aboutsummaryrefslogtreecommitdiffstats
path: root/cvmx-helper-ilk.c
blob: c47c8529e8ecb6bd6e2e1d0a4c590a932d2b9ff2 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
/***********************license start***************
 * Copyright (c) 2010  Cavium Inc. (support@cavium.com). All rights
 * reserved.
 *
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   * Redistributions in binary form must reproduce the above
 *     copyright notice, this list of conditions and the following
 *     disclaimer in the documentation and/or other materials provided
 *     with the distribution.

 *   * Neither the name of Cavium Inc. nor the names of
 *     its contributors may be used to endorse or promote products
 *     derived from this software without specific prior written
 *     permission.

 * This Software, including technical data, may be subject to U.S. export  control
 * laws, including the U.S. Export Administration Act and its  associated
 * regulations, and may be subject to export or import  regulations in other
 * countries.

 * TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
 * AND WITH ALL FAULTS AND CAVIUM INC. MAKES NO PROMISES, REPRESENTATIONS OR
 * WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT TO
 * THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY REPRESENTATION OR
 * DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT DEFECTS, AND CAVIUM
 * SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES OF TITLE,
 * MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR PURPOSE, LACK OF
 * VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET POSSESSION OR
 * CORRESPONDENCE TO DESCRIPTION. THE ENTIRE  RISK ARISING OUT OF USE OR
 * PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
 ***********************license end**************************************/

/**
 * @file
 *
 * Functions for ILK initialization, configuration,
 * and monitoring.
 *
 * <hr>$Revision: 41586 $<hr>
 */

#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
#include <linux/module.h>

#include <asm/octeon/cvmx.h>
#include <asm/octeon/cvmx-config.h>
#include <asm/octeon/cvmx-helper.h>
#include <asm/octeon/cvmx-helper-cfg.h>
#include <asm/octeon/cvmx-ilk.h>
#include <asm/octeon/cvmx-bootmem.h>
#include <asm/octeon/cvmx-pko.h>
#include <asm/octeon/cvmx-qlm.h>
#include <asm/octeon/cvmx-ilk-defs.h>
#else
#include "executive-config.h"
#include "cvmx-config.h"
#include "cvmx.h"
#include "cvmx-helper.h"
#include "cvmx-helper-cfg.h"
#include "cvmx-ilk.h"
#include "cvmx-bootmem.h"
#include "cvmx-pko.h"
#include "cvmx-qlm.h"
#endif

#ifdef CVMX_ENABLE_PKO_FUNCTIONS

int __cvmx_helper_ilk_enumerate(int interface)
{
    interface -= CVMX_ILK_GBL_BASE;
    return cvmx_ilk_chans[interface];
}

/**
 * @INTERNAL
 * Probe a ILK interface and determine the number of ports
 * connected to it. The ILK interface should still be down
 * after this call.
 *
 * @param interface Interface to probe
 *
 * @return Number of ports on the interface. Zero to disable.
 */
int __cvmx_helper_ilk_probe(int interface)
{
    int i, j, res = -1;
    static int pipe_base = 0, pknd_base = 0;
    static cvmx_ilk_pipe_chan_t *pch = NULL, *tmp;
    static cvmx_ilk_chan_pknd_t *chpknd = NULL, *tmp1;
    static cvmx_ilk_cal_entry_t *calent = NULL, *tmp2;

    if (!OCTEON_IS_MODEL(OCTEON_CN68XX))
        return 0;

    interface -= CVMX_ILK_GBL_BASE;
    if (interface >= CVMX_NUM_ILK_INTF)
        return 0;

    /* the configuration should be done only once */
    if (cvmx_ilk_get_intf_ena (interface))
        return cvmx_ilk_chans[interface];

    /* configure lanes and enable the link */
    res = cvmx_ilk_start_interface (interface, cvmx_ilk_lane_mask[interface]);
    if (res < 0)
        return 0;

    /* set up the group of pipes available to ilk */
    if (pipe_base == 0)
        pipe_base = __cvmx_pko_get_pipe (interface + CVMX_ILK_GBL_BASE, 0);

    if (pipe_base == -1)
    {
        pipe_base = 0;
        return 0;
    }

    res = cvmx_ilk_set_pipe (interface, pipe_base, cvmx_ilk_chans[interface]);
    if (res < 0)
        return 0;

    /* set up pipe to channel mapping */
    i = pipe_base;
    if (pch == NULL)
    {
        pch = (cvmx_ilk_pipe_chan_t *)
#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
        kmalloc(CVMX_MAX_ILK_CHANS * sizeof(cvmx_ilk_pipe_chan_t), GFP_KERNEL);
#else
        cvmx_bootmem_alloc (CVMX_MAX_ILK_CHANS * sizeof(cvmx_ilk_pipe_chan_t),
                            sizeof(cvmx_ilk_pipe_chan_t));
#endif
        if (pch == NULL)
            return 0;
    }

    memset (pch, 0, CVMX_MAX_ILK_CHANS * sizeof(cvmx_ilk_pipe_chan_t));
    tmp = pch;
    for (j = 0; j < cvmx_ilk_chans[interface]; j++)
    {
        tmp->pipe = i++;
        tmp->chan = cvmx_ilk_chan_map[interface][j];
        tmp++;
    }
    res = cvmx_ilk_tx_set_channel (interface, pch, cvmx_ilk_chans[interface]);
    if (res < 0)
    {
        res = 0;
        goto err_free_pch;
    }
    pipe_base += cvmx_ilk_chans[interface];

    /* set up channel to pkind mapping */
    if (pknd_base == 0)
        pknd_base = cvmx_helper_get_pknd (interface + CVMX_ILK_GBL_BASE, 0);

    i = pknd_base;
    if (chpknd == NULL)
    {
        chpknd = (cvmx_ilk_chan_pknd_t *)
#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
        kmalloc(CVMX_MAX_ILK_PKNDS * sizeof(cvmx_ilk_chan_pknd_t), GFP_KERNEL);
#else
        cvmx_bootmem_alloc (CVMX_MAX_ILK_PKNDS * sizeof(cvmx_ilk_chan_pknd_t),
                            sizeof(cvmx_ilk_chan_pknd_t));
#endif
        if (chpknd == NULL)
        {
            pipe_base -= cvmx_ilk_chans[interface];
            res = 0;
            goto err_free_pch;
        }
    }

    memset (chpknd, 0, CVMX_MAX_ILK_PKNDS * sizeof(cvmx_ilk_chan_pknd_t));
    tmp1 = chpknd;
    for (j = 0; j < cvmx_ilk_chans[interface]; j++)
    {
        tmp1->chan = cvmx_ilk_chan_map[interface][j];
        tmp1->pknd = i++;
        tmp1++;
    }
    res = cvmx_ilk_rx_set_pknd (interface, chpknd, cvmx_ilk_chans[interface]);
    if (res < 0)
    {
        pipe_base -= cvmx_ilk_chans[interface];
        res = 0;
        goto err_free_chpknd;
    }
    pknd_base += cvmx_ilk_chans[interface];

    /* Set up tx calendar */
    if (calent == NULL)
    {
        calent = (cvmx_ilk_cal_entry_t *)
#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
        kmalloc(CVMX_MAX_ILK_PIPES * sizeof(cvmx_ilk_cal_entry_t), GFP_KERNEL);
#else
        cvmx_bootmem_alloc (CVMX_MAX_ILK_PIPES * sizeof(cvmx_ilk_cal_entry_t),
                            sizeof(cvmx_ilk_cal_entry_t));
#endif
        if (calent == NULL)
        {
            pipe_base -= cvmx_ilk_chans[interface];
            pknd_base -= cvmx_ilk_chans[interface];
            res = 0;
            goto err_free_chpknd;
        }
    }

    memset (calent, 0, CVMX_MAX_ILK_PIPES * sizeof(cvmx_ilk_cal_entry_t));
    tmp1 = chpknd;
    tmp2 = calent;
    for (j = 0; j < cvmx_ilk_chans[interface]; j++)
    {
        tmp2->pipe_bpid = tmp1->pknd;
        tmp2->ent_ctrl = PIPE_BPID;
        tmp1++;
        tmp2++;
    }
    res = cvmx_ilk_cal_setup_tx (interface, cvmx_ilk_chans[interface],
                                 calent, 1);
    if (res < 0)
    {
        pipe_base -= cvmx_ilk_chans[interface];
        pknd_base -= cvmx_ilk_chans[interface];
        res = 0;
        goto err_free_calent;
    }

    /* set up rx calendar. allocated memory can be reused.
     * this is because max pkind is always less than max pipe */
    memset (calent, 0, CVMX_MAX_ILK_PIPES * sizeof(cvmx_ilk_cal_entry_t));
    tmp = pch;
    tmp2 = calent;
    for (j = 0; j < cvmx_ilk_chans[interface]; j++)
    {
        tmp2->pipe_bpid = tmp->pipe;
        tmp2->ent_ctrl = PIPE_BPID;
        tmp++;
        tmp2++;
    }
    res = cvmx_ilk_cal_setup_rx (interface, cvmx_ilk_chans[interface],
                                 calent, CVMX_ILK_RX_FIFO_WM, 1);
    if (res < 0)
    {
        pipe_base -= cvmx_ilk_chans[interface];
        pknd_base -= cvmx_ilk_chans[interface];
        res = 0;
        goto err_free_calent;
    }
    res = __cvmx_helper_ilk_enumerate(interface + CVMX_ILK_GBL_BASE);

    goto out;

err_free_calent:
#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
    kfree (calent);
#else
    /* no free() for cvmx_bootmem_alloc() */
#endif

err_free_chpknd:
#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
    kfree (chpknd);
#else
    /* no free() for cvmx_bootmem_alloc() */ 
#endif

err_free_pch:
#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
    kfree (pch);
#else
    /* no free() for cvmx_bootmem_alloc() */ 
#endif
out:
    return res;
}

/**
 * @INTERNAL
 * Bringup and enable ILK interface. After this call packet
 * I/O should be fully functional. This is called with IPD
 * enabled but PKO disabled.
 *
 * @param interface Interface to bring up
 *
 * @return Zero on success, negative on failure
 */
int __cvmx_helper_ilk_enable(int interface)
{
    interface -= CVMX_ILK_GBL_BASE;
    return cvmx_ilk_enable(interface);
}

/**
 * @INTERNAL
 * Return the link state of an IPD/PKO port as returned by ILK link status.
 *
 * @param ipd_port IPD/PKO port to query
 *
 * @return Link state
 */
cvmx_helper_link_info_t __cvmx_helper_ilk_link_get(int ipd_port)
{
    cvmx_helper_link_info_t result;
    int interface = cvmx_helper_get_interface_num(ipd_port);
    int retry_count = 0;
    cvmx_ilk_rxx_cfg1_t ilk_rxx_cfg1;
    cvmx_ilk_rxx_int_t ilk_rxx_int;
    int lanes = 0;

    result.u64 = 0;
    interface -= CVMX_ILK_GBL_BASE;

retry:
    retry_count++;
    if (retry_count > 10)
        goto out;

    ilk_rxx_cfg1.u64 = cvmx_read_csr (CVMX_ILK_RXX_CFG1(interface));
    ilk_rxx_int.u64 = cvmx_read_csr (CVMX_ILK_RXX_INT(interface));

    /* Clear all RX status bits */
    if (ilk_rxx_int.u64)
        cvmx_write_csr(CVMX_ILK_RXX_INT(interface), ilk_rxx_int.u64);

    if (ilk_rxx_cfg1.s.rx_bdry_lock_ena == 0)
    {
        /* We need to start looking for work boundary lock */
        ilk_rxx_cfg1.s.rx_bdry_lock_ena = cvmx_ilk_get_intf_ln_msk(interface);
        ilk_rxx_cfg1.s.rx_align_ena = 0;
        cvmx_write_csr(CVMX_ILK_RXX_CFG1(interface), ilk_rxx_cfg1.u64);
        //cvmx_dprintf("ILK%d: Looking for word boundary lock\n", interface);
        goto retry;
    }

    if (ilk_rxx_cfg1.s.rx_align_ena == 0)
    {
        if (ilk_rxx_int.s.word_sync_done)
        {
            ilk_rxx_cfg1.s.rx_align_ena = 1;
            cvmx_write_csr(CVMX_ILK_RXX_CFG1(interface), ilk_rxx_cfg1.u64);
            //printf("ILK%d: Looking for lane alignment\n", interface);
            goto retry;
        }
        goto out;
    }

    if (ilk_rxx_int.s.lane_align_fail)
    {
        ilk_rxx_cfg1.s.rx_bdry_lock_ena = 0;
        ilk_rxx_cfg1.s.rx_align_ena = 0;
        cvmx_write_csr(CVMX_ILK_RXX_CFG1(interface), ilk_rxx_cfg1.u64);
        cvmx_dprintf("ILK%d: Lane alignment failed\n", interface);
        goto out;
    }

    if (ilk_rxx_int.s.lane_align_done)
    {
        //cvmx_dprintf("ILK%d: Lane alignment complete\n", interface);
    }

    lanes = cvmx_pop(ilk_rxx_cfg1.s.rx_bdry_lock_ena);

    result.s.link_up = 1;
    result.s.full_duplex = 1;
    result.s.speed = cvmx_qlm_get_gbaud_mhz(1+interface) * 64 / 67;
    result.s.speed *= lanes;

out:
    /* If the link is down we will force disable the RX path. If it up, we'll
        set it to match the TX state set by the if_enable call */
    if (result.s.link_up)
    {
        cvmx_ilk_txx_cfg1_t ilk_txx_cfg1;
        ilk_txx_cfg1.u64 = cvmx_read_csr(CVMX_ILK_TXX_CFG1(interface));
        ilk_rxx_cfg1.s.pkt_ena = ilk_txx_cfg1.s.pkt_ena;
        cvmx_write_csr(CVMX_ILK_RXX_CFG1(interface), ilk_rxx_cfg1.u64);
        //cvmx_dprintf("ILK%d: link up, %d Mbps, Full duplex mode, %d lanes\n", interface, result.s.speed, lanes);  
    }
    else
    {
        ilk_rxx_cfg1.s.pkt_ena = 0;
        cvmx_write_csr(CVMX_ILK_RXX_CFG1(interface), ilk_rxx_cfg1.u64);
        //cvmx_dprintf("ILK link down\n");
    }
    return result;
}

/**
 * @INTERNAL
 * Set the link state of an IPD/PKO port.
 *
 * @param ipd_port  IPD/PKO port to configure
 * @param link_info The new link state
 *
 * @return Zero on success, negative on failure
 */
int __cvmx_helper_ilk_link_set(int ipd_port, cvmx_helper_link_info_t link_info)
{
    /* nothing to do */

    return 0;
}

/**
 * Display ilk interface statistics.
 *
 */
void __cvmx_helper_ilk_show_stats (void)
{
    int i, j;
    unsigned char *pchans, num_chans;
    unsigned int chan_tmp[CVMX_MAX_ILK_CHANS];
    cvmx_ilk_stats_ctrl_t ilk_stats_ctrl;

    for (i = 0; i < CVMX_NUM_ILK_INTF; i++)
    {
        cvmx_ilk_get_chan_info (i, &pchans, &num_chans);

        memset (chan_tmp, 0, CVMX_MAX_ILK_CHANS * sizeof (int));
        for (j = 0; j < num_chans; j++)
            chan_tmp[j] = pchans[j];

        ilk_stats_ctrl.chan_list = chan_tmp;
        ilk_stats_ctrl.num_chans = num_chans;
        ilk_stats_ctrl.clr_on_rd = 0;
        cvmx_ilk_show_stats (i, &ilk_stats_ctrl);
    }
}

#endif /* CVMX_ENABLE_PKO_FUNCTIONS */