[PATCH 04/10] accel/habanalabs: in hw_fini return error code if polling timed-out

[Oded Gabbay]

From: Dafna Hirschfeld <dhirschfeld at habana.ai>

In hw_fini callback, we use either the cpucp packet method or polling a
register. Currently we return error only in the case of cpucp packet
failure. In this patch we also return error if polling timed out.

Signed-off-by: Dafna Hirschfeld <dhirschfeld at habana.ai>
Reviewed-by: Oded Gabbay <ogabbay at kernel.org>
Signed-off-by: Oded Gabbay <ogabbay at kernel.org>
---
 drivers/accel/habanalabs/gaudi/gaudi.c   |  8 ++++----
 drivers/accel/habanalabs/gaudi2/gaudi2.c | 10 ++++++----
 drivers/accel/habanalabs/goya/goya.c     |  8 ++++----
 3 files changed, 14 insertions(+), 12 deletions(-)

diff --git a/drivers/accel/habanalabs/gaudi/gaudi.c b/drivers/accel/habanalabs/gaudi/gaudi.c
index 004846bc086e..a9d84675b407 100644
--- a/drivers/accel/habanalabs/gaudi/gaudi.c
+++ b/drivers/accel/habanalabs/gaudi/gaudi.c
@@ -4206,10 +4206,10 @@ static int gaudi_hw_fini(struct hl_device *hdev, bool hard_reset, bool fw_reset)
 	msleep(reset_timeout_ms);
 
 	status = RREG32(mmPSOC_GLOBAL_CONF_BTM_FSM);
-	if (status & PSOC_GLOBAL_CONF_BTM_FSM_STATE_MASK)
-		dev_err(hdev->dev,
-			"Timeout while waiting for device to reset 0x%x\n",
-			status);
+	if (status & PSOC_GLOBAL_CONF_BTM_FSM_STATE_MASK) {
+		dev_err(hdev->dev, "Timeout while waiting for device to reset 0x%x\n", status);
+		return -ETIMEDOUT;
+	}
 
 	if (gaudi) {
 		gaudi->hw_cap_initialized &= ~(HW_CAP_CPU | HW_CAP_CPU_Q | HW_CAP_HBM |
diff --git a/drivers/accel/habanalabs/gaudi2/gaudi2.c b/drivers/accel/habanalabs/gaudi2/gaudi2.c
index 652f12a058c7..15a06beea065 100644
--- a/drivers/accel/habanalabs/gaudi2/gaudi2.c
+++ b/drivers/accel/habanalabs/gaudi2/gaudi2.c
@@ -6036,7 +6036,7 @@ static void gaudi2_execute_hard_reset(struct hl_device *hdev, u32 reset_sleep_ms
 	WREG32(mmPSOC_RESET_CONF_SW_ALL_RST, 1);
 }
 
-static void gaudi2_get_soft_rst_done_indication(struct hl_device *hdev, u32 poll_timeout_us)
+static int gaudi2_get_soft_rst_done_indication(struct hl_device *hdev, u32 poll_timeout_us)
 {
 	int i, rc = 0;
 	u32 reg_val;
@@ -6053,6 +6053,7 @@ static void gaudi2_get_soft_rst_done_indication(struct hl_device *hdev, u32 poll
 	if (rc)
 		dev_err(hdev->dev, "Timeout while waiting for FW to complete soft reset (0x%x)\n",
 				reg_val);
+	return rc;
 }
 
 /**
@@ -6065,7 +6066,7 @@ static void gaudi2_get_soft_rst_done_indication(struct hl_device *hdev, u32 poll
  *
  * This function executes soft reset based on if driver/FW should do the reset
  */
-static void gaudi2_execute_soft_reset(struct hl_device *hdev, u32 reset_sleep_ms,
+static int gaudi2_execute_soft_reset(struct hl_device *hdev, u32 reset_sleep_ms,
 						bool driver_performs_reset, u32 poll_timeout_us)
 {
 	struct cpu_dyn_regs *dyn_regs = &hdev->fw_loader.dynamic_loader.comm_desc.cpu_dyn_regs;
@@ -6079,8 +6080,8 @@ static void gaudi2_execute_soft_reset(struct hl_device *hdev, u32 reset_sleep_ms
 
 		WREG32(le32_to_cpu(dyn_regs->gic_host_soft_rst_irq),
 			gaudi2_irq_map_table[GAUDI2_EVENT_CPU_SOFT_RESET].cpu_id);
-		gaudi2_get_soft_rst_done_indication(hdev, poll_timeout_us);
-		return;
+
+		return gaudi2_get_soft_rst_done_indication(hdev, poll_timeout_us);
 	}
 
 	/* Block access to engines, QMANs and SM during reset, these
@@ -6095,6 +6096,7 @@ static void gaudi2_execute_soft_reset(struct hl_device *hdev, u32 reset_sleep_ms
 				mmPCIE_VDEC1_MSTR_IF_RR_SHRD_HBW_BASE + HL_BLOCK_SIZE);
 
 	WREG32(mmPSOC_RESET_CONF_SOFT_RST, 1);
+	return 0;
 }
 
 static void gaudi2_poll_btm_indication(struct hl_device *hdev, u32 reset_sleep_ms,
diff --git a/drivers/accel/habanalabs/goya/goya.c b/drivers/accel/habanalabs/goya/goya.c
index e02de936b7b5..07d67878eac5 100644
--- a/drivers/accel/habanalabs/goya/goya.c
+++ b/drivers/accel/habanalabs/goya/goya.c
@@ -2834,10 +2834,10 @@ static int goya_hw_fini(struct hl_device *hdev, bool hard_reset, bool fw_reset)
 	msleep(reset_timeout_ms);
 
 	status = RREG32(mmPSOC_GLOBAL_CONF_BTM_FSM);
-	if (status & PSOC_GLOBAL_CONF_BTM_FSM_STATE_MASK)
-		dev_err(hdev->dev,
-			"Timeout while waiting for device to reset 0x%x\n",
-			status);
+	if (status & PSOC_GLOBAL_CONF_BTM_FSM_STATE_MASK) {
+		dev_err(hdev->dev, "Timeout while waiting for device to reset 0x%x\n", status);
+		return -ETIMEDOUT;
+	}
 
 	if (!hard_reset && goya) {
 		goya->hw_cap_initialized &= ~(HW_CAP_DMA | HW_CAP_MME |
-- 
2.40.0