From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vikash Garodia Subject: [PATCH v6 1/4] venus: firmware: add routine to reset ARM9 Date: Thu, 23 Aug 2018 19:58:45 +0530 Message-ID: <1535034528-11590-2-git-send-email-vgarodia@codeaurora.org> References: <1535034528-11590-1-git-send-email-vgarodia@codeaurora.org> Return-path: In-Reply-To: <1535034528-11590-1-git-send-email-vgarodia@codeaurora.org> Sender: linux-kernel-owner@vger.kernel.org To: stanimir.varbanov@linaro.org, hverkuil@xs4all.nl, mchehab@kernel.org, robh@kernel.org, mark.rutland@arm.com, andy.gross@linaro.org, arnd@arndb.de, bjorn.andersson@linaro.org Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-soc@vger.kernel.org, devicetree@vger.kernel.org, acourbot@chromium.org, vgarodia@codeaurora.org List-Id: linux-arm-msm@vger.kernel.org Add routine to reset the ARM9 and brings it out of reset. Also abstract the Venus CPU state handling with a new function. This is in preparation to add PIL functionality in venus driver. Signed-off-by: Vikash Garodia --- drivers/media/platform/qcom/venus/core.h | 2 ++ drivers/media/platform/qcom/venus/firmware.c | 33 ++++++++++++++++++++++++ drivers/media/platform/qcom/venus/firmware.h | 11 ++++++++ drivers/media/platform/qcom/venus/hfi_venus.c | 13 +++------- drivers/media/platform/qcom/venus/hfi_venus_io.h | 7 +++++ 5 files changed, 57 insertions(+), 9 deletions(-) diff --git a/drivers/media/platform/qcom/venus/core.h b/drivers/media/platform/qcom/venus/core.h index 2f02365..dfd5c10 100644 --- a/drivers/media/platform/qcom/venus/core.h +++ b/drivers/media/platform/qcom/venus/core.h @@ -98,6 +98,7 @@ struct venus_caps { * @dev: convenience struct device pointer * @dev_dec: convenience struct device pointer for decoder device * @dev_enc: convenience struct device pointer for encoder device + * @no_tz: a flag that suggests presence of trustzone * @lock: a lock for this strucure * @instances: a list_head of all instances * @insts_count: num of instances @@ -129,6 +130,7 @@ struct venus_core { struct device *dev; struct device *dev_dec; struct device *dev_enc; + bool no_tz; struct mutex lock; struct list_head instances; atomic_t insts_count; diff --git a/drivers/media/platform/qcom/venus/firmware.c b/drivers/media/platform/qcom/venus/firmware.c index c4a5778..a9d042e 100644 --- a/drivers/media/platform/qcom/venus/firmware.c +++ b/drivers/media/platform/qcom/venus/firmware.c @@ -22,10 +22,43 @@ #include #include +#include "core.h" #include "firmware.h" +#include "hfi_venus_io.h" #define VENUS_PAS_ID 9 #define VENUS_FW_MEM_SIZE (6 * SZ_1M) +#define VENUS_FW_START_ADDR 0x0 + +static void venus_reset_cpu(struct venus_core *core) +{ + void __iomem *base = core->base; + + writel(0, base + WRAPPER_FW_START_ADDR); + writel(VENUS_FW_MEM_SIZE, base + WRAPPER_FW_END_ADDR); + writel(0, base + WRAPPER_CPA_START_ADDR); + writel(VENUS_FW_MEM_SIZE, base + WRAPPER_CPA_END_ADDR); + writel(VENUS_FW_MEM_SIZE, base + WRAPPER_NP_START_ADDR); + writel(VENUS_FW_MEM_SIZE, base + WRAPPER_NP_END_ADDR); + writel(0x0, base + WRAPPER_CPU_CGC_DIS); + writel(0x0, base + WRAPPER_CPU_CLOCK_CONFIG); + + /* Bring ARM9 out of reset */ + writel(0, base + WRAPPER_A9SS_SW_RESET); +} + +int venus_set_hw_state(struct venus_core *core, bool resume) +{ + if (!core->no_tz) + return qcom_scm_set_remote_state(resume, 0); + + if (resume) + venus_reset_cpu(core); + else + writel(1, core->base + WRAPPER_A9SS_SW_RESET); + + return 0; +} int venus_boot(struct device *dev, const char *fwname) { diff --git a/drivers/media/platform/qcom/venus/firmware.h b/drivers/media/platform/qcom/venus/firmware.h index 428efb5..397570c 100644 --- a/drivers/media/platform/qcom/venus/firmware.h +++ b/drivers/media/platform/qcom/venus/firmware.h @@ -18,5 +18,16 @@ int venus_boot(struct device *dev, const char *fwname); int venus_shutdown(struct device *dev); +int venus_set_hw_state(struct venus_core *core, bool suspend); + +static inline int venus_set_hw_state_suspend(struct venus_core *core) +{ + return venus_set_hw_state(core, false); +} + +static inline int venus_set_hw_state_resume(struct venus_core *core) +{ + return venus_set_hw_state(core, true); +} #endif diff --git a/drivers/media/platform/qcom/venus/hfi_venus.c b/drivers/media/platform/qcom/venus/hfi_venus.c index 1240855..074837e 100644 --- a/drivers/media/platform/qcom/venus/hfi_venus.c +++ b/drivers/media/platform/qcom/venus/hfi_venus.c @@ -19,7 +19,6 @@ #include #include #include -#include #include #include "core.h" @@ -27,6 +26,7 @@ #include "hfi_msgs.h" #include "hfi_venus.h" #include "hfi_venus_io.h" +#include "firmware.h" #define HFI_MASK_QHDR_TX_TYPE 0xff000000 #define HFI_MASK_QHDR_RX_TYPE 0x00ff0000 @@ -55,11 +55,6 @@ #define IFACEQ_VAR_LARGE_PKT_SIZE 512 #define IFACEQ_VAR_HUGE_PKT_SIZE (1024 * 12) -enum tzbsp_video_state { - TZBSP_VIDEO_STATE_SUSPEND = 0, - TZBSP_VIDEO_STATE_RESUME -}; - struct hfi_queue_table_header { u32 version; u32 size; @@ -575,7 +570,7 @@ static int venus_power_off(struct venus_hfi_device *hdev) if (!hdev->power_enabled) return 0; - ret = qcom_scm_set_remote_state(TZBSP_VIDEO_STATE_SUSPEND, 0); + ret = venus_set_hw_state_suspend(hdev->core); if (ret) return ret; @@ -595,7 +590,7 @@ static int venus_power_on(struct venus_hfi_device *hdev) if (hdev->power_enabled) return 0; - ret = qcom_scm_set_remote_state(TZBSP_VIDEO_STATE_RESUME, 0); + ret = venus_set_hw_state_resume(hdev->core); if (ret) goto err; @@ -608,7 +603,7 @@ static int venus_power_on(struct venus_hfi_device *hdev) return 0; err_suspend: - qcom_scm_set_remote_state(TZBSP_VIDEO_STATE_SUSPEND, 0); + venus_set_hw_state_suspend(hdev->core); err: hdev->power_enabled = false; return ret; diff --git a/drivers/media/platform/qcom/venus/hfi_venus_io.h b/drivers/media/platform/qcom/venus/hfi_venus_io.h index def0926..483348d 100644 --- a/drivers/media/platform/qcom/venus/hfi_venus_io.h +++ b/drivers/media/platform/qcom/venus/hfi_venus_io.h @@ -112,6 +112,13 @@ #define WRAPPER_CPU_STATUS (WRAPPER_BASE + 0x2014) #define WRAPPER_CPU_STATUS_WFI BIT(0) #define WRAPPER_SW_RESET (WRAPPER_BASE + 0x3000) +#define WRAPPER_CPA_START_ADDR (WRAPPER_BASE + 0x1020) +#define WRAPPER_CPA_END_ADDR (WRAPPER_BASE + 0x1024) +#define WRAPPER_FW_START_ADDR (WRAPPER_BASE + 0x1028) +#define WRAPPER_FW_END_ADDR (WRAPPER_BASE + 0x102C) +#define WRAPPER_NP_START_ADDR (WRAPPER_BASE + 0x1030) +#define WRAPPER_NP_END_ADDR (WRAPPER_BASE + 0x1034) +#define WRAPPER_A9SS_SW_RESET (WRAPPER_BASE + 0x3000) /* Venus 4xx */ #define WRAPPER_VCODEC0_MMCC_POWER_STATUS (WRAPPER_BASE + 0x90) -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project