diff options
| -rw-r--r-- | drivers/acpi/arm64/iort.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c index da225710b009..a8ebda9f7e97 100644 --- a/drivers/acpi/arm64/iort.c +++ b/drivers/acpi/arm64/iort.c @@ -833,6 +833,18 @@ static int __init arm_smmu_v3_count_resources(struct acpi_iort_node *node) return num_res; } +static unsigned long arm_smmu_v3_resource_size(struct acpi_iort_smmu_v3 *smmu) +{ + /* + * Override the size, for Cavium ThunderX2 implementation + * which doesn't support the page 1 SMMU register space. + */ + if (smmu->model == ACPI_IORT_SMMU_V3_CAVIUM_CN99XX) + return SZ_64K; + + return SZ_128K; +} + static void __init arm_smmu_v3_init_resources(struct resource *res, struct acpi_iort_node *node) { @@ -843,7 +855,8 @@ static void __init arm_smmu_v3_init_resources(struct resource *res, smmu = (struct acpi_iort_smmu_v3 *)node->node_data; res[num_res].start = smmu->base_address; - res[num_res].end = smmu->base_address + SZ_128K - 1; + res[num_res].end = smmu->base_address + + arm_smmu_v3_resource_size(smmu) - 1; res[num_res].flags = IORESOURCE_MEM; num_res++; |