1 /***********************license start***************
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3 * reserved.
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5 *
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13 * * Redistributions in binary form must reproduce the above
14 * copyright notice, this list of conditions and the following
15 * disclaimer in the documentation and/or other materials provided
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38 ***********************license end**************************************/
39
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44
45
46 /**
47 * @file
48 *
49 * Functions for NPI initialization, configuration,
50 * and monitoring.
51 *
52 * <hr>$Revision: 70030 $<hr>
53 */
54 #ifdef CVMX_BUILD_FOR_LINUX_KERNEL
55 #include <asm/octeon/cvmx.h>
56 #include <asm/octeon/cvmx-config.h>
57 #ifdef CVMX_ENABLE_PKO_FUNCTIONS
58 #include <asm/octeon/cvmx-helper.h>
59 #include <asm/octeon/cvmx-pko.h>
60 #include <asm/octeon/cvmx-pexp-defs.h>
61 #include <asm/octeon/cvmx-sli-defs.h>
62 #endif
63 #include <asm/octeon/cvmx-pip-defs.h>
64 #else
65 #if !defined(__FreeBSD__) || !defined(_KERNEL)
66 #include "executive-config.h"
67 #include "cvmx-config.h"
68 #include "cvmx.h"
69 #include "cvmx-pko.h"
70 #ifdef CVMX_ENABLE_PKO_FUNCTIONS
71 #include "cvmx-helper.h"
72 #endif
73 #else
74 #include "cvmx.h"
75 #include "cvmx-pko.h"
76 #include "cvmx-helper.h"
77 #endif
78 #endif
79
80 #ifdef CVMX_ENABLE_PKO_FUNCTIONS
81
82 /**
83 * @INTERNAL
84 * Probe a NPI interface and determine the number of ports
85 * connected to it. The NPI interface should still be down
86 * after this call.
87 *
88 * @param interface Interface to probe
89 *
90 * @return Number of ports on the interface. Zero to disable.
91 */
__cvmx_helper_npi_probe(int interface)92 int __cvmx_helper_npi_probe(int interface)
93 {
94 #if CVMX_PKO_QUEUES_PER_PORT_PCI > 0
95 if (OCTEON_IS_MODEL(OCTEON_CN68XX))
96 return 32;
97 #if 0
98 /* Technically CN30XX, CN31XX, and CN50XX contain packet engines, but
99 nobody ever uses them. Since this is the case, we disable them here */
100 else if (OCTEON_IS_MODEL(OCTEON_CN31XX) || OCTEON_IS_MODEL(OCTEON_CN50XX))
101 return 2;
102 else if (OCTEON_IS_MODEL(OCTEON_CN30XX))
103 return 1;
104 #endif
105 else if (!(OCTEON_IS_MODEL(OCTEON_CN52XX_PASS1_X) || OCTEON_IS_MODEL(OCTEON_CN56XX_PASS1_X) || OCTEON_IS_MODEL(OCTEON_CN31XX) || OCTEON_IS_MODEL(OCTEON_CN50XX) || OCTEON_IS_MODEL(OCTEON_CN30XX)))
106 return 4; /* The packet engines didn't exist before cn56xx pass 2 */
107 #endif
108 return 0;
109 }
110
111
112 /**
113 * @INTERNAL
114 * Bringup and enable a NPI interface. After this call packet
115 * I/O should be fully functional. This is called with IPD
116 * enabled but PKO disabled.
117 *
118 * @param interface Interface to bring up
119 *
120 * @return Zero on success, negative on failure
121 */
__cvmx_helper_npi_enable(int interface)122 int __cvmx_helper_npi_enable(int interface)
123 {
124 int num_ports = cvmx_helper_ports_on_interface(interface);
125
126 /* On CN50XX, CN52XX, and CN56XX we need to disable length checking
127 so packet < 64 bytes and jumbo frames don't get errors */
128 if (!OCTEON_IS_MODEL(OCTEON_CN3XXX) && !OCTEON_IS_MODEL(OCTEON_CN58XX))
129 {
130 int port;
131 for (port=0; port<num_ports; port++)
132 {
133 cvmx_pip_prt_cfgx_t port_cfg;
134 int ipd_port = (OCTEON_IS_MODEL(OCTEON_CN68XX)) ?
135 cvmx_helper_get_pknd(interface, port) :
136 cvmx_helper_get_ipd_port(interface, port);
137 port_cfg.u64 = cvmx_read_csr(CVMX_PIP_PRT_CFGX(ipd_port));
138 port_cfg.s.lenerr_en = 0;
139 port_cfg.s.maxerr_en = 0;
140 port_cfg.s.minerr_en = 0;
141 cvmx_write_csr(CVMX_PIP_PRT_CFGX(ipd_port), port_cfg.u64);
142
143 if (OCTEON_IS_MODEL(OCTEON_CN68XX))
144 {
145 /*
146 * Set up pknd and bpid
147 */
148 cvmx_sli_portx_pkind_t config;
149 config.u64 = cvmx_read_csr(CVMX_PEXP_SLI_PORTX_PKIND(port));
150 config.s.bpkind = cvmx_helper_get_bpid(interface, port);
151 config.s.pkind = cvmx_helper_get_pknd(interface, port);
152 cvmx_write_csr(CVMX_PEXP_SLI_PORTX_PKIND(port), config.u64);
153 }
154 }
155 }
156
157 if (OCTEON_IS_MODEL(OCTEON_CN68XX))
158 {
159 /*
160 * Set up pko pipes.
161 */
162 cvmx_sli_tx_pipe_t config;
163 config.u64 = cvmx_read_csr(CVMX_PEXP_SLI_TX_PIPE);
164 config.s.base = __cvmx_pko_get_pipe (interface, 0);
165 #ifdef CVMX_HELPER_NPI_MAX_PIPES
166 config.s.nump = CVMX_HELPER_NPI_MAX_PIPES;
167 #else
168 config.s.nump = num_ports;
169 #endif
170 cvmx_write_csr(CVMX_PEXP_SLI_TX_PIPE, config.u64);
171 }
172
173
174 /* Enables are controlled by the remote host, so nothing to do here */
175 return 0;
176 }
177
178 #endif /* CVMX_ENABLE_PKO_FUNCTIONS */
179
180