1d9ae7f2bSJakub Kicinski /* 2854dc87dSJiong Wang * Copyright (C) 2016-2017 Netronome Systems, Inc. 3d9ae7f2bSJakub Kicinski * 4d9ae7f2bSJakub Kicinski * This software is dual licensed under the GNU General License Version 2, 5d9ae7f2bSJakub Kicinski * June 1991 as shown in the file COPYING in the top-level directory of this 6d9ae7f2bSJakub Kicinski * source tree or the BSD 2-Clause License provided below. You have the 7d9ae7f2bSJakub Kicinski * option to license this software under the complete terms of either license. 8d9ae7f2bSJakub Kicinski * 9d9ae7f2bSJakub Kicinski * The BSD 2-Clause License: 10d9ae7f2bSJakub Kicinski * 11d9ae7f2bSJakub Kicinski * Redistribution and use in source and binary forms, with or 12d9ae7f2bSJakub Kicinski * without modification, are permitted provided that the following 13d9ae7f2bSJakub Kicinski * conditions are met: 14d9ae7f2bSJakub Kicinski * 15d9ae7f2bSJakub Kicinski * 1. Redistributions of source code must retain the above 16d9ae7f2bSJakub Kicinski * copyright notice, this list of conditions and the following 17d9ae7f2bSJakub Kicinski * disclaimer. 18d9ae7f2bSJakub Kicinski * 19d9ae7f2bSJakub Kicinski * 2. Redistributions in binary form must reproduce the above 20d9ae7f2bSJakub Kicinski * copyright notice, this list of conditions and the following 21d9ae7f2bSJakub Kicinski * disclaimer in the documentation and/or other materials 22d9ae7f2bSJakub Kicinski * provided with the distribution. 23d9ae7f2bSJakub Kicinski * 24d9ae7f2bSJakub Kicinski * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 25d9ae7f2bSJakub Kicinski * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 26d9ae7f2bSJakub Kicinski * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 27d9ae7f2bSJakub Kicinski * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 28d9ae7f2bSJakub Kicinski * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 29d9ae7f2bSJakub Kicinski * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 30d9ae7f2bSJakub Kicinski * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 31d9ae7f2bSJakub Kicinski * SOFTWARE. 32d9ae7f2bSJakub Kicinski */ 33d9ae7f2bSJakub Kicinski 34d9ae7f2bSJakub Kicinski #define pr_fmt(fmt) "NFP net bpf: " fmt 35d9ae7f2bSJakub Kicinski 36d9ae7f2bSJakub Kicinski #include <linux/kernel.h> 37d9ae7f2bSJakub Kicinski #include <linux/bpf.h> 38d9ae7f2bSJakub Kicinski #include <linux/filter.h> 39d9ae7f2bSJakub Kicinski #include <linux/pkt_cls.h> 40d9ae7f2bSJakub Kicinski #include <linux/unistd.h> 41d9ae7f2bSJakub Kicinski 42d9ae7f2bSJakub Kicinski #include "main.h" 43d9ae7f2bSJakub Kicinski #include "../nfp_asm.h" 44d9ae7f2bSJakub Kicinski 45d9ae7f2bSJakub Kicinski /* --- NFP prog --- */ 46d9ae7f2bSJakub Kicinski /* Foreach "multiple" entries macros provide pos and next<n> pointers. 47d9ae7f2bSJakub Kicinski * It's safe to modify the next pointers (but not pos). 48d9ae7f2bSJakub Kicinski */ 49d9ae7f2bSJakub Kicinski #define nfp_for_each_insn_walk2(nfp_prog, pos, next) \ 50d9ae7f2bSJakub Kicinski for (pos = list_first_entry(&(nfp_prog)->insns, typeof(*pos), l), \ 51d9ae7f2bSJakub Kicinski next = list_next_entry(pos, l); \ 52d9ae7f2bSJakub Kicinski &(nfp_prog)->insns != &pos->l && \ 53d9ae7f2bSJakub Kicinski &(nfp_prog)->insns != &next->l; \ 54d9ae7f2bSJakub Kicinski pos = nfp_meta_next(pos), \ 55d9ae7f2bSJakub Kicinski next = nfp_meta_next(pos)) 56d9ae7f2bSJakub Kicinski 57d9ae7f2bSJakub Kicinski #define nfp_for_each_insn_walk3(nfp_prog, pos, next, next2) \ 58d9ae7f2bSJakub Kicinski for (pos = list_first_entry(&(nfp_prog)->insns, typeof(*pos), l), \ 59d9ae7f2bSJakub Kicinski next = list_next_entry(pos, l), \ 60d9ae7f2bSJakub Kicinski next2 = list_next_entry(next, l); \ 61d9ae7f2bSJakub Kicinski &(nfp_prog)->insns != &pos->l && \ 62d9ae7f2bSJakub Kicinski &(nfp_prog)->insns != &next->l && \ 63d9ae7f2bSJakub Kicinski &(nfp_prog)->insns != &next2->l; \ 64d9ae7f2bSJakub Kicinski pos = nfp_meta_next(pos), \ 65d9ae7f2bSJakub Kicinski next = nfp_meta_next(pos), \ 66d9ae7f2bSJakub Kicinski next2 = nfp_meta_next(next)) 67d9ae7f2bSJakub Kicinski 68d9ae7f2bSJakub Kicinski static bool 69d9ae7f2bSJakub Kicinski nfp_meta_has_prev(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 70d9ae7f2bSJakub Kicinski { 71d9ae7f2bSJakub Kicinski return meta->l.prev != &nfp_prog->insns; 72d9ae7f2bSJakub Kicinski } 73d9ae7f2bSJakub Kicinski 74d9ae7f2bSJakub Kicinski static void nfp_prog_push(struct nfp_prog *nfp_prog, u64 insn) 75d9ae7f2bSJakub Kicinski { 76d9ae7f2bSJakub Kicinski if (nfp_prog->__prog_alloc_len == nfp_prog->prog_len) { 77d9ae7f2bSJakub Kicinski nfp_prog->error = -ENOSPC; 78d9ae7f2bSJakub Kicinski return; 79d9ae7f2bSJakub Kicinski } 80d9ae7f2bSJakub Kicinski 81d9ae7f2bSJakub Kicinski nfp_prog->prog[nfp_prog->prog_len] = insn; 82d9ae7f2bSJakub Kicinski nfp_prog->prog_len++; 83d9ae7f2bSJakub Kicinski } 84d9ae7f2bSJakub Kicinski 85d9ae7f2bSJakub Kicinski static unsigned int nfp_prog_current_offset(struct nfp_prog *nfp_prog) 86d9ae7f2bSJakub Kicinski { 87d9ae7f2bSJakub Kicinski return nfp_prog->start_off + nfp_prog->prog_len; 88d9ae7f2bSJakub Kicinski } 89d9ae7f2bSJakub Kicinski 90d9ae7f2bSJakub Kicinski static unsigned int 91d9ae7f2bSJakub Kicinski nfp_prog_offset_to_index(struct nfp_prog *nfp_prog, unsigned int offset) 92d9ae7f2bSJakub Kicinski { 93d9ae7f2bSJakub Kicinski return offset - nfp_prog->start_off; 94d9ae7f2bSJakub Kicinski } 95d9ae7f2bSJakub Kicinski 96d9ae7f2bSJakub Kicinski /* --- Emitters --- */ 97d9ae7f2bSJakub Kicinski static void 98d9ae7f2bSJakub Kicinski __emit_cmd(struct nfp_prog *nfp_prog, enum cmd_tgt_map op, 995468a8b9SJakub Kicinski u8 mode, u8 xfer, u8 areg, u8 breg, u8 size, bool sync, bool indir) 100d9ae7f2bSJakub Kicinski { 101d9ae7f2bSJakub Kicinski enum cmd_ctx_swap ctx; 102d9ae7f2bSJakub Kicinski u64 insn; 103d9ae7f2bSJakub Kicinski 104d9ae7f2bSJakub Kicinski if (sync) 105d9ae7f2bSJakub Kicinski ctx = CMD_CTX_SWAP; 106d9ae7f2bSJakub Kicinski else 107d9ae7f2bSJakub Kicinski ctx = CMD_CTX_NO_SWAP; 108d9ae7f2bSJakub Kicinski 109d9ae7f2bSJakub Kicinski insn = FIELD_PREP(OP_CMD_A_SRC, areg) | 110d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_CTX, ctx) | 111d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_B_SRC, breg) | 112d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_TOKEN, cmd_tgt_act[op].token) | 113d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_XFER, xfer) | 114d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_CNT, size) | 115d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_SIG, sync) | 116d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_TGT_CMD, cmd_tgt_act[op].tgt_cmd) | 1175468a8b9SJakub Kicinski FIELD_PREP(OP_CMD_INDIR, indir) | 118d9ae7f2bSJakub Kicinski FIELD_PREP(OP_CMD_MODE, mode); 119d9ae7f2bSJakub Kicinski 120d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 121d9ae7f2bSJakub Kicinski } 122d9ae7f2bSJakub Kicinski 123d9ae7f2bSJakub Kicinski static void 1245468a8b9SJakub Kicinski emit_cmd_any(struct nfp_prog *nfp_prog, enum cmd_tgt_map op, u8 mode, u8 xfer, 1255468a8b9SJakub Kicinski swreg lreg, swreg rreg, u8 size, bool sync, bool indir) 126d9ae7f2bSJakub Kicinski { 127d9ae7f2bSJakub Kicinski struct nfp_insn_re_regs reg; 128d9ae7f2bSJakub Kicinski int err; 129d9ae7f2bSJakub Kicinski 130d9ae7f2bSJakub Kicinski err = swreg_to_restricted(reg_none(), lreg, rreg, ®, false); 131d9ae7f2bSJakub Kicinski if (err) { 132d9ae7f2bSJakub Kicinski nfp_prog->error = err; 133d9ae7f2bSJakub Kicinski return; 134d9ae7f2bSJakub Kicinski } 135d9ae7f2bSJakub Kicinski if (reg.swap) { 136d9ae7f2bSJakub Kicinski pr_err("cmd can't swap arguments\n"); 137d9ae7f2bSJakub Kicinski nfp_prog->error = -EFAULT; 138d9ae7f2bSJakub Kicinski return; 139d9ae7f2bSJakub Kicinski } 140995e101fSJakub Kicinski if (reg.dst_lmextn || reg.src_lmextn) { 141995e101fSJakub Kicinski pr_err("cmd can't use LMextn\n"); 142995e101fSJakub Kicinski nfp_prog->error = -EFAULT; 143995e101fSJakub Kicinski return; 144995e101fSJakub Kicinski } 145d9ae7f2bSJakub Kicinski 1465468a8b9SJakub Kicinski __emit_cmd(nfp_prog, op, mode, xfer, reg.areg, reg.breg, size, sync, 1475468a8b9SJakub Kicinski indir); 1485468a8b9SJakub Kicinski } 1495468a8b9SJakub Kicinski 1505468a8b9SJakub Kicinski static void 1515468a8b9SJakub Kicinski emit_cmd(struct nfp_prog *nfp_prog, enum cmd_tgt_map op, u8 mode, u8 xfer, 1525468a8b9SJakub Kicinski swreg lreg, swreg rreg, u8 size, bool sync) 1535468a8b9SJakub Kicinski { 1545468a8b9SJakub Kicinski emit_cmd_any(nfp_prog, op, mode, xfer, lreg, rreg, size, sync, false); 155d9ae7f2bSJakub Kicinski } 156d9ae7f2bSJakub Kicinski 157d9ae7f2bSJakub Kicinski static void 158d9ae7f2bSJakub Kicinski __emit_br(struct nfp_prog *nfp_prog, enum br_mask mask, enum br_ev_pip ev_pip, 159d9ae7f2bSJakub Kicinski enum br_ctx_signal_state css, u16 addr, u8 defer) 160d9ae7f2bSJakub Kicinski { 161d9ae7f2bSJakub Kicinski u16 addr_lo, addr_hi; 162d9ae7f2bSJakub Kicinski u64 insn; 163d9ae7f2bSJakub Kicinski 164d9ae7f2bSJakub Kicinski addr_lo = addr & (OP_BR_ADDR_LO >> __bf_shf(OP_BR_ADDR_LO)); 165d9ae7f2bSJakub Kicinski addr_hi = addr != addr_lo; 166d9ae7f2bSJakub Kicinski 167d9ae7f2bSJakub Kicinski insn = OP_BR_BASE | 168d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_MASK, mask) | 169d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_EV_PIP, ev_pip) | 170d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_CSS, css) | 171d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_DEFBR, defer) | 172d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_ADDR_LO, addr_lo) | 173d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_ADDR_HI, addr_hi); 174d9ae7f2bSJakub Kicinski 175d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 176d9ae7f2bSJakub Kicinski } 177d9ae7f2bSJakub Kicinski 178d9ae7f2bSJakub Kicinski static void emit_br_def(struct nfp_prog *nfp_prog, u16 addr, u8 defer) 179d9ae7f2bSJakub Kicinski { 180d9ae7f2bSJakub Kicinski if (defer > 2) { 181d9ae7f2bSJakub Kicinski pr_err("BUG: branch defer out of bounds %d\n", defer); 182d9ae7f2bSJakub Kicinski nfp_prog->error = -EFAULT; 183d9ae7f2bSJakub Kicinski return; 184d9ae7f2bSJakub Kicinski } 185d9ae7f2bSJakub Kicinski __emit_br(nfp_prog, BR_UNC, BR_EV_PIP_UNCOND, BR_CSS_NONE, addr, defer); 186d9ae7f2bSJakub Kicinski } 187d9ae7f2bSJakub Kicinski 188d9ae7f2bSJakub Kicinski static void 189d9ae7f2bSJakub Kicinski emit_br(struct nfp_prog *nfp_prog, enum br_mask mask, u16 addr, u8 defer) 190d9ae7f2bSJakub Kicinski { 191d9ae7f2bSJakub Kicinski __emit_br(nfp_prog, mask, 192d9ae7f2bSJakub Kicinski mask != BR_UNC ? BR_EV_PIP_COND : BR_EV_PIP_UNCOND, 193d9ae7f2bSJakub Kicinski BR_CSS_NONE, addr, defer); 194d9ae7f2bSJakub Kicinski } 195d9ae7f2bSJakub Kicinski 196d9ae7f2bSJakub Kicinski static void 197d9ae7f2bSJakub Kicinski __emit_immed(struct nfp_prog *nfp_prog, u16 areg, u16 breg, u16 imm_hi, 198d9ae7f2bSJakub Kicinski enum immed_width width, bool invert, 199995e101fSJakub Kicinski enum immed_shift shift, bool wr_both, 200995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 201d9ae7f2bSJakub Kicinski { 202d9ae7f2bSJakub Kicinski u64 insn; 203d9ae7f2bSJakub Kicinski 204d9ae7f2bSJakub Kicinski insn = OP_IMMED_BASE | 205d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_A_SRC, areg) | 206d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_B_SRC, breg) | 207d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_IMM, imm_hi) | 208d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_WIDTH, width) | 209d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_INV, invert) | 210d9ae7f2bSJakub Kicinski FIELD_PREP(OP_IMMED_SHIFT, shift) | 211995e101fSJakub Kicinski FIELD_PREP(OP_IMMED_WR_AB, wr_both) | 212995e101fSJakub Kicinski FIELD_PREP(OP_IMMED_SRC_LMEXTN, src_lmextn) | 213995e101fSJakub Kicinski FIELD_PREP(OP_IMMED_DST_LMEXTN, dst_lmextn); 214d9ae7f2bSJakub Kicinski 215d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 216d9ae7f2bSJakub Kicinski } 217d9ae7f2bSJakub Kicinski 218d9ae7f2bSJakub Kicinski static void 219b3f868dfSJakub Kicinski emit_immed(struct nfp_prog *nfp_prog, swreg dst, u16 imm, 220d9ae7f2bSJakub Kicinski enum immed_width width, bool invert, enum immed_shift shift) 221d9ae7f2bSJakub Kicinski { 222d9ae7f2bSJakub Kicinski struct nfp_insn_ur_regs reg; 223d9ae7f2bSJakub Kicinski int err; 224d9ae7f2bSJakub Kicinski 225b3f868dfSJakub Kicinski if (swreg_type(dst) == NN_REG_IMM) { 226d9ae7f2bSJakub Kicinski nfp_prog->error = -EFAULT; 227d9ae7f2bSJakub Kicinski return; 228d9ae7f2bSJakub Kicinski } 229d9ae7f2bSJakub Kicinski 230d9ae7f2bSJakub Kicinski err = swreg_to_unrestricted(dst, dst, reg_imm(imm & 0xff), ®); 231d9ae7f2bSJakub Kicinski if (err) { 232d9ae7f2bSJakub Kicinski nfp_prog->error = err; 233d9ae7f2bSJakub Kicinski return; 234d9ae7f2bSJakub Kicinski } 235d9ae7f2bSJakub Kicinski 2363239e7bbSJiong Wang /* Use reg.dst when destination is No-Dest. */ 2373239e7bbSJiong Wang __emit_immed(nfp_prog, 2383239e7bbSJiong Wang swreg_type(dst) == NN_REG_NONE ? reg.dst : reg.areg, 2393239e7bbSJiong Wang reg.breg, imm >> 8, width, invert, shift, 2403239e7bbSJiong Wang reg.wr_both, reg.dst_lmextn, reg.src_lmextn); 241d9ae7f2bSJakub Kicinski } 242d9ae7f2bSJakub Kicinski 243d9ae7f2bSJakub Kicinski static void 244d9ae7f2bSJakub Kicinski __emit_shf(struct nfp_prog *nfp_prog, u16 dst, enum alu_dst_ab dst_ab, 245d9ae7f2bSJakub Kicinski enum shf_sc sc, u8 shift, 246995e101fSJakub Kicinski u16 areg, enum shf_op op, u16 breg, bool i8, bool sw, bool wr_both, 247995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 248d9ae7f2bSJakub Kicinski { 249d9ae7f2bSJakub Kicinski u64 insn; 250d9ae7f2bSJakub Kicinski 251d9ae7f2bSJakub Kicinski if (!FIELD_FIT(OP_SHF_SHIFT, shift)) { 252d9ae7f2bSJakub Kicinski nfp_prog->error = -EFAULT; 253d9ae7f2bSJakub Kicinski return; 254d9ae7f2bSJakub Kicinski } 255d9ae7f2bSJakub Kicinski 256d9ae7f2bSJakub Kicinski if (sc == SHF_SC_L_SHF) 257d9ae7f2bSJakub Kicinski shift = 32 - shift; 258d9ae7f2bSJakub Kicinski 259d9ae7f2bSJakub Kicinski insn = OP_SHF_BASE | 260d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_A_SRC, areg) | 261d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_SC, sc) | 262d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_B_SRC, breg) | 263d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_I8, i8) | 264d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_SW, sw) | 265d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_DST, dst) | 266d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_SHIFT, shift) | 267d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_OP, op) | 268d9ae7f2bSJakub Kicinski FIELD_PREP(OP_SHF_DST_AB, dst_ab) | 269995e101fSJakub Kicinski FIELD_PREP(OP_SHF_WR_AB, wr_both) | 270995e101fSJakub Kicinski FIELD_PREP(OP_SHF_SRC_LMEXTN, src_lmextn) | 271995e101fSJakub Kicinski FIELD_PREP(OP_SHF_DST_LMEXTN, dst_lmextn); 272d9ae7f2bSJakub Kicinski 273d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 274d9ae7f2bSJakub Kicinski } 275d9ae7f2bSJakub Kicinski 276d9ae7f2bSJakub Kicinski static void 277b3f868dfSJakub Kicinski emit_shf(struct nfp_prog *nfp_prog, swreg dst, 278b3f868dfSJakub Kicinski swreg lreg, enum shf_op op, swreg rreg, enum shf_sc sc, u8 shift) 279d9ae7f2bSJakub Kicinski { 280d9ae7f2bSJakub Kicinski struct nfp_insn_re_regs reg; 281d9ae7f2bSJakub Kicinski int err; 282d9ae7f2bSJakub Kicinski 283d9ae7f2bSJakub Kicinski err = swreg_to_restricted(dst, lreg, rreg, ®, true); 284d9ae7f2bSJakub Kicinski if (err) { 285d9ae7f2bSJakub Kicinski nfp_prog->error = err; 286d9ae7f2bSJakub Kicinski return; 287d9ae7f2bSJakub Kicinski } 288d9ae7f2bSJakub Kicinski 289d9ae7f2bSJakub Kicinski __emit_shf(nfp_prog, reg.dst, reg.dst_ab, sc, shift, 290995e101fSJakub Kicinski reg.areg, op, reg.breg, reg.i8, reg.swap, reg.wr_both, 291995e101fSJakub Kicinski reg.dst_lmextn, reg.src_lmextn); 292d9ae7f2bSJakub Kicinski } 293d9ae7f2bSJakub Kicinski 294d9ae7f2bSJakub Kicinski static void 295d9ae7f2bSJakub Kicinski __emit_alu(struct nfp_prog *nfp_prog, u16 dst, enum alu_dst_ab dst_ab, 296995e101fSJakub Kicinski u16 areg, enum alu_op op, u16 breg, bool swap, bool wr_both, 297995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 298d9ae7f2bSJakub Kicinski { 299d9ae7f2bSJakub Kicinski u64 insn; 300d9ae7f2bSJakub Kicinski 301d9ae7f2bSJakub Kicinski insn = OP_ALU_BASE | 302d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_A_SRC, areg) | 303d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_B_SRC, breg) | 304d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_DST, dst) | 305d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_SW, swap) | 306d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_OP, op) | 307d9ae7f2bSJakub Kicinski FIELD_PREP(OP_ALU_DST_AB, dst_ab) | 308995e101fSJakub Kicinski FIELD_PREP(OP_ALU_WR_AB, wr_both) | 309995e101fSJakub Kicinski FIELD_PREP(OP_ALU_SRC_LMEXTN, src_lmextn) | 310995e101fSJakub Kicinski FIELD_PREP(OP_ALU_DST_LMEXTN, dst_lmextn); 311d9ae7f2bSJakub Kicinski 312d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 313d9ae7f2bSJakub Kicinski } 314d9ae7f2bSJakub Kicinski 315d9ae7f2bSJakub Kicinski static void 316b3f868dfSJakub Kicinski emit_alu(struct nfp_prog *nfp_prog, swreg dst, 317b3f868dfSJakub Kicinski swreg lreg, enum alu_op op, swreg rreg) 318d9ae7f2bSJakub Kicinski { 319d9ae7f2bSJakub Kicinski struct nfp_insn_ur_regs reg; 320d9ae7f2bSJakub Kicinski int err; 321d9ae7f2bSJakub Kicinski 322d9ae7f2bSJakub Kicinski err = swreg_to_unrestricted(dst, lreg, rreg, ®); 323d9ae7f2bSJakub Kicinski if (err) { 324d9ae7f2bSJakub Kicinski nfp_prog->error = err; 325d9ae7f2bSJakub Kicinski return; 326d9ae7f2bSJakub Kicinski } 327d9ae7f2bSJakub Kicinski 328d9ae7f2bSJakub Kicinski __emit_alu(nfp_prog, reg.dst, reg.dst_ab, 329995e101fSJakub Kicinski reg.areg, op, reg.breg, reg.swap, reg.wr_both, 330995e101fSJakub Kicinski reg.dst_lmextn, reg.src_lmextn); 331d9ae7f2bSJakub Kicinski } 332d9ae7f2bSJakub Kicinski 333d9ae7f2bSJakub Kicinski static void 334d9ae7f2bSJakub Kicinski __emit_ld_field(struct nfp_prog *nfp_prog, enum shf_sc sc, 335d9ae7f2bSJakub Kicinski u8 areg, u8 bmask, u8 breg, u8 shift, bool imm8, 336995e101fSJakub Kicinski bool zero, bool swap, bool wr_both, 337995e101fSJakub Kicinski bool dst_lmextn, bool src_lmextn) 338d9ae7f2bSJakub Kicinski { 339d9ae7f2bSJakub Kicinski u64 insn; 340d9ae7f2bSJakub Kicinski 341d9ae7f2bSJakub Kicinski insn = OP_LDF_BASE | 342d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_A_SRC, areg) | 343d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_SC, sc) | 344d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_B_SRC, breg) | 345d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_I8, imm8) | 346d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_SW, swap) | 347d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_ZF, zero) | 348d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_BMASK, bmask) | 349d9ae7f2bSJakub Kicinski FIELD_PREP(OP_LDF_SHF, shift) | 350995e101fSJakub Kicinski FIELD_PREP(OP_LDF_WR_AB, wr_both) | 351995e101fSJakub Kicinski FIELD_PREP(OP_LDF_SRC_LMEXTN, src_lmextn) | 352995e101fSJakub Kicinski FIELD_PREP(OP_LDF_DST_LMEXTN, dst_lmextn); 353d9ae7f2bSJakub Kicinski 354d9ae7f2bSJakub Kicinski nfp_prog_push(nfp_prog, insn); 355d9ae7f2bSJakub Kicinski } 356d9ae7f2bSJakub Kicinski 357d9ae7f2bSJakub Kicinski static void 358bc8c80a8SJakub Kicinski emit_ld_field_any(struct nfp_prog *nfp_prog, swreg dst, u8 bmask, swreg src, 359bc8c80a8SJakub Kicinski enum shf_sc sc, u8 shift, bool zero) 360d9ae7f2bSJakub Kicinski { 361d9ae7f2bSJakub Kicinski struct nfp_insn_re_regs reg; 362d9ae7f2bSJakub Kicinski int err; 363d9ae7f2bSJakub Kicinski 3642de1be1dSJakub Kicinski /* Note: ld_field is special as it uses one of the src regs as dst */ 3652de1be1dSJakub Kicinski err = swreg_to_restricted(dst, dst, src, ®, true); 366d9ae7f2bSJakub Kicinski if (err) { 367d9ae7f2bSJakub Kicinski nfp_prog->error = err; 368d9ae7f2bSJakub Kicinski return; 369d9ae7f2bSJakub Kicinski } 370d9ae7f2bSJakub Kicinski 371d9ae7f2bSJakub Kicinski __emit_ld_field(nfp_prog, sc, reg.areg, bmask, reg.breg, shift, 372995e101fSJakub Kicinski reg.i8, zero, reg.swap, reg.wr_both, 373995e101fSJakub Kicinski reg.dst_lmextn, reg.src_lmextn); 374d9ae7f2bSJakub Kicinski } 375d9ae7f2bSJakub Kicinski 376d9ae7f2bSJakub Kicinski static void 377b3f868dfSJakub Kicinski emit_ld_field(struct nfp_prog *nfp_prog, swreg dst, u8 bmask, swreg src, 378d9ae7f2bSJakub Kicinski enum shf_sc sc, u8 shift) 379d9ae7f2bSJakub Kicinski { 380bc8c80a8SJakub Kicinski emit_ld_field_any(nfp_prog, dst, bmask, src, sc, shift, false); 381d9ae7f2bSJakub Kicinski } 382d9ae7f2bSJakub Kicinski 3832df03a50SJakub Kicinski static void 3842df03a50SJakub Kicinski __emit_lcsr(struct nfp_prog *nfp_prog, u16 areg, u16 breg, bool wr, u16 addr, 3852df03a50SJakub Kicinski bool dst_lmextn, bool src_lmextn) 3862df03a50SJakub Kicinski { 3872df03a50SJakub Kicinski u64 insn; 3882df03a50SJakub Kicinski 3892df03a50SJakub Kicinski insn = OP_LCSR_BASE | 3902df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_A_SRC, areg) | 3912df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_B_SRC, breg) | 3922df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_WRITE, wr) | 3932df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_ADDR, addr) | 3942df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_SRC_LMEXTN, src_lmextn) | 3952df03a50SJakub Kicinski FIELD_PREP(OP_LCSR_DST_LMEXTN, dst_lmextn); 3962df03a50SJakub Kicinski 3972df03a50SJakub Kicinski nfp_prog_push(nfp_prog, insn); 3982df03a50SJakub Kicinski } 3992df03a50SJakub Kicinski 4002df03a50SJakub Kicinski static void emit_csr_wr(struct nfp_prog *nfp_prog, swreg src, u16 addr) 4012df03a50SJakub Kicinski { 4022df03a50SJakub Kicinski struct nfp_insn_ur_regs reg; 4032df03a50SJakub Kicinski int err; 4042df03a50SJakub Kicinski 4052df03a50SJakub Kicinski /* This instruction takes immeds instead of reg_none() for the ignored 4062df03a50SJakub Kicinski * operand, but we can't encode 2 immeds in one instr with our normal 4072df03a50SJakub Kicinski * swreg infra so if param is an immed, we encode as reg_none() and 4082df03a50SJakub Kicinski * copy the immed to both operands. 4092df03a50SJakub Kicinski */ 4102df03a50SJakub Kicinski if (swreg_type(src) == NN_REG_IMM) { 4112df03a50SJakub Kicinski err = swreg_to_unrestricted(reg_none(), src, reg_none(), ®); 4122df03a50SJakub Kicinski reg.breg = reg.areg; 4132df03a50SJakub Kicinski } else { 4142df03a50SJakub Kicinski err = swreg_to_unrestricted(reg_none(), src, reg_imm(0), ®); 4152df03a50SJakub Kicinski } 4162df03a50SJakub Kicinski if (err) { 4172df03a50SJakub Kicinski nfp_prog->error = err; 4182df03a50SJakub Kicinski return; 4192df03a50SJakub Kicinski } 4202df03a50SJakub Kicinski 4212df03a50SJakub Kicinski __emit_lcsr(nfp_prog, reg.areg, reg.breg, true, addr / 4, 4222df03a50SJakub Kicinski false, reg.src_lmextn); 4232df03a50SJakub Kicinski } 4242df03a50SJakub Kicinski 4251c03e03fSJakub Kicinski static void emit_nop(struct nfp_prog *nfp_prog) 4261c03e03fSJakub Kicinski { 4271c03e03fSJakub Kicinski __emit_immed(nfp_prog, UR_REG_IMM, UR_REG_IMM, 0, 0, 0, 0, 0, 0, 0); 4281c03e03fSJakub Kicinski } 4291c03e03fSJakub Kicinski 430d9ae7f2bSJakub Kicinski /* --- Wrappers --- */ 431d9ae7f2bSJakub Kicinski static bool pack_immed(u32 imm, u16 *val, enum immed_shift *shift) 432d9ae7f2bSJakub Kicinski { 433d9ae7f2bSJakub Kicinski if (!(imm & 0xffff0000)) { 434d9ae7f2bSJakub Kicinski *val = imm; 435d9ae7f2bSJakub Kicinski *shift = IMMED_SHIFT_0B; 436d9ae7f2bSJakub Kicinski } else if (!(imm & 0xff0000ff)) { 437d9ae7f2bSJakub Kicinski *val = imm >> 8; 438d9ae7f2bSJakub Kicinski *shift = IMMED_SHIFT_1B; 439d9ae7f2bSJakub Kicinski } else if (!(imm & 0x0000ffff)) { 440d9ae7f2bSJakub Kicinski *val = imm >> 16; 441d9ae7f2bSJakub Kicinski *shift = IMMED_SHIFT_2B; 442d9ae7f2bSJakub Kicinski } else { 443d9ae7f2bSJakub Kicinski return false; 444d9ae7f2bSJakub Kicinski } 445d9ae7f2bSJakub Kicinski 446d9ae7f2bSJakub Kicinski return true; 447d9ae7f2bSJakub Kicinski } 448d9ae7f2bSJakub Kicinski 449b3f868dfSJakub Kicinski static void wrp_immed(struct nfp_prog *nfp_prog, swreg dst, u32 imm) 450d9ae7f2bSJakub Kicinski { 451d9ae7f2bSJakub Kicinski enum immed_shift shift; 452d9ae7f2bSJakub Kicinski u16 val; 453d9ae7f2bSJakub Kicinski 454d9ae7f2bSJakub Kicinski if (pack_immed(imm, &val, &shift)) { 455d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, val, IMMED_WIDTH_ALL, false, shift); 456d9ae7f2bSJakub Kicinski } else if (pack_immed(~imm, &val, &shift)) { 457d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, val, IMMED_WIDTH_ALL, true, shift); 458d9ae7f2bSJakub Kicinski } else { 459d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, imm & 0xffff, IMMED_WIDTH_ALL, 460d9ae7f2bSJakub Kicinski false, IMMED_SHIFT_0B); 461d9ae7f2bSJakub Kicinski emit_immed(nfp_prog, dst, imm >> 16, IMMED_WIDTH_WORD, 462d9ae7f2bSJakub Kicinski false, IMMED_SHIFT_2B); 463d9ae7f2bSJakub Kicinski } 464d9ae7f2bSJakub Kicinski } 465d9ae7f2bSJakub Kicinski 466d9ae7f2bSJakub Kicinski /* ur_load_imm_any() - encode immediate or use tmp register (unrestricted) 467d9ae7f2bSJakub Kicinski * If the @imm is small enough encode it directly in operand and return 468d9ae7f2bSJakub Kicinski * otherwise load @imm to a spare register and return its encoding. 469d9ae7f2bSJakub Kicinski */ 470b3f868dfSJakub Kicinski static swreg ur_load_imm_any(struct nfp_prog *nfp_prog, u32 imm, swreg tmp_reg) 471d9ae7f2bSJakub Kicinski { 472d9ae7f2bSJakub Kicinski if (FIELD_FIT(UR_REG_IMM_MAX, imm)) 473d9ae7f2bSJakub Kicinski return reg_imm(imm); 474d9ae7f2bSJakub Kicinski 475d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, tmp_reg, imm); 476d9ae7f2bSJakub Kicinski return tmp_reg; 477d9ae7f2bSJakub Kicinski } 478d9ae7f2bSJakub Kicinski 479d9ae7f2bSJakub Kicinski /* re_load_imm_any() - encode immediate or use tmp register (restricted) 480d9ae7f2bSJakub Kicinski * If the @imm is small enough encode it directly in operand and return 481d9ae7f2bSJakub Kicinski * otherwise load @imm to a spare register and return its encoding. 482d9ae7f2bSJakub Kicinski */ 483b3f868dfSJakub Kicinski static swreg re_load_imm_any(struct nfp_prog *nfp_prog, u32 imm, swreg tmp_reg) 484d9ae7f2bSJakub Kicinski { 485d9ae7f2bSJakub Kicinski if (FIELD_FIT(RE_REG_IMM_MAX, imm)) 486d9ae7f2bSJakub Kicinski return reg_imm(imm); 487d9ae7f2bSJakub Kicinski 488d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, tmp_reg, imm); 489d9ae7f2bSJakub Kicinski return tmp_reg; 490d9ae7f2bSJakub Kicinski } 491d9ae7f2bSJakub Kicinski 492ff42bb9fSJakub Kicinski static void wrp_nops(struct nfp_prog *nfp_prog, unsigned int count) 493ff42bb9fSJakub Kicinski { 494ff42bb9fSJakub Kicinski while (count--) 495ff42bb9fSJakub Kicinski emit_nop(nfp_prog); 496ff42bb9fSJakub Kicinski } 497ff42bb9fSJakub Kicinski 498d9ae7f2bSJakub Kicinski static void 499d9ae7f2bSJakub Kicinski wrp_br_special(struct nfp_prog *nfp_prog, enum br_mask mask, 500d9ae7f2bSJakub Kicinski enum br_special special) 501d9ae7f2bSJakub Kicinski { 502d9ae7f2bSJakub Kicinski emit_br(nfp_prog, mask, 0, 0); 503d9ae7f2bSJakub Kicinski 504d9ae7f2bSJakub Kicinski nfp_prog->prog[nfp_prog->prog_len - 1] |= 505d9ae7f2bSJakub Kicinski FIELD_PREP(OP_BR_SPECIAL, special); 506d9ae7f2bSJakub Kicinski } 507d9ae7f2bSJakub Kicinski 508c000dfb5SJakub Kicinski static void wrp_mov(struct nfp_prog *nfp_prog, swreg dst, swreg src) 509c000dfb5SJakub Kicinski { 510c000dfb5SJakub Kicinski emit_alu(nfp_prog, dst, reg_none(), ALU_OP_NONE, src); 511c000dfb5SJakub Kicinski } 512c000dfb5SJakub Kicinski 513d9ae7f2bSJakub Kicinski static void wrp_reg_mov(struct nfp_prog *nfp_prog, u16 dst, u16 src) 514d9ae7f2bSJakub Kicinski { 515c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_both(dst), reg_b(src)); 516d9ae7f2bSJakub Kicinski } 517d9ae7f2bSJakub Kicinski 518d9ae7f2bSJakub Kicinski static int 5190a793977SJakub Kicinski data_ld(struct nfp_prog *nfp_prog, swreg offset, u8 dst_gpr, int size) 520d9ae7f2bSJakub Kicinski { 521d9ae7f2bSJakub Kicinski unsigned int i; 522d9ae7f2bSJakub Kicinski u16 shift, sz; 523d9ae7f2bSJakub Kicinski 524d9ae7f2bSJakub Kicinski /* We load the value from the address indicated in @offset and then 525d9ae7f2bSJakub Kicinski * shift out the data we don't need. Note: this is big endian! 526d9ae7f2bSJakub Kicinski */ 5270a793977SJakub Kicinski sz = max(size, 4); 528d9ae7f2bSJakub Kicinski shift = size < 4 ? 4 - size : 0; 529d9ae7f2bSJakub Kicinski 5300a793977SJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_READ8, CMD_MODE_32b, 0, 5310a793977SJakub Kicinski pptr_reg(nfp_prog), offset, sz - 1, true); 5320a793977SJakub Kicinski 5330a793977SJakub Kicinski i = 0; 5340a793977SJakub Kicinski if (shift) 5350a793977SJakub Kicinski emit_shf(nfp_prog, reg_both(dst_gpr), reg_none(), SHF_OP_NONE, 5360a793977SJakub Kicinski reg_xfer(0), SHF_SC_R_SHF, shift * 8); 5370a793977SJakub Kicinski else 5380a793977SJakub Kicinski for (; i * 4 < size; i++) 5390a793977SJakub Kicinski wrp_mov(nfp_prog, reg_both(dst_gpr + i), reg_xfer(i)); 5400a793977SJakub Kicinski 5410a793977SJakub Kicinski if (i < 2) 5420a793977SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst_gpr + 1), 0); 5430a793977SJakub Kicinski 5440a793977SJakub Kicinski return 0; 5450a793977SJakub Kicinski } 5460a793977SJakub Kicinski 5470a793977SJakub Kicinski static int 5482ca71441SJakub Kicinski data_ld_host_order(struct nfp_prog *nfp_prog, u8 src_gpr, swreg offset, 5492ca71441SJakub Kicinski u8 dst_gpr, int size) 5502ca71441SJakub Kicinski { 5512ca71441SJakub Kicinski unsigned int i; 5522ca71441SJakub Kicinski u8 mask, sz; 5532ca71441SJakub Kicinski 5542ca71441SJakub Kicinski /* We load the value from the address indicated in @offset and then 5552ca71441SJakub Kicinski * mask out the data we don't need. Note: this is little endian! 5562ca71441SJakub Kicinski */ 5572ca71441SJakub Kicinski sz = max(size, 4); 5582ca71441SJakub Kicinski mask = size < 4 ? GENMASK(size - 1, 0) : 0; 5592ca71441SJakub Kicinski 5602ca71441SJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_READ32_SWAP, CMD_MODE_32b, 0, 5612ca71441SJakub Kicinski reg_a(src_gpr), offset, sz / 4 - 1, true); 5622ca71441SJakub Kicinski 5632ca71441SJakub Kicinski i = 0; 5642ca71441SJakub Kicinski if (mask) 5652ca71441SJakub Kicinski emit_ld_field_any(nfp_prog, reg_both(dst_gpr), mask, 5662ca71441SJakub Kicinski reg_xfer(0), SHF_SC_NONE, 0, true); 5672ca71441SJakub Kicinski else 5682ca71441SJakub Kicinski for (; i * 4 < size; i++) 5692ca71441SJakub Kicinski wrp_mov(nfp_prog, reg_both(dst_gpr + i), reg_xfer(i)); 5702ca71441SJakub Kicinski 5712ca71441SJakub Kicinski if (i < 2) 5722ca71441SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst_gpr + 1), 0); 5732ca71441SJakub Kicinski 5742ca71441SJakub Kicinski return 0; 5752ca71441SJakub Kicinski } 5762ca71441SJakub Kicinski 5772ca71441SJakub Kicinski static int 5780a793977SJakub Kicinski construct_data_ind_ld(struct nfp_prog *nfp_prog, u16 offset, u16 src, u8 size) 5790a793977SJakub Kicinski { 5800a793977SJakub Kicinski swreg tmp_reg; 5810a793977SJakub Kicinski 582d9ae7f2bSJakub Kicinski /* Calculate the true offset (src_reg + imm) */ 583d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, offset, imm_b(nfp_prog)); 5840a793977SJakub Kicinski emit_alu(nfp_prog, imm_both(nfp_prog), reg_a(src), ALU_OP_ADD, tmp_reg); 5850a793977SJakub Kicinski 586d9ae7f2bSJakub Kicinski /* Check packet length (size guaranteed to fit b/c it's u8) */ 587d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_a(nfp_prog), 588d9ae7f2bSJakub Kicinski imm_a(nfp_prog), ALU_OP_ADD, reg_imm(size)); 589d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 59018e53b6cSJakub Kicinski plen_reg(nfp_prog), ALU_OP_SUB, imm_a(nfp_prog)); 591d9ae7f2bSJakub Kicinski wrp_br_special(nfp_prog, BR_BLO, OP_BR_GO_ABORT); 5920a793977SJakub Kicinski 593d9ae7f2bSJakub Kicinski /* Load data */ 5940a793977SJakub Kicinski return data_ld(nfp_prog, imm_b(nfp_prog), 0, size); 595d9ae7f2bSJakub Kicinski } 596d9ae7f2bSJakub Kicinski 597d9ae7f2bSJakub Kicinski static int construct_data_ld(struct nfp_prog *nfp_prog, u16 offset, u8 size) 598d9ae7f2bSJakub Kicinski { 5990a793977SJakub Kicinski swreg tmp_reg; 6000a793977SJakub Kicinski 6010a793977SJakub Kicinski /* Check packet length */ 6020a793977SJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, offset + size, imm_a(nfp_prog)); 6030a793977SJakub Kicinski emit_alu(nfp_prog, reg_none(), plen_reg(nfp_prog), ALU_OP_SUB, tmp_reg); 6040a793977SJakub Kicinski wrp_br_special(nfp_prog, BR_BLO, OP_BR_GO_ABORT); 6050a793977SJakub Kicinski 6060a793977SJakub Kicinski /* Load data */ 6070a793977SJakub Kicinski tmp_reg = re_load_imm_any(nfp_prog, offset, imm_b(nfp_prog)); 6080a793977SJakub Kicinski return data_ld(nfp_prog, tmp_reg, 0, size); 609d9ae7f2bSJakub Kicinski } 610d9ae7f2bSJakub Kicinski 611e663fe38SJakub Kicinski static int 612e663fe38SJakub Kicinski data_stx_host_order(struct nfp_prog *nfp_prog, u8 dst_gpr, swreg offset, 613e663fe38SJakub Kicinski u8 src_gpr, u8 size) 614e663fe38SJakub Kicinski { 615e663fe38SJakub Kicinski unsigned int i; 616e663fe38SJakub Kicinski 617e663fe38SJakub Kicinski for (i = 0; i * 4 < size; i++) 618e663fe38SJakub Kicinski wrp_mov(nfp_prog, reg_xfer(i), reg_a(src_gpr + i)); 619e663fe38SJakub Kicinski 620e663fe38SJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_WRITE8_SWAP, CMD_MODE_32b, 0, 621e663fe38SJakub Kicinski reg_a(dst_gpr), offset, size - 1, true); 622e663fe38SJakub Kicinski 623e663fe38SJakub Kicinski return 0; 624e663fe38SJakub Kicinski } 625e663fe38SJakub Kicinski 626e663fe38SJakub Kicinski static int 627e663fe38SJakub Kicinski data_st_host_order(struct nfp_prog *nfp_prog, u8 dst_gpr, swreg offset, 628e663fe38SJakub Kicinski u64 imm, u8 size) 629e663fe38SJakub Kicinski { 630e663fe38SJakub Kicinski wrp_immed(nfp_prog, reg_xfer(0), imm); 631e663fe38SJakub Kicinski if (size == 8) 632e663fe38SJakub Kicinski wrp_immed(nfp_prog, reg_xfer(1), imm >> 32); 633e663fe38SJakub Kicinski 634e663fe38SJakub Kicinski emit_cmd(nfp_prog, CMD_TGT_WRITE8_SWAP, CMD_MODE_32b, 0, 635e663fe38SJakub Kicinski reg_a(dst_gpr), offset, size - 1, true); 636e663fe38SJakub Kicinski 637e663fe38SJakub Kicinski return 0; 638e663fe38SJakub Kicinski } 639e663fe38SJakub Kicinski 640ee9133a8SJakub Kicinski typedef int 641ee9133a8SJakub Kicinski (*lmem_step)(struct nfp_prog *nfp_prog, u8 gpr, u8 gpr_byte, s32 off, 6422df03a50SJakub Kicinski unsigned int size, bool first, bool new_gpr, bool last, bool lm3, 6432df03a50SJakub Kicinski bool needs_inc); 644a82b23fbSJakub Kicinski 645a82b23fbSJakub Kicinski static int 646a82b23fbSJakub Kicinski wrp_lmem_load(struct nfp_prog *nfp_prog, u8 dst, u8 dst_byte, s32 off, 6472df03a50SJakub Kicinski unsigned int size, bool first, bool new_gpr, bool last, bool lm3, 6482df03a50SJakub Kicinski bool needs_inc) 649a82b23fbSJakub Kicinski { 6502df03a50SJakub Kicinski bool should_inc = needs_inc && new_gpr && !last; 651a82b23fbSJakub Kicinski u32 idx, src_byte; 652a82b23fbSJakub Kicinski enum shf_sc sc; 653a82b23fbSJakub Kicinski swreg reg; 654a82b23fbSJakub Kicinski int shf; 655a82b23fbSJakub Kicinski u8 mask; 656a82b23fbSJakub Kicinski 657a82b23fbSJakub Kicinski if (WARN_ON_ONCE(dst_byte + size > 4 || off % 4 + size > 4)) 658a82b23fbSJakub Kicinski return -EOPNOTSUPP; 659a82b23fbSJakub Kicinski 660a82b23fbSJakub Kicinski idx = off / 4; 661a82b23fbSJakub Kicinski 662a82b23fbSJakub Kicinski /* Move the entire word */ 663a82b23fbSJakub Kicinski if (size == 4) { 6642df03a50SJakub Kicinski wrp_mov(nfp_prog, reg_both(dst), 6652df03a50SJakub Kicinski should_inc ? reg_lm_inc(3) : reg_lm(lm3 ? 3 : 0, idx)); 666a82b23fbSJakub Kicinski return 0; 667a82b23fbSJakub Kicinski } 668a82b23fbSJakub Kicinski 6692df03a50SJakub Kicinski if (WARN_ON_ONCE(lm3 && idx > RE_REG_LM_IDX_MAX)) 6702df03a50SJakub Kicinski return -EOPNOTSUPP; 6712df03a50SJakub Kicinski 672a82b23fbSJakub Kicinski src_byte = off % 4; 673a82b23fbSJakub Kicinski 674a82b23fbSJakub Kicinski mask = (1 << size) - 1; 675a82b23fbSJakub Kicinski mask <<= dst_byte; 676a82b23fbSJakub Kicinski 677a82b23fbSJakub Kicinski if (WARN_ON_ONCE(mask > 0xf)) 678a82b23fbSJakub Kicinski return -EOPNOTSUPP; 679a82b23fbSJakub Kicinski 680a82b23fbSJakub Kicinski shf = abs(src_byte - dst_byte) * 8; 681a82b23fbSJakub Kicinski if (src_byte == dst_byte) { 682a82b23fbSJakub Kicinski sc = SHF_SC_NONE; 683a82b23fbSJakub Kicinski } else if (src_byte < dst_byte) { 684a82b23fbSJakub Kicinski shf = 32 - shf; 685a82b23fbSJakub Kicinski sc = SHF_SC_L_SHF; 686a82b23fbSJakub Kicinski } else { 687a82b23fbSJakub Kicinski sc = SHF_SC_R_SHF; 688a82b23fbSJakub Kicinski } 689a82b23fbSJakub Kicinski 690a82b23fbSJakub Kicinski /* ld_field can address fewer indexes, if offset too large do RMW. 691a82b23fbSJakub Kicinski * Because we RMV twice we waste 2 cycles on unaligned 8 byte writes. 692a82b23fbSJakub Kicinski */ 693a82b23fbSJakub Kicinski if (idx <= RE_REG_LM_IDX_MAX) { 6942df03a50SJakub Kicinski reg = reg_lm(lm3 ? 3 : 0, idx); 695a82b23fbSJakub Kicinski } else { 696a82b23fbSJakub Kicinski reg = imm_a(nfp_prog); 6979a90c83cSJakub Kicinski /* If it's not the first part of the load and we start a new GPR 6989a90c83cSJakub Kicinski * that means we are loading a second part of the LMEM word into 6999a90c83cSJakub Kicinski * a new GPR. IOW we've already looked that LMEM word and 7009a90c83cSJakub Kicinski * therefore it has been loaded into imm_a(). 7019a90c83cSJakub Kicinski */ 7029a90c83cSJakub Kicinski if (first || !new_gpr) 703a82b23fbSJakub Kicinski wrp_mov(nfp_prog, reg, reg_lm(0, idx)); 704a82b23fbSJakub Kicinski } 705a82b23fbSJakub Kicinski 706a82b23fbSJakub Kicinski emit_ld_field_any(nfp_prog, reg_both(dst), mask, reg, sc, shf, new_gpr); 707a82b23fbSJakub Kicinski 7082df03a50SJakub Kicinski if (should_inc) 7092df03a50SJakub Kicinski wrp_mov(nfp_prog, reg_none(), reg_lm_inc(3)); 7102df03a50SJakub Kicinski 711a82b23fbSJakub Kicinski return 0; 712a82b23fbSJakub Kicinski } 713ee9133a8SJakub Kicinski 714ee9133a8SJakub Kicinski static int 715ee9133a8SJakub Kicinski wrp_lmem_store(struct nfp_prog *nfp_prog, u8 src, u8 src_byte, s32 off, 7162df03a50SJakub Kicinski unsigned int size, bool first, bool new_gpr, bool last, bool lm3, 7172df03a50SJakub Kicinski bool needs_inc) 718ee9133a8SJakub Kicinski { 7192df03a50SJakub Kicinski bool should_inc = needs_inc && new_gpr && !last; 720ee9133a8SJakub Kicinski u32 idx, dst_byte; 721ee9133a8SJakub Kicinski enum shf_sc sc; 722ee9133a8SJakub Kicinski swreg reg; 723ee9133a8SJakub Kicinski int shf; 724ee9133a8SJakub Kicinski u8 mask; 725ee9133a8SJakub Kicinski 726ee9133a8SJakub Kicinski if (WARN_ON_ONCE(src_byte + size > 4 || off % 4 + size > 4)) 727ee9133a8SJakub Kicinski return -EOPNOTSUPP; 728ee9133a8SJakub Kicinski 729ee9133a8SJakub Kicinski idx = off / 4; 730ee9133a8SJakub Kicinski 731ee9133a8SJakub Kicinski /* Move the entire word */ 732ee9133a8SJakub Kicinski if (size == 4) { 7332df03a50SJakub Kicinski wrp_mov(nfp_prog, 7342df03a50SJakub Kicinski should_inc ? reg_lm_inc(3) : reg_lm(lm3 ? 3 : 0, idx), 7352df03a50SJakub Kicinski reg_b(src)); 736ee9133a8SJakub Kicinski return 0; 737ee9133a8SJakub Kicinski } 738ee9133a8SJakub Kicinski 7392df03a50SJakub Kicinski if (WARN_ON_ONCE(lm3 && idx > RE_REG_LM_IDX_MAX)) 7402df03a50SJakub Kicinski return -EOPNOTSUPP; 7412df03a50SJakub Kicinski 742ee9133a8SJakub Kicinski dst_byte = off % 4; 743ee9133a8SJakub Kicinski 744ee9133a8SJakub Kicinski mask = (1 << size) - 1; 745ee9133a8SJakub Kicinski mask <<= dst_byte; 746ee9133a8SJakub Kicinski 747ee9133a8SJakub Kicinski if (WARN_ON_ONCE(mask > 0xf)) 748ee9133a8SJakub Kicinski return -EOPNOTSUPP; 749ee9133a8SJakub Kicinski 750ee9133a8SJakub Kicinski shf = abs(src_byte - dst_byte) * 8; 751ee9133a8SJakub Kicinski if (src_byte == dst_byte) { 752ee9133a8SJakub Kicinski sc = SHF_SC_NONE; 753ee9133a8SJakub Kicinski } else if (src_byte < dst_byte) { 754ee9133a8SJakub Kicinski shf = 32 - shf; 755ee9133a8SJakub Kicinski sc = SHF_SC_L_SHF; 756ee9133a8SJakub Kicinski } else { 757ee9133a8SJakub Kicinski sc = SHF_SC_R_SHF; 758ee9133a8SJakub Kicinski } 759ee9133a8SJakub Kicinski 760ee9133a8SJakub Kicinski /* ld_field can address fewer indexes, if offset too large do RMW. 761ee9133a8SJakub Kicinski * Because we RMV twice we waste 2 cycles on unaligned 8 byte writes. 762ee9133a8SJakub Kicinski */ 763ee9133a8SJakub Kicinski if (idx <= RE_REG_LM_IDX_MAX) { 7642df03a50SJakub Kicinski reg = reg_lm(lm3 ? 3 : 0, idx); 765ee9133a8SJakub Kicinski } else { 766ee9133a8SJakub Kicinski reg = imm_a(nfp_prog); 7679a90c83cSJakub Kicinski /* Only first and last LMEM locations are going to need RMW, 7689a90c83cSJakub Kicinski * the middle location will be overwritten fully. 7699a90c83cSJakub Kicinski */ 7709a90c83cSJakub Kicinski if (first || last) 771ee9133a8SJakub Kicinski wrp_mov(nfp_prog, reg, reg_lm(0, idx)); 772ee9133a8SJakub Kicinski } 773ee9133a8SJakub Kicinski 774ee9133a8SJakub Kicinski emit_ld_field(nfp_prog, reg, mask, reg_b(src), sc, shf); 775ee9133a8SJakub Kicinski 7769a90c83cSJakub Kicinski if (new_gpr || last) { 777ee9133a8SJakub Kicinski if (idx > RE_REG_LM_IDX_MAX) 778ee9133a8SJakub Kicinski wrp_mov(nfp_prog, reg_lm(0, idx), reg); 7792df03a50SJakub Kicinski if (should_inc) 7802df03a50SJakub Kicinski wrp_mov(nfp_prog, reg_none(), reg_lm_inc(3)); 7819a90c83cSJakub Kicinski } 782ee9133a8SJakub Kicinski 783ee9133a8SJakub Kicinski return 0; 784ee9133a8SJakub Kicinski } 785ee9133a8SJakub Kicinski 786ee9133a8SJakub Kicinski static int 787ee9133a8SJakub Kicinski mem_op_stack(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 788b14157eeSJakub Kicinski unsigned int size, unsigned int ptr_off, u8 gpr, u8 ptr_gpr, 789b14157eeSJakub Kicinski bool clr_gpr, lmem_step step) 790ee9133a8SJakub Kicinski { 791d3488480SJakub Kicinski s32 off = nfp_prog->stack_depth + meta->insn.off + ptr_off; 7929a90c83cSJakub Kicinski bool first = true, last; 7932df03a50SJakub Kicinski bool needs_inc = false; 7942df03a50SJakub Kicinski swreg stack_off_reg; 795a82b23fbSJakub Kicinski u8 prev_gpr = 255; 796ee9133a8SJakub Kicinski u32 gpr_byte = 0; 7972df03a50SJakub Kicinski bool lm3 = true; 798ee9133a8SJakub Kicinski int ret; 799ee9133a8SJakub Kicinski 800b14157eeSJakub Kicinski if (meta->ptr_not_const) { 801b14157eeSJakub Kicinski /* Use of the last encountered ptr_off is OK, they all have 802b14157eeSJakub Kicinski * the same alignment. Depend on low bits of value being 803b14157eeSJakub Kicinski * discarded when written to LMaddr register. 804b14157eeSJakub Kicinski */ 805b14157eeSJakub Kicinski stack_off_reg = ur_load_imm_any(nfp_prog, meta->insn.off, 806b14157eeSJakub Kicinski stack_imm(nfp_prog)); 807b14157eeSJakub Kicinski 808b14157eeSJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), 809b14157eeSJakub Kicinski reg_a(ptr_gpr), ALU_OP_ADD, stack_off_reg); 810b14157eeSJakub Kicinski 811b14157eeSJakub Kicinski needs_inc = true; 812b14157eeSJakub Kicinski } else if (off + size <= 64) { 8132df03a50SJakub Kicinski /* We can reach bottom 64B with LMaddr0 */ 8142df03a50SJakub Kicinski lm3 = false; 8152df03a50SJakub Kicinski } else if (round_down(off, 32) == round_down(off + size - 1, 32)) { 8162df03a50SJakub Kicinski /* We have to set up a new pointer. If we know the offset 8172df03a50SJakub Kicinski * and the entire access falls into a single 32 byte aligned 8182df03a50SJakub Kicinski * window we won't have to increment the LM pointer. 8192df03a50SJakub Kicinski * The 32 byte alignment is imporant because offset is ORed in 8202df03a50SJakub Kicinski * not added when doing *l$indexN[off]. 8212df03a50SJakub Kicinski */ 8222df03a50SJakub Kicinski stack_off_reg = ur_load_imm_any(nfp_prog, round_down(off, 32), 8232df03a50SJakub Kicinski stack_imm(nfp_prog)); 8242df03a50SJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), 8252df03a50SJakub Kicinski stack_reg(nfp_prog), ALU_OP_ADD, stack_off_reg); 8262df03a50SJakub Kicinski 8272df03a50SJakub Kicinski off %= 32; 8282df03a50SJakub Kicinski } else { 8292df03a50SJakub Kicinski stack_off_reg = ur_load_imm_any(nfp_prog, round_down(off, 4), 8302df03a50SJakub Kicinski stack_imm(nfp_prog)); 8312df03a50SJakub Kicinski 8322df03a50SJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), 8332df03a50SJakub Kicinski stack_reg(nfp_prog), ALU_OP_ADD, stack_off_reg); 8342df03a50SJakub Kicinski 8352df03a50SJakub Kicinski needs_inc = true; 8362df03a50SJakub Kicinski } 8372df03a50SJakub Kicinski if (lm3) { 8382df03a50SJakub Kicinski emit_csr_wr(nfp_prog, imm_b(nfp_prog), NFP_CSR_ACT_LM_ADDR3); 8392df03a50SJakub Kicinski /* For size < 4 one slot will be filled by zeroing of upper. */ 8402df03a50SJakub Kicinski wrp_nops(nfp_prog, clr_gpr && size < 8 ? 2 : 3); 8412df03a50SJakub Kicinski } 8422df03a50SJakub Kicinski 843a82b23fbSJakub Kicinski if (clr_gpr && size < 8) 844a82b23fbSJakub Kicinski wrp_immed(nfp_prog, reg_both(gpr + 1), 0); 845a82b23fbSJakub Kicinski 846ee9133a8SJakub Kicinski while (size) { 847ee9133a8SJakub Kicinski u32 slice_end; 848ee9133a8SJakub Kicinski u8 slice_size; 849ee9133a8SJakub Kicinski 850ee9133a8SJakub Kicinski slice_size = min(size, 4 - gpr_byte); 851ee9133a8SJakub Kicinski slice_end = min(off + slice_size, round_up(off + 1, 4)); 852ee9133a8SJakub Kicinski slice_size = slice_end - off; 853ee9133a8SJakub Kicinski 8549a90c83cSJakub Kicinski last = slice_size == size; 8559a90c83cSJakub Kicinski 8562df03a50SJakub Kicinski if (needs_inc) 8572df03a50SJakub Kicinski off %= 4; 8582df03a50SJakub Kicinski 859a82b23fbSJakub Kicinski ret = step(nfp_prog, gpr, gpr_byte, off, slice_size, 8602df03a50SJakub Kicinski first, gpr != prev_gpr, last, lm3, needs_inc); 861ee9133a8SJakub Kicinski if (ret) 862ee9133a8SJakub Kicinski return ret; 863ee9133a8SJakub Kicinski 864a82b23fbSJakub Kicinski prev_gpr = gpr; 8659a90c83cSJakub Kicinski first = false; 8669a90c83cSJakub Kicinski 867ee9133a8SJakub Kicinski gpr_byte += slice_size; 868ee9133a8SJakub Kicinski if (gpr_byte >= 4) { 869ee9133a8SJakub Kicinski gpr_byte -= 4; 870ee9133a8SJakub Kicinski gpr++; 871ee9133a8SJakub Kicinski } 872ee9133a8SJakub Kicinski 873ee9133a8SJakub Kicinski size -= slice_size; 874ee9133a8SJakub Kicinski off += slice_size; 875ee9133a8SJakub Kicinski } 876ee9133a8SJakub Kicinski 877ee9133a8SJakub Kicinski return 0; 878ee9133a8SJakub Kicinski } 879ee9133a8SJakub Kicinski 880d9ae7f2bSJakub Kicinski static void 881d9ae7f2bSJakub Kicinski wrp_alu_imm(struct nfp_prog *nfp_prog, u8 dst, enum alu_op alu_op, u32 imm) 882d9ae7f2bSJakub Kicinski { 883b3f868dfSJakub Kicinski swreg tmp_reg; 884d9ae7f2bSJakub Kicinski 885d9ae7f2bSJakub Kicinski if (alu_op == ALU_OP_AND) { 886d9ae7f2bSJakub Kicinski if (!imm) 887d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), 0); 888d9ae7f2bSJakub Kicinski if (!imm || !~imm) 889d9ae7f2bSJakub Kicinski return; 890d9ae7f2bSJakub Kicinski } 891d9ae7f2bSJakub Kicinski if (alu_op == ALU_OP_OR) { 892d9ae7f2bSJakub Kicinski if (!~imm) 893d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), ~0U); 894d9ae7f2bSJakub Kicinski if (!imm || !~imm) 895d9ae7f2bSJakub Kicinski return; 896d9ae7f2bSJakub Kicinski } 897d9ae7f2bSJakub Kicinski if (alu_op == ALU_OP_XOR) { 898d9ae7f2bSJakub Kicinski if (!~imm) 899d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_none(), 9005d42ced1SJiong Wang ALU_OP_NOT, reg_b(dst)); 901d9ae7f2bSJakub Kicinski if (!imm || !~imm) 902d9ae7f2bSJakub Kicinski return; 903d9ae7f2bSJakub Kicinski } 904d9ae7f2bSJakub Kicinski 905d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm, imm_b(nfp_prog)); 906d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_a(dst), alu_op, tmp_reg); 907d9ae7f2bSJakub Kicinski } 908d9ae7f2bSJakub Kicinski 909d9ae7f2bSJakub Kicinski static int 910d9ae7f2bSJakub Kicinski wrp_alu64_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 911d9ae7f2bSJakub Kicinski enum alu_op alu_op, bool skip) 912d9ae7f2bSJakub Kicinski { 913d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 914d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 915d9ae7f2bSJakub Kicinski 916d9ae7f2bSJakub Kicinski if (skip) { 917d9ae7f2bSJakub Kicinski meta->skip = true; 918d9ae7f2bSJakub Kicinski return 0; 919d9ae7f2bSJakub Kicinski } 920d9ae7f2bSJakub Kicinski 921d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, alu_op, imm & ~0U); 922d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2 + 1, alu_op, imm >> 32); 923d9ae7f2bSJakub Kicinski 924d9ae7f2bSJakub Kicinski return 0; 925d9ae7f2bSJakub Kicinski } 926d9ae7f2bSJakub Kicinski 927d9ae7f2bSJakub Kicinski static int 928d9ae7f2bSJakub Kicinski wrp_alu64_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 929d9ae7f2bSJakub Kicinski enum alu_op alu_op) 930d9ae7f2bSJakub Kicinski { 931d9ae7f2bSJakub Kicinski u8 dst = meta->insn.dst_reg * 2, src = meta->insn.src_reg * 2; 932d9ae7f2bSJakub Kicinski 933d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_a(dst), alu_op, reg_b(src)); 934d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst + 1), 935d9ae7f2bSJakub Kicinski reg_a(dst + 1), alu_op, reg_b(src + 1)); 936d9ae7f2bSJakub Kicinski 937d9ae7f2bSJakub Kicinski return 0; 938d9ae7f2bSJakub Kicinski } 939d9ae7f2bSJakub Kicinski 940d9ae7f2bSJakub Kicinski static int 941d9ae7f2bSJakub Kicinski wrp_alu32_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 942d9ae7f2bSJakub Kicinski enum alu_op alu_op, bool skip) 943d9ae7f2bSJakub Kicinski { 944d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 945d9ae7f2bSJakub Kicinski 946d9ae7f2bSJakub Kicinski if (skip) { 947d9ae7f2bSJakub Kicinski meta->skip = true; 948d9ae7f2bSJakub Kicinski return 0; 949d9ae7f2bSJakub Kicinski } 950d9ae7f2bSJakub Kicinski 951d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, alu_op, insn->imm); 952d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 953d9ae7f2bSJakub Kicinski 954d9ae7f2bSJakub Kicinski return 0; 955d9ae7f2bSJakub Kicinski } 956d9ae7f2bSJakub Kicinski 957d9ae7f2bSJakub Kicinski static int 958d9ae7f2bSJakub Kicinski wrp_alu32_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 959d9ae7f2bSJakub Kicinski enum alu_op alu_op) 960d9ae7f2bSJakub Kicinski { 961d9ae7f2bSJakub Kicinski u8 dst = meta->insn.dst_reg * 2, src = meta->insn.src_reg * 2; 962d9ae7f2bSJakub Kicinski 963d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), reg_a(dst), alu_op, reg_b(src)); 964d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 965d9ae7f2bSJakub Kicinski 966d9ae7f2bSJakub Kicinski return 0; 967d9ae7f2bSJakub Kicinski } 968d9ae7f2bSJakub Kicinski 969d9ae7f2bSJakub Kicinski static void 970d9ae7f2bSJakub Kicinski wrp_test_reg_one(struct nfp_prog *nfp_prog, u8 dst, enum alu_op alu_op, u8 src, 971d9ae7f2bSJakub Kicinski enum br_mask br_mask, u16 off) 972d9ae7f2bSJakub Kicinski { 973d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(dst), alu_op, reg_b(src)); 974d9ae7f2bSJakub Kicinski emit_br(nfp_prog, br_mask, off, 0); 975d9ae7f2bSJakub Kicinski } 976d9ae7f2bSJakub Kicinski 977d9ae7f2bSJakub Kicinski static int 978d9ae7f2bSJakub Kicinski wrp_test_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 979d9ae7f2bSJakub Kicinski enum alu_op alu_op, enum br_mask br_mask) 980d9ae7f2bSJakub Kicinski { 981d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 982d9ae7f2bSJakub Kicinski 983d9ae7f2bSJakub Kicinski wrp_test_reg_one(nfp_prog, insn->dst_reg * 2, alu_op, 984d9ae7f2bSJakub Kicinski insn->src_reg * 2, br_mask, insn->off); 985d9ae7f2bSJakub Kicinski wrp_test_reg_one(nfp_prog, insn->dst_reg * 2 + 1, alu_op, 986d9ae7f2bSJakub Kicinski insn->src_reg * 2 + 1, br_mask, insn->off); 987d9ae7f2bSJakub Kicinski 988d9ae7f2bSJakub Kicinski return 0; 989d9ae7f2bSJakub Kicinski } 990d9ae7f2bSJakub Kicinski 991d9ae7f2bSJakub Kicinski static int 992d9ae7f2bSJakub Kicinski wrp_cmp_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 993d9ae7f2bSJakub Kicinski enum br_mask br_mask, bool swap) 994d9ae7f2bSJakub Kicinski { 995d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 996d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 997d9ae7f2bSJakub Kicinski u8 reg = insn->dst_reg * 2; 998b3f868dfSJakub Kicinski swreg tmp_reg; 999d9ae7f2bSJakub Kicinski 1000d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 1001d9ae7f2bSJakub Kicinski if (!swap) 1002d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(reg), ALU_OP_SUB, tmp_reg); 1003d9ae7f2bSJakub Kicinski else 1004d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), tmp_reg, ALU_OP_SUB, reg_a(reg)); 1005d9ae7f2bSJakub Kicinski 1006d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 1007d9ae7f2bSJakub Kicinski if (!swap) 1008d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1009d9ae7f2bSJakub Kicinski reg_a(reg + 1), ALU_OP_SUB_C, tmp_reg); 1010d9ae7f2bSJakub Kicinski else 1011d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1012d9ae7f2bSJakub Kicinski tmp_reg, ALU_OP_SUB_C, reg_a(reg + 1)); 1013d9ae7f2bSJakub Kicinski 1014d9ae7f2bSJakub Kicinski emit_br(nfp_prog, br_mask, insn->off, 0); 1015d9ae7f2bSJakub Kicinski 1016d9ae7f2bSJakub Kicinski return 0; 1017d9ae7f2bSJakub Kicinski } 1018d9ae7f2bSJakub Kicinski 1019d9ae7f2bSJakub Kicinski static int 1020d9ae7f2bSJakub Kicinski wrp_cmp_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1021d9ae7f2bSJakub Kicinski enum br_mask br_mask, bool swap) 1022d9ae7f2bSJakub Kicinski { 1023d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 102426fa818dSJakub Kicinski u8 areg, breg; 102526fa818dSJakub Kicinski 102626fa818dSJakub Kicinski areg = insn->dst_reg * 2; 102726fa818dSJakub Kicinski breg = insn->src_reg * 2; 1028d9ae7f2bSJakub Kicinski 1029d9ae7f2bSJakub Kicinski if (swap) { 1030d9ae7f2bSJakub Kicinski areg ^= breg; 1031d9ae7f2bSJakub Kicinski breg ^= areg; 1032d9ae7f2bSJakub Kicinski areg ^= breg; 1033d9ae7f2bSJakub Kicinski } 1034d9ae7f2bSJakub Kicinski 1035d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(areg), ALU_OP_SUB, reg_b(breg)); 1036d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1037d9ae7f2bSJakub Kicinski reg_a(areg + 1), ALU_OP_SUB_C, reg_b(breg + 1)); 1038d9ae7f2bSJakub Kicinski emit_br(nfp_prog, br_mask, insn->off, 0); 1039d9ae7f2bSJakub Kicinski 1040d9ae7f2bSJakub Kicinski return 0; 1041d9ae7f2bSJakub Kicinski } 1042d9ae7f2bSJakub Kicinski 10433119d1fdSJakub Kicinski static void wrp_end32(struct nfp_prog *nfp_prog, swreg reg_in, u8 gpr_out) 10443119d1fdSJakub Kicinski { 10453119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr_out), 0xf, reg_in, 10463119d1fdSJakub Kicinski SHF_SC_R_ROT, 8); 10473119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr_out), 0x5, reg_a(gpr_out), 10483119d1fdSJakub Kicinski SHF_SC_R_ROT, 16); 10493119d1fdSJakub Kicinski } 10503119d1fdSJakub Kicinski 1051d9ae7f2bSJakub Kicinski /* --- Callbacks --- */ 1052d9ae7f2bSJakub Kicinski static int mov_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1053d9ae7f2bSJakub Kicinski { 1054d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1055b14157eeSJakub Kicinski u8 dst = insn->dst_reg * 2; 1056b14157eeSJakub Kicinski u8 src = insn->src_reg * 2; 1057d9ae7f2bSJakub Kicinski 1058b14157eeSJakub Kicinski if (insn->src_reg == BPF_REG_10) { 1059b14157eeSJakub Kicinski swreg stack_depth_reg; 1060b14157eeSJakub Kicinski 1061b14157eeSJakub Kicinski stack_depth_reg = ur_load_imm_any(nfp_prog, 1062b14157eeSJakub Kicinski nfp_prog->stack_depth, 1063b14157eeSJakub Kicinski stack_imm(nfp_prog)); 1064b14157eeSJakub Kicinski emit_alu(nfp_prog, reg_both(dst), 1065b14157eeSJakub Kicinski stack_reg(nfp_prog), ALU_OP_ADD, stack_depth_reg); 1066b14157eeSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst + 1), 0); 1067b14157eeSJakub Kicinski } else { 1068b14157eeSJakub Kicinski wrp_reg_mov(nfp_prog, dst, src); 1069b14157eeSJakub Kicinski wrp_reg_mov(nfp_prog, dst + 1, src + 1); 1070b14157eeSJakub Kicinski } 1071d9ae7f2bSJakub Kicinski 1072d9ae7f2bSJakub Kicinski return 0; 1073d9ae7f2bSJakub Kicinski } 1074d9ae7f2bSJakub Kicinski 1075d9ae7f2bSJakub Kicinski static int mov_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1076d9ae7f2bSJakub Kicinski { 1077d9ae7f2bSJakub Kicinski u64 imm = meta->insn.imm; /* sign extend */ 1078d9ae7f2bSJakub Kicinski 1079d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2), imm & ~0U); 1080d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), imm >> 32); 1081d9ae7f2bSJakub Kicinski 1082d9ae7f2bSJakub Kicinski return 0; 1083d9ae7f2bSJakub Kicinski } 1084d9ae7f2bSJakub Kicinski 1085d9ae7f2bSJakub Kicinski static int xor_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1086d9ae7f2bSJakub Kicinski { 1087d9ae7f2bSJakub Kicinski return wrp_alu64_reg(nfp_prog, meta, ALU_OP_XOR); 1088d9ae7f2bSJakub Kicinski } 1089d9ae7f2bSJakub Kicinski 1090d9ae7f2bSJakub Kicinski static int xor_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1091d9ae7f2bSJakub Kicinski { 1092d9ae7f2bSJakub Kicinski return wrp_alu64_imm(nfp_prog, meta, ALU_OP_XOR, !meta->insn.imm); 1093d9ae7f2bSJakub Kicinski } 1094d9ae7f2bSJakub Kicinski 1095d9ae7f2bSJakub Kicinski static int and_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1096d9ae7f2bSJakub Kicinski { 1097d9ae7f2bSJakub Kicinski return wrp_alu64_reg(nfp_prog, meta, ALU_OP_AND); 1098d9ae7f2bSJakub Kicinski } 1099d9ae7f2bSJakub Kicinski 1100d9ae7f2bSJakub Kicinski static int and_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1101d9ae7f2bSJakub Kicinski { 1102d9ae7f2bSJakub Kicinski return wrp_alu64_imm(nfp_prog, meta, ALU_OP_AND, !~meta->insn.imm); 1103d9ae7f2bSJakub Kicinski } 1104d9ae7f2bSJakub Kicinski 1105d9ae7f2bSJakub Kicinski static int or_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1106d9ae7f2bSJakub Kicinski { 1107d9ae7f2bSJakub Kicinski return wrp_alu64_reg(nfp_prog, meta, ALU_OP_OR); 1108d9ae7f2bSJakub Kicinski } 1109d9ae7f2bSJakub Kicinski 1110d9ae7f2bSJakub Kicinski static int or_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1111d9ae7f2bSJakub Kicinski { 1112d9ae7f2bSJakub Kicinski return wrp_alu64_imm(nfp_prog, meta, ALU_OP_OR, !meta->insn.imm); 1113d9ae7f2bSJakub Kicinski } 1114d9ae7f2bSJakub Kicinski 1115d9ae7f2bSJakub Kicinski static int add_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1116d9ae7f2bSJakub Kicinski { 1117d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1118d9ae7f2bSJakub Kicinski 1119d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2), 1120d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_ADD, 1121d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2)); 1122d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 1123d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_ADD_C, 1124d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2 + 1)); 1125d9ae7f2bSJakub Kicinski 1126d9ae7f2bSJakub Kicinski return 0; 1127d9ae7f2bSJakub Kicinski } 1128d9ae7f2bSJakub Kicinski 1129d9ae7f2bSJakub Kicinski static int add_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1130d9ae7f2bSJakub Kicinski { 1131d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1132d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1133d9ae7f2bSJakub Kicinski 1134d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, ALU_OP_ADD, imm & ~0U); 1135d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2 + 1, ALU_OP_ADD_C, imm >> 32); 1136d9ae7f2bSJakub Kicinski 1137d9ae7f2bSJakub Kicinski return 0; 1138d9ae7f2bSJakub Kicinski } 1139d9ae7f2bSJakub Kicinski 1140d9ae7f2bSJakub Kicinski static int sub_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1141d9ae7f2bSJakub Kicinski { 1142d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1143d9ae7f2bSJakub Kicinski 1144d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2), 1145d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_SUB, 1146d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2)); 1147d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 1148d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_SUB_C, 1149d9ae7f2bSJakub Kicinski reg_b(insn->src_reg * 2 + 1)); 1150d9ae7f2bSJakub Kicinski 1151d9ae7f2bSJakub Kicinski return 0; 1152d9ae7f2bSJakub Kicinski } 1153d9ae7f2bSJakub Kicinski 1154d9ae7f2bSJakub Kicinski static int sub_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1155d9ae7f2bSJakub Kicinski { 1156d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1157d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1158d9ae7f2bSJakub Kicinski 1159d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2, ALU_OP_SUB, imm & ~0U); 1160d9ae7f2bSJakub Kicinski wrp_alu_imm(nfp_prog, insn->dst_reg * 2 + 1, ALU_OP_SUB_C, imm >> 32); 1161d9ae7f2bSJakub Kicinski 1162d9ae7f2bSJakub Kicinski return 0; 1163d9ae7f2bSJakub Kicinski } 1164d9ae7f2bSJakub Kicinski 1165254ef4d7SJiong Wang static int neg_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1166254ef4d7SJiong Wang { 1167254ef4d7SJiong Wang const struct bpf_insn *insn = &meta->insn; 1168254ef4d7SJiong Wang 1169254ef4d7SJiong Wang emit_alu(nfp_prog, reg_both(insn->dst_reg * 2), reg_imm(0), 1170254ef4d7SJiong Wang ALU_OP_SUB, reg_b(insn->dst_reg * 2)); 1171254ef4d7SJiong Wang emit_alu(nfp_prog, reg_both(insn->dst_reg * 2 + 1), reg_imm(0), 1172254ef4d7SJiong Wang ALU_OP_SUB_C, reg_b(insn->dst_reg * 2 + 1)); 1173254ef4d7SJiong Wang 1174254ef4d7SJiong Wang return 0; 1175254ef4d7SJiong Wang } 1176254ef4d7SJiong Wang 1177d9ae7f2bSJakub Kicinski static int shl_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1178d9ae7f2bSJakub Kicinski { 1179d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 11803cae1319SJakub Kicinski u8 dst = insn->dst_reg * 2; 1181d9ae7f2bSJakub Kicinski 11823cae1319SJakub Kicinski if (insn->imm < 32) { 11833cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst + 1), 11843cae1319SJakub Kicinski reg_a(dst + 1), SHF_OP_NONE, reg_b(dst), 11853cae1319SJakub Kicinski SHF_SC_R_DSHF, 32 - insn->imm); 11863cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst), 11873cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst), 11883cae1319SJakub Kicinski SHF_SC_L_SHF, insn->imm); 11893cae1319SJakub Kicinski } else if (insn->imm == 32) { 11903cae1319SJakub Kicinski wrp_reg_mov(nfp_prog, dst + 1, dst); 11913cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), 0); 11923cae1319SJakub Kicinski } else if (insn->imm > 32) { 11933cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst + 1), 11943cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst), 11953cae1319SJakub Kicinski SHF_SC_L_SHF, insn->imm - 32); 11963cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), 0); 11973cae1319SJakub Kicinski } 1198d9ae7f2bSJakub Kicinski 1199d9ae7f2bSJakub Kicinski return 0; 1200d9ae7f2bSJakub Kicinski } 1201d9ae7f2bSJakub Kicinski 1202d9ae7f2bSJakub Kicinski static int shr_imm64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1203d9ae7f2bSJakub Kicinski { 1204d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 12053cae1319SJakub Kicinski u8 dst = insn->dst_reg * 2; 1206d9ae7f2bSJakub Kicinski 12073cae1319SJakub Kicinski if (insn->imm < 32) { 12083cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst), 12093cae1319SJakub Kicinski reg_a(dst + 1), SHF_OP_NONE, reg_b(dst), 12103cae1319SJakub Kicinski SHF_SC_R_DSHF, insn->imm); 12113cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst + 1), 12123cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst + 1), 12133cae1319SJakub Kicinski SHF_SC_R_SHF, insn->imm); 12143cae1319SJakub Kicinski } else if (insn->imm == 32) { 12153cae1319SJakub Kicinski wrp_reg_mov(nfp_prog, dst, dst + 1); 12163cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst + 1), 0); 12173cae1319SJakub Kicinski } else if (insn->imm > 32) { 12183cae1319SJakub Kicinski emit_shf(nfp_prog, reg_both(dst), 12193cae1319SJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(dst + 1), 12203cae1319SJakub Kicinski SHF_SC_R_SHF, insn->imm - 32); 12213cae1319SJakub Kicinski wrp_immed(nfp_prog, reg_both(dst + 1), 0); 12223cae1319SJakub Kicinski } 1223d9ae7f2bSJakub Kicinski 1224d9ae7f2bSJakub Kicinski return 0; 1225d9ae7f2bSJakub Kicinski } 1226d9ae7f2bSJakub Kicinski 1227d9ae7f2bSJakub Kicinski static int mov_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1228d9ae7f2bSJakub Kicinski { 1229d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1230d9ae7f2bSJakub Kicinski 1231d9ae7f2bSJakub Kicinski wrp_reg_mov(nfp_prog, insn->dst_reg * 2, insn->src_reg * 2); 1232d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 1233d9ae7f2bSJakub Kicinski 1234d9ae7f2bSJakub Kicinski return 0; 1235d9ae7f2bSJakub Kicinski } 1236d9ae7f2bSJakub Kicinski 1237d9ae7f2bSJakub Kicinski static int mov_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1238d9ae7f2bSJakub Kicinski { 1239d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1240d9ae7f2bSJakub Kicinski 1241d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2), insn->imm); 1242d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 1243d9ae7f2bSJakub Kicinski 1244d9ae7f2bSJakub Kicinski return 0; 1245d9ae7f2bSJakub Kicinski } 1246d9ae7f2bSJakub Kicinski 1247d9ae7f2bSJakub Kicinski static int xor_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1248d9ae7f2bSJakub Kicinski { 1249d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_XOR); 1250d9ae7f2bSJakub Kicinski } 1251d9ae7f2bSJakub Kicinski 1252d9ae7f2bSJakub Kicinski static int xor_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1253d9ae7f2bSJakub Kicinski { 1254d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_XOR, !~meta->insn.imm); 1255d9ae7f2bSJakub Kicinski } 1256d9ae7f2bSJakub Kicinski 1257d9ae7f2bSJakub Kicinski static int and_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1258d9ae7f2bSJakub Kicinski { 1259d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_AND); 1260d9ae7f2bSJakub Kicinski } 1261d9ae7f2bSJakub Kicinski 1262d9ae7f2bSJakub Kicinski static int and_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1263d9ae7f2bSJakub Kicinski { 1264d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_AND, !~meta->insn.imm); 1265d9ae7f2bSJakub Kicinski } 1266d9ae7f2bSJakub Kicinski 1267d9ae7f2bSJakub Kicinski static int or_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1268d9ae7f2bSJakub Kicinski { 1269d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_OR); 1270d9ae7f2bSJakub Kicinski } 1271d9ae7f2bSJakub Kicinski 1272d9ae7f2bSJakub Kicinski static int or_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1273d9ae7f2bSJakub Kicinski { 1274d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_OR, !meta->insn.imm); 1275d9ae7f2bSJakub Kicinski } 1276d9ae7f2bSJakub Kicinski 1277d9ae7f2bSJakub Kicinski static int add_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1278d9ae7f2bSJakub Kicinski { 1279d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_ADD); 1280d9ae7f2bSJakub Kicinski } 1281d9ae7f2bSJakub Kicinski 1282d9ae7f2bSJakub Kicinski static int add_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1283d9ae7f2bSJakub Kicinski { 1284d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_ADD, !meta->insn.imm); 1285d9ae7f2bSJakub Kicinski } 1286d9ae7f2bSJakub Kicinski 1287d9ae7f2bSJakub Kicinski static int sub_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1288d9ae7f2bSJakub Kicinski { 1289d9ae7f2bSJakub Kicinski return wrp_alu32_reg(nfp_prog, meta, ALU_OP_SUB); 1290d9ae7f2bSJakub Kicinski } 1291d9ae7f2bSJakub Kicinski 1292d9ae7f2bSJakub Kicinski static int sub_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1293d9ae7f2bSJakub Kicinski { 1294d9ae7f2bSJakub Kicinski return wrp_alu32_imm(nfp_prog, meta, ALU_OP_SUB, !meta->insn.imm); 1295d9ae7f2bSJakub Kicinski } 1296d9ae7f2bSJakub Kicinski 1297254ef4d7SJiong Wang static int neg_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1298254ef4d7SJiong Wang { 1299254ef4d7SJiong Wang u8 dst = meta->insn.dst_reg * 2; 1300254ef4d7SJiong Wang 1301254ef4d7SJiong Wang emit_alu(nfp_prog, reg_both(dst), reg_imm(0), ALU_OP_SUB, reg_b(dst)); 1302254ef4d7SJiong Wang wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 1303254ef4d7SJiong Wang 1304254ef4d7SJiong Wang return 0; 1305254ef4d7SJiong Wang } 1306254ef4d7SJiong Wang 1307d9ae7f2bSJakub Kicinski static int shl_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1308d9ae7f2bSJakub Kicinski { 1309d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1310d9ae7f2bSJakub Kicinski 1311d9ae7f2bSJakub Kicinski if (!insn->imm) 1312d9ae7f2bSJakub Kicinski return 1; /* TODO: zero shift means indirect */ 1313d9ae7f2bSJakub Kicinski 1314d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_both(insn->dst_reg * 2), 1315d9ae7f2bSJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(insn->dst_reg * 2), 1316d9ae7f2bSJakub Kicinski SHF_SC_L_SHF, insn->imm); 1317d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_both(insn->dst_reg * 2 + 1), 0); 1318d9ae7f2bSJakub Kicinski 1319d9ae7f2bSJakub Kicinski return 0; 1320d9ae7f2bSJakub Kicinski } 1321d9ae7f2bSJakub Kicinski 13223119d1fdSJakub Kicinski static int end_reg32(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 13233119d1fdSJakub Kicinski { 13243119d1fdSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 13253119d1fdSJakub Kicinski u8 gpr = insn->dst_reg * 2; 13263119d1fdSJakub Kicinski 13273119d1fdSJakub Kicinski switch (insn->imm) { 13283119d1fdSJakub Kicinski case 16: 13293119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr), 0x9, reg_b(gpr), 13303119d1fdSJakub Kicinski SHF_SC_R_ROT, 8); 13313119d1fdSJakub Kicinski emit_ld_field(nfp_prog, reg_both(gpr), 0xe, reg_a(gpr), 13323119d1fdSJakub Kicinski SHF_SC_R_SHF, 16); 13333119d1fdSJakub Kicinski 13343119d1fdSJakub Kicinski wrp_immed(nfp_prog, reg_both(gpr + 1), 0); 13353119d1fdSJakub Kicinski break; 13363119d1fdSJakub Kicinski case 32: 13373119d1fdSJakub Kicinski wrp_end32(nfp_prog, reg_a(gpr), gpr); 13383119d1fdSJakub Kicinski wrp_immed(nfp_prog, reg_both(gpr + 1), 0); 13393119d1fdSJakub Kicinski break; 13403119d1fdSJakub Kicinski case 64: 13413119d1fdSJakub Kicinski wrp_mov(nfp_prog, imm_a(nfp_prog), reg_b(gpr + 1)); 13423119d1fdSJakub Kicinski 13433119d1fdSJakub Kicinski wrp_end32(nfp_prog, reg_a(gpr), gpr + 1); 13443119d1fdSJakub Kicinski wrp_end32(nfp_prog, imm_a(nfp_prog), gpr); 13453119d1fdSJakub Kicinski break; 13463119d1fdSJakub Kicinski } 13473119d1fdSJakub Kicinski 13483119d1fdSJakub Kicinski return 0; 13493119d1fdSJakub Kicinski } 13503119d1fdSJakub Kicinski 1351d9ae7f2bSJakub Kicinski static int imm_ld8_part2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1352d9ae7f2bSJakub Kicinski { 13539f16c8abSJakub Kicinski struct nfp_insn_meta *prev = nfp_meta_prev(meta); 13549f16c8abSJakub Kicinski u32 imm_lo, imm_hi; 13559f16c8abSJakub Kicinski u8 dst; 13569f16c8abSJakub Kicinski 13579f16c8abSJakub Kicinski dst = prev->insn.dst_reg * 2; 13589f16c8abSJakub Kicinski imm_lo = prev->insn.imm; 13599f16c8abSJakub Kicinski imm_hi = meta->insn.imm; 13609f16c8abSJakub Kicinski 13619f16c8abSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst), imm_lo); 13629f16c8abSJakub Kicinski 13639f16c8abSJakub Kicinski /* mov is always 1 insn, load imm may be two, so try to use mov */ 13649f16c8abSJakub Kicinski if (imm_hi == imm_lo) 13659f16c8abSJakub Kicinski wrp_mov(nfp_prog, reg_both(dst + 1), reg_a(dst)); 13669f16c8abSJakub Kicinski else 13679f16c8abSJakub Kicinski wrp_immed(nfp_prog, reg_both(dst + 1), imm_hi); 1368d9ae7f2bSJakub Kicinski 1369d9ae7f2bSJakub Kicinski return 0; 1370d9ae7f2bSJakub Kicinski } 1371d9ae7f2bSJakub Kicinski 1372d9ae7f2bSJakub Kicinski static int imm_ld8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1373d9ae7f2bSJakub Kicinski { 1374d9ae7f2bSJakub Kicinski meta->double_cb = imm_ld8_part2; 1375d9ae7f2bSJakub Kicinski return 0; 1376d9ae7f2bSJakub Kicinski } 1377d9ae7f2bSJakub Kicinski 1378d9ae7f2bSJakub Kicinski static int data_ld1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1379d9ae7f2bSJakub Kicinski { 1380d9ae7f2bSJakub Kicinski return construct_data_ld(nfp_prog, meta->insn.imm, 1); 1381d9ae7f2bSJakub Kicinski } 1382d9ae7f2bSJakub Kicinski 1383d9ae7f2bSJakub Kicinski static int data_ld2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1384d9ae7f2bSJakub Kicinski { 1385d9ae7f2bSJakub Kicinski return construct_data_ld(nfp_prog, meta->insn.imm, 2); 1386d9ae7f2bSJakub Kicinski } 1387d9ae7f2bSJakub Kicinski 1388d9ae7f2bSJakub Kicinski static int data_ld4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1389d9ae7f2bSJakub Kicinski { 1390d9ae7f2bSJakub Kicinski return construct_data_ld(nfp_prog, meta->insn.imm, 4); 1391d9ae7f2bSJakub Kicinski } 1392d9ae7f2bSJakub Kicinski 1393d9ae7f2bSJakub Kicinski static int data_ind_ld1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1394d9ae7f2bSJakub Kicinski { 1395d9ae7f2bSJakub Kicinski return construct_data_ind_ld(nfp_prog, meta->insn.imm, 13960a793977SJakub Kicinski meta->insn.src_reg * 2, 1); 1397d9ae7f2bSJakub Kicinski } 1398d9ae7f2bSJakub Kicinski 1399d9ae7f2bSJakub Kicinski static int data_ind_ld2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1400d9ae7f2bSJakub Kicinski { 1401d9ae7f2bSJakub Kicinski return construct_data_ind_ld(nfp_prog, meta->insn.imm, 14020a793977SJakub Kicinski meta->insn.src_reg * 2, 2); 1403d9ae7f2bSJakub Kicinski } 1404d9ae7f2bSJakub Kicinski 1405d9ae7f2bSJakub Kicinski static int data_ind_ld4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1406d9ae7f2bSJakub Kicinski { 1407d9ae7f2bSJakub Kicinski return construct_data_ind_ld(nfp_prog, meta->insn.imm, 14080a793977SJakub Kicinski meta->insn.src_reg * 2, 4); 1409d9ae7f2bSJakub Kicinski } 1410d9ae7f2bSJakub Kicinski 1411a82b23fbSJakub Kicinski static int 1412a82b23fbSJakub Kicinski mem_ldx_stack(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1413d3488480SJakub Kicinski unsigned int size, unsigned int ptr_off) 1414a82b23fbSJakub Kicinski { 1415d3488480SJakub Kicinski return mem_op_stack(nfp_prog, meta, size, ptr_off, 1416b14157eeSJakub Kicinski meta->insn.dst_reg * 2, meta->insn.src_reg * 2, 1417b14157eeSJakub Kicinski true, wrp_lmem_load); 1418a82b23fbSJakub Kicinski } 1419a82b23fbSJakub Kicinski 1420943c57b9SJakub Kicinski static int mem_ldx_skb(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1421943c57b9SJakub Kicinski u8 size) 1422d9ae7f2bSJakub Kicinski { 1423bfddbc8aSJakub Kicinski swreg dst = reg_both(meta->insn.dst_reg * 2); 1424bfddbc8aSJakub Kicinski 1425943c57b9SJakub Kicinski switch (meta->insn.off) { 1426c6c580d7SJakub Kicinski case offsetof(struct __sk_buff, len): 1427c6c580d7SJakub Kicinski if (size != FIELD_SIZEOF(struct __sk_buff, len)) 1428943c57b9SJakub Kicinski return -EOPNOTSUPP; 1429bfddbc8aSJakub Kicinski wrp_mov(nfp_prog, dst, plen_reg(nfp_prog)); 1430bfddbc8aSJakub Kicinski break; 1431c6c580d7SJakub Kicinski case offsetof(struct __sk_buff, data): 1432c6c580d7SJakub Kicinski if (size != FIELD_SIZEOF(struct __sk_buff, data)) 1433bfddbc8aSJakub Kicinski return -EOPNOTSUPP; 1434bfddbc8aSJakub Kicinski wrp_mov(nfp_prog, dst, pptr_reg(nfp_prog)); 1435bfddbc8aSJakub Kicinski break; 1436c6c580d7SJakub Kicinski case offsetof(struct __sk_buff, data_end): 1437c6c580d7SJakub Kicinski if (size != FIELD_SIZEOF(struct __sk_buff, data_end)) 1438bfddbc8aSJakub Kicinski return -EOPNOTSUPP; 1439bfddbc8aSJakub Kicinski emit_alu(nfp_prog, dst, 1440bfddbc8aSJakub Kicinski plen_reg(nfp_prog), ALU_OP_ADD, pptr_reg(nfp_prog)); 1441943c57b9SJakub Kicinski break; 1442943c57b9SJakub Kicinski default: 1443d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1444943c57b9SJakub Kicinski } 1445943c57b9SJakub Kicinski 1446943c57b9SJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 1447d9ae7f2bSJakub Kicinski 1448d9ae7f2bSJakub Kicinski return 0; 1449d9ae7f2bSJakub Kicinski } 1450d9ae7f2bSJakub Kicinski 1451943c57b9SJakub Kicinski static int mem_ldx_xdp(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1452943c57b9SJakub Kicinski u8 size) 1453d9ae7f2bSJakub Kicinski { 1454b3f868dfSJakub Kicinski swreg dst = reg_both(meta->insn.dst_reg * 2); 1455d9ae7f2bSJakub Kicinski 1456943c57b9SJakub Kicinski switch (meta->insn.off) { 1457c6c580d7SJakub Kicinski case offsetof(struct xdp_md, data): 1458c6c580d7SJakub Kicinski if (size != FIELD_SIZEOF(struct xdp_md, data)) 1459c6c580d7SJakub Kicinski return -EOPNOTSUPP; 1460c000dfb5SJakub Kicinski wrp_mov(nfp_prog, dst, pptr_reg(nfp_prog)); 1461943c57b9SJakub Kicinski break; 1462c6c580d7SJakub Kicinski case offsetof(struct xdp_md, data_end): 1463c6c580d7SJakub Kicinski if (size != FIELD_SIZEOF(struct xdp_md, data_end)) 1464c6c580d7SJakub Kicinski return -EOPNOTSUPP; 1465943c57b9SJakub Kicinski emit_alu(nfp_prog, dst, 1466943c57b9SJakub Kicinski plen_reg(nfp_prog), ALU_OP_ADD, pptr_reg(nfp_prog)); 1467943c57b9SJakub Kicinski break; 1468943c57b9SJakub Kicinski default: 1469943c57b9SJakub Kicinski return -EOPNOTSUPP; 1470943c57b9SJakub Kicinski } 1471d9ae7f2bSJakub Kicinski 1472943c57b9SJakub Kicinski wrp_immed(nfp_prog, reg_both(meta->insn.dst_reg * 2 + 1), 0); 1473d9ae7f2bSJakub Kicinski 1474d9ae7f2bSJakub Kicinski return 0; 1475d9ae7f2bSJakub Kicinski } 1476d9ae7f2bSJakub Kicinski 14772ca71441SJakub Kicinski static int 14782ca71441SJakub Kicinski mem_ldx_data(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 14792ca71441SJakub Kicinski unsigned int size) 14802ca71441SJakub Kicinski { 14812ca71441SJakub Kicinski swreg tmp_reg; 14822ca71441SJakub Kicinski 14832ca71441SJakub Kicinski tmp_reg = re_load_imm_any(nfp_prog, meta->insn.off, imm_b(nfp_prog)); 14842ca71441SJakub Kicinski 14852ca71441SJakub Kicinski return data_ld_host_order(nfp_prog, meta->insn.src_reg * 2, tmp_reg, 14862ca71441SJakub Kicinski meta->insn.dst_reg * 2, size); 14872ca71441SJakub Kicinski } 14882ca71441SJakub Kicinski 14892ca71441SJakub Kicinski static int 14902ca71441SJakub Kicinski mem_ldx(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 14912ca71441SJakub Kicinski unsigned int size) 14922ca71441SJakub Kicinski { 14932ca71441SJakub Kicinski if (meta->ptr.type == PTR_TO_CTX) { 1494012bb8a8SJakub Kicinski if (nfp_prog->type == BPF_PROG_TYPE_XDP) 14952ca71441SJakub Kicinski return mem_ldx_xdp(nfp_prog, meta, size); 14962ca71441SJakub Kicinski else 14972ca71441SJakub Kicinski return mem_ldx_skb(nfp_prog, meta, size); 14982ca71441SJakub Kicinski } 14992ca71441SJakub Kicinski 15002ca71441SJakub Kicinski if (meta->ptr.type == PTR_TO_PACKET) 15012ca71441SJakub Kicinski return mem_ldx_data(nfp_prog, meta, size); 15022ca71441SJakub Kicinski 1503a82b23fbSJakub Kicinski if (meta->ptr.type == PTR_TO_STACK) 1504d3488480SJakub Kicinski return mem_ldx_stack(nfp_prog, meta, size, 1505d3488480SJakub Kicinski meta->ptr.off + meta->ptr.var_off.value); 1506a82b23fbSJakub Kicinski 15072ca71441SJakub Kicinski return -EOPNOTSUPP; 15082ca71441SJakub Kicinski } 15092ca71441SJakub Kicinski 15102ca71441SJakub Kicinski static int mem_ldx1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 15112ca71441SJakub Kicinski { 15122ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 1); 15132ca71441SJakub Kicinski } 15142ca71441SJakub Kicinski 15152ca71441SJakub Kicinski static int mem_ldx2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 15162ca71441SJakub Kicinski { 15172ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 2); 15182ca71441SJakub Kicinski } 15192ca71441SJakub Kicinski 1520d9ae7f2bSJakub Kicinski static int mem_ldx4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1521d9ae7f2bSJakub Kicinski { 15222ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 4); 15232ca71441SJakub Kicinski } 15242ca71441SJakub Kicinski 15252ca71441SJakub Kicinski static int mem_ldx8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 15262ca71441SJakub Kicinski { 15272ca71441SJakub Kicinski return mem_ldx(nfp_prog, meta, 8); 1528d9ae7f2bSJakub Kicinski } 1529d9ae7f2bSJakub Kicinski 1530e663fe38SJakub Kicinski static int 1531e663fe38SJakub Kicinski mem_st_data(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1532e663fe38SJakub Kicinski unsigned int size) 1533d9ae7f2bSJakub Kicinski { 1534e663fe38SJakub Kicinski u64 imm = meta->insn.imm; /* sign extend */ 1535e663fe38SJakub Kicinski swreg off_reg; 1536e663fe38SJakub Kicinski 1537e663fe38SJakub Kicinski off_reg = re_load_imm_any(nfp_prog, meta->insn.off, imm_b(nfp_prog)); 1538e663fe38SJakub Kicinski 1539e663fe38SJakub Kicinski return data_st_host_order(nfp_prog, meta->insn.dst_reg * 2, off_reg, 1540e663fe38SJakub Kicinski imm, size); 1541e663fe38SJakub Kicinski } 1542e663fe38SJakub Kicinski 1543e663fe38SJakub Kicinski static int mem_st(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1544e663fe38SJakub Kicinski unsigned int size) 1545e663fe38SJakub Kicinski { 1546e663fe38SJakub Kicinski if (meta->ptr.type == PTR_TO_PACKET) 1547e663fe38SJakub Kicinski return mem_st_data(nfp_prog, meta, size); 1548e663fe38SJakub Kicinski 1549d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1550d9ae7f2bSJakub Kicinski } 1551d9ae7f2bSJakub Kicinski 1552e663fe38SJakub Kicinski static int mem_st1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1553d9ae7f2bSJakub Kicinski { 1554e663fe38SJakub Kicinski return mem_st(nfp_prog, meta, 1); 1555e663fe38SJakub Kicinski } 1556e663fe38SJakub Kicinski 1557e663fe38SJakub Kicinski static int mem_st2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1558e663fe38SJakub Kicinski { 1559e663fe38SJakub Kicinski return mem_st(nfp_prog, meta, 2); 1560e663fe38SJakub Kicinski } 1561e663fe38SJakub Kicinski 1562e663fe38SJakub Kicinski static int mem_st4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1563e663fe38SJakub Kicinski { 1564e663fe38SJakub Kicinski return mem_st(nfp_prog, meta, 4); 1565e663fe38SJakub Kicinski } 1566e663fe38SJakub Kicinski 1567e663fe38SJakub Kicinski static int mem_st8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1568e663fe38SJakub Kicinski { 1569e663fe38SJakub Kicinski return mem_st(nfp_prog, meta, 8); 1570e663fe38SJakub Kicinski } 1571e663fe38SJakub Kicinski 1572e663fe38SJakub Kicinski static int 1573e663fe38SJakub Kicinski mem_stx_data(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1574e663fe38SJakub Kicinski unsigned int size) 1575e663fe38SJakub Kicinski { 1576e663fe38SJakub Kicinski swreg off_reg; 1577e663fe38SJakub Kicinski 1578e663fe38SJakub Kicinski off_reg = re_load_imm_any(nfp_prog, meta->insn.off, imm_b(nfp_prog)); 1579e663fe38SJakub Kicinski 1580e663fe38SJakub Kicinski return data_stx_host_order(nfp_prog, meta->insn.dst_reg * 2, off_reg, 1581e663fe38SJakub Kicinski meta->insn.src_reg * 2, size); 1582e663fe38SJakub Kicinski } 1583e663fe38SJakub Kicinski 1584e663fe38SJakub Kicinski static int 1585ee9133a8SJakub Kicinski mem_stx_stack(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1586d3488480SJakub Kicinski unsigned int size, unsigned int ptr_off) 1587ee9133a8SJakub Kicinski { 1588d3488480SJakub Kicinski return mem_op_stack(nfp_prog, meta, size, ptr_off, 1589b14157eeSJakub Kicinski meta->insn.src_reg * 2, meta->insn.dst_reg * 2, 1590b14157eeSJakub Kicinski false, wrp_lmem_store); 1591ee9133a8SJakub Kicinski } 1592ee9133a8SJakub Kicinski 1593ee9133a8SJakub Kicinski static int 1594e663fe38SJakub Kicinski mem_stx(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 1595e663fe38SJakub Kicinski unsigned int size) 1596e663fe38SJakub Kicinski { 1597e663fe38SJakub Kicinski if (meta->ptr.type == PTR_TO_PACKET) 1598e663fe38SJakub Kicinski return mem_stx_data(nfp_prog, meta, size); 1599e663fe38SJakub Kicinski 1600ee9133a8SJakub Kicinski if (meta->ptr.type == PTR_TO_STACK) 1601d3488480SJakub Kicinski return mem_stx_stack(nfp_prog, meta, size, 1602d3488480SJakub Kicinski meta->ptr.off + meta->ptr.var_off.value); 1603ee9133a8SJakub Kicinski 1604d9ae7f2bSJakub Kicinski return -EOPNOTSUPP; 1605d9ae7f2bSJakub Kicinski } 1606d9ae7f2bSJakub Kicinski 1607e663fe38SJakub Kicinski static int mem_stx1(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1608e663fe38SJakub Kicinski { 1609e663fe38SJakub Kicinski return mem_stx(nfp_prog, meta, 1); 1610e663fe38SJakub Kicinski } 1611e663fe38SJakub Kicinski 1612e663fe38SJakub Kicinski static int mem_stx2(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1613e663fe38SJakub Kicinski { 1614e663fe38SJakub Kicinski return mem_stx(nfp_prog, meta, 2); 1615e663fe38SJakub Kicinski } 1616e663fe38SJakub Kicinski 1617d9ae7f2bSJakub Kicinski static int mem_stx4(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1618d9ae7f2bSJakub Kicinski { 1619e663fe38SJakub Kicinski return mem_stx(nfp_prog, meta, 4); 1620e663fe38SJakub Kicinski } 16212ca71441SJakub Kicinski 1622e663fe38SJakub Kicinski static int mem_stx8(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1623e663fe38SJakub Kicinski { 1624e663fe38SJakub Kicinski return mem_stx(nfp_prog, meta, 8); 1625d9ae7f2bSJakub Kicinski } 1626d9ae7f2bSJakub Kicinski 1627d9ae7f2bSJakub Kicinski static int jump(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1628d9ae7f2bSJakub Kicinski { 1629d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_UNC, meta->insn.off, 0); 1630d9ae7f2bSJakub Kicinski 1631d9ae7f2bSJakub Kicinski return 0; 1632d9ae7f2bSJakub Kicinski } 1633d9ae7f2bSJakub Kicinski 1634d9ae7f2bSJakub Kicinski static int jeq_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1635d9ae7f2bSJakub Kicinski { 1636d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1637d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1638b3f868dfSJakub Kicinski swreg or1, or2, tmp_reg; 1639b3f868dfSJakub Kicinski 1640b3f868dfSJakub Kicinski or1 = reg_a(insn->dst_reg * 2); 1641b3f868dfSJakub Kicinski or2 = reg_b(insn->dst_reg * 2 + 1); 1642d9ae7f2bSJakub Kicinski 1643d9ae7f2bSJakub Kicinski if (imm & ~0U) { 1644d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 1645d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_a(nfp_prog), 1646d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_XOR, tmp_reg); 1647d9ae7f2bSJakub Kicinski or1 = imm_a(nfp_prog); 1648d9ae7f2bSJakub Kicinski } 1649d9ae7f2bSJakub Kicinski 1650d9ae7f2bSJakub Kicinski if (imm >> 32) { 1651d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 1652d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), 1653d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_XOR, tmp_reg); 1654d9ae7f2bSJakub Kicinski or2 = imm_b(nfp_prog); 1655d9ae7f2bSJakub Kicinski } 1656d9ae7f2bSJakub Kicinski 1657d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), or1, ALU_OP_OR, or2); 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_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1664d9ae7f2bSJakub Kicinski { 166526fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BLO, true); 1666d9ae7f2bSJakub Kicinski } 1667d9ae7f2bSJakub Kicinski 1668d9ae7f2bSJakub Kicinski static int jge_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1669d9ae7f2bSJakub Kicinski { 167026fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BHS, false); 1671d9ae7f2bSJakub Kicinski } 1672d9ae7f2bSJakub Kicinski 16735dd294d4SDaniel Borkmann static int jlt_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 16745dd294d4SDaniel Borkmann { 167526fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BLO, false); 16765dd294d4SDaniel Borkmann } 16775dd294d4SDaniel Borkmann 16785dd294d4SDaniel Borkmann static int jle_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 16795dd294d4SDaniel Borkmann { 168026fa818dSJakub Kicinski return wrp_cmp_imm(nfp_prog, meta, BR_BHS, true); 16815dd294d4SDaniel Borkmann } 16825dd294d4SDaniel Borkmann 1683d9ae7f2bSJakub Kicinski static int jset_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1684d9ae7f2bSJakub Kicinski { 1685d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1686d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1687b3f868dfSJakub Kicinski swreg tmp_reg; 1688d9ae7f2bSJakub Kicinski 1689d9ae7f2bSJakub Kicinski if (!imm) { 1690d9ae7f2bSJakub Kicinski meta->skip = true; 1691d9ae7f2bSJakub Kicinski return 0; 1692d9ae7f2bSJakub Kicinski } 1693d9ae7f2bSJakub Kicinski 1694d9ae7f2bSJakub Kicinski if (imm & ~0U) { 1695d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 1696d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1697d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_AND, tmp_reg); 1698d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1699d9ae7f2bSJakub Kicinski } 1700d9ae7f2bSJakub Kicinski 1701d9ae7f2bSJakub Kicinski if (imm >> 32) { 1702d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 1703d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1704d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_AND, tmp_reg); 1705d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1706d9ae7f2bSJakub Kicinski } 1707d9ae7f2bSJakub Kicinski 1708d9ae7f2bSJakub Kicinski return 0; 1709d9ae7f2bSJakub Kicinski } 1710d9ae7f2bSJakub Kicinski 1711d9ae7f2bSJakub Kicinski static int jne_imm(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1712d9ae7f2bSJakub Kicinski { 1713d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1714d9ae7f2bSJakub Kicinski u64 imm = insn->imm; /* sign extend */ 1715b3f868dfSJakub Kicinski swreg tmp_reg; 1716d9ae7f2bSJakub Kicinski 1717d9ae7f2bSJakub Kicinski if (!imm) { 1718d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(insn->dst_reg * 2), 1719d9ae7f2bSJakub Kicinski ALU_OP_OR, reg_b(insn->dst_reg * 2 + 1)); 1720d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 172182837370SJakub Kicinski return 0; 1722d9ae7f2bSJakub Kicinski } 1723d9ae7f2bSJakub Kicinski 1724d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm & ~0U, imm_b(nfp_prog)); 1725d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1726d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2), ALU_OP_XOR, tmp_reg); 1727d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1728d9ae7f2bSJakub Kicinski 1729d9ae7f2bSJakub Kicinski tmp_reg = ur_load_imm_any(nfp_prog, imm >> 32, imm_b(nfp_prog)); 1730d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1731d9ae7f2bSJakub Kicinski reg_a(insn->dst_reg * 2 + 1), ALU_OP_XOR, tmp_reg); 1732d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BNE, insn->off, 0); 1733d9ae7f2bSJakub Kicinski 1734d9ae7f2bSJakub Kicinski return 0; 1735d9ae7f2bSJakub Kicinski } 1736d9ae7f2bSJakub Kicinski 1737d9ae7f2bSJakub Kicinski static int jeq_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1738d9ae7f2bSJakub Kicinski { 1739d9ae7f2bSJakub Kicinski const struct bpf_insn *insn = &meta->insn; 1740d9ae7f2bSJakub Kicinski 1741d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_a(nfp_prog), reg_a(insn->dst_reg * 2), 1742d9ae7f2bSJakub Kicinski ALU_OP_XOR, reg_b(insn->src_reg * 2)); 1743d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, imm_b(nfp_prog), reg_a(insn->dst_reg * 2 + 1), 1744d9ae7f2bSJakub Kicinski ALU_OP_XOR, reg_b(insn->src_reg * 2 + 1)); 1745d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), 1746d9ae7f2bSJakub Kicinski imm_a(nfp_prog), ALU_OP_OR, imm_b(nfp_prog)); 1747d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BEQ, insn->off, 0); 1748d9ae7f2bSJakub Kicinski 1749d9ae7f2bSJakub Kicinski return 0; 1750d9ae7f2bSJakub Kicinski } 1751d9ae7f2bSJakub Kicinski 1752d9ae7f2bSJakub Kicinski static int jgt_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1753d9ae7f2bSJakub Kicinski { 175426fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BLO, true); 1755d9ae7f2bSJakub Kicinski } 1756d9ae7f2bSJakub Kicinski 1757d9ae7f2bSJakub Kicinski static int jge_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1758d9ae7f2bSJakub Kicinski { 175926fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BHS, false); 1760d9ae7f2bSJakub Kicinski } 1761d9ae7f2bSJakub Kicinski 17625dd294d4SDaniel Borkmann static int jlt_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 17635dd294d4SDaniel Borkmann { 176426fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BLO, false); 17655dd294d4SDaniel Borkmann } 17665dd294d4SDaniel Borkmann 17675dd294d4SDaniel Borkmann static int jle_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 17685dd294d4SDaniel Borkmann { 176926fa818dSJakub Kicinski return wrp_cmp_reg(nfp_prog, meta, BR_BHS, true); 17705dd294d4SDaniel Borkmann } 17715dd294d4SDaniel Borkmann 1772d9ae7f2bSJakub Kicinski static int jset_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1773d9ae7f2bSJakub Kicinski { 1774d9ae7f2bSJakub Kicinski return wrp_test_reg(nfp_prog, meta, ALU_OP_AND, BR_BNE); 1775d9ae7f2bSJakub Kicinski } 1776d9ae7f2bSJakub Kicinski 1777d9ae7f2bSJakub Kicinski static int jne_reg(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1778d9ae7f2bSJakub Kicinski { 1779d9ae7f2bSJakub Kicinski return wrp_test_reg(nfp_prog, meta, ALU_OP_XOR, BR_BNE); 1780d9ae7f2bSJakub Kicinski } 1781d9ae7f2bSJakub Kicinski 1782d9ae7f2bSJakub Kicinski static int goto_out(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) 1783d9ae7f2bSJakub Kicinski { 1784d9ae7f2bSJakub Kicinski wrp_br_special(nfp_prog, BR_UNC, OP_BR_GO_OUT); 1785d9ae7f2bSJakub Kicinski 1786d9ae7f2bSJakub Kicinski return 0; 1787d9ae7f2bSJakub Kicinski } 1788d9ae7f2bSJakub Kicinski 1789d9ae7f2bSJakub Kicinski static const instr_cb_t instr_cb[256] = { 1790d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_MOV | BPF_X] = mov_reg64, 1791d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_MOV | BPF_K] = mov_imm64, 1792d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_XOR | BPF_X] = xor_reg64, 1793d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_XOR | BPF_K] = xor_imm64, 1794d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_AND | BPF_X] = and_reg64, 1795d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_AND | BPF_K] = and_imm64, 1796d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_OR | BPF_X] = or_reg64, 1797d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_OR | BPF_K] = or_imm64, 1798d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_ADD | BPF_X] = add_reg64, 1799d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_ADD | BPF_K] = add_imm64, 1800d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_SUB | BPF_X] = sub_reg64, 1801d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_SUB | BPF_K] = sub_imm64, 1802254ef4d7SJiong Wang [BPF_ALU64 | BPF_NEG] = neg_reg64, 1803d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_LSH | BPF_K] = shl_imm64, 1804d9ae7f2bSJakub Kicinski [BPF_ALU64 | BPF_RSH | BPF_K] = shr_imm64, 1805d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_MOV | BPF_X] = mov_reg, 1806d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_MOV | BPF_K] = mov_imm, 1807d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_XOR | BPF_X] = xor_reg, 1808d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_XOR | BPF_K] = xor_imm, 1809d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_AND | BPF_X] = and_reg, 1810d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_AND | BPF_K] = and_imm, 1811d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_OR | BPF_X] = or_reg, 1812d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_OR | BPF_K] = or_imm, 1813d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_ADD | BPF_X] = add_reg, 1814d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_ADD | BPF_K] = add_imm, 1815d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_SUB | BPF_X] = sub_reg, 1816d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_SUB | BPF_K] = sub_imm, 1817254ef4d7SJiong Wang [BPF_ALU | BPF_NEG] = neg_reg, 1818d9ae7f2bSJakub Kicinski [BPF_ALU | BPF_LSH | BPF_K] = shl_imm, 18193119d1fdSJakub Kicinski [BPF_ALU | BPF_END | BPF_X] = end_reg32, 1820d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IMM | BPF_DW] = imm_ld8, 1821d9ae7f2bSJakub Kicinski [BPF_LD | BPF_ABS | BPF_B] = data_ld1, 1822d9ae7f2bSJakub Kicinski [BPF_LD | BPF_ABS | BPF_H] = data_ld2, 1823d9ae7f2bSJakub Kicinski [BPF_LD | BPF_ABS | BPF_W] = data_ld4, 1824d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IND | BPF_B] = data_ind_ld1, 1825d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IND | BPF_H] = data_ind_ld2, 1826d9ae7f2bSJakub Kicinski [BPF_LD | BPF_IND | BPF_W] = data_ind_ld4, 18272ca71441SJakub Kicinski [BPF_LDX | BPF_MEM | BPF_B] = mem_ldx1, 18282ca71441SJakub Kicinski [BPF_LDX | BPF_MEM | BPF_H] = mem_ldx2, 1829d9ae7f2bSJakub Kicinski [BPF_LDX | BPF_MEM | BPF_W] = mem_ldx4, 18302ca71441SJakub Kicinski [BPF_LDX | BPF_MEM | BPF_DW] = mem_ldx8, 1831e663fe38SJakub Kicinski [BPF_STX | BPF_MEM | BPF_B] = mem_stx1, 1832e663fe38SJakub Kicinski [BPF_STX | BPF_MEM | BPF_H] = mem_stx2, 1833d9ae7f2bSJakub Kicinski [BPF_STX | BPF_MEM | BPF_W] = mem_stx4, 1834e663fe38SJakub Kicinski [BPF_STX | BPF_MEM | BPF_DW] = mem_stx8, 1835e663fe38SJakub Kicinski [BPF_ST | BPF_MEM | BPF_B] = mem_st1, 1836e663fe38SJakub Kicinski [BPF_ST | BPF_MEM | BPF_H] = mem_st2, 1837e663fe38SJakub Kicinski [BPF_ST | BPF_MEM | BPF_W] = mem_st4, 1838e663fe38SJakub Kicinski [BPF_ST | BPF_MEM | BPF_DW] = mem_st8, 1839d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JA | BPF_K] = jump, 1840d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JEQ | BPF_K] = jeq_imm, 1841d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGT | BPF_K] = jgt_imm, 1842d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGE | BPF_K] = jge_imm, 18435dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLT | BPF_K] = jlt_imm, 18445dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLE | BPF_K] = jle_imm, 1845d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JSET | BPF_K] = jset_imm, 1846d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JNE | BPF_K] = jne_imm, 1847d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JEQ | BPF_X] = jeq_reg, 1848d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGT | BPF_X] = jgt_reg, 1849d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JGE | BPF_X] = jge_reg, 18505dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLT | BPF_X] = jlt_reg, 18515dd294d4SDaniel Borkmann [BPF_JMP | BPF_JLE | BPF_X] = jle_reg, 1852d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JSET | BPF_X] = jset_reg, 1853d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_JNE | BPF_X] = jne_reg, 1854d9ae7f2bSJakub Kicinski [BPF_JMP | BPF_EXIT] = goto_out, 1855d9ae7f2bSJakub Kicinski }; 1856d9ae7f2bSJakub Kicinski 1857d9ae7f2bSJakub Kicinski /* --- Misc code --- */ 1858d9ae7f2bSJakub Kicinski static void br_set_offset(u64 *instr, u16 offset) 1859d9ae7f2bSJakub Kicinski { 1860d9ae7f2bSJakub Kicinski u16 addr_lo, addr_hi; 1861d9ae7f2bSJakub Kicinski 1862d9ae7f2bSJakub Kicinski addr_lo = offset & (OP_BR_ADDR_LO >> __bf_shf(OP_BR_ADDR_LO)); 1863d9ae7f2bSJakub Kicinski addr_hi = offset != addr_lo; 1864d9ae7f2bSJakub Kicinski *instr &= ~(OP_BR_ADDR_HI | OP_BR_ADDR_LO); 1865d9ae7f2bSJakub Kicinski *instr |= FIELD_PREP(OP_BR_ADDR_HI, addr_hi); 1866d9ae7f2bSJakub Kicinski *instr |= FIELD_PREP(OP_BR_ADDR_LO, addr_lo); 1867d9ae7f2bSJakub Kicinski } 1868d9ae7f2bSJakub Kicinski 1869d9ae7f2bSJakub Kicinski /* --- Assembler logic --- */ 1870d9ae7f2bSJakub Kicinski static int nfp_fixup_branches(struct nfp_prog *nfp_prog) 1871d9ae7f2bSJakub Kicinski { 18725b674140SJiong Wang struct nfp_insn_meta *meta, *jmp_dst; 1873854dc87dSJiong Wang u32 idx, br_idx; 1874d9ae7f2bSJakub Kicinski 1875854dc87dSJiong Wang list_for_each_entry(meta, &nfp_prog->insns, l) { 1876d9ae7f2bSJakub Kicinski if (meta->skip) 1877d9ae7f2bSJakub Kicinski continue; 1878d9ae7f2bSJakub Kicinski if (BPF_CLASS(meta->insn.code) != BPF_JMP) 1879d9ae7f2bSJakub Kicinski continue; 1880d9ae7f2bSJakub Kicinski 18815b674140SJiong Wang if (list_is_last(&meta->l, &nfp_prog->insns)) 1882854dc87dSJiong Wang idx = nfp_prog->last_bpf_off; 18835b674140SJiong Wang else 18845b674140SJiong Wang idx = list_next_entry(meta, l)->off - 1; 1885854dc87dSJiong Wang 1886854dc87dSJiong Wang br_idx = nfp_prog_offset_to_index(nfp_prog, idx); 1887854dc87dSJiong Wang 1888d9ae7f2bSJakub Kicinski if (!nfp_is_br(nfp_prog->prog[br_idx])) { 1889d9ae7f2bSJakub Kicinski pr_err("Fixup found block not ending in branch %d %02x %016llx!!\n", 1890d9ae7f2bSJakub Kicinski br_idx, meta->insn.code, nfp_prog->prog[br_idx]); 1891d9ae7f2bSJakub Kicinski return -ELOOP; 1892d9ae7f2bSJakub Kicinski } 1893d9ae7f2bSJakub Kicinski /* Leave special branches for later */ 1894d9ae7f2bSJakub Kicinski if (FIELD_GET(OP_BR_SPECIAL, nfp_prog->prog[br_idx])) 1895d9ae7f2bSJakub Kicinski continue; 1896d9ae7f2bSJakub Kicinski 18975b674140SJiong Wang if (!meta->jmp_dst) { 18985b674140SJiong Wang pr_err("Non-exit jump doesn't have destination info recorded!!\n"); 1899d9ae7f2bSJakub Kicinski return -ELOOP; 1900d9ae7f2bSJakub Kicinski } 1901d9ae7f2bSJakub Kicinski 19025b674140SJiong Wang jmp_dst = meta->jmp_dst; 1903854dc87dSJiong Wang 19045b674140SJiong Wang if (jmp_dst->skip) { 1905d9ae7f2bSJakub Kicinski pr_err("Branch landing on removed instruction!!\n"); 1906d9ae7f2bSJakub Kicinski return -ELOOP; 1907d9ae7f2bSJakub Kicinski } 1908d9ae7f2bSJakub Kicinski 1909d9ae7f2bSJakub Kicinski for (idx = nfp_prog_offset_to_index(nfp_prog, meta->off); 1910d9ae7f2bSJakub Kicinski idx <= br_idx; idx++) { 1911d9ae7f2bSJakub Kicinski if (!nfp_is_br(nfp_prog->prog[idx])) 1912d9ae7f2bSJakub Kicinski continue; 19135b674140SJiong Wang br_set_offset(&nfp_prog->prog[idx], jmp_dst->off); 1914d9ae7f2bSJakub Kicinski } 1915d9ae7f2bSJakub Kicinski } 1916d9ae7f2bSJakub Kicinski 1917d9ae7f2bSJakub Kicinski /* Fixup 'goto out's separately, they can be scattered around */ 1918d9ae7f2bSJakub Kicinski for (br_idx = 0; br_idx < nfp_prog->prog_len; br_idx++) { 1919d9ae7f2bSJakub Kicinski enum br_special special; 1920d9ae7f2bSJakub Kicinski 1921d9ae7f2bSJakub Kicinski if ((nfp_prog->prog[br_idx] & OP_BR_BASE_MASK) != OP_BR_BASE) 1922d9ae7f2bSJakub Kicinski continue; 1923d9ae7f2bSJakub Kicinski 1924d9ae7f2bSJakub Kicinski special = FIELD_GET(OP_BR_SPECIAL, nfp_prog->prog[br_idx]); 1925d9ae7f2bSJakub Kicinski switch (special) { 1926d9ae7f2bSJakub Kicinski case OP_BR_NORMAL: 1927d9ae7f2bSJakub Kicinski break; 1928d9ae7f2bSJakub Kicinski case OP_BR_GO_OUT: 1929d9ae7f2bSJakub Kicinski br_set_offset(&nfp_prog->prog[br_idx], 1930d9ae7f2bSJakub Kicinski nfp_prog->tgt_out); 1931d9ae7f2bSJakub Kicinski break; 1932d9ae7f2bSJakub Kicinski case OP_BR_GO_ABORT: 1933d9ae7f2bSJakub Kicinski br_set_offset(&nfp_prog->prog[br_idx], 1934d9ae7f2bSJakub Kicinski nfp_prog->tgt_abort); 1935d9ae7f2bSJakub Kicinski break; 1936d9ae7f2bSJakub Kicinski } 1937d9ae7f2bSJakub Kicinski 1938d9ae7f2bSJakub Kicinski nfp_prog->prog[br_idx] &= ~OP_BR_SPECIAL; 1939d9ae7f2bSJakub Kicinski } 1940d9ae7f2bSJakub Kicinski 1941d9ae7f2bSJakub Kicinski return 0; 1942d9ae7f2bSJakub Kicinski } 1943d9ae7f2bSJakub Kicinski 1944d9ae7f2bSJakub Kicinski static void nfp_intro(struct nfp_prog *nfp_prog) 1945d9ae7f2bSJakub Kicinski { 194618e53b6cSJakub Kicinski wrp_immed(nfp_prog, plen_reg(nfp_prog), GENMASK(13, 0)); 194718e53b6cSJakub Kicinski emit_alu(nfp_prog, plen_reg(nfp_prog), 194818e53b6cSJakub Kicinski plen_reg(nfp_prog), ALU_OP_AND, pv_len(nfp_prog)); 1949d9ae7f2bSJakub Kicinski } 1950d9ae7f2bSJakub Kicinski 1951d9ae7f2bSJakub Kicinski static void nfp_outro_tc_da(struct nfp_prog *nfp_prog) 1952d9ae7f2bSJakub Kicinski { 1953d9ae7f2bSJakub Kicinski /* TC direct-action mode: 1954d9ae7f2bSJakub Kicinski * 0,1 ok NOT SUPPORTED[1] 1955d9ae7f2bSJakub Kicinski * 2 drop 0x22 -> drop, count as stat1 1956d9ae7f2bSJakub Kicinski * 4,5 nuke 0x02 -> drop 1957d9ae7f2bSJakub Kicinski * 7 redir 0x44 -> redir, count as stat2 1958d9ae7f2bSJakub Kicinski * * unspec 0x11 -> pass, count as stat0 1959d9ae7f2bSJakub Kicinski * 1960d9ae7f2bSJakub Kicinski * [1] We can't support OK and RECLASSIFY because we can't tell TC 1961d9ae7f2bSJakub Kicinski * the exact decision made. We are forced to support UNSPEC 1962d9ae7f2bSJakub Kicinski * to handle aborts so that's the only one we handle for passing 1963d9ae7f2bSJakub Kicinski * packets up the stack. 1964d9ae7f2bSJakub Kicinski */ 1965d9ae7f2bSJakub Kicinski /* Target for aborts */ 1966d9ae7f2bSJakub Kicinski nfp_prog->tgt_abort = nfp_prog_current_offset(nfp_prog); 1967d9ae7f2bSJakub Kicinski 1968d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 1969d9ae7f2bSJakub Kicinski 1970c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 1971d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_imm(0x11), SHF_SC_L_SHF, 16); 1972d9ae7f2bSJakub Kicinski 1973d9ae7f2bSJakub Kicinski /* Target for normal exits */ 1974d9ae7f2bSJakub Kicinski nfp_prog->tgt_out = nfp_prog_current_offset(nfp_prog); 1975d9ae7f2bSJakub Kicinski 1976d9ae7f2bSJakub Kicinski /* if R0 > 7 jump to abort */ 1977d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_imm(7), ALU_OP_SUB, reg_b(0)); 1978d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BLO, nfp_prog->tgt_abort, 0); 1979c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 1980d9ae7f2bSJakub Kicinski 1981d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_b(2), 0x41221211); 1982d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_b(3), 0x41001211); 1983d9ae7f2bSJakub Kicinski 1984d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_a(1), 1985d9ae7f2bSJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(0), SHF_SC_L_SHF, 2); 1986d9ae7f2bSJakub Kicinski 1987d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(1), ALU_OP_OR, reg_imm(0)); 1988d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_a(2), 1989d9ae7f2bSJakub Kicinski reg_imm(0xf), SHF_OP_AND, reg_b(2), SHF_SC_R_SHF, 0); 1990d9ae7f2bSJakub Kicinski 1991d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(1), ALU_OP_OR, reg_imm(0)); 1992d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_b(2), 1993d9ae7f2bSJakub Kicinski reg_imm(0xf), SHF_OP_AND, reg_b(3), SHF_SC_R_SHF, 0); 1994d9ae7f2bSJakub Kicinski 1995d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 1996d9ae7f2bSJakub Kicinski 1997d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_b(2), 1998d9ae7f2bSJakub Kicinski reg_a(2), SHF_OP_OR, reg_b(2), SHF_SC_L_SHF, 4); 1999d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_b(2), SHF_SC_L_SHF, 16); 2000d9ae7f2bSJakub Kicinski } 2001d9ae7f2bSJakub Kicinski 2002d9ae7f2bSJakub Kicinski static void nfp_outro_xdp(struct nfp_prog *nfp_prog) 2003d9ae7f2bSJakub Kicinski { 2004d9ae7f2bSJakub Kicinski /* XDP return codes: 2005d9ae7f2bSJakub Kicinski * 0 aborted 0x82 -> drop, count as stat3 2006d9ae7f2bSJakub Kicinski * 1 drop 0x22 -> drop, count as stat1 2007d9ae7f2bSJakub Kicinski * 2 pass 0x11 -> pass, count as stat0 2008d9ae7f2bSJakub Kicinski * 3 tx 0x44 -> redir, count as stat2 2009d9ae7f2bSJakub Kicinski * * unknown 0x82 -> drop, count as stat3 2010d9ae7f2bSJakub Kicinski */ 2011d9ae7f2bSJakub Kicinski /* Target for aborts */ 2012d9ae7f2bSJakub Kicinski nfp_prog->tgt_abort = nfp_prog_current_offset(nfp_prog); 2013d9ae7f2bSJakub Kicinski 2014d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 2015d9ae7f2bSJakub Kicinski 2016c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 2017d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_imm(0x82), SHF_SC_L_SHF, 16); 2018d9ae7f2bSJakub Kicinski 2019d9ae7f2bSJakub Kicinski /* Target for normal exits */ 2020d9ae7f2bSJakub Kicinski nfp_prog->tgt_out = nfp_prog_current_offset(nfp_prog); 2021d9ae7f2bSJakub Kicinski 2022d9ae7f2bSJakub Kicinski /* if R0 > 3 jump to abort */ 2023d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_imm(3), ALU_OP_SUB, reg_b(0)); 2024d9ae7f2bSJakub Kicinski emit_br(nfp_prog, BR_BLO, nfp_prog->tgt_abort, 0); 2025d9ae7f2bSJakub Kicinski 2026d9ae7f2bSJakub Kicinski wrp_immed(nfp_prog, reg_b(2), 0x44112282); 2027d9ae7f2bSJakub Kicinski 2028d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_a(1), 2029d9ae7f2bSJakub Kicinski reg_none(), SHF_OP_NONE, reg_b(0), SHF_SC_L_SHF, 3); 2030d9ae7f2bSJakub Kicinski 2031d9ae7f2bSJakub Kicinski emit_alu(nfp_prog, reg_none(), reg_a(1), ALU_OP_OR, reg_imm(0)); 2032d9ae7f2bSJakub Kicinski emit_shf(nfp_prog, reg_b(2), 2033d9ae7f2bSJakub Kicinski reg_imm(0xff), SHF_OP_AND, reg_b(2), SHF_SC_R_SHF, 0); 2034d9ae7f2bSJakub Kicinski 2035d9ae7f2bSJakub Kicinski emit_br_def(nfp_prog, nfp_prog->tgt_done, 2); 2036d9ae7f2bSJakub Kicinski 2037c000dfb5SJakub Kicinski wrp_mov(nfp_prog, reg_a(0), NFP_BPF_ABI_FLAGS); 2038d9ae7f2bSJakub Kicinski emit_ld_field(nfp_prog, reg_a(0), 0xc, reg_b(2), SHF_SC_L_SHF, 16); 2039d9ae7f2bSJakub Kicinski } 2040d9ae7f2bSJakub Kicinski 2041d9ae7f2bSJakub Kicinski static void nfp_outro(struct nfp_prog *nfp_prog) 2042d9ae7f2bSJakub Kicinski { 2043012bb8a8SJakub Kicinski switch (nfp_prog->type) { 2044012bb8a8SJakub Kicinski case BPF_PROG_TYPE_SCHED_CLS: 2045d9ae7f2bSJakub Kicinski nfp_outro_tc_da(nfp_prog); 2046d9ae7f2bSJakub Kicinski break; 2047012bb8a8SJakub Kicinski case BPF_PROG_TYPE_XDP: 2048d9ae7f2bSJakub Kicinski nfp_outro_xdp(nfp_prog); 2049d9ae7f2bSJakub Kicinski break; 2050012bb8a8SJakub Kicinski default: 2051012bb8a8SJakub Kicinski WARN_ON(1); 2052d9ae7f2bSJakub Kicinski } 2053d9ae7f2bSJakub Kicinski } 2054d9ae7f2bSJakub Kicinski 2055d9ae7f2bSJakub Kicinski static int nfp_translate(struct nfp_prog *nfp_prog) 2056d9ae7f2bSJakub Kicinski { 2057d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta; 2058ff42bb9fSJakub Kicinski int err; 2059d9ae7f2bSJakub Kicinski 2060d9ae7f2bSJakub Kicinski nfp_intro(nfp_prog); 2061d9ae7f2bSJakub Kicinski if (nfp_prog->error) 2062d9ae7f2bSJakub Kicinski return nfp_prog->error; 2063d9ae7f2bSJakub Kicinski 2064d9ae7f2bSJakub Kicinski list_for_each_entry(meta, &nfp_prog->insns, l) { 2065d9ae7f2bSJakub Kicinski instr_cb_t cb = instr_cb[meta->insn.code]; 2066d9ae7f2bSJakub Kicinski 2067d9ae7f2bSJakub Kicinski meta->off = nfp_prog_current_offset(nfp_prog); 2068d9ae7f2bSJakub Kicinski 2069d9ae7f2bSJakub Kicinski if (meta->skip) { 2070d9ae7f2bSJakub Kicinski nfp_prog->n_translated++; 2071d9ae7f2bSJakub Kicinski continue; 2072d9ae7f2bSJakub Kicinski } 2073d9ae7f2bSJakub Kicinski 2074d9ae7f2bSJakub Kicinski if (nfp_meta_has_prev(nfp_prog, meta) && 2075d9ae7f2bSJakub Kicinski nfp_meta_prev(meta)->double_cb) 2076d9ae7f2bSJakub Kicinski cb = nfp_meta_prev(meta)->double_cb; 2077d9ae7f2bSJakub Kicinski if (!cb) 2078d9ae7f2bSJakub Kicinski return -ENOENT; 2079d9ae7f2bSJakub Kicinski err = cb(nfp_prog, meta); 2080d9ae7f2bSJakub Kicinski if (err) 2081d9ae7f2bSJakub Kicinski return err; 2082d9ae7f2bSJakub Kicinski 2083d9ae7f2bSJakub Kicinski nfp_prog->n_translated++; 2084d9ae7f2bSJakub Kicinski } 2085d9ae7f2bSJakub Kicinski 2086854dc87dSJiong Wang nfp_prog->last_bpf_off = nfp_prog_current_offset(nfp_prog) - 1; 2087854dc87dSJiong Wang 2088d9ae7f2bSJakub Kicinski nfp_outro(nfp_prog); 2089d9ae7f2bSJakub Kicinski if (nfp_prog->error) 2090d9ae7f2bSJakub Kicinski return nfp_prog->error; 2091d9ae7f2bSJakub Kicinski 2092ff42bb9fSJakub Kicinski wrp_nops(nfp_prog, NFP_USTORE_PREFETCH_WINDOW); 20931c03e03fSJakub Kicinski if (nfp_prog->error) 20941c03e03fSJakub Kicinski return nfp_prog->error; 20951c03e03fSJakub Kicinski 2096d9ae7f2bSJakub Kicinski return nfp_fixup_branches(nfp_prog); 2097d9ae7f2bSJakub Kicinski } 2098d9ae7f2bSJakub Kicinski 2099d9ae7f2bSJakub Kicinski /* --- Optimizations --- */ 2100d9ae7f2bSJakub Kicinski static void nfp_bpf_opt_reg_init(struct nfp_prog *nfp_prog) 2101d9ae7f2bSJakub Kicinski { 2102d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta; 2103d9ae7f2bSJakub Kicinski 2104d9ae7f2bSJakub Kicinski list_for_each_entry(meta, &nfp_prog->insns, l) { 2105d9ae7f2bSJakub Kicinski struct bpf_insn insn = meta->insn; 2106d9ae7f2bSJakub Kicinski 2107d9ae7f2bSJakub Kicinski /* Programs converted from cBPF start with register xoring */ 2108d9ae7f2bSJakub Kicinski if (insn.code == (BPF_ALU64 | BPF_XOR | BPF_X) && 2109d9ae7f2bSJakub Kicinski insn.src_reg == insn.dst_reg) 2110d9ae7f2bSJakub Kicinski continue; 2111d9ae7f2bSJakub Kicinski 2112d9ae7f2bSJakub Kicinski /* Programs start with R6 = R1 but we ignore the skb pointer */ 2113d9ae7f2bSJakub Kicinski if (insn.code == (BPF_ALU64 | BPF_MOV | BPF_X) && 2114d9ae7f2bSJakub Kicinski insn.src_reg == 1 && insn.dst_reg == 6) 2115d9ae7f2bSJakub Kicinski meta->skip = true; 2116d9ae7f2bSJakub Kicinski 2117d9ae7f2bSJakub Kicinski /* Return as soon as something doesn't match */ 2118d9ae7f2bSJakub Kicinski if (!meta->skip) 2119d9ae7f2bSJakub Kicinski return; 2120d9ae7f2bSJakub Kicinski } 2121d9ae7f2bSJakub Kicinski } 2122d9ae7f2bSJakub Kicinski 2123d9ae7f2bSJakub Kicinski /* Remove masking after load since our load guarantees this is not needed */ 2124d9ae7f2bSJakub Kicinski static void nfp_bpf_opt_ld_mask(struct nfp_prog *nfp_prog) 2125d9ae7f2bSJakub Kicinski { 2126d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta1, *meta2; 2127d9ae7f2bSJakub Kicinski const s32 exp_mask[] = { 2128d9ae7f2bSJakub Kicinski [BPF_B] = 0x000000ffU, 2129d9ae7f2bSJakub Kicinski [BPF_H] = 0x0000ffffU, 2130d9ae7f2bSJakub Kicinski [BPF_W] = 0xffffffffU, 2131d9ae7f2bSJakub Kicinski }; 2132d9ae7f2bSJakub Kicinski 2133d9ae7f2bSJakub Kicinski nfp_for_each_insn_walk2(nfp_prog, meta1, meta2) { 2134d9ae7f2bSJakub Kicinski struct bpf_insn insn, next; 2135d9ae7f2bSJakub Kicinski 2136d9ae7f2bSJakub Kicinski insn = meta1->insn; 2137d9ae7f2bSJakub Kicinski next = meta2->insn; 2138d9ae7f2bSJakub Kicinski 2139d9ae7f2bSJakub Kicinski if (BPF_CLASS(insn.code) != BPF_LD) 2140d9ae7f2bSJakub Kicinski continue; 2141d9ae7f2bSJakub Kicinski if (BPF_MODE(insn.code) != BPF_ABS && 2142d9ae7f2bSJakub Kicinski BPF_MODE(insn.code) != BPF_IND) 2143d9ae7f2bSJakub Kicinski continue; 2144d9ae7f2bSJakub Kicinski 2145d9ae7f2bSJakub Kicinski if (next.code != (BPF_ALU64 | BPF_AND | BPF_K)) 2146d9ae7f2bSJakub Kicinski continue; 2147d9ae7f2bSJakub Kicinski 2148d9ae7f2bSJakub Kicinski if (!exp_mask[BPF_SIZE(insn.code)]) 2149d9ae7f2bSJakub Kicinski continue; 2150d9ae7f2bSJakub Kicinski if (exp_mask[BPF_SIZE(insn.code)] != next.imm) 2151d9ae7f2bSJakub Kicinski continue; 2152d9ae7f2bSJakub Kicinski 2153d9ae7f2bSJakub Kicinski if (next.src_reg || next.dst_reg) 2154d9ae7f2bSJakub Kicinski continue; 2155d9ae7f2bSJakub Kicinski 21561266f5d6SJiong Wang if (meta2->flags & FLAG_INSN_IS_JUMP_DST) 21571266f5d6SJiong Wang continue; 21581266f5d6SJiong Wang 2159d9ae7f2bSJakub Kicinski meta2->skip = true; 2160d9ae7f2bSJakub Kicinski } 2161d9ae7f2bSJakub Kicinski } 2162d9ae7f2bSJakub Kicinski 2163d9ae7f2bSJakub Kicinski static void nfp_bpf_opt_ld_shift(struct nfp_prog *nfp_prog) 2164d9ae7f2bSJakub Kicinski { 2165d9ae7f2bSJakub Kicinski struct nfp_insn_meta *meta1, *meta2, *meta3; 2166d9ae7f2bSJakub Kicinski 2167d9ae7f2bSJakub Kicinski nfp_for_each_insn_walk3(nfp_prog, meta1, meta2, meta3) { 2168d9ae7f2bSJakub Kicinski struct bpf_insn insn, next1, next2; 2169d9ae7f2bSJakub Kicinski 2170d9ae7f2bSJakub Kicinski insn = meta1->insn; 2171d9ae7f2bSJakub Kicinski next1 = meta2->insn; 2172d9ae7f2bSJakub Kicinski next2 = meta3->insn; 2173d9ae7f2bSJakub Kicinski 2174d9ae7f2bSJakub Kicinski if (BPF_CLASS(insn.code) != BPF_LD) 2175d9ae7f2bSJakub Kicinski continue; 2176d9ae7f2bSJakub Kicinski if (BPF_MODE(insn.code) != BPF_ABS && 2177d9ae7f2bSJakub Kicinski BPF_MODE(insn.code) != BPF_IND) 2178d9ae7f2bSJakub Kicinski continue; 2179d9ae7f2bSJakub Kicinski if (BPF_SIZE(insn.code) != BPF_W) 2180d9ae7f2bSJakub Kicinski continue; 2181d9ae7f2bSJakub Kicinski 2182d9ae7f2bSJakub Kicinski if (!(next1.code == (BPF_LSH | BPF_K | BPF_ALU64) && 2183d9ae7f2bSJakub Kicinski next2.code == (BPF_RSH | BPF_K | BPF_ALU64)) && 2184d9ae7f2bSJakub Kicinski !(next1.code == (BPF_RSH | BPF_K | BPF_ALU64) && 2185d9ae7f2bSJakub Kicinski next2.code == (BPF_LSH | BPF_K | BPF_ALU64))) 2186d9ae7f2bSJakub Kicinski continue; 2187d9ae7f2bSJakub Kicinski 2188d9ae7f2bSJakub Kicinski if (next1.src_reg || next1.dst_reg || 2189d9ae7f2bSJakub Kicinski next2.src_reg || next2.dst_reg) 2190d9ae7f2bSJakub Kicinski continue; 2191d9ae7f2bSJakub Kicinski 2192d9ae7f2bSJakub Kicinski if (next1.imm != 0x20 || next2.imm != 0x20) 2193d9ae7f2bSJakub Kicinski continue; 2194d9ae7f2bSJakub Kicinski 219529fe46efSJiong Wang if (meta2->flags & FLAG_INSN_IS_JUMP_DST || 219629fe46efSJiong Wang meta3->flags & FLAG_INSN_IS_JUMP_DST) 219729fe46efSJiong Wang continue; 219829fe46efSJiong Wang 2199d9ae7f2bSJakub Kicinski meta2->skip = true; 2200d9ae7f2bSJakub Kicinski meta3->skip = true; 2201d9ae7f2bSJakub Kicinski } 2202d9ae7f2bSJakub Kicinski } 2203d9ae7f2bSJakub Kicinski 2204d9ae7f2bSJakub Kicinski static int nfp_bpf_optimize(struct nfp_prog *nfp_prog) 2205d9ae7f2bSJakub Kicinski { 2206d9ae7f2bSJakub Kicinski nfp_bpf_opt_reg_init(nfp_prog); 2207d9ae7f2bSJakub Kicinski 2208d9ae7f2bSJakub Kicinski nfp_bpf_opt_ld_mask(nfp_prog); 2209d9ae7f2bSJakub Kicinski nfp_bpf_opt_ld_shift(nfp_prog); 2210d9ae7f2bSJakub Kicinski 2211d9ae7f2bSJakub Kicinski return 0; 2212d9ae7f2bSJakub Kicinski } 2213d9ae7f2bSJakub Kicinski 22142e85d388SJakub Kicinski static int nfp_bpf_ustore_calc(struct nfp_prog *nfp_prog, __le64 *ustore) 2215fd068ddcSJakub Kicinski { 2216fd068ddcSJakub Kicinski int i; 2217fd068ddcSJakub Kicinski 2218fd068ddcSJakub Kicinski for (i = 0; i < nfp_prog->prog_len; i++) { 2219fd068ddcSJakub Kicinski int err; 2220fd068ddcSJakub Kicinski 2221fd068ddcSJakub Kicinski err = nfp_ustore_check_valid_no_ecc(nfp_prog->prog[i]); 2222fd068ddcSJakub Kicinski if (err) 2223fd068ddcSJakub Kicinski return err; 2224fd068ddcSJakub Kicinski 2225fd068ddcSJakub Kicinski nfp_prog->prog[i] = nfp_ustore_calc_ecc_insn(nfp_prog->prog[i]); 22262e85d388SJakub Kicinski 22272e85d388SJakub Kicinski ustore[i] = cpu_to_le64(nfp_prog->prog[i]); 2228fd068ddcSJakub Kicinski } 2229fd068ddcSJakub Kicinski 2230fd068ddcSJakub Kicinski return 0; 2231fd068ddcSJakub Kicinski } 2232fd068ddcSJakub Kicinski 2233c6c580d7SJakub Kicinski int nfp_bpf_jit(struct nfp_prog *nfp_prog) 2234d9ae7f2bSJakub Kicinski { 2235d9ae7f2bSJakub Kicinski int ret; 2236d9ae7f2bSJakub Kicinski 2237d9ae7f2bSJakub Kicinski ret = nfp_bpf_optimize(nfp_prog); 2238d9ae7f2bSJakub Kicinski if (ret) 22399314c442SJakub Kicinski return ret; 2240d9ae7f2bSJakub Kicinski 2241d9ae7f2bSJakub Kicinski ret = nfp_translate(nfp_prog); 2242d9ae7f2bSJakub Kicinski if (ret) { 2243d9ae7f2bSJakub Kicinski pr_err("Translation failed with error %d (translated: %u)\n", 2244d9ae7f2bSJakub Kicinski ret, nfp_prog->n_translated); 22459314c442SJakub Kicinski return -EINVAL; 2246d9ae7f2bSJakub Kicinski } 2247d9ae7f2bSJakub Kicinski 22489314c442SJakub Kicinski return nfp_bpf_ustore_calc(nfp_prog, (__force __le64 *)nfp_prog->prog); 2249d9ae7f2bSJakub Kicinski } 2250