mirror of https://github.com/thesofproject/sof.git
145 lines
3.2 KiB
C
145 lines
3.2 KiB
C
/*
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright(c) 2019 Intel Corporation. All rights reserved.
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*
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* Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>
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*/
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#ifndef IO_BRIDGE_H
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#define IO_BRIDGE_H
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#include <stdint.h>
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#define QEMU_IO_DEBUG 0
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/* IO type */
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#define QEMU_IO_TYPE_QEMU 0
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#define QEMU_IO_TYPE_REG 1
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#define QEMU_IO_TYPE_IRQ 2
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#define QEMU_IO_TYPE_GDB 3
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#define QEMU_IO_TYPE_PM 4
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#define QEMU_IO_TYPE_DMA 5
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#define QEMU_IO_TYPE_MEM 6
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/* Global Message Reply */
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#define QEMU_IO_MSG_REPLY 0
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/* Register Messages */
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#define QEMU_IO_MSG_REG32W 32
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#define QEMU_IO_MSG_REG64W 33
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#define QEMU_IO_MSG_REG32R 34
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#define QEMU_IO_MSG_REG64R 35
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/* IRQ Messages */
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#define QEMU_IO_MSG_IRQ 64
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/* DMA Messages */
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#define QEMU_IO_DMA_REQ_NEW 96
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#define QEMU_IO_DMA_REQ_READY 97
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#define QEMU_IO_DMA_REQ_COMPLETE 98
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/* DMA Direction - relative to msg sender */
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#define QEMU_IO_DMA_DIR_READ 256
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#define QEMU_IO_DMA_DIR_WRITE 257
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/* GDB Messages */
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#define QEMU_IO_GDB_STALL 128
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#define QEMU_IO_GDB_CONT 129
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#define QEMU_IO_GDB_STALL_RPLY 130 /* stall after reply */
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/* PM Messages */
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#define QEMU_IO_PM_S0 192
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#define QEMU_IO_PM_S1 193
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#define QEMU_IO_PM_S2 194
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#define QEMU_IO_PM_S3 195
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#define QEMU_IO_PM_D0 196
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#define QEMU_IO_PM_D1 197
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#define QEMU_IO_PM_D2 198
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#define QEMU_IO_PM_D3 199
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/* Common message header */
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struct qemu_io_msg {
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uint16_t type;
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uint16_t msg;
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uint32_t size;
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uint32_t id;
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};
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/* Generic message reply */
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struct qemu_io_msg_reply {
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struct qemu_io_msg hdr;
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uint32_t reply;
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};
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/* Register messages */
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struct qemu_io_msg_reg32 {
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struct qemu_io_msg hdr;
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uint32_t reg;
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uint32_t val;
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};
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struct qemu_io_msg_reg64 {
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struct qemu_io_msg hdr;
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uint64_t reg;
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uint64_t val;
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};
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/* IRQ Messages */
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struct qemu_io_msg_irq {
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struct qemu_io_msg hdr;
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uint32_t irq;
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};
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/* PM Messages */
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struct qemu_io_msg_pm_state {
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struct qemu_io_msg hdr;
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};
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/* DMA Messages - same message used as reply */
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struct qemu_io_msg_dma32 {
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struct qemu_io_msg hdr;
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uint32_t direction; /* QEMU_IO_DMA_DIR_ */
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uint32_t reply; /* 0 or errno */
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uint32_t src;
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uint32_t dest;
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uint32_t size;
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uint32_t dmac_id;
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uint32_t chan_id;
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uint64_t host_data;
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uint64_t client_data;
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};
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struct qemu_io_msg_dma64 {
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struct qemu_io_msg hdr;
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uint32_t direction; /* QEMU_IO_DMA_DIR_ */
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uint32_t reply; /* 0 or errno */
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uint64_t src;
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uint64_t dest;
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uint64_t size;
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uint32_t dmac_id;
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uint32_t chan_id;
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uint64_t host_data;
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uint64_t client_data;
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};
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/* API calls for parent and child */
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int qemu_io_register_parent(const char *name,
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int (*cb)(void *, struct qemu_io_msg *msg),
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void *data);
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int qemu_io_register_child(const char *name,
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int (*cb)(void *, struct qemu_io_msg *msg),
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void *data);
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int qemu_io_send_msg(struct qemu_io_msg *msg);
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int qemu_io_send_msg_reply(struct qemu_io_msg *msg);
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int qemu_io_register_shm(const char *name, int region, size_t size,
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void **addr);
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int qemu_io_sync(int region, unsigned int offset, size_t length);
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void qemu_io_free(void);
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void qemu_io_free_shm(int region);
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#endif
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