1d9ae7f2bSJakub Kicinski /* 2d9ae7f2bSJakub Kicinski * Copyright (C) 2016 Netronome Systems, Inc. 3d9ae7f2bSJakub Kicinski * 4d9ae7f2bSJakub Kicinski * This software is dual licensed under the GNU General License Version 2, 5d9ae7f2bSJakub Kicinski * June 1991 as shown in the file COPYING in the top-level directory of this 6d9ae7f2bSJakub Kicinski * source tree or the BSD 2-Clause License provided below. You have the 7d9ae7f2bSJakub Kicinski * option to license this software under the complete terms of either license. 8d9ae7f2bSJakub Kicinski * 9d9ae7f2bSJakub Kicinski * The BSD 2-Clause License: 10d9ae7f2bSJakub Kicinski * 11d9ae7f2bSJakub Kicinski * Redistribution and use in source and binary forms, with or 12d9ae7f2bSJakub Kicinski * without modification, are permitted provided that the following 13d9ae7f2bSJakub Kicinski * conditions are met: 14d9ae7f2bSJakub Kicinski * 15d9ae7f2bSJakub Kicinski * 1. Redistributions of source code must retain the above 16d9ae7f2bSJakub Kicinski * copyright notice, this list of conditions and the following 17d9ae7f2bSJakub Kicinski * disclaimer. 18d9ae7f2bSJakub Kicinski * 19d9ae7f2bSJakub Kicinski * 2. Redistributions in binary form must reproduce the above 20d9ae7f2bSJakub Kicinski * copyright notice, this list of conditions and the following 21d9ae7f2bSJakub Kicinski * disclaimer in the documentation and/or other materials 22d9ae7f2bSJakub Kicinski * provided with the distribution. 23d9ae7f2bSJakub Kicinski * 24d9ae7f2bSJakub Kicinski * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 25d9ae7f2bSJakub Kicinski * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 26d9ae7f2bSJakub Kicinski * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 27d9ae7f2bSJakub Kicinski * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 28d9ae7f2bSJakub Kicinski * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 29d9ae7f2bSJakub Kicinski * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 30d9ae7f2bSJakub Kicinski * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 31d9ae7f2bSJakub Kicinski * SOFTWARE. 32d9ae7f2bSJakub Kicinski */ 33d9ae7f2bSJakub Kicinski 34d9ae7f2bSJakub Kicinski #define pr_fmt(fmt) "NFP net bpf: " fmt 35d9ae7f2bSJakub Kicinski 36d9ae7f2bSJakub Kicinski #include <linux/kernel.h> 37d9ae7f2bSJakub Kicinski #include <linux/bpf.h> 38d9ae7f2bSJakub Kicinski #include <linux/filter.h> 39d9ae7f2bSJakub Kicinski #include <linux/pkt_cls.h> 40d9ae7f2bSJakub Kicinski #include <linux/unistd.h> 41d9ae7f2bSJakub Kicinski 42d9ae7f2bSJakub Kicinski #include "main.h" 43d9ae7f2bSJakub Kicinski #include "../nfp_asm.h" 44d9ae7f2bSJakub Kicinski 45d9ae7f2bSJakub Kicinski /* --- NFP prog --- */ 46d9ae7f2bSJakub Kicinski /* Foreach "multiple" entries macros provide pos and next<n> pointers. 47d9ae7f2bSJakub Kicinski * It's safe to modify the next pointers (but not pos). 48d9ae7f2bSJakub Kicinski */ 49d9ae7f2bSJakub Kicinski #define nfp_for_each_insn_walk2(nfp_prog, pos, next) \ 50d9ae7f2bSJakub Kicinski for (pos = list_first_entry(&(nfp_prog)->insns, typeof(*pos), l), \ 51d9ae7f2bSJakub Kicinski next = list_next_entry(pos, l); \ 52d9ae7f2bSJakub Kicinski &(nfp_prog)->insns != &pos->l && \ 53d9ae7f2bSJakub Kicinski &(nfp_prog)->insns != &next->l; \ 54d9ae7f2bSJakub Kicinski pos = nfp_meta_next(pos), \ 55d9ae7f2bSJakub Kicinski next = nfp_meta_next(pos)) 56d9ae7f2bSJakub Kicinski 57d9ae7f2bSJakub Kicinski #define nfp_for_each_insn_walk3(nfp_prog, pos, next, next2) \ 58d9ae7f2bSJakub Kicinski for (pos = list_first_entry(&(nfp_prog)->insns, typeof(*pos), l), \ 59d9ae7f2bSJakub Kicinski next = list_next_entry(pos, l), \ 60d9ae7f2bSJakub Kicinski next2 = list_next_entry(next, l); \ 61d9ae7f2bSJakub Kicinski &(nfp_prog)->insns != &pos->l && \ 62d9ae7f2bSJakub Kicinski &(nfp_prog)->insns != &next->l && \ 63d9ae7f2bSJakub Kicinski &(nfp_prog)->insns != &next2->l; \ 64d9ae7f2bSJakub Kicinski pos = nfp_meta_next(pos), \ 65d9ae7f2bSJakub Kicinski next = nfp_meta_next(pos), \ 66d9ae7f2bSJakub Kicinski next2 = nfp_meta_next(next)) 67d9ae7f2bSJakub Kicinski 68d9ae7f2bSJakub Kicinski static bool 69d9ae7f2bSJakub Kicinski nfp_meta_has_next(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 70d9ae7f2bSJakub Kicinski { 71d9ae7f2bSJakub Kicinski return meta->l.next != &nfp_prog->insns; 72d9ae7f2bSJakub Kicinski } 73d9ae7f2bSJakub Kicinski 74d9ae7f2bSJakub Kicinski static bool 75d9ae7f2bSJakub Kicinski nfp_meta_has_prev(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 76d9ae7f2bSJakub Kicinski { 77d9ae7f2bSJakub Kicinski return meta->l.prev != &nfp_prog->insns; 78d9ae7f2bSJakub Kicinski } 79d9ae7f2bSJakub Kicinski 80d9ae7f2bSJakub Kicinski static void nfp_prog_free(struct nfp_prog *nfp_prog) 81d9ae7f2bSJakub Kicinski { 82d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta, *tmp; 83d9ae7f2bSJakub Kicinski 84d9ae7f2bSJakub Kicinski list_for_each_entry_safe(meta, tmp, &nfp_prog->insns, l) { 85d9ae7f2bSJakub Kicinski list_del(&meta->l); 86d9ae7f2bSJakub Kicinski kfree(meta); 87d9ae7f2bSJakub Kicinski } 88d9ae7f2bSJakub Kicinski kfree(nfp_prog); 89d9ae7f2bSJakub Kicinski } 90d9ae7f2bSJakub Kicinski 91d9ae7f2bSJakub Kicinski static void nfp_prog_push(struct nfp_prog *nfp_prog, u64 insn) 92d9ae7f2bSJakub Kicinski { 93d9ae7f2bSJakub Kicinski if (nfp_prog->__prog_alloc_len == nfp_prog->prog_len) { 94d9ae7f2bSJakub Kicinski nfp_prog->error = -ENOSPC; 95d9ae7f2bSJakub Kicinski return; 96d9ae7f2bSJakub Kicinski } 97d9ae7f2bSJakub Kicinski 98d9ae7f2bSJakub Kicinski nfp_prog->prog[nfp_prog->prog_len] = insn; 99d9ae7f2bSJakub Kicinski nfp_prog->prog_len++; 100d9ae7f2bSJakub Kicinski } 101d9ae7f2bSJakub Kicinski 102d9ae7f2bSJakub Kicinski static unsigned int nfp_prog_current_offset(struct nfp_prog *nfp_prog) 103d9ae7f2bSJakub Kicinski { 104d9ae7f2bSJakub Kicinski return nfp_prog->start_off + nfp_prog->prog_len; 105d9ae7f2bSJakub Kicinski } 106d9ae7f2bSJakub Kicinski 107d9ae7f2bSJakub Kicinski static unsigned int 108d9ae7f2bSJakub Kicinski nfp_prog_offset_to_index(struct nfp_prog *nfp_prog, unsigned int offset) 109d9ae7f2bSJakub Kicinski { 110d9ae7f2bSJakub Kicinski return offset - nfp_prog->start_off; 111d9ae7f2bSJakub Kicinski } 112d9ae7f2bSJakub Kicinski 113d9ae7f2bSJakub Kicinski /* --- Emitters --- */ 114d9ae7f2bSJakub Kicinski static void 115d9ae7f2bSJakub Kicinski __emit_cmd(struct nfp_prog *nfp_prog, enum cmd_tgt_map op, 116d9ae7f2bSJakub Kicinski u8 mode, u8 xfer, u8 areg, u8 breg, u8 size, bool sync) 117d9ae7f2bSJakub Kicinski { 118d9ae7f2bSJakub Kicinski enum cmd_ctx_swap ctx; 119d9ae7f2bSJakub Kicinski u64 insn; 120d9ae7f2bSJakub Kicinski 121d9ae7f2bSJakub Kicinski if (sync) 122d9ae7f2bSJakub Kicinski ctx = CMD_CTX_SWAP; 123d9ae7f2bSJakub Kicinski else 124d9ae7f2bSJakub Kicinski ctx = CMD_CTX_NO_SWAP; 125d9ae7f2bSJakub Kicinski 126d9ae7f2bSJakub Kicinski insn = FIELD_PREP(OP_CMD_A_SRC, areg) | 127d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_CTX, ctx) | 128d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_B_SRC, breg) | 129d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_TOKEN, cmd_tgt_act[op].token) | 130d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_XFER, xfer) | 131d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_CNT, size) | 132d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_SIG, sync) | 133d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_TGT_CMD, cmd_tgt_act[op].tgt_cmd) | 134d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_MODE, mode); 135d9ae7f2bSJakub Kicinski 136d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 137d9ae7f2bSJakub Kicinski } 138d9ae7f2bSJakub Kicinski 139d9ae7f2bSJakub Kicinski static void 140d9ae7f2bSJakub Kicinski emit_cmd(struct nfp_prog *nfp_prog, enum cmd_tgt_map op, 141b3f868dfSJakub Kicinski u8 mode, u8 xfer, swreg lreg, swreg rreg, u8 size, bool sync) 142d9ae7f2bSJakub Kicinski { 143d9ae7f2bSJakub Kicinski struct nfp_insn_re_regs reg; 144d9ae7f2bSJakub Kicinski int err; 145d9ae7f2bSJakub Kicinski 146d9ae7f2bSJakub Kicinski err = swreg_to_restricted(reg_none(), lreg, rreg, ®, false); 147d9ae7f2bSJakub Kicinski if (err) { 148d9ae7f2bSJakub Kicinski nfp_prog->error = err; 149d9ae7f2bSJakub Kicinski return; 150d9ae7f2bSJakub Kicinski } 151d9ae7f2bSJakub Kicinski if (reg.swap) { 152d9ae7f2bSJakub Kicinski pr_err("cmd can't swap arguments\n"); 153d9ae7f2bSJakub Kicinski nfp_prog->error = -EFAULT; 154d9ae7f2bSJakub Kicinski return; 155d9ae7f2bSJakub Kicinski } 156995e101fSJakub Kicinski if (reg.dst_lmextn || reg.src_lmextn) { 157995e101fSJakub Kicinski pr_err("cmd can't use LMextn\n"); 158995e101fSJakub Kicinski nfp_prog->error = -EFAULT; 159995e101fSJakub Kicinski return; 160995e101fSJakub Kicinski } 161d9ae7f2bSJakub Kicinski 162d9ae7f2bSJakub Kicinski __emit_cmd(nfp_prog, op, mode, xfer, reg.areg, reg.breg, size, sync); 163d9ae7f2bSJakub Kicinski } 164d9ae7f2bSJakub Kicinski 165d9ae7f2bSJakub Kicinski static void 166d9ae7f2bSJakub Kicinski __emit_br(struct nfp_prog *nfp_prog, enum br_mask mask, enum br_ev_pip ev_pip, 167d9ae7f2bSJakub Kicinski enum br_ctx_signal_state css, u16 addr, u8 defer) 168d9ae7f2bSJakub Kicinski { 169d9ae7f2bSJakub Kicinski u16 addr_lo, addr_hi; 170d9ae7f2bSJakub Kicinski u64 insn; 171d9ae7f2bSJakub Kicinski 172d9ae7f2bSJakub Kicinski addr_lo = addr & (OP_BR_ADDR_LO >> __bf_shf(OP_BR_ADDR_LO)); 173d9ae7f2bSJakub Kicinski addr_hi = addr != addr_lo; 174d9ae7f2bSJakub Kicinski 175d9ae7f2bSJakub Kicinski insn = OP_BR_BASE | 176d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_MASK, mask) | 177d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_EV_PIP, ev_pip) | 178d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_CSS, css) | 179d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_DEFBR, defer) | 180d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_ADDR_LO, addr_lo) | 181d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_ADDR_HI, addr_hi); 182d9ae7f2bSJakub Kicinski 183d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 184d9ae7f2bSJakub Kicinski } 185d9ae7f2bSJakub Kicinski 186d9ae7f2bSJakub Kicinski static void emit_br_def(struct nfp_prog *nfp_prog, u16 addr, u8 defer) 187d9ae7f2bSJakub Kicinski { 188d9ae7f2bSJakub Kicinski if (defer > 2) { 189d9ae7f2bSJakub Kicinski pr_err("BUG: branch defer out of bounds %d\n", defer); 190d9ae7f2bSJakub Kicinski nfp_prog->error = -EFAULT; 191d9ae7f2bSJakub Kicinski return; 192d9ae7f2bSJakub Kicinski } 193d9ae7f2bSJakub Kicinski __emit_br(nfp_prog, BR_UNC, BR_EV_PIP_UNCOND, BR_CSS_NONE, addr, defer); 194d9ae7f2bSJakub Kicinski } 195d9ae7f2bSJakub Kicinski 196d9ae7f2bSJakub Kicinski static void 197d9ae7f2bSJakub Kicinski emit_br(struct nfp_prog *nfp_prog, enum br_mask mask, u16 addr, u8 defer) 198d9ae7f2bSJakub Kicinski { 199d9ae7f2bSJakub Kicinski __emit_br(nfp_prog, mask, 200d9ae7f2bSJakub Kicinski mask != BR_UNC ? BR_EV_PIP_COND : BR_EV_PIP_UNCOND, 201d9ae7f2bSJakub Kicinski BR_CSS_NONE, addr, defer); 202d9ae7f2bSJakub Kicinski } 203d9ae7f2bSJakub Kicinski 204d9ae7f2bSJakub Kicinski static void 205d9ae7f2bSJakub Kicinski __emit_br_byte(struct nfp_prog *nfp_prog, u8 areg, u8 breg, bool imm8, 206995e101fSJakub Kicinski u8 byte, bool equal, u16 addr, u8 defer, bool src_lmextn) 207d9ae7f2bSJakub Kicinski { 208d9ae7f2bSJakub Kicinski u16 addr_lo, addr_hi; 209d9ae7f2bSJakub Kicinski u64 insn; 210d9ae7f2bSJakub Kicinski 211d9ae7f2bSJakub Kicinski addr_lo = addr & (OP_BB_ADDR_LO >> __bf_shf(OP_BB_ADDR_LO)); 212d9ae7f2bSJakub Kicinski addr_hi = addr != addr_lo; 213d9ae7f2bSJakub Kicinski 214d9ae7f2bSJakub Kicinski insn = OP_BBYTE_BASE | 215d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BB_A_SRC, areg) | 216d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BB_BYTE, byte) | 217d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BB_B_SRC, breg) | 218d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BB_I8, imm8) | 219d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BB_EQ, equal) | 220d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BB_DEFBR, defer) | 221d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BB_ADDR_LO, addr_lo) | 222995e101fSJakub Kicinski FIELD_PREP(OP_BB_ADDR_HI, addr_hi) | 223995e101fSJakub Kicinski FIELD_PREP(OP_BB_SRC_LMEXTN, src_lmextn); 224d9ae7f2bSJakub Kicinski 225d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 226d9ae7f2bSJakub Kicinski } 227d9ae7f2bSJakub Kicinski 228d9ae7f2bSJakub Kicinski static void 229d9ae7f2bSJakub Kicinski emit_br_byte_neq(struct nfp_prog *nfp_prog, 230995e101fSJakub Kicinski swreg src, u8 imm, u8 byte, u16 addr, u8 defer) 231d9ae7f2bSJakub Kicinski { 232d9ae7f2bSJakub Kicinski struct nfp_insn_re_regs reg; 233d9ae7f2bSJakub Kicinski int err; 234d9ae7f2bSJakub Kicinski 235995e101fSJakub Kicinski err = swreg_to_restricted(reg_none(), src, reg_imm(imm), ®, true); 236d9ae7f2bSJakub Kicinski if (err) { 237d9ae7f2bSJakub Kicinski nfp_prog->error = err; 238d9ae7f2bSJakub Kicinski return; 239d9ae7f2bSJakub Kicinski } 240d9ae7f2bSJakub Kicinski 241d9ae7f2bSJakub Kicinski __emit_br_byte(nfp_prog, reg.areg, reg.breg, reg.i8, byte, false, addr, 242995e101fSJakub Kicinski defer, reg.src_lmextn); 243d9ae7f2bSJakub Kicinski } 244d9ae7f2bSJakub Kicinski 245d9ae7f2bSJakub Kicinski static void 246d9ae7f2bSJakub Kicinski __emit_immed(struct nfp_prog *nfp_prog, u16 areg, u16 breg, u16 imm_hi, 247d9ae7f2bSJakub Kicinski enum immed_width width, bool invert, 248995e101fSJakub Kicinski enum immed_shift shift, bool wr_both, 249995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 250d9ae7f2bSJakub Kicinski { 251d9ae7f2bSJakub Kicinski u64 insn; 252d9ae7f2bSJakub Kicinski 253d9ae7f2bSJakub Kicinski insn = OP_IMMED_BASE | 254d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_A_SRC, areg) | 255d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_B_SRC, breg) | 256d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_IMM, imm_hi) | 257d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_WIDTH, width) | 258d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_INV, invert) | 259d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_SHIFT, shift) | 260995e101fSJakub Kicinski FIELD_PREP(OP_IMMED_WR_AB, wr_both) | 261995e101fSJakub Kicinski FIELD_PREP(OP_IMMED_SRC_LMEXTN, src_lmextn) | 262995e101fSJakub Kicinski FIELD_PREP(OP_IMMED_DST_LMEXTN, dst_lmextn); 263d9ae7f2bSJakub Kicinski 264d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 265d9ae7f2bSJakub Kicinski } 266d9ae7f2bSJakub Kicinski 267d9ae7f2bSJakub Kicinski static void 268b3f868dfSJakub Kicinski emit_immed(struct nfp_prog *nfp_prog, swreg dst, u16 imm, 269d9ae7f2bSJakub Kicinski enum immed_width width, bool invert, enum immed_shift shift) 270d9ae7f2bSJakub Kicinski { 271d9ae7f2bSJakub Kicinski struct nfp_insn_ur_regs reg; 272d9ae7f2bSJakub Kicinski int err; 273d9ae7f2bSJakub Kicinski 274b3f868dfSJakub Kicinski if (swreg_type(dst) == NN_REG_IMM) { 275d9ae7f2bSJakub Kicinski nfp_prog->error = -EFAULT; 276d9ae7f2bSJakub Kicinski return; 277d9ae7f2bSJakub Kicinski } 278d9ae7f2bSJakub Kicinski 279d9ae7f2bSJakub Kicinski err = swreg_to_unrestricted(dst, dst, reg_imm(imm & 0xff), ®); 280d9ae7f2bSJakub Kicinski if (err) { 281d9ae7f2bSJakub Kicinski nfp_prog->error = err; 282d9ae7f2bSJakub Kicinski return; 283d9ae7f2bSJakub Kicinski } 284d9ae7f2bSJakub Kicinski 285d9ae7f2bSJakub Kicinski __emit_immed(nfp_prog, reg.areg, reg.breg, imm >> 8, width, 286995e101fSJakub Kicinski invert, shift, reg.wr_both, 287995e101fSJakub Kicinski reg.dst_lmextn, reg.src_lmextn); 288d9ae7f2bSJakub Kicinski } 289d9ae7f2bSJakub Kicinski 290d9ae7f2bSJakub Kicinski static void 291d9ae7f2bSJakub Kicinski __emit_shf(struct nfp_prog *nfp_prog, u16 dst, enum alu_dst_ab dst_ab, 292d9ae7f2bSJakub Kicinski enum shf_sc sc, u8 shift, 293995e101fSJakub Kicinski u16 areg, enum shf_op op, u16 breg, bool i8, bool sw, bool wr_both, 294995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 295d9ae7f2bSJakub Kicinski { 296d9ae7f2bSJakub Kicinski u64 insn; 297d9ae7f2bSJakub Kicinski 298d9ae7f2bSJakub Kicinski if (!FIELD_FIT(OP_SHF_SHIFT, shift)) { 299d9ae7f2bSJakub Kicinski nfp_prog->error = -EFAULT; 300d9ae7f2bSJakub Kicinski return; 301d9ae7f2bSJakub Kicinski } 302d9ae7f2bSJakub Kicinski 303d9ae7f2bSJakub Kicinski if (sc == SHF_SC_L_SHF) 304d9ae7f2bSJakub Kicinski shift = 32 - shift; 305d9ae7f2bSJakub Kicinski 306d9ae7f2bSJakub Kicinski insn = OP_SHF_BASE | 307d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_A_SRC, areg) | 308d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_SC, sc) | 309d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_B_SRC, breg) | 310d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_I8, i8) | 311d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_SW, sw) | 312d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_DST, dst) | 313d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_SHIFT, shift) | 314d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_OP, op) | 315d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_DST_AB, dst_ab) | 316995e101fSJakub Kicinski FIELD_PREP(OP_SHF_WR_AB, wr_both) | 317995e101fSJakub Kicinski FIELD_PREP(OP_SHF_SRC_LMEXTN, src_lmextn) | 318995e101fSJakub Kicinski FIELD_PREP(OP_SHF_DST_LMEXTN, dst_lmextn); 319d9ae7f2bSJakub Kicinski 320d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 321d9ae7f2bSJakub Kicinski } 322d9ae7f2bSJakub Kicinski 323d9ae7f2bSJakub Kicinski static void 324b3f868dfSJakub Kicinski emit_shf(struct nfp_prog *nfp_prog, swreg dst, 325b3f868dfSJakub Kicinski swreg lreg, enum shf_op op, swreg rreg, enum shf_sc sc, u8 shift) 326d9ae7f2bSJakub Kicinski { 327d9ae7f2bSJakub Kicinski struct nfp_insn_re_regs reg; 328d9ae7f2bSJakub Kicinski int err; 329d9ae7f2bSJakub Kicinski 330d9ae7f2bSJakub Kicinski err = swreg_to_restricted(dst, lreg, rreg, ®, true); 331d9ae7f2bSJakub Kicinski if (err) { 332d9ae7f2bSJakub Kicinski nfp_prog->error = err; 333d9ae7f2bSJakub Kicinski return; 334d9ae7f2bSJakub Kicinski } 335d9ae7f2bSJakub Kicinski 336d9ae7f2bSJakub Kicinski __emit_shf(nfp_prog, reg.dst, reg.dst_ab, sc, shift, 337995e101fSJakub Kicinski reg.areg, op, reg.breg, reg.i8, reg.swap, reg.wr_both, 338995e101fSJakub Kicinski reg.dst_lmextn, reg.src_lmextn); 339d9ae7f2bSJakub Kicinski } 340d9ae7f2bSJakub Kicinski 341d9ae7f2bSJakub Kicinski static void 342d9ae7f2bSJakub Kicinski __emit_alu(struct nfp_prog *nfp_prog, u16 dst, enum alu_dst_ab dst_ab, 343995e101fSJakub Kicinski u16 areg, enum alu_op op, u16 breg, bool swap, bool wr_both, 344995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 345d9ae7f2bSJakub Kicinski { 346d9ae7f2bSJakub Kicinski u64 insn; 347d9ae7f2bSJakub Kicinski 348d9ae7f2bSJakub Kicinski insn = OP_ALU_BASE | 349d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_A_SRC, areg) | 350d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_B_SRC, breg) | 351d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_DST, dst) | 352d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_SW, swap) | 353d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_OP, op) | 354d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_DST_AB, dst_ab) | 355995e101fSJakub Kicinski FIELD_PREP(OP_ALU_WR_AB, wr_both) | 356995e101fSJakub Kicinski FIELD_PREP(OP_ALU_SRC_LMEXTN, src_lmextn) | 357995e101fSJakub Kicinski FIELD_PREP(OP_ALU_DST_LMEXTN, dst_lmextn); 358d9ae7f2bSJakub Kicinski 359d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 360d9ae7f2bSJakub Kicinski } 361d9ae7f2bSJakub Kicinski 362d9ae7f2bSJakub Kicinski static void 363b3f868dfSJakub Kicinski emit_alu(struct nfp_prog *nfp_prog, swreg dst, 364b3f868dfSJakub Kicinski swreg lreg, enum alu_op op, swreg rreg) 365d9ae7f2bSJakub Kicinski { 366d9ae7f2bSJakub Kicinski struct nfp_insn_ur_regs reg; 367d9ae7f2bSJakub Kicinski int err; 368d9ae7f2bSJakub Kicinski 369d9ae7f2bSJakub Kicinski err = swreg_to_unrestricted(dst, lreg, rreg, ®); 370d9ae7f2bSJakub Kicinski if (err) { 371d9ae7f2bSJakub Kicinski nfp_prog->error = err; 372d9ae7f2bSJakub Kicinski return; 373d9ae7f2bSJakub Kicinski } 374d9ae7f2bSJakub Kicinski 375d9ae7f2bSJakub Kicinski __emit_alu(nfp_prog, reg.dst, reg.dst_ab, 376995e101fSJakub Kicinski reg.areg, op, reg.breg, reg.swap, reg.wr_both, 377995e101fSJakub Kicinski reg.dst_lmextn, reg.src_lmextn); 378d9ae7f2bSJakub Kicinski } 379d9ae7f2bSJakub Kicinski 380d9ae7f2bSJakub Kicinski static void 381d9ae7f2bSJakub Kicinski __emit_ld_field(struct nfp_prog *nfp_prog, enum shf_sc sc, 382d9ae7f2bSJakub Kicinski u8 areg, u8 bmask, u8 breg, u8 shift, bool imm8, 383995e101fSJakub Kicinski bool zero, bool swap, bool wr_both, 384995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 385d9ae7f2bSJakub Kicinski { 386d9ae7f2bSJakub Kicinski u64 insn; 387d9ae7f2bSJakub Kicinski 388d9ae7f2bSJakub Kicinski insn = OP_LDF_BASE | 389d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_A_SRC, areg) | 390d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_SC, sc) | 391d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_B_SRC, breg) | 392d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_I8, imm8) | 393d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_SW, swap) | 394d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_ZF, zero) | 395d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_BMASK, bmask) | 396d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_SHF, shift) | 397995e101fSJakub Kicinski FIELD_PREP(OP_LDF_WR_AB, wr_both) | 398995e101fSJakub Kicinski FIELD_PREP(OP_LDF_SRC_LMEXTN, src_lmextn) | 399995e101fSJakub Kicinski FIELD_PREP(OP_LDF_DST_LMEXTN, dst_lmextn); 400d9ae7f2bSJakub Kicinski 401d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 402d9ae7f2bSJakub Kicinski } 403d9ae7f2bSJakub Kicinski 404d9ae7f2bSJakub Kicinski static void 405bc8c80a8SJakub Kicinski emit_ld_field_any(struct nfp_prog *nfp_prog, swreg dst, u8 bmask, swreg src, 406bc8c80a8SJakub Kicinski enum shf_sc sc, u8 shift, bool zero) 407d9ae7f2bSJakub Kicinski { 408d9ae7f2bSJakub Kicinski struct nfp_insn_re_regs reg; 409d9ae7f2bSJakub Kicinski int err; 410d9ae7f2bSJakub Kicinski 4112de1be1dSJakub Kicinski /* Note: ld_field is special as it uses one of the src regs as dst */ 4122de1be1dSJakub Kicinski err = swreg_to_restricted(dst, dst, src, ®, true); 413d9ae7f2bSJakub Kicinski if (err) { 414d9ae7f2bSJakub Kicinski nfp_prog->error = err; 415d9ae7f2bSJakub Kicinski return; 416d9ae7f2bSJakub Kicinski } 417d9ae7f2bSJakub Kicinski 418d9ae7f2bSJakub Kicinski __emit_ld_field(nfp_prog, sc, reg.areg, bmask, reg.breg, shift, 419995e101fSJakub Kicinski reg.i8, zero, reg.swap, reg.wr_both, 420995e101fSJakub Kicinski reg.dst_lmextn, reg.src_lmextn); 421d9ae7f2bSJakub Kicinski } 422d9ae7f2bSJakub Kicinski 423d9ae7f2bSJakub Kicinski static void 424b3f868dfSJakub Kicinski emit_ld_field(struct nfp_prog *nfp_prog, swreg dst, u8 bmask, swreg src, 425d9ae7f2bSJakub Kicinski enum shf_sc sc, u8 shift) 426d9ae7f2bSJakub Kicinski { 427bc8c80a8SJakub Kicinski emit_ld_field_any(nfp_prog, dst, bmask, src, sc, shift, false); 428d9ae7f2bSJakub Kicinski } 429d9ae7f2bSJakub Kicinski 4302df03a50SJakub Kicinski static void 4312df03a50SJakub Kicinski __emit_lcsr(struct nfp_prog *nfp_prog, u16 areg, u16 breg, bool wr, u16 addr, 4322df03a50SJakub Kicinski bool dst_lmextn, bool src_lmextn) 4332df03a50SJakub Kicinski { 4342df03a50SJakub Kicinski u64 insn; 4352df03a50SJakub Kicinski 4362df03a50SJakub Kicinski insn = OP_LCSR_BASE | 4372df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_A_SRC, areg) | 4382df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_B_SRC, breg) | 4392df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_WRITE, wr) | 4402df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_ADDR, addr) | 4412df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_SRC_LMEXTN, src_lmextn) | 4422df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_DST_LMEXTN, dst_lmextn); 4432df03a50SJakub Kicinski 4442df03a50SJakub Kicinski nfp_prog_push(nfp_prog, insn); 4452df03a50SJakub Kicinski } 4462df03a50SJakub Kicinski 4472df03a50SJakub Kicinski static void emit_csr_wr(struct nfp_prog *nfp_prog, swreg src, u16 addr) 4482df03a50SJakub Kicinski { 4492df03a50SJakub Kicinski struct nfp_insn_ur_regs reg; 4502df03a50SJakub Kicinski int err; 4512df03a50SJakub Kicinski 4522df03a50SJakub Kicinski /* This instruction takes immeds instead of reg_none() for the ignored 4532df03a50SJakub Kicinski * operand, but we can't encode 2 immeds in one instr with our normal 4542df03a50SJakub Kicinski * swreg infra so if param is an immed, we encode as reg_none() and 4552df03a50SJakub Kicinski * copy the immed to both operands. 4562df03a50SJakub Kicinski */ 4572df03a50SJakub Kicinski if (swreg_type(src) == NN_REG_IMM) { 4582df03a50SJakub Kicinski err = swreg_to_unrestricted(reg_none(), src, reg_none(), ®); 4592df03a50SJakub Kicinski reg.breg = reg.areg; 4602df03a50SJakub Kicinski } else { 4612df03a50SJakub Kicinski err = swreg_to_unrestricted(reg_none(), src, reg_imm(0), ®); 4622df03a50SJakub Kicinski } 4632df03a50SJakub Kicinski if (err) { 4642df03a50SJakub Kicinski nfp_prog->error = err; 4652df03a50SJakub Kicinski return; 4662df03a50SJakub Kicinski } 4672df03a50SJakub Kicinski 4682df03a50SJakub Kicinski __emit_lcsr(nfp_prog, reg.areg, reg.breg, true, addr / 4, 4692df03a50SJakub Kicinski false, reg.src_lmextn); 4702df03a50SJakub Kicinski } 4712df03a50SJakub Kicinski 4721c03e03fSJakub Kicinski static void emit_nop(struct nfp_prog *nfp_prog) 4731c03e03fSJakub Kicinski { 4741c03e03fSJakub Kicinski __emit_immed(nfp_prog, UR_REG_IMM, UR_REG_IMM, 0, 0, 0, 0, 0, 0, 0); 4751c03e03fSJakub Kicinski } 4761c03e03fSJakub Kicinski 477d9ae7f2bSJakub Kicinski /* --- Wrappers --- */ 478d9ae7f2bSJakub Kicinski static bool pack_immed(u32 imm, u16 *val, enum immed_shift *shift) 479d9ae7f2bSJakub Kicinski { 480d9ae7f2bSJakub Kicinski if (!(imm & 0xffff0000)) { 481d9ae7f2bSJakub Kicinski *val = imm; 482d9ae7f2bSJakub Kicinski *shift = IMMED_SHIFT_0B; 483d9ae7f2bSJakub Kicinski } else if (!(imm & 0xff0000ff)) { 484d9ae7f2bSJakub Kicinski *val = imm >> 8; 485d9ae7f2bSJakub Kicinski *shift = IMMED_SHIFT_1B; 486d9ae7f2bSJakub Kicinski } else if (!(imm & 0x0000ffff)) { 487d9ae7f2bSJakub Kicinski *val = imm >> 16; 488d9ae7f2bSJakub Kicinski *shift = IMMED_SHIFT_2B; 489d9ae7f2bSJakub Kicinski } else { 490d9ae7f2bSJakub Kicinski return false; 491d9ae7f2bSJakub Kicinski } 492d9ae7f2bSJakub Kicinski 493d9ae7f2bSJakub Kicinski return true; 494d9ae7f2bSJakub Kicinski } 495d9ae7f2bSJakub Kicinski 496b3f868dfSJakub Kicinski static void wrp_immed(struct nfp_prog *nfp_prog, swreg dst, u32 imm) 497d9ae7f2bSJakub Kicinski { 498d9ae7f2bSJakub Kicinski enum immed_shift shift; 499d9ae7f2bSJakub Kicinski u16 val; 500d9ae7f2bSJakub Kicinski 501d9ae7f2bSJakub Kicinski if (pack_immed(imm, &val, &shift)) { 502d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, val, IMMED_WIDTH_ALL, false, shift); 503d9ae7f2bSJakub Kicinski } else if (pack_immed(~imm, &val, &shift)) { 504d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, val, IMMED_WIDTH_ALL, true, shift); 505d9ae7f2bSJakub Kicinski } else { 506d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, imm & 0xffff, IMMED_WIDTH_ALL, 507d9ae7f2bSJakub Kicinski false, IMMED_SHIFT_0B); 508d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, imm >> 16, IMMED_WIDTH_WORD, 509d9ae7f2bSJakub Kicinski false, IMMED_SHIFT_2B); 510d9ae7f2bSJakub Kicinski } 511d9ae7f2bSJakub Kicinski } 512d9ae7f2bSJakub Kicinski 513d9ae7f2bSJakub Kicinski /* ur_load_imm_any() - encode immediate or use tmp register (unrestricted) 514d9ae7f2bSJakub Kicinski * If the @imm is small enough encode it directly in operand and return 515d9ae7f2bSJakub Kicinski * otherwise load @imm to a spare register and return its encoding. 516d9ae7f2bSJakub Kicinski */ 517b3f868dfSJakub Kicinski static swreg ur_load_imm_any(struct nfp_prog *nfp_prog, u32 imm, swreg tmp_reg) 518d9ae7f2bSJakub Kicinski { 519d9ae7f2bSJakub Kicinski if (FIELD_FIT(UR_REG_IMM_MAX, imm)) 520d9ae7f2bSJakub Kicinski return reg_imm(imm); 521d9ae7f2bSJakub Kicinski 522d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, tmp_reg, imm); 523d9ae7f2bSJakub Kicinski return tmp_reg; 524d9ae7f2bSJakub Kicinski } 525d9ae7f2bSJakub Kicinski 526d9ae7f2bSJakub Kicinski /* re_load_imm_any() - encode immediate or use tmp register (restricted) 527d9ae7f2bSJakub Kicinski * If the @imm is small enough encode it directly in operand and return 528d9ae7f2bSJakub Kicinski * otherwise load @imm to a spare register and return its encoding. 529d9ae7f2bSJakub Kicinski */ 530b3f868dfSJakub Kicinski static swreg re_load_imm_any(struct nfp_prog *nfp_prog, u32 imm, swreg tmp_reg) 531d9ae7f2bSJakub Kicinski { 532d9ae7f2bSJakub Kicinski if (FIELD_FIT(RE_REG_IMM_MAX, imm)) 533d9ae7f2bSJakub Kicinski return reg_imm(imm); 534d9ae7f2bSJakub Kicinski 535d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, tmp_reg, imm); 536d9ae7f2bSJakub Kicinski return tmp_reg; 537d9ae7f2bSJakub Kicinski } 538d9ae7f2bSJakub Kicinski 539ff42bb9fSJakub Kicinski static void wrp_nops(struct nfp_prog *nfp_prog, unsigned int count) 540ff42bb9fSJakub Kicinski { 541ff42bb9fSJakub Kicinski while (count--) 542ff42bb9fSJakub Kicinski emit_nop(nfp_prog); 543ff42bb9fSJakub Kicinski } 544ff42bb9fSJakub Kicinski 545d9ae7f2bSJakub Kicinski static void 546d9ae7f2bSJakub Kicinski wrp_br_special(struct nfp_prog *nfp_prog, enum br_mask mask, 547d9ae7f2bSJakub Kicinski enum br_special special) 548d9ae7f2bSJakub Kicinski { 549d9ae7f2bSJakub Kicinski emit_br(nfp_prog, mask, 0, 0); 550d9ae7f2bSJakub Kicinski 551d9ae7f2bSJakub Kicinski nfp_prog->prog[nfp_prog->prog_len - 1] |= 552d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_SPECIAL, special); 553d9ae7f2bSJakub Kicinski } 554d9ae7f2bSJakub Kicinski 555c000dfb5SJakub Kicinski static void wrp_mov(struct nfp_prog *nfp_prog, swreg dst, swreg src) 556c000dfb5SJakub Kicinski { 557c000dfb5SJakub Kicinski emit_alu(nfp_prog, dst, reg_none(), ALU_OP_NONE, src); 558c000dfb5SJakub Kicinski } 559c000dfb5SJakub Kicinski 560d9ae7f2bSJakub Kicinski static void wrp_reg_mov(struct nfp_prog *nfp_prog, u16 dst, u16 src) 561d9ae7f2bSJakub Kicinski { 562c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_both(dst), reg_b(src)); 563d9ae7f2bSJakub Kicinski } 564d9ae7f2bSJakub Kicinski 565d9ae7f2bSJakub Kicinski static int 5660a793977SJakub Kicinski data_ld(struct nfp_prog *nfp_prog, swreg offset, u8 dst_gpr, int size) 567d9ae7f2bSJakub Kicinski { 568d9ae7f2bSJakub Kicinski unsigned int i; 569d9ae7f2bSJakub Kicinski u16 shift, sz; 570d9ae7f2bSJakub Kicinski 571d9ae7f2bSJakub Kicinski /* We load the value from the address indicated in @offset and then 572d9ae7f2bSJakub Kicinski * shift out the data we don't need. Note: this is big endian! 573d9ae7f2bSJakub Kicinski */ 5740a793977SJakub Kicinski sz = max(size, 4); 575d9ae7f2bSJakub Kicinski shift = size < 4 ? 4 - size : 0; 576d9ae7f2bSJakub Kicinski 5770a793977SJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_READ8, CMD_MODE_32b, 0, 5780a793977SJakub Kicinski pptr_reg(nfp_prog), offset, sz - 1, true); 5790a793977SJakub Kicinski 5800a793977SJakub Kicinski i = 0; 5810a793977SJakub Kicinski if (shift) 5820a793977SJakub Kicinski emit_shf(nfp_prog, reg_both(dst_gpr), reg_none(), SHF_OP_NONE, 5830a793977SJakub Kicinski reg_xfer(0), SHF_SC_R_SHF, shift * 8); 5840a793977SJakub Kicinski else 5850a793977SJakub Kicinski for (; i * 4 < size; i++) 5860a793977SJakub Kicinski wrp_mov(nfp_prog, reg_both(dst_gpr + i), reg_xfer(i)); 5870a793977SJakub Kicinski 5880a793977SJakub Kicinski if (i < 2) 5890a793977SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst_gpr + 1), 0); 5900a793977SJakub Kicinski 5910a793977SJakub Kicinski return 0; 5920a793977SJakub Kicinski } 5930a793977SJakub Kicinski 5940a793977SJakub Kicinski static int 5952ca71441SJakub Kicinski data_ld_host_order(struct nfp_prog *nfp_prog, u8 src_gpr, swreg offset, 5962ca71441SJakub Kicinski u8 dst_gpr, int size) 5972ca71441SJakub Kicinski { 5982ca71441SJakub Kicinski unsigned int i; 5992ca71441SJakub Kicinski u8 mask, sz; 6002ca71441SJakub Kicinski 6012ca71441SJakub Kicinski /* We load the value from the address indicated in @offset and then 6022ca71441SJakub Kicinski * mask out the data we don't need. Note: this is little endian! 6032ca71441SJakub Kicinski */ 6042ca71441SJakub Kicinski sz = max(size, 4); 6052ca71441SJakub Kicinski mask = size < 4 ? GENMASK(size - 1, 0) : 0; 6062ca71441SJakub Kicinski 6072ca71441SJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_READ32_SWAP, CMD_MODE_32b, 0, 6082ca71441SJakub Kicinski reg_a(src_gpr), offset, sz / 4 - 1, true); 6092ca71441SJakub Kicinski 6102ca71441SJakub Kicinski i = 0; 6112ca71441SJakub Kicinski if (mask) 6122ca71441SJakub Kicinski emit_ld_field_any(nfp_prog, reg_both(dst_gpr), mask, 6132ca71441SJakub Kicinski reg_xfer(0), SHF_SC_NONE, 0, true); 6142ca71441SJakub Kicinski else 6152ca71441SJakub Kicinski for (; i * 4 < size; i++) 6162ca71441SJakub Kicinski wrp_mov(nfp_prog, reg_both(dst_gpr + i), reg_xfer(i)); 6172ca71441SJakub Kicinski 6182ca71441SJakub Kicinski if (i < 2) 6192ca71441SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst_gpr + 1), 0); 6202ca71441SJakub Kicinski 6212ca71441SJakub Kicinski return 0; 6222ca71441SJakub Kicinski } 6232ca71441SJakub Kicinski 6242ca71441SJakub Kicinski static int 6250a793977SJakub Kicinski construct_data_ind_ld(struct nfp_prog *nfp_prog, u16 offset, u16 src, u8 size) 6260a793977SJakub Kicinski { 6270a793977SJakub Kicinski swreg tmp_reg; 6280a793977SJakub Kicinski 629d9ae7f2bSJakub Kicinski /* Calculate the true offset (src_reg + imm) */ 630d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, offset, imm_b(nfp_prog)); 6310a793977SJakub Kicinski emit_alu(nfp_prog, imm_both(nfp_prog), reg_a(src), ALU_OP_ADD, tmp_reg); 6320a793977SJakub Kicinski 633d9ae7f2bSJakub Kicinski /* Check packet length (size guaranteed to fit b/c it's u8) */ 634d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_a(nfp_prog), 635d9ae7f2bSJakub Kicinski imm_a(nfp_prog), ALU_OP_ADD, reg_imm(size)); 636d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 63718e53b6cSJakub Kicinski plen_reg(nfp_prog), ALU_OP_SUB, imm_a(nfp_prog)); 638d9ae7f2bSJakub Kicinski wrp_br_special(nfp_prog, BR_BLO, OP_BR_GO_ABORT); 6390a793977SJakub Kicinski 640d9ae7f2bSJakub Kicinski /* Load data */ 6410a793977SJakub Kicinski return data_ld(nfp_prog, imm_b(nfp_prog), 0, size); 642d9ae7f2bSJakub Kicinski } 643d9ae7f2bSJakub Kicinski 644d9ae7f2bSJakub Kicinski static int construct_data_ld(struct nfp_prog *nfp_prog, u16 offset, u8 size) 645d9ae7f2bSJakub Kicinski { 6460a793977SJakub Kicinski swreg tmp_reg; 6470a793977SJakub Kicinski 6480a793977SJakub Kicinski /* Check packet length */ 6490a793977SJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, offset + size, imm_a(nfp_prog)); 6500a793977SJakub Kicinski emit_alu(nfp_prog, reg_none(), plen_reg(nfp_prog), ALU_OP_SUB, tmp_reg); 6510a793977SJakub Kicinski wrp_br_special(nfp_prog, BR_BLO, OP_BR_GO_ABORT); 6520a793977SJakub Kicinski 6530a793977SJakub Kicinski /* Load data */ 6540a793977SJakub Kicinski tmp_reg = re_load_imm_any(nfp_prog, offset, imm_b(nfp_prog)); 6550a793977SJakub Kicinski return data_ld(nfp_prog, tmp_reg, 0, size); 656d9ae7f2bSJakub Kicinski } 657d9ae7f2bSJakub Kicinski 658e663fe38SJakub Kicinski static int 659e663fe38SJakub Kicinski data_stx_host_order(struct nfp_prog *nfp_prog, u8 dst_gpr, swreg offset, 660e663fe38SJakub Kicinski u8 src_gpr, u8 size) 661e663fe38SJakub Kicinski { 662e663fe38SJakub Kicinski unsigned int i; 663e663fe38SJakub Kicinski 664e663fe38SJakub Kicinski for (i = 0; i * 4 < size; i++) 665e663fe38SJakub Kicinski wrp_mov(nfp_prog, reg_xfer(i), reg_a(src_gpr + i)); 666e663fe38SJakub Kicinski 667e663fe38SJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_WRITE8_SWAP, CMD_MODE_32b, 0, 668e663fe38SJakub Kicinski reg_a(dst_gpr), offset, size - 1, true); 669e663fe38SJakub Kicinski 670e663fe38SJakub Kicinski return 0; 671e663fe38SJakub Kicinski } 672e663fe38SJakub Kicinski 673e663fe38SJakub Kicinski static int 674e663fe38SJakub Kicinski data_st_host_order(struct nfp_prog *nfp_prog, u8 dst_gpr, swreg offset, 675e663fe38SJakub Kicinski u64 imm, u8 size) 676e663fe38SJakub Kicinski { 677e663fe38SJakub Kicinski wrp_immed(nfp_prog, reg_xfer(0), imm); 678e663fe38SJakub Kicinski if (size == 8) 679e663fe38SJakub Kicinski wrp_immed(nfp_prog, reg_xfer(1), imm >> 32); 680e663fe38SJakub Kicinski 681e663fe38SJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_WRITE8_SWAP, CMD_MODE_32b, 0, 682e663fe38SJakub Kicinski reg_a(dst_gpr), offset, size - 1, true); 683e663fe38SJakub Kicinski 684e663fe38SJakub Kicinski return 0; 685e663fe38SJakub Kicinski } 686e663fe38SJakub Kicinski 687ee9133a8SJakub Kicinski typedef int 688ee9133a8SJakub Kicinski (*lmem_step)(struct nfp_prog *nfp_prog, u8 gpr, u8 gpr_byte, s32 off, 6892df03a50SJakub Kicinski unsigned int size, bool first, bool new_gpr, bool last, bool lm3, 6902df03a50SJakub Kicinski bool needs_inc); 691a82b23fbSJakub Kicinski 692a82b23fbSJakub Kicinski static int 693a82b23fbSJakub Kicinski wrp_lmem_load(struct nfp_prog *nfp_prog, u8 dst, u8 dst_byte, s32 off, 6942df03a50SJakub Kicinski unsigned int size, bool first, bool new_gpr, bool last, bool lm3, 6952df03a50SJakub Kicinski bool needs_inc) 696a82b23fbSJakub Kicinski { 6972df03a50SJakub Kicinski bool should_inc = needs_inc && new_gpr && !last; 698a82b23fbSJakub Kicinski u32 idx, src_byte; 699a82b23fbSJakub Kicinski enum shf_sc sc; 700a82b23fbSJakub Kicinski swreg reg; 701a82b23fbSJakub Kicinski int shf; 702a82b23fbSJakub Kicinski u8 mask; 703a82b23fbSJakub Kicinski 704a82b23fbSJakub Kicinski if (WARN_ON_ONCE(dst_byte + size > 4 || off % 4 + size > 4)) 705a82b23fbSJakub Kicinski return -EOPNOTSUPP; 706a82b23fbSJakub Kicinski 707a82b23fbSJakub Kicinski idx = off / 4; 708a82b23fbSJakub Kicinski 709a82b23fbSJakub Kicinski /* Move the entire word */ 710a82b23fbSJakub Kicinski if (size == 4) { 7112df03a50SJakub Kicinski wrp_mov(nfp_prog, reg_both(dst), 7122df03a50SJakub Kicinski should_inc ? reg_lm_inc(3) : reg_lm(lm3 ? 3 : 0, idx)); 713a82b23fbSJakub Kicinski return 0; 714a82b23fbSJakub Kicinski } 715a82b23fbSJakub Kicinski 7162df03a50SJakub Kicinski if (WARN_ON_ONCE(lm3 && idx > RE_REG_LM_IDX_MAX)) 7172df03a50SJakub Kicinski return -EOPNOTSUPP; 7182df03a50SJakub Kicinski 719a82b23fbSJakub Kicinski src_byte = off % 4; 720a82b23fbSJakub Kicinski 721a82b23fbSJakub Kicinski mask = (1 << size) - 1; 722a82b23fbSJakub Kicinski mask <<= dst_byte; 723a82b23fbSJakub Kicinski 724a82b23fbSJakub Kicinski if (WARN_ON_ONCE(mask > 0xf)) 725a82b23fbSJakub Kicinski return -EOPNOTSUPP; 726a82b23fbSJakub Kicinski 727a82b23fbSJakub Kicinski shf = abs(src_byte - dst_byte) * 8; 728a82b23fbSJakub Kicinski if (src_byte == dst_byte) { 729a82b23fbSJakub Kicinski sc = SHF_SC_NONE; 730a82b23fbSJakub Kicinski } else if (src_byte < dst_byte) { 731a82b23fbSJakub Kicinski shf = 32 - shf; 732a82b23fbSJakub Kicinski sc = SHF_SC_L_SHF; 733a82b23fbSJakub Kicinski } else { 734a82b23fbSJakub Kicinski sc = SHF_SC_R_SHF; 735a82b23fbSJakub Kicinski } 736a82b23fbSJakub Kicinski 737a82b23fbSJakub Kicinski /* ld_field can address fewer indexes, if offset too large do RMW. 738a82b23fbSJakub Kicinski * Because we RMV twice we waste 2 cycles on unaligned 8 byte writes. 739a82b23fbSJakub Kicinski */ 740a82b23fbSJakub Kicinski if (idx <= RE_REG_LM_IDX_MAX) { 7412df03a50SJakub Kicinski reg = reg_lm(lm3 ? 3 : 0, idx); 742a82b23fbSJakub Kicinski } else { 743a82b23fbSJakub Kicinski reg = imm_a(nfp_prog); 7449a90c83cSJakub Kicinski /* If it's not the first part of the load and we start a new GPR 7459a90c83cSJakub Kicinski * that means we are loading a second part of the LMEM word into 7469a90c83cSJakub Kicinski * a new GPR. IOW we've already looked that LMEM word and 7479a90c83cSJakub Kicinski * therefore it has been loaded into imm_a(). 7489a90c83cSJakub Kicinski */ 7499a90c83cSJakub Kicinski if (first || !new_gpr) 750a82b23fbSJakub Kicinski wrp_mov(nfp_prog, reg, reg_lm(0, idx)); 751a82b23fbSJakub Kicinski } 752a82b23fbSJakub Kicinski 753a82b23fbSJakub Kicinski emit_ld_field_any(nfp_prog, reg_both(dst), mask, reg, sc, shf, new_gpr); 754a82b23fbSJakub Kicinski 7552df03a50SJakub Kicinski if (should_inc) 7562df03a50SJakub Kicinski wrp_mov(nfp_prog, reg_none(), reg_lm_inc(3)); 7572df03a50SJakub Kicinski 758a82b23fbSJakub Kicinski return 0; 759a82b23fbSJakub Kicinski } 760ee9133a8SJakub Kicinski 761ee9133a8SJakub Kicinski static int 762ee9133a8SJakub Kicinski wrp_lmem_store(struct nfp_prog *nfp_prog, u8 src, u8 src_byte, s32 off, 7632df03a50SJakub Kicinski unsigned int size, bool first, bool new_gpr, bool last, bool lm3, 7642df03a50SJakub Kicinski bool needs_inc) 765ee9133a8SJakub Kicinski { 7662df03a50SJakub Kicinski bool should_inc = needs_inc && new_gpr && !last; 767ee9133a8SJakub Kicinski u32 idx, dst_byte; 768ee9133a8SJakub Kicinski enum shf_sc sc; 769ee9133a8SJakub Kicinski swreg reg; 770ee9133a8SJakub Kicinski int shf; 771ee9133a8SJakub Kicinski u8 mask; 772ee9133a8SJakub Kicinski 773ee9133a8SJakub Kicinski if (WARN_ON_ONCE(src_byte + size > 4 || off % 4 + size > 4)) 774ee9133a8SJakub Kicinski return -EOPNOTSUPP; 775ee9133a8SJakub Kicinski 776ee9133a8SJakub Kicinski idx = off / 4; 777ee9133a8SJakub Kicinski 778ee9133a8SJakub Kicinski /* Move the entire word */ 779ee9133a8SJakub Kicinski if (size == 4) { 7802df03a50SJakub Kicinski wrp_mov(nfp_prog, 7812df03a50SJakub Kicinski should_inc ? reg_lm_inc(3) : reg_lm(lm3 ? 3 : 0, idx), 7822df03a50SJakub Kicinski reg_b(src)); 783ee9133a8SJakub Kicinski return 0; 784ee9133a8SJakub Kicinski } 785ee9133a8SJakub Kicinski 7862df03a50SJakub Kicinski if (WARN_ON_ONCE(lm3 && idx > RE_REG_LM_IDX_MAX)) 7872df03a50SJakub Kicinski return -EOPNOTSUPP; 7882df03a50SJakub Kicinski 789ee9133a8SJakub Kicinski dst_byte = off % 4; 790ee9133a8SJakub Kicinski 791ee9133a8SJakub Kicinski mask = (1 << size) - 1; 792ee9133a8SJakub Kicinski mask <<= dst_byte; 793ee9133a8SJakub Kicinski 794ee9133a8SJakub Kicinski if (WARN_ON_ONCE(mask > 0xf)) 795ee9133a8SJakub Kicinski return -EOPNOTSUPP; 796ee9133a8SJakub Kicinski 797ee9133a8SJakub Kicinski shf = abs(src_byte - dst_byte) * 8; 798ee9133a8SJakub Kicinski if (src_byte == dst_byte) { 799ee9133a8SJakub Kicinski sc = SHF_SC_NONE; 800ee9133a8SJakub Kicinski } else if (src_byte < dst_byte) { 801ee9133a8SJakub Kicinski shf = 32 - shf; 802ee9133a8SJakub Kicinski sc = SHF_SC_L_SHF; 803ee9133a8SJakub Kicinski } else { 804ee9133a8SJakub Kicinski sc = SHF_SC_R_SHF; 805ee9133a8SJakub Kicinski } 806ee9133a8SJakub Kicinski 807ee9133a8SJakub Kicinski /* ld_field can address fewer indexes, if offset too large do RMW. 808ee9133a8SJakub Kicinski * Because we RMV twice we waste 2 cycles on unaligned 8 byte writes. 809ee9133a8SJakub Kicinski */ 810ee9133a8SJakub Kicinski if (idx <= RE_REG_LM_IDX_MAX) { 8112df03a50SJakub Kicinski reg = reg_lm(lm3 ? 3 : 0, idx); 812ee9133a8SJakub Kicinski } else { 813ee9133a8SJakub Kicinski reg = imm_a(nfp_prog); 8149a90c83cSJakub Kicinski /* Only first and last LMEM locations are going to need RMW, 8159a90c83cSJakub Kicinski * the middle location will be overwritten fully. 8169a90c83cSJakub Kicinski */ 8179a90c83cSJakub Kicinski if (first || last) 818ee9133a8SJakub Kicinski wrp_mov(nfp_prog, reg, reg_lm(0, idx)); 819ee9133a8SJakub Kicinski } 820ee9133a8SJakub Kicinski 821ee9133a8SJakub Kicinski emit_ld_field(nfp_prog, reg, mask, reg_b(src), sc, shf); 822ee9133a8SJakub Kicinski 8239a90c83cSJakub Kicinski if (new_gpr || last) { 824ee9133a8SJakub Kicinski if (idx > RE_REG_LM_IDX_MAX) 825ee9133a8SJakub Kicinski wrp_mov(nfp_prog, reg_lm(0, idx), reg); 8262df03a50SJakub Kicinski if (should_inc) 8272df03a50SJakub Kicinski wrp_mov(nfp_prog, reg_none(), reg_lm_inc(3)); 8289a90c83cSJakub Kicinski } 829ee9133a8SJakub Kicinski 830ee9133a8SJakub Kicinski return 0; 831ee9133a8SJakub Kicinski } 832ee9133a8SJakub Kicinski 833ee9133a8SJakub Kicinski static int 834ee9133a8SJakub Kicinski mem_op_stack(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 835d3488480SJakub Kicinski unsigned int size, unsigned int ptr_off, u8 gpr, bool clr_gpr, 836d3488480SJakub Kicinski lmem_step step) 837ee9133a8SJakub Kicinski { 838d3488480SJakub Kicinski s32 off = nfp_prog->stack_depth + meta->insn.off + ptr_off; 8399a90c83cSJakub Kicinski bool first = true, last; 8402df03a50SJakub Kicinski bool needs_inc = false; 8412df03a50SJakub Kicinski swreg stack_off_reg; 842a82b23fbSJakub Kicinski u8 prev_gpr = 255; 843ee9133a8SJakub Kicinski u32 gpr_byte = 0; 8442df03a50SJakub Kicinski bool lm3 = true; 845ee9133a8SJakub Kicinski int ret; 846ee9133a8SJakub Kicinski 8472df03a50SJakub Kicinski if (off + size <= 64) { 8482df03a50SJakub Kicinski /* We can reach bottom 64B with LMaddr0 */ 8492df03a50SJakub Kicinski lm3 = false; 8502df03a50SJakub Kicinski } else if (round_down(off, 32) == round_down(off + size - 1, 32)) { 8512df03a50SJakub Kicinski /* We have to set up a new pointer. If we know the offset 8522df03a50SJakub Kicinski * and the entire access falls into a single 32 byte aligned 8532df03a50SJakub Kicinski * window we won't have to increment the LM pointer. 8542df03a50SJakub Kicinski * The 32 byte alignment is imporant because offset is ORed in 8552df03a50SJakub Kicinski * not added when doing *l$indexN[off]. 8562df03a50SJakub Kicinski */ 8572df03a50SJakub Kicinski stack_off_reg = ur_load_imm_any(nfp_prog, round_down(off, 32), 8582df03a50SJakub Kicinski stack_imm(nfp_prog)); 8592df03a50SJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), 8602df03a50SJakub Kicinski stack_reg(nfp_prog), ALU_OP_ADD, stack_off_reg); 8612df03a50SJakub Kicinski 8622df03a50SJakub Kicinski off %= 32; 8632df03a50SJakub Kicinski } else { 8642df03a50SJakub Kicinski stack_off_reg = ur_load_imm_any(nfp_prog, round_down(off, 4), 8652df03a50SJakub Kicinski stack_imm(nfp_prog)); 8662df03a50SJakub Kicinski 8672df03a50SJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), 8682df03a50SJakub Kicinski stack_reg(nfp_prog), ALU_OP_ADD, stack_off_reg); 8692df03a50SJakub Kicinski 8702df03a50SJakub Kicinski needs_inc = true; 8712df03a50SJakub Kicinski } 8722df03a50SJakub Kicinski if (lm3) { 8732df03a50SJakub Kicinski emit_csr_wr(nfp_prog, imm_b(nfp_prog), NFP_CSR_ACT_LM_ADDR3); 8742df03a50SJakub Kicinski /* For size < 4 one slot will be filled by zeroing of upper. */ 8752df03a50SJakub Kicinski wrp_nops(nfp_prog, clr_gpr && size < 8 ? 2 : 3); 8762df03a50SJakub Kicinski } 8772df03a50SJakub Kicinski 878a82b23fbSJakub Kicinski if (clr_gpr && size < 8) 879a82b23fbSJakub Kicinski wrp_immed(nfp_prog, reg_both(gpr + 1), 0); 880a82b23fbSJakub Kicinski 881ee9133a8SJakub Kicinski while (size) { 882ee9133a8SJakub Kicinski u32 slice_end; 883ee9133a8SJakub Kicinski u8 slice_size; 884ee9133a8SJakub Kicinski 885ee9133a8SJakub Kicinski slice_size = min(size, 4 - gpr_byte); 886ee9133a8SJakub Kicinski slice_end = min(off + slice_size, round_up(off + 1, 4)); 887ee9133a8SJakub Kicinski slice_size = slice_end - off; 888ee9133a8SJakub Kicinski 8899a90c83cSJakub Kicinski last = slice_size == size; 8909a90c83cSJakub Kicinski 8912df03a50SJakub Kicinski if (needs_inc) 8922df03a50SJakub Kicinski off %= 4; 8932df03a50SJakub Kicinski 894a82b23fbSJakub Kicinski ret = step(nfp_prog, gpr, gpr_byte, off, slice_size, 8952df03a50SJakub Kicinski first, gpr != prev_gpr, last, lm3, needs_inc); 896ee9133a8SJakub Kicinski if (ret) 897ee9133a8SJakub Kicinski return ret; 898ee9133a8SJakub Kicinski 899a82b23fbSJakub Kicinski prev_gpr = gpr; 9009a90c83cSJakub Kicinski first = false; 9019a90c83cSJakub Kicinski 902ee9133a8SJakub Kicinski gpr_byte += slice_size; 903ee9133a8SJakub Kicinski if (gpr_byte >= 4) { 904ee9133a8SJakub Kicinski gpr_byte -= 4; 905ee9133a8SJakub Kicinski gpr++; 906ee9133a8SJakub Kicinski } 907ee9133a8SJakub Kicinski 908ee9133a8SJakub Kicinski size -= slice_size; 909ee9133a8SJakub Kicinski off += slice_size; 910ee9133a8SJakub Kicinski } 911ee9133a8SJakub Kicinski 912ee9133a8SJakub Kicinski return 0; 913ee9133a8SJakub Kicinski } 914ee9133a8SJakub Kicinski 915d9ae7f2bSJakub Kicinski static void 916d9ae7f2bSJakub Kicinski wrp_alu_imm(struct nfp_prog *nfp_prog, u8 dst, enum alu_op alu_op, u32 imm) 917d9ae7f2bSJakub Kicinski { 918b3f868dfSJakub Kicinski swreg tmp_reg; 919d9ae7f2bSJakub Kicinski 920d9ae7f2bSJakub Kicinski if (alu_op == ALU_OP_AND) { 921d9ae7f2bSJakub Kicinski if (!imm) 922d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), 0); 923d9ae7f2bSJakub Kicinski if (!imm || !~imm) 924d9ae7f2bSJakub Kicinski return; 925d9ae7f2bSJakub Kicinski } 926d9ae7f2bSJakub Kicinski if (alu_op == ALU_OP_OR) { 927d9ae7f2bSJakub Kicinski if (!~imm) 928d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), ~0U); 929d9ae7f2bSJakub Kicinski if (!imm || !~imm) 930d9ae7f2bSJakub Kicinski return; 931d9ae7f2bSJakub Kicinski } 932d9ae7f2bSJakub Kicinski if (alu_op == ALU_OP_XOR) { 933d9ae7f2bSJakub Kicinski if (!~imm) 934d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_none(), 935d9ae7f2bSJakub Kicinski ALU_OP_NEG, reg_b(dst)); 936d9ae7f2bSJakub Kicinski if (!imm || !~imm) 937d9ae7f2bSJakub Kicinski return; 938d9ae7f2bSJakub Kicinski } 939d9ae7f2bSJakub Kicinski 940d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm, imm_b(nfp_prog)); 941d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_a(dst), alu_op, tmp_reg); 942d9ae7f2bSJakub Kicinski } 943d9ae7f2bSJakub Kicinski 944d9ae7f2bSJakub Kicinski static int 945d9ae7f2bSJakub Kicinski wrp_alu64_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 946d9ae7f2bSJakub Kicinski enum alu_op alu_op, bool skip) 947d9ae7f2bSJakub Kicinski { 948d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 949d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 950d9ae7f2bSJakub Kicinski 951d9ae7f2bSJakub Kicinski if (skip) { 952d9ae7f2bSJakub Kicinski meta->skip = true; 953d9ae7f2bSJakub Kicinski return 0; 954d9ae7f2bSJakub Kicinski } 955d9ae7f2bSJakub Kicinski 956d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, alu_op, imm & ~0U); 957d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2 + 1, alu_op, imm >> 32); 958d9ae7f2bSJakub Kicinski 959d9ae7f2bSJakub Kicinski return 0; 960d9ae7f2bSJakub Kicinski } 961d9ae7f2bSJakub Kicinski 962d9ae7f2bSJakub Kicinski static int 963d9ae7f2bSJakub Kicinski wrp_alu64_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 964d9ae7f2bSJakub Kicinski enum alu_op alu_op) 965d9ae7f2bSJakub Kicinski { 966d9ae7f2bSJakub Kicinski u8 dst = meta->insn.dst_reg * 2, src = meta->insn.src_reg * 2; 967d9ae7f2bSJakub Kicinski 968d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_a(dst), alu_op, reg_b(src)); 969d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst + 1), 970d9ae7f2bSJakub Kicinski reg_a(dst + 1), alu_op, reg_b(src + 1)); 971d9ae7f2bSJakub Kicinski 972d9ae7f2bSJakub Kicinski return 0; 973d9ae7f2bSJakub Kicinski } 974d9ae7f2bSJakub Kicinski 975d9ae7f2bSJakub Kicinski static int 976d9ae7f2bSJakub Kicinski wrp_alu32_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 977d9ae7f2bSJakub Kicinski enum alu_op alu_op, bool skip) 978d9ae7f2bSJakub Kicinski { 979d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 980d9ae7f2bSJakub Kicinski 981d9ae7f2bSJakub Kicinski if (skip) { 982d9ae7f2bSJakub Kicinski meta->skip = true; 983d9ae7f2bSJakub Kicinski return 0; 984d9ae7f2bSJakub Kicinski } 985d9ae7f2bSJakub Kicinski 986d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, alu_op, insn->imm); 987d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 988d9ae7f2bSJakub Kicinski 989d9ae7f2bSJakub Kicinski return 0; 990d9ae7f2bSJakub Kicinski } 991d9ae7f2bSJakub Kicinski 992d9ae7f2bSJakub Kicinski static int 993d9ae7f2bSJakub Kicinski wrp_alu32_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 994d9ae7f2bSJakub Kicinski enum alu_op alu_op) 995d9ae7f2bSJakub Kicinski { 996d9ae7f2bSJakub Kicinski u8 dst = meta->insn.dst_reg * 2, src = meta->insn.src_reg * 2; 997d9ae7f2bSJakub Kicinski 998d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_a(dst), alu_op, reg_b(src)); 999d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 1000d9ae7f2bSJakub Kicinski 1001d9ae7f2bSJakub Kicinski return 0; 1002d9ae7f2bSJakub Kicinski } 1003d9ae7f2bSJakub Kicinski 1004d9ae7f2bSJakub Kicinski static void 1005d9ae7f2bSJakub Kicinski wrp_test_reg_one(struct nfp_prog *nfp_prog, u8 dst, enum alu_op alu_op, u8 src, 1006d9ae7f2bSJakub Kicinski enum br_mask br_mask, u16 off) 1007d9ae7f2bSJakub Kicinski { 1008d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(dst), alu_op, reg_b(src)); 1009d9ae7f2bSJakub Kicinski emit_br(nfp_prog, br_mask, off, 0); 1010d9ae7f2bSJakub Kicinski } 1011d9ae7f2bSJakub Kicinski 1012d9ae7f2bSJakub Kicinski static int 1013d9ae7f2bSJakub Kicinski wrp_test_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1014d9ae7f2bSJakub Kicinski enum alu_op alu_op, enum br_mask br_mask) 1015d9ae7f2bSJakub Kicinski { 1016d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1017d9ae7f2bSJakub Kicinski 1018d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 1019d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1020d9ae7f2bSJakub Kicinski 1021d9ae7f2bSJakub Kicinski wrp_test_reg_one(nfp_prog, insn->dst_reg * 2, alu_op, 1022d9ae7f2bSJakub Kicinski insn->src_reg * 2, br_mask, insn->off); 1023d9ae7f2bSJakub Kicinski wrp_test_reg_one(nfp_prog, insn->dst_reg * 2 + 1, alu_op, 1024d9ae7f2bSJakub Kicinski insn->src_reg * 2 + 1, br_mask, insn->off); 1025d9ae7f2bSJakub Kicinski 1026d9ae7f2bSJakub Kicinski return 0; 1027d9ae7f2bSJakub Kicinski } 1028d9ae7f2bSJakub Kicinski 1029d9ae7f2bSJakub Kicinski static int 1030d9ae7f2bSJakub Kicinski wrp_cmp_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1031d9ae7f2bSJakub Kicinski enum br_mask br_mask, bool swap) 1032d9ae7f2bSJakub Kicinski { 1033d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1034d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1035d9ae7f2bSJakub Kicinski u8 reg = insn->dst_reg * 2; 1036b3f868dfSJakub Kicinski swreg tmp_reg; 1037d9ae7f2bSJakub Kicinski 1038d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 1039d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1040d9ae7f2bSJakub Kicinski 1041d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 1042d9ae7f2bSJakub Kicinski if (!swap) 1043d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(reg), ALU_OP_SUB, tmp_reg); 1044d9ae7f2bSJakub Kicinski else 1045d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), tmp_reg, ALU_OP_SUB, reg_a(reg)); 1046d9ae7f2bSJakub Kicinski 1047d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 1048d9ae7f2bSJakub Kicinski if (!swap) 1049d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1050d9ae7f2bSJakub Kicinski reg_a(reg + 1), ALU_OP_SUB_C, tmp_reg); 1051d9ae7f2bSJakub Kicinski else 1052d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1053d9ae7f2bSJakub Kicinski tmp_reg, ALU_OP_SUB_C, reg_a(reg + 1)); 1054d9ae7f2bSJakub Kicinski 1055d9ae7f2bSJakub Kicinski emit_br(nfp_prog, br_mask, insn->off, 0); 1056d9ae7f2bSJakub Kicinski 1057d9ae7f2bSJakub Kicinski return 0; 1058d9ae7f2bSJakub Kicinski } 1059d9ae7f2bSJakub Kicinski 1060d9ae7f2bSJakub Kicinski static int 1061d9ae7f2bSJakub Kicinski wrp_cmp_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1062d9ae7f2bSJakub Kicinski enum br_mask br_mask, bool swap) 1063d9ae7f2bSJakub Kicinski { 1064d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 106526fa818dSJakub Kicinski u8 areg, breg; 106626fa818dSJakub Kicinski 106726fa818dSJakub Kicinski areg = insn->dst_reg * 2; 106826fa818dSJakub Kicinski breg = insn->src_reg * 2; 1069d9ae7f2bSJakub Kicinski 1070d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 1071d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1072d9ae7f2bSJakub Kicinski 1073d9ae7f2bSJakub Kicinski if (swap) { 1074d9ae7f2bSJakub Kicinski areg ^= breg; 1075d9ae7f2bSJakub Kicinski breg ^= areg; 1076d9ae7f2bSJakub Kicinski areg ^= breg; 1077d9ae7f2bSJakub Kicinski } 1078d9ae7f2bSJakub Kicinski 1079d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(areg), ALU_OP_SUB, reg_b(breg)); 1080d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1081d9ae7f2bSJakub Kicinski reg_a(areg + 1), ALU_OP_SUB_C, reg_b(breg + 1)); 1082d9ae7f2bSJakub Kicinski emit_br(nfp_prog, br_mask, insn->off, 0); 1083d9ae7f2bSJakub Kicinski 1084d9ae7f2bSJakub Kicinski return 0; 1085d9ae7f2bSJakub Kicinski } 1086d9ae7f2bSJakub Kicinski 10873119d1fdSJakub Kicinski static void wrp_end32(struct nfp_prog *nfp_prog, swreg reg_in, u8 gpr_out) 10883119d1fdSJakub Kicinski { 10893119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr_out), 0xf, reg_in, 10903119d1fdSJakub Kicinski SHF_SC_R_ROT, 8); 10913119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr_out), 0x5, reg_a(gpr_out), 10923119d1fdSJakub Kicinski SHF_SC_R_ROT, 16); 10933119d1fdSJakub Kicinski } 10943119d1fdSJakub Kicinski 1095d9ae7f2bSJakub Kicinski /* --- Callbacks --- */ 1096d9ae7f2bSJakub Kicinski static int mov_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1097d9ae7f2bSJakub Kicinski { 1098d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1099d9ae7f2bSJakub Kicinski 1100d9ae7f2bSJakub Kicinski wrp_reg_mov(nfp_prog, insn->dst_reg * 2, insn->src_reg * 2); 1101d9ae7f2bSJakub Kicinski wrp_reg_mov(nfp_prog, insn->dst_reg * 2 + 1, insn->src_reg * 2 + 1); 1102d9ae7f2bSJakub Kicinski 1103d9ae7f2bSJakub Kicinski return 0; 1104d9ae7f2bSJakub Kicinski } 1105d9ae7f2bSJakub Kicinski 1106d9ae7f2bSJakub Kicinski static int mov_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1107d9ae7f2bSJakub Kicinski { 1108d9ae7f2bSJakub Kicinski u64 imm = meta->insn.imm; /* sign extend */ 1109d9ae7f2bSJakub Kicinski 1110d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2), imm & ~0U); 1111d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), imm >> 32); 1112d9ae7f2bSJakub Kicinski 1113d9ae7f2bSJakub Kicinski return 0; 1114d9ae7f2bSJakub Kicinski } 1115d9ae7f2bSJakub Kicinski 1116d9ae7f2bSJakub Kicinski static int xor_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1117d9ae7f2bSJakub Kicinski { 1118d9ae7f2bSJakub Kicinski return wrp_alu64_reg(nfp_prog, meta, ALU_OP_XOR); 1119d9ae7f2bSJakub Kicinski } 1120d9ae7f2bSJakub Kicinski 1121d9ae7f2bSJakub Kicinski static int xor_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1122d9ae7f2bSJakub Kicinski { 1123d9ae7f2bSJakub Kicinski return wrp_alu64_imm(nfp_prog, meta, ALU_OP_XOR, !meta->insn.imm); 1124d9ae7f2bSJakub Kicinski } 1125d9ae7f2bSJakub Kicinski 1126d9ae7f2bSJakub Kicinski static int and_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1127d9ae7f2bSJakub Kicinski { 1128d9ae7f2bSJakub Kicinski return wrp_alu64_reg(nfp_prog, meta, ALU_OP_AND); 1129d9ae7f2bSJakub Kicinski } 1130d9ae7f2bSJakub Kicinski 1131d9ae7f2bSJakub Kicinski static int and_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1132d9ae7f2bSJakub Kicinski { 1133d9ae7f2bSJakub Kicinski return wrp_alu64_imm(nfp_prog, meta, ALU_OP_AND, !~meta->insn.imm); 1134d9ae7f2bSJakub Kicinski } 1135d9ae7f2bSJakub Kicinski 1136d9ae7f2bSJakub Kicinski static int or_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1137d9ae7f2bSJakub Kicinski { 1138d9ae7f2bSJakub Kicinski return wrp_alu64_reg(nfp_prog, meta, ALU_OP_OR); 1139d9ae7f2bSJakub Kicinski } 1140d9ae7f2bSJakub Kicinski 1141d9ae7f2bSJakub Kicinski static int or_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1142d9ae7f2bSJakub Kicinski { 1143d9ae7f2bSJakub Kicinski return wrp_alu64_imm(nfp_prog, meta, ALU_OP_OR, !meta->insn.imm); 1144d9ae7f2bSJakub Kicinski } 1145d9ae7f2bSJakub Kicinski 1146d9ae7f2bSJakub Kicinski static int add_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1147d9ae7f2bSJakub Kicinski { 1148d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1149d9ae7f2bSJakub Kicinski 1150d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2), 1151d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_ADD, 1152d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2)); 1153d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 1154d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_ADD_C, 1155d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2 + 1)); 1156d9ae7f2bSJakub Kicinski 1157d9ae7f2bSJakub Kicinski return 0; 1158d9ae7f2bSJakub Kicinski } 1159d9ae7f2bSJakub Kicinski 1160d9ae7f2bSJakub Kicinski static int add_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1161d9ae7f2bSJakub Kicinski { 1162d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1163d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1164d9ae7f2bSJakub Kicinski 1165d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, ALU_OP_ADD, imm & ~0U); 1166d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2 + 1, ALU_OP_ADD_C, imm >> 32); 1167d9ae7f2bSJakub Kicinski 1168d9ae7f2bSJakub Kicinski return 0; 1169d9ae7f2bSJakub Kicinski } 1170d9ae7f2bSJakub Kicinski 1171d9ae7f2bSJakub Kicinski static int sub_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1172d9ae7f2bSJakub Kicinski { 1173d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1174d9ae7f2bSJakub Kicinski 1175d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2), 1176d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_SUB, 1177d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2)); 1178d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 1179d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_SUB_C, 1180d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2 + 1)); 1181d9ae7f2bSJakub Kicinski 1182d9ae7f2bSJakub Kicinski return 0; 1183d9ae7f2bSJakub Kicinski } 1184d9ae7f2bSJakub Kicinski 1185d9ae7f2bSJakub Kicinski static int sub_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1186d9ae7f2bSJakub Kicinski { 1187d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1188d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1189d9ae7f2bSJakub Kicinski 1190d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, ALU_OP_SUB, imm & ~0U); 1191d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2 + 1, ALU_OP_SUB_C, imm >> 32); 1192d9ae7f2bSJakub Kicinski 1193d9ae7f2bSJakub Kicinski return 0; 1194d9ae7f2bSJakub Kicinski } 1195d9ae7f2bSJakub Kicinski 1196d9ae7f2bSJakub Kicinski static int shl_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1197d9ae7f2bSJakub Kicinski { 1198d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 11993cae1319SJakub Kicinski u8 dst = insn->dst_reg * 2; 1200d9ae7f2bSJakub Kicinski 12013cae1319SJakub Kicinski if (insn->imm < 32) { 12023cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst + 1), 12033cae1319SJakub Kicinski reg_a(dst + 1), SHF_OP_NONE, reg_b(dst), 12043cae1319SJakub Kicinski SHF_SC_R_DSHF, 32 - insn->imm); 12053cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst), 12063cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst), 12073cae1319SJakub Kicinski SHF_SC_L_SHF, insn->imm); 12083cae1319SJakub Kicinski } else if (insn->imm == 32) { 12093cae1319SJakub Kicinski wrp_reg_mov(nfp_prog, dst + 1, dst); 12103cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), 0); 12113cae1319SJakub Kicinski } else if (insn->imm > 32) { 12123cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst + 1), 12133cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst), 12143cae1319SJakub Kicinski SHF_SC_L_SHF, insn->imm - 32); 12153cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), 0); 12163cae1319SJakub Kicinski } 1217d9ae7f2bSJakub Kicinski 1218d9ae7f2bSJakub Kicinski return 0; 1219d9ae7f2bSJakub Kicinski } 1220d9ae7f2bSJakub Kicinski 1221d9ae7f2bSJakub Kicinski static int shr_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1222d9ae7f2bSJakub Kicinski { 1223d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 12243cae1319SJakub Kicinski u8 dst = insn->dst_reg * 2; 1225d9ae7f2bSJakub Kicinski 12263cae1319SJakub Kicinski if (insn->imm < 32) { 12273cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst), 12283cae1319SJakub Kicinski reg_a(dst + 1), SHF_OP_NONE, reg_b(dst), 12293cae1319SJakub Kicinski SHF_SC_R_DSHF, insn->imm); 12303cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst + 1), 12313cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst + 1), 12323cae1319SJakub Kicinski SHF_SC_R_SHF, insn->imm); 12333cae1319SJakub Kicinski } else if (insn->imm == 32) { 12343cae1319SJakub Kicinski wrp_reg_mov(nfp_prog, dst, dst + 1); 12353cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst + 1), 0); 12363cae1319SJakub Kicinski } else if (insn->imm > 32) { 12373cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst), 12383cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst + 1), 12393cae1319SJakub Kicinski SHF_SC_R_SHF, insn->imm - 32); 12403cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst + 1), 0); 12413cae1319SJakub Kicinski } 1242d9ae7f2bSJakub Kicinski 1243d9ae7f2bSJakub Kicinski return 0; 1244d9ae7f2bSJakub Kicinski } 1245d9ae7f2bSJakub Kicinski 1246d9ae7f2bSJakub Kicinski static int mov_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1247d9ae7f2bSJakub Kicinski { 1248d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1249d9ae7f2bSJakub Kicinski 1250d9ae7f2bSJakub Kicinski wrp_reg_mov(nfp_prog, insn->dst_reg * 2, insn->src_reg * 2); 1251d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 1252d9ae7f2bSJakub Kicinski 1253d9ae7f2bSJakub Kicinski return 0; 1254d9ae7f2bSJakub Kicinski } 1255d9ae7f2bSJakub Kicinski 1256d9ae7f2bSJakub Kicinski static int mov_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1257d9ae7f2bSJakub Kicinski { 1258d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1259d9ae7f2bSJakub Kicinski 1260d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2), insn->imm); 1261d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 1262d9ae7f2bSJakub Kicinski 1263d9ae7f2bSJakub Kicinski return 0; 1264d9ae7f2bSJakub Kicinski } 1265d9ae7f2bSJakub Kicinski 1266d9ae7f2bSJakub Kicinski static int xor_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1267d9ae7f2bSJakub Kicinski { 1268d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_XOR); 1269d9ae7f2bSJakub Kicinski } 1270d9ae7f2bSJakub Kicinski 1271d9ae7f2bSJakub Kicinski static int xor_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1272d9ae7f2bSJakub Kicinski { 1273d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_XOR, !~meta->insn.imm); 1274d9ae7f2bSJakub Kicinski } 1275d9ae7f2bSJakub Kicinski 1276d9ae7f2bSJakub Kicinski static int and_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1277d9ae7f2bSJakub Kicinski { 1278d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_AND); 1279d9ae7f2bSJakub Kicinski } 1280d9ae7f2bSJakub Kicinski 1281d9ae7f2bSJakub Kicinski static int and_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1282d9ae7f2bSJakub Kicinski { 1283d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_AND, !~meta->insn.imm); 1284d9ae7f2bSJakub Kicinski } 1285d9ae7f2bSJakub Kicinski 1286d9ae7f2bSJakub Kicinski static int or_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1287d9ae7f2bSJakub Kicinski { 1288d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_OR); 1289d9ae7f2bSJakub Kicinski } 1290d9ae7f2bSJakub Kicinski 1291d9ae7f2bSJakub Kicinski static int or_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1292d9ae7f2bSJakub Kicinski { 1293d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_OR, !meta->insn.imm); 1294d9ae7f2bSJakub Kicinski } 1295d9ae7f2bSJakub Kicinski 1296d9ae7f2bSJakub Kicinski static int add_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1297d9ae7f2bSJakub Kicinski { 1298d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_ADD); 1299d9ae7f2bSJakub Kicinski } 1300d9ae7f2bSJakub Kicinski 1301d9ae7f2bSJakub Kicinski static int add_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1302d9ae7f2bSJakub Kicinski { 1303d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_ADD, !meta->insn.imm); 1304d9ae7f2bSJakub Kicinski } 1305d9ae7f2bSJakub Kicinski 1306d9ae7f2bSJakub Kicinski static int sub_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1307d9ae7f2bSJakub Kicinski { 1308d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_SUB); 1309d9ae7f2bSJakub Kicinski } 1310d9ae7f2bSJakub Kicinski 1311d9ae7f2bSJakub Kicinski static int sub_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1312d9ae7f2bSJakub Kicinski { 1313d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_SUB, !meta->insn.imm); 1314d9ae7f2bSJakub Kicinski } 1315d9ae7f2bSJakub Kicinski 1316d9ae7f2bSJakub Kicinski static int shl_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1317d9ae7f2bSJakub Kicinski { 1318d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1319d9ae7f2bSJakub Kicinski 1320d9ae7f2bSJakub Kicinski if (!insn->imm) 1321d9ae7f2bSJakub Kicinski return 1; /* TODO: zero shift means indirect */ 1322d9ae7f2bSJakub Kicinski 1323d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_both(insn->dst_reg * 2), 1324d9ae7f2bSJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(insn->dst_reg * 2), 1325d9ae7f2bSJakub Kicinski SHF_SC_L_SHF, insn->imm); 1326d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 1327d9ae7f2bSJakub Kicinski 1328d9ae7f2bSJakub Kicinski return 0; 1329d9ae7f2bSJakub Kicinski } 1330d9ae7f2bSJakub Kicinski 13313119d1fdSJakub Kicinski static int end_reg32(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 13323119d1fdSJakub Kicinski { 13333119d1fdSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 13343119d1fdSJakub Kicinski u8 gpr = insn->dst_reg * 2; 13353119d1fdSJakub Kicinski 13363119d1fdSJakub Kicinski switch (insn->imm) { 13373119d1fdSJakub Kicinski case 16: 13383119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr), 0x9, reg_b(gpr), 13393119d1fdSJakub Kicinski SHF_SC_R_ROT, 8); 13403119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr), 0xe, reg_a(gpr), 13413119d1fdSJakub Kicinski SHF_SC_R_SHF, 16); 13423119d1fdSJakub Kicinski 13433119d1fdSJakub Kicinski wrp_immed(nfp_prog, reg_both(gpr + 1), 0); 13443119d1fdSJakub Kicinski break; 13453119d1fdSJakub Kicinski case 32: 13463119d1fdSJakub Kicinski wrp_end32(nfp_prog, reg_a(gpr), gpr); 13473119d1fdSJakub Kicinski wrp_immed(nfp_prog, reg_both(gpr + 1), 0); 13483119d1fdSJakub Kicinski break; 13493119d1fdSJakub Kicinski case 64: 13503119d1fdSJakub Kicinski wrp_mov(nfp_prog, imm_a(nfp_prog), reg_b(gpr + 1)); 13513119d1fdSJakub Kicinski 13523119d1fdSJakub Kicinski wrp_end32(nfp_prog, reg_a(gpr), gpr + 1); 13533119d1fdSJakub Kicinski wrp_end32(nfp_prog, imm_a(nfp_prog), gpr); 13543119d1fdSJakub Kicinski break; 13553119d1fdSJakub Kicinski } 13563119d1fdSJakub Kicinski 13573119d1fdSJakub Kicinski return 0; 13583119d1fdSJakub Kicinski } 13593119d1fdSJakub Kicinski 1360d9ae7f2bSJakub Kicinski static int imm_ld8_part2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1361d9ae7f2bSJakub Kicinski { 1362d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(nfp_meta_prev(meta)->insn.dst_reg * 2 + 1), 1363d9ae7f2bSJakub Kicinski meta->insn.imm); 1364d9ae7f2bSJakub Kicinski 1365d9ae7f2bSJakub Kicinski return 0; 1366d9ae7f2bSJakub Kicinski } 1367d9ae7f2bSJakub Kicinski 1368d9ae7f2bSJakub Kicinski static int imm_ld8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1369d9ae7f2bSJakub Kicinski { 1370d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1371d9ae7f2bSJakub Kicinski 1372d9ae7f2bSJakub Kicinski meta->double_cb = imm_ld8_part2; 1373d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2), insn->imm); 1374d9ae7f2bSJakub Kicinski 1375d9ae7f2bSJakub Kicinski return 0; 1376d9ae7f2bSJakub Kicinski } 1377d9ae7f2bSJakub Kicinski 1378d9ae7f2bSJakub Kicinski static int data_ld1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1379d9ae7f2bSJakub Kicinski { 1380d9ae7f2bSJakub Kicinski return construct_data_ld(nfp_prog, meta->insn.imm, 1); 1381d9ae7f2bSJakub Kicinski } 1382d9ae7f2bSJakub Kicinski 1383d9ae7f2bSJakub Kicinski static int data_ld2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1384d9ae7f2bSJakub Kicinski { 1385d9ae7f2bSJakub Kicinski return construct_data_ld(nfp_prog, meta->insn.imm, 2); 1386d9ae7f2bSJakub Kicinski } 1387d9ae7f2bSJakub Kicinski 1388d9ae7f2bSJakub Kicinski static int data_ld4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1389d9ae7f2bSJakub Kicinski { 1390d9ae7f2bSJakub Kicinski return construct_data_ld(nfp_prog, meta->insn.imm, 4); 1391d9ae7f2bSJakub Kicinski } 1392d9ae7f2bSJakub Kicinski 1393d9ae7f2bSJakub Kicinski static int data_ind_ld1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1394d9ae7f2bSJakub Kicinski { 1395d9ae7f2bSJakub Kicinski return construct_data_ind_ld(nfp_prog, meta->insn.imm, 13960a793977SJakub Kicinski meta->insn.src_reg * 2, 1); 1397d9ae7f2bSJakub Kicinski } 1398d9ae7f2bSJakub Kicinski 1399d9ae7f2bSJakub Kicinski static int data_ind_ld2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1400d9ae7f2bSJakub Kicinski { 1401d9ae7f2bSJakub Kicinski return construct_data_ind_ld(nfp_prog, meta->insn.imm, 14020a793977SJakub Kicinski meta->insn.src_reg * 2, 2); 1403d9ae7f2bSJakub Kicinski } 1404d9ae7f2bSJakub Kicinski 1405d9ae7f2bSJakub Kicinski static int data_ind_ld4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1406d9ae7f2bSJakub Kicinski { 1407d9ae7f2bSJakub Kicinski return construct_data_ind_ld(nfp_prog, meta->insn.imm, 14080a793977SJakub Kicinski meta->insn.src_reg * 2, 4); 1409d9ae7f2bSJakub Kicinski } 1410d9ae7f2bSJakub Kicinski 1411a82b23fbSJakub Kicinski static int 1412a82b23fbSJakub Kicinski mem_ldx_stack(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1413d3488480SJakub Kicinski unsigned int size, unsigned int ptr_off) 1414a82b23fbSJakub Kicinski { 1415d3488480SJakub Kicinski return mem_op_stack(nfp_prog, meta, size, ptr_off, 1416d3488480SJakub Kicinski meta->insn.dst_reg * 2, true, wrp_lmem_load); 1417a82b23fbSJakub Kicinski } 1418a82b23fbSJakub Kicinski 1419943c57b9SJakub Kicinski static int mem_ldx_skb(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1420943c57b9SJakub Kicinski u8 size) 1421d9ae7f2bSJakub Kicinski { 1422bfddbc8aSJakub Kicinski swreg dst = reg_both(meta->insn.dst_reg * 2); 1423bfddbc8aSJakub Kicinski 1424943c57b9SJakub Kicinski switch (meta->insn.off) { 1425943c57b9SJakub Kicinski case offsetof(struct sk_buff, len): 1426943c57b9SJakub Kicinski if (size != FIELD_SIZEOF(struct sk_buff, len)) 1427943c57b9SJakub Kicinski return -EOPNOTSUPP; 1428bfddbc8aSJakub Kicinski wrp_mov(nfp_prog, dst, plen_reg(nfp_prog)); 1429bfddbc8aSJakub Kicinski break; 1430bfddbc8aSJakub Kicinski case offsetof(struct sk_buff, data): 1431bfddbc8aSJakub Kicinski if (size != sizeof(void *)) 1432bfddbc8aSJakub Kicinski return -EOPNOTSUPP; 1433bfddbc8aSJakub Kicinski wrp_mov(nfp_prog, dst, pptr_reg(nfp_prog)); 1434bfddbc8aSJakub Kicinski break; 1435bfddbc8aSJakub Kicinski case offsetof(struct sk_buff, cb) + 1436bfddbc8aSJakub Kicinski offsetof(struct bpf_skb_data_end, data_end): 1437bfddbc8aSJakub Kicinski if (size != sizeof(void *)) 1438bfddbc8aSJakub Kicinski return -EOPNOTSUPP; 1439bfddbc8aSJakub Kicinski emit_alu(nfp_prog, dst, 1440bfddbc8aSJakub Kicinski plen_reg(nfp_prog), ALU_OP_ADD, pptr_reg(nfp_prog)); 1441943c57b9SJakub Kicinski break; 1442943c57b9SJakub Kicinski default: 1443d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1444943c57b9SJakub Kicinski } 1445943c57b9SJakub Kicinski 1446943c57b9SJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 1447d9ae7f2bSJakub Kicinski 1448d9ae7f2bSJakub Kicinski return 0; 1449d9ae7f2bSJakub Kicinski } 1450d9ae7f2bSJakub Kicinski 1451943c57b9SJakub Kicinski static int mem_ldx_xdp(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1452943c57b9SJakub Kicinski u8 size) 1453d9ae7f2bSJakub Kicinski { 1454b3f868dfSJakub Kicinski swreg dst = reg_both(meta->insn.dst_reg * 2); 1455d9ae7f2bSJakub Kicinski 1456943c57b9SJakub Kicinski if (size != sizeof(void *)) 1457943c57b9SJakub Kicinski return -EINVAL; 1458d9ae7f2bSJakub Kicinski 1459943c57b9SJakub Kicinski switch (meta->insn.off) { 1460943c57b9SJakub Kicinski case offsetof(struct xdp_buff, data): 1461c000dfb5SJakub Kicinski wrp_mov(nfp_prog, dst, pptr_reg(nfp_prog)); 1462943c57b9SJakub Kicinski break; 1463943c57b9SJakub Kicinski case offsetof(struct xdp_buff, data_end): 1464943c57b9SJakub Kicinski emit_alu(nfp_prog, dst, 1465943c57b9SJakub Kicinski plen_reg(nfp_prog), ALU_OP_ADD, pptr_reg(nfp_prog)); 1466943c57b9SJakub Kicinski break; 1467943c57b9SJakub Kicinski default: 1468943c57b9SJakub Kicinski return -EOPNOTSUPP; 1469943c57b9SJakub Kicinski } 1470d9ae7f2bSJakub Kicinski 1471943c57b9SJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 1472d9ae7f2bSJakub Kicinski 1473d9ae7f2bSJakub Kicinski return 0; 1474d9ae7f2bSJakub Kicinski } 1475d9ae7f2bSJakub Kicinski 14762ca71441SJakub Kicinski static int 14772ca71441SJakub Kicinski mem_ldx_data(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 14782ca71441SJakub Kicinski unsigned int size) 14792ca71441SJakub Kicinski { 14802ca71441SJakub Kicinski swreg tmp_reg; 14812ca71441SJakub Kicinski 14822ca71441SJakub Kicinski tmp_reg = re_load_imm_any(nfp_prog, meta->insn.off, imm_b(nfp_prog)); 14832ca71441SJakub Kicinski 14842ca71441SJakub Kicinski return data_ld_host_order(nfp_prog, meta->insn.src_reg * 2, tmp_reg, 14852ca71441SJakub Kicinski meta->insn.dst_reg * 2, size); 14862ca71441SJakub Kicinski } 14872ca71441SJakub Kicinski 14882ca71441SJakub Kicinski static int 14892ca71441SJakub Kicinski mem_ldx(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 14902ca71441SJakub Kicinski unsigned int size) 14912ca71441SJakub Kicinski { 14922ca71441SJakub Kicinski if (meta->ptr.type == PTR_TO_CTX) { 14932ca71441SJakub Kicinski if (nfp_prog->act == NN_ACT_XDP) 14942ca71441SJakub Kicinski return mem_ldx_xdp(nfp_prog, meta, size); 14952ca71441SJakub Kicinski else 14962ca71441SJakub Kicinski return mem_ldx_skb(nfp_prog, meta, size); 14972ca71441SJakub Kicinski } 14982ca71441SJakub Kicinski 14992ca71441SJakub Kicinski if (meta->ptr.type == PTR_TO_PACKET) 15002ca71441SJakub Kicinski return mem_ldx_data(nfp_prog, meta, size); 15012ca71441SJakub Kicinski 1502a82b23fbSJakub Kicinski if (meta->ptr.type == PTR_TO_STACK) 1503d3488480SJakub Kicinski return mem_ldx_stack(nfp_prog, meta, size, 1504d3488480SJakub Kicinski meta->ptr.off + meta->ptr.var_off.value); 1505a82b23fbSJakub Kicinski 15062ca71441SJakub Kicinski return -EOPNOTSUPP; 15072ca71441SJakub Kicinski } 15082ca71441SJakub Kicinski 15092ca71441SJakub Kicinski static int mem_ldx1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 15102ca71441SJakub Kicinski { 15112ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 1); 15122ca71441SJakub Kicinski } 15132ca71441SJakub Kicinski 15142ca71441SJakub Kicinski static int mem_ldx2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 15152ca71441SJakub Kicinski { 15162ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 2); 15172ca71441SJakub Kicinski } 15182ca71441SJakub Kicinski 1519d9ae7f2bSJakub Kicinski static int mem_ldx4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1520d9ae7f2bSJakub Kicinski { 15212ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 4); 15222ca71441SJakub Kicinski } 15232ca71441SJakub Kicinski 15242ca71441SJakub Kicinski static int mem_ldx8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 15252ca71441SJakub Kicinski { 15262ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 8); 1527d9ae7f2bSJakub Kicinski } 1528d9ae7f2bSJakub Kicinski 1529e663fe38SJakub Kicinski static int 1530e663fe38SJakub Kicinski mem_st_data(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1531e663fe38SJakub Kicinski unsigned int size) 1532d9ae7f2bSJakub Kicinski { 1533e663fe38SJakub Kicinski u64 imm = meta->insn.imm; /* sign extend */ 1534e663fe38SJakub Kicinski swreg off_reg; 1535e663fe38SJakub Kicinski 1536e663fe38SJakub Kicinski off_reg = re_load_imm_any(nfp_prog, meta->insn.off, imm_b(nfp_prog)); 1537e663fe38SJakub Kicinski 1538e663fe38SJakub Kicinski return data_st_host_order(nfp_prog, meta->insn.dst_reg * 2, off_reg, 1539e663fe38SJakub Kicinski imm, size); 1540e663fe38SJakub Kicinski } 1541e663fe38SJakub Kicinski 1542e663fe38SJakub Kicinski static int mem_st(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1543e663fe38SJakub Kicinski unsigned int size) 1544e663fe38SJakub Kicinski { 1545e663fe38SJakub Kicinski if (meta->ptr.type == PTR_TO_PACKET) 1546e663fe38SJakub Kicinski return mem_st_data(nfp_prog, meta, size); 1547e663fe38SJakub Kicinski 1548d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1549d9ae7f2bSJakub Kicinski } 1550d9ae7f2bSJakub Kicinski 1551e663fe38SJakub Kicinski static int mem_st1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1552d9ae7f2bSJakub Kicinski { 1553e663fe38SJakub Kicinski return mem_st(nfp_prog, meta, 1); 1554e663fe38SJakub Kicinski } 1555e663fe38SJakub Kicinski 1556e663fe38SJakub Kicinski static int mem_st2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1557e663fe38SJakub Kicinski { 1558e663fe38SJakub Kicinski return mem_st(nfp_prog, meta, 2); 1559e663fe38SJakub Kicinski } 1560e663fe38SJakub Kicinski 1561e663fe38SJakub Kicinski static int mem_st4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1562e663fe38SJakub Kicinski { 1563e663fe38SJakub Kicinski return mem_st(nfp_prog, meta, 4); 1564e663fe38SJakub Kicinski } 1565e663fe38SJakub Kicinski 1566e663fe38SJakub Kicinski static int mem_st8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1567e663fe38SJakub Kicinski { 1568e663fe38SJakub Kicinski return mem_st(nfp_prog, meta, 8); 1569e663fe38SJakub Kicinski } 1570e663fe38SJakub Kicinski 1571e663fe38SJakub Kicinski static int 1572e663fe38SJakub Kicinski mem_stx_data(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1573e663fe38SJakub Kicinski unsigned int size) 1574e663fe38SJakub Kicinski { 1575e663fe38SJakub Kicinski swreg off_reg; 1576e663fe38SJakub Kicinski 1577e663fe38SJakub Kicinski off_reg = re_load_imm_any(nfp_prog, meta->insn.off, imm_b(nfp_prog)); 1578e663fe38SJakub Kicinski 1579e663fe38SJakub Kicinski return data_stx_host_order(nfp_prog, meta->insn.dst_reg * 2, off_reg, 1580e663fe38SJakub Kicinski meta->insn.src_reg * 2, size); 1581e663fe38SJakub Kicinski } 1582e663fe38SJakub Kicinski 1583e663fe38SJakub Kicinski static int 1584ee9133a8SJakub Kicinski mem_stx_stack(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1585d3488480SJakub Kicinski unsigned int size, unsigned int ptr_off) 1586ee9133a8SJakub Kicinski { 1587d3488480SJakub Kicinski return mem_op_stack(nfp_prog, meta, size, ptr_off, 1588d3488480SJakub Kicinski meta->insn.src_reg * 2, false, wrp_lmem_store); 1589ee9133a8SJakub Kicinski } 1590ee9133a8SJakub Kicinski 1591ee9133a8SJakub Kicinski static int 1592e663fe38SJakub Kicinski mem_stx(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1593e663fe38SJakub Kicinski unsigned int size) 1594e663fe38SJakub Kicinski { 1595e663fe38SJakub Kicinski if (meta->ptr.type == PTR_TO_PACKET) 1596e663fe38SJakub Kicinski return mem_stx_data(nfp_prog, meta, size); 1597e663fe38SJakub Kicinski 1598ee9133a8SJakub Kicinski if (meta->ptr.type == PTR_TO_STACK) 1599d3488480SJakub Kicinski return mem_stx_stack(nfp_prog, meta, size, 1600d3488480SJakub Kicinski meta->ptr.off + meta->ptr.var_off.value); 1601ee9133a8SJakub Kicinski 1602d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1603d9ae7f2bSJakub Kicinski } 1604d9ae7f2bSJakub Kicinski 1605e663fe38SJakub Kicinski static int mem_stx1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1606e663fe38SJakub Kicinski { 1607e663fe38SJakub Kicinski return mem_stx(nfp_prog, meta, 1); 1608e663fe38SJakub Kicinski } 1609e663fe38SJakub Kicinski 1610e663fe38SJakub Kicinski static int mem_stx2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1611e663fe38SJakub Kicinski { 1612e663fe38SJakub Kicinski return mem_stx(nfp_prog, meta, 2); 1613e663fe38SJakub Kicinski } 1614e663fe38SJakub Kicinski 1615d9ae7f2bSJakub Kicinski static int mem_stx4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1616d9ae7f2bSJakub Kicinski { 1617e663fe38SJakub Kicinski return mem_stx(nfp_prog, meta, 4); 1618e663fe38SJakub Kicinski } 16192ca71441SJakub Kicinski 1620e663fe38SJakub Kicinski static int mem_stx8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1621e663fe38SJakub Kicinski { 1622e663fe38SJakub Kicinski return mem_stx(nfp_prog, meta, 8); 1623d9ae7f2bSJakub Kicinski } 1624d9ae7f2bSJakub Kicinski 1625d9ae7f2bSJakub Kicinski static int jump(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1626d9ae7f2bSJakub Kicinski { 1627d9ae7f2bSJakub Kicinski if (meta->insn.off < 0) /* TODO */ 1628d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1629d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_UNC, meta->insn.off, 0); 1630d9ae7f2bSJakub Kicinski 1631d9ae7f2bSJakub Kicinski return 0; 1632d9ae7f2bSJakub Kicinski } 1633d9ae7f2bSJakub Kicinski 1634d9ae7f2bSJakub Kicinski static int jeq_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1635d9ae7f2bSJakub Kicinski { 1636d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1637d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1638b3f868dfSJakub Kicinski swreg or1, or2, tmp_reg; 1639b3f868dfSJakub Kicinski 1640b3f868dfSJakub Kicinski or1 = reg_a(insn->dst_reg * 2); 1641b3f868dfSJakub Kicinski or2 = reg_b(insn->dst_reg * 2 + 1); 1642d9ae7f2bSJakub Kicinski 1643d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 1644d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1645d9ae7f2bSJakub Kicinski 1646d9ae7f2bSJakub Kicinski if (imm & ~0U) { 1647d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 1648d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_a(nfp_prog), 1649d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_XOR, tmp_reg); 1650d9ae7f2bSJakub Kicinski or1 = imm_a(nfp_prog); 1651d9ae7f2bSJakub Kicinski } 1652d9ae7f2bSJakub Kicinski 1653d9ae7f2bSJakub Kicinski if (imm >> 32) { 1654d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 1655d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), 1656d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_XOR, tmp_reg); 1657d9ae7f2bSJakub Kicinski or2 = imm_b(nfp_prog); 1658d9ae7f2bSJakub Kicinski } 1659d9ae7f2bSJakub Kicinski 1660d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), or1, ALU_OP_OR, or2); 1661d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BEQ, insn->off, 0); 1662d9ae7f2bSJakub Kicinski 1663d9ae7f2bSJakub Kicinski return 0; 1664d9ae7f2bSJakub Kicinski } 1665d9ae7f2bSJakub Kicinski 1666d9ae7f2bSJakub Kicinski static int jgt_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1667d9ae7f2bSJakub Kicinski { 166826fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BLO, true); 1669d9ae7f2bSJakub Kicinski } 1670d9ae7f2bSJakub Kicinski 1671d9ae7f2bSJakub Kicinski static int jge_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1672d9ae7f2bSJakub Kicinski { 167326fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BHS, false); 1674d9ae7f2bSJakub Kicinski } 1675d9ae7f2bSJakub Kicinski 16765dd294d4SDaniel Borkmann static int jlt_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 16775dd294d4SDaniel Borkmann { 167826fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BLO, false); 16795dd294d4SDaniel Borkmann } 16805dd294d4SDaniel Borkmann 16815dd294d4SDaniel Borkmann static int jle_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 16825dd294d4SDaniel Borkmann { 168326fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BHS, true); 16845dd294d4SDaniel Borkmann } 16855dd294d4SDaniel Borkmann 1686d9ae7f2bSJakub Kicinski static int jset_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1687d9ae7f2bSJakub Kicinski { 1688d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1689d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1690b3f868dfSJakub Kicinski swreg tmp_reg; 1691d9ae7f2bSJakub Kicinski 1692d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 1693d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1694d9ae7f2bSJakub Kicinski 1695d9ae7f2bSJakub Kicinski if (!imm) { 1696d9ae7f2bSJakub Kicinski meta->skip = true; 1697d9ae7f2bSJakub Kicinski return 0; 1698d9ae7f2bSJakub Kicinski } 1699d9ae7f2bSJakub Kicinski 1700d9ae7f2bSJakub Kicinski if (imm & ~0U) { 1701d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 1702d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1703d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_AND, tmp_reg); 1704d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1705d9ae7f2bSJakub Kicinski } 1706d9ae7f2bSJakub Kicinski 1707d9ae7f2bSJakub Kicinski if (imm >> 32) { 1708d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 1709d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1710d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_AND, tmp_reg); 1711d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1712d9ae7f2bSJakub Kicinski } 1713d9ae7f2bSJakub Kicinski 1714d9ae7f2bSJakub Kicinski return 0; 1715d9ae7f2bSJakub Kicinski } 1716d9ae7f2bSJakub Kicinski 1717d9ae7f2bSJakub Kicinski static int jne_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1718d9ae7f2bSJakub Kicinski { 1719d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1720d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1721b3f868dfSJakub Kicinski swreg tmp_reg; 1722d9ae7f2bSJakub Kicinski 1723d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 1724d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1725d9ae7f2bSJakub Kicinski 1726d9ae7f2bSJakub Kicinski if (!imm) { 1727d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(insn->dst_reg * 2), 1728d9ae7f2bSJakub Kicinski ALU_OP_OR, reg_b(insn->dst_reg * 2 + 1)); 1729d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 173082837370SJakub Kicinski return 0; 1731d9ae7f2bSJakub Kicinski } 1732d9ae7f2bSJakub Kicinski 1733d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 1734d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1735d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_XOR, tmp_reg); 1736d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1737d9ae7f2bSJakub Kicinski 1738d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 1739d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1740d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_XOR, tmp_reg); 1741d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1742d9ae7f2bSJakub Kicinski 1743d9ae7f2bSJakub Kicinski return 0; 1744d9ae7f2bSJakub Kicinski } 1745d9ae7f2bSJakub Kicinski 1746d9ae7f2bSJakub Kicinski static int jeq_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1747d9ae7f2bSJakub Kicinski { 1748d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1749d9ae7f2bSJakub Kicinski 1750d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 1751d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1752d9ae7f2bSJakub Kicinski 1753d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_a(nfp_prog), reg_a(insn->dst_reg * 2), 1754d9ae7f2bSJakub Kicinski ALU_OP_XOR, reg_b(insn->src_reg * 2)); 1755d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), reg_a(insn->dst_reg * 2 + 1), 1756d9ae7f2bSJakub Kicinski ALU_OP_XOR, reg_b(insn->src_reg * 2 + 1)); 1757d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1758d9ae7f2bSJakub Kicinski imm_a(nfp_prog), ALU_OP_OR, imm_b(nfp_prog)); 1759d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BEQ, insn->off, 0); 1760d9ae7f2bSJakub Kicinski 1761d9ae7f2bSJakub Kicinski return 0; 1762d9ae7f2bSJakub Kicinski } 1763d9ae7f2bSJakub Kicinski 1764d9ae7f2bSJakub Kicinski static int jgt_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1765d9ae7f2bSJakub Kicinski { 176626fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BLO, true); 1767d9ae7f2bSJakub Kicinski } 1768d9ae7f2bSJakub Kicinski 1769d9ae7f2bSJakub Kicinski static int jge_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1770d9ae7f2bSJakub Kicinski { 177126fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BHS, false); 1772d9ae7f2bSJakub Kicinski } 1773d9ae7f2bSJakub Kicinski 17745dd294d4SDaniel Borkmann static int jlt_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 17755dd294d4SDaniel Borkmann { 177626fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BLO, false); 17775dd294d4SDaniel Borkmann } 17785dd294d4SDaniel Borkmann 17795dd294d4SDaniel Borkmann static int jle_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 17805dd294d4SDaniel Borkmann { 178126fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BHS, true); 17825dd294d4SDaniel Borkmann } 17835dd294d4SDaniel Borkmann 1784d9ae7f2bSJakub Kicinski static int jset_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1785d9ae7f2bSJakub Kicinski { 1786d9ae7f2bSJakub Kicinski return wrp_test_reg(nfp_prog, meta, ALU_OP_AND, BR_BNE); 1787d9ae7f2bSJakub Kicinski } 1788d9ae7f2bSJakub Kicinski 1789d9ae7f2bSJakub Kicinski static int jne_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1790d9ae7f2bSJakub Kicinski { 1791d9ae7f2bSJakub Kicinski return wrp_test_reg(nfp_prog, meta, ALU_OP_XOR, BR_BNE); 1792d9ae7f2bSJakub Kicinski } 1793d9ae7f2bSJakub Kicinski 1794d9ae7f2bSJakub Kicinski static int goto_out(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1795d9ae7f2bSJakub Kicinski { 1796d9ae7f2bSJakub Kicinski wrp_br_special(nfp_prog, BR_UNC, OP_BR_GO_OUT); 1797d9ae7f2bSJakub Kicinski 1798d9ae7f2bSJakub Kicinski return 0; 1799d9ae7f2bSJakub Kicinski } 1800d9ae7f2bSJakub Kicinski 1801d9ae7f2bSJakub Kicinski static const instr_cb_t instr_cb[256] = { 1802d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_MOV | BPF_X] = mov_reg64, 1803d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_MOV | BPF_K] = mov_imm64, 1804d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_XOR | BPF_X] = xor_reg64, 1805d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_XOR | BPF_K] = xor_imm64, 1806d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_AND | BPF_X] = and_reg64, 1807d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_AND | BPF_K] = and_imm64, 1808d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_OR | BPF_X] = or_reg64, 1809d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_OR | BPF_K] = or_imm64, 1810d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_ADD | BPF_X] = add_reg64, 1811d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_ADD | BPF_K] = add_imm64, 1812d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_SUB | BPF_X] = sub_reg64, 1813d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_SUB | BPF_K] = sub_imm64, 1814d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_LSH | BPF_K] = shl_imm64, 1815d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_RSH | BPF_K] = shr_imm64, 1816d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_MOV | BPF_X] = mov_reg, 1817d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_MOV | BPF_K] = mov_imm, 1818d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_XOR | BPF_X] = xor_reg, 1819d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_XOR | BPF_K] = xor_imm, 1820d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_AND | BPF_X] = and_reg, 1821d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_AND | BPF_K] = and_imm, 1822d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_OR | BPF_X] = or_reg, 1823d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_OR | BPF_K] = or_imm, 1824d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_ADD | BPF_X] = add_reg, 1825d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_ADD | BPF_K] = add_imm, 1826d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_SUB | BPF_X] = sub_reg, 1827d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_SUB | BPF_K] = sub_imm, 1828d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_LSH | BPF_K] = shl_imm, 18293119d1fdSJakub Kicinski [BPF_ALU | BPF_END | BPF_X] = end_reg32, 1830d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IMM | BPF_DW] = imm_ld8, 1831d9ae7f2bSJakub Kicinski [BPF_LD | BPF_ABS | BPF_B] = data_ld1, 1832d9ae7f2bSJakub Kicinski [BPF_LD | BPF_ABS | BPF_H] = data_ld2, 1833d9ae7f2bSJakub Kicinski [BPF_LD | BPF_ABS | BPF_W] = data_ld4, 1834d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IND | BPF_B] = data_ind_ld1, 1835d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IND | BPF_H] = data_ind_ld2, 1836d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IND | BPF_W] = data_ind_ld4, 18372ca71441SJakub Kicinski [BPF_LDX | BPF_MEM | BPF_B] = mem_ldx1, 18382ca71441SJakub Kicinski [BPF_LDX | BPF_MEM | BPF_H] = mem_ldx2, 1839d9ae7f2bSJakub Kicinski [BPF_LDX | BPF_MEM | BPF_W] = mem_ldx4, 18402ca71441SJakub Kicinski [BPF_LDX | BPF_MEM | BPF_DW] = mem_ldx8, 1841e663fe38SJakub Kicinski [BPF_STX | BPF_MEM | BPF_B] = mem_stx1, 1842e663fe38SJakub Kicinski [BPF_STX | BPF_MEM | BPF_H] = mem_stx2, 1843d9ae7f2bSJakub Kicinski [BPF_STX | BPF_MEM | BPF_W] = mem_stx4, 1844e663fe38SJakub Kicinski [BPF_STX | BPF_MEM | BPF_DW] = mem_stx8, 1845e663fe38SJakub Kicinski [BPF_ST | BPF_MEM | BPF_B] = mem_st1, 1846e663fe38SJakub Kicinski [BPF_ST | BPF_MEM | BPF_H] = mem_st2, 1847e663fe38SJakub Kicinski [BPF_ST | BPF_MEM | BPF_W] = mem_st4, 1848e663fe38SJakub Kicinski [BPF_ST | BPF_MEM | BPF_DW] = mem_st8, 1849d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JA | BPF_K] = jump, 1850d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JEQ | BPF_K] = jeq_imm, 1851d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGT | BPF_K] = jgt_imm, 1852d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGE | BPF_K] = jge_imm, 18535dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLT | BPF_K] = jlt_imm, 18545dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLE | BPF_K] = jle_imm, 1855d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JSET | BPF_K] = jset_imm, 1856d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JNE | BPF_K] = jne_imm, 1857d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JEQ | BPF_X] = jeq_reg, 1858d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGT | BPF_X] = jgt_reg, 1859d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGE | BPF_X] = jge_reg, 18605dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLT | BPF_X] = jlt_reg, 18615dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLE | BPF_X] = jle_reg, 1862d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JSET | BPF_X] = jset_reg, 1863d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JNE | BPF_X] = jne_reg, 1864d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_EXIT] = goto_out, 1865d9ae7f2bSJakub Kicinski }; 1866d9ae7f2bSJakub Kicinski 1867d9ae7f2bSJakub Kicinski /* --- Misc code --- */ 1868d9ae7f2bSJakub Kicinski static void br_set_offset(u64 *instr, u16 offset) 1869d9ae7f2bSJakub Kicinski { 1870d9ae7f2bSJakub Kicinski u16 addr_lo, addr_hi; 1871d9ae7f2bSJakub Kicinski 1872d9ae7f2bSJakub Kicinski addr_lo = offset & (OP_BR_ADDR_LO >> __bf_shf(OP_BR_ADDR_LO)); 1873d9ae7f2bSJakub Kicinski addr_hi = offset != addr_lo; 1874d9ae7f2bSJakub Kicinski *instr &= ~(OP_BR_ADDR_HI | OP_BR_ADDR_LO); 1875d9ae7f2bSJakub Kicinski *instr |= FIELD_PREP(OP_BR_ADDR_HI, addr_hi); 1876d9ae7f2bSJakub Kicinski *instr |= FIELD_PREP(OP_BR_ADDR_LO, addr_lo); 1877d9ae7f2bSJakub Kicinski } 1878d9ae7f2bSJakub Kicinski 1879d9ae7f2bSJakub Kicinski /* --- Assembler logic --- */ 1880d9ae7f2bSJakub Kicinski static int nfp_fixup_branches(struct nfp_prog *nfp_prog) 1881d9ae7f2bSJakub Kicinski { 1882d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta, *next; 1883d9ae7f2bSJakub Kicinski u32 off, br_idx; 1884d9ae7f2bSJakub Kicinski u32 idx; 1885d9ae7f2bSJakub Kicinski 1886d9ae7f2bSJakub Kicinski nfp_for_each_insn_walk2(nfp_prog, meta, next) { 1887d9ae7f2bSJakub Kicinski if (meta->skip) 1888d9ae7f2bSJakub Kicinski continue; 1889d9ae7f2bSJakub Kicinski if (BPF_CLASS(meta->insn.code) != BPF_JMP) 1890d9ae7f2bSJakub Kicinski continue; 1891d9ae7f2bSJakub Kicinski 1892d9ae7f2bSJakub Kicinski br_idx = nfp_prog_offset_to_index(nfp_prog, next->off) - 1; 1893d9ae7f2bSJakub Kicinski if (!nfp_is_br(nfp_prog->prog[br_idx])) { 1894d9ae7f2bSJakub Kicinski pr_err("Fixup found block not ending in branch %d %02x %016llx!!\n", 1895d9ae7f2bSJakub Kicinski br_idx, meta->insn.code, nfp_prog->prog[br_idx]); 1896d9ae7f2bSJakub Kicinski return -ELOOP; 1897d9ae7f2bSJakub Kicinski } 1898d9ae7f2bSJakub Kicinski /* Leave special branches for later */ 1899d9ae7f2bSJakub Kicinski if (FIELD_GET(OP_BR_SPECIAL, nfp_prog->prog[br_idx])) 1900d9ae7f2bSJakub Kicinski continue; 1901d9ae7f2bSJakub Kicinski 1902d9ae7f2bSJakub Kicinski /* Find the target offset in assembler realm */ 1903d9ae7f2bSJakub Kicinski off = meta->insn.off; 1904d9ae7f2bSJakub Kicinski if (!off) { 1905d9ae7f2bSJakub Kicinski pr_err("Fixup found zero offset!!\n"); 1906d9ae7f2bSJakub Kicinski return -ELOOP; 1907d9ae7f2bSJakub Kicinski } 1908d9ae7f2bSJakub Kicinski 1909d9ae7f2bSJakub Kicinski while (off && nfp_meta_has_next(nfp_prog, next)) { 1910d9ae7f2bSJakub Kicinski next = nfp_meta_next(next); 1911d9ae7f2bSJakub Kicinski off--; 1912d9ae7f2bSJakub Kicinski } 1913d9ae7f2bSJakub Kicinski if (off) { 1914d9ae7f2bSJakub Kicinski pr_err("Fixup found too large jump!! %d\n", off); 1915d9ae7f2bSJakub Kicinski return -ELOOP; 1916d9ae7f2bSJakub Kicinski } 1917d9ae7f2bSJakub Kicinski 1918d9ae7f2bSJakub Kicinski if (next->skip) { 1919d9ae7f2bSJakub Kicinski pr_err("Branch landing on removed instruction!!\n"); 1920d9ae7f2bSJakub Kicinski return -ELOOP; 1921d9ae7f2bSJakub Kicinski } 1922d9ae7f2bSJakub Kicinski 1923d9ae7f2bSJakub Kicinski for (idx = nfp_prog_offset_to_index(nfp_prog, meta->off); 1924d9ae7f2bSJakub Kicinski idx <= br_idx; idx++) { 1925d9ae7f2bSJakub Kicinski if (!nfp_is_br(nfp_prog->prog[idx])) 1926d9ae7f2bSJakub Kicinski continue; 1927d9ae7f2bSJakub Kicinski br_set_offset(&nfp_prog->prog[idx], next->off); 1928d9ae7f2bSJakub Kicinski } 1929d9ae7f2bSJakub Kicinski } 1930d9ae7f2bSJakub Kicinski 1931d9ae7f2bSJakub Kicinski /* Fixup 'goto out's separately, they can be scattered around */ 1932d9ae7f2bSJakub Kicinski for (br_idx = 0; br_idx < nfp_prog->prog_len; br_idx++) { 1933d9ae7f2bSJakub Kicinski enum br_special special; 1934d9ae7f2bSJakub Kicinski 1935d9ae7f2bSJakub Kicinski if ((nfp_prog->prog[br_idx] & OP_BR_BASE_MASK) != OP_BR_BASE) 1936d9ae7f2bSJakub Kicinski continue; 1937d9ae7f2bSJakub Kicinski 1938d9ae7f2bSJakub Kicinski special = FIELD_GET(OP_BR_SPECIAL, nfp_prog->prog[br_idx]); 1939d9ae7f2bSJakub Kicinski switch (special) { 1940d9ae7f2bSJakub Kicinski case OP_BR_NORMAL: 1941d9ae7f2bSJakub Kicinski break; 1942d9ae7f2bSJakub Kicinski case OP_BR_GO_OUT: 1943d9ae7f2bSJakub Kicinski br_set_offset(&nfp_prog->prog[br_idx], 1944d9ae7f2bSJakub Kicinski nfp_prog->tgt_out); 1945d9ae7f2bSJakub Kicinski break; 1946d9ae7f2bSJakub Kicinski case OP_BR_GO_ABORT: 1947d9ae7f2bSJakub Kicinski br_set_offset(&nfp_prog->prog[br_idx], 1948d9ae7f2bSJakub Kicinski nfp_prog->tgt_abort); 1949d9ae7f2bSJakub Kicinski break; 1950d9ae7f2bSJakub Kicinski } 1951d9ae7f2bSJakub Kicinski 1952d9ae7f2bSJakub Kicinski nfp_prog->prog[br_idx] &= ~OP_BR_SPECIAL; 1953d9ae7f2bSJakub Kicinski } 1954d9ae7f2bSJakub Kicinski 1955d9ae7f2bSJakub Kicinski return 0; 1956d9ae7f2bSJakub Kicinski } 1957d9ae7f2bSJakub Kicinski 1958d9ae7f2bSJakub Kicinski static void nfp_intro(struct nfp_prog *nfp_prog) 1959d9ae7f2bSJakub Kicinski { 196018e53b6cSJakub Kicinski wrp_immed(nfp_prog, plen_reg(nfp_prog), GENMASK(13, 0)); 196118e53b6cSJakub Kicinski emit_alu(nfp_prog, plen_reg(nfp_prog), 196218e53b6cSJakub Kicinski plen_reg(nfp_prog), ALU_OP_AND, pv_len(nfp_prog)); 1963d9ae7f2bSJakub Kicinski } 1964d9ae7f2bSJakub Kicinski 1965d9ae7f2bSJakub Kicinski static void nfp_outro_tc_legacy(struct nfp_prog *nfp_prog) 1966d9ae7f2bSJakub Kicinski { 1967d9ae7f2bSJakub Kicinski const u8 act2code[] = { 1968d9ae7f2bSJakub Kicinski [NN_ACT_TC_DROP] = 0x22, 1969d9ae7f2bSJakub Kicinski [NN_ACT_TC_REDIR] = 0x24 1970d9ae7f2bSJakub Kicinski }; 1971d9ae7f2bSJakub Kicinski /* Target for aborts */ 1972d9ae7f2bSJakub Kicinski nfp_prog->tgt_abort = nfp_prog_current_offset(nfp_prog); 1973d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(0), 0); 1974d9ae7f2bSJakub Kicinski 1975d9ae7f2bSJakub Kicinski /* Target for normal exits */ 1976d9ae7f2bSJakub Kicinski nfp_prog->tgt_out = nfp_prog_current_offset(nfp_prog); 1977d9ae7f2bSJakub Kicinski /* Legacy TC mode: 1978d9ae7f2bSJakub Kicinski * 0 0x11 -> pass, count as stat0 1979d9ae7f2bSJakub Kicinski * -1 drop 0x22 -> drop, count as stat1 1980d9ae7f2bSJakub Kicinski * redir 0x24 -> redir, count as stat1 1981d9ae7f2bSJakub Kicinski * ife mark 0x21 -> pass, count as stat1 1982d9ae7f2bSJakub Kicinski * ife + tx 0x24 -> redir, count as stat1 1983d9ae7f2bSJakub Kicinski */ 1984d9ae7f2bSJakub Kicinski emit_br_byte_neq(nfp_prog, reg_b(0), 0xff, 0, nfp_prog->tgt_done, 2); 1985c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 1986d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_imm(0x11), SHF_SC_L_SHF, 16); 1987d9ae7f2bSJakub Kicinski 1988d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_UNC, nfp_prog->tgt_done, 1); 1989d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_imm(act2code[nfp_prog->act]), 1990d9ae7f2bSJakub Kicinski SHF_SC_L_SHF, 16); 1991d9ae7f2bSJakub Kicinski } 1992d9ae7f2bSJakub Kicinski 1993d9ae7f2bSJakub Kicinski static void nfp_outro_tc_da(struct nfp_prog *nfp_prog) 1994d9ae7f2bSJakub Kicinski { 1995d9ae7f2bSJakub Kicinski /* TC direct-action mode: 1996d9ae7f2bSJakub Kicinski * 0,1 ok NOT SUPPORTED[1] 1997d9ae7f2bSJakub Kicinski * 2 drop 0x22 -> drop, count as stat1 1998d9ae7f2bSJakub Kicinski * 4,5 nuke 0x02 -> drop 1999d9ae7f2bSJakub Kicinski * 7 redir 0x44 -> redir, count as stat2 2000d9ae7f2bSJakub Kicinski * * unspec 0x11 -> pass, count as stat0 2001d9ae7f2bSJakub Kicinski * 2002d9ae7f2bSJakub Kicinski * [1] We can't support OK and RECLASSIFY because we can't tell TC 2003d9ae7f2bSJakub Kicinski * the exact decision made. We are forced to support UNSPEC 2004d9ae7f2bSJakub Kicinski * to handle aborts so that's the only one we handle for passing 2005d9ae7f2bSJakub Kicinski * packets up the stack. 2006d9ae7f2bSJakub Kicinski */ 2007d9ae7f2bSJakub Kicinski /* Target for aborts */ 2008d9ae7f2bSJakub Kicinski nfp_prog->tgt_abort = nfp_prog_current_offset(nfp_prog); 2009d9ae7f2bSJakub Kicinski 2010d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 2011d9ae7f2bSJakub Kicinski 2012c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 2013d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_imm(0x11), SHF_SC_L_SHF, 16); 2014d9ae7f2bSJakub Kicinski 2015d9ae7f2bSJakub Kicinski /* Target for normal exits */ 2016d9ae7f2bSJakub Kicinski nfp_prog->tgt_out = nfp_prog_current_offset(nfp_prog); 2017d9ae7f2bSJakub Kicinski 2018d9ae7f2bSJakub Kicinski /* if R0 > 7 jump to abort */ 2019d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_imm(7), ALU_OP_SUB, reg_b(0)); 2020d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BLO, nfp_prog->tgt_abort, 0); 2021c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 2022d9ae7f2bSJakub Kicinski 2023d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_b(2), 0x41221211); 2024d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_b(3), 0x41001211); 2025d9ae7f2bSJakub Kicinski 2026d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_a(1), 2027d9ae7f2bSJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(0), SHF_SC_L_SHF, 2); 2028d9ae7f2bSJakub Kicinski 2029d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(1), ALU_OP_OR, reg_imm(0)); 2030d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_a(2), 2031d9ae7f2bSJakub Kicinski reg_imm(0xf), SHF_OP_AND, reg_b(2), SHF_SC_R_SHF, 0); 2032d9ae7f2bSJakub Kicinski 2033d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(1), ALU_OP_OR, reg_imm(0)); 2034d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_b(2), 2035d9ae7f2bSJakub Kicinski reg_imm(0xf), SHF_OP_AND, reg_b(3), SHF_SC_R_SHF, 0); 2036d9ae7f2bSJakub Kicinski 2037d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 2038d9ae7f2bSJakub Kicinski 2039d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_b(2), 2040d9ae7f2bSJakub Kicinski reg_a(2), SHF_OP_OR, reg_b(2), SHF_SC_L_SHF, 4); 2041d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_b(2), SHF_SC_L_SHF, 16); 2042d9ae7f2bSJakub Kicinski } 2043d9ae7f2bSJakub Kicinski 2044d9ae7f2bSJakub Kicinski static void nfp_outro_xdp(struct nfp_prog *nfp_prog) 2045d9ae7f2bSJakub Kicinski { 2046d9ae7f2bSJakub Kicinski /* XDP return codes: 2047d9ae7f2bSJakub Kicinski * 0 aborted 0x82 -> drop, count as stat3 2048d9ae7f2bSJakub Kicinski * 1 drop 0x22 -> drop, count as stat1 2049d9ae7f2bSJakub Kicinski * 2 pass 0x11 -> pass, count as stat0 2050d9ae7f2bSJakub Kicinski * 3 tx 0x44 -> redir, count as stat2 2051d9ae7f2bSJakub Kicinski * * unknown 0x82 -> drop, count as stat3 2052d9ae7f2bSJakub Kicinski */ 2053d9ae7f2bSJakub Kicinski /* Target for aborts */ 2054d9ae7f2bSJakub Kicinski nfp_prog->tgt_abort = nfp_prog_current_offset(nfp_prog); 2055d9ae7f2bSJakub Kicinski 2056d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 2057d9ae7f2bSJakub Kicinski 2058c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 2059d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_imm(0x82), SHF_SC_L_SHF, 16); 2060d9ae7f2bSJakub Kicinski 2061d9ae7f2bSJakub Kicinski /* Target for normal exits */ 2062d9ae7f2bSJakub Kicinski nfp_prog->tgt_out = nfp_prog_current_offset(nfp_prog); 2063d9ae7f2bSJakub Kicinski 2064d9ae7f2bSJakub Kicinski /* if R0 > 3 jump to abort */ 2065d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_imm(3), ALU_OP_SUB, reg_b(0)); 2066d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BLO, nfp_prog->tgt_abort, 0); 2067d9ae7f2bSJakub Kicinski 2068d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_b(2), 0x44112282); 2069d9ae7f2bSJakub Kicinski 2070d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_a(1), 2071d9ae7f2bSJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(0), SHF_SC_L_SHF, 3); 2072d9ae7f2bSJakub Kicinski 2073d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(1), ALU_OP_OR, reg_imm(0)); 2074d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_b(2), 2075d9ae7f2bSJakub Kicinski reg_imm(0xff), SHF_OP_AND, reg_b(2), SHF_SC_R_SHF, 0); 2076d9ae7f2bSJakub Kicinski 2077d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 2078d9ae7f2bSJakub Kicinski 2079c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 2080d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_b(2), SHF_SC_L_SHF, 16); 2081d9ae7f2bSJakub Kicinski } 2082d9ae7f2bSJakub Kicinski 2083d9ae7f2bSJakub Kicinski static void nfp_outro(struct nfp_prog *nfp_prog) 2084d9ae7f2bSJakub Kicinski { 2085d9ae7f2bSJakub Kicinski switch (nfp_prog->act) { 2086d9ae7f2bSJakub Kicinski case NN_ACT_DIRECT: 2087d9ae7f2bSJakub Kicinski nfp_outro_tc_da(nfp_prog); 2088d9ae7f2bSJakub Kicinski break; 2089d9ae7f2bSJakub Kicinski case NN_ACT_TC_DROP: 2090d9ae7f2bSJakub Kicinski case NN_ACT_TC_REDIR: 2091d9ae7f2bSJakub Kicinski nfp_outro_tc_legacy(nfp_prog); 2092d9ae7f2bSJakub Kicinski break; 2093d9ae7f2bSJakub Kicinski case NN_ACT_XDP: 2094d9ae7f2bSJakub Kicinski nfp_outro_xdp(nfp_prog); 2095d9ae7f2bSJakub Kicinski break; 2096d9ae7f2bSJakub Kicinski } 2097d9ae7f2bSJakub Kicinski } 2098d9ae7f2bSJakub Kicinski 2099d9ae7f2bSJakub Kicinski static int nfp_translate(struct nfp_prog *nfp_prog) 2100d9ae7f2bSJakub Kicinski { 2101d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta; 2102ff42bb9fSJakub Kicinski int err; 2103d9ae7f2bSJakub Kicinski 2104d9ae7f2bSJakub Kicinski nfp_intro(nfp_prog); 2105d9ae7f2bSJakub Kicinski if (nfp_prog->error) 2106d9ae7f2bSJakub Kicinski return nfp_prog->error; 2107d9ae7f2bSJakub Kicinski 2108d9ae7f2bSJakub Kicinski list_for_each_entry(meta, &nfp_prog->insns, l) { 2109d9ae7f2bSJakub Kicinski instr_cb_t cb = instr_cb[meta->insn.code]; 2110d9ae7f2bSJakub Kicinski 2111d9ae7f2bSJakub Kicinski meta->off = nfp_prog_current_offset(nfp_prog); 2112d9ae7f2bSJakub Kicinski 2113d9ae7f2bSJakub Kicinski if (meta->skip) { 2114d9ae7f2bSJakub Kicinski nfp_prog->n_translated++; 2115d9ae7f2bSJakub Kicinski continue; 2116d9ae7f2bSJakub Kicinski } 2117d9ae7f2bSJakub Kicinski 2118d9ae7f2bSJakub Kicinski if (nfp_meta_has_prev(nfp_prog, meta) && 2119d9ae7f2bSJakub Kicinski nfp_meta_prev(meta)->double_cb) 2120d9ae7f2bSJakub Kicinski cb = nfp_meta_prev(meta)->double_cb; 2121d9ae7f2bSJakub Kicinski if (!cb) 2122d9ae7f2bSJakub Kicinski return -ENOENT; 2123d9ae7f2bSJakub Kicinski err = cb(nfp_prog, meta); 2124d9ae7f2bSJakub Kicinski if (err) 2125d9ae7f2bSJakub Kicinski return err; 2126d9ae7f2bSJakub Kicinski 2127d9ae7f2bSJakub Kicinski nfp_prog->n_translated++; 2128d9ae7f2bSJakub Kicinski } 2129d9ae7f2bSJakub Kicinski 2130d9ae7f2bSJakub Kicinski nfp_outro(nfp_prog); 2131d9ae7f2bSJakub Kicinski if (nfp_prog->error) 2132d9ae7f2bSJakub Kicinski return nfp_prog->error; 2133d9ae7f2bSJakub Kicinski 2134ff42bb9fSJakub Kicinski wrp_nops(nfp_prog, NFP_USTORE_PREFETCH_WINDOW); 21351c03e03fSJakub Kicinski if (nfp_prog->error) 21361c03e03fSJakub Kicinski return nfp_prog->error; 21371c03e03fSJakub Kicinski 2138d9ae7f2bSJakub Kicinski return nfp_fixup_branches(nfp_prog); 2139d9ae7f2bSJakub Kicinski } 2140d9ae7f2bSJakub Kicinski 2141d9ae7f2bSJakub Kicinski static int 2142d9ae7f2bSJakub Kicinski nfp_prog_prepare(struct nfp_prog *nfp_prog, const struct bpf_insn *prog, 2143d9ae7f2bSJakub Kicinski unsigned int cnt) 2144d9ae7f2bSJakub Kicinski { 2145d9ae7f2bSJakub Kicinski unsigned int i; 2146d9ae7f2bSJakub Kicinski 2147d9ae7f2bSJakub Kicinski for (i = 0; i < cnt; i++) { 2148d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta; 2149d9ae7f2bSJakub Kicinski 2150d9ae7f2bSJakub Kicinski meta = kzalloc(sizeof(*meta), GFP_KERNEL); 2151d9ae7f2bSJakub Kicinski if (!meta) 2152d9ae7f2bSJakub Kicinski return -ENOMEM; 2153d9ae7f2bSJakub Kicinski 2154d9ae7f2bSJakub Kicinski meta->insn = prog[i]; 2155d9ae7f2bSJakub Kicinski meta->n = i; 2156d9ae7f2bSJakub Kicinski 2157d9ae7f2bSJakub Kicinski list_add_tail(&meta->l, &nfp_prog->insns); 2158d9ae7f2bSJakub Kicinski } 2159d9ae7f2bSJakub Kicinski 2160d9ae7f2bSJakub Kicinski return 0; 2161d9ae7f2bSJakub Kicinski } 2162d9ae7f2bSJakub Kicinski 2163d9ae7f2bSJakub Kicinski /* --- Optimizations --- */ 2164d9ae7f2bSJakub Kicinski static void nfp_bpf_opt_reg_init(struct nfp_prog *nfp_prog) 2165d9ae7f2bSJakub Kicinski { 2166d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta; 2167d9ae7f2bSJakub Kicinski 2168d9ae7f2bSJakub Kicinski list_for_each_entry(meta, &nfp_prog->insns, l) { 2169d9ae7f2bSJakub Kicinski struct bpf_insn insn = meta->insn; 2170d9ae7f2bSJakub Kicinski 2171d9ae7f2bSJakub Kicinski /* Programs converted from cBPF start with register xoring */ 2172d9ae7f2bSJakub Kicinski if (insn.code == (BPF_ALU64 | BPF_XOR | BPF_X) && 2173d9ae7f2bSJakub Kicinski insn.src_reg == insn.dst_reg) 2174d9ae7f2bSJakub Kicinski continue; 2175d9ae7f2bSJakub Kicinski 2176d9ae7f2bSJakub Kicinski /* Programs start with R6 = R1 but we ignore the skb pointer */ 2177d9ae7f2bSJakub Kicinski if (insn.code == (BPF_ALU64 | BPF_MOV | BPF_X) && 2178d9ae7f2bSJakub Kicinski insn.src_reg == 1 && insn.dst_reg == 6) 2179d9ae7f2bSJakub Kicinski meta->skip = true; 2180d9ae7f2bSJakub Kicinski 2181d9ae7f2bSJakub Kicinski /* Return as soon as something doesn't match */ 2182d9ae7f2bSJakub Kicinski if (!meta->skip) 2183d9ae7f2bSJakub Kicinski return; 2184d9ae7f2bSJakub Kicinski } 2185d9ae7f2bSJakub Kicinski } 2186d9ae7f2bSJakub Kicinski 2187d9ae7f2bSJakub Kicinski /* Remove masking after load since our load guarantees this is not needed */ 2188d9ae7f2bSJakub Kicinski static void nfp_bpf_opt_ld_mask(struct nfp_prog *nfp_prog) 2189d9ae7f2bSJakub Kicinski { 2190d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta1, *meta2; 2191d9ae7f2bSJakub Kicinski const s32 exp_mask[] = { 2192d9ae7f2bSJakub Kicinski [BPF_B] = 0x000000ffU, 2193d9ae7f2bSJakub Kicinski [BPF_H] = 0x0000ffffU, 2194d9ae7f2bSJakub Kicinski [BPF_W] = 0xffffffffU, 2195d9ae7f2bSJakub Kicinski }; 2196d9ae7f2bSJakub Kicinski 2197d9ae7f2bSJakub Kicinski nfp_for_each_insn_walk2(nfp_prog, meta1, meta2) { 2198d9ae7f2bSJakub Kicinski struct bpf_insn insn, next; 2199d9ae7f2bSJakub Kicinski 2200d9ae7f2bSJakub Kicinski insn = meta1->insn; 2201d9ae7f2bSJakub Kicinski next = meta2->insn; 2202d9ae7f2bSJakub Kicinski 2203d9ae7f2bSJakub Kicinski if (BPF_CLASS(insn.code) != BPF_LD) 2204d9ae7f2bSJakub Kicinski continue; 2205d9ae7f2bSJakub Kicinski if (BPF_MODE(insn.code) != BPF_ABS && 2206d9ae7f2bSJakub Kicinski BPF_MODE(insn.code) != BPF_IND) 2207d9ae7f2bSJakub Kicinski continue; 2208d9ae7f2bSJakub Kicinski 2209d9ae7f2bSJakub Kicinski if (next.code != (BPF_ALU64 | BPF_AND | BPF_K)) 2210d9ae7f2bSJakub Kicinski continue; 2211d9ae7f2bSJakub Kicinski 2212d9ae7f2bSJakub Kicinski if (!exp_mask[BPF_SIZE(insn.code)]) 2213d9ae7f2bSJakub Kicinski continue; 2214d9ae7f2bSJakub Kicinski if (exp_mask[BPF_SIZE(insn.code)] != next.imm) 2215d9ae7f2bSJakub Kicinski continue; 2216d9ae7f2bSJakub Kicinski 2217d9ae7f2bSJakub Kicinski if (next.src_reg || next.dst_reg) 2218d9ae7f2bSJakub Kicinski continue; 2219d9ae7f2bSJakub Kicinski 2220d9ae7f2bSJakub Kicinski meta2->skip = true; 2221d9ae7f2bSJakub Kicinski } 2222d9ae7f2bSJakub Kicinski } 2223d9ae7f2bSJakub Kicinski 2224d9ae7f2bSJakub Kicinski static void nfp_bpf_opt_ld_shift(struct nfp_prog *nfp_prog) 2225d9ae7f2bSJakub Kicinski { 2226d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta1, *meta2, *meta3; 2227d9ae7f2bSJakub Kicinski 2228d9ae7f2bSJakub Kicinski nfp_for_each_insn_walk3(nfp_prog, meta1, meta2, meta3) { 2229d9ae7f2bSJakub Kicinski struct bpf_insn insn, next1, next2; 2230d9ae7f2bSJakub Kicinski 2231d9ae7f2bSJakub Kicinski insn = meta1->insn; 2232d9ae7f2bSJakub Kicinski next1 = meta2->insn; 2233d9ae7f2bSJakub Kicinski next2 = meta3->insn; 2234d9ae7f2bSJakub Kicinski 2235d9ae7f2bSJakub Kicinski if (BPF_CLASS(insn.code) != BPF_LD) 2236d9ae7f2bSJakub Kicinski continue; 2237d9ae7f2bSJakub Kicinski if (BPF_MODE(insn.code) != BPF_ABS && 2238d9ae7f2bSJakub Kicinski BPF_MODE(insn.code) != BPF_IND) 2239d9ae7f2bSJakub Kicinski continue; 2240d9ae7f2bSJakub Kicinski if (BPF_SIZE(insn.code) != BPF_W) 2241d9ae7f2bSJakub Kicinski continue; 2242d9ae7f2bSJakub Kicinski 2243d9ae7f2bSJakub Kicinski if (!(next1.code == (BPF_LSH | BPF_K | BPF_ALU64) && 2244d9ae7f2bSJakub Kicinski next2.code == (BPF_RSH | BPF_K | BPF_ALU64)) && 2245d9ae7f2bSJakub Kicinski !(next1.code == (BPF_RSH | BPF_K | BPF_ALU64) && 2246d9ae7f2bSJakub Kicinski next2.code == (BPF_LSH | BPF_K | BPF_ALU64))) 2247d9ae7f2bSJakub Kicinski continue; 2248d9ae7f2bSJakub Kicinski 2249d9ae7f2bSJakub Kicinski if (next1.src_reg || next1.dst_reg || 2250d9ae7f2bSJakub Kicinski next2.src_reg || next2.dst_reg) 2251d9ae7f2bSJakub Kicinski continue; 2252d9ae7f2bSJakub Kicinski 2253d9ae7f2bSJakub Kicinski if (next1.imm != 0x20 || next2.imm != 0x20) 2254d9ae7f2bSJakub Kicinski continue; 2255d9ae7f2bSJakub Kicinski 2256d9ae7f2bSJakub Kicinski meta2->skip = true; 2257d9ae7f2bSJakub Kicinski meta3->skip = true; 2258d9ae7f2bSJakub Kicinski } 2259d9ae7f2bSJakub Kicinski } 2260d9ae7f2bSJakub Kicinski 2261d9ae7f2bSJakub Kicinski static int nfp_bpf_optimize(struct nfp_prog *nfp_prog) 2262d9ae7f2bSJakub Kicinski { 2263d9ae7f2bSJakub Kicinski nfp_bpf_opt_reg_init(nfp_prog); 2264d9ae7f2bSJakub Kicinski 2265d9ae7f2bSJakub Kicinski nfp_bpf_opt_ld_mask(nfp_prog); 2266d9ae7f2bSJakub Kicinski nfp_bpf_opt_ld_shift(nfp_prog); 2267d9ae7f2bSJakub Kicinski 2268d9ae7f2bSJakub Kicinski return 0; 2269d9ae7f2bSJakub Kicinski } 2270d9ae7f2bSJakub Kicinski 22712e85d388SJakub Kicinski static int nfp_bpf_ustore_calc(struct nfp_prog *nfp_prog, __le64 *ustore) 2272fd068ddcSJakub Kicinski { 2273fd068ddcSJakub Kicinski int i; 2274fd068ddcSJakub Kicinski 2275fd068ddcSJakub Kicinski for (i = 0; i < nfp_prog->prog_len; i++) { 2276fd068ddcSJakub Kicinski int err; 2277fd068ddcSJakub Kicinski 2278fd068ddcSJakub Kicinski err = nfp_ustore_check_valid_no_ecc(nfp_prog->prog[i]); 2279fd068ddcSJakub Kicinski if (err) 2280fd068ddcSJakub Kicinski return err; 2281fd068ddcSJakub Kicinski 2282fd068ddcSJakub Kicinski nfp_prog->prog[i] = nfp_ustore_calc_ecc_insn(nfp_prog->prog[i]); 22832e85d388SJakub Kicinski 22842e85d388SJakub Kicinski ustore[i] = cpu_to_le64(nfp_prog->prog[i]); 2285fd068ddcSJakub Kicinski } 2286fd068ddcSJakub Kicinski 2287fd068ddcSJakub Kicinski return 0; 2288fd068ddcSJakub Kicinski } 2289fd068ddcSJakub Kicinski 2290d9ae7f2bSJakub Kicinski /** 2291d9ae7f2bSJakub Kicinski * nfp_bpf_jit() - translate BPF code into NFP assembly 2292d9ae7f2bSJakub Kicinski * @filter: kernel BPF filter struct 2293d9ae7f2bSJakub Kicinski * @prog_mem: memory to store assembler instructions 2294d9ae7f2bSJakub Kicinski * @act: action attached to this eBPF program 2295d9ae7f2bSJakub Kicinski * @prog_start: offset of the first instruction when loaded 2296d9ae7f2bSJakub Kicinski * @prog_done: where to jump on exit 2297d9ae7f2bSJakub Kicinski * @prog_sz: size of @prog_mem in instructions 2298d9ae7f2bSJakub Kicinski * @res: achieved parameters of translation results 2299d9ae7f2bSJakub Kicinski */ 2300d9ae7f2bSJakub Kicinski int 2301d9ae7f2bSJakub Kicinski nfp_bpf_jit(struct bpf_prog *filter, void *prog_mem, 2302d9ae7f2bSJakub Kicinski enum nfp_bpf_action_type act, 2303d9ae7f2bSJakub Kicinski unsigned int prog_start, unsigned int prog_done, 2304d9ae7f2bSJakub Kicinski unsigned int prog_sz, struct nfp_bpf_result *res) 2305d9ae7f2bSJakub Kicinski { 2306d9ae7f2bSJakub Kicinski struct nfp_prog *nfp_prog; 2307d9ae7f2bSJakub Kicinski int ret; 2308d9ae7f2bSJakub Kicinski 2309d9ae7f2bSJakub Kicinski nfp_prog = kzalloc(sizeof(*nfp_prog), GFP_KERNEL); 2310d9ae7f2bSJakub Kicinski if (!nfp_prog) 2311d9ae7f2bSJakub Kicinski return -ENOMEM; 2312d9ae7f2bSJakub Kicinski 2313d9ae7f2bSJakub Kicinski INIT_LIST_HEAD(&nfp_prog->insns); 2314d9ae7f2bSJakub Kicinski nfp_prog->act = act; 2315d9ae7f2bSJakub Kicinski nfp_prog->start_off = prog_start; 2316d9ae7f2bSJakub Kicinski nfp_prog->tgt_done = prog_done; 2317d9ae7f2bSJakub Kicinski 2318d9ae7f2bSJakub Kicinski ret = nfp_prog_prepare(nfp_prog, filter->insnsi, filter->len); 2319d9ae7f2bSJakub Kicinski if (ret) 2320d9ae7f2bSJakub Kicinski goto out; 2321d9ae7f2bSJakub Kicinski 2322d9ae7f2bSJakub Kicinski ret = nfp_prog_verify(nfp_prog, filter); 2323d9ae7f2bSJakub Kicinski if (ret) 2324d9ae7f2bSJakub Kicinski goto out; 2325d9ae7f2bSJakub Kicinski 2326d9ae7f2bSJakub Kicinski ret = nfp_bpf_optimize(nfp_prog); 2327d9ae7f2bSJakub Kicinski if (ret) 2328d9ae7f2bSJakub Kicinski goto out; 2329d9ae7f2bSJakub Kicinski 2330226e0e94SJakub Kicinski nfp_prog->num_regs = MAX_BPF_REG; 2331d9ae7f2bSJakub Kicinski nfp_prog->regs_per_thread = 32; 2332d9ae7f2bSJakub Kicinski 2333d9ae7f2bSJakub Kicinski nfp_prog->prog = prog_mem; 2334d9ae7f2bSJakub Kicinski nfp_prog->__prog_alloc_len = prog_sz; 2335d9ae7f2bSJakub Kicinski 2336d9ae7f2bSJakub Kicinski ret = nfp_translate(nfp_prog); 2337d9ae7f2bSJakub Kicinski if (ret) { 2338d9ae7f2bSJakub Kicinski pr_err("Translation failed with error %d (translated: %u)\n", 2339d9ae7f2bSJakub Kicinski ret, nfp_prog->n_translated); 2340d9ae7f2bSJakub Kicinski ret = -EINVAL; 2341fd068ddcSJakub Kicinski goto out; 2342d9ae7f2bSJakub Kicinski } 2343d9ae7f2bSJakub Kicinski 23442e85d388SJakub Kicinski ret = nfp_bpf_ustore_calc(nfp_prog, (__force __le64 *)prog_mem); 2345fd068ddcSJakub Kicinski 2346d9ae7f2bSJakub Kicinski res->n_instr = nfp_prog->prog_len; 2347226e0e94SJakub Kicinski res->dense_mode = false; 2348d9ae7f2bSJakub Kicinski out: 2349d9ae7f2bSJakub Kicinski nfp_prog_free(nfp_prog); 2350d9ae7f2bSJakub Kicinski 2351d9ae7f2bSJakub Kicinski return ret; 2352d9ae7f2bSJakub Kicinski } 2353