From: Tomasz Rusinowicz <tomasz.rusinow...@intel.com>
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 <tomasz.rusinow...@intel.com>
Reviewed-by: Jeffrey Hugo <quic_jh...@quicinc.com>
Signed-off-by: Stanislaw Gruszka <stanislaw.grus...@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);
--
2.25.1
