linux-kernel - [PATCH 11/16] habanalabs/gaudi: fetch TPC/MME ECC errors from F/W

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20210818133922.63637-11-ogabbay@kernel.org>
Date:   Wed, 18 Aug 2021 16:39:17 +0300
From:   Oded Gabbay <ogabbay@...nel.org>
To:     linux-kernel@...r.kernel.org
Cc:     Ofir Bitton <obitton@...ana.ai>
Subject: [PATCH 11/16] habanalabs/gaudi: fetch TPC/MME ECC errors from F/W

From: Ofir Bitton <obitton@...ana.ai>

In case F/W security is enabled driver cannot access ECC registers,
hence driver must fetch the ECC info from F/W.

Signed-off-by: Ofir Bitton <obitton@...ana.ai>
Reviewed-by: Oded Gabbay <ogabbay@...nel.org>
Signed-off-by: Oded Gabbay <ogabbay@...nel.org>
---
 drivers/misc/habanalabs/gaudi/gaudi.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/misc/habanalabs/gaudi/gaudi.c b/drivers/misc/habanalabs/gaudi/gaudi.c
index 2f6d019c79e1..6671d1aca8e1 100644
--- a/drivers/misc/habanalabs/gaudi/gaudi.c
+++ b/drivers/misc/habanalabs/gaudi/gaudi.c
@@ -7458,6 +7458,11 @@ static void gaudi_handle_ecc_event(struct hl_device *hdev, u16 event_type,
 	bool extract_info_from_fw;
 	int rc;
 
+	if (hdev->asic_prop.fw_security_enabled) {
+		extract_info_from_fw = true;
+		goto extract_ecc_info;
+	}
+
 	switch (event_type) {
 	case GAUDI_EVENT_PCIE_CORE_SERR ... GAUDI_EVENT_PCIE_PHY_DERR:
 	case GAUDI_EVENT_DMA0_SERR_ECC ... GAUDI_EVENT_MMU_DERR:
@@ -7530,6 +7535,7 @@ static void gaudi_handle_ecc_event(struct hl_device *hdev, u16 event_type,
 		return;
 	}
 
+extract_ecc_info:
 	if (extract_info_from_fw) {
 		ecc_address = le64_to_cpu(ecc_data->ecc_address);
 		ecc_syndrom = le64_to_cpu(ecc_data->ecc_syndrom);
-- 
2.17.1