Release 4.16 drivers/net/ethernet/netronome/nfp/nfp_asm.h
/*
* Copyright (C) 2016-2017 Netronome Systems, Inc.
*
* This software is dual licensed under the GNU General License Version 2,
* June 1991 as shown in the file COPYING in the top-level directory of this
* source tree or the BSD 2-Clause License provided below. You have the
* option to license this software under the complete terms of either license.
*
* The BSD 2-Clause License:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* 1. Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __NFP_ASM_H__
#define __NFP_ASM_H__ 1
#include <linux/bitfield.h>
#include <linux/bug.h>
#include <linux/types.h>
#define REG_NONE 0
#define RE_REG_NO_DST 0x020
#define RE_REG_IMM 0x020
#define RE_REG_IMM_encode(x) \
(RE_REG_IMM | ((x) & 0x1f) | (((x) & 0x60) << 1))
#define RE_REG_IMM_MAX 0x07fULL
#define RE_REG_LM 0x050
#define RE_REG_LM_IDX 0x008
#define RE_REG_LM_IDX_MAX 0x7
#define RE_REG_XFR 0x080
#define UR_REG_XFR 0x180
#define UR_REG_LM 0x200
#define UR_REG_LM_IDX 0x020
#define UR_REG_LM_POST_MOD 0x010
#define UR_REG_LM_POST_MOD_DEC 0x001
#define UR_REG_LM_IDX_MAX 0xf
#define UR_REG_NN 0x280
#define UR_REG_NO_DST 0x300
#define UR_REG_IMM UR_REG_NO_DST
#define UR_REG_IMM_encode(x) (UR_REG_IMM | (x))
#define UR_REG_IMM_MAX 0x0ffULL
#define OP_BR_BASE 0x0d800000020ULL
#define OP_BR_BASE_MASK 0x0f8000c3ce0ULL
#define OP_BR_MASK 0x0000000001fULL
#define OP_BR_EV_PIP 0x00000000300ULL
#define OP_BR_CSS 0x0000003c000ULL
#define OP_BR_DEFBR 0x00000300000ULL
#define OP_BR_ADDR_LO 0x007ffc00000ULL
#define OP_BR_ADDR_HI 0x10000000000ULL
#define nfp_is_br(_insn) \
(((_insn) & OP_BR_BASE_MASK) == OP_BR_BASE)
enum br_mask {
BR_BEQ = 0x00,
BR_BNE = 0x01,
BR_BMI = 0x02,
BR_BHS = 0x04,
BR_BLO = 0x05,
BR_BGE = 0x08,
BR_BLT = 0x09,
BR_UNC = 0x18,
};
enum br_ev_pip {
BR_EV_PIP_UNCOND = 0,
BR_EV_PIP_COND = 1,
};
enum br_ctx_signal_state {
BR_CSS_NONE = 2,
};
u16 br_get_offset(u64 instr);
void br_set_offset(u64 *instr, u16 offset);
void br_add_offset(u64 *instr, u16 offset);
#define OP_BBYTE_BASE 0x0c800000000ULL
#define OP_BB_A_SRC 0x000000000ffULL
#define OP_BB_BYTE 0x00000000300ULL
#define OP_BB_B_SRC 0x0000003fc00ULL
#define OP_BB_I8 0x00000040000ULL
#define OP_BB_EQ 0x00000080000ULL
#define OP_BB_DEFBR 0x00000300000ULL
#define OP_BB_ADDR_LO 0x007ffc00000ULL
#define OP_BB_ADDR_HI 0x10000000000ULL
#define OP_BB_SRC_LMEXTN 0x40000000000ULL
#define OP_BALU_BASE 0x0e800000000ULL
#define OP_BA_A_SRC 0x000000003ffULL
#define OP_BA_B_SRC 0x000000ffc00ULL
#define OP_BA_DEFBR 0x00000300000ULL
#define OP_BA_ADDR_HI 0x0007fc00000ULL
#define OP_IMMED_A_SRC 0x000000003ffULL
#define OP_IMMED_B_SRC 0x000000ffc00ULL
#define OP_IMMED_IMM 0x0000ff00000ULL
#define OP_IMMED_WIDTH 0x00060000000ULL
#define OP_IMMED_INV 0x00080000000ULL
#define OP_IMMED_SHIFT 0x00600000000ULL
#define OP_IMMED_BASE 0x0f000000000ULL
#define OP_IMMED_WR_AB 0x20000000000ULL
#define OP_IMMED_SRC_LMEXTN 0x40000000000ULL
#define OP_IMMED_DST_LMEXTN 0x80000000000ULL
enum immed_width {
IMMED_WIDTH_ALL = 0,
IMMED_WIDTH_BYTE = 1,
IMMED_WIDTH_WORD = 2,
};
enum immed_shift {
IMMED_SHIFT_0B = 0,
IMMED_SHIFT_1B = 1,
IMMED_SHIFT_2B = 2,
};
u16 immed_get_value(u64 instr);
void immed_set_value(u64 *instr, u16 immed);
void immed_add_value(u64 *instr, u16 offset);
#define OP_SHF_BASE 0x08000000000ULL
#define OP_SHF_A_SRC 0x000000000ffULL
#define OP_SHF_SC 0x00000000300ULL
#define OP_SHF_B_SRC 0x0000003fc00ULL
#define OP_SHF_I8 0x00000040000ULL
#define OP_SHF_SW 0x00000080000ULL
#define OP_SHF_DST 0x0000ff00000ULL
#define OP_SHF_SHIFT 0x001f0000000ULL
#define OP_SHF_OP 0x00e00000000ULL
#define OP_SHF_DST_AB 0x01000000000ULL
#define OP_SHF_WR_AB 0x20000000000ULL
#define OP_SHF_SRC_LMEXTN 0x40000000000ULL
#define OP_SHF_DST_LMEXTN 0x80000000000ULL
enum shf_op {
SHF_OP_NONE = 0,
SHF_OP_AND = 2,
SHF_OP_OR = 5,
};
enum shf_sc {
SHF_SC_R_ROT = 0,
SHF_SC_NONE = SHF_SC_R_ROT,
SHF_SC_R_SHF = 1,
SHF_SC_L_SHF = 2,
SHF_SC_R_DSHF = 3,
};
#define OP_ALU_A_SRC 0x000000003ffULL
#define OP_ALU_B_SRC 0x000000ffc00ULL
#define OP_ALU_DST 0x0003ff00000ULL
#define OP_ALU_SW 0x00040000000ULL
#define OP_ALU_OP 0x00f80000000ULL
#define OP_ALU_DST_AB 0x01000000000ULL
#define OP_ALU_BASE 0x0a000000000ULL
#define OP_ALU_WR_AB 0x20000000000ULL
#define OP_ALU_SRC_LMEXTN 0x40000000000ULL
#define OP_ALU_DST_LMEXTN 0x80000000000ULL
enum alu_op {
ALU_OP_NONE = 0x00,
ALU_OP_ADD = 0x01,
ALU_OP_NOT = 0x04,
ALU_OP_ADD_2B = 0x05,
ALU_OP_AND = 0x08,
ALU_OP_SUB_C = 0x0d,
ALU_OP_ADD_C = 0x11,
ALU_OP_OR = 0x14,
ALU_OP_SUB = 0x15,
ALU_OP_XOR = 0x18,
};
enum alu_dst_ab {
ALU_DST_A = 0,
ALU_DST_B = 1,
};
#define OP_LDF_BASE 0x0c000000000ULL
#define OP_LDF_A_SRC 0x000000000ffULL
#define OP_LDF_SC 0x00000000300ULL
#define OP_LDF_B_SRC 0x0000003fc00ULL
#define OP_LDF_I8 0x00000040000ULL
#define OP_LDF_SW 0x00000080000ULL
#define OP_LDF_ZF 0x00000100000ULL
#define OP_LDF_BMASK 0x0000f000000ULL
#define OP_LDF_SHF 0x001f0000000ULL
#define OP_LDF_WR_AB 0x20000000000ULL
#define OP_LDF_SRC_LMEXTN 0x40000000000ULL
#define OP_LDF_DST_LMEXTN 0x80000000000ULL
#define OP_CMD_A_SRC 0x000000000ffULL
#define OP_CMD_CTX 0x00000000300ULL
#define OP_CMD_B_SRC 0x0000003fc00ULL
#define OP_CMD_TOKEN 0x000000c0000ULL
#define OP_CMD_XFER 0x00001f00000ULL
#define OP_CMD_CNT 0x0000e000000ULL
#define OP_CMD_SIG 0x000f0000000ULL
#define OP_CMD_TGT_CMD 0x07f00000000ULL
#define OP_CMD_INDIR 0x20000000000ULL
#define OP_CMD_MODE 0x1c0000000000ULL
struct cmd_tgt_act {
u8 token;
u8 tgt_cmd;
};
enum cmd_tgt_map {
CMD_TGT_READ8,
CMD_TGT_WRITE8_SWAP,
CMD_TGT_WRITE32_SWAP,
CMD_TGT_READ32,
CMD_TGT_READ32_LE,
CMD_TGT_READ32_SWAP,
CMD_TGT_READ_LE,
CMD_TGT_READ_SWAP_LE,
__CMD_TGT_MAP_SIZE,
};
extern const struct cmd_tgt_act cmd_tgt_act[__CMD_TGT_MAP_SIZE];
enum cmd_mode {
CMD_MODE_40b_AB = 0,
CMD_MODE_40b_BA = 1,
CMD_MODE_32b = 4,
};
enum cmd_ctx_swap {
CMD_CTX_SWAP = 0,
CMD_CTX_NO_SWAP = 3,
};
#define CMD_OVE_LEN BIT(7)
#define CMD_OV_LEN GENMASK(12, 8)
#define OP_LCSR_BASE 0x0fc00000000ULL
#define OP_LCSR_A_SRC 0x000000003ffULL
#define OP_LCSR_B_SRC 0x000000ffc00ULL
#define OP_LCSR_WRITE 0x00000200000ULL
#define OP_LCSR_ADDR 0x001ffc00000ULL
#define OP_LCSR_SRC_LMEXTN 0x40000000000ULL
#define OP_LCSR_DST_LMEXTN 0x80000000000ULL
enum lcsr_wr_src {
LCSR_WR_AREG,
LCSR_WR_BREG,
LCSR_WR_IMM,
};
#define OP_CARB_BASE 0x0e000000000ULL
#define OP_CARB_OR 0x00000010000ULL
#define NFP_CSR_CTX_PTR 0x20
#define NFP_CSR_ACT_LM_ADDR0 0x64
#define NFP_CSR_ACT_LM_ADDR1 0x6c
#define NFP_CSR_ACT_LM_ADDR2 0x94
#define NFP_CSR_ACT_LM_ADDR3 0x9c
/* Software register representation, independent of operand type */
#define NN_REG_TYPE GENMASK(31, 24)
#define NN_REG_LM_IDX GENMASK(23, 22)
#define NN_REG_LM_IDX_HI BIT(23)
#define NN_REG_LM_IDX_LO BIT(22)
#define NN_REG_LM_MOD GENMASK(21, 20)
#define NN_REG_VAL GENMASK(7, 0)
enum nfp_bpf_reg_type {
NN_REG_GPR_A = BIT(0),
NN_REG_GPR_B = BIT(1),
NN_REG_GPR_BOTH = NN_REG_GPR_A | NN_REG_GPR_B,
NN_REG_NNR = BIT(2),
NN_REG_XFER = BIT(3),
NN_REG_IMM = BIT(4),
NN_REG_NONE = BIT(5),
NN_REG_LMEM = BIT(6),
};
enum nfp_bpf_lm_mode {
NN_LM_MOD_NONE = 0,
NN_LM_MOD_INC,
NN_LM_MOD_DEC,
};
#define reg_both(x) __enc_swreg((x), NN_REG_GPR_BOTH)
#define reg_a(x) __enc_swreg((x), NN_REG_GPR_A)
#define reg_b(x) __enc_swreg((x), NN_REG_GPR_B)
#define reg_nnr(x) __enc_swreg((x), NN_REG_NNR)
#define reg_xfer(x) __enc_swreg((x), NN_REG_XFER)
#define reg_imm(x) __enc_swreg((x), NN_REG_IMM)
#define reg_none() __enc_swreg(0, NN_REG_NONE)
#define reg_lm(x, off) __enc_swreg_lm((x), NN_LM_MOD_NONE, (off))
#define reg_lm_inc(x) __enc_swreg_lm((x), NN_LM_MOD_INC, 0)
#define reg_lm_dec(x) __enc_swreg_lm((x), NN_LM_MOD_DEC, 0)
#define __reg_lm(x, mod, off) __enc_swreg_lm((x), (mod), (off))
typedef __u32 __bitwise swreg;
static inline swreg __enc_swreg(u16 id, u8 type)
{
return (__force swreg)(id | FIELD_PREP(NN_REG_TYPE, type));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jakub Kiciński | 29 | 100.00% | 1 | 100.00% |
| Total | 29 | 100.00% | 1 | 100.00% |
static inline swreg __enc_swreg_lm(u8 id, enum nfp_bpf_lm_mode mode, u8 off)
{
WARN_ON(id > 3 || (off && mode != NN_LM_MOD_NONE));
return (__force swreg)(FIELD_PREP(NN_REG_TYPE, NN_REG_LMEM) |
FIELD_PREP(NN_REG_LM_IDX, id) |
FIELD_PREP(NN_REG_LM_MOD, mode) |
off);
}
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| Person | Tokens | Prop | Commits | CommitProp |
| Jakub Kiciński | 62 | 100.00% | 2 | 100.00% |
| Total | 62 | 100.00% | 2 | 100.00% |
static inline u32 swreg_raw(swreg reg)
{
return (__force u32)reg;
}
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| Jakub Kiciński | 17 | 100.00% | 1 | 100.00% |
| Total | 17 | 100.00% | 1 | 100.00% |
static inline enum nfp_bpf_reg_type swreg_type(swreg reg)
{
return FIELD_GET(NN_REG_TYPE, swreg_raw(reg));
}
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| Jakub Kiciński | 22 | 100.00% | 1 | 100.00% |
| Total | 22 | 100.00% | 1 | 100.00% |
static inline u16 swreg_value(swreg reg)
{
return FIELD_GET(NN_REG_VAL, swreg_raw(reg));
}
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| Person | Tokens | Prop | Commits | CommitProp |
| Jakub Kiciński | 21 | 100.00% | 1 | 100.00% |
| Total | 21 | 100.00% | 1 | 100.00% |
static inline bool swreg_lm_idx(swreg reg)
{
return FIELD_GET(NN_REG_LM_IDX_LO, swreg_raw(reg));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jakub Kiciński | 21 | 100.00% | 2 | 100.00% |
| Total | 21 | 100.00% | 2 | 100.00% |
static inline bool swreg_lmextn(swreg reg)
{
return FIELD_GET(NN_REG_LM_IDX_HI, swreg_raw(reg));
}
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| Person | Tokens | Prop | Commits | CommitProp |
| Jakub Kiciński | 21 | 100.00% | 2 | 100.00% |
| Total | 21 | 100.00% | 2 | 100.00% |
static inline enum nfp_bpf_lm_mode swreg_lm_mode(swreg reg)
{
return FIELD_GET(NN_REG_LM_MOD, swreg_raw(reg));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jakub Kiciński | 22 | 100.00% | 1 | 100.00% |
| Total | 22 | 100.00% | 1 | 100.00% |
struct nfp_insn_ur_regs {
enum alu_dst_ab dst_ab;
u16 dst;
u16 areg, breg;
bool swap;
bool wr_both;
bool dst_lmextn;
bool src_lmextn;
};
struct nfp_insn_re_regs {
enum alu_dst_ab dst_ab;
u8 dst;
u8 areg, breg;
bool swap;
bool wr_both;
bool i8;
bool dst_lmextn;
bool src_lmextn;
};
int swreg_to_unrestricted(swreg dst, swreg lreg, swreg rreg,
struct nfp_insn_ur_regs *reg);
int swreg_to_restricted(swreg dst, swreg lreg, swreg rreg,
struct nfp_insn_re_regs *reg, bool has_imm8);
#define NFP_USTORE_PREFETCH_WINDOW 8
int nfp_ustore_check_valid_no_ecc(u64 insn);
u64 nfp_ustore_calc_ecc_insn(u64 insn);
#define NFP_IND_ME_REFL_WR_SIG_INIT 3
#define NFP_IND_ME_CTX_PTR_BASE_MASK GENMASK(9, 0)
#define NFP_IND_NUM_CONTEXTS 8
static inline u32 nfp_get_ind_csr_ctx_ptr_offs(u32 read_offset)
{
return (read_offset & ~NFP_IND_ME_CTX_PTR_BASE_MASK) | NFP_CSR_CTX_PTR;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Carl Heymann | 20 | 100.00% | 1 | 100.00% |
| Total | 20 | 100.00% | 1 | 100.00% |
#endif
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jakub Kiciński | 1305 | 96.03% | 15 | 75.00% |
| Carl Heymann | 36 | 2.65% | 1 | 5.00% |
| Jiong Wang | 11 | 0.81% | 2 | 10.00% |
| Nic Viljoen | 4 | 0.29% | 1 | 5.00% |
| Mark Brown | 3 | 0.22% | 1 | 5.00% |
| Total | 1359 | 100.00% | 20 | 100.00% |
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