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sparc32: srmmu_probe now knows about leon too

Telusuri Sumber 
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Daniel Hellstrom <daniel@gaisler.com>
Cc: Konrad Eisele <konrad@gaisler.com>
This commit is contained in:
Sam Ravnborg
2012-05-25 21:20:19 +00:00
committed by David S. Miller
orang tua b0acd2495e
melakukan 805918f80f
4 mengubah file dengan 23 tambahan dan 23 penghapusan
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2
arch/sparc/mm/leon_mm.c
Melihat File

@@ -32,7 +32,7 @@ static inline unsigned long leon_get_ctable_ptr(void)
}
unsigned long srmmu_swprobe(unsigned long vaddr, unsigned long *paddr)
unsigned long leon_swprobe(unsigned long vaddr, unsigned long *paddr)
{
unsigned int ctxtbl;

25
arch/sparc/mm/srmmu.c
Melihat File

@@ -646,6 +646,23 @@ static void __init srmmu_allocate_ptable_skeleton(unsigned long start,
}
}
/* These flush types are not available on all chips... */
static inline unsigned long srmmu_probe(unsigned long vaddr)
{
unsigned long retval;
if (sparc_cpu_model != sparc_leon) {
vaddr &= PAGE_MASK;
__asm__ __volatile__("lda [%1] %2, %0\n\t" :
"=r" (retval) :
"r" (vaddr | 0x400), "i" (ASI_M_FLUSH_PROBE));
} else {
retval = leon_swprobe(vaddr, 0);
}
return retval;
}
/*
* This is much cleaner than poking around physical address space
* looking at the prom's page table directly which is what most
@@ -665,7 +682,7 @@ static void __init srmmu_inherit_prom_mappings(unsigned long start,
break; /* probably wrap around */
if(start == 0xfef00000)
start = KADB_DEBUGGER_BEGVM;
if(!(prompte = srmmu_hwprobe(start))) {
if(!(prompte = srmmu_probe(start))) {
start += PAGE_SIZE;
continue;
}
@@ -674,12 +691,12 @@ static void __init srmmu_inherit_prom_mappings(unsigned long start,
what = 0;
if(!(start & ~(SRMMU_REAL_PMD_MASK))) {
if(srmmu_hwprobe((start-PAGE_SIZE) + SRMMU_REAL_PMD_SIZE) == prompte)
if(srmmu_probe((start-PAGE_SIZE) + SRMMU_REAL_PMD_SIZE) == prompte)
what = 1;
}
if(!(start & ~(SRMMU_PGDIR_MASK))) {
if(srmmu_hwprobe((start-PAGE_SIZE) + SRMMU_PGDIR_SIZE) ==
if(srmmu_probe((start-PAGE_SIZE) + SRMMU_PGDIR_SIZE) ==
prompte)
what = 2;
}
@@ -1156,7 +1173,7 @@ static void turbosparc_flush_page_to_ram(unsigned long page)
#ifdef TURBOSPARC_WRITEBACK
volatile unsigned long clear;
if (srmmu_hwprobe(page))
if (srmmu_probe(page))
turbosparc_flush_page_cache(page);
clear = srmmu_get_fstatus();
#endif