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