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 405bc8c80a8SJakub Kicinski emit_ld_field_any(struct nfp_prog *nfp_prog, swreg dst, u8 bmask, swreg src, 406bc8c80a8SJakub Kicinski enum shf_sc sc, u8 shift, bool zero) 407d9ae7f2bSJakub Kicinski { 408d9ae7f2bSJakub Kicinski struct nfp_insn_re_regs reg; 409d9ae7f2bSJakub Kicinski int err; 410d9ae7f2bSJakub Kicinski 4112de1be1dSJakub Kicinski /* Note: ld_field is special as it uses one of the src regs as dst */ 4122de1be1dSJakub Kicinski err = swreg_to_restricted(dst, dst, src, ®, true); 413d9ae7f2bSJakub Kicinski if (err) { 414d9ae7f2bSJakub Kicinski nfp_prog->error = err; 415d9ae7f2bSJakub Kicinski return; 416d9ae7f2bSJakub Kicinski } 417d9ae7f2bSJakub Kicinski 418d9ae7f2bSJakub Kicinski __emit_ld_field(nfp_prog, sc, reg.areg, bmask, reg.breg, shift, 419995e101fSJakub Kicinski reg.i8, zero, reg.swap, reg.wr_both, 420995e101fSJakub Kicinski reg.dst_lmextn, reg.src_lmextn); 421d9ae7f2bSJakub Kicinski } 422d9ae7f2bSJakub Kicinski 423d9ae7f2bSJakub Kicinski static void 424b3f868dfSJakub Kicinski emit_ld_field(struct nfp_prog *nfp_prog, swreg dst, u8 bmask, swreg src, 425d9ae7f2bSJakub Kicinski enum shf_sc sc, u8 shift) 426d9ae7f2bSJakub Kicinski { 427bc8c80a8SJakub Kicinski emit_ld_field_any(nfp_prog, dst, bmask, src, sc, shift, false); 428d9ae7f2bSJakub Kicinski } 429d9ae7f2bSJakub Kicinski 4301c03e03fSJakub Kicinski static void emit_nop(struct nfp_prog *nfp_prog) 4311c03e03fSJakub Kicinski { 4321c03e03fSJakub Kicinski __emit_immed(nfp_prog, UR_REG_IMM, UR_REG_IMM, 0, 0, 0, 0, 0, 0, 0); 4331c03e03fSJakub Kicinski } 4341c03e03fSJakub Kicinski 435d9ae7f2bSJakub Kicinski /* --- Wrappers --- */ 436d9ae7f2bSJakub Kicinski static bool pack_immed(u32 imm, u16 *val, enum immed_shift *shift) 437d9ae7f2bSJakub Kicinski { 438d9ae7f2bSJakub Kicinski if (!(imm & 0xffff0000)) { 439d9ae7f2bSJakub Kicinski *val = imm; 440d9ae7f2bSJakub Kicinski *shift = IMMED_SHIFT_0B; 441d9ae7f2bSJakub Kicinski } else if (!(imm & 0xff0000ff)) { 442d9ae7f2bSJakub Kicinski *val = imm >> 8; 443d9ae7f2bSJakub Kicinski *shift = IMMED_SHIFT_1B; 444d9ae7f2bSJakub Kicinski } else if (!(imm & 0x0000ffff)) { 445d9ae7f2bSJakub Kicinski *val = imm >> 16; 446d9ae7f2bSJakub Kicinski *shift = IMMED_SHIFT_2B; 447d9ae7f2bSJakub Kicinski } else { 448d9ae7f2bSJakub Kicinski return false; 449d9ae7f2bSJakub Kicinski } 450d9ae7f2bSJakub Kicinski 451d9ae7f2bSJakub Kicinski return true; 452d9ae7f2bSJakub Kicinski } 453d9ae7f2bSJakub Kicinski 454b3f868dfSJakub Kicinski static void wrp_immed(struct nfp_prog *nfp_prog, swreg dst, u32 imm) 455d9ae7f2bSJakub Kicinski { 456d9ae7f2bSJakub Kicinski enum immed_shift shift; 457d9ae7f2bSJakub Kicinski u16 val; 458d9ae7f2bSJakub Kicinski 459d9ae7f2bSJakub Kicinski if (pack_immed(imm, &val, &shift)) { 460d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, val, IMMED_WIDTH_ALL, false, shift); 461d9ae7f2bSJakub Kicinski } else if (pack_immed(~imm, &val, &shift)) { 462d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, val, IMMED_WIDTH_ALL, true, shift); 463d9ae7f2bSJakub Kicinski } else { 464d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, imm & 0xffff, IMMED_WIDTH_ALL, 465d9ae7f2bSJakub Kicinski false, IMMED_SHIFT_0B); 466d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, imm >> 16, IMMED_WIDTH_WORD, 467d9ae7f2bSJakub Kicinski false, IMMED_SHIFT_2B); 468d9ae7f2bSJakub Kicinski } 469d9ae7f2bSJakub Kicinski } 470d9ae7f2bSJakub Kicinski 471d9ae7f2bSJakub Kicinski /* ur_load_imm_any() - encode immediate or use tmp register (unrestricted) 472d9ae7f2bSJakub Kicinski * If the @imm is small enough encode it directly in operand and return 473d9ae7f2bSJakub Kicinski * otherwise load @imm to a spare register and return its encoding. 474d9ae7f2bSJakub Kicinski */ 475b3f868dfSJakub Kicinski static swreg ur_load_imm_any(struct nfp_prog *nfp_prog, u32 imm, swreg tmp_reg) 476d9ae7f2bSJakub Kicinski { 477d9ae7f2bSJakub Kicinski if (FIELD_FIT(UR_REG_IMM_MAX, imm)) 478d9ae7f2bSJakub Kicinski return reg_imm(imm); 479d9ae7f2bSJakub Kicinski 480d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, tmp_reg, imm); 481d9ae7f2bSJakub Kicinski return tmp_reg; 482d9ae7f2bSJakub Kicinski } 483d9ae7f2bSJakub Kicinski 484d9ae7f2bSJakub Kicinski /* re_load_imm_any() - encode immediate or use tmp register (restricted) 485d9ae7f2bSJakub Kicinski * If the @imm is small enough encode it directly in operand and return 486d9ae7f2bSJakub Kicinski * otherwise load @imm to a spare register and return its encoding. 487d9ae7f2bSJakub Kicinski */ 488b3f868dfSJakub Kicinski static swreg re_load_imm_any(struct nfp_prog *nfp_prog, u32 imm, swreg tmp_reg) 489d9ae7f2bSJakub Kicinski { 490d9ae7f2bSJakub Kicinski if (FIELD_FIT(RE_REG_IMM_MAX, imm)) 491d9ae7f2bSJakub Kicinski return reg_imm(imm); 492d9ae7f2bSJakub Kicinski 493d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, tmp_reg, imm); 494d9ae7f2bSJakub Kicinski return tmp_reg; 495d9ae7f2bSJakub Kicinski } 496d9ae7f2bSJakub Kicinski 497d9ae7f2bSJakub Kicinski static void 498d9ae7f2bSJakub Kicinski wrp_br_special(struct nfp_prog *nfp_prog, enum br_mask mask, 499d9ae7f2bSJakub Kicinski enum br_special special) 500d9ae7f2bSJakub Kicinski { 501d9ae7f2bSJakub Kicinski emit_br(nfp_prog, mask, 0, 0); 502d9ae7f2bSJakub Kicinski 503d9ae7f2bSJakub Kicinski nfp_prog->prog[nfp_prog->prog_len - 1] |= 504d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_SPECIAL, special); 505d9ae7f2bSJakub Kicinski } 506d9ae7f2bSJakub Kicinski 507c000dfb5SJakub Kicinski static void wrp_mov(struct nfp_prog *nfp_prog, swreg dst, swreg src) 508c000dfb5SJakub Kicinski { 509c000dfb5SJakub Kicinski emit_alu(nfp_prog, dst, reg_none(), ALU_OP_NONE, src); 510c000dfb5SJakub Kicinski } 511c000dfb5SJakub Kicinski 512d9ae7f2bSJakub Kicinski static void wrp_reg_mov(struct nfp_prog *nfp_prog, u16 dst, u16 src) 513d9ae7f2bSJakub Kicinski { 514c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_both(dst), reg_b(src)); 515d9ae7f2bSJakub Kicinski } 516d9ae7f2bSJakub Kicinski 517d9ae7f2bSJakub Kicinski static int 5180a793977SJakub Kicinski data_ld(struct nfp_prog *nfp_prog, swreg offset, u8 dst_gpr, int size) 519d9ae7f2bSJakub Kicinski { 520d9ae7f2bSJakub Kicinski unsigned int i; 521d9ae7f2bSJakub Kicinski u16 shift, sz; 522d9ae7f2bSJakub Kicinski 523d9ae7f2bSJakub Kicinski /* We load the value from the address indicated in @offset and then 524d9ae7f2bSJakub Kicinski * shift out the data we don't need. Note: this is big endian! 525d9ae7f2bSJakub Kicinski */ 5260a793977SJakub Kicinski sz = max(size, 4); 527d9ae7f2bSJakub Kicinski shift = size < 4 ? 4 - size : 0; 528d9ae7f2bSJakub Kicinski 5290a793977SJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_READ8, CMD_MODE_32b, 0, 5300a793977SJakub Kicinski pptr_reg(nfp_prog), offset, sz - 1, true); 5310a793977SJakub Kicinski 5320a793977SJakub Kicinski i = 0; 5330a793977SJakub Kicinski if (shift) 5340a793977SJakub Kicinski emit_shf(nfp_prog, reg_both(dst_gpr), reg_none(), SHF_OP_NONE, 5350a793977SJakub Kicinski reg_xfer(0), SHF_SC_R_SHF, shift * 8); 5360a793977SJakub Kicinski else 5370a793977SJakub Kicinski for (; i * 4 < size; i++) 5380a793977SJakub Kicinski wrp_mov(nfp_prog, reg_both(dst_gpr + i), reg_xfer(i)); 5390a793977SJakub Kicinski 5400a793977SJakub Kicinski if (i < 2) 5410a793977SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst_gpr + 1), 0); 5420a793977SJakub Kicinski 5430a793977SJakub Kicinski return 0; 5440a793977SJakub Kicinski } 5450a793977SJakub Kicinski 5460a793977SJakub Kicinski static int 5472ca71441SJakub Kicinski data_ld_host_order(struct nfp_prog *nfp_prog, u8 src_gpr, swreg offset, 5482ca71441SJakub Kicinski u8 dst_gpr, int size) 5492ca71441SJakub Kicinski { 5502ca71441SJakub Kicinski unsigned int i; 5512ca71441SJakub Kicinski u8 mask, sz; 5522ca71441SJakub Kicinski 5532ca71441SJakub Kicinski /* We load the value from the address indicated in @offset and then 5542ca71441SJakub Kicinski * mask out the data we don't need. Note: this is little endian! 5552ca71441SJakub Kicinski */ 5562ca71441SJakub Kicinski sz = max(size, 4); 5572ca71441SJakub Kicinski mask = size < 4 ? GENMASK(size - 1, 0) : 0; 5582ca71441SJakub Kicinski 5592ca71441SJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_READ32_SWAP, CMD_MODE_32b, 0, 5602ca71441SJakub Kicinski reg_a(src_gpr), offset, sz / 4 - 1, true); 5612ca71441SJakub Kicinski 5622ca71441SJakub Kicinski i = 0; 5632ca71441SJakub Kicinski if (mask) 5642ca71441SJakub Kicinski emit_ld_field_any(nfp_prog, reg_both(dst_gpr), mask, 5652ca71441SJakub Kicinski reg_xfer(0), SHF_SC_NONE, 0, true); 5662ca71441SJakub Kicinski else 5672ca71441SJakub Kicinski for (; i * 4 < size; i++) 5682ca71441SJakub Kicinski wrp_mov(nfp_prog, reg_both(dst_gpr + i), reg_xfer(i)); 5692ca71441SJakub Kicinski 5702ca71441SJakub Kicinski if (i < 2) 5712ca71441SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst_gpr + 1), 0); 5722ca71441SJakub Kicinski 5732ca71441SJakub Kicinski return 0; 5742ca71441SJakub Kicinski } 5752ca71441SJakub Kicinski 5762ca71441SJakub Kicinski static int 5770a793977SJakub Kicinski construct_data_ind_ld(struct nfp_prog *nfp_prog, u16 offset, u16 src, u8 size) 5780a793977SJakub Kicinski { 5790a793977SJakub Kicinski swreg tmp_reg; 5800a793977SJakub Kicinski 581d9ae7f2bSJakub Kicinski /* Calculate the true offset (src_reg + imm) */ 582d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, offset, imm_b(nfp_prog)); 5830a793977SJakub Kicinski emit_alu(nfp_prog, imm_both(nfp_prog), reg_a(src), ALU_OP_ADD, tmp_reg); 5840a793977SJakub Kicinski 585d9ae7f2bSJakub Kicinski /* Check packet length (size guaranteed to fit b/c it's u8) */ 586d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_a(nfp_prog), 587d9ae7f2bSJakub Kicinski imm_a(nfp_prog), ALU_OP_ADD, reg_imm(size)); 588d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 58918e53b6cSJakub Kicinski plen_reg(nfp_prog), ALU_OP_SUB, imm_a(nfp_prog)); 590d9ae7f2bSJakub Kicinski wrp_br_special(nfp_prog, BR_BLO, OP_BR_GO_ABORT); 5910a793977SJakub Kicinski 592d9ae7f2bSJakub Kicinski /* Load data */ 5930a793977SJakub Kicinski return data_ld(nfp_prog, imm_b(nfp_prog), 0, size); 594d9ae7f2bSJakub Kicinski } 595d9ae7f2bSJakub Kicinski 596d9ae7f2bSJakub Kicinski static int construct_data_ld(struct nfp_prog *nfp_prog, u16 offset, u8 size) 597d9ae7f2bSJakub Kicinski { 5980a793977SJakub Kicinski swreg tmp_reg; 5990a793977SJakub Kicinski 6000a793977SJakub Kicinski /* Check packet length */ 6010a793977SJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, offset + size, imm_a(nfp_prog)); 6020a793977SJakub Kicinski emit_alu(nfp_prog, reg_none(), plen_reg(nfp_prog), ALU_OP_SUB, tmp_reg); 6030a793977SJakub Kicinski wrp_br_special(nfp_prog, BR_BLO, OP_BR_GO_ABORT); 6040a793977SJakub Kicinski 6050a793977SJakub Kicinski /* Load data */ 6060a793977SJakub Kicinski tmp_reg = re_load_imm_any(nfp_prog, offset, imm_b(nfp_prog)); 6070a793977SJakub Kicinski return data_ld(nfp_prog, tmp_reg, 0, size); 608d9ae7f2bSJakub Kicinski } 609d9ae7f2bSJakub Kicinski 610d9ae7f2bSJakub Kicinski static void 611d9ae7f2bSJakub Kicinski wrp_alu_imm(struct nfp_prog *nfp_prog, u8 dst, enum alu_op alu_op, u32 imm) 612d9ae7f2bSJakub Kicinski { 613b3f868dfSJakub Kicinski swreg tmp_reg; 614d9ae7f2bSJakub Kicinski 615d9ae7f2bSJakub Kicinski if (alu_op == ALU_OP_AND) { 616d9ae7f2bSJakub Kicinski if (!imm) 617d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), 0); 618d9ae7f2bSJakub Kicinski if (!imm || !~imm) 619d9ae7f2bSJakub Kicinski return; 620d9ae7f2bSJakub Kicinski } 621d9ae7f2bSJakub Kicinski if (alu_op == ALU_OP_OR) { 622d9ae7f2bSJakub Kicinski if (!~imm) 623d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), ~0U); 624d9ae7f2bSJakub Kicinski if (!imm || !~imm) 625d9ae7f2bSJakub Kicinski return; 626d9ae7f2bSJakub Kicinski } 627d9ae7f2bSJakub Kicinski if (alu_op == ALU_OP_XOR) { 628d9ae7f2bSJakub Kicinski if (!~imm) 629d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_none(), 630d9ae7f2bSJakub Kicinski ALU_OP_NEG, reg_b(dst)); 631d9ae7f2bSJakub Kicinski if (!imm || !~imm) 632d9ae7f2bSJakub Kicinski return; 633d9ae7f2bSJakub Kicinski } 634d9ae7f2bSJakub Kicinski 635d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm, imm_b(nfp_prog)); 636d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_a(dst), alu_op, tmp_reg); 637d9ae7f2bSJakub Kicinski } 638d9ae7f2bSJakub Kicinski 639d9ae7f2bSJakub Kicinski static int 640d9ae7f2bSJakub Kicinski wrp_alu64_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 641d9ae7f2bSJakub Kicinski enum alu_op alu_op, bool skip) 642d9ae7f2bSJakub Kicinski { 643d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 644d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 645d9ae7f2bSJakub Kicinski 646d9ae7f2bSJakub Kicinski if (skip) { 647d9ae7f2bSJakub Kicinski meta->skip = true; 648d9ae7f2bSJakub Kicinski return 0; 649d9ae7f2bSJakub Kicinski } 650d9ae7f2bSJakub Kicinski 651d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, alu_op, imm & ~0U); 652d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2 + 1, alu_op, imm >> 32); 653d9ae7f2bSJakub Kicinski 654d9ae7f2bSJakub Kicinski return 0; 655d9ae7f2bSJakub Kicinski } 656d9ae7f2bSJakub Kicinski 657d9ae7f2bSJakub Kicinski static int 658d9ae7f2bSJakub Kicinski wrp_alu64_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 659d9ae7f2bSJakub Kicinski enum alu_op alu_op) 660d9ae7f2bSJakub Kicinski { 661d9ae7f2bSJakub Kicinski u8 dst = meta->insn.dst_reg * 2, src = meta->insn.src_reg * 2; 662d9ae7f2bSJakub Kicinski 663d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_a(dst), alu_op, reg_b(src)); 664d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst + 1), 665d9ae7f2bSJakub Kicinski reg_a(dst + 1), alu_op, reg_b(src + 1)); 666d9ae7f2bSJakub Kicinski 667d9ae7f2bSJakub Kicinski return 0; 668d9ae7f2bSJakub Kicinski } 669d9ae7f2bSJakub Kicinski 670d9ae7f2bSJakub Kicinski static int 671d9ae7f2bSJakub Kicinski wrp_alu32_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 672d9ae7f2bSJakub Kicinski enum alu_op alu_op, bool skip) 673d9ae7f2bSJakub Kicinski { 674d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 675d9ae7f2bSJakub Kicinski 676d9ae7f2bSJakub Kicinski if (skip) { 677d9ae7f2bSJakub Kicinski meta->skip = true; 678d9ae7f2bSJakub Kicinski return 0; 679d9ae7f2bSJakub Kicinski } 680d9ae7f2bSJakub Kicinski 681d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, alu_op, insn->imm); 682d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 683d9ae7f2bSJakub Kicinski 684d9ae7f2bSJakub Kicinski return 0; 685d9ae7f2bSJakub Kicinski } 686d9ae7f2bSJakub Kicinski 687d9ae7f2bSJakub Kicinski static int 688d9ae7f2bSJakub Kicinski wrp_alu32_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 689d9ae7f2bSJakub Kicinski enum alu_op alu_op) 690d9ae7f2bSJakub Kicinski { 691d9ae7f2bSJakub Kicinski u8 dst = meta->insn.dst_reg * 2, src = meta->insn.src_reg * 2; 692d9ae7f2bSJakub Kicinski 693d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_a(dst), alu_op, reg_b(src)); 694d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 695d9ae7f2bSJakub Kicinski 696d9ae7f2bSJakub Kicinski return 0; 697d9ae7f2bSJakub Kicinski } 698d9ae7f2bSJakub Kicinski 699d9ae7f2bSJakub Kicinski static void 700d9ae7f2bSJakub Kicinski wrp_test_reg_one(struct nfp_prog *nfp_prog, u8 dst, enum alu_op alu_op, u8 src, 701d9ae7f2bSJakub Kicinski enum br_mask br_mask, u16 off) 702d9ae7f2bSJakub Kicinski { 703d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(dst), alu_op, reg_b(src)); 704d9ae7f2bSJakub Kicinski emit_br(nfp_prog, br_mask, off, 0); 705d9ae7f2bSJakub Kicinski } 706d9ae7f2bSJakub Kicinski 707d9ae7f2bSJakub Kicinski static int 708d9ae7f2bSJakub Kicinski wrp_test_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 709d9ae7f2bSJakub Kicinski enum alu_op alu_op, enum br_mask br_mask) 710d9ae7f2bSJakub Kicinski { 711d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 712d9ae7f2bSJakub Kicinski 713d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 714d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 715d9ae7f2bSJakub Kicinski 716d9ae7f2bSJakub Kicinski wrp_test_reg_one(nfp_prog, insn->dst_reg * 2, alu_op, 717d9ae7f2bSJakub Kicinski insn->src_reg * 2, br_mask, insn->off); 718d9ae7f2bSJakub Kicinski wrp_test_reg_one(nfp_prog, insn->dst_reg * 2 + 1, alu_op, 719d9ae7f2bSJakub Kicinski insn->src_reg * 2 + 1, br_mask, insn->off); 720d9ae7f2bSJakub Kicinski 721d9ae7f2bSJakub Kicinski return 0; 722d9ae7f2bSJakub Kicinski } 723d9ae7f2bSJakub Kicinski 724d9ae7f2bSJakub Kicinski static int 725d9ae7f2bSJakub Kicinski wrp_cmp_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 726d9ae7f2bSJakub Kicinski enum br_mask br_mask, bool swap) 727d9ae7f2bSJakub Kicinski { 728d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 729d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 730d9ae7f2bSJakub Kicinski u8 reg = insn->dst_reg * 2; 731b3f868dfSJakub Kicinski swreg tmp_reg; 732d9ae7f2bSJakub Kicinski 733d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 734d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 735d9ae7f2bSJakub Kicinski 736d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 737d9ae7f2bSJakub Kicinski if (!swap) 738d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(reg), ALU_OP_SUB, tmp_reg); 739d9ae7f2bSJakub Kicinski else 740d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), tmp_reg, ALU_OP_SUB, reg_a(reg)); 741d9ae7f2bSJakub Kicinski 742d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 743d9ae7f2bSJakub Kicinski if (!swap) 744d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 745d9ae7f2bSJakub Kicinski reg_a(reg + 1), ALU_OP_SUB_C, tmp_reg); 746d9ae7f2bSJakub Kicinski else 747d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 748d9ae7f2bSJakub Kicinski tmp_reg, ALU_OP_SUB_C, reg_a(reg + 1)); 749d9ae7f2bSJakub Kicinski 750d9ae7f2bSJakub Kicinski emit_br(nfp_prog, br_mask, insn->off, 0); 751d9ae7f2bSJakub Kicinski 752d9ae7f2bSJakub Kicinski return 0; 753d9ae7f2bSJakub Kicinski } 754d9ae7f2bSJakub Kicinski 755d9ae7f2bSJakub Kicinski static int 756d9ae7f2bSJakub Kicinski wrp_cmp_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 757d9ae7f2bSJakub Kicinski enum br_mask br_mask, bool swap) 758d9ae7f2bSJakub Kicinski { 759d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 76026fa818dSJakub Kicinski u8 areg, breg; 76126fa818dSJakub Kicinski 76226fa818dSJakub Kicinski areg = insn->dst_reg * 2; 76326fa818dSJakub Kicinski breg = insn->src_reg * 2; 764d9ae7f2bSJakub Kicinski 765d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 766d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 767d9ae7f2bSJakub Kicinski 768d9ae7f2bSJakub Kicinski if (swap) { 769d9ae7f2bSJakub Kicinski areg ^= breg; 770d9ae7f2bSJakub Kicinski breg ^= areg; 771d9ae7f2bSJakub Kicinski areg ^= breg; 772d9ae7f2bSJakub Kicinski } 773d9ae7f2bSJakub Kicinski 774d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(areg), ALU_OP_SUB, reg_b(breg)); 775d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 776d9ae7f2bSJakub Kicinski reg_a(areg + 1), ALU_OP_SUB_C, reg_b(breg + 1)); 777d9ae7f2bSJakub Kicinski emit_br(nfp_prog, br_mask, insn->off, 0); 778d9ae7f2bSJakub Kicinski 779d9ae7f2bSJakub Kicinski return 0; 780d9ae7f2bSJakub Kicinski } 781d9ae7f2bSJakub Kicinski 7823119d1fdSJakub Kicinski static void wrp_end32(struct nfp_prog *nfp_prog, swreg reg_in, u8 gpr_out) 7833119d1fdSJakub Kicinski { 7843119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr_out), 0xf, reg_in, 7853119d1fdSJakub Kicinski SHF_SC_R_ROT, 8); 7863119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr_out), 0x5, reg_a(gpr_out), 7873119d1fdSJakub Kicinski SHF_SC_R_ROT, 16); 7883119d1fdSJakub Kicinski } 7893119d1fdSJakub Kicinski 790d9ae7f2bSJakub Kicinski /* --- Callbacks --- */ 791d9ae7f2bSJakub Kicinski static int mov_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 792d9ae7f2bSJakub Kicinski { 793d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 794d9ae7f2bSJakub Kicinski 795d9ae7f2bSJakub Kicinski wrp_reg_mov(nfp_prog, insn->dst_reg * 2, insn->src_reg * 2); 796d9ae7f2bSJakub Kicinski wrp_reg_mov(nfp_prog, insn->dst_reg * 2 + 1, insn->src_reg * 2 + 1); 797d9ae7f2bSJakub Kicinski 798d9ae7f2bSJakub Kicinski return 0; 799d9ae7f2bSJakub Kicinski } 800d9ae7f2bSJakub Kicinski 801d9ae7f2bSJakub Kicinski static int mov_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 802d9ae7f2bSJakub Kicinski { 803d9ae7f2bSJakub Kicinski u64 imm = meta->insn.imm; /* sign extend */ 804d9ae7f2bSJakub Kicinski 805d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2), imm & ~0U); 806d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), imm >> 32); 807d9ae7f2bSJakub Kicinski 808d9ae7f2bSJakub Kicinski return 0; 809d9ae7f2bSJakub Kicinski } 810d9ae7f2bSJakub Kicinski 811d9ae7f2bSJakub Kicinski static int xor_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 812d9ae7f2bSJakub Kicinski { 813d9ae7f2bSJakub Kicinski return wrp_alu64_reg(nfp_prog, meta, ALU_OP_XOR); 814d9ae7f2bSJakub Kicinski } 815d9ae7f2bSJakub Kicinski 816d9ae7f2bSJakub Kicinski static int xor_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 817d9ae7f2bSJakub Kicinski { 818d9ae7f2bSJakub Kicinski return wrp_alu64_imm(nfp_prog, meta, ALU_OP_XOR, !meta->insn.imm); 819d9ae7f2bSJakub Kicinski } 820d9ae7f2bSJakub Kicinski 821d9ae7f2bSJakub Kicinski static int and_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 822d9ae7f2bSJakub Kicinski { 823d9ae7f2bSJakub Kicinski return wrp_alu64_reg(nfp_prog, meta, ALU_OP_AND); 824d9ae7f2bSJakub Kicinski } 825d9ae7f2bSJakub Kicinski 826d9ae7f2bSJakub Kicinski static int and_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 827d9ae7f2bSJakub Kicinski { 828d9ae7f2bSJakub Kicinski return wrp_alu64_imm(nfp_prog, meta, ALU_OP_AND, !~meta->insn.imm); 829d9ae7f2bSJakub Kicinski } 830d9ae7f2bSJakub Kicinski 831d9ae7f2bSJakub Kicinski static int or_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 832d9ae7f2bSJakub Kicinski { 833d9ae7f2bSJakub Kicinski return wrp_alu64_reg(nfp_prog, meta, ALU_OP_OR); 834d9ae7f2bSJakub Kicinski } 835d9ae7f2bSJakub Kicinski 836d9ae7f2bSJakub Kicinski static int or_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 837d9ae7f2bSJakub Kicinski { 838d9ae7f2bSJakub Kicinski return wrp_alu64_imm(nfp_prog, meta, ALU_OP_OR, !meta->insn.imm); 839d9ae7f2bSJakub Kicinski } 840d9ae7f2bSJakub Kicinski 841d9ae7f2bSJakub Kicinski static int add_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 842d9ae7f2bSJakub Kicinski { 843d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 844d9ae7f2bSJakub Kicinski 845d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2), 846d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_ADD, 847d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2)); 848d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 849d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_ADD_C, 850d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2 + 1)); 851d9ae7f2bSJakub Kicinski 852d9ae7f2bSJakub Kicinski return 0; 853d9ae7f2bSJakub Kicinski } 854d9ae7f2bSJakub Kicinski 855d9ae7f2bSJakub Kicinski static int add_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 856d9ae7f2bSJakub Kicinski { 857d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 858d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 859d9ae7f2bSJakub Kicinski 860d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, ALU_OP_ADD, imm & ~0U); 861d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2 + 1, ALU_OP_ADD_C, imm >> 32); 862d9ae7f2bSJakub Kicinski 863d9ae7f2bSJakub Kicinski return 0; 864d9ae7f2bSJakub Kicinski } 865d9ae7f2bSJakub Kicinski 866d9ae7f2bSJakub Kicinski static int sub_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 867d9ae7f2bSJakub Kicinski { 868d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 869d9ae7f2bSJakub Kicinski 870d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2), 871d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_SUB, 872d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2)); 873d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 874d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_SUB_C, 875d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2 + 1)); 876d9ae7f2bSJakub Kicinski 877d9ae7f2bSJakub Kicinski return 0; 878d9ae7f2bSJakub Kicinski } 879d9ae7f2bSJakub Kicinski 880d9ae7f2bSJakub Kicinski static int sub_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 881d9ae7f2bSJakub Kicinski { 882d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 883d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 884d9ae7f2bSJakub Kicinski 885d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, ALU_OP_SUB, imm & ~0U); 886d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2 + 1, ALU_OP_SUB_C, imm >> 32); 887d9ae7f2bSJakub Kicinski 888d9ae7f2bSJakub Kicinski return 0; 889d9ae7f2bSJakub Kicinski } 890d9ae7f2bSJakub Kicinski 891d9ae7f2bSJakub Kicinski static int shl_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 892d9ae7f2bSJakub Kicinski { 893d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 8943cae1319SJakub Kicinski u8 dst = insn->dst_reg * 2; 895d9ae7f2bSJakub Kicinski 8963cae1319SJakub Kicinski if (insn->imm < 32) { 8973cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst + 1), 8983cae1319SJakub Kicinski reg_a(dst + 1), SHF_OP_NONE, reg_b(dst), 8993cae1319SJakub Kicinski SHF_SC_R_DSHF, 32 - insn->imm); 9003cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst), 9013cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst), 9023cae1319SJakub Kicinski SHF_SC_L_SHF, insn->imm); 9033cae1319SJakub Kicinski } else if (insn->imm == 32) { 9043cae1319SJakub Kicinski wrp_reg_mov(nfp_prog, dst + 1, dst); 9053cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), 0); 9063cae1319SJakub Kicinski } else if (insn->imm > 32) { 9073cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst + 1), 9083cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst), 9093cae1319SJakub Kicinski SHF_SC_L_SHF, insn->imm - 32); 9103cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), 0); 9113cae1319SJakub Kicinski } 912d9ae7f2bSJakub Kicinski 913d9ae7f2bSJakub Kicinski return 0; 914d9ae7f2bSJakub Kicinski } 915d9ae7f2bSJakub Kicinski 916d9ae7f2bSJakub Kicinski static int shr_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 917d9ae7f2bSJakub Kicinski { 918d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 9193cae1319SJakub Kicinski u8 dst = insn->dst_reg * 2; 920d9ae7f2bSJakub Kicinski 9213cae1319SJakub Kicinski if (insn->imm < 32) { 9223cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst), 9233cae1319SJakub Kicinski reg_a(dst + 1), SHF_OP_NONE, reg_b(dst), 9243cae1319SJakub Kicinski SHF_SC_R_DSHF, insn->imm); 9253cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst + 1), 9263cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst + 1), 9273cae1319SJakub Kicinski SHF_SC_R_SHF, insn->imm); 9283cae1319SJakub Kicinski } else if (insn->imm == 32) { 9293cae1319SJakub Kicinski wrp_reg_mov(nfp_prog, dst, dst + 1); 9303cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst + 1), 0); 9313cae1319SJakub Kicinski } else if (insn->imm > 32) { 9323cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst), 9333cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst + 1), 9343cae1319SJakub Kicinski SHF_SC_R_SHF, insn->imm - 32); 9353cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst + 1), 0); 9363cae1319SJakub Kicinski } 937d9ae7f2bSJakub Kicinski 938d9ae7f2bSJakub Kicinski return 0; 939d9ae7f2bSJakub Kicinski } 940d9ae7f2bSJakub Kicinski 941d9ae7f2bSJakub Kicinski static int mov_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 942d9ae7f2bSJakub Kicinski { 943d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 944d9ae7f2bSJakub Kicinski 945d9ae7f2bSJakub Kicinski wrp_reg_mov(nfp_prog, insn->dst_reg * 2, insn->src_reg * 2); 946d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 947d9ae7f2bSJakub Kicinski 948d9ae7f2bSJakub Kicinski return 0; 949d9ae7f2bSJakub Kicinski } 950d9ae7f2bSJakub Kicinski 951d9ae7f2bSJakub Kicinski static int mov_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 952d9ae7f2bSJakub Kicinski { 953d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 954d9ae7f2bSJakub Kicinski 955d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2), insn->imm); 956d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 957d9ae7f2bSJakub Kicinski 958d9ae7f2bSJakub Kicinski return 0; 959d9ae7f2bSJakub Kicinski } 960d9ae7f2bSJakub Kicinski 961d9ae7f2bSJakub Kicinski static int xor_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 962d9ae7f2bSJakub Kicinski { 963d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_XOR); 964d9ae7f2bSJakub Kicinski } 965d9ae7f2bSJakub Kicinski 966d9ae7f2bSJakub Kicinski static int xor_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 967d9ae7f2bSJakub Kicinski { 968d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_XOR, !~meta->insn.imm); 969d9ae7f2bSJakub Kicinski } 970d9ae7f2bSJakub Kicinski 971d9ae7f2bSJakub Kicinski static int and_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 972d9ae7f2bSJakub Kicinski { 973d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_AND); 974d9ae7f2bSJakub Kicinski } 975d9ae7f2bSJakub Kicinski 976d9ae7f2bSJakub Kicinski static int and_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 977d9ae7f2bSJakub Kicinski { 978d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_AND, !~meta->insn.imm); 979d9ae7f2bSJakub Kicinski } 980d9ae7f2bSJakub Kicinski 981d9ae7f2bSJakub Kicinski static int or_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 982d9ae7f2bSJakub Kicinski { 983d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_OR); 984d9ae7f2bSJakub Kicinski } 985d9ae7f2bSJakub Kicinski 986d9ae7f2bSJakub Kicinski static int or_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 987d9ae7f2bSJakub Kicinski { 988d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_OR, !meta->insn.imm); 989d9ae7f2bSJakub Kicinski } 990d9ae7f2bSJakub Kicinski 991d9ae7f2bSJakub Kicinski static int add_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 992d9ae7f2bSJakub Kicinski { 993d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_ADD); 994d9ae7f2bSJakub Kicinski } 995d9ae7f2bSJakub Kicinski 996d9ae7f2bSJakub Kicinski static int add_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 997d9ae7f2bSJakub Kicinski { 998d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_ADD, !meta->insn.imm); 999d9ae7f2bSJakub Kicinski } 1000d9ae7f2bSJakub Kicinski 1001d9ae7f2bSJakub Kicinski static int sub_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1002d9ae7f2bSJakub Kicinski { 1003d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_SUB); 1004d9ae7f2bSJakub Kicinski } 1005d9ae7f2bSJakub Kicinski 1006d9ae7f2bSJakub Kicinski static int sub_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1007d9ae7f2bSJakub Kicinski { 1008d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_SUB, !meta->insn.imm); 1009d9ae7f2bSJakub Kicinski } 1010d9ae7f2bSJakub Kicinski 1011d9ae7f2bSJakub Kicinski static int shl_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1012d9ae7f2bSJakub Kicinski { 1013d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1014d9ae7f2bSJakub Kicinski 1015d9ae7f2bSJakub Kicinski if (!insn->imm) 1016d9ae7f2bSJakub Kicinski return 1; /* TODO: zero shift means indirect */ 1017d9ae7f2bSJakub Kicinski 1018d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_both(insn->dst_reg * 2), 1019d9ae7f2bSJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(insn->dst_reg * 2), 1020d9ae7f2bSJakub Kicinski SHF_SC_L_SHF, insn->imm); 1021d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 1022d9ae7f2bSJakub Kicinski 1023d9ae7f2bSJakub Kicinski return 0; 1024d9ae7f2bSJakub Kicinski } 1025d9ae7f2bSJakub Kicinski 10263119d1fdSJakub Kicinski static int end_reg32(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 10273119d1fdSJakub Kicinski { 10283119d1fdSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 10293119d1fdSJakub Kicinski u8 gpr = insn->dst_reg * 2; 10303119d1fdSJakub Kicinski 10313119d1fdSJakub Kicinski switch (insn->imm) { 10323119d1fdSJakub Kicinski case 16: 10333119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr), 0x9, reg_b(gpr), 10343119d1fdSJakub Kicinski SHF_SC_R_ROT, 8); 10353119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr), 0xe, reg_a(gpr), 10363119d1fdSJakub Kicinski SHF_SC_R_SHF, 16); 10373119d1fdSJakub Kicinski 10383119d1fdSJakub Kicinski wrp_immed(nfp_prog, reg_both(gpr + 1), 0); 10393119d1fdSJakub Kicinski break; 10403119d1fdSJakub Kicinski case 32: 10413119d1fdSJakub Kicinski wrp_end32(nfp_prog, reg_a(gpr), gpr); 10423119d1fdSJakub Kicinski wrp_immed(nfp_prog, reg_both(gpr + 1), 0); 10433119d1fdSJakub Kicinski break; 10443119d1fdSJakub Kicinski case 64: 10453119d1fdSJakub Kicinski wrp_mov(nfp_prog, imm_a(nfp_prog), reg_b(gpr + 1)); 10463119d1fdSJakub Kicinski 10473119d1fdSJakub Kicinski wrp_end32(nfp_prog, reg_a(gpr), gpr + 1); 10483119d1fdSJakub Kicinski wrp_end32(nfp_prog, imm_a(nfp_prog), gpr); 10493119d1fdSJakub Kicinski break; 10503119d1fdSJakub Kicinski } 10513119d1fdSJakub Kicinski 10523119d1fdSJakub Kicinski return 0; 10533119d1fdSJakub Kicinski } 10543119d1fdSJakub Kicinski 1055d9ae7f2bSJakub Kicinski static int imm_ld8_part2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1056d9ae7f2bSJakub Kicinski { 1057d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(nfp_meta_prev(meta)->insn.dst_reg * 2 + 1), 1058d9ae7f2bSJakub Kicinski meta->insn.imm); 1059d9ae7f2bSJakub Kicinski 1060d9ae7f2bSJakub Kicinski return 0; 1061d9ae7f2bSJakub Kicinski } 1062d9ae7f2bSJakub Kicinski 1063d9ae7f2bSJakub Kicinski static int imm_ld8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1064d9ae7f2bSJakub Kicinski { 1065d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1066d9ae7f2bSJakub Kicinski 1067d9ae7f2bSJakub Kicinski meta->double_cb = imm_ld8_part2; 1068d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2), insn->imm); 1069d9ae7f2bSJakub Kicinski 1070d9ae7f2bSJakub Kicinski return 0; 1071d9ae7f2bSJakub Kicinski } 1072d9ae7f2bSJakub Kicinski 1073d9ae7f2bSJakub Kicinski static int data_ld1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1074d9ae7f2bSJakub Kicinski { 1075d9ae7f2bSJakub Kicinski return construct_data_ld(nfp_prog, meta->insn.imm, 1); 1076d9ae7f2bSJakub Kicinski } 1077d9ae7f2bSJakub Kicinski 1078d9ae7f2bSJakub Kicinski static int data_ld2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1079d9ae7f2bSJakub Kicinski { 1080d9ae7f2bSJakub Kicinski return construct_data_ld(nfp_prog, meta->insn.imm, 2); 1081d9ae7f2bSJakub Kicinski } 1082d9ae7f2bSJakub Kicinski 1083d9ae7f2bSJakub Kicinski static int data_ld4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1084d9ae7f2bSJakub Kicinski { 1085d9ae7f2bSJakub Kicinski return construct_data_ld(nfp_prog, meta->insn.imm, 4); 1086d9ae7f2bSJakub Kicinski } 1087d9ae7f2bSJakub Kicinski 1088d9ae7f2bSJakub Kicinski static int data_ind_ld1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1089d9ae7f2bSJakub Kicinski { 1090d9ae7f2bSJakub Kicinski return construct_data_ind_ld(nfp_prog, meta->insn.imm, 10910a793977SJakub Kicinski meta->insn.src_reg * 2, 1); 1092d9ae7f2bSJakub Kicinski } 1093d9ae7f2bSJakub Kicinski 1094d9ae7f2bSJakub Kicinski static int data_ind_ld2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1095d9ae7f2bSJakub Kicinski { 1096d9ae7f2bSJakub Kicinski return construct_data_ind_ld(nfp_prog, meta->insn.imm, 10970a793977SJakub Kicinski meta->insn.src_reg * 2, 2); 1098d9ae7f2bSJakub Kicinski } 1099d9ae7f2bSJakub Kicinski 1100d9ae7f2bSJakub Kicinski static int data_ind_ld4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1101d9ae7f2bSJakub Kicinski { 1102d9ae7f2bSJakub Kicinski return construct_data_ind_ld(nfp_prog, meta->insn.imm, 11030a793977SJakub Kicinski meta->insn.src_reg * 2, 4); 1104d9ae7f2bSJakub Kicinski } 1105d9ae7f2bSJakub Kicinski 1106943c57b9SJakub Kicinski static int mem_ldx_skb(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1107943c57b9SJakub Kicinski u8 size) 1108d9ae7f2bSJakub Kicinski { 1109943c57b9SJakub Kicinski switch (meta->insn.off) { 1110943c57b9SJakub Kicinski case offsetof(struct sk_buff, len): 1111943c57b9SJakub Kicinski if (size != FIELD_SIZEOF(struct sk_buff, len)) 1112943c57b9SJakub Kicinski return -EOPNOTSUPP; 1113c000dfb5SJakub Kicinski wrp_mov(nfp_prog, 1114c000dfb5SJakub Kicinski reg_both(meta->insn.dst_reg * 2), plen_reg(nfp_prog)); 1115943c57b9SJakub Kicinski break; 1116943c57b9SJakub Kicinski default: 1117d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1118943c57b9SJakub Kicinski } 1119943c57b9SJakub Kicinski 1120943c57b9SJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 1121d9ae7f2bSJakub Kicinski 1122d9ae7f2bSJakub Kicinski return 0; 1123d9ae7f2bSJakub Kicinski } 1124d9ae7f2bSJakub Kicinski 1125943c57b9SJakub Kicinski static int mem_ldx_xdp(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1126943c57b9SJakub Kicinski u8 size) 1127d9ae7f2bSJakub Kicinski { 1128b3f868dfSJakub Kicinski swreg dst = reg_both(meta->insn.dst_reg * 2); 1129d9ae7f2bSJakub Kicinski 1130943c57b9SJakub Kicinski if (size != sizeof(void *)) 1131943c57b9SJakub Kicinski return -EINVAL; 1132d9ae7f2bSJakub Kicinski 1133943c57b9SJakub Kicinski switch (meta->insn.off) { 1134943c57b9SJakub Kicinski case offsetof(struct xdp_buff, data): 1135c000dfb5SJakub Kicinski wrp_mov(nfp_prog, dst, pptr_reg(nfp_prog)); 1136943c57b9SJakub Kicinski break; 1137943c57b9SJakub Kicinski case offsetof(struct xdp_buff, data_end): 1138943c57b9SJakub Kicinski emit_alu(nfp_prog, dst, 1139943c57b9SJakub Kicinski plen_reg(nfp_prog), ALU_OP_ADD, pptr_reg(nfp_prog)); 1140943c57b9SJakub Kicinski break; 1141943c57b9SJakub Kicinski default: 1142943c57b9SJakub Kicinski return -EOPNOTSUPP; 1143943c57b9SJakub Kicinski } 1144d9ae7f2bSJakub Kicinski 1145943c57b9SJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 1146d9ae7f2bSJakub Kicinski 1147d9ae7f2bSJakub Kicinski return 0; 1148d9ae7f2bSJakub Kicinski } 1149d9ae7f2bSJakub Kicinski 11502ca71441SJakub Kicinski static int 11512ca71441SJakub Kicinski mem_ldx_data(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 11522ca71441SJakub Kicinski unsigned int size) 11532ca71441SJakub Kicinski { 11542ca71441SJakub Kicinski swreg tmp_reg; 11552ca71441SJakub Kicinski 11562ca71441SJakub Kicinski tmp_reg = re_load_imm_any(nfp_prog, meta->insn.off, imm_b(nfp_prog)); 11572ca71441SJakub Kicinski 11582ca71441SJakub Kicinski return data_ld_host_order(nfp_prog, meta->insn.src_reg * 2, tmp_reg, 11592ca71441SJakub Kicinski meta->insn.dst_reg * 2, size); 11602ca71441SJakub Kicinski } 11612ca71441SJakub Kicinski 11622ca71441SJakub Kicinski static int 11632ca71441SJakub Kicinski mem_ldx(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 11642ca71441SJakub Kicinski unsigned int size) 11652ca71441SJakub Kicinski { 11662ca71441SJakub Kicinski if (meta->ptr.type == PTR_TO_CTX) { 11672ca71441SJakub Kicinski if (nfp_prog->act == NN_ACT_XDP) 11682ca71441SJakub Kicinski return mem_ldx_xdp(nfp_prog, meta, size); 11692ca71441SJakub Kicinski else 11702ca71441SJakub Kicinski return mem_ldx_skb(nfp_prog, meta, size); 11712ca71441SJakub Kicinski } 11722ca71441SJakub Kicinski 11732ca71441SJakub Kicinski if (meta->ptr.type == PTR_TO_PACKET) 11742ca71441SJakub Kicinski return mem_ldx_data(nfp_prog, meta, size); 11752ca71441SJakub Kicinski 11762ca71441SJakub Kicinski return -EOPNOTSUPP; 11772ca71441SJakub Kicinski } 11782ca71441SJakub Kicinski 11792ca71441SJakub Kicinski static int mem_ldx1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 11802ca71441SJakub Kicinski { 11812ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 1); 11822ca71441SJakub Kicinski } 11832ca71441SJakub Kicinski 11842ca71441SJakub Kicinski static int mem_ldx2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 11852ca71441SJakub Kicinski { 11862ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 2); 11872ca71441SJakub Kicinski } 11882ca71441SJakub Kicinski 1189d9ae7f2bSJakub Kicinski static int mem_ldx4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1190d9ae7f2bSJakub Kicinski { 11912ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 4); 11922ca71441SJakub Kicinski } 11932ca71441SJakub Kicinski 11942ca71441SJakub Kicinski static int mem_ldx8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 11952ca71441SJakub Kicinski { 11962ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 8); 1197d9ae7f2bSJakub Kicinski } 1198d9ae7f2bSJakub Kicinski 1199d9ae7f2bSJakub Kicinski static int mem_stx4_skb(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1200d9ae7f2bSJakub Kicinski { 1201d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1202d9ae7f2bSJakub Kicinski } 1203d9ae7f2bSJakub Kicinski 1204d9ae7f2bSJakub Kicinski static int mem_stx4_xdp(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1205d9ae7f2bSJakub Kicinski { 1206d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1207d9ae7f2bSJakub Kicinski } 1208d9ae7f2bSJakub Kicinski 1209d9ae7f2bSJakub Kicinski static int mem_stx4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1210d9ae7f2bSJakub Kicinski { 12112ca71441SJakub Kicinski if (meta->ptr.type == PTR_TO_PACKET) 12122ca71441SJakub Kicinski return -EOPNOTSUPP; 12132ca71441SJakub Kicinski 1214d9ae7f2bSJakub Kicinski if (nfp_prog->act == NN_ACT_XDP) 1215d9ae7f2bSJakub Kicinski return mem_stx4_xdp(nfp_prog, meta); 1216d9ae7f2bSJakub Kicinski return mem_stx4_skb(nfp_prog, meta); 1217d9ae7f2bSJakub Kicinski } 1218d9ae7f2bSJakub Kicinski 1219d9ae7f2bSJakub Kicinski static int jump(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1220d9ae7f2bSJakub Kicinski { 1221d9ae7f2bSJakub Kicinski if (meta->insn.off < 0) /* TODO */ 1222d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1223d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_UNC, meta->insn.off, 0); 1224d9ae7f2bSJakub Kicinski 1225d9ae7f2bSJakub Kicinski return 0; 1226d9ae7f2bSJakub Kicinski } 1227d9ae7f2bSJakub Kicinski 1228d9ae7f2bSJakub Kicinski static int jeq_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1229d9ae7f2bSJakub Kicinski { 1230d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1231d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1232b3f868dfSJakub Kicinski swreg or1, or2, tmp_reg; 1233b3f868dfSJakub Kicinski 1234b3f868dfSJakub Kicinski or1 = reg_a(insn->dst_reg * 2); 1235b3f868dfSJakub Kicinski or2 = reg_b(insn->dst_reg * 2 + 1); 1236d9ae7f2bSJakub Kicinski 1237d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 1238d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1239d9ae7f2bSJakub Kicinski 1240d9ae7f2bSJakub Kicinski if (imm & ~0U) { 1241d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 1242d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_a(nfp_prog), 1243d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_XOR, tmp_reg); 1244d9ae7f2bSJakub Kicinski or1 = imm_a(nfp_prog); 1245d9ae7f2bSJakub Kicinski } 1246d9ae7f2bSJakub Kicinski 1247d9ae7f2bSJakub Kicinski if (imm >> 32) { 1248d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 1249d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), 1250d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_XOR, tmp_reg); 1251d9ae7f2bSJakub Kicinski or2 = imm_b(nfp_prog); 1252d9ae7f2bSJakub Kicinski } 1253d9ae7f2bSJakub Kicinski 1254d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), or1, ALU_OP_OR, or2); 1255d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BEQ, insn->off, 0); 1256d9ae7f2bSJakub Kicinski 1257d9ae7f2bSJakub Kicinski return 0; 1258d9ae7f2bSJakub Kicinski } 1259d9ae7f2bSJakub Kicinski 1260d9ae7f2bSJakub Kicinski static int jgt_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1261d9ae7f2bSJakub Kicinski { 126226fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BLO, true); 1263d9ae7f2bSJakub Kicinski } 1264d9ae7f2bSJakub Kicinski 1265d9ae7f2bSJakub Kicinski static int jge_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1266d9ae7f2bSJakub Kicinski { 126726fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BHS, false); 1268d9ae7f2bSJakub Kicinski } 1269d9ae7f2bSJakub Kicinski 12705dd294d4SDaniel Borkmann static int jlt_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 12715dd294d4SDaniel Borkmann { 127226fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BLO, false); 12735dd294d4SDaniel Borkmann } 12745dd294d4SDaniel Borkmann 12755dd294d4SDaniel Borkmann static int jle_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 12765dd294d4SDaniel Borkmann { 127726fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BHS, true); 12785dd294d4SDaniel Borkmann } 12795dd294d4SDaniel Borkmann 1280d9ae7f2bSJakub Kicinski static int jset_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1281d9ae7f2bSJakub Kicinski { 1282d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1283d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1284b3f868dfSJakub Kicinski swreg tmp_reg; 1285d9ae7f2bSJakub Kicinski 1286d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 1287d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1288d9ae7f2bSJakub Kicinski 1289d9ae7f2bSJakub Kicinski if (!imm) { 1290d9ae7f2bSJakub Kicinski meta->skip = true; 1291d9ae7f2bSJakub Kicinski return 0; 1292d9ae7f2bSJakub Kicinski } 1293d9ae7f2bSJakub Kicinski 1294d9ae7f2bSJakub Kicinski if (imm & ~0U) { 1295d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 1296d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1297d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_AND, tmp_reg); 1298d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1299d9ae7f2bSJakub Kicinski } 1300d9ae7f2bSJakub Kicinski 1301d9ae7f2bSJakub Kicinski if (imm >> 32) { 1302d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 1303d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1304d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_AND, tmp_reg); 1305d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1306d9ae7f2bSJakub Kicinski } 1307d9ae7f2bSJakub Kicinski 1308d9ae7f2bSJakub Kicinski return 0; 1309d9ae7f2bSJakub Kicinski } 1310d9ae7f2bSJakub Kicinski 1311d9ae7f2bSJakub Kicinski static int jne_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1312d9ae7f2bSJakub Kicinski { 1313d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1314d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1315b3f868dfSJakub Kicinski swreg tmp_reg; 1316d9ae7f2bSJakub Kicinski 1317d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 1318d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1319d9ae7f2bSJakub Kicinski 1320d9ae7f2bSJakub Kicinski if (!imm) { 1321d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(insn->dst_reg * 2), 1322d9ae7f2bSJakub Kicinski ALU_OP_OR, reg_b(insn->dst_reg * 2 + 1)); 1323d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 132482837370SJakub Kicinski return 0; 1325d9ae7f2bSJakub Kicinski } 1326d9ae7f2bSJakub Kicinski 1327d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 1328d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1329d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_XOR, tmp_reg); 1330d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1331d9ae7f2bSJakub Kicinski 1332d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 1333d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1334d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_XOR, tmp_reg); 1335d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1336d9ae7f2bSJakub Kicinski 1337d9ae7f2bSJakub Kicinski return 0; 1338d9ae7f2bSJakub Kicinski } 1339d9ae7f2bSJakub Kicinski 1340d9ae7f2bSJakub Kicinski static int jeq_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1341d9ae7f2bSJakub Kicinski { 1342d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1343d9ae7f2bSJakub Kicinski 1344d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 1345d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1346d9ae7f2bSJakub Kicinski 1347d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_a(nfp_prog), reg_a(insn->dst_reg * 2), 1348d9ae7f2bSJakub Kicinski ALU_OP_XOR, reg_b(insn->src_reg * 2)); 1349d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), reg_a(insn->dst_reg * 2 + 1), 1350d9ae7f2bSJakub Kicinski ALU_OP_XOR, reg_b(insn->src_reg * 2 + 1)); 1351d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1352d9ae7f2bSJakub Kicinski imm_a(nfp_prog), ALU_OP_OR, imm_b(nfp_prog)); 1353d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BEQ, insn->off, 0); 1354d9ae7f2bSJakub Kicinski 1355d9ae7f2bSJakub Kicinski return 0; 1356d9ae7f2bSJakub Kicinski } 1357d9ae7f2bSJakub Kicinski 1358d9ae7f2bSJakub Kicinski static int jgt_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1359d9ae7f2bSJakub Kicinski { 136026fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BLO, true); 1361d9ae7f2bSJakub Kicinski } 1362d9ae7f2bSJakub Kicinski 1363d9ae7f2bSJakub Kicinski static int jge_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1364d9ae7f2bSJakub Kicinski { 136526fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BHS, false); 1366d9ae7f2bSJakub Kicinski } 1367d9ae7f2bSJakub Kicinski 13685dd294d4SDaniel Borkmann static int jlt_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 13695dd294d4SDaniel Borkmann { 137026fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BLO, false); 13715dd294d4SDaniel Borkmann } 13725dd294d4SDaniel Borkmann 13735dd294d4SDaniel Borkmann static int jle_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 13745dd294d4SDaniel Borkmann { 137526fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BHS, true); 13765dd294d4SDaniel Borkmann } 13775dd294d4SDaniel Borkmann 1378d9ae7f2bSJakub Kicinski static int jset_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1379d9ae7f2bSJakub Kicinski { 1380d9ae7f2bSJakub Kicinski return wrp_test_reg(nfp_prog, meta, ALU_OP_AND, BR_BNE); 1381d9ae7f2bSJakub Kicinski } 1382d9ae7f2bSJakub Kicinski 1383d9ae7f2bSJakub Kicinski static int jne_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1384d9ae7f2bSJakub Kicinski { 1385d9ae7f2bSJakub Kicinski return wrp_test_reg(nfp_prog, meta, ALU_OP_XOR, BR_BNE); 1386d9ae7f2bSJakub Kicinski } 1387d9ae7f2bSJakub Kicinski 1388d9ae7f2bSJakub Kicinski static int goto_out(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1389d9ae7f2bSJakub Kicinski { 1390d9ae7f2bSJakub Kicinski wrp_br_special(nfp_prog, BR_UNC, OP_BR_GO_OUT); 1391d9ae7f2bSJakub Kicinski 1392d9ae7f2bSJakub Kicinski return 0; 1393d9ae7f2bSJakub Kicinski } 1394d9ae7f2bSJakub Kicinski 1395d9ae7f2bSJakub Kicinski static const instr_cb_t instr_cb[256] = { 1396d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_MOV | BPF_X] = mov_reg64, 1397d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_MOV | BPF_K] = mov_imm64, 1398d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_XOR | BPF_X] = xor_reg64, 1399d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_XOR | BPF_K] = xor_imm64, 1400d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_AND | BPF_X] = and_reg64, 1401d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_AND | BPF_K] = and_imm64, 1402d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_OR | BPF_X] = or_reg64, 1403d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_OR | BPF_K] = or_imm64, 1404d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_ADD | BPF_X] = add_reg64, 1405d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_ADD | BPF_K] = add_imm64, 1406d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_SUB | BPF_X] = sub_reg64, 1407d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_SUB | BPF_K] = sub_imm64, 1408d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_LSH | BPF_K] = shl_imm64, 1409d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_RSH | BPF_K] = shr_imm64, 1410d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_MOV | BPF_X] = mov_reg, 1411d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_MOV | BPF_K] = mov_imm, 1412d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_XOR | BPF_X] = xor_reg, 1413d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_XOR | BPF_K] = xor_imm, 1414d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_AND | BPF_X] = and_reg, 1415d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_AND | BPF_K] = and_imm, 1416d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_OR | BPF_X] = or_reg, 1417d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_OR | BPF_K] = or_imm, 1418d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_ADD | BPF_X] = add_reg, 1419d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_ADD | BPF_K] = add_imm, 1420d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_SUB | BPF_X] = sub_reg, 1421d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_SUB | BPF_K] = sub_imm, 1422d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_LSH | BPF_K] = shl_imm, 14233119d1fdSJakub Kicinski [BPF_ALU | BPF_END | BPF_X] = end_reg32, 1424d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IMM | BPF_DW] = imm_ld8, 1425d9ae7f2bSJakub Kicinski [BPF_LD | BPF_ABS | BPF_B] = data_ld1, 1426d9ae7f2bSJakub Kicinski [BPF_LD | BPF_ABS | BPF_H] = data_ld2, 1427d9ae7f2bSJakub Kicinski [BPF_LD | BPF_ABS | BPF_W] = data_ld4, 1428d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IND | BPF_B] = data_ind_ld1, 1429d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IND | BPF_H] = data_ind_ld2, 1430d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IND | BPF_W] = data_ind_ld4, 14312ca71441SJakub Kicinski [BPF_LDX | BPF_MEM | BPF_B] = mem_ldx1, 14322ca71441SJakub Kicinski [BPF_LDX | BPF_MEM | BPF_H] = mem_ldx2, 1433d9ae7f2bSJakub Kicinski [BPF_LDX | BPF_MEM | BPF_W] = mem_ldx4, 14342ca71441SJakub Kicinski [BPF_LDX | BPF_MEM | BPF_DW] = mem_ldx8, 1435d9ae7f2bSJakub Kicinski [BPF_STX | BPF_MEM | BPF_W] = mem_stx4, 1436d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JA | BPF_K] = jump, 1437d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JEQ | BPF_K] = jeq_imm, 1438d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGT | BPF_K] = jgt_imm, 1439d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGE | BPF_K] = jge_imm, 14405dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLT | BPF_K] = jlt_imm, 14415dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLE | BPF_K] = jle_imm, 1442d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JSET | BPF_K] = jset_imm, 1443d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JNE | BPF_K] = jne_imm, 1444d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JEQ | BPF_X] = jeq_reg, 1445d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGT | BPF_X] = jgt_reg, 1446d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGE | BPF_X] = jge_reg, 14475dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLT | BPF_X] = jlt_reg, 14485dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLE | BPF_X] = jle_reg, 1449d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JSET | BPF_X] = jset_reg, 1450d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JNE | BPF_X] = jne_reg, 1451d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_EXIT] = goto_out, 1452d9ae7f2bSJakub Kicinski }; 1453d9ae7f2bSJakub Kicinski 1454d9ae7f2bSJakub Kicinski /* --- Misc code --- */ 1455d9ae7f2bSJakub Kicinski static void br_set_offset(u64 *instr, u16 offset) 1456d9ae7f2bSJakub Kicinski { 1457d9ae7f2bSJakub Kicinski u16 addr_lo, addr_hi; 1458d9ae7f2bSJakub Kicinski 1459d9ae7f2bSJakub Kicinski addr_lo = offset & (OP_BR_ADDR_LO >> __bf_shf(OP_BR_ADDR_LO)); 1460d9ae7f2bSJakub Kicinski addr_hi = offset != addr_lo; 1461d9ae7f2bSJakub Kicinski *instr &= ~(OP_BR_ADDR_HI | OP_BR_ADDR_LO); 1462d9ae7f2bSJakub Kicinski *instr |= FIELD_PREP(OP_BR_ADDR_HI, addr_hi); 1463d9ae7f2bSJakub Kicinski *instr |= FIELD_PREP(OP_BR_ADDR_LO, addr_lo); 1464d9ae7f2bSJakub Kicinski } 1465d9ae7f2bSJakub Kicinski 1466d9ae7f2bSJakub Kicinski /* --- Assembler logic --- */ 1467d9ae7f2bSJakub Kicinski static int nfp_fixup_branches(struct nfp_prog *nfp_prog) 1468d9ae7f2bSJakub Kicinski { 1469d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta, *next; 1470d9ae7f2bSJakub Kicinski u32 off, br_idx; 1471d9ae7f2bSJakub Kicinski u32 idx; 1472d9ae7f2bSJakub Kicinski 1473d9ae7f2bSJakub Kicinski nfp_for_each_insn_walk2(nfp_prog, meta, next) { 1474d9ae7f2bSJakub Kicinski if (meta->skip) 1475d9ae7f2bSJakub Kicinski continue; 1476d9ae7f2bSJakub Kicinski if (BPF_CLASS(meta->insn.code) != BPF_JMP) 1477d9ae7f2bSJakub Kicinski continue; 1478d9ae7f2bSJakub Kicinski 1479d9ae7f2bSJakub Kicinski br_idx = nfp_prog_offset_to_index(nfp_prog, next->off) - 1; 1480d9ae7f2bSJakub Kicinski if (!nfp_is_br(nfp_prog->prog[br_idx])) { 1481d9ae7f2bSJakub Kicinski pr_err("Fixup found block not ending in branch %d %02x %016llx!!\n", 1482d9ae7f2bSJakub Kicinski br_idx, meta->insn.code, nfp_prog->prog[br_idx]); 1483d9ae7f2bSJakub Kicinski return -ELOOP; 1484d9ae7f2bSJakub Kicinski } 1485d9ae7f2bSJakub Kicinski /* Leave special branches for later */ 1486d9ae7f2bSJakub Kicinski if (FIELD_GET(OP_BR_SPECIAL, nfp_prog->prog[br_idx])) 1487d9ae7f2bSJakub Kicinski continue; 1488d9ae7f2bSJakub Kicinski 1489d9ae7f2bSJakub Kicinski /* Find the target offset in assembler realm */ 1490d9ae7f2bSJakub Kicinski off = meta->insn.off; 1491d9ae7f2bSJakub Kicinski if (!off) { 1492d9ae7f2bSJakub Kicinski pr_err("Fixup found zero offset!!\n"); 1493d9ae7f2bSJakub Kicinski return -ELOOP; 1494d9ae7f2bSJakub Kicinski } 1495d9ae7f2bSJakub Kicinski 1496d9ae7f2bSJakub Kicinski while (off && nfp_meta_has_next(nfp_prog, next)) { 1497d9ae7f2bSJakub Kicinski next = nfp_meta_next(next); 1498d9ae7f2bSJakub Kicinski off--; 1499d9ae7f2bSJakub Kicinski } 1500d9ae7f2bSJakub Kicinski if (off) { 1501d9ae7f2bSJakub Kicinski pr_err("Fixup found too large jump!! %d\n", off); 1502d9ae7f2bSJakub Kicinski return -ELOOP; 1503d9ae7f2bSJakub Kicinski } 1504d9ae7f2bSJakub Kicinski 1505d9ae7f2bSJakub Kicinski if (next->skip) { 1506d9ae7f2bSJakub Kicinski pr_err("Branch landing on removed instruction!!\n"); 1507d9ae7f2bSJakub Kicinski return -ELOOP; 1508d9ae7f2bSJakub Kicinski } 1509d9ae7f2bSJakub Kicinski 1510d9ae7f2bSJakub Kicinski for (idx = nfp_prog_offset_to_index(nfp_prog, meta->off); 1511d9ae7f2bSJakub Kicinski idx <= br_idx; idx++) { 1512d9ae7f2bSJakub Kicinski if (!nfp_is_br(nfp_prog->prog[idx])) 1513d9ae7f2bSJakub Kicinski continue; 1514d9ae7f2bSJakub Kicinski br_set_offset(&nfp_prog->prog[idx], next->off); 1515d9ae7f2bSJakub Kicinski } 1516d9ae7f2bSJakub Kicinski } 1517d9ae7f2bSJakub Kicinski 1518d9ae7f2bSJakub Kicinski /* Fixup 'goto out's separately, they can be scattered around */ 1519d9ae7f2bSJakub Kicinski for (br_idx = 0; br_idx < nfp_prog->prog_len; br_idx++) { 1520d9ae7f2bSJakub Kicinski enum br_special special; 1521d9ae7f2bSJakub Kicinski 1522d9ae7f2bSJakub Kicinski if ((nfp_prog->prog[br_idx] & OP_BR_BASE_MASK) != OP_BR_BASE) 1523d9ae7f2bSJakub Kicinski continue; 1524d9ae7f2bSJakub Kicinski 1525d9ae7f2bSJakub Kicinski special = FIELD_GET(OP_BR_SPECIAL, nfp_prog->prog[br_idx]); 1526d9ae7f2bSJakub Kicinski switch (special) { 1527d9ae7f2bSJakub Kicinski case OP_BR_NORMAL: 1528d9ae7f2bSJakub Kicinski break; 1529d9ae7f2bSJakub Kicinski case OP_BR_GO_OUT: 1530d9ae7f2bSJakub Kicinski br_set_offset(&nfp_prog->prog[br_idx], 1531d9ae7f2bSJakub Kicinski nfp_prog->tgt_out); 1532d9ae7f2bSJakub Kicinski break; 1533d9ae7f2bSJakub Kicinski case OP_BR_GO_ABORT: 1534d9ae7f2bSJakub Kicinski br_set_offset(&nfp_prog->prog[br_idx], 1535d9ae7f2bSJakub Kicinski nfp_prog->tgt_abort); 1536d9ae7f2bSJakub Kicinski break; 1537d9ae7f2bSJakub Kicinski } 1538d9ae7f2bSJakub Kicinski 1539d9ae7f2bSJakub Kicinski nfp_prog->prog[br_idx] &= ~OP_BR_SPECIAL; 1540d9ae7f2bSJakub Kicinski } 1541d9ae7f2bSJakub Kicinski 1542d9ae7f2bSJakub Kicinski return 0; 1543d9ae7f2bSJakub Kicinski } 1544d9ae7f2bSJakub Kicinski 1545d9ae7f2bSJakub Kicinski static void nfp_intro(struct nfp_prog *nfp_prog) 1546d9ae7f2bSJakub Kicinski { 154718e53b6cSJakub Kicinski wrp_immed(nfp_prog, plen_reg(nfp_prog), GENMASK(13, 0)); 154818e53b6cSJakub Kicinski emit_alu(nfp_prog, plen_reg(nfp_prog), 154918e53b6cSJakub Kicinski plen_reg(nfp_prog), ALU_OP_AND, pv_len(nfp_prog)); 1550d9ae7f2bSJakub Kicinski } 1551d9ae7f2bSJakub Kicinski 1552d9ae7f2bSJakub Kicinski static void nfp_outro_tc_legacy(struct nfp_prog *nfp_prog) 1553d9ae7f2bSJakub Kicinski { 1554d9ae7f2bSJakub Kicinski const u8 act2code[] = { 1555d9ae7f2bSJakub Kicinski [NN_ACT_TC_DROP] = 0x22, 1556d9ae7f2bSJakub Kicinski [NN_ACT_TC_REDIR] = 0x24 1557d9ae7f2bSJakub Kicinski }; 1558d9ae7f2bSJakub Kicinski /* Target for aborts */ 1559d9ae7f2bSJakub Kicinski nfp_prog->tgt_abort = nfp_prog_current_offset(nfp_prog); 1560d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(0), 0); 1561d9ae7f2bSJakub Kicinski 1562d9ae7f2bSJakub Kicinski /* Target for normal exits */ 1563d9ae7f2bSJakub Kicinski nfp_prog->tgt_out = nfp_prog_current_offset(nfp_prog); 1564d9ae7f2bSJakub Kicinski /* Legacy TC mode: 1565d9ae7f2bSJakub Kicinski * 0 0x11 -> pass, count as stat0 1566d9ae7f2bSJakub Kicinski * -1 drop 0x22 -> drop, count as stat1 1567d9ae7f2bSJakub Kicinski * redir 0x24 -> redir, count as stat1 1568d9ae7f2bSJakub Kicinski * ife mark 0x21 -> pass, count as stat1 1569d9ae7f2bSJakub Kicinski * ife + tx 0x24 -> redir, count as stat1 1570d9ae7f2bSJakub Kicinski */ 1571d9ae7f2bSJakub Kicinski emit_br_byte_neq(nfp_prog, reg_b(0), 0xff, 0, nfp_prog->tgt_done, 2); 1572c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 1573d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_imm(0x11), SHF_SC_L_SHF, 16); 1574d9ae7f2bSJakub Kicinski 1575d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_UNC, nfp_prog->tgt_done, 1); 1576d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_imm(act2code[nfp_prog->act]), 1577d9ae7f2bSJakub Kicinski SHF_SC_L_SHF, 16); 1578d9ae7f2bSJakub Kicinski } 1579d9ae7f2bSJakub Kicinski 1580d9ae7f2bSJakub Kicinski static void nfp_outro_tc_da(struct nfp_prog *nfp_prog) 1581d9ae7f2bSJakub Kicinski { 1582d9ae7f2bSJakub Kicinski /* TC direct-action mode: 1583d9ae7f2bSJakub Kicinski * 0,1 ok NOT SUPPORTED[1] 1584d9ae7f2bSJakub Kicinski * 2 drop 0x22 -> drop, count as stat1 1585d9ae7f2bSJakub Kicinski * 4,5 nuke 0x02 -> drop 1586d9ae7f2bSJakub Kicinski * 7 redir 0x44 -> redir, count as stat2 1587d9ae7f2bSJakub Kicinski * * unspec 0x11 -> pass, count as stat0 1588d9ae7f2bSJakub Kicinski * 1589d9ae7f2bSJakub Kicinski * [1] We can't support OK and RECLASSIFY because we can't tell TC 1590d9ae7f2bSJakub Kicinski * the exact decision made. We are forced to support UNSPEC 1591d9ae7f2bSJakub Kicinski * to handle aborts so that's the only one we handle for passing 1592d9ae7f2bSJakub Kicinski * packets up the stack. 1593d9ae7f2bSJakub Kicinski */ 1594d9ae7f2bSJakub Kicinski /* Target for aborts */ 1595d9ae7f2bSJakub Kicinski nfp_prog->tgt_abort = nfp_prog_current_offset(nfp_prog); 1596d9ae7f2bSJakub Kicinski 1597d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 1598d9ae7f2bSJakub Kicinski 1599c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 1600d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_imm(0x11), SHF_SC_L_SHF, 16); 1601d9ae7f2bSJakub Kicinski 1602d9ae7f2bSJakub Kicinski /* Target for normal exits */ 1603d9ae7f2bSJakub Kicinski nfp_prog->tgt_out = nfp_prog_current_offset(nfp_prog); 1604d9ae7f2bSJakub Kicinski 1605d9ae7f2bSJakub Kicinski /* if R0 > 7 jump to abort */ 1606d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_imm(7), ALU_OP_SUB, reg_b(0)); 1607d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BLO, nfp_prog->tgt_abort, 0); 1608c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 1609d9ae7f2bSJakub Kicinski 1610d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_b(2), 0x41221211); 1611d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_b(3), 0x41001211); 1612d9ae7f2bSJakub Kicinski 1613d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_a(1), 1614d9ae7f2bSJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(0), SHF_SC_L_SHF, 2); 1615d9ae7f2bSJakub Kicinski 1616d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(1), ALU_OP_OR, reg_imm(0)); 1617d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_a(2), 1618d9ae7f2bSJakub Kicinski reg_imm(0xf), SHF_OP_AND, reg_b(2), SHF_SC_R_SHF, 0); 1619d9ae7f2bSJakub Kicinski 1620d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(1), ALU_OP_OR, reg_imm(0)); 1621d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_b(2), 1622d9ae7f2bSJakub Kicinski reg_imm(0xf), SHF_OP_AND, reg_b(3), SHF_SC_R_SHF, 0); 1623d9ae7f2bSJakub Kicinski 1624d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 1625d9ae7f2bSJakub Kicinski 1626d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_b(2), 1627d9ae7f2bSJakub Kicinski reg_a(2), SHF_OP_OR, reg_b(2), SHF_SC_L_SHF, 4); 1628d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_b(2), SHF_SC_L_SHF, 16); 1629d9ae7f2bSJakub Kicinski } 1630d9ae7f2bSJakub Kicinski 1631d9ae7f2bSJakub Kicinski static void nfp_outro_xdp(struct nfp_prog *nfp_prog) 1632d9ae7f2bSJakub Kicinski { 1633d9ae7f2bSJakub Kicinski /* XDP return codes: 1634d9ae7f2bSJakub Kicinski * 0 aborted 0x82 -> drop, count as stat3 1635d9ae7f2bSJakub Kicinski * 1 drop 0x22 -> drop, count as stat1 1636d9ae7f2bSJakub Kicinski * 2 pass 0x11 -> pass, count as stat0 1637d9ae7f2bSJakub Kicinski * 3 tx 0x44 -> redir, count as stat2 1638d9ae7f2bSJakub Kicinski * * unknown 0x82 -> drop, count as stat3 1639d9ae7f2bSJakub Kicinski */ 1640d9ae7f2bSJakub Kicinski /* Target for aborts */ 1641d9ae7f2bSJakub Kicinski nfp_prog->tgt_abort = nfp_prog_current_offset(nfp_prog); 1642d9ae7f2bSJakub Kicinski 1643d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 1644d9ae7f2bSJakub Kicinski 1645c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 1646d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_imm(0x82), SHF_SC_L_SHF, 16); 1647d9ae7f2bSJakub Kicinski 1648d9ae7f2bSJakub Kicinski /* Target for normal exits */ 1649d9ae7f2bSJakub Kicinski nfp_prog->tgt_out = nfp_prog_current_offset(nfp_prog); 1650d9ae7f2bSJakub Kicinski 1651d9ae7f2bSJakub Kicinski /* if R0 > 3 jump to abort */ 1652d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_imm(3), ALU_OP_SUB, reg_b(0)); 1653d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BLO, nfp_prog->tgt_abort, 0); 1654d9ae7f2bSJakub Kicinski 1655d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_b(2), 0x44112282); 1656d9ae7f2bSJakub Kicinski 1657d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_a(1), 1658d9ae7f2bSJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(0), SHF_SC_L_SHF, 3); 1659d9ae7f2bSJakub Kicinski 1660d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(1), ALU_OP_OR, reg_imm(0)); 1661d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_b(2), 1662d9ae7f2bSJakub Kicinski reg_imm(0xff), SHF_OP_AND, reg_b(2), SHF_SC_R_SHF, 0); 1663d9ae7f2bSJakub Kicinski 1664d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 1665d9ae7f2bSJakub Kicinski 1666c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 1667d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_b(2), SHF_SC_L_SHF, 16); 1668d9ae7f2bSJakub Kicinski } 1669d9ae7f2bSJakub Kicinski 1670d9ae7f2bSJakub Kicinski static void nfp_outro(struct nfp_prog *nfp_prog) 1671d9ae7f2bSJakub Kicinski { 1672d9ae7f2bSJakub Kicinski switch (nfp_prog->act) { 1673d9ae7f2bSJakub Kicinski case NN_ACT_DIRECT: 1674d9ae7f2bSJakub Kicinski nfp_outro_tc_da(nfp_prog); 1675d9ae7f2bSJakub Kicinski break; 1676d9ae7f2bSJakub Kicinski case NN_ACT_TC_DROP: 1677d9ae7f2bSJakub Kicinski case NN_ACT_TC_REDIR: 1678d9ae7f2bSJakub Kicinski nfp_outro_tc_legacy(nfp_prog); 1679d9ae7f2bSJakub Kicinski break; 1680d9ae7f2bSJakub Kicinski case NN_ACT_XDP: 1681d9ae7f2bSJakub Kicinski nfp_outro_xdp(nfp_prog); 1682d9ae7f2bSJakub Kicinski break; 1683d9ae7f2bSJakub Kicinski } 1684d9ae7f2bSJakub Kicinski } 1685d9ae7f2bSJakub Kicinski 1686d9ae7f2bSJakub Kicinski static int nfp_translate(struct nfp_prog *nfp_prog) 1687d9ae7f2bSJakub Kicinski { 1688d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta; 16891c03e03fSJakub Kicinski int i, err; 1690d9ae7f2bSJakub Kicinski 1691d9ae7f2bSJakub Kicinski nfp_intro(nfp_prog); 1692d9ae7f2bSJakub Kicinski if (nfp_prog->error) 1693d9ae7f2bSJakub Kicinski return nfp_prog->error; 1694d9ae7f2bSJakub Kicinski 1695d9ae7f2bSJakub Kicinski list_for_each_entry(meta, &nfp_prog->insns, l) { 1696d9ae7f2bSJakub Kicinski instr_cb_t cb = instr_cb[meta->insn.code]; 1697d9ae7f2bSJakub Kicinski 1698d9ae7f2bSJakub Kicinski meta->off = nfp_prog_current_offset(nfp_prog); 1699d9ae7f2bSJakub Kicinski 1700d9ae7f2bSJakub Kicinski if (meta->skip) { 1701d9ae7f2bSJakub Kicinski nfp_prog->n_translated++; 1702d9ae7f2bSJakub Kicinski continue; 1703d9ae7f2bSJakub Kicinski } 1704d9ae7f2bSJakub Kicinski 1705d9ae7f2bSJakub Kicinski if (nfp_meta_has_prev(nfp_prog, meta) && 1706d9ae7f2bSJakub Kicinski nfp_meta_prev(meta)->double_cb) 1707d9ae7f2bSJakub Kicinski cb = nfp_meta_prev(meta)->double_cb; 1708d9ae7f2bSJakub Kicinski if (!cb) 1709d9ae7f2bSJakub Kicinski return -ENOENT; 1710d9ae7f2bSJakub Kicinski err = cb(nfp_prog, meta); 1711d9ae7f2bSJakub Kicinski if (err) 1712d9ae7f2bSJakub Kicinski return err; 1713d9ae7f2bSJakub Kicinski 1714d9ae7f2bSJakub Kicinski nfp_prog->n_translated++; 1715d9ae7f2bSJakub Kicinski } 1716d9ae7f2bSJakub Kicinski 1717d9ae7f2bSJakub Kicinski nfp_outro(nfp_prog); 1718d9ae7f2bSJakub Kicinski if (nfp_prog->error) 1719d9ae7f2bSJakub Kicinski return nfp_prog->error; 1720d9ae7f2bSJakub Kicinski 17211c03e03fSJakub Kicinski for (i = 0; i < NFP_USTORE_PREFETCH_WINDOW; i++) 17221c03e03fSJakub Kicinski emit_nop(nfp_prog); 17231c03e03fSJakub Kicinski if (nfp_prog->error) 17241c03e03fSJakub Kicinski return nfp_prog->error; 17251c03e03fSJakub Kicinski 1726d9ae7f2bSJakub Kicinski return nfp_fixup_branches(nfp_prog); 1727d9ae7f2bSJakub Kicinski } 1728d9ae7f2bSJakub Kicinski 1729d9ae7f2bSJakub Kicinski static int 1730d9ae7f2bSJakub Kicinski nfp_prog_prepare(struct nfp_prog *nfp_prog, const struct bpf_insn *prog, 1731d9ae7f2bSJakub Kicinski unsigned int cnt) 1732d9ae7f2bSJakub Kicinski { 1733d9ae7f2bSJakub Kicinski unsigned int i; 1734d9ae7f2bSJakub Kicinski 1735d9ae7f2bSJakub Kicinski for (i = 0; i < cnt; i++) { 1736d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta; 1737d9ae7f2bSJakub Kicinski 1738d9ae7f2bSJakub Kicinski meta = kzalloc(sizeof(*meta), GFP_KERNEL); 1739d9ae7f2bSJakub Kicinski if (!meta) 1740d9ae7f2bSJakub Kicinski return -ENOMEM; 1741d9ae7f2bSJakub Kicinski 1742d9ae7f2bSJakub Kicinski meta->insn = prog[i]; 1743d9ae7f2bSJakub Kicinski meta->n = i; 1744d9ae7f2bSJakub Kicinski 1745d9ae7f2bSJakub Kicinski list_add_tail(&meta->l, &nfp_prog->insns); 1746d9ae7f2bSJakub Kicinski } 1747d9ae7f2bSJakub Kicinski 1748d9ae7f2bSJakub Kicinski return 0; 1749d9ae7f2bSJakub Kicinski } 1750d9ae7f2bSJakub Kicinski 1751d9ae7f2bSJakub Kicinski /* --- Optimizations --- */ 1752d9ae7f2bSJakub Kicinski static void nfp_bpf_opt_reg_init(struct nfp_prog *nfp_prog) 1753d9ae7f2bSJakub Kicinski { 1754d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta; 1755d9ae7f2bSJakub Kicinski 1756d9ae7f2bSJakub Kicinski list_for_each_entry(meta, &nfp_prog->insns, l) { 1757d9ae7f2bSJakub Kicinski struct bpf_insn insn = meta->insn; 1758d9ae7f2bSJakub Kicinski 1759d9ae7f2bSJakub Kicinski /* Programs converted from cBPF start with register xoring */ 1760d9ae7f2bSJakub Kicinski if (insn.code == (BPF_ALU64 | BPF_XOR | BPF_X) && 1761d9ae7f2bSJakub Kicinski insn.src_reg == insn.dst_reg) 1762d9ae7f2bSJakub Kicinski continue; 1763d9ae7f2bSJakub Kicinski 1764d9ae7f2bSJakub Kicinski /* Programs start with R6 = R1 but we ignore the skb pointer */ 1765d9ae7f2bSJakub Kicinski if (insn.code == (BPF_ALU64 | BPF_MOV | BPF_X) && 1766d9ae7f2bSJakub Kicinski insn.src_reg == 1 && insn.dst_reg == 6) 1767d9ae7f2bSJakub Kicinski meta->skip = true; 1768d9ae7f2bSJakub Kicinski 1769d9ae7f2bSJakub Kicinski /* Return as soon as something doesn't match */ 1770d9ae7f2bSJakub Kicinski if (!meta->skip) 1771d9ae7f2bSJakub Kicinski return; 1772d9ae7f2bSJakub Kicinski } 1773d9ae7f2bSJakub Kicinski } 1774d9ae7f2bSJakub Kicinski 1775d9ae7f2bSJakub Kicinski /* Remove masking after load since our load guarantees this is not needed */ 1776d9ae7f2bSJakub Kicinski static void nfp_bpf_opt_ld_mask(struct nfp_prog *nfp_prog) 1777d9ae7f2bSJakub Kicinski { 1778d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta1, *meta2; 1779d9ae7f2bSJakub Kicinski const s32 exp_mask[] = { 1780d9ae7f2bSJakub Kicinski [BPF_B] = 0x000000ffU, 1781d9ae7f2bSJakub Kicinski [BPF_H] = 0x0000ffffU, 1782d9ae7f2bSJakub Kicinski [BPF_W] = 0xffffffffU, 1783d9ae7f2bSJakub Kicinski }; 1784d9ae7f2bSJakub Kicinski 1785d9ae7f2bSJakub Kicinski nfp_for_each_insn_walk2(nfp_prog, meta1, meta2) { 1786d9ae7f2bSJakub Kicinski struct bpf_insn insn, next; 1787d9ae7f2bSJakub Kicinski 1788d9ae7f2bSJakub Kicinski insn = meta1->insn; 1789d9ae7f2bSJakub Kicinski next = meta2->insn; 1790d9ae7f2bSJakub Kicinski 1791d9ae7f2bSJakub Kicinski if (BPF_CLASS(insn.code) != BPF_LD) 1792d9ae7f2bSJakub Kicinski continue; 1793d9ae7f2bSJakub Kicinski if (BPF_MODE(insn.code) != BPF_ABS && 1794d9ae7f2bSJakub Kicinski BPF_MODE(insn.code) != BPF_IND) 1795d9ae7f2bSJakub Kicinski continue; 1796d9ae7f2bSJakub Kicinski 1797d9ae7f2bSJakub Kicinski if (next.code != (BPF_ALU64 | BPF_AND | BPF_K)) 1798d9ae7f2bSJakub Kicinski continue; 1799d9ae7f2bSJakub Kicinski 1800d9ae7f2bSJakub Kicinski if (!exp_mask[BPF_SIZE(insn.code)]) 1801d9ae7f2bSJakub Kicinski continue; 1802d9ae7f2bSJakub Kicinski if (exp_mask[BPF_SIZE(insn.code)] != next.imm) 1803d9ae7f2bSJakub Kicinski continue; 1804d9ae7f2bSJakub Kicinski 1805d9ae7f2bSJakub Kicinski if (next.src_reg || next.dst_reg) 1806d9ae7f2bSJakub Kicinski continue; 1807d9ae7f2bSJakub Kicinski 1808d9ae7f2bSJakub Kicinski meta2->skip = true; 1809d9ae7f2bSJakub Kicinski } 1810d9ae7f2bSJakub Kicinski } 1811d9ae7f2bSJakub Kicinski 1812d9ae7f2bSJakub Kicinski static void nfp_bpf_opt_ld_shift(struct nfp_prog *nfp_prog) 1813d9ae7f2bSJakub Kicinski { 1814d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta1, *meta2, *meta3; 1815d9ae7f2bSJakub Kicinski 1816d9ae7f2bSJakub Kicinski nfp_for_each_insn_walk3(nfp_prog, meta1, meta2, meta3) { 1817d9ae7f2bSJakub Kicinski struct bpf_insn insn, next1, next2; 1818d9ae7f2bSJakub Kicinski 1819d9ae7f2bSJakub Kicinski insn = meta1->insn; 1820d9ae7f2bSJakub Kicinski next1 = meta2->insn; 1821d9ae7f2bSJakub Kicinski next2 = meta3->insn; 1822d9ae7f2bSJakub Kicinski 1823d9ae7f2bSJakub Kicinski if (BPF_CLASS(insn.code) != BPF_LD) 1824d9ae7f2bSJakub Kicinski continue; 1825d9ae7f2bSJakub Kicinski if (BPF_MODE(insn.code) != BPF_ABS && 1826d9ae7f2bSJakub Kicinski BPF_MODE(insn.code) != BPF_IND) 1827d9ae7f2bSJakub Kicinski continue; 1828d9ae7f2bSJakub Kicinski if (BPF_SIZE(insn.code) != BPF_W) 1829d9ae7f2bSJakub Kicinski continue; 1830d9ae7f2bSJakub Kicinski 1831d9ae7f2bSJakub Kicinski if (!(next1.code == (BPF_LSH | BPF_K | BPF_ALU64) && 1832d9ae7f2bSJakub Kicinski next2.code == (BPF_RSH | BPF_K | BPF_ALU64)) && 1833d9ae7f2bSJakub Kicinski !(next1.code == (BPF_RSH | BPF_K | BPF_ALU64) && 1834d9ae7f2bSJakub Kicinski next2.code == (BPF_LSH | BPF_K | BPF_ALU64))) 1835d9ae7f2bSJakub Kicinski continue; 1836d9ae7f2bSJakub Kicinski 1837d9ae7f2bSJakub Kicinski if (next1.src_reg || next1.dst_reg || 1838d9ae7f2bSJakub Kicinski next2.src_reg || next2.dst_reg) 1839d9ae7f2bSJakub Kicinski continue; 1840d9ae7f2bSJakub Kicinski 1841d9ae7f2bSJakub Kicinski if (next1.imm != 0x20 || next2.imm != 0x20) 1842d9ae7f2bSJakub Kicinski continue; 1843d9ae7f2bSJakub Kicinski 1844d9ae7f2bSJakub Kicinski meta2->skip = true; 1845d9ae7f2bSJakub Kicinski meta3->skip = true; 1846d9ae7f2bSJakub Kicinski } 1847d9ae7f2bSJakub Kicinski } 1848d9ae7f2bSJakub Kicinski 1849d9ae7f2bSJakub Kicinski static int nfp_bpf_optimize(struct nfp_prog *nfp_prog) 1850d9ae7f2bSJakub Kicinski { 1851d9ae7f2bSJakub Kicinski nfp_bpf_opt_reg_init(nfp_prog); 1852d9ae7f2bSJakub Kicinski 1853d9ae7f2bSJakub Kicinski nfp_bpf_opt_ld_mask(nfp_prog); 1854d9ae7f2bSJakub Kicinski nfp_bpf_opt_ld_shift(nfp_prog); 1855d9ae7f2bSJakub Kicinski 1856d9ae7f2bSJakub Kicinski return 0; 1857d9ae7f2bSJakub Kicinski } 1858d9ae7f2bSJakub Kicinski 18592e85d388SJakub Kicinski static int nfp_bpf_ustore_calc(struct nfp_prog *nfp_prog, __le64 *ustore) 1860fd068ddcSJakub Kicinski { 1861fd068ddcSJakub Kicinski int i; 1862fd068ddcSJakub Kicinski 1863fd068ddcSJakub Kicinski for (i = 0; i < nfp_prog->prog_len; i++) { 1864fd068ddcSJakub Kicinski int err; 1865fd068ddcSJakub Kicinski 1866fd068ddcSJakub Kicinski err = nfp_ustore_check_valid_no_ecc(nfp_prog->prog[i]); 1867fd068ddcSJakub Kicinski if (err) 1868fd068ddcSJakub Kicinski return err; 1869fd068ddcSJakub Kicinski 1870fd068ddcSJakub Kicinski nfp_prog->prog[i] = nfp_ustore_calc_ecc_insn(nfp_prog->prog[i]); 18712e85d388SJakub Kicinski 18722e85d388SJakub Kicinski ustore[i] = cpu_to_le64(nfp_prog->prog[i]); 1873fd068ddcSJakub Kicinski } 1874fd068ddcSJakub Kicinski 1875fd068ddcSJakub Kicinski return 0; 1876fd068ddcSJakub Kicinski } 1877fd068ddcSJakub Kicinski 1878d9ae7f2bSJakub Kicinski /** 1879d9ae7f2bSJakub Kicinski * nfp_bpf_jit() - translate BPF code into NFP assembly 1880d9ae7f2bSJakub Kicinski * @filter: kernel BPF filter struct 1881d9ae7f2bSJakub Kicinski * @prog_mem: memory to store assembler instructions 1882d9ae7f2bSJakub Kicinski * @act: action attached to this eBPF program 1883d9ae7f2bSJakub Kicinski * @prog_start: offset of the first instruction when loaded 1884d9ae7f2bSJakub Kicinski * @prog_done: where to jump on exit 1885d9ae7f2bSJakub Kicinski * @prog_sz: size of @prog_mem in instructions 1886d9ae7f2bSJakub Kicinski * @res: achieved parameters of translation results 1887d9ae7f2bSJakub Kicinski */ 1888d9ae7f2bSJakub Kicinski int 1889d9ae7f2bSJakub Kicinski nfp_bpf_jit(struct bpf_prog *filter, void *prog_mem, 1890d9ae7f2bSJakub Kicinski enum nfp_bpf_action_type act, 1891d9ae7f2bSJakub Kicinski unsigned int prog_start, unsigned int prog_done, 1892d9ae7f2bSJakub Kicinski unsigned int prog_sz, struct nfp_bpf_result *res) 1893d9ae7f2bSJakub Kicinski { 1894d9ae7f2bSJakub Kicinski struct nfp_prog *nfp_prog; 1895d9ae7f2bSJakub Kicinski int ret; 1896d9ae7f2bSJakub Kicinski 1897d9ae7f2bSJakub Kicinski nfp_prog = kzalloc(sizeof(*nfp_prog), GFP_KERNEL); 1898d9ae7f2bSJakub Kicinski if (!nfp_prog) 1899d9ae7f2bSJakub Kicinski return -ENOMEM; 1900d9ae7f2bSJakub Kicinski 1901d9ae7f2bSJakub Kicinski INIT_LIST_HEAD(&nfp_prog->insns); 1902d9ae7f2bSJakub Kicinski nfp_prog->act = act; 1903d9ae7f2bSJakub Kicinski nfp_prog->start_off = prog_start; 1904d9ae7f2bSJakub Kicinski nfp_prog->tgt_done = prog_done; 1905d9ae7f2bSJakub Kicinski 1906d9ae7f2bSJakub Kicinski ret = nfp_prog_prepare(nfp_prog, filter->insnsi, filter->len); 1907d9ae7f2bSJakub Kicinski if (ret) 1908d9ae7f2bSJakub Kicinski goto out; 1909d9ae7f2bSJakub Kicinski 1910d9ae7f2bSJakub Kicinski ret = nfp_prog_verify(nfp_prog, filter); 1911d9ae7f2bSJakub Kicinski if (ret) 1912d9ae7f2bSJakub Kicinski goto out; 1913d9ae7f2bSJakub Kicinski 1914d9ae7f2bSJakub Kicinski ret = nfp_bpf_optimize(nfp_prog); 1915d9ae7f2bSJakub Kicinski if (ret) 1916d9ae7f2bSJakub Kicinski goto out; 1917d9ae7f2bSJakub Kicinski 1918226e0e94SJakub Kicinski nfp_prog->num_regs = MAX_BPF_REG; 1919d9ae7f2bSJakub Kicinski nfp_prog->regs_per_thread = 32; 1920d9ae7f2bSJakub Kicinski 1921d9ae7f2bSJakub Kicinski nfp_prog->prog = prog_mem; 1922d9ae7f2bSJakub Kicinski nfp_prog->__prog_alloc_len = prog_sz; 1923d9ae7f2bSJakub Kicinski 1924d9ae7f2bSJakub Kicinski ret = nfp_translate(nfp_prog); 1925d9ae7f2bSJakub Kicinski if (ret) { 1926d9ae7f2bSJakub Kicinski pr_err("Translation failed with error %d (translated: %u)\n", 1927d9ae7f2bSJakub Kicinski ret, nfp_prog->n_translated); 1928d9ae7f2bSJakub Kicinski ret = -EINVAL; 1929fd068ddcSJakub Kicinski goto out; 1930d9ae7f2bSJakub Kicinski } 1931d9ae7f2bSJakub Kicinski 19322e85d388SJakub Kicinski ret = nfp_bpf_ustore_calc(nfp_prog, (__force __le64 *)prog_mem); 1933fd068ddcSJakub Kicinski 1934d9ae7f2bSJakub Kicinski res->n_instr = nfp_prog->prog_len; 1935226e0e94SJakub Kicinski res->dense_mode = false; 1936d9ae7f2bSJakub Kicinski out: 1937d9ae7f2bSJakub Kicinski nfp_prog_free(nfp_prog); 1938d9ae7f2bSJakub Kicinski 1939d9ae7f2bSJakub Kicinski return ret; 1940d9ae7f2bSJakub Kicinski } 1941