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/module.h>
9 #include <linux/pci.h>
10 
11 #include "rvu_struct.h"
12 #include "rvu_reg.h"
13 #include "rvu.h"
14 #include "npc.h"
15 #include "cgx.h"
16 #include "lmac_common.h"
17 #include "rvu_npc_hash.h"
18 
19 static void nix_free_tx_vtag_entries(struct rvu *rvu, u16 pcifunc);
20 static int rvu_nix_get_bpid(struct rvu *rvu, struct nix_bp_cfg_req *req,
21 			    int type, int chan_id);
22 static int nix_update_mce_rule(struct rvu *rvu, u16 pcifunc,
23 			       int type, bool add);
24 static int nix_setup_ipolicers(struct rvu *rvu,
25 			       struct nix_hw *nix_hw, int blkaddr);
26 static void nix_ipolicer_freemem(struct rvu *rvu, struct nix_hw *nix_hw);
27 static int nix_verify_bandprof(struct nix_cn10k_aq_enq_req *req,
28 			       struct nix_hw *nix_hw, u16 pcifunc);
29 static int nix_free_all_bandprof(struct rvu *rvu, u16 pcifunc);
30 static void nix_clear_ratelimit_aggr(struct rvu *rvu, struct nix_hw *nix_hw,
31 				     u32 leaf_prof);
32 static const char *nix_get_ctx_name(int ctype);
33 
34 enum mc_tbl_sz {
35 	MC_TBL_SZ_256,
36 	MC_TBL_SZ_512,
37 	MC_TBL_SZ_1K,
38 	MC_TBL_SZ_2K,
39 	MC_TBL_SZ_4K,
40 	MC_TBL_SZ_8K,
41 	MC_TBL_SZ_16K,
42 	MC_TBL_SZ_32K,
43 	MC_TBL_SZ_64K,
44 };
45 
46 enum mc_buf_cnt {
47 	MC_BUF_CNT_8,
48 	MC_BUF_CNT_16,
49 	MC_BUF_CNT_32,
50 	MC_BUF_CNT_64,
51 	MC_BUF_CNT_128,
52 	MC_BUF_CNT_256,
53 	MC_BUF_CNT_512,
54 	MC_BUF_CNT_1024,
55 	MC_BUF_CNT_2048,
56 };
57 
58 enum nix_makr_fmt_indexes {
59 	NIX_MARK_CFG_IP_DSCP_RED,
60 	NIX_MARK_CFG_IP_DSCP_YELLOW,
61 	NIX_MARK_CFG_IP_DSCP_YELLOW_RED,
62 	NIX_MARK_CFG_IP_ECN_RED,
63 	NIX_MARK_CFG_IP_ECN_YELLOW,
64 	NIX_MARK_CFG_IP_ECN_YELLOW_RED,
65 	NIX_MARK_CFG_VLAN_DEI_RED,
66 	NIX_MARK_CFG_VLAN_DEI_YELLOW,
67 	NIX_MARK_CFG_VLAN_DEI_YELLOW_RED,
68 	NIX_MARK_CFG_MAX,
69 };
70 
71 /* For now considering MC resources needed for broadcast
72  * pkt replication only. i.e 256 HWVFs + 12 PFs.
73  */
74 #define MC_TBL_SIZE	MC_TBL_SZ_512
75 #define MC_BUF_CNT	MC_BUF_CNT_128
76 
77 struct mce {
78 	struct hlist_node	node;
79 	u16			pcifunc;
80 };
81 
rvu_get_next_nix_blkaddr(struct rvu * rvu,int blkaddr)82 int rvu_get_next_nix_blkaddr(struct rvu *rvu, int blkaddr)
83 {
84 	int i = 0;
85 
86 	/*If blkaddr is 0, return the first nix block address*/
87 	if (blkaddr == 0)
88 		return rvu->nix_blkaddr[blkaddr];
89 
90 	while (i + 1 < MAX_NIX_BLKS) {
91 		if (rvu->nix_blkaddr[i] == blkaddr)
92 			return rvu->nix_blkaddr[i + 1];
93 		i++;
94 	}
95 
96 	return 0;
97 }
98 
is_nixlf_attached(struct rvu * rvu,u16 pcifunc)99 bool is_nixlf_attached(struct rvu *rvu, u16 pcifunc)
100 {
101 	struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, pcifunc);
102 	int blkaddr;
103 
104 	blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, pcifunc);
105 	if (!pfvf->nixlf || blkaddr < 0)
106 		return false;
107 	return true;
108 }
109 
rvu_get_nixlf_count(struct rvu * rvu)110 int rvu_get_nixlf_count(struct rvu *rvu)
111 {
112 	int blkaddr = 0, max = 0;
113 	struct rvu_block *block;
114 
115 	blkaddr = rvu_get_next_nix_blkaddr(rvu, blkaddr);
116 	while (blkaddr) {
117 		block = &rvu->hw->block[blkaddr];
118 		max += block->lf.max;
119 		blkaddr = rvu_get_next_nix_blkaddr(rvu, blkaddr);
120 	}
121 	return max;
122 }
123 
nix_get_nixlf(struct rvu * rvu,u16 pcifunc,int * nixlf,int * nix_blkaddr)124 int nix_get_nixlf(struct rvu *rvu, u16 pcifunc, int *nixlf, int *nix_blkaddr)
125 {
126 	struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, pcifunc);
127 	struct rvu_hwinfo *hw = rvu->hw;
128 	int blkaddr;
129 
130 	blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, pcifunc);
131 	if (!pfvf->nixlf || blkaddr < 0)
132 		return NIX_AF_ERR_AF_LF_INVALID;
133 
134 	*nixlf = rvu_get_lf(rvu, &hw->block[blkaddr], pcifunc, 0);
135 	if (*nixlf < 0)
136 		return NIX_AF_ERR_AF_LF_INVALID;
137 
138 	if (nix_blkaddr)
139 		*nix_blkaddr = blkaddr;
140 
141 	return 0;
142 }
143 
nix_get_struct_ptrs(struct rvu * rvu,u16 pcifunc,struct nix_hw ** nix_hw,int * blkaddr)144 int nix_get_struct_ptrs(struct rvu *rvu, u16 pcifunc,
145 			struct nix_hw **nix_hw, int *blkaddr)
146 {
147 	struct rvu_pfvf *pfvf;
148 
149 	pfvf = rvu_get_pfvf(rvu, pcifunc);
150 	*blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, pcifunc);
151 	if (!pfvf->nixlf || *blkaddr < 0)
152 		return NIX_AF_ERR_AF_LF_INVALID;
153 
154 	*nix_hw = get_nix_hw(rvu->hw, *blkaddr);
155 	if (!*nix_hw)
156 		return NIX_AF_ERR_INVALID_NIXBLK;
157 	return 0;
158 }
159 
nix_mce_list_init(struct nix_mce_list * list,int max)160 static void nix_mce_list_init(struct nix_mce_list *list, int max)
161 {
162 	INIT_HLIST_HEAD(&list->head);
163 	list->count = 0;
164 	list->max = max;
165 }
166 
nix_alloc_mce_list(struct nix_mcast * mcast,int count)167 static u16 nix_alloc_mce_list(struct nix_mcast *mcast, int count)
168 {
169 	int idx;
170 
171 	if (!mcast)
172 		return 0;
173 
174 	idx = mcast->next_free_mce;
175 	mcast->next_free_mce += count;
176 	return idx;
177 }
178 
get_nix_hw(struct rvu_hwinfo * hw,int blkaddr)179 struct nix_hw *get_nix_hw(struct rvu_hwinfo *hw, int blkaddr)
180 {
181 	int nix_blkaddr = 0, i = 0;
182 	struct rvu *rvu = hw->rvu;
183 
184 	nix_blkaddr = rvu_get_next_nix_blkaddr(rvu, nix_blkaddr);
185 	while (nix_blkaddr) {
186 		if (blkaddr == nix_blkaddr && hw->nix)
187 			return &hw->nix[i];
188 		nix_blkaddr = rvu_get_next_nix_blkaddr(rvu, nix_blkaddr);
189 		i++;
190 	}
191 	return NULL;
192 }
193 
convert_dwrr_mtu_to_bytes(u8 dwrr_mtu)194 u32 convert_dwrr_mtu_to_bytes(u8 dwrr_mtu)
195 {
196 	dwrr_mtu &= 0x1FULL;
197 
198 	/* MTU used for DWRR calculation is in power of 2 up until 64K bytes.
199 	 * Value of 4 is reserved for MTU value of 9728 bytes.
200 	 * Value of 5 is reserved for MTU value of 10240 bytes.
201 	 */
202 	switch (dwrr_mtu) {
203 	case 4:
204 		return 9728;
205 	case 5:
206 		return 10240;
207 	default:
208 		return BIT_ULL(dwrr_mtu);
209 	}
210 
211 	return 0;
212 }
213 
convert_bytes_to_dwrr_mtu(u32 bytes)214 u32 convert_bytes_to_dwrr_mtu(u32 bytes)
215 {
216 	/* MTU used for DWRR calculation is in power of 2 up until 64K bytes.
217 	 * Value of 4 is reserved for MTU value of 9728 bytes.
218 	 * Value of 5 is reserved for MTU value of 10240 bytes.
219 	 */
220 	if (bytes > BIT_ULL(16))
221 		return 0;
222 
223 	switch (bytes) {
224 	case 9728:
225 		return 4;
226 	case 10240:
227 		return 5;
228 	default:
229 		return ilog2(bytes);
230 	}
231 
232 	return 0;
233 }
234 
nix_rx_sync(struct rvu * rvu,int blkaddr)235 static void nix_rx_sync(struct rvu *rvu, int blkaddr)
236 {
237 	int err;
238 
239 	/* Sync all in flight RX packets to LLC/DRAM */
240 	rvu_write64(rvu, blkaddr, NIX_AF_RX_SW_SYNC, BIT_ULL(0));
241 	err = rvu_poll_reg(rvu, blkaddr, NIX_AF_RX_SW_SYNC, BIT_ULL(0), true);
242 	if (err)
243 		dev_err(rvu->dev, "SYNC1: NIX RX software sync failed\n");
244 
245 	/* SW_SYNC ensures all existing transactions are finished and pkts
246 	 * are written to LLC/DRAM, queues should be teared down after
247 	 * successful SW_SYNC. Due to a HW errata, in some rare scenarios
248 	 * an existing transaction might end after SW_SYNC operation. To
249 	 * ensure operation is fully done, do the SW_SYNC twice.
250 	 */
251 	rvu_write64(rvu, blkaddr, NIX_AF_RX_SW_SYNC, BIT_ULL(0));
252 	err = rvu_poll_reg(rvu, blkaddr, NIX_AF_RX_SW_SYNC, BIT_ULL(0), true);
253 	if (err)
254 		dev_err(rvu->dev, "SYNC2: NIX RX software sync failed\n");
255 }
256 
is_valid_txschq(struct rvu * rvu,int blkaddr,int lvl,u16 pcifunc,u16 schq)257 static bool is_valid_txschq(struct rvu *rvu, int blkaddr,
258 			    int lvl, u16 pcifunc, u16 schq)
259 {
260 	struct rvu_hwinfo *hw = rvu->hw;
261 	struct nix_txsch *txsch;
262 	struct nix_hw *nix_hw;
263 	u16 map_func;
264 
265 	nix_hw = get_nix_hw(rvu->hw, blkaddr);
266 	if (!nix_hw)
267 		return false;
268 
269 	txsch = &nix_hw->txsch[lvl];
270 	/* Check out of bounds */
271 	if (schq >= txsch->schq.max)
272 		return false;
273 
274 	mutex_lock(&rvu->rsrc_lock);
275 	map_func = TXSCH_MAP_FUNC(txsch->pfvf_map[schq]);
276 	mutex_unlock(&rvu->rsrc_lock);
277 
278 	/* TLs aggegating traffic are shared across PF and VFs */
279 	if (lvl >= hw->cap.nix_tx_aggr_lvl) {
280 		if (rvu_get_pf(map_func) != rvu_get_pf(pcifunc))
281 			return false;
282 		else
283 			return true;
284 	}
285 
286 	if (map_func != pcifunc)
287 		return false;
288 
289 	return true;
290 }
291 
nix_interface_init(struct rvu * rvu,u16 pcifunc,int type,int nixlf,struct nix_lf_alloc_rsp * rsp,bool loop)292 static int nix_interface_init(struct rvu *rvu, u16 pcifunc, int type, int nixlf,
293 			      struct nix_lf_alloc_rsp *rsp, bool loop)
294 {
295 	struct rvu_pfvf *parent_pf, *pfvf = rvu_get_pfvf(rvu, pcifunc);
296 	u16 req_chan_base, req_chan_end, req_chan_cnt;
297 	struct rvu_hwinfo *hw = rvu->hw;
298 	struct sdp_node_info *sdp_info;
299 	int pkind, pf, vf, lbkid, vfid;
300 	u8 cgx_id, lmac_id;
301 	bool from_vf;
302 	int err;
303 
304 	pf = rvu_get_pf(pcifunc);
305 	if (!is_pf_cgxmapped(rvu, pf) && type != NIX_INTF_TYPE_LBK &&
306 	    type != NIX_INTF_TYPE_SDP)
307 		return 0;
308 
309 	switch (type) {
310 	case NIX_INTF_TYPE_CGX:
311 		pfvf->cgx_lmac = rvu->pf2cgxlmac_map[pf];
312 		rvu_get_cgx_lmac_id(pfvf->cgx_lmac, &cgx_id, &lmac_id);
313 
314 		pkind = rvu_npc_get_pkind(rvu, pf);
315 		if (pkind < 0) {
316 			dev_err(rvu->dev,
317 				"PF_Func 0x%x: Invalid pkind\n", pcifunc);
318 			return -EINVAL;
319 		}
320 		pfvf->rx_chan_base = rvu_nix_chan_cgx(rvu, cgx_id, lmac_id, 0);
321 		pfvf->tx_chan_base = pfvf->rx_chan_base;
322 		pfvf->rx_chan_cnt = 1;
323 		pfvf->tx_chan_cnt = 1;
324 		rsp->tx_link = cgx_id * hw->lmac_per_cgx + lmac_id;
325 
326 		cgx_set_pkind(rvu_cgx_pdata(cgx_id, rvu), lmac_id, pkind);
327 		rvu_npc_set_pkind(rvu, pkind, pfvf);
328 
329 		break;
330 	case NIX_INTF_TYPE_LBK:
331 		vf = (pcifunc & RVU_PFVF_FUNC_MASK) - 1;
332 
333 		/* If NIX1 block is present on the silicon then NIXes are
334 		 * assigned alternatively for lbk interfaces. NIX0 should
335 		 * send packets on lbk link 1 channels and NIX1 should send
336 		 * on lbk link 0 channels for the communication between
337 		 * NIX0 and NIX1.
338 		 */
339 		lbkid = 0;
340 		if (rvu->hw->lbk_links > 1)
341 			lbkid = vf & 0x1 ? 0 : 1;
342 
343 		/* By default NIX0 is configured to send packet on lbk link 1
344 		 * (which corresponds to LBK1), same packet will receive on
345 		 * NIX1 over lbk link 0. If NIX1 sends packet on lbk link 0
346 		 * (which corresponds to LBK2) packet will receive on NIX0 lbk
347 		 * link 1.
348 		 * But if lbk links for NIX0 and NIX1 are negated, i.e NIX0
349 		 * transmits and receives on lbk link 0, whick corresponds
350 		 * to LBK1 block, back to back connectivity between NIX and
351 		 * LBK can be achieved (which is similar to 96xx)
352 		 *
353 		 *			RX		TX
354 		 * NIX0 lbk link	1 (LBK2)	1 (LBK1)
355 		 * NIX0 lbk link	0 (LBK0)	0 (LBK0)
356 		 * NIX1 lbk link	0 (LBK1)	0 (LBK2)
357 		 * NIX1 lbk link	1 (LBK3)	1 (LBK3)
358 		 */
359 		if (loop)
360 			lbkid = !lbkid;
361 
362 		/* Note that AF's VFs work in pairs and talk over consecutive
363 		 * loopback channels.Therefore if odd number of AF VFs are
364 		 * enabled then the last VF remains with no pair.
365 		 */
366 		pfvf->rx_chan_base = rvu_nix_chan_lbk(rvu, lbkid, vf);
367 		pfvf->tx_chan_base = vf & 0x1 ?
368 					rvu_nix_chan_lbk(rvu, lbkid, vf - 1) :
369 					rvu_nix_chan_lbk(rvu, lbkid, vf + 1);
370 		pfvf->rx_chan_cnt = 1;
371 		pfvf->tx_chan_cnt = 1;
372 		rsp->tx_link = hw->cgx_links + lbkid;
373 		pfvf->lbkid = lbkid;
374 		rvu_npc_set_pkind(rvu, NPC_RX_LBK_PKIND, pfvf);
375 		rvu_npc_install_promisc_entry(rvu, pcifunc, nixlf,
376 					      pfvf->rx_chan_base,
377 					      pfvf->rx_chan_cnt);
378 
379 		break;
380 	case NIX_INTF_TYPE_SDP:
381 		from_vf = !!(pcifunc & RVU_PFVF_FUNC_MASK);
382 		parent_pf = &rvu->pf[rvu_get_pf(pcifunc)];
383 		sdp_info = parent_pf->sdp_info;
384 		if (!sdp_info) {
385 			dev_err(rvu->dev, "Invalid sdp_info pointer\n");
386 			return -EINVAL;
387 		}
388 		if (from_vf) {
389 			req_chan_base = rvu_nix_chan_sdp(rvu, 0) + sdp_info->pf_srn +
390 				sdp_info->num_pf_rings;
391 			vf = (pcifunc & RVU_PFVF_FUNC_MASK) - 1;
392 			for (vfid = 0; vfid < vf; vfid++)
393 				req_chan_base += sdp_info->vf_rings[vfid];
394 			req_chan_cnt = sdp_info->vf_rings[vf];
395 			req_chan_end = req_chan_base + req_chan_cnt - 1;
396 			if (req_chan_base < rvu_nix_chan_sdp(rvu, 0) ||
397 			    req_chan_end > rvu_nix_chan_sdp(rvu, 255)) {
398 				dev_err(rvu->dev,
399 					"PF_Func 0x%x: Invalid channel base and count\n",
400 					pcifunc);
401 				return -EINVAL;
402 			}
403 		} else {
404 			req_chan_base = rvu_nix_chan_sdp(rvu, 0) + sdp_info->pf_srn;
405 			req_chan_cnt = sdp_info->num_pf_rings;
406 		}
407 
408 		pfvf->rx_chan_base = req_chan_base;
409 		pfvf->rx_chan_cnt = req_chan_cnt;
410 		pfvf->tx_chan_base = pfvf->rx_chan_base;
411 		pfvf->tx_chan_cnt = pfvf->rx_chan_cnt;
412 
413 		rsp->tx_link = hw->cgx_links + hw->lbk_links;
414 		rvu_npc_install_promisc_entry(rvu, pcifunc, nixlf,
415 					      pfvf->rx_chan_base,
416 					      pfvf->rx_chan_cnt);
417 		break;
418 	}
419 
420 	/* Add a UCAST forwarding rule in MCAM with this NIXLF attached
421 	 * RVU PF/VF's MAC address.
422 	 */
423 	rvu_npc_install_ucast_entry(rvu, pcifunc, nixlf,
424 				    pfvf->rx_chan_base, pfvf->mac_addr);
425 
426 	/* Add this PF_FUNC to bcast pkt replication list */
427 	err = nix_update_mce_rule(rvu, pcifunc, NIXLF_BCAST_ENTRY, true);
428 	if (err) {
429 		dev_err(rvu->dev,
430 			"Bcast list, failed to enable PF_FUNC 0x%x\n",
431 			pcifunc);
432 		return err;
433 	}
434 	/* Install MCAM rule matching Ethernet broadcast mac address */
435 	rvu_npc_install_bcast_match_entry(rvu, pcifunc,
436 					  nixlf, pfvf->rx_chan_base);
437 
438 	pfvf->maxlen = NIC_HW_MIN_FRS;
439 	pfvf->minlen = NIC_HW_MIN_FRS;
440 
441 	return 0;
442 }
443 
nix_interface_deinit(struct rvu * rvu,u16 pcifunc,u8 nixlf)444 static void nix_interface_deinit(struct rvu *rvu, u16 pcifunc, u8 nixlf)
445 {
446 	struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, pcifunc);
447 	int err;
448 
449 	pfvf->maxlen = 0;
450 	pfvf->minlen = 0;
451 
452 	/* Remove this PF_FUNC from bcast pkt replication list */
453 	err = nix_update_mce_rule(rvu, pcifunc, NIXLF_BCAST_ENTRY, false);
454 	if (err) {
455 		dev_err(rvu->dev,
456 			"Bcast list, failed to disable PF_FUNC 0x%x\n",
457 			pcifunc);
458 	}
459 
460 	/* Free and disable any MCAM entries used by this NIX LF */
461 	rvu_npc_disable_mcam_entries(rvu, pcifunc, nixlf);
462 
463 	/* Disable DMAC filters used */
464 	rvu_cgx_disable_dmac_entries(rvu, pcifunc);
465 }
466 
rvu_mbox_handler_nix_bp_disable(struct rvu * rvu,struct nix_bp_cfg_req * req,struct msg_rsp * rsp)467 int rvu_mbox_handler_nix_bp_disable(struct rvu *rvu,
468 				    struct nix_bp_cfg_req *req,
469 				    struct msg_rsp *rsp)
470 {
471 	u16 pcifunc = req->hdr.pcifunc;
472 	struct rvu_pfvf *pfvf;
473 	int blkaddr, pf, type;
474 	u16 chan_base, chan;
475 	u64 cfg;
476 
477 	pf = rvu_get_pf(pcifunc);
478 	type = is_afvf(pcifunc) ? NIX_INTF_TYPE_LBK : NIX_INTF_TYPE_CGX;
479 	if (!is_pf_cgxmapped(rvu, pf) && type != NIX_INTF_TYPE_LBK)
480 		return 0;
481 
482 	pfvf = rvu_get_pfvf(rvu, pcifunc);
483 	blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, pcifunc);
484 
485 	chan_base = pfvf->rx_chan_base + req->chan_base;
486 	for (chan = chan_base; chan < (chan_base + req->chan_cnt); chan++) {
487 		cfg = rvu_read64(rvu, blkaddr, NIX_AF_RX_CHANX_CFG(chan));
488 		rvu_write64(rvu, blkaddr, NIX_AF_RX_CHANX_CFG(chan),
489 			    cfg & ~BIT_ULL(16));
490 	}
491 	return 0;
492 }
493 
rvu_nix_get_bpid(struct rvu * rvu,struct nix_bp_cfg_req * req,int type,int chan_id)494 static int rvu_nix_get_bpid(struct rvu *rvu, struct nix_bp_cfg_req *req,
495 			    int type, int chan_id)
496 {
497 	int bpid, blkaddr, lmac_chan_cnt, sdp_chan_cnt;
498 	u16 cgx_bpid_cnt, lbk_bpid_cnt, sdp_bpid_cnt;
499 	struct rvu_hwinfo *hw = rvu->hw;
500 	struct rvu_pfvf *pfvf;
501 	u8 cgx_id, lmac_id;
502 	u64 cfg;
503 
504 	blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, req->hdr.pcifunc);
505 	cfg = rvu_read64(rvu, blkaddr, NIX_AF_CONST);
506 	lmac_chan_cnt = cfg & 0xFF;
507 
508 	cgx_bpid_cnt = hw->cgx_links * lmac_chan_cnt;
509 	lbk_bpid_cnt = hw->lbk_links * ((cfg >> 16) & 0xFF);
510 
511 	cfg = rvu_read64(rvu, blkaddr, NIX_AF_CONST1);
512 	sdp_chan_cnt = cfg & 0xFFF;
513 	sdp_bpid_cnt = hw->sdp_links * sdp_chan_cnt;
514 
515 	pfvf = rvu_get_pfvf(rvu, req->hdr.pcifunc);
516 
517 	/* Backpressure IDs range division
518 	 * CGX channles are mapped to (0 - 191) BPIDs
519 	 * LBK channles are mapped to (192 - 255) BPIDs
520 	 * SDP channles are mapped to (256 - 511) BPIDs
521 	 *
522 	 * Lmac channles and bpids mapped as follows
523 	 * cgx(0)_lmac(0)_chan(0 - 15) = bpid(0 - 15)
524 	 * cgx(0)_lmac(1)_chan(0 - 15) = bpid(16 - 31) ....
525 	 * cgx(1)_lmac(0)_chan(0 - 15) = bpid(64 - 79) ....
526 	 */
527 	switch (type) {
528 	case NIX_INTF_TYPE_CGX:
529 		if ((req->chan_base + req->chan_cnt) > 16)
530 			return -EINVAL;
531 		rvu_get_cgx_lmac_id(pfvf->cgx_lmac, &cgx_id, &lmac_id);
532 		/* Assign bpid based on cgx, lmac and chan id */
533 		bpid = (cgx_id * hw->lmac_per_cgx * lmac_chan_cnt) +
534 			(lmac_id * lmac_chan_cnt) + req->chan_base;
535 
536 		if (req->bpid_per_chan)
537 			bpid += chan_id;
538 		if (bpid > cgx_bpid_cnt)
539 			return -EINVAL;
540 		break;
541 
542 	case NIX_INTF_TYPE_LBK:
543 		if ((req->chan_base + req->chan_cnt) > 63)
544 			return -EINVAL;
545 		bpid = cgx_bpid_cnt + req->chan_base;
546 		if (req->bpid_per_chan)
547 			bpid += chan_id;
548 		if (bpid > (cgx_bpid_cnt + lbk_bpid_cnt))
549 			return -EINVAL;
550 		break;
551 	case NIX_INTF_TYPE_SDP:
552 		if ((req->chan_base + req->chan_cnt) > 255)
553 			return -EINVAL;
554 
555 		bpid = sdp_bpid_cnt + req->chan_base;
556 		if (req->bpid_per_chan)
557 			bpid += chan_id;
558 
559 		if (bpid > (cgx_bpid_cnt + lbk_bpid_cnt + sdp_bpid_cnt))
560 			return -EINVAL;
561 		break;
562 	default:
563 		return -EINVAL;
564 	}
565 	return bpid;
566 }
567 
rvu_mbox_handler_nix_bp_enable(struct rvu * rvu,struct nix_bp_cfg_req * req,struct nix_bp_cfg_rsp * rsp)568 int rvu_mbox_handler_nix_bp_enable(struct rvu *rvu,
569 				   struct nix_bp_cfg_req *req,
570 				   struct nix_bp_cfg_rsp *rsp)
571 {
572 	int blkaddr, pf, type, chan_id = 0;
573 	u16 pcifunc = req->hdr.pcifunc;
574 	struct rvu_pfvf *pfvf;
575 	u16 chan_base, chan;
576 	s16 bpid, bpid_base;
577 	u64 cfg;
578 
579 	pf = rvu_get_pf(pcifunc);
580 	type = is_afvf(pcifunc) ? NIX_INTF_TYPE_LBK : NIX_INTF_TYPE_CGX;
581 	if (is_sdp_pfvf(pcifunc))
582 		type = NIX_INTF_TYPE_SDP;
583 
584 	/* Enable backpressure only for CGX mapped PFs and LBK/SDP interface */
585 	if (!is_pf_cgxmapped(rvu, pf) && type != NIX_INTF_TYPE_LBK &&
586 	    type != NIX_INTF_TYPE_SDP)
587 		return 0;
588 
589 	pfvf = rvu_get_pfvf(rvu, pcifunc);
590 	blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, pcifunc);
591 
592 	bpid_base = rvu_nix_get_bpid(rvu, req, type, chan_id);
593 	chan_base = pfvf->rx_chan_base + req->chan_base;
594 	bpid = bpid_base;
595 
596 	for (chan = chan_base; chan < (chan_base + req->chan_cnt); chan++) {
597 		if (bpid < 0) {
598 			dev_warn(rvu->dev, "Fail to enable backpressure\n");
599 			return -EINVAL;
600 		}
601 
602 		cfg = rvu_read64(rvu, blkaddr, NIX_AF_RX_CHANX_CFG(chan));
603 		cfg &= ~GENMASK_ULL(8, 0);
604 		rvu_write64(rvu, blkaddr, NIX_AF_RX_CHANX_CFG(chan),
605 			    cfg | (bpid & GENMASK_ULL(8, 0)) | BIT_ULL(16));
606 		chan_id++;
607 		bpid = rvu_nix_get_bpid(rvu, req, type, chan_id);
608 	}
609 
610 	for (chan = 0; chan < req->chan_cnt; chan++) {
611 		/* Map channel and bpid assign to it */
612 		rsp->chan_bpid[chan] = ((req->chan_base + chan) & 0x7F) << 10 |
613 					(bpid_base & 0x3FF);
614 		if (req->bpid_per_chan)
615 			bpid_base++;
616 	}
617 	rsp->chan_cnt = req->chan_cnt;
618 
619 	return 0;
620 }
621 
nix_setup_lso_tso_l3(struct rvu * rvu,int blkaddr,u64 format,bool v4,u64 * fidx)622 static void nix_setup_lso_tso_l3(struct rvu *rvu, int blkaddr,
623 				 u64 format, bool v4, u64 *fidx)
624 {
625 	struct nix_lso_format field = {0};
626 
627 	/* IP's Length field */
628 	field.layer = NIX_TXLAYER_OL3;
629 	/* In ipv4, length field is at offset 2 bytes, for ipv6 it's 4 */
630 	field.offset = v4 ? 2 : 4;
631 	field.sizem1 = 1; /* i.e 2 bytes */
632 	field.alg = NIX_LSOALG_ADD_PAYLEN;
633 	rvu_write64(rvu, blkaddr,
634 		    NIX_AF_LSO_FORMATX_FIELDX(format, (*fidx)++),
635 		    *(u64 *)&field);
636 
637 	/* No ID field in IPv6 header */
638 	if (!v4)
639 		return;
640 
641 	/* IP's ID field */
642 	field.layer = NIX_TXLAYER_OL3;
643 	field.offset = 4;
644 	field.sizem1 = 1; /* i.e 2 bytes */
645 	field.alg = NIX_LSOALG_ADD_SEGNUM;
646 	rvu_write64(rvu, blkaddr,
647 		    NIX_AF_LSO_FORMATX_FIELDX(format, (*fidx)++),
648 		    *(u64 *)&field);
649 }
650 
nix_setup_lso_tso_l4(struct rvu * rvu,int blkaddr,u64 format,u64 * fidx)651 static void nix_setup_lso_tso_l4(struct rvu *rvu, int blkaddr,
652 				 u64 format, u64 *fidx)
653 {
654 	struct nix_lso_format field = {0};
655 
656 	/* TCP's sequence number field */
657 	field.layer = NIX_TXLAYER_OL4;
658 	field.offset = 4;
659 	field.sizem1 = 3; /* i.e 4 bytes */
660 	field.alg = NIX_LSOALG_ADD_OFFSET;
661 	rvu_write64(rvu, blkaddr,
662 		    NIX_AF_LSO_FORMATX_FIELDX(format, (*fidx)++),
663 		    *(u64 *)&field);
664 
665 	/* TCP's flags field */
666 	field.layer = NIX_TXLAYER_OL4;
667 	field.offset = 12;
668 	field.sizem1 = 1; /* 2 bytes */
669 	field.alg = NIX_LSOALG_TCP_FLAGS;
670 	rvu_write64(rvu, blkaddr,
671 		    NIX_AF_LSO_FORMATX_FIELDX(format, (*fidx)++),
672 		    *(u64 *)&field);
673 }
674 
nix_setup_lso(struct rvu * rvu,struct nix_hw * nix_hw,int blkaddr)675 static void nix_setup_lso(struct rvu *rvu, struct nix_hw *nix_hw, int blkaddr)
676 {
677 	u64 cfg, idx, fidx = 0;
678 
679 	/* Get max HW supported format indices */
680 	cfg = (rvu_read64(rvu, blkaddr, NIX_AF_CONST1) >> 48) & 0xFF;
681 	nix_hw->lso.total = cfg;
682 
683 	/* Enable LSO */
684 	cfg = rvu_read64(rvu, blkaddr, NIX_AF_LSO_CFG);
685 	/* For TSO, set first and middle segment flags to
686 	 * mask out PSH, RST & FIN flags in TCP packet
687 	 */
688 	cfg &= ~((0xFFFFULL << 32) | (0xFFFFULL << 16));
689 	cfg |= (0xFFF2ULL << 32) | (0xFFF2ULL << 16);
690 	rvu_write64(rvu, blkaddr, NIX_AF_LSO_CFG, cfg | BIT_ULL(63));
691 
692 	/* Setup default static LSO formats
693 	 *
694 	 * Configure format fields for TCPv4 segmentation offload
695 	 */
696 	idx = NIX_LSO_FORMAT_IDX_TSOV4;
697 	nix_setup_lso_tso_l3(rvu, blkaddr, idx, true, &fidx);
698 	nix_setup_lso_tso_l4(rvu, blkaddr, idx, &fidx);
699 
700 	/* Set rest of the fields to NOP */
701 	for (; fidx < 8; fidx++) {
702 		rvu_write64(rvu, blkaddr,
703 			    NIX_AF_LSO_FORMATX_FIELDX(idx, fidx), 0x0ULL);
704 	}
705 	nix_hw->lso.in_use++;
706 
707 	/* Configure format fields for TCPv6 segmentation offload */
708 	idx = NIX_LSO_FORMAT_IDX_TSOV6;
709 	fidx = 0;
710 	nix_setup_lso_tso_l3(rvu, blkaddr, idx, false, &fidx);
711 	nix_setup_lso_tso_l4(rvu, blkaddr, idx, &fidx);
712 
713 	/* Set rest of the fields to NOP */
714 	for (; fidx < 8; fidx++) {
715 		rvu_write64(rvu, blkaddr,
716 			    NIX_AF_LSO_FORMATX_FIELDX(idx, fidx), 0x0ULL);
717 	}
718 	nix_hw->lso.in_use++;
719 }
720 
nix_ctx_free(struct rvu * rvu,struct rvu_pfvf * pfvf)721 static void nix_ctx_free(struct rvu *rvu, struct rvu_pfvf *pfvf)
722 {
723 	kfree(pfvf->rq_bmap);
724 	kfree(pfvf->sq_bmap);
725 	kfree(pfvf->cq_bmap);
726 	if (pfvf->rq_ctx)
727 		qmem_free(rvu->dev, pfvf->rq_ctx);
728 	if (pfvf->sq_ctx)
729 		qmem_free(rvu->dev, pfvf->sq_ctx);
730 	if (pfvf->cq_ctx)
731 		qmem_free(rvu->dev, pfvf->cq_ctx);
732 	if (pfvf->rss_ctx)
733 		qmem_free(rvu->dev, pfvf->rss_ctx);
734 	if (pfvf->nix_qints_ctx)
735 		qmem_free(rvu->dev, pfvf->nix_qints_ctx);
736 	if (pfvf->cq_ints_ctx)
737 		qmem_free(rvu->dev, pfvf->cq_ints_ctx);
738 
739 	pfvf->rq_bmap = NULL;
740 	pfvf->cq_bmap = NULL;
741 	pfvf->sq_bmap = NULL;
742 	pfvf->rq_ctx = NULL;
743 	pfvf->sq_ctx = NULL;
744 	pfvf->cq_ctx = NULL;
745 	pfvf->rss_ctx = NULL;
746 	pfvf->nix_qints_ctx = NULL;
747 	pfvf->cq_ints_ctx = NULL;
748 }
749 
nixlf_rss_ctx_init(struct rvu * rvu,int blkaddr,struct rvu_pfvf * pfvf,int nixlf,int rss_sz,int rss_grps,int hwctx_size,u64 way_mask,bool tag_lsb_as_adder)750 static int nixlf_rss_ctx_init(struct rvu *rvu, int blkaddr,
751 			      struct rvu_pfvf *pfvf, int nixlf,
752 			      int rss_sz, int rss_grps, int hwctx_size,
753 			      u64 way_mask, bool tag_lsb_as_adder)
754 {
755 	int err, grp, num_indices;
756 	u64 val;
757 
758 	/* RSS is not requested for this NIXLF */
759 	if (!rss_sz)
760 		return 0;
761 	num_indices = rss_sz * rss_grps;
762 
763 	/* Alloc NIX RSS HW context memory and config the base */
764 	err = qmem_alloc(rvu->dev, &pfvf->rss_ctx, num_indices, hwctx_size);
765 	if (err)
766 		return err;
767 
768 	rvu_write64(rvu, blkaddr, NIX_AF_LFX_RSS_BASE(nixlf),
769 		    (u64)pfvf->rss_ctx->iova);
770 
771 	/* Config full RSS table size, enable RSS and caching */
772 	val = BIT_ULL(36) | BIT_ULL(4) | way_mask << 20 |
773 			ilog2(num_indices / MAX_RSS_INDIR_TBL_SIZE);
774 
775 	if (tag_lsb_as_adder)
776 		val |= BIT_ULL(5);
777 
778 	rvu_write64(rvu, blkaddr, NIX_AF_LFX_RSS_CFG(nixlf), val);
779 	/* Config RSS group offset and sizes */
780 	for (grp = 0; grp < rss_grps; grp++)
781 		rvu_write64(rvu, blkaddr, NIX_AF_LFX_RSS_GRPX(nixlf, grp),
782 			    ((ilog2(rss_sz) - 1) << 16) | (rss_sz * grp));
783 	return 0;
784 }
785 
nix_aq_enqueue_wait(struct rvu * rvu,struct rvu_block * block,struct nix_aq_inst_s * inst)786 static int nix_aq_enqueue_wait(struct rvu *rvu, struct rvu_block *block,
787 			       struct nix_aq_inst_s *inst)
788 {
789 	struct admin_queue *aq = block->aq;
790 	struct nix_aq_res_s *result;
791 	int timeout = 1000;
792 	u64 reg, head;
793 
794 	result = (struct nix_aq_res_s *)aq->res->base;
795 
796 	/* Get current head pointer where to append this instruction */
797 	reg = rvu_read64(rvu, block->addr, NIX_AF_AQ_STATUS);
798 	head = (reg >> 4) & AQ_PTR_MASK;
799 
800 	memcpy((void *)(aq->inst->base + (head * aq->inst->entry_sz)),
801 	       (void *)inst, aq->inst->entry_sz);
802 	memset(result, 0, sizeof(*result));
803 	/* sync into memory */
804 	wmb();
805 
806 	/* Ring the doorbell and wait for result */
807 	rvu_write64(rvu, block->addr, NIX_AF_AQ_DOOR, 1);
808 	while (result->compcode == NIX_AQ_COMP_NOTDONE) {
809 		cpu_relax();
810 		udelay(1);
811 		timeout--;
812 		if (!timeout)
813 			return -EBUSY;
814 	}
815 
816 	if (result->compcode != NIX_AQ_COMP_GOOD)
817 		/* TODO: Replace this with some error code */
818 		return -EBUSY;
819 
820 	return 0;
821 }
822 
rvu_nix_blk_aq_enq_inst(struct rvu * rvu,struct nix_hw * nix_hw,struct nix_aq_enq_req * req,struct nix_aq_enq_rsp * rsp)823 static int rvu_nix_blk_aq_enq_inst(struct rvu *rvu, struct nix_hw *nix_hw,
824 				   struct nix_aq_enq_req *req,
825 				   struct nix_aq_enq_rsp *rsp)
826 {
827 	struct rvu_hwinfo *hw = rvu->hw;
828 	u16 pcifunc = req->hdr.pcifunc;
829 	int nixlf, blkaddr, rc = 0;
830 	struct nix_aq_inst_s inst;
831 	struct rvu_block *block;
832 	struct admin_queue *aq;
833 	struct rvu_pfvf *pfvf;
834 	void *ctx, *mask;
835 	bool ena;
836 	u64 cfg;
837 
838 	blkaddr = nix_hw->blkaddr;
839 	block = &hw->block[blkaddr];
840 	aq = block->aq;
841 	if (!aq) {
842 		dev_warn(rvu->dev, "%s: NIX AQ not initialized\n", __func__);
843 		return NIX_AF_ERR_AQ_ENQUEUE;
844 	}
845 
846 	pfvf = rvu_get_pfvf(rvu, pcifunc);
847 	nixlf = rvu_get_lf(rvu, block, pcifunc, 0);
848 
849 	/* Skip NIXLF check for broadcast MCE entry and bandwidth profile
850 	 * operations done by AF itself.
851 	 */
852 	if (!((!rsp && req->ctype == NIX_AQ_CTYPE_MCE) ||
853 	      (req->ctype == NIX_AQ_CTYPE_BANDPROF && !pcifunc))) {
854 		if (!pfvf->nixlf || nixlf < 0)
855 			return NIX_AF_ERR_AF_LF_INVALID;
856 	}
857 
858 	switch (req->ctype) {
859 	case NIX_AQ_CTYPE_RQ:
860 		/* Check if index exceeds max no of queues */
861 		if (!pfvf->rq_ctx || req->qidx >= pfvf->rq_ctx->qsize)
862 			rc = NIX_AF_ERR_AQ_ENQUEUE;
863 		break;
864 	case NIX_AQ_CTYPE_SQ:
865 		if (!pfvf->sq_ctx || req->qidx >= pfvf->sq_ctx->qsize)
866 			rc = NIX_AF_ERR_AQ_ENQUEUE;
867 		break;
868 	case NIX_AQ_CTYPE_CQ:
869 		if (!pfvf->cq_ctx || req->qidx >= pfvf->cq_ctx->qsize)
870 			rc = NIX_AF_ERR_AQ_ENQUEUE;
871 		break;
872 	case NIX_AQ_CTYPE_RSS:
873 		/* Check if RSS is enabled and qidx is within range */
874 		cfg = rvu_read64(rvu, blkaddr, NIX_AF_LFX_RSS_CFG(nixlf));
875 		if (!(cfg & BIT_ULL(4)) || !pfvf->rss_ctx ||
876 		    (req->qidx >= (256UL << (cfg & 0xF))))
877 			rc = NIX_AF_ERR_AQ_ENQUEUE;
878 		break;
879 	case NIX_AQ_CTYPE_MCE:
880 		cfg = rvu_read64(rvu, blkaddr, NIX_AF_RX_MCAST_CFG);
881 
882 		/* Check if index exceeds MCE list length */
883 		if (!nix_hw->mcast.mce_ctx ||
884 		    (req->qidx >= (256UL << (cfg & 0xF))))
885 			rc = NIX_AF_ERR_AQ_ENQUEUE;
886 
887 		/* Adding multicast lists for requests from PF/VFs is not
888 		 * yet supported, so ignore this.
889 		 */
890 		if (rsp)
891 			rc = NIX_AF_ERR_AQ_ENQUEUE;
892 		break;
893 	case NIX_AQ_CTYPE_BANDPROF:
894 		if (nix_verify_bandprof((struct nix_cn10k_aq_enq_req *)req,
895 					nix_hw, pcifunc))
896 			rc = NIX_AF_ERR_INVALID_BANDPROF;
897 		break;
898 	default:
899 		rc = NIX_AF_ERR_AQ_ENQUEUE;
900 	}
901 
902 	if (rc)
903 		return rc;
904 
905 	/* Check if SQ pointed SMQ belongs to this PF/VF or not */
906 	if (req->ctype == NIX_AQ_CTYPE_SQ &&
907 	    ((req->op == NIX_AQ_INSTOP_INIT && req->sq.ena) ||
908 	     (req->op == NIX_AQ_INSTOP_WRITE &&
909 	      req->sq_mask.ena && req->sq_mask.smq && req->sq.ena))) {
910 		if (!is_valid_txschq(rvu, blkaddr, NIX_TXSCH_LVL_SMQ,
911 				     pcifunc, req->sq.smq))
912 			return NIX_AF_ERR_AQ_ENQUEUE;
913 	}
914 
915 	memset(&inst, 0, sizeof(struct nix_aq_inst_s));
916 	inst.lf = nixlf;
917 	inst.cindex = req->qidx;
918 	inst.ctype = req->ctype;
919 	inst.op = req->op;
920 	/* Currently we are not supporting enqueuing multiple instructions,
921 	 * so always choose first entry in result memory.
922 	 */
923 	inst.res_addr = (u64)aq->res->iova;
924 
925 	/* Hardware uses same aq->res->base for updating result of
926 	 * previous instruction hence wait here till it is done.
927 	 */
928 	spin_lock(&aq->lock);
929 
930 	/* Clean result + context memory */
931 	memset(aq->res->base, 0, aq->res->entry_sz);
932 	/* Context needs to be written at RES_ADDR + 128 */
933 	ctx = aq->res->base + 128;
934 	/* Mask needs to be written at RES_ADDR + 256 */
935 	mask = aq->res->base + 256;
936 
937 	switch (req->op) {
938 	case NIX_AQ_INSTOP_WRITE:
939 		if (req->ctype == NIX_AQ_CTYPE_RQ)
940 			memcpy(mask, &req->rq_mask,
941 			       sizeof(struct nix_rq_ctx_s));
942 		else if (req->ctype == NIX_AQ_CTYPE_SQ)
943 			memcpy(mask, &req->sq_mask,
944 			       sizeof(struct nix_sq_ctx_s));
945 		else if (req->ctype == NIX_AQ_CTYPE_CQ)
946 			memcpy(mask, &req->cq_mask,
947 			       sizeof(struct nix_cq_ctx_s));
948 		else if (req->ctype == NIX_AQ_CTYPE_RSS)
949 			memcpy(mask, &req->rss_mask,
950 			       sizeof(struct nix_rsse_s));
951 		else if (req->ctype == NIX_AQ_CTYPE_MCE)
952 			memcpy(mask, &req->mce_mask,
953 			       sizeof(struct nix_rx_mce_s));
954 		else if (req->ctype == NIX_AQ_CTYPE_BANDPROF)
955 			memcpy(mask, &req->prof_mask,
956 			       sizeof(struct nix_bandprof_s));
957 		fallthrough;
958 	case NIX_AQ_INSTOP_INIT:
959 		if (req->ctype == NIX_AQ_CTYPE_RQ)
960 			memcpy(ctx, &req->rq, sizeof(struct nix_rq_ctx_s));
961 		else if (req->ctype == NIX_AQ_CTYPE_SQ)
962 			memcpy(ctx, &req->sq, sizeof(struct nix_sq_ctx_s));
963 		else if (req->ctype == NIX_AQ_CTYPE_CQ)
964 			memcpy(ctx, &req->cq, sizeof(struct nix_cq_ctx_s));
965 		else if (req->ctype == NIX_AQ_CTYPE_RSS)
966 			memcpy(ctx, &req->rss, sizeof(struct nix_rsse_s));
967 		else if (req->ctype == NIX_AQ_CTYPE_MCE)
968 			memcpy(ctx, &req->mce, sizeof(struct nix_rx_mce_s));
969 		else if (req->ctype == NIX_AQ_CTYPE_BANDPROF)
970 			memcpy(ctx, &req->prof, sizeof(struct nix_bandprof_s));
971 		break;
972 	case NIX_AQ_INSTOP_NOP:
973 	case NIX_AQ_INSTOP_READ:
974 	case NIX_AQ_INSTOP_LOCK:
975 	case NIX_AQ_INSTOP_UNLOCK:
976 		break;
977 	default:
978 		rc = NIX_AF_ERR_AQ_ENQUEUE;
979 		spin_unlock(&aq->lock);
980 		return rc;
981 	}
982 
983 	/* Submit the instruction to AQ */
984 	rc = nix_aq_enqueue_wait(rvu, block, &inst);
985 	if (rc) {
986 		spin_unlock(&aq->lock);
987 		return rc;
988 	}
989 
990 	/* Set RQ/SQ/CQ bitmap if respective queue hw context is enabled */
991 	if (req->op == NIX_AQ_INSTOP_INIT) {
992 		if (req->ctype == NIX_AQ_CTYPE_RQ && req->rq.ena)
993 			__set_bit(req->qidx, pfvf->rq_bmap);
994 		if (req->ctype == NIX_AQ_CTYPE_SQ && req->sq.ena)
995 			__set_bit(req->qidx, pfvf->sq_bmap);
996 		if (req->ctype == NIX_AQ_CTYPE_CQ && req->cq.ena)
997 			__set_bit(req->qidx, pfvf->cq_bmap);
998 	}
999 
1000 	if (req->op == NIX_AQ_INSTOP_WRITE) {
1001 		if (req->ctype == NIX_AQ_CTYPE_RQ) {
1002 			ena = (req->rq.ena & req->rq_mask.ena) |
1003 				(test_bit(req->qidx, pfvf->rq_bmap) &
1004 				~req->rq_mask.ena);
1005 			if (ena)
1006 				__set_bit(req->qidx, pfvf->rq_bmap);
1007 			else
1008 				__clear_bit(req->qidx, pfvf->rq_bmap);
1009 		}
1010 		if (req->ctype == NIX_AQ_CTYPE_SQ) {
1011 			ena = (req->rq.ena & req->sq_mask.ena) |
1012 				(test_bit(req->qidx, pfvf->sq_bmap) &
1013 				~req->sq_mask.ena);
1014 			if (ena)
1015 				__set_bit(req->qidx, pfvf->sq_bmap);
1016 			else
1017 				__clear_bit(req->qidx, pfvf->sq_bmap);
1018 		}
1019 		if (req->ctype == NIX_AQ_CTYPE_CQ) {
1020 			ena = (req->rq.ena & req->cq_mask.ena) |
1021 				(test_bit(req->qidx, pfvf->cq_bmap) &
1022 				~req->cq_mask.ena);
1023 			if (ena)
1024 				__set_bit(req->qidx, pfvf->cq_bmap);
1025 			else
1026 				__clear_bit(req->qidx, pfvf->cq_bmap);
1027 		}
1028 	}
1029 
1030 	if (rsp) {
1031 		/* Copy read context into mailbox */
1032 		if (req->op == NIX_AQ_INSTOP_READ) {
1033 			if (req->ctype == NIX_AQ_CTYPE_RQ)
1034 				memcpy(&rsp->rq, ctx,
1035 				       sizeof(struct nix_rq_ctx_s));
1036 			else if (req->ctype == NIX_AQ_CTYPE_SQ)
1037 				memcpy(&rsp->sq, ctx,
1038 				       sizeof(struct nix_sq_ctx_s));
1039 			else if (req->ctype == NIX_AQ_CTYPE_CQ)
1040 				memcpy(&rsp->cq, ctx,
1041 				       sizeof(struct nix_cq_ctx_s));
1042 			else if (req->ctype == NIX_AQ_CTYPE_RSS)
1043 				memcpy(&rsp->rss, ctx,
1044 				       sizeof(struct nix_rsse_s));
1045 			else if (req->ctype == NIX_AQ_CTYPE_MCE)
1046 				memcpy(&rsp->mce, ctx,
1047 				       sizeof(struct nix_rx_mce_s));
1048 			else if (req->ctype == NIX_AQ_CTYPE_BANDPROF)
1049 				memcpy(&rsp->prof, ctx,
1050 				       sizeof(struct nix_bandprof_s));
1051 		}
1052 	}
1053 
1054 	spin_unlock(&aq->lock);
1055 	return 0;
1056 }
1057 
rvu_nix_verify_aq_ctx(struct rvu * rvu,struct nix_hw * nix_hw,struct nix_aq_enq_req * req,u8 ctype)1058 static int rvu_nix_verify_aq_ctx(struct rvu *rvu, struct nix_hw *nix_hw,
1059 				 struct nix_aq_enq_req *req, u8 ctype)
1060 {
1061 	struct nix_cn10k_aq_enq_req aq_req;
1062 	struct nix_cn10k_aq_enq_rsp aq_rsp;
1063 	int rc, word;
1064 
1065 	if (req->ctype != NIX_AQ_CTYPE_CQ)
1066 		return 0;
1067 
1068 	rc = nix_aq_context_read(rvu, nix_hw, &aq_req, &aq_rsp,
1069 				 req->hdr.pcifunc, ctype, req->qidx);
1070 	if (rc) {
1071 		dev_err(rvu->dev,
1072 			"%s: Failed to fetch %s%d context of PFFUNC 0x%x\n",
1073 			__func__, nix_get_ctx_name(ctype), req->qidx,
1074 			req->hdr.pcifunc);
1075 		return rc;
1076 	}
1077 
1078 	/* Make copy of original context & mask which are required
1079 	 * for resubmission
1080 	 */
1081 	memcpy(&aq_req.cq_mask, &req->cq_mask, sizeof(struct nix_cq_ctx_s));
1082 	memcpy(&aq_req.cq, &req->cq, sizeof(struct nix_cq_ctx_s));
1083 
1084 	/* exclude fields which HW can update */
1085 	aq_req.cq_mask.cq_err       = 0;
1086 	aq_req.cq_mask.wrptr        = 0;
1087 	aq_req.cq_mask.tail         = 0;
1088 	aq_req.cq_mask.head	    = 0;
1089 	aq_req.cq_mask.avg_level    = 0;
1090 	aq_req.cq_mask.update_time  = 0;
1091 	aq_req.cq_mask.substream    = 0;
1092 
1093 	/* Context mask (cq_mask) holds mask value of fields which
1094 	 * are changed in AQ WRITE operation.
1095 	 * for example cq.drop = 0xa;
1096 	 *	       cq_mask.drop = 0xff;
1097 	 * Below logic performs '&' between cq and cq_mask so that non
1098 	 * updated fields are masked out for request and response
1099 	 * comparison
1100 	 */
1101 	for (word = 0; word < sizeof(struct nix_cq_ctx_s) / sizeof(u64);
1102 	     word++) {
1103 		*(u64 *)((u8 *)&aq_rsp.cq + word * 8) &=
1104 			(*(u64 *)((u8 *)&aq_req.cq_mask + word * 8));
1105 		*(u64 *)((u8 *)&aq_req.cq + word * 8) &=
1106 			(*(u64 *)((u8 *)&aq_req.cq_mask + word * 8));
1107 	}
1108 
1109 	if (memcmp(&aq_req.cq, &aq_rsp.cq, sizeof(struct nix_cq_ctx_s)))
1110 		return NIX_AF_ERR_AQ_CTX_RETRY_WRITE;
1111 
1112 	return 0;
1113 }
1114 
rvu_nix_aq_enq_inst(struct rvu * rvu,struct nix_aq_enq_req * req,struct nix_aq_enq_rsp * rsp)1115 static int rvu_nix_aq_enq_inst(struct rvu *rvu, struct nix_aq_enq_req *req,
1116 			       struct nix_aq_enq_rsp *rsp)
1117 {
1118 	struct nix_hw *nix_hw;
1119 	int err, retries = 5;
1120 	int blkaddr;
1121 
1122 	blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, req->hdr.pcifunc);
1123 	if (blkaddr < 0)
1124 		return NIX_AF_ERR_AF_LF_INVALID;
1125 
1126 	nix_hw =  get_nix_hw(rvu->hw, blkaddr);
1127 	if (!nix_hw)
1128 		return NIX_AF_ERR_INVALID_NIXBLK;
1129 
1130 retry:
1131 	err = rvu_nix_blk_aq_enq_inst(rvu, nix_hw, req, rsp);
1132 
1133 	/* HW errata 'AQ Modification to CQ could be discarded on heavy traffic'
1134 	 * As a work around perfrom CQ context read after each AQ write. If AQ
1135 	 * read shows AQ write is not updated perform AQ write again.
1136 	 */
1137 	if (!err && req->op == NIX_AQ_INSTOP_WRITE) {
1138 		err = rvu_nix_verify_aq_ctx(rvu, nix_hw, req, NIX_AQ_CTYPE_CQ);
1139 		if (err == NIX_AF_ERR_AQ_CTX_RETRY_WRITE) {
1140 			if (retries--)
1141 				goto retry;
1142 			else
1143 				return NIX_AF_ERR_CQ_CTX_WRITE_ERR;
1144 		}
1145 	}
1146 
1147 	return err;
1148 }
1149 
nix_get_ctx_name(int ctype)1150 static const char *nix_get_ctx_name(int ctype)
1151 {
1152 	switch (ctype) {
1153 	case NIX_AQ_CTYPE_CQ:
1154 		return "CQ";
1155 	case NIX_AQ_CTYPE_SQ:
1156 		return "SQ";
1157 	case NIX_AQ_CTYPE_RQ:
1158 		return "RQ";
1159 	case NIX_AQ_CTYPE_RSS:
1160 		return "RSS";
1161 	}
1162 	return "";
1163 }
1164 
nix_lf_hwctx_disable(struct rvu * rvu,struct hwctx_disable_req * req)1165 static int nix_lf_hwctx_disable(struct rvu *rvu, struct hwctx_disable_req *req)
1166 {
1167 	struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, req->hdr.pcifunc);
1168 	struct nix_aq_enq_req aq_req;
1169 	unsigned long *bmap;
1170 	int qidx, q_cnt = 0;
1171 	int err = 0, rc;
1172 
1173 	if (!pfvf->cq_ctx || !pfvf->sq_ctx || !pfvf->rq_ctx)
1174 		return NIX_AF_ERR_AQ_ENQUEUE;
1175 
1176 	memset(&aq_req, 0, sizeof(struct nix_aq_enq_req));
1177 	aq_req.hdr.pcifunc = req->hdr.pcifunc;
1178 
1179 	if (req->ctype == NIX_AQ_CTYPE_CQ) {
1180 		aq_req.cq.ena = 0;
1181 		aq_req.cq_mask.ena = 1;
1182 		aq_req.cq.bp_ena = 0;
1183 		aq_req.cq_mask.bp_ena = 1;
1184 		q_cnt = pfvf->cq_ctx->qsize;
1185 		bmap = pfvf->cq_bmap;
1186 	}
1187 	if (req->ctype == NIX_AQ_CTYPE_SQ) {
1188 		aq_req.sq.ena = 0;
1189 		aq_req.sq_mask.ena = 1;
1190 		q_cnt = pfvf->sq_ctx->qsize;
1191 		bmap = pfvf->sq_bmap;
1192 	}
1193 	if (req->ctype == NIX_AQ_CTYPE_RQ) {
1194 		aq_req.rq.ena = 0;
1195 		aq_req.rq_mask.ena = 1;
1196 		q_cnt = pfvf->rq_ctx->qsize;
1197 		bmap = pfvf->rq_bmap;
1198 	}
1199 
1200 	aq_req.ctype = req->ctype;
1201 	aq_req.op = NIX_AQ_INSTOP_WRITE;
1202 
1203 	for (qidx = 0; qidx < q_cnt; qidx++) {
1204 		if (!test_bit(qidx, bmap))
1205 			continue;
1206 		aq_req.qidx = qidx;
1207 		rc = rvu_nix_aq_enq_inst(rvu, &aq_req, NULL);
1208 		if (rc) {
1209 			err = rc;
1210 			dev_err(rvu->dev, "Failed to disable %s:%d context\n",
1211 				nix_get_ctx_name(req->ctype), qidx);
1212 		}
1213 	}
1214 
1215 	return err;
1216 }
1217 
1218 #ifdef CONFIG_NDC_DIS_DYNAMIC_CACHING
nix_lf_hwctx_lockdown(struct rvu * rvu,struct nix_aq_enq_req * req)1219 static int nix_lf_hwctx_lockdown(struct rvu *rvu, struct nix_aq_enq_req *req)
1220 {
1221 	struct nix_aq_enq_req lock_ctx_req;
1222 	int err;
1223 
1224 	if (req->op != NIX_AQ_INSTOP_INIT)
1225 		return 0;
1226 
1227 	if (req->ctype == NIX_AQ_CTYPE_MCE ||
1228 	    req->ctype == NIX_AQ_CTYPE_DYNO)
1229 		return 0;
1230 
1231 	memset(&lock_ctx_req, 0, sizeof(struct nix_aq_enq_req));
1232 	lock_ctx_req.hdr.pcifunc = req->hdr.pcifunc;
1233 	lock_ctx_req.ctype = req->ctype;
1234 	lock_ctx_req.op = NIX_AQ_INSTOP_LOCK;
1235 	lock_ctx_req.qidx = req->qidx;
1236 	err = rvu_nix_aq_enq_inst(rvu, &lock_ctx_req, NULL);
1237 	if (err)
1238 		dev_err(rvu->dev,
1239 			"PFUNC 0x%x: Failed to lock NIX %s:%d context\n",
1240 			req->hdr.pcifunc,
1241 			nix_get_ctx_name(req->ctype), req->qidx);
1242 	return err;
1243 }
1244 
rvu_mbox_handler_nix_aq_enq(struct rvu * rvu,struct nix_aq_enq_req * req,struct nix_aq_enq_rsp * rsp)1245 int rvu_mbox_handler_nix_aq_enq(struct rvu *rvu,
1246 				struct nix_aq_enq_req *req,
1247 				struct nix_aq_enq_rsp *rsp)
1248 {
1249 	int err;
1250 
1251 	err = rvu_nix_aq_enq_inst(rvu, req, rsp);
1252 	if (!err)
1253 		err = nix_lf_hwctx_lockdown(rvu, req);
1254 	return err;
1255 }
1256 #else
1257 
rvu_mbox_handler_nix_aq_enq(struct rvu * rvu,struct nix_aq_enq_req * req,struct nix_aq_enq_rsp * rsp)1258 int rvu_mbox_handler_nix_aq_enq(struct rvu *rvu,
1259 				struct nix_aq_enq_req *req,
1260 				struct nix_aq_enq_rsp *rsp)
1261 {
1262 	return rvu_nix_aq_enq_inst(rvu, req, rsp);
1263 }
1264 #endif
1265 /* CN10K mbox handler */
rvu_mbox_handler_nix_cn10k_aq_enq(struct rvu * rvu,struct nix_cn10k_aq_enq_req * req,struct nix_cn10k_aq_enq_rsp * rsp)1266 int rvu_mbox_handler_nix_cn10k_aq_enq(struct rvu *rvu,
1267 				      struct nix_cn10k_aq_enq_req *req,
1268 				      struct nix_cn10k_aq_enq_rsp *rsp)
1269 {
1270 	return rvu_nix_aq_enq_inst(rvu, (struct nix_aq_enq_req *)req,
1271 				  (struct nix_aq_enq_rsp *)rsp);
1272 }
1273 
rvu_mbox_handler_nix_hwctx_disable(struct rvu * rvu,struct hwctx_disable_req * req,struct msg_rsp * rsp)1274 int rvu_mbox_handler_nix_hwctx_disable(struct rvu *rvu,
1275 				       struct hwctx_disable_req *req,
1276 				       struct msg_rsp *rsp)
1277 {
1278 	return nix_lf_hwctx_disable(rvu, req);
1279 }
1280 
rvu_mbox_handler_nix_lf_alloc(struct rvu * rvu,struct nix_lf_alloc_req * req,struct nix_lf_alloc_rsp * rsp)1281 int rvu_mbox_handler_nix_lf_alloc(struct rvu *rvu,
1282 				  struct nix_lf_alloc_req *req,
1283 				  struct nix_lf_alloc_rsp *rsp)
1284 {
1285 	int nixlf, qints, hwctx_size, intf, err, rc = 0;
1286 	struct rvu_hwinfo *hw = rvu->hw;
1287 	u16 pcifunc = req->hdr.pcifunc;
1288 	struct rvu_block *block;
1289 	struct rvu_pfvf *pfvf;
1290 	u64 cfg, ctx_cfg;
1291 	int blkaddr;
1292 
1293 	if (!req->rq_cnt || !req->sq_cnt || !req->cq_cnt)
1294 		return NIX_AF_ERR_PARAM;
1295 
1296 	if (req->way_mask)
1297 		req->way_mask &= 0xFFFF;
1298 
1299 	pfvf = rvu_get_pfvf(rvu, pcifunc);
1300 	blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, pcifunc);
1301 	if (!pfvf->nixlf || blkaddr < 0)
1302 		return NIX_AF_ERR_AF_LF_INVALID;
1303 
1304 	block = &hw->block[blkaddr];
1305 	nixlf = rvu_get_lf(rvu, block, pcifunc, 0);
1306 	if (nixlf < 0)
1307 		return NIX_AF_ERR_AF_LF_INVALID;
1308 
1309 	/* Check if requested 'NIXLF <=> NPALF' mapping is valid */
1310 	if (req->npa_func) {
1311 		/* If default, use 'this' NIXLF's PFFUNC */
1312 		if (req->npa_func == RVU_DEFAULT_PF_FUNC)
1313 			req->npa_func = pcifunc;
1314 		if (!is_pffunc_map_valid(rvu, req->npa_func, BLKTYPE_NPA))
1315 			return NIX_AF_INVAL_NPA_PF_FUNC;
1316 	}
1317 
1318 	/* Check if requested 'NIXLF <=> SSOLF' mapping is valid */
1319 	if (req->sso_func) {
1320 		/* If default, use 'this' NIXLF's PFFUNC */
1321 		if (req->sso_func == RVU_DEFAULT_PF_FUNC)
1322 			req->sso_func = pcifunc;
1323 		if (!is_pffunc_map_valid(rvu, req->sso_func, BLKTYPE_SSO))
1324 			return NIX_AF_INVAL_SSO_PF_FUNC;
1325 	}
1326 
1327 	/* If RSS is being enabled, check if requested config is valid.
1328 	 * RSS table size should be power of two, otherwise
1329 	 * RSS_GRP::OFFSET + adder might go beyond that group or
1330 	 * won't be able to use entire table.
1331 	 */
1332 	if (req->rss_sz && (req->rss_sz > MAX_RSS_INDIR_TBL_SIZE ||
1333 			    !is_power_of_2(req->rss_sz)))
1334 		return NIX_AF_ERR_RSS_SIZE_INVALID;
1335 
1336 	if (req->rss_sz &&
1337 	    (!req->rss_grps || req->rss_grps > MAX_RSS_GROUPS))
1338 		return NIX_AF_ERR_RSS_GRPS_INVALID;
1339 
1340 	/* Reset this NIX LF */
1341 	err = rvu_lf_reset(rvu, block, nixlf);
1342 	if (err) {
1343 		dev_err(rvu->dev, "Failed to reset NIX%d LF%d\n",
1344 			block->addr - BLKADDR_NIX0, nixlf);
1345 		return NIX_AF_ERR_LF_RESET;
1346 	}
1347 
1348 	ctx_cfg = rvu_read64(rvu, blkaddr, NIX_AF_CONST3);
1349 
1350 	/* Alloc NIX RQ HW context memory and config the base */
1351 	hwctx_size = 1UL << ((ctx_cfg >> 4) & 0xF);
1352 	err = qmem_alloc(rvu->dev, &pfvf->rq_ctx, req->rq_cnt, hwctx_size);
1353 	if (err)
1354 		goto free_mem;
1355 
1356 	pfvf->rq_bmap = kcalloc(req->rq_cnt, sizeof(long), GFP_KERNEL);
1357 	if (!pfvf->rq_bmap)
1358 		goto free_mem;
1359 
1360 	rvu_write64(rvu, blkaddr, NIX_AF_LFX_RQS_BASE(nixlf),
1361 		    (u64)pfvf->rq_ctx->iova);
1362 
1363 	/* Set caching and queue count in HW */
1364 	cfg = BIT_ULL(36) | (req->rq_cnt - 1) | req->way_mask << 20;
1365 	rvu_write64(rvu, blkaddr, NIX_AF_LFX_RQS_CFG(nixlf), cfg);
1366 
1367 	/* Alloc NIX SQ HW context memory and config the base */
1368 	hwctx_size = 1UL << (ctx_cfg & 0xF);
1369 	err = qmem_alloc(rvu->dev, &pfvf->sq_ctx, req->sq_cnt, hwctx_size);
1370 	if (err)
1371 		goto free_mem;
1372 
1373 	pfvf->sq_bmap = kcalloc(req->sq_cnt, sizeof(long), GFP_KERNEL);
1374 	if (!pfvf->sq_bmap)
1375 		goto free_mem;
1376 
1377 	rvu_write64(rvu, blkaddr, NIX_AF_LFX_SQS_BASE(nixlf),
1378 		    (u64)pfvf->sq_ctx->iova);
1379 
1380 	cfg = BIT_ULL(36) | (req->sq_cnt - 1) | req->way_mask << 20;
1381 	rvu_write64(rvu, blkaddr, NIX_AF_LFX_SQS_CFG(nixlf), cfg);
1382 
1383 	/* Alloc NIX CQ HW context memory and config the base */
1384 	hwctx_size = 1UL << ((ctx_cfg >> 8) & 0xF);
1385 	err = qmem_alloc(rvu->dev, &pfvf->cq_ctx, req->cq_cnt, hwctx_size);
1386 	if (err)
1387 		goto free_mem;
1388 
1389 	pfvf->cq_bmap = kcalloc(req->cq_cnt, sizeof(long), GFP_KERNEL);
1390 	if (!pfvf->cq_bmap)
1391 		goto free_mem;
1392 
1393 	rvu_write64(rvu, blkaddr, NIX_AF_LFX_CQS_BASE(nixlf),
1394 		    (u64)pfvf->cq_ctx->iova);
1395 
1396 	cfg = BIT_ULL(36) | (req->cq_cnt - 1) | req->way_mask << 20;
1397 	rvu_write64(rvu, blkaddr, NIX_AF_LFX_CQS_CFG(nixlf), cfg);
1398 
1399 	/* Initialize receive side scaling (RSS) */
1400 	hwctx_size = 1UL << ((ctx_cfg >> 12) & 0xF);
1401 	err = nixlf_rss_ctx_init(rvu, blkaddr, pfvf, nixlf, req->rss_sz,
1402 				 req->rss_grps, hwctx_size, req->way_mask,
1403 				 !!(req->flags & NIX_LF_RSS_TAG_LSB_AS_ADDER));
1404 	if (err)
1405 		goto free_mem;
1406 
1407 	/* Alloc memory for CQINT's HW contexts */
1408 	cfg = rvu_read64(rvu, blkaddr, NIX_AF_CONST2);
1409 	qints = (cfg >> 24) & 0xFFF;
1410 	hwctx_size = 1UL << ((ctx_cfg >> 24) & 0xF);
1411 	err = qmem_alloc(rvu->dev, &pfvf->cq_ints_ctx, qints, hwctx_size);
1412 	if (err)
1413 		goto free_mem;
1414 
1415 	rvu_write64(rvu, blkaddr, NIX_AF_LFX_CINTS_BASE(nixlf),
1416 		    (u64)pfvf->cq_ints_ctx->iova);
1417 
1418 	rvu_write64(rvu, blkaddr, NIX_AF_LFX_CINTS_CFG(nixlf),
1419 		    BIT_ULL(36) | req->way_mask << 20);
1420 
1421 	/* Alloc memory for QINT's HW contexts */
1422 	cfg = rvu_read64(rvu, blkaddr, NIX_AF_CONST2);
1423 	qints = (cfg >> 12) & 0xFFF;
1424 	hwctx_size = 1UL << ((ctx_cfg >> 20) & 0xF);
1425 	err = qmem_alloc(rvu->dev, &pfvf->nix_qints_ctx, qints, hwctx_size);
1426 	if (err)
1427 		goto free_mem;
1428 
1429 	rvu_write64(rvu, blkaddr, NIX_AF_LFX_QINTS_BASE(nixlf),
1430 		    (u64)pfvf->nix_qints_ctx->iova);
1431 	rvu_write64(rvu, blkaddr, NIX_AF_LFX_QINTS_CFG(nixlf),
1432 		    BIT_ULL(36) | req->way_mask << 20);
1433 
1434 	/* Setup VLANX TPID's.
1435 	 * Use VLAN1 for 802.1Q
1436 	 * and VLAN0 for 802.1AD.
1437 	 */
1438 	cfg = (0x8100ULL << 16) | 0x88A8ULL;
1439 	rvu_write64(rvu, blkaddr, NIX_AF_LFX_TX_CFG(nixlf), cfg);
1440 
1441 	/* Enable LMTST for this NIX LF */
1442 	rvu_write64(rvu, blkaddr, NIX_AF_LFX_TX_CFG2(nixlf), BIT_ULL(0));
1443 
1444 	/* Set CQE/WQE size, NPA_PF_FUNC for SQBs and also SSO_PF_FUNC */
1445 	if (req->npa_func)
1446 		cfg = req->npa_func;
1447 	if (req->sso_func)
1448 		cfg |= (u64)req->sso_func << 16;
1449 
1450 	cfg |= (u64)req->xqe_sz << 33;
1451 	rvu_write64(rvu, blkaddr, NIX_AF_LFX_CFG(nixlf), cfg);
1452 
1453 	/* Config Rx pkt length, csum checks and apad  enable / disable */
1454 	rvu_write64(rvu, blkaddr, NIX_AF_LFX_RX_CFG(nixlf), req->rx_cfg);
1455 
1456 	/* Configure pkind for TX parse config */
1457 	cfg = NPC_TX_DEF_PKIND;
1458 	rvu_write64(rvu, blkaddr, NIX_AF_LFX_TX_PARSE_CFG(nixlf), cfg);
1459 
1460 	intf = is_afvf(pcifunc) ? NIX_INTF_TYPE_LBK : NIX_INTF_TYPE_CGX;
1461 	if (is_sdp_pfvf(pcifunc))
1462 		intf = NIX_INTF_TYPE_SDP;
1463 
1464 	err = nix_interface_init(rvu, pcifunc, intf, nixlf, rsp,
1465 				 !!(req->flags & NIX_LF_LBK_BLK_SEL));
1466 	if (err)
1467 		goto free_mem;
1468 
1469 	/* Disable NPC entries as NIXLF's contexts are not initialized yet */
1470 	rvu_npc_disable_default_entries(rvu, pcifunc, nixlf);
1471 
1472 	/* Configure RX VTAG Type 7 (strip) for vf vlan */
1473 	rvu_write64(rvu, blkaddr,
1474 		    NIX_AF_LFX_RX_VTAG_TYPEX(nixlf, NIX_AF_LFX_RX_VTAG_TYPE7),
1475 		    VTAGSIZE_T4 | VTAG_STRIP);
1476 
1477 	goto exit;
1478 
1479 free_mem:
1480 	nix_ctx_free(rvu, pfvf);
1481 	rc = -ENOMEM;
1482 
1483 exit:
1484 	/* Set macaddr of this PF/VF */
1485 	ether_addr_copy(rsp->mac_addr, pfvf->mac_addr);
1486 
1487 	/* set SQB size info */
1488 	cfg = rvu_read64(rvu, blkaddr, NIX_AF_SQ_CONST);
1489 	rsp->sqb_size = (cfg >> 34) & 0xFFFF;
1490 	rsp->rx_chan_base = pfvf->rx_chan_base;
1491 	rsp->tx_chan_base = pfvf->tx_chan_base;
1492 	rsp->rx_chan_cnt = pfvf->rx_chan_cnt;
1493 	rsp->tx_chan_cnt = pfvf->tx_chan_cnt;
1494 	rsp->lso_tsov4_idx = NIX_LSO_FORMAT_IDX_TSOV4;
1495 	rsp->lso_tsov6_idx = NIX_LSO_FORMAT_IDX_TSOV6;
1496 	/* Get HW supported stat count */
1497 	cfg = rvu_read64(rvu, blkaddr, NIX_AF_CONST1);
1498 	rsp->lf_rx_stats = ((cfg >> 32) & 0xFF);
1499 	rsp->lf_tx_stats = ((cfg >> 24) & 0xFF);
1500 	/* Get count of CQ IRQs and error IRQs supported per LF */
1501 	cfg = rvu_read64(rvu, blkaddr, NIX_AF_CONST2);
1502 	rsp->qints = ((cfg >> 12) & 0xFFF);
1503 	rsp->cints = ((cfg >> 24) & 0xFFF);
1504 	rsp->cgx_links = hw->cgx_links;
1505 	rsp->lbk_links = hw->lbk_links;
1506 	rsp->sdp_links = hw->sdp_links;
1507 
1508 	return rc;
1509 }
1510 
rvu_mbox_handler_nix_lf_free(struct rvu * rvu,struct nix_lf_free_req * req,struct msg_rsp * rsp)1511 int rvu_mbox_handler_nix_lf_free(struct rvu *rvu, struct nix_lf_free_req *req,
1512 				 struct msg_rsp *rsp)
1513 {
1514 	struct rvu_hwinfo *hw = rvu->hw;
1515 	u16 pcifunc = req->hdr.pcifunc;
1516 	struct rvu_block *block;
1517 	int blkaddr, nixlf, err;
1518 	struct rvu_pfvf *pfvf;
1519 
1520 	pfvf = rvu_get_pfvf(rvu, pcifunc);
1521 	blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, pcifunc);
1522 	if (!pfvf->nixlf || blkaddr < 0)
1523 		return NIX_AF_ERR_AF_LF_INVALID;
1524 
1525 	block = &hw->block[blkaddr];
1526 	nixlf = rvu_get_lf(rvu, block, pcifunc, 0);
1527 	if (nixlf < 0)
1528 		return NIX_AF_ERR_AF_LF_INVALID;
1529 
1530 	if (req->flags & NIX_LF_DISABLE_FLOWS)
1531 		rvu_npc_disable_mcam_entries(rvu, pcifunc, nixlf);
1532 	else
1533 		rvu_npc_free_mcam_entries(rvu, pcifunc, nixlf);
1534 
1535 	/* Free any tx vtag def entries used by this NIX LF */
1536 	if (!(req->flags & NIX_LF_DONT_FREE_TX_VTAG))
1537 		nix_free_tx_vtag_entries(rvu, pcifunc);
1538 
1539 	nix_interface_deinit(rvu, pcifunc, nixlf);
1540 
1541 	/* Reset this NIX LF */
1542 	err = rvu_lf_reset(rvu, block, nixlf);
1543 	if (err) {
1544 		dev_err(rvu->dev, "Failed to reset NIX%d LF%d\n",
1545 			block->addr - BLKADDR_NIX0, nixlf);
1546 		return NIX_AF_ERR_LF_RESET;
1547 	}
1548 
1549 	nix_ctx_free(rvu, pfvf);
1550 
1551 	return 0;
1552 }
1553 
rvu_mbox_handler_nix_mark_format_cfg(struct rvu * rvu,struct nix_mark_format_cfg * req,struct nix_mark_format_cfg_rsp * rsp)1554 int rvu_mbox_handler_nix_mark_format_cfg(struct rvu *rvu,
1555 					 struct nix_mark_format_cfg  *req,
1556 					 struct nix_mark_format_cfg_rsp *rsp)
1557 {
1558 	u16 pcifunc = req->hdr.pcifunc;
1559 	struct nix_hw *nix_hw;
1560 	struct rvu_pfvf *pfvf;
1561 	int blkaddr, rc;
1562 	u32 cfg;
1563 
1564 	pfvf = rvu_get_pfvf(rvu, pcifunc);
1565 	blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, pcifunc);
1566 	if (!pfvf->nixlf || blkaddr < 0)
1567 		return NIX_AF_ERR_AF_LF_INVALID;
1568 
1569 	nix_hw = get_nix_hw(rvu->hw, blkaddr);
1570 	if (!nix_hw)
1571 		return NIX_AF_ERR_INVALID_NIXBLK;
1572 
1573 	cfg = (((u32)req->offset & 0x7) << 16) |
1574 	      (((u32)req->y_mask & 0xF) << 12) |
1575 	      (((u32)req->y_val & 0xF) << 8) |
1576 	      (((u32)req->r_mask & 0xF) << 4) | ((u32)req->r_val & 0xF);
1577 
1578 	rc = rvu_nix_reserve_mark_format(rvu, nix_hw, blkaddr, cfg);
1579 	if (rc < 0) {
1580 		dev_err(rvu->dev, "No mark_format_ctl for (pf:%d, vf:%d)",
1581 			rvu_get_pf(pcifunc), pcifunc & RVU_PFVF_FUNC_MASK);
1582 		return NIX_AF_ERR_MARK_CFG_FAIL;
1583 	}
1584 
1585 	rsp->mark_format_idx = rc;
1586 	return 0;
1587 }
1588 
1589 /* Handle shaper update specially for few revisions */
1590 static bool
handle_txschq_shaper_update(struct rvu * rvu,int blkaddr,int nixlf,int lvl,u64 reg,u64 regval)1591 handle_txschq_shaper_update(struct rvu *rvu, int blkaddr, int nixlf,
1592 			    int lvl, u64 reg, u64 regval)
1593 {
1594 	u64 regbase, oldval, sw_xoff = 0;
1595 	u64 dbgval, md_debug0 = 0;
1596 	unsigned long poll_tmo;
1597 	bool rate_reg = 0;
1598 	u32 schq;
1599 
1600 	regbase = reg & 0xFFFF;
1601 	schq = TXSCHQ_IDX(reg, TXSCHQ_IDX_SHIFT);
1602 
1603 	/* Check for rate register */
1604 	switch (lvl) {
1605 	case NIX_TXSCH_LVL_TL1:
1606 		md_debug0 = NIX_AF_TL1X_MD_DEBUG0(schq);
1607 		sw_xoff = NIX_AF_TL1X_SW_XOFF(schq);
1608 
1609 		rate_reg = !!(regbase == NIX_AF_TL1X_CIR(0));
1610 		break;
1611 	case NIX_TXSCH_LVL_TL2:
1612 		md_debug0 = NIX_AF_TL2X_MD_DEBUG0(schq);
1613 		sw_xoff = NIX_AF_TL2X_SW_XOFF(schq);
1614 
1615 		rate_reg = (regbase == NIX_AF_TL2X_CIR(0) ||
1616 			    regbase == NIX_AF_TL2X_PIR(0));
1617 		break;
1618 	case NIX_TXSCH_LVL_TL3:
1619 		md_debug0 = NIX_AF_TL3X_MD_DEBUG0(schq);
1620 		sw_xoff = NIX_AF_TL3X_SW_XOFF(schq);
1621 
1622 		rate_reg = (regbase == NIX_AF_TL3X_CIR(0) ||
1623 			    regbase == NIX_AF_TL3X_PIR(0));
1624 		break;
1625 	case NIX_TXSCH_LVL_TL4:
1626 		md_debug0 = NIX_AF_TL4X_MD_DEBUG0(schq);
1627 		sw_xoff = NIX_AF_TL4X_SW_XOFF(schq);
1628 
1629 		rate_reg = (regbase == NIX_AF_TL4X_CIR(0) ||
1630 			    regbase == NIX_AF_TL4X_PIR(0));
1631 		break;
1632 	case NIX_TXSCH_LVL_MDQ:
1633 		sw_xoff = NIX_AF_MDQX_SW_XOFF(schq);
1634 		rate_reg = (regbase == NIX_AF_MDQX_CIR(0) ||
1635 			    regbase == NIX_AF_MDQX_PIR(0));
1636 		break;
1637 	}
1638 
1639 	if (!rate_reg)
1640 		return false;
1641 
1642 	/* Nothing special to do when state is not toggled */
1643 	oldval = rvu_read64(rvu, blkaddr, reg);
1644 	if ((oldval & 0x1) == (regval & 0x1)) {
1645 		rvu_write64(rvu, blkaddr, reg, regval);
1646 		return true;
1647 	}
1648 
1649 	/* PIR/CIR disable */
1650 	if (!(regval & 0x1)) {
1651 		rvu_write64(rvu, blkaddr, sw_xoff, 1);
1652 		rvu_write64(rvu, blkaddr, reg, 0);
1653 		udelay(4);
1654 		rvu_write64(rvu, blkaddr, sw_xoff, 0);
1655 		return true;
1656 	}
1657 
1658 	/* PIR/CIR enable */
1659 	rvu_write64(rvu, blkaddr, sw_xoff, 1);
1660 	if (md_debug0) {
1661 		poll_tmo = jiffies + usecs_to_jiffies(10000);
1662 		/* Wait until VLD(bit32) == 1 or C_CON(bit48) == 0 */
1663 		do {
1664 			if (time_after(jiffies, poll_tmo)) {
1665 				dev_err(rvu->dev,
1666 					"NIXLF%d: TLX%u(lvl %u) CIR/PIR enable failed\n",
1667 					nixlf, schq, lvl);
1668 				goto exit;
1669 			}
1670 			usleep_range(1, 5);
1671 			dbgval = rvu_read64(rvu, blkaddr, md_debug0);
1672 		} while (!(dbgval & BIT_ULL(32)) && (dbgval & BIT_ULL(48)));
1673 	}
1674 	rvu_write64(rvu, blkaddr, reg, regval);
1675 exit:
1676 	rvu_write64(rvu, blkaddr, sw_xoff, 0);
1677 	return true;
1678 }
1679 
1680 /* Disable shaping of pkts by a scheduler queue
1681  * at a given scheduler level.
1682  */
nix_reset_tx_shaping(struct rvu * rvu,int blkaddr,int nixlf,int lvl,int schq)1683 static void nix_reset_tx_shaping(struct rvu *rvu, int blkaddr,
1684 				 int nixlf, int lvl, int schq)
1685 {
1686 	struct rvu_hwinfo *hw = rvu->hw;
1687 	u64  cir_reg = 0, pir_reg = 0;
1688 	u64  cfg;
1689 
1690 	switch (lvl) {
1691 	case NIX_TXSCH_LVL_TL1:
1692 		cir_reg = NIX_AF_TL1X_CIR(schq);
1693 		pir_reg = 0; /* PIR not available at TL1 */
1694 		break;
1695 	case NIX_TXSCH_LVL_TL2:
1696 		cir_reg = NIX_AF_TL2X_CIR(schq);
1697 		pir_reg = NIX_AF_TL2X_PIR(schq);
1698 		break;
1699 	case NIX_TXSCH_LVL_TL3:
1700 		cir_reg = NIX_AF_TL3X_CIR(schq);
1701 		pir_reg = NIX_AF_TL3X_PIR(schq);
1702 		break;
1703 	case NIX_TXSCH_LVL_TL4:
1704 		cir_reg = NIX_AF_TL4X_CIR(schq);
1705 		pir_reg = NIX_AF_TL4X_PIR(schq);
1706 		break;
1707 	case NIX_TXSCH_LVL_MDQ:
1708 		cir_reg = NIX_AF_MDQX_CIR(schq);
1709 		pir_reg = NIX_AF_MDQX_PIR(schq);
1710 		break;
1711 	}
1712 
1713 	/* Shaper state toggle needs wait/poll */
1714 	if (hw->cap.nix_shaper_toggle_wait) {
1715 		if (cir_reg)
1716 			handle_txschq_shaper_update(rvu, blkaddr, nixlf,
1717 						    lvl, cir_reg, 0);
1718 		if (pir_reg)
1719 			handle_txschq_shaper_update(rvu, blkaddr, nixlf,
1720 						    lvl, pir_reg, 0);
1721 		return;
1722 	}
1723 
1724 	if (!cir_reg)
1725 		return;
1726 	cfg = rvu_read64(rvu, blkaddr, cir_reg);
1727 	rvu_write64(rvu, blkaddr, cir_reg, cfg & ~BIT_ULL(0));
1728 
1729 	if (!pir_reg)
1730 		return;
1731 	cfg = rvu_read64(rvu, blkaddr, pir_reg);
1732 	rvu_write64(rvu, blkaddr, pir_reg, cfg & ~BIT_ULL(0));
1733 }
1734 
nix_reset_tx_linkcfg(struct rvu * rvu,int blkaddr,int lvl,int schq)1735 static void nix_reset_tx_linkcfg(struct rvu *rvu, int blkaddr,
1736 				 int lvl, int schq)
1737 {
1738 	struct rvu_hwinfo *hw = rvu->hw;
1739 	int link_level;
1740 	int link;
1741 
1742 	if (lvl >= hw->cap.nix_tx_aggr_lvl)
1743 		return;
1744 
1745 	/* Reset TL4's SDP link config */
1746 	if (lvl == NIX_TXSCH_LVL_TL4)
1747 		rvu_write64(rvu, blkaddr, NIX_AF_TL4X_SDP_LINK_CFG(schq), 0x00);
1748 
1749 	link_level = rvu_read64(rvu, blkaddr, NIX_AF_PSE_CHANNEL_LEVEL) & 0x01 ?
1750 			NIX_TXSCH_LVL_TL3 : NIX_TXSCH_LVL_TL2;
1751 	if (lvl != link_level)
1752 		return;
1753 
1754 	/* Reset TL2's CGX or LBK link config */
1755 	for (link = 0; link < (hw->cgx_links + hw->lbk_links); link++)
1756 		rvu_write64(rvu, blkaddr,
1757 			    NIX_AF_TL3_TL2X_LINKX_CFG(schq, link), 0x00);
1758 }
1759 
nix_clear_tx_xoff(struct rvu * rvu,int blkaddr,int lvl,int schq)1760 static void nix_clear_tx_xoff(struct rvu *rvu, int blkaddr,
1761 			      int lvl, int schq)
1762 {
1763 	struct rvu_hwinfo *hw = rvu->hw;
1764 	u64 reg;
1765 
1766 	/* Skip this if shaping is not supported */
1767 	if (!hw->cap.nix_shaping)
1768 		return;
1769 
1770 	/* Clear level specific SW_XOFF */
1771 	switch (lvl) {
1772 	case NIX_TXSCH_LVL_TL1:
1773 		reg = NIX_AF_TL1X_SW_XOFF(schq);
1774 		break;
1775 	case NIX_TXSCH_LVL_TL2:
1776 		reg = NIX_AF_TL2X_SW_XOFF(schq);
1777 		break;
1778 	case NIX_TXSCH_LVL_TL3:
1779 		reg = NIX_AF_TL3X_SW_XOFF(schq);
1780 		break;
1781 	case NIX_TXSCH_LVL_TL4:
1782 		reg = NIX_AF_TL4X_SW_XOFF(schq);
1783 		break;
1784 	case NIX_TXSCH_LVL_MDQ:
1785 		reg = NIX_AF_MDQX_SW_XOFF(schq);
1786 		break;
1787 	default:
1788 		return;
1789 	}
1790 
1791 	rvu_write64(rvu, blkaddr, reg, 0x0);
1792 }
1793 
nix_get_tx_link(struct rvu * rvu,u16 pcifunc)1794 static int nix_get_tx_link(struct rvu *rvu, u16 pcifunc)
1795 {
1796 	struct rvu_hwinfo *hw = rvu->hw;
1797 	int pf = rvu_get_pf(pcifunc);
1798 	u8 cgx_id = 0, lmac_id = 0;
1799 
1800 	if (is_afvf(pcifunc)) {/* LBK links */
1801 		return hw->cgx_links;
1802 	} else if (is_pf_cgxmapped(rvu, pf)) {
1803 		rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
1804 		return (cgx_id * hw->lmac_per_cgx) + lmac_id;
1805 	}
1806 
1807 	/* SDP link */
1808 	return hw->cgx_links + hw->lbk_links;
1809 }
1810 
nix_get_txschq_range(struct rvu * rvu,u16 pcifunc,int link,int * start,int * end)1811 static void nix_get_txschq_range(struct rvu *rvu, u16 pcifunc,
1812 				 int link, int *start, int *end)
1813 {
1814 	struct rvu_hwinfo *hw = rvu->hw;
1815 	int pf = rvu_get_pf(pcifunc);
1816 
1817 	if (is_afvf(pcifunc)) { /* LBK links */
1818 		*start = hw->cap.nix_txsch_per_cgx_lmac * link;
1819 		*end = *start + hw->cap.nix_txsch_per_lbk_lmac;
1820 	} else if (is_pf_cgxmapped(rvu, pf)) { /* CGX links */
1821 		*start = hw->cap.nix_txsch_per_cgx_lmac * link;
1822 		*end = *start + hw->cap.nix_txsch_per_cgx_lmac;
1823 	} else { /* SDP link */
1824 		*start = (hw->cap.nix_txsch_per_cgx_lmac * hw->cgx_links) +
1825 			(hw->cap.nix_txsch_per_lbk_lmac * hw->lbk_links);
1826 		*end = *start + hw->cap.nix_txsch_per_sdp_lmac;
1827 	}
1828 }
1829 
nix_check_txschq_alloc_req(struct rvu * rvu,int lvl,u16 pcifunc,struct nix_hw * nix_hw,struct nix_txsch_alloc_req * req)1830 static int nix_check_txschq_alloc_req(struct rvu *rvu, int lvl, u16 pcifunc,
1831 				      struct nix_hw *nix_hw,
1832 				      struct nix_txsch_alloc_req *req)
1833 {
1834 	struct rvu_hwinfo *hw = rvu->hw;
1835 	int schq, req_schq, free_cnt;
1836 	struct nix_txsch *txsch;
1837 	int link, start, end;
1838 
1839 	txsch = &nix_hw->txsch[lvl];
1840 	req_schq = req->schq_contig[lvl] + req->schq[lvl];
1841 
1842 	if (!req_schq)
1843 		return 0;
1844 
1845 	link = nix_get_tx_link(rvu, pcifunc);
1846 
1847 	/* For traffic aggregating scheduler level, one queue is enough */
1848 	if (lvl >= hw->cap.nix_tx_aggr_lvl) {
1849 		if (req_schq != 1)
1850 			return NIX_AF_ERR_TLX_ALLOC_FAIL;
1851 		return 0;
1852 	}
1853 
1854 	/* Get free SCHQ count and check if request can be accomodated */
1855 	if (hw->cap.nix_fixed_txschq_mapping) {
1856 		nix_get_txschq_range(rvu, pcifunc, link, &start, &end);
1857 		schq = start + (pcifunc & RVU_PFVF_FUNC_MASK);
1858 		if (end <= txsch->schq.max && schq < end &&
1859 		    !test_bit(schq, txsch->schq.bmap))
1860 			free_cnt = 1;
1861 		else
1862 			free_cnt = 0;
1863 	} else {
1864 		free_cnt = rvu_rsrc_free_count(&txsch->schq);
1865 	}
1866 
1867 	if (free_cnt < req_schq || req_schq > MAX_TXSCHQ_PER_FUNC)
1868 		return NIX_AF_ERR_TLX_ALLOC_FAIL;
1869 
1870 	/* If contiguous queues are needed, check for availability */
1871 	if (!hw->cap.nix_fixed_txschq_mapping && req->schq_contig[lvl] &&
1872 	    !rvu_rsrc_check_contig(&txsch->schq, req->schq_contig[lvl]))
1873 		return NIX_AF_ERR_TLX_ALLOC_FAIL;
1874 
1875 	return 0;
1876 }
1877 
nix_txsch_alloc(struct rvu * rvu,struct nix_txsch * txsch,struct nix_txsch_alloc_rsp * rsp,int lvl,int start,int end)1878 static void nix_txsch_alloc(struct rvu *rvu, struct nix_txsch *txsch,
1879 			    struct nix_txsch_alloc_rsp *rsp,
1880 			    int lvl, int start, int end)
1881 {
1882 	struct rvu_hwinfo *hw = rvu->hw;
1883 	u16 pcifunc = rsp->hdr.pcifunc;
1884 	int idx, schq;
1885 
1886 	/* For traffic aggregating levels, queue alloc is based
1887 	 * on transmit link to which PF_FUNC is mapped to.
1888 	 */
1889 	if (lvl >= hw->cap.nix_tx_aggr_lvl) {
1890 		/* A single TL queue is allocated */
1891 		if (rsp->schq_contig[lvl]) {
1892 			rsp->schq_contig[lvl] = 1;
1893 			rsp->schq_contig_list[lvl][0] = start;
1894 		}
1895 
1896 		/* Both contig and non-contig reqs doesn't make sense here */
1897 		if (rsp->schq_contig[lvl])
1898 			rsp->schq[lvl] = 0;
1899 
1900 		if (rsp->schq[lvl]) {
1901 			rsp->schq[lvl] = 1;
1902 			rsp->schq_list[lvl][0] = start;
1903 		}
1904 		return;
1905 	}
1906 
1907 	/* Adjust the queue request count if HW supports
1908 	 * only one queue per level configuration.
1909 	 */
1910 	if (hw->cap.nix_fixed_txschq_mapping) {
1911 		idx = pcifunc & RVU_PFVF_FUNC_MASK;
1912 		schq = start + idx;
1913 		if (idx >= (end - start) || test_bit(schq, txsch->schq.bmap)) {
1914 			rsp->schq_contig[lvl] = 0;
1915 			rsp->schq[lvl] = 0;
1916 			return;
1917 		}
1918 
1919 		if (rsp->schq_contig[lvl]) {
1920 			rsp->schq_contig[lvl] = 1;
1921 			set_bit(schq, txsch->schq.bmap);
1922 			rsp->schq_contig_list[lvl][0] = schq;
1923 			rsp->schq[lvl] = 0;
1924 		} else if (rsp->schq[lvl]) {
1925 			rsp->schq[lvl] = 1;
1926 			set_bit(schq, txsch->schq.bmap);
1927 			rsp->schq_list[lvl][0] = schq;
1928 		}
1929 		return;
1930 	}
1931 
1932 	/* Allocate contiguous queue indices requesty first */
1933 	if (rsp->schq_contig[lvl]) {
1934 		schq = bitmap_find_next_zero_area(txsch->schq.bmap,
1935 						  txsch->schq.max, start,
1936 						  rsp->schq_contig[lvl], 0);
1937 		if (schq >= end)
1938 			rsp->schq_contig[lvl] = 0;
1939 		for (idx = 0; idx < rsp->schq_contig[lvl]; idx++) {
1940 			set_bit(schq, txsch->schq.bmap);
1941 			rsp->schq_contig_list[lvl][idx] = schq;
1942 			schq++;
1943 		}
1944 	}
1945 
1946 	/* Allocate non-contiguous queue indices */
1947 	if (rsp->schq[lvl]) {
1948 		idx = 0;
1949 		for (schq = start; schq < end; schq++) {
1950 			if (!test_bit(schq, txsch->schq.bmap)) {
1951 				set_bit(schq, txsch->schq.bmap);
1952 				rsp->schq_list[lvl][idx++] = schq;
1953 			}
1954 			if (idx == rsp->schq[lvl])
1955 				break;
1956 		}
1957 		/* Update how many were allocated */
1958 		rsp->schq[lvl] = idx;
1959 	}
1960 }
1961 
rvu_mbox_handler_nix_txsch_alloc(struct rvu * rvu,struct nix_txsch_alloc_req * req,struct nix_txsch_alloc_rsp * rsp)1962 int rvu_mbox_handler_nix_txsch_alloc(struct rvu *rvu,
1963 				     struct nix_txsch_alloc_req *req,
1964 				     struct nix_txsch_alloc_rsp *rsp)
1965 {
1966 	struct rvu_hwinfo *hw = rvu->hw;
1967 	u16 pcifunc = req->hdr.pcifunc;
1968 	int link, blkaddr, rc = 0;
1969 	int lvl, idx, start, end;
1970 	struct nix_txsch *txsch;
1971 	struct nix_hw *nix_hw;
1972 	u32 *pfvf_map;
1973 	int nixlf;
1974 	u16 schq;
1975 
1976 	rc = nix_get_nixlf(rvu, pcifunc, &nixlf, &blkaddr);
1977 	if (rc)
1978 		return rc;
1979 
1980 	nix_hw = get_nix_hw(rvu->hw, blkaddr);
1981 	if (!nix_hw)
1982 		return NIX_AF_ERR_INVALID_NIXBLK;
1983 
1984 	mutex_lock(&rvu->rsrc_lock);
1985 
1986 	/* Check if request is valid as per HW capabilities
1987 	 * and can be accomodated.
1988 	 */
1989 	for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++) {
1990 		rc = nix_check_txschq_alloc_req(rvu, lvl, pcifunc, nix_hw, req);
1991 		if (rc)
1992 			goto err;
1993 	}
1994 
1995 	/* Allocate requested Tx scheduler queues */
1996 	for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++) {
1997 		txsch = &nix_hw->txsch[lvl];
1998 		pfvf_map = txsch->pfvf_map;
1999 
2000 		if (!req->schq[lvl] && !req->schq_contig[lvl])
2001 			continue;
2002 
2003 		rsp->schq[lvl] = req->schq[lvl];
2004 		rsp->schq_contig[lvl] = req->schq_contig[lvl];
2005 
2006 		link = nix_get_tx_link(rvu, pcifunc);
2007 
2008 		if (lvl >= hw->cap.nix_tx_aggr_lvl) {
2009 			start = link;
2010 			end = link;
2011 		} else if (hw->cap.nix_fixed_txschq_mapping) {
2012 			nix_get_txschq_range(rvu, pcifunc, link, &start, &end);
2013 		} else {
2014 			start = 0;
2015 			end = txsch->schq.max;
2016 		}
2017 
2018 		nix_txsch_alloc(rvu, txsch, rsp, lvl, start, end);
2019 
2020 		/* Reset queue config */
2021 		for (idx = 0; idx < req->schq_contig[lvl]; idx++) {
2022 			schq = rsp->schq_contig_list[lvl][idx];
2023 			if (!(TXSCH_MAP_FLAGS(pfvf_map[schq]) &
2024 			    NIX_TXSCHQ_CFG_DONE))
2025 				pfvf_map[schq] = TXSCH_MAP(pcifunc, 0);
2026 			nix_reset_tx_linkcfg(rvu, blkaddr, lvl, schq);
2027 			nix_reset_tx_shaping(rvu, blkaddr, nixlf, lvl, schq);
2028 		}
2029 
2030 		for (idx = 0; idx < req->schq[lvl]; idx++) {
2031 			schq = rsp->schq_list[lvl][idx];
2032 			if (!(TXSCH_MAP_FLAGS(pfvf_map[schq]) &
2033 			    NIX_TXSCHQ_CFG_DONE))
2034 				pfvf_map[schq] = TXSCH_MAP(pcifunc, 0);
2035 			nix_reset_tx_linkcfg(rvu, blkaddr, lvl, schq);
2036 			nix_reset_tx_shaping(rvu, blkaddr, nixlf, lvl, schq);
2037 		}
2038 	}
2039 
2040 	rsp->aggr_level = hw->cap.nix_tx_aggr_lvl;
2041 	rsp->aggr_lvl_rr_prio = TXSCH_TL1_DFLT_RR_PRIO;
2042 	rsp->link_cfg_lvl = rvu_read64(rvu, blkaddr,
2043 				       NIX_AF_PSE_CHANNEL_LEVEL) & 0x01 ?
2044 				       NIX_TXSCH_LVL_TL3 : NIX_TXSCH_LVL_TL2;
2045 	goto exit;
2046 err:
2047 	rc = NIX_AF_ERR_TLX_ALLOC_FAIL;
2048 exit:
2049 	mutex_unlock(&rvu->rsrc_lock);
2050 	return rc;
2051 }
2052 
nix_smq_flush(struct rvu * rvu,int blkaddr,int smq,u16 pcifunc,int nixlf)2053 static int nix_smq_flush(struct rvu *rvu, int blkaddr,
2054 			 int smq, u16 pcifunc, int nixlf)
2055 {
2056 	int pf = rvu_get_pf(pcifunc);
2057 	u8 cgx_id = 0, lmac_id = 0;
2058 	int err, restore_tx_en = 0;
2059 	u64 cfg;
2060 
2061 	/* enable cgx tx if disabled */
2062 	if (is_pf_cgxmapped(rvu, pf)) {
2063 		rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
2064 		restore_tx_en = !rvu_cgx_config_tx(rvu_cgx_pdata(cgx_id, rvu),
2065 						   lmac_id, true);
2066 	}
2067 
2068 	cfg = rvu_read64(rvu, blkaddr, NIX_AF_SMQX_CFG(smq));
2069 	/* Do SMQ flush and set enqueue xoff */
2070 	cfg |= BIT_ULL(50) | BIT_ULL(49);
2071 	rvu_write64(rvu, blkaddr, NIX_AF_SMQX_CFG(smq), cfg);
2072 
2073 	/* Disable backpressure from physical link,
2074 	 * otherwise SMQ flush may stall.
2075 	 */
2076 	rvu_cgx_enadis_rx_bp(rvu, pf, false);
2077 
2078 	/* Wait for flush to complete */
2079 	err = rvu_poll_reg(rvu, blkaddr,
2080 			   NIX_AF_SMQX_CFG(smq), BIT_ULL(49), true);
2081 	if (err)
2082 		dev_err(rvu->dev,
2083 			"NIXLF%d: SMQ%d flush failed\n", nixlf, smq);
2084 
2085 	rvu_cgx_enadis_rx_bp(rvu, pf, true);
2086 	/* restore cgx tx state */
2087 	if (restore_tx_en)
2088 		rvu_cgx_config_tx(rvu_cgx_pdata(cgx_id, rvu), lmac_id, false);
2089 	return err;
2090 }
2091 
nix_txschq_free(struct rvu * rvu,u16 pcifunc)2092 static int nix_txschq_free(struct rvu *rvu, u16 pcifunc)
2093 {
2094 	int blkaddr, nixlf, lvl, schq, err;
2095 	struct rvu_hwinfo *hw = rvu->hw;
2096 	struct nix_txsch *txsch;
2097 	struct nix_hw *nix_hw;
2098 	u16 map_func;
2099 
2100 	blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, pcifunc);
2101 	if (blkaddr < 0)
2102 		return NIX_AF_ERR_AF_LF_INVALID;
2103 
2104 	nix_hw = get_nix_hw(rvu->hw, blkaddr);
2105 	if (!nix_hw)
2106 		return NIX_AF_ERR_INVALID_NIXBLK;
2107 
2108 	nixlf = rvu_get_lf(rvu, &hw->block[blkaddr], pcifunc, 0);
2109 	if (nixlf < 0)
2110 		return NIX_AF_ERR_AF_LF_INVALID;
2111 
2112 	/* Disable TL2/3 queue links and all XOFF's before SMQ flush*/
2113 	mutex_lock(&rvu->rsrc_lock);
2114 	for (lvl = NIX_TXSCH_LVL_MDQ; lvl < NIX_TXSCH_LVL_CNT; lvl++) {
2115 		txsch = &nix_hw->txsch[lvl];
2116 
2117 		if (lvl >= hw->cap.nix_tx_aggr_lvl)
2118 			continue;
2119 
2120 		for (schq = 0; schq < txsch->schq.max; schq++) {
2121 			if (TXSCH_MAP_FUNC(txsch->pfvf_map[schq]) != pcifunc)
2122 				continue;
2123 			nix_reset_tx_linkcfg(rvu, blkaddr, lvl, schq);
2124 			nix_clear_tx_xoff(rvu, blkaddr, lvl, schq);
2125 		}
2126 	}
2127 	nix_clear_tx_xoff(rvu, blkaddr, NIX_TXSCH_LVL_TL1,
2128 			  nix_get_tx_link(rvu, pcifunc));
2129 
2130 	/* On PF cleanup, clear cfg done flag as
2131 	 * PF would have changed default config.
2132 	 */
2133 	if (!(pcifunc & RVU_PFVF_FUNC_MASK)) {
2134 		txsch = &nix_hw->txsch[NIX_TXSCH_LVL_TL1];
2135 		schq = nix_get_tx_link(rvu, pcifunc);
2136 		/* Do not clear pcifunc in txsch->pfvf_map[schq] because
2137 		 * VF might be using this TL1 queue
2138 		 */
2139 		map_func = TXSCH_MAP_FUNC(txsch->pfvf_map[schq]);
2140 		txsch->pfvf_map[schq] = TXSCH_SET_FLAG(map_func, 0x0);
2141 	}
2142 
2143 	/* Flush SMQs */
2144 	txsch = &nix_hw->txsch[NIX_TXSCH_LVL_SMQ];
2145 	for (schq = 0; schq < txsch->schq.max; schq++) {
2146 		if (TXSCH_MAP_FUNC(txsch->pfvf_map[schq]) != pcifunc)
2147 			continue;
2148 		nix_smq_flush(rvu, blkaddr, schq, pcifunc, nixlf);
2149 	}
2150 
2151 	/* Now free scheduler queues to free pool */
2152 	for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++) {
2153 		 /* TLs above aggregation level are shared across all PF
2154 		  * and it's VFs, hence skip freeing them.
2155 		  */
2156 		if (lvl >= hw->cap.nix_tx_aggr_lvl)
2157 			continue;
2158 
2159 		txsch = &nix_hw->txsch[lvl];
2160 		for (schq = 0; schq < txsch->schq.max; schq++) {
2161 			if (TXSCH_MAP_FUNC(txsch->pfvf_map[schq]) != pcifunc)
2162 				continue;
2163 			rvu_free_rsrc(&txsch->schq, schq);
2164 			txsch->pfvf_map[schq] = TXSCH_MAP(0, NIX_TXSCHQ_FREE);
2165 		}
2166 	}
2167 	mutex_unlock(&rvu->rsrc_lock);
2168 
2169 	/* Sync cached info for this LF in NDC-TX to LLC/DRAM */
2170 	rvu_write64(rvu, blkaddr, NIX_AF_NDC_TX_SYNC, BIT_ULL(12) | nixlf);
2171 	err = rvu_poll_reg(rvu, blkaddr, NIX_AF_NDC_TX_SYNC, BIT_ULL(12), true);
2172 	if (err)
2173 		dev_err(rvu->dev, "NDC-TX sync failed for NIXLF %d\n", nixlf);
2174 
2175 	return 0;
2176 }
2177 
nix_txschq_free_one(struct rvu * rvu,struct nix_txsch_free_req * req)2178 static int nix_txschq_free_one(struct rvu *rvu,
2179 			       struct nix_txsch_free_req *req)
2180 {
2181 	struct rvu_hwinfo *hw = rvu->hw;
2182 	u16 pcifunc = req->hdr.pcifunc;
2183 	int lvl, schq, nixlf, blkaddr;
2184 	struct nix_txsch *txsch;
2185 	struct nix_hw *nix_hw;
2186 	u32 *pfvf_map;
2187 	int rc;
2188 
2189 	blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, pcifunc);
2190 	if (blkaddr < 0)
2191 		return NIX_AF_ERR_AF_LF_INVALID;
2192 
2193 	nix_hw = get_nix_hw(rvu->hw, blkaddr);
2194 	if (!nix_hw)
2195 		return NIX_AF_ERR_INVALID_NIXBLK;
2196 
2197 	nixlf = rvu_get_lf(rvu, &hw->block[blkaddr], pcifunc, 0);
2198 	if (nixlf < 0)
2199 		return NIX_AF_ERR_AF_LF_INVALID;
2200 
2201 	lvl = req->schq_lvl;
2202 	schq = req->schq;
2203 	txsch = &nix_hw->txsch[lvl];
2204 
2205 	if (lvl >= hw->cap.nix_tx_aggr_lvl || schq >= txsch->schq.max)
2206 		return 0;
2207 
2208 	pfvf_map = txsch->pfvf_map;
2209 	mutex_lock(&rvu->rsrc_lock);
2210 
2211 	if (TXSCH_MAP_FUNC(pfvf_map[schq]) != pcifunc) {
2212 		rc = NIX_AF_ERR_TLX_INVALID;
2213 		goto err;
2214 	}
2215 
2216 	/* Clear SW_XOFF of this resource only.
2217 	 * For SMQ level, all path XOFF's
2218 	 * need to be made clear by user
2219 	 */
2220 	nix_clear_tx_xoff(rvu, blkaddr, lvl, schq);
2221 
2222 	/* Flush if it is a SMQ. Onus of disabling
2223 	 * TL2/3 queue links before SMQ flush is on user
2224 	 */
2225 	if (lvl == NIX_TXSCH_LVL_SMQ &&
2226 	    nix_smq_flush(rvu, blkaddr, schq, pcifunc, nixlf)) {
2227 		rc = NIX_AF_SMQ_FLUSH_FAILED;
2228 		goto err;
2229 	}
2230 
2231 	/* Free the resource */
2232 	rvu_free_rsrc(&txsch->schq, schq);
2233 	txsch->pfvf_map[schq] = TXSCH_MAP(0, NIX_TXSCHQ_FREE);
2234 	mutex_unlock(&rvu->rsrc_lock);
2235 	return 0;
2236 err:
2237 	mutex_unlock(&rvu->rsrc_lock);
2238 	return rc;
2239 }
2240 
rvu_mbox_handler_nix_txsch_free(struct rvu * rvu,struct nix_txsch_free_req * req,struct msg_rsp * rsp)2241 int rvu_mbox_handler_nix_txsch_free(struct rvu *rvu,
2242 				    struct nix_txsch_free_req *req,
2243 				    struct msg_rsp *rsp)
2244 {
2245 	if (req->flags & TXSCHQ_FREE_ALL)
2246 		return nix_txschq_free(rvu, req->hdr.pcifunc);
2247 	else
2248 		return nix_txschq_free_one(rvu, req);
2249 }
2250 
is_txschq_hierarchy_valid(struct rvu * rvu,u16 pcifunc,int blkaddr,int lvl,u64 reg,u64 regval)2251 static bool is_txschq_hierarchy_valid(struct rvu *rvu, u16 pcifunc, int blkaddr,
2252 				      int lvl, u64 reg, u64 regval)
2253 {
2254 	u64 regbase = reg & 0xFFFF;
2255 	u16 schq, parent;
2256 
2257 	if (!rvu_check_valid_reg(TXSCHQ_HWREGMAP, lvl, reg))
2258 		return false;
2259 
2260 	schq = TXSCHQ_IDX(reg, TXSCHQ_IDX_SHIFT);
2261 	/* Check if this schq belongs to this PF/VF or not */
2262 	if (!is_valid_txschq(rvu, blkaddr, lvl, pcifunc, schq))
2263 		return false;
2264 
2265 	parent = (regval >> 16) & 0x1FF;
2266 	/* Validate MDQ's TL4 parent */
2267 	if (regbase == NIX_AF_MDQX_PARENT(0) &&
2268 	    !is_valid_txschq(rvu, blkaddr, NIX_TXSCH_LVL_TL4, pcifunc, parent))
2269 		return false;
2270 
2271 	/* Validate TL4's TL3 parent */
2272 	if (regbase == NIX_AF_TL4X_PARENT(0) &&
2273 	    !is_valid_txschq(rvu, blkaddr, NIX_TXSCH_LVL_TL3, pcifunc, parent))
2274 		return false;
2275 
2276 	/* Validate TL3's TL2 parent */
2277 	if (regbase == NIX_AF_TL3X_PARENT(0) &&
2278 	    !is_valid_txschq(rvu, blkaddr, NIX_TXSCH_LVL_TL2, pcifunc, parent))
2279 		return false;
2280 
2281 	/* Validate TL2's TL1 parent */
2282 	if (regbase == NIX_AF_TL2X_PARENT(0) &&
2283 	    !is_valid_txschq(rvu, blkaddr, NIX_TXSCH_LVL_TL1, pcifunc, parent))
2284 		return false;
2285 
2286 	return true;
2287 }
2288 
is_txschq_shaping_valid(struct rvu_hwinfo * hw,int lvl,u64 reg)2289 static bool is_txschq_shaping_valid(struct rvu_hwinfo *hw, int lvl, u64 reg)
2290 {
2291 	u64 regbase;
2292 
2293 	if (hw->cap.nix_shaping)
2294 		return true;
2295 
2296 	/* If shaping and coloring is not supported, then
2297 	 * *_CIR and *_PIR registers should not be configured.
2298 	 */
2299 	regbase = reg & 0xFFFF;
2300 
2301 	switch (lvl) {
2302 	case NIX_TXSCH_LVL_TL1:
2303 		if (regbase == NIX_AF_TL1X_CIR(0))
2304 			return false;
2305 		break;
2306 	case NIX_TXSCH_LVL_TL2:
2307 		if (regbase == NIX_AF_TL2X_CIR(0) ||
2308 		    regbase == NIX_AF_TL2X_PIR(0))
2309 			return false;
2310 		break;
2311 	case NIX_TXSCH_LVL_TL3:
2312 		if (regbase == NIX_AF_TL3X_CIR(0) ||
2313 		    regbase == NIX_AF_TL3X_PIR(0))
2314 			return false;
2315 		break;
2316 	case NIX_TXSCH_LVL_TL4:
2317 		if (regbase == NIX_AF_TL4X_CIR(0) ||
2318 		    regbase == NIX_AF_TL4X_PIR(0))
2319 			return false;
2320 		break;
2321 	case NIX_TXSCH_LVL_MDQ:
2322 		if (regbase == NIX_AF_MDQX_CIR(0) ||
2323 		    regbase == NIX_AF_MDQX_PIR(0))
2324 			return false;
2325 		break;
2326 	}
2327 	return true;
2328 }
2329 
nix_tl1_default_cfg(struct rvu * rvu,struct nix_hw * nix_hw,u16 pcifunc,int blkaddr)2330 static void nix_tl1_default_cfg(struct rvu *rvu, struct nix_hw *nix_hw,
2331 				u16 pcifunc, int blkaddr)
2332 {
2333 	u32 *pfvf_map;
2334 	int schq;
2335 
2336 	schq = nix_get_tx_link(rvu, pcifunc);
2337 	pfvf_map = nix_hw->txsch[NIX_TXSCH_LVL_TL1].pfvf_map;
2338 	/* Skip if PF has already done the config */
2339 	if (TXSCH_MAP_FLAGS(pfvf_map[schq]) & NIX_TXSCHQ_CFG_DONE)
2340 		return;
2341 	rvu_write64(rvu, blkaddr, NIX_AF_TL1X_TOPOLOGY(schq),
2342 		    (TXSCH_TL1_DFLT_RR_PRIO << 1));
2343 
2344 	/* On OcteonTx2 the config was in bytes and newer silcons
2345 	 * it's changed to weight.
2346 	 */
2347 	if (!rvu->hw->cap.nix_common_dwrr_mtu)
2348 		rvu_write64(rvu, blkaddr, NIX_AF_TL1X_SCHEDULE(schq),
2349 			    TXSCH_TL1_DFLT_RR_QTM);
2350 	else
2351 		rvu_write64(rvu, blkaddr, NIX_AF_TL1X_SCHEDULE(schq),
2352 			    CN10K_MAX_DWRR_WEIGHT);
2353 
2354 	rvu_write64(rvu, blkaddr, NIX_AF_TL1X_CIR(schq), 0x00);
2355 	pfvf_map[schq] = TXSCH_SET_FLAG(pfvf_map[schq], NIX_TXSCHQ_CFG_DONE);
2356 }
2357 
2358 /* Register offset - [15:0]
2359  * Scheduler Queue number - [25:16]
2360  */
2361 #define NIX_TX_SCHQ_MASK	GENMASK_ULL(25, 0)
2362 
nix_txschq_cfg_read(struct rvu * rvu,struct nix_hw * nix_hw,int blkaddr,struct nix_txschq_config * req,struct nix_txschq_config * rsp)2363 static int nix_txschq_cfg_read(struct rvu *rvu, struct nix_hw *nix_hw,
2364 			       int blkaddr, struct nix_txschq_config *req,
2365 			       struct nix_txschq_config *rsp)
2366 {
2367 	u16 pcifunc = req->hdr.pcifunc;
2368 	int idx, schq;
2369 	u64 reg;
2370 
2371 	for (idx = 0; idx < req->num_regs; idx++) {
2372 		reg = req->reg[idx];
2373 		reg &= NIX_TX_SCHQ_MASK;
2374 		schq = TXSCHQ_IDX(reg, TXSCHQ_IDX_SHIFT);
2375 		if (!rvu_check_valid_reg(TXSCHQ_HWREGMAP, req->lvl, reg) ||
2376 		    !is_valid_txschq(rvu, blkaddr, req->lvl, pcifunc, schq))
2377 			return NIX_AF_INVAL_TXSCHQ_CFG;
2378 		rsp->regval[idx] = rvu_read64(rvu, blkaddr, reg);
2379 	}
2380 	rsp->lvl = req->lvl;
2381 	rsp->num_regs = req->num_regs;
2382 	return 0;
2383 }
2384 
rvu_nix_tx_tl2_cfg(struct rvu * rvu,int blkaddr,u16 pcifunc,struct nix_txsch * txsch)2385 static void rvu_nix_tx_tl2_cfg(struct rvu *rvu, int blkaddr,
2386 			       u16 pcifunc, struct nix_txsch *txsch)
2387 {
2388 	struct rvu_hwinfo *hw = rvu->hw;
2389 	int lbk_link_start, lbk_links;
2390 	u8 pf = rvu_get_pf(pcifunc);
2391 	int schq;
2392 
2393 	if (!is_pf_cgxmapped(rvu, pf))
2394 		return;
2395 
2396 	lbk_link_start = hw->cgx_links;
2397 
2398 	for (schq = 0; schq < txsch->schq.max; schq++) {
2399 		if (TXSCH_MAP_FUNC(txsch->pfvf_map[schq]) != pcifunc)
2400 			continue;
2401 		/* Enable all LBK links with channel 63 by default so that
2402 		 * packets can be sent to LBK with a NPC TX MCAM rule
2403 		 */
2404 		lbk_links = hw->lbk_links;
2405 		while (lbk_links--)
2406 			rvu_write64(rvu, blkaddr,
2407 				    NIX_AF_TL3_TL2X_LINKX_CFG(schq,
2408 							      lbk_link_start +
2409 							      lbk_links),
2410 				    BIT_ULL(12) | RVU_SWITCH_LBK_CHAN);
2411 	}
2412 }
2413 
rvu_mbox_handler_nix_txschq_cfg(struct rvu * rvu,struct nix_txschq_config * req,struct nix_txschq_config * rsp)2414 int rvu_mbox_handler_nix_txschq_cfg(struct rvu *rvu,
2415 				    struct nix_txschq_config *req,
2416 				    struct nix_txschq_config *rsp)
2417 {
2418 	u64 reg, val, regval, schq_regbase, val_mask;
2419 	struct rvu_hwinfo *hw = rvu->hw;
2420 	u16 pcifunc = req->hdr.pcifunc;
2421 	struct nix_txsch *txsch;
2422 	struct nix_hw *nix_hw;
2423 	int blkaddr, idx, err;
2424 	int nixlf, schq;
2425 	u32 *pfvf_map;
2426 
2427 	if (req->lvl >= NIX_TXSCH_LVL_CNT ||
2428 	    req->num_regs > MAX_REGS_PER_MBOX_MSG)
2429 		return NIX_AF_INVAL_TXSCHQ_CFG;
2430 
2431 	err = nix_get_nixlf(rvu, pcifunc, &nixlf, &blkaddr);
2432 	if (err)
2433 		return err;
2434 
2435 	nix_hw = get_nix_hw(rvu->hw, blkaddr);
2436 	if (!nix_hw)
2437 		return NIX_AF_ERR_INVALID_NIXBLK;
2438 
2439 	if (req->read)
2440 		return nix_txschq_cfg_read(rvu, nix_hw, blkaddr, req, rsp);
2441 
2442 	txsch = &nix_hw->txsch[req->lvl];
2443 	pfvf_map = txsch->pfvf_map;
2444 
2445 	if (req->lvl >= hw->cap.nix_tx_aggr_lvl &&
2446 	    pcifunc & RVU_PFVF_FUNC_MASK) {
2447 		mutex_lock(&rvu->rsrc_lock);
2448 		if (req->lvl == NIX_TXSCH_LVL_TL1)
2449 			nix_tl1_default_cfg(rvu, nix_hw, pcifunc, blkaddr);
2450 		mutex_unlock(&rvu->rsrc_lock);
2451 		return 0;
2452 	}
2453 
2454 	for (idx = 0; idx < req->num_regs; idx++) {
2455 		reg = req->reg[idx];
2456 		reg &= NIX_TX_SCHQ_MASK;
2457 		regval = req->regval[idx];
2458 		schq_regbase = reg & 0xFFFF;
2459 		val_mask = req->regval_mask[idx];
2460 
2461 		if (!is_txschq_hierarchy_valid(rvu, pcifunc, blkaddr,
2462 					       txsch->lvl, reg, regval))
2463 			return NIX_AF_INVAL_TXSCHQ_CFG;
2464 
2465 		/* Check if shaping and coloring is supported */
2466 		if (!is_txschq_shaping_valid(hw, req->lvl, reg))
2467 			continue;
2468 
2469 		val = rvu_read64(rvu, blkaddr, reg);
2470 		regval = (val & val_mask) | (regval & ~val_mask);
2471 
2472 		/* Handle shaping state toggle specially */
2473 		if (hw->cap.nix_shaper_toggle_wait &&
2474 		    handle_txschq_shaper_update(rvu, blkaddr, nixlf,
2475 						req->lvl, reg, regval))
2476 			continue;
2477 
2478 		/* Replace PF/VF visible NIXLF slot with HW NIXLF id */
2479 		if (schq_regbase == NIX_AF_SMQX_CFG(0)) {
2480 			nixlf = rvu_get_lf(rvu, &hw->block[blkaddr],
2481 					   pcifunc, 0);
2482 			regval &= ~(0x7FULL << 24);
2483 			regval |= ((u64)nixlf << 24);
2484 		}
2485 
2486 		/* Clear 'BP_ENA' config, if it's not allowed */
2487 		if (!hw->cap.nix_tx_link_bp) {
2488 			if (schq_regbase == NIX_AF_TL4X_SDP_LINK_CFG(0) ||
2489 			    (schq_regbase & 0xFF00) ==
2490 			    NIX_AF_TL3_TL2X_LINKX_CFG(0, 0))
2491 				regval &= ~BIT_ULL(13);
2492 		}
2493 
2494 		/* Mark config as done for TL1 by PF */
2495 		if (schq_regbase >= NIX_AF_TL1X_SCHEDULE(0) &&
2496 		    schq_regbase <= NIX_AF_TL1X_GREEN_BYTES(0)) {
2497 			schq = TXSCHQ_IDX(reg, TXSCHQ_IDX_SHIFT);
2498 			mutex_lock(&rvu->rsrc_lock);
2499 			pfvf_map[schq] = TXSCH_SET_FLAG(pfvf_map[schq],
2500 							NIX_TXSCHQ_CFG_DONE);
2501 			mutex_unlock(&rvu->rsrc_lock);
2502 		}
2503 
2504 		/* SMQ flush is special hence split register writes such
2505 		 * that flush first and write rest of the bits later.
2506 		 */
2507 		if (schq_regbase == NIX_AF_SMQX_CFG(0) &&
2508 		    (regval & BIT_ULL(49))) {
2509 			schq = TXSCHQ_IDX(reg, TXSCHQ_IDX_SHIFT);
2510 			nix_smq_flush(rvu, blkaddr, schq, pcifunc, nixlf);
2511 			regval &= ~BIT_ULL(49);
2512 		}
2513 		rvu_write64(rvu, blkaddr, reg, regval);
2514 	}
2515 
2516 	rvu_nix_tx_tl2_cfg(rvu, blkaddr, pcifunc,
2517 			   &nix_hw->txsch[NIX_TXSCH_LVL_TL2]);
2518 	return 0;
2519 }
2520 
nix_rx_vtag_cfg(struct rvu * rvu,int nixlf,int blkaddr,struct nix_vtag_config * req)2521 static int nix_rx_vtag_cfg(struct rvu *rvu, int nixlf, int blkaddr,
2522 			   struct nix_vtag_config *req)
2523 {
2524 	u64 regval = req->vtag_size;
2525 
2526 	if (req->rx.vtag_type > NIX_AF_LFX_RX_VTAG_TYPE7 ||
2527 	    req->vtag_size > VTAGSIZE_T8)
2528 		return -EINVAL;
2529 
2530 	/* RX VTAG Type 7 reserved for vf vlan */
2531 	if (req->rx.vtag_type == NIX_AF_LFX_RX_VTAG_TYPE7)
2532 		return NIX_AF_ERR_RX_VTAG_INUSE;
2533 
2534 	if (req->rx.capture_vtag)
2535 		regval |= BIT_ULL(5);
2536 	if (req->rx.strip_vtag)
2537 		regval |= BIT_ULL(4);
2538 
2539 	rvu_write64(rvu, blkaddr,
2540 		    NIX_AF_LFX_RX_VTAG_TYPEX(nixlf, req->rx.vtag_type), regval);
2541 	return 0;
2542 }
2543 
nix_tx_vtag_free(struct rvu * rvu,int blkaddr,u16 pcifunc,int index)2544 static int nix_tx_vtag_free(struct rvu *rvu, int blkaddr,
2545 			    u16 pcifunc, int index)
2546 {
2547 	struct nix_hw *nix_hw = get_nix_hw(rvu->hw, blkaddr);
2548 	struct nix_txvlan *vlan;
2549 
2550 	if (!nix_hw)
2551 		return NIX_AF_ERR_INVALID_NIXBLK;
2552 
2553 	vlan = &nix_hw->txvlan;
2554 	if (vlan->entry2pfvf_map[index] != pcifunc)
2555 		return NIX_AF_ERR_PARAM;
2556 
2557 	rvu_write64(rvu, blkaddr,
2558 		    NIX_AF_TX_VTAG_DEFX_DATA(index), 0x0ull);
2559 	rvu_write64(rvu, blkaddr,
2560 		    NIX_AF_TX_VTAG_DEFX_CTL(index), 0x0ull);
2561 
2562 	vlan->entry2pfvf_map[index] = 0;
2563 	rvu_free_rsrc(&vlan->rsrc, index);
2564 
2565 	return 0;
2566 }
2567 
nix_free_tx_vtag_entries(struct rvu * rvu,u16 pcifunc)2568 static void nix_free_tx_vtag_entries(struct rvu *rvu, u16 pcifunc)
2569 {
2570 	struct nix_txvlan *vlan;
2571 	struct nix_hw *nix_hw;
2572 	int index, blkaddr;
2573 
2574 	blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, pcifunc);
2575 	if (blkaddr < 0)
2576 		return;
2577 
2578 	nix_hw = get_nix_hw(rvu->hw, blkaddr);
2579 	if (!nix_hw)
2580 		return;
2581 
2582 	vlan = &nix_hw->txvlan;
2583 
2584 	mutex_lock(&vlan->rsrc_lock);
2585 	/* Scan all the entries and free the ones mapped to 'pcifunc' */
2586 	for (index = 0; index < vlan->rsrc.max; index++) {
2587 		if (vlan->entry2pfvf_map[index] == pcifunc)
2588 			nix_tx_vtag_free(rvu, blkaddr, pcifunc, index);
2589 	}
2590 	mutex_unlock(&vlan->rsrc_lock);
2591 }
2592 
nix_tx_vtag_alloc(struct rvu * rvu,int blkaddr,u64 vtag,u8 size)2593 static int nix_tx_vtag_alloc(struct rvu *rvu, int blkaddr,
2594 			     u64 vtag, u8 size)
2595 {
2596 	struct nix_hw *nix_hw = get_nix_hw(rvu->hw, blkaddr);
2597 	struct nix_txvlan *vlan;
2598 	u64 regval;
2599 	int index;
2600 
2601 	if (!nix_hw)
2602 		return NIX_AF_ERR_INVALID_NIXBLK;
2603 
2604 	vlan = &nix_hw->txvlan;
2605 
2606 	mutex_lock(&vlan->rsrc_lock);
2607 
2608 	index = rvu_alloc_rsrc(&vlan->rsrc);
2609 	if (index < 0) {
2610 		mutex_unlock(&vlan->rsrc_lock);
2611 		return index;
2612 	}
2613 
2614 	mutex_unlock(&vlan->rsrc_lock);
2615 
2616 	regval = size ? vtag : vtag << 32;
2617 
2618 	rvu_write64(rvu, blkaddr,
2619 		    NIX_AF_TX_VTAG_DEFX_DATA(index), regval);
2620 	rvu_write64(rvu, blkaddr,
2621 		    NIX_AF_TX_VTAG_DEFX_CTL(index), size);
2622 
2623 	return index;
2624 }
2625 
nix_tx_vtag_decfg(struct rvu * rvu,int blkaddr,struct nix_vtag_config * req)2626 static int nix_tx_vtag_decfg(struct rvu *rvu, int blkaddr,
2627 			     struct nix_vtag_config *req)
2628 {
2629 	struct nix_hw *nix_hw = get_nix_hw(rvu->hw, blkaddr);
2630 	u16 pcifunc = req->hdr.pcifunc;
2631 	int idx0 = req->tx.vtag0_idx;
2632 	int idx1 = req->tx.vtag1_idx;
2633 	struct nix_txvlan *vlan;
2634 	int err = 0;
2635 
2636 	if (!nix_hw)
2637 		return NIX_AF_ERR_INVALID_NIXBLK;
2638 
2639 	vlan = &nix_hw->txvlan;
2640 	if (req->tx.free_vtag0 && req->tx.free_vtag1)
2641 		if (vlan->entry2pfvf_map[idx0] != pcifunc ||
2642 		    vlan->entry2pfvf_map[idx1] != pcifunc)
2643 			return NIX_AF_ERR_PARAM;
2644 
2645 	mutex_lock(&vlan->rsrc_lock);
2646 
2647 	if (req->tx.free_vtag0) {
2648 		err = nix_tx_vtag_free(rvu, blkaddr, pcifunc, idx0);
2649 		if (err)
2650 			goto exit;
2651 	}
2652 
2653 	if (req->tx.free_vtag1)
2654 		err = nix_tx_vtag_free(rvu, blkaddr, pcifunc, idx1);
2655 
2656 exit:
2657 	mutex_unlock(&vlan->rsrc_lock);
2658 	return err;
2659 }
2660 
nix_tx_vtag_cfg(struct rvu * rvu,int blkaddr,struct nix_vtag_config * req,struct nix_vtag_config_rsp * rsp)2661 static int nix_tx_vtag_cfg(struct rvu *rvu, int blkaddr,
2662 			   struct nix_vtag_config *req,
2663 			   struct nix_vtag_config_rsp *rsp)
2664 {
2665 	struct nix_hw *nix_hw = get_nix_hw(rvu->hw, blkaddr);
2666 	struct nix_txvlan *vlan;
2667 	u16 pcifunc = req->hdr.pcifunc;
2668 
2669 	if (!nix_hw)
2670 		return NIX_AF_ERR_INVALID_NIXBLK;
2671 
2672 	vlan = &nix_hw->txvlan;
2673 	if (req->tx.cfg_vtag0) {
2674 		rsp->vtag0_idx =
2675 			nix_tx_vtag_alloc(rvu, blkaddr,
2676 					  req->tx.vtag0, req->vtag_size);
2677 
2678 		if (rsp->vtag0_idx < 0)
2679 			return NIX_AF_ERR_TX_VTAG_NOSPC;
2680 
2681 		vlan->entry2pfvf_map[rsp->vtag0_idx] = pcifunc;
2682 	}
2683 
2684 	if (req->tx.cfg_vtag1) {
2685 		rsp->vtag1_idx =
2686 			nix_tx_vtag_alloc(rvu, blkaddr,
2687 					  req->tx.vtag1, req->vtag_size);
2688 
2689 		if (rsp->vtag1_idx < 0)
2690 			goto err_free;
2691 
2692 		vlan->entry2pfvf_map[rsp->vtag1_idx] = pcifunc;
2693 	}
2694 
2695 	return 0;
2696 
2697 err_free:
2698 	if (req->tx.cfg_vtag0)
2699 		nix_tx_vtag_free(rvu, blkaddr, pcifunc, rsp->vtag0_idx);
2700 
2701 	return NIX_AF_ERR_TX_VTAG_NOSPC;
2702 }
2703 
rvu_mbox_handler_nix_vtag_cfg(struct rvu * rvu,struct nix_vtag_config * req,struct nix_vtag_config_rsp * rsp)2704 int rvu_mbox_handler_nix_vtag_cfg(struct rvu *rvu,
2705 				  struct nix_vtag_config *req,
2706 				  struct nix_vtag_config_rsp *rsp)
2707 {
2708 	u16 pcifunc = req->hdr.pcifunc;
2709 	int blkaddr, nixlf, err;
2710 
2711 	err = nix_get_nixlf(rvu, pcifunc, &nixlf, &blkaddr);
2712 	if (err)
2713 		return err;
2714 
2715 	if (req->cfg_type) {
2716 		/* rx vtag configuration */
2717 		err = nix_rx_vtag_cfg(rvu, nixlf, blkaddr, req);
2718 		if (err)
2719 			return NIX_AF_ERR_PARAM;
2720 	} else {
2721 		/* tx vtag configuration */
2722 		if ((req->tx.cfg_vtag0 || req->tx.cfg_vtag1) &&
2723 		    (req->tx.free_vtag0 || req->tx.free_vtag1))
2724 			return NIX_AF_ERR_PARAM;
2725 
2726 		if (req->tx.cfg_vtag0 || req->tx.cfg_vtag1)
2727 			return nix_tx_vtag_cfg(rvu, blkaddr, req, rsp);
2728 
2729 		if (req->tx.free_vtag0 || req->tx.free_vtag1)
2730 			return nix_tx_vtag_decfg(rvu, blkaddr, req);
2731 	}
2732 
2733 	return 0;
2734 }
2735 
nix_blk_setup_mce(struct rvu * rvu,struct nix_hw * nix_hw,int mce,u8 op,u16 pcifunc,int next,bool eol)2736 static int nix_blk_setup_mce(struct rvu *rvu, struct nix_hw *nix_hw,
2737 			     int mce, u8 op, u16 pcifunc, int next, bool eol)
2738 {
2739 	struct nix_aq_enq_req aq_req;
2740 	int err;
2741 
2742 	aq_req.hdr.pcifunc = 0;
2743 	aq_req.ctype = NIX_AQ_CTYPE_MCE;
2744 	aq_req.op = op;
2745 	aq_req.qidx = mce;
2746 
2747 	/* Use RSS with RSS index 0 */
2748 	aq_req.mce.op = 1;
2749 	aq_req.mce.index = 0;
2750 	aq_req.mce.eol = eol;
2751 	aq_req.mce.pf_func = pcifunc;
2752 	aq_req.mce.next = next;
2753 
2754 	/* All fields valid */
2755 	*(u64 *)(&aq_req.mce_mask) = ~0ULL;
2756 
2757 	err = rvu_nix_blk_aq_enq_inst(rvu, nix_hw, &aq_req, NULL);
2758 	if (err) {
2759 		dev_err(rvu->dev, "Failed to setup Bcast MCE for PF%d:VF%d\n",
2760 			rvu_get_pf(pcifunc), pcifunc & RVU_PFVF_FUNC_MASK);
2761 		return err;
2762 	}
2763 	return 0;
2764 }
2765 
nix_update_mce_list_entry(struct nix_mce_list * mce_list,u16 pcifunc,bool add)2766 static int nix_update_mce_list_entry(struct nix_mce_list *mce_list,
2767 				     u16 pcifunc, bool add)
2768 {
2769 	struct mce *mce, *tail = NULL;
2770 	bool delete = false;
2771 
2772 	/* Scan through the current list */
2773 	hlist_for_each_entry(mce, &mce_list->head, node) {
2774 		/* If already exists, then delete */
2775 		if (mce->pcifunc == pcifunc && !add) {
2776 			delete = true;
2777 			break;
2778 		} else if (mce->pcifunc == pcifunc && add) {
2779 			/* entry already exists */
2780 			return 0;
2781 		}
2782 		tail = mce;
2783 	}
2784 
2785 	if (delete) {
2786 		hlist_del(&mce->node);
2787 		kfree(mce);
2788 		mce_list->count--;
2789 		return 0;
2790 	}
2791 
2792 	if (!add)
2793 		return 0;
2794 
2795 	/* Add a new one to the list, at the tail */
2796 	mce = kzalloc(sizeof(*mce), GFP_KERNEL);
2797 	if (!mce)
2798 		return -ENOMEM;
2799 	mce->pcifunc = pcifunc;
2800 	if (!tail)
2801 		hlist_add_head(&mce->node, &mce_list->head);
2802 	else
2803 		hlist_add_behind(&mce->node, &tail->node);
2804 	mce_list->count++;
2805 	return 0;
2806 }
2807 
nix_update_mce_list(struct rvu * rvu,u16 pcifunc,struct nix_mce_list * mce_list,int mce_idx,int mcam_index,bool add)2808 int nix_update_mce_list(struct rvu *rvu, u16 pcifunc,
2809 			struct nix_mce_list *mce_list,
2810 			int mce_idx, int mcam_index, bool add)
2811 {
2812 	int err = 0, idx, next_idx, last_idx, blkaddr, npc_blkaddr;
2813 	struct npc_mcam *mcam = &rvu->hw->mcam;
2814 	struct nix_mcast *mcast;
2815 	struct nix_hw *nix_hw;
2816 	struct mce *mce;
2817 
2818 	if (!mce_list)
2819 		return -EINVAL;
2820 
2821 	/* Get this PF/VF func's MCE index */
2822 	idx = mce_idx + (pcifunc & RVU_PFVF_FUNC_MASK);
2823 
2824 	if (idx > (mce_idx + mce_list->max)) {
2825 		dev_err(rvu->dev,
2826 			"%s: Idx %d > max MCE idx %d, for PF%d bcast list\n",
2827 			__func__, idx, mce_list->max,
2828 			pcifunc >> RVU_PFVF_PF_SHIFT);
2829 		return -EINVAL;
2830 	}
2831 
2832 	err = nix_get_struct_ptrs(rvu, pcifunc, &nix_hw, &blkaddr);
2833 	if (err)
2834 		return err;
2835 
2836 	mcast = &nix_hw->mcast;
2837 	mutex_lock(&mcast->mce_lock);
2838 
2839 	err = nix_update_mce_list_entry(mce_list, pcifunc, add);
2840 	if (err)
2841 		goto end;
2842 
2843 	/* Disable MCAM entry in NPC */
2844 	if (!mce_list->count) {
2845 		npc_blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0);
2846 		npc_enable_mcam_entry(rvu, mcam, npc_blkaddr, mcam_index, false);
2847 		goto end;
2848 	}
2849 
2850 	/* Dump the updated list to HW */
2851 	idx = mce_idx;
2852 	last_idx = idx + mce_list->count - 1;
2853 	hlist_for_each_entry(mce, &mce_list->head, node) {
2854 		if (idx > last_idx)
2855 			break;
2856 
2857 		next_idx = idx + 1;
2858 		/* EOL should be set in last MCE */
2859 		err = nix_blk_setup_mce(rvu, nix_hw, idx, NIX_AQ_INSTOP_WRITE,
2860 					mce->pcifunc, next_idx,
2861 					(next_idx > last_idx) ? true : false);
2862 		if (err)
2863 			goto end;
2864 		idx++;
2865 	}
2866 
2867 end:
2868 	mutex_unlock(&mcast->mce_lock);
2869 	return err;
2870 }
2871 
nix_get_mce_list(struct rvu * rvu,u16 pcifunc,int type,struct nix_mce_list ** mce_list,int * mce_idx)2872 void nix_get_mce_list(struct rvu *rvu, u16 pcifunc, int type,
2873 		      struct nix_mce_list **mce_list, int *mce_idx)
2874 {
2875 	struct rvu_hwinfo *hw = rvu->hw;
2876 	struct rvu_pfvf *pfvf;
2877 
2878 	if (!hw->cap.nix_rx_multicast ||
2879 	    !is_pf_cgxmapped(rvu, rvu_get_pf(pcifunc & ~RVU_PFVF_FUNC_MASK))) {
2880 		*mce_list = NULL;
2881 		*mce_idx = 0;
2882 		return;
2883 	}
2884 
2885 	/* Get this PF/VF func's MCE index */
2886 	pfvf = rvu_get_pfvf(rvu, pcifunc & ~RVU_PFVF_FUNC_MASK);
2887 
2888 	if (type == NIXLF_BCAST_ENTRY) {
2889 		*mce_list = &pfvf->bcast_mce_list;
2890 		*mce_idx = pfvf->bcast_mce_idx;
2891 	} else if (type == NIXLF_ALLMULTI_ENTRY) {
2892 		*mce_list = &pfvf->mcast_mce_list;
2893 		*mce_idx = pfvf->mcast_mce_idx;
2894 	} else if (type == NIXLF_PROMISC_ENTRY) {
2895 		*mce_list = &pfvf->promisc_mce_list;
2896 		*mce_idx = pfvf->promisc_mce_idx;
2897 	}  else {
2898 		*mce_list = NULL;
2899 		*mce_idx = 0;
2900 	}
2901 }
2902 
nix_update_mce_rule(struct rvu * rvu,u16 pcifunc,int type,bool add)2903 static int nix_update_mce_rule(struct rvu *rvu, u16 pcifunc,
2904 			       int type, bool add)
2905 {
2906 	int err = 0, nixlf, blkaddr, mcam_index, mce_idx;
2907 	struct npc_mcam *mcam = &rvu->hw->mcam;
2908 	struct rvu_hwinfo *hw = rvu->hw;
2909 	struct nix_mce_list *mce_list;
2910 	int pf;
2911 
2912 	/* skip multicast pkt replication for AF's VFs & SDP links */
2913 	if (is_afvf(pcifunc) || is_sdp_pfvf(pcifunc))
2914 		return 0;
2915 
2916 	if (!hw->cap.nix_rx_multicast)
2917 		return 0;
2918 
2919 	pf = rvu_get_pf(pcifunc);
2920 	if (!is_pf_cgxmapped(rvu, pf))
2921 		return 0;
2922 
2923 	blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, pcifunc);
2924 	if (blkaddr < 0)
2925 		return -EINVAL;
2926 
2927 	nixlf = rvu_get_lf(rvu, &hw->block[blkaddr], pcifunc, 0);
2928 	if (nixlf < 0)
2929 		return -EINVAL;
2930 
2931 	nix_get_mce_list(rvu, pcifunc, type, &mce_list, &mce_idx);
2932 
2933 	mcam_index = npc_get_nixlf_mcam_index(mcam,
2934 					      pcifunc & ~RVU_PFVF_FUNC_MASK,
2935 					      nixlf, type);
2936 	err = nix_update_mce_list(rvu, pcifunc, mce_list,
2937 				  mce_idx, mcam_index, add);
2938 	return err;
2939 }
2940 
nix_setup_mce_tables(struct rvu * rvu,struct nix_hw * nix_hw)2941 static int nix_setup_mce_tables(struct rvu *rvu, struct nix_hw *nix_hw)
2942 {
2943 	struct nix_mcast *mcast = &nix_hw->mcast;
2944 	int err, pf, numvfs, idx;
2945 	struct rvu_pfvf *pfvf;
2946 	u16 pcifunc;
2947 	u64 cfg;
2948 
2949 	/* Skip PF0 (i.e AF) */
2950 	for (pf = 1; pf < (rvu->cgx_mapped_pfs + 1); pf++) {
2951 		cfg = rvu_read64(rvu, BLKADDR_RVUM, RVU_PRIV_PFX_CFG(pf));
2952 		/* If PF is not enabled, nothing to do */
2953 		if (!((cfg >> 20) & 0x01))
2954 			continue;
2955 		/* Get numVFs attached to this PF */
2956 		numvfs = (cfg >> 12) & 0xFF;
2957 
2958 		pfvf = &rvu->pf[pf];
2959 
2960 		/* This NIX0/1 block mapped to PF ? */
2961 		if (pfvf->nix_blkaddr != nix_hw->blkaddr)
2962 			continue;
2963 
2964 		/* save start idx of broadcast mce list */
2965 		pfvf->bcast_mce_idx = nix_alloc_mce_list(mcast, numvfs + 1);
2966 		nix_mce_list_init(&pfvf->bcast_mce_list, numvfs + 1);
2967 
2968 		/* save start idx of multicast mce list */
2969 		pfvf->mcast_mce_idx = nix_alloc_mce_list(mcast, numvfs + 1);
2970 		nix_mce_list_init(&pfvf->mcast_mce_list, numvfs + 1);
2971 
2972 		/* save the start idx of promisc mce list */
2973 		pfvf->promisc_mce_idx = nix_alloc_mce_list(mcast, numvfs + 1);
2974 		nix_mce_list_init(&pfvf->promisc_mce_list, numvfs + 1);
2975 
2976 		for (idx = 0; idx < (numvfs + 1); idx++) {
2977 			/* idx-0 is for PF, followed by VFs */
2978 			pcifunc = (pf << RVU_PFVF_PF_SHIFT);
2979 			pcifunc |= idx;
2980 			/* Add dummy entries now, so that we don't have to check
2981 			 * for whether AQ_OP should be INIT/WRITE later on.
2982 			 * Will be updated when a NIXLF is attached/detached to
2983 			 * these PF/VFs.
2984 			 */
2985 			err = nix_blk_setup_mce(rvu, nix_hw,
2986 						pfvf->bcast_mce_idx + idx,
2987 						NIX_AQ_INSTOP_INIT,
2988 						pcifunc, 0, true);
2989 			if (err)
2990 				return err;
2991 
2992 			/* add dummy entries to multicast mce list */
2993 			err = nix_blk_setup_mce(rvu, nix_hw,
2994 						pfvf->mcast_mce_idx + idx,
2995 						NIX_AQ_INSTOP_INIT,
2996 						pcifunc, 0, true);
2997 			if (err)
2998 				return err;
2999 
3000 			/* add dummy entries to promisc mce list */
3001 			err = nix_blk_setup_mce(rvu, nix_hw,
3002 						pfvf->promisc_mce_idx + idx,
3003 						NIX_AQ_INSTOP_INIT,
3004 						pcifunc, 0, true);
3005 			if (err)
3006 				return err;
3007 		}
3008 	}
3009 	return 0;
3010 }
3011 
nix_setup_mcast(struct rvu * rvu,struct nix_hw * nix_hw,int blkaddr)3012 static int nix_setup_mcast(struct rvu *rvu, struct nix_hw *nix_hw, int blkaddr)
3013 {
3014 	struct nix_mcast *mcast = &nix_hw->mcast;
3015 	struct rvu_hwinfo *hw = rvu->hw;
3016 	int err, size;
3017 
3018 	size = (rvu_read64(rvu, blkaddr, NIX_AF_CONST3) >> 16) & 0x0F;
3019 	size = (1ULL << size);
3020 
3021 	/* Alloc memory for multicast/mirror replication entries */
3022 	err = qmem_alloc(rvu->dev, &mcast->mce_ctx,
3023 			 (256UL << MC_TBL_SIZE), size);
3024 	if (err)
3025 		return -ENOMEM;
3026 
3027 	rvu_write64(rvu, blkaddr, NIX_AF_RX_MCAST_BASE,
3028 		    (u64)mcast->mce_ctx->iova);
3029 
3030 	/* Set max list length equal to max no of VFs per PF  + PF itself */
3031 	rvu_write64(rvu, blkaddr, NIX_AF_RX_MCAST_CFG,
3032 		    BIT_ULL(36) | (hw->max_vfs_per_pf << 4) | MC_TBL_SIZE);
3033 
3034 	/* Alloc memory for multicast replication buffers */
3035 	size = rvu_read64(rvu, blkaddr, NIX_AF_MC_MIRROR_CONST) & 0xFFFF;
3036 	err = qmem_alloc(rvu->dev, &mcast->mcast_buf,
3037 			 (8UL << MC_BUF_CNT), size);
3038 	if (err)
3039 		return -ENOMEM;
3040 
3041 	rvu_write64(rvu, blkaddr, NIX_AF_RX_MCAST_BUF_BASE,
3042 		    (u64)mcast->mcast_buf->iova);
3043 
3044 	/* Alloc pkind for NIX internal RX multicast/mirror replay */
3045 	mcast->replay_pkind = rvu_alloc_rsrc(&hw->pkind.rsrc);
3046 
3047 	rvu_write64(rvu, blkaddr, NIX_AF_RX_MCAST_BUF_CFG,
3048 		    BIT_ULL(63) | (mcast->replay_pkind << 24) |
3049 		    BIT_ULL(20) | MC_BUF_CNT);
3050 
3051 	mutex_init(&mcast->mce_lock);
3052 
3053 	return nix_setup_mce_tables(rvu, nix_hw);
3054 }
3055 
nix_setup_txvlan(struct rvu * rvu,struct nix_hw * nix_hw)3056 static int nix_setup_txvlan(struct rvu *rvu, struct nix_hw *nix_hw)
3057 {
3058 	struct nix_txvlan *vlan = &nix_hw->txvlan;
3059 	int err;
3060 
3061 	/* Allocate resource bimap for tx vtag def registers*/
3062 	vlan->rsrc.max = NIX_TX_VTAG_DEF_MAX;
3063 	err = rvu_alloc_bitmap(&vlan->rsrc);
3064 	if (err)
3065 		return -ENOMEM;
3066 
3067 	/* Alloc memory for saving entry to RVU PFFUNC allocation mapping */
3068 	vlan->entry2pfvf_map = devm_kcalloc(rvu->dev, vlan->rsrc.max,
3069 					    sizeof(u16), GFP_KERNEL);
3070 	if (!vlan->entry2pfvf_map)
3071 		goto free_mem;
3072 
3073 	mutex_init(&vlan->rsrc_lock);
3074 	return 0;
3075 
3076 free_mem:
3077 	kfree(vlan->rsrc.bmap);
3078 	return -ENOMEM;
3079 }
3080 
nix_setup_txschq(struct rvu * rvu,struct nix_hw * nix_hw,int blkaddr)3081 static int nix_setup_txschq(struct rvu *rvu, struct nix_hw *nix_hw, int blkaddr)
3082 {
3083 	struct nix_txsch *txsch;
3084 	int err, lvl, schq;
3085 	u64 cfg, reg;
3086 
3087 	/* Get scheduler queue count of each type and alloc
3088 	 * bitmap for each for alloc/free/attach operations.
3089 	 */
3090 	for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++) {
3091 		txsch = &nix_hw->txsch[lvl];
3092 		txsch->lvl = lvl;
3093 		switch (lvl) {
3094 		case NIX_TXSCH_LVL_SMQ:
3095 			reg = NIX_AF_MDQ_CONST;
3096 			break;
3097 		case NIX_TXSCH_LVL_TL4:
3098 			reg = NIX_AF_TL4_CONST;
3099 			break;
3100 		case NIX_TXSCH_LVL_TL3:
3101 			reg = NIX_AF_TL3_CONST;
3102 			break;
3103 		case NIX_TXSCH_LVL_TL2:
3104 			reg = NIX_AF_TL2_CONST;
3105 			break;
3106 		case NIX_TXSCH_LVL_TL1:
3107 			reg = NIX_AF_TL1_CONST;
3108 			break;
3109 		}
3110 		cfg = rvu_read64(rvu, blkaddr, reg);
3111 		txsch->schq.max = cfg & 0xFFFF;
3112 		err = rvu_alloc_bitmap(&txsch->schq);
3113 		if (err)
3114 			return err;
3115 
3116 		/* Allocate memory for scheduler queues to
3117 		 * PF/VF pcifunc mapping info.
3118 		 */
3119 		txsch->pfvf_map = devm_kcalloc(rvu->dev, txsch->schq.max,
3120 					       sizeof(u32), GFP_KERNEL);
3121 		if (!txsch->pfvf_map)
3122 			return -ENOMEM;
3123 		for (schq = 0; schq < txsch->schq.max; schq++)
3124 			txsch->pfvf_map[schq] = TXSCH_MAP(0, NIX_TXSCHQ_FREE);
3125 	}
3126 
3127 	/* Setup a default value of 8192 as DWRR MTU */
3128 	if (rvu->hw->cap.nix_common_dwrr_mtu) {
3129 		rvu_write64(rvu, blkaddr, NIX_AF_DWRR_RPM_MTU,
3130 			    convert_bytes_to_dwrr_mtu(8192));
3131 		rvu_write64(rvu, blkaddr, NIX_AF_DWRR_SDP_MTU,
3132 			    convert_bytes_to_dwrr_mtu(8192));
3133 	}
3134 
3135 	return 0;
3136 }
3137 
rvu_nix_reserve_mark_format(struct rvu * rvu,struct nix_hw * nix_hw,int blkaddr,u32 cfg)3138 int rvu_nix_reserve_mark_format(struct rvu *rvu, struct nix_hw *nix_hw,
3139 				int blkaddr, u32 cfg)
3140 {
3141 	int fmt_idx;
3142 
3143 	for (fmt_idx = 0; fmt_idx < nix_hw->mark_format.in_use; fmt_idx++) {
3144 		if (nix_hw->mark_format.cfg[fmt_idx] == cfg)
3145 			return fmt_idx;
3146 	}
3147 	if (fmt_idx >= nix_hw->mark_format.total)
3148 		return -ERANGE;
3149 
3150 	rvu_write64(rvu, blkaddr, NIX_AF_MARK_FORMATX_CTL(fmt_idx), cfg);
3151 	nix_hw->mark_format.cfg[fmt_idx] = cfg;
3152 	nix_hw->mark_format.in_use++;
3153 	return fmt_idx;
3154 }
3155 
nix_af_mark_format_setup(struct rvu * rvu,struct nix_hw * nix_hw,int blkaddr)3156 static int nix_af_mark_format_setup(struct rvu *rvu, struct nix_hw *nix_hw,
3157 				    int blkaddr)
3158 {
3159 	u64 cfgs[] = {
3160 		[NIX_MARK_CFG_IP_DSCP_RED]         = 0x10003,
3161 		[NIX_MARK_CFG_IP_DSCP_YELLOW]      = 0x11200,
3162 		[NIX_MARK_CFG_IP_DSCP_YELLOW_RED]  = 0x11203,
3163 		[NIX_MARK_CFG_IP_ECN_RED]          = 0x6000c,
3164 		[NIX_MARK_CFG_IP_ECN_YELLOW]       = 0x60c00,
3165 		[NIX_MARK_CFG_IP_ECN_YELLOW_RED]   = 0x60c0c,
3166 		[NIX_MARK_CFG_VLAN_DEI_RED]        = 0x30008,
3167 		[NIX_MARK_CFG_VLAN_DEI_YELLOW]     = 0x30800,
3168 		[NIX_MARK_CFG_VLAN_DEI_YELLOW_RED] = 0x30808,
3169 	};
3170 	int i, rc;
3171 	u64 total;
3172 
3173 	total = (rvu_read64(rvu, blkaddr, NIX_AF_PSE_CONST) & 0xFF00) >> 8;
3174 	nix_hw->mark_format.total = (u8)total;
3175 	nix_hw->mark_format.cfg = devm_kcalloc(rvu->dev, total, sizeof(u32),
3176 					       GFP_KERNEL);
3177 	if (!nix_hw->mark_format.cfg)
3178 		return -ENOMEM;
3179 	for (i = 0; i < NIX_MARK_CFG_MAX; i++) {
3180 		rc = rvu_nix_reserve_mark_format(rvu, nix_hw, blkaddr, cfgs[i]);
3181 		if (rc < 0)
3182 			dev_err(rvu->dev, "Err %d in setup mark format %d\n",
3183 				i, rc);
3184 	}
3185 
3186 	return 0;
3187 }
3188 
rvu_get_lbk_link_max_frs(struct rvu * rvu,u16 * max_mtu)3189 static void rvu_get_lbk_link_max_frs(struct rvu *rvu,  u16 *max_mtu)
3190 {
3191 	/* CN10K supports LBK FIFO size 72 KB */
3192 	if (rvu->hw->lbk_bufsize == 0x12000)
3193 		*max_mtu = CN10K_LBK_LINK_MAX_FRS;
3194 	else
3195 		*max_mtu = NIC_HW_MAX_FRS;
3196 }
3197 
rvu_get_lmac_link_max_frs(struct rvu * rvu,u16 * max_mtu)3198 static void rvu_get_lmac_link_max_frs(struct rvu *rvu, u16 *max_mtu)
3199 {
3200 	/* RPM supports FIFO len 128 KB */
3201 	if (rvu_cgx_get_fifolen(rvu) == 0x20000)
3202 		*max_mtu = CN10K_LMAC_LINK_MAX_FRS;
3203 	else
3204 		*max_mtu = NIC_HW_MAX_FRS;
3205 }
3206 
rvu_mbox_handler_nix_get_hw_info(struct rvu * rvu,struct msg_req * req,struct nix_hw_info * rsp)3207 int rvu_mbox_handler_nix_get_hw_info(struct rvu *rvu, struct msg_req *req,
3208 				     struct nix_hw_info *rsp)
3209 {
3210 	u16 pcifunc = req->hdr.pcifunc;
3211 	u64 dwrr_mtu;
3212 	int blkaddr;
3213 
3214 	blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, pcifunc);
3215 	if (blkaddr < 0)
3216 		return NIX_AF_ERR_AF_LF_INVALID;
3217 
3218 	if (is_afvf(pcifunc))
3219 		rvu_get_lbk_link_max_frs(rvu, &rsp->max_mtu);
3220 	else
3221 		rvu_get_lmac_link_max_frs(rvu, &rsp->max_mtu);
3222 
3223 	rsp->min_mtu = NIC_HW_MIN_FRS;
3224 
3225 	if (!rvu->hw->cap.nix_common_dwrr_mtu) {
3226 		/* Return '1' on OTx2 */
3227 		rsp->rpm_dwrr_mtu = 1;
3228 		rsp->sdp_dwrr_mtu = 1;
3229 		return 0;
3230 	}
3231 
3232 	dwrr_mtu = rvu_read64(rvu, BLKADDR_NIX0, NIX_AF_DWRR_RPM_MTU);
3233 	rsp->rpm_dwrr_mtu = convert_dwrr_mtu_to_bytes(dwrr_mtu);
3234 
3235 	dwrr_mtu = rvu_read64(rvu, BLKADDR_NIX0, NIX_AF_DWRR_SDP_MTU);
3236 	rsp->sdp_dwrr_mtu = convert_dwrr_mtu_to_bytes(dwrr_mtu);
3237 
3238 	return 0;
3239 }
3240 
rvu_mbox_handler_nix_stats_rst(struct rvu * rvu,struct msg_req * req,struct msg_rsp * rsp)3241 int rvu_mbox_handler_nix_stats_rst(struct rvu *rvu, struct msg_req *req,
3242 				   struct msg_rsp *rsp)
3243 {
3244 	u16 pcifunc = req->hdr.pcifunc;
3245 	int i, nixlf, blkaddr, err;
3246 	u64 stats;
3247 
3248 	err = nix_get_nixlf(rvu, pcifunc, &nixlf, &blkaddr);
3249 	if (err)
3250 		return err;
3251 
3252 	/* Get stats count supported by HW */
3253 	stats = rvu_read64(rvu, blkaddr, NIX_AF_CONST1);
3254 
3255 	/* Reset tx stats */
3256 	for (i = 0; i < ((stats >> 24) & 0xFF); i++)
3257 		rvu_write64(rvu, blkaddr, NIX_AF_LFX_TX_STATX(nixlf, i), 0);
3258 
3259 	/* Reset rx stats */
3260 	for (i = 0; i < ((stats >> 32) & 0xFF); i++)
3261 		rvu_write64(rvu, blkaddr, NIX_AF_LFX_RX_STATX(nixlf, i), 0);
3262 
3263 	return 0;
3264 }
3265 
3266 /* Returns the ALG index to be set into NPC_RX_ACTION */
get_flowkey_alg_idx(struct nix_hw * nix_hw,u32 flow_cfg)3267 static int get_flowkey_alg_idx(struct nix_hw *nix_hw, u32 flow_cfg)
3268 {
3269 	int i;
3270 
3271 	/* Scan over exiting algo entries to find a match */
3272 	for (i = 0; i < nix_hw->flowkey.in_use; i++)
3273 		if (nix_hw->flowkey.flowkey[i] == flow_cfg)
3274 			return i;
3275 
3276 	return -ERANGE;
3277 }
3278 
set_flowkey_fields(struct nix_rx_flowkey_alg * alg,u32 flow_cfg)3279 static int set_flowkey_fields(struct nix_rx_flowkey_alg *alg, u32 flow_cfg)
3280 {
3281 	int idx, nr_field, key_off, field_marker, keyoff_marker;
3282 	int max_key_off, max_bit_pos, group_member;
3283 	struct nix_rx_flowkey_alg *field;
3284 	struct nix_rx_flowkey_alg tmp;
3285 	u32 key_type, valid_key;
3286 	int l4_key_offset = 0;
3287 
3288 	if (!alg)
3289 		return -EINVAL;
3290 
3291 #define FIELDS_PER_ALG  5
3292 #define MAX_KEY_OFF	40
3293 	/* Clear all fields */
3294 	memset(alg, 0, sizeof(uint64_t) * FIELDS_PER_ALG);
3295 
3296 	/* Each of the 32 possible flow key algorithm definitions should
3297 	 * fall into above incremental config (except ALG0). Otherwise a
3298 	 * single NPC MCAM entry is not sufficient for supporting RSS.
3299 	 *
3300 	 * If a different definition or combination needed then NPC MCAM
3301 	 * has to be programmed to filter such pkts and it's action should
3302 	 * point to this definition to calculate flowtag or hash.
3303 	 *
3304 	 * The `for loop` goes over _all_ protocol field and the following
3305 	 * variables depicts the state machine forward progress logic.
3306 	 *
3307 	 * keyoff_marker - Enabled when hash byte length needs to be accounted
3308 	 * in field->key_offset update.
3309 	 * field_marker - Enabled when a new field needs to be selected.
3310 	 * group_member - Enabled when protocol is part of a group.
3311 	 */
3312 
3313 	keyoff_marker = 0; max_key_off = 0; group_member = 0;
3314 	nr_field = 0; key_off = 0; field_marker = 1;
3315 	field = &tmp; max_bit_pos = fls(flow_cfg);
3316 	for (idx = 0;
3317 	     idx < max_bit_pos && nr_field < FIELDS_PER_ALG &&
3318 	     key_off < MAX_KEY_OFF; idx++) {
3319 		key_type = BIT(idx);
3320 		valid_key = flow_cfg & key_type;
3321 		/* Found a field marker, reset the field values */
3322 		if (field_marker)
3323 			memset(&tmp, 0, sizeof(tmp));
3324 
3325 		field_marker = true;
3326 		keyoff_marker = true;
3327 		switch (key_type) {
3328 		case NIX_FLOW_KEY_TYPE_PORT:
3329 			field->sel_chan = true;
3330 			/* This should be set to 1, when SEL_CHAN is set */
3331 			field->bytesm1 = 1;
3332 			break;
3333 		case NIX_FLOW_KEY_TYPE_IPV4_PROTO:
3334 			field->lid = NPC_LID_LC;
3335 			field->hdr_offset = 9; /* offset */
3336 			field->bytesm1 = 0; /* 1 byte */
3337 			field->ltype_match = NPC_LT_LC_IP;
3338 			field->ltype_mask = 0xF;
3339 			break;
3340 		case NIX_FLOW_KEY_TYPE_IPV4:
3341 		case NIX_FLOW_KEY_TYPE_INNR_IPV4:
3342 			field->lid = NPC_LID_LC;
3343 			field->ltype_match = NPC_LT_LC_IP;
3344 			if (key_type == NIX_FLOW_KEY_TYPE_INNR_IPV4) {
3345 				field->lid = NPC_LID_LG;
3346 				field->ltype_match = NPC_LT_LG_TU_IP;
3347 			}
3348 			field->hdr_offset = 12; /* SIP offset */
3349 			field->bytesm1 = 7; /* SIP + DIP, 8 bytes */
3350 			field->ltype_mask = 0xF; /* Match only IPv4 */
3351 			keyoff_marker = false;
3352 			break;
3353 		case NIX_FLOW_KEY_TYPE_IPV6:
3354 		case NIX_FLOW_KEY_TYPE_INNR_IPV6:
3355 			field->lid = NPC_LID_LC;
3356 			field->ltype_match = NPC_LT_LC_IP6;
3357 			if (key_type == NIX_FLOW_KEY_TYPE_INNR_IPV6) {
3358 				field->lid = NPC_LID_LG;
3359 				field->ltype_match = NPC_LT_LG_TU_IP6;
3360 			}
3361 			field->hdr_offset = 8; /* SIP offset */
3362 			field->bytesm1 = 31; /* SIP + DIP, 32 bytes */
3363 			field->ltype_mask = 0xF; /* Match only IPv6 */
3364 			break;
3365 		case NIX_FLOW_KEY_TYPE_TCP:
3366 		case NIX_FLOW_KEY_TYPE_UDP:
3367 		case NIX_FLOW_KEY_TYPE_SCTP:
3368 		case NIX_FLOW_KEY_TYPE_INNR_TCP:
3369 		case NIX_FLOW_KEY_TYPE_INNR_UDP:
3370 		case NIX_FLOW_KEY_TYPE_INNR_SCTP:
3371 			field->lid = NPC_LID_LD;
3372 			if (key_type == NIX_FLOW_KEY_TYPE_INNR_TCP ||
3373 			    key_type == NIX_FLOW_KEY_TYPE_INNR_UDP ||
3374 			    key_type == NIX_FLOW_KEY_TYPE_INNR_SCTP)
3375 				field->lid = NPC_LID_LH;
3376 			field->bytesm1 = 3; /* Sport + Dport, 4 bytes */
3377 
3378 			/* Enum values for NPC_LID_LD and NPC_LID_LG are same,
3379 			 * so no need to change the ltype_match, just change
3380 			 * the lid for inner protocols
3381 			 */
3382 			BUILD_BUG_ON((int)NPC_LT_LD_TCP !=
3383 				     (int)NPC_LT_LH_TU_TCP);
3384 			BUILD_BUG_ON((int)NPC_LT_LD_UDP !=
3385 				     (int)NPC_LT_LH_TU_UDP);
3386 			BUILD_BUG_ON((int)NPC_LT_LD_SCTP !=
3387 				     (int)NPC_LT_LH_TU_SCTP);
3388 
3389 			if ((key_type == NIX_FLOW_KEY_TYPE_TCP ||
3390 			     key_type == NIX_FLOW_KEY_TYPE_INNR_TCP) &&
3391 			    valid_key) {
3392 				field->ltype_match |= NPC_LT_LD_TCP;
3393 				group_member = true;
3394 			} else if ((key_type == NIX_FLOW_KEY_TYPE_UDP ||
3395 				    key_type == NIX_FLOW_KEY_TYPE_INNR_UDP) &&
3396 				   valid_key) {
3397 				field->ltype_match |= NPC_LT_LD_UDP;
3398 				group_member = true;
3399 			} else if ((key_type == NIX_FLOW_KEY_TYPE_SCTP ||
3400 				    key_type == NIX_FLOW_KEY_TYPE_INNR_SCTP) &&
3401 				   valid_key) {
3402 				field->ltype_match |= NPC_LT_LD_SCTP;
3403 				group_member = true;
3404 			}
3405 			field->ltype_mask = ~field->ltype_match;
3406 			if (key_type == NIX_FLOW_KEY_TYPE_SCTP ||
3407 			    key_type == NIX_FLOW_KEY_TYPE_INNR_SCTP) {
3408 				/* Handle the case where any of the group item
3409 				 * is enabled in the group but not the final one
3410 				 */
3411 				if (group_member) {
3412 					valid_key = true;
3413 					group_member = false;
3414 				}
3415 			} else {
3416 				field_marker = false;
3417 				keyoff_marker = false;
3418 			}
3419 
3420 			/* TCP/UDP/SCTP and ESP/AH falls at same offset so
3421 			 * remember the TCP key offset of 40 byte hash key.
3422 			 */
3423 			if (key_type == NIX_FLOW_KEY_TYPE_TCP)
3424 				l4_key_offset = key_off;
3425 			break;
3426 		case NIX_FLOW_KEY_TYPE_NVGRE:
3427 			field->lid = NPC_LID_LD;
3428 			field->hdr_offset = 4; /* VSID offset */
3429 			field->bytesm1 = 2;
3430 			field->ltype_match = NPC_LT_LD_NVGRE;
3431 			field->ltype_mask = 0xF;
3432 			break;
3433 		case NIX_FLOW_KEY_TYPE_VXLAN:
3434 		case NIX_FLOW_KEY_TYPE_GENEVE:
3435 			field->lid = NPC_LID_LE;
3436 			field->bytesm1 = 2;
3437 			field->hdr_offset = 4;
3438 			field->ltype_mask = 0xF;
3439 			field_marker = false;
3440 			keyoff_marker = false;
3441 
3442 			if (key_type == NIX_FLOW_KEY_TYPE_VXLAN && valid_key) {
3443 				field->ltype_match |= NPC_LT_LE_VXLAN;
3444 				group_member = true;
3445 			}
3446 
3447 			if (key_type == NIX_FLOW_KEY_TYPE_GENEVE && valid_key) {
3448 				field->ltype_match |= NPC_LT_LE_GENEVE;
3449 				group_member = true;
3450 			}
3451 
3452 			if (key_type == NIX_FLOW_KEY_TYPE_GENEVE) {
3453 				if (group_member) {
3454 					field->ltype_mask = ~field->ltype_match;
3455 					field_marker = true;
3456 					keyoff_marker = true;
3457 					valid_key = true;
3458 					group_member = false;
3459 				}
3460 			}
3461 			break;
3462 		case NIX_FLOW_KEY_TYPE_ETH_DMAC:
3463 		case NIX_FLOW_KEY_TYPE_INNR_ETH_DMAC:
3464 			field->lid = NPC_LID_LA;
3465 			field->ltype_match = NPC_LT_LA_ETHER;
3466 			if (key_type == NIX_FLOW_KEY_TYPE_INNR_ETH_DMAC) {
3467 				field->lid = NPC_LID_LF;
3468 				field->ltype_match = NPC_LT_LF_TU_ETHER;
3469 			}
3470 			field->hdr_offset = 0;
3471 			field->bytesm1 = 5; /* DMAC 6 Byte */
3472 			field->ltype_mask = 0xF;
3473 			break;
3474 		case NIX_FLOW_KEY_TYPE_IPV6_EXT:
3475 			field->lid = NPC_LID_LC;
3476 			field->hdr_offset = 40; /* IPV6 hdr */
3477 			field->bytesm1 = 0; /* 1 Byte ext hdr*/
3478 			field->ltype_match = NPC_LT_LC_IP6_EXT;
3479 			field->ltype_mask = 0xF;
3480 			break;
3481 		case NIX_FLOW_KEY_TYPE_GTPU:
3482 			field->lid = NPC_LID_LE;
3483 			field->hdr_offset = 4;
3484 			field->bytesm1 = 3; /* 4 bytes TID*/
3485 			field->ltype_match = NPC_LT_LE_GTPU;
3486 			field->ltype_mask = 0xF;
3487 			break;
3488 		case NIX_FLOW_KEY_TYPE_VLAN:
3489 			field->lid = NPC_LID_LB;
3490 			field->hdr_offset = 2; /* Skip TPID (2-bytes) */
3491 			field->bytesm1 = 1; /* 2 Bytes (Actually 12 bits) */
3492 			field->ltype_match = NPC_LT_LB_CTAG;
3493 			field->ltype_mask = 0xF;
3494 			field->fn_mask = 1; /* Mask out the first nibble */
3495 			break;
3496 		case NIX_FLOW_KEY_TYPE_AH:
3497 		case NIX_FLOW_KEY_TYPE_ESP:
3498 			field->hdr_offset = 0;
3499 			field->bytesm1 = 7; /* SPI + sequence number */
3500 			field->ltype_mask = 0xF;
3501 			field->lid = NPC_LID_LE;
3502 			field->ltype_match = NPC_LT_LE_ESP;
3503 			if (key_type == NIX_FLOW_KEY_TYPE_AH) {
3504 				field->lid = NPC_LID_LD;
3505 				field->ltype_match = NPC_LT_LD_AH;
3506 				field->hdr_offset = 4;
3507 				keyoff_marker = false;
3508 			}
3509 			break;
3510 		}
3511 		field->ena = 1;
3512 
3513 		/* Found a valid flow key type */
3514 		if (valid_key) {
3515 			/* Use the key offset of TCP/UDP/SCTP fields
3516 			 * for ESP/AH fields.
3517 			 */
3518 			if (key_type == NIX_FLOW_KEY_TYPE_ESP ||
3519 			    key_type == NIX_FLOW_KEY_TYPE_AH)
3520 				key_off = l4_key_offset;
3521 			field->key_offset = key_off;
3522 			memcpy(&alg[nr_field], field, sizeof(*field));
3523 			max_key_off = max(max_key_off, field->bytesm1 + 1);
3524 
3525 			/* Found a field marker, get the next field */
3526 			if (field_marker)
3527 				nr_field++;
3528 		}
3529 
3530 		/* Found a keyoff marker, update the new key_off */
3531 		if (keyoff_marker) {
3532 			key_off += max_key_off;
3533 			max_key_off = 0;
3534 		}
3535 	}
3536 	/* Processed all the flow key types */
3537 	if (idx == max_bit_pos && key_off <= MAX_KEY_OFF)
3538 		return 0;
3539 	else
3540 		return NIX_AF_ERR_RSS_NOSPC_FIELD;
3541 }
3542 
reserve_flowkey_alg_idx(struct rvu * rvu,int blkaddr,u32 flow_cfg)3543 static int reserve_flowkey_alg_idx(struct rvu *rvu, int blkaddr, u32 flow_cfg)
3544 {
3545 	u64 field[FIELDS_PER_ALG];
3546 	struct nix_hw *hw;
3547 	int fid, rc;
3548 
3549 	hw = get_nix_hw(rvu->hw, blkaddr);
3550 	if (!hw)
3551 		return NIX_AF_ERR_INVALID_NIXBLK;
3552 
3553 	/* No room to add new flow hash algoritham */
3554 	if (hw->flowkey.in_use >= NIX_FLOW_KEY_ALG_MAX)
3555 		return NIX_AF_ERR_RSS_NOSPC_ALGO;
3556 
3557 	/* Generate algo fields for the given flow_cfg */
3558 	rc = set_flowkey_fields((struct nix_rx_flowkey_alg *)field, flow_cfg);
3559 	if (rc)
3560 		return rc;
3561 
3562 	/* Update ALGX_FIELDX register with generated fields */
3563 	for (fid = 0; fid < FIELDS_PER_ALG; fid++)
3564 		rvu_write64(rvu, blkaddr,
3565 			    NIX_AF_RX_FLOW_KEY_ALGX_FIELDX(hw->flowkey.in_use,
3566 							   fid), field[fid]);
3567 
3568 	/* Store the flow_cfg for futher lookup */
3569 	rc = hw->flowkey.in_use;
3570 	hw->flowkey.flowkey[rc] = flow_cfg;
3571 	hw->flowkey.in_use++;
3572 
3573 	return rc;
3574 }
3575 
rvu_mbox_handler_nix_rss_flowkey_cfg(struct rvu * rvu,struct nix_rss_flowkey_cfg * req,struct nix_rss_flowkey_cfg_rsp * rsp)3576 int rvu_mbox_handler_nix_rss_flowkey_cfg(struct rvu *rvu,
3577 					 struct nix_rss_flowkey_cfg *req,
3578 					 struct nix_rss_flowkey_cfg_rsp *rsp)
3579 {
3580 	u16 pcifunc = req->hdr.pcifunc;
3581 	int alg_idx, nixlf, blkaddr;
3582 	struct nix_hw *nix_hw;
3583 	int err;
3584 
3585 	err = nix_get_nixlf(rvu, pcifunc, &nixlf, &blkaddr);
3586 	if (err)
3587 		return err;
3588 
3589 	nix_hw = get_nix_hw(rvu->hw, blkaddr);
3590 	if (!nix_hw)
3591 		return NIX_AF_ERR_INVALID_NIXBLK;
3592 
3593 	alg_idx = get_flowkey_alg_idx(nix_hw, req->flowkey_cfg);
3594 	/* Failed to get algo index from the exiting list, reserve new  */
3595 	if (alg_idx < 0) {
3596 		alg_idx = reserve_flowkey_alg_idx(rvu, blkaddr,
3597 						  req->flowkey_cfg);
3598 		if (alg_idx < 0)
3599 			return alg_idx;
3600 	}
3601 	rsp->alg_idx = alg_idx;
3602 	rvu_npc_update_flowkey_alg_idx(rvu, pcifunc, nixlf, req->group,
3603 				       alg_idx, req->mcam_index);
3604 	return 0;
3605 }
3606 
nix_rx_flowkey_alg_cfg(struct rvu * rvu,int blkaddr)3607 static int nix_rx_flowkey_alg_cfg(struct rvu *rvu, int blkaddr)
3608 {
3609 	u32 flowkey_cfg, minkey_cfg;
3610 	int alg, fid, rc;
3611 
3612 	/* Disable all flow key algx fieldx */
3613 	for (alg = 0; alg < NIX_FLOW_KEY_ALG_MAX; alg++) {
3614 		for (fid = 0; fid < FIELDS_PER_ALG; fid++)
3615 			rvu_write64(rvu, blkaddr,
3616 				    NIX_AF_RX_FLOW_KEY_ALGX_FIELDX(alg, fid),
3617 				    0);
3618 	}
3619 
3620 	/* IPv4/IPv6 SIP/DIPs */
3621 	flowkey_cfg = NIX_FLOW_KEY_TYPE_IPV4 | NIX_FLOW_KEY_TYPE_IPV6;
3622 	rc = reserve_flowkey_alg_idx(rvu, blkaddr, flowkey_cfg);
3623 	if (rc < 0)
3624 		return rc;
3625 
3626 	/* TCPv4/v6 4-tuple, SIP, DIP, Sport, Dport */
3627 	minkey_cfg = flowkey_cfg;
3628 	flowkey_cfg = minkey_cfg | NIX_FLOW_KEY_TYPE_TCP;
3629 	rc = reserve_flowkey_alg_idx(rvu, blkaddr, flowkey_cfg);
3630 	if (rc < 0)
3631 		return rc;
3632 
3633 	/* UDPv4/v6 4-tuple, SIP, DIP, Sport, Dport */
3634 	flowkey_cfg = minkey_cfg | NIX_FLOW_KEY_TYPE_UDP;
3635 	rc = reserve_flowkey_alg_idx(rvu, blkaddr, flowkey_cfg);
3636 	if (rc < 0)
3637 		return rc;
3638 
3639 	/* SCTPv4/v6 4-tuple, SIP, DIP, Sport, Dport */
3640 	flowkey_cfg = minkey_cfg | NIX_FLOW_KEY_TYPE_SCTP;
3641 	rc = reserve_flowkey_alg_idx(rvu, blkaddr, flowkey_cfg);
3642 	if (rc < 0)
3643 		return rc;
3644 
3645 	/* TCP/UDP v4/v6 4-tuple, rest IP pkts 2-tuple */
3646 	flowkey_cfg = minkey_cfg | NIX_FLOW_KEY_TYPE_TCP |
3647 			NIX_FLOW_KEY_TYPE_UDP;
3648 	rc = reserve_flowkey_alg_idx(rvu, blkaddr, flowkey_cfg);
3649 	if (rc < 0)
3650 		return rc;
3651 
3652 	/* TCP/SCTP v4/v6 4-tuple, rest IP pkts 2-tuple */
3653 	flowkey_cfg = minkey_cfg | NIX_FLOW_KEY_TYPE_TCP |
3654 			NIX_FLOW_KEY_TYPE_SCTP;
3655 	rc = reserve_flowkey_alg_idx(rvu, blkaddr, flowkey_cfg);
3656 	if (rc < 0)
3657 		return rc;
3658 
3659 	/* UDP/SCTP v4/v6 4-tuple, rest IP pkts 2-tuple */
3660 	flowkey_cfg = minkey_cfg | NIX_FLOW_KEY_TYPE_UDP |
3661 			NIX_FLOW_KEY_TYPE_SCTP;
3662 	rc = reserve_flowkey_alg_idx(rvu, blkaddr, flowkey_cfg);
3663 	if (rc < 0)
3664 		return rc;
3665 
3666 	/* TCP/UDP/SCTP v4/v6 4-tuple, rest IP pkts 2-tuple */
3667 	flowkey_cfg = minkey_cfg | NIX_FLOW_KEY_TYPE_TCP |
3668 		      NIX_FLOW_KEY_TYPE_UDP | NIX_FLOW_KEY_TYPE_SCTP;
3669 	rc = reserve_flowkey_alg_idx(rvu, blkaddr, flowkey_cfg);
3670 	if (rc < 0)
3671 		return rc;
3672 
3673 	return 0;
3674 }
3675 
rvu_mbox_handler_nix_set_mac_addr(struct rvu * rvu,struct nix_set_mac_addr * req,struct msg_rsp * rsp)3676 int rvu_mbox_handler_nix_set_mac_addr(struct rvu *rvu,
3677 				      struct nix_set_mac_addr *req,
3678 				      struct msg_rsp *rsp)
3679 {
3680 	bool from_vf = req->hdr.pcifunc & RVU_PFVF_FUNC_MASK;
3681 	u16 pcifunc = req->hdr.pcifunc;
3682 	int blkaddr, nixlf, err;
3683 	struct rvu_pfvf *pfvf;
3684 
3685 	err = nix_get_nixlf(rvu, pcifunc, &nixlf, &blkaddr);
3686 	if (err)
3687 		return err;
3688 
3689 	pfvf = rvu_get_pfvf(rvu, pcifunc);
3690 
3691 	/* untrusted VF can't overwrite admin(PF) changes */
3692 	if (!test_bit(PF_SET_VF_TRUSTED, &pfvf->flags) &&
3693 	    (from_vf && test_bit(PF_SET_VF_MAC, &pfvf->flags))) {
3694 		dev_warn(rvu->dev,
3695 			 "MAC address set by admin(PF) cannot be overwritten by untrusted VF");
3696 		return -EPERM;
3697 	}
3698 
3699 	ether_addr_copy(pfvf->mac_addr, req->mac_addr);
3700 
3701 	rvu_npc_install_ucast_entry(rvu, pcifunc, nixlf,
3702 				    pfvf->rx_chan_base, req->mac_addr);
3703 
3704 	if (test_bit(PF_SET_VF_TRUSTED, &pfvf->flags) && from_vf)
3705 		ether_addr_copy(pfvf->default_mac, req->mac_addr);
3706 
3707 	rvu_switch_update_rules(rvu, pcifunc);
3708 
3709 	return 0;
3710 }
3711 
rvu_mbox_handler_nix_get_mac_addr(struct rvu * rvu,struct msg_req * req,struct nix_get_mac_addr_rsp * rsp)3712 int rvu_mbox_handler_nix_get_mac_addr(struct rvu *rvu,
3713 				      struct msg_req *req,
3714 				      struct nix_get_mac_addr_rsp *rsp)
3715 {
3716 	u16 pcifunc = req->hdr.pcifunc;
3717 	struct rvu_pfvf *pfvf;
3718 
3719 	if (!is_nixlf_attached(rvu, pcifunc))
3720 		return NIX_AF_ERR_AF_LF_INVALID;
3721 
3722 	pfvf = rvu_get_pfvf(rvu, pcifunc);
3723 
3724 	ether_addr_copy(rsp->mac_addr, pfvf->mac_addr);
3725 
3726 	return 0;
3727 }
3728 
rvu_mbox_handler_nix_set_rx_mode(struct rvu * rvu,struct nix_rx_mode * req,struct msg_rsp * rsp)3729 int rvu_mbox_handler_nix_set_rx_mode(struct rvu *rvu, struct nix_rx_mode *req,
3730 				     struct msg_rsp *rsp)
3731 {
3732 	bool allmulti, promisc, nix_rx_multicast;
3733 	u16 pcifunc = req->hdr.pcifunc;
3734 	struct rvu_pfvf *pfvf;
3735 	int nixlf, err;
3736 
3737 	pfvf = rvu_get_pfvf(rvu, pcifunc);
3738 	promisc = req->mode & NIX_RX_MODE_PROMISC ? true : false;
3739 	allmulti = req->mode & NIX_RX_MODE_ALLMULTI ? true : false;
3740 	pfvf->use_mce_list = req->mode & NIX_RX_MODE_USE_MCE ? true : false;
3741 
3742 	nix_rx_multicast = rvu->hw->cap.nix_rx_multicast & pfvf->use_mce_list;
3743 
3744 	if (is_vf(pcifunc) && !nix_rx_multicast &&
3745 	    (promisc || allmulti)) {
3746 		dev_warn_ratelimited(rvu->dev,
3747 				     "VF promisc/multicast not supported\n");
3748 		return 0;
3749 	}
3750 
3751 	/* untrusted VF can't configure promisc/allmulti */
3752 	if (is_vf(pcifunc) && !test_bit(PF_SET_VF_TRUSTED, &pfvf->flags) &&
3753 	    (promisc || allmulti))
3754 		return 0;
3755 
3756 	err = nix_get_nixlf(rvu, pcifunc, &nixlf, NULL);
3757 	if (err)
3758 		return err;
3759 
3760 	if (nix_rx_multicast) {
3761 		/* add/del this PF_FUNC to/from mcast pkt replication list */
3762 		err = nix_update_mce_rule(rvu, pcifunc, NIXLF_ALLMULTI_ENTRY,
3763 					  allmulti);
3764 		if (err) {
3765 			dev_err(rvu->dev,
3766 				"Failed to update pcifunc 0x%x to multicast list\n",
3767 				pcifunc);
3768 			return err;
3769 		}
3770 
3771 		/* add/del this PF_FUNC to/from promisc pkt replication list */
3772 		err = nix_update_mce_rule(rvu, pcifunc, NIXLF_PROMISC_ENTRY,
3773 					  promisc);
3774 		if (err) {
3775 			dev_err(rvu->dev,
3776 				"Failed to update pcifunc 0x%x to promisc list\n",
3777 				pcifunc);
3778 			return err;
3779 		}
3780 	}
3781 
3782 	/* install/uninstall allmulti entry */
3783 	if (allmulti) {
3784 		rvu_npc_install_allmulti_entry(rvu, pcifunc, nixlf,
3785 					       pfvf->rx_chan_base);
3786 	} else {
3787 		if (!nix_rx_multicast)
3788 			rvu_npc_enable_allmulti_entry(rvu, pcifunc, nixlf, false);
3789 	}
3790 
3791 	/* install/uninstall promisc entry */
3792 	if (promisc) {
3793 		rvu_npc_install_promisc_entry(rvu, pcifunc, nixlf,
3794 					      pfvf->rx_chan_base,
3795 					      pfvf->rx_chan_cnt);
3796 
3797 		if (rvu_npc_exact_has_match_table(rvu))
3798 			rvu_npc_exact_promisc_enable(rvu, pcifunc);
3799 	} else {
3800 		if (!nix_rx_multicast)
3801 			rvu_npc_enable_promisc_entry(rvu, pcifunc, nixlf, false);
3802 
3803 		if (rvu_npc_exact_has_match_table(rvu))
3804 			rvu_npc_exact_promisc_disable(rvu, pcifunc);
3805 	}
3806 
3807 	return 0;
3808 }
3809 
nix_find_link_frs(struct rvu * rvu,struct nix_frs_cfg * req,u16 pcifunc)3810 static void nix_find_link_frs(struct rvu *rvu,
3811 			      struct nix_frs_cfg *req, u16 pcifunc)
3812 {
3813 	int pf = rvu_get_pf(pcifunc);
3814 	struct rvu_pfvf *pfvf;
3815 	int maxlen, minlen;
3816 	int numvfs, hwvf;
3817 	int vf;
3818 
3819 	/* Update with requester's min/max lengths */
3820 	pfvf = rvu_get_pfvf(rvu, pcifunc);
3821 	pfvf->maxlen = req->maxlen;
3822 	if (req->update_minlen)
3823 		pfvf->minlen = req->minlen;
3824 
3825 	maxlen = req->maxlen;
3826 	minlen = req->update_minlen ? req->minlen : 0;
3827 
3828 	/* Get this PF's numVFs and starting hwvf */
3829 	rvu_get_pf_numvfs(rvu, pf, &numvfs, &hwvf);
3830 
3831 	/* For each VF, compare requested max/minlen */
3832 	for (vf = 0; vf < numvfs; vf++) {
3833 		pfvf =  &rvu->hwvf[hwvf + vf];
3834 		if (pfvf->maxlen > maxlen)
3835 			maxlen = pfvf->maxlen;
3836 		if (req->update_minlen &&
3837 		    pfvf->minlen && pfvf->minlen < minlen)
3838 			minlen = pfvf->minlen;
3839 	}
3840 
3841 	/* Compare requested max/minlen with PF's max/minlen */
3842 	pfvf = &rvu->pf[pf];
3843 	if (pfvf->maxlen > maxlen)
3844 		maxlen = pfvf->maxlen;
3845 	if (req->update_minlen &&
3846 	    pfvf->minlen && pfvf->minlen < minlen)
3847 		minlen = pfvf->minlen;
3848 
3849 	/* Update the request with max/min PF's and it's VF's max/min */
3850 	req->maxlen = maxlen;
3851 	if (req->update_minlen)
3852 		req->minlen = minlen;
3853 }
3854 
3855 static int
nix_config_link_credits(struct rvu * rvu,int blkaddr,int link,u16 pcifunc,u64 tx_credits)3856 nix_config_link_credits(struct rvu *rvu, int blkaddr, int link,
3857 			u16 pcifunc, u64 tx_credits)
3858 {
3859 	struct rvu_hwinfo *hw = rvu->hw;
3860 	int pf = rvu_get_pf(pcifunc);
3861 	u8 cgx_id = 0, lmac_id = 0;
3862 	unsigned long poll_tmo;
3863 	bool restore_tx_en = 0;
3864 	struct nix_hw *nix_hw;
3865 	u64 cfg, sw_xoff = 0;
3866 	u32 schq = 0;
3867 	u32 credits;
3868 	int rc;
3869 
3870 	nix_hw = get_nix_hw(rvu->hw, blkaddr);
3871 	if (!nix_hw)
3872 		return NIX_AF_ERR_INVALID_NIXBLK;
3873 
3874 	if (tx_credits == nix_hw->tx_credits[link])
3875 		return 0;
3876 
3877 	/* Enable cgx tx if disabled for credits to be back */
3878 	if (is_pf_cgxmapped(rvu, pf)) {
3879 		rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
3880 		restore_tx_en = !rvu_cgx_config_tx(rvu_cgx_pdata(cgx_id, rvu),
3881 						    lmac_id, true);
3882 	}
3883 
3884 	mutex_lock(&rvu->rsrc_lock);
3885 	/* Disable new traffic to link */
3886 	if (hw->cap.nix_shaping) {
3887 		schq = nix_get_tx_link(rvu, pcifunc);
3888 		sw_xoff = rvu_read64(rvu, blkaddr, NIX_AF_TL1X_SW_XOFF(schq));
3889 		rvu_write64(rvu, blkaddr,
3890 			    NIX_AF_TL1X_SW_XOFF(schq), BIT_ULL(0));
3891 	}
3892 
3893 	rc = NIX_AF_ERR_LINK_CREDITS;
3894 	poll_tmo = jiffies + usecs_to_jiffies(200000);
3895 	/* Wait for credits to return */
3896 	do {
3897 		if (time_after(jiffies, poll_tmo))
3898 			goto exit;
3899 		usleep_range(100, 200);
3900 
3901 		cfg = rvu_read64(rvu, blkaddr,
3902 				 NIX_AF_TX_LINKX_NORM_CREDIT(link));
3903 		credits = (cfg >> 12) & 0xFFFFFULL;
3904 	} while (credits != nix_hw->tx_credits[link]);
3905 
3906 	cfg &= ~(0xFFFFFULL << 12);
3907 	cfg |= (tx_credits << 12);
3908 	rvu_write64(rvu, blkaddr, NIX_AF_TX_LINKX_NORM_CREDIT(link), cfg);
3909 	rc = 0;
3910 
3911 	nix_hw->tx_credits[link] = tx_credits;
3912 
3913 exit:
3914 	/* Enable traffic back */
3915 	if (hw->cap.nix_shaping && !sw_xoff)
3916 		rvu_write64(rvu, blkaddr, NIX_AF_TL1X_SW_XOFF(schq), 0);
3917 
3918 	/* Restore state of cgx tx */
3919 	if (restore_tx_en)
3920 		rvu_cgx_config_tx(rvu_cgx_pdata(cgx_id, rvu), lmac_id, false);
3921 
3922 	mutex_unlock(&rvu->rsrc_lock);
3923 	return rc;
3924 }
3925 
rvu_mbox_handler_nix_set_hw_frs(struct rvu * rvu,struct nix_frs_cfg * req,struct msg_rsp * rsp)3926 int rvu_mbox_handler_nix_set_hw_frs(struct rvu *rvu, struct nix_frs_cfg *req,
3927 				    struct msg_rsp *rsp)
3928 {
3929 	struct rvu_hwinfo *hw = rvu->hw;
3930 	u16 pcifunc = req->hdr.pcifunc;
3931 	int pf = rvu_get_pf(pcifunc);
3932 	int blkaddr, schq, link = -1;
3933 	struct nix_txsch *txsch;
3934 	u64 cfg, lmac_fifo_len;
3935 	struct nix_hw *nix_hw;
3936 	struct rvu_pfvf *pfvf;
3937 	u8 cgx = 0, lmac = 0;
3938 	u16 max_mtu;
3939 
3940 	blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, pcifunc);
3941 	if (blkaddr < 0)
3942 		return NIX_AF_ERR_AF_LF_INVALID;
3943 
3944 	nix_hw = get_nix_hw(rvu->hw, blkaddr);
3945 	if (!nix_hw)
3946 		return NIX_AF_ERR_INVALID_NIXBLK;
3947 
3948 	if (is_afvf(pcifunc))
3949 		rvu_get_lbk_link_max_frs(rvu, &max_mtu);
3950 	else
3951 		rvu_get_lmac_link_max_frs(rvu, &max_mtu);
3952 
3953 	if (!req->sdp_link && req->maxlen > max_mtu)
3954 		return NIX_AF_ERR_FRS_INVALID;
3955 
3956 	if (req->update_minlen && req->minlen < NIC_HW_MIN_FRS)
3957 		return NIX_AF_ERR_FRS_INVALID;
3958 
3959 	/* Check if requester wants to update SMQ's */
3960 	if (!req->update_smq)
3961 		goto rx_frscfg;
3962 
3963 	/* Update min/maxlen in each of the SMQ attached to this PF/VF */
3964 	txsch = &nix_hw->txsch[NIX_TXSCH_LVL_SMQ];
3965 	mutex_lock(&rvu->rsrc_lock);
3966 	for (schq = 0; schq < txsch->schq.max; schq++) {
3967 		if (TXSCH_MAP_FUNC(txsch->pfvf_map[schq]) != pcifunc)
3968 			continue;
3969 		cfg = rvu_read64(rvu, blkaddr, NIX_AF_SMQX_CFG(schq));
3970 		cfg = (cfg & ~(0xFFFFULL << 8)) | ((u64)req->maxlen << 8);
3971 		if (req->update_minlen)
3972 			cfg = (cfg & ~0x7FULL) | ((u64)req->minlen & 0x7F);
3973 		rvu_write64(rvu, blkaddr, NIX_AF_SMQX_CFG(schq), cfg);
3974 	}
3975 	mutex_unlock(&rvu->rsrc_lock);
3976 
3977 rx_frscfg:
3978 	/* Check if config is for SDP link */
3979 	if (req->sdp_link) {
3980 		if (!hw->sdp_links)
3981 			return NIX_AF_ERR_RX_LINK_INVALID;
3982 		link = hw->cgx_links + hw->lbk_links;
3983 		goto linkcfg;
3984 	}
3985 
3986 	/* Check if the request is from CGX mapped RVU PF */
3987 	if (is_pf_cgxmapped(rvu, pf)) {
3988 		/* Get CGX and LMAC to which this PF is mapped and find link */
3989 		rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx, &lmac);
3990 		link = (cgx * hw->lmac_per_cgx) + lmac;
3991 	} else if (pf == 0) {
3992 		/* For VFs of PF0 ingress is LBK port, so config LBK link */
3993 		pfvf = rvu_get_pfvf(rvu, pcifunc);
3994 		link = hw->cgx_links + pfvf->lbkid;
3995 	}
3996 
3997 	if (link < 0)
3998 		return NIX_AF_ERR_RX_LINK_INVALID;
3999 
4000 	nix_find_link_frs(rvu, req, pcifunc);
4001 
4002 linkcfg:
4003 	cfg = rvu_read64(rvu, blkaddr, NIX_AF_RX_LINKX_CFG(link));
4004 	cfg = (cfg & ~(0xFFFFULL << 16)) | ((u64)req->maxlen << 16);
4005 	if (req->update_minlen)
4006 		cfg = (cfg & ~0xFFFFULL) | req->minlen;
4007 	rvu_write64(rvu, blkaddr, NIX_AF_RX_LINKX_CFG(link), cfg);
4008 
4009 	if (req->sdp_link || pf == 0)
4010 		return 0;
4011 
4012 	/* Update transmit credits for CGX links */
4013 	lmac_fifo_len = rvu_cgx_get_lmac_fifolen(rvu, cgx, lmac);
4014 	if (!lmac_fifo_len) {
4015 		dev_err(rvu->dev,
4016 			"%s: Failed to get CGX/RPM%d:LMAC%d FIFO size\n",
4017 			__func__, cgx, lmac);
4018 		return 0;
4019 	}
4020 	return nix_config_link_credits(rvu, blkaddr, link, pcifunc,
4021 				       (lmac_fifo_len - req->maxlen) / 16);
4022 }
4023 
rvu_mbox_handler_nix_set_rx_cfg(struct rvu * rvu,struct nix_rx_cfg * req,struct msg_rsp * rsp)4024 int rvu_mbox_handler_nix_set_rx_cfg(struct rvu *rvu, struct nix_rx_cfg *req,
4025 				    struct msg_rsp *rsp)
4026 {
4027 	int nixlf, blkaddr, err;
4028 	u64 cfg;
4029 
4030 	err = nix_get_nixlf(rvu, req->hdr.pcifunc, &nixlf, &blkaddr);
4031 	if (err)
4032 		return err;
4033 
4034 	cfg = rvu_read64(rvu, blkaddr, NIX_AF_LFX_RX_CFG(nixlf));
4035 	/* Set the interface configuration */
4036 	if (req->len_verify & BIT(0))
4037 		cfg |= BIT_ULL(41);
4038 	else
4039 		cfg &= ~BIT_ULL(41);
4040 
4041 	if (req->len_verify & BIT(1))
4042 		cfg |= BIT_ULL(40);
4043 	else
4044 		cfg &= ~BIT_ULL(40);
4045 
4046 	if (req->csum_verify & BIT(0))
4047 		cfg |= BIT_ULL(37);
4048 	else
4049 		cfg &= ~BIT_ULL(37);
4050 
4051 	rvu_write64(rvu, blkaddr, NIX_AF_LFX_RX_CFG(nixlf), cfg);
4052 
4053 	return 0;
4054 }
4055 
rvu_get_lbk_link_credits(struct rvu * rvu,u16 lbk_max_frs)4056 static u64 rvu_get_lbk_link_credits(struct rvu *rvu, u16 lbk_max_frs)
4057 {
4058 	/* CN10k supports 72KB FIFO size and max packet size of 64k */
4059 	if (rvu->hw->lbk_bufsize == 0x12000)
4060 		return (rvu->hw->lbk_bufsize - lbk_max_frs) / 16;
4061 
4062 	return 1600; /* 16 * max LBK datarate = 16 * 100Gbps */
4063 }
4064 
nix_link_config(struct rvu * rvu,int blkaddr,struct nix_hw * nix_hw)4065 static void nix_link_config(struct rvu *rvu, int blkaddr,
4066 			    struct nix_hw *nix_hw)
4067 {
4068 	struct rvu_hwinfo *hw = rvu->hw;
4069 	int cgx, lmac_cnt, slink, link;
4070 	u16 lbk_max_frs, lmac_max_frs;
4071 	unsigned long lmac_bmap;
4072 	u64 tx_credits, cfg;
4073 	u64 lmac_fifo_len;
4074 	int iter;
4075 
4076 	rvu_get_lbk_link_max_frs(rvu, &lbk_max_frs);
4077 	rvu_get_lmac_link_max_frs(rvu, &lmac_max_frs);
4078 
4079 	/* Set default min/max packet lengths allowed on NIX Rx links.
4080 	 *
4081 	 * With HW reset minlen value of 60byte, HW will treat ARP pkts
4082 	 * as undersize and report them to SW as error pkts, hence
4083 	 * setting it to 40 bytes.
4084 	 */
4085 	for (link = 0; link < hw->cgx_links; link++) {
4086 		rvu_write64(rvu, blkaddr, NIX_AF_RX_LINKX_CFG(link),
4087 				((u64)lmac_max_frs << 16) | NIC_HW_MIN_FRS);
4088 	}
4089 
4090 	for (link = hw->cgx_links; link < hw->lbk_links; link++) {
4091 		rvu_write64(rvu, blkaddr, NIX_AF_RX_LINKX_CFG(link),
4092 			    ((u64)lbk_max_frs << 16) | NIC_HW_MIN_FRS);
4093 	}
4094 	if (hw->sdp_links) {
4095 		link = hw->cgx_links + hw->lbk_links;
4096 		rvu_write64(rvu, blkaddr, NIX_AF_RX_LINKX_CFG(link),
4097 			    SDP_HW_MAX_FRS << 16 | NIC_HW_MIN_FRS);
4098 	}
4099 
4100 	/* Set credits for Tx links assuming max packet length allowed.
4101 	 * This will be reconfigured based on MTU set for PF/VF.
4102 	 */
4103 	for (cgx = 0; cgx < hw->cgx; cgx++) {
4104 		lmac_cnt = cgx_get_lmac_cnt(rvu_cgx_pdata(cgx, rvu));
4105 		/* Skip when cgx is not available or lmac cnt is zero */
4106 		if (lmac_cnt <= 0)
4107 			continue;
4108 		slink = cgx * hw->lmac_per_cgx;
4109 
4110 		/* Get LMAC id's from bitmap */
4111 		lmac_bmap = cgx_get_lmac_bmap(rvu_cgx_pdata(cgx, rvu));
4112 		for_each_set_bit(iter, &lmac_bmap, MAX_LMAC_PER_CGX) {
4113 			lmac_fifo_len = rvu_cgx_get_lmac_fifolen(rvu, cgx, iter);
4114 			if (!lmac_fifo_len) {
4115 				dev_err(rvu->dev,
4116 					"%s: Failed to get CGX/RPM%d:LMAC%d FIFO size\n",
4117 					__func__, cgx, iter);
4118 				continue;
4119 			}
4120 			tx_credits = (lmac_fifo_len - lmac_max_frs) / 16;
4121 			/* Enable credits and set credit pkt count to max allowed */
4122 			cfg =  (tx_credits << 12) | (0x1FF << 2) | BIT_ULL(1);
4123 
4124 			link = iter + slink;
4125 			nix_hw->tx_credits[link] = tx_credits;
4126 			rvu_write64(rvu, blkaddr,
4127 				    NIX_AF_TX_LINKX_NORM_CREDIT(link), cfg);
4128 		}
4129 	}
4130 
4131 	/* Set Tx credits for LBK link */
4132 	slink = hw->cgx_links;
4133 	for (link = slink; link < (slink + hw->lbk_links); link++) {
4134 		tx_credits = rvu_get_lbk_link_credits(rvu, lbk_max_frs);
4135 		nix_hw->tx_credits[link] = tx_credits;
4136 		/* Enable credits and set credit pkt count to max allowed */
4137 		tx_credits =  (tx_credits << 12) | (0x1FF << 2) | BIT_ULL(1);
4138 		rvu_write64(rvu, blkaddr,
4139 			    NIX_AF_TX_LINKX_NORM_CREDIT(link), tx_credits);
4140 	}
4141 }
4142 
nix_calibrate_x2p(struct rvu * rvu,int blkaddr)4143 static int nix_calibrate_x2p(struct rvu *rvu, int blkaddr)
4144 {
4145 	int idx, err;
4146 	u64 status;
4147 
4148 	/* Start X2P bus calibration */
4149 	rvu_write64(rvu, blkaddr, NIX_AF_CFG,
4150 		    rvu_read64(rvu, blkaddr, NIX_AF_CFG) | BIT_ULL(9));
4151 	/* Wait for calibration to complete */
4152 	err = rvu_poll_reg(rvu, blkaddr,
4153 			   NIX_AF_STATUS, BIT_ULL(10), false);
4154 	if (err) {
4155 		dev_err(rvu->dev, "NIX X2P bus calibration failed\n");
4156 		return err;
4157 	}
4158 
4159 	status = rvu_read64(rvu, blkaddr, NIX_AF_STATUS);
4160 	/* Check if CGX devices are ready */
4161 	for (idx = 0; idx < rvu->cgx_cnt_max; idx++) {
4162 		/* Skip when cgx port is not available */
4163 		if (!rvu_cgx_pdata(idx, rvu) ||
4164 		    (status & (BIT_ULL(16 + idx))))
4165 			continue;
4166 		dev_err(rvu->dev,
4167 			"CGX%d didn't respond to NIX X2P calibration\n", idx);
4168 		err = -EBUSY;
4169 	}
4170 
4171 	/* Check if LBK is ready */
4172 	if (!(status & BIT_ULL(19))) {
4173 		dev_err(rvu->dev,
4174 			"LBK didn't respond to NIX X2P calibration\n");
4175 		err = -EBUSY;
4176 	}
4177 
4178 	/* Clear 'calibrate_x2p' bit */
4179 	rvu_write64(rvu, blkaddr, NIX_AF_CFG,
4180 		    rvu_read64(rvu, blkaddr, NIX_AF_CFG) & ~BIT_ULL(9));
4181 	if (err || (status & 0x3FFULL))
4182 		dev_err(rvu->dev,
4183 			"NIX X2P calibration failed, status 0x%llx\n", status);
4184 	if (err)
4185 		return err;
4186 	return 0;
4187 }
4188 
nix_aq_init(struct rvu * rvu,struct rvu_block * block)4189 static int nix_aq_init(struct rvu *rvu, struct rvu_block *block)
4190 {
4191 	u64 cfg;
4192 	int err;
4193 
4194 	/* Set admin queue endianness */
4195 	cfg = rvu_read64(rvu, block->addr, NIX_AF_CFG);
4196 #ifdef __BIG_ENDIAN
4197 	cfg |= BIT_ULL(8);
4198 	rvu_write64(rvu, block->addr, NIX_AF_CFG, cfg);
4199 #else
4200 	cfg &= ~BIT_ULL(8);
4201 	rvu_write64(rvu, block->addr, NIX_AF_CFG, cfg);
4202 #endif
4203 
4204 	/* Do not bypass NDC cache */
4205 	cfg = rvu_read64(rvu, block->addr, NIX_AF_NDC_CFG);
4206 	cfg &= ~0x3FFEULL;
4207 #ifdef CONFIG_NDC_DIS_DYNAMIC_CACHING
4208 	/* Disable caching of SQB aka SQEs */
4209 	cfg |= 0x04ULL;
4210 #endif
4211 	rvu_write64(rvu, block->addr, NIX_AF_NDC_CFG, cfg);
4212 
4213 	/* Result structure can be followed by RQ/SQ/CQ context at
4214 	 * RES + 128bytes and a write mask at RES + 256 bytes, depending on
4215 	 * operation type. Alloc sufficient result memory for all operations.
4216 	 */
4217 	err = rvu_aq_alloc(rvu, &block->aq,
4218 			   Q_COUNT(AQ_SIZE), sizeof(struct nix_aq_inst_s),
4219 			   ALIGN(sizeof(struct nix_aq_res_s), 128) + 256);
4220 	if (err)
4221 		return err;
4222 
4223 	rvu_write64(rvu, block->addr, NIX_AF_AQ_CFG, AQ_SIZE);
4224 	rvu_write64(rvu, block->addr,
4225 		    NIX_AF_AQ_BASE, (u64)block->aq->inst->iova);
4226 	return 0;
4227 }
4228 
rvu_nix_setup_capabilities(struct rvu * rvu,int blkaddr)4229 static void rvu_nix_setup_capabilities(struct rvu *rvu, int blkaddr)
4230 {
4231 	struct rvu_hwinfo *hw = rvu->hw;
4232 	u64 hw_const;
4233 
4234 	hw_const = rvu_read64(rvu, blkaddr, NIX_AF_CONST1);
4235 
4236 	/* On OcteonTx2 DWRR quantum is directly configured into each of
4237 	 * the transmit scheduler queues. And PF/VF drivers were free to
4238 	 * config any value upto 2^24.
4239 	 * On CN10K, HW is modified, the quantum configuration at scheduler
4240 	 * queues is in terms of weight. And SW needs to setup a base DWRR MTU
4241 	 * at NIX_AF_DWRR_RPM_MTU / NIX_AF_DWRR_SDP_MTU. HW will do
4242 	 * 'DWRR MTU * weight' to get the quantum.
4243 	 *
4244 	 * Check if HW uses a common MTU for all DWRR quantum configs.
4245 	 * On OcteonTx2 this register field is '0'.
4246 	 */
4247 	if (((hw_const >> 56) & 0x10) == 0x10)
4248 		hw->cap.nix_common_dwrr_mtu = true;
4249 }
4250 
rvu_nix_block_init(struct rvu * rvu,struct nix_hw * nix_hw)4251 static int rvu_nix_block_init(struct rvu *rvu, struct nix_hw *nix_hw)
4252 {
4253 	const struct npc_lt_def_cfg *ltdefs;
4254 	struct rvu_hwinfo *hw = rvu->hw;
4255 	int blkaddr = nix_hw->blkaddr;
4256 	struct rvu_block *block;
4257 	int err;
4258 	u64 cfg;
4259 
4260 	block = &hw->block[blkaddr];
4261 
4262 	if (is_rvu_96xx_B0(rvu)) {
4263 		/* As per a HW errata in 96xx A0/B0 silicon, NIX may corrupt
4264 		 * internal state when conditional clocks are turned off.
4265 		 * Hence enable them.
4266 		 */
4267 		rvu_write64(rvu, blkaddr, NIX_AF_CFG,
4268 			    rvu_read64(rvu, blkaddr, NIX_AF_CFG) | 0x40ULL);
4269 
4270 		/* Set chan/link to backpressure TL3 instead of TL2 */
4271 		rvu_write64(rvu, blkaddr, NIX_AF_PSE_CHANNEL_LEVEL, 0x01);
4272 
4273 		/* Disable SQ manager's sticky mode operation (set TM6 = 0)
4274 		 * This sticky mode is known to cause SQ stalls when multiple
4275 		 * SQs are mapped to same SMQ and transmitting pkts at a time.
4276 		 */
4277 		cfg = rvu_read64(rvu, blkaddr, NIX_AF_SQM_DBG_CTL_STATUS);
4278 		cfg &= ~BIT_ULL(15);
4279 		rvu_write64(rvu, blkaddr, NIX_AF_SQM_DBG_CTL_STATUS, cfg);
4280 	}
4281 
4282 	ltdefs = rvu->kpu.lt_def;
4283 	/* Calibrate X2P bus to check if CGX/LBK links are fine */
4284 	err = nix_calibrate_x2p(rvu, blkaddr);
4285 	if (err)
4286 		return err;
4287 
4288 	/* Setup capabilities of the NIX block */
4289 	rvu_nix_setup_capabilities(rvu, blkaddr);
4290 
4291 	/* Initialize admin queue */
4292 	err = nix_aq_init(rvu, block);
4293 	if (err)
4294 		return err;
4295 
4296 	/* Restore CINT timer delay to HW reset values */
4297 	rvu_write64(rvu, blkaddr, NIX_AF_CINT_DELAY, 0x0ULL);
4298 
4299 	cfg = rvu_read64(rvu, blkaddr, NIX_AF_SEB_CFG);
4300 
4301 	/* For better performance use NDC TX instead of NDC RX for SQ's SQEs" */
4302 	cfg |= 1ULL;
4303 	if (!is_rvu_otx2(rvu))
4304 		cfg |= NIX_PTP_1STEP_EN;
4305 
4306 	rvu_write64(rvu, blkaddr, NIX_AF_SEB_CFG, cfg);
4307 
4308 	if (is_block_implemented(hw, blkaddr)) {
4309 		err = nix_setup_txschq(rvu, nix_hw, blkaddr);
4310 		if (err)
4311 			return err;
4312 
4313 		err = nix_setup_ipolicers(rvu, nix_hw, blkaddr);
4314 		if (err)
4315 			return err;
4316 
4317 		err = nix_af_mark_format_setup(rvu, nix_hw, blkaddr);
4318 		if (err)
4319 			return err;
4320 
4321 		err = nix_setup_mcast(rvu, nix_hw, blkaddr);
4322 		if (err)
4323 			return err;
4324 
4325 		err = nix_setup_txvlan(rvu, nix_hw);
4326 		if (err)
4327 			return err;
4328 
4329 		/* Configure segmentation offload formats */
4330 		nix_setup_lso(rvu, nix_hw, blkaddr);
4331 
4332 		/* Config Outer/Inner L2, IP, TCP, UDP and SCTP NPC layer info.
4333 		 * This helps HW protocol checker to identify headers
4334 		 * and validate length and checksums.
4335 		 */
4336 		rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_OL2,
4337 			    (ltdefs->rx_ol2.lid << 8) | (ltdefs->rx_ol2.ltype_match << 4) |
4338 			    ltdefs->rx_ol2.ltype_mask);
4339 		rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_OIP4,
4340 			    (ltdefs->rx_oip4.lid << 8) | (ltdefs->rx_oip4.ltype_match << 4) |
4341 			    ltdefs->rx_oip4.ltype_mask);
4342 		rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_IIP4,
4343 			    (ltdefs->rx_iip4.lid << 8) | (ltdefs->rx_iip4.ltype_match << 4) |
4344 			    ltdefs->rx_iip4.ltype_mask);
4345 		rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_OIP6,
4346 			    (ltdefs->rx_oip6.lid << 8) | (ltdefs->rx_oip6.ltype_match << 4) |
4347 			    ltdefs->rx_oip6.ltype_mask);
4348 		rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_IIP6,
4349 			    (ltdefs->rx_iip6.lid << 8) | (ltdefs->rx_iip6.ltype_match << 4) |
4350 			    ltdefs->rx_iip6.ltype_mask);
4351 		rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_OTCP,
4352 			    (ltdefs->rx_otcp.lid << 8) | (ltdefs->rx_otcp.ltype_match << 4) |
4353 			    ltdefs->rx_otcp.ltype_mask);
4354 		rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_ITCP,
4355 			    (ltdefs->rx_itcp.lid << 8) | (ltdefs->rx_itcp.ltype_match << 4) |
4356 			    ltdefs->rx_itcp.ltype_mask);
4357 		rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_OUDP,
4358 			    (ltdefs->rx_oudp.lid << 8) | (ltdefs->rx_oudp.ltype_match << 4) |
4359 			    ltdefs->rx_oudp.ltype_mask);
4360 		rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_IUDP,
4361 			    (ltdefs->rx_iudp.lid << 8) | (ltdefs->rx_iudp.ltype_match << 4) |
4362 			    ltdefs->rx_iudp.ltype_mask);
4363 		rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_OSCTP,
4364 			    (ltdefs->rx_osctp.lid << 8) | (ltdefs->rx_osctp.ltype_match << 4) |
4365 			    ltdefs->rx_osctp.ltype_mask);
4366 		rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_ISCTP,
4367 			    (ltdefs->rx_isctp.lid << 8) | (ltdefs->rx_isctp.ltype_match << 4) |
4368 			    ltdefs->rx_isctp.ltype_mask);
4369 
4370 		if (!is_rvu_otx2(rvu)) {
4371 			/* Enable APAD calculation for other protocols
4372 			 * matching APAD0 and APAD1 lt def registers.
4373 			 */
4374 			rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_CST_APAD0,
4375 				    (ltdefs->rx_apad0.valid << 11) |
4376 				    (ltdefs->rx_apad0.lid << 8) |
4377 				    (ltdefs->rx_apad0.ltype_match << 4) |
4378 				    ltdefs->rx_apad0.ltype_mask);
4379 			rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_CST_APAD1,
4380 				    (ltdefs->rx_apad1.valid << 11) |
4381 				    (ltdefs->rx_apad1.lid << 8) |
4382 				    (ltdefs->rx_apad1.ltype_match << 4) |
4383 				    ltdefs->rx_apad1.ltype_mask);
4384 
4385 			/* Receive ethertype defination register defines layer
4386 			 * information in NPC_RESULT_S to identify the Ethertype
4387 			 * location in L2 header. Used for Ethertype overwriting
4388 			 * in inline IPsec flow.
4389 			 */
4390 			rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_ET(0),
4391 				    (ltdefs->rx_et[0].offset << 12) |
4392 				    (ltdefs->rx_et[0].valid << 11) |
4393 				    (ltdefs->rx_et[0].lid << 8) |
4394 				    (ltdefs->rx_et[0].ltype_match << 4) |
4395 				    ltdefs->rx_et[0].ltype_mask);
4396 			rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_ET(1),
4397 				    (ltdefs->rx_et[1].offset << 12) |
4398 				    (ltdefs->rx_et[1].valid << 11) |
4399 				    (ltdefs->rx_et[1].lid << 8) |
4400 				    (ltdefs->rx_et[1].ltype_match << 4) |
4401 				    ltdefs->rx_et[1].ltype_mask);
4402 		}
4403 
4404 		err = nix_rx_flowkey_alg_cfg(rvu, blkaddr);
4405 		if (err)
4406 			return err;
4407 
4408 		nix_hw->tx_credits = kcalloc(hw->cgx_links + hw->lbk_links,
4409 					     sizeof(u64), GFP_KERNEL);
4410 		if (!nix_hw->tx_credits)
4411 			return -ENOMEM;
4412 
4413 		/* Initialize CGX/LBK/SDP link credits, min/max pkt lengths */
4414 		nix_link_config(rvu, blkaddr, nix_hw);
4415 
4416 		/* Enable Channel backpressure */
4417 		rvu_write64(rvu, blkaddr, NIX_AF_RX_CFG, BIT_ULL(0));
4418 	}
4419 	return 0;
4420 }
4421 
rvu_nix_init(struct rvu * rvu)4422 int rvu_nix_init(struct rvu *rvu)
4423 {
4424 	struct rvu_hwinfo *hw = rvu->hw;
4425 	struct nix_hw *nix_hw;
4426 	int blkaddr = 0, err;
4427 	int i = 0;
4428 
4429 	hw->nix = devm_kcalloc(rvu->dev, MAX_NIX_BLKS, sizeof(struct nix_hw),
4430 			       GFP_KERNEL);
4431 	if (!hw->nix)
4432 		return -ENOMEM;
4433 
4434 	blkaddr = rvu_get_next_nix_blkaddr(rvu, blkaddr);
4435 	while (blkaddr) {
4436 		nix_hw = &hw->nix[i];
4437 		nix_hw->rvu = rvu;
4438 		nix_hw->blkaddr = blkaddr;
4439 		err = rvu_nix_block_init(rvu, nix_hw);
4440 		if (err)
4441 			return err;
4442 		blkaddr = rvu_get_next_nix_blkaddr(rvu, blkaddr);
4443 		i++;
4444 	}
4445 
4446 	return 0;
4447 }
4448 
rvu_nix_block_freemem(struct rvu * rvu,int blkaddr,struct rvu_block * block)4449 static void rvu_nix_block_freemem(struct rvu *rvu, int blkaddr,
4450 				  struct rvu_block *block)
4451 {
4452 	struct nix_txsch *txsch;
4453 	struct nix_mcast *mcast;
4454 	struct nix_txvlan *vlan;
4455 	struct nix_hw *nix_hw;
4456 	int lvl;
4457 
4458 	rvu_aq_free(rvu, block->aq);
4459 
4460 	if (is_block_implemented(rvu->hw, blkaddr)) {
4461 		nix_hw = get_nix_hw(rvu->hw, blkaddr);
4462 		if (!nix_hw)
4463 			return;
4464 
4465 		for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++) {
4466 			txsch = &nix_hw->txsch[lvl];
4467 			kfree(txsch->schq.bmap);
4468 		}
4469 
4470 		kfree(nix_hw->tx_credits);
4471 
4472 		nix_ipolicer_freemem(rvu, nix_hw);
4473 
4474 		vlan = &nix_hw->txvlan;
4475 		kfree(vlan->rsrc.bmap);
4476 		mutex_destroy(&vlan->rsrc_lock);
4477 
4478 		mcast = &nix_hw->mcast;
4479 		qmem_free(rvu->dev, mcast->mce_ctx);
4480 		qmem_free(rvu->dev, mcast->mcast_buf);
4481 		mutex_destroy(&mcast->mce_lock);
4482 	}
4483 }
4484 
rvu_nix_freemem(struct rvu * rvu)4485 void rvu_nix_freemem(struct rvu *rvu)
4486 {
4487 	struct rvu_hwinfo *hw = rvu->hw;
4488 	struct rvu_block *block;
4489 	int blkaddr = 0;
4490 
4491 	blkaddr = rvu_get_next_nix_blkaddr(rvu, blkaddr);
4492 	while (blkaddr) {
4493 		block = &hw->block[blkaddr];
4494 		rvu_nix_block_freemem(rvu, blkaddr, block);
4495 		blkaddr = rvu_get_next_nix_blkaddr(rvu, blkaddr);
4496 	}
4497 }
4498 
rvu_mbox_handler_nix_lf_start_rx(struct rvu * rvu,struct msg_req * req,struct msg_rsp * rsp)4499 int rvu_mbox_handler_nix_lf_start_rx(struct rvu *rvu, struct msg_req *req,
4500 				     struct msg_rsp *rsp)
4501 {
4502 	u16 pcifunc = req->hdr.pcifunc;
4503 	struct rvu_pfvf *pfvf;
4504 	int nixlf, err;
4505 
4506 	err = nix_get_nixlf(rvu, pcifunc, &nixlf, NULL);
4507 	if (err)
4508 		return err;
4509 
4510 	rvu_npc_enable_default_entries(rvu, pcifunc, nixlf);
4511 
4512 	npc_mcam_enable_flows(rvu, pcifunc);
4513 
4514 	pfvf = rvu_get_pfvf(rvu, pcifunc);
4515 	set_bit(NIXLF_INITIALIZED, &pfvf->flags);
4516 
4517 	rvu_switch_update_rules(rvu, pcifunc);
4518 
4519 	return rvu_cgx_start_stop_io(rvu, pcifunc, true);
4520 }
4521 
rvu_mbox_handler_nix_lf_stop_rx(struct rvu * rvu,struct msg_req * req,struct msg_rsp * rsp)4522 int rvu_mbox_handler_nix_lf_stop_rx(struct rvu *rvu, struct msg_req *req,
4523 				    struct msg_rsp *rsp)
4524 {
4525 	u16 pcifunc = req->hdr.pcifunc;
4526 	struct rvu_pfvf *pfvf;
4527 	int nixlf, err;
4528 
4529 	err = nix_get_nixlf(rvu, pcifunc, &nixlf, NULL);
4530 	if (err)
4531 		return err;
4532 
4533 	rvu_npc_disable_mcam_entries(rvu, pcifunc, nixlf);
4534 
4535 	pfvf = rvu_get_pfvf(rvu, pcifunc);
4536 	clear_bit(NIXLF_INITIALIZED, &pfvf->flags);
4537 
4538 	return rvu_cgx_start_stop_io(rvu, pcifunc, false);
4539 }
4540 
4541 #define RX_SA_BASE  GENMASK_ULL(52, 7)
4542 
rvu_nix_lf_teardown(struct rvu * rvu,u16 pcifunc,int blkaddr,int nixlf)4543 void rvu_nix_lf_teardown(struct rvu *rvu, u16 pcifunc, int blkaddr, int nixlf)
4544 {
4545 	struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, pcifunc);
4546 	struct hwctx_disable_req ctx_req;
4547 	int pf = rvu_get_pf(pcifunc);
4548 	struct mac_ops *mac_ops;
4549 	u8 cgx_id, lmac_id;
4550 	u64 sa_base;
4551 	void *cgxd;
4552 	int err;
4553 
4554 	ctx_req.hdr.pcifunc = pcifunc;
4555 
4556 	/* Cleanup NPC MCAM entries, free Tx scheduler queues being used */
4557 	rvu_npc_disable_mcam_entries(rvu, pcifunc, nixlf);
4558 	rvu_npc_free_mcam_entries(rvu, pcifunc, nixlf);
4559 	nix_interface_deinit(rvu, pcifunc, nixlf);
4560 	nix_rx_sync(rvu, blkaddr);
4561 	nix_txschq_free(rvu, pcifunc);
4562 
4563 	clear_bit(NIXLF_INITIALIZED, &pfvf->flags);
4564 
4565 	rvu_cgx_start_stop_io(rvu, pcifunc, false);
4566 
4567 	if (pfvf->sq_ctx) {
4568 		ctx_req.ctype = NIX_AQ_CTYPE_SQ;
4569 		err = nix_lf_hwctx_disable(rvu, &ctx_req);
4570 		if (err)
4571 			dev_err(rvu->dev, "SQ ctx disable failed\n");
4572 	}
4573 
4574 	if (pfvf->rq_ctx) {
4575 		ctx_req.ctype = NIX_AQ_CTYPE_RQ;
4576 		err = nix_lf_hwctx_disable(rvu, &ctx_req);
4577 		if (err)
4578 			dev_err(rvu->dev, "RQ ctx disable failed\n");
4579 	}
4580 
4581 	if (pfvf->cq_ctx) {
4582 		ctx_req.ctype = NIX_AQ_CTYPE_CQ;
4583 		err = nix_lf_hwctx_disable(rvu, &ctx_req);
4584 		if (err)
4585 			dev_err(rvu->dev, "CQ ctx disable failed\n");
4586 	}
4587 
4588 	/* reset HW config done for Switch headers */
4589 	rvu_npc_set_parse_mode(rvu, pcifunc, OTX2_PRIV_FLAGS_DEFAULT,
4590 			       (PKIND_TX | PKIND_RX), 0, 0, 0, 0);
4591 
4592 	/* Disabling CGX and NPC config done for PTP */
4593 	if (pfvf->hw_rx_tstamp_en) {
4594 		rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
4595 		cgxd = rvu_cgx_pdata(cgx_id, rvu);
4596 		mac_ops = get_mac_ops(cgxd);
4597 		mac_ops->mac_enadis_ptp_config(cgxd, lmac_id, false);
4598 		/* Undo NPC config done for PTP */
4599 		if (npc_config_ts_kpuaction(rvu, pf, pcifunc, false))
4600 			dev_err(rvu->dev, "NPC config for PTP failed\n");
4601 		pfvf->hw_rx_tstamp_en = false;
4602 	}
4603 
4604 	/* reset priority flow control config */
4605 	rvu_cgx_prio_flow_ctrl_cfg(rvu, pcifunc, 0, 0, 0);
4606 
4607 	/* reset 802.3x flow control config */
4608 	rvu_cgx_cfg_pause_frm(rvu, pcifunc, 0, 0);
4609 
4610 	nix_ctx_free(rvu, pfvf);
4611 
4612 	nix_free_all_bandprof(rvu, pcifunc);
4613 
4614 	sa_base = rvu_read64(rvu, blkaddr, NIX_AF_LFX_RX_IPSEC_SA_BASE(nixlf));
4615 	if (FIELD_GET(RX_SA_BASE, sa_base)) {
4616 		err = rvu_cpt_ctx_flush(rvu, pcifunc);
4617 		if (err)
4618 			dev_err(rvu->dev,
4619 				"CPT ctx flush failed with error: %d\n", err);
4620 	}
4621 }
4622 
4623 #define NIX_AF_LFX_TX_CFG_PTP_EN	BIT_ULL(32)
4624 
rvu_nix_lf_ptp_tx_cfg(struct rvu * rvu,u16 pcifunc,bool enable)4625 static int rvu_nix_lf_ptp_tx_cfg(struct rvu *rvu, u16 pcifunc, bool enable)
4626 {
4627 	struct rvu_hwinfo *hw = rvu->hw;
4628 	struct rvu_block *block;
4629 	int blkaddr, pf;
4630 	int nixlf;
4631 	u64 cfg;
4632 
4633 	pf = rvu_get_pf(pcifunc);
4634 	if (!is_mac_feature_supported(rvu, pf, RVU_LMAC_FEAT_PTP))
4635 		return 0;
4636 
4637 	blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, pcifunc);
4638 	if (blkaddr < 0)
4639 		return NIX_AF_ERR_AF_LF_INVALID;
4640 
4641 	block = &hw->block[blkaddr];
4642 	nixlf = rvu_get_lf(rvu, block, pcifunc, 0);
4643 	if (nixlf < 0)
4644 		return NIX_AF_ERR_AF_LF_INVALID;
4645 
4646 	cfg = rvu_read64(rvu, blkaddr, NIX_AF_LFX_TX_CFG(nixlf));
4647 
4648 	if (enable)
4649 		cfg |= NIX_AF_LFX_TX_CFG_PTP_EN;
4650 	else
4651 		cfg &= ~NIX_AF_LFX_TX_CFG_PTP_EN;
4652 
4653 	rvu_write64(rvu, blkaddr, NIX_AF_LFX_TX_CFG(nixlf), cfg);
4654 
4655 	return 0;
4656 }
4657 
rvu_mbox_handler_nix_lf_ptp_tx_enable(struct rvu * rvu,struct msg_req * req,struct msg_rsp * rsp)4658 int rvu_mbox_handler_nix_lf_ptp_tx_enable(struct rvu *rvu, struct msg_req *req,
4659 					  struct msg_rsp *rsp)
4660 {
4661 	return rvu_nix_lf_ptp_tx_cfg(rvu, req->hdr.pcifunc, true);
4662 }
4663 
rvu_mbox_handler_nix_lf_ptp_tx_disable(struct rvu * rvu,struct msg_req * req,struct msg_rsp * rsp)4664 int rvu_mbox_handler_nix_lf_ptp_tx_disable(struct rvu *rvu, struct msg_req *req,
4665 					   struct msg_rsp *rsp)
4666 {
4667 	return rvu_nix_lf_ptp_tx_cfg(rvu, req->hdr.pcifunc, false);
4668 }
4669 
rvu_mbox_handler_nix_lso_format_cfg(struct rvu * rvu,struct nix_lso_format_cfg * req,struct nix_lso_format_cfg_rsp * rsp)4670 int rvu_mbox_handler_nix_lso_format_cfg(struct rvu *rvu,
4671 					struct nix_lso_format_cfg *req,
4672 					struct nix_lso_format_cfg_rsp *rsp)
4673 {
4674 	u16 pcifunc = req->hdr.pcifunc;
4675 	struct nix_hw *nix_hw;
4676 	struct rvu_pfvf *pfvf;
4677 	int blkaddr, idx, f;
4678 	u64 reg;
4679 
4680 	pfvf = rvu_get_pfvf(rvu, pcifunc);
4681 	blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, pcifunc);
4682 	if (!pfvf->nixlf || blkaddr < 0)
4683 		return NIX_AF_ERR_AF_LF_INVALID;
4684 
4685 	nix_hw = get_nix_hw(rvu->hw, blkaddr);
4686 	if (!nix_hw)
4687 		return NIX_AF_ERR_INVALID_NIXBLK;
4688 
4689 	/* Find existing matching LSO format, if any */
4690 	for (idx = 0; idx < nix_hw->lso.in_use; idx++) {
4691 		for (f = 0; f < NIX_LSO_FIELD_MAX; f++) {
4692 			reg = rvu_read64(rvu, blkaddr,
4693 					 NIX_AF_LSO_FORMATX_FIELDX(idx, f));
4694 			if (req->fields[f] != (reg & req->field_mask))
4695 				break;
4696 		}
4697 
4698 		if (f == NIX_LSO_FIELD_MAX)
4699 			break;
4700 	}
4701 
4702 	if (idx < nix_hw->lso.in_use) {
4703 		/* Match found */
4704 		rsp->lso_format_idx = idx;
4705 		return 0;
4706 	}
4707 
4708 	if (nix_hw->lso.in_use == nix_hw->lso.total)
4709 		return NIX_AF_ERR_LSO_CFG_FAIL;
4710 
4711 	rsp->lso_format_idx = nix_hw->lso.in_use++;
4712 
4713 	for (f = 0; f < NIX_LSO_FIELD_MAX; f++)
4714 		rvu_write64(rvu, blkaddr,
4715 			    NIX_AF_LSO_FORMATX_FIELDX(rsp->lso_format_idx, f),
4716 			    req->fields[f]);
4717 
4718 	return 0;
4719 }
4720 
4721 #define IPSEC_GEN_CFG_EGRP    GENMASK_ULL(50, 48)
4722 #define IPSEC_GEN_CFG_OPCODE  GENMASK_ULL(47, 32)
4723 #define IPSEC_GEN_CFG_PARAM1  GENMASK_ULL(31, 16)
4724 #define IPSEC_GEN_CFG_PARAM2  GENMASK_ULL(15, 0)
4725 
4726 #define CPT_INST_QSEL_BLOCK   GENMASK_ULL(28, 24)
4727 #define CPT_INST_QSEL_PF_FUNC GENMASK_ULL(23, 8)
4728 #define CPT_INST_QSEL_SLOT    GENMASK_ULL(7, 0)
4729 
nix_inline_ipsec_cfg(struct rvu * rvu,struct nix_inline_ipsec_cfg * req,int blkaddr)4730 static void nix_inline_ipsec_cfg(struct rvu *rvu, struct nix_inline_ipsec_cfg *req,
4731 				 int blkaddr)
4732 {
4733 	u8 cpt_idx, cpt_blkaddr;
4734 	u64 val;
4735 
4736 	cpt_idx = (blkaddr == BLKADDR_NIX0) ? 0 : 1;
4737 	if (req->enable) {
4738 		val = 0;
4739 		/* Enable context prefetching */
4740 		if (!is_rvu_otx2(rvu))
4741 			val |= BIT_ULL(51);
4742 
4743 		/* Set OPCODE and EGRP */
4744 		val |= FIELD_PREP(IPSEC_GEN_CFG_EGRP, req->gen_cfg.egrp);
4745 		val |= FIELD_PREP(IPSEC_GEN_CFG_OPCODE, req->gen_cfg.opcode);
4746 		val |= FIELD_PREP(IPSEC_GEN_CFG_PARAM1, req->gen_cfg.param1);
4747 		val |= FIELD_PREP(IPSEC_GEN_CFG_PARAM2, req->gen_cfg.param2);
4748 
4749 		rvu_write64(rvu, blkaddr, NIX_AF_RX_IPSEC_GEN_CFG, val);
4750 
4751 		/* Set CPT queue for inline IPSec */
4752 		val = FIELD_PREP(CPT_INST_QSEL_SLOT, req->inst_qsel.cpt_slot);
4753 		val |= FIELD_PREP(CPT_INST_QSEL_PF_FUNC,
4754 				  req->inst_qsel.cpt_pf_func);
4755 
4756 		if (!is_rvu_otx2(rvu)) {
4757 			cpt_blkaddr = (cpt_idx == 0) ? BLKADDR_CPT0 :
4758 						       BLKADDR_CPT1;
4759 			val |= FIELD_PREP(CPT_INST_QSEL_BLOCK, cpt_blkaddr);
4760 		}
4761 
4762 		rvu_write64(rvu, blkaddr, NIX_AF_RX_CPTX_INST_QSEL(cpt_idx),
4763 			    val);
4764 
4765 		/* Set CPT credit */
4766 		rvu_write64(rvu, blkaddr, NIX_AF_RX_CPTX_CREDIT(cpt_idx),
4767 			    req->cpt_credit);
4768 	} else {
4769 		rvu_write64(rvu, blkaddr, NIX_AF_RX_IPSEC_GEN_CFG, 0x0);
4770 		rvu_write64(rvu, blkaddr, NIX_AF_RX_CPTX_INST_QSEL(cpt_idx),
4771 			    0x0);
4772 		rvu_write64(rvu, blkaddr, NIX_AF_RX_CPTX_CREDIT(cpt_idx),
4773 			    0x3FFFFF);
4774 	}
4775 }
4776 
rvu_mbox_handler_nix_inline_ipsec_cfg(struct rvu * rvu,struct nix_inline_ipsec_cfg * req,struct msg_rsp * rsp)4777 int rvu_mbox_handler_nix_inline_ipsec_cfg(struct rvu *rvu,
4778 					  struct nix_inline_ipsec_cfg *req,
4779 					  struct msg_rsp *rsp)
4780 {
4781 	if (!is_block_implemented(rvu->hw, BLKADDR_CPT0))
4782 		return 0;
4783 
4784 	nix_inline_ipsec_cfg(rvu, req, BLKADDR_NIX0);
4785 	if (is_block_implemented(rvu->hw, BLKADDR_CPT1))
4786 		nix_inline_ipsec_cfg(rvu, req, BLKADDR_NIX1);
4787 
4788 	return 0;
4789 }
4790 
rvu_mbox_handler_nix_inline_ipsec_lf_cfg(struct rvu * rvu,struct nix_inline_ipsec_lf_cfg * req,struct msg_rsp * rsp)4791 int rvu_mbox_handler_nix_inline_ipsec_lf_cfg(struct rvu *rvu,
4792 					     struct nix_inline_ipsec_lf_cfg *req,
4793 					     struct msg_rsp *rsp)
4794 {
4795 	int lf, blkaddr, err;
4796 	u64 val;
4797 
4798 	if (!is_block_implemented(rvu->hw, BLKADDR_CPT0))
4799 		return 0;
4800 
4801 	err = nix_get_nixlf(rvu, req->hdr.pcifunc, &lf, &blkaddr);
4802 	if (err)
4803 		return err;
4804 
4805 	if (req->enable) {
4806 		/* Set TT, TAG_CONST, SA_POW2_SIZE and LENM1_MAX */
4807 		val = (u64)req->ipsec_cfg0.tt << 44 |
4808 		      (u64)req->ipsec_cfg0.tag_const << 20 |
4809 		      (u64)req->ipsec_cfg0.sa_pow2_size << 16 |
4810 		      req->ipsec_cfg0.lenm1_max;
4811 
4812 		if (blkaddr == BLKADDR_NIX1)
4813 			val |= BIT_ULL(46);
4814 
4815 		rvu_write64(rvu, blkaddr, NIX_AF_LFX_RX_IPSEC_CFG0(lf), val);
4816 
4817 		/* Set SA_IDX_W and SA_IDX_MAX */
4818 		val = (u64)req->ipsec_cfg1.sa_idx_w << 32 |
4819 		      req->ipsec_cfg1.sa_idx_max;
4820 		rvu_write64(rvu, blkaddr, NIX_AF_LFX_RX_IPSEC_CFG1(lf), val);
4821 
4822 		/* Set SA base address */
4823 		rvu_write64(rvu, blkaddr, NIX_AF_LFX_RX_IPSEC_SA_BASE(lf),
4824 			    req->sa_base_addr);
4825 	} else {
4826 		rvu_write64(rvu, blkaddr, NIX_AF_LFX_RX_IPSEC_CFG0(lf), 0x0);
4827 		rvu_write64(rvu, blkaddr, NIX_AF_LFX_RX_IPSEC_CFG1(lf), 0x0);
4828 		rvu_write64(rvu, blkaddr, NIX_AF_LFX_RX_IPSEC_SA_BASE(lf),
4829 			    0x0);
4830 	}
4831 
4832 	return 0;
4833 }
rvu_nix_reset_mac(struct rvu_pfvf * pfvf,int pcifunc)4834 void rvu_nix_reset_mac(struct rvu_pfvf *pfvf, int pcifunc)
4835 {
4836 	bool from_vf = !!(pcifunc & RVU_PFVF_FUNC_MASK);
4837 
4838 	/* overwrite vf mac address with default_mac */
4839 	if (from_vf)
4840 		ether_addr_copy(pfvf->mac_addr, pfvf->default_mac);
4841 }
4842 
4843 /* NIX ingress policers or bandwidth profiles APIs */
nix_config_rx_pkt_policer_precolor(struct rvu * rvu,int blkaddr)4844 static void nix_config_rx_pkt_policer_precolor(struct rvu *rvu, int blkaddr)
4845 {
4846 	struct npc_lt_def_cfg defs, *ltdefs;
4847 
4848 	ltdefs = &defs;
4849 	memcpy(ltdefs, rvu->kpu.lt_def, sizeof(struct npc_lt_def_cfg));
4850 
4851 	/* Extract PCP and DEI fields from outer VLAN from byte offset
4852 	 * 2 from the start of LB_PTR (ie TAG).
4853 	 * VLAN0 is Outer VLAN and VLAN1 is Inner VLAN. Inner VLAN
4854 	 * fields are considered when 'Tunnel enable' is set in profile.
4855 	 */
4856 	rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_VLAN0_PCP_DEI,
4857 		    (2UL << 12) | (ltdefs->ovlan.lid << 8) |
4858 		    (ltdefs->ovlan.ltype_match << 4) |
4859 		    ltdefs->ovlan.ltype_mask);
4860 	rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_VLAN1_PCP_DEI,
4861 		    (2UL << 12) | (ltdefs->ivlan.lid << 8) |
4862 		    (ltdefs->ivlan.ltype_match << 4) |
4863 		    ltdefs->ivlan.ltype_mask);
4864 
4865 	/* DSCP field in outer and tunneled IPv4 packets */
4866 	rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_OIP4_DSCP,
4867 		    (1UL << 12) | (ltdefs->rx_oip4.lid << 8) |
4868 		    (ltdefs->rx_oip4.ltype_match << 4) |
4869 		    ltdefs->rx_oip4.ltype_mask);
4870 	rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_IIP4_DSCP,
4871 		    (1UL << 12) | (ltdefs->rx_iip4.lid << 8) |
4872 		    (ltdefs->rx_iip4.ltype_match << 4) |
4873 		    ltdefs->rx_iip4.ltype_mask);
4874 
4875 	/* DSCP field (traffic class) in outer and tunneled IPv6 packets */
4876 	rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_OIP6_DSCP,
4877 		    (1UL << 11) | (ltdefs->rx_oip6.lid << 8) |
4878 		    (ltdefs->rx_oip6.ltype_match << 4) |
4879 		    ltdefs->rx_oip6.ltype_mask);
4880 	rvu_write64(rvu, blkaddr, NIX_AF_RX_DEF_IIP6_DSCP,
4881 		    (1UL << 11) | (ltdefs->rx_iip6.lid << 8) |
4882 		    (ltdefs->rx_iip6.ltype_match << 4) |
4883 		    ltdefs->rx_iip6.ltype_mask);
4884 }
4885 
nix_init_policer_context(struct rvu * rvu,struct nix_hw * nix_hw,int layer,int prof_idx)4886 static int nix_init_policer_context(struct rvu *rvu, struct nix_hw *nix_hw,
4887 				    int layer, int prof_idx)
4888 {
4889 	struct nix_cn10k_aq_enq_req aq_req;
4890 	int rc;
4891 
4892 	memset(&aq_req, 0, sizeof(struct nix_cn10k_aq_enq_req));
4893 
4894 	aq_req.qidx = (prof_idx & 0x3FFF) | (layer << 14);
4895 	aq_req.ctype = NIX_AQ_CTYPE_BANDPROF;
4896 	aq_req.op = NIX_AQ_INSTOP_INIT;
4897 
4898 	/* Context is all zeros, submit to AQ */
4899 	rc = rvu_nix_blk_aq_enq_inst(rvu, nix_hw,
4900 				     (struct nix_aq_enq_req *)&aq_req, NULL);
4901 	if (rc)
4902 		dev_err(rvu->dev, "Failed to INIT bandwidth profile layer %d profile %d\n",
4903 			layer, prof_idx);
4904 	return rc;
4905 }
4906 
nix_setup_ipolicers(struct rvu * rvu,struct nix_hw * nix_hw,int blkaddr)4907 static int nix_setup_ipolicers(struct rvu *rvu,
4908 			       struct nix_hw *nix_hw, int blkaddr)
4909 {
4910 	struct rvu_hwinfo *hw = rvu->hw;
4911 	struct nix_ipolicer *ipolicer;
4912 	int err, layer, prof_idx;
4913 	u64 cfg;
4914 
4915 	cfg = rvu_read64(rvu, blkaddr, NIX_AF_CONST);
4916 	if (!(cfg & BIT_ULL(61))) {
4917 		hw->cap.ipolicer = false;
4918 		return 0;
4919 	}
4920 
4921 	hw->cap.ipolicer = true;
4922 	nix_hw->ipolicer = devm_kcalloc(rvu->dev, BAND_PROF_NUM_LAYERS,
4923 					sizeof(*ipolicer), GFP_KERNEL);
4924 	if (!nix_hw->ipolicer)
4925 		return -ENOMEM;
4926 
4927 	cfg = rvu_read64(rvu, blkaddr, NIX_AF_PL_CONST);
4928 
4929 	for (layer = 0; layer < BAND_PROF_NUM_LAYERS; layer++) {
4930 		ipolicer = &nix_hw->ipolicer[layer];
4931 		switch (layer) {
4932 		case BAND_PROF_LEAF_LAYER:
4933 			ipolicer->band_prof.max = cfg & 0XFFFF;
4934 			break;
4935 		case BAND_PROF_MID_LAYER:
4936 			ipolicer->band_prof.max = (cfg >> 16) & 0XFFFF;
4937 			break;
4938 		case BAND_PROF_TOP_LAYER:
4939 			ipolicer->band_prof.max = (cfg >> 32) & 0XFFFF;
4940 			break;
4941 		}
4942 
4943 		if (!ipolicer->band_prof.max)
4944 			continue;
4945 
4946 		err = rvu_alloc_bitmap(&ipolicer->band_prof);
4947 		if (err)
4948 			return err;
4949 
4950 		ipolicer->pfvf_map = devm_kcalloc(rvu->dev,
4951 						  ipolicer->band_prof.max,
4952 						  sizeof(u16), GFP_KERNEL);
4953 		if (!ipolicer->pfvf_map)
4954 			return -ENOMEM;
4955 
4956 		ipolicer->match_id = devm_kcalloc(rvu->dev,
4957 						  ipolicer->band_prof.max,
4958 						  sizeof(u16), GFP_KERNEL);
4959 		if (!ipolicer->match_id)
4960 			return -ENOMEM;
4961 
4962 		for (prof_idx = 0;
4963 		     prof_idx < ipolicer->band_prof.max; prof_idx++) {
4964 			/* Set AF as current owner for INIT ops to succeed */
4965 			ipolicer->pfvf_map[prof_idx] = 0x00;
4966 
4967 			/* There is no enable bit in the profile context,
4968 			 * so no context disable. So let's INIT them here
4969 			 * so that PF/VF later on have to just do WRITE to
4970 			 * setup policer rates and config.
4971 			 */
4972 			err = nix_init_policer_context(rvu, nix_hw,
4973 						       layer, prof_idx);
4974 			if (err)
4975 				return err;
4976 		}
4977 
4978 		/* Allocate memory for maintaining ref_counts for MID level
4979 		 * profiles, this will be needed for leaf layer profiles'
4980 		 * aggregation.
4981 		 */
4982 		if (layer != BAND_PROF_MID_LAYER)
4983 			continue;
4984 
4985 		ipolicer->ref_count = devm_kcalloc(rvu->dev,
4986 						   ipolicer->band_prof.max,
4987 						   sizeof(u16), GFP_KERNEL);
4988 		if (!ipolicer->ref_count)
4989 			return -ENOMEM;
4990 	}
4991 
4992 	/* Set policer timeunit to 2us ie  (19 + 1) * 100 nsec = 2us */
4993 	rvu_write64(rvu, blkaddr, NIX_AF_PL_TS, 19);
4994 
4995 	nix_config_rx_pkt_policer_precolor(rvu, blkaddr);
4996 
4997 	return 0;
4998 }
4999 
nix_ipolicer_freemem(struct rvu * rvu,struct nix_hw * nix_hw)5000 static void nix_ipolicer_freemem(struct rvu *rvu, struct nix_hw *nix_hw)
5001 {
5002 	struct nix_ipolicer *ipolicer;
5003 	int layer;
5004 
5005 	if (!rvu->hw->cap.ipolicer)
5006 		return;
5007 
5008 	for (layer = 0; layer < BAND_PROF_NUM_LAYERS; layer++) {
5009 		ipolicer = &nix_hw->ipolicer[layer];
5010 
5011 		if (!ipolicer->band_prof.max)
5012 			continue;
5013 
5014 		kfree(ipolicer->band_prof.bmap);
5015 	}
5016 }
5017 
nix_verify_bandprof(struct nix_cn10k_aq_enq_req * req,struct nix_hw * nix_hw,u16 pcifunc)5018 static int nix_verify_bandprof(struct nix_cn10k_aq_enq_req *req,
5019 			       struct nix_hw *nix_hw, u16 pcifunc)
5020 {
5021 	struct nix_ipolicer *ipolicer;
5022 	int layer, hi_layer, prof_idx;
5023 
5024 	/* Bits [15:14] in profile index represent layer */
5025 	layer = (req->qidx >> 14) & 0x03;
5026 	prof_idx = req->qidx & 0x3FFF;
5027 
5028 	ipolicer = &nix_hw->ipolicer[layer];
5029 	if (prof_idx >= ipolicer->band_prof.max)
5030 		return -EINVAL;
5031 
5032 	/* Check if the profile is allocated to the requesting PCIFUNC or not
5033 	 * with the exception of AF. AF is allowed to read and update contexts.
5034 	 */
5035 	if (pcifunc && ipolicer->pfvf_map[prof_idx] != pcifunc)
5036 		return -EINVAL;
5037 
5038 	/* If this profile is linked to higher layer profile then check
5039 	 * if that profile is also allocated to the requesting PCIFUNC
5040 	 * or not.
5041 	 */
5042 	if (!req->prof.hl_en)
5043 		return 0;
5044 
5045 	/* Leaf layer profile can link only to mid layer and
5046 	 * mid layer to top layer.
5047 	 */
5048 	if (layer == BAND_PROF_LEAF_LAYER)
5049 		hi_layer = BAND_PROF_MID_LAYER;
5050 	else if (layer == BAND_PROF_MID_LAYER)
5051 		hi_layer = BAND_PROF_TOP_LAYER;
5052 	else
5053 		return -EINVAL;
5054 
5055 	ipolicer = &nix_hw->ipolicer[hi_layer];
5056 	prof_idx = req->prof.band_prof_id;
5057 	if (prof_idx >= ipolicer->band_prof.max ||
5058 	    ipolicer->pfvf_map[prof_idx] != pcifunc)
5059 		return -EINVAL;
5060 
5061 	return 0;
5062 }
5063 
rvu_mbox_handler_nix_bandprof_alloc(struct rvu * rvu,struct nix_bandprof_alloc_req * req,struct nix_bandprof_alloc_rsp * rsp)5064 int rvu_mbox_handler_nix_bandprof_alloc(struct rvu *rvu,
5065 					struct nix_bandprof_alloc_req *req,
5066 					struct nix_bandprof_alloc_rsp *rsp)
5067 {
5068 	int blkaddr, layer, prof, idx, err;
5069 	u16 pcifunc = req->hdr.pcifunc;
5070 	struct nix_ipolicer *ipolicer;
5071 	struct nix_hw *nix_hw;
5072 
5073 	if (!rvu->hw->cap.ipolicer)
5074 		return NIX_AF_ERR_IPOLICER_NOTSUPP;
5075 
5076 	err = nix_get_struct_ptrs(rvu, pcifunc, &nix_hw, &blkaddr);
5077 	if (err)
5078 		return err;
5079 
5080 	mutex_lock(&rvu->rsrc_lock);
5081 	for (layer = 0; layer < BAND_PROF_NUM_LAYERS; layer++) {
5082 		if (layer == BAND_PROF_INVAL_LAYER)
5083 			continue;
5084 		if (!req->prof_count[layer])
5085 			continue;
5086 
5087 		ipolicer = &nix_hw->ipolicer[layer];
5088 		for (idx = 0; idx < req->prof_count[layer]; idx++) {
5089 			/* Allocate a max of 'MAX_BANDPROF_PER_PFFUNC' profiles */
5090 			if (idx == MAX_BANDPROF_PER_PFFUNC)
5091 				break;
5092 
5093 			prof = rvu_alloc_rsrc(&ipolicer->band_prof);
5094 			if (prof < 0)
5095 				break;
5096 			rsp->prof_count[layer]++;
5097 			rsp->prof_idx[layer][idx] = prof;
5098 			ipolicer->pfvf_map[prof] = pcifunc;
5099 		}
5100 	}
5101 	mutex_unlock(&rvu->rsrc_lock);
5102 	return 0;
5103 }
5104 
nix_free_all_bandprof(struct rvu * rvu,u16 pcifunc)5105 static int nix_free_all_bandprof(struct rvu *rvu, u16 pcifunc)
5106 {
5107 	int blkaddr, layer, prof_idx, err;
5108 	struct nix_ipolicer *ipolicer;
5109 	struct nix_hw *nix_hw;
5110 
5111 	if (!rvu->hw->cap.ipolicer)
5112 		return NIX_AF_ERR_IPOLICER_NOTSUPP;
5113 
5114 	err = nix_get_struct_ptrs(rvu, pcifunc, &nix_hw, &blkaddr);
5115 	if (err)
5116 		return err;
5117 
5118 	mutex_lock(&rvu->rsrc_lock);
5119 	/* Free all the profiles allocated to the PCIFUNC */
5120 	for (layer = 0; layer < BAND_PROF_NUM_LAYERS; layer++) {
5121 		if (layer == BAND_PROF_INVAL_LAYER)
5122 			continue;
5123 		ipolicer = &nix_hw->ipolicer[layer];
5124 
5125 		for (prof_idx = 0; prof_idx < ipolicer->band_prof.max; prof_idx++) {
5126 			if (ipolicer->pfvf_map[prof_idx] != pcifunc)
5127 				continue;
5128 
5129 			/* Clear ratelimit aggregation, if any */
5130 			if (layer == BAND_PROF_LEAF_LAYER &&
5131 			    ipolicer->match_id[prof_idx])
5132 				nix_clear_ratelimit_aggr(rvu, nix_hw, prof_idx);
5133 
5134 			ipolicer->pfvf_map[prof_idx] = 0x00;
5135 			ipolicer->match_id[prof_idx] = 0;
5136 			rvu_free_rsrc(&ipolicer->band_prof, prof_idx);
5137 		}
5138 	}
5139 	mutex_unlock(&rvu->rsrc_lock);
5140 	return 0;
5141 }
5142 
rvu_mbox_handler_nix_bandprof_free(struct rvu * rvu,struct nix_bandprof_free_req * req,struct msg_rsp * rsp)5143 int rvu_mbox_handler_nix_bandprof_free(struct rvu *rvu,
5144 				       struct nix_bandprof_free_req *req,
5145 				       struct msg_rsp *rsp)
5146 {
5147 	int blkaddr, layer, prof_idx, idx, err;
5148 	u16 pcifunc = req->hdr.pcifunc;
5149 	struct nix_ipolicer *ipolicer;
5150 	struct nix_hw *nix_hw;
5151 
5152 	if (req->free_all)
5153 		return nix_free_all_bandprof(rvu, pcifunc);
5154 
5155 	if (!rvu->hw->cap.ipolicer)
5156 		return NIX_AF_ERR_IPOLICER_NOTSUPP;
5157 
5158 	err = nix_get_struct_ptrs(rvu, pcifunc, &nix_hw, &blkaddr);
5159 	if (err)
5160 		return err;
5161 
5162 	mutex_lock(&rvu->rsrc_lock);
5163 	/* Free the requested profile indices */
5164 	for (layer = 0; layer < BAND_PROF_NUM_LAYERS; layer++) {
5165 		if (layer == BAND_PROF_INVAL_LAYER)
5166 			continue;
5167 		if (!req->prof_count[layer])
5168 			continue;
5169 
5170 		ipolicer = &nix_hw->ipolicer[layer];
5171 		for (idx = 0; idx < req->prof_count[layer]; idx++) {
5172 			prof_idx = req->prof_idx[layer][idx];
5173 			if (prof_idx >= ipolicer->band_prof.max ||
5174 			    ipolicer->pfvf_map[prof_idx] != pcifunc)
5175 				continue;
5176 
5177 			/* Clear ratelimit aggregation, if any */
5178 			if (layer == BAND_PROF_LEAF_LAYER &&
5179 			    ipolicer->match_id[prof_idx])
5180 				nix_clear_ratelimit_aggr(rvu, nix_hw, prof_idx);
5181 
5182 			ipolicer->pfvf_map[prof_idx] = 0x00;
5183 			ipolicer->match_id[prof_idx] = 0;
5184 			rvu_free_rsrc(&ipolicer->band_prof, prof_idx);
5185 			if (idx == MAX_BANDPROF_PER_PFFUNC)
5186 				break;
5187 		}
5188 	}
5189 	mutex_unlock(&rvu->rsrc_lock);
5190 	return 0;
5191 }
5192 
nix_aq_context_read(struct rvu * rvu,struct nix_hw * nix_hw,struct nix_cn10k_aq_enq_req * aq_req,struct nix_cn10k_aq_enq_rsp * aq_rsp,u16 pcifunc,u8 ctype,u32 qidx)5193 int nix_aq_context_read(struct rvu *rvu, struct nix_hw *nix_hw,
5194 			struct nix_cn10k_aq_enq_req *aq_req,
5195 			struct nix_cn10k_aq_enq_rsp *aq_rsp,
5196 			u16 pcifunc, u8 ctype, u32 qidx)
5197 {
5198 	memset(aq_req, 0, sizeof(struct nix_cn10k_aq_enq_req));
5199 	aq_req->hdr.pcifunc = pcifunc;
5200 	aq_req->ctype = ctype;
5201 	aq_req->op = NIX_AQ_INSTOP_READ;
5202 	aq_req->qidx = qidx;
5203 
5204 	return rvu_nix_blk_aq_enq_inst(rvu, nix_hw,
5205 				       (struct nix_aq_enq_req *)aq_req,
5206 				       (struct nix_aq_enq_rsp *)aq_rsp);
5207 }
5208 
nix_ipolicer_map_leaf_midprofs(struct rvu * rvu,struct nix_hw * nix_hw,struct nix_cn10k_aq_enq_req * aq_req,struct nix_cn10k_aq_enq_rsp * aq_rsp,u32 leaf_prof,u16 mid_prof)5209 static int nix_ipolicer_map_leaf_midprofs(struct rvu *rvu,
5210 					  struct nix_hw *nix_hw,
5211 					  struct nix_cn10k_aq_enq_req *aq_req,
5212 					  struct nix_cn10k_aq_enq_rsp *aq_rsp,
5213 					  u32 leaf_prof, u16 mid_prof)
5214 {
5215 	memset(aq_req, 0, sizeof(struct nix_cn10k_aq_enq_req));
5216 	aq_req->hdr.pcifunc = 0x00;
5217 	aq_req->ctype = NIX_AQ_CTYPE_BANDPROF;
5218 	aq_req->op = NIX_AQ_INSTOP_WRITE;
5219 	aq_req->qidx = leaf_prof;
5220 
5221 	aq_req->prof.band_prof_id = mid_prof;
5222 	aq_req->prof_mask.band_prof_id = GENMASK(6, 0);
5223 	aq_req->prof.hl_en = 1;
5224 	aq_req->prof_mask.hl_en = 1;
5225 
5226 	return rvu_nix_blk_aq_enq_inst(rvu, nix_hw,
5227 				       (struct nix_aq_enq_req *)aq_req,
5228 				       (struct nix_aq_enq_rsp *)aq_rsp);
5229 }
5230 
rvu_nix_setup_ratelimit_aggr(struct rvu * rvu,u16 pcifunc,u16 rq_idx,u16 match_id)5231 int rvu_nix_setup_ratelimit_aggr(struct rvu *rvu, u16 pcifunc,
5232 				 u16 rq_idx, u16 match_id)
5233 {
5234 	int leaf_prof, mid_prof, leaf_match;
5235 	struct nix_cn10k_aq_enq_req aq_req;
5236 	struct nix_cn10k_aq_enq_rsp aq_rsp;
5237 	struct nix_ipolicer *ipolicer;
5238 	struct nix_hw *nix_hw;
5239 	int blkaddr, idx, rc;
5240 
5241 	if (!rvu->hw->cap.ipolicer)
5242 		return 0;
5243 
5244 	rc = nix_get_struct_ptrs(rvu, pcifunc, &nix_hw, &blkaddr);
5245 	if (rc)
5246 		return rc;
5247 
5248 	/* Fetch the RQ's context to see if policing is enabled */
5249 	rc = nix_aq_context_read(rvu, nix_hw, &aq_req, &aq_rsp, pcifunc,
5250 				 NIX_AQ_CTYPE_RQ, rq_idx);
5251 	if (rc) {
5252 		dev_err(rvu->dev,
5253 			"%s: Failed to fetch RQ%d context of PFFUNC 0x%x\n",
5254 			__func__, rq_idx, pcifunc);
5255 		return rc;
5256 	}
5257 
5258 	if (!aq_rsp.rq.policer_ena)
5259 		return 0;
5260 
5261 	/* Get the bandwidth profile ID mapped to this RQ */
5262 	leaf_prof = aq_rsp.rq.band_prof_id;
5263 
5264 	ipolicer = &nix_hw->ipolicer[BAND_PROF_LEAF_LAYER];
5265 	ipolicer->match_id[leaf_prof] = match_id;
5266 
5267 	/* Check if any other leaf profile is marked with same match_id */
5268 	for (idx = 0; idx < ipolicer->band_prof.max; idx++) {
5269 		if (idx == leaf_prof)
5270 			continue;
5271 		if (ipolicer->match_id[idx] != match_id)
5272 			continue;
5273 
5274 		leaf_match = idx;
5275 		break;
5276 	}
5277 
5278 	if (idx == ipolicer->band_prof.max)
5279 		return 0;
5280 
5281 	/* Fetch the matching profile's context to check if it's already
5282 	 * mapped to a mid level profile.
5283 	 */
5284 	rc = nix_aq_context_read(rvu, nix_hw, &aq_req, &aq_rsp, 0x00,
5285 				 NIX_AQ_CTYPE_BANDPROF, leaf_match);
5286 	if (rc) {
5287 		dev_err(rvu->dev,
5288 			"%s: Failed to fetch context of leaf profile %d\n",
5289 			__func__, leaf_match);
5290 		return rc;
5291 	}
5292 
5293 	ipolicer = &nix_hw->ipolicer[BAND_PROF_MID_LAYER];
5294 	if (aq_rsp.prof.hl_en) {
5295 		/* Get Mid layer prof index and map leaf_prof index
5296 		 * also such that flows that are being steered
5297 		 * to different RQs and marked with same match_id
5298 		 * are rate limited in a aggregate fashion
5299 		 */
5300 		mid_prof = aq_rsp.prof.band_prof_id;
5301 		rc = nix_ipolicer_map_leaf_midprofs(rvu, nix_hw,
5302 						    &aq_req, &aq_rsp,
5303 						    leaf_prof, mid_prof);
5304 		if (rc) {
5305 			dev_err(rvu->dev,
5306 				"%s: Failed to map leaf(%d) and mid(%d) profiles\n",
5307 				__func__, leaf_prof, mid_prof);
5308 			goto exit;
5309 		}
5310 
5311 		mutex_lock(&rvu->rsrc_lock);
5312 		ipolicer->ref_count[mid_prof]++;
5313 		mutex_unlock(&rvu->rsrc_lock);
5314 		goto exit;
5315 	}
5316 
5317 	/* Allocate a mid layer profile and
5318 	 * map both 'leaf_prof' and 'leaf_match' profiles to it.
5319 	 */
5320 	mutex_lock(&rvu->rsrc_lock);
5321 	mid_prof = rvu_alloc_rsrc(&ipolicer->band_prof);
5322 	if (mid_prof < 0) {
5323 		dev_err(rvu->dev,
5324 			"%s: Unable to allocate mid layer profile\n", __func__);
5325 		mutex_unlock(&rvu->rsrc_lock);
5326 		goto exit;
5327 	}
5328 	mutex_unlock(&rvu->rsrc_lock);
5329 	ipolicer->pfvf_map[mid_prof] = 0x00;
5330 	ipolicer->ref_count[mid_prof] = 0;
5331 
5332 	/* Initialize mid layer profile same as 'leaf_prof' */
5333 	rc = nix_aq_context_read(rvu, nix_hw, &aq_req, &aq_rsp, 0x00,
5334 				 NIX_AQ_CTYPE_BANDPROF, leaf_prof);
5335 	if (rc) {
5336 		dev_err(rvu->dev,
5337 			"%s: Failed to fetch context of leaf profile %d\n",
5338 			__func__, leaf_prof);
5339 		goto exit;
5340 	}
5341 
5342 	memset(&aq_req, 0, sizeof(struct nix_cn10k_aq_enq_req));
5343 	aq_req.hdr.pcifunc = 0x00;
5344 	aq_req.qidx = (mid_prof & 0x3FFF) | (BAND_PROF_MID_LAYER << 14);
5345 	aq_req.ctype = NIX_AQ_CTYPE_BANDPROF;
5346 	aq_req.op = NIX_AQ_INSTOP_WRITE;
5347 	memcpy(&aq_req.prof, &aq_rsp.prof, sizeof(struct nix_bandprof_s));
5348 	memset((char *)&aq_req.prof_mask, 0xff, sizeof(struct nix_bandprof_s));
5349 	/* Clear higher layer enable bit in the mid profile, just in case */
5350 	aq_req.prof.hl_en = 0;
5351 	aq_req.prof_mask.hl_en = 1;
5352 
5353 	rc = rvu_nix_blk_aq_enq_inst(rvu, nix_hw,
5354 				     (struct nix_aq_enq_req *)&aq_req, NULL);
5355 	if (rc) {
5356 		dev_err(rvu->dev,
5357 			"%s: Failed to INIT context of mid layer profile %d\n",
5358 			__func__, mid_prof);
5359 		goto exit;
5360 	}
5361 
5362 	/* Map both leaf profiles to this mid layer profile */
5363 	rc = nix_ipolicer_map_leaf_midprofs(rvu, nix_hw,
5364 					    &aq_req, &aq_rsp,
5365 					    leaf_prof, mid_prof);
5366 	if (rc) {
5367 		dev_err(rvu->dev,
5368 			"%s: Failed to map leaf(%d) and mid(%d) profiles\n",
5369 			__func__, leaf_prof, mid_prof);
5370 		goto exit;
5371 	}
5372 
5373 	mutex_lock(&rvu->rsrc_lock);
5374 	ipolicer->ref_count[mid_prof]++;
5375 	mutex_unlock(&rvu->rsrc_lock);
5376 
5377 	rc = nix_ipolicer_map_leaf_midprofs(rvu, nix_hw,
5378 					    &aq_req, &aq_rsp,
5379 					    leaf_match, mid_prof);
5380 	if (rc) {
5381 		dev_err(rvu->dev,
5382 			"%s: Failed to map leaf(%d) and mid(%d) profiles\n",
5383 			__func__, leaf_match, mid_prof);
5384 		ipolicer->ref_count[mid_prof]--;
5385 		goto exit;
5386 	}
5387 
5388 	mutex_lock(&rvu->rsrc_lock);
5389 	ipolicer->ref_count[mid_prof]++;
5390 	mutex_unlock(&rvu->rsrc_lock);
5391 
5392 exit:
5393 	return rc;
5394 }
5395 
5396 /* Called with mutex rsrc_lock */
nix_clear_ratelimit_aggr(struct rvu * rvu,struct nix_hw * nix_hw,u32 leaf_prof)5397 static void nix_clear_ratelimit_aggr(struct rvu *rvu, struct nix_hw *nix_hw,
5398 				     u32 leaf_prof)
5399 {
5400 	struct nix_cn10k_aq_enq_req aq_req;
5401 	struct nix_cn10k_aq_enq_rsp aq_rsp;
5402 	struct nix_ipolicer *ipolicer;
5403 	u16 mid_prof;
5404 	int rc;
5405 
5406 	mutex_unlock(&rvu->rsrc_lock);
5407 
5408 	rc = nix_aq_context_read(rvu, nix_hw, &aq_req, &aq_rsp, 0x00,
5409 				 NIX_AQ_CTYPE_BANDPROF, leaf_prof);
5410 
5411 	mutex_lock(&rvu->rsrc_lock);
5412 	if (rc) {
5413 		dev_err(rvu->dev,
5414 			"%s: Failed to fetch context of leaf profile %d\n",
5415 			__func__, leaf_prof);
5416 		return;
5417 	}
5418 
5419 	if (!aq_rsp.prof.hl_en)
5420 		return;
5421 
5422 	mid_prof = aq_rsp.prof.band_prof_id;
5423 	ipolicer = &nix_hw->ipolicer[BAND_PROF_MID_LAYER];
5424 	ipolicer->ref_count[mid_prof]--;
5425 	/* If ref_count is zero, free mid layer profile */
5426 	if (!ipolicer->ref_count[mid_prof]) {
5427 		ipolicer->pfvf_map[mid_prof] = 0x00;
5428 		rvu_free_rsrc(&ipolicer->band_prof, mid_prof);
5429 	}
5430 }
5431 
rvu_mbox_handler_nix_bandprof_get_hwinfo(struct rvu * rvu,struct msg_req * req,struct nix_bandprof_get_hwinfo_rsp * rsp)5432 int rvu_mbox_handler_nix_bandprof_get_hwinfo(struct rvu *rvu, struct msg_req *req,
5433 					     struct nix_bandprof_get_hwinfo_rsp *rsp)
5434 {
5435 	struct nix_ipolicer *ipolicer;
5436 	int blkaddr, layer, err;
5437 	struct nix_hw *nix_hw;
5438 	u64 tu;
5439 
5440 	if (!rvu->hw->cap.ipolicer)
5441 		return NIX_AF_ERR_IPOLICER_NOTSUPP;
5442 
5443 	err = nix_get_struct_ptrs(rvu, req->hdr.pcifunc, &nix_hw, &blkaddr);
5444 	if (err)
5445 		return err;
5446 
5447 	/* Return number of bandwidth profiles free at each layer */
5448 	mutex_lock(&rvu->rsrc_lock);
5449 	for (layer = 0; layer < BAND_PROF_NUM_LAYERS; layer++) {
5450 		if (layer == BAND_PROF_INVAL_LAYER)
5451 			continue;
5452 
5453 		ipolicer = &nix_hw->ipolicer[layer];
5454 		rsp->prof_count[layer] = rvu_rsrc_free_count(&ipolicer->band_prof);
5455 	}
5456 	mutex_unlock(&rvu->rsrc_lock);
5457 
5458 	/* Set the policer timeunit in nanosec */
5459 	tu = rvu_read64(rvu, blkaddr, NIX_AF_PL_TS) & GENMASK_ULL(9, 0);
5460 	rsp->policer_timeunit = (tu + 1) * 100;
5461 
5462 	return 0;
5463 }
5464