1d9ae7f2bSJakub Kicinski /* 2854dc87dSJiong Wang * Copyright (C) 2016-2017 Netronome Systems, Inc. 3d9ae7f2bSJakub Kicinski * 4d9ae7f2bSJakub Kicinski * This software is dual licensed under the GNU General License Version 2, 5d9ae7f2bSJakub Kicinski * June 1991 as shown in the file COPYING in the top-level directory of this 6d9ae7f2bSJakub Kicinski * source tree or the BSD 2-Clause License provided below. You have the 7d9ae7f2bSJakub Kicinski * option to license this software under the complete terms of either license. 8d9ae7f2bSJakub Kicinski * 9d9ae7f2bSJakub Kicinski * The BSD 2-Clause License: 10d9ae7f2bSJakub Kicinski * 11d9ae7f2bSJakub Kicinski * Redistribution and use in source and binary forms, with or 12d9ae7f2bSJakub Kicinski * without modification, are permitted provided that the following 13d9ae7f2bSJakub Kicinski * conditions are met: 14d9ae7f2bSJakub Kicinski * 15d9ae7f2bSJakub Kicinski * 1. Redistributions of source code must retain the above 16d9ae7f2bSJakub Kicinski * copyright notice, this list of conditions and the following 17d9ae7f2bSJakub Kicinski * disclaimer. 18d9ae7f2bSJakub Kicinski * 19d9ae7f2bSJakub Kicinski * 2. Redistributions in binary form must reproduce the above 20d9ae7f2bSJakub Kicinski * copyright notice, this list of conditions and the following 21d9ae7f2bSJakub Kicinski * disclaimer in the documentation and/or other materials 22d9ae7f2bSJakub Kicinski * provided with the distribution. 23d9ae7f2bSJakub Kicinski * 24d9ae7f2bSJakub Kicinski * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 25d9ae7f2bSJakub Kicinski * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 26d9ae7f2bSJakub Kicinski * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 27d9ae7f2bSJakub Kicinski * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 28d9ae7f2bSJakub Kicinski * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 29d9ae7f2bSJakub Kicinski * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 30d9ae7f2bSJakub Kicinski * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 31d9ae7f2bSJakub Kicinski * SOFTWARE. 32d9ae7f2bSJakub Kicinski */ 33d9ae7f2bSJakub Kicinski 34d9ae7f2bSJakub Kicinski #define pr_fmt(fmt) "NFP net bpf: " fmt 35d9ae7f2bSJakub Kicinski 360d49eaf4SJakub Kicinski #include <linux/bug.h> 37d9ae7f2bSJakub Kicinski #include <linux/kernel.h> 38d9ae7f2bSJakub Kicinski #include <linux/bpf.h> 39d9ae7f2bSJakub Kicinski #include <linux/filter.h> 40d9ae7f2bSJakub Kicinski #include <linux/pkt_cls.h> 41d9ae7f2bSJakub Kicinski #include <linux/unistd.h> 42d9ae7f2bSJakub Kicinski 43d9ae7f2bSJakub Kicinski #include "main.h" 44d9ae7f2bSJakub Kicinski #include "../nfp_asm.h" 45d9ae7f2bSJakub Kicinski 46d9ae7f2bSJakub Kicinski /* --- NFP prog --- */ 47d9ae7f2bSJakub Kicinski /* Foreach "multiple" entries macros provide pos and next<n> pointers. 48d9ae7f2bSJakub Kicinski * It's safe to modify the next pointers (but not pos). 49d9ae7f2bSJakub Kicinski */ 50d9ae7f2bSJakub Kicinski #define nfp_for_each_insn_walk2(nfp_prog, pos, next) \ 51d9ae7f2bSJakub Kicinski for (pos = list_first_entry(&(nfp_prog)->insns, typeof(*pos), l), \ 52d9ae7f2bSJakub Kicinski next = list_next_entry(pos, l); \ 53d9ae7f2bSJakub Kicinski &(nfp_prog)->insns != &pos->l && \ 54d9ae7f2bSJakub Kicinski &(nfp_prog)->insns != &next->l; \ 55d9ae7f2bSJakub Kicinski pos = nfp_meta_next(pos), \ 56d9ae7f2bSJakub Kicinski next = nfp_meta_next(pos)) 57d9ae7f2bSJakub Kicinski 58d9ae7f2bSJakub Kicinski #define nfp_for_each_insn_walk3(nfp_prog, pos, next, next2) \ 59d9ae7f2bSJakub Kicinski for (pos = list_first_entry(&(nfp_prog)->insns, typeof(*pos), l), \ 60d9ae7f2bSJakub Kicinski next = list_next_entry(pos, l), \ 61d9ae7f2bSJakub Kicinski next2 = list_next_entry(next, l); \ 62d9ae7f2bSJakub Kicinski &(nfp_prog)->insns != &pos->l && \ 63d9ae7f2bSJakub Kicinski &(nfp_prog)->insns != &next->l && \ 64d9ae7f2bSJakub Kicinski &(nfp_prog)->insns != &next2->l; \ 65d9ae7f2bSJakub Kicinski pos = nfp_meta_next(pos), \ 66d9ae7f2bSJakub Kicinski next = nfp_meta_next(pos), \ 67d9ae7f2bSJakub Kicinski next2 = nfp_meta_next(next)) 68d9ae7f2bSJakub Kicinski 69d9ae7f2bSJakub Kicinski static bool 70d9ae7f2bSJakub Kicinski nfp_meta_has_prev(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 71d9ae7f2bSJakub Kicinski { 72d9ae7f2bSJakub Kicinski return meta->l.prev != &nfp_prog->insns; 73d9ae7f2bSJakub Kicinski } 74d9ae7f2bSJakub Kicinski 75d9ae7f2bSJakub Kicinski static void nfp_prog_push(struct nfp_prog *nfp_prog, u64 insn) 76d9ae7f2bSJakub Kicinski { 77d9ae7f2bSJakub Kicinski if (nfp_prog->__prog_alloc_len == nfp_prog->prog_len) { 78d9ae7f2bSJakub Kicinski nfp_prog->error = -ENOSPC; 79d9ae7f2bSJakub Kicinski return; 80d9ae7f2bSJakub Kicinski } 81d9ae7f2bSJakub Kicinski 82d9ae7f2bSJakub Kicinski nfp_prog->prog[nfp_prog->prog_len] = insn; 83d9ae7f2bSJakub Kicinski nfp_prog->prog_len++; 84d9ae7f2bSJakub Kicinski } 85d9ae7f2bSJakub Kicinski 86d9ae7f2bSJakub Kicinski static unsigned int nfp_prog_current_offset(struct nfp_prog *nfp_prog) 87d9ae7f2bSJakub Kicinski { 882314fe9eSJakub Kicinski return nfp_prog->prog_len; 89d9ae7f2bSJakub Kicinski } 90d9ae7f2bSJakub Kicinski 910d49eaf4SJakub Kicinski static bool 920d49eaf4SJakub Kicinski nfp_prog_confirm_current_offset(struct nfp_prog *nfp_prog, unsigned int off) 930d49eaf4SJakub Kicinski { 940d49eaf4SJakub Kicinski /* If there is a recorded error we may have dropped instructions; 950d49eaf4SJakub Kicinski * that doesn't have to be due to translator bug, and the translation 960d49eaf4SJakub Kicinski * will fail anyway, so just return OK. 970d49eaf4SJakub Kicinski */ 980d49eaf4SJakub Kicinski if (nfp_prog->error) 990d49eaf4SJakub Kicinski return true; 1000d49eaf4SJakub Kicinski return !WARN_ON_ONCE(nfp_prog_current_offset(nfp_prog) != off); 1010d49eaf4SJakub Kicinski } 1020d49eaf4SJakub Kicinski 103d9ae7f2bSJakub Kicinski /* --- Emitters --- */ 104d9ae7f2bSJakub Kicinski static void 105d9ae7f2bSJakub Kicinski __emit_cmd(struct nfp_prog *nfp_prog, enum cmd_tgt_map op, 1065468a8b9SJakub Kicinski u8 mode, u8 xfer, u8 areg, u8 breg, u8 size, bool sync, bool indir) 107d9ae7f2bSJakub Kicinski { 108d9ae7f2bSJakub Kicinski enum cmd_ctx_swap ctx; 109d9ae7f2bSJakub Kicinski u64 insn; 110d9ae7f2bSJakub Kicinski 111d9ae7f2bSJakub Kicinski if (sync) 112d9ae7f2bSJakub Kicinski ctx = CMD_CTX_SWAP; 113d9ae7f2bSJakub Kicinski else 114d9ae7f2bSJakub Kicinski ctx = CMD_CTX_NO_SWAP; 115d9ae7f2bSJakub Kicinski 116d9ae7f2bSJakub Kicinski insn = FIELD_PREP(OP_CMD_A_SRC, areg) | 117d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_CTX, ctx) | 118d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_B_SRC, breg) | 119d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_TOKEN, cmd_tgt_act[op].token) | 120d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_XFER, xfer) | 121d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_CNT, size) | 122d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_SIG, sync) | 123d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_TGT_CMD, cmd_tgt_act[op].tgt_cmd) | 1245468a8b9SJakub Kicinski FIELD_PREP(OP_CMD_INDIR, indir) | 125d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_MODE, mode); 126d9ae7f2bSJakub Kicinski 127d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 128d9ae7f2bSJakub Kicinski } 129d9ae7f2bSJakub Kicinski 130d9ae7f2bSJakub Kicinski static void 1315468a8b9SJakub Kicinski emit_cmd_any(struct nfp_prog *nfp_prog, enum cmd_tgt_map op, u8 mode, u8 xfer, 1325468a8b9SJakub Kicinski swreg lreg, swreg rreg, u8 size, bool sync, bool indir) 133d9ae7f2bSJakub Kicinski { 134d9ae7f2bSJakub Kicinski struct nfp_insn_re_regs reg; 135d9ae7f2bSJakub Kicinski int err; 136d9ae7f2bSJakub Kicinski 137d9ae7f2bSJakub Kicinski err = swreg_to_restricted(reg_none(), lreg, rreg, ®, false); 138d9ae7f2bSJakub Kicinski if (err) { 139d9ae7f2bSJakub Kicinski nfp_prog->error = err; 140d9ae7f2bSJakub Kicinski return; 141d9ae7f2bSJakub Kicinski } 142d9ae7f2bSJakub Kicinski if (reg.swap) { 143d9ae7f2bSJakub Kicinski pr_err("cmd can't swap arguments\n"); 144d9ae7f2bSJakub Kicinski nfp_prog->error = -EFAULT; 145d9ae7f2bSJakub Kicinski return; 146d9ae7f2bSJakub Kicinski } 147995e101fSJakub Kicinski if (reg.dst_lmextn || reg.src_lmextn) { 148995e101fSJakub Kicinski pr_err("cmd can't use LMextn\n"); 149995e101fSJakub Kicinski nfp_prog->error = -EFAULT; 150995e101fSJakub Kicinski return; 151995e101fSJakub Kicinski } 152d9ae7f2bSJakub Kicinski 1535468a8b9SJakub Kicinski __emit_cmd(nfp_prog, op, mode, xfer, reg.areg, reg.breg, size, sync, 1545468a8b9SJakub Kicinski indir); 1555468a8b9SJakub Kicinski } 1565468a8b9SJakub Kicinski 1575468a8b9SJakub Kicinski static void 1585468a8b9SJakub Kicinski emit_cmd(struct nfp_prog *nfp_prog, enum cmd_tgt_map op, u8 mode, u8 xfer, 1595468a8b9SJakub Kicinski swreg lreg, swreg rreg, u8 size, bool sync) 1605468a8b9SJakub Kicinski { 1615468a8b9SJakub Kicinski emit_cmd_any(nfp_prog, op, mode, xfer, lreg, rreg, size, sync, false); 162d9ae7f2bSJakub Kicinski } 163d9ae7f2bSJakub Kicinski 164d9ae7f2bSJakub Kicinski static void 1659879a381SJiong Wang emit_cmd_indir(struct nfp_prog *nfp_prog, enum cmd_tgt_map op, u8 mode, u8 xfer, 1669879a381SJiong Wang swreg lreg, swreg rreg, u8 size, bool sync) 1679879a381SJiong Wang { 1689879a381SJiong Wang emit_cmd_any(nfp_prog, op, mode, xfer, lreg, rreg, size, sync, true); 1699879a381SJiong Wang } 1709879a381SJiong Wang 1719879a381SJiong Wang static void 172d9ae7f2bSJakub Kicinski __emit_br(struct nfp_prog *nfp_prog, enum br_mask mask, enum br_ev_pip ev_pip, 173d9ae7f2bSJakub Kicinski enum br_ctx_signal_state css, u16 addr, u8 defer) 174d9ae7f2bSJakub Kicinski { 175d9ae7f2bSJakub Kicinski u16 addr_lo, addr_hi; 176d9ae7f2bSJakub Kicinski u64 insn; 177d9ae7f2bSJakub Kicinski 178d9ae7f2bSJakub Kicinski addr_lo = addr & (OP_BR_ADDR_LO >> __bf_shf(OP_BR_ADDR_LO)); 179d9ae7f2bSJakub Kicinski addr_hi = addr != addr_lo; 180d9ae7f2bSJakub Kicinski 181d9ae7f2bSJakub Kicinski insn = OP_BR_BASE | 182d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_MASK, mask) | 183d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_EV_PIP, ev_pip) | 184d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_CSS, css) | 185d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_DEFBR, defer) | 186d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_ADDR_LO, addr_lo) | 187d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_ADDR_HI, addr_hi); 188d9ae7f2bSJakub Kicinski 189d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 190d9ae7f2bSJakub Kicinski } 191d9ae7f2bSJakub Kicinski 1922314fe9eSJakub Kicinski static void 1932314fe9eSJakub Kicinski emit_br_relo(struct nfp_prog *nfp_prog, enum br_mask mask, u16 addr, u8 defer, 1942314fe9eSJakub Kicinski enum nfp_relo_type relo) 195d9ae7f2bSJakub Kicinski { 1962314fe9eSJakub Kicinski if (mask == BR_UNC && defer > 2) { 197d9ae7f2bSJakub Kicinski pr_err("BUG: branch defer out of bounds %d\n", defer); 198d9ae7f2bSJakub Kicinski nfp_prog->error = -EFAULT; 199d9ae7f2bSJakub Kicinski return; 200d9ae7f2bSJakub Kicinski } 2012314fe9eSJakub Kicinski 2022314fe9eSJakub Kicinski __emit_br(nfp_prog, mask, 2032314fe9eSJakub Kicinski mask != BR_UNC ? BR_EV_PIP_COND : BR_EV_PIP_UNCOND, 2042314fe9eSJakub Kicinski BR_CSS_NONE, addr, defer); 2052314fe9eSJakub Kicinski 2062314fe9eSJakub Kicinski nfp_prog->prog[nfp_prog->prog_len - 1] |= 2072314fe9eSJakub Kicinski FIELD_PREP(OP_RELO_TYPE, relo); 208d9ae7f2bSJakub Kicinski } 209d9ae7f2bSJakub Kicinski 210d9ae7f2bSJakub Kicinski static void 211d9ae7f2bSJakub Kicinski emit_br(struct nfp_prog *nfp_prog, enum br_mask mask, u16 addr, u8 defer) 212d9ae7f2bSJakub Kicinski { 2132314fe9eSJakub Kicinski emit_br_relo(nfp_prog, mask, addr, defer, RELO_BR_REL); 214d9ae7f2bSJakub Kicinski } 215d9ae7f2bSJakub Kicinski 216d9ae7f2bSJakub Kicinski static void 217d9ae7f2bSJakub Kicinski __emit_immed(struct nfp_prog *nfp_prog, u16 areg, u16 breg, u16 imm_hi, 218d9ae7f2bSJakub Kicinski enum immed_width width, bool invert, 219995e101fSJakub Kicinski enum immed_shift shift, bool wr_both, 220995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 221d9ae7f2bSJakub Kicinski { 222d9ae7f2bSJakub Kicinski u64 insn; 223d9ae7f2bSJakub Kicinski 224d9ae7f2bSJakub Kicinski insn = OP_IMMED_BASE | 225d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_A_SRC, areg) | 226d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_B_SRC, breg) | 227d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_IMM, imm_hi) | 228d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_WIDTH, width) | 229d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_INV, invert) | 230d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_SHIFT, shift) | 231995e101fSJakub Kicinski FIELD_PREP(OP_IMMED_WR_AB, wr_both) | 232995e101fSJakub Kicinski FIELD_PREP(OP_IMMED_SRC_LMEXTN, src_lmextn) | 233995e101fSJakub Kicinski FIELD_PREP(OP_IMMED_DST_LMEXTN, dst_lmextn); 234d9ae7f2bSJakub Kicinski 235d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 236d9ae7f2bSJakub Kicinski } 237d9ae7f2bSJakub Kicinski 238d9ae7f2bSJakub Kicinski static void 239b3f868dfSJakub Kicinski emit_immed(struct nfp_prog *nfp_prog, swreg dst, u16 imm, 240d9ae7f2bSJakub Kicinski enum immed_width width, bool invert, enum immed_shift shift) 241d9ae7f2bSJakub Kicinski { 242d9ae7f2bSJakub Kicinski struct nfp_insn_ur_regs reg; 243d9ae7f2bSJakub Kicinski int err; 244d9ae7f2bSJakub Kicinski 245b3f868dfSJakub Kicinski if (swreg_type(dst) == NN_REG_IMM) { 246d9ae7f2bSJakub Kicinski nfp_prog->error = -EFAULT; 247d9ae7f2bSJakub Kicinski return; 248d9ae7f2bSJakub Kicinski } 249d9ae7f2bSJakub Kicinski 250d9ae7f2bSJakub Kicinski err = swreg_to_unrestricted(dst, dst, reg_imm(imm & 0xff), ®); 251d9ae7f2bSJakub Kicinski if (err) { 252d9ae7f2bSJakub Kicinski nfp_prog->error = err; 253d9ae7f2bSJakub Kicinski return; 254d9ae7f2bSJakub Kicinski } 255d9ae7f2bSJakub Kicinski 2563239e7bbSJiong Wang /* Use reg.dst when destination is No-Dest. */ 2573239e7bbSJiong Wang __emit_immed(nfp_prog, 2583239e7bbSJiong Wang swreg_type(dst) == NN_REG_NONE ? reg.dst : reg.areg, 2593239e7bbSJiong Wang reg.breg, imm >> 8, width, invert, shift, 2603239e7bbSJiong Wang reg.wr_both, reg.dst_lmextn, reg.src_lmextn); 261d9ae7f2bSJakub Kicinski } 262d9ae7f2bSJakub Kicinski 263d9ae7f2bSJakub Kicinski static void 264d9ae7f2bSJakub Kicinski __emit_shf(struct nfp_prog *nfp_prog, u16 dst, enum alu_dst_ab dst_ab, 265d9ae7f2bSJakub Kicinski enum shf_sc sc, u8 shift, 266995e101fSJakub Kicinski u16 areg, enum shf_op op, u16 breg, bool i8, bool sw, bool wr_both, 267995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 268d9ae7f2bSJakub Kicinski { 269d9ae7f2bSJakub Kicinski u64 insn; 270d9ae7f2bSJakub Kicinski 271d9ae7f2bSJakub Kicinski if (!FIELD_FIT(OP_SHF_SHIFT, shift)) { 272d9ae7f2bSJakub Kicinski nfp_prog->error = -EFAULT; 273d9ae7f2bSJakub Kicinski return; 274d9ae7f2bSJakub Kicinski } 275d9ae7f2bSJakub Kicinski 276d9ae7f2bSJakub Kicinski if (sc == SHF_SC_L_SHF) 277d9ae7f2bSJakub Kicinski shift = 32 - shift; 278d9ae7f2bSJakub Kicinski 279d9ae7f2bSJakub Kicinski insn = OP_SHF_BASE | 280d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_A_SRC, areg) | 281d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_SC, sc) | 282d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_B_SRC, breg) | 283d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_I8, i8) | 284d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_SW, sw) | 285d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_DST, dst) | 286d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_SHIFT, shift) | 287d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_OP, op) | 288d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_DST_AB, dst_ab) | 289995e101fSJakub Kicinski FIELD_PREP(OP_SHF_WR_AB, wr_both) | 290995e101fSJakub Kicinski FIELD_PREP(OP_SHF_SRC_LMEXTN, src_lmextn) | 291995e101fSJakub Kicinski FIELD_PREP(OP_SHF_DST_LMEXTN, dst_lmextn); 292d9ae7f2bSJakub Kicinski 293d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 294d9ae7f2bSJakub Kicinski } 295d9ae7f2bSJakub Kicinski 296d9ae7f2bSJakub Kicinski static void 297b3f868dfSJakub Kicinski emit_shf(struct nfp_prog *nfp_prog, swreg dst, 298b3f868dfSJakub Kicinski swreg lreg, enum shf_op op, swreg rreg, enum shf_sc sc, u8 shift) 299d9ae7f2bSJakub Kicinski { 300d9ae7f2bSJakub Kicinski struct nfp_insn_re_regs reg; 301d9ae7f2bSJakub Kicinski int err; 302d9ae7f2bSJakub Kicinski 303d9ae7f2bSJakub Kicinski err = swreg_to_restricted(dst, lreg, rreg, ®, true); 304d9ae7f2bSJakub Kicinski if (err) { 305d9ae7f2bSJakub Kicinski nfp_prog->error = err; 306d9ae7f2bSJakub Kicinski return; 307d9ae7f2bSJakub Kicinski } 308d9ae7f2bSJakub Kicinski 309d9ae7f2bSJakub Kicinski __emit_shf(nfp_prog, reg.dst, reg.dst_ab, sc, shift, 310995e101fSJakub Kicinski reg.areg, op, reg.breg, reg.i8, reg.swap, reg.wr_both, 311995e101fSJakub Kicinski reg.dst_lmextn, reg.src_lmextn); 312d9ae7f2bSJakub Kicinski } 313d9ae7f2bSJakub Kicinski 314d9ae7f2bSJakub Kicinski static void 315d9ae7f2bSJakub Kicinski __emit_alu(struct nfp_prog *nfp_prog, u16 dst, enum alu_dst_ab dst_ab, 316995e101fSJakub Kicinski u16 areg, enum alu_op op, u16 breg, bool swap, bool wr_both, 317995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 318d9ae7f2bSJakub Kicinski { 319d9ae7f2bSJakub Kicinski u64 insn; 320d9ae7f2bSJakub Kicinski 321d9ae7f2bSJakub Kicinski insn = OP_ALU_BASE | 322d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_A_SRC, areg) | 323d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_B_SRC, breg) | 324d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_DST, dst) | 325d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_SW, swap) | 326d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_OP, op) | 327d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_DST_AB, dst_ab) | 328995e101fSJakub Kicinski FIELD_PREP(OP_ALU_WR_AB, wr_both) | 329995e101fSJakub Kicinski FIELD_PREP(OP_ALU_SRC_LMEXTN, src_lmextn) | 330995e101fSJakub Kicinski FIELD_PREP(OP_ALU_DST_LMEXTN, dst_lmextn); 331d9ae7f2bSJakub Kicinski 332d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 333d9ae7f2bSJakub Kicinski } 334d9ae7f2bSJakub Kicinski 335d9ae7f2bSJakub Kicinski static void 336b3f868dfSJakub Kicinski emit_alu(struct nfp_prog *nfp_prog, swreg dst, 337b3f868dfSJakub Kicinski swreg lreg, enum alu_op op, swreg rreg) 338d9ae7f2bSJakub Kicinski { 339d9ae7f2bSJakub Kicinski struct nfp_insn_ur_regs reg; 340d9ae7f2bSJakub Kicinski int err; 341d9ae7f2bSJakub Kicinski 342d9ae7f2bSJakub Kicinski err = swreg_to_unrestricted(dst, lreg, rreg, ®); 343d9ae7f2bSJakub Kicinski if (err) { 344d9ae7f2bSJakub Kicinski nfp_prog->error = err; 345d9ae7f2bSJakub Kicinski return; 346d9ae7f2bSJakub Kicinski } 347d9ae7f2bSJakub Kicinski 348d9ae7f2bSJakub Kicinski __emit_alu(nfp_prog, reg.dst, reg.dst_ab, 349995e101fSJakub Kicinski reg.areg, op, reg.breg, reg.swap, reg.wr_both, 350995e101fSJakub Kicinski reg.dst_lmextn, reg.src_lmextn); 351d9ae7f2bSJakub Kicinski } 352d9ae7f2bSJakub Kicinski 353d9ae7f2bSJakub Kicinski static void 354d9ae7f2bSJakub Kicinski __emit_ld_field(struct nfp_prog *nfp_prog, enum shf_sc sc, 355d9ae7f2bSJakub Kicinski u8 areg, u8 bmask, u8 breg, u8 shift, bool imm8, 356995e101fSJakub Kicinski bool zero, bool swap, bool wr_both, 357995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 358d9ae7f2bSJakub Kicinski { 359d9ae7f2bSJakub Kicinski u64 insn; 360d9ae7f2bSJakub Kicinski 361d9ae7f2bSJakub Kicinski insn = OP_LDF_BASE | 362d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_A_SRC, areg) | 363d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_SC, sc) | 364d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_B_SRC, breg) | 365d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_I8, imm8) | 366d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_SW, swap) | 367d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_ZF, zero) | 368d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_BMASK, bmask) | 369d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_SHF, shift) | 370995e101fSJakub Kicinski FIELD_PREP(OP_LDF_WR_AB, wr_both) | 371995e101fSJakub Kicinski FIELD_PREP(OP_LDF_SRC_LMEXTN, src_lmextn) | 372995e101fSJakub Kicinski FIELD_PREP(OP_LDF_DST_LMEXTN, dst_lmextn); 373d9ae7f2bSJakub Kicinski 374d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 375d9ae7f2bSJakub Kicinski } 376d9ae7f2bSJakub Kicinski 377d9ae7f2bSJakub Kicinski static void 378bc8c80a8SJakub Kicinski emit_ld_field_any(struct nfp_prog *nfp_prog, swreg dst, u8 bmask, swreg src, 379bc8c80a8SJakub Kicinski enum shf_sc sc, u8 shift, bool zero) 380d9ae7f2bSJakub Kicinski { 381d9ae7f2bSJakub Kicinski struct nfp_insn_re_regs reg; 382d9ae7f2bSJakub Kicinski int err; 383d9ae7f2bSJakub Kicinski 3842de1be1dSJakub Kicinski /* Note: ld_field is special as it uses one of the src regs as dst */ 3852de1be1dSJakub Kicinski err = swreg_to_restricted(dst, dst, src, ®, true); 386d9ae7f2bSJakub Kicinski if (err) { 387d9ae7f2bSJakub Kicinski nfp_prog->error = err; 388d9ae7f2bSJakub Kicinski return; 389d9ae7f2bSJakub Kicinski } 390d9ae7f2bSJakub Kicinski 391d9ae7f2bSJakub Kicinski __emit_ld_field(nfp_prog, sc, reg.areg, bmask, reg.breg, shift, 392995e101fSJakub Kicinski reg.i8, zero, reg.swap, reg.wr_both, 393995e101fSJakub Kicinski reg.dst_lmextn, reg.src_lmextn); 394d9ae7f2bSJakub Kicinski } 395d9ae7f2bSJakub Kicinski 396d9ae7f2bSJakub Kicinski static void 397b3f868dfSJakub Kicinski emit_ld_field(struct nfp_prog *nfp_prog, swreg dst, u8 bmask, swreg src, 398d9ae7f2bSJakub Kicinski enum shf_sc sc, u8 shift) 399d9ae7f2bSJakub Kicinski { 400bc8c80a8SJakub Kicinski emit_ld_field_any(nfp_prog, dst, bmask, src, sc, shift, false); 401d9ae7f2bSJakub Kicinski } 402d9ae7f2bSJakub Kicinski 4032df03a50SJakub Kicinski static void 4042df03a50SJakub Kicinski __emit_lcsr(struct nfp_prog *nfp_prog, u16 areg, u16 breg, bool wr, u16 addr, 4052df03a50SJakub Kicinski bool dst_lmextn, bool src_lmextn) 4062df03a50SJakub Kicinski { 4072df03a50SJakub Kicinski u64 insn; 4082df03a50SJakub Kicinski 4092df03a50SJakub Kicinski insn = OP_LCSR_BASE | 4102df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_A_SRC, areg) | 4112df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_B_SRC, breg) | 4122df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_WRITE, wr) | 4132df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_ADDR, addr) | 4142df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_SRC_LMEXTN, src_lmextn) | 4152df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_DST_LMEXTN, dst_lmextn); 4162df03a50SJakub Kicinski 4172df03a50SJakub Kicinski nfp_prog_push(nfp_prog, insn); 4182df03a50SJakub Kicinski } 4192df03a50SJakub Kicinski 4202df03a50SJakub Kicinski static void emit_csr_wr(struct nfp_prog *nfp_prog, swreg src, u16 addr) 4212df03a50SJakub Kicinski { 4222df03a50SJakub Kicinski struct nfp_insn_ur_regs reg; 4232df03a50SJakub Kicinski int err; 4242df03a50SJakub Kicinski 4252df03a50SJakub Kicinski /* This instruction takes immeds instead of reg_none() for the ignored 4262df03a50SJakub Kicinski * operand, but we can't encode 2 immeds in one instr with our normal 4272df03a50SJakub Kicinski * swreg infra so if param is an immed, we encode as reg_none() and 4282df03a50SJakub Kicinski * copy the immed to both operands. 4292df03a50SJakub Kicinski */ 4302df03a50SJakub Kicinski if (swreg_type(src) == NN_REG_IMM) { 4312df03a50SJakub Kicinski err = swreg_to_unrestricted(reg_none(), src, reg_none(), ®); 4322df03a50SJakub Kicinski reg.breg = reg.areg; 4332df03a50SJakub Kicinski } else { 4342df03a50SJakub Kicinski err = swreg_to_unrestricted(reg_none(), src, reg_imm(0), ®); 4352df03a50SJakub Kicinski } 4362df03a50SJakub Kicinski if (err) { 4372df03a50SJakub Kicinski nfp_prog->error = err; 4382df03a50SJakub Kicinski return; 4392df03a50SJakub Kicinski } 4402df03a50SJakub Kicinski 4412df03a50SJakub Kicinski __emit_lcsr(nfp_prog, reg.areg, reg.breg, true, addr / 4, 4422df03a50SJakub Kicinski false, reg.src_lmextn); 4432df03a50SJakub Kicinski } 4442df03a50SJakub Kicinski 4451c03e03fSJakub Kicinski static void emit_nop(struct nfp_prog *nfp_prog) 4461c03e03fSJakub Kicinski { 4471c03e03fSJakub Kicinski __emit_immed(nfp_prog, UR_REG_IMM, UR_REG_IMM, 0, 0, 0, 0, 0, 0, 0); 4481c03e03fSJakub Kicinski } 4491c03e03fSJakub Kicinski 450d9ae7f2bSJakub Kicinski /* --- Wrappers --- */ 451d9ae7f2bSJakub Kicinski static bool pack_immed(u32 imm, u16 *val, enum immed_shift *shift) 452d9ae7f2bSJakub Kicinski { 453d9ae7f2bSJakub Kicinski if (!(imm & 0xffff0000)) { 454d9ae7f2bSJakub Kicinski *val = imm; 455d9ae7f2bSJakub Kicinski *shift = IMMED_SHIFT_0B; 456d9ae7f2bSJakub Kicinski } else if (!(imm & 0xff0000ff)) { 457d9ae7f2bSJakub Kicinski *val = imm >> 8; 458d9ae7f2bSJakub Kicinski *shift = IMMED_SHIFT_1B; 459d9ae7f2bSJakub Kicinski } else if (!(imm & 0x0000ffff)) { 460d9ae7f2bSJakub Kicinski *val = imm >> 16; 461d9ae7f2bSJakub Kicinski *shift = IMMED_SHIFT_2B; 462d9ae7f2bSJakub Kicinski } else { 463d9ae7f2bSJakub Kicinski return false; 464d9ae7f2bSJakub Kicinski } 465d9ae7f2bSJakub Kicinski 466d9ae7f2bSJakub Kicinski return true; 467d9ae7f2bSJakub Kicinski } 468d9ae7f2bSJakub Kicinski 469b3f868dfSJakub Kicinski static void wrp_immed(struct nfp_prog *nfp_prog, swreg dst, u32 imm) 470d9ae7f2bSJakub Kicinski { 471d9ae7f2bSJakub Kicinski enum immed_shift shift; 472d9ae7f2bSJakub Kicinski u16 val; 473d9ae7f2bSJakub Kicinski 474d9ae7f2bSJakub Kicinski if (pack_immed(imm, &val, &shift)) { 475d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, val, IMMED_WIDTH_ALL, false, shift); 476d9ae7f2bSJakub Kicinski } else if (pack_immed(~imm, &val, &shift)) { 477d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, val, IMMED_WIDTH_ALL, true, shift); 478d9ae7f2bSJakub Kicinski } else { 479d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, imm & 0xffff, IMMED_WIDTH_ALL, 480d9ae7f2bSJakub Kicinski false, IMMED_SHIFT_0B); 481d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, imm >> 16, IMMED_WIDTH_WORD, 482d9ae7f2bSJakub Kicinski false, IMMED_SHIFT_2B); 483d9ae7f2bSJakub Kicinski } 484d9ae7f2bSJakub Kicinski } 485d9ae7f2bSJakub Kicinski 48677a3d311SJakub Kicinski static void 48777a3d311SJakub Kicinski wrp_immed_relo(struct nfp_prog *nfp_prog, swreg dst, u32 imm, 48877a3d311SJakub Kicinski enum nfp_relo_type relo) 48977a3d311SJakub Kicinski { 49077a3d311SJakub Kicinski if (imm > 0xffff) { 49177a3d311SJakub Kicinski pr_err("relocation of a large immediate!\n"); 49277a3d311SJakub Kicinski nfp_prog->error = -EFAULT; 49377a3d311SJakub Kicinski return; 49477a3d311SJakub Kicinski } 49577a3d311SJakub Kicinski emit_immed(nfp_prog, dst, imm, IMMED_WIDTH_ALL, false, IMMED_SHIFT_0B); 49677a3d311SJakub Kicinski 49777a3d311SJakub Kicinski nfp_prog->prog[nfp_prog->prog_len - 1] |= 49877a3d311SJakub Kicinski FIELD_PREP(OP_RELO_TYPE, relo); 49977a3d311SJakub Kicinski } 50077a3d311SJakub Kicinski 501d9ae7f2bSJakub Kicinski /* ur_load_imm_any() - encode immediate or use tmp register (unrestricted) 502d9ae7f2bSJakub Kicinski * If the @imm is small enough encode it directly in operand and return 503d9ae7f2bSJakub Kicinski * otherwise load @imm to a spare register and return its encoding. 504d9ae7f2bSJakub Kicinski */ 505b3f868dfSJakub Kicinski static swreg ur_load_imm_any(struct nfp_prog *nfp_prog, u32 imm, swreg tmp_reg) 506d9ae7f2bSJakub Kicinski { 507d9ae7f2bSJakub Kicinski if (FIELD_FIT(UR_REG_IMM_MAX, imm)) 508d9ae7f2bSJakub Kicinski return reg_imm(imm); 509d9ae7f2bSJakub Kicinski 510d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, tmp_reg, imm); 511d9ae7f2bSJakub Kicinski return tmp_reg; 512d9ae7f2bSJakub Kicinski } 513d9ae7f2bSJakub Kicinski 514d9ae7f2bSJakub Kicinski /* re_load_imm_any() - encode immediate or use tmp register (restricted) 515d9ae7f2bSJakub Kicinski * If the @imm is small enough encode it directly in operand and return 516d9ae7f2bSJakub Kicinski * otherwise load @imm to a spare register and return its encoding. 517d9ae7f2bSJakub Kicinski */ 518b3f868dfSJakub Kicinski static swreg re_load_imm_any(struct nfp_prog *nfp_prog, u32 imm, swreg tmp_reg) 519d9ae7f2bSJakub Kicinski { 520d9ae7f2bSJakub Kicinski if (FIELD_FIT(RE_REG_IMM_MAX, imm)) 521d9ae7f2bSJakub Kicinski return reg_imm(imm); 522d9ae7f2bSJakub Kicinski 523d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, tmp_reg, imm); 524d9ae7f2bSJakub Kicinski return tmp_reg; 525d9ae7f2bSJakub Kicinski } 526d9ae7f2bSJakub Kicinski 527ff42bb9fSJakub Kicinski static void wrp_nops(struct nfp_prog *nfp_prog, unsigned int count) 528ff42bb9fSJakub Kicinski { 529ff42bb9fSJakub Kicinski while (count--) 530ff42bb9fSJakub Kicinski emit_nop(nfp_prog); 531ff42bb9fSJakub Kicinski } 532ff42bb9fSJakub Kicinski 533c000dfb5SJakub Kicinski static void wrp_mov(struct nfp_prog *nfp_prog, swreg dst, swreg src) 534c000dfb5SJakub Kicinski { 535c000dfb5SJakub Kicinski emit_alu(nfp_prog, dst, reg_none(), ALU_OP_NONE, src); 536c000dfb5SJakub Kicinski } 537c000dfb5SJakub Kicinski 538d9ae7f2bSJakub Kicinski static void wrp_reg_mov(struct nfp_prog *nfp_prog, u16 dst, u16 src) 539d9ae7f2bSJakub Kicinski { 540c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_both(dst), reg_b(src)); 541d9ae7f2bSJakub Kicinski } 542d9ae7f2bSJakub Kicinski 5439879a381SJiong Wang /* wrp_reg_subpart() - load @field_len bytes from @offset of @src, write the 5449879a381SJiong Wang * result to @dst from low end. 5459879a381SJiong Wang */ 5469879a381SJiong Wang static void 5479879a381SJiong Wang wrp_reg_subpart(struct nfp_prog *nfp_prog, swreg dst, swreg src, u8 field_len, 5489879a381SJiong Wang u8 offset) 5499879a381SJiong Wang { 5509879a381SJiong Wang enum shf_sc sc = offset ? SHF_SC_R_SHF : SHF_SC_NONE; 5519879a381SJiong Wang u8 mask = (1 << field_len) - 1; 5529879a381SJiong Wang 5539879a381SJiong Wang emit_ld_field_any(nfp_prog, dst, mask, src, sc, offset * 8, true); 5549879a381SJiong Wang } 5559879a381SJiong Wang 55691ff69e8SJiong Wang /* wrp_reg_or_subpart() - load @field_len bytes from low end of @src, or the 55791ff69e8SJiong Wang * result to @dst from offset, there is no change on the other bits of @dst. 55891ff69e8SJiong Wang */ 55991ff69e8SJiong Wang static void 56091ff69e8SJiong Wang wrp_reg_or_subpart(struct nfp_prog *nfp_prog, swreg dst, swreg src, 56191ff69e8SJiong Wang u8 field_len, u8 offset) 56291ff69e8SJiong Wang { 56391ff69e8SJiong Wang enum shf_sc sc = offset ? SHF_SC_L_SHF : SHF_SC_NONE; 56491ff69e8SJiong Wang u8 mask = ((1 << field_len) - 1) << offset; 56591ff69e8SJiong Wang 56691ff69e8SJiong Wang emit_ld_field(nfp_prog, dst, mask, src, sc, 32 - offset * 8); 56791ff69e8SJiong Wang } 56891ff69e8SJiong Wang 5693dd43c33SJakub Kicinski static void 5703dd43c33SJakub Kicinski addr40_offset(struct nfp_prog *nfp_prog, u8 src_gpr, swreg offset, 5713dd43c33SJakub Kicinski swreg *rega, swreg *regb) 5723dd43c33SJakub Kicinski { 5733dd43c33SJakub Kicinski if (offset == reg_imm(0)) { 5743dd43c33SJakub Kicinski *rega = reg_a(src_gpr); 5753dd43c33SJakub Kicinski *regb = reg_b(src_gpr + 1); 5763dd43c33SJakub Kicinski return; 5773dd43c33SJakub Kicinski } 5783dd43c33SJakub Kicinski 5793dd43c33SJakub Kicinski emit_alu(nfp_prog, imm_a(nfp_prog), reg_a(src_gpr), ALU_OP_ADD, offset); 5803dd43c33SJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), reg_b(src_gpr + 1), ALU_OP_ADD_C, 5813dd43c33SJakub Kicinski reg_imm(0)); 5823dd43c33SJakub Kicinski *rega = imm_a(nfp_prog); 5833dd43c33SJakub Kicinski *regb = imm_b(nfp_prog); 5843dd43c33SJakub Kicinski } 5853dd43c33SJakub Kicinski 5869879a381SJiong Wang /* NFP has Command Push Pull bus which supports bluk memory operations. */ 5879879a381SJiong Wang static int nfp_cpp_memcpy(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 5889879a381SJiong Wang { 5899879a381SJiong Wang bool descending_seq = meta->ldst_gather_len < 0; 5909879a381SJiong Wang s16 len = abs(meta->ldst_gather_len); 5919879a381SJiong Wang swreg src_base, off; 5923dd43c33SJakub Kicinski bool src_40bit_addr; 5939879a381SJiong Wang unsigned int i; 5949879a381SJiong Wang u8 xfer_num; 5959879a381SJiong Wang 5969879a381SJiong Wang off = re_load_imm_any(nfp_prog, meta->insn.off, imm_b(nfp_prog)); 5973dd43c33SJakub Kicinski src_40bit_addr = meta->ptr.type == PTR_TO_MAP_VALUE; 5989879a381SJiong Wang src_base = reg_a(meta->insn.src_reg * 2); 5999879a381SJiong Wang xfer_num = round_up(len, 4) / 4; 6009879a381SJiong Wang 6013dd43c33SJakub Kicinski if (src_40bit_addr) 6023dd43c33SJakub Kicinski addr40_offset(nfp_prog, meta->insn.src_reg, off, &src_base, 6033dd43c33SJakub Kicinski &off); 6043dd43c33SJakub Kicinski 6058c900538SJiong Wang /* Setup PREV_ALU fields to override memory read length. */ 6068c900538SJiong Wang if (len > 32) 6078c900538SJiong Wang wrp_immed(nfp_prog, reg_none(), 6088c900538SJiong Wang CMD_OVE_LEN | FIELD_PREP(CMD_OV_LEN, xfer_num - 1)); 6098c900538SJiong Wang 6109879a381SJiong Wang /* Memory read from source addr into transfer-in registers. */ 6113dd43c33SJakub Kicinski emit_cmd_any(nfp_prog, CMD_TGT_READ32_SWAP, 6123dd43c33SJakub Kicinski src_40bit_addr ? CMD_MODE_40b_BA : CMD_MODE_32b, 0, 6133dd43c33SJakub Kicinski src_base, off, xfer_num - 1, true, len > 32); 6149879a381SJiong Wang 6159879a381SJiong Wang /* Move from transfer-in to transfer-out. */ 6169879a381SJiong Wang for (i = 0; i < xfer_num; i++) 6179879a381SJiong Wang wrp_mov(nfp_prog, reg_xfer(i), reg_xfer(i)); 6189879a381SJiong Wang 6199879a381SJiong Wang off = re_load_imm_any(nfp_prog, meta->paired_st->off, imm_b(nfp_prog)); 6209879a381SJiong Wang 6219879a381SJiong Wang if (len <= 8) { 6229879a381SJiong Wang /* Use single direct_ref write8. */ 6239879a381SJiong Wang emit_cmd(nfp_prog, CMD_TGT_WRITE8_SWAP, CMD_MODE_32b, 0, 6249879a381SJiong Wang reg_a(meta->paired_st->dst_reg * 2), off, len - 1, 6259879a381SJiong Wang true); 6268c900538SJiong Wang } else if (len <= 32 && IS_ALIGNED(len, 4)) { 6279879a381SJiong Wang /* Use single direct_ref write32. */ 6289879a381SJiong Wang emit_cmd(nfp_prog, CMD_TGT_WRITE32_SWAP, CMD_MODE_32b, 0, 6299879a381SJiong Wang reg_a(meta->paired_st->dst_reg * 2), off, xfer_num - 1, 6309879a381SJiong Wang true); 6318c900538SJiong Wang } else if (len <= 32) { 6329879a381SJiong Wang /* Use single indirect_ref write8. */ 6339879a381SJiong Wang wrp_immed(nfp_prog, reg_none(), 6349879a381SJiong Wang CMD_OVE_LEN | FIELD_PREP(CMD_OV_LEN, len - 1)); 6359879a381SJiong Wang emit_cmd_indir(nfp_prog, CMD_TGT_WRITE8_SWAP, CMD_MODE_32b, 0, 6369879a381SJiong Wang reg_a(meta->paired_st->dst_reg * 2), off, 6379879a381SJiong Wang len - 1, true); 6388c900538SJiong Wang } else if (IS_ALIGNED(len, 4)) { 6398c900538SJiong Wang /* Use single indirect_ref write32. */ 6408c900538SJiong Wang wrp_immed(nfp_prog, reg_none(), 6418c900538SJiong Wang CMD_OVE_LEN | FIELD_PREP(CMD_OV_LEN, xfer_num - 1)); 6428c900538SJiong Wang emit_cmd_indir(nfp_prog, CMD_TGT_WRITE32_SWAP, CMD_MODE_32b, 0, 6438c900538SJiong Wang reg_a(meta->paired_st->dst_reg * 2), off, 6448c900538SJiong Wang xfer_num - 1, true); 6458c900538SJiong Wang } else if (len <= 40) { 6468c900538SJiong Wang /* Use one direct_ref write32 to write the first 32-bytes, then 6478c900538SJiong Wang * another direct_ref write8 to write the remaining bytes. 6488c900538SJiong Wang */ 6498c900538SJiong Wang emit_cmd(nfp_prog, CMD_TGT_WRITE32_SWAP, CMD_MODE_32b, 0, 6508c900538SJiong Wang reg_a(meta->paired_st->dst_reg * 2), off, 7, 6518c900538SJiong Wang true); 6528c900538SJiong Wang 6538c900538SJiong Wang off = re_load_imm_any(nfp_prog, meta->paired_st->off + 32, 6548c900538SJiong Wang imm_b(nfp_prog)); 6558c900538SJiong Wang emit_cmd(nfp_prog, CMD_TGT_WRITE8_SWAP, CMD_MODE_32b, 8, 6568c900538SJiong Wang reg_a(meta->paired_st->dst_reg * 2), off, len - 33, 6578c900538SJiong Wang true); 6588c900538SJiong Wang } else { 6598c900538SJiong Wang /* Use one indirect_ref write32 to write 4-bytes aligned length, 6608c900538SJiong Wang * then another direct_ref write8 to write the remaining bytes. 6618c900538SJiong Wang */ 6628c900538SJiong Wang u8 new_off; 6638c900538SJiong Wang 6648c900538SJiong Wang wrp_immed(nfp_prog, reg_none(), 6658c900538SJiong Wang CMD_OVE_LEN | FIELD_PREP(CMD_OV_LEN, xfer_num - 2)); 6668c900538SJiong Wang emit_cmd_indir(nfp_prog, CMD_TGT_WRITE32_SWAP, CMD_MODE_32b, 0, 6678c900538SJiong Wang reg_a(meta->paired_st->dst_reg * 2), off, 6688c900538SJiong Wang xfer_num - 2, true); 6698c900538SJiong Wang new_off = meta->paired_st->off + (xfer_num - 1) * 4; 6708c900538SJiong Wang off = re_load_imm_any(nfp_prog, new_off, imm_b(nfp_prog)); 6718c900538SJiong Wang emit_cmd(nfp_prog, CMD_TGT_WRITE8_SWAP, CMD_MODE_32b, 6728c900538SJiong Wang xfer_num - 1, reg_a(meta->paired_st->dst_reg * 2), off, 6738c900538SJiong Wang (len & 0x3) - 1, true); 6749879a381SJiong Wang } 6759879a381SJiong Wang 6769879a381SJiong Wang /* TODO: The following extra load is to make sure data flow be identical 6779879a381SJiong Wang * before and after we do memory copy optimization. 6789879a381SJiong Wang * 6799879a381SJiong Wang * The load destination register is not guaranteed to be dead, so we 6809879a381SJiong Wang * need to make sure it is loaded with the value the same as before 6819879a381SJiong Wang * this transformation. 6829879a381SJiong Wang * 6839879a381SJiong Wang * These extra loads could be removed once we have accurate register 6849879a381SJiong Wang * usage information. 6859879a381SJiong Wang */ 6869879a381SJiong Wang if (descending_seq) 6879879a381SJiong Wang xfer_num = 0; 6889879a381SJiong Wang else if (BPF_SIZE(meta->insn.code) != BPF_DW) 6899879a381SJiong Wang xfer_num = xfer_num - 1; 6909879a381SJiong Wang else 6919879a381SJiong Wang xfer_num = xfer_num - 2; 6929879a381SJiong Wang 6939879a381SJiong Wang switch (BPF_SIZE(meta->insn.code)) { 6949879a381SJiong Wang case BPF_B: 6959879a381SJiong Wang wrp_reg_subpart(nfp_prog, reg_both(meta->insn.dst_reg * 2), 6969879a381SJiong Wang reg_xfer(xfer_num), 1, 6979879a381SJiong Wang IS_ALIGNED(len, 4) ? 3 : (len & 3) - 1); 6989879a381SJiong Wang break; 6999879a381SJiong Wang case BPF_H: 7009879a381SJiong Wang wrp_reg_subpart(nfp_prog, reg_both(meta->insn.dst_reg * 2), 7019879a381SJiong Wang reg_xfer(xfer_num), 2, (len & 3) ^ 2); 7029879a381SJiong Wang break; 7039879a381SJiong Wang case BPF_W: 7049879a381SJiong Wang wrp_mov(nfp_prog, reg_both(meta->insn.dst_reg * 2), 7059879a381SJiong Wang reg_xfer(0)); 7069879a381SJiong Wang break; 7079879a381SJiong Wang case BPF_DW: 7089879a381SJiong Wang wrp_mov(nfp_prog, reg_both(meta->insn.dst_reg * 2), 7099879a381SJiong Wang reg_xfer(xfer_num)); 7109879a381SJiong Wang wrp_mov(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 7119879a381SJiong Wang reg_xfer(xfer_num + 1)); 7129879a381SJiong Wang break; 7139879a381SJiong Wang } 7149879a381SJiong Wang 7159879a381SJiong Wang if (BPF_SIZE(meta->insn.code) != BPF_DW) 7169879a381SJiong Wang wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 7179879a381SJiong Wang 7189879a381SJiong Wang return 0; 7199879a381SJiong Wang } 7209879a381SJiong Wang 721d9ae7f2bSJakub Kicinski static int 7220a793977SJakub Kicinski data_ld(struct nfp_prog *nfp_prog, swreg offset, u8 dst_gpr, int size) 723d9ae7f2bSJakub Kicinski { 724d9ae7f2bSJakub Kicinski unsigned int i; 725d9ae7f2bSJakub Kicinski u16 shift, sz; 726d9ae7f2bSJakub Kicinski 727d9ae7f2bSJakub Kicinski /* We load the value from the address indicated in @offset and then 728d9ae7f2bSJakub Kicinski * shift out the data we don't need. Note: this is big endian! 729d9ae7f2bSJakub Kicinski */ 7300a793977SJakub Kicinski sz = max(size, 4); 731d9ae7f2bSJakub Kicinski shift = size < 4 ? 4 - size : 0; 732d9ae7f2bSJakub Kicinski 7330a793977SJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_READ8, CMD_MODE_32b, 0, 7340a793977SJakub Kicinski pptr_reg(nfp_prog), offset, sz - 1, true); 7350a793977SJakub Kicinski 7360a793977SJakub Kicinski i = 0; 7370a793977SJakub Kicinski if (shift) 7380a793977SJakub Kicinski emit_shf(nfp_prog, reg_both(dst_gpr), reg_none(), SHF_OP_NONE, 7390a793977SJakub Kicinski reg_xfer(0), SHF_SC_R_SHF, shift * 8); 7400a793977SJakub Kicinski else 7410a793977SJakub Kicinski for (; i * 4 < size; i++) 7420a793977SJakub Kicinski wrp_mov(nfp_prog, reg_both(dst_gpr + i), reg_xfer(i)); 7430a793977SJakub Kicinski 7440a793977SJakub Kicinski if (i < 2) 7450a793977SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst_gpr + 1), 0); 7460a793977SJakub Kicinski 7470a793977SJakub Kicinski return 0; 7480a793977SJakub Kicinski } 7490a793977SJakub Kicinski 7500a793977SJakub Kicinski static int 7513dd43c33SJakub Kicinski data_ld_host_order(struct nfp_prog *nfp_prog, u8 dst_gpr, 7523dd43c33SJakub Kicinski swreg lreg, swreg rreg, int size, enum cmd_mode mode) 7532ca71441SJakub Kicinski { 7542ca71441SJakub Kicinski unsigned int i; 7552ca71441SJakub Kicinski u8 mask, sz; 7562ca71441SJakub Kicinski 7573dd43c33SJakub Kicinski /* We load the value from the address indicated in rreg + lreg and then 7582ca71441SJakub Kicinski * mask out the data we don't need. Note: this is little endian! 7592ca71441SJakub Kicinski */ 7602ca71441SJakub Kicinski sz = max(size, 4); 7612ca71441SJakub Kicinski mask = size < 4 ? GENMASK(size - 1, 0) : 0; 7622ca71441SJakub Kicinski 7633dd43c33SJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_READ32_SWAP, mode, 0, 7643dd43c33SJakub Kicinski lreg, rreg, sz / 4 - 1, true); 7652ca71441SJakub Kicinski 7662ca71441SJakub Kicinski i = 0; 7672ca71441SJakub Kicinski if (mask) 7682ca71441SJakub Kicinski emit_ld_field_any(nfp_prog, reg_both(dst_gpr), mask, 7692ca71441SJakub Kicinski reg_xfer(0), SHF_SC_NONE, 0, true); 7702ca71441SJakub Kicinski else 7712ca71441SJakub Kicinski for (; i * 4 < size; i++) 7722ca71441SJakub Kicinski wrp_mov(nfp_prog, reg_both(dst_gpr + i), reg_xfer(i)); 7732ca71441SJakub Kicinski 7742ca71441SJakub Kicinski if (i < 2) 7752ca71441SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst_gpr + 1), 0); 7762ca71441SJakub Kicinski 7772ca71441SJakub Kicinski return 0; 7782ca71441SJakub Kicinski } 7792ca71441SJakub Kicinski 7802ca71441SJakub Kicinski static int 7813dd43c33SJakub Kicinski data_ld_host_order_addr32(struct nfp_prog *nfp_prog, u8 src_gpr, swreg offset, 7823dd43c33SJakub Kicinski u8 dst_gpr, u8 size) 7833dd43c33SJakub Kicinski { 7843dd43c33SJakub Kicinski return data_ld_host_order(nfp_prog, dst_gpr, reg_a(src_gpr), offset, 7853dd43c33SJakub Kicinski size, CMD_MODE_32b); 7863dd43c33SJakub Kicinski } 7873dd43c33SJakub Kicinski 7883dd43c33SJakub Kicinski static int 7893dd43c33SJakub Kicinski data_ld_host_order_addr40(struct nfp_prog *nfp_prog, u8 src_gpr, swreg offset, 7903dd43c33SJakub Kicinski u8 dst_gpr, u8 size) 7913dd43c33SJakub Kicinski { 7923dd43c33SJakub Kicinski swreg rega, regb; 7933dd43c33SJakub Kicinski 7943dd43c33SJakub Kicinski addr40_offset(nfp_prog, src_gpr, offset, ®a, ®b); 7953dd43c33SJakub Kicinski 7963dd43c33SJakub Kicinski return data_ld_host_order(nfp_prog, dst_gpr, rega, regb, 7973dd43c33SJakub Kicinski size, CMD_MODE_40b_BA); 7983dd43c33SJakub Kicinski } 7993dd43c33SJakub Kicinski 8003dd43c33SJakub Kicinski static int 8010a793977SJakub Kicinski construct_data_ind_ld(struct nfp_prog *nfp_prog, u16 offset, u16 src, u8 size) 8020a793977SJakub Kicinski { 8030a793977SJakub Kicinski swreg tmp_reg; 8040a793977SJakub Kicinski 805d9ae7f2bSJakub Kicinski /* Calculate the true offset (src_reg + imm) */ 806d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, offset, imm_b(nfp_prog)); 8070a793977SJakub Kicinski emit_alu(nfp_prog, imm_both(nfp_prog), reg_a(src), ALU_OP_ADD, tmp_reg); 8080a793977SJakub Kicinski 809d9ae7f2bSJakub Kicinski /* Check packet length (size guaranteed to fit b/c it's u8) */ 810d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_a(nfp_prog), 811d9ae7f2bSJakub Kicinski imm_a(nfp_prog), ALU_OP_ADD, reg_imm(size)); 812d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 81318e53b6cSJakub Kicinski plen_reg(nfp_prog), ALU_OP_SUB, imm_a(nfp_prog)); 814e84797feSJakub Kicinski emit_br_relo(nfp_prog, BR_BLO, BR_OFF_RELO, 0, RELO_BR_GO_ABORT); 8150a793977SJakub Kicinski 816d9ae7f2bSJakub Kicinski /* Load data */ 8170a793977SJakub Kicinski return data_ld(nfp_prog, imm_b(nfp_prog), 0, size); 818d9ae7f2bSJakub Kicinski } 819d9ae7f2bSJakub Kicinski 820d9ae7f2bSJakub Kicinski static int construct_data_ld(struct nfp_prog *nfp_prog, u16 offset, u8 size) 821d9ae7f2bSJakub Kicinski { 8220a793977SJakub Kicinski swreg tmp_reg; 8230a793977SJakub Kicinski 8240a793977SJakub Kicinski /* Check packet length */ 8250a793977SJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, offset + size, imm_a(nfp_prog)); 8260a793977SJakub Kicinski emit_alu(nfp_prog, reg_none(), plen_reg(nfp_prog), ALU_OP_SUB, tmp_reg); 827e84797feSJakub Kicinski emit_br_relo(nfp_prog, BR_BLO, BR_OFF_RELO, 0, RELO_BR_GO_ABORT); 8280a793977SJakub Kicinski 8290a793977SJakub Kicinski /* Load data */ 8300a793977SJakub Kicinski tmp_reg = re_load_imm_any(nfp_prog, offset, imm_b(nfp_prog)); 8310a793977SJakub Kicinski return data_ld(nfp_prog, tmp_reg, 0, size); 832d9ae7f2bSJakub Kicinski } 833d9ae7f2bSJakub Kicinski 834e663fe38SJakub Kicinski static int 835e663fe38SJakub Kicinski data_stx_host_order(struct nfp_prog *nfp_prog, u8 dst_gpr, swreg offset, 836e663fe38SJakub Kicinski u8 src_gpr, u8 size) 837e663fe38SJakub Kicinski { 838e663fe38SJakub Kicinski unsigned int i; 839e663fe38SJakub Kicinski 840e663fe38SJakub Kicinski for (i = 0; i * 4 < size; i++) 841e663fe38SJakub Kicinski wrp_mov(nfp_prog, reg_xfer(i), reg_a(src_gpr + i)); 842e663fe38SJakub Kicinski 843e663fe38SJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_WRITE8_SWAP, CMD_MODE_32b, 0, 844e663fe38SJakub Kicinski reg_a(dst_gpr), offset, size - 1, true); 845e663fe38SJakub Kicinski 846e663fe38SJakub Kicinski return 0; 847e663fe38SJakub Kicinski } 848e663fe38SJakub Kicinski 849e663fe38SJakub Kicinski static int 850e663fe38SJakub Kicinski data_st_host_order(struct nfp_prog *nfp_prog, u8 dst_gpr, swreg offset, 851e663fe38SJakub Kicinski u64 imm, u8 size) 852e663fe38SJakub Kicinski { 853e663fe38SJakub Kicinski wrp_immed(nfp_prog, reg_xfer(0), imm); 854e663fe38SJakub Kicinski if (size == 8) 855e663fe38SJakub Kicinski wrp_immed(nfp_prog, reg_xfer(1), imm >> 32); 856e663fe38SJakub Kicinski 857e663fe38SJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_WRITE8_SWAP, CMD_MODE_32b, 0, 858e663fe38SJakub Kicinski reg_a(dst_gpr), offset, size - 1, true); 859e663fe38SJakub Kicinski 860e663fe38SJakub Kicinski return 0; 861e663fe38SJakub Kicinski } 862e663fe38SJakub Kicinski 863ee9133a8SJakub Kicinski typedef int 864ee9133a8SJakub Kicinski (*lmem_step)(struct nfp_prog *nfp_prog, u8 gpr, u8 gpr_byte, s32 off, 8652df03a50SJakub Kicinski unsigned int size, bool first, bool new_gpr, bool last, bool lm3, 8662df03a50SJakub Kicinski bool needs_inc); 867a82b23fbSJakub Kicinski 868a82b23fbSJakub Kicinski static int 869a82b23fbSJakub Kicinski wrp_lmem_load(struct nfp_prog *nfp_prog, u8 dst, u8 dst_byte, s32 off, 8702df03a50SJakub Kicinski unsigned int size, bool first, bool new_gpr, bool last, bool lm3, 8712df03a50SJakub Kicinski bool needs_inc) 872a82b23fbSJakub Kicinski { 8732df03a50SJakub Kicinski bool should_inc = needs_inc && new_gpr && !last; 874a82b23fbSJakub Kicinski u32 idx, src_byte; 875a82b23fbSJakub Kicinski enum shf_sc sc; 876a82b23fbSJakub Kicinski swreg reg; 877a82b23fbSJakub Kicinski int shf; 878a82b23fbSJakub Kicinski u8 mask; 879a82b23fbSJakub Kicinski 880a82b23fbSJakub Kicinski if (WARN_ON_ONCE(dst_byte + size > 4 || off % 4 + size > 4)) 881a82b23fbSJakub Kicinski return -EOPNOTSUPP; 882a82b23fbSJakub Kicinski 883a82b23fbSJakub Kicinski idx = off / 4; 884a82b23fbSJakub Kicinski 885a82b23fbSJakub Kicinski /* Move the entire word */ 886a82b23fbSJakub Kicinski if (size == 4) { 8872df03a50SJakub Kicinski wrp_mov(nfp_prog, reg_both(dst), 8882df03a50SJakub Kicinski should_inc ? reg_lm_inc(3) : reg_lm(lm3 ? 3 : 0, idx)); 889a82b23fbSJakub Kicinski return 0; 890a82b23fbSJakub Kicinski } 891a82b23fbSJakub Kicinski 8922df03a50SJakub Kicinski if (WARN_ON_ONCE(lm3 && idx > RE_REG_LM_IDX_MAX)) 8932df03a50SJakub Kicinski return -EOPNOTSUPP; 8942df03a50SJakub Kicinski 895a82b23fbSJakub Kicinski src_byte = off % 4; 896a82b23fbSJakub Kicinski 897a82b23fbSJakub Kicinski mask = (1 << size) - 1; 898a82b23fbSJakub Kicinski mask <<= dst_byte; 899a82b23fbSJakub Kicinski 900a82b23fbSJakub Kicinski if (WARN_ON_ONCE(mask > 0xf)) 901a82b23fbSJakub Kicinski return -EOPNOTSUPP; 902a82b23fbSJakub Kicinski 903a82b23fbSJakub Kicinski shf = abs(src_byte - dst_byte) * 8; 904a82b23fbSJakub Kicinski if (src_byte == dst_byte) { 905a82b23fbSJakub Kicinski sc = SHF_SC_NONE; 906a82b23fbSJakub Kicinski } else if (src_byte < dst_byte) { 907a82b23fbSJakub Kicinski shf = 32 - shf; 908a82b23fbSJakub Kicinski sc = SHF_SC_L_SHF; 909a82b23fbSJakub Kicinski } else { 910a82b23fbSJakub Kicinski sc = SHF_SC_R_SHF; 911a82b23fbSJakub Kicinski } 912a82b23fbSJakub Kicinski 913a82b23fbSJakub Kicinski /* ld_field can address fewer indexes, if offset too large do RMW. 914a82b23fbSJakub Kicinski * Because we RMV twice we waste 2 cycles on unaligned 8 byte writes. 915a82b23fbSJakub Kicinski */ 916a82b23fbSJakub Kicinski if (idx <= RE_REG_LM_IDX_MAX) { 9172df03a50SJakub Kicinski reg = reg_lm(lm3 ? 3 : 0, idx); 918a82b23fbSJakub Kicinski } else { 919a82b23fbSJakub Kicinski reg = imm_a(nfp_prog); 9209a90c83cSJakub Kicinski /* If it's not the first part of the load and we start a new GPR 9219a90c83cSJakub Kicinski * that means we are loading a second part of the LMEM word into 9229a90c83cSJakub Kicinski * a new GPR. IOW we've already looked that LMEM word and 9239a90c83cSJakub Kicinski * therefore it has been loaded into imm_a(). 9249a90c83cSJakub Kicinski */ 9259a90c83cSJakub Kicinski if (first || !new_gpr) 926a82b23fbSJakub Kicinski wrp_mov(nfp_prog, reg, reg_lm(0, idx)); 927a82b23fbSJakub Kicinski } 928a82b23fbSJakub Kicinski 929a82b23fbSJakub Kicinski emit_ld_field_any(nfp_prog, reg_both(dst), mask, reg, sc, shf, new_gpr); 930a82b23fbSJakub Kicinski 9312df03a50SJakub Kicinski if (should_inc) 9322df03a50SJakub Kicinski wrp_mov(nfp_prog, reg_none(), reg_lm_inc(3)); 9332df03a50SJakub Kicinski 934a82b23fbSJakub Kicinski return 0; 935a82b23fbSJakub Kicinski } 936ee9133a8SJakub Kicinski 937ee9133a8SJakub Kicinski static int 938ee9133a8SJakub Kicinski wrp_lmem_store(struct nfp_prog *nfp_prog, u8 src, u8 src_byte, s32 off, 9392df03a50SJakub Kicinski unsigned int size, bool first, bool new_gpr, bool last, bool lm3, 9402df03a50SJakub Kicinski bool needs_inc) 941ee9133a8SJakub Kicinski { 9422df03a50SJakub Kicinski bool should_inc = needs_inc && new_gpr && !last; 943ee9133a8SJakub Kicinski u32 idx, dst_byte; 944ee9133a8SJakub Kicinski enum shf_sc sc; 945ee9133a8SJakub Kicinski swreg reg; 946ee9133a8SJakub Kicinski int shf; 947ee9133a8SJakub Kicinski u8 mask; 948ee9133a8SJakub Kicinski 949ee9133a8SJakub Kicinski if (WARN_ON_ONCE(src_byte + size > 4 || off % 4 + size > 4)) 950ee9133a8SJakub Kicinski return -EOPNOTSUPP; 951ee9133a8SJakub Kicinski 952ee9133a8SJakub Kicinski idx = off / 4; 953ee9133a8SJakub Kicinski 954ee9133a8SJakub Kicinski /* Move the entire word */ 955ee9133a8SJakub Kicinski if (size == 4) { 9562df03a50SJakub Kicinski wrp_mov(nfp_prog, 9572df03a50SJakub Kicinski should_inc ? reg_lm_inc(3) : reg_lm(lm3 ? 3 : 0, idx), 9582df03a50SJakub Kicinski reg_b(src)); 959ee9133a8SJakub Kicinski return 0; 960ee9133a8SJakub Kicinski } 961ee9133a8SJakub Kicinski 9622df03a50SJakub Kicinski if (WARN_ON_ONCE(lm3 && idx > RE_REG_LM_IDX_MAX)) 9632df03a50SJakub Kicinski return -EOPNOTSUPP; 9642df03a50SJakub Kicinski 965ee9133a8SJakub Kicinski dst_byte = off % 4; 966ee9133a8SJakub Kicinski 967ee9133a8SJakub Kicinski mask = (1 << size) - 1; 968ee9133a8SJakub Kicinski mask <<= dst_byte; 969ee9133a8SJakub Kicinski 970ee9133a8SJakub Kicinski if (WARN_ON_ONCE(mask > 0xf)) 971ee9133a8SJakub Kicinski return -EOPNOTSUPP; 972ee9133a8SJakub Kicinski 973ee9133a8SJakub Kicinski shf = abs(src_byte - dst_byte) * 8; 974ee9133a8SJakub Kicinski if (src_byte == dst_byte) { 975ee9133a8SJakub Kicinski sc = SHF_SC_NONE; 976ee9133a8SJakub Kicinski } else if (src_byte < dst_byte) { 977ee9133a8SJakub Kicinski shf = 32 - shf; 978ee9133a8SJakub Kicinski sc = SHF_SC_L_SHF; 979ee9133a8SJakub Kicinski } else { 980ee9133a8SJakub Kicinski sc = SHF_SC_R_SHF; 981ee9133a8SJakub Kicinski } 982ee9133a8SJakub Kicinski 983ee9133a8SJakub Kicinski /* ld_field can address fewer indexes, if offset too large do RMW. 984ee9133a8SJakub Kicinski * Because we RMV twice we waste 2 cycles on unaligned 8 byte writes. 985ee9133a8SJakub Kicinski */ 986ee9133a8SJakub Kicinski if (idx <= RE_REG_LM_IDX_MAX) { 9872df03a50SJakub Kicinski reg = reg_lm(lm3 ? 3 : 0, idx); 988ee9133a8SJakub Kicinski } else { 989ee9133a8SJakub Kicinski reg = imm_a(nfp_prog); 9909a90c83cSJakub Kicinski /* Only first and last LMEM locations are going to need RMW, 9919a90c83cSJakub Kicinski * the middle location will be overwritten fully. 9929a90c83cSJakub Kicinski */ 9939a90c83cSJakub Kicinski if (first || last) 994ee9133a8SJakub Kicinski wrp_mov(nfp_prog, reg, reg_lm(0, idx)); 995ee9133a8SJakub Kicinski } 996ee9133a8SJakub Kicinski 997ee9133a8SJakub Kicinski emit_ld_field(nfp_prog, reg, mask, reg_b(src), sc, shf); 998ee9133a8SJakub Kicinski 9999a90c83cSJakub Kicinski if (new_gpr || last) { 1000ee9133a8SJakub Kicinski if (idx > RE_REG_LM_IDX_MAX) 1001ee9133a8SJakub Kicinski wrp_mov(nfp_prog, reg_lm(0, idx), reg); 10022df03a50SJakub Kicinski if (should_inc) 10032df03a50SJakub Kicinski wrp_mov(nfp_prog, reg_none(), reg_lm_inc(3)); 10049a90c83cSJakub Kicinski } 1005ee9133a8SJakub Kicinski 1006ee9133a8SJakub Kicinski return 0; 1007ee9133a8SJakub Kicinski } 1008ee9133a8SJakub Kicinski 1009ee9133a8SJakub Kicinski static int 1010ee9133a8SJakub Kicinski mem_op_stack(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1011b14157eeSJakub Kicinski unsigned int size, unsigned int ptr_off, u8 gpr, u8 ptr_gpr, 1012b14157eeSJakub Kicinski bool clr_gpr, lmem_step step) 1013ee9133a8SJakub Kicinski { 1014d3488480SJakub Kicinski s32 off = nfp_prog->stack_depth + meta->insn.off + ptr_off; 10159a90c83cSJakub Kicinski bool first = true, last; 10162df03a50SJakub Kicinski bool needs_inc = false; 10172df03a50SJakub Kicinski swreg stack_off_reg; 1018a82b23fbSJakub Kicinski u8 prev_gpr = 255; 1019ee9133a8SJakub Kicinski u32 gpr_byte = 0; 10202df03a50SJakub Kicinski bool lm3 = true; 1021ee9133a8SJakub Kicinski int ret; 1022ee9133a8SJakub Kicinski 1023b14157eeSJakub Kicinski if (meta->ptr_not_const) { 1024b14157eeSJakub Kicinski /* Use of the last encountered ptr_off is OK, they all have 1025b14157eeSJakub Kicinski * the same alignment. Depend on low bits of value being 1026b14157eeSJakub Kicinski * discarded when written to LMaddr register. 1027b14157eeSJakub Kicinski */ 1028b14157eeSJakub Kicinski stack_off_reg = ur_load_imm_any(nfp_prog, meta->insn.off, 1029b14157eeSJakub Kicinski stack_imm(nfp_prog)); 1030b14157eeSJakub Kicinski 1031b14157eeSJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), 1032b14157eeSJakub Kicinski reg_a(ptr_gpr), ALU_OP_ADD, stack_off_reg); 1033b14157eeSJakub Kicinski 1034b14157eeSJakub Kicinski needs_inc = true; 1035b14157eeSJakub Kicinski } else if (off + size <= 64) { 10362df03a50SJakub Kicinski /* We can reach bottom 64B with LMaddr0 */ 10372df03a50SJakub Kicinski lm3 = false; 10382df03a50SJakub Kicinski } else if (round_down(off, 32) == round_down(off + size - 1, 32)) { 10392df03a50SJakub Kicinski /* We have to set up a new pointer. If we know the offset 10402df03a50SJakub Kicinski * and the entire access falls into a single 32 byte aligned 10412df03a50SJakub Kicinski * window we won't have to increment the LM pointer. 10422df03a50SJakub Kicinski * The 32 byte alignment is imporant because offset is ORed in 10432df03a50SJakub Kicinski * not added when doing *l$indexN[off]. 10442df03a50SJakub Kicinski */ 10452df03a50SJakub Kicinski stack_off_reg = ur_load_imm_any(nfp_prog, round_down(off, 32), 10462df03a50SJakub Kicinski stack_imm(nfp_prog)); 10472df03a50SJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), 10482df03a50SJakub Kicinski stack_reg(nfp_prog), ALU_OP_ADD, stack_off_reg); 10492df03a50SJakub Kicinski 10502df03a50SJakub Kicinski off %= 32; 10512df03a50SJakub Kicinski } else { 10522df03a50SJakub Kicinski stack_off_reg = ur_load_imm_any(nfp_prog, round_down(off, 4), 10532df03a50SJakub Kicinski stack_imm(nfp_prog)); 10542df03a50SJakub Kicinski 10552df03a50SJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), 10562df03a50SJakub Kicinski stack_reg(nfp_prog), ALU_OP_ADD, stack_off_reg); 10572df03a50SJakub Kicinski 10582df03a50SJakub Kicinski needs_inc = true; 10592df03a50SJakub Kicinski } 10602df03a50SJakub Kicinski if (lm3) { 10612df03a50SJakub Kicinski emit_csr_wr(nfp_prog, imm_b(nfp_prog), NFP_CSR_ACT_LM_ADDR3); 10622df03a50SJakub Kicinski /* For size < 4 one slot will be filled by zeroing of upper. */ 10632df03a50SJakub Kicinski wrp_nops(nfp_prog, clr_gpr && size < 8 ? 2 : 3); 10642df03a50SJakub Kicinski } 10652df03a50SJakub Kicinski 1066a82b23fbSJakub Kicinski if (clr_gpr && size < 8) 1067a82b23fbSJakub Kicinski wrp_immed(nfp_prog, reg_both(gpr + 1), 0); 1068a82b23fbSJakub Kicinski 1069ee9133a8SJakub Kicinski while (size) { 1070ee9133a8SJakub Kicinski u32 slice_end; 1071ee9133a8SJakub Kicinski u8 slice_size; 1072ee9133a8SJakub Kicinski 1073ee9133a8SJakub Kicinski slice_size = min(size, 4 - gpr_byte); 1074ee9133a8SJakub Kicinski slice_end = min(off + slice_size, round_up(off + 1, 4)); 1075ee9133a8SJakub Kicinski slice_size = slice_end - off; 1076ee9133a8SJakub Kicinski 10779a90c83cSJakub Kicinski last = slice_size == size; 10789a90c83cSJakub Kicinski 10792df03a50SJakub Kicinski if (needs_inc) 10802df03a50SJakub Kicinski off %= 4; 10812df03a50SJakub Kicinski 1082a82b23fbSJakub Kicinski ret = step(nfp_prog, gpr, gpr_byte, off, slice_size, 10832df03a50SJakub Kicinski first, gpr != prev_gpr, last, lm3, needs_inc); 1084ee9133a8SJakub Kicinski if (ret) 1085ee9133a8SJakub Kicinski return ret; 1086ee9133a8SJakub Kicinski 1087a82b23fbSJakub Kicinski prev_gpr = gpr; 10889a90c83cSJakub Kicinski first = false; 10899a90c83cSJakub Kicinski 1090ee9133a8SJakub Kicinski gpr_byte += slice_size; 1091ee9133a8SJakub Kicinski if (gpr_byte >= 4) { 1092ee9133a8SJakub Kicinski gpr_byte -= 4; 1093ee9133a8SJakub Kicinski gpr++; 1094ee9133a8SJakub Kicinski } 1095ee9133a8SJakub Kicinski 1096ee9133a8SJakub Kicinski size -= slice_size; 1097ee9133a8SJakub Kicinski off += slice_size; 1098ee9133a8SJakub Kicinski } 1099ee9133a8SJakub Kicinski 1100ee9133a8SJakub Kicinski return 0; 1101ee9133a8SJakub Kicinski } 1102ee9133a8SJakub Kicinski 1103d9ae7f2bSJakub Kicinski static void 1104d9ae7f2bSJakub Kicinski wrp_alu_imm(struct nfp_prog *nfp_prog, u8 dst, enum alu_op alu_op, u32 imm) 1105d9ae7f2bSJakub Kicinski { 1106b3f868dfSJakub Kicinski swreg tmp_reg; 1107d9ae7f2bSJakub Kicinski 1108d9ae7f2bSJakub Kicinski if (alu_op == ALU_OP_AND) { 1109d9ae7f2bSJakub Kicinski if (!imm) 1110d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), 0); 1111d9ae7f2bSJakub Kicinski if (!imm || !~imm) 1112d9ae7f2bSJakub Kicinski return; 1113d9ae7f2bSJakub Kicinski } 1114d9ae7f2bSJakub Kicinski if (alu_op == ALU_OP_OR) { 1115d9ae7f2bSJakub Kicinski if (!~imm) 1116d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), ~0U); 1117d9ae7f2bSJakub Kicinski if (!imm || !~imm) 1118d9ae7f2bSJakub Kicinski return; 1119d9ae7f2bSJakub Kicinski } 1120d9ae7f2bSJakub Kicinski if (alu_op == ALU_OP_XOR) { 1121d9ae7f2bSJakub Kicinski if (!~imm) 1122d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_none(), 11235d42ced1SJiong Wang ALU_OP_NOT, reg_b(dst)); 1124d9ae7f2bSJakub Kicinski if (!imm || !~imm) 1125d9ae7f2bSJakub Kicinski return; 1126d9ae7f2bSJakub Kicinski } 1127d9ae7f2bSJakub Kicinski 1128d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm, imm_b(nfp_prog)); 1129d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_a(dst), alu_op, tmp_reg); 1130d9ae7f2bSJakub Kicinski } 1131d9ae7f2bSJakub Kicinski 1132d9ae7f2bSJakub Kicinski static int 1133d9ae7f2bSJakub Kicinski wrp_alu64_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1134d9ae7f2bSJakub Kicinski enum alu_op alu_op, bool skip) 1135d9ae7f2bSJakub Kicinski { 1136d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1137d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1138d9ae7f2bSJakub Kicinski 1139d9ae7f2bSJakub Kicinski if (skip) { 1140d9ae7f2bSJakub Kicinski meta->skip = true; 1141d9ae7f2bSJakub Kicinski return 0; 1142d9ae7f2bSJakub Kicinski } 1143d9ae7f2bSJakub Kicinski 1144d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, alu_op, imm & ~0U); 1145d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2 + 1, alu_op, imm >> 32); 1146d9ae7f2bSJakub Kicinski 1147d9ae7f2bSJakub Kicinski return 0; 1148d9ae7f2bSJakub Kicinski } 1149d9ae7f2bSJakub Kicinski 1150d9ae7f2bSJakub Kicinski static int 1151d9ae7f2bSJakub Kicinski wrp_alu64_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1152d9ae7f2bSJakub Kicinski enum alu_op alu_op) 1153d9ae7f2bSJakub Kicinski { 1154d9ae7f2bSJakub Kicinski u8 dst = meta->insn.dst_reg * 2, src = meta->insn.src_reg * 2; 1155d9ae7f2bSJakub Kicinski 1156d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_a(dst), alu_op, reg_b(src)); 1157d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst + 1), 1158d9ae7f2bSJakub Kicinski reg_a(dst + 1), alu_op, reg_b(src + 1)); 1159d9ae7f2bSJakub Kicinski 1160d9ae7f2bSJakub Kicinski return 0; 1161d9ae7f2bSJakub Kicinski } 1162d9ae7f2bSJakub Kicinski 1163d9ae7f2bSJakub Kicinski static int 1164d9ae7f2bSJakub Kicinski wrp_alu32_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1165d9ae7f2bSJakub Kicinski enum alu_op alu_op, bool skip) 1166d9ae7f2bSJakub Kicinski { 1167d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1168d9ae7f2bSJakub Kicinski 1169d9ae7f2bSJakub Kicinski if (skip) { 1170d9ae7f2bSJakub Kicinski meta->skip = true; 1171d9ae7f2bSJakub Kicinski return 0; 1172d9ae7f2bSJakub Kicinski } 1173d9ae7f2bSJakub Kicinski 1174d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, alu_op, insn->imm); 1175d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 1176d9ae7f2bSJakub Kicinski 1177d9ae7f2bSJakub Kicinski return 0; 1178d9ae7f2bSJakub Kicinski } 1179d9ae7f2bSJakub Kicinski 1180d9ae7f2bSJakub Kicinski static int 1181d9ae7f2bSJakub Kicinski wrp_alu32_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1182d9ae7f2bSJakub Kicinski enum alu_op alu_op) 1183d9ae7f2bSJakub Kicinski { 1184d9ae7f2bSJakub Kicinski u8 dst = meta->insn.dst_reg * 2, src = meta->insn.src_reg * 2; 1185d9ae7f2bSJakub Kicinski 1186d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_a(dst), alu_op, reg_b(src)); 1187d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 1188d9ae7f2bSJakub Kicinski 1189d9ae7f2bSJakub Kicinski return 0; 1190d9ae7f2bSJakub Kicinski } 1191d9ae7f2bSJakub Kicinski 1192d9ae7f2bSJakub Kicinski static void 1193d9ae7f2bSJakub Kicinski wrp_test_reg_one(struct nfp_prog *nfp_prog, u8 dst, enum alu_op alu_op, u8 src, 1194d9ae7f2bSJakub Kicinski enum br_mask br_mask, u16 off) 1195d9ae7f2bSJakub Kicinski { 1196d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(dst), alu_op, reg_b(src)); 1197d9ae7f2bSJakub Kicinski emit_br(nfp_prog, br_mask, off, 0); 1198d9ae7f2bSJakub Kicinski } 1199d9ae7f2bSJakub Kicinski 1200d9ae7f2bSJakub Kicinski static int 1201d9ae7f2bSJakub Kicinski wrp_test_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1202d9ae7f2bSJakub Kicinski enum alu_op alu_op, enum br_mask br_mask) 1203d9ae7f2bSJakub Kicinski { 1204d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1205d9ae7f2bSJakub Kicinski 1206d9ae7f2bSJakub Kicinski wrp_test_reg_one(nfp_prog, insn->dst_reg * 2, alu_op, 1207d9ae7f2bSJakub Kicinski insn->src_reg * 2, br_mask, insn->off); 1208d9ae7f2bSJakub Kicinski wrp_test_reg_one(nfp_prog, insn->dst_reg * 2 + 1, alu_op, 1209d9ae7f2bSJakub Kicinski insn->src_reg * 2 + 1, br_mask, insn->off); 1210d9ae7f2bSJakub Kicinski 1211d9ae7f2bSJakub Kicinski return 0; 1212d9ae7f2bSJakub Kicinski } 1213d9ae7f2bSJakub Kicinski 1214d9ae7f2bSJakub Kicinski static int 1215d9ae7f2bSJakub Kicinski wrp_cmp_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1216d9ae7f2bSJakub Kicinski enum br_mask br_mask, bool swap) 1217d9ae7f2bSJakub Kicinski { 1218d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1219d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1220d9ae7f2bSJakub Kicinski u8 reg = insn->dst_reg * 2; 1221b3f868dfSJakub Kicinski swreg tmp_reg; 1222d9ae7f2bSJakub Kicinski 1223d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 1224d9ae7f2bSJakub Kicinski if (!swap) 1225d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(reg), ALU_OP_SUB, tmp_reg); 1226d9ae7f2bSJakub Kicinski else 1227d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), tmp_reg, ALU_OP_SUB, reg_a(reg)); 1228d9ae7f2bSJakub Kicinski 1229d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 1230d9ae7f2bSJakub Kicinski if (!swap) 1231d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1232d9ae7f2bSJakub Kicinski reg_a(reg + 1), ALU_OP_SUB_C, tmp_reg); 1233d9ae7f2bSJakub Kicinski else 1234d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1235d9ae7f2bSJakub Kicinski tmp_reg, ALU_OP_SUB_C, reg_a(reg + 1)); 1236d9ae7f2bSJakub Kicinski 1237d9ae7f2bSJakub Kicinski emit_br(nfp_prog, br_mask, insn->off, 0); 1238d9ae7f2bSJakub Kicinski 1239d9ae7f2bSJakub Kicinski return 0; 1240d9ae7f2bSJakub Kicinski } 1241d9ae7f2bSJakub Kicinski 1242d9ae7f2bSJakub Kicinski static int 1243d9ae7f2bSJakub Kicinski wrp_cmp_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1244d9ae7f2bSJakub Kicinski enum br_mask br_mask, bool swap) 1245d9ae7f2bSJakub Kicinski { 1246d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 124726fa818dSJakub Kicinski u8 areg, breg; 124826fa818dSJakub Kicinski 124926fa818dSJakub Kicinski areg = insn->dst_reg * 2; 125026fa818dSJakub Kicinski breg = insn->src_reg * 2; 1251d9ae7f2bSJakub Kicinski 1252d9ae7f2bSJakub Kicinski if (swap) { 1253d9ae7f2bSJakub Kicinski areg ^= breg; 1254d9ae7f2bSJakub Kicinski breg ^= areg; 1255d9ae7f2bSJakub Kicinski areg ^= breg; 1256d9ae7f2bSJakub Kicinski } 1257d9ae7f2bSJakub Kicinski 1258d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(areg), ALU_OP_SUB, reg_b(breg)); 1259d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1260d9ae7f2bSJakub Kicinski reg_a(areg + 1), ALU_OP_SUB_C, reg_b(breg + 1)); 1261d9ae7f2bSJakub Kicinski emit_br(nfp_prog, br_mask, insn->off, 0); 1262d9ae7f2bSJakub Kicinski 1263d9ae7f2bSJakub Kicinski return 0; 1264d9ae7f2bSJakub Kicinski } 1265d9ae7f2bSJakub Kicinski 12663119d1fdSJakub Kicinski static void wrp_end32(struct nfp_prog *nfp_prog, swreg reg_in, u8 gpr_out) 12673119d1fdSJakub Kicinski { 12683119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr_out), 0xf, reg_in, 12693119d1fdSJakub Kicinski SHF_SC_R_ROT, 8); 12703119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr_out), 0x5, reg_a(gpr_out), 12713119d1fdSJakub Kicinski SHF_SC_R_ROT, 16); 12723119d1fdSJakub Kicinski } 12733119d1fdSJakub Kicinski 12740d49eaf4SJakub Kicinski static int adjust_head(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 12750d49eaf4SJakub Kicinski { 12760d49eaf4SJakub Kicinski swreg tmp = imm_a(nfp_prog), tmp_len = imm_b(nfp_prog); 12770d49eaf4SJakub Kicinski struct nfp_bpf_cap_adjust_head *adjust_head; 12780d49eaf4SJakub Kicinski u32 ret_einval, end; 12790d49eaf4SJakub Kicinski 12800d49eaf4SJakub Kicinski adjust_head = &nfp_prog->bpf->adjust_head; 12810d49eaf4SJakub Kicinski 12828231f844SJakub Kicinski /* Optimized version - 5 vs 14 cycles */ 12838231f844SJakub Kicinski if (nfp_prog->adjust_head_location != UINT_MAX) { 12848231f844SJakub Kicinski if (WARN_ON_ONCE(nfp_prog->adjust_head_location != meta->n)) 12858231f844SJakub Kicinski return -EINVAL; 12868231f844SJakub Kicinski 12878231f844SJakub Kicinski emit_alu(nfp_prog, pptr_reg(nfp_prog), 12888231f844SJakub Kicinski reg_a(2 * 2), ALU_OP_ADD, pptr_reg(nfp_prog)); 12898231f844SJakub Kicinski emit_alu(nfp_prog, plen_reg(nfp_prog), 12908231f844SJakub Kicinski plen_reg(nfp_prog), ALU_OP_SUB, reg_a(2 * 2)); 12918231f844SJakub Kicinski emit_alu(nfp_prog, pv_len(nfp_prog), 12928231f844SJakub Kicinski pv_len(nfp_prog), ALU_OP_SUB, reg_a(2 * 2)); 12938231f844SJakub Kicinski 12948231f844SJakub Kicinski wrp_immed(nfp_prog, reg_both(0), 0); 12958231f844SJakub Kicinski wrp_immed(nfp_prog, reg_both(1), 0); 12968231f844SJakub Kicinski 12978231f844SJakub Kicinski /* TODO: when adjust head is guaranteed to succeed we can 12988231f844SJakub Kicinski * also eliminate the following if (r0 == 0) branch. 12998231f844SJakub Kicinski */ 13008231f844SJakub Kicinski 13018231f844SJakub Kicinski return 0; 13028231f844SJakub Kicinski } 13038231f844SJakub Kicinski 13040d49eaf4SJakub Kicinski ret_einval = nfp_prog_current_offset(nfp_prog) + 14; 13050d49eaf4SJakub Kicinski end = ret_einval + 2; 13060d49eaf4SJakub Kicinski 13070d49eaf4SJakub Kicinski /* We need to use a temp because offset is just a part of the pkt ptr */ 13080d49eaf4SJakub Kicinski emit_alu(nfp_prog, tmp, 13090d49eaf4SJakub Kicinski reg_a(2 * 2), ALU_OP_ADD_2B, pptr_reg(nfp_prog)); 13100d49eaf4SJakub Kicinski 13110d49eaf4SJakub Kicinski /* Validate result will fit within FW datapath constraints */ 13120d49eaf4SJakub Kicinski emit_alu(nfp_prog, reg_none(), 13130d49eaf4SJakub Kicinski tmp, ALU_OP_SUB, reg_imm(adjust_head->off_min)); 13140d49eaf4SJakub Kicinski emit_br(nfp_prog, BR_BLO, ret_einval, 0); 13150d49eaf4SJakub Kicinski emit_alu(nfp_prog, reg_none(), 13160d49eaf4SJakub Kicinski reg_imm(adjust_head->off_max), ALU_OP_SUB, tmp); 13170d49eaf4SJakub Kicinski emit_br(nfp_prog, BR_BLO, ret_einval, 0); 13180d49eaf4SJakub Kicinski 13190d49eaf4SJakub Kicinski /* Validate the length is at least ETH_HLEN */ 13200d49eaf4SJakub Kicinski emit_alu(nfp_prog, tmp_len, 13210d49eaf4SJakub Kicinski plen_reg(nfp_prog), ALU_OP_SUB, reg_a(2 * 2)); 13220d49eaf4SJakub Kicinski emit_alu(nfp_prog, reg_none(), 13230d49eaf4SJakub Kicinski tmp_len, ALU_OP_SUB, reg_imm(ETH_HLEN)); 13240d49eaf4SJakub Kicinski emit_br(nfp_prog, BR_BMI, ret_einval, 0); 13250d49eaf4SJakub Kicinski 13260d49eaf4SJakub Kicinski /* Load the ret code */ 13270d49eaf4SJakub Kicinski wrp_immed(nfp_prog, reg_both(0), 0); 13280d49eaf4SJakub Kicinski wrp_immed(nfp_prog, reg_both(1), 0); 13290d49eaf4SJakub Kicinski 13300d49eaf4SJakub Kicinski /* Modify the packet metadata */ 13310d49eaf4SJakub Kicinski emit_ld_field(nfp_prog, pptr_reg(nfp_prog), 0x3, tmp, SHF_SC_NONE, 0); 13320d49eaf4SJakub Kicinski 13330d49eaf4SJakub Kicinski /* Skip over the -EINVAL ret code (defer 2) */ 13342314fe9eSJakub Kicinski emit_br(nfp_prog, BR_UNC, end, 2); 13350d49eaf4SJakub Kicinski 13360d49eaf4SJakub Kicinski emit_alu(nfp_prog, plen_reg(nfp_prog), 13370d49eaf4SJakub Kicinski plen_reg(nfp_prog), ALU_OP_SUB, reg_a(2 * 2)); 13380d49eaf4SJakub Kicinski emit_alu(nfp_prog, pv_len(nfp_prog), 13390d49eaf4SJakub Kicinski pv_len(nfp_prog), ALU_OP_SUB, reg_a(2 * 2)); 13400d49eaf4SJakub Kicinski 13410d49eaf4SJakub Kicinski /* return -EINVAL target */ 13420d49eaf4SJakub Kicinski if (!nfp_prog_confirm_current_offset(nfp_prog, ret_einval)) 13430d49eaf4SJakub Kicinski return -EINVAL; 13440d49eaf4SJakub Kicinski 13450d49eaf4SJakub Kicinski wrp_immed(nfp_prog, reg_both(0), -22); 13460d49eaf4SJakub Kicinski wrp_immed(nfp_prog, reg_both(1), ~0); 13470d49eaf4SJakub Kicinski 13480d49eaf4SJakub Kicinski if (!nfp_prog_confirm_current_offset(nfp_prog, end)) 13490d49eaf4SJakub Kicinski return -EINVAL; 13500d49eaf4SJakub Kicinski 13510d49eaf4SJakub Kicinski return 0; 13520d49eaf4SJakub Kicinski } 13530d49eaf4SJakub Kicinski 135477a3d311SJakub Kicinski static int 1355fc448497SJakub Kicinski map_call_stack_common(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 135677a3d311SJakub Kicinski { 135777a3d311SJakub Kicinski struct bpf_offloaded_map *offmap; 135877a3d311SJakub Kicinski struct nfp_bpf_map *nfp_map; 135977a3d311SJakub Kicinski bool load_lm_ptr; 136077a3d311SJakub Kicinski u32 ret_tgt; 136177a3d311SJakub Kicinski s64 lm_off; 136277a3d311SJakub Kicinski swreg tid; 136377a3d311SJakub Kicinski 136477a3d311SJakub Kicinski offmap = (struct bpf_offloaded_map *)meta->arg1.map_ptr; 136577a3d311SJakub Kicinski nfp_map = offmap->dev_priv; 136677a3d311SJakub Kicinski 136777a3d311SJakub Kicinski /* We only have to reload LM0 if the key is not at start of stack */ 136877a3d311SJakub Kicinski lm_off = nfp_prog->stack_depth; 13692f46e0c1SJakub Kicinski lm_off += meta->arg2.reg.var_off.value + meta->arg2.reg.off; 13702f46e0c1SJakub Kicinski load_lm_ptr = meta->arg2.var_off || lm_off; 137177a3d311SJakub Kicinski 137277a3d311SJakub Kicinski /* Set LM0 to start of key */ 137377a3d311SJakub Kicinski if (load_lm_ptr) 137477a3d311SJakub Kicinski emit_csr_wr(nfp_prog, reg_b(2 * 2), NFP_CSR_ACT_LM_ADDR0); 137544d65a47SJakub Kicinski if (meta->func_id == BPF_FUNC_map_update_elem) 137644d65a47SJakub Kicinski emit_csr_wr(nfp_prog, reg_b(3 * 2), NFP_CSR_ACT_LM_ADDR2); 137777a3d311SJakub Kicinski 137877a3d311SJakub Kicinski /* Load map ID into a register, it should actually fit as an immediate 137977a3d311SJakub Kicinski * but in case it doesn't deal with it here, not in the delay slots. 138077a3d311SJakub Kicinski */ 138177a3d311SJakub Kicinski tid = ur_load_imm_any(nfp_prog, nfp_map->tid, imm_a(nfp_prog)); 138277a3d311SJakub Kicinski 1383fc448497SJakub Kicinski emit_br_relo(nfp_prog, BR_UNC, BR_OFF_RELO + meta->func_id, 138477a3d311SJakub Kicinski 2, RELO_BR_HELPER); 138577a3d311SJakub Kicinski ret_tgt = nfp_prog_current_offset(nfp_prog) + 2; 138677a3d311SJakub Kicinski 138777a3d311SJakub Kicinski /* Load map ID into A0 */ 138877a3d311SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), tid); 138977a3d311SJakub Kicinski 139077a3d311SJakub Kicinski /* Load the return address into B0 */ 139177a3d311SJakub Kicinski wrp_immed_relo(nfp_prog, reg_b(0), ret_tgt, RELO_IMMED_REL); 139277a3d311SJakub Kicinski 139377a3d311SJakub Kicinski if (!nfp_prog_confirm_current_offset(nfp_prog, ret_tgt)) 139477a3d311SJakub Kicinski return -EINVAL; 139577a3d311SJakub Kicinski 139677a3d311SJakub Kicinski /* Reset the LM0 pointer */ 139777a3d311SJakub Kicinski if (!load_lm_ptr) 139877a3d311SJakub Kicinski return 0; 139977a3d311SJakub Kicinski 140077a3d311SJakub Kicinski emit_csr_wr(nfp_prog, stack_reg(nfp_prog), NFP_CSR_ACT_LM_ADDR0); 140177a3d311SJakub Kicinski wrp_nops(nfp_prog, 3); 140277a3d311SJakub Kicinski 140377a3d311SJakub Kicinski return 0; 140477a3d311SJakub Kicinski } 140577a3d311SJakub Kicinski 1406d9ae7f2bSJakub Kicinski /* --- Callbacks --- */ 1407d9ae7f2bSJakub Kicinski static int mov_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1408d9ae7f2bSJakub Kicinski { 1409d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1410b14157eeSJakub Kicinski u8 dst = insn->dst_reg * 2; 1411b14157eeSJakub Kicinski u8 src = insn->src_reg * 2; 1412d9ae7f2bSJakub Kicinski 1413b14157eeSJakub Kicinski if (insn->src_reg == BPF_REG_10) { 1414b14157eeSJakub Kicinski swreg stack_depth_reg; 1415b14157eeSJakub Kicinski 1416b14157eeSJakub Kicinski stack_depth_reg = ur_load_imm_any(nfp_prog, 1417b14157eeSJakub Kicinski nfp_prog->stack_depth, 1418b14157eeSJakub Kicinski stack_imm(nfp_prog)); 1419b14157eeSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), 1420b14157eeSJakub Kicinski stack_reg(nfp_prog), ALU_OP_ADD, stack_depth_reg); 1421b14157eeSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst + 1), 0); 1422b14157eeSJakub Kicinski } else { 1423b14157eeSJakub Kicinski wrp_reg_mov(nfp_prog, dst, src); 1424b14157eeSJakub Kicinski wrp_reg_mov(nfp_prog, dst + 1, src + 1); 1425b14157eeSJakub Kicinski } 1426d9ae7f2bSJakub Kicinski 1427d9ae7f2bSJakub Kicinski return 0; 1428d9ae7f2bSJakub Kicinski } 1429d9ae7f2bSJakub Kicinski 1430d9ae7f2bSJakub Kicinski static int mov_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1431d9ae7f2bSJakub Kicinski { 1432d9ae7f2bSJakub Kicinski u64 imm = meta->insn.imm; /* sign extend */ 1433d9ae7f2bSJakub Kicinski 1434d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2), imm & ~0U); 1435d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), imm >> 32); 1436d9ae7f2bSJakub Kicinski 1437d9ae7f2bSJakub Kicinski return 0; 1438d9ae7f2bSJakub Kicinski } 1439d9ae7f2bSJakub Kicinski 1440d9ae7f2bSJakub Kicinski static int xor_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1441d9ae7f2bSJakub Kicinski { 1442d9ae7f2bSJakub Kicinski return wrp_alu64_reg(nfp_prog, meta, ALU_OP_XOR); 1443d9ae7f2bSJakub Kicinski } 1444d9ae7f2bSJakub Kicinski 1445d9ae7f2bSJakub Kicinski static int xor_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1446d9ae7f2bSJakub Kicinski { 1447d9ae7f2bSJakub Kicinski return wrp_alu64_imm(nfp_prog, meta, ALU_OP_XOR, !meta->insn.imm); 1448d9ae7f2bSJakub Kicinski } 1449d9ae7f2bSJakub Kicinski 1450d9ae7f2bSJakub Kicinski static int and_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1451d9ae7f2bSJakub Kicinski { 1452d9ae7f2bSJakub Kicinski return wrp_alu64_reg(nfp_prog, meta, ALU_OP_AND); 1453d9ae7f2bSJakub Kicinski } 1454d9ae7f2bSJakub Kicinski 1455d9ae7f2bSJakub Kicinski static int and_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1456d9ae7f2bSJakub Kicinski { 1457d9ae7f2bSJakub Kicinski return wrp_alu64_imm(nfp_prog, meta, ALU_OP_AND, !~meta->insn.imm); 1458d9ae7f2bSJakub Kicinski } 1459d9ae7f2bSJakub Kicinski 1460d9ae7f2bSJakub Kicinski static int or_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1461d9ae7f2bSJakub Kicinski { 1462d9ae7f2bSJakub Kicinski return wrp_alu64_reg(nfp_prog, meta, ALU_OP_OR); 1463d9ae7f2bSJakub Kicinski } 1464d9ae7f2bSJakub Kicinski 1465d9ae7f2bSJakub Kicinski static int or_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1466d9ae7f2bSJakub Kicinski { 1467d9ae7f2bSJakub Kicinski return wrp_alu64_imm(nfp_prog, meta, ALU_OP_OR, !meta->insn.imm); 1468d9ae7f2bSJakub Kicinski } 1469d9ae7f2bSJakub Kicinski 1470d9ae7f2bSJakub Kicinski static int add_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1471d9ae7f2bSJakub Kicinski { 1472d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1473d9ae7f2bSJakub Kicinski 1474d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2), 1475d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_ADD, 1476d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2)); 1477d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 1478d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_ADD_C, 1479d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2 + 1)); 1480d9ae7f2bSJakub Kicinski 1481d9ae7f2bSJakub Kicinski return 0; 1482d9ae7f2bSJakub Kicinski } 1483d9ae7f2bSJakub Kicinski 1484d9ae7f2bSJakub Kicinski static int add_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1485d9ae7f2bSJakub Kicinski { 1486d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1487d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1488d9ae7f2bSJakub Kicinski 1489d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, ALU_OP_ADD, imm & ~0U); 1490d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2 + 1, ALU_OP_ADD_C, imm >> 32); 1491d9ae7f2bSJakub Kicinski 1492d9ae7f2bSJakub Kicinski return 0; 1493d9ae7f2bSJakub Kicinski } 1494d9ae7f2bSJakub Kicinski 1495d9ae7f2bSJakub Kicinski static int sub_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1496d9ae7f2bSJakub Kicinski { 1497d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1498d9ae7f2bSJakub Kicinski 1499d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2), 1500d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_SUB, 1501d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2)); 1502d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 1503d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_SUB_C, 1504d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2 + 1)); 1505d9ae7f2bSJakub Kicinski 1506d9ae7f2bSJakub Kicinski return 0; 1507d9ae7f2bSJakub Kicinski } 1508d9ae7f2bSJakub Kicinski 1509d9ae7f2bSJakub Kicinski static int sub_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1510d9ae7f2bSJakub Kicinski { 1511d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1512d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1513d9ae7f2bSJakub Kicinski 1514d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, ALU_OP_SUB, imm & ~0U); 1515d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2 + 1, ALU_OP_SUB_C, imm >> 32); 1516d9ae7f2bSJakub Kicinski 1517d9ae7f2bSJakub Kicinski return 0; 1518d9ae7f2bSJakub Kicinski } 1519d9ae7f2bSJakub Kicinski 1520254ef4d7SJiong Wang static int neg_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1521254ef4d7SJiong Wang { 1522254ef4d7SJiong Wang const struct bpf_insn *insn = &meta->insn; 1523254ef4d7SJiong Wang 1524254ef4d7SJiong Wang emit_alu(nfp_prog, reg_both(insn->dst_reg * 2), reg_imm(0), 1525254ef4d7SJiong Wang ALU_OP_SUB, reg_b(insn->dst_reg * 2)); 1526254ef4d7SJiong Wang emit_alu(nfp_prog, reg_both(insn->dst_reg * 2 + 1), reg_imm(0), 1527254ef4d7SJiong Wang ALU_OP_SUB_C, reg_b(insn->dst_reg * 2 + 1)); 1528254ef4d7SJiong Wang 1529254ef4d7SJiong Wang return 0; 1530254ef4d7SJiong Wang } 1531254ef4d7SJiong Wang 1532d9ae7f2bSJakub Kicinski static int shl_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1533d9ae7f2bSJakub Kicinski { 1534d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 15353cae1319SJakub Kicinski u8 dst = insn->dst_reg * 2; 1536d9ae7f2bSJakub Kicinski 15373cae1319SJakub Kicinski if (insn->imm < 32) { 15383cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst + 1), 15393cae1319SJakub Kicinski reg_a(dst + 1), SHF_OP_NONE, reg_b(dst), 15403cae1319SJakub Kicinski SHF_SC_R_DSHF, 32 - insn->imm); 15413cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst), 15423cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst), 15433cae1319SJakub Kicinski SHF_SC_L_SHF, insn->imm); 15443cae1319SJakub Kicinski } else if (insn->imm == 32) { 15453cae1319SJakub Kicinski wrp_reg_mov(nfp_prog, dst + 1, dst); 15463cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), 0); 15473cae1319SJakub Kicinski } else if (insn->imm > 32) { 15483cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst + 1), 15493cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst), 15503cae1319SJakub Kicinski SHF_SC_L_SHF, insn->imm - 32); 15513cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), 0); 15523cae1319SJakub Kicinski } 1553d9ae7f2bSJakub Kicinski 1554d9ae7f2bSJakub Kicinski return 0; 1555d9ae7f2bSJakub Kicinski } 1556d9ae7f2bSJakub Kicinski 1557d9ae7f2bSJakub Kicinski static int shr_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1558d9ae7f2bSJakub Kicinski { 1559d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 15603cae1319SJakub Kicinski u8 dst = insn->dst_reg * 2; 1561d9ae7f2bSJakub Kicinski 15623cae1319SJakub Kicinski if (insn->imm < 32) { 15633cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst), 15643cae1319SJakub Kicinski reg_a(dst + 1), SHF_OP_NONE, reg_b(dst), 15653cae1319SJakub Kicinski SHF_SC_R_DSHF, insn->imm); 15663cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst + 1), 15673cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst + 1), 15683cae1319SJakub Kicinski SHF_SC_R_SHF, insn->imm); 15693cae1319SJakub Kicinski } else if (insn->imm == 32) { 15703cae1319SJakub Kicinski wrp_reg_mov(nfp_prog, dst, dst + 1); 15713cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst + 1), 0); 15723cae1319SJakub Kicinski } else if (insn->imm > 32) { 15733cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst), 15743cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst + 1), 15753cae1319SJakub Kicinski SHF_SC_R_SHF, insn->imm - 32); 15763cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst + 1), 0); 15773cae1319SJakub Kicinski } 1578d9ae7f2bSJakub Kicinski 1579d9ae7f2bSJakub Kicinski return 0; 1580d9ae7f2bSJakub Kicinski } 1581d9ae7f2bSJakub Kicinski 1582d9ae7f2bSJakub Kicinski static int mov_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1583d9ae7f2bSJakub Kicinski { 1584d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1585d9ae7f2bSJakub Kicinski 1586d9ae7f2bSJakub Kicinski wrp_reg_mov(nfp_prog, insn->dst_reg * 2, insn->src_reg * 2); 1587d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 1588d9ae7f2bSJakub Kicinski 1589d9ae7f2bSJakub Kicinski return 0; 1590d9ae7f2bSJakub Kicinski } 1591d9ae7f2bSJakub Kicinski 1592d9ae7f2bSJakub Kicinski static int mov_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1593d9ae7f2bSJakub Kicinski { 1594d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1595d9ae7f2bSJakub Kicinski 1596d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2), insn->imm); 1597d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 1598d9ae7f2bSJakub Kicinski 1599d9ae7f2bSJakub Kicinski return 0; 1600d9ae7f2bSJakub Kicinski } 1601d9ae7f2bSJakub Kicinski 1602d9ae7f2bSJakub Kicinski static int xor_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1603d9ae7f2bSJakub Kicinski { 1604d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_XOR); 1605d9ae7f2bSJakub Kicinski } 1606d9ae7f2bSJakub Kicinski 1607d9ae7f2bSJakub Kicinski static int xor_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1608d9ae7f2bSJakub Kicinski { 1609d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_XOR, !~meta->insn.imm); 1610d9ae7f2bSJakub Kicinski } 1611d9ae7f2bSJakub Kicinski 1612d9ae7f2bSJakub Kicinski static int and_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1613d9ae7f2bSJakub Kicinski { 1614d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_AND); 1615d9ae7f2bSJakub Kicinski } 1616d9ae7f2bSJakub Kicinski 1617d9ae7f2bSJakub Kicinski static int and_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1618d9ae7f2bSJakub Kicinski { 1619d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_AND, !~meta->insn.imm); 1620d9ae7f2bSJakub Kicinski } 1621d9ae7f2bSJakub Kicinski 1622d9ae7f2bSJakub Kicinski static int or_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1623d9ae7f2bSJakub Kicinski { 1624d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_OR); 1625d9ae7f2bSJakub Kicinski } 1626d9ae7f2bSJakub Kicinski 1627d9ae7f2bSJakub Kicinski static int or_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1628d9ae7f2bSJakub Kicinski { 1629d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_OR, !meta->insn.imm); 1630d9ae7f2bSJakub Kicinski } 1631d9ae7f2bSJakub Kicinski 1632d9ae7f2bSJakub Kicinski static int add_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1633d9ae7f2bSJakub Kicinski { 1634d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_ADD); 1635d9ae7f2bSJakub Kicinski } 1636d9ae7f2bSJakub Kicinski 1637d9ae7f2bSJakub Kicinski static int add_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1638d9ae7f2bSJakub Kicinski { 1639d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_ADD, !meta->insn.imm); 1640d9ae7f2bSJakub Kicinski } 1641d9ae7f2bSJakub Kicinski 1642d9ae7f2bSJakub Kicinski static int sub_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1643d9ae7f2bSJakub Kicinski { 1644d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_SUB); 1645d9ae7f2bSJakub Kicinski } 1646d9ae7f2bSJakub Kicinski 1647d9ae7f2bSJakub Kicinski static int sub_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1648d9ae7f2bSJakub Kicinski { 1649d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_SUB, !meta->insn.imm); 1650d9ae7f2bSJakub Kicinski } 1651d9ae7f2bSJakub Kicinski 1652254ef4d7SJiong Wang static int neg_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1653254ef4d7SJiong Wang { 1654254ef4d7SJiong Wang u8 dst = meta->insn.dst_reg * 2; 1655254ef4d7SJiong Wang 1656254ef4d7SJiong Wang emit_alu(nfp_prog, reg_both(dst), reg_imm(0), ALU_OP_SUB, reg_b(dst)); 1657254ef4d7SJiong Wang wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 1658254ef4d7SJiong Wang 1659254ef4d7SJiong Wang return 0; 1660254ef4d7SJiong Wang } 1661254ef4d7SJiong Wang 1662d9ae7f2bSJakub Kicinski static int shl_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1663d9ae7f2bSJakub Kicinski { 1664d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1665d9ae7f2bSJakub Kicinski 1666d9ae7f2bSJakub Kicinski if (!insn->imm) 1667d9ae7f2bSJakub Kicinski return 1; /* TODO: zero shift means indirect */ 1668d9ae7f2bSJakub Kicinski 1669d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_both(insn->dst_reg * 2), 1670d9ae7f2bSJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(insn->dst_reg * 2), 1671d9ae7f2bSJakub Kicinski SHF_SC_L_SHF, insn->imm); 1672d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 1673d9ae7f2bSJakub Kicinski 1674d9ae7f2bSJakub Kicinski return 0; 1675d9ae7f2bSJakub Kicinski } 1676d9ae7f2bSJakub Kicinski 16773119d1fdSJakub Kicinski static int end_reg32(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 16783119d1fdSJakub Kicinski { 16793119d1fdSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 16803119d1fdSJakub Kicinski u8 gpr = insn->dst_reg * 2; 16813119d1fdSJakub Kicinski 16823119d1fdSJakub Kicinski switch (insn->imm) { 16833119d1fdSJakub Kicinski case 16: 16843119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr), 0x9, reg_b(gpr), 16853119d1fdSJakub Kicinski SHF_SC_R_ROT, 8); 16863119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr), 0xe, reg_a(gpr), 16873119d1fdSJakub Kicinski SHF_SC_R_SHF, 16); 16883119d1fdSJakub Kicinski 16893119d1fdSJakub Kicinski wrp_immed(nfp_prog, reg_both(gpr + 1), 0); 16903119d1fdSJakub Kicinski break; 16913119d1fdSJakub Kicinski case 32: 16923119d1fdSJakub Kicinski wrp_end32(nfp_prog, reg_a(gpr), gpr); 16933119d1fdSJakub Kicinski wrp_immed(nfp_prog, reg_both(gpr + 1), 0); 16943119d1fdSJakub Kicinski break; 16953119d1fdSJakub Kicinski case 64: 16963119d1fdSJakub Kicinski wrp_mov(nfp_prog, imm_a(nfp_prog), reg_b(gpr + 1)); 16973119d1fdSJakub Kicinski 16983119d1fdSJakub Kicinski wrp_end32(nfp_prog, reg_a(gpr), gpr + 1); 16993119d1fdSJakub Kicinski wrp_end32(nfp_prog, imm_a(nfp_prog), gpr); 17003119d1fdSJakub Kicinski break; 17013119d1fdSJakub Kicinski } 17023119d1fdSJakub Kicinski 17033119d1fdSJakub Kicinski return 0; 17043119d1fdSJakub Kicinski } 17053119d1fdSJakub Kicinski 1706d9ae7f2bSJakub Kicinski static int imm_ld8_part2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1707d9ae7f2bSJakub Kicinski { 17089f16c8abSJakub Kicinski struct nfp_insn_meta *prev = nfp_meta_prev(meta); 17099f16c8abSJakub Kicinski u32 imm_lo, imm_hi; 17109f16c8abSJakub Kicinski u8 dst; 17119f16c8abSJakub Kicinski 17129f16c8abSJakub Kicinski dst = prev->insn.dst_reg * 2; 17139f16c8abSJakub Kicinski imm_lo = prev->insn.imm; 17149f16c8abSJakub Kicinski imm_hi = meta->insn.imm; 17159f16c8abSJakub Kicinski 17169f16c8abSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), imm_lo); 17179f16c8abSJakub Kicinski 17189f16c8abSJakub Kicinski /* mov is always 1 insn, load imm may be two, so try to use mov */ 17199f16c8abSJakub Kicinski if (imm_hi == imm_lo) 17209f16c8abSJakub Kicinski wrp_mov(nfp_prog, reg_both(dst + 1), reg_a(dst)); 17219f16c8abSJakub Kicinski else 17229f16c8abSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst + 1), imm_hi); 1723d9ae7f2bSJakub Kicinski 1724d9ae7f2bSJakub Kicinski return 0; 1725d9ae7f2bSJakub Kicinski } 1726d9ae7f2bSJakub Kicinski 1727d9ae7f2bSJakub Kicinski static int imm_ld8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1728d9ae7f2bSJakub Kicinski { 1729d9ae7f2bSJakub Kicinski meta->double_cb = imm_ld8_part2; 1730d9ae7f2bSJakub Kicinski return 0; 1731d9ae7f2bSJakub Kicinski } 1732d9ae7f2bSJakub Kicinski 1733d9ae7f2bSJakub Kicinski static int data_ld1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1734d9ae7f2bSJakub Kicinski { 1735d9ae7f2bSJakub Kicinski return construct_data_ld(nfp_prog, meta->insn.imm, 1); 1736d9ae7f2bSJakub Kicinski } 1737d9ae7f2bSJakub Kicinski 1738d9ae7f2bSJakub Kicinski static int data_ld2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1739d9ae7f2bSJakub Kicinski { 1740d9ae7f2bSJakub Kicinski return construct_data_ld(nfp_prog, meta->insn.imm, 2); 1741d9ae7f2bSJakub Kicinski } 1742d9ae7f2bSJakub Kicinski 1743d9ae7f2bSJakub Kicinski static int data_ld4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1744d9ae7f2bSJakub Kicinski { 1745d9ae7f2bSJakub Kicinski return construct_data_ld(nfp_prog, meta->insn.imm, 4); 1746d9ae7f2bSJakub Kicinski } 1747d9ae7f2bSJakub Kicinski 1748d9ae7f2bSJakub Kicinski static int data_ind_ld1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1749d9ae7f2bSJakub Kicinski { 1750d9ae7f2bSJakub Kicinski return construct_data_ind_ld(nfp_prog, meta->insn.imm, 17510a793977SJakub Kicinski meta->insn.src_reg * 2, 1); 1752d9ae7f2bSJakub Kicinski } 1753d9ae7f2bSJakub Kicinski 1754d9ae7f2bSJakub Kicinski static int data_ind_ld2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1755d9ae7f2bSJakub Kicinski { 1756d9ae7f2bSJakub Kicinski return construct_data_ind_ld(nfp_prog, meta->insn.imm, 17570a793977SJakub Kicinski meta->insn.src_reg * 2, 2); 1758d9ae7f2bSJakub Kicinski } 1759d9ae7f2bSJakub Kicinski 1760d9ae7f2bSJakub Kicinski static int data_ind_ld4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1761d9ae7f2bSJakub Kicinski { 1762d9ae7f2bSJakub Kicinski return construct_data_ind_ld(nfp_prog, meta->insn.imm, 17630a793977SJakub Kicinski meta->insn.src_reg * 2, 4); 1764d9ae7f2bSJakub Kicinski } 1765d9ae7f2bSJakub Kicinski 1766a82b23fbSJakub Kicinski static int 1767a82b23fbSJakub Kicinski mem_ldx_stack(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1768d3488480SJakub Kicinski unsigned int size, unsigned int ptr_off) 1769a82b23fbSJakub Kicinski { 1770d3488480SJakub Kicinski return mem_op_stack(nfp_prog, meta, size, ptr_off, 1771b14157eeSJakub Kicinski meta->insn.dst_reg * 2, meta->insn.src_reg * 2, 1772b14157eeSJakub Kicinski true, wrp_lmem_load); 1773a82b23fbSJakub Kicinski } 1774a82b23fbSJakub Kicinski 1775943c57b9SJakub Kicinski static int mem_ldx_skb(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1776943c57b9SJakub Kicinski u8 size) 1777d9ae7f2bSJakub Kicinski { 1778bfddbc8aSJakub Kicinski swreg dst = reg_both(meta->insn.dst_reg * 2); 1779bfddbc8aSJakub Kicinski 1780943c57b9SJakub Kicinski switch (meta->insn.off) { 1781c6c580d7SJakub Kicinski case offsetof(struct __sk_buff, len): 1782c6c580d7SJakub Kicinski if (size != FIELD_SIZEOF(struct __sk_buff, len)) 1783943c57b9SJakub Kicinski return -EOPNOTSUPP; 1784bfddbc8aSJakub Kicinski wrp_mov(nfp_prog, dst, plen_reg(nfp_prog)); 1785bfddbc8aSJakub Kicinski break; 1786c6c580d7SJakub Kicinski case offsetof(struct __sk_buff, data): 1787c6c580d7SJakub Kicinski if (size != FIELD_SIZEOF(struct __sk_buff, data)) 1788bfddbc8aSJakub Kicinski return -EOPNOTSUPP; 1789bfddbc8aSJakub Kicinski wrp_mov(nfp_prog, dst, pptr_reg(nfp_prog)); 1790bfddbc8aSJakub Kicinski break; 1791c6c580d7SJakub Kicinski case offsetof(struct __sk_buff, data_end): 1792c6c580d7SJakub Kicinski if (size != FIELD_SIZEOF(struct __sk_buff, data_end)) 1793bfddbc8aSJakub Kicinski return -EOPNOTSUPP; 1794bfddbc8aSJakub Kicinski emit_alu(nfp_prog, dst, 1795bfddbc8aSJakub Kicinski plen_reg(nfp_prog), ALU_OP_ADD, pptr_reg(nfp_prog)); 1796943c57b9SJakub Kicinski break; 1797943c57b9SJakub Kicinski default: 1798d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1799943c57b9SJakub Kicinski } 1800943c57b9SJakub Kicinski 1801943c57b9SJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 1802d9ae7f2bSJakub Kicinski 1803d9ae7f2bSJakub Kicinski return 0; 1804d9ae7f2bSJakub Kicinski } 1805d9ae7f2bSJakub Kicinski 1806943c57b9SJakub Kicinski static int mem_ldx_xdp(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1807943c57b9SJakub Kicinski u8 size) 1808d9ae7f2bSJakub Kicinski { 1809b3f868dfSJakub Kicinski swreg dst = reg_both(meta->insn.dst_reg * 2); 1810d9ae7f2bSJakub Kicinski 1811943c57b9SJakub Kicinski switch (meta->insn.off) { 1812c6c580d7SJakub Kicinski case offsetof(struct xdp_md, data): 1813c6c580d7SJakub Kicinski if (size != FIELD_SIZEOF(struct xdp_md, data)) 1814c6c580d7SJakub Kicinski return -EOPNOTSUPP; 1815c000dfb5SJakub Kicinski wrp_mov(nfp_prog, dst, pptr_reg(nfp_prog)); 1816943c57b9SJakub Kicinski break; 1817c6c580d7SJakub Kicinski case offsetof(struct xdp_md, data_end): 1818c6c580d7SJakub Kicinski if (size != FIELD_SIZEOF(struct xdp_md, data_end)) 1819c6c580d7SJakub Kicinski return -EOPNOTSUPP; 1820943c57b9SJakub Kicinski emit_alu(nfp_prog, dst, 1821943c57b9SJakub Kicinski plen_reg(nfp_prog), ALU_OP_ADD, pptr_reg(nfp_prog)); 1822943c57b9SJakub Kicinski break; 1823943c57b9SJakub Kicinski default: 1824943c57b9SJakub Kicinski return -EOPNOTSUPP; 1825943c57b9SJakub Kicinski } 1826d9ae7f2bSJakub Kicinski 1827943c57b9SJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 1828d9ae7f2bSJakub Kicinski 1829d9ae7f2bSJakub Kicinski return 0; 1830d9ae7f2bSJakub Kicinski } 1831d9ae7f2bSJakub Kicinski 18322ca71441SJakub Kicinski static int 18332ca71441SJakub Kicinski mem_ldx_data(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 18342ca71441SJakub Kicinski unsigned int size) 18352ca71441SJakub Kicinski { 18362ca71441SJakub Kicinski swreg tmp_reg; 18372ca71441SJakub Kicinski 18382ca71441SJakub Kicinski tmp_reg = re_load_imm_any(nfp_prog, meta->insn.off, imm_b(nfp_prog)); 18392ca71441SJakub Kicinski 18403dd43c33SJakub Kicinski return data_ld_host_order_addr32(nfp_prog, meta->insn.src_reg * 2, 18413dd43c33SJakub Kicinski tmp_reg, meta->insn.dst_reg * 2, size); 18423dd43c33SJakub Kicinski } 18433dd43c33SJakub Kicinski 18443dd43c33SJakub Kicinski static int 18453dd43c33SJakub Kicinski mem_ldx_emem(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 18463dd43c33SJakub Kicinski unsigned int size) 18473dd43c33SJakub Kicinski { 18483dd43c33SJakub Kicinski swreg tmp_reg; 18493dd43c33SJakub Kicinski 18503dd43c33SJakub Kicinski tmp_reg = re_load_imm_any(nfp_prog, meta->insn.off, imm_b(nfp_prog)); 18513dd43c33SJakub Kicinski 18523dd43c33SJakub Kicinski return data_ld_host_order_addr40(nfp_prog, meta->insn.src_reg * 2, 18533dd43c33SJakub Kicinski tmp_reg, meta->insn.dst_reg * 2, size); 18542ca71441SJakub Kicinski } 18552ca71441SJakub Kicinski 1856be759237SJiong Wang static void 1857be759237SJiong Wang mem_ldx_data_init_pktcache(struct nfp_prog *nfp_prog, 1858be759237SJiong Wang struct nfp_insn_meta *meta) 1859be759237SJiong Wang { 1860be759237SJiong Wang s16 range_start = meta->pkt_cache.range_start; 1861be759237SJiong Wang s16 range_end = meta->pkt_cache.range_end; 1862be759237SJiong Wang swreg src_base, off; 1863be759237SJiong Wang u8 xfer_num, len; 1864be759237SJiong Wang bool indir; 1865be759237SJiong Wang 1866be759237SJiong Wang off = re_load_imm_any(nfp_prog, range_start, imm_b(nfp_prog)); 1867be759237SJiong Wang src_base = reg_a(meta->insn.src_reg * 2); 1868be759237SJiong Wang len = range_end - range_start; 1869be759237SJiong Wang xfer_num = round_up(len, REG_WIDTH) / REG_WIDTH; 1870be759237SJiong Wang 1871be759237SJiong Wang indir = len > 8 * REG_WIDTH; 1872be759237SJiong Wang /* Setup PREV_ALU for indirect mode. */ 1873be759237SJiong Wang if (indir) 1874be759237SJiong Wang wrp_immed(nfp_prog, reg_none(), 1875be759237SJiong Wang CMD_OVE_LEN | FIELD_PREP(CMD_OV_LEN, xfer_num - 1)); 1876be759237SJiong Wang 1877be759237SJiong Wang /* Cache memory into transfer-in registers. */ 1878be759237SJiong Wang emit_cmd_any(nfp_prog, CMD_TGT_READ32_SWAP, CMD_MODE_32b, 0, src_base, 1879be759237SJiong Wang off, xfer_num - 1, true, indir); 1880be759237SJiong Wang } 1881be759237SJiong Wang 1882be759237SJiong Wang static int 188391ff69e8SJiong Wang mem_ldx_data_from_pktcache_unaligned(struct nfp_prog *nfp_prog, 188491ff69e8SJiong Wang struct nfp_insn_meta *meta, 188591ff69e8SJiong Wang unsigned int size) 188691ff69e8SJiong Wang { 188791ff69e8SJiong Wang s16 range_start = meta->pkt_cache.range_start; 188891ff69e8SJiong Wang s16 insn_off = meta->insn.off - range_start; 188991ff69e8SJiong Wang swreg dst_lo, dst_hi, src_lo, src_mid; 189091ff69e8SJiong Wang u8 dst_gpr = meta->insn.dst_reg * 2; 189191ff69e8SJiong Wang u8 len_lo = size, len_mid = 0; 189291ff69e8SJiong Wang u8 idx = insn_off / REG_WIDTH; 189391ff69e8SJiong Wang u8 off = insn_off % REG_WIDTH; 189491ff69e8SJiong Wang 189591ff69e8SJiong Wang dst_hi = reg_both(dst_gpr + 1); 189691ff69e8SJiong Wang dst_lo = reg_both(dst_gpr); 189791ff69e8SJiong Wang src_lo = reg_xfer(idx); 189891ff69e8SJiong Wang 189991ff69e8SJiong Wang /* The read length could involve as many as three registers. */ 190091ff69e8SJiong Wang if (size > REG_WIDTH - off) { 190191ff69e8SJiong Wang /* Calculate the part in the second register. */ 190291ff69e8SJiong Wang len_lo = REG_WIDTH - off; 190391ff69e8SJiong Wang len_mid = size - len_lo; 190491ff69e8SJiong Wang 190591ff69e8SJiong Wang /* Calculate the part in the third register. */ 190691ff69e8SJiong Wang if (size > 2 * REG_WIDTH - off) 190791ff69e8SJiong Wang len_mid = REG_WIDTH; 190891ff69e8SJiong Wang } 190991ff69e8SJiong Wang 191091ff69e8SJiong Wang wrp_reg_subpart(nfp_prog, dst_lo, src_lo, len_lo, off); 191191ff69e8SJiong Wang 191291ff69e8SJiong Wang if (!len_mid) { 191391ff69e8SJiong Wang wrp_immed(nfp_prog, dst_hi, 0); 191491ff69e8SJiong Wang return 0; 191591ff69e8SJiong Wang } 191691ff69e8SJiong Wang 191791ff69e8SJiong Wang src_mid = reg_xfer(idx + 1); 191891ff69e8SJiong Wang 191991ff69e8SJiong Wang if (size <= REG_WIDTH) { 192091ff69e8SJiong Wang wrp_reg_or_subpart(nfp_prog, dst_lo, src_mid, len_mid, len_lo); 192191ff69e8SJiong Wang wrp_immed(nfp_prog, dst_hi, 0); 192291ff69e8SJiong Wang } else { 192391ff69e8SJiong Wang swreg src_hi = reg_xfer(idx + 2); 192491ff69e8SJiong Wang 192591ff69e8SJiong Wang wrp_reg_or_subpart(nfp_prog, dst_lo, src_mid, 192691ff69e8SJiong Wang REG_WIDTH - len_lo, len_lo); 192791ff69e8SJiong Wang wrp_reg_subpart(nfp_prog, dst_hi, src_mid, len_lo, 192891ff69e8SJiong Wang REG_WIDTH - len_lo); 192991ff69e8SJiong Wang wrp_reg_or_subpart(nfp_prog, dst_hi, src_hi, REG_WIDTH - len_lo, 193091ff69e8SJiong Wang len_lo); 193191ff69e8SJiong Wang } 193291ff69e8SJiong Wang 193391ff69e8SJiong Wang return 0; 193491ff69e8SJiong Wang } 193591ff69e8SJiong Wang 193691ff69e8SJiong Wang static int 1937be759237SJiong Wang mem_ldx_data_from_pktcache_aligned(struct nfp_prog *nfp_prog, 1938be759237SJiong Wang struct nfp_insn_meta *meta, 1939be759237SJiong Wang unsigned int size) 1940be759237SJiong Wang { 1941be759237SJiong Wang swreg dst_lo, dst_hi, src_lo; 1942be759237SJiong Wang u8 dst_gpr, idx; 1943be759237SJiong Wang 1944be759237SJiong Wang idx = (meta->insn.off - meta->pkt_cache.range_start) / REG_WIDTH; 1945be759237SJiong Wang dst_gpr = meta->insn.dst_reg * 2; 1946be759237SJiong Wang dst_hi = reg_both(dst_gpr + 1); 1947be759237SJiong Wang dst_lo = reg_both(dst_gpr); 1948be759237SJiong Wang src_lo = reg_xfer(idx); 1949be759237SJiong Wang 1950be759237SJiong Wang if (size < REG_WIDTH) { 1951be759237SJiong Wang wrp_reg_subpart(nfp_prog, dst_lo, src_lo, size, 0); 1952be759237SJiong Wang wrp_immed(nfp_prog, dst_hi, 0); 1953be759237SJiong Wang } else if (size == REG_WIDTH) { 1954be759237SJiong Wang wrp_mov(nfp_prog, dst_lo, src_lo); 1955be759237SJiong Wang wrp_immed(nfp_prog, dst_hi, 0); 1956be759237SJiong Wang } else { 1957be759237SJiong Wang swreg src_hi = reg_xfer(idx + 1); 1958be759237SJiong Wang 1959be759237SJiong Wang wrp_mov(nfp_prog, dst_lo, src_lo); 1960be759237SJiong Wang wrp_mov(nfp_prog, dst_hi, src_hi); 1961be759237SJiong Wang } 1962be759237SJiong Wang 1963be759237SJiong Wang return 0; 1964be759237SJiong Wang } 1965be759237SJiong Wang 1966be759237SJiong Wang static int 1967be759237SJiong Wang mem_ldx_data_from_pktcache(struct nfp_prog *nfp_prog, 1968be759237SJiong Wang struct nfp_insn_meta *meta, unsigned int size) 1969be759237SJiong Wang { 1970be759237SJiong Wang u8 off = meta->insn.off - meta->pkt_cache.range_start; 1971be759237SJiong Wang 197291ff69e8SJiong Wang if (IS_ALIGNED(off, REG_WIDTH)) 1973be759237SJiong Wang return mem_ldx_data_from_pktcache_aligned(nfp_prog, meta, size); 197491ff69e8SJiong Wang 197591ff69e8SJiong Wang return mem_ldx_data_from_pktcache_unaligned(nfp_prog, meta, size); 1976be759237SJiong Wang } 1977be759237SJiong Wang 19782ca71441SJakub Kicinski static int 19792ca71441SJakub Kicinski mem_ldx(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 19802ca71441SJakub Kicinski unsigned int size) 19812ca71441SJakub Kicinski { 19829879a381SJiong Wang if (meta->ldst_gather_len) 19839879a381SJiong Wang return nfp_cpp_memcpy(nfp_prog, meta); 19849879a381SJiong Wang 19852ca71441SJakub Kicinski if (meta->ptr.type == PTR_TO_CTX) { 1986012bb8a8SJakub Kicinski if (nfp_prog->type == BPF_PROG_TYPE_XDP) 19872ca71441SJakub Kicinski return mem_ldx_xdp(nfp_prog, meta, size); 19882ca71441SJakub Kicinski else 19892ca71441SJakub Kicinski return mem_ldx_skb(nfp_prog, meta, size); 19902ca71441SJakub Kicinski } 19912ca71441SJakub Kicinski 1992be759237SJiong Wang if (meta->ptr.type == PTR_TO_PACKET) { 1993be759237SJiong Wang if (meta->pkt_cache.range_end) { 1994be759237SJiong Wang if (meta->pkt_cache.do_init) 1995be759237SJiong Wang mem_ldx_data_init_pktcache(nfp_prog, meta); 1996be759237SJiong Wang 1997be759237SJiong Wang return mem_ldx_data_from_pktcache(nfp_prog, meta, size); 1998be759237SJiong Wang } else { 19992ca71441SJakub Kicinski return mem_ldx_data(nfp_prog, meta, size); 2000be759237SJiong Wang } 2001be759237SJiong Wang } 20022ca71441SJakub Kicinski 2003a82b23fbSJakub Kicinski if (meta->ptr.type == PTR_TO_STACK) 2004d3488480SJakub Kicinski return mem_ldx_stack(nfp_prog, meta, size, 2005d3488480SJakub Kicinski meta->ptr.off + meta->ptr.var_off.value); 2006a82b23fbSJakub Kicinski 20073dd43c33SJakub Kicinski if (meta->ptr.type == PTR_TO_MAP_VALUE) 20083dd43c33SJakub Kicinski return mem_ldx_emem(nfp_prog, meta, size); 20093dd43c33SJakub Kicinski 20102ca71441SJakub Kicinski return -EOPNOTSUPP; 20112ca71441SJakub Kicinski } 20122ca71441SJakub Kicinski 20132ca71441SJakub Kicinski static int mem_ldx1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 20142ca71441SJakub Kicinski { 20152ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 1); 20162ca71441SJakub Kicinski } 20172ca71441SJakub Kicinski 20182ca71441SJakub Kicinski static int mem_ldx2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 20192ca71441SJakub Kicinski { 20202ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 2); 20212ca71441SJakub Kicinski } 20222ca71441SJakub Kicinski 2023d9ae7f2bSJakub Kicinski static int mem_ldx4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 2024d9ae7f2bSJakub Kicinski { 20252ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 4); 20262ca71441SJakub Kicinski } 20272ca71441SJakub Kicinski 20282ca71441SJakub Kicinski static int mem_ldx8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 20292ca71441SJakub Kicinski { 20302ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 8); 2031d9ae7f2bSJakub Kicinski } 2032d9ae7f2bSJakub Kicinski 2033e663fe38SJakub Kicinski static int 2034e663fe38SJakub Kicinski mem_st_data(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 2035e663fe38SJakub Kicinski unsigned int size) 2036d9ae7f2bSJakub Kicinski { 2037e663fe38SJakub Kicinski u64 imm = meta->insn.imm; /* sign extend */ 2038e663fe38SJakub Kicinski swreg off_reg; 2039e663fe38SJakub Kicinski 2040e663fe38SJakub Kicinski off_reg = re_load_imm_any(nfp_prog, meta->insn.off, imm_b(nfp_prog)); 2041e663fe38SJakub Kicinski 2042e663fe38SJakub Kicinski return data_st_host_order(nfp_prog, meta->insn.dst_reg * 2, off_reg, 2043e663fe38SJakub Kicinski imm, size); 2044e663fe38SJakub Kicinski } 2045e663fe38SJakub Kicinski 2046e663fe38SJakub Kicinski static int mem_st(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 2047e663fe38SJakub Kicinski unsigned int size) 2048e663fe38SJakub Kicinski { 2049e663fe38SJakub Kicinski if (meta->ptr.type == PTR_TO_PACKET) 2050e663fe38SJakub Kicinski return mem_st_data(nfp_prog, meta, size); 2051e663fe38SJakub Kicinski 2052d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 2053d9ae7f2bSJakub Kicinski } 2054d9ae7f2bSJakub Kicinski 2055e663fe38SJakub Kicinski static int mem_st1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 2056d9ae7f2bSJakub Kicinski { 2057e663fe38SJakub Kicinski return mem_st(nfp_prog, meta, 1); 2058e663fe38SJakub Kicinski } 2059e663fe38SJakub Kicinski 2060e663fe38SJakub Kicinski static int mem_st2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 2061e663fe38SJakub Kicinski { 2062e663fe38SJakub Kicinski return mem_st(nfp_prog, meta, 2); 2063e663fe38SJakub Kicinski } 2064e663fe38SJakub Kicinski 2065e663fe38SJakub Kicinski static int mem_st4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 2066e663fe38SJakub Kicinski { 2067e663fe38SJakub Kicinski return mem_st(nfp_prog, meta, 4); 2068e663fe38SJakub Kicinski } 2069e663fe38SJakub Kicinski 2070e663fe38SJakub Kicinski static int mem_st8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 2071e663fe38SJakub Kicinski { 2072e663fe38SJakub Kicinski return mem_st(nfp_prog, meta, 8); 2073e663fe38SJakub Kicinski } 2074e663fe38SJakub Kicinski 2075e663fe38SJakub Kicinski static int 2076e663fe38SJakub Kicinski mem_stx_data(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 2077e663fe38SJakub Kicinski unsigned int size) 2078e663fe38SJakub Kicinski { 2079e663fe38SJakub Kicinski swreg off_reg; 2080e663fe38SJakub Kicinski 2081e663fe38SJakub Kicinski off_reg = re_load_imm_any(nfp_prog, meta->insn.off, imm_b(nfp_prog)); 2082e663fe38SJakub Kicinski 2083e663fe38SJakub Kicinski return data_stx_host_order(nfp_prog, meta->insn.dst_reg * 2, off_reg, 2084e663fe38SJakub Kicinski meta->insn.src_reg * 2, size); 2085e663fe38SJakub Kicinski } 2086e663fe38SJakub Kicinski 2087e663fe38SJakub Kicinski static int 2088ee9133a8SJakub Kicinski mem_stx_stack(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 2089d3488480SJakub Kicinski unsigned int size, unsigned int ptr_off) 2090ee9133a8SJakub Kicinski { 2091d3488480SJakub Kicinski return mem_op_stack(nfp_prog, meta, size, ptr_off, 2092b14157eeSJakub Kicinski meta->insn.src_reg * 2, meta->insn.dst_reg * 2, 2093b14157eeSJakub Kicinski false, wrp_lmem_store); 2094ee9133a8SJakub Kicinski } 2095ee9133a8SJakub Kicinski 2096ee9133a8SJakub Kicinski static int 2097e663fe38SJakub Kicinski mem_stx(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 2098e663fe38SJakub Kicinski unsigned int size) 2099e663fe38SJakub Kicinski { 2100e663fe38SJakub Kicinski if (meta->ptr.type == PTR_TO_PACKET) 2101e663fe38SJakub Kicinski return mem_stx_data(nfp_prog, meta, size); 2102e663fe38SJakub Kicinski 2103ee9133a8SJakub Kicinski if (meta->ptr.type == PTR_TO_STACK) 2104d3488480SJakub Kicinski return mem_stx_stack(nfp_prog, meta, size, 2105d3488480SJakub Kicinski meta->ptr.off + meta->ptr.var_off.value); 2106ee9133a8SJakub Kicinski 2107d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 2108d9ae7f2bSJakub Kicinski } 2109d9ae7f2bSJakub Kicinski 2110e663fe38SJakub Kicinski static int mem_stx1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 2111e663fe38SJakub Kicinski { 2112e663fe38SJakub Kicinski return mem_stx(nfp_prog, meta, 1); 2113e663fe38SJakub Kicinski } 2114e663fe38SJakub Kicinski 2115e663fe38SJakub Kicinski static int mem_stx2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 2116e663fe38SJakub Kicinski { 2117e663fe38SJakub Kicinski return mem_stx(nfp_prog, meta, 2); 2118e663fe38SJakub Kicinski } 2119e663fe38SJakub Kicinski 2120d9ae7f2bSJakub Kicinski static int mem_stx4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 2121d9ae7f2bSJakub Kicinski { 2122e663fe38SJakub Kicinski return mem_stx(nfp_prog, meta, 4); 2123e663fe38SJakub Kicinski } 21242ca71441SJakub Kicinski 2125e663fe38SJakub Kicinski static int mem_stx8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 2126e663fe38SJakub Kicinski { 2127e663fe38SJakub Kicinski return mem_stx(nfp_prog, meta, 8); 2128d9ae7f2bSJakub Kicinski } 2129d9ae7f2bSJakub Kicinski 2130dcb0c27fSJakub Kicinski static int 2131dcb0c27fSJakub Kicinski mem_xadd(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, bool is64) 2132dcb0c27fSJakub Kicinski { 2133dcb0c27fSJakub Kicinski swreg addra, addrb, off, prev_alu = imm_a(nfp_prog); 2134dcb0c27fSJakub Kicinski u8 dst_gpr = meta->insn.dst_reg * 2; 2135dcb0c27fSJakub Kicinski u8 src_gpr = meta->insn.src_reg * 2; 2136dcb0c27fSJakub Kicinski 2137dcb0c27fSJakub Kicinski off = ur_load_imm_any(nfp_prog, meta->insn.off, imm_b(nfp_prog)); 2138dcb0c27fSJakub Kicinski 2139dcb0c27fSJakub Kicinski /* If insn has an offset add to the address */ 2140dcb0c27fSJakub Kicinski if (!meta->insn.off) { 2141dcb0c27fSJakub Kicinski addra = reg_a(dst_gpr); 2142dcb0c27fSJakub Kicinski addrb = reg_b(dst_gpr + 1); 2143dcb0c27fSJakub Kicinski } else { 2144dcb0c27fSJakub Kicinski emit_alu(nfp_prog, imma_a(nfp_prog), 2145dcb0c27fSJakub Kicinski reg_a(dst_gpr), ALU_OP_ADD, off); 2146dcb0c27fSJakub Kicinski emit_alu(nfp_prog, imma_b(nfp_prog), 2147dcb0c27fSJakub Kicinski reg_a(dst_gpr + 1), ALU_OP_ADD_C, reg_imm(0)); 2148dcb0c27fSJakub Kicinski addra = imma_a(nfp_prog); 2149dcb0c27fSJakub Kicinski addrb = imma_b(nfp_prog); 2150dcb0c27fSJakub Kicinski } 2151dcb0c27fSJakub Kicinski 2152dcb0c27fSJakub Kicinski wrp_immed(nfp_prog, prev_alu, 2153dcb0c27fSJakub Kicinski FIELD_PREP(CMD_OVE_DATA, 2) | 2154dcb0c27fSJakub Kicinski CMD_OVE_LEN | 2155dcb0c27fSJakub Kicinski FIELD_PREP(CMD_OV_LEN, 0x8 | is64 << 2)); 2156dcb0c27fSJakub Kicinski wrp_reg_or_subpart(nfp_prog, prev_alu, reg_b(src_gpr), 2, 2); 2157dcb0c27fSJakub Kicinski emit_cmd_indir(nfp_prog, CMD_TGT_ADD_IMM, CMD_MODE_40b_BA, 0, 2158dcb0c27fSJakub Kicinski addra, addrb, 0, false); 2159dcb0c27fSJakub Kicinski 2160dcb0c27fSJakub Kicinski return 0; 2161dcb0c27fSJakub Kicinski } 2162dcb0c27fSJakub Kicinski 2163dcb0c27fSJakub Kicinski static int mem_xadd4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 2164dcb0c27fSJakub Kicinski { 2165dcb0c27fSJakub Kicinski return mem_xadd(nfp_prog, meta, false); 2166dcb0c27fSJakub Kicinski } 2167dcb0c27fSJakub Kicinski 2168dcb0c27fSJakub Kicinski static int mem_xadd8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 2169dcb0c27fSJakub Kicinski { 2170dcb0c27fSJakub Kicinski return mem_xadd(nfp_prog, meta, true); 2171dcb0c27fSJakub Kicinski } 2172dcb0c27fSJakub Kicinski 2173d9ae7f2bSJakub Kicinski static int jump(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 2174d9ae7f2bSJakub Kicinski { 2175d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_UNC, meta->insn.off, 0); 2176d9ae7f2bSJakub Kicinski 2177d9ae7f2bSJakub Kicinski return 0; 2178d9ae7f2bSJakub Kicinski } 2179d9ae7f2bSJakub Kicinski 2180d9ae7f2bSJakub Kicinski static int jeq_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 2181d9ae7f2bSJakub Kicinski { 2182d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 2183d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 2184b3f868dfSJakub Kicinski swreg or1, or2, tmp_reg; 2185b3f868dfSJakub Kicinski 2186b3f868dfSJakub Kicinski or1 = reg_a(insn->dst_reg * 2); 2187b3f868dfSJakub Kicinski or2 = reg_b(insn->dst_reg * 2 + 1); 2188d9ae7f2bSJakub Kicinski 2189d9ae7f2bSJakub Kicinski if (imm & ~0U) { 2190d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 2191d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_a(nfp_prog), 2192d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_XOR, tmp_reg); 2193d9ae7f2bSJakub Kicinski or1 = imm_a(nfp_prog); 2194d9ae7f2bSJakub Kicinski } 2195d9ae7f2bSJakub Kicinski 2196d9ae7f2bSJakub Kicinski if (imm >> 32) { 2197d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 2198d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), 2199d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_XOR, tmp_reg); 2200d9ae7f2bSJakub Kicinski or2 = imm_b(nfp_prog); 2201d9ae7f2bSJakub Kicinski } 2202d9ae7f2bSJakub Kicinski 2203d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), or1, ALU_OP_OR, or2); 2204d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BEQ, insn->off, 0); 2205d9ae7f2bSJakub Kicinski 2206d9ae7f2bSJakub Kicinski return 0; 2207d9ae7f2bSJakub Kicinski } 2208d9ae7f2bSJakub Kicinski 2209d9ae7f2bSJakub Kicinski static int jgt_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 2210d9ae7f2bSJakub Kicinski { 221126fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BLO, true); 2212d9ae7f2bSJakub Kicinski } 2213d9ae7f2bSJakub Kicinski 2214d9ae7f2bSJakub Kicinski static int jge_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 2215d9ae7f2bSJakub Kicinski { 221626fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BHS, false); 2217d9ae7f2bSJakub Kicinski } 2218d9ae7f2bSJakub Kicinski 22195dd294d4SDaniel Borkmann static int jlt_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 22205dd294d4SDaniel Borkmann { 222126fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BLO, false); 22225dd294d4SDaniel Borkmann } 22235dd294d4SDaniel Borkmann 22245dd294d4SDaniel Borkmann static int jle_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 22255dd294d4SDaniel Borkmann { 222626fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BHS, true); 22275dd294d4SDaniel Borkmann } 22285dd294d4SDaniel Borkmann 2229c087aa8bSNic Viljoen static int jsgt_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 2230c087aa8bSNic Viljoen { 2231c087aa8bSNic Viljoen return wrp_cmp_imm(nfp_prog, meta, BR_BLT, true); 2232c087aa8bSNic Viljoen } 2233c087aa8bSNic Viljoen 2234c087aa8bSNic Viljoen static int jsge_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 2235c087aa8bSNic Viljoen { 2236c087aa8bSNic Viljoen return wrp_cmp_imm(nfp_prog, meta, BR_BGE, false); 2237c087aa8bSNic Viljoen } 2238c087aa8bSNic Viljoen 2239c087aa8bSNic Viljoen static int jslt_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 2240c087aa8bSNic Viljoen { 2241c087aa8bSNic Viljoen return wrp_cmp_imm(nfp_prog, meta, BR_BLT, false); 2242c087aa8bSNic Viljoen } 2243c087aa8bSNic Viljoen 2244c087aa8bSNic Viljoen static int jsle_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 2245c087aa8bSNic Viljoen { 2246c087aa8bSNic Viljoen return wrp_cmp_imm(nfp_prog, meta, BR_BGE, true); 2247c087aa8bSNic Viljoen } 2248c087aa8bSNic Viljoen 2249d9ae7f2bSJakub Kicinski static int jset_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 2250d9ae7f2bSJakub Kicinski { 2251d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 2252d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 2253b3f868dfSJakub Kicinski swreg tmp_reg; 2254d9ae7f2bSJakub Kicinski 2255d9ae7f2bSJakub Kicinski if (!imm) { 2256d9ae7f2bSJakub Kicinski meta->skip = true; 2257d9ae7f2bSJakub Kicinski return 0; 2258d9ae7f2bSJakub Kicinski } 2259d9ae7f2bSJakub Kicinski 2260d9ae7f2bSJakub Kicinski if (imm & ~0U) { 2261d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 2262d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 2263d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_AND, tmp_reg); 2264d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 2265d9ae7f2bSJakub Kicinski } 2266d9ae7f2bSJakub Kicinski 2267d9ae7f2bSJakub Kicinski if (imm >> 32) { 2268d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 2269d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 2270d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_AND, tmp_reg); 2271d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 2272d9ae7f2bSJakub Kicinski } 2273d9ae7f2bSJakub Kicinski 2274d9ae7f2bSJakub Kicinski return 0; 2275d9ae7f2bSJakub Kicinski } 2276d9ae7f2bSJakub Kicinski 2277d9ae7f2bSJakub Kicinski static int jne_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 2278d9ae7f2bSJakub Kicinski { 2279d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 2280d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 2281b3f868dfSJakub Kicinski swreg tmp_reg; 2282d9ae7f2bSJakub Kicinski 2283d9ae7f2bSJakub Kicinski if (!imm) { 2284d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(insn->dst_reg * 2), 2285d9ae7f2bSJakub Kicinski ALU_OP_OR, reg_b(insn->dst_reg * 2 + 1)); 2286d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 228782837370SJakub Kicinski return 0; 2288d9ae7f2bSJakub Kicinski } 2289d9ae7f2bSJakub Kicinski 2290d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 2291d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 2292d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_XOR, tmp_reg); 2293d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 2294d9ae7f2bSJakub Kicinski 2295d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 2296d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 2297d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_XOR, tmp_reg); 2298d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 2299d9ae7f2bSJakub Kicinski 2300d9ae7f2bSJakub Kicinski return 0; 2301d9ae7f2bSJakub Kicinski } 2302d9ae7f2bSJakub Kicinski 2303d9ae7f2bSJakub Kicinski static int jeq_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 2304d9ae7f2bSJakub Kicinski { 2305d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 2306d9ae7f2bSJakub Kicinski 2307d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_a(nfp_prog), reg_a(insn->dst_reg * 2), 2308d9ae7f2bSJakub Kicinski ALU_OP_XOR, reg_b(insn->src_reg * 2)); 2309d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), reg_a(insn->dst_reg * 2 + 1), 2310d9ae7f2bSJakub Kicinski ALU_OP_XOR, reg_b(insn->src_reg * 2 + 1)); 2311d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 2312d9ae7f2bSJakub Kicinski imm_a(nfp_prog), ALU_OP_OR, imm_b(nfp_prog)); 2313d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BEQ, insn->off, 0); 2314d9ae7f2bSJakub Kicinski 2315d9ae7f2bSJakub Kicinski return 0; 2316d9ae7f2bSJakub Kicinski } 2317d9ae7f2bSJakub Kicinski 2318d9ae7f2bSJakub Kicinski static int jgt_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 2319d9ae7f2bSJakub Kicinski { 232026fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BLO, true); 2321d9ae7f2bSJakub Kicinski } 2322d9ae7f2bSJakub Kicinski 2323d9ae7f2bSJakub Kicinski static int jge_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 2324d9ae7f2bSJakub Kicinski { 232526fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BHS, false); 2326d9ae7f2bSJakub Kicinski } 2327d9ae7f2bSJakub Kicinski 23285dd294d4SDaniel Borkmann static int jlt_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 23295dd294d4SDaniel Borkmann { 233026fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BLO, false); 23315dd294d4SDaniel Borkmann } 23325dd294d4SDaniel Borkmann 23335dd294d4SDaniel Borkmann static int jle_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 23345dd294d4SDaniel Borkmann { 233526fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BHS, true); 23365dd294d4SDaniel Borkmann } 23375dd294d4SDaniel Borkmann 2338c087aa8bSNic Viljoen static int jsgt_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 2339c087aa8bSNic Viljoen { 2340c087aa8bSNic Viljoen return wrp_cmp_reg(nfp_prog, meta, BR_BLT, true); 2341c087aa8bSNic Viljoen } 2342c087aa8bSNic Viljoen 2343c087aa8bSNic Viljoen static int jsge_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 2344c087aa8bSNic Viljoen { 2345c087aa8bSNic Viljoen return wrp_cmp_reg(nfp_prog, meta, BR_BGE, false); 2346c087aa8bSNic Viljoen } 2347c087aa8bSNic Viljoen 2348c087aa8bSNic Viljoen static int jslt_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 2349c087aa8bSNic Viljoen { 2350c087aa8bSNic Viljoen return wrp_cmp_reg(nfp_prog, meta, BR_BLT, false); 2351c087aa8bSNic Viljoen } 2352c087aa8bSNic Viljoen 2353c087aa8bSNic Viljoen static int jsle_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 2354c087aa8bSNic Viljoen { 2355c087aa8bSNic Viljoen return wrp_cmp_reg(nfp_prog, meta, BR_BGE, true); 2356c087aa8bSNic Viljoen } 2357c087aa8bSNic Viljoen 2358d9ae7f2bSJakub Kicinski static int jset_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 2359d9ae7f2bSJakub Kicinski { 2360d9ae7f2bSJakub Kicinski return wrp_test_reg(nfp_prog, meta, ALU_OP_AND, BR_BNE); 2361d9ae7f2bSJakub Kicinski } 2362d9ae7f2bSJakub Kicinski 2363d9ae7f2bSJakub Kicinski static int jne_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 2364d9ae7f2bSJakub Kicinski { 2365d9ae7f2bSJakub Kicinski return wrp_test_reg(nfp_prog, meta, ALU_OP_XOR, BR_BNE); 2366d9ae7f2bSJakub Kicinski } 2367d9ae7f2bSJakub Kicinski 23682cb230bdSJakub Kicinski static int call(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 23692cb230bdSJakub Kicinski { 23702cb230bdSJakub Kicinski switch (meta->insn.imm) { 23710d49eaf4SJakub Kicinski case BPF_FUNC_xdp_adjust_head: 23720d49eaf4SJakub Kicinski return adjust_head(nfp_prog, meta); 237377a3d311SJakub Kicinski case BPF_FUNC_map_lookup_elem: 237444d65a47SJakub Kicinski case BPF_FUNC_map_update_elem: 2375bfee64deSJakub Kicinski case BPF_FUNC_map_delete_elem: 2376fc448497SJakub Kicinski return map_call_stack_common(nfp_prog, meta); 23772cb230bdSJakub Kicinski default: 23782cb230bdSJakub Kicinski WARN_ONCE(1, "verifier allowed unsupported function\n"); 23792cb230bdSJakub Kicinski return -EOPNOTSUPP; 23802cb230bdSJakub Kicinski } 23812cb230bdSJakub Kicinski } 23822cb230bdSJakub Kicinski 2383d9ae7f2bSJakub Kicinski static int goto_out(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 2384d9ae7f2bSJakub Kicinski { 2385e84797feSJakub Kicinski emit_br_relo(nfp_prog, BR_UNC, BR_OFF_RELO, 0, RELO_BR_GO_OUT); 2386d9ae7f2bSJakub Kicinski 2387d9ae7f2bSJakub Kicinski return 0; 2388d9ae7f2bSJakub Kicinski } 2389d9ae7f2bSJakub Kicinski 2390d9ae7f2bSJakub Kicinski static const instr_cb_t instr_cb[256] = { 2391d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_MOV | BPF_X] = mov_reg64, 2392d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_MOV | BPF_K] = mov_imm64, 2393d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_XOR | BPF_X] = xor_reg64, 2394d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_XOR | BPF_K] = xor_imm64, 2395d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_AND | BPF_X] = and_reg64, 2396d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_AND | BPF_K] = and_imm64, 2397d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_OR | BPF_X] = or_reg64, 2398d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_OR | BPF_K] = or_imm64, 2399d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_ADD | BPF_X] = add_reg64, 2400d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_ADD | BPF_K] = add_imm64, 2401d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_SUB | BPF_X] = sub_reg64, 2402d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_SUB | BPF_K] = sub_imm64, 2403254ef4d7SJiong Wang [BPF_ALU64 | BPF_NEG] = neg_reg64, 2404d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_LSH | BPF_K] = shl_imm64, 2405d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_RSH | BPF_K] = shr_imm64, 2406d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_MOV | BPF_X] = mov_reg, 2407d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_MOV | BPF_K] = mov_imm, 2408d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_XOR | BPF_X] = xor_reg, 2409d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_XOR | BPF_K] = xor_imm, 2410d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_AND | BPF_X] = and_reg, 2411d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_AND | BPF_K] = and_imm, 2412d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_OR | BPF_X] = or_reg, 2413d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_OR | BPF_K] = or_imm, 2414d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_ADD | BPF_X] = add_reg, 2415d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_ADD | BPF_K] = add_imm, 2416d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_SUB | BPF_X] = sub_reg, 2417d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_SUB | BPF_K] = sub_imm, 2418254ef4d7SJiong Wang [BPF_ALU | BPF_NEG] = neg_reg, 2419d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_LSH | BPF_K] = shl_imm, 24203119d1fdSJakub Kicinski [BPF_ALU | BPF_END | BPF_X] = end_reg32, 2421d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IMM | BPF_DW] = imm_ld8, 2422d9ae7f2bSJakub Kicinski [BPF_LD | BPF_ABS | BPF_B] = data_ld1, 2423d9ae7f2bSJakub Kicinski [BPF_LD | BPF_ABS | BPF_H] = data_ld2, 2424d9ae7f2bSJakub Kicinski [BPF_LD | BPF_ABS | BPF_W] = data_ld4, 2425d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IND | BPF_B] = data_ind_ld1, 2426d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IND | BPF_H] = data_ind_ld2, 2427d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IND | BPF_W] = data_ind_ld4, 24282ca71441SJakub Kicinski [BPF_LDX | BPF_MEM | BPF_B] = mem_ldx1, 24292ca71441SJakub Kicinski [BPF_LDX | BPF_MEM | BPF_H] = mem_ldx2, 2430d9ae7f2bSJakub Kicinski [BPF_LDX | BPF_MEM | BPF_W] = mem_ldx4, 24312ca71441SJakub Kicinski [BPF_LDX | BPF_MEM | BPF_DW] = mem_ldx8, 2432e663fe38SJakub Kicinski [BPF_STX | BPF_MEM | BPF_B] = mem_stx1, 2433e663fe38SJakub Kicinski [BPF_STX | BPF_MEM | BPF_H] = mem_stx2, 2434d9ae7f2bSJakub Kicinski [BPF_STX | BPF_MEM | BPF_W] = mem_stx4, 2435e663fe38SJakub Kicinski [BPF_STX | BPF_MEM | BPF_DW] = mem_stx8, 2436dcb0c27fSJakub Kicinski [BPF_STX | BPF_XADD | BPF_W] = mem_xadd4, 2437dcb0c27fSJakub Kicinski [BPF_STX | BPF_XADD | BPF_DW] = mem_xadd8, 2438e663fe38SJakub Kicinski [BPF_ST | BPF_MEM | BPF_B] = mem_st1, 2439e663fe38SJakub Kicinski [BPF_ST | BPF_MEM | BPF_H] = mem_st2, 2440e663fe38SJakub Kicinski [BPF_ST | BPF_MEM | BPF_W] = mem_st4, 2441e663fe38SJakub Kicinski [BPF_ST | BPF_MEM | BPF_DW] = mem_st8, 2442d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JA | BPF_K] = jump, 2443d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JEQ | BPF_K] = jeq_imm, 2444d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGT | BPF_K] = jgt_imm, 2445d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGE | BPF_K] = jge_imm, 24465dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLT | BPF_K] = jlt_imm, 24475dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLE | BPF_K] = jle_imm, 2448c087aa8bSNic Viljoen [BPF_JMP | BPF_JSGT | BPF_K] = jsgt_imm, 2449c087aa8bSNic Viljoen [BPF_JMP | BPF_JSGE | BPF_K] = jsge_imm, 2450c087aa8bSNic Viljoen [BPF_JMP | BPF_JSLT | BPF_K] = jslt_imm, 2451c087aa8bSNic Viljoen [BPF_JMP | BPF_JSLE | BPF_K] = jsle_imm, 2452d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JSET | BPF_K] = jset_imm, 2453d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JNE | BPF_K] = jne_imm, 2454d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JEQ | BPF_X] = jeq_reg, 2455d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGT | BPF_X] = jgt_reg, 2456d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGE | BPF_X] = jge_reg, 24575dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLT | BPF_X] = jlt_reg, 24585dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLE | BPF_X] = jle_reg, 2459c087aa8bSNic Viljoen [BPF_JMP | BPF_JSGT | BPF_X] = jsgt_reg, 2460c087aa8bSNic Viljoen [BPF_JMP | BPF_JSGE | BPF_X] = jsge_reg, 2461c087aa8bSNic Viljoen [BPF_JMP | BPF_JSLT | BPF_X] = jslt_reg, 2462c087aa8bSNic Viljoen [BPF_JMP | BPF_JSLE | BPF_X] = jsle_reg, 2463d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JSET | BPF_X] = jset_reg, 2464d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JNE | BPF_X] = jne_reg, 24652cb230bdSJakub Kicinski [BPF_JMP | BPF_CALL] = call, 2466d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_EXIT] = goto_out, 2467d9ae7f2bSJakub Kicinski }; 2468d9ae7f2bSJakub Kicinski 2469d9ae7f2bSJakub Kicinski /* --- Assembler logic --- */ 2470d9ae7f2bSJakub Kicinski static int nfp_fixup_branches(struct nfp_prog *nfp_prog) 2471d9ae7f2bSJakub Kicinski { 24725b674140SJiong Wang struct nfp_insn_meta *meta, *jmp_dst; 2473854dc87dSJiong Wang u32 idx, br_idx; 2474d9ae7f2bSJakub Kicinski 2475854dc87dSJiong Wang list_for_each_entry(meta, &nfp_prog->insns, l) { 2476d9ae7f2bSJakub Kicinski if (meta->skip) 2477d9ae7f2bSJakub Kicinski continue; 24782cb230bdSJakub Kicinski if (meta->insn.code == (BPF_JMP | BPF_CALL)) 24792cb230bdSJakub Kicinski continue; 2480d9ae7f2bSJakub Kicinski if (BPF_CLASS(meta->insn.code) != BPF_JMP) 2481d9ae7f2bSJakub Kicinski continue; 2482d9ae7f2bSJakub Kicinski 24835b674140SJiong Wang if (list_is_last(&meta->l, &nfp_prog->insns)) 24842314fe9eSJakub Kicinski br_idx = nfp_prog->last_bpf_off; 24855b674140SJiong Wang else 24862314fe9eSJakub Kicinski br_idx = list_next_entry(meta, l)->off - 1; 2487854dc87dSJiong Wang 2488d9ae7f2bSJakub Kicinski if (!nfp_is_br(nfp_prog->prog[br_idx])) { 2489d9ae7f2bSJakub Kicinski pr_err("Fixup found block not ending in branch %d %02x %016llx!!\n", 2490d9ae7f2bSJakub Kicinski br_idx, meta->insn.code, nfp_prog->prog[br_idx]); 2491d9ae7f2bSJakub Kicinski return -ELOOP; 2492d9ae7f2bSJakub Kicinski } 2493d9ae7f2bSJakub Kicinski /* Leave special branches for later */ 24942314fe9eSJakub Kicinski if (FIELD_GET(OP_RELO_TYPE, nfp_prog->prog[br_idx]) != 24952314fe9eSJakub Kicinski RELO_BR_REL) 2496d9ae7f2bSJakub Kicinski continue; 2497d9ae7f2bSJakub Kicinski 24985b674140SJiong Wang if (!meta->jmp_dst) { 24995b674140SJiong Wang pr_err("Non-exit jump doesn't have destination info recorded!!\n"); 2500d9ae7f2bSJakub Kicinski return -ELOOP; 2501d9ae7f2bSJakub Kicinski } 2502d9ae7f2bSJakub Kicinski 25035b674140SJiong Wang jmp_dst = meta->jmp_dst; 2504854dc87dSJiong Wang 25055b674140SJiong Wang if (jmp_dst->skip) { 2506d9ae7f2bSJakub Kicinski pr_err("Branch landing on removed instruction!!\n"); 2507d9ae7f2bSJakub Kicinski return -ELOOP; 2508d9ae7f2bSJakub Kicinski } 2509d9ae7f2bSJakub Kicinski 25102314fe9eSJakub Kicinski for (idx = meta->off; idx <= br_idx; idx++) { 2511d9ae7f2bSJakub Kicinski if (!nfp_is_br(nfp_prog->prog[idx])) 2512d9ae7f2bSJakub Kicinski continue; 25135b674140SJiong Wang br_set_offset(&nfp_prog->prog[idx], jmp_dst->off); 2514d9ae7f2bSJakub Kicinski } 2515d9ae7f2bSJakub Kicinski } 2516d9ae7f2bSJakub Kicinski 2517d9ae7f2bSJakub Kicinski return 0; 2518d9ae7f2bSJakub Kicinski } 2519d9ae7f2bSJakub Kicinski 2520d9ae7f2bSJakub Kicinski static void nfp_intro(struct nfp_prog *nfp_prog) 2521d9ae7f2bSJakub Kicinski { 252218e53b6cSJakub Kicinski wrp_immed(nfp_prog, plen_reg(nfp_prog), GENMASK(13, 0)); 252318e53b6cSJakub Kicinski emit_alu(nfp_prog, plen_reg(nfp_prog), 252418e53b6cSJakub Kicinski plen_reg(nfp_prog), ALU_OP_AND, pv_len(nfp_prog)); 2525d9ae7f2bSJakub Kicinski } 2526d9ae7f2bSJakub Kicinski 2527d9ae7f2bSJakub Kicinski static void nfp_outro_tc_da(struct nfp_prog *nfp_prog) 2528d9ae7f2bSJakub Kicinski { 2529d9ae7f2bSJakub Kicinski /* TC direct-action mode: 2530d9ae7f2bSJakub Kicinski * 0,1 ok NOT SUPPORTED[1] 2531d9ae7f2bSJakub Kicinski * 2 drop 0x22 -> drop, count as stat1 2532d9ae7f2bSJakub Kicinski * 4,5 nuke 0x02 -> drop 2533d9ae7f2bSJakub Kicinski * 7 redir 0x44 -> redir, count as stat2 2534d9ae7f2bSJakub Kicinski * * unspec 0x11 -> pass, count as stat0 2535d9ae7f2bSJakub Kicinski * 2536d9ae7f2bSJakub Kicinski * [1] We can't support OK and RECLASSIFY because we can't tell TC 2537d9ae7f2bSJakub Kicinski * the exact decision made. We are forced to support UNSPEC 2538d9ae7f2bSJakub Kicinski * to handle aborts so that's the only one we handle for passing 2539d9ae7f2bSJakub Kicinski * packets up the stack. 2540d9ae7f2bSJakub Kicinski */ 2541d9ae7f2bSJakub Kicinski /* Target for aborts */ 2542d9ae7f2bSJakub Kicinski nfp_prog->tgt_abort = nfp_prog_current_offset(nfp_prog); 2543d9ae7f2bSJakub Kicinski 2544e84797feSJakub Kicinski emit_br_relo(nfp_prog, BR_UNC, BR_OFF_RELO, 2, RELO_BR_NEXT_PKT); 2545d9ae7f2bSJakub Kicinski 2546c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 2547d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_imm(0x11), SHF_SC_L_SHF, 16); 2548d9ae7f2bSJakub Kicinski 2549d9ae7f2bSJakub Kicinski /* Target for normal exits */ 2550d9ae7f2bSJakub Kicinski nfp_prog->tgt_out = nfp_prog_current_offset(nfp_prog); 2551d9ae7f2bSJakub Kicinski 2552d9ae7f2bSJakub Kicinski /* if R0 > 7 jump to abort */ 2553d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_imm(7), ALU_OP_SUB, reg_b(0)); 2554d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BLO, nfp_prog->tgt_abort, 0); 2555c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 2556d9ae7f2bSJakub Kicinski 2557d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_b(2), 0x41221211); 2558d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_b(3), 0x41001211); 2559d9ae7f2bSJakub Kicinski 2560d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_a(1), 2561d9ae7f2bSJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(0), SHF_SC_L_SHF, 2); 2562d9ae7f2bSJakub Kicinski 2563d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(1), ALU_OP_OR, reg_imm(0)); 2564d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_a(2), 2565d9ae7f2bSJakub Kicinski reg_imm(0xf), SHF_OP_AND, reg_b(2), SHF_SC_R_SHF, 0); 2566d9ae7f2bSJakub Kicinski 2567d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(1), ALU_OP_OR, reg_imm(0)); 2568d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_b(2), 2569d9ae7f2bSJakub Kicinski reg_imm(0xf), SHF_OP_AND, reg_b(3), SHF_SC_R_SHF, 0); 2570d9ae7f2bSJakub Kicinski 2571e84797feSJakub Kicinski emit_br_relo(nfp_prog, BR_UNC, BR_OFF_RELO, 2, RELO_BR_NEXT_PKT); 2572d9ae7f2bSJakub Kicinski 2573d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_b(2), 2574d9ae7f2bSJakub Kicinski reg_a(2), SHF_OP_OR, reg_b(2), SHF_SC_L_SHF, 4); 2575d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_b(2), SHF_SC_L_SHF, 16); 2576d9ae7f2bSJakub Kicinski } 2577d9ae7f2bSJakub Kicinski 2578d9ae7f2bSJakub Kicinski static void nfp_outro_xdp(struct nfp_prog *nfp_prog) 2579d9ae7f2bSJakub Kicinski { 2580d9ae7f2bSJakub Kicinski /* XDP return codes: 2581d9ae7f2bSJakub Kicinski * 0 aborted 0x82 -> drop, count as stat3 2582d9ae7f2bSJakub Kicinski * 1 drop 0x22 -> drop, count as stat1 2583d9ae7f2bSJakub Kicinski * 2 pass 0x11 -> pass, count as stat0 2584d9ae7f2bSJakub Kicinski * 3 tx 0x44 -> redir, count as stat2 2585d9ae7f2bSJakub Kicinski * * unknown 0x82 -> drop, count as stat3 2586d9ae7f2bSJakub Kicinski */ 2587d9ae7f2bSJakub Kicinski /* Target for aborts */ 2588d9ae7f2bSJakub Kicinski nfp_prog->tgt_abort = nfp_prog_current_offset(nfp_prog); 2589d9ae7f2bSJakub Kicinski 2590e84797feSJakub Kicinski emit_br_relo(nfp_prog, BR_UNC, BR_OFF_RELO, 2, RELO_BR_NEXT_PKT); 2591d9ae7f2bSJakub Kicinski 2592c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 2593d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_imm(0x82), SHF_SC_L_SHF, 16); 2594d9ae7f2bSJakub Kicinski 2595d9ae7f2bSJakub Kicinski /* Target for normal exits */ 2596d9ae7f2bSJakub Kicinski nfp_prog->tgt_out = nfp_prog_current_offset(nfp_prog); 2597d9ae7f2bSJakub Kicinski 2598d9ae7f2bSJakub Kicinski /* if R0 > 3 jump to abort */ 2599d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_imm(3), ALU_OP_SUB, reg_b(0)); 2600d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BLO, nfp_prog->tgt_abort, 0); 2601d9ae7f2bSJakub Kicinski 2602d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_b(2), 0x44112282); 2603d9ae7f2bSJakub Kicinski 2604d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_a(1), 2605d9ae7f2bSJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(0), SHF_SC_L_SHF, 3); 2606d9ae7f2bSJakub Kicinski 2607d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(1), ALU_OP_OR, reg_imm(0)); 2608d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_b(2), 2609d9ae7f2bSJakub Kicinski reg_imm(0xff), SHF_OP_AND, reg_b(2), SHF_SC_R_SHF, 0); 2610d9ae7f2bSJakub Kicinski 2611e84797feSJakub Kicinski emit_br_relo(nfp_prog, BR_UNC, BR_OFF_RELO, 2, RELO_BR_NEXT_PKT); 2612d9ae7f2bSJakub Kicinski 2613c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 2614d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_b(2), SHF_SC_L_SHF, 16); 2615d9ae7f2bSJakub Kicinski } 2616d9ae7f2bSJakub Kicinski 2617d9ae7f2bSJakub Kicinski static void nfp_outro(struct nfp_prog *nfp_prog) 2618d9ae7f2bSJakub Kicinski { 2619012bb8a8SJakub Kicinski switch (nfp_prog->type) { 2620012bb8a8SJakub Kicinski case BPF_PROG_TYPE_SCHED_CLS: 2621d9ae7f2bSJakub Kicinski nfp_outro_tc_da(nfp_prog); 2622d9ae7f2bSJakub Kicinski break; 2623012bb8a8SJakub Kicinski case BPF_PROG_TYPE_XDP: 2624d9ae7f2bSJakub Kicinski nfp_outro_xdp(nfp_prog); 2625d9ae7f2bSJakub Kicinski break; 2626012bb8a8SJakub Kicinski default: 2627012bb8a8SJakub Kicinski WARN_ON(1); 2628d9ae7f2bSJakub Kicinski } 2629d9ae7f2bSJakub Kicinski } 2630d9ae7f2bSJakub Kicinski 2631d9ae7f2bSJakub Kicinski static int nfp_translate(struct nfp_prog *nfp_prog) 2632d9ae7f2bSJakub Kicinski { 2633d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta; 2634ff42bb9fSJakub Kicinski int err; 2635d9ae7f2bSJakub Kicinski 2636d9ae7f2bSJakub Kicinski nfp_intro(nfp_prog); 2637d9ae7f2bSJakub Kicinski if (nfp_prog->error) 2638d9ae7f2bSJakub Kicinski return nfp_prog->error; 2639d9ae7f2bSJakub Kicinski 2640d9ae7f2bSJakub Kicinski list_for_each_entry(meta, &nfp_prog->insns, l) { 2641d9ae7f2bSJakub Kicinski instr_cb_t cb = instr_cb[meta->insn.code]; 2642d9ae7f2bSJakub Kicinski 2643d9ae7f2bSJakub Kicinski meta->off = nfp_prog_current_offset(nfp_prog); 2644d9ae7f2bSJakub Kicinski 2645d9ae7f2bSJakub Kicinski if (meta->skip) { 2646d9ae7f2bSJakub Kicinski nfp_prog->n_translated++; 2647d9ae7f2bSJakub Kicinski continue; 2648d9ae7f2bSJakub Kicinski } 2649d9ae7f2bSJakub Kicinski 2650d9ae7f2bSJakub Kicinski if (nfp_meta_has_prev(nfp_prog, meta) && 2651d9ae7f2bSJakub Kicinski nfp_meta_prev(meta)->double_cb) 2652d9ae7f2bSJakub Kicinski cb = nfp_meta_prev(meta)->double_cb; 2653d9ae7f2bSJakub Kicinski if (!cb) 2654d9ae7f2bSJakub Kicinski return -ENOENT; 2655d9ae7f2bSJakub Kicinski err = cb(nfp_prog, meta); 2656d9ae7f2bSJakub Kicinski if (err) 2657d9ae7f2bSJakub Kicinski return err; 2658d9ae7f2bSJakub Kicinski 2659d9ae7f2bSJakub Kicinski nfp_prog->n_translated++; 2660d9ae7f2bSJakub Kicinski } 2661d9ae7f2bSJakub Kicinski 2662854dc87dSJiong Wang nfp_prog->last_bpf_off = nfp_prog_current_offset(nfp_prog) - 1; 2663854dc87dSJiong Wang 2664d9ae7f2bSJakub Kicinski nfp_outro(nfp_prog); 2665d9ae7f2bSJakub Kicinski if (nfp_prog->error) 2666d9ae7f2bSJakub Kicinski return nfp_prog->error; 2667d9ae7f2bSJakub Kicinski 2668ff42bb9fSJakub Kicinski wrp_nops(nfp_prog, NFP_USTORE_PREFETCH_WINDOW); 26691c03e03fSJakub Kicinski if (nfp_prog->error) 26701c03e03fSJakub Kicinski return nfp_prog->error; 26711c03e03fSJakub Kicinski 2672d9ae7f2bSJakub Kicinski return nfp_fixup_branches(nfp_prog); 2673d9ae7f2bSJakub Kicinski } 2674d9ae7f2bSJakub Kicinski 2675d9ae7f2bSJakub Kicinski /* --- Optimizations --- */ 2676d9ae7f2bSJakub Kicinski static void nfp_bpf_opt_reg_init(struct nfp_prog *nfp_prog) 2677d9ae7f2bSJakub Kicinski { 2678d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta; 2679d9ae7f2bSJakub Kicinski 2680d9ae7f2bSJakub Kicinski list_for_each_entry(meta, &nfp_prog->insns, l) { 2681d9ae7f2bSJakub Kicinski struct bpf_insn insn = meta->insn; 2682d9ae7f2bSJakub Kicinski 2683d9ae7f2bSJakub Kicinski /* Programs converted from cBPF start with register xoring */ 2684d9ae7f2bSJakub Kicinski if (insn.code == (BPF_ALU64 | BPF_XOR | BPF_X) && 2685d9ae7f2bSJakub Kicinski insn.src_reg == insn.dst_reg) 2686d9ae7f2bSJakub Kicinski continue; 2687d9ae7f2bSJakub Kicinski 2688d9ae7f2bSJakub Kicinski /* Programs start with R6 = R1 but we ignore the skb pointer */ 2689d9ae7f2bSJakub Kicinski if (insn.code == (BPF_ALU64 | BPF_MOV | BPF_X) && 2690d9ae7f2bSJakub Kicinski insn.src_reg == 1 && insn.dst_reg == 6) 2691d9ae7f2bSJakub Kicinski meta->skip = true; 2692d9ae7f2bSJakub Kicinski 2693d9ae7f2bSJakub Kicinski /* Return as soon as something doesn't match */ 2694d9ae7f2bSJakub Kicinski if (!meta->skip) 2695d9ae7f2bSJakub Kicinski return; 2696d9ae7f2bSJakub Kicinski } 2697d9ae7f2bSJakub Kicinski } 2698d9ae7f2bSJakub Kicinski 2699d9ae7f2bSJakub Kicinski /* Remove masking after load since our load guarantees this is not needed */ 2700d9ae7f2bSJakub Kicinski static void nfp_bpf_opt_ld_mask(struct nfp_prog *nfp_prog) 2701d9ae7f2bSJakub Kicinski { 2702d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta1, *meta2; 2703d9ae7f2bSJakub Kicinski const s32 exp_mask[] = { 2704d9ae7f2bSJakub Kicinski [BPF_B] = 0x000000ffU, 2705d9ae7f2bSJakub Kicinski [BPF_H] = 0x0000ffffU, 2706d9ae7f2bSJakub Kicinski [BPF_W] = 0xffffffffU, 2707d9ae7f2bSJakub Kicinski }; 2708d9ae7f2bSJakub Kicinski 2709d9ae7f2bSJakub Kicinski nfp_for_each_insn_walk2(nfp_prog, meta1, meta2) { 2710d9ae7f2bSJakub Kicinski struct bpf_insn insn, next; 2711d9ae7f2bSJakub Kicinski 2712d9ae7f2bSJakub Kicinski insn = meta1->insn; 2713d9ae7f2bSJakub Kicinski next = meta2->insn; 2714d9ae7f2bSJakub Kicinski 2715d9ae7f2bSJakub Kicinski if (BPF_CLASS(insn.code) != BPF_LD) 2716d9ae7f2bSJakub Kicinski continue; 2717d9ae7f2bSJakub Kicinski if (BPF_MODE(insn.code) != BPF_ABS && 2718d9ae7f2bSJakub Kicinski BPF_MODE(insn.code) != BPF_IND) 2719d9ae7f2bSJakub Kicinski continue; 2720d9ae7f2bSJakub Kicinski 2721d9ae7f2bSJakub Kicinski if (next.code != (BPF_ALU64 | BPF_AND | BPF_K)) 2722d9ae7f2bSJakub Kicinski continue; 2723d9ae7f2bSJakub Kicinski 2724d9ae7f2bSJakub Kicinski if (!exp_mask[BPF_SIZE(insn.code)]) 2725d9ae7f2bSJakub Kicinski continue; 2726d9ae7f2bSJakub Kicinski if (exp_mask[BPF_SIZE(insn.code)] != next.imm) 2727d9ae7f2bSJakub Kicinski continue; 2728d9ae7f2bSJakub Kicinski 2729d9ae7f2bSJakub Kicinski if (next.src_reg || next.dst_reg) 2730d9ae7f2bSJakub Kicinski continue; 2731d9ae7f2bSJakub Kicinski 27321266f5d6SJiong Wang if (meta2->flags & FLAG_INSN_IS_JUMP_DST) 27331266f5d6SJiong Wang continue; 27341266f5d6SJiong Wang 2735d9ae7f2bSJakub Kicinski meta2->skip = true; 2736d9ae7f2bSJakub Kicinski } 2737d9ae7f2bSJakub Kicinski } 2738d9ae7f2bSJakub Kicinski 2739d9ae7f2bSJakub Kicinski static void nfp_bpf_opt_ld_shift(struct nfp_prog *nfp_prog) 2740d9ae7f2bSJakub Kicinski { 2741d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta1, *meta2, *meta3; 2742d9ae7f2bSJakub Kicinski 2743d9ae7f2bSJakub Kicinski nfp_for_each_insn_walk3(nfp_prog, meta1, meta2, meta3) { 2744d9ae7f2bSJakub Kicinski struct bpf_insn insn, next1, next2; 2745d9ae7f2bSJakub Kicinski 2746d9ae7f2bSJakub Kicinski insn = meta1->insn; 2747d9ae7f2bSJakub Kicinski next1 = meta2->insn; 2748d9ae7f2bSJakub Kicinski next2 = meta3->insn; 2749d9ae7f2bSJakub Kicinski 2750d9ae7f2bSJakub Kicinski if (BPF_CLASS(insn.code) != BPF_LD) 2751d9ae7f2bSJakub Kicinski continue; 2752d9ae7f2bSJakub Kicinski if (BPF_MODE(insn.code) != BPF_ABS && 2753d9ae7f2bSJakub Kicinski BPF_MODE(insn.code) != BPF_IND) 2754d9ae7f2bSJakub Kicinski continue; 2755d9ae7f2bSJakub Kicinski if (BPF_SIZE(insn.code) != BPF_W) 2756d9ae7f2bSJakub Kicinski continue; 2757d9ae7f2bSJakub Kicinski 2758d9ae7f2bSJakub Kicinski if (!(next1.code == (BPF_LSH | BPF_K | BPF_ALU64) && 2759d9ae7f2bSJakub Kicinski next2.code == (BPF_RSH | BPF_K | BPF_ALU64)) && 2760d9ae7f2bSJakub Kicinski !(next1.code == (BPF_RSH | BPF_K | BPF_ALU64) && 2761d9ae7f2bSJakub Kicinski next2.code == (BPF_LSH | BPF_K | BPF_ALU64))) 2762d9ae7f2bSJakub Kicinski continue; 2763d9ae7f2bSJakub Kicinski 2764d9ae7f2bSJakub Kicinski if (next1.src_reg || next1.dst_reg || 2765d9ae7f2bSJakub Kicinski next2.src_reg || next2.dst_reg) 2766d9ae7f2bSJakub Kicinski continue; 2767d9ae7f2bSJakub Kicinski 2768d9ae7f2bSJakub Kicinski if (next1.imm != 0x20 || next2.imm != 0x20) 2769d9ae7f2bSJakub Kicinski continue; 2770d9ae7f2bSJakub Kicinski 277129fe46efSJiong Wang if (meta2->flags & FLAG_INSN_IS_JUMP_DST || 277229fe46efSJiong Wang meta3->flags & FLAG_INSN_IS_JUMP_DST) 277329fe46efSJiong Wang continue; 277429fe46efSJiong Wang 2775d9ae7f2bSJakub Kicinski meta2->skip = true; 2776d9ae7f2bSJakub Kicinski meta3->skip = true; 2777d9ae7f2bSJakub Kicinski } 2778d9ae7f2bSJakub Kicinski } 2779d9ae7f2bSJakub Kicinski 27806bc7103cSJiong Wang /* load/store pair that forms memory copy sould look like the following: 27816bc7103cSJiong Wang * 27826bc7103cSJiong Wang * ld_width R, [addr_src + offset_src] 27836bc7103cSJiong Wang * st_width [addr_dest + offset_dest], R 27846bc7103cSJiong Wang * 27856bc7103cSJiong Wang * The destination register of load and source register of store should 27866bc7103cSJiong Wang * be the same, load and store should also perform at the same width. 27876bc7103cSJiong Wang * If either of addr_src or addr_dest is stack pointer, we don't do the 27886bc7103cSJiong Wang * CPP optimization as stack is modelled by registers on NFP. 27896bc7103cSJiong Wang */ 27906bc7103cSJiong Wang static bool 27916bc7103cSJiong Wang curr_pair_is_memcpy(struct nfp_insn_meta *ld_meta, 27926bc7103cSJiong Wang struct nfp_insn_meta *st_meta) 27936bc7103cSJiong Wang { 27946bc7103cSJiong Wang struct bpf_insn *ld = &ld_meta->insn; 27956bc7103cSJiong Wang struct bpf_insn *st = &st_meta->insn; 27966bc7103cSJiong Wang 27976bc7103cSJiong Wang if (!is_mbpf_load(ld_meta) || !is_mbpf_store(st_meta)) 27986bc7103cSJiong Wang return false; 27996bc7103cSJiong Wang 28006bc7103cSJiong Wang if (ld_meta->ptr.type != PTR_TO_PACKET) 28016bc7103cSJiong Wang return false; 28026bc7103cSJiong Wang 28036bc7103cSJiong Wang if (st_meta->ptr.type != PTR_TO_PACKET) 28046bc7103cSJiong Wang return false; 28056bc7103cSJiong Wang 28066bc7103cSJiong Wang if (BPF_SIZE(ld->code) != BPF_SIZE(st->code)) 28076bc7103cSJiong Wang return false; 28086bc7103cSJiong Wang 28096bc7103cSJiong Wang if (ld->dst_reg != st->src_reg) 28106bc7103cSJiong Wang return false; 28116bc7103cSJiong Wang 28126bc7103cSJiong Wang /* There is jump to the store insn in this pair. */ 28136bc7103cSJiong Wang if (st_meta->flags & FLAG_INSN_IS_JUMP_DST) 28146bc7103cSJiong Wang return false; 28156bc7103cSJiong Wang 28166bc7103cSJiong Wang return true; 28176bc7103cSJiong Wang } 28186bc7103cSJiong Wang 28196bc7103cSJiong Wang /* Currently, we only support chaining load/store pairs if: 28206bc7103cSJiong Wang * 28216bc7103cSJiong Wang * - Their address base registers are the same. 28226bc7103cSJiong Wang * - Their address offsets are in the same order. 28236bc7103cSJiong Wang * - They operate at the same memory width. 28246bc7103cSJiong Wang * - There is no jump into the middle of them. 28256bc7103cSJiong Wang */ 28266bc7103cSJiong Wang static bool 28276bc7103cSJiong Wang curr_pair_chain_with_previous(struct nfp_insn_meta *ld_meta, 28286bc7103cSJiong Wang struct nfp_insn_meta *st_meta, 28296bc7103cSJiong Wang struct bpf_insn *prev_ld, 28306bc7103cSJiong Wang struct bpf_insn *prev_st) 28316bc7103cSJiong Wang { 28326bc7103cSJiong Wang u8 prev_size, curr_size, prev_ld_base, prev_st_base, prev_ld_dst; 28336bc7103cSJiong Wang struct bpf_insn *ld = &ld_meta->insn; 28346bc7103cSJiong Wang struct bpf_insn *st = &st_meta->insn; 28356bc7103cSJiong Wang s16 prev_ld_off, prev_st_off; 28366bc7103cSJiong Wang 28376bc7103cSJiong Wang /* This pair is the start pair. */ 28386bc7103cSJiong Wang if (!prev_ld) 28396bc7103cSJiong Wang return true; 28406bc7103cSJiong Wang 28416bc7103cSJiong Wang prev_size = BPF_LDST_BYTES(prev_ld); 28426bc7103cSJiong Wang curr_size = BPF_LDST_BYTES(ld); 28436bc7103cSJiong Wang prev_ld_base = prev_ld->src_reg; 28446bc7103cSJiong Wang prev_st_base = prev_st->dst_reg; 28456bc7103cSJiong Wang prev_ld_dst = prev_ld->dst_reg; 28466bc7103cSJiong Wang prev_ld_off = prev_ld->off; 28476bc7103cSJiong Wang prev_st_off = prev_st->off; 28486bc7103cSJiong Wang 28496bc7103cSJiong Wang if (ld->dst_reg != prev_ld_dst) 28506bc7103cSJiong Wang return false; 28516bc7103cSJiong Wang 28526bc7103cSJiong Wang if (ld->src_reg != prev_ld_base || st->dst_reg != prev_st_base) 28536bc7103cSJiong Wang return false; 28546bc7103cSJiong Wang 28556bc7103cSJiong Wang if (curr_size != prev_size) 28566bc7103cSJiong Wang return false; 28576bc7103cSJiong Wang 28586bc7103cSJiong Wang /* There is jump to the head of this pair. */ 28596bc7103cSJiong Wang if (ld_meta->flags & FLAG_INSN_IS_JUMP_DST) 28606bc7103cSJiong Wang return false; 28616bc7103cSJiong Wang 28626bc7103cSJiong Wang /* Both in ascending order. */ 28636bc7103cSJiong Wang if (prev_ld_off + prev_size == ld->off && 28646bc7103cSJiong Wang prev_st_off + prev_size == st->off) 28656bc7103cSJiong Wang return true; 28666bc7103cSJiong Wang 28676bc7103cSJiong Wang /* Both in descending order. */ 28686bc7103cSJiong Wang if (ld->off + curr_size == prev_ld_off && 28696bc7103cSJiong Wang st->off + curr_size == prev_st_off) 28706bc7103cSJiong Wang return true; 28716bc7103cSJiong Wang 28726bc7103cSJiong Wang return false; 28736bc7103cSJiong Wang } 28746bc7103cSJiong Wang 28756bc7103cSJiong Wang /* Return TRUE if cross memory access happens. Cross memory access means 28766bc7103cSJiong Wang * store area is overlapping with load area that a later load might load 28776bc7103cSJiong Wang * the value from previous store, for this case we can't treat the sequence 28786bc7103cSJiong Wang * as an memory copy. 28796bc7103cSJiong Wang */ 28806bc7103cSJiong Wang static bool 28816bc7103cSJiong Wang cross_mem_access(struct bpf_insn *ld, struct nfp_insn_meta *head_ld_meta, 28826bc7103cSJiong Wang struct nfp_insn_meta *head_st_meta) 28836bc7103cSJiong Wang { 28846bc7103cSJiong Wang s16 head_ld_off, head_st_off, ld_off; 28856bc7103cSJiong Wang 28866bc7103cSJiong Wang /* Different pointer types does not overlap. */ 28876bc7103cSJiong Wang if (head_ld_meta->ptr.type != head_st_meta->ptr.type) 28886bc7103cSJiong Wang return false; 28896bc7103cSJiong Wang 28906bc7103cSJiong Wang /* load and store are both PTR_TO_PACKET, check ID info. */ 28916bc7103cSJiong Wang if (head_ld_meta->ptr.id != head_st_meta->ptr.id) 28926bc7103cSJiong Wang return true; 28936bc7103cSJiong Wang 28946bc7103cSJiong Wang /* Canonicalize the offsets. Turn all of them against the original 28956bc7103cSJiong Wang * base register. 28966bc7103cSJiong Wang */ 28976bc7103cSJiong Wang head_ld_off = head_ld_meta->insn.off + head_ld_meta->ptr.off; 28986bc7103cSJiong Wang head_st_off = head_st_meta->insn.off + head_st_meta->ptr.off; 28996bc7103cSJiong Wang ld_off = ld->off + head_ld_meta->ptr.off; 29006bc7103cSJiong Wang 29016bc7103cSJiong Wang /* Ascending order cross. */ 29026bc7103cSJiong Wang if (ld_off > head_ld_off && 29036bc7103cSJiong Wang head_ld_off < head_st_off && ld_off >= head_st_off) 29046bc7103cSJiong Wang return true; 29056bc7103cSJiong Wang 29066bc7103cSJiong Wang /* Descending order cross. */ 29076bc7103cSJiong Wang if (ld_off < head_ld_off && 29086bc7103cSJiong Wang head_ld_off > head_st_off && ld_off <= head_st_off) 29096bc7103cSJiong Wang return true; 29106bc7103cSJiong Wang 29116bc7103cSJiong Wang return false; 29126bc7103cSJiong Wang } 29136bc7103cSJiong Wang 29146bc7103cSJiong Wang /* This pass try to identify the following instructoin sequences. 29156bc7103cSJiong Wang * 29166bc7103cSJiong Wang * load R, [regA + offA] 29176bc7103cSJiong Wang * store [regB + offB], R 29186bc7103cSJiong Wang * load R, [regA + offA + const_imm_A] 29196bc7103cSJiong Wang * store [regB + offB + const_imm_A], R 29206bc7103cSJiong Wang * load R, [regA + offA + 2 * const_imm_A] 29216bc7103cSJiong Wang * store [regB + offB + 2 * const_imm_A], R 29226bc7103cSJiong Wang * ... 29236bc7103cSJiong Wang * 29246bc7103cSJiong Wang * Above sequence is typically generated by compiler when lowering 29256bc7103cSJiong Wang * memcpy. NFP prefer using CPP instructions to accelerate it. 29266bc7103cSJiong Wang */ 29276bc7103cSJiong Wang static void nfp_bpf_opt_ldst_gather(struct nfp_prog *nfp_prog) 29286bc7103cSJiong Wang { 29296bc7103cSJiong Wang struct nfp_insn_meta *head_ld_meta = NULL; 29306bc7103cSJiong Wang struct nfp_insn_meta *head_st_meta = NULL; 29316bc7103cSJiong Wang struct nfp_insn_meta *meta1, *meta2; 29326bc7103cSJiong Wang struct bpf_insn *prev_ld = NULL; 29336bc7103cSJiong Wang struct bpf_insn *prev_st = NULL; 29346bc7103cSJiong Wang u8 count = 0; 29356bc7103cSJiong Wang 29366bc7103cSJiong Wang nfp_for_each_insn_walk2(nfp_prog, meta1, meta2) { 29376bc7103cSJiong Wang struct bpf_insn *ld = &meta1->insn; 29386bc7103cSJiong Wang struct bpf_insn *st = &meta2->insn; 29396bc7103cSJiong Wang 29406bc7103cSJiong Wang /* Reset record status if any of the following if true: 29416bc7103cSJiong Wang * - The current insn pair is not load/store. 29426bc7103cSJiong Wang * - The load/store pair doesn't chain with previous one. 29436bc7103cSJiong Wang * - The chained load/store pair crossed with previous pair. 29446bc7103cSJiong Wang * - The chained load/store pair has a total size of memory 29456bc7103cSJiong Wang * copy beyond 128 bytes which is the maximum length a 29466bc7103cSJiong Wang * single NFP CPP command can transfer. 29476bc7103cSJiong Wang */ 29486bc7103cSJiong Wang if (!curr_pair_is_memcpy(meta1, meta2) || 29496bc7103cSJiong Wang !curr_pair_chain_with_previous(meta1, meta2, prev_ld, 29506bc7103cSJiong Wang prev_st) || 29516bc7103cSJiong Wang (head_ld_meta && (cross_mem_access(ld, head_ld_meta, 29526bc7103cSJiong Wang head_st_meta) || 29536bc7103cSJiong Wang head_ld_meta->ldst_gather_len >= 128))) { 29546bc7103cSJiong Wang if (!count) 29556bc7103cSJiong Wang continue; 29566bc7103cSJiong Wang 29576bc7103cSJiong Wang if (count > 1) { 29586bc7103cSJiong Wang s16 prev_ld_off = prev_ld->off; 29596bc7103cSJiong Wang s16 prev_st_off = prev_st->off; 29606bc7103cSJiong Wang s16 head_ld_off = head_ld_meta->insn.off; 29616bc7103cSJiong Wang 29626bc7103cSJiong Wang if (prev_ld_off < head_ld_off) { 29636bc7103cSJiong Wang head_ld_meta->insn.off = prev_ld_off; 29646bc7103cSJiong Wang head_st_meta->insn.off = prev_st_off; 29656bc7103cSJiong Wang head_ld_meta->ldst_gather_len = 29666bc7103cSJiong Wang -head_ld_meta->ldst_gather_len; 29676bc7103cSJiong Wang } 29686bc7103cSJiong Wang 29696bc7103cSJiong Wang head_ld_meta->paired_st = &head_st_meta->insn; 29706bc7103cSJiong Wang head_st_meta->skip = true; 29716bc7103cSJiong Wang } else { 29726bc7103cSJiong Wang head_ld_meta->ldst_gather_len = 0; 29736bc7103cSJiong Wang } 29746bc7103cSJiong Wang 29756bc7103cSJiong Wang /* If the chain is ended by an load/store pair then this 29766bc7103cSJiong Wang * could serve as the new head of the the next chain. 29776bc7103cSJiong Wang */ 29786bc7103cSJiong Wang if (curr_pair_is_memcpy(meta1, meta2)) { 29796bc7103cSJiong Wang head_ld_meta = meta1; 29806bc7103cSJiong Wang head_st_meta = meta2; 29816bc7103cSJiong Wang head_ld_meta->ldst_gather_len = 29826bc7103cSJiong Wang BPF_LDST_BYTES(ld); 29836bc7103cSJiong Wang meta1 = nfp_meta_next(meta1); 29846bc7103cSJiong Wang meta2 = nfp_meta_next(meta2); 29856bc7103cSJiong Wang prev_ld = ld; 29866bc7103cSJiong Wang prev_st = st; 29876bc7103cSJiong Wang count = 1; 29886bc7103cSJiong Wang } else { 29896bc7103cSJiong Wang head_ld_meta = NULL; 29906bc7103cSJiong Wang head_st_meta = NULL; 29916bc7103cSJiong Wang prev_ld = NULL; 29926bc7103cSJiong Wang prev_st = NULL; 29936bc7103cSJiong Wang count = 0; 29946bc7103cSJiong Wang } 29956bc7103cSJiong Wang 29966bc7103cSJiong Wang continue; 29976bc7103cSJiong Wang } 29986bc7103cSJiong Wang 29996bc7103cSJiong Wang if (!head_ld_meta) { 30006bc7103cSJiong Wang head_ld_meta = meta1; 30016bc7103cSJiong Wang head_st_meta = meta2; 30026bc7103cSJiong Wang } else { 30036bc7103cSJiong Wang meta1->skip = true; 30046bc7103cSJiong Wang meta2->skip = true; 30056bc7103cSJiong Wang } 30066bc7103cSJiong Wang 30076bc7103cSJiong Wang head_ld_meta->ldst_gather_len += BPF_LDST_BYTES(ld); 30086bc7103cSJiong Wang meta1 = nfp_meta_next(meta1); 30096bc7103cSJiong Wang meta2 = nfp_meta_next(meta2); 30106bc7103cSJiong Wang prev_ld = ld; 30116bc7103cSJiong Wang prev_st = st; 30126bc7103cSJiong Wang count++; 30136bc7103cSJiong Wang } 30146bc7103cSJiong Wang } 30156bc7103cSJiong Wang 301687b10ecdSJiong Wang static void nfp_bpf_opt_pkt_cache(struct nfp_prog *nfp_prog) 301787b10ecdSJiong Wang { 301887b10ecdSJiong Wang struct nfp_insn_meta *meta, *range_node = NULL; 301987b10ecdSJiong Wang s16 range_start = 0, range_end = 0; 302087b10ecdSJiong Wang bool cache_avail = false; 302187b10ecdSJiong Wang struct bpf_insn *insn; 302287b10ecdSJiong Wang s32 range_ptr_off = 0; 302387b10ecdSJiong Wang u32 range_ptr_id = 0; 302487b10ecdSJiong Wang 302587b10ecdSJiong Wang list_for_each_entry(meta, &nfp_prog->insns, l) { 302687b10ecdSJiong Wang if (meta->flags & FLAG_INSN_IS_JUMP_DST) 302787b10ecdSJiong Wang cache_avail = false; 302887b10ecdSJiong Wang 302987b10ecdSJiong Wang if (meta->skip) 303087b10ecdSJiong Wang continue; 303187b10ecdSJiong Wang 303287b10ecdSJiong Wang insn = &meta->insn; 303387b10ecdSJiong Wang 303487b10ecdSJiong Wang if (is_mbpf_store_pkt(meta) || 303587b10ecdSJiong Wang insn->code == (BPF_JMP | BPF_CALL) || 303687b10ecdSJiong Wang is_mbpf_classic_store_pkt(meta) || 303787b10ecdSJiong Wang is_mbpf_classic_load(meta)) { 303887b10ecdSJiong Wang cache_avail = false; 303987b10ecdSJiong Wang continue; 304087b10ecdSJiong Wang } 304187b10ecdSJiong Wang 304287b10ecdSJiong Wang if (!is_mbpf_load(meta)) 304387b10ecdSJiong Wang continue; 304487b10ecdSJiong Wang 304587b10ecdSJiong Wang if (meta->ptr.type != PTR_TO_PACKET || meta->ldst_gather_len) { 304687b10ecdSJiong Wang cache_avail = false; 304787b10ecdSJiong Wang continue; 304887b10ecdSJiong Wang } 304987b10ecdSJiong Wang 305087b10ecdSJiong Wang if (!cache_avail) { 305187b10ecdSJiong Wang cache_avail = true; 305287b10ecdSJiong Wang if (range_node) 305387b10ecdSJiong Wang goto end_current_then_start_new; 305487b10ecdSJiong Wang goto start_new; 305587b10ecdSJiong Wang } 305687b10ecdSJiong Wang 305787b10ecdSJiong Wang /* Check ID to make sure two reads share the same 305887b10ecdSJiong Wang * variable offset against PTR_TO_PACKET, and check OFF 305987b10ecdSJiong Wang * to make sure they also share the same constant 306087b10ecdSJiong Wang * offset. 306187b10ecdSJiong Wang * 306287b10ecdSJiong Wang * OFFs don't really need to be the same, because they 306387b10ecdSJiong Wang * are the constant offsets against PTR_TO_PACKET, so 306487b10ecdSJiong Wang * for different OFFs, we could canonicalize them to 306587b10ecdSJiong Wang * offsets against original packet pointer. We don't 306687b10ecdSJiong Wang * support this. 306787b10ecdSJiong Wang */ 306887b10ecdSJiong Wang if (meta->ptr.id == range_ptr_id && 306987b10ecdSJiong Wang meta->ptr.off == range_ptr_off) { 307087b10ecdSJiong Wang s16 new_start = range_start; 307187b10ecdSJiong Wang s16 end, off = insn->off; 307287b10ecdSJiong Wang s16 new_end = range_end; 307387b10ecdSJiong Wang bool changed = false; 307487b10ecdSJiong Wang 307587b10ecdSJiong Wang if (off < range_start) { 307687b10ecdSJiong Wang new_start = off; 307787b10ecdSJiong Wang changed = true; 307887b10ecdSJiong Wang } 307987b10ecdSJiong Wang 308087b10ecdSJiong Wang end = off + BPF_LDST_BYTES(insn); 308187b10ecdSJiong Wang if (end > range_end) { 308287b10ecdSJiong Wang new_end = end; 308387b10ecdSJiong Wang changed = true; 308487b10ecdSJiong Wang } 308587b10ecdSJiong Wang 308687b10ecdSJiong Wang if (!changed) 308787b10ecdSJiong Wang continue; 308887b10ecdSJiong Wang 308987b10ecdSJiong Wang if (new_end - new_start <= 64) { 309087b10ecdSJiong Wang /* Install new range. */ 309187b10ecdSJiong Wang range_start = new_start; 309287b10ecdSJiong Wang range_end = new_end; 309387b10ecdSJiong Wang continue; 309487b10ecdSJiong Wang } 309587b10ecdSJiong Wang } 309687b10ecdSJiong Wang 309787b10ecdSJiong Wang end_current_then_start_new: 309887b10ecdSJiong Wang range_node->pkt_cache.range_start = range_start; 309987b10ecdSJiong Wang range_node->pkt_cache.range_end = range_end; 310087b10ecdSJiong Wang start_new: 310187b10ecdSJiong Wang range_node = meta; 310287b10ecdSJiong Wang range_node->pkt_cache.do_init = true; 310387b10ecdSJiong Wang range_ptr_id = range_node->ptr.id; 310487b10ecdSJiong Wang range_ptr_off = range_node->ptr.off; 310587b10ecdSJiong Wang range_start = insn->off; 310687b10ecdSJiong Wang range_end = insn->off + BPF_LDST_BYTES(insn); 310787b10ecdSJiong Wang } 310887b10ecdSJiong Wang 310987b10ecdSJiong Wang if (range_node) { 311087b10ecdSJiong Wang range_node->pkt_cache.range_start = range_start; 311187b10ecdSJiong Wang range_node->pkt_cache.range_end = range_end; 311287b10ecdSJiong Wang } 311387b10ecdSJiong Wang 311487b10ecdSJiong Wang list_for_each_entry(meta, &nfp_prog->insns, l) { 311587b10ecdSJiong Wang if (meta->skip) 311687b10ecdSJiong Wang continue; 311787b10ecdSJiong Wang 311887b10ecdSJiong Wang if (is_mbpf_load_pkt(meta) && !meta->ldst_gather_len) { 311987b10ecdSJiong Wang if (meta->pkt_cache.do_init) { 312087b10ecdSJiong Wang range_start = meta->pkt_cache.range_start; 312187b10ecdSJiong Wang range_end = meta->pkt_cache.range_end; 312287b10ecdSJiong Wang } else { 312387b10ecdSJiong Wang meta->pkt_cache.range_start = range_start; 312487b10ecdSJiong Wang meta->pkt_cache.range_end = range_end; 312587b10ecdSJiong Wang } 312687b10ecdSJiong Wang } 312787b10ecdSJiong Wang } 312887b10ecdSJiong Wang } 312987b10ecdSJiong Wang 3130d9ae7f2bSJakub Kicinski static int nfp_bpf_optimize(struct nfp_prog *nfp_prog) 3131d9ae7f2bSJakub Kicinski { 3132d9ae7f2bSJakub Kicinski nfp_bpf_opt_reg_init(nfp_prog); 3133d9ae7f2bSJakub Kicinski 3134d9ae7f2bSJakub Kicinski nfp_bpf_opt_ld_mask(nfp_prog); 3135d9ae7f2bSJakub Kicinski nfp_bpf_opt_ld_shift(nfp_prog); 31366bc7103cSJiong Wang nfp_bpf_opt_ldst_gather(nfp_prog); 313787b10ecdSJiong Wang nfp_bpf_opt_pkt_cache(nfp_prog); 3138d9ae7f2bSJakub Kicinski 3139d9ae7f2bSJakub Kicinski return 0; 3140d9ae7f2bSJakub Kicinski } 3141d9ae7f2bSJakub Kicinski 31422314fe9eSJakub Kicinski static int nfp_bpf_ustore_calc(u64 *prog, unsigned int len) 3143fd068ddcSJakub Kicinski { 31442314fe9eSJakub Kicinski __le64 *ustore = (__force __le64 *)prog; 3145fd068ddcSJakub Kicinski int i; 3146fd068ddcSJakub Kicinski 31472314fe9eSJakub Kicinski for (i = 0; i < len; i++) { 3148fd068ddcSJakub Kicinski int err; 3149fd068ddcSJakub Kicinski 31502314fe9eSJakub Kicinski err = nfp_ustore_check_valid_no_ecc(prog[i]); 3151fd068ddcSJakub Kicinski if (err) 3152fd068ddcSJakub Kicinski return err; 3153fd068ddcSJakub Kicinski 31542314fe9eSJakub Kicinski ustore[i] = cpu_to_le64(nfp_ustore_calc_ecc_insn(prog[i])); 3155fd068ddcSJakub Kicinski } 3156fd068ddcSJakub Kicinski 3157fd068ddcSJakub Kicinski return 0; 3158fd068ddcSJakub Kicinski } 3159fd068ddcSJakub Kicinski 316044a12eccSJakub Kicinski static void nfp_bpf_prog_trim(struct nfp_prog *nfp_prog) 316144a12eccSJakub Kicinski { 316244a12eccSJakub Kicinski void *prog; 316344a12eccSJakub Kicinski 316444a12eccSJakub Kicinski prog = kvmalloc_array(nfp_prog->prog_len, sizeof(u64), GFP_KERNEL); 316544a12eccSJakub Kicinski if (!prog) 316644a12eccSJakub Kicinski return; 316744a12eccSJakub Kicinski 316844a12eccSJakub Kicinski nfp_prog->__prog_alloc_len = nfp_prog->prog_len * sizeof(u64); 316944a12eccSJakub Kicinski memcpy(prog, nfp_prog->prog, nfp_prog->__prog_alloc_len); 317044a12eccSJakub Kicinski kvfree(nfp_prog->prog); 317144a12eccSJakub Kicinski nfp_prog->prog = prog; 317244a12eccSJakub Kicinski } 317344a12eccSJakub Kicinski 3174c6c580d7SJakub Kicinski int nfp_bpf_jit(struct nfp_prog *nfp_prog) 3175d9ae7f2bSJakub Kicinski { 3176d9ae7f2bSJakub Kicinski int ret; 3177d9ae7f2bSJakub Kicinski 3178d9ae7f2bSJakub Kicinski ret = nfp_bpf_optimize(nfp_prog); 3179d9ae7f2bSJakub Kicinski if (ret) 31809314c442SJakub Kicinski return ret; 3181d9ae7f2bSJakub Kicinski 3182d9ae7f2bSJakub Kicinski ret = nfp_translate(nfp_prog); 3183d9ae7f2bSJakub Kicinski if (ret) { 3184d9ae7f2bSJakub Kicinski pr_err("Translation failed with error %d (translated: %u)\n", 3185d9ae7f2bSJakub Kicinski ret, nfp_prog->n_translated); 31869314c442SJakub Kicinski return -EINVAL; 3187d9ae7f2bSJakub Kicinski } 3188d9ae7f2bSJakub Kicinski 318944a12eccSJakub Kicinski nfp_bpf_prog_trim(nfp_prog); 319044a12eccSJakub Kicinski 31912314fe9eSJakub Kicinski return ret; 3192d9ae7f2bSJakub Kicinski } 31931549921dSJakub Kicinski 31941549921dSJakub Kicinski void nfp_bpf_jit_prepare(struct nfp_prog *nfp_prog, unsigned int cnt) 31951549921dSJakub Kicinski { 31961549921dSJakub Kicinski struct nfp_insn_meta *meta; 31971549921dSJakub Kicinski 31981549921dSJakub Kicinski /* Another pass to record jump information. */ 31991549921dSJakub Kicinski list_for_each_entry(meta, &nfp_prog->insns, l) { 32001549921dSJakub Kicinski u64 code = meta->insn.code; 32011549921dSJakub Kicinski 32021549921dSJakub Kicinski if (BPF_CLASS(code) == BPF_JMP && BPF_OP(code) != BPF_EXIT && 32031549921dSJakub Kicinski BPF_OP(code) != BPF_CALL) { 32041549921dSJakub Kicinski struct nfp_insn_meta *dst_meta; 32051549921dSJakub Kicinski unsigned short dst_indx; 32061549921dSJakub Kicinski 32071549921dSJakub Kicinski dst_indx = meta->n + 1 + meta->insn.off; 32081549921dSJakub Kicinski dst_meta = nfp_bpf_goto_meta(nfp_prog, meta, dst_indx, 32091549921dSJakub Kicinski cnt); 32101549921dSJakub Kicinski 32111549921dSJakub Kicinski meta->jmp_dst = dst_meta; 32121549921dSJakub Kicinski dst_meta->flags |= FLAG_INSN_IS_JUMP_DST; 32131549921dSJakub Kicinski } 32141549921dSJakub Kicinski } 32151549921dSJakub Kicinski } 32162314fe9eSJakub Kicinski 321774801e50SQuentin Monnet bool nfp_bpf_supported_opcode(u8 code) 321874801e50SQuentin Monnet { 321974801e50SQuentin Monnet return !!instr_cb[code]; 322074801e50SQuentin Monnet } 322174801e50SQuentin Monnet 32222314fe9eSJakub Kicinski void *nfp_bpf_relo_for_vnic(struct nfp_prog *nfp_prog, struct nfp_bpf_vnic *bv) 32232314fe9eSJakub Kicinski { 32242314fe9eSJakub Kicinski unsigned int i; 32252314fe9eSJakub Kicinski u64 *prog; 32262314fe9eSJakub Kicinski int err; 32272314fe9eSJakub Kicinski 32282314fe9eSJakub Kicinski prog = kmemdup(nfp_prog->prog, nfp_prog->prog_len * sizeof(u64), 32292314fe9eSJakub Kicinski GFP_KERNEL); 32302314fe9eSJakub Kicinski if (!prog) 32312314fe9eSJakub Kicinski return ERR_PTR(-ENOMEM); 32322314fe9eSJakub Kicinski 32332314fe9eSJakub Kicinski for (i = 0; i < nfp_prog->prog_len; i++) { 32342314fe9eSJakub Kicinski enum nfp_relo_type special; 323577a3d311SJakub Kicinski u32 val; 32362314fe9eSJakub Kicinski 32372314fe9eSJakub Kicinski special = FIELD_GET(OP_RELO_TYPE, prog[i]); 32382314fe9eSJakub Kicinski switch (special) { 32392314fe9eSJakub Kicinski case RELO_NONE: 32402314fe9eSJakub Kicinski continue; 32412314fe9eSJakub Kicinski case RELO_BR_REL: 32422314fe9eSJakub Kicinski br_add_offset(&prog[i], bv->start_off); 32432314fe9eSJakub Kicinski break; 32442314fe9eSJakub Kicinski case RELO_BR_GO_OUT: 32452314fe9eSJakub Kicinski br_set_offset(&prog[i], 32462314fe9eSJakub Kicinski nfp_prog->tgt_out + bv->start_off); 32472314fe9eSJakub Kicinski break; 32482314fe9eSJakub Kicinski case RELO_BR_GO_ABORT: 32492314fe9eSJakub Kicinski br_set_offset(&prog[i], 32502314fe9eSJakub Kicinski nfp_prog->tgt_abort + bv->start_off); 32512314fe9eSJakub Kicinski break; 32522314fe9eSJakub Kicinski case RELO_BR_NEXT_PKT: 32532314fe9eSJakub Kicinski br_set_offset(&prog[i], bv->tgt_done); 32542314fe9eSJakub Kicinski break; 325577a3d311SJakub Kicinski case RELO_BR_HELPER: 325677a3d311SJakub Kicinski val = br_get_offset(prog[i]); 325777a3d311SJakub Kicinski val -= BR_OFF_RELO; 325877a3d311SJakub Kicinski switch (val) { 325977a3d311SJakub Kicinski case BPF_FUNC_map_lookup_elem: 326077a3d311SJakub Kicinski val = nfp_prog->bpf->helpers.map_lookup; 326177a3d311SJakub Kicinski break; 326244d65a47SJakub Kicinski case BPF_FUNC_map_update_elem: 326344d65a47SJakub Kicinski val = nfp_prog->bpf->helpers.map_update; 326444d65a47SJakub Kicinski break; 3265bfee64deSJakub Kicinski case BPF_FUNC_map_delete_elem: 3266bfee64deSJakub Kicinski val = nfp_prog->bpf->helpers.map_delete; 3267bfee64deSJakub Kicinski break; 326877a3d311SJakub Kicinski default: 326977a3d311SJakub Kicinski pr_err("relocation of unknown helper %d\n", 327077a3d311SJakub Kicinski val); 327177a3d311SJakub Kicinski err = -EINVAL; 327277a3d311SJakub Kicinski goto err_free_prog; 327377a3d311SJakub Kicinski } 327477a3d311SJakub Kicinski br_set_offset(&prog[i], val); 327577a3d311SJakub Kicinski break; 327677a3d311SJakub Kicinski case RELO_IMMED_REL: 327777a3d311SJakub Kicinski immed_add_value(&prog[i], bv->start_off); 327877a3d311SJakub Kicinski break; 32792314fe9eSJakub Kicinski } 32802314fe9eSJakub Kicinski 32812314fe9eSJakub Kicinski prog[i] &= ~OP_RELO_TYPE; 32822314fe9eSJakub Kicinski } 32832314fe9eSJakub Kicinski 32842314fe9eSJakub Kicinski err = nfp_bpf_ustore_calc(prog, nfp_prog->prog_len); 32852314fe9eSJakub Kicinski if (err) 32862314fe9eSJakub Kicinski goto err_free_prog; 32872314fe9eSJakub Kicinski 32882314fe9eSJakub Kicinski return prog; 32892314fe9eSJakub Kicinski 32902314fe9eSJakub Kicinski err_free_prog: 32912314fe9eSJakub Kicinski kfree(prog); 32922314fe9eSJakub Kicinski return ERR_PTR(err); 32932314fe9eSJakub Kicinski } 3294