From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from localhost.my.domain (84.95.210.61.forward.012.net.il [84.95.210.61]) by dpdk.org (Postfix) with ESMTP id D9C515683 for ; Wed, 4 Mar 2015 12:17:06 +0100 (CET) Received: from localhost.my.domain (localhost [127.0.0.1]) by localhost.my.domain (8.14.9/8.14.9) with ESMTP id t24BFukQ002732 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Wed, 4 Mar 2015 11:15:57 GMT (envelope-from root@localhost.my.domain) Received: (from root@localhost) by localhost.my.domain (8.14.9/8.14.9/Submit) id t24BFuS4002731; Wed, 4 Mar 2015 13:15:56 +0200 (IST) (envelope-from root) From: Raz Amir To: dev@dpdk.org Date: Wed, 4 Mar 2015 13:15:54 +0200 Message-Id: <1425467754-2693-1-git-send-email-razamir22@gmail.com> X-Mailer: git-send-email 2.1.2 In-Reply-To: <1424932400-66862-1-git-send-email-razamir22@gmail.com> References: <1424932400-66862-1-git-send-email-razamir22@gmail.com> Subject: [dpdk-dev] [PATCH v3] pci: save list of detached devices, and re-probe during driver unload 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: Wed, 04 Mar 2015 11:17:07 -0000 Added code that saves the pointers to the detached devices, during driver loading, and during driver unloading, go over the list, and re-attach them by calling device_probe_and_attach on each device. Signed-off-by: Raz Amir --- lib/librte_eal/bsdapp/nic_uio/nic_uio.c | 32 ++++++++++++++++++++++++++++---- 1 file changed, 28 insertions(+), 4 deletions(-) diff --git a/lib/librte_eal/bsdapp/nic_uio/nic_uio.c b/lib/librte_eal/bsdapp/nic_uio/nic_uio.c index 5ae8560..78e4dea 100644 --- a/lib/librte_eal/bsdapp/nic_uio/nic_uio.c +++ b/lib/librte_eal/bsdapp/nic_uio/nic_uio.c @@ -55,6 +55,9 @@ __FBSDID("$FreeBSD$"); #define MAX_BARS (PCIR_MAX_BAR_0 + 1) +#define MAX_DETACHED_DEVICES 128 +static device_t detached_devices[MAX_DETACHED_DEVICES] = {}; +static int num_detached = 0; struct nic_uio_softc { device_t dev_t; @@ -289,16 +292,37 @@ nic_uio_load(void) dev = pci_find_bsf(bus, device, function); if (dev != NULL) - for (i = 0; i < NUM_DEVICES; i++) - if (pci_get_vendor(dev) == devices[i].vend && - pci_get_device(dev) == devices[i].dev) - device_detach(dev); + continue; + + for (i = 0; i < NUM_DEVICES; i++) + if (pci_get_vendor(dev) == devices[i].vend && + pci_get_device(dev) == devices[i].dev) { + if (num_detached < MAX_DETACHED_DEVICES) { + printf("nic_uio_load: detaching and storing dev=%p\n", dev); + detached_devices[num_detached++] = dev; + } + else + printf("nic_uio_load: reached MAX_DETACHED_DEVICES=%d. dev=%p won't be reattached\n", + MAX_DETACHED_DEVICES, dev); + device_detach(dev); + } } } static void nic_uio_unload(void) { + int i; + printf("nic_uio_unload: entered ... \n"); + + for (i = 0; i < num_detached; i++) { + printf("nic_uio_unload: calling to device_probe_and_attach for dev=%p...\n", + detached_devices[i]); + device_probe_and_attach(detached_devices[i]); + printf("nic_uio_unload: done.\n"); + } + + printf("nic_uio_unload: leaving ... \n"); } static int -- 2.1.2