From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gaetan Rivet Subject: [PATCH v10 15/27] bus/pci: implement device iteration and comparison Date: Thu, 5 Jul 2018 13:48:22 +0200 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Cc: Gaetan Rivet To: dev@dpdk.org Return-path: Received: from mail-wr1-f68.google.com (mail-wr1-f68.google.com [209.85.221.68]) by dpdk.org (Postfix) with ESMTP id B3AB51BEC7 for ; Thu, 5 Jul 2018 13:49:16 +0200 (CEST) Received: by mail-wr1-f68.google.com with SMTP id t6-v6so1015562wrn.7 for ; Thu, 05 Jul 2018 04:49:16 -0700 (PDT) In-Reply-To: List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Signed-off-by: Gaetan Rivet --- drivers/bus/pci/Makefile | 3 +- drivers/bus/pci/meson.build | 6 +++- drivers/bus/pci/pci_common.c | 3 +- drivers/bus/pci/pci_params.c | 53 ++++++++++++++++++++++++++++++++++++ drivers/bus/pci/private.h | 25 +++++++++++++++++ 5 files changed, 86 insertions(+), 4 deletions(-) create mode 100644 drivers/bus/pci/pci_params.c diff --git a/drivers/bus/pci/Makefile b/drivers/bus/pci/Makefile index cf373068a..4de953f8f 100644 --- a/drivers/bus/pci/Makefile +++ b/drivers/bus/pci/Makefile @@ -26,10 +26,11 @@ CFLAGS += -I$(RTE_SDK)/lib/librte_eal/$(SYSTEM)app/eal CFLAGS += -DALLOW_EXPERIMENTAL_API LDLIBS += -lrte_eal -lrte_mbuf -lrte_mempool -lrte_ring -LDLIBS += -lrte_ethdev -lrte_pci +LDLIBS += -lrte_ethdev -lrte_pci -lrte_kvargs include $(RTE_SDK)/drivers/bus/pci/$(SYSTEM)/Makefile SRCS-$(CONFIG_RTE_LIBRTE_PCI_BUS) := $(addprefix $(SYSTEM)/,$(SRCS)) +SRCS-$(CONFIG_RTE_LIBRTE_PCI_BUS) += pci_params.c SRCS-$(CONFIG_RTE_LIBRTE_PCI_BUS) += pci_common.c SRCS-$(CONFIG_RTE_LIBRTE_PCI_BUS) += pci_common_uio.c diff --git a/drivers/bus/pci/meson.build b/drivers/bus/pci/meson.build index 72939e598..23d6a5fec 100644 --- a/drivers/bus/pci/meson.build +++ b/drivers/bus/pci/meson.build @@ -3,7 +3,9 @@ deps += ['pci'] install_headers('rte_bus_pci.h') -sources = files('pci_common.c', 'pci_common_uio.c') +sources = files('pci_common.c', + 'pci_common_uio.c', + 'pci_params.c') if host_machine.system() == 'linux' sources += files('linux/pci.c', 'linux/pci_uio.c', @@ -17,3 +19,5 @@ endif # memseg walk is not part of stable API yet allow_experimental_apis = true + +deps += ['kvargs'] diff --git a/drivers/bus/pci/pci_common.c b/drivers/bus/pci/pci_common.c index 94b0f4143..5b7854490 100644 --- a/drivers/bus/pci/pci_common.c +++ b/drivers/bus/pci/pci_common.c @@ -29,8 +29,6 @@ static void rte_pci_remove_device(struct rte_pci_device *pci_device); -extern struct rte_pci_bus rte_pci_bus; - #define SYSFS_PCI_DEVICES "/sys/bus/pci/devices" const char *rte_pci_get_sysfs_path(void) @@ -437,6 +435,7 @@ struct rte_pci_bus rte_pci_bus = { .unplug = pci_unplug, .parse = pci_parse, .get_iommu_class = rte_pci_get_iommu_class, + .dev_iterate = rte_pci_dev_iterate, }, .device_list = TAILQ_HEAD_INITIALIZER(rte_pci_bus.device_list), .driver_list = TAILQ_HEAD_INITIALIZER(rte_pci_bus.driver_list), diff --git a/drivers/bus/pci/pci_params.c b/drivers/bus/pci/pci_params.c new file mode 100644 index 000000000..0fde75803 --- /dev/null +++ b/drivers/bus/pci/pci_params.c @@ -0,0 +1,53 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright 2018 Gaëtan Rivet + */ + +#include +#include +#include +#include +#include + +#include "private.h" + +enum pci_params { + RTE_PCI_PARAMS_MAX, +}; + +static const char * const pci_params_keys[] = { + [RTE_PCI_PARAMS_MAX] = NULL, +}; + +static int +pci_dev_match(const struct rte_device *dev, + const void *_kvlist) +{ + const struct rte_kvargs *kvlist = _kvlist; + + (void) dev; + (void) kvlist; + return 0; +} + +void * +rte_pci_dev_iterate(const void *start, + const char *str, + const struct rte_dev_iterator *it __rte_unused) +{ + rte_bus_find_device_t find_device; + struct rte_kvargs *kvargs = NULL; + struct rte_device *dev; + + if (str != NULL) { + kvargs = rte_kvargs_parse(str, pci_params_keys); + if (kvargs == NULL) { + RTE_LOG(ERR, EAL, "cannot parse argument list\n"); + rte_errno = EINVAL; + return NULL; + } + } + find_device = rte_pci_bus.bus.find_device; + dev = find_device(start, pci_dev_match, kvargs); + rte_kvargs_free(kvargs); + return dev; +} diff --git a/drivers/bus/pci/private.h b/drivers/bus/pci/private.h index 8ddd03e16..0e689fa74 100644 --- a/drivers/bus/pci/private.h +++ b/drivers/bus/pci/private.h @@ -10,6 +10,8 @@ #include #include +extern struct rte_pci_bus rte_pci_bus; + struct rte_pci_driver; struct rte_pci_device; @@ -166,4 +168,27 @@ rte_pci_match(const struct rte_pci_driver *pci_drv, enum rte_iova_mode rte_pci_get_iommu_class(void); +/* + * Iterate over internal devices, + * matching any device against the provided + * string. + * + * @param start + * Iteration starting point. + * + * @param str + * Device string to match against. + * + * @param it + * (unused) iterator structure. + * + * @return + * A pointer to the next matching device if any. + * NULL otherwise. + */ +void * +rte_pci_dev_iterate(const void *start, + const char *str, + const struct rte_dev_iterator *it); + #endif /* _PCI_PRIVATE_H_ */ -- 2.18.0