habanalabs: update security map after init CPU Qs

when reading CPU_BOOT_DEV_STS0 reg after FW reports SRAM AVAILABLE the
value in the register might not yet be updated by FW.
to overcome this issue another "up-to-date" read of this register is
done at the end of CPU queues init.

Signed-off-by: Ohad Sharabi <osharabi@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>

drivers/misc/habanalabs/common/firmware_if.c

@@ -125,7 +125,8 @@ int hl_fw_send_cpu_message(struct hl_device *hdev, u32 hw_queue_id, u32 *msg,
 		goto out;
 	}
 
-	if (hdev->asic_prop.fw_cpucp_ack_with_pi)
+	if (hdev->asic_prop.fw_app_security_map &
+			CPU_BOOT_DEV_STS0_PKT_PI_ACK_EN)
 		expected_ack_val = queue->pi;
 	else
 		expected_ack_val = CPUCP_PACKET_FENCE_VAL;
@@ -786,10 +787,6 @@ int hl_fw_init_cpu(struct hl_device *hdev, u32 cpu_boot_status_reg,
 				CPU_BOOT_DEV_STS0_FW_HARD_RST_EN)
 			prop->hard_reset_done_by_fw = true;
 
-		if (prop->fw_boot_cpu_security_map &
-				CPU_BOOT_DEV_STS0_PKT_PI_ACK_EN)
-			prop->fw_cpucp_ack_with_pi = true;
-
 		dev_dbg(hdev->dev,
 			"Firmware boot CPU security status %#x\n",
 			prop->fw_boot_cpu_security_map);

drivers/misc/habanalabs/common/habanalabs.h

@@ -420,8 +420,6 @@ struct hl_mmu_properties {
  *                            from BOOT_DEV_STS0
  * @dram_supports_virtual_memory: is there an MMU towards the DRAM
  * @hard_reset_done_by_fw: true if firmware is handling hard reset flow
- * @fw_cpucp_ack_with_pi: true if cpucp is acking messages with the PQ PI
- *                        instead of a magic number
  * @num_functional_hbms: number of functional HBMs in each DCORE.
  */
 struct asic_fixed_properties {
@@ -483,7 +481,6 @@ struct asic_fixed_properties {
 	u8				fw_security_status_valid;
 	u8				dram_supports_virtual_memory;
 	u8				hard_reset_done_by_fw;
-	u8				fw_cpucp_ack_with_pi;
 	u8				num_functional_hbms;
 };
 

drivers/misc/habanalabs/gaudi/gaudi.c

@@ -536,7 +536,6 @@ static int gaudi_get_fixed_properties(struct hl_device *hdev)
 	prop->fw_security_disabled = true;
 	prop->fw_security_status_valid = false;
 	prop->hard_reset_done_by_fw = false;
-	prop->fw_cpucp_ack_with_pi = false;
 
 	return 0;
 }
@@ -3727,6 +3726,7 @@ static int gaudi_init_cpu(struct hl_device *hdev)
 static int gaudi_init_cpu_queues(struct hl_device *hdev, u32 cpu_timeout)
 {
 	struct gaudi_device *gaudi = hdev->asic_specific;
+	struct asic_fixed_properties *prop = &hdev->asic_prop;
 	struct hl_eq *eq;
 	u32 status;
 	struct hl_hw_queue *cpu_pq =
@@ -3783,6 +3783,10 @@ static int gaudi_init_cpu_queues(struct hl_device *hdev, u32 cpu_timeout)
 		return -EIO;
 	}
 
+	/* update FW application security bits */
+	if (prop->fw_security_status_valid)
+		prop->fw_app_security_map = RREG32(mmCPU_BOOT_DEV_STS0);
+
 	gaudi->hw_cap_initialized |= HW_CAP_CPU_Q;
 	return 0;
 }

drivers/misc/habanalabs/goya/goya.c

@@ -464,7 +464,6 @@ int goya_get_fixed_properties(struct hl_device *hdev)
 	prop->fw_security_disabled = true;
 	prop->fw_security_status_valid = false;
 	prop->hard_reset_done_by_fw = false;
-	prop->fw_cpucp_ack_with_pi = false;
 
 	return 0;
 }
@@ -1189,6 +1188,7 @@ static int goya_stop_external_queues(struct hl_device *hdev)
 int goya_init_cpu_queues(struct hl_device *hdev)
 {
 	struct goya_device *goya = hdev->asic_specific;
+	struct asic_fixed_properties *prop = &hdev->asic_prop;
 	struct hl_eq *eq;
 	u32 status;
 	struct hl_hw_queue *cpu_pq = &hdev->kernel_queues[GOYA_QUEUE_ID_CPU_PQ];
@@ -1241,6 +1241,10 @@ int goya_init_cpu_queues(struct hl_device *hdev)
 		return -EIO;
 	}
 
+	/* update FW application security bits */
+	if (prop->fw_security_status_valid)
+		prop->fw_app_security_map = RREG32(mmCPU_BOOT_DEV_STS0);
+
 	goya->hw_cap_initialized |= HW_CAP_CPU_Q;
 	return 0;
 }