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, 995468a8b9SJakub Kicinski u8 mode, u8 xfer, u8 areg, u8 breg, u8 size, bool sync, bool indir) 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) | 1175468a8b9SJakub Kicinski FIELD_PREP(OP_CMD_INDIR, indir) | 118d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_MODE, mode); 119d9ae7f2bSJakub Kicinski 120d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 121d9ae7f2bSJakub Kicinski } 122d9ae7f2bSJakub Kicinski 123d9ae7f2bSJakub Kicinski static void 1245468a8b9SJakub Kicinski emit_cmd_any(struct nfp_prog *nfp_prog, enum cmd_tgt_map op, u8 mode, u8 xfer, 1255468a8b9SJakub Kicinski swreg lreg, swreg rreg, u8 size, bool sync, bool indir) 126d9ae7f2bSJakub Kicinski { 127d9ae7f2bSJakub Kicinski struct nfp_insn_re_regs reg; 128d9ae7f2bSJakub Kicinski int err; 129d9ae7f2bSJakub Kicinski 130d9ae7f2bSJakub Kicinski err = swreg_to_restricted(reg_none(), lreg, rreg, ®, false); 131d9ae7f2bSJakub Kicinski if (err) { 132d9ae7f2bSJakub Kicinski nfp_prog->error = err; 133d9ae7f2bSJakub Kicinski return; 134d9ae7f2bSJakub Kicinski } 135d9ae7f2bSJakub Kicinski if (reg.swap) { 136d9ae7f2bSJakub Kicinski pr_err("cmd can't swap arguments\n"); 137d9ae7f2bSJakub Kicinski nfp_prog->error = -EFAULT; 138d9ae7f2bSJakub Kicinski return; 139d9ae7f2bSJakub Kicinski } 140995e101fSJakub Kicinski if (reg.dst_lmextn || reg.src_lmextn) { 141995e101fSJakub Kicinski pr_err("cmd can't use LMextn\n"); 142995e101fSJakub Kicinski nfp_prog->error = -EFAULT; 143995e101fSJakub Kicinski return; 144995e101fSJakub Kicinski } 145d9ae7f2bSJakub Kicinski 1465468a8b9SJakub Kicinski __emit_cmd(nfp_prog, op, mode, xfer, reg.areg, reg.breg, size, sync, 1475468a8b9SJakub Kicinski indir); 1485468a8b9SJakub Kicinski } 1495468a8b9SJakub Kicinski 1505468a8b9SJakub Kicinski static void 1515468a8b9SJakub Kicinski emit_cmd(struct nfp_prog *nfp_prog, enum cmd_tgt_map op, u8 mode, u8 xfer, 1525468a8b9SJakub Kicinski swreg lreg, swreg rreg, u8 size, bool sync) 1535468a8b9SJakub Kicinski { 1545468a8b9SJakub Kicinski emit_cmd_any(nfp_prog, op, mode, xfer, lreg, rreg, size, sync, false); 155d9ae7f2bSJakub Kicinski } 156d9ae7f2bSJakub Kicinski 157d9ae7f2bSJakub Kicinski static void 1589879a381SJiong Wang emit_cmd_indir(struct nfp_prog *nfp_prog, enum cmd_tgt_map op, u8 mode, u8 xfer, 1599879a381SJiong Wang swreg lreg, swreg rreg, u8 size, bool sync) 1609879a381SJiong Wang { 1619879a381SJiong Wang emit_cmd_any(nfp_prog, op, mode, xfer, lreg, rreg, size, sync, true); 1629879a381SJiong Wang } 1639879a381SJiong Wang 1649879a381SJiong Wang static void 165d9ae7f2bSJakub Kicinski __emit_br(struct nfp_prog *nfp_prog, enum br_mask mask, enum br_ev_pip ev_pip, 166d9ae7f2bSJakub Kicinski enum br_ctx_signal_state css, u16 addr, u8 defer) 167d9ae7f2bSJakub Kicinski { 168d9ae7f2bSJakub Kicinski u16 addr_lo, addr_hi; 169d9ae7f2bSJakub Kicinski u64 insn; 170d9ae7f2bSJakub Kicinski 171d9ae7f2bSJakub Kicinski addr_lo = addr & (OP_BR_ADDR_LO >> __bf_shf(OP_BR_ADDR_LO)); 172d9ae7f2bSJakub Kicinski addr_hi = addr != addr_lo; 173d9ae7f2bSJakub Kicinski 174d9ae7f2bSJakub Kicinski insn = OP_BR_BASE | 175d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_MASK, mask) | 176d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_EV_PIP, ev_pip) | 177d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_CSS, css) | 178d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_DEFBR, defer) | 179d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_ADDR_LO, addr_lo) | 180d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_ADDR_HI, addr_hi); 181d9ae7f2bSJakub Kicinski 182d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 183d9ae7f2bSJakub Kicinski } 184d9ae7f2bSJakub Kicinski 185d9ae7f2bSJakub Kicinski static void emit_br_def(struct nfp_prog *nfp_prog, u16 addr, u8 defer) 186d9ae7f2bSJakub Kicinski { 187d9ae7f2bSJakub Kicinski if (defer > 2) { 188d9ae7f2bSJakub Kicinski pr_err("BUG: branch defer out of bounds %d\n", defer); 189d9ae7f2bSJakub Kicinski nfp_prog->error = -EFAULT; 190d9ae7f2bSJakub Kicinski return; 191d9ae7f2bSJakub Kicinski } 192d9ae7f2bSJakub Kicinski __emit_br(nfp_prog, BR_UNC, BR_EV_PIP_UNCOND, BR_CSS_NONE, addr, defer); 193d9ae7f2bSJakub Kicinski } 194d9ae7f2bSJakub Kicinski 195d9ae7f2bSJakub Kicinski static void 196d9ae7f2bSJakub Kicinski emit_br(struct nfp_prog *nfp_prog, enum br_mask mask, u16 addr, u8 defer) 197d9ae7f2bSJakub Kicinski { 198d9ae7f2bSJakub Kicinski __emit_br(nfp_prog, mask, 199d9ae7f2bSJakub Kicinski mask != BR_UNC ? BR_EV_PIP_COND : BR_EV_PIP_UNCOND, 200d9ae7f2bSJakub Kicinski BR_CSS_NONE, addr, defer); 201d9ae7f2bSJakub Kicinski } 202d9ae7f2bSJakub Kicinski 203d9ae7f2bSJakub Kicinski static void 204d9ae7f2bSJakub Kicinski __emit_immed(struct nfp_prog *nfp_prog, u16 areg, u16 breg, u16 imm_hi, 205d9ae7f2bSJakub Kicinski enum immed_width width, bool invert, 206995e101fSJakub Kicinski enum immed_shift shift, bool wr_both, 207995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 208d9ae7f2bSJakub Kicinski { 209d9ae7f2bSJakub Kicinski u64 insn; 210d9ae7f2bSJakub Kicinski 211d9ae7f2bSJakub Kicinski insn = OP_IMMED_BASE | 212d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_A_SRC, areg) | 213d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_B_SRC, breg) | 214d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_IMM, imm_hi) | 215d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_WIDTH, width) | 216d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_INV, invert) | 217d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_SHIFT, shift) | 218995e101fSJakub Kicinski FIELD_PREP(OP_IMMED_WR_AB, wr_both) | 219995e101fSJakub Kicinski FIELD_PREP(OP_IMMED_SRC_LMEXTN, src_lmextn) | 220995e101fSJakub Kicinski FIELD_PREP(OP_IMMED_DST_LMEXTN, dst_lmextn); 221d9ae7f2bSJakub Kicinski 222d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 223d9ae7f2bSJakub Kicinski } 224d9ae7f2bSJakub Kicinski 225d9ae7f2bSJakub Kicinski static void 226b3f868dfSJakub Kicinski emit_immed(struct nfp_prog *nfp_prog, swreg dst, u16 imm, 227d9ae7f2bSJakub Kicinski enum immed_width width, bool invert, enum immed_shift shift) 228d9ae7f2bSJakub Kicinski { 229d9ae7f2bSJakub Kicinski struct nfp_insn_ur_regs reg; 230d9ae7f2bSJakub Kicinski int err; 231d9ae7f2bSJakub Kicinski 232b3f868dfSJakub Kicinski if (swreg_type(dst) == NN_REG_IMM) { 233d9ae7f2bSJakub Kicinski nfp_prog->error = -EFAULT; 234d9ae7f2bSJakub Kicinski return; 235d9ae7f2bSJakub Kicinski } 236d9ae7f2bSJakub Kicinski 237d9ae7f2bSJakub Kicinski err = swreg_to_unrestricted(dst, dst, reg_imm(imm & 0xff), ®); 238d9ae7f2bSJakub Kicinski if (err) { 239d9ae7f2bSJakub Kicinski nfp_prog->error = err; 240d9ae7f2bSJakub Kicinski return; 241d9ae7f2bSJakub Kicinski } 242d9ae7f2bSJakub Kicinski 2433239e7bbSJiong Wang /* Use reg.dst when destination is No-Dest. */ 2443239e7bbSJiong Wang __emit_immed(nfp_prog, 2453239e7bbSJiong Wang swreg_type(dst) == NN_REG_NONE ? reg.dst : reg.areg, 2463239e7bbSJiong Wang reg.breg, imm >> 8, width, invert, shift, 2473239e7bbSJiong Wang reg.wr_both, reg.dst_lmextn, reg.src_lmextn); 248d9ae7f2bSJakub Kicinski } 249d9ae7f2bSJakub Kicinski 250d9ae7f2bSJakub Kicinski static void 251d9ae7f2bSJakub Kicinski __emit_shf(struct nfp_prog *nfp_prog, u16 dst, enum alu_dst_ab dst_ab, 252d9ae7f2bSJakub Kicinski enum shf_sc sc, u8 shift, 253995e101fSJakub Kicinski u16 areg, enum shf_op op, u16 breg, bool i8, bool sw, bool wr_both, 254995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 255d9ae7f2bSJakub Kicinski { 256d9ae7f2bSJakub Kicinski u64 insn; 257d9ae7f2bSJakub Kicinski 258d9ae7f2bSJakub Kicinski if (!FIELD_FIT(OP_SHF_SHIFT, shift)) { 259d9ae7f2bSJakub Kicinski nfp_prog->error = -EFAULT; 260d9ae7f2bSJakub Kicinski return; 261d9ae7f2bSJakub Kicinski } 262d9ae7f2bSJakub Kicinski 263d9ae7f2bSJakub Kicinski if (sc == SHF_SC_L_SHF) 264d9ae7f2bSJakub Kicinski shift = 32 - shift; 265d9ae7f2bSJakub Kicinski 266d9ae7f2bSJakub Kicinski insn = OP_SHF_BASE | 267d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_A_SRC, areg) | 268d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_SC, sc) | 269d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_B_SRC, breg) | 270d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_I8, i8) | 271d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_SW, sw) | 272d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_DST, dst) | 273d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_SHIFT, shift) | 274d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_OP, op) | 275d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_DST_AB, dst_ab) | 276995e101fSJakub Kicinski FIELD_PREP(OP_SHF_WR_AB, wr_both) | 277995e101fSJakub Kicinski FIELD_PREP(OP_SHF_SRC_LMEXTN, src_lmextn) | 278995e101fSJakub Kicinski FIELD_PREP(OP_SHF_DST_LMEXTN, dst_lmextn); 279d9ae7f2bSJakub Kicinski 280d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 281d9ae7f2bSJakub Kicinski } 282d9ae7f2bSJakub Kicinski 283d9ae7f2bSJakub Kicinski static void 284b3f868dfSJakub Kicinski emit_shf(struct nfp_prog *nfp_prog, swreg dst, 285b3f868dfSJakub Kicinski swreg lreg, enum shf_op op, swreg rreg, enum shf_sc sc, u8 shift) 286d9ae7f2bSJakub Kicinski { 287d9ae7f2bSJakub Kicinski struct nfp_insn_re_regs reg; 288d9ae7f2bSJakub Kicinski int err; 289d9ae7f2bSJakub Kicinski 290d9ae7f2bSJakub Kicinski err = swreg_to_restricted(dst, lreg, rreg, ®, true); 291d9ae7f2bSJakub Kicinski if (err) { 292d9ae7f2bSJakub Kicinski nfp_prog->error = err; 293d9ae7f2bSJakub Kicinski return; 294d9ae7f2bSJakub Kicinski } 295d9ae7f2bSJakub Kicinski 296d9ae7f2bSJakub Kicinski __emit_shf(nfp_prog, reg.dst, reg.dst_ab, sc, shift, 297995e101fSJakub Kicinski reg.areg, op, reg.breg, reg.i8, reg.swap, reg.wr_both, 298995e101fSJakub Kicinski reg.dst_lmextn, reg.src_lmextn); 299d9ae7f2bSJakub Kicinski } 300d9ae7f2bSJakub Kicinski 301d9ae7f2bSJakub Kicinski static void 302d9ae7f2bSJakub Kicinski __emit_alu(struct nfp_prog *nfp_prog, u16 dst, enum alu_dst_ab dst_ab, 303995e101fSJakub Kicinski u16 areg, enum alu_op op, u16 breg, bool swap, bool wr_both, 304995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 305d9ae7f2bSJakub Kicinski { 306d9ae7f2bSJakub Kicinski u64 insn; 307d9ae7f2bSJakub Kicinski 308d9ae7f2bSJakub Kicinski insn = OP_ALU_BASE | 309d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_A_SRC, areg) | 310d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_B_SRC, breg) | 311d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_DST, dst) | 312d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_SW, swap) | 313d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_OP, op) | 314d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_DST_AB, dst_ab) | 315995e101fSJakub Kicinski FIELD_PREP(OP_ALU_WR_AB, wr_both) | 316995e101fSJakub Kicinski FIELD_PREP(OP_ALU_SRC_LMEXTN, src_lmextn) | 317995e101fSJakub Kicinski FIELD_PREP(OP_ALU_DST_LMEXTN, dst_lmextn); 318d9ae7f2bSJakub Kicinski 319d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 320d9ae7f2bSJakub Kicinski } 321d9ae7f2bSJakub Kicinski 322d9ae7f2bSJakub Kicinski static void 323b3f868dfSJakub Kicinski emit_alu(struct nfp_prog *nfp_prog, swreg dst, 324b3f868dfSJakub Kicinski swreg lreg, enum alu_op op, swreg rreg) 325d9ae7f2bSJakub Kicinski { 326d9ae7f2bSJakub Kicinski struct nfp_insn_ur_regs reg; 327d9ae7f2bSJakub Kicinski int err; 328d9ae7f2bSJakub Kicinski 329d9ae7f2bSJakub Kicinski err = swreg_to_unrestricted(dst, lreg, rreg, ®); 330d9ae7f2bSJakub Kicinski if (err) { 331d9ae7f2bSJakub Kicinski nfp_prog->error = err; 332d9ae7f2bSJakub Kicinski return; 333d9ae7f2bSJakub Kicinski } 334d9ae7f2bSJakub Kicinski 335d9ae7f2bSJakub Kicinski __emit_alu(nfp_prog, reg.dst, reg.dst_ab, 336995e101fSJakub Kicinski reg.areg, op, reg.breg, reg.swap, reg.wr_both, 337995e101fSJakub Kicinski reg.dst_lmextn, reg.src_lmextn); 338d9ae7f2bSJakub Kicinski } 339d9ae7f2bSJakub Kicinski 340d9ae7f2bSJakub Kicinski static void 341d9ae7f2bSJakub Kicinski __emit_ld_field(struct nfp_prog *nfp_prog, enum shf_sc sc, 342d9ae7f2bSJakub Kicinski u8 areg, u8 bmask, u8 breg, u8 shift, bool imm8, 343995e101fSJakub Kicinski bool zero, bool swap, bool wr_both, 344995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 345d9ae7f2bSJakub Kicinski { 346d9ae7f2bSJakub Kicinski u64 insn; 347d9ae7f2bSJakub Kicinski 348d9ae7f2bSJakub Kicinski insn = OP_LDF_BASE | 349d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_A_SRC, areg) | 350d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_SC, sc) | 351d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_B_SRC, breg) | 352d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_I8, imm8) | 353d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_SW, swap) | 354d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_ZF, zero) | 355d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_BMASK, bmask) | 356d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_SHF, shift) | 357995e101fSJakub Kicinski FIELD_PREP(OP_LDF_WR_AB, wr_both) | 358995e101fSJakub Kicinski FIELD_PREP(OP_LDF_SRC_LMEXTN, src_lmextn) | 359995e101fSJakub Kicinski FIELD_PREP(OP_LDF_DST_LMEXTN, dst_lmextn); 360d9ae7f2bSJakub Kicinski 361d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 362d9ae7f2bSJakub Kicinski } 363d9ae7f2bSJakub Kicinski 364d9ae7f2bSJakub Kicinski static void 365bc8c80a8SJakub Kicinski emit_ld_field_any(struct nfp_prog *nfp_prog, swreg dst, u8 bmask, swreg src, 366bc8c80a8SJakub Kicinski enum shf_sc sc, u8 shift, bool zero) 367d9ae7f2bSJakub Kicinski { 368d9ae7f2bSJakub Kicinski struct nfp_insn_re_regs reg; 369d9ae7f2bSJakub Kicinski int err; 370d9ae7f2bSJakub Kicinski 3712de1be1dSJakub Kicinski /* Note: ld_field is special as it uses one of the src regs as dst */ 3722de1be1dSJakub Kicinski err = swreg_to_restricted(dst, dst, src, ®, true); 373d9ae7f2bSJakub Kicinski if (err) { 374d9ae7f2bSJakub Kicinski nfp_prog->error = err; 375d9ae7f2bSJakub Kicinski return; 376d9ae7f2bSJakub Kicinski } 377d9ae7f2bSJakub Kicinski 378d9ae7f2bSJakub Kicinski __emit_ld_field(nfp_prog, sc, reg.areg, bmask, reg.breg, shift, 379995e101fSJakub Kicinski reg.i8, zero, reg.swap, reg.wr_both, 380995e101fSJakub Kicinski reg.dst_lmextn, reg.src_lmextn); 381d9ae7f2bSJakub Kicinski } 382d9ae7f2bSJakub Kicinski 383d9ae7f2bSJakub Kicinski static void 384b3f868dfSJakub Kicinski emit_ld_field(struct nfp_prog *nfp_prog, swreg dst, u8 bmask, swreg src, 385d9ae7f2bSJakub Kicinski enum shf_sc sc, u8 shift) 386d9ae7f2bSJakub Kicinski { 387bc8c80a8SJakub Kicinski emit_ld_field_any(nfp_prog, dst, bmask, src, sc, shift, false); 388d9ae7f2bSJakub Kicinski } 389d9ae7f2bSJakub Kicinski 3902df03a50SJakub Kicinski static void 3912df03a50SJakub Kicinski __emit_lcsr(struct nfp_prog *nfp_prog, u16 areg, u16 breg, bool wr, u16 addr, 3922df03a50SJakub Kicinski bool dst_lmextn, bool src_lmextn) 3932df03a50SJakub Kicinski { 3942df03a50SJakub Kicinski u64 insn; 3952df03a50SJakub Kicinski 3962df03a50SJakub Kicinski insn = OP_LCSR_BASE | 3972df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_A_SRC, areg) | 3982df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_B_SRC, breg) | 3992df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_WRITE, wr) | 4002df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_ADDR, addr) | 4012df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_SRC_LMEXTN, src_lmextn) | 4022df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_DST_LMEXTN, dst_lmextn); 4032df03a50SJakub Kicinski 4042df03a50SJakub Kicinski nfp_prog_push(nfp_prog, insn); 4052df03a50SJakub Kicinski } 4062df03a50SJakub Kicinski 4072df03a50SJakub Kicinski static void emit_csr_wr(struct nfp_prog *nfp_prog, swreg src, u16 addr) 4082df03a50SJakub Kicinski { 4092df03a50SJakub Kicinski struct nfp_insn_ur_regs reg; 4102df03a50SJakub Kicinski int err; 4112df03a50SJakub Kicinski 4122df03a50SJakub Kicinski /* This instruction takes immeds instead of reg_none() for the ignored 4132df03a50SJakub Kicinski * operand, but we can't encode 2 immeds in one instr with our normal 4142df03a50SJakub Kicinski * swreg infra so if param is an immed, we encode as reg_none() and 4152df03a50SJakub Kicinski * copy the immed to both operands. 4162df03a50SJakub Kicinski */ 4172df03a50SJakub Kicinski if (swreg_type(src) == NN_REG_IMM) { 4182df03a50SJakub Kicinski err = swreg_to_unrestricted(reg_none(), src, reg_none(), ®); 4192df03a50SJakub Kicinski reg.breg = reg.areg; 4202df03a50SJakub Kicinski } else { 4212df03a50SJakub Kicinski err = swreg_to_unrestricted(reg_none(), src, reg_imm(0), ®); 4222df03a50SJakub Kicinski } 4232df03a50SJakub Kicinski if (err) { 4242df03a50SJakub Kicinski nfp_prog->error = err; 4252df03a50SJakub Kicinski return; 4262df03a50SJakub Kicinski } 4272df03a50SJakub Kicinski 4282df03a50SJakub Kicinski __emit_lcsr(nfp_prog, reg.areg, reg.breg, true, addr / 4, 4292df03a50SJakub Kicinski false, reg.src_lmextn); 4302df03a50SJakub Kicinski } 4312df03a50SJakub Kicinski 4321c03e03fSJakub Kicinski static void emit_nop(struct nfp_prog *nfp_prog) 4331c03e03fSJakub Kicinski { 4341c03e03fSJakub Kicinski __emit_immed(nfp_prog, UR_REG_IMM, UR_REG_IMM, 0, 0, 0, 0, 0, 0, 0); 4351c03e03fSJakub Kicinski } 4361c03e03fSJakub Kicinski 437d9ae7f2bSJakub Kicinski /* --- Wrappers --- */ 438d9ae7f2bSJakub Kicinski static bool pack_immed(u32 imm, u16 *val, enum immed_shift *shift) 439d9ae7f2bSJakub Kicinski { 440d9ae7f2bSJakub Kicinski if (!(imm & 0xffff0000)) { 441d9ae7f2bSJakub Kicinski *val = imm; 442d9ae7f2bSJakub Kicinski *shift = IMMED_SHIFT_0B; 443d9ae7f2bSJakub Kicinski } else if (!(imm & 0xff0000ff)) { 444d9ae7f2bSJakub Kicinski *val = imm >> 8; 445d9ae7f2bSJakub Kicinski *shift = IMMED_SHIFT_1B; 446d9ae7f2bSJakub Kicinski } else if (!(imm & 0x0000ffff)) { 447d9ae7f2bSJakub Kicinski *val = imm >> 16; 448d9ae7f2bSJakub Kicinski *shift = IMMED_SHIFT_2B; 449d9ae7f2bSJakub Kicinski } else { 450d9ae7f2bSJakub Kicinski return false; 451d9ae7f2bSJakub Kicinski } 452d9ae7f2bSJakub Kicinski 453d9ae7f2bSJakub Kicinski return true; 454d9ae7f2bSJakub Kicinski } 455d9ae7f2bSJakub Kicinski 456b3f868dfSJakub Kicinski static void wrp_immed(struct nfp_prog *nfp_prog, swreg dst, u32 imm) 457d9ae7f2bSJakub Kicinski { 458d9ae7f2bSJakub Kicinski enum immed_shift shift; 459d9ae7f2bSJakub Kicinski u16 val; 460d9ae7f2bSJakub Kicinski 461d9ae7f2bSJakub Kicinski if (pack_immed(imm, &val, &shift)) { 462d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, val, IMMED_WIDTH_ALL, false, shift); 463d9ae7f2bSJakub Kicinski } else if (pack_immed(~imm, &val, &shift)) { 464d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, val, IMMED_WIDTH_ALL, true, shift); 465d9ae7f2bSJakub Kicinski } else { 466d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, imm & 0xffff, IMMED_WIDTH_ALL, 467d9ae7f2bSJakub Kicinski false, IMMED_SHIFT_0B); 468d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, imm >> 16, IMMED_WIDTH_WORD, 469d9ae7f2bSJakub Kicinski false, IMMED_SHIFT_2B); 470d9ae7f2bSJakub Kicinski } 471d9ae7f2bSJakub Kicinski } 472d9ae7f2bSJakub Kicinski 473d9ae7f2bSJakub Kicinski /* ur_load_imm_any() - encode immediate or use tmp register (unrestricted) 474d9ae7f2bSJakub Kicinski * If the @imm is small enough encode it directly in operand and return 475d9ae7f2bSJakub Kicinski * otherwise load @imm to a spare register and return its encoding. 476d9ae7f2bSJakub Kicinski */ 477b3f868dfSJakub Kicinski static swreg ur_load_imm_any(struct nfp_prog *nfp_prog, u32 imm, swreg tmp_reg) 478d9ae7f2bSJakub Kicinski { 479d9ae7f2bSJakub Kicinski if (FIELD_FIT(UR_REG_IMM_MAX, imm)) 480d9ae7f2bSJakub Kicinski return reg_imm(imm); 481d9ae7f2bSJakub Kicinski 482d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, tmp_reg, imm); 483d9ae7f2bSJakub Kicinski return tmp_reg; 484d9ae7f2bSJakub Kicinski } 485d9ae7f2bSJakub Kicinski 486d9ae7f2bSJakub Kicinski /* re_load_imm_any() - encode immediate or use tmp register (restricted) 487d9ae7f2bSJakub Kicinski * If the @imm is small enough encode it directly in operand and return 488d9ae7f2bSJakub Kicinski * otherwise load @imm to a spare register and return its encoding. 489d9ae7f2bSJakub Kicinski */ 490b3f868dfSJakub Kicinski static swreg re_load_imm_any(struct nfp_prog *nfp_prog, u32 imm, swreg tmp_reg) 491d9ae7f2bSJakub Kicinski { 492d9ae7f2bSJakub Kicinski if (FIELD_FIT(RE_REG_IMM_MAX, imm)) 493d9ae7f2bSJakub Kicinski return reg_imm(imm); 494d9ae7f2bSJakub Kicinski 495d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, tmp_reg, imm); 496d9ae7f2bSJakub Kicinski return tmp_reg; 497d9ae7f2bSJakub Kicinski } 498d9ae7f2bSJakub Kicinski 499ff42bb9fSJakub Kicinski static void wrp_nops(struct nfp_prog *nfp_prog, unsigned int count) 500ff42bb9fSJakub Kicinski { 501ff42bb9fSJakub Kicinski while (count--) 502ff42bb9fSJakub Kicinski emit_nop(nfp_prog); 503ff42bb9fSJakub Kicinski } 504ff42bb9fSJakub Kicinski 505d9ae7f2bSJakub Kicinski static void 506d9ae7f2bSJakub Kicinski wrp_br_special(struct nfp_prog *nfp_prog, enum br_mask mask, 507d9ae7f2bSJakub Kicinski enum br_special special) 508d9ae7f2bSJakub Kicinski { 509d9ae7f2bSJakub Kicinski emit_br(nfp_prog, mask, 0, 0); 510d9ae7f2bSJakub Kicinski 511d9ae7f2bSJakub Kicinski nfp_prog->prog[nfp_prog->prog_len - 1] |= 512d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_SPECIAL, special); 513d9ae7f2bSJakub Kicinski } 514d9ae7f2bSJakub Kicinski 515c000dfb5SJakub Kicinski static void wrp_mov(struct nfp_prog *nfp_prog, swreg dst, swreg src) 516c000dfb5SJakub Kicinski { 517c000dfb5SJakub Kicinski emit_alu(nfp_prog, dst, reg_none(), ALU_OP_NONE, src); 518c000dfb5SJakub Kicinski } 519c000dfb5SJakub Kicinski 520d9ae7f2bSJakub Kicinski static void wrp_reg_mov(struct nfp_prog *nfp_prog, u16 dst, u16 src) 521d9ae7f2bSJakub Kicinski { 522c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_both(dst), reg_b(src)); 523d9ae7f2bSJakub Kicinski } 524d9ae7f2bSJakub Kicinski 5259879a381SJiong Wang /* wrp_reg_subpart() - load @field_len bytes from @offset of @src, write the 5269879a381SJiong Wang * result to @dst from low end. 5279879a381SJiong Wang */ 5289879a381SJiong Wang static void 5299879a381SJiong Wang wrp_reg_subpart(struct nfp_prog *nfp_prog, swreg dst, swreg src, u8 field_len, 5309879a381SJiong Wang u8 offset) 5319879a381SJiong Wang { 5329879a381SJiong Wang enum shf_sc sc = offset ? SHF_SC_R_SHF : SHF_SC_NONE; 5339879a381SJiong Wang u8 mask = (1 << field_len) - 1; 5349879a381SJiong Wang 5359879a381SJiong Wang emit_ld_field_any(nfp_prog, dst, mask, src, sc, offset * 8, true); 5369879a381SJiong Wang } 5379879a381SJiong Wang 5389879a381SJiong Wang /* NFP has Command Push Pull bus which supports bluk memory operations. */ 5399879a381SJiong Wang static int nfp_cpp_memcpy(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 5409879a381SJiong Wang { 5419879a381SJiong Wang bool descending_seq = meta->ldst_gather_len < 0; 5429879a381SJiong Wang s16 len = abs(meta->ldst_gather_len); 5439879a381SJiong Wang swreg src_base, off; 5449879a381SJiong Wang unsigned int i; 5459879a381SJiong Wang u8 xfer_num; 5469879a381SJiong Wang 5479879a381SJiong Wang if (WARN_ON_ONCE(len > 32)) 5489879a381SJiong Wang return -EOPNOTSUPP; 5499879a381SJiong Wang 5509879a381SJiong Wang off = re_load_imm_any(nfp_prog, meta->insn.off, imm_b(nfp_prog)); 5519879a381SJiong Wang src_base = reg_a(meta->insn.src_reg * 2); 5529879a381SJiong Wang xfer_num = round_up(len, 4) / 4; 5539879a381SJiong Wang 5549879a381SJiong Wang /* Memory read from source addr into transfer-in registers. */ 5559879a381SJiong Wang emit_cmd(nfp_prog, CMD_TGT_READ32_SWAP, CMD_MODE_32b, 0, src_base, off, 5569879a381SJiong Wang xfer_num - 1, true); 5579879a381SJiong Wang 5589879a381SJiong Wang /* Move from transfer-in to transfer-out. */ 5599879a381SJiong Wang for (i = 0; i < xfer_num; i++) 5609879a381SJiong Wang wrp_mov(nfp_prog, reg_xfer(i), reg_xfer(i)); 5619879a381SJiong Wang 5629879a381SJiong Wang off = re_load_imm_any(nfp_prog, meta->paired_st->off, imm_b(nfp_prog)); 5639879a381SJiong Wang 5649879a381SJiong Wang if (len <= 8) { 5659879a381SJiong Wang /* Use single direct_ref write8. */ 5669879a381SJiong Wang emit_cmd(nfp_prog, CMD_TGT_WRITE8_SWAP, CMD_MODE_32b, 0, 5679879a381SJiong Wang reg_a(meta->paired_st->dst_reg * 2), off, len - 1, 5689879a381SJiong Wang true); 5699879a381SJiong Wang } else if (IS_ALIGNED(len, 4)) { 5709879a381SJiong Wang /* Use single direct_ref write32. */ 5719879a381SJiong Wang emit_cmd(nfp_prog, CMD_TGT_WRITE32_SWAP, CMD_MODE_32b, 0, 5729879a381SJiong Wang reg_a(meta->paired_st->dst_reg * 2), off, xfer_num - 1, 5739879a381SJiong Wang true); 5749879a381SJiong Wang } else { 5759879a381SJiong Wang /* Use single indirect_ref write8. */ 5769879a381SJiong Wang wrp_immed(nfp_prog, reg_none(), 5779879a381SJiong Wang CMD_OVE_LEN | FIELD_PREP(CMD_OV_LEN, len - 1)); 5789879a381SJiong Wang emit_cmd_indir(nfp_prog, CMD_TGT_WRITE8_SWAP, CMD_MODE_32b, 0, 5799879a381SJiong Wang reg_a(meta->paired_st->dst_reg * 2), off, 5809879a381SJiong Wang len - 1, true); 5819879a381SJiong Wang } 5829879a381SJiong Wang 5839879a381SJiong Wang /* TODO: The following extra load is to make sure data flow be identical 5849879a381SJiong Wang * before and after we do memory copy optimization. 5859879a381SJiong Wang * 5869879a381SJiong Wang * The load destination register is not guaranteed to be dead, so we 5879879a381SJiong Wang * need to make sure it is loaded with the value the same as before 5889879a381SJiong Wang * this transformation. 5899879a381SJiong Wang * 5909879a381SJiong Wang * These extra loads could be removed once we have accurate register 5919879a381SJiong Wang * usage information. 5929879a381SJiong Wang */ 5939879a381SJiong Wang if (descending_seq) 5949879a381SJiong Wang xfer_num = 0; 5959879a381SJiong Wang else if (BPF_SIZE(meta->insn.code) != BPF_DW) 5969879a381SJiong Wang xfer_num = xfer_num - 1; 5979879a381SJiong Wang else 5989879a381SJiong Wang xfer_num = xfer_num - 2; 5999879a381SJiong Wang 6009879a381SJiong Wang switch (BPF_SIZE(meta->insn.code)) { 6019879a381SJiong Wang case BPF_B: 6029879a381SJiong Wang wrp_reg_subpart(nfp_prog, reg_both(meta->insn.dst_reg * 2), 6039879a381SJiong Wang reg_xfer(xfer_num), 1, 6049879a381SJiong Wang IS_ALIGNED(len, 4) ? 3 : (len & 3) - 1); 6059879a381SJiong Wang break; 6069879a381SJiong Wang case BPF_H: 6079879a381SJiong Wang wrp_reg_subpart(nfp_prog, reg_both(meta->insn.dst_reg * 2), 6089879a381SJiong Wang reg_xfer(xfer_num), 2, (len & 3) ^ 2); 6099879a381SJiong Wang break; 6109879a381SJiong Wang case BPF_W: 6119879a381SJiong Wang wrp_mov(nfp_prog, reg_both(meta->insn.dst_reg * 2), 6129879a381SJiong Wang reg_xfer(0)); 6139879a381SJiong Wang break; 6149879a381SJiong Wang case BPF_DW: 6159879a381SJiong Wang wrp_mov(nfp_prog, reg_both(meta->insn.dst_reg * 2), 6169879a381SJiong Wang reg_xfer(xfer_num)); 6179879a381SJiong Wang wrp_mov(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 6189879a381SJiong Wang reg_xfer(xfer_num + 1)); 6199879a381SJiong Wang break; 6209879a381SJiong Wang } 6219879a381SJiong Wang 6229879a381SJiong Wang if (BPF_SIZE(meta->insn.code) != BPF_DW) 6239879a381SJiong Wang wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 6249879a381SJiong Wang 6259879a381SJiong Wang return 0; 6269879a381SJiong Wang } 6279879a381SJiong Wang 628d9ae7f2bSJakub Kicinski static int 6290a793977SJakub Kicinski data_ld(struct nfp_prog *nfp_prog, swreg offset, u8 dst_gpr, int size) 630d9ae7f2bSJakub Kicinski { 631d9ae7f2bSJakub Kicinski unsigned int i; 632d9ae7f2bSJakub Kicinski u16 shift, sz; 633d9ae7f2bSJakub Kicinski 634d9ae7f2bSJakub Kicinski /* We load the value from the address indicated in @offset and then 635d9ae7f2bSJakub Kicinski * shift out the data we don't need. Note: this is big endian! 636d9ae7f2bSJakub Kicinski */ 6370a793977SJakub Kicinski sz = max(size, 4); 638d9ae7f2bSJakub Kicinski shift = size < 4 ? 4 - size : 0; 639d9ae7f2bSJakub Kicinski 6400a793977SJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_READ8, CMD_MODE_32b, 0, 6410a793977SJakub Kicinski pptr_reg(nfp_prog), offset, sz - 1, true); 6420a793977SJakub Kicinski 6430a793977SJakub Kicinski i = 0; 6440a793977SJakub Kicinski if (shift) 6450a793977SJakub Kicinski emit_shf(nfp_prog, reg_both(dst_gpr), reg_none(), SHF_OP_NONE, 6460a793977SJakub Kicinski reg_xfer(0), SHF_SC_R_SHF, shift * 8); 6470a793977SJakub Kicinski else 6480a793977SJakub Kicinski for (; i * 4 < size; i++) 6490a793977SJakub Kicinski wrp_mov(nfp_prog, reg_both(dst_gpr + i), reg_xfer(i)); 6500a793977SJakub Kicinski 6510a793977SJakub Kicinski if (i < 2) 6520a793977SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst_gpr + 1), 0); 6530a793977SJakub Kicinski 6540a793977SJakub Kicinski return 0; 6550a793977SJakub Kicinski } 6560a793977SJakub Kicinski 6570a793977SJakub Kicinski static int 6582ca71441SJakub Kicinski data_ld_host_order(struct nfp_prog *nfp_prog, u8 src_gpr, swreg offset, 6592ca71441SJakub Kicinski u8 dst_gpr, int size) 6602ca71441SJakub Kicinski { 6612ca71441SJakub Kicinski unsigned int i; 6622ca71441SJakub Kicinski u8 mask, sz; 6632ca71441SJakub Kicinski 6642ca71441SJakub Kicinski /* We load the value from the address indicated in @offset and then 6652ca71441SJakub Kicinski * mask out the data we don't need. Note: this is little endian! 6662ca71441SJakub Kicinski */ 6672ca71441SJakub Kicinski sz = max(size, 4); 6682ca71441SJakub Kicinski mask = size < 4 ? GENMASK(size - 1, 0) : 0; 6692ca71441SJakub Kicinski 6702ca71441SJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_READ32_SWAP, CMD_MODE_32b, 0, 6712ca71441SJakub Kicinski reg_a(src_gpr), offset, sz / 4 - 1, true); 6722ca71441SJakub Kicinski 6732ca71441SJakub Kicinski i = 0; 6742ca71441SJakub Kicinski if (mask) 6752ca71441SJakub Kicinski emit_ld_field_any(nfp_prog, reg_both(dst_gpr), mask, 6762ca71441SJakub Kicinski reg_xfer(0), SHF_SC_NONE, 0, true); 6772ca71441SJakub Kicinski else 6782ca71441SJakub Kicinski for (; i * 4 < size; i++) 6792ca71441SJakub Kicinski wrp_mov(nfp_prog, reg_both(dst_gpr + i), reg_xfer(i)); 6802ca71441SJakub Kicinski 6812ca71441SJakub Kicinski if (i < 2) 6822ca71441SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst_gpr + 1), 0); 6832ca71441SJakub Kicinski 6842ca71441SJakub Kicinski return 0; 6852ca71441SJakub Kicinski } 6862ca71441SJakub Kicinski 6872ca71441SJakub Kicinski static int 6880a793977SJakub Kicinski construct_data_ind_ld(struct nfp_prog *nfp_prog, u16 offset, u16 src, u8 size) 6890a793977SJakub Kicinski { 6900a793977SJakub Kicinski swreg tmp_reg; 6910a793977SJakub Kicinski 692d9ae7f2bSJakub Kicinski /* Calculate the true offset (src_reg + imm) */ 693d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, offset, imm_b(nfp_prog)); 6940a793977SJakub Kicinski emit_alu(nfp_prog, imm_both(nfp_prog), reg_a(src), ALU_OP_ADD, tmp_reg); 6950a793977SJakub Kicinski 696d9ae7f2bSJakub Kicinski /* Check packet length (size guaranteed to fit b/c it's u8) */ 697d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_a(nfp_prog), 698d9ae7f2bSJakub Kicinski imm_a(nfp_prog), ALU_OP_ADD, reg_imm(size)); 699d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 70018e53b6cSJakub Kicinski plen_reg(nfp_prog), ALU_OP_SUB, imm_a(nfp_prog)); 701d9ae7f2bSJakub Kicinski wrp_br_special(nfp_prog, BR_BLO, OP_BR_GO_ABORT); 7020a793977SJakub Kicinski 703d9ae7f2bSJakub Kicinski /* Load data */ 7040a793977SJakub Kicinski return data_ld(nfp_prog, imm_b(nfp_prog), 0, size); 705d9ae7f2bSJakub Kicinski } 706d9ae7f2bSJakub Kicinski 707d9ae7f2bSJakub Kicinski static int construct_data_ld(struct nfp_prog *nfp_prog, u16 offset, u8 size) 708d9ae7f2bSJakub Kicinski { 7090a793977SJakub Kicinski swreg tmp_reg; 7100a793977SJakub Kicinski 7110a793977SJakub Kicinski /* Check packet length */ 7120a793977SJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, offset + size, imm_a(nfp_prog)); 7130a793977SJakub Kicinski emit_alu(nfp_prog, reg_none(), plen_reg(nfp_prog), ALU_OP_SUB, tmp_reg); 7140a793977SJakub Kicinski wrp_br_special(nfp_prog, BR_BLO, OP_BR_GO_ABORT); 7150a793977SJakub Kicinski 7160a793977SJakub Kicinski /* Load data */ 7170a793977SJakub Kicinski tmp_reg = re_load_imm_any(nfp_prog, offset, imm_b(nfp_prog)); 7180a793977SJakub Kicinski return data_ld(nfp_prog, tmp_reg, 0, size); 719d9ae7f2bSJakub Kicinski } 720d9ae7f2bSJakub Kicinski 721e663fe38SJakub Kicinski static int 722e663fe38SJakub Kicinski data_stx_host_order(struct nfp_prog *nfp_prog, u8 dst_gpr, swreg offset, 723e663fe38SJakub Kicinski u8 src_gpr, u8 size) 724e663fe38SJakub Kicinski { 725e663fe38SJakub Kicinski unsigned int i; 726e663fe38SJakub Kicinski 727e663fe38SJakub Kicinski for (i = 0; i * 4 < size; i++) 728e663fe38SJakub Kicinski wrp_mov(nfp_prog, reg_xfer(i), reg_a(src_gpr + i)); 729e663fe38SJakub Kicinski 730e663fe38SJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_WRITE8_SWAP, CMD_MODE_32b, 0, 731e663fe38SJakub Kicinski reg_a(dst_gpr), offset, size - 1, true); 732e663fe38SJakub Kicinski 733e663fe38SJakub Kicinski return 0; 734e663fe38SJakub Kicinski } 735e663fe38SJakub Kicinski 736e663fe38SJakub Kicinski static int 737e663fe38SJakub Kicinski data_st_host_order(struct nfp_prog *nfp_prog, u8 dst_gpr, swreg offset, 738e663fe38SJakub Kicinski u64 imm, u8 size) 739e663fe38SJakub Kicinski { 740e663fe38SJakub Kicinski wrp_immed(nfp_prog, reg_xfer(0), imm); 741e663fe38SJakub Kicinski if (size == 8) 742e663fe38SJakub Kicinski wrp_immed(nfp_prog, reg_xfer(1), imm >> 32); 743e663fe38SJakub Kicinski 744e663fe38SJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_WRITE8_SWAP, CMD_MODE_32b, 0, 745e663fe38SJakub Kicinski reg_a(dst_gpr), offset, size - 1, true); 746e663fe38SJakub Kicinski 747e663fe38SJakub Kicinski return 0; 748e663fe38SJakub Kicinski } 749e663fe38SJakub Kicinski 750ee9133a8SJakub Kicinski typedef int 751ee9133a8SJakub Kicinski (*lmem_step)(struct nfp_prog *nfp_prog, u8 gpr, u8 gpr_byte, s32 off, 7522df03a50SJakub Kicinski unsigned int size, bool first, bool new_gpr, bool last, bool lm3, 7532df03a50SJakub Kicinski bool needs_inc); 754a82b23fbSJakub Kicinski 755a82b23fbSJakub Kicinski static int 756a82b23fbSJakub Kicinski wrp_lmem_load(struct nfp_prog *nfp_prog, u8 dst, u8 dst_byte, s32 off, 7572df03a50SJakub Kicinski unsigned int size, bool first, bool new_gpr, bool last, bool lm3, 7582df03a50SJakub Kicinski bool needs_inc) 759a82b23fbSJakub Kicinski { 7602df03a50SJakub Kicinski bool should_inc = needs_inc && new_gpr && !last; 761a82b23fbSJakub Kicinski u32 idx, src_byte; 762a82b23fbSJakub Kicinski enum shf_sc sc; 763a82b23fbSJakub Kicinski swreg reg; 764a82b23fbSJakub Kicinski int shf; 765a82b23fbSJakub Kicinski u8 mask; 766a82b23fbSJakub Kicinski 767a82b23fbSJakub Kicinski if (WARN_ON_ONCE(dst_byte + size > 4 || off % 4 + size > 4)) 768a82b23fbSJakub Kicinski return -EOPNOTSUPP; 769a82b23fbSJakub Kicinski 770a82b23fbSJakub Kicinski idx = off / 4; 771a82b23fbSJakub Kicinski 772a82b23fbSJakub Kicinski /* Move the entire word */ 773a82b23fbSJakub Kicinski if (size == 4) { 7742df03a50SJakub Kicinski wrp_mov(nfp_prog, reg_both(dst), 7752df03a50SJakub Kicinski should_inc ? reg_lm_inc(3) : reg_lm(lm3 ? 3 : 0, idx)); 776a82b23fbSJakub Kicinski return 0; 777a82b23fbSJakub Kicinski } 778a82b23fbSJakub Kicinski 7792df03a50SJakub Kicinski if (WARN_ON_ONCE(lm3 && idx > RE_REG_LM_IDX_MAX)) 7802df03a50SJakub Kicinski return -EOPNOTSUPP; 7812df03a50SJakub Kicinski 782a82b23fbSJakub Kicinski src_byte = off % 4; 783a82b23fbSJakub Kicinski 784a82b23fbSJakub Kicinski mask = (1 << size) - 1; 785a82b23fbSJakub Kicinski mask <<= dst_byte; 786a82b23fbSJakub Kicinski 787a82b23fbSJakub Kicinski if (WARN_ON_ONCE(mask > 0xf)) 788a82b23fbSJakub Kicinski return -EOPNOTSUPP; 789a82b23fbSJakub Kicinski 790a82b23fbSJakub Kicinski shf = abs(src_byte - dst_byte) * 8; 791a82b23fbSJakub Kicinski if (src_byte == dst_byte) { 792a82b23fbSJakub Kicinski sc = SHF_SC_NONE; 793a82b23fbSJakub Kicinski } else if (src_byte < dst_byte) { 794a82b23fbSJakub Kicinski shf = 32 - shf; 795a82b23fbSJakub Kicinski sc = SHF_SC_L_SHF; 796a82b23fbSJakub Kicinski } else { 797a82b23fbSJakub Kicinski sc = SHF_SC_R_SHF; 798a82b23fbSJakub Kicinski } 799a82b23fbSJakub Kicinski 800a82b23fbSJakub Kicinski /* ld_field can address fewer indexes, if offset too large do RMW. 801a82b23fbSJakub Kicinski * Because we RMV twice we waste 2 cycles on unaligned 8 byte writes. 802a82b23fbSJakub Kicinski */ 803a82b23fbSJakub Kicinski if (idx <= RE_REG_LM_IDX_MAX) { 8042df03a50SJakub Kicinski reg = reg_lm(lm3 ? 3 : 0, idx); 805a82b23fbSJakub Kicinski } else { 806a82b23fbSJakub Kicinski reg = imm_a(nfp_prog); 8079a90c83cSJakub Kicinski /* If it's not the first part of the load and we start a new GPR 8089a90c83cSJakub Kicinski * that means we are loading a second part of the LMEM word into 8099a90c83cSJakub Kicinski * a new GPR. IOW we've already looked that LMEM word and 8109a90c83cSJakub Kicinski * therefore it has been loaded into imm_a(). 8119a90c83cSJakub Kicinski */ 8129a90c83cSJakub Kicinski if (first || !new_gpr) 813a82b23fbSJakub Kicinski wrp_mov(nfp_prog, reg, reg_lm(0, idx)); 814a82b23fbSJakub Kicinski } 815a82b23fbSJakub Kicinski 816a82b23fbSJakub Kicinski emit_ld_field_any(nfp_prog, reg_both(dst), mask, reg, sc, shf, new_gpr); 817a82b23fbSJakub Kicinski 8182df03a50SJakub Kicinski if (should_inc) 8192df03a50SJakub Kicinski wrp_mov(nfp_prog, reg_none(), reg_lm_inc(3)); 8202df03a50SJakub Kicinski 821a82b23fbSJakub Kicinski return 0; 822a82b23fbSJakub Kicinski } 823ee9133a8SJakub Kicinski 824ee9133a8SJakub Kicinski static int 825ee9133a8SJakub Kicinski wrp_lmem_store(struct nfp_prog *nfp_prog, u8 src, u8 src_byte, s32 off, 8262df03a50SJakub Kicinski unsigned int size, bool first, bool new_gpr, bool last, bool lm3, 8272df03a50SJakub Kicinski bool needs_inc) 828ee9133a8SJakub Kicinski { 8292df03a50SJakub Kicinski bool should_inc = needs_inc && new_gpr && !last; 830ee9133a8SJakub Kicinski u32 idx, dst_byte; 831ee9133a8SJakub Kicinski enum shf_sc sc; 832ee9133a8SJakub Kicinski swreg reg; 833ee9133a8SJakub Kicinski int shf; 834ee9133a8SJakub Kicinski u8 mask; 835ee9133a8SJakub Kicinski 836ee9133a8SJakub Kicinski if (WARN_ON_ONCE(src_byte + size > 4 || off % 4 + size > 4)) 837ee9133a8SJakub Kicinski return -EOPNOTSUPP; 838ee9133a8SJakub Kicinski 839ee9133a8SJakub Kicinski idx = off / 4; 840ee9133a8SJakub Kicinski 841ee9133a8SJakub Kicinski /* Move the entire word */ 842ee9133a8SJakub Kicinski if (size == 4) { 8432df03a50SJakub Kicinski wrp_mov(nfp_prog, 8442df03a50SJakub Kicinski should_inc ? reg_lm_inc(3) : reg_lm(lm3 ? 3 : 0, idx), 8452df03a50SJakub Kicinski reg_b(src)); 846ee9133a8SJakub Kicinski return 0; 847ee9133a8SJakub Kicinski } 848ee9133a8SJakub Kicinski 8492df03a50SJakub Kicinski if (WARN_ON_ONCE(lm3 && idx > RE_REG_LM_IDX_MAX)) 8502df03a50SJakub Kicinski return -EOPNOTSUPP; 8512df03a50SJakub Kicinski 852ee9133a8SJakub Kicinski dst_byte = off % 4; 853ee9133a8SJakub Kicinski 854ee9133a8SJakub Kicinski mask = (1 << size) - 1; 855ee9133a8SJakub Kicinski mask <<= dst_byte; 856ee9133a8SJakub Kicinski 857ee9133a8SJakub Kicinski if (WARN_ON_ONCE(mask > 0xf)) 858ee9133a8SJakub Kicinski return -EOPNOTSUPP; 859ee9133a8SJakub Kicinski 860ee9133a8SJakub Kicinski shf = abs(src_byte - dst_byte) * 8; 861ee9133a8SJakub Kicinski if (src_byte == dst_byte) { 862ee9133a8SJakub Kicinski sc = SHF_SC_NONE; 863ee9133a8SJakub Kicinski } else if (src_byte < dst_byte) { 864ee9133a8SJakub Kicinski shf = 32 - shf; 865ee9133a8SJakub Kicinski sc = SHF_SC_L_SHF; 866ee9133a8SJakub Kicinski } else { 867ee9133a8SJakub Kicinski sc = SHF_SC_R_SHF; 868ee9133a8SJakub Kicinski } 869ee9133a8SJakub Kicinski 870ee9133a8SJakub Kicinski /* ld_field can address fewer indexes, if offset too large do RMW. 871ee9133a8SJakub Kicinski * Because we RMV twice we waste 2 cycles on unaligned 8 byte writes. 872ee9133a8SJakub Kicinski */ 873ee9133a8SJakub Kicinski if (idx <= RE_REG_LM_IDX_MAX) { 8742df03a50SJakub Kicinski reg = reg_lm(lm3 ? 3 : 0, idx); 875ee9133a8SJakub Kicinski } else { 876ee9133a8SJakub Kicinski reg = imm_a(nfp_prog); 8779a90c83cSJakub Kicinski /* Only first and last LMEM locations are going to need RMW, 8789a90c83cSJakub Kicinski * the middle location will be overwritten fully. 8799a90c83cSJakub Kicinski */ 8809a90c83cSJakub Kicinski if (first || last) 881ee9133a8SJakub Kicinski wrp_mov(nfp_prog, reg, reg_lm(0, idx)); 882ee9133a8SJakub Kicinski } 883ee9133a8SJakub Kicinski 884ee9133a8SJakub Kicinski emit_ld_field(nfp_prog, reg, mask, reg_b(src), sc, shf); 885ee9133a8SJakub Kicinski 8869a90c83cSJakub Kicinski if (new_gpr || last) { 887ee9133a8SJakub Kicinski if (idx > RE_REG_LM_IDX_MAX) 888ee9133a8SJakub Kicinski wrp_mov(nfp_prog, reg_lm(0, idx), reg); 8892df03a50SJakub Kicinski if (should_inc) 8902df03a50SJakub Kicinski wrp_mov(nfp_prog, reg_none(), reg_lm_inc(3)); 8919a90c83cSJakub Kicinski } 892ee9133a8SJakub Kicinski 893ee9133a8SJakub Kicinski return 0; 894ee9133a8SJakub Kicinski } 895ee9133a8SJakub Kicinski 896ee9133a8SJakub Kicinski static int 897ee9133a8SJakub Kicinski mem_op_stack(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 898b14157eeSJakub Kicinski unsigned int size, unsigned int ptr_off, u8 gpr, u8 ptr_gpr, 899b14157eeSJakub Kicinski bool clr_gpr, lmem_step step) 900ee9133a8SJakub Kicinski { 901d3488480SJakub Kicinski s32 off = nfp_prog->stack_depth + meta->insn.off + ptr_off; 9029a90c83cSJakub Kicinski bool first = true, last; 9032df03a50SJakub Kicinski bool needs_inc = false; 9042df03a50SJakub Kicinski swreg stack_off_reg; 905a82b23fbSJakub Kicinski u8 prev_gpr = 255; 906ee9133a8SJakub Kicinski u32 gpr_byte = 0; 9072df03a50SJakub Kicinski bool lm3 = true; 908ee9133a8SJakub Kicinski int ret; 909ee9133a8SJakub Kicinski 910b14157eeSJakub Kicinski if (meta->ptr_not_const) { 911b14157eeSJakub Kicinski /* Use of the last encountered ptr_off is OK, they all have 912b14157eeSJakub Kicinski * the same alignment. Depend on low bits of value being 913b14157eeSJakub Kicinski * discarded when written to LMaddr register. 914b14157eeSJakub Kicinski */ 915b14157eeSJakub Kicinski stack_off_reg = ur_load_imm_any(nfp_prog, meta->insn.off, 916b14157eeSJakub Kicinski stack_imm(nfp_prog)); 917b14157eeSJakub Kicinski 918b14157eeSJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), 919b14157eeSJakub Kicinski reg_a(ptr_gpr), ALU_OP_ADD, stack_off_reg); 920b14157eeSJakub Kicinski 921b14157eeSJakub Kicinski needs_inc = true; 922b14157eeSJakub Kicinski } else if (off + size <= 64) { 9232df03a50SJakub Kicinski /* We can reach bottom 64B with LMaddr0 */ 9242df03a50SJakub Kicinski lm3 = false; 9252df03a50SJakub Kicinski } else if (round_down(off, 32) == round_down(off + size - 1, 32)) { 9262df03a50SJakub Kicinski /* We have to set up a new pointer. If we know the offset 9272df03a50SJakub Kicinski * and the entire access falls into a single 32 byte aligned 9282df03a50SJakub Kicinski * window we won't have to increment the LM pointer. 9292df03a50SJakub Kicinski * The 32 byte alignment is imporant because offset is ORed in 9302df03a50SJakub Kicinski * not added when doing *l$indexN[off]. 9312df03a50SJakub Kicinski */ 9322df03a50SJakub Kicinski stack_off_reg = ur_load_imm_any(nfp_prog, round_down(off, 32), 9332df03a50SJakub Kicinski stack_imm(nfp_prog)); 9342df03a50SJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), 9352df03a50SJakub Kicinski stack_reg(nfp_prog), ALU_OP_ADD, stack_off_reg); 9362df03a50SJakub Kicinski 9372df03a50SJakub Kicinski off %= 32; 9382df03a50SJakub Kicinski } else { 9392df03a50SJakub Kicinski stack_off_reg = ur_load_imm_any(nfp_prog, round_down(off, 4), 9402df03a50SJakub Kicinski stack_imm(nfp_prog)); 9412df03a50SJakub Kicinski 9422df03a50SJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), 9432df03a50SJakub Kicinski stack_reg(nfp_prog), ALU_OP_ADD, stack_off_reg); 9442df03a50SJakub Kicinski 9452df03a50SJakub Kicinski needs_inc = true; 9462df03a50SJakub Kicinski } 9472df03a50SJakub Kicinski if (lm3) { 9482df03a50SJakub Kicinski emit_csr_wr(nfp_prog, imm_b(nfp_prog), NFP_CSR_ACT_LM_ADDR3); 9492df03a50SJakub Kicinski /* For size < 4 one slot will be filled by zeroing of upper. */ 9502df03a50SJakub Kicinski wrp_nops(nfp_prog, clr_gpr && size < 8 ? 2 : 3); 9512df03a50SJakub Kicinski } 9522df03a50SJakub Kicinski 953a82b23fbSJakub Kicinski if (clr_gpr && size < 8) 954a82b23fbSJakub Kicinski wrp_immed(nfp_prog, reg_both(gpr + 1), 0); 955a82b23fbSJakub Kicinski 956ee9133a8SJakub Kicinski while (size) { 957ee9133a8SJakub Kicinski u32 slice_end; 958ee9133a8SJakub Kicinski u8 slice_size; 959ee9133a8SJakub Kicinski 960ee9133a8SJakub Kicinski slice_size = min(size, 4 - gpr_byte); 961ee9133a8SJakub Kicinski slice_end = min(off + slice_size, round_up(off + 1, 4)); 962ee9133a8SJakub Kicinski slice_size = slice_end - off; 963ee9133a8SJakub Kicinski 9649a90c83cSJakub Kicinski last = slice_size == size; 9659a90c83cSJakub Kicinski 9662df03a50SJakub Kicinski if (needs_inc) 9672df03a50SJakub Kicinski off %= 4; 9682df03a50SJakub Kicinski 969a82b23fbSJakub Kicinski ret = step(nfp_prog, gpr, gpr_byte, off, slice_size, 9702df03a50SJakub Kicinski first, gpr != prev_gpr, last, lm3, needs_inc); 971ee9133a8SJakub Kicinski if (ret) 972ee9133a8SJakub Kicinski return ret; 973ee9133a8SJakub Kicinski 974a82b23fbSJakub Kicinski prev_gpr = gpr; 9759a90c83cSJakub Kicinski first = false; 9769a90c83cSJakub Kicinski 977ee9133a8SJakub Kicinski gpr_byte += slice_size; 978ee9133a8SJakub Kicinski if (gpr_byte >= 4) { 979ee9133a8SJakub Kicinski gpr_byte -= 4; 980ee9133a8SJakub Kicinski gpr++; 981ee9133a8SJakub Kicinski } 982ee9133a8SJakub Kicinski 983ee9133a8SJakub Kicinski size -= slice_size; 984ee9133a8SJakub Kicinski off += slice_size; 985ee9133a8SJakub Kicinski } 986ee9133a8SJakub Kicinski 987ee9133a8SJakub Kicinski return 0; 988ee9133a8SJakub Kicinski } 989ee9133a8SJakub Kicinski 990d9ae7f2bSJakub Kicinski static void 991d9ae7f2bSJakub Kicinski wrp_alu_imm(struct nfp_prog *nfp_prog, u8 dst, enum alu_op alu_op, u32 imm) 992d9ae7f2bSJakub Kicinski { 993b3f868dfSJakub Kicinski swreg tmp_reg; 994d9ae7f2bSJakub Kicinski 995d9ae7f2bSJakub Kicinski if (alu_op == ALU_OP_AND) { 996d9ae7f2bSJakub Kicinski if (!imm) 997d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), 0); 998d9ae7f2bSJakub Kicinski if (!imm || !~imm) 999d9ae7f2bSJakub Kicinski return; 1000d9ae7f2bSJakub Kicinski } 1001d9ae7f2bSJakub Kicinski if (alu_op == ALU_OP_OR) { 1002d9ae7f2bSJakub Kicinski if (!~imm) 1003d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), ~0U); 1004d9ae7f2bSJakub Kicinski if (!imm || !~imm) 1005d9ae7f2bSJakub Kicinski return; 1006d9ae7f2bSJakub Kicinski } 1007d9ae7f2bSJakub Kicinski if (alu_op == ALU_OP_XOR) { 1008d9ae7f2bSJakub Kicinski if (!~imm) 1009d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_none(), 10105d42ced1SJiong Wang ALU_OP_NOT, reg_b(dst)); 1011d9ae7f2bSJakub Kicinski if (!imm || !~imm) 1012d9ae7f2bSJakub Kicinski return; 1013d9ae7f2bSJakub Kicinski } 1014d9ae7f2bSJakub Kicinski 1015d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm, imm_b(nfp_prog)); 1016d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_a(dst), alu_op, tmp_reg); 1017d9ae7f2bSJakub Kicinski } 1018d9ae7f2bSJakub Kicinski 1019d9ae7f2bSJakub Kicinski static int 1020d9ae7f2bSJakub Kicinski wrp_alu64_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1021d9ae7f2bSJakub Kicinski enum alu_op alu_op, bool skip) 1022d9ae7f2bSJakub Kicinski { 1023d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1024d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1025d9ae7f2bSJakub Kicinski 1026d9ae7f2bSJakub Kicinski if (skip) { 1027d9ae7f2bSJakub Kicinski meta->skip = true; 1028d9ae7f2bSJakub Kicinski return 0; 1029d9ae7f2bSJakub Kicinski } 1030d9ae7f2bSJakub Kicinski 1031d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, alu_op, imm & ~0U); 1032d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2 + 1, alu_op, imm >> 32); 1033d9ae7f2bSJakub Kicinski 1034d9ae7f2bSJakub Kicinski return 0; 1035d9ae7f2bSJakub Kicinski } 1036d9ae7f2bSJakub Kicinski 1037d9ae7f2bSJakub Kicinski static int 1038d9ae7f2bSJakub Kicinski wrp_alu64_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1039d9ae7f2bSJakub Kicinski enum alu_op alu_op) 1040d9ae7f2bSJakub Kicinski { 1041d9ae7f2bSJakub Kicinski u8 dst = meta->insn.dst_reg * 2, src = meta->insn.src_reg * 2; 1042d9ae7f2bSJakub Kicinski 1043d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_a(dst), alu_op, reg_b(src)); 1044d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst + 1), 1045d9ae7f2bSJakub Kicinski reg_a(dst + 1), alu_op, reg_b(src + 1)); 1046d9ae7f2bSJakub Kicinski 1047d9ae7f2bSJakub Kicinski return 0; 1048d9ae7f2bSJakub Kicinski } 1049d9ae7f2bSJakub Kicinski 1050d9ae7f2bSJakub Kicinski static int 1051d9ae7f2bSJakub Kicinski wrp_alu32_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1052d9ae7f2bSJakub Kicinski enum alu_op alu_op, bool skip) 1053d9ae7f2bSJakub Kicinski { 1054d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1055d9ae7f2bSJakub Kicinski 1056d9ae7f2bSJakub Kicinski if (skip) { 1057d9ae7f2bSJakub Kicinski meta->skip = true; 1058d9ae7f2bSJakub Kicinski return 0; 1059d9ae7f2bSJakub Kicinski } 1060d9ae7f2bSJakub Kicinski 1061d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, alu_op, insn->imm); 1062d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 1063d9ae7f2bSJakub Kicinski 1064d9ae7f2bSJakub Kicinski return 0; 1065d9ae7f2bSJakub Kicinski } 1066d9ae7f2bSJakub Kicinski 1067d9ae7f2bSJakub Kicinski static int 1068d9ae7f2bSJakub Kicinski wrp_alu32_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1069d9ae7f2bSJakub Kicinski enum alu_op alu_op) 1070d9ae7f2bSJakub Kicinski { 1071d9ae7f2bSJakub Kicinski u8 dst = meta->insn.dst_reg * 2, src = meta->insn.src_reg * 2; 1072d9ae7f2bSJakub Kicinski 1073d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_a(dst), alu_op, reg_b(src)); 1074d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 1075d9ae7f2bSJakub Kicinski 1076d9ae7f2bSJakub Kicinski return 0; 1077d9ae7f2bSJakub Kicinski } 1078d9ae7f2bSJakub Kicinski 1079d9ae7f2bSJakub Kicinski static void 1080d9ae7f2bSJakub Kicinski wrp_test_reg_one(struct nfp_prog *nfp_prog, u8 dst, enum alu_op alu_op, u8 src, 1081d9ae7f2bSJakub Kicinski enum br_mask br_mask, u16 off) 1082d9ae7f2bSJakub Kicinski { 1083d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(dst), alu_op, reg_b(src)); 1084d9ae7f2bSJakub Kicinski emit_br(nfp_prog, br_mask, off, 0); 1085d9ae7f2bSJakub Kicinski } 1086d9ae7f2bSJakub Kicinski 1087d9ae7f2bSJakub Kicinski static int 1088d9ae7f2bSJakub Kicinski wrp_test_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1089d9ae7f2bSJakub Kicinski enum alu_op alu_op, enum br_mask br_mask) 1090d9ae7f2bSJakub Kicinski { 1091d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1092d9ae7f2bSJakub Kicinski 1093d9ae7f2bSJakub Kicinski wrp_test_reg_one(nfp_prog, insn->dst_reg * 2, alu_op, 1094d9ae7f2bSJakub Kicinski insn->src_reg * 2, br_mask, insn->off); 1095d9ae7f2bSJakub Kicinski wrp_test_reg_one(nfp_prog, insn->dst_reg * 2 + 1, alu_op, 1096d9ae7f2bSJakub Kicinski insn->src_reg * 2 + 1, br_mask, insn->off); 1097d9ae7f2bSJakub Kicinski 1098d9ae7f2bSJakub Kicinski return 0; 1099d9ae7f2bSJakub Kicinski } 1100d9ae7f2bSJakub Kicinski 1101d9ae7f2bSJakub Kicinski static int 1102d9ae7f2bSJakub Kicinski wrp_cmp_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1103d9ae7f2bSJakub Kicinski enum br_mask br_mask, bool swap) 1104d9ae7f2bSJakub Kicinski { 1105d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1106d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1107d9ae7f2bSJakub Kicinski u8 reg = insn->dst_reg * 2; 1108b3f868dfSJakub Kicinski swreg tmp_reg; 1109d9ae7f2bSJakub Kicinski 1110d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 1111d9ae7f2bSJakub Kicinski if (!swap) 1112d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(reg), ALU_OP_SUB, tmp_reg); 1113d9ae7f2bSJakub Kicinski else 1114d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), tmp_reg, ALU_OP_SUB, reg_a(reg)); 1115d9ae7f2bSJakub Kicinski 1116d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 1117d9ae7f2bSJakub Kicinski if (!swap) 1118d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1119d9ae7f2bSJakub Kicinski reg_a(reg + 1), ALU_OP_SUB_C, tmp_reg); 1120d9ae7f2bSJakub Kicinski else 1121d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1122d9ae7f2bSJakub Kicinski tmp_reg, ALU_OP_SUB_C, reg_a(reg + 1)); 1123d9ae7f2bSJakub Kicinski 1124d9ae7f2bSJakub Kicinski emit_br(nfp_prog, br_mask, insn->off, 0); 1125d9ae7f2bSJakub Kicinski 1126d9ae7f2bSJakub Kicinski return 0; 1127d9ae7f2bSJakub Kicinski } 1128d9ae7f2bSJakub Kicinski 1129d9ae7f2bSJakub Kicinski static int 1130d9ae7f2bSJakub Kicinski wrp_cmp_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1131d9ae7f2bSJakub Kicinski enum br_mask br_mask, bool swap) 1132d9ae7f2bSJakub Kicinski { 1133d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 113426fa818dSJakub Kicinski u8 areg, breg; 113526fa818dSJakub Kicinski 113626fa818dSJakub Kicinski areg = insn->dst_reg * 2; 113726fa818dSJakub Kicinski breg = insn->src_reg * 2; 1138d9ae7f2bSJakub Kicinski 1139d9ae7f2bSJakub Kicinski if (swap) { 1140d9ae7f2bSJakub Kicinski areg ^= breg; 1141d9ae7f2bSJakub Kicinski breg ^= areg; 1142d9ae7f2bSJakub Kicinski areg ^= breg; 1143d9ae7f2bSJakub Kicinski } 1144d9ae7f2bSJakub Kicinski 1145d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(areg), ALU_OP_SUB, reg_b(breg)); 1146d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1147d9ae7f2bSJakub Kicinski reg_a(areg + 1), ALU_OP_SUB_C, reg_b(breg + 1)); 1148d9ae7f2bSJakub Kicinski emit_br(nfp_prog, br_mask, insn->off, 0); 1149d9ae7f2bSJakub Kicinski 1150d9ae7f2bSJakub Kicinski return 0; 1151d9ae7f2bSJakub Kicinski } 1152d9ae7f2bSJakub Kicinski 11533119d1fdSJakub Kicinski static void wrp_end32(struct nfp_prog *nfp_prog, swreg reg_in, u8 gpr_out) 11543119d1fdSJakub Kicinski { 11553119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr_out), 0xf, reg_in, 11563119d1fdSJakub Kicinski SHF_SC_R_ROT, 8); 11573119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr_out), 0x5, reg_a(gpr_out), 11583119d1fdSJakub Kicinski SHF_SC_R_ROT, 16); 11593119d1fdSJakub Kicinski } 11603119d1fdSJakub Kicinski 1161d9ae7f2bSJakub Kicinski /* --- Callbacks --- */ 1162d9ae7f2bSJakub Kicinski static int mov_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1163d9ae7f2bSJakub Kicinski { 1164d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1165b14157eeSJakub Kicinski u8 dst = insn->dst_reg * 2; 1166b14157eeSJakub Kicinski u8 src = insn->src_reg * 2; 1167d9ae7f2bSJakub Kicinski 1168b14157eeSJakub Kicinski if (insn->src_reg == BPF_REG_10) { 1169b14157eeSJakub Kicinski swreg stack_depth_reg; 1170b14157eeSJakub Kicinski 1171b14157eeSJakub Kicinski stack_depth_reg = ur_load_imm_any(nfp_prog, 1172b14157eeSJakub Kicinski nfp_prog->stack_depth, 1173b14157eeSJakub Kicinski stack_imm(nfp_prog)); 1174b14157eeSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), 1175b14157eeSJakub Kicinski stack_reg(nfp_prog), ALU_OP_ADD, stack_depth_reg); 1176b14157eeSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst + 1), 0); 1177b14157eeSJakub Kicinski } else { 1178b14157eeSJakub Kicinski wrp_reg_mov(nfp_prog, dst, src); 1179b14157eeSJakub Kicinski wrp_reg_mov(nfp_prog, dst + 1, src + 1); 1180b14157eeSJakub Kicinski } 1181d9ae7f2bSJakub Kicinski 1182d9ae7f2bSJakub Kicinski return 0; 1183d9ae7f2bSJakub Kicinski } 1184d9ae7f2bSJakub Kicinski 1185d9ae7f2bSJakub Kicinski static int mov_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1186d9ae7f2bSJakub Kicinski { 1187d9ae7f2bSJakub Kicinski u64 imm = meta->insn.imm; /* sign extend */ 1188d9ae7f2bSJakub Kicinski 1189d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2), imm & ~0U); 1190d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), imm >> 32); 1191d9ae7f2bSJakub Kicinski 1192d9ae7f2bSJakub Kicinski return 0; 1193d9ae7f2bSJakub Kicinski } 1194d9ae7f2bSJakub Kicinski 1195d9ae7f2bSJakub Kicinski static int xor_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1196d9ae7f2bSJakub Kicinski { 1197d9ae7f2bSJakub Kicinski return wrp_alu64_reg(nfp_prog, meta, ALU_OP_XOR); 1198d9ae7f2bSJakub Kicinski } 1199d9ae7f2bSJakub Kicinski 1200d9ae7f2bSJakub Kicinski static int xor_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1201d9ae7f2bSJakub Kicinski { 1202d9ae7f2bSJakub Kicinski return wrp_alu64_imm(nfp_prog, meta, ALU_OP_XOR, !meta->insn.imm); 1203d9ae7f2bSJakub Kicinski } 1204d9ae7f2bSJakub Kicinski 1205d9ae7f2bSJakub Kicinski static int and_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1206d9ae7f2bSJakub Kicinski { 1207d9ae7f2bSJakub Kicinski return wrp_alu64_reg(nfp_prog, meta, ALU_OP_AND); 1208d9ae7f2bSJakub Kicinski } 1209d9ae7f2bSJakub Kicinski 1210d9ae7f2bSJakub Kicinski static int and_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1211d9ae7f2bSJakub Kicinski { 1212d9ae7f2bSJakub Kicinski return wrp_alu64_imm(nfp_prog, meta, ALU_OP_AND, !~meta->insn.imm); 1213d9ae7f2bSJakub Kicinski } 1214d9ae7f2bSJakub Kicinski 1215d9ae7f2bSJakub Kicinski static int or_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1216d9ae7f2bSJakub Kicinski { 1217d9ae7f2bSJakub Kicinski return wrp_alu64_reg(nfp_prog, meta, ALU_OP_OR); 1218d9ae7f2bSJakub Kicinski } 1219d9ae7f2bSJakub Kicinski 1220d9ae7f2bSJakub Kicinski static int or_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1221d9ae7f2bSJakub Kicinski { 1222d9ae7f2bSJakub Kicinski return wrp_alu64_imm(nfp_prog, meta, ALU_OP_OR, !meta->insn.imm); 1223d9ae7f2bSJakub Kicinski } 1224d9ae7f2bSJakub Kicinski 1225d9ae7f2bSJakub Kicinski static int add_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1226d9ae7f2bSJakub Kicinski { 1227d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1228d9ae7f2bSJakub Kicinski 1229d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2), 1230d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_ADD, 1231d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2)); 1232d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 1233d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_ADD_C, 1234d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2 + 1)); 1235d9ae7f2bSJakub Kicinski 1236d9ae7f2bSJakub Kicinski return 0; 1237d9ae7f2bSJakub Kicinski } 1238d9ae7f2bSJakub Kicinski 1239d9ae7f2bSJakub Kicinski static int add_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1240d9ae7f2bSJakub Kicinski { 1241d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1242d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1243d9ae7f2bSJakub Kicinski 1244d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, ALU_OP_ADD, imm & ~0U); 1245d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2 + 1, ALU_OP_ADD_C, imm >> 32); 1246d9ae7f2bSJakub Kicinski 1247d9ae7f2bSJakub Kicinski return 0; 1248d9ae7f2bSJakub Kicinski } 1249d9ae7f2bSJakub Kicinski 1250d9ae7f2bSJakub Kicinski static int sub_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1251d9ae7f2bSJakub Kicinski { 1252d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1253d9ae7f2bSJakub Kicinski 1254d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2), 1255d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_SUB, 1256d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2)); 1257d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 1258d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_SUB_C, 1259d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2 + 1)); 1260d9ae7f2bSJakub Kicinski 1261d9ae7f2bSJakub Kicinski return 0; 1262d9ae7f2bSJakub Kicinski } 1263d9ae7f2bSJakub Kicinski 1264d9ae7f2bSJakub Kicinski static int sub_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1265d9ae7f2bSJakub Kicinski { 1266d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1267d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1268d9ae7f2bSJakub Kicinski 1269d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, ALU_OP_SUB, imm & ~0U); 1270d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2 + 1, ALU_OP_SUB_C, imm >> 32); 1271d9ae7f2bSJakub Kicinski 1272d9ae7f2bSJakub Kicinski return 0; 1273d9ae7f2bSJakub Kicinski } 1274d9ae7f2bSJakub Kicinski 1275254ef4d7SJiong Wang static int neg_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1276254ef4d7SJiong Wang { 1277254ef4d7SJiong Wang const struct bpf_insn *insn = &meta->insn; 1278254ef4d7SJiong Wang 1279254ef4d7SJiong Wang emit_alu(nfp_prog, reg_both(insn->dst_reg * 2), reg_imm(0), 1280254ef4d7SJiong Wang ALU_OP_SUB, reg_b(insn->dst_reg * 2)); 1281254ef4d7SJiong Wang emit_alu(nfp_prog, reg_both(insn->dst_reg * 2 + 1), reg_imm(0), 1282254ef4d7SJiong Wang ALU_OP_SUB_C, reg_b(insn->dst_reg * 2 + 1)); 1283254ef4d7SJiong Wang 1284254ef4d7SJiong Wang return 0; 1285254ef4d7SJiong Wang } 1286254ef4d7SJiong Wang 1287d9ae7f2bSJakub Kicinski static int shl_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1288d9ae7f2bSJakub Kicinski { 1289d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 12903cae1319SJakub Kicinski u8 dst = insn->dst_reg * 2; 1291d9ae7f2bSJakub Kicinski 12923cae1319SJakub Kicinski if (insn->imm < 32) { 12933cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst + 1), 12943cae1319SJakub Kicinski reg_a(dst + 1), SHF_OP_NONE, reg_b(dst), 12953cae1319SJakub Kicinski SHF_SC_R_DSHF, 32 - insn->imm); 12963cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst), 12973cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst), 12983cae1319SJakub Kicinski SHF_SC_L_SHF, insn->imm); 12993cae1319SJakub Kicinski } else if (insn->imm == 32) { 13003cae1319SJakub Kicinski wrp_reg_mov(nfp_prog, dst + 1, dst); 13013cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), 0); 13023cae1319SJakub Kicinski } else if (insn->imm > 32) { 13033cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst + 1), 13043cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst), 13053cae1319SJakub Kicinski SHF_SC_L_SHF, insn->imm - 32); 13063cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), 0); 13073cae1319SJakub Kicinski } 1308d9ae7f2bSJakub Kicinski 1309d9ae7f2bSJakub Kicinski return 0; 1310d9ae7f2bSJakub Kicinski } 1311d9ae7f2bSJakub Kicinski 1312d9ae7f2bSJakub Kicinski static int shr_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1313d9ae7f2bSJakub Kicinski { 1314d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 13153cae1319SJakub Kicinski u8 dst = insn->dst_reg * 2; 1316d9ae7f2bSJakub Kicinski 13173cae1319SJakub Kicinski if (insn->imm < 32) { 13183cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst), 13193cae1319SJakub Kicinski reg_a(dst + 1), SHF_OP_NONE, reg_b(dst), 13203cae1319SJakub Kicinski SHF_SC_R_DSHF, insn->imm); 13213cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst + 1), 13223cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst + 1), 13233cae1319SJakub Kicinski SHF_SC_R_SHF, insn->imm); 13243cae1319SJakub Kicinski } else if (insn->imm == 32) { 13253cae1319SJakub Kicinski wrp_reg_mov(nfp_prog, dst, dst + 1); 13263cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst + 1), 0); 13273cae1319SJakub Kicinski } else if (insn->imm > 32) { 13283cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst), 13293cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst + 1), 13303cae1319SJakub Kicinski SHF_SC_R_SHF, insn->imm - 32); 13313cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst + 1), 0); 13323cae1319SJakub Kicinski } 1333d9ae7f2bSJakub Kicinski 1334d9ae7f2bSJakub Kicinski return 0; 1335d9ae7f2bSJakub Kicinski } 1336d9ae7f2bSJakub Kicinski 1337d9ae7f2bSJakub Kicinski static int mov_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1338d9ae7f2bSJakub Kicinski { 1339d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1340d9ae7f2bSJakub Kicinski 1341d9ae7f2bSJakub Kicinski wrp_reg_mov(nfp_prog, insn->dst_reg * 2, insn->src_reg * 2); 1342d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 1343d9ae7f2bSJakub Kicinski 1344d9ae7f2bSJakub Kicinski return 0; 1345d9ae7f2bSJakub Kicinski } 1346d9ae7f2bSJakub Kicinski 1347d9ae7f2bSJakub Kicinski static int mov_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1348d9ae7f2bSJakub Kicinski { 1349d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1350d9ae7f2bSJakub Kicinski 1351d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2), insn->imm); 1352d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 1353d9ae7f2bSJakub Kicinski 1354d9ae7f2bSJakub Kicinski return 0; 1355d9ae7f2bSJakub Kicinski } 1356d9ae7f2bSJakub Kicinski 1357d9ae7f2bSJakub Kicinski static int xor_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1358d9ae7f2bSJakub Kicinski { 1359d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_XOR); 1360d9ae7f2bSJakub Kicinski } 1361d9ae7f2bSJakub Kicinski 1362d9ae7f2bSJakub Kicinski static int xor_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1363d9ae7f2bSJakub Kicinski { 1364d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_XOR, !~meta->insn.imm); 1365d9ae7f2bSJakub Kicinski } 1366d9ae7f2bSJakub Kicinski 1367d9ae7f2bSJakub Kicinski static int and_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1368d9ae7f2bSJakub Kicinski { 1369d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_AND); 1370d9ae7f2bSJakub Kicinski } 1371d9ae7f2bSJakub Kicinski 1372d9ae7f2bSJakub Kicinski static int and_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1373d9ae7f2bSJakub Kicinski { 1374d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_AND, !~meta->insn.imm); 1375d9ae7f2bSJakub Kicinski } 1376d9ae7f2bSJakub Kicinski 1377d9ae7f2bSJakub Kicinski static int or_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1378d9ae7f2bSJakub Kicinski { 1379d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_OR); 1380d9ae7f2bSJakub Kicinski } 1381d9ae7f2bSJakub Kicinski 1382d9ae7f2bSJakub Kicinski static int or_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1383d9ae7f2bSJakub Kicinski { 1384d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_OR, !meta->insn.imm); 1385d9ae7f2bSJakub Kicinski } 1386d9ae7f2bSJakub Kicinski 1387d9ae7f2bSJakub Kicinski static int add_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1388d9ae7f2bSJakub Kicinski { 1389d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_ADD); 1390d9ae7f2bSJakub Kicinski } 1391d9ae7f2bSJakub Kicinski 1392d9ae7f2bSJakub Kicinski static int add_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1393d9ae7f2bSJakub Kicinski { 1394d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_ADD, !meta->insn.imm); 1395d9ae7f2bSJakub Kicinski } 1396d9ae7f2bSJakub Kicinski 1397d9ae7f2bSJakub Kicinski static int sub_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1398d9ae7f2bSJakub Kicinski { 1399d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_SUB); 1400d9ae7f2bSJakub Kicinski } 1401d9ae7f2bSJakub Kicinski 1402d9ae7f2bSJakub Kicinski static int sub_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1403d9ae7f2bSJakub Kicinski { 1404d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_SUB, !meta->insn.imm); 1405d9ae7f2bSJakub Kicinski } 1406d9ae7f2bSJakub Kicinski 1407254ef4d7SJiong Wang static int neg_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1408254ef4d7SJiong Wang { 1409254ef4d7SJiong Wang u8 dst = meta->insn.dst_reg * 2; 1410254ef4d7SJiong Wang 1411254ef4d7SJiong Wang emit_alu(nfp_prog, reg_both(dst), reg_imm(0), ALU_OP_SUB, reg_b(dst)); 1412254ef4d7SJiong Wang wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 1413254ef4d7SJiong Wang 1414254ef4d7SJiong Wang return 0; 1415254ef4d7SJiong Wang } 1416254ef4d7SJiong Wang 1417d9ae7f2bSJakub Kicinski static int shl_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1418d9ae7f2bSJakub Kicinski { 1419d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1420d9ae7f2bSJakub Kicinski 1421d9ae7f2bSJakub Kicinski if (!insn->imm) 1422d9ae7f2bSJakub Kicinski return 1; /* TODO: zero shift means indirect */ 1423d9ae7f2bSJakub Kicinski 1424d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_both(insn->dst_reg * 2), 1425d9ae7f2bSJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(insn->dst_reg * 2), 1426d9ae7f2bSJakub Kicinski SHF_SC_L_SHF, insn->imm); 1427d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 1428d9ae7f2bSJakub Kicinski 1429d9ae7f2bSJakub Kicinski return 0; 1430d9ae7f2bSJakub Kicinski } 1431d9ae7f2bSJakub Kicinski 14323119d1fdSJakub Kicinski static int end_reg32(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 14333119d1fdSJakub Kicinski { 14343119d1fdSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 14353119d1fdSJakub Kicinski u8 gpr = insn->dst_reg * 2; 14363119d1fdSJakub Kicinski 14373119d1fdSJakub Kicinski switch (insn->imm) { 14383119d1fdSJakub Kicinski case 16: 14393119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr), 0x9, reg_b(gpr), 14403119d1fdSJakub Kicinski SHF_SC_R_ROT, 8); 14413119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr), 0xe, reg_a(gpr), 14423119d1fdSJakub Kicinski SHF_SC_R_SHF, 16); 14433119d1fdSJakub Kicinski 14443119d1fdSJakub Kicinski wrp_immed(nfp_prog, reg_both(gpr + 1), 0); 14453119d1fdSJakub Kicinski break; 14463119d1fdSJakub Kicinski case 32: 14473119d1fdSJakub Kicinski wrp_end32(nfp_prog, reg_a(gpr), gpr); 14483119d1fdSJakub Kicinski wrp_immed(nfp_prog, reg_both(gpr + 1), 0); 14493119d1fdSJakub Kicinski break; 14503119d1fdSJakub Kicinski case 64: 14513119d1fdSJakub Kicinski wrp_mov(nfp_prog, imm_a(nfp_prog), reg_b(gpr + 1)); 14523119d1fdSJakub Kicinski 14533119d1fdSJakub Kicinski wrp_end32(nfp_prog, reg_a(gpr), gpr + 1); 14543119d1fdSJakub Kicinski wrp_end32(nfp_prog, imm_a(nfp_prog), gpr); 14553119d1fdSJakub Kicinski break; 14563119d1fdSJakub Kicinski } 14573119d1fdSJakub Kicinski 14583119d1fdSJakub Kicinski return 0; 14593119d1fdSJakub Kicinski } 14603119d1fdSJakub Kicinski 1461d9ae7f2bSJakub Kicinski static int imm_ld8_part2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1462d9ae7f2bSJakub Kicinski { 14639f16c8abSJakub Kicinski struct nfp_insn_meta *prev = nfp_meta_prev(meta); 14649f16c8abSJakub Kicinski u32 imm_lo, imm_hi; 14659f16c8abSJakub Kicinski u8 dst; 14669f16c8abSJakub Kicinski 14679f16c8abSJakub Kicinski dst = prev->insn.dst_reg * 2; 14689f16c8abSJakub Kicinski imm_lo = prev->insn.imm; 14699f16c8abSJakub Kicinski imm_hi = meta->insn.imm; 14709f16c8abSJakub Kicinski 14719f16c8abSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), imm_lo); 14729f16c8abSJakub Kicinski 14739f16c8abSJakub Kicinski /* mov is always 1 insn, load imm may be two, so try to use mov */ 14749f16c8abSJakub Kicinski if (imm_hi == imm_lo) 14759f16c8abSJakub Kicinski wrp_mov(nfp_prog, reg_both(dst + 1), reg_a(dst)); 14769f16c8abSJakub Kicinski else 14779f16c8abSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst + 1), imm_hi); 1478d9ae7f2bSJakub Kicinski 1479d9ae7f2bSJakub Kicinski return 0; 1480d9ae7f2bSJakub Kicinski } 1481d9ae7f2bSJakub Kicinski 1482d9ae7f2bSJakub Kicinski static int imm_ld8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1483d9ae7f2bSJakub Kicinski { 1484d9ae7f2bSJakub Kicinski meta->double_cb = imm_ld8_part2; 1485d9ae7f2bSJakub Kicinski return 0; 1486d9ae7f2bSJakub Kicinski } 1487d9ae7f2bSJakub Kicinski 1488d9ae7f2bSJakub Kicinski static int data_ld1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1489d9ae7f2bSJakub Kicinski { 1490d9ae7f2bSJakub Kicinski return construct_data_ld(nfp_prog, meta->insn.imm, 1); 1491d9ae7f2bSJakub Kicinski } 1492d9ae7f2bSJakub Kicinski 1493d9ae7f2bSJakub Kicinski static int data_ld2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1494d9ae7f2bSJakub Kicinski { 1495d9ae7f2bSJakub Kicinski return construct_data_ld(nfp_prog, meta->insn.imm, 2); 1496d9ae7f2bSJakub Kicinski } 1497d9ae7f2bSJakub Kicinski 1498d9ae7f2bSJakub Kicinski static int data_ld4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1499d9ae7f2bSJakub Kicinski { 1500d9ae7f2bSJakub Kicinski return construct_data_ld(nfp_prog, meta->insn.imm, 4); 1501d9ae7f2bSJakub Kicinski } 1502d9ae7f2bSJakub Kicinski 1503d9ae7f2bSJakub Kicinski static int data_ind_ld1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1504d9ae7f2bSJakub Kicinski { 1505d9ae7f2bSJakub Kicinski return construct_data_ind_ld(nfp_prog, meta->insn.imm, 15060a793977SJakub Kicinski meta->insn.src_reg * 2, 1); 1507d9ae7f2bSJakub Kicinski } 1508d9ae7f2bSJakub Kicinski 1509d9ae7f2bSJakub Kicinski static int data_ind_ld2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1510d9ae7f2bSJakub Kicinski { 1511d9ae7f2bSJakub Kicinski return construct_data_ind_ld(nfp_prog, meta->insn.imm, 15120a793977SJakub Kicinski meta->insn.src_reg * 2, 2); 1513d9ae7f2bSJakub Kicinski } 1514d9ae7f2bSJakub Kicinski 1515d9ae7f2bSJakub Kicinski static int data_ind_ld4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1516d9ae7f2bSJakub Kicinski { 1517d9ae7f2bSJakub Kicinski return construct_data_ind_ld(nfp_prog, meta->insn.imm, 15180a793977SJakub Kicinski meta->insn.src_reg * 2, 4); 1519d9ae7f2bSJakub Kicinski } 1520d9ae7f2bSJakub Kicinski 1521a82b23fbSJakub Kicinski static int 1522a82b23fbSJakub Kicinski mem_ldx_stack(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1523d3488480SJakub Kicinski unsigned int size, unsigned int ptr_off) 1524a82b23fbSJakub Kicinski { 1525d3488480SJakub Kicinski return mem_op_stack(nfp_prog, meta, size, ptr_off, 1526b14157eeSJakub Kicinski meta->insn.dst_reg * 2, meta->insn.src_reg * 2, 1527b14157eeSJakub Kicinski true, wrp_lmem_load); 1528a82b23fbSJakub Kicinski } 1529a82b23fbSJakub Kicinski 1530943c57b9SJakub Kicinski static int mem_ldx_skb(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1531943c57b9SJakub Kicinski u8 size) 1532d9ae7f2bSJakub Kicinski { 1533bfddbc8aSJakub Kicinski swreg dst = reg_both(meta->insn.dst_reg * 2); 1534bfddbc8aSJakub Kicinski 1535943c57b9SJakub Kicinski switch (meta->insn.off) { 1536c6c580d7SJakub Kicinski case offsetof(struct __sk_buff, len): 1537c6c580d7SJakub Kicinski if (size != FIELD_SIZEOF(struct __sk_buff, len)) 1538943c57b9SJakub Kicinski return -EOPNOTSUPP; 1539bfddbc8aSJakub Kicinski wrp_mov(nfp_prog, dst, plen_reg(nfp_prog)); 1540bfddbc8aSJakub Kicinski break; 1541c6c580d7SJakub Kicinski case offsetof(struct __sk_buff, data): 1542c6c580d7SJakub Kicinski if (size != FIELD_SIZEOF(struct __sk_buff, data)) 1543bfddbc8aSJakub Kicinski return -EOPNOTSUPP; 1544bfddbc8aSJakub Kicinski wrp_mov(nfp_prog, dst, pptr_reg(nfp_prog)); 1545bfddbc8aSJakub Kicinski break; 1546c6c580d7SJakub Kicinski case offsetof(struct __sk_buff, data_end): 1547c6c580d7SJakub Kicinski if (size != FIELD_SIZEOF(struct __sk_buff, data_end)) 1548bfddbc8aSJakub Kicinski return -EOPNOTSUPP; 1549bfddbc8aSJakub Kicinski emit_alu(nfp_prog, dst, 1550bfddbc8aSJakub Kicinski plen_reg(nfp_prog), ALU_OP_ADD, pptr_reg(nfp_prog)); 1551943c57b9SJakub Kicinski break; 1552943c57b9SJakub Kicinski default: 1553d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1554943c57b9SJakub Kicinski } 1555943c57b9SJakub Kicinski 1556943c57b9SJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 1557d9ae7f2bSJakub Kicinski 1558d9ae7f2bSJakub Kicinski return 0; 1559d9ae7f2bSJakub Kicinski } 1560d9ae7f2bSJakub Kicinski 1561943c57b9SJakub Kicinski static int mem_ldx_xdp(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1562943c57b9SJakub Kicinski u8 size) 1563d9ae7f2bSJakub Kicinski { 1564b3f868dfSJakub Kicinski swreg dst = reg_both(meta->insn.dst_reg * 2); 1565d9ae7f2bSJakub Kicinski 1566943c57b9SJakub Kicinski switch (meta->insn.off) { 1567c6c580d7SJakub Kicinski case offsetof(struct xdp_md, data): 1568c6c580d7SJakub Kicinski if (size != FIELD_SIZEOF(struct xdp_md, data)) 1569c6c580d7SJakub Kicinski return -EOPNOTSUPP; 1570c000dfb5SJakub Kicinski wrp_mov(nfp_prog, dst, pptr_reg(nfp_prog)); 1571943c57b9SJakub Kicinski break; 1572c6c580d7SJakub Kicinski case offsetof(struct xdp_md, data_end): 1573c6c580d7SJakub Kicinski if (size != FIELD_SIZEOF(struct xdp_md, data_end)) 1574c6c580d7SJakub Kicinski return -EOPNOTSUPP; 1575943c57b9SJakub Kicinski emit_alu(nfp_prog, dst, 1576943c57b9SJakub Kicinski plen_reg(nfp_prog), ALU_OP_ADD, pptr_reg(nfp_prog)); 1577943c57b9SJakub Kicinski break; 1578943c57b9SJakub Kicinski default: 1579943c57b9SJakub Kicinski return -EOPNOTSUPP; 1580943c57b9SJakub Kicinski } 1581d9ae7f2bSJakub Kicinski 1582943c57b9SJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 1583d9ae7f2bSJakub Kicinski 1584d9ae7f2bSJakub Kicinski return 0; 1585d9ae7f2bSJakub Kicinski } 1586d9ae7f2bSJakub Kicinski 15872ca71441SJakub Kicinski static int 15882ca71441SJakub Kicinski mem_ldx_data(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 15892ca71441SJakub Kicinski unsigned int size) 15902ca71441SJakub Kicinski { 15912ca71441SJakub Kicinski swreg tmp_reg; 15922ca71441SJakub Kicinski 15932ca71441SJakub Kicinski tmp_reg = re_load_imm_any(nfp_prog, meta->insn.off, imm_b(nfp_prog)); 15942ca71441SJakub Kicinski 15952ca71441SJakub Kicinski return data_ld_host_order(nfp_prog, meta->insn.src_reg * 2, tmp_reg, 15962ca71441SJakub Kicinski meta->insn.dst_reg * 2, size); 15972ca71441SJakub Kicinski } 15982ca71441SJakub Kicinski 15992ca71441SJakub Kicinski static int 16002ca71441SJakub Kicinski mem_ldx(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 16012ca71441SJakub Kicinski unsigned int size) 16022ca71441SJakub Kicinski { 16039879a381SJiong Wang if (meta->ldst_gather_len) 16049879a381SJiong Wang return nfp_cpp_memcpy(nfp_prog, meta); 16059879a381SJiong Wang 16062ca71441SJakub Kicinski if (meta->ptr.type == PTR_TO_CTX) { 1607012bb8a8SJakub Kicinski if (nfp_prog->type == BPF_PROG_TYPE_XDP) 16082ca71441SJakub Kicinski return mem_ldx_xdp(nfp_prog, meta, size); 16092ca71441SJakub Kicinski else 16102ca71441SJakub Kicinski return mem_ldx_skb(nfp_prog, meta, size); 16112ca71441SJakub Kicinski } 16122ca71441SJakub Kicinski 16132ca71441SJakub Kicinski if (meta->ptr.type == PTR_TO_PACKET) 16142ca71441SJakub Kicinski return mem_ldx_data(nfp_prog, meta, size); 16152ca71441SJakub Kicinski 1616a82b23fbSJakub Kicinski if (meta->ptr.type == PTR_TO_STACK) 1617d3488480SJakub Kicinski return mem_ldx_stack(nfp_prog, meta, size, 1618d3488480SJakub Kicinski meta->ptr.off + meta->ptr.var_off.value); 1619a82b23fbSJakub Kicinski 16202ca71441SJakub Kicinski return -EOPNOTSUPP; 16212ca71441SJakub Kicinski } 16222ca71441SJakub Kicinski 16232ca71441SJakub Kicinski static int mem_ldx1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 16242ca71441SJakub Kicinski { 16252ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 1); 16262ca71441SJakub Kicinski } 16272ca71441SJakub Kicinski 16282ca71441SJakub Kicinski static int mem_ldx2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 16292ca71441SJakub Kicinski { 16302ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 2); 16312ca71441SJakub Kicinski } 16322ca71441SJakub Kicinski 1633d9ae7f2bSJakub Kicinski static int mem_ldx4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1634d9ae7f2bSJakub Kicinski { 16352ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 4); 16362ca71441SJakub Kicinski } 16372ca71441SJakub Kicinski 16382ca71441SJakub Kicinski static int mem_ldx8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 16392ca71441SJakub Kicinski { 16402ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 8); 1641d9ae7f2bSJakub Kicinski } 1642d9ae7f2bSJakub Kicinski 1643e663fe38SJakub Kicinski static int 1644e663fe38SJakub Kicinski mem_st_data(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1645e663fe38SJakub Kicinski unsigned int size) 1646d9ae7f2bSJakub Kicinski { 1647e663fe38SJakub Kicinski u64 imm = meta->insn.imm; /* sign extend */ 1648e663fe38SJakub Kicinski swreg off_reg; 1649e663fe38SJakub Kicinski 1650e663fe38SJakub Kicinski off_reg = re_load_imm_any(nfp_prog, meta->insn.off, imm_b(nfp_prog)); 1651e663fe38SJakub Kicinski 1652e663fe38SJakub Kicinski return data_st_host_order(nfp_prog, meta->insn.dst_reg * 2, off_reg, 1653e663fe38SJakub Kicinski imm, size); 1654e663fe38SJakub Kicinski } 1655e663fe38SJakub Kicinski 1656e663fe38SJakub Kicinski static int mem_st(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1657e663fe38SJakub Kicinski unsigned int size) 1658e663fe38SJakub Kicinski { 1659e663fe38SJakub Kicinski if (meta->ptr.type == PTR_TO_PACKET) 1660e663fe38SJakub Kicinski return mem_st_data(nfp_prog, meta, size); 1661e663fe38SJakub Kicinski 1662d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1663d9ae7f2bSJakub Kicinski } 1664d9ae7f2bSJakub Kicinski 1665e663fe38SJakub Kicinski static int mem_st1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1666d9ae7f2bSJakub Kicinski { 1667e663fe38SJakub Kicinski return mem_st(nfp_prog, meta, 1); 1668e663fe38SJakub Kicinski } 1669e663fe38SJakub Kicinski 1670e663fe38SJakub Kicinski static int mem_st2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1671e663fe38SJakub Kicinski { 1672e663fe38SJakub Kicinski return mem_st(nfp_prog, meta, 2); 1673e663fe38SJakub Kicinski } 1674e663fe38SJakub Kicinski 1675e663fe38SJakub Kicinski static int mem_st4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1676e663fe38SJakub Kicinski { 1677e663fe38SJakub Kicinski return mem_st(nfp_prog, meta, 4); 1678e663fe38SJakub Kicinski } 1679e663fe38SJakub Kicinski 1680e663fe38SJakub Kicinski static int mem_st8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1681e663fe38SJakub Kicinski { 1682e663fe38SJakub Kicinski return mem_st(nfp_prog, meta, 8); 1683e663fe38SJakub Kicinski } 1684e663fe38SJakub Kicinski 1685e663fe38SJakub Kicinski static int 1686e663fe38SJakub Kicinski mem_stx_data(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1687e663fe38SJakub Kicinski unsigned int size) 1688e663fe38SJakub Kicinski { 1689e663fe38SJakub Kicinski swreg off_reg; 1690e663fe38SJakub Kicinski 1691e663fe38SJakub Kicinski off_reg = re_load_imm_any(nfp_prog, meta->insn.off, imm_b(nfp_prog)); 1692e663fe38SJakub Kicinski 1693e663fe38SJakub Kicinski return data_stx_host_order(nfp_prog, meta->insn.dst_reg * 2, off_reg, 1694e663fe38SJakub Kicinski meta->insn.src_reg * 2, size); 1695e663fe38SJakub Kicinski } 1696e663fe38SJakub Kicinski 1697e663fe38SJakub Kicinski static int 1698ee9133a8SJakub Kicinski mem_stx_stack(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1699d3488480SJakub Kicinski unsigned int size, unsigned int ptr_off) 1700ee9133a8SJakub Kicinski { 1701d3488480SJakub Kicinski return mem_op_stack(nfp_prog, meta, size, ptr_off, 1702b14157eeSJakub Kicinski meta->insn.src_reg * 2, meta->insn.dst_reg * 2, 1703b14157eeSJakub Kicinski false, wrp_lmem_store); 1704ee9133a8SJakub Kicinski } 1705ee9133a8SJakub Kicinski 1706ee9133a8SJakub Kicinski static int 1707e663fe38SJakub Kicinski mem_stx(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1708e663fe38SJakub Kicinski unsigned int size) 1709e663fe38SJakub Kicinski { 1710e663fe38SJakub Kicinski if (meta->ptr.type == PTR_TO_PACKET) 1711e663fe38SJakub Kicinski return mem_stx_data(nfp_prog, meta, size); 1712e663fe38SJakub Kicinski 1713ee9133a8SJakub Kicinski if (meta->ptr.type == PTR_TO_STACK) 1714d3488480SJakub Kicinski return mem_stx_stack(nfp_prog, meta, size, 1715d3488480SJakub Kicinski meta->ptr.off + meta->ptr.var_off.value); 1716ee9133a8SJakub Kicinski 1717d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1718d9ae7f2bSJakub Kicinski } 1719d9ae7f2bSJakub Kicinski 1720e663fe38SJakub Kicinski static int mem_stx1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1721e663fe38SJakub Kicinski { 1722e663fe38SJakub Kicinski return mem_stx(nfp_prog, meta, 1); 1723e663fe38SJakub Kicinski } 1724e663fe38SJakub Kicinski 1725e663fe38SJakub Kicinski static int mem_stx2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1726e663fe38SJakub Kicinski { 1727e663fe38SJakub Kicinski return mem_stx(nfp_prog, meta, 2); 1728e663fe38SJakub Kicinski } 1729e663fe38SJakub Kicinski 1730d9ae7f2bSJakub Kicinski static int mem_stx4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1731d9ae7f2bSJakub Kicinski { 1732e663fe38SJakub Kicinski return mem_stx(nfp_prog, meta, 4); 1733e663fe38SJakub Kicinski } 17342ca71441SJakub Kicinski 1735e663fe38SJakub Kicinski static int mem_stx8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1736e663fe38SJakub Kicinski { 1737e663fe38SJakub Kicinski return mem_stx(nfp_prog, meta, 8); 1738d9ae7f2bSJakub Kicinski } 1739d9ae7f2bSJakub Kicinski 1740d9ae7f2bSJakub Kicinski static int jump(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1741d9ae7f2bSJakub Kicinski { 1742d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_UNC, meta->insn.off, 0); 1743d9ae7f2bSJakub Kicinski 1744d9ae7f2bSJakub Kicinski return 0; 1745d9ae7f2bSJakub Kicinski } 1746d9ae7f2bSJakub Kicinski 1747d9ae7f2bSJakub Kicinski static int jeq_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1748d9ae7f2bSJakub Kicinski { 1749d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1750d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1751b3f868dfSJakub Kicinski swreg or1, or2, tmp_reg; 1752b3f868dfSJakub Kicinski 1753b3f868dfSJakub Kicinski or1 = reg_a(insn->dst_reg * 2); 1754b3f868dfSJakub Kicinski or2 = reg_b(insn->dst_reg * 2 + 1); 1755d9ae7f2bSJakub Kicinski 1756d9ae7f2bSJakub Kicinski if (imm & ~0U) { 1757d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 1758d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_a(nfp_prog), 1759d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_XOR, tmp_reg); 1760d9ae7f2bSJakub Kicinski or1 = imm_a(nfp_prog); 1761d9ae7f2bSJakub Kicinski } 1762d9ae7f2bSJakub Kicinski 1763d9ae7f2bSJakub Kicinski if (imm >> 32) { 1764d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 1765d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), 1766d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_XOR, tmp_reg); 1767d9ae7f2bSJakub Kicinski or2 = imm_b(nfp_prog); 1768d9ae7f2bSJakub Kicinski } 1769d9ae7f2bSJakub Kicinski 1770d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), or1, ALU_OP_OR, or2); 1771d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BEQ, insn->off, 0); 1772d9ae7f2bSJakub Kicinski 1773d9ae7f2bSJakub Kicinski return 0; 1774d9ae7f2bSJakub Kicinski } 1775d9ae7f2bSJakub Kicinski 1776d9ae7f2bSJakub Kicinski static int jgt_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1777d9ae7f2bSJakub Kicinski { 177826fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BLO, true); 1779d9ae7f2bSJakub Kicinski } 1780d9ae7f2bSJakub Kicinski 1781d9ae7f2bSJakub Kicinski static int jge_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1782d9ae7f2bSJakub Kicinski { 178326fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BHS, false); 1784d9ae7f2bSJakub Kicinski } 1785d9ae7f2bSJakub Kicinski 17865dd294d4SDaniel Borkmann static int jlt_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 17875dd294d4SDaniel Borkmann { 178826fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BLO, false); 17895dd294d4SDaniel Borkmann } 17905dd294d4SDaniel Borkmann 17915dd294d4SDaniel Borkmann static int jle_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 17925dd294d4SDaniel Borkmann { 179326fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BHS, true); 17945dd294d4SDaniel Borkmann } 17955dd294d4SDaniel Borkmann 1796d9ae7f2bSJakub Kicinski static int jset_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1797d9ae7f2bSJakub Kicinski { 1798d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1799d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1800b3f868dfSJakub Kicinski swreg tmp_reg; 1801d9ae7f2bSJakub Kicinski 1802d9ae7f2bSJakub Kicinski if (!imm) { 1803d9ae7f2bSJakub Kicinski meta->skip = true; 1804d9ae7f2bSJakub Kicinski return 0; 1805d9ae7f2bSJakub Kicinski } 1806d9ae7f2bSJakub Kicinski 1807d9ae7f2bSJakub Kicinski if (imm & ~0U) { 1808d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 1809d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1810d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_AND, tmp_reg); 1811d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1812d9ae7f2bSJakub Kicinski } 1813d9ae7f2bSJakub Kicinski 1814d9ae7f2bSJakub Kicinski if (imm >> 32) { 1815d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 1816d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1817d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_AND, tmp_reg); 1818d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1819d9ae7f2bSJakub Kicinski } 1820d9ae7f2bSJakub Kicinski 1821d9ae7f2bSJakub Kicinski return 0; 1822d9ae7f2bSJakub Kicinski } 1823d9ae7f2bSJakub Kicinski 1824d9ae7f2bSJakub Kicinski static int jne_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1825d9ae7f2bSJakub Kicinski { 1826d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1827d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1828b3f868dfSJakub Kicinski swreg tmp_reg; 1829d9ae7f2bSJakub Kicinski 1830d9ae7f2bSJakub Kicinski if (!imm) { 1831d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(insn->dst_reg * 2), 1832d9ae7f2bSJakub Kicinski ALU_OP_OR, reg_b(insn->dst_reg * 2 + 1)); 1833d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 183482837370SJakub Kicinski return 0; 1835d9ae7f2bSJakub Kicinski } 1836d9ae7f2bSJakub Kicinski 1837d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 1838d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1839d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_XOR, tmp_reg); 1840d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1841d9ae7f2bSJakub Kicinski 1842d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 1843d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1844d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_XOR, tmp_reg); 1845d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1846d9ae7f2bSJakub Kicinski 1847d9ae7f2bSJakub Kicinski return 0; 1848d9ae7f2bSJakub Kicinski } 1849d9ae7f2bSJakub Kicinski 1850d9ae7f2bSJakub Kicinski static int jeq_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1851d9ae7f2bSJakub Kicinski { 1852d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1853d9ae7f2bSJakub Kicinski 1854d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_a(nfp_prog), reg_a(insn->dst_reg * 2), 1855d9ae7f2bSJakub Kicinski ALU_OP_XOR, reg_b(insn->src_reg * 2)); 1856d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), reg_a(insn->dst_reg * 2 + 1), 1857d9ae7f2bSJakub Kicinski ALU_OP_XOR, reg_b(insn->src_reg * 2 + 1)); 1858d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1859d9ae7f2bSJakub Kicinski imm_a(nfp_prog), ALU_OP_OR, imm_b(nfp_prog)); 1860d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BEQ, insn->off, 0); 1861d9ae7f2bSJakub Kicinski 1862d9ae7f2bSJakub Kicinski return 0; 1863d9ae7f2bSJakub Kicinski } 1864d9ae7f2bSJakub Kicinski 1865d9ae7f2bSJakub Kicinski static int jgt_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1866d9ae7f2bSJakub Kicinski { 186726fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BLO, true); 1868d9ae7f2bSJakub Kicinski } 1869d9ae7f2bSJakub Kicinski 1870d9ae7f2bSJakub Kicinski static int jge_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1871d9ae7f2bSJakub Kicinski { 187226fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BHS, false); 1873d9ae7f2bSJakub Kicinski } 1874d9ae7f2bSJakub Kicinski 18755dd294d4SDaniel Borkmann static int jlt_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 18765dd294d4SDaniel Borkmann { 187726fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BLO, false); 18785dd294d4SDaniel Borkmann } 18795dd294d4SDaniel Borkmann 18805dd294d4SDaniel Borkmann static int jle_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 18815dd294d4SDaniel Borkmann { 188226fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BHS, true); 18835dd294d4SDaniel Borkmann } 18845dd294d4SDaniel Borkmann 1885d9ae7f2bSJakub Kicinski static int jset_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1886d9ae7f2bSJakub Kicinski { 1887d9ae7f2bSJakub Kicinski return wrp_test_reg(nfp_prog, meta, ALU_OP_AND, BR_BNE); 1888d9ae7f2bSJakub Kicinski } 1889d9ae7f2bSJakub Kicinski 1890d9ae7f2bSJakub Kicinski static int jne_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1891d9ae7f2bSJakub Kicinski { 1892d9ae7f2bSJakub Kicinski return wrp_test_reg(nfp_prog, meta, ALU_OP_XOR, BR_BNE); 1893d9ae7f2bSJakub Kicinski } 1894d9ae7f2bSJakub Kicinski 1895d9ae7f2bSJakub Kicinski static int goto_out(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1896d9ae7f2bSJakub Kicinski { 1897d9ae7f2bSJakub Kicinski wrp_br_special(nfp_prog, BR_UNC, OP_BR_GO_OUT); 1898d9ae7f2bSJakub Kicinski 1899d9ae7f2bSJakub Kicinski return 0; 1900d9ae7f2bSJakub Kicinski } 1901d9ae7f2bSJakub Kicinski 1902d9ae7f2bSJakub Kicinski static const instr_cb_t instr_cb[256] = { 1903d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_MOV | BPF_X] = mov_reg64, 1904d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_MOV | BPF_K] = mov_imm64, 1905d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_XOR | BPF_X] = xor_reg64, 1906d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_XOR | BPF_K] = xor_imm64, 1907d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_AND | BPF_X] = and_reg64, 1908d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_AND | BPF_K] = and_imm64, 1909d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_OR | BPF_X] = or_reg64, 1910d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_OR | BPF_K] = or_imm64, 1911d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_ADD | BPF_X] = add_reg64, 1912d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_ADD | BPF_K] = add_imm64, 1913d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_SUB | BPF_X] = sub_reg64, 1914d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_SUB | BPF_K] = sub_imm64, 1915254ef4d7SJiong Wang [BPF_ALU64 | BPF_NEG] = neg_reg64, 1916d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_LSH | BPF_K] = shl_imm64, 1917d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_RSH | BPF_K] = shr_imm64, 1918d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_MOV | BPF_X] = mov_reg, 1919d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_MOV | BPF_K] = mov_imm, 1920d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_XOR | BPF_X] = xor_reg, 1921d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_XOR | BPF_K] = xor_imm, 1922d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_AND | BPF_X] = and_reg, 1923d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_AND | BPF_K] = and_imm, 1924d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_OR | BPF_X] = or_reg, 1925d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_OR | BPF_K] = or_imm, 1926d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_ADD | BPF_X] = add_reg, 1927d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_ADD | BPF_K] = add_imm, 1928d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_SUB | BPF_X] = sub_reg, 1929d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_SUB | BPF_K] = sub_imm, 1930254ef4d7SJiong Wang [BPF_ALU | BPF_NEG] = neg_reg, 1931d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_LSH | BPF_K] = shl_imm, 19323119d1fdSJakub Kicinski [BPF_ALU | BPF_END | BPF_X] = end_reg32, 1933d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IMM | BPF_DW] = imm_ld8, 1934d9ae7f2bSJakub Kicinski [BPF_LD | BPF_ABS | BPF_B] = data_ld1, 1935d9ae7f2bSJakub Kicinski [BPF_LD | BPF_ABS | BPF_H] = data_ld2, 1936d9ae7f2bSJakub Kicinski [BPF_LD | BPF_ABS | BPF_W] = data_ld4, 1937d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IND | BPF_B] = data_ind_ld1, 1938d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IND | BPF_H] = data_ind_ld2, 1939d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IND | BPF_W] = data_ind_ld4, 19402ca71441SJakub Kicinski [BPF_LDX | BPF_MEM | BPF_B] = mem_ldx1, 19412ca71441SJakub Kicinski [BPF_LDX | BPF_MEM | BPF_H] = mem_ldx2, 1942d9ae7f2bSJakub Kicinski [BPF_LDX | BPF_MEM | BPF_W] = mem_ldx4, 19432ca71441SJakub Kicinski [BPF_LDX | BPF_MEM | BPF_DW] = mem_ldx8, 1944e663fe38SJakub Kicinski [BPF_STX | BPF_MEM | BPF_B] = mem_stx1, 1945e663fe38SJakub Kicinski [BPF_STX | BPF_MEM | BPF_H] = mem_stx2, 1946d9ae7f2bSJakub Kicinski [BPF_STX | BPF_MEM | BPF_W] = mem_stx4, 1947e663fe38SJakub Kicinski [BPF_STX | BPF_MEM | BPF_DW] = mem_stx8, 1948e663fe38SJakub Kicinski [BPF_ST | BPF_MEM | BPF_B] = mem_st1, 1949e663fe38SJakub Kicinski [BPF_ST | BPF_MEM | BPF_H] = mem_st2, 1950e663fe38SJakub Kicinski [BPF_ST | BPF_MEM | BPF_W] = mem_st4, 1951e663fe38SJakub Kicinski [BPF_ST | BPF_MEM | BPF_DW] = mem_st8, 1952d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JA | BPF_K] = jump, 1953d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JEQ | BPF_K] = jeq_imm, 1954d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGT | BPF_K] = jgt_imm, 1955d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGE | BPF_K] = jge_imm, 19565dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLT | BPF_K] = jlt_imm, 19575dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLE | BPF_K] = jle_imm, 1958d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JSET | BPF_K] = jset_imm, 1959d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JNE | BPF_K] = jne_imm, 1960d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JEQ | BPF_X] = jeq_reg, 1961d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGT | BPF_X] = jgt_reg, 1962d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGE | BPF_X] = jge_reg, 19635dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLT | BPF_X] = jlt_reg, 19645dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLE | BPF_X] = jle_reg, 1965d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JSET | BPF_X] = jset_reg, 1966d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JNE | BPF_X] = jne_reg, 1967d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_EXIT] = goto_out, 1968d9ae7f2bSJakub Kicinski }; 1969d9ae7f2bSJakub Kicinski 1970d9ae7f2bSJakub Kicinski /* --- Misc code --- */ 1971d9ae7f2bSJakub Kicinski static void br_set_offset(u64 *instr, u16 offset) 1972d9ae7f2bSJakub Kicinski { 1973d9ae7f2bSJakub Kicinski u16 addr_lo, addr_hi; 1974d9ae7f2bSJakub Kicinski 1975d9ae7f2bSJakub Kicinski addr_lo = offset & (OP_BR_ADDR_LO >> __bf_shf(OP_BR_ADDR_LO)); 1976d9ae7f2bSJakub Kicinski addr_hi = offset != addr_lo; 1977d9ae7f2bSJakub Kicinski *instr &= ~(OP_BR_ADDR_HI | OP_BR_ADDR_LO); 1978d9ae7f2bSJakub Kicinski *instr |= FIELD_PREP(OP_BR_ADDR_HI, addr_hi); 1979d9ae7f2bSJakub Kicinski *instr |= FIELD_PREP(OP_BR_ADDR_LO, addr_lo); 1980d9ae7f2bSJakub Kicinski } 1981d9ae7f2bSJakub Kicinski 1982d9ae7f2bSJakub Kicinski /* --- Assembler logic --- */ 1983d9ae7f2bSJakub Kicinski static int nfp_fixup_branches(struct nfp_prog *nfp_prog) 1984d9ae7f2bSJakub Kicinski { 19855b674140SJiong Wang struct nfp_insn_meta *meta, *jmp_dst; 1986854dc87dSJiong Wang u32 idx, br_idx; 1987d9ae7f2bSJakub Kicinski 1988854dc87dSJiong Wang list_for_each_entry(meta, &nfp_prog->insns, l) { 1989d9ae7f2bSJakub Kicinski if (meta->skip) 1990d9ae7f2bSJakub Kicinski continue; 1991d9ae7f2bSJakub Kicinski if (BPF_CLASS(meta->insn.code) != BPF_JMP) 1992d9ae7f2bSJakub Kicinski continue; 1993d9ae7f2bSJakub Kicinski 19945b674140SJiong Wang if (list_is_last(&meta->l, &nfp_prog->insns)) 1995854dc87dSJiong Wang idx = nfp_prog->last_bpf_off; 19965b674140SJiong Wang else 19975b674140SJiong Wang idx = list_next_entry(meta, l)->off - 1; 1998854dc87dSJiong Wang 1999854dc87dSJiong Wang br_idx = nfp_prog_offset_to_index(nfp_prog, idx); 2000854dc87dSJiong Wang 2001d9ae7f2bSJakub Kicinski if (!nfp_is_br(nfp_prog->prog[br_idx])) { 2002d9ae7f2bSJakub Kicinski pr_err("Fixup found block not ending in branch %d %02x %016llx!!\n", 2003d9ae7f2bSJakub Kicinski br_idx, meta->insn.code, nfp_prog->prog[br_idx]); 2004d9ae7f2bSJakub Kicinski return -ELOOP; 2005d9ae7f2bSJakub Kicinski } 2006d9ae7f2bSJakub Kicinski /* Leave special branches for later */ 2007d9ae7f2bSJakub Kicinski if (FIELD_GET(OP_BR_SPECIAL, nfp_prog->prog[br_idx])) 2008d9ae7f2bSJakub Kicinski continue; 2009d9ae7f2bSJakub Kicinski 20105b674140SJiong Wang if (!meta->jmp_dst) { 20115b674140SJiong Wang pr_err("Non-exit jump doesn't have destination info recorded!!\n"); 2012d9ae7f2bSJakub Kicinski return -ELOOP; 2013d9ae7f2bSJakub Kicinski } 2014d9ae7f2bSJakub Kicinski 20155b674140SJiong Wang jmp_dst = meta->jmp_dst; 2016854dc87dSJiong Wang 20175b674140SJiong Wang if (jmp_dst->skip) { 2018d9ae7f2bSJakub Kicinski pr_err("Branch landing on removed instruction!!\n"); 2019d9ae7f2bSJakub Kicinski return -ELOOP; 2020d9ae7f2bSJakub Kicinski } 2021d9ae7f2bSJakub Kicinski 2022d9ae7f2bSJakub Kicinski for (idx = nfp_prog_offset_to_index(nfp_prog, meta->off); 2023d9ae7f2bSJakub Kicinski idx <= br_idx; idx++) { 2024d9ae7f2bSJakub Kicinski if (!nfp_is_br(nfp_prog->prog[idx])) 2025d9ae7f2bSJakub Kicinski continue; 20265b674140SJiong Wang br_set_offset(&nfp_prog->prog[idx], jmp_dst->off); 2027d9ae7f2bSJakub Kicinski } 2028d9ae7f2bSJakub Kicinski } 2029d9ae7f2bSJakub Kicinski 2030d9ae7f2bSJakub Kicinski /* Fixup 'goto out's separately, they can be scattered around */ 2031d9ae7f2bSJakub Kicinski for (br_idx = 0; br_idx < nfp_prog->prog_len; br_idx++) { 2032d9ae7f2bSJakub Kicinski enum br_special special; 2033d9ae7f2bSJakub Kicinski 2034d9ae7f2bSJakub Kicinski if ((nfp_prog->prog[br_idx] & OP_BR_BASE_MASK) != OP_BR_BASE) 2035d9ae7f2bSJakub Kicinski continue; 2036d9ae7f2bSJakub Kicinski 2037d9ae7f2bSJakub Kicinski special = FIELD_GET(OP_BR_SPECIAL, nfp_prog->prog[br_idx]); 2038d9ae7f2bSJakub Kicinski switch (special) { 2039d9ae7f2bSJakub Kicinski case OP_BR_NORMAL: 2040d9ae7f2bSJakub Kicinski break; 2041d9ae7f2bSJakub Kicinski case OP_BR_GO_OUT: 2042d9ae7f2bSJakub Kicinski br_set_offset(&nfp_prog->prog[br_idx], 2043d9ae7f2bSJakub Kicinski nfp_prog->tgt_out); 2044d9ae7f2bSJakub Kicinski break; 2045d9ae7f2bSJakub Kicinski case OP_BR_GO_ABORT: 2046d9ae7f2bSJakub Kicinski br_set_offset(&nfp_prog->prog[br_idx], 2047d9ae7f2bSJakub Kicinski nfp_prog->tgt_abort); 2048d9ae7f2bSJakub Kicinski break; 2049d9ae7f2bSJakub Kicinski } 2050d9ae7f2bSJakub Kicinski 2051d9ae7f2bSJakub Kicinski nfp_prog->prog[br_idx] &= ~OP_BR_SPECIAL; 2052d9ae7f2bSJakub Kicinski } 2053d9ae7f2bSJakub Kicinski 2054d9ae7f2bSJakub Kicinski return 0; 2055d9ae7f2bSJakub Kicinski } 2056d9ae7f2bSJakub Kicinski 2057d9ae7f2bSJakub Kicinski static void nfp_intro(struct nfp_prog *nfp_prog) 2058d9ae7f2bSJakub Kicinski { 205918e53b6cSJakub Kicinski wrp_immed(nfp_prog, plen_reg(nfp_prog), GENMASK(13, 0)); 206018e53b6cSJakub Kicinski emit_alu(nfp_prog, plen_reg(nfp_prog), 206118e53b6cSJakub Kicinski plen_reg(nfp_prog), ALU_OP_AND, pv_len(nfp_prog)); 2062d9ae7f2bSJakub Kicinski } 2063d9ae7f2bSJakub Kicinski 2064d9ae7f2bSJakub Kicinski static void nfp_outro_tc_da(struct nfp_prog *nfp_prog) 2065d9ae7f2bSJakub Kicinski { 2066d9ae7f2bSJakub Kicinski /* TC direct-action mode: 2067d9ae7f2bSJakub Kicinski * 0,1 ok NOT SUPPORTED[1] 2068d9ae7f2bSJakub Kicinski * 2 drop 0x22 -> drop, count as stat1 2069d9ae7f2bSJakub Kicinski * 4,5 nuke 0x02 -> drop 2070d9ae7f2bSJakub Kicinski * 7 redir 0x44 -> redir, count as stat2 2071d9ae7f2bSJakub Kicinski * * unspec 0x11 -> pass, count as stat0 2072d9ae7f2bSJakub Kicinski * 2073d9ae7f2bSJakub Kicinski * [1] We can't support OK and RECLASSIFY because we can't tell TC 2074d9ae7f2bSJakub Kicinski * the exact decision made. We are forced to support UNSPEC 2075d9ae7f2bSJakub Kicinski * to handle aborts so that's the only one we handle for passing 2076d9ae7f2bSJakub Kicinski * packets up the stack. 2077d9ae7f2bSJakub Kicinski */ 2078d9ae7f2bSJakub Kicinski /* Target for aborts */ 2079d9ae7f2bSJakub Kicinski nfp_prog->tgt_abort = nfp_prog_current_offset(nfp_prog); 2080d9ae7f2bSJakub Kicinski 2081d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 2082d9ae7f2bSJakub Kicinski 2083c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 2084d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_imm(0x11), SHF_SC_L_SHF, 16); 2085d9ae7f2bSJakub Kicinski 2086d9ae7f2bSJakub Kicinski /* Target for normal exits */ 2087d9ae7f2bSJakub Kicinski nfp_prog->tgt_out = nfp_prog_current_offset(nfp_prog); 2088d9ae7f2bSJakub Kicinski 2089d9ae7f2bSJakub Kicinski /* if R0 > 7 jump to abort */ 2090d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_imm(7), ALU_OP_SUB, reg_b(0)); 2091d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BLO, nfp_prog->tgt_abort, 0); 2092c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 2093d9ae7f2bSJakub Kicinski 2094d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_b(2), 0x41221211); 2095d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_b(3), 0x41001211); 2096d9ae7f2bSJakub Kicinski 2097d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_a(1), 2098d9ae7f2bSJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(0), SHF_SC_L_SHF, 2); 2099d9ae7f2bSJakub Kicinski 2100d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(1), ALU_OP_OR, reg_imm(0)); 2101d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_a(2), 2102d9ae7f2bSJakub Kicinski reg_imm(0xf), SHF_OP_AND, reg_b(2), SHF_SC_R_SHF, 0); 2103d9ae7f2bSJakub Kicinski 2104d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(1), ALU_OP_OR, reg_imm(0)); 2105d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_b(2), 2106d9ae7f2bSJakub Kicinski reg_imm(0xf), SHF_OP_AND, reg_b(3), SHF_SC_R_SHF, 0); 2107d9ae7f2bSJakub Kicinski 2108d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 2109d9ae7f2bSJakub Kicinski 2110d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_b(2), 2111d9ae7f2bSJakub Kicinski reg_a(2), SHF_OP_OR, reg_b(2), SHF_SC_L_SHF, 4); 2112d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_b(2), SHF_SC_L_SHF, 16); 2113d9ae7f2bSJakub Kicinski } 2114d9ae7f2bSJakub Kicinski 2115d9ae7f2bSJakub Kicinski static void nfp_outro_xdp(struct nfp_prog *nfp_prog) 2116d9ae7f2bSJakub Kicinski { 2117d9ae7f2bSJakub Kicinski /* XDP return codes: 2118d9ae7f2bSJakub Kicinski * 0 aborted 0x82 -> drop, count as stat3 2119d9ae7f2bSJakub Kicinski * 1 drop 0x22 -> drop, count as stat1 2120d9ae7f2bSJakub Kicinski * 2 pass 0x11 -> pass, count as stat0 2121d9ae7f2bSJakub Kicinski * 3 tx 0x44 -> redir, count as stat2 2122d9ae7f2bSJakub Kicinski * * unknown 0x82 -> drop, count as stat3 2123d9ae7f2bSJakub Kicinski */ 2124d9ae7f2bSJakub Kicinski /* Target for aborts */ 2125d9ae7f2bSJakub Kicinski nfp_prog->tgt_abort = nfp_prog_current_offset(nfp_prog); 2126d9ae7f2bSJakub Kicinski 2127d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 2128d9ae7f2bSJakub Kicinski 2129c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 2130d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_imm(0x82), SHF_SC_L_SHF, 16); 2131d9ae7f2bSJakub Kicinski 2132d9ae7f2bSJakub Kicinski /* Target for normal exits */ 2133d9ae7f2bSJakub Kicinski nfp_prog->tgt_out = nfp_prog_current_offset(nfp_prog); 2134d9ae7f2bSJakub Kicinski 2135d9ae7f2bSJakub Kicinski /* if R0 > 3 jump to abort */ 2136d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_imm(3), ALU_OP_SUB, reg_b(0)); 2137d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BLO, nfp_prog->tgt_abort, 0); 2138d9ae7f2bSJakub Kicinski 2139d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_b(2), 0x44112282); 2140d9ae7f2bSJakub Kicinski 2141d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_a(1), 2142d9ae7f2bSJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(0), SHF_SC_L_SHF, 3); 2143d9ae7f2bSJakub Kicinski 2144d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(1), ALU_OP_OR, reg_imm(0)); 2145d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_b(2), 2146d9ae7f2bSJakub Kicinski reg_imm(0xff), SHF_OP_AND, reg_b(2), SHF_SC_R_SHF, 0); 2147d9ae7f2bSJakub Kicinski 2148d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 2149d9ae7f2bSJakub Kicinski 2150c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 2151d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_b(2), SHF_SC_L_SHF, 16); 2152d9ae7f2bSJakub Kicinski } 2153d9ae7f2bSJakub Kicinski 2154d9ae7f2bSJakub Kicinski static void nfp_outro(struct nfp_prog *nfp_prog) 2155d9ae7f2bSJakub Kicinski { 2156012bb8a8SJakub Kicinski switch (nfp_prog->type) { 2157012bb8a8SJakub Kicinski case BPF_PROG_TYPE_SCHED_CLS: 2158d9ae7f2bSJakub Kicinski nfp_outro_tc_da(nfp_prog); 2159d9ae7f2bSJakub Kicinski break; 2160012bb8a8SJakub Kicinski case BPF_PROG_TYPE_XDP: 2161d9ae7f2bSJakub Kicinski nfp_outro_xdp(nfp_prog); 2162d9ae7f2bSJakub Kicinski break; 2163012bb8a8SJakub Kicinski default: 2164012bb8a8SJakub Kicinski WARN_ON(1); 2165d9ae7f2bSJakub Kicinski } 2166d9ae7f2bSJakub Kicinski } 2167d9ae7f2bSJakub Kicinski 2168d9ae7f2bSJakub Kicinski static int nfp_translate(struct nfp_prog *nfp_prog) 2169d9ae7f2bSJakub Kicinski { 2170d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta; 2171ff42bb9fSJakub Kicinski int err; 2172d9ae7f2bSJakub Kicinski 2173d9ae7f2bSJakub Kicinski nfp_intro(nfp_prog); 2174d9ae7f2bSJakub Kicinski if (nfp_prog->error) 2175d9ae7f2bSJakub Kicinski return nfp_prog->error; 2176d9ae7f2bSJakub Kicinski 2177d9ae7f2bSJakub Kicinski list_for_each_entry(meta, &nfp_prog->insns, l) { 2178d9ae7f2bSJakub Kicinski instr_cb_t cb = instr_cb[meta->insn.code]; 2179d9ae7f2bSJakub Kicinski 2180d9ae7f2bSJakub Kicinski meta->off = nfp_prog_current_offset(nfp_prog); 2181d9ae7f2bSJakub Kicinski 2182d9ae7f2bSJakub Kicinski if (meta->skip) { 2183d9ae7f2bSJakub Kicinski nfp_prog->n_translated++; 2184d9ae7f2bSJakub Kicinski continue; 2185d9ae7f2bSJakub Kicinski } 2186d9ae7f2bSJakub Kicinski 2187d9ae7f2bSJakub Kicinski if (nfp_meta_has_prev(nfp_prog, meta) && 2188d9ae7f2bSJakub Kicinski nfp_meta_prev(meta)->double_cb) 2189d9ae7f2bSJakub Kicinski cb = nfp_meta_prev(meta)->double_cb; 2190d9ae7f2bSJakub Kicinski if (!cb) 2191d9ae7f2bSJakub Kicinski return -ENOENT; 2192d9ae7f2bSJakub Kicinski err = cb(nfp_prog, meta); 2193d9ae7f2bSJakub Kicinski if (err) 2194d9ae7f2bSJakub Kicinski return err; 2195d9ae7f2bSJakub Kicinski 2196d9ae7f2bSJakub Kicinski nfp_prog->n_translated++; 2197d9ae7f2bSJakub Kicinski } 2198d9ae7f2bSJakub Kicinski 2199854dc87dSJiong Wang nfp_prog->last_bpf_off = nfp_prog_current_offset(nfp_prog) - 1; 2200854dc87dSJiong Wang 2201d9ae7f2bSJakub Kicinski nfp_outro(nfp_prog); 2202d9ae7f2bSJakub Kicinski if (nfp_prog->error) 2203d9ae7f2bSJakub Kicinski return nfp_prog->error; 2204d9ae7f2bSJakub Kicinski 2205ff42bb9fSJakub Kicinski wrp_nops(nfp_prog, NFP_USTORE_PREFETCH_WINDOW); 22061c03e03fSJakub Kicinski if (nfp_prog->error) 22071c03e03fSJakub Kicinski return nfp_prog->error; 22081c03e03fSJakub Kicinski 2209d9ae7f2bSJakub Kicinski return nfp_fixup_branches(nfp_prog); 2210d9ae7f2bSJakub Kicinski } 2211d9ae7f2bSJakub Kicinski 2212d9ae7f2bSJakub Kicinski /* --- Optimizations --- */ 2213d9ae7f2bSJakub Kicinski static void nfp_bpf_opt_reg_init(struct nfp_prog *nfp_prog) 2214d9ae7f2bSJakub Kicinski { 2215d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta; 2216d9ae7f2bSJakub Kicinski 2217d9ae7f2bSJakub Kicinski list_for_each_entry(meta, &nfp_prog->insns, l) { 2218d9ae7f2bSJakub Kicinski struct bpf_insn insn = meta->insn; 2219d9ae7f2bSJakub Kicinski 2220d9ae7f2bSJakub Kicinski /* Programs converted from cBPF start with register xoring */ 2221d9ae7f2bSJakub Kicinski if (insn.code == (BPF_ALU64 | BPF_XOR | BPF_X) && 2222d9ae7f2bSJakub Kicinski insn.src_reg == insn.dst_reg) 2223d9ae7f2bSJakub Kicinski continue; 2224d9ae7f2bSJakub Kicinski 2225d9ae7f2bSJakub Kicinski /* Programs start with R6 = R1 but we ignore the skb pointer */ 2226d9ae7f2bSJakub Kicinski if (insn.code == (BPF_ALU64 | BPF_MOV | BPF_X) && 2227d9ae7f2bSJakub Kicinski insn.src_reg == 1 && insn.dst_reg == 6) 2228d9ae7f2bSJakub Kicinski meta->skip = true; 2229d9ae7f2bSJakub Kicinski 2230d9ae7f2bSJakub Kicinski /* Return as soon as something doesn't match */ 2231d9ae7f2bSJakub Kicinski if (!meta->skip) 2232d9ae7f2bSJakub Kicinski return; 2233d9ae7f2bSJakub Kicinski } 2234d9ae7f2bSJakub Kicinski } 2235d9ae7f2bSJakub Kicinski 2236d9ae7f2bSJakub Kicinski /* Remove masking after load since our load guarantees this is not needed */ 2237d9ae7f2bSJakub Kicinski static void nfp_bpf_opt_ld_mask(struct nfp_prog *nfp_prog) 2238d9ae7f2bSJakub Kicinski { 2239d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta1, *meta2; 2240d9ae7f2bSJakub Kicinski const s32 exp_mask[] = { 2241d9ae7f2bSJakub Kicinski [BPF_B] = 0x000000ffU, 2242d9ae7f2bSJakub Kicinski [BPF_H] = 0x0000ffffU, 2243d9ae7f2bSJakub Kicinski [BPF_W] = 0xffffffffU, 2244d9ae7f2bSJakub Kicinski }; 2245d9ae7f2bSJakub Kicinski 2246d9ae7f2bSJakub Kicinski nfp_for_each_insn_walk2(nfp_prog, meta1, meta2) { 2247d9ae7f2bSJakub Kicinski struct bpf_insn insn, next; 2248d9ae7f2bSJakub Kicinski 2249d9ae7f2bSJakub Kicinski insn = meta1->insn; 2250d9ae7f2bSJakub Kicinski next = meta2->insn; 2251d9ae7f2bSJakub Kicinski 2252d9ae7f2bSJakub Kicinski if (BPF_CLASS(insn.code) != BPF_LD) 2253d9ae7f2bSJakub Kicinski continue; 2254d9ae7f2bSJakub Kicinski if (BPF_MODE(insn.code) != BPF_ABS && 2255d9ae7f2bSJakub Kicinski BPF_MODE(insn.code) != BPF_IND) 2256d9ae7f2bSJakub Kicinski continue; 2257d9ae7f2bSJakub Kicinski 2258d9ae7f2bSJakub Kicinski if (next.code != (BPF_ALU64 | BPF_AND | BPF_K)) 2259d9ae7f2bSJakub Kicinski continue; 2260d9ae7f2bSJakub Kicinski 2261d9ae7f2bSJakub Kicinski if (!exp_mask[BPF_SIZE(insn.code)]) 2262d9ae7f2bSJakub Kicinski continue; 2263d9ae7f2bSJakub Kicinski if (exp_mask[BPF_SIZE(insn.code)] != next.imm) 2264d9ae7f2bSJakub Kicinski continue; 2265d9ae7f2bSJakub Kicinski 2266d9ae7f2bSJakub Kicinski if (next.src_reg || next.dst_reg) 2267d9ae7f2bSJakub Kicinski continue; 2268d9ae7f2bSJakub Kicinski 22691266f5d6SJiong Wang if (meta2->flags & FLAG_INSN_IS_JUMP_DST) 22701266f5d6SJiong Wang continue; 22711266f5d6SJiong Wang 2272d9ae7f2bSJakub Kicinski meta2->skip = true; 2273d9ae7f2bSJakub Kicinski } 2274d9ae7f2bSJakub Kicinski } 2275d9ae7f2bSJakub Kicinski 2276d9ae7f2bSJakub Kicinski static void nfp_bpf_opt_ld_shift(struct nfp_prog *nfp_prog) 2277d9ae7f2bSJakub Kicinski { 2278d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta1, *meta2, *meta3; 2279d9ae7f2bSJakub Kicinski 2280d9ae7f2bSJakub Kicinski nfp_for_each_insn_walk3(nfp_prog, meta1, meta2, meta3) { 2281d9ae7f2bSJakub Kicinski struct bpf_insn insn, next1, next2; 2282d9ae7f2bSJakub Kicinski 2283d9ae7f2bSJakub Kicinski insn = meta1->insn; 2284d9ae7f2bSJakub Kicinski next1 = meta2->insn; 2285d9ae7f2bSJakub Kicinski next2 = meta3->insn; 2286d9ae7f2bSJakub Kicinski 2287d9ae7f2bSJakub Kicinski if (BPF_CLASS(insn.code) != BPF_LD) 2288d9ae7f2bSJakub Kicinski continue; 2289d9ae7f2bSJakub Kicinski if (BPF_MODE(insn.code) != BPF_ABS && 2290d9ae7f2bSJakub Kicinski BPF_MODE(insn.code) != BPF_IND) 2291d9ae7f2bSJakub Kicinski continue; 2292d9ae7f2bSJakub Kicinski if (BPF_SIZE(insn.code) != BPF_W) 2293d9ae7f2bSJakub Kicinski continue; 2294d9ae7f2bSJakub Kicinski 2295d9ae7f2bSJakub Kicinski if (!(next1.code == (BPF_LSH | BPF_K | BPF_ALU64) && 2296d9ae7f2bSJakub Kicinski next2.code == (BPF_RSH | BPF_K | BPF_ALU64)) && 2297d9ae7f2bSJakub Kicinski !(next1.code == (BPF_RSH | BPF_K | BPF_ALU64) && 2298d9ae7f2bSJakub Kicinski next2.code == (BPF_LSH | BPF_K | BPF_ALU64))) 2299d9ae7f2bSJakub Kicinski continue; 2300d9ae7f2bSJakub Kicinski 2301d9ae7f2bSJakub Kicinski if (next1.src_reg || next1.dst_reg || 2302d9ae7f2bSJakub Kicinski next2.src_reg || next2.dst_reg) 2303d9ae7f2bSJakub Kicinski continue; 2304d9ae7f2bSJakub Kicinski 2305d9ae7f2bSJakub Kicinski if (next1.imm != 0x20 || next2.imm != 0x20) 2306d9ae7f2bSJakub Kicinski continue; 2307d9ae7f2bSJakub Kicinski 230829fe46efSJiong Wang if (meta2->flags & FLAG_INSN_IS_JUMP_DST || 230929fe46efSJiong Wang meta3->flags & FLAG_INSN_IS_JUMP_DST) 231029fe46efSJiong Wang continue; 231129fe46efSJiong Wang 2312d9ae7f2bSJakub Kicinski meta2->skip = true; 2313d9ae7f2bSJakub Kicinski meta3->skip = true; 2314d9ae7f2bSJakub Kicinski } 2315d9ae7f2bSJakub Kicinski } 2316d9ae7f2bSJakub Kicinski 2317d9ae7f2bSJakub Kicinski static int nfp_bpf_optimize(struct nfp_prog *nfp_prog) 2318d9ae7f2bSJakub Kicinski { 2319d9ae7f2bSJakub Kicinski nfp_bpf_opt_reg_init(nfp_prog); 2320d9ae7f2bSJakub Kicinski 2321d9ae7f2bSJakub Kicinski nfp_bpf_opt_ld_mask(nfp_prog); 2322d9ae7f2bSJakub Kicinski nfp_bpf_opt_ld_shift(nfp_prog); 2323d9ae7f2bSJakub Kicinski 2324d9ae7f2bSJakub Kicinski return 0; 2325d9ae7f2bSJakub Kicinski } 2326d9ae7f2bSJakub Kicinski 23272e85d388SJakub Kicinski static int nfp_bpf_ustore_calc(struct nfp_prog *nfp_prog, __le64 *ustore) 2328fd068ddcSJakub Kicinski { 2329fd068ddcSJakub Kicinski int i; 2330fd068ddcSJakub Kicinski 2331fd068ddcSJakub Kicinski for (i = 0; i < nfp_prog->prog_len; i++) { 2332fd068ddcSJakub Kicinski int err; 2333fd068ddcSJakub Kicinski 2334fd068ddcSJakub Kicinski err = nfp_ustore_check_valid_no_ecc(nfp_prog->prog[i]); 2335fd068ddcSJakub Kicinski if (err) 2336fd068ddcSJakub Kicinski return err; 2337fd068ddcSJakub Kicinski 2338fd068ddcSJakub Kicinski nfp_prog->prog[i] = nfp_ustore_calc_ecc_insn(nfp_prog->prog[i]); 23392e85d388SJakub Kicinski 23402e85d388SJakub Kicinski ustore[i] = cpu_to_le64(nfp_prog->prog[i]); 2341fd068ddcSJakub Kicinski } 2342fd068ddcSJakub Kicinski 2343fd068ddcSJakub Kicinski return 0; 2344fd068ddcSJakub Kicinski } 2345fd068ddcSJakub Kicinski 2346c6c580d7SJakub Kicinski int nfp_bpf_jit(struct nfp_prog *nfp_prog) 2347d9ae7f2bSJakub Kicinski { 2348d9ae7f2bSJakub Kicinski int ret; 2349d9ae7f2bSJakub Kicinski 2350d9ae7f2bSJakub Kicinski ret = nfp_bpf_optimize(nfp_prog); 2351d9ae7f2bSJakub Kicinski if (ret) 23529314c442SJakub Kicinski return ret; 2353d9ae7f2bSJakub Kicinski 2354d9ae7f2bSJakub Kicinski ret = nfp_translate(nfp_prog); 2355d9ae7f2bSJakub Kicinski if (ret) { 2356d9ae7f2bSJakub Kicinski pr_err("Translation failed with error %d (translated: %u)\n", 2357d9ae7f2bSJakub Kicinski ret, nfp_prog->n_translated); 23589314c442SJakub Kicinski return -EINVAL; 2359d9ae7f2bSJakub Kicinski } 2360d9ae7f2bSJakub Kicinski 23619314c442SJakub Kicinski return nfp_bpf_ustore_calc(nfp_prog, (__force __le64 *)nfp_prog->prog); 2362d9ae7f2bSJakub Kicinski } 2363