1d9ae7f2bSJakub Kicinski /* 2d9ae7f2bSJakub Kicinski * Copyright (C) 2016 Netronome Systems, Inc. 3d9ae7f2bSJakub Kicinski * 4d9ae7f2bSJakub Kicinski * This software is dual licensed under the GNU General License Version 2, 5d9ae7f2bSJakub Kicinski * June 1991 as shown in the file COPYING in the top-level directory of this 6d9ae7f2bSJakub Kicinski * source tree or the BSD 2-Clause License provided below. You have the 7d9ae7f2bSJakub Kicinski * option to license this software under the complete terms of either license. 8d9ae7f2bSJakub Kicinski * 9d9ae7f2bSJakub Kicinski * The BSD 2-Clause License: 10d9ae7f2bSJakub Kicinski * 11d9ae7f2bSJakub Kicinski * Redistribution and use in source and binary forms, with or 12d9ae7f2bSJakub Kicinski * without modification, are permitted provided that the following 13d9ae7f2bSJakub Kicinski * conditions are met: 14d9ae7f2bSJakub Kicinski * 15d9ae7f2bSJakub Kicinski * 1. Redistributions of source code must retain the above 16d9ae7f2bSJakub Kicinski * copyright notice, this list of conditions and the following 17d9ae7f2bSJakub Kicinski * disclaimer. 18d9ae7f2bSJakub Kicinski * 19d9ae7f2bSJakub Kicinski * 2. Redistributions in binary form must reproduce the above 20d9ae7f2bSJakub Kicinski * copyright notice, this list of conditions and the following 21d9ae7f2bSJakub Kicinski * disclaimer in the documentation and/or other materials 22d9ae7f2bSJakub Kicinski * provided with the distribution. 23d9ae7f2bSJakub Kicinski * 24d9ae7f2bSJakub Kicinski * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 25d9ae7f2bSJakub Kicinski * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 26d9ae7f2bSJakub Kicinski * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 27d9ae7f2bSJakub Kicinski * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 28d9ae7f2bSJakub Kicinski * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 29d9ae7f2bSJakub Kicinski * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 30d9ae7f2bSJakub Kicinski * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 31d9ae7f2bSJakub Kicinski * SOFTWARE. 32d9ae7f2bSJakub Kicinski */ 33d9ae7f2bSJakub Kicinski 34d9ae7f2bSJakub Kicinski #define pr_fmt(fmt) "NFP net bpf: " fmt 35d9ae7f2bSJakub Kicinski 36d9ae7f2bSJakub Kicinski #include <linux/kernel.h> 37d9ae7f2bSJakub Kicinski #include <linux/bpf.h> 38d9ae7f2bSJakub Kicinski #include <linux/filter.h> 39d9ae7f2bSJakub Kicinski #include <linux/pkt_cls.h> 40d9ae7f2bSJakub Kicinski #include <linux/unistd.h> 41d9ae7f2bSJakub Kicinski 42d9ae7f2bSJakub Kicinski #include "main.h" 43d9ae7f2bSJakub Kicinski #include "../nfp_asm.h" 44d9ae7f2bSJakub Kicinski 45d9ae7f2bSJakub Kicinski /* --- NFP prog --- */ 46d9ae7f2bSJakub Kicinski /* Foreach "multiple" entries macros provide pos and next<n> pointers. 47d9ae7f2bSJakub Kicinski * It's safe to modify the next pointers (but not pos). 48d9ae7f2bSJakub Kicinski */ 49d9ae7f2bSJakub Kicinski #define nfp_for_each_insn_walk2(nfp_prog, pos, next) \ 50d9ae7f2bSJakub Kicinski for (pos = list_first_entry(&(nfp_prog)->insns, typeof(*pos), l), \ 51d9ae7f2bSJakub Kicinski next = list_next_entry(pos, l); \ 52d9ae7f2bSJakub Kicinski &(nfp_prog)->insns != &pos->l && \ 53d9ae7f2bSJakub Kicinski &(nfp_prog)->insns != &next->l; \ 54d9ae7f2bSJakub Kicinski pos = nfp_meta_next(pos), \ 55d9ae7f2bSJakub Kicinski next = nfp_meta_next(pos)) 56d9ae7f2bSJakub Kicinski 57d9ae7f2bSJakub Kicinski #define nfp_for_each_insn_walk3(nfp_prog, pos, next, next2) \ 58d9ae7f2bSJakub Kicinski for (pos = list_first_entry(&(nfp_prog)->insns, typeof(*pos), l), \ 59d9ae7f2bSJakub Kicinski next = list_next_entry(pos, l), \ 60d9ae7f2bSJakub Kicinski next2 = list_next_entry(next, l); \ 61d9ae7f2bSJakub Kicinski &(nfp_prog)->insns != &pos->l && \ 62d9ae7f2bSJakub Kicinski &(nfp_prog)->insns != &next->l && \ 63d9ae7f2bSJakub Kicinski &(nfp_prog)->insns != &next2->l; \ 64d9ae7f2bSJakub Kicinski pos = nfp_meta_next(pos), \ 65d9ae7f2bSJakub Kicinski next = nfp_meta_next(pos), \ 66d9ae7f2bSJakub Kicinski next2 = nfp_meta_next(next)) 67d9ae7f2bSJakub Kicinski 68d9ae7f2bSJakub Kicinski static bool 69d9ae7f2bSJakub Kicinski nfp_meta_has_next(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 70d9ae7f2bSJakub Kicinski { 71d9ae7f2bSJakub Kicinski return meta->l.next != &nfp_prog->insns; 72d9ae7f2bSJakub Kicinski } 73d9ae7f2bSJakub Kicinski 74d9ae7f2bSJakub Kicinski static bool 75d9ae7f2bSJakub Kicinski nfp_meta_has_prev(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 76d9ae7f2bSJakub Kicinski { 77d9ae7f2bSJakub Kicinski return meta->l.prev != &nfp_prog->insns; 78d9ae7f2bSJakub Kicinski } 79d9ae7f2bSJakub Kicinski 80d9ae7f2bSJakub Kicinski static void nfp_prog_free(struct nfp_prog *nfp_prog) 81d9ae7f2bSJakub Kicinski { 82d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta, *tmp; 83d9ae7f2bSJakub Kicinski 84d9ae7f2bSJakub Kicinski list_for_each_entry_safe(meta, tmp, &nfp_prog->insns, l) { 85d9ae7f2bSJakub Kicinski list_del(&meta->l); 86d9ae7f2bSJakub Kicinski kfree(meta); 87d9ae7f2bSJakub Kicinski } 88d9ae7f2bSJakub Kicinski kfree(nfp_prog); 89d9ae7f2bSJakub Kicinski } 90d9ae7f2bSJakub Kicinski 91d9ae7f2bSJakub Kicinski static void nfp_prog_push(struct nfp_prog *nfp_prog, u64 insn) 92d9ae7f2bSJakub Kicinski { 93d9ae7f2bSJakub Kicinski if (nfp_prog->__prog_alloc_len == nfp_prog->prog_len) { 94d9ae7f2bSJakub Kicinski nfp_prog->error = -ENOSPC; 95d9ae7f2bSJakub Kicinski return; 96d9ae7f2bSJakub Kicinski } 97d9ae7f2bSJakub Kicinski 98d9ae7f2bSJakub Kicinski nfp_prog->prog[nfp_prog->prog_len] = insn; 99d9ae7f2bSJakub Kicinski nfp_prog->prog_len++; 100d9ae7f2bSJakub Kicinski } 101d9ae7f2bSJakub Kicinski 102d9ae7f2bSJakub Kicinski static unsigned int nfp_prog_current_offset(struct nfp_prog *nfp_prog) 103d9ae7f2bSJakub Kicinski { 104d9ae7f2bSJakub Kicinski return nfp_prog->start_off + nfp_prog->prog_len; 105d9ae7f2bSJakub Kicinski } 106d9ae7f2bSJakub Kicinski 107d9ae7f2bSJakub Kicinski static unsigned int 108d9ae7f2bSJakub Kicinski nfp_prog_offset_to_index(struct nfp_prog *nfp_prog, unsigned int offset) 109d9ae7f2bSJakub Kicinski { 110d9ae7f2bSJakub Kicinski return offset - nfp_prog->start_off; 111d9ae7f2bSJakub Kicinski } 112d9ae7f2bSJakub Kicinski 113d9ae7f2bSJakub Kicinski /* --- Emitters --- */ 114d9ae7f2bSJakub Kicinski static void 115d9ae7f2bSJakub Kicinski __emit_cmd(struct nfp_prog *nfp_prog, enum cmd_tgt_map op, 116d9ae7f2bSJakub Kicinski u8 mode, u8 xfer, u8 areg, u8 breg, u8 size, bool sync) 117d9ae7f2bSJakub Kicinski { 118d9ae7f2bSJakub Kicinski enum cmd_ctx_swap ctx; 119d9ae7f2bSJakub Kicinski u64 insn; 120d9ae7f2bSJakub Kicinski 121d9ae7f2bSJakub Kicinski if (sync) 122d9ae7f2bSJakub Kicinski ctx = CMD_CTX_SWAP; 123d9ae7f2bSJakub Kicinski else 124d9ae7f2bSJakub Kicinski ctx = CMD_CTX_NO_SWAP; 125d9ae7f2bSJakub Kicinski 126d9ae7f2bSJakub Kicinski insn = FIELD_PREP(OP_CMD_A_SRC, areg) | 127d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_CTX, ctx) | 128d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_B_SRC, breg) | 129d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_TOKEN, cmd_tgt_act[op].token) | 130d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_XFER, xfer) | 131d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_CNT, size) | 132d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_SIG, sync) | 133d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_TGT_CMD, cmd_tgt_act[op].tgt_cmd) | 134d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_MODE, mode); 135d9ae7f2bSJakub Kicinski 136d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 137d9ae7f2bSJakub Kicinski } 138d9ae7f2bSJakub Kicinski 139d9ae7f2bSJakub Kicinski static void 140d9ae7f2bSJakub Kicinski emit_cmd(struct nfp_prog *nfp_prog, enum cmd_tgt_map op, 141b3f868dfSJakub Kicinski u8 mode, u8 xfer, swreg lreg, swreg rreg, u8 size, bool sync) 142d9ae7f2bSJakub Kicinski { 143d9ae7f2bSJakub Kicinski struct nfp_insn_re_regs reg; 144d9ae7f2bSJakub Kicinski int err; 145d9ae7f2bSJakub Kicinski 146d9ae7f2bSJakub Kicinski err = swreg_to_restricted(reg_none(), lreg, rreg, ®, false); 147d9ae7f2bSJakub Kicinski if (err) { 148d9ae7f2bSJakub Kicinski nfp_prog->error = err; 149d9ae7f2bSJakub Kicinski return; 150d9ae7f2bSJakub Kicinski } 151d9ae7f2bSJakub Kicinski if (reg.swap) { 152d9ae7f2bSJakub Kicinski pr_err("cmd can't swap arguments\n"); 153d9ae7f2bSJakub Kicinski nfp_prog->error = -EFAULT; 154d9ae7f2bSJakub Kicinski return; 155d9ae7f2bSJakub Kicinski } 156995e101fSJakub Kicinski if (reg.dst_lmextn || reg.src_lmextn) { 157995e101fSJakub Kicinski pr_err("cmd can't use LMextn\n"); 158995e101fSJakub Kicinski nfp_prog->error = -EFAULT; 159995e101fSJakub Kicinski return; 160995e101fSJakub Kicinski } 161d9ae7f2bSJakub Kicinski 162d9ae7f2bSJakub Kicinski __emit_cmd(nfp_prog, op, mode, xfer, reg.areg, reg.breg, size, sync); 163d9ae7f2bSJakub Kicinski } 164d9ae7f2bSJakub Kicinski 165d9ae7f2bSJakub Kicinski static void 166d9ae7f2bSJakub Kicinski __emit_br(struct nfp_prog *nfp_prog, enum br_mask mask, enum br_ev_pip ev_pip, 167d9ae7f2bSJakub Kicinski enum br_ctx_signal_state css, u16 addr, u8 defer) 168d9ae7f2bSJakub Kicinski { 169d9ae7f2bSJakub Kicinski u16 addr_lo, addr_hi; 170d9ae7f2bSJakub Kicinski u64 insn; 171d9ae7f2bSJakub Kicinski 172d9ae7f2bSJakub Kicinski addr_lo = addr & (OP_BR_ADDR_LO >> __bf_shf(OP_BR_ADDR_LO)); 173d9ae7f2bSJakub Kicinski addr_hi = addr != addr_lo; 174d9ae7f2bSJakub Kicinski 175d9ae7f2bSJakub Kicinski insn = OP_BR_BASE | 176d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_MASK, mask) | 177d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_EV_PIP, ev_pip) | 178d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_CSS, css) | 179d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_DEFBR, defer) | 180d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_ADDR_LO, addr_lo) | 181d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_ADDR_HI, addr_hi); 182d9ae7f2bSJakub Kicinski 183d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 184d9ae7f2bSJakub Kicinski } 185d9ae7f2bSJakub Kicinski 186d9ae7f2bSJakub Kicinski static void emit_br_def(struct nfp_prog *nfp_prog, u16 addr, u8 defer) 187d9ae7f2bSJakub Kicinski { 188d9ae7f2bSJakub Kicinski if (defer > 2) { 189d9ae7f2bSJakub Kicinski pr_err("BUG: branch defer out of bounds %d\n", defer); 190d9ae7f2bSJakub Kicinski nfp_prog->error = -EFAULT; 191d9ae7f2bSJakub Kicinski return; 192d9ae7f2bSJakub Kicinski } 193d9ae7f2bSJakub Kicinski __emit_br(nfp_prog, BR_UNC, BR_EV_PIP_UNCOND, BR_CSS_NONE, addr, defer); 194d9ae7f2bSJakub Kicinski } 195d9ae7f2bSJakub Kicinski 196d9ae7f2bSJakub Kicinski static void 197d9ae7f2bSJakub Kicinski emit_br(struct nfp_prog *nfp_prog, enum br_mask mask, u16 addr, u8 defer) 198d9ae7f2bSJakub Kicinski { 199d9ae7f2bSJakub Kicinski __emit_br(nfp_prog, mask, 200d9ae7f2bSJakub Kicinski mask != BR_UNC ? BR_EV_PIP_COND : BR_EV_PIP_UNCOND, 201d9ae7f2bSJakub Kicinski BR_CSS_NONE, addr, defer); 202d9ae7f2bSJakub Kicinski } 203d9ae7f2bSJakub Kicinski 204d9ae7f2bSJakub Kicinski static void 205d9ae7f2bSJakub Kicinski __emit_immed(struct nfp_prog *nfp_prog, u16 areg, u16 breg, u16 imm_hi, 206d9ae7f2bSJakub Kicinski enum immed_width width, bool invert, 207995e101fSJakub Kicinski enum immed_shift shift, bool wr_both, 208995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 209d9ae7f2bSJakub Kicinski { 210d9ae7f2bSJakub Kicinski u64 insn; 211d9ae7f2bSJakub Kicinski 212d9ae7f2bSJakub Kicinski insn = OP_IMMED_BASE | 213d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_A_SRC, areg) | 214d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_B_SRC, breg) | 215d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_IMM, imm_hi) | 216d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_WIDTH, width) | 217d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_INV, invert) | 218d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_SHIFT, shift) | 219995e101fSJakub Kicinski FIELD_PREP(OP_IMMED_WR_AB, wr_both) | 220995e101fSJakub Kicinski FIELD_PREP(OP_IMMED_SRC_LMEXTN, src_lmextn) | 221995e101fSJakub Kicinski FIELD_PREP(OP_IMMED_DST_LMEXTN, dst_lmextn); 222d9ae7f2bSJakub Kicinski 223d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 224d9ae7f2bSJakub Kicinski } 225d9ae7f2bSJakub Kicinski 226d9ae7f2bSJakub Kicinski static void 227b3f868dfSJakub Kicinski emit_immed(struct nfp_prog *nfp_prog, swreg dst, u16 imm, 228d9ae7f2bSJakub Kicinski enum immed_width width, bool invert, enum immed_shift shift) 229d9ae7f2bSJakub Kicinski { 230d9ae7f2bSJakub Kicinski struct nfp_insn_ur_regs reg; 231d9ae7f2bSJakub Kicinski int err; 232d9ae7f2bSJakub Kicinski 233b3f868dfSJakub Kicinski if (swreg_type(dst) == NN_REG_IMM) { 234d9ae7f2bSJakub Kicinski nfp_prog->error = -EFAULT; 235d9ae7f2bSJakub Kicinski return; 236d9ae7f2bSJakub Kicinski } 237d9ae7f2bSJakub Kicinski 238d9ae7f2bSJakub Kicinski err = swreg_to_unrestricted(dst, dst, reg_imm(imm & 0xff), ®); 239d9ae7f2bSJakub Kicinski if (err) { 240d9ae7f2bSJakub Kicinski nfp_prog->error = err; 241d9ae7f2bSJakub Kicinski return; 242d9ae7f2bSJakub Kicinski } 243d9ae7f2bSJakub Kicinski 244d9ae7f2bSJakub Kicinski __emit_immed(nfp_prog, reg.areg, reg.breg, imm >> 8, width, 245995e101fSJakub Kicinski invert, shift, reg.wr_both, 246995e101fSJakub Kicinski reg.dst_lmextn, reg.src_lmextn); 247d9ae7f2bSJakub Kicinski } 248d9ae7f2bSJakub Kicinski 249d9ae7f2bSJakub Kicinski static void 250d9ae7f2bSJakub Kicinski __emit_shf(struct nfp_prog *nfp_prog, u16 dst, enum alu_dst_ab dst_ab, 251d9ae7f2bSJakub Kicinski enum shf_sc sc, u8 shift, 252995e101fSJakub Kicinski u16 areg, enum shf_op op, u16 breg, bool i8, bool sw, bool wr_both, 253995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 254d9ae7f2bSJakub Kicinski { 255d9ae7f2bSJakub Kicinski u64 insn; 256d9ae7f2bSJakub Kicinski 257d9ae7f2bSJakub Kicinski if (!FIELD_FIT(OP_SHF_SHIFT, shift)) { 258d9ae7f2bSJakub Kicinski nfp_prog->error = -EFAULT; 259d9ae7f2bSJakub Kicinski return; 260d9ae7f2bSJakub Kicinski } 261d9ae7f2bSJakub Kicinski 262d9ae7f2bSJakub Kicinski if (sc == SHF_SC_L_SHF) 263d9ae7f2bSJakub Kicinski shift = 32 - shift; 264d9ae7f2bSJakub Kicinski 265d9ae7f2bSJakub Kicinski insn = OP_SHF_BASE | 266d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_A_SRC, areg) | 267d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_SC, sc) | 268d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_B_SRC, breg) | 269d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_I8, i8) | 270d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_SW, sw) | 271d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_DST, dst) | 272d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_SHIFT, shift) | 273d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_OP, op) | 274d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_DST_AB, dst_ab) | 275995e101fSJakub Kicinski FIELD_PREP(OP_SHF_WR_AB, wr_both) | 276995e101fSJakub Kicinski FIELD_PREP(OP_SHF_SRC_LMEXTN, src_lmextn) | 277995e101fSJakub Kicinski FIELD_PREP(OP_SHF_DST_LMEXTN, dst_lmextn); 278d9ae7f2bSJakub Kicinski 279d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 280d9ae7f2bSJakub Kicinski } 281d9ae7f2bSJakub Kicinski 282d9ae7f2bSJakub Kicinski static void 283b3f868dfSJakub Kicinski emit_shf(struct nfp_prog *nfp_prog, swreg dst, 284b3f868dfSJakub Kicinski swreg lreg, enum shf_op op, swreg rreg, enum shf_sc sc, u8 shift) 285d9ae7f2bSJakub Kicinski { 286d9ae7f2bSJakub Kicinski struct nfp_insn_re_regs reg; 287d9ae7f2bSJakub Kicinski int err; 288d9ae7f2bSJakub Kicinski 289d9ae7f2bSJakub Kicinski err = swreg_to_restricted(dst, lreg, rreg, ®, true); 290d9ae7f2bSJakub Kicinski if (err) { 291d9ae7f2bSJakub Kicinski nfp_prog->error = err; 292d9ae7f2bSJakub Kicinski return; 293d9ae7f2bSJakub Kicinski } 294d9ae7f2bSJakub Kicinski 295d9ae7f2bSJakub Kicinski __emit_shf(nfp_prog, reg.dst, reg.dst_ab, sc, shift, 296995e101fSJakub Kicinski reg.areg, op, reg.breg, reg.i8, reg.swap, reg.wr_both, 297995e101fSJakub Kicinski reg.dst_lmextn, reg.src_lmextn); 298d9ae7f2bSJakub Kicinski } 299d9ae7f2bSJakub Kicinski 300d9ae7f2bSJakub Kicinski static void 301d9ae7f2bSJakub Kicinski __emit_alu(struct nfp_prog *nfp_prog, u16 dst, enum alu_dst_ab dst_ab, 302995e101fSJakub Kicinski u16 areg, enum alu_op op, u16 breg, bool swap, bool wr_both, 303995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 304d9ae7f2bSJakub Kicinski { 305d9ae7f2bSJakub Kicinski u64 insn; 306d9ae7f2bSJakub Kicinski 307d9ae7f2bSJakub Kicinski insn = OP_ALU_BASE | 308d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_A_SRC, areg) | 309d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_B_SRC, breg) | 310d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_DST, dst) | 311d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_SW, swap) | 312d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_OP, op) | 313d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_DST_AB, dst_ab) | 314995e101fSJakub Kicinski FIELD_PREP(OP_ALU_WR_AB, wr_both) | 315995e101fSJakub Kicinski FIELD_PREP(OP_ALU_SRC_LMEXTN, src_lmextn) | 316995e101fSJakub Kicinski FIELD_PREP(OP_ALU_DST_LMEXTN, dst_lmextn); 317d9ae7f2bSJakub Kicinski 318d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 319d9ae7f2bSJakub Kicinski } 320d9ae7f2bSJakub Kicinski 321d9ae7f2bSJakub Kicinski static void 322b3f868dfSJakub Kicinski emit_alu(struct nfp_prog *nfp_prog, swreg dst, 323b3f868dfSJakub Kicinski swreg lreg, enum alu_op op, swreg rreg) 324d9ae7f2bSJakub Kicinski { 325d9ae7f2bSJakub Kicinski struct nfp_insn_ur_regs reg; 326d9ae7f2bSJakub Kicinski int err; 327d9ae7f2bSJakub Kicinski 328d9ae7f2bSJakub Kicinski err = swreg_to_unrestricted(dst, lreg, rreg, ®); 329d9ae7f2bSJakub Kicinski if (err) { 330d9ae7f2bSJakub Kicinski nfp_prog->error = err; 331d9ae7f2bSJakub Kicinski return; 332d9ae7f2bSJakub Kicinski } 333d9ae7f2bSJakub Kicinski 334d9ae7f2bSJakub Kicinski __emit_alu(nfp_prog, reg.dst, reg.dst_ab, 335995e101fSJakub Kicinski reg.areg, op, reg.breg, reg.swap, reg.wr_both, 336995e101fSJakub Kicinski reg.dst_lmextn, reg.src_lmextn); 337d9ae7f2bSJakub Kicinski } 338d9ae7f2bSJakub Kicinski 339d9ae7f2bSJakub Kicinski static void 340d9ae7f2bSJakub Kicinski __emit_ld_field(struct nfp_prog *nfp_prog, enum shf_sc sc, 341d9ae7f2bSJakub Kicinski u8 areg, u8 bmask, u8 breg, u8 shift, bool imm8, 342995e101fSJakub Kicinski bool zero, bool swap, bool wr_both, 343995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 344d9ae7f2bSJakub Kicinski { 345d9ae7f2bSJakub Kicinski u64 insn; 346d9ae7f2bSJakub Kicinski 347d9ae7f2bSJakub Kicinski insn = OP_LDF_BASE | 348d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_A_SRC, areg) | 349d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_SC, sc) | 350d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_B_SRC, breg) | 351d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_I8, imm8) | 352d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_SW, swap) | 353d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_ZF, zero) | 354d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_BMASK, bmask) | 355d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_SHF, shift) | 356995e101fSJakub Kicinski FIELD_PREP(OP_LDF_WR_AB, wr_both) | 357995e101fSJakub Kicinski FIELD_PREP(OP_LDF_SRC_LMEXTN, src_lmextn) | 358995e101fSJakub Kicinski FIELD_PREP(OP_LDF_DST_LMEXTN, dst_lmextn); 359d9ae7f2bSJakub Kicinski 360d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 361d9ae7f2bSJakub Kicinski } 362d9ae7f2bSJakub Kicinski 363d9ae7f2bSJakub Kicinski static void 364bc8c80a8SJakub Kicinski emit_ld_field_any(struct nfp_prog *nfp_prog, swreg dst, u8 bmask, swreg src, 365bc8c80a8SJakub Kicinski enum shf_sc sc, u8 shift, bool zero) 366d9ae7f2bSJakub Kicinski { 367d9ae7f2bSJakub Kicinski struct nfp_insn_re_regs reg; 368d9ae7f2bSJakub Kicinski int err; 369d9ae7f2bSJakub Kicinski 3702de1be1dSJakub Kicinski /* Note: ld_field is special as it uses one of the src regs as dst */ 3712de1be1dSJakub Kicinski err = swreg_to_restricted(dst, dst, src, ®, true); 372d9ae7f2bSJakub Kicinski if (err) { 373d9ae7f2bSJakub Kicinski nfp_prog->error = err; 374d9ae7f2bSJakub Kicinski return; 375d9ae7f2bSJakub Kicinski } 376d9ae7f2bSJakub Kicinski 377d9ae7f2bSJakub Kicinski __emit_ld_field(nfp_prog, sc, reg.areg, bmask, reg.breg, shift, 378995e101fSJakub Kicinski reg.i8, zero, reg.swap, reg.wr_both, 379995e101fSJakub Kicinski reg.dst_lmextn, reg.src_lmextn); 380d9ae7f2bSJakub Kicinski } 381d9ae7f2bSJakub Kicinski 382d9ae7f2bSJakub Kicinski static void 383b3f868dfSJakub Kicinski emit_ld_field(struct nfp_prog *nfp_prog, swreg dst, u8 bmask, swreg src, 384d9ae7f2bSJakub Kicinski enum shf_sc sc, u8 shift) 385d9ae7f2bSJakub Kicinski { 386bc8c80a8SJakub Kicinski emit_ld_field_any(nfp_prog, dst, bmask, src, sc, shift, false); 387d9ae7f2bSJakub Kicinski } 388d9ae7f2bSJakub Kicinski 3892df03a50SJakub Kicinski static void 3902df03a50SJakub Kicinski __emit_lcsr(struct nfp_prog *nfp_prog, u16 areg, u16 breg, bool wr, u16 addr, 3912df03a50SJakub Kicinski bool dst_lmextn, bool src_lmextn) 3922df03a50SJakub Kicinski { 3932df03a50SJakub Kicinski u64 insn; 3942df03a50SJakub Kicinski 3952df03a50SJakub Kicinski insn = OP_LCSR_BASE | 3962df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_A_SRC, areg) | 3972df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_B_SRC, breg) | 3982df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_WRITE, wr) | 3992df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_ADDR, addr) | 4002df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_SRC_LMEXTN, src_lmextn) | 4012df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_DST_LMEXTN, dst_lmextn); 4022df03a50SJakub Kicinski 4032df03a50SJakub Kicinski nfp_prog_push(nfp_prog, insn); 4042df03a50SJakub Kicinski } 4052df03a50SJakub Kicinski 4062df03a50SJakub Kicinski static void emit_csr_wr(struct nfp_prog *nfp_prog, swreg src, u16 addr) 4072df03a50SJakub Kicinski { 4082df03a50SJakub Kicinski struct nfp_insn_ur_regs reg; 4092df03a50SJakub Kicinski int err; 4102df03a50SJakub Kicinski 4112df03a50SJakub Kicinski /* This instruction takes immeds instead of reg_none() for the ignored 4122df03a50SJakub Kicinski * operand, but we can't encode 2 immeds in one instr with our normal 4132df03a50SJakub Kicinski * swreg infra so if param is an immed, we encode as reg_none() and 4142df03a50SJakub Kicinski * copy the immed to both operands. 4152df03a50SJakub Kicinski */ 4162df03a50SJakub Kicinski if (swreg_type(src) == NN_REG_IMM) { 4172df03a50SJakub Kicinski err = swreg_to_unrestricted(reg_none(), src, reg_none(), ®); 4182df03a50SJakub Kicinski reg.breg = reg.areg; 4192df03a50SJakub Kicinski } else { 4202df03a50SJakub Kicinski err = swreg_to_unrestricted(reg_none(), src, reg_imm(0), ®); 4212df03a50SJakub Kicinski } 4222df03a50SJakub Kicinski if (err) { 4232df03a50SJakub Kicinski nfp_prog->error = err; 4242df03a50SJakub Kicinski return; 4252df03a50SJakub Kicinski } 4262df03a50SJakub Kicinski 4272df03a50SJakub Kicinski __emit_lcsr(nfp_prog, reg.areg, reg.breg, true, addr / 4, 4282df03a50SJakub Kicinski false, reg.src_lmextn); 4292df03a50SJakub Kicinski } 4302df03a50SJakub Kicinski 4311c03e03fSJakub Kicinski static void emit_nop(struct nfp_prog *nfp_prog) 4321c03e03fSJakub Kicinski { 4331c03e03fSJakub Kicinski __emit_immed(nfp_prog, UR_REG_IMM, UR_REG_IMM, 0, 0, 0, 0, 0, 0, 0); 4341c03e03fSJakub Kicinski } 4351c03e03fSJakub Kicinski 436d9ae7f2bSJakub Kicinski /* --- Wrappers --- */ 437d9ae7f2bSJakub Kicinski static bool pack_immed(u32 imm, u16 *val, enum immed_shift *shift) 438d9ae7f2bSJakub Kicinski { 439d9ae7f2bSJakub Kicinski if (!(imm & 0xffff0000)) { 440d9ae7f2bSJakub Kicinski *val = imm; 441d9ae7f2bSJakub Kicinski *shift = IMMED_SHIFT_0B; 442d9ae7f2bSJakub Kicinski } else if (!(imm & 0xff0000ff)) { 443d9ae7f2bSJakub Kicinski *val = imm >> 8; 444d9ae7f2bSJakub Kicinski *shift = IMMED_SHIFT_1B; 445d9ae7f2bSJakub Kicinski } else if (!(imm & 0x0000ffff)) { 446d9ae7f2bSJakub Kicinski *val = imm >> 16; 447d9ae7f2bSJakub Kicinski *shift = IMMED_SHIFT_2B; 448d9ae7f2bSJakub Kicinski } else { 449d9ae7f2bSJakub Kicinski return false; 450d9ae7f2bSJakub Kicinski } 451d9ae7f2bSJakub Kicinski 452d9ae7f2bSJakub Kicinski return true; 453d9ae7f2bSJakub Kicinski } 454d9ae7f2bSJakub Kicinski 455b3f868dfSJakub Kicinski static void wrp_immed(struct nfp_prog *nfp_prog, swreg dst, u32 imm) 456d9ae7f2bSJakub Kicinski { 457d9ae7f2bSJakub Kicinski enum immed_shift shift; 458d9ae7f2bSJakub Kicinski u16 val; 459d9ae7f2bSJakub Kicinski 460d9ae7f2bSJakub Kicinski if (pack_immed(imm, &val, &shift)) { 461d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, val, IMMED_WIDTH_ALL, false, shift); 462d9ae7f2bSJakub Kicinski } else if (pack_immed(~imm, &val, &shift)) { 463d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, val, IMMED_WIDTH_ALL, true, shift); 464d9ae7f2bSJakub Kicinski } else { 465d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, imm & 0xffff, IMMED_WIDTH_ALL, 466d9ae7f2bSJakub Kicinski false, IMMED_SHIFT_0B); 467d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, imm >> 16, IMMED_WIDTH_WORD, 468d9ae7f2bSJakub Kicinski false, IMMED_SHIFT_2B); 469d9ae7f2bSJakub Kicinski } 470d9ae7f2bSJakub Kicinski } 471d9ae7f2bSJakub Kicinski 472d9ae7f2bSJakub Kicinski /* ur_load_imm_any() - encode immediate or use tmp register (unrestricted) 473d9ae7f2bSJakub Kicinski * If the @imm is small enough encode it directly in operand and return 474d9ae7f2bSJakub Kicinski * otherwise load @imm to a spare register and return its encoding. 475d9ae7f2bSJakub Kicinski */ 476b3f868dfSJakub Kicinski static swreg ur_load_imm_any(struct nfp_prog *nfp_prog, u32 imm, swreg tmp_reg) 477d9ae7f2bSJakub Kicinski { 478d9ae7f2bSJakub Kicinski if (FIELD_FIT(UR_REG_IMM_MAX, imm)) 479d9ae7f2bSJakub Kicinski return reg_imm(imm); 480d9ae7f2bSJakub Kicinski 481d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, tmp_reg, imm); 482d9ae7f2bSJakub Kicinski return tmp_reg; 483d9ae7f2bSJakub Kicinski } 484d9ae7f2bSJakub Kicinski 485d9ae7f2bSJakub Kicinski /* re_load_imm_any() - encode immediate or use tmp register (restricted) 486d9ae7f2bSJakub Kicinski * If the @imm is small enough encode it directly in operand and return 487d9ae7f2bSJakub Kicinski * otherwise load @imm to a spare register and return its encoding. 488d9ae7f2bSJakub Kicinski */ 489b3f868dfSJakub Kicinski static swreg re_load_imm_any(struct nfp_prog *nfp_prog, u32 imm, swreg tmp_reg) 490d9ae7f2bSJakub Kicinski { 491d9ae7f2bSJakub Kicinski if (FIELD_FIT(RE_REG_IMM_MAX, imm)) 492d9ae7f2bSJakub Kicinski return reg_imm(imm); 493d9ae7f2bSJakub Kicinski 494d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, tmp_reg, imm); 495d9ae7f2bSJakub Kicinski return tmp_reg; 496d9ae7f2bSJakub Kicinski } 497d9ae7f2bSJakub Kicinski 498ff42bb9fSJakub Kicinski static void wrp_nops(struct nfp_prog *nfp_prog, unsigned int count) 499ff42bb9fSJakub Kicinski { 500ff42bb9fSJakub Kicinski while (count--) 501ff42bb9fSJakub Kicinski emit_nop(nfp_prog); 502ff42bb9fSJakub Kicinski } 503ff42bb9fSJakub Kicinski 504d9ae7f2bSJakub Kicinski static void 505d9ae7f2bSJakub Kicinski wrp_br_special(struct nfp_prog *nfp_prog, enum br_mask mask, 506d9ae7f2bSJakub Kicinski enum br_special special) 507d9ae7f2bSJakub Kicinski { 508d9ae7f2bSJakub Kicinski emit_br(nfp_prog, mask, 0, 0); 509d9ae7f2bSJakub Kicinski 510d9ae7f2bSJakub Kicinski nfp_prog->prog[nfp_prog->prog_len - 1] |= 511d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_SPECIAL, special); 512d9ae7f2bSJakub Kicinski } 513d9ae7f2bSJakub Kicinski 514c000dfb5SJakub Kicinski static void wrp_mov(struct nfp_prog *nfp_prog, swreg dst, swreg src) 515c000dfb5SJakub Kicinski { 516c000dfb5SJakub Kicinski emit_alu(nfp_prog, dst, reg_none(), ALU_OP_NONE, src); 517c000dfb5SJakub Kicinski } 518c000dfb5SJakub Kicinski 519d9ae7f2bSJakub Kicinski static void wrp_reg_mov(struct nfp_prog *nfp_prog, u16 dst, u16 src) 520d9ae7f2bSJakub Kicinski { 521c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_both(dst), reg_b(src)); 522d9ae7f2bSJakub Kicinski } 523d9ae7f2bSJakub Kicinski 524d9ae7f2bSJakub Kicinski static int 5250a793977SJakub Kicinski data_ld(struct nfp_prog *nfp_prog, swreg offset, u8 dst_gpr, int size) 526d9ae7f2bSJakub Kicinski { 527d9ae7f2bSJakub Kicinski unsigned int i; 528d9ae7f2bSJakub Kicinski u16 shift, sz; 529d9ae7f2bSJakub Kicinski 530d9ae7f2bSJakub Kicinski /* We load the value from the address indicated in @offset and then 531d9ae7f2bSJakub Kicinski * shift out the data we don't need. Note: this is big endian! 532d9ae7f2bSJakub Kicinski */ 5330a793977SJakub Kicinski sz = max(size, 4); 534d9ae7f2bSJakub Kicinski shift = size < 4 ? 4 - size : 0; 535d9ae7f2bSJakub Kicinski 5360a793977SJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_READ8, CMD_MODE_32b, 0, 5370a793977SJakub Kicinski pptr_reg(nfp_prog), offset, sz - 1, true); 5380a793977SJakub Kicinski 5390a793977SJakub Kicinski i = 0; 5400a793977SJakub Kicinski if (shift) 5410a793977SJakub Kicinski emit_shf(nfp_prog, reg_both(dst_gpr), reg_none(), SHF_OP_NONE, 5420a793977SJakub Kicinski reg_xfer(0), SHF_SC_R_SHF, shift * 8); 5430a793977SJakub Kicinski else 5440a793977SJakub Kicinski for (; i * 4 < size; i++) 5450a793977SJakub Kicinski wrp_mov(nfp_prog, reg_both(dst_gpr + i), reg_xfer(i)); 5460a793977SJakub Kicinski 5470a793977SJakub Kicinski if (i < 2) 5480a793977SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst_gpr + 1), 0); 5490a793977SJakub Kicinski 5500a793977SJakub Kicinski return 0; 5510a793977SJakub Kicinski } 5520a793977SJakub Kicinski 5530a793977SJakub Kicinski static int 5542ca71441SJakub Kicinski data_ld_host_order(struct nfp_prog *nfp_prog, u8 src_gpr, swreg offset, 5552ca71441SJakub Kicinski u8 dst_gpr, int size) 5562ca71441SJakub Kicinski { 5572ca71441SJakub Kicinski unsigned int i; 5582ca71441SJakub Kicinski u8 mask, sz; 5592ca71441SJakub Kicinski 5602ca71441SJakub Kicinski /* We load the value from the address indicated in @offset and then 5612ca71441SJakub Kicinski * mask out the data we don't need. Note: this is little endian! 5622ca71441SJakub Kicinski */ 5632ca71441SJakub Kicinski sz = max(size, 4); 5642ca71441SJakub Kicinski mask = size < 4 ? GENMASK(size - 1, 0) : 0; 5652ca71441SJakub Kicinski 5662ca71441SJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_READ32_SWAP, CMD_MODE_32b, 0, 5672ca71441SJakub Kicinski reg_a(src_gpr), offset, sz / 4 - 1, true); 5682ca71441SJakub Kicinski 5692ca71441SJakub Kicinski i = 0; 5702ca71441SJakub Kicinski if (mask) 5712ca71441SJakub Kicinski emit_ld_field_any(nfp_prog, reg_both(dst_gpr), mask, 5722ca71441SJakub Kicinski reg_xfer(0), SHF_SC_NONE, 0, true); 5732ca71441SJakub Kicinski else 5742ca71441SJakub Kicinski for (; i * 4 < size; i++) 5752ca71441SJakub Kicinski wrp_mov(nfp_prog, reg_both(dst_gpr + i), reg_xfer(i)); 5762ca71441SJakub Kicinski 5772ca71441SJakub Kicinski if (i < 2) 5782ca71441SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst_gpr + 1), 0); 5792ca71441SJakub Kicinski 5802ca71441SJakub Kicinski return 0; 5812ca71441SJakub Kicinski } 5822ca71441SJakub Kicinski 5832ca71441SJakub Kicinski static int 5840a793977SJakub Kicinski construct_data_ind_ld(struct nfp_prog *nfp_prog, u16 offset, u16 src, u8 size) 5850a793977SJakub Kicinski { 5860a793977SJakub Kicinski swreg tmp_reg; 5870a793977SJakub Kicinski 588d9ae7f2bSJakub Kicinski /* Calculate the true offset (src_reg + imm) */ 589d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, offset, imm_b(nfp_prog)); 5900a793977SJakub Kicinski emit_alu(nfp_prog, imm_both(nfp_prog), reg_a(src), ALU_OP_ADD, tmp_reg); 5910a793977SJakub Kicinski 592d9ae7f2bSJakub Kicinski /* Check packet length (size guaranteed to fit b/c it's u8) */ 593d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_a(nfp_prog), 594d9ae7f2bSJakub Kicinski imm_a(nfp_prog), ALU_OP_ADD, reg_imm(size)); 595d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 59618e53b6cSJakub Kicinski plen_reg(nfp_prog), ALU_OP_SUB, imm_a(nfp_prog)); 597d9ae7f2bSJakub Kicinski wrp_br_special(nfp_prog, BR_BLO, OP_BR_GO_ABORT); 5980a793977SJakub Kicinski 599d9ae7f2bSJakub Kicinski /* Load data */ 6000a793977SJakub Kicinski return data_ld(nfp_prog, imm_b(nfp_prog), 0, size); 601d9ae7f2bSJakub Kicinski } 602d9ae7f2bSJakub Kicinski 603d9ae7f2bSJakub Kicinski static int construct_data_ld(struct nfp_prog *nfp_prog, u16 offset, u8 size) 604d9ae7f2bSJakub Kicinski { 6050a793977SJakub Kicinski swreg tmp_reg; 6060a793977SJakub Kicinski 6070a793977SJakub Kicinski /* Check packet length */ 6080a793977SJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, offset + size, imm_a(nfp_prog)); 6090a793977SJakub Kicinski emit_alu(nfp_prog, reg_none(), plen_reg(nfp_prog), ALU_OP_SUB, tmp_reg); 6100a793977SJakub Kicinski wrp_br_special(nfp_prog, BR_BLO, OP_BR_GO_ABORT); 6110a793977SJakub Kicinski 6120a793977SJakub Kicinski /* Load data */ 6130a793977SJakub Kicinski tmp_reg = re_load_imm_any(nfp_prog, offset, imm_b(nfp_prog)); 6140a793977SJakub Kicinski return data_ld(nfp_prog, tmp_reg, 0, size); 615d9ae7f2bSJakub Kicinski } 616d9ae7f2bSJakub Kicinski 617e663fe38SJakub Kicinski static int 618e663fe38SJakub Kicinski data_stx_host_order(struct nfp_prog *nfp_prog, u8 dst_gpr, swreg offset, 619e663fe38SJakub Kicinski u8 src_gpr, u8 size) 620e663fe38SJakub Kicinski { 621e663fe38SJakub Kicinski unsigned int i; 622e663fe38SJakub Kicinski 623e663fe38SJakub Kicinski for (i = 0; i * 4 < size; i++) 624e663fe38SJakub Kicinski wrp_mov(nfp_prog, reg_xfer(i), reg_a(src_gpr + i)); 625e663fe38SJakub Kicinski 626e663fe38SJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_WRITE8_SWAP, CMD_MODE_32b, 0, 627e663fe38SJakub Kicinski reg_a(dst_gpr), offset, size - 1, true); 628e663fe38SJakub Kicinski 629e663fe38SJakub Kicinski return 0; 630e663fe38SJakub Kicinski } 631e663fe38SJakub Kicinski 632e663fe38SJakub Kicinski static int 633e663fe38SJakub Kicinski data_st_host_order(struct nfp_prog *nfp_prog, u8 dst_gpr, swreg offset, 634e663fe38SJakub Kicinski u64 imm, u8 size) 635e663fe38SJakub Kicinski { 636e663fe38SJakub Kicinski wrp_immed(nfp_prog, reg_xfer(0), imm); 637e663fe38SJakub Kicinski if (size == 8) 638e663fe38SJakub Kicinski wrp_immed(nfp_prog, reg_xfer(1), imm >> 32); 639e663fe38SJakub Kicinski 640e663fe38SJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_WRITE8_SWAP, CMD_MODE_32b, 0, 641e663fe38SJakub Kicinski reg_a(dst_gpr), offset, size - 1, true); 642e663fe38SJakub Kicinski 643e663fe38SJakub Kicinski return 0; 644e663fe38SJakub Kicinski } 645e663fe38SJakub Kicinski 646ee9133a8SJakub Kicinski typedef int 647ee9133a8SJakub Kicinski (*lmem_step)(struct nfp_prog *nfp_prog, u8 gpr, u8 gpr_byte, s32 off, 6482df03a50SJakub Kicinski unsigned int size, bool first, bool new_gpr, bool last, bool lm3, 6492df03a50SJakub Kicinski bool needs_inc); 650a82b23fbSJakub Kicinski 651a82b23fbSJakub Kicinski static int 652a82b23fbSJakub Kicinski wrp_lmem_load(struct nfp_prog *nfp_prog, u8 dst, u8 dst_byte, s32 off, 6532df03a50SJakub Kicinski unsigned int size, bool first, bool new_gpr, bool last, bool lm3, 6542df03a50SJakub Kicinski bool needs_inc) 655a82b23fbSJakub Kicinski { 6562df03a50SJakub Kicinski bool should_inc = needs_inc && new_gpr && !last; 657a82b23fbSJakub Kicinski u32 idx, src_byte; 658a82b23fbSJakub Kicinski enum shf_sc sc; 659a82b23fbSJakub Kicinski swreg reg; 660a82b23fbSJakub Kicinski int shf; 661a82b23fbSJakub Kicinski u8 mask; 662a82b23fbSJakub Kicinski 663a82b23fbSJakub Kicinski if (WARN_ON_ONCE(dst_byte + size > 4 || off % 4 + size > 4)) 664a82b23fbSJakub Kicinski return -EOPNOTSUPP; 665a82b23fbSJakub Kicinski 666a82b23fbSJakub Kicinski idx = off / 4; 667a82b23fbSJakub Kicinski 668a82b23fbSJakub Kicinski /* Move the entire word */ 669a82b23fbSJakub Kicinski if (size == 4) { 6702df03a50SJakub Kicinski wrp_mov(nfp_prog, reg_both(dst), 6712df03a50SJakub Kicinski should_inc ? reg_lm_inc(3) : reg_lm(lm3 ? 3 : 0, idx)); 672a82b23fbSJakub Kicinski return 0; 673a82b23fbSJakub Kicinski } 674a82b23fbSJakub Kicinski 6752df03a50SJakub Kicinski if (WARN_ON_ONCE(lm3 && idx > RE_REG_LM_IDX_MAX)) 6762df03a50SJakub Kicinski return -EOPNOTSUPP; 6772df03a50SJakub Kicinski 678a82b23fbSJakub Kicinski src_byte = off % 4; 679a82b23fbSJakub Kicinski 680a82b23fbSJakub Kicinski mask = (1 << size) - 1; 681a82b23fbSJakub Kicinski mask <<= dst_byte; 682a82b23fbSJakub Kicinski 683a82b23fbSJakub Kicinski if (WARN_ON_ONCE(mask > 0xf)) 684a82b23fbSJakub Kicinski return -EOPNOTSUPP; 685a82b23fbSJakub Kicinski 686a82b23fbSJakub Kicinski shf = abs(src_byte - dst_byte) * 8; 687a82b23fbSJakub Kicinski if (src_byte == dst_byte) { 688a82b23fbSJakub Kicinski sc = SHF_SC_NONE; 689a82b23fbSJakub Kicinski } else if (src_byte < dst_byte) { 690a82b23fbSJakub Kicinski shf = 32 - shf; 691a82b23fbSJakub Kicinski sc = SHF_SC_L_SHF; 692a82b23fbSJakub Kicinski } else { 693a82b23fbSJakub Kicinski sc = SHF_SC_R_SHF; 694a82b23fbSJakub Kicinski } 695a82b23fbSJakub Kicinski 696a82b23fbSJakub Kicinski /* ld_field can address fewer indexes, if offset too large do RMW. 697a82b23fbSJakub Kicinski * Because we RMV twice we waste 2 cycles on unaligned 8 byte writes. 698a82b23fbSJakub Kicinski */ 699a82b23fbSJakub Kicinski if (idx <= RE_REG_LM_IDX_MAX) { 7002df03a50SJakub Kicinski reg = reg_lm(lm3 ? 3 : 0, idx); 701a82b23fbSJakub Kicinski } else { 702a82b23fbSJakub Kicinski reg = imm_a(nfp_prog); 7039a90c83cSJakub Kicinski /* If it's not the first part of the load and we start a new GPR 7049a90c83cSJakub Kicinski * that means we are loading a second part of the LMEM word into 7059a90c83cSJakub Kicinski * a new GPR. IOW we've already looked that LMEM word and 7069a90c83cSJakub Kicinski * therefore it has been loaded into imm_a(). 7079a90c83cSJakub Kicinski */ 7089a90c83cSJakub Kicinski if (first || !new_gpr) 709a82b23fbSJakub Kicinski wrp_mov(nfp_prog, reg, reg_lm(0, idx)); 710a82b23fbSJakub Kicinski } 711a82b23fbSJakub Kicinski 712a82b23fbSJakub Kicinski emit_ld_field_any(nfp_prog, reg_both(dst), mask, reg, sc, shf, new_gpr); 713a82b23fbSJakub Kicinski 7142df03a50SJakub Kicinski if (should_inc) 7152df03a50SJakub Kicinski wrp_mov(nfp_prog, reg_none(), reg_lm_inc(3)); 7162df03a50SJakub Kicinski 717a82b23fbSJakub Kicinski return 0; 718a82b23fbSJakub Kicinski } 719ee9133a8SJakub Kicinski 720ee9133a8SJakub Kicinski static int 721ee9133a8SJakub Kicinski wrp_lmem_store(struct nfp_prog *nfp_prog, u8 src, u8 src_byte, s32 off, 7222df03a50SJakub Kicinski unsigned int size, bool first, bool new_gpr, bool last, bool lm3, 7232df03a50SJakub Kicinski bool needs_inc) 724ee9133a8SJakub Kicinski { 7252df03a50SJakub Kicinski bool should_inc = needs_inc && new_gpr && !last; 726ee9133a8SJakub Kicinski u32 idx, dst_byte; 727ee9133a8SJakub Kicinski enum shf_sc sc; 728ee9133a8SJakub Kicinski swreg reg; 729ee9133a8SJakub Kicinski int shf; 730ee9133a8SJakub Kicinski u8 mask; 731ee9133a8SJakub Kicinski 732ee9133a8SJakub Kicinski if (WARN_ON_ONCE(src_byte + size > 4 || off % 4 + size > 4)) 733ee9133a8SJakub Kicinski return -EOPNOTSUPP; 734ee9133a8SJakub Kicinski 735ee9133a8SJakub Kicinski idx = off / 4; 736ee9133a8SJakub Kicinski 737ee9133a8SJakub Kicinski /* Move the entire word */ 738ee9133a8SJakub Kicinski if (size == 4) { 7392df03a50SJakub Kicinski wrp_mov(nfp_prog, 7402df03a50SJakub Kicinski should_inc ? reg_lm_inc(3) : reg_lm(lm3 ? 3 : 0, idx), 7412df03a50SJakub Kicinski reg_b(src)); 742ee9133a8SJakub Kicinski return 0; 743ee9133a8SJakub Kicinski } 744ee9133a8SJakub Kicinski 7452df03a50SJakub Kicinski if (WARN_ON_ONCE(lm3 && idx > RE_REG_LM_IDX_MAX)) 7462df03a50SJakub Kicinski return -EOPNOTSUPP; 7472df03a50SJakub Kicinski 748ee9133a8SJakub Kicinski dst_byte = off % 4; 749ee9133a8SJakub Kicinski 750ee9133a8SJakub Kicinski mask = (1 << size) - 1; 751ee9133a8SJakub Kicinski mask <<= dst_byte; 752ee9133a8SJakub Kicinski 753ee9133a8SJakub Kicinski if (WARN_ON_ONCE(mask > 0xf)) 754ee9133a8SJakub Kicinski return -EOPNOTSUPP; 755ee9133a8SJakub Kicinski 756ee9133a8SJakub Kicinski shf = abs(src_byte - dst_byte) * 8; 757ee9133a8SJakub Kicinski if (src_byte == dst_byte) { 758ee9133a8SJakub Kicinski sc = SHF_SC_NONE; 759ee9133a8SJakub Kicinski } else if (src_byte < dst_byte) { 760ee9133a8SJakub Kicinski shf = 32 - shf; 761ee9133a8SJakub Kicinski sc = SHF_SC_L_SHF; 762ee9133a8SJakub Kicinski } else { 763ee9133a8SJakub Kicinski sc = SHF_SC_R_SHF; 764ee9133a8SJakub Kicinski } 765ee9133a8SJakub Kicinski 766ee9133a8SJakub Kicinski /* ld_field can address fewer indexes, if offset too large do RMW. 767ee9133a8SJakub Kicinski * Because we RMV twice we waste 2 cycles on unaligned 8 byte writes. 768ee9133a8SJakub Kicinski */ 769ee9133a8SJakub Kicinski if (idx <= RE_REG_LM_IDX_MAX) { 7702df03a50SJakub Kicinski reg = reg_lm(lm3 ? 3 : 0, idx); 771ee9133a8SJakub Kicinski } else { 772ee9133a8SJakub Kicinski reg = imm_a(nfp_prog); 7739a90c83cSJakub Kicinski /* Only first and last LMEM locations are going to need RMW, 7749a90c83cSJakub Kicinski * the middle location will be overwritten fully. 7759a90c83cSJakub Kicinski */ 7769a90c83cSJakub Kicinski if (first || last) 777ee9133a8SJakub Kicinski wrp_mov(nfp_prog, reg, reg_lm(0, idx)); 778ee9133a8SJakub Kicinski } 779ee9133a8SJakub Kicinski 780ee9133a8SJakub Kicinski emit_ld_field(nfp_prog, reg, mask, reg_b(src), sc, shf); 781ee9133a8SJakub Kicinski 7829a90c83cSJakub Kicinski if (new_gpr || last) { 783ee9133a8SJakub Kicinski if (idx > RE_REG_LM_IDX_MAX) 784ee9133a8SJakub Kicinski wrp_mov(nfp_prog, reg_lm(0, idx), reg); 7852df03a50SJakub Kicinski if (should_inc) 7862df03a50SJakub Kicinski wrp_mov(nfp_prog, reg_none(), reg_lm_inc(3)); 7879a90c83cSJakub Kicinski } 788ee9133a8SJakub Kicinski 789ee9133a8SJakub Kicinski return 0; 790ee9133a8SJakub Kicinski } 791ee9133a8SJakub Kicinski 792ee9133a8SJakub Kicinski static int 793ee9133a8SJakub Kicinski mem_op_stack(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 794b14157eeSJakub Kicinski unsigned int size, unsigned int ptr_off, u8 gpr, u8 ptr_gpr, 795b14157eeSJakub Kicinski bool clr_gpr, lmem_step step) 796ee9133a8SJakub Kicinski { 797d3488480SJakub Kicinski s32 off = nfp_prog->stack_depth + meta->insn.off + ptr_off; 7989a90c83cSJakub Kicinski bool first = true, last; 7992df03a50SJakub Kicinski bool needs_inc = false; 8002df03a50SJakub Kicinski swreg stack_off_reg; 801a82b23fbSJakub Kicinski u8 prev_gpr = 255; 802ee9133a8SJakub Kicinski u32 gpr_byte = 0; 8032df03a50SJakub Kicinski bool lm3 = true; 804ee9133a8SJakub Kicinski int ret; 805ee9133a8SJakub Kicinski 806b14157eeSJakub Kicinski if (meta->ptr_not_const) { 807b14157eeSJakub Kicinski /* Use of the last encountered ptr_off is OK, they all have 808b14157eeSJakub Kicinski * the same alignment. Depend on low bits of value being 809b14157eeSJakub Kicinski * discarded when written to LMaddr register. 810b14157eeSJakub Kicinski */ 811b14157eeSJakub Kicinski stack_off_reg = ur_load_imm_any(nfp_prog, meta->insn.off, 812b14157eeSJakub Kicinski stack_imm(nfp_prog)); 813b14157eeSJakub Kicinski 814b14157eeSJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), 815b14157eeSJakub Kicinski reg_a(ptr_gpr), ALU_OP_ADD, stack_off_reg); 816b14157eeSJakub Kicinski 817b14157eeSJakub Kicinski needs_inc = true; 818b14157eeSJakub Kicinski } else if (off + size <= 64) { 8192df03a50SJakub Kicinski /* We can reach bottom 64B with LMaddr0 */ 8202df03a50SJakub Kicinski lm3 = false; 8212df03a50SJakub Kicinski } else if (round_down(off, 32) == round_down(off + size - 1, 32)) { 8222df03a50SJakub Kicinski /* We have to set up a new pointer. If we know the offset 8232df03a50SJakub Kicinski * and the entire access falls into a single 32 byte aligned 8242df03a50SJakub Kicinski * window we won't have to increment the LM pointer. 8252df03a50SJakub Kicinski * The 32 byte alignment is imporant because offset is ORed in 8262df03a50SJakub Kicinski * not added when doing *l$indexN[off]. 8272df03a50SJakub Kicinski */ 8282df03a50SJakub Kicinski stack_off_reg = ur_load_imm_any(nfp_prog, round_down(off, 32), 8292df03a50SJakub Kicinski stack_imm(nfp_prog)); 8302df03a50SJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), 8312df03a50SJakub Kicinski stack_reg(nfp_prog), ALU_OP_ADD, stack_off_reg); 8322df03a50SJakub Kicinski 8332df03a50SJakub Kicinski off %= 32; 8342df03a50SJakub Kicinski } else { 8352df03a50SJakub Kicinski stack_off_reg = ur_load_imm_any(nfp_prog, round_down(off, 4), 8362df03a50SJakub Kicinski stack_imm(nfp_prog)); 8372df03a50SJakub Kicinski 8382df03a50SJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), 8392df03a50SJakub Kicinski stack_reg(nfp_prog), ALU_OP_ADD, stack_off_reg); 8402df03a50SJakub Kicinski 8412df03a50SJakub Kicinski needs_inc = true; 8422df03a50SJakub Kicinski } 8432df03a50SJakub Kicinski if (lm3) { 8442df03a50SJakub Kicinski emit_csr_wr(nfp_prog, imm_b(nfp_prog), NFP_CSR_ACT_LM_ADDR3); 8452df03a50SJakub Kicinski /* For size < 4 one slot will be filled by zeroing of upper. */ 8462df03a50SJakub Kicinski wrp_nops(nfp_prog, clr_gpr && size < 8 ? 2 : 3); 8472df03a50SJakub Kicinski } 8482df03a50SJakub Kicinski 849a82b23fbSJakub Kicinski if (clr_gpr && size < 8) 850a82b23fbSJakub Kicinski wrp_immed(nfp_prog, reg_both(gpr + 1), 0); 851a82b23fbSJakub Kicinski 852ee9133a8SJakub Kicinski while (size) { 853ee9133a8SJakub Kicinski u32 slice_end; 854ee9133a8SJakub Kicinski u8 slice_size; 855ee9133a8SJakub Kicinski 856ee9133a8SJakub Kicinski slice_size = min(size, 4 - gpr_byte); 857ee9133a8SJakub Kicinski slice_end = min(off + slice_size, round_up(off + 1, 4)); 858ee9133a8SJakub Kicinski slice_size = slice_end - off; 859ee9133a8SJakub Kicinski 8609a90c83cSJakub Kicinski last = slice_size == size; 8619a90c83cSJakub Kicinski 8622df03a50SJakub Kicinski if (needs_inc) 8632df03a50SJakub Kicinski off %= 4; 8642df03a50SJakub Kicinski 865a82b23fbSJakub Kicinski ret = step(nfp_prog, gpr, gpr_byte, off, slice_size, 8662df03a50SJakub Kicinski first, gpr != prev_gpr, last, lm3, needs_inc); 867ee9133a8SJakub Kicinski if (ret) 868ee9133a8SJakub Kicinski return ret; 869ee9133a8SJakub Kicinski 870a82b23fbSJakub Kicinski prev_gpr = gpr; 8719a90c83cSJakub Kicinski first = false; 8729a90c83cSJakub Kicinski 873ee9133a8SJakub Kicinski gpr_byte += slice_size; 874ee9133a8SJakub Kicinski if (gpr_byte >= 4) { 875ee9133a8SJakub Kicinski gpr_byte -= 4; 876ee9133a8SJakub Kicinski gpr++; 877ee9133a8SJakub Kicinski } 878ee9133a8SJakub Kicinski 879ee9133a8SJakub Kicinski size -= slice_size; 880ee9133a8SJakub Kicinski off += slice_size; 881ee9133a8SJakub Kicinski } 882ee9133a8SJakub Kicinski 883ee9133a8SJakub Kicinski return 0; 884ee9133a8SJakub Kicinski } 885ee9133a8SJakub Kicinski 886d9ae7f2bSJakub Kicinski static void 887d9ae7f2bSJakub Kicinski wrp_alu_imm(struct nfp_prog *nfp_prog, u8 dst, enum alu_op alu_op, u32 imm) 888d9ae7f2bSJakub Kicinski { 889b3f868dfSJakub Kicinski swreg tmp_reg; 890d9ae7f2bSJakub Kicinski 891d9ae7f2bSJakub Kicinski if (alu_op == ALU_OP_AND) { 892d9ae7f2bSJakub Kicinski if (!imm) 893d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), 0); 894d9ae7f2bSJakub Kicinski if (!imm || !~imm) 895d9ae7f2bSJakub Kicinski return; 896d9ae7f2bSJakub Kicinski } 897d9ae7f2bSJakub Kicinski if (alu_op == ALU_OP_OR) { 898d9ae7f2bSJakub Kicinski if (!~imm) 899d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), ~0U); 900d9ae7f2bSJakub Kicinski if (!imm || !~imm) 901d9ae7f2bSJakub Kicinski return; 902d9ae7f2bSJakub Kicinski } 903d9ae7f2bSJakub Kicinski if (alu_op == ALU_OP_XOR) { 904d9ae7f2bSJakub Kicinski if (!~imm) 905d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_none(), 9065d42ced1SJiong Wang ALU_OP_NOT, reg_b(dst)); 907d9ae7f2bSJakub Kicinski if (!imm || !~imm) 908d9ae7f2bSJakub Kicinski return; 909d9ae7f2bSJakub Kicinski } 910d9ae7f2bSJakub Kicinski 911d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm, imm_b(nfp_prog)); 912d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_a(dst), alu_op, tmp_reg); 913d9ae7f2bSJakub Kicinski } 914d9ae7f2bSJakub Kicinski 915d9ae7f2bSJakub Kicinski static int 916d9ae7f2bSJakub Kicinski wrp_alu64_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 917d9ae7f2bSJakub Kicinski enum alu_op alu_op, bool skip) 918d9ae7f2bSJakub Kicinski { 919d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 920d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 921d9ae7f2bSJakub Kicinski 922d9ae7f2bSJakub Kicinski if (skip) { 923d9ae7f2bSJakub Kicinski meta->skip = true; 924d9ae7f2bSJakub Kicinski return 0; 925d9ae7f2bSJakub Kicinski } 926d9ae7f2bSJakub Kicinski 927d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, alu_op, imm & ~0U); 928d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2 + 1, alu_op, imm >> 32); 929d9ae7f2bSJakub Kicinski 930d9ae7f2bSJakub Kicinski return 0; 931d9ae7f2bSJakub Kicinski } 932d9ae7f2bSJakub Kicinski 933d9ae7f2bSJakub Kicinski static int 934d9ae7f2bSJakub Kicinski wrp_alu64_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 935d9ae7f2bSJakub Kicinski enum alu_op alu_op) 936d9ae7f2bSJakub Kicinski { 937d9ae7f2bSJakub Kicinski u8 dst = meta->insn.dst_reg * 2, src = meta->insn.src_reg * 2; 938d9ae7f2bSJakub Kicinski 939d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_a(dst), alu_op, reg_b(src)); 940d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst + 1), 941d9ae7f2bSJakub Kicinski reg_a(dst + 1), alu_op, reg_b(src + 1)); 942d9ae7f2bSJakub Kicinski 943d9ae7f2bSJakub Kicinski return 0; 944d9ae7f2bSJakub Kicinski } 945d9ae7f2bSJakub Kicinski 946d9ae7f2bSJakub Kicinski static int 947d9ae7f2bSJakub Kicinski wrp_alu32_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 948d9ae7f2bSJakub Kicinski enum alu_op alu_op, bool skip) 949d9ae7f2bSJakub Kicinski { 950d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 951d9ae7f2bSJakub Kicinski 952d9ae7f2bSJakub Kicinski if (skip) { 953d9ae7f2bSJakub Kicinski meta->skip = true; 954d9ae7f2bSJakub Kicinski return 0; 955d9ae7f2bSJakub Kicinski } 956d9ae7f2bSJakub Kicinski 957d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, alu_op, insn->imm); 958d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 959d9ae7f2bSJakub Kicinski 960d9ae7f2bSJakub Kicinski return 0; 961d9ae7f2bSJakub Kicinski } 962d9ae7f2bSJakub Kicinski 963d9ae7f2bSJakub Kicinski static int 964d9ae7f2bSJakub Kicinski wrp_alu32_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 965d9ae7f2bSJakub Kicinski enum alu_op alu_op) 966d9ae7f2bSJakub Kicinski { 967d9ae7f2bSJakub Kicinski u8 dst = meta->insn.dst_reg * 2, src = meta->insn.src_reg * 2; 968d9ae7f2bSJakub Kicinski 969d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_a(dst), alu_op, reg_b(src)); 970d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 971d9ae7f2bSJakub Kicinski 972d9ae7f2bSJakub Kicinski return 0; 973d9ae7f2bSJakub Kicinski } 974d9ae7f2bSJakub Kicinski 975d9ae7f2bSJakub Kicinski static void 976d9ae7f2bSJakub Kicinski wrp_test_reg_one(struct nfp_prog *nfp_prog, u8 dst, enum alu_op alu_op, u8 src, 977d9ae7f2bSJakub Kicinski enum br_mask br_mask, u16 off) 978d9ae7f2bSJakub Kicinski { 979d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(dst), alu_op, reg_b(src)); 980d9ae7f2bSJakub Kicinski emit_br(nfp_prog, br_mask, off, 0); 981d9ae7f2bSJakub Kicinski } 982d9ae7f2bSJakub Kicinski 983d9ae7f2bSJakub Kicinski static int 984d9ae7f2bSJakub Kicinski wrp_test_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 985d9ae7f2bSJakub Kicinski enum alu_op alu_op, enum br_mask br_mask) 986d9ae7f2bSJakub Kicinski { 987d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 988d9ae7f2bSJakub Kicinski 989d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 990d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 991d9ae7f2bSJakub Kicinski 992d9ae7f2bSJakub Kicinski wrp_test_reg_one(nfp_prog, insn->dst_reg * 2, alu_op, 993d9ae7f2bSJakub Kicinski insn->src_reg * 2, br_mask, insn->off); 994d9ae7f2bSJakub Kicinski wrp_test_reg_one(nfp_prog, insn->dst_reg * 2 + 1, alu_op, 995d9ae7f2bSJakub Kicinski insn->src_reg * 2 + 1, br_mask, insn->off); 996d9ae7f2bSJakub Kicinski 997d9ae7f2bSJakub Kicinski return 0; 998d9ae7f2bSJakub Kicinski } 999d9ae7f2bSJakub Kicinski 1000d9ae7f2bSJakub Kicinski static int 1001d9ae7f2bSJakub Kicinski wrp_cmp_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1002d9ae7f2bSJakub Kicinski enum br_mask br_mask, bool swap) 1003d9ae7f2bSJakub Kicinski { 1004d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1005d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1006d9ae7f2bSJakub Kicinski u8 reg = insn->dst_reg * 2; 1007b3f868dfSJakub Kicinski swreg tmp_reg; 1008d9ae7f2bSJakub Kicinski 1009d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 1010d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1011d9ae7f2bSJakub Kicinski 1012d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 1013d9ae7f2bSJakub Kicinski if (!swap) 1014d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(reg), ALU_OP_SUB, tmp_reg); 1015d9ae7f2bSJakub Kicinski else 1016d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), tmp_reg, ALU_OP_SUB, reg_a(reg)); 1017d9ae7f2bSJakub Kicinski 1018d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 1019d9ae7f2bSJakub Kicinski if (!swap) 1020d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1021d9ae7f2bSJakub Kicinski reg_a(reg + 1), ALU_OP_SUB_C, tmp_reg); 1022d9ae7f2bSJakub Kicinski else 1023d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1024d9ae7f2bSJakub Kicinski tmp_reg, ALU_OP_SUB_C, reg_a(reg + 1)); 1025d9ae7f2bSJakub Kicinski 1026d9ae7f2bSJakub Kicinski emit_br(nfp_prog, br_mask, insn->off, 0); 1027d9ae7f2bSJakub Kicinski 1028d9ae7f2bSJakub Kicinski return 0; 1029d9ae7f2bSJakub Kicinski } 1030d9ae7f2bSJakub Kicinski 1031d9ae7f2bSJakub Kicinski static int 1032d9ae7f2bSJakub Kicinski wrp_cmp_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1033d9ae7f2bSJakub Kicinski enum br_mask br_mask, bool swap) 1034d9ae7f2bSJakub Kicinski { 1035d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 103626fa818dSJakub Kicinski u8 areg, breg; 103726fa818dSJakub Kicinski 103826fa818dSJakub Kicinski areg = insn->dst_reg * 2; 103926fa818dSJakub Kicinski breg = insn->src_reg * 2; 1040d9ae7f2bSJakub Kicinski 1041d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 1042d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1043d9ae7f2bSJakub Kicinski 1044d9ae7f2bSJakub Kicinski if (swap) { 1045d9ae7f2bSJakub Kicinski areg ^= breg; 1046d9ae7f2bSJakub Kicinski breg ^= areg; 1047d9ae7f2bSJakub Kicinski areg ^= breg; 1048d9ae7f2bSJakub Kicinski } 1049d9ae7f2bSJakub Kicinski 1050d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(areg), ALU_OP_SUB, reg_b(breg)); 1051d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1052d9ae7f2bSJakub Kicinski reg_a(areg + 1), ALU_OP_SUB_C, reg_b(breg + 1)); 1053d9ae7f2bSJakub Kicinski emit_br(nfp_prog, br_mask, insn->off, 0); 1054d9ae7f2bSJakub Kicinski 1055d9ae7f2bSJakub Kicinski return 0; 1056d9ae7f2bSJakub Kicinski } 1057d9ae7f2bSJakub Kicinski 10583119d1fdSJakub Kicinski static void wrp_end32(struct nfp_prog *nfp_prog, swreg reg_in, u8 gpr_out) 10593119d1fdSJakub Kicinski { 10603119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr_out), 0xf, reg_in, 10613119d1fdSJakub Kicinski SHF_SC_R_ROT, 8); 10623119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr_out), 0x5, reg_a(gpr_out), 10633119d1fdSJakub Kicinski SHF_SC_R_ROT, 16); 10643119d1fdSJakub Kicinski } 10653119d1fdSJakub Kicinski 1066d9ae7f2bSJakub Kicinski /* --- Callbacks --- */ 1067d9ae7f2bSJakub Kicinski static int mov_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1068d9ae7f2bSJakub Kicinski { 1069d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1070b14157eeSJakub Kicinski u8 dst = insn->dst_reg * 2; 1071b14157eeSJakub Kicinski u8 src = insn->src_reg * 2; 1072d9ae7f2bSJakub Kicinski 1073b14157eeSJakub Kicinski if (insn->src_reg == BPF_REG_10) { 1074b14157eeSJakub Kicinski swreg stack_depth_reg; 1075b14157eeSJakub Kicinski 1076b14157eeSJakub Kicinski stack_depth_reg = ur_load_imm_any(nfp_prog, 1077b14157eeSJakub Kicinski nfp_prog->stack_depth, 1078b14157eeSJakub Kicinski stack_imm(nfp_prog)); 1079b14157eeSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), 1080b14157eeSJakub Kicinski stack_reg(nfp_prog), ALU_OP_ADD, stack_depth_reg); 1081b14157eeSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst + 1), 0); 1082b14157eeSJakub Kicinski } else { 1083b14157eeSJakub Kicinski wrp_reg_mov(nfp_prog, dst, src); 1084b14157eeSJakub Kicinski wrp_reg_mov(nfp_prog, dst + 1, src + 1); 1085b14157eeSJakub Kicinski } 1086d9ae7f2bSJakub Kicinski 1087d9ae7f2bSJakub Kicinski return 0; 1088d9ae7f2bSJakub Kicinski } 1089d9ae7f2bSJakub Kicinski 1090d9ae7f2bSJakub Kicinski static int mov_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1091d9ae7f2bSJakub Kicinski { 1092d9ae7f2bSJakub Kicinski u64 imm = meta->insn.imm; /* sign extend */ 1093d9ae7f2bSJakub Kicinski 1094d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2), imm & ~0U); 1095d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), imm >> 32); 1096d9ae7f2bSJakub Kicinski 1097d9ae7f2bSJakub Kicinski return 0; 1098d9ae7f2bSJakub Kicinski } 1099d9ae7f2bSJakub Kicinski 1100d9ae7f2bSJakub Kicinski static int xor_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1101d9ae7f2bSJakub Kicinski { 1102d9ae7f2bSJakub Kicinski return wrp_alu64_reg(nfp_prog, meta, ALU_OP_XOR); 1103d9ae7f2bSJakub Kicinski } 1104d9ae7f2bSJakub Kicinski 1105d9ae7f2bSJakub Kicinski static int xor_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1106d9ae7f2bSJakub Kicinski { 1107d9ae7f2bSJakub Kicinski return wrp_alu64_imm(nfp_prog, meta, ALU_OP_XOR, !meta->insn.imm); 1108d9ae7f2bSJakub Kicinski } 1109d9ae7f2bSJakub Kicinski 1110d9ae7f2bSJakub Kicinski static int and_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1111d9ae7f2bSJakub Kicinski { 1112d9ae7f2bSJakub Kicinski return wrp_alu64_reg(nfp_prog, meta, ALU_OP_AND); 1113d9ae7f2bSJakub Kicinski } 1114d9ae7f2bSJakub Kicinski 1115d9ae7f2bSJakub Kicinski static int and_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1116d9ae7f2bSJakub Kicinski { 1117d9ae7f2bSJakub Kicinski return wrp_alu64_imm(nfp_prog, meta, ALU_OP_AND, !~meta->insn.imm); 1118d9ae7f2bSJakub Kicinski } 1119d9ae7f2bSJakub Kicinski 1120d9ae7f2bSJakub Kicinski static int or_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1121d9ae7f2bSJakub Kicinski { 1122d9ae7f2bSJakub Kicinski return wrp_alu64_reg(nfp_prog, meta, ALU_OP_OR); 1123d9ae7f2bSJakub Kicinski } 1124d9ae7f2bSJakub Kicinski 1125d9ae7f2bSJakub Kicinski static int or_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1126d9ae7f2bSJakub Kicinski { 1127d9ae7f2bSJakub Kicinski return wrp_alu64_imm(nfp_prog, meta, ALU_OP_OR, !meta->insn.imm); 1128d9ae7f2bSJakub Kicinski } 1129d9ae7f2bSJakub Kicinski 1130d9ae7f2bSJakub Kicinski static int add_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1131d9ae7f2bSJakub Kicinski { 1132d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1133d9ae7f2bSJakub Kicinski 1134d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2), 1135d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_ADD, 1136d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2)); 1137d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 1138d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_ADD_C, 1139d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2 + 1)); 1140d9ae7f2bSJakub Kicinski 1141d9ae7f2bSJakub Kicinski return 0; 1142d9ae7f2bSJakub Kicinski } 1143d9ae7f2bSJakub Kicinski 1144d9ae7f2bSJakub Kicinski static int add_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1145d9ae7f2bSJakub Kicinski { 1146d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1147d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1148d9ae7f2bSJakub Kicinski 1149d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, ALU_OP_ADD, imm & ~0U); 1150d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2 + 1, ALU_OP_ADD_C, imm >> 32); 1151d9ae7f2bSJakub Kicinski 1152d9ae7f2bSJakub Kicinski return 0; 1153d9ae7f2bSJakub Kicinski } 1154d9ae7f2bSJakub Kicinski 1155d9ae7f2bSJakub Kicinski static int sub_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1156d9ae7f2bSJakub Kicinski { 1157d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1158d9ae7f2bSJakub Kicinski 1159d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2), 1160d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_SUB, 1161d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2)); 1162d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 1163d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_SUB_C, 1164d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2 + 1)); 1165d9ae7f2bSJakub Kicinski 1166d9ae7f2bSJakub Kicinski return 0; 1167d9ae7f2bSJakub Kicinski } 1168d9ae7f2bSJakub Kicinski 1169d9ae7f2bSJakub Kicinski static int sub_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1170d9ae7f2bSJakub Kicinski { 1171d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1172d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1173d9ae7f2bSJakub Kicinski 1174d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, ALU_OP_SUB, imm & ~0U); 1175d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2 + 1, ALU_OP_SUB_C, imm >> 32); 1176d9ae7f2bSJakub Kicinski 1177d9ae7f2bSJakub Kicinski return 0; 1178d9ae7f2bSJakub Kicinski } 1179d9ae7f2bSJakub Kicinski 1180254ef4d7SJiong Wang static int neg_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1181254ef4d7SJiong Wang { 1182254ef4d7SJiong Wang const struct bpf_insn *insn = &meta->insn; 1183254ef4d7SJiong Wang 1184254ef4d7SJiong Wang emit_alu(nfp_prog, reg_both(insn->dst_reg * 2), reg_imm(0), 1185254ef4d7SJiong Wang ALU_OP_SUB, reg_b(insn->dst_reg * 2)); 1186254ef4d7SJiong Wang emit_alu(nfp_prog, reg_both(insn->dst_reg * 2 + 1), reg_imm(0), 1187254ef4d7SJiong Wang ALU_OP_SUB_C, reg_b(insn->dst_reg * 2 + 1)); 1188254ef4d7SJiong Wang 1189254ef4d7SJiong Wang return 0; 1190254ef4d7SJiong Wang } 1191254ef4d7SJiong Wang 1192d9ae7f2bSJakub Kicinski static int shl_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1193d9ae7f2bSJakub Kicinski { 1194d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 11953cae1319SJakub Kicinski u8 dst = insn->dst_reg * 2; 1196d9ae7f2bSJakub Kicinski 11973cae1319SJakub Kicinski if (insn->imm < 32) { 11983cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst + 1), 11993cae1319SJakub Kicinski reg_a(dst + 1), SHF_OP_NONE, reg_b(dst), 12003cae1319SJakub Kicinski SHF_SC_R_DSHF, 32 - insn->imm); 12013cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst), 12023cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst), 12033cae1319SJakub Kicinski SHF_SC_L_SHF, insn->imm); 12043cae1319SJakub Kicinski } else if (insn->imm == 32) { 12053cae1319SJakub Kicinski wrp_reg_mov(nfp_prog, dst + 1, dst); 12063cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), 0); 12073cae1319SJakub Kicinski } else if (insn->imm > 32) { 12083cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst + 1), 12093cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst), 12103cae1319SJakub Kicinski SHF_SC_L_SHF, insn->imm - 32); 12113cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), 0); 12123cae1319SJakub Kicinski } 1213d9ae7f2bSJakub Kicinski 1214d9ae7f2bSJakub Kicinski return 0; 1215d9ae7f2bSJakub Kicinski } 1216d9ae7f2bSJakub Kicinski 1217d9ae7f2bSJakub Kicinski static int shr_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1218d9ae7f2bSJakub Kicinski { 1219d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 12203cae1319SJakub Kicinski u8 dst = insn->dst_reg * 2; 1221d9ae7f2bSJakub Kicinski 12223cae1319SJakub Kicinski if (insn->imm < 32) { 12233cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst), 12243cae1319SJakub Kicinski reg_a(dst + 1), SHF_OP_NONE, reg_b(dst), 12253cae1319SJakub Kicinski SHF_SC_R_DSHF, insn->imm); 12263cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst + 1), 12273cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst + 1), 12283cae1319SJakub Kicinski SHF_SC_R_SHF, insn->imm); 12293cae1319SJakub Kicinski } else if (insn->imm == 32) { 12303cae1319SJakub Kicinski wrp_reg_mov(nfp_prog, dst, dst + 1); 12313cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst + 1), 0); 12323cae1319SJakub Kicinski } else if (insn->imm > 32) { 12333cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst), 12343cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst + 1), 12353cae1319SJakub Kicinski SHF_SC_R_SHF, insn->imm - 32); 12363cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst + 1), 0); 12373cae1319SJakub Kicinski } 1238d9ae7f2bSJakub Kicinski 1239d9ae7f2bSJakub Kicinski return 0; 1240d9ae7f2bSJakub Kicinski } 1241d9ae7f2bSJakub Kicinski 1242d9ae7f2bSJakub Kicinski static int mov_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1243d9ae7f2bSJakub Kicinski { 1244d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1245d9ae7f2bSJakub Kicinski 1246d9ae7f2bSJakub Kicinski wrp_reg_mov(nfp_prog, insn->dst_reg * 2, insn->src_reg * 2); 1247d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 1248d9ae7f2bSJakub Kicinski 1249d9ae7f2bSJakub Kicinski return 0; 1250d9ae7f2bSJakub Kicinski } 1251d9ae7f2bSJakub Kicinski 1252d9ae7f2bSJakub Kicinski static int mov_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1253d9ae7f2bSJakub Kicinski { 1254d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1255d9ae7f2bSJakub Kicinski 1256d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2), insn->imm); 1257d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 1258d9ae7f2bSJakub Kicinski 1259d9ae7f2bSJakub Kicinski return 0; 1260d9ae7f2bSJakub Kicinski } 1261d9ae7f2bSJakub Kicinski 1262d9ae7f2bSJakub Kicinski static int xor_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1263d9ae7f2bSJakub Kicinski { 1264d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_XOR); 1265d9ae7f2bSJakub Kicinski } 1266d9ae7f2bSJakub Kicinski 1267d9ae7f2bSJakub Kicinski static int xor_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1268d9ae7f2bSJakub Kicinski { 1269d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_XOR, !~meta->insn.imm); 1270d9ae7f2bSJakub Kicinski } 1271d9ae7f2bSJakub Kicinski 1272d9ae7f2bSJakub Kicinski static int and_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1273d9ae7f2bSJakub Kicinski { 1274d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_AND); 1275d9ae7f2bSJakub Kicinski } 1276d9ae7f2bSJakub Kicinski 1277d9ae7f2bSJakub Kicinski static int and_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1278d9ae7f2bSJakub Kicinski { 1279d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_AND, !~meta->insn.imm); 1280d9ae7f2bSJakub Kicinski } 1281d9ae7f2bSJakub Kicinski 1282d9ae7f2bSJakub Kicinski static int or_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1283d9ae7f2bSJakub Kicinski { 1284d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_OR); 1285d9ae7f2bSJakub Kicinski } 1286d9ae7f2bSJakub Kicinski 1287d9ae7f2bSJakub Kicinski static int or_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1288d9ae7f2bSJakub Kicinski { 1289d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_OR, !meta->insn.imm); 1290d9ae7f2bSJakub Kicinski } 1291d9ae7f2bSJakub Kicinski 1292d9ae7f2bSJakub Kicinski static int add_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1293d9ae7f2bSJakub Kicinski { 1294d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_ADD); 1295d9ae7f2bSJakub Kicinski } 1296d9ae7f2bSJakub Kicinski 1297d9ae7f2bSJakub Kicinski static int add_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1298d9ae7f2bSJakub Kicinski { 1299d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_ADD, !meta->insn.imm); 1300d9ae7f2bSJakub Kicinski } 1301d9ae7f2bSJakub Kicinski 1302d9ae7f2bSJakub Kicinski static int sub_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1303d9ae7f2bSJakub Kicinski { 1304d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_SUB); 1305d9ae7f2bSJakub Kicinski } 1306d9ae7f2bSJakub Kicinski 1307d9ae7f2bSJakub Kicinski static int sub_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1308d9ae7f2bSJakub Kicinski { 1309d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_SUB, !meta->insn.imm); 1310d9ae7f2bSJakub Kicinski } 1311d9ae7f2bSJakub Kicinski 1312254ef4d7SJiong Wang static int neg_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1313254ef4d7SJiong Wang { 1314254ef4d7SJiong Wang u8 dst = meta->insn.dst_reg * 2; 1315254ef4d7SJiong Wang 1316254ef4d7SJiong Wang emit_alu(nfp_prog, reg_both(dst), reg_imm(0), ALU_OP_SUB, reg_b(dst)); 1317254ef4d7SJiong Wang wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 1318254ef4d7SJiong Wang 1319254ef4d7SJiong Wang return 0; 1320254ef4d7SJiong Wang } 1321254ef4d7SJiong Wang 1322d9ae7f2bSJakub Kicinski static int shl_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1323d9ae7f2bSJakub Kicinski { 1324d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1325d9ae7f2bSJakub Kicinski 1326d9ae7f2bSJakub Kicinski if (!insn->imm) 1327d9ae7f2bSJakub Kicinski return 1; /* TODO: zero shift means indirect */ 1328d9ae7f2bSJakub Kicinski 1329d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_both(insn->dst_reg * 2), 1330d9ae7f2bSJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(insn->dst_reg * 2), 1331d9ae7f2bSJakub Kicinski SHF_SC_L_SHF, insn->imm); 1332d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 1333d9ae7f2bSJakub Kicinski 1334d9ae7f2bSJakub Kicinski return 0; 1335d9ae7f2bSJakub Kicinski } 1336d9ae7f2bSJakub Kicinski 13373119d1fdSJakub Kicinski static int end_reg32(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 13383119d1fdSJakub Kicinski { 13393119d1fdSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 13403119d1fdSJakub Kicinski u8 gpr = insn->dst_reg * 2; 13413119d1fdSJakub Kicinski 13423119d1fdSJakub Kicinski switch (insn->imm) { 13433119d1fdSJakub Kicinski case 16: 13443119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr), 0x9, reg_b(gpr), 13453119d1fdSJakub Kicinski SHF_SC_R_ROT, 8); 13463119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr), 0xe, reg_a(gpr), 13473119d1fdSJakub Kicinski SHF_SC_R_SHF, 16); 13483119d1fdSJakub Kicinski 13493119d1fdSJakub Kicinski wrp_immed(nfp_prog, reg_both(gpr + 1), 0); 13503119d1fdSJakub Kicinski break; 13513119d1fdSJakub Kicinski case 32: 13523119d1fdSJakub Kicinski wrp_end32(nfp_prog, reg_a(gpr), gpr); 13533119d1fdSJakub Kicinski wrp_immed(nfp_prog, reg_both(gpr + 1), 0); 13543119d1fdSJakub Kicinski break; 13553119d1fdSJakub Kicinski case 64: 13563119d1fdSJakub Kicinski wrp_mov(nfp_prog, imm_a(nfp_prog), reg_b(gpr + 1)); 13573119d1fdSJakub Kicinski 13583119d1fdSJakub Kicinski wrp_end32(nfp_prog, reg_a(gpr), gpr + 1); 13593119d1fdSJakub Kicinski wrp_end32(nfp_prog, imm_a(nfp_prog), gpr); 13603119d1fdSJakub Kicinski break; 13613119d1fdSJakub Kicinski } 13623119d1fdSJakub Kicinski 13633119d1fdSJakub Kicinski return 0; 13643119d1fdSJakub Kicinski } 13653119d1fdSJakub Kicinski 1366d9ae7f2bSJakub Kicinski static int imm_ld8_part2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1367d9ae7f2bSJakub Kicinski { 13689f16c8abSJakub Kicinski struct nfp_insn_meta *prev = nfp_meta_prev(meta); 13699f16c8abSJakub Kicinski u32 imm_lo, imm_hi; 13709f16c8abSJakub Kicinski u8 dst; 13719f16c8abSJakub Kicinski 13729f16c8abSJakub Kicinski dst = prev->insn.dst_reg * 2; 13739f16c8abSJakub Kicinski imm_lo = prev->insn.imm; 13749f16c8abSJakub Kicinski imm_hi = meta->insn.imm; 13759f16c8abSJakub Kicinski 13769f16c8abSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), imm_lo); 13779f16c8abSJakub Kicinski 13789f16c8abSJakub Kicinski /* mov is always 1 insn, load imm may be two, so try to use mov */ 13799f16c8abSJakub Kicinski if (imm_hi == imm_lo) 13809f16c8abSJakub Kicinski wrp_mov(nfp_prog, reg_both(dst + 1), reg_a(dst)); 13819f16c8abSJakub Kicinski else 13829f16c8abSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst + 1), imm_hi); 1383d9ae7f2bSJakub Kicinski 1384d9ae7f2bSJakub Kicinski return 0; 1385d9ae7f2bSJakub Kicinski } 1386d9ae7f2bSJakub Kicinski 1387d9ae7f2bSJakub Kicinski static int imm_ld8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1388d9ae7f2bSJakub Kicinski { 1389d9ae7f2bSJakub Kicinski meta->double_cb = imm_ld8_part2; 1390d9ae7f2bSJakub Kicinski return 0; 1391d9ae7f2bSJakub Kicinski } 1392d9ae7f2bSJakub Kicinski 1393d9ae7f2bSJakub Kicinski static int data_ld1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1394d9ae7f2bSJakub Kicinski { 1395d9ae7f2bSJakub Kicinski return construct_data_ld(nfp_prog, meta->insn.imm, 1); 1396d9ae7f2bSJakub Kicinski } 1397d9ae7f2bSJakub Kicinski 1398d9ae7f2bSJakub Kicinski static int data_ld2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1399d9ae7f2bSJakub Kicinski { 1400d9ae7f2bSJakub Kicinski return construct_data_ld(nfp_prog, meta->insn.imm, 2); 1401d9ae7f2bSJakub Kicinski } 1402d9ae7f2bSJakub Kicinski 1403d9ae7f2bSJakub Kicinski static int data_ld4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1404d9ae7f2bSJakub Kicinski { 1405d9ae7f2bSJakub Kicinski return construct_data_ld(nfp_prog, meta->insn.imm, 4); 1406d9ae7f2bSJakub Kicinski } 1407d9ae7f2bSJakub Kicinski 1408d9ae7f2bSJakub Kicinski static int data_ind_ld1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1409d9ae7f2bSJakub Kicinski { 1410d9ae7f2bSJakub Kicinski return construct_data_ind_ld(nfp_prog, meta->insn.imm, 14110a793977SJakub Kicinski meta->insn.src_reg * 2, 1); 1412d9ae7f2bSJakub Kicinski } 1413d9ae7f2bSJakub Kicinski 1414d9ae7f2bSJakub Kicinski static int data_ind_ld2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1415d9ae7f2bSJakub Kicinski { 1416d9ae7f2bSJakub Kicinski return construct_data_ind_ld(nfp_prog, meta->insn.imm, 14170a793977SJakub Kicinski meta->insn.src_reg * 2, 2); 1418d9ae7f2bSJakub Kicinski } 1419d9ae7f2bSJakub Kicinski 1420d9ae7f2bSJakub Kicinski static int data_ind_ld4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1421d9ae7f2bSJakub Kicinski { 1422d9ae7f2bSJakub Kicinski return construct_data_ind_ld(nfp_prog, meta->insn.imm, 14230a793977SJakub Kicinski meta->insn.src_reg * 2, 4); 1424d9ae7f2bSJakub Kicinski } 1425d9ae7f2bSJakub Kicinski 1426a82b23fbSJakub Kicinski static int 1427a82b23fbSJakub Kicinski mem_ldx_stack(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1428d3488480SJakub Kicinski unsigned int size, unsigned int ptr_off) 1429a82b23fbSJakub Kicinski { 1430d3488480SJakub Kicinski return mem_op_stack(nfp_prog, meta, size, ptr_off, 1431b14157eeSJakub Kicinski meta->insn.dst_reg * 2, meta->insn.src_reg * 2, 1432b14157eeSJakub Kicinski true, wrp_lmem_load); 1433a82b23fbSJakub Kicinski } 1434a82b23fbSJakub Kicinski 1435943c57b9SJakub Kicinski static int mem_ldx_skb(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1436943c57b9SJakub Kicinski u8 size) 1437d9ae7f2bSJakub Kicinski { 1438bfddbc8aSJakub Kicinski swreg dst = reg_both(meta->insn.dst_reg * 2); 1439bfddbc8aSJakub Kicinski 1440943c57b9SJakub Kicinski switch (meta->insn.off) { 1441943c57b9SJakub Kicinski case offsetof(struct sk_buff, len): 1442943c57b9SJakub Kicinski if (size != FIELD_SIZEOF(struct sk_buff, len)) 1443943c57b9SJakub Kicinski return -EOPNOTSUPP; 1444bfddbc8aSJakub Kicinski wrp_mov(nfp_prog, dst, plen_reg(nfp_prog)); 1445bfddbc8aSJakub Kicinski break; 1446bfddbc8aSJakub Kicinski case offsetof(struct sk_buff, data): 1447bfddbc8aSJakub Kicinski if (size != sizeof(void *)) 1448bfddbc8aSJakub Kicinski return -EOPNOTSUPP; 1449bfddbc8aSJakub Kicinski wrp_mov(nfp_prog, dst, pptr_reg(nfp_prog)); 1450bfddbc8aSJakub Kicinski break; 1451bfddbc8aSJakub Kicinski case offsetof(struct sk_buff, cb) + 1452bfddbc8aSJakub Kicinski offsetof(struct bpf_skb_data_end, data_end): 1453bfddbc8aSJakub Kicinski if (size != sizeof(void *)) 1454bfddbc8aSJakub Kicinski return -EOPNOTSUPP; 1455bfddbc8aSJakub Kicinski emit_alu(nfp_prog, dst, 1456bfddbc8aSJakub Kicinski plen_reg(nfp_prog), ALU_OP_ADD, pptr_reg(nfp_prog)); 1457943c57b9SJakub Kicinski break; 1458943c57b9SJakub Kicinski default: 1459d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1460943c57b9SJakub Kicinski } 1461943c57b9SJakub Kicinski 1462943c57b9SJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 1463d9ae7f2bSJakub Kicinski 1464d9ae7f2bSJakub Kicinski return 0; 1465d9ae7f2bSJakub Kicinski } 1466d9ae7f2bSJakub Kicinski 1467943c57b9SJakub Kicinski static int mem_ldx_xdp(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1468943c57b9SJakub Kicinski u8 size) 1469d9ae7f2bSJakub Kicinski { 1470b3f868dfSJakub Kicinski swreg dst = reg_both(meta->insn.dst_reg * 2); 1471d9ae7f2bSJakub Kicinski 1472943c57b9SJakub Kicinski if (size != sizeof(void *)) 1473943c57b9SJakub Kicinski return -EINVAL; 1474d9ae7f2bSJakub Kicinski 1475943c57b9SJakub Kicinski switch (meta->insn.off) { 1476943c57b9SJakub Kicinski case offsetof(struct xdp_buff, data): 1477c000dfb5SJakub Kicinski wrp_mov(nfp_prog, dst, pptr_reg(nfp_prog)); 1478943c57b9SJakub Kicinski break; 1479943c57b9SJakub Kicinski case offsetof(struct xdp_buff, data_end): 1480943c57b9SJakub Kicinski emit_alu(nfp_prog, dst, 1481943c57b9SJakub Kicinski plen_reg(nfp_prog), ALU_OP_ADD, pptr_reg(nfp_prog)); 1482943c57b9SJakub Kicinski break; 1483943c57b9SJakub Kicinski default: 1484943c57b9SJakub Kicinski return -EOPNOTSUPP; 1485943c57b9SJakub Kicinski } 1486d9ae7f2bSJakub Kicinski 1487943c57b9SJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 1488d9ae7f2bSJakub Kicinski 1489d9ae7f2bSJakub Kicinski return 0; 1490d9ae7f2bSJakub Kicinski } 1491d9ae7f2bSJakub Kicinski 14922ca71441SJakub Kicinski static int 14932ca71441SJakub Kicinski mem_ldx_data(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 14942ca71441SJakub Kicinski unsigned int size) 14952ca71441SJakub Kicinski { 14962ca71441SJakub Kicinski swreg tmp_reg; 14972ca71441SJakub Kicinski 14982ca71441SJakub Kicinski tmp_reg = re_load_imm_any(nfp_prog, meta->insn.off, imm_b(nfp_prog)); 14992ca71441SJakub Kicinski 15002ca71441SJakub Kicinski return data_ld_host_order(nfp_prog, meta->insn.src_reg * 2, tmp_reg, 15012ca71441SJakub Kicinski meta->insn.dst_reg * 2, size); 15022ca71441SJakub Kicinski } 15032ca71441SJakub Kicinski 15042ca71441SJakub Kicinski static int 15052ca71441SJakub Kicinski mem_ldx(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 15062ca71441SJakub Kicinski unsigned int size) 15072ca71441SJakub Kicinski { 15082ca71441SJakub Kicinski if (meta->ptr.type == PTR_TO_CTX) { 1509012bb8a8SJakub Kicinski if (nfp_prog->type == BPF_PROG_TYPE_XDP) 15102ca71441SJakub Kicinski return mem_ldx_xdp(nfp_prog, meta, size); 15112ca71441SJakub Kicinski else 15122ca71441SJakub Kicinski return mem_ldx_skb(nfp_prog, meta, size); 15132ca71441SJakub Kicinski } 15142ca71441SJakub Kicinski 15152ca71441SJakub Kicinski if (meta->ptr.type == PTR_TO_PACKET) 15162ca71441SJakub Kicinski return mem_ldx_data(nfp_prog, meta, size); 15172ca71441SJakub Kicinski 1518a82b23fbSJakub Kicinski if (meta->ptr.type == PTR_TO_STACK) 1519d3488480SJakub Kicinski return mem_ldx_stack(nfp_prog, meta, size, 1520d3488480SJakub Kicinski meta->ptr.off + meta->ptr.var_off.value); 1521a82b23fbSJakub Kicinski 15222ca71441SJakub Kicinski return -EOPNOTSUPP; 15232ca71441SJakub Kicinski } 15242ca71441SJakub Kicinski 15252ca71441SJakub Kicinski static int mem_ldx1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 15262ca71441SJakub Kicinski { 15272ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 1); 15282ca71441SJakub Kicinski } 15292ca71441SJakub Kicinski 15302ca71441SJakub Kicinski static int mem_ldx2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 15312ca71441SJakub Kicinski { 15322ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 2); 15332ca71441SJakub Kicinski } 15342ca71441SJakub Kicinski 1535d9ae7f2bSJakub Kicinski static int mem_ldx4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1536d9ae7f2bSJakub Kicinski { 15372ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 4); 15382ca71441SJakub Kicinski } 15392ca71441SJakub Kicinski 15402ca71441SJakub Kicinski static int mem_ldx8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 15412ca71441SJakub Kicinski { 15422ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 8); 1543d9ae7f2bSJakub Kicinski } 1544d9ae7f2bSJakub Kicinski 1545e663fe38SJakub Kicinski static int 1546e663fe38SJakub Kicinski mem_st_data(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1547e663fe38SJakub Kicinski unsigned int size) 1548d9ae7f2bSJakub Kicinski { 1549e663fe38SJakub Kicinski u64 imm = meta->insn.imm; /* sign extend */ 1550e663fe38SJakub Kicinski swreg off_reg; 1551e663fe38SJakub Kicinski 1552e663fe38SJakub Kicinski off_reg = re_load_imm_any(nfp_prog, meta->insn.off, imm_b(nfp_prog)); 1553e663fe38SJakub Kicinski 1554e663fe38SJakub Kicinski return data_st_host_order(nfp_prog, meta->insn.dst_reg * 2, off_reg, 1555e663fe38SJakub Kicinski imm, size); 1556e663fe38SJakub Kicinski } 1557e663fe38SJakub Kicinski 1558e663fe38SJakub Kicinski static int mem_st(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1559e663fe38SJakub Kicinski unsigned int size) 1560e663fe38SJakub Kicinski { 1561e663fe38SJakub Kicinski if (meta->ptr.type == PTR_TO_PACKET) 1562e663fe38SJakub Kicinski return mem_st_data(nfp_prog, meta, size); 1563e663fe38SJakub Kicinski 1564d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1565d9ae7f2bSJakub Kicinski } 1566d9ae7f2bSJakub Kicinski 1567e663fe38SJakub Kicinski static int mem_st1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1568d9ae7f2bSJakub Kicinski { 1569e663fe38SJakub Kicinski return mem_st(nfp_prog, meta, 1); 1570e663fe38SJakub Kicinski } 1571e663fe38SJakub Kicinski 1572e663fe38SJakub Kicinski static int mem_st2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1573e663fe38SJakub Kicinski { 1574e663fe38SJakub Kicinski return mem_st(nfp_prog, meta, 2); 1575e663fe38SJakub Kicinski } 1576e663fe38SJakub Kicinski 1577e663fe38SJakub Kicinski static int mem_st4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1578e663fe38SJakub Kicinski { 1579e663fe38SJakub Kicinski return mem_st(nfp_prog, meta, 4); 1580e663fe38SJakub Kicinski } 1581e663fe38SJakub Kicinski 1582e663fe38SJakub Kicinski static int mem_st8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1583e663fe38SJakub Kicinski { 1584e663fe38SJakub Kicinski return mem_st(nfp_prog, meta, 8); 1585e663fe38SJakub Kicinski } 1586e663fe38SJakub Kicinski 1587e663fe38SJakub Kicinski static int 1588e663fe38SJakub Kicinski mem_stx_data(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1589e663fe38SJakub Kicinski unsigned int size) 1590e663fe38SJakub Kicinski { 1591e663fe38SJakub Kicinski swreg off_reg; 1592e663fe38SJakub Kicinski 1593e663fe38SJakub Kicinski off_reg = re_load_imm_any(nfp_prog, meta->insn.off, imm_b(nfp_prog)); 1594e663fe38SJakub Kicinski 1595e663fe38SJakub Kicinski return data_stx_host_order(nfp_prog, meta->insn.dst_reg * 2, off_reg, 1596e663fe38SJakub Kicinski meta->insn.src_reg * 2, size); 1597e663fe38SJakub Kicinski } 1598e663fe38SJakub Kicinski 1599e663fe38SJakub Kicinski static int 1600ee9133a8SJakub Kicinski mem_stx_stack(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1601d3488480SJakub Kicinski unsigned int size, unsigned int ptr_off) 1602ee9133a8SJakub Kicinski { 1603d3488480SJakub Kicinski return mem_op_stack(nfp_prog, meta, size, ptr_off, 1604b14157eeSJakub Kicinski meta->insn.src_reg * 2, meta->insn.dst_reg * 2, 1605b14157eeSJakub Kicinski false, wrp_lmem_store); 1606ee9133a8SJakub Kicinski } 1607ee9133a8SJakub Kicinski 1608ee9133a8SJakub Kicinski static int 1609e663fe38SJakub Kicinski mem_stx(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1610e663fe38SJakub Kicinski unsigned int size) 1611e663fe38SJakub Kicinski { 1612e663fe38SJakub Kicinski if (meta->ptr.type == PTR_TO_PACKET) 1613e663fe38SJakub Kicinski return mem_stx_data(nfp_prog, meta, size); 1614e663fe38SJakub Kicinski 1615ee9133a8SJakub Kicinski if (meta->ptr.type == PTR_TO_STACK) 1616d3488480SJakub Kicinski return mem_stx_stack(nfp_prog, meta, size, 1617d3488480SJakub Kicinski meta->ptr.off + meta->ptr.var_off.value); 1618ee9133a8SJakub Kicinski 1619d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1620d9ae7f2bSJakub Kicinski } 1621d9ae7f2bSJakub Kicinski 1622e663fe38SJakub Kicinski static int mem_stx1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1623e663fe38SJakub Kicinski { 1624e663fe38SJakub Kicinski return mem_stx(nfp_prog, meta, 1); 1625e663fe38SJakub Kicinski } 1626e663fe38SJakub Kicinski 1627e663fe38SJakub Kicinski static int mem_stx2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1628e663fe38SJakub Kicinski { 1629e663fe38SJakub Kicinski return mem_stx(nfp_prog, meta, 2); 1630e663fe38SJakub Kicinski } 1631e663fe38SJakub Kicinski 1632d9ae7f2bSJakub Kicinski static int mem_stx4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1633d9ae7f2bSJakub Kicinski { 1634e663fe38SJakub Kicinski return mem_stx(nfp_prog, meta, 4); 1635e663fe38SJakub Kicinski } 16362ca71441SJakub Kicinski 1637e663fe38SJakub Kicinski static int mem_stx8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1638e663fe38SJakub Kicinski { 1639e663fe38SJakub Kicinski return mem_stx(nfp_prog, meta, 8); 1640d9ae7f2bSJakub Kicinski } 1641d9ae7f2bSJakub Kicinski 1642d9ae7f2bSJakub Kicinski static int jump(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1643d9ae7f2bSJakub Kicinski { 1644d9ae7f2bSJakub Kicinski if (meta->insn.off < 0) /* TODO */ 1645d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1646d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_UNC, meta->insn.off, 0); 1647d9ae7f2bSJakub Kicinski 1648d9ae7f2bSJakub Kicinski return 0; 1649d9ae7f2bSJakub Kicinski } 1650d9ae7f2bSJakub Kicinski 1651d9ae7f2bSJakub Kicinski static int jeq_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1652d9ae7f2bSJakub Kicinski { 1653d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1654d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1655b3f868dfSJakub Kicinski swreg or1, or2, tmp_reg; 1656b3f868dfSJakub Kicinski 1657b3f868dfSJakub Kicinski or1 = reg_a(insn->dst_reg * 2); 1658b3f868dfSJakub Kicinski or2 = reg_b(insn->dst_reg * 2 + 1); 1659d9ae7f2bSJakub Kicinski 1660d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 1661d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1662d9ae7f2bSJakub Kicinski 1663d9ae7f2bSJakub Kicinski if (imm & ~0U) { 1664d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 1665d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_a(nfp_prog), 1666d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_XOR, tmp_reg); 1667d9ae7f2bSJakub Kicinski or1 = imm_a(nfp_prog); 1668d9ae7f2bSJakub Kicinski } 1669d9ae7f2bSJakub Kicinski 1670d9ae7f2bSJakub Kicinski if (imm >> 32) { 1671d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 1672d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), 1673d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_XOR, tmp_reg); 1674d9ae7f2bSJakub Kicinski or2 = imm_b(nfp_prog); 1675d9ae7f2bSJakub Kicinski } 1676d9ae7f2bSJakub Kicinski 1677d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), or1, ALU_OP_OR, or2); 1678d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BEQ, insn->off, 0); 1679d9ae7f2bSJakub Kicinski 1680d9ae7f2bSJakub Kicinski return 0; 1681d9ae7f2bSJakub Kicinski } 1682d9ae7f2bSJakub Kicinski 1683d9ae7f2bSJakub Kicinski static int jgt_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1684d9ae7f2bSJakub Kicinski { 168526fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BLO, true); 1686d9ae7f2bSJakub Kicinski } 1687d9ae7f2bSJakub Kicinski 1688d9ae7f2bSJakub Kicinski static int jge_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1689d9ae7f2bSJakub Kicinski { 169026fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BHS, false); 1691d9ae7f2bSJakub Kicinski } 1692d9ae7f2bSJakub Kicinski 16935dd294d4SDaniel Borkmann static int jlt_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 16945dd294d4SDaniel Borkmann { 169526fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BLO, false); 16965dd294d4SDaniel Borkmann } 16975dd294d4SDaniel Borkmann 16985dd294d4SDaniel Borkmann static int jle_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 16995dd294d4SDaniel Borkmann { 170026fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BHS, true); 17015dd294d4SDaniel Borkmann } 17025dd294d4SDaniel Borkmann 1703d9ae7f2bSJakub Kicinski static int jset_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1704d9ae7f2bSJakub Kicinski { 1705d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1706d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1707b3f868dfSJakub Kicinski swreg tmp_reg; 1708d9ae7f2bSJakub Kicinski 1709d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 1710d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1711d9ae7f2bSJakub Kicinski 1712d9ae7f2bSJakub Kicinski if (!imm) { 1713d9ae7f2bSJakub Kicinski meta->skip = true; 1714d9ae7f2bSJakub Kicinski return 0; 1715d9ae7f2bSJakub Kicinski } 1716d9ae7f2bSJakub Kicinski 1717d9ae7f2bSJakub Kicinski if (imm & ~0U) { 1718d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 1719d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1720d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_AND, tmp_reg); 1721d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1722d9ae7f2bSJakub Kicinski } 1723d9ae7f2bSJakub Kicinski 1724d9ae7f2bSJakub Kicinski if (imm >> 32) { 1725d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 1726d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1727d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_AND, tmp_reg); 1728d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1729d9ae7f2bSJakub Kicinski } 1730d9ae7f2bSJakub Kicinski 1731d9ae7f2bSJakub Kicinski return 0; 1732d9ae7f2bSJakub Kicinski } 1733d9ae7f2bSJakub Kicinski 1734d9ae7f2bSJakub Kicinski static int jne_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1735d9ae7f2bSJakub Kicinski { 1736d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1737d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1738b3f868dfSJakub Kicinski swreg tmp_reg; 1739d9ae7f2bSJakub Kicinski 1740d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 1741d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1742d9ae7f2bSJakub Kicinski 1743d9ae7f2bSJakub Kicinski if (!imm) { 1744d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(insn->dst_reg * 2), 1745d9ae7f2bSJakub Kicinski ALU_OP_OR, reg_b(insn->dst_reg * 2 + 1)); 1746d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 174782837370SJakub Kicinski return 0; 1748d9ae7f2bSJakub Kicinski } 1749d9ae7f2bSJakub Kicinski 1750d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 1751d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1752d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_XOR, tmp_reg); 1753d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1754d9ae7f2bSJakub Kicinski 1755d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 1756d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1757d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_XOR, tmp_reg); 1758d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1759d9ae7f2bSJakub Kicinski 1760d9ae7f2bSJakub Kicinski return 0; 1761d9ae7f2bSJakub Kicinski } 1762d9ae7f2bSJakub Kicinski 1763d9ae7f2bSJakub Kicinski static int jeq_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1764d9ae7f2bSJakub Kicinski { 1765d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1766d9ae7f2bSJakub Kicinski 1767d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 1768d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1769d9ae7f2bSJakub Kicinski 1770d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_a(nfp_prog), reg_a(insn->dst_reg * 2), 1771d9ae7f2bSJakub Kicinski ALU_OP_XOR, reg_b(insn->src_reg * 2)); 1772d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), reg_a(insn->dst_reg * 2 + 1), 1773d9ae7f2bSJakub Kicinski ALU_OP_XOR, reg_b(insn->src_reg * 2 + 1)); 1774d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1775d9ae7f2bSJakub Kicinski imm_a(nfp_prog), ALU_OP_OR, imm_b(nfp_prog)); 1776d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BEQ, insn->off, 0); 1777d9ae7f2bSJakub Kicinski 1778d9ae7f2bSJakub Kicinski return 0; 1779d9ae7f2bSJakub Kicinski } 1780d9ae7f2bSJakub Kicinski 1781d9ae7f2bSJakub Kicinski static int jgt_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1782d9ae7f2bSJakub Kicinski { 178326fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BLO, true); 1784d9ae7f2bSJakub Kicinski } 1785d9ae7f2bSJakub Kicinski 1786d9ae7f2bSJakub Kicinski static int jge_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1787d9ae7f2bSJakub Kicinski { 178826fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BHS, false); 1789d9ae7f2bSJakub Kicinski } 1790d9ae7f2bSJakub Kicinski 17915dd294d4SDaniel Borkmann static int jlt_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 17925dd294d4SDaniel Borkmann { 179326fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BLO, false); 17945dd294d4SDaniel Borkmann } 17955dd294d4SDaniel Borkmann 17965dd294d4SDaniel Borkmann static int jle_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 17975dd294d4SDaniel Borkmann { 179826fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BHS, true); 17995dd294d4SDaniel Borkmann } 18005dd294d4SDaniel Borkmann 1801d9ae7f2bSJakub Kicinski static int jset_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1802d9ae7f2bSJakub Kicinski { 1803d9ae7f2bSJakub Kicinski return wrp_test_reg(nfp_prog, meta, ALU_OP_AND, BR_BNE); 1804d9ae7f2bSJakub Kicinski } 1805d9ae7f2bSJakub Kicinski 1806d9ae7f2bSJakub Kicinski static int jne_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1807d9ae7f2bSJakub Kicinski { 1808d9ae7f2bSJakub Kicinski return wrp_test_reg(nfp_prog, meta, ALU_OP_XOR, BR_BNE); 1809d9ae7f2bSJakub Kicinski } 1810d9ae7f2bSJakub Kicinski 1811d9ae7f2bSJakub Kicinski static int goto_out(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1812d9ae7f2bSJakub Kicinski { 1813d9ae7f2bSJakub Kicinski wrp_br_special(nfp_prog, BR_UNC, OP_BR_GO_OUT); 1814d9ae7f2bSJakub Kicinski 1815d9ae7f2bSJakub Kicinski return 0; 1816d9ae7f2bSJakub Kicinski } 1817d9ae7f2bSJakub Kicinski 1818d9ae7f2bSJakub Kicinski static const instr_cb_t instr_cb[256] = { 1819d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_MOV | BPF_X] = mov_reg64, 1820d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_MOV | BPF_K] = mov_imm64, 1821d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_XOR | BPF_X] = xor_reg64, 1822d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_XOR | BPF_K] = xor_imm64, 1823d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_AND | BPF_X] = and_reg64, 1824d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_AND | BPF_K] = and_imm64, 1825d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_OR | BPF_X] = or_reg64, 1826d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_OR | BPF_K] = or_imm64, 1827d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_ADD | BPF_X] = add_reg64, 1828d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_ADD | BPF_K] = add_imm64, 1829d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_SUB | BPF_X] = sub_reg64, 1830d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_SUB | BPF_K] = sub_imm64, 1831254ef4d7SJiong Wang [BPF_ALU64 | BPF_NEG] = neg_reg64, 1832d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_LSH | BPF_K] = shl_imm64, 1833d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_RSH | BPF_K] = shr_imm64, 1834d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_MOV | BPF_X] = mov_reg, 1835d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_MOV | BPF_K] = mov_imm, 1836d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_XOR | BPF_X] = xor_reg, 1837d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_XOR | BPF_K] = xor_imm, 1838d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_AND | BPF_X] = and_reg, 1839d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_AND | BPF_K] = and_imm, 1840d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_OR | BPF_X] = or_reg, 1841d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_OR | BPF_K] = or_imm, 1842d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_ADD | BPF_X] = add_reg, 1843d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_ADD | BPF_K] = add_imm, 1844d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_SUB | BPF_X] = sub_reg, 1845d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_SUB | BPF_K] = sub_imm, 1846254ef4d7SJiong Wang [BPF_ALU | BPF_NEG] = neg_reg, 1847d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_LSH | BPF_K] = shl_imm, 18483119d1fdSJakub Kicinski [BPF_ALU | BPF_END | BPF_X] = end_reg32, 1849d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IMM | BPF_DW] = imm_ld8, 1850d9ae7f2bSJakub Kicinski [BPF_LD | BPF_ABS | BPF_B] = data_ld1, 1851d9ae7f2bSJakub Kicinski [BPF_LD | BPF_ABS | BPF_H] = data_ld2, 1852d9ae7f2bSJakub Kicinski [BPF_LD | BPF_ABS | BPF_W] = data_ld4, 1853d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IND | BPF_B] = data_ind_ld1, 1854d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IND | BPF_H] = data_ind_ld2, 1855d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IND | BPF_W] = data_ind_ld4, 18562ca71441SJakub Kicinski [BPF_LDX | BPF_MEM | BPF_B] = mem_ldx1, 18572ca71441SJakub Kicinski [BPF_LDX | BPF_MEM | BPF_H] = mem_ldx2, 1858d9ae7f2bSJakub Kicinski [BPF_LDX | BPF_MEM | BPF_W] = mem_ldx4, 18592ca71441SJakub Kicinski [BPF_LDX | BPF_MEM | BPF_DW] = mem_ldx8, 1860e663fe38SJakub Kicinski [BPF_STX | BPF_MEM | BPF_B] = mem_stx1, 1861e663fe38SJakub Kicinski [BPF_STX | BPF_MEM | BPF_H] = mem_stx2, 1862d9ae7f2bSJakub Kicinski [BPF_STX | BPF_MEM | BPF_W] = mem_stx4, 1863e663fe38SJakub Kicinski [BPF_STX | BPF_MEM | BPF_DW] = mem_stx8, 1864e663fe38SJakub Kicinski [BPF_ST | BPF_MEM | BPF_B] = mem_st1, 1865e663fe38SJakub Kicinski [BPF_ST | BPF_MEM | BPF_H] = mem_st2, 1866e663fe38SJakub Kicinski [BPF_ST | BPF_MEM | BPF_W] = mem_st4, 1867e663fe38SJakub Kicinski [BPF_ST | BPF_MEM | BPF_DW] = mem_st8, 1868d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JA | BPF_K] = jump, 1869d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JEQ | BPF_K] = jeq_imm, 1870d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGT | BPF_K] = jgt_imm, 1871d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGE | BPF_K] = jge_imm, 18725dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLT | BPF_K] = jlt_imm, 18735dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLE | BPF_K] = jle_imm, 1874d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JSET | BPF_K] = jset_imm, 1875d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JNE | BPF_K] = jne_imm, 1876d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JEQ | BPF_X] = jeq_reg, 1877d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGT | BPF_X] = jgt_reg, 1878d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGE | BPF_X] = jge_reg, 18795dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLT | BPF_X] = jlt_reg, 18805dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLE | BPF_X] = jle_reg, 1881d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JSET | BPF_X] = jset_reg, 1882d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JNE | BPF_X] = jne_reg, 1883d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_EXIT] = goto_out, 1884d9ae7f2bSJakub Kicinski }; 1885d9ae7f2bSJakub Kicinski 1886d9ae7f2bSJakub Kicinski /* --- Misc code --- */ 1887d9ae7f2bSJakub Kicinski static void br_set_offset(u64 *instr, u16 offset) 1888d9ae7f2bSJakub Kicinski { 1889d9ae7f2bSJakub Kicinski u16 addr_lo, addr_hi; 1890d9ae7f2bSJakub Kicinski 1891d9ae7f2bSJakub Kicinski addr_lo = offset & (OP_BR_ADDR_LO >> __bf_shf(OP_BR_ADDR_LO)); 1892d9ae7f2bSJakub Kicinski addr_hi = offset != addr_lo; 1893d9ae7f2bSJakub Kicinski *instr &= ~(OP_BR_ADDR_HI | OP_BR_ADDR_LO); 1894d9ae7f2bSJakub Kicinski *instr |= FIELD_PREP(OP_BR_ADDR_HI, addr_hi); 1895d9ae7f2bSJakub Kicinski *instr |= FIELD_PREP(OP_BR_ADDR_LO, addr_lo); 1896d9ae7f2bSJakub Kicinski } 1897d9ae7f2bSJakub Kicinski 1898d9ae7f2bSJakub Kicinski /* --- Assembler logic --- */ 1899d9ae7f2bSJakub Kicinski static int nfp_fixup_branches(struct nfp_prog *nfp_prog) 1900d9ae7f2bSJakub Kicinski { 1901d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta, *next; 1902d9ae7f2bSJakub Kicinski u32 off, br_idx; 1903d9ae7f2bSJakub Kicinski u32 idx; 1904d9ae7f2bSJakub Kicinski 1905d9ae7f2bSJakub Kicinski nfp_for_each_insn_walk2(nfp_prog, meta, next) { 1906d9ae7f2bSJakub Kicinski if (meta->skip) 1907d9ae7f2bSJakub Kicinski continue; 1908d9ae7f2bSJakub Kicinski if (BPF_CLASS(meta->insn.code) != BPF_JMP) 1909d9ae7f2bSJakub Kicinski continue; 1910d9ae7f2bSJakub Kicinski 1911d9ae7f2bSJakub Kicinski br_idx = nfp_prog_offset_to_index(nfp_prog, next->off) - 1; 1912d9ae7f2bSJakub Kicinski if (!nfp_is_br(nfp_prog->prog[br_idx])) { 1913d9ae7f2bSJakub Kicinski pr_err("Fixup found block not ending in branch %d %02x %016llx!!\n", 1914d9ae7f2bSJakub Kicinski br_idx, meta->insn.code, nfp_prog->prog[br_idx]); 1915d9ae7f2bSJakub Kicinski return -ELOOP; 1916d9ae7f2bSJakub Kicinski } 1917d9ae7f2bSJakub Kicinski /* Leave special branches for later */ 1918d9ae7f2bSJakub Kicinski if (FIELD_GET(OP_BR_SPECIAL, nfp_prog->prog[br_idx])) 1919d9ae7f2bSJakub Kicinski continue; 1920d9ae7f2bSJakub Kicinski 1921d9ae7f2bSJakub Kicinski /* Find the target offset in assembler realm */ 1922d9ae7f2bSJakub Kicinski off = meta->insn.off; 1923d9ae7f2bSJakub Kicinski if (!off) { 1924d9ae7f2bSJakub Kicinski pr_err("Fixup found zero offset!!\n"); 1925d9ae7f2bSJakub Kicinski return -ELOOP; 1926d9ae7f2bSJakub Kicinski } 1927d9ae7f2bSJakub Kicinski 1928d9ae7f2bSJakub Kicinski while (off && nfp_meta_has_next(nfp_prog, next)) { 1929d9ae7f2bSJakub Kicinski next = nfp_meta_next(next); 1930d9ae7f2bSJakub Kicinski off--; 1931d9ae7f2bSJakub Kicinski } 1932d9ae7f2bSJakub Kicinski if (off) { 1933d9ae7f2bSJakub Kicinski pr_err("Fixup found too large jump!! %d\n", off); 1934d9ae7f2bSJakub Kicinski return -ELOOP; 1935d9ae7f2bSJakub Kicinski } 1936d9ae7f2bSJakub Kicinski 1937d9ae7f2bSJakub Kicinski if (next->skip) { 1938d9ae7f2bSJakub Kicinski pr_err("Branch landing on removed instruction!!\n"); 1939d9ae7f2bSJakub Kicinski return -ELOOP; 1940d9ae7f2bSJakub Kicinski } 1941d9ae7f2bSJakub Kicinski 1942d9ae7f2bSJakub Kicinski for (idx = nfp_prog_offset_to_index(nfp_prog, meta->off); 1943d9ae7f2bSJakub Kicinski idx <= br_idx; idx++) { 1944d9ae7f2bSJakub Kicinski if (!nfp_is_br(nfp_prog->prog[idx])) 1945d9ae7f2bSJakub Kicinski continue; 1946d9ae7f2bSJakub Kicinski br_set_offset(&nfp_prog->prog[idx], next->off); 1947d9ae7f2bSJakub Kicinski } 1948d9ae7f2bSJakub Kicinski } 1949d9ae7f2bSJakub Kicinski 1950d9ae7f2bSJakub Kicinski /* Fixup 'goto out's separately, they can be scattered around */ 1951d9ae7f2bSJakub Kicinski for (br_idx = 0; br_idx < nfp_prog->prog_len; br_idx++) { 1952d9ae7f2bSJakub Kicinski enum br_special special; 1953d9ae7f2bSJakub Kicinski 1954d9ae7f2bSJakub Kicinski if ((nfp_prog->prog[br_idx] & OP_BR_BASE_MASK) != OP_BR_BASE) 1955d9ae7f2bSJakub Kicinski continue; 1956d9ae7f2bSJakub Kicinski 1957d9ae7f2bSJakub Kicinski special = FIELD_GET(OP_BR_SPECIAL, nfp_prog->prog[br_idx]); 1958d9ae7f2bSJakub Kicinski switch (special) { 1959d9ae7f2bSJakub Kicinski case OP_BR_NORMAL: 1960d9ae7f2bSJakub Kicinski break; 1961d9ae7f2bSJakub Kicinski case OP_BR_GO_OUT: 1962d9ae7f2bSJakub Kicinski br_set_offset(&nfp_prog->prog[br_idx], 1963d9ae7f2bSJakub Kicinski nfp_prog->tgt_out); 1964d9ae7f2bSJakub Kicinski break; 1965d9ae7f2bSJakub Kicinski case OP_BR_GO_ABORT: 1966d9ae7f2bSJakub Kicinski br_set_offset(&nfp_prog->prog[br_idx], 1967d9ae7f2bSJakub Kicinski nfp_prog->tgt_abort); 1968d9ae7f2bSJakub Kicinski break; 1969d9ae7f2bSJakub Kicinski } 1970d9ae7f2bSJakub Kicinski 1971d9ae7f2bSJakub Kicinski nfp_prog->prog[br_idx] &= ~OP_BR_SPECIAL; 1972d9ae7f2bSJakub Kicinski } 1973d9ae7f2bSJakub Kicinski 1974d9ae7f2bSJakub Kicinski return 0; 1975d9ae7f2bSJakub Kicinski } 1976d9ae7f2bSJakub Kicinski 1977d9ae7f2bSJakub Kicinski static void nfp_intro(struct nfp_prog *nfp_prog) 1978d9ae7f2bSJakub Kicinski { 197918e53b6cSJakub Kicinski wrp_immed(nfp_prog, plen_reg(nfp_prog), GENMASK(13, 0)); 198018e53b6cSJakub Kicinski emit_alu(nfp_prog, plen_reg(nfp_prog), 198118e53b6cSJakub Kicinski plen_reg(nfp_prog), ALU_OP_AND, pv_len(nfp_prog)); 1982d9ae7f2bSJakub Kicinski } 1983d9ae7f2bSJakub Kicinski 1984d9ae7f2bSJakub Kicinski static void nfp_outro_tc_da(struct nfp_prog *nfp_prog) 1985d9ae7f2bSJakub Kicinski { 1986d9ae7f2bSJakub Kicinski /* TC direct-action mode: 1987d9ae7f2bSJakub Kicinski * 0,1 ok NOT SUPPORTED[1] 1988d9ae7f2bSJakub Kicinski * 2 drop 0x22 -> drop, count as stat1 1989d9ae7f2bSJakub Kicinski * 4,5 nuke 0x02 -> drop 1990d9ae7f2bSJakub Kicinski * 7 redir 0x44 -> redir, count as stat2 1991d9ae7f2bSJakub Kicinski * * unspec 0x11 -> pass, count as stat0 1992d9ae7f2bSJakub Kicinski * 1993d9ae7f2bSJakub Kicinski * [1] We can't support OK and RECLASSIFY because we can't tell TC 1994d9ae7f2bSJakub Kicinski * the exact decision made. We are forced to support UNSPEC 1995d9ae7f2bSJakub Kicinski * to handle aborts so that's the only one we handle for passing 1996d9ae7f2bSJakub Kicinski * packets up the stack. 1997d9ae7f2bSJakub Kicinski */ 1998d9ae7f2bSJakub Kicinski /* Target for aborts */ 1999d9ae7f2bSJakub Kicinski nfp_prog->tgt_abort = nfp_prog_current_offset(nfp_prog); 2000d9ae7f2bSJakub Kicinski 2001d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 2002d9ae7f2bSJakub Kicinski 2003c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 2004d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_imm(0x11), SHF_SC_L_SHF, 16); 2005d9ae7f2bSJakub Kicinski 2006d9ae7f2bSJakub Kicinski /* Target for normal exits */ 2007d9ae7f2bSJakub Kicinski nfp_prog->tgt_out = nfp_prog_current_offset(nfp_prog); 2008d9ae7f2bSJakub Kicinski 2009d9ae7f2bSJakub Kicinski /* if R0 > 7 jump to abort */ 2010d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_imm(7), ALU_OP_SUB, reg_b(0)); 2011d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BLO, nfp_prog->tgt_abort, 0); 2012c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 2013d9ae7f2bSJakub Kicinski 2014d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_b(2), 0x41221211); 2015d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_b(3), 0x41001211); 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, 2); 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_a(2), 2022d9ae7f2bSJakub Kicinski reg_imm(0xf), SHF_OP_AND, reg_b(2), SHF_SC_R_SHF, 0); 2023d9ae7f2bSJakub Kicinski 2024d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(1), ALU_OP_OR, reg_imm(0)); 2025d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_b(2), 2026d9ae7f2bSJakub Kicinski reg_imm(0xf), SHF_OP_AND, reg_b(3), SHF_SC_R_SHF, 0); 2027d9ae7f2bSJakub Kicinski 2028d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 2029d9ae7f2bSJakub Kicinski 2030d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_b(2), 2031d9ae7f2bSJakub Kicinski reg_a(2), SHF_OP_OR, reg_b(2), SHF_SC_L_SHF, 4); 2032d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_b(2), SHF_SC_L_SHF, 16); 2033d9ae7f2bSJakub Kicinski } 2034d9ae7f2bSJakub Kicinski 2035d9ae7f2bSJakub Kicinski static void nfp_outro_xdp(struct nfp_prog *nfp_prog) 2036d9ae7f2bSJakub Kicinski { 2037d9ae7f2bSJakub Kicinski /* XDP return codes: 2038d9ae7f2bSJakub Kicinski * 0 aborted 0x82 -> drop, count as stat3 2039d9ae7f2bSJakub Kicinski * 1 drop 0x22 -> drop, count as stat1 2040d9ae7f2bSJakub Kicinski * 2 pass 0x11 -> pass, count as stat0 2041d9ae7f2bSJakub Kicinski * 3 tx 0x44 -> redir, count as stat2 2042d9ae7f2bSJakub Kicinski * * unknown 0x82 -> drop, count as stat3 2043d9ae7f2bSJakub Kicinski */ 2044d9ae7f2bSJakub Kicinski /* Target for aborts */ 2045d9ae7f2bSJakub Kicinski nfp_prog->tgt_abort = nfp_prog_current_offset(nfp_prog); 2046d9ae7f2bSJakub Kicinski 2047d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 2048d9ae7f2bSJakub Kicinski 2049c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 2050d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_imm(0x82), SHF_SC_L_SHF, 16); 2051d9ae7f2bSJakub Kicinski 2052d9ae7f2bSJakub Kicinski /* Target for normal exits */ 2053d9ae7f2bSJakub Kicinski nfp_prog->tgt_out = nfp_prog_current_offset(nfp_prog); 2054d9ae7f2bSJakub Kicinski 2055d9ae7f2bSJakub Kicinski /* if R0 > 3 jump to abort */ 2056d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_imm(3), ALU_OP_SUB, reg_b(0)); 2057d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BLO, nfp_prog->tgt_abort, 0); 2058d9ae7f2bSJakub Kicinski 2059d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_b(2), 0x44112282); 2060d9ae7f2bSJakub Kicinski 2061d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_a(1), 2062d9ae7f2bSJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(0), SHF_SC_L_SHF, 3); 2063d9ae7f2bSJakub Kicinski 2064d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(1), ALU_OP_OR, reg_imm(0)); 2065d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_b(2), 2066d9ae7f2bSJakub Kicinski reg_imm(0xff), SHF_OP_AND, reg_b(2), SHF_SC_R_SHF, 0); 2067d9ae7f2bSJakub Kicinski 2068d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 2069d9ae7f2bSJakub Kicinski 2070c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 2071d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_b(2), SHF_SC_L_SHF, 16); 2072d9ae7f2bSJakub Kicinski } 2073d9ae7f2bSJakub Kicinski 2074d9ae7f2bSJakub Kicinski static void nfp_outro(struct nfp_prog *nfp_prog) 2075d9ae7f2bSJakub Kicinski { 2076012bb8a8SJakub Kicinski switch (nfp_prog->type) { 2077012bb8a8SJakub Kicinski case BPF_PROG_TYPE_SCHED_CLS: 2078d9ae7f2bSJakub Kicinski nfp_outro_tc_da(nfp_prog); 2079d9ae7f2bSJakub Kicinski break; 2080012bb8a8SJakub Kicinski case BPF_PROG_TYPE_XDP: 2081d9ae7f2bSJakub Kicinski nfp_outro_xdp(nfp_prog); 2082d9ae7f2bSJakub Kicinski break; 2083012bb8a8SJakub Kicinski default: 2084012bb8a8SJakub Kicinski WARN_ON(1); 2085d9ae7f2bSJakub Kicinski } 2086d9ae7f2bSJakub Kicinski } 2087d9ae7f2bSJakub Kicinski 2088d9ae7f2bSJakub Kicinski static int nfp_translate(struct nfp_prog *nfp_prog) 2089d9ae7f2bSJakub Kicinski { 2090d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta; 2091ff42bb9fSJakub Kicinski int err; 2092d9ae7f2bSJakub Kicinski 2093d9ae7f2bSJakub Kicinski nfp_intro(nfp_prog); 2094d9ae7f2bSJakub Kicinski if (nfp_prog->error) 2095d9ae7f2bSJakub Kicinski return nfp_prog->error; 2096d9ae7f2bSJakub Kicinski 2097d9ae7f2bSJakub Kicinski list_for_each_entry(meta, &nfp_prog->insns, l) { 2098d9ae7f2bSJakub Kicinski instr_cb_t cb = instr_cb[meta->insn.code]; 2099d9ae7f2bSJakub Kicinski 2100d9ae7f2bSJakub Kicinski meta->off = nfp_prog_current_offset(nfp_prog); 2101d9ae7f2bSJakub Kicinski 2102d9ae7f2bSJakub Kicinski if (meta->skip) { 2103d9ae7f2bSJakub Kicinski nfp_prog->n_translated++; 2104d9ae7f2bSJakub Kicinski continue; 2105d9ae7f2bSJakub Kicinski } 2106d9ae7f2bSJakub Kicinski 2107d9ae7f2bSJakub Kicinski if (nfp_meta_has_prev(nfp_prog, meta) && 2108d9ae7f2bSJakub Kicinski nfp_meta_prev(meta)->double_cb) 2109d9ae7f2bSJakub Kicinski cb = nfp_meta_prev(meta)->double_cb; 2110d9ae7f2bSJakub Kicinski if (!cb) 2111d9ae7f2bSJakub Kicinski return -ENOENT; 2112d9ae7f2bSJakub Kicinski err = cb(nfp_prog, meta); 2113d9ae7f2bSJakub Kicinski if (err) 2114d9ae7f2bSJakub Kicinski return err; 2115d9ae7f2bSJakub Kicinski 2116d9ae7f2bSJakub Kicinski nfp_prog->n_translated++; 2117d9ae7f2bSJakub Kicinski } 2118d9ae7f2bSJakub Kicinski 2119d9ae7f2bSJakub Kicinski nfp_outro(nfp_prog); 2120d9ae7f2bSJakub Kicinski if (nfp_prog->error) 2121d9ae7f2bSJakub Kicinski return nfp_prog->error; 2122d9ae7f2bSJakub Kicinski 2123ff42bb9fSJakub Kicinski wrp_nops(nfp_prog, NFP_USTORE_PREFETCH_WINDOW); 21241c03e03fSJakub Kicinski if (nfp_prog->error) 21251c03e03fSJakub Kicinski return nfp_prog->error; 21261c03e03fSJakub Kicinski 2127d9ae7f2bSJakub Kicinski return nfp_fixup_branches(nfp_prog); 2128d9ae7f2bSJakub Kicinski } 2129d9ae7f2bSJakub Kicinski 2130d9ae7f2bSJakub Kicinski static int 2131d9ae7f2bSJakub Kicinski nfp_prog_prepare(struct nfp_prog *nfp_prog, const struct bpf_insn *prog, 2132d9ae7f2bSJakub Kicinski unsigned int cnt) 2133d9ae7f2bSJakub Kicinski { 2134d9ae7f2bSJakub Kicinski unsigned int i; 2135d9ae7f2bSJakub Kicinski 2136d9ae7f2bSJakub Kicinski for (i = 0; i < cnt; i++) { 2137d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta; 2138d9ae7f2bSJakub Kicinski 2139d9ae7f2bSJakub Kicinski meta = kzalloc(sizeof(*meta), GFP_KERNEL); 2140d9ae7f2bSJakub Kicinski if (!meta) 2141d9ae7f2bSJakub Kicinski return -ENOMEM; 2142d9ae7f2bSJakub Kicinski 2143d9ae7f2bSJakub Kicinski meta->insn = prog[i]; 2144d9ae7f2bSJakub Kicinski meta->n = i; 2145d9ae7f2bSJakub Kicinski 2146d9ae7f2bSJakub Kicinski list_add_tail(&meta->l, &nfp_prog->insns); 2147d9ae7f2bSJakub Kicinski } 2148d9ae7f2bSJakub Kicinski 2149d9ae7f2bSJakub Kicinski return 0; 2150d9ae7f2bSJakub Kicinski } 2151d9ae7f2bSJakub Kicinski 2152d9ae7f2bSJakub Kicinski /* --- Optimizations --- */ 2153d9ae7f2bSJakub Kicinski static void nfp_bpf_opt_reg_init(struct nfp_prog *nfp_prog) 2154d9ae7f2bSJakub Kicinski { 2155d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta; 2156d9ae7f2bSJakub Kicinski 2157d9ae7f2bSJakub Kicinski list_for_each_entry(meta, &nfp_prog->insns, l) { 2158d9ae7f2bSJakub Kicinski struct bpf_insn insn = meta->insn; 2159d9ae7f2bSJakub Kicinski 2160d9ae7f2bSJakub Kicinski /* Programs converted from cBPF start with register xoring */ 2161d9ae7f2bSJakub Kicinski if (insn.code == (BPF_ALU64 | BPF_XOR | BPF_X) && 2162d9ae7f2bSJakub Kicinski insn.src_reg == insn.dst_reg) 2163d9ae7f2bSJakub Kicinski continue; 2164d9ae7f2bSJakub Kicinski 2165d9ae7f2bSJakub Kicinski /* Programs start with R6 = R1 but we ignore the skb pointer */ 2166d9ae7f2bSJakub Kicinski if (insn.code == (BPF_ALU64 | BPF_MOV | BPF_X) && 2167d9ae7f2bSJakub Kicinski insn.src_reg == 1 && insn.dst_reg == 6) 2168d9ae7f2bSJakub Kicinski meta->skip = true; 2169d9ae7f2bSJakub Kicinski 2170d9ae7f2bSJakub Kicinski /* Return as soon as something doesn't match */ 2171d9ae7f2bSJakub Kicinski if (!meta->skip) 2172d9ae7f2bSJakub Kicinski return; 2173d9ae7f2bSJakub Kicinski } 2174d9ae7f2bSJakub Kicinski } 2175d9ae7f2bSJakub Kicinski 2176d9ae7f2bSJakub Kicinski /* Remove masking after load since our load guarantees this is not needed */ 2177d9ae7f2bSJakub Kicinski static void nfp_bpf_opt_ld_mask(struct nfp_prog *nfp_prog) 2178d9ae7f2bSJakub Kicinski { 2179d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta1, *meta2; 2180d9ae7f2bSJakub Kicinski const s32 exp_mask[] = { 2181d9ae7f2bSJakub Kicinski [BPF_B] = 0x000000ffU, 2182d9ae7f2bSJakub Kicinski [BPF_H] = 0x0000ffffU, 2183d9ae7f2bSJakub Kicinski [BPF_W] = 0xffffffffU, 2184d9ae7f2bSJakub Kicinski }; 2185d9ae7f2bSJakub Kicinski 2186d9ae7f2bSJakub Kicinski nfp_for_each_insn_walk2(nfp_prog, meta1, meta2) { 2187d9ae7f2bSJakub Kicinski struct bpf_insn insn, next; 2188d9ae7f2bSJakub Kicinski 2189d9ae7f2bSJakub Kicinski insn = meta1->insn; 2190d9ae7f2bSJakub Kicinski next = meta2->insn; 2191d9ae7f2bSJakub Kicinski 2192d9ae7f2bSJakub Kicinski if (BPF_CLASS(insn.code) != BPF_LD) 2193d9ae7f2bSJakub Kicinski continue; 2194d9ae7f2bSJakub Kicinski if (BPF_MODE(insn.code) != BPF_ABS && 2195d9ae7f2bSJakub Kicinski BPF_MODE(insn.code) != BPF_IND) 2196d9ae7f2bSJakub Kicinski continue; 2197d9ae7f2bSJakub Kicinski 2198d9ae7f2bSJakub Kicinski if (next.code != (BPF_ALU64 | BPF_AND | BPF_K)) 2199d9ae7f2bSJakub Kicinski continue; 2200d9ae7f2bSJakub Kicinski 2201d9ae7f2bSJakub Kicinski if (!exp_mask[BPF_SIZE(insn.code)]) 2202d9ae7f2bSJakub Kicinski continue; 2203d9ae7f2bSJakub Kicinski if (exp_mask[BPF_SIZE(insn.code)] != next.imm) 2204d9ae7f2bSJakub Kicinski continue; 2205d9ae7f2bSJakub Kicinski 2206d9ae7f2bSJakub Kicinski if (next.src_reg || next.dst_reg) 2207d9ae7f2bSJakub Kicinski continue; 2208d9ae7f2bSJakub Kicinski 2209d9ae7f2bSJakub Kicinski meta2->skip = true; 2210d9ae7f2bSJakub Kicinski } 2211d9ae7f2bSJakub Kicinski } 2212d9ae7f2bSJakub Kicinski 2213d9ae7f2bSJakub Kicinski static void nfp_bpf_opt_ld_shift(struct nfp_prog *nfp_prog) 2214d9ae7f2bSJakub Kicinski { 2215d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta1, *meta2, *meta3; 2216d9ae7f2bSJakub Kicinski 2217d9ae7f2bSJakub Kicinski nfp_for_each_insn_walk3(nfp_prog, meta1, meta2, meta3) { 2218d9ae7f2bSJakub Kicinski struct bpf_insn insn, next1, next2; 2219d9ae7f2bSJakub Kicinski 2220d9ae7f2bSJakub Kicinski insn = meta1->insn; 2221d9ae7f2bSJakub Kicinski next1 = meta2->insn; 2222d9ae7f2bSJakub Kicinski next2 = meta3->insn; 2223d9ae7f2bSJakub Kicinski 2224d9ae7f2bSJakub Kicinski if (BPF_CLASS(insn.code) != BPF_LD) 2225d9ae7f2bSJakub Kicinski continue; 2226d9ae7f2bSJakub Kicinski if (BPF_MODE(insn.code) != BPF_ABS && 2227d9ae7f2bSJakub Kicinski BPF_MODE(insn.code) != BPF_IND) 2228d9ae7f2bSJakub Kicinski continue; 2229d9ae7f2bSJakub Kicinski if (BPF_SIZE(insn.code) != BPF_W) 2230d9ae7f2bSJakub Kicinski continue; 2231d9ae7f2bSJakub Kicinski 2232d9ae7f2bSJakub Kicinski if (!(next1.code == (BPF_LSH | BPF_K | BPF_ALU64) && 2233d9ae7f2bSJakub Kicinski next2.code == (BPF_RSH | BPF_K | BPF_ALU64)) && 2234d9ae7f2bSJakub Kicinski !(next1.code == (BPF_RSH | BPF_K | BPF_ALU64) && 2235d9ae7f2bSJakub Kicinski next2.code == (BPF_LSH | BPF_K | BPF_ALU64))) 2236d9ae7f2bSJakub Kicinski continue; 2237d9ae7f2bSJakub Kicinski 2238d9ae7f2bSJakub Kicinski if (next1.src_reg || next1.dst_reg || 2239d9ae7f2bSJakub Kicinski next2.src_reg || next2.dst_reg) 2240d9ae7f2bSJakub Kicinski continue; 2241d9ae7f2bSJakub Kicinski 2242d9ae7f2bSJakub Kicinski if (next1.imm != 0x20 || next2.imm != 0x20) 2243d9ae7f2bSJakub Kicinski continue; 2244d9ae7f2bSJakub Kicinski 2245d9ae7f2bSJakub Kicinski meta2->skip = true; 2246d9ae7f2bSJakub Kicinski meta3->skip = true; 2247d9ae7f2bSJakub Kicinski } 2248d9ae7f2bSJakub Kicinski } 2249d9ae7f2bSJakub Kicinski 2250d9ae7f2bSJakub Kicinski static int nfp_bpf_optimize(struct nfp_prog *nfp_prog) 2251d9ae7f2bSJakub Kicinski { 2252d9ae7f2bSJakub Kicinski nfp_bpf_opt_reg_init(nfp_prog); 2253d9ae7f2bSJakub Kicinski 2254d9ae7f2bSJakub Kicinski nfp_bpf_opt_ld_mask(nfp_prog); 2255d9ae7f2bSJakub Kicinski nfp_bpf_opt_ld_shift(nfp_prog); 2256d9ae7f2bSJakub Kicinski 2257d9ae7f2bSJakub Kicinski return 0; 2258d9ae7f2bSJakub Kicinski } 2259d9ae7f2bSJakub Kicinski 22602e85d388SJakub Kicinski static int nfp_bpf_ustore_calc(struct nfp_prog *nfp_prog, __le64 *ustore) 2261fd068ddcSJakub Kicinski { 2262fd068ddcSJakub Kicinski int i; 2263fd068ddcSJakub Kicinski 2264fd068ddcSJakub Kicinski for (i = 0; i < nfp_prog->prog_len; i++) { 2265fd068ddcSJakub Kicinski int err; 2266fd068ddcSJakub Kicinski 2267fd068ddcSJakub Kicinski err = nfp_ustore_check_valid_no_ecc(nfp_prog->prog[i]); 2268fd068ddcSJakub Kicinski if (err) 2269fd068ddcSJakub Kicinski return err; 2270fd068ddcSJakub Kicinski 2271fd068ddcSJakub Kicinski nfp_prog->prog[i] = nfp_ustore_calc_ecc_insn(nfp_prog->prog[i]); 22722e85d388SJakub Kicinski 22732e85d388SJakub Kicinski ustore[i] = cpu_to_le64(nfp_prog->prog[i]); 2274fd068ddcSJakub Kicinski } 2275fd068ddcSJakub Kicinski 2276fd068ddcSJakub Kicinski return 0; 2277fd068ddcSJakub Kicinski } 2278fd068ddcSJakub Kicinski 2279d9ae7f2bSJakub Kicinski /** 2280d9ae7f2bSJakub Kicinski * nfp_bpf_jit() - translate BPF code into NFP assembly 2281d9ae7f2bSJakub Kicinski * @filter: kernel BPF filter struct 2282d9ae7f2bSJakub Kicinski * @prog_mem: memory to store assembler instructions 2283d9ae7f2bSJakub Kicinski * @prog_start: offset of the first instruction when loaded 2284d9ae7f2bSJakub Kicinski * @prog_done: where to jump on exit 2285d9ae7f2bSJakub Kicinski * @prog_sz: size of @prog_mem in instructions 2286d9ae7f2bSJakub Kicinski * @res: achieved parameters of translation results 2287d9ae7f2bSJakub Kicinski */ 2288d9ae7f2bSJakub Kicinski int 2289d9ae7f2bSJakub Kicinski nfp_bpf_jit(struct bpf_prog *filter, void *prog_mem, 2290d9ae7f2bSJakub Kicinski unsigned int prog_start, unsigned int prog_done, 2291d9ae7f2bSJakub Kicinski unsigned int prog_sz, struct nfp_bpf_result *res) 2292d9ae7f2bSJakub Kicinski { 2293d9ae7f2bSJakub Kicinski struct nfp_prog *nfp_prog; 2294d9ae7f2bSJakub Kicinski int ret; 2295d9ae7f2bSJakub Kicinski 2296d9ae7f2bSJakub Kicinski nfp_prog = kzalloc(sizeof(*nfp_prog), GFP_KERNEL); 2297d9ae7f2bSJakub Kicinski if (!nfp_prog) 2298d9ae7f2bSJakub Kicinski return -ENOMEM; 2299d9ae7f2bSJakub Kicinski 2300d9ae7f2bSJakub Kicinski INIT_LIST_HEAD(&nfp_prog->insns); 2301012bb8a8SJakub Kicinski nfp_prog->type = filter->type; 2302d9ae7f2bSJakub Kicinski nfp_prog->start_off = prog_start; 2303d9ae7f2bSJakub Kicinski nfp_prog->tgt_done = prog_done; 2304d9ae7f2bSJakub Kicinski 2305d9ae7f2bSJakub Kicinski ret = nfp_prog_prepare(nfp_prog, filter->insnsi, filter->len); 2306d9ae7f2bSJakub Kicinski if (ret) 2307d9ae7f2bSJakub Kicinski goto out; 2308d9ae7f2bSJakub Kicinski 2309d9ae7f2bSJakub Kicinski ret = nfp_prog_verify(nfp_prog, filter); 2310d9ae7f2bSJakub Kicinski if (ret) 2311d9ae7f2bSJakub Kicinski goto out; 2312d9ae7f2bSJakub Kicinski 2313d9ae7f2bSJakub Kicinski ret = nfp_bpf_optimize(nfp_prog); 2314d9ae7f2bSJakub Kicinski if (ret) 2315d9ae7f2bSJakub Kicinski goto out; 2316d9ae7f2bSJakub Kicinski 2317226e0e94SJakub Kicinski nfp_prog->num_regs = MAX_BPF_REG; 2318d9ae7f2bSJakub Kicinski nfp_prog->regs_per_thread = 32; 2319d9ae7f2bSJakub Kicinski 2320d9ae7f2bSJakub Kicinski nfp_prog->prog = prog_mem; 2321d9ae7f2bSJakub Kicinski nfp_prog->__prog_alloc_len = prog_sz; 2322d9ae7f2bSJakub Kicinski 2323d9ae7f2bSJakub Kicinski ret = nfp_translate(nfp_prog); 2324d9ae7f2bSJakub Kicinski if (ret) { 2325d9ae7f2bSJakub Kicinski pr_err("Translation failed with error %d (translated: %u)\n", 2326d9ae7f2bSJakub Kicinski ret, nfp_prog->n_translated); 2327d9ae7f2bSJakub Kicinski ret = -EINVAL; 2328fd068ddcSJakub Kicinski goto out; 2329d9ae7f2bSJakub Kicinski } 2330d9ae7f2bSJakub Kicinski 23312e85d388SJakub Kicinski ret = nfp_bpf_ustore_calc(nfp_prog, (__force __le64 *)prog_mem); 2332fd068ddcSJakub Kicinski 2333d9ae7f2bSJakub Kicinski res->n_instr = nfp_prog->prog_len; 2334226e0e94SJakub Kicinski res->dense_mode = false; 2335d9ae7f2bSJakub Kicinski out: 2336d9ae7f2bSJakub Kicinski nfp_prog_free(nfp_prog); 2337d9ae7f2bSJakub Kicinski 2338d9ae7f2bSJakub Kicinski return ret; 2339d9ae7f2bSJakub Kicinski } 2340