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 MT8192_L2TCM_SRAM_PD_0          0x10C0
  36 #define MT8192_L2TCM_SRAM_PD_1          0x10C4
  37 #define MT8192_L2TCM_SRAM_PD_2          0x10C8
  38 #define MT8192_L1TCM_SRAM_PDN           0x102C
  39 #define MT8192_CPU0_SRAM_PD             0x1080
  40
  41 #define MT8192_SCP2APMCU_IPC_SET        0x4080
  42 #define MT8192_SCP2APMCU_IPC_CLR        0x4084
  43 #define MT8192_SCP_IPC_INT_BIT          BIT(0)
  44 #define MT8192_SCP2SPM_IPC_CLR          0x4094
  45 #define MT8192_GIPC_IN_SET              0x4098
  46 #define MT8192_HOST_IPC_INT_BIT         BIT(0)
  47
  48 #define MT8192_CORE0_SW_RSTN_CLR        0x10000
  49 #define MT8192_CORE0_SW_RSTN_SET        0x10004
  50 #define MT8192_CORE0_WDT_CFG            0x10034
  51
  52 #define SCP_FW_VER_LEN                  32
  53 #define SCP_SHARE_BUFFER_SIZE           288
  54
  55 struct scp_run {
  56         u32 signaled;
  57         s8 fw_ver[SCP_FW_VER_LEN];
  58         u32 dec_capability;
  59         u32 enc_capability;
  60         wait_queue_head_t wq;
  61 };
  62
  63 struct scp_ipi_desc {
  64         /* For protecting handler. */
  65         struct mutex lock;
  66         scp_ipi_handler_t handler;
  67         void *priv;
  68 };
  69
  70 struct mtk_scp;
  71
  72 struct mtk_scp_of_data {
  73         int (*scp_before_load)(struct mtk_scp *scp);
  74         void (*scp_irq_handler)(struct mtk_scp *scp);
  75         void (*scp_reset_assert)(struct mtk_scp *scp);
  76         void (*scp_reset_deassert)(struct mtk_scp *scp);
  77         void (*scp_stop)(struct mtk_scp *scp);
  78
  79         u32 host_to_scp_reg;
  80         u32 host_to_scp_int_bit;
  81
  82         size_t ipi_buf_offset;
  83 };
  84
  85 struct mtk_scp {
  86         struct device *dev;
  87         struct rproc *rproc;
  88         struct clk *clk;
  89         void __iomem *reg_base;
  90         void __iomem *sram_base;
  91         size_t sram_size;
  92
  93         const struct mtk_scp_of_data *data;
  94
  95         struct mtk_share_obj __iomem *recv_buf;
  96         struct mtk_share_obj __iomem *send_buf;
  97         struct scp_run run;
  98         /* To prevent multiple ipi_send run concurrently. */
  99         struct mutex send_lock;
 100         struct scp_ipi_desc ipi_desc[SCP_IPI_MAX];
 101         bool ipi_id_ack[SCP_IPI_MAX];
 102         wait_queue_head_t ack_wq;
 103
 104         void *cpu_addr;
 105         dma_addr_t dma_addr;
 106         size_t dram_size;
 107
 108         struct rproc_subdev *rpmsg_subdev;
 109 };
 110
 111 /**
 112  * struct mtk_share_obj - SRAM buffer shared with AP and SCP
 113  *
 114  * @id:         IPI id
 115  * @len:        share buffer length
 116  * @share_buf:  share buffer data
 117  */
 118 struct mtk_share_obj {
 119         u32 id;
 120         u32 len;
 121         u8 share_buf[SCP_SHARE_BUFFER_SIZE];
 122 };
 123
 124 void scp_memcpy_aligned(void __iomem *dst, const void *src, unsigned int len);
 125 void scp_ipi_lock(struct mtk_scp *scp, u32 id);
 126 void scp_ipi_unlock(struct mtk_scp *scp, u32 id);
 127
 128 #endif