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Subject[PATCH 5.17 173/343] habanalabs/gaudi: handle axi errors from NIC engines
Date
From: Oded Gabbay <ogabbay@kernel.org>

[ Upstream commit 26ef1c000bc21a192618c9ec651dd36ba63ca00c ]

Various AXI errors can occur in the NIC engines and are reported to
the driver by the f/w. Add code to print the errors and ack them to
the f/w.

Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/misc/habanalabs/gaudi/gaudi.c | 48 +++++++++++++++++++++++++++
1 file changed, 48 insertions(+)

diff --git a/drivers/misc/habanalabs/gaudi/gaudi.c b/drivers/misc/habanalabs/gaudi/gaudi.c
index 013c6da2e3ca..b4dacea80151 100644
--- a/drivers/misc/habanalabs/gaudi/gaudi.c
+++ b/drivers/misc/habanalabs/gaudi/gaudi.c
@@ -7819,6 +7819,48 @@ static void gaudi_print_fw_alive_info(struct hl_device *hdev,
fw_alive->thread_id, fw_alive->uptime_seconds);
}

+static void gaudi_print_nic_axi_irq_info(struct hl_device *hdev, u16 event_type,
+ void *data)
+{
+ char desc[64] = "", *type;
+ struct eq_nic_sei_event *eq_nic_sei = data;
+ u16 nic_id = event_type - GAUDI_EVENT_NIC_SEI_0;
+
+ switch (eq_nic_sei->axi_error_cause) {
+ case RXB:
+ type = "RXB";
+ break;
+ case RXE:
+ type = "RXE";
+ break;
+ case TXS:
+ type = "TXS";
+ break;
+ case TXE:
+ type = "TXE";
+ break;
+ case QPC_RESP:
+ type = "QPC_RESP";
+ break;
+ case NON_AXI_ERR:
+ type = "NON_AXI_ERR";
+ break;
+ case TMR:
+ type = "TMR";
+ break;
+ default:
+ dev_err(hdev->dev, "unknown NIC AXI cause %d\n",
+ eq_nic_sei->axi_error_cause);
+ type = "N/A";
+ break;
+ }
+
+ snprintf(desc, sizeof(desc), "NIC%d_%s%d", nic_id, type,
+ eq_nic_sei->id);
+ dev_err_ratelimited(hdev->dev, "Received H/W interrupt %d [\"%s\"]\n",
+ event_type, desc);
+}
+
static int gaudi_non_hard_reset_late_init(struct hl_device *hdev)
{
/* GAUDI doesn't support any reset except hard-reset */
@@ -8066,6 +8108,7 @@ static void gaudi_handle_eqe(struct hl_device *hdev,
struct hl_eq_entry *eq_entry)
{
struct gaudi_device *gaudi = hdev->asic_specific;
+ u64 data = le64_to_cpu(eq_entry->data[0]);
u32 ctl = le32_to_cpu(eq_entry->hdr.ctl);
u32 fw_fatal_err_flag = 0;
u16 event_type = ((ctl & EQ_CTL_EVENT_TYPE_MASK)
@@ -8263,6 +8306,11 @@ static void gaudi_handle_eqe(struct hl_device *hdev,
hl_fw_unmask_irq(hdev, event_type);
break;

+ case GAUDI_EVENT_NIC_SEI_0 ... GAUDI_EVENT_NIC_SEI_4:
+ gaudi_print_nic_axi_irq_info(hdev, event_type, &data);
+ hl_fw_unmask_irq(hdev, event_type);
+ break;
+
case GAUDI_EVENT_DMA_IF_SEI_0 ... GAUDI_EVENT_DMA_IF_SEI_3:
gaudi_print_irq_info(hdev, event_type, false);
gaudi_print_sm_sei_info(hdev, event_type,
--
2.35.1


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