/* SPDX-License-Identifier: GPL-2.0 * * Copyright 2017-2018 HabanaLabs, Ltd. * All Rights Reserved. * */ #ifndef GOYA_PACKETS_H #define GOYA_PACKETS_H #include <linux/types.h> #define PACKET_HEADER_PACKET_ID_SHIFT 56 #define PACKET_HEADER_PACKET_ID_MASK 0x1F00000000000000ull enum packet_id { PACKET_WREG_32 = 0x1, PACKET_WREG_BULK = 0x2, PACKET_MSG_LONG = 0x3, PACKET_MSG_SHORT = 0x4, PACKET_CP_DMA = 0x5, PACKET_MSG_PROT = 0x7, PACKET_FENCE = 0x8, PACKET_LIN_DMA = 0x9, PACKET_NOP = 0xA, PACKET_STOP = 0xB, MAX_PACKET_ID = (PACKET_HEADER_PACKET_ID_MASK >> PACKET_HEADER_PACKET_ID_SHIFT) + 1 }; enum goya_dma_direction { DMA_HOST_TO_DRAM, DMA_HOST_TO_SRAM, DMA_DRAM_TO_SRAM, DMA_SRAM_TO_DRAM, DMA_SRAM_TO_HOST, DMA_DRAM_TO_HOST, DMA_DRAM_TO_DRAM, DMA_SRAM_TO_SRAM, DMA_ENUM_MAX }; #define GOYA_PKT_CTL_OPCODE_SHIFT 24 #define GOYA_PKT_CTL_OPCODE_MASK 0x1F000000 #define GOYA_PKT_CTL_EB_SHIFT 29 #define GOYA_PKT_CTL_EB_MASK 0x20000000 #define GOYA_PKT_CTL_RB_SHIFT 30 #define GOYA_PKT_CTL_RB_MASK 0x40000000 #define GOYA_PKT_CTL_MB_SHIFT 31 #define GOYA_PKT_CTL_MB_MASK 0x80000000 /* All packets have, at least, an 8-byte header, which contains * the packet type. The kernel driver uses the packet header for packet * validation and to perform any necessary required preparation before * sending them off to the hardware. */ struct goya_packet { __le64 header; /* The rest of the packet data follows. Use the corresponding * packet_XXX struct to deference the data, based on packet type */ u8 contents[]; }; struct packet_nop { __le32 reserved; __le32 ctl; }; struct packet_stop { __le32 reserved; __le32 ctl; }; #define GOYA_PKT_WREG32_CTL_REG_OFFSET_SHIFT 0 #define GOYA_PKT_WREG32_CTL_REG_OFFSET_MASK 0x0000FFFF struct packet_wreg32 { __le32 value; __le32 ctl; }; struct packet_wreg_bulk { __le32 size64; __le32 ctl; __le64 values[]; /* data starts here */ }; struct packet_msg_long { __le32 value; __le32 ctl; __le64 addr; }; struct packet_msg_short { __le32 value; __le32 ctl; }; struct packet_msg_prot { __le32 value; __le32 ctl; __le64 addr; }; struct packet_fence { __le32 cfg; __le32 ctl; }; #define GOYA_PKT_LIN_DMA_CTL_WO_SHIFT 0 #define GOYA_PKT_LIN_DMA_CTL_WO_MASK 0x00000001 #define GOYA_PKT_LIN_DMA_CTL_RDCOMP_SHIFT 1 #define GOYA_PKT_LIN_DMA_CTL_RDCOMP_MASK 0x00000002 #define GOYA_PKT_LIN_DMA_CTL_WRCOMP_SHIFT 2 #define GOYA_PKT_LIN_DMA_CTL_WRCOMP_MASK 0x00000004 #define GOYA_PKT_LIN_DMA_CTL_MEMSET_SHIFT 6 #define GOYA_PKT_LIN_DMA_CTL_MEMSET_MASK 0x00000040 #define GOYA_PKT_LIN_DMA_CTL_DMA_DIR_SHIFT 20 #define GOYA_PKT_LIN_DMA_CTL_DMA_DIR_MASK 0x00700000 struct packet_lin_dma { __le32 tsize; __le32 ctl; __le64 src_addr; __le64 dst_addr; }; struct packet_cp_dma { __le32 tsize; __le32 ctl; __le64 src_addr; }; #endif /* GOYA_PACKETS_H */