X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=lib%2Flibrte_eal%2Fcommon%2Finclude%2Frte_dev.h;h=6cc9b017ca83bcf87c5e1737bd65b3f494055d59;hb=e8c528cb92840ea334adf69f08264569710964c5;hp=f7e3a104a4e9055754dd79aefed7ff62260dd5a0;hpb=683ef79e57a86dc910f6cbcd7a1061f5ad1e4781;p=dpdk.git

diff --git a/lib/librte_eal/common/include/rte_dev.h b/lib/librte_eal/common/include/rte_dev.h
index f7e3a104a4..6cc9b017ca 100644
--- a/lib/librte_eal/common/include/rte_dev.h
+++ b/lib/librte_eal/common/include/rte_dev.h
@@ -46,8 +46,61 @@
 extern "C" {
 #endif
 
+#include <stdio.h>
 #include <sys/queue.h>
 
+#include <rte_log.h>
+
+__attribute__((format(printf, 2, 0)))
+static inline void
+rte_pmd_debug_trace(const char *func_name, const char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+
+	char buffer[vsnprintf(NULL, 0, fmt, ap) + 1];
+
+	va_end(ap);
+
+	va_start(ap, fmt);
+	vsnprintf(buffer, sizeof(buffer), fmt, ap);
+	va_end(ap);
+
+	rte_log(RTE_LOG_ERR, RTE_LOGTYPE_PMD, "%s: %s", func_name, buffer);
+}
+
+/* Macros for checking for restricting functions to primary instance only */
+#define RTE_PROC_PRIMARY_OR_ERR_RET(retval) do { \
+	if (rte_eal_process_type() != RTE_PROC_PRIMARY) { \
+		RTE_PMD_DEBUG_TRACE("Cannot run in secondary processes\n"); \
+		return retval; \
+	} \
+} while (0)
+
+#define RTE_PROC_PRIMARY_OR_RET() do { \
+	if (rte_eal_process_type() != RTE_PROC_PRIMARY) { \
+		RTE_PMD_DEBUG_TRACE("Cannot run in secondary processes\n"); \
+		return; \
+	} \
+} while (0)
+
+/* Macros to check for invalid function pointers */
+#define RTE_FUNC_PTR_OR_ERR_RET(func, retval) do { \
+	if ((func) == NULL) { \
+		RTE_PMD_DEBUG_TRACE("Function not supported\n"); \
+		return retval; \
+	} \
+} while (0)
+
+#define RTE_FUNC_PTR_OR_RET(func) do { \
+	if ((func) == NULL) { \
+		RTE_PMD_DEBUG_TRACE("Function not supported\n"); \
+		return; \
+	} \
+} while (0)
+
+
 /** Double linked list of device drivers. */
 TAILQ_HEAD(rte_driver_list, rte_driver);
 
@@ -56,6 +109,11 @@ TAILQ_HEAD(rte_driver_list, rte_driver);
  */
 typedef int (rte_dev_init_t)(const char *name, const char *args);
 
+/**
+ * Uninitilization function called for each device driver once.
+ */
+typedef int (rte_dev_uninit_t)(const char *name);
+
 /**
  * Driver type enumeration
  */
@@ -72,6 +130,7 @@ struct rte_driver {
 	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. */
 };
 
 /**
@@ -97,12 +156,78 @@ void rte_eal_driver_unregister(struct rte_driver *driver);
  */
 int rte_eal_dev_init(void);
 
-#define PMD_REGISTER_DRIVER(d)\
-void devinitfn_ ##d(void);\
-void __attribute__((constructor, used)) devinitfn_ ##d(void)\
+/**
+ * Initialize a driver specified by name.
+ *
+ * @param name
+ *   The pointer to a driver name to be initialized.
+ * @param args
+ *   The pointer to arguments used by driver initialization.
+ * @return
+ *  0 on success, negative on error
+ */
+int rte_eal_vdev_init(const char *name, const char *args);
+
+/**
+ * Uninitalize a driver specified by name.
+ *
+ * @param name
+ *   The pointer to a driver name to be initialized.
+ * @return
+ *  0 on success, negative on error
+ */
+int rte_eal_vdev_uninit(const char *name);
+
+/**
+ * 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);
+
+/**
+ * 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 DRIVER_EXPORT_NAME_ARRAY(n, idx) n##idx[]
+
+#define DRIVER_EXPORT_NAME(name, idx) \
+static const char DRIVER_EXPORT_NAME_ARRAY(this_pmd_name, idx) \
+__attribute__((used)) = RTE_STR(name)
+
+#define PMD_REGISTER_DRIVER(drv, nm)\
+RTE_INIT(probefn_ ##drv);\
+static void probefn_ ##drv(void)\
 {\
-	rte_eal_driver_register(&d);\
-}
+	(drv).name = RTE_STR(nm);\
+	rte_eal_driver_register(&drv);\
+} \
+DRIVER_EXPORT_NAME(nm, __COUNTER__)
+
+#define DRV_EXP_TAG(name, tag) __##name##_##tag
+
+#define DRIVER_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) \
+static const char DRV_EXP_TAG(name, param_string_export)[] \
+__attribute__((used)) = str
 
 #ifdef __cplusplus
 }