1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Copyright (c) 2019 MediaTek Inc. 4 */ 5 6 #ifndef __RPROC_MTK_COMMON_H 7 #define __RPROC_MTK_COMMON_H 8 9 #include <linux/interrupt.h> 10 #include <linux/kernel.h> 11 #include <linux/platform_device.h> 12 #include <linux/remoteproc.h> 13 #include <linux/remoteproc/mtk_scp.h> 14 15 #define MT8183_SW_RSTN 0x0 16 #define MT8183_SW_RSTN_BIT BIT(0) 17 #define MT8183_SCP_TO_HOST 0x1C 18 #define MT8183_SCP_IPC_INT_BIT BIT(0) 19 #define MT8183_SCP_WDT_INT_BIT BIT(8) 20 #define MT8183_HOST_TO_SCP 0x28 21 #define MT8183_HOST_IPC_INT_BIT BIT(0) 22 #define MT8183_WDT_CFG 0x84 23 #define MT8183_SCP_CLK_SW_SEL 0x4000 24 #define MT8183_SCP_CLK_DIV_SEL 0x4024 25 #define MT8183_SCP_SRAM_PDN 0x402C 26 #define MT8183_SCP_L1_SRAM_PD 0x4080 27 #define MT8183_SCP_TCM_TAIL_SRAM_PD 0x4094 28 29 #define MT8183_SCP_CACHE_SEL(x) (0x14000 + (x) * 0x3000) 30 #define MT8183_SCP_CACHE_CON MT8183_SCP_CACHE_SEL(0) 31 #define MT8183_SCP_DCACHE_CON MT8183_SCP_CACHE_SEL(1) 32 #define MT8183_SCP_CACHESIZE_8KB BIT(8) 33 #define MT8183_SCP_CACHE_CON_WAYEN BIT(10) 34 35 #define SCP_FW_VER_LEN 32 36 #define SCP_SHARE_BUFFER_SIZE 288 37 38 struct scp_run { 39 u32 signaled; 40 s8 fw_ver[SCP_FW_VER_LEN]; 41 u32 dec_capability; 42 u32 enc_capability; 43 wait_queue_head_t wq; 44 }; 45 46 struct scp_ipi_desc { 47 /* For protecting handler. */ 48 struct mutex lock; 49 scp_ipi_handler_t handler; 50 void *priv; 51 }; 52 53 struct mtk_scp { 54 struct device *dev; 55 struct rproc *rproc; 56 struct clk *clk; 57 void __iomem *reg_base; 58 void __iomem *sram_base; 59 size_t sram_size; 60 61 struct mtk_share_obj __iomem *recv_buf; 62 struct mtk_share_obj __iomem *send_buf; 63 struct scp_run run; 64 /* To prevent multiple ipi_send run concurrently. */ 65 struct mutex send_lock; 66 struct scp_ipi_desc ipi_desc[SCP_IPI_MAX]; 67 bool ipi_id_ack[SCP_IPI_MAX]; 68 wait_queue_head_t ack_wq; 69 70 void __iomem *cpu_addr; 71 dma_addr_t dma_addr; 72 size_t dram_size; 73 74 struct rproc_subdev *rpmsg_subdev; 75 }; 76 77 /** 78 * struct mtk_share_obj - SRAM buffer shared with AP and SCP 79 * 80 * @id: IPI id 81 * @len: share buffer length 82 * @share_buf: share buffer data 83 */ 84 struct mtk_share_obj { 85 u32 id; 86 u32 len; 87 u8 share_buf[SCP_SHARE_BUFFER_SIZE]; 88 }; 89 90 void scp_memcpy_aligned(void __iomem *dst, const void *src, unsigned int len); 91 void scp_ipi_lock(struct mtk_scp *scp, u32 id); 92 void scp_ipi_unlock(struct mtk_scp *scp, u32 id); 93 94 #endif 95