redonkable/remarkable-linux
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[SPARC64]: Kill kvaddr_to_phys() and friends.

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Just inline it into flush_icache_range() which is the only
user.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2007-03-15 15:50:11 -07:00
parent 4be5c34dc4
commit a94aa25306
1 changed files with 28 additions and 63 deletions
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91
arch/sparc64/mm/init.c
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@ -392,75 +392,30 @@ out:
put_cpu();
}
struct linux_prom_translation {
unsigned long virt;
unsigned long size;
unsigned long data;
};
/* Exported for kernel TLB miss handling in ktlb.S */
struct linux_prom_translation prom_trans[512] __read_mostly;
unsigned int prom_trans_ents __read_mostly;
/*
* Translate PROM's mapping we capture at boot time into physical address.
* The second parameter is only set from prom_callback() invocations.
*/
static unsigned long prom_virt_to_phys(unsigned long promva)
{
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;
return base + (promva & (8192 - 1));
}
}
return 0UL;
}
static unsigned long kvaddr_to_phys(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);
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;
}
void __kprobes flush_icache_range(unsigned long start, unsigned long end)
{
/* Cheetah and Hypervisor platform cpus have coherent I-cache. */
if (tlb_type == spitfire) {
unsigned long kaddr;
for (kaddr = start; kaddr < end; kaddr += PAGE_SIZE)
__flush_icache_page(kvaddr_to_phys(kaddr));
/* This code only runs on Spitfire cpus so this is
* why we can assume _PAGE_PADDR_4U.
*/
for (kaddr = start; kaddr < end; kaddr += PAGE_SIZE) {
unsigned long paddr, mask = _PAGE_PADDR_4U;
if (kaddr >= PAGE_OFFSET)
paddr = kaddr & mask;
else {
pgd_t *pgdp = pgd_offset_k(kaddr);
pud_t *pudp = pud_offset(pgdp, kaddr);
pmd_t *pmdp = pmd_offset(pudp, kaddr);
pte_t *ptep = pte_offset_kernel(pmdp, kaddr);
paddr = pte_val(*ptep) & mask;
}
__flush_icache_page(paddr);
}
}
}
@ -497,6 +452,16 @@ void mmu_info(struct seq_file *m)
#endif /* CONFIG_DEBUG_DCFLUSH */
}
struct linux_prom_translation {
unsigned long virt;
unsigned long size;
unsigned long data;
};
/* Exported for kernel TLB miss handling in ktlb.S */
struct linux_prom_translation prom_trans[512] __read_mostly;
unsigned int prom_trans_ents __read_mostly;
/* Exported for SMP bootup purposes. */
unsigned long kern_locked_tte_data;