1d9ae7f2bSJakub Kicinski /* 2854dc87dSJiong Wang * Copyright (C) 2016-2017 Netronome Systems, Inc. 3d9ae7f2bSJakub Kicinski * 4d9ae7f2bSJakub Kicinski * This software is dual licensed under the GNU General License Version 2, 5d9ae7f2bSJakub Kicinski * June 1991 as shown in the file COPYING in the top-level directory of this 6d9ae7f2bSJakub Kicinski * source tree or the BSD 2-Clause License provided below. You have the 7d9ae7f2bSJakub Kicinski * option to license this software under the complete terms of either license. 8d9ae7f2bSJakub Kicinski * 9d9ae7f2bSJakub Kicinski * The BSD 2-Clause License: 10d9ae7f2bSJakub Kicinski * 11d9ae7f2bSJakub Kicinski * Redistribution and use in source and binary forms, with or 12d9ae7f2bSJakub Kicinski * without modification, are permitted provided that the following 13d9ae7f2bSJakub Kicinski * conditions are met: 14d9ae7f2bSJakub Kicinski * 15d9ae7f2bSJakub Kicinski * 1. Redistributions of source code must retain the above 16d9ae7f2bSJakub Kicinski * copyright notice, this list of conditions and the following 17d9ae7f2bSJakub Kicinski * disclaimer. 18d9ae7f2bSJakub Kicinski * 19d9ae7f2bSJakub Kicinski * 2. Redistributions in binary form must reproduce the above 20d9ae7f2bSJakub Kicinski * copyright notice, this list of conditions and the following 21d9ae7f2bSJakub Kicinski * disclaimer in the documentation and/or other materials 22d9ae7f2bSJakub Kicinski * provided with the distribution. 23d9ae7f2bSJakub Kicinski * 24d9ae7f2bSJakub Kicinski * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 25d9ae7f2bSJakub Kicinski * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 26d9ae7f2bSJakub Kicinski * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 27d9ae7f2bSJakub Kicinski * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 28d9ae7f2bSJakub Kicinski * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 29d9ae7f2bSJakub Kicinski * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 30d9ae7f2bSJakub Kicinski * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 31d9ae7f2bSJakub Kicinski * SOFTWARE. 32d9ae7f2bSJakub Kicinski */ 33d9ae7f2bSJakub Kicinski 34d9ae7f2bSJakub Kicinski #define pr_fmt(fmt) "NFP net bpf: " fmt 35d9ae7f2bSJakub Kicinski 36d9ae7f2bSJakub Kicinski #include <linux/kernel.h> 37d9ae7f2bSJakub Kicinski #include <linux/bpf.h> 38d9ae7f2bSJakub Kicinski #include <linux/filter.h> 39d9ae7f2bSJakub Kicinski #include <linux/pkt_cls.h> 40d9ae7f2bSJakub Kicinski #include <linux/unistd.h> 41d9ae7f2bSJakub Kicinski 42d9ae7f2bSJakub Kicinski #include "main.h" 43d9ae7f2bSJakub Kicinski #include "../nfp_asm.h" 44d9ae7f2bSJakub Kicinski 45d9ae7f2bSJakub Kicinski /* --- NFP prog --- */ 46d9ae7f2bSJakub Kicinski /* Foreach "multiple" entries macros provide pos and next<n> pointers. 47d9ae7f2bSJakub Kicinski * It's safe to modify the next pointers (but not pos). 48d9ae7f2bSJakub Kicinski */ 49d9ae7f2bSJakub Kicinski #define nfp_for_each_insn_walk2(nfp_prog, pos, next) \ 50d9ae7f2bSJakub Kicinski for (pos = list_first_entry(&(nfp_prog)->insns, typeof(*pos), l), \ 51d9ae7f2bSJakub Kicinski next = list_next_entry(pos, l); \ 52d9ae7f2bSJakub Kicinski &(nfp_prog)->insns != &pos->l && \ 53d9ae7f2bSJakub Kicinski &(nfp_prog)->insns != &next->l; \ 54d9ae7f2bSJakub Kicinski pos = nfp_meta_next(pos), \ 55d9ae7f2bSJakub Kicinski next = nfp_meta_next(pos)) 56d9ae7f2bSJakub Kicinski 57d9ae7f2bSJakub Kicinski #define nfp_for_each_insn_walk3(nfp_prog, pos, next, next2) \ 58d9ae7f2bSJakub Kicinski for (pos = list_first_entry(&(nfp_prog)->insns, typeof(*pos), l), \ 59d9ae7f2bSJakub Kicinski next = list_next_entry(pos, l), \ 60d9ae7f2bSJakub Kicinski next2 = list_next_entry(next, l); \ 61d9ae7f2bSJakub Kicinski &(nfp_prog)->insns != &pos->l && \ 62d9ae7f2bSJakub Kicinski &(nfp_prog)->insns != &next->l && \ 63d9ae7f2bSJakub Kicinski &(nfp_prog)->insns != &next2->l; \ 64d9ae7f2bSJakub Kicinski pos = nfp_meta_next(pos), \ 65d9ae7f2bSJakub Kicinski next = nfp_meta_next(pos), \ 66d9ae7f2bSJakub Kicinski next2 = nfp_meta_next(next)) 67d9ae7f2bSJakub Kicinski 68d9ae7f2bSJakub Kicinski static bool 69d9ae7f2bSJakub Kicinski nfp_meta_has_prev(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 70d9ae7f2bSJakub Kicinski { 71d9ae7f2bSJakub Kicinski return meta->l.prev != &nfp_prog->insns; 72d9ae7f2bSJakub Kicinski } 73d9ae7f2bSJakub Kicinski 74d9ae7f2bSJakub Kicinski static void nfp_prog_push(struct nfp_prog *nfp_prog, u64 insn) 75d9ae7f2bSJakub Kicinski { 76d9ae7f2bSJakub Kicinski if (nfp_prog->__prog_alloc_len == nfp_prog->prog_len) { 77d9ae7f2bSJakub Kicinski nfp_prog->error = -ENOSPC; 78d9ae7f2bSJakub Kicinski return; 79d9ae7f2bSJakub Kicinski } 80d9ae7f2bSJakub Kicinski 81d9ae7f2bSJakub Kicinski nfp_prog->prog[nfp_prog->prog_len] = insn; 82d9ae7f2bSJakub Kicinski nfp_prog->prog_len++; 83d9ae7f2bSJakub Kicinski } 84d9ae7f2bSJakub Kicinski 85d9ae7f2bSJakub Kicinski static unsigned int nfp_prog_current_offset(struct nfp_prog *nfp_prog) 86d9ae7f2bSJakub Kicinski { 87d9ae7f2bSJakub Kicinski return nfp_prog->start_off + nfp_prog->prog_len; 88d9ae7f2bSJakub Kicinski } 89d9ae7f2bSJakub Kicinski 90d9ae7f2bSJakub Kicinski static unsigned int 91d9ae7f2bSJakub Kicinski nfp_prog_offset_to_index(struct nfp_prog *nfp_prog, unsigned int offset) 92d9ae7f2bSJakub Kicinski { 93d9ae7f2bSJakub Kicinski return offset - nfp_prog->start_off; 94d9ae7f2bSJakub Kicinski } 95d9ae7f2bSJakub Kicinski 96d9ae7f2bSJakub Kicinski /* --- Emitters --- */ 97d9ae7f2bSJakub Kicinski static void 98d9ae7f2bSJakub Kicinski __emit_cmd(struct nfp_prog *nfp_prog, enum cmd_tgt_map op, 99d9ae7f2bSJakub Kicinski u8 mode, u8 xfer, u8 areg, u8 breg, u8 size, bool sync) 100d9ae7f2bSJakub Kicinski { 101d9ae7f2bSJakub Kicinski enum cmd_ctx_swap ctx; 102d9ae7f2bSJakub Kicinski u64 insn; 103d9ae7f2bSJakub Kicinski 104d9ae7f2bSJakub Kicinski if (sync) 105d9ae7f2bSJakub Kicinski ctx = CMD_CTX_SWAP; 106d9ae7f2bSJakub Kicinski else 107d9ae7f2bSJakub Kicinski ctx = CMD_CTX_NO_SWAP; 108d9ae7f2bSJakub Kicinski 109d9ae7f2bSJakub Kicinski insn = FIELD_PREP(OP_CMD_A_SRC, areg) | 110d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_CTX, ctx) | 111d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_B_SRC, breg) | 112d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_TOKEN, cmd_tgt_act[op].token) | 113d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_XFER, xfer) | 114d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_CNT, size) | 115d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_SIG, sync) | 116d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_TGT_CMD, cmd_tgt_act[op].tgt_cmd) | 117d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_MODE, mode); 118d9ae7f2bSJakub Kicinski 119d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 120d9ae7f2bSJakub Kicinski } 121d9ae7f2bSJakub Kicinski 122d9ae7f2bSJakub Kicinski static void 123d9ae7f2bSJakub Kicinski emit_cmd(struct nfp_prog *nfp_prog, enum cmd_tgt_map op, 124b3f868dfSJakub Kicinski u8 mode, u8 xfer, swreg lreg, swreg rreg, u8 size, bool sync) 125d9ae7f2bSJakub Kicinski { 126d9ae7f2bSJakub Kicinski struct nfp_insn_re_regs reg; 127d9ae7f2bSJakub Kicinski int err; 128d9ae7f2bSJakub Kicinski 129d9ae7f2bSJakub Kicinski err = swreg_to_restricted(reg_none(), lreg, rreg, ®, false); 130d9ae7f2bSJakub Kicinski if (err) { 131d9ae7f2bSJakub Kicinski nfp_prog->error = err; 132d9ae7f2bSJakub Kicinski return; 133d9ae7f2bSJakub Kicinski } 134d9ae7f2bSJakub Kicinski if (reg.swap) { 135d9ae7f2bSJakub Kicinski pr_err("cmd can't swap arguments\n"); 136d9ae7f2bSJakub Kicinski nfp_prog->error = -EFAULT; 137d9ae7f2bSJakub Kicinski return; 138d9ae7f2bSJakub Kicinski } 139995e101fSJakub Kicinski if (reg.dst_lmextn || reg.src_lmextn) { 140995e101fSJakub Kicinski pr_err("cmd can't use LMextn\n"); 141995e101fSJakub Kicinski nfp_prog->error = -EFAULT; 142995e101fSJakub Kicinski return; 143995e101fSJakub Kicinski } 144d9ae7f2bSJakub Kicinski 145d9ae7f2bSJakub Kicinski __emit_cmd(nfp_prog, op, mode, xfer, reg.areg, reg.breg, size, sync); 146d9ae7f2bSJakub Kicinski } 147d9ae7f2bSJakub Kicinski 148d9ae7f2bSJakub Kicinski static void 149d9ae7f2bSJakub Kicinski __emit_br(struct nfp_prog *nfp_prog, enum br_mask mask, enum br_ev_pip ev_pip, 150d9ae7f2bSJakub Kicinski enum br_ctx_signal_state css, u16 addr, u8 defer) 151d9ae7f2bSJakub Kicinski { 152d9ae7f2bSJakub Kicinski u16 addr_lo, addr_hi; 153d9ae7f2bSJakub Kicinski u64 insn; 154d9ae7f2bSJakub Kicinski 155d9ae7f2bSJakub Kicinski addr_lo = addr & (OP_BR_ADDR_LO >> __bf_shf(OP_BR_ADDR_LO)); 156d9ae7f2bSJakub Kicinski addr_hi = addr != addr_lo; 157d9ae7f2bSJakub Kicinski 158d9ae7f2bSJakub Kicinski insn = OP_BR_BASE | 159d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_MASK, mask) | 160d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_EV_PIP, ev_pip) | 161d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_CSS, css) | 162d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_DEFBR, defer) | 163d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_ADDR_LO, addr_lo) | 164d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_ADDR_HI, addr_hi); 165d9ae7f2bSJakub Kicinski 166d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 167d9ae7f2bSJakub Kicinski } 168d9ae7f2bSJakub Kicinski 169d9ae7f2bSJakub Kicinski static void emit_br_def(struct nfp_prog *nfp_prog, u16 addr, u8 defer) 170d9ae7f2bSJakub Kicinski { 171d9ae7f2bSJakub Kicinski if (defer > 2) { 172d9ae7f2bSJakub Kicinski pr_err("BUG: branch defer out of bounds %d\n", defer); 173d9ae7f2bSJakub Kicinski nfp_prog->error = -EFAULT; 174d9ae7f2bSJakub Kicinski return; 175d9ae7f2bSJakub Kicinski } 176d9ae7f2bSJakub Kicinski __emit_br(nfp_prog, BR_UNC, BR_EV_PIP_UNCOND, BR_CSS_NONE, addr, defer); 177d9ae7f2bSJakub Kicinski } 178d9ae7f2bSJakub Kicinski 179d9ae7f2bSJakub Kicinski static void 180d9ae7f2bSJakub Kicinski emit_br(struct nfp_prog *nfp_prog, enum br_mask mask, u16 addr, u8 defer) 181d9ae7f2bSJakub Kicinski { 182d9ae7f2bSJakub Kicinski __emit_br(nfp_prog, mask, 183d9ae7f2bSJakub Kicinski mask != BR_UNC ? BR_EV_PIP_COND : BR_EV_PIP_UNCOND, 184d9ae7f2bSJakub Kicinski BR_CSS_NONE, addr, defer); 185d9ae7f2bSJakub Kicinski } 186d9ae7f2bSJakub Kicinski 187d9ae7f2bSJakub Kicinski static void 188d9ae7f2bSJakub Kicinski __emit_immed(struct nfp_prog *nfp_prog, u16 areg, u16 breg, u16 imm_hi, 189d9ae7f2bSJakub Kicinski enum immed_width width, bool invert, 190995e101fSJakub Kicinski enum immed_shift shift, bool wr_both, 191995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 192d9ae7f2bSJakub Kicinski { 193d9ae7f2bSJakub Kicinski u64 insn; 194d9ae7f2bSJakub Kicinski 195d9ae7f2bSJakub Kicinski insn = OP_IMMED_BASE | 196d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_A_SRC, areg) | 197d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_B_SRC, breg) | 198d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_IMM, imm_hi) | 199d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_WIDTH, width) | 200d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_INV, invert) | 201d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_SHIFT, shift) | 202995e101fSJakub Kicinski FIELD_PREP(OP_IMMED_WR_AB, wr_both) | 203995e101fSJakub Kicinski FIELD_PREP(OP_IMMED_SRC_LMEXTN, src_lmextn) | 204995e101fSJakub Kicinski FIELD_PREP(OP_IMMED_DST_LMEXTN, dst_lmextn); 205d9ae7f2bSJakub Kicinski 206d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 207d9ae7f2bSJakub Kicinski } 208d9ae7f2bSJakub Kicinski 209d9ae7f2bSJakub Kicinski static void 210b3f868dfSJakub Kicinski emit_immed(struct nfp_prog *nfp_prog, swreg dst, u16 imm, 211d9ae7f2bSJakub Kicinski enum immed_width width, bool invert, enum immed_shift shift) 212d9ae7f2bSJakub Kicinski { 213d9ae7f2bSJakub Kicinski struct nfp_insn_ur_regs reg; 214d9ae7f2bSJakub Kicinski int err; 215d9ae7f2bSJakub Kicinski 216b3f868dfSJakub Kicinski if (swreg_type(dst) == NN_REG_IMM) { 217d9ae7f2bSJakub Kicinski nfp_prog->error = -EFAULT; 218d9ae7f2bSJakub Kicinski return; 219d9ae7f2bSJakub Kicinski } 220d9ae7f2bSJakub Kicinski 221d9ae7f2bSJakub Kicinski err = swreg_to_unrestricted(dst, dst, reg_imm(imm & 0xff), ®); 222d9ae7f2bSJakub Kicinski if (err) { 223d9ae7f2bSJakub Kicinski nfp_prog->error = err; 224d9ae7f2bSJakub Kicinski return; 225d9ae7f2bSJakub Kicinski } 226d9ae7f2bSJakub Kicinski 2273239e7bbSJiong Wang /* Use reg.dst when destination is No-Dest. */ 2283239e7bbSJiong Wang __emit_immed(nfp_prog, 2293239e7bbSJiong Wang swreg_type(dst) == NN_REG_NONE ? reg.dst : reg.areg, 2303239e7bbSJiong Wang reg.breg, imm >> 8, width, invert, shift, 2313239e7bbSJiong Wang reg.wr_both, reg.dst_lmextn, reg.src_lmextn); 232d9ae7f2bSJakub Kicinski } 233d9ae7f2bSJakub Kicinski 234d9ae7f2bSJakub Kicinski static void 235d9ae7f2bSJakub Kicinski __emit_shf(struct nfp_prog *nfp_prog, u16 dst, enum alu_dst_ab dst_ab, 236d9ae7f2bSJakub Kicinski enum shf_sc sc, u8 shift, 237995e101fSJakub Kicinski u16 areg, enum shf_op op, u16 breg, bool i8, bool sw, bool wr_both, 238995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 239d9ae7f2bSJakub Kicinski { 240d9ae7f2bSJakub Kicinski u64 insn; 241d9ae7f2bSJakub Kicinski 242d9ae7f2bSJakub Kicinski if (!FIELD_FIT(OP_SHF_SHIFT, shift)) { 243d9ae7f2bSJakub Kicinski nfp_prog->error = -EFAULT; 244d9ae7f2bSJakub Kicinski return; 245d9ae7f2bSJakub Kicinski } 246d9ae7f2bSJakub Kicinski 247d9ae7f2bSJakub Kicinski if (sc == SHF_SC_L_SHF) 248d9ae7f2bSJakub Kicinski shift = 32 - shift; 249d9ae7f2bSJakub Kicinski 250d9ae7f2bSJakub Kicinski insn = OP_SHF_BASE | 251d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_A_SRC, areg) | 252d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_SC, sc) | 253d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_B_SRC, breg) | 254d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_I8, i8) | 255d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_SW, sw) | 256d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_DST, dst) | 257d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_SHIFT, shift) | 258d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_OP, op) | 259d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_DST_AB, dst_ab) | 260995e101fSJakub Kicinski FIELD_PREP(OP_SHF_WR_AB, wr_both) | 261995e101fSJakub Kicinski FIELD_PREP(OP_SHF_SRC_LMEXTN, src_lmextn) | 262995e101fSJakub Kicinski FIELD_PREP(OP_SHF_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_shf(struct nfp_prog *nfp_prog, swreg dst, 269b3f868dfSJakub Kicinski swreg lreg, enum shf_op op, swreg rreg, enum shf_sc sc, u8 shift) 270d9ae7f2bSJakub Kicinski { 271d9ae7f2bSJakub Kicinski struct nfp_insn_re_regs reg; 272d9ae7f2bSJakub Kicinski int err; 273d9ae7f2bSJakub Kicinski 274d9ae7f2bSJakub Kicinski err = swreg_to_restricted(dst, lreg, rreg, ®, true); 275d9ae7f2bSJakub Kicinski if (err) { 276d9ae7f2bSJakub Kicinski nfp_prog->error = err; 277d9ae7f2bSJakub Kicinski return; 278d9ae7f2bSJakub Kicinski } 279d9ae7f2bSJakub Kicinski 280d9ae7f2bSJakub Kicinski __emit_shf(nfp_prog, reg.dst, reg.dst_ab, sc, shift, 281995e101fSJakub Kicinski reg.areg, op, reg.breg, reg.i8, reg.swap, reg.wr_both, 282995e101fSJakub Kicinski reg.dst_lmextn, reg.src_lmextn); 283d9ae7f2bSJakub Kicinski } 284d9ae7f2bSJakub Kicinski 285d9ae7f2bSJakub Kicinski static void 286d9ae7f2bSJakub Kicinski __emit_alu(struct nfp_prog *nfp_prog, u16 dst, enum alu_dst_ab dst_ab, 287995e101fSJakub Kicinski u16 areg, enum alu_op op, u16 breg, bool swap, bool wr_both, 288995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 289d9ae7f2bSJakub Kicinski { 290d9ae7f2bSJakub Kicinski u64 insn; 291d9ae7f2bSJakub Kicinski 292d9ae7f2bSJakub Kicinski insn = OP_ALU_BASE | 293d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_A_SRC, areg) | 294d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_B_SRC, breg) | 295d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_DST, dst) | 296d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_SW, swap) | 297d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_OP, op) | 298d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_DST_AB, dst_ab) | 299995e101fSJakub Kicinski FIELD_PREP(OP_ALU_WR_AB, wr_both) | 300995e101fSJakub Kicinski FIELD_PREP(OP_ALU_SRC_LMEXTN, src_lmextn) | 301995e101fSJakub Kicinski FIELD_PREP(OP_ALU_DST_LMEXTN, dst_lmextn); 302d9ae7f2bSJakub Kicinski 303d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 304d9ae7f2bSJakub Kicinski } 305d9ae7f2bSJakub Kicinski 306d9ae7f2bSJakub Kicinski static void 307b3f868dfSJakub Kicinski emit_alu(struct nfp_prog *nfp_prog, swreg dst, 308b3f868dfSJakub Kicinski swreg lreg, enum alu_op op, swreg rreg) 309d9ae7f2bSJakub Kicinski { 310d9ae7f2bSJakub Kicinski struct nfp_insn_ur_regs reg; 311d9ae7f2bSJakub Kicinski int err; 312d9ae7f2bSJakub Kicinski 313d9ae7f2bSJakub Kicinski err = swreg_to_unrestricted(dst, lreg, rreg, ®); 314d9ae7f2bSJakub Kicinski if (err) { 315d9ae7f2bSJakub Kicinski nfp_prog->error = err; 316d9ae7f2bSJakub Kicinski return; 317d9ae7f2bSJakub Kicinski } 318d9ae7f2bSJakub Kicinski 319d9ae7f2bSJakub Kicinski __emit_alu(nfp_prog, reg.dst, reg.dst_ab, 320995e101fSJakub Kicinski reg.areg, op, reg.breg, reg.swap, reg.wr_both, 321995e101fSJakub Kicinski reg.dst_lmextn, reg.src_lmextn); 322d9ae7f2bSJakub Kicinski } 323d9ae7f2bSJakub Kicinski 324d9ae7f2bSJakub Kicinski static void 325d9ae7f2bSJakub Kicinski __emit_ld_field(struct nfp_prog *nfp_prog, enum shf_sc sc, 326d9ae7f2bSJakub Kicinski u8 areg, u8 bmask, u8 breg, u8 shift, bool imm8, 327995e101fSJakub Kicinski bool zero, bool swap, bool wr_both, 328995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 329d9ae7f2bSJakub Kicinski { 330d9ae7f2bSJakub Kicinski u64 insn; 331d9ae7f2bSJakub Kicinski 332d9ae7f2bSJakub Kicinski insn = OP_LDF_BASE | 333d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_A_SRC, areg) | 334d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_SC, sc) | 335d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_B_SRC, breg) | 336d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_I8, imm8) | 337d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_SW, swap) | 338d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_ZF, zero) | 339d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_BMASK, bmask) | 340d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_SHF, shift) | 341995e101fSJakub Kicinski FIELD_PREP(OP_LDF_WR_AB, wr_both) | 342995e101fSJakub Kicinski FIELD_PREP(OP_LDF_SRC_LMEXTN, src_lmextn) | 343995e101fSJakub Kicinski FIELD_PREP(OP_LDF_DST_LMEXTN, dst_lmextn); 344d9ae7f2bSJakub Kicinski 345d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 346d9ae7f2bSJakub Kicinski } 347d9ae7f2bSJakub Kicinski 348d9ae7f2bSJakub Kicinski static void 349bc8c80a8SJakub Kicinski emit_ld_field_any(struct nfp_prog *nfp_prog, swreg dst, u8 bmask, swreg src, 350bc8c80a8SJakub Kicinski enum shf_sc sc, u8 shift, bool zero) 351d9ae7f2bSJakub Kicinski { 352d9ae7f2bSJakub Kicinski struct nfp_insn_re_regs reg; 353d9ae7f2bSJakub Kicinski int err; 354d9ae7f2bSJakub Kicinski 3552de1be1dSJakub Kicinski /* Note: ld_field is special as it uses one of the src regs as dst */ 3562de1be1dSJakub Kicinski err = swreg_to_restricted(dst, dst, src, ®, true); 357d9ae7f2bSJakub Kicinski if (err) { 358d9ae7f2bSJakub Kicinski nfp_prog->error = err; 359d9ae7f2bSJakub Kicinski return; 360d9ae7f2bSJakub Kicinski } 361d9ae7f2bSJakub Kicinski 362d9ae7f2bSJakub Kicinski __emit_ld_field(nfp_prog, sc, reg.areg, bmask, reg.breg, shift, 363995e101fSJakub Kicinski reg.i8, zero, reg.swap, reg.wr_both, 364995e101fSJakub Kicinski reg.dst_lmextn, reg.src_lmextn); 365d9ae7f2bSJakub Kicinski } 366d9ae7f2bSJakub Kicinski 367d9ae7f2bSJakub Kicinski static void 368b3f868dfSJakub Kicinski emit_ld_field(struct nfp_prog *nfp_prog, swreg dst, u8 bmask, swreg src, 369d9ae7f2bSJakub Kicinski enum shf_sc sc, u8 shift) 370d9ae7f2bSJakub Kicinski { 371bc8c80a8SJakub Kicinski emit_ld_field_any(nfp_prog, dst, bmask, src, sc, shift, false); 372d9ae7f2bSJakub Kicinski } 373d9ae7f2bSJakub Kicinski 3742df03a50SJakub Kicinski static void 3752df03a50SJakub Kicinski __emit_lcsr(struct nfp_prog *nfp_prog, u16 areg, u16 breg, bool wr, u16 addr, 3762df03a50SJakub Kicinski bool dst_lmextn, bool src_lmextn) 3772df03a50SJakub Kicinski { 3782df03a50SJakub Kicinski u64 insn; 3792df03a50SJakub Kicinski 3802df03a50SJakub Kicinski insn = OP_LCSR_BASE | 3812df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_A_SRC, areg) | 3822df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_B_SRC, breg) | 3832df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_WRITE, wr) | 3842df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_ADDR, addr) | 3852df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_SRC_LMEXTN, src_lmextn) | 3862df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_DST_LMEXTN, dst_lmextn); 3872df03a50SJakub Kicinski 3882df03a50SJakub Kicinski nfp_prog_push(nfp_prog, insn); 3892df03a50SJakub Kicinski } 3902df03a50SJakub Kicinski 3912df03a50SJakub Kicinski static void emit_csr_wr(struct nfp_prog *nfp_prog, swreg src, u16 addr) 3922df03a50SJakub Kicinski { 3932df03a50SJakub Kicinski struct nfp_insn_ur_regs reg; 3942df03a50SJakub Kicinski int err; 3952df03a50SJakub Kicinski 3962df03a50SJakub Kicinski /* This instruction takes immeds instead of reg_none() for the ignored 3972df03a50SJakub Kicinski * operand, but we can't encode 2 immeds in one instr with our normal 3982df03a50SJakub Kicinski * swreg infra so if param is an immed, we encode as reg_none() and 3992df03a50SJakub Kicinski * copy the immed to both operands. 4002df03a50SJakub Kicinski */ 4012df03a50SJakub Kicinski if (swreg_type(src) == NN_REG_IMM) { 4022df03a50SJakub Kicinski err = swreg_to_unrestricted(reg_none(), src, reg_none(), ®); 4032df03a50SJakub Kicinski reg.breg = reg.areg; 4042df03a50SJakub Kicinski } else { 4052df03a50SJakub Kicinski err = swreg_to_unrestricted(reg_none(), src, reg_imm(0), ®); 4062df03a50SJakub Kicinski } 4072df03a50SJakub Kicinski if (err) { 4082df03a50SJakub Kicinski nfp_prog->error = err; 4092df03a50SJakub Kicinski return; 4102df03a50SJakub Kicinski } 4112df03a50SJakub Kicinski 4122df03a50SJakub Kicinski __emit_lcsr(nfp_prog, reg.areg, reg.breg, true, addr / 4, 4132df03a50SJakub Kicinski false, reg.src_lmextn); 4142df03a50SJakub Kicinski } 4152df03a50SJakub Kicinski 4161c03e03fSJakub Kicinski static void emit_nop(struct nfp_prog *nfp_prog) 4171c03e03fSJakub Kicinski { 4181c03e03fSJakub Kicinski __emit_immed(nfp_prog, UR_REG_IMM, UR_REG_IMM, 0, 0, 0, 0, 0, 0, 0); 4191c03e03fSJakub Kicinski } 4201c03e03fSJakub Kicinski 421d9ae7f2bSJakub Kicinski /* --- Wrappers --- */ 422d9ae7f2bSJakub Kicinski static bool pack_immed(u32 imm, u16 *val, enum immed_shift *shift) 423d9ae7f2bSJakub Kicinski { 424d9ae7f2bSJakub Kicinski if (!(imm & 0xffff0000)) { 425d9ae7f2bSJakub Kicinski *val = imm; 426d9ae7f2bSJakub Kicinski *shift = IMMED_SHIFT_0B; 427d9ae7f2bSJakub Kicinski } else if (!(imm & 0xff0000ff)) { 428d9ae7f2bSJakub Kicinski *val = imm >> 8; 429d9ae7f2bSJakub Kicinski *shift = IMMED_SHIFT_1B; 430d9ae7f2bSJakub Kicinski } else if (!(imm & 0x0000ffff)) { 431d9ae7f2bSJakub Kicinski *val = imm >> 16; 432d9ae7f2bSJakub Kicinski *shift = IMMED_SHIFT_2B; 433d9ae7f2bSJakub Kicinski } else { 434d9ae7f2bSJakub Kicinski return false; 435d9ae7f2bSJakub Kicinski } 436d9ae7f2bSJakub Kicinski 437d9ae7f2bSJakub Kicinski return true; 438d9ae7f2bSJakub Kicinski } 439d9ae7f2bSJakub Kicinski 440b3f868dfSJakub Kicinski static void wrp_immed(struct nfp_prog *nfp_prog, swreg dst, u32 imm) 441d9ae7f2bSJakub Kicinski { 442d9ae7f2bSJakub Kicinski enum immed_shift shift; 443d9ae7f2bSJakub Kicinski u16 val; 444d9ae7f2bSJakub Kicinski 445d9ae7f2bSJakub Kicinski if (pack_immed(imm, &val, &shift)) { 446d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, val, IMMED_WIDTH_ALL, false, shift); 447d9ae7f2bSJakub Kicinski } else if (pack_immed(~imm, &val, &shift)) { 448d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, val, IMMED_WIDTH_ALL, true, shift); 449d9ae7f2bSJakub Kicinski } else { 450d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, imm & 0xffff, IMMED_WIDTH_ALL, 451d9ae7f2bSJakub Kicinski false, IMMED_SHIFT_0B); 452d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, imm >> 16, IMMED_WIDTH_WORD, 453d9ae7f2bSJakub Kicinski false, IMMED_SHIFT_2B); 454d9ae7f2bSJakub Kicinski } 455d9ae7f2bSJakub Kicinski } 456d9ae7f2bSJakub Kicinski 457d9ae7f2bSJakub Kicinski /* ur_load_imm_any() - encode immediate or use tmp register (unrestricted) 458d9ae7f2bSJakub Kicinski * If the @imm is small enough encode it directly in operand and return 459d9ae7f2bSJakub Kicinski * otherwise load @imm to a spare register and return its encoding. 460d9ae7f2bSJakub Kicinski */ 461b3f868dfSJakub Kicinski static swreg ur_load_imm_any(struct nfp_prog *nfp_prog, u32 imm, swreg tmp_reg) 462d9ae7f2bSJakub Kicinski { 463d9ae7f2bSJakub Kicinski if (FIELD_FIT(UR_REG_IMM_MAX, imm)) 464d9ae7f2bSJakub Kicinski return reg_imm(imm); 465d9ae7f2bSJakub Kicinski 466d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, tmp_reg, imm); 467d9ae7f2bSJakub Kicinski return tmp_reg; 468d9ae7f2bSJakub Kicinski } 469d9ae7f2bSJakub Kicinski 470d9ae7f2bSJakub Kicinski /* re_load_imm_any() - encode immediate or use tmp register (restricted) 471d9ae7f2bSJakub Kicinski * If the @imm is small enough encode it directly in operand and return 472d9ae7f2bSJakub Kicinski * otherwise load @imm to a spare register and return its encoding. 473d9ae7f2bSJakub Kicinski */ 474b3f868dfSJakub Kicinski static swreg re_load_imm_any(struct nfp_prog *nfp_prog, u32 imm, swreg tmp_reg) 475d9ae7f2bSJakub Kicinski { 476d9ae7f2bSJakub Kicinski if (FIELD_FIT(RE_REG_IMM_MAX, imm)) 477d9ae7f2bSJakub Kicinski return reg_imm(imm); 478d9ae7f2bSJakub Kicinski 479d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, tmp_reg, imm); 480d9ae7f2bSJakub Kicinski return tmp_reg; 481d9ae7f2bSJakub Kicinski } 482d9ae7f2bSJakub Kicinski 483ff42bb9fSJakub Kicinski static void wrp_nops(struct nfp_prog *nfp_prog, unsigned int count) 484ff42bb9fSJakub Kicinski { 485ff42bb9fSJakub Kicinski while (count--) 486ff42bb9fSJakub Kicinski emit_nop(nfp_prog); 487ff42bb9fSJakub Kicinski } 488ff42bb9fSJakub Kicinski 489d9ae7f2bSJakub Kicinski static void 490d9ae7f2bSJakub Kicinski wrp_br_special(struct nfp_prog *nfp_prog, enum br_mask mask, 491d9ae7f2bSJakub Kicinski enum br_special special) 492d9ae7f2bSJakub Kicinski { 493d9ae7f2bSJakub Kicinski emit_br(nfp_prog, mask, 0, 0); 494d9ae7f2bSJakub Kicinski 495d9ae7f2bSJakub Kicinski nfp_prog->prog[nfp_prog->prog_len - 1] |= 496d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_SPECIAL, special); 497d9ae7f2bSJakub Kicinski } 498d9ae7f2bSJakub Kicinski 499c000dfb5SJakub Kicinski static void wrp_mov(struct nfp_prog *nfp_prog, swreg dst, swreg src) 500c000dfb5SJakub Kicinski { 501c000dfb5SJakub Kicinski emit_alu(nfp_prog, dst, reg_none(), ALU_OP_NONE, src); 502c000dfb5SJakub Kicinski } 503c000dfb5SJakub Kicinski 504d9ae7f2bSJakub Kicinski static void wrp_reg_mov(struct nfp_prog *nfp_prog, u16 dst, u16 src) 505d9ae7f2bSJakub Kicinski { 506c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_both(dst), reg_b(src)); 507d9ae7f2bSJakub Kicinski } 508d9ae7f2bSJakub Kicinski 509d9ae7f2bSJakub Kicinski static int 5100a793977SJakub Kicinski data_ld(struct nfp_prog *nfp_prog, swreg offset, u8 dst_gpr, int size) 511d9ae7f2bSJakub Kicinski { 512d9ae7f2bSJakub Kicinski unsigned int i; 513d9ae7f2bSJakub Kicinski u16 shift, sz; 514d9ae7f2bSJakub Kicinski 515d9ae7f2bSJakub Kicinski /* We load the value from the address indicated in @offset and then 516d9ae7f2bSJakub Kicinski * shift out the data we don't need. Note: this is big endian! 517d9ae7f2bSJakub Kicinski */ 5180a793977SJakub Kicinski sz = max(size, 4); 519d9ae7f2bSJakub Kicinski shift = size < 4 ? 4 - size : 0; 520d9ae7f2bSJakub Kicinski 5210a793977SJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_READ8, CMD_MODE_32b, 0, 5220a793977SJakub Kicinski pptr_reg(nfp_prog), offset, sz - 1, true); 5230a793977SJakub Kicinski 5240a793977SJakub Kicinski i = 0; 5250a793977SJakub Kicinski if (shift) 5260a793977SJakub Kicinski emit_shf(nfp_prog, reg_both(dst_gpr), reg_none(), SHF_OP_NONE, 5270a793977SJakub Kicinski reg_xfer(0), SHF_SC_R_SHF, shift * 8); 5280a793977SJakub Kicinski else 5290a793977SJakub Kicinski for (; i * 4 < size; i++) 5300a793977SJakub Kicinski wrp_mov(nfp_prog, reg_both(dst_gpr + i), reg_xfer(i)); 5310a793977SJakub Kicinski 5320a793977SJakub Kicinski if (i < 2) 5330a793977SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst_gpr + 1), 0); 5340a793977SJakub Kicinski 5350a793977SJakub Kicinski return 0; 5360a793977SJakub Kicinski } 5370a793977SJakub Kicinski 5380a793977SJakub Kicinski static int 5392ca71441SJakub Kicinski data_ld_host_order(struct nfp_prog *nfp_prog, u8 src_gpr, swreg offset, 5402ca71441SJakub Kicinski u8 dst_gpr, int size) 5412ca71441SJakub Kicinski { 5422ca71441SJakub Kicinski unsigned int i; 5432ca71441SJakub Kicinski u8 mask, sz; 5442ca71441SJakub Kicinski 5452ca71441SJakub Kicinski /* We load the value from the address indicated in @offset and then 5462ca71441SJakub Kicinski * mask out the data we don't need. Note: this is little endian! 5472ca71441SJakub Kicinski */ 5482ca71441SJakub Kicinski sz = max(size, 4); 5492ca71441SJakub Kicinski mask = size < 4 ? GENMASK(size - 1, 0) : 0; 5502ca71441SJakub Kicinski 5512ca71441SJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_READ32_SWAP, CMD_MODE_32b, 0, 5522ca71441SJakub Kicinski reg_a(src_gpr), offset, sz / 4 - 1, true); 5532ca71441SJakub Kicinski 5542ca71441SJakub Kicinski i = 0; 5552ca71441SJakub Kicinski if (mask) 5562ca71441SJakub Kicinski emit_ld_field_any(nfp_prog, reg_both(dst_gpr), mask, 5572ca71441SJakub Kicinski reg_xfer(0), SHF_SC_NONE, 0, true); 5582ca71441SJakub Kicinski else 5592ca71441SJakub Kicinski for (; i * 4 < size; i++) 5602ca71441SJakub Kicinski wrp_mov(nfp_prog, reg_both(dst_gpr + i), reg_xfer(i)); 5612ca71441SJakub Kicinski 5622ca71441SJakub Kicinski if (i < 2) 5632ca71441SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst_gpr + 1), 0); 5642ca71441SJakub Kicinski 5652ca71441SJakub Kicinski return 0; 5662ca71441SJakub Kicinski } 5672ca71441SJakub Kicinski 5682ca71441SJakub Kicinski static int 5690a793977SJakub Kicinski construct_data_ind_ld(struct nfp_prog *nfp_prog, u16 offset, u16 src, u8 size) 5700a793977SJakub Kicinski { 5710a793977SJakub Kicinski swreg tmp_reg; 5720a793977SJakub Kicinski 573d9ae7f2bSJakub Kicinski /* Calculate the true offset (src_reg + imm) */ 574d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, offset, imm_b(nfp_prog)); 5750a793977SJakub Kicinski emit_alu(nfp_prog, imm_both(nfp_prog), reg_a(src), ALU_OP_ADD, tmp_reg); 5760a793977SJakub Kicinski 577d9ae7f2bSJakub Kicinski /* Check packet length (size guaranteed to fit b/c it's u8) */ 578d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_a(nfp_prog), 579d9ae7f2bSJakub Kicinski imm_a(nfp_prog), ALU_OP_ADD, reg_imm(size)); 580d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 58118e53b6cSJakub Kicinski plen_reg(nfp_prog), ALU_OP_SUB, imm_a(nfp_prog)); 582d9ae7f2bSJakub Kicinski wrp_br_special(nfp_prog, BR_BLO, OP_BR_GO_ABORT); 5830a793977SJakub Kicinski 584d9ae7f2bSJakub Kicinski /* Load data */ 5850a793977SJakub Kicinski return data_ld(nfp_prog, imm_b(nfp_prog), 0, size); 586d9ae7f2bSJakub Kicinski } 587d9ae7f2bSJakub Kicinski 588d9ae7f2bSJakub Kicinski static int construct_data_ld(struct nfp_prog *nfp_prog, u16 offset, u8 size) 589d9ae7f2bSJakub Kicinski { 5900a793977SJakub Kicinski swreg tmp_reg; 5910a793977SJakub Kicinski 5920a793977SJakub Kicinski /* Check packet length */ 5930a793977SJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, offset + size, imm_a(nfp_prog)); 5940a793977SJakub Kicinski emit_alu(nfp_prog, reg_none(), plen_reg(nfp_prog), ALU_OP_SUB, tmp_reg); 5950a793977SJakub Kicinski wrp_br_special(nfp_prog, BR_BLO, OP_BR_GO_ABORT); 5960a793977SJakub Kicinski 5970a793977SJakub Kicinski /* Load data */ 5980a793977SJakub Kicinski tmp_reg = re_load_imm_any(nfp_prog, offset, imm_b(nfp_prog)); 5990a793977SJakub Kicinski return data_ld(nfp_prog, tmp_reg, 0, size); 600d9ae7f2bSJakub Kicinski } 601d9ae7f2bSJakub Kicinski 602e663fe38SJakub Kicinski static int 603e663fe38SJakub Kicinski data_stx_host_order(struct nfp_prog *nfp_prog, u8 dst_gpr, swreg offset, 604e663fe38SJakub Kicinski u8 src_gpr, u8 size) 605e663fe38SJakub Kicinski { 606e663fe38SJakub Kicinski unsigned int i; 607e663fe38SJakub Kicinski 608e663fe38SJakub Kicinski for (i = 0; i * 4 < size; i++) 609e663fe38SJakub Kicinski wrp_mov(nfp_prog, reg_xfer(i), reg_a(src_gpr + i)); 610e663fe38SJakub Kicinski 611e663fe38SJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_WRITE8_SWAP, CMD_MODE_32b, 0, 612e663fe38SJakub Kicinski reg_a(dst_gpr), offset, size - 1, true); 613e663fe38SJakub Kicinski 614e663fe38SJakub Kicinski return 0; 615e663fe38SJakub Kicinski } 616e663fe38SJakub Kicinski 617e663fe38SJakub Kicinski static int 618e663fe38SJakub Kicinski data_st_host_order(struct nfp_prog *nfp_prog, u8 dst_gpr, swreg offset, 619e663fe38SJakub Kicinski u64 imm, u8 size) 620e663fe38SJakub Kicinski { 621e663fe38SJakub Kicinski wrp_immed(nfp_prog, reg_xfer(0), imm); 622e663fe38SJakub Kicinski if (size == 8) 623e663fe38SJakub Kicinski wrp_immed(nfp_prog, reg_xfer(1), imm >> 32); 624e663fe38SJakub Kicinski 625e663fe38SJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_WRITE8_SWAP, CMD_MODE_32b, 0, 626e663fe38SJakub Kicinski reg_a(dst_gpr), offset, size - 1, true); 627e663fe38SJakub Kicinski 628e663fe38SJakub Kicinski return 0; 629e663fe38SJakub Kicinski } 630e663fe38SJakub Kicinski 631ee9133a8SJakub Kicinski typedef int 632ee9133a8SJakub Kicinski (*lmem_step)(struct nfp_prog *nfp_prog, u8 gpr, u8 gpr_byte, s32 off, 6332df03a50SJakub Kicinski unsigned int size, bool first, bool new_gpr, bool last, bool lm3, 6342df03a50SJakub Kicinski bool needs_inc); 635a82b23fbSJakub Kicinski 636a82b23fbSJakub Kicinski static int 637a82b23fbSJakub Kicinski wrp_lmem_load(struct nfp_prog *nfp_prog, u8 dst, u8 dst_byte, s32 off, 6382df03a50SJakub Kicinski unsigned int size, bool first, bool new_gpr, bool last, bool lm3, 6392df03a50SJakub Kicinski bool needs_inc) 640a82b23fbSJakub Kicinski { 6412df03a50SJakub Kicinski bool should_inc = needs_inc && new_gpr && !last; 642a82b23fbSJakub Kicinski u32 idx, src_byte; 643a82b23fbSJakub Kicinski enum shf_sc sc; 644a82b23fbSJakub Kicinski swreg reg; 645a82b23fbSJakub Kicinski int shf; 646a82b23fbSJakub Kicinski u8 mask; 647a82b23fbSJakub Kicinski 648a82b23fbSJakub Kicinski if (WARN_ON_ONCE(dst_byte + size > 4 || off % 4 + size > 4)) 649a82b23fbSJakub Kicinski return -EOPNOTSUPP; 650a82b23fbSJakub Kicinski 651a82b23fbSJakub Kicinski idx = off / 4; 652a82b23fbSJakub Kicinski 653a82b23fbSJakub Kicinski /* Move the entire word */ 654a82b23fbSJakub Kicinski if (size == 4) { 6552df03a50SJakub Kicinski wrp_mov(nfp_prog, reg_both(dst), 6562df03a50SJakub Kicinski should_inc ? reg_lm_inc(3) : reg_lm(lm3 ? 3 : 0, idx)); 657a82b23fbSJakub Kicinski return 0; 658a82b23fbSJakub Kicinski } 659a82b23fbSJakub Kicinski 6602df03a50SJakub Kicinski if (WARN_ON_ONCE(lm3 && idx > RE_REG_LM_IDX_MAX)) 6612df03a50SJakub Kicinski return -EOPNOTSUPP; 6622df03a50SJakub Kicinski 663a82b23fbSJakub Kicinski src_byte = off % 4; 664a82b23fbSJakub Kicinski 665a82b23fbSJakub Kicinski mask = (1 << size) - 1; 666a82b23fbSJakub Kicinski mask <<= dst_byte; 667a82b23fbSJakub Kicinski 668a82b23fbSJakub Kicinski if (WARN_ON_ONCE(mask > 0xf)) 669a82b23fbSJakub Kicinski return -EOPNOTSUPP; 670a82b23fbSJakub Kicinski 671a82b23fbSJakub Kicinski shf = abs(src_byte - dst_byte) * 8; 672a82b23fbSJakub Kicinski if (src_byte == dst_byte) { 673a82b23fbSJakub Kicinski sc = SHF_SC_NONE; 674a82b23fbSJakub Kicinski } else if (src_byte < dst_byte) { 675a82b23fbSJakub Kicinski shf = 32 - shf; 676a82b23fbSJakub Kicinski sc = SHF_SC_L_SHF; 677a82b23fbSJakub Kicinski } else { 678a82b23fbSJakub Kicinski sc = SHF_SC_R_SHF; 679a82b23fbSJakub Kicinski } 680a82b23fbSJakub Kicinski 681a82b23fbSJakub Kicinski /* ld_field can address fewer indexes, if offset too large do RMW. 682a82b23fbSJakub Kicinski * Because we RMV twice we waste 2 cycles on unaligned 8 byte writes. 683a82b23fbSJakub Kicinski */ 684a82b23fbSJakub Kicinski if (idx <= RE_REG_LM_IDX_MAX) { 6852df03a50SJakub Kicinski reg = reg_lm(lm3 ? 3 : 0, idx); 686a82b23fbSJakub Kicinski } else { 687a82b23fbSJakub Kicinski reg = imm_a(nfp_prog); 6889a90c83cSJakub Kicinski /* If it's not the first part of the load and we start a new GPR 6899a90c83cSJakub Kicinski * that means we are loading a second part of the LMEM word into 6909a90c83cSJakub Kicinski * a new GPR. IOW we've already looked that LMEM word and 6919a90c83cSJakub Kicinski * therefore it has been loaded into imm_a(). 6929a90c83cSJakub Kicinski */ 6939a90c83cSJakub Kicinski if (first || !new_gpr) 694a82b23fbSJakub Kicinski wrp_mov(nfp_prog, reg, reg_lm(0, idx)); 695a82b23fbSJakub Kicinski } 696a82b23fbSJakub Kicinski 697a82b23fbSJakub Kicinski emit_ld_field_any(nfp_prog, reg_both(dst), mask, reg, sc, shf, new_gpr); 698a82b23fbSJakub Kicinski 6992df03a50SJakub Kicinski if (should_inc) 7002df03a50SJakub Kicinski wrp_mov(nfp_prog, reg_none(), reg_lm_inc(3)); 7012df03a50SJakub Kicinski 702a82b23fbSJakub Kicinski return 0; 703a82b23fbSJakub Kicinski } 704ee9133a8SJakub Kicinski 705ee9133a8SJakub Kicinski static int 706ee9133a8SJakub Kicinski wrp_lmem_store(struct nfp_prog *nfp_prog, u8 src, u8 src_byte, s32 off, 7072df03a50SJakub Kicinski unsigned int size, bool first, bool new_gpr, bool last, bool lm3, 7082df03a50SJakub Kicinski bool needs_inc) 709ee9133a8SJakub Kicinski { 7102df03a50SJakub Kicinski bool should_inc = needs_inc && new_gpr && !last; 711ee9133a8SJakub Kicinski u32 idx, dst_byte; 712ee9133a8SJakub Kicinski enum shf_sc sc; 713ee9133a8SJakub Kicinski swreg reg; 714ee9133a8SJakub Kicinski int shf; 715ee9133a8SJakub Kicinski u8 mask; 716ee9133a8SJakub Kicinski 717ee9133a8SJakub Kicinski if (WARN_ON_ONCE(src_byte + size > 4 || off % 4 + size > 4)) 718ee9133a8SJakub Kicinski return -EOPNOTSUPP; 719ee9133a8SJakub Kicinski 720ee9133a8SJakub Kicinski idx = off / 4; 721ee9133a8SJakub Kicinski 722ee9133a8SJakub Kicinski /* Move the entire word */ 723ee9133a8SJakub Kicinski if (size == 4) { 7242df03a50SJakub Kicinski wrp_mov(nfp_prog, 7252df03a50SJakub Kicinski should_inc ? reg_lm_inc(3) : reg_lm(lm3 ? 3 : 0, idx), 7262df03a50SJakub Kicinski reg_b(src)); 727ee9133a8SJakub Kicinski return 0; 728ee9133a8SJakub Kicinski } 729ee9133a8SJakub Kicinski 7302df03a50SJakub Kicinski if (WARN_ON_ONCE(lm3 && idx > RE_REG_LM_IDX_MAX)) 7312df03a50SJakub Kicinski return -EOPNOTSUPP; 7322df03a50SJakub Kicinski 733ee9133a8SJakub Kicinski dst_byte = off % 4; 734ee9133a8SJakub Kicinski 735ee9133a8SJakub Kicinski mask = (1 << size) - 1; 736ee9133a8SJakub Kicinski mask <<= dst_byte; 737ee9133a8SJakub Kicinski 738ee9133a8SJakub Kicinski if (WARN_ON_ONCE(mask > 0xf)) 739ee9133a8SJakub Kicinski return -EOPNOTSUPP; 740ee9133a8SJakub Kicinski 741ee9133a8SJakub Kicinski shf = abs(src_byte - dst_byte) * 8; 742ee9133a8SJakub Kicinski if (src_byte == dst_byte) { 743ee9133a8SJakub Kicinski sc = SHF_SC_NONE; 744ee9133a8SJakub Kicinski } else if (src_byte < dst_byte) { 745ee9133a8SJakub Kicinski shf = 32 - shf; 746ee9133a8SJakub Kicinski sc = SHF_SC_L_SHF; 747ee9133a8SJakub Kicinski } else { 748ee9133a8SJakub Kicinski sc = SHF_SC_R_SHF; 749ee9133a8SJakub Kicinski } 750ee9133a8SJakub Kicinski 751ee9133a8SJakub Kicinski /* ld_field can address fewer indexes, if offset too large do RMW. 752ee9133a8SJakub Kicinski * Because we RMV twice we waste 2 cycles on unaligned 8 byte writes. 753ee9133a8SJakub Kicinski */ 754ee9133a8SJakub Kicinski if (idx <= RE_REG_LM_IDX_MAX) { 7552df03a50SJakub Kicinski reg = reg_lm(lm3 ? 3 : 0, idx); 756ee9133a8SJakub Kicinski } else { 757ee9133a8SJakub Kicinski reg = imm_a(nfp_prog); 7589a90c83cSJakub Kicinski /* Only first and last LMEM locations are going to need RMW, 7599a90c83cSJakub Kicinski * the middle location will be overwritten fully. 7609a90c83cSJakub Kicinski */ 7619a90c83cSJakub Kicinski if (first || last) 762ee9133a8SJakub Kicinski wrp_mov(nfp_prog, reg, reg_lm(0, idx)); 763ee9133a8SJakub Kicinski } 764ee9133a8SJakub Kicinski 765ee9133a8SJakub Kicinski emit_ld_field(nfp_prog, reg, mask, reg_b(src), sc, shf); 766ee9133a8SJakub Kicinski 7679a90c83cSJakub Kicinski if (new_gpr || last) { 768ee9133a8SJakub Kicinski if (idx > RE_REG_LM_IDX_MAX) 769ee9133a8SJakub Kicinski wrp_mov(nfp_prog, reg_lm(0, idx), reg); 7702df03a50SJakub Kicinski if (should_inc) 7712df03a50SJakub Kicinski wrp_mov(nfp_prog, reg_none(), reg_lm_inc(3)); 7729a90c83cSJakub Kicinski } 773ee9133a8SJakub Kicinski 774ee9133a8SJakub Kicinski return 0; 775ee9133a8SJakub Kicinski } 776ee9133a8SJakub Kicinski 777ee9133a8SJakub Kicinski static int 778ee9133a8SJakub Kicinski mem_op_stack(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 779b14157eeSJakub Kicinski unsigned int size, unsigned int ptr_off, u8 gpr, u8 ptr_gpr, 780b14157eeSJakub Kicinski bool clr_gpr, lmem_step step) 781ee9133a8SJakub Kicinski { 782d3488480SJakub Kicinski s32 off = nfp_prog->stack_depth + meta->insn.off + ptr_off; 7839a90c83cSJakub Kicinski bool first = true, last; 7842df03a50SJakub Kicinski bool needs_inc = false; 7852df03a50SJakub Kicinski swreg stack_off_reg; 786a82b23fbSJakub Kicinski u8 prev_gpr = 255; 787ee9133a8SJakub Kicinski u32 gpr_byte = 0; 7882df03a50SJakub Kicinski bool lm3 = true; 789ee9133a8SJakub Kicinski int ret; 790ee9133a8SJakub Kicinski 791b14157eeSJakub Kicinski if (meta->ptr_not_const) { 792b14157eeSJakub Kicinski /* Use of the last encountered ptr_off is OK, they all have 793b14157eeSJakub Kicinski * the same alignment. Depend on low bits of value being 794b14157eeSJakub Kicinski * discarded when written to LMaddr register. 795b14157eeSJakub Kicinski */ 796b14157eeSJakub Kicinski stack_off_reg = ur_load_imm_any(nfp_prog, meta->insn.off, 797b14157eeSJakub Kicinski stack_imm(nfp_prog)); 798b14157eeSJakub Kicinski 799b14157eeSJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), 800b14157eeSJakub Kicinski reg_a(ptr_gpr), ALU_OP_ADD, stack_off_reg); 801b14157eeSJakub Kicinski 802b14157eeSJakub Kicinski needs_inc = true; 803b14157eeSJakub Kicinski } else if (off + size <= 64) { 8042df03a50SJakub Kicinski /* We can reach bottom 64B with LMaddr0 */ 8052df03a50SJakub Kicinski lm3 = false; 8062df03a50SJakub Kicinski } else if (round_down(off, 32) == round_down(off + size - 1, 32)) { 8072df03a50SJakub Kicinski /* We have to set up a new pointer. If we know the offset 8082df03a50SJakub Kicinski * and the entire access falls into a single 32 byte aligned 8092df03a50SJakub Kicinski * window we won't have to increment the LM pointer. 8102df03a50SJakub Kicinski * The 32 byte alignment is imporant because offset is ORed in 8112df03a50SJakub Kicinski * not added when doing *l$indexN[off]. 8122df03a50SJakub Kicinski */ 8132df03a50SJakub Kicinski stack_off_reg = ur_load_imm_any(nfp_prog, round_down(off, 32), 8142df03a50SJakub Kicinski stack_imm(nfp_prog)); 8152df03a50SJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), 8162df03a50SJakub Kicinski stack_reg(nfp_prog), ALU_OP_ADD, stack_off_reg); 8172df03a50SJakub Kicinski 8182df03a50SJakub Kicinski off %= 32; 8192df03a50SJakub Kicinski } else { 8202df03a50SJakub Kicinski stack_off_reg = ur_load_imm_any(nfp_prog, round_down(off, 4), 8212df03a50SJakub Kicinski stack_imm(nfp_prog)); 8222df03a50SJakub Kicinski 8232df03a50SJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), 8242df03a50SJakub Kicinski stack_reg(nfp_prog), ALU_OP_ADD, stack_off_reg); 8252df03a50SJakub Kicinski 8262df03a50SJakub Kicinski needs_inc = true; 8272df03a50SJakub Kicinski } 8282df03a50SJakub Kicinski if (lm3) { 8292df03a50SJakub Kicinski emit_csr_wr(nfp_prog, imm_b(nfp_prog), NFP_CSR_ACT_LM_ADDR3); 8302df03a50SJakub Kicinski /* For size < 4 one slot will be filled by zeroing of upper. */ 8312df03a50SJakub Kicinski wrp_nops(nfp_prog, clr_gpr && size < 8 ? 2 : 3); 8322df03a50SJakub Kicinski } 8332df03a50SJakub Kicinski 834a82b23fbSJakub Kicinski if (clr_gpr && size < 8) 835a82b23fbSJakub Kicinski wrp_immed(nfp_prog, reg_both(gpr + 1), 0); 836a82b23fbSJakub Kicinski 837ee9133a8SJakub Kicinski while (size) { 838ee9133a8SJakub Kicinski u32 slice_end; 839ee9133a8SJakub Kicinski u8 slice_size; 840ee9133a8SJakub Kicinski 841ee9133a8SJakub Kicinski slice_size = min(size, 4 - gpr_byte); 842ee9133a8SJakub Kicinski slice_end = min(off + slice_size, round_up(off + 1, 4)); 843ee9133a8SJakub Kicinski slice_size = slice_end - off; 844ee9133a8SJakub Kicinski 8459a90c83cSJakub Kicinski last = slice_size == size; 8469a90c83cSJakub Kicinski 8472df03a50SJakub Kicinski if (needs_inc) 8482df03a50SJakub Kicinski off %= 4; 8492df03a50SJakub Kicinski 850a82b23fbSJakub Kicinski ret = step(nfp_prog, gpr, gpr_byte, off, slice_size, 8512df03a50SJakub Kicinski first, gpr != prev_gpr, last, lm3, needs_inc); 852ee9133a8SJakub Kicinski if (ret) 853ee9133a8SJakub Kicinski return ret; 854ee9133a8SJakub Kicinski 855a82b23fbSJakub Kicinski prev_gpr = gpr; 8569a90c83cSJakub Kicinski first = false; 8579a90c83cSJakub Kicinski 858ee9133a8SJakub Kicinski gpr_byte += slice_size; 859ee9133a8SJakub Kicinski if (gpr_byte >= 4) { 860ee9133a8SJakub Kicinski gpr_byte -= 4; 861ee9133a8SJakub Kicinski gpr++; 862ee9133a8SJakub Kicinski } 863ee9133a8SJakub Kicinski 864ee9133a8SJakub Kicinski size -= slice_size; 865ee9133a8SJakub Kicinski off += slice_size; 866ee9133a8SJakub Kicinski } 867ee9133a8SJakub Kicinski 868ee9133a8SJakub Kicinski return 0; 869ee9133a8SJakub Kicinski } 870ee9133a8SJakub Kicinski 871d9ae7f2bSJakub Kicinski static void 872d9ae7f2bSJakub Kicinski wrp_alu_imm(struct nfp_prog *nfp_prog, u8 dst, enum alu_op alu_op, u32 imm) 873d9ae7f2bSJakub Kicinski { 874b3f868dfSJakub Kicinski swreg tmp_reg; 875d9ae7f2bSJakub Kicinski 876d9ae7f2bSJakub Kicinski if (alu_op == ALU_OP_AND) { 877d9ae7f2bSJakub Kicinski if (!imm) 878d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), 0); 879d9ae7f2bSJakub Kicinski if (!imm || !~imm) 880d9ae7f2bSJakub Kicinski return; 881d9ae7f2bSJakub Kicinski } 882d9ae7f2bSJakub Kicinski if (alu_op == ALU_OP_OR) { 883d9ae7f2bSJakub Kicinski if (!~imm) 884d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), ~0U); 885d9ae7f2bSJakub Kicinski if (!imm || !~imm) 886d9ae7f2bSJakub Kicinski return; 887d9ae7f2bSJakub Kicinski } 888d9ae7f2bSJakub Kicinski if (alu_op == ALU_OP_XOR) { 889d9ae7f2bSJakub Kicinski if (!~imm) 890d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_none(), 8915d42ced1SJiong Wang ALU_OP_NOT, reg_b(dst)); 892d9ae7f2bSJakub Kicinski if (!imm || !~imm) 893d9ae7f2bSJakub Kicinski return; 894d9ae7f2bSJakub Kicinski } 895d9ae7f2bSJakub Kicinski 896d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm, imm_b(nfp_prog)); 897d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_a(dst), alu_op, tmp_reg); 898d9ae7f2bSJakub Kicinski } 899d9ae7f2bSJakub Kicinski 900d9ae7f2bSJakub Kicinski static int 901d9ae7f2bSJakub Kicinski wrp_alu64_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 902d9ae7f2bSJakub Kicinski enum alu_op alu_op, bool skip) 903d9ae7f2bSJakub Kicinski { 904d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 905d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 906d9ae7f2bSJakub Kicinski 907d9ae7f2bSJakub Kicinski if (skip) { 908d9ae7f2bSJakub Kicinski meta->skip = true; 909d9ae7f2bSJakub Kicinski return 0; 910d9ae7f2bSJakub Kicinski } 911d9ae7f2bSJakub Kicinski 912d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, alu_op, imm & ~0U); 913d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2 + 1, alu_op, imm >> 32); 914d9ae7f2bSJakub Kicinski 915d9ae7f2bSJakub Kicinski return 0; 916d9ae7f2bSJakub Kicinski } 917d9ae7f2bSJakub Kicinski 918d9ae7f2bSJakub Kicinski static int 919d9ae7f2bSJakub Kicinski wrp_alu64_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 920d9ae7f2bSJakub Kicinski enum alu_op alu_op) 921d9ae7f2bSJakub Kicinski { 922d9ae7f2bSJakub Kicinski u8 dst = meta->insn.dst_reg * 2, src = meta->insn.src_reg * 2; 923d9ae7f2bSJakub Kicinski 924d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_a(dst), alu_op, reg_b(src)); 925d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst + 1), 926d9ae7f2bSJakub Kicinski reg_a(dst + 1), alu_op, reg_b(src + 1)); 927d9ae7f2bSJakub Kicinski 928d9ae7f2bSJakub Kicinski return 0; 929d9ae7f2bSJakub Kicinski } 930d9ae7f2bSJakub Kicinski 931d9ae7f2bSJakub Kicinski static int 932d9ae7f2bSJakub Kicinski wrp_alu32_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 933d9ae7f2bSJakub Kicinski enum alu_op alu_op, bool skip) 934d9ae7f2bSJakub Kicinski { 935d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 936d9ae7f2bSJakub Kicinski 937d9ae7f2bSJakub Kicinski if (skip) { 938d9ae7f2bSJakub Kicinski meta->skip = true; 939d9ae7f2bSJakub Kicinski return 0; 940d9ae7f2bSJakub Kicinski } 941d9ae7f2bSJakub Kicinski 942d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, alu_op, insn->imm); 943d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 944d9ae7f2bSJakub Kicinski 945d9ae7f2bSJakub Kicinski return 0; 946d9ae7f2bSJakub Kicinski } 947d9ae7f2bSJakub Kicinski 948d9ae7f2bSJakub Kicinski static int 949d9ae7f2bSJakub Kicinski wrp_alu32_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 950d9ae7f2bSJakub Kicinski enum alu_op alu_op) 951d9ae7f2bSJakub Kicinski { 952d9ae7f2bSJakub Kicinski u8 dst = meta->insn.dst_reg * 2, src = meta->insn.src_reg * 2; 953d9ae7f2bSJakub Kicinski 954d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_a(dst), alu_op, reg_b(src)); 955d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 956d9ae7f2bSJakub Kicinski 957d9ae7f2bSJakub Kicinski return 0; 958d9ae7f2bSJakub Kicinski } 959d9ae7f2bSJakub Kicinski 960d9ae7f2bSJakub Kicinski static void 961d9ae7f2bSJakub Kicinski wrp_test_reg_one(struct nfp_prog *nfp_prog, u8 dst, enum alu_op alu_op, u8 src, 962d9ae7f2bSJakub Kicinski enum br_mask br_mask, u16 off) 963d9ae7f2bSJakub Kicinski { 964d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(dst), alu_op, reg_b(src)); 965d9ae7f2bSJakub Kicinski emit_br(nfp_prog, br_mask, off, 0); 966d9ae7f2bSJakub Kicinski } 967d9ae7f2bSJakub Kicinski 968d9ae7f2bSJakub Kicinski static int 969d9ae7f2bSJakub Kicinski wrp_test_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 970d9ae7f2bSJakub Kicinski enum alu_op alu_op, enum br_mask br_mask) 971d9ae7f2bSJakub Kicinski { 972d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 973d9ae7f2bSJakub Kicinski 974d9ae7f2bSJakub Kicinski wrp_test_reg_one(nfp_prog, insn->dst_reg * 2, alu_op, 975d9ae7f2bSJakub Kicinski insn->src_reg * 2, br_mask, insn->off); 976d9ae7f2bSJakub Kicinski wrp_test_reg_one(nfp_prog, insn->dst_reg * 2 + 1, alu_op, 977d9ae7f2bSJakub Kicinski insn->src_reg * 2 + 1, br_mask, insn->off); 978d9ae7f2bSJakub Kicinski 979d9ae7f2bSJakub Kicinski return 0; 980d9ae7f2bSJakub Kicinski } 981d9ae7f2bSJakub Kicinski 982d9ae7f2bSJakub Kicinski static int 983d9ae7f2bSJakub Kicinski wrp_cmp_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 984d9ae7f2bSJakub Kicinski enum br_mask br_mask, bool swap) 985d9ae7f2bSJakub Kicinski { 986d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 987d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 988d9ae7f2bSJakub Kicinski u8 reg = insn->dst_reg * 2; 989b3f868dfSJakub Kicinski swreg tmp_reg; 990d9ae7f2bSJakub Kicinski 991d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 992d9ae7f2bSJakub Kicinski if (!swap) 993d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(reg), ALU_OP_SUB, tmp_reg); 994d9ae7f2bSJakub Kicinski else 995d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), tmp_reg, ALU_OP_SUB, reg_a(reg)); 996d9ae7f2bSJakub Kicinski 997d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 998d9ae7f2bSJakub Kicinski if (!swap) 999d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1000d9ae7f2bSJakub Kicinski reg_a(reg + 1), ALU_OP_SUB_C, tmp_reg); 1001d9ae7f2bSJakub Kicinski else 1002d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1003d9ae7f2bSJakub Kicinski tmp_reg, ALU_OP_SUB_C, reg_a(reg + 1)); 1004d9ae7f2bSJakub Kicinski 1005d9ae7f2bSJakub Kicinski emit_br(nfp_prog, br_mask, insn->off, 0); 1006d9ae7f2bSJakub Kicinski 1007d9ae7f2bSJakub Kicinski return 0; 1008d9ae7f2bSJakub Kicinski } 1009d9ae7f2bSJakub Kicinski 1010d9ae7f2bSJakub Kicinski static int 1011d9ae7f2bSJakub Kicinski wrp_cmp_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1012d9ae7f2bSJakub Kicinski enum br_mask br_mask, bool swap) 1013d9ae7f2bSJakub Kicinski { 1014d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 101526fa818dSJakub Kicinski u8 areg, breg; 101626fa818dSJakub Kicinski 101726fa818dSJakub Kicinski areg = insn->dst_reg * 2; 101826fa818dSJakub Kicinski breg = insn->src_reg * 2; 1019d9ae7f2bSJakub Kicinski 1020d9ae7f2bSJakub Kicinski if (swap) { 1021d9ae7f2bSJakub Kicinski areg ^= breg; 1022d9ae7f2bSJakub Kicinski breg ^= areg; 1023d9ae7f2bSJakub Kicinski areg ^= breg; 1024d9ae7f2bSJakub Kicinski } 1025d9ae7f2bSJakub Kicinski 1026d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(areg), ALU_OP_SUB, reg_b(breg)); 1027d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1028d9ae7f2bSJakub Kicinski reg_a(areg + 1), ALU_OP_SUB_C, reg_b(breg + 1)); 1029d9ae7f2bSJakub Kicinski emit_br(nfp_prog, br_mask, insn->off, 0); 1030d9ae7f2bSJakub Kicinski 1031d9ae7f2bSJakub Kicinski return 0; 1032d9ae7f2bSJakub Kicinski } 1033d9ae7f2bSJakub Kicinski 10343119d1fdSJakub Kicinski static void wrp_end32(struct nfp_prog *nfp_prog, swreg reg_in, u8 gpr_out) 10353119d1fdSJakub Kicinski { 10363119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr_out), 0xf, reg_in, 10373119d1fdSJakub Kicinski SHF_SC_R_ROT, 8); 10383119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr_out), 0x5, reg_a(gpr_out), 10393119d1fdSJakub Kicinski SHF_SC_R_ROT, 16); 10403119d1fdSJakub Kicinski } 10413119d1fdSJakub Kicinski 1042d9ae7f2bSJakub Kicinski /* --- Callbacks --- */ 1043d9ae7f2bSJakub Kicinski static int mov_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1044d9ae7f2bSJakub Kicinski { 1045d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1046b14157eeSJakub Kicinski u8 dst = insn->dst_reg * 2; 1047b14157eeSJakub Kicinski u8 src = insn->src_reg * 2; 1048d9ae7f2bSJakub Kicinski 1049b14157eeSJakub Kicinski if (insn->src_reg == BPF_REG_10) { 1050b14157eeSJakub Kicinski swreg stack_depth_reg; 1051b14157eeSJakub Kicinski 1052b14157eeSJakub Kicinski stack_depth_reg = ur_load_imm_any(nfp_prog, 1053b14157eeSJakub Kicinski nfp_prog->stack_depth, 1054b14157eeSJakub Kicinski stack_imm(nfp_prog)); 1055b14157eeSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), 1056b14157eeSJakub Kicinski stack_reg(nfp_prog), ALU_OP_ADD, stack_depth_reg); 1057b14157eeSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst + 1), 0); 1058b14157eeSJakub Kicinski } else { 1059b14157eeSJakub Kicinski wrp_reg_mov(nfp_prog, dst, src); 1060b14157eeSJakub Kicinski wrp_reg_mov(nfp_prog, dst + 1, src + 1); 1061b14157eeSJakub Kicinski } 1062d9ae7f2bSJakub Kicinski 1063d9ae7f2bSJakub Kicinski return 0; 1064d9ae7f2bSJakub Kicinski } 1065d9ae7f2bSJakub Kicinski 1066d9ae7f2bSJakub Kicinski static int mov_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1067d9ae7f2bSJakub Kicinski { 1068d9ae7f2bSJakub Kicinski u64 imm = meta->insn.imm; /* sign extend */ 1069d9ae7f2bSJakub Kicinski 1070d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2), imm & ~0U); 1071d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), imm >> 32); 1072d9ae7f2bSJakub Kicinski 1073d9ae7f2bSJakub Kicinski return 0; 1074d9ae7f2bSJakub Kicinski } 1075d9ae7f2bSJakub Kicinski 1076d9ae7f2bSJakub Kicinski static int xor_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1077d9ae7f2bSJakub Kicinski { 1078d9ae7f2bSJakub Kicinski return wrp_alu64_reg(nfp_prog, meta, ALU_OP_XOR); 1079d9ae7f2bSJakub Kicinski } 1080d9ae7f2bSJakub Kicinski 1081d9ae7f2bSJakub Kicinski static int xor_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1082d9ae7f2bSJakub Kicinski { 1083d9ae7f2bSJakub Kicinski return wrp_alu64_imm(nfp_prog, meta, ALU_OP_XOR, !meta->insn.imm); 1084d9ae7f2bSJakub Kicinski } 1085d9ae7f2bSJakub Kicinski 1086d9ae7f2bSJakub Kicinski static int and_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1087d9ae7f2bSJakub Kicinski { 1088d9ae7f2bSJakub Kicinski return wrp_alu64_reg(nfp_prog, meta, ALU_OP_AND); 1089d9ae7f2bSJakub Kicinski } 1090d9ae7f2bSJakub Kicinski 1091d9ae7f2bSJakub Kicinski static int and_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1092d9ae7f2bSJakub Kicinski { 1093d9ae7f2bSJakub Kicinski return wrp_alu64_imm(nfp_prog, meta, ALU_OP_AND, !~meta->insn.imm); 1094d9ae7f2bSJakub Kicinski } 1095d9ae7f2bSJakub Kicinski 1096d9ae7f2bSJakub Kicinski static int or_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1097d9ae7f2bSJakub Kicinski { 1098d9ae7f2bSJakub Kicinski return wrp_alu64_reg(nfp_prog, meta, ALU_OP_OR); 1099d9ae7f2bSJakub Kicinski } 1100d9ae7f2bSJakub Kicinski 1101d9ae7f2bSJakub Kicinski static int or_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1102d9ae7f2bSJakub Kicinski { 1103d9ae7f2bSJakub Kicinski return wrp_alu64_imm(nfp_prog, meta, ALU_OP_OR, !meta->insn.imm); 1104d9ae7f2bSJakub Kicinski } 1105d9ae7f2bSJakub Kicinski 1106d9ae7f2bSJakub Kicinski static int add_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1107d9ae7f2bSJakub Kicinski { 1108d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1109d9ae7f2bSJakub Kicinski 1110d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2), 1111d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_ADD, 1112d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2)); 1113d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 1114d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_ADD_C, 1115d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2 + 1)); 1116d9ae7f2bSJakub Kicinski 1117d9ae7f2bSJakub Kicinski return 0; 1118d9ae7f2bSJakub Kicinski } 1119d9ae7f2bSJakub Kicinski 1120d9ae7f2bSJakub Kicinski static int add_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1121d9ae7f2bSJakub Kicinski { 1122d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1123d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1124d9ae7f2bSJakub Kicinski 1125d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, ALU_OP_ADD, imm & ~0U); 1126d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2 + 1, ALU_OP_ADD_C, imm >> 32); 1127d9ae7f2bSJakub Kicinski 1128d9ae7f2bSJakub Kicinski return 0; 1129d9ae7f2bSJakub Kicinski } 1130d9ae7f2bSJakub Kicinski 1131d9ae7f2bSJakub Kicinski static int sub_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1132d9ae7f2bSJakub Kicinski { 1133d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1134d9ae7f2bSJakub Kicinski 1135d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2), 1136d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_SUB, 1137d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2)); 1138d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 1139d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_SUB_C, 1140d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2 + 1)); 1141d9ae7f2bSJakub Kicinski 1142d9ae7f2bSJakub Kicinski return 0; 1143d9ae7f2bSJakub Kicinski } 1144d9ae7f2bSJakub Kicinski 1145d9ae7f2bSJakub Kicinski static int sub_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1146d9ae7f2bSJakub Kicinski { 1147d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1148d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1149d9ae7f2bSJakub Kicinski 1150d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, ALU_OP_SUB, imm & ~0U); 1151d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2 + 1, ALU_OP_SUB_C, imm >> 32); 1152d9ae7f2bSJakub Kicinski 1153d9ae7f2bSJakub Kicinski return 0; 1154d9ae7f2bSJakub Kicinski } 1155d9ae7f2bSJakub Kicinski 1156254ef4d7SJiong Wang static int neg_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1157254ef4d7SJiong Wang { 1158254ef4d7SJiong Wang const struct bpf_insn *insn = &meta->insn; 1159254ef4d7SJiong Wang 1160254ef4d7SJiong Wang emit_alu(nfp_prog, reg_both(insn->dst_reg * 2), reg_imm(0), 1161254ef4d7SJiong Wang ALU_OP_SUB, reg_b(insn->dst_reg * 2)); 1162254ef4d7SJiong Wang emit_alu(nfp_prog, reg_both(insn->dst_reg * 2 + 1), reg_imm(0), 1163254ef4d7SJiong Wang ALU_OP_SUB_C, reg_b(insn->dst_reg * 2 + 1)); 1164254ef4d7SJiong Wang 1165254ef4d7SJiong Wang return 0; 1166254ef4d7SJiong Wang } 1167254ef4d7SJiong Wang 1168d9ae7f2bSJakub Kicinski static int shl_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1169d9ae7f2bSJakub Kicinski { 1170d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 11713cae1319SJakub Kicinski u8 dst = insn->dst_reg * 2; 1172d9ae7f2bSJakub Kicinski 11733cae1319SJakub Kicinski if (insn->imm < 32) { 11743cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst + 1), 11753cae1319SJakub Kicinski reg_a(dst + 1), SHF_OP_NONE, reg_b(dst), 11763cae1319SJakub Kicinski SHF_SC_R_DSHF, 32 - insn->imm); 11773cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst), 11783cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst), 11793cae1319SJakub Kicinski SHF_SC_L_SHF, insn->imm); 11803cae1319SJakub Kicinski } else if (insn->imm == 32) { 11813cae1319SJakub Kicinski wrp_reg_mov(nfp_prog, dst + 1, dst); 11823cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), 0); 11833cae1319SJakub Kicinski } else if (insn->imm > 32) { 11843cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst + 1), 11853cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst), 11863cae1319SJakub Kicinski SHF_SC_L_SHF, insn->imm - 32); 11873cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), 0); 11883cae1319SJakub Kicinski } 1189d9ae7f2bSJakub Kicinski 1190d9ae7f2bSJakub Kicinski return 0; 1191d9ae7f2bSJakub Kicinski } 1192d9ae7f2bSJakub Kicinski 1193d9ae7f2bSJakub Kicinski static int shr_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1194d9ae7f2bSJakub Kicinski { 1195d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 11963cae1319SJakub Kicinski u8 dst = insn->dst_reg * 2; 1197d9ae7f2bSJakub Kicinski 11983cae1319SJakub Kicinski if (insn->imm < 32) { 11993cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst), 12003cae1319SJakub Kicinski reg_a(dst + 1), SHF_OP_NONE, reg_b(dst), 12013cae1319SJakub Kicinski SHF_SC_R_DSHF, insn->imm); 12023cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst + 1), 12033cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst + 1), 12043cae1319SJakub Kicinski SHF_SC_R_SHF, insn->imm); 12053cae1319SJakub Kicinski } else if (insn->imm == 32) { 12063cae1319SJakub Kicinski wrp_reg_mov(nfp_prog, dst, dst + 1); 12073cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst + 1), 0); 12083cae1319SJakub Kicinski } else if (insn->imm > 32) { 12093cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst), 12103cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst + 1), 12113cae1319SJakub Kicinski SHF_SC_R_SHF, insn->imm - 32); 12123cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst + 1), 0); 12133cae1319SJakub Kicinski } 1214d9ae7f2bSJakub Kicinski 1215d9ae7f2bSJakub Kicinski return 0; 1216d9ae7f2bSJakub Kicinski } 1217d9ae7f2bSJakub Kicinski 1218d9ae7f2bSJakub Kicinski static int mov_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1219d9ae7f2bSJakub Kicinski { 1220d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1221d9ae7f2bSJakub Kicinski 1222d9ae7f2bSJakub Kicinski wrp_reg_mov(nfp_prog, insn->dst_reg * 2, insn->src_reg * 2); 1223d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 1224d9ae7f2bSJakub Kicinski 1225d9ae7f2bSJakub Kicinski return 0; 1226d9ae7f2bSJakub Kicinski } 1227d9ae7f2bSJakub Kicinski 1228d9ae7f2bSJakub Kicinski static int mov_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1229d9ae7f2bSJakub Kicinski { 1230d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1231d9ae7f2bSJakub Kicinski 1232d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2), insn->imm); 1233d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 1234d9ae7f2bSJakub Kicinski 1235d9ae7f2bSJakub Kicinski return 0; 1236d9ae7f2bSJakub Kicinski } 1237d9ae7f2bSJakub Kicinski 1238d9ae7f2bSJakub Kicinski static int xor_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1239d9ae7f2bSJakub Kicinski { 1240d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_XOR); 1241d9ae7f2bSJakub Kicinski } 1242d9ae7f2bSJakub Kicinski 1243d9ae7f2bSJakub Kicinski static int xor_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1244d9ae7f2bSJakub Kicinski { 1245d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_XOR, !~meta->insn.imm); 1246d9ae7f2bSJakub Kicinski } 1247d9ae7f2bSJakub Kicinski 1248d9ae7f2bSJakub Kicinski static int and_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1249d9ae7f2bSJakub Kicinski { 1250d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_AND); 1251d9ae7f2bSJakub Kicinski } 1252d9ae7f2bSJakub Kicinski 1253d9ae7f2bSJakub Kicinski static int and_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1254d9ae7f2bSJakub Kicinski { 1255d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_AND, !~meta->insn.imm); 1256d9ae7f2bSJakub Kicinski } 1257d9ae7f2bSJakub Kicinski 1258d9ae7f2bSJakub Kicinski static int or_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1259d9ae7f2bSJakub Kicinski { 1260d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_OR); 1261d9ae7f2bSJakub Kicinski } 1262d9ae7f2bSJakub Kicinski 1263d9ae7f2bSJakub Kicinski static int or_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1264d9ae7f2bSJakub Kicinski { 1265d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_OR, !meta->insn.imm); 1266d9ae7f2bSJakub Kicinski } 1267d9ae7f2bSJakub Kicinski 1268d9ae7f2bSJakub Kicinski static int add_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1269d9ae7f2bSJakub Kicinski { 1270d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_ADD); 1271d9ae7f2bSJakub Kicinski } 1272d9ae7f2bSJakub Kicinski 1273d9ae7f2bSJakub Kicinski static int add_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1274d9ae7f2bSJakub Kicinski { 1275d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_ADD, !meta->insn.imm); 1276d9ae7f2bSJakub Kicinski } 1277d9ae7f2bSJakub Kicinski 1278d9ae7f2bSJakub Kicinski static int sub_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1279d9ae7f2bSJakub Kicinski { 1280d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_SUB); 1281d9ae7f2bSJakub Kicinski } 1282d9ae7f2bSJakub Kicinski 1283d9ae7f2bSJakub Kicinski static int sub_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1284d9ae7f2bSJakub Kicinski { 1285d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_SUB, !meta->insn.imm); 1286d9ae7f2bSJakub Kicinski } 1287d9ae7f2bSJakub Kicinski 1288254ef4d7SJiong Wang static int neg_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1289254ef4d7SJiong Wang { 1290254ef4d7SJiong Wang u8 dst = meta->insn.dst_reg * 2; 1291254ef4d7SJiong Wang 1292254ef4d7SJiong Wang emit_alu(nfp_prog, reg_both(dst), reg_imm(0), ALU_OP_SUB, reg_b(dst)); 1293254ef4d7SJiong Wang wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 1294254ef4d7SJiong Wang 1295254ef4d7SJiong Wang return 0; 1296254ef4d7SJiong Wang } 1297254ef4d7SJiong Wang 1298d9ae7f2bSJakub Kicinski static int shl_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1299d9ae7f2bSJakub Kicinski { 1300d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1301d9ae7f2bSJakub Kicinski 1302d9ae7f2bSJakub Kicinski if (!insn->imm) 1303d9ae7f2bSJakub Kicinski return 1; /* TODO: zero shift means indirect */ 1304d9ae7f2bSJakub Kicinski 1305d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_both(insn->dst_reg * 2), 1306d9ae7f2bSJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(insn->dst_reg * 2), 1307d9ae7f2bSJakub Kicinski SHF_SC_L_SHF, insn->imm); 1308d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 1309d9ae7f2bSJakub Kicinski 1310d9ae7f2bSJakub Kicinski return 0; 1311d9ae7f2bSJakub Kicinski } 1312d9ae7f2bSJakub Kicinski 13133119d1fdSJakub Kicinski static int end_reg32(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 13143119d1fdSJakub Kicinski { 13153119d1fdSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 13163119d1fdSJakub Kicinski u8 gpr = insn->dst_reg * 2; 13173119d1fdSJakub Kicinski 13183119d1fdSJakub Kicinski switch (insn->imm) { 13193119d1fdSJakub Kicinski case 16: 13203119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr), 0x9, reg_b(gpr), 13213119d1fdSJakub Kicinski SHF_SC_R_ROT, 8); 13223119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr), 0xe, reg_a(gpr), 13233119d1fdSJakub Kicinski SHF_SC_R_SHF, 16); 13243119d1fdSJakub Kicinski 13253119d1fdSJakub Kicinski wrp_immed(nfp_prog, reg_both(gpr + 1), 0); 13263119d1fdSJakub Kicinski break; 13273119d1fdSJakub Kicinski case 32: 13283119d1fdSJakub Kicinski wrp_end32(nfp_prog, reg_a(gpr), gpr); 13293119d1fdSJakub Kicinski wrp_immed(nfp_prog, reg_both(gpr + 1), 0); 13303119d1fdSJakub Kicinski break; 13313119d1fdSJakub Kicinski case 64: 13323119d1fdSJakub Kicinski wrp_mov(nfp_prog, imm_a(nfp_prog), reg_b(gpr + 1)); 13333119d1fdSJakub Kicinski 13343119d1fdSJakub Kicinski wrp_end32(nfp_prog, reg_a(gpr), gpr + 1); 13353119d1fdSJakub Kicinski wrp_end32(nfp_prog, imm_a(nfp_prog), gpr); 13363119d1fdSJakub Kicinski break; 13373119d1fdSJakub Kicinski } 13383119d1fdSJakub Kicinski 13393119d1fdSJakub Kicinski return 0; 13403119d1fdSJakub Kicinski } 13413119d1fdSJakub Kicinski 1342d9ae7f2bSJakub Kicinski static int imm_ld8_part2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1343d9ae7f2bSJakub Kicinski { 13449f16c8abSJakub Kicinski struct nfp_insn_meta *prev = nfp_meta_prev(meta); 13459f16c8abSJakub Kicinski u32 imm_lo, imm_hi; 13469f16c8abSJakub Kicinski u8 dst; 13479f16c8abSJakub Kicinski 13489f16c8abSJakub Kicinski dst = prev->insn.dst_reg * 2; 13499f16c8abSJakub Kicinski imm_lo = prev->insn.imm; 13509f16c8abSJakub Kicinski imm_hi = meta->insn.imm; 13519f16c8abSJakub Kicinski 13529f16c8abSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), imm_lo); 13539f16c8abSJakub Kicinski 13549f16c8abSJakub Kicinski /* mov is always 1 insn, load imm may be two, so try to use mov */ 13559f16c8abSJakub Kicinski if (imm_hi == imm_lo) 13569f16c8abSJakub Kicinski wrp_mov(nfp_prog, reg_both(dst + 1), reg_a(dst)); 13579f16c8abSJakub Kicinski else 13589f16c8abSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst + 1), imm_hi); 1359d9ae7f2bSJakub Kicinski 1360d9ae7f2bSJakub Kicinski return 0; 1361d9ae7f2bSJakub Kicinski } 1362d9ae7f2bSJakub Kicinski 1363d9ae7f2bSJakub Kicinski static int imm_ld8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1364d9ae7f2bSJakub Kicinski { 1365d9ae7f2bSJakub Kicinski meta->double_cb = imm_ld8_part2; 1366d9ae7f2bSJakub Kicinski return 0; 1367d9ae7f2bSJakub Kicinski } 1368d9ae7f2bSJakub Kicinski 1369d9ae7f2bSJakub Kicinski static int data_ld1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1370d9ae7f2bSJakub Kicinski { 1371d9ae7f2bSJakub Kicinski return construct_data_ld(nfp_prog, meta->insn.imm, 1); 1372d9ae7f2bSJakub Kicinski } 1373d9ae7f2bSJakub Kicinski 1374d9ae7f2bSJakub Kicinski static int data_ld2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1375d9ae7f2bSJakub Kicinski { 1376d9ae7f2bSJakub Kicinski return construct_data_ld(nfp_prog, meta->insn.imm, 2); 1377d9ae7f2bSJakub Kicinski } 1378d9ae7f2bSJakub Kicinski 1379d9ae7f2bSJakub Kicinski static int data_ld4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1380d9ae7f2bSJakub Kicinski { 1381d9ae7f2bSJakub Kicinski return construct_data_ld(nfp_prog, meta->insn.imm, 4); 1382d9ae7f2bSJakub Kicinski } 1383d9ae7f2bSJakub Kicinski 1384d9ae7f2bSJakub Kicinski static int data_ind_ld1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1385d9ae7f2bSJakub Kicinski { 1386d9ae7f2bSJakub Kicinski return construct_data_ind_ld(nfp_prog, meta->insn.imm, 13870a793977SJakub Kicinski meta->insn.src_reg * 2, 1); 1388d9ae7f2bSJakub Kicinski } 1389d9ae7f2bSJakub Kicinski 1390d9ae7f2bSJakub Kicinski static int data_ind_ld2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1391d9ae7f2bSJakub Kicinski { 1392d9ae7f2bSJakub Kicinski return construct_data_ind_ld(nfp_prog, meta->insn.imm, 13930a793977SJakub Kicinski meta->insn.src_reg * 2, 2); 1394d9ae7f2bSJakub Kicinski } 1395d9ae7f2bSJakub Kicinski 1396d9ae7f2bSJakub Kicinski static int data_ind_ld4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1397d9ae7f2bSJakub Kicinski { 1398d9ae7f2bSJakub Kicinski return construct_data_ind_ld(nfp_prog, meta->insn.imm, 13990a793977SJakub Kicinski meta->insn.src_reg * 2, 4); 1400d9ae7f2bSJakub Kicinski } 1401d9ae7f2bSJakub Kicinski 1402a82b23fbSJakub Kicinski static int 1403a82b23fbSJakub Kicinski mem_ldx_stack(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1404d3488480SJakub Kicinski unsigned int size, unsigned int ptr_off) 1405a82b23fbSJakub Kicinski { 1406d3488480SJakub Kicinski return mem_op_stack(nfp_prog, meta, size, ptr_off, 1407b14157eeSJakub Kicinski meta->insn.dst_reg * 2, meta->insn.src_reg * 2, 1408b14157eeSJakub Kicinski true, wrp_lmem_load); 1409a82b23fbSJakub Kicinski } 1410a82b23fbSJakub Kicinski 1411943c57b9SJakub Kicinski static int mem_ldx_skb(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1412943c57b9SJakub Kicinski u8 size) 1413d9ae7f2bSJakub Kicinski { 1414bfddbc8aSJakub Kicinski swreg dst = reg_both(meta->insn.dst_reg * 2); 1415bfddbc8aSJakub Kicinski 1416943c57b9SJakub Kicinski switch (meta->insn.off) { 1417c6c580d7SJakub Kicinski case offsetof(struct __sk_buff, len): 1418c6c580d7SJakub Kicinski if (size != FIELD_SIZEOF(struct __sk_buff, len)) 1419943c57b9SJakub Kicinski return -EOPNOTSUPP; 1420bfddbc8aSJakub Kicinski wrp_mov(nfp_prog, dst, plen_reg(nfp_prog)); 1421bfddbc8aSJakub Kicinski break; 1422c6c580d7SJakub Kicinski case offsetof(struct __sk_buff, data): 1423c6c580d7SJakub Kicinski if (size != FIELD_SIZEOF(struct __sk_buff, data)) 1424bfddbc8aSJakub Kicinski return -EOPNOTSUPP; 1425bfddbc8aSJakub Kicinski wrp_mov(nfp_prog, dst, pptr_reg(nfp_prog)); 1426bfddbc8aSJakub Kicinski break; 1427c6c580d7SJakub Kicinski case offsetof(struct __sk_buff, data_end): 1428c6c580d7SJakub Kicinski if (size != FIELD_SIZEOF(struct __sk_buff, data_end)) 1429bfddbc8aSJakub Kicinski return -EOPNOTSUPP; 1430bfddbc8aSJakub Kicinski emit_alu(nfp_prog, dst, 1431bfddbc8aSJakub Kicinski plen_reg(nfp_prog), ALU_OP_ADD, pptr_reg(nfp_prog)); 1432943c57b9SJakub Kicinski break; 1433943c57b9SJakub Kicinski default: 1434d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1435943c57b9SJakub Kicinski } 1436943c57b9SJakub Kicinski 1437943c57b9SJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 1438d9ae7f2bSJakub Kicinski 1439d9ae7f2bSJakub Kicinski return 0; 1440d9ae7f2bSJakub Kicinski } 1441d9ae7f2bSJakub Kicinski 1442943c57b9SJakub Kicinski static int mem_ldx_xdp(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1443943c57b9SJakub Kicinski u8 size) 1444d9ae7f2bSJakub Kicinski { 1445b3f868dfSJakub Kicinski swreg dst = reg_both(meta->insn.dst_reg * 2); 1446d9ae7f2bSJakub Kicinski 1447943c57b9SJakub Kicinski switch (meta->insn.off) { 1448c6c580d7SJakub Kicinski case offsetof(struct xdp_md, data): 1449c6c580d7SJakub Kicinski if (size != FIELD_SIZEOF(struct xdp_md, data)) 1450c6c580d7SJakub Kicinski return -EOPNOTSUPP; 1451c000dfb5SJakub Kicinski wrp_mov(nfp_prog, dst, pptr_reg(nfp_prog)); 1452943c57b9SJakub Kicinski break; 1453c6c580d7SJakub Kicinski case offsetof(struct xdp_md, data_end): 1454c6c580d7SJakub Kicinski if (size != FIELD_SIZEOF(struct xdp_md, data_end)) 1455c6c580d7SJakub Kicinski return -EOPNOTSUPP; 1456943c57b9SJakub Kicinski emit_alu(nfp_prog, dst, 1457943c57b9SJakub Kicinski plen_reg(nfp_prog), ALU_OP_ADD, pptr_reg(nfp_prog)); 1458943c57b9SJakub Kicinski break; 1459943c57b9SJakub Kicinski default: 1460943c57b9SJakub Kicinski return -EOPNOTSUPP; 1461943c57b9SJakub Kicinski } 1462d9ae7f2bSJakub Kicinski 1463943c57b9SJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 1464d9ae7f2bSJakub Kicinski 1465d9ae7f2bSJakub Kicinski return 0; 1466d9ae7f2bSJakub Kicinski } 1467d9ae7f2bSJakub Kicinski 14682ca71441SJakub Kicinski static int 14692ca71441SJakub Kicinski mem_ldx_data(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 14702ca71441SJakub Kicinski unsigned int size) 14712ca71441SJakub Kicinski { 14722ca71441SJakub Kicinski swreg tmp_reg; 14732ca71441SJakub Kicinski 14742ca71441SJakub Kicinski tmp_reg = re_load_imm_any(nfp_prog, meta->insn.off, imm_b(nfp_prog)); 14752ca71441SJakub Kicinski 14762ca71441SJakub Kicinski return data_ld_host_order(nfp_prog, meta->insn.src_reg * 2, tmp_reg, 14772ca71441SJakub Kicinski meta->insn.dst_reg * 2, size); 14782ca71441SJakub Kicinski } 14792ca71441SJakub Kicinski 14802ca71441SJakub Kicinski static int 14812ca71441SJakub Kicinski mem_ldx(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 14822ca71441SJakub Kicinski unsigned int size) 14832ca71441SJakub Kicinski { 14842ca71441SJakub Kicinski if (meta->ptr.type == PTR_TO_CTX) { 1485012bb8a8SJakub Kicinski if (nfp_prog->type == BPF_PROG_TYPE_XDP) 14862ca71441SJakub Kicinski return mem_ldx_xdp(nfp_prog, meta, size); 14872ca71441SJakub Kicinski else 14882ca71441SJakub Kicinski return mem_ldx_skb(nfp_prog, meta, size); 14892ca71441SJakub Kicinski } 14902ca71441SJakub Kicinski 14912ca71441SJakub Kicinski if (meta->ptr.type == PTR_TO_PACKET) 14922ca71441SJakub Kicinski return mem_ldx_data(nfp_prog, meta, size); 14932ca71441SJakub Kicinski 1494a82b23fbSJakub Kicinski if (meta->ptr.type == PTR_TO_STACK) 1495d3488480SJakub Kicinski return mem_ldx_stack(nfp_prog, meta, size, 1496d3488480SJakub Kicinski meta->ptr.off + meta->ptr.var_off.value); 1497a82b23fbSJakub Kicinski 14982ca71441SJakub Kicinski return -EOPNOTSUPP; 14992ca71441SJakub Kicinski } 15002ca71441SJakub Kicinski 15012ca71441SJakub Kicinski static int mem_ldx1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 15022ca71441SJakub Kicinski { 15032ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 1); 15042ca71441SJakub Kicinski } 15052ca71441SJakub Kicinski 15062ca71441SJakub Kicinski static int mem_ldx2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 15072ca71441SJakub Kicinski { 15082ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 2); 15092ca71441SJakub Kicinski } 15102ca71441SJakub Kicinski 1511d9ae7f2bSJakub Kicinski static int mem_ldx4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1512d9ae7f2bSJakub Kicinski { 15132ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 4); 15142ca71441SJakub Kicinski } 15152ca71441SJakub Kicinski 15162ca71441SJakub Kicinski static int mem_ldx8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 15172ca71441SJakub Kicinski { 15182ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 8); 1519d9ae7f2bSJakub Kicinski } 1520d9ae7f2bSJakub Kicinski 1521e663fe38SJakub Kicinski static int 1522e663fe38SJakub Kicinski mem_st_data(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1523e663fe38SJakub Kicinski unsigned int size) 1524d9ae7f2bSJakub Kicinski { 1525e663fe38SJakub Kicinski u64 imm = meta->insn.imm; /* sign extend */ 1526e663fe38SJakub Kicinski swreg off_reg; 1527e663fe38SJakub Kicinski 1528e663fe38SJakub Kicinski off_reg = re_load_imm_any(nfp_prog, meta->insn.off, imm_b(nfp_prog)); 1529e663fe38SJakub Kicinski 1530e663fe38SJakub Kicinski return data_st_host_order(nfp_prog, meta->insn.dst_reg * 2, off_reg, 1531e663fe38SJakub Kicinski imm, size); 1532e663fe38SJakub Kicinski } 1533e663fe38SJakub Kicinski 1534e663fe38SJakub Kicinski static int mem_st(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1535e663fe38SJakub Kicinski unsigned int size) 1536e663fe38SJakub Kicinski { 1537e663fe38SJakub Kicinski if (meta->ptr.type == PTR_TO_PACKET) 1538e663fe38SJakub Kicinski return mem_st_data(nfp_prog, meta, size); 1539e663fe38SJakub Kicinski 1540d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1541d9ae7f2bSJakub Kicinski } 1542d9ae7f2bSJakub Kicinski 1543e663fe38SJakub Kicinski static int mem_st1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1544d9ae7f2bSJakub Kicinski { 1545e663fe38SJakub Kicinski return mem_st(nfp_prog, meta, 1); 1546e663fe38SJakub Kicinski } 1547e663fe38SJakub Kicinski 1548e663fe38SJakub Kicinski static int mem_st2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1549e663fe38SJakub Kicinski { 1550e663fe38SJakub Kicinski return mem_st(nfp_prog, meta, 2); 1551e663fe38SJakub Kicinski } 1552e663fe38SJakub Kicinski 1553e663fe38SJakub Kicinski static int mem_st4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1554e663fe38SJakub Kicinski { 1555e663fe38SJakub Kicinski return mem_st(nfp_prog, meta, 4); 1556e663fe38SJakub Kicinski } 1557e663fe38SJakub Kicinski 1558e663fe38SJakub Kicinski static int mem_st8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1559e663fe38SJakub Kicinski { 1560e663fe38SJakub Kicinski return mem_st(nfp_prog, meta, 8); 1561e663fe38SJakub Kicinski } 1562e663fe38SJakub Kicinski 1563e663fe38SJakub Kicinski static int 1564e663fe38SJakub Kicinski mem_stx_data(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1565e663fe38SJakub Kicinski unsigned int size) 1566e663fe38SJakub Kicinski { 1567e663fe38SJakub Kicinski swreg off_reg; 1568e663fe38SJakub Kicinski 1569e663fe38SJakub Kicinski off_reg = re_load_imm_any(nfp_prog, meta->insn.off, imm_b(nfp_prog)); 1570e663fe38SJakub Kicinski 1571e663fe38SJakub Kicinski return data_stx_host_order(nfp_prog, meta->insn.dst_reg * 2, off_reg, 1572e663fe38SJakub Kicinski meta->insn.src_reg * 2, size); 1573e663fe38SJakub Kicinski } 1574e663fe38SJakub Kicinski 1575e663fe38SJakub Kicinski static int 1576ee9133a8SJakub Kicinski mem_stx_stack(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1577d3488480SJakub Kicinski unsigned int size, unsigned int ptr_off) 1578ee9133a8SJakub Kicinski { 1579d3488480SJakub Kicinski return mem_op_stack(nfp_prog, meta, size, ptr_off, 1580b14157eeSJakub Kicinski meta->insn.src_reg * 2, meta->insn.dst_reg * 2, 1581b14157eeSJakub Kicinski false, wrp_lmem_store); 1582ee9133a8SJakub Kicinski } 1583ee9133a8SJakub Kicinski 1584ee9133a8SJakub Kicinski static int 1585e663fe38SJakub Kicinski mem_stx(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1586e663fe38SJakub Kicinski unsigned int size) 1587e663fe38SJakub Kicinski { 1588e663fe38SJakub Kicinski if (meta->ptr.type == PTR_TO_PACKET) 1589e663fe38SJakub Kicinski return mem_stx_data(nfp_prog, meta, size); 1590e663fe38SJakub Kicinski 1591ee9133a8SJakub Kicinski if (meta->ptr.type == PTR_TO_STACK) 1592d3488480SJakub Kicinski return mem_stx_stack(nfp_prog, meta, size, 1593d3488480SJakub Kicinski meta->ptr.off + meta->ptr.var_off.value); 1594ee9133a8SJakub Kicinski 1595d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1596d9ae7f2bSJakub Kicinski } 1597d9ae7f2bSJakub Kicinski 1598e663fe38SJakub Kicinski static int mem_stx1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1599e663fe38SJakub Kicinski { 1600e663fe38SJakub Kicinski return mem_stx(nfp_prog, meta, 1); 1601e663fe38SJakub Kicinski } 1602e663fe38SJakub Kicinski 1603e663fe38SJakub Kicinski static int mem_stx2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1604e663fe38SJakub Kicinski { 1605e663fe38SJakub Kicinski return mem_stx(nfp_prog, meta, 2); 1606e663fe38SJakub Kicinski } 1607e663fe38SJakub Kicinski 1608d9ae7f2bSJakub Kicinski static int mem_stx4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1609d9ae7f2bSJakub Kicinski { 1610e663fe38SJakub Kicinski return mem_stx(nfp_prog, meta, 4); 1611e663fe38SJakub Kicinski } 16122ca71441SJakub Kicinski 1613e663fe38SJakub Kicinski static int mem_stx8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1614e663fe38SJakub Kicinski { 1615e663fe38SJakub Kicinski return mem_stx(nfp_prog, meta, 8); 1616d9ae7f2bSJakub Kicinski } 1617d9ae7f2bSJakub Kicinski 1618d9ae7f2bSJakub Kicinski static int jump(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1619d9ae7f2bSJakub Kicinski { 1620d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_UNC, meta->insn.off, 0); 1621d9ae7f2bSJakub Kicinski 1622d9ae7f2bSJakub Kicinski return 0; 1623d9ae7f2bSJakub Kicinski } 1624d9ae7f2bSJakub Kicinski 1625d9ae7f2bSJakub Kicinski static int jeq_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1626d9ae7f2bSJakub Kicinski { 1627d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1628d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1629b3f868dfSJakub Kicinski swreg or1, or2, tmp_reg; 1630b3f868dfSJakub Kicinski 1631b3f868dfSJakub Kicinski or1 = reg_a(insn->dst_reg * 2); 1632b3f868dfSJakub Kicinski or2 = reg_b(insn->dst_reg * 2 + 1); 1633d9ae7f2bSJakub Kicinski 1634d9ae7f2bSJakub Kicinski if (imm & ~0U) { 1635d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 1636d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_a(nfp_prog), 1637d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_XOR, tmp_reg); 1638d9ae7f2bSJakub Kicinski or1 = imm_a(nfp_prog); 1639d9ae7f2bSJakub Kicinski } 1640d9ae7f2bSJakub Kicinski 1641d9ae7f2bSJakub Kicinski if (imm >> 32) { 1642d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 1643d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), 1644d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_XOR, tmp_reg); 1645d9ae7f2bSJakub Kicinski or2 = imm_b(nfp_prog); 1646d9ae7f2bSJakub Kicinski } 1647d9ae7f2bSJakub Kicinski 1648d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), or1, ALU_OP_OR, or2); 1649d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BEQ, insn->off, 0); 1650d9ae7f2bSJakub Kicinski 1651d9ae7f2bSJakub Kicinski return 0; 1652d9ae7f2bSJakub Kicinski } 1653d9ae7f2bSJakub Kicinski 1654d9ae7f2bSJakub Kicinski static int jgt_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1655d9ae7f2bSJakub Kicinski { 165626fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BLO, true); 1657d9ae7f2bSJakub Kicinski } 1658d9ae7f2bSJakub Kicinski 1659d9ae7f2bSJakub Kicinski static int jge_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1660d9ae7f2bSJakub Kicinski { 166126fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BHS, false); 1662d9ae7f2bSJakub Kicinski } 1663d9ae7f2bSJakub Kicinski 16645dd294d4SDaniel Borkmann static int jlt_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 16655dd294d4SDaniel Borkmann { 166626fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BLO, false); 16675dd294d4SDaniel Borkmann } 16685dd294d4SDaniel Borkmann 16695dd294d4SDaniel Borkmann static int jle_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 16705dd294d4SDaniel Borkmann { 167126fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BHS, true); 16725dd294d4SDaniel Borkmann } 16735dd294d4SDaniel Borkmann 1674d9ae7f2bSJakub Kicinski static int jset_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1675d9ae7f2bSJakub Kicinski { 1676d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1677d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1678b3f868dfSJakub Kicinski swreg tmp_reg; 1679d9ae7f2bSJakub Kicinski 1680d9ae7f2bSJakub Kicinski if (!imm) { 1681d9ae7f2bSJakub Kicinski meta->skip = true; 1682d9ae7f2bSJakub Kicinski return 0; 1683d9ae7f2bSJakub Kicinski } 1684d9ae7f2bSJakub Kicinski 1685d9ae7f2bSJakub Kicinski if (imm & ~0U) { 1686d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 1687d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1688d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_AND, tmp_reg); 1689d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1690d9ae7f2bSJakub Kicinski } 1691d9ae7f2bSJakub Kicinski 1692d9ae7f2bSJakub Kicinski if (imm >> 32) { 1693d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 1694d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1695d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_AND, tmp_reg); 1696d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1697d9ae7f2bSJakub Kicinski } 1698d9ae7f2bSJakub Kicinski 1699d9ae7f2bSJakub Kicinski return 0; 1700d9ae7f2bSJakub Kicinski } 1701d9ae7f2bSJakub Kicinski 1702d9ae7f2bSJakub Kicinski static int jne_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1703d9ae7f2bSJakub Kicinski { 1704d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1705d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1706b3f868dfSJakub Kicinski swreg tmp_reg; 1707d9ae7f2bSJakub Kicinski 1708d9ae7f2bSJakub Kicinski if (!imm) { 1709d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(insn->dst_reg * 2), 1710d9ae7f2bSJakub Kicinski ALU_OP_OR, reg_b(insn->dst_reg * 2 + 1)); 1711d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 171282837370SJakub Kicinski return 0; 1713d9ae7f2bSJakub Kicinski } 1714d9ae7f2bSJakub Kicinski 1715d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 1716d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1717d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_XOR, tmp_reg); 1718d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1719d9ae7f2bSJakub Kicinski 1720d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 1721d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1722d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_XOR, tmp_reg); 1723d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1724d9ae7f2bSJakub Kicinski 1725d9ae7f2bSJakub Kicinski return 0; 1726d9ae7f2bSJakub Kicinski } 1727d9ae7f2bSJakub Kicinski 1728d9ae7f2bSJakub Kicinski static int jeq_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1729d9ae7f2bSJakub Kicinski { 1730d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1731d9ae7f2bSJakub Kicinski 1732d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_a(nfp_prog), reg_a(insn->dst_reg * 2), 1733d9ae7f2bSJakub Kicinski ALU_OP_XOR, reg_b(insn->src_reg * 2)); 1734d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), reg_a(insn->dst_reg * 2 + 1), 1735d9ae7f2bSJakub Kicinski ALU_OP_XOR, reg_b(insn->src_reg * 2 + 1)); 1736d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1737d9ae7f2bSJakub Kicinski imm_a(nfp_prog), ALU_OP_OR, imm_b(nfp_prog)); 1738d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BEQ, insn->off, 0); 1739d9ae7f2bSJakub Kicinski 1740d9ae7f2bSJakub Kicinski return 0; 1741d9ae7f2bSJakub Kicinski } 1742d9ae7f2bSJakub Kicinski 1743d9ae7f2bSJakub Kicinski static int jgt_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1744d9ae7f2bSJakub Kicinski { 174526fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BLO, true); 1746d9ae7f2bSJakub Kicinski } 1747d9ae7f2bSJakub Kicinski 1748d9ae7f2bSJakub Kicinski static int jge_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1749d9ae7f2bSJakub Kicinski { 175026fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BHS, false); 1751d9ae7f2bSJakub Kicinski } 1752d9ae7f2bSJakub Kicinski 17535dd294d4SDaniel Borkmann static int jlt_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 17545dd294d4SDaniel Borkmann { 175526fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BLO, false); 17565dd294d4SDaniel Borkmann } 17575dd294d4SDaniel Borkmann 17585dd294d4SDaniel Borkmann static int jle_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 17595dd294d4SDaniel Borkmann { 176026fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BHS, true); 17615dd294d4SDaniel Borkmann } 17625dd294d4SDaniel Borkmann 1763d9ae7f2bSJakub Kicinski static int jset_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1764d9ae7f2bSJakub Kicinski { 1765d9ae7f2bSJakub Kicinski return wrp_test_reg(nfp_prog, meta, ALU_OP_AND, BR_BNE); 1766d9ae7f2bSJakub Kicinski } 1767d9ae7f2bSJakub Kicinski 1768d9ae7f2bSJakub Kicinski static int jne_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1769d9ae7f2bSJakub Kicinski { 1770d9ae7f2bSJakub Kicinski return wrp_test_reg(nfp_prog, meta, ALU_OP_XOR, BR_BNE); 1771d9ae7f2bSJakub Kicinski } 1772d9ae7f2bSJakub Kicinski 1773d9ae7f2bSJakub Kicinski static int goto_out(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1774d9ae7f2bSJakub Kicinski { 1775d9ae7f2bSJakub Kicinski wrp_br_special(nfp_prog, BR_UNC, OP_BR_GO_OUT); 1776d9ae7f2bSJakub Kicinski 1777d9ae7f2bSJakub Kicinski return 0; 1778d9ae7f2bSJakub Kicinski } 1779d9ae7f2bSJakub Kicinski 1780d9ae7f2bSJakub Kicinski static const instr_cb_t instr_cb[256] = { 1781d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_MOV | BPF_X] = mov_reg64, 1782d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_MOV | BPF_K] = mov_imm64, 1783d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_XOR | BPF_X] = xor_reg64, 1784d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_XOR | BPF_K] = xor_imm64, 1785d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_AND | BPF_X] = and_reg64, 1786d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_AND | BPF_K] = and_imm64, 1787d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_OR | BPF_X] = or_reg64, 1788d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_OR | BPF_K] = or_imm64, 1789d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_ADD | BPF_X] = add_reg64, 1790d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_ADD | BPF_K] = add_imm64, 1791d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_SUB | BPF_X] = sub_reg64, 1792d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_SUB | BPF_K] = sub_imm64, 1793254ef4d7SJiong Wang [BPF_ALU64 | BPF_NEG] = neg_reg64, 1794d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_LSH | BPF_K] = shl_imm64, 1795d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_RSH | BPF_K] = shr_imm64, 1796d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_MOV | BPF_X] = mov_reg, 1797d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_MOV | BPF_K] = mov_imm, 1798d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_XOR | BPF_X] = xor_reg, 1799d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_XOR | BPF_K] = xor_imm, 1800d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_AND | BPF_X] = and_reg, 1801d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_AND | BPF_K] = and_imm, 1802d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_OR | BPF_X] = or_reg, 1803d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_OR | BPF_K] = or_imm, 1804d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_ADD | BPF_X] = add_reg, 1805d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_ADD | BPF_K] = add_imm, 1806d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_SUB | BPF_X] = sub_reg, 1807d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_SUB | BPF_K] = sub_imm, 1808254ef4d7SJiong Wang [BPF_ALU | BPF_NEG] = neg_reg, 1809d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_LSH | BPF_K] = shl_imm, 18103119d1fdSJakub Kicinski [BPF_ALU | BPF_END | BPF_X] = end_reg32, 1811d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IMM | BPF_DW] = imm_ld8, 1812d9ae7f2bSJakub Kicinski [BPF_LD | BPF_ABS | BPF_B] = data_ld1, 1813d9ae7f2bSJakub Kicinski [BPF_LD | BPF_ABS | BPF_H] = data_ld2, 1814d9ae7f2bSJakub Kicinski [BPF_LD | BPF_ABS | BPF_W] = data_ld4, 1815d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IND | BPF_B] = data_ind_ld1, 1816d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IND | BPF_H] = data_ind_ld2, 1817d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IND | BPF_W] = data_ind_ld4, 18182ca71441SJakub Kicinski [BPF_LDX | BPF_MEM | BPF_B] = mem_ldx1, 18192ca71441SJakub Kicinski [BPF_LDX | BPF_MEM | BPF_H] = mem_ldx2, 1820d9ae7f2bSJakub Kicinski [BPF_LDX | BPF_MEM | BPF_W] = mem_ldx4, 18212ca71441SJakub Kicinski [BPF_LDX | BPF_MEM | BPF_DW] = mem_ldx8, 1822e663fe38SJakub Kicinski [BPF_STX | BPF_MEM | BPF_B] = mem_stx1, 1823e663fe38SJakub Kicinski [BPF_STX | BPF_MEM | BPF_H] = mem_stx2, 1824d9ae7f2bSJakub Kicinski [BPF_STX | BPF_MEM | BPF_W] = mem_stx4, 1825e663fe38SJakub Kicinski [BPF_STX | BPF_MEM | BPF_DW] = mem_stx8, 1826e663fe38SJakub Kicinski [BPF_ST | BPF_MEM | BPF_B] = mem_st1, 1827e663fe38SJakub Kicinski [BPF_ST | BPF_MEM | BPF_H] = mem_st2, 1828e663fe38SJakub Kicinski [BPF_ST | BPF_MEM | BPF_W] = mem_st4, 1829e663fe38SJakub Kicinski [BPF_ST | BPF_MEM | BPF_DW] = mem_st8, 1830d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JA | BPF_K] = jump, 1831d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JEQ | BPF_K] = jeq_imm, 1832d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGT | BPF_K] = jgt_imm, 1833d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGE | BPF_K] = jge_imm, 18345dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLT | BPF_K] = jlt_imm, 18355dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLE | BPF_K] = jle_imm, 1836d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JSET | BPF_K] = jset_imm, 1837d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JNE | BPF_K] = jne_imm, 1838d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JEQ | BPF_X] = jeq_reg, 1839d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGT | BPF_X] = jgt_reg, 1840d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGE | BPF_X] = jge_reg, 18415dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLT | BPF_X] = jlt_reg, 18425dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLE | BPF_X] = jle_reg, 1843d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JSET | BPF_X] = jset_reg, 1844d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JNE | BPF_X] = jne_reg, 1845d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_EXIT] = goto_out, 1846d9ae7f2bSJakub Kicinski }; 1847d9ae7f2bSJakub Kicinski 1848d9ae7f2bSJakub Kicinski /* --- Misc code --- */ 1849d9ae7f2bSJakub Kicinski static void br_set_offset(u64 *instr, u16 offset) 1850d9ae7f2bSJakub Kicinski { 1851d9ae7f2bSJakub Kicinski u16 addr_lo, addr_hi; 1852d9ae7f2bSJakub Kicinski 1853d9ae7f2bSJakub Kicinski addr_lo = offset & (OP_BR_ADDR_LO >> __bf_shf(OP_BR_ADDR_LO)); 1854d9ae7f2bSJakub Kicinski addr_hi = offset != addr_lo; 1855d9ae7f2bSJakub Kicinski *instr &= ~(OP_BR_ADDR_HI | OP_BR_ADDR_LO); 1856d9ae7f2bSJakub Kicinski *instr |= FIELD_PREP(OP_BR_ADDR_HI, addr_hi); 1857d9ae7f2bSJakub Kicinski *instr |= FIELD_PREP(OP_BR_ADDR_LO, addr_lo); 1858d9ae7f2bSJakub Kicinski } 1859d9ae7f2bSJakub Kicinski 1860d9ae7f2bSJakub Kicinski /* --- Assembler logic --- */ 1861d9ae7f2bSJakub Kicinski static int nfp_fixup_branches(struct nfp_prog *nfp_prog) 1862d9ae7f2bSJakub Kicinski { 18635b674140SJiong Wang struct nfp_insn_meta *meta, *jmp_dst; 1864854dc87dSJiong Wang u32 idx, br_idx; 1865d9ae7f2bSJakub Kicinski 1866854dc87dSJiong Wang list_for_each_entry(meta, &nfp_prog->insns, l) { 1867d9ae7f2bSJakub Kicinski if (meta->skip) 1868d9ae7f2bSJakub Kicinski continue; 1869d9ae7f2bSJakub Kicinski if (BPF_CLASS(meta->insn.code) != BPF_JMP) 1870d9ae7f2bSJakub Kicinski continue; 1871d9ae7f2bSJakub Kicinski 18725b674140SJiong Wang if (list_is_last(&meta->l, &nfp_prog->insns)) 1873854dc87dSJiong Wang idx = nfp_prog->last_bpf_off; 18745b674140SJiong Wang else 18755b674140SJiong Wang idx = list_next_entry(meta, l)->off - 1; 1876854dc87dSJiong Wang 1877854dc87dSJiong Wang br_idx = nfp_prog_offset_to_index(nfp_prog, idx); 1878854dc87dSJiong Wang 1879d9ae7f2bSJakub Kicinski if (!nfp_is_br(nfp_prog->prog[br_idx])) { 1880d9ae7f2bSJakub Kicinski pr_err("Fixup found block not ending in branch %d %02x %016llx!!\n", 1881d9ae7f2bSJakub Kicinski br_idx, meta->insn.code, nfp_prog->prog[br_idx]); 1882d9ae7f2bSJakub Kicinski return -ELOOP; 1883d9ae7f2bSJakub Kicinski } 1884d9ae7f2bSJakub Kicinski /* Leave special branches for later */ 1885d9ae7f2bSJakub Kicinski if (FIELD_GET(OP_BR_SPECIAL, nfp_prog->prog[br_idx])) 1886d9ae7f2bSJakub Kicinski continue; 1887d9ae7f2bSJakub Kicinski 18885b674140SJiong Wang if (!meta->jmp_dst) { 18895b674140SJiong Wang pr_err("Non-exit jump doesn't have destination info recorded!!\n"); 1890d9ae7f2bSJakub Kicinski return -ELOOP; 1891d9ae7f2bSJakub Kicinski } 1892d9ae7f2bSJakub Kicinski 18935b674140SJiong Wang jmp_dst = meta->jmp_dst; 1894854dc87dSJiong Wang 18955b674140SJiong Wang if (jmp_dst->skip) { 1896d9ae7f2bSJakub Kicinski pr_err("Branch landing on removed instruction!!\n"); 1897d9ae7f2bSJakub Kicinski return -ELOOP; 1898d9ae7f2bSJakub Kicinski } 1899d9ae7f2bSJakub Kicinski 1900d9ae7f2bSJakub Kicinski for (idx = nfp_prog_offset_to_index(nfp_prog, meta->off); 1901d9ae7f2bSJakub Kicinski idx <= br_idx; idx++) { 1902d9ae7f2bSJakub Kicinski if (!nfp_is_br(nfp_prog->prog[idx])) 1903d9ae7f2bSJakub Kicinski continue; 19045b674140SJiong Wang br_set_offset(&nfp_prog->prog[idx], jmp_dst->off); 1905d9ae7f2bSJakub Kicinski } 1906d9ae7f2bSJakub Kicinski } 1907d9ae7f2bSJakub Kicinski 1908d9ae7f2bSJakub Kicinski /* Fixup 'goto out's separately, they can be scattered around */ 1909d9ae7f2bSJakub Kicinski for (br_idx = 0; br_idx < nfp_prog->prog_len; br_idx++) { 1910d9ae7f2bSJakub Kicinski enum br_special special; 1911d9ae7f2bSJakub Kicinski 1912d9ae7f2bSJakub Kicinski if ((nfp_prog->prog[br_idx] & OP_BR_BASE_MASK) != OP_BR_BASE) 1913d9ae7f2bSJakub Kicinski continue; 1914d9ae7f2bSJakub Kicinski 1915d9ae7f2bSJakub Kicinski special = FIELD_GET(OP_BR_SPECIAL, nfp_prog->prog[br_idx]); 1916d9ae7f2bSJakub Kicinski switch (special) { 1917d9ae7f2bSJakub Kicinski case OP_BR_NORMAL: 1918d9ae7f2bSJakub Kicinski break; 1919d9ae7f2bSJakub Kicinski case OP_BR_GO_OUT: 1920d9ae7f2bSJakub Kicinski br_set_offset(&nfp_prog->prog[br_idx], 1921d9ae7f2bSJakub Kicinski nfp_prog->tgt_out); 1922d9ae7f2bSJakub Kicinski break; 1923d9ae7f2bSJakub Kicinski case OP_BR_GO_ABORT: 1924d9ae7f2bSJakub Kicinski br_set_offset(&nfp_prog->prog[br_idx], 1925d9ae7f2bSJakub Kicinski nfp_prog->tgt_abort); 1926d9ae7f2bSJakub Kicinski break; 1927d9ae7f2bSJakub Kicinski } 1928d9ae7f2bSJakub Kicinski 1929d9ae7f2bSJakub Kicinski nfp_prog->prog[br_idx] &= ~OP_BR_SPECIAL; 1930d9ae7f2bSJakub Kicinski } 1931d9ae7f2bSJakub Kicinski 1932d9ae7f2bSJakub Kicinski return 0; 1933d9ae7f2bSJakub Kicinski } 1934d9ae7f2bSJakub Kicinski 1935d9ae7f2bSJakub Kicinski static void nfp_intro(struct nfp_prog *nfp_prog) 1936d9ae7f2bSJakub Kicinski { 193718e53b6cSJakub Kicinski wrp_immed(nfp_prog, plen_reg(nfp_prog), GENMASK(13, 0)); 193818e53b6cSJakub Kicinski emit_alu(nfp_prog, plen_reg(nfp_prog), 193918e53b6cSJakub Kicinski plen_reg(nfp_prog), ALU_OP_AND, pv_len(nfp_prog)); 1940d9ae7f2bSJakub Kicinski } 1941d9ae7f2bSJakub Kicinski 1942d9ae7f2bSJakub Kicinski static void nfp_outro_tc_da(struct nfp_prog *nfp_prog) 1943d9ae7f2bSJakub Kicinski { 1944d9ae7f2bSJakub Kicinski /* TC direct-action mode: 1945d9ae7f2bSJakub Kicinski * 0,1 ok NOT SUPPORTED[1] 1946d9ae7f2bSJakub Kicinski * 2 drop 0x22 -> drop, count as stat1 1947d9ae7f2bSJakub Kicinski * 4,5 nuke 0x02 -> drop 1948d9ae7f2bSJakub Kicinski * 7 redir 0x44 -> redir, count as stat2 1949d9ae7f2bSJakub Kicinski * * unspec 0x11 -> pass, count as stat0 1950d9ae7f2bSJakub Kicinski * 1951d9ae7f2bSJakub Kicinski * [1] We can't support OK and RECLASSIFY because we can't tell TC 1952d9ae7f2bSJakub Kicinski * the exact decision made. We are forced to support UNSPEC 1953d9ae7f2bSJakub Kicinski * to handle aborts so that's the only one we handle for passing 1954d9ae7f2bSJakub Kicinski * packets up the stack. 1955d9ae7f2bSJakub Kicinski */ 1956d9ae7f2bSJakub Kicinski /* Target for aborts */ 1957d9ae7f2bSJakub Kicinski nfp_prog->tgt_abort = nfp_prog_current_offset(nfp_prog); 1958d9ae7f2bSJakub Kicinski 1959d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 1960d9ae7f2bSJakub Kicinski 1961c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 1962d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_imm(0x11), SHF_SC_L_SHF, 16); 1963d9ae7f2bSJakub Kicinski 1964d9ae7f2bSJakub Kicinski /* Target for normal exits */ 1965d9ae7f2bSJakub Kicinski nfp_prog->tgt_out = nfp_prog_current_offset(nfp_prog); 1966d9ae7f2bSJakub Kicinski 1967d9ae7f2bSJakub Kicinski /* if R0 > 7 jump to abort */ 1968d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_imm(7), ALU_OP_SUB, reg_b(0)); 1969d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BLO, nfp_prog->tgt_abort, 0); 1970c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 1971d9ae7f2bSJakub Kicinski 1972d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_b(2), 0x41221211); 1973d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_b(3), 0x41001211); 1974d9ae7f2bSJakub Kicinski 1975d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_a(1), 1976d9ae7f2bSJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(0), SHF_SC_L_SHF, 2); 1977d9ae7f2bSJakub Kicinski 1978d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(1), ALU_OP_OR, reg_imm(0)); 1979d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_a(2), 1980d9ae7f2bSJakub Kicinski reg_imm(0xf), SHF_OP_AND, reg_b(2), SHF_SC_R_SHF, 0); 1981d9ae7f2bSJakub Kicinski 1982d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(1), ALU_OP_OR, reg_imm(0)); 1983d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_b(2), 1984d9ae7f2bSJakub Kicinski reg_imm(0xf), SHF_OP_AND, reg_b(3), SHF_SC_R_SHF, 0); 1985d9ae7f2bSJakub Kicinski 1986d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 1987d9ae7f2bSJakub Kicinski 1988d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_b(2), 1989d9ae7f2bSJakub Kicinski reg_a(2), SHF_OP_OR, reg_b(2), SHF_SC_L_SHF, 4); 1990d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_b(2), SHF_SC_L_SHF, 16); 1991d9ae7f2bSJakub Kicinski } 1992d9ae7f2bSJakub Kicinski 1993d9ae7f2bSJakub Kicinski static void nfp_outro_xdp(struct nfp_prog *nfp_prog) 1994d9ae7f2bSJakub Kicinski { 1995d9ae7f2bSJakub Kicinski /* XDP return codes: 1996d9ae7f2bSJakub Kicinski * 0 aborted 0x82 -> drop, count as stat3 1997d9ae7f2bSJakub Kicinski * 1 drop 0x22 -> drop, count as stat1 1998d9ae7f2bSJakub Kicinski * 2 pass 0x11 -> pass, count as stat0 1999d9ae7f2bSJakub Kicinski * 3 tx 0x44 -> redir, count as stat2 2000d9ae7f2bSJakub Kicinski * * unknown 0x82 -> drop, count as stat3 2001d9ae7f2bSJakub Kicinski */ 2002d9ae7f2bSJakub Kicinski /* Target for aborts */ 2003d9ae7f2bSJakub Kicinski nfp_prog->tgt_abort = nfp_prog_current_offset(nfp_prog); 2004d9ae7f2bSJakub Kicinski 2005d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 2006d9ae7f2bSJakub Kicinski 2007c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 2008d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_imm(0x82), SHF_SC_L_SHF, 16); 2009d9ae7f2bSJakub Kicinski 2010d9ae7f2bSJakub Kicinski /* Target for normal exits */ 2011d9ae7f2bSJakub Kicinski nfp_prog->tgt_out = nfp_prog_current_offset(nfp_prog); 2012d9ae7f2bSJakub Kicinski 2013d9ae7f2bSJakub Kicinski /* if R0 > 3 jump to abort */ 2014d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_imm(3), ALU_OP_SUB, reg_b(0)); 2015d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BLO, nfp_prog->tgt_abort, 0); 2016d9ae7f2bSJakub Kicinski 2017d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_b(2), 0x44112282); 2018d9ae7f2bSJakub Kicinski 2019d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_a(1), 2020d9ae7f2bSJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(0), SHF_SC_L_SHF, 3); 2021d9ae7f2bSJakub Kicinski 2022d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(1), ALU_OP_OR, reg_imm(0)); 2023d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_b(2), 2024d9ae7f2bSJakub Kicinski reg_imm(0xff), SHF_OP_AND, reg_b(2), SHF_SC_R_SHF, 0); 2025d9ae7f2bSJakub Kicinski 2026d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 2027d9ae7f2bSJakub Kicinski 2028c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 2029d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_b(2), SHF_SC_L_SHF, 16); 2030d9ae7f2bSJakub Kicinski } 2031d9ae7f2bSJakub Kicinski 2032d9ae7f2bSJakub Kicinski static void nfp_outro(struct nfp_prog *nfp_prog) 2033d9ae7f2bSJakub Kicinski { 2034012bb8a8SJakub Kicinski switch (nfp_prog->type) { 2035012bb8a8SJakub Kicinski case BPF_PROG_TYPE_SCHED_CLS: 2036d9ae7f2bSJakub Kicinski nfp_outro_tc_da(nfp_prog); 2037d9ae7f2bSJakub Kicinski break; 2038012bb8a8SJakub Kicinski case BPF_PROG_TYPE_XDP: 2039d9ae7f2bSJakub Kicinski nfp_outro_xdp(nfp_prog); 2040d9ae7f2bSJakub Kicinski break; 2041012bb8a8SJakub Kicinski default: 2042012bb8a8SJakub Kicinski WARN_ON(1); 2043d9ae7f2bSJakub Kicinski } 2044d9ae7f2bSJakub Kicinski } 2045d9ae7f2bSJakub Kicinski 2046d9ae7f2bSJakub Kicinski static int nfp_translate(struct nfp_prog *nfp_prog) 2047d9ae7f2bSJakub Kicinski { 2048d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta; 2049ff42bb9fSJakub Kicinski int err; 2050d9ae7f2bSJakub Kicinski 2051d9ae7f2bSJakub Kicinski nfp_intro(nfp_prog); 2052d9ae7f2bSJakub Kicinski if (nfp_prog->error) 2053d9ae7f2bSJakub Kicinski return nfp_prog->error; 2054d9ae7f2bSJakub Kicinski 2055d9ae7f2bSJakub Kicinski list_for_each_entry(meta, &nfp_prog->insns, l) { 2056d9ae7f2bSJakub Kicinski instr_cb_t cb = instr_cb[meta->insn.code]; 2057d9ae7f2bSJakub Kicinski 2058d9ae7f2bSJakub Kicinski meta->off = nfp_prog_current_offset(nfp_prog); 2059d9ae7f2bSJakub Kicinski 2060d9ae7f2bSJakub Kicinski if (meta->skip) { 2061d9ae7f2bSJakub Kicinski nfp_prog->n_translated++; 2062d9ae7f2bSJakub Kicinski continue; 2063d9ae7f2bSJakub Kicinski } 2064d9ae7f2bSJakub Kicinski 2065d9ae7f2bSJakub Kicinski if (nfp_meta_has_prev(nfp_prog, meta) && 2066d9ae7f2bSJakub Kicinski nfp_meta_prev(meta)->double_cb) 2067d9ae7f2bSJakub Kicinski cb = nfp_meta_prev(meta)->double_cb; 2068d9ae7f2bSJakub Kicinski if (!cb) 2069d9ae7f2bSJakub Kicinski return -ENOENT; 2070d9ae7f2bSJakub Kicinski err = cb(nfp_prog, meta); 2071d9ae7f2bSJakub Kicinski if (err) 2072d9ae7f2bSJakub Kicinski return err; 2073d9ae7f2bSJakub Kicinski 2074d9ae7f2bSJakub Kicinski nfp_prog->n_translated++; 2075d9ae7f2bSJakub Kicinski } 2076d9ae7f2bSJakub Kicinski 2077854dc87dSJiong Wang nfp_prog->last_bpf_off = nfp_prog_current_offset(nfp_prog) - 1; 2078854dc87dSJiong Wang 2079d9ae7f2bSJakub Kicinski nfp_outro(nfp_prog); 2080d9ae7f2bSJakub Kicinski if (nfp_prog->error) 2081d9ae7f2bSJakub Kicinski return nfp_prog->error; 2082d9ae7f2bSJakub Kicinski 2083ff42bb9fSJakub Kicinski wrp_nops(nfp_prog, NFP_USTORE_PREFETCH_WINDOW); 20841c03e03fSJakub Kicinski if (nfp_prog->error) 20851c03e03fSJakub Kicinski return nfp_prog->error; 20861c03e03fSJakub Kicinski 2087d9ae7f2bSJakub Kicinski return nfp_fixup_branches(nfp_prog); 2088d9ae7f2bSJakub Kicinski } 2089d9ae7f2bSJakub Kicinski 2090d9ae7f2bSJakub Kicinski /* --- Optimizations --- */ 2091d9ae7f2bSJakub Kicinski static void nfp_bpf_opt_reg_init(struct nfp_prog *nfp_prog) 2092d9ae7f2bSJakub Kicinski { 2093d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta; 2094d9ae7f2bSJakub Kicinski 2095d9ae7f2bSJakub Kicinski list_for_each_entry(meta, &nfp_prog->insns, l) { 2096d9ae7f2bSJakub Kicinski struct bpf_insn insn = meta->insn; 2097d9ae7f2bSJakub Kicinski 2098d9ae7f2bSJakub Kicinski /* Programs converted from cBPF start with register xoring */ 2099d9ae7f2bSJakub Kicinski if (insn.code == (BPF_ALU64 | BPF_XOR | BPF_X) && 2100d9ae7f2bSJakub Kicinski insn.src_reg == insn.dst_reg) 2101d9ae7f2bSJakub Kicinski continue; 2102d9ae7f2bSJakub Kicinski 2103d9ae7f2bSJakub Kicinski /* Programs start with R6 = R1 but we ignore the skb pointer */ 2104d9ae7f2bSJakub Kicinski if (insn.code == (BPF_ALU64 | BPF_MOV | BPF_X) && 2105d9ae7f2bSJakub Kicinski insn.src_reg == 1 && insn.dst_reg == 6) 2106d9ae7f2bSJakub Kicinski meta->skip = true; 2107d9ae7f2bSJakub Kicinski 2108d9ae7f2bSJakub Kicinski /* Return as soon as something doesn't match */ 2109d9ae7f2bSJakub Kicinski if (!meta->skip) 2110d9ae7f2bSJakub Kicinski return; 2111d9ae7f2bSJakub Kicinski } 2112d9ae7f2bSJakub Kicinski } 2113d9ae7f2bSJakub Kicinski 2114d9ae7f2bSJakub Kicinski /* Remove masking after load since our load guarantees this is not needed */ 2115d9ae7f2bSJakub Kicinski static void nfp_bpf_opt_ld_mask(struct nfp_prog *nfp_prog) 2116d9ae7f2bSJakub Kicinski { 2117d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta1, *meta2; 2118d9ae7f2bSJakub Kicinski const s32 exp_mask[] = { 2119d9ae7f2bSJakub Kicinski [BPF_B] = 0x000000ffU, 2120d9ae7f2bSJakub Kicinski [BPF_H] = 0x0000ffffU, 2121d9ae7f2bSJakub Kicinski [BPF_W] = 0xffffffffU, 2122d9ae7f2bSJakub Kicinski }; 2123d9ae7f2bSJakub Kicinski 2124d9ae7f2bSJakub Kicinski nfp_for_each_insn_walk2(nfp_prog, meta1, meta2) { 2125d9ae7f2bSJakub Kicinski struct bpf_insn insn, next; 2126d9ae7f2bSJakub Kicinski 2127d9ae7f2bSJakub Kicinski insn = meta1->insn; 2128d9ae7f2bSJakub Kicinski next = meta2->insn; 2129d9ae7f2bSJakub Kicinski 2130d9ae7f2bSJakub Kicinski if (BPF_CLASS(insn.code) != BPF_LD) 2131d9ae7f2bSJakub Kicinski continue; 2132d9ae7f2bSJakub Kicinski if (BPF_MODE(insn.code) != BPF_ABS && 2133d9ae7f2bSJakub Kicinski BPF_MODE(insn.code) != BPF_IND) 2134d9ae7f2bSJakub Kicinski continue; 2135d9ae7f2bSJakub Kicinski 2136d9ae7f2bSJakub Kicinski if (next.code != (BPF_ALU64 | BPF_AND | BPF_K)) 2137d9ae7f2bSJakub Kicinski continue; 2138d9ae7f2bSJakub Kicinski 2139d9ae7f2bSJakub Kicinski if (!exp_mask[BPF_SIZE(insn.code)]) 2140d9ae7f2bSJakub Kicinski continue; 2141d9ae7f2bSJakub Kicinski if (exp_mask[BPF_SIZE(insn.code)] != next.imm) 2142d9ae7f2bSJakub Kicinski continue; 2143d9ae7f2bSJakub Kicinski 2144d9ae7f2bSJakub Kicinski if (next.src_reg || next.dst_reg) 2145d9ae7f2bSJakub Kicinski continue; 2146d9ae7f2bSJakub Kicinski 21471266f5d6SJiong Wang if (meta2->flags & FLAG_INSN_IS_JUMP_DST) 21481266f5d6SJiong Wang continue; 21491266f5d6SJiong Wang 2150d9ae7f2bSJakub Kicinski meta2->skip = true; 2151d9ae7f2bSJakub Kicinski } 2152d9ae7f2bSJakub Kicinski } 2153d9ae7f2bSJakub Kicinski 2154d9ae7f2bSJakub Kicinski static void nfp_bpf_opt_ld_shift(struct nfp_prog *nfp_prog) 2155d9ae7f2bSJakub Kicinski { 2156d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta1, *meta2, *meta3; 2157d9ae7f2bSJakub Kicinski 2158d9ae7f2bSJakub Kicinski nfp_for_each_insn_walk3(nfp_prog, meta1, meta2, meta3) { 2159d9ae7f2bSJakub Kicinski struct bpf_insn insn, next1, next2; 2160d9ae7f2bSJakub Kicinski 2161d9ae7f2bSJakub Kicinski insn = meta1->insn; 2162d9ae7f2bSJakub Kicinski next1 = meta2->insn; 2163d9ae7f2bSJakub Kicinski next2 = meta3->insn; 2164d9ae7f2bSJakub Kicinski 2165d9ae7f2bSJakub Kicinski if (BPF_CLASS(insn.code) != BPF_LD) 2166d9ae7f2bSJakub Kicinski continue; 2167d9ae7f2bSJakub Kicinski if (BPF_MODE(insn.code) != BPF_ABS && 2168d9ae7f2bSJakub Kicinski BPF_MODE(insn.code) != BPF_IND) 2169d9ae7f2bSJakub Kicinski continue; 2170d9ae7f2bSJakub Kicinski if (BPF_SIZE(insn.code) != BPF_W) 2171d9ae7f2bSJakub Kicinski continue; 2172d9ae7f2bSJakub Kicinski 2173d9ae7f2bSJakub Kicinski if (!(next1.code == (BPF_LSH | BPF_K | BPF_ALU64) && 2174d9ae7f2bSJakub Kicinski next2.code == (BPF_RSH | BPF_K | BPF_ALU64)) && 2175d9ae7f2bSJakub Kicinski !(next1.code == (BPF_RSH | BPF_K | BPF_ALU64) && 2176d9ae7f2bSJakub Kicinski next2.code == (BPF_LSH | BPF_K | BPF_ALU64))) 2177d9ae7f2bSJakub Kicinski continue; 2178d9ae7f2bSJakub Kicinski 2179d9ae7f2bSJakub Kicinski if (next1.src_reg || next1.dst_reg || 2180d9ae7f2bSJakub Kicinski next2.src_reg || next2.dst_reg) 2181d9ae7f2bSJakub Kicinski continue; 2182d9ae7f2bSJakub Kicinski 2183d9ae7f2bSJakub Kicinski if (next1.imm != 0x20 || next2.imm != 0x20) 2184d9ae7f2bSJakub Kicinski continue; 2185d9ae7f2bSJakub Kicinski 218629fe46efSJiong Wang if (meta2->flags & FLAG_INSN_IS_JUMP_DST || 218729fe46efSJiong Wang meta3->flags & FLAG_INSN_IS_JUMP_DST) 218829fe46efSJiong Wang continue; 218929fe46efSJiong Wang 2190d9ae7f2bSJakub Kicinski meta2->skip = true; 2191d9ae7f2bSJakub Kicinski meta3->skip = true; 2192d9ae7f2bSJakub Kicinski } 2193d9ae7f2bSJakub Kicinski } 2194d9ae7f2bSJakub Kicinski 2195d9ae7f2bSJakub Kicinski static int nfp_bpf_optimize(struct nfp_prog *nfp_prog) 2196d9ae7f2bSJakub Kicinski { 2197d9ae7f2bSJakub Kicinski nfp_bpf_opt_reg_init(nfp_prog); 2198d9ae7f2bSJakub Kicinski 2199d9ae7f2bSJakub Kicinski nfp_bpf_opt_ld_mask(nfp_prog); 2200d9ae7f2bSJakub Kicinski nfp_bpf_opt_ld_shift(nfp_prog); 2201d9ae7f2bSJakub Kicinski 2202d9ae7f2bSJakub Kicinski return 0; 2203d9ae7f2bSJakub Kicinski } 2204d9ae7f2bSJakub Kicinski 22052e85d388SJakub Kicinski static int nfp_bpf_ustore_calc(struct nfp_prog *nfp_prog, __le64 *ustore) 2206fd068ddcSJakub Kicinski { 2207fd068ddcSJakub Kicinski int i; 2208fd068ddcSJakub Kicinski 2209fd068ddcSJakub Kicinski for (i = 0; i < nfp_prog->prog_len; i++) { 2210fd068ddcSJakub Kicinski int err; 2211fd068ddcSJakub Kicinski 2212fd068ddcSJakub Kicinski err = nfp_ustore_check_valid_no_ecc(nfp_prog->prog[i]); 2213fd068ddcSJakub Kicinski if (err) 2214fd068ddcSJakub Kicinski return err; 2215fd068ddcSJakub Kicinski 2216fd068ddcSJakub Kicinski nfp_prog->prog[i] = nfp_ustore_calc_ecc_insn(nfp_prog->prog[i]); 22172e85d388SJakub Kicinski 22182e85d388SJakub Kicinski ustore[i] = cpu_to_le64(nfp_prog->prog[i]); 2219fd068ddcSJakub Kicinski } 2220fd068ddcSJakub Kicinski 2221fd068ddcSJakub Kicinski return 0; 2222fd068ddcSJakub Kicinski } 2223fd068ddcSJakub Kicinski 2224c6c580d7SJakub Kicinski int nfp_bpf_jit(struct nfp_prog *nfp_prog) 2225d9ae7f2bSJakub Kicinski { 2226d9ae7f2bSJakub Kicinski int ret; 2227d9ae7f2bSJakub Kicinski 2228d9ae7f2bSJakub Kicinski ret = nfp_bpf_optimize(nfp_prog); 2229d9ae7f2bSJakub Kicinski if (ret) 22309314c442SJakub Kicinski return ret; 2231d9ae7f2bSJakub Kicinski 2232d9ae7f2bSJakub Kicinski ret = nfp_translate(nfp_prog); 2233d9ae7f2bSJakub Kicinski if (ret) { 2234d9ae7f2bSJakub Kicinski pr_err("Translation failed with error %d (translated: %u)\n", 2235d9ae7f2bSJakub Kicinski ret, nfp_prog->n_translated); 22369314c442SJakub Kicinski return -EINVAL; 2237d9ae7f2bSJakub Kicinski } 2238d9ae7f2bSJakub Kicinski 22399314c442SJakub Kicinski return nfp_bpf_ustore_calc(nfp_prog, (__force __le64 *)nfp_prog->prog); 2240d9ae7f2bSJakub Kicinski } 2241