1d9ae7f2bSJakub Kicinski /* 2d9ae7f2bSJakub Kicinski * Copyright (C) 2016 Netronome Systems, Inc. 3d9ae7f2bSJakub Kicinski * 4d9ae7f2bSJakub Kicinski * This software is dual licensed under the GNU General License Version 2, 5d9ae7f2bSJakub Kicinski * June 1991 as shown in the file COPYING in the top-level directory of this 6d9ae7f2bSJakub Kicinski * source tree or the BSD 2-Clause License provided below. You have the 7d9ae7f2bSJakub Kicinski * option to license this software under the complete terms of either license. 8d9ae7f2bSJakub Kicinski * 9d9ae7f2bSJakub Kicinski * The BSD 2-Clause License: 10d9ae7f2bSJakub Kicinski * 11d9ae7f2bSJakub Kicinski * Redistribution and use in source and binary forms, with or 12d9ae7f2bSJakub Kicinski * without modification, are permitted provided that the following 13d9ae7f2bSJakub Kicinski * conditions are met: 14d9ae7f2bSJakub Kicinski * 15d9ae7f2bSJakub Kicinski * 1. Redistributions of source code must retain the above 16d9ae7f2bSJakub Kicinski * copyright notice, this list of conditions and the following 17d9ae7f2bSJakub Kicinski * disclaimer. 18d9ae7f2bSJakub Kicinski * 19d9ae7f2bSJakub Kicinski * 2. Redistributions in binary form must reproduce the above 20d9ae7f2bSJakub Kicinski * copyright notice, this list of conditions and the following 21d9ae7f2bSJakub Kicinski * disclaimer in the documentation and/or other materials 22d9ae7f2bSJakub Kicinski * provided with the distribution. 23d9ae7f2bSJakub Kicinski * 24d9ae7f2bSJakub Kicinski * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 25d9ae7f2bSJakub Kicinski * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 26d9ae7f2bSJakub Kicinski * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 27d9ae7f2bSJakub Kicinski * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 28d9ae7f2bSJakub Kicinski * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 29d9ae7f2bSJakub Kicinski * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 30d9ae7f2bSJakub Kicinski * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 31d9ae7f2bSJakub Kicinski * SOFTWARE. 32d9ae7f2bSJakub Kicinski */ 33d9ae7f2bSJakub Kicinski 34d9ae7f2bSJakub Kicinski #define pr_fmt(fmt) "NFP net bpf: " fmt 35d9ae7f2bSJakub Kicinski 36d9ae7f2bSJakub Kicinski #include <linux/kernel.h> 37d9ae7f2bSJakub Kicinski #include <linux/bpf.h> 38d9ae7f2bSJakub Kicinski #include <linux/filter.h> 39d9ae7f2bSJakub Kicinski #include <linux/pkt_cls.h> 40d9ae7f2bSJakub Kicinski #include <linux/unistd.h> 41d9ae7f2bSJakub Kicinski 42d9ae7f2bSJakub Kicinski #include "main.h" 43d9ae7f2bSJakub Kicinski #include "../nfp_asm.h" 44d9ae7f2bSJakub Kicinski 45d9ae7f2bSJakub Kicinski /* --- NFP prog --- */ 46d9ae7f2bSJakub Kicinski /* Foreach "multiple" entries macros provide pos and next<n> pointers. 47d9ae7f2bSJakub Kicinski * It's safe to modify the next pointers (but not pos). 48d9ae7f2bSJakub Kicinski */ 49d9ae7f2bSJakub Kicinski #define nfp_for_each_insn_walk2(nfp_prog, pos, next) \ 50d9ae7f2bSJakub Kicinski for (pos = list_first_entry(&(nfp_prog)->insns, typeof(*pos), l), \ 51d9ae7f2bSJakub Kicinski next = list_next_entry(pos, l); \ 52d9ae7f2bSJakub Kicinski &(nfp_prog)->insns != &pos->l && \ 53d9ae7f2bSJakub Kicinski &(nfp_prog)->insns != &next->l; \ 54d9ae7f2bSJakub Kicinski pos = nfp_meta_next(pos), \ 55d9ae7f2bSJakub Kicinski next = nfp_meta_next(pos)) 56d9ae7f2bSJakub Kicinski 57d9ae7f2bSJakub Kicinski #define nfp_for_each_insn_walk3(nfp_prog, pos, next, next2) \ 58d9ae7f2bSJakub Kicinski for (pos = list_first_entry(&(nfp_prog)->insns, typeof(*pos), l), \ 59d9ae7f2bSJakub Kicinski next = list_next_entry(pos, l), \ 60d9ae7f2bSJakub Kicinski next2 = list_next_entry(next, l); \ 61d9ae7f2bSJakub Kicinski &(nfp_prog)->insns != &pos->l && \ 62d9ae7f2bSJakub Kicinski &(nfp_prog)->insns != &next->l && \ 63d9ae7f2bSJakub Kicinski &(nfp_prog)->insns != &next2->l; \ 64d9ae7f2bSJakub Kicinski pos = nfp_meta_next(pos), \ 65d9ae7f2bSJakub Kicinski next = nfp_meta_next(pos), \ 66d9ae7f2bSJakub Kicinski next2 = nfp_meta_next(next)) 67d9ae7f2bSJakub Kicinski 68d9ae7f2bSJakub Kicinski static bool 69d9ae7f2bSJakub Kicinski nfp_meta_has_next(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 70d9ae7f2bSJakub Kicinski { 71d9ae7f2bSJakub Kicinski return meta->l.next != &nfp_prog->insns; 72d9ae7f2bSJakub Kicinski } 73d9ae7f2bSJakub Kicinski 74d9ae7f2bSJakub Kicinski static bool 75d9ae7f2bSJakub Kicinski nfp_meta_has_prev(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 76d9ae7f2bSJakub Kicinski { 77d9ae7f2bSJakub Kicinski return meta->l.prev != &nfp_prog->insns; 78d9ae7f2bSJakub Kicinski } 79d9ae7f2bSJakub Kicinski 80d9ae7f2bSJakub Kicinski static void nfp_prog_free(struct nfp_prog *nfp_prog) 81d9ae7f2bSJakub Kicinski { 82d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta, *tmp; 83d9ae7f2bSJakub Kicinski 84d9ae7f2bSJakub Kicinski list_for_each_entry_safe(meta, tmp, &nfp_prog->insns, l) { 85d9ae7f2bSJakub Kicinski list_del(&meta->l); 86d9ae7f2bSJakub Kicinski kfree(meta); 87d9ae7f2bSJakub Kicinski } 88d9ae7f2bSJakub Kicinski kfree(nfp_prog); 89d9ae7f2bSJakub Kicinski } 90d9ae7f2bSJakub Kicinski 91d9ae7f2bSJakub Kicinski static void nfp_prog_push(struct nfp_prog *nfp_prog, u64 insn) 92d9ae7f2bSJakub Kicinski { 93d9ae7f2bSJakub Kicinski if (nfp_prog->__prog_alloc_len == nfp_prog->prog_len) { 94d9ae7f2bSJakub Kicinski nfp_prog->error = -ENOSPC; 95d9ae7f2bSJakub Kicinski return; 96d9ae7f2bSJakub Kicinski } 97d9ae7f2bSJakub Kicinski 98d9ae7f2bSJakub Kicinski nfp_prog->prog[nfp_prog->prog_len] = insn; 99d9ae7f2bSJakub Kicinski nfp_prog->prog_len++; 100d9ae7f2bSJakub Kicinski } 101d9ae7f2bSJakub Kicinski 102d9ae7f2bSJakub Kicinski static unsigned int nfp_prog_current_offset(struct nfp_prog *nfp_prog) 103d9ae7f2bSJakub Kicinski { 104d9ae7f2bSJakub Kicinski return nfp_prog->start_off + nfp_prog->prog_len; 105d9ae7f2bSJakub Kicinski } 106d9ae7f2bSJakub Kicinski 107d9ae7f2bSJakub Kicinski static unsigned int 108d9ae7f2bSJakub Kicinski nfp_prog_offset_to_index(struct nfp_prog *nfp_prog, unsigned int offset) 109d9ae7f2bSJakub Kicinski { 110d9ae7f2bSJakub Kicinski return offset - nfp_prog->start_off; 111d9ae7f2bSJakub Kicinski } 112d9ae7f2bSJakub Kicinski 113d9ae7f2bSJakub Kicinski /* --- Emitters --- */ 114d9ae7f2bSJakub Kicinski static void 115d9ae7f2bSJakub Kicinski __emit_cmd(struct nfp_prog *nfp_prog, enum cmd_tgt_map op, 116d9ae7f2bSJakub Kicinski u8 mode, u8 xfer, u8 areg, u8 breg, u8 size, bool sync) 117d9ae7f2bSJakub Kicinski { 118d9ae7f2bSJakub Kicinski enum cmd_ctx_swap ctx; 119d9ae7f2bSJakub Kicinski u64 insn; 120d9ae7f2bSJakub Kicinski 121d9ae7f2bSJakub Kicinski if (sync) 122d9ae7f2bSJakub Kicinski ctx = CMD_CTX_SWAP; 123d9ae7f2bSJakub Kicinski else 124d9ae7f2bSJakub Kicinski ctx = CMD_CTX_NO_SWAP; 125d9ae7f2bSJakub Kicinski 126d9ae7f2bSJakub Kicinski insn = FIELD_PREP(OP_CMD_A_SRC, areg) | 127d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_CTX, ctx) | 128d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_B_SRC, breg) | 129d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_TOKEN, cmd_tgt_act[op].token) | 130d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_XFER, xfer) | 131d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_CNT, size) | 132d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_SIG, sync) | 133d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_TGT_CMD, cmd_tgt_act[op].tgt_cmd) | 134d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_MODE, mode); 135d9ae7f2bSJakub Kicinski 136d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 137d9ae7f2bSJakub Kicinski } 138d9ae7f2bSJakub Kicinski 139d9ae7f2bSJakub Kicinski static void 140d9ae7f2bSJakub Kicinski emit_cmd(struct nfp_prog *nfp_prog, enum cmd_tgt_map op, 141b3f868dfSJakub Kicinski u8 mode, u8 xfer, swreg lreg, swreg rreg, u8 size, bool sync) 142d9ae7f2bSJakub Kicinski { 143d9ae7f2bSJakub Kicinski struct nfp_insn_re_regs reg; 144d9ae7f2bSJakub Kicinski int err; 145d9ae7f2bSJakub Kicinski 146d9ae7f2bSJakub Kicinski err = swreg_to_restricted(reg_none(), lreg, rreg, ®, false); 147d9ae7f2bSJakub Kicinski if (err) { 148d9ae7f2bSJakub Kicinski nfp_prog->error = err; 149d9ae7f2bSJakub Kicinski return; 150d9ae7f2bSJakub Kicinski } 151d9ae7f2bSJakub Kicinski if (reg.swap) { 152d9ae7f2bSJakub Kicinski pr_err("cmd can't swap arguments\n"); 153d9ae7f2bSJakub Kicinski nfp_prog->error = -EFAULT; 154d9ae7f2bSJakub Kicinski return; 155d9ae7f2bSJakub Kicinski } 156995e101fSJakub Kicinski if (reg.dst_lmextn || reg.src_lmextn) { 157995e101fSJakub Kicinski pr_err("cmd can't use LMextn\n"); 158995e101fSJakub Kicinski nfp_prog->error = -EFAULT; 159995e101fSJakub Kicinski return; 160995e101fSJakub Kicinski } 161d9ae7f2bSJakub Kicinski 162d9ae7f2bSJakub Kicinski __emit_cmd(nfp_prog, op, mode, xfer, reg.areg, reg.breg, size, sync); 163d9ae7f2bSJakub Kicinski } 164d9ae7f2bSJakub Kicinski 165d9ae7f2bSJakub Kicinski static void 166d9ae7f2bSJakub Kicinski __emit_br(struct nfp_prog *nfp_prog, enum br_mask mask, enum br_ev_pip ev_pip, 167d9ae7f2bSJakub Kicinski enum br_ctx_signal_state css, u16 addr, u8 defer) 168d9ae7f2bSJakub Kicinski { 169d9ae7f2bSJakub Kicinski u16 addr_lo, addr_hi; 170d9ae7f2bSJakub Kicinski u64 insn; 171d9ae7f2bSJakub Kicinski 172d9ae7f2bSJakub Kicinski addr_lo = addr & (OP_BR_ADDR_LO >> __bf_shf(OP_BR_ADDR_LO)); 173d9ae7f2bSJakub Kicinski addr_hi = addr != addr_lo; 174d9ae7f2bSJakub Kicinski 175d9ae7f2bSJakub Kicinski insn = OP_BR_BASE | 176d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_MASK, mask) | 177d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_EV_PIP, ev_pip) | 178d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_CSS, css) | 179d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_DEFBR, defer) | 180d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_ADDR_LO, addr_lo) | 181d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_ADDR_HI, addr_hi); 182d9ae7f2bSJakub Kicinski 183d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 184d9ae7f2bSJakub Kicinski } 185d9ae7f2bSJakub Kicinski 186d9ae7f2bSJakub Kicinski static void emit_br_def(struct nfp_prog *nfp_prog, u16 addr, u8 defer) 187d9ae7f2bSJakub Kicinski { 188d9ae7f2bSJakub Kicinski if (defer > 2) { 189d9ae7f2bSJakub Kicinski pr_err("BUG: branch defer out of bounds %d\n", defer); 190d9ae7f2bSJakub Kicinski nfp_prog->error = -EFAULT; 191d9ae7f2bSJakub Kicinski return; 192d9ae7f2bSJakub Kicinski } 193d9ae7f2bSJakub Kicinski __emit_br(nfp_prog, BR_UNC, BR_EV_PIP_UNCOND, BR_CSS_NONE, addr, defer); 194d9ae7f2bSJakub Kicinski } 195d9ae7f2bSJakub Kicinski 196d9ae7f2bSJakub Kicinski static void 197d9ae7f2bSJakub Kicinski emit_br(struct nfp_prog *nfp_prog, enum br_mask mask, u16 addr, u8 defer) 198d9ae7f2bSJakub Kicinski { 199d9ae7f2bSJakub Kicinski __emit_br(nfp_prog, mask, 200d9ae7f2bSJakub Kicinski mask != BR_UNC ? BR_EV_PIP_COND : BR_EV_PIP_UNCOND, 201d9ae7f2bSJakub Kicinski BR_CSS_NONE, addr, defer); 202d9ae7f2bSJakub Kicinski } 203d9ae7f2bSJakub Kicinski 204d9ae7f2bSJakub Kicinski static void 205d9ae7f2bSJakub Kicinski __emit_br_byte(struct nfp_prog *nfp_prog, u8 areg, u8 breg, bool imm8, 206995e101fSJakub Kicinski u8 byte, bool equal, u16 addr, u8 defer, bool src_lmextn) 207d9ae7f2bSJakub Kicinski { 208d9ae7f2bSJakub Kicinski u16 addr_lo, addr_hi; 209d9ae7f2bSJakub Kicinski u64 insn; 210d9ae7f2bSJakub Kicinski 211d9ae7f2bSJakub Kicinski addr_lo = addr & (OP_BB_ADDR_LO >> __bf_shf(OP_BB_ADDR_LO)); 212d9ae7f2bSJakub Kicinski addr_hi = addr != addr_lo; 213d9ae7f2bSJakub Kicinski 214d9ae7f2bSJakub Kicinski insn = OP_BBYTE_BASE | 215d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BB_A_SRC, areg) | 216d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BB_BYTE, byte) | 217d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BB_B_SRC, breg) | 218d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BB_I8, imm8) | 219d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BB_EQ, equal) | 220d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BB_DEFBR, defer) | 221d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BB_ADDR_LO, addr_lo) | 222995e101fSJakub Kicinski FIELD_PREP(OP_BB_ADDR_HI, addr_hi) | 223995e101fSJakub Kicinski FIELD_PREP(OP_BB_SRC_LMEXTN, src_lmextn); 224d9ae7f2bSJakub Kicinski 225d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 226d9ae7f2bSJakub Kicinski } 227d9ae7f2bSJakub Kicinski 228d9ae7f2bSJakub Kicinski static void 229d9ae7f2bSJakub Kicinski emit_br_byte_neq(struct nfp_prog *nfp_prog, 230995e101fSJakub Kicinski swreg src, u8 imm, u8 byte, u16 addr, u8 defer) 231d9ae7f2bSJakub Kicinski { 232d9ae7f2bSJakub Kicinski struct nfp_insn_re_regs reg; 233d9ae7f2bSJakub Kicinski int err; 234d9ae7f2bSJakub Kicinski 235995e101fSJakub Kicinski err = swreg_to_restricted(reg_none(), src, reg_imm(imm), ®, true); 236d9ae7f2bSJakub Kicinski if (err) { 237d9ae7f2bSJakub Kicinski nfp_prog->error = err; 238d9ae7f2bSJakub Kicinski return; 239d9ae7f2bSJakub Kicinski } 240d9ae7f2bSJakub Kicinski 241d9ae7f2bSJakub Kicinski __emit_br_byte(nfp_prog, reg.areg, reg.breg, reg.i8, byte, false, addr, 242995e101fSJakub Kicinski defer, reg.src_lmextn); 243d9ae7f2bSJakub Kicinski } 244d9ae7f2bSJakub Kicinski 245d9ae7f2bSJakub Kicinski static void 246d9ae7f2bSJakub Kicinski __emit_immed(struct nfp_prog *nfp_prog, u16 areg, u16 breg, u16 imm_hi, 247d9ae7f2bSJakub Kicinski enum immed_width width, bool invert, 248995e101fSJakub Kicinski enum immed_shift shift, bool wr_both, 249995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 250d9ae7f2bSJakub Kicinski { 251d9ae7f2bSJakub Kicinski u64 insn; 252d9ae7f2bSJakub Kicinski 253d9ae7f2bSJakub Kicinski insn = OP_IMMED_BASE | 254d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_A_SRC, areg) | 255d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_B_SRC, breg) | 256d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_IMM, imm_hi) | 257d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_WIDTH, width) | 258d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_INV, invert) | 259d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_SHIFT, shift) | 260995e101fSJakub Kicinski FIELD_PREP(OP_IMMED_WR_AB, wr_both) | 261995e101fSJakub Kicinski FIELD_PREP(OP_IMMED_SRC_LMEXTN, src_lmextn) | 262995e101fSJakub Kicinski FIELD_PREP(OP_IMMED_DST_LMEXTN, dst_lmextn); 263d9ae7f2bSJakub Kicinski 264d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 265d9ae7f2bSJakub Kicinski } 266d9ae7f2bSJakub Kicinski 267d9ae7f2bSJakub Kicinski static void 268b3f868dfSJakub Kicinski emit_immed(struct nfp_prog *nfp_prog, swreg dst, u16 imm, 269d9ae7f2bSJakub Kicinski enum immed_width width, bool invert, enum immed_shift shift) 270d9ae7f2bSJakub Kicinski { 271d9ae7f2bSJakub Kicinski struct nfp_insn_ur_regs reg; 272d9ae7f2bSJakub Kicinski int err; 273d9ae7f2bSJakub Kicinski 274b3f868dfSJakub Kicinski if (swreg_type(dst) == NN_REG_IMM) { 275d9ae7f2bSJakub Kicinski nfp_prog->error = -EFAULT; 276d9ae7f2bSJakub Kicinski return; 277d9ae7f2bSJakub Kicinski } 278d9ae7f2bSJakub Kicinski 279d9ae7f2bSJakub Kicinski err = swreg_to_unrestricted(dst, dst, reg_imm(imm & 0xff), ®); 280d9ae7f2bSJakub Kicinski if (err) { 281d9ae7f2bSJakub Kicinski nfp_prog->error = err; 282d9ae7f2bSJakub Kicinski return; 283d9ae7f2bSJakub Kicinski } 284d9ae7f2bSJakub Kicinski 285d9ae7f2bSJakub Kicinski __emit_immed(nfp_prog, reg.areg, reg.breg, imm >> 8, width, 286995e101fSJakub Kicinski invert, shift, reg.wr_both, 287995e101fSJakub Kicinski reg.dst_lmextn, reg.src_lmextn); 288d9ae7f2bSJakub Kicinski } 289d9ae7f2bSJakub Kicinski 290d9ae7f2bSJakub Kicinski static void 291d9ae7f2bSJakub Kicinski __emit_shf(struct nfp_prog *nfp_prog, u16 dst, enum alu_dst_ab dst_ab, 292d9ae7f2bSJakub Kicinski enum shf_sc sc, u8 shift, 293995e101fSJakub Kicinski u16 areg, enum shf_op op, u16 breg, bool i8, bool sw, bool wr_both, 294995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 295d9ae7f2bSJakub Kicinski { 296d9ae7f2bSJakub Kicinski u64 insn; 297d9ae7f2bSJakub Kicinski 298d9ae7f2bSJakub Kicinski if (!FIELD_FIT(OP_SHF_SHIFT, shift)) { 299d9ae7f2bSJakub Kicinski nfp_prog->error = -EFAULT; 300d9ae7f2bSJakub Kicinski return; 301d9ae7f2bSJakub Kicinski } 302d9ae7f2bSJakub Kicinski 303d9ae7f2bSJakub Kicinski if (sc == SHF_SC_L_SHF) 304d9ae7f2bSJakub Kicinski shift = 32 - shift; 305d9ae7f2bSJakub Kicinski 306d9ae7f2bSJakub Kicinski insn = OP_SHF_BASE | 307d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_A_SRC, areg) | 308d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_SC, sc) | 309d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_B_SRC, breg) | 310d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_I8, i8) | 311d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_SW, sw) | 312d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_DST, dst) | 313d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_SHIFT, shift) | 314d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_OP, op) | 315d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_DST_AB, dst_ab) | 316995e101fSJakub Kicinski FIELD_PREP(OP_SHF_WR_AB, wr_both) | 317995e101fSJakub Kicinski FIELD_PREP(OP_SHF_SRC_LMEXTN, src_lmextn) | 318995e101fSJakub Kicinski FIELD_PREP(OP_SHF_DST_LMEXTN, dst_lmextn); 319d9ae7f2bSJakub Kicinski 320d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 321d9ae7f2bSJakub Kicinski } 322d9ae7f2bSJakub Kicinski 323d9ae7f2bSJakub Kicinski static void 324b3f868dfSJakub Kicinski emit_shf(struct nfp_prog *nfp_prog, swreg dst, 325b3f868dfSJakub Kicinski swreg lreg, enum shf_op op, swreg rreg, enum shf_sc sc, u8 shift) 326d9ae7f2bSJakub Kicinski { 327d9ae7f2bSJakub Kicinski struct nfp_insn_re_regs reg; 328d9ae7f2bSJakub Kicinski int err; 329d9ae7f2bSJakub Kicinski 330d9ae7f2bSJakub Kicinski err = swreg_to_restricted(dst, lreg, rreg, ®, true); 331d9ae7f2bSJakub Kicinski if (err) { 332d9ae7f2bSJakub Kicinski nfp_prog->error = err; 333d9ae7f2bSJakub Kicinski return; 334d9ae7f2bSJakub Kicinski } 335d9ae7f2bSJakub Kicinski 336d9ae7f2bSJakub Kicinski __emit_shf(nfp_prog, reg.dst, reg.dst_ab, sc, shift, 337995e101fSJakub Kicinski reg.areg, op, reg.breg, reg.i8, reg.swap, reg.wr_both, 338995e101fSJakub Kicinski reg.dst_lmextn, reg.src_lmextn); 339d9ae7f2bSJakub Kicinski } 340d9ae7f2bSJakub Kicinski 341d9ae7f2bSJakub Kicinski static void 342d9ae7f2bSJakub Kicinski __emit_alu(struct nfp_prog *nfp_prog, u16 dst, enum alu_dst_ab dst_ab, 343995e101fSJakub Kicinski u16 areg, enum alu_op op, u16 breg, bool swap, bool wr_both, 344995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 345d9ae7f2bSJakub Kicinski { 346d9ae7f2bSJakub Kicinski u64 insn; 347d9ae7f2bSJakub Kicinski 348d9ae7f2bSJakub Kicinski insn = OP_ALU_BASE | 349d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_A_SRC, areg) | 350d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_B_SRC, breg) | 351d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_DST, dst) | 352d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_SW, swap) | 353d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_OP, op) | 354d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_DST_AB, dst_ab) | 355995e101fSJakub Kicinski FIELD_PREP(OP_ALU_WR_AB, wr_both) | 356995e101fSJakub Kicinski FIELD_PREP(OP_ALU_SRC_LMEXTN, src_lmextn) | 357995e101fSJakub Kicinski FIELD_PREP(OP_ALU_DST_LMEXTN, dst_lmextn); 358d9ae7f2bSJakub Kicinski 359d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 360d9ae7f2bSJakub Kicinski } 361d9ae7f2bSJakub Kicinski 362d9ae7f2bSJakub Kicinski static void 363b3f868dfSJakub Kicinski emit_alu(struct nfp_prog *nfp_prog, swreg dst, 364b3f868dfSJakub Kicinski swreg lreg, enum alu_op op, swreg rreg) 365d9ae7f2bSJakub Kicinski { 366d9ae7f2bSJakub Kicinski struct nfp_insn_ur_regs reg; 367d9ae7f2bSJakub Kicinski int err; 368d9ae7f2bSJakub Kicinski 369d9ae7f2bSJakub Kicinski err = swreg_to_unrestricted(dst, lreg, rreg, ®); 370d9ae7f2bSJakub Kicinski if (err) { 371d9ae7f2bSJakub Kicinski nfp_prog->error = err; 372d9ae7f2bSJakub Kicinski return; 373d9ae7f2bSJakub Kicinski } 374d9ae7f2bSJakub Kicinski 375d9ae7f2bSJakub Kicinski __emit_alu(nfp_prog, reg.dst, reg.dst_ab, 376995e101fSJakub Kicinski reg.areg, op, reg.breg, reg.swap, reg.wr_both, 377995e101fSJakub Kicinski reg.dst_lmextn, reg.src_lmextn); 378d9ae7f2bSJakub Kicinski } 379d9ae7f2bSJakub Kicinski 380d9ae7f2bSJakub Kicinski static void 381d9ae7f2bSJakub Kicinski __emit_ld_field(struct nfp_prog *nfp_prog, enum shf_sc sc, 382d9ae7f2bSJakub Kicinski u8 areg, u8 bmask, u8 breg, u8 shift, bool imm8, 383995e101fSJakub Kicinski bool zero, bool swap, bool wr_both, 384995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 385d9ae7f2bSJakub Kicinski { 386d9ae7f2bSJakub Kicinski u64 insn; 387d9ae7f2bSJakub Kicinski 388d9ae7f2bSJakub Kicinski insn = OP_LDF_BASE | 389d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_A_SRC, areg) | 390d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_SC, sc) | 391d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_B_SRC, breg) | 392d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_I8, imm8) | 393d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_SW, swap) | 394d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_ZF, zero) | 395d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_BMASK, bmask) | 396d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_SHF, shift) | 397995e101fSJakub Kicinski FIELD_PREP(OP_LDF_WR_AB, wr_both) | 398995e101fSJakub Kicinski FIELD_PREP(OP_LDF_SRC_LMEXTN, src_lmextn) | 399995e101fSJakub Kicinski FIELD_PREP(OP_LDF_DST_LMEXTN, dst_lmextn); 400d9ae7f2bSJakub Kicinski 401d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 402d9ae7f2bSJakub Kicinski } 403d9ae7f2bSJakub Kicinski 404d9ae7f2bSJakub Kicinski static void 405bc8c80a8SJakub Kicinski emit_ld_field_any(struct nfp_prog *nfp_prog, swreg dst, u8 bmask, swreg src, 406bc8c80a8SJakub Kicinski enum shf_sc sc, u8 shift, bool zero) 407d9ae7f2bSJakub Kicinski { 408d9ae7f2bSJakub Kicinski struct nfp_insn_re_regs reg; 409d9ae7f2bSJakub Kicinski int err; 410d9ae7f2bSJakub Kicinski 4112de1be1dSJakub Kicinski /* Note: ld_field is special as it uses one of the src regs as dst */ 4122de1be1dSJakub Kicinski err = swreg_to_restricted(dst, dst, src, ®, true); 413d9ae7f2bSJakub Kicinski if (err) { 414d9ae7f2bSJakub Kicinski nfp_prog->error = err; 415d9ae7f2bSJakub Kicinski return; 416d9ae7f2bSJakub Kicinski } 417d9ae7f2bSJakub Kicinski 418d9ae7f2bSJakub Kicinski __emit_ld_field(nfp_prog, sc, reg.areg, bmask, reg.breg, shift, 419995e101fSJakub Kicinski reg.i8, zero, reg.swap, reg.wr_both, 420995e101fSJakub Kicinski reg.dst_lmextn, reg.src_lmextn); 421d9ae7f2bSJakub Kicinski } 422d9ae7f2bSJakub Kicinski 423d9ae7f2bSJakub Kicinski static void 424b3f868dfSJakub Kicinski emit_ld_field(struct nfp_prog *nfp_prog, swreg dst, u8 bmask, swreg src, 425d9ae7f2bSJakub Kicinski enum shf_sc sc, u8 shift) 426d9ae7f2bSJakub Kicinski { 427bc8c80a8SJakub Kicinski emit_ld_field_any(nfp_prog, dst, bmask, src, sc, shift, false); 428d9ae7f2bSJakub Kicinski } 429d9ae7f2bSJakub Kicinski 4301c03e03fSJakub Kicinski static void emit_nop(struct nfp_prog *nfp_prog) 4311c03e03fSJakub Kicinski { 4321c03e03fSJakub Kicinski __emit_immed(nfp_prog, UR_REG_IMM, UR_REG_IMM, 0, 0, 0, 0, 0, 0, 0); 4331c03e03fSJakub Kicinski } 4341c03e03fSJakub Kicinski 435d9ae7f2bSJakub Kicinski /* --- Wrappers --- */ 436d9ae7f2bSJakub Kicinski static bool pack_immed(u32 imm, u16 *val, enum immed_shift *shift) 437d9ae7f2bSJakub Kicinski { 438d9ae7f2bSJakub Kicinski if (!(imm & 0xffff0000)) { 439d9ae7f2bSJakub Kicinski *val = imm; 440d9ae7f2bSJakub Kicinski *shift = IMMED_SHIFT_0B; 441d9ae7f2bSJakub Kicinski } else if (!(imm & 0xff0000ff)) { 442d9ae7f2bSJakub Kicinski *val = imm >> 8; 443d9ae7f2bSJakub Kicinski *shift = IMMED_SHIFT_1B; 444d9ae7f2bSJakub Kicinski } else if (!(imm & 0x0000ffff)) { 445d9ae7f2bSJakub Kicinski *val = imm >> 16; 446d9ae7f2bSJakub Kicinski *shift = IMMED_SHIFT_2B; 447d9ae7f2bSJakub Kicinski } else { 448d9ae7f2bSJakub Kicinski return false; 449d9ae7f2bSJakub Kicinski } 450d9ae7f2bSJakub Kicinski 451d9ae7f2bSJakub Kicinski return true; 452d9ae7f2bSJakub Kicinski } 453d9ae7f2bSJakub Kicinski 454b3f868dfSJakub Kicinski static void wrp_immed(struct nfp_prog *nfp_prog, swreg dst, u32 imm) 455d9ae7f2bSJakub Kicinski { 456d9ae7f2bSJakub Kicinski enum immed_shift shift; 457d9ae7f2bSJakub Kicinski u16 val; 458d9ae7f2bSJakub Kicinski 459d9ae7f2bSJakub Kicinski if (pack_immed(imm, &val, &shift)) { 460d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, val, IMMED_WIDTH_ALL, false, shift); 461d9ae7f2bSJakub Kicinski } else if (pack_immed(~imm, &val, &shift)) { 462d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, val, IMMED_WIDTH_ALL, true, shift); 463d9ae7f2bSJakub Kicinski } else { 464d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, imm & 0xffff, IMMED_WIDTH_ALL, 465d9ae7f2bSJakub Kicinski false, IMMED_SHIFT_0B); 466d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, imm >> 16, IMMED_WIDTH_WORD, 467d9ae7f2bSJakub Kicinski false, IMMED_SHIFT_2B); 468d9ae7f2bSJakub Kicinski } 469d9ae7f2bSJakub Kicinski } 470d9ae7f2bSJakub Kicinski 471d9ae7f2bSJakub Kicinski /* ur_load_imm_any() - encode immediate or use tmp register (unrestricted) 472d9ae7f2bSJakub Kicinski * If the @imm is small enough encode it directly in operand and return 473d9ae7f2bSJakub Kicinski * otherwise load @imm to a spare register and return its encoding. 474d9ae7f2bSJakub Kicinski */ 475b3f868dfSJakub Kicinski static swreg ur_load_imm_any(struct nfp_prog *nfp_prog, u32 imm, swreg tmp_reg) 476d9ae7f2bSJakub Kicinski { 477d9ae7f2bSJakub Kicinski if (FIELD_FIT(UR_REG_IMM_MAX, imm)) 478d9ae7f2bSJakub Kicinski return reg_imm(imm); 479d9ae7f2bSJakub Kicinski 480d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, tmp_reg, imm); 481d9ae7f2bSJakub Kicinski return tmp_reg; 482d9ae7f2bSJakub Kicinski } 483d9ae7f2bSJakub Kicinski 484d9ae7f2bSJakub Kicinski /* re_load_imm_any() - encode immediate or use tmp register (restricted) 485d9ae7f2bSJakub Kicinski * If the @imm is small enough encode it directly in operand and return 486d9ae7f2bSJakub Kicinski * otherwise load @imm to a spare register and return its encoding. 487d9ae7f2bSJakub Kicinski */ 488b3f868dfSJakub Kicinski static swreg re_load_imm_any(struct nfp_prog *nfp_prog, u32 imm, swreg tmp_reg) 489d9ae7f2bSJakub Kicinski { 490d9ae7f2bSJakub Kicinski if (FIELD_FIT(RE_REG_IMM_MAX, imm)) 491d9ae7f2bSJakub Kicinski return reg_imm(imm); 492d9ae7f2bSJakub Kicinski 493d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, tmp_reg, imm); 494d9ae7f2bSJakub Kicinski return tmp_reg; 495d9ae7f2bSJakub Kicinski } 496d9ae7f2bSJakub Kicinski 497ff42bb9fSJakub Kicinski static void wrp_nops(struct nfp_prog *nfp_prog, unsigned int count) 498ff42bb9fSJakub Kicinski { 499ff42bb9fSJakub Kicinski while (count--) 500ff42bb9fSJakub Kicinski emit_nop(nfp_prog); 501ff42bb9fSJakub Kicinski } 502ff42bb9fSJakub Kicinski 503d9ae7f2bSJakub Kicinski static void 504d9ae7f2bSJakub Kicinski wrp_br_special(struct nfp_prog *nfp_prog, enum br_mask mask, 505d9ae7f2bSJakub Kicinski enum br_special special) 506d9ae7f2bSJakub Kicinski { 507d9ae7f2bSJakub Kicinski emit_br(nfp_prog, mask, 0, 0); 508d9ae7f2bSJakub Kicinski 509d9ae7f2bSJakub Kicinski nfp_prog->prog[nfp_prog->prog_len - 1] |= 510d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_SPECIAL, special); 511d9ae7f2bSJakub Kicinski } 512d9ae7f2bSJakub Kicinski 513c000dfb5SJakub Kicinski static void wrp_mov(struct nfp_prog *nfp_prog, swreg dst, swreg src) 514c000dfb5SJakub Kicinski { 515c000dfb5SJakub Kicinski emit_alu(nfp_prog, dst, reg_none(), ALU_OP_NONE, src); 516c000dfb5SJakub Kicinski } 517c000dfb5SJakub Kicinski 518d9ae7f2bSJakub Kicinski static void wrp_reg_mov(struct nfp_prog *nfp_prog, u16 dst, u16 src) 519d9ae7f2bSJakub Kicinski { 520c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_both(dst), reg_b(src)); 521d9ae7f2bSJakub Kicinski } 522d9ae7f2bSJakub Kicinski 523d9ae7f2bSJakub Kicinski static int 5240a793977SJakub Kicinski data_ld(struct nfp_prog *nfp_prog, swreg offset, u8 dst_gpr, int size) 525d9ae7f2bSJakub Kicinski { 526d9ae7f2bSJakub Kicinski unsigned int i; 527d9ae7f2bSJakub Kicinski u16 shift, sz; 528d9ae7f2bSJakub Kicinski 529d9ae7f2bSJakub Kicinski /* We load the value from the address indicated in @offset and then 530d9ae7f2bSJakub Kicinski * shift out the data we don't need. Note: this is big endian! 531d9ae7f2bSJakub Kicinski */ 5320a793977SJakub Kicinski sz = max(size, 4); 533d9ae7f2bSJakub Kicinski shift = size < 4 ? 4 - size : 0; 534d9ae7f2bSJakub Kicinski 5350a793977SJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_READ8, CMD_MODE_32b, 0, 5360a793977SJakub Kicinski pptr_reg(nfp_prog), offset, sz - 1, true); 5370a793977SJakub Kicinski 5380a793977SJakub Kicinski i = 0; 5390a793977SJakub Kicinski if (shift) 5400a793977SJakub Kicinski emit_shf(nfp_prog, reg_both(dst_gpr), reg_none(), SHF_OP_NONE, 5410a793977SJakub Kicinski reg_xfer(0), SHF_SC_R_SHF, shift * 8); 5420a793977SJakub Kicinski else 5430a793977SJakub Kicinski for (; i * 4 < size; i++) 5440a793977SJakub Kicinski wrp_mov(nfp_prog, reg_both(dst_gpr + i), reg_xfer(i)); 5450a793977SJakub Kicinski 5460a793977SJakub Kicinski if (i < 2) 5470a793977SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst_gpr + 1), 0); 5480a793977SJakub Kicinski 5490a793977SJakub Kicinski return 0; 5500a793977SJakub Kicinski } 5510a793977SJakub Kicinski 5520a793977SJakub Kicinski static int 5532ca71441SJakub Kicinski data_ld_host_order(struct nfp_prog *nfp_prog, u8 src_gpr, swreg offset, 5542ca71441SJakub Kicinski u8 dst_gpr, int size) 5552ca71441SJakub Kicinski { 5562ca71441SJakub Kicinski unsigned int i; 5572ca71441SJakub Kicinski u8 mask, sz; 5582ca71441SJakub Kicinski 5592ca71441SJakub Kicinski /* We load the value from the address indicated in @offset and then 5602ca71441SJakub Kicinski * mask out the data we don't need. Note: this is little endian! 5612ca71441SJakub Kicinski */ 5622ca71441SJakub Kicinski sz = max(size, 4); 5632ca71441SJakub Kicinski mask = size < 4 ? GENMASK(size - 1, 0) : 0; 5642ca71441SJakub Kicinski 5652ca71441SJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_READ32_SWAP, CMD_MODE_32b, 0, 5662ca71441SJakub Kicinski reg_a(src_gpr), offset, sz / 4 - 1, true); 5672ca71441SJakub Kicinski 5682ca71441SJakub Kicinski i = 0; 5692ca71441SJakub Kicinski if (mask) 5702ca71441SJakub Kicinski emit_ld_field_any(nfp_prog, reg_both(dst_gpr), mask, 5712ca71441SJakub Kicinski reg_xfer(0), SHF_SC_NONE, 0, true); 5722ca71441SJakub Kicinski else 5732ca71441SJakub Kicinski for (; i * 4 < size; i++) 5742ca71441SJakub Kicinski wrp_mov(nfp_prog, reg_both(dst_gpr + i), reg_xfer(i)); 5752ca71441SJakub Kicinski 5762ca71441SJakub Kicinski if (i < 2) 5772ca71441SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst_gpr + 1), 0); 5782ca71441SJakub Kicinski 5792ca71441SJakub Kicinski return 0; 5802ca71441SJakub Kicinski } 5812ca71441SJakub Kicinski 5822ca71441SJakub Kicinski static int 5830a793977SJakub Kicinski construct_data_ind_ld(struct nfp_prog *nfp_prog, u16 offset, u16 src, u8 size) 5840a793977SJakub Kicinski { 5850a793977SJakub Kicinski swreg tmp_reg; 5860a793977SJakub Kicinski 587d9ae7f2bSJakub Kicinski /* Calculate the true offset (src_reg + imm) */ 588d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, offset, imm_b(nfp_prog)); 5890a793977SJakub Kicinski emit_alu(nfp_prog, imm_both(nfp_prog), reg_a(src), ALU_OP_ADD, tmp_reg); 5900a793977SJakub Kicinski 591d9ae7f2bSJakub Kicinski /* Check packet length (size guaranteed to fit b/c it's u8) */ 592d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_a(nfp_prog), 593d9ae7f2bSJakub Kicinski imm_a(nfp_prog), ALU_OP_ADD, reg_imm(size)); 594d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 59518e53b6cSJakub Kicinski plen_reg(nfp_prog), ALU_OP_SUB, imm_a(nfp_prog)); 596d9ae7f2bSJakub Kicinski wrp_br_special(nfp_prog, BR_BLO, OP_BR_GO_ABORT); 5970a793977SJakub Kicinski 598d9ae7f2bSJakub Kicinski /* Load data */ 5990a793977SJakub Kicinski return data_ld(nfp_prog, imm_b(nfp_prog), 0, size); 600d9ae7f2bSJakub Kicinski } 601d9ae7f2bSJakub Kicinski 602d9ae7f2bSJakub Kicinski static int construct_data_ld(struct nfp_prog *nfp_prog, u16 offset, u8 size) 603d9ae7f2bSJakub Kicinski { 6040a793977SJakub Kicinski swreg tmp_reg; 6050a793977SJakub Kicinski 6060a793977SJakub Kicinski /* Check packet length */ 6070a793977SJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, offset + size, imm_a(nfp_prog)); 6080a793977SJakub Kicinski emit_alu(nfp_prog, reg_none(), plen_reg(nfp_prog), ALU_OP_SUB, tmp_reg); 6090a793977SJakub Kicinski wrp_br_special(nfp_prog, BR_BLO, OP_BR_GO_ABORT); 6100a793977SJakub Kicinski 6110a793977SJakub Kicinski /* Load data */ 6120a793977SJakub Kicinski tmp_reg = re_load_imm_any(nfp_prog, offset, imm_b(nfp_prog)); 6130a793977SJakub Kicinski return data_ld(nfp_prog, tmp_reg, 0, size); 614d9ae7f2bSJakub Kicinski } 615d9ae7f2bSJakub Kicinski 616e663fe38SJakub Kicinski static int 617e663fe38SJakub Kicinski data_stx_host_order(struct nfp_prog *nfp_prog, u8 dst_gpr, swreg offset, 618e663fe38SJakub Kicinski u8 src_gpr, u8 size) 619e663fe38SJakub Kicinski { 620e663fe38SJakub Kicinski unsigned int i; 621e663fe38SJakub Kicinski 622e663fe38SJakub Kicinski for (i = 0; i * 4 < size; i++) 623e663fe38SJakub Kicinski wrp_mov(nfp_prog, reg_xfer(i), reg_a(src_gpr + i)); 624e663fe38SJakub Kicinski 625e663fe38SJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_WRITE8_SWAP, CMD_MODE_32b, 0, 626e663fe38SJakub Kicinski reg_a(dst_gpr), offset, size - 1, true); 627e663fe38SJakub Kicinski 628e663fe38SJakub Kicinski return 0; 629e663fe38SJakub Kicinski } 630e663fe38SJakub Kicinski 631e663fe38SJakub Kicinski static int 632e663fe38SJakub Kicinski data_st_host_order(struct nfp_prog *nfp_prog, u8 dst_gpr, swreg offset, 633e663fe38SJakub Kicinski u64 imm, u8 size) 634e663fe38SJakub Kicinski { 635e663fe38SJakub Kicinski wrp_immed(nfp_prog, reg_xfer(0), imm); 636e663fe38SJakub Kicinski if (size == 8) 637e663fe38SJakub Kicinski wrp_immed(nfp_prog, reg_xfer(1), imm >> 32); 638e663fe38SJakub Kicinski 639e663fe38SJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_WRITE8_SWAP, CMD_MODE_32b, 0, 640e663fe38SJakub Kicinski reg_a(dst_gpr), offset, size - 1, true); 641e663fe38SJakub Kicinski 642e663fe38SJakub Kicinski return 0; 643e663fe38SJakub Kicinski } 644e663fe38SJakub Kicinski 645ee9133a8SJakub Kicinski typedef int 646ee9133a8SJakub Kicinski (*lmem_step)(struct nfp_prog *nfp_prog, u8 gpr, u8 gpr_byte, s32 off, 6479a90c83cSJakub Kicinski unsigned int size, bool first, bool new_gpr, bool last); 648a82b23fbSJakub Kicinski 649a82b23fbSJakub Kicinski static int 650a82b23fbSJakub Kicinski wrp_lmem_load(struct nfp_prog *nfp_prog, u8 dst, u8 dst_byte, s32 off, 6519a90c83cSJakub Kicinski unsigned int size, bool first, bool new_gpr, bool last) 652a82b23fbSJakub Kicinski { 653a82b23fbSJakub Kicinski u32 idx, src_byte; 654a82b23fbSJakub Kicinski enum shf_sc sc; 655a82b23fbSJakub Kicinski swreg reg; 656a82b23fbSJakub Kicinski int shf; 657a82b23fbSJakub Kicinski u8 mask; 658a82b23fbSJakub Kicinski 659a82b23fbSJakub Kicinski if (WARN_ON_ONCE(dst_byte + size > 4 || off % 4 + size > 4)) 660a82b23fbSJakub Kicinski return -EOPNOTSUPP; 661a82b23fbSJakub Kicinski 662a82b23fbSJakub Kicinski idx = off / 4; 663a82b23fbSJakub Kicinski 664a82b23fbSJakub Kicinski /* Move the entire word */ 665a82b23fbSJakub Kicinski if (size == 4) { 666a82b23fbSJakub Kicinski wrp_mov(nfp_prog, reg_both(dst), reg_lm(0, idx)); 667a82b23fbSJakub Kicinski return 0; 668a82b23fbSJakub Kicinski } 669a82b23fbSJakub Kicinski 670a82b23fbSJakub Kicinski src_byte = off % 4; 671a82b23fbSJakub Kicinski 672a82b23fbSJakub Kicinski mask = (1 << size) - 1; 673a82b23fbSJakub Kicinski mask <<= dst_byte; 674a82b23fbSJakub Kicinski 675a82b23fbSJakub Kicinski if (WARN_ON_ONCE(mask > 0xf)) 676a82b23fbSJakub Kicinski return -EOPNOTSUPP; 677a82b23fbSJakub Kicinski 678a82b23fbSJakub Kicinski shf = abs(src_byte - dst_byte) * 8; 679a82b23fbSJakub Kicinski if (src_byte == dst_byte) { 680a82b23fbSJakub Kicinski sc = SHF_SC_NONE; 681a82b23fbSJakub Kicinski } else if (src_byte < dst_byte) { 682a82b23fbSJakub Kicinski shf = 32 - shf; 683a82b23fbSJakub Kicinski sc = SHF_SC_L_SHF; 684a82b23fbSJakub Kicinski } else { 685a82b23fbSJakub Kicinski sc = SHF_SC_R_SHF; 686a82b23fbSJakub Kicinski } 687a82b23fbSJakub Kicinski 688a82b23fbSJakub Kicinski /* ld_field can address fewer indexes, if offset too large do RMW. 689a82b23fbSJakub Kicinski * Because we RMV twice we waste 2 cycles on unaligned 8 byte writes. 690a82b23fbSJakub Kicinski */ 691a82b23fbSJakub Kicinski if (idx <= RE_REG_LM_IDX_MAX) { 692a82b23fbSJakub Kicinski reg = reg_lm(0, idx); 693a82b23fbSJakub Kicinski } else { 694a82b23fbSJakub Kicinski reg = imm_a(nfp_prog); 6959a90c83cSJakub Kicinski /* If it's not the first part of the load and we start a new GPR 6969a90c83cSJakub Kicinski * that means we are loading a second part of the LMEM word into 6979a90c83cSJakub Kicinski * a new GPR. IOW we've already looked that LMEM word and 6989a90c83cSJakub Kicinski * therefore it has been loaded into imm_a(). 6999a90c83cSJakub Kicinski */ 7009a90c83cSJakub Kicinski if (first || !new_gpr) 701a82b23fbSJakub Kicinski wrp_mov(nfp_prog, reg, reg_lm(0, idx)); 702a82b23fbSJakub Kicinski } 703a82b23fbSJakub Kicinski 704a82b23fbSJakub Kicinski emit_ld_field_any(nfp_prog, reg_both(dst), mask, reg, sc, shf, new_gpr); 705a82b23fbSJakub Kicinski 706a82b23fbSJakub Kicinski return 0; 707a82b23fbSJakub Kicinski } 708ee9133a8SJakub Kicinski 709ee9133a8SJakub Kicinski static int 710ee9133a8SJakub Kicinski wrp_lmem_store(struct nfp_prog *nfp_prog, u8 src, u8 src_byte, s32 off, 7119a90c83cSJakub Kicinski unsigned int size, bool first, bool new_gpr, bool last) 712ee9133a8SJakub Kicinski { 713ee9133a8SJakub Kicinski u32 idx, dst_byte; 714ee9133a8SJakub Kicinski enum shf_sc sc; 715ee9133a8SJakub Kicinski swreg reg; 716ee9133a8SJakub Kicinski int shf; 717ee9133a8SJakub Kicinski u8 mask; 718ee9133a8SJakub Kicinski 719ee9133a8SJakub Kicinski if (WARN_ON_ONCE(src_byte + size > 4 || off % 4 + size > 4)) 720ee9133a8SJakub Kicinski return -EOPNOTSUPP; 721ee9133a8SJakub Kicinski 722ee9133a8SJakub Kicinski idx = off / 4; 723ee9133a8SJakub Kicinski 724ee9133a8SJakub Kicinski /* Move the entire word */ 725ee9133a8SJakub Kicinski if (size == 4) { 726ee9133a8SJakub Kicinski wrp_mov(nfp_prog, reg_lm(0, idx), reg_b(src)); 727ee9133a8SJakub Kicinski return 0; 728ee9133a8SJakub Kicinski } 729ee9133a8SJakub Kicinski 730ee9133a8SJakub Kicinski dst_byte = off % 4; 731ee9133a8SJakub Kicinski 732ee9133a8SJakub Kicinski mask = (1 << size) - 1; 733ee9133a8SJakub Kicinski mask <<= dst_byte; 734ee9133a8SJakub Kicinski 735ee9133a8SJakub Kicinski if (WARN_ON_ONCE(mask > 0xf)) 736ee9133a8SJakub Kicinski return -EOPNOTSUPP; 737ee9133a8SJakub Kicinski 738ee9133a8SJakub Kicinski shf = abs(src_byte - dst_byte) * 8; 739ee9133a8SJakub Kicinski if (src_byte == dst_byte) { 740ee9133a8SJakub Kicinski sc = SHF_SC_NONE; 741ee9133a8SJakub Kicinski } else if (src_byte < dst_byte) { 742ee9133a8SJakub Kicinski shf = 32 - shf; 743ee9133a8SJakub Kicinski sc = SHF_SC_L_SHF; 744ee9133a8SJakub Kicinski } else { 745ee9133a8SJakub Kicinski sc = SHF_SC_R_SHF; 746ee9133a8SJakub Kicinski } 747ee9133a8SJakub Kicinski 748ee9133a8SJakub Kicinski /* ld_field can address fewer indexes, if offset too large do RMW. 749ee9133a8SJakub Kicinski * Because we RMV twice we waste 2 cycles on unaligned 8 byte writes. 750ee9133a8SJakub Kicinski */ 751ee9133a8SJakub Kicinski if (idx <= RE_REG_LM_IDX_MAX) { 752ee9133a8SJakub Kicinski reg = reg_lm(0, idx); 753ee9133a8SJakub Kicinski } else { 754ee9133a8SJakub Kicinski reg = imm_a(nfp_prog); 7559a90c83cSJakub Kicinski /* Only first and last LMEM locations are going to need RMW, 7569a90c83cSJakub Kicinski * the middle location will be overwritten fully. 7579a90c83cSJakub Kicinski */ 7589a90c83cSJakub Kicinski if (first || last) 759ee9133a8SJakub Kicinski wrp_mov(nfp_prog, reg, reg_lm(0, idx)); 760ee9133a8SJakub Kicinski } 761ee9133a8SJakub Kicinski 762ee9133a8SJakub Kicinski emit_ld_field(nfp_prog, reg, mask, reg_b(src), sc, shf); 763ee9133a8SJakub Kicinski 7649a90c83cSJakub Kicinski if (new_gpr || last) { 765ee9133a8SJakub Kicinski if (idx > RE_REG_LM_IDX_MAX) 766ee9133a8SJakub Kicinski wrp_mov(nfp_prog, reg_lm(0, idx), reg); 7679a90c83cSJakub Kicinski } 768ee9133a8SJakub Kicinski 769ee9133a8SJakub Kicinski return 0; 770ee9133a8SJakub Kicinski } 771ee9133a8SJakub Kicinski 772ee9133a8SJakub Kicinski static int 773ee9133a8SJakub Kicinski mem_op_stack(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 774a82b23fbSJakub Kicinski unsigned int size, u8 gpr, bool clr_gpr, lmem_step step) 775ee9133a8SJakub Kicinski { 776ee9133a8SJakub Kicinski s32 off = nfp_prog->stack_depth + meta->insn.off; 7779a90c83cSJakub Kicinski bool first = true, last; 778a82b23fbSJakub Kicinski u8 prev_gpr = 255; 779ee9133a8SJakub Kicinski u32 gpr_byte = 0; 780ee9133a8SJakub Kicinski int ret; 781ee9133a8SJakub Kicinski 782a82b23fbSJakub Kicinski if (clr_gpr && size < 8) 783a82b23fbSJakub Kicinski wrp_immed(nfp_prog, reg_both(gpr + 1), 0); 784a82b23fbSJakub Kicinski 785ee9133a8SJakub Kicinski while (size) { 786ee9133a8SJakub Kicinski u32 slice_end; 787ee9133a8SJakub Kicinski u8 slice_size; 788ee9133a8SJakub Kicinski 789ee9133a8SJakub Kicinski slice_size = min(size, 4 - gpr_byte); 790ee9133a8SJakub Kicinski slice_end = min(off + slice_size, round_up(off + 1, 4)); 791ee9133a8SJakub Kicinski slice_size = slice_end - off; 792ee9133a8SJakub Kicinski 7939a90c83cSJakub Kicinski last = slice_size == size; 7949a90c83cSJakub Kicinski 795a82b23fbSJakub Kicinski ret = step(nfp_prog, gpr, gpr_byte, off, slice_size, 7969a90c83cSJakub Kicinski first, gpr != prev_gpr, last); 797ee9133a8SJakub Kicinski if (ret) 798ee9133a8SJakub Kicinski return ret; 799ee9133a8SJakub Kicinski 800a82b23fbSJakub Kicinski prev_gpr = gpr; 8019a90c83cSJakub Kicinski first = false; 8029a90c83cSJakub Kicinski 803ee9133a8SJakub Kicinski gpr_byte += slice_size; 804ee9133a8SJakub Kicinski if (gpr_byte >= 4) { 805ee9133a8SJakub Kicinski gpr_byte -= 4; 806ee9133a8SJakub Kicinski gpr++; 807ee9133a8SJakub Kicinski } 808ee9133a8SJakub Kicinski 809ee9133a8SJakub Kicinski size -= slice_size; 810ee9133a8SJakub Kicinski off += slice_size; 811ee9133a8SJakub Kicinski } 812ee9133a8SJakub Kicinski 813ee9133a8SJakub Kicinski return 0; 814ee9133a8SJakub Kicinski } 815ee9133a8SJakub Kicinski 816d9ae7f2bSJakub Kicinski static void 817d9ae7f2bSJakub Kicinski wrp_alu_imm(struct nfp_prog *nfp_prog, u8 dst, enum alu_op alu_op, u32 imm) 818d9ae7f2bSJakub Kicinski { 819b3f868dfSJakub Kicinski swreg tmp_reg; 820d9ae7f2bSJakub Kicinski 821d9ae7f2bSJakub Kicinski if (alu_op == ALU_OP_AND) { 822d9ae7f2bSJakub Kicinski if (!imm) 823d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), 0); 824d9ae7f2bSJakub Kicinski if (!imm || !~imm) 825d9ae7f2bSJakub Kicinski return; 826d9ae7f2bSJakub Kicinski } 827d9ae7f2bSJakub Kicinski if (alu_op == ALU_OP_OR) { 828d9ae7f2bSJakub Kicinski if (!~imm) 829d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), ~0U); 830d9ae7f2bSJakub Kicinski if (!imm || !~imm) 831d9ae7f2bSJakub Kicinski return; 832d9ae7f2bSJakub Kicinski } 833d9ae7f2bSJakub Kicinski if (alu_op == ALU_OP_XOR) { 834d9ae7f2bSJakub Kicinski if (!~imm) 835d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_none(), 836d9ae7f2bSJakub Kicinski ALU_OP_NEG, reg_b(dst)); 837d9ae7f2bSJakub Kicinski if (!imm || !~imm) 838d9ae7f2bSJakub Kicinski return; 839d9ae7f2bSJakub Kicinski } 840d9ae7f2bSJakub Kicinski 841d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm, imm_b(nfp_prog)); 842d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_a(dst), alu_op, tmp_reg); 843d9ae7f2bSJakub Kicinski } 844d9ae7f2bSJakub Kicinski 845d9ae7f2bSJakub Kicinski static int 846d9ae7f2bSJakub Kicinski wrp_alu64_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 847d9ae7f2bSJakub Kicinski enum alu_op alu_op, bool skip) 848d9ae7f2bSJakub Kicinski { 849d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 850d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 851d9ae7f2bSJakub Kicinski 852d9ae7f2bSJakub Kicinski if (skip) { 853d9ae7f2bSJakub Kicinski meta->skip = true; 854d9ae7f2bSJakub Kicinski return 0; 855d9ae7f2bSJakub Kicinski } 856d9ae7f2bSJakub Kicinski 857d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, alu_op, imm & ~0U); 858d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2 + 1, alu_op, imm >> 32); 859d9ae7f2bSJakub Kicinski 860d9ae7f2bSJakub Kicinski return 0; 861d9ae7f2bSJakub Kicinski } 862d9ae7f2bSJakub Kicinski 863d9ae7f2bSJakub Kicinski static int 864d9ae7f2bSJakub Kicinski wrp_alu64_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 865d9ae7f2bSJakub Kicinski enum alu_op alu_op) 866d9ae7f2bSJakub Kicinski { 867d9ae7f2bSJakub Kicinski u8 dst = meta->insn.dst_reg * 2, src = meta->insn.src_reg * 2; 868d9ae7f2bSJakub Kicinski 869d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_a(dst), alu_op, reg_b(src)); 870d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst + 1), 871d9ae7f2bSJakub Kicinski reg_a(dst + 1), alu_op, reg_b(src + 1)); 872d9ae7f2bSJakub Kicinski 873d9ae7f2bSJakub Kicinski return 0; 874d9ae7f2bSJakub Kicinski } 875d9ae7f2bSJakub Kicinski 876d9ae7f2bSJakub Kicinski static int 877d9ae7f2bSJakub Kicinski wrp_alu32_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 878d9ae7f2bSJakub Kicinski enum alu_op alu_op, bool skip) 879d9ae7f2bSJakub Kicinski { 880d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 881d9ae7f2bSJakub Kicinski 882d9ae7f2bSJakub Kicinski if (skip) { 883d9ae7f2bSJakub Kicinski meta->skip = true; 884d9ae7f2bSJakub Kicinski return 0; 885d9ae7f2bSJakub Kicinski } 886d9ae7f2bSJakub Kicinski 887d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, alu_op, insn->imm); 888d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 889d9ae7f2bSJakub Kicinski 890d9ae7f2bSJakub Kicinski return 0; 891d9ae7f2bSJakub Kicinski } 892d9ae7f2bSJakub Kicinski 893d9ae7f2bSJakub Kicinski static int 894d9ae7f2bSJakub Kicinski wrp_alu32_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 895d9ae7f2bSJakub Kicinski enum alu_op alu_op) 896d9ae7f2bSJakub Kicinski { 897d9ae7f2bSJakub Kicinski u8 dst = meta->insn.dst_reg * 2, src = meta->insn.src_reg * 2; 898d9ae7f2bSJakub Kicinski 899d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_a(dst), alu_op, reg_b(src)); 900d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 901d9ae7f2bSJakub Kicinski 902d9ae7f2bSJakub Kicinski return 0; 903d9ae7f2bSJakub Kicinski } 904d9ae7f2bSJakub Kicinski 905d9ae7f2bSJakub Kicinski static void 906d9ae7f2bSJakub Kicinski wrp_test_reg_one(struct nfp_prog *nfp_prog, u8 dst, enum alu_op alu_op, u8 src, 907d9ae7f2bSJakub Kicinski enum br_mask br_mask, u16 off) 908d9ae7f2bSJakub Kicinski { 909d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(dst), alu_op, reg_b(src)); 910d9ae7f2bSJakub Kicinski emit_br(nfp_prog, br_mask, off, 0); 911d9ae7f2bSJakub Kicinski } 912d9ae7f2bSJakub Kicinski 913d9ae7f2bSJakub Kicinski static int 914d9ae7f2bSJakub Kicinski wrp_test_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 915d9ae7f2bSJakub Kicinski enum alu_op alu_op, enum br_mask br_mask) 916d9ae7f2bSJakub Kicinski { 917d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 918d9ae7f2bSJakub Kicinski 919d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 920d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 921d9ae7f2bSJakub Kicinski 922d9ae7f2bSJakub Kicinski wrp_test_reg_one(nfp_prog, insn->dst_reg * 2, alu_op, 923d9ae7f2bSJakub Kicinski insn->src_reg * 2, br_mask, insn->off); 924d9ae7f2bSJakub Kicinski wrp_test_reg_one(nfp_prog, insn->dst_reg * 2 + 1, alu_op, 925d9ae7f2bSJakub Kicinski insn->src_reg * 2 + 1, br_mask, insn->off); 926d9ae7f2bSJakub Kicinski 927d9ae7f2bSJakub Kicinski return 0; 928d9ae7f2bSJakub Kicinski } 929d9ae7f2bSJakub Kicinski 930d9ae7f2bSJakub Kicinski static int 931d9ae7f2bSJakub Kicinski wrp_cmp_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 932d9ae7f2bSJakub Kicinski enum br_mask br_mask, bool swap) 933d9ae7f2bSJakub Kicinski { 934d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 935d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 936d9ae7f2bSJakub Kicinski u8 reg = insn->dst_reg * 2; 937b3f868dfSJakub Kicinski swreg tmp_reg; 938d9ae7f2bSJakub Kicinski 939d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 940d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 941d9ae7f2bSJakub Kicinski 942d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 943d9ae7f2bSJakub Kicinski if (!swap) 944d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(reg), ALU_OP_SUB, tmp_reg); 945d9ae7f2bSJakub Kicinski else 946d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), tmp_reg, ALU_OP_SUB, reg_a(reg)); 947d9ae7f2bSJakub Kicinski 948d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 949d9ae7f2bSJakub Kicinski if (!swap) 950d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 951d9ae7f2bSJakub Kicinski reg_a(reg + 1), ALU_OP_SUB_C, tmp_reg); 952d9ae7f2bSJakub Kicinski else 953d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 954d9ae7f2bSJakub Kicinski tmp_reg, ALU_OP_SUB_C, reg_a(reg + 1)); 955d9ae7f2bSJakub Kicinski 956d9ae7f2bSJakub Kicinski emit_br(nfp_prog, br_mask, insn->off, 0); 957d9ae7f2bSJakub Kicinski 958d9ae7f2bSJakub Kicinski return 0; 959d9ae7f2bSJakub Kicinski } 960d9ae7f2bSJakub Kicinski 961d9ae7f2bSJakub Kicinski static int 962d9ae7f2bSJakub Kicinski wrp_cmp_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 963d9ae7f2bSJakub Kicinski enum br_mask br_mask, bool swap) 964d9ae7f2bSJakub Kicinski { 965d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 96626fa818dSJakub Kicinski u8 areg, breg; 96726fa818dSJakub Kicinski 96826fa818dSJakub Kicinski areg = insn->dst_reg * 2; 96926fa818dSJakub Kicinski breg = insn->src_reg * 2; 970d9ae7f2bSJakub Kicinski 971d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 972d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 973d9ae7f2bSJakub Kicinski 974d9ae7f2bSJakub Kicinski if (swap) { 975d9ae7f2bSJakub Kicinski areg ^= breg; 976d9ae7f2bSJakub Kicinski breg ^= areg; 977d9ae7f2bSJakub Kicinski areg ^= breg; 978d9ae7f2bSJakub Kicinski } 979d9ae7f2bSJakub Kicinski 980d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(areg), ALU_OP_SUB, reg_b(breg)); 981d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 982d9ae7f2bSJakub Kicinski reg_a(areg + 1), ALU_OP_SUB_C, reg_b(breg + 1)); 983d9ae7f2bSJakub Kicinski emit_br(nfp_prog, br_mask, insn->off, 0); 984d9ae7f2bSJakub Kicinski 985d9ae7f2bSJakub Kicinski return 0; 986d9ae7f2bSJakub Kicinski } 987d9ae7f2bSJakub Kicinski 9883119d1fdSJakub Kicinski static void wrp_end32(struct nfp_prog *nfp_prog, swreg reg_in, u8 gpr_out) 9893119d1fdSJakub Kicinski { 9903119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr_out), 0xf, reg_in, 9913119d1fdSJakub Kicinski SHF_SC_R_ROT, 8); 9923119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr_out), 0x5, reg_a(gpr_out), 9933119d1fdSJakub Kicinski SHF_SC_R_ROT, 16); 9943119d1fdSJakub Kicinski } 9953119d1fdSJakub Kicinski 996d9ae7f2bSJakub Kicinski /* --- Callbacks --- */ 997d9ae7f2bSJakub Kicinski static int mov_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 998d9ae7f2bSJakub Kicinski { 999d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1000d9ae7f2bSJakub Kicinski 1001d9ae7f2bSJakub Kicinski wrp_reg_mov(nfp_prog, insn->dst_reg * 2, insn->src_reg * 2); 1002d9ae7f2bSJakub Kicinski wrp_reg_mov(nfp_prog, insn->dst_reg * 2 + 1, insn->src_reg * 2 + 1); 1003d9ae7f2bSJakub Kicinski 1004d9ae7f2bSJakub Kicinski return 0; 1005d9ae7f2bSJakub Kicinski } 1006d9ae7f2bSJakub Kicinski 1007d9ae7f2bSJakub Kicinski static int mov_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1008d9ae7f2bSJakub Kicinski { 1009d9ae7f2bSJakub Kicinski u64 imm = meta->insn.imm; /* sign extend */ 1010d9ae7f2bSJakub Kicinski 1011d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2), imm & ~0U); 1012d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), imm >> 32); 1013d9ae7f2bSJakub Kicinski 1014d9ae7f2bSJakub Kicinski return 0; 1015d9ae7f2bSJakub Kicinski } 1016d9ae7f2bSJakub Kicinski 1017d9ae7f2bSJakub Kicinski static int xor_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1018d9ae7f2bSJakub Kicinski { 1019d9ae7f2bSJakub Kicinski return wrp_alu64_reg(nfp_prog, meta, ALU_OP_XOR); 1020d9ae7f2bSJakub Kicinski } 1021d9ae7f2bSJakub Kicinski 1022d9ae7f2bSJakub Kicinski static int xor_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1023d9ae7f2bSJakub Kicinski { 1024d9ae7f2bSJakub Kicinski return wrp_alu64_imm(nfp_prog, meta, ALU_OP_XOR, !meta->insn.imm); 1025d9ae7f2bSJakub Kicinski } 1026d9ae7f2bSJakub Kicinski 1027d9ae7f2bSJakub Kicinski static int and_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1028d9ae7f2bSJakub Kicinski { 1029d9ae7f2bSJakub Kicinski return wrp_alu64_reg(nfp_prog, meta, ALU_OP_AND); 1030d9ae7f2bSJakub Kicinski } 1031d9ae7f2bSJakub Kicinski 1032d9ae7f2bSJakub Kicinski static int and_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1033d9ae7f2bSJakub Kicinski { 1034d9ae7f2bSJakub Kicinski return wrp_alu64_imm(nfp_prog, meta, ALU_OP_AND, !~meta->insn.imm); 1035d9ae7f2bSJakub Kicinski } 1036d9ae7f2bSJakub Kicinski 1037d9ae7f2bSJakub Kicinski static int or_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1038d9ae7f2bSJakub Kicinski { 1039d9ae7f2bSJakub Kicinski return wrp_alu64_reg(nfp_prog, meta, ALU_OP_OR); 1040d9ae7f2bSJakub Kicinski } 1041d9ae7f2bSJakub Kicinski 1042d9ae7f2bSJakub Kicinski static int or_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1043d9ae7f2bSJakub Kicinski { 1044d9ae7f2bSJakub Kicinski return wrp_alu64_imm(nfp_prog, meta, ALU_OP_OR, !meta->insn.imm); 1045d9ae7f2bSJakub Kicinski } 1046d9ae7f2bSJakub Kicinski 1047d9ae7f2bSJakub Kicinski static int add_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1048d9ae7f2bSJakub Kicinski { 1049d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1050d9ae7f2bSJakub Kicinski 1051d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2), 1052d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_ADD, 1053d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2)); 1054d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 1055d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_ADD_C, 1056d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2 + 1)); 1057d9ae7f2bSJakub Kicinski 1058d9ae7f2bSJakub Kicinski return 0; 1059d9ae7f2bSJakub Kicinski } 1060d9ae7f2bSJakub Kicinski 1061d9ae7f2bSJakub Kicinski static int add_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1062d9ae7f2bSJakub Kicinski { 1063d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1064d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1065d9ae7f2bSJakub Kicinski 1066d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, ALU_OP_ADD, imm & ~0U); 1067d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2 + 1, ALU_OP_ADD_C, imm >> 32); 1068d9ae7f2bSJakub Kicinski 1069d9ae7f2bSJakub Kicinski return 0; 1070d9ae7f2bSJakub Kicinski } 1071d9ae7f2bSJakub Kicinski 1072d9ae7f2bSJakub Kicinski static int sub_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1073d9ae7f2bSJakub Kicinski { 1074d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1075d9ae7f2bSJakub Kicinski 1076d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2), 1077d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_SUB, 1078d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2)); 1079d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 1080d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_SUB_C, 1081d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2 + 1)); 1082d9ae7f2bSJakub Kicinski 1083d9ae7f2bSJakub Kicinski return 0; 1084d9ae7f2bSJakub Kicinski } 1085d9ae7f2bSJakub Kicinski 1086d9ae7f2bSJakub Kicinski static int sub_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1087d9ae7f2bSJakub Kicinski { 1088d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1089d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1090d9ae7f2bSJakub Kicinski 1091d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, ALU_OP_SUB, imm & ~0U); 1092d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2 + 1, ALU_OP_SUB_C, imm >> 32); 1093d9ae7f2bSJakub Kicinski 1094d9ae7f2bSJakub Kicinski return 0; 1095d9ae7f2bSJakub Kicinski } 1096d9ae7f2bSJakub Kicinski 1097d9ae7f2bSJakub Kicinski static int shl_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1098d9ae7f2bSJakub Kicinski { 1099d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 11003cae1319SJakub Kicinski u8 dst = insn->dst_reg * 2; 1101d9ae7f2bSJakub Kicinski 11023cae1319SJakub Kicinski if (insn->imm < 32) { 11033cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst + 1), 11043cae1319SJakub Kicinski reg_a(dst + 1), SHF_OP_NONE, reg_b(dst), 11053cae1319SJakub Kicinski SHF_SC_R_DSHF, 32 - insn->imm); 11063cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst), 11073cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst), 11083cae1319SJakub Kicinski SHF_SC_L_SHF, insn->imm); 11093cae1319SJakub Kicinski } else if (insn->imm == 32) { 11103cae1319SJakub Kicinski wrp_reg_mov(nfp_prog, dst + 1, dst); 11113cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), 0); 11123cae1319SJakub Kicinski } else if (insn->imm > 32) { 11133cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst + 1), 11143cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst), 11153cae1319SJakub Kicinski SHF_SC_L_SHF, insn->imm - 32); 11163cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), 0); 11173cae1319SJakub Kicinski } 1118d9ae7f2bSJakub Kicinski 1119d9ae7f2bSJakub Kicinski return 0; 1120d9ae7f2bSJakub Kicinski } 1121d9ae7f2bSJakub Kicinski 1122d9ae7f2bSJakub Kicinski static int shr_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1123d9ae7f2bSJakub Kicinski { 1124d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 11253cae1319SJakub Kicinski u8 dst = insn->dst_reg * 2; 1126d9ae7f2bSJakub Kicinski 11273cae1319SJakub Kicinski if (insn->imm < 32) { 11283cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst), 11293cae1319SJakub Kicinski reg_a(dst + 1), SHF_OP_NONE, reg_b(dst), 11303cae1319SJakub Kicinski SHF_SC_R_DSHF, insn->imm); 11313cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst + 1), 11323cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst + 1), 11333cae1319SJakub Kicinski SHF_SC_R_SHF, insn->imm); 11343cae1319SJakub Kicinski } else if (insn->imm == 32) { 11353cae1319SJakub Kicinski wrp_reg_mov(nfp_prog, dst, dst + 1); 11363cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst + 1), 0); 11373cae1319SJakub Kicinski } else if (insn->imm > 32) { 11383cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst), 11393cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst + 1), 11403cae1319SJakub Kicinski SHF_SC_R_SHF, insn->imm - 32); 11413cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst + 1), 0); 11423cae1319SJakub Kicinski } 1143d9ae7f2bSJakub Kicinski 1144d9ae7f2bSJakub Kicinski return 0; 1145d9ae7f2bSJakub Kicinski } 1146d9ae7f2bSJakub Kicinski 1147d9ae7f2bSJakub Kicinski static int mov_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1148d9ae7f2bSJakub Kicinski { 1149d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1150d9ae7f2bSJakub Kicinski 1151d9ae7f2bSJakub Kicinski wrp_reg_mov(nfp_prog, insn->dst_reg * 2, insn->src_reg * 2); 1152d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 1153d9ae7f2bSJakub Kicinski 1154d9ae7f2bSJakub Kicinski return 0; 1155d9ae7f2bSJakub Kicinski } 1156d9ae7f2bSJakub Kicinski 1157d9ae7f2bSJakub Kicinski static int mov_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1158d9ae7f2bSJakub Kicinski { 1159d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1160d9ae7f2bSJakub Kicinski 1161d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2), insn->imm); 1162d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 1163d9ae7f2bSJakub Kicinski 1164d9ae7f2bSJakub Kicinski return 0; 1165d9ae7f2bSJakub Kicinski } 1166d9ae7f2bSJakub Kicinski 1167d9ae7f2bSJakub Kicinski static int xor_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1168d9ae7f2bSJakub Kicinski { 1169d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_XOR); 1170d9ae7f2bSJakub Kicinski } 1171d9ae7f2bSJakub Kicinski 1172d9ae7f2bSJakub Kicinski static int xor_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1173d9ae7f2bSJakub Kicinski { 1174d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_XOR, !~meta->insn.imm); 1175d9ae7f2bSJakub Kicinski } 1176d9ae7f2bSJakub Kicinski 1177d9ae7f2bSJakub Kicinski static int and_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1178d9ae7f2bSJakub Kicinski { 1179d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_AND); 1180d9ae7f2bSJakub Kicinski } 1181d9ae7f2bSJakub Kicinski 1182d9ae7f2bSJakub Kicinski static int and_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1183d9ae7f2bSJakub Kicinski { 1184d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_AND, !~meta->insn.imm); 1185d9ae7f2bSJakub Kicinski } 1186d9ae7f2bSJakub Kicinski 1187d9ae7f2bSJakub Kicinski static int or_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1188d9ae7f2bSJakub Kicinski { 1189d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_OR); 1190d9ae7f2bSJakub Kicinski } 1191d9ae7f2bSJakub Kicinski 1192d9ae7f2bSJakub Kicinski static int or_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1193d9ae7f2bSJakub Kicinski { 1194d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_OR, !meta->insn.imm); 1195d9ae7f2bSJakub Kicinski } 1196d9ae7f2bSJakub Kicinski 1197d9ae7f2bSJakub Kicinski static int add_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1198d9ae7f2bSJakub Kicinski { 1199d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_ADD); 1200d9ae7f2bSJakub Kicinski } 1201d9ae7f2bSJakub Kicinski 1202d9ae7f2bSJakub Kicinski static int add_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1203d9ae7f2bSJakub Kicinski { 1204d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_ADD, !meta->insn.imm); 1205d9ae7f2bSJakub Kicinski } 1206d9ae7f2bSJakub Kicinski 1207d9ae7f2bSJakub Kicinski static int sub_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1208d9ae7f2bSJakub Kicinski { 1209d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_SUB); 1210d9ae7f2bSJakub Kicinski } 1211d9ae7f2bSJakub Kicinski 1212d9ae7f2bSJakub Kicinski static int sub_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1213d9ae7f2bSJakub Kicinski { 1214d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_SUB, !meta->insn.imm); 1215d9ae7f2bSJakub Kicinski } 1216d9ae7f2bSJakub Kicinski 1217d9ae7f2bSJakub Kicinski static int shl_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1218d9ae7f2bSJakub Kicinski { 1219d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1220d9ae7f2bSJakub Kicinski 1221d9ae7f2bSJakub Kicinski if (!insn->imm) 1222d9ae7f2bSJakub Kicinski return 1; /* TODO: zero shift means indirect */ 1223d9ae7f2bSJakub Kicinski 1224d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_both(insn->dst_reg * 2), 1225d9ae7f2bSJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(insn->dst_reg * 2), 1226d9ae7f2bSJakub Kicinski SHF_SC_L_SHF, insn->imm); 1227d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 1228d9ae7f2bSJakub Kicinski 1229d9ae7f2bSJakub Kicinski return 0; 1230d9ae7f2bSJakub Kicinski } 1231d9ae7f2bSJakub Kicinski 12323119d1fdSJakub Kicinski static int end_reg32(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 12333119d1fdSJakub Kicinski { 12343119d1fdSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 12353119d1fdSJakub Kicinski u8 gpr = insn->dst_reg * 2; 12363119d1fdSJakub Kicinski 12373119d1fdSJakub Kicinski switch (insn->imm) { 12383119d1fdSJakub Kicinski case 16: 12393119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr), 0x9, reg_b(gpr), 12403119d1fdSJakub Kicinski SHF_SC_R_ROT, 8); 12413119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr), 0xe, reg_a(gpr), 12423119d1fdSJakub Kicinski SHF_SC_R_SHF, 16); 12433119d1fdSJakub Kicinski 12443119d1fdSJakub Kicinski wrp_immed(nfp_prog, reg_both(gpr + 1), 0); 12453119d1fdSJakub Kicinski break; 12463119d1fdSJakub Kicinski case 32: 12473119d1fdSJakub Kicinski wrp_end32(nfp_prog, reg_a(gpr), gpr); 12483119d1fdSJakub Kicinski wrp_immed(nfp_prog, reg_both(gpr + 1), 0); 12493119d1fdSJakub Kicinski break; 12503119d1fdSJakub Kicinski case 64: 12513119d1fdSJakub Kicinski wrp_mov(nfp_prog, imm_a(nfp_prog), reg_b(gpr + 1)); 12523119d1fdSJakub Kicinski 12533119d1fdSJakub Kicinski wrp_end32(nfp_prog, reg_a(gpr), gpr + 1); 12543119d1fdSJakub Kicinski wrp_end32(nfp_prog, imm_a(nfp_prog), gpr); 12553119d1fdSJakub Kicinski break; 12563119d1fdSJakub Kicinski } 12573119d1fdSJakub Kicinski 12583119d1fdSJakub Kicinski return 0; 12593119d1fdSJakub Kicinski } 12603119d1fdSJakub Kicinski 1261d9ae7f2bSJakub Kicinski static int imm_ld8_part2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1262d9ae7f2bSJakub Kicinski { 1263d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(nfp_meta_prev(meta)->insn.dst_reg * 2 + 1), 1264d9ae7f2bSJakub Kicinski meta->insn.imm); 1265d9ae7f2bSJakub Kicinski 1266d9ae7f2bSJakub Kicinski return 0; 1267d9ae7f2bSJakub Kicinski } 1268d9ae7f2bSJakub Kicinski 1269d9ae7f2bSJakub Kicinski static int imm_ld8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1270d9ae7f2bSJakub Kicinski { 1271d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1272d9ae7f2bSJakub Kicinski 1273d9ae7f2bSJakub Kicinski meta->double_cb = imm_ld8_part2; 1274d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2), insn->imm); 1275d9ae7f2bSJakub Kicinski 1276d9ae7f2bSJakub Kicinski return 0; 1277d9ae7f2bSJakub Kicinski } 1278d9ae7f2bSJakub Kicinski 1279d9ae7f2bSJakub Kicinski static int data_ld1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1280d9ae7f2bSJakub Kicinski { 1281d9ae7f2bSJakub Kicinski return construct_data_ld(nfp_prog, meta->insn.imm, 1); 1282d9ae7f2bSJakub Kicinski } 1283d9ae7f2bSJakub Kicinski 1284d9ae7f2bSJakub Kicinski static int data_ld2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1285d9ae7f2bSJakub Kicinski { 1286d9ae7f2bSJakub Kicinski return construct_data_ld(nfp_prog, meta->insn.imm, 2); 1287d9ae7f2bSJakub Kicinski } 1288d9ae7f2bSJakub Kicinski 1289d9ae7f2bSJakub Kicinski static int data_ld4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1290d9ae7f2bSJakub Kicinski { 1291d9ae7f2bSJakub Kicinski return construct_data_ld(nfp_prog, meta->insn.imm, 4); 1292d9ae7f2bSJakub Kicinski } 1293d9ae7f2bSJakub Kicinski 1294d9ae7f2bSJakub Kicinski static int data_ind_ld1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1295d9ae7f2bSJakub Kicinski { 1296d9ae7f2bSJakub Kicinski return construct_data_ind_ld(nfp_prog, meta->insn.imm, 12970a793977SJakub Kicinski meta->insn.src_reg * 2, 1); 1298d9ae7f2bSJakub Kicinski } 1299d9ae7f2bSJakub Kicinski 1300d9ae7f2bSJakub Kicinski static int data_ind_ld2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1301d9ae7f2bSJakub Kicinski { 1302d9ae7f2bSJakub Kicinski return construct_data_ind_ld(nfp_prog, meta->insn.imm, 13030a793977SJakub Kicinski meta->insn.src_reg * 2, 2); 1304d9ae7f2bSJakub Kicinski } 1305d9ae7f2bSJakub Kicinski 1306d9ae7f2bSJakub Kicinski static int data_ind_ld4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1307d9ae7f2bSJakub Kicinski { 1308d9ae7f2bSJakub Kicinski return construct_data_ind_ld(nfp_prog, meta->insn.imm, 13090a793977SJakub Kicinski meta->insn.src_reg * 2, 4); 1310d9ae7f2bSJakub Kicinski } 1311d9ae7f2bSJakub Kicinski 1312a82b23fbSJakub Kicinski static int 1313a82b23fbSJakub Kicinski mem_ldx_stack(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1314a82b23fbSJakub Kicinski unsigned int size) 1315a82b23fbSJakub Kicinski { 1316a82b23fbSJakub Kicinski return mem_op_stack(nfp_prog, meta, size, meta->insn.dst_reg * 2, true, 1317a82b23fbSJakub Kicinski wrp_lmem_load); 1318a82b23fbSJakub Kicinski } 1319a82b23fbSJakub Kicinski 1320943c57b9SJakub Kicinski static int mem_ldx_skb(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1321943c57b9SJakub Kicinski u8 size) 1322d9ae7f2bSJakub Kicinski { 1323bfddbc8aSJakub Kicinski swreg dst = reg_both(meta->insn.dst_reg * 2); 1324bfddbc8aSJakub Kicinski 1325943c57b9SJakub Kicinski switch (meta->insn.off) { 1326943c57b9SJakub Kicinski case offsetof(struct sk_buff, len): 1327943c57b9SJakub Kicinski if (size != FIELD_SIZEOF(struct sk_buff, len)) 1328943c57b9SJakub Kicinski return -EOPNOTSUPP; 1329bfddbc8aSJakub Kicinski wrp_mov(nfp_prog, dst, plen_reg(nfp_prog)); 1330bfddbc8aSJakub Kicinski break; 1331bfddbc8aSJakub Kicinski case offsetof(struct sk_buff, data): 1332bfddbc8aSJakub Kicinski if (size != sizeof(void *)) 1333bfddbc8aSJakub Kicinski return -EOPNOTSUPP; 1334bfddbc8aSJakub Kicinski wrp_mov(nfp_prog, dst, pptr_reg(nfp_prog)); 1335bfddbc8aSJakub Kicinski break; 1336bfddbc8aSJakub Kicinski case offsetof(struct sk_buff, cb) + 1337bfddbc8aSJakub Kicinski offsetof(struct bpf_skb_data_end, data_end): 1338bfddbc8aSJakub Kicinski if (size != sizeof(void *)) 1339bfddbc8aSJakub Kicinski return -EOPNOTSUPP; 1340bfddbc8aSJakub Kicinski emit_alu(nfp_prog, dst, 1341bfddbc8aSJakub Kicinski plen_reg(nfp_prog), ALU_OP_ADD, pptr_reg(nfp_prog)); 1342943c57b9SJakub Kicinski break; 1343943c57b9SJakub Kicinski default: 1344d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1345943c57b9SJakub Kicinski } 1346943c57b9SJakub Kicinski 1347943c57b9SJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 1348d9ae7f2bSJakub Kicinski 1349d9ae7f2bSJakub Kicinski return 0; 1350d9ae7f2bSJakub Kicinski } 1351d9ae7f2bSJakub Kicinski 1352943c57b9SJakub Kicinski static int mem_ldx_xdp(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1353943c57b9SJakub Kicinski u8 size) 1354d9ae7f2bSJakub Kicinski { 1355b3f868dfSJakub Kicinski swreg dst = reg_both(meta->insn.dst_reg * 2); 1356d9ae7f2bSJakub Kicinski 1357943c57b9SJakub Kicinski if (size != sizeof(void *)) 1358943c57b9SJakub Kicinski return -EINVAL; 1359d9ae7f2bSJakub Kicinski 1360943c57b9SJakub Kicinski switch (meta->insn.off) { 1361943c57b9SJakub Kicinski case offsetof(struct xdp_buff, data): 1362c000dfb5SJakub Kicinski wrp_mov(nfp_prog, dst, pptr_reg(nfp_prog)); 1363943c57b9SJakub Kicinski break; 1364943c57b9SJakub Kicinski case offsetof(struct xdp_buff, data_end): 1365943c57b9SJakub Kicinski emit_alu(nfp_prog, dst, 1366943c57b9SJakub Kicinski plen_reg(nfp_prog), ALU_OP_ADD, pptr_reg(nfp_prog)); 1367943c57b9SJakub Kicinski break; 1368943c57b9SJakub Kicinski default: 1369943c57b9SJakub Kicinski return -EOPNOTSUPP; 1370943c57b9SJakub Kicinski } 1371d9ae7f2bSJakub Kicinski 1372943c57b9SJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 1373d9ae7f2bSJakub Kicinski 1374d9ae7f2bSJakub Kicinski return 0; 1375d9ae7f2bSJakub Kicinski } 1376d9ae7f2bSJakub Kicinski 13772ca71441SJakub Kicinski static int 13782ca71441SJakub Kicinski mem_ldx_data(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 13792ca71441SJakub Kicinski unsigned int size) 13802ca71441SJakub Kicinski { 13812ca71441SJakub Kicinski swreg tmp_reg; 13822ca71441SJakub Kicinski 13832ca71441SJakub Kicinski tmp_reg = re_load_imm_any(nfp_prog, meta->insn.off, imm_b(nfp_prog)); 13842ca71441SJakub Kicinski 13852ca71441SJakub Kicinski return data_ld_host_order(nfp_prog, meta->insn.src_reg * 2, tmp_reg, 13862ca71441SJakub Kicinski meta->insn.dst_reg * 2, size); 13872ca71441SJakub Kicinski } 13882ca71441SJakub Kicinski 13892ca71441SJakub Kicinski static int 13902ca71441SJakub Kicinski mem_ldx(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 13912ca71441SJakub Kicinski unsigned int size) 13922ca71441SJakub Kicinski { 13932ca71441SJakub Kicinski if (meta->ptr.type == PTR_TO_CTX) { 13942ca71441SJakub Kicinski if (nfp_prog->act == NN_ACT_XDP) 13952ca71441SJakub Kicinski return mem_ldx_xdp(nfp_prog, meta, size); 13962ca71441SJakub Kicinski else 13972ca71441SJakub Kicinski return mem_ldx_skb(nfp_prog, meta, size); 13982ca71441SJakub Kicinski } 13992ca71441SJakub Kicinski 14002ca71441SJakub Kicinski if (meta->ptr.type == PTR_TO_PACKET) 14012ca71441SJakub Kicinski return mem_ldx_data(nfp_prog, meta, size); 14022ca71441SJakub Kicinski 1403a82b23fbSJakub Kicinski if (meta->ptr.type == PTR_TO_STACK) 1404a82b23fbSJakub Kicinski return mem_ldx_stack(nfp_prog, meta, size); 1405a82b23fbSJakub Kicinski 14062ca71441SJakub Kicinski return -EOPNOTSUPP; 14072ca71441SJakub Kicinski } 14082ca71441SJakub Kicinski 14092ca71441SJakub Kicinski static int mem_ldx1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 14102ca71441SJakub Kicinski { 14112ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 1); 14122ca71441SJakub Kicinski } 14132ca71441SJakub Kicinski 14142ca71441SJakub Kicinski static int mem_ldx2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 14152ca71441SJakub Kicinski { 14162ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 2); 14172ca71441SJakub Kicinski } 14182ca71441SJakub Kicinski 1419d9ae7f2bSJakub Kicinski static int mem_ldx4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1420d9ae7f2bSJakub Kicinski { 14212ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 4); 14222ca71441SJakub Kicinski } 14232ca71441SJakub Kicinski 14242ca71441SJakub Kicinski static int mem_ldx8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 14252ca71441SJakub Kicinski { 14262ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 8); 1427d9ae7f2bSJakub Kicinski } 1428d9ae7f2bSJakub Kicinski 1429e663fe38SJakub Kicinski static int 1430e663fe38SJakub Kicinski mem_st_data(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1431e663fe38SJakub Kicinski unsigned int size) 1432d9ae7f2bSJakub Kicinski { 1433e663fe38SJakub Kicinski u64 imm = meta->insn.imm; /* sign extend */ 1434e663fe38SJakub Kicinski swreg off_reg; 1435e663fe38SJakub Kicinski 1436e663fe38SJakub Kicinski off_reg = re_load_imm_any(nfp_prog, meta->insn.off, imm_b(nfp_prog)); 1437e663fe38SJakub Kicinski 1438e663fe38SJakub Kicinski return data_st_host_order(nfp_prog, meta->insn.dst_reg * 2, off_reg, 1439e663fe38SJakub Kicinski imm, size); 1440e663fe38SJakub Kicinski } 1441e663fe38SJakub Kicinski 1442e663fe38SJakub Kicinski static int mem_st(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1443e663fe38SJakub Kicinski unsigned int size) 1444e663fe38SJakub Kicinski { 1445e663fe38SJakub Kicinski if (meta->ptr.type == PTR_TO_PACKET) 1446e663fe38SJakub Kicinski return mem_st_data(nfp_prog, meta, size); 1447e663fe38SJakub Kicinski 1448d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1449d9ae7f2bSJakub Kicinski } 1450d9ae7f2bSJakub Kicinski 1451e663fe38SJakub Kicinski static int mem_st1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1452d9ae7f2bSJakub Kicinski { 1453e663fe38SJakub Kicinski return mem_st(nfp_prog, meta, 1); 1454e663fe38SJakub Kicinski } 1455e663fe38SJakub Kicinski 1456e663fe38SJakub Kicinski static int mem_st2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1457e663fe38SJakub Kicinski { 1458e663fe38SJakub Kicinski return mem_st(nfp_prog, meta, 2); 1459e663fe38SJakub Kicinski } 1460e663fe38SJakub Kicinski 1461e663fe38SJakub Kicinski static int mem_st4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1462e663fe38SJakub Kicinski { 1463e663fe38SJakub Kicinski return mem_st(nfp_prog, meta, 4); 1464e663fe38SJakub Kicinski } 1465e663fe38SJakub Kicinski 1466e663fe38SJakub Kicinski static int mem_st8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1467e663fe38SJakub Kicinski { 1468e663fe38SJakub Kicinski return mem_st(nfp_prog, meta, 8); 1469e663fe38SJakub Kicinski } 1470e663fe38SJakub Kicinski 1471e663fe38SJakub Kicinski static int 1472e663fe38SJakub Kicinski mem_stx_data(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1473e663fe38SJakub Kicinski unsigned int size) 1474e663fe38SJakub Kicinski { 1475e663fe38SJakub Kicinski swreg off_reg; 1476e663fe38SJakub Kicinski 1477e663fe38SJakub Kicinski off_reg = re_load_imm_any(nfp_prog, meta->insn.off, imm_b(nfp_prog)); 1478e663fe38SJakub Kicinski 1479e663fe38SJakub Kicinski return data_stx_host_order(nfp_prog, meta->insn.dst_reg * 2, off_reg, 1480e663fe38SJakub Kicinski meta->insn.src_reg * 2, size); 1481e663fe38SJakub Kicinski } 1482e663fe38SJakub Kicinski 1483e663fe38SJakub Kicinski static int 1484ee9133a8SJakub Kicinski mem_stx_stack(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1485ee9133a8SJakub Kicinski unsigned int size) 1486ee9133a8SJakub Kicinski { 1487a82b23fbSJakub Kicinski return mem_op_stack(nfp_prog, meta, size, meta->insn.src_reg * 2, false, 1488ee9133a8SJakub Kicinski wrp_lmem_store); 1489ee9133a8SJakub Kicinski } 1490ee9133a8SJakub Kicinski 1491ee9133a8SJakub Kicinski static int 1492e663fe38SJakub Kicinski mem_stx(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1493e663fe38SJakub Kicinski unsigned int size) 1494e663fe38SJakub Kicinski { 1495e663fe38SJakub Kicinski if (meta->ptr.type == PTR_TO_PACKET) 1496e663fe38SJakub Kicinski return mem_stx_data(nfp_prog, meta, size); 1497e663fe38SJakub Kicinski 1498ee9133a8SJakub Kicinski if (meta->ptr.type == PTR_TO_STACK) 1499ee9133a8SJakub Kicinski return mem_stx_stack(nfp_prog, meta, size); 1500ee9133a8SJakub Kicinski 1501d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1502d9ae7f2bSJakub Kicinski } 1503d9ae7f2bSJakub Kicinski 1504e663fe38SJakub Kicinski static int mem_stx1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1505e663fe38SJakub Kicinski { 1506e663fe38SJakub Kicinski return mem_stx(nfp_prog, meta, 1); 1507e663fe38SJakub Kicinski } 1508e663fe38SJakub Kicinski 1509e663fe38SJakub Kicinski static int mem_stx2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1510e663fe38SJakub Kicinski { 1511e663fe38SJakub Kicinski return mem_stx(nfp_prog, meta, 2); 1512e663fe38SJakub Kicinski } 1513e663fe38SJakub Kicinski 1514d9ae7f2bSJakub Kicinski static int mem_stx4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1515d9ae7f2bSJakub Kicinski { 1516e663fe38SJakub Kicinski return mem_stx(nfp_prog, meta, 4); 1517e663fe38SJakub Kicinski } 15182ca71441SJakub Kicinski 1519e663fe38SJakub Kicinski static int mem_stx8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1520e663fe38SJakub Kicinski { 1521e663fe38SJakub Kicinski return mem_stx(nfp_prog, meta, 8); 1522d9ae7f2bSJakub Kicinski } 1523d9ae7f2bSJakub Kicinski 1524d9ae7f2bSJakub Kicinski static int jump(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1525d9ae7f2bSJakub Kicinski { 1526d9ae7f2bSJakub Kicinski if (meta->insn.off < 0) /* TODO */ 1527d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1528d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_UNC, meta->insn.off, 0); 1529d9ae7f2bSJakub Kicinski 1530d9ae7f2bSJakub Kicinski return 0; 1531d9ae7f2bSJakub Kicinski } 1532d9ae7f2bSJakub Kicinski 1533d9ae7f2bSJakub Kicinski static int jeq_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1534d9ae7f2bSJakub Kicinski { 1535d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1536d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1537b3f868dfSJakub Kicinski swreg or1, or2, tmp_reg; 1538b3f868dfSJakub Kicinski 1539b3f868dfSJakub Kicinski or1 = reg_a(insn->dst_reg * 2); 1540b3f868dfSJakub Kicinski or2 = reg_b(insn->dst_reg * 2 + 1); 1541d9ae7f2bSJakub Kicinski 1542d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 1543d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1544d9ae7f2bSJakub Kicinski 1545d9ae7f2bSJakub Kicinski if (imm & ~0U) { 1546d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 1547d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_a(nfp_prog), 1548d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_XOR, tmp_reg); 1549d9ae7f2bSJakub Kicinski or1 = imm_a(nfp_prog); 1550d9ae7f2bSJakub Kicinski } 1551d9ae7f2bSJakub Kicinski 1552d9ae7f2bSJakub Kicinski if (imm >> 32) { 1553d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 1554d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), 1555d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_XOR, tmp_reg); 1556d9ae7f2bSJakub Kicinski or2 = imm_b(nfp_prog); 1557d9ae7f2bSJakub Kicinski } 1558d9ae7f2bSJakub Kicinski 1559d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), or1, ALU_OP_OR, or2); 1560d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BEQ, insn->off, 0); 1561d9ae7f2bSJakub Kicinski 1562d9ae7f2bSJakub Kicinski return 0; 1563d9ae7f2bSJakub Kicinski } 1564d9ae7f2bSJakub Kicinski 1565d9ae7f2bSJakub Kicinski static int jgt_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1566d9ae7f2bSJakub Kicinski { 156726fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BLO, true); 1568d9ae7f2bSJakub Kicinski } 1569d9ae7f2bSJakub Kicinski 1570d9ae7f2bSJakub Kicinski static int jge_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1571d9ae7f2bSJakub Kicinski { 157226fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BHS, false); 1573d9ae7f2bSJakub Kicinski } 1574d9ae7f2bSJakub Kicinski 15755dd294d4SDaniel Borkmann static int jlt_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 15765dd294d4SDaniel Borkmann { 157726fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BLO, false); 15785dd294d4SDaniel Borkmann } 15795dd294d4SDaniel Borkmann 15805dd294d4SDaniel Borkmann static int jle_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 15815dd294d4SDaniel Borkmann { 158226fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BHS, true); 15835dd294d4SDaniel Borkmann } 15845dd294d4SDaniel Borkmann 1585d9ae7f2bSJakub Kicinski static int jset_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1586d9ae7f2bSJakub Kicinski { 1587d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1588d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1589b3f868dfSJakub Kicinski swreg tmp_reg; 1590d9ae7f2bSJakub Kicinski 1591d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 1592d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1593d9ae7f2bSJakub Kicinski 1594d9ae7f2bSJakub Kicinski if (!imm) { 1595d9ae7f2bSJakub Kicinski meta->skip = true; 1596d9ae7f2bSJakub Kicinski return 0; 1597d9ae7f2bSJakub Kicinski } 1598d9ae7f2bSJakub Kicinski 1599d9ae7f2bSJakub Kicinski if (imm & ~0U) { 1600d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 1601d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1602d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_AND, tmp_reg); 1603d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1604d9ae7f2bSJakub Kicinski } 1605d9ae7f2bSJakub Kicinski 1606d9ae7f2bSJakub Kicinski if (imm >> 32) { 1607d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 1608d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1609d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_AND, tmp_reg); 1610d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1611d9ae7f2bSJakub Kicinski } 1612d9ae7f2bSJakub Kicinski 1613d9ae7f2bSJakub Kicinski return 0; 1614d9ae7f2bSJakub Kicinski } 1615d9ae7f2bSJakub Kicinski 1616d9ae7f2bSJakub Kicinski static int jne_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1617d9ae7f2bSJakub Kicinski { 1618d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1619d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1620b3f868dfSJakub Kicinski swreg tmp_reg; 1621d9ae7f2bSJakub Kicinski 1622d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 1623d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1624d9ae7f2bSJakub Kicinski 1625d9ae7f2bSJakub Kicinski if (!imm) { 1626d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(insn->dst_reg * 2), 1627d9ae7f2bSJakub Kicinski ALU_OP_OR, reg_b(insn->dst_reg * 2 + 1)); 1628d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 162982837370SJakub Kicinski return 0; 1630d9ae7f2bSJakub Kicinski } 1631d9ae7f2bSJakub Kicinski 1632d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 1633d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1634d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_XOR, tmp_reg); 1635d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1636d9ae7f2bSJakub Kicinski 1637d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 1638d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1639d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_XOR, tmp_reg); 1640d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1641d9ae7f2bSJakub Kicinski 1642d9ae7f2bSJakub Kicinski return 0; 1643d9ae7f2bSJakub Kicinski } 1644d9ae7f2bSJakub Kicinski 1645d9ae7f2bSJakub Kicinski static int jeq_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1646d9ae7f2bSJakub Kicinski { 1647d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1648d9ae7f2bSJakub Kicinski 1649d9ae7f2bSJakub Kicinski if (insn->off < 0) /* TODO */ 1650d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1651d9ae7f2bSJakub Kicinski 1652d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_a(nfp_prog), reg_a(insn->dst_reg * 2), 1653d9ae7f2bSJakub Kicinski ALU_OP_XOR, reg_b(insn->src_reg * 2)); 1654d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), reg_a(insn->dst_reg * 2 + 1), 1655d9ae7f2bSJakub Kicinski ALU_OP_XOR, reg_b(insn->src_reg * 2 + 1)); 1656d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1657d9ae7f2bSJakub Kicinski imm_a(nfp_prog), ALU_OP_OR, imm_b(nfp_prog)); 1658d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BEQ, insn->off, 0); 1659d9ae7f2bSJakub Kicinski 1660d9ae7f2bSJakub Kicinski return 0; 1661d9ae7f2bSJakub Kicinski } 1662d9ae7f2bSJakub Kicinski 1663d9ae7f2bSJakub Kicinski static int jgt_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1664d9ae7f2bSJakub Kicinski { 166526fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BLO, true); 1666d9ae7f2bSJakub Kicinski } 1667d9ae7f2bSJakub Kicinski 1668d9ae7f2bSJakub Kicinski static int jge_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1669d9ae7f2bSJakub Kicinski { 167026fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BHS, false); 1671d9ae7f2bSJakub Kicinski } 1672d9ae7f2bSJakub Kicinski 16735dd294d4SDaniel Borkmann static int jlt_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 16745dd294d4SDaniel Borkmann { 167526fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BLO, false); 16765dd294d4SDaniel Borkmann } 16775dd294d4SDaniel Borkmann 16785dd294d4SDaniel Borkmann static int jle_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 16795dd294d4SDaniel Borkmann { 168026fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BHS, true); 16815dd294d4SDaniel Borkmann } 16825dd294d4SDaniel Borkmann 1683d9ae7f2bSJakub Kicinski static int jset_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1684d9ae7f2bSJakub Kicinski { 1685d9ae7f2bSJakub Kicinski return wrp_test_reg(nfp_prog, meta, ALU_OP_AND, BR_BNE); 1686d9ae7f2bSJakub Kicinski } 1687d9ae7f2bSJakub Kicinski 1688d9ae7f2bSJakub Kicinski static int jne_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1689d9ae7f2bSJakub Kicinski { 1690d9ae7f2bSJakub Kicinski return wrp_test_reg(nfp_prog, meta, ALU_OP_XOR, BR_BNE); 1691d9ae7f2bSJakub Kicinski } 1692d9ae7f2bSJakub Kicinski 1693d9ae7f2bSJakub Kicinski static int goto_out(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1694d9ae7f2bSJakub Kicinski { 1695d9ae7f2bSJakub Kicinski wrp_br_special(nfp_prog, BR_UNC, OP_BR_GO_OUT); 1696d9ae7f2bSJakub Kicinski 1697d9ae7f2bSJakub Kicinski return 0; 1698d9ae7f2bSJakub Kicinski } 1699d9ae7f2bSJakub Kicinski 1700d9ae7f2bSJakub Kicinski static const instr_cb_t instr_cb[256] = { 1701d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_MOV | BPF_X] = mov_reg64, 1702d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_MOV | BPF_K] = mov_imm64, 1703d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_XOR | BPF_X] = xor_reg64, 1704d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_XOR | BPF_K] = xor_imm64, 1705d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_AND | BPF_X] = and_reg64, 1706d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_AND | BPF_K] = and_imm64, 1707d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_OR | BPF_X] = or_reg64, 1708d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_OR | BPF_K] = or_imm64, 1709d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_ADD | BPF_X] = add_reg64, 1710d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_ADD | BPF_K] = add_imm64, 1711d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_SUB | BPF_X] = sub_reg64, 1712d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_SUB | BPF_K] = sub_imm64, 1713d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_LSH | BPF_K] = shl_imm64, 1714d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_RSH | BPF_K] = shr_imm64, 1715d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_MOV | BPF_X] = mov_reg, 1716d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_MOV | BPF_K] = mov_imm, 1717d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_XOR | BPF_X] = xor_reg, 1718d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_XOR | BPF_K] = xor_imm, 1719d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_AND | BPF_X] = and_reg, 1720d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_AND | BPF_K] = and_imm, 1721d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_OR | BPF_X] = or_reg, 1722d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_OR | BPF_K] = or_imm, 1723d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_ADD | BPF_X] = add_reg, 1724d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_ADD | BPF_K] = add_imm, 1725d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_SUB | BPF_X] = sub_reg, 1726d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_SUB | BPF_K] = sub_imm, 1727d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_LSH | BPF_K] = shl_imm, 17283119d1fdSJakub Kicinski [BPF_ALU | BPF_END | BPF_X] = end_reg32, 1729d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IMM | BPF_DW] = imm_ld8, 1730d9ae7f2bSJakub Kicinski [BPF_LD | BPF_ABS | BPF_B] = data_ld1, 1731d9ae7f2bSJakub Kicinski [BPF_LD | BPF_ABS | BPF_H] = data_ld2, 1732d9ae7f2bSJakub Kicinski [BPF_LD | BPF_ABS | BPF_W] = data_ld4, 1733d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IND | BPF_B] = data_ind_ld1, 1734d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IND | BPF_H] = data_ind_ld2, 1735d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IND | BPF_W] = data_ind_ld4, 17362ca71441SJakub Kicinski [BPF_LDX | BPF_MEM | BPF_B] = mem_ldx1, 17372ca71441SJakub Kicinski [BPF_LDX | BPF_MEM | BPF_H] = mem_ldx2, 1738d9ae7f2bSJakub Kicinski [BPF_LDX | BPF_MEM | BPF_W] = mem_ldx4, 17392ca71441SJakub Kicinski [BPF_LDX | BPF_MEM | BPF_DW] = mem_ldx8, 1740e663fe38SJakub Kicinski [BPF_STX | BPF_MEM | BPF_B] = mem_stx1, 1741e663fe38SJakub Kicinski [BPF_STX | BPF_MEM | BPF_H] = mem_stx2, 1742d9ae7f2bSJakub Kicinski [BPF_STX | BPF_MEM | BPF_W] = mem_stx4, 1743e663fe38SJakub Kicinski [BPF_STX | BPF_MEM | BPF_DW] = mem_stx8, 1744e663fe38SJakub Kicinski [BPF_ST | BPF_MEM | BPF_B] = mem_st1, 1745e663fe38SJakub Kicinski [BPF_ST | BPF_MEM | BPF_H] = mem_st2, 1746e663fe38SJakub Kicinski [BPF_ST | BPF_MEM | BPF_W] = mem_st4, 1747e663fe38SJakub Kicinski [BPF_ST | BPF_MEM | BPF_DW] = mem_st8, 1748d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JA | BPF_K] = jump, 1749d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JEQ | BPF_K] = jeq_imm, 1750d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGT | BPF_K] = jgt_imm, 1751d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGE | BPF_K] = jge_imm, 17525dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLT | BPF_K] = jlt_imm, 17535dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLE | BPF_K] = jle_imm, 1754d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JSET | BPF_K] = jset_imm, 1755d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JNE | BPF_K] = jne_imm, 1756d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JEQ | BPF_X] = jeq_reg, 1757d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGT | BPF_X] = jgt_reg, 1758d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGE | BPF_X] = jge_reg, 17595dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLT | BPF_X] = jlt_reg, 17605dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLE | BPF_X] = jle_reg, 1761d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JSET | BPF_X] = jset_reg, 1762d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JNE | BPF_X] = jne_reg, 1763d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_EXIT] = goto_out, 1764d9ae7f2bSJakub Kicinski }; 1765d9ae7f2bSJakub Kicinski 1766d9ae7f2bSJakub Kicinski /* --- Misc code --- */ 1767d9ae7f2bSJakub Kicinski static void br_set_offset(u64 *instr, u16 offset) 1768d9ae7f2bSJakub Kicinski { 1769d9ae7f2bSJakub Kicinski u16 addr_lo, addr_hi; 1770d9ae7f2bSJakub Kicinski 1771d9ae7f2bSJakub Kicinski addr_lo = offset & (OP_BR_ADDR_LO >> __bf_shf(OP_BR_ADDR_LO)); 1772d9ae7f2bSJakub Kicinski addr_hi = offset != addr_lo; 1773d9ae7f2bSJakub Kicinski *instr &= ~(OP_BR_ADDR_HI | OP_BR_ADDR_LO); 1774d9ae7f2bSJakub Kicinski *instr |= FIELD_PREP(OP_BR_ADDR_HI, addr_hi); 1775d9ae7f2bSJakub Kicinski *instr |= FIELD_PREP(OP_BR_ADDR_LO, addr_lo); 1776d9ae7f2bSJakub Kicinski } 1777d9ae7f2bSJakub Kicinski 1778d9ae7f2bSJakub Kicinski /* --- Assembler logic --- */ 1779d9ae7f2bSJakub Kicinski static int nfp_fixup_branches(struct nfp_prog *nfp_prog) 1780d9ae7f2bSJakub Kicinski { 1781d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta, *next; 1782d9ae7f2bSJakub Kicinski u32 off, br_idx; 1783d9ae7f2bSJakub Kicinski u32 idx; 1784d9ae7f2bSJakub Kicinski 1785d9ae7f2bSJakub Kicinski nfp_for_each_insn_walk2(nfp_prog, meta, next) { 1786d9ae7f2bSJakub Kicinski if (meta->skip) 1787d9ae7f2bSJakub Kicinski continue; 1788d9ae7f2bSJakub Kicinski if (BPF_CLASS(meta->insn.code) != BPF_JMP) 1789d9ae7f2bSJakub Kicinski continue; 1790d9ae7f2bSJakub Kicinski 1791d9ae7f2bSJakub Kicinski br_idx = nfp_prog_offset_to_index(nfp_prog, next->off) - 1; 1792d9ae7f2bSJakub Kicinski if (!nfp_is_br(nfp_prog->prog[br_idx])) { 1793d9ae7f2bSJakub Kicinski pr_err("Fixup found block not ending in branch %d %02x %016llx!!\n", 1794d9ae7f2bSJakub Kicinski br_idx, meta->insn.code, nfp_prog->prog[br_idx]); 1795d9ae7f2bSJakub Kicinski return -ELOOP; 1796d9ae7f2bSJakub Kicinski } 1797d9ae7f2bSJakub Kicinski /* Leave special branches for later */ 1798d9ae7f2bSJakub Kicinski if (FIELD_GET(OP_BR_SPECIAL, nfp_prog->prog[br_idx])) 1799d9ae7f2bSJakub Kicinski continue; 1800d9ae7f2bSJakub Kicinski 1801d9ae7f2bSJakub Kicinski /* Find the target offset in assembler realm */ 1802d9ae7f2bSJakub Kicinski off = meta->insn.off; 1803d9ae7f2bSJakub Kicinski if (!off) { 1804d9ae7f2bSJakub Kicinski pr_err("Fixup found zero offset!!\n"); 1805d9ae7f2bSJakub Kicinski return -ELOOP; 1806d9ae7f2bSJakub Kicinski } 1807d9ae7f2bSJakub Kicinski 1808d9ae7f2bSJakub Kicinski while (off && nfp_meta_has_next(nfp_prog, next)) { 1809d9ae7f2bSJakub Kicinski next = nfp_meta_next(next); 1810d9ae7f2bSJakub Kicinski off--; 1811d9ae7f2bSJakub Kicinski } 1812d9ae7f2bSJakub Kicinski if (off) { 1813d9ae7f2bSJakub Kicinski pr_err("Fixup found too large jump!! %d\n", off); 1814d9ae7f2bSJakub Kicinski return -ELOOP; 1815d9ae7f2bSJakub Kicinski } 1816d9ae7f2bSJakub Kicinski 1817d9ae7f2bSJakub Kicinski if (next->skip) { 1818d9ae7f2bSJakub Kicinski pr_err("Branch landing on removed instruction!!\n"); 1819d9ae7f2bSJakub Kicinski return -ELOOP; 1820d9ae7f2bSJakub Kicinski } 1821d9ae7f2bSJakub Kicinski 1822d9ae7f2bSJakub Kicinski for (idx = nfp_prog_offset_to_index(nfp_prog, meta->off); 1823d9ae7f2bSJakub Kicinski idx <= br_idx; idx++) { 1824d9ae7f2bSJakub Kicinski if (!nfp_is_br(nfp_prog->prog[idx])) 1825d9ae7f2bSJakub Kicinski continue; 1826d9ae7f2bSJakub Kicinski br_set_offset(&nfp_prog->prog[idx], next->off); 1827d9ae7f2bSJakub Kicinski } 1828d9ae7f2bSJakub Kicinski } 1829d9ae7f2bSJakub Kicinski 1830d9ae7f2bSJakub Kicinski /* Fixup 'goto out's separately, they can be scattered around */ 1831d9ae7f2bSJakub Kicinski for (br_idx = 0; br_idx < nfp_prog->prog_len; br_idx++) { 1832d9ae7f2bSJakub Kicinski enum br_special special; 1833d9ae7f2bSJakub Kicinski 1834d9ae7f2bSJakub Kicinski if ((nfp_prog->prog[br_idx] & OP_BR_BASE_MASK) != OP_BR_BASE) 1835d9ae7f2bSJakub Kicinski continue; 1836d9ae7f2bSJakub Kicinski 1837d9ae7f2bSJakub Kicinski special = FIELD_GET(OP_BR_SPECIAL, nfp_prog->prog[br_idx]); 1838d9ae7f2bSJakub Kicinski switch (special) { 1839d9ae7f2bSJakub Kicinski case OP_BR_NORMAL: 1840d9ae7f2bSJakub Kicinski break; 1841d9ae7f2bSJakub Kicinski case OP_BR_GO_OUT: 1842d9ae7f2bSJakub Kicinski br_set_offset(&nfp_prog->prog[br_idx], 1843d9ae7f2bSJakub Kicinski nfp_prog->tgt_out); 1844d9ae7f2bSJakub Kicinski break; 1845d9ae7f2bSJakub Kicinski case OP_BR_GO_ABORT: 1846d9ae7f2bSJakub Kicinski br_set_offset(&nfp_prog->prog[br_idx], 1847d9ae7f2bSJakub Kicinski nfp_prog->tgt_abort); 1848d9ae7f2bSJakub Kicinski break; 1849d9ae7f2bSJakub Kicinski } 1850d9ae7f2bSJakub Kicinski 1851d9ae7f2bSJakub Kicinski nfp_prog->prog[br_idx] &= ~OP_BR_SPECIAL; 1852d9ae7f2bSJakub Kicinski } 1853d9ae7f2bSJakub Kicinski 1854d9ae7f2bSJakub Kicinski return 0; 1855d9ae7f2bSJakub Kicinski } 1856d9ae7f2bSJakub Kicinski 1857d9ae7f2bSJakub Kicinski static void nfp_intro(struct nfp_prog *nfp_prog) 1858d9ae7f2bSJakub Kicinski { 185918e53b6cSJakub Kicinski wrp_immed(nfp_prog, plen_reg(nfp_prog), GENMASK(13, 0)); 186018e53b6cSJakub Kicinski emit_alu(nfp_prog, plen_reg(nfp_prog), 186118e53b6cSJakub Kicinski plen_reg(nfp_prog), ALU_OP_AND, pv_len(nfp_prog)); 1862d9ae7f2bSJakub Kicinski } 1863d9ae7f2bSJakub Kicinski 1864d9ae7f2bSJakub Kicinski static void nfp_outro_tc_legacy(struct nfp_prog *nfp_prog) 1865d9ae7f2bSJakub Kicinski { 1866d9ae7f2bSJakub Kicinski const u8 act2code[] = { 1867d9ae7f2bSJakub Kicinski [NN_ACT_TC_DROP] = 0x22, 1868d9ae7f2bSJakub Kicinski [NN_ACT_TC_REDIR] = 0x24 1869d9ae7f2bSJakub Kicinski }; 1870d9ae7f2bSJakub Kicinski /* Target for aborts */ 1871d9ae7f2bSJakub Kicinski nfp_prog->tgt_abort = nfp_prog_current_offset(nfp_prog); 1872d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(0), 0); 1873d9ae7f2bSJakub Kicinski 1874d9ae7f2bSJakub Kicinski /* Target for normal exits */ 1875d9ae7f2bSJakub Kicinski nfp_prog->tgt_out = nfp_prog_current_offset(nfp_prog); 1876d9ae7f2bSJakub Kicinski /* Legacy TC mode: 1877d9ae7f2bSJakub Kicinski * 0 0x11 -> pass, count as stat0 1878d9ae7f2bSJakub Kicinski * -1 drop 0x22 -> drop, count as stat1 1879d9ae7f2bSJakub Kicinski * redir 0x24 -> redir, count as stat1 1880d9ae7f2bSJakub Kicinski * ife mark 0x21 -> pass, count as stat1 1881d9ae7f2bSJakub Kicinski * ife + tx 0x24 -> redir, count as stat1 1882d9ae7f2bSJakub Kicinski */ 1883d9ae7f2bSJakub Kicinski emit_br_byte_neq(nfp_prog, reg_b(0), 0xff, 0, nfp_prog->tgt_done, 2); 1884c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 1885d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_imm(0x11), SHF_SC_L_SHF, 16); 1886d9ae7f2bSJakub Kicinski 1887d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_UNC, nfp_prog->tgt_done, 1); 1888d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_imm(act2code[nfp_prog->act]), 1889d9ae7f2bSJakub Kicinski SHF_SC_L_SHF, 16); 1890d9ae7f2bSJakub Kicinski } 1891d9ae7f2bSJakub Kicinski 1892d9ae7f2bSJakub Kicinski static void nfp_outro_tc_da(struct nfp_prog *nfp_prog) 1893d9ae7f2bSJakub Kicinski { 1894d9ae7f2bSJakub Kicinski /* TC direct-action mode: 1895d9ae7f2bSJakub Kicinski * 0,1 ok NOT SUPPORTED[1] 1896d9ae7f2bSJakub Kicinski * 2 drop 0x22 -> drop, count as stat1 1897d9ae7f2bSJakub Kicinski * 4,5 nuke 0x02 -> drop 1898d9ae7f2bSJakub Kicinski * 7 redir 0x44 -> redir, count as stat2 1899d9ae7f2bSJakub Kicinski * * unspec 0x11 -> pass, count as stat0 1900d9ae7f2bSJakub Kicinski * 1901d9ae7f2bSJakub Kicinski * [1] We can't support OK and RECLASSIFY because we can't tell TC 1902d9ae7f2bSJakub Kicinski * the exact decision made. We are forced to support UNSPEC 1903d9ae7f2bSJakub Kicinski * to handle aborts so that's the only one we handle for passing 1904d9ae7f2bSJakub Kicinski * packets up the stack. 1905d9ae7f2bSJakub Kicinski */ 1906d9ae7f2bSJakub Kicinski /* Target for aborts */ 1907d9ae7f2bSJakub Kicinski nfp_prog->tgt_abort = nfp_prog_current_offset(nfp_prog); 1908d9ae7f2bSJakub Kicinski 1909d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 1910d9ae7f2bSJakub Kicinski 1911c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 1912d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_imm(0x11), SHF_SC_L_SHF, 16); 1913d9ae7f2bSJakub Kicinski 1914d9ae7f2bSJakub Kicinski /* Target for normal exits */ 1915d9ae7f2bSJakub Kicinski nfp_prog->tgt_out = nfp_prog_current_offset(nfp_prog); 1916d9ae7f2bSJakub Kicinski 1917d9ae7f2bSJakub Kicinski /* if R0 > 7 jump to abort */ 1918d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_imm(7), ALU_OP_SUB, reg_b(0)); 1919d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BLO, nfp_prog->tgt_abort, 0); 1920c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 1921d9ae7f2bSJakub Kicinski 1922d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_b(2), 0x41221211); 1923d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_b(3), 0x41001211); 1924d9ae7f2bSJakub Kicinski 1925d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_a(1), 1926d9ae7f2bSJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(0), SHF_SC_L_SHF, 2); 1927d9ae7f2bSJakub Kicinski 1928d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(1), ALU_OP_OR, reg_imm(0)); 1929d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_a(2), 1930d9ae7f2bSJakub Kicinski reg_imm(0xf), SHF_OP_AND, reg_b(2), SHF_SC_R_SHF, 0); 1931d9ae7f2bSJakub Kicinski 1932d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(1), ALU_OP_OR, reg_imm(0)); 1933d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_b(2), 1934d9ae7f2bSJakub Kicinski reg_imm(0xf), SHF_OP_AND, reg_b(3), SHF_SC_R_SHF, 0); 1935d9ae7f2bSJakub Kicinski 1936d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 1937d9ae7f2bSJakub Kicinski 1938d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_b(2), 1939d9ae7f2bSJakub Kicinski reg_a(2), SHF_OP_OR, reg_b(2), SHF_SC_L_SHF, 4); 1940d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_b(2), SHF_SC_L_SHF, 16); 1941d9ae7f2bSJakub Kicinski } 1942d9ae7f2bSJakub Kicinski 1943d9ae7f2bSJakub Kicinski static void nfp_outro_xdp(struct nfp_prog *nfp_prog) 1944d9ae7f2bSJakub Kicinski { 1945d9ae7f2bSJakub Kicinski /* XDP return codes: 1946d9ae7f2bSJakub Kicinski * 0 aborted 0x82 -> drop, count as stat3 1947d9ae7f2bSJakub Kicinski * 1 drop 0x22 -> drop, count as stat1 1948d9ae7f2bSJakub Kicinski * 2 pass 0x11 -> pass, count as stat0 1949d9ae7f2bSJakub Kicinski * 3 tx 0x44 -> redir, count as stat2 1950d9ae7f2bSJakub Kicinski * * unknown 0x82 -> drop, count as stat3 1951d9ae7f2bSJakub Kicinski */ 1952d9ae7f2bSJakub Kicinski /* Target for aborts */ 1953d9ae7f2bSJakub Kicinski nfp_prog->tgt_abort = nfp_prog_current_offset(nfp_prog); 1954d9ae7f2bSJakub Kicinski 1955d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 1956d9ae7f2bSJakub Kicinski 1957c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 1958d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_imm(0x82), SHF_SC_L_SHF, 16); 1959d9ae7f2bSJakub Kicinski 1960d9ae7f2bSJakub Kicinski /* Target for normal exits */ 1961d9ae7f2bSJakub Kicinski nfp_prog->tgt_out = nfp_prog_current_offset(nfp_prog); 1962d9ae7f2bSJakub Kicinski 1963d9ae7f2bSJakub Kicinski /* if R0 > 3 jump to abort */ 1964d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_imm(3), ALU_OP_SUB, reg_b(0)); 1965d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BLO, nfp_prog->tgt_abort, 0); 1966d9ae7f2bSJakub Kicinski 1967d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_b(2), 0x44112282); 1968d9ae7f2bSJakub Kicinski 1969d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_a(1), 1970d9ae7f2bSJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(0), SHF_SC_L_SHF, 3); 1971d9ae7f2bSJakub Kicinski 1972d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(1), ALU_OP_OR, reg_imm(0)); 1973d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_b(2), 1974d9ae7f2bSJakub Kicinski reg_imm(0xff), SHF_OP_AND, reg_b(2), SHF_SC_R_SHF, 0); 1975d9ae7f2bSJakub Kicinski 1976d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 1977d9ae7f2bSJakub Kicinski 1978c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 1979d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_b(2), SHF_SC_L_SHF, 16); 1980d9ae7f2bSJakub Kicinski } 1981d9ae7f2bSJakub Kicinski 1982d9ae7f2bSJakub Kicinski static void nfp_outro(struct nfp_prog *nfp_prog) 1983d9ae7f2bSJakub Kicinski { 1984d9ae7f2bSJakub Kicinski switch (nfp_prog->act) { 1985d9ae7f2bSJakub Kicinski case NN_ACT_DIRECT: 1986d9ae7f2bSJakub Kicinski nfp_outro_tc_da(nfp_prog); 1987d9ae7f2bSJakub Kicinski break; 1988d9ae7f2bSJakub Kicinski case NN_ACT_TC_DROP: 1989d9ae7f2bSJakub Kicinski case NN_ACT_TC_REDIR: 1990d9ae7f2bSJakub Kicinski nfp_outro_tc_legacy(nfp_prog); 1991d9ae7f2bSJakub Kicinski break; 1992d9ae7f2bSJakub Kicinski case NN_ACT_XDP: 1993d9ae7f2bSJakub Kicinski nfp_outro_xdp(nfp_prog); 1994d9ae7f2bSJakub Kicinski break; 1995d9ae7f2bSJakub Kicinski } 1996d9ae7f2bSJakub Kicinski } 1997d9ae7f2bSJakub Kicinski 1998d9ae7f2bSJakub Kicinski static int nfp_translate(struct nfp_prog *nfp_prog) 1999d9ae7f2bSJakub Kicinski { 2000d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta; 2001ff42bb9fSJakub Kicinski int err; 2002d9ae7f2bSJakub Kicinski 2003d9ae7f2bSJakub Kicinski nfp_intro(nfp_prog); 2004d9ae7f2bSJakub Kicinski if (nfp_prog->error) 2005d9ae7f2bSJakub Kicinski return nfp_prog->error; 2006d9ae7f2bSJakub Kicinski 2007d9ae7f2bSJakub Kicinski list_for_each_entry(meta, &nfp_prog->insns, l) { 2008d9ae7f2bSJakub Kicinski instr_cb_t cb = instr_cb[meta->insn.code]; 2009d9ae7f2bSJakub Kicinski 2010d9ae7f2bSJakub Kicinski meta->off = nfp_prog_current_offset(nfp_prog); 2011d9ae7f2bSJakub Kicinski 2012d9ae7f2bSJakub Kicinski if (meta->skip) { 2013d9ae7f2bSJakub Kicinski nfp_prog->n_translated++; 2014d9ae7f2bSJakub Kicinski continue; 2015d9ae7f2bSJakub Kicinski } 2016d9ae7f2bSJakub Kicinski 2017d9ae7f2bSJakub Kicinski if (nfp_meta_has_prev(nfp_prog, meta) && 2018d9ae7f2bSJakub Kicinski nfp_meta_prev(meta)->double_cb) 2019d9ae7f2bSJakub Kicinski cb = nfp_meta_prev(meta)->double_cb; 2020d9ae7f2bSJakub Kicinski if (!cb) 2021d9ae7f2bSJakub Kicinski return -ENOENT; 2022d9ae7f2bSJakub Kicinski err = cb(nfp_prog, meta); 2023d9ae7f2bSJakub Kicinski if (err) 2024d9ae7f2bSJakub Kicinski return err; 2025d9ae7f2bSJakub Kicinski 2026d9ae7f2bSJakub Kicinski nfp_prog->n_translated++; 2027d9ae7f2bSJakub Kicinski } 2028d9ae7f2bSJakub Kicinski 2029d9ae7f2bSJakub Kicinski nfp_outro(nfp_prog); 2030d9ae7f2bSJakub Kicinski if (nfp_prog->error) 2031d9ae7f2bSJakub Kicinski return nfp_prog->error; 2032d9ae7f2bSJakub Kicinski 2033ff42bb9fSJakub Kicinski wrp_nops(nfp_prog, NFP_USTORE_PREFETCH_WINDOW); 20341c03e03fSJakub Kicinski if (nfp_prog->error) 20351c03e03fSJakub Kicinski return nfp_prog->error; 20361c03e03fSJakub Kicinski 2037d9ae7f2bSJakub Kicinski return nfp_fixup_branches(nfp_prog); 2038d9ae7f2bSJakub Kicinski } 2039d9ae7f2bSJakub Kicinski 2040d9ae7f2bSJakub Kicinski static int 2041d9ae7f2bSJakub Kicinski nfp_prog_prepare(struct nfp_prog *nfp_prog, const struct bpf_insn *prog, 2042d9ae7f2bSJakub Kicinski unsigned int cnt) 2043d9ae7f2bSJakub Kicinski { 2044d9ae7f2bSJakub Kicinski unsigned int i; 2045d9ae7f2bSJakub Kicinski 2046d9ae7f2bSJakub Kicinski for (i = 0; i < cnt; i++) { 2047d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta; 2048d9ae7f2bSJakub Kicinski 2049d9ae7f2bSJakub Kicinski meta = kzalloc(sizeof(*meta), GFP_KERNEL); 2050d9ae7f2bSJakub Kicinski if (!meta) 2051d9ae7f2bSJakub Kicinski return -ENOMEM; 2052d9ae7f2bSJakub Kicinski 2053d9ae7f2bSJakub Kicinski meta->insn = prog[i]; 2054d9ae7f2bSJakub Kicinski meta->n = i; 2055d9ae7f2bSJakub Kicinski 2056d9ae7f2bSJakub Kicinski list_add_tail(&meta->l, &nfp_prog->insns); 2057d9ae7f2bSJakub Kicinski } 2058d9ae7f2bSJakub Kicinski 2059d9ae7f2bSJakub Kicinski return 0; 2060d9ae7f2bSJakub Kicinski } 2061d9ae7f2bSJakub Kicinski 2062d9ae7f2bSJakub Kicinski /* --- Optimizations --- */ 2063d9ae7f2bSJakub Kicinski static void nfp_bpf_opt_reg_init(struct nfp_prog *nfp_prog) 2064d9ae7f2bSJakub Kicinski { 2065d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta; 2066d9ae7f2bSJakub Kicinski 2067d9ae7f2bSJakub Kicinski list_for_each_entry(meta, &nfp_prog->insns, l) { 2068d9ae7f2bSJakub Kicinski struct bpf_insn insn = meta->insn; 2069d9ae7f2bSJakub Kicinski 2070d9ae7f2bSJakub Kicinski /* Programs converted from cBPF start with register xoring */ 2071d9ae7f2bSJakub Kicinski if (insn.code == (BPF_ALU64 | BPF_XOR | BPF_X) && 2072d9ae7f2bSJakub Kicinski insn.src_reg == insn.dst_reg) 2073d9ae7f2bSJakub Kicinski continue; 2074d9ae7f2bSJakub Kicinski 2075d9ae7f2bSJakub Kicinski /* Programs start with R6 = R1 but we ignore the skb pointer */ 2076d9ae7f2bSJakub Kicinski if (insn.code == (BPF_ALU64 | BPF_MOV | BPF_X) && 2077d9ae7f2bSJakub Kicinski insn.src_reg == 1 && insn.dst_reg == 6) 2078d9ae7f2bSJakub Kicinski meta->skip = true; 2079d9ae7f2bSJakub Kicinski 2080d9ae7f2bSJakub Kicinski /* Return as soon as something doesn't match */ 2081d9ae7f2bSJakub Kicinski if (!meta->skip) 2082d9ae7f2bSJakub Kicinski return; 2083d9ae7f2bSJakub Kicinski } 2084d9ae7f2bSJakub Kicinski } 2085d9ae7f2bSJakub Kicinski 2086d9ae7f2bSJakub Kicinski /* Remove masking after load since our load guarantees this is not needed */ 2087d9ae7f2bSJakub Kicinski static void nfp_bpf_opt_ld_mask(struct nfp_prog *nfp_prog) 2088d9ae7f2bSJakub Kicinski { 2089d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta1, *meta2; 2090d9ae7f2bSJakub Kicinski const s32 exp_mask[] = { 2091d9ae7f2bSJakub Kicinski [BPF_B] = 0x000000ffU, 2092d9ae7f2bSJakub Kicinski [BPF_H] = 0x0000ffffU, 2093d9ae7f2bSJakub Kicinski [BPF_W] = 0xffffffffU, 2094d9ae7f2bSJakub Kicinski }; 2095d9ae7f2bSJakub Kicinski 2096d9ae7f2bSJakub Kicinski nfp_for_each_insn_walk2(nfp_prog, meta1, meta2) { 2097d9ae7f2bSJakub Kicinski struct bpf_insn insn, next; 2098d9ae7f2bSJakub Kicinski 2099d9ae7f2bSJakub Kicinski insn = meta1->insn; 2100d9ae7f2bSJakub Kicinski next = meta2->insn; 2101d9ae7f2bSJakub Kicinski 2102d9ae7f2bSJakub Kicinski if (BPF_CLASS(insn.code) != BPF_LD) 2103d9ae7f2bSJakub Kicinski continue; 2104d9ae7f2bSJakub Kicinski if (BPF_MODE(insn.code) != BPF_ABS && 2105d9ae7f2bSJakub Kicinski BPF_MODE(insn.code) != BPF_IND) 2106d9ae7f2bSJakub Kicinski continue; 2107d9ae7f2bSJakub Kicinski 2108d9ae7f2bSJakub Kicinski if (next.code != (BPF_ALU64 | BPF_AND | BPF_K)) 2109d9ae7f2bSJakub Kicinski continue; 2110d9ae7f2bSJakub Kicinski 2111d9ae7f2bSJakub Kicinski if (!exp_mask[BPF_SIZE(insn.code)]) 2112d9ae7f2bSJakub Kicinski continue; 2113d9ae7f2bSJakub Kicinski if (exp_mask[BPF_SIZE(insn.code)] != next.imm) 2114d9ae7f2bSJakub Kicinski continue; 2115d9ae7f2bSJakub Kicinski 2116d9ae7f2bSJakub Kicinski if (next.src_reg || next.dst_reg) 2117d9ae7f2bSJakub Kicinski continue; 2118d9ae7f2bSJakub Kicinski 2119d9ae7f2bSJakub Kicinski meta2->skip = true; 2120d9ae7f2bSJakub Kicinski } 2121d9ae7f2bSJakub Kicinski } 2122d9ae7f2bSJakub Kicinski 2123d9ae7f2bSJakub Kicinski static void nfp_bpf_opt_ld_shift(struct nfp_prog *nfp_prog) 2124d9ae7f2bSJakub Kicinski { 2125d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta1, *meta2, *meta3; 2126d9ae7f2bSJakub Kicinski 2127d9ae7f2bSJakub Kicinski nfp_for_each_insn_walk3(nfp_prog, meta1, meta2, meta3) { 2128d9ae7f2bSJakub Kicinski struct bpf_insn insn, next1, next2; 2129d9ae7f2bSJakub Kicinski 2130d9ae7f2bSJakub Kicinski insn = meta1->insn; 2131d9ae7f2bSJakub Kicinski next1 = meta2->insn; 2132d9ae7f2bSJakub Kicinski next2 = meta3->insn; 2133d9ae7f2bSJakub Kicinski 2134d9ae7f2bSJakub Kicinski if (BPF_CLASS(insn.code) != BPF_LD) 2135d9ae7f2bSJakub Kicinski continue; 2136d9ae7f2bSJakub Kicinski if (BPF_MODE(insn.code) != BPF_ABS && 2137d9ae7f2bSJakub Kicinski BPF_MODE(insn.code) != BPF_IND) 2138d9ae7f2bSJakub Kicinski continue; 2139d9ae7f2bSJakub Kicinski if (BPF_SIZE(insn.code) != BPF_W) 2140d9ae7f2bSJakub Kicinski continue; 2141d9ae7f2bSJakub Kicinski 2142d9ae7f2bSJakub Kicinski if (!(next1.code == (BPF_LSH | BPF_K | BPF_ALU64) && 2143d9ae7f2bSJakub Kicinski next2.code == (BPF_RSH | BPF_K | BPF_ALU64)) && 2144d9ae7f2bSJakub Kicinski !(next1.code == (BPF_RSH | BPF_K | BPF_ALU64) && 2145d9ae7f2bSJakub Kicinski next2.code == (BPF_LSH | BPF_K | BPF_ALU64))) 2146d9ae7f2bSJakub Kicinski continue; 2147d9ae7f2bSJakub Kicinski 2148d9ae7f2bSJakub Kicinski if (next1.src_reg || next1.dst_reg || 2149d9ae7f2bSJakub Kicinski next2.src_reg || next2.dst_reg) 2150d9ae7f2bSJakub Kicinski continue; 2151d9ae7f2bSJakub Kicinski 2152d9ae7f2bSJakub Kicinski if (next1.imm != 0x20 || next2.imm != 0x20) 2153d9ae7f2bSJakub Kicinski continue; 2154d9ae7f2bSJakub Kicinski 2155d9ae7f2bSJakub Kicinski meta2->skip = true; 2156d9ae7f2bSJakub Kicinski meta3->skip = true; 2157d9ae7f2bSJakub Kicinski } 2158d9ae7f2bSJakub Kicinski } 2159d9ae7f2bSJakub Kicinski 2160d9ae7f2bSJakub Kicinski static int nfp_bpf_optimize(struct nfp_prog *nfp_prog) 2161d9ae7f2bSJakub Kicinski { 2162d9ae7f2bSJakub Kicinski nfp_bpf_opt_reg_init(nfp_prog); 2163d9ae7f2bSJakub Kicinski 2164d9ae7f2bSJakub Kicinski nfp_bpf_opt_ld_mask(nfp_prog); 2165d9ae7f2bSJakub Kicinski nfp_bpf_opt_ld_shift(nfp_prog); 2166d9ae7f2bSJakub Kicinski 2167d9ae7f2bSJakub Kicinski return 0; 2168d9ae7f2bSJakub Kicinski } 2169d9ae7f2bSJakub Kicinski 21702e85d388SJakub Kicinski static int nfp_bpf_ustore_calc(struct nfp_prog *nfp_prog, __le64 *ustore) 2171fd068ddcSJakub Kicinski { 2172fd068ddcSJakub Kicinski int i; 2173fd068ddcSJakub Kicinski 2174fd068ddcSJakub Kicinski for (i = 0; i < nfp_prog->prog_len; i++) { 2175fd068ddcSJakub Kicinski int err; 2176fd068ddcSJakub Kicinski 2177fd068ddcSJakub Kicinski err = nfp_ustore_check_valid_no_ecc(nfp_prog->prog[i]); 2178fd068ddcSJakub Kicinski if (err) 2179fd068ddcSJakub Kicinski return err; 2180fd068ddcSJakub Kicinski 2181fd068ddcSJakub Kicinski nfp_prog->prog[i] = nfp_ustore_calc_ecc_insn(nfp_prog->prog[i]); 21822e85d388SJakub Kicinski 21832e85d388SJakub Kicinski ustore[i] = cpu_to_le64(nfp_prog->prog[i]); 2184fd068ddcSJakub Kicinski } 2185fd068ddcSJakub Kicinski 2186fd068ddcSJakub Kicinski return 0; 2187fd068ddcSJakub Kicinski } 2188fd068ddcSJakub Kicinski 2189d9ae7f2bSJakub Kicinski /** 2190d9ae7f2bSJakub Kicinski * nfp_bpf_jit() - translate BPF code into NFP assembly 2191d9ae7f2bSJakub Kicinski * @filter: kernel BPF filter struct 2192d9ae7f2bSJakub Kicinski * @prog_mem: memory to store assembler instructions 2193d9ae7f2bSJakub Kicinski * @act: action attached to this eBPF program 2194d9ae7f2bSJakub Kicinski * @prog_start: offset of the first instruction when loaded 2195d9ae7f2bSJakub Kicinski * @prog_done: where to jump on exit 2196d9ae7f2bSJakub Kicinski * @prog_sz: size of @prog_mem in instructions 2197d9ae7f2bSJakub Kicinski * @res: achieved parameters of translation results 2198d9ae7f2bSJakub Kicinski */ 2199d9ae7f2bSJakub Kicinski int 2200d9ae7f2bSJakub Kicinski nfp_bpf_jit(struct bpf_prog *filter, void *prog_mem, 2201d9ae7f2bSJakub Kicinski enum nfp_bpf_action_type act, 2202d9ae7f2bSJakub Kicinski unsigned int prog_start, unsigned int prog_done, 2203d9ae7f2bSJakub Kicinski unsigned int prog_sz, struct nfp_bpf_result *res) 2204d9ae7f2bSJakub Kicinski { 2205d9ae7f2bSJakub Kicinski struct nfp_prog *nfp_prog; 2206d9ae7f2bSJakub Kicinski int ret; 2207d9ae7f2bSJakub Kicinski 2208d9ae7f2bSJakub Kicinski nfp_prog = kzalloc(sizeof(*nfp_prog), GFP_KERNEL); 2209d9ae7f2bSJakub Kicinski if (!nfp_prog) 2210d9ae7f2bSJakub Kicinski return -ENOMEM; 2211d9ae7f2bSJakub Kicinski 2212d9ae7f2bSJakub Kicinski INIT_LIST_HEAD(&nfp_prog->insns); 2213d9ae7f2bSJakub Kicinski nfp_prog->act = act; 2214d9ae7f2bSJakub Kicinski nfp_prog->start_off = prog_start; 2215d9ae7f2bSJakub Kicinski nfp_prog->tgt_done = prog_done; 2216d9ae7f2bSJakub Kicinski 2217d9ae7f2bSJakub Kicinski ret = nfp_prog_prepare(nfp_prog, filter->insnsi, filter->len); 2218d9ae7f2bSJakub Kicinski if (ret) 2219d9ae7f2bSJakub Kicinski goto out; 2220d9ae7f2bSJakub Kicinski 2221d9ae7f2bSJakub Kicinski ret = nfp_prog_verify(nfp_prog, filter); 2222d9ae7f2bSJakub Kicinski if (ret) 2223d9ae7f2bSJakub Kicinski goto out; 2224d9ae7f2bSJakub Kicinski 2225d9ae7f2bSJakub Kicinski ret = nfp_bpf_optimize(nfp_prog); 2226d9ae7f2bSJakub Kicinski if (ret) 2227d9ae7f2bSJakub Kicinski goto out; 2228d9ae7f2bSJakub Kicinski 2229226e0e94SJakub Kicinski nfp_prog->num_regs = MAX_BPF_REG; 2230d9ae7f2bSJakub Kicinski nfp_prog->regs_per_thread = 32; 2231d9ae7f2bSJakub Kicinski 2232d9ae7f2bSJakub Kicinski nfp_prog->prog = prog_mem; 2233d9ae7f2bSJakub Kicinski nfp_prog->__prog_alloc_len = prog_sz; 2234d9ae7f2bSJakub Kicinski 2235d9ae7f2bSJakub Kicinski ret = nfp_translate(nfp_prog); 2236d9ae7f2bSJakub Kicinski if (ret) { 2237d9ae7f2bSJakub Kicinski pr_err("Translation failed with error %d (translated: %u)\n", 2238d9ae7f2bSJakub Kicinski ret, nfp_prog->n_translated); 2239d9ae7f2bSJakub Kicinski ret = -EINVAL; 2240fd068ddcSJakub Kicinski goto out; 2241d9ae7f2bSJakub Kicinski } 2242d9ae7f2bSJakub Kicinski 22432e85d388SJakub Kicinski ret = nfp_bpf_ustore_calc(nfp_prog, (__force __le64 *)prog_mem); 2244fd068ddcSJakub Kicinski 2245d9ae7f2bSJakub Kicinski res->n_instr = nfp_prog->prog_len; 2246226e0e94SJakub Kicinski res->dense_mode = false; 2247d9ae7f2bSJakub Kicinski out: 2248d9ae7f2bSJakub Kicinski nfp_prog_free(nfp_prog); 2249d9ae7f2bSJakub Kicinski 2250d9ae7f2bSJakub Kicinski return ret; 2251d9ae7f2bSJakub Kicinski } 2252