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habanalabs: expose undefined opcode status via info ioctl

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The info ioctl retrieves information on the last undefined opcode
occurred.

Signed-off-by: Tal Cohen <talcohen@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
This commit is contained in:
Tal Cohen 2022-05-12 11:59:41 +03:00 committed by Oded Gabbay
parent a7d6c35bcd
commit 6474691483
2 changed files with 55 additions and 0 deletions
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25
drivers/misc/habanalabs/common/habanalabs_ioctl.c
View file

@ -610,6 +610,28 @@ static int razwi_info(struct hl_fpriv *hpriv, struct hl_info_args *args)
return copy_to_user(out, &info, min_t(size_t, max_size, sizeof(info))) ? -EFAULT : 0;
}
static int undefined_opcode_info(struct hl_fpriv *hpriv, struct hl_info_args *args)
{
struct hl_device *hdev = hpriv->hdev;
u32 max_size = args->return_size;
struct hl_info_undefined_opcode_event info = {0};
void __user *out = (void __user *) (uintptr_t) args->return_pointer;
if ((!max_size) || (!out))
return -EINVAL;
info.timestamp = ktime_to_ns(hdev->last_error.undef_opcode.timestamp);
info.engine_id = hdev->last_error.undef_opcode.engine_id;
info.cq_addr = hdev->last_error.undef_opcode.cq_addr;
info.cq_size = hdev->last_error.undef_opcode.cq_size;
info.stream_id = hdev->last_error.undef_opcode.stream_id;
info.cb_addr_streams_len = hdev->last_error.undef_opcode.cb_addr_streams_len;
memcpy(info.cb_addr_streams, hdev->last_error.undef_opcode.cb_addr_streams,
sizeof(info.cb_addr_streams));
return copy_to_user(out, &info, min_t(size_t, max_size, sizeof(info))) ? -EFAULT : 0;
}
static int dev_mem_alloc_page_sizes_info(struct hl_fpriv *hpriv, struct hl_info_args *args)
{
void __user *out = (void __user *) (uintptr_t) args->return_pointer;
@ -718,6 +740,9 @@ static int _hl_info_ioctl(struct hl_fpriv *hpriv, void *data,
case HL_INFO_RAZWI_EVENT:
return razwi_info(hpriv, args);
case HL_INFO_UNDEFINED_OPCODE_EVENT:
return undefined_opcode_info(hpriv, args);
case HL_INFO_DEV_MEM_ALLOC_PAGE_SIZES:
return dev_mem_alloc_page_sizes_info(hpriv, args);

30
include/uapi/misc/habanalabs.h
View file

@ -352,6 +352,7 @@ enum hl_server_type {
* HL_INFO_REGISTER_EVENTFD - Register eventfd for event notifications.
* HL_INFO_UNREGISTER_EVENTFD - Unregister eventfd
* HL_INFO_GET_EVENTS - Retrieve the last occurred events
* HL_INFO_UNDEFINED_OPCODE_EVENT - Retrieve last undefined opcode error information.
*/
#define HL_INFO_HW_IP_INFO 0
#define HL_INFO_HW_EVENTS 1
@ -380,6 +381,7 @@ enum hl_server_type {
#define HL_INFO_REGISTER_EVENTFD 28
#define HL_INFO_UNREGISTER_EVENTFD 29
#define HL_INFO_GET_EVENTS 30
#define HL_INFO_UNDEFINED_OPCODE_EVENT 31
#define HL_INFO_VERSION_MAX_LEN 128
#define HL_INFO_CARD_NAME_MAX_LEN 16
@ -656,6 +658,34 @@ struct hl_info_razwi_event {
__u8 pad[2];
};
#define MAX_QMAN_STREAMS_INFO 4
#define OPCODE_INFO_MAX_ADDR_SIZE 8
/**
* struct hl_info_undefined_opcode_event - info about last undefined opcode error
* @timestamp: timestamp of the undefined opcode error
* @cb_addr_streams: CB addresses (per stream) that are currently exists in the PQ
* entiers. In case all streams array entries are
* filled with values, it means the execution was in Lower-CP.
* @cq_addr: the address of the current handled command buffer
* @cq_size: the size of the current handled command buffer
* @cb_addr_streams_len: num of streams - actual len of cb_addr_streams array.
* should be equal to 1 incase of undefined opcode
* in Upper-CP (specific stream) and equal to 4 incase
* of undefined opcode in Lower-CP.
* @engine_id: engine-id that the error occurred on
* @stream_id: the stream id the error occurred on. In case the stream equals to
* MAX_QMAN_STREAMS_INFO it means the error occurred on a Lower-CP.
*/
struct hl_info_undefined_opcode_event {
__s64 timestamp;
__u64 cb_addr_streams[MAX_QMAN_STREAMS_INFO][OPCODE_INFO_MAX_ADDR_SIZE];
__u64 cq_addr;
__u32 cq_size;
__u32 cb_addr_streams_len;
__u32 engine_id;
__u32 stream_id;
};
/**
* struct hl_info_dev_memalloc_page_sizes - valid page sizes in device mem alloc information.
* @page_order_bitmask: bitmap in which a set bit represents the order of the supported page size