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_br_byte(struct nfp_prog *nfp_prog, u8 areg, u8 breg, bool imm8, 206995e101fSJakub Kicinski u8 byte, bool equal, u16 addr, u8 defer, bool src_lmextn) 207d9ae7f2bSJakub Kicinski { 208d9ae7f2bSJakub Kicinski u16 addr_lo, addr_hi; 209d9ae7f2bSJakub Kicinski u64 insn; 210d9ae7f2bSJakub Kicinski 211d9ae7f2bSJakub Kicinski addr_lo = addr & (OP_BB_ADDR_LO >> __bf_shf(OP_BB_ADDR_LO)); 212d9ae7f2bSJakub Kicinski addr_hi = addr != addr_lo; 213d9ae7f2bSJakub Kicinski 214d9ae7f2bSJakub Kicinski insn = OP_BBYTE_BASE | 215d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BB_A_SRC, areg) | 216d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BB_BYTE, byte) | 217d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BB_B_SRC, breg) | 218d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BB_I8, imm8) | 219d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BB_EQ, equal) | 220d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BB_DEFBR, defer) | 221d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BB_ADDR_LO, addr_lo) | 222995e101fSJakub Kicinski FIELD_PREP(OP_BB_ADDR_HI, addr_hi) | 223995e101fSJakub Kicinski FIELD_PREP(OP_BB_SRC_LMEXTN, src_lmextn); 224d9ae7f2bSJakub Kicinski 225d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 226d9ae7f2bSJakub Kicinski } 227d9ae7f2bSJakub Kicinski 228d9ae7f2bSJakub Kicinski static void 229d9ae7f2bSJakub Kicinski emit_br_byte_neq(struct nfp_prog *nfp_prog, 230995e101fSJakub Kicinski swreg src, u8 imm, u8 byte, u16 addr, u8 defer) 231d9ae7f2bSJakub Kicinski { 232d9ae7f2bSJakub Kicinski struct nfp_insn_re_regs reg; 233d9ae7f2bSJakub Kicinski int err; 234d9ae7f2bSJakub Kicinski 235995e101fSJakub Kicinski err = swreg_to_restricted(reg_none(), src, reg_imm(imm), ®, true); 236d9ae7f2bSJakub Kicinski if (err) { 237d9ae7f2bSJakub Kicinski nfp_prog->error = err; 238d9ae7f2bSJakub Kicinski return; 239d9ae7f2bSJakub Kicinski } 240d9ae7f2bSJakub Kicinski 241d9ae7f2bSJakub Kicinski __emit_br_byte(nfp_prog, reg.areg, reg.breg, reg.i8, byte, false, addr, 242995e101fSJakub Kicinski defer, reg.src_lmextn); 243d9ae7f2bSJakub Kicinski } 244d9ae7f2bSJakub Kicinski 245d9ae7f2bSJakub Kicinski static void 246d9ae7f2bSJakub Kicinski __emit_immed(struct nfp_prog *nfp_prog, u16 areg, u16 breg, u16 imm_hi, 247d9ae7f2bSJakub Kicinski enum immed_width width, bool invert, 248995e101fSJakub Kicinski enum immed_shift shift, bool wr_both, 249995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 250d9ae7f2bSJakub Kicinski { 251d9ae7f2bSJakub Kicinski u64 insn; 252d9ae7f2bSJakub Kicinski 253d9ae7f2bSJakub Kicinski insn = OP_IMMED_BASE | 254d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_A_SRC, areg) | 255d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_B_SRC, breg) | 256d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_IMM, imm_hi) | 257d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_WIDTH, width) | 258d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_INV, invert) | 259d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_SHIFT, shift) | 260995e101fSJakub Kicinski FIELD_PREP(OP_IMMED_WR_AB, wr_both) | 261995e101fSJakub Kicinski FIELD_PREP(OP_IMMED_SRC_LMEXTN, src_lmextn) | 262995e101fSJakub Kicinski FIELD_PREP(OP_IMMED_DST_LMEXTN, dst_lmextn); 263d9ae7f2bSJakub Kicinski 264d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 265d9ae7f2bSJakub Kicinski } 266d9ae7f2bSJakub Kicinski 267d9ae7f2bSJakub Kicinski static void 268b3f868dfSJakub Kicinski emit_immed(struct nfp_prog *nfp_prog, swreg dst, u16 imm, 269d9ae7f2bSJakub Kicinski enum immed_width width, bool invert, enum immed_shift shift) 270d9ae7f2bSJakub Kicinski { 271d9ae7f2bSJakub Kicinski struct nfp_insn_ur_regs reg; 272d9ae7f2bSJakub Kicinski int err; 273d9ae7f2bSJakub Kicinski 274b3f868dfSJakub Kicinski if (swreg_type(dst) == NN_REG_IMM) { 275d9ae7f2bSJakub Kicinski nfp_prog->error = -EFAULT; 276d9ae7f2bSJakub Kicinski return; 277d9ae7f2bSJakub Kicinski } 278d9ae7f2bSJakub Kicinski 279d9ae7f2bSJakub Kicinski err = swreg_to_unrestricted(dst, dst, reg_imm(imm & 0xff), ®); 280d9ae7f2bSJakub Kicinski if (err) { 281d9ae7f2bSJakub Kicinski nfp_prog->error = err; 282d9ae7f2bSJakub Kicinski return; 283d9ae7f2bSJakub Kicinski } 284d9ae7f2bSJakub Kicinski 285d9ae7f2bSJakub Kicinski __emit_immed(nfp_prog, reg.areg, reg.breg, imm >> 8, width, 286995e101fSJakub Kicinski invert, shift, reg.wr_both, 287995e101fSJakub Kicinski reg.dst_lmextn, reg.src_lmextn); 288d9ae7f2bSJakub Kicinski } 289d9ae7f2bSJakub Kicinski 290d9ae7f2bSJakub Kicinski static void 291d9ae7f2bSJakub Kicinski __emit_shf(struct nfp_prog *nfp_prog, u16 dst, enum alu_dst_ab dst_ab, 292d9ae7f2bSJakub Kicinski enum shf_sc sc, u8 shift, 293995e101fSJakub Kicinski u16 areg, enum shf_op op, u16 breg, bool i8, bool sw, bool wr_both, 294995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 295d9ae7f2bSJakub Kicinski { 296d9ae7f2bSJakub Kicinski u64 insn; 297d9ae7f2bSJakub Kicinski 298d9ae7f2bSJakub Kicinski if (!FIELD_FIT(OP_SHF_SHIFT, shift)) { 299d9ae7f2bSJakub Kicinski nfp_prog->error = -EFAULT; 300d9ae7f2bSJakub Kicinski return; 301d9ae7f2bSJakub Kicinski } 302d9ae7f2bSJakub Kicinski 303d9ae7f2bSJakub Kicinski if (sc == SHF_SC_L_SHF) 304d9ae7f2bSJakub Kicinski shift = 32 - shift; 305d9ae7f2bSJakub Kicinski 306d9ae7f2bSJakub Kicinski insn = OP_SHF_BASE | 307d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_A_SRC, areg) | 308d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_SC, sc) | 309d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_B_SRC, breg) | 310d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_I8, i8) | 311d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_SW, sw) | 312d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_DST, dst) | 313d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_SHIFT, shift) | 314d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_OP, op) | 315d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_DST_AB, dst_ab) | 316995e101fSJakub Kicinski FIELD_PREP(OP_SHF_WR_AB, wr_both) | 317995e101fSJakub Kicinski FIELD_PREP(OP_SHF_SRC_LMEXTN, src_lmextn) | 318995e101fSJakub Kicinski FIELD_PREP(OP_SHF_DST_LMEXTN, dst_lmextn); 319d9ae7f2bSJakub Kicinski 320d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 321d9ae7f2bSJakub Kicinski } 322d9ae7f2bSJakub Kicinski 323d9ae7f2bSJakub Kicinski static void 324b3f868dfSJakub Kicinski emit_shf(struct nfp_prog *nfp_prog, swreg dst, 325b3f868dfSJakub Kicinski swreg lreg, enum shf_op op, swreg rreg, enum shf_sc sc, u8 shift) 326d9ae7f2bSJakub Kicinski { 327d9ae7f2bSJakub Kicinski struct nfp_insn_re_regs reg; 328d9ae7f2bSJakub Kicinski int err; 329d9ae7f2bSJakub Kicinski 330d9ae7f2bSJakub Kicinski err = swreg_to_restricted(dst, lreg, rreg, ®, true); 331d9ae7f2bSJakub Kicinski if (err) { 332d9ae7f2bSJakub Kicinski nfp_prog->error = err; 333d9ae7f2bSJakub Kicinski return; 334d9ae7f2bSJakub Kicinski } 335d9ae7f2bSJakub Kicinski 336d9ae7f2bSJakub Kicinski __emit_shf(nfp_prog, reg.dst, reg.dst_ab, sc, shift, 337995e101fSJakub Kicinski reg.areg, op, reg.breg, reg.i8, reg.swap, reg.wr_both, 338995e101fSJakub Kicinski reg.dst_lmextn, reg.src_lmextn); 339d9ae7f2bSJakub Kicinski } 340d9ae7f2bSJakub Kicinski 341d9ae7f2bSJakub Kicinski static void 342d9ae7f2bSJakub Kicinski __emit_alu(struct nfp_prog *nfp_prog, u16 dst, enum alu_dst_ab dst_ab, 343995e101fSJakub Kicinski u16 areg, enum alu_op op, u16 breg, bool swap, bool wr_both, 344995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 345d9ae7f2bSJakub Kicinski { 346d9ae7f2bSJakub Kicinski u64 insn; 347d9ae7f2bSJakub Kicinski 348d9ae7f2bSJakub Kicinski insn = OP_ALU_BASE | 349d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_A_SRC, areg) | 350d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_B_SRC, breg) | 351d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_DST, dst) | 352d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_SW, swap) | 353d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_OP, op) | 354d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_DST_AB, dst_ab) | 355995e101fSJakub Kicinski FIELD_PREP(OP_ALU_WR_AB, wr_both) | 356995e101fSJakub Kicinski FIELD_PREP(OP_ALU_SRC_LMEXTN, src_lmextn) | 357995e101fSJakub Kicinski FIELD_PREP(OP_ALU_DST_LMEXTN, dst_lmextn); 358d9ae7f2bSJakub Kicinski 359d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 360d9ae7f2bSJakub Kicinski } 361d9ae7f2bSJakub Kicinski 362d9ae7f2bSJakub Kicinski static void 363b3f868dfSJakub Kicinski emit_alu(struct nfp_prog *nfp_prog, swreg dst, 364b3f868dfSJakub Kicinski swreg lreg, enum alu_op op, swreg rreg) 365d9ae7f2bSJakub Kicinski { 366d9ae7f2bSJakub Kicinski struct nfp_insn_ur_regs reg; 367d9ae7f2bSJakub Kicinski int err; 368d9ae7f2bSJakub Kicinski 369d9ae7f2bSJakub Kicinski err = swreg_to_unrestricted(dst, lreg, rreg, ®); 370d9ae7f2bSJakub Kicinski if (err) { 371d9ae7f2bSJakub Kicinski nfp_prog->error = err; 372d9ae7f2bSJakub Kicinski return; 373d9ae7f2bSJakub Kicinski } 374d9ae7f2bSJakub Kicinski 375d9ae7f2bSJakub Kicinski __emit_alu(nfp_prog, reg.dst, reg.dst_ab, 376995e101fSJakub Kicinski reg.areg, op, reg.breg, reg.swap, reg.wr_both, 377995e101fSJakub Kicinski reg.dst_lmextn, reg.src_lmextn); 378d9ae7f2bSJakub Kicinski } 379d9ae7f2bSJakub Kicinski 380d9ae7f2bSJakub Kicinski static void 381d9ae7f2bSJakub Kicinski __emit_ld_field(struct nfp_prog *nfp_prog, enum shf_sc sc, 382d9ae7f2bSJakub Kicinski u8 areg, u8 bmask, u8 breg, u8 shift, bool imm8, 383995e101fSJakub Kicinski bool zero, bool swap, bool wr_both, 384995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 385d9ae7f2bSJakub Kicinski { 386d9ae7f2bSJakub Kicinski u64 insn; 387d9ae7f2bSJakub Kicinski 388d9ae7f2bSJakub Kicinski insn = OP_LDF_BASE | 389d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_A_SRC, areg) | 390d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_SC, sc) | 391d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_B_SRC, breg) | 392d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_I8, imm8) | 393d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_SW, swap) | 394d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_ZF, zero) | 395d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_BMASK, bmask) | 396d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_SHF, shift) | 397995e101fSJakub Kicinski FIELD_PREP(OP_LDF_WR_AB, wr_both) | 398995e101fSJakub Kicinski FIELD_PREP(OP_LDF_SRC_LMEXTN, src_lmextn) | 399995e101fSJakub Kicinski FIELD_PREP(OP_LDF_DST_LMEXTN, dst_lmextn); 400d9ae7f2bSJakub Kicinski 401d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 402d9ae7f2bSJakub Kicinski } 403d9ae7f2bSJakub Kicinski 404d9ae7f2bSJakub Kicinski static void 405d9ae7f2bSJakub Kicinski emit_ld_field_any(struct nfp_prog *nfp_prog, enum shf_sc sc, u8 shift, 406b3f868dfSJakub Kicinski swreg dst, u8 bmask, swreg src, bool zero) 407d9ae7f2bSJakub Kicinski { 408d9ae7f2bSJakub Kicinski struct nfp_insn_re_regs reg; 409d9ae7f2bSJakub Kicinski int err; 410d9ae7f2bSJakub Kicinski 411d9ae7f2bSJakub Kicinski err = swreg_to_restricted(reg_none(), dst, src, ®, true); 412d9ae7f2bSJakub Kicinski if (err) { 413d9ae7f2bSJakub Kicinski nfp_prog->error = err; 414d9ae7f2bSJakub Kicinski return; 415d9ae7f2bSJakub Kicinski } 416d9ae7f2bSJakub Kicinski 417d9ae7f2bSJakub Kicinski __emit_ld_field(nfp_prog, sc, reg.areg, bmask, reg.breg, shift, 418995e101fSJakub Kicinski reg.i8, zero, reg.swap, reg.wr_both, 419995e101fSJakub Kicinski reg.dst_lmextn, reg.src_lmextn); 420d9ae7f2bSJakub Kicinski } 421d9ae7f2bSJakub Kicinski 422d9ae7f2bSJakub Kicinski static void 423b3f868dfSJakub Kicinski emit_ld_field(struct nfp_prog *nfp_prog, swreg dst, u8 bmask, swreg src, 424d9ae7f2bSJakub Kicinski enum shf_sc sc, u8 shift) 425d9ae7f2bSJakub Kicinski { 426d9ae7f2bSJakub Kicinski emit_ld_field_any(nfp_prog, sc, shift, dst, bmask, src, false); 427d9ae7f2bSJakub Kicinski } 428d9ae7f2bSJakub Kicinski 429d9ae7f2bSJakub Kicinski /* --- Wrappers --- */ 430d9ae7f2bSJakub Kicinski static bool pack_immed(u32 imm, u16 *val, enum immed_shift *shift) 431d9ae7f2bSJakub Kicinski { 432d9ae7f2bSJakub Kicinski if (!(imm & 0xffff0000)) { 433d9ae7f2bSJakub Kicinski *val = imm; 434d9ae7f2bSJakub Kicinski *shift = IMMED_SHIFT_0B; 435d9ae7f2bSJakub Kicinski } else if (!(imm & 0xff0000ff)) { 436d9ae7f2bSJakub Kicinski *val = imm >> 8; 437d9ae7f2bSJakub Kicinski *shift = IMMED_SHIFT_1B; 438d9ae7f2bSJakub Kicinski } else if (!(imm & 0x0000ffff)) { 439d9ae7f2bSJakub Kicinski *val = imm >> 16; 440d9ae7f2bSJakub Kicinski *shift = IMMED_SHIFT_2B; 441d9ae7f2bSJakub Kicinski } else { 442d9ae7f2bSJakub Kicinski return false; 443d9ae7f2bSJakub Kicinski } 444d9ae7f2bSJakub Kicinski 445d9ae7f2bSJakub Kicinski return true; 446d9ae7f2bSJakub Kicinski } 447d9ae7f2bSJakub Kicinski 448b3f868dfSJakub Kicinski static void wrp_immed(struct nfp_prog *nfp_prog, swreg dst, u32 imm) 449d9ae7f2bSJakub Kicinski { 450d9ae7f2bSJakub Kicinski enum immed_shift shift; 451d9ae7f2bSJakub Kicinski u16 val; 452d9ae7f2bSJakub Kicinski 453d9ae7f2bSJakub Kicinski if (pack_immed(imm, &val, &shift)) { 454d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, val, IMMED_WIDTH_ALL, false, shift); 455d9ae7f2bSJakub Kicinski } else if (pack_immed(~imm, &val, &shift)) { 456d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, val, IMMED_WIDTH_ALL, true, shift); 457d9ae7f2bSJakub Kicinski } else { 458d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, imm & 0xffff, IMMED_WIDTH_ALL, 459d9ae7f2bSJakub Kicinski false, IMMED_SHIFT_0B); 460d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, imm >> 16, IMMED_WIDTH_WORD, 461d9ae7f2bSJakub Kicinski false, IMMED_SHIFT_2B); 462d9ae7f2bSJakub Kicinski } 463d9ae7f2bSJakub Kicinski } 464d9ae7f2bSJakub Kicinski 465d9ae7f2bSJakub Kicinski /* ur_load_imm_any() - encode immediate or use tmp register (unrestricted) 466d9ae7f2bSJakub Kicinski * If the @imm is small enough encode it directly in operand and return 467d9ae7f2bSJakub Kicinski * otherwise load @imm to a spare register and return its encoding. 468d9ae7f2bSJakub Kicinski */ 469b3f868dfSJakub Kicinski static swreg ur_load_imm_any(struct nfp_prog *nfp_prog, u32 imm, swreg tmp_reg) 470d9ae7f2bSJakub Kicinski { 471d9ae7f2bSJakub Kicinski if (FIELD_FIT(UR_REG_IMM_MAX, imm)) 472d9ae7f2bSJakub Kicinski return reg_imm(imm); 473d9ae7f2bSJakub Kicinski 474d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, tmp_reg, imm); 475d9ae7f2bSJakub Kicinski return tmp_reg; 476d9ae7f2bSJakub Kicinski } 477d9ae7f2bSJakub Kicinski 478d9ae7f2bSJakub Kicinski /* re_load_imm_any() - encode immediate or use tmp register (restricted) 479d9ae7f2bSJakub Kicinski * If the @imm is small enough encode it directly in operand and return 480d9ae7f2bSJakub Kicinski * otherwise load @imm to a spare register and return its encoding. 481d9ae7f2bSJakub Kicinski */ 482b3f868dfSJakub Kicinski static swreg re_load_imm_any(struct nfp_prog *nfp_prog, u32 imm, swreg tmp_reg) 483d9ae7f2bSJakub Kicinski { 484d9ae7f2bSJakub Kicinski if (FIELD_FIT(RE_REG_IMM_MAX, imm)) 485d9ae7f2bSJakub Kicinski return reg_imm(imm); 486d9ae7f2bSJakub Kicinski 487d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, tmp_reg, imm); 488d9ae7f2bSJakub Kicinski return tmp_reg; 489d9ae7f2bSJakub Kicinski } 490d9ae7f2bSJakub Kicinski 491d9ae7f2bSJakub Kicinski static void 492d9ae7f2bSJakub Kicinski wrp_br_special(struct nfp_prog *nfp_prog, enum br_mask mask, 493d9ae7f2bSJakub Kicinski enum br_special special) 494d9ae7f2bSJakub Kicinski { 495d9ae7f2bSJakub Kicinski emit_br(nfp_prog, mask, 0, 0); 496d9ae7f2bSJakub Kicinski 497d9ae7f2bSJakub Kicinski nfp_prog->prog[nfp_prog->prog_len - 1] |= 498d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_SPECIAL, special); 499d9ae7f2bSJakub Kicinski } 500d9ae7f2bSJakub Kicinski 501d9ae7f2bSJakub Kicinski static void wrp_reg_mov(struct nfp_prog *nfp_prog, u16 dst, u16 src) 502d9ae7f2bSJakub Kicinski { 503d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_none(), ALU_OP_NONE, reg_b(src)); 504d9ae7f2bSJakub Kicinski } 505d9ae7f2bSJakub Kicinski 506d9ae7f2bSJakub Kicinski static int 507d9ae7f2bSJakub Kicinski construct_data_ind_ld(struct nfp_prog *nfp_prog, u16 offset, 508d9ae7f2bSJakub Kicinski u16 src, bool src_valid, u8 size) 509d9ae7f2bSJakub Kicinski { 510d9ae7f2bSJakub Kicinski unsigned int i; 511d9ae7f2bSJakub Kicinski u16 shift, sz; 512b3f868dfSJakub Kicinski swreg tmp_reg; 513d9ae7f2bSJakub Kicinski 514d9ae7f2bSJakub Kicinski /* We load the value from the address indicated in @offset and then 515d9ae7f2bSJakub Kicinski * shift out the data we don't need. Note: this is big endian! 516d9ae7f2bSJakub Kicinski */ 517d9ae7f2bSJakub Kicinski sz = size < 4 ? 4 : size; 518d9ae7f2bSJakub Kicinski shift = size < 4 ? 4 - size : 0; 519d9ae7f2bSJakub Kicinski 520d9ae7f2bSJakub Kicinski if (src_valid) { 521d9ae7f2bSJakub Kicinski /* Calculate the true offset (src_reg + imm) */ 522d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, offset, imm_b(nfp_prog)); 523d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_both(nfp_prog), 524d9ae7f2bSJakub Kicinski reg_a(src), ALU_OP_ADD, tmp_reg); 525d9ae7f2bSJakub Kicinski /* Check packet length (size guaranteed to fit b/c it's u8) */ 526d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_a(nfp_prog), 527d9ae7f2bSJakub Kicinski imm_a(nfp_prog), ALU_OP_ADD, reg_imm(size)); 528d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 52918e53b6cSJakub Kicinski plen_reg(nfp_prog), ALU_OP_SUB, imm_a(nfp_prog)); 530d9ae7f2bSJakub Kicinski wrp_br_special(nfp_prog, BR_BLO, OP_BR_GO_ABORT); 531d9ae7f2bSJakub Kicinski /* Load data */ 532d9ae7f2bSJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_READ8, CMD_MODE_32b, 0, 53318e53b6cSJakub Kicinski pptr_reg(nfp_prog), imm_b(nfp_prog), sz - 1, true); 534d9ae7f2bSJakub Kicinski } else { 535d9ae7f2bSJakub Kicinski /* Check packet length */ 536d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, offset + size, 537d9ae7f2bSJakub Kicinski imm_a(nfp_prog)); 538d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 53918e53b6cSJakub Kicinski plen_reg(nfp_prog), ALU_OP_SUB, tmp_reg); 540d9ae7f2bSJakub Kicinski wrp_br_special(nfp_prog, BR_BLO, OP_BR_GO_ABORT); 541d9ae7f2bSJakub Kicinski /* Load data */ 542d9ae7f2bSJakub Kicinski tmp_reg = re_load_imm_any(nfp_prog, offset, imm_b(nfp_prog)); 543d9ae7f2bSJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_READ8, CMD_MODE_32b, 0, 54418e53b6cSJakub Kicinski pptr_reg(nfp_prog), tmp_reg, sz - 1, true); 545d9ae7f2bSJakub Kicinski } 546d9ae7f2bSJakub Kicinski 547d9ae7f2bSJakub Kicinski i = 0; 548d9ae7f2bSJakub Kicinski if (shift) 549d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_both(0), reg_none(), SHF_OP_NONE, 550d9ae7f2bSJakub Kicinski reg_xfer(0), SHF_SC_R_SHF, shift * 8); 551d9ae7f2bSJakub Kicinski else 552d9ae7f2bSJakub Kicinski for (; i * 4 < size; i++) 553d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(i), 554d9ae7f2bSJakub Kicinski reg_none(), ALU_OP_NONE, reg_xfer(i)); 555d9ae7f2bSJakub Kicinski 556d9ae7f2bSJakub Kicinski if (i < 2) 557d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(1), 0); 558d9ae7f2bSJakub Kicinski 559d9ae7f2bSJakub Kicinski return 0; 560d9ae7f2bSJakub Kicinski } 561d9ae7f2bSJakub Kicinski 562d9ae7f2bSJakub Kicinski static int construct_data_ld(struct nfp_prog *nfp_prog, u16 offset, u8 size) 563d9ae7f2bSJakub Kicinski { 564d9ae7f2bSJakub Kicinski return construct_data_ind_ld(nfp_prog, offset, 0, false, size); 565d9ae7f2bSJakub Kicinski } 566d9ae7f2bSJakub Kicinski 567d9ae7f2bSJakub Kicinski static void 568d9ae7f2bSJakub Kicinski wrp_alu_imm(struct nfp_prog *nfp_prog, u8 dst, enum alu_op alu_op, u32 imm) 569d9ae7f2bSJakub Kicinski { 570b3f868dfSJakub Kicinski swreg tmp_reg; 571d9ae7f2bSJakub Kicinski 572d9ae7f2bSJakub Kicinski if (alu_op == ALU_OP_AND) { 573d9ae7f2bSJakub Kicinski if (!imm) 574d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), 0); 575d9ae7f2bSJakub Kicinski if (!imm || !~imm) 576d9ae7f2bSJakub Kicinski return; 577d9ae7f2bSJakub Kicinski } 578d9ae7f2bSJakub Kicinski if (alu_op == ALU_OP_OR) { 579d9ae7f2bSJakub Kicinski if (!~imm) 580d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), ~0U); 581d9ae7f2bSJakub Kicinski if (!imm || !~imm) 582d9ae7f2bSJakub Kicinski return; 583d9ae7f2bSJakub Kicinski } 584d9ae7f2bSJakub Kicinski if (alu_op == ALU_OP_XOR) { 585d9ae7f2bSJakub Kicinski if (!~imm) 586d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_none(), 587d9ae7f2bSJakub Kicinski ALU_OP_NEG, reg_b(dst)); 588d9ae7f2bSJakub Kicinski if (!imm || !~imm) 589d9ae7f2bSJakub Kicinski return; 590d9ae7f2bSJakub Kicinski } 591d9ae7f2bSJakub Kicinski 592d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm, imm_b(nfp_prog)); 593d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_a(dst), alu_op, tmp_reg); 594d9ae7f2bSJakub Kicinski } 595d9ae7f2bSJakub Kicinski 596d9ae7f2bSJakub Kicinski static int 597d9ae7f2bSJakub Kicinski wrp_alu64_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 598d9ae7f2bSJakub Kicinski enum alu_op alu_op, bool skip) 599d9ae7f2bSJakub Kicinski { 600d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 601d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 602d9ae7f2bSJakub Kicinski 603d9ae7f2bSJakub Kicinski if (skip) { 604d9ae7f2bSJakub Kicinski meta->skip = true; 605d9ae7f2bSJakub Kicinski return 0; 606d9ae7f2bSJakub Kicinski } 607d9ae7f2bSJakub Kicinski 608d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, alu_op, imm & ~0U); 609d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2 + 1, alu_op, imm >> 32); 610d9ae7f2bSJakub Kicinski 611d9ae7f2bSJakub Kicinski return 0; 612d9ae7f2bSJakub Kicinski } 613d9ae7f2bSJakub Kicinski 614d9ae7f2bSJakub Kicinski static int 615d9ae7f2bSJakub Kicinski wrp_alu64_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 616d9ae7f2bSJakub Kicinski enum alu_op alu_op) 617d9ae7f2bSJakub Kicinski { 618d9ae7f2bSJakub Kicinski u8 dst = meta->insn.dst_reg * 2, src = meta->insn.src_reg * 2; 619d9ae7f2bSJakub Kicinski 620d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_a(dst), alu_op, reg_b(src)); 621d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst + 1), 622d9ae7f2bSJakub Kicinski reg_a(dst + 1), alu_op, reg_b(src + 1)); 623d9ae7f2bSJakub Kicinski 624d9ae7f2bSJakub Kicinski return 0; 625d9ae7f2bSJakub Kicinski } 626d9ae7f2bSJakub Kicinski 627d9ae7f2bSJakub Kicinski static int 628d9ae7f2bSJakub Kicinski wrp_alu32_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 629d9ae7f2bSJakub Kicinski enum alu_op alu_op, bool skip) 630d9ae7f2bSJakub Kicinski { 631d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 632d9ae7f2bSJakub Kicinski 633d9ae7f2bSJakub Kicinski if (skip) { 634d9ae7f2bSJakub Kicinski meta->skip = true; 635d9ae7f2bSJakub Kicinski return 0; 636d9ae7f2bSJakub Kicinski } 637d9ae7f2bSJakub Kicinski 638d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, alu_op, insn->imm); 639d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 640d9ae7f2bSJakub Kicinski 641d9ae7f2bSJakub Kicinski return 0; 642d9ae7f2bSJakub Kicinski } 643d9ae7f2bSJakub Kicinski 644d9ae7f2bSJakub Kicinski static int 645d9ae7f2bSJakub Kicinski wrp_alu32_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 646d9ae7f2bSJakub Kicinski enum alu_op alu_op) 647d9ae7f2bSJakub Kicinski { 648d9ae7f2bSJakub Kicinski u8 dst = meta->insn.dst_reg * 2, src = meta->insn.src_reg * 2; 649d9ae7f2bSJakub Kicinski 650d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_a(dst), alu_op, reg_b(src)); 651d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 652d9ae7f2bSJakub Kicinski 653d9ae7f2bSJakub Kicinski return 0; 654d9ae7f2bSJakub Kicinski } 655d9ae7f2bSJakub Kicinski 656d9ae7f2bSJakub Kicinski static void 657d9ae7f2bSJakub Kicinski wrp_test_reg_one(struct nfp_prog *nfp_prog, u8 dst, enum alu_op alu_op, u8 src, 658d9ae7f2bSJakub Kicinski enum br_mask br_mask, u16 off) 659d9ae7f2bSJakub Kicinski { 660d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(dst), alu_op, reg_b(src)); 661d9ae7f2bSJakub Kicinski emit_br(nfp_prog, br_mask, off, 0); 662d9ae7f2bSJakub Kicinski } 663d9ae7f2bSJakub Kicinski 664d9ae7f2bSJakub Kicinski static int 665d9ae7f2bSJakub Kicinski wrp_test_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 666d9ae7f2bSJakub Kicinski enum alu_op alu_op, enum br_mask br_mask) 667d9ae7f2bSJakub Kicinski { 668d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 669d9ae7f2bSJakub Kicinski 670d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 671d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 672d9ae7f2bSJakub Kicinski 673d9ae7f2bSJakub Kicinski wrp_test_reg_one(nfp_prog, insn->dst_reg * 2, alu_op, 674d9ae7f2bSJakub Kicinski insn->src_reg * 2, br_mask, insn->off); 675d9ae7f2bSJakub Kicinski wrp_test_reg_one(nfp_prog, insn->dst_reg * 2 + 1, alu_op, 676d9ae7f2bSJakub Kicinski insn->src_reg * 2 + 1, br_mask, insn->off); 677d9ae7f2bSJakub Kicinski 678d9ae7f2bSJakub Kicinski return 0; 679d9ae7f2bSJakub Kicinski } 680d9ae7f2bSJakub Kicinski 681d9ae7f2bSJakub Kicinski static int 682d9ae7f2bSJakub Kicinski wrp_cmp_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 683d9ae7f2bSJakub Kicinski enum br_mask br_mask, bool swap) 684d9ae7f2bSJakub Kicinski { 685d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 686d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 687d9ae7f2bSJakub Kicinski u8 reg = insn->dst_reg * 2; 688b3f868dfSJakub Kicinski swreg tmp_reg; 689d9ae7f2bSJakub Kicinski 690d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 691d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 692d9ae7f2bSJakub Kicinski 693d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 694d9ae7f2bSJakub Kicinski if (!swap) 695d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(reg), ALU_OP_SUB, tmp_reg); 696d9ae7f2bSJakub Kicinski else 697d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), tmp_reg, ALU_OP_SUB, reg_a(reg)); 698d9ae7f2bSJakub Kicinski 699d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 700d9ae7f2bSJakub Kicinski if (!swap) 701d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 702d9ae7f2bSJakub Kicinski reg_a(reg + 1), ALU_OP_SUB_C, tmp_reg); 703d9ae7f2bSJakub Kicinski else 704d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 705d9ae7f2bSJakub Kicinski tmp_reg, ALU_OP_SUB_C, reg_a(reg + 1)); 706d9ae7f2bSJakub Kicinski 707d9ae7f2bSJakub Kicinski emit_br(nfp_prog, br_mask, insn->off, 0); 708d9ae7f2bSJakub Kicinski 709d9ae7f2bSJakub Kicinski return 0; 710d9ae7f2bSJakub Kicinski } 711d9ae7f2bSJakub Kicinski 712d9ae7f2bSJakub Kicinski static int 713d9ae7f2bSJakub Kicinski wrp_cmp_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 714d9ae7f2bSJakub Kicinski enum br_mask br_mask, bool swap) 715d9ae7f2bSJakub Kicinski { 716d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 717d9ae7f2bSJakub Kicinski u8 areg = insn->src_reg * 2, breg = insn->dst_reg * 2; 718d9ae7f2bSJakub Kicinski 719d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 720d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 721d9ae7f2bSJakub Kicinski 722d9ae7f2bSJakub Kicinski if (swap) { 723d9ae7f2bSJakub Kicinski areg ^= breg; 724d9ae7f2bSJakub Kicinski breg ^= areg; 725d9ae7f2bSJakub Kicinski areg ^= breg; 726d9ae7f2bSJakub Kicinski } 727d9ae7f2bSJakub Kicinski 728d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(areg), ALU_OP_SUB, reg_b(breg)); 729d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 730d9ae7f2bSJakub Kicinski reg_a(areg + 1), ALU_OP_SUB_C, reg_b(breg + 1)); 731d9ae7f2bSJakub Kicinski emit_br(nfp_prog, br_mask, insn->off, 0); 732d9ae7f2bSJakub Kicinski 733d9ae7f2bSJakub Kicinski return 0; 734d9ae7f2bSJakub Kicinski } 735d9ae7f2bSJakub Kicinski 736d9ae7f2bSJakub Kicinski /* --- Callbacks --- */ 737d9ae7f2bSJakub Kicinski static int mov_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 738d9ae7f2bSJakub Kicinski { 739d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 740d9ae7f2bSJakub Kicinski 741d9ae7f2bSJakub Kicinski wrp_reg_mov(nfp_prog, insn->dst_reg * 2, insn->src_reg * 2); 742d9ae7f2bSJakub Kicinski wrp_reg_mov(nfp_prog, insn->dst_reg * 2 + 1, insn->src_reg * 2 + 1); 743d9ae7f2bSJakub Kicinski 744d9ae7f2bSJakub Kicinski return 0; 745d9ae7f2bSJakub Kicinski } 746d9ae7f2bSJakub Kicinski 747d9ae7f2bSJakub Kicinski static int mov_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 748d9ae7f2bSJakub Kicinski { 749d9ae7f2bSJakub Kicinski u64 imm = meta->insn.imm; /* sign extend */ 750d9ae7f2bSJakub Kicinski 751d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2), imm & ~0U); 752d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), imm >> 32); 753d9ae7f2bSJakub Kicinski 754d9ae7f2bSJakub Kicinski return 0; 755d9ae7f2bSJakub Kicinski } 756d9ae7f2bSJakub Kicinski 757d9ae7f2bSJakub Kicinski static int xor_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 758d9ae7f2bSJakub Kicinski { 759d9ae7f2bSJakub Kicinski return wrp_alu64_reg(nfp_prog, meta, ALU_OP_XOR); 760d9ae7f2bSJakub Kicinski } 761d9ae7f2bSJakub Kicinski 762d9ae7f2bSJakub Kicinski static int xor_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 763d9ae7f2bSJakub Kicinski { 764d9ae7f2bSJakub Kicinski return wrp_alu64_imm(nfp_prog, meta, ALU_OP_XOR, !meta->insn.imm); 765d9ae7f2bSJakub Kicinski } 766d9ae7f2bSJakub Kicinski 767d9ae7f2bSJakub Kicinski static int and_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 768d9ae7f2bSJakub Kicinski { 769d9ae7f2bSJakub Kicinski return wrp_alu64_reg(nfp_prog, meta, ALU_OP_AND); 770d9ae7f2bSJakub Kicinski } 771d9ae7f2bSJakub Kicinski 772d9ae7f2bSJakub Kicinski static int and_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 773d9ae7f2bSJakub Kicinski { 774d9ae7f2bSJakub Kicinski return wrp_alu64_imm(nfp_prog, meta, ALU_OP_AND, !~meta->insn.imm); 775d9ae7f2bSJakub Kicinski } 776d9ae7f2bSJakub Kicinski 777d9ae7f2bSJakub Kicinski static int or_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 778d9ae7f2bSJakub Kicinski { 779d9ae7f2bSJakub Kicinski return wrp_alu64_reg(nfp_prog, meta, ALU_OP_OR); 780d9ae7f2bSJakub Kicinski } 781d9ae7f2bSJakub Kicinski 782d9ae7f2bSJakub Kicinski static int or_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 783d9ae7f2bSJakub Kicinski { 784d9ae7f2bSJakub Kicinski return wrp_alu64_imm(nfp_prog, meta, ALU_OP_OR, !meta->insn.imm); 785d9ae7f2bSJakub Kicinski } 786d9ae7f2bSJakub Kicinski 787d9ae7f2bSJakub Kicinski static int add_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 788d9ae7f2bSJakub Kicinski { 789d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 790d9ae7f2bSJakub Kicinski 791d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2), 792d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_ADD, 793d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2)); 794d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 795d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_ADD_C, 796d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2 + 1)); 797d9ae7f2bSJakub Kicinski 798d9ae7f2bSJakub Kicinski return 0; 799d9ae7f2bSJakub Kicinski } 800d9ae7f2bSJakub Kicinski 801d9ae7f2bSJakub Kicinski static int add_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 802d9ae7f2bSJakub Kicinski { 803d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 804d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 805d9ae7f2bSJakub Kicinski 806d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, ALU_OP_ADD, imm & ~0U); 807d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2 + 1, ALU_OP_ADD_C, imm >> 32); 808d9ae7f2bSJakub Kicinski 809d9ae7f2bSJakub Kicinski return 0; 810d9ae7f2bSJakub Kicinski } 811d9ae7f2bSJakub Kicinski 812d9ae7f2bSJakub Kicinski static int sub_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 813d9ae7f2bSJakub Kicinski { 814d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 815d9ae7f2bSJakub Kicinski 816d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2), 817d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_SUB, 818d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2)); 819d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 820d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_SUB_C, 821d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2 + 1)); 822d9ae7f2bSJakub Kicinski 823d9ae7f2bSJakub Kicinski return 0; 824d9ae7f2bSJakub Kicinski } 825d9ae7f2bSJakub Kicinski 826d9ae7f2bSJakub Kicinski static int sub_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 827d9ae7f2bSJakub Kicinski { 828d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 829d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 830d9ae7f2bSJakub Kicinski 831d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, ALU_OP_SUB, imm & ~0U); 832d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2 + 1, ALU_OP_SUB_C, imm >> 32); 833d9ae7f2bSJakub Kicinski 834d9ae7f2bSJakub Kicinski return 0; 835d9ae7f2bSJakub Kicinski } 836d9ae7f2bSJakub Kicinski 837d9ae7f2bSJakub Kicinski static int shl_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 838d9ae7f2bSJakub Kicinski { 839d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 8403cae1319SJakub Kicinski u8 dst = insn->dst_reg * 2; 841d9ae7f2bSJakub Kicinski 8423cae1319SJakub Kicinski if (insn->imm < 32) { 8433cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst + 1), 8443cae1319SJakub Kicinski reg_a(dst + 1), SHF_OP_NONE, reg_b(dst), 8453cae1319SJakub Kicinski SHF_SC_R_DSHF, 32 - insn->imm); 8463cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst), 8473cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst), 8483cae1319SJakub Kicinski SHF_SC_L_SHF, insn->imm); 8493cae1319SJakub Kicinski } else if (insn->imm == 32) { 8503cae1319SJakub Kicinski wrp_reg_mov(nfp_prog, dst + 1, dst); 8513cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), 0); 8523cae1319SJakub Kicinski } else if (insn->imm > 32) { 8533cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst + 1), 8543cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst), 8553cae1319SJakub Kicinski SHF_SC_L_SHF, insn->imm - 32); 8563cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), 0); 8573cae1319SJakub Kicinski } 858d9ae7f2bSJakub Kicinski 859d9ae7f2bSJakub Kicinski return 0; 860d9ae7f2bSJakub Kicinski } 861d9ae7f2bSJakub Kicinski 862d9ae7f2bSJakub Kicinski static int shr_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 863d9ae7f2bSJakub Kicinski { 864d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 8653cae1319SJakub Kicinski u8 dst = insn->dst_reg * 2; 866d9ae7f2bSJakub Kicinski 8673cae1319SJakub Kicinski if (insn->imm < 32) { 8683cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst), 8693cae1319SJakub Kicinski reg_a(dst + 1), SHF_OP_NONE, reg_b(dst), 8703cae1319SJakub Kicinski SHF_SC_R_DSHF, insn->imm); 8713cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst + 1), 8723cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst + 1), 8733cae1319SJakub Kicinski SHF_SC_R_SHF, insn->imm); 8743cae1319SJakub Kicinski } else if (insn->imm == 32) { 8753cae1319SJakub Kicinski wrp_reg_mov(nfp_prog, dst, dst + 1); 8763cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst + 1), 0); 8773cae1319SJakub Kicinski } else if (insn->imm > 32) { 8783cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst), 8793cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst + 1), 8803cae1319SJakub Kicinski SHF_SC_R_SHF, insn->imm - 32); 8813cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst + 1), 0); 8823cae1319SJakub Kicinski } 883d9ae7f2bSJakub Kicinski 884d9ae7f2bSJakub Kicinski return 0; 885d9ae7f2bSJakub Kicinski } 886d9ae7f2bSJakub Kicinski 887d9ae7f2bSJakub Kicinski static int mov_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 888d9ae7f2bSJakub Kicinski { 889d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 890d9ae7f2bSJakub Kicinski 891d9ae7f2bSJakub Kicinski wrp_reg_mov(nfp_prog, insn->dst_reg * 2, insn->src_reg * 2); 892d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 893d9ae7f2bSJakub Kicinski 894d9ae7f2bSJakub Kicinski return 0; 895d9ae7f2bSJakub Kicinski } 896d9ae7f2bSJakub Kicinski 897d9ae7f2bSJakub Kicinski static int mov_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 898d9ae7f2bSJakub Kicinski { 899d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 900d9ae7f2bSJakub Kicinski 901d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2), insn->imm); 902d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 903d9ae7f2bSJakub Kicinski 904d9ae7f2bSJakub Kicinski return 0; 905d9ae7f2bSJakub Kicinski } 906d9ae7f2bSJakub Kicinski 907d9ae7f2bSJakub Kicinski static int xor_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 908d9ae7f2bSJakub Kicinski { 909d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_XOR); 910d9ae7f2bSJakub Kicinski } 911d9ae7f2bSJakub Kicinski 912d9ae7f2bSJakub Kicinski static int xor_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 913d9ae7f2bSJakub Kicinski { 914d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_XOR, !~meta->insn.imm); 915d9ae7f2bSJakub Kicinski } 916d9ae7f2bSJakub Kicinski 917d9ae7f2bSJakub Kicinski static int and_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 918d9ae7f2bSJakub Kicinski { 919d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_AND); 920d9ae7f2bSJakub Kicinski } 921d9ae7f2bSJakub Kicinski 922d9ae7f2bSJakub Kicinski static int and_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 923d9ae7f2bSJakub Kicinski { 924d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_AND, !~meta->insn.imm); 925d9ae7f2bSJakub Kicinski } 926d9ae7f2bSJakub Kicinski 927d9ae7f2bSJakub Kicinski static int or_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 928d9ae7f2bSJakub Kicinski { 929d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_OR); 930d9ae7f2bSJakub Kicinski } 931d9ae7f2bSJakub Kicinski 932d9ae7f2bSJakub Kicinski static int or_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 933d9ae7f2bSJakub Kicinski { 934d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_OR, !meta->insn.imm); 935d9ae7f2bSJakub Kicinski } 936d9ae7f2bSJakub Kicinski 937d9ae7f2bSJakub Kicinski static int add_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 938d9ae7f2bSJakub Kicinski { 939d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_ADD); 940d9ae7f2bSJakub Kicinski } 941d9ae7f2bSJakub Kicinski 942d9ae7f2bSJakub Kicinski static int add_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 943d9ae7f2bSJakub Kicinski { 944d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_ADD, !meta->insn.imm); 945d9ae7f2bSJakub Kicinski } 946d9ae7f2bSJakub Kicinski 947d9ae7f2bSJakub Kicinski static int sub_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 948d9ae7f2bSJakub Kicinski { 949d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_SUB); 950d9ae7f2bSJakub Kicinski } 951d9ae7f2bSJakub Kicinski 952d9ae7f2bSJakub Kicinski static int sub_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 953d9ae7f2bSJakub Kicinski { 954d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_SUB, !meta->insn.imm); 955d9ae7f2bSJakub Kicinski } 956d9ae7f2bSJakub Kicinski 957d9ae7f2bSJakub Kicinski static int shl_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 958d9ae7f2bSJakub Kicinski { 959d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 960d9ae7f2bSJakub Kicinski 961d9ae7f2bSJakub Kicinski if (!insn->imm) 962d9ae7f2bSJakub Kicinski return 1; /* TODO: zero shift means indirect */ 963d9ae7f2bSJakub Kicinski 964d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_both(insn->dst_reg * 2), 965d9ae7f2bSJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(insn->dst_reg * 2), 966d9ae7f2bSJakub Kicinski SHF_SC_L_SHF, insn->imm); 967d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 968d9ae7f2bSJakub Kicinski 969d9ae7f2bSJakub Kicinski return 0; 970d9ae7f2bSJakub Kicinski } 971d9ae7f2bSJakub Kicinski 972d9ae7f2bSJakub Kicinski static int imm_ld8_part2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 973d9ae7f2bSJakub Kicinski { 974d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(nfp_meta_prev(meta)->insn.dst_reg * 2 + 1), 975d9ae7f2bSJakub Kicinski meta->insn.imm); 976d9ae7f2bSJakub Kicinski 977d9ae7f2bSJakub Kicinski return 0; 978d9ae7f2bSJakub Kicinski } 979d9ae7f2bSJakub Kicinski 980d9ae7f2bSJakub Kicinski static int imm_ld8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 981d9ae7f2bSJakub Kicinski { 982d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 983d9ae7f2bSJakub Kicinski 984d9ae7f2bSJakub Kicinski meta->double_cb = imm_ld8_part2; 985d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2), insn->imm); 986d9ae7f2bSJakub Kicinski 987d9ae7f2bSJakub Kicinski return 0; 988d9ae7f2bSJakub Kicinski } 989d9ae7f2bSJakub Kicinski 990d9ae7f2bSJakub Kicinski static int data_ld1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 991d9ae7f2bSJakub Kicinski { 992d9ae7f2bSJakub Kicinski return construct_data_ld(nfp_prog, meta->insn.imm, 1); 993d9ae7f2bSJakub Kicinski } 994d9ae7f2bSJakub Kicinski 995d9ae7f2bSJakub Kicinski static int data_ld2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 996d9ae7f2bSJakub Kicinski { 997d9ae7f2bSJakub Kicinski return construct_data_ld(nfp_prog, meta->insn.imm, 2); 998d9ae7f2bSJakub Kicinski } 999d9ae7f2bSJakub Kicinski 1000d9ae7f2bSJakub Kicinski static int data_ld4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1001d9ae7f2bSJakub Kicinski { 1002d9ae7f2bSJakub Kicinski return construct_data_ld(nfp_prog, meta->insn.imm, 4); 1003d9ae7f2bSJakub Kicinski } 1004d9ae7f2bSJakub Kicinski 1005d9ae7f2bSJakub Kicinski static int data_ind_ld1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1006d9ae7f2bSJakub Kicinski { 1007d9ae7f2bSJakub Kicinski return construct_data_ind_ld(nfp_prog, meta->insn.imm, 1008d9ae7f2bSJakub Kicinski meta->insn.src_reg * 2, true, 1); 1009d9ae7f2bSJakub Kicinski } 1010d9ae7f2bSJakub Kicinski 1011d9ae7f2bSJakub Kicinski static int data_ind_ld2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1012d9ae7f2bSJakub Kicinski { 1013d9ae7f2bSJakub Kicinski return construct_data_ind_ld(nfp_prog, meta->insn.imm, 1014d9ae7f2bSJakub Kicinski meta->insn.src_reg * 2, true, 2); 1015d9ae7f2bSJakub Kicinski } 1016d9ae7f2bSJakub Kicinski 1017d9ae7f2bSJakub Kicinski static int data_ind_ld4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1018d9ae7f2bSJakub Kicinski { 1019d9ae7f2bSJakub Kicinski return construct_data_ind_ld(nfp_prog, meta->insn.imm, 1020d9ae7f2bSJakub Kicinski meta->insn.src_reg * 2, true, 4); 1021d9ae7f2bSJakub Kicinski } 1022d9ae7f2bSJakub Kicinski 1023d9ae7f2bSJakub Kicinski static int mem_ldx4_skb(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1024d9ae7f2bSJakub Kicinski { 1025d9ae7f2bSJakub Kicinski if (meta->insn.off == offsetof(struct sk_buff, len)) 1026d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(meta->insn.dst_reg * 2), 102718e53b6cSJakub Kicinski reg_none(), ALU_OP_NONE, plen_reg(nfp_prog)); 1028d9ae7f2bSJakub Kicinski else 1029d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1030d9ae7f2bSJakub Kicinski 1031d9ae7f2bSJakub Kicinski return 0; 1032d9ae7f2bSJakub Kicinski } 1033d9ae7f2bSJakub Kicinski 1034d9ae7f2bSJakub Kicinski static int mem_ldx4_xdp(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1035d9ae7f2bSJakub Kicinski { 1036b3f868dfSJakub Kicinski swreg dst = reg_both(meta->insn.dst_reg * 2); 1037d9ae7f2bSJakub Kicinski 1038d9ae7f2bSJakub Kicinski if (meta->insn.off != offsetof(struct xdp_md, data) && 1039d9ae7f2bSJakub Kicinski meta->insn.off != offsetof(struct xdp_md, data_end)) 1040d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1041d9ae7f2bSJakub Kicinski 104218e53b6cSJakub Kicinski emit_alu(nfp_prog, dst, reg_none(), ALU_OP_NONE, pptr_reg(nfp_prog)); 1043d9ae7f2bSJakub Kicinski 1044d9ae7f2bSJakub Kicinski if (meta->insn.off == offsetof(struct xdp_md, data)) 1045d9ae7f2bSJakub Kicinski return 0; 1046d9ae7f2bSJakub Kicinski 104718e53b6cSJakub Kicinski emit_alu(nfp_prog, dst, dst, ALU_OP_ADD, plen_reg(nfp_prog)); 1048d9ae7f2bSJakub Kicinski 1049d9ae7f2bSJakub Kicinski return 0; 1050d9ae7f2bSJakub Kicinski } 1051d9ae7f2bSJakub Kicinski 1052d9ae7f2bSJakub Kicinski static int mem_ldx4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1053d9ae7f2bSJakub Kicinski { 1054d9ae7f2bSJakub Kicinski int ret; 1055d9ae7f2bSJakub Kicinski 1056d9ae7f2bSJakub Kicinski if (nfp_prog->act == NN_ACT_XDP) 1057d9ae7f2bSJakub Kicinski ret = mem_ldx4_xdp(nfp_prog, meta); 1058d9ae7f2bSJakub Kicinski else 1059d9ae7f2bSJakub Kicinski ret = mem_ldx4_skb(nfp_prog, meta); 1060d9ae7f2bSJakub Kicinski 1061d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 1062d9ae7f2bSJakub Kicinski 1063d9ae7f2bSJakub Kicinski return ret; 1064d9ae7f2bSJakub Kicinski } 1065d9ae7f2bSJakub Kicinski 1066d9ae7f2bSJakub Kicinski static int mem_stx4_skb(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1067d9ae7f2bSJakub Kicinski { 1068d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1069d9ae7f2bSJakub Kicinski } 1070d9ae7f2bSJakub Kicinski 1071d9ae7f2bSJakub Kicinski static int mem_stx4_xdp(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1072d9ae7f2bSJakub Kicinski { 1073d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1074d9ae7f2bSJakub Kicinski } 1075d9ae7f2bSJakub Kicinski 1076d9ae7f2bSJakub Kicinski static int mem_stx4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1077d9ae7f2bSJakub Kicinski { 1078d9ae7f2bSJakub Kicinski if (nfp_prog->act == NN_ACT_XDP) 1079d9ae7f2bSJakub Kicinski return mem_stx4_xdp(nfp_prog, meta); 1080d9ae7f2bSJakub Kicinski return mem_stx4_skb(nfp_prog, meta); 1081d9ae7f2bSJakub Kicinski } 1082d9ae7f2bSJakub Kicinski 1083d9ae7f2bSJakub Kicinski static int jump(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1084d9ae7f2bSJakub Kicinski { 1085d9ae7f2bSJakub Kicinski if (meta->insn.off < 0) /* TODO */ 1086d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1087d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_UNC, meta->insn.off, 0); 1088d9ae7f2bSJakub Kicinski 1089d9ae7f2bSJakub Kicinski return 0; 1090d9ae7f2bSJakub Kicinski } 1091d9ae7f2bSJakub Kicinski 1092d9ae7f2bSJakub Kicinski static int jeq_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1093d9ae7f2bSJakub Kicinski { 1094d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1095d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1096b3f868dfSJakub Kicinski swreg or1, or2, tmp_reg; 1097b3f868dfSJakub Kicinski 1098b3f868dfSJakub Kicinski or1 = reg_a(insn->dst_reg * 2); 1099b3f868dfSJakub Kicinski or2 = reg_b(insn->dst_reg * 2 + 1); 1100d9ae7f2bSJakub Kicinski 1101d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 1102d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1103d9ae7f2bSJakub Kicinski 1104d9ae7f2bSJakub Kicinski if (imm & ~0U) { 1105d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 1106d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_a(nfp_prog), 1107d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_XOR, tmp_reg); 1108d9ae7f2bSJakub Kicinski or1 = imm_a(nfp_prog); 1109d9ae7f2bSJakub Kicinski } 1110d9ae7f2bSJakub Kicinski 1111d9ae7f2bSJakub Kicinski if (imm >> 32) { 1112d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 1113d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), 1114d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_XOR, tmp_reg); 1115d9ae7f2bSJakub Kicinski or2 = imm_b(nfp_prog); 1116d9ae7f2bSJakub Kicinski } 1117d9ae7f2bSJakub Kicinski 1118d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), or1, ALU_OP_OR, or2); 1119d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BEQ, insn->off, 0); 1120d9ae7f2bSJakub Kicinski 1121d9ae7f2bSJakub Kicinski return 0; 1122d9ae7f2bSJakub Kicinski } 1123d9ae7f2bSJakub Kicinski 1124d9ae7f2bSJakub Kicinski static int jgt_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1125d9ae7f2bSJakub Kicinski { 1126d9ae7f2bSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BLO, false); 1127d9ae7f2bSJakub Kicinski } 1128d9ae7f2bSJakub Kicinski 1129d9ae7f2bSJakub Kicinski static int jge_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1130d9ae7f2bSJakub Kicinski { 1131d9ae7f2bSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BHS, true); 1132d9ae7f2bSJakub Kicinski } 1133d9ae7f2bSJakub Kicinski 11345dd294d4SDaniel Borkmann static int jlt_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 11355dd294d4SDaniel Borkmann { 11365dd294d4SDaniel Borkmann return wrp_cmp_imm(nfp_prog, meta, BR_BHS, false); 11375dd294d4SDaniel Borkmann } 11385dd294d4SDaniel Borkmann 11395dd294d4SDaniel Borkmann static int jle_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 11405dd294d4SDaniel Borkmann { 11415dd294d4SDaniel Borkmann return wrp_cmp_imm(nfp_prog, meta, BR_BLO, true); 11425dd294d4SDaniel Borkmann } 11435dd294d4SDaniel Borkmann 1144d9ae7f2bSJakub Kicinski static int jset_imm(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 */ 1148b3f868dfSJakub Kicinski swreg tmp_reg; 1149d9ae7f2bSJakub Kicinski 1150d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 1151d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1152d9ae7f2bSJakub Kicinski 1153d9ae7f2bSJakub Kicinski if (!imm) { 1154d9ae7f2bSJakub Kicinski meta->skip = true; 1155d9ae7f2bSJakub Kicinski return 0; 1156d9ae7f2bSJakub Kicinski } 1157d9ae7f2bSJakub Kicinski 1158d9ae7f2bSJakub Kicinski if (imm & ~0U) { 1159d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 1160d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1161d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_AND, tmp_reg); 1162d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1163d9ae7f2bSJakub Kicinski } 1164d9ae7f2bSJakub Kicinski 1165d9ae7f2bSJakub Kicinski if (imm >> 32) { 1166d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 1167d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1168d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_AND, tmp_reg); 1169d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1170d9ae7f2bSJakub Kicinski } 1171d9ae7f2bSJakub Kicinski 1172d9ae7f2bSJakub Kicinski return 0; 1173d9ae7f2bSJakub Kicinski } 1174d9ae7f2bSJakub Kicinski 1175d9ae7f2bSJakub Kicinski static int jne_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1176d9ae7f2bSJakub Kicinski { 1177d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1178d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1179b3f868dfSJakub Kicinski swreg tmp_reg; 1180d9ae7f2bSJakub Kicinski 1181d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 1182d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1183d9ae7f2bSJakub Kicinski 1184d9ae7f2bSJakub Kicinski if (!imm) { 1185d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(insn->dst_reg * 2), 1186d9ae7f2bSJakub Kicinski ALU_OP_OR, reg_b(insn->dst_reg * 2 + 1)); 1187d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1188d9ae7f2bSJakub Kicinski } 1189d9ae7f2bSJakub Kicinski 1190d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 1191d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1192d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_XOR, tmp_reg); 1193d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1194d9ae7f2bSJakub Kicinski 1195d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 1196d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1197d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_XOR, tmp_reg); 1198d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1199d9ae7f2bSJakub Kicinski 1200d9ae7f2bSJakub Kicinski return 0; 1201d9ae7f2bSJakub Kicinski } 1202d9ae7f2bSJakub Kicinski 1203d9ae7f2bSJakub Kicinski static int jeq_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1204d9ae7f2bSJakub Kicinski { 1205d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1206d9ae7f2bSJakub Kicinski 1207d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 1208d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1209d9ae7f2bSJakub Kicinski 1210d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_a(nfp_prog), reg_a(insn->dst_reg * 2), 1211d9ae7f2bSJakub Kicinski ALU_OP_XOR, reg_b(insn->src_reg * 2)); 1212d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), reg_a(insn->dst_reg * 2 + 1), 1213d9ae7f2bSJakub Kicinski ALU_OP_XOR, reg_b(insn->src_reg * 2 + 1)); 1214d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1215d9ae7f2bSJakub Kicinski imm_a(nfp_prog), ALU_OP_OR, imm_b(nfp_prog)); 1216d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BEQ, insn->off, 0); 1217d9ae7f2bSJakub Kicinski 1218d9ae7f2bSJakub Kicinski return 0; 1219d9ae7f2bSJakub Kicinski } 1220d9ae7f2bSJakub Kicinski 1221d9ae7f2bSJakub Kicinski static int jgt_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1222d9ae7f2bSJakub Kicinski { 1223d9ae7f2bSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BLO, false); 1224d9ae7f2bSJakub Kicinski } 1225d9ae7f2bSJakub Kicinski 1226d9ae7f2bSJakub Kicinski static int jge_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1227d9ae7f2bSJakub Kicinski { 1228d9ae7f2bSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BHS, true); 1229d9ae7f2bSJakub Kicinski } 1230d9ae7f2bSJakub Kicinski 12315dd294d4SDaniel Borkmann static int jlt_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 12325dd294d4SDaniel Borkmann { 12335dd294d4SDaniel Borkmann return wrp_cmp_reg(nfp_prog, meta, BR_BHS, false); 12345dd294d4SDaniel Borkmann } 12355dd294d4SDaniel Borkmann 12365dd294d4SDaniel Borkmann static int jle_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 12375dd294d4SDaniel Borkmann { 12385dd294d4SDaniel Borkmann return wrp_cmp_reg(nfp_prog, meta, BR_BLO, true); 12395dd294d4SDaniel Borkmann } 12405dd294d4SDaniel Borkmann 1241d9ae7f2bSJakub Kicinski static int jset_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1242d9ae7f2bSJakub Kicinski { 1243d9ae7f2bSJakub Kicinski return wrp_test_reg(nfp_prog, meta, ALU_OP_AND, BR_BNE); 1244d9ae7f2bSJakub Kicinski } 1245d9ae7f2bSJakub Kicinski 1246d9ae7f2bSJakub Kicinski static int jne_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1247d9ae7f2bSJakub Kicinski { 1248d9ae7f2bSJakub Kicinski return wrp_test_reg(nfp_prog, meta, ALU_OP_XOR, BR_BNE); 1249d9ae7f2bSJakub Kicinski } 1250d9ae7f2bSJakub Kicinski 1251d9ae7f2bSJakub Kicinski static int goto_out(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1252d9ae7f2bSJakub Kicinski { 1253d9ae7f2bSJakub Kicinski wrp_br_special(nfp_prog, BR_UNC, OP_BR_GO_OUT); 1254d9ae7f2bSJakub Kicinski 1255d9ae7f2bSJakub Kicinski return 0; 1256d9ae7f2bSJakub Kicinski } 1257d9ae7f2bSJakub Kicinski 1258d9ae7f2bSJakub Kicinski static const instr_cb_t instr_cb[256] = { 1259d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_MOV | BPF_X] = mov_reg64, 1260d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_MOV | BPF_K] = mov_imm64, 1261d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_XOR | BPF_X] = xor_reg64, 1262d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_XOR | BPF_K] = xor_imm64, 1263d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_AND | BPF_X] = and_reg64, 1264d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_AND | BPF_K] = and_imm64, 1265d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_OR | BPF_X] = or_reg64, 1266d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_OR | BPF_K] = or_imm64, 1267d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_ADD | BPF_X] = add_reg64, 1268d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_ADD | BPF_K] = add_imm64, 1269d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_SUB | BPF_X] = sub_reg64, 1270d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_SUB | BPF_K] = sub_imm64, 1271d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_LSH | BPF_K] = shl_imm64, 1272d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_RSH | BPF_K] = shr_imm64, 1273d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_MOV | BPF_X] = mov_reg, 1274d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_MOV | BPF_K] = mov_imm, 1275d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_XOR | BPF_X] = xor_reg, 1276d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_XOR | BPF_K] = xor_imm, 1277d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_AND | BPF_X] = and_reg, 1278d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_AND | BPF_K] = and_imm, 1279d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_OR | BPF_X] = or_reg, 1280d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_OR | BPF_K] = or_imm, 1281d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_ADD | BPF_X] = add_reg, 1282d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_ADD | BPF_K] = add_imm, 1283d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_SUB | BPF_X] = sub_reg, 1284d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_SUB | BPF_K] = sub_imm, 1285d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_LSH | BPF_K] = shl_imm, 1286d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IMM | BPF_DW] = imm_ld8, 1287d9ae7f2bSJakub Kicinski [BPF_LD | BPF_ABS | BPF_B] = data_ld1, 1288d9ae7f2bSJakub Kicinski [BPF_LD | BPF_ABS | BPF_H] = data_ld2, 1289d9ae7f2bSJakub Kicinski [BPF_LD | BPF_ABS | BPF_W] = data_ld4, 1290d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IND | BPF_B] = data_ind_ld1, 1291d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IND | BPF_H] = data_ind_ld2, 1292d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IND | BPF_W] = data_ind_ld4, 1293d9ae7f2bSJakub Kicinski [BPF_LDX | BPF_MEM | BPF_W] = mem_ldx4, 1294d9ae7f2bSJakub Kicinski [BPF_STX | BPF_MEM | BPF_W] = mem_stx4, 1295d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JA | BPF_K] = jump, 1296d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JEQ | BPF_K] = jeq_imm, 1297d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGT | BPF_K] = jgt_imm, 1298d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGE | BPF_K] = jge_imm, 12995dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLT | BPF_K] = jlt_imm, 13005dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLE | BPF_K] = jle_imm, 1301d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JSET | BPF_K] = jset_imm, 1302d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JNE | BPF_K] = jne_imm, 1303d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JEQ | BPF_X] = jeq_reg, 1304d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGT | BPF_X] = jgt_reg, 1305d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGE | BPF_X] = jge_reg, 13065dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLT | BPF_X] = jlt_reg, 13075dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLE | BPF_X] = jle_reg, 1308d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JSET | BPF_X] = jset_reg, 1309d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JNE | BPF_X] = jne_reg, 1310d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_EXIT] = goto_out, 1311d9ae7f2bSJakub Kicinski }; 1312d9ae7f2bSJakub Kicinski 1313d9ae7f2bSJakub Kicinski /* --- Misc code --- */ 1314d9ae7f2bSJakub Kicinski static void br_set_offset(u64 *instr, u16 offset) 1315d9ae7f2bSJakub Kicinski { 1316d9ae7f2bSJakub Kicinski u16 addr_lo, addr_hi; 1317d9ae7f2bSJakub Kicinski 1318d9ae7f2bSJakub Kicinski addr_lo = offset & (OP_BR_ADDR_LO >> __bf_shf(OP_BR_ADDR_LO)); 1319d9ae7f2bSJakub Kicinski addr_hi = offset != addr_lo; 1320d9ae7f2bSJakub Kicinski *instr &= ~(OP_BR_ADDR_HI | OP_BR_ADDR_LO); 1321d9ae7f2bSJakub Kicinski *instr |= FIELD_PREP(OP_BR_ADDR_HI, addr_hi); 1322d9ae7f2bSJakub Kicinski *instr |= FIELD_PREP(OP_BR_ADDR_LO, addr_lo); 1323d9ae7f2bSJakub Kicinski } 1324d9ae7f2bSJakub Kicinski 1325d9ae7f2bSJakub Kicinski /* --- Assembler logic --- */ 1326d9ae7f2bSJakub Kicinski static int nfp_fixup_branches(struct nfp_prog *nfp_prog) 1327d9ae7f2bSJakub Kicinski { 1328d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta, *next; 1329d9ae7f2bSJakub Kicinski u32 off, br_idx; 1330d9ae7f2bSJakub Kicinski u32 idx; 1331d9ae7f2bSJakub Kicinski 1332d9ae7f2bSJakub Kicinski nfp_for_each_insn_walk2(nfp_prog, meta, next) { 1333d9ae7f2bSJakub Kicinski if (meta->skip) 1334d9ae7f2bSJakub Kicinski continue; 1335d9ae7f2bSJakub Kicinski if (BPF_CLASS(meta->insn.code) != BPF_JMP) 1336d9ae7f2bSJakub Kicinski continue; 1337d9ae7f2bSJakub Kicinski 1338d9ae7f2bSJakub Kicinski br_idx = nfp_prog_offset_to_index(nfp_prog, next->off) - 1; 1339d9ae7f2bSJakub Kicinski if (!nfp_is_br(nfp_prog->prog[br_idx])) { 1340d9ae7f2bSJakub Kicinski pr_err("Fixup found block not ending in branch %d %02x %016llx!!\n", 1341d9ae7f2bSJakub Kicinski br_idx, meta->insn.code, nfp_prog->prog[br_idx]); 1342d9ae7f2bSJakub Kicinski return -ELOOP; 1343d9ae7f2bSJakub Kicinski } 1344d9ae7f2bSJakub Kicinski /* Leave special branches for later */ 1345d9ae7f2bSJakub Kicinski if (FIELD_GET(OP_BR_SPECIAL, nfp_prog->prog[br_idx])) 1346d9ae7f2bSJakub Kicinski continue; 1347d9ae7f2bSJakub Kicinski 1348d9ae7f2bSJakub Kicinski /* Find the target offset in assembler realm */ 1349d9ae7f2bSJakub Kicinski off = meta->insn.off; 1350d9ae7f2bSJakub Kicinski if (!off) { 1351d9ae7f2bSJakub Kicinski pr_err("Fixup found zero offset!!\n"); 1352d9ae7f2bSJakub Kicinski return -ELOOP; 1353d9ae7f2bSJakub Kicinski } 1354d9ae7f2bSJakub Kicinski 1355d9ae7f2bSJakub Kicinski while (off && nfp_meta_has_next(nfp_prog, next)) { 1356d9ae7f2bSJakub Kicinski next = nfp_meta_next(next); 1357d9ae7f2bSJakub Kicinski off--; 1358d9ae7f2bSJakub Kicinski } 1359d9ae7f2bSJakub Kicinski if (off) { 1360d9ae7f2bSJakub Kicinski pr_err("Fixup found too large jump!! %d\n", off); 1361d9ae7f2bSJakub Kicinski return -ELOOP; 1362d9ae7f2bSJakub Kicinski } 1363d9ae7f2bSJakub Kicinski 1364d9ae7f2bSJakub Kicinski if (next->skip) { 1365d9ae7f2bSJakub Kicinski pr_err("Branch landing on removed instruction!!\n"); 1366d9ae7f2bSJakub Kicinski return -ELOOP; 1367d9ae7f2bSJakub Kicinski } 1368d9ae7f2bSJakub Kicinski 1369d9ae7f2bSJakub Kicinski for (idx = nfp_prog_offset_to_index(nfp_prog, meta->off); 1370d9ae7f2bSJakub Kicinski idx <= br_idx; idx++) { 1371d9ae7f2bSJakub Kicinski if (!nfp_is_br(nfp_prog->prog[idx])) 1372d9ae7f2bSJakub Kicinski continue; 1373d9ae7f2bSJakub Kicinski br_set_offset(&nfp_prog->prog[idx], next->off); 1374d9ae7f2bSJakub Kicinski } 1375d9ae7f2bSJakub Kicinski } 1376d9ae7f2bSJakub Kicinski 1377d9ae7f2bSJakub Kicinski /* Fixup 'goto out's separately, they can be scattered around */ 1378d9ae7f2bSJakub Kicinski for (br_idx = 0; br_idx < nfp_prog->prog_len; br_idx++) { 1379d9ae7f2bSJakub Kicinski enum br_special special; 1380d9ae7f2bSJakub Kicinski 1381d9ae7f2bSJakub Kicinski if ((nfp_prog->prog[br_idx] & OP_BR_BASE_MASK) != OP_BR_BASE) 1382d9ae7f2bSJakub Kicinski continue; 1383d9ae7f2bSJakub Kicinski 1384d9ae7f2bSJakub Kicinski special = FIELD_GET(OP_BR_SPECIAL, nfp_prog->prog[br_idx]); 1385d9ae7f2bSJakub Kicinski switch (special) { 1386d9ae7f2bSJakub Kicinski case OP_BR_NORMAL: 1387d9ae7f2bSJakub Kicinski break; 1388d9ae7f2bSJakub Kicinski case OP_BR_GO_OUT: 1389d9ae7f2bSJakub Kicinski br_set_offset(&nfp_prog->prog[br_idx], 1390d9ae7f2bSJakub Kicinski nfp_prog->tgt_out); 1391d9ae7f2bSJakub Kicinski break; 1392d9ae7f2bSJakub Kicinski case OP_BR_GO_ABORT: 1393d9ae7f2bSJakub Kicinski br_set_offset(&nfp_prog->prog[br_idx], 1394d9ae7f2bSJakub Kicinski nfp_prog->tgt_abort); 1395d9ae7f2bSJakub Kicinski break; 1396d9ae7f2bSJakub Kicinski } 1397d9ae7f2bSJakub Kicinski 1398d9ae7f2bSJakub Kicinski nfp_prog->prog[br_idx] &= ~OP_BR_SPECIAL; 1399d9ae7f2bSJakub Kicinski } 1400d9ae7f2bSJakub Kicinski 1401d9ae7f2bSJakub Kicinski return 0; 1402d9ae7f2bSJakub Kicinski } 1403d9ae7f2bSJakub Kicinski 1404d9ae7f2bSJakub Kicinski static void nfp_intro(struct nfp_prog *nfp_prog) 1405d9ae7f2bSJakub Kicinski { 140618e53b6cSJakub Kicinski wrp_immed(nfp_prog, plen_reg(nfp_prog), GENMASK(13, 0)); 140718e53b6cSJakub Kicinski emit_alu(nfp_prog, plen_reg(nfp_prog), 140818e53b6cSJakub Kicinski plen_reg(nfp_prog), ALU_OP_AND, pv_len(nfp_prog)); 1409d9ae7f2bSJakub Kicinski } 1410d9ae7f2bSJakub Kicinski 1411d9ae7f2bSJakub Kicinski static void nfp_outro_tc_legacy(struct nfp_prog *nfp_prog) 1412d9ae7f2bSJakub Kicinski { 1413d9ae7f2bSJakub Kicinski const u8 act2code[] = { 1414d9ae7f2bSJakub Kicinski [NN_ACT_TC_DROP] = 0x22, 1415d9ae7f2bSJakub Kicinski [NN_ACT_TC_REDIR] = 0x24 1416d9ae7f2bSJakub Kicinski }; 1417d9ae7f2bSJakub Kicinski /* Target for aborts */ 1418d9ae7f2bSJakub Kicinski nfp_prog->tgt_abort = nfp_prog_current_offset(nfp_prog); 1419d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(0), 0); 1420d9ae7f2bSJakub Kicinski 1421d9ae7f2bSJakub Kicinski /* Target for normal exits */ 1422d9ae7f2bSJakub Kicinski nfp_prog->tgt_out = nfp_prog_current_offset(nfp_prog); 1423d9ae7f2bSJakub Kicinski /* Legacy TC mode: 1424d9ae7f2bSJakub Kicinski * 0 0x11 -> pass, count as stat0 1425d9ae7f2bSJakub Kicinski * -1 drop 0x22 -> drop, count as stat1 1426d9ae7f2bSJakub Kicinski * redir 0x24 -> redir, count as stat1 1427d9ae7f2bSJakub Kicinski * ife mark 0x21 -> pass, count as stat1 1428d9ae7f2bSJakub Kicinski * ife + tx 0x24 -> redir, count as stat1 1429d9ae7f2bSJakub Kicinski */ 1430d9ae7f2bSJakub Kicinski emit_br_byte_neq(nfp_prog, reg_b(0), 0xff, 0, nfp_prog->tgt_done, 2); 1431d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_a(0), 1432d9ae7f2bSJakub Kicinski reg_none(), ALU_OP_NONE, NFP_BPF_ABI_FLAGS); 1433d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_imm(0x11), SHF_SC_L_SHF, 16); 1434d9ae7f2bSJakub Kicinski 1435d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_UNC, nfp_prog->tgt_done, 1); 1436d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_imm(act2code[nfp_prog->act]), 1437d9ae7f2bSJakub Kicinski SHF_SC_L_SHF, 16); 1438d9ae7f2bSJakub Kicinski } 1439d9ae7f2bSJakub Kicinski 1440d9ae7f2bSJakub Kicinski static void nfp_outro_tc_da(struct nfp_prog *nfp_prog) 1441d9ae7f2bSJakub Kicinski { 1442d9ae7f2bSJakub Kicinski /* TC direct-action mode: 1443d9ae7f2bSJakub Kicinski * 0,1 ok NOT SUPPORTED[1] 1444d9ae7f2bSJakub Kicinski * 2 drop 0x22 -> drop, count as stat1 1445d9ae7f2bSJakub Kicinski * 4,5 nuke 0x02 -> drop 1446d9ae7f2bSJakub Kicinski * 7 redir 0x44 -> redir, count as stat2 1447d9ae7f2bSJakub Kicinski * * unspec 0x11 -> pass, count as stat0 1448d9ae7f2bSJakub Kicinski * 1449d9ae7f2bSJakub Kicinski * [1] We can't support OK and RECLASSIFY because we can't tell TC 1450d9ae7f2bSJakub Kicinski * the exact decision made. We are forced to support UNSPEC 1451d9ae7f2bSJakub Kicinski * to handle aborts so that's the only one we handle for passing 1452d9ae7f2bSJakub Kicinski * packets up the stack. 1453d9ae7f2bSJakub Kicinski */ 1454d9ae7f2bSJakub Kicinski /* Target for aborts */ 1455d9ae7f2bSJakub Kicinski nfp_prog->tgt_abort = nfp_prog_current_offset(nfp_prog); 1456d9ae7f2bSJakub Kicinski 1457d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 1458d9ae7f2bSJakub Kicinski 1459d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_a(0), 1460d9ae7f2bSJakub Kicinski reg_none(), ALU_OP_NONE, NFP_BPF_ABI_FLAGS); 1461d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_imm(0x11), SHF_SC_L_SHF, 16); 1462d9ae7f2bSJakub Kicinski 1463d9ae7f2bSJakub Kicinski /* Target for normal exits */ 1464d9ae7f2bSJakub Kicinski nfp_prog->tgt_out = nfp_prog_current_offset(nfp_prog); 1465d9ae7f2bSJakub Kicinski 1466d9ae7f2bSJakub Kicinski /* if R0 > 7 jump to abort */ 1467d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_imm(7), ALU_OP_SUB, reg_b(0)); 1468d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BLO, nfp_prog->tgt_abort, 0); 1469d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_a(0), 1470d9ae7f2bSJakub Kicinski reg_none(), ALU_OP_NONE, NFP_BPF_ABI_FLAGS); 1471d9ae7f2bSJakub Kicinski 1472d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_b(2), 0x41221211); 1473d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_b(3), 0x41001211); 1474d9ae7f2bSJakub Kicinski 1475d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_a(1), 1476d9ae7f2bSJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(0), SHF_SC_L_SHF, 2); 1477d9ae7f2bSJakub Kicinski 1478d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(1), ALU_OP_OR, reg_imm(0)); 1479d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_a(2), 1480d9ae7f2bSJakub Kicinski reg_imm(0xf), SHF_OP_AND, reg_b(2), SHF_SC_R_SHF, 0); 1481d9ae7f2bSJakub Kicinski 1482d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(1), ALU_OP_OR, reg_imm(0)); 1483d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_b(2), 1484d9ae7f2bSJakub Kicinski reg_imm(0xf), SHF_OP_AND, reg_b(3), SHF_SC_R_SHF, 0); 1485d9ae7f2bSJakub Kicinski 1486d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 1487d9ae7f2bSJakub Kicinski 1488d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_b(2), 1489d9ae7f2bSJakub Kicinski reg_a(2), SHF_OP_OR, reg_b(2), SHF_SC_L_SHF, 4); 1490d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_b(2), SHF_SC_L_SHF, 16); 1491d9ae7f2bSJakub Kicinski } 1492d9ae7f2bSJakub Kicinski 1493d9ae7f2bSJakub Kicinski static void nfp_outro_xdp(struct nfp_prog *nfp_prog) 1494d9ae7f2bSJakub Kicinski { 1495d9ae7f2bSJakub Kicinski /* XDP return codes: 1496d9ae7f2bSJakub Kicinski * 0 aborted 0x82 -> drop, count as stat3 1497d9ae7f2bSJakub Kicinski * 1 drop 0x22 -> drop, count as stat1 1498d9ae7f2bSJakub Kicinski * 2 pass 0x11 -> pass, count as stat0 1499d9ae7f2bSJakub Kicinski * 3 tx 0x44 -> redir, count as stat2 1500d9ae7f2bSJakub Kicinski * * unknown 0x82 -> drop, count as stat3 1501d9ae7f2bSJakub Kicinski */ 1502d9ae7f2bSJakub Kicinski /* Target for aborts */ 1503d9ae7f2bSJakub Kicinski nfp_prog->tgt_abort = nfp_prog_current_offset(nfp_prog); 1504d9ae7f2bSJakub Kicinski 1505d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 1506d9ae7f2bSJakub Kicinski 1507d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_a(0), 1508d9ae7f2bSJakub Kicinski reg_none(), ALU_OP_NONE, NFP_BPF_ABI_FLAGS); 1509d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_imm(0x82), SHF_SC_L_SHF, 16); 1510d9ae7f2bSJakub Kicinski 1511d9ae7f2bSJakub Kicinski /* Target for normal exits */ 1512d9ae7f2bSJakub Kicinski nfp_prog->tgt_out = nfp_prog_current_offset(nfp_prog); 1513d9ae7f2bSJakub Kicinski 1514d9ae7f2bSJakub Kicinski /* if R0 > 3 jump to abort */ 1515d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_imm(3), ALU_OP_SUB, reg_b(0)); 1516d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BLO, nfp_prog->tgt_abort, 0); 1517d9ae7f2bSJakub Kicinski 1518d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_b(2), 0x44112282); 1519d9ae7f2bSJakub Kicinski 1520d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_a(1), 1521d9ae7f2bSJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(0), SHF_SC_L_SHF, 3); 1522d9ae7f2bSJakub Kicinski 1523d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(1), ALU_OP_OR, reg_imm(0)); 1524d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_b(2), 1525d9ae7f2bSJakub Kicinski reg_imm(0xff), SHF_OP_AND, reg_b(2), SHF_SC_R_SHF, 0); 1526d9ae7f2bSJakub Kicinski 1527d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 1528d9ae7f2bSJakub Kicinski 1529d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_a(0), 1530d9ae7f2bSJakub Kicinski reg_none(), ALU_OP_NONE, NFP_BPF_ABI_FLAGS); 1531d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_b(2), SHF_SC_L_SHF, 16); 1532d9ae7f2bSJakub Kicinski } 1533d9ae7f2bSJakub Kicinski 1534d9ae7f2bSJakub Kicinski static void nfp_outro(struct nfp_prog *nfp_prog) 1535d9ae7f2bSJakub Kicinski { 1536d9ae7f2bSJakub Kicinski switch (nfp_prog->act) { 1537d9ae7f2bSJakub Kicinski case NN_ACT_DIRECT: 1538d9ae7f2bSJakub Kicinski nfp_outro_tc_da(nfp_prog); 1539d9ae7f2bSJakub Kicinski break; 1540d9ae7f2bSJakub Kicinski case NN_ACT_TC_DROP: 1541d9ae7f2bSJakub Kicinski case NN_ACT_TC_REDIR: 1542d9ae7f2bSJakub Kicinski nfp_outro_tc_legacy(nfp_prog); 1543d9ae7f2bSJakub Kicinski break; 1544d9ae7f2bSJakub Kicinski case NN_ACT_XDP: 1545d9ae7f2bSJakub Kicinski nfp_outro_xdp(nfp_prog); 1546d9ae7f2bSJakub Kicinski break; 1547d9ae7f2bSJakub Kicinski } 1548d9ae7f2bSJakub Kicinski } 1549d9ae7f2bSJakub Kicinski 1550d9ae7f2bSJakub Kicinski static int nfp_translate(struct nfp_prog *nfp_prog) 1551d9ae7f2bSJakub Kicinski { 1552d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta; 1553d9ae7f2bSJakub Kicinski int err; 1554d9ae7f2bSJakub Kicinski 1555d9ae7f2bSJakub Kicinski nfp_intro(nfp_prog); 1556d9ae7f2bSJakub Kicinski if (nfp_prog->error) 1557d9ae7f2bSJakub Kicinski return nfp_prog->error; 1558d9ae7f2bSJakub Kicinski 1559d9ae7f2bSJakub Kicinski list_for_each_entry(meta, &nfp_prog->insns, l) { 1560d9ae7f2bSJakub Kicinski instr_cb_t cb = instr_cb[meta->insn.code]; 1561d9ae7f2bSJakub Kicinski 1562d9ae7f2bSJakub Kicinski meta->off = nfp_prog_current_offset(nfp_prog); 1563d9ae7f2bSJakub Kicinski 1564d9ae7f2bSJakub Kicinski if (meta->skip) { 1565d9ae7f2bSJakub Kicinski nfp_prog->n_translated++; 1566d9ae7f2bSJakub Kicinski continue; 1567d9ae7f2bSJakub Kicinski } 1568d9ae7f2bSJakub Kicinski 1569d9ae7f2bSJakub Kicinski if (nfp_meta_has_prev(nfp_prog, meta) && 1570d9ae7f2bSJakub Kicinski nfp_meta_prev(meta)->double_cb) 1571d9ae7f2bSJakub Kicinski cb = nfp_meta_prev(meta)->double_cb; 1572d9ae7f2bSJakub Kicinski if (!cb) 1573d9ae7f2bSJakub Kicinski return -ENOENT; 1574d9ae7f2bSJakub Kicinski err = cb(nfp_prog, meta); 1575d9ae7f2bSJakub Kicinski if (err) 1576d9ae7f2bSJakub Kicinski return err; 1577d9ae7f2bSJakub Kicinski 1578d9ae7f2bSJakub Kicinski nfp_prog->n_translated++; 1579d9ae7f2bSJakub Kicinski } 1580d9ae7f2bSJakub Kicinski 1581d9ae7f2bSJakub Kicinski nfp_outro(nfp_prog); 1582d9ae7f2bSJakub Kicinski if (nfp_prog->error) 1583d9ae7f2bSJakub Kicinski return nfp_prog->error; 1584d9ae7f2bSJakub Kicinski 1585d9ae7f2bSJakub Kicinski return nfp_fixup_branches(nfp_prog); 1586d9ae7f2bSJakub Kicinski } 1587d9ae7f2bSJakub Kicinski 1588d9ae7f2bSJakub Kicinski static int 1589d9ae7f2bSJakub Kicinski nfp_prog_prepare(struct nfp_prog *nfp_prog, const struct bpf_insn *prog, 1590d9ae7f2bSJakub Kicinski unsigned int cnt) 1591d9ae7f2bSJakub Kicinski { 1592d9ae7f2bSJakub Kicinski unsigned int i; 1593d9ae7f2bSJakub Kicinski 1594d9ae7f2bSJakub Kicinski for (i = 0; i < cnt; i++) { 1595d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta; 1596d9ae7f2bSJakub Kicinski 1597d9ae7f2bSJakub Kicinski meta = kzalloc(sizeof(*meta), GFP_KERNEL); 1598d9ae7f2bSJakub Kicinski if (!meta) 1599d9ae7f2bSJakub Kicinski return -ENOMEM; 1600d9ae7f2bSJakub Kicinski 1601d9ae7f2bSJakub Kicinski meta->insn = prog[i]; 1602d9ae7f2bSJakub Kicinski meta->n = i; 1603d9ae7f2bSJakub Kicinski 1604d9ae7f2bSJakub Kicinski list_add_tail(&meta->l, &nfp_prog->insns); 1605d9ae7f2bSJakub Kicinski } 1606d9ae7f2bSJakub Kicinski 1607d9ae7f2bSJakub Kicinski return 0; 1608d9ae7f2bSJakub Kicinski } 1609d9ae7f2bSJakub Kicinski 1610d9ae7f2bSJakub Kicinski /* --- Optimizations --- */ 1611d9ae7f2bSJakub Kicinski static void nfp_bpf_opt_reg_init(struct nfp_prog *nfp_prog) 1612d9ae7f2bSJakub Kicinski { 1613d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta; 1614d9ae7f2bSJakub Kicinski 1615d9ae7f2bSJakub Kicinski list_for_each_entry(meta, &nfp_prog->insns, l) { 1616d9ae7f2bSJakub Kicinski struct bpf_insn insn = meta->insn; 1617d9ae7f2bSJakub Kicinski 1618d9ae7f2bSJakub Kicinski /* Programs converted from cBPF start with register xoring */ 1619d9ae7f2bSJakub Kicinski if (insn.code == (BPF_ALU64 | BPF_XOR | BPF_X) && 1620d9ae7f2bSJakub Kicinski insn.src_reg == insn.dst_reg) 1621d9ae7f2bSJakub Kicinski continue; 1622d9ae7f2bSJakub Kicinski 1623d9ae7f2bSJakub Kicinski /* Programs start with R6 = R1 but we ignore the skb pointer */ 1624d9ae7f2bSJakub Kicinski if (insn.code == (BPF_ALU64 | BPF_MOV | BPF_X) && 1625d9ae7f2bSJakub Kicinski insn.src_reg == 1 && insn.dst_reg == 6) 1626d9ae7f2bSJakub Kicinski meta->skip = true; 1627d9ae7f2bSJakub Kicinski 1628d9ae7f2bSJakub Kicinski /* Return as soon as something doesn't match */ 1629d9ae7f2bSJakub Kicinski if (!meta->skip) 1630d9ae7f2bSJakub Kicinski return; 1631d9ae7f2bSJakub Kicinski } 1632d9ae7f2bSJakub Kicinski } 1633d9ae7f2bSJakub Kicinski 1634d9ae7f2bSJakub Kicinski /* Remove masking after load since our load guarantees this is not needed */ 1635d9ae7f2bSJakub Kicinski static void nfp_bpf_opt_ld_mask(struct nfp_prog *nfp_prog) 1636d9ae7f2bSJakub Kicinski { 1637d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta1, *meta2; 1638d9ae7f2bSJakub Kicinski const s32 exp_mask[] = { 1639d9ae7f2bSJakub Kicinski [BPF_B] = 0x000000ffU, 1640d9ae7f2bSJakub Kicinski [BPF_H] = 0x0000ffffU, 1641d9ae7f2bSJakub Kicinski [BPF_W] = 0xffffffffU, 1642d9ae7f2bSJakub Kicinski }; 1643d9ae7f2bSJakub Kicinski 1644d9ae7f2bSJakub Kicinski nfp_for_each_insn_walk2(nfp_prog, meta1, meta2) { 1645d9ae7f2bSJakub Kicinski struct bpf_insn insn, next; 1646d9ae7f2bSJakub Kicinski 1647d9ae7f2bSJakub Kicinski insn = meta1->insn; 1648d9ae7f2bSJakub Kicinski next = meta2->insn; 1649d9ae7f2bSJakub Kicinski 1650d9ae7f2bSJakub Kicinski if (BPF_CLASS(insn.code) != BPF_LD) 1651d9ae7f2bSJakub Kicinski continue; 1652d9ae7f2bSJakub Kicinski if (BPF_MODE(insn.code) != BPF_ABS && 1653d9ae7f2bSJakub Kicinski BPF_MODE(insn.code) != BPF_IND) 1654d9ae7f2bSJakub Kicinski continue; 1655d9ae7f2bSJakub Kicinski 1656d9ae7f2bSJakub Kicinski if (next.code != (BPF_ALU64 | BPF_AND | BPF_K)) 1657d9ae7f2bSJakub Kicinski continue; 1658d9ae7f2bSJakub Kicinski 1659d9ae7f2bSJakub Kicinski if (!exp_mask[BPF_SIZE(insn.code)]) 1660d9ae7f2bSJakub Kicinski continue; 1661d9ae7f2bSJakub Kicinski if (exp_mask[BPF_SIZE(insn.code)] != next.imm) 1662d9ae7f2bSJakub Kicinski continue; 1663d9ae7f2bSJakub Kicinski 1664d9ae7f2bSJakub Kicinski if (next.src_reg || next.dst_reg) 1665d9ae7f2bSJakub Kicinski continue; 1666d9ae7f2bSJakub Kicinski 1667d9ae7f2bSJakub Kicinski meta2->skip = true; 1668d9ae7f2bSJakub Kicinski } 1669d9ae7f2bSJakub Kicinski } 1670d9ae7f2bSJakub Kicinski 1671d9ae7f2bSJakub Kicinski static void nfp_bpf_opt_ld_shift(struct nfp_prog *nfp_prog) 1672d9ae7f2bSJakub Kicinski { 1673d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta1, *meta2, *meta3; 1674d9ae7f2bSJakub Kicinski 1675d9ae7f2bSJakub Kicinski nfp_for_each_insn_walk3(nfp_prog, meta1, meta2, meta3) { 1676d9ae7f2bSJakub Kicinski struct bpf_insn insn, next1, next2; 1677d9ae7f2bSJakub Kicinski 1678d9ae7f2bSJakub Kicinski insn = meta1->insn; 1679d9ae7f2bSJakub Kicinski next1 = meta2->insn; 1680d9ae7f2bSJakub Kicinski next2 = meta3->insn; 1681d9ae7f2bSJakub Kicinski 1682d9ae7f2bSJakub Kicinski if (BPF_CLASS(insn.code) != BPF_LD) 1683d9ae7f2bSJakub Kicinski continue; 1684d9ae7f2bSJakub Kicinski if (BPF_MODE(insn.code) != BPF_ABS && 1685d9ae7f2bSJakub Kicinski BPF_MODE(insn.code) != BPF_IND) 1686d9ae7f2bSJakub Kicinski continue; 1687d9ae7f2bSJakub Kicinski if (BPF_SIZE(insn.code) != BPF_W) 1688d9ae7f2bSJakub Kicinski continue; 1689d9ae7f2bSJakub Kicinski 1690d9ae7f2bSJakub Kicinski if (!(next1.code == (BPF_LSH | BPF_K | BPF_ALU64) && 1691d9ae7f2bSJakub Kicinski next2.code == (BPF_RSH | BPF_K | BPF_ALU64)) && 1692d9ae7f2bSJakub Kicinski !(next1.code == (BPF_RSH | BPF_K | BPF_ALU64) && 1693d9ae7f2bSJakub Kicinski next2.code == (BPF_LSH | BPF_K | BPF_ALU64))) 1694d9ae7f2bSJakub Kicinski continue; 1695d9ae7f2bSJakub Kicinski 1696d9ae7f2bSJakub Kicinski if (next1.src_reg || next1.dst_reg || 1697d9ae7f2bSJakub Kicinski next2.src_reg || next2.dst_reg) 1698d9ae7f2bSJakub Kicinski continue; 1699d9ae7f2bSJakub Kicinski 1700d9ae7f2bSJakub Kicinski if (next1.imm != 0x20 || next2.imm != 0x20) 1701d9ae7f2bSJakub Kicinski continue; 1702d9ae7f2bSJakub Kicinski 1703d9ae7f2bSJakub Kicinski meta2->skip = true; 1704d9ae7f2bSJakub Kicinski meta3->skip = true; 1705d9ae7f2bSJakub Kicinski } 1706d9ae7f2bSJakub Kicinski } 1707d9ae7f2bSJakub Kicinski 1708d9ae7f2bSJakub Kicinski static int nfp_bpf_optimize(struct nfp_prog *nfp_prog) 1709d9ae7f2bSJakub Kicinski { 1710d9ae7f2bSJakub Kicinski nfp_bpf_opt_reg_init(nfp_prog); 1711d9ae7f2bSJakub Kicinski 1712d9ae7f2bSJakub Kicinski nfp_bpf_opt_ld_mask(nfp_prog); 1713d9ae7f2bSJakub Kicinski nfp_bpf_opt_ld_shift(nfp_prog); 1714d9ae7f2bSJakub Kicinski 1715d9ae7f2bSJakub Kicinski return 0; 1716d9ae7f2bSJakub Kicinski } 1717d9ae7f2bSJakub Kicinski 1718d9ae7f2bSJakub Kicinski /** 1719d9ae7f2bSJakub Kicinski * nfp_bpf_jit() - translate BPF code into NFP assembly 1720d9ae7f2bSJakub Kicinski * @filter: kernel BPF filter struct 1721d9ae7f2bSJakub Kicinski * @prog_mem: memory to store assembler instructions 1722d9ae7f2bSJakub Kicinski * @act: action attached to this eBPF program 1723d9ae7f2bSJakub Kicinski * @prog_start: offset of the first instruction when loaded 1724d9ae7f2bSJakub Kicinski * @prog_done: where to jump on exit 1725d9ae7f2bSJakub Kicinski * @prog_sz: size of @prog_mem in instructions 1726d9ae7f2bSJakub Kicinski * @res: achieved parameters of translation results 1727d9ae7f2bSJakub Kicinski */ 1728d9ae7f2bSJakub Kicinski int 1729d9ae7f2bSJakub Kicinski nfp_bpf_jit(struct bpf_prog *filter, void *prog_mem, 1730d9ae7f2bSJakub Kicinski enum nfp_bpf_action_type act, 1731d9ae7f2bSJakub Kicinski unsigned int prog_start, unsigned int prog_done, 1732d9ae7f2bSJakub Kicinski unsigned int prog_sz, struct nfp_bpf_result *res) 1733d9ae7f2bSJakub Kicinski { 1734d9ae7f2bSJakub Kicinski struct nfp_prog *nfp_prog; 1735d9ae7f2bSJakub Kicinski int ret; 1736d9ae7f2bSJakub Kicinski 1737d9ae7f2bSJakub Kicinski nfp_prog = kzalloc(sizeof(*nfp_prog), GFP_KERNEL); 1738d9ae7f2bSJakub Kicinski if (!nfp_prog) 1739d9ae7f2bSJakub Kicinski return -ENOMEM; 1740d9ae7f2bSJakub Kicinski 1741d9ae7f2bSJakub Kicinski INIT_LIST_HEAD(&nfp_prog->insns); 1742d9ae7f2bSJakub Kicinski nfp_prog->act = act; 1743d9ae7f2bSJakub Kicinski nfp_prog->start_off = prog_start; 1744d9ae7f2bSJakub Kicinski nfp_prog->tgt_done = prog_done; 1745d9ae7f2bSJakub Kicinski 1746d9ae7f2bSJakub Kicinski ret = nfp_prog_prepare(nfp_prog, filter->insnsi, filter->len); 1747d9ae7f2bSJakub Kicinski if (ret) 1748d9ae7f2bSJakub Kicinski goto out; 1749d9ae7f2bSJakub Kicinski 1750d9ae7f2bSJakub Kicinski ret = nfp_prog_verify(nfp_prog, filter); 1751d9ae7f2bSJakub Kicinski if (ret) 1752d9ae7f2bSJakub Kicinski goto out; 1753d9ae7f2bSJakub Kicinski 1754d9ae7f2bSJakub Kicinski ret = nfp_bpf_optimize(nfp_prog); 1755d9ae7f2bSJakub Kicinski if (ret) 1756d9ae7f2bSJakub Kicinski goto out; 1757d9ae7f2bSJakub Kicinski 1758226e0e94SJakub Kicinski nfp_prog->num_regs = MAX_BPF_REG; 1759d9ae7f2bSJakub Kicinski nfp_prog->regs_per_thread = 32; 1760d9ae7f2bSJakub Kicinski 1761d9ae7f2bSJakub Kicinski nfp_prog->prog = prog_mem; 1762d9ae7f2bSJakub Kicinski nfp_prog->__prog_alloc_len = prog_sz; 1763d9ae7f2bSJakub Kicinski 1764d9ae7f2bSJakub Kicinski ret = nfp_translate(nfp_prog); 1765d9ae7f2bSJakub Kicinski if (ret) { 1766d9ae7f2bSJakub Kicinski pr_err("Translation failed with error %d (translated: %u)\n", 1767d9ae7f2bSJakub Kicinski ret, nfp_prog->n_translated); 1768d9ae7f2bSJakub Kicinski ret = -EINVAL; 1769d9ae7f2bSJakub Kicinski } 1770d9ae7f2bSJakub Kicinski 1771d9ae7f2bSJakub Kicinski res->n_instr = nfp_prog->prog_len; 1772226e0e94SJakub Kicinski res->dense_mode = false; 1773d9ae7f2bSJakub Kicinski out: 1774d9ae7f2bSJakub Kicinski nfp_prog_free(nfp_prog); 1775d9ae7f2bSJakub Kicinski 1776d9ae7f2bSJakub Kicinski return ret; 1777d9ae7f2bSJakub Kicinski } 1778