| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Sunil Goutham | 9800 | 54.50% | 39 | 33.91% |
| Naveen Mamindlapalli | 2137 | 11.88% | 6 | 5.22% |
| Subbaraya Sundeep | 1894 | 10.53% | 18 | 15.65% |
| Stanislaw Kardach | 1057 | 5.88% | 4 | 3.48% |
| Harman Kalra | 695 | 3.86% | 4 | 3.48% |
| Santosh Shukla | 426 | 2.37% | 1 | 0.87% |
| Kiran Kumar | 308 | 1.71% | 2 | 1.74% |
| Suman Ghosh | 262 | 1.46% | 4 | 3.48% |
| Vamsi Attunuru | 248 | 1.38% | 2 | 1.74% |
| Geetha Sowjanya | 218 | 1.21% | 5 | 4.35% |
| Nithin Dabilpuram | 184 | 1.02% | 2 | 1.74% |
| Hariprasad Kelam | 181 | 1.01% | 3 | 2.61% |
| Tomasz Duszynski | 152 | 0.85% | 3 | 2.61% |
| Zyta Szpak | 120 | 0.67% | 1 | 0.87% |
| Ratheesh Kannoth | 104 | 0.58% | 4 | 3.48% |
| Linu Cherian | 55 | 0.31% | 4 | 3.48% |
| Pradeep Nalla | 40 | 0.22% | 1 | 0.87% |
| Jerin Jacob | 28 | 0.16% | 1 | 0.87% |
| Vidya | 20 | 0.11% | 1 | 0.87% |
| Tom Rix | 16 | 0.09% | 1 | 0.87% |
| Radha Mohan Chintakuntla | 11 | 0.06% | 1 | 0.87% |
| Hao Zheng | 10 | 0.06% | 1 | 0.87% |
| Christina Jacob | 6 | 0.03% | 1 | 0.87% |
| Yang Guang | 4 | 0.02% | 1 | 0.87% |
| Rikard Falkeborn | 3 | 0.02% | 1 | 0.87% |
| Colin Ian King | 2 | 0.01% | 2 | 1.74% |
| Jilin Yuan | 1 | 0.01% | 1 | 0.87% |
| Felix Manlunas | 1 | 0.01% | 1 | 0.87% |
| Total | 17983 | 115 |
// SPDX-License-Identifier: GPL-2.0 /* Marvell RVU Admin Function driver * * Copyright (C) 2018 Marvell. * */ #include <linux/bitfield.h> #include <linux/module.h> #include <linux/pci.h> #include "rvu_struct.h" #include "rvu_reg.h" #include "rvu.h" #include "npc.h" #include "cgx.h" #include "npc_profile.h" #include "rvu_npc_hash.h" #define RSVD_MCAM_ENTRIES_PER_PF 3 /* Broadcast, Promisc and AllMulticast */ #define RSVD_MCAM_ENTRIES_PER_NIXLF 1 /* Ucast for LFs */ #define NPC_PARSE_RESULT_DMAC_OFFSET 8 #define NPC_HW_TSTAMP_OFFSET 8ULL #define NPC_KEX_CHAN_MASK 0xFFFULL #define NPC_KEX_PF_FUNC_MASK 0xFFFFULL #define ALIGN_8B_CEIL(__a) (((__a) + 7) & (-8)) static const char def_pfl_name[] = "default"; static void npc_mcam_free_all_entries(struct rvu *rvu, struct npc_mcam *mcam, int blkaddr, u16 pcifunc); static void npc_mcam_free_all_counters(struct rvu *rvu, struct npc_mcam *mcam, u16 pcifunc); bool is_npc_intf_tx(u8 intf) { return !!(intf & 0x1); } bool is_npc_intf_rx(u8 intf) { return !(intf & 0x1); } bool is_npc_interface_valid(struct rvu *rvu, u8 intf) { struct rvu_hwinfo *hw = rvu->hw; return intf < hw->npc_intfs; } int rvu_npc_get_tx_nibble_cfg(struct rvu *rvu, u64 nibble_ena) { /* Due to a HW issue in these silicon versions, parse nibble enable * configuration has to be identical for both Rx and Tx interfaces. */ if (is_rvu_96xx_B0(rvu)) return nibble_ena; return 0; } void rvu_npc_set_pkind(struct rvu *rvu, int pkind, struct rvu_pfvf *pfvf) { int blkaddr; u64 val = 0; blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0); if (blkaddr < 0) return; /* Config CPI base for the PKIND */ val = pkind | 1ULL << 62; rvu_write64(rvu, blkaddr, NPC_AF_PKINDX_CPI_DEFX(pkind, 0), val); } int rvu_npc_get_pkind(struct rvu *rvu, u16 pf) { struct npc_pkind *pkind = &rvu->hw->pkind; u32 map; int i; for (i = 0; i < pkind->rsrc.max; i++) { map = pkind->pfchan_map[i]; if (((map >> 16) & 0x3F) == pf) return i; } return -1; } #define NPC_AF_ACTION0_PTR_ADVANCE GENMASK_ULL(27, 20) int npc_config_ts_kpuaction(struct rvu *rvu, int pf, u16 pcifunc, bool enable) { int pkind, blkaddr; u64 val; pkind = rvu_npc_get_pkind(rvu, pf); if (pkind < 0) { dev_err(rvu->dev, "%s: pkind not mapped\n", __func__); return -EINVAL; } blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, pcifunc); if (blkaddr < 0) { dev_err(rvu->dev, "%s: NPC block not implemented\n", __func__); return -EINVAL; } val = rvu_read64(rvu, blkaddr, NPC_AF_PKINDX_ACTION0(pkind)); val &= ~NPC_AF_ACTION0_PTR_ADVANCE; /* If timestamp is enabled then configure NPC to shift 8 bytes */ if (enable) val |= FIELD_PREP(NPC_AF_ACTION0_PTR_ADVANCE, NPC_HW_TSTAMP_OFFSET); rvu_write64(rvu, blkaddr, NPC_AF_PKINDX_ACTION0(pkind), val); return 0; } static int npc_get_ucast_mcam_index(struct npc_mcam *mcam, u16 pcifunc, int nixlf) { struct rvu_hwinfo *hw = container_of(mcam, struct rvu_hwinfo, mcam); struct rvu *rvu = hw->rvu; int blkaddr = 0, max = 0; struct rvu_block *block; struct rvu_pfvf *pfvf; pfvf = rvu_get_pfvf(rvu, pcifunc); /* Given a PF/VF and NIX LF number calculate the unicast mcam * entry index based on the NIX block assigned to the PF/VF. */ blkaddr = rvu_get_next_nix_blkaddr(rvu, blkaddr); while (blkaddr) { if (pfvf->nix_blkaddr == blkaddr) break; block = &rvu->hw->block[blkaddr]; max += block->lf.max; blkaddr = rvu_get_next_nix_blkaddr(rvu, blkaddr); } return mcam->nixlf_offset + (max + nixlf) * RSVD_MCAM_ENTRIES_PER_NIXLF; } int npc_get_nixlf_mcam_index(struct npc_mcam *mcam, u16 pcifunc, int nixlf, int type) { int pf = rvu_get_pf(pcifunc); int index; /* Check if this is for a PF */ if (pf && !(pcifunc & RVU_PFVF_FUNC_MASK)) { /* Reserved entries exclude PF0 */ pf--; index = mcam->pf_offset + (pf * RSVD_MCAM_ENTRIES_PER_PF); /* Broadcast address matching entry should be first so * that the packet can be replicated to all VFs. */ if (type == NIXLF_BCAST_ENTRY) return index; else if (type == NIXLF_ALLMULTI_ENTRY) return index + 1; else if (type == NIXLF_PROMISC_ENTRY) return index + 2; } return npc_get_ucast_mcam_index(mcam, pcifunc, nixlf); } int npc_get_bank(struct npc_mcam *mcam, int index) { int bank = index / mcam->banksize; /* 0,1 & 2,3 banks are combined for this keysize */ if (mcam->keysize == NPC_MCAM_KEY_X2) return bank ? 2 : 0; return bank; } bool is_mcam_entry_enabled(struct rvu *rvu, struct npc_mcam *mcam, int blkaddr, int index) { int bank = npc_get_bank(mcam, index); u64 cfg; index &= (mcam->banksize - 1); cfg = rvu_read64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_CFG(index, bank)); return (cfg & 1); } void npc_enable_mcam_entry(struct rvu *rvu, struct npc_mcam *mcam, int blkaddr, int index, bool enable) { int bank = npc_get_bank(mcam, index); int actbank = bank; index &= (mcam->banksize - 1); for (; bank < (actbank + mcam->banks_per_entry); bank++) { rvu_write64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_CFG(index, bank), enable ? 1 : 0); } } static void npc_clear_mcam_entry(struct rvu *rvu, struct npc_mcam *mcam, int blkaddr, int index) { int bank = npc_get_bank(mcam, index); int actbank = bank; index &= (mcam->banksize - 1); for (; bank < (actbank + mcam->banks_per_entry); bank++) { rvu_write64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_CAMX_INTF(index, bank, 1), 0); rvu_write64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_CAMX_INTF(index, bank, 0), 0); rvu_write64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_CAMX_W0(index, bank, 1), 0); rvu_write64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_CAMX_W0(index, bank, 0), 0); rvu_write64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_CAMX_W1(index, bank, 1), 0); rvu_write64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_CAMX_W1(index, bank, 0), 0); } } static void npc_get_keyword(struct mcam_entry *entry, int idx, u64 *cam0, u64 *cam1) { u64 kw_mask = 0x00; #define CAM_MASK(n) (BIT_ULL(n) - 1) /* 0, 2, 4, 6 indices refer to BANKX_CAMX_W0 and * 1, 3, 5, 7 indices refer to BANKX_CAMX_W1. * * Also, only 48 bits of BANKX_CAMX_W1 are valid. */ switch (idx) { case 0: /* BANK(X)_CAM_W0<63:0> = MCAM_KEY[KW0]<63:0> */ *cam1 = entry->kw[0]; kw_mask = entry->kw_mask[0]; break; case 1: /* BANK(X)_CAM_W1<47:0> = MCAM_KEY[KW1]<47:0> */ *cam1 = entry->kw[1] & CAM_MASK(48); kw_mask = entry->kw_mask[1] & CAM_MASK(48); break; case 2: /* BANK(X + 1)_CAM_W0<15:0> = MCAM_KEY[KW1]<63:48> * BANK(X + 1)_CAM_W0<63:16> = MCAM_KEY[KW2]<47:0> */ *cam1 = (entry->kw[1] >> 48) & CAM_MASK(16); *cam1 |= ((entry->kw[2] & CAM_MASK(48)) << 16); kw_mask = (entry->kw_mask[1] >> 48) & CAM_MASK(16); kw_mask |= ((entry->kw_mask[2] & CAM_MASK(48)) << 16); break; case 3: /* BANK(X + 1)_CAM_W1<15:0> = MCAM_KEY[KW2]<63:48> * BANK(X + 1)_CAM_W1<47:16> = MCAM_KEY[KW3]<31:0> */ *cam1 = (entry->kw[2] >> 48) & CAM_MASK(16); *cam1 |= ((entry->kw[3] & CAM_MASK(32)) << 16); kw_mask = (entry->kw_mask[2] >> 48) & CAM_MASK(16); kw_mask |= ((entry->kw_mask[3] & CAM_MASK(32)) << 16); break; case 4: /* BANK(X + 2)_CAM_W0<31:0> = MCAM_KEY[KW3]<63:32> * BANK(X + 2)_CAM_W0<63:32> = MCAM_KEY[KW4]<31:0> */ *cam1 = (entry->kw[3] >> 32) & CAM_MASK(32); *cam1 |= ((entry->kw[4] & CAM_MASK(32)) << 32); kw_mask = (entry->kw_mask[3] >> 32) & CAM_MASK(32); kw_mask |= ((entry->kw_mask[4] & CAM_MASK(32)) << 32); break; case 5: /* BANK(X + 2)_CAM_W1<31:0> = MCAM_KEY[KW4]<63:32> * BANK(X + 2)_CAM_W1<47:32> = MCAM_KEY[KW5]<15:0> */ *cam1 = (entry->kw[4] >> 32) & CAM_MASK(32); *cam1 |= ((entry->kw[5] & CAM_MASK(16)) << 32); kw_mask = (entry->kw_mask[4] >> 32) & CAM_MASK(32); kw_mask |= ((entry->kw_mask[5] & CAM_MASK(16)) << 32); break; case 6: /* BANK(X + 3)_CAM_W0<47:0> = MCAM_KEY[KW5]<63:16> * BANK(X + 3)_CAM_W0<63:48> = MCAM_KEY[KW6]<15:0> */ *cam1 = (entry->kw[5] >> 16) & CAM_MASK(48); *cam1 |= ((entry->kw[6] & CAM_MASK(16)) << 48); kw_mask = (entry->kw_mask[5] >> 16) & CAM_MASK(48); kw_mask |= ((entry->kw_mask[6] & CAM_MASK(16)) << 48); break; case 7: /* BANK(X + 3)_CAM_W1<47:0> = MCAM_KEY[KW6]<63:16> */ *cam1 = (entry->kw[6] >> 16) & CAM_MASK(48); kw_mask = (entry->kw_mask[6] >> 16) & CAM_MASK(48); break; } *cam1 &= kw_mask; *cam0 = ~*cam1 & kw_mask; } static void npc_fill_entryword(struct mcam_entry *entry, int idx, u64 cam0, u64 cam1) { /* Similar to npc_get_keyword, but fills mcam_entry structure from * CAM registers. */ switch (idx) { case 0: entry->kw[0] = cam1; entry->kw_mask[0] = cam1 ^ cam0; break; case 1: entry->kw[1] = cam1; entry->kw_mask[1] = cam1 ^ cam0; break; case 2: entry->kw[1] |= (cam1 & CAM_MASK(16)) << 48; entry->kw[2] = (cam1 >> 16) & CAM_MASK(48); entry->kw_mask[1] |= ((cam1 ^ cam0) & CAM_MASK(16)) << 48; entry->kw_mask[2] = ((cam1 ^ cam0) >> 16) & CAM_MASK(48); break; case 3: entry->kw[2] |= (cam1 & CAM_MASK(16)) << 48; entry->kw[3] = (cam1 >> 16) & CAM_MASK(32); entry->kw_mask[2] |= ((cam1 ^ cam0) & CAM_MASK(16)) << 48; entry->kw_mask[3] = ((cam1 ^ cam0) >> 16) & CAM_MASK(32); break; case 4: entry->kw[3] |= (cam1 & CAM_MASK(32)) << 32; entry->kw[4] = (cam1 >> 32) & CAM_MASK(32); entry->kw_mask[3] |= ((cam1 ^ cam0) & CAM_MASK(32)) << 32; entry->kw_mask[4] = ((cam1 ^ cam0) >> 32) & CAM_MASK(32); break; case 5: entry->kw[4] |= (cam1 & CAM_MASK(32)) << 32; entry->kw[5] = (cam1 >> 32) & CAM_MASK(16); entry->kw_mask[4] |= ((cam1 ^ cam0) & CAM_MASK(32)) << 32; entry->kw_mask[5] = ((cam1 ^ cam0) >> 32) & CAM_MASK(16); break; case 6: entry->kw[5] |= (cam1 & CAM_MASK(48)) << 16; entry->kw[6] = (cam1 >> 48) & CAM_MASK(16); entry->kw_mask[5] |= ((cam1 ^ cam0) & CAM_MASK(48)) << 16; entry->kw_mask[6] = ((cam1 ^ cam0) >> 48) & CAM_MASK(16); break; case 7: entry->kw[6] |= (cam1 & CAM_MASK(48)) << 16; entry->kw_mask[6] |= ((cam1 ^ cam0) & CAM_MASK(48)) << 16; break; } } static u64 npc_get_default_entry_action(struct rvu *rvu, struct npc_mcam *mcam, int blkaddr, u16 pf_func) { int bank, nixlf, index; /* get ucast entry rule entry index */ if (nix_get_nixlf(rvu, pf_func, &nixlf, NULL)) { dev_err(rvu->dev, "%s: nixlf not attached to pcifunc:0x%x\n", __func__, pf_func); /* Action 0 is drop */ return 0; } index = npc_get_nixlf_mcam_index(mcam, pf_func, nixlf, NIXLF_UCAST_ENTRY); bank = npc_get_bank(mcam, index); index &= (mcam->banksize - 1); return rvu_read64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_ACTION(index, bank)); } static void npc_fixup_vf_rule(struct rvu *rvu, struct npc_mcam *mcam, int blkaddr, int index, struct mcam_entry *entry, bool *enable) { struct rvu_npc_mcam_rule *rule; u16 owner, target_func; struct rvu_pfvf *pfvf; u64 rx_action; owner = mcam->entry2pfvf_map[index]; target_func = (entry->action >> 4) & 0xffff; /* do nothing when target is LBK/PF or owner is not PF */ if (is_pffunc_af(owner) || is_lbk_vf(rvu, target_func) || (owner & RVU_PFVF_FUNC_MASK) || !(target_func & RVU_PFVF_FUNC_MASK)) return; /* save entry2target_pffunc */ pfvf = rvu_get_pfvf(rvu, target_func); mcam->entry2target_pffunc[index] = target_func; /* don't enable rule when nixlf not attached or initialized */ if (!(is_nixlf_attached(rvu, target_func) && test_bit(NIXLF_INITIALIZED, &pfvf->flags))) *enable = false; /* fix up not needed for the rules added by user(ntuple filters) */ list_for_each_entry(rule, &mcam->mcam_rules, list) { if (rule->entry == index) return; } /* AF modifies given action iff PF/VF has requested for it */ if ((entry->action & 0xFULL) != NIX_RX_ACTION_DEFAULT) return; /* copy VF default entry action to the VF mcam entry */ rx_action = npc_get_default_entry_action(rvu, mcam, blkaddr, target_func); if (rx_action) entry->action = rx_action; } static void npc_config_mcam_entry(struct rvu *rvu, struct npc_mcam *mcam, int blkaddr, int index, u8 intf, struct mcam_entry *entry, bool enable) { int bank = npc_get_bank(mcam, index); int kw = 0, actbank, actindex; u8 tx_intf_mask = ~intf & 0x3; u8 tx_intf = intf; u64 cam0, cam1; actbank = bank; /* Save bank id, to set action later on */ actindex = index; index &= (mcam->banksize - 1); /* Disable before mcam entry update */ npc_enable_mcam_entry(rvu, mcam, blkaddr, actindex, false); /* Clear mcam entry to avoid writes being suppressed by NPC */ npc_clear_mcam_entry(rvu, mcam, blkaddr, actindex); /* CAM1 takes the comparison value and * CAM0 specifies match for a bit in key being '0' or '1' or 'dontcare'. * CAM1<n> = 0 & CAM0<n> = 1 => match if key<n> = 0 * CAM1<n> = 1 & CAM0<n> = 0 => match if key<n> = 1 * CAM1<n> = 0 & CAM0<n> = 0 => always match i.e dontcare. */ for (; bank < (actbank + mcam->banks_per_entry); bank++, kw = kw + 2) { /* Interface should be set in all banks */ if (is_npc_intf_tx(intf)) { /* Last bit must be set and rest don't care * for TX interfaces */ tx_intf_mask = 0x1; tx_intf = intf & tx_intf_mask; tx_intf_mask = ~tx_intf & tx_intf_mask; } rvu_write64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_CAMX_INTF(index, bank, 1), tx_intf); rvu_write64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_CAMX_INTF(index, bank, 0), tx_intf_mask); /* Set the match key */ npc_get_keyword(entry, kw, &cam0, &cam1); rvu_write64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_CAMX_W0(index, bank, 1), cam1); rvu_write64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_CAMX_W0(index, bank, 0), cam0); npc_get_keyword(entry, kw + 1, &cam0, &cam1); rvu_write64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_CAMX_W1(index, bank, 1), cam1); rvu_write64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_CAMX_W1(index, bank, 0), cam0); } /* PF installing VF rule */ if (is_npc_intf_rx(intf) && actindex < mcam->bmap_entries) npc_fixup_vf_rule(rvu, mcam, blkaddr, actindex, entry, &enable); /* Set 'action' */ rvu_write64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_ACTION(index, actbank), entry->action); /* Set TAG 'action' */ rvu_write64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_TAG_ACT(index, actbank), entry->vtag_action); /* Enable the entry */ if (enable) npc_enable_mcam_entry(rvu, mcam, blkaddr, actindex, true); } void npc_read_mcam_entry(struct rvu *rvu, struct npc_mcam *mcam, int blkaddr, u16 src, struct mcam_entry *entry, u8 *intf, u8 *ena) { int sbank = npc_get_bank(mcam, src); int bank, kw = 0; u64 cam0, cam1; src &= (mcam->banksize - 1); bank = sbank; for (; bank < (sbank + mcam->banks_per_entry); bank++, kw = kw + 2) { cam1 = rvu_read64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_CAMX_W0(src, bank, 1)); cam0 = rvu_read64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_CAMX_W0(src, bank, 0)); npc_fill_entryword(entry, kw, cam0, cam1); cam1 = rvu_read64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_CAMX_W1(src, bank, 1)); cam0 = rvu_read64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_CAMX_W1(src, bank, 0)); npc_fill_entryword(entry, kw + 1, cam0, cam1); } entry->action = rvu_read64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_ACTION(src, sbank)); entry->vtag_action = rvu_read64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_TAG_ACT(src, sbank)); *intf = rvu_read64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_CAMX_INTF(src, sbank, 1)) & 3; *ena = rvu_read64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_CFG(src, sbank)) & 1; } static void npc_copy_mcam_entry(struct rvu *rvu, struct npc_mcam *mcam, int blkaddr, u16 src, u16 dest) { int dbank = npc_get_bank(mcam, dest); int sbank = npc_get_bank(mcam, src); u64 cfg, sreg, dreg; int bank, i; src &= (mcam->banksize - 1); dest &= (mcam->banksize - 1); /* Copy INTF's, W0's, W1's CAM0 and CAM1 configuration */ for (bank = 0; bank < mcam->banks_per_entry; bank++) { sreg = NPC_AF_MCAMEX_BANKX_CAMX_INTF(src, sbank + bank, 0); dreg = NPC_AF_MCAMEX_BANKX_CAMX_INTF(dest, dbank + bank, 0); for (i = 0; i < 6; i++) { cfg = rvu_read64(rvu, blkaddr, sreg + (i * 8)); rvu_write64(rvu, blkaddr, dreg + (i * 8), cfg); } } /* Copy action */ cfg = rvu_read64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_ACTION(src, sbank)); rvu_write64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_ACTION(dest, dbank), cfg); /* Copy TAG action */ cfg = rvu_read64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_TAG_ACT(src, sbank)); rvu_write64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_TAG_ACT(dest, dbank), cfg); /* Enable or disable */ cfg = rvu_read64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_CFG(src, sbank)); rvu_write64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_CFG(dest, dbank), cfg); } u64 npc_get_mcam_action(struct rvu *rvu, struct npc_mcam *mcam, int blkaddr, int index) { int bank = npc_get_bank(mcam, index); index &= (mcam->banksize - 1); return rvu_read64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_ACTION(index, bank)); } void npc_set_mcam_action(struct rvu *rvu, struct npc_mcam *mcam, int blkaddr, int index, u64 cfg) { int bank = npc_get_bank(mcam, index); index &= (mcam->banksize - 1); return rvu_write64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_ACTION(index, bank), cfg); } void rvu_npc_install_ucast_entry(struct rvu *rvu, u16 pcifunc, int nixlf, u64 chan, u8 *mac_addr) { struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, pcifunc); struct npc_install_flow_req req = { 0 }; struct npc_install_flow_rsp rsp = { 0 }; struct npc_mcam *mcam = &rvu->hw->mcam; struct nix_rx_action action = { 0 }; int blkaddr, index; /* AF's and SDP VFs work in promiscuous mode */ if (is_lbk_vf(rvu, pcifunc) || is_sdp_vf(rvu, pcifunc)) return; blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0); if (blkaddr < 0) return; /* Ucast rule should not be installed if DMAC * extraction is not supported by the profile. */ if (!npc_is_feature_supported(rvu, BIT_ULL(NPC_DMAC), pfvf->nix_rx_intf)) return; index = npc_get_nixlf_mcam_index(mcam, pcifunc, nixlf, NIXLF_UCAST_ENTRY); /* Don't change the action if entry is already enabled * Otherwise RSS action may get overwritten. */ if (is_mcam_entry_enabled(rvu, mcam, blkaddr, index)) { *(u64 *)&action = npc_get_mcam_action(rvu, mcam, blkaddr, index); } else { action.op = NIX_RX_ACTIONOP_UCAST; action.pf_func = pcifunc; } req.default_rule = 1; ether_addr_copy(req.packet.dmac, mac_addr); eth_broadcast_addr((u8 *)&req.mask.dmac); req.features = BIT_ULL(NPC_DMAC); req.channel = chan; req.chan_mask = 0xFFFU; req.intf = pfvf->nix_rx_intf; req.op = action.op; req.hdr.pcifunc = 0; /* AF is requester */ req.vf = action.pf_func; req.index = action.index; req.match_id = action.match_id; req.flow_key_alg = action.flow_key_alg; rvu_mbox_handler_npc_install_flow(rvu, &req, &rsp); } void rvu_npc_install_promisc_entry(struct rvu *rvu, u16 pcifunc, int nixlf, u64 chan, u8 chan_cnt) { struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, pcifunc); struct npc_install_flow_req req = { 0 }; struct npc_install_flow_rsp rsp = { 0 }; struct npc_mcam *mcam = &rvu->hw->mcam; struct rvu_hwinfo *hw = rvu->hw; int blkaddr, ucast_idx, index; struct nix_rx_action action = { 0 }; u64 relaxed_mask; u8 flow_key_alg; if (!hw->cap.nix_rx_multicast && is_cgx_vf(rvu, pcifunc)) return; blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0); if (blkaddr < 0) return; index = npc_get_nixlf_mcam_index(mcam, pcifunc, nixlf, NIXLF_PROMISC_ENTRY); if (is_cgx_vf(rvu, pcifunc)) index = npc_get_nixlf_mcam_index(mcam, pcifunc & ~RVU_PFVF_FUNC_MASK, nixlf, NIXLF_PROMISC_ENTRY); /* If the corresponding PF's ucast action is RSS, * use the same action for promisc also */ ucast_idx = npc_get_nixlf_mcam_index(mcam, pcifunc, nixlf, NIXLF_UCAST_ENTRY); if (is_mcam_entry_enabled(rvu, mcam, blkaddr, ucast_idx)) *(u64 *)&action = npc_get_mcam_action(rvu, mcam, blkaddr, ucast_idx); if (action.op != NIX_RX_ACTIONOP_RSS) { *(u64 *)&action = 0; action.op = NIX_RX_ACTIONOP_UCAST; } flow_key_alg = action.flow_key_alg; /* RX_ACTION set to MCAST for CGX PF's */ if (hw->cap.nix_rx_multicast && pfvf->use_mce_list && is_pf_cgxmapped(rvu, rvu_get_pf(pcifunc))) { *(u64 *)&action = 0; action.op = NIX_RX_ACTIONOP_MCAST; pfvf = rvu_get_pfvf(rvu, pcifunc & ~RVU_PFVF_FUNC_MASK); action.index = pfvf->promisc_mce_idx; } /* For cn10k the upper two bits of the channel number are * cpt channel number. with masking out these bits in the * mcam entry, same entry used for NIX will allow packets * received from cpt for parsing. */ if (!is_rvu_otx2(rvu)) { req.chan_mask = NIX_CHAN_CPT_X2P_MASK; } else { req.chan_mask = 0xFFFU; } if (chan_cnt > 1) { if (!is_power_of_2(chan_cnt)) { dev_err(rvu->dev, "%s: channel count more than 1, must be power of 2\n", __func__); return; } relaxed_mask = GENMASK_ULL(BITS_PER_LONG_LONG - 1, ilog2(chan_cnt)); req.chan_mask &= relaxed_mask; } req.channel = chan; req.intf = pfvf->nix_rx_intf; req.entry = index; req.op = action.op; req.hdr.pcifunc = 0; /* AF is requester */ req.vf = pcifunc; req.index = action.index; req.match_id = action.match_id; req.flow_key_alg = flow_key_alg; rvu_mbox_handler_npc_install_flow(rvu, &req, &rsp); } void rvu_npc_enable_promisc_entry(struct rvu *rvu, u16 pcifunc, int nixlf, bool enable) { struct npc_mcam *mcam = &rvu->hw->mcam; int blkaddr, index; blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0); if (blkaddr < 0) return; /* Get 'pcifunc' of PF device */ pcifunc = pcifunc & ~RVU_PFVF_FUNC_MASK; index = npc_get_nixlf_mcam_index(mcam, pcifunc, nixlf, NIXLF_PROMISC_ENTRY); npc_enable_mcam_entry(rvu, mcam, blkaddr, index, enable); } void rvu_npc_install_bcast_match_entry(struct rvu *rvu, u16 pcifunc, int nixlf, u64 chan) { struct rvu_pfvf *pfvf; struct npc_install_flow_req req = { 0 }; struct npc_install_flow_rsp rsp = { 0 }; struct npc_mcam *mcam = &rvu->hw->mcam; struct rvu_hwinfo *hw = rvu->hw; int blkaddr, index; blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0); if (blkaddr < 0) return; /* Skip LBK VFs */ if (is_lbk_vf(rvu, pcifunc)) return; /* If pkt replication is not supported, * then only PF is allowed to add a bcast match entry. */ if (!hw->cap.nix_rx_multicast && is_vf(pcifunc)) return; /* Get 'pcifunc' of PF device */ pcifunc = pcifunc & ~RVU_PFVF_FUNC_MASK; pfvf = rvu_get_pfvf(rvu, pcifunc); /* Bcast rule should not be installed if both DMAC * and LXMB extraction is not supported by the profile. */ if (!npc_is_feature_supported(rvu, BIT_ULL(NPC_DMAC), pfvf->nix_rx_intf) && !npc_is_feature_supported(rvu, BIT_ULL(NPC_LXMB), pfvf->nix_rx_intf)) return; index = npc_get_nixlf_mcam_index(mcam, pcifunc, nixlf, NIXLF_BCAST_ENTRY); if (!hw->cap.nix_rx_multicast) { /* Early silicon doesn't support pkt replication, * so install entry with UCAST action, so that PF * receives all broadcast packets. */ req.op = NIX_RX_ACTIONOP_UCAST; } else { req.op = NIX_RX_ACTIONOP_MCAST; req.index = pfvf->bcast_mce_idx; } eth_broadcast_addr((u8 *)&req.packet.dmac); eth_broadcast_addr((u8 *)&req.mask.dmac); req.features = BIT_ULL(NPC_DMAC); req.channel = chan; req.chan_mask = 0xFFFU; req.intf = pfvf->nix_rx_intf; req.entry = index; req.hdr.pcifunc = 0; /* AF is requester */ req.vf = pcifunc; rvu_mbox_handler_npc_install_flow(rvu, &req, &rsp); } void rvu_npc_enable_bcast_entry(struct rvu *rvu, u16 pcifunc, int nixlf, bool enable) { struct npc_mcam *mcam = &rvu->hw->mcam; int blkaddr, index; blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0); if (blkaddr < 0) return; /* Get 'pcifunc' of PF device */ pcifunc = pcifunc & ~RVU_PFVF_FUNC_MASK; index = npc_get_nixlf_mcam_index(mcam, pcifunc, nixlf, NIXLF_BCAST_ENTRY); npc_enable_mcam_entry(rvu, mcam, blkaddr, index, enable); } void rvu_npc_install_allmulti_entry(struct rvu *rvu, u16 pcifunc, int nixlf, u64 chan) { struct npc_install_flow_req req = { 0 }; struct npc_install_flow_rsp rsp = { 0 }; struct npc_mcam *mcam = &rvu->hw->mcam; struct rvu_hwinfo *hw = rvu->hw; int blkaddr, ucast_idx, index; u8 mac_addr[ETH_ALEN] = { 0 }; struct nix_rx_action action = { 0 }; struct rvu_pfvf *pfvf; u8 flow_key_alg; u16 vf_func; /* Only CGX PF/VF can add allmulticast entry */ if (is_lbk_vf(rvu, pcifunc) && is_sdp_vf(rvu, pcifunc)) return; blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0); if (blkaddr < 0) return; /* Get 'pcifunc' of PF device */ vf_func = pcifunc & RVU_PFVF_FUNC_MASK; pcifunc = pcifunc & ~RVU_PFVF_FUNC_MASK; pfvf = rvu_get_pfvf(rvu, pcifunc); /* Mcast rule should not be installed if both DMAC * and LXMB extraction is not supported by the profile. */ if (!npc_is_feature_supported(rvu, BIT_ULL(NPC_DMAC), pfvf->nix_rx_intf) && !npc_is_feature_supported(rvu, BIT_ULL(NPC_LXMB), pfvf->nix_rx_intf)) return; index = npc_get_nixlf_mcam_index(mcam, pcifunc, nixlf, NIXLF_ALLMULTI_ENTRY); /* If the corresponding PF's ucast action is RSS, * use the same action for multicast entry also */ ucast_idx = npc_get_nixlf_mcam_index(mcam, pcifunc, nixlf, NIXLF_UCAST_ENTRY); if (is_mcam_entry_enabled(rvu, mcam, blkaddr, ucast_idx)) *(u64 *)&action = npc_get_mcam_action(rvu, mcam, blkaddr, ucast_idx); flow_key_alg = action.flow_key_alg; if (action.op != NIX_RX_ACTIONOP_RSS) { *(u64 *)&action = 0; action.op = NIX_RX_ACTIONOP_UCAST; action.pf_func = pcifunc; } /* RX_ACTION set to MCAST for CGX PF's */ if (hw->cap.nix_rx_multicast && pfvf->use_mce_list) { *(u64 *)&action = 0; action.op = NIX_RX_ACTIONOP_MCAST; action.index = pfvf->mcast_mce_idx; } mac_addr[0] = 0x01; /* LSB bit of 1st byte in DMAC */ ether_addr_copy(req.packet.dmac, mac_addr); ether_addr_copy(req.mask.dmac, mac_addr); req.features = BIT_ULL(NPC_DMAC); /* For cn10k the upper two bits of the channel number are * cpt channel number. with masking out these bits in the * mcam entry, same entry used for NIX will allow packets * received from cpt for parsing. */ if (!is_rvu_otx2(rvu)) req.chan_mask = NIX_CHAN_CPT_X2P_MASK; else req.chan_mask = 0xFFFU; req.channel = chan; req.intf = pfvf->nix_rx_intf; req.entry = index; req.op = action.op; req.hdr.pcifunc = 0; /* AF is requester */ req.vf = pcifunc | vf_func; req.index = action.index; req.match_id = action.match_id; req.flow_key_alg = flow_key_alg; rvu_mbox_handler_npc_install_flow(rvu, &req, &rsp); } void rvu_npc_enable_allmulti_entry(struct rvu *rvu, u16 pcifunc, int nixlf, bool enable) { struct npc_mcam *mcam = &rvu->hw->mcam; int blkaddr, index; blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0); if (blkaddr < 0) return; /* Get 'pcifunc' of PF device */ pcifunc = pcifunc & ~RVU_PFVF_FUNC_MASK; index = npc_get_nixlf_mcam_index(mcam, pcifunc, nixlf, NIXLF_ALLMULTI_ENTRY); npc_enable_mcam_entry(rvu, mcam, blkaddr, index, enable); } static void npc_update_vf_flow_entry(struct rvu *rvu, struct npc_mcam *mcam, int blkaddr, u16 pcifunc, u64 rx_action) { int actindex, index, bank, entry; struct rvu_npc_mcam_rule *rule; bool enable, update; if (!(pcifunc & RVU_PFVF_FUNC_MASK)) return; mutex_lock(&mcam->lock); for (index = 0; index < mcam->bmap_entries; index++) { if (mcam->entry2target_pffunc[index] == pcifunc) { update = true; /* update not needed for the rules added via ntuple filters */ list_for_each_entry(rule, &mcam->mcam_rules, list) { if (rule->entry == index) update = false; } if (!update) continue; bank = npc_get_bank(mcam, index); actindex = index; entry = index & (mcam->banksize - 1); /* read vf flow entry enable status */ enable = is_mcam_entry_enabled(rvu, mcam, blkaddr, actindex); /* disable before mcam entry update */ npc_enable_mcam_entry(rvu, mcam, blkaddr, actindex, false); /* update 'action' */ rvu_write64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_ACTION(entry, bank), rx_action); if (enable) npc_enable_mcam_entry(rvu, mcam, blkaddr, actindex, true); } } mutex_unlock(&mcam->lock); } static void npc_update_rx_action_with_alg_idx(struct rvu *rvu, struct nix_rx_action action, struct rvu_pfvf *pfvf, int mcam_index, int blkaddr, int alg_idx) { struct npc_mcam *mcam = &rvu->hw->mcam; struct rvu_hwinfo *hw = rvu->hw; int bank, op_rss; if (!is_mcam_entry_enabled(rvu, mcam, blkaddr, mcam_index)) return; op_rss = (!hw->cap.nix_rx_multicast || !pfvf->use_mce_list); bank = npc_get_bank(mcam, mcam_index); mcam_index &= (mcam->banksize - 1); /* If Rx action is MCAST update only RSS algorithm index */ if (!op_rss) { *(u64 *)&action = rvu_read64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_ACTION(mcam_index, bank)); action.flow_key_alg = alg_idx; } rvu_write64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_ACTION(mcam_index, bank), *(u64 *)&action); } void rvu_npc_update_flowkey_alg_idx(struct rvu *rvu, u16 pcifunc, int nixlf, int group, int alg_idx, int mcam_index) { struct npc_mcam *mcam = &rvu->hw->mcam; struct nix_rx_action action; int blkaddr, index, bank; struct rvu_pfvf *pfvf; blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0); if (blkaddr < 0) return; /* Check if this is for reserved default entry */ if (mcam_index < 0) { if (group != DEFAULT_RSS_CONTEXT_GROUP) return; index = npc_get_nixlf_mcam_index(mcam, pcifunc, nixlf, NIXLF_UCAST_ENTRY); } else { /* TODO: validate this mcam index */ index = mcam_index; } if (index >= mcam->total_entries) return; bank = npc_get_bank(mcam, index); index &= (mcam->banksize - 1); *(u64 *)&action = rvu_read64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_ACTION(index, bank)); /* Ignore if no action was set earlier */ if (!*(u64 *)&action) return; action.op = NIX_RX_ACTIONOP_RSS; action.pf_func = pcifunc; action.index = group; action.flow_key_alg = alg_idx; rvu_write64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_ACTION(index, bank), *(u64 *)&action); /* update the VF flow rule action with the VF default entry action */ if (mcam_index < 0) npc_update_vf_flow_entry(rvu, mcam, blkaddr, pcifunc, *(u64 *)&action); /* update the action change in default rule */ pfvf = rvu_get_pfvf(rvu, pcifunc); if (pfvf->def_ucast_rule) pfvf->def_ucast_rule->rx_action = action; index = npc_get_nixlf_mcam_index(mcam, pcifunc, nixlf, NIXLF_PROMISC_ENTRY); /* If PF's promiscuous entry is enabled, * Set RSS action for that entry as well */ npc_update_rx_action_with_alg_idx(rvu, action, pfvf, index, blkaddr, alg_idx); index = npc_get_nixlf_mcam_index(mcam, pcifunc, nixlf, NIXLF_ALLMULTI_ENTRY); /* If PF's allmulti entry is enabled, * Set RSS action for that entry as well */ npc_update_rx_action_with_alg_idx(rvu, action, pfvf, index, blkaddr, alg_idx); } void npc_enadis_default_mce_entry(struct rvu *rvu, u16 pcifunc, int nixlf, int type, bool enable) { struct npc_mcam *mcam = &rvu->hw->mcam; struct rvu_hwinfo *hw = rvu->hw; struct nix_mce_list *mce_list; int index, blkaddr, mce_idx; struct rvu_pfvf *pfvf; blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0); if (blkaddr < 0) return; index = npc_get_nixlf_mcam_index(mcam, pcifunc & ~RVU_PFVF_FUNC_MASK, nixlf, type); /* disable MCAM entry when packet replication is not supported by hw */ if (!hw->cap.nix_rx_multicast && !is_vf(pcifunc)) { npc_enable_mcam_entry(rvu, mcam, blkaddr, index, enable); return; } /* return incase mce list is not enabled */ pfvf = rvu_get_pfvf(rvu, pcifunc & ~RVU_PFVF_FUNC_MASK); if (hw->cap.nix_rx_multicast && is_vf(pcifunc) && type != NIXLF_BCAST_ENTRY && !pfvf->use_mce_list) return; nix_get_mce_list(rvu, pcifunc, type, &mce_list, &mce_idx); nix_update_mce_list(rvu, pcifunc, mce_list, mce_idx, index, enable); if (enable) npc_enable_mcam_entry(rvu, mcam, blkaddr, index, enable); } static void npc_enadis_default_entries(struct rvu *rvu, u16 pcifunc, int nixlf, bool enable) { struct npc_mcam *mcam = &rvu->hw->mcam; int index, blkaddr; blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0); if (blkaddr < 0) return; /* Ucast MCAM match entry of this PF/VF */ index = npc_get_nixlf_mcam_index(mcam, pcifunc, nixlf, NIXLF_UCAST_ENTRY); npc_enable_mcam_entry(rvu, mcam, blkaddr, index, enable); /* Nothing to do for VFs, on platforms where pkt replication * is not supported */ if ((pcifunc & RVU_PFVF_FUNC_MASK) && !rvu->hw->cap.nix_rx_multicast) return; /* add/delete pf_func to broadcast MCE list */ npc_enadis_default_mce_entry(rvu, pcifunc, nixlf, NIXLF_BCAST_ENTRY, enable); } void rvu_npc_disable_default_entries(struct rvu *rvu, u16 pcifunc, int nixlf) { if (nixlf < 0) return; npc_enadis_default_entries(rvu, pcifunc, nixlf, false); /* Delete multicast and promisc MCAM entries */ npc_enadis_default_mce_entry(rvu, pcifunc, nixlf, NIXLF_ALLMULTI_ENTRY, false); npc_enadis_default_mce_entry(rvu, pcifunc, nixlf, NIXLF_PROMISC_ENTRY, false); } bool rvu_npc_enable_mcam_by_entry_index(struct rvu *rvu, int entry, int intf, bool enable) { int blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0); struct npc_mcam *mcam = &rvu->hw->mcam; struct rvu_npc_mcam_rule *rule, *tmp; mutex_lock(&mcam->lock); list_for_each_entry_safe(rule, tmp, &mcam->mcam_rules, list) { if (rule->intf != intf) continue; if (rule->entry != entry) continue; rule->enable = enable; mutex_unlock(&mcam->lock); npc_enable_mcam_entry(rvu, mcam, blkaddr, entry, enable); return true; } mutex_unlock(&mcam->lock); return false; } void rvu_npc_enable_default_entries(struct rvu *rvu, u16 pcifunc, int nixlf) { if (nixlf < 0) return; /* Enables only broadcast match entry. Promisc/Allmulti are enabled * in set_rx_mode mbox handler. */ npc_enadis_default_entries(rvu, pcifunc, nixlf, true); } void rvu_npc_disable_mcam_entries(struct rvu *rvu, u16 pcifunc, int nixlf) { struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, pcifunc); struct npc_mcam *mcam = &rvu->hw->mcam; struct rvu_npc_mcam_rule *rule, *tmp; int blkaddr; blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0); if (blkaddr < 0) return; mutex_lock(&mcam->lock); /* Disable MCAM entries directing traffic to this 'pcifunc' */ list_for_each_entry_safe(rule, tmp, &mcam->mcam_rules, list) { if (is_npc_intf_rx(rule->intf) && rule->rx_action.pf_func == pcifunc && rule->rx_action.op != NIX_RX_ACTIONOP_MCAST) { npc_enable_mcam_entry(rvu, mcam, blkaddr, rule->entry, false); rule->enable = false; /* Indicate that default rule is disabled */ if (rule->default_rule) { pfvf->def_ucast_rule = NULL; list_del(&rule->list); kfree(rule); } } } mutex_unlock(&mcam->lock); npc_mcam_disable_flows(rvu, pcifunc); rvu_npc_disable_default_entries(rvu, pcifunc, nixlf); } void rvu_npc_free_mcam_entries(struct rvu *rvu, u16 pcifunc, int nixlf) { struct npc_mcam *mcam = &rvu->hw->mcam; struct rvu_npc_mcam_rule *rule, *tmp; int blkaddr; blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0); if (blkaddr < 0) return; mutex_lock(&mcam->lock); /* Free all MCAM entries owned by this 'pcifunc' */ npc_mcam_free_all_entries(rvu, mcam, blkaddr, pcifunc); /* Free all MCAM counters owned by this 'pcifunc' */ npc_mcam_free_all_counters(rvu, mcam, pcifunc); /* Delete MCAM entries owned by this 'pcifunc' */ list_for_each_entry_safe(rule, tmp, &mcam->mcam_rules, list) { if (rule->owner == pcifunc && !rule->default_rule) { list_del(&rule->list); kfree(rule); } } mutex_unlock(&mcam->lock); rvu_npc_disable_default_entries(rvu, pcifunc, nixlf); } static void npc_program_mkex_rx(struct rvu *rvu, int blkaddr, struct npc_mcam_kex *mkex, u8 intf) { int lid, lt, ld, fl; if (is_npc_intf_tx(intf)) return; rvu_write64(rvu, blkaddr, NPC_AF_INTFX_KEX_CFG(intf), mkex->keyx_cfg[NIX_INTF_RX]); /* Program LDATA */ for (lid = 0; lid < NPC_MAX_LID; lid++) { for (lt = 0; lt < NPC_MAX_LT; lt++) { for (ld = 0; ld < NPC_MAX_LD; ld++) SET_KEX_LD(intf, lid, lt, ld, mkex->intf_lid_lt_ld[NIX_INTF_RX] [lid][lt][ld]); } } /* Program LFLAGS */ for (ld = 0; ld < NPC_MAX_LD; ld++) { for (fl = 0; fl < NPC_MAX_LFL; fl++) SET_KEX_LDFLAGS(intf, ld, fl, mkex->intf_ld_flags[NIX_INTF_RX] [ld][fl]); } } static void npc_program_mkex_tx(struct rvu *rvu, int blkaddr, struct npc_mcam_kex *mkex, u8 intf) { int lid, lt, ld, fl; if (is_npc_intf_rx(intf)) return; rvu_write64(rvu, blkaddr, NPC_AF_INTFX_KEX_CFG(intf), mkex->keyx_cfg[NIX_INTF_TX]); /* Program LDATA */ for (lid = 0; lid < NPC_MAX_LID; lid++) { for (lt = 0; lt < NPC_MAX_LT; lt++) { for (ld = 0; ld < NPC_MAX_LD; ld++) SET_KEX_LD(intf, lid, lt, ld, mkex->intf_lid_lt_ld[NIX_INTF_TX] [lid][lt][ld]); } } /* Program LFLAGS */ for (ld = 0; ld < NPC_MAX_LD; ld++) { for (fl = 0; fl < NPC_MAX_LFL; fl++) SET_KEX_LDFLAGS(intf, ld, fl, mkex->intf_ld_flags[NIX_INTF_TX] [ld][fl]); } } static void npc_program_mkex_profile(struct rvu *rvu, int blkaddr, struct npc_mcam_kex *mkex) { struct rvu_hwinfo *hw = rvu->hw; u8 intf; int ld; for (ld = 0; ld < NPC_MAX_LD; ld++) rvu_write64(rvu, blkaddr, NPC_AF_KEX_LDATAX_FLAGS_CFG(ld), mkex->kex_ld_flags[ld]); for (intf = 0; intf < hw->npc_intfs; intf++) { npc_program_mkex_rx(rvu, blkaddr, mkex, intf); npc_program_mkex_tx(rvu, blkaddr, mkex, intf); } /* Programme mkex hash profile */ npc_program_mkex_hash(rvu, blkaddr); } static int npc_fwdb_prfl_img_map(struct rvu *rvu, void __iomem **prfl_img_addr, u64 *size) { u64 prfl_addr, prfl_sz; if (!rvu->fwdata) return -EINVAL; prfl_addr = rvu->fwdata->mcam_addr; prfl_sz = rvu->fwdata->mcam_sz; if (!prfl_addr || !prfl_sz) return -EINVAL; *prfl_img_addr = ioremap_wc(prfl_addr, prfl_sz); if (!(*prfl_img_addr)) return -ENOMEM; *size = prfl_sz; return 0; } /* strtoull of "mkexprof" with base:36 */ #define MKEX_END_SIGN 0xdeadbeef static void npc_load_mkex_profile(struct rvu *rvu, int blkaddr, const char *mkex_profile) { struct device *dev = &rvu->pdev->dev; struct npc_mcam_kex *mcam_kex; void __iomem *mkex_prfl_addr = NULL; u64 prfl_sz; int ret; /* If user not selected mkex profile */ if (rvu->kpu_fwdata_sz || !strncmp(mkex_profile, def_pfl_name, MKEX_NAME_LEN)) goto program_mkex; /* Setting up the mapping for mkex profile image */ ret = npc_fwdb_prfl_img_map(rvu, &mkex_prfl_addr, &prfl_sz); if (ret < 0) goto program_mkex; mcam_kex = (struct npc_mcam_kex __force *)mkex_prfl_addr; while (((s64)prfl_sz > 0) && (mcam_kex->mkex_sign != MKEX_END_SIGN)) { /* Compare with mkex mod_param name string */ if (mcam_kex->mkex_sign == MKEX_SIGN && !strncmp(mcam_kex->name, mkex_profile, MKEX_NAME_LEN)) { /* Due to an errata (35786) in A0/B0 pass silicon, * parse nibble enable configuration has to be * identical for both Rx and Tx interfaces. */ if (!is_rvu_96xx_B0(rvu) || mcam_kex->keyx_cfg[NIX_INTF_RX] == mcam_kex->keyx_cfg[NIX_INTF_TX]) rvu->kpu.mkex = mcam_kex; goto program_mkex; } mcam_kex++; prfl_sz -= sizeof(struct npc_mcam_kex); } dev_warn(dev, "Failed to load requested profile: %s\n", mkex_profile); program_mkex: dev_info(rvu->dev, "Using %s mkex profile\n", rvu->kpu.mkex->name); /* Program selected mkex profile */ npc_program_mkex_profile(rvu, blkaddr, rvu->kpu.mkex); if (mkex_prfl_addr) iounmap(mkex_prfl_addr); } static void npc_config_kpuaction(struct rvu *rvu, int blkaddr, const struct npc_kpu_profile_action *kpuaction, int kpu, int entry, bool pkind) { struct npc_kpu_action0 action0 = {0}; struct npc_kpu_action1 action1 = {0}; u64 reg; action1.errlev = kpuaction->errlev; action1.errcode = kpuaction->errcode; action1.dp0_offset = kpuaction->dp0_offset; action1.dp1_offset = kpuaction->dp1_offset; action1.dp2_offset = kpuaction->dp2_offset; if (pkind) reg = NPC_AF_PKINDX_ACTION1(entry); else reg = NPC_AF_KPUX_ENTRYX_ACTION1(kpu, entry); rvu_write64(rvu, blkaddr, reg, *(u64 *)&action1); action0.byp_count = kpuaction->bypass_count; action0.capture_ena = kpuaction->cap_ena; action0.parse_done = kpuaction->parse_done; action0.next_state = kpuaction->next_state; action0.capture_lid = kpuaction->lid; action0.capture_ltype = kpuaction->ltype; action0.capture_flags = kpuaction->flags; action0.ptr_advance = kpuaction->ptr_advance; action0.var_len_offset = kpuaction->offset; action0.var_len_mask = kpuaction->mask; action0.var_len_right = kpuaction->right; action0.var_len_shift = kpuaction->shift; if (pkind) reg = NPC_AF_PKINDX_ACTION0(entry); else reg = NPC_AF_KPUX_ENTRYX_ACTION0(kpu, entry); rvu_write64(rvu, blkaddr, reg, *(u64 *)&action0); } static void npc_config_kpucam(struct rvu *rvu, int blkaddr, const struct npc_kpu_profile_cam *kpucam, int kpu, int entry) { struct npc_kpu_cam cam0 = {0}; struct npc_kpu_cam cam1 = {0}; cam1.state = kpucam->state & kpucam->state_mask; cam1.dp0_data = kpucam->dp0 & kpucam->dp0_mask; cam1.dp1_data = kpucam->dp1 & kpucam->dp1_mask; cam1.dp2_data = kpucam->dp2 & kpucam->dp2_mask; cam0.state = ~kpucam->state & kpucam->state_mask; cam0.dp0_data = ~kpucam->dp0 & kpucam->dp0_mask; cam0.dp1_data = ~kpucam->dp1 & kpucam->dp1_mask; cam0.dp2_data = ~kpucam->dp2 & kpucam->dp2_mask; rvu_write64(rvu, blkaddr, NPC_AF_KPUX_ENTRYX_CAMX(kpu, entry, 0), *(u64 *)&cam0); rvu_write64(rvu, blkaddr, NPC_AF_KPUX_ENTRYX_CAMX(kpu, entry, 1), *(u64 *)&cam1); } static inline u64 enable_mask(int count) { return (((count) < 64) ? ~(BIT_ULL(count) - 1) : (0x00ULL)); } static void npc_program_kpu_profile(struct rvu *rvu, int blkaddr, int kpu, const struct npc_kpu_profile *profile) { int entry, num_entries, max_entries; u64 entry_mask; if (profile->cam_entries != profile->action_entries) { dev_err(rvu->dev, "KPU%d: CAM and action entries [%d != %d] not equal\n", kpu, profile->cam_entries, profile->action_entries); } max_entries = rvu->hw->npc_kpu_entries; /* Program CAM match entries for previous KPU extracted data */ num_entries = min_t(int, profile->cam_entries, max_entries); for (entry = 0; entry < num_entries; entry++) npc_config_kpucam(rvu, blkaddr, &profile->cam[entry], kpu, entry); /* Program this KPU's actions */ num_entries = min_t(int, profile->action_entries, max_entries); for (entry = 0; entry < num_entries; entry++) npc_config_kpuaction(rvu, blkaddr, &profile->action[entry], kpu, entry, false); /* Enable all programmed entries */ num_entries = min_t(int, profile->action_entries, profile->cam_entries); entry_mask = enable_mask(num_entries); /* Disable first KPU_MAX_CST_ENT entries for built-in profile */ if (!rvu->kpu.custom) entry_mask |= GENMASK_ULL(KPU_MAX_CST_ENT - 1, 0); rvu_write64(rvu, blkaddr, NPC_AF_KPUX_ENTRY_DISX(kpu, 0), entry_mask); if (num_entries > 64) { rvu_write64(rvu, blkaddr, NPC_AF_KPUX_ENTRY_DISX(kpu, 1), enable_mask(num_entries - 64)); } /* Enable this KPU */ rvu_write64(rvu, blkaddr, NPC_AF_KPUX_CFG(kpu), 0x01); } static int npc_prepare_default_kpu(struct npc_kpu_profile_adapter *profile) { profile->custom = 0; profile->name = def_pfl_name; profile->version = NPC_KPU_PROFILE_VER; profile->ikpu = ikpu_action_entries; profile->pkinds = ARRAY_SIZE(ikpu_action_entries); profile->kpu = npc_kpu_profiles; profile->kpus = ARRAY_SIZE(npc_kpu_profiles); profile->lt_def = &npc_lt_defaults; profile->mkex = &npc_mkex_default; profile->mkex_hash = &npc_mkex_hash_default; return 0; } static int npc_apply_custom_kpu(struct rvu *rvu, struct npc_kpu_profile_adapter *profile) { size_t hdr_sz = sizeof(struct npc_kpu_profile_fwdata), offset = 0; struct npc_kpu_profile_fwdata *fw = rvu->kpu_fwdata; struct npc_kpu_profile_action *action; struct npc_kpu_profile_cam *cam; struct npc_kpu_fwdata *fw_kpu; int entries; u16 kpu, entry; if (rvu->kpu_fwdata_sz < hdr_sz) { dev_warn(rvu->dev, "Invalid KPU profile size\n"); return -EINVAL; } if (le64_to_cpu(fw->signature) != KPU_SIGN) { dev_warn(rvu->dev, "Invalid KPU profile signature %llx\n", fw->signature); return -EINVAL; } /* Verify if the using known profile structure */ if (NPC_KPU_VER_MAJ(profile->version) > NPC_KPU_VER_MAJ(NPC_KPU_PROFILE_VER)) { dev_warn(rvu->dev, "Not supported Major version: %d > %d\n", NPC_KPU_VER_MAJ(profile->version), NPC_KPU_VER_MAJ(NPC_KPU_PROFILE_VER)); return -EINVAL; } /* Verify if profile is aligned with the required kernel changes */ if (NPC_KPU_VER_MIN(profile->version) < NPC_KPU_VER_MIN(NPC_KPU_PROFILE_VER)) { dev_warn(rvu->dev, "Invalid KPU profile version: %d.%d.%d expected version <= %d.%d.%d\n", NPC_KPU_VER_MAJ(profile->version), NPC_KPU_VER_MIN(profile->version), NPC_KPU_VER_PATCH(profile->version), NPC_KPU_VER_MAJ(NPC_KPU_PROFILE_VER), NPC_KPU_VER_MIN(NPC_KPU_PROFILE_VER), NPC_KPU_VER_PATCH(NPC_KPU_PROFILE_VER)); return -EINVAL; } /* Verify if profile fits the HW */ if (fw->kpus > profile->kpus) { dev_warn(rvu->dev, "Not enough KPUs: %d > %ld\n", fw->kpus, profile->kpus); return -EINVAL; } profile->custom = 1; profile->name = fw->name; profile->version = le64_to_cpu(fw->version); profile->mkex = &fw->mkex; profile->lt_def = &fw->lt_def; for (kpu = 0; kpu < fw->kpus; kpu++) { fw_kpu = (struct npc_kpu_fwdata *)(fw->data + offset); if (fw_kpu->entries > KPU_MAX_CST_ENT) dev_warn(rvu->dev, "Too many custom entries on KPU%d: %d > %d\n", kpu, fw_kpu->entries, KPU_MAX_CST_ENT); entries = min(fw_kpu->entries, KPU_MAX_CST_ENT); cam = (struct npc_kpu_profile_cam *)fw_kpu->data; offset += sizeof(*fw_kpu) + fw_kpu->entries * sizeof(*cam); action = (struct npc_kpu_profile_action *)(fw->data + offset); offset += fw_kpu->entries * sizeof(*action); if (rvu->kpu_fwdata_sz < hdr_sz + offset) { dev_warn(rvu->dev, "Profile size mismatch on KPU%i parsing.\n", kpu + 1); return -EINVAL; } for (entry = 0; entry < entries; entry++) { profile->kpu[kpu].cam[entry] = cam[entry]; profile->kpu[kpu].action[entry] = action[entry]; } } return 0; } static int npc_load_kpu_prfl_img(struct rvu *rvu, void __iomem *prfl_addr, u64 prfl_sz, const char *kpu_profile) { struct npc_kpu_profile_fwdata *kpu_data = NULL; int rc = -EINVAL; kpu_data = (struct npc_kpu_profile_fwdata __force *)prfl_addr; if (le64_to_cpu(kpu_data->signature) == KPU_SIGN && !strncmp(kpu_data->name, kpu_profile, KPU_NAME_LEN)) { dev_info(rvu->dev, "Loading KPU profile from firmware db: %s\n", kpu_profile); rvu->kpu_fwdata = kpu_data; rvu->kpu_fwdata_sz = prfl_sz; rvu->kpu_prfl_addr = prfl_addr; rc = 0; } return rc; } static int npc_fwdb_detect_load_prfl_img(struct rvu *rvu, uint64_t prfl_sz, const char *kpu_profile) { struct npc_coalesced_kpu_prfl *img_data = NULL; int i = 0, rc = -EINVAL; void __iomem *kpu_prfl_addr; u32 offset; img_data = (struct npc_coalesced_kpu_prfl __force *)rvu->kpu_prfl_addr; if (le64_to_cpu(img_data->signature) == KPU_SIGN && !strncmp(img_data->name, kpu_profile, KPU_NAME_LEN)) { /* Loaded profile is a single KPU profile. */ rc = npc_load_kpu_prfl_img(rvu, rvu->kpu_prfl_addr, prfl_sz, kpu_profile); goto done; } /* Loaded profile is coalesced image, offset of first KPU profile.*/ offset = offsetof(struct npc_coalesced_kpu_prfl, prfl_sz) + (img_data->num_prfl * sizeof(uint16_t)); /* Check if mapped image is coalesced image. */ while (i < img_data->num_prfl) { /* Profile image offsets are rounded up to next 8 multiple.*/ offset = ALIGN_8B_CEIL(offset); kpu_prfl_addr = (void __iomem *)((uintptr_t)rvu->kpu_prfl_addr + offset); rc = npc_load_kpu_prfl_img(rvu, kpu_prfl_addr, img_data->prfl_sz[i], kpu_profile); if (!rc) break; /* Calculating offset of profile image based on profile size.*/ offset += img_data->prfl_sz[i]; i++; } done: return rc; } static int npc_load_kpu_profile_fwdb(struct rvu *rvu, const char *kpu_profile) { int ret = -EINVAL; u64 prfl_sz; /* Setting up the mapping for NPC profile image */ ret = npc_fwdb_prfl_img_map(rvu, &rvu->kpu_prfl_addr, &prfl_sz); if (ret < 0) goto done; /* Detect if profile is coalesced or single KPU profile and load */ ret = npc_fwdb_detect_load_prfl_img(rvu, prfl_sz, kpu_profile); if (ret == 0) goto done; /* Cleaning up if KPU profile image from fwdata is not valid. */ if (rvu->kpu_prfl_addr) { iounmap(rvu->kpu_prfl_addr); rvu->kpu_prfl_addr = NULL; rvu->kpu_fwdata_sz = 0; rvu->kpu_fwdata = NULL; } done: return ret; } static void npc_load_kpu_profile(struct rvu *rvu) { struct npc_kpu_profile_adapter *profile = &rvu->kpu; const char *kpu_profile = rvu->kpu_pfl_name; const struct firmware *fw = NULL; bool retry_fwdb = false; /* If user not specified profile customization */ if (!strncmp(kpu_profile, def_pfl_name, KPU_NAME_LEN)) goto revert_to_default; /* First prepare default KPU, then we'll customize top entries. */ npc_prepare_default_kpu(profile); /* Order of preceedence for load loading NPC profile (high to low) * Firmware binary in filesystem. * Firmware database method. * Default KPU profile. */ if (!request_firmware_direct(&fw, kpu_profile, rvu->dev)) { dev_info(rvu->dev, "Loading KPU profile from firmware: %s\n", kpu_profile); rvu->kpu_fwdata = kzalloc(fw->size, GFP_KERNEL); if (rvu->kpu_fwdata) { memcpy(rvu->kpu_fwdata, fw->data, fw->size); rvu->kpu_fwdata_sz = fw->size; } release_firmware(fw); retry_fwdb = true; goto program_kpu; } load_image_fwdb: /* Loading the KPU profile using firmware database */ if (npc_load_kpu_profile_fwdb(rvu, kpu_profile)) goto revert_to_default; program_kpu: /* Apply profile customization if firmware was loaded. */ if (!rvu->kpu_fwdata_sz || npc_apply_custom_kpu(rvu, profile)) { /* If image from firmware filesystem fails to load or invalid * retry with firmware database method. */ if (rvu->kpu_fwdata || rvu->kpu_fwdata_sz) { /* Loading image from firmware database failed. */ if (rvu->kpu_prfl_addr) { iounmap(rvu->kpu_prfl_addr); rvu->kpu_prfl_addr = NULL; } else { kfree(rvu->kpu_fwdata); } rvu->kpu_fwdata = NULL; rvu->kpu_fwdata_sz = 0; if (retry_fwdb) { retry_fwdb = false; goto load_image_fwdb; } } dev_warn(rvu->dev, "Can't load KPU profile %s. Using default.\n", kpu_profile); kfree(rvu->kpu_fwdata); rvu->kpu_fwdata = NULL; goto revert_to_default; } dev_info(rvu->dev, "Using custom profile '%s', version %d.%d.%d\n", profile->name, NPC_KPU_VER_MAJ(profile->version), NPC_KPU_VER_MIN(profile->version), NPC_KPU_VER_PATCH(profile->version)); return; revert_to_default: npc_prepare_default_kpu(profile); } static void npc_parser_profile_init(struct rvu *rvu, int blkaddr) { struct rvu_hwinfo *hw = rvu->hw; int num_pkinds, num_kpus, idx; /* Disable all KPUs and their entries */ for (idx = 0; idx < hw->npc_kpus; idx++) { rvu_write64(rvu, blkaddr, NPC_AF_KPUX_ENTRY_DISX(idx, 0), ~0ULL); rvu_write64(rvu, blkaddr, NPC_AF_KPUX_ENTRY_DISX(idx, 1), ~0ULL); rvu_write64(rvu, blkaddr, NPC_AF_KPUX_CFG(idx), 0x00); } /* Load and customize KPU profile. */ npc_load_kpu_profile(rvu); /* First program IKPU profile i.e PKIND configs. * Check HW max count to avoid configuring junk or * writing to unsupported CSR addresses. */ num_pkinds = rvu->kpu.pkinds; num_pkinds = min_t(int, hw->npc_pkinds, num_pkinds); for (idx = 0; idx < num_pkinds; idx++) npc_config_kpuaction(rvu, blkaddr, &rvu->kpu.ikpu[idx], 0, idx, true); /* Program KPU CAM and Action profiles */ num_kpus = rvu->kpu.kpus; num_kpus = min_t(int, hw->npc_kpus, num_kpus); for (idx = 0; idx < num_kpus; idx++) npc_program_kpu_profile(rvu, blkaddr, idx, &rvu->kpu.kpu[idx]); } void npc_mcam_rsrcs_deinit(struct rvu *rvu) { struct npc_mcam *mcam = &rvu->hw->mcam; bitmap_free(mcam->bmap); bitmap_free(mcam->bmap_reverse); kfree(mcam->entry2pfvf_map); kfree(mcam->cntr2pfvf_map); kfree(mcam->entry2cntr_map); kfree(mcam->cntr_refcnt); kfree(mcam->entry2target_pffunc); kfree(mcam->counters.bmap); } int npc_mcam_rsrcs_init(struct rvu *rvu, int blkaddr) { int nixlf_count = rvu_get_nixlf_count(rvu); struct npc_mcam *mcam = &rvu->hw->mcam; int rsvd, err; u16 index; int cntr; u64 cfg; /* Actual number of MCAM entries vary by entry size */ cfg = (rvu_read64(rvu, blkaddr, NPC_AF_INTFX_KEX_CFG(0)) >> 32) & 0x07; mcam->total_entries = (mcam->banks / BIT_ULL(cfg)) * mcam->banksize; mcam->keysize = cfg; /* Number of banks combined per MCAM entry */ if (cfg == NPC_MCAM_KEY_X4) mcam->banks_per_entry = 4; else if (cfg == NPC_MCAM_KEY_X2) mcam->banks_per_entry = 2; else mcam->banks_per_entry = 1; /* Reserve one MCAM entry for each of the NIX LF to * guarantee space to install default matching DMAC rule. * Also reserve 2 MCAM entries for each PF for default * channel based matching or 'bcast & promisc' matching to * support BCAST and PROMISC modes of operation for PFs. * PF0 is excluded. */ rsvd = (nixlf_count * RSVD_MCAM_ENTRIES_PER_NIXLF) + ((rvu->hw->total_pfs - 1) * RSVD_MCAM_ENTRIES_PER_PF); if (mcam->total_entries <= rsvd) { dev_warn(rvu->dev, "Insufficient NPC MCAM size %d for pkt I/O, exiting\n", mcam->total_entries); return -ENOMEM; } mcam->bmap_entries = mcam->total_entries - rsvd; mcam->nixlf_offset = mcam->bmap_entries; mcam->pf_offset = mcam->nixlf_offset + nixlf_count; /* Allocate bitmaps for managing MCAM entries */ mcam->bmap = bitmap_zalloc(mcam->bmap_entries, GFP_KERNEL); if (!mcam->bmap) return -ENOMEM; mcam->bmap_reverse = bitmap_zalloc(mcam->bmap_entries, GFP_KERNEL); if (!mcam->bmap_reverse) goto free_bmap; mcam->bmap_fcnt = mcam->bmap_entries; /* Alloc memory for saving entry to RVU PFFUNC allocation mapping */ mcam->entry2pfvf_map = kcalloc(mcam->bmap_entries, sizeof(u16), GFP_KERNEL); if (!mcam->entry2pfvf_map) goto free_bmap_reverse; /* Reserve 1/8th of MCAM entries at the bottom for low priority * allocations and another 1/8th at the top for high priority * allocations. */ mcam->lprio_count = mcam->bmap_entries / 8; if (mcam->lprio_count > BITS_PER_LONG) mcam->lprio_count = round_down(mcam->lprio_count, BITS_PER_LONG); mcam->lprio_start = mcam->bmap_entries - mcam->lprio_count; mcam->hprio_count = mcam->lprio_count; mcam->hprio_end = mcam->hprio_count; /* Allocate bitmap for managing MCAM counters and memory * for saving counter to RVU PFFUNC allocation mapping. */ err = rvu_alloc_bitmap(&mcam->counters); if (err) goto free_entry_map; mcam->cntr2pfvf_map = kcalloc(mcam->counters.max, sizeof(u16), GFP_KERNEL); if (!mcam->cntr2pfvf_map) goto free_cntr_bmap; /* Alloc memory for MCAM entry to counter mapping and for tracking * counter's reference count. */ mcam->entry2cntr_map = kcalloc(mcam->bmap_entries, sizeof(u16), GFP_KERNEL); if (!mcam->entry2cntr_map) goto free_cntr_map; mcam->cntr_refcnt = kcalloc(mcam->counters.max, sizeof(u16), GFP_KERNEL); if (!mcam->cntr_refcnt) goto free_entry_cntr_map; /* Alloc memory for saving target device of mcam rule */ mcam->entry2target_pffunc = kmalloc_array(mcam->total_entries, sizeof(u16), GFP_KERNEL); if (!mcam->entry2target_pffunc) goto free_cntr_refcnt; for (index = 0; index < mcam->bmap_entries; index++) { mcam->entry2pfvf_map[index] = NPC_MCAM_INVALID_MAP; mcam->entry2cntr_map[index] = NPC_MCAM_INVALID_MAP; } for (cntr = 0; cntr < mcam->counters.max; cntr++) mcam->cntr2pfvf_map[cntr] = NPC_MCAM_INVALID_MAP; mutex_init(&mcam->lock); return 0; free_cntr_refcnt: kfree(mcam->cntr_refcnt); free_entry_cntr_map: kfree(mcam->entry2cntr_map); free_cntr_map: kfree(mcam->cntr2pfvf_map); free_cntr_bmap: kfree(mcam->counters.bmap); free_entry_map: kfree(mcam->entry2pfvf_map); free_bmap_reverse: bitmap_free(mcam->bmap_reverse); free_bmap: bitmap_free(mcam->bmap); return -ENOMEM; } static void rvu_npc_hw_init(struct rvu *rvu, int blkaddr) { struct npc_pkind *pkind = &rvu->hw->pkind; struct npc_mcam *mcam = &rvu->hw->mcam; struct rvu_hwinfo *hw = rvu->hw; u64 npc_const, npc_const1; u64 npc_const2 = 0; npc_const = rvu_read64(rvu, blkaddr, NPC_AF_CONST); npc_const1 = rvu_read64(rvu, blkaddr, NPC_AF_CONST1); if (npc_const1 & BIT_ULL(63)) npc_const2 = rvu_read64(rvu, blkaddr, NPC_AF_CONST2); pkind->rsrc.max = NPC_UNRESERVED_PKIND_COUNT; hw->npc_pkinds = (npc_const1 >> 12) & 0xFFULL; hw->npc_kpu_entries = npc_const1 & 0xFFFULL; hw->npc_kpus = (npc_const >> 8) & 0x1FULL; hw->npc_intfs = npc_const & 0xFULL; hw->npc_counters = (npc_const >> 48) & 0xFFFFULL; mcam->banks = (npc_const >> 44) & 0xFULL; mcam->banksize = (npc_const >> 28) & 0xFFFFULL; hw->npc_stat_ena = BIT_ULL(9); /* Extended set */ if (npc_const2) { hw->npc_ext_set = true; /* 96xx supports only match_stats and npc_counters * reflected in NPC_AF_CONST reg. * STAT_SEL and ENA are at [0:8] and 9 bit positions. * 98xx has both match_stat and ext and npc_counter * reflected in NPC_AF_CONST2 * STAT_SEL_EXT added at [12:14] bit position. * cn10k supports only ext and hence npc_counters in * NPC_AF_CONST is 0 and npc_counters reflected in NPC_AF_CONST2. * STAT_SEL bitpos incremented from [0:8] to [0:11] and ENA bit moved to 63 */ if (!hw->npc_counters) hw->npc_stat_ena = BIT_ULL(63); hw->npc_counters = (npc_const2 >> 16) & 0xFFFFULL; mcam->banksize = npc_const2 & 0xFFFFULL; } mcam->counters.max = hw->npc_counters; } static void rvu_npc_setup_interfaces(struct rvu *rvu, int blkaddr) { struct npc_mcam_kex *mkex = rvu->kpu.mkex; struct npc_mcam *mcam = &rvu->hw->mcam; struct rvu_hwinfo *hw = rvu->hw; u64 nibble_ena, rx_kex, tx_kex; u8 intf; /* Reserve last counter for MCAM RX miss action which is set to * drop packet. This way we will know how many pkts didn't match * any MCAM entry. */ mcam->counters.max--; mcam->rx_miss_act_cntr = mcam->counters.max; rx_kex = mkex->keyx_cfg[NIX_INTF_RX]; tx_kex = mkex->keyx_cfg[NIX_INTF_TX]; nibble_ena = FIELD_GET(NPC_PARSE_NIBBLE, rx_kex); nibble_ena = rvu_npc_get_tx_nibble_cfg(rvu, nibble_ena); if (nibble_ena) { tx_kex &= ~NPC_PARSE_NIBBLE; tx_kex |= FIELD_PREP(NPC_PARSE_NIBBLE, nibble_ena); mkex->keyx_cfg[NIX_INTF_TX] = tx_kex; } /* Configure RX interfaces */ for (intf = 0; intf < hw->npc_intfs; intf++) { if (is_npc_intf_tx(intf)) continue; /* Set RX MCAM search key size. LA..LE (ltype only) + Channel */ rvu_write64(rvu, blkaddr, NPC_AF_INTFX_KEX_CFG(intf), rx_kex); /* If MCAM lookup doesn't result in a match, drop the received * packet. And map this action to a counter to count dropped * packets. */ rvu_write64(rvu, blkaddr, NPC_AF_INTFX_MISS_ACT(intf), NIX_RX_ACTIONOP_DROP); /* NPC_AF_INTFX_MISS_STAT_ACT[14:12] - counter[11:9] * NPC_AF_INTFX_MISS_STAT_ACT[8:0] - counter[8:0] */ rvu_write64(rvu, blkaddr, NPC_AF_INTFX_MISS_STAT_ACT(intf), ((mcam->rx_miss_act_cntr >> 9) << 12) | hw->npc_stat_ena | mcam->rx_miss_act_cntr); } /* Configure TX interfaces */ for (intf = 0; intf < hw->npc_intfs; intf++) { if (is_npc_intf_rx(intf)) continue; /* Extract Ltypes LID_LA to LID_LE */ rvu_write64(rvu, blkaddr, NPC_AF_INTFX_KEX_CFG(intf), tx_kex); /* Set TX miss action to UCAST_DEFAULT i.e * transmit the packet on NIX LF SQ's default channel. */ rvu_write64(rvu, blkaddr, NPC_AF_INTFX_MISS_ACT(intf), NIX_TX_ACTIONOP_UCAST_DEFAULT); } } int rvu_npc_init(struct rvu *rvu) { struct npc_kpu_profile_adapter *kpu = &rvu->kpu; struct npc_pkind *pkind = &rvu->hw->pkind; struct npc_mcam *mcam = &rvu->hw->mcam; int blkaddr, entry, bank, err; blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0); if (blkaddr < 0) { dev_err(rvu->dev, "%s: NPC block not implemented\n", __func__); return -ENODEV; } rvu_npc_hw_init(rvu, blkaddr); /* First disable all MCAM entries, to stop traffic towards NIXLFs */ for (bank = 0; bank < mcam->banks; bank++) { for (entry = 0; entry < mcam->banksize; entry++) rvu_write64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_CFG(entry, bank), 0); } err = rvu_alloc_bitmap(&pkind->rsrc); if (err) return err; /* Reserve PKIND#0 for LBKs. Power reset value of LBK_CH_PKIND is '0', * no need to configure PKIND for all LBKs separately. */ rvu_alloc_rsrc(&pkind->rsrc); /* Allocate mem for pkind to PF and channel mapping info */ pkind->pfchan_map = devm_kcalloc(rvu->dev, pkind->rsrc.max, sizeof(u32), GFP_KERNEL); if (!pkind->pfchan_map) return -ENOMEM; /* Configure KPU profile */ npc_parser_profile_init(rvu, blkaddr); /* Config Outer L2, IPv4's NPC layer info */ rvu_write64(rvu, blkaddr, NPC_AF_PCK_DEF_OL2, (kpu->lt_def->pck_ol2.lid << 8) | (kpu->lt_def->pck_ol2.ltype_match << 4) | kpu->lt_def->pck_ol2.ltype_mask); rvu_write64(rvu, blkaddr, NPC_AF_PCK_DEF_OIP4, (kpu->lt_def->pck_oip4.lid << 8) | (kpu->lt_def->pck_oip4.ltype_match << 4) | kpu->lt_def->pck_oip4.ltype_mask); /* Config Inner IPV4 NPC layer info */ rvu_write64(rvu, blkaddr, NPC_AF_PCK_DEF_IIP4, (kpu->lt_def->pck_iip4.lid << 8) | (kpu->lt_def->pck_iip4.ltype_match << 4) | kpu->lt_def->pck_iip4.ltype_mask); /* Enable below for Rx pkts. * - Outer IPv4 header checksum validation. * - Detect outer L2 broadcast address and set NPC_RESULT_S[L2B]. * - Detect outer L2 multicast address and set NPC_RESULT_S[L2M]. * - Inner IPv4 header checksum validation. * - Set non zero checksum error code value */ rvu_write64(rvu, blkaddr, NPC_AF_PCK_CFG, rvu_read64(rvu, blkaddr, NPC_AF_PCK_CFG) | ((u64)NPC_EC_OIP4_CSUM << 32) | (NPC_EC_IIP4_CSUM << 24) | BIT_ULL(7) | BIT_ULL(6) | BIT_ULL(2) | BIT_ULL(1)); rvu_npc_setup_interfaces(rvu, blkaddr); npc_config_secret_key(rvu, blkaddr); /* Configure MKEX profile */ npc_load_mkex_profile(rvu, blkaddr, rvu->mkex_pfl_name); err = npc_mcam_rsrcs_init(rvu, blkaddr); if (err) return err; err = npc_flow_steering_init(rvu, blkaddr); if (err) { dev_err(rvu->dev, "Incorrect mkex profile loaded using default mkex\n"); npc_load_mkex_profile(rvu, blkaddr, def_pfl_name); } return 0; } void rvu_npc_freemem(struct rvu *rvu) { struct npc_pkind *pkind = &rvu->hw->pkind; struct npc_mcam *mcam = &rvu->hw->mcam; kfree(pkind->rsrc.bmap); npc_mcam_rsrcs_deinit(rvu); if (rvu->kpu_prfl_addr) iounmap(rvu->kpu_prfl_addr); else kfree(rvu->kpu_fwdata); mutex_destroy(&mcam->lock); } void rvu_npc_get_mcam_entry_alloc_info(struct rvu *rvu, u16 pcifunc, int blkaddr, int *alloc_cnt, int *enable_cnt) { struct npc_mcam *mcam = &rvu->hw->mcam; int entry; *alloc_cnt = 0; *enable_cnt = 0; for (entry = 0; entry < mcam->bmap_entries; entry++) { if (mcam->entry2pfvf_map[entry] == pcifunc) { (*alloc_cnt)++; if (is_mcam_entry_enabled(rvu, mcam, blkaddr, entry)) (*enable_cnt)++; } } } void rvu_npc_get_mcam_counter_alloc_info(struct rvu *rvu, u16 pcifunc, int blkaddr, int *alloc_cnt, int *enable_cnt) { struct npc_mcam *mcam = &rvu->hw->mcam; int cntr; *alloc_cnt = 0; *enable_cnt = 0; for (cntr = 0; cntr < mcam->counters.max; cntr++) { if (mcam->cntr2pfvf_map[cntr] == pcifunc) { (*alloc_cnt)++; if (mcam->cntr_refcnt[cntr]) (*enable_cnt)++; } } } static int npc_mcam_verify_entry(struct npc_mcam *mcam, u16 pcifunc, int entry) { /* verify AF installed entries */ if (is_pffunc_af(pcifunc)) return 0; /* Verify if entry is valid and if it is indeed * allocated to the requesting PFFUNC. */ if (entry >= mcam->bmap_entries) return NPC_MCAM_INVALID_REQ; if (pcifunc != mcam->entry2pfvf_map[entry]) return NPC_MCAM_PERM_DENIED; return 0; } static int npc_mcam_verify_counter(struct npc_mcam *mcam, u16 pcifunc, int cntr) { /* Verify if counter is valid and if it is indeed * allocated to the requesting PFFUNC. */ if (cntr >= mcam->counters.max) return NPC_MCAM_INVALID_REQ; if (pcifunc != mcam->cntr2pfvf_map[cntr]) return NPC_MCAM_PERM_DENIED; return 0; } static void npc_map_mcam_entry_and_cntr(struct rvu *rvu, struct npc_mcam *mcam, int blkaddr, u16 entry, u16 cntr) { u16 index = entry & (mcam->banksize - 1); u32 bank = npc_get_bank(mcam, entry); struct rvu_hwinfo *hw = rvu->hw; /* Set mapping and increment counter's refcnt */ mcam->entry2cntr_map[entry] = cntr; mcam->cntr_refcnt[cntr]++; /* Enable stats */ rvu_write64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_STAT_ACT(index, bank), ((cntr >> 9) << 12) | hw->npc_stat_ena | cntr); } static void npc_unmap_mcam_entry_and_cntr(struct rvu *rvu, struct npc_mcam *mcam, int blkaddr, u16 entry, u16 cntr) { u16 index = entry & (mcam->banksize - 1); u32 bank = npc_get_bank(mcam, entry); /* Remove mapping and reduce counter's refcnt */ mcam->entry2cntr_map[entry] = NPC_MCAM_INVALID_MAP; mcam->cntr_refcnt[cntr]--; /* Disable stats */ rvu_write64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_STAT_ACT(index, bank), 0x00); } /* Sets MCAM entry in bitmap as used. Update * reverse bitmap too. Should be called with * 'mcam->lock' held. */ static void npc_mcam_set_bit(struct npc_mcam *mcam, u16 index) { u16 entry, rentry; entry = index; rentry = mcam->bmap_entries - index - 1; __set_bit(entry, mcam->bmap); __set_bit(rentry, mcam->bmap_reverse); mcam->bmap_fcnt--; } /* Sets MCAM entry in bitmap as free. Update * reverse bitmap too. Should be called with * 'mcam->lock' held. */ static void npc_mcam_clear_bit(struct npc_mcam *mcam, u16 index) { u16 entry, rentry; entry = index; rentry = mcam->bmap_entries - index - 1; __clear_bit(entry, mcam->bmap); __clear_bit(rentry, mcam->bmap_reverse); mcam->bmap_fcnt++; } static void npc_mcam_free_all_entries(struct rvu *rvu, struct npc_mcam *mcam, int blkaddr, u16 pcifunc) { u16 index, cntr; /* Scan all MCAM entries and free the ones mapped to 'pcifunc' */ for (index = 0; index < mcam->bmap_entries; index++) { if (mcam->entry2pfvf_map[index] == pcifunc) { mcam->entry2pfvf_map[index] = NPC_MCAM_INVALID_MAP; /* Free the entry in bitmap */ npc_mcam_clear_bit(mcam, index); /* Disable the entry */ npc_enable_mcam_entry(rvu, mcam, blkaddr, index, false); /* Update entry2counter mapping */ cntr = mcam->entry2cntr_map[index]; if (cntr != NPC_MCAM_INVALID_MAP) npc_unmap_mcam_entry_and_cntr(rvu, mcam, blkaddr, index, cntr); mcam->entry2target_pffunc[index] = 0x0; } } } static void npc_mcam_free_all_counters(struct rvu *rvu, struct npc_mcam *mcam, u16 pcifunc) { u16 cntr; /* Scan all MCAM counters and free the ones mapped to 'pcifunc' */ for (cntr = 0; cntr < mcam->counters.max; cntr++) { if (mcam->cntr2pfvf_map[cntr] == pcifunc) { mcam->cntr2pfvf_map[cntr] = NPC_MCAM_INVALID_MAP; mcam->cntr_refcnt[cntr] = 0; rvu_free_rsrc(&mcam->counters, cntr); /* This API is expected to be called after freeing * MCAM entries, which inturn will remove * 'entry to counter' mapping. * No need to do it again. */ } } } /* Find area of contiguous free entries of size 'nr'. * If not found return max contiguous free entries available. */ static u16 npc_mcam_find_zero_area(unsigned long *map, u16 size, u16 start, u16 nr, u16 *max_area) { u16 max_area_start = 0; u16 index, next, end; *max_area = 0; again: index = find_next_zero_bit(map, size, start); if (index >= size) return max_area_start; end = ((index + nr) >= size) ? size : index + nr; next = find_next_bit(map, end, index); if (*max_area < (next - index)) { *max_area = next - index; max_area_start = index; } if (next < end) { start = next + 1; goto again; } return max_area_start; } /* Find number of free MCAM entries available * within range i.e in between 'start' and 'end'. */ static u16 npc_mcam_get_free_count(unsigned long *map, u16 start, u16 end) { u16 index, next; u16 fcnt = 0; again: if (start >= end) return fcnt; index = find_next_zero_bit(map, end, start); if (index >= end) return fcnt; next = find_next_bit(map, end, index); if (next <= end) { fcnt += next - index; start = next + 1; goto again; } fcnt += end - index; return fcnt; } static void npc_get_mcam_search_range_priority(struct npc_mcam *mcam, struct npc_mcam_alloc_entry_req *req, u16 *start, u16 *end, bool *reverse) { u16 fcnt; if (req->priority == NPC_MCAM_HIGHER_PRIO) goto hprio; /* For a low priority entry allocation * - If reference entry is not in hprio zone then * search range: ref_entry to end. * - If reference entry is in hprio zone and if * request can be accomodated in non-hprio zone then * search range: 'start of middle zone' to 'end' * - else search in reverse, so that less number of hprio * zone entries are allocated. */ *reverse = false; *start = req->ref_entry + 1; *end = mcam->bmap_entries; if (req->ref_entry >= mcam->hprio_end) return; fcnt = npc_mcam_get_free_count(mcam->bmap, mcam->hprio_end, mcam->bmap_entries); if (fcnt > req->count) *start = mcam->hprio_end; else *reverse = true; return; hprio: /* For a high priority entry allocation, search is always * in reverse to preserve hprio zone entries. * - If reference entry is not in lprio zone then * search range: 0 to ref_entry. * - If reference entry is in lprio zone and if * request can be accomodated in middle zone then * search range: 'hprio_end' to 'lprio_start' */ *reverse = true; *start = 0; *end = req->ref_entry; if (req->ref_entry <= mcam->lprio_start) return; fcnt = npc_mcam_get_free_count(mcam->bmap, mcam->hprio_end, mcam->lprio_start); if (fcnt < req->count) return; *start = mcam->hprio_end; *end = mcam->lprio_start; } static int npc_mcam_alloc_entries(struct npc_mcam *mcam, u16 pcifunc, struct npc_mcam_alloc_entry_req *req, struct npc_mcam_alloc_entry_rsp *rsp) { u16 entry_list[NPC_MAX_NONCONTIG_ENTRIES]; u16 fcnt, hp_fcnt, lp_fcnt; u16 start, end, index; int entry, next_start; bool reverse = false; unsigned long *bmap; u16 max_contig; mutex_lock(&mcam->lock); /* Check if there are any free entries */ if (!mcam->bmap_fcnt) { mutex_unlock(&mcam->lock); return NPC_MCAM_ALLOC_FAILED; } /* MCAM entries are divided into high priority, middle and * low priority zones. Idea is to not allocate top and lower * most entries as much as possible, this is to increase * probability of honouring priority allocation requests. * * Two bitmaps are used for mcam entry management, * mcam->bmap for forward search i.e '0 to mcam->bmap_entries'. * mcam->bmap_reverse for reverse search i.e 'mcam->bmap_entries to 0'. * * Reverse bitmap is used to allocate entries * - when a higher priority entry is requested * - when available free entries are less. * Lower priority ones out of avaialble free entries are always * chosen when 'high vs low' question arises. * * For a VF base MCAM match rule is set by its PF. And all the * further MCAM rules installed by VF on its own are * concatenated with the base rule set by its PF. Hence PF entries * should be at lower priority compared to VF entries. Otherwise * base rule is hit always and rules installed by VF will be of * no use. Hence if the request is from PF then allocate low * priority entries. */ if (!(pcifunc & RVU_PFVF_FUNC_MASK)) goto lprio_alloc; /* Get the search range for priority allocation request */ if (req->priority) { npc_get_mcam_search_range_priority(mcam, req, &start, &end, &reverse); goto alloc; } /* Find out the search range for non-priority allocation request * * Get MCAM free entry count in middle zone. */ lp_fcnt = npc_mcam_get_free_count(mcam->bmap, mcam->lprio_start, mcam->bmap_entries); hp_fcnt = npc_mcam_get_free_count(mcam->bmap, 0, mcam->hprio_end); fcnt = mcam->bmap_fcnt - lp_fcnt - hp_fcnt; /* Check if request can be accomodated in the middle zone */ if (fcnt > req->count) { start = mcam->hprio_end; end = mcam->lprio_start; } else if ((fcnt + (hp_fcnt / 2) + (lp_fcnt / 2)) > req->count) { /* Expand search zone from half of hprio zone to * half of lprio zone. */ start = mcam->hprio_end / 2; end = mcam->bmap_entries - (mcam->lprio_count / 2); reverse = true; } else { /* Not enough free entries, search all entries in reverse, * so that low priority ones will get used up. */ lprio_alloc: reverse = true; start = 0; end = mcam->bmap_entries; /* Ensure PF requests are always at bottom and if PF requests * for higher/lower priority entry wrt reference entry then * honour that criteria and start search for entries from bottom * and not in mid zone. */ if (!(pcifunc & RVU_PFVF_FUNC_MASK) && req->priority == NPC_MCAM_HIGHER_PRIO) end = req->ref_entry; if (!(pcifunc & RVU_PFVF_FUNC_MASK) && req->priority == NPC_MCAM_LOWER_PRIO) start = req->ref_entry; } alloc: if (reverse) { bmap = mcam->bmap_reverse; start = mcam->bmap_entries - start; end = mcam->bmap_entries - end; swap(start, end); } else { bmap = mcam->bmap; } if (req->contig) { /* Allocate requested number of contiguous entries, if * unsuccessful find max contiguous entries available. */ index = npc_mcam_find_zero_area(bmap, end, start, req->count, &max_contig); rsp->count = max_contig; if (reverse) rsp->entry = mcam->bmap_entries - index - max_contig; else rsp->entry = index; } else { /* Allocate requested number of non-contiguous entries, * if unsuccessful allocate as many as possible. */ rsp->count = 0; next_start = start; for (entry = 0; entry < req->count; entry++) { index = find_next_zero_bit(bmap, end, next_start); if (index >= end) break; next_start = start + (index - start) + 1; /* Save the entry's index */ if (reverse) index = mcam->bmap_entries - index - 1; entry_list[entry] = index; rsp->count++; } } /* If allocating requested no of entries is unsucessful, * expand the search range to full bitmap length and retry. */ if (!req->priority && (rsp->count < req->count) && ((end - start) != mcam->bmap_entries)) { reverse = true; start = 0; end = mcam->bmap_entries; goto alloc; } /* For priority entry allocation requests, if allocation is * failed then expand search to max possible range and retry. */ if (req->priority && rsp->count < req->count) { if (req->priority == NPC_MCAM_LOWER_PRIO && (start != (req->ref_entry + 1))) { start = req->ref_entry + 1; end = mcam->bmap_entries; reverse = false; goto alloc; } else if ((req->priority == NPC_MCAM_HIGHER_PRIO) && ((end - start) != req->ref_entry)) { start = 0; end = req->ref_entry; reverse = true; goto alloc; } } /* Copy MCAM entry indices into mbox response entry_list. * Requester always expects indices in ascending order, so * reverse the list if reverse bitmap is used for allocation. */ if (!req->contig && rsp->count) { index = 0; for (entry = rsp->count - 1; entry >= 0; entry--) { if (reverse) rsp->entry_list[index++] = entry_list[entry]; else rsp->entry_list[entry] = entry_list[entry]; } } /* Mark the allocated entries as used and set nixlf mapping */ for (entry = 0; entry < rsp->count; entry++) { index = req->contig ? (rsp->entry + entry) : rsp->entry_list[entry]; npc_mcam_set_bit(mcam, index); mcam->entry2pfvf_map[index] = pcifunc; mcam->entry2cntr_map[index] = NPC_MCAM_INVALID_MAP; } /* Update available free count in mbox response */ rsp->free_count = mcam->bmap_fcnt; mutex_unlock(&mcam->lock); return 0; } /* Marks bitmaps to reserved the mcam slot */ void npc_mcam_rsrcs_reserve(struct rvu *rvu, int blkaddr, int entry_idx) { struct npc_mcam *mcam = &rvu->hw->mcam; npc_mcam_set_bit(mcam, entry_idx); } int rvu_mbox_handler_npc_mcam_alloc_entry(struct rvu *rvu, struct npc_mcam_alloc_entry_req *req, struct npc_mcam_alloc_entry_rsp *rsp) { struct npc_mcam *mcam = &rvu->hw->mcam; u16 pcifunc = req->hdr.pcifunc; int blkaddr; blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0); if (blkaddr < 0) return NPC_MCAM_INVALID_REQ; rsp->entry = NPC_MCAM_ENTRY_INVALID; rsp->free_count = 0; /* Check if ref_entry is greater that the range * then set it to max value. */ if (req->ref_entry > mcam->bmap_entries) req->ref_entry = mcam->bmap_entries; /* ref_entry can't be '0' if requested priority is high. * Can't be last entry if requested priority is low. */ if ((!req->ref_entry && req->priority == NPC_MCAM_HIGHER_PRIO) || ((req->ref_entry == mcam->bmap_entries) && req->priority == NPC_MCAM_LOWER_PRIO)) return NPC_MCAM_INVALID_REQ; /* Since list of allocated indices needs to be sent to requester, * max number of non-contiguous entries per mbox msg is limited. */ if (!req->contig && req->count > NPC_MAX_NONCONTIG_ENTRIES) { dev_err(rvu->dev, "%s: %d Non-contiguous MCAM entries requested is more than max (%d) allowed\n", __func__, req->count, NPC_MAX_NONCONTIG_ENTRIES); return NPC_MCAM_INVALID_REQ; } /* Alloc request from PFFUNC with no NIXLF attached should be denied */ if (!is_pffunc_af(pcifunc) && !is_nixlf_attached(rvu, pcifunc)) return NPC_MCAM_ALLOC_DENIED; return npc_mcam_alloc_entries(mcam, pcifunc, req, rsp); } int rvu_mbox_handler_npc_mcam_free_entry(struct rvu *rvu, struct npc_mcam_free_entry_req *req, struct msg_rsp *rsp) { struct npc_mcam *mcam = &rvu->hw->mcam; u16 pcifunc = req->hdr.pcifunc; int blkaddr, rc = 0; u16 cntr; blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0); if (blkaddr < 0) return NPC_MCAM_INVALID_REQ; /* Free request from PFFUNC with no NIXLF attached, ignore */ if (!is_pffunc_af(pcifunc) && !is_nixlf_attached(rvu, pcifunc)) return NPC_MCAM_INVALID_REQ; mutex_lock(&mcam->lock); if (req->all) goto free_all; rc = npc_mcam_verify_entry(mcam, pcifunc, req->entry); if (rc) goto exit; mcam->entry2pfvf_map[req->entry] = NPC_MCAM_INVALID_MAP; mcam->entry2target_pffunc[req->entry] = 0x0; npc_mcam_clear_bit(mcam, req->entry); npc_enable_mcam_entry(rvu, mcam, blkaddr, req->entry, false); /* Update entry2counter mapping */ cntr = mcam->entry2cntr_map[req->entry]; if (cntr != NPC_MCAM_INVALID_MAP) npc_unmap_mcam_entry_and_cntr(rvu, mcam, blkaddr, req->entry, cntr); goto exit; free_all: /* Free up all entries allocated to requesting PFFUNC */ npc_mcam_free_all_entries(rvu, mcam, blkaddr, pcifunc); exit: mutex_unlock(&mcam->lock); return rc; } int rvu_mbox_handler_npc_mcam_read_entry(struct rvu *rvu, struct npc_mcam_read_entry_req *req, struct npc_mcam_read_entry_rsp *rsp) { struct npc_mcam *mcam = &rvu->hw->mcam; u16 pcifunc = req->hdr.pcifunc; int blkaddr, rc; blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0); if (blkaddr < 0) return NPC_MCAM_INVALID_REQ; mutex_lock(&mcam->lock); rc = npc_mcam_verify_entry(mcam, pcifunc, req->entry); if (!rc) { npc_read_mcam_entry(rvu, mcam, blkaddr, req->entry, &rsp->entry_data, &rsp->intf, &rsp->enable); } mutex_unlock(&mcam->lock); return rc; } int rvu_mbox_handler_npc_mcam_write_entry(struct rvu *rvu, struct npc_mcam_write_entry_req *req, struct msg_rsp *rsp) { struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, req->hdr.pcifunc); struct npc_mcam *mcam = &rvu->hw->mcam; u16 pcifunc = req->hdr.pcifunc; int blkaddr, rc; u8 nix_intf; blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0); if (blkaddr < 0) return NPC_MCAM_INVALID_REQ; mutex_lock(&mcam->lock); rc = npc_mcam_verify_entry(mcam, pcifunc, req->entry); if (rc) goto exit; if (req->set_cntr && npc_mcam_verify_counter(mcam, pcifunc, req->cntr)) { rc = NPC_MCAM_INVALID_REQ; goto exit; } if (!is_npc_interface_valid(rvu, req->intf)) { rc = NPC_MCAM_INVALID_REQ; goto exit; } if (is_npc_intf_tx(req->intf)) nix_intf = pfvf->nix_tx_intf; else nix_intf = pfvf->nix_rx_intf; /* For AF installed rules, the nix_intf should be set to target NIX */ if (is_pffunc_af(req->hdr.pcifunc)) nix_intf = req->intf; npc_config_mcam_entry(rvu, mcam, blkaddr, req->entry, nix_intf, &req->entry_data, req->enable_entry); if (req->set_cntr) npc_map_mcam_entry_and_cntr(rvu, mcam, blkaddr, req->entry, req->cntr); rc = 0; exit: mutex_unlock(&mcam->lock); return rc; } int rvu_mbox_handler_npc_mcam_ena_entry(struct rvu *rvu, struct npc_mcam_ena_dis_entry_req *req, struct msg_rsp *rsp) { struct npc_mcam *mcam = &rvu->hw->mcam; u16 pcifunc = req->hdr.pcifunc; int blkaddr, rc; blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0); if (blkaddr < 0) return NPC_MCAM_INVALID_REQ; mutex_lock(&mcam->lock); rc = npc_mcam_verify_entry(mcam, pcifunc, req->entry); mutex_unlock(&mcam->lock); if (rc) return rc; npc_enable_mcam_entry(rvu, mcam, blkaddr, req->entry, true); return 0; } int rvu_mbox_handler_npc_mcam_dis_entry(struct rvu *rvu, struct npc_mcam_ena_dis_entry_req *req, struct msg_rsp *rsp) { struct npc_mcam *mcam = &rvu->hw->mcam; u16 pcifunc = req->hdr.pcifunc; int blkaddr, rc; blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0); if (blkaddr < 0) return NPC_MCAM_INVALID_REQ; mutex_lock(&mcam->lock); rc = npc_mcam_verify_entry(mcam, pcifunc, req->entry); mutex_unlock(&mcam->lock); if (rc) return rc; npc_enable_mcam_entry(rvu, mcam, blkaddr, req->entry, false); return 0; } int rvu_mbox_handler_npc_mcam_shift_entry(struct rvu *rvu, struct npc_mcam_shift_entry_req *req, struct npc_mcam_shift_entry_rsp *rsp) { struct npc_mcam *mcam = &rvu->hw->mcam; u16 pcifunc = req->hdr.pcifunc; u16 old_entry, new_entry; int blkaddr, rc = 0; u16 index, cntr; blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0); if (blkaddr < 0) return NPC_MCAM_INVALID_REQ; if (req->shift_count > NPC_MCAM_MAX_SHIFTS) return NPC_MCAM_INVALID_REQ; mutex_lock(&mcam->lock); for (index = 0; index < req->shift_count; index++) { old_entry = req->curr_entry[index]; new_entry = req->new_entry[index]; /* Check if both old and new entries are valid and * does belong to this PFFUNC or not. */ rc = npc_mcam_verify_entry(mcam, pcifunc, old_entry); if (rc) break; rc = npc_mcam_verify_entry(mcam, pcifunc, new_entry); if (rc) break; /* new_entry should not have a counter mapped */ if (mcam->entry2cntr_map[new_entry] != NPC_MCAM_INVALID_MAP) { rc = NPC_MCAM_PERM_DENIED; break; } /* Disable the new_entry */ npc_enable_mcam_entry(rvu, mcam, blkaddr, new_entry, false); /* Copy rule from old entry to new entry */ npc_copy_mcam_entry(rvu, mcam, blkaddr, old_entry, new_entry); /* Copy counter mapping, if any */ cntr = mcam->entry2cntr_map[old_entry]; if (cntr != NPC_MCAM_INVALID_MAP) { npc_unmap_mcam_entry_and_cntr(rvu, mcam, blkaddr, old_entry, cntr); npc_map_mcam_entry_and_cntr(rvu, mcam, blkaddr, new_entry, cntr); } /* Enable new_entry and disable old_entry */ npc_enable_mcam_entry(rvu, mcam, blkaddr, new_entry, true); npc_enable_mcam_entry(rvu, mcam, blkaddr, old_entry, false); } /* If shift has failed then report the failed index */ if (index != req->shift_count) { rc = NPC_MCAM_PERM_DENIED; rsp->failed_entry_idx = index; } mutex_unlock(&mcam->lock); return rc; } int rvu_mbox_handler_npc_mcam_alloc_counter(struct rvu *rvu, struct npc_mcam_alloc_counter_req *req, struct npc_mcam_alloc_counter_rsp *rsp) { struct npc_mcam *mcam = &rvu->hw->mcam; u16 pcifunc = req->hdr.pcifunc; u16 max_contig, cntr; int blkaddr, index; blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0); if (blkaddr < 0) return NPC_MCAM_INVALID_REQ; /* If the request is from a PFFUNC with no NIXLF attached, ignore */ if (!is_pffunc_af(pcifunc) && !is_nixlf_attached(rvu, pcifunc)) return NPC_MCAM_INVALID_REQ; /* Since list of allocated counter IDs needs to be sent to requester, * max number of non-contiguous counters per mbox msg is limited. */ if (!req->contig && req->count > NPC_MAX_NONCONTIG_COUNTERS) return NPC_MCAM_INVALID_REQ; mutex_lock(&mcam->lock); /* Check if unused counters are available or not */ if (!rvu_rsrc_free_count(&mcam->counters)) { mutex_unlock(&mcam->lock); return NPC_MCAM_ALLOC_FAILED; } rsp->count = 0; if (req->contig) { /* Allocate requested number of contiguous counters, if * unsuccessful find max contiguous entries available. */ index = npc_mcam_find_zero_area(mcam->counters.bmap, mcam->counters.max, 0, req->count, &max_contig); rsp->count = max_contig; rsp->cntr = index; for (cntr = index; cntr < (index + max_contig); cntr++) { __set_bit(cntr, mcam->counters.bmap); mcam->cntr2pfvf_map[cntr] = pcifunc; } } else { /* Allocate requested number of non-contiguous counters, * if unsuccessful allocate as many as possible. */ for (cntr = 0; cntr < req->count; cntr++) { index = rvu_alloc_rsrc(&mcam->counters); if (index < 0) break; rsp->cntr_list[cntr] = index; rsp->count++; mcam->cntr2pfvf_map[index] = pcifunc; } } mutex_unlock(&mcam->lock); return 0; } int rvu_mbox_handler_npc_mcam_free_counter(struct rvu *rvu, struct npc_mcam_oper_counter_req *req, struct msg_rsp *rsp) { struct npc_mcam *mcam = &rvu->hw->mcam; u16 index, entry = 0; int blkaddr, err; blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0); if (blkaddr < 0) return NPC_MCAM_INVALID_REQ; mutex_lock(&mcam->lock); err = npc_mcam_verify_counter(mcam, req->hdr.pcifunc, req->cntr); if (err) { mutex_unlock(&mcam->lock); return err; } /* Mark counter as free/unused */ mcam->cntr2pfvf_map[req->cntr] = NPC_MCAM_INVALID_MAP; rvu_free_rsrc(&mcam->counters, req->cntr); /* Disable all MCAM entry's stats which are using this counter */ while (entry < mcam->bmap_entries) { if (!mcam->cntr_refcnt[req->cntr]) break; index = find_next_bit(mcam->bmap, mcam->bmap_entries, entry); if (index >= mcam->bmap_entries) break; entry = index + 1; if (mcam->entry2cntr_map[index] != req->cntr) continue; npc_unmap_mcam_entry_and_cntr(rvu, mcam, blkaddr, index, req->cntr); } mutex_unlock(&mcam->lock); return 0; } int rvu_mbox_handler_npc_mcam_unmap_counter(struct rvu *rvu, struct npc_mcam_unmap_counter_req *req, struct msg_rsp *rsp) { struct npc_mcam *mcam = &rvu->hw->mcam; u16 index, entry = 0; int blkaddr, rc; blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0); if (blkaddr < 0) return NPC_MCAM_INVALID_REQ; mutex_lock(&mcam->lock); rc = npc_mcam_verify_counter(mcam, req->hdr.pcifunc, req->cntr); if (rc) goto exit; /* Unmap the MCAM entry and counter */ if (!req->all) { rc = npc_mcam_verify_entry(mcam, req->hdr.pcifunc, req->entry); if (rc) goto exit; npc_unmap_mcam_entry_and_cntr(rvu, mcam, blkaddr, req->entry, req->cntr); goto exit; } /* Disable all MCAM entry's stats which are using this counter */ while (entry < mcam->bmap_entries) { if (!mcam->cntr_refcnt[req->cntr]) break; index = find_next_bit(mcam->bmap, mcam->bmap_entries, entry); if (index >= mcam->bmap_entries) break; entry = index + 1; if (mcam->entry2cntr_map[index] != req->cntr) continue; npc_unmap_mcam_entry_and_cntr(rvu, mcam, blkaddr, index, req->cntr); } exit: mutex_unlock(&mcam->lock); return rc; } int rvu_mbox_handler_npc_mcam_clear_counter(struct rvu *rvu, struct npc_mcam_oper_counter_req *req, struct msg_rsp *rsp) { struct npc_mcam *mcam = &rvu->hw->mcam; int blkaddr, err; blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0); if (blkaddr < 0) return NPC_MCAM_INVALID_REQ; mutex_lock(&mcam->lock); err = npc_mcam_verify_counter(mcam, req->hdr.pcifunc, req->cntr); mutex_unlock(&mcam->lock); if (err) return err; rvu_write64(rvu, blkaddr, NPC_AF_MATCH_STATX(req->cntr), 0x00); return 0; } int rvu_mbox_handler_npc_mcam_counter_stats(struct rvu *rvu, struct npc_mcam_oper_counter_req *req, struct npc_mcam_oper_counter_rsp *rsp) { struct npc_mcam *mcam = &rvu->hw->mcam; int blkaddr, err; blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0); if (blkaddr < 0) return NPC_MCAM_INVALID_REQ; mutex_lock(&mcam->lock); err = npc_mcam_verify_counter(mcam, req->hdr.pcifunc, req->cntr); mutex_unlock(&mcam->lock); if (err) return err; rsp->stat = rvu_read64(rvu, blkaddr, NPC_AF_MATCH_STATX(req->cntr)); rsp->stat &= BIT_ULL(48) - 1; return 0; } int rvu_mbox_handler_npc_mcam_alloc_and_write_entry(struct rvu *rvu, struct npc_mcam_alloc_and_write_entry_req *req, struct npc_mcam_alloc_and_write_entry_rsp *rsp) { struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, req->hdr.pcifunc); struct npc_mcam_alloc_counter_req cntr_req; struct npc_mcam_alloc_counter_rsp cntr_rsp; struct npc_mcam_alloc_entry_req entry_req; struct npc_mcam_alloc_entry_rsp entry_rsp; struct npc_mcam *mcam = &rvu->hw->mcam; u16 entry = NPC_MCAM_ENTRY_INVALID; u16 cntr = NPC_MCAM_ENTRY_INVALID; int blkaddr, rc; u8 nix_intf; blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0); if (blkaddr < 0) return NPC_MCAM_INVALID_REQ; if (!is_npc_interface_valid(rvu, req->intf)) return NPC_MCAM_INVALID_REQ; /* Try to allocate a MCAM entry */ entry_req.hdr.pcifunc = req->hdr.pcifunc; entry_req.contig = true; entry_req.priority = req->priority; entry_req.ref_entry = req->ref_entry; entry_req.count = 1; rc = rvu_mbox_handler_npc_mcam_alloc_entry(rvu, &entry_req, &entry_rsp); if (rc) return rc; if (!entry_rsp.count) return NPC_MCAM_ALLOC_FAILED; entry = entry_rsp.entry; if (!req->alloc_cntr) goto write_entry; /* Now allocate counter */ cntr_req.hdr.pcifunc = req->hdr.pcifunc; cntr_req.contig = true; cntr_req.count = 1; rc = rvu_mbox_handler_npc_mcam_alloc_counter(rvu, &cntr_req, &cntr_rsp); if (rc) { /* Free allocated MCAM entry */ mutex_lock(&mcam->lock); mcam->entry2pfvf_map[entry] = NPC_MCAM_INVALID_MAP; npc_mcam_clear_bit(mcam, entry); mutex_unlock(&mcam->lock); return rc; } cntr = cntr_rsp.cntr; write_entry: mutex_lock(&mcam->lock); if (is_npc_intf_tx(req->intf)) nix_intf = pfvf->nix_tx_intf; else nix_intf = pfvf->nix_rx_intf; npc_config_mcam_entry(rvu, mcam, blkaddr, entry, nix_intf, &req->entry_data, req->enable_entry); if (req->alloc_cntr) npc_map_mcam_entry_and_cntr(rvu, mcam, blkaddr, entry, cntr); mutex_unlock(&mcam->lock); rsp->entry = entry; rsp->cntr = cntr; return 0; } #define GET_KEX_CFG(intf) \ rvu_read64(rvu, BLKADDR_NPC, NPC_AF_INTFX_KEX_CFG(intf)) #define GET_KEX_FLAGS(ld) \ rvu_read64(rvu, BLKADDR_NPC, NPC_AF_KEX_LDATAX_FLAGS_CFG(ld)) #define GET_KEX_LD(intf, lid, lt, ld) \ rvu_read64(rvu, BLKADDR_NPC, \ NPC_AF_INTFX_LIDX_LTX_LDX_CFG(intf, lid, lt, ld)) #define GET_KEX_LDFLAGS(intf, ld, fl) \ rvu_read64(rvu, BLKADDR_NPC, \ NPC_AF_INTFX_LDATAX_FLAGSX_CFG(intf, ld, fl)) int rvu_mbox_handler_npc_get_kex_cfg(struct rvu *rvu, struct msg_req *req, struct npc_get_kex_cfg_rsp *rsp) { int lid, lt, ld, fl; rsp->rx_keyx_cfg = GET_KEX_CFG(NIX_INTF_RX); rsp->tx_keyx_cfg = GET_KEX_CFG(NIX_INTF_TX); for (lid = 0; lid < NPC_MAX_LID; lid++) { for (lt = 0; lt < NPC_MAX_LT; lt++) { for (ld = 0; ld < NPC_MAX_LD; ld++) { rsp->intf_lid_lt_ld[NIX_INTF_RX][lid][lt][ld] = GET_KEX_LD(NIX_INTF_RX, lid, lt, ld); rsp->intf_lid_lt_ld[NIX_INTF_TX][lid][lt][ld] = GET_KEX_LD(NIX_INTF_TX, lid, lt, ld); } } } for (ld = 0; ld < NPC_MAX_LD; ld++) rsp->kex_ld_flags[ld] = GET_KEX_FLAGS(ld); for (ld = 0; ld < NPC_MAX_LD; ld++) { for (fl = 0; fl < NPC_MAX_LFL; fl++) { rsp->intf_ld_flags[NIX_INTF_RX][ld][fl] = GET_KEX_LDFLAGS(NIX_INTF_RX, ld, fl); rsp->intf_ld_flags[NIX_INTF_TX][ld][fl] = GET_KEX_LDFLAGS(NIX_INTF_TX, ld, fl); } } memcpy(rsp->mkex_pfl_name, rvu->mkex_pfl_name, MKEX_NAME_LEN); return 0; } static int npc_set_var_len_offset_pkind(struct rvu *rvu, u16 pcifunc, u64 pkind, u8 var_len_off, u8 var_len_off_mask, u8 shift_dir) { struct npc_kpu_action0 *act0; u8 shift_count = 0; int blkaddr; u64 val; if (!var_len_off_mask) return -EINVAL; if (var_len_off_mask != 0xff) { if (shift_dir) shift_count = __ffs(var_len_off_mask); else shift_count = (8 - __fls(var_len_off_mask)); } blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, pcifunc); if (blkaddr < 0) { dev_err(rvu->dev, "%s: NPC block not implemented\n", __func__); return -EINVAL; } val = rvu_read64(rvu, blkaddr, NPC_AF_PKINDX_ACTION0(pkind)); act0 = (struct npc_kpu_action0 *)&val; act0->var_len_shift = shift_count; act0->var_len_right = shift_dir; act0->var_len_mask = var_len_off_mask; act0->var_len_offset = var_len_off; rvu_write64(rvu, blkaddr, NPC_AF_PKINDX_ACTION0(pkind), val); return 0; } int rvu_npc_set_parse_mode(struct rvu *rvu, u16 pcifunc, u64 mode, u8 dir, u64 pkind, u8 var_len_off, u8 var_len_off_mask, u8 shift_dir) { struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, pcifunc); int blkaddr, nixlf, rc, intf_mode; int pf = rvu_get_pf(pcifunc); u64 rxpkind, txpkind; u8 cgx_id, lmac_id; /* use default pkind to disable edsa/higig */ rxpkind = rvu_npc_get_pkind(rvu, pf); txpkind = NPC_TX_DEF_PKIND; intf_mode = NPC_INTF_MODE_DEF; if (mode & OTX2_PRIV_FLAGS_CUSTOM) { if (pkind == NPC_RX_CUSTOM_PRE_L2_PKIND) { rc = npc_set_var_len_offset_pkind(rvu, pcifunc, pkind, var_len_off, var_len_off_mask, shift_dir); if (rc) return rc; } rxpkind = pkind; txpkind = pkind; } if (dir & PKIND_RX) { /* rx pkind set req valid only for cgx mapped PFs */ if (!is_cgx_config_permitted(rvu, pcifunc)) return 0; rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id); rc = cgx_set_pkind(rvu_cgx_pdata(cgx_id, rvu), lmac_id, rxpkind); if (rc) return rc; } if (dir & PKIND_TX) { /* Tx pkind set request valid if PCIFUNC has NIXLF attached */ rc = nix_get_nixlf(rvu, pcifunc, &nixlf, &blkaddr); if (rc) return rc; rvu_write64(rvu, blkaddr, NIX_AF_LFX_TX_PARSE_CFG(nixlf), txpkind); } pfvf->intf_mode = intf_mode; return 0; } int rvu_mbox_handler_npc_set_pkind(struct rvu *rvu, struct npc_set_pkind *req, struct msg_rsp *rsp) { return rvu_npc_set_parse_mode(rvu, req->hdr.pcifunc, req->mode, req->dir, req->pkind, req->var_len_off, req->var_len_off_mask, req->shift_dir); } int rvu_mbox_handler_npc_read_base_steer_rule(struct rvu *rvu, struct msg_req *req, struct npc_mcam_read_base_rule_rsp *rsp) { struct npc_mcam *mcam = &rvu->hw->mcam; int index, blkaddr, nixlf, rc = 0; u16 pcifunc = req->hdr.pcifunc; struct rvu_pfvf *pfvf; u8 intf, enable; blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0); if (blkaddr < 0) return NPC_MCAM_INVALID_REQ; /* Return the channel number in case of PF */ if (!(pcifunc & RVU_PFVF_FUNC_MASK)) { pfvf = rvu_get_pfvf(rvu, pcifunc); rsp->entry.kw[0] = pfvf->rx_chan_base; rsp->entry.kw_mask[0] = 0xFFFULL; goto out; } /* Find the pkt steering rule installed by PF to this VF */ mutex_lock(&mcam->lock); for (index = 0; index < mcam->bmap_entries; index++) { if (mcam->entry2target_pffunc[index] == pcifunc) goto read_entry; } rc = nix_get_nixlf(rvu, pcifunc, &nixlf, NULL); if (rc < 0) { mutex_unlock(&mcam->lock); goto out; } /* Read the default ucast entry if there is no pkt steering rule */ index = npc_get_nixlf_mcam_index(mcam, pcifunc, nixlf, NIXLF_UCAST_ENTRY); read_entry: /* Read the mcam entry */ npc_read_mcam_entry(rvu, mcam, blkaddr, index, &rsp->entry, &intf, &enable); mutex_unlock(&mcam->lock); out: return rc; } int rvu_mbox_handler_npc_mcam_entry_stats(struct rvu *rvu, struct npc_mcam_get_stats_req *req, struct npc_mcam_get_stats_rsp *rsp) { struct npc_mcam *mcam = &rvu->hw->mcam; u16 index, cntr; int blkaddr; u64 regval; u32 bank; blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NPC, 0); if (blkaddr < 0) return NPC_MCAM_INVALID_REQ; mutex_lock(&mcam->lock); index = req->entry & (mcam->banksize - 1); bank = npc_get_bank(mcam, req->entry); /* read MCAM entry STAT_ACT register */ regval = rvu_read64(rvu, blkaddr, NPC_AF_MCAMEX_BANKX_STAT_ACT(index, bank)); if (!(regval & rvu->hw->npc_stat_ena)) { rsp->stat_ena = 0; mutex_unlock(&mcam->lock); return 0; } cntr = regval & 0x1FF; rsp->stat_ena = 1; rsp->stat = rvu_read64(rvu, blkaddr, NPC_AF_MATCH_STATX(cntr)); rsp->stat &= BIT_ULL(48) - 1; mutex_unlock(&mcam->lock); return 0; }
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