1 /***********************license start***************
2 * Author: Cavium Networks
3 *
4 * Contact: support@caviumnetworks.com
5 * This file is part of the OCTEON SDK
6 *
7 * Copyright (c) 2003-2008 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 ***********************license end**************************************/
27
28 /*
29 * File defining checks for different Octeon features.
30 */
31
32 #ifndef __OCTEON_FEATURE_H__
33 #define __OCTEON_FEATURE_H__
34 #include <asm/octeon/cvmx-mio-defs.h>
35 #include <asm/octeon/cvmx-rnm-defs.h>
36
37 enum octeon_feature {
38 /* CN68XX uses port kinds for packet interface */
39 OCTEON_FEATURE_PKND,
40 /* CN68XX has different fields in word0 - word2 */
41 OCTEON_FEATURE_CN68XX_WQE,
42 /*
43 * Octeon models in the CN5XXX family and higher support
44 * atomic add instructions to memory (saa/saad).
45 */
46 OCTEON_FEATURE_SAAD,
47 /* Does this Octeon support the ZIP offload engine? */
48 OCTEON_FEATURE_ZIP,
49 OCTEON_FEATURE_DORM_CRYPTO,
50 /* Does this Octeon support PCI express? */
51 OCTEON_FEATURE_PCIE,
52 /* Does this Octeon support SRIOs */
53 OCTEON_FEATURE_SRIO,
54 /* Does this Octeon support Interlaken */
55 OCTEON_FEATURE_ILK,
56 /* Some Octeon models support internal memory for storing
57 * cryptographic keys */
58 OCTEON_FEATURE_KEY_MEMORY,
59 /* Octeon has a LED controller for banks of external LEDs */
60 OCTEON_FEATURE_LED_CONTROLLER,
61 /* Octeon has a trace buffer */
62 OCTEON_FEATURE_TRA,
63 /* Octeon has a management port */
64 OCTEON_FEATURE_MGMT_PORT,
65 /* Octeon has a raid unit */
66 OCTEON_FEATURE_RAID,
67 /* Octeon has a builtin USB */
68 OCTEON_FEATURE_USB,
69 /* Octeon IPD can run without using work queue entries */
70 OCTEON_FEATURE_NO_WPTR,
71 /* Octeon has DFA state machines */
72 OCTEON_FEATURE_DFA,
73 /* Octeon MDIO block supports clause 45 transactions for 10
74 * Gig support */
75 OCTEON_FEATURE_MDIO_CLAUSE_45,
76 /*
77 * CN52XX and CN56XX used a block named NPEI for PCIe
78 * access. Newer chips replaced this with SLI+DPI.
79 */
80 OCTEON_FEATURE_NPEI,
81 OCTEON_FEATURE_HFA,
82 OCTEON_FEATURE_DFM,
83 OCTEON_FEATURE_CIU2,
84 OCTEON_MAX_FEATURE
85 };
86
87 enum octeon_feature_bits {
88 OCTEON_HAS_CRYPTO = 0x0001, /* Crypto acceleration using COP2 */
89 };
90 extern enum octeon_feature_bits __octeon_feature_bits;
91
92 /**
93 * octeon_has_crypto() - Check if this OCTEON has crypto acceleration support.
94 *
95 * Returns: Non-zero if the feature exists. Zero if the feature does not exist.
96 */
octeon_has_crypto(void)97 static inline int octeon_has_crypto(void)
98 {
99 return __octeon_feature_bits & OCTEON_HAS_CRYPTO;
100 }
101
102 /**
103 * Determine if the current Octeon supports a specific feature. These
104 * checks have been optimized to be fairly quick, but they should still
105 * be kept out of fast path code.
106 *
107 * @feature: Feature to check for. This should always be a constant so the
108 * compiler can remove the switch statement through optimization.
109 *
110 * Returns Non zero if the feature exists. Zero if the feature does not
111 * exist.
112 */
octeon_has_feature(enum octeon_feature feature)113 static inline int octeon_has_feature(enum octeon_feature feature)
114 {
115 switch (feature) {
116 case OCTEON_FEATURE_SAAD:
117 return !OCTEON_IS_MODEL(OCTEON_CN3XXX);
118
119 case OCTEON_FEATURE_DORM_CRYPTO:
120 if (OCTEON_IS_MODEL(OCTEON_CN6XXX)) {
121 union cvmx_mio_fus_dat2 fus_2;
122 fus_2.u64 = cvmx_read_csr(CVMX_MIO_FUS_DAT2);
123 return !fus_2.s.nocrypto && !fus_2.s.nomul && fus_2.s.dorm_crypto;
124 } else {
125 return 0;
126 }
127
128 case OCTEON_FEATURE_PCIE:
129 return OCTEON_IS_MODEL(OCTEON_CN56XX)
130 || OCTEON_IS_MODEL(OCTEON_CN52XX)
131 || OCTEON_IS_MODEL(OCTEON_CN6XXX);
132
133 case OCTEON_FEATURE_SRIO:
134 return OCTEON_IS_MODEL(OCTEON_CN63XX)
135 || OCTEON_IS_MODEL(OCTEON_CN66XX);
136
137 case OCTEON_FEATURE_ILK:
138 return (OCTEON_IS_MODEL(OCTEON_CN68XX));
139
140 case OCTEON_FEATURE_KEY_MEMORY:
141 return OCTEON_IS_MODEL(OCTEON_CN38XX)
142 || OCTEON_IS_MODEL(OCTEON_CN58XX)
143 || OCTEON_IS_MODEL(OCTEON_CN56XX)
144 || OCTEON_IS_MODEL(OCTEON_CN6XXX);
145
146 case OCTEON_FEATURE_LED_CONTROLLER:
147 return OCTEON_IS_MODEL(OCTEON_CN38XX)
148 || OCTEON_IS_MODEL(OCTEON_CN58XX)
149 || OCTEON_IS_MODEL(OCTEON_CN56XX);
150
151 case OCTEON_FEATURE_TRA:
152 return !(OCTEON_IS_MODEL(OCTEON_CN30XX)
153 || OCTEON_IS_MODEL(OCTEON_CN50XX));
154 case OCTEON_FEATURE_MGMT_PORT:
155 return OCTEON_IS_MODEL(OCTEON_CN56XX)
156 || OCTEON_IS_MODEL(OCTEON_CN52XX)
157 || OCTEON_IS_MODEL(OCTEON_CN6XXX);
158
159 case OCTEON_FEATURE_RAID:
160 return OCTEON_IS_MODEL(OCTEON_CN56XX)
161 || OCTEON_IS_MODEL(OCTEON_CN52XX)
162 || OCTEON_IS_MODEL(OCTEON_CN6XXX);
163
164 case OCTEON_FEATURE_USB:
165 return !(OCTEON_IS_MODEL(OCTEON_CN38XX)
166 || OCTEON_IS_MODEL(OCTEON_CN58XX));
167
168 case OCTEON_FEATURE_NO_WPTR:
169 return (OCTEON_IS_MODEL(OCTEON_CN56XX)
170 || OCTEON_IS_MODEL(OCTEON_CN52XX)
171 || OCTEON_IS_MODEL(OCTEON_CN6XXX))
172 && !OCTEON_IS_MODEL(OCTEON_CN56XX_PASS1_X)
173 && !OCTEON_IS_MODEL(OCTEON_CN52XX_PASS1_X);
174
175 case OCTEON_FEATURE_MDIO_CLAUSE_45:
176 return !(OCTEON_IS_MODEL(OCTEON_CN3XXX)
177 || OCTEON_IS_MODEL(OCTEON_CN58XX)
178 || OCTEON_IS_MODEL(OCTEON_CN50XX));
179
180 case OCTEON_FEATURE_NPEI:
181 return OCTEON_IS_MODEL(OCTEON_CN56XX)
182 || OCTEON_IS_MODEL(OCTEON_CN52XX);
183
184 case OCTEON_FEATURE_PKND:
185 return OCTEON_IS_MODEL(OCTEON_CN68XX);
186
187 case OCTEON_FEATURE_CN68XX_WQE:
188 return OCTEON_IS_MODEL(OCTEON_CN68XX);
189
190 case OCTEON_FEATURE_CIU2:
191 return OCTEON_IS_MODEL(OCTEON_CN68XX);
192
193 default:
194 break;
195 }
196 return 0;
197 }
198
199 #endif /* __OCTEON_FEATURE_H__ */
200