linux-kernel - [PATCH 07/12] habanalabs: add power information type to POWER

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Date:   Sun, 28 Nov 2021 21:34:30 +0200
From:   Oded Gabbay <ogabbay@...nel.org>
To:     linux-kernel@...r.kernel.org
Cc:     Tomer Tayar <ttayar@...ana.ai>
Subject: [PATCH 07/12] habanalabs: add power information type to POWER_GET packet

From: Tomer Tayar <ttayar@...ana.ai>

In new f/w versions, it is required to explicitly indicate the power
information type when querying the F/W for power info.
When getting the current power level it should be set to power_input.

Signed-off-by: Tomer Tayar <ttayar@...ana.ai>
Reviewed-by: Oded Gabbay <ogabbay@...nel.org>
Signed-off-by: Oded Gabbay <ogabbay@...nel.org>
---
 drivers/misc/habanalabs/common/firmware_if.c | 1 +
 include/uapi/misc/habanalabs.h               | 1 +
 2 files changed, 2 insertions(+)

diff --git a/drivers/misc/habanalabs/common/firmware_if.c b/drivers/misc/habanalabs/common/firmware_if.c
index cf67800f2b47..bafadcc65497 100644
--- a/drivers/misc/habanalabs/common/firmware_if.c
+++ b/drivers/misc/habanalabs/common/firmware_if.c
@@ -969,6 +969,7 @@ int hl_fw_cpucp_power_get(struct hl_device *hdev, u64 *power)
 
 	pkt.ctl = cpu_to_le32(CPUCP_PACKET_POWER_GET <<
 				CPUCP_PKT_CTL_OPCODE_SHIFT);
+	pkt.type = CPUCP_POWER_INPUT;
 
 	rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
 			HL_CPUCP_INFO_TIMEOUT_USEC, &result);
diff --git a/include/uapi/misc/habanalabs.h b/include/uapi/misc/habanalabs.h
index eb8565fdae70..cd86937c572d 100644
--- a/include/uapi/misc/habanalabs.h
+++ b/include/uapi/misc/habanalabs.h
@@ -333,6 +333,7 @@ enum hl_server_type {
  * HL_INFO_SYNC_MANAGER  - Retrieve sync manager info per dcore
  * HL_INFO_TOTAL_ENERGY  - Retrieve total energy consumption
  * HL_INFO_PLL_FREQUENCY - Retrieve PLL frequency
+ * HL_INFO_POWER         - Retrieve power information
  * HL_INFO_OPEN_STATS    - Retrieve info regarding recent device open calls
  * HL_INFO_DRAM_REPLACED_ROWS - Retrieve DRAM replaced rows info
  * HL_INFO_DRAM_PENDING_ROWS - Retrieve DRAM pending rows num
-- 
2.25.1