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[219.106.231.132]) by mx.google.com with ESMTPSA id jc3sm18430580pbb.49.2014.11.03.19.46.59 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 03 Nov 2014 19:47:00 -0800 (PST) From: Tetsuya Mukawa To: dev@dpdk.org Date: Tue, 4 Nov 2014 12:45:43 +0900 Message-Id: <1415072748-31937-24-git-send-email-mukawa@igel.co.jp> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1415072748-31937-1-git-send-email-mukawa@igel.co.jp> References: <1414572576-21371-1-git-send-email-mukawa@igel.co.jp> <1415072748-31937-1-git-send-email-mukawa@igel.co.jp> Cc: nakajima.yoshihiro@lab.ntt.co.jp, masutani.hitoshi@lab.ntt.co.jp Subject: [dpdk-dev] [RFC PATCH v2 23/28] eal/pci: Add rte_eal_pci_probe_one and rte_eal_pci_close_one X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 04 Nov 2014 03:37:46 -0000 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 --- 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..33300be 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 + * addrrss, 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 + * addrrss, 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