Commit d3027f4a authored by Dani Liberman's avatar Dani Liberman Committed by Oded Gabbay
Browse files

habanalabs/gaudi2: add page fault notify event 



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

Signed-off-by: default avatarDani Liberman <dliberman@habana.ai>
Reviewed-by: default avatarOded Gabbay <ogabbay@kernel.org>
Signed-off-by: default avatarOded Gabbay <ogabbay@kernel.org>
parent a63de89b

drivers/misc/habanalabs/gaudi2/gaudi2.c

+9 −8
Original line number Diff line number Diff line
@@ -8253,7 +8253,8 @@ static void gaudi2_handle_hif_fatal(struct hl_device *hdev, u16 event_type, u64 
	}

}



static void gaudi2_handle_page_error(struct hl_device *hdev, u64 mmu_base, bool is_pmmu)

static void gaudi2_handle_page_error(struct hl_device *hdev, u64 mmu_base, bool is_pmmu,

					u64 *event_mask)

{

	u32 valid, val;

	u64 addr;
@@ -8270,7 +8271,7 @@ static void gaudi2_handle_page_error(struct hl_device *hdev, u64 mmu_base, bool 


	dev_err_ratelimited(hdev->dev, "%s page fault on va 0x%llx\n",

				is_pmmu ? "PMMU" : "HMMU", addr);

	hl_capture_page_fault(hdev, addr, 0, is_pmmu);

	hl_handle_page_fault(hdev, addr, 0, is_pmmu, event_mask);



	WREG32(mmu_base + MMU_OFFSET(mmDCORE0_HMMU0_MMU_PAGE_ERROR_CAPTURE), 0);

}
@@ -8296,7 +8297,7 @@ static void gaudi2_handle_access_error(struct hl_device *hdev, u64 mmu_base, boo 
}



static void gaudi2_handle_mmu_spi_sei_generic(struct hl_device *hdev, const char *mmu_name,

						u64 mmu_base, bool is_pmmu)

						u64 mmu_base, bool is_pmmu, u64 *event_mask)

{

	u32 spi_sei_cause, interrupt_clr = 0x0;

	int i;
@@ -8309,7 +8310,7 @@ static void gaudi2_handle_mmu_spi_sei_generic(struct hl_device *hdev, const char 
						mmu_name, gaudi2_mmu_spi_sei[i].cause);



			if (i == 0)

				gaudi2_handle_page_error(hdev, mmu_base, is_pmmu);

				gaudi2_handle_page_error(hdev, mmu_base, is_pmmu, event_mask);

			else if (i == 1)

				gaudi2_handle_access_error(hdev, mmu_base, is_pmmu);
@@ -8381,7 +8382,7 @@ static bool gaudi2_handle_sm_err(struct hl_device *hdev, u8 sm_index) 
	return reset;

}



static void gaudi2_handle_mmu_spi_sei_err(struct hl_device *hdev, u16 event_type)

static void gaudi2_handle_mmu_spi_sei_err(struct hl_device *hdev, u16 event_type, u64 *event_mask)

{

	bool is_pmmu = false;

	char desc[32];
@@ -8439,7 +8440,7 @@ static void gaudi2_handle_mmu_spi_sei_err(struct hl_device *hdev, u16 event_type 
		return;

	}



	gaudi2_handle_mmu_spi_sei_generic(hdev, desc, mmu_base, is_pmmu);

	gaudi2_handle_mmu_spi_sei_generic(hdev, desc, mmu_base, is_pmmu, event_mask);

}
@@ -8969,7 +8970,7 @@ static void gaudi2_handle_eqe(struct hl_device *hdev, struct hl_eq_entry *eq_ent 
	case GAUDI2_EVENT_HMMU_0_AXI_ERR_RSP ... GAUDI2_EVENT_HMMU_12_AXI_ERR_RSP:

	case GAUDI2_EVENT_PMMU0_PAGE_FAULT_WR_PERM ... GAUDI2_EVENT_PMMU0_SECURITY_ERROR:

	case GAUDI2_EVENT_PMMU_AXI_ERR_RSP_0:

		gaudi2_handle_mmu_spi_sei_err(hdev, event_type);

		gaudi2_handle_mmu_spi_sei_err(hdev, event_type, &event_mask);

		reset_flags |= HL_DRV_RESET_FW_FATAL_ERR;

		event_mask |= HL_NOTIFIER_EVENT_USER_ENGINE_ERR;

		break;
@@ -10206,7 +10207,7 @@ static void gaudi2_ack_mmu_error(struct hl_device *hdev, u64 mmu_id) 
	if (gaudi2_get_mmu_base(hdev, mmu_id, &mmu_base))

		return;



	gaudi2_handle_page_error(hdev, mmu_base, is_pmmu);

	gaudi2_handle_page_error(hdev, mmu_base, is_pmmu, NULL);

	gaudi2_handle_access_error(hdev, mmu_base, is_pmmu);

}