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 16 enum 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 enum goya_dma_direction { 32 DMA_HOST_TO_DRAM, 33 DMA_HOST_TO_SRAM, 34 DMA_DRAM_TO_SRAM, 35 DMA_SRAM_TO_DRAM, 36 DMA_SRAM_TO_HOST, 37 DMA_DRAM_TO_HOST, 38 DMA_DRAM_TO_DRAM, 39 DMA_SRAM_TO_SRAM, 40 DMA_ENUM_MAX 41 }; 42 43 #define GOYA_PKT_CTL_OPCODE_SHIFT 24 44 #define GOYA_PKT_CTL_OPCODE_MASK 0x1F000000 45 46 #define GOYA_PKT_CTL_EB_SHIFT 29 47 #define GOYA_PKT_CTL_EB_MASK 0x20000000 48 49 #define GOYA_PKT_CTL_RB_SHIFT 30 50 #define GOYA_PKT_CTL_RB_MASK 0x40000000 51 52 #define GOYA_PKT_CTL_MB_SHIFT 31 53 #define GOYA_PKT_CTL_MB_MASK 0x80000000 54 55 /* All packets have, at least, an 8-byte header, which contains 56 * the packet type. The kernel driver uses the packet header for packet 57 * validation and to perform any necessary required preparation before 58 * sending them off to the hardware. 59 */ 60 struct goya_packet { 61 __le64 header; 62 /* The rest of the packet data follows. Use the corresponding 63 * packet_XXX struct to deference the data, based on packet type 64 */ 65 u8 contents[0]; 66 }; 67 68 struct packet_nop { 69 __le32 reserved; 70 __le32 ctl; 71 }; 72 73 struct packet_stop { 74 __le32 reserved; 75 __le32 ctl; 76 }; 77 78 #define GOYA_PKT_WREG32_CTL_REG_OFFSET_SHIFT 0 79 #define GOYA_PKT_WREG32_CTL_REG_OFFSET_MASK 0x0000FFFF 80 81 struct packet_wreg32 { 82 __le32 value; 83 __le32 ctl; 84 }; 85 86 struct packet_wreg_bulk { 87 __le32 size64; 88 __le32 ctl; 89 __le64 values[0]; /* data starts here */ 90 }; 91 92 struct packet_msg_long { 93 __le32 value; 94 __le32 ctl; 95 __le64 addr; 96 }; 97 98 struct packet_msg_short { 99 __le32 value; 100 __le32 ctl; 101 }; 102 103 struct packet_msg_prot { 104 __le32 value; 105 __le32 ctl; 106 __le64 addr; 107 }; 108 109 struct packet_fence { 110 __le32 cfg; 111 __le32 ctl; 112 }; 113 114 #define GOYA_PKT_LIN_DMA_CTL_WO_SHIFT 0 115 #define GOYA_PKT_LIN_DMA_CTL_WO_MASK 0x00000001 116 117 #define GOYA_PKT_LIN_DMA_CTL_RDCOMP_SHIFT 1 118 #define GOYA_PKT_LIN_DMA_CTL_RDCOMP_MASK 0x00000002 119 120 #define GOYA_PKT_LIN_DMA_CTL_WRCOMP_SHIFT 2 121 #define GOYA_PKT_LIN_DMA_CTL_WRCOMP_MASK 0x00000004 122 123 #define GOYA_PKT_LIN_DMA_CTL_MEMSET_SHIFT 6 124 #define GOYA_PKT_LIN_DMA_CTL_MEMSET_MASK 0x00000040 125 126 #define GOYA_PKT_LIN_DMA_CTL_DMA_DIR_SHIFT 20 127 #define GOYA_PKT_LIN_DMA_CTL_DMA_DIR_MASK 0x00700000 128 129 struct packet_lin_dma { 130 __le32 tsize; 131 __le32 ctl; 132 __le64 src_addr; 133 __le64 dst_addr; 134 }; 135 136 struct packet_cp_dma { 137 __le32 tsize; 138 __le32 ctl; 139 __le64 src_addr; 140 }; 141 142 #endif /* GOYA_PACKETS_H */ 143
