[dpdk-dev] [PATCH v6 10/11] pci: implement hotplug bus operation
Gaetan Rivet
gaetan.rivet at 6wind.com
Tue Jun 27 18:11:17 CEST 2017
Signed-off-by: Gaetan Rivet <gaetan.rivet at 6wind.com>
---
lib/librte_eal/common/eal_common_pci.c | 44 ++++++++++++++++++++++++++++++++++
1 file changed, 44 insertions(+)
diff --git a/lib/librte_eal/common/eal_common_pci.c b/lib/librte_eal/common/eal_common_pci.c
index ab55041..e30d2d1 100644
--- a/lib/librte_eal/common/eal_common_pci.c
+++ b/lib/librte_eal/common/eal_common_pci.c
@@ -47,6 +47,7 @@
#include <rte_pci.h>
#include <rte_per_lcore.h>
#include <rte_memory.h>
+#include <rte_memcpy.h>
#include <rte_memzone.h>
#include <rte_eal.h>
#include <rte_string_fns.h>
@@ -508,11 +509,54 @@ pci_find_device(rte_dev_cmp_t cmp,
return NULL;
}
+static struct rte_device *
+pci_plug(struct rte_devargs *da)
+{
+ struct rte_pci_device *pdev;
+ struct rte_pci_addr *addr;
+
+ addr = &da->pci.addr;
+ /*
+ * Update eventual pci device in global list.
+ * Insert it if none was found.
+ */
+ if (pci_update_device(addr) < 0) {
+ rte_errno = EIO;
+ return NULL;
+ }
+ /* Find the current device holding this address in the bus. */
+ FOREACH_DEVICE_ON_PCIBUS(pdev) {
+ if (rte_eal_compare_pci_addr(&pdev->addr, addr) == 0) {
+ if (rte_pci_probe_one(addr) != 0) {
+ rte_errno = ENODEV;
+ return NULL;
+ }
+ break;
+ }
+ }
+ return (pdev != NULL) ? &pdev->device : NULL;
+}
+
+static int
+pci_unplug(struct rte_device *dev)
+{
+ struct rte_pci_device *pdev;
+
+ pdev = RTE_DEV_TO_PCI(dev);
+ if (rte_pci_detach(&pdev->addr) != 0) {
+ rte_errno = ENODEV;
+ return -1;
+ }
+ return 0;
+}
+
struct rte_pci_bus rte_pci_bus = {
.bus = {
.scan = rte_pci_scan,
.probe = rte_pci_probe,
.find_device = pci_find_device,
+ .plug = pci_plug,
+ .unplug = pci_unplug,
},
.device_list = TAILQ_HEAD_INITIALIZER(rte_pci_bus.device_list),
.driver_list = TAILQ_HEAD_INITIALIZER(rte_pci_bus.driver_list),
--
2.1.4
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