diff options
Diffstat (limited to 'drivers/net/ethernet/netronome/nfp/bpf/jit.c')
-rw-r--r-- | drivers/net/ethernet/netronome/nfp/bpf/jit.c | 41 |
1 files changed, 34 insertions, 7 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/bpf/jit.c b/drivers/net/ethernet/netronome/nfp/bpf/jit.c index 5105b9247839..d84f00b80aac 100644 --- a/drivers/net/ethernet/netronome/nfp/bpf/jit.c +++ b/drivers/net/ethernet/netronome/nfp/bpf/jit.c @@ -832,8 +832,8 @@ wrp_lmem_store(struct nfp_prog *nfp_prog, u8 src, u8 src_byte, s32 off, static int mem_op_stack(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, - unsigned int size, unsigned int ptr_off, u8 gpr, bool clr_gpr, - lmem_step step) + unsigned int size, unsigned int ptr_off, u8 gpr, u8 ptr_gpr, + bool clr_gpr, lmem_step step) { s32 off = nfp_prog->stack_depth + meta->insn.off + ptr_off; bool first = true, last; @@ -844,7 +844,19 @@ mem_op_stack(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, bool lm3 = true; int ret; - if (off + size <= 64) { + if (meta->ptr_not_const) { + /* Use of the last encountered ptr_off is OK, they all have + * the same alignment. Depend on low bits of value being + * discarded when written to LMaddr register. + */ + stack_off_reg = ur_load_imm_any(nfp_prog, meta->insn.off, + stack_imm(nfp_prog)); + + emit_alu(nfp_prog, imm_b(nfp_prog), + reg_a(ptr_gpr), ALU_OP_ADD, stack_off_reg); + + needs_inc = true; + } else if (off + size <= 64) { /* We can reach bottom 64B with LMaddr0 */ lm3 = false; } else if (round_down(off, 32) == round_down(off + size - 1, 32)) { @@ -1096,9 +1108,22 @@ static void wrp_end32(struct nfp_prog *nfp_prog, swreg reg_in, u8 gpr_out) static int mov_reg64(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta) { const struct bpf_insn *insn = &meta->insn; + u8 dst = insn->dst_reg * 2; + u8 src = insn->src_reg * 2; + + if (insn->src_reg == BPF_REG_10) { + swreg stack_depth_reg; - wrp_reg_mov(nfp_prog, insn->dst_reg * 2, insn->src_reg * 2); - wrp_reg_mov(nfp_prog, insn->dst_reg * 2 + 1, insn->src_reg * 2 + 1); + stack_depth_reg = ur_load_imm_any(nfp_prog, + nfp_prog->stack_depth, + stack_imm(nfp_prog)); + emit_alu(nfp_prog, reg_both(dst), + stack_reg(nfp_prog), ALU_OP_ADD, stack_depth_reg); + wrp_immed(nfp_prog, reg_both(dst + 1), 0); + } else { + wrp_reg_mov(nfp_prog, dst, src); + wrp_reg_mov(nfp_prog, dst + 1, src + 1); + } return 0; } @@ -1413,7 +1438,8 @@ mem_ldx_stack(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, unsigned int size, unsigned int ptr_off) { return mem_op_stack(nfp_prog, meta, size, ptr_off, - meta->insn.dst_reg * 2, true, wrp_lmem_load); + meta->insn.dst_reg * 2, meta->insn.src_reg * 2, + true, wrp_lmem_load); } static int mem_ldx_skb(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, @@ -1585,7 +1611,8 @@ mem_stx_stack(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, unsigned int size, unsigned int ptr_off) { return mem_op_stack(nfp_prog, meta, size, ptr_off, - meta->insn.src_reg * 2, false, wrp_lmem_store); + meta->insn.src_reg * 2, meta->insn.dst_reg * 2, + false, wrp_lmem_store); } static int |