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1/*
2 * Copyright (c) 2003-2012 Broadcom Corporation
3 * All Rights Reserved
4 *
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the Broadcom
9 * license below:
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 *
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in
19 * the documentation and/or other materials provided with the
20 * distribution.
21 *
22 * THIS SOFTWARE IS PROVIDED BY BROADCOM ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
24 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL BROADCOM OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
29 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
30 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
31 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
32 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 */
34
35#ifndef _NLM_FMN_H_
36#define _NLM_FMN_H_
37
38#include <asm/netlogic/mips-extns.h> /* for COP2 access */
39
40/* Station IDs */
41#define FMN_STNID_CPU0 0x00
42#define FMN_STNID_CPU1 0x08
43#define FMN_STNID_CPU2 0x10
44#define FMN_STNID_CPU3 0x18
45#define FMN_STNID_CPU4 0x20
46#define FMN_STNID_CPU5 0x28
47#define FMN_STNID_CPU6 0x30
48#define FMN_STNID_CPU7 0x38
49
50#define FMN_STNID_XGS0_TX 64
51#define FMN_STNID_XMAC0_00_TX 64
52#define FMN_STNID_XMAC0_01_TX 65
53#define FMN_STNID_XMAC0_02_TX 66
54#define FMN_STNID_XMAC0_03_TX 67
55#define FMN_STNID_XMAC0_04_TX 68
56#define FMN_STNID_XMAC0_05_TX 69
57#define FMN_STNID_XMAC0_06_TX 70
58#define FMN_STNID_XMAC0_07_TX 71
59#define FMN_STNID_XMAC0_08_TX 72
60#define FMN_STNID_XMAC0_09_TX 73
61#define FMN_STNID_XMAC0_10_TX 74
62#define FMN_STNID_XMAC0_11_TX 75
63#define FMN_STNID_XMAC0_12_TX 76
64#define FMN_STNID_XMAC0_13_TX 77
65#define FMN_STNID_XMAC0_14_TX 78
66#define FMN_STNID_XMAC0_15_TX 79
67
68#define FMN_STNID_XGS1_TX 80
69#define FMN_STNID_XMAC1_00_TX 80
70#define FMN_STNID_XMAC1_01_TX 81
71#define FMN_STNID_XMAC1_02_TX 82
72#define FMN_STNID_XMAC1_03_TX 83
73#define FMN_STNID_XMAC1_04_TX 84
74#define FMN_STNID_XMAC1_05_TX 85
75#define FMN_STNID_XMAC1_06_TX 86
76#define FMN_STNID_XMAC1_07_TX 87
77#define FMN_STNID_XMAC1_08_TX 88
78#define FMN_STNID_XMAC1_09_TX 89
79#define FMN_STNID_XMAC1_10_TX 90
80#define FMN_STNID_XMAC1_11_TX 91
81#define FMN_STNID_XMAC1_12_TX 92
82#define FMN_STNID_XMAC1_13_TX 93
83#define FMN_STNID_XMAC1_14_TX 94
84#define FMN_STNID_XMAC1_15_TX 95
85
86#define FMN_STNID_GMAC 96
87#define FMN_STNID_GMACJFR_0 96
88#define FMN_STNID_GMACRFR_0 97
89#define FMN_STNID_GMACTX0 98
90#define FMN_STNID_GMACTX1 99
91#define FMN_STNID_GMACTX2 100
92#define FMN_STNID_GMACTX3 101
93#define FMN_STNID_GMACJFR_1 102
94#define FMN_STNID_GMACRFR_1 103
95
96#define FMN_STNID_DMA 104
97#define FMN_STNID_DMA_0 104
98#define FMN_STNID_DMA_1 105
99#define FMN_STNID_DMA_2 106
100#define FMN_STNID_DMA_3 107
101
102#define FMN_STNID_XGS0FR 112
103#define FMN_STNID_XMAC0JFR 112
104#define FMN_STNID_XMAC0RFR 113
105
106#define FMN_STNID_XGS1FR 114
107#define FMN_STNID_XMAC1JFR 114
108#define FMN_STNID_XMAC1RFR 115
109#define FMN_STNID_SEC 120
110#define FMN_STNID_SEC0 120
111#define FMN_STNID_SEC1 121
112#define FMN_STNID_SEC2 122
113#define FMN_STNID_SEC3 123
114#define FMN_STNID_PK0 124
115#define FMN_STNID_SEC_RSA 124
116#define FMN_STNID_SEC_RSVD0 125
117#define FMN_STNID_SEC_RSVD1 126
118#define FMN_STNID_SEC_RSVD2 127
119
120#define FMN_STNID_GMAC1 80
121#define FMN_STNID_GMAC1_FR_0 81
122#define FMN_STNID_GMAC1_TX0 82
123#define FMN_STNID_GMAC1_TX1 83
124#define FMN_STNID_GMAC1_TX2 84
125#define FMN_STNID_GMAC1_TX3 85
126#define FMN_STNID_GMAC1_FR_1 87
127#define FMN_STNID_GMAC0 96
128#define FMN_STNID_GMAC0_FR_0 97
129#define FMN_STNID_GMAC0_TX0 98
130#define FMN_STNID_GMAC0_TX1 99
131#define FMN_STNID_GMAC0_TX2 100
132#define FMN_STNID_GMAC0_TX3 101
133#define FMN_STNID_GMAC0_FR_1 103
134#define FMN_STNID_CMP_0 108
135#define FMN_STNID_CMP_1 109
136#define FMN_STNID_CMP_2 110
137#define FMN_STNID_CMP_3 111
138#define FMN_STNID_PCIE_0 116
139#define FMN_STNID_PCIE_1 117
140#define FMN_STNID_PCIE_2 118
141#define FMN_STNID_PCIE_3 119
142#define FMN_STNID_XLS_PK0 121
143
144#define nlm_read_c2_cc0(s) __read_32bit_c2_register($16, s)
145#define nlm_read_c2_cc1(s) __read_32bit_c2_register($17, s)
146#define nlm_read_c2_cc2(s) __read_32bit_c2_register($18, s)
147#define nlm_read_c2_cc3(s) __read_32bit_c2_register($19, s)
148#define nlm_read_c2_cc4(s) __read_32bit_c2_register($20, s)
149#define nlm_read_c2_cc5(s) __read_32bit_c2_register($21, s)
150#define nlm_read_c2_cc6(s) __read_32bit_c2_register($22, s)
151#define nlm_read_c2_cc7(s) __read_32bit_c2_register($23, s)
152#define nlm_read_c2_cc8(s) __read_32bit_c2_register($24, s)
153#define nlm_read_c2_cc9(s) __read_32bit_c2_register($25, s)
154#define nlm_read_c2_cc10(s) __read_32bit_c2_register($26, s)
155#define nlm_read_c2_cc11(s) __read_32bit_c2_register($27, s)
156#define nlm_read_c2_cc12(s) __read_32bit_c2_register($28, s)
157#define nlm_read_c2_cc13(s) __read_32bit_c2_register($29, s)
158#define nlm_read_c2_cc14(s) __read_32bit_c2_register($30, s)
159#define nlm_read_c2_cc15(s) __read_32bit_c2_register($31, s)
160
161#define nlm_write_c2_cc0(s, v) __write_32bit_c2_register($16, s, v)
162#define nlm_write_c2_cc1(s, v) __write_32bit_c2_register($17, s, v)
163#define nlm_write_c2_cc2(s, v) __write_32bit_c2_register($18, s, v)
164#define nlm_write_c2_cc3(s, v) __write_32bit_c2_register($19, s, v)
165#define nlm_write_c2_cc4(s, v) __write_32bit_c2_register($20, s, v)
166#define nlm_write_c2_cc5(s, v) __write_32bit_c2_register($21, s, v)
167#define nlm_write_c2_cc6(s, v) __write_32bit_c2_register($22, s, v)
168#define nlm_write_c2_cc7(s, v) __write_32bit_c2_register($23, s, v)
169#define nlm_write_c2_cc8(s, v) __write_32bit_c2_register($24, s, v)
170#define nlm_write_c2_cc9(s, v) __write_32bit_c2_register($25, s, v)
171#define nlm_write_c2_cc10(s, v) __write_32bit_c2_register($26, s, v)
172#define nlm_write_c2_cc11(s, v) __write_32bit_c2_register($27, s, v)
173#define nlm_write_c2_cc12(s, v) __write_32bit_c2_register($28, s, v)
174#define nlm_write_c2_cc13(s, v) __write_32bit_c2_register($29, s, v)
175#define nlm_write_c2_cc14(s, v) __write_32bit_c2_register($30, s, v)
176#define nlm_write_c2_cc15(s, v) __write_32bit_c2_register($31, s, v)
177
178#define nlm_read_c2_status0() __read_32bit_c2_register($2, 0)
179#define nlm_write_c2_status0(v) __write_32bit_c2_register($2, 0, v)
180#define nlm_read_c2_status1() __read_32bit_c2_register($2, 1)
181#define nlm_write_c2_status1(v) __write_32bit_c2_register($2, 1, v)
182#define nlm_read_c2_status(sel) __read_32bit_c2_register($2, 0)
183#define nlm_read_c2_config() __read_32bit_c2_register($3, 0)
184#define nlm_write_c2_config(v) __write_32bit_c2_register($3, 0, v)
185#define nlm_read_c2_bucksize(b) __read_32bit_c2_register($4, b)
186#define nlm_write_c2_bucksize(b, v) __write_32bit_c2_register($4, b, v)
187
188#define nlm_read_c2_rx_msg0() __read_64bit_c2_register($1, 0)
189#define nlm_read_c2_rx_msg1() __read_64bit_c2_register($1, 1)
190#define nlm_read_c2_rx_msg2() __read_64bit_c2_register($1, 2)
191#define nlm_read_c2_rx_msg3() __read_64bit_c2_register($1, 3)
192
193#define nlm_write_c2_tx_msg0(v) __write_64bit_c2_register($0, 0, v)
194#define nlm_write_c2_tx_msg1(v) __write_64bit_c2_register($0, 1, v)
195#define nlm_write_c2_tx_msg2(v) __write_64bit_c2_register($0, 2, v)
196#define nlm_write_c2_tx_msg3(v) __write_64bit_c2_register($0, 3, v)
197
198#define FMN_STN_RX_QSIZE 256
199#define FMN_NSTATIONS 128
200#define FMN_CORE_NBUCKETS 8
201
202static inline void nlm_msgsnd(unsigned int stid)
203{
204 __asm__ volatile (
205 ".set push\n"
206 ".set noreorder\n"
207 ".set noat\n"
208 "move $1, %0\n"
209 "c2 0x10001\n" /* msgsnd $1 */
210 ".set pop\n"
211 : : "r" (stid) : "$1"
212 );
213}
214
215static inline void nlm_msgld(unsigned int pri)
216{
217 __asm__ volatile (
218 ".set push\n"
219 ".set noreorder\n"
220 ".set noat\n"
221 "move $1, %0\n"
222 "c2 0x10002\n" /* msgld $1 */
223 ".set pop\n"
224 : : "r" (pri) : "$1"
225 );
226}
227
228static inline void nlm_msgwait(unsigned int mask)
229{
230 __asm__ volatile (
231 ".set push\n"
232 ".set noreorder\n"
233 ".set noat\n"
234 "move $8, %0\n"
235 "c2 0x10003\n" /* msgwait $1 */
236 ".set pop\n"
237 : : "r" (mask) : "$1"
238 );
239}
240
241/*
242 * Disable interrupts and enable COP2 access
243 */
244static inline uint32_t nlm_cop2_enable_irqsave(void)
245{
246 uint32_t sr = read_c0_status();
247
248 write_c0_status((sr & ~ST0_IE) | ST0_CU2);
249 return sr;
250}
251
252static inline void nlm_cop2_disable_irqrestore(uint32_t sr)
253{
254 write_c0_status(sr);
255}
256
257static inline void nlm_fmn_setup_intr(int irq, unsigned int tmask)
258{
259 uint32_t config;
260
261 config = (1 << 24) /* interrupt water mark - 1 msg */
262 | (irq << 16) /* irq */
263 | (tmask << 8) /* thread mask */
264 | 0x2; /* enable watermark intr, disable empty intr */
265 nlm_write_c2_config(config);
266}
267
268struct nlm_fmn_msg {
269 uint64_t msg0;
270 uint64_t msg1;
271 uint64_t msg2;
272 uint64_t msg3;
273};
274
275static inline int nlm_fmn_send(unsigned int size, unsigned int code,
276 unsigned int stid, struct nlm_fmn_msg *msg)
277{
278 unsigned int dest;
279 uint32_t status;
280 int i;
281
282 /*
283 * Make sure that all the writes pending at the cpu are flushed.
284 * Any writes pending on CPU will not be see by devices. L1/L2
285 * caches are coherent with IO, so no cache flush needed.
286 */
287 __asm __volatile("sync");
288
289 /* Load TX message buffers */
290 nlm_write_c2_tx_msg0(msg->msg0);
291 nlm_write_c2_tx_msg1(msg->msg1);
292 nlm_write_c2_tx_msg2(msg->msg2);
293 nlm_write_c2_tx_msg3(msg->msg3);
294 dest = ((size - 1) << 16) | (code << 8) | stid;
295
296 /*
297 * Retry a few times on credit fail, this should be a
298 * transient condition, unless there is a configuration
299 * failure, or the receiver is stuck.
300 */
301 for (i = 0; i < 8; i++) {
302 nlm_msgsnd(dest);
303 status = nlm_read_c2_status0();
304 if ((status & 0x4) == 0)
305 return 0;
306 }
307
308 /* If there is a credit failure, return error */
309 return status & 0x06;
310}
311
312static inline int nlm_fmn_receive(int bucket, int *size, int *code, int *stid,
313 struct nlm_fmn_msg *msg)
314{
315 uint32_t status, tmp;
316
317 nlm_msgld(bucket);
318
319 /* wait for load pending to clear */
320 do {
321 status = nlm_read_c2_status0();
322 } while ((status & 0x08) != 0);
323
324 /* receive error bits */
325 tmp = status & 0x30;
326 if (tmp != 0)
327 return tmp;
328
329 *size = ((status & 0xc0) >> 6) + 1;
330 *code = (status & 0xff00) >> 8;
331 *stid = (status & 0x7f0000) >> 16;
332 msg->msg0 = nlm_read_c2_rx_msg0();
333 msg->msg1 = nlm_read_c2_rx_msg1();
334 msg->msg2 = nlm_read_c2_rx_msg2();
335 msg->msg3 = nlm_read_c2_rx_msg3();
336
337 return 0;
338}
339
340struct xlr_fmn_info {
341 int num_buckets;
342 int start_stn_id;
343 int end_stn_id;
344 int credit_config[128];
345};
346
347struct xlr_board_fmn_config {
348 int bucket_size[128]; /* size of buckets for all stations */
349 struct xlr_fmn_info cpu[8];
350 struct xlr_fmn_info gmac[2];
351 struct xlr_fmn_info dma;
352 struct xlr_fmn_info cmp;
353 struct xlr_fmn_info sae;
354 struct xlr_fmn_info xgmac[2];
355};
356
357extern int nlm_register_fmn_handler(int start, int end,
358 void (*fn)(int, int, int, int, struct nlm_fmn_msg *, void *),
359 void *arg);
360extern void xlr_percpu_fmn_init(void);
361extern void nlm_setup_fmn_irq(void);
362extern void xlr_board_info_setup(void);
363
364extern struct xlr_board_fmn_config xlr_board_fmn_config;
365#endif