X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=lib%2Flibrte_eal%2Fcommon%2Feal_common_devargs.c;h=0465cf64db75f0b67f7d4acccd043c8accd6e3eb;hb=02823c1db0bc;hp=3aace0838a790d1c3d603e63d82037a5ab941a0f;hpb=c07691ae10894bb6bf284fed75829b95844eacdb;p=dpdk.git

diff --git a/lib/librte_eal/common/eal_common_devargs.c b/lib/librte_eal/common/eal_common_devargs.c
index 3aace0838a..0465cf64db 100644
--- a/lib/librte_eal/common/eal_common_devargs.c
+++ b/lib/librte_eal/common/eal_common_devargs.c
@@ -31,11 +31,15 @@
  */
 
 /* This file manages the list of devices and their arguments, as given
- * by the user at startup */
+ * by the user at startup
+ *
+ * Code here should not call rte_log since the EAL environment
+ * may not be initialized.
+ */
 
+#include <stdio.h>
 #include <string.h>
 
-#include <rte_log.h>
 #include <rte_pci.h>
 #include <rte_devargs.h>
 #include "eal_private.h"
@@ -44,73 +48,125 @@
 struct rte_devargs_list devargs_list =
 	TAILQ_HEAD_INITIALIZER(devargs_list);
 
+int
+rte_eal_parse_devargs_str(const char *devargs_str,
+			char **drvname, char **drvargs)
+{
+	char *sep;
+
+	if ((devargs_str) == NULL || (drvname) == NULL || (drvargs == NULL))
+		return -1;
+
+	*drvname = strdup(devargs_str);
+	if (*drvname == NULL)
+		return -1;
+
+	/* set the first ',' to '\0' to split name and arguments */
+	sep = strchr(*drvname, ',');
+	if (sep != NULL) {
+		sep[0] = '\0';
+		*drvargs = strdup(sep + 1);
+	} else {
+		*drvargs = strdup("");
+	}
+
+	if (*drvargs == NULL) {
+		free(*drvname);
+		*drvname = NULL;
+		return -1;
+	}
+	return 0;
+}
+
+static int
+bus_name_cmp(const struct rte_bus *bus, const void *name)
+{
+	return strncmp(bus->name, name, strlen(bus->name));
+}
+
 /* store a whitelist parameter for later parsing */
 int
 rte_eal_devargs_add(enum rte_devtype devtype, const char *devargs_str)
 {
 	struct rte_devargs *devargs = NULL;
-	char *buf = NULL;
-	char *sep;
+	struct rte_bus *bus = NULL;
+	char *dev = NULL;
+	const char *devname;
 	int ret;
 
 	/* use malloc instead of rte_malloc as it's called early at init */
 	devargs = malloc(sizeof(*devargs));
-	if (devargs == NULL) {
-		RTE_LOG(ERR, EAL, "cannot allocate devargs\n");
+	if (devargs == NULL)
 		goto fail;
-	}
+
 	memset(devargs, 0, sizeof(*devargs));
 	devargs->type = devtype;
 
-	buf = strdup(devargs_str);
-	if (buf == NULL) {
-		RTE_LOG(ERR, EAL, "cannot allocate temp memory for devargs\n");
+	if (rte_eal_parse_devargs_str(devargs_str, &dev, &devargs->args))
 		goto fail;
-	}
-
-	/* set the first ',' to '\0' to split name and arguments */
-	sep = strchr(buf, ',');
-	if (sep != NULL) {
-		sep[0] = '\0';
-		devargs->args = strdup(sep + 1);
-		if (devargs->args == NULL) {
-			RTE_LOG(ERR, EAL, "cannot allocate for devargs args\n");
+	devname = dev;
+	do {
+		bus = rte_bus_find(bus, bus_name_cmp, dev);
+		if (bus == NULL)
+			break;
+		devname = dev + strlen(bus->name) + 1;
+		if (rte_bus_find_by_device_name(devname) == bus)
+			break;
+		devname = dev;
+	} while (1);
+	if (bus == NULL) {
+		bus = rte_bus_find_by_device_name(devname);
+		if (bus == NULL) {
+			fprintf(stderr, "ERROR: failed to parse bus info from device declaration\n");
 			goto fail;
 		}
 	}
+	devargs->bus = bus;
 
 	switch (devargs->type) {
 	case RTE_DEVTYPE_WHITELISTED_PCI:
 	case RTE_DEVTYPE_BLACKLISTED_PCI:
 		/* try to parse pci identifier */
-		if (eal_parse_pci_BDF(buf, &devargs->pci.addr) != 0 &&
-		    eal_parse_pci_DomBDF(buf, &devargs->pci.addr) != 0) {
-			RTE_LOG(ERR, EAL, "invalid PCI identifier <%s>\n", buf);
+		if (bus->parse(devname, &devargs->pci.addr) != 0)
 			goto fail;
-		}
+
 		break;
 	case RTE_DEVTYPE_VIRTUAL:
 		/* save driver name */
-		ret = snprintf(devargs->virtual.drv_name,
-			       sizeof(devargs->virtual.drv_name), "%s", buf);
-		if (ret < 0 || ret >= (int)sizeof(devargs->virtual.drv_name)) {
-			RTE_LOG(ERR, EAL, "driver name too large: <%s>\n", buf);
+		ret = snprintf(devargs->virt.drv_name,
+			       sizeof(devargs->virt.drv_name), "%s", devname);
+		if (ret < 0 || ret >= (int)sizeof(devargs->virt.drv_name))
 			goto fail;
-		}
+
 		break;
 	}
+	if (devargs->type == RTE_DEVTYPE_WHITELISTED_PCI) {
+		if (bus->conf.scan_mode == RTE_BUS_SCAN_UNDEFINED) {
+			bus->conf.scan_mode = RTE_BUS_SCAN_WHITELIST;
+		} else if (bus->conf.scan_mode == RTE_BUS_SCAN_BLACKLIST) {
+			fprintf(stderr, "ERROR: incompatible device type and bus scan mode\n");
+			goto fail;
+		}
+	} else if (devargs->type == RTE_DEVTYPE_BLACKLISTED_PCI) {
+		if (bus->conf.scan_mode == RTE_BUS_SCAN_UNDEFINED) {
+			bus->conf.scan_mode = RTE_BUS_SCAN_BLACKLIST;
+		} else if (bus->conf.scan_mode == RTE_BUS_SCAN_WHITELIST) {
+			fprintf(stderr, "ERROR: incompatible device type and bus scan mode\n");
+			goto fail;
+		}
+	}
 
-	free(buf);
+	free(dev);
 	TAILQ_INSERT_TAIL(&devargs_list, devargs, next);
 	return 0;
 
 fail:
-	if (devargs->args)
+	free(dev);
+	if (devargs) {
 		free(devargs->args);
-	if (buf)
-		free(buf);
-	if (devargs)
 		free(devargs);
+	}
+
 	return -1;
 }
 
@@ -153,7 +209,7 @@ rte_eal_devargs_dump(FILE *f)
 			       devargs->args);
 		else if (devargs->type == RTE_DEVTYPE_VIRTUAL)
 			fprintf(f, "  VIRTUAL %s %s\n",
-			       devargs->virtual.drv_name,
+			       devargs->virt.drv_name,
 			       devargs->args);
 		else
 			fprintf(f, "  UNKNOWN %s\n", devargs->args);