drivers/remoteproc/mtk_common.h

   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         phys_addr_t phys_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