[PATCH v2] accel/ivpu: Disallow setting sched mode OS starting from NPU6

[Karol Wachowski <karol.wachowski@linux.intel.com>]

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.wachowski@linux.intel.com>
---
Changes in v2:
 - Fix subject description typo mentiniong that HW mode is deprecated
   instead of OS mode
---
 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 c6fe7a408912..20618c552c77 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;
 
-- 
2.43.0