diff mbox

[dpdk-dev,v6,03/12] eal/pci: get iommu class

Message ID 20170814161059.6684-4-santosh.shukla@caviumnetworks.com (mailing list archive)
State Superseded, archived
Headers

Checks

Context Check Description
ci/checkpatch success coding style OK
ci/Intel-compilation success Compilation OK

Commit Message

Santosh Shukla Aug. 14, 2017, 4:10 p.m. UTC 
  Introducing rte_pci_get_iommu_class API which helps to get iommu class
of PCI device on the bus and returns preferred iova mapping mode for
PCI bus.

Signed-off-by: Santosh Shukla <santosh.shukla@caviumnetworks.com>
Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---
 lib/librte_eal/common/include/rte_bus.h | 10 ++++++++++
 lib/librte_eal/common/include/rte_pci.h | 11 +++++++++++
 2 files changed, 21 insertions(+)

Comments

Aaron Conole Aug. 17, 2017, 12:38 p.m. UTC | #1 
Santosh Shukla <santosh.shukla@caviumnetworks.com> writes:

> Introducing rte_pci_get_iommu_class API which helps to get iommu class
> of PCI device on the bus and returns preferred iova mapping mode for
> PCI bus.
>
> Signed-off-by: Santosh Shukla <santosh.shukla@caviumnetworks.com>
> Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
> Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
> ---

I think 3/12 and 4/12 should be combined with 5/12.  At the very least,
3/12 and 4/12 should be combined.
diff mbox

Patch

diff --git a/lib/librte_eal/common/include/rte_bus.h b/lib/librte_eal/common/include/rte_bus.h
index c79368d3c..9e40687e5 100644
--- a/lib/librte_eal/common/include/rte_bus.h
+++ b/lib/librte_eal/common/include/rte_bus.h
@@ -55,6 +55,16 @@  extern "C" {
 /** Double linked list of buses */
 TAILQ_HEAD(rte_bus_list, rte_bus);
 
+
+/**
+ * IOVA mapping mode.
+ */
+enum rte_iova_mode {
+	RTE_IOVA_DC = 0,	/* Don't care mode */
+	RTE_IOVA_PA = (1 << 0),
+	RTE_IOVA_VA = (1 << 1)
+};
+
 /**
  * Bus specific scan for devices attached on the bus.
  * For each bus object, the scan would be responsible for finding devices and
diff --git a/lib/librte_eal/common/include/rte_pci.h b/lib/librte_eal/common/include/rte_pci.h
index 47f0532e4..a67d77f22 100644
--- a/lib/librte_eal/common/include/rte_pci.h
+++ b/lib/librte_eal/common/include/rte_pci.h
@@ -383,6 +383,17 @@  int
 rte_pci_match(const struct rte_pci_driver *pci_drv,
 	      const struct rte_pci_device *pci_dev);
 
+
+/**
+ * Get iommu class of PCI devices on the bus.
+ * And return their preferred iova mapping mode.
+ *
+ * @return
+ *   - enum rte_iova_mode.
+ */
+enum rte_iova_mode
+rte_pci_get_iommu_class(void);
+
 /**
  * Map the PCI device resources in user space virtual memory address
  *