1// SPDX-License-Identifier: GPL-2.0
2/* Marvell CN10K RPM driver
3 *
4 * Copyright (C) 2020 Marvell.
5 *
6 */
7
8#include "cgx.h"
9#include "lmac_common.h"
10
11static struct mac_ops rpm_mac_ops = {
12 .name = "rpm",
13 .csr_offset = 0x4e00,
14 .lmac_offset = 20,
15 .int_register = RPMX_CMRX_SW_INT,
16 .int_set_reg = RPMX_CMRX_SW_INT_ENA_W1S,
17 .irq_offset = 1,
18 .int_ena_bit = BIT_ULL(0),
19 .lmac_fwi = RPM_LMAC_FWI,
20 .non_contiguous_serdes_lane = true,
21 .rx_stats_cnt = 43,
22 .tx_stats_cnt = 34,
23 .dmac_filter_count = 32,
24 .get_nr_lmacs = rpm_get_nr_lmacs,
25 .get_lmac_type = rpm_get_lmac_type,
26 .lmac_fifo_len = rpm_get_lmac_fifo_len,
27 .mac_lmac_intl_lbk = rpm_lmac_internal_loopback,
28 .mac_get_rx_stats = rpm_get_rx_stats,
29 .mac_get_tx_stats = rpm_get_tx_stats,
30 .get_fec_stats = rpm_get_fec_stats,
31 .mac_enadis_rx_pause_fwding = rpm_lmac_enadis_rx_pause_fwding,
32 .mac_get_pause_frm_status = rpm_lmac_get_pause_frm_status,
33 .mac_enadis_pause_frm = rpm_lmac_enadis_pause_frm,
34 .mac_pause_frm_config = rpm_lmac_pause_frm_config,
35 .mac_enadis_ptp_config = rpm_lmac_ptp_config,
36 .mac_rx_tx_enable = rpm_lmac_rx_tx_enable,
37 .mac_tx_enable = rpm_lmac_tx_enable,
38 .pfc_config = rpm_lmac_pfc_config,
39 .mac_get_pfc_frm_cfg = rpm_lmac_get_pfc_frm_cfg,
40 .mac_reset = rpm_lmac_reset,
41};
42
43static struct mac_ops rpm2_mac_ops = {
44 .name = "rpm",
45 .csr_offset = RPM2_CSR_OFFSET,
46 .lmac_offset = 20,
47 .int_register = RPM2_CMRX_SW_INT,
48 .int_set_reg = RPM2_CMRX_SW_INT_ENA_W1S,
49 .irq_offset = 1,
50 .int_ena_bit = BIT_ULL(0),
51 .lmac_fwi = RPM2_LMAC_FWI,
52 .non_contiguous_serdes_lane = true,
53 .rx_stats_cnt = 43,
54 .tx_stats_cnt = 34,
55 .dmac_filter_count = 64,
56 .get_nr_lmacs = rpm2_get_nr_lmacs,
57 .get_lmac_type = rpm_get_lmac_type,
58 .lmac_fifo_len = rpm2_get_lmac_fifo_len,
59 .mac_lmac_intl_lbk = rpm_lmac_internal_loopback,
60 .mac_get_rx_stats = rpm_get_rx_stats,
61 .mac_get_tx_stats = rpm_get_tx_stats,
62 .get_fec_stats = rpm_get_fec_stats,
63 .mac_enadis_rx_pause_fwding = rpm_lmac_enadis_rx_pause_fwding,
64 .mac_get_pause_frm_status = rpm_lmac_get_pause_frm_status,
65 .mac_enadis_pause_frm = rpm_lmac_enadis_pause_frm,
66 .mac_pause_frm_config = rpm_lmac_pause_frm_config,
67 .mac_enadis_ptp_config = rpm_lmac_ptp_config,
68 .mac_rx_tx_enable = rpm_lmac_rx_tx_enable,
69 .mac_tx_enable = rpm_lmac_tx_enable,
70 .pfc_config = rpm_lmac_pfc_config,
71 .mac_get_pfc_frm_cfg = rpm_lmac_get_pfc_frm_cfg,
72 .mac_reset = rpm_lmac_reset,
73};
74
75bool is_dev_rpm2(void *rpmd)
76{
77 rpm_t *rpm = rpmd;
78
79 return (rpm->pdev->device == PCI_DEVID_CN10KB_RPM);
80}
81
82struct mac_ops *rpm_get_mac_ops(rpm_t *rpm)
83{
84 if (is_dev_rpm2(rpmd: rpm))
85 return &rpm2_mac_ops;
86 else
87 return &rpm_mac_ops;
88}
89
90static void rpm_write(rpm_t *rpm, u64 lmac, u64 offset, u64 val)
91{
92 cgx_write(cgx: rpm, lmac, offset, val);
93}
94
95static u64 rpm_read(rpm_t *rpm, u64 lmac, u64 offset)
96{
97 return cgx_read(cgx: rpm, lmac, offset);
98}
99
100/* Read HW major version to determine RPM
101 * MAC type 100/USX
102 */
103static bool is_mac_rpmusx(void *rpmd)
104{
105 rpm_t *rpm = rpmd;
106
107 return rpm_read(rpm, lmac: 0, RPMX_CONST1) & 0x700ULL;
108}
109
110int rpm_get_nr_lmacs(void *rpmd)
111{
112 rpm_t *rpm = rpmd;
113
114 return hweight8(rpm_read(rpm, 0, CGXX_CMRX_RX_LMACS) & 0xFULL);
115}
116
117int rpm2_get_nr_lmacs(void *rpmd)
118{
119 rpm_t *rpm = rpmd;
120
121 return hweight8(rpm_read(rpm, 0, RPM2_CMRX_RX_LMACS) & 0xFFULL);
122}
123
124int rpm_lmac_tx_enable(void *rpmd, int lmac_id, bool enable)
125{
126 rpm_t *rpm = rpmd;
127 u64 cfg, last;
128
129 if (!is_lmac_valid(cgx: rpm, lmac_id))
130 return -ENODEV;
131
132 cfg = rpm_read(rpm, lmac: lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG);
133 last = cfg;
134 if (enable)
135 cfg |= RPM_TX_EN;
136 else
137 cfg &= ~(RPM_TX_EN);
138
139 if (cfg != last)
140 rpm_write(rpm, lmac: lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG, val: cfg);
141 return !!(last & RPM_TX_EN);
142}
143
144int rpm_lmac_rx_tx_enable(void *rpmd, int lmac_id, bool enable)
145{
146 rpm_t *rpm = rpmd;
147 u64 cfg;
148
149 if (!is_lmac_valid(cgx: rpm, lmac_id))
150 return -ENODEV;
151
152 cfg = rpm_read(rpm, lmac: lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG);
153 if (enable)
154 cfg |= RPM_RX_EN | RPM_TX_EN;
155 else
156 cfg &= ~(RPM_RX_EN | RPM_TX_EN);
157 rpm_write(rpm, lmac: lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG, val: cfg);
158 return 0;
159}
160
161void rpm_lmac_enadis_rx_pause_fwding(void *rpmd, int lmac_id, bool enable)
162{
163 rpm_t *rpm = rpmd;
164 struct lmac *lmac;
165 u64 cfg;
166
167 if (!rpm)
168 return;
169
170 lmac = lmac_pdata(lmac_id, cgx: rpm);
171 if (!lmac)
172 return;
173
174 /* Pause frames are not enabled just return */
175 if (!bitmap_weight(src: lmac->rx_fc_pfvf_bmap.bmap, nbits: lmac->rx_fc_pfvf_bmap.max))
176 return;
177
178 if (enable) {
179 cfg = rpm_read(rpm, lmac: lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG);
180 cfg &= ~RPMX_MTI_MAC100X_COMMAND_CONFIG_PAUSE_IGNORE;
181 rpm_write(rpm, lmac: lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG, val: cfg);
182 } else {
183 cfg = rpm_read(rpm, lmac: lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG);
184 cfg |= RPMX_MTI_MAC100X_COMMAND_CONFIG_PAUSE_IGNORE;
185 rpm_write(rpm, lmac: lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG, val: cfg);
186 }
187}
188
189int rpm_lmac_get_pause_frm_status(void *rpmd, int lmac_id,
190 u8 *tx_pause, u8 *rx_pause)
191{
192 rpm_t *rpm = rpmd;
193 u64 cfg;
194
195 if (!is_lmac_valid(cgx: rpm, lmac_id))
196 return -ENODEV;
197
198 cfg = rpm_read(rpm, lmac: lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG);
199 if (!(cfg & RPMX_MTI_MAC100X_COMMAND_CONFIG_PFC_MODE)) {
200 *rx_pause = !(cfg & RPMX_MTI_MAC100X_COMMAND_CONFIG_RX_P_DISABLE);
201 *tx_pause = !(cfg & RPMX_MTI_MAC100X_COMMAND_CONFIG_TX_P_DISABLE);
202 }
203
204 return 0;
205}
206
207static void rpm_cfg_pfc_quanta_thresh(rpm_t *rpm, int lmac_id,
208 unsigned long pfc_en,
209 bool enable)
210{
211 u64 quanta_offset = 0, quanta_thresh = 0, cfg;
212 int i, shift;
213
214 /* Set pause time and interval */
215 for_each_set_bit(i, &pfc_en, 16) {
216 switch (i) {
217 case 0:
218 case 1:
219 quanta_offset = RPMX_MTI_MAC100X_CL01_PAUSE_QUANTA;
220 quanta_thresh = RPMX_MTI_MAC100X_CL01_QUANTA_THRESH;
221 break;
222 case 2:
223 case 3:
224 quanta_offset = RPMX_MTI_MAC100X_CL23_PAUSE_QUANTA;
225 quanta_thresh = RPMX_MTI_MAC100X_CL23_QUANTA_THRESH;
226 break;
227 case 4:
228 case 5:
229 quanta_offset = RPMX_MTI_MAC100X_CL45_PAUSE_QUANTA;
230 quanta_thresh = RPMX_MTI_MAC100X_CL45_QUANTA_THRESH;
231 break;
232 case 6:
233 case 7:
234 quanta_offset = RPMX_MTI_MAC100X_CL67_PAUSE_QUANTA;
235 quanta_thresh = RPMX_MTI_MAC100X_CL67_QUANTA_THRESH;
236 break;
237 case 8:
238 case 9:
239 quanta_offset = RPMX_MTI_MAC100X_CL89_PAUSE_QUANTA;
240 quanta_thresh = RPMX_MTI_MAC100X_CL89_QUANTA_THRESH;
241 break;
242 case 10:
243 case 11:
244 quanta_offset = RPMX_MTI_MAC100X_CL1011_PAUSE_QUANTA;
245 quanta_thresh = RPMX_MTI_MAC100X_CL1011_QUANTA_THRESH;
246 break;
247 case 12:
248 case 13:
249 quanta_offset = RPMX_MTI_MAC100X_CL1213_PAUSE_QUANTA;
250 quanta_thresh = RPMX_MTI_MAC100X_CL1213_QUANTA_THRESH;
251 break;
252 case 14:
253 case 15:
254 quanta_offset = RPMX_MTI_MAC100X_CL1415_PAUSE_QUANTA;
255 quanta_thresh = RPMX_MTI_MAC100X_CL1415_QUANTA_THRESH;
256 break;
257 }
258
259 if (!quanta_offset || !quanta_thresh)
260 continue;
261
262 shift = (i % 2) ? 1 : 0;
263 cfg = rpm_read(rpm, lmac: lmac_id, offset: quanta_offset);
264 if (enable) {
265 cfg |= ((u64)RPM_DEFAULT_PAUSE_TIME << shift * 16);
266 } else {
267 if (!shift)
268 cfg &= ~GENMASK_ULL(15, 0);
269 else
270 cfg &= ~GENMASK_ULL(31, 16);
271 }
272 rpm_write(rpm, lmac: lmac_id, offset: quanta_offset, val: cfg);
273
274 cfg = rpm_read(rpm, lmac: lmac_id, offset: quanta_thresh);
275 if (enable) {
276 cfg |= ((u64)(RPM_DEFAULT_PAUSE_TIME / 2) << shift * 16);
277 } else {
278 if (!shift)
279 cfg &= ~GENMASK_ULL(15, 0);
280 else
281 cfg &= ~GENMASK_ULL(31, 16);
282 }
283 rpm_write(rpm, lmac: lmac_id, offset: quanta_thresh, val: cfg);
284 }
285}
286
287static void rpm2_lmac_cfg_bp(rpm_t *rpm, int lmac_id, u8 tx_pause, u8 rx_pause)
288{
289 u64 cfg;
290
291 cfg = rpm_read(rpm, lmac: lmac_id, RPM2_CMR_RX_OVR_BP);
292 if (tx_pause) {
293 /* Configure CL0 Pause Quanta & threshold
294 * for 802.3X frames
295 */
296 rpm_cfg_pfc_quanta_thresh(rpm, lmac_id, pfc_en: 1, enable: true);
297 cfg &= ~RPM2_CMR_RX_OVR_BP_EN;
298 } else {
299 /* Disable all Pause Quanta & threshold values */
300 rpm_cfg_pfc_quanta_thresh(rpm, lmac_id, pfc_en: 0xffff, enable: false);
301 cfg |= RPM2_CMR_RX_OVR_BP_EN;
302 cfg &= ~RPM2_CMR_RX_OVR_BP_BP;
303 }
304 rpm_write(rpm, lmac: lmac_id, RPM2_CMR_RX_OVR_BP, val: cfg);
305}
306
307static void rpm_lmac_cfg_bp(rpm_t *rpm, int lmac_id, u8 tx_pause, u8 rx_pause)
308{
309 u64 cfg;
310
311 cfg = rpm_read(rpm, lmac: 0, RPMX_CMR_RX_OVR_BP);
312 if (tx_pause) {
313 /* Configure CL0 Pause Quanta & threshold for
314 * 802.3X frames
315 */
316 rpm_cfg_pfc_quanta_thresh(rpm, lmac_id, pfc_en: 1, enable: true);
317 cfg &= ~RPMX_CMR_RX_OVR_BP_EN(lmac_id);
318 } else {
319 /* Disable all Pause Quanta & threshold values */
320 rpm_cfg_pfc_quanta_thresh(rpm, lmac_id, pfc_en: 0xffff, enable: false);
321 cfg |= RPMX_CMR_RX_OVR_BP_EN(lmac_id);
322 cfg &= ~RPMX_CMR_RX_OVR_BP_BP(lmac_id);
323 }
324 rpm_write(rpm, lmac: 0, RPMX_CMR_RX_OVR_BP, val: cfg);
325}
326
327int rpm_lmac_enadis_pause_frm(void *rpmd, int lmac_id, u8 tx_pause,
328 u8 rx_pause)
329{
330 rpm_t *rpm = rpmd;
331 u64 cfg;
332
333 if (!is_lmac_valid(cgx: rpm, lmac_id))
334 return -ENODEV;
335
336 cfg = rpm_read(rpm, lmac: lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG);
337 cfg &= ~RPMX_MTI_MAC100X_COMMAND_CONFIG_RX_P_DISABLE;
338 cfg |= rx_pause ? 0x0 : RPMX_MTI_MAC100X_COMMAND_CONFIG_RX_P_DISABLE;
339 cfg &= ~RPMX_MTI_MAC100X_COMMAND_CONFIG_PAUSE_IGNORE;
340 cfg |= rx_pause ? 0x0 : RPMX_MTI_MAC100X_COMMAND_CONFIG_PAUSE_IGNORE;
341 rpm_write(rpm, lmac: lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG, val: cfg);
342
343 cfg = rpm_read(rpm, lmac: lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG);
344 cfg &= ~RPMX_MTI_MAC100X_COMMAND_CONFIG_TX_P_DISABLE;
345 cfg |= tx_pause ? 0x0 : RPMX_MTI_MAC100X_COMMAND_CONFIG_TX_P_DISABLE;
346 rpm_write(rpm, lmac: lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG, val: cfg);
347
348 if (is_dev_rpm2(rpmd: rpm))
349 rpm2_lmac_cfg_bp(rpm, lmac_id, tx_pause, rx_pause);
350 else
351 rpm_lmac_cfg_bp(rpm, lmac_id, tx_pause, rx_pause);
352
353 return 0;
354}
355
356void rpm_lmac_pause_frm_config(void *rpmd, int lmac_id, bool enable)
357{
358 u64 cfg, pfc_class_mask_cfg;
359 rpm_t *rpm = rpmd;
360
361 /* ALL pause frames received are completely ignored */
362 cfg = rpm_read(rpm, lmac: lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG);
363 cfg |= RPMX_MTI_MAC100X_COMMAND_CONFIG_RX_P_DISABLE;
364 rpm_write(rpm, lmac: lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG, val: cfg);
365
366 /* Disable forward pause to TX block */
367 cfg = rpm_read(rpm, lmac: lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG);
368 cfg |= RPMX_MTI_MAC100X_COMMAND_CONFIG_PAUSE_IGNORE;
369 rpm_write(rpm, lmac: lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG, val: cfg);
370
371 /* Disable pause frames transmission */
372 cfg = rpm_read(rpm, lmac: lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG);
373 cfg |= RPMX_MTI_MAC100X_COMMAND_CONFIG_TX_P_DISABLE;
374 rpm_write(rpm, lmac: lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG, val: cfg);
375
376 /* Disable forward pause to driver */
377 cfg = rpm_read(rpm, lmac: lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG);
378 cfg &= ~RPMX_MTI_MAC100X_COMMAND_CONFIG_PAUSE_FWD;
379 rpm_write(rpm, lmac: lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG, val: cfg);
380
381 /* Enable channel mask for all LMACS */
382 if (is_dev_rpm2(rpmd: rpm))
383 rpm_write(rpm, lmac: lmac_id, RPM2_CMR_CHAN_MSK_OR, val: 0xffff);
384 else
385 rpm_write(rpm, lmac: 0, RPMX_CMR_CHAN_MSK_OR, val: ~0ULL);
386
387 /* Disable all PFC classes */
388 pfc_class_mask_cfg = is_dev_rpm2(rpmd: rpm) ? RPM2_CMRX_PRT_CBFC_CTL :
389 RPMX_CMRX_PRT_CBFC_CTL;
390 cfg = rpm_read(rpm, lmac: lmac_id, offset: pfc_class_mask_cfg);
391 cfg = FIELD_SET(RPM_PFC_CLASS_MASK, 0, cfg);
392 rpm_write(rpm, lmac: lmac_id, offset: pfc_class_mask_cfg, val: cfg);
393}
394
395int rpm_get_rx_stats(void *rpmd, int lmac_id, int idx, u64 *rx_stat)
396{
397 rpm_t *rpm = rpmd;
398 u64 val_lo, val_hi;
399
400 if (!is_lmac_valid(cgx: rpm, lmac_id))
401 return -ENODEV;
402
403 mutex_lock(&rpm->lock);
404
405 /* Update idx to point per lmac Rx statistics page */
406 idx += lmac_id * rpm->mac_ops->rx_stats_cnt;
407
408 /* Read lower 32 bits of counter */
409 val_lo = rpm_read(rpm, lmac: 0, RPMX_MTI_STAT_RX_STAT_PAGES_COUNTERX +
410 (idx * 8));
411
412 /* upon read of lower 32 bits, higher 32 bits are written
413 * to RPMX_MTI_STAT_DATA_HI_CDC
414 */
415 val_hi = rpm_read(rpm, lmac: 0, RPMX_MTI_STAT_DATA_HI_CDC);
416
417 *rx_stat = (val_hi << 32 | val_lo);
418
419 mutex_unlock(lock: &rpm->lock);
420 return 0;
421}
422
423int rpm_get_tx_stats(void *rpmd, int lmac_id, int idx, u64 *tx_stat)
424{
425 rpm_t *rpm = rpmd;
426 u64 val_lo, val_hi;
427
428 if (!is_lmac_valid(cgx: rpm, lmac_id))
429 return -ENODEV;
430
431 mutex_lock(&rpm->lock);
432
433 /* Update idx to point per lmac Tx statistics page */
434 idx += lmac_id * rpm->mac_ops->tx_stats_cnt;
435
436 val_lo = rpm_read(rpm, lmac: 0, RPMX_MTI_STAT_TX_STAT_PAGES_COUNTERX +
437 (idx * 8));
438 val_hi = rpm_read(rpm, lmac: 0, RPMX_MTI_STAT_DATA_HI_CDC);
439
440 *tx_stat = (val_hi << 32 | val_lo);
441
442 mutex_unlock(lock: &rpm->lock);
443 return 0;
444}
445
446u8 rpm_get_lmac_type(void *rpmd, int lmac_id)
447{
448 rpm_t *rpm = rpmd;
449 u64 req = 0, resp;
450 int err;
451
452 req = FIELD_SET(CMDREG_ID, CGX_CMD_GET_LINK_STS, req);
453 err = cgx_fwi_cmd_generic(req, resp: &resp, cgx: rpm, lmac_id: 0);
454 if (!err)
455 return FIELD_GET(RESP_LINKSTAT_LMAC_TYPE, resp);
456 return err;
457}
458
459u32 rpm_get_lmac_fifo_len(void *rpmd, int lmac_id)
460{
461 rpm_t *rpm = rpmd;
462 u64 hi_perf_lmac;
463 u8 num_lmacs;
464 u32 fifo_len;
465
466 fifo_len = rpm->mac_ops->fifo_len;
467 num_lmacs = rpm->mac_ops->get_nr_lmacs(rpm);
468
469 switch (num_lmacs) {
470 case 1:
471 return fifo_len;
472 case 2:
473 return fifo_len / 2;
474 case 3:
475 /* LMAC marked as hi_perf gets half of the FIFO and rest 1/4th */
476 hi_perf_lmac = rpm_read(rpm, lmac: 0, CGXX_CMRX_RX_LMACS);
477 hi_perf_lmac = (hi_perf_lmac >> 4) & 0x3ULL;
478 if (lmac_id == hi_perf_lmac)
479 return fifo_len / 2;
480 return fifo_len / 4;
481 case 4:
482 default:
483 return fifo_len / 4;
484 }
485 return 0;
486}
487
488static int rpmusx_lmac_internal_loopback(rpm_t *rpm, int lmac_id, bool enable)
489{
490 u64 cfg;
491
492 cfg = rpm_read(rpm, lmac: lmac_id, RPM2_USX_PCSX_CONTROL1);
493
494 if (enable)
495 cfg |= RPM2_USX_PCS_LBK;
496 else
497 cfg &= ~RPM2_USX_PCS_LBK;
498 rpm_write(rpm, lmac: lmac_id, RPM2_USX_PCSX_CONTROL1, val: cfg);
499
500 return 0;
501}
502
503u32 rpm2_get_lmac_fifo_len(void *rpmd, int lmac_id)
504{
505 u64 hi_perf_lmac, lmac_info;
506 rpm_t *rpm = rpmd;
507 u8 num_lmacs;
508 u32 fifo_len;
509 u16 max_lmac;
510
511 lmac_info = rpm_read(rpm, lmac: 0, RPM2_CMRX_RX_LMACS);
512 /* LMACs are divided into two groups and each group
513 * gets half of the FIFO
514 * Group0 lmac_id range {0..3}
515 * Group1 lmac_id range {4..7}
516 */
517 max_lmac = (rpm_read(rpm, lmac: 0, CGX_CONST) >> 24) & 0xFF;
518 if (max_lmac > 4)
519 fifo_len = rpm->mac_ops->fifo_len / 2;
520 else
521 fifo_len = rpm->mac_ops->fifo_len;
522
523 if (lmac_id < 4) {
524 num_lmacs = hweight8(lmac_info & 0xF);
525 hi_perf_lmac = (lmac_info >> 8) & 0x3ULL;
526 } else {
527 num_lmacs = hweight8(lmac_info & 0xF0);
528 hi_perf_lmac = (lmac_info >> 10) & 0x3ULL;
529 hi_perf_lmac += 4;
530 }
531
532 switch (num_lmacs) {
533 case 1:
534 return fifo_len;
535 case 2:
536 return fifo_len / 2;
537 case 3:
538 /* LMAC marked as hi_perf gets half of the FIFO
539 * and rest 1/4th
540 */
541 if (lmac_id == hi_perf_lmac)
542 return fifo_len / 2;
543 return fifo_len / 4;
544 case 4:
545 default:
546 return fifo_len / 4;
547 }
548 return 0;
549}
550
551int rpm_lmac_internal_loopback(void *rpmd, int lmac_id, bool enable)
552{
553 rpm_t *rpm = rpmd;
554 struct lmac *lmac;
555 u64 cfg;
556
557 if (!is_lmac_valid(cgx: rpm, lmac_id))
558 return -ENODEV;
559
560 lmac = lmac_pdata(lmac_id, cgx: rpm);
561 if (lmac->lmac_type == LMAC_MODE_QSGMII ||
562 lmac->lmac_type == LMAC_MODE_SGMII) {
563 dev_err(&rpm->pdev->dev, "loopback not supported for LPC mode\n");
564 return 0;
565 }
566
567 if (is_dev_rpm2(rpmd: rpm) && is_mac_rpmusx(rpmd: rpm))
568 return rpmusx_lmac_internal_loopback(rpm, lmac_id, enable);
569
570 cfg = rpm_read(rpm, lmac: lmac_id, RPMX_MTI_PCS100X_CONTROL1);
571
572 if (enable)
573 cfg |= RPMX_MTI_PCS_LBK;
574 else
575 cfg &= ~RPMX_MTI_PCS_LBK;
576 rpm_write(rpm, lmac: lmac_id, RPMX_MTI_PCS100X_CONTROL1, val: cfg);
577
578 return 0;
579}
580
581void rpm_lmac_ptp_config(void *rpmd, int lmac_id, bool enable)
582{
583 rpm_t *rpm = rpmd;
584 u64 cfg;
585
586 if (!is_lmac_valid(cgx: rpm, lmac_id))
587 return;
588
589 cfg = rpm_read(rpm, lmac: lmac_id, RPMX_CMRX_CFG);
590 if (enable) {
591 cfg |= RPMX_RX_TS_PREPEND;
592 cfg |= RPMX_TX_PTP_1S_SUPPORT;
593 } else {
594 cfg &= ~RPMX_RX_TS_PREPEND;
595 cfg &= ~RPMX_TX_PTP_1S_SUPPORT;
596 }
597
598 rpm_write(rpm, lmac: lmac_id, RPMX_CMRX_CFG, val: cfg);
599
600 cfg = rpm_read(rpm, lmac: lmac_id, RPMX_MTI_MAC100X_XIF_MODE);
601
602 if (enable) {
603 cfg |= RPMX_ONESTEP_ENABLE;
604 cfg &= ~RPMX_TS_BINARY_MODE;
605 } else {
606 cfg &= ~RPMX_ONESTEP_ENABLE;
607 }
608
609 rpm_write(rpm, lmac: lmac_id, RPMX_MTI_MAC100X_XIF_MODE, val: cfg);
610}
611
612int rpm_lmac_pfc_config(void *rpmd, int lmac_id, u8 tx_pause, u8 rx_pause, u16 pfc_en)
613{
614 u64 cfg, class_en, pfc_class_mask_cfg;
615 rpm_t *rpm = rpmd;
616
617 if (!is_lmac_valid(cgx: rpm, lmac_id))
618 return -ENODEV;
619
620 pfc_class_mask_cfg = is_dev_rpm2(rpmd: rpm) ? RPM2_CMRX_PRT_CBFC_CTL :
621 RPMX_CMRX_PRT_CBFC_CTL;
622
623 cfg = rpm_read(rpm, lmac: lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG);
624 class_en = rpm_read(rpm, lmac: lmac_id, offset: pfc_class_mask_cfg);
625 pfc_en |= FIELD_GET(RPM_PFC_CLASS_MASK, class_en);
626
627 if (rx_pause) {
628 cfg &= ~(RPMX_MTI_MAC100X_COMMAND_CONFIG_RX_P_DISABLE |
629 RPMX_MTI_MAC100X_COMMAND_CONFIG_PAUSE_IGNORE);
630 } else {
631 cfg |= (RPMX_MTI_MAC100X_COMMAND_CONFIG_RX_P_DISABLE |
632 RPMX_MTI_MAC100X_COMMAND_CONFIG_PAUSE_IGNORE);
633 }
634
635 if (tx_pause) {
636 rpm_cfg_pfc_quanta_thresh(rpm, lmac_id, pfc_en, enable: true);
637 cfg &= ~RPMX_MTI_MAC100X_COMMAND_CONFIG_TX_P_DISABLE;
638 class_en = FIELD_SET(RPM_PFC_CLASS_MASK, pfc_en, class_en);
639 } else {
640 rpm_cfg_pfc_quanta_thresh(rpm, lmac_id, pfc_en: 0xfff, enable: false);
641 cfg |= RPMX_MTI_MAC100X_COMMAND_CONFIG_TX_P_DISABLE;
642 class_en = FIELD_SET(RPM_PFC_CLASS_MASK, 0, class_en);
643 }
644
645 if (!rx_pause && !tx_pause)
646 cfg &= ~RPMX_MTI_MAC100X_COMMAND_CONFIG_PFC_MODE;
647 else
648 cfg |= RPMX_MTI_MAC100X_COMMAND_CONFIG_PFC_MODE;
649
650 rpm_write(rpm, lmac: lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG, val: cfg);
651 rpm_write(rpm, lmac: lmac_id, offset: pfc_class_mask_cfg, val: class_en);
652
653 return 0;
654}
655
656int rpm_lmac_get_pfc_frm_cfg(void *rpmd, int lmac_id, u8 *tx_pause, u8 *rx_pause)
657{
658 rpm_t *rpm = rpmd;
659 u64 cfg;
660
661 if (!is_lmac_valid(cgx: rpm, lmac_id))
662 return -ENODEV;
663
664 cfg = rpm_read(rpm, lmac: lmac_id, RPMX_MTI_MAC100X_COMMAND_CONFIG);
665 if (cfg & RPMX_MTI_MAC100X_COMMAND_CONFIG_PFC_MODE) {
666 *rx_pause = !(cfg & RPMX_MTI_MAC100X_COMMAND_CONFIG_RX_P_DISABLE);
667 *tx_pause = !(cfg & RPMX_MTI_MAC100X_COMMAND_CONFIG_TX_P_DISABLE);
668 }
669
670 return 0;
671}
672
673int rpm_get_fec_stats(void *rpmd, int lmac_id, struct cgx_fec_stats_rsp *rsp)
674{
675 u64 val_lo, val_hi;
676 rpm_t *rpm = rpmd;
677 u64 cfg;
678
679 if (!is_lmac_valid(cgx: rpm, lmac_id))
680 return -ENODEV;
681
682 if (rpm->lmac_idmap[lmac_id]->link_info.fec == OTX2_FEC_NONE)
683 return 0;
684
685 if (rpm->lmac_idmap[lmac_id]->link_info.fec == OTX2_FEC_BASER) {
686 val_lo = rpm_read(rpm, lmac: lmac_id, RPMX_MTI_FCFECX_VL0_CCW_LO);
687 val_hi = rpm_read(rpm, lmac: lmac_id, RPMX_MTI_FCFECX_CW_HI);
688 rsp->fec_corr_blks = (val_hi << 16 | val_lo);
689
690 val_lo = rpm_read(rpm, lmac: lmac_id, RPMX_MTI_FCFECX_VL0_NCCW_LO);
691 val_hi = rpm_read(rpm, lmac: lmac_id, RPMX_MTI_FCFECX_CW_HI);
692 rsp->fec_uncorr_blks = (val_hi << 16 | val_lo);
693
694 /* 50G uses 2 Physical serdes lines */
695 if (rpm->lmac_idmap[lmac_id]->link_info.lmac_type_id ==
696 LMAC_MODE_50G_R) {
697 val_lo = rpm_read(rpm, lmac: lmac_id,
698 RPMX_MTI_FCFECX_VL1_CCW_LO);
699 val_hi = rpm_read(rpm, lmac: lmac_id,
700 RPMX_MTI_FCFECX_CW_HI);
701 rsp->fec_corr_blks += (val_hi << 16 | val_lo);
702
703 val_lo = rpm_read(rpm, lmac: lmac_id,
704 RPMX_MTI_FCFECX_VL1_NCCW_LO);
705 val_hi = rpm_read(rpm, lmac: lmac_id,
706 RPMX_MTI_FCFECX_CW_HI);
707 rsp->fec_uncorr_blks += (val_hi << 16 | val_lo);
708 }
709 } else {
710 /* enable RS-FEC capture */
711 cfg = rpm_read(rpm, lmac: 0, RPMX_MTI_STAT_STATN_CONTROL);
712 cfg |= RPMX_RSFEC_RX_CAPTURE | BIT(lmac_id);
713 rpm_write(rpm, lmac: 0, RPMX_MTI_STAT_STATN_CONTROL, val: cfg);
714
715 val_lo = rpm_read(rpm, lmac: 0,
716 RPMX_MTI_RSFEC_STAT_COUNTER_CAPTURE_2);
717 val_hi = rpm_read(rpm, lmac: 0, RPMX_MTI_STAT_DATA_HI_CDC);
718 rsp->fec_corr_blks = (val_hi << 32 | val_lo);
719
720 val_lo = rpm_read(rpm, lmac: 0,
721 RPMX_MTI_RSFEC_STAT_COUNTER_CAPTURE_3);
722 val_hi = rpm_read(rpm, lmac: 0, RPMX_MTI_STAT_DATA_HI_CDC);
723 rsp->fec_uncorr_blks = (val_hi << 32 | val_lo);
724 }
725
726 return 0;
727}
728
729int rpm_lmac_reset(void *rpmd, int lmac_id, u8 pf_req_flr)
730{
731 u64 rx_logl_xon, cfg;
732 rpm_t *rpm = rpmd;
733
734 if (!is_lmac_valid(cgx: rpm, lmac_id))
735 return -ENODEV;
736
737 /* Resetting PFC related CSRs */
738 rx_logl_xon = is_dev_rpm2(rpmd: rpm) ? RPM2_CMRX_RX_LOGL_XON :
739 RPMX_CMRX_RX_LOGL_XON;
740 cfg = 0xff;
741
742 rpm_write(rpm, lmac: lmac_id, offset: rx_logl_xon, val: cfg);
743
744 if (pf_req_flr)
745 rpm_lmac_internal_loopback(rpmd: rpm, lmac_id, enable: false);
746
747 return 0;
748}
749

source code of linux/drivers/net/ethernet/marvell/octeontx2/af/rpm.c