On 10/11/2024 5:12 PM, Lizhi Hou wrote:
When there is a hardware error, the NPU firmware notifies the host through
a mailbox message. The message includes details of the error, such as the
tile and column indexes where the error occurred.
The driver starts a thread to handle the NPU error message. The thread
stops the clients which are using the column where error occurred. Then
the driver resets that column.
Co-developed-by: Min Ma<min.ma@xxxxxxx>
Signed-off-by: Min Ma<min.ma@xxxxxxx>
Signed-off-by: Lizhi Hou<lizhi.hou@xxxxxxx>
---
drivers/accel/amdxdna/Makefile | 1 +
drivers/accel/amdxdna/aie2_error.c | 356 +++++++++++++++++++++++++++
drivers/accel/amdxdna/aie2_message.c | 19 ++
drivers/accel/amdxdna/aie2_pci.c | 32 +++
drivers/accel/amdxdna/aie2_pci.h | 9 +
5 files changed, 417 insertions(+)
create mode 100644 drivers/accel/amdxdna/aie2_error.c
diff --git a/drivers/accel/amdxdna/Makefile b/drivers/accel/amdxdna/Makefile
index a688c378761f..ed6f87910880 100644
--- a/drivers/accel/amdxdna/Makefile
+++ b/drivers/accel/amdxdna/Makefile
@@ -2,6 +2,7 @@
amdxdna-y := \
aie2_ctx.o \
+ aie2_error.o \
aie2_message.o \
aie2_pci.o \
aie2_psp.o \
diff --git a/drivers/accel/amdxdna/aie2_error.c b/drivers/accel/amdxdna/aie2_error.c
new file mode 100644
index 000000000000..d2787549f3b7
--- /dev/null
+++ b/drivers/accel/amdxdna/aie2_error.c
@@ -0,0 +1,356 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2023-2024, Advanced Micro Devices, Inc.
+ */
+
+#include <drm/drm_cache.h>
+#include <drm/drm_device.h>
+#include <drm/drm_print.h>
+#include <drm/gpu_scheduler.h>
+#include <linux/dma-mapping.h>
+#include <linux/kthread.h>
+#include <linux/kernel.h>
+
+#include "aie2_msg_priv.h"
+#include "aie2_pci.h"
+#include "amdxdna_mailbox.h"
+#include "amdxdna_pci_drv.h"
+
+struct async_event {
+ struct amdxdna_dev_hdl *ndev;
+ struct async_event_msg_resp resp;
+ struct workqueue_struct *wq;
+ struct work_struct work;
+ u8 *buf;
+ dma_addr_t addr;
+ u32 size;
+};
+
+struct async_events {
+ struct workqueue_struct *wq;
+ u8 *buf;
+ dma_addr_t addr;
+ u32 size;
+ u32 event_cnt;
+ struct async_event event[] __counted_by(event_cnt);
+};
+
+/*
+ * Below enum, struct and lookup tables are porting from XAIE util header file.
+ *
+ * Below data is defined by AIE device and it is used for decode error message
+ * from the device.
+ */
+
+enum aie_module_type {
+ AIE_MEM_MOD = 0,
+ AIE_CORE_MOD,
+ AIE_PL_MOD,
+};
+
+enum aie_error_category {
+ AIE_ERROR_SATURATION = 0,
+ AIE_ERROR_FP,
+ AIE_ERROR_STREAM,
+ AIE_ERROR_ACCESS,
+ AIE_ERROR_BUS,
+ AIE_ERROR_INSTRUCTION,
+ AIE_ERROR_ECC,
+ AIE_ERROR_LOCK,
+ AIE_ERROR_DMA,
+ AIE_ERROR_MEM_PARITY,
+ /* Unknown is not from XAIE, added for better category */
+ AIE_ERROR_UNKNOWN,
+};
+
+/* Don't pack, unless XAIE side changed */
+struct aie_error {
+ u8 row;
+ u8 col;
+ u32 mod_type;
+ u8 event_id;
+};
This looks like it is a structure to decode data from an external
device. Assuming that is so, the wrong types are used here. Should be
the "__" types like "__u8", no? Normal u8, etc are kernel internal only
types.
+
+struct aie_err_info {
+ u32 err_cnt;
+ u32 ret_code;
+ u32 rsvd;
+ struct aie_error payload[] __counted_by(err_cnt);
+};
+
+struct aie_event_category {
+ u8 event_id;
+ enum aie_error_category category;
+};
