84 lines
1.8 KiB
C
84 lines
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (c) 2018 MediaTek Inc.
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*
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*/
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#ifndef __MTK_CMDQ_MAILBOX_H__
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#define __MTK_CMDQ_MAILBOX_H__
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <linux/types.h>
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#define CMDQ_INST_SIZE 8 /* instruction is 64-bit */
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#define CMDQ_SUBSYS_SHIFT 16
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#define CMDQ_OP_CODE_SHIFT 24
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#define CMDQ_JUMP_PASS CMDQ_INST_SIZE
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#define CMDQ_WFE_UPDATE BIT(31)
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#define CMDQ_WFE_UPDATE_VALUE BIT(16)
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#define CMDQ_WFE_WAIT BIT(15)
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#define CMDQ_WFE_WAIT_VALUE 0x1
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/*
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* WFE arg_b
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* bit 0-11: wait value
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* bit 15: 1 - wait, 0 - no wait
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* bit 16-27: update value
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* bit 31: 1 - update, 0 - no update
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*/
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#define CMDQ_WFE_OPTION (CMDQ_WFE_WAIT | CMDQ_WFE_WAIT_VALUE)
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/** cmdq event maximum */
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#define CMDQ_MAX_EVENT 0x3ff
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/*
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* CMDQ_CODE_MASK:
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* set write mask
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* format: op mask
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* CMDQ_CODE_WRITE:
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* write value into target register
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* format: op subsys address value
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* CMDQ_CODE_JUMP:
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* jump by offset
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* format: op offset
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* CMDQ_CODE_WFE:
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* wait for event and clear
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* it is just clear if no wait
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* format: [wait] op event update:1 to_wait:1 wait:1
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* [clear] op event update:1 to_wait:0 wait:0
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* CMDQ_CODE_EOC:
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* end of command
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* format: op irq_flag
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*/
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enum cmdq_code {
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CMDQ_CODE_MASK = 0x02,
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CMDQ_CODE_WRITE = 0x04,
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CMDQ_CODE_POLL = 0x08,
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CMDQ_CODE_JUMP = 0x10,
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CMDQ_CODE_WFE = 0x20,
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CMDQ_CODE_EOC = 0x40,
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CMDQ_CODE_READ_S = 0x80,
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CMDQ_CODE_WRITE_S = 0x90,
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CMDQ_CODE_WRITE_S_MASK = 0x91,
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CMDQ_CODE_LOGIC = 0xa0,
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};
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struct cmdq_cb_data {
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int sta;
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struct cmdq_pkt *pkt;
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};
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struct cmdq_pkt {
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void *va_base;
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dma_addr_t pa_base;
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size_t cmd_buf_size; /* command occupied size */
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size_t buf_size; /* real buffer size */
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void *cl;
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};
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u8 cmdq_get_shift_pa(struct mbox_chan *chan);
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#endif /* __MTK_CMDQ_MAILBOX_H__ */
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