iommu/ipmmu-vmsa: Add support for R-Car Gen4

Add support for R-Car Gen4 like r8a779f0 (R-Car S4-8). The IPMMU
hardware design of r8a779f0 is the same as r8a779a0. So, rename
"r8a779a0" to "rcar_gen4".

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20220208002030.1319984-3-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c
index 61bd9a3..4c3217b 100644 (file)
--- a/drivers/iommu/ipmmu-vmsa.c
+++ b/drivers/iommu/ipmmu-vmsa.c
@@ -719,6 +719,7 @@ static int ipmmu_init_platform_device(struct device *dev,
 
 static const struct soc_device_attribute soc_needs_opt_in[] = {
        { .family = "R-Car Gen3", },
+       { .family = "R-Car Gen4", },
        { .family = "RZ/G2", },
        { /* sentinel */ }
 };
@@ -743,7 +744,7 @@ static bool ipmmu_device_is_allowed(struct device *dev)
        unsigned int i;
 
        /*
-        * R-Car Gen3 and RZ/G2 use the allow list to opt-in devices.
+        * R-Car Gen3/4 and RZ/G2 use the allow list to opt-in devices.
         * For Other SoCs, this returns true anyway.
         */
        if (!soc_device_match(soc_needs_opt_in))
@@ -926,7 +927,7 @@ static const struct ipmmu_features ipmmu_features_rcar_gen3 = {
        .utlb_offset_base = 0,
 };
 
-static const struct ipmmu_features ipmmu_features_r8a779a0 = {
+static const struct ipmmu_features ipmmu_features_rcar_gen4 = {
        .use_ns_alias_offset = false,
        .has_cache_leaf_nodes = true,
        .number_of_contexts = 16,
@@ -982,7 +983,10 @@ static const struct of_device_id ipmmu_of_ids[] = {
                .data = &ipmmu_features_rcar_gen3,
        }, {
                .compatible = "renesas,ipmmu-r8a779a0",
-               .data = &ipmmu_features_r8a779a0,
+               .data = &ipmmu_features_rcar_gen4,
+       }, {
+               .compatible = "renesas,rcar-gen4-ipmmu",
+               .data = &ipmmu_features_rcar_gen4,
        }, {
                /* Terminator */
        },