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authorLorenzo Pieralisi <lorenzo.pieralisi@arm.com>2016-11-21 13:01:45 +0300
committerWill Deacon <will.deacon@arm.com>2016-11-29 18:57:47 +0300
commitd6fcd3b149f3eab3b94cc107ca846bea8461cc2f (patch)
treee7638133b3a56ed9056de52799101177d827f26a /include/linux/acpi_iort.h
parentbbb8a1848f351a4e4962280df586f1e88757a7df (diff)
downloadlinux-d6fcd3b149f3eab3b94cc107ca846bea8461cc2f.tar.xz
iommu/arm-smmu: Add IORT configuration
In ACPI based systems, in order to be able to create platform devices and initialize them for ARM SMMU components, the IORT kernel implementation requires a set of static functions to be used by the IORT kernel layer to configure platform devices for ARM SMMU components. Add static configuration functions to the IORT kernel layer for the ARM SMMU components, so that the ARM SMMU driver can initialize its respective platform device by relying on the IORT kernel infrastructure and by adding a corresponding ACPI device early probe section entry. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Tomasz Nowicki <tn@semihalf.com> Tested-by: Hanjun Guo <hanjun.guo@linaro.org> Tested-by: Tomasz Nowicki <tn@semihalf.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Robin Murphy <robin.murphy@arm.com> Cc: Joerg Roedel <joro@8bytes.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'include/linux/acpi_iort.h')
-rw-r--r--include/linux/acpi_iort.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/acpi_iort.h b/include/linux/acpi_iort.h
index 17bb078073de..79ba1bb50950 100644
--- a/include/linux/acpi_iort.h
+++ b/include/linux/acpi_iort.h
@@ -23,6 +23,9 @@
#include <linux/fwnode.h>
#include <linux/irqdomain.h>
+#define IORT_IRQ_MASK(irq) (irq & 0xffffffffULL)
+#define IORT_IRQ_TRIGGER_MASK(irq) ((irq >> 32) & 0xffffffffULL)
+
int iort_register_domain_token(int trans_id, struct fwnode_handle *fw_node);
void iort_deregister_domain_token(int trans_id);
struct fwnode_handle *iort_find_domain_token(int trans_id);