The functions are used for probe and close a device.
First the function tries to find a device that has the specfied PCI address.
Then, probe or close the device.
Signed-off-by: Tetsuya Mukawa <mukawa at igel.co.jp>
---
lib/librte_eal/common/eal_common_pci.c | 58 +++++++++++++++++++++++++++++++++
lib/librte_eal/common/include/rte_pci.h | 26 +++++++++++++++
2 files changed, 84 insertions(+)
diff --git a/lib/librte_eal/common/eal_common_pci.c
b/lib/librte_eal/common/eal_common_pci.c
index b404ee0..5ff7b49 100644
--- a/lib/librte_eal/common/eal_common_pci.c
+++ b/lib/librte_eal/common/eal_common_pci.c
@@ -152,6 +152,64 @@ pci_close_all_drivers(struct rte_pci_device *dev)
{
return pci_invoke_all_drivers(dev, INVOKE_CLOSE);
}
+
+static int
+rte_eal_pci_invoke_one(struct rte_pci_addr *addr, int type)
+{
+ struct rte_pci_device *dev = NULL;
+ int ret = 0;
+
+ TAILQ_FOREACH(dev, &pci_device_list, next) {
+ if (eal_compare_pci_addr(&dev->addr, addr))
+ continue;
+
+ switch (type) {
+ case INVOKE_PROBE:
+ ret = pci_probe_all_drivers(dev);
+ break;
+ case INVOKE_CLOSE:
+ ret = pci_close_all_drivers(dev);
+ break;
+ }
+ if (ret < 0)
+ goto invoke_err_return;
+ if (type == INVOKE_CLOSE)
+ goto remove_dev;
+ return 0;
+ }
+
+ return -1;
+
+invoke_err_return:
+ RTE_LOG(WARNING, EAL, "Requested device " PCI_PRI_FMT
+ " cannot be used\n", dev->addr.domain, dev->addr.bus,
+ dev->addr.devid, dev->addr.function);
+ return -1;
+
+remove_dev:
+ TAILQ_REMOVE(&pci_device_list, dev, next);
+ return 0;
+}
+
+/*
+ * Find the pci device specified by pci address, then invoke probe function of
+ * the driver of the devive.
+ */
+int
+rte_eal_pci_probe_one(struct rte_pci_addr *addr)
+{
+ return rte_eal_pci_invoke_one(addr, INVOKE_PROBE);
+}
+
+/*
+ * Find the pci device specified by pci address, then invoke close function of
+ * the driver of the devive.
+ */
+int
+rte_eal_pci_close_one(struct rte_pci_addr *addr)
+{
+ return rte_eal_pci_invoke_one(addr, INVOKE_CLOSE);
+}
#endif /* RTE_LIBRTE_EAL_HOTPLUG & RTE_LIBRTE_EAL_LINUXAPP */
/*
diff --git a/lib/librte_eal/common/include/rte_pci.h
b/lib/librte_eal/common/include/rte_pci.h
index 74720d1..5a7e06f 100644
--- a/lib/librte_eal/common/include/rte_pci.h
+++ b/lib/librte_eal/common/include/rte_pci.h
@@ -311,6 +311,32 @@ eal_compare_pci_addr(struct rte_pci_addr *addr, struct
rte_pci_addr *addr2)
int rte_eal_pci_probe(void);
/**
+ * Probe the single PCI device.
+ *
+ * Scan the content of the PCI bus, and find the pci device specified by pci
+ * address, then call the probe() function for registered driver that has a
+ * matching entry in its id_table for discovered device.
+ *
+ * @return
+ * - 0 on success.
+ * - Negative on error.
+ */
+int rte_eal_pci_probe_one(struct rte_pci_addr *addr);
+
+/**
+ * Close the single PCI device.
+ *
+ * Scan the content of the PCI bus, and find the pci device specified by pci
+ * address, then call the close() function for registered driver that has a
+ * matching entry in its id_table for discovered device.
+ *
+ * @return
+ * - 0 on success.
+ * - Negative on error.
+ */
+int rte_eal_pci_close_one(struct rte_pci_addr *addr);
+
+/**
* Dump the content of the PCI bus.
*
* @param f
--
1.9.1
