1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-only */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Copyright (C) 2016 Broadcom 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Common header for Broadcom mailbox messages which is shared across 6*4882a593Smuzhiyun * Broadcom SoCs and Broadcom mailbox client drivers. 7*4882a593Smuzhiyun */ 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun #ifndef _LINUX_BRCM_MESSAGE_H_ 10*4882a593Smuzhiyun #define _LINUX_BRCM_MESSAGE_H_ 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun #include <linux/scatterlist.h> 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun enum brcm_message_type { 15*4882a593Smuzhiyun BRCM_MESSAGE_UNKNOWN = 0, 16*4882a593Smuzhiyun BRCM_MESSAGE_BATCH, 17*4882a593Smuzhiyun BRCM_MESSAGE_SPU, 18*4882a593Smuzhiyun BRCM_MESSAGE_SBA, 19*4882a593Smuzhiyun BRCM_MESSAGE_MAX, 20*4882a593Smuzhiyun }; 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun struct brcm_sba_command { 23*4882a593Smuzhiyun u64 cmd; 24*4882a593Smuzhiyun u64 *cmd_dma; 25*4882a593Smuzhiyun dma_addr_t cmd_dma_addr; 26*4882a593Smuzhiyun #define BRCM_SBA_CMD_TYPE_A BIT(0) 27*4882a593Smuzhiyun #define BRCM_SBA_CMD_TYPE_B BIT(1) 28*4882a593Smuzhiyun #define BRCM_SBA_CMD_TYPE_C BIT(2) 29*4882a593Smuzhiyun #define BRCM_SBA_CMD_HAS_RESP BIT(3) 30*4882a593Smuzhiyun #define BRCM_SBA_CMD_HAS_OUTPUT BIT(4) 31*4882a593Smuzhiyun u64 flags; 32*4882a593Smuzhiyun dma_addr_t resp; 33*4882a593Smuzhiyun size_t resp_len; 34*4882a593Smuzhiyun dma_addr_t data; 35*4882a593Smuzhiyun size_t data_len; 36*4882a593Smuzhiyun }; 37*4882a593Smuzhiyun 38*4882a593Smuzhiyun struct brcm_message { 39*4882a593Smuzhiyun enum brcm_message_type type; 40*4882a593Smuzhiyun union { 41*4882a593Smuzhiyun struct { 42*4882a593Smuzhiyun struct brcm_message *msgs; 43*4882a593Smuzhiyun unsigned int msgs_queued; 44*4882a593Smuzhiyun unsigned int msgs_count; 45*4882a593Smuzhiyun } batch; 46*4882a593Smuzhiyun struct { 47*4882a593Smuzhiyun struct scatterlist *src; 48*4882a593Smuzhiyun struct scatterlist *dst; 49*4882a593Smuzhiyun } spu; 50*4882a593Smuzhiyun struct { 51*4882a593Smuzhiyun struct brcm_sba_command *cmds; 52*4882a593Smuzhiyun unsigned int cmds_count; 53*4882a593Smuzhiyun } sba; 54*4882a593Smuzhiyun }; 55*4882a593Smuzhiyun void *ctx; 56*4882a593Smuzhiyun int error; 57*4882a593Smuzhiyun }; 58*4882a593Smuzhiyun 59*4882a593Smuzhiyun #endif /* _LINUX_BRCM_MESSAGE_H_ */ 60