1d9ae7f2bSJakub Kicinski /* 2854dc87dSJiong Wang * Copyright (C) 2016-2017 Netronome Systems, Inc. 3d9ae7f2bSJakub Kicinski * 4d9ae7f2bSJakub Kicinski * This software is dual licensed under the GNU General License Version 2, 5d9ae7f2bSJakub Kicinski * June 1991 as shown in the file COPYING in the top-level directory of this 6d9ae7f2bSJakub Kicinski * source tree or the BSD 2-Clause License provided below. You have the 7d9ae7f2bSJakub Kicinski * option to license this software under the complete terms of either license. 8d9ae7f2bSJakub Kicinski * 9d9ae7f2bSJakub Kicinski * The BSD 2-Clause License: 10d9ae7f2bSJakub Kicinski * 11d9ae7f2bSJakub Kicinski * Redistribution and use in source and binary forms, with or 12d9ae7f2bSJakub Kicinski * without modification, are permitted provided that the following 13d9ae7f2bSJakub Kicinski * conditions are met: 14d9ae7f2bSJakub Kicinski * 15d9ae7f2bSJakub Kicinski * 1. Redistributions of source code must retain the above 16d9ae7f2bSJakub Kicinski * copyright notice, this list of conditions and the following 17d9ae7f2bSJakub Kicinski * disclaimer. 18d9ae7f2bSJakub Kicinski * 19d9ae7f2bSJakub Kicinski * 2. Redistributions in binary form must reproduce the above 20d9ae7f2bSJakub Kicinski * copyright notice, this list of conditions and the following 21d9ae7f2bSJakub Kicinski * disclaimer in the documentation and/or other materials 22d9ae7f2bSJakub Kicinski * provided with the distribution. 23d9ae7f2bSJakub Kicinski * 24d9ae7f2bSJakub Kicinski * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 25d9ae7f2bSJakub Kicinski * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 26d9ae7f2bSJakub Kicinski * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 27d9ae7f2bSJakub Kicinski * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 28d9ae7f2bSJakub Kicinski * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 29d9ae7f2bSJakub Kicinski * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 30d9ae7f2bSJakub Kicinski * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 31d9ae7f2bSJakub Kicinski * SOFTWARE. 32d9ae7f2bSJakub Kicinski */ 33d9ae7f2bSJakub Kicinski 34d9ae7f2bSJakub Kicinski #define pr_fmt(fmt) "NFP net bpf: " fmt 35d9ae7f2bSJakub Kicinski 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_prev(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 70d9ae7f2bSJakub Kicinski { 71d9ae7f2bSJakub Kicinski return meta->l.prev != &nfp_prog->insns; 72d9ae7f2bSJakub Kicinski } 73d9ae7f2bSJakub Kicinski 74d9ae7f2bSJakub Kicinski static void nfp_prog_push(struct nfp_prog *nfp_prog, u64 insn) 75d9ae7f2bSJakub Kicinski { 76d9ae7f2bSJakub Kicinski if (nfp_prog->__prog_alloc_len == nfp_prog->prog_len) { 77d9ae7f2bSJakub Kicinski nfp_prog->error = -ENOSPC; 78d9ae7f2bSJakub Kicinski return; 79d9ae7f2bSJakub Kicinski } 80d9ae7f2bSJakub Kicinski 81d9ae7f2bSJakub Kicinski nfp_prog->prog[nfp_prog->prog_len] = insn; 82d9ae7f2bSJakub Kicinski nfp_prog->prog_len++; 83d9ae7f2bSJakub Kicinski } 84d9ae7f2bSJakub Kicinski 85d9ae7f2bSJakub Kicinski static unsigned int nfp_prog_current_offset(struct nfp_prog *nfp_prog) 86d9ae7f2bSJakub Kicinski { 87d9ae7f2bSJakub Kicinski return nfp_prog->start_off + nfp_prog->prog_len; 88d9ae7f2bSJakub Kicinski } 89d9ae7f2bSJakub Kicinski 90d9ae7f2bSJakub Kicinski static unsigned int 91d9ae7f2bSJakub Kicinski nfp_prog_offset_to_index(struct nfp_prog *nfp_prog, unsigned int offset) 92d9ae7f2bSJakub Kicinski { 93d9ae7f2bSJakub Kicinski return offset - nfp_prog->start_off; 94d9ae7f2bSJakub Kicinski } 95d9ae7f2bSJakub Kicinski 96d9ae7f2bSJakub Kicinski /* --- Emitters --- */ 97d9ae7f2bSJakub Kicinski static void 98d9ae7f2bSJakub Kicinski __emit_cmd(struct nfp_prog *nfp_prog, enum cmd_tgt_map op, 99d9ae7f2bSJakub Kicinski u8 mode, u8 xfer, u8 areg, u8 breg, u8 size, bool sync) 100d9ae7f2bSJakub Kicinski { 101d9ae7f2bSJakub Kicinski enum cmd_ctx_swap ctx; 102d9ae7f2bSJakub Kicinski u64 insn; 103d9ae7f2bSJakub Kicinski 104d9ae7f2bSJakub Kicinski if (sync) 105d9ae7f2bSJakub Kicinski ctx = CMD_CTX_SWAP; 106d9ae7f2bSJakub Kicinski else 107d9ae7f2bSJakub Kicinski ctx = CMD_CTX_NO_SWAP; 108d9ae7f2bSJakub Kicinski 109d9ae7f2bSJakub Kicinski insn = FIELD_PREP(OP_CMD_A_SRC, areg) | 110d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_CTX, ctx) | 111d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_B_SRC, breg) | 112d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_TOKEN, cmd_tgt_act[op].token) | 113d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_XFER, xfer) | 114d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_CNT, size) | 115d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_SIG, sync) | 116d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_TGT_CMD, cmd_tgt_act[op].tgt_cmd) | 117d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_MODE, mode); 118d9ae7f2bSJakub Kicinski 119d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 120d9ae7f2bSJakub Kicinski } 121d9ae7f2bSJakub Kicinski 122d9ae7f2bSJakub Kicinski static void 123d9ae7f2bSJakub Kicinski emit_cmd(struct nfp_prog *nfp_prog, enum cmd_tgt_map op, 124b3f868dfSJakub Kicinski u8 mode, u8 xfer, swreg lreg, swreg rreg, u8 size, bool sync) 125d9ae7f2bSJakub Kicinski { 126d9ae7f2bSJakub Kicinski struct nfp_insn_re_regs reg; 127d9ae7f2bSJakub Kicinski int err; 128d9ae7f2bSJakub Kicinski 129d9ae7f2bSJakub Kicinski err = swreg_to_restricted(reg_none(), lreg, rreg, ®, false); 130d9ae7f2bSJakub Kicinski if (err) { 131d9ae7f2bSJakub Kicinski nfp_prog->error = err; 132d9ae7f2bSJakub Kicinski return; 133d9ae7f2bSJakub Kicinski } 134d9ae7f2bSJakub Kicinski if (reg.swap) { 135d9ae7f2bSJakub Kicinski pr_err("cmd can't swap arguments\n"); 136d9ae7f2bSJakub Kicinski nfp_prog->error = -EFAULT; 137d9ae7f2bSJakub Kicinski return; 138d9ae7f2bSJakub Kicinski } 139995e101fSJakub Kicinski if (reg.dst_lmextn || reg.src_lmextn) { 140995e101fSJakub Kicinski pr_err("cmd can't use LMextn\n"); 141995e101fSJakub Kicinski nfp_prog->error = -EFAULT; 142995e101fSJakub Kicinski return; 143995e101fSJakub Kicinski } 144d9ae7f2bSJakub Kicinski 145d9ae7f2bSJakub Kicinski __emit_cmd(nfp_prog, op, mode, xfer, reg.areg, reg.breg, size, sync); 146d9ae7f2bSJakub Kicinski } 147d9ae7f2bSJakub Kicinski 148d9ae7f2bSJakub Kicinski static void 149d9ae7f2bSJakub Kicinski __emit_br(struct nfp_prog *nfp_prog, enum br_mask mask, enum br_ev_pip ev_pip, 150d9ae7f2bSJakub Kicinski enum br_ctx_signal_state css, u16 addr, u8 defer) 151d9ae7f2bSJakub Kicinski { 152d9ae7f2bSJakub Kicinski u16 addr_lo, addr_hi; 153d9ae7f2bSJakub Kicinski u64 insn; 154d9ae7f2bSJakub Kicinski 155d9ae7f2bSJakub Kicinski addr_lo = addr & (OP_BR_ADDR_LO >> __bf_shf(OP_BR_ADDR_LO)); 156d9ae7f2bSJakub Kicinski addr_hi = addr != addr_lo; 157d9ae7f2bSJakub Kicinski 158d9ae7f2bSJakub Kicinski insn = OP_BR_BASE | 159d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_MASK, mask) | 160d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_EV_PIP, ev_pip) | 161d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_CSS, css) | 162d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_DEFBR, defer) | 163d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_ADDR_LO, addr_lo) | 164d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_ADDR_HI, addr_hi); 165d9ae7f2bSJakub Kicinski 166d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 167d9ae7f2bSJakub Kicinski } 168d9ae7f2bSJakub Kicinski 169d9ae7f2bSJakub Kicinski static void emit_br_def(struct nfp_prog *nfp_prog, u16 addr, u8 defer) 170d9ae7f2bSJakub Kicinski { 171d9ae7f2bSJakub Kicinski if (defer > 2) { 172d9ae7f2bSJakub Kicinski pr_err("BUG: branch defer out of bounds %d\n", defer); 173d9ae7f2bSJakub Kicinski nfp_prog->error = -EFAULT; 174d9ae7f2bSJakub Kicinski return; 175d9ae7f2bSJakub Kicinski } 176d9ae7f2bSJakub Kicinski __emit_br(nfp_prog, BR_UNC, BR_EV_PIP_UNCOND, BR_CSS_NONE, addr, defer); 177d9ae7f2bSJakub Kicinski } 178d9ae7f2bSJakub Kicinski 179d9ae7f2bSJakub Kicinski static void 180d9ae7f2bSJakub Kicinski emit_br(struct nfp_prog *nfp_prog, enum br_mask mask, u16 addr, u8 defer) 181d9ae7f2bSJakub Kicinski { 182d9ae7f2bSJakub Kicinski __emit_br(nfp_prog, mask, 183d9ae7f2bSJakub Kicinski mask != BR_UNC ? BR_EV_PIP_COND : BR_EV_PIP_UNCOND, 184d9ae7f2bSJakub Kicinski BR_CSS_NONE, addr, defer); 185d9ae7f2bSJakub Kicinski } 186d9ae7f2bSJakub Kicinski 187d9ae7f2bSJakub Kicinski static void 188d9ae7f2bSJakub Kicinski __emit_immed(struct nfp_prog *nfp_prog, u16 areg, u16 breg, u16 imm_hi, 189d9ae7f2bSJakub Kicinski enum immed_width width, bool invert, 190995e101fSJakub Kicinski enum immed_shift shift, bool wr_both, 191995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 192d9ae7f2bSJakub Kicinski { 193d9ae7f2bSJakub Kicinski u64 insn; 194d9ae7f2bSJakub Kicinski 195d9ae7f2bSJakub Kicinski insn = OP_IMMED_BASE | 196d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_A_SRC, areg) | 197d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_B_SRC, breg) | 198d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_IMM, imm_hi) | 199d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_WIDTH, width) | 200d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_INV, invert) | 201d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_SHIFT, shift) | 202995e101fSJakub Kicinski FIELD_PREP(OP_IMMED_WR_AB, wr_both) | 203995e101fSJakub Kicinski FIELD_PREP(OP_IMMED_SRC_LMEXTN, src_lmextn) | 204995e101fSJakub Kicinski FIELD_PREP(OP_IMMED_DST_LMEXTN, dst_lmextn); 205d9ae7f2bSJakub Kicinski 206d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 207d9ae7f2bSJakub Kicinski } 208d9ae7f2bSJakub Kicinski 209d9ae7f2bSJakub Kicinski static void 210b3f868dfSJakub Kicinski emit_immed(struct nfp_prog *nfp_prog, swreg dst, u16 imm, 211d9ae7f2bSJakub Kicinski enum immed_width width, bool invert, enum immed_shift shift) 212d9ae7f2bSJakub Kicinski { 213d9ae7f2bSJakub Kicinski struct nfp_insn_ur_regs reg; 214d9ae7f2bSJakub Kicinski int err; 215d9ae7f2bSJakub Kicinski 216b3f868dfSJakub Kicinski if (swreg_type(dst) == NN_REG_IMM) { 217d9ae7f2bSJakub Kicinski nfp_prog->error = -EFAULT; 218d9ae7f2bSJakub Kicinski return; 219d9ae7f2bSJakub Kicinski } 220d9ae7f2bSJakub Kicinski 221d9ae7f2bSJakub Kicinski err = swreg_to_unrestricted(dst, dst, reg_imm(imm & 0xff), ®); 222d9ae7f2bSJakub Kicinski if (err) { 223d9ae7f2bSJakub Kicinski nfp_prog->error = err; 224d9ae7f2bSJakub Kicinski return; 225d9ae7f2bSJakub Kicinski } 226d9ae7f2bSJakub Kicinski 227d9ae7f2bSJakub Kicinski __emit_immed(nfp_prog, reg.areg, reg.breg, imm >> 8, width, 228995e101fSJakub Kicinski invert, shift, reg.wr_both, 229995e101fSJakub Kicinski reg.dst_lmextn, reg.src_lmextn); 230d9ae7f2bSJakub Kicinski } 231d9ae7f2bSJakub Kicinski 232d9ae7f2bSJakub Kicinski static void 233d9ae7f2bSJakub Kicinski __emit_shf(struct nfp_prog *nfp_prog, u16 dst, enum alu_dst_ab dst_ab, 234d9ae7f2bSJakub Kicinski enum shf_sc sc, u8 shift, 235995e101fSJakub Kicinski u16 areg, enum shf_op op, u16 breg, bool i8, bool sw, bool wr_both, 236995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 237d9ae7f2bSJakub Kicinski { 238d9ae7f2bSJakub Kicinski u64 insn; 239d9ae7f2bSJakub Kicinski 240d9ae7f2bSJakub Kicinski if (!FIELD_FIT(OP_SHF_SHIFT, shift)) { 241d9ae7f2bSJakub Kicinski nfp_prog->error = -EFAULT; 242d9ae7f2bSJakub Kicinski return; 243d9ae7f2bSJakub Kicinski } 244d9ae7f2bSJakub Kicinski 245d9ae7f2bSJakub Kicinski if (sc == SHF_SC_L_SHF) 246d9ae7f2bSJakub Kicinski shift = 32 - shift; 247d9ae7f2bSJakub Kicinski 248d9ae7f2bSJakub Kicinski insn = OP_SHF_BASE | 249d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_A_SRC, areg) | 250d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_SC, sc) | 251d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_B_SRC, breg) | 252d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_I8, i8) | 253d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_SW, sw) | 254d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_DST, dst) | 255d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_SHIFT, shift) | 256d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_OP, op) | 257d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_DST_AB, dst_ab) | 258995e101fSJakub Kicinski FIELD_PREP(OP_SHF_WR_AB, wr_both) | 259995e101fSJakub Kicinski FIELD_PREP(OP_SHF_SRC_LMEXTN, src_lmextn) | 260995e101fSJakub Kicinski FIELD_PREP(OP_SHF_DST_LMEXTN, dst_lmextn); 261d9ae7f2bSJakub Kicinski 262d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 263d9ae7f2bSJakub Kicinski } 264d9ae7f2bSJakub Kicinski 265d9ae7f2bSJakub Kicinski static void 266b3f868dfSJakub Kicinski emit_shf(struct nfp_prog *nfp_prog, swreg dst, 267b3f868dfSJakub Kicinski swreg lreg, enum shf_op op, swreg rreg, enum shf_sc sc, u8 shift) 268d9ae7f2bSJakub Kicinski { 269d9ae7f2bSJakub Kicinski struct nfp_insn_re_regs reg; 270d9ae7f2bSJakub Kicinski int err; 271d9ae7f2bSJakub Kicinski 272d9ae7f2bSJakub Kicinski err = swreg_to_restricted(dst, lreg, rreg, ®, true); 273d9ae7f2bSJakub Kicinski if (err) { 274d9ae7f2bSJakub Kicinski nfp_prog->error = err; 275d9ae7f2bSJakub Kicinski return; 276d9ae7f2bSJakub Kicinski } 277d9ae7f2bSJakub Kicinski 278d9ae7f2bSJakub Kicinski __emit_shf(nfp_prog, reg.dst, reg.dst_ab, sc, shift, 279995e101fSJakub Kicinski reg.areg, op, reg.breg, reg.i8, reg.swap, reg.wr_both, 280995e101fSJakub Kicinski reg.dst_lmextn, reg.src_lmextn); 281d9ae7f2bSJakub Kicinski } 282d9ae7f2bSJakub Kicinski 283d9ae7f2bSJakub Kicinski static void 284d9ae7f2bSJakub Kicinski __emit_alu(struct nfp_prog *nfp_prog, u16 dst, enum alu_dst_ab dst_ab, 285995e101fSJakub Kicinski u16 areg, enum alu_op op, u16 breg, bool swap, bool wr_both, 286995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 287d9ae7f2bSJakub Kicinski { 288d9ae7f2bSJakub Kicinski u64 insn; 289d9ae7f2bSJakub Kicinski 290d9ae7f2bSJakub Kicinski insn = OP_ALU_BASE | 291d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_A_SRC, areg) | 292d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_B_SRC, breg) | 293d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_DST, dst) | 294d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_SW, swap) | 295d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_OP, op) | 296d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_DST_AB, dst_ab) | 297995e101fSJakub Kicinski FIELD_PREP(OP_ALU_WR_AB, wr_both) | 298995e101fSJakub Kicinski FIELD_PREP(OP_ALU_SRC_LMEXTN, src_lmextn) | 299995e101fSJakub Kicinski FIELD_PREP(OP_ALU_DST_LMEXTN, dst_lmextn); 300d9ae7f2bSJakub Kicinski 301d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 302d9ae7f2bSJakub Kicinski } 303d9ae7f2bSJakub Kicinski 304d9ae7f2bSJakub Kicinski static void 305b3f868dfSJakub Kicinski emit_alu(struct nfp_prog *nfp_prog, swreg dst, 306b3f868dfSJakub Kicinski swreg lreg, enum alu_op op, swreg rreg) 307d9ae7f2bSJakub Kicinski { 308d9ae7f2bSJakub Kicinski struct nfp_insn_ur_regs reg; 309d9ae7f2bSJakub Kicinski int err; 310d9ae7f2bSJakub Kicinski 311d9ae7f2bSJakub Kicinski err = swreg_to_unrestricted(dst, lreg, rreg, ®); 312d9ae7f2bSJakub Kicinski if (err) { 313d9ae7f2bSJakub Kicinski nfp_prog->error = err; 314d9ae7f2bSJakub Kicinski return; 315d9ae7f2bSJakub Kicinski } 316d9ae7f2bSJakub Kicinski 317d9ae7f2bSJakub Kicinski __emit_alu(nfp_prog, reg.dst, reg.dst_ab, 318995e101fSJakub Kicinski reg.areg, op, reg.breg, reg.swap, reg.wr_both, 319995e101fSJakub Kicinski reg.dst_lmextn, reg.src_lmextn); 320d9ae7f2bSJakub Kicinski } 321d9ae7f2bSJakub Kicinski 322d9ae7f2bSJakub Kicinski static void 323d9ae7f2bSJakub Kicinski __emit_ld_field(struct nfp_prog *nfp_prog, enum shf_sc sc, 324d9ae7f2bSJakub Kicinski u8 areg, u8 bmask, u8 breg, u8 shift, bool imm8, 325995e101fSJakub Kicinski bool zero, bool swap, bool wr_both, 326995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 327d9ae7f2bSJakub Kicinski { 328d9ae7f2bSJakub Kicinski u64 insn; 329d9ae7f2bSJakub Kicinski 330d9ae7f2bSJakub Kicinski insn = OP_LDF_BASE | 331d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_A_SRC, areg) | 332d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_SC, sc) | 333d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_B_SRC, breg) | 334d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_I8, imm8) | 335d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_SW, swap) | 336d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_ZF, zero) | 337d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_BMASK, bmask) | 338d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_SHF, shift) | 339995e101fSJakub Kicinski FIELD_PREP(OP_LDF_WR_AB, wr_both) | 340995e101fSJakub Kicinski FIELD_PREP(OP_LDF_SRC_LMEXTN, src_lmextn) | 341995e101fSJakub Kicinski FIELD_PREP(OP_LDF_DST_LMEXTN, dst_lmextn); 342d9ae7f2bSJakub Kicinski 343d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 344d9ae7f2bSJakub Kicinski } 345d9ae7f2bSJakub Kicinski 346d9ae7f2bSJakub Kicinski static void 347bc8c80a8SJakub Kicinski emit_ld_field_any(struct nfp_prog *nfp_prog, swreg dst, u8 bmask, swreg src, 348bc8c80a8SJakub Kicinski enum shf_sc sc, u8 shift, bool zero) 349d9ae7f2bSJakub Kicinski { 350d9ae7f2bSJakub Kicinski struct nfp_insn_re_regs reg; 351d9ae7f2bSJakub Kicinski int err; 352d9ae7f2bSJakub Kicinski 3532de1be1dSJakub Kicinski /* Note: ld_field is special as it uses one of the src regs as dst */ 3542de1be1dSJakub Kicinski err = swreg_to_restricted(dst, dst, src, ®, true); 355d9ae7f2bSJakub Kicinski if (err) { 356d9ae7f2bSJakub Kicinski nfp_prog->error = err; 357d9ae7f2bSJakub Kicinski return; 358d9ae7f2bSJakub Kicinski } 359d9ae7f2bSJakub Kicinski 360d9ae7f2bSJakub Kicinski __emit_ld_field(nfp_prog, sc, reg.areg, bmask, reg.breg, shift, 361995e101fSJakub Kicinski reg.i8, zero, reg.swap, reg.wr_both, 362995e101fSJakub Kicinski reg.dst_lmextn, reg.src_lmextn); 363d9ae7f2bSJakub Kicinski } 364d9ae7f2bSJakub Kicinski 365d9ae7f2bSJakub Kicinski static void 366b3f868dfSJakub Kicinski emit_ld_field(struct nfp_prog *nfp_prog, swreg dst, u8 bmask, swreg src, 367d9ae7f2bSJakub Kicinski enum shf_sc sc, u8 shift) 368d9ae7f2bSJakub Kicinski { 369bc8c80a8SJakub Kicinski emit_ld_field_any(nfp_prog, dst, bmask, src, sc, shift, false); 370d9ae7f2bSJakub Kicinski } 371d9ae7f2bSJakub Kicinski 3722df03a50SJakub Kicinski static void 3732df03a50SJakub Kicinski __emit_lcsr(struct nfp_prog *nfp_prog, u16 areg, u16 breg, bool wr, u16 addr, 3742df03a50SJakub Kicinski bool dst_lmextn, bool src_lmextn) 3752df03a50SJakub Kicinski { 3762df03a50SJakub Kicinski u64 insn; 3772df03a50SJakub Kicinski 3782df03a50SJakub Kicinski insn = OP_LCSR_BASE | 3792df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_A_SRC, areg) | 3802df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_B_SRC, breg) | 3812df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_WRITE, wr) | 3822df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_ADDR, addr) | 3832df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_SRC_LMEXTN, src_lmextn) | 3842df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_DST_LMEXTN, dst_lmextn); 3852df03a50SJakub Kicinski 3862df03a50SJakub Kicinski nfp_prog_push(nfp_prog, insn); 3872df03a50SJakub Kicinski } 3882df03a50SJakub Kicinski 3892df03a50SJakub Kicinski static void emit_csr_wr(struct nfp_prog *nfp_prog, swreg src, u16 addr) 3902df03a50SJakub Kicinski { 3912df03a50SJakub Kicinski struct nfp_insn_ur_regs reg; 3922df03a50SJakub Kicinski int err; 3932df03a50SJakub Kicinski 3942df03a50SJakub Kicinski /* This instruction takes immeds instead of reg_none() for the ignored 3952df03a50SJakub Kicinski * operand, but we can't encode 2 immeds in one instr with our normal 3962df03a50SJakub Kicinski * swreg infra so if param is an immed, we encode as reg_none() and 3972df03a50SJakub Kicinski * copy the immed to both operands. 3982df03a50SJakub Kicinski */ 3992df03a50SJakub Kicinski if (swreg_type(src) == NN_REG_IMM) { 4002df03a50SJakub Kicinski err = swreg_to_unrestricted(reg_none(), src, reg_none(), ®); 4012df03a50SJakub Kicinski reg.breg = reg.areg; 4022df03a50SJakub Kicinski } else { 4032df03a50SJakub Kicinski err = swreg_to_unrestricted(reg_none(), src, reg_imm(0), ®); 4042df03a50SJakub Kicinski } 4052df03a50SJakub Kicinski if (err) { 4062df03a50SJakub Kicinski nfp_prog->error = err; 4072df03a50SJakub Kicinski return; 4082df03a50SJakub Kicinski } 4092df03a50SJakub Kicinski 4102df03a50SJakub Kicinski __emit_lcsr(nfp_prog, reg.areg, reg.breg, true, addr / 4, 4112df03a50SJakub Kicinski false, reg.src_lmextn); 4122df03a50SJakub Kicinski } 4132df03a50SJakub Kicinski 4141c03e03fSJakub Kicinski static void emit_nop(struct nfp_prog *nfp_prog) 4151c03e03fSJakub Kicinski { 4161c03e03fSJakub Kicinski __emit_immed(nfp_prog, UR_REG_IMM, UR_REG_IMM, 0, 0, 0, 0, 0, 0, 0); 4171c03e03fSJakub Kicinski } 4181c03e03fSJakub Kicinski 419d9ae7f2bSJakub Kicinski /* --- Wrappers --- */ 420d9ae7f2bSJakub Kicinski static bool pack_immed(u32 imm, u16 *val, enum immed_shift *shift) 421d9ae7f2bSJakub Kicinski { 422d9ae7f2bSJakub Kicinski if (!(imm & 0xffff0000)) { 423d9ae7f2bSJakub Kicinski *val = imm; 424d9ae7f2bSJakub Kicinski *shift = IMMED_SHIFT_0B; 425d9ae7f2bSJakub Kicinski } else if (!(imm & 0xff0000ff)) { 426d9ae7f2bSJakub Kicinski *val = imm >> 8; 427d9ae7f2bSJakub Kicinski *shift = IMMED_SHIFT_1B; 428d9ae7f2bSJakub Kicinski } else if (!(imm & 0x0000ffff)) { 429d9ae7f2bSJakub Kicinski *val = imm >> 16; 430d9ae7f2bSJakub Kicinski *shift = IMMED_SHIFT_2B; 431d9ae7f2bSJakub Kicinski } else { 432d9ae7f2bSJakub Kicinski return false; 433d9ae7f2bSJakub Kicinski } 434d9ae7f2bSJakub Kicinski 435d9ae7f2bSJakub Kicinski return true; 436d9ae7f2bSJakub Kicinski } 437d9ae7f2bSJakub Kicinski 438b3f868dfSJakub Kicinski static void wrp_immed(struct nfp_prog *nfp_prog, swreg dst, u32 imm) 439d9ae7f2bSJakub Kicinski { 440d9ae7f2bSJakub Kicinski enum immed_shift shift; 441d9ae7f2bSJakub Kicinski u16 val; 442d9ae7f2bSJakub Kicinski 443d9ae7f2bSJakub Kicinski if (pack_immed(imm, &val, &shift)) { 444d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, val, IMMED_WIDTH_ALL, false, shift); 445d9ae7f2bSJakub Kicinski } else if (pack_immed(~imm, &val, &shift)) { 446d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, val, IMMED_WIDTH_ALL, true, shift); 447d9ae7f2bSJakub Kicinski } else { 448d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, imm & 0xffff, IMMED_WIDTH_ALL, 449d9ae7f2bSJakub Kicinski false, IMMED_SHIFT_0B); 450d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, imm >> 16, IMMED_WIDTH_WORD, 451d9ae7f2bSJakub Kicinski false, IMMED_SHIFT_2B); 452d9ae7f2bSJakub Kicinski } 453d9ae7f2bSJakub Kicinski } 454d9ae7f2bSJakub Kicinski 455d9ae7f2bSJakub Kicinski /* ur_load_imm_any() - encode immediate or use tmp register (unrestricted) 456d9ae7f2bSJakub Kicinski * If the @imm is small enough encode it directly in operand and return 457d9ae7f2bSJakub Kicinski * otherwise load @imm to a spare register and return its encoding. 458d9ae7f2bSJakub Kicinski */ 459b3f868dfSJakub Kicinski static swreg ur_load_imm_any(struct nfp_prog *nfp_prog, u32 imm, swreg tmp_reg) 460d9ae7f2bSJakub Kicinski { 461d9ae7f2bSJakub Kicinski if (FIELD_FIT(UR_REG_IMM_MAX, imm)) 462d9ae7f2bSJakub Kicinski return reg_imm(imm); 463d9ae7f2bSJakub Kicinski 464d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, tmp_reg, imm); 465d9ae7f2bSJakub Kicinski return tmp_reg; 466d9ae7f2bSJakub Kicinski } 467d9ae7f2bSJakub Kicinski 468d9ae7f2bSJakub Kicinski /* re_load_imm_any() - encode immediate or use tmp register (restricted) 469d9ae7f2bSJakub Kicinski * If the @imm is small enough encode it directly in operand and return 470d9ae7f2bSJakub Kicinski * otherwise load @imm to a spare register and return its encoding. 471d9ae7f2bSJakub Kicinski */ 472b3f868dfSJakub Kicinski static swreg re_load_imm_any(struct nfp_prog *nfp_prog, u32 imm, swreg tmp_reg) 473d9ae7f2bSJakub Kicinski { 474d9ae7f2bSJakub Kicinski if (FIELD_FIT(RE_REG_IMM_MAX, imm)) 475d9ae7f2bSJakub Kicinski return reg_imm(imm); 476d9ae7f2bSJakub Kicinski 477d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, tmp_reg, imm); 478d9ae7f2bSJakub Kicinski return tmp_reg; 479d9ae7f2bSJakub Kicinski } 480d9ae7f2bSJakub Kicinski 481ff42bb9fSJakub Kicinski static void wrp_nops(struct nfp_prog *nfp_prog, unsigned int count) 482ff42bb9fSJakub Kicinski { 483ff42bb9fSJakub Kicinski while (count--) 484ff42bb9fSJakub Kicinski emit_nop(nfp_prog); 485ff42bb9fSJakub Kicinski } 486ff42bb9fSJakub Kicinski 487d9ae7f2bSJakub Kicinski static void 488d9ae7f2bSJakub Kicinski wrp_br_special(struct nfp_prog *nfp_prog, enum br_mask mask, 489d9ae7f2bSJakub Kicinski enum br_special special) 490d9ae7f2bSJakub Kicinski { 491d9ae7f2bSJakub Kicinski emit_br(nfp_prog, mask, 0, 0); 492d9ae7f2bSJakub Kicinski 493d9ae7f2bSJakub Kicinski nfp_prog->prog[nfp_prog->prog_len - 1] |= 494d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_SPECIAL, special); 495d9ae7f2bSJakub Kicinski } 496d9ae7f2bSJakub Kicinski 497c000dfb5SJakub Kicinski static void wrp_mov(struct nfp_prog *nfp_prog, swreg dst, swreg src) 498c000dfb5SJakub Kicinski { 499c000dfb5SJakub Kicinski emit_alu(nfp_prog, dst, reg_none(), ALU_OP_NONE, src); 500c000dfb5SJakub Kicinski } 501c000dfb5SJakub Kicinski 502d9ae7f2bSJakub Kicinski static void wrp_reg_mov(struct nfp_prog *nfp_prog, u16 dst, u16 src) 503d9ae7f2bSJakub Kicinski { 504c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_both(dst), reg_b(src)); 505d9ae7f2bSJakub Kicinski } 506d9ae7f2bSJakub Kicinski 507d9ae7f2bSJakub Kicinski static int 5080a793977SJakub Kicinski data_ld(struct nfp_prog *nfp_prog, swreg offset, u8 dst_gpr, int size) 509d9ae7f2bSJakub Kicinski { 510d9ae7f2bSJakub Kicinski unsigned int i; 511d9ae7f2bSJakub Kicinski u16 shift, sz; 512d9ae7f2bSJakub Kicinski 513d9ae7f2bSJakub Kicinski /* We load the value from the address indicated in @offset and then 514d9ae7f2bSJakub Kicinski * shift out the data we don't need. Note: this is big endian! 515d9ae7f2bSJakub Kicinski */ 5160a793977SJakub Kicinski sz = max(size, 4); 517d9ae7f2bSJakub Kicinski shift = size < 4 ? 4 - size : 0; 518d9ae7f2bSJakub Kicinski 5190a793977SJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_READ8, CMD_MODE_32b, 0, 5200a793977SJakub Kicinski pptr_reg(nfp_prog), offset, sz - 1, true); 5210a793977SJakub Kicinski 5220a793977SJakub Kicinski i = 0; 5230a793977SJakub Kicinski if (shift) 5240a793977SJakub Kicinski emit_shf(nfp_prog, reg_both(dst_gpr), reg_none(), SHF_OP_NONE, 5250a793977SJakub Kicinski reg_xfer(0), SHF_SC_R_SHF, shift * 8); 5260a793977SJakub Kicinski else 5270a793977SJakub Kicinski for (; i * 4 < size; i++) 5280a793977SJakub Kicinski wrp_mov(nfp_prog, reg_both(dst_gpr + i), reg_xfer(i)); 5290a793977SJakub Kicinski 5300a793977SJakub Kicinski if (i < 2) 5310a793977SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst_gpr + 1), 0); 5320a793977SJakub Kicinski 5330a793977SJakub Kicinski return 0; 5340a793977SJakub Kicinski } 5350a793977SJakub Kicinski 5360a793977SJakub Kicinski static int 5372ca71441SJakub Kicinski data_ld_host_order(struct nfp_prog *nfp_prog, u8 src_gpr, swreg offset, 5382ca71441SJakub Kicinski u8 dst_gpr, int size) 5392ca71441SJakub Kicinski { 5402ca71441SJakub Kicinski unsigned int i; 5412ca71441SJakub Kicinski u8 mask, sz; 5422ca71441SJakub Kicinski 5432ca71441SJakub Kicinski /* We load the value from the address indicated in @offset and then 5442ca71441SJakub Kicinski * mask out the data we don't need. Note: this is little endian! 5452ca71441SJakub Kicinski */ 5462ca71441SJakub Kicinski sz = max(size, 4); 5472ca71441SJakub Kicinski mask = size < 4 ? GENMASK(size - 1, 0) : 0; 5482ca71441SJakub Kicinski 5492ca71441SJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_READ32_SWAP, CMD_MODE_32b, 0, 5502ca71441SJakub Kicinski reg_a(src_gpr), offset, sz / 4 - 1, true); 5512ca71441SJakub Kicinski 5522ca71441SJakub Kicinski i = 0; 5532ca71441SJakub Kicinski if (mask) 5542ca71441SJakub Kicinski emit_ld_field_any(nfp_prog, reg_both(dst_gpr), mask, 5552ca71441SJakub Kicinski reg_xfer(0), SHF_SC_NONE, 0, true); 5562ca71441SJakub Kicinski else 5572ca71441SJakub Kicinski for (; i * 4 < size; i++) 5582ca71441SJakub Kicinski wrp_mov(nfp_prog, reg_both(dst_gpr + i), reg_xfer(i)); 5592ca71441SJakub Kicinski 5602ca71441SJakub Kicinski if (i < 2) 5612ca71441SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst_gpr + 1), 0); 5622ca71441SJakub Kicinski 5632ca71441SJakub Kicinski return 0; 5642ca71441SJakub Kicinski } 5652ca71441SJakub Kicinski 5662ca71441SJakub Kicinski static int 5670a793977SJakub Kicinski construct_data_ind_ld(struct nfp_prog *nfp_prog, u16 offset, u16 src, u8 size) 5680a793977SJakub Kicinski { 5690a793977SJakub Kicinski swreg tmp_reg; 5700a793977SJakub Kicinski 571d9ae7f2bSJakub Kicinski /* Calculate the true offset (src_reg + imm) */ 572d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, offset, imm_b(nfp_prog)); 5730a793977SJakub Kicinski emit_alu(nfp_prog, imm_both(nfp_prog), reg_a(src), ALU_OP_ADD, tmp_reg); 5740a793977SJakub Kicinski 575d9ae7f2bSJakub Kicinski /* Check packet length (size guaranteed to fit b/c it's u8) */ 576d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_a(nfp_prog), 577d9ae7f2bSJakub Kicinski imm_a(nfp_prog), ALU_OP_ADD, reg_imm(size)); 578d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 57918e53b6cSJakub Kicinski plen_reg(nfp_prog), ALU_OP_SUB, imm_a(nfp_prog)); 580d9ae7f2bSJakub Kicinski wrp_br_special(nfp_prog, BR_BLO, OP_BR_GO_ABORT); 5810a793977SJakub Kicinski 582d9ae7f2bSJakub Kicinski /* Load data */ 5830a793977SJakub Kicinski return data_ld(nfp_prog, imm_b(nfp_prog), 0, size); 584d9ae7f2bSJakub Kicinski } 585d9ae7f2bSJakub Kicinski 586d9ae7f2bSJakub Kicinski static int construct_data_ld(struct nfp_prog *nfp_prog, u16 offset, u8 size) 587d9ae7f2bSJakub Kicinski { 5880a793977SJakub Kicinski swreg tmp_reg; 5890a793977SJakub Kicinski 5900a793977SJakub Kicinski /* Check packet length */ 5910a793977SJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, offset + size, imm_a(nfp_prog)); 5920a793977SJakub Kicinski emit_alu(nfp_prog, reg_none(), plen_reg(nfp_prog), ALU_OP_SUB, tmp_reg); 5930a793977SJakub Kicinski wrp_br_special(nfp_prog, BR_BLO, OP_BR_GO_ABORT); 5940a793977SJakub Kicinski 5950a793977SJakub Kicinski /* Load data */ 5960a793977SJakub Kicinski tmp_reg = re_load_imm_any(nfp_prog, offset, imm_b(nfp_prog)); 5970a793977SJakub Kicinski return data_ld(nfp_prog, tmp_reg, 0, size); 598d9ae7f2bSJakub Kicinski } 599d9ae7f2bSJakub Kicinski 600e663fe38SJakub Kicinski static int 601e663fe38SJakub Kicinski data_stx_host_order(struct nfp_prog *nfp_prog, u8 dst_gpr, swreg offset, 602e663fe38SJakub Kicinski u8 src_gpr, u8 size) 603e663fe38SJakub Kicinski { 604e663fe38SJakub Kicinski unsigned int i; 605e663fe38SJakub Kicinski 606e663fe38SJakub Kicinski for (i = 0; i * 4 < size; i++) 607e663fe38SJakub Kicinski wrp_mov(nfp_prog, reg_xfer(i), reg_a(src_gpr + i)); 608e663fe38SJakub Kicinski 609e663fe38SJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_WRITE8_SWAP, CMD_MODE_32b, 0, 610e663fe38SJakub Kicinski reg_a(dst_gpr), offset, size - 1, true); 611e663fe38SJakub Kicinski 612e663fe38SJakub Kicinski return 0; 613e663fe38SJakub Kicinski } 614e663fe38SJakub Kicinski 615e663fe38SJakub Kicinski static int 616e663fe38SJakub Kicinski data_st_host_order(struct nfp_prog *nfp_prog, u8 dst_gpr, swreg offset, 617e663fe38SJakub Kicinski u64 imm, u8 size) 618e663fe38SJakub Kicinski { 619e663fe38SJakub Kicinski wrp_immed(nfp_prog, reg_xfer(0), imm); 620e663fe38SJakub Kicinski if (size == 8) 621e663fe38SJakub Kicinski wrp_immed(nfp_prog, reg_xfer(1), imm >> 32); 622e663fe38SJakub Kicinski 623e663fe38SJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_WRITE8_SWAP, CMD_MODE_32b, 0, 624e663fe38SJakub Kicinski reg_a(dst_gpr), offset, size - 1, true); 625e663fe38SJakub Kicinski 626e663fe38SJakub Kicinski return 0; 627e663fe38SJakub Kicinski } 628e663fe38SJakub Kicinski 629ee9133a8SJakub Kicinski typedef int 630ee9133a8SJakub Kicinski (*lmem_step)(struct nfp_prog *nfp_prog, u8 gpr, u8 gpr_byte, s32 off, 6312df03a50SJakub Kicinski unsigned int size, bool first, bool new_gpr, bool last, bool lm3, 6322df03a50SJakub Kicinski bool needs_inc); 633a82b23fbSJakub Kicinski 634a82b23fbSJakub Kicinski static int 635a82b23fbSJakub Kicinski wrp_lmem_load(struct nfp_prog *nfp_prog, u8 dst, u8 dst_byte, s32 off, 6362df03a50SJakub Kicinski unsigned int size, bool first, bool new_gpr, bool last, bool lm3, 6372df03a50SJakub Kicinski bool needs_inc) 638a82b23fbSJakub Kicinski { 6392df03a50SJakub Kicinski bool should_inc = needs_inc && new_gpr && !last; 640a82b23fbSJakub Kicinski u32 idx, src_byte; 641a82b23fbSJakub Kicinski enum shf_sc sc; 642a82b23fbSJakub Kicinski swreg reg; 643a82b23fbSJakub Kicinski int shf; 644a82b23fbSJakub Kicinski u8 mask; 645a82b23fbSJakub Kicinski 646a82b23fbSJakub Kicinski if (WARN_ON_ONCE(dst_byte + size > 4 || off % 4 + size > 4)) 647a82b23fbSJakub Kicinski return -EOPNOTSUPP; 648a82b23fbSJakub Kicinski 649a82b23fbSJakub Kicinski idx = off / 4; 650a82b23fbSJakub Kicinski 651a82b23fbSJakub Kicinski /* Move the entire word */ 652a82b23fbSJakub Kicinski if (size == 4) { 6532df03a50SJakub Kicinski wrp_mov(nfp_prog, reg_both(dst), 6542df03a50SJakub Kicinski should_inc ? reg_lm_inc(3) : reg_lm(lm3 ? 3 : 0, idx)); 655a82b23fbSJakub Kicinski return 0; 656a82b23fbSJakub Kicinski } 657a82b23fbSJakub Kicinski 6582df03a50SJakub Kicinski if (WARN_ON_ONCE(lm3 && idx > RE_REG_LM_IDX_MAX)) 6592df03a50SJakub Kicinski return -EOPNOTSUPP; 6602df03a50SJakub Kicinski 661a82b23fbSJakub Kicinski src_byte = off % 4; 662a82b23fbSJakub Kicinski 663a82b23fbSJakub Kicinski mask = (1 << size) - 1; 664a82b23fbSJakub Kicinski mask <<= dst_byte; 665a82b23fbSJakub Kicinski 666a82b23fbSJakub Kicinski if (WARN_ON_ONCE(mask > 0xf)) 667a82b23fbSJakub Kicinski return -EOPNOTSUPP; 668a82b23fbSJakub Kicinski 669a82b23fbSJakub Kicinski shf = abs(src_byte - dst_byte) * 8; 670a82b23fbSJakub Kicinski if (src_byte == dst_byte) { 671a82b23fbSJakub Kicinski sc = SHF_SC_NONE; 672a82b23fbSJakub Kicinski } else if (src_byte < dst_byte) { 673a82b23fbSJakub Kicinski shf = 32 - shf; 674a82b23fbSJakub Kicinski sc = SHF_SC_L_SHF; 675a82b23fbSJakub Kicinski } else { 676a82b23fbSJakub Kicinski sc = SHF_SC_R_SHF; 677a82b23fbSJakub Kicinski } 678a82b23fbSJakub Kicinski 679a82b23fbSJakub Kicinski /* ld_field can address fewer indexes, if offset too large do RMW. 680a82b23fbSJakub Kicinski * Because we RMV twice we waste 2 cycles on unaligned 8 byte writes. 681a82b23fbSJakub Kicinski */ 682a82b23fbSJakub Kicinski if (idx <= RE_REG_LM_IDX_MAX) { 6832df03a50SJakub Kicinski reg = reg_lm(lm3 ? 3 : 0, idx); 684a82b23fbSJakub Kicinski } else { 685a82b23fbSJakub Kicinski reg = imm_a(nfp_prog); 6869a90c83cSJakub Kicinski /* If it's not the first part of the load and we start a new GPR 6879a90c83cSJakub Kicinski * that means we are loading a second part of the LMEM word into 6889a90c83cSJakub Kicinski * a new GPR. IOW we've already looked that LMEM word and 6899a90c83cSJakub Kicinski * therefore it has been loaded into imm_a(). 6909a90c83cSJakub Kicinski */ 6919a90c83cSJakub Kicinski if (first || !new_gpr) 692a82b23fbSJakub Kicinski wrp_mov(nfp_prog, reg, reg_lm(0, idx)); 693a82b23fbSJakub Kicinski } 694a82b23fbSJakub Kicinski 695a82b23fbSJakub Kicinski emit_ld_field_any(nfp_prog, reg_both(dst), mask, reg, sc, shf, new_gpr); 696a82b23fbSJakub Kicinski 6972df03a50SJakub Kicinski if (should_inc) 6982df03a50SJakub Kicinski wrp_mov(nfp_prog, reg_none(), reg_lm_inc(3)); 6992df03a50SJakub Kicinski 700a82b23fbSJakub Kicinski return 0; 701a82b23fbSJakub Kicinski } 702ee9133a8SJakub Kicinski 703ee9133a8SJakub Kicinski static int 704ee9133a8SJakub Kicinski wrp_lmem_store(struct nfp_prog *nfp_prog, u8 src, u8 src_byte, s32 off, 7052df03a50SJakub Kicinski unsigned int size, bool first, bool new_gpr, bool last, bool lm3, 7062df03a50SJakub Kicinski bool needs_inc) 707ee9133a8SJakub Kicinski { 7082df03a50SJakub Kicinski bool should_inc = needs_inc && new_gpr && !last; 709ee9133a8SJakub Kicinski u32 idx, dst_byte; 710ee9133a8SJakub Kicinski enum shf_sc sc; 711ee9133a8SJakub Kicinski swreg reg; 712ee9133a8SJakub Kicinski int shf; 713ee9133a8SJakub Kicinski u8 mask; 714ee9133a8SJakub Kicinski 715ee9133a8SJakub Kicinski if (WARN_ON_ONCE(src_byte + size > 4 || off % 4 + size > 4)) 716ee9133a8SJakub Kicinski return -EOPNOTSUPP; 717ee9133a8SJakub Kicinski 718ee9133a8SJakub Kicinski idx = off / 4; 719ee9133a8SJakub Kicinski 720ee9133a8SJakub Kicinski /* Move the entire word */ 721ee9133a8SJakub Kicinski if (size == 4) { 7222df03a50SJakub Kicinski wrp_mov(nfp_prog, 7232df03a50SJakub Kicinski should_inc ? reg_lm_inc(3) : reg_lm(lm3 ? 3 : 0, idx), 7242df03a50SJakub Kicinski reg_b(src)); 725ee9133a8SJakub Kicinski return 0; 726ee9133a8SJakub Kicinski } 727ee9133a8SJakub Kicinski 7282df03a50SJakub Kicinski if (WARN_ON_ONCE(lm3 && idx > RE_REG_LM_IDX_MAX)) 7292df03a50SJakub Kicinski return -EOPNOTSUPP; 7302df03a50SJakub Kicinski 731ee9133a8SJakub Kicinski dst_byte = off % 4; 732ee9133a8SJakub Kicinski 733ee9133a8SJakub Kicinski mask = (1 << size) - 1; 734ee9133a8SJakub Kicinski mask <<= dst_byte; 735ee9133a8SJakub Kicinski 736ee9133a8SJakub Kicinski if (WARN_ON_ONCE(mask > 0xf)) 737ee9133a8SJakub Kicinski return -EOPNOTSUPP; 738ee9133a8SJakub Kicinski 739ee9133a8SJakub Kicinski shf = abs(src_byte - dst_byte) * 8; 740ee9133a8SJakub Kicinski if (src_byte == dst_byte) { 741ee9133a8SJakub Kicinski sc = SHF_SC_NONE; 742ee9133a8SJakub Kicinski } else if (src_byte < dst_byte) { 743ee9133a8SJakub Kicinski shf = 32 - shf; 744ee9133a8SJakub Kicinski sc = SHF_SC_L_SHF; 745ee9133a8SJakub Kicinski } else { 746ee9133a8SJakub Kicinski sc = SHF_SC_R_SHF; 747ee9133a8SJakub Kicinski } 748ee9133a8SJakub Kicinski 749ee9133a8SJakub Kicinski /* ld_field can address fewer indexes, if offset too large do RMW. 750ee9133a8SJakub Kicinski * Because we RMV twice we waste 2 cycles on unaligned 8 byte writes. 751ee9133a8SJakub Kicinski */ 752ee9133a8SJakub Kicinski if (idx <= RE_REG_LM_IDX_MAX) { 7532df03a50SJakub Kicinski reg = reg_lm(lm3 ? 3 : 0, idx); 754ee9133a8SJakub Kicinski } else { 755ee9133a8SJakub Kicinski reg = imm_a(nfp_prog); 7569a90c83cSJakub Kicinski /* Only first and last LMEM locations are going to need RMW, 7579a90c83cSJakub Kicinski * the middle location will be overwritten fully. 7589a90c83cSJakub Kicinski */ 7599a90c83cSJakub Kicinski if (first || last) 760ee9133a8SJakub Kicinski wrp_mov(nfp_prog, reg, reg_lm(0, idx)); 761ee9133a8SJakub Kicinski } 762ee9133a8SJakub Kicinski 763ee9133a8SJakub Kicinski emit_ld_field(nfp_prog, reg, mask, reg_b(src), sc, shf); 764ee9133a8SJakub Kicinski 7659a90c83cSJakub Kicinski if (new_gpr || last) { 766ee9133a8SJakub Kicinski if (idx > RE_REG_LM_IDX_MAX) 767ee9133a8SJakub Kicinski wrp_mov(nfp_prog, reg_lm(0, idx), reg); 7682df03a50SJakub Kicinski if (should_inc) 7692df03a50SJakub Kicinski wrp_mov(nfp_prog, reg_none(), reg_lm_inc(3)); 7709a90c83cSJakub Kicinski } 771ee9133a8SJakub Kicinski 772ee9133a8SJakub Kicinski return 0; 773ee9133a8SJakub Kicinski } 774ee9133a8SJakub Kicinski 775ee9133a8SJakub Kicinski static int 776ee9133a8SJakub Kicinski mem_op_stack(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 777b14157eeSJakub Kicinski unsigned int size, unsigned int ptr_off, u8 gpr, u8 ptr_gpr, 778b14157eeSJakub Kicinski bool clr_gpr, lmem_step step) 779ee9133a8SJakub Kicinski { 780d3488480SJakub Kicinski s32 off = nfp_prog->stack_depth + meta->insn.off + ptr_off; 7819a90c83cSJakub Kicinski bool first = true, last; 7822df03a50SJakub Kicinski bool needs_inc = false; 7832df03a50SJakub Kicinski swreg stack_off_reg; 784a82b23fbSJakub Kicinski u8 prev_gpr = 255; 785ee9133a8SJakub Kicinski u32 gpr_byte = 0; 7862df03a50SJakub Kicinski bool lm3 = true; 787ee9133a8SJakub Kicinski int ret; 788ee9133a8SJakub Kicinski 789b14157eeSJakub Kicinski if (meta->ptr_not_const) { 790b14157eeSJakub Kicinski /* Use of the last encountered ptr_off is OK, they all have 791b14157eeSJakub Kicinski * the same alignment. Depend on low bits of value being 792b14157eeSJakub Kicinski * discarded when written to LMaddr register. 793b14157eeSJakub Kicinski */ 794b14157eeSJakub Kicinski stack_off_reg = ur_load_imm_any(nfp_prog, meta->insn.off, 795b14157eeSJakub Kicinski stack_imm(nfp_prog)); 796b14157eeSJakub Kicinski 797b14157eeSJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), 798b14157eeSJakub Kicinski reg_a(ptr_gpr), ALU_OP_ADD, stack_off_reg); 799b14157eeSJakub Kicinski 800b14157eeSJakub Kicinski needs_inc = true; 801b14157eeSJakub Kicinski } else if (off + size <= 64) { 8022df03a50SJakub Kicinski /* We can reach bottom 64B with LMaddr0 */ 8032df03a50SJakub Kicinski lm3 = false; 8042df03a50SJakub Kicinski } else if (round_down(off, 32) == round_down(off + size - 1, 32)) { 8052df03a50SJakub Kicinski /* We have to set up a new pointer. If we know the offset 8062df03a50SJakub Kicinski * and the entire access falls into a single 32 byte aligned 8072df03a50SJakub Kicinski * window we won't have to increment the LM pointer. 8082df03a50SJakub Kicinski * The 32 byte alignment is imporant because offset is ORed in 8092df03a50SJakub Kicinski * not added when doing *l$indexN[off]. 8102df03a50SJakub Kicinski */ 8112df03a50SJakub Kicinski stack_off_reg = ur_load_imm_any(nfp_prog, round_down(off, 32), 8122df03a50SJakub Kicinski stack_imm(nfp_prog)); 8132df03a50SJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), 8142df03a50SJakub Kicinski stack_reg(nfp_prog), ALU_OP_ADD, stack_off_reg); 8152df03a50SJakub Kicinski 8162df03a50SJakub Kicinski off %= 32; 8172df03a50SJakub Kicinski } else { 8182df03a50SJakub Kicinski stack_off_reg = ur_load_imm_any(nfp_prog, round_down(off, 4), 8192df03a50SJakub Kicinski stack_imm(nfp_prog)); 8202df03a50SJakub Kicinski 8212df03a50SJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), 8222df03a50SJakub Kicinski stack_reg(nfp_prog), ALU_OP_ADD, stack_off_reg); 8232df03a50SJakub Kicinski 8242df03a50SJakub Kicinski needs_inc = true; 8252df03a50SJakub Kicinski } 8262df03a50SJakub Kicinski if (lm3) { 8272df03a50SJakub Kicinski emit_csr_wr(nfp_prog, imm_b(nfp_prog), NFP_CSR_ACT_LM_ADDR3); 8282df03a50SJakub Kicinski /* For size < 4 one slot will be filled by zeroing of upper. */ 8292df03a50SJakub Kicinski wrp_nops(nfp_prog, clr_gpr && size < 8 ? 2 : 3); 8302df03a50SJakub Kicinski } 8312df03a50SJakub Kicinski 832a82b23fbSJakub Kicinski if (clr_gpr && size < 8) 833a82b23fbSJakub Kicinski wrp_immed(nfp_prog, reg_both(gpr + 1), 0); 834a82b23fbSJakub Kicinski 835ee9133a8SJakub Kicinski while (size) { 836ee9133a8SJakub Kicinski u32 slice_end; 837ee9133a8SJakub Kicinski u8 slice_size; 838ee9133a8SJakub Kicinski 839ee9133a8SJakub Kicinski slice_size = min(size, 4 - gpr_byte); 840ee9133a8SJakub Kicinski slice_end = min(off + slice_size, round_up(off + 1, 4)); 841ee9133a8SJakub Kicinski slice_size = slice_end - off; 842ee9133a8SJakub Kicinski 8439a90c83cSJakub Kicinski last = slice_size == size; 8449a90c83cSJakub Kicinski 8452df03a50SJakub Kicinski if (needs_inc) 8462df03a50SJakub Kicinski off %= 4; 8472df03a50SJakub Kicinski 848a82b23fbSJakub Kicinski ret = step(nfp_prog, gpr, gpr_byte, off, slice_size, 8492df03a50SJakub Kicinski first, gpr != prev_gpr, last, lm3, needs_inc); 850ee9133a8SJakub Kicinski if (ret) 851ee9133a8SJakub Kicinski return ret; 852ee9133a8SJakub Kicinski 853a82b23fbSJakub Kicinski prev_gpr = gpr; 8549a90c83cSJakub Kicinski first = false; 8559a90c83cSJakub Kicinski 856ee9133a8SJakub Kicinski gpr_byte += slice_size; 857ee9133a8SJakub Kicinski if (gpr_byte >= 4) { 858ee9133a8SJakub Kicinski gpr_byte -= 4; 859ee9133a8SJakub Kicinski gpr++; 860ee9133a8SJakub Kicinski } 861ee9133a8SJakub Kicinski 862ee9133a8SJakub Kicinski size -= slice_size; 863ee9133a8SJakub Kicinski off += slice_size; 864ee9133a8SJakub Kicinski } 865ee9133a8SJakub Kicinski 866ee9133a8SJakub Kicinski return 0; 867ee9133a8SJakub Kicinski } 868ee9133a8SJakub Kicinski 869d9ae7f2bSJakub Kicinski static void 870d9ae7f2bSJakub Kicinski wrp_alu_imm(struct nfp_prog *nfp_prog, u8 dst, enum alu_op alu_op, u32 imm) 871d9ae7f2bSJakub Kicinski { 872b3f868dfSJakub Kicinski swreg tmp_reg; 873d9ae7f2bSJakub Kicinski 874d9ae7f2bSJakub Kicinski if (alu_op == ALU_OP_AND) { 875d9ae7f2bSJakub Kicinski if (!imm) 876d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), 0); 877d9ae7f2bSJakub Kicinski if (!imm || !~imm) 878d9ae7f2bSJakub Kicinski return; 879d9ae7f2bSJakub Kicinski } 880d9ae7f2bSJakub Kicinski if (alu_op == ALU_OP_OR) { 881d9ae7f2bSJakub Kicinski if (!~imm) 882d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), ~0U); 883d9ae7f2bSJakub Kicinski if (!imm || !~imm) 884d9ae7f2bSJakub Kicinski return; 885d9ae7f2bSJakub Kicinski } 886d9ae7f2bSJakub Kicinski if (alu_op == ALU_OP_XOR) { 887d9ae7f2bSJakub Kicinski if (!~imm) 888d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_none(), 8895d42ced1SJiong Wang ALU_OP_NOT, reg_b(dst)); 890d9ae7f2bSJakub Kicinski if (!imm || !~imm) 891d9ae7f2bSJakub Kicinski return; 892d9ae7f2bSJakub Kicinski } 893d9ae7f2bSJakub Kicinski 894d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm, imm_b(nfp_prog)); 895d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_a(dst), alu_op, tmp_reg); 896d9ae7f2bSJakub Kicinski } 897d9ae7f2bSJakub Kicinski 898d9ae7f2bSJakub Kicinski static int 899d9ae7f2bSJakub Kicinski wrp_alu64_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 900d9ae7f2bSJakub Kicinski enum alu_op alu_op, bool skip) 901d9ae7f2bSJakub Kicinski { 902d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 903d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 904d9ae7f2bSJakub Kicinski 905d9ae7f2bSJakub Kicinski if (skip) { 906d9ae7f2bSJakub Kicinski meta->skip = true; 907d9ae7f2bSJakub Kicinski return 0; 908d9ae7f2bSJakub Kicinski } 909d9ae7f2bSJakub Kicinski 910d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, alu_op, imm & ~0U); 911d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2 + 1, alu_op, imm >> 32); 912d9ae7f2bSJakub Kicinski 913d9ae7f2bSJakub Kicinski return 0; 914d9ae7f2bSJakub Kicinski } 915d9ae7f2bSJakub Kicinski 916d9ae7f2bSJakub Kicinski static int 917d9ae7f2bSJakub Kicinski wrp_alu64_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 918d9ae7f2bSJakub Kicinski enum alu_op alu_op) 919d9ae7f2bSJakub Kicinski { 920d9ae7f2bSJakub Kicinski u8 dst = meta->insn.dst_reg * 2, src = meta->insn.src_reg * 2; 921d9ae7f2bSJakub Kicinski 922d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_a(dst), alu_op, reg_b(src)); 923d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst + 1), 924d9ae7f2bSJakub Kicinski reg_a(dst + 1), alu_op, reg_b(src + 1)); 925d9ae7f2bSJakub Kicinski 926d9ae7f2bSJakub Kicinski return 0; 927d9ae7f2bSJakub Kicinski } 928d9ae7f2bSJakub Kicinski 929d9ae7f2bSJakub Kicinski static int 930d9ae7f2bSJakub Kicinski wrp_alu32_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 931d9ae7f2bSJakub Kicinski enum alu_op alu_op, bool skip) 932d9ae7f2bSJakub Kicinski { 933d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 934d9ae7f2bSJakub Kicinski 935d9ae7f2bSJakub Kicinski if (skip) { 936d9ae7f2bSJakub Kicinski meta->skip = true; 937d9ae7f2bSJakub Kicinski return 0; 938d9ae7f2bSJakub Kicinski } 939d9ae7f2bSJakub Kicinski 940d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, alu_op, insn->imm); 941d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 942d9ae7f2bSJakub Kicinski 943d9ae7f2bSJakub Kicinski return 0; 944d9ae7f2bSJakub Kicinski } 945d9ae7f2bSJakub Kicinski 946d9ae7f2bSJakub Kicinski static int 947d9ae7f2bSJakub Kicinski wrp_alu32_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 948d9ae7f2bSJakub Kicinski enum alu_op alu_op) 949d9ae7f2bSJakub Kicinski { 950d9ae7f2bSJakub Kicinski u8 dst = meta->insn.dst_reg * 2, src = meta->insn.src_reg * 2; 951d9ae7f2bSJakub Kicinski 952d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_a(dst), alu_op, reg_b(src)); 953d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 954d9ae7f2bSJakub Kicinski 955d9ae7f2bSJakub Kicinski return 0; 956d9ae7f2bSJakub Kicinski } 957d9ae7f2bSJakub Kicinski 958d9ae7f2bSJakub Kicinski static void 959d9ae7f2bSJakub Kicinski wrp_test_reg_one(struct nfp_prog *nfp_prog, u8 dst, enum alu_op alu_op, u8 src, 960d9ae7f2bSJakub Kicinski enum br_mask br_mask, u16 off) 961d9ae7f2bSJakub Kicinski { 962d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(dst), alu_op, reg_b(src)); 963d9ae7f2bSJakub Kicinski emit_br(nfp_prog, br_mask, off, 0); 964d9ae7f2bSJakub Kicinski } 965d9ae7f2bSJakub Kicinski 966d9ae7f2bSJakub Kicinski static int 967d9ae7f2bSJakub Kicinski wrp_test_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 968d9ae7f2bSJakub Kicinski enum alu_op alu_op, enum br_mask br_mask) 969d9ae7f2bSJakub Kicinski { 970d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 971d9ae7f2bSJakub Kicinski 972d9ae7f2bSJakub Kicinski wrp_test_reg_one(nfp_prog, insn->dst_reg * 2, alu_op, 973d9ae7f2bSJakub Kicinski insn->src_reg * 2, br_mask, insn->off); 974d9ae7f2bSJakub Kicinski wrp_test_reg_one(nfp_prog, insn->dst_reg * 2 + 1, alu_op, 975d9ae7f2bSJakub Kicinski insn->src_reg * 2 + 1, br_mask, insn->off); 976d9ae7f2bSJakub Kicinski 977d9ae7f2bSJakub Kicinski return 0; 978d9ae7f2bSJakub Kicinski } 979d9ae7f2bSJakub Kicinski 980d9ae7f2bSJakub Kicinski static int 981d9ae7f2bSJakub Kicinski wrp_cmp_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 982d9ae7f2bSJakub Kicinski enum br_mask br_mask, bool swap) 983d9ae7f2bSJakub Kicinski { 984d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 985d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 986d9ae7f2bSJakub Kicinski u8 reg = insn->dst_reg * 2; 987b3f868dfSJakub Kicinski swreg tmp_reg; 988d9ae7f2bSJakub Kicinski 989d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 990d9ae7f2bSJakub Kicinski if (!swap) 991d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(reg), ALU_OP_SUB, tmp_reg); 992d9ae7f2bSJakub Kicinski else 993d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), tmp_reg, ALU_OP_SUB, reg_a(reg)); 994d9ae7f2bSJakub Kicinski 995d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 996d9ae7f2bSJakub Kicinski if (!swap) 997d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 998d9ae7f2bSJakub Kicinski reg_a(reg + 1), ALU_OP_SUB_C, tmp_reg); 999d9ae7f2bSJakub Kicinski else 1000d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1001d9ae7f2bSJakub Kicinski tmp_reg, ALU_OP_SUB_C, reg_a(reg + 1)); 1002d9ae7f2bSJakub Kicinski 1003d9ae7f2bSJakub Kicinski emit_br(nfp_prog, br_mask, insn->off, 0); 1004d9ae7f2bSJakub Kicinski 1005d9ae7f2bSJakub Kicinski return 0; 1006d9ae7f2bSJakub Kicinski } 1007d9ae7f2bSJakub Kicinski 1008d9ae7f2bSJakub Kicinski static int 1009d9ae7f2bSJakub Kicinski wrp_cmp_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1010d9ae7f2bSJakub Kicinski enum br_mask br_mask, bool swap) 1011d9ae7f2bSJakub Kicinski { 1012d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 101326fa818dSJakub Kicinski u8 areg, breg; 101426fa818dSJakub Kicinski 101526fa818dSJakub Kicinski areg = insn->dst_reg * 2; 101626fa818dSJakub Kicinski breg = insn->src_reg * 2; 1017d9ae7f2bSJakub Kicinski 1018d9ae7f2bSJakub Kicinski if (swap) { 1019d9ae7f2bSJakub Kicinski areg ^= breg; 1020d9ae7f2bSJakub Kicinski breg ^= areg; 1021d9ae7f2bSJakub Kicinski areg ^= breg; 1022d9ae7f2bSJakub Kicinski } 1023d9ae7f2bSJakub Kicinski 1024d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(areg), ALU_OP_SUB, reg_b(breg)); 1025d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1026d9ae7f2bSJakub Kicinski reg_a(areg + 1), ALU_OP_SUB_C, reg_b(breg + 1)); 1027d9ae7f2bSJakub Kicinski emit_br(nfp_prog, br_mask, insn->off, 0); 1028d9ae7f2bSJakub Kicinski 1029d9ae7f2bSJakub Kicinski return 0; 1030d9ae7f2bSJakub Kicinski } 1031d9ae7f2bSJakub Kicinski 10323119d1fdSJakub Kicinski static void wrp_end32(struct nfp_prog *nfp_prog, swreg reg_in, u8 gpr_out) 10333119d1fdSJakub Kicinski { 10343119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr_out), 0xf, reg_in, 10353119d1fdSJakub Kicinski SHF_SC_R_ROT, 8); 10363119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr_out), 0x5, reg_a(gpr_out), 10373119d1fdSJakub Kicinski SHF_SC_R_ROT, 16); 10383119d1fdSJakub Kicinski } 10393119d1fdSJakub Kicinski 1040d9ae7f2bSJakub Kicinski /* --- Callbacks --- */ 1041d9ae7f2bSJakub Kicinski static int mov_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1042d9ae7f2bSJakub Kicinski { 1043d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1044b14157eeSJakub Kicinski u8 dst = insn->dst_reg * 2; 1045b14157eeSJakub Kicinski u8 src = insn->src_reg * 2; 1046d9ae7f2bSJakub Kicinski 1047b14157eeSJakub Kicinski if (insn->src_reg == BPF_REG_10) { 1048b14157eeSJakub Kicinski swreg stack_depth_reg; 1049b14157eeSJakub Kicinski 1050b14157eeSJakub Kicinski stack_depth_reg = ur_load_imm_any(nfp_prog, 1051b14157eeSJakub Kicinski nfp_prog->stack_depth, 1052b14157eeSJakub Kicinski stack_imm(nfp_prog)); 1053b14157eeSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), 1054b14157eeSJakub Kicinski stack_reg(nfp_prog), ALU_OP_ADD, stack_depth_reg); 1055b14157eeSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst + 1), 0); 1056b14157eeSJakub Kicinski } else { 1057b14157eeSJakub Kicinski wrp_reg_mov(nfp_prog, dst, src); 1058b14157eeSJakub Kicinski wrp_reg_mov(nfp_prog, dst + 1, src + 1); 1059b14157eeSJakub Kicinski } 1060d9ae7f2bSJakub Kicinski 1061d9ae7f2bSJakub Kicinski return 0; 1062d9ae7f2bSJakub Kicinski } 1063d9ae7f2bSJakub Kicinski 1064d9ae7f2bSJakub Kicinski static int mov_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1065d9ae7f2bSJakub Kicinski { 1066d9ae7f2bSJakub Kicinski u64 imm = meta->insn.imm; /* sign extend */ 1067d9ae7f2bSJakub Kicinski 1068d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2), imm & ~0U); 1069d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), imm >> 32); 1070d9ae7f2bSJakub Kicinski 1071d9ae7f2bSJakub Kicinski return 0; 1072d9ae7f2bSJakub Kicinski } 1073d9ae7f2bSJakub Kicinski 1074d9ae7f2bSJakub Kicinski static int xor_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1075d9ae7f2bSJakub Kicinski { 1076d9ae7f2bSJakub Kicinski return wrp_alu64_reg(nfp_prog, meta, ALU_OP_XOR); 1077d9ae7f2bSJakub Kicinski } 1078d9ae7f2bSJakub Kicinski 1079d9ae7f2bSJakub Kicinski static int xor_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1080d9ae7f2bSJakub Kicinski { 1081d9ae7f2bSJakub Kicinski return wrp_alu64_imm(nfp_prog, meta, ALU_OP_XOR, !meta->insn.imm); 1082d9ae7f2bSJakub Kicinski } 1083d9ae7f2bSJakub Kicinski 1084d9ae7f2bSJakub Kicinski static int and_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1085d9ae7f2bSJakub Kicinski { 1086d9ae7f2bSJakub Kicinski return wrp_alu64_reg(nfp_prog, meta, ALU_OP_AND); 1087d9ae7f2bSJakub Kicinski } 1088d9ae7f2bSJakub Kicinski 1089d9ae7f2bSJakub Kicinski static int and_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1090d9ae7f2bSJakub Kicinski { 1091d9ae7f2bSJakub Kicinski return wrp_alu64_imm(nfp_prog, meta, ALU_OP_AND, !~meta->insn.imm); 1092d9ae7f2bSJakub Kicinski } 1093d9ae7f2bSJakub Kicinski 1094d9ae7f2bSJakub Kicinski static int or_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1095d9ae7f2bSJakub Kicinski { 1096d9ae7f2bSJakub Kicinski return wrp_alu64_reg(nfp_prog, meta, ALU_OP_OR); 1097d9ae7f2bSJakub Kicinski } 1098d9ae7f2bSJakub Kicinski 1099d9ae7f2bSJakub Kicinski static int or_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1100d9ae7f2bSJakub Kicinski { 1101d9ae7f2bSJakub Kicinski return wrp_alu64_imm(nfp_prog, meta, ALU_OP_OR, !meta->insn.imm); 1102d9ae7f2bSJakub Kicinski } 1103d9ae7f2bSJakub Kicinski 1104d9ae7f2bSJakub Kicinski static int add_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1105d9ae7f2bSJakub Kicinski { 1106d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1107d9ae7f2bSJakub Kicinski 1108d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2), 1109d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_ADD, 1110d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2)); 1111d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 1112d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_ADD_C, 1113d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2 + 1)); 1114d9ae7f2bSJakub Kicinski 1115d9ae7f2bSJakub Kicinski return 0; 1116d9ae7f2bSJakub Kicinski } 1117d9ae7f2bSJakub Kicinski 1118d9ae7f2bSJakub Kicinski static int add_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1119d9ae7f2bSJakub Kicinski { 1120d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1121d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1122d9ae7f2bSJakub Kicinski 1123d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, ALU_OP_ADD, imm & ~0U); 1124d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2 + 1, ALU_OP_ADD_C, imm >> 32); 1125d9ae7f2bSJakub Kicinski 1126d9ae7f2bSJakub Kicinski return 0; 1127d9ae7f2bSJakub Kicinski } 1128d9ae7f2bSJakub Kicinski 1129d9ae7f2bSJakub Kicinski static int sub_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1130d9ae7f2bSJakub Kicinski { 1131d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1132d9ae7f2bSJakub Kicinski 1133d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2), 1134d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_SUB, 1135d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2)); 1136d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 1137d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_SUB_C, 1138d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2 + 1)); 1139d9ae7f2bSJakub Kicinski 1140d9ae7f2bSJakub Kicinski return 0; 1141d9ae7f2bSJakub Kicinski } 1142d9ae7f2bSJakub Kicinski 1143d9ae7f2bSJakub Kicinski static int sub_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1144d9ae7f2bSJakub Kicinski { 1145d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1146d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1147d9ae7f2bSJakub Kicinski 1148d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, ALU_OP_SUB, imm & ~0U); 1149d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2 + 1, ALU_OP_SUB_C, imm >> 32); 1150d9ae7f2bSJakub Kicinski 1151d9ae7f2bSJakub Kicinski return 0; 1152d9ae7f2bSJakub Kicinski } 1153d9ae7f2bSJakub Kicinski 1154254ef4d7SJiong Wang static int neg_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1155254ef4d7SJiong Wang { 1156254ef4d7SJiong Wang const struct bpf_insn *insn = &meta->insn; 1157254ef4d7SJiong Wang 1158254ef4d7SJiong Wang emit_alu(nfp_prog, reg_both(insn->dst_reg * 2), reg_imm(0), 1159254ef4d7SJiong Wang ALU_OP_SUB, reg_b(insn->dst_reg * 2)); 1160254ef4d7SJiong Wang emit_alu(nfp_prog, reg_both(insn->dst_reg * 2 + 1), reg_imm(0), 1161254ef4d7SJiong Wang ALU_OP_SUB_C, reg_b(insn->dst_reg * 2 + 1)); 1162254ef4d7SJiong Wang 1163254ef4d7SJiong Wang return 0; 1164254ef4d7SJiong Wang } 1165254ef4d7SJiong Wang 1166d9ae7f2bSJakub Kicinski static int shl_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1167d9ae7f2bSJakub Kicinski { 1168d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 11693cae1319SJakub Kicinski u8 dst = insn->dst_reg * 2; 1170d9ae7f2bSJakub Kicinski 11713cae1319SJakub Kicinski if (insn->imm < 32) { 11723cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst + 1), 11733cae1319SJakub Kicinski reg_a(dst + 1), SHF_OP_NONE, reg_b(dst), 11743cae1319SJakub Kicinski SHF_SC_R_DSHF, 32 - insn->imm); 11753cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst), 11763cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst), 11773cae1319SJakub Kicinski SHF_SC_L_SHF, insn->imm); 11783cae1319SJakub Kicinski } else if (insn->imm == 32) { 11793cae1319SJakub Kicinski wrp_reg_mov(nfp_prog, dst + 1, dst); 11803cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), 0); 11813cae1319SJakub Kicinski } else if (insn->imm > 32) { 11823cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst + 1), 11833cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst), 11843cae1319SJakub Kicinski SHF_SC_L_SHF, insn->imm - 32); 11853cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), 0); 11863cae1319SJakub Kicinski } 1187d9ae7f2bSJakub Kicinski 1188d9ae7f2bSJakub Kicinski return 0; 1189d9ae7f2bSJakub Kicinski } 1190d9ae7f2bSJakub Kicinski 1191d9ae7f2bSJakub Kicinski static int shr_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1192d9ae7f2bSJakub Kicinski { 1193d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 11943cae1319SJakub Kicinski u8 dst = insn->dst_reg * 2; 1195d9ae7f2bSJakub Kicinski 11963cae1319SJakub Kicinski if (insn->imm < 32) { 11973cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst), 11983cae1319SJakub Kicinski reg_a(dst + 1), SHF_OP_NONE, reg_b(dst), 11993cae1319SJakub Kicinski SHF_SC_R_DSHF, insn->imm); 12003cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst + 1), 12013cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst + 1), 12023cae1319SJakub Kicinski SHF_SC_R_SHF, insn->imm); 12033cae1319SJakub Kicinski } else if (insn->imm == 32) { 12043cae1319SJakub Kicinski wrp_reg_mov(nfp_prog, dst, dst + 1); 12053cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst + 1), 0); 12063cae1319SJakub Kicinski } else if (insn->imm > 32) { 12073cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst), 12083cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst + 1), 12093cae1319SJakub Kicinski SHF_SC_R_SHF, insn->imm - 32); 12103cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst + 1), 0); 12113cae1319SJakub Kicinski } 1212d9ae7f2bSJakub Kicinski 1213d9ae7f2bSJakub Kicinski return 0; 1214d9ae7f2bSJakub Kicinski } 1215d9ae7f2bSJakub Kicinski 1216d9ae7f2bSJakub Kicinski static int mov_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1217d9ae7f2bSJakub Kicinski { 1218d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1219d9ae7f2bSJakub Kicinski 1220d9ae7f2bSJakub Kicinski wrp_reg_mov(nfp_prog, insn->dst_reg * 2, insn->src_reg * 2); 1221d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 1222d9ae7f2bSJakub Kicinski 1223d9ae7f2bSJakub Kicinski return 0; 1224d9ae7f2bSJakub Kicinski } 1225d9ae7f2bSJakub Kicinski 1226d9ae7f2bSJakub Kicinski static int mov_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1227d9ae7f2bSJakub Kicinski { 1228d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1229d9ae7f2bSJakub Kicinski 1230d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2), insn->imm); 1231d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 1232d9ae7f2bSJakub Kicinski 1233d9ae7f2bSJakub Kicinski return 0; 1234d9ae7f2bSJakub Kicinski } 1235d9ae7f2bSJakub Kicinski 1236d9ae7f2bSJakub Kicinski static int xor_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1237d9ae7f2bSJakub Kicinski { 1238d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_XOR); 1239d9ae7f2bSJakub Kicinski } 1240d9ae7f2bSJakub Kicinski 1241d9ae7f2bSJakub Kicinski static int xor_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1242d9ae7f2bSJakub Kicinski { 1243d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_XOR, !~meta->insn.imm); 1244d9ae7f2bSJakub Kicinski } 1245d9ae7f2bSJakub Kicinski 1246d9ae7f2bSJakub Kicinski static int and_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1247d9ae7f2bSJakub Kicinski { 1248d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_AND); 1249d9ae7f2bSJakub Kicinski } 1250d9ae7f2bSJakub Kicinski 1251d9ae7f2bSJakub Kicinski static int and_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1252d9ae7f2bSJakub Kicinski { 1253d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_AND, !~meta->insn.imm); 1254d9ae7f2bSJakub Kicinski } 1255d9ae7f2bSJakub Kicinski 1256d9ae7f2bSJakub Kicinski static int or_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1257d9ae7f2bSJakub Kicinski { 1258d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_OR); 1259d9ae7f2bSJakub Kicinski } 1260d9ae7f2bSJakub Kicinski 1261d9ae7f2bSJakub Kicinski static int or_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1262d9ae7f2bSJakub Kicinski { 1263d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_OR, !meta->insn.imm); 1264d9ae7f2bSJakub Kicinski } 1265d9ae7f2bSJakub Kicinski 1266d9ae7f2bSJakub Kicinski static int add_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1267d9ae7f2bSJakub Kicinski { 1268d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_ADD); 1269d9ae7f2bSJakub Kicinski } 1270d9ae7f2bSJakub Kicinski 1271d9ae7f2bSJakub Kicinski static int add_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1272d9ae7f2bSJakub Kicinski { 1273d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_ADD, !meta->insn.imm); 1274d9ae7f2bSJakub Kicinski } 1275d9ae7f2bSJakub Kicinski 1276d9ae7f2bSJakub Kicinski static int sub_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1277d9ae7f2bSJakub Kicinski { 1278d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_SUB); 1279d9ae7f2bSJakub Kicinski } 1280d9ae7f2bSJakub Kicinski 1281d9ae7f2bSJakub Kicinski static int sub_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1282d9ae7f2bSJakub Kicinski { 1283d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_SUB, !meta->insn.imm); 1284d9ae7f2bSJakub Kicinski } 1285d9ae7f2bSJakub Kicinski 1286254ef4d7SJiong Wang static int neg_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1287254ef4d7SJiong Wang { 1288254ef4d7SJiong Wang u8 dst = meta->insn.dst_reg * 2; 1289254ef4d7SJiong Wang 1290254ef4d7SJiong Wang emit_alu(nfp_prog, reg_both(dst), reg_imm(0), ALU_OP_SUB, reg_b(dst)); 1291254ef4d7SJiong Wang wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 1292254ef4d7SJiong Wang 1293254ef4d7SJiong Wang return 0; 1294254ef4d7SJiong Wang } 1295254ef4d7SJiong Wang 1296d9ae7f2bSJakub Kicinski static int shl_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1297d9ae7f2bSJakub Kicinski { 1298d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1299d9ae7f2bSJakub Kicinski 1300d9ae7f2bSJakub Kicinski if (!insn->imm) 1301d9ae7f2bSJakub Kicinski return 1; /* TODO: zero shift means indirect */ 1302d9ae7f2bSJakub Kicinski 1303d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_both(insn->dst_reg * 2), 1304d9ae7f2bSJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(insn->dst_reg * 2), 1305d9ae7f2bSJakub Kicinski SHF_SC_L_SHF, insn->imm); 1306d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 1307d9ae7f2bSJakub Kicinski 1308d9ae7f2bSJakub Kicinski return 0; 1309d9ae7f2bSJakub Kicinski } 1310d9ae7f2bSJakub Kicinski 13113119d1fdSJakub Kicinski static int end_reg32(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 13123119d1fdSJakub Kicinski { 13133119d1fdSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 13143119d1fdSJakub Kicinski u8 gpr = insn->dst_reg * 2; 13153119d1fdSJakub Kicinski 13163119d1fdSJakub Kicinski switch (insn->imm) { 13173119d1fdSJakub Kicinski case 16: 13183119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr), 0x9, reg_b(gpr), 13193119d1fdSJakub Kicinski SHF_SC_R_ROT, 8); 13203119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr), 0xe, reg_a(gpr), 13213119d1fdSJakub Kicinski SHF_SC_R_SHF, 16); 13223119d1fdSJakub Kicinski 13233119d1fdSJakub Kicinski wrp_immed(nfp_prog, reg_both(gpr + 1), 0); 13243119d1fdSJakub Kicinski break; 13253119d1fdSJakub Kicinski case 32: 13263119d1fdSJakub Kicinski wrp_end32(nfp_prog, reg_a(gpr), gpr); 13273119d1fdSJakub Kicinski wrp_immed(nfp_prog, reg_both(gpr + 1), 0); 13283119d1fdSJakub Kicinski break; 13293119d1fdSJakub Kicinski case 64: 13303119d1fdSJakub Kicinski wrp_mov(nfp_prog, imm_a(nfp_prog), reg_b(gpr + 1)); 13313119d1fdSJakub Kicinski 13323119d1fdSJakub Kicinski wrp_end32(nfp_prog, reg_a(gpr), gpr + 1); 13333119d1fdSJakub Kicinski wrp_end32(nfp_prog, imm_a(nfp_prog), gpr); 13343119d1fdSJakub Kicinski break; 13353119d1fdSJakub Kicinski } 13363119d1fdSJakub Kicinski 13373119d1fdSJakub Kicinski return 0; 13383119d1fdSJakub Kicinski } 13393119d1fdSJakub Kicinski 1340d9ae7f2bSJakub Kicinski static int imm_ld8_part2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1341d9ae7f2bSJakub Kicinski { 13429f16c8abSJakub Kicinski struct nfp_insn_meta *prev = nfp_meta_prev(meta); 13439f16c8abSJakub Kicinski u32 imm_lo, imm_hi; 13449f16c8abSJakub Kicinski u8 dst; 13459f16c8abSJakub Kicinski 13469f16c8abSJakub Kicinski dst = prev->insn.dst_reg * 2; 13479f16c8abSJakub Kicinski imm_lo = prev->insn.imm; 13489f16c8abSJakub Kicinski imm_hi = meta->insn.imm; 13499f16c8abSJakub Kicinski 13509f16c8abSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), imm_lo); 13519f16c8abSJakub Kicinski 13529f16c8abSJakub Kicinski /* mov is always 1 insn, load imm may be two, so try to use mov */ 13539f16c8abSJakub Kicinski if (imm_hi == imm_lo) 13549f16c8abSJakub Kicinski wrp_mov(nfp_prog, reg_both(dst + 1), reg_a(dst)); 13559f16c8abSJakub Kicinski else 13569f16c8abSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst + 1), imm_hi); 1357d9ae7f2bSJakub Kicinski 1358d9ae7f2bSJakub Kicinski return 0; 1359d9ae7f2bSJakub Kicinski } 1360d9ae7f2bSJakub Kicinski 1361d9ae7f2bSJakub Kicinski static int imm_ld8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1362d9ae7f2bSJakub Kicinski { 1363d9ae7f2bSJakub Kicinski meta->double_cb = imm_ld8_part2; 1364d9ae7f2bSJakub Kicinski return 0; 1365d9ae7f2bSJakub Kicinski } 1366d9ae7f2bSJakub Kicinski 1367d9ae7f2bSJakub Kicinski static int data_ld1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1368d9ae7f2bSJakub Kicinski { 1369d9ae7f2bSJakub Kicinski return construct_data_ld(nfp_prog, meta->insn.imm, 1); 1370d9ae7f2bSJakub Kicinski } 1371d9ae7f2bSJakub Kicinski 1372d9ae7f2bSJakub Kicinski static int data_ld2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1373d9ae7f2bSJakub Kicinski { 1374d9ae7f2bSJakub Kicinski return construct_data_ld(nfp_prog, meta->insn.imm, 2); 1375d9ae7f2bSJakub Kicinski } 1376d9ae7f2bSJakub Kicinski 1377d9ae7f2bSJakub Kicinski static int data_ld4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1378d9ae7f2bSJakub Kicinski { 1379d9ae7f2bSJakub Kicinski return construct_data_ld(nfp_prog, meta->insn.imm, 4); 1380d9ae7f2bSJakub Kicinski } 1381d9ae7f2bSJakub Kicinski 1382d9ae7f2bSJakub Kicinski static int data_ind_ld1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1383d9ae7f2bSJakub Kicinski { 1384d9ae7f2bSJakub Kicinski return construct_data_ind_ld(nfp_prog, meta->insn.imm, 13850a793977SJakub Kicinski meta->insn.src_reg * 2, 1); 1386d9ae7f2bSJakub Kicinski } 1387d9ae7f2bSJakub Kicinski 1388d9ae7f2bSJakub Kicinski static int data_ind_ld2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1389d9ae7f2bSJakub Kicinski { 1390d9ae7f2bSJakub Kicinski return construct_data_ind_ld(nfp_prog, meta->insn.imm, 13910a793977SJakub Kicinski meta->insn.src_reg * 2, 2); 1392d9ae7f2bSJakub Kicinski } 1393d9ae7f2bSJakub Kicinski 1394d9ae7f2bSJakub Kicinski static int data_ind_ld4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1395d9ae7f2bSJakub Kicinski { 1396d9ae7f2bSJakub Kicinski return construct_data_ind_ld(nfp_prog, meta->insn.imm, 13970a793977SJakub Kicinski meta->insn.src_reg * 2, 4); 1398d9ae7f2bSJakub Kicinski } 1399d9ae7f2bSJakub Kicinski 1400a82b23fbSJakub Kicinski static int 1401a82b23fbSJakub Kicinski mem_ldx_stack(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1402d3488480SJakub Kicinski unsigned int size, unsigned int ptr_off) 1403a82b23fbSJakub Kicinski { 1404d3488480SJakub Kicinski return mem_op_stack(nfp_prog, meta, size, ptr_off, 1405b14157eeSJakub Kicinski meta->insn.dst_reg * 2, meta->insn.src_reg * 2, 1406b14157eeSJakub Kicinski true, wrp_lmem_load); 1407a82b23fbSJakub Kicinski } 1408a82b23fbSJakub Kicinski 1409943c57b9SJakub Kicinski static int mem_ldx_skb(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1410943c57b9SJakub Kicinski u8 size) 1411d9ae7f2bSJakub Kicinski { 1412bfddbc8aSJakub Kicinski swreg dst = reg_both(meta->insn.dst_reg * 2); 1413bfddbc8aSJakub Kicinski 1414943c57b9SJakub Kicinski switch (meta->insn.off) { 1415c6c580d7SJakub Kicinski case offsetof(struct __sk_buff, len): 1416c6c580d7SJakub Kicinski if (size != FIELD_SIZEOF(struct __sk_buff, len)) 1417943c57b9SJakub Kicinski return -EOPNOTSUPP; 1418bfddbc8aSJakub Kicinski wrp_mov(nfp_prog, dst, plen_reg(nfp_prog)); 1419bfddbc8aSJakub Kicinski break; 1420c6c580d7SJakub Kicinski case offsetof(struct __sk_buff, data): 1421c6c580d7SJakub Kicinski if (size != FIELD_SIZEOF(struct __sk_buff, data)) 1422bfddbc8aSJakub Kicinski return -EOPNOTSUPP; 1423bfddbc8aSJakub Kicinski wrp_mov(nfp_prog, dst, pptr_reg(nfp_prog)); 1424bfddbc8aSJakub Kicinski break; 1425c6c580d7SJakub Kicinski case offsetof(struct __sk_buff, data_end): 1426c6c580d7SJakub Kicinski if (size != FIELD_SIZEOF(struct __sk_buff, data_end)) 1427bfddbc8aSJakub Kicinski return -EOPNOTSUPP; 1428bfddbc8aSJakub Kicinski emit_alu(nfp_prog, dst, 1429bfddbc8aSJakub Kicinski plen_reg(nfp_prog), ALU_OP_ADD, pptr_reg(nfp_prog)); 1430943c57b9SJakub Kicinski break; 1431943c57b9SJakub Kicinski default: 1432d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1433943c57b9SJakub Kicinski } 1434943c57b9SJakub Kicinski 1435943c57b9SJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 1436d9ae7f2bSJakub Kicinski 1437d9ae7f2bSJakub Kicinski return 0; 1438d9ae7f2bSJakub Kicinski } 1439d9ae7f2bSJakub Kicinski 1440943c57b9SJakub Kicinski static int mem_ldx_xdp(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1441943c57b9SJakub Kicinski u8 size) 1442d9ae7f2bSJakub Kicinski { 1443b3f868dfSJakub Kicinski swreg dst = reg_both(meta->insn.dst_reg * 2); 1444d9ae7f2bSJakub Kicinski 1445943c57b9SJakub Kicinski switch (meta->insn.off) { 1446c6c580d7SJakub Kicinski case offsetof(struct xdp_md, data): 1447c6c580d7SJakub Kicinski if (size != FIELD_SIZEOF(struct xdp_md, data)) 1448c6c580d7SJakub Kicinski return -EOPNOTSUPP; 1449c000dfb5SJakub Kicinski wrp_mov(nfp_prog, dst, pptr_reg(nfp_prog)); 1450943c57b9SJakub Kicinski break; 1451c6c580d7SJakub Kicinski case offsetof(struct xdp_md, data_end): 1452c6c580d7SJakub Kicinski if (size != FIELD_SIZEOF(struct xdp_md, data_end)) 1453c6c580d7SJakub Kicinski return -EOPNOTSUPP; 1454943c57b9SJakub Kicinski emit_alu(nfp_prog, dst, 1455943c57b9SJakub Kicinski plen_reg(nfp_prog), ALU_OP_ADD, pptr_reg(nfp_prog)); 1456943c57b9SJakub Kicinski break; 1457943c57b9SJakub Kicinski default: 1458943c57b9SJakub Kicinski return -EOPNOTSUPP; 1459943c57b9SJakub Kicinski } 1460d9ae7f2bSJakub Kicinski 1461943c57b9SJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 1462d9ae7f2bSJakub Kicinski 1463d9ae7f2bSJakub Kicinski return 0; 1464d9ae7f2bSJakub Kicinski } 1465d9ae7f2bSJakub Kicinski 14662ca71441SJakub Kicinski static int 14672ca71441SJakub Kicinski mem_ldx_data(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 14682ca71441SJakub Kicinski unsigned int size) 14692ca71441SJakub Kicinski { 14702ca71441SJakub Kicinski swreg tmp_reg; 14712ca71441SJakub Kicinski 14722ca71441SJakub Kicinski tmp_reg = re_load_imm_any(nfp_prog, meta->insn.off, imm_b(nfp_prog)); 14732ca71441SJakub Kicinski 14742ca71441SJakub Kicinski return data_ld_host_order(nfp_prog, meta->insn.src_reg * 2, tmp_reg, 14752ca71441SJakub Kicinski meta->insn.dst_reg * 2, size); 14762ca71441SJakub Kicinski } 14772ca71441SJakub Kicinski 14782ca71441SJakub Kicinski static int 14792ca71441SJakub Kicinski mem_ldx(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 14802ca71441SJakub Kicinski unsigned int size) 14812ca71441SJakub Kicinski { 14822ca71441SJakub Kicinski if (meta->ptr.type == PTR_TO_CTX) { 1483012bb8a8SJakub Kicinski if (nfp_prog->type == BPF_PROG_TYPE_XDP) 14842ca71441SJakub Kicinski return mem_ldx_xdp(nfp_prog, meta, size); 14852ca71441SJakub Kicinski else 14862ca71441SJakub Kicinski return mem_ldx_skb(nfp_prog, meta, size); 14872ca71441SJakub Kicinski } 14882ca71441SJakub Kicinski 14892ca71441SJakub Kicinski if (meta->ptr.type == PTR_TO_PACKET) 14902ca71441SJakub Kicinski return mem_ldx_data(nfp_prog, meta, size); 14912ca71441SJakub Kicinski 1492a82b23fbSJakub Kicinski if (meta->ptr.type == PTR_TO_STACK) 1493d3488480SJakub Kicinski return mem_ldx_stack(nfp_prog, meta, size, 1494d3488480SJakub Kicinski meta->ptr.off + meta->ptr.var_off.value); 1495a82b23fbSJakub Kicinski 14962ca71441SJakub Kicinski return -EOPNOTSUPP; 14972ca71441SJakub Kicinski } 14982ca71441SJakub Kicinski 14992ca71441SJakub Kicinski static int mem_ldx1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 15002ca71441SJakub Kicinski { 15012ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 1); 15022ca71441SJakub Kicinski } 15032ca71441SJakub Kicinski 15042ca71441SJakub Kicinski static int mem_ldx2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 15052ca71441SJakub Kicinski { 15062ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 2); 15072ca71441SJakub Kicinski } 15082ca71441SJakub Kicinski 1509d9ae7f2bSJakub Kicinski static int mem_ldx4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1510d9ae7f2bSJakub Kicinski { 15112ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 4); 15122ca71441SJakub Kicinski } 15132ca71441SJakub Kicinski 15142ca71441SJakub Kicinski static int mem_ldx8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 15152ca71441SJakub Kicinski { 15162ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 8); 1517d9ae7f2bSJakub Kicinski } 1518d9ae7f2bSJakub Kicinski 1519e663fe38SJakub Kicinski static int 1520e663fe38SJakub Kicinski mem_st_data(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1521e663fe38SJakub Kicinski unsigned int size) 1522d9ae7f2bSJakub Kicinski { 1523e663fe38SJakub Kicinski u64 imm = meta->insn.imm; /* sign extend */ 1524e663fe38SJakub Kicinski swreg off_reg; 1525e663fe38SJakub Kicinski 1526e663fe38SJakub Kicinski off_reg = re_load_imm_any(nfp_prog, meta->insn.off, imm_b(nfp_prog)); 1527e663fe38SJakub Kicinski 1528e663fe38SJakub Kicinski return data_st_host_order(nfp_prog, meta->insn.dst_reg * 2, off_reg, 1529e663fe38SJakub Kicinski imm, size); 1530e663fe38SJakub Kicinski } 1531e663fe38SJakub Kicinski 1532e663fe38SJakub Kicinski static int mem_st(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1533e663fe38SJakub Kicinski unsigned int size) 1534e663fe38SJakub Kicinski { 1535e663fe38SJakub Kicinski if (meta->ptr.type == PTR_TO_PACKET) 1536e663fe38SJakub Kicinski return mem_st_data(nfp_prog, meta, size); 1537e663fe38SJakub Kicinski 1538d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1539d9ae7f2bSJakub Kicinski } 1540d9ae7f2bSJakub Kicinski 1541e663fe38SJakub Kicinski static int mem_st1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1542d9ae7f2bSJakub Kicinski { 1543e663fe38SJakub Kicinski return mem_st(nfp_prog, meta, 1); 1544e663fe38SJakub Kicinski } 1545e663fe38SJakub Kicinski 1546e663fe38SJakub Kicinski static int mem_st2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1547e663fe38SJakub Kicinski { 1548e663fe38SJakub Kicinski return mem_st(nfp_prog, meta, 2); 1549e663fe38SJakub Kicinski } 1550e663fe38SJakub Kicinski 1551e663fe38SJakub Kicinski static int mem_st4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1552e663fe38SJakub Kicinski { 1553e663fe38SJakub Kicinski return mem_st(nfp_prog, meta, 4); 1554e663fe38SJakub Kicinski } 1555e663fe38SJakub Kicinski 1556e663fe38SJakub Kicinski static int mem_st8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1557e663fe38SJakub Kicinski { 1558e663fe38SJakub Kicinski return mem_st(nfp_prog, meta, 8); 1559e663fe38SJakub Kicinski } 1560e663fe38SJakub Kicinski 1561e663fe38SJakub Kicinski static int 1562e663fe38SJakub Kicinski mem_stx_data(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1563e663fe38SJakub Kicinski unsigned int size) 1564e663fe38SJakub Kicinski { 1565e663fe38SJakub Kicinski swreg off_reg; 1566e663fe38SJakub Kicinski 1567e663fe38SJakub Kicinski off_reg = re_load_imm_any(nfp_prog, meta->insn.off, imm_b(nfp_prog)); 1568e663fe38SJakub Kicinski 1569e663fe38SJakub Kicinski return data_stx_host_order(nfp_prog, meta->insn.dst_reg * 2, off_reg, 1570e663fe38SJakub Kicinski meta->insn.src_reg * 2, size); 1571e663fe38SJakub Kicinski } 1572e663fe38SJakub Kicinski 1573e663fe38SJakub Kicinski static int 1574ee9133a8SJakub Kicinski mem_stx_stack(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1575d3488480SJakub Kicinski unsigned int size, unsigned int ptr_off) 1576ee9133a8SJakub Kicinski { 1577d3488480SJakub Kicinski return mem_op_stack(nfp_prog, meta, size, ptr_off, 1578b14157eeSJakub Kicinski meta->insn.src_reg * 2, meta->insn.dst_reg * 2, 1579b14157eeSJakub Kicinski false, wrp_lmem_store); 1580ee9133a8SJakub Kicinski } 1581ee9133a8SJakub Kicinski 1582ee9133a8SJakub Kicinski static int 1583e663fe38SJakub Kicinski mem_stx(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1584e663fe38SJakub Kicinski unsigned int size) 1585e663fe38SJakub Kicinski { 1586e663fe38SJakub Kicinski if (meta->ptr.type == PTR_TO_PACKET) 1587e663fe38SJakub Kicinski return mem_stx_data(nfp_prog, meta, size); 1588e663fe38SJakub Kicinski 1589ee9133a8SJakub Kicinski if (meta->ptr.type == PTR_TO_STACK) 1590d3488480SJakub Kicinski return mem_stx_stack(nfp_prog, meta, size, 1591d3488480SJakub Kicinski meta->ptr.off + meta->ptr.var_off.value); 1592ee9133a8SJakub Kicinski 1593d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1594d9ae7f2bSJakub Kicinski } 1595d9ae7f2bSJakub Kicinski 1596e663fe38SJakub Kicinski static int mem_stx1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1597e663fe38SJakub Kicinski { 1598e663fe38SJakub Kicinski return mem_stx(nfp_prog, meta, 1); 1599e663fe38SJakub Kicinski } 1600e663fe38SJakub Kicinski 1601e663fe38SJakub Kicinski static int mem_stx2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1602e663fe38SJakub Kicinski { 1603e663fe38SJakub Kicinski return mem_stx(nfp_prog, meta, 2); 1604e663fe38SJakub Kicinski } 1605e663fe38SJakub Kicinski 1606d9ae7f2bSJakub Kicinski static int mem_stx4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1607d9ae7f2bSJakub Kicinski { 1608e663fe38SJakub Kicinski return mem_stx(nfp_prog, meta, 4); 1609e663fe38SJakub Kicinski } 16102ca71441SJakub Kicinski 1611e663fe38SJakub Kicinski static int mem_stx8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1612e663fe38SJakub Kicinski { 1613e663fe38SJakub Kicinski return mem_stx(nfp_prog, meta, 8); 1614d9ae7f2bSJakub Kicinski } 1615d9ae7f2bSJakub Kicinski 1616d9ae7f2bSJakub Kicinski static int jump(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1617d9ae7f2bSJakub Kicinski { 1618d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_UNC, meta->insn.off, 0); 1619d9ae7f2bSJakub Kicinski 1620d9ae7f2bSJakub Kicinski return 0; 1621d9ae7f2bSJakub Kicinski } 1622d9ae7f2bSJakub Kicinski 1623d9ae7f2bSJakub Kicinski static int jeq_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1624d9ae7f2bSJakub Kicinski { 1625d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1626d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1627b3f868dfSJakub Kicinski swreg or1, or2, tmp_reg; 1628b3f868dfSJakub Kicinski 1629b3f868dfSJakub Kicinski or1 = reg_a(insn->dst_reg * 2); 1630b3f868dfSJakub Kicinski or2 = reg_b(insn->dst_reg * 2 + 1); 1631d9ae7f2bSJakub Kicinski 1632d9ae7f2bSJakub Kicinski if (imm & ~0U) { 1633d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 1634d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_a(nfp_prog), 1635d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_XOR, tmp_reg); 1636d9ae7f2bSJakub Kicinski or1 = imm_a(nfp_prog); 1637d9ae7f2bSJakub Kicinski } 1638d9ae7f2bSJakub Kicinski 1639d9ae7f2bSJakub Kicinski if (imm >> 32) { 1640d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 1641d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), 1642d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_XOR, tmp_reg); 1643d9ae7f2bSJakub Kicinski or2 = imm_b(nfp_prog); 1644d9ae7f2bSJakub Kicinski } 1645d9ae7f2bSJakub Kicinski 1646d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), or1, ALU_OP_OR, or2); 1647d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BEQ, insn->off, 0); 1648d9ae7f2bSJakub Kicinski 1649d9ae7f2bSJakub Kicinski return 0; 1650d9ae7f2bSJakub Kicinski } 1651d9ae7f2bSJakub Kicinski 1652d9ae7f2bSJakub Kicinski static int jgt_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1653d9ae7f2bSJakub Kicinski { 165426fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BLO, true); 1655d9ae7f2bSJakub Kicinski } 1656d9ae7f2bSJakub Kicinski 1657d9ae7f2bSJakub Kicinski static int jge_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1658d9ae7f2bSJakub Kicinski { 165926fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BHS, false); 1660d9ae7f2bSJakub Kicinski } 1661d9ae7f2bSJakub Kicinski 16625dd294d4SDaniel Borkmann static int jlt_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 16635dd294d4SDaniel Borkmann { 166426fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BLO, false); 16655dd294d4SDaniel Borkmann } 16665dd294d4SDaniel Borkmann 16675dd294d4SDaniel Borkmann static int jle_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 16685dd294d4SDaniel Borkmann { 166926fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BHS, true); 16705dd294d4SDaniel Borkmann } 16715dd294d4SDaniel Borkmann 1672d9ae7f2bSJakub Kicinski static int jset_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1673d9ae7f2bSJakub Kicinski { 1674d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1675d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1676b3f868dfSJakub Kicinski swreg tmp_reg; 1677d9ae7f2bSJakub Kicinski 1678d9ae7f2bSJakub Kicinski if (!imm) { 1679d9ae7f2bSJakub Kicinski meta->skip = true; 1680d9ae7f2bSJakub Kicinski return 0; 1681d9ae7f2bSJakub Kicinski } 1682d9ae7f2bSJakub Kicinski 1683d9ae7f2bSJakub Kicinski if (imm & ~0U) { 1684d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 1685d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1686d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_AND, tmp_reg); 1687d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1688d9ae7f2bSJakub Kicinski } 1689d9ae7f2bSJakub Kicinski 1690d9ae7f2bSJakub Kicinski if (imm >> 32) { 1691d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 1692d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1693d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_AND, tmp_reg); 1694d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1695d9ae7f2bSJakub Kicinski } 1696d9ae7f2bSJakub Kicinski 1697d9ae7f2bSJakub Kicinski return 0; 1698d9ae7f2bSJakub Kicinski } 1699d9ae7f2bSJakub Kicinski 1700d9ae7f2bSJakub Kicinski static int jne_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1701d9ae7f2bSJakub Kicinski { 1702d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1703d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1704b3f868dfSJakub Kicinski swreg tmp_reg; 1705d9ae7f2bSJakub Kicinski 1706d9ae7f2bSJakub Kicinski if (!imm) { 1707d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(insn->dst_reg * 2), 1708d9ae7f2bSJakub Kicinski ALU_OP_OR, reg_b(insn->dst_reg * 2 + 1)); 1709d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 171082837370SJakub Kicinski return 0; 1711d9ae7f2bSJakub Kicinski } 1712d9ae7f2bSJakub Kicinski 1713d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 1714d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1715d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_XOR, tmp_reg); 1716d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1717d9ae7f2bSJakub Kicinski 1718d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 1719d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1720d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_XOR, tmp_reg); 1721d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1722d9ae7f2bSJakub Kicinski 1723d9ae7f2bSJakub Kicinski return 0; 1724d9ae7f2bSJakub Kicinski } 1725d9ae7f2bSJakub Kicinski 1726d9ae7f2bSJakub Kicinski static int jeq_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1727d9ae7f2bSJakub Kicinski { 1728d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1729d9ae7f2bSJakub Kicinski 1730d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_a(nfp_prog), reg_a(insn->dst_reg * 2), 1731d9ae7f2bSJakub Kicinski ALU_OP_XOR, reg_b(insn->src_reg * 2)); 1732d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), reg_a(insn->dst_reg * 2 + 1), 1733d9ae7f2bSJakub Kicinski ALU_OP_XOR, reg_b(insn->src_reg * 2 + 1)); 1734d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1735d9ae7f2bSJakub Kicinski imm_a(nfp_prog), ALU_OP_OR, imm_b(nfp_prog)); 1736d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BEQ, insn->off, 0); 1737d9ae7f2bSJakub Kicinski 1738d9ae7f2bSJakub Kicinski return 0; 1739d9ae7f2bSJakub Kicinski } 1740d9ae7f2bSJakub Kicinski 1741d9ae7f2bSJakub Kicinski static int jgt_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1742d9ae7f2bSJakub Kicinski { 174326fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BLO, true); 1744d9ae7f2bSJakub Kicinski } 1745d9ae7f2bSJakub Kicinski 1746d9ae7f2bSJakub Kicinski static int jge_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1747d9ae7f2bSJakub Kicinski { 174826fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BHS, false); 1749d9ae7f2bSJakub Kicinski } 1750d9ae7f2bSJakub Kicinski 17515dd294d4SDaniel Borkmann static int jlt_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 17525dd294d4SDaniel Borkmann { 175326fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BLO, false); 17545dd294d4SDaniel Borkmann } 17555dd294d4SDaniel Borkmann 17565dd294d4SDaniel Borkmann static int jle_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 17575dd294d4SDaniel Borkmann { 175826fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BHS, true); 17595dd294d4SDaniel Borkmann } 17605dd294d4SDaniel Borkmann 1761d9ae7f2bSJakub Kicinski static int jset_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1762d9ae7f2bSJakub Kicinski { 1763d9ae7f2bSJakub Kicinski return wrp_test_reg(nfp_prog, meta, ALU_OP_AND, BR_BNE); 1764d9ae7f2bSJakub Kicinski } 1765d9ae7f2bSJakub Kicinski 1766d9ae7f2bSJakub Kicinski static int jne_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1767d9ae7f2bSJakub Kicinski { 1768d9ae7f2bSJakub Kicinski return wrp_test_reg(nfp_prog, meta, ALU_OP_XOR, BR_BNE); 1769d9ae7f2bSJakub Kicinski } 1770d9ae7f2bSJakub Kicinski 1771d9ae7f2bSJakub Kicinski static int goto_out(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1772d9ae7f2bSJakub Kicinski { 1773d9ae7f2bSJakub Kicinski wrp_br_special(nfp_prog, BR_UNC, OP_BR_GO_OUT); 1774d9ae7f2bSJakub Kicinski 1775d9ae7f2bSJakub Kicinski return 0; 1776d9ae7f2bSJakub Kicinski } 1777d9ae7f2bSJakub Kicinski 1778d9ae7f2bSJakub Kicinski static const instr_cb_t instr_cb[256] = { 1779d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_MOV | BPF_X] = mov_reg64, 1780d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_MOV | BPF_K] = mov_imm64, 1781d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_XOR | BPF_X] = xor_reg64, 1782d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_XOR | BPF_K] = xor_imm64, 1783d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_AND | BPF_X] = and_reg64, 1784d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_AND | BPF_K] = and_imm64, 1785d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_OR | BPF_X] = or_reg64, 1786d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_OR | BPF_K] = or_imm64, 1787d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_ADD | BPF_X] = add_reg64, 1788d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_ADD | BPF_K] = add_imm64, 1789d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_SUB | BPF_X] = sub_reg64, 1790d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_SUB | BPF_K] = sub_imm64, 1791254ef4d7SJiong Wang [BPF_ALU64 | BPF_NEG] = neg_reg64, 1792d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_LSH | BPF_K] = shl_imm64, 1793d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_RSH | BPF_K] = shr_imm64, 1794d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_MOV | BPF_X] = mov_reg, 1795d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_MOV | BPF_K] = mov_imm, 1796d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_XOR | BPF_X] = xor_reg, 1797d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_XOR | BPF_K] = xor_imm, 1798d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_AND | BPF_X] = and_reg, 1799d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_AND | BPF_K] = and_imm, 1800d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_OR | BPF_X] = or_reg, 1801d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_OR | BPF_K] = or_imm, 1802d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_ADD | BPF_X] = add_reg, 1803d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_ADD | BPF_K] = add_imm, 1804d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_SUB | BPF_X] = sub_reg, 1805d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_SUB | BPF_K] = sub_imm, 1806254ef4d7SJiong Wang [BPF_ALU | BPF_NEG] = neg_reg, 1807d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_LSH | BPF_K] = shl_imm, 18083119d1fdSJakub Kicinski [BPF_ALU | BPF_END | BPF_X] = end_reg32, 1809d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IMM | BPF_DW] = imm_ld8, 1810d9ae7f2bSJakub Kicinski [BPF_LD | BPF_ABS | BPF_B] = data_ld1, 1811d9ae7f2bSJakub Kicinski [BPF_LD | BPF_ABS | BPF_H] = data_ld2, 1812d9ae7f2bSJakub Kicinski [BPF_LD | BPF_ABS | BPF_W] = data_ld4, 1813d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IND | BPF_B] = data_ind_ld1, 1814d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IND | BPF_H] = data_ind_ld2, 1815d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IND | BPF_W] = data_ind_ld4, 18162ca71441SJakub Kicinski [BPF_LDX | BPF_MEM | BPF_B] = mem_ldx1, 18172ca71441SJakub Kicinski [BPF_LDX | BPF_MEM | BPF_H] = mem_ldx2, 1818d9ae7f2bSJakub Kicinski [BPF_LDX | BPF_MEM | BPF_W] = mem_ldx4, 18192ca71441SJakub Kicinski [BPF_LDX | BPF_MEM | BPF_DW] = mem_ldx8, 1820e663fe38SJakub Kicinski [BPF_STX | BPF_MEM | BPF_B] = mem_stx1, 1821e663fe38SJakub Kicinski [BPF_STX | BPF_MEM | BPF_H] = mem_stx2, 1822d9ae7f2bSJakub Kicinski [BPF_STX | BPF_MEM | BPF_W] = mem_stx4, 1823e663fe38SJakub Kicinski [BPF_STX | BPF_MEM | BPF_DW] = mem_stx8, 1824e663fe38SJakub Kicinski [BPF_ST | BPF_MEM | BPF_B] = mem_st1, 1825e663fe38SJakub Kicinski [BPF_ST | BPF_MEM | BPF_H] = mem_st2, 1826e663fe38SJakub Kicinski [BPF_ST | BPF_MEM | BPF_W] = mem_st4, 1827e663fe38SJakub Kicinski [BPF_ST | BPF_MEM | BPF_DW] = mem_st8, 1828d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JA | BPF_K] = jump, 1829d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JEQ | BPF_K] = jeq_imm, 1830d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGT | BPF_K] = jgt_imm, 1831d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGE | BPF_K] = jge_imm, 18325dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLT | BPF_K] = jlt_imm, 18335dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLE | BPF_K] = jle_imm, 1834d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JSET | BPF_K] = jset_imm, 1835d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JNE | BPF_K] = jne_imm, 1836d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JEQ | BPF_X] = jeq_reg, 1837d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGT | BPF_X] = jgt_reg, 1838d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGE | BPF_X] = jge_reg, 18395dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLT | BPF_X] = jlt_reg, 18405dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLE | BPF_X] = jle_reg, 1841d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JSET | BPF_X] = jset_reg, 1842d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JNE | BPF_X] = jne_reg, 1843d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_EXIT] = goto_out, 1844d9ae7f2bSJakub Kicinski }; 1845d9ae7f2bSJakub Kicinski 1846d9ae7f2bSJakub Kicinski /* --- Misc code --- */ 1847d9ae7f2bSJakub Kicinski static void br_set_offset(u64 *instr, u16 offset) 1848d9ae7f2bSJakub Kicinski { 1849d9ae7f2bSJakub Kicinski u16 addr_lo, addr_hi; 1850d9ae7f2bSJakub Kicinski 1851d9ae7f2bSJakub Kicinski addr_lo = offset & (OP_BR_ADDR_LO >> __bf_shf(OP_BR_ADDR_LO)); 1852d9ae7f2bSJakub Kicinski addr_hi = offset != addr_lo; 1853d9ae7f2bSJakub Kicinski *instr &= ~(OP_BR_ADDR_HI | OP_BR_ADDR_LO); 1854d9ae7f2bSJakub Kicinski *instr |= FIELD_PREP(OP_BR_ADDR_HI, addr_hi); 1855d9ae7f2bSJakub Kicinski *instr |= FIELD_PREP(OP_BR_ADDR_LO, addr_lo); 1856d9ae7f2bSJakub Kicinski } 1857d9ae7f2bSJakub Kicinski 1858d9ae7f2bSJakub Kicinski /* --- Assembler logic --- */ 1859d9ae7f2bSJakub Kicinski static int nfp_fixup_branches(struct nfp_prog *nfp_prog) 1860d9ae7f2bSJakub Kicinski { 18615b674140SJiong Wang struct nfp_insn_meta *meta, *jmp_dst; 1862854dc87dSJiong Wang u32 idx, br_idx; 1863d9ae7f2bSJakub Kicinski 1864854dc87dSJiong Wang list_for_each_entry(meta, &nfp_prog->insns, l) { 1865d9ae7f2bSJakub Kicinski if (meta->skip) 1866d9ae7f2bSJakub Kicinski continue; 1867d9ae7f2bSJakub Kicinski if (BPF_CLASS(meta->insn.code) != BPF_JMP) 1868d9ae7f2bSJakub Kicinski continue; 1869d9ae7f2bSJakub Kicinski 18705b674140SJiong Wang if (list_is_last(&meta->l, &nfp_prog->insns)) 1871854dc87dSJiong Wang idx = nfp_prog->last_bpf_off; 18725b674140SJiong Wang else 18735b674140SJiong Wang idx = list_next_entry(meta, l)->off - 1; 1874854dc87dSJiong Wang 1875854dc87dSJiong Wang br_idx = nfp_prog_offset_to_index(nfp_prog, idx); 1876854dc87dSJiong Wang 1877d9ae7f2bSJakub Kicinski if (!nfp_is_br(nfp_prog->prog[br_idx])) { 1878d9ae7f2bSJakub Kicinski pr_err("Fixup found block not ending in branch %d %02x %016llx!!\n", 1879d9ae7f2bSJakub Kicinski br_idx, meta->insn.code, nfp_prog->prog[br_idx]); 1880d9ae7f2bSJakub Kicinski return -ELOOP; 1881d9ae7f2bSJakub Kicinski } 1882d9ae7f2bSJakub Kicinski /* Leave special branches for later */ 1883d9ae7f2bSJakub Kicinski if (FIELD_GET(OP_BR_SPECIAL, nfp_prog->prog[br_idx])) 1884d9ae7f2bSJakub Kicinski continue; 1885d9ae7f2bSJakub Kicinski 18865b674140SJiong Wang if (!meta->jmp_dst) { 18875b674140SJiong Wang pr_err("Non-exit jump doesn't have destination info recorded!!\n"); 1888d9ae7f2bSJakub Kicinski return -ELOOP; 1889d9ae7f2bSJakub Kicinski } 1890d9ae7f2bSJakub Kicinski 18915b674140SJiong Wang jmp_dst = meta->jmp_dst; 1892854dc87dSJiong Wang 18935b674140SJiong Wang if (jmp_dst->skip) { 1894d9ae7f2bSJakub Kicinski pr_err("Branch landing on removed instruction!!\n"); 1895d9ae7f2bSJakub Kicinski return -ELOOP; 1896d9ae7f2bSJakub Kicinski } 1897d9ae7f2bSJakub Kicinski 1898d9ae7f2bSJakub Kicinski for (idx = nfp_prog_offset_to_index(nfp_prog, meta->off); 1899d9ae7f2bSJakub Kicinski idx <= br_idx; idx++) { 1900d9ae7f2bSJakub Kicinski if (!nfp_is_br(nfp_prog->prog[idx])) 1901d9ae7f2bSJakub Kicinski continue; 19025b674140SJiong Wang br_set_offset(&nfp_prog->prog[idx], jmp_dst->off); 1903d9ae7f2bSJakub Kicinski } 1904d9ae7f2bSJakub Kicinski } 1905d9ae7f2bSJakub Kicinski 1906d9ae7f2bSJakub Kicinski /* Fixup 'goto out's separately, they can be scattered around */ 1907d9ae7f2bSJakub Kicinski for (br_idx = 0; br_idx < nfp_prog->prog_len; br_idx++) { 1908d9ae7f2bSJakub Kicinski enum br_special special; 1909d9ae7f2bSJakub Kicinski 1910d9ae7f2bSJakub Kicinski if ((nfp_prog->prog[br_idx] & OP_BR_BASE_MASK) != OP_BR_BASE) 1911d9ae7f2bSJakub Kicinski continue; 1912d9ae7f2bSJakub Kicinski 1913d9ae7f2bSJakub Kicinski special = FIELD_GET(OP_BR_SPECIAL, nfp_prog->prog[br_idx]); 1914d9ae7f2bSJakub Kicinski switch (special) { 1915d9ae7f2bSJakub Kicinski case OP_BR_NORMAL: 1916d9ae7f2bSJakub Kicinski break; 1917d9ae7f2bSJakub Kicinski case OP_BR_GO_OUT: 1918d9ae7f2bSJakub Kicinski br_set_offset(&nfp_prog->prog[br_idx], 1919d9ae7f2bSJakub Kicinski nfp_prog->tgt_out); 1920d9ae7f2bSJakub Kicinski break; 1921d9ae7f2bSJakub Kicinski case OP_BR_GO_ABORT: 1922d9ae7f2bSJakub Kicinski br_set_offset(&nfp_prog->prog[br_idx], 1923d9ae7f2bSJakub Kicinski nfp_prog->tgt_abort); 1924d9ae7f2bSJakub Kicinski break; 1925d9ae7f2bSJakub Kicinski } 1926d9ae7f2bSJakub Kicinski 1927d9ae7f2bSJakub Kicinski nfp_prog->prog[br_idx] &= ~OP_BR_SPECIAL; 1928d9ae7f2bSJakub Kicinski } 1929d9ae7f2bSJakub Kicinski 1930d9ae7f2bSJakub Kicinski return 0; 1931d9ae7f2bSJakub Kicinski } 1932d9ae7f2bSJakub Kicinski 1933d9ae7f2bSJakub Kicinski static void nfp_intro(struct nfp_prog *nfp_prog) 1934d9ae7f2bSJakub Kicinski { 193518e53b6cSJakub Kicinski wrp_immed(nfp_prog, plen_reg(nfp_prog), GENMASK(13, 0)); 193618e53b6cSJakub Kicinski emit_alu(nfp_prog, plen_reg(nfp_prog), 193718e53b6cSJakub Kicinski plen_reg(nfp_prog), ALU_OP_AND, pv_len(nfp_prog)); 1938d9ae7f2bSJakub Kicinski } 1939d9ae7f2bSJakub Kicinski 1940d9ae7f2bSJakub Kicinski static void nfp_outro_tc_da(struct nfp_prog *nfp_prog) 1941d9ae7f2bSJakub Kicinski { 1942d9ae7f2bSJakub Kicinski /* TC direct-action mode: 1943d9ae7f2bSJakub Kicinski * 0,1 ok NOT SUPPORTED[1] 1944d9ae7f2bSJakub Kicinski * 2 drop 0x22 -> drop, count as stat1 1945d9ae7f2bSJakub Kicinski * 4,5 nuke 0x02 -> drop 1946d9ae7f2bSJakub Kicinski * 7 redir 0x44 -> redir, count as stat2 1947d9ae7f2bSJakub Kicinski * * unspec 0x11 -> pass, count as stat0 1948d9ae7f2bSJakub Kicinski * 1949d9ae7f2bSJakub Kicinski * [1] We can't support OK and RECLASSIFY because we can't tell TC 1950d9ae7f2bSJakub Kicinski * the exact decision made. We are forced to support UNSPEC 1951d9ae7f2bSJakub Kicinski * to handle aborts so that's the only one we handle for passing 1952d9ae7f2bSJakub Kicinski * packets up the stack. 1953d9ae7f2bSJakub Kicinski */ 1954d9ae7f2bSJakub Kicinski /* Target for aborts */ 1955d9ae7f2bSJakub Kicinski nfp_prog->tgt_abort = nfp_prog_current_offset(nfp_prog); 1956d9ae7f2bSJakub Kicinski 1957d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 1958d9ae7f2bSJakub Kicinski 1959c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 1960d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_imm(0x11), SHF_SC_L_SHF, 16); 1961d9ae7f2bSJakub Kicinski 1962d9ae7f2bSJakub Kicinski /* Target for normal exits */ 1963d9ae7f2bSJakub Kicinski nfp_prog->tgt_out = nfp_prog_current_offset(nfp_prog); 1964d9ae7f2bSJakub Kicinski 1965d9ae7f2bSJakub Kicinski /* if R0 > 7 jump to abort */ 1966d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_imm(7), ALU_OP_SUB, reg_b(0)); 1967d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BLO, nfp_prog->tgt_abort, 0); 1968c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 1969d9ae7f2bSJakub Kicinski 1970d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_b(2), 0x41221211); 1971d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_b(3), 0x41001211); 1972d9ae7f2bSJakub Kicinski 1973d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_a(1), 1974d9ae7f2bSJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(0), SHF_SC_L_SHF, 2); 1975d9ae7f2bSJakub Kicinski 1976d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(1), ALU_OP_OR, reg_imm(0)); 1977d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_a(2), 1978d9ae7f2bSJakub Kicinski reg_imm(0xf), SHF_OP_AND, reg_b(2), SHF_SC_R_SHF, 0); 1979d9ae7f2bSJakub Kicinski 1980d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(1), ALU_OP_OR, reg_imm(0)); 1981d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_b(2), 1982d9ae7f2bSJakub Kicinski reg_imm(0xf), SHF_OP_AND, reg_b(3), SHF_SC_R_SHF, 0); 1983d9ae7f2bSJakub Kicinski 1984d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 1985d9ae7f2bSJakub Kicinski 1986d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_b(2), 1987d9ae7f2bSJakub Kicinski reg_a(2), SHF_OP_OR, reg_b(2), SHF_SC_L_SHF, 4); 1988d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_b(2), SHF_SC_L_SHF, 16); 1989d9ae7f2bSJakub Kicinski } 1990d9ae7f2bSJakub Kicinski 1991d9ae7f2bSJakub Kicinski static void nfp_outro_xdp(struct nfp_prog *nfp_prog) 1992d9ae7f2bSJakub Kicinski { 1993d9ae7f2bSJakub Kicinski /* XDP return codes: 1994d9ae7f2bSJakub Kicinski * 0 aborted 0x82 -> drop, count as stat3 1995d9ae7f2bSJakub Kicinski * 1 drop 0x22 -> drop, count as stat1 1996d9ae7f2bSJakub Kicinski * 2 pass 0x11 -> pass, count as stat0 1997d9ae7f2bSJakub Kicinski * 3 tx 0x44 -> redir, count as stat2 1998d9ae7f2bSJakub Kicinski * * unknown 0x82 -> drop, count as stat3 1999d9ae7f2bSJakub Kicinski */ 2000d9ae7f2bSJakub Kicinski /* Target for aborts */ 2001d9ae7f2bSJakub Kicinski nfp_prog->tgt_abort = nfp_prog_current_offset(nfp_prog); 2002d9ae7f2bSJakub Kicinski 2003d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 2004d9ae7f2bSJakub Kicinski 2005c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 2006d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_imm(0x82), SHF_SC_L_SHF, 16); 2007d9ae7f2bSJakub Kicinski 2008d9ae7f2bSJakub Kicinski /* Target for normal exits */ 2009d9ae7f2bSJakub Kicinski nfp_prog->tgt_out = nfp_prog_current_offset(nfp_prog); 2010d9ae7f2bSJakub Kicinski 2011d9ae7f2bSJakub Kicinski /* if R0 > 3 jump to abort */ 2012d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_imm(3), ALU_OP_SUB, reg_b(0)); 2013d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BLO, nfp_prog->tgt_abort, 0); 2014d9ae7f2bSJakub Kicinski 2015d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_b(2), 0x44112282); 2016d9ae7f2bSJakub Kicinski 2017d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_a(1), 2018d9ae7f2bSJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(0), SHF_SC_L_SHF, 3); 2019d9ae7f2bSJakub Kicinski 2020d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(1), ALU_OP_OR, reg_imm(0)); 2021d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_b(2), 2022d9ae7f2bSJakub Kicinski reg_imm(0xff), SHF_OP_AND, reg_b(2), SHF_SC_R_SHF, 0); 2023d9ae7f2bSJakub Kicinski 2024d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 2025d9ae7f2bSJakub Kicinski 2026c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 2027d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_b(2), SHF_SC_L_SHF, 16); 2028d9ae7f2bSJakub Kicinski } 2029d9ae7f2bSJakub Kicinski 2030d9ae7f2bSJakub Kicinski static void nfp_outro(struct nfp_prog *nfp_prog) 2031d9ae7f2bSJakub Kicinski { 2032012bb8a8SJakub Kicinski switch (nfp_prog->type) { 2033012bb8a8SJakub Kicinski case BPF_PROG_TYPE_SCHED_CLS: 2034d9ae7f2bSJakub Kicinski nfp_outro_tc_da(nfp_prog); 2035d9ae7f2bSJakub Kicinski break; 2036012bb8a8SJakub Kicinski case BPF_PROG_TYPE_XDP: 2037d9ae7f2bSJakub Kicinski nfp_outro_xdp(nfp_prog); 2038d9ae7f2bSJakub Kicinski break; 2039012bb8a8SJakub Kicinski default: 2040012bb8a8SJakub Kicinski WARN_ON(1); 2041d9ae7f2bSJakub Kicinski } 2042d9ae7f2bSJakub Kicinski } 2043d9ae7f2bSJakub Kicinski 2044d9ae7f2bSJakub Kicinski static int nfp_translate(struct nfp_prog *nfp_prog) 2045d9ae7f2bSJakub Kicinski { 2046d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta; 2047ff42bb9fSJakub Kicinski int err; 2048d9ae7f2bSJakub Kicinski 2049d9ae7f2bSJakub Kicinski nfp_intro(nfp_prog); 2050d9ae7f2bSJakub Kicinski if (nfp_prog->error) 2051d9ae7f2bSJakub Kicinski return nfp_prog->error; 2052d9ae7f2bSJakub Kicinski 2053d9ae7f2bSJakub Kicinski list_for_each_entry(meta, &nfp_prog->insns, l) { 2054d9ae7f2bSJakub Kicinski instr_cb_t cb = instr_cb[meta->insn.code]; 2055d9ae7f2bSJakub Kicinski 2056d9ae7f2bSJakub Kicinski meta->off = nfp_prog_current_offset(nfp_prog); 2057d9ae7f2bSJakub Kicinski 2058d9ae7f2bSJakub Kicinski if (meta->skip) { 2059d9ae7f2bSJakub Kicinski nfp_prog->n_translated++; 2060d9ae7f2bSJakub Kicinski continue; 2061d9ae7f2bSJakub Kicinski } 2062d9ae7f2bSJakub Kicinski 2063d9ae7f2bSJakub Kicinski if (nfp_meta_has_prev(nfp_prog, meta) && 2064d9ae7f2bSJakub Kicinski nfp_meta_prev(meta)->double_cb) 2065d9ae7f2bSJakub Kicinski cb = nfp_meta_prev(meta)->double_cb; 2066d9ae7f2bSJakub Kicinski if (!cb) 2067d9ae7f2bSJakub Kicinski return -ENOENT; 2068d9ae7f2bSJakub Kicinski err = cb(nfp_prog, meta); 2069d9ae7f2bSJakub Kicinski if (err) 2070d9ae7f2bSJakub Kicinski return err; 2071d9ae7f2bSJakub Kicinski 2072d9ae7f2bSJakub Kicinski nfp_prog->n_translated++; 2073d9ae7f2bSJakub Kicinski } 2074d9ae7f2bSJakub Kicinski 2075854dc87dSJiong Wang nfp_prog->last_bpf_off = nfp_prog_current_offset(nfp_prog) - 1; 2076854dc87dSJiong Wang 2077d9ae7f2bSJakub Kicinski nfp_outro(nfp_prog); 2078d9ae7f2bSJakub Kicinski if (nfp_prog->error) 2079d9ae7f2bSJakub Kicinski return nfp_prog->error; 2080d9ae7f2bSJakub Kicinski 2081ff42bb9fSJakub Kicinski wrp_nops(nfp_prog, NFP_USTORE_PREFETCH_WINDOW); 20821c03e03fSJakub Kicinski if (nfp_prog->error) 20831c03e03fSJakub Kicinski return nfp_prog->error; 20841c03e03fSJakub Kicinski 2085d9ae7f2bSJakub Kicinski return nfp_fixup_branches(nfp_prog); 2086d9ae7f2bSJakub Kicinski } 2087d9ae7f2bSJakub Kicinski 2088d9ae7f2bSJakub Kicinski /* --- Optimizations --- */ 2089d9ae7f2bSJakub Kicinski static void nfp_bpf_opt_reg_init(struct nfp_prog *nfp_prog) 2090d9ae7f2bSJakub Kicinski { 2091d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta; 2092d9ae7f2bSJakub Kicinski 2093d9ae7f2bSJakub Kicinski list_for_each_entry(meta, &nfp_prog->insns, l) { 2094d9ae7f2bSJakub Kicinski struct bpf_insn insn = meta->insn; 2095d9ae7f2bSJakub Kicinski 2096d9ae7f2bSJakub Kicinski /* Programs converted from cBPF start with register xoring */ 2097d9ae7f2bSJakub Kicinski if (insn.code == (BPF_ALU64 | BPF_XOR | BPF_X) && 2098d9ae7f2bSJakub Kicinski insn.src_reg == insn.dst_reg) 2099d9ae7f2bSJakub Kicinski continue; 2100d9ae7f2bSJakub Kicinski 2101d9ae7f2bSJakub Kicinski /* Programs start with R6 = R1 but we ignore the skb pointer */ 2102d9ae7f2bSJakub Kicinski if (insn.code == (BPF_ALU64 | BPF_MOV | BPF_X) && 2103d9ae7f2bSJakub Kicinski insn.src_reg == 1 && insn.dst_reg == 6) 2104d9ae7f2bSJakub Kicinski meta->skip = true; 2105d9ae7f2bSJakub Kicinski 2106d9ae7f2bSJakub Kicinski /* Return as soon as something doesn't match */ 2107d9ae7f2bSJakub Kicinski if (!meta->skip) 2108d9ae7f2bSJakub Kicinski return; 2109d9ae7f2bSJakub Kicinski } 2110d9ae7f2bSJakub Kicinski } 2111d9ae7f2bSJakub Kicinski 2112d9ae7f2bSJakub Kicinski /* Remove masking after load since our load guarantees this is not needed */ 2113d9ae7f2bSJakub Kicinski static void nfp_bpf_opt_ld_mask(struct nfp_prog *nfp_prog) 2114d9ae7f2bSJakub Kicinski { 2115d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta1, *meta2; 2116d9ae7f2bSJakub Kicinski const s32 exp_mask[] = { 2117d9ae7f2bSJakub Kicinski [BPF_B] = 0x000000ffU, 2118d9ae7f2bSJakub Kicinski [BPF_H] = 0x0000ffffU, 2119d9ae7f2bSJakub Kicinski [BPF_W] = 0xffffffffU, 2120d9ae7f2bSJakub Kicinski }; 2121d9ae7f2bSJakub Kicinski 2122d9ae7f2bSJakub Kicinski nfp_for_each_insn_walk2(nfp_prog, meta1, meta2) { 2123d9ae7f2bSJakub Kicinski struct bpf_insn insn, next; 2124d9ae7f2bSJakub Kicinski 2125d9ae7f2bSJakub Kicinski insn = meta1->insn; 2126d9ae7f2bSJakub Kicinski next = meta2->insn; 2127d9ae7f2bSJakub Kicinski 2128d9ae7f2bSJakub Kicinski if (BPF_CLASS(insn.code) != BPF_LD) 2129d9ae7f2bSJakub Kicinski continue; 2130d9ae7f2bSJakub Kicinski if (BPF_MODE(insn.code) != BPF_ABS && 2131d9ae7f2bSJakub Kicinski BPF_MODE(insn.code) != BPF_IND) 2132d9ae7f2bSJakub Kicinski continue; 2133d9ae7f2bSJakub Kicinski 2134d9ae7f2bSJakub Kicinski if (next.code != (BPF_ALU64 | BPF_AND | BPF_K)) 2135d9ae7f2bSJakub Kicinski continue; 2136d9ae7f2bSJakub Kicinski 2137d9ae7f2bSJakub Kicinski if (!exp_mask[BPF_SIZE(insn.code)]) 2138d9ae7f2bSJakub Kicinski continue; 2139d9ae7f2bSJakub Kicinski if (exp_mask[BPF_SIZE(insn.code)] != next.imm) 2140d9ae7f2bSJakub Kicinski continue; 2141d9ae7f2bSJakub Kicinski 2142d9ae7f2bSJakub Kicinski if (next.src_reg || next.dst_reg) 2143d9ae7f2bSJakub Kicinski continue; 2144d9ae7f2bSJakub Kicinski 2145d9ae7f2bSJakub Kicinski meta2->skip = true; 2146d9ae7f2bSJakub Kicinski } 2147d9ae7f2bSJakub Kicinski } 2148d9ae7f2bSJakub Kicinski 2149d9ae7f2bSJakub Kicinski static void nfp_bpf_opt_ld_shift(struct nfp_prog *nfp_prog) 2150d9ae7f2bSJakub Kicinski { 2151d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta1, *meta2, *meta3; 2152d9ae7f2bSJakub Kicinski 2153d9ae7f2bSJakub Kicinski nfp_for_each_insn_walk3(nfp_prog, meta1, meta2, meta3) { 2154d9ae7f2bSJakub Kicinski struct bpf_insn insn, next1, next2; 2155d9ae7f2bSJakub Kicinski 2156d9ae7f2bSJakub Kicinski insn = meta1->insn; 2157d9ae7f2bSJakub Kicinski next1 = meta2->insn; 2158d9ae7f2bSJakub Kicinski next2 = meta3->insn; 2159d9ae7f2bSJakub Kicinski 2160d9ae7f2bSJakub Kicinski if (BPF_CLASS(insn.code) != BPF_LD) 2161d9ae7f2bSJakub Kicinski continue; 2162d9ae7f2bSJakub Kicinski if (BPF_MODE(insn.code) != BPF_ABS && 2163d9ae7f2bSJakub Kicinski BPF_MODE(insn.code) != BPF_IND) 2164d9ae7f2bSJakub Kicinski continue; 2165d9ae7f2bSJakub Kicinski if (BPF_SIZE(insn.code) != BPF_W) 2166d9ae7f2bSJakub Kicinski continue; 2167d9ae7f2bSJakub Kicinski 2168d9ae7f2bSJakub Kicinski if (!(next1.code == (BPF_LSH | BPF_K | BPF_ALU64) && 2169d9ae7f2bSJakub Kicinski next2.code == (BPF_RSH | BPF_K | BPF_ALU64)) && 2170d9ae7f2bSJakub Kicinski !(next1.code == (BPF_RSH | BPF_K | BPF_ALU64) && 2171d9ae7f2bSJakub Kicinski next2.code == (BPF_LSH | BPF_K | BPF_ALU64))) 2172d9ae7f2bSJakub Kicinski continue; 2173d9ae7f2bSJakub Kicinski 2174d9ae7f2bSJakub Kicinski if (next1.src_reg || next1.dst_reg || 2175d9ae7f2bSJakub Kicinski next2.src_reg || next2.dst_reg) 2176d9ae7f2bSJakub Kicinski continue; 2177d9ae7f2bSJakub Kicinski 2178d9ae7f2bSJakub Kicinski if (next1.imm != 0x20 || next2.imm != 0x20) 2179d9ae7f2bSJakub Kicinski continue; 2180d9ae7f2bSJakub Kicinski 2181d9ae7f2bSJakub Kicinski meta2->skip = true; 2182d9ae7f2bSJakub Kicinski meta3->skip = true; 2183d9ae7f2bSJakub Kicinski } 2184d9ae7f2bSJakub Kicinski } 2185d9ae7f2bSJakub Kicinski 2186d9ae7f2bSJakub Kicinski static int nfp_bpf_optimize(struct nfp_prog *nfp_prog) 2187d9ae7f2bSJakub Kicinski { 2188d9ae7f2bSJakub Kicinski nfp_bpf_opt_reg_init(nfp_prog); 2189d9ae7f2bSJakub Kicinski 2190d9ae7f2bSJakub Kicinski nfp_bpf_opt_ld_mask(nfp_prog); 2191d9ae7f2bSJakub Kicinski nfp_bpf_opt_ld_shift(nfp_prog); 2192d9ae7f2bSJakub Kicinski 2193d9ae7f2bSJakub Kicinski return 0; 2194d9ae7f2bSJakub Kicinski } 2195d9ae7f2bSJakub Kicinski 21962e85d388SJakub Kicinski static int nfp_bpf_ustore_calc(struct nfp_prog *nfp_prog, __le64 *ustore) 2197fd068ddcSJakub Kicinski { 2198fd068ddcSJakub Kicinski int i; 2199fd068ddcSJakub Kicinski 2200fd068ddcSJakub Kicinski for (i = 0; i < nfp_prog->prog_len; i++) { 2201fd068ddcSJakub Kicinski int err; 2202fd068ddcSJakub Kicinski 2203fd068ddcSJakub Kicinski err = nfp_ustore_check_valid_no_ecc(nfp_prog->prog[i]); 2204fd068ddcSJakub Kicinski if (err) 2205fd068ddcSJakub Kicinski return err; 2206fd068ddcSJakub Kicinski 2207fd068ddcSJakub Kicinski nfp_prog->prog[i] = nfp_ustore_calc_ecc_insn(nfp_prog->prog[i]); 22082e85d388SJakub Kicinski 22092e85d388SJakub Kicinski ustore[i] = cpu_to_le64(nfp_prog->prog[i]); 2210fd068ddcSJakub Kicinski } 2211fd068ddcSJakub Kicinski 2212fd068ddcSJakub Kicinski return 0; 2213fd068ddcSJakub Kicinski } 2214fd068ddcSJakub Kicinski 2215c6c580d7SJakub Kicinski int nfp_bpf_jit(struct nfp_prog *nfp_prog) 2216d9ae7f2bSJakub Kicinski { 2217d9ae7f2bSJakub Kicinski int ret; 2218d9ae7f2bSJakub Kicinski 2219d9ae7f2bSJakub Kicinski ret = nfp_bpf_optimize(nfp_prog); 2220d9ae7f2bSJakub Kicinski if (ret) 22219314c442SJakub Kicinski return ret; 2222d9ae7f2bSJakub Kicinski 2223d9ae7f2bSJakub Kicinski ret = nfp_translate(nfp_prog); 2224d9ae7f2bSJakub Kicinski if (ret) { 2225d9ae7f2bSJakub Kicinski pr_err("Translation failed with error %d (translated: %u)\n", 2226d9ae7f2bSJakub Kicinski ret, nfp_prog->n_translated); 22279314c442SJakub Kicinski return -EINVAL; 2228d9ae7f2bSJakub Kicinski } 2229d9ae7f2bSJakub Kicinski 22309314c442SJakub Kicinski return nfp_bpf_ustore_calc(nfp_prog, (__force __le64 *)nfp_prog->prog); 2231d9ae7f2bSJakub Kicinski } 2232