Linux Kernel  3.7.1
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ethernet-util.h
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1 /**********************************************************************
2  * Author: Cavium Networks
3  *
4  * Contact: [email protected]
5  * This file is part of the OCTEON SDK
6  *
7  * Copyright (c) 2003-2007 Cavium Networks
8  *
9  * This file is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License, Version 2, as
11  * published by the Free Software Foundation.
12  *
13  * This file is distributed in the hope that it will be useful, but
14  * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
15  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
16  * NONINFRINGEMENT. See the GNU General Public License for more
17  * details.
18  *
19  * You should have received a copy of the GNU General Public License
20  * along with this file; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22  * or visit http://www.gnu.org/licenses/.
23  *
24  * This file may also be available under a different license from Cavium.
25  * Contact Cavium Networks for more information
26 *********************************************************************/
27 
34 static inline void *cvm_oct_get_buffer_ptr(union cvmx_buf_ptr packet_ptr)
35 {
36  return cvmx_phys_to_ptr(((packet_ptr.s.addr >> 7) - packet_ptr.s.back)
37  << 7);
38 }
39 
46 static inline int INTERFACE(int ipd_port)
47 {
48  if (ipd_port < 32) /* Interface 0 or 1 for RGMII,GMII,SPI, etc */
49  return ipd_port >> 4;
50  else if (ipd_port < 36) /* Interface 2 for NPI */
51  return 2;
52  else if (ipd_port < 40) /* Interface 3 for loopback */
53  return 3;
54  else if (ipd_port == 40) /* Non existent interface for POW0 */
55  return 4;
56  else
57  panic("Illegal ipd_port %d passed to INTERFACE\n", ipd_port);
58 }
59 
66 static inline int INDEX(int ipd_port)
67 {
68  if (ipd_port < 32)
69  return ipd_port & 15;
70  else
71  return ipd_port & 3;
72 }