octeon-feature.h revision 215990 
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39
40
41
42
43
44
45/**
46 * @file
47 *
48 * File defining checks for different Octeon features.
49 *
50 * <hr>$Revision: 30468 $<hr>
51 */
52
53#ifndef __OCTEON_FEATURE_H__
54#define __OCTEON_FEATURE_H__
55
56#ifdef	__cplusplus
57extern "C" {
58#endif
59
60typedef enum
61{
62    OCTEON_FEATURE_SAAD,        /**<  Octeon models in the CN5XXX family and higher support atomic add instructions to memory (saa/saad) */
63    OCTEON_FEATURE_ZIP,         /**<  Does this Octeon support the ZIP offload engine? */
64    OCTEON_FEATURE_CRYPTO,      /**<  Does this Octeon support crypto acceleration using COP2? */
65    OCTEON_FEATURE_DORM_CRYPTO, /**<  Can crypto be enabled by calling cvmx_crypto_dormant_enable()? */
66    OCTEON_FEATURE_PCIE,        /**<  Does this Octeon support PCI express? */
67    OCTEON_FEATURE_SRIO,	/**<  Does this Octeon support SRIOs */
68    OCTEON_FEATURE_KEY_MEMORY,  /**<  Some Octeon models support internal memory for storing cryptographic keys */
69    OCTEON_FEATURE_LED_CONTROLLER, /**<  Octeon has a LED controller for banks of external LEDs */
70    OCTEON_FEATURE_TRA,         /**<  Octeon has a trace buffer */
71    OCTEON_FEATURE_MGMT_PORT,   /**<  Octeon has a management port */
72    OCTEON_FEATURE_RAID,        /**<  Octeon has a raid unit */
73    OCTEON_FEATURE_USB,         /**<  Octeon has a builtin USB */
74    OCTEON_FEATURE_NO_WPTR,     /**<  Octeon IPD can run without using work queue entries */
75    OCTEON_FEATURE_DFA,         /**<  Octeon has DFA state machines */
76    OCTEON_FEATURE_MDIO_CLAUSE_45,     /**<  Octeon MDIO block supports clause 45 transactions for 10 Gig support */
77    OCTEON_FEATURE_NPEI,        /**<  CN52XX and CN56XX used a block named NPEI for PCIe access. Newer chips replaced this with SLI+DPI */
78} octeon_feature_t;
79
80/**
81 * Determine if the current Octeon supports a specific feature. These
82 * checks have been optimized to be fairly quick, but they should still
83 * be kept out of fast path code.
84 *
85 * @param feature Feature to check for. This should always be a constant so the
86 *                compiler can remove the switch statement through optimization.
87 *
88 * @return Non zero if the feature exists. Zero if the feature does not
89 *         exist.
90 */
91static inline int octeon_has_feature(octeon_feature_t feature)
92{
93    switch (feature)
94    {
95        case OCTEON_FEATURE_SAAD:
96            return !OCTEON_IS_MODEL(OCTEON_CN3XXX);
97
98        case OCTEON_FEATURE_ZIP:
99            if (OCTEON_IS_MODEL(OCTEON_CN30XX) || OCTEON_IS_MODEL(OCTEON_CN50XX) || OCTEON_IS_MODEL(OCTEON_CN52XX))
100                return 0;
101            else
102                return !cvmx_fuse_read(121);
103
104        case OCTEON_FEATURE_CRYPTO:
105	    if (OCTEON_IS_MODEL(OCTEON_CN6XXX)) {
106                cvmx_mio_fus_dat2_t fus_2;
107                fus_2.u64 = cvmx_read_csr(CVMX_MIO_FUS_DAT2);
108                if (fus_2.s.nocrypto || fus_2.s.nomul) {
109                    return 0;
110                } else if (!fus_2.s.dorm_crypto) {
111                    return 1;
112                } else {
113                    cvmx_rnm_ctl_status_t st;
114                    st.u64 = cvmx_read_csr(CVMX_RNM_CTL_STATUS);
115                    return st.s.eer_val;
116                }
117            } else {
118                return !cvmx_fuse_read(90);
119            }
120
121        case OCTEON_FEATURE_DORM_CRYPTO:
122            if (OCTEON_IS_MODEL(OCTEON_CN6XXX)) {
123                cvmx_mio_fus_dat2_t fus_2;
124                fus_2.u64 = cvmx_read_csr(CVMX_MIO_FUS_DAT2);
125                return !fus_2.s.nocrypto && !fus_2.s.nomul && fus_2.s.dorm_crypto;
126            } else {
127                return 0;
128            }
129
130        case OCTEON_FEATURE_PCIE:
131            return (OCTEON_IS_MODEL(OCTEON_CN56XX) || OCTEON_IS_MODEL(OCTEON_CN52XX) || OCTEON_IS_MODEL(OCTEON_CN6XXX));
132
133	case OCTEON_FEATURE_SRIO:
134	    return (OCTEON_IS_MODEL(OCTEON_CN6XXX));
135
136        case OCTEON_FEATURE_KEY_MEMORY:
137            return OCTEON_IS_MODEL(OCTEON_CN38XX) || OCTEON_IS_MODEL(OCTEON_CN58XX) || OCTEON_IS_MODEL(OCTEON_CN56XX) || OCTEON_IS_MODEL(OCTEON_CN6XXX);
138
139        case OCTEON_FEATURE_LED_CONTROLLER:
140            return OCTEON_IS_MODEL(OCTEON_CN38XX) || OCTEON_IS_MODEL(OCTEON_CN58XX) || OCTEON_IS_MODEL(OCTEON_CN56XX);
141
142        case OCTEON_FEATURE_TRA:
143            return !(OCTEON_IS_MODEL(OCTEON_CN30XX) || OCTEON_IS_MODEL(OCTEON_CN50XX));
144        case OCTEON_FEATURE_MGMT_PORT:
145            return OCTEON_IS_MODEL(OCTEON_CN56XX) || OCTEON_IS_MODEL(OCTEON_CN52XX) || OCTEON_IS_MODEL(OCTEON_CN6XXX);
146
147        case OCTEON_FEATURE_RAID:
148            return OCTEON_IS_MODEL(OCTEON_CN56XX) || OCTEON_IS_MODEL(OCTEON_CN52XX) || OCTEON_IS_MODEL(OCTEON_CN6XXX);
149
150        case OCTEON_FEATURE_USB:
151            return !(OCTEON_IS_MODEL(OCTEON_CN38XX) || OCTEON_IS_MODEL(OCTEON_CN58XX));
152
153        case OCTEON_FEATURE_NO_WPTR:
154            return (OCTEON_IS_MODEL(OCTEON_CN56XX) || OCTEON_IS_MODEL(OCTEON_CN52XX) || OCTEON_IS_MODEL(OCTEON_CN6XXX)) &&
155                    !OCTEON_IS_MODEL(OCTEON_CN56XX_PASS1_X) && !OCTEON_IS_MODEL(OCTEON_CN52XX_PASS1_X);
156
157        case OCTEON_FEATURE_DFA:
158            if (!OCTEON_IS_MODEL(OCTEON_CN38XX) && !OCTEON_IS_MODEL(OCTEON_CN31XX) && !OCTEON_IS_MODEL(OCTEON_CN58XX))
159                return 0;
160            else if (OCTEON_IS_MODEL(OCTEON_CN3020))
161                return 0;
162            else
163                return !cvmx_fuse_read(120);
164
165        case OCTEON_FEATURE_MDIO_CLAUSE_45:
166            return !(OCTEON_IS_MODEL(OCTEON_CN3XXX) || OCTEON_IS_MODEL(OCTEON_CN58XX) || OCTEON_IS_MODEL(OCTEON_CN50XX));
167
168        case OCTEON_FEATURE_NPEI:
169            return (OCTEON_IS_MODEL(OCTEON_CN56XX) || OCTEON_IS_MODEL(OCTEON_CN52XX));
170    }
171    return 0;
172}
173
174#ifdef	__cplusplus
175}
176#endif
177
178#endif    /* __OCTEON_FEATURE_H__ */
179