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49 * Functions for LOOP initialization, configuration,
52 * <hr>$Revision: 70030 $<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
78 int __cvmx_helper_loop_enumerate(int interface)
80 return (OCTEON_IS_MODEL(OCTEON_CN68XX) ? 8 : 4);
85 * Probe a LOOP interface and determine the number of ports
86 * connected to it. The LOOP interface should still be down
89 * @param interface Interface to probe
91 * @return Number of ports on the interface. Zero to disable.
93 int __cvmx_helper_loop_probe(int interface)
95 return __cvmx_helper_loop_enumerate(interface);
101 * Bringup and enable a LOOP interface. After this call packet
102 * I/O should be fully functional. This is called with IPD
103 * enabled but PKO disabled.
105 * @param interface Interface to bring up
107 * @return Zero on success, negative on failure
109 int __cvmx_helper_loop_enable(int interface)
111 cvmx_pip_prt_cfgx_t port_cfg;
112 int num_ports, index;
113 unsigned long offset;
115 num_ports = __cvmx_helper_get_num_ipd_ports(interface);
118 * We need to disable length checking so packet < 64 bytes and jumbo
119 * frames don't get errors
121 for (index = 0; index < num_ports; index++) {
122 offset = ((octeon_has_feature(OCTEON_FEATURE_PKND)) ?
123 cvmx_helper_get_pknd(interface, index) :
124 cvmx_helper_get_ipd_port(interface, index));
126 port_cfg.u64 = cvmx_read_csr(CVMX_PIP_PRT_CFGX(offset));
127 port_cfg.s.maxerr_en = 0;
128 port_cfg.s.minerr_en = 0;
129 cvmx_write_csr(CVMX_PIP_PRT_CFGX(offset), port_cfg.u64);
133 * Disable FCS stripping for loopback ports
135 if (!octeon_has_feature(OCTEON_FEATURE_PKND)) {
136 cvmx_ipd_sub_port_fcs_t ipd_sub_port_fcs;
137 ipd_sub_port_fcs.u64 = cvmx_read_csr(CVMX_IPD_SUB_PORT_FCS);
138 ipd_sub_port_fcs.s.port_bit2 = 0;
139 cvmx_write_csr(CVMX_IPD_SUB_PORT_FCS, ipd_sub_port_fcs.u64);
145 #endif /* CVMX_ENABLE_PKO_FUNCTIONS */