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irqchip: gicv3-its: Use 64KB page as default granule

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The field of page size in register GITS_BASERn might be read-only
if an implementation only supports a single, fixed page size. But
currently the ITS driver will throw out an error when PAGE_SIZE
is less than the minimum size supported by an ITS. So addressing
this problem by using 64KB pages as default granule for all the
ITS base tables.

Acked-by: Marc Zyngier <[email protected]>
[maz: fixed bug breaking non Device Table allocations]
Signed-off-by: Yun Wu <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Jason Cooper <[email protected]>
This commit is contained in:
Yun Wu 2015-03-06 16:37:47 +00:00 • committed by Jason Cooper
commit 790b57aed1
1 changed files with 2 additions and 2 deletions
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4
drivers/irqchip/irq-gic-v3-its.c
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@ -800,14 +800,14 @@ static int its_alloc_tables(struct its_node *its)
{
int err;
int i;
int psz = PAGE_SIZE;
int psz = SZ_64K;
u64 shr = GITS_BASER_InnerShareable;
for (i = 0; i < GITS_BASER_NR_REGS; i++) {
u64 val = readq_relaxed(its->base + GITS_BASER + i * 8);
u64 type = GITS_BASER_TYPE(val);
u64 entry_size = GITS_BASER_ENTRY_SIZE(val);
int order = 0;
int order = get_order(psz);
int alloc_size;
u64 tmp;
void *base;