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c6eda63f33
Previously, SCP core 0 controlled the power of L2TCM and dictated that SCP core 1 could only boot after SCP core 0. To address this constraint, extracted the power control flow of L2TCM and made it shared between both cores, enabling support for arbitrary boot order. The flow for controlling L2TCM power has been incorporated into the mt8195_scp_before_load() and mt8195_scp_stop() APIs, which are respectively invoked during the rproc->ops->start() and rproc->ops->stop() operations. These APIs effectively serve the same purpose as the rproc prepare()/unprepare() APIs." Signed-off-by: Tinghan Shen <tinghan.shen@mediatek.com> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Tested-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Link: https://lore.kernel.org/r/20230901080935.14571-10-tinghan.shen@mediatek.com Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
160 lines
4.1 KiB
C
160 lines
4.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (c) 2019 MediaTek Inc.
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*/
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#ifndef __RPROC_MTK_COMMON_H
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#define __RPROC_MTK_COMMON_H
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#include <linux/interrupt.h>
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#include <linux/kernel.h>
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#include <linux/platform_device.h>
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#include <linux/remoteproc.h>
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#include <linux/remoteproc/mtk_scp.h>
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#define MT8183_SW_RSTN 0x0
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#define MT8183_SW_RSTN_BIT BIT(0)
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#define MT8183_SCP_TO_HOST 0x1C
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#define MT8183_SCP_IPC_INT_BIT BIT(0)
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#define MT8183_SCP_WDT_INT_BIT BIT(8)
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#define MT8183_HOST_TO_SCP 0x28
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#define MT8183_HOST_IPC_INT_BIT BIT(0)
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#define MT8183_WDT_CFG 0x84
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#define MT8183_SCP_CLK_SW_SEL 0x4000
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#define MT8183_SCP_CLK_DIV_SEL 0x4024
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#define MT8183_SCP_SRAM_PDN 0x402C
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#define MT8183_SCP_L1_SRAM_PD 0x4080
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#define MT8183_SCP_TCM_TAIL_SRAM_PD 0x4094
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#define MT8183_SCP_CACHE_SEL(x) (0x14000 + (x) * 0x3000)
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#define MT8183_SCP_CACHE_CON MT8183_SCP_CACHE_SEL(0)
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#define MT8183_SCP_DCACHE_CON MT8183_SCP_CACHE_SEL(1)
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#define MT8183_SCP_CACHESIZE_8KB BIT(8)
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#define MT8183_SCP_CACHE_CON_WAYEN BIT(10)
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#define MT8186_SCP_L1_SRAM_PD_P1 0x40B0
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#define MT8186_SCP_L1_SRAM_PD_p2 0x40B4
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#define MT8192_L2TCM_SRAM_PD_0 0x10C0
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#define MT8192_L2TCM_SRAM_PD_1 0x10C4
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#define MT8192_L2TCM_SRAM_PD_2 0x10C8
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#define MT8192_L1TCM_SRAM_PDN 0x102C
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#define MT8192_CPU0_SRAM_PD 0x1080
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#define MT8192_SCP2APMCU_IPC_SET 0x4080
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#define MT8192_SCP2APMCU_IPC_CLR 0x4084
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#define MT8192_SCP_IPC_INT_BIT BIT(0)
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#define MT8192_SCP2SPM_IPC_CLR 0x4094
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#define MT8192_GIPC_IN_SET 0x4098
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#define MT8192_HOST_IPC_INT_BIT BIT(0)
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#define MT8195_CORE1_HOST_IPC_INT_BIT BIT(4)
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#define MT8192_CORE0_SW_RSTN_CLR 0x10000
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#define MT8192_CORE0_SW_RSTN_SET 0x10004
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#define MT8192_CORE0_MEM_ATT_PREDEF 0x10008
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#define MT8192_CORE0_WDT_IRQ 0x10030
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#define MT8192_CORE0_WDT_CFG 0x10034
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#define MT8195_L1TCM_SRAM_PDN_RESERVED_RSI_BITS GENMASK(7, 4)
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#define MT8195_CPU1_SRAM_PD 0x1084
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#define MT8195_SSHUB2APMCU_IPC_SET 0x4088
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#define MT8195_SSHUB2APMCU_IPC_CLR 0x408C
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#define MT8195_CORE1_SW_RSTN_CLR 0x20000
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#define MT8195_CORE1_SW_RSTN_SET 0x20004
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#define MT8195_CORE1_MEM_ATT_PREDEF 0x20008
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#define MT8195_CORE1_WDT_CFG 0x20034
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#define SCP_FW_VER_LEN 32
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#define SCP_SHARE_BUFFER_SIZE 288
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struct scp_run {
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u32 signaled;
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s8 fw_ver[SCP_FW_VER_LEN];
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u32 dec_capability;
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u32 enc_capability;
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wait_queue_head_t wq;
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};
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struct scp_ipi_desc {
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/* For protecting handler. */
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struct mutex lock;
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scp_ipi_handler_t handler;
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void *priv;
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};
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struct mtk_scp;
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struct mtk_scp_of_data {
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int (*scp_clk_get)(struct mtk_scp *scp);
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int (*scp_before_load)(struct mtk_scp *scp);
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void (*scp_irq_handler)(struct mtk_scp *scp);
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void (*scp_reset_assert)(struct mtk_scp *scp);
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void (*scp_reset_deassert)(struct mtk_scp *scp);
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void (*scp_stop)(struct mtk_scp *scp);
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void *(*scp_da_to_va)(struct mtk_scp *scp, u64 da, size_t len);
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u32 host_to_scp_reg;
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u32 host_to_scp_int_bit;
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size_t ipi_buf_offset;
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};
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struct mtk_scp_of_cluster {
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void __iomem *reg_base;
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void __iomem *l1tcm_base;
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size_t l1tcm_size;
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phys_addr_t l1tcm_phys;
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struct list_head mtk_scp_list;
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/* Prevent concurrent operations of this structure and L2TCM power control. */
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struct mutex cluster_lock;
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u32 l2tcm_refcnt;
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};
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struct mtk_scp {
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struct device *dev;
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struct rproc *rproc;
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struct clk *clk;
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void __iomem *sram_base;
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size_t sram_size;
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phys_addr_t sram_phys;
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const struct mtk_scp_of_data *data;
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struct mtk_share_obj __iomem *recv_buf;
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struct mtk_share_obj __iomem *send_buf;
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struct scp_run run;
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/* To prevent multiple ipi_send run concurrently. */
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struct mutex send_lock;
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struct scp_ipi_desc ipi_desc[SCP_IPI_MAX];
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bool ipi_id_ack[SCP_IPI_MAX];
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wait_queue_head_t ack_wq;
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void *cpu_addr;
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dma_addr_t dma_addr;
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size_t dram_size;
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struct rproc_subdev *rpmsg_subdev;
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struct list_head elem;
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struct mtk_scp_of_cluster *cluster;
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};
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/**
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* struct mtk_share_obj - SRAM buffer shared with AP and SCP
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*
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* @id: IPI id
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* @len: share buffer length
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* @share_buf: share buffer data
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*/
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struct mtk_share_obj {
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u32 id;
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u32 len;
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u8 share_buf[SCP_SHARE_BUFFER_SIZE];
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};
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void scp_memcpy_aligned(void __iomem *dst, const void *src, unsigned int len);
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void scp_ipi_lock(struct mtk_scp *scp, u32 id);
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void scp_ipi_unlock(struct mtk_scp *scp, u32 id);
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#endif
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