1 /***********************license start***************
2  * Author: Cavium Networks
3  *
4  * Contact: support@caviumnetworks.com
5  * This file is part of the OCTEON SDK
6  *
7  * Copyright (c) 2003-2008 Cavium Networks
8  *
9  * This file is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License, Version 2, as
11  * published by the Free Software Foundation.
12  *
13  * This file is distributed in the hope that it will be useful, but
14  * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
15  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
16  * NONINFRINGEMENT.  See the GNU General Public License for more
17  * details.
18  *
19  * You should have received a copy of the GNU General Public License
20  * along with this file; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22  * or visit http://www.gnu.org/licenses/.
23  *
24  * This file may also be available under a different license from Cavium.
25  * Contact Cavium Networks for more information
26  ***********************license end**************************************/
27 
28 /*
29  *
30  * Helper functions to abstract board specific data about
31  * network ports from the rest of the cvmx-helper files.
32  */
33 
34 #include <linux/bug.h>
35 #include <asm/octeon/octeon.h>
36 #include <asm/octeon/cvmx-bootinfo.h>
37 
38 #include <asm/octeon/cvmx-config.h>
39 
40 #include <asm/octeon/cvmx-helper.h>
41 #include <asm/octeon/cvmx-helper-util.h>
42 #include <asm/octeon/cvmx-helper-board.h>
43 
44 #include <asm/octeon/cvmx-gmxx-defs.h>
45 #include <asm/octeon/cvmx-asxx-defs.h>
46 
47 /*
48  * Return the MII PHY address associated with the given IPD
49  * port. A result of -1 means there isn't a MII capable PHY
50  * connected to this port. On chips supporting multiple MII
51  * busses the bus number is encoded in bits <15:8>.
52  *
53  * This function must be modified for every new Octeon board.
54  * Internally it uses switch statements based on the cvmx_sysinfo
55  * data to determine board types and revisions. It replies on the
56  * fact that every Octeon board receives a unique board type
57  * enumeration from the bootloader.
58  *
59  * @ipd_port: Octeon IPD port to get the MII address for.
60  *
61  * Returns MII PHY address and bus number or -1.
62  */
63 int cvmx_helper_board_get_mii_address(int ipd_port)
64 {
65 	switch (cvmx_sysinfo_get()->board_type) {
66 	case CVMX_BOARD_TYPE_SIM:
67 		/* Simulator doesn't have MII */
68 		return -1;
69 	case CVMX_BOARD_TYPE_EBT3000:
70 	case CVMX_BOARD_TYPE_EBT5800:
71 	case CVMX_BOARD_TYPE_THUNDER:
72 	case CVMX_BOARD_TYPE_NICPRO2:
73 		/* Interface 0 is SPI4, interface 1 is RGMII */
74 		if ((ipd_port >= 16) && (ipd_port < 20))
75 			return ipd_port - 16;
76 		else
77 			return -1;
78 	case CVMX_BOARD_TYPE_KODAMA:
79 	case CVMX_BOARD_TYPE_EBH3100:
80 	case CVMX_BOARD_TYPE_HIKARI:
81 	case CVMX_BOARD_TYPE_CN3010_EVB_HS5:
82 	case CVMX_BOARD_TYPE_CN3005_EVB_HS5:
83 	case CVMX_BOARD_TYPE_CN3020_EVB_HS5:
84 		/*
85 		 * Port 0 is WAN connected to a PHY, Port 1 is GMII
86 		 * connected to a switch
87 		 */
88 		if (ipd_port == 0)
89 			return 4;
90 		else if (ipd_port == 1)
91 			return 9;
92 		else
93 			return -1;
94 	case CVMX_BOARD_TYPE_NAC38:
95 		/* Board has 8 RGMII ports PHYs are 0-7 */
96 		if ((ipd_port >= 0) && (ipd_port < 4))
97 			return ipd_port;
98 		else if ((ipd_port >= 16) && (ipd_port < 20))
99 			return ipd_port - 16 + 4;
100 		else
101 			return -1;
102 	case CVMX_BOARD_TYPE_EBH3000:
103 		/* Board has dual SPI4 and no PHYs */
104 		return -1;
105 	case CVMX_BOARD_TYPE_EBH5200:
106 	case CVMX_BOARD_TYPE_EBH5201:
107 	case CVMX_BOARD_TYPE_EBT5200:
108 		/* Board has 2 management ports */
109 		if ((ipd_port >= CVMX_HELPER_BOARD_MGMT_IPD_PORT) &&
110 		    (ipd_port < (CVMX_HELPER_BOARD_MGMT_IPD_PORT + 2)))
111 			return ipd_port - CVMX_HELPER_BOARD_MGMT_IPD_PORT;
112 		/*
113 		 * Board has 4 SGMII ports. The PHYs start right after the MII
114 		 * ports MII0 = 0, MII1 = 1, SGMII = 2-5.
115 		 */
116 		if ((ipd_port >= 0) && (ipd_port < 4))
117 			return ipd_port + 2;
118 		else
119 			return -1;
120 	case CVMX_BOARD_TYPE_EBH5600:
121 	case CVMX_BOARD_TYPE_EBH5601:
122 	case CVMX_BOARD_TYPE_EBH5610:
123 		/* Board has 1 management port */
124 		if (ipd_port == CVMX_HELPER_BOARD_MGMT_IPD_PORT)
125 			return 0;
126 		/*
127 		 * Board has 8 SGMII ports. 4 connect out, two connect
128 		 * to a switch, and 2 loop to each other
129 		 */
130 		if ((ipd_port >= 0) && (ipd_port < 4))
131 			return ipd_port + 1;
132 		else
133 			return -1;
134 	case CVMX_BOARD_TYPE_CUST_NB5:
135 		if (ipd_port == 2)
136 			return 4;
137 		else
138 			return -1;
139 	case CVMX_BOARD_TYPE_NIC_XLE_4G:
140 		/* Board has 4 SGMII ports. connected QLM3(interface 1) */
141 		if ((ipd_port >= 16) && (ipd_port < 20))
142 			return ipd_port - 16 + 1;
143 		else
144 			return -1;
145 	case CVMX_BOARD_TYPE_NIC_XLE_10G:
146 	case CVMX_BOARD_TYPE_NIC10E:
147 		return -1;
148 	case CVMX_BOARD_TYPE_NIC4E:
149 		if (ipd_port >= 0 && ipd_port <= 3)
150 			return (ipd_port + 0x1f) & 0x1f;
151 		else
152 			return -1;
153 	case CVMX_BOARD_TYPE_NIC2E:
154 		if (ipd_port >= 0 && ipd_port <= 1)
155 			return ipd_port + 1;
156 		else
157 			return -1;
158 	case CVMX_BOARD_TYPE_BBGW_REF:
159 		/*
160 		 * No PHYs are connected to Octeon, everything is
161 		 * through switch.
162 		 */
163 		return -1;
164 
165 	case CVMX_BOARD_TYPE_CUST_WSX16:
166 		if (ipd_port >= 0 && ipd_port <= 3)
167 			return ipd_port;
168 		else if (ipd_port >= 16 && ipd_port <= 19)
169 			return ipd_port - 16 + 4;
170 		else
171 			return -1;
172 	case CVMX_BOARD_TYPE_UBNT_E100:
173 		if (ipd_port >= 0 && ipd_port <= 2)
174 			return 7 - ipd_port;
175 		else
176 			return -1;
177 	case CVMX_BOARD_TYPE_KONTRON_S1901:
178 		if (ipd_port == CVMX_HELPER_BOARD_MGMT_IPD_PORT)
179 			return 1;
180 		else
181 			return -1;
182 
183 	}
184 
185 	/* Some unknown board. Somebody forgot to update this function... */
186 	cvmx_dprintf
187 	    ("cvmx_helper_board_get_mii_address: Unknown board type %d\n",
188 	     cvmx_sysinfo_get()->board_type);
189 	return -1;
190 }
191 
192 /*
193  * This function is the board specific method of determining an
194  * ethernet ports link speed. Most Octeon boards have Marvell PHYs
195  * and are handled by the fall through case. This function must be
196  * updated for boards that don't have the normal Marvell PHYs.
197  *
198  * This function must be modified for every new Octeon board.
199  * Internally it uses switch statements based on the cvmx_sysinfo
200  * data to determine board types and revisions. It relies on the
201  * fact that every Octeon board receives a unique board type
202  * enumeration from the bootloader.
203  *
204  * @ipd_port: IPD input port associated with the port we want to get link
205  *		   status for.
206  *
207  * Returns The ports link status. If the link isn't fully resolved, this must
208  *	   return zero.
209  */
210 union cvmx_helper_link_info __cvmx_helper_board_link_get(int ipd_port)
211 {
212 	union cvmx_helper_link_info result;
213 
214 	WARN_ONCE(!octeon_is_simulation(),
215 	     "Using deprecated link status - please update your DT");
216 
217 	/* Unless we fix it later, all links are defaulted to down */
218 	result.u64 = 0;
219 
220 	if (octeon_is_simulation()) {
221 		/* The simulator gives you a simulated 1Gbps full duplex link */
222 		result.s.link_up = 1;
223 		result.s.full_duplex = 1;
224 		result.s.speed = 1000;
225 		return result;
226 	}
227 
228 	if (OCTEON_IS_MODEL(OCTEON_CN3XXX)
229 		   || OCTEON_IS_MODEL(OCTEON_CN58XX)
230 		   || OCTEON_IS_MODEL(OCTEON_CN50XX)) {
231 		/*
232 		 * We don't have a PHY address, so attempt to use
233 		 * in-band status. It is really important that boards
234 		 * not supporting in-band status never get
235 		 * here. Reading broken in-band status tends to do bad
236 		 * things
237 		 */
238 		union cvmx_gmxx_rxx_rx_inbnd inband_status;
239 		int interface = cvmx_helper_get_interface_num(ipd_port);
240 		int index = cvmx_helper_get_interface_index_num(ipd_port);
241 		inband_status.u64 =
242 		    cvmx_read_csr(CVMX_GMXX_RXX_RX_INBND(index, interface));
243 
244 		result.s.link_up = inband_status.s.status;
245 		result.s.full_duplex = inband_status.s.duplex;
246 		switch (inband_status.s.speed) {
247 		case 0: /* 10 Mbps */
248 			result.s.speed = 10;
249 			break;
250 		case 1: /* 100 Mbps */
251 			result.s.speed = 100;
252 			break;
253 		case 2: /* 1 Gbps */
254 			result.s.speed = 1000;
255 			break;
256 		case 3: /* Illegal */
257 			result.u64 = 0;
258 			break;
259 		}
260 	} else {
261 		/*
262 		 * We don't have a PHY address and we don't have
263 		 * in-band status. There is no way to determine the
264 		 * link speed. Return down assuming this port isn't
265 		 * wired
266 		 */
267 		result.u64 = 0;
268 	}
269 
270 	/* If link is down, return all fields as zero. */
271 	if (!result.s.link_up)
272 		result.u64 = 0;
273 
274 	return result;
275 }
276 
277 /*
278  * This function is called by cvmx_helper_interface_probe() after it
279  * determines the number of ports Octeon can support on a specific
280  * interface. This function is the per board location to override
281  * this value. It is called with the number of ports Octeon might
282  * support and should return the number of actual ports on the
283  * board.
284  *
285  * This function must be modified for every new Octeon board.
286  * Internally it uses switch statements based on the cvmx_sysinfo
287  * data to determine board types and revisions. It relies on the
288  * fact that every Octeon board receives a unique board type
289  * enumeration from the bootloader.
290  *
291  * @interface: Interface to probe
292  * @supported_ports:
293  *		    Number of ports Octeon supports.
294  *
295  * Returns Number of ports the actual board supports. Many times this will
296  *	   simple be "support_ports".
297  */
298 int __cvmx_helper_board_interface_probe(int interface, int supported_ports)
299 {
300 	switch (cvmx_sysinfo_get()->board_type) {
301 	case CVMX_BOARD_TYPE_CN3005_EVB_HS5:
302 		if (interface == 0)
303 			return 2;
304 		break;
305 	case CVMX_BOARD_TYPE_BBGW_REF:
306 		if (interface == 0)
307 			return 2;
308 		break;
309 	case CVMX_BOARD_TYPE_NIC_XLE_4G:
310 		if (interface == 0)
311 			return 0;
312 		break;
313 		/* The 2nd interface on the EBH5600 is connected to the Marvel switch,
314 		   which we don't support. Disable ports connected to it */
315 	case CVMX_BOARD_TYPE_EBH5600:
316 		if (interface == 1)
317 			return 0;
318 		break;
319 	}
320 	return supported_ports;
321 }
322 
323 /*
324  * Get the clock type used for the USB block based on board type.
325  * Used by the USB code for auto configuration of clock type.
326  *
327  * Return USB clock type enumeration
328  */
329 enum cvmx_helper_board_usb_clock_types __cvmx_helper_board_usb_get_clock_type(void)
330 {
331 	switch (cvmx_sysinfo_get()->board_type) {
332 	case CVMX_BOARD_TYPE_BBGW_REF:
333 	case CVMX_BOARD_TYPE_LANAI2_A:
334 	case CVMX_BOARD_TYPE_LANAI2_U:
335 	case CVMX_BOARD_TYPE_LANAI2_G:
336 	case CVMX_BOARD_TYPE_NIC10E_66:
337 	case CVMX_BOARD_TYPE_UBNT_E100:
338 		return USB_CLOCK_TYPE_CRYSTAL_12;
339 	case CVMX_BOARD_TYPE_NIC10E:
340 		return USB_CLOCK_TYPE_REF_12;
341 	default:
342 		break;
343 	}
344 	/* Most boards except NIC10e use a 12MHz crystal */
345 	if (OCTEON_IS_OCTEON2())
346 		return USB_CLOCK_TYPE_CRYSTAL_12;
347 	return USB_CLOCK_TYPE_REF_48;
348 }
349