diff options
author | 2016-12-08 14:07:29 +0100 | |
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committer | 2016-12-08 14:10:05 +0100 | |
commit | 6b3e017e5d25f15da73f7700f7f2ac553ef1a2e9 (patch) | |
tree | 1b1fb3f903b2282e261ade69e3c17952b3fd3464 /lib/librte_eal/common/include/rte_dev.h | |
parent | 32e04ea00cd159613e04acef75e52bfca6eeff2f (diff) |
Imported Upstream version 16.11
Change-Id: I1944c65ddc88a9ad70f8c0eb6731552b84fbcb77
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Diffstat (limited to 'lib/librte_eal/common/include/rte_dev.h')
-rw-r--r-- | lib/librte_eal/common/include/rte_dev.h | 88 |
1 files changed, 62 insertions, 26 deletions
diff --git a/lib/librte_eal/common/include/rte_dev.h b/lib/librte_eal/common/include/rte_dev.h index 95789f9d..8840380d 100644 --- a/lib/librte_eal/common/include/rte_dev.h +++ b/lib/librte_eal/common/include/rte_dev.h @@ -100,37 +100,56 @@ rte_pmd_debug_trace(const char *func_name, const char *fmt, ...) } \ } while (0) +/** + * A generic memory resource representation. + */ +struct rte_mem_resource { + uint64_t phys_addr; /**< Physical address, 0 if not resource. */ + uint64_t len; /**< Length of the resource. */ + void *addr; /**< Virtual address, NULL when not mapped. */ +}; /** Double linked list of device drivers. */ TAILQ_HEAD(rte_driver_list, rte_driver); +/** Double linked list of devices. */ +TAILQ_HEAD(rte_device_list, rte_device); + +/* Forward declaration */ +struct rte_driver; /** - * Initialization function called for each device driver once. + * A structure describing a generic device. */ -typedef int (rte_dev_init_t)(const char *name, const char *args); +struct rte_device { + TAILQ_ENTRY(rte_device) next; /**< Next device */ + struct rte_driver *driver; /**< Associated driver */ + int numa_node; /**< NUMA node connection */ + struct rte_devargs *devargs; /**< Device user arguments */ +}; /** - * Uninitilization function called for each device driver once. + * Insert a device detected by a bus scanning. + * + * @param dev + * A pointer to a rte_device structure describing the detected device. */ -typedef int (rte_dev_uninit_t)(const char *name); +void rte_eal_device_insert(struct rte_device *dev); /** - * Driver type enumeration + * Remove a device (e.g. when being unplugged). + * + * @param dev + * A pointer to a rte_device structure describing the device to be removed. */ -enum pmd_type { - PMD_VDEV = 0, - PMD_PDEV = 1, -}; +void rte_eal_device_remove(struct rte_device *dev); /** * A structure describing a device driver. */ struct rte_driver { TAILQ_ENTRY(rte_driver) next; /**< Next in list. */ - enum pmd_type type; /**< PMD Driver type */ const char *name; /**< Driver name. */ - rte_dev_init_t *init; /**< Device init. function. */ - rte_dev_uninit_t *uninit; /**< Device uninit. function. */ + const char *alias; /**< Driver alias. */ }; /** @@ -178,28 +197,45 @@ int rte_eal_vdev_init(const char *name, const char *args); */ int rte_eal_vdev_uninit(const char *name); -#define DRIVER_EXPORT_NAME_ARRAY(n, idx) n##idx[] +/** + * Attach a device to a registered driver. + * + * @param name + * The device name, that refers to a pci device (or some private + * way of designating a vdev device). Based on this device name, eal + * will identify a driver capable of handling it and pass it to the + * driver probing function. + * @param devargs + * Device arguments to be passed to the driver. + * @return + * 0 on success, negative on error. + */ +int rte_eal_dev_attach(const char *name, const char *devargs); -#define DRIVER_EXPORT_NAME(name, idx) \ -static const char DRIVER_EXPORT_NAME_ARRAY(this_pmd_name, idx) \ -__attribute__((used)) = RTE_STR(name) +/** + * Detach a device from its driver. + * + * @param name + * Same description as for rte_eal_dev_attach(). + * Here, eal will call the driver detaching function. + * @return + * 0 on success, negative on error. + */ +int rte_eal_dev_detach(const char *name); -#define PMD_REGISTER_DRIVER(drv, nm)\ -void devinitfn_ ##drv(void);\ -void __attribute__((constructor, used)) devinitfn_ ##drv(void)\ -{\ - (drv).name = RTE_STR(nm);\ - rte_eal_driver_register(&drv);\ -} \ -DRIVER_EXPORT_NAME(nm, __COUNTER__) +#define RTE_PMD_EXPORT_NAME_ARRAY(n, idx) n##idx[] + +#define RTE_PMD_EXPORT_NAME(name, idx) \ +static const char RTE_PMD_EXPORT_NAME_ARRAY(this_pmd_name, idx) \ +__attribute__((used)) = RTE_STR(name) #define DRV_EXP_TAG(name, tag) __##name##_##tag -#define DRIVER_REGISTER_PCI_TABLE(name, table) \ +#define RTE_PMD_REGISTER_PCI_TABLE(name, table) \ static const char DRV_EXP_TAG(name, pci_tbl_export)[] __attribute__((used)) = \ RTE_STR(table) -#define DRIVER_REGISTER_PARAM_STRING(name, str) \ +#define RTE_PMD_REGISTER_PARAM_STRING(name, str) \ static const char DRV_EXP_TAG(name, param_string_export)[] \ __attribute__((used)) = str |