update Intel copyright years to 2014

[dpdk.git] / lib / librte_eal / common / include / rte_pci.h

diff --git a/lib/librte_eal/common/include/rte_pci.h b/lib/librte_eal/common/include/rte_pci.h
index ca94953..83ba5e9 100644 (file)
--- a/lib/librte_eal/common/include/rte_pci.h
+++ b/lib/librte_eal/common/include/rte_pci.h
@@ -1,7 +1,7 @@
 /*-
  *   BSD LICENSE
  * 
- *   Copyright(c) 2010-2013 Intel Corporation. All rights reserved.
+ *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
  *   All rights reserved.
  * 
  *   Redistribution and use in source and binary forms, with or without
@@ -74,7 +74,9 @@
 extern "C" {
 #endif
 
+#include <stdlib.h>
 #include <limits.h>
+#include <errno.h>
 #include <sys/queue.h>
 #include <stdint.h>
 #include <inttypes.h>
@@ -92,6 +94,9 @@ extern struct pci_device_list device_list; /**< Global list of PCI devices. */
 /** Formatting string for PCI device identifier: Ex: 0000:00:01.0 */
 #define PCI_PRI_FMT "%.4"PRIx16":%.2"PRIx8":%.2"PRIx8".%"PRIx8
 
+/** Short formatting string, without domain, for PCI device: Ex: 00:01.0 */
+#define PCI_SHORT_PRI_FMT "%.2"PRIx8":%.2"PRIx8".%"PRIx8
+
 /** Nb. of values in PCI device identifier format string. */
 #define PCI_FMT_NVAL 4
 
@@ -190,6 +195,65 @@ struct rte_pci_driver {
 /** Device driver must be registered several times until failure */
 #define RTE_PCI_DRV_MULTIPLE 0x0002
 
+/**< Internal use only - Macro used by pci addr parsing functions **/
+#define GET_PCIADDR_FIELD(in, fd, lim, dlm)                   \
+do {                                                               \
+       unsigned long val;                                      \
+       char *end;                                              \
+       errno = 0;                                              \
+       val = strtoul((in), &end, 16);                          \
+       if (errno != 0 || end[0] != (dlm) || val > (lim))       \
+               return (-EINVAL);                               \
+       (fd) = (typeof (fd))val;                                \
+       (in) = end + 1;                                         \
+} while(0)
+
+/**
+ * Utility function to produce a PCI Bus-Device-Function value
+ * given a string representation. Assumes that the BDF is provided without
+ * a domain prefix (i.e. domain returned is always 0)
+ *
+ * @param input
+ *     The input string to be parsed. Should have the format XX:XX.X
+ * @param dev_addr
+ *     The PCI Bus-Device-Function address to be returned. Domain will always be
+ *     returned as 0
+ * @return
+ *  0 on success, negative on error.
+ */
+static inline int
+eal_parse_pci_BDF(const char *input, struct rte_pci_addr *dev_addr)
+{
+       dev_addr->domain = 0;
+       GET_PCIADDR_FIELD(input, dev_addr->bus, UINT8_MAX, ':');
+       GET_PCIADDR_FIELD(input, dev_addr->devid, UINT8_MAX, '.');
+       GET_PCIADDR_FIELD(input, dev_addr->function, UINT8_MAX, 0);
+       return (0);
+}
+
+/**
+ * Utility function to produce a PCI Bus-Device-Function value
+ * given a string representation. Assumes that the BDF is provided including
+ * a domain prefix.
+ *
+ * @param input
+ *     The input string to be parsed. Should have the format XXXX:XX:XX.X
+ * @param dev_addr
+ *     The PCI Bus-Device-Function address to be returned
+ * @return
+ *  0 on success, negative on error.
+ */
+static inline int
+eal_parse_pci_DomBDF(const char *input, struct rte_pci_addr *dev_addr)
+{
+       GET_PCIADDR_FIELD(input, dev_addr->domain, UINT16_MAX, ':');
+       GET_PCIADDR_FIELD(input, dev_addr->bus, UINT8_MAX, ':');
+       GET_PCIADDR_FIELD(input, dev_addr->devid, UINT8_MAX, '.');
+       GET_PCIADDR_FIELD(input, dev_addr->function, UINT8_MAX, 0);
+       return (0);
+}
+#undef GET_PCIADDR_FIELD
+
 /**
  * Probe the PCI bus for registered drivers.
  *