From f13108fc7bae7085616805ed176b2114cdf4bd55 Mon Sep 17 00:00:00 2001 From: Tomasz Rusinowicz Date: Sat, 28 Oct 2023 15:34:07 +0200 Subject: [PATCH] accel/ivpu: Add dvfs_mode file to debugfs Add new debugfs file to set dvfs_mode FW boot parameter and restart the FW to allow experimenting with DVFS (dynamic voltage & frequency scaling). Signed-off-by: Tomasz Rusinowicz Reviewed-by: Jeffrey Hugo Signed-off-by: Stanislaw Gruszka Link: https://patchwork.freedesktop.org/patch/msgid/20231028133415.1169975-4-stanislaw.gruszka@linux.intel.com --- drivers/accel/ivpu/ivpu_debugfs.c | 28 ++++++++++++++++++++++++++++ drivers/accel/ivpu/ivpu_fw.c | 5 +++++ drivers/accel/ivpu/ivpu_fw.h | 1 + 3 files changed, 34 insertions(+) diff --git a/drivers/accel/ivpu/ivpu_debugfs.c b/drivers/accel/ivpu/ivpu_debugfs.c index ea453b985b49..6e0d56823024 100644 --- a/drivers/accel/ivpu/ivpu_debugfs.c +++ b/drivers/accel/ivpu/ivpu_debugfs.c @@ -115,6 +115,31 @@ static const struct drm_debugfs_info vdev_debugfs_list[] = { {"reset_pending", reset_pending_show, 0}, }; +static ssize_t +dvfs_mode_fops_write(struct file *file, const char __user *user_buf, size_t size, loff_t *pos) +{ + struct ivpu_device *vdev = file->private_data; + struct ivpu_fw_info *fw = vdev->fw; + u32 dvfs_mode; + int ret; + + ret = kstrtou32_from_user(user_buf, size, 0, &dvfs_mode); + if (ret < 0) + return ret; + + fw->dvfs_mode = dvfs_mode; + + ivpu_pm_schedule_recovery(vdev); + + return size; +} + +static const struct file_operations dvfs_mode_fops = { + .owner = THIS_MODULE, + .open = simple_open, + .write = dvfs_mode_fops_write, +}; + static int fw_log_show(struct seq_file *s, void *v) { struct ivpu_device *vdev = s->private; @@ -280,6 +305,9 @@ void ivpu_debugfs_init(struct ivpu_device *vdev) debugfs_create_file("force_recovery", 0200, debugfs_root, vdev, &ivpu_force_recovery_fops); + debugfs_create_file("dvfs_mode", 0200, debugfs_root, vdev, + &dvfs_mode_fops); + debugfs_create_file("fw_log", 0644, debugfs_root, vdev, &fw_log_fops); debugfs_create_file("fw_trace_destination_mask", 0200, debugfs_root, vdev, diff --git a/drivers/accel/ivpu/ivpu_fw.c b/drivers/accel/ivpu/ivpu_fw.c index 6142b09cf55a..b81827540db9 100644 --- a/drivers/accel/ivpu/ivpu_fw.c +++ b/drivers/accel/ivpu/ivpu_fw.c @@ -182,6 +182,8 @@ static int ivpu_fw_parse(struct ivpu_device *vdev) fw->trace_destination_mask = VPU_TRACE_DESTINATION_VERBOSE_TRACING; fw->trace_hw_component_mask = -1; + fw->dvfs_mode = 0; + ivpu_dbg(vdev, FW_BOOT, "Size: file %lu image %u runtime %u shavenn %u\n", fw->file->size, fw->image_size, fw->runtime_size, fw->shave_nn_size); ivpu_dbg(vdev, FW_BOOT, "Address: runtime 0x%llx, load 0x%llx, entry point 0x%llx\n", @@ -422,6 +424,8 @@ static void ivpu_fw_boot_params_print(struct ivpu_device *vdev, struct vpu_boot_ boot_params->punit_telemetry_sram_size); ivpu_dbg(vdev, FW_BOOT, "boot_params.vpu_telemetry_enable = 0x%x\n", boot_params->vpu_telemetry_enable); + ivpu_dbg(vdev, FW_BOOT, "boot_params.dvfs_mode = %u\n", + boot_params->dvfs_mode); } void ivpu_fw_boot_params_setup(struct ivpu_device *vdev, struct vpu_boot_params *boot_params) @@ -492,6 +496,7 @@ void ivpu_fw_boot_params_setup(struct ivpu_device *vdev, struct vpu_boot_params boot_params->punit_telemetry_sram_base = ivpu_hw_reg_telemetry_offset_get(vdev); boot_params->punit_telemetry_sram_size = ivpu_hw_reg_telemetry_size_get(vdev); boot_params->vpu_telemetry_enable = ivpu_hw_reg_telemetry_enable_get(vdev); + boot_params->dvfs_mode = vdev->fw->dvfs_mode; wmb(); /* Flush WC buffers after writing bootparams */ diff --git a/drivers/accel/ivpu/ivpu_fw.h b/drivers/accel/ivpu/ivpu_fw.h index 10ae2847f0ef..66b60fa161b5 100644 --- a/drivers/accel/ivpu/ivpu_fw.h +++ b/drivers/accel/ivpu/ivpu_fw.h @@ -27,6 +27,7 @@ struct ivpu_fw_info { u32 trace_level; u32 trace_destination_mask; u64 trace_hw_component_mask; + u32 dvfs_mode; }; int ivpu_fw_init(struct ivpu_device *vdev);