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authorYoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>2021-01-28 16:02:59 +0300
committerJoerg Roedel <jroedel@suse.de>2021-01-29 11:27:14 +0300
commit815cdd86038b809ef9fc3d42aed1f248414df3ce (patch)
treedbe9de78a9aabe56c7cb077195b89a44438ddef2 /drivers/iommu/ipmmu-vmsa.c
parent6ee1d745b7c9fd573fba142a2efdad76a9f1cb04 (diff)
downloadlinux-815cdd86038b809ef9fc3d42aed1f248414df3ce.tar.xz
iommu/ipmmu-vmsa: Refactor ipmmu_of_xlate()
Refactor ipmmu_of_xlate() to improve readability/scalability. Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Link: https://lore.kernel.org/r/1611838980-4940-2-git-send-email-yoshihiro.shimoda.uh@renesas.com Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/ipmmu-vmsa.c')
-rw-r--r--drivers/iommu/ipmmu-vmsa.c49
1 files changed, 18 insertions, 31 deletions
diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c
index d71f10257f15..96aee98889be 100644
--- a/drivers/iommu/ipmmu-vmsa.c
+++ b/drivers/iommu/ipmmu-vmsa.c
@@ -734,54 +734,41 @@ static int ipmmu_init_platform_device(struct device *dev,
return 0;
}
-static const struct soc_device_attribute soc_rcar_gen3[] = {
- { .soc_id = "r8a774a1", },
- { .soc_id = "r8a774b1", },
- { .soc_id = "r8a774c0", },
- { .soc_id = "r8a774e1", },
- { .soc_id = "r8a7795", },
- { .soc_id = "r8a77961", },
- { .soc_id = "r8a7796", },
- { .soc_id = "r8a77965", },
- { .soc_id = "r8a77970", },
- { .soc_id = "r8a77990", },
- { .soc_id = "r8a77995", },
+static const struct soc_device_attribute soc_needs_opt_in[] = {
+ { .family = "R-Car Gen3", },
+ { .family = "RZ/G2", },
{ /* sentinel */ }
};
-static const struct soc_device_attribute soc_rcar_gen3_whitelist[] = {
- { .soc_id = "r8a774b1", },
- { .soc_id = "r8a774c0", },
- { .soc_id = "r8a774e1", },
- { .soc_id = "r8a7795", .revision = "ES3.*" },
- { .soc_id = "r8a77961", },
- { .soc_id = "r8a77965", },
- { .soc_id = "r8a77990", },
- { .soc_id = "r8a77995", },
+static const struct soc_device_attribute soc_denylist[] = {
+ { .soc_id = "r8a774a1", },
+ { .soc_id = "r8a7795", .revision = "ES1.*" },
+ { .soc_id = "r8a7795", .revision = "ES2.*" },
+ { .soc_id = "r8a7796", },
{ /* sentinel */ }
};
-static const char * const rcar_gen3_slave_whitelist[] = {
+static const char * const devices_allowlist[] = {
};
-static bool ipmmu_slave_whitelist(struct device *dev)
+static bool ipmmu_device_is_allowed(struct device *dev)
{
unsigned int i;
/*
- * For R-Car Gen3 use a white list to opt-in slave devices.
+ * R-Car Gen3 and RZ/G2 use the allow list to opt-in devices.
* For Other SoCs, this returns true anyway.
*/
- if (!soc_device_match(soc_rcar_gen3))
+ if (!soc_device_match(soc_needs_opt_in))
return true;
- /* Check whether this R-Car Gen3 can use the IPMMU correctly or not */
- if (!soc_device_match(soc_rcar_gen3_whitelist))
+ /* Check whether this SoC can use the IPMMU correctly or not */
+ if (soc_device_match(soc_denylist))
return false;
- /* Check whether this slave device can work with the IPMMU */
- for (i = 0; i < ARRAY_SIZE(rcar_gen3_slave_whitelist); i++) {
- if (!strcmp(dev_name(dev), rcar_gen3_slave_whitelist[i]))
+ /* Check whether this device can work with the IPMMU */
+ for (i = 0; i < ARRAY_SIZE(devices_allowlist); i++) {
+ if (!strcmp(dev_name(dev), devices_allowlist[i]))
return true;
}
@@ -792,7 +779,7 @@ static bool ipmmu_slave_whitelist(struct device *dev)
static int ipmmu_of_xlate(struct device *dev,
struct of_phandle_args *spec)
{
- if (!ipmmu_slave_whitelist(dev))
+ if (!ipmmu_device_is_allowed(dev))
return -ENODEV;
iommu_fwspec_add_ids(dev, spec->args, 1);