1 /***********************license start********* 1 /***********************license start***************
2 * Author: Cavium Networks 2 * Author: Cavium Networks
3 * 3 *
4 * Contact: support@caviumnetworks.com 4 * Contact: support@caviumnetworks.com
5 * This file is part of the OCTEON SDK 5 * This file is part of the OCTEON SDK
6 * 6 *
7 * Copyright (C) 2003-2018 Cavium, Inc. 7 * Copyright (C) 2003-2018 Cavium, Inc.
8 * 8 *
9 * This file is free software; you can redistr 9 * This file is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Publi 10 * it under the terms of the GNU General Public License, Version 2, as
11 * published by the Free Software Foundation. 11 * published by the Free Software Foundation.
12 * 12 *
13 * This file is distributed in the hope that i 13 * This file is distributed in the hope that it will be useful, but
14 * AS-IS and WITHOUT ANY WARRANTY; without eve 14 * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
15 * of MERCHANTABILITY or FITNESS FOR A PARTICU 15 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
16 * NONINFRINGEMENT. See the GNU General Publi 16 * NONINFRINGEMENT. See the GNU General Public License for more
17 * details. 17 * details.
18 * 18 *
19 * You should have received a copy of the GNU 19 * You should have received a copy of the GNU General Public License
20 * along with this file; if not, write to the 20 * along with this file; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin St, Fifth Flo 21 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 * or visit http://www.gnu.org/licenses/. 22 * or visit http://www.gnu.org/licenses/.
23 * 23 *
24 * This file may also be available under a dif 24 * This file may also be available under a different license from Cavium.
25 * Contact Cavium Networks for more informatio 25 * Contact Cavium Networks for more information
26 ***********************license end*********** 26 ***********************license end**************************************/
27 27
28 /* 28 /*
29 * Functions for SPI initialization, configura 29 * Functions for SPI initialization, configuration,
30 * and monitoring. 30 * and monitoring.
31 */ 31 */
32 #include <asm/octeon/octeon.h> 32 #include <asm/octeon/octeon.h>
33 33
34 #include <asm/octeon/cvmx-config.h> 34 #include <asm/octeon/cvmx-config.h>
35 #include <asm/octeon/cvmx-spi.h> 35 #include <asm/octeon/cvmx-spi.h>
36 #include <asm/octeon/cvmx-helper.h> 36 #include <asm/octeon/cvmx-helper.h>
37 37
38 #include <asm/octeon/cvmx-pip-defs.h> 38 #include <asm/octeon/cvmx-pip-defs.h>
39 #include <asm/octeon/cvmx-pko-defs.h> 39 #include <asm/octeon/cvmx-pko-defs.h>
40 #include <asm/octeon/cvmx-spxx-defs.h> 40 #include <asm/octeon/cvmx-spxx-defs.h>
41 #include <asm/octeon/cvmx-stxx-defs.h> 41 #include <asm/octeon/cvmx-stxx-defs.h>
42 42
43 /* 43 /*
44 * CVMX_HELPER_SPI_TIMEOUT is used to determin 44 * CVMX_HELPER_SPI_TIMEOUT is used to determine how long the SPI
45 * initialization routines wait for SPI traini 45 * initialization routines wait for SPI training. You can override the
46 * value using executive-config.h if necessary 46 * value using executive-config.h if necessary.
47 */ 47 */
48 #ifndef CVMX_HELPER_SPI_TIMEOUT 48 #ifndef CVMX_HELPER_SPI_TIMEOUT
49 #define CVMX_HELPER_SPI_TIMEOUT 10 49 #define CVMX_HELPER_SPI_TIMEOUT 10
50 #endif 50 #endif
51 51
52 int __cvmx_helper_spi_enumerate(int interface) 52 int __cvmx_helper_spi_enumerate(int interface)
53 { 53 {
54 if ((cvmx_sysinfo_get()->board_type != 54 if ((cvmx_sysinfo_get()->board_type != CVMX_BOARD_TYPE_SIM) &&
55 cvmx_spi4000_is_present(interface) 55 cvmx_spi4000_is_present(interface)) {
56 return 10; 56 return 10;
57 } else { 57 } else {
58 return 16; 58 return 16;
59 } 59 }
60 } 60 }
61 61
62 /** 62 /**
63 * Probe a SPI interface and determine the num 63 * Probe a SPI interface and determine the number of ports
64 * connected to it. The SPI interface should s 64 * connected to it. The SPI interface should still be down after
65 * this call. 65 * this call.
66 * 66 *
67 * @interface: Interface to probe 67 * @interface: Interface to probe
68 * 68 *
69 * Returns Number of ports on the interface. Z 69 * Returns Number of ports on the interface. Zero to disable.
70 */ 70 */
71 int __cvmx_helper_spi_probe(int interface) 71 int __cvmx_helper_spi_probe(int interface)
72 { 72 {
73 int num_ports = 0; 73 int num_ports = 0;
74 74
75 if ((cvmx_sysinfo_get()->board_type != 75 if ((cvmx_sysinfo_get()->board_type != CVMX_BOARD_TYPE_SIM) &&
76 cvmx_spi4000_is_present(interface) 76 cvmx_spi4000_is_present(interface)) {
77 num_ports = 10; 77 num_ports = 10;
78 } else { 78 } else {
79 union cvmx_pko_reg_crc_enable 79 union cvmx_pko_reg_crc_enable enable;
80 num_ports = 16; 80 num_ports = 16;
81 /* 81 /*
82 * Unlike the SPI4000, most SP 82 * Unlike the SPI4000, most SPI devices don't
83 * automatically put on the L2 83 * automatically put on the L2 CRC. For everything
84 * except for the SPI4000 have 84 * except for the SPI4000 have PKO append the L2 CRC
85 * to the packet. 85 * to the packet.
86 */ 86 */
87 enable.u64 = cvmx_read_csr(CVM 87 enable.u64 = cvmx_read_csr(CVMX_PKO_REG_CRC_ENABLE);
88 enable.s.enable |= 0xffff << ( 88 enable.s.enable |= 0xffff << (interface * 16);
89 cvmx_write_csr(CVMX_PKO_REG_CR 89 cvmx_write_csr(CVMX_PKO_REG_CRC_ENABLE, enable.u64);
90 } 90 }
91 __cvmx_helper_setup_gmx(interface, num 91 __cvmx_helper_setup_gmx(interface, num_ports);
92 return num_ports; 92 return num_ports;
93 } 93 }
94 94
95 /** 95 /**
96 * Bringup and enable a SPI interface. After t 96 * Bringup and enable a SPI interface. After this call packet I/O
97 * should be fully functional. This is called 97 * should be fully functional. This is called with IPD enabled but
98 * PKO disabled. 98 * PKO disabled.
99 * 99 *
100 * @interface: Interface to bring up 100 * @interface: Interface to bring up
101 * 101 *
102 * Returns Zero on success, negative on failur 102 * Returns Zero on success, negative on failure
103 */ 103 */
104 int __cvmx_helper_spi_enable(int interface) 104 int __cvmx_helper_spi_enable(int interface)
105 { 105 {
106 /* 106 /*
107 * Normally the ethernet L2 CRC is che 107 * Normally the ethernet L2 CRC is checked and stripped in the
108 * GMX block. When you are using SPI, 108 * GMX block. When you are using SPI, this isn' the case and
109 * IPD needs to check the L2 CRC. 109 * IPD needs to check the L2 CRC.
110 */ 110 */
111 int num_ports = cvmx_helper_ports_on_i 111 int num_ports = cvmx_helper_ports_on_interface(interface);
112 int ipd_port; 112 int ipd_port;
113 for (ipd_port = interface * 16; ipd_po 113 for (ipd_port = interface * 16; ipd_port < interface * 16 + num_ports;
114 ipd_port++) { 114 ipd_port++) {
115 union cvmx_pip_prt_cfgx port_c 115 union cvmx_pip_prt_cfgx port_config;
116 port_config.u64 = cvmx_read_cs 116 port_config.u64 = cvmx_read_csr(CVMX_PIP_PRT_CFGX(ipd_port));
117 port_config.s.crc_en = 1; 117 port_config.s.crc_en = 1;
118 cvmx_write_csr(CVMX_PIP_PRT_CF 118 cvmx_write_csr(CVMX_PIP_PRT_CFGX(ipd_port), port_config.u64);
119 } 119 }
120 120
121 if (cvmx_sysinfo_get()->board_type != 121 if (cvmx_sysinfo_get()->board_type != CVMX_BOARD_TYPE_SIM) {
122 cvmx_spi_start_interface(inter 122 cvmx_spi_start_interface(interface, CVMX_SPI_MODE_DUPLEX,
123 CVMX_ 123 CVMX_HELPER_SPI_TIMEOUT, num_ports);
124 if (cvmx_spi4000_is_present(in 124 if (cvmx_spi4000_is_present(interface))
125 cvmx_spi4000_initializ 125 cvmx_spi4000_initialize(interface);
126 } 126 }
127 __cvmx_interrupt_spxx_int_msk_enable(i 127 __cvmx_interrupt_spxx_int_msk_enable(interface);
128 __cvmx_interrupt_stxx_int_msk_enable(i 128 __cvmx_interrupt_stxx_int_msk_enable(interface);
129 __cvmx_interrupt_gmxx_enable(interface 129 __cvmx_interrupt_gmxx_enable(interface);
130 return 0; 130 return 0;
131 } 131 }
132 132
133 /** 133 /**
134 * Return the link state of an IPD/PKO port as 134 * Return the link state of an IPD/PKO port as returned by
135 * auto negotiation. The result of this functi 135 * auto negotiation. The result of this function may not match
136 * Octeon's link config if auto negotiation ha 136 * Octeon's link config if auto negotiation has changed since
137 * the last call to cvmx_helper_link_set(). 137 * the last call to cvmx_helper_link_set().
138 * 138 *
139 * @ipd_port: IPD/PKO port to query 139 * @ipd_port: IPD/PKO port to query
140 * 140 *
141 * Returns Link state 141 * Returns Link state
142 */ 142 */
143 union cvmx_helper_link_info __cvmx_helper_spi_ 143 union cvmx_helper_link_info __cvmx_helper_spi_link_get(int ipd_port)
144 { 144 {
145 union cvmx_helper_link_info result; 145 union cvmx_helper_link_info result;
146 int interface = cvmx_helper_get_interf 146 int interface = cvmx_helper_get_interface_num(ipd_port);
147 int index = cvmx_helper_get_interface_ 147 int index = cvmx_helper_get_interface_index_num(ipd_port);
148 result.u64 = 0; 148 result.u64 = 0;
149 149
150 if (cvmx_sysinfo_get()->board_type == 150 if (cvmx_sysinfo_get()->board_type == CVMX_BOARD_TYPE_SIM) {
151 /* The simulator gives you a s 151 /* The simulator gives you a simulated full duplex link */
152 result.s.link_up = 1; 152 result.s.link_up = 1;
153 result.s.full_duplex = 1; 153 result.s.full_duplex = 1;
154 result.s.speed = 10000; 154 result.s.speed = 10000;
155 } else if (cvmx_spi4000_is_present(int 155 } else if (cvmx_spi4000_is_present(interface)) {
156 union cvmx_gmxx_rxx_rx_inbnd i 156 union cvmx_gmxx_rxx_rx_inbnd inband =
157 cvmx_spi4000_check_speed(i 157 cvmx_spi4000_check_speed(interface, index);
158 result.s.link_up = inband.s.st 158 result.s.link_up = inband.s.status;
159 result.s.full_duplex = inband. 159 result.s.full_duplex = inband.s.duplex;
160 switch (inband.s.speed) { 160 switch (inband.s.speed) {
161 case 0: /* 10 Mbps */ 161 case 0: /* 10 Mbps */
162 result.s.speed = 10; 162 result.s.speed = 10;
163 break; 163 break;
164 case 1: /* 100 Mbps */ 164 case 1: /* 100 Mbps */
165 result.s.speed = 100; 165 result.s.speed = 100;
166 break; 166 break;
167 case 2: /* 1 Gbps */ 167 case 2: /* 1 Gbps */
168 result.s.speed = 1000; 168 result.s.speed = 1000;
169 break; 169 break;
170 case 3: /* Illegal */ 170 case 3: /* Illegal */
171 result.s.speed = 0; 171 result.s.speed = 0;
172 result.s.link_up = 0; 172 result.s.link_up = 0;
173 break; 173 break;
174 } 174 }
175 } else { 175 } else {
176 /* For generic SPI we can't de 176 /* For generic SPI we can't determine the link, just return some
177 sane results */ 177 sane results */
178 result.s.link_up = 1; 178 result.s.link_up = 1;
179 result.s.full_duplex = 1; 179 result.s.full_duplex = 1;
180 result.s.speed = 10000; 180 result.s.speed = 10000;
181 } 181 }
182 return result; 182 return result;
183 } 183 }
184 184
185 /** 185 /**
186 * Configure an IPD/PKO port for the specified 186 * Configure an IPD/PKO port for the specified link state. This
187 * function does not influence auto negotiatio 187 * function does not influence auto negotiation at the PHY level.
188 * The passed link state must always match the 188 * The passed link state must always match the link state returned
189 * by cvmx_helper_link_get(). 189 * by cvmx_helper_link_get().
190 * 190 *
191 * @ipd_port: IPD/PKO port to configure 191 * @ipd_port: IPD/PKO port to configure
192 * @link_info: The new link state 192 * @link_info: The new link state
193 * 193 *
194 * Returns Zero on success, negative on failur 194 * Returns Zero on success, negative on failure
195 */ 195 */
196 int __cvmx_helper_spi_link_set(int ipd_port, u 196 int __cvmx_helper_spi_link_set(int ipd_port, union cvmx_helper_link_info link_info)
197 { 197 {
198 /* Nothing to do. If we have a SPI4000 198 /* Nothing to do. If we have a SPI4000 then the setup was already performed
199 by cvmx_spi4000_check_speed(). If n 199 by cvmx_spi4000_check_speed(). If not then there isn't any link
200 info */ 200 info */
201 return 0; 201 return 0;
202 } 202 }
203 203
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.