xref: /linux/drivers/net/ethernet/marvell/octeontx2/af/mcs.c (revision 41c177cf354126a22443b5c80cec9fdd313e67e1)
1 // SPDX-License-Identifier: GPL-2.0
2 /* Marvell MCS driver
3  *
4  * Copyright (C) 2022 Marvell.
5  */
6 
7 #include <linux/bitfield.h>
8 #include <linux/delay.h>
9 #include <linux/device.h>
10 #include <linux/module.h>
11 #include <linux/pci.h>
12 
13 #include "mcs.h"
14 #include "mcs_reg.h"
15 
16 #define DRV_NAME	"Marvell MCS Driver"
17 
18 #define PCI_CFG_REG_BAR_NUM	0
19 
20 static const struct pci_device_id mcs_id_table[] = {
21 	{ PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, PCI_DEVID_CN10K_MCS) },
22 	{ 0, }  /* end of table */
23 };
24 
25 static LIST_HEAD(mcs_list);
26 
mcs_get_tx_secy_stats(struct mcs * mcs,struct mcs_secy_stats * stats,int id)27 void mcs_get_tx_secy_stats(struct mcs *mcs, struct mcs_secy_stats *stats, int id)
28 {
29 	u64 reg;
30 
31 	reg = MCSX_CSE_TX_MEM_SLAVE_IFOUTCTLBCPKTSX(id);
32 	stats->ctl_pkt_bcast_cnt = mcs_reg_read(mcs, reg);
33 
34 	reg = MCSX_CSE_TX_MEM_SLAVE_IFOUTCTLMCPKTSX(id);
35 	stats->ctl_pkt_mcast_cnt = mcs_reg_read(mcs, reg);
36 
37 	reg = MCSX_CSE_TX_MEM_SLAVE_IFOUTCTLOCTETSX(id);
38 	stats->ctl_octet_cnt = mcs_reg_read(mcs, reg);
39 
40 	reg = MCSX_CSE_TX_MEM_SLAVE_IFOUTCTLUCPKTSX(id);
41 	stats->ctl_pkt_ucast_cnt = mcs_reg_read(mcs, reg);
42 
43 	reg = MCSX_CSE_TX_MEM_SLAVE_IFOUTUNCTLBCPKTSX(id);
44 	stats->unctl_pkt_bcast_cnt = mcs_reg_read(mcs, reg);
45 
46 	reg = MCSX_CSE_TX_MEM_SLAVE_IFOUTUNCTLMCPKTSX(id);
47 	stats->unctl_pkt_mcast_cnt = mcs_reg_read(mcs, reg);
48 
49 	reg = MCSX_CSE_TX_MEM_SLAVE_IFOUTUNCTLOCTETSX(id);
50 	stats->unctl_octet_cnt = mcs_reg_read(mcs, reg);
51 
52 	reg = MCSX_CSE_TX_MEM_SLAVE_IFOUTUNCTLUCPKTSX(id);
53 	stats->unctl_pkt_ucast_cnt = mcs_reg_read(mcs, reg);
54 
55 	reg = MCSX_CSE_TX_MEM_SLAVE_OUTOCTETSSECYENCRYPTEDX(id);
56 	stats->octet_encrypted_cnt =  mcs_reg_read(mcs, reg);
57 
58 	reg = MCSX_CSE_TX_MEM_SLAVE_OUTOCTETSSECYPROTECTEDX(id);
59 	stats->octet_protected_cnt =  mcs_reg_read(mcs, reg);
60 
61 	reg = MCSX_CSE_TX_MEM_SLAVE_OUTPKTSSECYNOACTIVESAX(id);
62 	stats->pkt_noactivesa_cnt =  mcs_reg_read(mcs, reg);
63 
64 	reg = MCSX_CSE_TX_MEM_SLAVE_OUTPKTSSECYTOOLONGX(id);
65 	stats->pkt_toolong_cnt =  mcs_reg_read(mcs, reg);
66 
67 	reg = MCSX_CSE_TX_MEM_SLAVE_OUTPKTSSECYUNTAGGEDX(id);
68 	stats->pkt_untagged_cnt =  mcs_reg_read(mcs, reg);
69 }
70 
mcs_get_rx_secy_stats(struct mcs * mcs,struct mcs_secy_stats * stats,int id)71 void mcs_get_rx_secy_stats(struct mcs *mcs, struct mcs_secy_stats *stats, int id)
72 {
73 	u64 reg;
74 
75 	reg = MCSX_CSE_RX_MEM_SLAVE_IFINCTLBCPKTSX(id);
76 	stats->ctl_pkt_bcast_cnt = mcs_reg_read(mcs, reg);
77 
78 	reg = MCSX_CSE_RX_MEM_SLAVE_IFINCTLMCPKTSX(id);
79 	stats->ctl_pkt_mcast_cnt = mcs_reg_read(mcs, reg);
80 
81 	reg = MCSX_CSE_RX_MEM_SLAVE_IFINCTLOCTETSX(id);
82 	stats->ctl_octet_cnt = mcs_reg_read(mcs, reg);
83 
84 	reg = MCSX_CSE_RX_MEM_SLAVE_IFINCTLUCPKTSX(id);
85 	stats->ctl_pkt_ucast_cnt = mcs_reg_read(mcs, reg);
86 
87 	reg = MCSX_CSE_RX_MEM_SLAVE_IFINUNCTLBCPKTSX(id);
88 	stats->unctl_pkt_bcast_cnt = mcs_reg_read(mcs, reg);
89 
90 	reg = MCSX_CSE_RX_MEM_SLAVE_IFINUNCTLMCPKTSX(id);
91 	stats->unctl_pkt_mcast_cnt = mcs_reg_read(mcs, reg);
92 
93 	reg = MCSX_CSE_RX_MEM_SLAVE_IFINUNCTLOCTETSX(id);
94 	stats->unctl_octet_cnt = mcs_reg_read(mcs, reg);
95 
96 	reg = MCSX_CSE_RX_MEM_SLAVE_IFINUNCTLUCPKTSX(id);
97 	stats->unctl_pkt_ucast_cnt = mcs_reg_read(mcs, reg);
98 
99 	reg = MCSX_CSE_RX_MEM_SLAVE_INOCTETSSECYDECRYPTEDX(id);
100 	stats->octet_decrypted_cnt =  mcs_reg_read(mcs, reg);
101 
102 	reg = MCSX_CSE_RX_MEM_SLAVE_INOCTETSSECYVALIDATEX(id);
103 	stats->octet_validated_cnt =  mcs_reg_read(mcs, reg);
104 
105 	reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSCTRLPORTDISABLEDX(id);
106 	stats->pkt_port_disabled_cnt =  mcs_reg_read(mcs, reg);
107 
108 	reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSECYBADTAGX(id);
109 	stats->pkt_badtag_cnt =  mcs_reg_read(mcs, reg);
110 
111 	reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSECYNOSAX(id);
112 	stats->pkt_nosa_cnt = mcs_reg_read(mcs, reg);
113 
114 	reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSECYNOSAERRORX(id);
115 	stats->pkt_nosaerror_cnt = mcs_reg_read(mcs, reg);
116 
117 	reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSECYTAGGEDCTLX(id);
118 	stats->pkt_tagged_ctl_cnt = mcs_reg_read(mcs, reg);
119 
120 	reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSECYUNTAGGEDX(id);
121 	stats->pkt_untaged_cnt = mcs_reg_read(mcs, reg);
122 
123 	reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSECYCTLX(id);
124 	stats->pkt_ctl_cnt = mcs_reg_read(mcs, reg);
125 
126 	if (mcs->hw->mcs_blks > 1) {
127 		reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSECYNOTAGX(id);
128 		stats->pkt_notag_cnt = mcs_reg_read(mcs, reg);
129 	}
130 }
131 
mcs_get_flowid_stats(struct mcs * mcs,struct mcs_flowid_stats * stats,int id,int dir)132 void mcs_get_flowid_stats(struct mcs *mcs, struct mcs_flowid_stats *stats,
133 			  int id, int dir)
134 {
135 	u64 reg;
136 
137 	if (dir == MCS_RX)
138 		reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSFLOWIDTCAMHITX(id);
139 	else
140 		reg = MCSX_CSE_TX_MEM_SLAVE_OUTPKTSFLOWIDTCAMHITX(id);
141 
142 	stats->tcam_hit_cnt = mcs_reg_read(mcs, reg);
143 }
144 
mcs_get_port_stats(struct mcs * mcs,struct mcs_port_stats * stats,int id,int dir)145 void mcs_get_port_stats(struct mcs *mcs, struct mcs_port_stats *stats,
146 			int id, int dir)
147 {
148 	u64 reg;
149 
150 	if (dir == MCS_RX) {
151 		reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSFLOWIDTCAMMISSX(id);
152 		stats->tcam_miss_cnt = mcs_reg_read(mcs, reg);
153 
154 		reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSPARSEERRX(id);
155 		stats->parser_err_cnt = mcs_reg_read(mcs, reg);
156 		if (mcs->hw->mcs_blks > 1) {
157 			reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSEARLYPREEMPTERRX(id);
158 			stats->preempt_err_cnt = mcs_reg_read(mcs, reg);
159 		}
160 	} else {
161 		reg = MCSX_CSE_TX_MEM_SLAVE_OUTPKTSFLOWIDTCAMMISSX(id);
162 		stats->tcam_miss_cnt = mcs_reg_read(mcs, reg);
163 
164 		reg = MCSX_CSE_TX_MEM_SLAVE_OUTPKTSPARSEERRX(id);
165 		stats->parser_err_cnt = mcs_reg_read(mcs, reg);
166 
167 		reg = MCSX_CSE_TX_MEM_SLAVE_OUTPKTSSECTAGINSERTIONERRX(id);
168 		stats->sectag_insert_err_cnt = mcs_reg_read(mcs, reg);
169 	}
170 }
171 
mcs_get_sa_stats(struct mcs * mcs,struct mcs_sa_stats * stats,int id,int dir)172 void mcs_get_sa_stats(struct mcs *mcs, struct mcs_sa_stats *stats, int id, int dir)
173 {
174 	u64 reg;
175 
176 	if (dir == MCS_RX) {
177 		reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSAINVALIDX(id);
178 		stats->pkt_invalid_cnt = mcs_reg_read(mcs, reg);
179 
180 		reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSANOTUSINGSAERRORX(id);
181 		stats->pkt_nosaerror_cnt = mcs_reg_read(mcs, reg);
182 
183 		reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSANOTVALIDX(id);
184 		stats->pkt_notvalid_cnt = mcs_reg_read(mcs, reg);
185 
186 		reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSAOKX(id);
187 		stats->pkt_ok_cnt = mcs_reg_read(mcs, reg);
188 
189 		reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSAUNUSEDSAX(id);
190 		stats->pkt_nosa_cnt = mcs_reg_read(mcs, reg);
191 	} else {
192 		reg = MCSX_CSE_TX_MEM_SLAVE_OUTPKTSSAENCRYPTEDX(id);
193 		stats->pkt_encrypt_cnt = mcs_reg_read(mcs, reg);
194 
195 		reg = MCSX_CSE_TX_MEM_SLAVE_OUTPKTSSAPROTECTEDX(id);
196 		stats->pkt_protected_cnt = mcs_reg_read(mcs, reg);
197 	}
198 }
199 
mcs_get_sc_stats(struct mcs * mcs,struct mcs_sc_stats * stats,int id,int dir)200 void mcs_get_sc_stats(struct mcs *mcs, struct mcs_sc_stats *stats,
201 		      int id, int dir)
202 {
203 	u64 reg;
204 
205 	if (dir == MCS_RX) {
206 		reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSCCAMHITX(id);
207 		stats->hit_cnt = mcs_reg_read(mcs, reg);
208 
209 		reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSCINVALIDX(id);
210 		stats->pkt_invalid_cnt = mcs_reg_read(mcs, reg);
211 
212 		reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSCLATEORDELAYEDX(id);
213 		stats->pkt_late_cnt = mcs_reg_read(mcs, reg);
214 
215 		reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSCNOTVALIDX(id);
216 		stats->pkt_notvalid_cnt = mcs_reg_read(mcs, reg);
217 
218 		reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSCUNCHECKEDX(id);
219 		stats->pkt_unchecked_cnt = mcs_reg_read(mcs, reg);
220 
221 		if (mcs->hw->mcs_blks > 1) {
222 			reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSCDELAYEDX(id);
223 			stats->pkt_delay_cnt = mcs_reg_read(mcs, reg);
224 
225 			reg = MCSX_CSE_RX_MEM_SLAVE_INPKTSSCOKX(id);
226 			stats->pkt_ok_cnt = mcs_reg_read(mcs, reg);
227 		}
228 		if (mcs->hw->mcs_blks == 1) {
229 			reg = MCSX_CSE_RX_MEM_SLAVE_INOCTETSSCDECRYPTEDX(id);
230 			stats->octet_decrypt_cnt = mcs_reg_read(mcs, reg);
231 
232 			reg = MCSX_CSE_RX_MEM_SLAVE_INOCTETSSCVALIDATEX(id);
233 			stats->octet_validate_cnt = mcs_reg_read(mcs, reg);
234 		}
235 	} else {
236 		reg = MCSX_CSE_TX_MEM_SLAVE_OUTPKTSSCENCRYPTEDX(id);
237 		stats->pkt_encrypt_cnt = mcs_reg_read(mcs, reg);
238 
239 		reg = MCSX_CSE_TX_MEM_SLAVE_OUTPKTSSCPROTECTEDX(id);
240 		stats->pkt_protected_cnt = mcs_reg_read(mcs, reg);
241 
242 		if (mcs->hw->mcs_blks == 1) {
243 			reg = MCSX_CSE_TX_MEM_SLAVE_OUTOCTETSSCENCRYPTEDX(id);
244 			stats->octet_encrypt_cnt = mcs_reg_read(mcs, reg);
245 
246 			reg = MCSX_CSE_TX_MEM_SLAVE_OUTOCTETSSCPROTECTEDX(id);
247 			stats->octet_protected_cnt = mcs_reg_read(mcs, reg);
248 		}
249 	}
250 }
251 
mcs_clear_stats(struct mcs * mcs,u8 type,u8 id,int dir)252 void mcs_clear_stats(struct mcs *mcs, u8 type, u8 id, int dir)
253 {
254 	struct mcs_flowid_stats flowid_st;
255 	struct mcs_port_stats port_st;
256 	struct mcs_secy_stats secy_st;
257 	struct mcs_sc_stats sc_st;
258 	struct mcs_sa_stats sa_st;
259 	u64 reg;
260 
261 	if (dir == MCS_RX)
262 		reg = MCSX_CSE_RX_SLAVE_CTRL;
263 	else
264 		reg = MCSX_CSE_TX_SLAVE_CTRL;
265 
266 	mcs_reg_write(mcs, reg, BIT_ULL(0));
267 
268 	switch (type) {
269 	case MCS_FLOWID_STATS:
270 		mcs_get_flowid_stats(mcs, &flowid_st, id, dir);
271 		break;
272 	case MCS_SECY_STATS:
273 		if (dir == MCS_RX)
274 			mcs_get_rx_secy_stats(mcs, &secy_st, id);
275 		else
276 			mcs_get_tx_secy_stats(mcs, &secy_st, id);
277 		break;
278 	case MCS_SC_STATS:
279 		mcs_get_sc_stats(mcs, &sc_st, id, dir);
280 		break;
281 	case MCS_SA_STATS:
282 		mcs_get_sa_stats(mcs, &sa_st, id, dir);
283 		break;
284 	case MCS_PORT_STATS:
285 		mcs_get_port_stats(mcs, &port_st, id, dir);
286 		break;
287 	}
288 
289 	mcs_reg_write(mcs, reg, 0x0);
290 }
291 
mcs_clear_all_stats(struct mcs * mcs,u16 pcifunc,int dir)292 int mcs_clear_all_stats(struct mcs *mcs, u16 pcifunc, int dir)
293 {
294 	struct mcs_rsrc_map *map;
295 	int id;
296 
297 	if (dir == MCS_RX)
298 		map = &mcs->rx;
299 	else
300 		map = &mcs->tx;
301 
302 	/* Clear FLOWID stats */
303 	for (id = 0; id < map->flow_ids.max; id++) {
304 		if (map->flowid2pf_map[id] != pcifunc)
305 			continue;
306 		mcs_clear_stats(mcs, MCS_FLOWID_STATS, id, dir);
307 	}
308 
309 	/* Clear SECY stats */
310 	for (id = 0; id < map->secy.max; id++) {
311 		if (map->secy2pf_map[id] != pcifunc)
312 			continue;
313 		mcs_clear_stats(mcs, MCS_SECY_STATS, id, dir);
314 	}
315 
316 	/* Clear SC stats */
317 	for (id = 0; id < map->secy.max; id++) {
318 		if (map->sc2pf_map[id] != pcifunc)
319 			continue;
320 		mcs_clear_stats(mcs, MCS_SC_STATS, id, dir);
321 	}
322 
323 	/* Clear SA stats */
324 	for (id = 0; id < map->sa.max; id++) {
325 		if (map->sa2pf_map[id] != pcifunc)
326 			continue;
327 		mcs_clear_stats(mcs, MCS_SA_STATS, id, dir);
328 	}
329 	return 0;
330 }
331 
mcs_pn_table_write(struct mcs * mcs,u8 pn_id,u64 next_pn,u8 dir)332 void mcs_pn_table_write(struct mcs *mcs, u8 pn_id, u64 next_pn, u8 dir)
333 {
334 	u64 reg;
335 
336 	if (dir == MCS_RX)
337 		reg = MCSX_CPM_RX_SLAVE_SA_PN_TABLE_MEMX(pn_id);
338 	else
339 		reg = MCSX_CPM_TX_SLAVE_SA_PN_TABLE_MEMX(pn_id);
340 	mcs_reg_write(mcs, reg, next_pn);
341 }
342 
cn10kb_mcs_tx_sa_mem_map_write(struct mcs * mcs,struct mcs_tx_sc_sa_map * map)343 void cn10kb_mcs_tx_sa_mem_map_write(struct mcs *mcs, struct mcs_tx_sc_sa_map *map)
344 {
345 	u64 reg, val;
346 
347 	val = (map->sa_index0 & 0xFF) |
348 	      (map->sa_index1 & 0xFF) << 9 |
349 	      (map->rekey_ena & 0x1) << 18 |
350 	      (map->sa_index0_vld & 0x1) << 19 |
351 	      (map->sa_index1_vld & 0x1) << 20 |
352 	      (map->tx_sa_active & 0x1) << 21 |
353 	      map->sectag_sci << 22;
354 	reg = MCSX_CPM_TX_SLAVE_SA_MAP_MEM_0X(map->sc_id);
355 	mcs_reg_write(mcs, reg, val);
356 
357 	val = map->sectag_sci >> 42;
358 	reg = MCSX_CPM_TX_SLAVE_SA_MAP_MEM_1X(map->sc_id);
359 	mcs_reg_write(mcs, reg, val);
360 }
361 
cn10kb_mcs_rx_sa_mem_map_write(struct mcs * mcs,struct mcs_rx_sc_sa_map * map)362 void cn10kb_mcs_rx_sa_mem_map_write(struct mcs *mcs, struct mcs_rx_sc_sa_map *map)
363 {
364 	u64 val, reg;
365 
366 	val = (map->sa_index & 0xFF) | map->sa_in_use << 9;
367 
368 	reg = MCSX_CPM_RX_SLAVE_SA_MAP_MEMX((4 * map->sc_id) + map->an);
369 	mcs_reg_write(mcs, reg, val);
370 }
371 
mcs_sa_plcy_write(struct mcs * mcs,u64 * plcy,int sa_id,int dir)372 void mcs_sa_plcy_write(struct mcs *mcs, u64 *plcy, int sa_id, int dir)
373 {
374 	int reg_id;
375 	u64 reg;
376 
377 	if (dir == MCS_RX) {
378 		for (reg_id = 0; reg_id < 8; reg_id++) {
379 			reg =  MCSX_CPM_RX_SLAVE_SA_PLCY_MEMX(reg_id, sa_id);
380 			mcs_reg_write(mcs, reg, plcy[reg_id]);
381 		}
382 	} else {
383 		for (reg_id = 0; reg_id < 9; reg_id++) {
384 			reg =  MCSX_CPM_TX_SLAVE_SA_PLCY_MEMX(reg_id, sa_id);
385 			mcs_reg_write(mcs, reg, plcy[reg_id]);
386 		}
387 	}
388 }
389 
mcs_ena_dis_sc_cam_entry(struct mcs * mcs,int sc_id,int ena)390 void mcs_ena_dis_sc_cam_entry(struct mcs *mcs, int sc_id, int ena)
391 {
392 	u64 reg, val;
393 
394 	reg = MCSX_CPM_RX_SLAVE_SC_CAM_ENA(0);
395 	if (sc_id > 63)
396 		reg = MCSX_CPM_RX_SLAVE_SC_CAM_ENA(1);
397 
398 	if (ena)
399 		val = mcs_reg_read(mcs, reg) | BIT_ULL(sc_id);
400 	else
401 		val = mcs_reg_read(mcs, reg) & ~BIT_ULL(sc_id);
402 
403 	mcs_reg_write(mcs, reg, val);
404 }
405 
mcs_rx_sc_cam_write(struct mcs * mcs,u64 sci,u64 secy,int sc_id)406 void mcs_rx_sc_cam_write(struct mcs *mcs, u64 sci, u64 secy, int sc_id)
407 {
408 	mcs_reg_write(mcs, MCSX_CPM_RX_SLAVE_SC_CAMX(0, sc_id), sci);
409 	mcs_reg_write(mcs, MCSX_CPM_RX_SLAVE_SC_CAMX(1, sc_id), secy);
410 	/* Enable SC CAM */
411 	mcs_ena_dis_sc_cam_entry(mcs, sc_id, true);
412 }
413 
mcs_secy_plcy_write(struct mcs * mcs,u64 plcy,int secy_id,int dir)414 void mcs_secy_plcy_write(struct mcs *mcs, u64 plcy, int secy_id, int dir)
415 {
416 	u64 reg;
417 
418 	if (dir == MCS_RX)
419 		reg = MCSX_CPM_RX_SLAVE_SECY_PLCY_MEM_0X(secy_id);
420 	else
421 		reg = MCSX_CPM_TX_SLAVE_SECY_PLCY_MEMX(secy_id);
422 
423 	mcs_reg_write(mcs, reg, plcy);
424 
425 	if (mcs->hw->mcs_blks == 1 && dir == MCS_RX)
426 		mcs_reg_write(mcs, MCSX_CPM_RX_SLAVE_SECY_PLCY_MEM_1X(secy_id), 0x0ull);
427 }
428 
cn10kb_mcs_flowid_secy_map(struct mcs * mcs,struct secy_mem_map * map,int dir)429 void cn10kb_mcs_flowid_secy_map(struct mcs *mcs, struct secy_mem_map *map, int dir)
430 {
431 	u64 reg, val;
432 
433 	val = (map->secy & 0x7F) | (map->ctrl_pkt & 0x1) << 8;
434 	if (dir == MCS_RX) {
435 		reg = MCSX_CPM_RX_SLAVE_SECY_MAP_MEMX(map->flow_id);
436 	} else {
437 		val |= (map->sc & 0x7F) << 9;
438 		reg = MCSX_CPM_TX_SLAVE_SECY_MAP_MEM_0X(map->flow_id);
439 	}
440 
441 	mcs_reg_write(mcs, reg, val);
442 }
443 
mcs_ena_dis_flowid_entry(struct mcs * mcs,int flow_id,int dir,int ena)444 void mcs_ena_dis_flowid_entry(struct mcs *mcs, int flow_id, int dir, int ena)
445 {
446 	u64 reg, val;
447 
448 	if (dir == MCS_RX) {
449 		reg = MCSX_CPM_RX_SLAVE_FLOWID_TCAM_ENA_0;
450 		if (flow_id > 63)
451 			reg = MCSX_CPM_RX_SLAVE_FLOWID_TCAM_ENA_1;
452 	} else {
453 		reg = MCSX_CPM_TX_SLAVE_FLOWID_TCAM_ENA_0;
454 		if (flow_id > 63)
455 			reg = MCSX_CPM_TX_SLAVE_FLOWID_TCAM_ENA_1;
456 	}
457 
458 	/* Enable/Disable the tcam entry */
459 	if (ena)
460 		val = mcs_reg_read(mcs, reg) | BIT_ULL(flow_id);
461 	else
462 		val = mcs_reg_read(mcs, reg) & ~BIT_ULL(flow_id);
463 
464 	mcs_reg_write(mcs, reg, val);
465 }
466 
mcs_flowid_entry_write(struct mcs * mcs,u64 * data,u64 * mask,int flow_id,int dir)467 void mcs_flowid_entry_write(struct mcs *mcs, u64 *data, u64 *mask, int flow_id, int dir)
468 {
469 	int reg_id;
470 	u64 reg;
471 
472 	if (dir == MCS_RX) {
473 		for (reg_id = 0; reg_id < 4; reg_id++) {
474 			reg = MCSX_CPM_RX_SLAVE_FLOWID_TCAM_DATAX(reg_id, flow_id);
475 			mcs_reg_write(mcs, reg, data[reg_id]);
476 		}
477 		for (reg_id = 0; reg_id < 4; reg_id++) {
478 			reg = MCSX_CPM_RX_SLAVE_FLOWID_TCAM_MASKX(reg_id, flow_id);
479 			mcs_reg_write(mcs, reg, mask[reg_id]);
480 		}
481 	} else {
482 		for (reg_id = 0; reg_id < 4; reg_id++) {
483 			reg = MCSX_CPM_TX_SLAVE_FLOWID_TCAM_DATAX(reg_id, flow_id);
484 			mcs_reg_write(mcs, reg, data[reg_id]);
485 		}
486 		for (reg_id = 0; reg_id < 4; reg_id++) {
487 			reg = MCSX_CPM_TX_SLAVE_FLOWID_TCAM_MASKX(reg_id, flow_id);
488 			mcs_reg_write(mcs, reg, mask[reg_id]);
489 		}
490 	}
491 }
492 
mcs_install_flowid_bypass_entry(struct mcs * mcs)493 int mcs_install_flowid_bypass_entry(struct mcs *mcs)
494 {
495 	int flow_id, secy_id, reg_id;
496 	struct secy_mem_map map;
497 	u64 reg, plcy = 0;
498 
499 	/* Flow entry */
500 	flow_id = mcs->hw->tcam_entries - MCS_RSRC_RSVD_CNT;
501 	__set_bit(flow_id, mcs->rx.flow_ids.bmap);
502 	__set_bit(flow_id, mcs->tx.flow_ids.bmap);
503 
504 	for (reg_id = 0; reg_id < 4; reg_id++) {
505 		reg = MCSX_CPM_RX_SLAVE_FLOWID_TCAM_MASKX(reg_id, flow_id);
506 		mcs_reg_write(mcs, reg, GENMASK_ULL(63, 0));
507 	}
508 	for (reg_id = 0; reg_id < 4; reg_id++) {
509 		reg = MCSX_CPM_TX_SLAVE_FLOWID_TCAM_MASKX(reg_id, flow_id);
510 		mcs_reg_write(mcs, reg, GENMASK_ULL(63, 0));
511 	}
512 	/* secy */
513 	secy_id = mcs->hw->secy_entries - MCS_RSRC_RSVD_CNT;
514 	__set_bit(secy_id, mcs->rx.secy.bmap);
515 	__set_bit(secy_id, mcs->tx.secy.bmap);
516 
517 	/* Set validate frames to NULL and enable control port */
518 	plcy = 0x7ull;
519 	if (mcs->hw->mcs_blks > 1)
520 		plcy = BIT_ULL(0) | 0x3ull << 4;
521 	mcs_secy_plcy_write(mcs, plcy, secy_id, MCS_RX);
522 
523 	/* Enable control port and set mtu to max */
524 	plcy = BIT_ULL(0) | GENMASK_ULL(43, 28);
525 	if (mcs->hw->mcs_blks > 1)
526 		plcy = BIT_ULL(0) | GENMASK_ULL(63, 48);
527 	mcs_secy_plcy_write(mcs, plcy, secy_id, MCS_TX);
528 
529 	/* Map flowid to secy */
530 	map.secy = secy_id;
531 	map.ctrl_pkt = 0;
532 	map.flow_id = flow_id;
533 	mcs->mcs_ops->mcs_flowid_secy_map(mcs, &map, MCS_RX);
534 	map.sc = secy_id;
535 	mcs->mcs_ops->mcs_flowid_secy_map(mcs, &map, MCS_TX);
536 
537 	/* Enable Flowid entry */
538 	mcs_ena_dis_flowid_entry(mcs, flow_id, MCS_RX, true);
539 	mcs_ena_dis_flowid_entry(mcs, flow_id, MCS_TX, true);
540 
541 	return 0;
542 }
543 
mcs_clear_secy_plcy(struct mcs * mcs,int secy_id,int dir)544 void mcs_clear_secy_plcy(struct mcs *mcs, int secy_id, int dir)
545 {
546 	struct mcs_rsrc_map *map;
547 	int flow_id;
548 
549 	if (dir == MCS_RX)
550 		map = &mcs->rx;
551 	else
552 		map = &mcs->tx;
553 
554 	/* Clear secy memory to zero */
555 	mcs_secy_plcy_write(mcs, 0, secy_id, dir);
556 
557 	/* Disable the tcam entry using this secy */
558 	for (flow_id = 0; flow_id < map->flow_ids.max; flow_id++) {
559 		if (map->flowid2secy_map[flow_id] != secy_id)
560 			continue;
561 		mcs_ena_dis_flowid_entry(mcs, flow_id, dir, false);
562 	}
563 }
564 
mcs_alloc_ctrlpktrule(struct rsrc_bmap * rsrc,u16 * pf_map,u16 offset,u16 pcifunc)565 int mcs_alloc_ctrlpktrule(struct rsrc_bmap *rsrc, u16 *pf_map, u16 offset, u16 pcifunc)
566 {
567 	int rsrc_id;
568 
569 	if (!rsrc->bmap)
570 		return -EINVAL;
571 
572 	rsrc_id = bitmap_find_next_zero_area(rsrc->bmap, rsrc->max, offset, 1, 0);
573 	if (rsrc_id >= rsrc->max)
574 		return -ENOSPC;
575 
576 	bitmap_set(rsrc->bmap, rsrc_id, 1);
577 	pf_map[rsrc_id] = pcifunc;
578 
579 	return rsrc_id;
580 }
581 
mcs_free_ctrlpktrule(struct mcs * mcs,struct mcs_free_ctrl_pkt_rule_req * req)582 int mcs_free_ctrlpktrule(struct mcs *mcs, struct mcs_free_ctrl_pkt_rule_req *req)
583 {
584 	u16 pcifunc = req->hdr.pcifunc;
585 	struct mcs_rsrc_map *map;
586 	u64 dis, reg;
587 	int id, rc;
588 
589 	reg = (req->dir == MCS_RX) ? MCSX_PEX_RX_SLAVE_RULE_ENABLE : MCSX_PEX_TX_SLAVE_RULE_ENABLE;
590 	map = (req->dir == MCS_RX) ? &mcs->rx : &mcs->tx;
591 
592 	if (req->all) {
593 		for (id = 0; id < map->ctrlpktrule.max; id++) {
594 			if (map->ctrlpktrule2pf_map[id] != pcifunc)
595 				continue;
596 			mcs_free_rsrc(&map->ctrlpktrule, map->ctrlpktrule2pf_map, id, pcifunc);
597 			dis = mcs_reg_read(mcs, reg);
598 			dis &= ~BIT_ULL(id);
599 			mcs_reg_write(mcs, reg, dis);
600 		}
601 		return 0;
602 	}
603 
604 	rc = mcs_free_rsrc(&map->ctrlpktrule, map->ctrlpktrule2pf_map, req->rule_idx, pcifunc);
605 	dis = mcs_reg_read(mcs, reg);
606 	dis &= ~BIT_ULL(req->rule_idx);
607 	mcs_reg_write(mcs, reg, dis);
608 
609 	return rc;
610 }
611 
mcs_ctrlpktrule_write(struct mcs * mcs,struct mcs_ctrl_pkt_rule_write_req * req)612 int mcs_ctrlpktrule_write(struct mcs *mcs, struct mcs_ctrl_pkt_rule_write_req *req)
613 {
614 	u64 reg, enb;
615 	u64 idx;
616 
617 	switch (req->rule_type) {
618 	case MCS_CTRL_PKT_RULE_TYPE_ETH:
619 		req->data0 &= GENMASK(15, 0);
620 		if (req->data0 != ETH_P_PAE)
621 			return -EINVAL;
622 
623 		idx = req->rule_idx - MCS_CTRLPKT_ETYPE_RULE_OFFSET;
624 		reg = (req->dir == MCS_RX) ? MCSX_PEX_RX_SLAVE_RULE_ETYPE_CFGX(idx) :
625 		      MCSX_PEX_TX_SLAVE_RULE_ETYPE_CFGX(idx);
626 
627 		mcs_reg_write(mcs, reg, req->data0);
628 		break;
629 	case MCS_CTRL_PKT_RULE_TYPE_DA:
630 		if (!(req->data0 & BIT_ULL(40)))
631 			return -EINVAL;
632 
633 		idx = req->rule_idx - MCS_CTRLPKT_DA_RULE_OFFSET;
634 		reg = (req->dir == MCS_RX) ? MCSX_PEX_RX_SLAVE_RULE_DAX(idx) :
635 		      MCSX_PEX_TX_SLAVE_RULE_DAX(idx);
636 
637 		mcs_reg_write(mcs, reg, req->data0 & GENMASK_ULL(47, 0));
638 		break;
639 	case MCS_CTRL_PKT_RULE_TYPE_RANGE:
640 		if (!(req->data0 & BIT_ULL(40)) || !(req->data1 & BIT_ULL(40)))
641 			return -EINVAL;
642 
643 		idx = req->rule_idx - MCS_CTRLPKT_DA_RANGE_RULE_OFFSET;
644 		if (req->dir == MCS_RX) {
645 			reg = MCSX_PEX_RX_SLAVE_RULE_DA_RANGE_MINX(idx);
646 			mcs_reg_write(mcs, reg, req->data0 & GENMASK_ULL(47, 0));
647 			reg = MCSX_PEX_RX_SLAVE_RULE_DA_RANGE_MAXX(idx);
648 			mcs_reg_write(mcs, reg, req->data1 & GENMASK_ULL(47, 0));
649 		} else {
650 			reg = MCSX_PEX_TX_SLAVE_RULE_DA_RANGE_MINX(idx);
651 			mcs_reg_write(mcs, reg, req->data0 & GENMASK_ULL(47, 0));
652 			reg = MCSX_PEX_TX_SLAVE_RULE_DA_RANGE_MAXX(idx);
653 			mcs_reg_write(mcs, reg, req->data1 & GENMASK_ULL(47, 0));
654 		}
655 		break;
656 	case MCS_CTRL_PKT_RULE_TYPE_COMBO:
657 		req->data2 &= GENMASK(15, 0);
658 		if (req->data2 != ETH_P_PAE || !(req->data0 & BIT_ULL(40)) ||
659 		    !(req->data1 & BIT_ULL(40)))
660 			return -EINVAL;
661 
662 		idx = req->rule_idx - MCS_CTRLPKT_COMBO_RULE_OFFSET;
663 		if (req->dir == MCS_RX) {
664 			reg = MCSX_PEX_RX_SLAVE_RULE_COMBO_MINX(idx);
665 			mcs_reg_write(mcs, reg, req->data0 & GENMASK_ULL(47, 0));
666 			reg = MCSX_PEX_RX_SLAVE_RULE_COMBO_MAXX(idx);
667 			mcs_reg_write(mcs, reg, req->data1 & GENMASK_ULL(47, 0));
668 			reg = MCSX_PEX_RX_SLAVE_RULE_COMBO_ETX(idx);
669 			mcs_reg_write(mcs, reg, req->data2);
670 		} else {
671 			reg = MCSX_PEX_TX_SLAVE_RULE_COMBO_MINX(idx);
672 			mcs_reg_write(mcs, reg, req->data0 & GENMASK_ULL(47, 0));
673 			reg = MCSX_PEX_TX_SLAVE_RULE_COMBO_MAXX(idx);
674 			mcs_reg_write(mcs, reg, req->data1 & GENMASK_ULL(47, 0));
675 			reg = MCSX_PEX_TX_SLAVE_RULE_COMBO_ETX(idx);
676 			mcs_reg_write(mcs, reg, req->data2);
677 		}
678 		break;
679 	case MCS_CTRL_PKT_RULE_TYPE_MAC:
680 		if (!(req->data0 & BIT_ULL(40)))
681 			return -EINVAL;
682 
683 		idx = req->rule_idx - MCS_CTRLPKT_MAC_EN_RULE_OFFSET;
684 		reg = (req->dir == MCS_RX) ? MCSX_PEX_RX_SLAVE_RULE_MAC :
685 		      MCSX_PEX_TX_SLAVE_RULE_MAC;
686 
687 		mcs_reg_write(mcs, reg, req->data0 & GENMASK_ULL(47, 0));
688 		break;
689 	}
690 
691 	reg = (req->dir == MCS_RX) ? MCSX_PEX_RX_SLAVE_RULE_ENABLE : MCSX_PEX_TX_SLAVE_RULE_ENABLE;
692 
693 	enb = mcs_reg_read(mcs, reg);
694 	enb |= BIT_ULL(req->rule_idx);
695 	mcs_reg_write(mcs, reg, enb);
696 
697 	return 0;
698 }
699 
mcs_free_rsrc(struct rsrc_bmap * rsrc,u16 * pf_map,int rsrc_id,u16 pcifunc)700 int mcs_free_rsrc(struct rsrc_bmap *rsrc, u16 *pf_map, int rsrc_id, u16 pcifunc)
701 {
702 	/* Check if the rsrc_id is mapped to PF/VF */
703 	if (pf_map[rsrc_id] != pcifunc)
704 		return -EINVAL;
705 
706 	rvu_free_rsrc(rsrc, rsrc_id);
707 	pf_map[rsrc_id] = 0;
708 	return 0;
709 }
710 
711 /* Free all the cam resources mapped to pf */
mcs_free_all_rsrc(struct mcs * mcs,int dir,u16 pcifunc)712 int mcs_free_all_rsrc(struct mcs *mcs, int dir, u16 pcifunc)
713 {
714 	struct mcs_rsrc_map *map;
715 	int id;
716 
717 	if (dir == MCS_RX)
718 		map = &mcs->rx;
719 	else
720 		map = &mcs->tx;
721 
722 	/* free tcam entries */
723 	for (id = 0; id < map->flow_ids.max; id++) {
724 		if (map->flowid2pf_map[id] != pcifunc)
725 			continue;
726 		mcs_free_rsrc(&map->flow_ids, map->flowid2pf_map,
727 			      id, pcifunc);
728 		mcs_ena_dis_flowid_entry(mcs, id, dir, false);
729 	}
730 
731 	/* free secy entries */
732 	for (id = 0; id < map->secy.max; id++) {
733 		if (map->secy2pf_map[id] != pcifunc)
734 			continue;
735 		mcs_free_rsrc(&map->secy, map->secy2pf_map,
736 			      id, pcifunc);
737 		mcs_clear_secy_plcy(mcs, id, dir);
738 	}
739 
740 	/* free sc entries */
741 	for (id = 0; id < map->secy.max; id++) {
742 		if (map->sc2pf_map[id] != pcifunc)
743 			continue;
744 		mcs_free_rsrc(&map->sc, map->sc2pf_map, id, pcifunc);
745 
746 		/* Disable SC CAM only on RX side */
747 		if (dir == MCS_RX)
748 			mcs_ena_dis_sc_cam_entry(mcs, id, false);
749 	}
750 
751 	/* free sa entries */
752 	for (id = 0; id < map->sa.max; id++) {
753 		if (map->sa2pf_map[id] != pcifunc)
754 			continue;
755 		mcs_free_rsrc(&map->sa, map->sa2pf_map, id, pcifunc);
756 	}
757 	return 0;
758 }
759 
mcs_alloc_rsrc(struct rsrc_bmap * rsrc,u16 * pf_map,u16 pcifunc)760 int mcs_alloc_rsrc(struct rsrc_bmap *rsrc, u16 *pf_map, u16 pcifunc)
761 {
762 	int rsrc_id;
763 
764 	rsrc_id = rvu_alloc_rsrc(rsrc);
765 	if (rsrc_id < 0)
766 		return -ENOMEM;
767 	pf_map[rsrc_id] = pcifunc;
768 	return rsrc_id;
769 }
770 
mcs_alloc_all_rsrc(struct mcs * mcs,u8 * flow_id,u8 * secy_id,u8 * sc_id,u8 * sa1_id,u8 * sa2_id,u16 pcifunc,int dir)771 int mcs_alloc_all_rsrc(struct mcs *mcs, u8 *flow_id, u8 *secy_id,
772 		       u8 *sc_id, u8 *sa1_id, u8 *sa2_id, u16 pcifunc, int dir)
773 {
774 	struct mcs_rsrc_map *map;
775 	int id;
776 
777 	if (dir == MCS_RX)
778 		map = &mcs->rx;
779 	else
780 		map = &mcs->tx;
781 
782 	id = mcs_alloc_rsrc(&map->flow_ids, map->flowid2pf_map, pcifunc);
783 	if (id < 0)
784 		return -ENOMEM;
785 	*flow_id = id;
786 
787 	id = mcs_alloc_rsrc(&map->secy, map->secy2pf_map, pcifunc);
788 	if (id < 0)
789 		return -ENOMEM;
790 	*secy_id = id;
791 
792 	id = mcs_alloc_rsrc(&map->sc, map->sc2pf_map, pcifunc);
793 	if (id < 0)
794 		return -ENOMEM;
795 	*sc_id = id;
796 
797 	id =  mcs_alloc_rsrc(&map->sa, map->sa2pf_map, pcifunc);
798 	if (id < 0)
799 		return -ENOMEM;
800 	*sa1_id = id;
801 
802 	id =  mcs_alloc_rsrc(&map->sa, map->sa2pf_map, pcifunc);
803 	if (id < 0)
804 		return -ENOMEM;
805 	*sa2_id = id;
806 
807 	return 0;
808 }
809 
cn10kb_mcs_tx_pn_wrapped_handler(struct mcs * mcs)810 static void cn10kb_mcs_tx_pn_wrapped_handler(struct mcs *mcs)
811 {
812 	struct mcs_intr_event event = { 0 };
813 	struct rsrc_bmap *sc_bmap;
814 	u64 val;
815 	int sc;
816 
817 	sc_bmap = &mcs->tx.sc;
818 
819 	event.mcs_id = mcs->mcs_id;
820 	event.intr_mask = MCS_CPM_TX_PACKET_XPN_EQ0_INT;
821 
822 	for_each_set_bit(sc, sc_bmap->bmap, mcs->hw->sc_entries) {
823 		val = mcs_reg_read(mcs, MCSX_CPM_TX_SLAVE_SA_MAP_MEM_0X(sc));
824 
825 		if (mcs->tx_sa_active[sc])
826 			/* SA_index1 was used and got expired */
827 			event.sa_id = (val >> 9) & 0xFF;
828 		else
829 			/* SA_index0 was used and got expired */
830 			event.sa_id = val & 0xFF;
831 
832 		event.pcifunc = mcs->tx.sa2pf_map[event.sa_id];
833 		mcs_add_intr_wq_entry(mcs, &event);
834 	}
835 }
836 
cn10kb_mcs_tx_pn_thresh_reached_handler(struct mcs * mcs)837 static void cn10kb_mcs_tx_pn_thresh_reached_handler(struct mcs *mcs)
838 {
839 	struct mcs_intr_event event = { 0 };
840 	struct rsrc_bmap *sc_bmap;
841 	u64 val, status;
842 	int sc;
843 
844 	sc_bmap = &mcs->tx.sc;
845 
846 	event.mcs_id = mcs->mcs_id;
847 	event.intr_mask = MCS_CPM_TX_PN_THRESH_REACHED_INT;
848 
849 	/* TX SA interrupt is raised only if autorekey is enabled.
850 	 * MCS_CPM_TX_SLAVE_SA_MAP_MEM_0X[sc].tx_sa_active bit gets toggled if
851 	 * one of two SAs mapped to SC gets expired. If tx_sa_active=0 implies
852 	 * SA in SA_index1 got expired else SA in SA_index0 got expired.
853 	 */
854 	for_each_set_bit(sc, sc_bmap->bmap, mcs->hw->sc_entries) {
855 		val = mcs_reg_read(mcs, MCSX_CPM_TX_SLAVE_SA_MAP_MEM_0X(sc));
856 		/* Auto rekey is enable */
857 		if (!((val >> 18) & 0x1))
858 			continue;
859 
860 		status = (val >> 21) & 0x1;
861 
862 		/* Check if tx_sa_active status had changed */
863 		if (status == mcs->tx_sa_active[sc])
864 			continue;
865 		/* SA_index0 is expired */
866 		if (status)
867 			event.sa_id = val & 0xFF;
868 		else
869 			event.sa_id = (val >> 9) & 0xFF;
870 
871 		event.pcifunc = mcs->tx.sa2pf_map[event.sa_id];
872 		mcs_add_intr_wq_entry(mcs, &event);
873 	}
874 }
875 
mcs_rx_pn_thresh_reached_handler(struct mcs * mcs)876 static void mcs_rx_pn_thresh_reached_handler(struct mcs *mcs)
877 {
878 	struct mcs_intr_event event = { 0 };
879 	int sa, reg;
880 	u64 intr;
881 
882 	/* Check expired SAs */
883 	for (reg = 0; reg < (mcs->hw->sa_entries / 64); reg++) {
884 		/* Bit high in *PN_THRESH_REACHEDX implies
885 		 * corresponding SAs are expired.
886 		 */
887 		intr = mcs_reg_read(mcs, MCSX_CPM_RX_SLAVE_PN_THRESH_REACHEDX(reg));
888 		for (sa = 0; sa < 64; sa++) {
889 			if (!(intr & BIT_ULL(sa)))
890 				continue;
891 
892 			event.mcs_id = mcs->mcs_id;
893 			event.intr_mask = MCS_CPM_RX_PN_THRESH_REACHED_INT;
894 			event.sa_id = sa + (reg * 64);
895 			event.pcifunc = mcs->rx.sa2pf_map[event.sa_id];
896 			mcs_add_intr_wq_entry(mcs, &event);
897 		}
898 	}
899 }
900 
mcs_rx_misc_intr_handler(struct mcs * mcs,u64 intr)901 static void mcs_rx_misc_intr_handler(struct mcs *mcs, u64 intr)
902 {
903 	struct mcs_intr_event event = { 0 };
904 
905 	event.mcs_id = mcs->mcs_id;
906 	event.pcifunc = mcs->pf_map[0];
907 
908 	if (intr & MCS_CPM_RX_INT_SECTAG_V_EQ1)
909 		event.intr_mask = MCS_CPM_RX_SECTAG_V_EQ1_INT;
910 	if (intr & MCS_CPM_RX_INT_SECTAG_E_EQ0_C_EQ1)
911 		event.intr_mask |= MCS_CPM_RX_SECTAG_E_EQ0_C_EQ1_INT;
912 	if (intr & MCS_CPM_RX_INT_SL_GTE48)
913 		event.intr_mask |= MCS_CPM_RX_SECTAG_SL_GTE48_INT;
914 	if (intr & MCS_CPM_RX_INT_ES_EQ1_SC_EQ1)
915 		event.intr_mask |= MCS_CPM_RX_SECTAG_ES_EQ1_SC_EQ1_INT;
916 	if (intr & MCS_CPM_RX_INT_SC_EQ1_SCB_EQ1)
917 		event.intr_mask |= MCS_CPM_RX_SECTAG_SC_EQ1_SCB_EQ1_INT;
918 	if (intr & MCS_CPM_RX_INT_PACKET_XPN_EQ0)
919 		event.intr_mask |= MCS_CPM_RX_PACKET_XPN_EQ0_INT;
920 
921 	mcs_add_intr_wq_entry(mcs, &event);
922 }
923 
mcs_tx_misc_intr_handler(struct mcs * mcs,u64 intr)924 static void mcs_tx_misc_intr_handler(struct mcs *mcs, u64 intr)
925 {
926 	struct mcs_intr_event event = { 0 };
927 
928 	if (!(intr & MCS_CPM_TX_INT_SA_NOT_VALID))
929 		return;
930 
931 	event.mcs_id = mcs->mcs_id;
932 	event.pcifunc = mcs->pf_map[0];
933 
934 	event.intr_mask = MCS_CPM_TX_SA_NOT_VALID_INT;
935 
936 	mcs_add_intr_wq_entry(mcs, &event);
937 }
938 
cn10kb_mcs_bbe_intr_handler(struct mcs * mcs,u64 intr,enum mcs_direction dir)939 void cn10kb_mcs_bbe_intr_handler(struct mcs *mcs, u64 intr,
940 				 enum mcs_direction dir)
941 {
942 	u64 val, reg;
943 	int lmac;
944 
945 	if (!(intr & 0x6ULL))
946 		return;
947 
948 	if (intr & BIT_ULL(1))
949 		reg = (dir == MCS_RX) ? MCSX_BBE_RX_SLAVE_DFIFO_OVERFLOW_0 :
950 					MCSX_BBE_TX_SLAVE_DFIFO_OVERFLOW_0;
951 	else
952 		reg = (dir == MCS_RX) ? MCSX_BBE_RX_SLAVE_PLFIFO_OVERFLOW_0 :
953 					MCSX_BBE_TX_SLAVE_PLFIFO_OVERFLOW_0;
954 	val = mcs_reg_read(mcs, reg);
955 
956 	/* policy/data over flow occurred */
957 	for (lmac = 0; lmac < mcs->hw->lmac_cnt; lmac++) {
958 		if (!(val & BIT_ULL(lmac)))
959 			continue;
960 		dev_warn(mcs->dev, "BEE:Policy or data overflow occurred on lmac:%d\n", lmac);
961 	}
962 }
963 
cn10kb_mcs_pab_intr_handler(struct mcs * mcs,u64 intr,enum mcs_direction dir)964 void cn10kb_mcs_pab_intr_handler(struct mcs *mcs, u64 intr,
965 				 enum mcs_direction dir)
966 {
967 	int lmac;
968 
969 	if (!(intr & 0xFFFFFULL))
970 		return;
971 
972 	for (lmac = 0; lmac < mcs->hw->lmac_cnt; lmac++) {
973 		if (intr & BIT_ULL(lmac))
974 			dev_warn(mcs->dev, "PAB: overflow occurred on lmac:%d\n", lmac);
975 	}
976 }
977 
mcs_ip_intr_handler(int irq,void * mcs_irq)978 static irqreturn_t mcs_ip_intr_handler(int irq, void *mcs_irq)
979 {
980 	struct mcs *mcs = (struct mcs *)mcs_irq;
981 	u64 intr, cpm_intr, bbe_intr, pab_intr;
982 
983 	/* Disable  the interrupt */
984 	mcs_reg_write(mcs, MCSX_IP_INT_ENA_W1C, BIT_ULL(0));
985 
986 	/* Check which block has interrupt*/
987 	intr = mcs_reg_read(mcs, MCSX_TOP_SLAVE_INT_SUM);
988 
989 	/* CPM RX */
990 	if (intr & MCS_CPM_RX_INT_ENA) {
991 		/* Check for PN thresh interrupt bit */
992 		cpm_intr = mcs_reg_read(mcs, MCSX_CPM_RX_SLAVE_RX_INT);
993 
994 		if (cpm_intr & MCS_CPM_RX_INT_PN_THRESH_REACHED)
995 			mcs_rx_pn_thresh_reached_handler(mcs);
996 
997 		if (cpm_intr & MCS_CPM_RX_INT_ALL)
998 			mcs_rx_misc_intr_handler(mcs, cpm_intr);
999 
1000 		/* Clear the interrupt */
1001 		mcs_reg_write(mcs, MCSX_CPM_RX_SLAVE_RX_INT, cpm_intr);
1002 	}
1003 
1004 	/* CPM TX */
1005 	if (intr & MCS_CPM_TX_INT_ENA) {
1006 		cpm_intr = mcs_reg_read(mcs, MCSX_CPM_TX_SLAVE_TX_INT);
1007 
1008 		if (cpm_intr & MCS_CPM_TX_INT_PN_THRESH_REACHED) {
1009 			if (mcs->hw->mcs_blks > 1)
1010 				cnf10kb_mcs_tx_pn_thresh_reached_handler(mcs);
1011 			else
1012 				cn10kb_mcs_tx_pn_thresh_reached_handler(mcs);
1013 		}
1014 
1015 		if (cpm_intr & MCS_CPM_TX_INT_SA_NOT_VALID)
1016 			mcs_tx_misc_intr_handler(mcs, cpm_intr);
1017 
1018 		if (cpm_intr & MCS_CPM_TX_INT_PACKET_XPN_EQ0) {
1019 			if (mcs->hw->mcs_blks > 1)
1020 				cnf10kb_mcs_tx_pn_wrapped_handler(mcs);
1021 			else
1022 				cn10kb_mcs_tx_pn_wrapped_handler(mcs);
1023 		}
1024 		/* Clear the interrupt */
1025 		mcs_reg_write(mcs, MCSX_CPM_TX_SLAVE_TX_INT, cpm_intr);
1026 	}
1027 
1028 	/* BBE RX */
1029 	if (intr & MCS_BBE_RX_INT_ENA) {
1030 		bbe_intr = mcs_reg_read(mcs, MCSX_BBE_RX_SLAVE_BBE_INT);
1031 		mcs->mcs_ops->mcs_bbe_intr_handler(mcs, bbe_intr, MCS_RX);
1032 
1033 		/* Clear the interrupt */
1034 		mcs_reg_write(mcs, MCSX_BBE_RX_SLAVE_BBE_INT_INTR_RW, 0);
1035 		mcs_reg_write(mcs, MCSX_BBE_RX_SLAVE_BBE_INT, bbe_intr);
1036 	}
1037 
1038 	/* BBE TX */
1039 	if (intr & MCS_BBE_TX_INT_ENA) {
1040 		bbe_intr = mcs_reg_read(mcs, MCSX_BBE_TX_SLAVE_BBE_INT);
1041 		mcs->mcs_ops->mcs_bbe_intr_handler(mcs, bbe_intr, MCS_TX);
1042 
1043 		/* Clear the interrupt */
1044 		mcs_reg_write(mcs, MCSX_BBE_TX_SLAVE_BBE_INT_INTR_RW, 0);
1045 		mcs_reg_write(mcs, MCSX_BBE_TX_SLAVE_BBE_INT, bbe_intr);
1046 	}
1047 
1048 	/* PAB RX */
1049 	if (intr & MCS_PAB_RX_INT_ENA) {
1050 		pab_intr = mcs_reg_read(mcs, MCSX_PAB_RX_SLAVE_PAB_INT);
1051 		mcs->mcs_ops->mcs_pab_intr_handler(mcs, pab_intr, MCS_RX);
1052 
1053 		/* Clear the interrupt */
1054 		mcs_reg_write(mcs, MCSX_PAB_RX_SLAVE_PAB_INT_INTR_RW, 0);
1055 		mcs_reg_write(mcs, MCSX_PAB_RX_SLAVE_PAB_INT, pab_intr);
1056 	}
1057 
1058 	/* PAB TX */
1059 	if (intr & MCS_PAB_TX_INT_ENA) {
1060 		pab_intr = mcs_reg_read(mcs, MCSX_PAB_TX_SLAVE_PAB_INT);
1061 		mcs->mcs_ops->mcs_pab_intr_handler(mcs, pab_intr, MCS_TX);
1062 
1063 		/* Clear the interrupt */
1064 		mcs_reg_write(mcs, MCSX_PAB_TX_SLAVE_PAB_INT_INTR_RW, 0);
1065 		mcs_reg_write(mcs, MCSX_PAB_TX_SLAVE_PAB_INT, pab_intr);
1066 	}
1067 
1068 	/* Clear and enable the interrupt */
1069 	mcs_reg_write(mcs, MCSX_IP_INT, BIT_ULL(0));
1070 	mcs_reg_write(mcs, MCSX_IP_INT_ENA_W1S, BIT_ULL(0));
1071 
1072 	return IRQ_HANDLED;
1073 }
1074 
alloc_mem(struct mcs * mcs,int n)1075 static void *alloc_mem(struct mcs *mcs, int n)
1076 {
1077 	return devm_kcalloc(mcs->dev, n, sizeof(u16), GFP_KERNEL);
1078 }
1079 
mcs_alloc_struct_mem(struct mcs * mcs,struct mcs_rsrc_map * res)1080 static int mcs_alloc_struct_mem(struct mcs *mcs, struct mcs_rsrc_map *res)
1081 {
1082 	struct hwinfo *hw = mcs->hw;
1083 	int err;
1084 
1085 	res->flowid2pf_map = alloc_mem(mcs, hw->tcam_entries);
1086 	if (!res->flowid2pf_map)
1087 		return -ENOMEM;
1088 
1089 	res->secy2pf_map = alloc_mem(mcs, hw->secy_entries);
1090 	if (!res->secy2pf_map)
1091 		return -ENOMEM;
1092 
1093 	res->sc2pf_map = alloc_mem(mcs, hw->sc_entries);
1094 	if (!res->sc2pf_map)
1095 		return -ENOMEM;
1096 
1097 	res->sa2pf_map = alloc_mem(mcs, hw->sa_entries);
1098 	if (!res->sa2pf_map)
1099 		return -ENOMEM;
1100 
1101 	res->flowid2secy_map = alloc_mem(mcs, hw->tcam_entries);
1102 	if (!res->flowid2secy_map)
1103 		return -ENOMEM;
1104 
1105 	res->ctrlpktrule2pf_map = alloc_mem(mcs, MCS_MAX_CTRLPKT_RULES);
1106 	if (!res->ctrlpktrule2pf_map)
1107 		return -ENOMEM;
1108 
1109 	res->flow_ids.max = hw->tcam_entries - MCS_RSRC_RSVD_CNT;
1110 	err = rvu_alloc_bitmap(&res->flow_ids);
1111 	if (err)
1112 		return err;
1113 
1114 	res->secy.max = hw->secy_entries - MCS_RSRC_RSVD_CNT;
1115 	err = rvu_alloc_bitmap(&res->secy);
1116 	if (err)
1117 		return err;
1118 
1119 	res->sc.max = hw->sc_entries;
1120 	err = rvu_alloc_bitmap(&res->sc);
1121 	if (err)
1122 		return err;
1123 
1124 	res->sa.max = hw->sa_entries;
1125 	err = rvu_alloc_bitmap(&res->sa);
1126 	if (err)
1127 		return err;
1128 
1129 	res->ctrlpktrule.max = MCS_MAX_CTRLPKT_RULES;
1130 	err = rvu_alloc_bitmap(&res->ctrlpktrule);
1131 	if (err)
1132 		return err;
1133 
1134 	return 0;
1135 }
1136 
mcs_register_interrupts(struct mcs * mcs)1137 static int mcs_register_interrupts(struct mcs *mcs)
1138 {
1139 	int ret = 0;
1140 
1141 	mcs->num_vec = pci_msix_vec_count(mcs->pdev);
1142 
1143 	ret = pci_alloc_irq_vectors(mcs->pdev, mcs->num_vec,
1144 				    mcs->num_vec, PCI_IRQ_MSIX);
1145 	if (ret < 0) {
1146 		dev_err(mcs->dev, "MCS Request for %d msix vector failed err:%d\n",
1147 			mcs->num_vec, ret);
1148 		return ret;
1149 	}
1150 
1151 	ret = request_irq(pci_irq_vector(mcs->pdev, mcs->hw->ip_vec),
1152 			  mcs_ip_intr_handler, 0, "MCS_IP", mcs);
1153 	if (ret) {
1154 		dev_err(mcs->dev, "MCS IP irq registration failed\n");
1155 		goto exit;
1156 	}
1157 
1158 	/* MCS enable IP interrupts */
1159 	mcs_reg_write(mcs, MCSX_IP_INT_ENA_W1S, BIT_ULL(0));
1160 
1161 	/* Enable CPM Rx/Tx interrupts */
1162 	mcs_reg_write(mcs, MCSX_TOP_SLAVE_INT_SUM_ENB,
1163 		      MCS_CPM_RX_INT_ENA | MCS_CPM_TX_INT_ENA |
1164 		      MCS_BBE_RX_INT_ENA | MCS_BBE_TX_INT_ENA |
1165 		      MCS_PAB_RX_INT_ENA | MCS_PAB_TX_INT_ENA);
1166 
1167 	mcs_reg_write(mcs, MCSX_CPM_TX_SLAVE_TX_INT_ENB, 0x7ULL);
1168 	mcs_reg_write(mcs, MCSX_CPM_RX_SLAVE_RX_INT_ENB, 0x7FULL);
1169 
1170 	mcs_reg_write(mcs, MCSX_BBE_RX_SLAVE_BBE_INT_ENB, 0xFFULL);
1171 	mcs_reg_write(mcs, MCSX_BBE_TX_SLAVE_BBE_INT_ENB, 0xFFULL);
1172 
1173 	mcs_reg_write(mcs, MCSX_PAB_RX_SLAVE_PAB_INT_ENB, 0xFFFFFULL);
1174 	mcs_reg_write(mcs, MCSX_PAB_TX_SLAVE_PAB_INT_ENB, 0xFFFFFULL);
1175 
1176 	mcs->tx_sa_active = alloc_mem(mcs, mcs->hw->sc_entries);
1177 	if (!mcs->tx_sa_active) {
1178 		ret = -ENOMEM;
1179 		goto free_irq;
1180 	}
1181 
1182 	return ret;
1183 
1184 free_irq:
1185 	free_irq(pci_irq_vector(mcs->pdev, mcs->hw->ip_vec), mcs);
1186 exit:
1187 	pci_free_irq_vectors(mcs->pdev);
1188 	mcs->num_vec = 0;
1189 	return ret;
1190 }
1191 
mcs_get_blkcnt(void)1192 int mcs_get_blkcnt(void)
1193 {
1194 	struct mcs *mcs;
1195 	int idmax = -ENODEV;
1196 
1197 	/* Check MCS block is present in hardware */
1198 	if (!pci_dev_present(mcs_id_table))
1199 		return 0;
1200 
1201 	list_for_each_entry(mcs, &mcs_list, mcs_list)
1202 		if (mcs->mcs_id > idmax)
1203 			idmax = mcs->mcs_id;
1204 
1205 	if (idmax < 0)
1206 		return 0;
1207 
1208 	return idmax + 1;
1209 }
1210 
mcs_get_pdata(int mcs_id)1211 struct mcs *mcs_get_pdata(int mcs_id)
1212 {
1213 	struct mcs *mcs_dev;
1214 
1215 	list_for_each_entry(mcs_dev, &mcs_list, mcs_list) {
1216 		if (mcs_dev->mcs_id == mcs_id)
1217 			return mcs_dev;
1218 	}
1219 	return NULL;
1220 }
1221 
is_mcs_bypass(int mcs_id)1222 bool is_mcs_bypass(int mcs_id)
1223 {
1224 	struct mcs *mcs_dev;
1225 
1226 	list_for_each_entry(mcs_dev, &mcs_list, mcs_list) {
1227 		if (mcs_dev->mcs_id == mcs_id)
1228 			return mcs_dev->bypass;
1229 	}
1230 	return true;
1231 }
1232 
mcs_set_port_cfg(struct mcs * mcs,struct mcs_port_cfg_set_req * req)1233 void mcs_set_port_cfg(struct mcs *mcs, struct mcs_port_cfg_set_req *req)
1234 {
1235 	u64 val = 0;
1236 
1237 	mcs_reg_write(mcs, MCSX_PAB_RX_SLAVE_PORT_CFGX(req->port_id),
1238 		      req->port_mode & MCS_PORT_MODE_MASK);
1239 
1240 	req->cstm_tag_rel_mode_sel &= 0x3;
1241 
1242 	if (mcs->hw->mcs_blks > 1) {
1243 		req->fifo_skid &= MCS_PORT_FIFO_SKID_MASK;
1244 		val = (u32)req->fifo_skid << 0x10;
1245 		val |= req->fifo_skid;
1246 		mcs_reg_write(mcs, MCSX_PAB_RX_SLAVE_FIFO_SKID_CFGX(req->port_id), val);
1247 		mcs_reg_write(mcs, MCSX_PEX_TX_SLAVE_CUSTOM_TAG_REL_MODE_SEL(req->port_id),
1248 			      req->cstm_tag_rel_mode_sel);
1249 		val = mcs_reg_read(mcs, MCSX_PEX_RX_SLAVE_PEX_CONFIGURATION);
1250 
1251 		if (req->custom_hdr_enb)
1252 			val |= BIT_ULL(req->port_id);
1253 		else
1254 			val &= ~BIT_ULL(req->port_id);
1255 
1256 		mcs_reg_write(mcs, MCSX_PEX_RX_SLAVE_PEX_CONFIGURATION, val);
1257 	} else {
1258 		val = mcs_reg_read(mcs, MCSX_PEX_TX_SLAVE_PORT_CONFIG(req->port_id));
1259 		val |= (req->cstm_tag_rel_mode_sel << 2);
1260 		mcs_reg_write(mcs, MCSX_PEX_TX_SLAVE_PORT_CONFIG(req->port_id), val);
1261 	}
1262 }
1263 
mcs_get_port_cfg(struct mcs * mcs,struct mcs_port_cfg_get_req * req,struct mcs_port_cfg_get_rsp * rsp)1264 void mcs_get_port_cfg(struct mcs *mcs, struct mcs_port_cfg_get_req *req,
1265 		      struct mcs_port_cfg_get_rsp *rsp)
1266 {
1267 	u64 reg = 0;
1268 
1269 	rsp->port_mode = mcs_reg_read(mcs, MCSX_PAB_RX_SLAVE_PORT_CFGX(req->port_id)) &
1270 			 MCS_PORT_MODE_MASK;
1271 
1272 	if (mcs->hw->mcs_blks > 1) {
1273 		reg = MCSX_PAB_RX_SLAVE_FIFO_SKID_CFGX(req->port_id);
1274 		rsp->fifo_skid = mcs_reg_read(mcs, reg) & MCS_PORT_FIFO_SKID_MASK;
1275 		reg = MCSX_PEX_TX_SLAVE_CUSTOM_TAG_REL_MODE_SEL(req->port_id);
1276 		rsp->cstm_tag_rel_mode_sel = mcs_reg_read(mcs, reg) & 0x3;
1277 		if (mcs_reg_read(mcs, MCSX_PEX_RX_SLAVE_PEX_CONFIGURATION) & BIT_ULL(req->port_id))
1278 			rsp->custom_hdr_enb = 1;
1279 	} else {
1280 		reg = MCSX_PEX_TX_SLAVE_PORT_CONFIG(req->port_id);
1281 		rsp->cstm_tag_rel_mode_sel = mcs_reg_read(mcs, reg) >> 2;
1282 	}
1283 
1284 	rsp->port_id = req->port_id;
1285 	rsp->mcs_id = req->mcs_id;
1286 }
1287 
mcs_get_custom_tag_cfg(struct mcs * mcs,struct mcs_custom_tag_cfg_get_req * req,struct mcs_custom_tag_cfg_get_rsp * rsp)1288 void mcs_get_custom_tag_cfg(struct mcs *mcs, struct mcs_custom_tag_cfg_get_req *req,
1289 			    struct mcs_custom_tag_cfg_get_rsp *rsp)
1290 {
1291 	u64 reg = 0, val = 0;
1292 	u8 idx;
1293 
1294 	for (idx = 0; idx < MCS_MAX_CUSTOM_TAGS; idx++) {
1295 		if (mcs->hw->mcs_blks > 1)
1296 			reg  = (req->dir == MCS_RX) ? MCSX_PEX_RX_SLAVE_CUSTOM_TAGX(idx) :
1297 				MCSX_PEX_TX_SLAVE_CUSTOM_TAGX(idx);
1298 		else
1299 			reg = (req->dir == MCS_RX) ? MCSX_PEX_RX_SLAVE_VLAN_CFGX(idx) :
1300 				MCSX_PEX_TX_SLAVE_VLAN_CFGX(idx);
1301 
1302 		val = mcs_reg_read(mcs, reg);
1303 		if (mcs->hw->mcs_blks > 1) {
1304 			rsp->cstm_etype[idx] = val & GENMASK(15, 0);
1305 			rsp->cstm_indx[idx] = (val >> 0x16) & 0x3;
1306 			reg = (req->dir == MCS_RX) ? MCSX_PEX_RX_SLAVE_ETYPE_ENABLE :
1307 				MCSX_PEX_TX_SLAVE_ETYPE_ENABLE;
1308 			rsp->cstm_etype_en = mcs_reg_read(mcs, reg) & 0xFF;
1309 		} else {
1310 			rsp->cstm_etype[idx] = (val >> 0x1) & GENMASK(15, 0);
1311 			rsp->cstm_indx[idx] = (val >> 0x11) & 0x3;
1312 			rsp->cstm_etype_en |= (val & 0x1) << idx;
1313 		}
1314 	}
1315 
1316 	rsp->mcs_id = req->mcs_id;
1317 	rsp->dir = req->dir;
1318 }
1319 
mcs_reset_port(struct mcs * mcs,u8 port_id,u8 reset)1320 void mcs_reset_port(struct mcs *mcs, u8 port_id, u8 reset)
1321 {
1322 	u64 reg = MCSX_MCS_TOP_SLAVE_PORT_RESET(port_id);
1323 
1324 	mcs_reg_write(mcs, reg, reset & 0x1);
1325 }
1326 
1327 /* Set lmac to bypass/operational mode */
mcs_set_lmac_mode(struct mcs * mcs,int lmac_id,u8 mode)1328 void mcs_set_lmac_mode(struct mcs *mcs, int lmac_id, u8 mode)
1329 {
1330 	u64 reg;
1331 	int id = lmac_id * 2;
1332 
1333 	reg = MCSX_MCS_TOP_SLAVE_CHANNEL_CFG(id);
1334 	mcs_reg_write(mcs, reg, (u64)mode);
1335 	reg = MCSX_MCS_TOP_SLAVE_CHANNEL_CFG((id + 1));
1336 	mcs_reg_write(mcs, reg, (u64)mode);
1337 }
1338 
mcs_pn_threshold_set(struct mcs * mcs,struct mcs_set_pn_threshold * pn)1339 void mcs_pn_threshold_set(struct mcs *mcs, struct mcs_set_pn_threshold *pn)
1340 {
1341 	u64 reg;
1342 
1343 	if (pn->dir == MCS_RX)
1344 		reg = pn->xpn ? MCSX_CPM_RX_SLAVE_XPN_THRESHOLD : MCSX_CPM_RX_SLAVE_PN_THRESHOLD;
1345 	else
1346 		reg = pn->xpn ? MCSX_CPM_TX_SLAVE_XPN_THRESHOLD : MCSX_CPM_TX_SLAVE_PN_THRESHOLD;
1347 
1348 	mcs_reg_write(mcs, reg, pn->threshold);
1349 }
1350 
cn10kb_mcs_parser_cfg(struct mcs * mcs)1351 void cn10kb_mcs_parser_cfg(struct mcs *mcs)
1352 {
1353 	u64 reg, val;
1354 
1355 	/* VLAN CTag */
1356 	val = BIT_ULL(0) | (0x8100ull & 0xFFFF) << 1 | BIT_ULL(17);
1357 	/* RX */
1358 	reg = MCSX_PEX_RX_SLAVE_VLAN_CFGX(0);
1359 	mcs_reg_write(mcs, reg, val);
1360 
1361 	/* TX */
1362 	reg = MCSX_PEX_TX_SLAVE_VLAN_CFGX(0);
1363 	mcs_reg_write(mcs, reg, val);
1364 
1365 	/* VLAN STag */
1366 	val = BIT_ULL(0) | (0x88a8ull & 0xFFFF) << 1 | BIT_ULL(18);
1367 	/* RX */
1368 	reg = MCSX_PEX_RX_SLAVE_VLAN_CFGX(1);
1369 	mcs_reg_write(mcs, reg, val);
1370 
1371 	/* TX */
1372 	reg = MCSX_PEX_TX_SLAVE_VLAN_CFGX(1);
1373 	mcs_reg_write(mcs, reg, val);
1374 }
1375 
mcs_lmac_init(struct mcs * mcs,int lmac_id)1376 static void mcs_lmac_init(struct mcs *mcs, int lmac_id)
1377 {
1378 	u64 reg;
1379 
1380 	/* Port mode 25GB */
1381 	reg = MCSX_PAB_RX_SLAVE_PORT_CFGX(lmac_id);
1382 	mcs_reg_write(mcs, reg, 0);
1383 
1384 	if (mcs->hw->mcs_blks > 1) {
1385 		reg = MCSX_PAB_RX_SLAVE_FIFO_SKID_CFGX(lmac_id);
1386 		mcs_reg_write(mcs, reg, 0xe000e);
1387 		return;
1388 	}
1389 
1390 	reg = MCSX_PAB_TX_SLAVE_PORT_CFGX(lmac_id);
1391 	mcs_reg_write(mcs, reg, 0);
1392 }
1393 
mcs_set_lmac_channels(int mcs_id,u16 base)1394 int mcs_set_lmac_channels(int mcs_id, u16 base)
1395 {
1396 	struct mcs *mcs;
1397 	int lmac;
1398 	u64 cfg;
1399 
1400 	mcs = mcs_get_pdata(mcs_id);
1401 	if (!mcs)
1402 		return -ENODEV;
1403 	for (lmac = 0; lmac < mcs->hw->lmac_cnt; lmac++) {
1404 		cfg = mcs_reg_read(mcs, MCSX_LINK_LMACX_CFG(lmac));
1405 		cfg &= ~(MCSX_LINK_LMAC_BASE_MASK | MCSX_LINK_LMAC_RANGE_MASK);
1406 		cfg |=	FIELD_PREP(MCSX_LINK_LMAC_RANGE_MASK, ilog2(16));
1407 		cfg |=	FIELD_PREP(MCSX_LINK_LMAC_BASE_MASK, base);
1408 		mcs_reg_write(mcs, MCSX_LINK_LMACX_CFG(lmac), cfg);
1409 		base += 16;
1410 	}
1411 	return 0;
1412 }
1413 
mcs_x2p_calibration(struct mcs * mcs)1414 static int mcs_x2p_calibration(struct mcs *mcs)
1415 {
1416 	unsigned long timeout = jiffies + usecs_to_jiffies(20000);
1417 	int i, err = 0;
1418 	u64 val;
1419 
1420 	/* set X2P calibration */
1421 	val = mcs_reg_read(mcs, MCSX_MIL_GLOBAL);
1422 	val |= BIT_ULL(5);
1423 	mcs_reg_write(mcs, MCSX_MIL_GLOBAL, val);
1424 
1425 	/* Wait for calibration to complete */
1426 	while (!(mcs_reg_read(mcs, MCSX_MIL_RX_GBL_STATUS) & BIT_ULL(0))) {
1427 		if (time_before(jiffies, timeout)) {
1428 			usleep_range(80, 100);
1429 			continue;
1430 		} else {
1431 			err = -EBUSY;
1432 			dev_err(mcs->dev, "MCS X2P calibration failed..ignoring\n");
1433 			return err;
1434 		}
1435 	}
1436 
1437 	val = mcs_reg_read(mcs, MCSX_MIL_RX_GBL_STATUS);
1438 	for (i = 0; i < mcs->hw->mcs_x2p_intf; i++) {
1439 		if (val & BIT_ULL(1 + i))
1440 			continue;
1441 		err = -EBUSY;
1442 		dev_err(mcs->dev, "MCS:%d didn't respond to X2P calibration\n", i);
1443 	}
1444 	/* Clear X2P calibrate */
1445 	mcs_reg_write(mcs, MCSX_MIL_GLOBAL, mcs_reg_read(mcs, MCSX_MIL_GLOBAL) & ~BIT_ULL(5));
1446 
1447 	return err;
1448 }
1449 
mcs_set_external_bypass(struct mcs * mcs,bool bypass)1450 static void mcs_set_external_bypass(struct mcs *mcs, bool bypass)
1451 {
1452 	u64 val;
1453 
1454 	/* Set MCS to external bypass */
1455 	val = mcs_reg_read(mcs, MCSX_MIL_GLOBAL);
1456 	if (bypass)
1457 		val |= BIT_ULL(6);
1458 	else
1459 		val &= ~BIT_ULL(6);
1460 	mcs_reg_write(mcs, MCSX_MIL_GLOBAL, val);
1461 	mcs->bypass = bypass;
1462 }
1463 
mcs_global_cfg(struct mcs * mcs)1464 static void mcs_global_cfg(struct mcs *mcs)
1465 {
1466 	/* Disable external bypass */
1467 	mcs_set_external_bypass(mcs, false);
1468 
1469 	/* Reset TX/RX stats memory */
1470 	mcs_reg_write(mcs, MCSX_CSE_RX_SLAVE_STATS_CLEAR, 0x1F);
1471 	mcs_reg_write(mcs, MCSX_CSE_TX_SLAVE_STATS_CLEAR, 0x1F);
1472 
1473 	/* Set MCS to perform standard IEEE802.1AE macsec processing */
1474 	if (mcs->hw->mcs_blks == 1) {
1475 		mcs_reg_write(mcs, MCSX_IP_MODE, BIT_ULL(3));
1476 		return;
1477 	}
1478 
1479 	mcs_reg_write(mcs, MCSX_BBE_RX_SLAVE_CAL_ENTRY, 0xe4);
1480 	mcs_reg_write(mcs, MCSX_BBE_RX_SLAVE_CAL_LEN, 4);
1481 }
1482 
cn10kb_mcs_set_hw_capabilities(struct mcs * mcs)1483 void cn10kb_mcs_set_hw_capabilities(struct mcs *mcs)
1484 {
1485 	struct hwinfo *hw = mcs->hw;
1486 
1487 	hw->tcam_entries = 128;		/* TCAM entries */
1488 	hw->secy_entries  = 128;	/* SecY entries */
1489 	hw->sc_entries = 128;		/* SC CAM entries */
1490 	hw->sa_entries = 256;		/* SA entries */
1491 	hw->lmac_cnt = 20;		/* lmacs/ports per mcs block */
1492 	hw->mcs_x2p_intf = 5;		/* x2p clabration intf */
1493 	hw->mcs_blks = 1;		/* MCS blocks */
1494 	hw->ip_vec = MCS_CN10KB_INT_VEC_IP; /* IP vector */
1495 }
1496 
1497 static struct mcs_ops cn10kb_mcs_ops = {
1498 	.mcs_set_hw_capabilities	= cn10kb_mcs_set_hw_capabilities,
1499 	.mcs_parser_cfg			= cn10kb_mcs_parser_cfg,
1500 	.mcs_tx_sa_mem_map_write	= cn10kb_mcs_tx_sa_mem_map_write,
1501 	.mcs_rx_sa_mem_map_write	= cn10kb_mcs_rx_sa_mem_map_write,
1502 	.mcs_flowid_secy_map		= cn10kb_mcs_flowid_secy_map,
1503 	.mcs_bbe_intr_handler		= cn10kb_mcs_bbe_intr_handler,
1504 	.mcs_pab_intr_handler		= cn10kb_mcs_pab_intr_handler,
1505 };
1506 
mcs_probe(struct pci_dev * pdev,const struct pci_device_id * id)1507 static int mcs_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1508 {
1509 	struct device *dev = &pdev->dev;
1510 	int lmac, err = 0;
1511 	struct mcs *mcs;
1512 
1513 	mcs = devm_kzalloc(dev, sizeof(*mcs), GFP_KERNEL);
1514 	if (!mcs)
1515 		return -ENOMEM;
1516 
1517 	mcs->hw = devm_kzalloc(dev, sizeof(struct hwinfo), GFP_KERNEL);
1518 	if (!mcs->hw)
1519 		return -ENOMEM;
1520 
1521 	err = pci_enable_device(pdev);
1522 	if (err) {
1523 		dev_err(dev, "Failed to enable PCI device\n");
1524 		pci_set_drvdata(pdev, NULL);
1525 		return err;
1526 	}
1527 
1528 	err = pci_request_regions(pdev, DRV_NAME);
1529 	if (err) {
1530 		dev_err(dev, "PCI request regions failed 0x%x\n", err);
1531 		goto exit;
1532 	}
1533 
1534 	mcs->reg_base = pcim_iomap(pdev, PCI_CFG_REG_BAR_NUM, 0);
1535 	if (!mcs->reg_base) {
1536 		dev_err(dev, "mcs: Cannot map CSR memory space, aborting\n");
1537 		err = -ENOMEM;
1538 		goto exit;
1539 	}
1540 
1541 	pci_set_drvdata(pdev, mcs);
1542 	mcs->pdev = pdev;
1543 	mcs->dev = &pdev->dev;
1544 
1545 	if (pdev->subsystem_device == PCI_SUBSYS_DEVID_CN10K_B)
1546 		mcs->mcs_ops = &cn10kb_mcs_ops;
1547 	else
1548 		mcs->mcs_ops = cnf10kb_get_mac_ops();
1549 
1550 	/* Set hardware capabilities */
1551 	mcs->mcs_ops->mcs_set_hw_capabilities(mcs);
1552 
1553 	mcs_global_cfg(mcs);
1554 
1555 	/* Perform X2P clibration */
1556 	err = mcs_x2p_calibration(mcs);
1557 	if (err)
1558 		goto err_x2p;
1559 
1560 	mcs->mcs_id = (pci_resource_start(pdev, PCI_CFG_REG_BAR_NUM) >> 24)
1561 			& MCS_ID_MASK;
1562 
1563 	/* Set mcs tx side resources */
1564 	err = mcs_alloc_struct_mem(mcs, &mcs->tx);
1565 	if (err)
1566 		goto err_x2p;
1567 
1568 	/* Set mcs rx side resources */
1569 	err = mcs_alloc_struct_mem(mcs, &mcs->rx);
1570 	if (err)
1571 		goto err_x2p;
1572 
1573 	/* per port config */
1574 	for (lmac = 0; lmac < mcs->hw->lmac_cnt; lmac++)
1575 		mcs_lmac_init(mcs, lmac);
1576 
1577 	/* Parser configuration */
1578 	mcs->mcs_ops->mcs_parser_cfg(mcs);
1579 
1580 	err = mcs_register_interrupts(mcs);
1581 	if (err)
1582 		goto exit;
1583 
1584 	list_add(&mcs->mcs_list, &mcs_list);
1585 	mutex_init(&mcs->stats_lock);
1586 
1587 	return 0;
1588 
1589 err_x2p:
1590 	/* Enable external bypass */
1591 	mcs_set_external_bypass(mcs, true);
1592 exit:
1593 	pci_release_regions(pdev);
1594 	pci_disable_device(pdev);
1595 	pci_set_drvdata(pdev, NULL);
1596 	return err;
1597 }
1598 
mcs_remove(struct pci_dev * pdev)1599 static void mcs_remove(struct pci_dev *pdev)
1600 {
1601 	struct mcs *mcs = pci_get_drvdata(pdev);
1602 
1603 	/* Set MCS to external bypass */
1604 	mcs_set_external_bypass(mcs, true);
1605 	free_irq(pci_irq_vector(pdev, mcs->hw->ip_vec), mcs);
1606 	pci_free_irq_vectors(pdev);
1607 	pci_release_regions(pdev);
1608 	pci_disable_device(pdev);
1609 	pci_set_drvdata(pdev, NULL);
1610 }
1611 
1612 struct pci_driver mcs_driver = {
1613 	.name = DRV_NAME,
1614 	.id_table = mcs_id_table,
1615 	.probe = mcs_probe,
1616 	.remove = mcs_remove,
1617 };
1618