Provide driver flag which gives an option to map the cdx device
resource before probing the device driver. External driver can
use rte_cdx_map_device() and rte_cdx_unmap_device() APIs to map/
unmap device resource separately.
Signed-off-by: Abhijit Gangurde <abhijit.gangu...@amd.com>
---
v4:
- rte_cdx_map_device() and rte_cdx_unmap_device() APIs are kept
as internal APIs.
v3:
- Changed APIs to __rte_experimental.
v2:
- Corrected _RTE_BUS_CDX_H_ to RTE_BUS_CDX_H
- Improved code comments.
drivers/bus/cdx/bus_cdx_driver.h | 3 +++
drivers/bus/cdx/cdx.c | 10 ++++++----
2 files changed, 9 insertions(+), 4 deletions(-)
diff --git a/drivers/bus/cdx/bus_cdx_driver.h b/drivers/bus/cdx/bus_cdx_driver.h
index fcacdb5896..1c9a64c87a 100644
--- a/drivers/bus/cdx/bus_cdx_driver.h
+++ b/drivers/bus/cdx/bus_cdx_driver.h
@@ -37,6 +37,9 @@ struct rte_cdx_bus;
static const char DRV_EXP_TAG(name, cdx_tbl_export)[] __rte_used = \
RTE_STR(table)
+/** Device needs resource mapping */
+#define RTE_CDX_DRV_NEED_MAPPING 0x0001
+
/**
* A structure describing an ID for a CDX driver. Each driver provides a
* table of these IDs for each device that it supports.
diff --git a/drivers/bus/cdx/cdx.c b/drivers/bus/cdx/cdx.c
index f9526e08cc..541aae76c3 100644
--- a/drivers/bus/cdx/cdx.c
+++ b/drivers/bus/cdx/cdx.c
@@ -383,10 +383,12 @@ cdx_probe_one_driver(struct rte_cdx_driver *dr,
CDX_BUS_DEBUG(" probe device %s using driver: %s", dev_name,
dr->driver.name);
- ret = cdx_vfio_map_resource(dev);
- if (ret != 0) {
- CDX_BUS_ERR("CDX map device failed: %d", ret);
- goto error_map_device;
+ if (dr->drv_flags & RTE_CDX_DRV_NEED_MAPPING) {
+ ret = cdx_vfio_map_resource(dev);
+ if (ret != 0) {
+ CDX_BUS_ERR("CDX map device failed: %d", ret);
+ goto error_map_device;
+ }
}
/* call the driver probe() function */
--
2.34.1
