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[ARM] 3971/1: xsc3: get rid of L_PTE_COHERENT 

Merge L_PTE_COHERENT with L_PTE_SHARED and free up a L_PTE_* bit.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Lennert Buytenhek 2006-12-02 00:03:47 +01:00 committed by Russell King
parent e520a36de2
commit 0e5fdca762
3 changed files with 5 additions and 4 deletions
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2
arch/arm/mm/mmu.c
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@ -265,7 +265,7 @@ static void __init build_mem_type_table(void)
if (arch_is_coherent()) {
if (cpu_is_xsc3()) {
mem_types[MT_MEMORY].prot_sect |= PMD_SECT_S;
mem_types[MT_MEMORY].prot_pte |= L_PTE_COHERENT;
mem_types[MT_MEMORY].prot_pte |= L_PTE_SHARED;
}
}

4
arch/arm/mm/proc-xsc3.S
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@ -371,8 +371,10 @@ ENTRY(cpu_xsc3_switch_mm)
ENTRY(cpu_xsc3_set_pte)
str r1, [r0], #-2048 @ linux version
bic r2, r1, #0xdf0 @ Keep C, B, coherency bits
bic r2, r1, #0xff0 @ Keep C, B bits
orr r2, r2, #PTE_TYPE_EXT @ extended page
tst r1, #L_PTE_SHARED @ Shared?
orrne r2, r2, #0x200
eor r3, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_WRITE | L_PTE_DIRTY

3
include/asm-arm/pgtable.h
View File

@ -169,8 +169,7 @@ extern void __pgd_error(const char *file, int line, unsigned long val);
#define L_PTE_WRITE (1 << 5)
#define L_PTE_EXEC (1 << 6)
#define L_PTE_DIRTY (1 << 7)
#define L_PTE_COHERENT (1 << 9) /* I/O coherent (xsc3) */
#define L_PTE_SHARED (1 << 10) /* shared between CPUs (v6) */
#define L_PTE_SHARED (1 << 10) /* shared(v6), coherent(xsc3) */
#define L_PTE_ASID (1 << 11) /* non-global (use ASID, v6) */
#ifndef __ASSEMBLY__