Re: [PATCH] accel/ivpu: Disallow setting sched mode HW starting from NPU6

[Jeff Hugo]

On 10/28/2025 1:07 AM, Karol Wachowski wrote:

$SUBJECT suggests that HW mode is disallowed, but the commit text says 
OS mode is disallowed. Feels like the subject has a typo, or is 
confusing. Everything else looks ok to me.

OS scheduling mode gets deprecated starting from NPU6 onward.
Print warning and fallback to HW scheduling mode if OS mode is
explicitly selected with sched_mode parameter.

Signed-off-by: Karol Wachowski <karol.wachow...@linux.intel.com>
---
  drivers/accel/ivpu/ivpu_drv.c | 2 +-
  drivers/accel/ivpu/ivpu_fw.c  | 6 ++++++
  2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/accel/ivpu/ivpu_drv.c b/drivers/accel/ivpu/ivpu_drv.c
index ca68730dee88..b305effcf003 100644
--- a/drivers/accel/ivpu/ivpu_drv.c
+++ b/drivers/accel/ivpu/ivpu_drv.c
@@ -57,7 +57,7 @@ MODULE_PARM_DESC(pll_max_ratio, "Maximum PLL ratio used to set NPU 
frequency");
  
  int ivpu_sched_mode = IVPU_SCHED_MODE_AUTO;
  module_param_named(sched_mode, ivpu_sched_mode, int, 0444);
-MODULE_PARM_DESC(sched_mode, "Scheduler mode: -1 - Use default scheduler, 0 - Use 
OS scheduler, 1 - Use HW scheduler");
+MODULE_PARM_DESC(sched_mode, "Scheduler mode: -1 - Use default scheduler, 0 - Use 
OS scheduler (supported on 27XX - 50XX), 1 - Use HW scheduler");
  
  bool ivpu_disable_mmu_cont_pages;
  module_param_named(disable_mmu_cont_pages, ivpu_disable_mmu_cont_pages, bool, 
0444);
diff --git a/drivers/accel/ivpu/ivpu_fw.c b/drivers/accel/ivpu/ivpu_fw.c
index aa032b39dbe3..48386d2cddbb 100644
--- a/drivers/accel/ivpu/ivpu_fw.c
+++ b/drivers/accel/ivpu/ivpu_fw.c
@@ -144,6 +144,12 @@ bool ivpu_is_within_range(u64 addr, size_t size, struct 
ivpu_addr_range *range)
  static u32
  ivpu_fw_sched_mode_select(struct ivpu_device *vdev, const struct 
vpu_firmware_header *fw_hdr)
  {
+       if (ivpu_hw_ip_gen(vdev) >= IVPU_HW_IP_60XX &&
+           ivpu_sched_mode == VPU_SCHEDULING_MODE_OS) {
+               ivpu_warn(vdev, "OS sched mode is not supported, using HW 
mode\n");
+               return VPU_SCHEDULING_MODE_HW;
+       }
+
        if (ivpu_sched_mode != IVPU_SCHED_MODE_AUTO)
                return ivpu_sched_mode;