1 // SPDX-License-Identifier: GPL-2.0
2 /* Marvell RVU Admin Function driver
3 *
4 * Copyright (C) 2018 Marvell.
5 *
6 */
7
8 #include <linux/bitfield.h>
9 #include <linux/module.h>
10 #include <linux/pci.h>
11
12 #include "rvu_struct.h"
13 #include "rvu_reg.h"
14 #include "rvu.h"
15 #include "npc.h"
16 #include "cgx.h"
17 #include "npc_profile.h"
18 #include "rvu_npc_hash.h"
19 #include "cn20k/npc.h"
20 #include "rvu_npc.h"
21 #include "cn20k/reg.h"
22 #include "lmac_common.h"
23
24 #define RSVD_MCAM_ENTRIES_PER_PF 3 /* Broadcast, Promisc and AllMulticast */
25 #define RSVD_MCAM_ENTRIES_PER_NIXLF 1 /* Ucast for LFs */
26
27 #define NPC_PARSE_RESULT_DMAC_OFFSET 8
28 #define NPC_HW_TSTAMP_OFFSET 8ULL
29 #define NPC_KEX_CHAN_MASK 0xFFFULL
30 #define NPC_KEX_PF_FUNC_MASK 0xFFFFULL
31
32 #define ALIGN_8B_CEIL(__a) (((__a) + 7) & (-8))
33
34 static const char def_pfl_name[] = "default";
35
36 static void npc_mcam_free_all_entries(struct rvu *rvu, struct npc_mcam *mcam,
37 int blkaddr, u16 pcifunc);
38 static void npc_mcam_free_all_counters(struct rvu *rvu, struct npc_mcam *mcam,
39 u16 pcifunc);
40
is_npc_intf_tx(u8 intf)41 bool is_npc_intf_tx(u8 intf)
42 {
43 return !!(intf & 0x1);
44 }
45
is_npc_intf_rx(u8 intf)46 bool is_npc_intf_rx(u8 intf)
47 {
48 return !(intf & 0x1);
49 }
50
is_npc_interface_valid(struct rvu * rvu,u8 intf)51 bool is_npc_interface_valid(struct rvu *rvu, u8 intf)
52 {
53 struct rvu_hwinfo *hw = rvu->hw;
54
55 return intf < hw->npc_intfs;
56 }
57
rvu_npc_get_tx_nibble_cfg(struct rvu * rvu,u64 nibble_ena)58 int rvu_npc_get_tx_nibble_cfg(struct rvu *rvu, u64 nibble_ena)
59 {
60 /* Due to a HW issue in these silicon versions, parse nibble enable
61 * configuration has to be identical for both Rx and Tx interfaces.
62 */
63 if (is_rvu_96xx_B0(rvu))
64 return nibble_ena;
65 return 0;
66 }
67
rvu_npc_set_pkind(struct rvu * rvu,int pkind,struct rvu_pfvf * pfvf)68 void rvu_npc_set_pkind(struct rvu *rvu, int pkind, struct rvu_pfvf *pfvf)
69 {
70 int blkaddr;
71 u64 val = 0;
72
73 blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
74 if (blkaddr < 0)
75 return;
76
77 /* Config CPI base for the PKIND */
78 val = pkind | 1ULL << 62;
79 rvu_write64(rvu, blkaddr, NPC_AF_PKINDX_CPI_DEFX(pkind, 0), val);
80 }
81
rvu_npc_get_pkind(struct rvu * rvu,u16 pf)82 int rvu_npc_get_pkind(struct rvu *rvu, u16 pf)
83 {
84 struct npc_pkind *pkind = &rvu->hw->pkind;
85 u32 map;
86 int i;
87
88 for (i = 0; i < pkind->rsrc.max; i++) {
89 map = pkind->pfchan_map[i];
90 if (((map >> 16) & 0x3F) == pf)
91 return i;
92 }
93 return -1;
94 }
95
96 #define NPC_AF_ACTION0_PTR_ADVANCE GENMASK_ULL(27, 20)
97
npc_config_ts_kpuaction(struct rvu * rvu,int pf,u16 pcifunc,bool enable)98 int npc_config_ts_kpuaction(struct rvu *rvu, int pf, u16 pcifunc, bool enable)
99 {
100 int pkind, blkaddr;
101 u64 val;
102
103 pkind = rvu_npc_get_pkind(rvu, pf);
104 if (pkind < 0) {
105 dev_err(rvu->dev, "%s: pkind not mapped\n", __func__);
106 return -EINVAL;
107 }
108
109 blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, pcifunc);
110 if (blkaddr < 0) {
111 dev_err(rvu->dev, "%s: NPC block not implemented\n", __func__);
112 return -EINVAL;
113 }
114
115 val = rvu_read64(rvu, blkaddr, NPC_AF_PKINDX_ACTION0(pkind));
116 val &= ~NPC_AF_ACTION0_PTR_ADVANCE;
117 /* If timestamp is enabled then configure NPC to shift 8 bytes */
118 if (enable)
119 val |= FIELD_PREP(NPC_AF_ACTION0_PTR_ADVANCE,
120 NPC_HW_TSTAMP_OFFSET);
121 rvu_write64(rvu, blkaddr, NPC_AF_PKINDX_ACTION0(pkind), val);
122
123 return 0;
124 }
125
npc_get_ucast_mcam_index(struct npc_mcam * mcam,u16 pcifunc,int nixlf)126 static int npc_get_ucast_mcam_index(struct npc_mcam *mcam, u16 pcifunc,
127 int nixlf)
128 {
129 struct rvu_hwinfo *hw = container_of(mcam, struct rvu_hwinfo, mcam);
130 struct rvu *rvu = hw->rvu;
131 int blkaddr = 0, max = 0;
132 struct rvu_block *block;
133 struct rvu_pfvf *pfvf;
134
135 pfvf = rvu_get_pfvf(rvu, pcifunc);
136 /* Given a PF/VF and NIX LF number calculate the unicast mcam
137 * entry index based on the NIX block assigned to the PF/VF.
138 */
139 blkaddr = rvu_get_next_nix_blkaddr(rvu, blkaddr);
140 while (blkaddr) {
141 if (pfvf->nix_blkaddr == blkaddr)
142 break;
143 block = &rvu->hw->block[blkaddr];
144 max += block->lf.max;
145 blkaddr = rvu_get_next_nix_blkaddr(rvu, blkaddr);
146 }
147
148 return mcam->nixlf_offset + (max + nixlf) * RSVD_MCAM_ENTRIES_PER_NIXLF;
149 }
150
npc_get_nixlf_mcam_index(struct npc_mcam * mcam,u16 pcifunc,int nixlf,int type)151 int npc_get_nixlf_mcam_index(struct npc_mcam *mcam,
152 u16 pcifunc, int nixlf, int type)
153 {
154 struct rvu_hwinfo *hw = container_of(mcam, struct rvu_hwinfo, mcam);
155 struct rvu *rvu = hw->rvu;
156 u16 bcast, mcast, promisc, ucast;
157 int index;
158 int rc;
159 int pf;
160
161 if (is_cn20k(rvu->pdev)) {
162 rc = npc_cn20k_dft_rules_idx_get(rvu, pcifunc, &bcast, &mcast,
163 &promisc, &ucast);
164 if (rc)
165 return -EFAULT;
166
167 if (is_lbk_vf(rvu, pcifunc)) {
168 if (promisc == USHRT_MAX)
169 return -EINVAL;
170 return promisc;
171 }
172
173 if (is_cgx_vf(rvu, pcifunc)) {
174 if (ucast == USHRT_MAX)
175 return -EINVAL;
176
177 return ucast;
178 }
179
180 switch (type) {
181 case NIXLF_BCAST_ENTRY:
182 if (bcast == USHRT_MAX)
183 return -EINVAL;
184 return bcast;
185 case NIXLF_ALLMULTI_ENTRY:
186 if (mcast == USHRT_MAX)
187 return -EINVAL;
188 return mcast;
189 case NIXLF_PROMISC_ENTRY:
190 if (promisc == USHRT_MAX)
191 return -EINVAL;
192 return promisc;
193 case NIXLF_UCAST_ENTRY:
194 if (ucast == USHRT_MAX)
195 return -EINVAL;
196 return ucast;
197 default:
198 return -EINVAL;
199 }
200 }
201
202 /* Check if this is for a PF */
203 pf = rvu_get_pf(rvu->pdev, pcifunc);
204 if (pf && !(pcifunc & RVU_PFVF_FUNC_MASK)) {
205 /* Reserved entries exclude PF0 */
206 pf--;
207 index = mcam->pf_offset + (pf * RSVD_MCAM_ENTRIES_PER_PF);
208 /* Broadcast address matching entry should be first so
209 * that the packet can be replicated to all VFs.
210 */
211 if (type == NIXLF_BCAST_ENTRY)
212 return index;
213 else if (type == NIXLF_ALLMULTI_ENTRY)
214 return index + 1;
215 else if (type == NIXLF_PROMISC_ENTRY)
216 return index + 2;
217 }
218
219 return npc_get_ucast_mcam_index(mcam, pcifunc, nixlf);
220 }
221
npc_get_bank(struct npc_mcam * mcam,int index)222 int npc_get_bank(struct npc_mcam *mcam, int index)
223 {
224 struct rvu_hwinfo *hw = container_of(mcam, struct rvu_hwinfo, mcam);
225 int bank = index / mcam->banksize;
226 struct rvu *rvu = hw->rvu;
227
228 if (is_cn20k(rvu->pdev))
229 return bank;
230
231 /* 0,1 & 2,3 banks are combined for this keysize */
232 if (mcam->keysize == NPC_MCAM_KEY_X2)
233 return bank ? 2 : 0;
234
235 return bank;
236 }
237
is_mcam_entry_enabled(struct rvu * rvu,struct npc_mcam * mcam,int blkaddr,int index)238 bool is_mcam_entry_enabled(struct rvu *rvu, struct npc_mcam *mcam,
239 int blkaddr, int index)
240 {
241 int bank = npc_get_bank(mcam, index);
242 u64 cfg;
243
244 index &= (mcam->banksize - 1);
245 if (is_cn20k(rvu->pdev))
246 cfg = rvu_read64(rvu, blkaddr,
247 NPC_AF_CN20K_MCAMEX_BANKX_CFG_EXT(index,
248 bank));
249 else
250 cfg = rvu_read64(rvu, blkaddr,
251 NPC_AF_MCAMEX_BANKX_CFG(index, bank));
252
253 return (cfg & 1);
254 }
255
npc_enable_mcam_entry(struct rvu * rvu,struct npc_mcam * mcam,int blkaddr,int index,bool enable)256 void npc_enable_mcam_entry(struct rvu *rvu, struct npc_mcam *mcam,
257 int blkaddr, int index, bool enable)
258 {
259 int bank = npc_get_bank(mcam, index);
260 int actbank = bank;
261
262 if (is_cn20k(rvu->pdev)) {
263 if (npc_cn20k_enable_mcam_entry(rvu, blkaddr, index, enable))
264 dev_err(rvu->dev, "Error to %s mcam %u entry\n",
265 enable ? "enable" : "disable", index);
266 return;
267 }
268
269 index &= (mcam->banksize - 1);
270 for (; bank < (actbank + mcam->banks_per_entry); bank++) {
271 rvu_write64(rvu, blkaddr,
272 NPC_AF_MCAMEX_BANKX_CFG(index, bank),
273 enable ? 1 : 0);
274 }
275 }
276
npc_clear_mcam_entry(struct rvu * rvu,struct npc_mcam * mcam,int blkaddr,int index)277 static void npc_clear_mcam_entry(struct rvu *rvu, struct npc_mcam *mcam,
278 int blkaddr, int index)
279 {
280 int bank = npc_get_bank(mcam, index);
281 int actbank = bank;
282
283 if (is_cn20k(rvu->pdev)) {
284 if (npc_cn20k_clear_mcam_entry(rvu, blkaddr, index))
285 dev_err(rvu->dev, "%s Failed to clear mcam %u\n",
286 __func__, index);
287 return;
288 }
289
290 index &= (mcam->banksize - 1);
291 for (; bank < (actbank + mcam->banks_per_entry); bank++) {
292 rvu_write64(rvu, blkaddr,
293 NPC_AF_MCAMEX_BANKX_CAMX_INTF(index, bank, 1), 0);
294 rvu_write64(rvu, blkaddr,
295 NPC_AF_MCAMEX_BANKX_CAMX_INTF(index, bank, 0), 0);
296
297 rvu_write64(rvu, blkaddr,
298 NPC_AF_MCAMEX_BANKX_CAMX_W0(index, bank, 1), 0);
299 rvu_write64(rvu, blkaddr,
300 NPC_AF_MCAMEX_BANKX_CAMX_W0(index, bank, 0), 0);
301
302 rvu_write64(rvu, blkaddr,
303 NPC_AF_MCAMEX_BANKX_CAMX_W1(index, bank, 1), 0);
304 rvu_write64(rvu, blkaddr,
305 NPC_AF_MCAMEX_BANKX_CAMX_W1(index, bank, 0), 0);
306 }
307 }
308
npc_get_keyword(struct mcam_entry * entry,int idx,u64 * cam0,u64 * cam1)309 static void npc_get_keyword(struct mcam_entry *entry, int idx,
310 u64 *cam0, u64 *cam1)
311 {
312 u64 kw_mask = 0x00;
313
314 #define CAM_MASK(n) (BIT_ULL(n) - 1)
315
316 /* 0, 2, 4, 6 indices refer to BANKX_CAMX_W0 and
317 * 1, 3, 5, 7 indices refer to BANKX_CAMX_W1.
318 *
319 * Also, only 48 bits of BANKX_CAMX_W1 are valid.
320 */
321 switch (idx) {
322 case 0:
323 /* BANK(X)_CAM_W0<63:0> = MCAM_KEY[KW0]<63:0> */
324 *cam1 = entry->kw[0];
325 kw_mask = entry->kw_mask[0];
326 break;
327 case 1:
328 /* BANK(X)_CAM_W1<47:0> = MCAM_KEY[KW1]<47:0> */
329 *cam1 = entry->kw[1] & CAM_MASK(48);
330 kw_mask = entry->kw_mask[1] & CAM_MASK(48);
331 break;
332 case 2:
333 /* BANK(X + 1)_CAM_W0<15:0> = MCAM_KEY[KW1]<63:48>
334 * BANK(X + 1)_CAM_W0<63:16> = MCAM_KEY[KW2]<47:0>
335 */
336 *cam1 = (entry->kw[1] >> 48) & CAM_MASK(16);
337 *cam1 |= ((entry->kw[2] & CAM_MASK(48)) << 16);
338 kw_mask = (entry->kw_mask[1] >> 48) & CAM_MASK(16);
339 kw_mask |= ((entry->kw_mask[2] & CAM_MASK(48)) << 16);
340 break;
341 case 3:
342 /* BANK(X + 1)_CAM_W1<15:0> = MCAM_KEY[KW2]<63:48>
343 * BANK(X + 1)_CAM_W1<47:16> = MCAM_KEY[KW3]<31:0>
344 */
345 *cam1 = (entry->kw[2] >> 48) & CAM_MASK(16);
346 *cam1 |= ((entry->kw[3] & CAM_MASK(32)) << 16);
347 kw_mask = (entry->kw_mask[2] >> 48) & CAM_MASK(16);
348 kw_mask |= ((entry->kw_mask[3] & CAM_MASK(32)) << 16);
349 break;
350 case 4:
351 /* BANK(X + 2)_CAM_W0<31:0> = MCAM_KEY[KW3]<63:32>
352 * BANK(X + 2)_CAM_W0<63:32> = MCAM_KEY[KW4]<31:0>
353 */
354 *cam1 = (entry->kw[3] >> 32) & CAM_MASK(32);
355 *cam1 |= ((entry->kw[4] & CAM_MASK(32)) << 32);
356 kw_mask = (entry->kw_mask[3] >> 32) & CAM_MASK(32);
357 kw_mask |= ((entry->kw_mask[4] & CAM_MASK(32)) << 32);
358 break;
359 case 5:
360 /* BANK(X + 2)_CAM_W1<31:0> = MCAM_KEY[KW4]<63:32>
361 * BANK(X + 2)_CAM_W1<47:32> = MCAM_KEY[KW5]<15:0>
362 */
363 *cam1 = (entry->kw[4] >> 32) & CAM_MASK(32);
364 *cam1 |= ((entry->kw[5] & CAM_MASK(16)) << 32);
365 kw_mask = (entry->kw_mask[4] >> 32) & CAM_MASK(32);
366 kw_mask |= ((entry->kw_mask[5] & CAM_MASK(16)) << 32);
367 break;
368 case 6:
369 /* BANK(X + 3)_CAM_W0<47:0> = MCAM_KEY[KW5]<63:16>
370 * BANK(X + 3)_CAM_W0<63:48> = MCAM_KEY[KW6]<15:0>
371 */
372 *cam1 = (entry->kw[5] >> 16) & CAM_MASK(48);
373 *cam1 |= ((entry->kw[6] & CAM_MASK(16)) << 48);
374 kw_mask = (entry->kw_mask[5] >> 16) & CAM_MASK(48);
375 kw_mask |= ((entry->kw_mask[6] & CAM_MASK(16)) << 48);
376 break;
377 case 7:
378 /* BANK(X + 3)_CAM_W1<47:0> = MCAM_KEY[KW6]<63:16> */
379 *cam1 = (entry->kw[6] >> 16) & CAM_MASK(48);
380 kw_mask = (entry->kw_mask[6] >> 16) & CAM_MASK(48);
381 break;
382 }
383
384 *cam1 &= kw_mask;
385 *cam0 = ~*cam1 & kw_mask;
386 }
387
npc_fill_entryword(struct mcam_entry * entry,int idx,u64 cam0,u64 cam1)388 static void npc_fill_entryword(struct mcam_entry *entry, int idx,
389 u64 cam0, u64 cam1)
390 {
391 /* Similar to npc_get_keyword, but fills mcam_entry structure from
392 * CAM registers.
393 */
394 switch (idx) {
395 case 0:
396 entry->kw[0] = cam1;
397 entry->kw_mask[0] = cam1 ^ cam0;
398 break;
399 case 1:
400 entry->kw[1] = cam1;
401 entry->kw_mask[1] = cam1 ^ cam0;
402 break;
403 case 2:
404 entry->kw[1] |= (cam1 & CAM_MASK(16)) << 48;
405 entry->kw[2] = (cam1 >> 16) & CAM_MASK(48);
406 entry->kw_mask[1] |= ((cam1 ^ cam0) & CAM_MASK(16)) << 48;
407 entry->kw_mask[2] = ((cam1 ^ cam0) >> 16) & CAM_MASK(48);
408 break;
409 case 3:
410 entry->kw[2] |= (cam1 & CAM_MASK(16)) << 48;
411 entry->kw[3] = (cam1 >> 16) & CAM_MASK(32);
412 entry->kw_mask[2] |= ((cam1 ^ cam0) & CAM_MASK(16)) << 48;
413 entry->kw_mask[3] = ((cam1 ^ cam0) >> 16) & CAM_MASK(32);
414 break;
415 case 4:
416 entry->kw[3] |= (cam1 & CAM_MASK(32)) << 32;
417 entry->kw[4] = (cam1 >> 32) & CAM_MASK(32);
418 entry->kw_mask[3] |= ((cam1 ^ cam0) & CAM_MASK(32)) << 32;
419 entry->kw_mask[4] = ((cam1 ^ cam0) >> 32) & CAM_MASK(32);
420 break;
421 case 5:
422 entry->kw[4] |= (cam1 & CAM_MASK(32)) << 32;
423 entry->kw[5] = (cam1 >> 32) & CAM_MASK(16);
424 entry->kw_mask[4] |= ((cam1 ^ cam0) & CAM_MASK(32)) << 32;
425 entry->kw_mask[5] = ((cam1 ^ cam0) >> 32) & CAM_MASK(16);
426 break;
427 case 6:
428 entry->kw[5] |= (cam1 & CAM_MASK(48)) << 16;
429 entry->kw[6] = (cam1 >> 48) & CAM_MASK(16);
430 entry->kw_mask[5] |= ((cam1 ^ cam0) & CAM_MASK(48)) << 16;
431 entry->kw_mask[6] = ((cam1 ^ cam0) >> 48) & CAM_MASK(16);
432 break;
433 case 7:
434 entry->kw[6] |= (cam1 & CAM_MASK(48)) << 16;
435 entry->kw_mask[6] |= ((cam1 ^ cam0) & CAM_MASK(48)) << 16;
436 break;
437 }
438 }
439
npc_get_default_entry_action(struct rvu * rvu,struct npc_mcam * mcam,int blkaddr,u16 pf_func)440 static u64 npc_get_default_entry_action(struct rvu *rvu, struct npc_mcam *mcam,
441 int blkaddr, u16 pf_func)
442 {
443 int bank, nixlf, index;
444 u64 reg;
445
446 /* get ucast entry rule entry index */
447 if (nix_get_nixlf(rvu, pf_func, &nixlf, NULL)) {
448 dev_err(rvu->dev, "%s: nixlf not attached to pcifunc:0x%x\n",
449 __func__, pf_func);
450 /* Action 0 is drop */
451 return 0;
452 }
453
454 index = npc_get_nixlf_mcam_index(mcam, pf_func, nixlf,
455 NIXLF_UCAST_ENTRY);
456
457 if (index < 0) {
458 dev_err(rvu->dev,
459 "%s: failed to get ucast entry pcifunc:0x%x\n",
460 __func__, pf_func);
461 /* Action 0 is drop */
462 return 0;
463 }
464
465 bank = npc_get_bank(mcam, index);
466 index &= (mcam->banksize - 1);
467
468 if (is_cn20k(rvu->pdev))
469 reg = NPC_AF_CN20K_MCAMEX_BANKX_ACTIONX_EXT(index, bank, 0);
470 else
471 reg = NPC_AF_MCAMEX_BANKX_ACTION(index, bank);
472
473 return rvu_read64(rvu, blkaddr, reg);
474 }
475
npc_fixup_vf_rule(struct rvu * rvu,struct npc_mcam * mcam,int blkaddr,int index,struct mcam_entry * entry,bool * enable)476 static void npc_fixup_vf_rule(struct rvu *rvu, struct npc_mcam *mcam,
477 int blkaddr, int index, struct mcam_entry *entry,
478 bool *enable)
479 {
480 struct rvu_npc_mcam_rule *rule;
481 u16 owner, target_func;
482 struct rvu_pfvf *pfvf;
483 u64 rx_action;
484
485 owner = mcam->entry2pfvf_map[index];
486 target_func = (entry->action >> 4) & 0xffff;
487 /* do nothing when target is LBK/PF or owner is not PF */
488 if (is_pffunc_af(owner) || is_lbk_vf(rvu, target_func) ||
489 (owner & RVU_PFVF_FUNC_MASK) ||
490 !(target_func & RVU_PFVF_FUNC_MASK))
491 return;
492
493 /* save entry2target_pffunc */
494 pfvf = rvu_get_pfvf(rvu, target_func);
495 mcam->entry2target_pffunc[index] = target_func;
496
497 /* don't enable rule when nixlf not attached or initialized */
498 if (!(is_nixlf_attached(rvu, target_func) &&
499 test_bit(NIXLF_INITIALIZED, &pfvf->flags)))
500 *enable = false;
501
502 /* fix up not needed for the rules added by user(ntuple filters) */
503 list_for_each_entry(rule, &mcam->mcam_rules, list) {
504 if (rule->entry == index)
505 return;
506 }
507
508 /* AF modifies given action iff PF/VF has requested for it */
509 if ((entry->action & 0xFULL) != NIX_RX_ACTION_DEFAULT)
510 return;
511
512 /* copy VF default entry action to the VF mcam entry */
513 rx_action = npc_get_default_entry_action(rvu, mcam, blkaddr,
514 target_func);
515 if (rx_action)
516 entry->action = rx_action;
517 }
518
npc_config_mcam_entry(struct rvu * rvu,struct npc_mcam * mcam,int blkaddr,int index,u8 intf,struct mcam_entry * entry,bool enable)519 static void npc_config_mcam_entry(struct rvu *rvu, struct npc_mcam *mcam,
520 int blkaddr, int index, u8 intf,
521 struct mcam_entry *entry, bool enable)
522 {
523 int bank = npc_get_bank(mcam, index);
524 int kw = 0, actbank, actindex;
525 u8 tx_intf_mask = ~intf & 0x3;
526 u8 tx_intf = intf;
527 u64 cam0, cam1;
528
529 actbank = bank; /* Save bank id, to set action later on */
530 actindex = index;
531 index &= (mcam->banksize - 1);
532
533 /* Disable before mcam entry update */
534 npc_enable_mcam_entry(rvu, mcam, blkaddr, actindex, false);
535
536 /* Clear mcam entry to avoid writes being suppressed by NPC */
537 npc_clear_mcam_entry(rvu, mcam, blkaddr, actindex);
538
539 /* CAM1 takes the comparison value and
540 * CAM0 specifies match for a bit in key being '0' or '1' or 'dontcare'.
541 * CAM1<n> = 0 & CAM0<n> = 1 => match if key<n> = 0
542 * CAM1<n> = 1 & CAM0<n> = 0 => match if key<n> = 1
543 * CAM1<n> = 0 & CAM0<n> = 0 => always match i.e dontcare.
544 */
545 for (; bank < (actbank + mcam->banks_per_entry); bank++, kw = kw + 2) {
546 /* Interface should be set in all banks */
547 if (is_npc_intf_tx(intf)) {
548 /* Last bit must be set and rest don't care
549 * for TX interfaces
550 */
551 tx_intf_mask = 0x1;
552 tx_intf = intf & tx_intf_mask;
553 tx_intf_mask = ~tx_intf & tx_intf_mask;
554 }
555
556 rvu_write64(rvu, blkaddr,
557 NPC_AF_MCAMEX_BANKX_CAMX_INTF(index, bank, 1),
558 tx_intf);
559 rvu_write64(rvu, blkaddr,
560 NPC_AF_MCAMEX_BANKX_CAMX_INTF(index, bank, 0),
561 tx_intf_mask);
562
563 /* Set the match key */
564 npc_get_keyword(entry, kw, &cam0, &cam1);
565 rvu_write64(rvu, blkaddr,
566 NPC_AF_MCAMEX_BANKX_CAMX_W0(index, bank, 1), cam1);
567 rvu_write64(rvu, blkaddr,
568 NPC_AF_MCAMEX_BANKX_CAMX_W0(index, bank, 0), cam0);
569
570 npc_get_keyword(entry, kw + 1, &cam0, &cam1);
571 rvu_write64(rvu, blkaddr,
572 NPC_AF_MCAMEX_BANKX_CAMX_W1(index, bank, 1), cam1);
573 rvu_write64(rvu, blkaddr,
574 NPC_AF_MCAMEX_BANKX_CAMX_W1(index, bank, 0), cam0);
575 }
576
577 /* PF installing VF rule */
578 if (is_npc_intf_rx(intf) && actindex < mcam->bmap_entries)
579 npc_fixup_vf_rule(rvu, mcam, blkaddr, actindex, entry, &enable);
580
581 /* Set 'action' */
582 rvu_write64(rvu, blkaddr,
583 NPC_AF_MCAMEX_BANKX_ACTION(index, actbank), entry->action);
584
585 /* Set TAG 'action' */
586 rvu_write64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_TAG_ACT(index, actbank),
587 entry->vtag_action);
588
589 /* Enable the entry */
590 if (enable)
591 npc_enable_mcam_entry(rvu, mcam, blkaddr, actindex, true);
592 }
593
npc_read_mcam_entry(struct rvu * rvu,struct npc_mcam * mcam,int blkaddr,u16 src,struct mcam_entry * entry,u8 * intf,u8 * ena)594 void npc_read_mcam_entry(struct rvu *rvu, struct npc_mcam *mcam,
595 int blkaddr, u16 src,
596 struct mcam_entry *entry, u8 *intf, u8 *ena)
597 {
598 int sbank = npc_get_bank(mcam, src);
599 int bank, kw = 0;
600 u64 cam0, cam1;
601
602 src &= (mcam->banksize - 1);
603 bank = sbank;
604
605 for (; bank < (sbank + mcam->banks_per_entry); bank++, kw = kw + 2) {
606 cam1 = rvu_read64(rvu, blkaddr,
607 NPC_AF_MCAMEX_BANKX_CAMX_W0(src, bank, 1));
608 cam0 = rvu_read64(rvu, blkaddr,
609 NPC_AF_MCAMEX_BANKX_CAMX_W0(src, bank, 0));
610 npc_fill_entryword(entry, kw, cam0, cam1);
611
612 cam1 = rvu_read64(rvu, blkaddr,
613 NPC_AF_MCAMEX_BANKX_CAMX_W1(src, bank, 1));
614 cam0 = rvu_read64(rvu, blkaddr,
615 NPC_AF_MCAMEX_BANKX_CAMX_W1(src, bank, 0));
616 npc_fill_entryword(entry, kw + 1, cam0, cam1);
617 }
618
619 entry->action = rvu_read64(rvu, blkaddr,
620 NPC_AF_MCAMEX_BANKX_ACTION(src, sbank));
621 entry->vtag_action =
622 rvu_read64(rvu, blkaddr,
623 NPC_AF_MCAMEX_BANKX_TAG_ACT(src, sbank));
624 *intf = rvu_read64(rvu, blkaddr,
625 NPC_AF_MCAMEX_BANKX_CAMX_INTF(src, sbank, 1)) & 3;
626 *ena = rvu_read64(rvu, blkaddr,
627 NPC_AF_MCAMEX_BANKX_CFG(src, sbank)) & 1;
628 }
629
npc_copy_mcam_entry(struct rvu * rvu,struct npc_mcam * mcam,int blkaddr,u16 src,u16 dest)630 static int npc_copy_mcam_entry(struct rvu *rvu, struct npc_mcam *mcam,
631 int blkaddr, u16 src, u16 dest)
632 {
633 int dbank = npc_get_bank(mcam, dest);
634 int sbank = npc_get_bank(mcam, src);
635 u64 cfg, sreg, dreg;
636 int bank, i;
637
638 if (is_cn20k(rvu->pdev))
639 return npc_cn20k_copy_mcam_entry(rvu, blkaddr, src, dest);
640
641 src &= (mcam->banksize - 1);
642 dest &= (mcam->banksize - 1);
643
644 /* Copy INTF's, W0's, W1's CAM0 and CAM1 configuration */
645 for (bank = 0; bank < mcam->banks_per_entry; bank++) {
646 sreg = NPC_AF_MCAMEX_BANKX_CAMX_INTF(src, sbank + bank, 0);
647 dreg = NPC_AF_MCAMEX_BANKX_CAMX_INTF(dest, dbank + bank, 0);
648 for (i = 0; i < 6; i++) {
649 cfg = rvu_read64(rvu, blkaddr, sreg + (i * 8));
650 rvu_write64(rvu, blkaddr, dreg + (i * 8), cfg);
651 }
652 }
653
654 /* Copy action */
655 cfg = rvu_read64(rvu, blkaddr,
656 NPC_AF_MCAMEX_BANKX_ACTION(src, sbank));
657 rvu_write64(rvu, blkaddr,
658 NPC_AF_MCAMEX_BANKX_ACTION(dest, dbank), cfg);
659
660 /* Copy TAG action */
661 cfg = rvu_read64(rvu, blkaddr,
662 NPC_AF_MCAMEX_BANKX_TAG_ACT(src, sbank));
663 rvu_write64(rvu, blkaddr,
664 NPC_AF_MCAMEX_BANKX_TAG_ACT(dest, dbank), cfg);
665
666 /* Enable or disable */
667 cfg = rvu_read64(rvu, blkaddr,
668 NPC_AF_MCAMEX_BANKX_CFG(src, sbank));
669 rvu_write64(rvu, blkaddr,
670 NPC_AF_MCAMEX_BANKX_CFG(dest, dbank), cfg);
671 return 0;
672 }
673
npc_get_mcam_action(struct rvu * rvu,struct npc_mcam * mcam,int blkaddr,int index)674 u64 npc_get_mcam_action(struct rvu *rvu, struct npc_mcam *mcam,
675 int blkaddr, int index)
676 {
677 int bank = npc_get_bank(mcam, index);
678 u64 reg;
679
680 index &= (mcam->banksize - 1);
681
682 if (is_cn20k(rvu->pdev))
683 reg = NPC_AF_CN20K_MCAMEX_BANKX_ACTIONX_EXT(index, bank, 0);
684 else
685 reg = NPC_AF_MCAMEX_BANKX_ACTION(index, bank);
686 return rvu_read64(rvu, blkaddr, reg);
687 }
688
npc_set_mcam_action(struct rvu * rvu,struct npc_mcam * mcam,int blkaddr,int index,u64 cfg)689 void npc_set_mcam_action(struct rvu *rvu, struct npc_mcam *mcam,
690 int blkaddr, int index, u64 cfg)
691 {
692 int bank = npc_get_bank(mcam, index);
693 u64 reg;
694
695 index &= (mcam->banksize - 1);
696
697 if (is_cn20k(rvu->pdev))
698 reg = NPC_AF_CN20K_MCAMEX_BANKX_ACTIONX_EXT(index, bank, 0);
699 else
700 reg = NPC_AF_MCAMEX_BANKX_ACTION(index, bank);
701
702 return rvu_write64(rvu, blkaddr, reg, cfg);
703 }
704
rvu_get_cpt_chan_mask(struct rvu * rvu)705 u32 rvu_get_cpt_chan_mask(struct rvu *rvu)
706 {
707 /* For cn10k the upper two bits of the channel number are
708 * cpt channel number. with masking out these bits in the
709 * mcam entry, same entry used for NIX will allow packets
710 * received from cpt for parsing.
711 */
712 if (!is_rvu_otx2(rvu))
713 return NIX_CHAN_CPT_X2P_MASK;
714 else
715 return 0xFFFu;
716 }
717
rvu_npc_install_ucast_entry(struct rvu * rvu,u16 pcifunc,int nixlf,u64 chan,u8 * mac_addr)718 void rvu_npc_install_ucast_entry(struct rvu *rvu, u16 pcifunc,
719 int nixlf, u64 chan, u8 *mac_addr)
720 {
721 struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, pcifunc);
722 struct npc_install_flow_req req = { 0 };
723 struct npc_install_flow_rsp rsp = { 0 };
724 struct npc_mcam *mcam = &rvu->hw->mcam;
725 struct nix_rx_action action = { 0 };
726 int blkaddr, index;
727
728 /* AF's and SDP VFs work in promiscuous mode */
729 if (is_lbk_vf(rvu, pcifunc) || is_sdp_vf(rvu, pcifunc))
730 return;
731
732 blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
733 if (blkaddr < 0)
734 return;
735
736 /* Ucast rule should not be installed if DMAC
737 * extraction is not supported by the profile.
738 */
739 if (!npc_is_feature_supported(rvu, BIT_ULL(NPC_DMAC), pfvf->nix_rx_intf))
740 return;
741
742 index = npc_get_nixlf_mcam_index(mcam, pcifunc,
743 nixlf, NIXLF_UCAST_ENTRY);
744 if (index < 0) {
745 dev_err(rvu->dev,
746 "%s: Error to get ucast entry for pcifunc=%#x\n",
747 __func__, pcifunc);
748 return;
749 }
750
751 /* Don't change the action if entry is already enabled
752 * Otherwise RSS action may get overwritten.
753 */
754 if (is_mcam_entry_enabled(rvu, mcam, blkaddr, index)) {
755 *(u64 *)&action = npc_get_mcam_action(rvu, mcam,
756 blkaddr, index);
757 } else {
758 action.op = NIX_RX_ACTIONOP_UCAST;
759 action.pf_func = pcifunc;
760 }
761
762 req.default_rule = 1;
763 ether_addr_copy(req.packet.dmac, mac_addr);
764 eth_broadcast_addr((u8 *)&req.mask.dmac);
765 req.features = BIT_ULL(NPC_DMAC);
766 req.channel = chan;
767 req.chan_mask = rvu_get_cpt_chan_mask(rvu);
768 req.intf = pfvf->nix_rx_intf;
769 req.op = action.op;
770 req.hdr.pcifunc = 0; /* AF is requester */
771 req.vf = action.pf_func;
772 req.index = action.index;
773 req.match_id = action.match_id;
774 req.flow_key_alg = action.flow_key_alg;
775
776 if (is_cn20k(rvu->pdev))
777 req.hw_prio = pfvf->hw_prio;
778
779 rvu_mbox_handler_npc_install_flow(rvu, &req, &rsp);
780 }
781
rvu_npc_install_promisc_entry(struct rvu * rvu,u16 pcifunc,int nixlf,u64 chan,u8 chan_cnt)782 void rvu_npc_install_promisc_entry(struct rvu *rvu, u16 pcifunc,
783 int nixlf, u64 chan, u8 chan_cnt)
784 {
785 struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, pcifunc);
786 struct npc_install_flow_req req = { 0 };
787 struct npc_install_flow_rsp rsp = { 0 };
788 struct npc_mcam *mcam = &rvu->hw->mcam;
789 struct rvu_hwinfo *hw = rvu->hw;
790 int blkaddr, ucast_idx, index;
791 struct nix_rx_action action = { 0 };
792 u64 relaxed_mask;
793 u8 flow_key_alg;
794
795 if (!hw->cap.nix_rx_multicast && is_cgx_vf(rvu, pcifunc))
796 return;
797
798 blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
799 if (blkaddr < 0)
800 return;
801
802 index = npc_get_nixlf_mcam_index(mcam, pcifunc,
803 nixlf, NIXLF_PROMISC_ENTRY);
804
805 /* In cn20k, default indexes are installed only for CGX mapped
806 * and lbk interfaces
807 */
808 if (is_cgx_vf(rvu, pcifunc))
809 index = npc_get_nixlf_mcam_index(mcam,
810 pcifunc & ~RVU_PFVF_FUNC_MASK,
811 nixlf, NIXLF_PROMISC_ENTRY);
812
813 if (index < 0) {
814 dev_err(rvu->dev,
815 "%s: Error to get promisc entry for pcifunc=%#x\n",
816 __func__, pcifunc);
817 return;
818 }
819
820 /* If the corresponding PF's ucast action is RSS,
821 * use the same action for promisc also
822 * Please note that for lbk(s) "index" and "ucast_idx"
823 * will be same.
824 */
825 if (is_lbk_vf(rvu, pcifunc))
826 ucast_idx = index;
827 else
828 ucast_idx = npc_get_nixlf_mcam_index(mcam, pcifunc,
829 nixlf, NIXLF_UCAST_ENTRY);
830 if (ucast_idx < 0) {
831 dev_err(rvu->dev,
832 "%s: Error to get ucast/promisc entry for pcifunc=%#x\n",
833 __func__, pcifunc);
834 return;
835 }
836
837 if (is_mcam_entry_enabled(rvu, mcam, blkaddr, ucast_idx))
838 *(u64 *)&action = npc_get_mcam_action(rvu, mcam,
839 blkaddr, ucast_idx);
840
841 if (action.op != NIX_RX_ACTIONOP_RSS) {
842 *(u64 *)&action = 0;
843 action.op = NIX_RX_ACTIONOP_UCAST;
844 }
845
846 flow_key_alg = action.flow_key_alg;
847
848 /* RX_ACTION set to MCAST for CGX PF's */
849 if (hw->cap.nix_rx_multicast && pfvf->use_mce_list &&
850 is_pf_cgxmapped(rvu, rvu_get_pf(rvu->pdev, pcifunc))) {
851 *(u64 *)&action = 0;
852 action.op = NIX_RX_ACTIONOP_MCAST;
853 pfvf = rvu_get_pfvf(rvu, pcifunc & ~RVU_PFVF_FUNC_MASK);
854 action.index = pfvf->promisc_mce_idx;
855 }
856
857 /* For cn10k the upper two bits of the channel number are
858 * cpt channel number. with masking out these bits in the
859 * mcam entry, same entry used for NIX will allow packets
860 * received from cpt for parsing.
861 */
862 req.chan_mask = rvu_get_cpt_chan_mask(rvu);
863
864 if (chan_cnt > 1) {
865 if (!is_power_of_2(chan_cnt)) {
866 dev_err(rvu->dev,
867 "%s: channel count more than 1, must be power of 2\n", __func__);
868 return;
869 }
870 relaxed_mask = GENMASK_ULL(BITS_PER_LONG_LONG - 1,
871 ilog2(chan_cnt));
872 req.chan_mask &= relaxed_mask;
873 }
874
875 req.channel = chan;
876 req.intf = pfvf->nix_rx_intf;
877 req.entry = index;
878 req.op = action.op;
879 req.hdr.pcifunc = 0; /* AF is requester */
880 req.vf = pcifunc;
881 req.index = action.index;
882 req.match_id = action.match_id;
883 req.flow_key_alg = flow_key_alg;
884
885 if (is_cn20k(rvu->pdev))
886 req.hw_prio = pfvf->hw_prio;
887
888 rvu_mbox_handler_npc_install_flow(rvu, &req, &rsp);
889 }
890
rvu_npc_enable_promisc_entry(struct rvu * rvu,u16 pcifunc,int nixlf,bool enable)891 void rvu_npc_enable_promisc_entry(struct rvu *rvu, u16 pcifunc,
892 int nixlf, bool enable)
893 {
894 struct npc_mcam *mcam = &rvu->hw->mcam;
895 int blkaddr, index;
896
897 blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
898 if (blkaddr < 0)
899 return;
900
901 /* Get 'pcifunc' of PF device */
902 pcifunc = pcifunc & ~RVU_PFVF_FUNC_MASK;
903
904 index = npc_get_nixlf_mcam_index(mcam, pcifunc,
905 nixlf, NIXLF_PROMISC_ENTRY);
906
907 if (index < 0) {
908 dev_err(rvu->dev,
909 "%s: Error to get promisc entry for pcifunc=%#x\n",
910 __func__, pcifunc);
911 return;
912 }
913
914 npc_enable_mcam_entry(rvu, mcam, blkaddr, index, enable);
915 }
916
rvu_npc_install_bcast_match_entry(struct rvu * rvu,u16 pcifunc,int nixlf,u64 chan)917 void rvu_npc_install_bcast_match_entry(struct rvu *rvu, u16 pcifunc,
918 int nixlf, u64 chan)
919 {
920 struct rvu_pfvf *pfvf;
921 struct npc_install_flow_req req = { 0 };
922 struct npc_install_flow_rsp rsp = { 0 };
923 struct npc_mcam *mcam = &rvu->hw->mcam;
924 struct rvu_hwinfo *hw = rvu->hw;
925 int blkaddr, index;
926
927 blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
928 if (blkaddr < 0)
929 return;
930
931 /* Skip LBK VFs */
932 if (is_lbk_vf(rvu, pcifunc))
933 return;
934
935 /* If pkt replication is not supported,
936 * then only PF is allowed to add a bcast match entry.
937 */
938 if (!hw->cap.nix_rx_multicast && is_vf(pcifunc))
939 return;
940
941 /* Get 'pcifunc' of PF device */
942 pcifunc = pcifunc & ~RVU_PFVF_FUNC_MASK;
943 pfvf = rvu_get_pfvf(rvu, pcifunc);
944
945 /* Bcast rule should not be installed if both DMAC
946 * and LXMB extraction is not supported by the profile.
947 */
948 if (!npc_is_feature_supported(rvu, BIT_ULL(NPC_DMAC), pfvf->nix_rx_intf) &&
949 !npc_is_feature_supported(rvu, BIT_ULL(NPC_LXMB), pfvf->nix_rx_intf))
950 return;
951
952 index = npc_get_nixlf_mcam_index(mcam, pcifunc,
953 nixlf, NIXLF_BCAST_ENTRY);
954 if (index < 0) {
955 dev_err(rvu->dev,
956 "%s: Error to get bcast entry for pcifunc=%#x\n",
957 __func__, pcifunc);
958 return;
959 }
960
961 if (!hw->cap.nix_rx_multicast) {
962 /* Early silicon doesn't support pkt replication,
963 * so install entry with UCAST action, so that PF
964 * receives all broadcast packets.
965 */
966 req.op = NIX_RX_ACTIONOP_UCAST;
967 } else {
968 req.op = NIX_RX_ACTIONOP_MCAST;
969 req.index = pfvf->bcast_mce_idx;
970 }
971
972 eth_broadcast_addr((u8 *)&req.packet.dmac);
973 eth_broadcast_addr((u8 *)&req.mask.dmac);
974 req.features = BIT_ULL(NPC_DMAC);
975 req.channel = chan;
976 req.chan_mask = 0xFFFU;
977 req.intf = pfvf->nix_rx_intf;
978 req.entry = index;
979 req.hdr.pcifunc = 0; /* AF is requester */
980 req.vf = pcifunc;
981
982 if (is_cn20k(rvu->pdev))
983 req.hw_prio = pfvf->hw_prio;
984
985 rvu_mbox_handler_npc_install_flow(rvu, &req, &rsp);
986 }
987
rvu_npc_install_allmulti_entry(struct rvu * rvu,u16 pcifunc,int nixlf,u64 chan)988 void rvu_npc_install_allmulti_entry(struct rvu *rvu, u16 pcifunc, int nixlf,
989 u64 chan)
990 {
991 struct npc_install_flow_req req = { 0 };
992 struct npc_install_flow_rsp rsp = { 0 };
993 struct npc_mcam *mcam = &rvu->hw->mcam;
994 struct rvu_hwinfo *hw = rvu->hw;
995 int blkaddr, ucast_idx, index;
996 u8 mac_addr[ETH_ALEN] = { 0 };
997 struct nix_rx_action action = { 0 };
998 struct rvu_pfvf *pfvf;
999 u8 flow_key_alg;
1000 u16 vf_func;
1001
1002 /* Only CGX PF/VF can add allmulticast entry */
1003 if (is_lbk_vf(rvu, pcifunc) || is_sdp_vf(rvu, pcifunc))
1004 return;
1005
1006 blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
1007 if (blkaddr < 0)
1008 return;
1009
1010 /* Get 'pcifunc' of PF device */
1011 vf_func = pcifunc & RVU_PFVF_FUNC_MASK;
1012 pcifunc = pcifunc & ~RVU_PFVF_FUNC_MASK;
1013 pfvf = rvu_get_pfvf(rvu, pcifunc);
1014
1015 /* Mcast rule should not be installed if both DMAC
1016 * and LXMB extraction is not supported by the profile.
1017 */
1018 if (!npc_is_feature_supported(rvu, BIT_ULL(NPC_DMAC), pfvf->nix_rx_intf) &&
1019 !npc_is_feature_supported(rvu, BIT_ULL(NPC_LXMB), pfvf->nix_rx_intf))
1020 return;
1021
1022 index = npc_get_nixlf_mcam_index(mcam, pcifunc,
1023 nixlf, NIXLF_ALLMULTI_ENTRY);
1024 if (index < 0) {
1025 dev_err(rvu->dev,
1026 "%s: Error to get mcast entry for pcifunc=%#x\n",
1027 __func__, pcifunc);
1028 return;
1029 }
1030
1031 /* If the corresponding PF's ucast action is RSS,
1032 * use the same action for multicast entry also
1033 */
1034 ucast_idx = npc_get_nixlf_mcam_index(mcam, pcifunc,
1035 nixlf, NIXLF_UCAST_ENTRY);
1036 if (ucast_idx < 0) {
1037 dev_err(rvu->dev,
1038 "%s: Error to get ucast entry for pcifunc=%#x\n",
1039 __func__, pcifunc);
1040 return;
1041 }
1042
1043 if (is_mcam_entry_enabled(rvu, mcam, blkaddr, ucast_idx))
1044 *(u64 *)&action = npc_get_mcam_action(rvu, mcam,
1045 blkaddr, ucast_idx);
1046
1047 flow_key_alg = action.flow_key_alg;
1048 if (action.op != NIX_RX_ACTIONOP_RSS) {
1049 *(u64 *)&action = 0;
1050 action.op = NIX_RX_ACTIONOP_UCAST;
1051 action.pf_func = pcifunc;
1052 }
1053
1054 /* RX_ACTION set to MCAST for CGX PF's */
1055 if (hw->cap.nix_rx_multicast && pfvf->use_mce_list) {
1056 *(u64 *)&action = 0;
1057 action.op = NIX_RX_ACTIONOP_MCAST;
1058 action.index = pfvf->mcast_mce_idx;
1059 }
1060
1061 mac_addr[0] = 0x01; /* LSB bit of 1st byte in DMAC */
1062 ether_addr_copy(req.packet.dmac, mac_addr);
1063 ether_addr_copy(req.mask.dmac, mac_addr);
1064 req.features = BIT_ULL(NPC_DMAC);
1065
1066 req.chan_mask = rvu_get_cpt_chan_mask(rvu);
1067 req.channel = chan;
1068 req.intf = pfvf->nix_rx_intf;
1069 req.entry = index;
1070 req.op = action.op;
1071 req.hdr.pcifunc = 0; /* AF is requester */
1072 req.vf = pcifunc | vf_func;
1073 req.index = action.index;
1074 req.match_id = action.match_id;
1075 req.flow_key_alg = flow_key_alg;
1076
1077 if (is_cn20k(rvu->pdev))
1078 req.hw_prio = pfvf->hw_prio;
1079
1080 rvu_mbox_handler_npc_install_flow(rvu, &req, &rsp);
1081 }
1082
rvu_npc_enable_allmulti_entry(struct rvu * rvu,u16 pcifunc,int nixlf,bool enable)1083 void rvu_npc_enable_allmulti_entry(struct rvu *rvu, u16 pcifunc, int nixlf,
1084 bool enable)
1085 {
1086 struct npc_mcam *mcam = &rvu->hw->mcam;
1087 int blkaddr, index;
1088
1089 blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
1090 if (blkaddr < 0)
1091 return;
1092
1093 /* Get 'pcifunc' of PF device */
1094 pcifunc = pcifunc & ~RVU_PFVF_FUNC_MASK;
1095
1096 index = npc_get_nixlf_mcam_index(mcam, pcifunc, nixlf,
1097 NIXLF_ALLMULTI_ENTRY);
1098 if (index < 0) {
1099 dev_err(rvu->dev,
1100 "%s: Error to get mcast entry for pcifunc=%#x\n",
1101 __func__, pcifunc);
1102 return;
1103 }
1104
1105 npc_enable_mcam_entry(rvu, mcam, blkaddr, index, enable);
1106 }
1107
npc_update_vf_flow_entry(struct rvu * rvu,struct npc_mcam * mcam,int blkaddr,u16 pcifunc,u64 rx_action)1108 static void npc_update_vf_flow_entry(struct rvu *rvu, struct npc_mcam *mcam,
1109 int blkaddr, u16 pcifunc, u64 rx_action)
1110 {
1111 int actindex, index, bank, entry;
1112 struct rvu_npc_mcam_rule *rule;
1113 bool enable, update;
1114
1115 if (!(pcifunc & RVU_PFVF_FUNC_MASK))
1116 return;
1117
1118 mutex_lock(&mcam->lock);
1119 for (index = 0; index < mcam->bmap_entries; index++) {
1120 if (mcam->entry2target_pffunc[index] != pcifunc)
1121 continue;
1122 update = true;
1123 /* update not needed for the rules added via ntuple filters */
1124 list_for_each_entry(rule, &mcam->mcam_rules, list) {
1125 if (rule->entry == index)
1126 update = false;
1127 }
1128 if (!update)
1129 continue;
1130 bank = npc_get_bank(mcam, index);
1131 actindex = index;
1132 entry = index & (mcam->banksize - 1);
1133
1134 /* read vf flow entry enable status */
1135 enable = is_mcam_entry_enabled(rvu, mcam, blkaddr,
1136 actindex);
1137 /* disable before mcam entry update */
1138 npc_enable_mcam_entry(rvu, mcam, blkaddr, actindex,
1139 false);
1140
1141 /* update 'action' */
1142 if (is_cn20k(rvu->pdev))
1143 rvu_write64(rvu, blkaddr,
1144 NPC_AF_CN20K_MCAMEX_BANKX_ACTIONX_EXT(entry,
1145 bank,
1146 0),
1147 rx_action);
1148 else
1149 rvu_write64(rvu, blkaddr,
1150 NPC_AF_MCAMEX_BANKX_ACTION(entry, bank),
1151 rx_action);
1152
1153 if (enable)
1154 npc_enable_mcam_entry(rvu, mcam, blkaddr,
1155 actindex, true);
1156 }
1157 mutex_unlock(&mcam->lock);
1158 }
1159
npc_update_rx_action_with_alg_idx(struct rvu * rvu,struct nix_rx_action action,struct rvu_pfvf * pfvf,int mcam_index,int blkaddr,int alg_idx)1160 static void npc_update_rx_action_with_alg_idx(struct rvu *rvu, struct nix_rx_action action,
1161 struct rvu_pfvf *pfvf, int mcam_index, int blkaddr,
1162 int alg_idx)
1163
1164 {
1165 struct npc_mcam *mcam = &rvu->hw->mcam;
1166 struct rvu_hwinfo *hw = rvu->hw;
1167 int bank, op_rss;
1168 u64 reg;
1169
1170 if (!is_mcam_entry_enabled(rvu, mcam, blkaddr, mcam_index))
1171 return;
1172
1173 op_rss = (!hw->cap.nix_rx_multicast || !pfvf->use_mce_list);
1174
1175 bank = npc_get_bank(mcam, mcam_index);
1176 mcam_index &= (mcam->banksize - 1);
1177
1178 if (is_cn20k(rvu->pdev))
1179 reg = NPC_AF_CN20K_MCAMEX_BANKX_ACTIONX_EXT(mcam_index,
1180 bank, 0);
1181 else
1182 reg = NPC_AF_MCAMEX_BANKX_ACTION(mcam_index, bank);
1183
1184 /* If Rx action is MCAST update only RSS algorithm index */
1185 if (!op_rss) {
1186 *(u64 *)&action = rvu_read64(rvu, blkaddr, reg);
1187
1188 action.flow_key_alg = alg_idx;
1189 }
1190 rvu_write64(rvu, blkaddr, reg, *(u64 *)&action);
1191 }
1192
rvu_npc_update_flowkey_alg_idx(struct rvu * rvu,u16 pcifunc,int nixlf,int group,int alg_idx,int mcam_index)1193 void rvu_npc_update_flowkey_alg_idx(struct rvu *rvu, u16 pcifunc, int nixlf,
1194 int group, int alg_idx, int mcam_index)
1195 {
1196 struct npc_mcam *mcam = &rvu->hw->mcam;
1197 struct nix_rx_action action;
1198 int blkaddr, index, bank;
1199 struct rvu_pfvf *pfvf;
1200 u64 reg;
1201
1202 blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
1203 if (blkaddr < 0)
1204 return;
1205
1206 /* Check if this is for reserved default entry */
1207 if (mcam_index < 0) {
1208 if (group != DEFAULT_RSS_CONTEXT_GROUP)
1209 return;
1210 index = npc_get_nixlf_mcam_index(mcam, pcifunc,
1211 nixlf, NIXLF_UCAST_ENTRY);
1212 } else {
1213 /* TODO: validate this mcam index */
1214 index = mcam_index;
1215 }
1216
1217 if (index < 0 || index >= mcam->total_entries) {
1218 dev_err(rvu->dev,
1219 "%s: Invalid mcam index, pcifunc=%#x\n",
1220 __func__, pcifunc);
1221 return;
1222 }
1223
1224 bank = npc_get_bank(mcam, index);
1225 index &= (mcam->banksize - 1);
1226
1227 if (is_cn20k(rvu->pdev))
1228 reg = NPC_AF_CN20K_MCAMEX_BANKX_ACTIONX_EXT(index, bank, 0);
1229 else
1230 reg = NPC_AF_MCAMEX_BANKX_ACTION(index, bank);
1231
1232 *(u64 *)&action = rvu_read64(rvu, blkaddr, reg);
1233 /* Ignore if no action was set earlier */
1234 if (!*(u64 *)&action)
1235 return;
1236
1237 action.op = NIX_RX_ACTIONOP_RSS;
1238 action.pf_func = pcifunc;
1239 action.index = group;
1240 action.flow_key_alg = alg_idx;
1241
1242 rvu_write64(rvu, blkaddr, reg, *(u64 *)&action);
1243 /* update the VF flow rule action with the VF default entry action */
1244 if (mcam_index < 0)
1245 npc_update_vf_flow_entry(rvu, mcam, blkaddr, pcifunc,
1246 *(u64 *)&action);
1247
1248 /* update the action change in default rule */
1249 pfvf = rvu_get_pfvf(rvu, pcifunc);
1250 if (pfvf->def_ucast_rule)
1251 pfvf->def_ucast_rule->rx_action = action;
1252
1253 if (mcam_index < 0) {
1254 /* update the VF flow rule action with the VF default
1255 * entry action
1256 */
1257 npc_update_vf_flow_entry(rvu, mcam, blkaddr, pcifunc,
1258 *(u64 *)&action);
1259
1260 index = npc_get_nixlf_mcam_index(mcam, pcifunc,
1261 nixlf, NIXLF_PROMISC_ENTRY);
1262
1263 /* If PF's promiscuous entry is enabled,
1264 * Set RSS action for that entry as well
1265 */
1266 if (index >= 0)
1267 npc_update_rx_action_with_alg_idx(rvu, action, pfvf, index,
1268 blkaddr, alg_idx);
1269
1270 index = npc_get_nixlf_mcam_index(mcam, pcifunc,
1271 nixlf, NIXLF_ALLMULTI_ENTRY);
1272 /* If PF's allmulti entry is enabled,
1273 * Set RSS action for that entry as well
1274 */
1275 if (index >= 0)
1276 npc_update_rx_action_with_alg_idx(rvu, action, pfvf, index,
1277 blkaddr, alg_idx);
1278 }
1279 }
1280
npc_enadis_default_mce_entry(struct rvu * rvu,u16 pcifunc,int nixlf,int type,bool enable)1281 void npc_enadis_default_mce_entry(struct rvu *rvu, u16 pcifunc,
1282 int nixlf, int type, bool enable)
1283 {
1284 struct npc_mcam *mcam = &rvu->hw->mcam;
1285 struct rvu_hwinfo *hw = rvu->hw;
1286 struct nix_mce_list *mce_list;
1287 int index, blkaddr, mce_idx;
1288 struct rvu_pfvf *pfvf;
1289 u16 ptr[4];
1290
1291 /* multicast pkt replication is not enabled for AF's VFs & SDP links */
1292 if (is_lbk_vf(rvu, pcifunc) || is_sdp_pfvf(rvu, pcifunc))
1293 return;
1294
1295 /* In cn20k, only CGX mapped devices have default MCAST entry */
1296 if (is_cn20k(rvu->pdev) &&
1297 npc_cn20k_dft_rules_idx_get(rvu, pcifunc, &ptr[0], &ptr[1],
1298 &ptr[2], &ptr[3]))
1299 return;
1300
1301 blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
1302 if (blkaddr < 0)
1303 return;
1304
1305 index = npc_get_nixlf_mcam_index(mcam, pcifunc & ~RVU_PFVF_FUNC_MASK,
1306 nixlf, type);
1307 if (index < 0) {
1308 dev_err(rvu->dev,
1309 "%s: Error to get entry for pcifunc=%#x, type=%u\n",
1310 __func__, pcifunc, type);
1311 return;
1312 }
1313
1314 /* disable MCAM entry when packet replication is not supported by hw */
1315 if (!hw->cap.nix_rx_multicast && !is_vf(pcifunc)) {
1316 npc_enable_mcam_entry(rvu, mcam, blkaddr, index, enable);
1317 return;
1318 }
1319
1320 /* return incase mce list is not enabled */
1321 pfvf = rvu_get_pfvf(rvu, pcifunc & ~RVU_PFVF_FUNC_MASK);
1322 if (hw->cap.nix_rx_multicast && is_vf(pcifunc) &&
1323 type != NIXLF_BCAST_ENTRY && !pfvf->use_mce_list)
1324 return;
1325
1326 nix_get_mce_list(rvu, pcifunc, type, &mce_list, &mce_idx);
1327
1328 nix_update_mce_list(rvu, pcifunc, mce_list,
1329 mce_idx, index, enable);
1330 if (enable)
1331 npc_enable_mcam_entry(rvu, mcam, blkaddr, index, enable);
1332 }
1333
npc_enadis_default_entries(struct rvu * rvu,u16 pcifunc,int nixlf,bool enable)1334 static void npc_enadis_default_entries(struct rvu *rvu, u16 pcifunc,
1335 int nixlf, bool enable)
1336 {
1337 struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, pcifunc);
1338 struct npc_mcam *mcam = &rvu->hw->mcam;
1339 int index, blkaddr;
1340 u16 ptr[4];
1341
1342 /* only CGX or LBK interfaces have default entries */
1343 if (is_cn20k(rvu->pdev) &&
1344 npc_cn20k_dft_rules_idx_get(rvu, pcifunc, &ptr[0], &ptr[1],
1345 &ptr[2], &ptr[3]))
1346 return;
1347
1348 blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
1349 if (blkaddr < 0)
1350 return;
1351
1352 /* Ucast MCAM match entry of this PF/VF */
1353 if (npc_is_feature_supported(rvu, BIT_ULL(NPC_DMAC),
1354 pfvf->nix_rx_intf)) {
1355 index = npc_get_nixlf_mcam_index(mcam, pcifunc,
1356 nixlf, NIXLF_UCAST_ENTRY);
1357 if (index < 0) {
1358 dev_err(rvu->dev,
1359 "%s: Error to get ucast entry for pcifunc=%#x\n",
1360 __func__, pcifunc);
1361 return;
1362 }
1363 npc_enable_mcam_entry(rvu, mcam, blkaddr, index, enable);
1364 }
1365
1366 /* Nothing to do for VFs, on platforms where pkt replication
1367 * is not supported
1368 */
1369 if ((pcifunc & RVU_PFVF_FUNC_MASK) && !rvu->hw->cap.nix_rx_multicast)
1370 return;
1371
1372 /* add/delete pf_func to broadcast MCE list */
1373 npc_enadis_default_mce_entry(rvu, pcifunc, nixlf,
1374 NIXLF_BCAST_ENTRY, enable);
1375 }
1376
rvu_npc_disable_default_entries(struct rvu * rvu,u16 pcifunc,int nixlf)1377 void rvu_npc_disable_default_entries(struct rvu *rvu, u16 pcifunc, int nixlf)
1378 {
1379 if (nixlf < 0)
1380 return;
1381
1382 npc_enadis_default_entries(rvu, pcifunc, nixlf, false);
1383
1384 /* Delete multicast and promisc MCAM entries */
1385 npc_enadis_default_mce_entry(rvu, pcifunc, nixlf,
1386 NIXLF_ALLMULTI_ENTRY, false);
1387 npc_enadis_default_mce_entry(rvu, pcifunc, nixlf,
1388 NIXLF_PROMISC_ENTRY, false);
1389 }
1390
rvu_npc_enable_mcam_by_entry_index(struct rvu * rvu,int entry,int intf,bool enable)1391 bool rvu_npc_enable_mcam_by_entry_index(struct rvu *rvu, int entry, int intf, bool enable)
1392 {
1393 int blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
1394 struct npc_mcam *mcam = &rvu->hw->mcam;
1395 struct rvu_npc_mcam_rule *rule, *tmp;
1396
1397 mutex_lock(&mcam->lock);
1398
1399 list_for_each_entry_safe(rule, tmp, &mcam->mcam_rules, list) {
1400 if (rule->intf != intf)
1401 continue;
1402
1403 if (rule->entry != entry)
1404 continue;
1405
1406 rule->enable = enable;
1407 mutex_unlock(&mcam->lock);
1408
1409 npc_enable_mcam_entry(rvu, mcam, blkaddr,
1410 entry, enable);
1411
1412 return true;
1413 }
1414
1415 mutex_unlock(&mcam->lock);
1416 return false;
1417 }
1418
rvu_npc_enable_default_entries(struct rvu * rvu,u16 pcifunc,int nixlf)1419 void rvu_npc_enable_default_entries(struct rvu *rvu, u16 pcifunc, int nixlf)
1420 {
1421 if (nixlf < 0)
1422 return;
1423
1424 /* Enables only broadcast match entry. Promisc/Allmulti are enabled
1425 * in set_rx_mode mbox handler.
1426 */
1427 npc_enadis_default_entries(rvu, pcifunc, nixlf, true);
1428 }
1429
rvu_npc_disable_mcam_entries(struct rvu * rvu,u16 pcifunc,int nixlf)1430 void rvu_npc_disable_mcam_entries(struct rvu *rvu, u16 pcifunc, int nixlf)
1431 {
1432 struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, pcifunc);
1433 struct npc_mcam *mcam = &rvu->hw->mcam;
1434 struct rvu_npc_mcam_rule *rule, *tmp;
1435 int blkaddr;
1436
1437 blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
1438 if (blkaddr < 0)
1439 return;
1440
1441 mutex_lock(&mcam->lock);
1442
1443 /* Disable MCAM entries directing traffic to this 'pcifunc' */
1444 list_for_each_entry_safe(rule, tmp, &mcam->mcam_rules, list) {
1445 if (is_npc_intf_rx(rule->intf) &&
1446 rule->rx_action.pf_func == pcifunc &&
1447 rule->rx_action.op != NIX_RX_ACTIONOP_MCAST) {
1448 npc_enable_mcam_entry(rvu, mcam, blkaddr,
1449 rule->entry, false);
1450 rule->enable = false;
1451 /* Indicate that default rule is disabled */
1452 if (rule->default_rule) {
1453 pfvf->def_ucast_rule = NULL;
1454 list_del(&rule->list);
1455 kfree(rule);
1456 }
1457 }
1458 }
1459
1460 mutex_unlock(&mcam->lock);
1461
1462 npc_mcam_disable_flows(rvu, pcifunc);
1463
1464 rvu_npc_disable_default_entries(rvu, pcifunc, nixlf);
1465 }
1466
rvu_npc_free_mcam_entries(struct rvu * rvu,u16 pcifunc,int nixlf)1467 void rvu_npc_free_mcam_entries(struct rvu *rvu, u16 pcifunc, int nixlf)
1468 {
1469 struct npc_mcam *mcam = &rvu->hw->mcam;
1470 struct rvu_npc_mcam_rule *rule, *tmp;
1471 int blkaddr;
1472
1473 blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
1474 if (blkaddr < 0)
1475 return;
1476
1477 mutex_lock(&mcam->lock);
1478
1479 /* Free all MCAM entries owned by this 'pcifunc' */
1480 npc_mcam_free_all_entries(rvu, mcam, blkaddr, pcifunc);
1481
1482 /* Free all MCAM counters owned by this 'pcifunc' */
1483 npc_mcam_free_all_counters(rvu, mcam, pcifunc);
1484
1485 /* Delete MCAM entries owned by this 'pcifunc' */
1486 list_for_each_entry_safe(rule, tmp, &mcam->mcam_rules, list) {
1487 if (rule->owner == pcifunc && !rule->default_rule) {
1488 list_del(&rule->list);
1489 kfree(rule);
1490 }
1491 }
1492
1493 mutex_unlock(&mcam->lock);
1494
1495 rvu_npc_disable_default_entries(rvu, pcifunc, nixlf);
1496 }
1497
npc_program_mkex_rx(struct rvu * rvu,int blkaddr,const struct npc_mcam_kex * mkex,u8 intf)1498 static void npc_program_mkex_rx(struct rvu *rvu, int blkaddr,
1499 const struct npc_mcam_kex *mkex,
1500 u8 intf)
1501 {
1502 int lid, lt, ld, fl;
1503
1504 if (is_npc_intf_tx(intf))
1505 return;
1506
1507 rvu_write64(rvu, blkaddr, NPC_AF_INTFX_KEX_CFG(intf),
1508 mkex->keyx_cfg[NIX_INTF_RX]);
1509
1510 /* Program LDATA */
1511 for (lid = 0; lid < NPC_MAX_LID; lid++) {
1512 for (lt = 0; lt < NPC_MAX_LT; lt++) {
1513 for (ld = 0; ld < NPC_MAX_LD; ld++)
1514 SET_KEX_LD(intf, lid, lt, ld,
1515 mkex->intf_lid_lt_ld[NIX_INTF_RX]
1516 [lid][lt][ld]);
1517 }
1518 }
1519 /* Program LFLAGS */
1520 for (ld = 0; ld < NPC_MAX_LD; ld++) {
1521 for (fl = 0; fl < NPC_MAX_LFL; fl++)
1522 SET_KEX_LDFLAGS(intf, ld, fl,
1523 mkex->intf_ld_flags[NIX_INTF_RX]
1524 [ld][fl]);
1525 }
1526 }
1527
npc_program_mkex_tx(struct rvu * rvu,int blkaddr,const struct npc_mcam_kex * mkex,u8 intf)1528 static void npc_program_mkex_tx(struct rvu *rvu, int blkaddr,
1529 const struct npc_mcam_kex *mkex,
1530 u8 intf)
1531 {
1532 int lid, lt, ld, fl;
1533
1534 if (is_npc_intf_rx(intf))
1535 return;
1536
1537 rvu_write64(rvu, blkaddr, NPC_AF_INTFX_KEX_CFG(intf),
1538 mkex->keyx_cfg[NIX_INTF_TX]);
1539
1540 /* Program LDATA */
1541 for (lid = 0; lid < NPC_MAX_LID; lid++) {
1542 for (lt = 0; lt < NPC_MAX_LT; lt++) {
1543 for (ld = 0; ld < NPC_MAX_LD; ld++)
1544 SET_KEX_LD(intf, lid, lt, ld,
1545 mkex->intf_lid_lt_ld[NIX_INTF_TX]
1546 [lid][lt][ld]);
1547 }
1548 }
1549 /* Program LFLAGS */
1550 for (ld = 0; ld < NPC_MAX_LD; ld++) {
1551 for (fl = 0; fl < NPC_MAX_LFL; fl++)
1552 SET_KEX_LDFLAGS(intf, ld, fl,
1553 mkex->intf_ld_flags[NIX_INTF_TX]
1554 [ld][fl]);
1555 }
1556 }
1557
npc_program_mkex_profile(struct rvu * rvu,int blkaddr,const struct npc_mcam_kex * mkex)1558 static void npc_program_mkex_profile(struct rvu *rvu, int blkaddr,
1559 const struct npc_mcam_kex *mkex)
1560 {
1561 struct rvu_hwinfo *hw = rvu->hw;
1562 u8 intf;
1563 int ld;
1564
1565 for (ld = 0; ld < NPC_MAX_LD; ld++)
1566 rvu_write64(rvu, blkaddr, NPC_AF_KEX_LDATAX_FLAGS_CFG(ld),
1567 mkex->kex_ld_flags[ld]);
1568
1569 for (intf = 0; intf < hw->npc_intfs; intf++) {
1570 npc_program_mkex_rx(rvu, blkaddr, mkex, intf);
1571 npc_program_mkex_tx(rvu, blkaddr, mkex, intf);
1572 }
1573
1574 /* Programme mkex hash profile */
1575 npc_program_mkex_hash(rvu, blkaddr);
1576 }
1577
npc_fwdb_prfl_img_map(struct rvu * rvu,void __iomem ** prfl_img_addr,u64 * size)1578 int npc_fwdb_prfl_img_map(struct rvu *rvu, void __iomem **prfl_img_addr,
1579 u64 *size)
1580 {
1581 u64 prfl_addr, prfl_sz;
1582
1583 if (!rvu->fwdata)
1584 return -EINVAL;
1585
1586 prfl_addr = rvu->fwdata->mcam_addr;
1587 prfl_sz = rvu->fwdata->mcam_sz;
1588
1589 if (!prfl_addr || !prfl_sz)
1590 return -EINVAL;
1591
1592 *prfl_img_addr = ioremap_wc(prfl_addr, prfl_sz);
1593 if (!(*prfl_img_addr))
1594 return -ENOMEM;
1595
1596 *size = prfl_sz;
1597
1598 return 0;
1599 }
1600
1601 /* strtoull of "mkexprof" with base:36 */
1602 #define MKEX_END_SIGN 0xdeadbeef
1603
npc_load_mkex_profile(struct rvu * rvu,int blkaddr,const char * mkex_profile)1604 static void npc_load_mkex_profile(struct rvu *rvu, int blkaddr,
1605 const char *mkex_profile)
1606 {
1607 struct device *dev = &rvu->pdev->dev;
1608 struct npc_mcam_kex *mcam_kex;
1609 void __iomem *mkex_prfl_addr = NULL;
1610 u64 prfl_sz;
1611 int ret;
1612
1613 /* If user not selected mkex profile */
1614 if (rvu->kpu_fwdata_sz ||
1615 !strncmp(mkex_profile, def_pfl_name, MKEX_NAME_LEN))
1616 goto program_mkex;
1617
1618 /* Setting up the mapping for mkex profile image */
1619 ret = npc_fwdb_prfl_img_map(rvu, &mkex_prfl_addr, &prfl_sz);
1620 if (ret < 0)
1621 goto program_mkex;
1622
1623 mcam_kex = (struct npc_mcam_kex __force *)mkex_prfl_addr;
1624
1625 while (((s64)prfl_sz > 0) && (mcam_kex->mkex_sign != MKEX_END_SIGN)) {
1626 /* Compare with mkex mod_param name string */
1627 if (mcam_kex->mkex_sign == MKEX_SIGN &&
1628 !strncmp(mcam_kex->name, mkex_profile, MKEX_NAME_LEN)) {
1629 /* Due to an errata (35786) in A0/B0 pass silicon,
1630 * parse nibble enable configuration has to be
1631 * identical for both Rx and Tx interfaces.
1632 */
1633 if (!is_rvu_96xx_B0(rvu) ||
1634 mcam_kex->keyx_cfg[NIX_INTF_RX] == mcam_kex->keyx_cfg[NIX_INTF_TX])
1635 rvu->kpu.mcam_kex_prfl.mkex = mcam_kex;
1636 goto program_mkex;
1637 }
1638
1639 mcam_kex++;
1640 prfl_sz -= sizeof(struct npc_mcam_kex);
1641 }
1642 dev_warn(dev, "Failed to load requested profile: %s\n", mkex_profile);
1643
1644 program_mkex:
1645 dev_info(rvu->dev, "Using %s mkex profile\n",
1646 rvu->kpu.mcam_kex_prfl.mkex->name);
1647 /* Program selected mkex profile */
1648 npc_program_mkex_profile(rvu, blkaddr, rvu->kpu.mcam_kex_prfl.mkex);
1649 if (mkex_prfl_addr)
1650 iounmap(mkex_prfl_addr);
1651 }
1652
npc_config_kpuaction(struct rvu * rvu,int blkaddr,const struct npc_kpu_profile_action * kpuaction,int kpu,int entry,bool pkind)1653 void npc_config_kpuaction(struct rvu *rvu, int blkaddr,
1654 const struct npc_kpu_profile_action *kpuaction,
1655 int kpu, int entry, bool pkind)
1656 {
1657 struct npc_kpu_action0 action0 = {0};
1658 struct npc_kpu_action1 action1 = {0};
1659 u64 reg;
1660
1661 action1.errlev = kpuaction->errlev;
1662 action1.errcode = kpuaction->errcode;
1663 action1.dp0_offset = kpuaction->dp0_offset;
1664 action1.dp1_offset = kpuaction->dp1_offset;
1665 action1.dp2_offset = kpuaction->dp2_offset;
1666
1667 if (pkind)
1668 reg = NPC_AF_PKINDX_ACTION1(entry);
1669 else
1670 reg = NPC_AF_KPUX_ENTRYX_ACTION1(kpu, entry);
1671
1672 rvu_write64(rvu, blkaddr, reg, *(u64 *)&action1);
1673
1674 action0.byp_count = kpuaction->bypass_count;
1675 action0.capture_ena = kpuaction->cap_ena;
1676 action0.parse_done = kpuaction->parse_done;
1677 action0.next_state = kpuaction->next_state;
1678 action0.capture_lid = kpuaction->lid;
1679 action0.capture_ltype = kpuaction->ltype;
1680 action0.capture_flags = kpuaction->flags;
1681 action0.ptr_advance = kpuaction->ptr_advance;
1682 action0.var_len_offset = kpuaction->offset;
1683 action0.var_len_mask = kpuaction->mask;
1684 action0.var_len_right = kpuaction->right;
1685 action0.var_len_shift = kpuaction->shift;
1686
1687 if (pkind)
1688 reg = NPC_AF_PKINDX_ACTION0(entry);
1689 else
1690 reg = NPC_AF_KPUX_ENTRYX_ACTION0(kpu, entry);
1691
1692 rvu_write64(rvu, blkaddr, reg, *(u64 *)&action0);
1693 }
1694
npc_config_kpucam(struct rvu * rvu,int blkaddr,const struct npc_kpu_profile_cam * kpucam,int kpu,int entry)1695 static void npc_config_kpucam(struct rvu *rvu, int blkaddr,
1696 const struct npc_kpu_profile_cam *kpucam,
1697 int kpu, int entry)
1698 {
1699 const struct npc_kpu_profile_cam2 *kpucam2 = (void *)kpucam;
1700 struct npc_kpu_profile_adapter *profile = &rvu->kpu;
1701 struct npc_kpu_cam cam0 = {0};
1702 struct npc_kpu_cam cam1 = {0};
1703 u64 *val = (u64 *)&cam1;
1704 u64 *mask = (u64 *)&cam0;
1705
1706 cam1.state = kpucam->state & kpucam->state_mask;
1707 cam1.dp0_data = kpucam->dp0 & kpucam->dp0_mask;
1708 cam1.dp1_data = kpucam->dp1 & kpucam->dp1_mask;
1709 cam1.dp2_data = kpucam->dp2 & kpucam->dp2_mask;
1710
1711 cam0.state = ~kpucam->state & kpucam->state_mask;
1712 cam0.dp0_data = ~kpucam->dp0 & kpucam->dp0_mask;
1713 cam0.dp1_data = ~kpucam->dp1 & kpucam->dp1_mask;
1714 cam0.dp2_data = ~kpucam->dp2 & kpucam->dp2_mask;
1715
1716 if (profile->from_fs) {
1717 u8 ptype = kpucam2->ptype;
1718 u8 pmask = kpucam2->ptype_mask;
1719
1720 *val |= FIELD_PREP(GENMASK_ULL(57, 56), ptype & pmask);
1721 *mask |= FIELD_PREP(GENMASK_ULL(57, 56), ~ptype & pmask);
1722 }
1723
1724 rvu_write64(rvu, blkaddr,
1725 NPC_AF_KPUX_ENTRYX_CAMX(kpu, entry, 0), *(u64 *)&cam0);
1726 rvu_write64(rvu, blkaddr,
1727 NPC_AF_KPUX_ENTRYX_CAMX(kpu, entry, 1), *(u64 *)&cam1);
1728 }
1729
npc_enable_mask(int count)1730 u64 npc_enable_mask(int count)
1731 {
1732 return (((count) < 64) ? ~(BIT_ULL(count) - 1) : (0x00ULL));
1733 }
1734
1735 struct npc_kpu_profile_action *
npc_get_ikpu_nth_entry(struct rvu * rvu,int n)1736 npc_get_ikpu_nth_entry(struct rvu *rvu, int n)
1737 {
1738 struct npc_kpu_profile_adapter *profile = &rvu->kpu;
1739
1740 if (profile->from_fs)
1741 return &profile->ikpu2[n];
1742
1743 return &profile->ikpu[n];
1744 }
1745
1746 int
npc_get_num_kpu_cam_entries(struct rvu * rvu,const struct npc_kpu_profile * kpu_pfl)1747 npc_get_num_kpu_cam_entries(struct rvu *rvu,
1748 const struct npc_kpu_profile *kpu_pfl)
1749 {
1750 struct npc_kpu_profile_adapter *profile = &rvu->kpu;
1751
1752 if (profile->from_fs)
1753 return kpu_pfl->cam_entries2;
1754
1755 return kpu_pfl->cam_entries;
1756 }
1757
1758 struct npc_kpu_profile_cam *
npc_get_kpu_cam_nth_entry(struct rvu * rvu,const struct npc_kpu_profile * kpu_pfl,int n)1759 npc_get_kpu_cam_nth_entry(struct rvu *rvu,
1760 const struct npc_kpu_profile *kpu_pfl, int n)
1761 {
1762 struct npc_kpu_profile_adapter *profile = &rvu->kpu;
1763
1764 if (profile->from_fs)
1765 return (void *)&kpu_pfl->cam2[n];
1766
1767 return (void *)&kpu_pfl->cam[n];
1768 }
1769
1770 int
npc_get_num_kpu_action_entries(struct rvu * rvu,const struct npc_kpu_profile * kpu_pfl)1771 npc_get_num_kpu_action_entries(struct rvu *rvu,
1772 const struct npc_kpu_profile *kpu_pfl)
1773 {
1774 struct npc_kpu_profile_adapter *profile = &rvu->kpu;
1775
1776 if (profile->from_fs)
1777 return kpu_pfl->action_entries2;
1778
1779 return kpu_pfl->action_entries;
1780 }
1781
1782 struct npc_kpu_profile_action *
npc_get_kpu_action_nth_entry(struct rvu * rvu,const struct npc_kpu_profile * kpu_pfl,int n)1783 npc_get_kpu_action_nth_entry(struct rvu *rvu,
1784 const struct npc_kpu_profile *kpu_pfl,
1785 int n)
1786 {
1787 struct npc_kpu_profile_adapter *profile = &rvu->kpu;
1788
1789 if (profile->from_fs)
1790 return (void *)&kpu_pfl->action2[n];
1791
1792 return (void *)&kpu_pfl->action[n];
1793 }
1794
npc_program_kpu_profile(struct rvu * rvu,int blkaddr,int kpu,const struct npc_kpu_profile * profile)1795 static void npc_program_kpu_profile(struct rvu *rvu, int blkaddr, int kpu,
1796 const struct npc_kpu_profile *profile)
1797 {
1798 int num_cam_entries, num_action_entries;
1799 int entry, num_entries, max_entries;
1800 u64 entry_mask;
1801
1802 num_cam_entries = npc_get_num_kpu_cam_entries(rvu, profile);
1803 num_action_entries = npc_get_num_kpu_action_entries(rvu, profile);
1804
1805 if (num_cam_entries != num_action_entries) {
1806 dev_err(rvu->dev,
1807 "KPU%d: CAM and action entries [%d != %d] not equal\n",
1808 kpu, num_cam_entries, num_action_entries);
1809 }
1810
1811 max_entries = rvu->hw->npc_kpu_entries;
1812
1813 WARN(num_cam_entries > max_entries,
1814 "KPU%u: err: hw max entries=%u, input entries=%u\n",
1815 kpu, rvu->hw->npc_kpu_entries, num_cam_entries);
1816
1817 /* Program CAM match entries for previous KPU extracted data */
1818 num_entries = min_t(int, num_cam_entries, max_entries);
1819 for (entry = 0; entry < num_entries; entry++)
1820 npc_config_kpucam(rvu, blkaddr,
1821 (void *)npc_get_kpu_cam_nth_entry(rvu, profile, entry),
1822 kpu, entry);
1823
1824 /* Program this KPU's actions */
1825 num_entries = min_t(int, num_action_entries, max_entries);
1826 for (entry = 0; entry < num_entries; entry++)
1827 npc_config_kpuaction(rvu, blkaddr,
1828 (void *)npc_get_kpu_action_nth_entry(rvu, profile, entry),
1829 kpu, entry, false);
1830
1831 /* Enable all programmed entries */
1832 num_entries = min_t(int, num_action_entries, num_cam_entries);
1833 entry_mask = npc_enable_mask(num_entries);
1834 /* Disable first KPU_MAX_CST_ENT entries for built-in profile */
1835 if (!rvu->kpu.custom)
1836 entry_mask |= GENMASK_ULL(KPU_MAX_CST_ENT - 1, 0);
1837 rvu_write64(rvu, blkaddr,
1838 NPC_AF_KPUX_ENTRY_DISX(kpu, 0), entry_mask);
1839 if (num_entries > 64) {
1840 rvu_write64(rvu, blkaddr,
1841 NPC_AF_KPUX_ENTRY_DISX(kpu, 1),
1842 npc_enable_mask(num_entries - 64));
1843 }
1844
1845 /* Enable this KPU */
1846 rvu_write64(rvu, blkaddr, NPC_AF_KPUX_CFG(kpu), 0x01);
1847 }
1848
npc_prepare_default_kpu(struct rvu * rvu,struct npc_kpu_profile_adapter * profile)1849 static void npc_prepare_default_kpu(struct rvu *rvu,
1850 struct npc_kpu_profile_adapter *profile)
1851 {
1852 profile->custom = 0;
1853 profile->name = def_pfl_name;
1854 profile->version = NPC_KPU_PROFILE_VER;
1855 profile->ikpu = ikpu_action_entries;
1856 profile->pkinds = ARRAY_SIZE(ikpu_action_entries);
1857 profile->kpu = npc_kpu_profiles;
1858 profile->kpus = ARRAY_SIZE(npc_kpu_profiles);
1859 profile->lt_def = &npc_lt_defaults;
1860 profile->mkex_hash = &npc_mkex_hash_default;
1861
1862 if (!is_cn20k(rvu->pdev)) {
1863 profile->mcam_kex_prfl.mkex = &npc_mkex_default;
1864 return;
1865 }
1866
1867 profile->mcam_kex_prfl.mkex_extr = npc_mkex_extr_default_get();
1868 ikpu_action_entries[NPC_RX_CPT_HDR_PKIND].offset = 6;
1869 ikpu_action_entries[NPC_RX_CPT_HDR_PKIND].mask = 0xe0;
1870 ikpu_action_entries[NPC_RX_CPT_HDR_PKIND].shift = 0x5;
1871 ikpu_action_entries[NPC_RX_CPT_HDR_PKIND].right = 0x1;
1872
1873 npc_cn20k_update_action_entries_n_flags(rvu, profile);
1874 }
1875
npc_alloc_kpu_cam2_n_action2(struct rvu * rvu,int kpu_num,int num_entries)1876 static int npc_alloc_kpu_cam2_n_action2(struct rvu *rvu, int kpu_num,
1877 int num_entries)
1878 {
1879 struct npc_kpu_profile_adapter *adapter = &rvu->kpu;
1880 struct npc_kpu_profile *kpu;
1881
1882 kpu = &adapter->kpu[kpu_num];
1883
1884 kpu->cam2 = devm_kcalloc(rvu->dev, num_entries,
1885 sizeof(*kpu->cam2), GFP_KERNEL);
1886 if (!kpu->cam2)
1887 return -ENOMEM;
1888
1889 kpu->action2 = devm_kcalloc(rvu->dev, num_entries,
1890 sizeof(*kpu->action2), GFP_KERNEL);
1891 if (!kpu->action2)
1892 return -ENOMEM;
1893
1894 return 0;
1895 }
1896
npc_apply_custom_kpu_from_fw(struct rvu * rvu,struct npc_kpu_profile_adapter * profile)1897 static int npc_apply_custom_kpu_from_fw(struct rvu *rvu,
1898 struct npc_kpu_profile_adapter *profile)
1899 {
1900 size_t hdr_sz = sizeof(struct npc_kpu_profile_fwdata), offset = 0;
1901 const struct npc_kpu_profile_fwdata *fw;
1902 struct npc_kpu_profile_action *action;
1903 struct npc_kpu_profile_cam *cam;
1904 struct npc_kpu_fwdata *fw_kpu;
1905 int entries, entry, kpu;
1906
1907 fw = rvu->kpu_fwdata;
1908
1909 for (kpu = 0; kpu < fw->kpus; kpu++) {
1910 if (rvu->kpu_fwdata_sz < hdr_sz + offset) {
1911 dev_warn(rvu->dev,
1912 "Profile size mismatch on KPU%i parsing\n",
1913 kpu + 1);
1914 return -EINVAL;
1915 }
1916
1917 fw_kpu = (struct npc_kpu_fwdata *)(fw->data + offset);
1918 if (fw_kpu->entries < 0) {
1919 dev_warn(rvu->dev,
1920 "Profile entries is negative on KPU%i parsing\n",
1921 kpu + 1);
1922 return -EINVAL;
1923 }
1924
1925 if (fw_kpu->entries > KPU_MAX_CST_ENT)
1926 dev_warn(rvu->dev,
1927 "Too many custom entries on KPU%d: %d > %d\n",
1928 kpu, fw_kpu->entries, KPU_MAX_CST_ENT);
1929 entries = min_t(int, fw_kpu->entries, KPU_MAX_CST_ENT);
1930 cam = (struct npc_kpu_profile_cam *)fw_kpu->data;
1931 offset += sizeof(*fw_kpu) + fw_kpu->entries * sizeof(*cam);
1932 action = (struct npc_kpu_profile_action *)(fw->data + offset);
1933 offset += fw_kpu->entries * sizeof(*action);
1934 if (rvu->kpu_fwdata_sz < hdr_sz + offset) {
1935 dev_warn(rvu->dev,
1936 "Profile size mismatch on KPU%i parsing.\n",
1937 kpu + 1);
1938 return -EINVAL;
1939 }
1940 for (entry = 0; entry < entries; entry++) {
1941 profile->kpu[kpu].cam[entry] = cam[entry];
1942 profile->kpu[kpu].action[entry] = action[entry];
1943 }
1944 }
1945
1946 return 0;
1947 }
1948
npc_apply_custom_kpu_from_fs(struct rvu * rvu,struct npc_kpu_profile_adapter * profile)1949 static int npc_apply_custom_kpu_from_fs(struct rvu *rvu,
1950 struct npc_kpu_profile_adapter *profile)
1951 {
1952 size_t hdr_sz = sizeof(struct npc_kpu_profile_fwdata), offset = 0;
1953 const struct npc_kpu_profile_fwdata *fw;
1954 struct npc_kpu_profile_action *action;
1955 struct npc_kpu_profile_cam2 *cam2;
1956 struct npc_kpu_fwdata *fw_kpu;
1957 int entries, ret, entry, kpu;
1958
1959 fw = rvu->kpu_fwdata;
1960
1961 /* Binary blob contains ikpu actions entries at start of data[0] */
1962 profile->ikpu2 = devm_kcalloc(rvu->dev, 1,
1963 sizeof(ikpu_action_entries),
1964 GFP_KERNEL);
1965 if (!profile->ikpu2)
1966 return -ENOMEM;
1967
1968 action = (struct npc_kpu_profile_action *)(fw->data + offset);
1969
1970 if (rvu->kpu_fwdata_sz < hdr_sz + sizeof(ikpu_action_entries))
1971 return -EINVAL;
1972
1973 /* The firmware layout does dependent on the internal size of
1974 * ikpu_action_entries.
1975 */
1976 memcpy((void *)profile->ikpu2, action, sizeof(ikpu_action_entries));
1977 offset += sizeof(ikpu_action_entries);
1978
1979 for (kpu = 0; kpu < fw->kpus; kpu++) {
1980 if (rvu->kpu_fwdata_sz < hdr_sz + offset + sizeof(*fw_kpu)) {
1981 dev_warn(rvu->dev,
1982 "profile size mismatch on kpu%i parsing\n",
1983 kpu + 1);
1984 return -EINVAL;
1985 }
1986
1987 fw_kpu = (struct npc_kpu_fwdata *)(fw->data + offset);
1988 if (fw_kpu->entries <= 0) {
1989 dev_warn(rvu->dev,
1990 "Invalid kpu entries on KPU%d\n", kpu);
1991 return -EINVAL;
1992 }
1993
1994 entries = min_t(int, fw_kpu->entries, rvu->hw->npc_kpu_entries);
1995 dev_info(rvu->dev,
1996 "Loading %u entries on KPU%d\n", entries, kpu);
1997
1998 cam2 = (struct npc_kpu_profile_cam2 *)fw_kpu->data;
1999 offset += sizeof(*fw_kpu) + fw_kpu->entries * sizeof(*cam2);
2000 action = (struct npc_kpu_profile_action *)(fw->data + offset);
2001 offset += fw_kpu->entries * sizeof(*action);
2002 if (rvu->kpu_fwdata_sz < hdr_sz + offset) {
2003 dev_warn(rvu->dev,
2004 "profile size mismatch on kpu%i parsing.\n",
2005 kpu + 1);
2006 return -EINVAL;
2007 }
2008
2009 profile->kpu[kpu].cam_entries2 = entries;
2010 profile->kpu[kpu].action_entries2 = entries;
2011 ret = npc_alloc_kpu_cam2_n_action2(rvu, kpu, entries);
2012 if (ret) {
2013 dev_warn(rvu->dev,
2014 "profile entry allocation failed for kpu=%d for %d entries\n",
2015 kpu, entries);
2016 return -EINVAL;
2017 }
2018
2019 for (entry = 0; entry < entries; entry++) {
2020 profile->kpu[kpu].cam2[entry] = cam2[entry];
2021 profile->kpu[kpu].action2[entry] = action[entry];
2022 }
2023 }
2024
2025 return 0;
2026 }
2027
npc_apply_custom_kpu(struct rvu * rvu,struct npc_kpu_profile_adapter * profile,bool from_fs,int * fw_kpus)2028 static int npc_apply_custom_kpu(struct rvu *rvu,
2029 struct npc_kpu_profile_adapter *profile,
2030 bool from_fs, int *fw_kpus)
2031 {
2032 size_t hdr_sz = sizeof(struct npc_kpu_profile_fwdata);
2033 const struct npc_kpu_profile_fwdata *fw;
2034 struct npc_kpu_profile_fwdata *sfw;
2035
2036 if (is_cn20k(rvu->pdev))
2037 return npc_cn20k_apply_custom_kpu(rvu, profile);
2038
2039 if (rvu->kpu_fwdata_sz < hdr_sz) {
2040 dev_warn(rvu->dev, "Invalid KPU profile size\n");
2041 return -EINVAL;
2042 }
2043
2044 fw = rvu->kpu_fwdata;
2045 if (le64_to_cpu(fw->signature) != KPU_SIGN) {
2046 dev_warn(rvu->dev, "Invalid KPU profile signature %llx\n",
2047 fw->signature);
2048 return -EINVAL;
2049 }
2050 /* Verify if the using known profile structure */
2051 if (NPC_KPU_VER_MAJ(profile->version) >
2052 NPC_KPU_VER_MAJ(NPC_KPU_PROFILE_VER)) {
2053 dev_warn(rvu->dev, "Not supported Major version: %d > %d\n",
2054 NPC_KPU_VER_MAJ(profile->version),
2055 NPC_KPU_VER_MAJ(NPC_KPU_PROFILE_VER));
2056 return -EINVAL;
2057 }
2058 /* Verify if profile is aligned with the required kernel changes */
2059 if (NPC_KPU_VER_MIN(profile->version) <
2060 NPC_KPU_VER_MIN(NPC_KPU_PROFILE_VER)) {
2061 dev_warn(rvu->dev,
2062 "Invalid KPU profile version: %d.%d.%d expected version <= %d.%d.%d\n",
2063 NPC_KPU_VER_MAJ(profile->version),
2064 NPC_KPU_VER_MIN(profile->version),
2065 NPC_KPU_VER_PATCH(profile->version),
2066 NPC_KPU_VER_MAJ(NPC_KPU_PROFILE_VER),
2067 NPC_KPU_VER_MIN(NPC_KPU_PROFILE_VER),
2068 NPC_KPU_VER_PATCH(NPC_KPU_PROFILE_VER));
2069 return -EINVAL;
2070 }
2071 /* Verify if profile fits the HW */
2072 if (fw->kpus > rvu->hw->npc_kpus) {
2073 dev_warn(rvu->dev, "Not enough KPUs: %d > %d\n", fw->kpus,
2074 rvu->hw->npc_kpus);
2075 return -EINVAL;
2076 }
2077
2078 /* Check if there is enough memory for fw loading.
2079 * Check if there is enough entries for profile->kpu[] to
2080 * set cam_entries2 and action_entries2
2081 */
2082 if (fw->kpus > profile->kpus) {
2083 dev_warn(rvu->dev, "Not enough KPUs: %d > %zu\n", fw->kpus,
2084 profile->kpus);
2085 return -EINVAL;
2086 }
2087
2088 *fw_kpus = fw->kpus;
2089
2090 sfw = devm_kcalloc(rvu->dev, 1, sizeof(*sfw), GFP_KERNEL);
2091 if (!sfw)
2092 return -ENOMEM;
2093
2094 memcpy(sfw, fw, sizeof(*sfw));
2095
2096 profile->custom = 1;
2097 profile->name = sfw->name;
2098 profile->version = le64_to_cpu(fw->version);
2099 profile->mcam_kex_prfl.mkex = &sfw->mkex;
2100 profile->lt_def = &sfw->lt_def;
2101
2102 return from_fs ? npc_apply_custom_kpu_from_fs(rvu, profile) :
2103 npc_apply_custom_kpu_from_fw(rvu, profile);
2104 }
2105
npc_load_kpu_prfl_img(struct rvu * rvu,void __iomem * prfl_addr,u64 prfl_sz,const char * kpu_profile)2106 static int npc_load_kpu_prfl_img(struct rvu *rvu, void __iomem *prfl_addr,
2107 u64 prfl_sz, const char *kpu_profile)
2108 {
2109 struct npc_kpu_profile_fwdata *kpu_data = NULL;
2110 int rc = -EINVAL;
2111
2112 kpu_data = (struct npc_kpu_profile_fwdata __force *)prfl_addr;
2113 if (le64_to_cpu(kpu_data->signature) == KPU_SIGN &&
2114 !strncmp(kpu_data->name, kpu_profile, KPU_NAME_LEN)) {
2115 dev_info(rvu->dev, "Loading KPU profile from firmware db: %s\n",
2116 kpu_profile);
2117 rvu->kpu_fwdata = kpu_data;
2118 rvu->kpu_fwdata_sz = prfl_sz;
2119 rvu->kpu_prfl_addr = prfl_addr;
2120 rc = 0;
2121 }
2122
2123 return rc;
2124 }
2125
npc_fwdb_detect_load_prfl_img(struct rvu * rvu,uint64_t prfl_sz,const char * kpu_profile)2126 static int npc_fwdb_detect_load_prfl_img(struct rvu *rvu, uint64_t prfl_sz,
2127 const char *kpu_profile)
2128 {
2129 struct npc_coalesced_kpu_prfl *img_data = NULL;
2130 int i = 0, rc = -EINVAL;
2131 void __iomem *kpu_prfl_addr;
2132 u32 offset;
2133
2134 img_data = (struct npc_coalesced_kpu_prfl __force *)rvu->kpu_prfl_addr;
2135 if (le64_to_cpu(img_data->signature) == KPU_SIGN &&
2136 !strncmp(img_data->name, kpu_profile, KPU_NAME_LEN)) {
2137 /* Loaded profile is a single KPU profile. */
2138 rc = npc_load_kpu_prfl_img(rvu, rvu->kpu_prfl_addr,
2139 prfl_sz, kpu_profile);
2140 goto done;
2141 }
2142
2143 /* Loaded profile is coalesced image, offset of first KPU profile.*/
2144 offset = offsetof(struct npc_coalesced_kpu_prfl, prfl_sz) +
2145 (img_data->num_prfl * sizeof(uint16_t));
2146 /* Check if mapped image is coalesced image. */
2147 while (i < img_data->num_prfl) {
2148 /* Profile image offsets are rounded up to next 8 multiple.*/
2149 offset = ALIGN_8B_CEIL(offset);
2150 kpu_prfl_addr = (void __iomem *)((uintptr_t)rvu->kpu_prfl_addr +
2151 offset);
2152 rc = npc_load_kpu_prfl_img(rvu, kpu_prfl_addr,
2153 img_data->prfl_sz[i], kpu_profile);
2154 if (!rc)
2155 break;
2156 /* Calculating offset of profile image based on profile size.*/
2157 offset += img_data->prfl_sz[i];
2158 i++;
2159 }
2160 done:
2161 return rc;
2162 }
2163
npc_load_kpu_profile_fwdb(struct rvu * rvu,const char * kpu_profile)2164 static int npc_load_kpu_profile_fwdb(struct rvu *rvu, const char *kpu_profile)
2165 {
2166 int ret = -EINVAL;
2167 u64 prfl_sz;
2168
2169 /* Setting up the mapping for NPC profile image */
2170 ret = npc_fwdb_prfl_img_map(rvu, &rvu->kpu_prfl_addr, &prfl_sz);
2171 if (ret < 0)
2172 goto done;
2173
2174 /* Detect if profile is coalesced or single KPU profile and load */
2175 ret = npc_fwdb_detect_load_prfl_img(rvu, prfl_sz, kpu_profile);
2176 if (ret == 0)
2177 goto done;
2178
2179 /* Cleaning up if KPU profile image from fwdata is not valid. */
2180 if (rvu->kpu_prfl_addr) {
2181 iounmap(rvu->kpu_prfl_addr);
2182 rvu->kpu_prfl_addr = NULL;
2183 rvu->kpu_fwdata_sz = 0;
2184 rvu->kpu_fwdata = NULL;
2185 }
2186
2187 done:
2188 return ret;
2189 }
2190
npc_load_kpu_profile_from_fw(struct rvu * rvu)2191 static int npc_load_kpu_profile_from_fw(struct rvu *rvu)
2192 {
2193 struct npc_kpu_profile_adapter *profile = &rvu->kpu;
2194 const char *kpu_profile = rvu->kpu_pfl_name;
2195 int fw_kpus = 0;
2196
2197 /* Loading the KPU profile using firmware database */
2198 if (npc_load_kpu_profile_fwdb(rvu, kpu_profile))
2199 return -EFAULT;
2200
2201 /* Apply profile customization if firmware was loaded. */
2202 if (!rvu->kpu_fwdata_sz ||
2203 npc_apply_custom_kpu(rvu, profile, false, &fw_kpus)) {
2204 /* If image from firmware filesystem fails to load or invalid
2205 * retry with firmware database method.
2206 */
2207 if (rvu->kpu_fwdata || rvu->kpu_fwdata_sz) {
2208 /* Loading image from firmware database failed. */
2209 if (rvu->kpu_prfl_addr) {
2210 iounmap(rvu->kpu_prfl_addr);
2211 rvu->kpu_prfl_addr = NULL;
2212 } else {
2213 kfree(rvu->kpu_fwdata);
2214 }
2215 rvu->kpu_fwdata = NULL;
2216 rvu->kpu_fwdata_sz = 0;
2217 }
2218
2219 dev_warn(rvu->dev,
2220 "Can't load KPU profile %s. Using default.\n",
2221 kpu_profile);
2222 kfree(rvu->kpu_fwdata);
2223 rvu->kpu_fwdata = NULL;
2224 return -EFAULT;
2225 }
2226
2227 dev_info(rvu->dev, "Using custom profile '%.32s', version %d.%d.%d\n",
2228 profile->name, NPC_KPU_VER_MAJ(profile->version),
2229 NPC_KPU_VER_MIN(profile->version),
2230 NPC_KPU_VER_PATCH(profile->version));
2231
2232 return 0;
2233 }
2234
npc_load_kpu_profile_from_fs(struct rvu * rvu)2235 static int npc_load_kpu_profile_from_fs(struct rvu *rvu)
2236 {
2237 struct npc_kpu_profile_adapter *profile = &rvu->kpu;
2238 const char *kpu_profile = rvu->kpu_pfl_name;
2239 const struct firmware *fw = NULL;
2240 int ret, fw_kpus = 0;
2241 char path[512] = "kpu/";
2242
2243 if (strlen(kpu_profile) > sizeof(path) - strlen("kpu/") - 1) {
2244 dev_err(rvu->dev, "kpu profile name is too big\n");
2245 return -ENOSPC;
2246 }
2247
2248 strcat(path, kpu_profile);
2249
2250 if (request_firmware_direct(&fw, path, rvu->dev))
2251 return -ENOENT;
2252
2253 dev_info(rvu->dev, "Loading KPU profile from filesystem: %s\n",
2254 path);
2255
2256 rvu->kpu_fwdata = fw->data;
2257 rvu->kpu_fwdata_sz = fw->size;
2258
2259 ret = npc_apply_custom_kpu(rvu, profile, true, &fw_kpus);
2260 release_firmware(fw);
2261 rvu->kpu_fwdata = NULL;
2262
2263 if (ret) {
2264 rvu->kpu_fwdata_sz = 0;
2265 dev_err(rvu->dev,
2266 "Loading KPU profile from filesystem failed\n");
2267 return ret;
2268 }
2269
2270 /* In firmware loading from filesystem method, all entries are from
2271 * same binary blob.
2272 */
2273 rvu->kpu.kpus = fw_kpus;
2274 profile->kpus = fw_kpus;
2275 profile->from_fs = true;
2276 return 0;
2277 }
2278
npc_load_kpu_profile(struct rvu * rvu)2279 void npc_load_kpu_profile(struct rvu *rvu)
2280 {
2281 struct npc_kpu_profile_adapter *profile = &rvu->kpu;
2282 const char *kpu_profile = rvu->kpu_pfl_name;
2283
2284 profile->from_fs = false;
2285
2286 npc_prepare_default_kpu(rvu, profile);
2287
2288 /* If user not specified profile customization */
2289 if (!strncmp(kpu_profile, def_pfl_name, KPU_NAME_LEN))
2290 return;
2291
2292 /* Order of preceedence for load loading NPC profile (high to low)
2293 * Firmware binary in filesystem.
2294 * Firmware database method.
2295 * Default KPU profile.
2296 */
2297
2298 /* Filesystem-based KPU loading is not supported on cn20k.
2299 * npc_prepare_default_kpu() was invoked earlier, but control
2300 * reached this point because the default profile was not selected.
2301 * No need to call it again.
2302 */
2303 if (!is_cn20k(rvu->pdev)) {
2304 if (!npc_load_kpu_profile_from_fs(rvu))
2305 return;
2306 }
2307
2308 /* First prepare default KPU, then we'll customize top entries. */
2309 npc_prepare_default_kpu(rvu, profile);
2310 if (!npc_load_kpu_profile_from_fw(rvu))
2311 return;
2312
2313 npc_prepare_default_kpu(rvu, profile);
2314 }
2315
npc_parser_profile_init(struct rvu * rvu,int blkaddr)2316 static void npc_parser_profile_init(struct rvu *rvu, int blkaddr)
2317 {
2318 struct npc_kpu_profile_adapter *profile = &rvu->kpu;
2319 struct rvu_hwinfo *hw = rvu->hw;
2320 int num_pkinds, num_kpus, idx;
2321
2322 /* Disable all KPUs and their entries */
2323 for (idx = 0; idx < hw->npc_kpus; idx++) {
2324 rvu_write64(rvu, blkaddr,
2325 NPC_AF_KPUX_ENTRY_DISX(idx, 0), ~0ULL);
2326 rvu_write64(rvu, blkaddr,
2327 NPC_AF_KPUX_ENTRY_DISX(idx, 1), ~0ULL);
2328 rvu_write64(rvu, blkaddr, NPC_AF_KPUX_CFG(idx), 0x00);
2329 }
2330
2331 /* Load and customize KPU profile. */
2332 npc_load_kpu_profile(rvu);
2333
2334 /* First program IKPU profile i.e PKIND configs.
2335 * Check HW max count to avoid configuring junk or
2336 * writing to unsupported CSR addresses.
2337 */
2338 num_pkinds = rvu->kpu.pkinds;
2339 num_pkinds = min_t(int, hw->npc_pkinds, num_pkinds);
2340
2341 for (idx = 0; idx < num_pkinds; idx++)
2342 npc_config_kpuaction(rvu, blkaddr,
2343 npc_get_ikpu_nth_entry(rvu, idx),
2344 0, idx, true);
2345
2346 /* Program KPU CAM and Action profiles */
2347 num_kpus = rvu->kpu.kpus;
2348 num_kpus = min_t(int, hw->npc_kpus, num_kpus);
2349
2350 for (idx = 0; idx < num_kpus; idx++)
2351 npc_program_kpu_profile(rvu, blkaddr, idx, &rvu->kpu.kpu[idx]);
2352
2353 if (profile->from_fs) {
2354 rvu_write64(rvu, blkaddr, NPC_AF_PKINDX_TYPE(54), 0x03);
2355 rvu_write64(rvu, blkaddr, NPC_AF_PKINDX_TYPE(58), 0x03);
2356 }
2357 }
2358
npc_mcam_rsrcs_deinit(struct rvu * rvu)2359 void npc_mcam_rsrcs_deinit(struct rvu *rvu)
2360 {
2361 struct npc_mcam *mcam = &rvu->hw->mcam;
2362
2363 bitmap_free(mcam->bmap);
2364 bitmap_free(mcam->bmap_reverse);
2365 kfree(mcam->entry2pfvf_map);
2366 kfree(mcam->cntr2pfvf_map);
2367 kfree(mcam->entry2cntr_map);
2368 kfree(mcam->cntr_refcnt);
2369 kfree(mcam->entry2target_pffunc);
2370 kfree(mcam->counters.bmap);
2371 }
2372
npc_mcam_rsrcs_init(struct rvu * rvu,int blkaddr)2373 int npc_mcam_rsrcs_init(struct rvu *rvu, int blkaddr)
2374 {
2375 int nixlf_count = rvu_get_nixlf_count(rvu);
2376 struct npc_mcam *mcam = &rvu->hw->mcam;
2377 int rsvd, err;
2378 u16 index;
2379 int cntr;
2380 u64 cfg;
2381
2382 cfg = (rvu_read64(rvu, blkaddr,
2383 NPC_AF_INTFX_KEX_CFG(0)) >> 32) & 0x07;
2384 mcam->keysize = cfg;
2385
2386 /* Number of banks combined per MCAM entry */
2387 if (is_cn20k(rvu->pdev)) {
2388 /* In cn20k, x2 entries is allowed for x4 profile.
2389 * set total_entries as 8192 * 2 and key size as x2.
2390 */
2391 mcam->total_entries = mcam->banks * mcam->banksize;
2392 if (cfg == NPC_MCAM_KEY_X2)
2393 mcam->banks_per_entry = 1;
2394 else
2395 mcam->banks_per_entry = 2;
2396
2397 rsvd = 0;
2398 } else {
2399 mcam->total_entries = (mcam->banks / BIT_ULL(cfg)) *
2400 mcam->banksize;
2401
2402 if (cfg == NPC_MCAM_KEY_X4)
2403 mcam->banks_per_entry = 4;
2404 else if (cfg == NPC_MCAM_KEY_X2)
2405 mcam->banks_per_entry = 2;
2406 else
2407 mcam->banks_per_entry = 1;
2408
2409 /* Reserve one MCAM entry for each of the NIX LF to
2410 * guarantee space to install default matching DMAC rule.
2411 * Also reserve 2 MCAM entries for each PF for default
2412 * channel based matching or 'bcast & promisc' matching to
2413 * support BCAST and PROMISC modes of operation for PFs.
2414 * PF0 is excluded.
2415 */
2416 rsvd = (nixlf_count * RSVD_MCAM_ENTRIES_PER_NIXLF) +
2417 ((rvu->hw->total_pfs - 1) * RSVD_MCAM_ENTRIES_PER_PF);
2418 if (mcam->total_entries <= rsvd) {
2419 dev_warn(rvu->dev,
2420 "Insufficient NPC MCAM size %d for pkt I/O, exiting\n",
2421 mcam->total_entries);
2422 return -ENOMEM;
2423 }
2424 }
2425
2426 mcam->bmap_entries = mcam->total_entries - rsvd;
2427 /* cn20k does not need offsets to alloc mcam entries */
2428 if (!is_cn20k(rvu->pdev)) {
2429 mcam->nixlf_offset = mcam->bmap_entries;
2430 mcam->pf_offset = mcam->nixlf_offset + nixlf_count;
2431 }
2432
2433 /* Allocate bitmaps for managing MCAM entries */
2434 mcam->bmap = bitmap_zalloc(mcam->bmap_entries, GFP_KERNEL);
2435 if (!mcam->bmap)
2436 return -ENOMEM;
2437
2438 mcam->bmap_reverse = bitmap_zalloc(mcam->bmap_entries, GFP_KERNEL);
2439 if (!mcam->bmap_reverse)
2440 goto free_bmap;
2441
2442 mcam->bmap_fcnt = mcam->bmap_entries;
2443
2444 /* Alloc memory for saving entry to RVU PFFUNC allocation mapping */
2445 mcam->entry2pfvf_map = kcalloc(mcam->bmap_entries, sizeof(u16),
2446 GFP_KERNEL);
2447
2448 if (!mcam->entry2pfvf_map)
2449 goto free_bmap_reverse;
2450
2451 /* Reserve 1/8th of MCAM entries at the bottom for low priority
2452 * allocations and another 1/8th at the top for high priority
2453 * allocations.
2454 */
2455 if (!is_cn20k(rvu->pdev)) {
2456 mcam->lprio_count = mcam->bmap_entries / 8;
2457 if (mcam->lprio_count > BITS_PER_LONG)
2458 mcam->lprio_count = round_down(mcam->lprio_count,
2459 BITS_PER_LONG);
2460 mcam->lprio_start = mcam->bmap_entries - mcam->lprio_count;
2461 mcam->hprio_count = mcam->lprio_count;
2462 mcam->hprio_end = mcam->hprio_count;
2463 }
2464
2465 /* Allocate bitmap for managing MCAM counters and memory
2466 * for saving counter to RVU PFFUNC allocation mapping.
2467 */
2468 err = rvu_alloc_bitmap(&mcam->counters);
2469 if (err)
2470 goto free_entry_map;
2471
2472 mcam->cntr2pfvf_map = kcalloc(mcam->counters.max, sizeof(u16),
2473 GFP_KERNEL);
2474 if (!mcam->cntr2pfvf_map)
2475 goto free_cntr_bmap;
2476
2477 /* Alloc memory for MCAM entry to counter mapping and for tracking
2478 * counter's reference count.
2479 */
2480 mcam->entry2cntr_map = kcalloc(mcam->total_entries, sizeof(u16),
2481 GFP_KERNEL);
2482 if (!mcam->entry2cntr_map)
2483 goto free_cntr_map;
2484
2485 mcam->cntr_refcnt = kcalloc(mcam->counters.max, sizeof(u16),
2486 GFP_KERNEL);
2487 if (!mcam->cntr_refcnt)
2488 goto free_entry_cntr_map;
2489
2490 /* Alloc memory for saving target device of mcam rule */
2491 mcam->entry2target_pffunc = kcalloc(mcam->total_entries,
2492 sizeof(u16), GFP_KERNEL);
2493 if (!mcam->entry2target_pffunc)
2494 goto free_cntr_refcnt;
2495
2496 for (index = 0; index < mcam->bmap_entries; index++)
2497 mcam->entry2pfvf_map[index] = NPC_MCAM_INVALID_MAP;
2498
2499 for (index = 0; index < mcam->total_entries; index++)
2500 mcam->entry2cntr_map[index] = NPC_MCAM_INVALID_MAP;
2501
2502 for (cntr = 0; cntr < mcam->counters.max; cntr++)
2503 mcam->cntr2pfvf_map[cntr] = NPC_MCAM_INVALID_MAP;
2504
2505 mutex_init(&mcam->lock);
2506
2507 return 0;
2508
2509 free_cntr_refcnt:
2510 kfree(mcam->cntr_refcnt);
2511 free_entry_cntr_map:
2512 kfree(mcam->entry2cntr_map);
2513 free_cntr_map:
2514 kfree(mcam->cntr2pfvf_map);
2515 free_cntr_bmap:
2516 kfree(mcam->counters.bmap);
2517 free_entry_map:
2518 kfree(mcam->entry2pfvf_map);
2519 free_bmap_reverse:
2520 bitmap_free(mcam->bmap_reverse);
2521 free_bmap:
2522 bitmap_free(mcam->bmap);
2523
2524 return -ENOMEM;
2525 }
2526
rvu_npc_hw_init(struct rvu * rvu,int blkaddr)2527 static void rvu_npc_hw_init(struct rvu *rvu, int blkaddr)
2528 {
2529 struct npc_pkind *pkind = &rvu->hw->pkind;
2530 struct npc_mcam *mcam = &rvu->hw->mcam;
2531 struct rvu_hwinfo *hw = rvu->hw;
2532 u64 npc_const, npc_const1;
2533 u64 npc_const2 = 0;
2534
2535 npc_const = rvu_read64(rvu, blkaddr, NPC_AF_CONST);
2536 npc_const1 = rvu_read64(rvu, blkaddr, NPC_AF_CONST1);
2537 if (npc_const1 & BIT_ULL(63))
2538 npc_const2 = rvu_read64(rvu, blkaddr, NPC_AF_CONST2);
2539
2540 pkind->rsrc.max = NPC_UNRESERVED_PKIND_COUNT;
2541 hw->npc_pkinds = (npc_const1 >> 12) & 0xFFULL;
2542 hw->npc_kpu_entries = npc_const1 & 0xFFFULL;
2543 hw->npc_kpus = (npc_const >> 8) & 0x1FULL;
2544 /* For Cn20k silicon, check if enhanced parser
2545 * is present, then set the NUM_KPMS = NUM_KPUS / 2 and
2546 * number of LDATA extractors per KEX.
2547 */
2548 if (is_cn20k(rvu->pdev)) {
2549 if (!(npc_const1 & BIT_ULL(62))) {
2550 WARN(1, "Enhanced parser is not supported\n");
2551 return;
2552 }
2553 hw->npc_kpms = hw->npc_kpus / 2;
2554 hw->npc_kex_extr = (npc_const1 >> 36) & 0x3FULL;
2555 }
2556
2557 hw->npc_intfs = npc_const & 0xFULL;
2558 hw->npc_counters = (npc_const >> 48) & 0xFFFFULL;
2559
2560 mcam->banks = (npc_const >> 44) & 0xFULL;
2561 mcam->banksize = (npc_const >> 28) & 0xFFFFULL;
2562 hw->npc_stat_ena = BIT_ULL(9);
2563 /* Extended set */
2564 if (npc_const2) {
2565 hw->npc_ext_set = true;
2566 /* 96xx supports only match_stats and npc_counters
2567 * reflected in NPC_AF_CONST reg.
2568 * STAT_SEL and ENA are at [0:8] and 9 bit positions.
2569 * 98xx has both match_stat and ext and npc_counter
2570 * reflected in NPC_AF_CONST2
2571 * STAT_SEL_EXT added at [12:14] bit position.
2572 * cn10k supports only ext and hence npc_counters in
2573 * NPC_AF_CONST is 0 and npc_counters reflected in NPC_AF_CONST2.
2574 * STAT_SEL bitpos incremented from [0:8] to [0:11] and ENA bit moved to 63
2575 */
2576 if (!hw->npc_counters)
2577 hw->npc_stat_ena = BIT_ULL(63);
2578 hw->npc_counters = (npc_const2 >> 16) & 0xFFFFULL;
2579 mcam->banksize = npc_const2 & 0xFFFFULL;
2580 }
2581
2582 mcam->counters.max = hw->npc_counters;
2583 }
2584
rvu_npc_setup_interfaces(struct rvu * rvu,int blkaddr)2585 static void rvu_npc_setup_interfaces(struct rvu *rvu, int blkaddr)
2586 {
2587 const struct npc_mcam_kex_extr *mkex_extr;
2588 struct npc_mcam *mcam = &rvu->hw->mcam;
2589 struct rvu_hwinfo *hw = rvu->hw;
2590 const struct npc_mcam_kex *mkex;
2591 u64 nibble_ena, rx_kex, tx_kex;
2592 u64 *keyx_cfg, reg;
2593 u8 intf;
2594
2595 mkex_extr = rvu->kpu.mcam_kex_prfl.mkex_extr;
2596 mkex = rvu->kpu.mcam_kex_prfl.mkex;
2597
2598 if (is_cn20k(rvu->pdev)) {
2599 keyx_cfg = (u64 *)mkex_extr->keyx_cfg;
2600 } else {
2601 keyx_cfg = (u64 *)mkex->keyx_cfg;
2602 /* Reserve last counter for MCAM RX miss action which is set to
2603 * drop packet. This way we will know how many pkts didn't
2604 * match any MCAM entry.
2605 */
2606 mcam->counters.max--;
2607 mcam->rx_miss_act_cntr = mcam->counters.max;
2608 }
2609
2610 rx_kex = keyx_cfg[NIX_INTF_RX];
2611 tx_kex = keyx_cfg[NIX_INTF_TX];
2612
2613 nibble_ena = FIELD_GET(NPC_PARSE_NIBBLE, rx_kex);
2614
2615 nibble_ena = rvu_npc_get_tx_nibble_cfg(rvu, nibble_ena);
2616 if (nibble_ena) {
2617 tx_kex &= ~NPC_PARSE_NIBBLE;
2618 tx_kex |= FIELD_PREP(NPC_PARSE_NIBBLE, nibble_ena);
2619 keyx_cfg[NIX_INTF_TX] = tx_kex;
2620 }
2621
2622 /* Configure RX interfaces */
2623 for (intf = 0; intf < hw->npc_intfs; intf++) {
2624 if (is_npc_intf_tx(intf))
2625 continue;
2626
2627 /* Set RX MCAM search key size. LA..LE (ltype only) + Channel */
2628 rvu_write64(rvu, blkaddr, NPC_AF_INTFX_KEX_CFG(intf),
2629 rx_kex);
2630
2631 if (is_cn20k(rvu->pdev))
2632 reg = NPC_AF_INTFX_MISS_ACTX(intf, 0);
2633 else
2634 reg = NPC_AF_INTFX_MISS_ACT(intf);
2635
2636 /* If MCAM lookup doesn't result in a match, drop the received
2637 * packet. And map this action to a counter to count dropped
2638 * packets.
2639 */
2640 rvu_write64(rvu, blkaddr, reg, NIX_RX_ACTIONOP_DROP);
2641
2642 if (is_cn20k(rvu->pdev))
2643 continue;
2644
2645 /* NPC_AF_INTFX_MISS_STAT_ACT[14:12] - counter[11:9]
2646 * NPC_AF_INTFX_MISS_STAT_ACT[8:0] - counter[8:0]
2647 */
2648 rvu_write64(rvu, blkaddr,
2649 NPC_AF_INTFX_MISS_STAT_ACT(intf),
2650 ((mcam->rx_miss_act_cntr >> 9) << 12) |
2651 hw->npc_stat_ena | mcam->rx_miss_act_cntr);
2652 }
2653
2654 /* Configure TX interfaces */
2655 for (intf = 0; intf < hw->npc_intfs; intf++) {
2656 if (is_npc_intf_rx(intf))
2657 continue;
2658
2659 /* Extract Ltypes LID_LA to LID_LE */
2660 rvu_write64(rvu, blkaddr, NPC_AF_INTFX_KEX_CFG(intf),
2661 tx_kex);
2662
2663 if (is_cn20k(rvu->pdev))
2664 reg = NPC_AF_INTFX_MISS_ACTX(intf, 0);
2665 else
2666 reg = NPC_AF_INTFX_MISS_ACT(intf);
2667
2668 /* Set TX miss action to UCAST_DEFAULT i.e
2669 * transmit the packet on NIX LF SQ's default channel.
2670 */
2671 rvu_write64(rvu, blkaddr, reg, NIX_TX_ACTIONOP_UCAST_DEFAULT);
2672 }
2673 }
2674
rvu_npc_init(struct rvu * rvu)2675 int rvu_npc_init(struct rvu *rvu)
2676 {
2677 struct npc_kpu_profile_adapter *kpu = &rvu->kpu;
2678 struct npc_pkind *pkind = &rvu->hw->pkind;
2679 struct npc_mcam *mcam = &rvu->hw->mcam;
2680 int blkaddr, entry, bank, err;
2681
2682 blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
2683 if (blkaddr < 0) {
2684 dev_err(rvu->dev, "%s: NPC block not implemented\n", __func__);
2685 return -ENODEV;
2686 }
2687
2688 rvu_npc_hw_init(rvu, blkaddr);
2689
2690 /* First disable all MCAM entries, to stop traffic towards NIXLFs */
2691 for (bank = 0; bank < mcam->banks; bank++) {
2692 for (entry = 0; entry < mcam->banksize; entry++)
2693 rvu_write64(rvu, blkaddr,
2694 NPC_AF_MCAMEX_BANKX_CFG(entry, bank), 0);
2695 }
2696
2697 err = rvu_alloc_bitmap(&pkind->rsrc);
2698 if (err)
2699 return err;
2700 /* Reserve PKIND#0 for LBKs. Power reset value of LBK_CH_PKIND is '0',
2701 * no need to configure PKIND for all LBKs separately.
2702 */
2703 rvu_alloc_rsrc(&pkind->rsrc);
2704
2705 /* Allocate mem for pkind to PF and channel mapping info */
2706 pkind->pfchan_map = devm_kcalloc(rvu->dev, pkind->rsrc.max,
2707 sizeof(u32), GFP_KERNEL);
2708 if (!pkind->pfchan_map)
2709 return -ENOMEM;
2710
2711 /* Configure KPU profile */
2712 if (is_cn20k(rvu->pdev))
2713 npc_cn20k_parser_profile_init(rvu, blkaddr);
2714 else
2715 npc_parser_profile_init(rvu, blkaddr);
2716
2717 /* Config Outer L2, IPv4's NPC layer info */
2718 rvu_write64(rvu, blkaddr, NPC_AF_PCK_DEF_OL2,
2719 (kpu->lt_def->pck_ol2.lid << 8) | (kpu->lt_def->pck_ol2.ltype_match << 4) |
2720 kpu->lt_def->pck_ol2.ltype_mask);
2721 rvu_write64(rvu, blkaddr, NPC_AF_PCK_DEF_OIP4,
2722 (kpu->lt_def->pck_oip4.lid << 8) | (kpu->lt_def->pck_oip4.ltype_match << 4) |
2723 kpu->lt_def->pck_oip4.ltype_mask);
2724
2725 /* Config Inner IPV4 NPC layer info */
2726 rvu_write64(rvu, blkaddr, NPC_AF_PCK_DEF_IIP4,
2727 (kpu->lt_def->pck_iip4.lid << 8) | (kpu->lt_def->pck_iip4.ltype_match << 4) |
2728 kpu->lt_def->pck_iip4.ltype_mask);
2729
2730 /* Enable below for Rx pkts.
2731 * - Outer IPv4 header checksum validation.
2732 * - Detect outer L2 broadcast address and set NPC_RESULT_S[L2B].
2733 * - Detect outer L2 multicast address and set NPC_RESULT_S[L2M].
2734 * - Inner IPv4 header checksum validation.
2735 * - Set non zero checksum error code value
2736 */
2737 rvu_write64(rvu, blkaddr, NPC_AF_PCK_CFG,
2738 rvu_read64(rvu, blkaddr, NPC_AF_PCK_CFG) |
2739 ((u64)NPC_EC_OIP4_CSUM << 32) | (NPC_EC_IIP4_CSUM << 24) |
2740 BIT_ULL(7) | BIT_ULL(6) | BIT_ULL(2) | BIT_ULL(1));
2741
2742 rvu_npc_setup_interfaces(rvu, blkaddr);
2743
2744 npc_config_secret_key(rvu, blkaddr);
2745 /* Configure MKEX profile */
2746 if (is_cn20k(rvu->pdev))
2747 npc_cn20k_load_mkex_profile(rvu, blkaddr, rvu->mkex_pfl_name);
2748 else
2749 npc_load_mkex_profile(rvu, blkaddr, rvu->mkex_pfl_name);
2750
2751 err = npc_mcam_rsrcs_init(rvu, blkaddr);
2752 if (err)
2753 return err;
2754
2755 err = npc_flow_steering_init(rvu, blkaddr);
2756 if (err) {
2757 dev_err(rvu->dev,
2758 "Incorrect mkex profile loaded using default mkex\n");
2759 if (is_cn20k(rvu->pdev))
2760 npc_cn20k_load_mkex_profile(rvu, blkaddr, def_pfl_name);
2761 else
2762 npc_load_mkex_profile(rvu, blkaddr, def_pfl_name);
2763 }
2764
2765 if (is_cn20k(rvu->pdev))
2766 return npc_cn20k_init(rvu);
2767
2768 return 0;
2769 }
2770
rvu_npc_freemem(struct rvu * rvu)2771 void rvu_npc_freemem(struct rvu *rvu)
2772 {
2773 struct npc_pkind *pkind = &rvu->hw->pkind;
2774 struct npc_mcam *mcam = &rvu->hw->mcam;
2775
2776 kfree(pkind->rsrc.bmap);
2777 npc_mcam_rsrcs_deinit(rvu);
2778 if (rvu->kpu_prfl_addr)
2779 iounmap(rvu->kpu_prfl_addr);
2780 else
2781 kfree(rvu->kpu_fwdata);
2782 mutex_destroy(&mcam->lock);
2783
2784 if (is_cn20k(rvu->pdev))
2785 npc_cn20k_deinit(rvu);
2786 }
2787
rvu_npc_get_mcam_entry_alloc_info(struct rvu * rvu,u16 pcifunc,int blkaddr,int * alloc_cnt,int * enable_cnt)2788 void rvu_npc_get_mcam_entry_alloc_info(struct rvu *rvu, u16 pcifunc,
2789 int blkaddr, int *alloc_cnt,
2790 int *enable_cnt)
2791 {
2792 struct npc_mcam *mcam = &rvu->hw->mcam;
2793 int entry;
2794
2795 *alloc_cnt = 0;
2796 *enable_cnt = 0;
2797
2798 for (entry = 0; entry < mcam->bmap_entries; entry++) {
2799 if (mcam->entry2pfvf_map[entry] == pcifunc) {
2800 (*alloc_cnt)++;
2801 if (is_mcam_entry_enabled(rvu, mcam, blkaddr, entry))
2802 (*enable_cnt)++;
2803 }
2804 }
2805 }
2806
rvu_npc_get_mcam_counter_alloc_info(struct rvu * rvu,u16 pcifunc,int blkaddr,int * alloc_cnt,int * enable_cnt)2807 void rvu_npc_get_mcam_counter_alloc_info(struct rvu *rvu, u16 pcifunc,
2808 int blkaddr, int *alloc_cnt,
2809 int *enable_cnt)
2810 {
2811 struct npc_mcam *mcam = &rvu->hw->mcam;
2812 int cntr;
2813
2814 *alloc_cnt = 0;
2815 *enable_cnt = 0;
2816
2817 for (cntr = 0; cntr < mcam->counters.max; cntr++) {
2818 if (mcam->cntr2pfvf_map[cntr] == pcifunc) {
2819 (*alloc_cnt)++;
2820 if (mcam->cntr_refcnt[cntr])
2821 (*enable_cnt)++;
2822 }
2823 }
2824 }
2825
npc_mcam_verify_entry(struct npc_mcam * mcam,u16 pcifunc,int entry)2826 int npc_mcam_verify_entry(struct npc_mcam *mcam,
2827 u16 pcifunc, int entry)
2828 {
2829 /* verify AF installed entries */
2830 if (is_pffunc_af(pcifunc))
2831 return 0;
2832 /* Verify if entry is valid and if it is indeed
2833 * allocated to the requesting PFFUNC.
2834 */
2835 if (entry >= mcam->bmap_entries)
2836 return NPC_MCAM_INVALID_REQ;
2837
2838 if (pcifunc != mcam->entry2pfvf_map[entry])
2839 return NPC_MCAM_PERM_DENIED;
2840
2841 return 0;
2842 }
2843
npc_mcam_verify_counter(struct npc_mcam * mcam,u16 pcifunc,int cntr)2844 static int npc_mcam_verify_counter(struct npc_mcam *mcam,
2845 u16 pcifunc, int cntr)
2846 {
2847 /* Verify if counter is valid and if it is indeed
2848 * allocated to the requesting PFFUNC.
2849 */
2850 if (cntr >= mcam->counters.max)
2851 return NPC_MCAM_INVALID_REQ;
2852
2853 if (pcifunc != mcam->cntr2pfvf_map[cntr])
2854 return NPC_MCAM_PERM_DENIED;
2855
2856 return 0;
2857 }
2858
npc_map_mcam_entry_and_cntr(struct rvu * rvu,struct npc_mcam * mcam,int blkaddr,u16 entry,u16 cntr)2859 static void npc_map_mcam_entry_and_cntr(struct rvu *rvu, struct npc_mcam *mcam,
2860 int blkaddr, u16 entry, u16 cntr)
2861 {
2862 u16 index = entry & (mcam->banksize - 1);
2863 u32 bank = npc_get_bank(mcam, entry);
2864 struct rvu_hwinfo *hw = rvu->hw;
2865
2866 /* Set mapping and increment counter's refcnt */
2867 mcam->entry2cntr_map[entry] = cntr;
2868 mcam->cntr_refcnt[cntr]++;
2869
2870 if (is_cn20k(rvu->pdev))
2871 return;
2872
2873 /* Enable stats */
2874 rvu_write64(rvu, blkaddr,
2875 NPC_AF_MCAMEX_BANKX_STAT_ACT(index, bank),
2876 ((cntr >> 9) << 12) | hw->npc_stat_ena | cntr);
2877 }
2878
npc_unmap_mcam_entry_and_cntr(struct rvu * rvu,struct npc_mcam * mcam,int blkaddr,u16 entry,u16 cntr)2879 static void npc_unmap_mcam_entry_and_cntr(struct rvu *rvu,
2880 struct npc_mcam *mcam,
2881 int blkaddr, u16 entry, u16 cntr)
2882 {
2883 u16 index = entry & (mcam->banksize - 1);
2884 u32 bank = npc_get_bank(mcam, entry);
2885
2886 /* Remove mapping and reduce counter's refcnt */
2887 mcam->entry2cntr_map[entry] = NPC_MCAM_INVALID_MAP;
2888 mcam->cntr_refcnt[cntr]--;
2889
2890 if (is_cn20k(rvu->pdev))
2891 return;
2892
2893 /* Disable stats */
2894 rvu_write64(rvu, blkaddr,
2895 NPC_AF_MCAMEX_BANKX_STAT_ACT(index, bank), 0x00);
2896 }
2897
2898 /* Sets MCAM entry in bitmap as used. Update
2899 * reverse bitmap too. Should be called with
2900 * 'mcam->lock' held.
2901 */
npc_mcam_set_bit(struct npc_mcam * mcam,u16 index)2902 void npc_mcam_set_bit(struct npc_mcam *mcam, u16 index)
2903 {
2904 u16 entry, rentry;
2905
2906 entry = index;
2907 rentry = mcam->bmap_entries - index - 1;
2908
2909 __set_bit(entry, mcam->bmap);
2910 __set_bit(rentry, mcam->bmap_reverse);
2911 mcam->bmap_fcnt--;
2912 }
2913
2914 /* Sets MCAM entry in bitmap as free. Update
2915 * reverse bitmap too. Should be called with
2916 * 'mcam->lock' held.
2917 */
npc_mcam_clear_bit(struct npc_mcam * mcam,u16 index)2918 void npc_mcam_clear_bit(struct npc_mcam *mcam, u16 index)
2919 {
2920 u16 entry, rentry;
2921
2922 entry = index;
2923 rentry = mcam->bmap_entries - index - 1;
2924
2925 __clear_bit(entry, mcam->bmap);
2926 __clear_bit(rentry, mcam->bmap_reverse);
2927 mcam->bmap_fcnt++;
2928 }
2929
npc_mcam_free_all_entries(struct rvu * rvu,struct npc_mcam * mcam,int blkaddr,u16 pcifunc)2930 static void npc_mcam_free_all_entries(struct rvu *rvu, struct npc_mcam *mcam,
2931 int blkaddr, u16 pcifunc)
2932 {
2933 u16 dft_idxs[NPC_DFT_RULE_MAX_ID] = {[0 ... NPC_DFT_RULE_MAX_ID - 1] = USHRT_MAX};
2934 bool cn20k_dft_rl;
2935 u16 index, cntr;
2936 int rc;
2937
2938 npc_cn20k_dft_rules_idx_get(rvu, pcifunc,
2939 &dft_idxs[NPC_DFT_RULE_BCAST_ID],
2940 &dft_idxs[NPC_DFT_RULE_MCAST_ID],
2941 &dft_idxs[NPC_DFT_RULE_PROMISC_ID],
2942 &dft_idxs[NPC_DFT_RULE_UCAST_ID]);
2943
2944 /* Scan all MCAM entries and free the ones mapped to 'pcifunc' */
2945 for (index = 0; index < mcam->bmap_entries; index++) {
2946 if (mcam->entry2pfvf_map[index] != pcifunc)
2947 continue;
2948
2949 cn20k_dft_rl = false;
2950
2951 if (is_cn20k(rvu->pdev)) {
2952 if (dft_idxs[NPC_DFT_RULE_BCAST_ID] == index ||
2953 dft_idxs[NPC_DFT_RULE_MCAST_ID] == index ||
2954 dft_idxs[NPC_DFT_RULE_PROMISC_ID] == index ||
2955 dft_idxs[NPC_DFT_RULE_UCAST_ID] == index) {
2956 cn20k_dft_rl = true;
2957 }
2958 }
2959
2960 if (!cn20k_dft_rl) {
2961 /* Disable the entry */
2962 npc_enable_mcam_entry(rvu, mcam, blkaddr, index, false);
2963 mcam->entry2pfvf_map[index] = NPC_MCAM_INVALID_MAP;
2964 /* Free the entry in bitmap */
2965 npc_mcam_clear_bit(mcam, index);
2966 mcam->entry2target_pffunc[index] = 0x0;
2967 }
2968
2969 /* Update entry2counter mapping */
2970 cntr = mcam->entry2cntr_map[index];
2971 if (cntr != NPC_MCAM_INVALID_MAP)
2972 npc_unmap_mcam_entry_and_cntr(rvu, mcam,
2973 blkaddr, index,
2974 cntr);
2975
2976 if (!is_cn20k(rvu->pdev) || cn20k_dft_rl)
2977 continue;
2978
2979 rc = npc_cn20k_idx_free(rvu, &index, 1);
2980 if (rc)
2981 dev_err(rvu->dev,
2982 "Failed to free mcam idx=%u pcifunc=%#x\n",
2983 index, pcifunc);
2984 }
2985 }
2986
npc_mcam_free_all_counters(struct rvu * rvu,struct npc_mcam * mcam,u16 pcifunc)2987 static void npc_mcam_free_all_counters(struct rvu *rvu, struct npc_mcam *mcam,
2988 u16 pcifunc)
2989 {
2990 u16 cntr;
2991
2992 /* Scan all MCAM counters and free the ones mapped to 'pcifunc' */
2993 for (cntr = 0; cntr < mcam->counters.max; cntr++) {
2994 if (mcam->cntr2pfvf_map[cntr] == pcifunc) {
2995 mcam->cntr2pfvf_map[cntr] = NPC_MCAM_INVALID_MAP;
2996 mcam->cntr_refcnt[cntr] = 0;
2997 rvu_free_rsrc(&mcam->counters, cntr);
2998 /* This API is expected to be called after freeing
2999 * MCAM entries, which inturn will remove
3000 * 'entry to counter' mapping.
3001 * No need to do it again.
3002 */
3003 }
3004 }
3005 }
3006
3007 /* Find area of contiguous free entries of size 'nr'.
3008 * If not found return max contiguous free entries available.
3009 */
npc_mcam_find_zero_area(unsigned long * map,u16 size,u16 start,u16 nr,u16 * max_area)3010 static u16 npc_mcam_find_zero_area(unsigned long *map, u16 size, u16 start,
3011 u16 nr, u16 *max_area)
3012 {
3013 u16 max_area_start = 0;
3014 u16 index, next, end;
3015
3016 *max_area = 0;
3017
3018 again:
3019 index = find_next_zero_bit(map, size, start);
3020 if (index >= size)
3021 return max_area_start;
3022
3023 end = ((index + nr) >= size) ? size : index + nr;
3024 next = find_next_bit(map, end, index);
3025 if (*max_area < (next - index)) {
3026 *max_area = next - index;
3027 max_area_start = index;
3028 }
3029
3030 if (next < end) {
3031 start = next + 1;
3032 goto again;
3033 }
3034
3035 return max_area_start;
3036 }
3037
3038 /* Find number of free MCAM entries available
3039 * within range i.e in between 'start' and 'end'.
3040 */
npc_mcam_get_free_count(unsigned long * map,u16 start,u16 end)3041 static u16 npc_mcam_get_free_count(unsigned long *map, u16 start, u16 end)
3042 {
3043 u16 index, next;
3044 u16 fcnt = 0;
3045
3046 again:
3047 if (start >= end)
3048 return fcnt;
3049
3050 index = find_next_zero_bit(map, end, start);
3051 if (index >= end)
3052 return fcnt;
3053
3054 next = find_next_bit(map, end, index);
3055 if (next <= end) {
3056 fcnt += next - index;
3057 start = next + 1;
3058 goto again;
3059 }
3060
3061 fcnt += end - index;
3062 return fcnt;
3063 }
3064
3065 static void
npc_get_mcam_search_range_priority(struct npc_mcam * mcam,struct npc_mcam_alloc_entry_req * req,u16 * start,u16 * end,bool * reverse)3066 npc_get_mcam_search_range_priority(struct npc_mcam *mcam,
3067 struct npc_mcam_alloc_entry_req *req,
3068 u16 *start, u16 *end, bool *reverse)
3069 {
3070 u16 fcnt;
3071
3072 if (req->ref_prio == NPC_MCAM_HIGHER_PRIO)
3073 goto hprio;
3074
3075 /* For a low priority entry allocation
3076 * - If reference entry is not in hprio zone then
3077 * search range: ref_entry to end.
3078 * - If reference entry is in hprio zone and if
3079 * request can be accomodated in non-hprio zone then
3080 * search range: 'start of middle zone' to 'end'
3081 * - else search in reverse, so that less number of hprio
3082 * zone entries are allocated.
3083 */
3084
3085 *reverse = false;
3086 *start = req->ref_entry + 1;
3087 *end = mcam->bmap_entries;
3088
3089 if (req->ref_entry >= mcam->hprio_end)
3090 return;
3091
3092 fcnt = npc_mcam_get_free_count(mcam->bmap,
3093 mcam->hprio_end, mcam->bmap_entries);
3094 if (fcnt > req->count)
3095 *start = mcam->hprio_end;
3096 else
3097 *reverse = true;
3098 return;
3099
3100 hprio:
3101 /* For a high priority entry allocation, search is always
3102 * in reverse to preserve hprio zone entries.
3103 * - If reference entry is not in lprio zone then
3104 * search range: 0 to ref_entry.
3105 * - If reference entry is in lprio zone and if
3106 * request can be accomodated in middle zone then
3107 * search range: 'hprio_end' to 'lprio_start'
3108 */
3109
3110 *reverse = true;
3111 *start = 0;
3112 *end = req->ref_entry;
3113
3114 if (req->ref_entry <= mcam->lprio_start)
3115 return;
3116
3117 fcnt = npc_mcam_get_free_count(mcam->bmap,
3118 mcam->hprio_end, mcam->lprio_start);
3119 if (fcnt < req->count)
3120 return;
3121 *start = mcam->hprio_end;
3122 *end = mcam->lprio_start;
3123 }
3124
npc_mcam_alloc_entries(struct npc_mcam * mcam,u16 pcifunc,struct npc_mcam_alloc_entry_req * req,struct npc_mcam_alloc_entry_rsp * rsp)3125 static int npc_mcam_alloc_entries(struct npc_mcam *mcam, u16 pcifunc,
3126 struct npc_mcam_alloc_entry_req *req,
3127 struct npc_mcam_alloc_entry_rsp *rsp)
3128 {
3129 struct rvu_hwinfo *hw = container_of(mcam, struct rvu_hwinfo, mcam);
3130 u16 entry_list[NPC_MAX_NONCONTIG_ENTRIES];
3131 u16 fcnt, hp_fcnt, lp_fcnt;
3132 struct rvu *rvu = hw->rvu;
3133 u16 start, end, index;
3134 int entry, next_start;
3135 bool reverse = false;
3136 unsigned long *bmap;
3137 int ret, limit = 0;
3138 u16 max_contig;
3139
3140 if (!is_cn20k(rvu->pdev))
3141 goto not_cn20k;
3142
3143 /* Only x2 or x4 key types are accepted */
3144 if (req->kw_type != NPC_MCAM_KEY_X2 && req->kw_type != NPC_MCAM_KEY_X4)
3145 return NPC_MCAM_INVALID_REQ;
3146
3147 /* The below table is being followed during allocation,
3148 *
3149 * 1. ref_entry == 0 && prio == HIGH && count == 1 : user wants to
3150 * allocate 0th index
3151 * 2. ref_entry == 0 && prio == HIGH && count > 1 : Invalid request
3152 * 3. ref_entry == 0 && prio == LOW && count >= 1 : limit = 0
3153 * 4. ref_entry != 0 && prio == HIGH && count >= 1 : limit = 0
3154 * 5. ref_entry != 0 && prio == LOW && count >=1 : limit = Max
3155 * (X2 2*8192, X4 8192)
3156 */
3157 if (req->ref_entry && req->ref_prio == NPC_MCAM_LOWER_PRIO) {
3158 if (req->kw_type == NPC_MCAM_KEY_X2)
3159 limit = 2 * mcam->bmap_entries;
3160 else
3161 limit = mcam->bmap_entries;
3162 }
3163
3164 ret = npc_cn20k_ref_idx_alloc(rvu, pcifunc, req->kw_type,
3165 req->ref_prio, rsp->entry_list,
3166 req->ref_entry, limit,
3167 req->contig, req->count, !!req->virt);
3168
3169 if (ret) {
3170 rsp->count = 0;
3171 return NPC_MCAM_ALLOC_FAILED;
3172 }
3173
3174 rsp->count = req->count;
3175 if (req->contig)
3176 rsp->entry = rsp->entry_list[0];
3177
3178 /* cn20k, entries allocation algorithm is different.
3179 * This common API updates some bitmap on usage etc, which
3180 * will be used by other functions. So update those for
3181 * cn20k as well.
3182 */
3183
3184 mutex_lock(&mcam->lock);
3185 /* Mark the allocated entries as used and set nixlf mapping */
3186 for (entry = 0; entry < rsp->count; entry++) {
3187 index = npc_cn20k_vidx2idx(rsp->entry_list[entry]);
3188 npc_mcam_set_bit(mcam, index);
3189 mcam->entry2pfvf_map[index] = pcifunc;
3190 mcam->entry2cntr_map[index] = NPC_MCAM_INVALID_MAP;
3191 }
3192
3193 /* cn20k, free count is provided thru different mbox message.
3194 * one counter to indicate free x2 slots and free x4 slots
3195 * does not provide any useful information to the user.
3196 */
3197 rsp->free_count = -1;
3198 mutex_unlock(&mcam->lock);
3199
3200 return 0;
3201
3202 not_cn20k:
3203 mutex_lock(&mcam->lock);
3204
3205 /* Check if there are any free entries */
3206 if (!mcam->bmap_fcnt) {
3207 mutex_unlock(&mcam->lock);
3208 return NPC_MCAM_ALLOC_FAILED;
3209 }
3210
3211 /* MCAM entries are divided into high priority, middle and
3212 * low priority zones. Idea is to not allocate top and lower
3213 * most entries as much as possible, this is to increase
3214 * probability of honouring priority allocation requests.
3215 *
3216 * Two bitmaps are used for mcam entry management,
3217 * mcam->bmap for forward search i.e '0 to mcam->bmap_entries'.
3218 * mcam->bmap_reverse for reverse search i.e 'mcam->bmap_entries to 0'.
3219 *
3220 * Reverse bitmap is used to allocate entries
3221 * - when a higher priority entry is requested
3222 * - when available free entries are less.
3223 * Lower priority ones out of avaialble free entries are always
3224 * chosen when 'high vs low' question arises.
3225 *
3226 * For a VF base MCAM match rule is set by its PF. And all the
3227 * further MCAM rules installed by VF on its own are
3228 * concatenated with the base rule set by its PF. Hence PF entries
3229 * should be at lower priority compared to VF entries. Otherwise
3230 * base rule is hit always and rules installed by VF will be of
3231 * no use. Hence if the request is from PF then allocate low
3232 * priority entries.
3233 */
3234 if (!(pcifunc & RVU_PFVF_FUNC_MASK))
3235 goto lprio_alloc;
3236
3237 /* Get the search range for priority allocation request */
3238 if (req->ref_prio) {
3239 npc_get_mcam_search_range_priority(mcam, req,
3240 &start, &end, &reverse);
3241 goto alloc;
3242 }
3243
3244 /* Find out the search range for non-priority allocation request
3245 *
3246 * Get MCAM free entry count in middle zone.
3247 */
3248 lp_fcnt = npc_mcam_get_free_count(mcam->bmap,
3249 mcam->lprio_start,
3250 mcam->bmap_entries);
3251 hp_fcnt = npc_mcam_get_free_count(mcam->bmap, 0, mcam->hprio_end);
3252 fcnt = mcam->bmap_fcnt - lp_fcnt - hp_fcnt;
3253
3254 /* Check if request can be accomodated in the middle zone */
3255 if (fcnt > req->count) {
3256 start = mcam->hprio_end;
3257 end = mcam->lprio_start;
3258 } else if ((fcnt + (hp_fcnt / 2) + (lp_fcnt / 2)) > req->count) {
3259 /* Expand search zone from half of hprio zone to
3260 * half of lprio zone.
3261 */
3262 start = mcam->hprio_end / 2;
3263 end = mcam->bmap_entries - (mcam->lprio_count / 2);
3264 reverse = true;
3265 } else {
3266 /* Not enough free entries, search all entries in reverse,
3267 * so that low priority ones will get used up.
3268 */
3269 lprio_alloc:
3270 reverse = true;
3271 start = 0;
3272 end = mcam->bmap_entries;
3273 /* Ensure PF requests are always at bottom and if PF requests
3274 * for higher/lower priority entry wrt reference entry then
3275 * honour that criteria and start search for entries from bottom
3276 * and not in mid zone.
3277 */
3278 if (!(pcifunc & RVU_PFVF_FUNC_MASK) &&
3279 req->ref_prio == NPC_MCAM_HIGHER_PRIO)
3280 end = req->ref_entry;
3281
3282 if (!(pcifunc & RVU_PFVF_FUNC_MASK) &&
3283 req->ref_prio == NPC_MCAM_LOWER_PRIO)
3284 start = req->ref_entry;
3285 }
3286
3287 alloc:
3288 if (reverse) {
3289 bmap = mcam->bmap_reverse;
3290 start = mcam->bmap_entries - start;
3291 end = mcam->bmap_entries - end;
3292 swap(start, end);
3293 } else {
3294 bmap = mcam->bmap;
3295 }
3296
3297 if (req->contig) {
3298 /* Allocate requested number of contiguous entries, if
3299 * unsuccessful find max contiguous entries available.
3300 */
3301 index = npc_mcam_find_zero_area(bmap, end, start,
3302 req->count, &max_contig);
3303 rsp->count = max_contig;
3304 if (reverse)
3305 rsp->entry = mcam->bmap_entries - index - max_contig;
3306 else
3307 rsp->entry = index;
3308 } else {
3309 /* Allocate requested number of non-contiguous entries,
3310 * if unsuccessful allocate as many as possible.
3311 */
3312 rsp->count = 0;
3313 next_start = start;
3314 for (entry = 0; entry < req->count; entry++) {
3315 index = find_next_zero_bit(bmap, end, next_start);
3316 if (index >= end)
3317 break;
3318
3319 next_start = start + (index - start) + 1;
3320
3321 /* Save the entry's index */
3322 if (reverse)
3323 index = mcam->bmap_entries - index - 1;
3324 entry_list[entry] = index;
3325 rsp->count++;
3326 }
3327 }
3328
3329 /* If allocating requested no of entries is unsucessful,
3330 * expand the search range to full bitmap length and retry.
3331 */
3332 if (!req->ref_prio && rsp->count < req->count &&
3333 ((end - start) != mcam->bmap_entries)) {
3334 reverse = true;
3335 start = 0;
3336 end = mcam->bmap_entries;
3337 goto alloc;
3338 }
3339
3340 /* For priority entry allocation requests, if allocation is
3341 * failed then expand search to max possible range and retry.
3342 */
3343 if (req->ref_prio && rsp->count < req->count) {
3344 if (req->ref_prio == NPC_MCAM_LOWER_PRIO &&
3345 (start != (req->ref_entry + 1))) {
3346 start = req->ref_entry + 1;
3347 end = mcam->bmap_entries;
3348 reverse = false;
3349 goto alloc;
3350 } else if ((req->ref_prio == NPC_MCAM_HIGHER_PRIO) &&
3351 ((end - start) != req->ref_entry)) {
3352 start = 0;
3353 end = req->ref_entry;
3354 reverse = true;
3355 goto alloc;
3356 }
3357 }
3358
3359 /* Copy MCAM entry indices into mbox response entry_list.
3360 * Requester always expects indices in ascending order, so
3361 * reverse the list if reverse bitmap is used for allocation.
3362 */
3363 if (!req->contig && rsp->count) {
3364 index = 0;
3365 for (entry = rsp->count - 1; entry >= 0; entry--) {
3366 if (reverse)
3367 rsp->entry_list[index++] = entry_list[entry];
3368 else
3369 rsp->entry_list[entry] = entry_list[entry];
3370 }
3371 }
3372
3373 /* Mark the allocated entries as used and set nixlf mapping */
3374 for (entry = 0; entry < rsp->count; entry++) {
3375 index = req->contig ?
3376 (rsp->entry + entry) : rsp->entry_list[entry];
3377 npc_mcam_set_bit(mcam, index);
3378 mcam->entry2pfvf_map[index] = pcifunc;
3379 mcam->entry2cntr_map[index] = NPC_MCAM_INVALID_MAP;
3380 }
3381
3382 /* Update available free count in mbox response */
3383 rsp->free_count = mcam->bmap_fcnt;
3384
3385 mutex_unlock(&mcam->lock);
3386 return 0;
3387 }
3388
3389 /* Marks bitmaps to reserved the mcam slot */
npc_mcam_rsrcs_reserve(struct rvu * rvu,int blkaddr,int entry_idx)3390 void npc_mcam_rsrcs_reserve(struct rvu *rvu, int blkaddr, int entry_idx)
3391 {
3392 struct npc_mcam *mcam = &rvu->hw->mcam;
3393
3394 npc_mcam_set_bit(mcam, entry_idx);
3395 }
3396
npc_config_cntr_default_entries(struct rvu * rvu,bool enable)3397 int npc_config_cntr_default_entries(struct rvu *rvu, bool enable)
3398 {
3399 struct npc_mcam *mcam = &rvu->hw->mcam;
3400 struct npc_install_flow_rsp rsp;
3401 struct rvu_npc_mcam_rule *rule;
3402 int blkaddr;
3403
3404 /* Counter is set for each rule by default */
3405 if (is_cn20k(rvu->pdev))
3406 return -EINVAL;
3407
3408 blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
3409 if (blkaddr < 0)
3410 return -EINVAL;
3411
3412 mutex_lock(&mcam->lock);
3413 list_for_each_entry(rule, &mcam->mcam_rules, list) {
3414 if (!is_mcam_entry_enabled(rvu, mcam, blkaddr, rule->entry))
3415 continue;
3416 if (!rule->default_rule)
3417 continue;
3418 if (enable && !rule->has_cntr) { /* Alloc and map new counter */
3419 __rvu_mcam_add_counter_to_rule(rvu, rule->owner,
3420 rule, &rsp);
3421 if (rsp.counter < 0) {
3422 dev_err(rvu->dev,
3423 "%s: Failed to allocate cntr for default rule (err=%d)\n",
3424 __func__, rsp.counter);
3425 break;
3426 }
3427 npc_map_mcam_entry_and_cntr(rvu, mcam, blkaddr,
3428 rule->entry, rsp.counter);
3429 /* Reset counter before use */
3430 rvu_write64(rvu, blkaddr,
3431 NPC_AF_MATCH_STATX(rule->cntr), 0x0);
3432 }
3433
3434 /* Free and unmap counter */
3435 if (!enable && rule->has_cntr)
3436 __rvu_mcam_remove_counter_from_rule(rvu, rule->owner,
3437 rule);
3438 }
3439 mutex_unlock(&mcam->lock);
3440
3441 return 0;
3442 }
3443
rvu_mbox_handler_npc_mcam_alloc_entry(struct rvu * rvu,struct npc_mcam_alloc_entry_req * req,struct npc_mcam_alloc_entry_rsp * rsp)3444 int rvu_mbox_handler_npc_mcam_alloc_entry(struct rvu *rvu,
3445 struct npc_mcam_alloc_entry_req *req,
3446 struct npc_mcam_alloc_entry_rsp *rsp)
3447 {
3448 struct npc_mcam *mcam = &rvu->hw->mcam;
3449 u16 pcifunc = req->hdr.pcifunc;
3450 int blkaddr;
3451
3452 blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
3453 if (blkaddr < 0)
3454 return NPC_MCAM_INVALID_REQ;
3455
3456 rsp->entry = NPC_MCAM_ENTRY_INVALID;
3457 rsp->free_count = 0;
3458
3459 /* Check if ref_entry is greater that the range
3460 * then set it to max value.
3461 */
3462 if (req->ref_entry > mcam->bmap_entries)
3463 req->ref_entry = mcam->bmap_entries;
3464
3465 /* ref_entry can't be '0' if requested priority is high.
3466 * Can't be last entry if requested priority is low.
3467 */
3468 if ((!req->ref_entry && req->ref_prio == NPC_MCAM_HIGHER_PRIO) ||
3469 (req->ref_entry == mcam->bmap_entries &&
3470 req->ref_prio == NPC_MCAM_LOWER_PRIO))
3471 return NPC_MCAM_INVALID_REQ;
3472
3473 /* Since list of allocated indices needs to be sent to requester,
3474 * max number of non-contiguous entries per mbox msg is limited.
3475 */
3476 if (!req->contig && req->count > NPC_MAX_NONCONTIG_ENTRIES) {
3477 dev_err(rvu->dev,
3478 "%s: %d Non-contiguous MCAM entries requested is more than max (%d) allowed\n",
3479 __func__, req->count, NPC_MAX_NONCONTIG_ENTRIES);
3480 return NPC_MCAM_INVALID_REQ;
3481 }
3482
3483 /* Alloc request from PFFUNC with no NIXLF attached should be denied */
3484 if (!is_pffunc_af(pcifunc) && !is_nixlf_attached(rvu, pcifunc))
3485 return NPC_MCAM_ALLOC_DENIED;
3486
3487 return npc_mcam_alloc_entries(mcam, pcifunc, req, rsp);
3488 }
3489
rvu_mbox_handler_npc_mcam_free_entry(struct rvu * rvu,struct npc_mcam_free_entry_req * req,struct msg_rsp * rsp)3490 int rvu_mbox_handler_npc_mcam_free_entry(struct rvu *rvu,
3491 struct npc_mcam_free_entry_req *req,
3492 struct msg_rsp *rsp)
3493 {
3494 struct npc_mcam *mcam = &rvu->hw->mcam;
3495 u16 pcifunc = req->hdr.pcifunc;
3496 int blkaddr, rc = 0;
3497 u16 cntr;
3498
3499 req->entry = npc_cn20k_vidx2idx(req->entry);
3500
3501 blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
3502 if (blkaddr < 0)
3503 return NPC_MCAM_INVALID_REQ;
3504
3505 /* Free request from PFFUNC with no NIXLF attached, ignore */
3506 if (!is_pffunc_af(pcifunc) && !is_nixlf_attached(rvu, pcifunc))
3507 return NPC_MCAM_INVALID_REQ;
3508
3509 mutex_lock(&mcam->lock);
3510
3511 if (req->all)
3512 goto free_all;
3513
3514 rc = npc_mcam_verify_entry(mcam, pcifunc, req->entry);
3515 if (rc)
3516 goto exit;
3517
3518 mcam->entry2pfvf_map[req->entry] = NPC_MCAM_INVALID_MAP;
3519 mcam->entry2target_pffunc[req->entry] = 0x0;
3520 npc_mcam_clear_bit(mcam, req->entry);
3521 npc_enable_mcam_entry(rvu, mcam, blkaddr, req->entry, false);
3522
3523 /* Update entry2counter mapping */
3524 cntr = mcam->entry2cntr_map[req->entry];
3525 if (cntr != NPC_MCAM_INVALID_MAP)
3526 npc_unmap_mcam_entry_and_cntr(rvu, mcam, blkaddr,
3527 req->entry, cntr);
3528
3529 if (is_cn20k(rvu->pdev)) {
3530 rc = npc_cn20k_idx_free(rvu, &req->entry, 1);
3531 if (rc)
3532 dev_err(rvu->dev,
3533 "Failed to free index=%u\n",
3534 req->entry);
3535 }
3536
3537 goto exit;
3538
3539 free_all:
3540 /* Free up all entries allocated to requesting PFFUNC */
3541 npc_mcam_free_all_entries(rvu, mcam, blkaddr, pcifunc);
3542 exit:
3543 mutex_unlock(&mcam->lock);
3544 return rc;
3545 }
3546
rvu_mbox_handler_npc_mcam_read_entry(struct rvu * rvu,struct npc_mcam_read_entry_req * req,struct npc_mcam_read_entry_rsp * rsp)3547 int rvu_mbox_handler_npc_mcam_read_entry(struct rvu *rvu,
3548 struct npc_mcam_read_entry_req *req,
3549 struct npc_mcam_read_entry_rsp *rsp)
3550 {
3551 struct npc_mcam *mcam = &rvu->hw->mcam;
3552 u16 pcifunc = req->hdr.pcifunc;
3553 int blkaddr, rc;
3554
3555 blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
3556 if (blkaddr < 0)
3557 return NPC_MCAM_INVALID_REQ;
3558
3559 mutex_lock(&mcam->lock);
3560 rc = npc_mcam_verify_entry(mcam, pcifunc, req->entry);
3561 if (!rc) {
3562 npc_read_mcam_entry(rvu, mcam, blkaddr, req->entry,
3563 &rsp->entry_data,
3564 &rsp->intf, &rsp->enable);
3565 }
3566
3567 mutex_unlock(&mcam->lock);
3568 return rc;
3569 }
3570
rvu_mbox_handler_npc_mcam_write_entry(struct rvu * rvu,struct npc_mcam_write_entry_req * req,struct msg_rsp * rsp)3571 int rvu_mbox_handler_npc_mcam_write_entry(struct rvu *rvu,
3572 struct npc_mcam_write_entry_req *req,
3573 struct msg_rsp *rsp)
3574 {
3575 struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, req->hdr.pcifunc);
3576 struct npc_mcam *mcam = &rvu->hw->mcam;
3577 u16 pcifunc = req->hdr.pcifunc;
3578 int blkaddr, rc;
3579 u8 nix_intf;
3580
3581 blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
3582 if (blkaddr < 0)
3583 return NPC_MCAM_INVALID_REQ;
3584
3585 mutex_lock(&mcam->lock);
3586 rc = npc_mcam_verify_entry(mcam, pcifunc, req->entry);
3587 if (rc)
3588 goto exit;
3589
3590 if (!is_cn20k(rvu->pdev)) {
3591 /* Verify counter in SoCs other than cn20k */
3592 if (req->set_cntr &&
3593 npc_mcam_verify_counter(mcam, pcifunc, req->cntr)) {
3594 rc = NPC_MCAM_INVALID_REQ;
3595 goto exit;
3596 }
3597 }
3598
3599 if (!is_npc_interface_valid(rvu, req->intf)) {
3600 rc = NPC_MCAM_INVALID_REQ;
3601 goto exit;
3602 }
3603
3604 if (is_npc_intf_tx(req->intf))
3605 nix_intf = pfvf->nix_tx_intf;
3606 else
3607 nix_intf = pfvf->nix_rx_intf;
3608
3609 /* For AF installed rules, the nix_intf should be set to target NIX */
3610 if (is_pffunc_af(req->hdr.pcifunc))
3611 nix_intf = req->intf;
3612
3613 npc_config_mcam_entry(rvu, mcam, blkaddr, req->entry, nix_intf,
3614 &req->entry_data, req->enable_entry);
3615
3616 if (req->set_cntr)
3617 npc_map_mcam_entry_and_cntr(rvu, mcam, blkaddr,
3618 req->entry, req->cntr);
3619
3620 rc = 0;
3621 exit:
3622 mutex_unlock(&mcam->lock);
3623 return rc;
3624 }
3625
rvu_mbox_handler_npc_mcam_ena_entry(struct rvu * rvu,struct npc_mcam_ena_dis_entry_req * req,struct msg_rsp * rsp)3626 int rvu_mbox_handler_npc_mcam_ena_entry(struct rvu *rvu,
3627 struct npc_mcam_ena_dis_entry_req *req,
3628 struct msg_rsp *rsp)
3629 {
3630 struct npc_mcam *mcam = &rvu->hw->mcam;
3631 u16 pcifunc = req->hdr.pcifunc;
3632 int blkaddr, rc;
3633
3634 req->entry = npc_cn20k_vidx2idx(req->entry);
3635
3636 blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
3637 if (blkaddr < 0)
3638 return NPC_MCAM_INVALID_REQ;
3639
3640 mutex_lock(&mcam->lock);
3641 rc = npc_mcam_verify_entry(mcam, pcifunc, req->entry);
3642 mutex_unlock(&mcam->lock);
3643 if (rc)
3644 return rc;
3645
3646 npc_enable_mcam_entry(rvu, mcam, blkaddr, req->entry, true);
3647
3648 return 0;
3649 }
3650
rvu_mbox_handler_npc_mcam_dis_entry(struct rvu * rvu,struct npc_mcam_ena_dis_entry_req * req,struct msg_rsp * rsp)3651 int rvu_mbox_handler_npc_mcam_dis_entry(struct rvu *rvu,
3652 struct npc_mcam_ena_dis_entry_req *req,
3653 struct msg_rsp *rsp)
3654 {
3655 struct npc_mcam *mcam = &rvu->hw->mcam;
3656 u16 pcifunc = req->hdr.pcifunc;
3657 int blkaddr, rc;
3658
3659 req->entry = npc_cn20k_vidx2idx(req->entry);
3660
3661 blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
3662 if (blkaddr < 0)
3663 return NPC_MCAM_INVALID_REQ;
3664
3665 mutex_lock(&mcam->lock);
3666 rc = npc_mcam_verify_entry(mcam, pcifunc, req->entry);
3667 mutex_unlock(&mcam->lock);
3668 if (rc)
3669 return rc;
3670
3671 npc_enable_mcam_entry(rvu, mcam, blkaddr, req->entry, false);
3672
3673 return 0;
3674 }
3675
rvu_mbox_handler_npc_mcam_shift_entry(struct rvu * rvu,struct npc_mcam_shift_entry_req * req,struct npc_mcam_shift_entry_rsp * rsp)3676 int rvu_mbox_handler_npc_mcam_shift_entry(struct rvu *rvu,
3677 struct npc_mcam_shift_entry_req *req,
3678 struct npc_mcam_shift_entry_rsp *rsp)
3679 {
3680 struct npc_mcam *mcam = &rvu->hw->mcam;
3681 u16 pcifunc = req->hdr.pcifunc;
3682 u16 old_entry, new_entry;
3683 int blkaddr, rc = 0;
3684 u16 index, cntr;
3685
3686 blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
3687 if (blkaddr < 0)
3688 return NPC_MCAM_INVALID_REQ;
3689
3690 if (req->shift_count > NPC_MCAM_MAX_SHIFTS)
3691 return NPC_MCAM_INVALID_REQ;
3692
3693 mutex_lock(&mcam->lock);
3694 for (index = 0; index < req->shift_count; index++) {
3695 old_entry = npc_cn20k_vidx2idx(req->curr_entry[index]);
3696 new_entry = npc_cn20k_vidx2idx(req->new_entry[index]);
3697
3698 /* Check if both old and new entries are valid and
3699 * does belong to this PFFUNC or not.
3700 */
3701 rc = npc_mcam_verify_entry(mcam, pcifunc, old_entry);
3702 if (rc)
3703 break;
3704
3705 rc = npc_mcam_verify_entry(mcam, pcifunc, new_entry);
3706 if (rc)
3707 break;
3708
3709 /* new_entry should not have a counter mapped */
3710 if (mcam->entry2cntr_map[new_entry] != NPC_MCAM_INVALID_MAP) {
3711 rc = NPC_MCAM_PERM_DENIED;
3712 break;
3713 }
3714
3715 /* Disable the new_entry */
3716 npc_enable_mcam_entry(rvu, mcam, blkaddr, new_entry, false);
3717
3718 /* Copy rule from old entry to new entry */
3719 if (npc_copy_mcam_entry(rvu, mcam, blkaddr, old_entry, new_entry)) {
3720 rc = NPC_MCAM_INVALID_REQ;
3721 break;
3722 }
3723
3724 /* Copy counter mapping, if any */
3725 cntr = mcam->entry2cntr_map[old_entry];
3726 if (cntr != NPC_MCAM_INVALID_MAP) {
3727 npc_unmap_mcam_entry_and_cntr(rvu, mcam, blkaddr,
3728 old_entry, cntr);
3729 npc_map_mcam_entry_and_cntr(rvu, mcam, blkaddr,
3730 new_entry, cntr);
3731 }
3732
3733 /* Enable new_entry and disable old_entry */
3734 npc_enable_mcam_entry(rvu, mcam, blkaddr, new_entry, true);
3735 npc_enable_mcam_entry(rvu, mcam, blkaddr, old_entry, false);
3736 }
3737
3738 /* If shift has failed then report the failed index */
3739 if (index != req->shift_count) {
3740 if (!rc)
3741 rc = NPC_MCAM_PERM_DENIED;
3742 rsp->failed_entry_idx = index;
3743 }
3744
3745 mutex_unlock(&mcam->lock);
3746 return rc;
3747 }
3748
__npc_mcam_alloc_counter(struct rvu * rvu,struct npc_mcam_alloc_counter_req * req,struct npc_mcam_alloc_counter_rsp * rsp)3749 static int __npc_mcam_alloc_counter(struct rvu *rvu,
3750 struct npc_mcam_alloc_counter_req *req,
3751 struct npc_mcam_alloc_counter_rsp *rsp)
3752 {
3753 struct npc_mcam *mcam = &rvu->hw->mcam;
3754 u16 pcifunc = req->hdr.pcifunc;
3755 u16 max_contig, cntr;
3756 int blkaddr, index;
3757
3758 blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
3759 if (blkaddr < 0)
3760 return NPC_MCAM_INVALID_REQ;
3761
3762 /* If the request is from a PFFUNC with no NIXLF attached, ignore */
3763 if (!is_pffunc_af(pcifunc) && !is_nixlf_attached(rvu, pcifunc))
3764 return NPC_MCAM_INVALID_REQ;
3765
3766 /* Since list of allocated counter IDs needs to be sent to requester,
3767 * max number of non-contiguous counters per mbox msg is limited.
3768 */
3769 if (!req->contig && req->count > NPC_MAX_NONCONTIG_COUNTERS)
3770 return NPC_MCAM_INVALID_REQ;
3771
3772 /* Check if unused counters are available or not */
3773 if (!rvu_rsrc_free_count(&mcam->counters)) {
3774 return NPC_MCAM_ALLOC_FAILED;
3775 }
3776
3777 rsp->count = 0;
3778
3779 if (req->contig) {
3780 /* Allocate requested number of contiguous counters, if
3781 * unsuccessful find max contiguous entries available.
3782 */
3783 index = npc_mcam_find_zero_area(mcam->counters.bmap,
3784 mcam->counters.max, 0,
3785 req->count, &max_contig);
3786 rsp->count = max_contig;
3787 rsp->cntr = index;
3788 for (cntr = index; cntr < (index + max_contig); cntr++) {
3789 __set_bit(cntr, mcam->counters.bmap);
3790 mcam->cntr2pfvf_map[cntr] = pcifunc;
3791 }
3792 } else {
3793 /* Allocate requested number of non-contiguous counters,
3794 * if unsuccessful allocate as many as possible.
3795 */
3796 for (cntr = 0; cntr < req->count; cntr++) {
3797 index = rvu_alloc_rsrc(&mcam->counters);
3798 if (index < 0)
3799 break;
3800 rsp->cntr_list[cntr] = index;
3801 rsp->count++;
3802 mcam->cntr2pfvf_map[index] = pcifunc;
3803 }
3804 }
3805
3806 return 0;
3807 }
3808
rvu_mbox_handler_npc_mcam_alloc_counter(struct rvu * rvu,struct npc_mcam_alloc_counter_req * req,struct npc_mcam_alloc_counter_rsp * rsp)3809 int rvu_mbox_handler_npc_mcam_alloc_counter(struct rvu *rvu,
3810 struct npc_mcam_alloc_counter_req *req,
3811 struct npc_mcam_alloc_counter_rsp *rsp)
3812 {
3813 struct npc_mcam *mcam = &rvu->hw->mcam;
3814 int err;
3815
3816 /* Counter is not supported for CN20K */
3817 if (is_cn20k(rvu->pdev))
3818 return NPC_MCAM_INVALID_REQ;
3819
3820 mutex_lock(&mcam->lock);
3821
3822 err = __npc_mcam_alloc_counter(rvu, req, rsp);
3823
3824 mutex_unlock(&mcam->lock);
3825 return err;
3826 }
3827
__npc_mcam_free_counter(struct rvu * rvu,struct npc_mcam_oper_counter_req * req,struct msg_rsp * rsp)3828 static int __npc_mcam_free_counter(struct rvu *rvu,
3829 struct npc_mcam_oper_counter_req *req,
3830 struct msg_rsp *rsp)
3831 {
3832 struct npc_mcam *mcam = &rvu->hw->mcam;
3833 u16 index;
3834 int blkaddr, err;
3835
3836 blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
3837 if (blkaddr < 0)
3838 return NPC_MCAM_INVALID_REQ;
3839
3840 err = npc_mcam_verify_counter(mcam, req->hdr.pcifunc, req->cntr);
3841 if (err) {
3842 return err;
3843 }
3844
3845 /* Mark counter as free/unused */
3846 mcam->cntr2pfvf_map[req->cntr] = NPC_MCAM_INVALID_MAP;
3847 rvu_free_rsrc(&mcam->counters, req->cntr);
3848
3849 /* Disable all MCAM entry's stats which are using this counter.
3850 * Scan the full MCAM index range: AF-reserved rules (e.g. CPT pass-2)
3851 */
3852 for (index = 0; index < mcam->total_entries; index++) {
3853 if (!mcam->cntr_refcnt[req->cntr])
3854 break;
3855 if (mcam->entry2cntr_map[index] != req->cntr)
3856 continue;
3857 npc_unmap_mcam_entry_and_cntr(rvu, mcam, blkaddr, index,
3858 req->cntr);
3859 }
3860
3861 return 0;
3862 }
3863
rvu_mbox_handler_npc_mcam_free_counter(struct rvu * rvu,struct npc_mcam_oper_counter_req * req,struct msg_rsp * rsp)3864 int rvu_mbox_handler_npc_mcam_free_counter(struct rvu *rvu,
3865 struct npc_mcam_oper_counter_req *req, struct msg_rsp *rsp)
3866 {
3867 struct npc_mcam *mcam = &rvu->hw->mcam;
3868 int err;
3869
3870 /* Counter is not supported for CN20K */
3871 if (is_cn20k(rvu->pdev))
3872 return NPC_MCAM_INVALID_REQ;
3873
3874 mutex_lock(&mcam->lock);
3875
3876 err = __npc_mcam_free_counter(rvu, req, rsp);
3877
3878 mutex_unlock(&mcam->lock);
3879
3880 return err;
3881 }
3882
__rvu_mcam_remove_counter_from_rule(struct rvu * rvu,u16 pcifunc,struct rvu_npc_mcam_rule * rule)3883 void __rvu_mcam_remove_counter_from_rule(struct rvu *rvu, u16 pcifunc,
3884 struct rvu_npc_mcam_rule *rule)
3885 {
3886 struct npc_mcam_oper_counter_req free_req = { 0 };
3887 struct msg_rsp free_rsp;
3888
3889 if (!rule->has_cntr)
3890 return;
3891
3892 free_req.hdr.pcifunc = pcifunc;
3893 free_req.cntr = rule->cntr;
3894
3895 __npc_mcam_free_counter(rvu, &free_req, &free_rsp);
3896 rule->has_cntr = false;
3897 }
3898
__rvu_mcam_add_counter_to_rule(struct rvu * rvu,u16 pcifunc,struct rvu_npc_mcam_rule * rule,struct npc_install_flow_rsp * rsp)3899 void __rvu_mcam_add_counter_to_rule(struct rvu *rvu, u16 pcifunc,
3900 struct rvu_npc_mcam_rule *rule,
3901 struct npc_install_flow_rsp *rsp)
3902 {
3903 struct npc_mcam_alloc_counter_req cntr_req = { 0 };
3904 struct npc_mcam_alloc_counter_rsp cntr_rsp = { 0 };
3905 int err;
3906
3907 cntr_req.hdr.pcifunc = pcifunc;
3908 cntr_req.contig = true;
3909 cntr_req.count = 1;
3910
3911 /* we try to allocate a counter to track the stats of this
3912 * rule. If counter could not be allocated then proceed
3913 * without counter because counters are limited than entries.
3914 */
3915 err = __npc_mcam_alloc_counter(rvu, &cntr_req, &cntr_rsp);
3916 if (!err && cntr_rsp.count) {
3917 rule->cntr = cntr_rsp.cntr;
3918 rule->has_cntr = true;
3919 rsp->counter = rule->cntr;
3920 } else {
3921 rsp->counter = err;
3922 }
3923 }
3924
rvu_mbox_handler_npc_mcam_unmap_counter(struct rvu * rvu,struct npc_mcam_unmap_counter_req * req,struct msg_rsp * rsp)3925 int rvu_mbox_handler_npc_mcam_unmap_counter(struct rvu *rvu,
3926 struct npc_mcam_unmap_counter_req *req, struct msg_rsp *rsp)
3927 {
3928 struct npc_mcam *mcam = &rvu->hw->mcam;
3929 u16 index;
3930 int blkaddr, rc;
3931
3932 /* Counter is not supported for CN20K */
3933 if (is_cn20k(rvu->pdev))
3934 return NPC_MCAM_INVALID_REQ;
3935
3936 blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
3937 if (blkaddr < 0)
3938 return NPC_MCAM_INVALID_REQ;
3939
3940 mutex_lock(&mcam->lock);
3941 rc = npc_mcam_verify_counter(mcam, req->hdr.pcifunc, req->cntr);
3942 if (rc)
3943 goto exit;
3944
3945 /* Unmap the MCAM entry and counter */
3946 if (!req->all) {
3947 rc = npc_mcam_verify_entry(mcam, req->hdr.pcifunc, req->entry);
3948 if (rc)
3949 goto exit;
3950 npc_unmap_mcam_entry_and_cntr(rvu, mcam, blkaddr,
3951 req->entry, req->cntr);
3952 goto exit;
3953 }
3954
3955 /* Disable all MCAM entry's stats which are using this counter */
3956 for (index = 0; index < mcam->total_entries; index++) {
3957 if (!mcam->cntr_refcnt[req->cntr])
3958 break;
3959 if (mcam->entry2cntr_map[index] != req->cntr)
3960 continue;
3961 npc_unmap_mcam_entry_and_cntr(rvu, mcam, blkaddr, index,
3962 req->cntr);
3963 }
3964 exit:
3965 mutex_unlock(&mcam->lock);
3966 return rc;
3967 }
3968
rvu_mbox_handler_npc_mcam_clear_counter(struct rvu * rvu,struct npc_mcam_oper_counter_req * req,struct msg_rsp * rsp)3969 int rvu_mbox_handler_npc_mcam_clear_counter(struct rvu *rvu,
3970 struct npc_mcam_oper_counter_req *req, struct msg_rsp *rsp)
3971 {
3972 struct npc_mcam *mcam = &rvu->hw->mcam;
3973 int blkaddr, err, index, bank;
3974
3975 blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
3976 if (blkaddr < 0)
3977 return NPC_MCAM_INVALID_REQ;
3978
3979 /* For cn20k, npc mcam index is passed as cntr, as each
3980 * mcam entry has corresponding counter.
3981 */
3982 if (is_cn20k(rvu->pdev)) {
3983 index = req->cntr & (mcam->banksize - 1);
3984 bank = npc_get_bank(mcam, req->cntr);
3985 rvu_write64(rvu, blkaddr,
3986 NPC_AF_CN20K_MCAMEX_BANKX_STAT_EXT(index, bank), 0);
3987 return 0;
3988 }
3989
3990 mutex_lock(&mcam->lock);
3991 err = npc_mcam_verify_counter(mcam, req->hdr.pcifunc, req->cntr);
3992 mutex_unlock(&mcam->lock);
3993 if (err)
3994 return err;
3995
3996 rvu_write64(rvu, blkaddr, NPC_AF_MATCH_STATX(req->cntr), 0x00);
3997
3998 return 0;
3999 }
4000
rvu_mbox_handler_npc_mcam_counter_stats(struct rvu * rvu,struct npc_mcam_oper_counter_req * req,struct npc_mcam_oper_counter_rsp * rsp)4001 int rvu_mbox_handler_npc_mcam_counter_stats(struct rvu *rvu,
4002 struct npc_mcam_oper_counter_req *req,
4003 struct npc_mcam_oper_counter_rsp *rsp)
4004 {
4005 struct npc_mcam *mcam = &rvu->hw->mcam;
4006 int blkaddr, err, index, bank;
4007 u64 regval;
4008
4009 blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
4010 if (blkaddr < 0)
4011 return NPC_MCAM_INVALID_REQ;
4012
4013 /* In CN20K, mcam index is passed cntr. Each cn20k mcam entry
4014 * has its own counter. No need to verify the counter index.
4015 */
4016 if (is_cn20k(rvu->pdev)) {
4017 index = req->cntr & (mcam->banksize - 1);
4018 bank = npc_get_bank(mcam, req->cntr);
4019 regval = rvu_read64(rvu, blkaddr,
4020 NPC_AF_CN20K_MCAMEX_BANKX_STAT_EXT(index,
4021 bank));
4022 rsp->stat = regval;
4023 return 0;
4024 }
4025
4026 mutex_lock(&mcam->lock);
4027 err = npc_mcam_verify_counter(mcam, req->hdr.pcifunc, req->cntr);
4028 mutex_unlock(&mcam->lock);
4029 if (err)
4030 return err;
4031
4032 rsp->stat = rvu_read64(rvu, blkaddr, NPC_AF_MATCH_STATX(req->cntr));
4033 rsp->stat &= BIT_ULL(48) - 1;
4034
4035 return 0;
4036 }
4037
rvu_mbox_handler_npc_mcam_alloc_and_write_entry(struct rvu * rvu,struct npc_mcam_alloc_and_write_entry_req * req,struct npc_mcam_alloc_and_write_entry_rsp * rsp)4038 int rvu_mbox_handler_npc_mcam_alloc_and_write_entry(struct rvu *rvu,
4039 struct npc_mcam_alloc_and_write_entry_req *req,
4040 struct npc_mcam_alloc_and_write_entry_rsp *rsp)
4041 {
4042 struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, req->hdr.pcifunc);
4043 struct npc_mcam_alloc_counter_req cntr_req;
4044 struct npc_mcam_alloc_counter_rsp cntr_rsp;
4045 struct npc_mcam_alloc_entry_req entry_req;
4046 struct npc_mcam_alloc_entry_rsp entry_rsp;
4047 struct npc_mcam *mcam = &rvu->hw->mcam;
4048 u16 entry = NPC_MCAM_ENTRY_INVALID;
4049 u16 cntr = NPC_MCAM_ENTRY_INVALID;
4050 int blkaddr, rc;
4051 u8 nix_intf;
4052
4053 blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
4054 if (blkaddr < 0)
4055 return NPC_MCAM_INVALID_REQ;
4056
4057 if (!is_npc_interface_valid(rvu, req->intf))
4058 return NPC_MCAM_INVALID_REQ;
4059
4060 /* Try to allocate a MCAM entry */
4061 entry_req.hdr.pcifunc = req->hdr.pcifunc;
4062 entry_req.contig = true;
4063 entry_req.ref_prio = req->ref_prio;
4064 entry_req.ref_entry = req->ref_entry;
4065 entry_req.count = 1;
4066
4067 rc = rvu_mbox_handler_npc_mcam_alloc_entry(rvu,
4068 &entry_req, &entry_rsp);
4069 if (rc)
4070 return rc;
4071
4072 if (!entry_rsp.count)
4073 return NPC_MCAM_ALLOC_FAILED;
4074
4075 entry = entry_rsp.entry;
4076
4077 if (!req->alloc_cntr)
4078 goto write_entry;
4079
4080 /* Now allocate counter */
4081 cntr_req.hdr.pcifunc = req->hdr.pcifunc;
4082 cntr_req.contig = true;
4083 cntr_req.count = 1;
4084
4085 rc = rvu_mbox_handler_npc_mcam_alloc_counter(rvu, &cntr_req, &cntr_rsp);
4086 if (rc) {
4087 /* Free allocated MCAM entry */
4088 mutex_lock(&mcam->lock);
4089 mcam->entry2pfvf_map[entry] = NPC_MCAM_INVALID_MAP;
4090 npc_mcam_clear_bit(mcam, entry);
4091 mutex_unlock(&mcam->lock);
4092 return rc;
4093 }
4094
4095 cntr = cntr_rsp.cntr;
4096
4097 write_entry:
4098 mutex_lock(&mcam->lock);
4099
4100 if (is_npc_intf_tx(req->intf))
4101 nix_intf = pfvf->nix_tx_intf;
4102 else
4103 nix_intf = pfvf->nix_rx_intf;
4104
4105 npc_config_mcam_entry(rvu, mcam, blkaddr, entry, nix_intf,
4106 &req->entry_data, req->enable_entry);
4107
4108 if (req->alloc_cntr)
4109 npc_map_mcam_entry_and_cntr(rvu, mcam, blkaddr, entry, cntr);
4110 mutex_unlock(&mcam->lock);
4111
4112 rsp->entry = entry;
4113 rsp->cntr = cntr;
4114
4115 return 0;
4116 }
4117
4118 #define GET_KEX_CFG(intf) \
4119 rvu_read64(rvu, BLKADDR_NPC, NPC_AF_INTFX_KEX_CFG(intf))
4120
4121 #define GET_KEX_FLAGS(ld) \
4122 rvu_read64(rvu, BLKADDR_NPC, NPC_AF_KEX_LDATAX_FLAGS_CFG(ld))
4123
4124 #define GET_KEX_LD(intf, lid, lt, ld) \
4125 rvu_read64(rvu, BLKADDR_NPC, \
4126 NPC_AF_INTFX_LIDX_LTX_LDX_CFG(intf, lid, lt, ld))
4127
4128 #define GET_KEX_LDFLAGS(intf, ld, fl) \
4129 rvu_read64(rvu, BLKADDR_NPC, \
4130 NPC_AF_INTFX_LDATAX_FLAGSX_CFG(intf, ld, fl))
4131
rvu_mbox_handler_npc_get_kex_cfg(struct rvu * rvu,struct msg_req * req,struct npc_get_kex_cfg_rsp * rsp)4132 int rvu_mbox_handler_npc_get_kex_cfg(struct rvu *rvu, struct msg_req *req,
4133 struct npc_get_kex_cfg_rsp *rsp)
4134 {
4135 int lid, lt, ld, fl;
4136
4137 rsp->rx_keyx_cfg = GET_KEX_CFG(NIX_INTF_RX);
4138 rsp->tx_keyx_cfg = GET_KEX_CFG(NIX_INTF_TX);
4139 for (lid = 0; lid < NPC_MAX_LID; lid++) {
4140 for (lt = 0; lt < NPC_MAX_LT; lt++) {
4141 for (ld = 0; ld < NPC_MAX_LD; ld++) {
4142 rsp->intf_lid_lt_ld[NIX_INTF_RX][lid][lt][ld] =
4143 GET_KEX_LD(NIX_INTF_RX, lid, lt, ld);
4144 rsp->intf_lid_lt_ld[NIX_INTF_TX][lid][lt][ld] =
4145 GET_KEX_LD(NIX_INTF_TX, lid, lt, ld);
4146 }
4147 }
4148 }
4149 for (ld = 0; ld < NPC_MAX_LD; ld++)
4150 rsp->kex_ld_flags[ld] = GET_KEX_FLAGS(ld);
4151
4152 for (ld = 0; ld < NPC_MAX_LD; ld++) {
4153 for (fl = 0; fl < NPC_MAX_LFL; fl++) {
4154 rsp->intf_ld_flags[NIX_INTF_RX][ld][fl] =
4155 GET_KEX_LDFLAGS(NIX_INTF_RX, ld, fl);
4156 rsp->intf_ld_flags[NIX_INTF_TX][ld][fl] =
4157 GET_KEX_LDFLAGS(NIX_INTF_TX, ld, fl);
4158 }
4159 }
4160 memcpy(rsp->mkex_pfl_name, rvu->mkex_pfl_name, MKEX_NAME_LEN);
4161 return 0;
4162 }
4163
4164 static int
npc_set_var_len_offset_pkind(struct rvu * rvu,u16 pcifunc,u64 pkind,u8 var_len_off,u8 var_len_off_mask,u8 shift_dir)4165 npc_set_var_len_offset_pkind(struct rvu *rvu, u16 pcifunc, u64 pkind,
4166 u8 var_len_off, u8 var_len_off_mask, u8 shift_dir)
4167 {
4168 struct npc_kpu_action0 *act0;
4169 u8 shift_count = 0;
4170 int blkaddr;
4171 u64 val;
4172
4173 if (!var_len_off_mask)
4174 return -EINVAL;
4175
4176 if (var_len_off_mask != 0xff) {
4177 if (shift_dir)
4178 shift_count = __ffs(var_len_off_mask);
4179 else
4180 shift_count = (8 - __fls(var_len_off_mask));
4181 }
4182 blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, pcifunc);
4183 if (blkaddr < 0) {
4184 dev_err(rvu->dev, "%s: NPC block not implemented\n", __func__);
4185 return -EINVAL;
4186 }
4187 val = rvu_read64(rvu, blkaddr, NPC_AF_PKINDX_ACTION0(pkind));
4188 act0 = (struct npc_kpu_action0 *)&val;
4189 act0->var_len_shift = shift_count;
4190 act0->var_len_right = shift_dir;
4191 act0->var_len_mask = var_len_off_mask;
4192 act0->var_len_offset = var_len_off;
4193 rvu_write64(rvu, blkaddr, NPC_AF_PKINDX_ACTION0(pkind), val);
4194 return 0;
4195 }
4196
npc_set_skip_size_pkind(struct rvu * rvu,u16 pcifunc,u64 pkind,u8 skip_size)4197 static int npc_set_skip_size_pkind(struct rvu *rvu, u16 pcifunc, u64 pkind,
4198 u8 skip_size)
4199 {
4200 struct npc_kpu_action0 *act0;
4201 int blkaddr;
4202 u64 val;
4203
4204 blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, pcifunc);
4205 if (blkaddr < 0) {
4206 dev_err(rvu->dev, "%s: NPC block not implemented\n", __func__);
4207 return -EINVAL;
4208 }
4209
4210 val = rvu_read64(rvu, blkaddr, NPC_AF_PKINDX_ACTION0(pkind));
4211 act0 = (struct npc_kpu_action0 *)&val;
4212 act0->ptr_advance = skip_size;
4213 rvu_write64(rvu, blkaddr, NPC_AF_PKINDX_ACTION0(pkind), val);
4214
4215 /* Update CPT_HR new PKIND */
4216 val = rvu_read64(rvu, blkaddr, NPC_AF_PKINDX_ACTION0(pkind + 4));
4217 act0 = (struct npc_kpu_action0 *)&val;
4218 act0->ptr_advance = (skip_size + 40);
4219 act0->next_state = NPC_S_KPU1_CPT_HDR;
4220 act0->var_len_offset = (skip_size + 6);
4221 act0->var_len_mask = 0xe0;
4222 act0->var_len_shift = 0x5;
4223 act0->var_len_right = 0x1;
4224 rvu_write64(rvu, blkaddr, NPC_AF_PKINDX_ACTION0(pkind + 4), val);
4225 return 0;
4226 }
4227
rvu_npc_set_parse_mode(struct rvu * rvu,u16 pcifunc,u64 mode,u8 dir,u64 pkind,u8 var_len_off,u8 var_len_off_mask,u8 shift_dir,u8 skip_size)4228 int rvu_npc_set_parse_mode(struct rvu *rvu, u16 pcifunc, u64 mode, u8 dir,
4229 u64 pkind, u8 var_len_off, u8 var_len_off_mask,
4230 u8 shift_dir, u8 skip_size)
4231 {
4232 struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, pcifunc);
4233 int pf = rvu_get_pf(rvu->pdev, pcifunc);
4234 int blkaddr, nixlf, rc, intf_mode;
4235 u8 cgx_id = 0, lmac_id = 0;
4236 u64 rxpkind, txpkind;
4237 struct cgx *cgxd;
4238
4239 /* use default pkind to disable edsa/higig */
4240 rxpkind = rvu_npc_get_pkind(rvu, pf);
4241 txpkind = NPC_TX_DEF_PKIND;
4242 intf_mode = NPC_INTF_MODE_DEF;
4243
4244 if (mode & OTX2_PRIV_FLAGS_CUSTOM) {
4245 if (pkind == NPC_RX_CUSTOM_PRE_L2_PKIND) {
4246 rc = npc_set_var_len_offset_pkind(rvu, pcifunc, pkind,
4247 var_len_off,
4248 var_len_off_mask,
4249 shift_dir);
4250 if (rc)
4251 return rc;
4252 } else if (pkind >= NPC_RX_SKIP_SIZE_PKIND &&
4253 pkind <= NPC_RX_SKIP_SIZE_PKIND + 3) {
4254 rc = npc_set_skip_size_pkind(rvu, pcifunc, pkind,
4255 skip_size);
4256 if (rc)
4257 return rc;
4258 }
4259 rxpkind = pkind;
4260 txpkind = pkind;
4261 }
4262
4263 if (dir & PKIND_RX) {
4264 /* rx pkind set req valid only for cgx mapped PFs */
4265 if (!is_cgx_config_permitted(rvu, pcifunc))
4266 return 0;
4267 if (!rvu_cgx_check_permission_and_set_pkind(rvu, pcifunc, rxpkind))
4268 return -EINVAL;
4269 }
4270
4271 if (dir & PKIND_TX) {
4272 /* Tx pkind set request valid if PCIFUNC has NIXLF attached */
4273 rc = nix_get_nixlf(rvu, pcifunc, &nixlf, &blkaddr);
4274 if (rc)
4275 return rc;
4276
4277 if (is_pf_cgxmapped(rvu, pf) && is_vf(pcifunc)) {
4278 rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id,
4279 &lmac_id);
4280 cgxd = rvu_cgx_pdata(cgx_id, rvu);
4281 mutex_lock(&cgxd->lock);
4282 if (rvu_cgx_is_pkind_config_permitted(rvu, pcifunc))
4283 rvu_write64(rvu, blkaddr, NIX_AF_LFX_TX_PARSE_CFG(nixlf),
4284 txpkind);
4285 mutex_unlock(&cgxd->lock);
4286 } else {
4287 rvu_write64(rvu, blkaddr, NIX_AF_LFX_TX_PARSE_CFG(nixlf),
4288 txpkind);
4289 }
4290 }
4291
4292 pfvf->intf_mode = intf_mode;
4293 return 0;
4294 }
4295
rvu_mbox_handler_npc_set_pkind(struct rvu * rvu,struct npc_set_pkind * req,struct msg_rsp * rsp)4296 int rvu_mbox_handler_npc_set_pkind(struct rvu *rvu, struct npc_set_pkind *req,
4297 struct msg_rsp *rsp)
4298 {
4299 return rvu_npc_set_parse_mode(rvu, req->hdr.pcifunc, req->mode,
4300 req->dir, req->pkind, req->var_len_off,
4301 req->var_len_off_mask, req->shift_dir,
4302 req->skip_size);
4303 }
4304
rvu_mbox_handler_npc_read_default_rule(struct rvu * rvu,struct msg_req * req,struct npc_mcam_read_base_rule_rsp * rsp)4305 int rvu_mbox_handler_npc_read_default_rule(struct rvu *rvu,
4306 struct msg_req *req,
4307 struct npc_mcam_read_base_rule_rsp *rsp)
4308 {
4309 struct npc_mcam *mcam = &rvu->hw->mcam;
4310 int index, blkaddr, nixlf, rc;
4311 u16 pcifunc = req->hdr.pcifunc;
4312 u8 intf, enable;
4313
4314 if (is_cn20k(rvu->pdev))
4315 return NPC_MCAM_INVALID_REQ;
4316
4317 blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
4318 if (blkaddr < 0)
4319 return NPC_MCAM_INVALID_REQ;
4320
4321 rc = nix_get_nixlf(rvu, pcifunc, &nixlf, NULL);
4322 if (rc < 0)
4323 return rc;
4324
4325 /* Read the default ucast entry */
4326 mutex_lock(&mcam->lock);
4327 index = npc_get_nixlf_mcam_index(mcam, pcifunc, nixlf,
4328 NIXLF_UCAST_ENTRY);
4329 if (index < 0) {
4330 mutex_unlock(&mcam->lock);
4331 return NIX_AF_ERR_AF_LF_INVALID;
4332 }
4333
4334 /* Read the mcam entry */
4335 npc_read_mcam_entry(rvu, mcam, blkaddr, index, &rsp->entry, &intf,
4336 &enable);
4337 mutex_unlock(&mcam->lock);
4338
4339 return 0;
4340 }
4341
rvu_mbox_handler_npc_read_base_steer_rule(struct rvu * rvu,struct msg_req * req,struct npc_mcam_read_base_rule_rsp * rsp)4342 int rvu_mbox_handler_npc_read_base_steer_rule(struct rvu *rvu,
4343 struct msg_req *req,
4344 struct npc_mcam_read_base_rule_rsp *rsp)
4345 {
4346 struct npc_mcam *mcam = &rvu->hw->mcam;
4347 int index, blkaddr, nixlf, rc = 0;
4348 u16 pcifunc = req->hdr.pcifunc;
4349 struct rvu_pfvf *pfvf;
4350 u8 intf, enable;
4351
4352 blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
4353 if (blkaddr < 0)
4354 return NPC_MCAM_INVALID_REQ;
4355
4356 /* Return the channel number in case of PF */
4357 if (!(pcifunc & RVU_PFVF_FUNC_MASK)) {
4358 pfvf = rvu_get_pfvf(rvu, pcifunc);
4359 rsp->entry.kw[0] = pfvf->rx_chan_base;
4360 rsp->entry.kw_mask[0] = 0xFFFULL;
4361 goto out;
4362 }
4363
4364 /* Find the pkt steering rule installed by PF to this VF */
4365 mutex_lock(&mcam->lock);
4366 for (index = 0; index < mcam->bmap_entries; index++) {
4367 if (mcam->entry2target_pffunc[index] == pcifunc)
4368 goto read_entry;
4369 }
4370
4371 rc = nix_get_nixlf(rvu, pcifunc, &nixlf, NULL);
4372 if (rc < 0) {
4373 mutex_unlock(&mcam->lock);
4374 goto out;
4375 }
4376 /* Read the default ucast entry if there is no pkt steering rule */
4377 index = npc_get_nixlf_mcam_index(mcam, pcifunc, nixlf,
4378 NIXLF_UCAST_ENTRY);
4379 if (index < 0) {
4380 mutex_unlock(&mcam->lock);
4381 rc = NIX_AF_ERR_AF_LF_INVALID;
4382 goto out;
4383 }
4384
4385 read_entry:
4386 /* Read the mcam entry */
4387 npc_read_mcam_entry(rvu, mcam, blkaddr, index, &rsp->entry, &intf,
4388 &enable);
4389 mutex_unlock(&mcam->lock);
4390 out:
4391 return rc;
4392 }
4393
rvu_mbox_handler_npc_mcam_entry_stats(struct rvu * rvu,struct npc_mcam_get_stats_req * req,struct npc_mcam_get_stats_rsp * rsp)4394 int rvu_mbox_handler_npc_mcam_entry_stats(struct rvu *rvu,
4395 struct npc_mcam_get_stats_req *req,
4396 struct npc_mcam_get_stats_rsp *rsp)
4397 {
4398 struct npc_mcam *mcam = &rvu->hw->mcam;
4399 u16 index, cntr;
4400 int blkaddr;
4401 u64 regval;
4402 u32 bank;
4403
4404 blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
4405 if (blkaddr < 0)
4406 return NPC_MCAM_INVALID_REQ;
4407
4408 req->entry = npc_cn20k_vidx2idx(req->entry);
4409
4410 index = req->entry & (mcam->banksize - 1);
4411 bank = npc_get_bank(mcam, req->entry);
4412
4413 mutex_lock(&mcam->lock);
4414
4415 if (is_cn20k(rvu->pdev)) {
4416 regval = rvu_read64(rvu, blkaddr,
4417 NPC_AF_CN20K_MCAMEX_BANKX_STAT_EXT(index,
4418 bank));
4419 rsp->stat_ena = 1;
4420 rsp->stat = regval;
4421 mutex_unlock(&mcam->lock);
4422 return 0;
4423 }
4424
4425 /* read MCAM entry STAT_ACT register */
4426 regval = rvu_read64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_STAT_ACT(index,
4427 bank));
4428
4429 if (!(regval & rvu->hw->npc_stat_ena)) {
4430 rsp->stat_ena = 0;
4431 mutex_unlock(&mcam->lock);
4432 return 0;
4433 }
4434
4435 cntr = regval & 0x1FF;
4436
4437 rsp->stat_ena = 1;
4438 rsp->stat = rvu_read64(rvu, blkaddr, NPC_AF_MATCH_STATX(cntr));
4439 rsp->stat &= BIT_ULL(48) - 1;
4440
4441 mutex_unlock(&mcam->lock);
4442
4443 return 0;
4444 }
4445
rvu_npc_clear_ucast_entry(struct rvu * rvu,int pcifunc,int nixlf)4446 void rvu_npc_clear_ucast_entry(struct rvu *rvu, int pcifunc, int nixlf)
4447 {
4448 struct npc_mcam *mcam = &rvu->hw->mcam;
4449 struct rvu_npc_mcam_rule *rule;
4450 int ucast_idx, blkaddr;
4451
4452 blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
4453 if (blkaddr < 0)
4454 return;
4455
4456 ucast_idx = npc_get_nixlf_mcam_index(mcam, pcifunc,
4457 nixlf, NIXLF_UCAST_ENTRY);
4458
4459 /* In cn20k, default rules are freed before detach rsrc */
4460 if (ucast_idx < 0)
4461 return;
4462
4463 npc_enable_mcam_entry(rvu, mcam, blkaddr, ucast_idx, false);
4464
4465 npc_set_mcam_action(rvu, mcam, blkaddr, ucast_idx, 0);
4466
4467 npc_clear_mcam_entry(rvu, mcam, blkaddr, ucast_idx);
4468
4469 mutex_lock(&mcam->lock);
4470 list_for_each_entry(rule, &mcam->mcam_rules, list) {
4471 if (rule->entry == ucast_idx) {
4472 list_del(&rule->list);
4473 kfree(rule);
4474 break;
4475 }
4476 }
4477 mutex_unlock(&mcam->lock);
4478 }
4479