From d1943f1b97790f79474c1b55f37d24f714313bb9 Mon Sep 17 00:00:00 2001 From: Ofir Bitton Date: Wed, 15 Mar 2023 10:36:41 +0200 Subject: [PATCH] accel/habanalabs: fix HBM MMU interrupt handling Current mapping between HMMU event and HMMU block is wrong. In addition the captured address in case of a page fault or an access error is scrambled, Hence we must call the descramble function. Signed-off-by: Ofir Bitton Reviewed-by: Oded Gabbay Signed-off-by: Oded Gabbay --- drivers/accel/habanalabs/gaudi2/gaudi2.c | 145 +++++++++++++++++++++++-------- 1 file changed, 108 insertions(+), 37 deletions(-) diff --git a/drivers/accel/habanalabs/gaudi2/gaudi2.c b/drivers/accel/habanalabs/gaudi2/gaudi2.c index bace4ac..ad491fb 100644 --- a/drivers/accel/habanalabs/gaudi2/gaudi2.c +++ b/drivers/accel/habanalabs/gaudi2/gaudi2.c @@ -2112,6 +2112,7 @@ static bool gaudi2_get_mme_idle_status(struct hl_device *hdev, u64 *mask_arr, u8 static bool gaudi2_get_edma_idle_status(struct hl_device *hdev, u64 *mask_arr, u8 mask_len, struct engines_data *e); static u64 gaudi2_mmu_scramble_addr(struct hl_device *hdev, u64 raw_addr); +static u64 gaudi2_mmu_descramble_addr(struct hl_device *hdev, u64 scrambled_addr); static void gaudi2_init_scrambler_hbm(struct hl_device *hdev) { @@ -8844,7 +8845,7 @@ static int gaudi2_handle_hif_fatal(struct hl_device *hdev, u16 event_type, u64 i static void gaudi2_handle_page_error(struct hl_device *hdev, u64 mmu_base, bool is_pmmu, u64 *event_mask) { - u32 valid, val, axid_l, axid_h; + u32 valid, val; u64 addr; valid = RREG32(mmu_base + MMU_OFFSET(mmDCORE0_HMMU0_MMU_ACCESS_PAGE_ERROR_VALID)); @@ -8857,11 +8858,11 @@ static void gaudi2_handle_page_error(struct hl_device *hdev, u64 mmu_base, bool addr <<= 32; addr |= RREG32(mmu_base + MMU_OFFSET(mmDCORE0_HMMU0_MMU_PAGE_ERROR_CAPTURE_VA)); - axid_l = RREG32(mmu_base + MMU_OFFSET(mmDCORE0_HMMU0_MMU_PAGE_FAULT_ID_LSB)); - axid_h = RREG32(mmu_base + MMU_OFFSET(mmDCORE0_HMMU0_MMU_PAGE_FAULT_ID_MSB)); + if (!is_pmmu) + addr = gaudi2_mmu_descramble_addr(hdev, addr); - dev_err_ratelimited(hdev->dev, "%s page fault on va 0x%llx, transaction id 0x%llX\n", - is_pmmu ? "PMMU" : "HMMU", addr, ((u64)axid_h << 32) + axid_l); + dev_err_ratelimited(hdev->dev, "%s page fault on va 0x%llx\n", + is_pmmu ? "PMMU" : "HMMU", addr); hl_handle_page_fault(hdev, addr, 0, is_pmmu, event_mask); WREG32(mmu_base + MMU_OFFSET(mmDCORE0_HMMU0_MMU_ACCESS_PAGE_ERROR_VALID), 0); @@ -8882,6 +8883,9 @@ static void gaudi2_handle_access_error(struct hl_device *hdev, u64 mmu_base, boo addr <<= 32; addr |= RREG32(mmu_base + MMU_OFFSET(mmDCORE0_HMMU0_MMU_ACCESS_ERROR_CAPTURE_VA)); + if (!is_pmmu) + addr = gaudi2_mmu_descramble_addr(hdev, addr); + dev_err_ratelimited(hdev->dev, "%s access error on va 0x%llx\n", is_pmmu ? "PMMU" : "HMMU", addr); WREG32(mmu_base + MMU_OFFSET(mmDCORE0_HMMU0_MMU_ACCESS_PAGE_ERROR_VALID), 0); @@ -8976,46 +8980,110 @@ static int gaudi2_handle_sm_err(struct hl_device *hdev, u16 event_type, u8 sm_in return error_count; } +static u64 get_hmmu_base(u16 event_type) +{ + u8 dcore, index_in_dcore; + + switch (event_type) { + case GAUDI2_EVENT_HMMU_0_AXI_ERR_RSP: + case GAUDI2_EVENT_HMMU0_SPI_BASE ... GAUDI2_EVENT_HMMU0_SECURITY_ERROR: + dcore = 0; + index_in_dcore = 0; + break; + case GAUDI2_EVENT_HMMU_1_AXI_ERR_RSP: + case GAUDI2_EVENT_HMMU1_SPI_BASE ... GAUDI2_EVENT_HMMU1_SECURITY_ERROR: + dcore = 1; + index_in_dcore = 0; + break; + case GAUDI2_EVENT_HMMU_2_AXI_ERR_RSP: + case GAUDI2_EVENT_HMMU2_SPI_BASE ... GAUDI2_EVENT_HMMU2_SECURITY_ERROR: + dcore = 0; + index_in_dcore = 1; + break; + case GAUDI2_EVENT_HMMU_3_AXI_ERR_RSP: + case GAUDI2_EVENT_HMMU3_SPI_BASE ... GAUDI2_EVENT_HMMU3_SECURITY_ERROR: + dcore = 1; + index_in_dcore = 1; + break; + case GAUDI2_EVENT_HMMU_4_AXI_ERR_RSP: + case GAUDI2_EVENT_HMMU4_SPI_BASE ... GAUDI2_EVENT_HMMU4_SECURITY_ERROR: + dcore = 3; + index_in_dcore = 2; + break; + case GAUDI2_EVENT_HMMU_5_AXI_ERR_RSP: + case GAUDI2_EVENT_HMMU5_SPI_BASE ... GAUDI2_EVENT_HMMU5_SECURITY_ERROR: + dcore = 2; + index_in_dcore = 2; + break; + case GAUDI2_EVENT_HMMU_6_AXI_ERR_RSP: + case GAUDI2_EVENT_HMMU6_SPI_BASE ... GAUDI2_EVENT_HMMU6_SECURITY_ERROR: + dcore = 3; + index_in_dcore = 3; + break; + case GAUDI2_EVENT_HMMU_7_AXI_ERR_RSP: + case GAUDI2_EVENT_HMMU7_SPI_BASE ... GAUDI2_EVENT_HMMU7_SECURITY_ERROR: + dcore = 2; + index_in_dcore = 3; + break; + case GAUDI2_EVENT_HMMU_8_AXI_ERR_RSP: + case GAUDI2_EVENT_HMMU8_SPI_BASE ... GAUDI2_EVENT_HMMU8_SECURITY_ERROR: + dcore = 0; + index_in_dcore = 2; + break; + case GAUDI2_EVENT_HMMU_9_AXI_ERR_RSP: + case GAUDI2_EVENT_HMMU9_SPI_BASE ... GAUDI2_EVENT_HMMU9_SECURITY_ERROR: + dcore = 1; + index_in_dcore = 2; + break; + case GAUDI2_EVENT_HMMU_10_AXI_ERR_RSP: + case GAUDI2_EVENT_HMMU10_SPI_BASE ... GAUDI2_EVENT_HMMU10_SECURITY_ERROR: + dcore = 0; + index_in_dcore = 3; + break; + case GAUDI2_EVENT_HMMU_11_AXI_ERR_RSP: + case GAUDI2_EVENT_HMMU11_SPI_BASE ... GAUDI2_EVENT_HMMU11_SECURITY_ERROR: + dcore = 1; + index_in_dcore = 3; + break; + case GAUDI2_EVENT_HMMU_12_AXI_ERR_RSP: + case GAUDI2_EVENT_HMMU12_SPI_BASE ... GAUDI2_EVENT_HMMU12_SECURITY_ERROR: + dcore = 3; + index_in_dcore = 0; + break; + case GAUDI2_EVENT_HMMU_13_AXI_ERR_RSP: + case GAUDI2_EVENT_HMMU13_SPI_BASE ... GAUDI2_EVENT_HMMU13_SECURITY_ERROR: + dcore = 2; + index_in_dcore = 0; + break; + case GAUDI2_EVENT_HMMU_14_AXI_ERR_RSP: + case GAUDI2_EVENT_HMMU14_SPI_BASE ... GAUDI2_EVENT_HMMU14_SECURITY_ERROR: + dcore = 3; + index_in_dcore = 1; + break; + case GAUDI2_EVENT_HMMU_15_AXI_ERR_RSP: + case GAUDI2_EVENT_HMMU15_SPI_BASE ... GAUDI2_EVENT_HMMU15_SECURITY_ERROR: + dcore = 2; + index_in_dcore = 1; + break; + default: + return ULONG_MAX; + } + + return mmDCORE0_HMMU0_MMU_BASE + dcore * DCORE_OFFSET + index_in_dcore * DCORE_HMMU_OFFSET; +} + static int gaudi2_handle_mmu_spi_sei_err(struct hl_device *hdev, u16 event_type, u64 *event_mask) { bool is_pmmu = false; u32 error_count = 0; u64 mmu_base; - u8 index; switch (event_type) { - case GAUDI2_EVENT_HMMU0_PAGE_FAULT_OR_WR_PERM ... GAUDI2_EVENT_HMMU3_SECURITY_ERROR: - index = (event_type - GAUDI2_EVENT_HMMU0_PAGE_FAULT_OR_WR_PERM) / 3; - mmu_base = mmDCORE0_HMMU0_MMU_BASE + index * DCORE_HMMU_OFFSET; - break; - case GAUDI2_EVENT_HMMU_0_AXI_ERR_RSP ... GAUDI2_EVENT_HMMU_3_AXI_ERR_RSP: - index = (event_type - GAUDI2_EVENT_HMMU_0_AXI_ERR_RSP); - mmu_base = mmDCORE0_HMMU0_MMU_BASE + index * DCORE_HMMU_OFFSET; - break; - case GAUDI2_EVENT_HMMU8_PAGE_FAULT_WR_PERM ... GAUDI2_EVENT_HMMU11_SECURITY_ERROR: - index = (event_type - GAUDI2_EVENT_HMMU8_PAGE_FAULT_WR_PERM) / 3; - mmu_base = mmDCORE1_HMMU0_MMU_BASE + index * DCORE_HMMU_OFFSET; - break; - case GAUDI2_EVENT_HMMU_8_AXI_ERR_RSP ... GAUDI2_EVENT_HMMU_11_AXI_ERR_RSP: - index = (event_type - GAUDI2_EVENT_HMMU_8_AXI_ERR_RSP); - mmu_base = mmDCORE1_HMMU0_MMU_BASE + index * DCORE_HMMU_OFFSET; - break; - case GAUDI2_EVENT_HMMU7_PAGE_FAULT_WR_PERM ... GAUDI2_EVENT_HMMU4_SECURITY_ERROR: - index = (event_type - GAUDI2_EVENT_HMMU7_PAGE_FAULT_WR_PERM) / 3; - mmu_base = mmDCORE2_HMMU0_MMU_BASE + index * DCORE_HMMU_OFFSET; - break; - case GAUDI2_EVENT_HMMU_7_AXI_ERR_RSP ... GAUDI2_EVENT_HMMU_4_AXI_ERR_RSP: - index = (event_type - GAUDI2_EVENT_HMMU_7_AXI_ERR_RSP); - mmu_base = mmDCORE2_HMMU0_MMU_BASE + index * DCORE_HMMU_OFFSET; - break; - case GAUDI2_EVENT_HMMU15_PAGE_FAULT_WR_PERM ... GAUDI2_EVENT_HMMU12_SECURITY_ERROR: - index = (event_type - GAUDI2_EVENT_HMMU15_PAGE_FAULT_WR_PERM) / 3; - mmu_base = mmDCORE3_HMMU0_MMU_BASE + index * DCORE_HMMU_OFFSET; - break; - case GAUDI2_EVENT_HMMU_15_AXI_ERR_RSP ... GAUDI2_EVENT_HMMU_12_AXI_ERR_RSP: - index = (event_type - GAUDI2_EVENT_HMMU_15_AXI_ERR_RSP); - mmu_base = mmDCORE3_HMMU0_MMU_BASE + index * DCORE_HMMU_OFFSET; + case GAUDI2_EVENT_HMMU_0_AXI_ERR_RSP ... GAUDI2_EVENT_HMMU_12_AXI_ERR_RSP: + case GAUDI2_EVENT_HMMU0_SPI_BASE ... GAUDI2_EVENT_HMMU12_SECURITY_ERROR: + mmu_base = get_hmmu_base(event_type); break; + case GAUDI2_EVENT_PMMU0_PAGE_FAULT_WR_PERM ... GAUDI2_EVENT_PMMU0_SECURITY_ERROR: case GAUDI2_EVENT_PMMU_AXI_ERR_RSP_0: is_pmmu = true; @@ -9025,6 +9093,9 @@ static int gaudi2_handle_mmu_spi_sei_err(struct hl_device *hdev, u16 event_type, return 0; } + if (mmu_base == ULONG_MAX) + return 0; + error_count = gaudi2_handle_mmu_spi_sei_generic(hdev, event_type, mmu_base, is_pmmu, event_mask); hl_check_for_glbl_errors(hdev); -- 2.7.4