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49 * Functions for LOOP initialization, configuration,
52 * <hr>$Revision: 49448 $<hr>
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>
60 #include <asm/octeon/cvmx-pip-defs.h>
62 #if !defined(__FreeBSD__) || !defined(_KERNEL)
63 #include "executive-config.h"
64 #include "cvmx-config.h"
65 #ifdef CVMX_ENABLE_PKO_FUNCTIONS
68 #include "cvmx-helper.h"
72 #include "cvmx-helper.h"
75 #ifdef CVMX_ENABLE_PKO_FUNCTIONS
79 * Probe a LOOP interface and determine the number of ports
80 * connected to it. The LOOP interface should still be down
83 * @param interface Interface to probe
85 * @return Number of ports on the interface. Zero to disable.
87 int __cvmx_helper_loop_probe(int interface)
89 cvmx_ipd_sub_port_fcs_t ipd_sub_port_fcs;
93 /* We need to disable length checking so packet < 64 bytes and jumbo
94 frames don't get errors */
95 for (port=0; port<num_ports; port++)
97 cvmx_pip_prt_cfgx_t port_cfg;
98 int ipd_port = cvmx_helper_get_ipd_port(interface, port);
99 port_cfg.u64 = cvmx_read_csr(CVMX_PIP_PRT_CFGX(ipd_port));
100 port_cfg.s.maxerr_en = 0;
101 port_cfg.s.minerr_en = 0;
102 cvmx_write_csr(CVMX_PIP_PRT_CFGX(ipd_port), port_cfg.u64);
105 /* Disable FCS stripping for loopback ports */
106 ipd_sub_port_fcs.u64 = cvmx_read_csr(CVMX_IPD_SUB_PORT_FCS);
107 ipd_sub_port_fcs.s.port_bit2 = 0;
108 cvmx_write_csr(CVMX_IPD_SUB_PORT_FCS, ipd_sub_port_fcs.u64);
115 * Bringup and enable a LOOP interface. After this call packet
116 * I/O should be fully functional. This is called with IPD
117 * enabled but PKO disabled.
119 * @param interface Interface to bring up
121 * @return Zero on success, negative on failure
123 int __cvmx_helper_loop_enable(int interface)
129 #endif /* CVMX_ENABLE_PKO_FUNCTIONS */