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/* 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[0];
};
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[0]; /* 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 */
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