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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (c) 2019 MediaTek Inc.
*/
#ifndef __RPROC_MTK_COMMON_H
#define __RPROC_MTK_COMMON_H
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/remoteproc.h>
#include <linux/remoteproc/mtk_scp.h>
#define MT8183_SW_RSTN 0x0
#define MT8183_SW_RSTN_BIT BIT(0)
#define MT8183_SCP_TO_HOST 0x1C
#define MT8183_SCP_IPC_INT_BIT BIT(0)
#define MT8183_SCP_WDT_INT_BIT BIT(8)
#define MT8183_HOST_TO_SCP 0x28
#define MT8183_HOST_IPC_INT_BIT BIT(0)
#define MT8183_WDT_CFG 0x84
#define MT8183_SCP_CLK_SW_SEL 0x4000
#define MT8183_SCP_CLK_DIV_SEL 0x4024
#define MT8183_SCP_SRAM_PDN 0x402C
#define MT8183_SCP_L1_SRAM_PD 0x4080
#define MT8183_SCP_TCM_TAIL_SRAM_PD 0x4094
#define MT8183_SCP_CACHE_SEL(x) (0x14000 + (x) * 0x3000)
#define MT8183_SCP_CACHE_CON MT8183_SCP_CACHE_SEL(0)
#define MT8183_SCP_DCACHE_CON MT8183_SCP_CACHE_SEL(1)
#define MT8183_SCP_CACHESIZE_8KB BIT(8)
#define MT8183_SCP_CACHE_CON_WAYEN BIT(10)
#define MT8192_L2TCM_SRAM_PD_0 0x10C0
#define MT8192_L2TCM_SRAM_PD_1 0x10C4
#define MT8192_L2TCM_SRAM_PD_2 0x10C8
#define MT8192_L1TCM_SRAM_PDN 0x102C
#define MT8192_CPU0_SRAM_PD 0x1080
#define MT8192_SCP2APMCU_IPC_SET 0x4080
#define MT8192_SCP2APMCU_IPC_CLR 0x4084
#define MT8192_SCP_IPC_INT_BIT BIT(0)
#define MT8192_SCP2SPM_IPC_CLR 0x4094
#define MT8192_GIPC_IN_SET 0x4098
#define MT8192_HOST_IPC_INT_BIT BIT(0)
#define MT8192_CORE0_SW_RSTN_CLR 0x10000
#define MT8192_CORE0_SW_RSTN_SET 0x10004
#define MT8192_CORE0_WDT_CFG 0x10034
#define SCP_FW_VER_LEN 32
#define SCP_SHARE_BUFFER_SIZE 288
struct scp_run {
u32 signaled;
s8 fw_ver[SCP_FW_VER_LEN];
u32 dec_capability;
u32 enc_capability;
wait_queue_head_t wq;
};
struct scp_ipi_desc {
/* For protecting handler. */
struct mutex lock;
scp_ipi_handler_t handler;
void *priv;
};
struct mtk_scp;
struct mtk_scp_of_data {
int (*scp_before_load)(struct mtk_scp *scp);
void (*scp_irq_handler)(struct mtk_scp *scp);
void (*scp_reset_assert)(struct mtk_scp *scp);
void (*scp_reset_deassert)(struct mtk_scp *scp);
void (*scp_stop)(struct mtk_scp *scp);
u32 host_to_scp_reg;
u32 host_to_scp_int_bit;
size_t ipi_buf_offset;
};
struct mtk_scp {
struct device *dev;
struct rproc *rproc;
struct clk *clk;
void __iomem *reg_base;
void __iomem *sram_base;
size_t sram_size;
const struct mtk_scp_of_data *data;
struct mtk_share_obj __iomem *recv_buf;
struct mtk_share_obj __iomem *send_buf;
struct scp_run run;
/* To prevent multiple ipi_send run concurrently. */
struct mutex send_lock;
struct scp_ipi_desc ipi_desc[SCP_IPI_MAX];
bool ipi_id_ack[SCP_IPI_MAX];
wait_queue_head_t ack_wq;
void *cpu_addr;
dma_addr_t dma_addr;
size_t dram_size;
struct rproc_subdev *rpmsg_subdev;
};
/**
* struct mtk_share_obj - SRAM buffer shared with AP and SCP
*
* @id: IPI id
* @len: share buffer length
* @share_buf: share buffer data
*/
struct mtk_share_obj {
u32 id;
u32 len;
u8 share_buf[SCP_SHARE_BUFFER_SIZE];
};
void scp_memcpy_aligned(void __iomem *dst, const void *src, unsigned int len);
void scp_ipi_lock(struct mtk_scp *scp, u32 id);
void scp_ipi_unlock(struct mtk_scp *scp, u32 id);
#endif
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