Commit f13108fc authored by Tomasz Rusinowicz's avatar Tomasz Rusinowicz Committed by Stanislaw Gruszka
Browse files

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: default avatarTomasz Rusinowicz <tomasz.rusinowicz@intel.com>
Reviewed-by: default avatarJeffrey Hugo <quic_jhugo@quicinc.com>
Signed-off-by: default avatarStanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231028133415.1169975-4-stanislaw.gruszka@linux.intel.com
parent 9692b1dc

drivers/accel/ivpu/ivpu_debugfs.c

+28 −0
Original line number Diff line number Diff line
@@ -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,

drivers/accel/ivpu/ivpu_fw.c

+5 −0
Original line number Diff line number Diff line
@@ -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 */

drivers/accel/ivpu/ivpu_fw.h

+1 −0
Original line number Diff line number Diff line
@@ -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);