[dpdk-dev] [PATCH v2 11/13] bus/pci: process declarative PCI devargs

[Gaetan Rivet]

Introduce the facility to process future PCI parameters.

Once the matching between PCI devices and devargs has been done, it is
possible to process each devargs. New parameters would have the PCI
device handle to work with when parsing the device (bus specific)
parameters.

Signed-off-by: Gaetan Rivet <gaetan.rivet at 6wind.com>
---
 drivers/bus/pci/pci_common.c |  3 +++
 drivers/bus/pci/pci_params.c |  7 +++++++
 drivers/bus/pci/private.h    | 13 +++++++++++++
 3 files changed, 23 insertions(+)

diff --git a/drivers/bus/pci/pci_common.c b/drivers/bus/pci/pci_common.c
index c7695d108..900cd9090 100644
--- a/drivers/bus/pci/pci_common.c
+++ b/drivers/bus/pci/pci_common.c
@@ -247,6 +247,9 @@ pci_probe_all_drivers(struct rte_pci_device *dev)
 	if (dev->driver != NULL)
 		return 0;
 
+	if (rte_pci_devargs_process(dev) < 0)
+		return -1;
+
 	FOREACH_DRIVER_ON_PCIBUS(dr) {
 		rc = rte_pci_probe_one_driver(dr, dev);
 		if (rc < 0)
diff --git a/drivers/bus/pci/pci_params.c b/drivers/bus/pci/pci_params.c
index a09af3b1c..31143c845 100644
--- a/drivers/bus/pci/pci_params.c
+++ b/drivers/bus/pci/pci_params.c
@@ -127,3 +127,10 @@ rte_pci_devargs_prepare(struct rte_devargs *devargs)
 	rte_kvargs_free(kvargs);
 	return ret;
 }
+
+int
+rte_pci_devargs_process(struct rte_pci_device *pdev __rte_unused)
+{
+	/* For the moment, no PCI param needs to be processed. */
+	return 0;
+}
diff --git a/drivers/bus/pci/private.h b/drivers/bus/pci/private.h
index 9beb24c6a..06dc85e85 100644
--- a/drivers/bus/pci/private.h
+++ b/drivers/bus/pci/private.h
@@ -207,4 +207,17 @@ rte_pci_dev_iterate(const void *start,
 int
 rte_pci_devargs_prepare(struct rte_devargs *da);
 
+/*
+ * Process the device devargs, if any.
+ *
+ * @param pdev
+ *   PCI device
+ *
+ * @return
+ *   0 on success.
+ *   <0 on error.
+ */
+int
+rte_pci_devargs_process(struct rte_pci_device *pdev);
+
 #endif /* _PCI_PRIVATE_H_ */
-- 
2.18.0