1d9ae7f2bSJakub Kicinski /* 2d9ae7f2bSJakub Kicinski * Copyright (C) 2016 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 36d9ae7f2bSJakub Kicinski #include <linux/kernel.h> 37d9ae7f2bSJakub Kicinski #include <linux/bpf.h> 38d9ae7f2bSJakub Kicinski #include <linux/filter.h> 39d9ae7f2bSJakub Kicinski #include <linux/pkt_cls.h> 40d9ae7f2bSJakub Kicinski #include <linux/unistd.h> 41d9ae7f2bSJakub Kicinski 42d9ae7f2bSJakub Kicinski #include "main.h" 43d9ae7f2bSJakub Kicinski #include "../nfp_asm.h" 44d9ae7f2bSJakub Kicinski 45d9ae7f2bSJakub Kicinski /* --- NFP prog --- */ 46d9ae7f2bSJakub Kicinski /* Foreach "multiple" entries macros provide pos and next<n> pointers. 47d9ae7f2bSJakub Kicinski * It's safe to modify the next pointers (but not pos). 48d9ae7f2bSJakub Kicinski */ 49d9ae7f2bSJakub Kicinski #define nfp_for_each_insn_walk2(nfp_prog, pos, next) \ 50d9ae7f2bSJakub Kicinski for (pos = list_first_entry(&(nfp_prog)->insns, typeof(*pos), l), \ 51d9ae7f2bSJakub Kicinski next = list_next_entry(pos, l); \ 52d9ae7f2bSJakub Kicinski &(nfp_prog)->insns != &pos->l && \ 53d9ae7f2bSJakub Kicinski &(nfp_prog)->insns != &next->l; \ 54d9ae7f2bSJakub Kicinski pos = nfp_meta_next(pos), \ 55d9ae7f2bSJakub Kicinski next = nfp_meta_next(pos)) 56d9ae7f2bSJakub Kicinski 57d9ae7f2bSJakub Kicinski #define nfp_for_each_insn_walk3(nfp_prog, pos, next, next2) \ 58d9ae7f2bSJakub Kicinski for (pos = list_first_entry(&(nfp_prog)->insns, typeof(*pos), l), \ 59d9ae7f2bSJakub Kicinski next = list_next_entry(pos, l), \ 60d9ae7f2bSJakub Kicinski next2 = list_next_entry(next, l); \ 61d9ae7f2bSJakub Kicinski &(nfp_prog)->insns != &pos->l && \ 62d9ae7f2bSJakub Kicinski &(nfp_prog)->insns != &next->l && \ 63d9ae7f2bSJakub Kicinski &(nfp_prog)->insns != &next2->l; \ 64d9ae7f2bSJakub Kicinski pos = nfp_meta_next(pos), \ 65d9ae7f2bSJakub Kicinski next = nfp_meta_next(pos), \ 66d9ae7f2bSJakub Kicinski next2 = nfp_meta_next(next)) 67d9ae7f2bSJakub Kicinski 68d9ae7f2bSJakub Kicinski static bool 69d9ae7f2bSJakub Kicinski nfp_meta_has_next(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 70d9ae7f2bSJakub Kicinski { 71d9ae7f2bSJakub Kicinski return meta->l.next != &nfp_prog->insns; 72d9ae7f2bSJakub Kicinski } 73d9ae7f2bSJakub Kicinski 74d9ae7f2bSJakub Kicinski static bool 75d9ae7f2bSJakub Kicinski nfp_meta_has_prev(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 76d9ae7f2bSJakub Kicinski { 77d9ae7f2bSJakub Kicinski return meta->l.prev != &nfp_prog->insns; 78d9ae7f2bSJakub Kicinski } 79d9ae7f2bSJakub Kicinski 80d9ae7f2bSJakub Kicinski static void nfp_prog_push(struct nfp_prog *nfp_prog, u64 insn) 81d9ae7f2bSJakub Kicinski { 82d9ae7f2bSJakub Kicinski if (nfp_prog->__prog_alloc_len == nfp_prog->prog_len) { 83d9ae7f2bSJakub Kicinski nfp_prog->error = -ENOSPC; 84d9ae7f2bSJakub Kicinski return; 85d9ae7f2bSJakub Kicinski } 86d9ae7f2bSJakub Kicinski 87d9ae7f2bSJakub Kicinski nfp_prog->prog[nfp_prog->prog_len] = insn; 88d9ae7f2bSJakub Kicinski nfp_prog->prog_len++; 89d9ae7f2bSJakub Kicinski } 90d9ae7f2bSJakub Kicinski 91d9ae7f2bSJakub Kicinski static unsigned int nfp_prog_current_offset(struct nfp_prog *nfp_prog) 92d9ae7f2bSJakub Kicinski { 93d9ae7f2bSJakub Kicinski return nfp_prog->start_off + nfp_prog->prog_len; 94d9ae7f2bSJakub Kicinski } 95d9ae7f2bSJakub Kicinski 96d9ae7f2bSJakub Kicinski static unsigned int 97d9ae7f2bSJakub Kicinski nfp_prog_offset_to_index(struct nfp_prog *nfp_prog, unsigned int offset) 98d9ae7f2bSJakub Kicinski { 99d9ae7f2bSJakub Kicinski return offset - nfp_prog->start_off; 100d9ae7f2bSJakub Kicinski } 101d9ae7f2bSJakub Kicinski 102d9ae7f2bSJakub Kicinski /* --- Emitters --- */ 103d9ae7f2bSJakub Kicinski static void 104d9ae7f2bSJakub Kicinski __emit_cmd(struct nfp_prog *nfp_prog, enum cmd_tgt_map op, 105d9ae7f2bSJakub Kicinski u8 mode, u8 xfer, u8 areg, u8 breg, u8 size, bool sync) 106d9ae7f2bSJakub Kicinski { 107d9ae7f2bSJakub Kicinski enum cmd_ctx_swap ctx; 108d9ae7f2bSJakub Kicinski u64 insn; 109d9ae7f2bSJakub Kicinski 110d9ae7f2bSJakub Kicinski if (sync) 111d9ae7f2bSJakub Kicinski ctx = CMD_CTX_SWAP; 112d9ae7f2bSJakub Kicinski else 113d9ae7f2bSJakub Kicinski ctx = CMD_CTX_NO_SWAP; 114d9ae7f2bSJakub Kicinski 115d9ae7f2bSJakub Kicinski insn = FIELD_PREP(OP_CMD_A_SRC, areg) | 116d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_CTX, ctx) | 117d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_B_SRC, breg) | 118d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_TOKEN, cmd_tgt_act[op].token) | 119d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_XFER, xfer) | 120d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_CNT, size) | 121d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_SIG, sync) | 122d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_TGT_CMD, cmd_tgt_act[op].tgt_cmd) | 123d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_MODE, mode); 124d9ae7f2bSJakub Kicinski 125d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 126d9ae7f2bSJakub Kicinski } 127d9ae7f2bSJakub Kicinski 128d9ae7f2bSJakub Kicinski static void 129d9ae7f2bSJakub Kicinski emit_cmd(struct nfp_prog *nfp_prog, enum cmd_tgt_map op, 130b3f868dfSJakub Kicinski u8 mode, u8 xfer, swreg lreg, swreg rreg, u8 size, bool sync) 131d9ae7f2bSJakub Kicinski { 132d9ae7f2bSJakub Kicinski struct nfp_insn_re_regs reg; 133d9ae7f2bSJakub Kicinski int err; 134d9ae7f2bSJakub Kicinski 135d9ae7f2bSJakub Kicinski err = swreg_to_restricted(reg_none(), lreg, rreg, ®, false); 136d9ae7f2bSJakub Kicinski if (err) { 137d9ae7f2bSJakub Kicinski nfp_prog->error = err; 138d9ae7f2bSJakub Kicinski return; 139d9ae7f2bSJakub Kicinski } 140d9ae7f2bSJakub Kicinski if (reg.swap) { 141d9ae7f2bSJakub Kicinski pr_err("cmd can't swap arguments\n"); 142d9ae7f2bSJakub Kicinski nfp_prog->error = -EFAULT; 143d9ae7f2bSJakub Kicinski return; 144d9ae7f2bSJakub Kicinski } 145995e101fSJakub Kicinski if (reg.dst_lmextn || reg.src_lmextn) { 146995e101fSJakub Kicinski pr_err("cmd can't use LMextn\n"); 147995e101fSJakub Kicinski nfp_prog->error = -EFAULT; 148995e101fSJakub Kicinski return; 149995e101fSJakub Kicinski } 150d9ae7f2bSJakub Kicinski 151d9ae7f2bSJakub Kicinski __emit_cmd(nfp_prog, op, mode, xfer, reg.areg, reg.breg, size, sync); 152d9ae7f2bSJakub Kicinski } 153d9ae7f2bSJakub Kicinski 154d9ae7f2bSJakub Kicinski static void 155d9ae7f2bSJakub Kicinski __emit_br(struct nfp_prog *nfp_prog, enum br_mask mask, enum br_ev_pip ev_pip, 156d9ae7f2bSJakub Kicinski enum br_ctx_signal_state css, u16 addr, u8 defer) 157d9ae7f2bSJakub Kicinski { 158d9ae7f2bSJakub Kicinski u16 addr_lo, addr_hi; 159d9ae7f2bSJakub Kicinski u64 insn; 160d9ae7f2bSJakub Kicinski 161d9ae7f2bSJakub Kicinski addr_lo = addr & (OP_BR_ADDR_LO >> __bf_shf(OP_BR_ADDR_LO)); 162d9ae7f2bSJakub Kicinski addr_hi = addr != addr_lo; 163d9ae7f2bSJakub Kicinski 164d9ae7f2bSJakub Kicinski insn = OP_BR_BASE | 165d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_MASK, mask) | 166d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_EV_PIP, ev_pip) | 167d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_CSS, css) | 168d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_DEFBR, defer) | 169d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_ADDR_LO, addr_lo) | 170d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_ADDR_HI, addr_hi); 171d9ae7f2bSJakub Kicinski 172d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 173d9ae7f2bSJakub Kicinski } 174d9ae7f2bSJakub Kicinski 175d9ae7f2bSJakub Kicinski static void emit_br_def(struct nfp_prog *nfp_prog, u16 addr, u8 defer) 176d9ae7f2bSJakub Kicinski { 177d9ae7f2bSJakub Kicinski if (defer > 2) { 178d9ae7f2bSJakub Kicinski pr_err("BUG: branch defer out of bounds %d\n", defer); 179d9ae7f2bSJakub Kicinski nfp_prog->error = -EFAULT; 180d9ae7f2bSJakub Kicinski return; 181d9ae7f2bSJakub Kicinski } 182d9ae7f2bSJakub Kicinski __emit_br(nfp_prog, BR_UNC, BR_EV_PIP_UNCOND, BR_CSS_NONE, addr, defer); 183d9ae7f2bSJakub Kicinski } 184d9ae7f2bSJakub Kicinski 185d9ae7f2bSJakub Kicinski static void 186d9ae7f2bSJakub Kicinski emit_br(struct nfp_prog *nfp_prog, enum br_mask mask, u16 addr, u8 defer) 187d9ae7f2bSJakub Kicinski { 188d9ae7f2bSJakub Kicinski __emit_br(nfp_prog, mask, 189d9ae7f2bSJakub Kicinski mask != BR_UNC ? BR_EV_PIP_COND : BR_EV_PIP_UNCOND, 190d9ae7f2bSJakub Kicinski BR_CSS_NONE, addr, defer); 191d9ae7f2bSJakub Kicinski } 192d9ae7f2bSJakub Kicinski 193d9ae7f2bSJakub Kicinski static void 194d9ae7f2bSJakub Kicinski __emit_immed(struct nfp_prog *nfp_prog, u16 areg, u16 breg, u16 imm_hi, 195d9ae7f2bSJakub Kicinski enum immed_width width, bool invert, 196995e101fSJakub Kicinski enum immed_shift shift, bool wr_both, 197995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 198d9ae7f2bSJakub Kicinski { 199d9ae7f2bSJakub Kicinski u64 insn; 200d9ae7f2bSJakub Kicinski 201d9ae7f2bSJakub Kicinski insn = OP_IMMED_BASE | 202d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_A_SRC, areg) | 203d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_B_SRC, breg) | 204d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_IMM, imm_hi) | 205d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_WIDTH, width) | 206d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_INV, invert) | 207d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_SHIFT, shift) | 208995e101fSJakub Kicinski FIELD_PREP(OP_IMMED_WR_AB, wr_both) | 209995e101fSJakub Kicinski FIELD_PREP(OP_IMMED_SRC_LMEXTN, src_lmextn) | 210995e101fSJakub Kicinski FIELD_PREP(OP_IMMED_DST_LMEXTN, dst_lmextn); 211d9ae7f2bSJakub Kicinski 212d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 213d9ae7f2bSJakub Kicinski } 214d9ae7f2bSJakub Kicinski 215d9ae7f2bSJakub Kicinski static void 216b3f868dfSJakub Kicinski emit_immed(struct nfp_prog *nfp_prog, swreg dst, u16 imm, 217d9ae7f2bSJakub Kicinski enum immed_width width, bool invert, enum immed_shift shift) 218d9ae7f2bSJakub Kicinski { 219d9ae7f2bSJakub Kicinski struct nfp_insn_ur_regs reg; 220d9ae7f2bSJakub Kicinski int err; 221d9ae7f2bSJakub Kicinski 222b3f868dfSJakub Kicinski if (swreg_type(dst) == NN_REG_IMM) { 223d9ae7f2bSJakub Kicinski nfp_prog->error = -EFAULT; 224d9ae7f2bSJakub Kicinski return; 225d9ae7f2bSJakub Kicinski } 226d9ae7f2bSJakub Kicinski 227d9ae7f2bSJakub Kicinski err = swreg_to_unrestricted(dst, dst, reg_imm(imm & 0xff), ®); 228d9ae7f2bSJakub Kicinski if (err) { 229d9ae7f2bSJakub Kicinski nfp_prog->error = err; 230d9ae7f2bSJakub Kicinski return; 231d9ae7f2bSJakub Kicinski } 232d9ae7f2bSJakub Kicinski 233d9ae7f2bSJakub Kicinski __emit_immed(nfp_prog, reg.areg, reg.breg, imm >> 8, width, 234995e101fSJakub Kicinski invert, shift, reg.wr_both, 235995e101fSJakub Kicinski reg.dst_lmextn, reg.src_lmextn); 236d9ae7f2bSJakub Kicinski } 237d9ae7f2bSJakub Kicinski 238d9ae7f2bSJakub Kicinski static void 239d9ae7f2bSJakub Kicinski __emit_shf(struct nfp_prog *nfp_prog, u16 dst, enum alu_dst_ab dst_ab, 240d9ae7f2bSJakub Kicinski enum shf_sc sc, u8 shift, 241995e101fSJakub Kicinski u16 areg, enum shf_op op, u16 breg, bool i8, bool sw, bool wr_both, 242995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 243d9ae7f2bSJakub Kicinski { 244d9ae7f2bSJakub Kicinski u64 insn; 245d9ae7f2bSJakub Kicinski 246d9ae7f2bSJakub Kicinski if (!FIELD_FIT(OP_SHF_SHIFT, shift)) { 247d9ae7f2bSJakub Kicinski nfp_prog->error = -EFAULT; 248d9ae7f2bSJakub Kicinski return; 249d9ae7f2bSJakub Kicinski } 250d9ae7f2bSJakub Kicinski 251d9ae7f2bSJakub Kicinski if (sc == SHF_SC_L_SHF) 252d9ae7f2bSJakub Kicinski shift = 32 - shift; 253d9ae7f2bSJakub Kicinski 254d9ae7f2bSJakub Kicinski insn = OP_SHF_BASE | 255d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_A_SRC, areg) | 256d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_SC, sc) | 257d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_B_SRC, breg) | 258d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_I8, i8) | 259d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_SW, sw) | 260d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_DST, dst) | 261d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_SHIFT, shift) | 262d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_OP, op) | 263d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_DST_AB, dst_ab) | 264995e101fSJakub Kicinski FIELD_PREP(OP_SHF_WR_AB, wr_both) | 265995e101fSJakub Kicinski FIELD_PREP(OP_SHF_SRC_LMEXTN, src_lmextn) | 266995e101fSJakub Kicinski FIELD_PREP(OP_SHF_DST_LMEXTN, dst_lmextn); 267d9ae7f2bSJakub Kicinski 268d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 269d9ae7f2bSJakub Kicinski } 270d9ae7f2bSJakub Kicinski 271d9ae7f2bSJakub Kicinski static void 272b3f868dfSJakub Kicinski emit_shf(struct nfp_prog *nfp_prog, swreg dst, 273b3f868dfSJakub Kicinski swreg lreg, enum shf_op op, swreg rreg, enum shf_sc sc, u8 shift) 274d9ae7f2bSJakub Kicinski { 275d9ae7f2bSJakub Kicinski struct nfp_insn_re_regs reg; 276d9ae7f2bSJakub Kicinski int err; 277d9ae7f2bSJakub Kicinski 278d9ae7f2bSJakub Kicinski err = swreg_to_restricted(dst, lreg, rreg, ®, true); 279d9ae7f2bSJakub Kicinski if (err) { 280d9ae7f2bSJakub Kicinski nfp_prog->error = err; 281d9ae7f2bSJakub Kicinski return; 282d9ae7f2bSJakub Kicinski } 283d9ae7f2bSJakub Kicinski 284d9ae7f2bSJakub Kicinski __emit_shf(nfp_prog, reg.dst, reg.dst_ab, sc, shift, 285995e101fSJakub Kicinski reg.areg, op, reg.breg, reg.i8, reg.swap, reg.wr_both, 286995e101fSJakub Kicinski reg.dst_lmextn, reg.src_lmextn); 287d9ae7f2bSJakub Kicinski } 288d9ae7f2bSJakub Kicinski 289d9ae7f2bSJakub Kicinski static void 290d9ae7f2bSJakub Kicinski __emit_alu(struct nfp_prog *nfp_prog, u16 dst, enum alu_dst_ab dst_ab, 291995e101fSJakub Kicinski u16 areg, enum alu_op op, u16 breg, bool swap, bool wr_both, 292995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 293d9ae7f2bSJakub Kicinski { 294d9ae7f2bSJakub Kicinski u64 insn; 295d9ae7f2bSJakub Kicinski 296d9ae7f2bSJakub Kicinski insn = OP_ALU_BASE | 297d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_A_SRC, areg) | 298d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_B_SRC, breg) | 299d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_DST, dst) | 300d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_SW, swap) | 301d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_OP, op) | 302d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_DST_AB, dst_ab) | 303995e101fSJakub Kicinski FIELD_PREP(OP_ALU_WR_AB, wr_both) | 304995e101fSJakub Kicinski FIELD_PREP(OP_ALU_SRC_LMEXTN, src_lmextn) | 305995e101fSJakub Kicinski FIELD_PREP(OP_ALU_DST_LMEXTN, dst_lmextn); 306d9ae7f2bSJakub Kicinski 307d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 308d9ae7f2bSJakub Kicinski } 309d9ae7f2bSJakub Kicinski 310d9ae7f2bSJakub Kicinski static void 311b3f868dfSJakub Kicinski emit_alu(struct nfp_prog *nfp_prog, swreg dst, 312b3f868dfSJakub Kicinski swreg lreg, enum alu_op op, swreg rreg) 313d9ae7f2bSJakub Kicinski { 314d9ae7f2bSJakub Kicinski struct nfp_insn_ur_regs reg; 315d9ae7f2bSJakub Kicinski int err; 316d9ae7f2bSJakub Kicinski 317d9ae7f2bSJakub Kicinski err = swreg_to_unrestricted(dst, lreg, rreg, ®); 318d9ae7f2bSJakub Kicinski if (err) { 319d9ae7f2bSJakub Kicinski nfp_prog->error = err; 320d9ae7f2bSJakub Kicinski return; 321d9ae7f2bSJakub Kicinski } 322d9ae7f2bSJakub Kicinski 323d9ae7f2bSJakub Kicinski __emit_alu(nfp_prog, reg.dst, reg.dst_ab, 324995e101fSJakub Kicinski reg.areg, op, reg.breg, reg.swap, reg.wr_both, 325995e101fSJakub Kicinski reg.dst_lmextn, reg.src_lmextn); 326d9ae7f2bSJakub Kicinski } 327d9ae7f2bSJakub Kicinski 328d9ae7f2bSJakub Kicinski static void 329d9ae7f2bSJakub Kicinski __emit_ld_field(struct nfp_prog *nfp_prog, enum shf_sc sc, 330d9ae7f2bSJakub Kicinski u8 areg, u8 bmask, u8 breg, u8 shift, bool imm8, 331995e101fSJakub Kicinski bool zero, bool swap, bool wr_both, 332995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 333d9ae7f2bSJakub Kicinski { 334d9ae7f2bSJakub Kicinski u64 insn; 335d9ae7f2bSJakub Kicinski 336d9ae7f2bSJakub Kicinski insn = OP_LDF_BASE | 337d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_A_SRC, areg) | 338d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_SC, sc) | 339d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_B_SRC, breg) | 340d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_I8, imm8) | 341d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_SW, swap) | 342d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_ZF, zero) | 343d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_BMASK, bmask) | 344d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_SHF, shift) | 345995e101fSJakub Kicinski FIELD_PREP(OP_LDF_WR_AB, wr_both) | 346995e101fSJakub Kicinski FIELD_PREP(OP_LDF_SRC_LMEXTN, src_lmextn) | 347995e101fSJakub Kicinski FIELD_PREP(OP_LDF_DST_LMEXTN, dst_lmextn); 348d9ae7f2bSJakub Kicinski 349d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 350d9ae7f2bSJakub Kicinski } 351d9ae7f2bSJakub Kicinski 352d9ae7f2bSJakub Kicinski static void 353bc8c80a8SJakub Kicinski emit_ld_field_any(struct nfp_prog *nfp_prog, swreg dst, u8 bmask, swreg src, 354bc8c80a8SJakub Kicinski enum shf_sc sc, u8 shift, bool zero) 355d9ae7f2bSJakub Kicinski { 356d9ae7f2bSJakub Kicinski struct nfp_insn_re_regs reg; 357d9ae7f2bSJakub Kicinski int err; 358d9ae7f2bSJakub Kicinski 3592de1be1dSJakub Kicinski /* Note: ld_field is special as it uses one of the src regs as dst */ 3602de1be1dSJakub Kicinski err = swreg_to_restricted(dst, dst, src, ®, true); 361d9ae7f2bSJakub Kicinski if (err) { 362d9ae7f2bSJakub Kicinski nfp_prog->error = err; 363d9ae7f2bSJakub Kicinski return; 364d9ae7f2bSJakub Kicinski } 365d9ae7f2bSJakub Kicinski 366d9ae7f2bSJakub Kicinski __emit_ld_field(nfp_prog, sc, reg.areg, bmask, reg.breg, shift, 367995e101fSJakub Kicinski reg.i8, zero, reg.swap, reg.wr_both, 368995e101fSJakub Kicinski reg.dst_lmextn, reg.src_lmextn); 369d9ae7f2bSJakub Kicinski } 370d9ae7f2bSJakub Kicinski 371d9ae7f2bSJakub Kicinski static void 372b3f868dfSJakub Kicinski emit_ld_field(struct nfp_prog *nfp_prog, swreg dst, u8 bmask, swreg src, 373d9ae7f2bSJakub Kicinski enum shf_sc sc, u8 shift) 374d9ae7f2bSJakub Kicinski { 375bc8c80a8SJakub Kicinski emit_ld_field_any(nfp_prog, dst, bmask, src, sc, shift, false); 376d9ae7f2bSJakub Kicinski } 377d9ae7f2bSJakub Kicinski 3782df03a50SJakub Kicinski static void 3792df03a50SJakub Kicinski __emit_lcsr(struct nfp_prog *nfp_prog, u16 areg, u16 breg, bool wr, u16 addr, 3802df03a50SJakub Kicinski bool dst_lmextn, bool src_lmextn) 3812df03a50SJakub Kicinski { 3822df03a50SJakub Kicinski u64 insn; 3832df03a50SJakub Kicinski 3842df03a50SJakub Kicinski insn = OP_LCSR_BASE | 3852df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_A_SRC, areg) | 3862df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_B_SRC, breg) | 3872df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_WRITE, wr) | 3882df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_ADDR, addr) | 3892df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_SRC_LMEXTN, src_lmextn) | 3902df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_DST_LMEXTN, dst_lmextn); 3912df03a50SJakub Kicinski 3922df03a50SJakub Kicinski nfp_prog_push(nfp_prog, insn); 3932df03a50SJakub Kicinski } 3942df03a50SJakub Kicinski 3952df03a50SJakub Kicinski static void emit_csr_wr(struct nfp_prog *nfp_prog, swreg src, u16 addr) 3962df03a50SJakub Kicinski { 3972df03a50SJakub Kicinski struct nfp_insn_ur_regs reg; 3982df03a50SJakub Kicinski int err; 3992df03a50SJakub Kicinski 4002df03a50SJakub Kicinski /* This instruction takes immeds instead of reg_none() for the ignored 4012df03a50SJakub Kicinski * operand, but we can't encode 2 immeds in one instr with our normal 4022df03a50SJakub Kicinski * swreg infra so if param is an immed, we encode as reg_none() and 4032df03a50SJakub Kicinski * copy the immed to both operands. 4042df03a50SJakub Kicinski */ 4052df03a50SJakub Kicinski if (swreg_type(src) == NN_REG_IMM) { 4062df03a50SJakub Kicinski err = swreg_to_unrestricted(reg_none(), src, reg_none(), ®); 4072df03a50SJakub Kicinski reg.breg = reg.areg; 4082df03a50SJakub Kicinski } else { 4092df03a50SJakub Kicinski err = swreg_to_unrestricted(reg_none(), src, reg_imm(0), ®); 4102df03a50SJakub Kicinski } 4112df03a50SJakub Kicinski if (err) { 4122df03a50SJakub Kicinski nfp_prog->error = err; 4132df03a50SJakub Kicinski return; 4142df03a50SJakub Kicinski } 4152df03a50SJakub Kicinski 4162df03a50SJakub Kicinski __emit_lcsr(nfp_prog, reg.areg, reg.breg, true, addr / 4, 4172df03a50SJakub Kicinski false, reg.src_lmextn); 4182df03a50SJakub Kicinski } 4192df03a50SJakub Kicinski 4201c03e03fSJakub Kicinski static void emit_nop(struct nfp_prog *nfp_prog) 4211c03e03fSJakub Kicinski { 4221c03e03fSJakub Kicinski __emit_immed(nfp_prog, UR_REG_IMM, UR_REG_IMM, 0, 0, 0, 0, 0, 0, 0); 4231c03e03fSJakub Kicinski } 4241c03e03fSJakub Kicinski 425d9ae7f2bSJakub Kicinski /* --- Wrappers --- */ 426d9ae7f2bSJakub Kicinski static bool pack_immed(u32 imm, u16 *val, enum immed_shift *shift) 427d9ae7f2bSJakub Kicinski { 428d9ae7f2bSJakub Kicinski if (!(imm & 0xffff0000)) { 429d9ae7f2bSJakub Kicinski *val = imm; 430d9ae7f2bSJakub Kicinski *shift = IMMED_SHIFT_0B; 431d9ae7f2bSJakub Kicinski } else if (!(imm & 0xff0000ff)) { 432d9ae7f2bSJakub Kicinski *val = imm >> 8; 433d9ae7f2bSJakub Kicinski *shift = IMMED_SHIFT_1B; 434d9ae7f2bSJakub Kicinski } else if (!(imm & 0x0000ffff)) { 435d9ae7f2bSJakub Kicinski *val = imm >> 16; 436d9ae7f2bSJakub Kicinski *shift = IMMED_SHIFT_2B; 437d9ae7f2bSJakub Kicinski } else { 438d9ae7f2bSJakub Kicinski return false; 439d9ae7f2bSJakub Kicinski } 440d9ae7f2bSJakub Kicinski 441d9ae7f2bSJakub Kicinski return true; 442d9ae7f2bSJakub Kicinski } 443d9ae7f2bSJakub Kicinski 444b3f868dfSJakub Kicinski static void wrp_immed(struct nfp_prog *nfp_prog, swreg dst, u32 imm) 445d9ae7f2bSJakub Kicinski { 446d9ae7f2bSJakub Kicinski enum immed_shift shift; 447d9ae7f2bSJakub Kicinski u16 val; 448d9ae7f2bSJakub Kicinski 449d9ae7f2bSJakub Kicinski if (pack_immed(imm, &val, &shift)) { 450d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, val, IMMED_WIDTH_ALL, false, shift); 451d9ae7f2bSJakub Kicinski } else if (pack_immed(~imm, &val, &shift)) { 452d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, val, IMMED_WIDTH_ALL, true, shift); 453d9ae7f2bSJakub Kicinski } else { 454d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, imm & 0xffff, IMMED_WIDTH_ALL, 455d9ae7f2bSJakub Kicinski false, IMMED_SHIFT_0B); 456d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, imm >> 16, IMMED_WIDTH_WORD, 457d9ae7f2bSJakub Kicinski false, IMMED_SHIFT_2B); 458d9ae7f2bSJakub Kicinski } 459d9ae7f2bSJakub Kicinski } 460d9ae7f2bSJakub Kicinski 461d9ae7f2bSJakub Kicinski /* ur_load_imm_any() - encode immediate or use tmp register (unrestricted) 462d9ae7f2bSJakub Kicinski * If the @imm is small enough encode it directly in operand and return 463d9ae7f2bSJakub Kicinski * otherwise load @imm to a spare register and return its encoding. 464d9ae7f2bSJakub Kicinski */ 465b3f868dfSJakub Kicinski static swreg ur_load_imm_any(struct nfp_prog *nfp_prog, u32 imm, swreg tmp_reg) 466d9ae7f2bSJakub Kicinski { 467d9ae7f2bSJakub Kicinski if (FIELD_FIT(UR_REG_IMM_MAX, imm)) 468d9ae7f2bSJakub Kicinski return reg_imm(imm); 469d9ae7f2bSJakub Kicinski 470d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, tmp_reg, imm); 471d9ae7f2bSJakub Kicinski return tmp_reg; 472d9ae7f2bSJakub Kicinski } 473d9ae7f2bSJakub Kicinski 474d9ae7f2bSJakub Kicinski /* re_load_imm_any() - encode immediate or use tmp register (restricted) 475d9ae7f2bSJakub Kicinski * If the @imm is small enough encode it directly in operand and return 476d9ae7f2bSJakub Kicinski * otherwise load @imm to a spare register and return its encoding. 477d9ae7f2bSJakub Kicinski */ 478b3f868dfSJakub Kicinski static swreg re_load_imm_any(struct nfp_prog *nfp_prog, u32 imm, swreg tmp_reg) 479d9ae7f2bSJakub Kicinski { 480d9ae7f2bSJakub Kicinski if (FIELD_FIT(RE_REG_IMM_MAX, imm)) 481d9ae7f2bSJakub Kicinski return reg_imm(imm); 482d9ae7f2bSJakub Kicinski 483d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, tmp_reg, imm); 484d9ae7f2bSJakub Kicinski return tmp_reg; 485d9ae7f2bSJakub Kicinski } 486d9ae7f2bSJakub Kicinski 487ff42bb9fSJakub Kicinski static void wrp_nops(struct nfp_prog *nfp_prog, unsigned int count) 488ff42bb9fSJakub Kicinski { 489ff42bb9fSJakub Kicinski while (count--) 490ff42bb9fSJakub Kicinski emit_nop(nfp_prog); 491ff42bb9fSJakub Kicinski } 492ff42bb9fSJakub Kicinski 493d9ae7f2bSJakub Kicinski static void 494d9ae7f2bSJakub Kicinski wrp_br_special(struct nfp_prog *nfp_prog, enum br_mask mask, 495d9ae7f2bSJakub Kicinski enum br_special special) 496d9ae7f2bSJakub Kicinski { 497d9ae7f2bSJakub Kicinski emit_br(nfp_prog, mask, 0, 0); 498d9ae7f2bSJakub Kicinski 499d9ae7f2bSJakub Kicinski nfp_prog->prog[nfp_prog->prog_len - 1] |= 500d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_SPECIAL, special); 501d9ae7f2bSJakub Kicinski } 502d9ae7f2bSJakub Kicinski 503c000dfb5SJakub Kicinski static void wrp_mov(struct nfp_prog *nfp_prog, swreg dst, swreg src) 504c000dfb5SJakub Kicinski { 505c000dfb5SJakub Kicinski emit_alu(nfp_prog, dst, reg_none(), ALU_OP_NONE, src); 506c000dfb5SJakub Kicinski } 507c000dfb5SJakub Kicinski 508d9ae7f2bSJakub Kicinski static void wrp_reg_mov(struct nfp_prog *nfp_prog, u16 dst, u16 src) 509d9ae7f2bSJakub Kicinski { 510c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_both(dst), reg_b(src)); 511d9ae7f2bSJakub Kicinski } 512d9ae7f2bSJakub Kicinski 513d9ae7f2bSJakub Kicinski static int 5140a793977SJakub Kicinski data_ld(struct nfp_prog *nfp_prog, swreg offset, u8 dst_gpr, int size) 515d9ae7f2bSJakub Kicinski { 516d9ae7f2bSJakub Kicinski unsigned int i; 517d9ae7f2bSJakub Kicinski u16 shift, sz; 518d9ae7f2bSJakub Kicinski 519d9ae7f2bSJakub Kicinski /* We load the value from the address indicated in @offset and then 520d9ae7f2bSJakub Kicinski * shift out the data we don't need. Note: this is big endian! 521d9ae7f2bSJakub Kicinski */ 5220a793977SJakub Kicinski sz = max(size, 4); 523d9ae7f2bSJakub Kicinski shift = size < 4 ? 4 - size : 0; 524d9ae7f2bSJakub Kicinski 5250a793977SJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_READ8, CMD_MODE_32b, 0, 5260a793977SJakub Kicinski pptr_reg(nfp_prog), offset, sz - 1, true); 5270a793977SJakub Kicinski 5280a793977SJakub Kicinski i = 0; 5290a793977SJakub Kicinski if (shift) 5300a793977SJakub Kicinski emit_shf(nfp_prog, reg_both(dst_gpr), reg_none(), SHF_OP_NONE, 5310a793977SJakub Kicinski reg_xfer(0), SHF_SC_R_SHF, shift * 8); 5320a793977SJakub Kicinski else 5330a793977SJakub Kicinski for (; i * 4 < size; i++) 5340a793977SJakub Kicinski wrp_mov(nfp_prog, reg_both(dst_gpr + i), reg_xfer(i)); 5350a793977SJakub Kicinski 5360a793977SJakub Kicinski if (i < 2) 5370a793977SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst_gpr + 1), 0); 5380a793977SJakub Kicinski 5390a793977SJakub Kicinski return 0; 5400a793977SJakub Kicinski } 5410a793977SJakub Kicinski 5420a793977SJakub Kicinski static int 5432ca71441SJakub Kicinski data_ld_host_order(struct nfp_prog *nfp_prog, u8 src_gpr, swreg offset, 5442ca71441SJakub Kicinski u8 dst_gpr, int size) 5452ca71441SJakub Kicinski { 5462ca71441SJakub Kicinski unsigned int i; 5472ca71441SJakub Kicinski u8 mask, sz; 5482ca71441SJakub Kicinski 5492ca71441SJakub Kicinski /* We load the value from the address indicated in @offset and then 5502ca71441SJakub Kicinski * mask out the data we don't need. Note: this is little endian! 5512ca71441SJakub Kicinski */ 5522ca71441SJakub Kicinski sz = max(size, 4); 5532ca71441SJakub Kicinski mask = size < 4 ? GENMASK(size - 1, 0) : 0; 5542ca71441SJakub Kicinski 5552ca71441SJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_READ32_SWAP, CMD_MODE_32b, 0, 5562ca71441SJakub Kicinski reg_a(src_gpr), offset, sz / 4 - 1, true); 5572ca71441SJakub Kicinski 5582ca71441SJakub Kicinski i = 0; 5592ca71441SJakub Kicinski if (mask) 5602ca71441SJakub Kicinski emit_ld_field_any(nfp_prog, reg_both(dst_gpr), mask, 5612ca71441SJakub Kicinski reg_xfer(0), SHF_SC_NONE, 0, true); 5622ca71441SJakub Kicinski else 5632ca71441SJakub Kicinski for (; i * 4 < size; i++) 5642ca71441SJakub Kicinski wrp_mov(nfp_prog, reg_both(dst_gpr + i), reg_xfer(i)); 5652ca71441SJakub Kicinski 5662ca71441SJakub Kicinski if (i < 2) 5672ca71441SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst_gpr + 1), 0); 5682ca71441SJakub Kicinski 5692ca71441SJakub Kicinski return 0; 5702ca71441SJakub Kicinski } 5712ca71441SJakub Kicinski 5722ca71441SJakub Kicinski static int 5730a793977SJakub Kicinski construct_data_ind_ld(struct nfp_prog *nfp_prog, u16 offset, u16 src, u8 size) 5740a793977SJakub Kicinski { 5750a793977SJakub Kicinski swreg tmp_reg; 5760a793977SJakub Kicinski 577d9ae7f2bSJakub Kicinski /* Calculate the true offset (src_reg + imm) */ 578d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, offset, imm_b(nfp_prog)); 5790a793977SJakub Kicinski emit_alu(nfp_prog, imm_both(nfp_prog), reg_a(src), ALU_OP_ADD, tmp_reg); 5800a793977SJakub Kicinski 581d9ae7f2bSJakub Kicinski /* Check packet length (size guaranteed to fit b/c it's u8) */ 582d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_a(nfp_prog), 583d9ae7f2bSJakub Kicinski imm_a(nfp_prog), ALU_OP_ADD, reg_imm(size)); 584d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 58518e53b6cSJakub Kicinski plen_reg(nfp_prog), ALU_OP_SUB, imm_a(nfp_prog)); 586d9ae7f2bSJakub Kicinski wrp_br_special(nfp_prog, BR_BLO, OP_BR_GO_ABORT); 5870a793977SJakub Kicinski 588d9ae7f2bSJakub Kicinski /* Load data */ 5890a793977SJakub Kicinski return data_ld(nfp_prog, imm_b(nfp_prog), 0, size); 590d9ae7f2bSJakub Kicinski } 591d9ae7f2bSJakub Kicinski 592d9ae7f2bSJakub Kicinski static int construct_data_ld(struct nfp_prog *nfp_prog, u16 offset, u8 size) 593d9ae7f2bSJakub Kicinski { 5940a793977SJakub Kicinski swreg tmp_reg; 5950a793977SJakub Kicinski 5960a793977SJakub Kicinski /* Check packet length */ 5970a793977SJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, offset + size, imm_a(nfp_prog)); 5980a793977SJakub Kicinski emit_alu(nfp_prog, reg_none(), plen_reg(nfp_prog), ALU_OP_SUB, tmp_reg); 5990a793977SJakub Kicinski wrp_br_special(nfp_prog, BR_BLO, OP_BR_GO_ABORT); 6000a793977SJakub Kicinski 6010a793977SJakub Kicinski /* Load data */ 6020a793977SJakub Kicinski tmp_reg = re_load_imm_any(nfp_prog, offset, imm_b(nfp_prog)); 6030a793977SJakub Kicinski return data_ld(nfp_prog, tmp_reg, 0, size); 604d9ae7f2bSJakub Kicinski } 605d9ae7f2bSJakub Kicinski 606e663fe38SJakub Kicinski static int 607e663fe38SJakub Kicinski data_stx_host_order(struct nfp_prog *nfp_prog, u8 dst_gpr, swreg offset, 608e663fe38SJakub Kicinski u8 src_gpr, u8 size) 609e663fe38SJakub Kicinski { 610e663fe38SJakub Kicinski unsigned int i; 611e663fe38SJakub Kicinski 612e663fe38SJakub Kicinski for (i = 0; i * 4 < size; i++) 613e663fe38SJakub Kicinski wrp_mov(nfp_prog, reg_xfer(i), reg_a(src_gpr + i)); 614e663fe38SJakub Kicinski 615e663fe38SJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_WRITE8_SWAP, CMD_MODE_32b, 0, 616e663fe38SJakub Kicinski reg_a(dst_gpr), offset, size - 1, true); 617e663fe38SJakub Kicinski 618e663fe38SJakub Kicinski return 0; 619e663fe38SJakub Kicinski } 620e663fe38SJakub Kicinski 621e663fe38SJakub Kicinski static int 622e663fe38SJakub Kicinski data_st_host_order(struct nfp_prog *nfp_prog, u8 dst_gpr, swreg offset, 623e663fe38SJakub Kicinski u64 imm, u8 size) 624e663fe38SJakub Kicinski { 625e663fe38SJakub Kicinski wrp_immed(nfp_prog, reg_xfer(0), imm); 626e663fe38SJakub Kicinski if (size == 8) 627e663fe38SJakub Kicinski wrp_immed(nfp_prog, reg_xfer(1), imm >> 32); 628e663fe38SJakub Kicinski 629e663fe38SJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_WRITE8_SWAP, CMD_MODE_32b, 0, 630e663fe38SJakub Kicinski reg_a(dst_gpr), offset, size - 1, true); 631e663fe38SJakub Kicinski 632e663fe38SJakub Kicinski return 0; 633e663fe38SJakub Kicinski } 634e663fe38SJakub Kicinski 635ee9133a8SJakub Kicinski typedef int 636ee9133a8SJakub Kicinski (*lmem_step)(struct nfp_prog *nfp_prog, u8 gpr, u8 gpr_byte, s32 off, 6372df03a50SJakub Kicinski unsigned int size, bool first, bool new_gpr, bool last, bool lm3, 6382df03a50SJakub Kicinski bool needs_inc); 639a82b23fbSJakub Kicinski 640a82b23fbSJakub Kicinski static int 641a82b23fbSJakub Kicinski wrp_lmem_load(struct nfp_prog *nfp_prog, u8 dst, u8 dst_byte, s32 off, 6422df03a50SJakub Kicinski unsigned int size, bool first, bool new_gpr, bool last, bool lm3, 6432df03a50SJakub Kicinski bool needs_inc) 644a82b23fbSJakub Kicinski { 6452df03a50SJakub Kicinski bool should_inc = needs_inc && new_gpr && !last; 646a82b23fbSJakub Kicinski u32 idx, src_byte; 647a82b23fbSJakub Kicinski enum shf_sc sc; 648a82b23fbSJakub Kicinski swreg reg; 649a82b23fbSJakub Kicinski int shf; 650a82b23fbSJakub Kicinski u8 mask; 651a82b23fbSJakub Kicinski 652a82b23fbSJakub Kicinski if (WARN_ON_ONCE(dst_byte + size > 4 || off % 4 + size > 4)) 653a82b23fbSJakub Kicinski return -EOPNOTSUPP; 654a82b23fbSJakub Kicinski 655a82b23fbSJakub Kicinski idx = off / 4; 656a82b23fbSJakub Kicinski 657a82b23fbSJakub Kicinski /* Move the entire word */ 658a82b23fbSJakub Kicinski if (size == 4) { 6592df03a50SJakub Kicinski wrp_mov(nfp_prog, reg_both(dst), 6602df03a50SJakub Kicinski should_inc ? reg_lm_inc(3) : reg_lm(lm3 ? 3 : 0, idx)); 661a82b23fbSJakub Kicinski return 0; 662a82b23fbSJakub Kicinski } 663a82b23fbSJakub Kicinski 6642df03a50SJakub Kicinski if (WARN_ON_ONCE(lm3 && idx > RE_REG_LM_IDX_MAX)) 6652df03a50SJakub Kicinski return -EOPNOTSUPP; 6662df03a50SJakub Kicinski 667a82b23fbSJakub Kicinski src_byte = off % 4; 668a82b23fbSJakub Kicinski 669a82b23fbSJakub Kicinski mask = (1 << size) - 1; 670a82b23fbSJakub Kicinski mask <<= dst_byte; 671a82b23fbSJakub Kicinski 672a82b23fbSJakub Kicinski if (WARN_ON_ONCE(mask > 0xf)) 673a82b23fbSJakub Kicinski return -EOPNOTSUPP; 674a82b23fbSJakub Kicinski 675a82b23fbSJakub Kicinski shf = abs(src_byte - dst_byte) * 8; 676a82b23fbSJakub Kicinski if (src_byte == dst_byte) { 677a82b23fbSJakub Kicinski sc = SHF_SC_NONE; 678a82b23fbSJakub Kicinski } else if (src_byte < dst_byte) { 679a82b23fbSJakub Kicinski shf = 32 - shf; 680a82b23fbSJakub Kicinski sc = SHF_SC_L_SHF; 681a82b23fbSJakub Kicinski } else { 682a82b23fbSJakub Kicinski sc = SHF_SC_R_SHF; 683a82b23fbSJakub Kicinski } 684a82b23fbSJakub Kicinski 685a82b23fbSJakub Kicinski /* ld_field can address fewer indexes, if offset too large do RMW. 686a82b23fbSJakub Kicinski * Because we RMV twice we waste 2 cycles on unaligned 8 byte writes. 687a82b23fbSJakub Kicinski */ 688a82b23fbSJakub Kicinski if (idx <= RE_REG_LM_IDX_MAX) { 6892df03a50SJakub Kicinski reg = reg_lm(lm3 ? 3 : 0, idx); 690a82b23fbSJakub Kicinski } else { 691a82b23fbSJakub Kicinski reg = imm_a(nfp_prog); 6929a90c83cSJakub Kicinski /* If it's not the first part of the load and we start a new GPR 6939a90c83cSJakub Kicinski * that means we are loading a second part of the LMEM word into 6949a90c83cSJakub Kicinski * a new GPR. IOW we've already looked that LMEM word and 6959a90c83cSJakub Kicinski * therefore it has been loaded into imm_a(). 6969a90c83cSJakub Kicinski */ 6979a90c83cSJakub Kicinski if (first || !new_gpr) 698a82b23fbSJakub Kicinski wrp_mov(nfp_prog, reg, reg_lm(0, idx)); 699a82b23fbSJakub Kicinski } 700a82b23fbSJakub Kicinski 701a82b23fbSJakub Kicinski emit_ld_field_any(nfp_prog, reg_both(dst), mask, reg, sc, shf, new_gpr); 702a82b23fbSJakub Kicinski 7032df03a50SJakub Kicinski if (should_inc) 7042df03a50SJakub Kicinski wrp_mov(nfp_prog, reg_none(), reg_lm_inc(3)); 7052df03a50SJakub Kicinski 706a82b23fbSJakub Kicinski return 0; 707a82b23fbSJakub Kicinski } 708ee9133a8SJakub Kicinski 709ee9133a8SJakub Kicinski static int 710ee9133a8SJakub Kicinski wrp_lmem_store(struct nfp_prog *nfp_prog, u8 src, u8 src_byte, s32 off, 7112df03a50SJakub Kicinski unsigned int size, bool first, bool new_gpr, bool last, bool lm3, 7122df03a50SJakub Kicinski bool needs_inc) 713ee9133a8SJakub Kicinski { 7142df03a50SJakub Kicinski bool should_inc = needs_inc && new_gpr && !last; 715ee9133a8SJakub Kicinski u32 idx, dst_byte; 716ee9133a8SJakub Kicinski enum shf_sc sc; 717ee9133a8SJakub Kicinski swreg reg; 718ee9133a8SJakub Kicinski int shf; 719ee9133a8SJakub Kicinski u8 mask; 720ee9133a8SJakub Kicinski 721ee9133a8SJakub Kicinski if (WARN_ON_ONCE(src_byte + size > 4 || off % 4 + size > 4)) 722ee9133a8SJakub Kicinski return -EOPNOTSUPP; 723ee9133a8SJakub Kicinski 724ee9133a8SJakub Kicinski idx = off / 4; 725ee9133a8SJakub Kicinski 726ee9133a8SJakub Kicinski /* Move the entire word */ 727ee9133a8SJakub Kicinski if (size == 4) { 7282df03a50SJakub Kicinski wrp_mov(nfp_prog, 7292df03a50SJakub Kicinski should_inc ? reg_lm_inc(3) : reg_lm(lm3 ? 3 : 0, idx), 7302df03a50SJakub Kicinski reg_b(src)); 731ee9133a8SJakub Kicinski return 0; 732ee9133a8SJakub Kicinski } 733ee9133a8SJakub Kicinski 7342df03a50SJakub Kicinski if (WARN_ON_ONCE(lm3 && idx > RE_REG_LM_IDX_MAX)) 7352df03a50SJakub Kicinski return -EOPNOTSUPP; 7362df03a50SJakub Kicinski 737ee9133a8SJakub Kicinski dst_byte = off % 4; 738ee9133a8SJakub Kicinski 739ee9133a8SJakub Kicinski mask = (1 << size) - 1; 740ee9133a8SJakub Kicinski mask <<= dst_byte; 741ee9133a8SJakub Kicinski 742ee9133a8SJakub Kicinski if (WARN_ON_ONCE(mask > 0xf)) 743ee9133a8SJakub Kicinski return -EOPNOTSUPP; 744ee9133a8SJakub Kicinski 745ee9133a8SJakub Kicinski shf = abs(src_byte - dst_byte) * 8; 746ee9133a8SJakub Kicinski if (src_byte == dst_byte) { 747ee9133a8SJakub Kicinski sc = SHF_SC_NONE; 748ee9133a8SJakub Kicinski } else if (src_byte < dst_byte) { 749ee9133a8SJakub Kicinski shf = 32 - shf; 750ee9133a8SJakub Kicinski sc = SHF_SC_L_SHF; 751ee9133a8SJakub Kicinski } else { 752ee9133a8SJakub Kicinski sc = SHF_SC_R_SHF; 753ee9133a8SJakub Kicinski } 754ee9133a8SJakub Kicinski 755ee9133a8SJakub Kicinski /* ld_field can address fewer indexes, if offset too large do RMW. 756ee9133a8SJakub Kicinski * Because we RMV twice we waste 2 cycles on unaligned 8 byte writes. 757ee9133a8SJakub Kicinski */ 758ee9133a8SJakub Kicinski if (idx <= RE_REG_LM_IDX_MAX) { 7592df03a50SJakub Kicinski reg = reg_lm(lm3 ? 3 : 0, idx); 760ee9133a8SJakub Kicinski } else { 761ee9133a8SJakub Kicinski reg = imm_a(nfp_prog); 7629a90c83cSJakub Kicinski /* Only first and last LMEM locations are going to need RMW, 7639a90c83cSJakub Kicinski * the middle location will be overwritten fully. 7649a90c83cSJakub Kicinski */ 7659a90c83cSJakub Kicinski if (first || last) 766ee9133a8SJakub Kicinski wrp_mov(nfp_prog, reg, reg_lm(0, idx)); 767ee9133a8SJakub Kicinski } 768ee9133a8SJakub Kicinski 769ee9133a8SJakub Kicinski emit_ld_field(nfp_prog, reg, mask, reg_b(src), sc, shf); 770ee9133a8SJakub Kicinski 7719a90c83cSJakub Kicinski if (new_gpr || last) { 772ee9133a8SJakub Kicinski if (idx > RE_REG_LM_IDX_MAX) 773ee9133a8SJakub Kicinski wrp_mov(nfp_prog, reg_lm(0, idx), reg); 7742df03a50SJakub Kicinski if (should_inc) 7752df03a50SJakub Kicinski wrp_mov(nfp_prog, reg_none(), reg_lm_inc(3)); 7769a90c83cSJakub Kicinski } 777ee9133a8SJakub Kicinski 778ee9133a8SJakub Kicinski return 0; 779ee9133a8SJakub Kicinski } 780ee9133a8SJakub Kicinski 781ee9133a8SJakub Kicinski static int 782ee9133a8SJakub Kicinski mem_op_stack(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 783b14157eeSJakub Kicinski unsigned int size, unsigned int ptr_off, u8 gpr, u8 ptr_gpr, 784b14157eeSJakub Kicinski bool clr_gpr, lmem_step step) 785ee9133a8SJakub Kicinski { 786d3488480SJakub Kicinski s32 off = nfp_prog->stack_depth + meta->insn.off + ptr_off; 7879a90c83cSJakub Kicinski bool first = true, last; 7882df03a50SJakub Kicinski bool needs_inc = false; 7892df03a50SJakub Kicinski swreg stack_off_reg; 790a82b23fbSJakub Kicinski u8 prev_gpr = 255; 791ee9133a8SJakub Kicinski u32 gpr_byte = 0; 7922df03a50SJakub Kicinski bool lm3 = true; 793ee9133a8SJakub Kicinski int ret; 794ee9133a8SJakub Kicinski 795b14157eeSJakub Kicinski if (meta->ptr_not_const) { 796b14157eeSJakub Kicinski /* Use of the last encountered ptr_off is OK, they all have 797b14157eeSJakub Kicinski * the same alignment. Depend on low bits of value being 798b14157eeSJakub Kicinski * discarded when written to LMaddr register. 799b14157eeSJakub Kicinski */ 800b14157eeSJakub Kicinski stack_off_reg = ur_load_imm_any(nfp_prog, meta->insn.off, 801b14157eeSJakub Kicinski stack_imm(nfp_prog)); 802b14157eeSJakub Kicinski 803b14157eeSJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), 804b14157eeSJakub Kicinski reg_a(ptr_gpr), ALU_OP_ADD, stack_off_reg); 805b14157eeSJakub Kicinski 806b14157eeSJakub Kicinski needs_inc = true; 807b14157eeSJakub Kicinski } else if (off + size <= 64) { 8082df03a50SJakub Kicinski /* We can reach bottom 64B with LMaddr0 */ 8092df03a50SJakub Kicinski lm3 = false; 8102df03a50SJakub Kicinski } else if (round_down(off, 32) == round_down(off + size - 1, 32)) { 8112df03a50SJakub Kicinski /* We have to set up a new pointer. If we know the offset 8122df03a50SJakub Kicinski * and the entire access falls into a single 32 byte aligned 8132df03a50SJakub Kicinski * window we won't have to increment the LM pointer. 8142df03a50SJakub Kicinski * The 32 byte alignment is imporant because offset is ORed in 8152df03a50SJakub Kicinski * not added when doing *l$indexN[off]. 8162df03a50SJakub Kicinski */ 8172df03a50SJakub Kicinski stack_off_reg = ur_load_imm_any(nfp_prog, round_down(off, 32), 8182df03a50SJakub Kicinski stack_imm(nfp_prog)); 8192df03a50SJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), 8202df03a50SJakub Kicinski stack_reg(nfp_prog), ALU_OP_ADD, stack_off_reg); 8212df03a50SJakub Kicinski 8222df03a50SJakub Kicinski off %= 32; 8232df03a50SJakub Kicinski } else { 8242df03a50SJakub Kicinski stack_off_reg = ur_load_imm_any(nfp_prog, round_down(off, 4), 8252df03a50SJakub Kicinski stack_imm(nfp_prog)); 8262df03a50SJakub Kicinski 8272df03a50SJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), 8282df03a50SJakub Kicinski stack_reg(nfp_prog), ALU_OP_ADD, stack_off_reg); 8292df03a50SJakub Kicinski 8302df03a50SJakub Kicinski needs_inc = true; 8312df03a50SJakub Kicinski } 8322df03a50SJakub Kicinski if (lm3) { 8332df03a50SJakub Kicinski emit_csr_wr(nfp_prog, imm_b(nfp_prog), NFP_CSR_ACT_LM_ADDR3); 8342df03a50SJakub Kicinski /* For size < 4 one slot will be filled by zeroing of upper. */ 8352df03a50SJakub Kicinski wrp_nops(nfp_prog, clr_gpr && size < 8 ? 2 : 3); 8362df03a50SJakub Kicinski } 8372df03a50SJakub Kicinski 838a82b23fbSJakub Kicinski if (clr_gpr && size < 8) 839a82b23fbSJakub Kicinski wrp_immed(nfp_prog, reg_both(gpr + 1), 0); 840a82b23fbSJakub Kicinski 841ee9133a8SJakub Kicinski while (size) { 842ee9133a8SJakub Kicinski u32 slice_end; 843ee9133a8SJakub Kicinski u8 slice_size; 844ee9133a8SJakub Kicinski 845ee9133a8SJakub Kicinski slice_size = min(size, 4 - gpr_byte); 846ee9133a8SJakub Kicinski slice_end = min(off + slice_size, round_up(off + 1, 4)); 847ee9133a8SJakub Kicinski slice_size = slice_end - off; 848ee9133a8SJakub Kicinski 8499a90c83cSJakub Kicinski last = slice_size == size; 8509a90c83cSJakub Kicinski 8512df03a50SJakub Kicinski if (needs_inc) 8522df03a50SJakub Kicinski off %= 4; 8532df03a50SJakub Kicinski 854a82b23fbSJakub Kicinski ret = step(nfp_prog, gpr, gpr_byte, off, slice_size, 8552df03a50SJakub Kicinski first, gpr != prev_gpr, last, lm3, needs_inc); 856ee9133a8SJakub Kicinski if (ret) 857ee9133a8SJakub Kicinski return ret; 858ee9133a8SJakub Kicinski 859a82b23fbSJakub Kicinski prev_gpr = gpr; 8609a90c83cSJakub Kicinski first = false; 8619a90c83cSJakub Kicinski 862ee9133a8SJakub Kicinski gpr_byte += slice_size; 863ee9133a8SJakub Kicinski if (gpr_byte >= 4) { 864ee9133a8SJakub Kicinski gpr_byte -= 4; 865ee9133a8SJakub Kicinski gpr++; 866ee9133a8SJakub Kicinski } 867ee9133a8SJakub Kicinski 868ee9133a8SJakub Kicinski size -= slice_size; 869ee9133a8SJakub Kicinski off += slice_size; 870ee9133a8SJakub Kicinski } 871ee9133a8SJakub Kicinski 872ee9133a8SJakub Kicinski return 0; 873ee9133a8SJakub Kicinski } 874ee9133a8SJakub Kicinski 875d9ae7f2bSJakub Kicinski static void 876d9ae7f2bSJakub Kicinski wrp_alu_imm(struct nfp_prog *nfp_prog, u8 dst, enum alu_op alu_op, u32 imm) 877d9ae7f2bSJakub Kicinski { 878b3f868dfSJakub Kicinski swreg tmp_reg; 879d9ae7f2bSJakub Kicinski 880d9ae7f2bSJakub Kicinski if (alu_op == ALU_OP_AND) { 881d9ae7f2bSJakub Kicinski if (!imm) 882d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), 0); 883d9ae7f2bSJakub Kicinski if (!imm || !~imm) 884d9ae7f2bSJakub Kicinski return; 885d9ae7f2bSJakub Kicinski } 886d9ae7f2bSJakub Kicinski if (alu_op == ALU_OP_OR) { 887d9ae7f2bSJakub Kicinski if (!~imm) 888d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), ~0U); 889d9ae7f2bSJakub Kicinski if (!imm || !~imm) 890d9ae7f2bSJakub Kicinski return; 891d9ae7f2bSJakub Kicinski } 892d9ae7f2bSJakub Kicinski if (alu_op == ALU_OP_XOR) { 893d9ae7f2bSJakub Kicinski if (!~imm) 894d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_none(), 8955d42ced1SJiong Wang ALU_OP_NOT, reg_b(dst)); 896d9ae7f2bSJakub Kicinski if (!imm || !~imm) 897d9ae7f2bSJakub Kicinski return; 898d9ae7f2bSJakub Kicinski } 899d9ae7f2bSJakub Kicinski 900d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm, imm_b(nfp_prog)); 901d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_a(dst), alu_op, tmp_reg); 902d9ae7f2bSJakub Kicinski } 903d9ae7f2bSJakub Kicinski 904d9ae7f2bSJakub Kicinski static int 905d9ae7f2bSJakub Kicinski wrp_alu64_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 906d9ae7f2bSJakub Kicinski enum alu_op alu_op, bool skip) 907d9ae7f2bSJakub Kicinski { 908d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 909d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 910d9ae7f2bSJakub Kicinski 911d9ae7f2bSJakub Kicinski if (skip) { 912d9ae7f2bSJakub Kicinski meta->skip = true; 913d9ae7f2bSJakub Kicinski return 0; 914d9ae7f2bSJakub Kicinski } 915d9ae7f2bSJakub Kicinski 916d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, alu_op, imm & ~0U); 917d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2 + 1, alu_op, imm >> 32); 918d9ae7f2bSJakub Kicinski 919d9ae7f2bSJakub Kicinski return 0; 920d9ae7f2bSJakub Kicinski } 921d9ae7f2bSJakub Kicinski 922d9ae7f2bSJakub Kicinski static int 923d9ae7f2bSJakub Kicinski wrp_alu64_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 924d9ae7f2bSJakub Kicinski enum alu_op alu_op) 925d9ae7f2bSJakub Kicinski { 926d9ae7f2bSJakub Kicinski u8 dst = meta->insn.dst_reg * 2, src = meta->insn.src_reg * 2; 927d9ae7f2bSJakub Kicinski 928d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_a(dst), alu_op, reg_b(src)); 929d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst + 1), 930d9ae7f2bSJakub Kicinski reg_a(dst + 1), alu_op, reg_b(src + 1)); 931d9ae7f2bSJakub Kicinski 932d9ae7f2bSJakub Kicinski return 0; 933d9ae7f2bSJakub Kicinski } 934d9ae7f2bSJakub Kicinski 935d9ae7f2bSJakub Kicinski static int 936d9ae7f2bSJakub Kicinski wrp_alu32_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 937d9ae7f2bSJakub Kicinski enum alu_op alu_op, bool skip) 938d9ae7f2bSJakub Kicinski { 939d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 940d9ae7f2bSJakub Kicinski 941d9ae7f2bSJakub Kicinski if (skip) { 942d9ae7f2bSJakub Kicinski meta->skip = true; 943d9ae7f2bSJakub Kicinski return 0; 944d9ae7f2bSJakub Kicinski } 945d9ae7f2bSJakub Kicinski 946d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, alu_op, insn->imm); 947d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 948d9ae7f2bSJakub Kicinski 949d9ae7f2bSJakub Kicinski return 0; 950d9ae7f2bSJakub Kicinski } 951d9ae7f2bSJakub Kicinski 952d9ae7f2bSJakub Kicinski static int 953d9ae7f2bSJakub Kicinski wrp_alu32_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 954d9ae7f2bSJakub Kicinski enum alu_op alu_op) 955d9ae7f2bSJakub Kicinski { 956d9ae7f2bSJakub Kicinski u8 dst = meta->insn.dst_reg * 2, src = meta->insn.src_reg * 2; 957d9ae7f2bSJakub Kicinski 958d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_a(dst), alu_op, reg_b(src)); 959d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 960d9ae7f2bSJakub Kicinski 961d9ae7f2bSJakub Kicinski return 0; 962d9ae7f2bSJakub Kicinski } 963d9ae7f2bSJakub Kicinski 964d9ae7f2bSJakub Kicinski static void 965d9ae7f2bSJakub Kicinski wrp_test_reg_one(struct nfp_prog *nfp_prog, u8 dst, enum alu_op alu_op, u8 src, 966d9ae7f2bSJakub Kicinski enum br_mask br_mask, u16 off) 967d9ae7f2bSJakub Kicinski { 968d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(dst), alu_op, reg_b(src)); 969d9ae7f2bSJakub Kicinski emit_br(nfp_prog, br_mask, off, 0); 970d9ae7f2bSJakub Kicinski } 971d9ae7f2bSJakub Kicinski 972d9ae7f2bSJakub Kicinski static int 973d9ae7f2bSJakub Kicinski wrp_test_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 974d9ae7f2bSJakub Kicinski enum alu_op alu_op, enum br_mask br_mask) 975d9ae7f2bSJakub Kicinski { 976d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 977d9ae7f2bSJakub Kicinski 978d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 979d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 980d9ae7f2bSJakub Kicinski 981d9ae7f2bSJakub Kicinski wrp_test_reg_one(nfp_prog, insn->dst_reg * 2, alu_op, 982d9ae7f2bSJakub Kicinski insn->src_reg * 2, br_mask, insn->off); 983d9ae7f2bSJakub Kicinski wrp_test_reg_one(nfp_prog, insn->dst_reg * 2 + 1, alu_op, 984d9ae7f2bSJakub Kicinski insn->src_reg * 2 + 1, br_mask, insn->off); 985d9ae7f2bSJakub Kicinski 986d9ae7f2bSJakub Kicinski return 0; 987d9ae7f2bSJakub Kicinski } 988d9ae7f2bSJakub Kicinski 989d9ae7f2bSJakub Kicinski static int 990d9ae7f2bSJakub Kicinski wrp_cmp_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 991d9ae7f2bSJakub Kicinski enum br_mask br_mask, bool swap) 992d9ae7f2bSJakub Kicinski { 993d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 994d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 995d9ae7f2bSJakub Kicinski u8 reg = insn->dst_reg * 2; 996b3f868dfSJakub Kicinski swreg tmp_reg; 997d9ae7f2bSJakub Kicinski 998d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 999d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1000d9ae7f2bSJakub Kicinski 1001d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 1002d9ae7f2bSJakub Kicinski if (!swap) 1003d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(reg), ALU_OP_SUB, tmp_reg); 1004d9ae7f2bSJakub Kicinski else 1005d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), tmp_reg, ALU_OP_SUB, reg_a(reg)); 1006d9ae7f2bSJakub Kicinski 1007d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 1008d9ae7f2bSJakub Kicinski if (!swap) 1009d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1010d9ae7f2bSJakub Kicinski reg_a(reg + 1), ALU_OP_SUB_C, tmp_reg); 1011d9ae7f2bSJakub Kicinski else 1012d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1013d9ae7f2bSJakub Kicinski tmp_reg, ALU_OP_SUB_C, reg_a(reg + 1)); 1014d9ae7f2bSJakub Kicinski 1015d9ae7f2bSJakub Kicinski emit_br(nfp_prog, br_mask, insn->off, 0); 1016d9ae7f2bSJakub Kicinski 1017d9ae7f2bSJakub Kicinski return 0; 1018d9ae7f2bSJakub Kicinski } 1019d9ae7f2bSJakub Kicinski 1020d9ae7f2bSJakub Kicinski static int 1021d9ae7f2bSJakub Kicinski wrp_cmp_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1022d9ae7f2bSJakub Kicinski enum br_mask br_mask, bool swap) 1023d9ae7f2bSJakub Kicinski { 1024d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 102526fa818dSJakub Kicinski u8 areg, breg; 102626fa818dSJakub Kicinski 102726fa818dSJakub Kicinski areg = insn->dst_reg * 2; 102826fa818dSJakub Kicinski breg = insn->src_reg * 2; 1029d9ae7f2bSJakub Kicinski 1030d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 1031d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1032d9ae7f2bSJakub Kicinski 1033d9ae7f2bSJakub Kicinski if (swap) { 1034d9ae7f2bSJakub Kicinski areg ^= breg; 1035d9ae7f2bSJakub Kicinski breg ^= areg; 1036d9ae7f2bSJakub Kicinski areg ^= breg; 1037d9ae7f2bSJakub Kicinski } 1038d9ae7f2bSJakub Kicinski 1039d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(areg), ALU_OP_SUB, reg_b(breg)); 1040d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1041d9ae7f2bSJakub Kicinski reg_a(areg + 1), ALU_OP_SUB_C, reg_b(breg + 1)); 1042d9ae7f2bSJakub Kicinski emit_br(nfp_prog, br_mask, insn->off, 0); 1043d9ae7f2bSJakub Kicinski 1044d9ae7f2bSJakub Kicinski return 0; 1045d9ae7f2bSJakub Kicinski } 1046d9ae7f2bSJakub Kicinski 10473119d1fdSJakub Kicinski static void wrp_end32(struct nfp_prog *nfp_prog, swreg reg_in, u8 gpr_out) 10483119d1fdSJakub Kicinski { 10493119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr_out), 0xf, reg_in, 10503119d1fdSJakub Kicinski SHF_SC_R_ROT, 8); 10513119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr_out), 0x5, reg_a(gpr_out), 10523119d1fdSJakub Kicinski SHF_SC_R_ROT, 16); 10533119d1fdSJakub Kicinski } 10543119d1fdSJakub Kicinski 1055d9ae7f2bSJakub Kicinski /* --- Callbacks --- */ 1056d9ae7f2bSJakub Kicinski static int mov_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1057d9ae7f2bSJakub Kicinski { 1058d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1059b14157eeSJakub Kicinski u8 dst = insn->dst_reg * 2; 1060b14157eeSJakub Kicinski u8 src = insn->src_reg * 2; 1061d9ae7f2bSJakub Kicinski 1062b14157eeSJakub Kicinski if (insn->src_reg == BPF_REG_10) { 1063b14157eeSJakub Kicinski swreg stack_depth_reg; 1064b14157eeSJakub Kicinski 1065b14157eeSJakub Kicinski stack_depth_reg = ur_load_imm_any(nfp_prog, 1066b14157eeSJakub Kicinski nfp_prog->stack_depth, 1067b14157eeSJakub Kicinski stack_imm(nfp_prog)); 1068b14157eeSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), 1069b14157eeSJakub Kicinski stack_reg(nfp_prog), ALU_OP_ADD, stack_depth_reg); 1070b14157eeSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst + 1), 0); 1071b14157eeSJakub Kicinski } else { 1072b14157eeSJakub Kicinski wrp_reg_mov(nfp_prog, dst, src); 1073b14157eeSJakub Kicinski wrp_reg_mov(nfp_prog, dst + 1, src + 1); 1074b14157eeSJakub Kicinski } 1075d9ae7f2bSJakub Kicinski 1076d9ae7f2bSJakub Kicinski return 0; 1077d9ae7f2bSJakub Kicinski } 1078d9ae7f2bSJakub Kicinski 1079d9ae7f2bSJakub Kicinski static int mov_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1080d9ae7f2bSJakub Kicinski { 1081d9ae7f2bSJakub Kicinski u64 imm = meta->insn.imm; /* sign extend */ 1082d9ae7f2bSJakub Kicinski 1083d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2), imm & ~0U); 1084d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), imm >> 32); 1085d9ae7f2bSJakub Kicinski 1086d9ae7f2bSJakub Kicinski return 0; 1087d9ae7f2bSJakub Kicinski } 1088d9ae7f2bSJakub Kicinski 1089d9ae7f2bSJakub Kicinski static int xor_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1090d9ae7f2bSJakub Kicinski { 1091d9ae7f2bSJakub Kicinski return wrp_alu64_reg(nfp_prog, meta, ALU_OP_XOR); 1092d9ae7f2bSJakub Kicinski } 1093d9ae7f2bSJakub Kicinski 1094d9ae7f2bSJakub Kicinski static int xor_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1095d9ae7f2bSJakub Kicinski { 1096d9ae7f2bSJakub Kicinski return wrp_alu64_imm(nfp_prog, meta, ALU_OP_XOR, !meta->insn.imm); 1097d9ae7f2bSJakub Kicinski } 1098d9ae7f2bSJakub Kicinski 1099d9ae7f2bSJakub Kicinski static int and_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1100d9ae7f2bSJakub Kicinski { 1101d9ae7f2bSJakub Kicinski return wrp_alu64_reg(nfp_prog, meta, ALU_OP_AND); 1102d9ae7f2bSJakub Kicinski } 1103d9ae7f2bSJakub Kicinski 1104d9ae7f2bSJakub Kicinski static int and_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1105d9ae7f2bSJakub Kicinski { 1106d9ae7f2bSJakub Kicinski return wrp_alu64_imm(nfp_prog, meta, ALU_OP_AND, !~meta->insn.imm); 1107d9ae7f2bSJakub Kicinski } 1108d9ae7f2bSJakub Kicinski 1109d9ae7f2bSJakub Kicinski static int or_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1110d9ae7f2bSJakub Kicinski { 1111d9ae7f2bSJakub Kicinski return wrp_alu64_reg(nfp_prog, meta, ALU_OP_OR); 1112d9ae7f2bSJakub Kicinski } 1113d9ae7f2bSJakub Kicinski 1114d9ae7f2bSJakub Kicinski static int or_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1115d9ae7f2bSJakub Kicinski { 1116d9ae7f2bSJakub Kicinski return wrp_alu64_imm(nfp_prog, meta, ALU_OP_OR, !meta->insn.imm); 1117d9ae7f2bSJakub Kicinski } 1118d9ae7f2bSJakub Kicinski 1119d9ae7f2bSJakub Kicinski static int add_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1120d9ae7f2bSJakub Kicinski { 1121d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1122d9ae7f2bSJakub Kicinski 1123d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2), 1124d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_ADD, 1125d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2)); 1126d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 1127d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_ADD_C, 1128d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2 + 1)); 1129d9ae7f2bSJakub Kicinski 1130d9ae7f2bSJakub Kicinski return 0; 1131d9ae7f2bSJakub Kicinski } 1132d9ae7f2bSJakub Kicinski 1133d9ae7f2bSJakub Kicinski static int add_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1134d9ae7f2bSJakub Kicinski { 1135d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1136d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1137d9ae7f2bSJakub Kicinski 1138d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, ALU_OP_ADD, imm & ~0U); 1139d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2 + 1, ALU_OP_ADD_C, imm >> 32); 1140d9ae7f2bSJakub Kicinski 1141d9ae7f2bSJakub Kicinski return 0; 1142d9ae7f2bSJakub Kicinski } 1143d9ae7f2bSJakub Kicinski 1144d9ae7f2bSJakub Kicinski static int sub_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1145d9ae7f2bSJakub Kicinski { 1146d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1147d9ae7f2bSJakub Kicinski 1148d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2), 1149d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_SUB, 1150d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2)); 1151d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 1152d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_SUB_C, 1153d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2 + 1)); 1154d9ae7f2bSJakub Kicinski 1155d9ae7f2bSJakub Kicinski return 0; 1156d9ae7f2bSJakub Kicinski } 1157d9ae7f2bSJakub Kicinski 1158d9ae7f2bSJakub Kicinski static int sub_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1159d9ae7f2bSJakub Kicinski { 1160d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1161d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1162d9ae7f2bSJakub Kicinski 1163d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, ALU_OP_SUB, imm & ~0U); 1164d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2 + 1, ALU_OP_SUB_C, imm >> 32); 1165d9ae7f2bSJakub Kicinski 1166d9ae7f2bSJakub Kicinski return 0; 1167d9ae7f2bSJakub Kicinski } 1168d9ae7f2bSJakub Kicinski 1169254ef4d7SJiong Wang static int neg_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1170254ef4d7SJiong Wang { 1171254ef4d7SJiong Wang const struct bpf_insn *insn = &meta->insn; 1172254ef4d7SJiong Wang 1173254ef4d7SJiong Wang emit_alu(nfp_prog, reg_both(insn->dst_reg * 2), reg_imm(0), 1174254ef4d7SJiong Wang ALU_OP_SUB, reg_b(insn->dst_reg * 2)); 1175254ef4d7SJiong Wang emit_alu(nfp_prog, reg_both(insn->dst_reg * 2 + 1), reg_imm(0), 1176254ef4d7SJiong Wang ALU_OP_SUB_C, reg_b(insn->dst_reg * 2 + 1)); 1177254ef4d7SJiong Wang 1178254ef4d7SJiong Wang return 0; 1179254ef4d7SJiong Wang } 1180254ef4d7SJiong Wang 1181d9ae7f2bSJakub Kicinski static int shl_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1182d9ae7f2bSJakub Kicinski { 1183d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 11843cae1319SJakub Kicinski u8 dst = insn->dst_reg * 2; 1185d9ae7f2bSJakub Kicinski 11863cae1319SJakub Kicinski if (insn->imm < 32) { 11873cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst + 1), 11883cae1319SJakub Kicinski reg_a(dst + 1), SHF_OP_NONE, reg_b(dst), 11893cae1319SJakub Kicinski SHF_SC_R_DSHF, 32 - insn->imm); 11903cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst), 11913cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst), 11923cae1319SJakub Kicinski SHF_SC_L_SHF, insn->imm); 11933cae1319SJakub Kicinski } else if (insn->imm == 32) { 11943cae1319SJakub Kicinski wrp_reg_mov(nfp_prog, dst + 1, dst); 11953cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), 0); 11963cae1319SJakub Kicinski } else if (insn->imm > 32) { 11973cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst + 1), 11983cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst), 11993cae1319SJakub Kicinski SHF_SC_L_SHF, insn->imm - 32); 12003cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), 0); 12013cae1319SJakub Kicinski } 1202d9ae7f2bSJakub Kicinski 1203d9ae7f2bSJakub Kicinski return 0; 1204d9ae7f2bSJakub Kicinski } 1205d9ae7f2bSJakub Kicinski 1206d9ae7f2bSJakub Kicinski static int shr_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1207d9ae7f2bSJakub Kicinski { 1208d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 12093cae1319SJakub Kicinski u8 dst = insn->dst_reg * 2; 1210d9ae7f2bSJakub Kicinski 12113cae1319SJakub Kicinski if (insn->imm < 32) { 12123cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst), 12133cae1319SJakub Kicinski reg_a(dst + 1), SHF_OP_NONE, reg_b(dst), 12143cae1319SJakub Kicinski SHF_SC_R_DSHF, insn->imm); 12153cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst + 1), 12163cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst + 1), 12173cae1319SJakub Kicinski SHF_SC_R_SHF, insn->imm); 12183cae1319SJakub Kicinski } else if (insn->imm == 32) { 12193cae1319SJakub Kicinski wrp_reg_mov(nfp_prog, dst, dst + 1); 12203cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst + 1), 0); 12213cae1319SJakub Kicinski } else if (insn->imm > 32) { 12223cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst), 12233cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst + 1), 12243cae1319SJakub Kicinski SHF_SC_R_SHF, insn->imm - 32); 12253cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst + 1), 0); 12263cae1319SJakub Kicinski } 1227d9ae7f2bSJakub Kicinski 1228d9ae7f2bSJakub Kicinski return 0; 1229d9ae7f2bSJakub Kicinski } 1230d9ae7f2bSJakub Kicinski 1231d9ae7f2bSJakub Kicinski static int mov_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1232d9ae7f2bSJakub Kicinski { 1233d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1234d9ae7f2bSJakub Kicinski 1235d9ae7f2bSJakub Kicinski wrp_reg_mov(nfp_prog, insn->dst_reg * 2, insn->src_reg * 2); 1236d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 1237d9ae7f2bSJakub Kicinski 1238d9ae7f2bSJakub Kicinski return 0; 1239d9ae7f2bSJakub Kicinski } 1240d9ae7f2bSJakub Kicinski 1241d9ae7f2bSJakub Kicinski static int mov_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1242d9ae7f2bSJakub Kicinski { 1243d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1244d9ae7f2bSJakub Kicinski 1245d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2), insn->imm); 1246d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 1247d9ae7f2bSJakub Kicinski 1248d9ae7f2bSJakub Kicinski return 0; 1249d9ae7f2bSJakub Kicinski } 1250d9ae7f2bSJakub Kicinski 1251d9ae7f2bSJakub Kicinski static int xor_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1252d9ae7f2bSJakub Kicinski { 1253d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_XOR); 1254d9ae7f2bSJakub Kicinski } 1255d9ae7f2bSJakub Kicinski 1256d9ae7f2bSJakub Kicinski static int xor_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1257d9ae7f2bSJakub Kicinski { 1258d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_XOR, !~meta->insn.imm); 1259d9ae7f2bSJakub Kicinski } 1260d9ae7f2bSJakub Kicinski 1261d9ae7f2bSJakub Kicinski static int and_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1262d9ae7f2bSJakub Kicinski { 1263d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_AND); 1264d9ae7f2bSJakub Kicinski } 1265d9ae7f2bSJakub Kicinski 1266d9ae7f2bSJakub Kicinski static int and_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1267d9ae7f2bSJakub Kicinski { 1268d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_AND, !~meta->insn.imm); 1269d9ae7f2bSJakub Kicinski } 1270d9ae7f2bSJakub Kicinski 1271d9ae7f2bSJakub Kicinski static int or_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1272d9ae7f2bSJakub Kicinski { 1273d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_OR); 1274d9ae7f2bSJakub Kicinski } 1275d9ae7f2bSJakub Kicinski 1276d9ae7f2bSJakub Kicinski static int or_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1277d9ae7f2bSJakub Kicinski { 1278d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_OR, !meta->insn.imm); 1279d9ae7f2bSJakub Kicinski } 1280d9ae7f2bSJakub Kicinski 1281d9ae7f2bSJakub Kicinski static int add_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1282d9ae7f2bSJakub Kicinski { 1283d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_ADD); 1284d9ae7f2bSJakub Kicinski } 1285d9ae7f2bSJakub Kicinski 1286d9ae7f2bSJakub Kicinski static int add_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1287d9ae7f2bSJakub Kicinski { 1288d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_ADD, !meta->insn.imm); 1289d9ae7f2bSJakub Kicinski } 1290d9ae7f2bSJakub Kicinski 1291d9ae7f2bSJakub Kicinski static int sub_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1292d9ae7f2bSJakub Kicinski { 1293d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_SUB); 1294d9ae7f2bSJakub Kicinski } 1295d9ae7f2bSJakub Kicinski 1296d9ae7f2bSJakub Kicinski static int sub_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1297d9ae7f2bSJakub Kicinski { 1298d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_SUB, !meta->insn.imm); 1299d9ae7f2bSJakub Kicinski } 1300d9ae7f2bSJakub Kicinski 1301254ef4d7SJiong Wang static int neg_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1302254ef4d7SJiong Wang { 1303254ef4d7SJiong Wang u8 dst = meta->insn.dst_reg * 2; 1304254ef4d7SJiong Wang 1305254ef4d7SJiong Wang emit_alu(nfp_prog, reg_both(dst), reg_imm(0), ALU_OP_SUB, reg_b(dst)); 1306254ef4d7SJiong Wang wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 1307254ef4d7SJiong Wang 1308254ef4d7SJiong Wang return 0; 1309254ef4d7SJiong Wang } 1310254ef4d7SJiong Wang 1311d9ae7f2bSJakub Kicinski static int shl_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1312d9ae7f2bSJakub Kicinski { 1313d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1314d9ae7f2bSJakub Kicinski 1315d9ae7f2bSJakub Kicinski if (!insn->imm) 1316d9ae7f2bSJakub Kicinski return 1; /* TODO: zero shift means indirect */ 1317d9ae7f2bSJakub Kicinski 1318d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_both(insn->dst_reg * 2), 1319d9ae7f2bSJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(insn->dst_reg * 2), 1320d9ae7f2bSJakub Kicinski SHF_SC_L_SHF, insn->imm); 1321d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 1322d9ae7f2bSJakub Kicinski 1323d9ae7f2bSJakub Kicinski return 0; 1324d9ae7f2bSJakub Kicinski } 1325d9ae7f2bSJakub Kicinski 13263119d1fdSJakub Kicinski static int end_reg32(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 13273119d1fdSJakub Kicinski { 13283119d1fdSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 13293119d1fdSJakub Kicinski u8 gpr = insn->dst_reg * 2; 13303119d1fdSJakub Kicinski 13313119d1fdSJakub Kicinski switch (insn->imm) { 13323119d1fdSJakub Kicinski case 16: 13333119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr), 0x9, reg_b(gpr), 13343119d1fdSJakub Kicinski SHF_SC_R_ROT, 8); 13353119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr), 0xe, reg_a(gpr), 13363119d1fdSJakub Kicinski SHF_SC_R_SHF, 16); 13373119d1fdSJakub Kicinski 13383119d1fdSJakub Kicinski wrp_immed(nfp_prog, reg_both(gpr + 1), 0); 13393119d1fdSJakub Kicinski break; 13403119d1fdSJakub Kicinski case 32: 13413119d1fdSJakub Kicinski wrp_end32(nfp_prog, reg_a(gpr), gpr); 13423119d1fdSJakub Kicinski wrp_immed(nfp_prog, reg_both(gpr + 1), 0); 13433119d1fdSJakub Kicinski break; 13443119d1fdSJakub Kicinski case 64: 13453119d1fdSJakub Kicinski wrp_mov(nfp_prog, imm_a(nfp_prog), reg_b(gpr + 1)); 13463119d1fdSJakub Kicinski 13473119d1fdSJakub Kicinski wrp_end32(nfp_prog, reg_a(gpr), gpr + 1); 13483119d1fdSJakub Kicinski wrp_end32(nfp_prog, imm_a(nfp_prog), gpr); 13493119d1fdSJakub Kicinski break; 13503119d1fdSJakub Kicinski } 13513119d1fdSJakub Kicinski 13523119d1fdSJakub Kicinski return 0; 13533119d1fdSJakub Kicinski } 13543119d1fdSJakub Kicinski 1355d9ae7f2bSJakub Kicinski static int imm_ld8_part2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1356d9ae7f2bSJakub Kicinski { 13579f16c8abSJakub Kicinski struct nfp_insn_meta *prev = nfp_meta_prev(meta); 13589f16c8abSJakub Kicinski u32 imm_lo, imm_hi; 13599f16c8abSJakub Kicinski u8 dst; 13609f16c8abSJakub Kicinski 13619f16c8abSJakub Kicinski dst = prev->insn.dst_reg * 2; 13629f16c8abSJakub Kicinski imm_lo = prev->insn.imm; 13639f16c8abSJakub Kicinski imm_hi = meta->insn.imm; 13649f16c8abSJakub Kicinski 13659f16c8abSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), imm_lo); 13669f16c8abSJakub Kicinski 13679f16c8abSJakub Kicinski /* mov is always 1 insn, load imm may be two, so try to use mov */ 13689f16c8abSJakub Kicinski if (imm_hi == imm_lo) 13699f16c8abSJakub Kicinski wrp_mov(nfp_prog, reg_both(dst + 1), reg_a(dst)); 13709f16c8abSJakub Kicinski else 13719f16c8abSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst + 1), imm_hi); 1372d9ae7f2bSJakub Kicinski 1373d9ae7f2bSJakub Kicinski return 0; 1374d9ae7f2bSJakub Kicinski } 1375d9ae7f2bSJakub Kicinski 1376d9ae7f2bSJakub Kicinski static int imm_ld8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1377d9ae7f2bSJakub Kicinski { 1378d9ae7f2bSJakub Kicinski meta->double_cb = imm_ld8_part2; 1379d9ae7f2bSJakub Kicinski return 0; 1380d9ae7f2bSJakub Kicinski } 1381d9ae7f2bSJakub Kicinski 1382d9ae7f2bSJakub Kicinski static int data_ld1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1383d9ae7f2bSJakub Kicinski { 1384d9ae7f2bSJakub Kicinski return construct_data_ld(nfp_prog, meta->insn.imm, 1); 1385d9ae7f2bSJakub Kicinski } 1386d9ae7f2bSJakub Kicinski 1387d9ae7f2bSJakub Kicinski static int data_ld2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1388d9ae7f2bSJakub Kicinski { 1389d9ae7f2bSJakub Kicinski return construct_data_ld(nfp_prog, meta->insn.imm, 2); 1390d9ae7f2bSJakub Kicinski } 1391d9ae7f2bSJakub Kicinski 1392d9ae7f2bSJakub Kicinski static int data_ld4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1393d9ae7f2bSJakub Kicinski { 1394d9ae7f2bSJakub Kicinski return construct_data_ld(nfp_prog, meta->insn.imm, 4); 1395d9ae7f2bSJakub Kicinski } 1396d9ae7f2bSJakub Kicinski 1397d9ae7f2bSJakub Kicinski static int data_ind_ld1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1398d9ae7f2bSJakub Kicinski { 1399d9ae7f2bSJakub Kicinski return construct_data_ind_ld(nfp_prog, meta->insn.imm, 14000a793977SJakub Kicinski meta->insn.src_reg * 2, 1); 1401d9ae7f2bSJakub Kicinski } 1402d9ae7f2bSJakub Kicinski 1403d9ae7f2bSJakub Kicinski static int data_ind_ld2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1404d9ae7f2bSJakub Kicinski { 1405d9ae7f2bSJakub Kicinski return construct_data_ind_ld(nfp_prog, meta->insn.imm, 14060a793977SJakub Kicinski meta->insn.src_reg * 2, 2); 1407d9ae7f2bSJakub Kicinski } 1408d9ae7f2bSJakub Kicinski 1409d9ae7f2bSJakub Kicinski static int data_ind_ld4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1410d9ae7f2bSJakub Kicinski { 1411d9ae7f2bSJakub Kicinski return construct_data_ind_ld(nfp_prog, meta->insn.imm, 14120a793977SJakub Kicinski meta->insn.src_reg * 2, 4); 1413d9ae7f2bSJakub Kicinski } 1414d9ae7f2bSJakub Kicinski 1415a82b23fbSJakub Kicinski static int 1416a82b23fbSJakub Kicinski mem_ldx_stack(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1417d3488480SJakub Kicinski unsigned int size, unsigned int ptr_off) 1418a82b23fbSJakub Kicinski { 1419d3488480SJakub Kicinski return mem_op_stack(nfp_prog, meta, size, ptr_off, 1420b14157eeSJakub Kicinski meta->insn.dst_reg * 2, meta->insn.src_reg * 2, 1421b14157eeSJakub Kicinski true, wrp_lmem_load); 1422a82b23fbSJakub Kicinski } 1423a82b23fbSJakub Kicinski 1424943c57b9SJakub Kicinski static int mem_ldx_skb(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1425943c57b9SJakub Kicinski u8 size) 1426d9ae7f2bSJakub Kicinski { 1427bfddbc8aSJakub Kicinski swreg dst = reg_both(meta->insn.dst_reg * 2); 1428bfddbc8aSJakub Kicinski 1429943c57b9SJakub Kicinski switch (meta->insn.off) { 1430943c57b9SJakub Kicinski case offsetof(struct sk_buff, len): 1431943c57b9SJakub Kicinski if (size != FIELD_SIZEOF(struct sk_buff, len)) 1432943c57b9SJakub Kicinski return -EOPNOTSUPP; 1433bfddbc8aSJakub Kicinski wrp_mov(nfp_prog, dst, plen_reg(nfp_prog)); 1434bfddbc8aSJakub Kicinski break; 1435bfddbc8aSJakub Kicinski case offsetof(struct sk_buff, data): 1436bfddbc8aSJakub Kicinski if (size != sizeof(void *)) 1437bfddbc8aSJakub Kicinski return -EOPNOTSUPP; 1438bfddbc8aSJakub Kicinski wrp_mov(nfp_prog, dst, pptr_reg(nfp_prog)); 1439bfddbc8aSJakub Kicinski break; 1440bfddbc8aSJakub Kicinski case offsetof(struct sk_buff, cb) + 1441bfddbc8aSJakub Kicinski offsetof(struct bpf_skb_data_end, data_end): 1442bfddbc8aSJakub Kicinski if (size != sizeof(void *)) 1443bfddbc8aSJakub Kicinski return -EOPNOTSUPP; 1444bfddbc8aSJakub Kicinski emit_alu(nfp_prog, dst, 1445bfddbc8aSJakub Kicinski plen_reg(nfp_prog), ALU_OP_ADD, pptr_reg(nfp_prog)); 1446943c57b9SJakub Kicinski break; 1447943c57b9SJakub Kicinski default: 1448d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1449943c57b9SJakub Kicinski } 1450943c57b9SJakub Kicinski 1451943c57b9SJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 1452d9ae7f2bSJakub Kicinski 1453d9ae7f2bSJakub Kicinski return 0; 1454d9ae7f2bSJakub Kicinski } 1455d9ae7f2bSJakub Kicinski 1456943c57b9SJakub Kicinski static int mem_ldx_xdp(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1457943c57b9SJakub Kicinski u8 size) 1458d9ae7f2bSJakub Kicinski { 1459b3f868dfSJakub Kicinski swreg dst = reg_both(meta->insn.dst_reg * 2); 1460d9ae7f2bSJakub Kicinski 1461943c57b9SJakub Kicinski if (size != sizeof(void *)) 1462943c57b9SJakub Kicinski return -EINVAL; 1463d9ae7f2bSJakub Kicinski 1464943c57b9SJakub Kicinski switch (meta->insn.off) { 1465943c57b9SJakub Kicinski case offsetof(struct xdp_buff, data): 1466c000dfb5SJakub Kicinski wrp_mov(nfp_prog, dst, pptr_reg(nfp_prog)); 1467943c57b9SJakub Kicinski break; 1468943c57b9SJakub Kicinski case offsetof(struct xdp_buff, data_end): 1469943c57b9SJakub Kicinski emit_alu(nfp_prog, dst, 1470943c57b9SJakub Kicinski plen_reg(nfp_prog), ALU_OP_ADD, pptr_reg(nfp_prog)); 1471943c57b9SJakub Kicinski break; 1472943c57b9SJakub Kicinski default: 1473943c57b9SJakub Kicinski return -EOPNOTSUPP; 1474943c57b9SJakub Kicinski } 1475d9ae7f2bSJakub Kicinski 1476943c57b9SJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 1477d9ae7f2bSJakub Kicinski 1478d9ae7f2bSJakub Kicinski return 0; 1479d9ae7f2bSJakub Kicinski } 1480d9ae7f2bSJakub Kicinski 14812ca71441SJakub Kicinski static int 14822ca71441SJakub Kicinski mem_ldx_data(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 14832ca71441SJakub Kicinski unsigned int size) 14842ca71441SJakub Kicinski { 14852ca71441SJakub Kicinski swreg tmp_reg; 14862ca71441SJakub Kicinski 14872ca71441SJakub Kicinski tmp_reg = re_load_imm_any(nfp_prog, meta->insn.off, imm_b(nfp_prog)); 14882ca71441SJakub Kicinski 14892ca71441SJakub Kicinski return data_ld_host_order(nfp_prog, meta->insn.src_reg * 2, tmp_reg, 14902ca71441SJakub Kicinski meta->insn.dst_reg * 2, size); 14912ca71441SJakub Kicinski } 14922ca71441SJakub Kicinski 14932ca71441SJakub Kicinski static int 14942ca71441SJakub Kicinski mem_ldx(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 14952ca71441SJakub Kicinski unsigned int size) 14962ca71441SJakub Kicinski { 14972ca71441SJakub Kicinski if (meta->ptr.type == PTR_TO_CTX) { 1498012bb8a8SJakub Kicinski if (nfp_prog->type == BPF_PROG_TYPE_XDP) 14992ca71441SJakub Kicinski return mem_ldx_xdp(nfp_prog, meta, size); 15002ca71441SJakub Kicinski else 15012ca71441SJakub Kicinski return mem_ldx_skb(nfp_prog, meta, size); 15022ca71441SJakub Kicinski } 15032ca71441SJakub Kicinski 15042ca71441SJakub Kicinski if (meta->ptr.type == PTR_TO_PACKET) 15052ca71441SJakub Kicinski return mem_ldx_data(nfp_prog, meta, size); 15062ca71441SJakub Kicinski 1507a82b23fbSJakub Kicinski if (meta->ptr.type == PTR_TO_STACK) 1508d3488480SJakub Kicinski return mem_ldx_stack(nfp_prog, meta, size, 1509d3488480SJakub Kicinski meta->ptr.off + meta->ptr.var_off.value); 1510a82b23fbSJakub Kicinski 15112ca71441SJakub Kicinski return -EOPNOTSUPP; 15122ca71441SJakub Kicinski } 15132ca71441SJakub Kicinski 15142ca71441SJakub Kicinski static int mem_ldx1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 15152ca71441SJakub Kicinski { 15162ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 1); 15172ca71441SJakub Kicinski } 15182ca71441SJakub Kicinski 15192ca71441SJakub Kicinski static int mem_ldx2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 15202ca71441SJakub Kicinski { 15212ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 2); 15222ca71441SJakub Kicinski } 15232ca71441SJakub Kicinski 1524d9ae7f2bSJakub Kicinski static int mem_ldx4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1525d9ae7f2bSJakub Kicinski { 15262ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 4); 15272ca71441SJakub Kicinski } 15282ca71441SJakub Kicinski 15292ca71441SJakub Kicinski static int mem_ldx8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 15302ca71441SJakub Kicinski { 15312ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 8); 1532d9ae7f2bSJakub Kicinski } 1533d9ae7f2bSJakub Kicinski 1534e663fe38SJakub Kicinski static int 1535e663fe38SJakub Kicinski mem_st_data(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1536e663fe38SJakub Kicinski unsigned int size) 1537d9ae7f2bSJakub Kicinski { 1538e663fe38SJakub Kicinski u64 imm = meta->insn.imm; /* sign extend */ 1539e663fe38SJakub Kicinski swreg off_reg; 1540e663fe38SJakub Kicinski 1541e663fe38SJakub Kicinski off_reg = re_load_imm_any(nfp_prog, meta->insn.off, imm_b(nfp_prog)); 1542e663fe38SJakub Kicinski 1543e663fe38SJakub Kicinski return data_st_host_order(nfp_prog, meta->insn.dst_reg * 2, off_reg, 1544e663fe38SJakub Kicinski imm, size); 1545e663fe38SJakub Kicinski } 1546e663fe38SJakub Kicinski 1547e663fe38SJakub Kicinski static int mem_st(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1548e663fe38SJakub Kicinski unsigned int size) 1549e663fe38SJakub Kicinski { 1550e663fe38SJakub Kicinski if (meta->ptr.type == PTR_TO_PACKET) 1551e663fe38SJakub Kicinski return mem_st_data(nfp_prog, meta, size); 1552e663fe38SJakub Kicinski 1553d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1554d9ae7f2bSJakub Kicinski } 1555d9ae7f2bSJakub Kicinski 1556e663fe38SJakub Kicinski static int mem_st1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1557d9ae7f2bSJakub Kicinski { 1558e663fe38SJakub Kicinski return mem_st(nfp_prog, meta, 1); 1559e663fe38SJakub Kicinski } 1560e663fe38SJakub Kicinski 1561e663fe38SJakub Kicinski static int mem_st2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1562e663fe38SJakub Kicinski { 1563e663fe38SJakub Kicinski return mem_st(nfp_prog, meta, 2); 1564e663fe38SJakub Kicinski } 1565e663fe38SJakub Kicinski 1566e663fe38SJakub Kicinski static int mem_st4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1567e663fe38SJakub Kicinski { 1568e663fe38SJakub Kicinski return mem_st(nfp_prog, meta, 4); 1569e663fe38SJakub Kicinski } 1570e663fe38SJakub Kicinski 1571e663fe38SJakub Kicinski static int mem_st8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1572e663fe38SJakub Kicinski { 1573e663fe38SJakub Kicinski return mem_st(nfp_prog, meta, 8); 1574e663fe38SJakub Kicinski } 1575e663fe38SJakub Kicinski 1576e663fe38SJakub Kicinski static int 1577e663fe38SJakub Kicinski mem_stx_data(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1578e663fe38SJakub Kicinski unsigned int size) 1579e663fe38SJakub Kicinski { 1580e663fe38SJakub Kicinski swreg off_reg; 1581e663fe38SJakub Kicinski 1582e663fe38SJakub Kicinski off_reg = re_load_imm_any(nfp_prog, meta->insn.off, imm_b(nfp_prog)); 1583e663fe38SJakub Kicinski 1584e663fe38SJakub Kicinski return data_stx_host_order(nfp_prog, meta->insn.dst_reg * 2, off_reg, 1585e663fe38SJakub Kicinski meta->insn.src_reg * 2, size); 1586e663fe38SJakub Kicinski } 1587e663fe38SJakub Kicinski 1588e663fe38SJakub Kicinski static int 1589ee9133a8SJakub Kicinski mem_stx_stack(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1590d3488480SJakub Kicinski unsigned int size, unsigned int ptr_off) 1591ee9133a8SJakub Kicinski { 1592d3488480SJakub Kicinski return mem_op_stack(nfp_prog, meta, size, ptr_off, 1593b14157eeSJakub Kicinski meta->insn.src_reg * 2, meta->insn.dst_reg * 2, 1594b14157eeSJakub Kicinski false, wrp_lmem_store); 1595ee9133a8SJakub Kicinski } 1596ee9133a8SJakub Kicinski 1597ee9133a8SJakub Kicinski static int 1598e663fe38SJakub Kicinski mem_stx(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1599e663fe38SJakub Kicinski unsigned int size) 1600e663fe38SJakub Kicinski { 1601e663fe38SJakub Kicinski if (meta->ptr.type == PTR_TO_PACKET) 1602e663fe38SJakub Kicinski return mem_stx_data(nfp_prog, meta, size); 1603e663fe38SJakub Kicinski 1604ee9133a8SJakub Kicinski if (meta->ptr.type == PTR_TO_STACK) 1605d3488480SJakub Kicinski return mem_stx_stack(nfp_prog, meta, size, 1606d3488480SJakub Kicinski meta->ptr.off + meta->ptr.var_off.value); 1607ee9133a8SJakub Kicinski 1608d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1609d9ae7f2bSJakub Kicinski } 1610d9ae7f2bSJakub Kicinski 1611e663fe38SJakub Kicinski static int mem_stx1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1612e663fe38SJakub Kicinski { 1613e663fe38SJakub Kicinski return mem_stx(nfp_prog, meta, 1); 1614e663fe38SJakub Kicinski } 1615e663fe38SJakub Kicinski 1616e663fe38SJakub Kicinski static int mem_stx2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1617e663fe38SJakub Kicinski { 1618e663fe38SJakub Kicinski return mem_stx(nfp_prog, meta, 2); 1619e663fe38SJakub Kicinski } 1620e663fe38SJakub Kicinski 1621d9ae7f2bSJakub Kicinski static int mem_stx4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1622d9ae7f2bSJakub Kicinski { 1623e663fe38SJakub Kicinski return mem_stx(nfp_prog, meta, 4); 1624e663fe38SJakub Kicinski } 16252ca71441SJakub Kicinski 1626e663fe38SJakub Kicinski static int mem_stx8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1627e663fe38SJakub Kicinski { 1628e663fe38SJakub Kicinski return mem_stx(nfp_prog, meta, 8); 1629d9ae7f2bSJakub Kicinski } 1630d9ae7f2bSJakub Kicinski 1631d9ae7f2bSJakub Kicinski static int jump(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1632d9ae7f2bSJakub Kicinski { 1633d9ae7f2bSJakub Kicinski if (meta->insn.off < 0) /* TODO */ 1634d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1635d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_UNC, meta->insn.off, 0); 1636d9ae7f2bSJakub Kicinski 1637d9ae7f2bSJakub Kicinski return 0; 1638d9ae7f2bSJakub Kicinski } 1639d9ae7f2bSJakub Kicinski 1640d9ae7f2bSJakub Kicinski static int jeq_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1641d9ae7f2bSJakub Kicinski { 1642d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1643d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1644b3f868dfSJakub Kicinski swreg or1, or2, tmp_reg; 1645b3f868dfSJakub Kicinski 1646b3f868dfSJakub Kicinski or1 = reg_a(insn->dst_reg * 2); 1647b3f868dfSJakub Kicinski or2 = reg_b(insn->dst_reg * 2 + 1); 1648d9ae7f2bSJakub Kicinski 1649d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 1650d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1651d9ae7f2bSJakub Kicinski 1652d9ae7f2bSJakub Kicinski if (imm & ~0U) { 1653d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 1654d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_a(nfp_prog), 1655d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_XOR, tmp_reg); 1656d9ae7f2bSJakub Kicinski or1 = imm_a(nfp_prog); 1657d9ae7f2bSJakub Kicinski } 1658d9ae7f2bSJakub Kicinski 1659d9ae7f2bSJakub Kicinski if (imm >> 32) { 1660d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 1661d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), 1662d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_XOR, tmp_reg); 1663d9ae7f2bSJakub Kicinski or2 = imm_b(nfp_prog); 1664d9ae7f2bSJakub Kicinski } 1665d9ae7f2bSJakub Kicinski 1666d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), or1, ALU_OP_OR, or2); 1667d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BEQ, insn->off, 0); 1668d9ae7f2bSJakub Kicinski 1669d9ae7f2bSJakub Kicinski return 0; 1670d9ae7f2bSJakub Kicinski } 1671d9ae7f2bSJakub Kicinski 1672d9ae7f2bSJakub Kicinski static int jgt_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1673d9ae7f2bSJakub Kicinski { 167426fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BLO, true); 1675d9ae7f2bSJakub Kicinski } 1676d9ae7f2bSJakub Kicinski 1677d9ae7f2bSJakub Kicinski static int jge_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1678d9ae7f2bSJakub Kicinski { 167926fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BHS, false); 1680d9ae7f2bSJakub Kicinski } 1681d9ae7f2bSJakub Kicinski 16825dd294d4SDaniel Borkmann static int jlt_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 16835dd294d4SDaniel Borkmann { 168426fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BLO, false); 16855dd294d4SDaniel Borkmann } 16865dd294d4SDaniel Borkmann 16875dd294d4SDaniel Borkmann static int jle_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 16885dd294d4SDaniel Borkmann { 168926fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BHS, true); 16905dd294d4SDaniel Borkmann } 16915dd294d4SDaniel Borkmann 1692d9ae7f2bSJakub Kicinski static int jset_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1693d9ae7f2bSJakub Kicinski { 1694d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1695d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1696b3f868dfSJakub Kicinski swreg tmp_reg; 1697d9ae7f2bSJakub Kicinski 1698d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 1699d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1700d9ae7f2bSJakub Kicinski 1701d9ae7f2bSJakub Kicinski if (!imm) { 1702d9ae7f2bSJakub Kicinski meta->skip = true; 1703d9ae7f2bSJakub Kicinski return 0; 1704d9ae7f2bSJakub Kicinski } 1705d9ae7f2bSJakub Kicinski 1706d9ae7f2bSJakub Kicinski if (imm & ~0U) { 1707d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 1708d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1709d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_AND, tmp_reg); 1710d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1711d9ae7f2bSJakub Kicinski } 1712d9ae7f2bSJakub Kicinski 1713d9ae7f2bSJakub Kicinski if (imm >> 32) { 1714d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 1715d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1716d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_AND, tmp_reg); 1717d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1718d9ae7f2bSJakub Kicinski } 1719d9ae7f2bSJakub Kicinski 1720d9ae7f2bSJakub Kicinski return 0; 1721d9ae7f2bSJakub Kicinski } 1722d9ae7f2bSJakub Kicinski 1723d9ae7f2bSJakub Kicinski static int jne_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1724d9ae7f2bSJakub Kicinski { 1725d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1726d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1727b3f868dfSJakub Kicinski swreg tmp_reg; 1728d9ae7f2bSJakub Kicinski 1729d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 1730d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1731d9ae7f2bSJakub Kicinski 1732d9ae7f2bSJakub Kicinski if (!imm) { 1733d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(insn->dst_reg * 2), 1734d9ae7f2bSJakub Kicinski ALU_OP_OR, reg_b(insn->dst_reg * 2 + 1)); 1735d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 173682837370SJakub Kicinski return 0; 1737d9ae7f2bSJakub Kicinski } 1738d9ae7f2bSJakub Kicinski 1739d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 1740d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1741d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_XOR, tmp_reg); 1742d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1743d9ae7f2bSJakub Kicinski 1744d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 1745d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1746d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_XOR, tmp_reg); 1747d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1748d9ae7f2bSJakub Kicinski 1749d9ae7f2bSJakub Kicinski return 0; 1750d9ae7f2bSJakub Kicinski } 1751d9ae7f2bSJakub Kicinski 1752d9ae7f2bSJakub Kicinski static int jeq_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1753d9ae7f2bSJakub Kicinski { 1754d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1755d9ae7f2bSJakub Kicinski 1756d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 1757d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1758d9ae7f2bSJakub Kicinski 1759d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_a(nfp_prog), reg_a(insn->dst_reg * 2), 1760d9ae7f2bSJakub Kicinski ALU_OP_XOR, reg_b(insn->src_reg * 2)); 1761d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), reg_a(insn->dst_reg * 2 + 1), 1762d9ae7f2bSJakub Kicinski ALU_OP_XOR, reg_b(insn->src_reg * 2 + 1)); 1763d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1764d9ae7f2bSJakub Kicinski imm_a(nfp_prog), ALU_OP_OR, imm_b(nfp_prog)); 1765d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BEQ, insn->off, 0); 1766d9ae7f2bSJakub Kicinski 1767d9ae7f2bSJakub Kicinski return 0; 1768d9ae7f2bSJakub Kicinski } 1769d9ae7f2bSJakub Kicinski 1770d9ae7f2bSJakub Kicinski static int jgt_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1771d9ae7f2bSJakub Kicinski { 177226fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BLO, true); 1773d9ae7f2bSJakub Kicinski } 1774d9ae7f2bSJakub Kicinski 1775d9ae7f2bSJakub Kicinski static int jge_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1776d9ae7f2bSJakub Kicinski { 177726fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BHS, false); 1778d9ae7f2bSJakub Kicinski } 1779d9ae7f2bSJakub Kicinski 17805dd294d4SDaniel Borkmann static int jlt_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 17815dd294d4SDaniel Borkmann { 178226fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BLO, false); 17835dd294d4SDaniel Borkmann } 17845dd294d4SDaniel Borkmann 17855dd294d4SDaniel Borkmann static int jle_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 17865dd294d4SDaniel Borkmann { 178726fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BHS, true); 17885dd294d4SDaniel Borkmann } 17895dd294d4SDaniel Borkmann 1790d9ae7f2bSJakub Kicinski static int jset_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1791d9ae7f2bSJakub Kicinski { 1792d9ae7f2bSJakub Kicinski return wrp_test_reg(nfp_prog, meta, ALU_OP_AND, BR_BNE); 1793d9ae7f2bSJakub Kicinski } 1794d9ae7f2bSJakub Kicinski 1795d9ae7f2bSJakub Kicinski static int jne_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1796d9ae7f2bSJakub Kicinski { 1797d9ae7f2bSJakub Kicinski return wrp_test_reg(nfp_prog, meta, ALU_OP_XOR, BR_BNE); 1798d9ae7f2bSJakub Kicinski } 1799d9ae7f2bSJakub Kicinski 1800d9ae7f2bSJakub Kicinski static int goto_out(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1801d9ae7f2bSJakub Kicinski { 1802d9ae7f2bSJakub Kicinski wrp_br_special(nfp_prog, BR_UNC, OP_BR_GO_OUT); 1803d9ae7f2bSJakub Kicinski 1804d9ae7f2bSJakub Kicinski return 0; 1805d9ae7f2bSJakub Kicinski } 1806d9ae7f2bSJakub Kicinski 1807d9ae7f2bSJakub Kicinski static const instr_cb_t instr_cb[256] = { 1808d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_MOV | BPF_X] = mov_reg64, 1809d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_MOV | BPF_K] = mov_imm64, 1810d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_XOR | BPF_X] = xor_reg64, 1811d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_XOR | BPF_K] = xor_imm64, 1812d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_AND | BPF_X] = and_reg64, 1813d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_AND | BPF_K] = and_imm64, 1814d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_OR | BPF_X] = or_reg64, 1815d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_OR | BPF_K] = or_imm64, 1816d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_ADD | BPF_X] = add_reg64, 1817d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_ADD | BPF_K] = add_imm64, 1818d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_SUB | BPF_X] = sub_reg64, 1819d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_SUB | BPF_K] = sub_imm64, 1820254ef4d7SJiong Wang [BPF_ALU64 | BPF_NEG] = neg_reg64, 1821d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_LSH | BPF_K] = shl_imm64, 1822d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_RSH | BPF_K] = shr_imm64, 1823d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_MOV | BPF_X] = mov_reg, 1824d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_MOV | BPF_K] = mov_imm, 1825d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_XOR | BPF_X] = xor_reg, 1826d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_XOR | BPF_K] = xor_imm, 1827d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_AND | BPF_X] = and_reg, 1828d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_AND | BPF_K] = and_imm, 1829d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_OR | BPF_X] = or_reg, 1830d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_OR | BPF_K] = or_imm, 1831d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_ADD | BPF_X] = add_reg, 1832d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_ADD | BPF_K] = add_imm, 1833d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_SUB | BPF_X] = sub_reg, 1834d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_SUB | BPF_K] = sub_imm, 1835254ef4d7SJiong Wang [BPF_ALU | BPF_NEG] = neg_reg, 1836d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_LSH | BPF_K] = shl_imm, 18373119d1fdSJakub Kicinski [BPF_ALU | BPF_END | BPF_X] = end_reg32, 1838d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IMM | BPF_DW] = imm_ld8, 1839d9ae7f2bSJakub Kicinski [BPF_LD | BPF_ABS | BPF_B] = data_ld1, 1840d9ae7f2bSJakub Kicinski [BPF_LD | BPF_ABS | BPF_H] = data_ld2, 1841d9ae7f2bSJakub Kicinski [BPF_LD | BPF_ABS | BPF_W] = data_ld4, 1842d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IND | BPF_B] = data_ind_ld1, 1843d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IND | BPF_H] = data_ind_ld2, 1844d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IND | BPF_W] = data_ind_ld4, 18452ca71441SJakub Kicinski [BPF_LDX | BPF_MEM | BPF_B] = mem_ldx1, 18462ca71441SJakub Kicinski [BPF_LDX | BPF_MEM | BPF_H] = mem_ldx2, 1847d9ae7f2bSJakub Kicinski [BPF_LDX | BPF_MEM | BPF_W] = mem_ldx4, 18482ca71441SJakub Kicinski [BPF_LDX | BPF_MEM | BPF_DW] = mem_ldx8, 1849e663fe38SJakub Kicinski [BPF_STX | BPF_MEM | BPF_B] = mem_stx1, 1850e663fe38SJakub Kicinski [BPF_STX | BPF_MEM | BPF_H] = mem_stx2, 1851d9ae7f2bSJakub Kicinski [BPF_STX | BPF_MEM | BPF_W] = mem_stx4, 1852e663fe38SJakub Kicinski [BPF_STX | BPF_MEM | BPF_DW] = mem_stx8, 1853e663fe38SJakub Kicinski [BPF_ST | BPF_MEM | BPF_B] = mem_st1, 1854e663fe38SJakub Kicinski [BPF_ST | BPF_MEM | BPF_H] = mem_st2, 1855e663fe38SJakub Kicinski [BPF_ST | BPF_MEM | BPF_W] = mem_st4, 1856e663fe38SJakub Kicinski [BPF_ST | BPF_MEM | BPF_DW] = mem_st8, 1857d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JA | BPF_K] = jump, 1858d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JEQ | BPF_K] = jeq_imm, 1859d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGT | BPF_K] = jgt_imm, 1860d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGE | BPF_K] = jge_imm, 18615dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLT | BPF_K] = jlt_imm, 18625dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLE | BPF_K] = jle_imm, 1863d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JSET | BPF_K] = jset_imm, 1864d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JNE | BPF_K] = jne_imm, 1865d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JEQ | BPF_X] = jeq_reg, 1866d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGT | BPF_X] = jgt_reg, 1867d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGE | BPF_X] = jge_reg, 18685dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLT | BPF_X] = jlt_reg, 18695dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLE | BPF_X] = jle_reg, 1870d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JSET | BPF_X] = jset_reg, 1871d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JNE | BPF_X] = jne_reg, 1872d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_EXIT] = goto_out, 1873d9ae7f2bSJakub Kicinski }; 1874d9ae7f2bSJakub Kicinski 1875d9ae7f2bSJakub Kicinski /* --- Misc code --- */ 1876d9ae7f2bSJakub Kicinski static void br_set_offset(u64 *instr, u16 offset) 1877d9ae7f2bSJakub Kicinski { 1878d9ae7f2bSJakub Kicinski u16 addr_lo, addr_hi; 1879d9ae7f2bSJakub Kicinski 1880d9ae7f2bSJakub Kicinski addr_lo = offset & (OP_BR_ADDR_LO >> __bf_shf(OP_BR_ADDR_LO)); 1881d9ae7f2bSJakub Kicinski addr_hi = offset != addr_lo; 1882d9ae7f2bSJakub Kicinski *instr &= ~(OP_BR_ADDR_HI | OP_BR_ADDR_LO); 1883d9ae7f2bSJakub Kicinski *instr |= FIELD_PREP(OP_BR_ADDR_HI, addr_hi); 1884d9ae7f2bSJakub Kicinski *instr |= FIELD_PREP(OP_BR_ADDR_LO, addr_lo); 1885d9ae7f2bSJakub Kicinski } 1886d9ae7f2bSJakub Kicinski 1887d9ae7f2bSJakub Kicinski /* --- Assembler logic --- */ 1888d9ae7f2bSJakub Kicinski static int nfp_fixup_branches(struct nfp_prog *nfp_prog) 1889d9ae7f2bSJakub Kicinski { 1890d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta, *next; 1891d9ae7f2bSJakub Kicinski u32 off, br_idx; 1892d9ae7f2bSJakub Kicinski u32 idx; 1893d9ae7f2bSJakub Kicinski 1894d9ae7f2bSJakub Kicinski nfp_for_each_insn_walk2(nfp_prog, meta, next) { 1895d9ae7f2bSJakub Kicinski if (meta->skip) 1896d9ae7f2bSJakub Kicinski continue; 1897d9ae7f2bSJakub Kicinski if (BPF_CLASS(meta->insn.code) != BPF_JMP) 1898d9ae7f2bSJakub Kicinski continue; 1899d9ae7f2bSJakub Kicinski 1900d9ae7f2bSJakub Kicinski br_idx = nfp_prog_offset_to_index(nfp_prog, next->off) - 1; 1901d9ae7f2bSJakub Kicinski if (!nfp_is_br(nfp_prog->prog[br_idx])) { 1902d9ae7f2bSJakub Kicinski pr_err("Fixup found block not ending in branch %d %02x %016llx!!\n", 1903d9ae7f2bSJakub Kicinski br_idx, meta->insn.code, nfp_prog->prog[br_idx]); 1904d9ae7f2bSJakub Kicinski return -ELOOP; 1905d9ae7f2bSJakub Kicinski } 1906d9ae7f2bSJakub Kicinski /* Leave special branches for later */ 1907d9ae7f2bSJakub Kicinski if (FIELD_GET(OP_BR_SPECIAL, nfp_prog->prog[br_idx])) 1908d9ae7f2bSJakub Kicinski continue; 1909d9ae7f2bSJakub Kicinski 1910d9ae7f2bSJakub Kicinski /* Find the target offset in assembler realm */ 1911d9ae7f2bSJakub Kicinski off = meta->insn.off; 1912d9ae7f2bSJakub Kicinski if (!off) { 1913d9ae7f2bSJakub Kicinski pr_err("Fixup found zero offset!!\n"); 1914d9ae7f2bSJakub Kicinski return -ELOOP; 1915d9ae7f2bSJakub Kicinski } 1916d9ae7f2bSJakub Kicinski 1917d9ae7f2bSJakub Kicinski while (off && nfp_meta_has_next(nfp_prog, next)) { 1918d9ae7f2bSJakub Kicinski next = nfp_meta_next(next); 1919d9ae7f2bSJakub Kicinski off--; 1920d9ae7f2bSJakub Kicinski } 1921d9ae7f2bSJakub Kicinski if (off) { 1922d9ae7f2bSJakub Kicinski pr_err("Fixup found too large jump!! %d\n", off); 1923d9ae7f2bSJakub Kicinski return -ELOOP; 1924d9ae7f2bSJakub Kicinski } 1925d9ae7f2bSJakub Kicinski 1926d9ae7f2bSJakub Kicinski if (next->skip) { 1927d9ae7f2bSJakub Kicinski pr_err("Branch landing on removed instruction!!\n"); 1928d9ae7f2bSJakub Kicinski return -ELOOP; 1929d9ae7f2bSJakub Kicinski } 1930d9ae7f2bSJakub Kicinski 1931d9ae7f2bSJakub Kicinski for (idx = nfp_prog_offset_to_index(nfp_prog, meta->off); 1932d9ae7f2bSJakub Kicinski idx <= br_idx; idx++) { 1933d9ae7f2bSJakub Kicinski if (!nfp_is_br(nfp_prog->prog[idx])) 1934d9ae7f2bSJakub Kicinski continue; 1935d9ae7f2bSJakub Kicinski br_set_offset(&nfp_prog->prog[idx], next->off); 1936d9ae7f2bSJakub Kicinski } 1937d9ae7f2bSJakub Kicinski } 1938d9ae7f2bSJakub Kicinski 1939d9ae7f2bSJakub Kicinski /* Fixup 'goto out's separately, they can be scattered around */ 1940d9ae7f2bSJakub Kicinski for (br_idx = 0; br_idx < nfp_prog->prog_len; br_idx++) { 1941d9ae7f2bSJakub Kicinski enum br_special special; 1942d9ae7f2bSJakub Kicinski 1943d9ae7f2bSJakub Kicinski if ((nfp_prog->prog[br_idx] & OP_BR_BASE_MASK) != OP_BR_BASE) 1944d9ae7f2bSJakub Kicinski continue; 1945d9ae7f2bSJakub Kicinski 1946d9ae7f2bSJakub Kicinski special = FIELD_GET(OP_BR_SPECIAL, nfp_prog->prog[br_idx]); 1947d9ae7f2bSJakub Kicinski switch (special) { 1948d9ae7f2bSJakub Kicinski case OP_BR_NORMAL: 1949d9ae7f2bSJakub Kicinski break; 1950d9ae7f2bSJakub Kicinski case OP_BR_GO_OUT: 1951d9ae7f2bSJakub Kicinski br_set_offset(&nfp_prog->prog[br_idx], 1952d9ae7f2bSJakub Kicinski nfp_prog->tgt_out); 1953d9ae7f2bSJakub Kicinski break; 1954d9ae7f2bSJakub Kicinski case OP_BR_GO_ABORT: 1955d9ae7f2bSJakub Kicinski br_set_offset(&nfp_prog->prog[br_idx], 1956d9ae7f2bSJakub Kicinski nfp_prog->tgt_abort); 1957d9ae7f2bSJakub Kicinski break; 1958d9ae7f2bSJakub Kicinski } 1959d9ae7f2bSJakub Kicinski 1960d9ae7f2bSJakub Kicinski nfp_prog->prog[br_idx] &= ~OP_BR_SPECIAL; 1961d9ae7f2bSJakub Kicinski } 1962d9ae7f2bSJakub Kicinski 1963d9ae7f2bSJakub Kicinski return 0; 1964d9ae7f2bSJakub Kicinski } 1965d9ae7f2bSJakub Kicinski 1966d9ae7f2bSJakub Kicinski static void nfp_intro(struct nfp_prog *nfp_prog) 1967d9ae7f2bSJakub Kicinski { 196818e53b6cSJakub Kicinski wrp_immed(nfp_prog, plen_reg(nfp_prog), GENMASK(13, 0)); 196918e53b6cSJakub Kicinski emit_alu(nfp_prog, plen_reg(nfp_prog), 197018e53b6cSJakub Kicinski plen_reg(nfp_prog), ALU_OP_AND, pv_len(nfp_prog)); 1971d9ae7f2bSJakub Kicinski } 1972d9ae7f2bSJakub Kicinski 1973d9ae7f2bSJakub Kicinski static void nfp_outro_tc_da(struct nfp_prog *nfp_prog) 1974d9ae7f2bSJakub Kicinski { 1975d9ae7f2bSJakub Kicinski /* TC direct-action mode: 1976d9ae7f2bSJakub Kicinski * 0,1 ok NOT SUPPORTED[1] 1977d9ae7f2bSJakub Kicinski * 2 drop 0x22 -> drop, count as stat1 1978d9ae7f2bSJakub Kicinski * 4,5 nuke 0x02 -> drop 1979d9ae7f2bSJakub Kicinski * 7 redir 0x44 -> redir, count as stat2 1980d9ae7f2bSJakub Kicinski * * unspec 0x11 -> pass, count as stat0 1981d9ae7f2bSJakub Kicinski * 1982d9ae7f2bSJakub Kicinski * [1] We can't support OK and RECLASSIFY because we can't tell TC 1983d9ae7f2bSJakub Kicinski * the exact decision made. We are forced to support UNSPEC 1984d9ae7f2bSJakub Kicinski * to handle aborts so that's the only one we handle for passing 1985d9ae7f2bSJakub Kicinski * packets up the stack. 1986d9ae7f2bSJakub Kicinski */ 1987d9ae7f2bSJakub Kicinski /* Target for aborts */ 1988d9ae7f2bSJakub Kicinski nfp_prog->tgt_abort = nfp_prog_current_offset(nfp_prog); 1989d9ae7f2bSJakub Kicinski 1990d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 1991d9ae7f2bSJakub Kicinski 1992c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 1993d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_imm(0x11), SHF_SC_L_SHF, 16); 1994d9ae7f2bSJakub Kicinski 1995d9ae7f2bSJakub Kicinski /* Target for normal exits */ 1996d9ae7f2bSJakub Kicinski nfp_prog->tgt_out = nfp_prog_current_offset(nfp_prog); 1997d9ae7f2bSJakub Kicinski 1998d9ae7f2bSJakub Kicinski /* if R0 > 7 jump to abort */ 1999d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_imm(7), ALU_OP_SUB, reg_b(0)); 2000d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BLO, nfp_prog->tgt_abort, 0); 2001c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 2002d9ae7f2bSJakub Kicinski 2003d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_b(2), 0x41221211); 2004d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_b(3), 0x41001211); 2005d9ae7f2bSJakub Kicinski 2006d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_a(1), 2007d9ae7f2bSJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(0), SHF_SC_L_SHF, 2); 2008d9ae7f2bSJakub Kicinski 2009d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(1), ALU_OP_OR, reg_imm(0)); 2010d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_a(2), 2011d9ae7f2bSJakub Kicinski reg_imm(0xf), SHF_OP_AND, reg_b(2), SHF_SC_R_SHF, 0); 2012d9ae7f2bSJakub Kicinski 2013d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(1), ALU_OP_OR, reg_imm(0)); 2014d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_b(2), 2015d9ae7f2bSJakub Kicinski reg_imm(0xf), SHF_OP_AND, reg_b(3), SHF_SC_R_SHF, 0); 2016d9ae7f2bSJakub Kicinski 2017d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 2018d9ae7f2bSJakub Kicinski 2019d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_b(2), 2020d9ae7f2bSJakub Kicinski reg_a(2), SHF_OP_OR, reg_b(2), SHF_SC_L_SHF, 4); 2021d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_b(2), SHF_SC_L_SHF, 16); 2022d9ae7f2bSJakub Kicinski } 2023d9ae7f2bSJakub Kicinski 2024d9ae7f2bSJakub Kicinski static void nfp_outro_xdp(struct nfp_prog *nfp_prog) 2025d9ae7f2bSJakub Kicinski { 2026d9ae7f2bSJakub Kicinski /* XDP return codes: 2027d9ae7f2bSJakub Kicinski * 0 aborted 0x82 -> drop, count as stat3 2028d9ae7f2bSJakub Kicinski * 1 drop 0x22 -> drop, count as stat1 2029d9ae7f2bSJakub Kicinski * 2 pass 0x11 -> pass, count as stat0 2030d9ae7f2bSJakub Kicinski * 3 tx 0x44 -> redir, count as stat2 2031d9ae7f2bSJakub Kicinski * * unknown 0x82 -> drop, count as stat3 2032d9ae7f2bSJakub Kicinski */ 2033d9ae7f2bSJakub Kicinski /* Target for aborts */ 2034d9ae7f2bSJakub Kicinski nfp_prog->tgt_abort = nfp_prog_current_offset(nfp_prog); 2035d9ae7f2bSJakub Kicinski 2036d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 2037d9ae7f2bSJakub Kicinski 2038c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 2039d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_imm(0x82), SHF_SC_L_SHF, 16); 2040d9ae7f2bSJakub Kicinski 2041d9ae7f2bSJakub Kicinski /* Target for normal exits */ 2042d9ae7f2bSJakub Kicinski nfp_prog->tgt_out = nfp_prog_current_offset(nfp_prog); 2043d9ae7f2bSJakub Kicinski 2044d9ae7f2bSJakub Kicinski /* if R0 > 3 jump to abort */ 2045d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_imm(3), ALU_OP_SUB, reg_b(0)); 2046d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BLO, nfp_prog->tgt_abort, 0); 2047d9ae7f2bSJakub Kicinski 2048d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_b(2), 0x44112282); 2049d9ae7f2bSJakub Kicinski 2050d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_a(1), 2051d9ae7f2bSJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(0), SHF_SC_L_SHF, 3); 2052d9ae7f2bSJakub Kicinski 2053d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(1), ALU_OP_OR, reg_imm(0)); 2054d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_b(2), 2055d9ae7f2bSJakub Kicinski reg_imm(0xff), SHF_OP_AND, reg_b(2), SHF_SC_R_SHF, 0); 2056d9ae7f2bSJakub Kicinski 2057d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 2058d9ae7f2bSJakub Kicinski 2059c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 2060d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_b(2), SHF_SC_L_SHF, 16); 2061d9ae7f2bSJakub Kicinski } 2062d9ae7f2bSJakub Kicinski 2063d9ae7f2bSJakub Kicinski static void nfp_outro(struct nfp_prog *nfp_prog) 2064d9ae7f2bSJakub Kicinski { 2065012bb8a8SJakub Kicinski switch (nfp_prog->type) { 2066012bb8a8SJakub Kicinski case BPF_PROG_TYPE_SCHED_CLS: 2067d9ae7f2bSJakub Kicinski nfp_outro_tc_da(nfp_prog); 2068d9ae7f2bSJakub Kicinski break; 2069012bb8a8SJakub Kicinski case BPF_PROG_TYPE_XDP: 2070d9ae7f2bSJakub Kicinski nfp_outro_xdp(nfp_prog); 2071d9ae7f2bSJakub Kicinski break; 2072012bb8a8SJakub Kicinski default: 2073012bb8a8SJakub Kicinski WARN_ON(1); 2074d9ae7f2bSJakub Kicinski } 2075d9ae7f2bSJakub Kicinski } 2076d9ae7f2bSJakub Kicinski 2077d9ae7f2bSJakub Kicinski static int nfp_translate(struct nfp_prog *nfp_prog) 2078d9ae7f2bSJakub Kicinski { 2079d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta; 2080ff42bb9fSJakub Kicinski int err; 2081d9ae7f2bSJakub Kicinski 2082d9ae7f2bSJakub Kicinski nfp_intro(nfp_prog); 2083d9ae7f2bSJakub Kicinski if (nfp_prog->error) 2084d9ae7f2bSJakub Kicinski return nfp_prog->error; 2085d9ae7f2bSJakub Kicinski 2086d9ae7f2bSJakub Kicinski list_for_each_entry(meta, &nfp_prog->insns, l) { 2087d9ae7f2bSJakub Kicinski instr_cb_t cb = instr_cb[meta->insn.code]; 2088d9ae7f2bSJakub Kicinski 2089d9ae7f2bSJakub Kicinski meta->off = nfp_prog_current_offset(nfp_prog); 2090d9ae7f2bSJakub Kicinski 2091d9ae7f2bSJakub Kicinski if (meta->skip) { 2092d9ae7f2bSJakub Kicinski nfp_prog->n_translated++; 2093d9ae7f2bSJakub Kicinski continue; 2094d9ae7f2bSJakub Kicinski } 2095d9ae7f2bSJakub Kicinski 2096d9ae7f2bSJakub Kicinski if (nfp_meta_has_prev(nfp_prog, meta) && 2097d9ae7f2bSJakub Kicinski nfp_meta_prev(meta)->double_cb) 2098d9ae7f2bSJakub Kicinski cb = nfp_meta_prev(meta)->double_cb; 2099d9ae7f2bSJakub Kicinski if (!cb) 2100d9ae7f2bSJakub Kicinski return -ENOENT; 2101d9ae7f2bSJakub Kicinski err = cb(nfp_prog, meta); 2102d9ae7f2bSJakub Kicinski if (err) 2103d9ae7f2bSJakub Kicinski return err; 2104d9ae7f2bSJakub Kicinski 2105d9ae7f2bSJakub Kicinski nfp_prog->n_translated++; 2106d9ae7f2bSJakub Kicinski } 2107d9ae7f2bSJakub Kicinski 2108d9ae7f2bSJakub Kicinski nfp_outro(nfp_prog); 2109d9ae7f2bSJakub Kicinski if (nfp_prog->error) 2110d9ae7f2bSJakub Kicinski return nfp_prog->error; 2111d9ae7f2bSJakub Kicinski 2112ff42bb9fSJakub Kicinski wrp_nops(nfp_prog, NFP_USTORE_PREFETCH_WINDOW); 21131c03e03fSJakub Kicinski if (nfp_prog->error) 21141c03e03fSJakub Kicinski return nfp_prog->error; 21151c03e03fSJakub Kicinski 2116d9ae7f2bSJakub Kicinski return nfp_fixup_branches(nfp_prog); 2117d9ae7f2bSJakub Kicinski } 2118d9ae7f2bSJakub Kicinski 2119d9ae7f2bSJakub Kicinski /* --- Optimizations --- */ 2120d9ae7f2bSJakub Kicinski static void nfp_bpf_opt_reg_init(struct nfp_prog *nfp_prog) 2121d9ae7f2bSJakub Kicinski { 2122d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta; 2123d9ae7f2bSJakub Kicinski 2124d9ae7f2bSJakub Kicinski list_for_each_entry(meta, &nfp_prog->insns, l) { 2125d9ae7f2bSJakub Kicinski struct bpf_insn insn = meta->insn; 2126d9ae7f2bSJakub Kicinski 2127d9ae7f2bSJakub Kicinski /* Programs converted from cBPF start with register xoring */ 2128d9ae7f2bSJakub Kicinski if (insn.code == (BPF_ALU64 | BPF_XOR | BPF_X) && 2129d9ae7f2bSJakub Kicinski insn.src_reg == insn.dst_reg) 2130d9ae7f2bSJakub Kicinski continue; 2131d9ae7f2bSJakub Kicinski 2132d9ae7f2bSJakub Kicinski /* Programs start with R6 = R1 but we ignore the skb pointer */ 2133d9ae7f2bSJakub Kicinski if (insn.code == (BPF_ALU64 | BPF_MOV | BPF_X) && 2134d9ae7f2bSJakub Kicinski insn.src_reg == 1 && insn.dst_reg == 6) 2135d9ae7f2bSJakub Kicinski meta->skip = true; 2136d9ae7f2bSJakub Kicinski 2137d9ae7f2bSJakub Kicinski /* Return as soon as something doesn't match */ 2138d9ae7f2bSJakub Kicinski if (!meta->skip) 2139d9ae7f2bSJakub Kicinski return; 2140d9ae7f2bSJakub Kicinski } 2141d9ae7f2bSJakub Kicinski } 2142d9ae7f2bSJakub Kicinski 2143d9ae7f2bSJakub Kicinski /* Remove masking after load since our load guarantees this is not needed */ 2144d9ae7f2bSJakub Kicinski static void nfp_bpf_opt_ld_mask(struct nfp_prog *nfp_prog) 2145d9ae7f2bSJakub Kicinski { 2146d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta1, *meta2; 2147d9ae7f2bSJakub Kicinski const s32 exp_mask[] = { 2148d9ae7f2bSJakub Kicinski [BPF_B] = 0x000000ffU, 2149d9ae7f2bSJakub Kicinski [BPF_H] = 0x0000ffffU, 2150d9ae7f2bSJakub Kicinski [BPF_W] = 0xffffffffU, 2151d9ae7f2bSJakub Kicinski }; 2152d9ae7f2bSJakub Kicinski 2153d9ae7f2bSJakub Kicinski nfp_for_each_insn_walk2(nfp_prog, meta1, meta2) { 2154d9ae7f2bSJakub Kicinski struct bpf_insn insn, next; 2155d9ae7f2bSJakub Kicinski 2156d9ae7f2bSJakub Kicinski insn = meta1->insn; 2157d9ae7f2bSJakub Kicinski next = meta2->insn; 2158d9ae7f2bSJakub Kicinski 2159d9ae7f2bSJakub Kicinski if (BPF_CLASS(insn.code) != BPF_LD) 2160d9ae7f2bSJakub Kicinski continue; 2161d9ae7f2bSJakub Kicinski if (BPF_MODE(insn.code) != BPF_ABS && 2162d9ae7f2bSJakub Kicinski BPF_MODE(insn.code) != BPF_IND) 2163d9ae7f2bSJakub Kicinski continue; 2164d9ae7f2bSJakub Kicinski 2165d9ae7f2bSJakub Kicinski if (next.code != (BPF_ALU64 | BPF_AND | BPF_K)) 2166d9ae7f2bSJakub Kicinski continue; 2167d9ae7f2bSJakub Kicinski 2168d9ae7f2bSJakub Kicinski if (!exp_mask[BPF_SIZE(insn.code)]) 2169d9ae7f2bSJakub Kicinski continue; 2170d9ae7f2bSJakub Kicinski if (exp_mask[BPF_SIZE(insn.code)] != next.imm) 2171d9ae7f2bSJakub Kicinski continue; 2172d9ae7f2bSJakub Kicinski 2173d9ae7f2bSJakub Kicinski if (next.src_reg || next.dst_reg) 2174d9ae7f2bSJakub Kicinski continue; 2175d9ae7f2bSJakub Kicinski 2176d9ae7f2bSJakub Kicinski meta2->skip = true; 2177d9ae7f2bSJakub Kicinski } 2178d9ae7f2bSJakub Kicinski } 2179d9ae7f2bSJakub Kicinski 2180d9ae7f2bSJakub Kicinski static void nfp_bpf_opt_ld_shift(struct nfp_prog *nfp_prog) 2181d9ae7f2bSJakub Kicinski { 2182d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta1, *meta2, *meta3; 2183d9ae7f2bSJakub Kicinski 2184d9ae7f2bSJakub Kicinski nfp_for_each_insn_walk3(nfp_prog, meta1, meta2, meta3) { 2185d9ae7f2bSJakub Kicinski struct bpf_insn insn, next1, next2; 2186d9ae7f2bSJakub Kicinski 2187d9ae7f2bSJakub Kicinski insn = meta1->insn; 2188d9ae7f2bSJakub Kicinski next1 = meta2->insn; 2189d9ae7f2bSJakub Kicinski next2 = meta3->insn; 2190d9ae7f2bSJakub Kicinski 2191d9ae7f2bSJakub Kicinski if (BPF_CLASS(insn.code) != BPF_LD) 2192d9ae7f2bSJakub Kicinski continue; 2193d9ae7f2bSJakub Kicinski if (BPF_MODE(insn.code) != BPF_ABS && 2194d9ae7f2bSJakub Kicinski BPF_MODE(insn.code) != BPF_IND) 2195d9ae7f2bSJakub Kicinski continue; 2196d9ae7f2bSJakub Kicinski if (BPF_SIZE(insn.code) != BPF_W) 2197d9ae7f2bSJakub Kicinski continue; 2198d9ae7f2bSJakub Kicinski 2199d9ae7f2bSJakub Kicinski if (!(next1.code == (BPF_LSH | BPF_K | BPF_ALU64) && 2200d9ae7f2bSJakub Kicinski next2.code == (BPF_RSH | BPF_K | BPF_ALU64)) && 2201d9ae7f2bSJakub Kicinski !(next1.code == (BPF_RSH | BPF_K | BPF_ALU64) && 2202d9ae7f2bSJakub Kicinski next2.code == (BPF_LSH | BPF_K | BPF_ALU64))) 2203d9ae7f2bSJakub Kicinski continue; 2204d9ae7f2bSJakub Kicinski 2205d9ae7f2bSJakub Kicinski if (next1.src_reg || next1.dst_reg || 2206d9ae7f2bSJakub Kicinski next2.src_reg || next2.dst_reg) 2207d9ae7f2bSJakub Kicinski continue; 2208d9ae7f2bSJakub Kicinski 2209d9ae7f2bSJakub Kicinski if (next1.imm != 0x20 || next2.imm != 0x20) 2210d9ae7f2bSJakub Kicinski continue; 2211d9ae7f2bSJakub Kicinski 2212d9ae7f2bSJakub Kicinski meta2->skip = true; 2213d9ae7f2bSJakub Kicinski meta3->skip = true; 2214d9ae7f2bSJakub Kicinski } 2215d9ae7f2bSJakub Kicinski } 2216d9ae7f2bSJakub Kicinski 2217d9ae7f2bSJakub Kicinski static int nfp_bpf_optimize(struct nfp_prog *nfp_prog) 2218d9ae7f2bSJakub Kicinski { 2219d9ae7f2bSJakub Kicinski nfp_bpf_opt_reg_init(nfp_prog); 2220d9ae7f2bSJakub Kicinski 2221d9ae7f2bSJakub Kicinski nfp_bpf_opt_ld_mask(nfp_prog); 2222d9ae7f2bSJakub Kicinski nfp_bpf_opt_ld_shift(nfp_prog); 2223d9ae7f2bSJakub Kicinski 2224d9ae7f2bSJakub Kicinski return 0; 2225d9ae7f2bSJakub Kicinski } 2226d9ae7f2bSJakub Kicinski 22272e85d388SJakub Kicinski static int nfp_bpf_ustore_calc(struct nfp_prog *nfp_prog, __le64 *ustore) 2228fd068ddcSJakub Kicinski { 2229fd068ddcSJakub Kicinski int i; 2230fd068ddcSJakub Kicinski 2231fd068ddcSJakub Kicinski for (i = 0; i < nfp_prog->prog_len; i++) { 2232fd068ddcSJakub Kicinski int err; 2233fd068ddcSJakub Kicinski 2234fd068ddcSJakub Kicinski err = nfp_ustore_check_valid_no_ecc(nfp_prog->prog[i]); 2235fd068ddcSJakub Kicinski if (err) 2236fd068ddcSJakub Kicinski return err; 2237fd068ddcSJakub Kicinski 2238fd068ddcSJakub Kicinski nfp_prog->prog[i] = nfp_ustore_calc_ecc_insn(nfp_prog->prog[i]); 22392e85d388SJakub Kicinski 22402e85d388SJakub Kicinski ustore[i] = cpu_to_le64(nfp_prog->prog[i]); 2241fd068ddcSJakub Kicinski } 2242fd068ddcSJakub Kicinski 2243fd068ddcSJakub Kicinski return 0; 2244fd068ddcSJakub Kicinski } 2245fd068ddcSJakub Kicinski 2246d9ae7f2bSJakub Kicinski /** 2247d9ae7f2bSJakub Kicinski * nfp_bpf_jit() - translate BPF code into NFP assembly 22489314c442SJakub Kicinski * @nfp_prog: nfp_prog prepared based on @filter 2249d9ae7f2bSJakub Kicinski * @filter: kernel BPF filter struct 2250d9ae7f2bSJakub Kicinski */ 22519314c442SJakub Kicinski int nfp_bpf_jit(struct nfp_prog *nfp_prog, struct bpf_prog *filter) 2252d9ae7f2bSJakub Kicinski { 2253d9ae7f2bSJakub Kicinski int ret; 2254d9ae7f2bSJakub Kicinski 2255d9ae7f2bSJakub Kicinski ret = nfp_prog_verify(nfp_prog, filter); 2256d9ae7f2bSJakub Kicinski if (ret) 22579314c442SJakub Kicinski return ret; 2258d9ae7f2bSJakub Kicinski 2259d9ae7f2bSJakub Kicinski ret = nfp_bpf_optimize(nfp_prog); 2260d9ae7f2bSJakub Kicinski if (ret) 22619314c442SJakub Kicinski return ret; 2262d9ae7f2bSJakub Kicinski 2263d9ae7f2bSJakub Kicinski ret = nfp_translate(nfp_prog); 2264d9ae7f2bSJakub Kicinski if (ret) { 2265d9ae7f2bSJakub Kicinski pr_err("Translation failed with error %d (translated: %u)\n", 2266d9ae7f2bSJakub Kicinski ret, nfp_prog->n_translated); 22679314c442SJakub Kicinski return -EINVAL; 2268d9ae7f2bSJakub Kicinski } 2269d9ae7f2bSJakub Kicinski 22709314c442SJakub Kicinski return nfp_bpf_ustore_calc(nfp_prog, (__force __le64 *)nfp_prog->prog); 2271d9ae7f2bSJakub Kicinski } 2272