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
that bus.
Bsdapp case returns default iova mode.
Signed-off-by: Santosh Shukla <santosh.shu...@caviumnetworks.com>
Signed-off-by: Jerin Jacob <jerin.ja...@caviumnetworks.com>
---
lib/librte_eal/bsdapp/eal/eal_pci.c | 10 ++++++++++
lib/librte_eal/bsdapp/eal/rte_eal_version.map | 7 +++++++
lib/librte_eal/common/include/rte_bus.h | 10 ++++++++++
lib/librte_eal/common/include/rte_pci.h | 11 +++++++++++
4 files changed, 38 insertions(+)
diff --git a/lib/librte_eal/bsdapp/eal/eal_pci.c
b/lib/librte_eal/bsdapp/eal/eal_pci.c
index e321461d8..9c6670964 100644
--- a/lib/librte_eal/bsdapp/eal/eal_pci.c
+++ b/lib/librte_eal/bsdapp/eal/eal_pci.c
@@ -405,6 +405,16 @@ rte_pci_scan(void)
return -1;
}
+/*
+ * Get iommu class of pci devices on the bus.
+ */
+enum rte_iova_mode
+rte_pci_get_iommu_class(void)
+{
+ /* Has only one drv (RTE_KDRV_NIC_UIO) so ..*/
+ return RTE_IOVA_PA;
+}
+
int
pci_update_device(const struct rte_pci_addr *addr)
{
diff --git a/lib/librte_eal/bsdapp/eal/rte_eal_version.map
b/lib/librte_eal/bsdapp/eal/rte_eal_version.map
index 2e48a7366..a9cc3a67e 100644
--- a/lib/librte_eal/bsdapp/eal/rte_eal_version.map
+++ b/lib/librte_eal/bsdapp/eal/rte_eal_version.map
@@ -193,3 +193,10 @@ DPDK_17.05 {
vfio_get_group_no;
} DPDK_17.02;
+
+DPDK_17.08 {
+ global:
+
+ rte_pci_get_iommu_class;
+
+} DPDK_17.05;
diff --git a/lib/librte_eal/common/include/rte_bus.h
b/lib/librte_eal/common/include/rte_bus.h
index 7c3696926..56eacd0c9 100644
--- a/lib/librte_eal/common/include/rte_bus.h
+++ b/lib/librte_eal/common/include/rte_bus.h
@@ -56,6 +56,16 @@ extern "C" {
/** Double linked list of buses */
TAILQ_HEAD(rte_bus_list, rte_bus);
+
+/**
+ * IOVA mapping mode.
+ */
+enum rte_iova_mode {
+ RTE_IOVA_DC, /* _DC --> Don't Care mode */
+ RTE_IOVA_PA,
+ RTE_IOVA_VA
+};
+
/**
* Bus specific scan for devices attached on the bus.
* For each bus object, the scan would be reponsible 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 b82ab9e79..bc403123a 100644
--- a/lib/librte_eal/common/include/rte_pci.h
+++ b/lib/librte_eal/common/include/rte_pci.h
@@ -377,6 +377,16 @@ int
rte_pci_probe(void);
/**
+ * 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
*
* Note that driver should not call this function when flag
@@ -472,6 +482,7 @@ int rte_pci_detach(const struct rte_pci_addr *addr);
*/
void rte_pci_dump(FILE *f);
+
/**
* Register a PCI driver.
*
--
2.11.0
