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47 * Functions for NPI initialization, configuration,
50 * <hr>$Revision: 41586 $<hr>
53 #include "cvmx-helper.h"
55 #ifdef CVMX_ENABLE_PKO_FUNCTIONS
58 * Probe a NPI interface and determine the number of ports
59 * connected to it. The NPI interface should still be down
62 * @param interface Interface to probe
64 * @return Number of ports on the interface. Zero to disable.
66 int __cvmx_helper_npi_probe(int interface)
68 #if CVMX_PKO_QUEUES_PER_PORT_PCI > 0
69 if (OCTEON_IS_MODEL(OCTEON_CN38XX) || OCTEON_IS_MODEL(OCTEON_CN58XX))
71 else if (OCTEON_IS_MODEL(OCTEON_CN56XX) && !OCTEON_IS_MODEL(OCTEON_CN56XX_PASS1_X))
72 return 4; /* The packet engines didn't exist before pass 2 */
73 else if (OCTEON_IS_MODEL(OCTEON_CN52XX) && !OCTEON_IS_MODEL(OCTEON_CN52XX_PASS1_X))
74 return 4; /* The packet engines didn't exist before pass 2 */
76 /* Technically CN30XX, CN31XX, and CN50XX contain packet engines, but
77 nobody ever uses them. Since this is the case, we disable them here */
78 else if (OCTEON_IS_MODEL(OCTEON_CN31XX) || OCTEON_IS_MODEL(OCTEON_CN50XX))
80 else if (OCTEON_IS_MODEL(OCTEON_CN30XX))
90 * Bringup and enable a NPI interface. After this call packet
91 * I/O should be fully functional. This is called with IPD
92 * enabled but PKO disabled.
94 * @param interface Interface to bring up
96 * @return Zero on success, negative on failure
98 int __cvmx_helper_npi_enable(int interface)
100 /* On CN50XX, CN52XX, and CN56XX we need to disable length checking
101 so packet < 64 bytes and jumbo frames don't get errors */
102 if (!OCTEON_IS_MODEL(OCTEON_CN3XXX) && !OCTEON_IS_MODEL(OCTEON_CN58XX))
104 int num_ports = cvmx_helper_ports_on_interface(interface);
106 for (port=0; port<num_ports; port++)
108 cvmx_pip_port_cfg_t port_cfg;
109 int ipd_port = cvmx_helper_get_ipd_port(interface, port);
110 port_cfg.u64 = cvmx_read_csr(CVMX_PIP_PRT_CFGX(ipd_port));
111 port_cfg.s.maxerr_en = 0;
112 port_cfg.s.minerr_en = 0;
113 cvmx_write_csr(CVMX_PIP_PRT_CFGX(ipd_port), port_cfg.u64);
117 /* Enables are controlled by the remote host, so nothing to do here */
121 #endif /* CVMX_ENABLE_PKO_FUNCTIONS */