From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm0-f42.google.com (mail-wm0-f42.google.com [74.125.82.42]) by dpdk.org (Postfix) with ESMTP id 5ACF9FB34 for ; Thu, 19 Jan 2017 05:45:34 +0100 (CET) Received: by mail-wm0-f42.google.com with SMTP id c206so58683136wme.0 for ; Wed, 18 Jan 2017 20:45:34 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=6wind-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=4lDpErPm2PcQCb7XhuupSoqCYOf15UwH8WRN4b9xZSQ=; b=szdv7QJ7S/BXXVkI7qNbc8cLDUza0DOio7c9IdxGr2HCAaHDtMEXJMGwNRDCZDDoOu iL+TKb9txoMBpFwnbS8vDCbPivqydEIBJqFeho3j3dDRDjbxD9CLKRosER37Soz2uMGc ttyniZoOAYqSUvkzPSJVBv/h9AJ/0xKnKbpZmIwvj05AC4dlll4zOhnFnyH3BgTBq98C W5ynkHH9F10L2zipsG/aPJTvqSMHrIaHlO/jfcd9PsFAWNWcJ8PDwyYV1qvClilDFzci GaWOxKCbXdfT9Hp36S+a5Af0QR5uNzKYVrTu982+WMEduopHg5PdjeQ1qzbHkVPS1KmY RCgQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=4lDpErPm2PcQCb7XhuupSoqCYOf15UwH8WRN4b9xZSQ=; b=ZpnnzXPtPs6nJgIev7TsPpsYrCHWE82le2dZGBfPEXl3ykpeLybXl++Q3zxMjFkghH pBl4pL8as9pG/hKYjeR2b6uooPmLuI4cHBcpzJVIypLyzfYaEMA+UHVhO+N1+hyqro3s LnN0nKyU+RaUe5ogU9GqNzscG0Fbk8arnzGuqo1duTlk4nKpRzOj6vm+lnOUPjlxwDL2 abrDaNAJJN1kq8X1BU+7DYoYomr2stp04ttS5q7Gxi+rt+dsnSav74nqfzTjXmm4KPuk 6znG9k8FWsF0a1Cuj8YesNF94Px4PLqmK+RmiDstqyo6RJEEy2XUQ5MNS7QbxjaOqMGU 9XiQ== X-Gm-Message-State: AIkVDXJKY4Ra48idakX3dTc234MFx5ruqMFkrxeRBP9J0JnEgK8EvidbZ/csGOWGfwL9jBBJ X-Received: by 10.223.160.43 with SMTP id k40mr6452066wrk.24.1484801133795; Wed, 18 Jan 2017 20:45:33 -0800 (PST) Received: from XPS13.localdomain (184.203.134.77.rev.sfr.net. [77.134.203.184]) by smtp.gmail.com with ESMTPSA id t194sm2568586wmd.1.2017.01.18.20.45.32 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 18 Jan 2017 20:45:33 -0800 (PST) From: Thomas Monjalon To: Shreyansh Jain Cc: dev@dpdk.org Date: Thu, 19 Jan 2017 05:45:15 +0100 Message-Id: <1484801117-779-12-git-send-email-thomas.monjalon@6wind.com> X-Mailer: git-send-email 2.7.0 In-Reply-To: <1484801117-779-1-git-send-email-thomas.monjalon@6wind.com> References: <1484748329-5418-1-git-send-email-shreyansh.jain@nxp.com> <1484801117-779-1-git-send-email-thomas.monjalon@6wind.com> Subject: [dpdk-dev] [PATCH v11 11/13] pci: use bus driver for scan/probe X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 19 Jan 2017 04:45:34 -0000 From: Shreyansh Jain Remove EAL initiated direct PCI scan/probe and enable PCI Bus linkage. Signed-off-by: Shreyansh Jain Reviewed-by: Ferruh Yigit Signed-off-by: Thomas Monjalon --- lib/librte_eal/bsdapp/eal/eal.c | 7 ----- lib/librte_eal/bsdapp/eal/eal_pci.c | 32 ++++++++------------- lib/librte_eal/bsdapp/eal/rte_eal_version.map | 2 -- lib/librte_eal/common/eal_common_pci.c | 26 +++++++---------- lib/librte_eal/common/eal_private.h | 10 ------- lib/librte_eal/common/include/rte_pci.h | 19 +++---------- lib/librte_eal/linuxapp/eal/eal.c | 7 ----- lib/librte_eal/linuxapp/eal/eal_pci.c | 38 +++++++++---------------- lib/librte_eal/linuxapp/eal/rte_eal_version.map | 2 -- 9 files changed, 41 insertions(+), 102 deletions(-) diff --git a/lib/librte_eal/bsdapp/eal/eal.c b/lib/librte_eal/bsdapp/eal/eal.c index ee7c9de..a7f2671 100644 --- a/lib/librte_eal/bsdapp/eal/eal.c +++ b/lib/librte_eal/bsdapp/eal/eal.c @@ -562,9 +562,6 @@ rte_eal_init(int argc, char **argv) if (rte_eal_timer_init() < 0) rte_panic("Cannot init HPET or TSC timers\n"); - if (rte_eal_pci_init() < 0) - rte_panic("Cannot init PCI\n"); - eal_check_mem_on_local_socket(); if (eal_plugins_init() < 0) @@ -617,10 +614,6 @@ rte_eal_init(int argc, char **argv) if (rte_bus_probe()) rte_panic("Cannot probe devices\n"); - /* Probe & Initialize PCI devices */ - if (rte_eal_pci_probe()) - rte_panic("Cannot probe PCI\n"); - if (rte_eal_dev_init() < 0) rte_panic("Cannot init pmd devices\n"); diff --git a/lib/librte_eal/bsdapp/eal/eal_pci.c b/lib/librte_eal/bsdapp/eal/eal_pci.c index 48bfe24..103ad70 100644 --- a/lib/librte_eal/bsdapp/eal/eal_pci.c +++ b/lib/librte_eal/bsdapp/eal/eal_pci.c @@ -87,6 +87,9 @@ * enabling bus master. */ +/* Forward declaration of PCI bus */ +struct rte_pci_bus rte_pci_bus; + /* Map pci device */ int rte_eal_pci_map_device(struct rte_pci_device *dev) @@ -313,19 +316,19 @@ pci_scan_one(int dev_pci_fd, struct pci_conf *conf) } /* device is valid, add in list (sorted) */ - if (TAILQ_EMPTY(&pci_device_list)) { - TAILQ_INSERT_TAIL(&pci_device_list, dev, next); + if (TAILQ_EMPTY(&rte_pci_bus.device_list)) { + rte_eal_pci_add_device(dev); } else { struct rte_pci_device *dev2 = NULL; int ret; - TAILQ_FOREACH(dev2, &pci_device_list, next) { + TAILQ_FOREACH(dev2, &rte_pci_bus.device_list, next) { ret = rte_eal_compare_pci_addr(&dev->addr, &dev2->addr); if (ret > 0) continue; else if (ret < 0) { - TAILQ_INSERT_BEFORE(dev2, dev, next); + rte_eal_pci_insert_device(dev2, dev); return 0; } else { /* already registered */ dev2->kdrv = dev->kdrv; @@ -337,7 +340,7 @@ pci_scan_one(int dev_pci_fd, struct pci_conf *conf) return 0; } } - TAILQ_INSERT_TAIL(&pci_device_list, dev, next); + rte_eal_pci_add_device(dev); } return 0; @@ -365,6 +368,10 @@ rte_eal_pci_scan(void) .matches = &matches[0], }; + /* for debug purposes, PCI can be disabled */ + if (internal_config.no_pci) + return 0; + fd = open("/dev/pci", O_RDONLY); if (fd < 0) { RTE_LOG(ERR, EAL, "%s(): error opening /dev/pci\n", __func__); @@ -659,21 +666,6 @@ rte_eal_pci_ioport_unmap(struct rte_pci_ioport *p) return ret; } -/* Init the PCI EAL subsystem */ -int -rte_eal_pci_init(void) -{ - /* for debug purposes, PCI can be disabled */ - if (internal_config.no_pci) - return 0; - - if (rte_eal_pci_scan() < 0) { - RTE_LOG(ERR, EAL, "%s(): Cannot scan PCI bus\n", __func__); - return -1; - } - return 0; -} - struct rte_pci_bus rte_pci_bus = { .bus = { .scan = rte_eal_pci_scan, diff --git a/lib/librte_eal/bsdapp/eal/rte_eal_version.map b/lib/librte_eal/bsdapp/eal/rte_eal_version.map index afa1643..c7c2a05 100644 --- a/lib/librte_eal/bsdapp/eal/rte_eal_version.map +++ b/lib/librte_eal/bsdapp/eal/rte_eal_version.map @@ -6,8 +6,6 @@ DPDK_2.0 { eal_parse_sysfs_value; eal_timer_source; lcore_config; - pci_device_list; - pci_driver_list; per_lcore__lcore_id; per_lcore__rte_errno; rte_calloc; diff --git a/lib/librte_eal/common/eal_common_pci.c b/lib/librte_eal/common/eal_common_pci.c index c53e2bd..5149e6e 100644 --- a/lib/librte_eal/common/eal_common_pci.c +++ b/lib/librte_eal/common/eal_common_pci.c @@ -83,11 +83,6 @@ #include "eal_private.h" -struct pci_driver_list pci_driver_list = - TAILQ_HEAD_INITIALIZER(pci_driver_list); -struct pci_device_list pci_device_list = - TAILQ_HEAD_INITIALIZER(pci_device_list); - extern struct rte_pci_bus rte_pci_bus; #define SYSFS_PCI_DEVICES "/sys/bus/pci/devices" @@ -311,7 +306,7 @@ pci_probe_all_drivers(struct rte_pci_device *dev) if (dev->driver != NULL) return 0; - TAILQ_FOREACH(dr, &pci_driver_list, next) { + FOREACH_DRIVER_ON_PCIBUS(dr) { rc = rte_eal_pci_probe_one_driver(dr, dev); if (rc < 0) /* negative value is an error */ @@ -332,6 +327,7 @@ int rte_eal_pci_probe_one(const struct rte_pci_addr *addr) { struct rte_pci_device *dev = NULL; + int ret = 0; if (addr == NULL) @@ -343,7 +339,7 @@ rte_eal_pci_probe_one(const struct rte_pci_addr *addr) if (pci_update_device(addr) < 0) goto err_return; - TAILQ_FOREACH(dev, &pci_device_list, next) { + FOREACH_DEVICE_ON_PCIBUS(dev) { if (rte_eal_compare_pci_addr(&dev->addr, addr)) continue; @@ -373,7 +369,7 @@ rte_eal_pci_detach(const struct rte_pci_addr *addr) if (addr == NULL) return -1; - TAILQ_FOREACH(dev, &pci_device_list, next) { + FOREACH_DEVICE_ON_PCIBUS(dev) { if (rte_eal_compare_pci_addr(&dev->addr, addr)) continue; @@ -385,7 +381,7 @@ rte_eal_pci_detach(const struct rte_pci_addr *addr) /* positive value means driver doesn't support it */ continue; - TAILQ_REMOVE(&pci_device_list, dev, next); + rte_eal_pci_remove_device(dev); free(dev); return 0; } @@ -414,7 +410,7 @@ rte_eal_pci_probe(void) if (rte_eal_devargs_type_count(RTE_DEVTYPE_WHITELISTED_PCI) == 0) probe_all = 1; - TAILQ_FOREACH(dev, &pci_device_list, next) { + FOREACH_DEVICE_ON_PCIBUS(dev) { /* set devargs in PCI structure */ devargs = pci_devargs_lookup(dev); @@ -462,7 +458,7 @@ rte_eal_pci_dump(FILE *f) { struct rte_pci_device *dev = NULL; - TAILQ_FOREACH(dev, &pci_device_list, next) { + FOREACH_DEVICE_ON_PCIBUS(dev) { pci_dump_one_device(f, dev); } } @@ -471,16 +467,16 @@ rte_eal_pci_dump(FILE *f) void rte_eal_pci_register(struct rte_pci_driver *driver) { - TAILQ_INSERT_TAIL(&pci_driver_list, driver, next); - rte_eal_driver_register(&driver->driver); + TAILQ_INSERT_TAIL(&rte_pci_bus.driver_list, driver, next); + driver->bus = &rte_pci_bus; } /* unregister a driver */ void rte_eal_pci_unregister(struct rte_pci_driver *driver) { - rte_eal_driver_unregister(&driver->driver); - TAILQ_REMOVE(&pci_driver_list, driver, next); + TAILQ_REMOVE(&rte_pci_bus.driver_list, driver, next); + driver->bus = NULL; } /* Add a device to PCI bus */ diff --git a/lib/librte_eal/common/eal_private.h b/lib/librte_eal/common/eal_private.h index 9e7d8f6..68386e8 100644 --- a/lib/librte_eal/common/eal_private.h +++ b/lib/librte_eal/common/eal_private.h @@ -108,16 +108,6 @@ int rte_eal_timer_init(void); */ int rte_eal_log_init(const char *id, int facility); -/** - * Init the PCI infrastructure - * - * This function is private to EAL. - * - * @return - * 0 on success, negative on error - */ -int rte_eal_pci_init(void); - struct rte_pci_driver; struct rte_pci_device; diff --git a/lib/librte_eal/common/include/rte_pci.h b/lib/librte_eal/common/include/rte_pci.h index 957cddb..bab8df4 100644 --- a/lib/librte_eal/common/include/rte_pci.h +++ b/lib/librte_eal/common/include/rte_pci.h @@ -87,12 +87,6 @@ extern "C" { #include #include -TAILQ_HEAD(pci_device_list, rte_pci_device); /**< PCI devices in D-linked Q. */ -TAILQ_HEAD(pci_driver_list, rte_pci_driver); /**< PCI drivers in D-linked Q. */ - -extern struct pci_driver_list pci_driver_list; /**< Global list of PCI drivers. */ -extern struct pci_device_list pci_device_list; /**< Global list of PCI devices. */ - /** Pathname of PCI devices directory. */ const char *pci_get_sysfs_path(void); @@ -208,8 +202,6 @@ struct rte_pci_device { .subsystem_device_id = PCI_ANY_ID #endif -struct rte_pci_driver; - /** * Initialisation function for the driver called during PCI probing. */ @@ -416,17 +408,14 @@ rte_pci_match(const struct rte_pci_driver *pci_drv, const struct rte_pci_device *pci_dev); /** - * Probe the PCI bus for registered drivers. - * - * Scan the content of the PCI bus, and call the probe() function for - * all registered drivers that have a matching entry in its id_table - * for discovered devices. + * Probe the PCI bus * * @return * - 0 on success. - * - Negative on error. + * - !0 on error. */ -int rte_eal_pci_probe(void); +int +rte_eal_pci_probe(void); /** * Map the PCI device resources in user space virtual memory address diff --git a/lib/librte_eal/linuxapp/eal/eal.c b/lib/librte_eal/linuxapp/eal/eal.c index bf6b818..6bb7fc9 100644 --- a/lib/librte_eal/linuxapp/eal/eal.c +++ b/lib/librte_eal/linuxapp/eal/eal.c @@ -803,9 +803,6 @@ rte_eal_init(int argc, char **argv) if (rte_eal_log_init(logid, internal_config.syslog_facility) < 0) rte_panic("Cannot init logs\n"); - if (rte_eal_pci_init() < 0) - rte_panic("Cannot init PCI\n"); - #ifdef VFIO_PRESENT if (rte_eal_vfio_setup() < 0) rte_panic("Cannot init VFIO\n"); @@ -888,10 +885,6 @@ rte_eal_init(int argc, char **argv) if (rte_bus_probe()) rte_panic("Cannot probe devices\n"); - /* Probe & Initialize PCI devices */ - if (rte_eal_pci_probe()) - rte_panic("Cannot probe PCI\n"); - if (rte_eal_dev_init() < 0) rte_panic("Cannot init pmd devices\n"); diff --git a/lib/librte_eal/linuxapp/eal/eal_pci.c b/lib/librte_eal/linuxapp/eal/eal_pci.c index c40814d..d6f9855 100644 --- a/lib/librte_eal/linuxapp/eal/eal_pci.c +++ b/lib/librte_eal/linuxapp/eal/eal_pci.c @@ -55,6 +55,9 @@ * IGB_UIO driver (or doesn't initialize, if the device wasn't bound to it). */ +/* Forward declaration of PCI bus */ +struct rte_pci_bus rte_pci_bus; + static int pci_get_kernel_driver_by_path(const char *filename, char *dri_name) { @@ -347,21 +350,19 @@ pci_scan_one(const char *dirname, const struct rte_pci_addr *addr) dev->kdrv = RTE_KDRV_NONE; /* device is valid, add in list (sorted) */ - if (TAILQ_EMPTY(&pci_device_list)) { - rte_eal_device_insert(&dev->device); - TAILQ_INSERT_TAIL(&pci_device_list, dev, next); + if (TAILQ_EMPTY(&rte_pci_bus.device_list)) { + rte_eal_pci_add_device(dev); } else { struct rte_pci_device *dev2; int ret; - TAILQ_FOREACH(dev2, &pci_device_list, next) { + TAILQ_FOREACH(dev2, &rte_pci_bus.device_list, next) { ret = rte_eal_compare_pci_addr(&dev->addr, &dev2->addr); if (ret > 0) continue; if (ret < 0) { - TAILQ_INSERT_BEFORE(dev2, dev, next); - rte_eal_device_insert(&dev->device); + rte_eal_pci_insert_device(dev2, dev); } else { /* already registered */ dev2->kdrv = dev->kdrv; dev2->max_vfs = dev->max_vfs; @@ -371,8 +372,8 @@ pci_scan_one(const char *dirname, const struct rte_pci_addr *addr) } return 0; } - rte_eal_device_insert(&dev->device); - TAILQ_INSERT_TAIL(&pci_device_list, dev, next); + + rte_eal_pci_add_device(dev); } return 0; @@ -448,6 +449,10 @@ rte_eal_pci_scan(void) char dirname[PATH_MAX]; struct rte_pci_addr addr; + /* for debug purposes, PCI can be disabled */ + if (internal_config.no_pci) + return 0; + dir = opendir(pci_get_sysfs_path()); if (dir == NULL) { RTE_LOG(ERR, EAL, "%s(): opendir failed: %s\n", @@ -464,6 +469,7 @@ rte_eal_pci_scan(void) snprintf(dirname, sizeof(dirname), "%s/%s", pci_get_sysfs_path(), e->d_name); + if (pci_scan_one(dirname, &addr) < 0) goto error; } @@ -709,22 +715,6 @@ rte_eal_pci_ioport_unmap(struct rte_pci_ioport *p) return ret; } -/* Init the PCI EAL subsystem */ -int -rte_eal_pci_init(void) -{ - /* for debug purposes, PCI can be disabled */ - if (internal_config.no_pci) - return 0; - - if (rte_eal_pci_scan() < 0) { - RTE_LOG(ERR, EAL, "%s(): Cannot scan PCI bus\n", __func__); - return -1; - } - - return 0; -} - struct rte_pci_bus rte_pci_bus = { .bus = { .scan = rte_eal_pci_scan, diff --git a/lib/librte_eal/linuxapp/eal/rte_eal_version.map b/lib/librte_eal/linuxapp/eal/rte_eal_version.map index b557e7c..84dfbe7 100644 --- a/lib/librte_eal/linuxapp/eal/rte_eal_version.map +++ b/lib/librte_eal/linuxapp/eal/rte_eal_version.map @@ -6,8 +6,6 @@ DPDK_2.0 { eal_parse_sysfs_value; eal_timer_source; lcore_config; - pci_device_list; - pci_driver_list; per_lcore__lcore_id; per_lcore__rte_errno; rte_calloc; -- 2.7.0