1 /**********************************************************************
2 * Author: Cavium Networks
3 *
4 * Contact: support@caviumnetworks.com
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
28 #define DEBUGPRINT(format, ...) do { if (printk_ratelimit()) \
29 printk(format, ##__VA_ARGS__); \
30 } while (0)
31
32 /**
33 * Given a packet data address, return a pointer to the
34 * beginning of the packet buffer.
35 *
36 * @packet_ptr: Packet data hardware address
37 * Returns Packet buffer pointer
38 */
39 static inline void *cvm_oct_get_buffer_ptr(union cvmx_buf_ptr packet_ptr)
40 {
41 return cvmx_phys_to_ptr(((packet_ptr.s.addr >> 7) - packet_ptr.s.back)
42 << 7);
43 }
44
45 /**
46 * Given an IPD/PKO port number, return the logical interface it is
47 * on.
48 *
49 * @ipd_port: Port to check
50 *
51 * Returns Logical interface
52 */
53 static inline int INTERFACE(int ipd_port)
54 {
55 if (ipd_port < 32) /* Interface 0 or 1 for RGMII,GMII,SPI, etc */
56 return ipd_port >> 4;
57 else if (ipd_port < 36) /* Interface 2 for NPI */
58 return 2;
59 else if (ipd_port < 40) /* Interface 3 for loopback */
60 return 3;
61 else if (ipd_port == 40) /* Non existant interface for POW0 */
62 return 4;
63 else
64 panic("Illegal ipd_port %d passed to INTERFACE\n", ipd_port);
65 }
66
67 /**
68 * Given an IPD/PKO port number, return the port's index on a
69 * logical interface.
70 *
71 * @ipd_port: Port to check
72 *
73 * Returns Index into interface port list
74 */
75 static inline int INDEX(int ipd_port)
76 {
77 if (ipd_port < 32)
78 return ipd_port & 15;
79 else
80 return ipd_port & 3;
81 }
82
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