void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
{
int cpu = smp_processor_id();
unsigned long flags;
int oldpid, newpid;
signed long idx;
if (!cpu_context(cpu, vma->vm_mm))
return;
newpid = cpu_asid(cpu, vma->vm_mm);
page &= PAGE_MASK;
local_irq_save(flags);
oldpid = read_c0_entryhi();
write_c0_vaddr(page);
write_c0_entryhi(newpid);
tlb_probe();
idx = read_c0_tlbset();
if (idx < 0)
goto finish;
write_c0_entrylo(0);
write_c0_entryhi(CKSEG0 + (idx << (PAGE_SHIFT + 1)));
tlb_write();
finish:
write_c0_entryhi(oldpid);
local_irq_restore(flags);
}
void local_flush_tlb_range(struct mm_struct *mm, unsigned long start,
unsigned long end)
{
int cpu = smp_processor_id();
if (cpu_context(cpu, mm) != 0) {
unsigned long flags;
int size;
#ifdef DEBUG_TLB
printk("[tlbrange<%lu,0x%08lx,0x%08lx>]",
cpu_asid(cpu, mm), start, end);
#endif
local_irq_save(flags);
size = (end - start + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
if (size <= current_cpu_data.tlbsize) {
int oldpid = read_c0_entryhi() & ASID_MASK;
int newpid = cpu_asid(cpu, mm);
start &= PAGE_MASK;
end += PAGE_SIZE - 1;
end &= PAGE_MASK;
while (start < end) {
int idx;
write_c0_entryhi(start | newpid);
start += PAGE_SIZE; /* BARRIER */
tlb_probe();
idx = read_c0_index();
write_c0_entrylo0(0);
write_c0_entryhi(KSEG0);
if (idx < 0) /* BARRIER */
continue;
tlb_write_indexed();
}
write_c0_entryhi(oldpid);
} else {
drop_mmu_context(mm, cpu);
}
local_irq_restore(flags);
}
void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
unsigned long end)
{
struct mm_struct *mm = vma->vm_mm;
int cpu = smp_processor_id();
if (cpu_context(cpu, mm) != 0) {
unsigned long size, flags;
unsigned long config6_flags;
ENTER_CRITICAL(flags);
disable_pgwalker(config6_flags);
size = (end - start + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
size = (size + 1) >> 1;
if (size <= current_cpu_data.tlbsize/2) {
int oldpid = read_c0_entryhi();
int newpid = cpu_asid(cpu, mm);
start &= (PAGE_MASK << 1);
end += ((PAGE_SIZE << 1) - 1);
end &= (PAGE_MASK << 1);
while (start < end) {
int idx;
write_c0_entryhi(start | newpid);
start += (PAGE_SIZE << 1);
mtc0_tlbw_hazard();
tlb_probe();
tlb_probe_hazard();
idx = read_c0_index();
write_c0_entrylo0(0);
write_c0_entrylo1(0);
if (idx < 0)
continue;
/* Make sure all entries differ. */
#ifndef CONFIG_NLM_VMIPS
write_c0_entryhi(UNIQUE_ENTRYHI(idx));
#else
__write_64bit_c0_register($10, 0, (UNIQUE_VMIPS_ENTRYHI(idx)));
#endif
mtc0_tlbw_hazard();
tlb_write_indexed();
}
tlbw_use_hazard();
write_c0_entryhi(oldpid);
} else {
drop_mmu_context(mm, cpu);
}
FLUSH_ITLB;
enable_pgwalker(config6_flags);
EXIT_CRITICAL(flags);
}
void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
unsigned long end)
{
struct mm_struct *mm = vma->vm_mm;
int cpu = smp_processor_id();
unsigned long flags;
int oldpid, newpid, size;
if (!cpu_context(cpu, mm))
return;
size = (end - start + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
size = (size + 1) >> 1;
local_irq_save(flags);
if (size > TFP_TLB_SIZE / 2) {
drop_mmu_context(mm, cpu);
goto out_restore;
}
oldpid = read_c0_entryhi();
newpid = cpu_asid(cpu, mm);
write_c0_entrylo(0);
start &= PAGE_MASK;
end += (PAGE_SIZE - 1);
end &= PAGE_MASK;
while (start < end) {
signed long idx;
write_c0_vaddr(start);
write_c0_entryhi(start);
start += PAGE_SIZE;
tlb_probe();
idx = read_c0_tlbset();
if (idx < 0)
continue;
write_c0_entryhi(CKSEG0 + (idx << (PAGE_SHIFT + 1)));
tlb_write();
}
write_c0_entryhi(oldpid);
out_restore:
local_irq_restore(flags);
}
void local_flush_tlb_range(struct mm_struct *mm, unsigned long start,
unsigned long end)
{
int cpu = smp_processor_id();
if (cpu_context(cpu, mm) != 0) {
unsigned long flags;
int size;
#ifdef DEBUG_TLB
printk("[tlbrange<%02x,%08lx,%08lx>]", (mm->context & ASID_MASK),
start, end);
#endif
local_irq_save(flags);
size = (end - start + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
size = (size + 1) >> 1;
if(size <= current_cpu_data.tlbsize/2) {
int oldpid = read_c0_entryhi() & ASID_MASK;
int newpid = cpu_asid(cpu, mm);
start &= (PAGE_MASK << 1);
end += ((PAGE_SIZE << 1) - 1);
end &= (PAGE_MASK << 1);
while(start < end) {
int idx;
write_c0_entryhi(start | newpid);
start += (PAGE_SIZE << 1);
BARRIER;
tlb_probe();
BARRIER;
idx = read_c0_index();
write_c0_entrylo0(0);
write_c0_entrylo1(0);
if(idx < 0)
continue;
/* Make sure all entries differ. */
write_c0_entryhi(XKPHYS+idx*0x2000);
BARRIER;
tlb_write_indexed();
BARRIER;
}
write_c0_entryhi(oldpid);
} else {
drop_mmu_context(mm, cpu);
}
local_irq_restore(flags);
}
void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
unsigned long end)
{
struct mm_struct *mm = vma->vm_mm;
int cpu = smp_processor_id();
if (cpu_context(cpu, mm) != 0) {
unsigned long size, flags;
local_irq_save(flags);
start = round_down(start, PAGE_SIZE << 1);
end = round_up(end, PAGE_SIZE << 1);
size = (end - start) >> (PAGE_SHIFT + 1);
if (size <= (current_cpu_data.tlbsizeftlbsets ?
current_cpu_data.tlbsize / 8 :
current_cpu_data.tlbsize / 2)) {
int oldpid = read_c0_entryhi();
int newpid = cpu_asid(cpu, mm);
htw_stop();
while (start < end) {
int idx;
write_c0_entryhi(start | newpid);
start += (PAGE_SIZE << 1);
mtc0_tlbw_hazard();
tlb_probe();
tlb_probe_hazard();
idx = read_c0_index();
write_c0_entrylo0(0);
write_c0_entrylo1(0);
if (idx < 0)
continue;
/* Make sure all entries differ. */
write_c0_entryhi(UNIQUE_ENTRYHI(idx));
mtc0_tlbw_hazard();
tlb_write_indexed();
}
tlbw_use_hazard();
write_c0_entryhi(oldpid);
htw_start();
} else {
drop_mmu_context(mm, cpu);
}
flush_micro_tlb();
local_irq_restore(flags);
}
void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
unsigned long end)
{
struct mm_struct *mm = vma->vm_mm;
int cpu = smp_processor_id();
if (cpu_context(cpu, mm) != 0) {
unsigned long flags;
int size;
ENTER_CRITICAL(flags);
size = (end - start + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
size = (size + 1) >> 1;
local_irq_save(flags);
if (size <= current_cpu_data.tlbsize/2) {
int oldpid = read_c0_entryhi();
int newpid = cpu_asid(cpu, mm);
start &= (PAGE_MASK << 1);
end += ((PAGE_SIZE << 1) - 1);
end &= (PAGE_MASK << 1);
while (start < end) {
int idx;
write_c0_entryhi(start | newpid);
start += (PAGE_SIZE << 1);
mtc0_tlbw_hazard();
tlb_probe();
tlb_probe_hazard();
idx = read_c0_index();
write_c0_entrylo0(0);
write_c0_entrylo1(0);
if (idx < 0)
continue;
/* Make sure all entries differ. */
write_c0_entryhi(UNIQUE_ENTRYHI(idx));
mtc0_tlbw_hazard();
tlb_write_indexed();
}
tlbw_use_hazard();
write_c0_entryhi(oldpid);
} else {
drop_mmu_context(mm, cpu);
}
EXIT_CRITICAL(flags);
}
void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
{
unsigned int cpu = smp_processor_id();
if (vma->vm_mm && cpu_context(cpu, vma->vm_mm) != NO_CONTEXT) {
unsigned long flags;
unsigned long asid;
unsigned long saved_asid = MMU_NO_ASID;
asid = cpu_asid(cpu, vma->vm_mm);
page &= PAGE_MASK;
local_irq_save(flags);
if (vma->vm_mm != current->mm) {
saved_asid = get_asid();
set_asid(asid);
}
local_flush_tlb_one(asid, page);
if (saved_asid != MMU_NO_ASID)
set_asid(saved_asid);
local_irq_restore(flags);
}
}
void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
unsigned long end)
{
struct mm_struct *mm = vma->vm_mm;
unsigned int cpu = smp_processor_id();
if (cpu_context(cpu, mm) != NO_CONTEXT) {
unsigned long flags;
int size;
local_irq_save(flags);
size = (end - start + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
if (size > (MMU_NTLB_ENTRIES/4)) { /* Too many TLB to flush */
cpu_context(cpu, mm) = NO_CONTEXT;
if (mm == current->mm)
activate_context(mm, cpu);
} else {
unsigned long asid;
unsigned long saved_asid = MMU_NO_ASID;
asid = cpu_asid(cpu, mm);
start &= PAGE_MASK;
end += (PAGE_SIZE - 1);
end &= PAGE_MASK;
if (mm != current->mm) {
saved_asid = get_asid();
set_asid(asid);
}
while (start < end) {
local_flush_tlb_one(asid, start);
start += PAGE_SIZE;
}
if (saved_asid != MMU_NO_ASID)
set_asid(saved_asid);
}
local_irq_restore(flags);
}
