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iommu/tegra-smmu: Move flush_dcache to tegra-smmu.c

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Drivers should not be using __cpuc_* functions nor outer_cache_flush()
directly.  This change partly cleans up tegra-smmu.c.

The only difference between cache handling of the tegra variants is
Denver, which omits the call to outer_cache_flush().  This is due to
Denver being an ARM64 CPU, and the ARM64 architecture does not provide
this function.  (This, in itself, is a good reason why these should not
be used.)

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
[treding@nvidia.com: fix build failure on 64-bit ARM]
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Russell King
2015-07-27 13:29:36 +01:00
committed by Thierry Reding
parent 32924c76b0
commit 4b3c7d1076
5 changed files with 25 additions and 76 deletions
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17
drivers/memory/tegra/tegra114.c
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@@ -9,8 +9,6 @@
#include <linux/of.h>
#include <linux/mm.h>
#include <asm/cacheflush.h>
#include <dt-bindings/memory/tegra114-mc.h>
#include "mc.h"
@@ -914,20 +912,6 @@ static const struct tegra_smmu_swgroup tegra114_swgroups[] = {
{ .name = "tsec", .swgroup = TEGRA_SWGROUP_TSEC, .reg = 0x294 },
};
static void tegra114_flush_dcache(struct page *page, unsigned long offset,
size_t size)
{
phys_addr_t phys = page_to_phys(page) + offset;
void *virt = page_address(page) + offset;
__cpuc_flush_dcache_area(virt, size);
outer_flush_range(phys, phys + size);
}
static const struct tegra_smmu_ops tegra114_smmu_ops = {
.flush_dcache = tegra114_flush_dcache,
};
static const struct tegra_smmu_soc tegra114_smmu_soc = {
.clients = tegra114_mc_clients,
.num_clients = ARRAY_SIZE(tegra114_mc_clients),
@@ -936,7 +920,6 @@ static const struct tegra_smmu_soc tegra114_smmu_soc = {
.supports_round_robin_arbitration = false,
.supports_request_limit = false,
.num_asids = 4,
.ops = &tegra114_smmu_ops,
};
const struct tegra_mc_soc tegra114_mc_soc = {