE_CP_4V | _PAGE_CV_4V;
+ on = _PAGE_E_4V;
+ }
+
+ return __pgprot((val & ~off) | on);
+}
+
+pte_t pfn_pte(unsigned long pfn, pgprot_t prot)
+{
+ unsigned long sz_bits = _PAGE_SZBITS_4U;
+
+ if (tlb_type == hypervisor)
+ sz_bits = _PAGE_SZBITS_4V;
+
+ return __pte((pfn << PAGE_SHIFT) | pgprot_val(prot) | sz_bits);
+}
+
+unsigned long pte_pfn(pte_t pte)
+{
+ unsigned long mask = _PAGE_PADDR_4U;
+
+ if (tlb_type == hypervisor)
+ mask = _PAGE_PADDR_4V;
+
+ return (pte_val(pte) & mask) >> PAGE_SHIFT;
+}
+
+pte_t pte_modify(pte_t orig_pte, pgprot_t new_prot)
+{
+ unsigned long preserve_mask;
+ unsigned long val;
+
+ preserve_mask = (_PAGE_PADDR_4U |
+ _PAGE_MODIFIED_4U |
+ _PAGE_ACCESSED_4U |
+ _PAGE_CP_4U |
+ _PAGE_CV_4U |
+ _PAGE_E_4U |
+ _PAGE_PRESENT_4U |
+ _PAGE_SZBITS_4U);
+ if (tlb_type == hypervisor)
+ preserve_mask = (_PAGE_PADDR_4V |
+ _PAGE_MODIFIED_4V |
+ _PAGE_ACCESSED_4V |
+ _PAGE_CP_4V |
+ _PAGE_CV_4V |
+ _PAGE_E_4V |
+ _PAGE_PRESENT_4V |
+ _PAGE_SZBITS_4V);
+
+ val = (pte_val(orig_pte) & preserve_mask);
+
+ return __pte(val | (pgprot_val(new_prot) & ~preserve_mask));
+}
+
+static unsigned long kern_large_tte(unsigned long paddr)
+{
+ unsigned long val;
+
+ val = (_PAGE_VALID | _PAGE_SZ4MB_4U |
+ _PAGE_CP_4U | _PAGE_CV_4U | _PAGE_P_4U |
+ _PAGE_EXEC_4U | _PAGE_L_4U | _PAGE_W_4U);
+ if (tlb_type == hypervisor)
+ val = (_PAGE_VALID | _PAGE_SZ4MB_4V |
+ _PAGE_CP_4V | _PAGE_CV_4V | _PAGE_P_4V |
+ _PAGE_EXEC_4V | _PAGE_W_4V);
+
+ return val | paddr;
+}
+
+/*
+ * Translate PROM's mapping we capture at boot time into physical address.
+ * The second parameter is only set from prom_callback() invocations.
+ */
+unsigned long prom_virt_to_phys(unsigned long promva, int *error)
+{
+ unsigned long mask;
+ int i;
+
+ mask = _PAGE_PADDR_4U;
+ if (tlb_type == hypervisor)
+ mask = _PAGE_PADDR_4V;
+
+ for (i = 0; i < prom_trans_ents; i++) {
+ struct linux_prom_translation *p = &prom_trans[i];
+
+ if (promva >= p->virt &&
+ promva < (p->virt + p->size)) {
+ unsigned long base = p->data & mask;
+
+ if (error)
+ *error = 0;
+ return base + (promva & (8192 - 1));
+ }
+ }
+ if (error)
+ *error = 1;
+ return 0UL;
+}
+
+/* XXX We should kill off this ugly thing at so me point. XXX */
+unsigned long sun4u_get_pte(unsigned long addr)
+{
+ pgd_t *pgdp;
+ pud_t *pudp;
+ pmd_t *pmdp;
+ pte_t *ptep;
+ unsigned long mask = _PAGE_PADDR_4U;
+
+ if (tlb_type == hypervisor)
+ mask = _PAGE_PADDR_4V;
+
+ if (addr >= PAGE_OFFSET)
+ return addr & mask;
+
+ if ((addr >= LOW_OBP_ADDRESS) && (addr < HI_OBP_ADDRESS))
+ return prom_virt_to_phys(addr, NULL);
+
+ pgdp = pgd_offset_k(addr);
+ pudp = pud_offset(pgdp, addr);
+ pmdp = pmd_offset(pudp, addr);
+ ptep = pte_offset_kernel(pmdp, addr);
+
+ return pte_val(*ptep) & mask;
+}
+
+/* If not locked, zap it. */
+void __flush_tlb_all(void)
+{
+ unsigned long pstate;
+ int i;
+
+ __asm__ __volatile__("flushw\n\t"
+ "rdpr %%pstate, %0\n\t"
+ "wrpr %0, %1, %%pstate"
+ : "=r" (pstate)
+ : "i" (PSTATE_IE));
+ if (tlb_type == spitfire) {
+ for (i = 0; i < 64; i++) {
+ /* Spitfire Errata #32 workaround */
+ /* NOTE: Always runs on spitfire, so no
+ * cheetah+ page size encodings.
+ */
+ __asm__ __volatile__("stxa %0, [%1] %2\n\t"
+ "flush %%g6"
+ : /* No outputs */
+ : "r" (0),
+ "r" (PRIMARY_CONTEXT), "i" (ASI_DMMU));
+
+ if (!(spitfire_get_dtlb_data(i) & _PAGE_L_4U)) {
+ __asm__ __volatile__("stxa %%g0, [%0] %1\n\t"
+ "membar #Sync"
+ : /* no outputs */
+ : "r" (TLB_TAG_ACCESS), "i" (ASI_DMMU));
+ spitfire_put_dtlb_data(i, 0x0UL);
+ }
+
+ /* Spitfire Errata #32 workaround */
+ /* NOTE: Always runs on spitfire, so no
+ * cheetah+ page size encodings.
+ */
+ __asm__ __volatile__("stxa %0, [%1] %2\n\t"
+ "flush %%g6"
+ : /* No outputs */
+ : "r" (0),
+ "r" (PRIMARY_CONTEXT), "i" (ASI_DMMU));
+
+ if (!(spitfire_get_itlb_data(i) & _PAGE_L_4U)) {
+ __asm__ __volatile__("stxa %%g0, [%0] %1\n\t"
+ "membar #Sync"
+ : /* no outputs */
+ : "r" (TLB_TAG_ACCESS), "i" (ASI_IMMU));
+ spitfire_put_itlb_data(i, 0x0UL);
+ }
+ }
+ } else if (tlb_type == cheetah || tlb_type == cheetah_plus) {
+ cheetah_flush_dtlb_all();
+ cheetah_flush_itlb_all();
+ }
+ __asm__ __volatile__("wrpr %0, 0, %%pstate"
+ : : "r" (pstate));
+}
mm->context.tsb_nentries = tsb_bytes / sizeof(struct tsb);
base = TSBMAP_BASE;
- tte = (_PAGE_VALID | _PAGE_L | _PAGE_CP |
- _PAGE_CV | _PAGE_P | _PAGE_W);
+ tte = pgprot_val(PAGE_KERNEL_LOCKED);
tsb_paddr = __pa(mm->context.tsb);
BUG_ON(tsb_paddr & (tsb_bytes - 1UL));
#ifdef DCACHE_ALIASING_POSSIBLE
base += (tsb_paddr & 8192);
#endif
- tte |= _PAGE_SZ8K;
page_sz = 8192;
break;
case 8192 << 1:
tsb_reg = 0x1UL;
- tte |= _PAGE_SZ64K;
page_sz = 64 * 1024;
break;
case 8192 << 2:
tsb_reg = 0x2UL;
- tte |= _PAGE_SZ64K;
page_sz = 64 * 1024;
break;
case 8192 << 3:
tsb_reg = 0x3UL;
- tte |= _PAGE_SZ64K;
page_sz = 64 * 1024;
break;
case 8192 << 4:
tsb_reg = 0x4UL;
- tte |= _PAGE_SZ512K;
page_sz = 512 * 1024;
break;
case 8192 << 5:
tsb_reg = 0x5UL;
- tte |= _PAGE_SZ512K;
page_sz = 512 * 1024;
break;
case 8192 << 6:
tsb_reg = 0x6UL;
- tte |= _PAGE_SZ512K;
page_sz = 512 * 1024;
break;
case 8192 << 7:
tsb_reg = 0x7UL;
- tte |= _PAGE_SZ4MB;
page_sz = 4 * 1024 * 1024;
break;
default:
BUG();
};
+ tte |= pte_sz_bits(page_sz);
if (tlb_type == cheetah_plus || tlb_type == hypervisor) {
/* Physical mapping, no locked TLB entry for TSB. */
#endif /* !(__ASSEMBLY__) */
-/* Spitfire/Cheetah TTE bits. */
-#define _PAGE_VALID _AC(0x8000000000000000,UL) /* Valid TTE */
-#define _PAGE_R _AC(0x8000000000000000,UL) /* Keep ref bit up to date*/
-#define _PAGE_SZ4MB _AC(0x6000000000000000,UL) /* 4MB Page */
-#define _PAGE_SZ512K _AC(0x4000000000000000,UL) /* 512K Page */
-#define _PAGE_SZ64K _AC(0x2000000000000000,UL) /* 64K Page */
-#define _PAGE_SZ8K _AC(0x0000000000000000,UL) /* 8K Page */
-#define _PAGE_NFO _AC(0x1000000000000000,UL) /* No Fault Only */
-#define _PAGE_IE _AC(0x0800000000000000,UL) /* Invert Endianness */
-#define _PAGE_SOFT2 _AC(0x07FC000000000000,UL) /* Software bits, set 2 */
-#define _PAGE_RES1 _AC(0x0002000000000000,UL) /* Reserved */
-#define _PAGE_SZ32MB _AC(0x0001000000000000,UL) /* (Panther) 32MB page */
-#define _PAGE_SZ256MB _AC(0x2001000000000000,UL) /* (Panther) 256MB page */
-#define _PAGE_SN _AC(0x0000800000000000,UL) /* (Cheetah) Snoop */
-#define _PAGE_RES2 _AC(0x0000780000000000,UL) /* Reserved */
-#define _PAGE_PADDR_SF _AC(0x000001FFFFFFE000,UL) /* (Spitfire) paddr[40:13]*/
-#define _PAGE_PADDR _AC(0x000007FFFFFFE000,UL) /* (Cheetah) paddr[42:13] */
-#define _PAGE_SOFT _AC(0x0000000000001F80,UL) /* Software bits */
-#define _PAGE_L _AC(0x0000000000000040,UL) /* Locked TTE */
-#define _PAGE_CP _AC(0x0000000000000020,UL) /* Cacheable in P-Cache */
-#define _PAGE_CV _AC(0x0000000000000010,UL) /* Cacheable in V-Cache */
-#define _PAGE_E _AC(0x0000000000000008,UL) /* side-Effect */
-#define _PAGE_P _AC(0x0000000000000004,UL) /* Privileged Page */
-#define _PAGE_W _AC(0x0000000000000002,UL) /* Writable */
-#define _PAGE_G _AC(0x0000000000000001,UL) /* Global */
-
-#define _PAGE_ALL_SZ_BITS \
- (_PAGE_SZ4MB | _PAGE_SZ512K | _PAGE_SZ64K | \
- _PAGE_SZ8K | _PAGE_SZ32MB | _PAGE_SZ256MB)
-
-/* Here are the SpitFire software bits we use in the TTE's.
- *
- * WARNING: If you are going to try and start using some
- * of the soft2 bits, you will need to make
- * modifications to the swap entry implementation.
- * For example, one thing that could happen is that
- * swp_entry_to_pte() would BUG_ON() if you tried
- * to use one of the soft2 bits for _PAGE_FILE.
- *
- * Like other architectures, I have aliased _PAGE_FILE with
- * _PAGE_MODIFIED. This works because _PAGE_FILE is never
- * interpreted that way unless _PAGE_PRESENT is clear.
- */
-#define _PAGE_EXEC _AC(0x0000000000001000,UL) /* Executable SW bit */
-#define _PAGE_MODIFIED _AC(0x0000000000000800,UL) /* Modified (dirty) */
-#define _PAGE_FILE _AC(0x0000000000000800,UL) /* Pagecache page */
-#define _PAGE_ACCESSED _AC(0x0000000000000400,UL) /* Accessed (ref'd) */
-#define _PAGE_READ _AC(0x0000000000000200,UL) /* Readable SW Bit */
-#define _PAGE_WRITE _AC(0x0000000000000100,UL) /* Writable SW Bit */
-#define _PAGE_PRESENT _AC(0x0000000000000080,UL) /* Present */
-
-#if PAGE_SHIFT == 13
-#define _PAGE_SZBITS _PAGE_SZ8K
-#elif PAGE_SHIFT == 16
-#define _PAGE_SZBITS _PAGE_SZ64K
-#elif PAGE_SHIFT == 19
-#define _PAGE_SZBITS _PAGE_SZ512K
-#elif PAGE_SHIFT == 22
-#define _PAGE_SZBITS _PAGE_SZ4MB
-#else
-#error Wrong PAGE_SHIFT specified
-#endif
-
-#if defined(CONFIG_HUGETLB_PAGE_SIZE_4MB)
-#define _PAGE_SZHUGE _PAGE_SZ4MB
-#elif defined(CONFIG_HUGETLB_PAGE_SIZE_512K)
-#define _PAGE_SZHUGE _PAGE_SZ512K
-#elif defined(CONFIG_HUGETLB_PAGE_SIZE_64K)
-#define _PAGE_SZHUGE _PAGE_SZ64K
-#endif
-
-#define _PAGE_CACHE (_PAGE_CP | _PAGE_CV)
-
-#define __DIRTY_BITS (_PAGE_MODIFIED | _PAGE_WRITE | _PAGE_W)
-#define __ACCESS_BITS (_PAGE_ACCESSED | _PAGE_READ | _PAGE_R)
-#define __PRIV_BITS _PAGE_P
-
-#define PAGE_NONE __pgprot (_PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_CACHE)
-
-/* Don't set the TTE _PAGE_W bit here, else the dirty bit never gets set. */
-#define PAGE_SHARED __pgprot (_PAGE_PRESENT | _PAGE_VALID | _PAGE_CACHE | \
- __ACCESS_BITS | _PAGE_WRITE | _PAGE_EXEC)
-
-#define PAGE_COPY __pgprot (_PAGE_PRESENT | _PAGE_VALID | _PAGE_CACHE | \
- __ACCESS_BITS | _PAGE_EXEC)
-
-#define PAGE_READONLY __pgprot (_PAGE_PRESENT | _PAGE_VALID | _PAGE_CACHE | \
- __ACCESS_BITS | _PAGE_EXEC)
-
-#define PAGE_KERNEL __pgprot (_PAGE_PRESENT | _PAGE_VALID | _PAGE_CACHE | \
- __PRIV_BITS | \
- __ACCESS_BITS | __DIRTY_BITS | _PAGE_EXEC)
-
-#define PAGE_SHARED_NOEXEC __pgprot (_PAGE_PRESENT | _PAGE_VALID | \
- _PAGE_CACHE | \
- __ACCESS_BITS | _PAGE_WRITE)
-
-#define PAGE_COPY_NOEXEC __pgprot (_PAGE_PRESENT | _PAGE_VALID | \
- _PAGE_CACHE | __ACCESS_BITS)
-
-#define PAGE_READONLY_NOEXEC __pgprot (_PAGE_PRESENT | _PAGE_VALID | \
- _PAGE_CACHE | __ACCESS_BITS)
-
-#define _PFN_MASK _PAGE_PADDR
-
-#define pg_iobits (_PAGE_VALID | _PAGE_PRESENT | __DIRTY_BITS | \
- __ACCESS_BITS | _PAGE_E)
-
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY_NOEXEC
-#define __P010 PAGE_COPY_NOEXEC
-#define __P011 PAGE_COPY_NOEXEC
-#define __P100 PAGE_READONLY
-#define __P101 PAGE_READONLY
-#define __P110 PAGE_COPY
-#define __P111 PAGE_COPY
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY_NOEXEC
-#define __S010 PAGE_SHARED_NOEXEC
-#define __S011 PAGE_SHARED_NOEXEC
-#define __S100 PAGE_READONLY
-#define __S101 PAGE_READONLY
-#define __S110 PAGE_SHARED
-#define __S111 PAGE_SHARED
+/* PTE bits which are the same in SUN4U and SUN4V format. */
+#define _PAGE_VALID 0x8000000000000000 /* Valid TTE */
+#define _PAGE_R 0x8000000000000000 /* Keep ref bit up to date*/
+
+/* These are actually filled in at boot time by sun4{u,v}_pgprot_init() */
+#define __P000 __pgprot(0)
+#define __P001 __pgprot(0)
+#define __P010 __pgprot(0)
+#define __P011 __pgprot(0)
+#define __P100 __pgprot(0)
+#define __P101 __pgprot(0)
+#define __P110 __pgprot(0)
+#define __P111 __pgprot(0)
+
+#define __S000 __pgprot(0)
+#define __S001 __pgprot(0)
+#define __S010 __pgprot(0)
+#define __S011 __pgprot(0)
+#define __S100 __pgprot(0)
+#define __S101 __pgprot(0)
+#define __S110 __pgprot(0)
+#define __S111 __pgprot(0)
#ifndef __ASSEMBLY__
+extern pte_t mk_pte_io(unsigned long, pgprot_t, int, unsigned long);
+
+extern unsigned long pte_sz_bits(unsigned long size);
+
+extern pgprot_t PAGE_KERNEL;
+extern pgprot_t PAGE_KERNEL_LOCKED;
+extern pgprot_t PAGE_COPY;
+
+/* XXX This uglyness is for the atyfb driver's sparc mmap() support. XXX */
+extern unsigned long _PAGE_IE;
+extern unsigned long _PAGE_E;
+extern unsigned long _PAGE_CACHE;
+
+extern unsigned long pg_iobits;
+extern unsigned long _PAGE_ALL_SZ_BITS;
+extern unsigned long _PAGE_SZBITS;
+
extern unsigned long phys_base;
extern unsigned long pfn_base;
* the first physical page in the machine is at some huge physical address,
* such as 4GB. This is common on a partitioned E10000, for example.
*/
-
-#define pfn_pte(pfn, prot) \
- __pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot) | _PAGE_SZBITS)
+extern pte_t pfn_pte(unsigned long, pgprot_t);
#define mk_pte(page, pgprot) pfn_pte(page_to_pfn(page), (pgprot))
+extern unsigned long pte_pfn(pte_t);
+#define pte_page(x) pfn_to_page(pte_pfn(x))
+extern pte_t pte_modify(pte_t, pgprot_t);
-#define pte_pfn(x) ((pte_val(x) & _PAGE_PADDR)>>PAGE_SHIFT)
-#define pte_page(x) pfn_to_page(pte_pfn(x))
-
-static inline pte_t pte_modify(pte_t orig_pte, pgprot_t new_prot)
-{
- pte_t __pte;
- const unsigned long preserve_mask = (_PFN_MASK |
- _PAGE_MODIFIED | _PAGE_ACCESSED |
- _PAGE_CACHE | _PAGE_E |
- _PAGE_PRESENT | _PAGE_SZBITS);
-
- pte_val(__pte) = (pte_val(orig_pte) & preserve_mask) |
- (pgprot_val(new_prot) & ~preserve_mask);
-
- return __pte;
-}
#define pmd_set(pmdp, ptep) \
(pmd_val(*(pmdp)) = (__pa((unsigned long) (ptep)) >> 11UL))
#define pud_set(pudp, pmdp) \
#define pmd_page(pmd) virt_to_page((void *)__pmd_page(pmd))
#define pud_page(pud) \
((unsigned long) __va((((unsigned long)pud_val(pud))<<11UL)))
-#define pte_none(pte) (!pte_val(pte))
-#define pte_present(pte) (pte_val(pte) & _PAGE_PRESENT)
#define pmd_none(pmd) (!pmd_val(pmd))
#define pmd_bad(pmd) (0)
#define pmd_present(pmd) (pmd_val(pmd) != 0U)
#define pud_present(pud) (pud_val(pud) != 0U)
#define pud_clear(pudp) (pud_val(*(pudp)) = 0U)
+/* Same in both SUN4V and SUN4U. */
+#define pte_none(pte) (!pte_val(pte))
+
+extern unsigned long pte_present(pte_t);
+
/* The following only work if pte_present() is true.
* Undefined behaviour if not..
*/
-#define pte_read(pte) (pte_val(pte) & _PAGE_READ)
-#define pte_exec(pte) (pte_val(pte) & _PAGE_EXEC)
-#define pte_write(pte) (pte_val(pte) & _PAGE_WRITE)
-#define pte_dirty(pte) (pte_val(pte) & _PAGE_MODIFIED)
-#define pte_young(pte) (pte_val(pte) & _PAGE_ACCESSED)
-#define pte_wrprotect(pte) (__pte(pte_val(pte) & ~(_PAGE_WRITE|_PAGE_W)))
-#define pte_rdprotect(pte) \
- (__pte(((pte_val(pte)<<1UL)>>1UL) & ~_PAGE_READ))
-#define pte_mkclean(pte) \
- (__pte(pte_val(pte) & ~(_PAGE_MODIFIED|_PAGE_W)))
-#define pte_mkold(pte) \
- (__pte(((pte_val(pte)<<1UL)>>1UL) & ~_PAGE_ACCESSED))
-
-/* Permanent address of a page. */
-#define __page_address(page) page_address(page)
+extern unsigned long pte_read(pte_t);
+extern unsigned long pte_exec(pte_t);
+extern unsigned long pte_write(pte_t);
+extern unsigned long pte_dirty(pte_t);
+extern unsigned long pte_young(pte_t);
+extern pte_t pte_wrprotect(pte_t);
+extern pte_t pte_rdprotect(pte_t);
+extern pte_t pte_mkclean(pte_t);
+extern pte_t pte_mkold(pte_t);
/* Be very careful when you change these three, they are delicate. */
-#define pte_mkyoung(pte) (__pte(pte_val(pte) | _PAGE_ACCESSED | _PAGE_R))
-#define pte_mkwrite(pte) (__pte(pte_val(pte) | _PAGE_WRITE))
-#define pte_mkdirty(pte) (__pte(pte_val(pte) | _PAGE_MODIFIED | _PAGE_W))
-#define pte_mkhuge(pte) (__pte(pte_val(pte) | _PAGE_SZHUGE))
+extern pte_t pte_mkyoung(pte_t);
+extern pte_t pte_mkwrite(pte_t);
+extern pte_t pte_mkdirty(pte_t);
+extern pte_t pte_mkhuge(pte_t);
/* to find an entry in a page-table-directory. */
#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD - 1))
/* It is more efficient to let flush_tlb_kernel_range()
* handle init_mm tlb flushes.
+ *
+ * SUN4V NOTE: _PAGE_VALID is the same value in both the SUN4U
+ * and SUN4V pte layout, so this inline test is fine.
*/
if (likely(mm != &init_mm) && (pte_val(orig) & _PAGE_VALID))
tlb_batch_add(mm, addr, ptep, orig);
#define __swp_entry_to_pte(x) ((pte_t) { (x).val })
/* File offset in PTE support. */
-#define pte_file(pte) (pte_val(pte) & _PAGE_FILE)
+extern unsigned long pte_file(pte_t);
#define pte_to_pgoff(pte) (pte_val(pte) >> PAGE_SHIFT)
-#define pgoff_to_pte(off) (__pte(((off) << PAGE_SHIFT) | _PAGE_FILE))
+extern pte_t pgoff_to_pte(unsigned long);
#define PTE_FILE_MAX_BITS (64UL - PAGE_SHIFT - 1UL)
extern unsigned long prom_virt_to_phys(unsigned long, int *);
-static __inline__ unsigned long
-sun4u_get_pte (unsigned long addr)
-{
- pgd_t *pgdp;
- pud_t *pudp;
- pmd_t *pmdp;
- pte_t *ptep;
-
- if (addr >= PAGE_OFFSET)
- return addr & _PAGE_PADDR;
- if ((addr >= LOW_OBP_ADDRESS) && (addr < HI_OBP_ADDRESS))
- return prom_virt_to_phys(addr, NULL);
- pgdp = pgd_offset_k(addr);
- pudp = pud_offset(pgdp, addr);
- pmdp = pmd_offset(pudp, addr);
- ptep = pte_offset_kernel(pmdp, addr);
- return pte_val(*ptep) & _PAGE_PADDR;
-}
+extern unsigned long sun4u_get_pte(unsigned long);
-static __inline__ unsigned long
-__get_phys (unsigned long addr)
+static inline unsigned long __get_phys(unsigned long addr)
{
- return sun4u_get_pte (addr);
+ return sun4u_get_pte(addr);
}
-static __inline__ int
-__get_iospace (unsigned long addr)
+static inline int __get_iospace(unsigned long addr)
{
- return ((sun4u_get_pte (addr) & 0xf0000000) >> 28);
+ return ((sun4u_get_pte(addr) & 0xf0000000) >> 28);
}
extern unsigned long *sparc64_valid_addr_bitmap;
unsigned long size, pgprot_t prot);
/* Clear virtual and physical cachability, set side-effect bit. */
-#define pgprot_noncached(prot) \
- (__pgprot((pgprot_val(prot) & ~(_PAGE_CP | _PAGE_CV)) | \
- _PAGE_E))
+extern pgprot_t pgprot_noncached(pgprot_t);
/*
* For sparc32&64, the pfn in io_remap_pfn_range() carries <iospace> in
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