1/* SPDX-License-Identifier: GPL-2.0 2 * 3 * Copyright 2017-2018 HabanaLabs, Ltd. 4 * All Rights Reserved. 5 * 6 */ 7 8#ifndef GOYA_PACKETS_H 9#define GOYA_PACKETS_H 10 11#include <linux/types.h> 12 13#define PACKET_HEADER_PACKET_ID_SHIFT 56 14#define PACKET_HEADER_PACKET_ID_MASK 0x1F00000000000000ull 15 16enum packet_id { 17 PACKET_WREG_32 = 0x1, 18 PACKET_WREG_BULK = 0x2, 19 PACKET_MSG_LONG = 0x3, 20 PACKET_MSG_SHORT = 0x4, 21 PACKET_CP_DMA = 0x5, 22 PACKET_MSG_PROT = 0x7, 23 PACKET_FENCE = 0x8, 24 PACKET_LIN_DMA = 0x9, 25 PACKET_NOP = 0xA, 26 PACKET_STOP = 0xB, 27 MAX_PACKET_ID = (PACKET_HEADER_PACKET_ID_MASK >> 28 PACKET_HEADER_PACKET_ID_SHIFT) + 1 29}; 30 31#define GOYA_PKT_CTL_OPCODE_SHIFT 24 32#define GOYA_PKT_CTL_OPCODE_MASK 0x1F000000 33 34#define GOYA_PKT_CTL_EB_SHIFT 29 35#define GOYA_PKT_CTL_EB_MASK 0x20000000 36 37#define GOYA_PKT_CTL_RB_SHIFT 30 38#define GOYA_PKT_CTL_RB_MASK 0x40000000 39 40#define GOYA_PKT_CTL_MB_SHIFT 31 41#define GOYA_PKT_CTL_MB_MASK 0x80000000 42 43/* All packets have, at least, an 8-byte header, which contains 44 * the packet type. The kernel driver uses the packet header for packet 45 * validation and to perform any necessary required preparation before 46 * sending them off to the hardware. 47 */ 48struct goya_packet { 49 __le64 header; 50 /* The rest of the packet data follows. Use the corresponding 51 * packet_XXX struct to deference the data, based on packet type 52 */ 53 u8 contents[]; 54}; 55 56struct packet_nop { 57 __le32 reserved; 58 __le32 ctl; 59}; 60 61struct packet_stop { 62 __le32 reserved; 63 __le32 ctl; 64}; 65 66#define GOYA_PKT_WREG32_CTL_REG_OFFSET_SHIFT 0 67#define GOYA_PKT_WREG32_CTL_REG_OFFSET_MASK 0x0000FFFF 68 69struct packet_wreg32 { 70 __le32 value; 71 __le32 ctl; 72}; 73 74struct packet_wreg_bulk { 75 __le32 size64; 76 __le32 ctl; 77 __le64 values[]; /* data starts here */ 78}; 79 80struct packet_msg_long { 81 __le32 value; 82 __le32 ctl; 83 __le64 addr; 84}; 85 86struct packet_msg_short { 87 __le32 value; 88 __le32 ctl; 89}; 90 91struct packet_msg_prot { 92 __le32 value; 93 __le32 ctl; 94 __le64 addr; 95}; 96 97struct packet_fence { 98 __le32 cfg; 99 __le32 ctl; 100}; 101 102#define GOYA_PKT_LIN_DMA_CTL_WO_SHIFT 0 103#define GOYA_PKT_LIN_DMA_CTL_WO_MASK 0x00000001 104 105#define GOYA_PKT_LIN_DMA_CTL_RDCOMP_SHIFT 1 106#define GOYA_PKT_LIN_DMA_CTL_RDCOMP_MASK 0x00000002 107 108#define GOYA_PKT_LIN_DMA_CTL_WRCOMP_SHIFT 2 109#define GOYA_PKT_LIN_DMA_CTL_WRCOMP_MASK 0x00000004 110 111#define GOYA_PKT_LIN_DMA_CTL_MEMSET_SHIFT 6 112#define GOYA_PKT_LIN_DMA_CTL_MEMSET_MASK 0x00000040 113 114#define GOYA_PKT_LIN_DMA_CTL_DMA_DIR_SHIFT 20 115#define GOYA_PKT_LIN_DMA_CTL_DMA_DIR_MASK 0x00700000 116 117struct packet_lin_dma { 118 __le32 tsize; 119 __le32 ctl; 120 __le64 src_addr; 121 __le64 dst_addr; 122}; 123 124struct packet_cp_dma { 125 __le32 tsize; 126 __le32 ctl; 127 __le64 src_addr; 128}; 129 130#endif /* GOYA_PACKETS_H */ 131