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habanalabs/gaudi: add page fault notify event

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Each time page fault happens, besides capturing its data, also notify
the user about it.

Signed-off-by: Dani Liberman <dliberman@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
This commit is contained in:
Dani Liberman 2022-10-31 11:44:45 +02:00 committed by Oded Gabbay
parent cd21701cde
commit aff6354afd
4 changed files with 16 additions and 3 deletions
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9
drivers/misc/habanalabs/common/device.c
View File

@ -2490,3 +2490,12 @@ void hl_capture_page_fault(struct hl_device *hdev, u64 addr, u16 eng_id, bool is
hdev->captured_err_info.pgf_info.pgf.engine_id = eng_id;
hl_capture_user_mappings(hdev, is_pmmu);
}
void hl_handle_page_fault(struct hl_device *hdev, u64 addr, u16 eng_id, bool is_pmmu,
u64 *event_mask)
{
hl_capture_page_fault(hdev, addr, eng_id, is_pmmu);
if (event_mask)
*event_mask |= HL_NOTIFIER_EVENT_PAGE_FAULT;
}

2
drivers/misc/habanalabs/common/habanalabs.h
View File

@ -3815,6 +3815,8 @@ void hl_capture_razwi(struct hl_device *hdev, u64 addr, u16 *engine_id, u16 num_
void hl_handle_razwi(struct hl_device *hdev, u64 addr, u16 *engine_id, u16 num_of_engines,
u8 flags, u64 *event_mask);
void hl_capture_page_fault(struct hl_device *hdev, u64 addr, u16 eng_id, bool is_pmmu);
void hl_handle_page_fault(struct hl_device *hdev, u64 addr, u16 eng_id, bool is_pmmu,
u64 *event_mask);
#ifdef CONFIG_DEBUG_FS

6
drivers/misc/habanalabs/gaudi/gaudi.c
View File

@ -6740,7 +6740,7 @@ static void gaudi_print_and_get_razwi_info(struct hl_device *hdev, u16 *engine_i
}
}
static void gaudi_print_and_get_mmu_error_info(struct hl_device *hdev, u64 *addr)
static void gaudi_print_and_get_mmu_error_info(struct hl_device *hdev, u64 *addr, u64 *event_mask)
{
struct gaudi_device *gaudi = hdev->asic_specific;
u32 val;
@ -6755,7 +6755,7 @@ static void gaudi_print_and_get_mmu_error_info(struct hl_device *hdev, u64 *addr
*addr |= RREG32(mmMMU_UP_PAGE_ERROR_CAPTURE_VA);
dev_err_ratelimited(hdev->dev, "MMU page fault on va 0x%llx\n", *addr);
hl_capture_page_fault(hdev, *addr, 0, true);
hl_handle_page_fault(hdev, *addr, 0, true, event_mask);
WREG32(mmMMU_UP_PAGE_ERROR_CAPTURE, 0);
}
@ -7323,7 +7323,7 @@ static void gaudi_print_irq_info(struct hl_device *hdev, u16 event_type,
if (razwi) {
gaudi_print_and_get_razwi_info(hdev, &engine_id[0], &engine_id[1], &is_read,
&is_write);
gaudi_print_and_get_mmu_error_info(hdev, &razwi_addr);
gaudi_print_and_get_mmu_error_info(hdev, &razwi_addr, event_mask);
if (is_read)
razwi_flags |= HL_RAZWI_READ;

2
include/uapi/misc/habanalabs.h
View File

@ -722,6 +722,7 @@ enum hl_server_type {
* HL_NOTIFIER_EVENT_USER_ENGINE_ERR - Indicates device engine in error state
* HL_NOTIFIER_EVENT_GENERAL_HW_ERR - Indicates device HW error
* HL_NOTIFIER_EVENT_RAZWI - Indicates razwi happened
* HL_NOTIFIER_EVENT_PAGE_FAULT - Indicates page fault happened
*/
#define HL_NOTIFIER_EVENT_TPC_ASSERT (1ULL << 0)
#define HL_NOTIFIER_EVENT_UNDEFINED_OPCODE (1ULL << 1)
@ -731,6 +732,7 @@ enum hl_server_type {
#define HL_NOTIFIER_EVENT_USER_ENGINE_ERR (1ULL << 5)
#define HL_NOTIFIER_EVENT_GENERAL_HW_ERR (1ULL << 6)
#define HL_NOTIFIER_EVENT_RAZWI (1ULL << 7)
#define HL_NOTIFIER_EVENT_PAGE_FAULT (1ULL << 8)
/* Opcode for management ioctl
*