From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by dpdk.space (Postfix) with ESMTP id B2A08A046B for ; Tue, 25 Jun 2019 12:42:06 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 3740F1B99B; Tue, 25 Jun 2019 12:42:05 +0200 (CEST) Received: from inva020.nxp.com (inva020.nxp.com [92.121.34.13]) by dpdk.org (Postfix) with ESMTP id 249794F94 for ; Tue, 25 Jun 2019 12:42:04 +0200 (CEST) Received: from inva020.nxp.com (localhost [127.0.0.1]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id A66311A07AE; Tue, 25 Jun 2019 12:42:03 +0200 (CEST) Received: from invc005.ap-rdc01.nxp.com (invc005.ap-rdc01.nxp.com [165.114.16.14]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id C0BB31A07B3; Tue, 25 Jun 2019 12:42:01 +0200 (CEST) Received: from bf-netperf1.ap.freescale.net (bf-netperf1.ap.freescale.net [10.232.133.63]) by invc005.ap-rdc01.nxp.com (Postfix) with ESMTP id 470934028F; Tue, 25 Jun 2019 18:41:59 +0800 (SGT) From: Hemant Agrawal To: dev@dpdk.org Cc: ferruh.yigit@intel.com Date: Tue, 25 Jun 2019 16:10:17 +0530 Message-Id: <20190625104019.19287-1-hemant.agrawal@nxp.com> X-Mailer: git-send-email 2.17.1 X-Virus-Scanned: ClamAV using ClamSMTP Subject: [dpdk-dev] [PATCH 1/3] bus/dpaa: add plug support and rework parse 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: , Errors-To: dev-bounces@dpdk.org Sender: "dev" From: Shreyansh Jain Parse and find_device have specific function - former is for parsing a string passed as argument, whereas the later is for iterating over all the devices in the bus and calling a callback/handler. They have been corrected with their right operations to support hotplugging/devargs plug/unplug calls. Support for plug/unplug too has been added. Signed-off-by: Shreyansh Jain Acked-by: Hemant Agrawal --- drivers/bus/dpaa/dpaa_bus.c | 126 ++++++++++++++++++++++++++------ drivers/bus/dpaa/rte_dpaa_bus.h | 3 + 2 files changed, 108 insertions(+), 21 deletions(-) diff --git a/drivers/bus/dpaa/dpaa_bus.c b/drivers/bus/dpaa/dpaa_bus.c index 08c822781..c2563cc26 100644 --- a/drivers/bus/dpaa/dpaa_bus.c +++ b/drivers/bus/dpaa/dpaa_bus.c @@ -1,6 +1,6 @@ /* SPDX-License-Identifier: BSD-3-Clause * - * Copyright 2017 NXP + * Copyright 2017-2019 NXP * */ /* System headers */ @@ -389,19 +389,28 @@ rte_dpaa_bus_parse(const char *name, void *out_name) { int i, j; int max_fman = 2, max_macs = 16; - char *sep = strchr(name, ':'); + char *dup_name; + char *sep = NULL; - if (strncmp(name, RTE_STR(FSL_DPAA_BUS_NAME), - strlen(RTE_STR(FSL_DPAA_BUS_NAME)))) { - return -EINVAL; - } - - if (!sep) { - DPAA_BUS_ERR("Incorrect device name observed"); - return -EINVAL; - } - - sep = (char *) (sep + 1); + /* There are two ways of passing device name, with and without + * separator. "dpaa_bus:fm1-mac3" with separator, and "fm1-mac3" + * without separator. Both need to be handled. + * It is also possible that "name=fm1-mac3" is passed along. + */ + DPAA_BUS_DEBUG("Parse device name (%s)\n", name); + + /* Check for dpaa_bus:fm1-mac3 style */ + dup_name = strdup(name); + sep = strchr(dup_name, ':'); + if (!sep) + /* If not, check for name=fm1-mac3 style */ + sep = strchr(dup_name, '='); + + if (sep) + /* jump over the seprator */ + sep = (char *) (sep + 1); + else + sep = dup_name; for (i = 0; i < max_fman; i++) { for (j = 0; j < max_macs; j++) { @@ -410,6 +419,7 @@ rte_dpaa_bus_parse(const char *name, void *out_name) if (strcmp(fm_name, sep) == 0) { if (out_name) strcpy(out_name, sep); + free(dup_name); return 0; } } @@ -422,10 +432,12 @@ rte_dpaa_bus_parse(const char *name, void *out_name) if (strcmp(sec_name, sep) == 0) { if (out_name) strcpy(out_name, sep); + free(dup_name); return 0; } } + free(dup_name); return -EINVAL; } @@ -444,7 +456,10 @@ rte_dpaa_bus_scan(void) RTE_LOG(DEBUG, EAL, "DPAA Bus not present. Skipping.\n"); return 0; } - /* detected DPAA devices */ + + if (rte_dpaa_bus.detected) + return 0; + rte_dpaa_bus.detected = 1; /* create the key, supplying a function that'll be invoked @@ -553,12 +568,16 @@ rte_dpaa_bus_probe(void) FILE *svr_file = NULL; unsigned int svr_ver; int probe_all = rte_dpaa_bus.bus.conf.scan_mode != RTE_BUS_SCAN_WHITELIST; + static int process_once; /* If DPAA bus is not present nothing needs to be done */ if (!rte_dpaa_bus.detected) return 0; - rte_dpaa_bus_dev_build(); + /* Device list creation is only done once */ + if (!process_once) + rte_dpaa_bus_dev_build(); + process_once = 1; /* If no device present on DPAA bus nothing needs to be done */ if (TAILQ_EMPTY(&rte_dpaa_bus.device_list)) @@ -618,17 +637,28 @@ rte_dpaa_find_device(const struct rte_device *start, rte_dev_cmp_t cmp, const void *data) { struct rte_dpaa_device *dev; + const struct rte_dpaa_device *dstart; - TAILQ_FOREACH(dev, &rte_dpaa_bus.device_list, next) { - if (start && &dev->device == start) { - start = NULL; /* starting point found */ - continue; - } + /* find_device is called with 'data' as an opaque object - just call + * cmp with this and each device object on bus. + */ + + if (start != NULL) { + dstart = RTE_DEV_TO_DPAA_CONST(start); + dev = TAILQ_NEXT(dstart, next); + } else { + dev = TAILQ_FIRST(&rte_dpaa_bus.device_list); + } - if (cmp(&dev->device, data) == 0) + while (dev != NULL) { + if (cmp(&dev->device, data) == 0) { + DPAA_BUS_DEBUG("Found dev=(%s)\n", dev->device.name); return &dev->device; + } + dev = TAILQ_NEXT(dev, next); } + DPAA_BUS_DEBUG("Unable to find any device\n"); return NULL; } @@ -645,6 +675,57 @@ rte_dpaa_get_iommu_class(void) return RTE_IOVA_PA; } +static int +dpaa_bus_plug(struct rte_device *dev __rte_unused) +{ + /* No operation is performed while plugging the device */ + return 0; +} + +static int +dpaa_bus_unplug(struct rte_device *dev __rte_unused) +{ + /* No operation is performed while unplugging the device */ + return 0; +} + +static void * +dpaa_bus_dev_iterate(const void *start, const char *str, + const struct rte_dev_iterator *it __rte_unused) +{ + const struct rte_dpaa_device *dstart; + struct rte_dpaa_device *dev; + char *dup, *dev_name = NULL; + + /* Expectation is that device would be name=device_name */ + if (strncmp(str, "name=", 5) != 0) { + DPAA_BUS_ERR("Invalid device string (%s)\n", str); + return NULL; + } + + /* Now that name=device_name format is available, split */ + dup = strdup(str); + dev_name = dup + strlen("name="); + + if (start != NULL) { + dstart = RTE_DEV_TO_DPAA_CONST(start); + dev = TAILQ_NEXT(dstart, next); + } else { + dev = TAILQ_FIRST(&rte_dpaa_bus.device_list); + } + + while (dev != NULL) { + if (strcmp(dev->device.name, dev_name) == 0) { + free(dup); + return &dev->device; + } + dev = TAILQ_NEXT(dev, next); + } + + free(dup); + return NULL; +} + static struct rte_dpaa_bus rte_dpaa_bus = { .bus = { .scan = rte_dpaa_bus_scan, @@ -652,6 +733,9 @@ static struct rte_dpaa_bus rte_dpaa_bus = { .parse = rte_dpaa_bus_parse, .find_device = rte_dpaa_find_device, .get_iommu_class = rte_dpaa_get_iommu_class, + .plug = dpaa_bus_plug, + .unplug = dpaa_bus_unplug, + .dev_iterate = dpaa_bus_dev_iterate, }, .device_list = TAILQ_HEAD_INITIALIZER(rte_dpaa_bus.device_list), .driver_list = TAILQ_HEAD_INITIALIZER(rte_dpaa_bus.driver_list), diff --git a/drivers/bus/dpaa/rte_dpaa_bus.h b/drivers/bus/dpaa/rte_dpaa_bus.h index 72fbbfce7..554a56f2e 100644 --- a/drivers/bus/dpaa/rte_dpaa_bus.h +++ b/drivers/bus/dpaa/rte_dpaa_bus.h @@ -30,6 +30,9 @@ #define SVR_LS1046A_FAMILY 0x87070000 #define SVR_MASK 0xffff0000 +#define RTE_DEV_TO_DPAA_CONST(ptr) \ + container_of(ptr, const struct rte_dpaa_device, device) + extern unsigned int dpaa_svr_family; extern RTE_DEFINE_PER_LCORE(bool, dpaa_io); -- 2.17.1